Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * originally based on the dummy device. |
| 3 | * |
| 4 | * Copyright 1999, Thomas Davis, tadavis@lbl.gov. |
| 5 | * Licensed under the GPL. Based on dummy.c, and eql.c devices. |
| 6 | * |
| 7 | * bonding.c: an Ethernet Bonding driver |
| 8 | * |
| 9 | * This is useful to talk to a Cisco EtherChannel compatible equipment: |
| 10 | * Cisco 5500 |
| 11 | * Sun Trunking (Solaris) |
| 12 | * Alteon AceDirector Trunks |
| 13 | * Linux Bonding |
| 14 | * and probably many L2 switches ... |
| 15 | * |
| 16 | * How it works: |
| 17 | * ifconfig bond0 ipaddress netmask up |
| 18 | * will setup a network device, with an ip address. No mac address |
| 19 | * will be assigned at this time. The hw mac address will come from |
| 20 | * the first slave bonded to the channel. All slaves will then use |
| 21 | * this hw mac address. |
| 22 | * |
| 23 | * ifconfig bond0 down |
| 24 | * will release all slaves, marking them as down. |
| 25 | * |
| 26 | * ifenslave bond0 eth0 |
| 27 | * will attach eth0 to bond0 as a slave. eth0 hw mac address will either |
| 28 | * a: be used as initial mac address |
| 29 | * b: if a hw mac address already is there, eth0's hw mac address |
| 30 | * will then be set from bond0. |
| 31 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | */ |
| 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/kernel.h> |
| 35 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <linux/types.h> |
| 37 | #include <linux/fcntl.h> |
| 38 | #include <linux/interrupt.h> |
| 39 | #include <linux/ptrace.h> |
| 40 | #include <linux/ioport.h> |
| 41 | #include <linux/in.h> |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 42 | #include <net/ip.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <linux/ip.h> |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 44 | #include <linux/tcp.h> |
| 45 | #include <linux/udp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <linux/slab.h> |
| 47 | #include <linux/string.h> |
| 48 | #include <linux/init.h> |
| 49 | #include <linux/timer.h> |
| 50 | #include <linux/socket.h> |
| 51 | #include <linux/ctype.h> |
| 52 | #include <linux/inet.h> |
| 53 | #include <linux/bitops.h> |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 54 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #include <asm/dma.h> |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 56 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #include <linux/errno.h> |
| 58 | #include <linux/netdevice.h> |
| 59 | #include <linux/inetdevice.h> |
Jay Vosburgh | a816c7c | 2007-02-28 17:03:37 -0800 | [diff] [blame] | 60 | #include <linux/igmp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #include <linux/etherdevice.h> |
| 62 | #include <linux/skbuff.h> |
| 63 | #include <net/sock.h> |
| 64 | #include <linux/rtnetlink.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | #include <linux/smp.h> |
| 66 | #include <linux/if_ether.h> |
| 67 | #include <net/arp.h> |
| 68 | #include <linux/mii.h> |
| 69 | #include <linux/ethtool.h> |
| 70 | #include <linux/if_vlan.h> |
| 71 | #include <linux/if_bonding.h> |
David Sterba | b63bb73 | 2007-12-06 23:40:33 -0800 | [diff] [blame] | 72 | #include <linux/jiffies.h> |
Neil Horman | e843fa5 | 2010-10-13 16:01:50 +0000 | [diff] [blame] | 73 | #include <linux/preempt.h> |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 74 | #include <net/route.h> |
Eric W. Biederman | 457c4cb | 2007-09-12 12:01:34 +0200 | [diff] [blame] | 75 | #include <net/net_namespace.h> |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 76 | #include <net/netns/generic.h> |
Eric Dumazet | 5ee31c68 | 2012-06-12 06:03:51 +0000 | [diff] [blame] | 77 | #include <net/pkt_sched.h> |
nikolay@redhat.com | 278b208 | 2013-08-01 16:54:51 +0200 | [diff] [blame] | 78 | #include <linux/rculist.h> |
Jiri Pirko | 1bd758e | 2015-05-12 14:56:07 +0200 | [diff] [blame] | 79 | #include <net/flow_dissector.h> |
Roopa Prabhu | c158cba | 2015-01-29 22:40:16 -0800 | [diff] [blame] | 80 | #include <net/switchdev.h> |
David S. Miller | 1ef8019 | 2014-11-10 13:27:49 -0500 | [diff] [blame] | 81 | #include <net/bonding.h> |
| 82 | #include <net/bond_3ad.h> |
| 83 | #include <net/bond_alb.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
Matan Barak | 73b5a6f2 | 2015-04-26 15:55:57 +0300 | [diff] [blame] | 85 | #include "bonding_priv.h" |
| 86 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | /*---------------------------- Module parameters ----------------------------*/ |
| 88 | |
| 89 | /* monitor all links that often (in milliseconds). <=0 disables monitoring */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | |
| 91 | static int max_bonds = BOND_DEFAULT_MAX_BONDS; |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 92 | static int tx_queues = BOND_DEFAULT_TX_QUEUES; |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 93 | static int num_peer_notif = 1; |
Nikolay Aleksandrov | b98d9c6 | 2014-01-22 14:53:31 +0100 | [diff] [blame] | 94 | static int miimon; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 95 | static int updelay; |
| 96 | static int downdelay; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | static int use_carrier = 1; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 98 | static char *mode; |
| 99 | static char *primary; |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 100 | static char *primary_reselect; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 101 | static char *lacp_rate; |
stephen hemminger | 655f891 | 2011-06-22 09:54:39 +0000 | [diff] [blame] | 102 | static int min_links; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 103 | static char *ad_select; |
| 104 | static char *xmit_hash_policy; |
Nikolay Aleksandrov | 7bdb04e | 2014-01-22 14:53:23 +0100 | [diff] [blame] | 105 | static int arp_interval; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 106 | static char *arp_ip_target[BOND_MAX_ARP_TARGETS]; |
| 107 | static char *arp_validate; |
Veaceslav Falico | 8599b52 | 2013-06-24 11:49:34 +0200 | [diff] [blame] | 108 | static char *arp_all_targets; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 109 | static char *fail_over_mac; |
dingtianhong | b07ea07 | 2013-07-23 15:25:47 +0800 | [diff] [blame] | 110 | static int all_slaves_active; |
Stephen Hemminger | d2991f7 | 2009-06-12 19:02:44 +0000 | [diff] [blame] | 111 | static struct bond_params bonding_defaults; |
Flavio Leitner | c2952c3 | 2010-10-05 14:23:59 +0000 | [diff] [blame] | 112 | static int resend_igmp = BOND_DEFAULT_RESEND_IGMP; |
Nikolay Aleksandrov | 7395832 | 2013-11-05 13:51:41 +0100 | [diff] [blame] | 113 | static int packets_per_slave = 1; |
dingtianhong | 3a7129e | 2013-12-21 14:40:12 +0800 | [diff] [blame] | 114 | static int lp_interval = BOND_ALB_DEFAULT_LP_INTERVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | |
| 116 | module_param(max_bonds, int, 0); |
| 117 | MODULE_PARM_DESC(max_bonds, "Max number of bonded devices"); |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 118 | module_param(tx_queues, int, 0); |
| 119 | MODULE_PARM_DESC(tx_queues, "Max number of transmit queues (default = 16)"); |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 120 | module_param_named(num_grat_arp, num_peer_notif, int, 0644); |
Andy Gospodarek | 90e6247 | 2011-05-25 04:41:59 +0000 | [diff] [blame] | 121 | MODULE_PARM_DESC(num_grat_arp, "Number of peer notifications to send on " |
| 122 | "failover event (alias of num_unsol_na)"); |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 123 | module_param_named(num_unsol_na, num_peer_notif, int, 0644); |
Andy Gospodarek | 90e6247 | 2011-05-25 04:41:59 +0000 | [diff] [blame] | 124 | MODULE_PARM_DESC(num_unsol_na, "Number of peer notifications to send on " |
| 125 | "failover event (alias of num_grat_arp)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | module_param(miimon, int, 0); |
| 127 | MODULE_PARM_DESC(miimon, "Link check interval in milliseconds"); |
| 128 | module_param(updelay, int, 0); |
| 129 | MODULE_PARM_DESC(updelay, "Delay before considering link up, in milliseconds"); |
| 130 | module_param(downdelay, int, 0); |
Mitch Williams | 2ac4766 | 2005-11-09 10:35:03 -0800 | [diff] [blame] | 131 | MODULE_PARM_DESC(downdelay, "Delay before considering link down, " |
| 132 | "in milliseconds"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | module_param(use_carrier, int, 0); |
Mitch Williams | 2ac4766 | 2005-11-09 10:35:03 -0800 | [diff] [blame] | 134 | MODULE_PARM_DESC(use_carrier, "Use netif_carrier_ok (vs MII ioctls) in miimon; " |
| 135 | "0 for off, 1 for on (default)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | module_param(mode, charp, 0); |
Andy Gospodarek | 90e6247 | 2011-05-25 04:41:59 +0000 | [diff] [blame] | 137 | MODULE_PARM_DESC(mode, "Mode of operation; 0 for balance-rr, " |
Mitch Williams | 2ac4766 | 2005-11-09 10:35:03 -0800 | [diff] [blame] | 138 | "1 for active-backup, 2 for balance-xor, " |
| 139 | "3 for broadcast, 4 for 802.3ad, 5 for balance-tlb, " |
| 140 | "6 for balance-alb"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | module_param(primary, charp, 0); |
| 142 | MODULE_PARM_DESC(primary, "Primary network device to use"); |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 143 | module_param(primary_reselect, charp, 0); |
| 144 | MODULE_PARM_DESC(primary_reselect, "Reselect primary slave " |
| 145 | "once it comes up; " |
| 146 | "0 for always (default), " |
| 147 | "1 for only if speed of primary is " |
| 148 | "better, " |
| 149 | "2 for only on active slave " |
| 150 | "failure"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | module_param(lacp_rate, charp, 0); |
Andy Gospodarek | 90e6247 | 2011-05-25 04:41:59 +0000 | [diff] [blame] | 152 | MODULE_PARM_DESC(lacp_rate, "LACPDU tx rate to request from 802.3ad partner; " |
| 153 | "0 for slow, 1 for fast"); |
Jay Vosburgh | fd989c8 | 2008-11-04 17:51:16 -0800 | [diff] [blame] | 154 | module_param(ad_select, charp, 0); |
Zhu Yanjun | 0d039f3 | 2016-08-09 21:36:04 +0800 | [diff] [blame] | 155 | MODULE_PARM_DESC(ad_select, "802.3ad aggregation selection logic; " |
Andy Gospodarek | 90e6247 | 2011-05-25 04:41:59 +0000 | [diff] [blame] | 156 | "0 for stable (default), 1 for bandwidth, " |
| 157 | "2 for count"); |
stephen hemminger | 655f891 | 2011-06-22 09:54:39 +0000 | [diff] [blame] | 158 | module_param(min_links, int, 0); |
| 159 | MODULE_PARM_DESC(min_links, "Minimum number of available links before turning on carrier"); |
| 160 | |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 161 | module_param(xmit_hash_policy, charp, 0); |
Andy Gospodarek | 90e6247 | 2011-05-25 04:41:59 +0000 | [diff] [blame] | 162 | MODULE_PARM_DESC(xmit_hash_policy, "balance-xor and 802.3ad hashing method; " |
| 163 | "0 for layer 2 (default), 1 for layer 3+4, " |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 164 | "2 for layer 2+3, 3 for encap layer 2+3, " |
| 165 | "4 for encap layer 3+4"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | module_param(arp_interval, int, 0); |
| 167 | MODULE_PARM_DESC(arp_interval, "arp interval in milliseconds"); |
| 168 | module_param_array(arp_ip_target, charp, NULL, 0); |
| 169 | MODULE_PARM_DESC(arp_ip_target, "arp targets in n.n.n.n form"); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 170 | module_param(arp_validate, charp, 0); |
Andy Gospodarek | 90e6247 | 2011-05-25 04:41:59 +0000 | [diff] [blame] | 171 | MODULE_PARM_DESC(arp_validate, "validate src/dst of ARP probes; " |
| 172 | "0 for none (default), 1 for active, " |
| 173 | "2 for backup, 3 for all"); |
Veaceslav Falico | 8599b52 | 2013-06-24 11:49:34 +0200 | [diff] [blame] | 174 | module_param(arp_all_targets, charp, 0); |
| 175 | MODULE_PARM_DESC(arp_all_targets, "fail on any/all arp targets timeout; 0 for any (default), 1 for all"); |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 176 | module_param(fail_over_mac, charp, 0); |
Andy Gospodarek | 90e6247 | 2011-05-25 04:41:59 +0000 | [diff] [blame] | 177 | MODULE_PARM_DESC(fail_over_mac, "For active-backup, do not set all slaves to " |
| 178 | "the same MAC; 0 for none (default), " |
| 179 | "1 for active, 2 for follow"); |
Andy Gospodarek | ebd8e49 | 2010-06-02 08:39:21 +0000 | [diff] [blame] | 180 | module_param(all_slaves_active, int, 0); |
Masanari Iida | 37b7021 | 2014-09-09 18:07:55 +0900 | [diff] [blame] | 181 | MODULE_PARM_DESC(all_slaves_active, "Keep all frames received on an interface " |
Andy Gospodarek | 90e6247 | 2011-05-25 04:41:59 +0000 | [diff] [blame] | 182 | "by setting active flag for all slaves; " |
Andy Gospodarek | ebd8e49 | 2010-06-02 08:39:21 +0000 | [diff] [blame] | 183 | "0 for never (default), 1 for always."); |
Flavio Leitner | c2952c3 | 2010-10-05 14:23:59 +0000 | [diff] [blame] | 184 | module_param(resend_igmp, int, 0); |
Andy Gospodarek | 90e6247 | 2011-05-25 04:41:59 +0000 | [diff] [blame] | 185 | MODULE_PARM_DESC(resend_igmp, "Number of IGMP membership reports to send on " |
| 186 | "link failure"); |
Nikolay Aleksandrov | 7395832 | 2013-11-05 13:51:41 +0100 | [diff] [blame] | 187 | module_param(packets_per_slave, int, 0); |
| 188 | MODULE_PARM_DESC(packets_per_slave, "Packets to send per slave in balance-rr " |
| 189 | "mode; 0 for a random slave, 1 packet per " |
| 190 | "slave (default), >1 packets per slave."); |
dingtianhong | 3a7129e | 2013-12-21 14:40:12 +0800 | [diff] [blame] | 191 | module_param(lp_interval, uint, 0); |
| 192 | MODULE_PARM_DESC(lp_interval, "The number of seconds between instances where " |
| 193 | "the bonding driver sends learning packets to " |
| 194 | "each slaves peer switch. The default is 1."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | |
| 196 | /*----------------------------- Global variables ----------------------------*/ |
| 197 | |
Neil Horman | e843fa5 | 2010-10-13 16:01:50 +0000 | [diff] [blame] | 198 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Neil Horman | fb4fa76 | 2010-12-06 09:05:50 +0000 | [diff] [blame] | 199 | atomic_t netpoll_block_tx = ATOMIC_INIT(0); |
Neil Horman | e843fa5 | 2010-10-13 16:01:50 +0000 | [diff] [blame] | 200 | #endif |
| 201 | |
Eric Dumazet | f99189b | 2009-11-17 10:42:49 +0000 | [diff] [blame] | 202 | int bond_net_id __read_mostly; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 204 | static __be32 arp_target[BOND_MAX_ARP_TARGETS]; |
| 205 | static int arp_ip_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | static int bond_mode = BOND_MODE_ROUNDROBIN; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 207 | static int xmit_hashtype = BOND_XMIT_POLICY_LAYER2; |
| 208 | static int lacp_fast; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | /*-------------------------- Forward declarations ---------------------------*/ |
| 211 | |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 212 | static int bond_init(struct net_device *bond_dev); |
Eric W. Biederman | c67dfb2 | 2009-10-29 14:18:24 +0000 | [diff] [blame] | 213 | static void bond_uninit(struct net_device *bond_dev); |
Andy Gospodarek | 5f0c5f7 | 2014-09-28 22:34:37 -0400 | [diff] [blame] | 214 | static struct rtnl_link_stats64 *bond_get_stats(struct net_device *bond_dev, |
| 215 | struct rtnl_link_stats64 *stats); |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 216 | static void bond_slave_arr_handler(struct work_struct *work); |
Jay Vosburgh | 21a75f0 | 2016-02-02 13:35:56 -0800 | [diff] [blame] | 217 | static bool bond_time_in_interval(struct bonding *bond, unsigned long last_act, |
| 218 | int mod); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | |
| 220 | /*---------------------------- General routines -----------------------------*/ |
| 221 | |
Amerigo Wang | bd33acc | 2011-03-06 21:58:46 +0000 | [diff] [blame] | 222 | const char *bond_mode_name(int mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | { |
Holger Eitzenberger | 77afc92 | 2008-12-09 23:08:09 -0800 | [diff] [blame] | 224 | static const char *names[] = { |
| 225 | [BOND_MODE_ROUNDROBIN] = "load balancing (round-robin)", |
| 226 | [BOND_MODE_ACTIVEBACKUP] = "fault-tolerance (active-backup)", |
| 227 | [BOND_MODE_XOR] = "load balancing (xor)", |
| 228 | [BOND_MODE_BROADCAST] = "fault-tolerance (broadcast)", |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 229 | [BOND_MODE_8023AD] = "IEEE 802.3ad Dynamic link aggregation", |
Holger Eitzenberger | 77afc92 | 2008-12-09 23:08:09 -0800 | [diff] [blame] | 230 | [BOND_MODE_TLB] = "transmit load balancing", |
| 231 | [BOND_MODE_ALB] = "adaptive load balancing", |
| 232 | }; |
| 233 | |
Wang Sheng-Hui | f528094 | 2013-07-24 14:53:26 +0800 | [diff] [blame] | 234 | if (mode < BOND_MODE_ROUNDROBIN || mode > BOND_MODE_ALB) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | return "unknown"; |
Holger Eitzenberger | 77afc92 | 2008-12-09 23:08:09 -0800 | [diff] [blame] | 236 | |
| 237 | return names[mode]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | } |
| 239 | |
| 240 | /*---------------------------------- VLAN -----------------------------------*/ |
| 241 | |
| 242 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | * bond_dev_queue_xmit - Prepare skb for xmit. |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 244 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | * @bond: bond device that got this skb for tx. |
| 246 | * @skb: hw accel VLAN tagged skb to transmit |
| 247 | * @slave_dev: slave that is supposed to xmit this skbuff |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | */ |
dingtianhong | d316ded | 2014-01-02 09:13:09 +0800 | [diff] [blame] | 249 | void bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 250 | struct net_device *slave_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | { |
Ben Hutchings | 8387451 | 2010-12-13 08:19:28 +0000 | [diff] [blame] | 252 | skb->dev = slave_dev; |
Neil Horman | 374eeb5 | 2011-06-03 10:35:52 +0000 | [diff] [blame] | 253 | |
Eric Dumazet | 5ee31c68 | 2012-06-12 06:03:51 +0000 | [diff] [blame] | 254 | BUILD_BUG_ON(sizeof(skb->queue_mapping) != |
Jiri Pirko | df4ab5b | 2012-07-20 02:28:49 +0000 | [diff] [blame] | 255 | sizeof(qdisc_skb_cb(skb)->slave_dev_queue_mapping)); |
| 256 | skb->queue_mapping = qdisc_skb_cb(skb)->slave_dev_queue_mapping; |
Neil Horman | 374eeb5 | 2011-06-03 10:35:52 +0000 | [diff] [blame] | 257 | |
Amerigo Wang | e15c3c22 | 2012-08-10 01:24:45 +0000 | [diff] [blame] | 258 | if (unlikely(netpoll_tx_running(bond->dev))) |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 259 | bond_netpoll_send_skb(bond_get_slave_by_dev(bond, slave_dev), skb); |
Amerigo Wang | 080e413 | 2011-02-17 23:43:33 +0000 | [diff] [blame] | 260 | else |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 261 | dev_queue_xmit(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | } |
| 263 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 264 | /* In the following 2 functions, bond_vlan_rx_add_vid and bond_vlan_rx_kill_vid, |
Jiri Pirko | cc0e407 | 2011-07-20 04:54:46 +0000 | [diff] [blame] | 265 | * We don't protect the slave list iteration with a lock because: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | * a. This operation is performed in IOCTL context, |
| 267 | * b. The operation is protected by the RTNL semaphore in the 8021q code, |
| 268 | * c. Holding a lock with BH disabled while directly calling a base driver |
| 269 | * entry point is generally a BAD idea. |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 270 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | * The design of synchronization/protection for this operation in the 8021q |
| 272 | * module is good for one or more VLAN devices over a single physical device |
| 273 | * and cannot be extended for a teaming solution like bonding, so there is a |
| 274 | * potential race condition here where a net device from the vlan group might |
| 275 | * be referenced (either by a base driver or the 8021q code) while it is being |
| 276 | * removed from the system. However, it turns out we're not making matters |
| 277 | * worse, and if it works for regular VLAN usage it will work here too. |
| 278 | */ |
| 279 | |
| 280 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | * bond_vlan_rx_add_vid - Propagates adding an id to slaves |
| 282 | * @bond_dev: bonding net device that got called |
| 283 | * @vid: vlan id being added |
| 284 | */ |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 285 | static int bond_vlan_rx_add_vid(struct net_device *bond_dev, |
| 286 | __be16 proto, u16 vid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 288 | struct bonding *bond = netdev_priv(bond_dev); |
Veaceslav Falico | 81f23b1 | 2013-09-25 09:20:13 +0200 | [diff] [blame] | 289 | struct slave *slave, *rollback_slave; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 290 | struct list_head *iter; |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 291 | int res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 293 | bond_for_each_slave(bond, slave, iter) { |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 294 | res = vlan_vid_add(slave->dev, proto, vid); |
Jiri Pirko | 87002b0 | 2011-12-08 04:11:17 +0000 | [diff] [blame] | 295 | if (res) |
| 296 | goto unwind; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | } |
| 298 | |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 299 | return 0; |
Jiri Pirko | 87002b0 | 2011-12-08 04:11:17 +0000 | [diff] [blame] | 300 | |
| 301 | unwind: |
Veaceslav Falico | 81f23b1 | 2013-09-25 09:20:13 +0200 | [diff] [blame] | 302 | /* unwind to the slave that failed */ |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 303 | bond_for_each_slave(bond, rollback_slave, iter) { |
Veaceslav Falico | 81f23b1 | 2013-09-25 09:20:13 +0200 | [diff] [blame] | 304 | if (rollback_slave == slave) |
| 305 | break; |
| 306 | |
| 307 | vlan_vid_del(rollback_slave->dev, proto, vid); |
| 308 | } |
Jiri Pirko | 87002b0 | 2011-12-08 04:11:17 +0000 | [diff] [blame] | 309 | |
| 310 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | /** |
| 314 | * bond_vlan_rx_kill_vid - Propagates deleting an id to slaves |
| 315 | * @bond_dev: bonding net device that got called |
| 316 | * @vid: vlan id being removed |
| 317 | */ |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 318 | static int bond_vlan_rx_kill_vid(struct net_device *bond_dev, |
| 319 | __be16 proto, u16 vid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 321 | struct bonding *bond = netdev_priv(bond_dev); |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 322 | struct list_head *iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | struct slave *slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 325 | bond_for_each_slave(bond, slave, iter) |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 326 | vlan_vid_del(slave->dev, proto, vid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | |
Veaceslav Falico | e868b0c | 2013-08-28 23:25:15 +0200 | [diff] [blame] | 328 | if (bond_is_lb(bond)) |
| 329 | bond_alb_clear_vlan(bond, vid); |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 330 | |
| 331 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | } |
| 333 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | /*------------------------------- Link status -------------------------------*/ |
| 335 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 336 | /* Set the carrier state for the master according to the state of its |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 337 | * slaves. If any slaves are up, the master is up. In 802.3ad mode, |
| 338 | * do special 802.3ad magic. |
| 339 | * |
| 340 | * Returns zero if carrier state does not change, nonzero if it does. |
| 341 | */ |
Jonathan Toppins | 2477bc9 | 2015-01-26 01:16:57 -0500 | [diff] [blame] | 342 | int bond_set_carrier(struct bonding *bond) |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 343 | { |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 344 | struct list_head *iter; |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 345 | struct slave *slave; |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 346 | |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 347 | if (!bond_has_slaves(bond)) |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 348 | goto down; |
| 349 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 350 | if (BOND_MODE(bond) == BOND_MODE_8023AD) |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 351 | return bond_3ad_set_carrier(bond); |
| 352 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 353 | bond_for_each_slave(bond, slave, iter) { |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 354 | if (slave->link == BOND_LINK_UP) { |
| 355 | if (!netif_carrier_ok(bond->dev)) { |
| 356 | netif_carrier_on(bond->dev); |
| 357 | return 1; |
| 358 | } |
| 359 | return 0; |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | down: |
| 364 | if (netif_carrier_ok(bond->dev)) { |
| 365 | netif_carrier_off(bond->dev); |
| 366 | return 1; |
| 367 | } |
| 368 | return 0; |
| 369 | } |
| 370 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 371 | /* Get link speed and duplex from the slave's base driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | * using ethtool. If for some reason the call fails or the |
Weiping Pan | 98f41f6 | 2011-10-31 17:20:48 +0000 | [diff] [blame] | 373 | * values are invalid, set speed and duplex to -1, |
Rick Jones | 13b95fb | 2012-04-26 11:20:30 +0000 | [diff] [blame] | 374 | * and return. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | */ |
Rick Jones | 13b95fb | 2012-04-26 11:20:30 +0000 | [diff] [blame] | 376 | static void bond_update_speed_duplex(struct slave *slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | { |
| 378 | struct net_device *slave_dev = slave->dev; |
David Decotigny | 9856909 | 2016-02-24 10:58:02 -0800 | [diff] [blame] | 379 | struct ethtool_link_ksettings ecmd; |
Matthew Wilcox | 61a44b9 | 2007-07-31 14:00:02 -0700 | [diff] [blame] | 380 | int res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | |
Dan Carpenter | 589665f | 2011-11-04 08:21:38 +0000 | [diff] [blame] | 382 | slave->speed = SPEED_UNKNOWN; |
| 383 | slave->duplex = DUPLEX_UNKNOWN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
David Decotigny | 9856909 | 2016-02-24 10:58:02 -0800 | [diff] [blame] | 385 | res = __ethtool_get_link_ksettings(slave_dev, &ecmd); |
Matthew Wilcox | 61a44b9 | 2007-07-31 14:00:02 -0700 | [diff] [blame] | 386 | if (res < 0) |
Rick Jones | 13b95fb | 2012-04-26 11:20:30 +0000 | [diff] [blame] | 387 | return; |
Matthew Wilcox | 61a44b9 | 2007-07-31 14:00:02 -0700 | [diff] [blame] | 388 | |
David Decotigny | 9856909 | 2016-02-24 10:58:02 -0800 | [diff] [blame] | 389 | if (ecmd.base.speed == 0 || ecmd.base.speed == ((__u32)-1)) |
Rick Jones | 13b95fb | 2012-04-26 11:20:30 +0000 | [diff] [blame] | 390 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | |
David Decotigny | 9856909 | 2016-02-24 10:58:02 -0800 | [diff] [blame] | 392 | switch (ecmd.base.duplex) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | case DUPLEX_FULL: |
| 394 | case DUPLEX_HALF: |
| 395 | break; |
| 396 | default: |
Rick Jones | 13b95fb | 2012-04-26 11:20:30 +0000 | [diff] [blame] | 397 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | } |
| 399 | |
David Decotigny | 9856909 | 2016-02-24 10:58:02 -0800 | [diff] [blame] | 400 | slave->speed = ecmd.base.speed; |
| 401 | slave->duplex = ecmd.base.duplex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | |
Rick Jones | 13b95fb | 2012-04-26 11:20:30 +0000 | [diff] [blame] | 403 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | } |
| 405 | |
sfeldma@cumulusnetworks.com | 07699f9 | 2014-01-16 22:57:49 -0800 | [diff] [blame] | 406 | const char *bond_slave_link_status(s8 link) |
| 407 | { |
| 408 | switch (link) { |
| 409 | case BOND_LINK_UP: |
| 410 | return "up"; |
| 411 | case BOND_LINK_FAIL: |
| 412 | return "going down"; |
| 413 | case BOND_LINK_DOWN: |
| 414 | return "down"; |
| 415 | case BOND_LINK_BACK: |
| 416 | return "going back"; |
| 417 | default: |
| 418 | return "unknown"; |
| 419 | } |
| 420 | } |
| 421 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 422 | /* if <dev> supports MII link status reporting, check its link status. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | * |
| 424 | * We either do MII/ETHTOOL ioctls, or check netif_carrier_ok(), |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 425 | * depending upon the setting of the use_carrier parameter. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | * |
| 427 | * Return either BMSR_LSTATUS, meaning that the link is up (or we |
| 428 | * can't tell and just pretend it is), or 0, meaning that the link is |
| 429 | * down. |
| 430 | * |
| 431 | * If reporting is non-zero, instead of faking link up, return -1 if |
| 432 | * both ETHTOOL and MII ioctls fail (meaning the device does not |
| 433 | * support them). If use_carrier is set, return whatever it says. |
| 434 | * It'd be nice if there was a good way to tell if a driver supports |
| 435 | * netif_carrier, but there really isn't. |
| 436 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 437 | static int bond_check_dev_link(struct bonding *bond, |
| 438 | struct net_device *slave_dev, int reporting) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | { |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 440 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
Jiri Bohac | d9d5283 | 2009-10-28 22:23:54 -0700 | [diff] [blame] | 441 | int (*ioctl)(struct net_device *, struct ifreq *, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | struct ifreq ifr; |
| 443 | struct mii_ioctl_data *mii; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | |
Petri Gynther | 6c98885 | 2009-08-28 12:05:15 +0000 | [diff] [blame] | 445 | if (!reporting && !netif_running(slave_dev)) |
| 446 | return 0; |
| 447 | |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 448 | if (bond->params.use_carrier) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | return netif_carrier_ok(slave_dev) ? BMSR_LSTATUS : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | |
Jiri Pirko | 29112f4 | 2009-04-24 01:58:23 +0000 | [diff] [blame] | 451 | /* Try to get link status using Ethtool first. */ |
Ben Hutchings | c772dde | 2012-12-07 06:15:32 +0000 | [diff] [blame] | 452 | if (slave_dev->ethtool_ops->get_link) |
| 453 | return slave_dev->ethtool_ops->get_link(slave_dev) ? |
| 454 | BMSR_LSTATUS : 0; |
Jiri Pirko | 29112f4 | 2009-04-24 01:58:23 +0000 | [diff] [blame] | 455 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 456 | /* Ethtool can't be used, fallback to MII ioctls. */ |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 457 | ioctl = slave_ops->ndo_do_ioctl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | if (ioctl) { |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 459 | /* TODO: set pointer to correct ioctl on a per team member |
| 460 | * bases to make this more efficient. that is, once |
| 461 | * we determine the correct ioctl, we will always |
| 462 | * call it and not the others for that team |
| 463 | * member. |
| 464 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 466 | /* We cannot assume that SIOCGMIIPHY will also read a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | * register; not all network drivers (e.g., e100) |
| 468 | * support that. |
| 469 | */ |
| 470 | |
| 471 | /* Yes, the mii is overlaid on the ifreq.ifr_ifru */ |
| 472 | strncpy(ifr.ifr_name, slave_dev->name, IFNAMSIZ); |
| 473 | mii = if_mii(&ifr); |
Al Viro | 4ad41c1 | 2016-09-03 19:37:25 -0400 | [diff] [blame] | 474 | if (ioctl(slave_dev, &ifr, SIOCGMIIPHY) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | mii->reg_num = MII_BMSR; |
Al Viro | 4ad41c1 | 2016-09-03 19:37:25 -0400 | [diff] [blame] | 476 | if (ioctl(slave_dev, &ifr, SIOCGMIIREG) == 0) |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 477 | return mii->val_out & BMSR_LSTATUS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | } |
| 479 | } |
| 480 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 481 | /* If reporting, report that either there's no dev->do_ioctl, |
Matthew Wilcox | 61a44b9 | 2007-07-31 14:00:02 -0700 | [diff] [blame] | 482 | * or both SIOCGMIIREG and get_link failed (meaning that we |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | * cannot report link status). If not reporting, pretend |
| 484 | * we're ok. |
| 485 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 486 | return reporting ? -1 : BMSR_LSTATUS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | } |
| 488 | |
| 489 | /*----------------------------- Multicast list ------------------------------*/ |
| 490 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 491 | /* Push the promiscuity flag down to appropriate slaves */ |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 492 | static int bond_set_promiscuity(struct bonding *bond, int inc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | { |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 494 | struct list_head *iter; |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 495 | int err = 0; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 496 | |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 497 | if (bond_uses_primary(bond)) { |
Veaceslav Falico | 14056e7 | 2014-07-16 18:32:01 +0200 | [diff] [blame] | 498 | struct slave *curr_active = rtnl_dereference(bond->curr_active_slave); |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 499 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 500 | if (curr_active) |
| 501 | err = dev_set_promiscuity(curr_active->dev, inc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | } else { |
| 503 | struct slave *slave; |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 504 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 505 | bond_for_each_slave(bond, slave, iter) { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 506 | err = dev_set_promiscuity(slave->dev, inc); |
| 507 | if (err) |
| 508 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | } |
| 510 | } |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 511 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | } |
| 513 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 514 | /* Push the allmulti flag down to all slaves */ |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 515 | static int bond_set_allmulti(struct bonding *bond, int inc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | { |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 517 | struct list_head *iter; |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 518 | int err = 0; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 519 | |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 520 | if (bond_uses_primary(bond)) { |
Veaceslav Falico | 14056e7 | 2014-07-16 18:32:01 +0200 | [diff] [blame] | 521 | struct slave *curr_active = rtnl_dereference(bond->curr_active_slave); |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 522 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 523 | if (curr_active) |
| 524 | err = dev_set_allmulti(curr_active->dev, inc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | } else { |
| 526 | struct slave *slave; |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 527 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 528 | bond_for_each_slave(bond, slave, iter) { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 529 | err = dev_set_allmulti(slave->dev, inc); |
| 530 | if (err) |
| 531 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | } |
| 533 | } |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 534 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | } |
| 536 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 537 | /* Retrieve the list of registered multicast addresses for the bonding |
Jay Vosburgh | a816c7c | 2007-02-28 17:03:37 -0800 | [diff] [blame] | 538 | * device and retransmit an IGMP JOIN request to the current active |
| 539 | * slave. |
| 540 | */ |
stephen hemminger | 379b738 | 2010-10-15 11:02:56 +0000 | [diff] [blame] | 541 | static void bond_resend_igmp_join_requests_delayed(struct work_struct *work) |
Flavio Leitner | 5a37e8c | 2010-10-05 14:23:57 +0000 | [diff] [blame] | 542 | { |
| 543 | struct bonding *bond = container_of(work, struct bonding, |
Flavio Leitner | 94265cf | 2011-05-25 08:38:58 +0000 | [diff] [blame] | 544 | mcast_work.work); |
Veaceslav Falico | ad999ee | 2013-03-26 04:10:02 +0000 | [diff] [blame] | 545 | |
dingtianhong | f236910 | 2013-12-13 10:20:26 +0800 | [diff] [blame] | 546 | if (!rtnl_trylock()) { |
| 547 | queue_delayed_work(bond->wq, &bond->mcast_work, 1); |
| 548 | return; |
| 549 | } |
| 550 | call_netdevice_notifiers(NETDEV_RESEND_IGMP, bond->dev); |
| 551 | |
| 552 | if (bond->igmp_retrans > 1) { |
| 553 | bond->igmp_retrans--; |
| 554 | queue_delayed_work(bond->wq, &bond->mcast_work, HZ/5); |
| 555 | } |
| 556 | rtnl_unlock(); |
Jay Vosburgh | a816c7c | 2007-02-28 17:03:37 -0800 | [diff] [blame] | 557 | } |
| 558 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 559 | /* Flush bond's hardware addresses from slave */ |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 560 | static void bond_hw_addr_flush(struct net_device *bond_dev, |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 561 | struct net_device *slave_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 563 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 565 | dev_uc_unsync(slave_dev, bond_dev); |
| 566 | dev_mc_unsync(slave_dev, bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 568 | if (BOND_MODE(bond) == BOND_MODE_8023AD) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | /* del lacpdu mc addr from mc list */ |
| 570 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; |
| 571 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 572 | dev_mc_del(slave_dev, lacpdu_multicast); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | } |
| 574 | } |
| 575 | |
| 576 | /*--------------------------- Active slave change ---------------------------*/ |
| 577 | |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 578 | /* Update the hardware address list and promisc/allmulti for the new and |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 579 | * old active slaves (if any). Modes that are not using primary keep all |
| 580 | * slaves up date at all times; only the modes that use primary need to call |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 581 | * this function to swap these settings during a failover. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | */ |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 583 | static void bond_hw_addr_swap(struct bonding *bond, struct slave *new_active, |
| 584 | struct slave *old_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | if (old_active) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 587 | if (bond->dev->flags & IFF_PROMISC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | dev_set_promiscuity(old_active->dev, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 590 | if (bond->dev->flags & IFF_ALLMULTI) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | dev_set_allmulti(old_active->dev, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 593 | bond_hw_addr_flush(bond->dev, old_active->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | } |
| 595 | |
| 596 | if (new_active) { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 597 | /* FIXME: Signal errors upstream. */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 598 | if (bond->dev->flags & IFF_PROMISC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | dev_set_promiscuity(new_active->dev, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 601 | if (bond->dev->flags & IFF_ALLMULTI) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | dev_set_allmulti(new_active->dev, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | |
nikolay@redhat.com | d632ce9 | 2013-04-18 07:33:38 +0000 | [diff] [blame] | 604 | netif_addr_lock_bh(bond->dev); |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 605 | dev_uc_sync(new_active->dev, bond->dev); |
| 606 | dev_mc_sync(new_active->dev, bond->dev); |
nikolay@redhat.com | d632ce9 | 2013-04-18 07:33:38 +0000 | [diff] [blame] | 607 | netif_addr_unlock_bh(bond->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | } |
| 609 | } |
| 610 | |
nikolay@redhat.com | ae0d675 | 2013-06-26 17:13:39 +0200 | [diff] [blame] | 611 | /** |
| 612 | * bond_set_dev_addr - clone slave's address to bond |
| 613 | * @bond_dev: bond net device |
| 614 | * @slave_dev: slave net device |
| 615 | * |
| 616 | * Should be called with RTNL held. |
| 617 | */ |
| 618 | static void bond_set_dev_addr(struct net_device *bond_dev, |
| 619 | struct net_device *slave_dev) |
| 620 | { |
Zhang Shengju | c6140a2 | 2016-02-02 08:32:55 +0000 | [diff] [blame] | 621 | netdev_dbg(bond_dev, "bond_dev=%p slave_dev=%p slave_dev->name=%s slave_dev->addr_len=%d\n", |
| 622 | bond_dev, slave_dev, slave_dev->name, slave_dev->addr_len); |
nikolay@redhat.com | ae0d675 | 2013-06-26 17:13:39 +0200 | [diff] [blame] | 623 | memcpy(bond_dev->dev_addr, slave_dev->dev_addr, slave_dev->addr_len); |
| 624 | bond_dev->addr_assign_type = NET_ADDR_STOLEN; |
| 625 | call_netdevice_notifiers(NETDEV_CHANGEADDR, bond_dev); |
| 626 | } |
| 627 | |
dingtianhong | a951bc1 | 2015-07-16 16:30:02 +0800 | [diff] [blame] | 628 | static struct slave *bond_get_old_active(struct bonding *bond, |
| 629 | struct slave *new_active) |
| 630 | { |
| 631 | struct slave *slave; |
| 632 | struct list_head *iter; |
| 633 | |
| 634 | bond_for_each_slave(bond, slave, iter) { |
| 635 | if (slave == new_active) |
| 636 | continue; |
| 637 | |
| 638 | if (ether_addr_equal(bond->dev->dev_addr, slave->dev->dev_addr)) |
| 639 | return slave; |
| 640 | } |
| 641 | |
| 642 | return NULL; |
| 643 | } |
| 644 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 645 | /* bond_do_fail_over_mac |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 646 | * |
| 647 | * Perform special MAC address swapping for fail_over_mac settings |
| 648 | * |
Nikolay Aleksandrov | 1c72cfdc9 | 2014-09-11 22:49:24 +0200 | [diff] [blame] | 649 | * Called with RTNL |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 650 | */ |
| 651 | static void bond_do_fail_over_mac(struct bonding *bond, |
| 652 | struct slave *new_active, |
| 653 | struct slave *old_active) |
| 654 | { |
| 655 | u8 tmp_mac[ETH_ALEN]; |
| 656 | struct sockaddr saddr; |
| 657 | int rv; |
| 658 | |
| 659 | switch (bond->params.fail_over_mac) { |
| 660 | case BOND_FOM_ACTIVE: |
Nikolay Aleksandrov | 1c72cfdc9 | 2014-09-11 22:49:24 +0200 | [diff] [blame] | 661 | if (new_active) |
nikolay@redhat.com | ae0d675 | 2013-06-26 17:13:39 +0200 | [diff] [blame] | 662 | bond_set_dev_addr(bond->dev, new_active->dev); |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 663 | break; |
| 664 | case BOND_FOM_FOLLOW: |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 665 | /* if new_active && old_active, swap them |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 666 | * if just old_active, do nothing (going to no active slave) |
| 667 | * if just new_active, set new_active to bond's MAC |
| 668 | */ |
| 669 | if (!new_active) |
| 670 | return; |
| 671 | |
dingtianhong | a951bc1 | 2015-07-16 16:30:02 +0800 | [diff] [blame] | 672 | if (!old_active) |
| 673 | old_active = bond_get_old_active(bond, new_active); |
| 674 | |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 675 | if (old_active) { |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 676 | ether_addr_copy(tmp_mac, new_active->dev->dev_addr); |
Joe Perches | 2a7c183 | 2014-02-18 09:42:45 -0800 | [diff] [blame] | 677 | ether_addr_copy(saddr.sa_data, |
| 678 | old_active->dev->dev_addr); |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 679 | saddr.sa_family = new_active->dev->type; |
| 680 | } else { |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 681 | ether_addr_copy(saddr.sa_data, bond->dev->dev_addr); |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 682 | saddr.sa_family = bond->dev->type; |
| 683 | } |
| 684 | |
| 685 | rv = dev_set_mac_address(new_active->dev, &saddr); |
| 686 | if (rv) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 687 | netdev_err(bond->dev, "Error %d setting MAC of slave %s\n", |
| 688 | -rv, new_active->dev->name); |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 689 | goto out; |
| 690 | } |
| 691 | |
| 692 | if (!old_active) |
| 693 | goto out; |
| 694 | |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 695 | ether_addr_copy(saddr.sa_data, tmp_mac); |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 696 | saddr.sa_family = old_active->dev->type; |
| 697 | |
| 698 | rv = dev_set_mac_address(old_active->dev, &saddr); |
| 699 | if (rv) |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 700 | netdev_err(bond->dev, "Error %d setting MAC of slave %s\n", |
| 701 | -rv, new_active->dev->name); |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 702 | out: |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 703 | break; |
| 704 | default: |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 705 | netdev_err(bond->dev, "bond_do_fail_over_mac impossible: bad policy %d\n", |
| 706 | bond->params.fail_over_mac); |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 707 | break; |
| 708 | } |
| 709 | |
| 710 | } |
| 711 | |
Mazhar Rana | b5a983f | 2015-07-07 15:04:50 +0530 | [diff] [blame] | 712 | static struct slave *bond_choose_primary_or_current(struct bonding *bond) |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 713 | { |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 714 | struct slave *prim = rtnl_dereference(bond->primary_slave); |
Nikolay Aleksandrov | 1c72cfdc9 | 2014-09-11 22:49:24 +0200 | [diff] [blame] | 715 | struct slave *curr = rtnl_dereference(bond->curr_active_slave); |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 716 | |
Mazhar Rana | b5a983f | 2015-07-07 15:04:50 +0530 | [diff] [blame] | 717 | if (!prim || prim->link != BOND_LINK_UP) { |
| 718 | if (!curr || curr->link != BOND_LINK_UP) |
| 719 | return NULL; |
| 720 | return curr; |
| 721 | } |
| 722 | |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 723 | if (bond->force_primary) { |
| 724 | bond->force_primary = false; |
Mazhar Rana | b5a983f | 2015-07-07 15:04:50 +0530 | [diff] [blame] | 725 | return prim; |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 726 | } |
Mazhar Rana | b5a983f | 2015-07-07 15:04:50 +0530 | [diff] [blame] | 727 | |
| 728 | if (!curr || curr->link != BOND_LINK_UP) |
| 729 | return prim; |
| 730 | |
| 731 | /* At this point, prim and curr are both up */ |
| 732 | switch (bond->params.primary_reselect) { |
| 733 | case BOND_PRI_RESELECT_ALWAYS: |
| 734 | return prim; |
| 735 | case BOND_PRI_RESELECT_BETTER: |
| 736 | if (prim->speed < curr->speed) |
| 737 | return curr; |
| 738 | if (prim->speed == curr->speed && prim->duplex <= curr->duplex) |
| 739 | return curr; |
| 740 | return prim; |
| 741 | case BOND_PRI_RESELECT_FAILURE: |
| 742 | return curr; |
| 743 | default: |
| 744 | netdev_err(bond->dev, "impossible primary_reselect %d\n", |
| 745 | bond->params.primary_reselect); |
| 746 | return curr; |
| 747 | } |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 748 | } |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 749 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | /** |
Mazhar Rana | b5a983f | 2015-07-07 15:04:50 +0530 | [diff] [blame] | 751 | * bond_find_best_slave - select the best available slave to be the active one |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | * @bond: our bonding struct |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | */ |
| 754 | static struct slave *bond_find_best_slave(struct bonding *bond) |
| 755 | { |
Mazhar Rana | b5a983f | 2015-07-07 15:04:50 +0530 | [diff] [blame] | 756 | struct slave *slave, *bestslave = NULL; |
Veaceslav Falico | 77140d2 | 2013-09-25 09:20:18 +0200 | [diff] [blame] | 757 | struct list_head *iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | int mintime = bond->params.updelay; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | |
Mazhar Rana | b5a983f | 2015-07-07 15:04:50 +0530 | [diff] [blame] | 760 | slave = bond_choose_primary_or_current(bond); |
| 761 | if (slave) |
| 762 | return slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
Veaceslav Falico | 77140d2 | 2013-09-25 09:20:18 +0200 | [diff] [blame] | 764 | bond_for_each_slave(bond, slave, iter) { |
| 765 | if (slave->link == BOND_LINK_UP) |
| 766 | return slave; |
Veaceslav Falico | b6adc61 | 2014-05-15 21:39:57 +0200 | [diff] [blame] | 767 | if (slave->link == BOND_LINK_BACK && bond_slave_is_up(slave) && |
Veaceslav Falico | 77140d2 | 2013-09-25 09:20:18 +0200 | [diff] [blame] | 768 | slave->delay < mintime) { |
| 769 | mintime = slave->delay; |
| 770 | bestslave = slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | } |
| 772 | } |
| 773 | |
| 774 | return bestslave; |
| 775 | } |
| 776 | |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 777 | static bool bond_should_notify_peers(struct bonding *bond) |
| 778 | { |
dingtianhong | 4cb4f97 | 2013-12-13 10:19:39 +0800 | [diff] [blame] | 779 | struct slave *slave; |
| 780 | |
| 781 | rcu_read_lock(); |
| 782 | slave = rcu_dereference(bond->curr_active_slave); |
| 783 | rcu_read_unlock(); |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 784 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 785 | netdev_dbg(bond->dev, "bond_should_notify_peers: slave %s\n", |
| 786 | slave ? slave->dev->name : "NULL"); |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 787 | |
| 788 | if (!slave || !bond->send_peer_notif || |
Venkat Venkatsubra | b02e3e9 | 2015-08-11 07:57:23 -0700 | [diff] [blame] | 789 | !netif_carrier_ok(bond->dev) || |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 790 | test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state)) |
| 791 | return false; |
| 792 | |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 793 | return true; |
| 794 | } |
| 795 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | /** |
| 797 | * change_active_interface - change the active slave into the specified one |
| 798 | * @bond: our bonding struct |
| 799 | * @new: the new slave to make the active one |
| 800 | * |
| 801 | * Set the new slave to the bond's settings and unset them on the old |
| 802 | * curr_active_slave. |
| 803 | * Setting include flags, mc-list, promiscuity, allmulti, etc. |
| 804 | * |
| 805 | * If @new's link state is %BOND_LINK_BACK we'll set it to %BOND_LINK_UP, |
| 806 | * because it is apparently the best available slave we have, even though its |
| 807 | * updelay hasn't timed out yet. |
| 808 | * |
Nikolay Aleksandrov | 1c72cfdc9 | 2014-09-11 22:49:24 +0200 | [diff] [blame] | 809 | * Caller must hold RTNL. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | */ |
Mitch Williams | a77b532 | 2005-11-09 10:35:51 -0800 | [diff] [blame] | 811 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | { |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 813 | struct slave *old_active; |
| 814 | |
Nikolay Aleksandrov | 1c72cfdc9 | 2014-09-11 22:49:24 +0200 | [diff] [blame] | 815 | ASSERT_RTNL(); |
| 816 | |
| 817 | old_active = rtnl_dereference(bond->curr_active_slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 819 | if (old_active == new_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | |
| 822 | if (new_active) { |
Veaceslav Falico | 8e60346 | 2014-02-18 07:48:46 +0100 | [diff] [blame] | 823 | new_active->last_link_up = jiffies; |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 824 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | if (new_active->link == BOND_LINK_BACK) { |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 826 | if (bond_uses_primary(bond)) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 827 | netdev_info(bond->dev, "making interface %s the new active one %d ms earlier\n", |
| 828 | new_active->dev->name, |
| 829 | (bond->params.updelay - new_active->delay) * bond->params.miimon); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | } |
| 831 | |
| 832 | new_active->delay = 0; |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 833 | bond_set_slave_link_state(new_active, BOND_LINK_UP, |
| 834 | BOND_SLAVE_NOTIFY_NOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 836 | if (BOND_MODE(bond) == BOND_MODE_8023AD) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | bond_3ad_handle_link_change(new_active, BOND_LINK_UP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 839 | if (bond_is_lb(bond)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | bond_alb_handle_link_change(bond, new_active, BOND_LINK_UP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | } else { |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 842 | if (bond_uses_primary(bond)) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 843 | netdev_info(bond->dev, "making interface %s the new active one\n", |
| 844 | new_active->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | } |
| 846 | } |
| 847 | } |
| 848 | |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 849 | if (bond_uses_primary(bond)) |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 850 | bond_hw_addr_swap(bond, new_active, old_active); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 852 | if (bond_is_lb(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | bond_alb_handle_active_change(bond, new_active); |
Jay Vosburgh | 8f903c7 | 2006-02-21 16:36:44 -0800 | [diff] [blame] | 854 | if (old_active) |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 855 | bond_set_slave_inactive_flags(old_active, |
| 856 | BOND_SLAVE_NOTIFY_NOW); |
Jay Vosburgh | 8f903c7 | 2006-02-21 16:36:44 -0800 | [diff] [blame] | 857 | if (new_active) |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 858 | bond_set_slave_active_flags(new_active, |
| 859 | BOND_SLAVE_NOTIFY_NOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | } else { |
nikolay@redhat.com | 278b208 | 2013-08-01 16:54:51 +0200 | [diff] [blame] | 861 | rcu_assign_pointer(bond->curr_active_slave, new_active); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | } |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 863 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 864 | if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 865 | if (old_active) |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 866 | bond_set_slave_inactive_flags(old_active, |
| 867 | BOND_SLAVE_NOTIFY_NOW); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 868 | |
| 869 | if (new_active) { |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 870 | bool should_notify_peers = false; |
| 871 | |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 872 | bond_set_slave_active_flags(new_active, |
| 873 | BOND_SLAVE_NOTIFY_NOW); |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 874 | |
Or Gerlitz | 709f8a4 | 2008-06-13 18:12:01 -0700 | [diff] [blame] | 875 | if (bond->params.fail_over_mac) |
| 876 | bond_do_fail_over_mac(bond, new_active, |
| 877 | old_active); |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 878 | |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 879 | if (netif_running(bond->dev)) { |
| 880 | bond->send_peer_notif = |
| 881 | bond->params.num_peer_notif; |
| 882 | should_notify_peers = |
| 883 | bond_should_notify_peers(bond); |
| 884 | } |
| 885 | |
Amerigo Wang | b7bc2a5 | 2012-08-09 22:14:57 +0000 | [diff] [blame] | 886 | call_netdevice_notifiers(NETDEV_BONDING_FAILOVER, bond->dev); |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 887 | if (should_notify_peers) |
Amerigo Wang | b7bc2a5 | 2012-08-09 22:14:57 +0000 | [diff] [blame] | 888 | call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, |
| 889 | bond->dev); |
Moni Shoua | 7893b24 | 2008-05-17 21:10:12 -0700 | [diff] [blame] | 890 | } |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 891 | } |
Andy Gospodarek | a2fd940 | 2010-03-25 14:49:05 +0000 | [diff] [blame] | 892 | |
Flavio Leitner | 5a37e8c | 2010-10-05 14:23:57 +0000 | [diff] [blame] | 893 | /* resend IGMP joins since active slave has changed or |
Flavio Leitner | 94265cf | 2011-05-25 08:38:58 +0000 | [diff] [blame] | 894 | * all were sent on curr_active_slave. |
| 895 | * resend only if bond is brought up with the affected |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 896 | * bonding modes and the retransmission is enabled |
| 897 | */ |
Flavio Leitner | 94265cf | 2011-05-25 08:38:58 +0000 | [diff] [blame] | 898 | if (netif_running(bond->dev) && (bond->params.resend_igmp > 0) && |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 899 | ((bond_uses_primary(bond) && new_active) || |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 900 | BOND_MODE(bond) == BOND_MODE_ROUNDROBIN)) { |
Flavio Leitner | c2952c3 | 2010-10-05 14:23:59 +0000 | [diff] [blame] | 901 | bond->igmp_retrans = bond->params.resend_igmp; |
Nikolay Aleksandrov | 4beac02 | 2013-08-01 11:51:42 +0200 | [diff] [blame] | 902 | queue_delayed_work(bond->wq, &bond->mcast_work, 1); |
Andy Gospodarek | a2fd940 | 2010-03-25 14:49:05 +0000 | [diff] [blame] | 903 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | } |
| 905 | |
| 906 | /** |
| 907 | * bond_select_active_slave - select a new active slave, if needed |
| 908 | * @bond: our bonding struct |
| 909 | * |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 910 | * This functions should be called when one of the following occurs: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | * - The old curr_active_slave has been released or lost its link. |
| 912 | * - The primary_slave has got its link back. |
| 913 | * - A slave has got its link back and there's no old curr_active_slave. |
| 914 | * |
Nikolay Aleksandrov | 1c72cfdc9 | 2014-09-11 22:49:24 +0200 | [diff] [blame] | 915 | * Caller must hold RTNL. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | */ |
Mitch Williams | a77b532 | 2005-11-09 10:35:51 -0800 | [diff] [blame] | 917 | void bond_select_active_slave(struct bonding *bond) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | { |
| 919 | struct slave *best_slave; |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 920 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | |
Nikolay Aleksandrov | e097458 | 2014-09-15 17:19:35 +0200 | [diff] [blame] | 922 | ASSERT_RTNL(); |
| 923 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | best_slave = bond_find_best_slave(bond); |
Nikolay Aleksandrov | 1c72cfdc9 | 2014-09-11 22:49:24 +0200 | [diff] [blame] | 925 | if (best_slave != rtnl_dereference(bond->curr_active_slave)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | bond_change_active_slave(bond, best_slave); |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 927 | rv = bond_set_carrier(bond); |
| 928 | if (!rv) |
| 929 | return; |
| 930 | |
Zhang Shengju | d66bd90 | 2016-02-03 02:02:32 +0000 | [diff] [blame] | 931 | if (netif_carrier_ok(bond->dev)) |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 932 | netdev_info(bond->dev, "first active interface up!\n"); |
Zhang Shengju | d66bd90 | 2016-02-03 02:02:32 +0000 | [diff] [blame] | 933 | else |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 934 | netdev_info(bond->dev, "now running without any active interface!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | } |
| 936 | } |
| 937 | |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 938 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 939 | static inline int slave_enable_netpoll(struct slave *slave) |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 940 | { |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 941 | struct netpoll *np; |
| 942 | int err = 0; |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 943 | |
Eric W. Biederman | a8779ec | 2014-03-27 15:36:38 -0700 | [diff] [blame] | 944 | np = kzalloc(sizeof(*np), GFP_KERNEL); |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 945 | err = -ENOMEM; |
| 946 | if (!np) |
| 947 | goto out; |
| 948 | |
Eric W. Biederman | a8779ec | 2014-03-27 15:36:38 -0700 | [diff] [blame] | 949 | err = __netpoll_setup(np, slave->dev); |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 950 | if (err) { |
| 951 | kfree(np); |
| 952 | goto out; |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 953 | } |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 954 | slave->np = np; |
| 955 | out: |
| 956 | return err; |
| 957 | } |
| 958 | static inline void slave_disable_netpoll(struct slave *slave) |
| 959 | { |
| 960 | struct netpoll *np = slave->np; |
| 961 | |
| 962 | if (!np) |
| 963 | return; |
| 964 | |
| 965 | slave->np = NULL; |
Neil Horman | 2cde6ac | 2013-02-11 10:25:30 +0000 | [diff] [blame] | 966 | __netpoll_free_async(np); |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 967 | } |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 968 | |
| 969 | static void bond_poll_controller(struct net_device *bond_dev) |
| 970 | { |
Mahesh Bandewar | 616f454 | 2015-03-04 21:57:52 -0800 | [diff] [blame] | 971 | struct bonding *bond = netdev_priv(bond_dev); |
| 972 | struct slave *slave = NULL; |
| 973 | struct list_head *iter; |
| 974 | struct ad_info ad_info; |
| 975 | struct netpoll_info *ni; |
| 976 | const struct net_device_ops *ops; |
| 977 | |
| 978 | if (BOND_MODE(bond) == BOND_MODE_8023AD) |
| 979 | if (bond_3ad_get_active_agg_info(bond, &ad_info)) |
| 980 | return; |
| 981 | |
Mahesh Bandewar | 616f454 | 2015-03-04 21:57:52 -0800 | [diff] [blame] | 982 | bond_for_each_slave_rcu(bond, slave, iter) { |
| 983 | ops = slave->dev->netdev_ops; |
| 984 | if (!bond_slave_is_up(slave) || !ops->ndo_poll_controller) |
| 985 | continue; |
| 986 | |
| 987 | if (BOND_MODE(bond) == BOND_MODE_8023AD) { |
| 988 | struct aggregator *agg = |
| 989 | SLAVE_AD_INFO(slave)->port.aggregator; |
| 990 | |
| 991 | if (agg && |
| 992 | agg->aggregator_identifier != ad_info.aggregator_id) |
| 993 | continue; |
| 994 | } |
| 995 | |
| 996 | ni = rcu_dereference_bh(slave->dev->npinfo); |
| 997 | if (down_trylock(&ni->dev_lock)) |
| 998 | continue; |
| 999 | ops->ndo_poll_controller(slave->dev); |
| 1000 | up(&ni->dev_lock); |
| 1001 | } |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1002 | } |
| 1003 | |
dingtianhong | c4cdef9 | 2013-07-23 15:25:27 +0800 | [diff] [blame] | 1004 | static void bond_netpoll_cleanup(struct net_device *bond_dev) |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1005 | { |
dingtianhong | c4cdef9 | 2013-07-23 15:25:27 +0800 | [diff] [blame] | 1006 | struct bonding *bond = netdev_priv(bond_dev); |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1007 | struct list_head *iter; |
Neil Horman | c2355e1 | 2010-10-13 16:01:49 +0000 | [diff] [blame] | 1008 | struct slave *slave; |
Neil Horman | c2355e1 | 2010-10-13 16:01:49 +0000 | [diff] [blame] | 1009 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1010 | bond_for_each_slave(bond, slave, iter) |
Veaceslav Falico | b6adc61 | 2014-05-15 21:39:57 +0200 | [diff] [blame] | 1011 | if (bond_slave_is_up(slave)) |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1012 | slave_disable_netpoll(slave); |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 1013 | } |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 1014 | |
Eric W. Biederman | a8779ec | 2014-03-27 15:36:38 -0700 | [diff] [blame] | 1015 | static int bond_netpoll_setup(struct net_device *dev, struct netpoll_info *ni) |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1016 | { |
| 1017 | struct bonding *bond = netdev_priv(dev); |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1018 | struct list_head *iter; |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1019 | struct slave *slave; |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 1020 | int err = 0; |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 1021 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1022 | bond_for_each_slave(bond, slave, iter) { |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1023 | err = slave_enable_netpoll(slave); |
| 1024 | if (err) { |
dingtianhong | c4cdef9 | 2013-07-23 15:25:27 +0800 | [diff] [blame] | 1025 | bond_netpoll_cleanup(dev); |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1026 | break; |
| 1027 | } |
| 1028 | } |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1029 | return err; |
| 1030 | } |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1031 | #else |
| 1032 | static inline int slave_enable_netpoll(struct slave *slave) |
| 1033 | { |
| 1034 | return 0; |
| 1035 | } |
| 1036 | static inline void slave_disable_netpoll(struct slave *slave) |
| 1037 | { |
| 1038 | } |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 1039 | static void bond_netpoll_cleanup(struct net_device *bond_dev) |
| 1040 | { |
| 1041 | } |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 1042 | #endif |
| 1043 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | /*---------------------------------- IOCTL ----------------------------------*/ |
| 1045 | |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1046 | static netdev_features_t bond_fix_features(struct net_device *dev, |
nikolay@redhat.com | 9b7b165 | 2013-09-02 13:51:41 +0200 | [diff] [blame] | 1047 | netdev_features_t features) |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1048 | { |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1049 | struct bonding *bond = netdev_priv(dev); |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1050 | struct list_head *iter; |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1051 | netdev_features_t mask; |
nikolay@redhat.com | 9b7b165 | 2013-09-02 13:51:41 +0200 | [diff] [blame] | 1052 | struct slave *slave; |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1053 | |
Scott Feldman | 7889cbe | 2015-05-10 09:48:07 -0700 | [diff] [blame] | 1054 | mask = features; |
Roopa Prabhu | c158cba | 2015-01-29 22:40:16 -0800 | [diff] [blame] | 1055 | |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1056 | features &= ~NETIF_F_ONE_FOR_ALL; |
| 1057 | features |= NETIF_F_ALL_FOR_ALL; |
| 1058 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1059 | bond_for_each_slave(bond, slave, iter) { |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1060 | features = netdev_increment_features(features, |
| 1061 | slave->dev->features, |
| 1062 | mask); |
| 1063 | } |
Eric Dumazet | b0ce350 | 2013-05-16 07:34:53 +0000 | [diff] [blame] | 1064 | features = netdev_add_tso_features(features, mask); |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1065 | |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1066 | return features; |
| 1067 | } |
| 1068 | |
Tom Herbert | a188222 | 2015-12-14 11:19:43 -0800 | [diff] [blame] | 1069 | #define BOND_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ |
Michał Mirosław | 62f2a3a | 2011-07-13 14:10:29 +0000 | [diff] [blame] | 1070 | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ |
| 1071 | NETIF_F_HIGHDMA | NETIF_F_LRO) |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1072 | |
Tom Herbert | a188222 | 2015-12-14 11:19:43 -0800 | [diff] [blame] | 1073 | #define BOND_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ |
| 1074 | NETIF_F_RXCSUM | NETIF_F_ALL_TSO) |
Or Gerlitz | 5a7baa7 | 2014-06-17 16:11:09 +0300 | [diff] [blame] | 1075 | |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1076 | static void bond_compute_features(struct bonding *bond) |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 1077 | { |
Eric Dumazet | 0287587 | 2014-10-05 18:38:35 -0700 | [diff] [blame] | 1078 | unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE | |
| 1079 | IFF_XMIT_DST_RELEASE_PERM; |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1080 | netdev_features_t vlan_features = BOND_VLAN_FEATURES; |
Or Gerlitz | 5a7baa7 | 2014-06-17 16:11:09 +0300 | [diff] [blame] | 1081 | netdev_features_t enc_features = BOND_ENC_FEATURES; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1082 | struct net_device *bond_dev = bond->dev; |
| 1083 | struct list_head *iter; |
| 1084 | struct slave *slave; |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1085 | unsigned short max_hard_header_len = ETH_HLEN; |
Sarveshwar Bandi | 0e376bd | 2012-11-21 04:35:03 +0000 | [diff] [blame] | 1086 | unsigned int gso_max_size = GSO_MAX_SIZE; |
| 1087 | u16 gso_max_segs = GSO_MAX_SEGS; |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 1088 | |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 1089 | if (!bond_has_slaves(bond)) |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 1090 | goto done; |
Michal Kubeček | a9b3ace | 2014-05-20 08:29:35 +0200 | [diff] [blame] | 1091 | vlan_features &= NETIF_F_ALL_FOR_ALL; |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 1092 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 1093 | bond_for_each_slave(bond, slave, iter) { |
Jay Vosburgh | 278339a | 2009-08-28 12:05:12 +0000 | [diff] [blame] | 1094 | vlan_features = netdev_increment_features(vlan_features, |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1095 | slave->dev->vlan_features, BOND_VLAN_FEATURES); |
| 1096 | |
Or Gerlitz | 5a7baa7 | 2014-06-17 16:11:09 +0300 | [diff] [blame] | 1097 | enc_features = netdev_increment_features(enc_features, |
| 1098 | slave->dev->hw_enc_features, |
| 1099 | BOND_ENC_FEATURES); |
Eric Dumazet | b6fe83e | 2012-07-17 12:19:48 +0000 | [diff] [blame] | 1100 | dst_release_flag &= slave->dev->priv_flags; |
Jay Vosburgh | 54ef313 | 2006-09-22 21:53:39 -0700 | [diff] [blame] | 1101 | if (slave->dev->hard_header_len > max_hard_header_len) |
| 1102 | max_hard_header_len = slave->dev->hard_header_len; |
Sarveshwar Bandi | 0e376bd | 2012-11-21 04:35:03 +0000 | [diff] [blame] | 1103 | |
| 1104 | gso_max_size = min(gso_max_size, slave->dev->gso_max_size); |
| 1105 | gso_max_segs = min(gso_max_segs, slave->dev->gso_max_segs); |
Jay Vosburgh | 54ef313 | 2006-09-22 21:53:39 -0700 | [diff] [blame] | 1106 | } |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 1107 | |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 1108 | done: |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1109 | bond_dev->vlan_features = vlan_features; |
Eric Dumazet | 24f87d4 | 2015-01-25 23:27:14 -0800 | [diff] [blame] | 1110 | bond_dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL; |
Jay Vosburgh | 54ef313 | 2006-09-22 21:53:39 -0700 | [diff] [blame] | 1111 | bond_dev->hard_header_len = max_hard_header_len; |
Sarveshwar Bandi | 0e376bd | 2012-11-21 04:35:03 +0000 | [diff] [blame] | 1112 | bond_dev->gso_max_segs = gso_max_segs; |
| 1113 | netif_set_gso_max_size(bond_dev, gso_max_size); |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 1114 | |
Eric Dumazet | 0287587 | 2014-10-05 18:38:35 -0700 | [diff] [blame] | 1115 | bond_dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; |
| 1116 | if ((bond_dev->priv_flags & IFF_XMIT_DST_RELEASE_PERM) && |
| 1117 | dst_release_flag == (IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM)) |
| 1118 | bond_dev->priv_flags |= IFF_XMIT_DST_RELEASE; |
Eric Dumazet | b6fe83e | 2012-07-17 12:19:48 +0000 | [diff] [blame] | 1119 | |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1120 | netdev_change_features(bond_dev); |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 1121 | } |
| 1122 | |
Moni Shoua | 872254d | 2007-10-09 19:43:38 -0700 | [diff] [blame] | 1123 | static void bond_setup_by_slave(struct net_device *bond_dev, |
| 1124 | struct net_device *slave_dev) |
| 1125 | { |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 1126 | bond_dev->header_ops = slave_dev->header_ops; |
Moni Shoua | 872254d | 2007-10-09 19:43:38 -0700 | [diff] [blame] | 1127 | |
| 1128 | bond_dev->type = slave_dev->type; |
| 1129 | bond_dev->hard_header_len = slave_dev->hard_header_len; |
| 1130 | bond_dev->addr_len = slave_dev->addr_len; |
| 1131 | |
| 1132 | memcpy(bond_dev->broadcast, slave_dev->broadcast, |
| 1133 | slave_dev->addr_len); |
| 1134 | } |
| 1135 | |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1136 | /* On bonding slaves other than the currently active slave, suppress |
Jiri Pirko | 3aba891 | 2011-04-19 03:48:16 +0000 | [diff] [blame] | 1137 | * duplicates except for alb non-mcast/bcast. |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1138 | */ |
| 1139 | static bool bond_should_deliver_exact_match(struct sk_buff *skb, |
Jiri Pirko | 0bd80da | 2011-03-16 08:45:23 +0000 | [diff] [blame] | 1140 | struct slave *slave, |
| 1141 | struct bonding *bond) |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1142 | { |
Jiri Pirko | 2d7011c | 2011-03-16 08:46:43 +0000 | [diff] [blame] | 1143 | if (bond_is_slave_inactive(slave)) { |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 1144 | if (BOND_MODE(bond) == BOND_MODE_ALB && |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1145 | skb->pkt_type != PACKET_BROADCAST && |
| 1146 | skb->pkt_type != PACKET_MULTICAST) |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1147 | return false; |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1148 | return true; |
| 1149 | } |
| 1150 | return false; |
| 1151 | } |
| 1152 | |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 1153 | static rx_handler_result_t bond_handle_frame(struct sk_buff **pskb) |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1154 | { |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 1155 | struct sk_buff *skb = *pskb; |
Jiri Pirko | f1c1775 | 2011-03-12 03:14:35 +0000 | [diff] [blame] | 1156 | struct slave *slave; |
Jiri Pirko | 0bd80da | 2011-03-16 08:45:23 +0000 | [diff] [blame] | 1157 | struct bonding *bond; |
Eric Dumazet | de063b7 | 2012-06-11 19:23:07 +0000 | [diff] [blame] | 1158 | int (*recv_probe)(const struct sk_buff *, struct bonding *, |
| 1159 | struct slave *); |
Jiri Bohac | 13a8e0c | 2012-05-09 01:01:40 +0000 | [diff] [blame] | 1160 | int ret = RX_HANDLER_ANOTHER; |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1161 | |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 1162 | skb = skb_share_check(skb, GFP_ATOMIC); |
| 1163 | if (unlikely(!skb)) |
| 1164 | return RX_HANDLER_CONSUMED; |
| 1165 | |
| 1166 | *pskb = skb; |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1167 | |
Jiri Pirko | 35d4890 | 2011-03-22 02:38:12 +0000 | [diff] [blame] | 1168 | slave = bond_slave_get_rcu(skb->dev); |
| 1169 | bond = slave->bond; |
Jiri Pirko | 0bd80da | 2011-03-16 08:45:23 +0000 | [diff] [blame] | 1170 | |
Mitsuo Hayasaka | 4d97480 | 2011-10-12 16:04:29 +0000 | [diff] [blame] | 1171 | recv_probe = ACCESS_ONCE(bond->recv_probe); |
| 1172 | if (recv_probe) { |
Eric Dumazet | de063b7 | 2012-06-11 19:23:07 +0000 | [diff] [blame] | 1173 | ret = recv_probe(skb, bond, slave); |
| 1174 | if (ret == RX_HANDLER_CONSUMED) { |
| 1175 | consume_skb(skb); |
| 1176 | return ret; |
Jiri Pirko | 3aba891 | 2011-04-19 03:48:16 +0000 | [diff] [blame] | 1177 | } |
| 1178 | } |
| 1179 | |
Zhang Shengju | d66bd90 | 2016-02-03 02:02:32 +0000 | [diff] [blame] | 1180 | if (bond_should_deliver_exact_match(skb, slave, bond)) |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 1181 | return RX_HANDLER_EXACT; |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1182 | |
Jiri Pirko | 35d4890 | 2011-03-22 02:38:12 +0000 | [diff] [blame] | 1183 | skb->dev = bond->dev; |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1184 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 1185 | if (BOND_MODE(bond) == BOND_MODE_ALB && |
Jiri Pirko | 35d4890 | 2011-03-22 02:38:12 +0000 | [diff] [blame] | 1186 | bond->dev->priv_flags & IFF_BRIDGE_PORT && |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1187 | skb->pkt_type == PACKET_HOST) { |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1188 | |
Changli Gao | 541ac7c | 2011-03-02 21:07:14 +0000 | [diff] [blame] | 1189 | if (unlikely(skb_cow_head(skb, |
| 1190 | skb->data - skb_mac_header(skb)))) { |
| 1191 | kfree_skb(skb); |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 1192 | return RX_HANDLER_CONSUMED; |
Changli Gao | 541ac7c | 2011-03-02 21:07:14 +0000 | [diff] [blame] | 1193 | } |
Joe Perches | 2a7c183 | 2014-02-18 09:42:45 -0800 | [diff] [blame] | 1194 | ether_addr_copy(eth_hdr(skb)->h_dest, bond->dev->dev_addr); |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1195 | } |
| 1196 | |
Jiri Bohac | 13a8e0c | 2012-05-09 01:01:40 +0000 | [diff] [blame] | 1197 | return ret; |
Jiri Pirko | 5b2c4dd | 2011-02-23 09:05:42 +0000 | [diff] [blame] | 1198 | } |
| 1199 | |
Jiri Pirko | 41f0b04 | 2015-12-03 12:12:14 +0100 | [diff] [blame] | 1200 | static enum netdev_lag_tx_type bond_lag_tx_type(struct bonding *bond) |
Jiri Pirko | 471cb5a | 2013-01-03 22:49:01 +0000 | [diff] [blame] | 1201 | { |
Jiri Pirko | 41f0b04 | 2015-12-03 12:12:14 +0100 | [diff] [blame] | 1202 | switch (BOND_MODE(bond)) { |
| 1203 | case BOND_MODE_ROUNDROBIN: |
| 1204 | return NETDEV_LAG_TX_TYPE_ROUNDROBIN; |
| 1205 | case BOND_MODE_ACTIVEBACKUP: |
| 1206 | return NETDEV_LAG_TX_TYPE_ACTIVEBACKUP; |
| 1207 | case BOND_MODE_BROADCAST: |
| 1208 | return NETDEV_LAG_TX_TYPE_BROADCAST; |
| 1209 | case BOND_MODE_XOR: |
| 1210 | case BOND_MODE_8023AD: |
| 1211 | return NETDEV_LAG_TX_TYPE_HASH; |
| 1212 | default: |
| 1213 | return NETDEV_LAG_TX_TYPE_UNKNOWN; |
| 1214 | } |
| 1215 | } |
| 1216 | |
| 1217 | static int bond_master_upper_dev_link(struct bonding *bond, struct slave *slave) |
| 1218 | { |
| 1219 | struct netdev_lag_upper_info lag_upper_info; |
Jiri Pirko | 471cb5a | 2013-01-03 22:49:01 +0000 | [diff] [blame] | 1220 | int err; |
| 1221 | |
Jiri Pirko | 41f0b04 | 2015-12-03 12:12:14 +0100 | [diff] [blame] | 1222 | lag_upper_info.tx_type = bond_lag_tx_type(bond); |
| 1223 | err = netdev_master_upper_dev_link(slave->dev, bond->dev, slave, |
| 1224 | &lag_upper_info); |
Jiri Pirko | 471cb5a | 2013-01-03 22:49:01 +0000 | [diff] [blame] | 1225 | if (err) |
| 1226 | return err; |
Jiri Pirko | 41f0b04 | 2015-12-03 12:12:14 +0100 | [diff] [blame] | 1227 | rtmsg_ifinfo(RTM_NEWLINK, slave->dev, IFF_SLAVE, GFP_KERNEL); |
Jiri Pirko | 471cb5a | 2013-01-03 22:49:01 +0000 | [diff] [blame] | 1228 | return 0; |
| 1229 | } |
| 1230 | |
Jiri Pirko | 41f0b04 | 2015-12-03 12:12:14 +0100 | [diff] [blame] | 1231 | static void bond_upper_dev_unlink(struct bonding *bond, struct slave *slave) |
Jiri Pirko | 471cb5a | 2013-01-03 22:49:01 +0000 | [diff] [blame] | 1232 | { |
Jiri Pirko | 41f0b04 | 2015-12-03 12:12:14 +0100 | [diff] [blame] | 1233 | netdev_upper_dev_unlink(slave->dev, bond->dev); |
| 1234 | slave->dev->flags &= ~IFF_SLAVE; |
| 1235 | rtmsg_ifinfo(RTM_NEWLINK, slave->dev, IFF_SLAVE, GFP_KERNEL); |
Jiri Pirko | 471cb5a | 2013-01-03 22:49:01 +0000 | [diff] [blame] | 1236 | } |
| 1237 | |
dingtianhong | 3fdddd8 | 2014-05-12 15:08:43 +0800 | [diff] [blame] | 1238 | static struct slave *bond_alloc_slave(struct bonding *bond) |
| 1239 | { |
| 1240 | struct slave *slave = NULL; |
| 1241 | |
Zhang Shengju | d66bd90 | 2016-02-03 02:02:32 +0000 | [diff] [blame] | 1242 | slave = kzalloc(sizeof(*slave), GFP_KERNEL); |
dingtianhong | 3fdddd8 | 2014-05-12 15:08:43 +0800 | [diff] [blame] | 1243 | if (!slave) |
| 1244 | return NULL; |
| 1245 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 1246 | if (BOND_MODE(bond) == BOND_MODE_8023AD) { |
dingtianhong | 3fdddd8 | 2014-05-12 15:08:43 +0800 | [diff] [blame] | 1247 | SLAVE_AD_INFO(slave) = kzalloc(sizeof(struct ad_slave_info), |
| 1248 | GFP_KERNEL); |
| 1249 | if (!SLAVE_AD_INFO(slave)) { |
| 1250 | kfree(slave); |
| 1251 | return NULL; |
| 1252 | } |
| 1253 | } |
| 1254 | return slave; |
| 1255 | } |
| 1256 | |
| 1257 | static void bond_free_slave(struct slave *slave) |
| 1258 | { |
| 1259 | struct bonding *bond = bond_get_bond_by_slave(slave); |
| 1260 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 1261 | if (BOND_MODE(bond) == BOND_MODE_8023AD) |
dingtianhong | 3fdddd8 | 2014-05-12 15:08:43 +0800 | [diff] [blame] | 1262 | kfree(SLAVE_AD_INFO(slave)); |
| 1263 | |
| 1264 | kfree(slave); |
| 1265 | } |
| 1266 | |
Moni Shoua | 69a2338 | 2015-02-03 16:48:30 +0200 | [diff] [blame] | 1267 | static void bond_fill_ifbond(struct bonding *bond, struct ifbond *info) |
| 1268 | { |
| 1269 | info->bond_mode = BOND_MODE(bond); |
| 1270 | info->miimon = bond->params.miimon; |
| 1271 | info->num_slaves = bond->slave_cnt; |
| 1272 | } |
| 1273 | |
| 1274 | static void bond_fill_ifslave(struct slave *slave, struct ifslave *info) |
| 1275 | { |
| 1276 | strcpy(info->slave_name, slave->dev->name); |
| 1277 | info->link = slave->link; |
| 1278 | info->state = bond_slave_state(slave); |
| 1279 | info->link_failure_count = slave->link_failure_count; |
| 1280 | } |
| 1281 | |
Moni Shoua | 92e584f | 2015-02-08 11:49:32 +0200 | [diff] [blame] | 1282 | static void bond_netdev_notify(struct net_device *dev, |
| 1283 | struct netdev_bonding_info *info) |
Moni Shoua | 69e6113 | 2015-02-03 16:48:31 +0200 | [diff] [blame] | 1284 | { |
Moni Shoua | 69e6113 | 2015-02-03 16:48:31 +0200 | [diff] [blame] | 1285 | rtnl_lock(); |
Moni Shoua | 92e584f | 2015-02-08 11:49:32 +0200 | [diff] [blame] | 1286 | netdev_bonding_info_change(dev, info); |
Moni Shoua | 69e6113 | 2015-02-03 16:48:31 +0200 | [diff] [blame] | 1287 | rtnl_unlock(); |
| 1288 | } |
| 1289 | |
| 1290 | static void bond_netdev_notify_work(struct work_struct *_work) |
| 1291 | { |
| 1292 | struct netdev_notify_work *w = |
| 1293 | container_of(_work, struct netdev_notify_work, work.work); |
| 1294 | |
Moni Shoua | 92e584f | 2015-02-08 11:49:32 +0200 | [diff] [blame] | 1295 | bond_netdev_notify(w->dev, &w->bonding_info); |
Moni Shoua | 69e6113 | 2015-02-03 16:48:31 +0200 | [diff] [blame] | 1296 | dev_put(w->dev); |
Moni Shoua | 92e584f | 2015-02-08 11:49:32 +0200 | [diff] [blame] | 1297 | kfree(w); |
Moni Shoua | 69e6113 | 2015-02-03 16:48:31 +0200 | [diff] [blame] | 1298 | } |
| 1299 | |
| 1300 | void bond_queue_slave_event(struct slave *slave) |
| 1301 | { |
Moni Shoua | 92e584f | 2015-02-08 11:49:32 +0200 | [diff] [blame] | 1302 | struct bonding *bond = slave->bond; |
Moni Shoua | 69e6113 | 2015-02-03 16:48:31 +0200 | [diff] [blame] | 1303 | struct netdev_notify_work *nnw = kzalloc(sizeof(*nnw), GFP_ATOMIC); |
| 1304 | |
| 1305 | if (!nnw) |
| 1306 | return; |
| 1307 | |
Moni Shoua | 92e584f | 2015-02-08 11:49:32 +0200 | [diff] [blame] | 1308 | dev_hold(slave->dev); |
Moni Shoua | 69e6113 | 2015-02-03 16:48:31 +0200 | [diff] [blame] | 1309 | nnw->dev = slave->dev; |
Moni Shoua | 92e584f | 2015-02-08 11:49:32 +0200 | [diff] [blame] | 1310 | bond_fill_ifslave(slave, &nnw->bonding_info.slave); |
| 1311 | bond_fill_ifbond(bond, &nnw->bonding_info.master); |
| 1312 | INIT_DELAYED_WORK(&nnw->work, bond_netdev_notify_work); |
Moni Shoua | 69e6113 | 2015-02-03 16:48:31 +0200 | [diff] [blame] | 1313 | |
Moni Shoua | 92e584f | 2015-02-08 11:49:32 +0200 | [diff] [blame] | 1314 | queue_delayed_work(slave->bond->wq, &nnw->work, 0); |
Moni Shoua | 69e6113 | 2015-02-03 16:48:31 +0200 | [diff] [blame] | 1315 | } |
| 1316 | |
Jiri Pirko | f7c7eb7 | 2015-12-03 12:12:20 +0100 | [diff] [blame] | 1317 | void bond_lower_state_changed(struct slave *slave) |
| 1318 | { |
| 1319 | struct netdev_lag_lower_state_info info; |
| 1320 | |
| 1321 | info.link_up = slave->link == BOND_LINK_UP || |
| 1322 | slave->link == BOND_LINK_FAIL; |
| 1323 | info.tx_enabled = bond_is_active_slave(slave); |
| 1324 | netdev_lower_state_changed(slave->dev, &info); |
| 1325 | } |
| 1326 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | /* enslave device <slave> to bond device <master> */ |
Mitch Williams | a77b532 | 2005-11-09 10:35:51 -0800 | [diff] [blame] | 1328 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 1330 | struct bonding *bond = netdev_priv(bond_dev); |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 1331 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
Veaceslav Falico | c8c2390 | 2013-09-25 09:20:25 +0200 | [diff] [blame] | 1332 | struct slave *new_slave = NULL, *prev_slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | struct sockaddr addr; |
| 1334 | int link_reporting; |
Veaceslav Falico | 8599b52 | 2013-06-24 11:49:34 +0200 | [diff] [blame] | 1335 | int res = 0, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | |
Ben Hutchings | c772dde | 2012-12-07 06:15:32 +0000 | [diff] [blame] | 1337 | if (!bond->params.use_carrier && |
| 1338 | slave_dev->ethtool_ops->get_link == NULL && |
| 1339 | slave_ops->ndo_do_ioctl == NULL) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1340 | netdev_warn(bond_dev, "no link monitoring support for %s\n", |
| 1341 | slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | } |
| 1343 | |
Mahesh Bandewar | 24b27fc | 2016-09-01 22:18:34 -0700 | [diff] [blame] | 1344 | /* already in-use? */ |
| 1345 | if (netdev_is_rx_handler_busy(slave_dev)) { |
| 1346 | netdev_err(bond_dev, |
| 1347 | "Error: Device is in use and cannot be enslaved\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | return -EBUSY; |
| 1349 | } |
| 1350 | |
Jiri Bohac | 09a89c2 | 2014-02-26 18:20:13 +0100 | [diff] [blame] | 1351 | if (bond_dev == slave_dev) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1352 | netdev_err(bond_dev, "cannot enslave bond to itself.\n"); |
Jiri Bohac | 09a89c2 | 2014-02-26 18:20:13 +0100 | [diff] [blame] | 1353 | return -EPERM; |
| 1354 | } |
| 1355 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | /* vlan challenged mutual exclusion */ |
| 1357 | /* no need to lock since we're protected by rtnl_lock */ |
| 1358 | if (slave_dev->features & NETIF_F_VLAN_CHALLENGED) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1359 | netdev_dbg(bond_dev, "%s is NETIF_F_VLAN_CHALLENGED\n", |
| 1360 | slave_dev->name); |
Jiri Pirko | 55462cf | 2012-10-14 04:30:56 +0000 | [diff] [blame] | 1361 | if (vlan_uses_dev(bond_dev)) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1362 | netdev_err(bond_dev, "Error: cannot enslave VLAN challenged slave %s on VLAN enabled bond %s\n", |
| 1363 | slave_dev->name, bond_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | return -EPERM; |
| 1365 | } else { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1366 | netdev_warn(bond_dev, "enslaved VLAN challenged slave %s. Adding VLANs will be blocked as long as %s is part of bond %s\n", |
| 1367 | slave_dev->name, slave_dev->name, |
| 1368 | bond_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | } |
| 1370 | } else { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1371 | netdev_dbg(bond_dev, "%s is !NETIF_F_VLAN_CHALLENGED\n", |
| 1372 | slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | } |
| 1374 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1375 | /* Old ifenslave binaries are no longer supported. These can |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1376 | * be identified with moderate accuracy by the state of the slave: |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 1377 | * the current ifenslave will set the interface down prior to |
| 1378 | * enslaving it; the old ifenslave will not. |
| 1379 | */ |
yzhu1 | ce3ea1c | 2015-12-03 18:00:55 +0800 | [diff] [blame] | 1380 | if (slave_dev->flags & IFF_UP) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1381 | netdev_err(bond_dev, "%s is up - this may be due to an out of date ifenslave\n", |
| 1382 | slave_dev->name); |
Zhang Shengju | 1e2a886 | 2016-02-09 10:37:46 +0000 | [diff] [blame] | 1383 | return -EPERM; |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 1384 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | |
Moni Shoua | 872254d | 2007-10-09 19:43:38 -0700 | [diff] [blame] | 1386 | /* set bonding device ether type by slave - bonding netdevices are |
| 1387 | * created with ether_setup, so when the slave type is not ARPHRD_ETHER |
| 1388 | * there is a need to override some of the type dependent attribs/funcs. |
| 1389 | * |
| 1390 | * bond ether type mutual exclusion - don't allow slaves of dissimilar |
| 1391 | * ether type (eg ARPHRD_ETHER and ARPHRD_INFINIBAND) share the same bond |
| 1392 | */ |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 1393 | if (!bond_has_slaves(bond)) { |
Moni Shoua | e36b9d1 | 2009-07-15 04:56:31 +0000 | [diff] [blame] | 1394 | if (bond_dev->type != slave_dev->type) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1395 | netdev_dbg(bond_dev, "change device type from %d to %d\n", |
| 1396 | bond_dev->type, slave_dev->type); |
Moni Shoua | 75c7850 | 2009-09-15 02:37:40 -0700 | [diff] [blame] | 1397 | |
Amerigo Wang | b7bc2a5 | 2012-08-09 22:14:57 +0000 | [diff] [blame] | 1398 | res = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, |
| 1399 | bond_dev); |
Jiri Pirko | 3ca5b40 | 2010-03-10 10:29:35 +0000 | [diff] [blame] | 1400 | res = notifier_to_errno(res); |
| 1401 | if (res) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1402 | netdev_err(bond_dev, "refused to change device type\n"); |
Zhang Shengju | 1e2a886 | 2016-02-09 10:37:46 +0000 | [diff] [blame] | 1403 | return -EBUSY; |
Jiri Pirko | 3ca5b40 | 2010-03-10 10:29:35 +0000 | [diff] [blame] | 1404 | } |
Moni Shoua | 75c7850 | 2009-09-15 02:37:40 -0700 | [diff] [blame] | 1405 | |
Jiri Pirko | 32a806c | 2010-03-19 04:00:23 +0000 | [diff] [blame] | 1406 | /* Flush unicast and multicast addresses */ |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 1407 | dev_uc_flush(bond_dev); |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1408 | dev_mc_flush(bond_dev); |
Jiri Pirko | 32a806c | 2010-03-19 04:00:23 +0000 | [diff] [blame] | 1409 | |
Moni Shoua | e36b9d1 | 2009-07-15 04:56:31 +0000 | [diff] [blame] | 1410 | if (slave_dev->type != ARPHRD_ETHER) |
| 1411 | bond_setup_by_slave(bond_dev, slave_dev); |
Neil Horman | 550fd08 | 2011-07-26 06:05:38 +0000 | [diff] [blame] | 1412 | else { |
Moni Shoua | e36b9d1 | 2009-07-15 04:56:31 +0000 | [diff] [blame] | 1413 | ether_setup(bond_dev); |
Neil Horman | 550fd08 | 2011-07-26 06:05:38 +0000 | [diff] [blame] | 1414 | bond_dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
| 1415 | } |
Moni Shoua | 75c7850 | 2009-09-15 02:37:40 -0700 | [diff] [blame] | 1416 | |
Amerigo Wang | b7bc2a5 | 2012-08-09 22:14:57 +0000 | [diff] [blame] | 1417 | call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, |
| 1418 | bond_dev); |
Moni Shoua | e36b9d1 | 2009-07-15 04:56:31 +0000 | [diff] [blame] | 1419 | } |
Moni Shoua | 872254d | 2007-10-09 19:43:38 -0700 | [diff] [blame] | 1420 | } else if (bond_dev->type != slave_dev->type) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1421 | netdev_err(bond_dev, "%s ether type (%d) is different from other slaves (%d), can not enslave it\n", |
| 1422 | slave_dev->name, slave_dev->type, bond_dev->type); |
Zhang Shengju | 1e2a886 | 2016-02-09 10:37:46 +0000 | [diff] [blame] | 1423 | return -EINVAL; |
Moni Shoua | 872254d | 2007-10-09 19:43:38 -0700 | [diff] [blame] | 1424 | } |
| 1425 | |
Mark Bloch | 1533e77 | 2016-07-21 11:52:55 +0300 | [diff] [blame] | 1426 | if (slave_dev->type == ARPHRD_INFINIBAND && |
| 1427 | BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) { |
| 1428 | netdev_warn(bond_dev, "Type (%d) supports only active-backup mode\n", |
| 1429 | slave_dev->type); |
| 1430 | res = -EOPNOTSUPP; |
| 1431 | goto err_undo_flags; |
| 1432 | } |
| 1433 | |
| 1434 | if (!slave_ops->ndo_set_mac_address || |
| 1435 | slave_dev->type == ARPHRD_INFINIBAND) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1436 | netdev_warn(bond_dev, "The slave device specified does not support setting the MAC address\n"); |
Veaceslav Falico | f544244 | 2014-07-15 13:26:01 +0200 | [diff] [blame] | 1437 | if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP && |
| 1438 | bond->params.fail_over_mac != BOND_FOM_ACTIVE) { |
| 1439 | if (!bond_has_slaves(bond)) { |
dingtianhong | 00503b6 | 2014-01-25 13:00:29 +0800 | [diff] [blame] | 1440 | bond->params.fail_over_mac = BOND_FOM_ACTIVE; |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1441 | netdev_warn(bond_dev, "Setting fail_over_mac to active for active-backup mode\n"); |
Veaceslav Falico | f544244 | 2014-07-15 13:26:01 +0200 | [diff] [blame] | 1442 | } else { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1443 | netdev_err(bond_dev, "The slave device specified does not support setting the MAC address, but fail_over_mac is not set to active\n"); |
Veaceslav Falico | f544244 | 2014-07-15 13:26:01 +0200 | [diff] [blame] | 1444 | res = -EOPNOTSUPP; |
| 1445 | goto err_undo_flags; |
dingtianhong | 00503b6 | 2014-01-25 13:00:29 +0800 | [diff] [blame] | 1446 | } |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1447 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | } |
| 1449 | |
Amerigo Wang | 8d8fc29 | 2011-05-19 21:39:10 +0000 | [diff] [blame] | 1450 | call_netdevice_notifiers(NETDEV_JOIN, slave_dev); |
| 1451 | |
Jiri Pirko | c20811a | 2010-05-19 01:14:29 +0000 | [diff] [blame] | 1452 | /* If this is the first slave, then we need to set the master's hardware |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1453 | * address to be the same as the slave's. |
| 1454 | */ |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 1455 | if (!bond_has_slaves(bond) && |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 1456 | bond->dev->addr_assign_type == NET_ADDR_RANDOM) |
Jiri Pirko | 409cc1f | 2013-01-30 11:08:11 +0100 | [diff] [blame] | 1457 | bond_set_dev_addr(bond->dev, slave_dev); |
Jiri Pirko | c20811a | 2010-05-19 01:14:29 +0000 | [diff] [blame] | 1458 | |
dingtianhong | 3fdddd8 | 2014-05-12 15:08:43 +0800 | [diff] [blame] | 1459 | new_slave = bond_alloc_slave(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | if (!new_slave) { |
| 1461 | res = -ENOMEM; |
| 1462 | goto err_undo_flags; |
| 1463 | } |
dingtianhong | 3fdddd8 | 2014-05-12 15:08:43 +0800 | [diff] [blame] | 1464 | |
Veaceslav Falico | dc73c41 | 2014-05-21 17:42:00 +0200 | [diff] [blame] | 1465 | new_slave->bond = bond; |
| 1466 | new_slave->dev = slave_dev; |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1467 | /* Set the new_slave's queue_id to be zero. Queue ID mapping |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 1468 | * is set via sysfs or module option if desired. |
| 1469 | */ |
| 1470 | new_slave->queue_id = 0; |
| 1471 | |
Jiri Pirko | b15ba0f | 2010-05-18 05:42:40 +0000 | [diff] [blame] | 1472 | /* Save slave's original mtu and then set it to match the bond */ |
| 1473 | new_slave->original_mtu = slave_dev->mtu; |
| 1474 | res = dev_set_mtu(slave_dev, bond->dev->mtu); |
| 1475 | if (res) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1476 | netdev_dbg(bond_dev, "Error %d calling dev_set_mtu\n", res); |
Jiri Pirko | b15ba0f | 2010-05-18 05:42:40 +0000 | [diff] [blame] | 1477 | goto err_free; |
| 1478 | } |
| 1479 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1480 | /* Save slave's original ("permanent") mac address for modes |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 1481 | * that need it, and for restoring it upon release, and then |
| 1482 | * set it to the master's address |
| 1483 | */ |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 1484 | ether_addr_copy(new_slave->perm_hwaddr, slave_dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | |
dingtianhong | 00503b6 | 2014-01-25 13:00:29 +0800 | [diff] [blame] | 1486 | if (!bond->params.fail_over_mac || |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 1487 | BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) { |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1488 | /* Set slave to master's mac address. The application already |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1489 | * set the master's mac address to that of the first slave |
| 1490 | */ |
| 1491 | memcpy(addr.sa_data, bond_dev->dev_addr, bond_dev->addr_len); |
| 1492 | addr.sa_family = slave_dev->type; |
| 1493 | res = dev_set_mac_address(slave_dev, &addr); |
| 1494 | if (res) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1495 | netdev_dbg(bond_dev, "Error %d calling set_mac_address\n", res); |
Jiri Pirko | b15ba0f | 2010-05-18 05:42:40 +0000 | [diff] [blame] | 1496 | goto err_restore_mtu; |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1497 | } |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 1498 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | |
Karl Heiss | 03d84a5 | 2016-01-11 08:28:43 -0500 | [diff] [blame] | 1500 | /* set slave flag before open to prevent IPv6 addrconf */ |
| 1501 | slave_dev->flags |= IFF_SLAVE; |
| 1502 | |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 1503 | /* open the slave since the application closed it */ |
| 1504 | res = dev_open(slave_dev); |
| 1505 | if (res) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1506 | netdev_dbg(bond_dev, "Opening slave %s failed\n", slave_dev->name); |
Veaceslav Falico | 1f718f0 | 2013-09-25 09:20:10 +0200 | [diff] [blame] | 1507 | goto err_restore_mac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | } |
| 1509 | |
Jay Vosburgh | 0b680e7 | 2006-09-22 21:54:10 -0700 | [diff] [blame] | 1510 | slave_dev->priv_flags |= IFF_BONDING; |
Andy Gospodarek | 5f0c5f7 | 2014-09-28 22:34:37 -0400 | [diff] [blame] | 1511 | /* initialize slave stats */ |
| 1512 | dev_get_stats(new_slave->dev, &new_slave->slave_stats); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1513 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 1514 | if (bond_is_lb(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | /* bond_alb_init_slave() must be called before all other stages since |
| 1516 | * it might fail and we do not want to have to undo everything |
| 1517 | */ |
| 1518 | res = bond_alb_init_slave(bond, new_slave); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1519 | if (res) |
Jay Vosburgh | 569f0c4 | 2008-05-02 18:06:02 -0700 | [diff] [blame] | 1520 | goto err_close; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | } |
| 1522 | |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 1523 | /* If the mode uses primary, then the following is handled by |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 1524 | * bond_change_active_slave(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1525 | */ |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 1526 | if (!bond_uses_primary(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | /* set promiscuity level to new slave */ |
| 1528 | if (bond_dev->flags & IFF_PROMISC) { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 1529 | res = dev_set_promiscuity(slave_dev, 1); |
| 1530 | if (res) |
| 1531 | goto err_close; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | } |
| 1533 | |
| 1534 | /* set allmulti level to new slave */ |
| 1535 | if (bond_dev->flags & IFF_ALLMULTI) { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 1536 | res = dev_set_allmulti(slave_dev, 1); |
| 1537 | if (res) |
| 1538 | goto err_close; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | } |
| 1540 | |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 1541 | netif_addr_lock_bh(bond_dev); |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 1542 | |
| 1543 | dev_mc_sync_multiple(slave_dev, bond_dev); |
| 1544 | dev_uc_sync_multiple(slave_dev, bond_dev); |
| 1545 | |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 1546 | netif_addr_unlock_bh(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | } |
| 1548 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 1549 | if (BOND_MODE(bond) == BOND_MODE_8023AD) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1550 | /* add lacpdu mc addr to mc list */ |
| 1551 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; |
| 1552 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1553 | dev_mc_add(slave_dev, lacpdu_multicast); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1554 | } |
| 1555 | |
Wei Yongjun | b8e2fde | 2013-08-23 10:45:07 +0800 | [diff] [blame] | 1556 | res = vlan_vids_add_by_dev(slave_dev, bond_dev); |
| 1557 | if (res) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1558 | netdev_err(bond_dev, "Couldn't add bond vlan ids to %s\n", |
| 1559 | slave_dev->name); |
nikolay@redhat.com | 1ff412a | 2013-08-06 12:40:15 +0200 | [diff] [blame] | 1560 | goto err_close; |
| 1561 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | |
Veaceslav Falico | c8c2390 | 2013-09-25 09:20:25 +0200 | [diff] [blame] | 1563 | prev_slave = bond_last_slave(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | |
| 1565 | new_slave->delay = 0; |
| 1566 | new_slave->link_failure_count = 0; |
| 1567 | |
Veaceslav Falico | 876254a | 2013-03-12 06:31:32 +0000 | [diff] [blame] | 1568 | bond_update_speed_duplex(new_slave); |
| 1569 | |
Veaceslav Falico | 49f17de | 2014-02-18 07:48:47 +0100 | [diff] [blame] | 1570 | new_slave->last_rx = jiffies - |
Michal Kubeček | f31c793 | 2012-04-17 02:02:06 +0000 | [diff] [blame] | 1571 | (msecs_to_jiffies(bond->params.arp_interval) + 1); |
Veaceslav Falico | 8599b52 | 2013-06-24 11:49:34 +0200 | [diff] [blame] | 1572 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) |
Veaceslav Falico | 49f17de | 2014-02-18 07:48:47 +0100 | [diff] [blame] | 1573 | new_slave->target_last_arp_rx[i] = new_slave->last_rx; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 1574 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | if (bond->params.miimon && !bond->params.use_carrier) { |
| 1576 | link_reporting = bond_check_dev_link(bond, slave_dev, 1); |
| 1577 | |
| 1578 | if ((link_reporting == -1) && !bond->params.arp_interval) { |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1579 | /* miimon is set but a bonded network driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | * does not support ETHTOOL/MII and |
| 1581 | * arp_interval is not set. Note: if |
| 1582 | * use_carrier is enabled, we will never go |
| 1583 | * here (because netif_carrier is always |
| 1584 | * supported); thus, we don't need to change |
| 1585 | * the messages for netif_carrier. |
| 1586 | */ |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1587 | netdev_warn(bond_dev, "MII and ETHTOOL support not available for interface %s, and arp_interval/arp_ip_target module parameters not specified, thus bonding will not detect link failures! see bonding.txt for details\n", |
| 1588 | slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | } else if (link_reporting == -1) { |
| 1590 | /* unable get link status using mii/ethtool */ |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1591 | netdev_warn(bond_dev, "can't get link status from interface %s; the network driver associated with this interface does not support MII or ETHTOOL link status reporting, thus miimon has no effect on this interface\n", |
| 1592 | slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | } |
| 1594 | } |
| 1595 | |
| 1596 | /* check for initial state */ |
Aviv Heller | a30b016 | 2016-07-05 12:09:47 +0300 | [diff] [blame] | 1597 | new_slave->link = BOND_LINK_NOCHANGE; |
Michal Kubeček | f31c793 | 2012-04-17 02:02:06 +0000 | [diff] [blame] | 1598 | if (bond->params.miimon) { |
| 1599 | if (bond_check_dev_link(bond, slave_dev, 0) == BMSR_LSTATUS) { |
| 1600 | if (bond->params.updelay) { |
Moni Shoua | 69a2338 | 2015-02-03 16:48:30 +0200 | [diff] [blame] | 1601 | bond_set_slave_link_state(new_slave, |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 1602 | BOND_LINK_BACK, |
| 1603 | BOND_SLAVE_NOTIFY_NOW); |
Michal Kubeček | f31c793 | 2012-04-17 02:02:06 +0000 | [diff] [blame] | 1604 | new_slave->delay = bond->params.updelay; |
| 1605 | } else { |
Moni Shoua | 69a2338 | 2015-02-03 16:48:30 +0200 | [diff] [blame] | 1606 | bond_set_slave_link_state(new_slave, |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 1607 | BOND_LINK_UP, |
| 1608 | BOND_SLAVE_NOTIFY_NOW); |
Michal Kubeček | f31c793 | 2012-04-17 02:02:06 +0000 | [diff] [blame] | 1609 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1610 | } else { |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 1611 | bond_set_slave_link_state(new_slave, BOND_LINK_DOWN, |
| 1612 | BOND_SLAVE_NOTIFY_NOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1613 | } |
Michal Kubeček | f31c793 | 2012-04-17 02:02:06 +0000 | [diff] [blame] | 1614 | } else if (bond->params.arp_interval) { |
Moni Shoua | 69a2338 | 2015-02-03 16:48:30 +0200 | [diff] [blame] | 1615 | bond_set_slave_link_state(new_slave, |
| 1616 | (netif_carrier_ok(slave_dev) ? |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 1617 | BOND_LINK_UP : BOND_LINK_DOWN), |
| 1618 | BOND_SLAVE_NOTIFY_NOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1619 | } else { |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 1620 | bond_set_slave_link_state(new_slave, BOND_LINK_UP, |
| 1621 | BOND_SLAVE_NOTIFY_NOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1622 | } |
| 1623 | |
Michal Kubeček | f31c793 | 2012-04-17 02:02:06 +0000 | [diff] [blame] | 1624 | if (new_slave->link != BOND_LINK_DOWN) |
Veaceslav Falico | 8e60346 | 2014-02-18 07:48:46 +0100 | [diff] [blame] | 1625 | new_slave->last_link_up = jiffies; |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1626 | netdev_dbg(bond_dev, "Initial state of slave_dev is BOND_LINK_%s\n", |
| 1627 | new_slave->link == BOND_LINK_DOWN ? "DOWN" : |
| 1628 | (new_slave->link == BOND_LINK_UP ? "UP" : "BACK")); |
Michal Kubeček | f31c793 | 2012-04-17 02:02:06 +0000 | [diff] [blame] | 1629 | |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 1630 | if (bond_uses_primary(bond) && bond->params.primary[0]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | /* if there is a primary slave, remember it */ |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 1632 | if (strcmp(bond->params.primary, new_slave->dev->name) == 0) { |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 1633 | rcu_assign_pointer(bond->primary_slave, new_slave); |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 1634 | bond->force_primary = true; |
| 1635 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | } |
| 1637 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 1638 | switch (BOND_MODE(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1639 | case BOND_MODE_ACTIVEBACKUP: |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 1640 | bond_set_slave_inactive_flags(new_slave, |
| 1641 | BOND_SLAVE_NOTIFY_NOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | break; |
| 1643 | case BOND_MODE_8023AD: |
| 1644 | /* in 802.3ad mode, the internal mechanism |
| 1645 | * will activate the slaves in the selected |
| 1646 | * aggregator |
| 1647 | */ |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 1648 | bond_set_slave_inactive_flags(new_slave, BOND_SLAVE_NOTIFY_NOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | /* if this is the first slave */ |
Veaceslav Falico | 23c147e | 2013-09-27 15:10:57 +0200 | [diff] [blame] | 1650 | if (!prev_slave) { |
dingtianhong | 3fdddd8 | 2014-05-12 15:08:43 +0800 | [diff] [blame] | 1651 | SLAVE_AD_INFO(new_slave)->id = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | /* Initialize AD with the number of times that the AD timer is called in 1 second |
| 1653 | * can be called only after the mac address of the bond is set |
| 1654 | */ |
Peter Pan(潘卫平) | 56d00c67 | 2011-06-08 21:19:02 +0000 | [diff] [blame] | 1655 | bond_3ad_initialize(bond, 1000/AD_TIMER_INTERVAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1656 | } else { |
dingtianhong | 3fdddd8 | 2014-05-12 15:08:43 +0800 | [diff] [blame] | 1657 | SLAVE_AD_INFO(new_slave)->id = |
| 1658 | SLAVE_AD_INFO(prev_slave)->id + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1659 | } |
| 1660 | |
| 1661 | bond_3ad_bind_slave(new_slave); |
| 1662 | break; |
| 1663 | case BOND_MODE_TLB: |
| 1664 | case BOND_MODE_ALB: |
Jiri Pirko | e30bc06 | 2011-03-12 03:14:37 +0000 | [diff] [blame] | 1665 | bond_set_active_slave(new_slave); |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 1666 | bond_set_slave_inactive_flags(new_slave, BOND_SLAVE_NOTIFY_NOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | break; |
| 1668 | default: |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1669 | netdev_dbg(bond_dev, "This slave is always active in trunk mode\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1670 | |
| 1671 | /* always active in trunk mode */ |
Jiri Pirko | e30bc06 | 2011-03-12 03:14:37 +0000 | [diff] [blame] | 1672 | bond_set_active_slave(new_slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | |
| 1674 | /* In trunking mode there is little meaning to curr_active_slave |
| 1675 | * anyway (it holds no special properties of the bond device), |
| 1676 | * so we can change it without calling change_active_interface() |
| 1677 | */ |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1678 | if (!rcu_access_pointer(bond->curr_active_slave) && |
| 1679 | new_slave->link == BOND_LINK_UP) |
nikolay@redhat.com | 278b208 | 2013-08-01 16:54:51 +0200 | [diff] [blame] | 1680 | rcu_assign_pointer(bond->curr_active_slave, new_slave); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1681 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | break; |
| 1683 | } /* switch(bond_mode) */ |
| 1684 | |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 1685 | #ifdef CONFIG_NET_POLL_CONTROLLER |
stephen hemminger | 10eccb4 | 2013-07-24 11:53:57 -0700 | [diff] [blame] | 1686 | slave_dev->npinfo = bond->dev->npinfo; |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1687 | if (slave_dev->npinfo) { |
| 1688 | if (slave_enable_netpoll(new_slave)) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1689 | netdev_info(bond_dev, "master_dev is using netpoll, but new slave device does not support netpoll\n"); |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1690 | res = -EBUSY; |
stephen hemminger | f7d9821 | 2011-12-31 13:26:46 +0000 | [diff] [blame] | 1691 | goto err_detach; |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1692 | } |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 1693 | } |
| 1694 | #endif |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1695 | |
Michal Kubeček | fbe168b | 2014-11-13 07:54:50 +0100 | [diff] [blame] | 1696 | if (!(bond_dev->features & NETIF_F_LRO)) |
| 1697 | dev_disable_lro(slave_dev); |
| 1698 | |
Jiri Pirko | 35d4890 | 2011-03-22 02:38:12 +0000 | [diff] [blame] | 1699 | res = netdev_rx_handler_register(slave_dev, bond_handle_frame, |
| 1700 | new_slave); |
| 1701 | if (res) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1702 | netdev_dbg(bond_dev, "Error %d calling netdev_rx_handler_register\n", res); |
Veaceslav Falico | 5831d66e | 2013-09-25 09:20:32 +0200 | [diff] [blame] | 1703 | goto err_detach; |
Jiri Pirko | 35d4890 | 2011-03-22 02:38:12 +0000 | [diff] [blame] | 1704 | } |
| 1705 | |
Jiri Pirko | 41f0b04 | 2015-12-03 12:12:14 +0100 | [diff] [blame] | 1706 | res = bond_master_upper_dev_link(bond, new_slave); |
Veaceslav Falico | 1f718f0 | 2013-09-25 09:20:10 +0200 | [diff] [blame] | 1707 | if (res) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1708 | netdev_dbg(bond_dev, "Error %d calling bond_master_upper_dev_link\n", res); |
Veaceslav Falico | 1f718f0 | 2013-09-25 09:20:10 +0200 | [diff] [blame] | 1709 | goto err_unregister; |
| 1710 | } |
| 1711 | |
sfeldma@cumulusnetworks.com | 07699f9 | 2014-01-16 22:57:49 -0800 | [diff] [blame] | 1712 | res = bond_sysfs_slave_add(new_slave); |
| 1713 | if (res) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1714 | netdev_dbg(bond_dev, "Error %d calling bond_sysfs_slave_add\n", res); |
sfeldma@cumulusnetworks.com | 07699f9 | 2014-01-16 22:57:49 -0800 | [diff] [blame] | 1715 | goto err_upper_unlink; |
| 1716 | } |
| 1717 | |
Veaceslav Falico | 5378c2e | 2013-10-21 11:48:30 +0200 | [diff] [blame] | 1718 | bond->slave_cnt++; |
| 1719 | bond_compute_features(bond); |
| 1720 | bond_set_carrier(bond); |
| 1721 | |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 1722 | if (bond_uses_primary(bond)) { |
dingtianhong | f80889a | 2014-02-12 12:06:40 +0800 | [diff] [blame] | 1723 | block_netpoll_tx(); |
Veaceslav Falico | 5378c2e | 2013-10-21 11:48:30 +0200 | [diff] [blame] | 1724 | bond_select_active_slave(bond); |
dingtianhong | f80889a | 2014-02-12 12:06:40 +0800 | [diff] [blame] | 1725 | unblock_netpoll_tx(); |
Veaceslav Falico | 5378c2e | 2013-10-21 11:48:30 +0200 | [diff] [blame] | 1726 | } |
Veaceslav Falico | 1f718f0 | 2013-09-25 09:20:10 +0200 | [diff] [blame] | 1727 | |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 1728 | if (bond_mode_uses_xmit_hash(bond)) |
| 1729 | bond_update_slave_arr(bond, NULL); |
| 1730 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1731 | netdev_info(bond_dev, "Enslaving %s as %s interface with %s link\n", |
| 1732 | slave_dev->name, |
| 1733 | bond_is_active_slave(new_slave) ? "an active" : "a backup", |
| 1734 | new_slave->link != BOND_LINK_DOWN ? "an up" : "a down"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | |
| 1736 | /* enslave is successful */ |
Moni Shoua | 69e6113 | 2015-02-03 16:48:31 +0200 | [diff] [blame] | 1737 | bond_queue_slave_event(new_slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | return 0; |
| 1739 | |
| 1740 | /* Undo stages on error */ |
sfeldma@cumulusnetworks.com | 07699f9 | 2014-01-16 22:57:49 -0800 | [diff] [blame] | 1741 | err_upper_unlink: |
Jiri Pirko | 41f0b04 | 2015-12-03 12:12:14 +0100 | [diff] [blame] | 1742 | bond_upper_dev_unlink(bond, new_slave); |
sfeldma@cumulusnetworks.com | 07699f9 | 2014-01-16 22:57:49 -0800 | [diff] [blame] | 1743 | |
Veaceslav Falico | 1f718f0 | 2013-09-25 09:20:10 +0200 | [diff] [blame] | 1744 | err_unregister: |
| 1745 | netdev_rx_handler_unregister(slave_dev); |
| 1746 | |
stephen hemminger | f7d9821 | 2011-12-31 13:26:46 +0000 | [diff] [blame] | 1747 | err_detach: |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 1748 | if (!bond_uses_primary(bond)) |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 1749 | bond_hw_addr_flush(bond_dev, slave_dev); |
| 1750 | |
nikolay@redhat.com | 1ff412a | 2013-08-06 12:40:15 +0200 | [diff] [blame] | 1751 | vlan_vids_del_by_dev(slave_dev, bond_dev); |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 1752 | if (rcu_access_pointer(bond->primary_slave) == new_slave) |
| 1753 | RCU_INIT_POINTER(bond->primary_slave, NULL); |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1754 | if (rcu_access_pointer(bond->curr_active_slave) == new_slave) { |
dingtianhong | f80889a | 2014-02-12 12:06:40 +0800 | [diff] [blame] | 1755 | block_netpoll_tx(); |
dingtianhong | c851703 | 2013-12-13 10:20:07 +0800 | [diff] [blame] | 1756 | bond_change_active_slave(bond, NULL); |
nikolay@redhat.com | 3c5913b53 | 2013-04-18 07:33:36 +0000 | [diff] [blame] | 1757 | bond_select_active_slave(bond); |
dingtianhong | f80889a | 2014-02-12 12:06:40 +0800 | [diff] [blame] | 1758 | unblock_netpoll_tx(); |
nikolay@redhat.com | 3c5913b53 | 2013-04-18 07:33:36 +0000 | [diff] [blame] | 1759 | } |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 1760 | /* either primary_slave or curr_active_slave might've changed */ |
| 1761 | synchronize_rcu(); |
nikolay@redhat.com | fc7a72a | 2013-04-18 07:33:37 +0000 | [diff] [blame] | 1762 | slave_disable_netpoll(new_slave); |
stephen hemminger | f7d9821 | 2011-12-31 13:26:46 +0000 | [diff] [blame] | 1763 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | err_close: |
nikolay@redhat.com | b6a5a7b | 2013-04-11 09:18:56 +0000 | [diff] [blame] | 1765 | slave_dev->priv_flags &= ~IFF_BONDING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | dev_close(slave_dev); |
| 1767 | |
| 1768 | err_restore_mac: |
Karl Heiss | 03d84a5 | 2016-01-11 08:28:43 -0500 | [diff] [blame] | 1769 | slave_dev->flags &= ~IFF_SLAVE; |
dingtianhong | 00503b6 | 2014-01-25 13:00:29 +0800 | [diff] [blame] | 1770 | if (!bond->params.fail_over_mac || |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 1771 | BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) { |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1772 | /* XXX TODO - fom follow mode needs to change master's |
| 1773 | * MAC if this slave's MAC is in use by the bond, or at |
| 1774 | * least print a warning. |
| 1775 | */ |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 1776 | ether_addr_copy(addr.sa_data, new_slave->perm_hwaddr); |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1777 | addr.sa_family = slave_dev->type; |
| 1778 | dev_set_mac_address(slave_dev, &addr); |
| 1779 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | |
Jiri Pirko | b15ba0f | 2010-05-18 05:42:40 +0000 | [diff] [blame] | 1781 | err_restore_mtu: |
| 1782 | dev_set_mtu(slave_dev, new_slave->original_mtu); |
| 1783 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1784 | err_free: |
dingtianhong | 3fdddd8 | 2014-05-12 15:08:43 +0800 | [diff] [blame] | 1785 | bond_free_slave(new_slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1786 | |
| 1787 | err_undo_flags: |
Nikolay Aleksandrov | b8fad45 | 2013-06-12 00:07:01 +0200 | [diff] [blame] | 1788 | /* Enslave of first slave has failed and we need to fix master's mac */ |
Nikolay Aleksandrov | 7d5cd2c | 2015-07-15 22:57:01 +0200 | [diff] [blame] | 1789 | if (!bond_has_slaves(bond)) { |
| 1790 | if (ether_addr_equal_64bits(bond_dev->dev_addr, |
| 1791 | slave_dev->dev_addr)) |
| 1792 | eth_hw_addr_random(bond_dev); |
| 1793 | if (bond_dev->type != ARPHRD_ETHER) { |
Jay Vosburgh | 40baec2 | 2015-11-06 17:23:23 -0800 | [diff] [blame] | 1794 | dev_close(bond_dev); |
Nikolay Aleksandrov | 7d5cd2c | 2015-07-15 22:57:01 +0200 | [diff] [blame] | 1795 | ether_setup(bond_dev); |
| 1796 | bond_dev->flags |= IFF_MASTER; |
| 1797 | bond_dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
| 1798 | } |
| 1799 | } |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1800 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1801 | return res; |
| 1802 | } |
| 1803 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1804 | /* Try to release the slave device <slave> from the bond device <master> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | * It is legal to access curr_active_slave without a lock because all the function |
Nikolay Aleksandrov | 8c0bc55 | 2014-09-11 22:49:28 +0200 | [diff] [blame] | 1806 | * is RTNL-locked. If "all" is true it means that the function is being called |
nikolay@redhat.com | 0896341 | 2013-02-18 14:09:42 +0000 | [diff] [blame] | 1807 | * while destroying a bond interface and all slaves are being released. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | * |
| 1809 | * The rules for slave state should be: |
| 1810 | * for Active/Backup: |
| 1811 | * Active stays on all backups go down |
| 1812 | * for Bonded connections: |
| 1813 | * The first up interface should be left on and all others downed. |
| 1814 | */ |
nikolay@redhat.com | 0896341 | 2013-02-18 14:09:42 +0000 | [diff] [blame] | 1815 | static int __bond_release_one(struct net_device *bond_dev, |
| 1816 | struct net_device *slave_dev, |
| 1817 | bool all) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1818 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 1819 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1820 | struct slave *slave, *oldcurrent; |
| 1821 | struct sockaddr addr; |
Neil Horman | 5a0068d | 2013-09-27 12:22:15 -0400 | [diff] [blame] | 1822 | int old_flags = bond_dev->flags; |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1823 | netdev_features_t old_features = bond_dev->features; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | |
| 1825 | /* slave is not a slave or master is not master of this slave */ |
| 1826 | if (!(slave_dev->flags & IFF_SLAVE) || |
Jiri Pirko | 471cb5a | 2013-01-03 22:49:01 +0000 | [diff] [blame] | 1827 | !netdev_has_upper_dev(slave_dev, bond_dev)) { |
Wengang Wang | a22a9e4 | 2014-12-23 09:24:36 +0800 | [diff] [blame] | 1828 | netdev_dbg(bond_dev, "cannot release %s\n", |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1829 | slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1830 | return -EINVAL; |
| 1831 | } |
| 1832 | |
Neil Horman | e843fa5 | 2010-10-13 16:01:50 +0000 | [diff] [blame] | 1833 | block_netpoll_tx(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1834 | |
| 1835 | slave = bond_get_slave_by_dev(bond, slave_dev); |
| 1836 | if (!slave) { |
| 1837 | /* not a slave of this bond */ |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1838 | netdev_info(bond_dev, "%s not enslaved\n", |
| 1839 | slave_dev->name); |
Neil Horman | e843fa5 | 2010-10-13 16:01:50 +0000 | [diff] [blame] | 1840 | unblock_netpoll_tx(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1841 | return -EINVAL; |
| 1842 | } |
| 1843 | |
Jiri Pirko | 57beaca | 2015-12-03 12:12:21 +0100 | [diff] [blame] | 1844 | bond_set_slave_inactive_flags(slave, BOND_SLAVE_NOTIFY_NOW); |
| 1845 | |
sfeldma@cumulusnetworks.com | 07699f9 | 2014-01-16 22:57:49 -0800 | [diff] [blame] | 1846 | bond_sysfs_slave_del(slave); |
| 1847 | |
Andy Gospodarek | 5f0c5f7 | 2014-09-28 22:34:37 -0400 | [diff] [blame] | 1848 | /* recompute stats just before removing the slave */ |
| 1849 | bond_get_stats(bond->dev, &bond->bond_stats); |
| 1850 | |
Jiri Pirko | 41f0b04 | 2015-12-03 12:12:14 +0100 | [diff] [blame] | 1851 | bond_upper_dev_unlink(bond, slave); |
Jiri Pirko | 35d4890 | 2011-03-22 02:38:12 +0000 | [diff] [blame] | 1852 | /* unregister rx_handler early so bond_handle_frame wouldn't be called |
| 1853 | * for this slave anymore. |
| 1854 | */ |
| 1855 | netdev_rx_handler_unregister(slave_dev); |
Jiri Pirko | 35d4890 | 2011-03-22 02:38:12 +0000 | [diff] [blame] | 1856 | |
Nikolay Aleksandrov | e470259 | 2014-09-11 22:49:27 +0200 | [diff] [blame] | 1857 | if (BOND_MODE(bond) == BOND_MODE_8023AD) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | bond_3ad_unbind_slave(slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1859 | |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 1860 | if (bond_mode_uses_xmit_hash(bond)) |
| 1861 | bond_update_slave_arr(bond, slave); |
| 1862 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1863 | netdev_info(bond_dev, "Releasing %s interface %s\n", |
| 1864 | bond_is_active_slave(slave) ? "active" : "backup", |
| 1865 | slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1866 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 1867 | oldcurrent = rcu_access_pointer(bond->curr_active_slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1868 | |
Eric Dumazet | 85741718 | 2014-07-15 06:56:56 -0700 | [diff] [blame] | 1869 | RCU_INIT_POINTER(bond->current_arp_slave, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1870 | |
dingtianhong | 00503b6 | 2014-01-25 13:00:29 +0800 | [diff] [blame] | 1871 | if (!all && (!bond->params.fail_over_mac || |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 1872 | BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP)) { |
dingtianhong | 844223a | 2014-01-02 09:13:16 +0800 | [diff] [blame] | 1873 | if (ether_addr_equal_64bits(bond_dev->dev_addr, slave->perm_hwaddr) && |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 1874 | bond_has_slaves(bond)) |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1875 | netdev_warn(bond_dev, "the permanent HWaddr of %s - %pM - is still in use by %s - set the HWaddr of %s to a different address to avoid conflicts\n", |
| 1876 | slave_dev->name, slave->perm_hwaddr, |
| 1877 | bond_dev->name, slave_dev->name); |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 1878 | } |
| 1879 | |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 1880 | if (rtnl_dereference(bond->primary_slave) == slave) |
| 1881 | RCU_INIT_POINTER(bond->primary_slave, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1882 | |
Nikolay Aleksandrov | 1c72cfdc9 | 2014-09-11 22:49:24 +0200 | [diff] [blame] | 1883 | if (oldcurrent == slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | bond_change_active_slave(bond, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1885 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 1886 | if (bond_is_lb(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | /* Must be called only after the slave has been |
| 1888 | * detached from the list and the curr_active_slave |
| 1889 | * has been cleared (if our_slave == old_current), |
| 1890 | * but before a new active slave is selected. |
| 1891 | */ |
| 1892 | bond_alb_deinit_slave(bond, slave); |
| 1893 | } |
| 1894 | |
nikolay@redhat.com | 0896341 | 2013-02-18 14:09:42 +0000 | [diff] [blame] | 1895 | if (all) { |
Paul E. McKenney | 36708b8 | 2013-12-09 15:19:53 -0800 | [diff] [blame] | 1896 | RCU_INIT_POINTER(bond->curr_active_slave, NULL); |
nikolay@redhat.com | 0896341 | 2013-02-18 14:09:42 +0000 | [diff] [blame] | 1897 | } else if (oldcurrent == slave) { |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1898 | /* Note that we hold RTNL over this sequence, so there |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1899 | * is no concern that another slave add/remove event |
| 1900 | * will interfere. |
| 1901 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1902 | bond_select_active_slave(bond); |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1903 | } |
| 1904 | |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 1905 | if (!bond_has_slaves(bond)) { |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 1906 | bond_set_carrier(bond); |
Jiri Pirko | 409cc1f | 2013-01-30 11:08:11 +0100 | [diff] [blame] | 1907 | eth_hw_addr_random(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1908 | } |
| 1909 | |
Neil Horman | e843fa5 | 2010-10-13 16:01:50 +0000 | [diff] [blame] | 1910 | unblock_netpoll_tx(); |
nikolay@redhat.com | 278b208 | 2013-08-01 16:54:51 +0200 | [diff] [blame] | 1911 | synchronize_rcu(); |
Nikolay Aleksandrov | ee6154e | 2014-02-26 14:20:30 +0100 | [diff] [blame] | 1912 | bond->slave_cnt--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1913 | |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 1914 | if (!bond_has_slaves(bond)) { |
Shlomo Pongratz | 2af73d4 | 2012-04-03 22:56:19 +0000 | [diff] [blame] | 1915 | call_netdevice_notifiers(NETDEV_CHANGEADDR, bond->dev); |
Veaceslav Falico | 80028ea | 2013-03-06 07:10:32 +0000 | [diff] [blame] | 1916 | call_netdevice_notifiers(NETDEV_RELEASE, bond->dev); |
| 1917 | } |
Shlomo Pongratz | 2af73d4 | 2012-04-03 22:56:19 +0000 | [diff] [blame] | 1918 | |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1919 | bond_compute_features(bond); |
| 1920 | if (!(bond_dev->features & NETIF_F_VLAN_CHALLENGED) && |
| 1921 | (old_features & NETIF_F_VLAN_CHALLENGED)) |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1922 | netdev_info(bond_dev, "last VLAN challenged slave %s left bond %s - VLAN blocking is removed\n", |
| 1923 | slave_dev->name, bond_dev->name); |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 1924 | |
nikolay@redhat.com | 1ff412a | 2013-08-06 12:40:15 +0200 | [diff] [blame] | 1925 | vlan_vids_del_by_dev(slave_dev, bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1926 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1927 | /* If the mode uses primary, then this case was handled above by |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 1928 | * bond_change_active_slave(..., NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1929 | */ |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 1930 | if (!bond_uses_primary(bond)) { |
Neil Horman | 5a0068d | 2013-09-27 12:22:15 -0400 | [diff] [blame] | 1931 | /* unset promiscuity level from slave |
| 1932 | * NOTE: The NETDEV_CHANGEADDR call above may change the value |
| 1933 | * of the IFF_PROMISC flag in the bond_dev, but we need the |
| 1934 | * value of that flag before that change, as that was the value |
| 1935 | * when this slave was attached, so we cache at the start of the |
| 1936 | * function and use it here. Same goes for ALLMULTI below |
| 1937 | */ |
| 1938 | if (old_flags & IFF_PROMISC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1939 | dev_set_promiscuity(slave_dev, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1940 | |
| 1941 | /* unset allmulti level from slave */ |
Neil Horman | 5a0068d | 2013-09-27 12:22:15 -0400 | [diff] [blame] | 1942 | if (old_flags & IFF_ALLMULTI) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1943 | dev_set_allmulti(slave_dev, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1944 | |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 1945 | bond_hw_addr_flush(bond_dev, slave_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | } |
| 1947 | |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1948 | slave_disable_netpoll(slave); |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 1949 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | /* close slave before restoring its mac address */ |
| 1951 | dev_close(slave_dev); |
| 1952 | |
dingtianhong | 00503b6 | 2014-01-25 13:00:29 +0800 | [diff] [blame] | 1953 | if (bond->params.fail_over_mac != BOND_FOM_ACTIVE || |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 1954 | BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) { |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1955 | /* restore original ("permanent") mac address */ |
Joe Perches | ada0f86 | 2014-02-15 16:02:17 -0800 | [diff] [blame] | 1956 | ether_addr_copy(addr.sa_data, slave->perm_hwaddr); |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1957 | addr.sa_family = slave_dev->type; |
| 1958 | dev_set_mac_address(slave_dev, &addr); |
| 1959 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1960 | |
Jiri Pirko | b15ba0f | 2010-05-18 05:42:40 +0000 | [diff] [blame] | 1961 | dev_set_mtu(slave_dev, slave->original_mtu); |
| 1962 | |
Jiri Pirko | 2d7011c | 2011-03-16 08:46:43 +0000 | [diff] [blame] | 1963 | slave_dev->priv_flags &= ~IFF_BONDING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | |
dingtianhong | 3fdddd8 | 2014-05-12 15:08:43 +0800 | [diff] [blame] | 1965 | bond_free_slave(slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1966 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1967 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | } |
| 1969 | |
nikolay@redhat.com | 0896341 | 2013-02-18 14:09:42 +0000 | [diff] [blame] | 1970 | /* A wrapper used because of ndo_del_link */ |
| 1971 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev) |
| 1972 | { |
| 1973 | return __bond_release_one(bond_dev, slave_dev, false); |
| 1974 | } |
| 1975 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 1976 | /* First release a slave and then destroy the bond if no more slaves are left. |
| 1977 | * Must be under rtnl_lock when this function is called. |
| 1978 | */ |
stephen hemminger | 26d8ee7 | 2010-10-15 05:09:34 +0000 | [diff] [blame] | 1979 | static int bond_release_and_destroy(struct net_device *bond_dev, |
| 1980 | struct net_device *slave_dev) |
Moni Shoua | d90a162 | 2007-10-09 19:43:43 -0700 | [diff] [blame] | 1981 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 1982 | struct bonding *bond = netdev_priv(bond_dev); |
Moni Shoua | d90a162 | 2007-10-09 19:43:43 -0700 | [diff] [blame] | 1983 | int ret; |
| 1984 | |
| 1985 | ret = bond_release(bond_dev, slave_dev); |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 1986 | if (ret == 0 && !bond_has_slaves(bond)) { |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 1987 | bond_dev->priv_flags |= IFF_DISABLE_NETPOLL; |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 1988 | netdev_info(bond_dev, "Destroying bond %s\n", |
| 1989 | bond_dev->name); |
Nikolay Aleksandrov | 06f6d10 | 2015-07-15 21:52:51 +0200 | [diff] [blame] | 1990 | bond_remove_proc_entry(bond); |
Stephen Hemminger | 9e71626 | 2009-06-12 19:02:47 +0000 | [diff] [blame] | 1991 | unregister_netdevice(bond_dev); |
Moni Shoua | d90a162 | 2007-10-09 19:43:43 -0700 | [diff] [blame] | 1992 | } |
| 1993 | return ret; |
| 1994 | } |
| 1995 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | static int bond_info_query(struct net_device *bond_dev, struct ifbond *info) |
| 1997 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 1998 | struct bonding *bond = netdev_priv(bond_dev); |
Moni Shoua | 69a2338 | 2015-02-03 16:48:30 +0200 | [diff] [blame] | 1999 | bond_fill_ifbond(bond, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2000 | return 0; |
| 2001 | } |
| 2002 | |
| 2003 | static int bond_slave_info_query(struct net_device *bond_dev, struct ifslave *info) |
| 2004 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 2005 | struct bonding *bond = netdev_priv(bond_dev); |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 2006 | struct list_head *iter; |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 2007 | int i = 0, res = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2008 | struct slave *slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2009 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 2010 | bond_for_each_slave(bond, slave, iter) { |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 2011 | if (i++ == (int)info->slave_id) { |
Eric Dumazet | 689c96c | 2009-04-23 03:39:04 +0000 | [diff] [blame] | 2012 | res = 0; |
Moni Shoua | 69a2338 | 2015-02-03 16:48:30 +0200 | [diff] [blame] | 2013 | bond_fill_ifslave(slave, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | break; |
| 2015 | } |
| 2016 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | |
Eric Dumazet | 689c96c | 2009-04-23 03:39:04 +0000 | [diff] [blame] | 2018 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2019 | } |
| 2020 | |
| 2021 | /*-------------------------------- Monitoring -------------------------------*/ |
| 2022 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 2023 | /* called with rcu_read_lock() */ |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2024 | static int bond_miimon_inspect(struct bonding *bond) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2025 | { |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 2026 | int link_state, commit = 0; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 2027 | struct list_head *iter; |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2028 | struct slave *slave; |
Jiri Pirko | 41f8910 | 2009-04-24 03:57:29 +0000 | [diff] [blame] | 2029 | bool ignore_updelay; |
| 2030 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 2031 | ignore_updelay = !rcu_dereference(bond->curr_active_slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | |
dingtianhong | 4cb4f97 | 2013-12-13 10:19:39 +0800 | [diff] [blame] | 2033 | bond_for_each_slave_rcu(bond, slave, iter) { |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2034 | slave->new_link = BOND_LINK_NOCHANGE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2035 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2036 | link_state = bond_check_dev_link(bond, slave->dev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2037 | |
| 2038 | switch (slave->link) { |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2039 | case BOND_LINK_UP: |
| 2040 | if (link_state) |
| 2041 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2043 | bond_set_slave_link_state(slave, BOND_LINK_FAIL, |
| 2044 | BOND_SLAVE_NOTIFY_LATER); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2045 | slave->delay = bond->params.downdelay; |
| 2046 | if (slave->delay) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2047 | netdev_info(bond->dev, "link status down for %sinterface %s, disabling it in %d ms\n", |
| 2048 | (BOND_MODE(bond) == |
| 2049 | BOND_MODE_ACTIVEBACKUP) ? |
| 2050 | (bond_is_active_slave(slave) ? |
| 2051 | "active " : "backup ") : "", |
| 2052 | slave->dev->name, |
| 2053 | bond->params.downdelay * bond->params.miimon); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2054 | } |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2055 | /*FALLTHRU*/ |
| 2056 | case BOND_LINK_FAIL: |
| 2057 | if (link_state) { |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 2058 | /* recovered before downdelay expired */ |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2059 | bond_set_slave_link_state(slave, BOND_LINK_UP, |
| 2060 | BOND_SLAVE_NOTIFY_LATER); |
Veaceslav Falico | 8e60346 | 2014-02-18 07:48:46 +0100 | [diff] [blame] | 2061 | slave->last_link_up = jiffies; |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2062 | netdev_info(bond->dev, "link status up again after %d ms for interface %s\n", |
| 2063 | (bond->params.downdelay - slave->delay) * |
| 2064 | bond->params.miimon, |
| 2065 | slave->dev->name); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2066 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | } |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2068 | |
| 2069 | if (slave->delay <= 0) { |
| 2070 | slave->new_link = BOND_LINK_DOWN; |
| 2071 | commit++; |
| 2072 | continue; |
| 2073 | } |
| 2074 | |
| 2075 | slave->delay--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2076 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2078 | case BOND_LINK_DOWN: |
| 2079 | if (!link_state) |
| 2080 | continue; |
| 2081 | |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2082 | bond_set_slave_link_state(slave, BOND_LINK_BACK, |
| 2083 | BOND_SLAVE_NOTIFY_LATER); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2084 | slave->delay = bond->params.updelay; |
| 2085 | |
| 2086 | if (slave->delay) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2087 | netdev_info(bond->dev, "link status up for interface %s, enabling it in %d ms\n", |
| 2088 | slave->dev->name, |
| 2089 | ignore_updelay ? 0 : |
| 2090 | bond->params.updelay * |
| 2091 | bond->params.miimon); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2092 | } |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2093 | /*FALLTHRU*/ |
| 2094 | case BOND_LINK_BACK: |
| 2095 | if (!link_state) { |
Moni Shoua | 69a2338 | 2015-02-03 16:48:30 +0200 | [diff] [blame] | 2096 | bond_set_slave_link_state(slave, |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2097 | BOND_LINK_DOWN, |
| 2098 | BOND_SLAVE_NOTIFY_LATER); |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2099 | netdev_info(bond->dev, "link status down again after %d ms for interface %s\n", |
| 2100 | (bond->params.updelay - slave->delay) * |
| 2101 | bond->params.miimon, |
| 2102 | slave->dev->name); |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2103 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2104 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2105 | } |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2106 | |
Jiri Pirko | 41f8910 | 2009-04-24 03:57:29 +0000 | [diff] [blame] | 2107 | if (ignore_updelay) |
| 2108 | slave->delay = 0; |
| 2109 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2110 | if (slave->delay <= 0) { |
| 2111 | slave->new_link = BOND_LINK_UP; |
| 2112 | commit++; |
Jiri Pirko | 41f8910 | 2009-04-24 03:57:29 +0000 | [diff] [blame] | 2113 | ignore_updelay = false; |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2114 | continue; |
| 2115 | } |
| 2116 | |
| 2117 | slave->delay--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | break; |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2119 | } |
| 2120 | } |
| 2121 | |
| 2122 | return commit; |
| 2123 | } |
| 2124 | |
| 2125 | static void bond_miimon_commit(struct bonding *bond) |
| 2126 | { |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 2127 | struct list_head *iter; |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 2128 | struct slave *slave, *primary; |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2129 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 2130 | bond_for_each_slave(bond, slave, iter) { |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2131 | switch (slave->new_link) { |
| 2132 | case BOND_LINK_NOCHANGE: |
| 2133 | continue; |
| 2134 | |
| 2135 | case BOND_LINK_UP: |
Jay Vosburgh | 266b495 | 2016-02-08 12:10:02 -0800 | [diff] [blame] | 2136 | bond_update_speed_duplex(slave); |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2137 | bond_set_slave_link_state(slave, BOND_LINK_UP, |
| 2138 | BOND_SLAVE_NOTIFY_NOW); |
Veaceslav Falico | 8e60346 | 2014-02-18 07:48:46 +0100 | [diff] [blame] | 2139 | slave->last_link_up = jiffies; |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2140 | |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 2141 | primary = rtnl_dereference(bond->primary_slave); |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 2142 | if (BOND_MODE(bond) == BOND_MODE_8023AD) { |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2143 | /* prevent it from being the active one */ |
Jiri Pirko | e30bc06 | 2011-03-12 03:14:37 +0000 | [diff] [blame] | 2144 | bond_set_backup_slave(slave); |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 2145 | } else if (BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) { |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2146 | /* make it immediately active */ |
Jiri Pirko | e30bc06 | 2011-03-12 03:14:37 +0000 | [diff] [blame] | 2147 | bond_set_active_slave(slave); |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 2148 | } else if (slave != primary) { |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2149 | /* prevent it from being the active one */ |
Jiri Pirko | e30bc06 | 2011-03-12 03:14:37 +0000 | [diff] [blame] | 2150 | bond_set_backup_slave(slave); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2151 | } |
| 2152 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2153 | netdev_info(bond->dev, "link status definitely up for interface %s, %u Mbps %s duplex\n", |
| 2154 | slave->dev->name, |
| 2155 | slave->speed == SPEED_UNKNOWN ? 0 : slave->speed, |
| 2156 | slave->duplex ? "full" : "half"); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2157 | |
| 2158 | /* notify ad that the link status has changed */ |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 2159 | if (BOND_MODE(bond) == BOND_MODE_8023AD) |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2160 | bond_3ad_handle_link_change(slave, BOND_LINK_UP); |
| 2161 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 2162 | if (bond_is_lb(bond)) |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2163 | bond_alb_handle_link_change(bond, slave, |
| 2164 | BOND_LINK_UP); |
| 2165 | |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 2166 | if (BOND_MODE(bond) == BOND_MODE_XOR) |
| 2167 | bond_update_slave_arr(bond, NULL); |
| 2168 | |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 2169 | if (!bond->curr_active_slave || slave == primary) |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2170 | goto do_failover; |
| 2171 | |
| 2172 | continue; |
| 2173 | |
| 2174 | case BOND_LINK_DOWN: |
Jay Vosburgh | fba4acd | 2008-10-30 17:41:14 -0700 | [diff] [blame] | 2175 | if (slave->link_failure_count < UINT_MAX) |
| 2176 | slave->link_failure_count++; |
| 2177 | |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2178 | bond_set_slave_link_state(slave, BOND_LINK_DOWN, |
| 2179 | BOND_SLAVE_NOTIFY_NOW); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2180 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 2181 | if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || |
| 2182 | BOND_MODE(bond) == BOND_MODE_8023AD) |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 2183 | bond_set_slave_inactive_flags(slave, |
| 2184 | BOND_SLAVE_NOTIFY_NOW); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2185 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2186 | netdev_info(bond->dev, "link status definitely down for interface %s, disabling it\n", |
| 2187 | slave->dev->name); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2188 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 2189 | if (BOND_MODE(bond) == BOND_MODE_8023AD) |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2190 | bond_3ad_handle_link_change(slave, |
| 2191 | BOND_LINK_DOWN); |
| 2192 | |
Jiri Pirko | ae63e80 | 2009-05-27 05:42:36 +0000 | [diff] [blame] | 2193 | if (bond_is_lb(bond)) |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2194 | bond_alb_handle_link_change(bond, slave, |
| 2195 | BOND_LINK_DOWN); |
| 2196 | |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 2197 | if (BOND_MODE(bond) == BOND_MODE_XOR) |
| 2198 | bond_update_slave_arr(bond, NULL); |
| 2199 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 2200 | if (slave == rcu_access_pointer(bond->curr_active_slave)) |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2201 | goto do_failover; |
| 2202 | |
| 2203 | continue; |
| 2204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2205 | default: |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2206 | netdev_err(bond->dev, "invalid new link %d on slave %s\n", |
| 2207 | slave->new_link, slave->dev->name); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2208 | slave->new_link = BOND_LINK_NOCHANGE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2209 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2210 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | } |
| 2212 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2213 | do_failover: |
Neil Horman | e843fa5 | 2010-10-13 16:01:50 +0000 | [diff] [blame] | 2214 | block_netpoll_tx(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2215 | bond_select_active_slave(bond); |
Neil Horman | e843fa5 | 2010-10-13 16:01:50 +0000 | [diff] [blame] | 2216 | unblock_netpoll_tx(); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2217 | } |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2218 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2219 | bond_set_carrier(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | } |
| 2221 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 2222 | /* bond_mii_monitor |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2223 | * |
| 2224 | * Really a wrapper that splits the mii monitor into two phases: an |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2225 | * inspection, then (if inspection indicates something needs to be done) |
| 2226 | * an acquisition of appropriate locks followed by a commit phase to |
| 2227 | * implement whatever link state changes are indicated. |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2228 | */ |
stephen hemminger | 6da67d2 | 2013-12-30 10:43:41 -0800 | [diff] [blame] | 2229 | static void bond_mii_monitor(struct work_struct *work) |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2230 | { |
| 2231 | struct bonding *bond = container_of(work, struct bonding, |
| 2232 | mii_work.work); |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 2233 | bool should_notify_peers = false; |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2234 | unsigned long delay; |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2235 | |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2236 | delay = msecs_to_jiffies(bond->params.miimon); |
| 2237 | |
| 2238 | if (!bond_has_slaves(bond)) |
dingtianhong | 6b6c526 | 2013-10-24 11:09:03 +0800 | [diff] [blame] | 2239 | goto re_arm; |
dingtianhong | 6b6c526 | 2013-10-24 11:09:03 +0800 | [diff] [blame] | 2240 | |
dingtianhong | 4cb4f97 | 2013-12-13 10:19:39 +0800 | [diff] [blame] | 2241 | rcu_read_lock(); |
| 2242 | |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 2243 | should_notify_peers = bond_should_notify_peers(bond); |
| 2244 | |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2245 | if (bond_miimon_inspect(bond)) { |
dingtianhong | 4cb4f97 | 2013-12-13 10:19:39 +0800 | [diff] [blame] | 2246 | rcu_read_unlock(); |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2247 | |
| 2248 | /* Race avoidance with bond_close cancel of workqueue */ |
| 2249 | if (!rtnl_trylock()) { |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2250 | delay = 1; |
| 2251 | should_notify_peers = false; |
| 2252 | goto re_arm; |
| 2253 | } |
| 2254 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2255 | bond_miimon_commit(bond); |
| 2256 | |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2257 | rtnl_unlock(); /* might sleep, hold no other locks */ |
dingtianhong | 4cb4f97 | 2013-12-13 10:19:39 +0800 | [diff] [blame] | 2258 | } else |
| 2259 | rcu_read_unlock(); |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2260 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2261 | re_arm: |
Jay Vosburgh | e6d265e | 2011-10-28 15:42:50 +0000 | [diff] [blame] | 2262 | if (bond->params.miimon) |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2263 | queue_delayed_work(bond->wq, &bond->mii_work, delay); |
| 2264 | |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2265 | if (should_notify_peers) { |
| 2266 | if (!rtnl_trylock()) |
| 2267 | return; |
| 2268 | call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, bond->dev); |
| 2269 | rtnl_unlock(); |
| 2270 | } |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2271 | } |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2272 | |
Veaceslav Falico | 50223ce | 2013-08-28 23:25:11 +0200 | [diff] [blame] | 2273 | static bool bond_has_this_ip(struct bonding *bond, __be32 ip) |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2274 | { |
Veaceslav Falico | 50223ce | 2013-08-28 23:25:11 +0200 | [diff] [blame] | 2275 | struct net_device *upper; |
| 2276 | struct list_head *iter; |
| 2277 | bool ret = false; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2278 | |
Andy Gospodarek | eaddcd7 | 2012-03-22 16:14:29 +0000 | [diff] [blame] | 2279 | if (ip == bond_confirm_addr(bond->dev, 0, ip)) |
Veaceslav Falico | 50223ce | 2013-08-28 23:25:11 +0200 | [diff] [blame] | 2280 | return true; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2281 | |
Veaceslav Falico | 50223ce | 2013-08-28 23:25:11 +0200 | [diff] [blame] | 2282 | rcu_read_lock(); |
Veaceslav Falico | 2f268f1 | 2013-09-25 09:20:07 +0200 | [diff] [blame] | 2283 | netdev_for_each_all_upper_dev_rcu(bond->dev, upper, iter) { |
Veaceslav Falico | 50223ce | 2013-08-28 23:25:11 +0200 | [diff] [blame] | 2284 | if (ip == bond_confirm_addr(upper, 0, ip)) { |
| 2285 | ret = true; |
| 2286 | break; |
| 2287 | } |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2288 | } |
Veaceslav Falico | 50223ce | 2013-08-28 23:25:11 +0200 | [diff] [blame] | 2289 | rcu_read_unlock(); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2290 | |
Veaceslav Falico | 50223ce | 2013-08-28 23:25:11 +0200 | [diff] [blame] | 2291 | return ret; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2292 | } |
| 2293 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 2294 | /* We go to the (large) trouble of VLAN tagging ARP frames because |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2295 | * switches in VLAN mode (especially if ports are configured as |
| 2296 | * "native" to a VLAN) might not pass non-tagged frames. |
| 2297 | */ |
dingtianhong | fbd929f | 2014-03-25 17:44:43 +0800 | [diff] [blame] | 2298 | static void bond_arp_send(struct net_device *slave_dev, int arp_op, |
| 2299 | __be32 dest_ip, __be32 src_ip, |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2300 | struct bond_vlan_tag *tags) |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2301 | { |
| 2302 | struct sk_buff *skb; |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2303 | struct bond_vlan_tag *outer_tag = tags; |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2304 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2305 | netdev_dbg(slave_dev, "arp %d on slave %s: dst %pI4 src %pI4\n", |
| 2306 | arp_op, slave_dev->name, &dest_ip, &src_ip); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2307 | |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2308 | skb = arp_create(arp_op, ETH_P_ARP, dest_ip, slave_dev, src_ip, |
| 2309 | NULL, slave_dev->dev_addr, NULL); |
| 2310 | |
| 2311 | if (!skb) { |
dingtianhong | 4873ac3 | 2014-03-25 17:44:44 +0800 | [diff] [blame] | 2312 | net_err_ratelimited("ARP packet allocation failed\n"); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2313 | return; |
| 2314 | } |
dingtianhong | fbd929f | 2014-03-25 17:44:43 +0800 | [diff] [blame] | 2315 | |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2316 | if (!tags || tags->vlan_proto == VLAN_N_VID) |
| 2317 | goto xmit; |
| 2318 | |
| 2319 | tags++; |
| 2320 | |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2321 | /* Go through all the tags backwards and add them to the packet */ |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2322 | while (tags->vlan_proto != VLAN_N_VID) { |
| 2323 | if (!tags->vlan_id) { |
| 2324 | tags++; |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2325 | continue; |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2326 | } |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2327 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2328 | netdev_dbg(slave_dev, "inner tag: proto %X vid %X\n", |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2329 | ntohs(outer_tag->vlan_proto), tags->vlan_id); |
Jiri Pirko | 62749e2 | 2014-11-19 14:04:58 +0100 | [diff] [blame] | 2330 | skb = vlan_insert_tag_set_proto(skb, tags->vlan_proto, |
| 2331 | tags->vlan_id); |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2332 | if (!skb) { |
| 2333 | net_err_ratelimited("failed to insert inner VLAN tag\n"); |
| 2334 | return; |
| 2335 | } |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2336 | |
| 2337 | tags++; |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2338 | } |
| 2339 | /* Set the outer tag */ |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2340 | if (outer_tag->vlan_id) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2341 | netdev_dbg(slave_dev, "outer tag: proto %X vid %X\n", |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2342 | ntohs(outer_tag->vlan_proto), outer_tag->vlan_id); |
Jiri Pirko | b4bef1b | 2014-11-19 14:04:57 +0100 | [diff] [blame] | 2343 | __vlan_hwaccel_put_tag(skb, outer_tag->vlan_proto, |
| 2344 | outer_tag->vlan_id); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2345 | } |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2346 | |
| 2347 | xmit: |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2348 | arp_xmit(skb); |
| 2349 | } |
| 2350 | |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2351 | /* Validate the device path between the @start_dev and the @end_dev. |
| 2352 | * The path is valid if the @end_dev is reachable through device |
| 2353 | * stacking. |
| 2354 | * When the path is validated, collect any vlan information in the |
| 2355 | * path. |
| 2356 | */ |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2357 | struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, |
| 2358 | struct net_device *end_dev, |
| 2359 | int level) |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2360 | { |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2361 | struct bond_vlan_tag *tags; |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2362 | struct net_device *upper; |
| 2363 | struct list_head *iter; |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2364 | |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2365 | if (start_dev == end_dev) { |
| 2366 | tags = kzalloc(sizeof(*tags) * (level + 1), GFP_ATOMIC); |
| 2367 | if (!tags) |
| 2368 | return ERR_PTR(-ENOMEM); |
| 2369 | tags[level].vlan_proto = VLAN_N_VID; |
| 2370 | return tags; |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2371 | } |
| 2372 | |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2373 | netdev_for_each_upper_dev_rcu(start_dev, upper, iter) { |
| 2374 | tags = bond_verify_device_path(upper, end_dev, level + 1); |
| 2375 | if (IS_ERR_OR_NULL(tags)) { |
| 2376 | if (IS_ERR(tags)) |
| 2377 | return tags; |
| 2378 | continue; |
| 2379 | } |
| 2380 | if (is_vlan_dev(upper)) { |
| 2381 | tags[level].vlan_proto = vlan_dev_vlan_proto(upper); |
| 2382 | tags[level].vlan_id = vlan_dev_vlan_id(upper); |
| 2383 | } |
| 2384 | |
| 2385 | return tags; |
| 2386 | } |
| 2387 | |
| 2388 | return NULL; |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2389 | } |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2390 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2391 | static void bond_arp_send_all(struct bonding *bond, struct slave *slave) |
| 2392 | { |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2393 | struct rtable *rt; |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2394 | struct bond_vlan_tag *tags; |
Veaceslav Falico | 27bc11e | 2013-08-28 23:25:10 +0200 | [diff] [blame] | 2395 | __be32 *targets = bond->params.arp_targets, addr; |
dingtianhong | fbd929f | 2014-03-25 17:44:43 +0800 | [diff] [blame] | 2396 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2397 | |
Veaceslav Falico | 27bc11e | 2013-08-28 23:25:10 +0200 | [diff] [blame] | 2398 | for (i = 0; i < BOND_MAX_ARP_TARGETS && targets[i]; i++) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2399 | netdev_dbg(bond->dev, "basa: target %pI4\n", &targets[i]); |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2400 | tags = NULL; |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2401 | |
Veaceslav Falico | 27bc11e | 2013-08-28 23:25:10 +0200 | [diff] [blame] | 2402 | /* Find out through which dev should the packet go */ |
David S. Miller | 78fbfd8 | 2011-03-12 00:00:52 -0500 | [diff] [blame] | 2403 | rt = ip_route_output(dev_net(bond->dev), targets[i], 0, |
| 2404 | RTO_ONLINK, 0); |
David S. Miller | b23dd4f | 2011-03-02 14:31:35 -0800 | [diff] [blame] | 2405 | if (IS_ERR(rt)) { |
Veaceslav Falico | 2857276 | 2014-02-28 12:39:19 +0100 | [diff] [blame] | 2406 | /* there's no route to target - try to send arp |
| 2407 | * probe to generate any traffic (arp_validate=0) |
| 2408 | */ |
dingtianhong | 4873ac3 | 2014-03-25 17:44:44 +0800 | [diff] [blame] | 2409 | if (bond->params.arp_validate) |
| 2410 | net_warn_ratelimited("%s: no route to arp_ip_target %pI4 and arp_validate is set\n", |
| 2411 | bond->dev->name, |
| 2412 | &targets[i]); |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2413 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
| 2414 | 0, tags); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2415 | continue; |
| 2416 | } |
| 2417 | |
Veaceslav Falico | 27bc11e | 2013-08-28 23:25:10 +0200 | [diff] [blame] | 2418 | /* bond device itself */ |
| 2419 | if (rt->dst.dev == bond->dev) |
| 2420 | goto found; |
| 2421 | |
| 2422 | rcu_read_lock(); |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2423 | tags = bond_verify_device_path(bond->dev, rt->dst.dev, 0); |
Veaceslav Falico | 27bc11e | 2013-08-28 23:25:10 +0200 | [diff] [blame] | 2424 | rcu_read_unlock(); |
| 2425 | |
Veaceslav Falico | 3e403a7 | 2014-07-17 17:02:23 +0200 | [diff] [blame] | 2426 | if (!IS_ERR_OR_NULL(tags)) |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2427 | goto found; |
| 2428 | |
Veaceslav Falico | 27bc11e | 2013-08-28 23:25:10 +0200 | [diff] [blame] | 2429 | /* Not our device - skip */ |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2430 | netdev_dbg(bond->dev, "no path to arp_ip_target %pI4 via rt.dev %s\n", |
| 2431 | &targets[i], rt->dst.dev ? rt->dst.dev->name : "NULL"); |
Veaceslav Falico | 3e32582 | 2013-08-28 23:25:16 +0200 | [diff] [blame] | 2432 | |
Jay Vosburgh | ed4b9f8 | 2005-09-14 14:52:09 -0700 | [diff] [blame] | 2433 | ip_rt_put(rt); |
Veaceslav Falico | 27bc11e | 2013-08-28 23:25:10 +0200 | [diff] [blame] | 2434 | continue; |
| 2435 | |
| 2436 | found: |
| 2437 | addr = bond_confirm_addr(rt->dst.dev, targets[i], 0); |
| 2438 | ip_rt_put(rt); |
| 2439 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 2440 | addr, tags); |
Dan Carpenter | a67eed5 | 2014-07-25 15:21:21 +0300 | [diff] [blame] | 2441 | kfree(tags); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2442 | } |
| 2443 | } |
| 2444 | |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 2445 | static void bond_validate_arp(struct bonding *bond, struct slave *slave, __be32 sip, __be32 tip) |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2446 | { |
Veaceslav Falico | 8599b52 | 2013-06-24 11:49:34 +0200 | [diff] [blame] | 2447 | int i; |
| 2448 | |
Veaceslav Falico | 87a7b84 | 2013-06-24 11:49:29 +0200 | [diff] [blame] | 2449 | if (!sip || !bond_has_this_ip(bond, tip)) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2450 | netdev_dbg(bond->dev, "bva: sip %pI4 tip %pI4 not found\n", |
| 2451 | &sip, &tip); |
Veaceslav Falico | 87a7b84 | 2013-06-24 11:49:29 +0200 | [diff] [blame] | 2452 | return; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2453 | } |
Veaceslav Falico | 87a7b84 | 2013-06-24 11:49:29 +0200 | [diff] [blame] | 2454 | |
Veaceslav Falico | 8599b52 | 2013-06-24 11:49:34 +0200 | [diff] [blame] | 2455 | i = bond_get_targets_ip(bond->params.arp_targets, sip); |
| 2456 | if (i == -1) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2457 | netdev_dbg(bond->dev, "bva: sip %pI4 not found in targets\n", |
| 2458 | &sip); |
Veaceslav Falico | 87a7b84 | 2013-06-24 11:49:29 +0200 | [diff] [blame] | 2459 | return; |
| 2460 | } |
Veaceslav Falico | 49f17de | 2014-02-18 07:48:47 +0100 | [diff] [blame] | 2461 | slave->last_rx = jiffies; |
Veaceslav Falico | 8599b52 | 2013-06-24 11:49:34 +0200 | [diff] [blame] | 2462 | slave->target_last_arp_rx[i] = jiffies; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2463 | } |
| 2464 | |
nikolay@redhat.com | 5bb9e0b | 2013-09-07 00:00:26 +0200 | [diff] [blame] | 2465 | int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, |
| 2466 | struct slave *slave) |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2467 | { |
Eric Dumazet | de063b7 | 2012-06-11 19:23:07 +0000 | [diff] [blame] | 2468 | struct arphdr *arp = (struct arphdr *)skb->data; |
Jay Vosburgh | 21a75f0 | 2016-02-02 13:35:56 -0800 | [diff] [blame] | 2469 | struct slave *curr_active_slave, *curr_arp_slave; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2470 | unsigned char *arp_ptr; |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 2471 | __be32 sip, tip; |
Veaceslav Falico | f2cb691 | 2014-02-18 07:48:42 +0100 | [diff] [blame] | 2472 | int alen, is_arp = skb->protocol == __cpu_to_be16(ETH_P_ARP); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2473 | |
Veaceslav Falico | f2cb691 | 2014-02-18 07:48:42 +0100 | [diff] [blame] | 2474 | if (!slave_do_arp_validate(bond, slave)) { |
dingtianhong | bedabf9 | 2014-05-07 22:10:20 +0800 | [diff] [blame] | 2475 | if ((slave_do_arp_validate_only(bond) && is_arp) || |
| 2476 | !slave_do_arp_validate_only(bond)) |
Veaceslav Falico | 49f17de | 2014-02-18 07:48:47 +0100 | [diff] [blame] | 2477 | slave->last_rx = jiffies; |
Jiri Bohac | 13a8e0c | 2012-05-09 01:01:40 +0000 | [diff] [blame] | 2478 | return RX_HANDLER_ANOTHER; |
Veaceslav Falico | f2cb691 | 2014-02-18 07:48:42 +0100 | [diff] [blame] | 2479 | } else if (!is_arp) { |
| 2480 | return RX_HANDLER_ANOTHER; |
| 2481 | } |
Veaceslav Falico | 2c14610 | 2013-06-24 11:49:31 +0200 | [diff] [blame] | 2482 | |
Eric Dumazet | de063b7 | 2012-06-11 19:23:07 +0000 | [diff] [blame] | 2483 | alen = arp_hdr_len(bond->dev); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2484 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2485 | netdev_dbg(bond->dev, "bond_arp_rcv: skb->dev %s\n", |
| 2486 | skb->dev->name); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2487 | |
Eric Dumazet | de063b7 | 2012-06-11 19:23:07 +0000 | [diff] [blame] | 2488 | if (alen > skb_headlen(skb)) { |
| 2489 | arp = kmalloc(alen, GFP_ATOMIC); |
| 2490 | if (!arp) |
| 2491 | goto out_unlock; |
| 2492 | if (skb_copy_bits(skb, 0, arp, alen) < 0) |
| 2493 | goto out_unlock; |
| 2494 | } |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2495 | |
Jiri Pirko | 3aba891 | 2011-04-19 03:48:16 +0000 | [diff] [blame] | 2496 | if (arp->ar_hln != bond->dev->addr_len || |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2497 | skb->pkt_type == PACKET_OTHERHOST || |
| 2498 | skb->pkt_type == PACKET_LOOPBACK || |
| 2499 | arp->ar_hrd != htons(ARPHRD_ETHER) || |
| 2500 | arp->ar_pro != htons(ETH_P_IP) || |
| 2501 | arp->ar_pln != 4) |
| 2502 | goto out_unlock; |
| 2503 | |
| 2504 | arp_ptr = (unsigned char *)(arp + 1); |
Jiri Pirko | 3aba891 | 2011-04-19 03:48:16 +0000 | [diff] [blame] | 2505 | arp_ptr += bond->dev->addr_len; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2506 | memcpy(&sip, arp_ptr, 4); |
Jiri Pirko | 3aba891 | 2011-04-19 03:48:16 +0000 | [diff] [blame] | 2507 | arp_ptr += 4 + bond->dev->addr_len; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2508 | memcpy(&tip, arp_ptr, 4); |
| 2509 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2510 | netdev_dbg(bond->dev, "bond_arp_rcv: %s/%d av %d sv %d sip %pI4 tip %pI4\n", |
| 2511 | slave->dev->name, bond_slave_state(slave), |
| 2512 | bond->params.arp_validate, slave_do_arp_validate(bond, slave), |
| 2513 | &sip, &tip); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2514 | |
Veaceslav Falico | 010d3c3 | 2014-02-20 12:07:57 +0100 | [diff] [blame] | 2515 | curr_active_slave = rcu_dereference(bond->curr_active_slave); |
Jay Vosburgh | 21a75f0 | 2016-02-02 13:35:56 -0800 | [diff] [blame] | 2516 | curr_arp_slave = rcu_dereference(bond->current_arp_slave); |
Veaceslav Falico | 010d3c3 | 2014-02-20 12:07:57 +0100 | [diff] [blame] | 2517 | |
Jay Vosburgh | 21a75f0 | 2016-02-02 13:35:56 -0800 | [diff] [blame] | 2518 | /* We 'trust' the received ARP enough to validate it if: |
Veaceslav Falico | aeea64a | 2013-06-24 11:49:32 +0200 | [diff] [blame] | 2519 | * |
Jay Vosburgh | 21a75f0 | 2016-02-02 13:35:56 -0800 | [diff] [blame] | 2520 | * (a) the slave receiving the ARP is active (which includes the |
| 2521 | * current ARP slave, if any), or |
| 2522 | * |
| 2523 | * (b) the receiving slave isn't active, but there is a currently |
| 2524 | * active slave and it received valid arp reply(s) after it became |
| 2525 | * the currently active slave, or |
| 2526 | * |
| 2527 | * (c) there is an ARP slave that sent an ARP during the prior ARP |
| 2528 | * interval, and we receive an ARP reply on any slave. We accept |
| 2529 | * these because switch FDB update delays may deliver the ARP |
| 2530 | * reply to a slave other than the sender of the ARP request. |
| 2531 | * |
| 2532 | * Note: for (b), backup slaves are receiving the broadcast ARP |
| 2533 | * request, not a reply. This request passes from the sending |
| 2534 | * slave through the L2 switch(es) to the receiving slave. Since |
| 2535 | * this is checking the request, sip/tip are swapped for |
| 2536 | * validation. |
| 2537 | * |
| 2538 | * This is done to avoid endless looping when we can't reach the |
Veaceslav Falico | aeea64a | 2013-06-24 11:49:32 +0200 | [diff] [blame] | 2539 | * arp_ip_target and fool ourselves with our own arp requests. |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2540 | */ |
Jiri Pirko | e30bc06 | 2011-03-12 03:14:37 +0000 | [diff] [blame] | 2541 | if (bond_is_active_slave(slave)) |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2542 | bond_validate_arp(bond, slave, sip, tip); |
Veaceslav Falico | 010d3c3 | 2014-02-20 12:07:57 +0100 | [diff] [blame] | 2543 | else if (curr_active_slave && |
| 2544 | time_after(slave_last_rx(bond, curr_active_slave), |
| 2545 | curr_active_slave->last_link_up)) |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2546 | bond_validate_arp(bond, slave, tip, sip); |
Jay Vosburgh | 21a75f0 | 2016-02-02 13:35:56 -0800 | [diff] [blame] | 2547 | else if (curr_arp_slave && (arp->ar_op == htons(ARPOP_REPLY)) && |
| 2548 | bond_time_in_interval(bond, |
| 2549 | dev_trans_start(curr_arp_slave->dev), 1)) |
| 2550 | bond_validate_arp(bond, slave, sip, tip); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2551 | |
| 2552 | out_unlock: |
Eric Dumazet | de063b7 | 2012-06-11 19:23:07 +0000 | [diff] [blame] | 2553 | if (arp != (struct arphdr *)skb->data) |
| 2554 | kfree(arp); |
Jiri Bohac | 13a8e0c | 2012-05-09 01:01:40 +0000 | [diff] [blame] | 2555 | return RX_HANDLER_ANOTHER; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2556 | } |
| 2557 | |
Veaceslav Falico | e7f63f1 | 2013-08-03 03:50:36 +0200 | [diff] [blame] | 2558 | /* function to verify if we're in the arp_interval timeslice, returns true if |
| 2559 | * (last_act - arp_interval) <= jiffies <= (last_act + mod * arp_interval + |
| 2560 | * arp_interval/2) . the arp_interval/2 is needed for really fast networks. |
| 2561 | */ |
| 2562 | static bool bond_time_in_interval(struct bonding *bond, unsigned long last_act, |
| 2563 | int mod) |
| 2564 | { |
| 2565 | int delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
| 2566 | |
| 2567 | return time_in_range(jiffies, |
| 2568 | last_act - delta_in_ticks, |
| 2569 | last_act + mod * delta_in_ticks + delta_in_ticks/2); |
| 2570 | } |
| 2571 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 2572 | /* This function is called regularly to monitor each slave's link |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2573 | * ensuring that traffic is being sent and received when arp monitoring |
| 2574 | * is used in load-balancing mode. if the adapter has been dormant, then an |
| 2575 | * arp is transmitted to generate traffic. see activebackup_arp_monitor for |
| 2576 | * arp monitoring in active backup mode. |
| 2577 | */ |
stephen hemminger | 6da67d2 | 2013-12-30 10:43:41 -0800 | [diff] [blame] | 2578 | static void bond_loadbalance_arp_mon(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2579 | { |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 2580 | struct bonding *bond = container_of(work, struct bonding, |
| 2581 | arp_work.work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2582 | struct slave *slave, *oldcurrent; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 2583 | struct list_head *iter; |
Ding Tianhong | 6fde8f0 | 2014-01-28 11:48:53 +0800 | [diff] [blame] | 2584 | int do_failover = 0, slave_state_changed = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2585 | |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2586 | if (!bond_has_slaves(bond)) |
dingtianhong | 7f1bb57 | 2013-10-24 11:09:17 +0800 | [diff] [blame] | 2587 | goto re_arm; |
dingtianhong | 7f1bb57 | 2013-10-24 11:09:17 +0800 | [diff] [blame] | 2588 | |
dingtianhong | 2e52f4f | 2013-12-13 10:19:50 +0800 | [diff] [blame] | 2589 | rcu_read_lock(); |
| 2590 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 2591 | oldcurrent = rcu_dereference(bond->curr_active_slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2592 | /* see if any of the previous devices are up now (i.e. they have |
| 2593 | * xmt and rcv traffic). the curr_active_slave does not come into |
Veaceslav Falico | 8e60346 | 2014-02-18 07:48:46 +0100 | [diff] [blame] | 2594 | * the picture unless it is null. also, slave->last_link_up is not |
| 2595 | * needed here because we send an arp on each slave and give a slave |
| 2596 | * as long as it needs to get the tx/rx within the delta. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2597 | * TODO: what about up/down delay in arp mode? it wasn't here before |
| 2598 | * so it can wait |
| 2599 | */ |
dingtianhong | 2e52f4f | 2013-12-13 10:19:50 +0800 | [diff] [blame] | 2600 | bond_for_each_slave_rcu(bond, slave, iter) { |
Jiri Bohac | cb32f2a | 2010-09-02 05:45:54 +0000 | [diff] [blame] | 2601 | unsigned long trans_start = dev_trans_start(slave->dev); |
| 2602 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2603 | if (slave->link != BOND_LINK_UP) { |
Veaceslav Falico | e7f63f1 | 2013-08-03 03:50:36 +0200 | [diff] [blame] | 2604 | if (bond_time_in_interval(bond, trans_start, 1) && |
Veaceslav Falico | 49f17de | 2014-02-18 07:48:47 +0100 | [diff] [blame] | 2605 | bond_time_in_interval(bond, slave->last_rx, 1)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2606 | |
| 2607 | slave->link = BOND_LINK_UP; |
Ding Tianhong | 6fde8f0 | 2014-01-28 11:48:53 +0800 | [diff] [blame] | 2608 | slave_state_changed = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2609 | |
| 2610 | /* primary_slave has no meaning in round-robin |
| 2611 | * mode. the window of a slave being up and |
| 2612 | * curr_active_slave being null after enslaving |
| 2613 | * is closed. |
| 2614 | */ |
| 2615 | if (!oldcurrent) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2616 | netdev_info(bond->dev, "link status definitely up for interface %s\n", |
| 2617 | slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2618 | do_failover = 1; |
| 2619 | } else { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2620 | netdev_info(bond->dev, "interface %s is now up\n", |
| 2621 | slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2622 | } |
| 2623 | } |
| 2624 | } else { |
| 2625 | /* slave->link == BOND_LINK_UP */ |
| 2626 | |
| 2627 | /* not all switches will respond to an arp request |
| 2628 | * when the source ip is 0, so don't take the link down |
| 2629 | * if we don't know our ip yet |
| 2630 | */ |
Veaceslav Falico | e7f63f1 | 2013-08-03 03:50:36 +0200 | [diff] [blame] | 2631 | if (!bond_time_in_interval(bond, trans_start, 2) || |
Veaceslav Falico | 49f17de | 2014-02-18 07:48:47 +0100 | [diff] [blame] | 2632 | !bond_time_in_interval(bond, slave->last_rx, 2)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2633 | |
| 2634 | slave->link = BOND_LINK_DOWN; |
Ding Tianhong | 6fde8f0 | 2014-01-28 11:48:53 +0800 | [diff] [blame] | 2635 | slave_state_changed = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2636 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2637 | if (slave->link_failure_count < UINT_MAX) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2638 | slave->link_failure_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2639 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2640 | netdev_info(bond->dev, "interface %s is now down\n", |
| 2641 | slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2642 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2643 | if (slave == oldcurrent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2644 | do_failover = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2645 | } |
| 2646 | } |
| 2647 | |
| 2648 | /* note: if switch is in round-robin mode, all links |
| 2649 | * must tx arp to ensure all links rx an arp - otherwise |
| 2650 | * links may oscillate or not come up at all; if switch is |
| 2651 | * in something like xor mode, there is nothing we can |
| 2652 | * do - all replies will be rx'ed on same link causing slaves |
| 2653 | * to be unstable during low/no traffic periods |
| 2654 | */ |
Veaceslav Falico | b6adc61 | 2014-05-15 21:39:57 +0200 | [diff] [blame] | 2655 | if (bond_slave_is_up(slave)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2656 | bond_arp_send_all(bond, slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2657 | } |
| 2658 | |
dingtianhong | 2e52f4f | 2013-12-13 10:19:50 +0800 | [diff] [blame] | 2659 | rcu_read_unlock(); |
| 2660 | |
Ding Tianhong | 6fde8f0 | 2014-01-28 11:48:53 +0800 | [diff] [blame] | 2661 | if (do_failover || slave_state_changed) { |
dingtianhong | 2e52f4f | 2013-12-13 10:19:50 +0800 | [diff] [blame] | 2662 | if (!rtnl_trylock()) |
| 2663 | goto re_arm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2664 | |
Ding Tianhong | 6fde8f0 | 2014-01-28 11:48:53 +0800 | [diff] [blame] | 2665 | if (slave_state_changed) { |
| 2666 | bond_slave_state_change(bond); |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 2667 | if (BOND_MODE(bond) == BOND_MODE_XOR) |
| 2668 | bond_update_slave_arr(bond, NULL); |
Nikolay Aleksandrov | b8e4500 | 2014-11-18 15:14:44 +0100 | [diff] [blame] | 2669 | } |
| 2670 | if (do_failover) { |
Ding Tianhong | 6fde8f0 | 2014-01-28 11:48:53 +0800 | [diff] [blame] | 2671 | block_netpoll_tx(); |
Ding Tianhong | 6fde8f0 | 2014-01-28 11:48:53 +0800 | [diff] [blame] | 2672 | bond_select_active_slave(bond); |
Ding Tianhong | 6fde8f0 | 2014-01-28 11:48:53 +0800 | [diff] [blame] | 2673 | unblock_netpoll_tx(); |
| 2674 | } |
dingtianhong | 2e52f4f | 2013-12-13 10:19:50 +0800 | [diff] [blame] | 2675 | rtnl_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2676 | } |
| 2677 | |
| 2678 | re_arm: |
Jay Vosburgh | e6d265e | 2011-10-28 15:42:50 +0000 | [diff] [blame] | 2679 | if (bond->params.arp_interval) |
Veaceslav Falico | e7f63f1 | 2013-08-03 03:50:36 +0200 | [diff] [blame] | 2680 | queue_delayed_work(bond->wq, &bond->arp_work, |
| 2681 | msecs_to_jiffies(bond->params.arp_interval)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2682 | } |
| 2683 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 2684 | /* Called to inspect slaves for active-backup mode ARP monitor link state |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2685 | * changes. Sets new_link in slaves to specify what action should take |
| 2686 | * place for the slave. Returns 0 if no changes are found, >0 if changes |
| 2687 | * to link states must be committed. |
| 2688 | * |
Nikolay Aleksandrov | 8c0bc55 | 2014-09-11 22:49:28 +0200 | [diff] [blame] | 2689 | * Called with rcu_read_lock held. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2690 | */ |
Veaceslav Falico | e7f63f1 | 2013-08-03 03:50:36 +0200 | [diff] [blame] | 2691 | static int bond_ab_arp_inspect(struct bonding *bond) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2692 | { |
Veaceslav Falico | def4460 | 2013-08-03 03:50:35 +0200 | [diff] [blame] | 2693 | unsigned long trans_start, last_rx; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 2694 | struct list_head *iter; |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 2695 | struct slave *slave; |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 2696 | int commit = 0; |
Jiri Bohac | da210f5 | 2012-08-30 12:02:47 +0000 | [diff] [blame] | 2697 | |
dingtianhong | eb9fa4b | 2013-12-13 10:20:02 +0800 | [diff] [blame] | 2698 | bond_for_each_slave_rcu(bond, slave, iter) { |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2699 | slave->new_link = BOND_LINK_NOCHANGE; |
Veaceslav Falico | def4460 | 2013-08-03 03:50:35 +0200 | [diff] [blame] | 2700 | last_rx = slave_last_rx(bond, slave); |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2701 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2702 | if (slave->link != BOND_LINK_UP) { |
Veaceslav Falico | e7f63f1 | 2013-08-03 03:50:36 +0200 | [diff] [blame] | 2703 | if (bond_time_in_interval(bond, last_rx, 1)) { |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2704 | slave->new_link = BOND_LINK_UP; |
| 2705 | commit++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2706 | } |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2707 | continue; |
| 2708 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2709 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 2710 | /* Give slaves 2*delta after being enslaved or made |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2711 | * active. This avoids bouncing, as the last receive |
| 2712 | * times need a full ARP monitor cycle to be updated. |
| 2713 | */ |
Veaceslav Falico | 8e60346 | 2014-02-18 07:48:46 +0100 | [diff] [blame] | 2714 | if (bond_time_in_interval(bond, slave->last_link_up, 2)) |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2715 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2716 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 2717 | /* Backup slave is down if: |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2718 | * - No current_arp_slave AND |
| 2719 | * - more than 3*delta since last receive AND |
| 2720 | * - the bond has an IP address |
| 2721 | * |
| 2722 | * Note: a non-null current_arp_slave indicates |
| 2723 | * the curr_active_slave went down and we are |
| 2724 | * searching for a new one; under this condition |
| 2725 | * we only take the curr_active_slave down - this |
| 2726 | * gives each slave a chance to tx/rx traffic |
| 2727 | * before being taken out |
| 2728 | */ |
Jiri Pirko | e30bc06 | 2011-03-12 03:14:37 +0000 | [diff] [blame] | 2729 | if (!bond_is_active_slave(slave) && |
Eric Dumazet | 85741718 | 2014-07-15 06:56:56 -0700 | [diff] [blame] | 2730 | !rcu_access_pointer(bond->current_arp_slave) && |
Veaceslav Falico | e7f63f1 | 2013-08-03 03:50:36 +0200 | [diff] [blame] | 2731 | !bond_time_in_interval(bond, last_rx, 3)) { |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2732 | slave->new_link = BOND_LINK_DOWN; |
| 2733 | commit++; |
| 2734 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2735 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 2736 | /* Active slave is down if: |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2737 | * - more than 2*delta since transmitting OR |
| 2738 | * - (more than 2*delta since receive AND |
| 2739 | * the bond has an IP address) |
| 2740 | */ |
Jiri Bohac | cb32f2a | 2010-09-02 05:45:54 +0000 | [diff] [blame] | 2741 | trans_start = dev_trans_start(slave->dev); |
Jiri Pirko | e30bc06 | 2011-03-12 03:14:37 +0000 | [diff] [blame] | 2742 | if (bond_is_active_slave(slave) && |
Veaceslav Falico | e7f63f1 | 2013-08-03 03:50:36 +0200 | [diff] [blame] | 2743 | (!bond_time_in_interval(bond, trans_start, 2) || |
| 2744 | !bond_time_in_interval(bond, last_rx, 2))) { |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2745 | slave->new_link = BOND_LINK_DOWN; |
| 2746 | commit++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2747 | } |
| 2748 | } |
| 2749 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2750 | return commit; |
| 2751 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2752 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 2753 | /* Called to commit link state changes noted by inspection step of |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2754 | * active-backup mode ARP monitor. |
| 2755 | * |
dingtianhong | eb9fa4b | 2013-12-13 10:20:02 +0800 | [diff] [blame] | 2756 | * Called with RTNL hold. |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2757 | */ |
Veaceslav Falico | e7f63f1 | 2013-08-03 03:50:36 +0200 | [diff] [blame] | 2758 | static void bond_ab_arp_commit(struct bonding *bond) |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2759 | { |
Jiri Bohac | cb32f2a | 2010-09-02 05:45:54 +0000 | [diff] [blame] | 2760 | unsigned long trans_start; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 2761 | struct list_head *iter; |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 2762 | struct slave *slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2763 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 2764 | bond_for_each_slave(bond, slave, iter) { |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2765 | switch (slave->new_link) { |
| 2766 | case BOND_LINK_NOCHANGE: |
| 2767 | continue; |
| 2768 | |
| 2769 | case BOND_LINK_UP: |
Jiri Bohac | cb32f2a | 2010-09-02 05:45:54 +0000 | [diff] [blame] | 2770 | trans_start = dev_trans_start(slave->dev); |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 2771 | if (rtnl_dereference(bond->curr_active_slave) != slave || |
| 2772 | (!rtnl_dereference(bond->curr_active_slave) && |
Veaceslav Falico | e7f63f1 | 2013-08-03 03:50:36 +0200 | [diff] [blame] | 2773 | bond_time_in_interval(bond, trans_start, 1))) { |
Eric Dumazet | 85741718 | 2014-07-15 06:56:56 -0700 | [diff] [blame] | 2774 | struct slave *current_arp_slave; |
| 2775 | |
| 2776 | current_arp_slave = rtnl_dereference(bond->current_arp_slave); |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2777 | bond_set_slave_link_state(slave, BOND_LINK_UP, |
| 2778 | BOND_SLAVE_NOTIFY_NOW); |
Eric Dumazet | 85741718 | 2014-07-15 06:56:56 -0700 | [diff] [blame] | 2779 | if (current_arp_slave) { |
Veaceslav Falico | 5a43097 | 2012-04-05 03:47:43 +0000 | [diff] [blame] | 2780 | bond_set_slave_inactive_flags( |
Eric Dumazet | 85741718 | 2014-07-15 06:56:56 -0700 | [diff] [blame] | 2781 | current_arp_slave, |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 2782 | BOND_SLAVE_NOTIFY_NOW); |
Eric Dumazet | 85741718 | 2014-07-15 06:56:56 -0700 | [diff] [blame] | 2783 | RCU_INIT_POINTER(bond->current_arp_slave, NULL); |
Veaceslav Falico | 5a43097 | 2012-04-05 03:47:43 +0000 | [diff] [blame] | 2784 | } |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2785 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2786 | netdev_info(bond->dev, "link status definitely up for interface %s\n", |
| 2787 | slave->dev->name); |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2788 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 2789 | if (!rtnl_dereference(bond->curr_active_slave) || |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 2790 | slave == rtnl_dereference(bond->primary_slave)) |
Jiri Pirko | b9f6025 | 2009-08-31 11:09:38 +0000 | [diff] [blame] | 2791 | goto do_failover; |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2792 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2793 | } |
| 2794 | |
Jiri Pirko | b9f6025 | 2009-08-31 11:09:38 +0000 | [diff] [blame] | 2795 | continue; |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2796 | |
| 2797 | case BOND_LINK_DOWN: |
| 2798 | if (slave->link_failure_count < UINT_MAX) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2799 | slave->link_failure_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2800 | |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2801 | bond_set_slave_link_state(slave, BOND_LINK_DOWN, |
| 2802 | BOND_SLAVE_NOTIFY_NOW); |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 2803 | bond_set_slave_inactive_flags(slave, |
| 2804 | BOND_SLAVE_NOTIFY_NOW); |
Jiri Pirko | b9f6025 | 2009-08-31 11:09:38 +0000 | [diff] [blame] | 2805 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2806 | netdev_info(bond->dev, "link status definitely down for interface %s, disabling it\n", |
| 2807 | slave->dev->name); |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2808 | |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 2809 | if (slave == rtnl_dereference(bond->curr_active_slave)) { |
Eric Dumazet | 85741718 | 2014-07-15 06:56:56 -0700 | [diff] [blame] | 2810 | RCU_INIT_POINTER(bond->current_arp_slave, NULL); |
Jiri Pirko | b9f6025 | 2009-08-31 11:09:38 +0000 | [diff] [blame] | 2811 | goto do_failover; |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2812 | } |
Jiri Pirko | b9f6025 | 2009-08-31 11:09:38 +0000 | [diff] [blame] | 2813 | |
| 2814 | continue; |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2815 | |
| 2816 | default: |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2817 | netdev_err(bond->dev, "impossible: new_link %d on slave %s\n", |
| 2818 | slave->new_link, slave->dev->name); |
Jiri Pirko | b9f6025 | 2009-08-31 11:09:38 +0000 | [diff] [blame] | 2819 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2820 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2821 | |
Jiri Pirko | b9f6025 | 2009-08-31 11:09:38 +0000 | [diff] [blame] | 2822 | do_failover: |
Neil Horman | e843fa5 | 2010-10-13 16:01:50 +0000 | [diff] [blame] | 2823 | block_netpoll_tx(); |
Jiri Pirko | b9f6025 | 2009-08-31 11:09:38 +0000 | [diff] [blame] | 2824 | bond_select_active_slave(bond); |
Neil Horman | e843fa5 | 2010-10-13 16:01:50 +0000 | [diff] [blame] | 2825 | unblock_netpoll_tx(); |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2826 | } |
| 2827 | |
| 2828 | bond_set_carrier(bond); |
| 2829 | } |
| 2830 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 2831 | /* Send ARP probes for active-backup mode ARP monitor. |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2832 | * |
Nikolay Aleksandrov | 8c0bc55 | 2014-09-11 22:49:28 +0200 | [diff] [blame] | 2833 | * Called with rcu_read_lock held. |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2834 | */ |
Veaceslav Falico | f2ebd47 | 2014-01-27 14:37:32 +0100 | [diff] [blame] | 2835 | static bool bond_ab_arp_probe(struct bonding *bond) |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2836 | { |
dingtianhong | eb9fa4b | 2013-12-13 10:20:02 +0800 | [diff] [blame] | 2837 | struct slave *slave, *before = NULL, *new_slave = NULL, |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2838 | *curr_arp_slave = rcu_dereference(bond->current_arp_slave), |
| 2839 | *curr_active_slave = rcu_dereference(bond->curr_active_slave); |
Veaceslav Falico | 4087df87 | 2013-09-25 09:20:19 +0200 | [diff] [blame] | 2840 | struct list_head *iter; |
| 2841 | bool found = false; |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2842 | bool should_notify_rtnl = BOND_SLAVE_NOTIFY_LATER; |
Veaceslav Falico | f2ebd47 | 2014-01-27 14:37:32 +0100 | [diff] [blame] | 2843 | |
Veaceslav Falico | 98b90f2 | 2014-01-27 14:37:31 +0100 | [diff] [blame] | 2844 | if (curr_arp_slave && curr_active_slave) |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2845 | netdev_info(bond->dev, "PROBE: c_arp %s && cas %s BAD\n", |
| 2846 | curr_arp_slave->dev->name, |
| 2847 | curr_active_slave->dev->name); |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2848 | |
Veaceslav Falico | 98b90f2 | 2014-01-27 14:37:31 +0100 | [diff] [blame] | 2849 | if (curr_active_slave) { |
| 2850 | bond_arp_send_all(bond, curr_active_slave); |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2851 | return should_notify_rtnl; |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2852 | } |
| 2853 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2854 | /* if we don't have a curr_active_slave, search for the next available |
| 2855 | * backup slave from the current_arp_slave and make it the candidate |
| 2856 | * for becoming the curr_active_slave |
| 2857 | */ |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2858 | |
dingtianhong | eb9fa4b | 2013-12-13 10:20:02 +0800 | [diff] [blame] | 2859 | if (!curr_arp_slave) { |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2860 | curr_arp_slave = bond_first_slave_rcu(bond); |
| 2861 | if (!curr_arp_slave) |
| 2862 | return should_notify_rtnl; |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2863 | } |
| 2864 | |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2865 | bond_set_slave_inactive_flags(curr_arp_slave, BOND_SLAVE_NOTIFY_LATER); |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2866 | |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2867 | bond_for_each_slave_rcu(bond, slave, iter) { |
Veaceslav Falico | b6adc61 | 2014-05-15 21:39:57 +0200 | [diff] [blame] | 2868 | if (!found && !before && bond_slave_is_up(slave)) |
Veaceslav Falico | 4087df87 | 2013-09-25 09:20:19 +0200 | [diff] [blame] | 2869 | before = slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2870 | |
Veaceslav Falico | b6adc61 | 2014-05-15 21:39:57 +0200 | [diff] [blame] | 2871 | if (found && !new_slave && bond_slave_is_up(slave)) |
Veaceslav Falico | 4087df87 | 2013-09-25 09:20:19 +0200 | [diff] [blame] | 2872 | new_slave = slave; |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2873 | /* if the link state is up at this point, we |
| 2874 | * mark it down - this can happen if we have |
| 2875 | * simultaneous link failures and |
| 2876 | * reselect_active_interface doesn't make this |
| 2877 | * one the current slave so it is still marked |
| 2878 | * up when it is actually down |
| 2879 | */ |
Veaceslav Falico | b6adc61 | 2014-05-15 21:39:57 +0200 | [diff] [blame] | 2880 | if (!bond_slave_is_up(slave) && slave->link == BOND_LINK_UP) { |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2881 | bond_set_slave_link_state(slave, BOND_LINK_DOWN, |
| 2882 | BOND_SLAVE_NOTIFY_LATER); |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2883 | if (slave->link_failure_count < UINT_MAX) |
| 2884 | slave->link_failure_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2885 | |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 2886 | bond_set_slave_inactive_flags(slave, |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2887 | BOND_SLAVE_NOTIFY_LATER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2888 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 2889 | netdev_info(bond->dev, "backup interface %s is now down\n", |
| 2890 | slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2891 | } |
dingtianhong | eb9fa4b | 2013-12-13 10:20:02 +0800 | [diff] [blame] | 2892 | if (slave == curr_arp_slave) |
Veaceslav Falico | 4087df87 | 2013-09-25 09:20:19 +0200 | [diff] [blame] | 2893 | found = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2894 | } |
Veaceslav Falico | 4087df87 | 2013-09-25 09:20:19 +0200 | [diff] [blame] | 2895 | |
| 2896 | if (!new_slave && before) |
| 2897 | new_slave = before; |
| 2898 | |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2899 | if (!new_slave) |
| 2900 | goto check_state; |
Veaceslav Falico | 4087df87 | 2013-09-25 09:20:19 +0200 | [diff] [blame] | 2901 | |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2902 | bond_set_slave_link_state(new_slave, BOND_LINK_BACK, |
| 2903 | BOND_SLAVE_NOTIFY_LATER); |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2904 | bond_set_slave_active_flags(new_slave, BOND_SLAVE_NOTIFY_LATER); |
Veaceslav Falico | 4087df87 | 2013-09-25 09:20:19 +0200 | [diff] [blame] | 2905 | bond_arp_send_all(bond, new_slave); |
Veaceslav Falico | 8e60346 | 2014-02-18 07:48:46 +0100 | [diff] [blame] | 2906 | new_slave->last_link_up = jiffies; |
dingtianhong | eb9fa4b | 2013-12-13 10:20:02 +0800 | [diff] [blame] | 2907 | rcu_assign_pointer(bond->current_arp_slave, new_slave); |
Veaceslav Falico | f2ebd47 | 2014-01-27 14:37:32 +0100 | [diff] [blame] | 2908 | |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2909 | check_state: |
| 2910 | bond_for_each_slave_rcu(bond, slave, iter) { |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2911 | if (slave->should_notify || slave->should_notify_link) { |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2912 | should_notify_rtnl = BOND_SLAVE_NOTIFY_NOW; |
| 2913 | break; |
| 2914 | } |
| 2915 | } |
| 2916 | return should_notify_rtnl; |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2917 | } |
| 2918 | |
stephen hemminger | 6da67d2 | 2013-12-30 10:43:41 -0800 | [diff] [blame] | 2919 | static void bond_activebackup_arp_mon(struct work_struct *work) |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2920 | { |
| 2921 | struct bonding *bond = container_of(work, struct bonding, |
| 2922 | arp_work.work); |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2923 | bool should_notify_peers = false; |
| 2924 | bool should_notify_rtnl = false; |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2925 | int delta_in_ticks; |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2926 | |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2927 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
| 2928 | |
| 2929 | if (!bond_has_slaves(bond)) |
dingtianhong | 80b9d23 | 2013-10-24 11:09:25 +0800 | [diff] [blame] | 2930 | goto re_arm; |
dingtianhong | 80b9d23 | 2013-10-24 11:09:25 +0800 | [diff] [blame] | 2931 | |
dingtianhong | eb9fa4b | 2013-12-13 10:20:02 +0800 | [diff] [blame] | 2932 | rcu_read_lock(); |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 2933 | |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2934 | should_notify_peers = bond_should_notify_peers(bond); |
| 2935 | |
| 2936 | if (bond_ab_arp_inspect(bond)) { |
| 2937 | rcu_read_unlock(); |
| 2938 | |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2939 | /* Race avoidance with bond_close flush of workqueue */ |
| 2940 | if (!rtnl_trylock()) { |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2941 | delta_in_ticks = 1; |
| 2942 | should_notify_peers = false; |
| 2943 | goto re_arm; |
| 2944 | } |
| 2945 | |
Veaceslav Falico | e7f63f1 | 2013-08-03 03:50:36 +0200 | [diff] [blame] | 2946 | bond_ab_arp_commit(bond); |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2947 | |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2948 | rtnl_unlock(); |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2949 | rcu_read_lock(); |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2950 | } |
| 2951 | |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2952 | should_notify_rtnl = bond_ab_arp_probe(bond); |
| 2953 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2954 | |
| 2955 | re_arm: |
Jay Vosburgh | e6d265e | 2011-10-28 15:42:50 +0000 | [diff] [blame] | 2956 | if (bond->params.arp_interval) |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2957 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); |
| 2958 | |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2959 | if (should_notify_peers || should_notify_rtnl) { |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2960 | if (!rtnl_trylock()) |
| 2961 | return; |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2962 | |
| 2963 | if (should_notify_peers) |
| 2964 | call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, |
| 2965 | bond->dev); |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2966 | if (should_notify_rtnl) { |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2967 | bond_slave_state_notify(bond); |
Jiri Pirko | 5d39706 | 2015-12-03 12:12:19 +0100 | [diff] [blame] | 2968 | bond_slave_link_notify(bond); |
| 2969 | } |
dingtianhong | b092991 | 2014-02-26 11:05:23 +0800 | [diff] [blame] | 2970 | |
David S. Miller | 1f2cd84 | 2013-10-28 00:11:22 -0400 | [diff] [blame] | 2971 | rtnl_unlock(); |
| 2972 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2973 | } |
| 2974 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2975 | /*-------------------------- netdev event handling --------------------------*/ |
| 2976 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 2977 | /* Change device name */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | static int bond_event_changename(struct bonding *bond) |
| 2979 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2980 | bond_remove_proc_entry(bond); |
| 2981 | bond_create_proc_entry(bond); |
Stephen Hemminger | 7e08384 | 2009-06-12 19:02:46 +0000 | [diff] [blame] | 2982 | |
Taku Izumi | f073c7c | 2010-12-09 15:17:13 +0000 | [diff] [blame] | 2983 | bond_debug_reregister(bond); |
| 2984 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2985 | return NOTIFY_DONE; |
| 2986 | } |
| 2987 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2988 | static int bond_master_netdev_event(unsigned long event, |
| 2989 | struct net_device *bond_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2990 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 2991 | struct bonding *event_bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2992 | |
| 2993 | switch (event) { |
| 2994 | case NETDEV_CHANGENAME: |
| 2995 | return bond_event_changename(event_bond); |
Eric W. Biederman | a64d49c | 2012-07-09 10:51:45 +0000 | [diff] [blame] | 2996 | case NETDEV_UNREGISTER: |
| 2997 | bond_remove_proc_entry(event_bond); |
| 2998 | break; |
| 2999 | case NETDEV_REGISTER: |
| 3000 | bond_create_proc_entry(event_bond); |
| 3001 | break; |
nikolay@redhat.com | 6c8d23f | 2013-09-02 13:51:38 +0200 | [diff] [blame] | 3002 | case NETDEV_NOTIFY_PEERS: |
| 3003 | if (event_bond->send_peer_notif) |
| 3004 | event_bond->send_peer_notif--; |
| 3005 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3006 | default: |
| 3007 | break; |
| 3008 | } |
| 3009 | |
| 3010 | return NOTIFY_DONE; |
| 3011 | } |
| 3012 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3013 | static int bond_slave_netdev_event(unsigned long event, |
| 3014 | struct net_device *slave_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3015 | { |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 3016 | struct slave *slave = bond_slave_get_rtnl(slave_dev), *primary; |
nikolay@redhat.com | 6101391 | 2013-04-11 09:18:55 +0000 | [diff] [blame] | 3017 | struct bonding *bond; |
| 3018 | struct net_device *bond_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3019 | |
nikolay@redhat.com | 6101391 | 2013-04-11 09:18:55 +0000 | [diff] [blame] | 3020 | /* A netdev event can be generated while enslaving a device |
| 3021 | * before netdev_rx_handler_register is called in which case |
| 3022 | * slave will be NULL |
| 3023 | */ |
| 3024 | if (!slave) |
| 3025 | return NOTIFY_DONE; |
| 3026 | bond_dev = slave->bond->dev; |
| 3027 | bond = slave->bond; |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 3028 | primary = rtnl_dereference(bond->primary_slave); |
nikolay@redhat.com | 6101391 | 2013-04-11 09:18:55 +0000 | [diff] [blame] | 3029 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3030 | switch (event) { |
| 3031 | case NETDEV_UNREGISTER: |
nikolay@redhat.com | 8d2ada7 | 2013-06-26 17:13:37 +0200 | [diff] [blame] | 3032 | if (bond_dev->type != ARPHRD_ETHER) |
Jiri Pirko | 471cb5a | 2013-01-03 22:49:01 +0000 | [diff] [blame] | 3033 | bond_release_and_destroy(bond_dev, slave_dev); |
| 3034 | else |
| 3035 | bond_release(bond_dev, slave_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3036 | break; |
Weiping Pan | 98f41f6 | 2011-10-31 17:20:48 +0000 | [diff] [blame] | 3037 | case NETDEV_UP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3038 | case NETDEV_CHANGE: |
Jiri Pirko | 471cb5a | 2013-01-03 22:49:01 +0000 | [diff] [blame] | 3039 | bond_update_speed_duplex(slave); |
Mahesh Bandewar | 52bc671 | 2015-10-31 12:45:11 -0700 | [diff] [blame] | 3040 | if (BOND_MODE(bond) == BOND_MODE_8023AD) |
| 3041 | bond_3ad_adapter_speed_duplex_changed(slave); |
Mahesh Bandewar | 950ddcb | 2015-02-19 10:13:25 -0800 | [diff] [blame] | 3042 | /* Fallthrough */ |
| 3043 | case NETDEV_DOWN: |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 3044 | /* Refresh slave-array if applicable! |
| 3045 | * If the setup does not use miimon or arpmon (mode-specific!), |
| 3046 | * then these events will not cause the slave-array to be |
| 3047 | * refreshed. This will cause xmit to use a slave that is not |
| 3048 | * usable. Avoid such situation by refeshing the array at these |
| 3049 | * events. If these (miimon/arpmon) parameters are configured |
| 3050 | * then array gets refreshed twice and that should be fine! |
| 3051 | */ |
| 3052 | if (bond_mode_uses_xmit_hash(bond)) |
| 3053 | bond_update_slave_arr(bond, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3054 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3055 | case NETDEV_CHANGEMTU: |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 3056 | /* TODO: Should slaves be allowed to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3057 | * independently alter their MTU? For |
| 3058 | * an active-backup bond, slaves need |
| 3059 | * not be the same type of device, so |
| 3060 | * MTUs may vary. For other modes, |
| 3061 | * slaves arguably should have the |
| 3062 | * same MTUs. To do this, we'd need to |
| 3063 | * take over the slave's change_mtu |
| 3064 | * function for the duration of their |
| 3065 | * servitude. |
| 3066 | */ |
| 3067 | break; |
| 3068 | case NETDEV_CHANGENAME: |
Veaceslav Falico | 3ec775b | 2014-01-16 02:04:29 +0100 | [diff] [blame] | 3069 | /* we don't care if we don't have primary set */ |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 3070 | if (!bond_uses_primary(bond) || |
Veaceslav Falico | 3ec775b | 2014-01-16 02:04:29 +0100 | [diff] [blame] | 3071 | !bond->params.primary[0]) |
| 3072 | break; |
| 3073 | |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 3074 | if (slave == primary) { |
Veaceslav Falico | 3ec775b | 2014-01-16 02:04:29 +0100 | [diff] [blame] | 3075 | /* slave's name changed - he's no longer primary */ |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 3076 | RCU_INIT_POINTER(bond->primary_slave, NULL); |
Veaceslav Falico | 3ec775b | 2014-01-16 02:04:29 +0100 | [diff] [blame] | 3077 | } else if (!strcmp(slave_dev->name, bond->params.primary)) { |
| 3078 | /* we have a new primary slave */ |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 3079 | rcu_assign_pointer(bond->primary_slave, slave); |
Veaceslav Falico | 3ec775b | 2014-01-16 02:04:29 +0100 | [diff] [blame] | 3080 | } else { /* we didn't change primary - exit */ |
| 3081 | break; |
| 3082 | } |
| 3083 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3084 | netdev_info(bond->dev, "Primary slave changed to %s, reselecting active slave\n", |
Nikolay Aleksandrov | 059b47e | 2014-09-09 23:17:00 +0200 | [diff] [blame] | 3085 | primary ? slave_dev->name : "none"); |
dingtianhong | f80889a | 2014-02-12 12:06:40 +0800 | [diff] [blame] | 3086 | |
| 3087 | block_netpoll_tx(); |
Veaceslav Falico | 3ec775b | 2014-01-16 02:04:29 +0100 | [diff] [blame] | 3088 | bond_select_active_slave(bond); |
dingtianhong | f80889a | 2014-02-12 12:06:40 +0800 | [diff] [blame] | 3089 | unblock_netpoll_tx(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3090 | break; |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 3091 | case NETDEV_FEAT_CHANGE: |
| 3092 | bond_compute_features(bond); |
| 3093 | break; |
Jiri Pirko | 4aa5dee | 2013-07-20 12:13:53 +0200 | [diff] [blame] | 3094 | case NETDEV_RESEND_IGMP: |
| 3095 | /* Propagate to master device */ |
| 3096 | call_netdevice_notifiers(event, slave->bond->dev); |
| 3097 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3098 | default: |
| 3099 | break; |
| 3100 | } |
| 3101 | |
| 3102 | return NOTIFY_DONE; |
| 3103 | } |
| 3104 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 3105 | /* bond_netdev_event: handle netdev notifier chain events. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3106 | * |
| 3107 | * This function receives events for the netdev chain. The caller (an |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 3108 | * ioctl handler calling blocking_notifier_call_chain) holds the necessary |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3109 | * locks for us to safely manipulate the slave devices (RTNL lock, |
| 3110 | * dev_probe_lock). |
| 3111 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3112 | static int bond_netdev_event(struct notifier_block *this, |
| 3113 | unsigned long event, void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3114 | { |
Jiri Pirko | 351638e | 2013-05-28 01:30:21 +0000 | [diff] [blame] | 3115 | struct net_device *event_dev = netdev_notifier_info_to_dev(ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3116 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3117 | netdev_dbg(event_dev, "event: %lx\n", event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3118 | |
Jay Vosburgh | 0b680e7 | 2006-09-22 21:54:10 -0700 | [diff] [blame] | 3119 | if (!(event_dev->priv_flags & IFF_BONDING)) |
| 3120 | return NOTIFY_DONE; |
| 3121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3122 | if (event_dev->flags & IFF_MASTER) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3123 | netdev_dbg(event_dev, "IFF_MASTER\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3124 | return bond_master_netdev_event(event, event_dev); |
| 3125 | } |
| 3126 | |
| 3127 | if (event_dev->flags & IFF_SLAVE) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3128 | netdev_dbg(event_dev, "IFF_SLAVE\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3129 | return bond_slave_netdev_event(event, event_dev); |
| 3130 | } |
| 3131 | |
| 3132 | return NOTIFY_DONE; |
| 3133 | } |
| 3134 | |
| 3135 | static struct notifier_block bond_netdev_notifier = { |
| 3136 | .notifier_call = bond_netdev_event, |
| 3137 | }; |
| 3138 | |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 3139 | /*---------------------------- Hashing Policies -----------------------------*/ |
| 3140 | |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3141 | /* L2 hash helper */ |
| 3142 | static inline u32 bond_eth_hash(struct sk_buff *skb) |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 3143 | { |
Jianhua Xie | ce04d63 | 2014-07-17 14:16:25 +0800 | [diff] [blame] | 3144 | struct ethhdr *ep, hdr_tmp; |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 3145 | |
Jianhua Xie | ce04d63 | 2014-07-17 14:16:25 +0800 | [diff] [blame] | 3146 | ep = skb_header_pointer(skb, 0, sizeof(hdr_tmp), &hdr_tmp); |
| 3147 | if (ep) |
| 3148 | return ep->h_dest[5] ^ ep->h_source[5] ^ ep->h_proto; |
John Eaglesham | 6b923cb | 2012-08-21 20:43:35 +0000 | [diff] [blame] | 3149 | return 0; |
| 3150 | } |
| 3151 | |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3152 | /* Extract the appropriate headers based on bond's xmit policy */ |
| 3153 | static bool bond_flow_dissect(struct bonding *bond, struct sk_buff *skb, |
| 3154 | struct flow_keys *fk) |
John Eaglesham | 6b923cb | 2012-08-21 20:43:35 +0000 | [diff] [blame] | 3155 | { |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3156 | const struct ipv6hdr *iph6; |
Eric Dumazet | 4394542 | 2013-04-15 17:03:24 +0000 | [diff] [blame] | 3157 | const struct iphdr *iph; |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3158 | int noff, proto = -1; |
John Eaglesham | 6b923cb | 2012-08-21 20:43:35 +0000 | [diff] [blame] | 3159 | |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3160 | if (bond->params.xmit_policy > BOND_XMIT_POLICY_LAYER23) |
Tom Herbert | cd79a23 | 2015-09-01 09:24:27 -0700 | [diff] [blame] | 3161 | return skb_flow_dissect_flow_keys(skb, fk, 0); |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3162 | |
Jiri Pirko | 06635a3 | 2015-05-12 14:56:16 +0200 | [diff] [blame] | 3163 | fk->ports.ports = 0; |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3164 | noff = skb_network_offset(skb); |
| 3165 | if (skb->protocol == htons(ETH_P_IP)) { |
dingtianhong | 054bb88 | 2014-03-25 17:00:09 +0800 | [diff] [blame] | 3166 | if (unlikely(!pskb_may_pull(skb, noff + sizeof(*iph)))) |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3167 | return false; |
John Eaglesham | 6b923cb | 2012-08-21 20:43:35 +0000 | [diff] [blame] | 3168 | iph = ip_hdr(skb); |
Tom Herbert | c3f8324 | 2015-06-04 09:16:40 -0700 | [diff] [blame] | 3169 | iph_to_flow_copy_v4addrs(fk, iph); |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3170 | noff += iph->ihl << 2; |
| 3171 | if (!ip_is_fragment(iph)) |
| 3172 | proto = iph->protocol; |
| 3173 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
dingtianhong | 054bb88 | 2014-03-25 17:00:09 +0800 | [diff] [blame] | 3174 | if (unlikely(!pskb_may_pull(skb, noff + sizeof(*iph6)))) |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3175 | return false; |
| 3176 | iph6 = ipv6_hdr(skb); |
Tom Herbert | c3f8324 | 2015-06-04 09:16:40 -0700 | [diff] [blame] | 3177 | iph_to_flow_copy_v6addrs(fk, iph6); |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3178 | noff += sizeof(*iph6); |
| 3179 | proto = iph6->nexthdr; |
| 3180 | } else { |
| 3181 | return false; |
John Eaglesham | 6b923cb | 2012-08-21 20:43:35 +0000 | [diff] [blame] | 3182 | } |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3183 | if (bond->params.xmit_policy == BOND_XMIT_POLICY_LAYER34 && proto >= 0) |
Jiri Pirko | 06635a3 | 2015-05-12 14:56:16 +0200 | [diff] [blame] | 3184 | fk->ports.ports = skb_flow_get_ports(skb, noff, proto); |
John Eaglesham | 6b923cb | 2012-08-21 20:43:35 +0000 | [diff] [blame] | 3185 | |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3186 | return true; |
John Eaglesham | 6b923cb | 2012-08-21 20:43:35 +0000 | [diff] [blame] | 3187 | } |
| 3188 | |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3189 | /** |
| 3190 | * bond_xmit_hash - generate a hash value based on the xmit policy |
| 3191 | * @bond: bonding device |
| 3192 | * @skb: buffer to use for headers |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3193 | * |
| 3194 | * This function will extract the necessary headers from the skb buffer and use |
| 3195 | * them to generate a hash based on the xmit_policy set in the bonding device |
John Eaglesham | 6b923cb | 2012-08-21 20:43:35 +0000 | [diff] [blame] | 3196 | */ |
Mahesh Bandewar | ee62e86 | 2014-04-22 16:30:15 -0700 | [diff] [blame] | 3197 | u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb) |
John Eaglesham | 6b923cb | 2012-08-21 20:43:35 +0000 | [diff] [blame] | 3198 | { |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3199 | struct flow_keys flow; |
| 3200 | u32 hash; |
John Eaglesham | 6b923cb | 2012-08-21 20:43:35 +0000 | [diff] [blame] | 3201 | |
Eric Dumazet | 4b1b865 | 2015-09-15 15:24:28 -0700 | [diff] [blame] | 3202 | if (bond->params.xmit_policy == BOND_XMIT_POLICY_ENCAP34 && |
| 3203 | skb->l4_hash) |
| 3204 | return skb->hash; |
| 3205 | |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3206 | if (bond->params.xmit_policy == BOND_XMIT_POLICY_LAYER2 || |
| 3207 | !bond_flow_dissect(bond, skb, &flow)) |
Mahesh Bandewar | ee62e86 | 2014-04-22 16:30:15 -0700 | [diff] [blame] | 3208 | return bond_eth_hash(skb); |
Eric Dumazet | 4394542 | 2013-04-15 17:03:24 +0000 | [diff] [blame] | 3209 | |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3210 | if (bond->params.xmit_policy == BOND_XMIT_POLICY_LAYER23 || |
| 3211 | bond->params.xmit_policy == BOND_XMIT_POLICY_ENCAP23) |
| 3212 | hash = bond_eth_hash(skb); |
| 3213 | else |
Jiri Pirko | 06635a3 | 2015-05-12 14:56:16 +0200 | [diff] [blame] | 3214 | hash = (__force u32)flow.ports.ports; |
Tom Herbert | c3f8324 | 2015-06-04 09:16:40 -0700 | [diff] [blame] | 3215 | hash ^= (__force u32)flow_get_u32_dst(&flow) ^ |
| 3216 | (__force u32)flow_get_u32_src(&flow); |
Nikolay Aleksandrov | 32819dc | 2013-10-02 13:39:25 +0200 | [diff] [blame] | 3217 | hash ^= (hash >> 16); |
| 3218 | hash ^= (hash >> 8); |
John Eaglesham | 6b923cb | 2012-08-21 20:43:35 +0000 | [diff] [blame] | 3219 | |
Mahesh Bandewar | ee62e86 | 2014-04-22 16:30:15 -0700 | [diff] [blame] | 3220 | return hash; |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 3221 | } |
| 3222 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3223 | /*-------------------------- Device entry points ----------------------------*/ |
| 3224 | |
nikolay@redhat.com | fbb0c41 | 2012-11-29 01:31:31 +0000 | [diff] [blame] | 3225 | static void bond_work_init_all(struct bonding *bond) |
| 3226 | { |
| 3227 | INIT_DELAYED_WORK(&bond->mcast_work, |
| 3228 | bond_resend_igmp_join_requests_delayed); |
| 3229 | INIT_DELAYED_WORK(&bond->alb_work, bond_alb_monitor); |
| 3230 | INIT_DELAYED_WORK(&bond->mii_work, bond_mii_monitor); |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 3231 | if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP) |
nikolay@redhat.com | fbb0c41 | 2012-11-29 01:31:31 +0000 | [diff] [blame] | 3232 | INIT_DELAYED_WORK(&bond->arp_work, bond_activebackup_arp_mon); |
| 3233 | else |
| 3234 | INIT_DELAYED_WORK(&bond->arp_work, bond_loadbalance_arp_mon); |
| 3235 | INIT_DELAYED_WORK(&bond->ad_work, bond_3ad_state_machine_handler); |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 3236 | INIT_DELAYED_WORK(&bond->slave_arr_work, bond_slave_arr_handler); |
nikolay@redhat.com | fbb0c41 | 2012-11-29 01:31:31 +0000 | [diff] [blame] | 3237 | } |
| 3238 | |
| 3239 | static void bond_work_cancel_all(struct bonding *bond) |
| 3240 | { |
| 3241 | cancel_delayed_work_sync(&bond->mii_work); |
| 3242 | cancel_delayed_work_sync(&bond->arp_work); |
| 3243 | cancel_delayed_work_sync(&bond->alb_work); |
| 3244 | cancel_delayed_work_sync(&bond->ad_work); |
| 3245 | cancel_delayed_work_sync(&bond->mcast_work); |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 3246 | cancel_delayed_work_sync(&bond->slave_arr_work); |
nikolay@redhat.com | fbb0c41 | 2012-11-29 01:31:31 +0000 | [diff] [blame] | 3247 | } |
| 3248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3249 | static int bond_open(struct net_device *bond_dev) |
| 3250 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3251 | struct bonding *bond = netdev_priv(bond_dev); |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3252 | struct list_head *iter; |
Peter Pan(潘卫平) | ba3211c | 2011-08-15 15:57:35 +0000 | [diff] [blame] | 3253 | struct slave *slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3254 | |
Peter Pan(潘卫平) | ba3211c | 2011-08-15 15:57:35 +0000 | [diff] [blame] | 3255 | /* reset slave->backup and slave->inactive */ |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 3256 | if (bond_has_slaves(bond)) { |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3257 | bond_for_each_slave(bond, slave, iter) { |
Eric Dumazet | 4740d63 | 2014-07-15 06:56:55 -0700 | [diff] [blame] | 3258 | if (bond_uses_primary(bond) && |
| 3259 | slave != rcu_access_pointer(bond->curr_active_slave)) { |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 3260 | bond_set_slave_inactive_flags(slave, |
| 3261 | BOND_SLAVE_NOTIFY_NOW); |
Wilson Kok | 8bbe71a | 2015-01-26 01:16:58 -0500 | [diff] [blame] | 3262 | } else if (BOND_MODE(bond) != BOND_MODE_8023AD) { |
dingtianhong | 5e5b066 | 2014-02-26 11:05:22 +0800 | [diff] [blame] | 3263 | bond_set_slave_active_flags(slave, |
| 3264 | BOND_SLAVE_NOTIFY_NOW); |
Peter Pan(潘卫平) | ba3211c | 2011-08-15 15:57:35 +0000 | [diff] [blame] | 3265 | } |
| 3266 | } |
Peter Pan(潘卫平) | ba3211c | 2011-08-15 15:57:35 +0000 | [diff] [blame] | 3267 | } |
Peter Pan(潘卫平) | ba3211c | 2011-08-15 15:57:35 +0000 | [diff] [blame] | 3268 | |
nikolay@redhat.com | fbb0c41 | 2012-11-29 01:31:31 +0000 | [diff] [blame] | 3269 | bond_work_init_all(bond); |
Flavio Leitner | 5a37e8c | 2010-10-05 14:23:57 +0000 | [diff] [blame] | 3270 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 3271 | if (bond_is_lb(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3272 | /* bond_alb_initialize must be called before the timer |
| 3273 | * is started. |
| 3274 | */ |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 3275 | if (bond_alb_initialize(bond, (BOND_MODE(bond) == BOND_MODE_ALB))) |
stephen hemminger | b473946 | 2010-01-25 23:34:15 +0000 | [diff] [blame] | 3276 | return -ENOMEM; |
Mahesh Bandewar | e9f0fb8 | 2014-04-22 16:30:22 -0700 | [diff] [blame] | 3277 | if (bond->params.tlb_dynamic_lb) |
| 3278 | queue_delayed_work(bond->wq, &bond->alb_work, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3279 | } |
| 3280 | |
nikolay@redhat.com | fbb0c41 | 2012-11-29 01:31:31 +0000 | [diff] [blame] | 3281 | if (bond->params.miimon) /* link check interval, in milliseconds. */ |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 3282 | queue_delayed_work(bond->wq, &bond->mii_work, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3283 | |
| 3284 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 3285 | queue_delayed_work(bond->wq, &bond->arp_work, 0); |
Veaceslav Falico | 3fe68df | 2014-02-18 07:48:39 +0100 | [diff] [blame] | 3286 | bond->recv_probe = bond_arp_rcv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3287 | } |
| 3288 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 3289 | if (BOND_MODE(bond) == BOND_MODE_8023AD) { |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 3290 | queue_delayed_work(bond->wq, &bond->ad_work, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3291 | /* register to receive LACPDUs */ |
Jiri Pirko | 3aba891 | 2011-04-19 03:48:16 +0000 | [diff] [blame] | 3292 | bond->recv_probe = bond_3ad_lacpdu_recv; |
Jay Vosburgh | fd989c8 | 2008-11-04 17:51:16 -0800 | [diff] [blame] | 3293 | bond_3ad_initiate_agg_selection(bond, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3294 | } |
| 3295 | |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 3296 | if (bond_mode_uses_xmit_hash(bond)) |
| 3297 | bond_update_slave_arr(bond, NULL); |
| 3298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3299 | return 0; |
| 3300 | } |
| 3301 | |
| 3302 | static int bond_close(struct net_device *bond_dev) |
| 3303 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3304 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3305 | |
nikolay@redhat.com | fbb0c41 | 2012-11-29 01:31:31 +0000 | [diff] [blame] | 3306 | bond_work_cancel_all(bond); |
nikolay@redhat.com | 6c8d23f | 2013-09-02 13:51:38 +0200 | [diff] [blame] | 3307 | bond->send_peer_notif = 0; |
nikolay@redhat.com | ee8487c | 2013-09-02 13:51:39 +0200 | [diff] [blame] | 3308 | if (bond_is_lb(bond)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3309 | bond_alb_deinitialize(bond); |
Jiri Pirko | 3aba891 | 2011-04-19 03:48:16 +0000 | [diff] [blame] | 3310 | bond->recv_probe = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3311 | |
| 3312 | return 0; |
| 3313 | } |
| 3314 | |
Eric Dumazet | fe30937 | 2016-03-17 17:23:36 -0700 | [diff] [blame] | 3315 | /* fold stats, assuming all rtnl_link_stats64 fields are u64, but |
| 3316 | * that some drivers can provide 32bit values only. |
| 3317 | */ |
| 3318 | static void bond_fold_stats(struct rtnl_link_stats64 *_res, |
| 3319 | const struct rtnl_link_stats64 *_new, |
| 3320 | const struct rtnl_link_stats64 *_old) |
| 3321 | { |
| 3322 | const u64 *new = (const u64 *)_new; |
| 3323 | const u64 *old = (const u64 *)_old; |
| 3324 | u64 *res = (u64 *)_res; |
| 3325 | int i; |
| 3326 | |
| 3327 | for (i = 0; i < sizeof(*_res) / sizeof(u64); i++) { |
| 3328 | u64 nv = new[i]; |
| 3329 | u64 ov = old[i]; |
| 3330 | |
| 3331 | /* detects if this particular field is 32bit only */ |
| 3332 | if (((nv | ov) >> 32) == 0) |
| 3333 | res[i] += (u32)nv - (u32)ov; |
| 3334 | else |
| 3335 | res[i] += nv - ov; |
| 3336 | } |
| 3337 | } |
| 3338 | |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 3339 | static struct rtnl_link_stats64 *bond_get_stats(struct net_device *bond_dev, |
| 3340 | struct rtnl_link_stats64 *stats) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3341 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3342 | struct bonding *bond = netdev_priv(bond_dev); |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 3343 | struct rtnl_link_stats64 temp; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3344 | struct list_head *iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3345 | struct slave *slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3346 | |
Eric Dumazet | fe30937 | 2016-03-17 17:23:36 -0700 | [diff] [blame] | 3347 | spin_lock(&bond->stats_lock); |
Andy Gospodarek | 5f0c5f7 | 2014-09-28 22:34:37 -0400 | [diff] [blame] | 3348 | memcpy(stats, &bond->bond_stats, sizeof(*stats)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3349 | |
Eric Dumazet | fe30937 | 2016-03-17 17:23:36 -0700 | [diff] [blame] | 3350 | rcu_read_lock(); |
| 3351 | bond_for_each_slave_rcu(bond, slave, iter) { |
| 3352 | const struct rtnl_link_stats64 *new = |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 3353 | dev_get_stats(slave->dev, &temp); |
Stephen Hemminger | eeda3fd | 2008-11-19 21:40:23 -0800 | [diff] [blame] | 3354 | |
Eric Dumazet | fe30937 | 2016-03-17 17:23:36 -0700 | [diff] [blame] | 3355 | bond_fold_stats(stats, new, &slave->slave_stats); |
Andy Gospodarek | 5f0c5f7 | 2014-09-28 22:34:37 -0400 | [diff] [blame] | 3356 | |
| 3357 | /* save off the slave stats for the next run */ |
Eric Dumazet | fe30937 | 2016-03-17 17:23:36 -0700 | [diff] [blame] | 3358 | memcpy(&slave->slave_stats, new, sizeof(*new)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3359 | } |
Eric Dumazet | fe30937 | 2016-03-17 17:23:36 -0700 | [diff] [blame] | 3360 | rcu_read_unlock(); |
| 3361 | |
Andy Gospodarek | 5f0c5f7 | 2014-09-28 22:34:37 -0400 | [diff] [blame] | 3362 | memcpy(&bond->bond_stats, stats, sizeof(*stats)); |
Eric Dumazet | fe30937 | 2016-03-17 17:23:36 -0700 | [diff] [blame] | 3363 | spin_unlock(&bond->stats_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3364 | |
| 3365 | return stats; |
| 3366 | } |
| 3367 | |
| 3368 | static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd) |
| 3369 | { |
Jiri Pirko | 080a06e | 2013-10-18 17:43:36 +0200 | [diff] [blame] | 3370 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3371 | struct net_device *slave_dev = NULL; |
| 3372 | struct ifbond k_binfo; |
| 3373 | struct ifbond __user *u_binfo = NULL; |
| 3374 | struct ifslave k_sinfo; |
| 3375 | struct ifslave __user *u_sinfo = NULL; |
| 3376 | struct mii_ioctl_data *mii = NULL; |
Nikolay Aleksandrov | d1fbd3e | 2014-01-22 14:53:35 +0100 | [diff] [blame] | 3377 | struct bond_opt_value newval; |
Gao feng | 387ff911 | 2013-01-31 16:31:00 +0000 | [diff] [blame] | 3378 | struct net *net; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3379 | int res = 0; |
| 3380 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3381 | netdev_dbg(bond_dev, "bond_ioctl: cmd=%d\n", cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3382 | |
| 3383 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3384 | case SIOCGMIIPHY: |
| 3385 | mii = if_mii(ifr); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3386 | if (!mii) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3387 | return -EINVAL; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3388 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3389 | mii->phy_id = 0; |
| 3390 | /* Fall Through */ |
| 3391 | case SIOCGMIIREG: |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 3392 | /* We do this again just in case we were called by SIOCGMIIREG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3393 | * instead of SIOCGMIIPHY. |
| 3394 | */ |
| 3395 | mii = if_mii(ifr); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3396 | if (!mii) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3397 | return -EINVAL; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3398 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3399 | if (mii->reg_num == 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3400 | mii->val_out = 0; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3401 | if (netif_carrier_ok(bond->dev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3402 | mii->val_out = BMSR_LSTATUS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3403 | } |
| 3404 | |
| 3405 | return 0; |
| 3406 | case BOND_INFO_QUERY_OLD: |
| 3407 | case SIOCBONDINFOQUERY: |
| 3408 | u_binfo = (struct ifbond __user *)ifr->ifr_data; |
| 3409 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3410 | if (copy_from_user(&k_binfo, u_binfo, sizeof(ifbond))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3411 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3412 | |
| 3413 | res = bond_info_query(bond_dev, &k_binfo); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3414 | if (res == 0 && |
| 3415 | copy_to_user(u_binfo, &k_binfo, sizeof(ifbond))) |
| 3416 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3417 | |
| 3418 | return res; |
| 3419 | case BOND_SLAVE_INFO_QUERY_OLD: |
| 3420 | case SIOCBONDSLAVEINFOQUERY: |
| 3421 | u_sinfo = (struct ifslave __user *)ifr->ifr_data; |
| 3422 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3423 | if (copy_from_user(&k_sinfo, u_sinfo, sizeof(ifslave))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3424 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3425 | |
| 3426 | res = bond_slave_info_query(bond_dev, &k_sinfo); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3427 | if (res == 0 && |
| 3428 | copy_to_user(u_sinfo, &k_sinfo, sizeof(ifslave))) |
| 3429 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3430 | |
| 3431 | return res; |
| 3432 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3433 | break; |
| 3434 | } |
| 3435 | |
Gao feng | 387ff911 | 2013-01-31 16:31:00 +0000 | [diff] [blame] | 3436 | net = dev_net(bond_dev); |
| 3437 | |
| 3438 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3439 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3440 | |
Ying Xue | 0917b93 | 2014-01-15 10:23:37 +0800 | [diff] [blame] | 3441 | slave_dev = __dev_get_by_name(net, ifr->ifr_slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3442 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3443 | netdev_dbg(bond_dev, "slave_dev=%p:\n", slave_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3444 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3445 | if (!slave_dev) |
Ying Xue | 0917b93 | 2014-01-15 10:23:37 +0800 | [diff] [blame] | 3446 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3447 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3448 | netdev_dbg(bond_dev, "slave_dev->name=%s:\n", slave_dev->name); |
Ying Xue | 0917b93 | 2014-01-15 10:23:37 +0800 | [diff] [blame] | 3449 | switch (cmd) { |
| 3450 | case BOND_ENSLAVE_OLD: |
| 3451 | case SIOCBONDENSLAVE: |
| 3452 | res = bond_enslave(bond_dev, slave_dev); |
| 3453 | break; |
| 3454 | case BOND_RELEASE_OLD: |
| 3455 | case SIOCBONDRELEASE: |
| 3456 | res = bond_release(bond_dev, slave_dev); |
| 3457 | break; |
| 3458 | case BOND_SETHWADDR_OLD: |
| 3459 | case SIOCBONDSETHWADDR: |
| 3460 | bond_set_dev_addr(bond_dev, slave_dev); |
| 3461 | res = 0; |
| 3462 | break; |
| 3463 | case BOND_CHANGE_ACTIVE_OLD: |
| 3464 | case SIOCBONDCHANGEACTIVE: |
Nikolay Aleksandrov | d1fbd3e | 2014-01-22 14:53:35 +0100 | [diff] [blame] | 3465 | bond_opt_initstr(&newval, slave_dev->name); |
| 3466 | res = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval); |
Ying Xue | 0917b93 | 2014-01-15 10:23:37 +0800 | [diff] [blame] | 3467 | break; |
| 3468 | default: |
| 3469 | res = -EOPNOTSUPP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3470 | } |
| 3471 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3472 | return res; |
| 3473 | } |
| 3474 | |
Jiri Pirko | d03462b | 2011-08-16 03:15:04 +0000 | [diff] [blame] | 3475 | static void bond_change_rx_flags(struct net_device *bond_dev, int change) |
| 3476 | { |
| 3477 | struct bonding *bond = netdev_priv(bond_dev); |
| 3478 | |
| 3479 | if (change & IFF_PROMISC) |
| 3480 | bond_set_promiscuity(bond, |
| 3481 | bond_dev->flags & IFF_PROMISC ? 1 : -1); |
| 3482 | |
| 3483 | if (change & IFF_ALLMULTI) |
| 3484 | bond_set_allmulti(bond, |
| 3485 | bond_dev->flags & IFF_ALLMULTI ? 1 : -1); |
| 3486 | } |
| 3487 | |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 3488 | static void bond_set_rx_mode(struct net_device *bond_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3489 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3490 | struct bonding *bond = netdev_priv(bond_dev); |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3491 | struct list_head *iter; |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 3492 | struct slave *slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3493 | |
Veaceslav Falico | b324187 | 2013-09-28 21:18:56 +0200 | [diff] [blame] | 3494 | rcu_read_lock(); |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 3495 | if (bond_uses_primary(bond)) { |
Veaceslav Falico | b324187 | 2013-09-28 21:18:56 +0200 | [diff] [blame] | 3496 | slave = rcu_dereference(bond->curr_active_slave); |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 3497 | if (slave) { |
| 3498 | dev_uc_sync(slave->dev, bond_dev); |
| 3499 | dev_mc_sync(slave->dev, bond_dev); |
| 3500 | } |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 3501 | } else { |
Veaceslav Falico | b324187 | 2013-09-28 21:18:56 +0200 | [diff] [blame] | 3502 | bond_for_each_slave_rcu(bond, slave, iter) { |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 3503 | dev_uc_sync_multiple(slave->dev, bond_dev); |
| 3504 | dev_mc_sync_multiple(slave->dev, bond_dev); |
| 3505 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3506 | } |
Veaceslav Falico | b324187 | 2013-09-28 21:18:56 +0200 | [diff] [blame] | 3507 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3508 | } |
| 3509 | |
Shlomo Pongratz | 234bcf8 | 2012-04-03 22:56:20 +0000 | [diff] [blame] | 3510 | static int bond_neigh_init(struct neighbour *n) |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 3511 | { |
Shlomo Pongratz | 234bcf8 | 2012-04-03 22:56:20 +0000 | [diff] [blame] | 3512 | struct bonding *bond = netdev_priv(n->dev); |
Shlomo Pongratz | 234bcf8 | 2012-04-03 22:56:20 +0000 | [diff] [blame] | 3513 | const struct net_device_ops *slave_ops; |
| 3514 | struct neigh_parms parms; |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 3515 | struct slave *slave; |
Shlomo Pongratz | 234bcf8 | 2012-04-03 22:56:20 +0000 | [diff] [blame] | 3516 | int ret; |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 3517 | |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 3518 | slave = bond_first_slave(bond); |
Shlomo Pongratz | 234bcf8 | 2012-04-03 22:56:20 +0000 | [diff] [blame] | 3519 | if (!slave) |
| 3520 | return 0; |
Shlomo Pongratz | 234bcf8 | 2012-04-03 22:56:20 +0000 | [diff] [blame] | 3521 | slave_ops = slave->dev->netdev_ops; |
Shlomo Pongratz | 234bcf8 | 2012-04-03 22:56:20 +0000 | [diff] [blame] | 3522 | if (!slave_ops->ndo_neigh_setup) |
| 3523 | return 0; |
| 3524 | |
| 3525 | parms.neigh_setup = NULL; |
| 3526 | parms.neigh_cleanup = NULL; |
| 3527 | ret = slave_ops->ndo_neigh_setup(slave->dev, &parms); |
| 3528 | if (ret) |
| 3529 | return ret; |
| 3530 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 3531 | /* Assign slave's neigh_cleanup to neighbour in case cleanup is called |
Shlomo Pongratz | 234bcf8 | 2012-04-03 22:56:20 +0000 | [diff] [blame] | 3532 | * after the last slave has been detached. Assumes that all slaves |
| 3533 | * utilize the same neigh_cleanup (true at this writing as only user |
| 3534 | * is ipoib). |
| 3535 | */ |
| 3536 | n->parms->neigh_cleanup = parms.neigh_cleanup; |
| 3537 | |
| 3538 | if (!parms.neigh_setup) |
| 3539 | return 0; |
| 3540 | |
| 3541 | return parms.neigh_setup(n); |
| 3542 | } |
| 3543 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 3544 | /* The bonding ndo_neigh_setup is called at init time beofre any |
Shlomo Pongratz | 234bcf8 | 2012-04-03 22:56:20 +0000 | [diff] [blame] | 3545 | * slave exists. So we must declare proxy setup function which will |
| 3546 | * be used at run time to resolve the actual slave neigh param setup. |
Veaceslav Falico | 9918d5b | 2013-08-02 19:07:39 +0200 | [diff] [blame] | 3547 | * |
| 3548 | * It's also called by master devices (such as vlans) to setup their |
| 3549 | * underlying devices. In that case - do nothing, we're already set up from |
| 3550 | * our init. |
Shlomo Pongratz | 234bcf8 | 2012-04-03 22:56:20 +0000 | [diff] [blame] | 3551 | */ |
| 3552 | static int bond_neigh_setup(struct net_device *dev, |
| 3553 | struct neigh_parms *parms) |
| 3554 | { |
Veaceslav Falico | 9918d5b | 2013-08-02 19:07:39 +0200 | [diff] [blame] | 3555 | /* modify only our neigh_parms */ |
| 3556 | if (parms->dev == dev) |
| 3557 | parms->neigh_setup = bond_neigh_init; |
Shlomo Pongratz | 234bcf8 | 2012-04-03 22:56:20 +0000 | [diff] [blame] | 3558 | |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 3559 | return 0; |
| 3560 | } |
| 3561 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 3562 | /* Change the MTU of all of a master's slaves to match the master */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3563 | static int bond_change_mtu(struct net_device *bond_dev, int new_mtu) |
| 3564 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3565 | struct bonding *bond = netdev_priv(bond_dev); |
Veaceslav Falico | 81f23b1 | 2013-09-25 09:20:13 +0200 | [diff] [blame] | 3566 | struct slave *slave, *rollback_slave; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3567 | struct list_head *iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3568 | int res = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3569 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3570 | netdev_dbg(bond_dev, "bond=%p, new_mtu=%d\n", bond, new_mtu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3571 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3572 | bond_for_each_slave(bond, slave, iter) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3573 | netdev_dbg(bond_dev, "s %p c_m %p\n", |
| 3574 | slave, slave->dev->netdev_ops->ndo_change_mtu); |
Mitch Williams | e944ef7 | 2005-11-09 10:36:50 -0800 | [diff] [blame] | 3575 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3576 | res = dev_set_mtu(slave->dev, new_mtu); |
| 3577 | |
| 3578 | if (res) { |
| 3579 | /* If we failed to set the slave's mtu to the new value |
| 3580 | * we must abort the operation even in ACTIVE_BACKUP |
| 3581 | * mode, because if we allow the backup slaves to have |
| 3582 | * different mtu values than the active slave we'll |
| 3583 | * need to change their mtu when doing a failover. That |
| 3584 | * means changing their mtu from timer context, which |
| 3585 | * is probably not a good idea. |
| 3586 | */ |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3587 | netdev_dbg(bond_dev, "err %d %s\n", res, |
| 3588 | slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3589 | goto unwind; |
| 3590 | } |
| 3591 | } |
| 3592 | |
| 3593 | bond_dev->mtu = new_mtu; |
| 3594 | |
| 3595 | return 0; |
| 3596 | |
| 3597 | unwind: |
| 3598 | /* unwind from head to the slave that failed */ |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3599 | bond_for_each_slave(bond, rollback_slave, iter) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3600 | int tmp_res; |
| 3601 | |
Veaceslav Falico | 81f23b1 | 2013-09-25 09:20:13 +0200 | [diff] [blame] | 3602 | if (rollback_slave == slave) |
| 3603 | break; |
| 3604 | |
| 3605 | tmp_res = dev_set_mtu(rollback_slave->dev, bond_dev->mtu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3606 | if (tmp_res) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3607 | netdev_dbg(bond_dev, "unwind err %d dev %s\n", |
| 3608 | tmp_res, rollback_slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3609 | } |
| 3610 | } |
| 3611 | |
| 3612 | return res; |
| 3613 | } |
| 3614 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 3615 | /* Change HW address |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3616 | * |
| 3617 | * Note that many devices must be down to change the HW address, and |
| 3618 | * downing the master releases all slaves. We can make bonds full of |
| 3619 | * bonding devices to test this, however. |
| 3620 | */ |
| 3621 | static int bond_set_mac_address(struct net_device *bond_dev, void *addr) |
| 3622 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3623 | struct bonding *bond = netdev_priv(bond_dev); |
Veaceslav Falico | 81f23b1 | 2013-09-25 09:20:13 +0200 | [diff] [blame] | 3624 | struct slave *slave, *rollback_slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3625 | struct sockaddr *sa = addr, tmp_sa; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3626 | struct list_head *iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3627 | int res = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3628 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 3629 | if (BOND_MODE(bond) == BOND_MODE_ALB) |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 3630 | return bond_alb_set_mac_address(bond_dev, addr); |
| 3631 | |
| 3632 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3633 | netdev_dbg(bond_dev, "bond=%p\n", bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3634 | |
Jay Vosburgh | 1b5acd2 | 2013-05-31 11:57:31 +0000 | [diff] [blame] | 3635 | /* If fail_over_mac is enabled, do nothing and return success. |
| 3636 | * Returning an error causes ifenslave to fail. |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 3637 | */ |
dingtianhong | cc689aa | 2014-01-25 13:00:57 +0800 | [diff] [blame] | 3638 | if (bond->params.fail_over_mac && |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 3639 | BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP) |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 3640 | return 0; |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 3641 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3642 | if (!is_valid_ether_addr(sa->sa_data)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3643 | return -EADDRNOTAVAIL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3644 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3645 | bond_for_each_slave(bond, slave, iter) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3646 | netdev_dbg(bond_dev, "slave %p %s\n", slave, slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3647 | res = dev_set_mac_address(slave->dev, addr); |
| 3648 | if (res) { |
| 3649 | /* TODO: consider downing the slave |
| 3650 | * and retry ? |
| 3651 | * User should expect communications |
| 3652 | * breakage anyway until ARP finish |
| 3653 | * updating, so... |
| 3654 | */ |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3655 | netdev_dbg(bond_dev, "err %d %s\n", res, slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3656 | goto unwind; |
| 3657 | } |
| 3658 | } |
| 3659 | |
| 3660 | /* success */ |
| 3661 | memcpy(bond_dev->dev_addr, sa->sa_data, bond_dev->addr_len); |
| 3662 | return 0; |
| 3663 | |
| 3664 | unwind: |
| 3665 | memcpy(tmp_sa.sa_data, bond_dev->dev_addr, bond_dev->addr_len); |
| 3666 | tmp_sa.sa_family = bond_dev->type; |
| 3667 | |
| 3668 | /* unwind from head to the slave that failed */ |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3669 | bond_for_each_slave(bond, rollback_slave, iter) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3670 | int tmp_res; |
| 3671 | |
Veaceslav Falico | 81f23b1 | 2013-09-25 09:20:13 +0200 | [diff] [blame] | 3672 | if (rollback_slave == slave) |
| 3673 | break; |
| 3674 | |
| 3675 | tmp_res = dev_set_mac_address(rollback_slave->dev, &tmp_sa); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3676 | if (tmp_res) { |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 3677 | netdev_dbg(bond_dev, "unwind err %d dev %s\n", |
| 3678 | tmp_res, rollback_slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3679 | } |
| 3680 | } |
| 3681 | |
| 3682 | return res; |
| 3683 | } |
| 3684 | |
Nikolay Aleksandrov | 1507722 | 2013-08-01 16:54:50 +0200 | [diff] [blame] | 3685 | /** |
| 3686 | * bond_xmit_slave_id - transmit skb through slave with slave_id |
| 3687 | * @bond: bonding device that is transmitting |
| 3688 | * @skb: buffer to transmit |
| 3689 | * @slave_id: slave id up to slave_cnt-1 through which to transmit |
| 3690 | * |
| 3691 | * This function tries to transmit through slave with slave_id but in case |
| 3692 | * it fails, it tries to find the first available slave for transmission. |
| 3693 | * The skb is consumed in all cases, thus the function is void. |
| 3694 | */ |
stephen hemminger | da131dd | 2013-12-29 11:41:25 -0800 | [diff] [blame] | 3695 | static void bond_xmit_slave_id(struct bonding *bond, struct sk_buff *skb, int slave_id) |
Nikolay Aleksandrov | 1507722 | 2013-08-01 16:54:50 +0200 | [diff] [blame] | 3696 | { |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3697 | struct list_head *iter; |
Nikolay Aleksandrov | 1507722 | 2013-08-01 16:54:50 +0200 | [diff] [blame] | 3698 | struct slave *slave; |
| 3699 | int i = slave_id; |
| 3700 | |
| 3701 | /* Here we start from the slave with slave_id */ |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3702 | bond_for_each_slave_rcu(bond, slave, iter) { |
Nikolay Aleksandrov | 1507722 | 2013-08-01 16:54:50 +0200 | [diff] [blame] | 3703 | if (--i < 0) { |
Veaceslav Falico | 891ab54 | 2014-05-15 21:39:58 +0200 | [diff] [blame] | 3704 | if (bond_slave_can_tx(slave)) { |
Nikolay Aleksandrov | 1507722 | 2013-08-01 16:54:50 +0200 | [diff] [blame] | 3705 | bond_dev_queue_xmit(bond, skb, slave->dev); |
| 3706 | return; |
| 3707 | } |
| 3708 | } |
| 3709 | } |
| 3710 | |
| 3711 | /* Here we start from the first slave up to slave_id */ |
| 3712 | i = slave_id; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3713 | bond_for_each_slave_rcu(bond, slave, iter) { |
Nikolay Aleksandrov | 1507722 | 2013-08-01 16:54:50 +0200 | [diff] [blame] | 3714 | if (--i < 0) |
| 3715 | break; |
Veaceslav Falico | 891ab54 | 2014-05-15 21:39:58 +0200 | [diff] [blame] | 3716 | if (bond_slave_can_tx(slave)) { |
Nikolay Aleksandrov | 1507722 | 2013-08-01 16:54:50 +0200 | [diff] [blame] | 3717 | bond_dev_queue_xmit(bond, skb, slave->dev); |
| 3718 | return; |
| 3719 | } |
| 3720 | } |
| 3721 | /* no slave that can tx has been found */ |
Eric Dumazet | 31aa860 | 2014-10-31 11:47:54 -0700 | [diff] [blame] | 3722 | bond_tx_drop(bond->dev, skb); |
Nikolay Aleksandrov | 1507722 | 2013-08-01 16:54:50 +0200 | [diff] [blame] | 3723 | } |
| 3724 | |
Nikolay Aleksandrov | 7395832 | 2013-11-05 13:51:41 +0100 | [diff] [blame] | 3725 | /** |
| 3726 | * bond_rr_gen_slave_id - generate slave id based on packets_per_slave |
| 3727 | * @bond: bonding device to use |
| 3728 | * |
| 3729 | * Based on the value of the bonding device's packets_per_slave parameter |
| 3730 | * this function generates a slave id, which is usually used as the next |
| 3731 | * slave to transmit through. |
| 3732 | */ |
| 3733 | static u32 bond_rr_gen_slave_id(struct bonding *bond) |
| 3734 | { |
Nikolay Aleksandrov | 7395832 | 2013-11-05 13:51:41 +0100 | [diff] [blame] | 3735 | u32 slave_id; |
Hannes Frederic Sowa | 809fa97 | 2014-01-22 02:29:41 +0100 | [diff] [blame] | 3736 | struct reciprocal_value reciprocal_packets_per_slave; |
| 3737 | int packets_per_slave = bond->params.packets_per_slave; |
Nikolay Aleksandrov | 7395832 | 2013-11-05 13:51:41 +0100 | [diff] [blame] | 3738 | |
| 3739 | switch (packets_per_slave) { |
| 3740 | case 0: |
| 3741 | slave_id = prandom_u32(); |
| 3742 | break; |
| 3743 | case 1: |
| 3744 | slave_id = bond->rr_tx_counter; |
| 3745 | break; |
| 3746 | default: |
Hannes Frederic Sowa | 809fa97 | 2014-01-22 02:29:41 +0100 | [diff] [blame] | 3747 | reciprocal_packets_per_slave = |
| 3748 | bond->params.reciprocal_packets_per_slave; |
Nikolay Aleksandrov | 7395832 | 2013-11-05 13:51:41 +0100 | [diff] [blame] | 3749 | slave_id = reciprocal_divide(bond->rr_tx_counter, |
Hannes Frederic Sowa | 809fa97 | 2014-01-22 02:29:41 +0100 | [diff] [blame] | 3750 | reciprocal_packets_per_slave); |
Nikolay Aleksandrov | 7395832 | 2013-11-05 13:51:41 +0100 | [diff] [blame] | 3751 | break; |
| 3752 | } |
| 3753 | bond->rr_tx_counter++; |
| 3754 | |
| 3755 | return slave_id; |
| 3756 | } |
| 3757 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3758 | static int bond_xmit_roundrobin(struct sk_buff *skb, struct net_device *bond_dev) |
| 3759 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3760 | struct bonding *bond = netdev_priv(bond_dev); |
Andy Gospodarek | a2fd940 | 2010-03-25 14:49:05 +0000 | [diff] [blame] | 3761 | struct iphdr *iph = ip_hdr(skb); |
Nikolay Aleksandrov | 1507722 | 2013-08-01 16:54:50 +0200 | [diff] [blame] | 3762 | struct slave *slave; |
Nikolay Aleksandrov | 7395832 | 2013-11-05 13:51:41 +0100 | [diff] [blame] | 3763 | u32 slave_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3764 | |
Nikolay Aleksandrov | 7395832 | 2013-11-05 13:51:41 +0100 | [diff] [blame] | 3765 | /* Start with the curr_active_slave that joined the bond as the |
Andy Gospodarek | a2fd940 | 2010-03-25 14:49:05 +0000 | [diff] [blame] | 3766 | * default for sending IGMP traffic. For failover purposes one |
| 3767 | * needs to maintain some consistency for the interface that will |
| 3768 | * send the join/membership reports. The curr_active_slave found |
| 3769 | * will send all of this type of traffic. |
Jay Vosburgh | cf5f904 | 2007-10-17 17:37:47 -0700 | [diff] [blame] | 3770 | */ |
Nikolay Aleksandrov | 1507722 | 2013-08-01 16:54:50 +0200 | [diff] [blame] | 3771 | if (iph->protocol == IPPROTO_IGMP && skb->protocol == htons(ETH_P_IP)) { |
nikolay@redhat.com | 278b208 | 2013-08-01 16:54:51 +0200 | [diff] [blame] | 3772 | slave = rcu_dereference(bond->curr_active_slave); |
dingtianhong | a64d044 | 2014-09-19 21:04:57 +0800 | [diff] [blame] | 3773 | if (slave) |
Nikolay Aleksandrov | 1507722 | 2013-08-01 16:54:50 +0200 | [diff] [blame] | 3774 | bond_dev_queue_xmit(bond, skb, slave->dev); |
| 3775 | else |
| 3776 | bond_xmit_slave_id(bond, skb, 0); |
Andy Gospodarek | a2fd940 | 2010-03-25 14:49:05 +0000 | [diff] [blame] | 3777 | } else { |
Nikolay Aleksandrov | 9a72c2da | 2014-09-12 17:38:18 +0200 | [diff] [blame] | 3778 | int slave_cnt = ACCESS_ONCE(bond->slave_cnt); |
| 3779 | |
| 3780 | if (likely(slave_cnt)) { |
| 3781 | slave_id = bond_rr_gen_slave_id(bond); |
| 3782 | bond_xmit_slave_id(bond, skb, slave_id % slave_cnt); |
| 3783 | } else { |
Eric Dumazet | 31aa860 | 2014-10-31 11:47:54 -0700 | [diff] [blame] | 3784 | bond_tx_drop(bond_dev, skb); |
Nikolay Aleksandrov | 9a72c2da | 2014-09-12 17:38:18 +0200 | [diff] [blame] | 3785 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3786 | } |
Michał Mirosław | 0693e88 | 2011-05-07 01:48:02 +0000 | [diff] [blame] | 3787 | |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 3788 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3789 | } |
| 3790 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 3791 | /* In active-backup mode, we know that bond->curr_active_slave is always valid if |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3792 | * the bond has a usable interface. |
| 3793 | */ |
| 3794 | static int bond_xmit_activebackup(struct sk_buff *skb, struct net_device *bond_dev) |
| 3795 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3796 | struct bonding *bond = netdev_priv(bond_dev); |
nikolay@redhat.com | 71bc3b2 | 2013-08-01 16:54:48 +0200 | [diff] [blame] | 3797 | struct slave *slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3798 | |
nikolay@redhat.com | 278b208 | 2013-08-01 16:54:51 +0200 | [diff] [blame] | 3799 | slave = rcu_dereference(bond->curr_active_slave); |
nikolay@redhat.com | 71bc3b2 | 2013-08-01 16:54:48 +0200 | [diff] [blame] | 3800 | if (slave) |
Nikolay Aleksandrov | 1507722 | 2013-08-01 16:54:50 +0200 | [diff] [blame] | 3801 | bond_dev_queue_xmit(bond, skb, slave->dev); |
| 3802 | else |
Eric Dumazet | 31aa860 | 2014-10-31 11:47:54 -0700 | [diff] [blame] | 3803 | bond_tx_drop(bond_dev, skb); |
Michał Mirosław | 0693e88 | 2011-05-07 01:48:02 +0000 | [diff] [blame] | 3804 | |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 3805 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3806 | } |
| 3807 | |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 3808 | /* Use this to update slave_array when (a) it's not appropriate to update |
| 3809 | * slave_array right away (note that update_slave_array() may sleep) |
| 3810 | * and / or (b) RTNL is not held. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3811 | */ |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 3812 | void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3813 | { |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 3814 | queue_delayed_work(bond->wq, &bond->slave_arr_work, delay); |
| 3815 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3816 | |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 3817 | /* Slave array work handler. Holds only RTNL */ |
| 3818 | static void bond_slave_arr_handler(struct work_struct *work) |
| 3819 | { |
| 3820 | struct bonding *bond = container_of(work, struct bonding, |
| 3821 | slave_arr_work.work); |
| 3822 | int ret; |
| 3823 | |
| 3824 | if (!rtnl_trylock()) |
| 3825 | goto err; |
| 3826 | |
| 3827 | ret = bond_update_slave_arr(bond, NULL); |
| 3828 | rtnl_unlock(); |
| 3829 | if (ret) { |
| 3830 | pr_warn_ratelimited("Failed to update slave array from WT\n"); |
| 3831 | goto err; |
| 3832 | } |
| 3833 | return; |
| 3834 | |
| 3835 | err: |
| 3836 | bond_slave_arr_work_rearm(bond, 1); |
| 3837 | } |
| 3838 | |
| 3839 | /* Build the usable slaves array in control path for modes that use xmit-hash |
| 3840 | * to determine the slave interface - |
| 3841 | * (a) BOND_MODE_8023AD |
| 3842 | * (b) BOND_MODE_XOR |
| 3843 | * (c) BOND_MODE_TLB && tlb_dynamic_lb == 0 |
| 3844 | * |
| 3845 | * The caller is expected to hold RTNL only and NO other lock! |
| 3846 | */ |
| 3847 | int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave) |
| 3848 | { |
| 3849 | struct slave *slave; |
| 3850 | struct list_head *iter; |
| 3851 | struct bond_up_slave *new_arr, *old_arr; |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 3852 | int agg_id = 0; |
| 3853 | int ret = 0; |
| 3854 | |
| 3855 | #ifdef CONFIG_LOCKDEP |
| 3856 | WARN_ON(lockdep_is_held(&bond->mode_lock)); |
| 3857 | #endif |
| 3858 | |
| 3859 | new_arr = kzalloc(offsetof(struct bond_up_slave, arr[bond->slave_cnt]), |
| 3860 | GFP_KERNEL); |
| 3861 | if (!new_arr) { |
| 3862 | ret = -ENOMEM; |
| 3863 | pr_err("Failed to build slave-array.\n"); |
| 3864 | goto out; |
| 3865 | } |
| 3866 | if (BOND_MODE(bond) == BOND_MODE_8023AD) { |
| 3867 | struct ad_info ad_info; |
| 3868 | |
| 3869 | if (bond_3ad_get_active_agg_info(bond, &ad_info)) { |
| 3870 | pr_debug("bond_3ad_get_active_agg_info failed\n"); |
| 3871 | kfree_rcu(new_arr, rcu); |
| 3872 | /* No active aggragator means it's not safe to use |
| 3873 | * the previous array. |
| 3874 | */ |
| 3875 | old_arr = rtnl_dereference(bond->slave_arr); |
| 3876 | if (old_arr) { |
| 3877 | RCU_INIT_POINTER(bond->slave_arr, NULL); |
| 3878 | kfree_rcu(old_arr, rcu); |
| 3879 | } |
| 3880 | goto out; |
| 3881 | } |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 3882 | agg_id = ad_info.aggregator_id; |
| 3883 | } |
| 3884 | bond_for_each_slave(bond, slave, iter) { |
| 3885 | if (BOND_MODE(bond) == BOND_MODE_8023AD) { |
| 3886 | struct aggregator *agg; |
| 3887 | |
| 3888 | agg = SLAVE_AD_INFO(slave)->port.aggregator; |
| 3889 | if (!agg || agg->aggregator_identifier != agg_id) |
| 3890 | continue; |
| 3891 | } |
| 3892 | if (!bond_slave_can_tx(slave)) |
| 3893 | continue; |
| 3894 | if (skipslave == slave) |
| 3895 | continue; |
| 3896 | new_arr->arr[new_arr->count++] = slave; |
| 3897 | } |
| 3898 | |
| 3899 | old_arr = rtnl_dereference(bond->slave_arr); |
| 3900 | rcu_assign_pointer(bond->slave_arr, new_arr); |
| 3901 | if (old_arr) |
| 3902 | kfree_rcu(old_arr, rcu); |
| 3903 | out: |
| 3904 | if (ret != 0 && skipslave) { |
| 3905 | int idx; |
| 3906 | |
| 3907 | /* Rare situation where caller has asked to skip a specific |
| 3908 | * slave but allocation failed (most likely!). BTW this is |
| 3909 | * only possible when the call is initiated from |
| 3910 | * __bond_release_one(). In this situation; overwrite the |
| 3911 | * skipslave entry in the array with the last entry from the |
| 3912 | * array to avoid a situation where the xmit path may choose |
| 3913 | * this to-be-skipped slave to send a packet out. |
| 3914 | */ |
| 3915 | old_arr = rtnl_dereference(bond->slave_arr); |
| 3916 | for (idx = 0; idx < old_arr->count; idx++) { |
| 3917 | if (skipslave == old_arr->arr[idx]) { |
| 3918 | old_arr->arr[idx] = |
| 3919 | old_arr->arr[old_arr->count-1]; |
| 3920 | old_arr->count--; |
| 3921 | break; |
| 3922 | } |
| 3923 | } |
| 3924 | } |
| 3925 | return ret; |
| 3926 | } |
| 3927 | |
| 3928 | /* Use this Xmit function for 3AD as well as XOR modes. The current |
| 3929 | * usable slave array is formed in the control path. The xmit function |
| 3930 | * just calculates hash and sends the packet out. |
| 3931 | */ |
Jonathan Toppins | 3036910 | 2015-01-26 01:17:01 -0500 | [diff] [blame] | 3932 | static int bond_3ad_xor_xmit(struct sk_buff *skb, struct net_device *dev) |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 3933 | { |
| 3934 | struct bonding *bond = netdev_priv(dev); |
| 3935 | struct slave *slave; |
| 3936 | struct bond_up_slave *slaves; |
| 3937 | unsigned int count; |
| 3938 | |
| 3939 | slaves = rcu_dereference(bond->slave_arr); |
| 3940 | count = slaves ? ACCESS_ONCE(slaves->count) : 0; |
| 3941 | if (likely(count)) { |
| 3942 | slave = slaves->arr[bond_xmit_hash(bond, skb) % count]; |
| 3943 | bond_dev_queue_xmit(bond, skb, slave->dev); |
| 3944 | } else { |
Eric Dumazet | 31aa860 | 2014-10-31 11:47:54 -0700 | [diff] [blame] | 3945 | bond_tx_drop(dev, skb); |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 3946 | } |
Michał Mirosław | 0693e88 | 2011-05-07 01:48:02 +0000 | [diff] [blame] | 3947 | |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 3948 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3949 | } |
| 3950 | |
Nikolay Aleksandrov | 78a646c | 2013-08-01 16:54:49 +0200 | [diff] [blame] | 3951 | /* in broadcast mode, we send everything to all usable interfaces. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3952 | static int bond_xmit_broadcast(struct sk_buff *skb, struct net_device *bond_dev) |
| 3953 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3954 | struct bonding *bond = netdev_priv(bond_dev); |
Nikolay Aleksandrov | 78a646c | 2013-08-01 16:54:49 +0200 | [diff] [blame] | 3955 | struct slave *slave = NULL; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3956 | struct list_head *iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3957 | |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3958 | bond_for_each_slave_rcu(bond, slave, iter) { |
Nikolay Aleksandrov | 78a646c | 2013-08-01 16:54:49 +0200 | [diff] [blame] | 3959 | if (bond_is_last_slave(bond, slave)) |
| 3960 | break; |
Veaceslav Falico | b6adc61 | 2014-05-15 21:39:57 +0200 | [diff] [blame] | 3961 | if (bond_slave_is_up(slave) && slave->link == BOND_LINK_UP) { |
Nikolay Aleksandrov | 78a646c | 2013-08-01 16:54:49 +0200 | [diff] [blame] | 3962 | struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3963 | |
Nikolay Aleksandrov | 78a646c | 2013-08-01 16:54:49 +0200 | [diff] [blame] | 3964 | if (!skb2) { |
dingtianhong | 9152e26 | 2014-03-25 17:00:10 +0800 | [diff] [blame] | 3965 | net_err_ratelimited("%s: Error: %s: skb_clone() failed\n", |
| 3966 | bond_dev->name, __func__); |
Nikolay Aleksandrov | 78a646c | 2013-08-01 16:54:49 +0200 | [diff] [blame] | 3967 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3968 | } |
Nikolay Aleksandrov | 78a646c | 2013-08-01 16:54:49 +0200 | [diff] [blame] | 3969 | bond_dev_queue_xmit(bond, skb2, slave->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3970 | } |
| 3971 | } |
Veaceslav Falico | b6adc61 | 2014-05-15 21:39:57 +0200 | [diff] [blame] | 3972 | if (slave && bond_slave_is_up(slave) && slave->link == BOND_LINK_UP) |
Nikolay Aleksandrov | 78a646c | 2013-08-01 16:54:49 +0200 | [diff] [blame] | 3973 | bond_dev_queue_xmit(bond, skb, slave->dev); |
| 3974 | else |
Eric Dumazet | 31aa860 | 2014-10-31 11:47:54 -0700 | [diff] [blame] | 3975 | bond_tx_drop(bond_dev, skb); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3976 | |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 3977 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3978 | } |
| 3979 | |
| 3980 | /*------------------------- Device initialization ---------------------------*/ |
| 3981 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 3982 | /* Lookup the slave that corresponds to a qid */ |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 3983 | static inline int bond_slave_override(struct bonding *bond, |
| 3984 | struct sk_buff *skb) |
| 3985 | { |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 3986 | struct slave *slave = NULL; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 3987 | struct list_head *iter; |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 3988 | |
Michał Mirosław | 0693e88 | 2011-05-07 01:48:02 +0000 | [diff] [blame] | 3989 | if (!skb->queue_mapping) |
| 3990 | return 1; |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 3991 | |
| 3992 | /* Find out if any slaves have the same mapping as this skb. */ |
dingtianhong | 3900f29 | 2014-01-02 09:13:06 +0800 | [diff] [blame] | 3993 | bond_for_each_slave_rcu(bond, slave, iter) { |
| 3994 | if (slave->queue_id == skb->queue_mapping) { |
Anton Nayshtut | f5e2dc5 | 2015-03-29 14:20:25 +0300 | [diff] [blame] | 3995 | if (bond_slave_is_up(slave) && |
| 3996 | slave->link == BOND_LINK_UP) { |
dingtianhong | 3900f29 | 2014-01-02 09:13:06 +0800 | [diff] [blame] | 3997 | bond_dev_queue_xmit(bond, skb, slave->dev); |
| 3998 | return 0; |
| 3999 | } |
| 4000 | /* If the slave isn't UP, use default transmit policy. */ |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 4001 | break; |
| 4002 | } |
| 4003 | } |
| 4004 | |
dingtianhong | 3900f29 | 2014-01-02 09:13:06 +0800 | [diff] [blame] | 4005 | return 1; |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 4006 | } |
| 4007 | |
Neil Horman | 374eeb5 | 2011-06-03 10:35:52 +0000 | [diff] [blame] | 4008 | |
Jason Wang | f663dd9 | 2014-01-10 16:18:26 +0800 | [diff] [blame] | 4009 | static u16 bond_select_queue(struct net_device *dev, struct sk_buff *skb, |
Daniel Borkmann | 99932d4 | 2014-02-16 15:55:20 +0100 | [diff] [blame] | 4010 | void *accel_priv, select_queue_fallback_t fallback) |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 4011 | { |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 4012 | /* This helper function exists to help dev_pick_tx get the correct |
Phil Oester | fd0e435 | 2011-03-14 06:22:04 +0000 | [diff] [blame] | 4013 | * destination queue. Using a helper function skips a call to |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 4014 | * skb_tx_hash and will put the skbs in the queue we expect on their |
| 4015 | * way down to the bonding driver. |
| 4016 | */ |
Phil Oester | fd0e435 | 2011-03-14 06:22:04 +0000 | [diff] [blame] | 4017 | u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0; |
| 4018 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 4019 | /* Save the original txq to restore before passing to the driver */ |
Jiri Pirko | df4ab5b | 2012-07-20 02:28:49 +0000 | [diff] [blame] | 4020 | qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; |
Neil Horman | 374eeb5 | 2011-06-03 10:35:52 +0000 | [diff] [blame] | 4021 | |
Phil Oester | fd0e435 | 2011-03-14 06:22:04 +0000 | [diff] [blame] | 4022 | if (unlikely(txq >= dev->real_num_tx_queues)) { |
David Decotigny | d30ee67 | 2011-04-13 15:22:29 +0000 | [diff] [blame] | 4023 | do { |
Phil Oester | fd0e435 | 2011-03-14 06:22:04 +0000 | [diff] [blame] | 4024 | txq -= dev->real_num_tx_queues; |
David Decotigny | d30ee67 | 2011-04-13 15:22:29 +0000 | [diff] [blame] | 4025 | } while (txq >= dev->real_num_tx_queues); |
Phil Oester | fd0e435 | 2011-03-14 06:22:04 +0000 | [diff] [blame] | 4026 | } |
| 4027 | return txq; |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 4028 | } |
| 4029 | |
Michał Mirosław | 0693e88 | 2011-05-07 01:48:02 +0000 | [diff] [blame] | 4030 | static netdev_tx_t __bond_start_xmit(struct sk_buff *skb, struct net_device *dev) |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4031 | { |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 4032 | struct bonding *bond = netdev_priv(dev); |
| 4033 | |
Veaceslav Falico | d1e2e5c | 2014-05-15 21:39:52 +0200 | [diff] [blame] | 4034 | if (bond_should_override_tx_queue(bond) && |
| 4035 | !bond_slave_override(bond, skb)) |
| 4036 | return NETDEV_TX_OK; |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4037 | |
Veaceslav Falico | 0184409 | 2014-05-15 21:39:55 +0200 | [diff] [blame] | 4038 | switch (BOND_MODE(bond)) { |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4039 | case BOND_MODE_ROUNDROBIN: |
| 4040 | return bond_xmit_roundrobin(skb, dev); |
| 4041 | case BOND_MODE_ACTIVEBACKUP: |
| 4042 | return bond_xmit_activebackup(skb, dev); |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 4043 | case BOND_MODE_8023AD: |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4044 | case BOND_MODE_XOR: |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 4045 | return bond_3ad_xor_xmit(skb, dev); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4046 | case BOND_MODE_BROADCAST: |
| 4047 | return bond_xmit_broadcast(skb, dev); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4048 | case BOND_MODE_ALB: |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4049 | return bond_alb_xmit(skb, dev); |
Mahesh Bandewar | f05b42e | 2014-04-22 16:30:20 -0700 | [diff] [blame] | 4050 | case BOND_MODE_TLB: |
| 4051 | return bond_tlb_xmit(skb, dev); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4052 | default: |
| 4053 | /* Should never happen, mode already checked */ |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 4054 | netdev_err(dev, "Unknown bonding mode %d\n", BOND_MODE(bond)); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4055 | WARN_ON_ONCE(1); |
Eric Dumazet | 31aa860 | 2014-10-31 11:47:54 -0700 | [diff] [blame] | 4056 | bond_tx_drop(dev, skb); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4057 | return NETDEV_TX_OK; |
| 4058 | } |
| 4059 | } |
| 4060 | |
Michał Mirosław | 0693e88 | 2011-05-07 01:48:02 +0000 | [diff] [blame] | 4061 | static netdev_tx_t bond_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 4062 | { |
| 4063 | struct bonding *bond = netdev_priv(dev); |
| 4064 | netdev_tx_t ret = NETDEV_TX_OK; |
| 4065 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 4066 | /* If we risk deadlock from transmitting this in the |
Michał Mirosław | 0693e88 | 2011-05-07 01:48:02 +0000 | [diff] [blame] | 4067 | * netpoll path, tell netpoll to queue the frame for later tx |
| 4068 | */ |
dingtianhong | 054bb88 | 2014-03-25 17:00:09 +0800 | [diff] [blame] | 4069 | if (unlikely(is_netpoll_tx_blocked(dev))) |
Michał Mirosław | 0693e88 | 2011-05-07 01:48:02 +0000 | [diff] [blame] | 4070 | return NETDEV_TX_BUSY; |
| 4071 | |
nikolay@redhat.com | 278b208 | 2013-08-01 16:54:51 +0200 | [diff] [blame] | 4072 | rcu_read_lock(); |
Veaceslav Falico | 0965a1f | 2013-09-25 09:20:21 +0200 | [diff] [blame] | 4073 | if (bond_has_slaves(bond)) |
Michał Mirosław | 0693e88 | 2011-05-07 01:48:02 +0000 | [diff] [blame] | 4074 | ret = __bond_start_xmit(skb, dev); |
| 4075 | else |
Eric Dumazet | 31aa860 | 2014-10-31 11:47:54 -0700 | [diff] [blame] | 4076 | bond_tx_drop(dev, skb); |
nikolay@redhat.com | 278b208 | 2013-08-01 16:54:51 +0200 | [diff] [blame] | 4077 | rcu_read_unlock(); |
Michał Mirosław | 0693e88 | 2011-05-07 01:48:02 +0000 | [diff] [blame] | 4078 | |
| 4079 | return ret; |
| 4080 | } |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4081 | |
Andy Gospodarek | bb5b052 | 2013-04-16 14:46:00 +0000 | [diff] [blame] | 4082 | static int bond_ethtool_get_settings(struct net_device *bond_dev, |
| 4083 | struct ethtool_cmd *ecmd) |
| 4084 | { |
| 4085 | struct bonding *bond = netdev_priv(bond_dev); |
Andy Gospodarek | bb5b052 | 2013-04-16 14:46:00 +0000 | [diff] [blame] | 4086 | unsigned long speed = 0; |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 4087 | struct list_head *iter; |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 4088 | struct slave *slave; |
Andy Gospodarek | bb5b052 | 2013-04-16 14:46:00 +0000 | [diff] [blame] | 4089 | |
| 4090 | ecmd->duplex = DUPLEX_UNKNOWN; |
| 4091 | ecmd->port = PORT_OTHER; |
| 4092 | |
Veaceslav Falico | 8557cd7 | 2014-05-15 21:39:59 +0200 | [diff] [blame] | 4093 | /* Since bond_slave_can_tx returns false for all inactive or down slaves, we |
Andy Gospodarek | bb5b052 | 2013-04-16 14:46:00 +0000 | [diff] [blame] | 4094 | * do not need to check mode. Though link speed might not represent |
| 4095 | * the true receive or transmit bandwidth (not all modes are symmetric) |
| 4096 | * this is an accurate maximum. |
| 4097 | */ |
Veaceslav Falico | 9caff1e | 2013-09-25 09:20:14 +0200 | [diff] [blame] | 4098 | bond_for_each_slave(bond, slave, iter) { |
Veaceslav Falico | 8557cd7 | 2014-05-15 21:39:59 +0200 | [diff] [blame] | 4099 | if (bond_slave_can_tx(slave)) { |
Andy Gospodarek | bb5b052 | 2013-04-16 14:46:00 +0000 | [diff] [blame] | 4100 | if (slave->speed != SPEED_UNKNOWN) |
| 4101 | speed += slave->speed; |
| 4102 | if (ecmd->duplex == DUPLEX_UNKNOWN && |
| 4103 | slave->duplex != DUPLEX_UNKNOWN) |
| 4104 | ecmd->duplex = slave->duplex; |
| 4105 | } |
| 4106 | } |
| 4107 | ethtool_cmd_speed_set(ecmd, speed ? : SPEED_UNKNOWN); |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 4108 | |
Andy Gospodarek | bb5b052 | 2013-04-16 14:46:00 +0000 | [diff] [blame] | 4109 | return 0; |
| 4110 | } |
| 4111 | |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 4112 | static void bond_ethtool_get_drvinfo(struct net_device *bond_dev, |
Jiri Pirko | 7826d43 | 2013-01-06 00:44:26 +0000 | [diff] [blame] | 4113 | struct ethtool_drvinfo *drvinfo) |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 4114 | { |
Jiri Pirko | 7826d43 | 2013-01-06 00:44:26 +0000 | [diff] [blame] | 4115 | strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); |
| 4116 | strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version)); |
| 4117 | snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "%d", |
| 4118 | BOND_ABI_VERSION); |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 4119 | } |
| 4120 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 4121 | static const struct ethtool_ops bond_ethtool_ops = { |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 4122 | .get_drvinfo = bond_ethtool_get_drvinfo, |
Andy Gospodarek | bb5b052 | 2013-04-16 14:46:00 +0000 | [diff] [blame] | 4123 | .get_settings = bond_ethtool_get_settings, |
Stephen Hemminger | fa53eba | 2008-09-13 21:17:09 -0400 | [diff] [blame] | 4124 | .get_link = ethtool_op_get_link, |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 4125 | }; |
| 4126 | |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4127 | static const struct net_device_ops bond_netdev_ops = { |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4128 | .ndo_init = bond_init, |
Stephen Hemminger | 9e71626 | 2009-06-12 19:02:47 +0000 | [diff] [blame] | 4129 | .ndo_uninit = bond_uninit, |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4130 | .ndo_open = bond_open, |
| 4131 | .ndo_stop = bond_close, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4132 | .ndo_start_xmit = bond_start_xmit, |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 4133 | .ndo_select_queue = bond_select_queue, |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 4134 | .ndo_get_stats64 = bond_get_stats, |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4135 | .ndo_do_ioctl = bond_do_ioctl, |
Jiri Pirko | d03462b | 2011-08-16 03:15:04 +0000 | [diff] [blame] | 4136 | .ndo_change_rx_flags = bond_change_rx_flags, |
Jay Vosburgh | 303d1cb | 2013-05-31 11:57:30 +0000 | [diff] [blame] | 4137 | .ndo_set_rx_mode = bond_set_rx_mode, |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4138 | .ndo_change_mtu = bond_change_mtu, |
Jiri Pirko | cc0e407 | 2011-07-20 04:54:46 +0000 | [diff] [blame] | 4139 | .ndo_set_mac_address = bond_set_mac_address, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4140 | .ndo_neigh_setup = bond_neigh_setup, |
Jiri Pirko | cc0e407 | 2011-07-20 04:54:46 +0000 | [diff] [blame] | 4141 | .ndo_vlan_rx_add_vid = bond_vlan_rx_add_vid, |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4142 | .ndo_vlan_rx_kill_vid = bond_vlan_rx_kill_vid, |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 4143 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Amerigo Wang | 8a8efa2 | 2011-02-17 23:43:32 +0000 | [diff] [blame] | 4144 | .ndo_netpoll_setup = bond_netpoll_setup, |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 4145 | .ndo_netpoll_cleanup = bond_netpoll_cleanup, |
| 4146 | .ndo_poll_controller = bond_poll_controller, |
| 4147 | #endif |
Jiri Pirko | 9232ecc | 2011-02-13 09:33:01 +0000 | [diff] [blame] | 4148 | .ndo_add_slave = bond_enslave, |
| 4149 | .ndo_del_slave = bond_release, |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 4150 | .ndo_fix_features = bond_fix_features, |
Jiri Pirko | 18bfb92 | 2016-07-05 11:27:38 +0200 | [diff] [blame] | 4151 | .ndo_neigh_construct = netdev_default_l2upper_neigh_construct, |
| 4152 | .ndo_neigh_destroy = netdev_default_l2upper_neigh_destroy, |
Scott Feldman | fc8f40d | 2015-05-10 09:47:57 -0700 | [diff] [blame] | 4153 | .ndo_bridge_setlink = switchdev_port_bridge_setlink, |
Scott Feldman | 85fdb95 | 2015-05-10 09:48:05 -0700 | [diff] [blame] | 4154 | .ndo_bridge_getlink = switchdev_port_bridge_getlink, |
Scott Feldman | 54ba5a0 | 2015-05-10 09:48:01 -0700 | [diff] [blame] | 4155 | .ndo_bridge_dellink = switchdev_port_bridge_dellink, |
Samudrala, Sridhar | 45d4122 | 2015-05-13 21:55:43 -0700 | [diff] [blame] | 4156 | .ndo_fdb_add = switchdev_port_fdb_add, |
| 4157 | .ndo_fdb_del = switchdev_port_fdb_del, |
| 4158 | .ndo_fdb_dump = switchdev_port_fdb_dump, |
Toshiaki Makita | 4847f04 | 2015-03-27 14:31:14 +0900 | [diff] [blame] | 4159 | .ndo_features_check = passthru_features_check, |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4160 | }; |
| 4161 | |
Doug Goldstein | b3f92b6 | 2013-02-18 14:59:23 +0000 | [diff] [blame] | 4162 | static const struct device_type bond_type = { |
| 4163 | .name = "bond", |
| 4164 | }; |
| 4165 | |
Amerigo Wang | 9e2e61f | 2010-03-31 21:30:52 +0000 | [diff] [blame] | 4166 | static void bond_destructor(struct net_device *bond_dev) |
| 4167 | { |
| 4168 | struct bonding *bond = netdev_priv(bond_dev); |
| 4169 | if (bond->wq) |
| 4170 | destroy_workqueue(bond->wq); |
| 4171 | free_netdev(bond_dev); |
| 4172 | } |
| 4173 | |
Jiri Pirko | 0a2a78c | 2013-10-18 17:43:33 +0200 | [diff] [blame] | 4174 | void bond_setup(struct net_device *bond_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4175 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4176 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4177 | |
Nikolay Aleksandrov | b743562 | 2014-09-11 22:49:25 +0200 | [diff] [blame] | 4178 | spin_lock_init(&bond->mode_lock); |
Eric Dumazet | fe30937 | 2016-03-17 17:23:36 -0700 | [diff] [blame] | 4179 | spin_lock_init(&bond->stats_lock); |
Stephen Hemminger | d2991f7 | 2009-06-12 19:02:44 +0000 | [diff] [blame] | 4180 | bond->params = bonding_defaults; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4181 | |
| 4182 | /* Initialize pointers */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4183 | bond->dev = bond_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4184 | |
| 4185 | /* Initialize the device entry points */ |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4186 | ether_setup(bond_dev); |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4187 | bond_dev->netdev_ops = &bond_netdev_ops; |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 4188 | bond_dev->ethtool_ops = &bond_ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4189 | |
Amerigo Wang | 9e2e61f | 2010-03-31 21:30:52 +0000 | [diff] [blame] | 4190 | bond_dev->destructor = bond_destructor; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4191 | |
Doug Goldstein | b3f92b6 | 2013-02-18 14:59:23 +0000 | [diff] [blame] | 4192 | SET_NETDEV_DEVTYPE(bond_dev, &bond_type); |
| 4193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4194 | /* Initialize the device options */ |
Zhang Shengju | 1098cee | 2016-03-16 09:59:15 +0000 | [diff] [blame] | 4195 | bond_dev->flags |= IFF_MASTER; |
Phil Sutter | 1e6f20c | 2015-08-18 10:30:39 +0200 | [diff] [blame] | 4196 | bond_dev->priv_flags |= IFF_BONDING | IFF_UNICAST_FLT | IFF_NO_QUEUE; |
Neil Horman | 550fd08 | 2011-07-26 06:05:38 +0000 | [diff] [blame] | 4197 | bond_dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4198 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 4199 | /* don't acquire bond device's netif_tx_lock when transmitting */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4200 | bond_dev->features |= NETIF_F_LLTX; |
| 4201 | |
| 4202 | /* By default, we declare the bond to be fully |
| 4203 | * VLAN hardware accelerated capable. Special |
| 4204 | * care is taken in the various xmit functions |
| 4205 | * when there are slaves that are not hw accel |
| 4206 | * capable |
| 4207 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4208 | |
Weilong Chen | f939981 | 2014-01-22 17:16:30 +0800 | [diff] [blame] | 4209 | /* Don't allow bond devices to change network namespaces. */ |
| 4210 | bond_dev->features |= NETIF_F_NETNS_LOCAL; |
| 4211 | |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 4212 | bond_dev->hw_features = BOND_VLAN_FEATURES | |
Patrick McHardy | f646968 | 2013-04-19 02:04:27 +0000 | [diff] [blame] | 4213 | NETIF_F_HW_VLAN_CTAG_TX | |
| 4214 | NETIF_F_HW_VLAN_CTAG_RX | |
| 4215 | NETIF_F_HW_VLAN_CTAG_FILTER; |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 4216 | |
Eric Dumazet | 24f87d4 | 2015-01-25 23:27:14 -0800 | [diff] [blame] | 4217 | bond_dev->hw_features |= NETIF_F_GSO_ENCAP_ALL; |
Michał Mirosław | b2a103e | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 4218 | bond_dev->features |= bond_dev->hw_features; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4219 | } |
| 4220 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 4221 | /* Destroy a bonding device. |
| 4222 | * Must be under rtnl_lock when this function is called. |
| 4223 | */ |
Eric W. Biederman | c67dfb2 | 2009-10-29 14:18:24 +0000 | [diff] [blame] | 4224 | static void bond_uninit(struct net_device *bond_dev) |
Jay Vosburgh | a434e43 | 2008-10-30 17:41:15 -0700 | [diff] [blame] | 4225 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4226 | struct bonding *bond = netdev_priv(bond_dev); |
Veaceslav Falico | 544a028 | 2013-09-25 09:20:15 +0200 | [diff] [blame] | 4227 | struct list_head *iter; |
| 4228 | struct slave *slave; |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 4229 | struct bond_up_slave *arr; |
Jay Vosburgh | a434e43 | 2008-10-30 17:41:15 -0700 | [diff] [blame] | 4230 | |
WANG Cong | f6dc31a | 2010-05-06 00:48:51 -0700 | [diff] [blame] | 4231 | bond_netpoll_cleanup(bond_dev); |
| 4232 | |
Eric W. Biederman | c67dfb2 | 2009-10-29 14:18:24 +0000 | [diff] [blame] | 4233 | /* Release the bonded slaves */ |
Veaceslav Falico | 544a028 | 2013-09-25 09:20:15 +0200 | [diff] [blame] | 4234 | bond_for_each_slave(bond, slave, iter) |
nikolay@redhat.com | dec1e90 | 2013-08-01 16:54:47 +0200 | [diff] [blame] | 4235 | __bond_release_one(bond_dev, slave->dev, true); |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 4236 | netdev_info(bond_dev, "Released all slaves\n"); |
Eric W. Biederman | c67dfb2 | 2009-10-29 14:18:24 +0000 | [diff] [blame] | 4237 | |
Mahesh Bandewar | ee63771 | 2014-10-04 17:45:01 -0700 | [diff] [blame] | 4238 | arr = rtnl_dereference(bond->slave_arr); |
| 4239 | if (arr) { |
| 4240 | RCU_INIT_POINTER(bond->slave_arr, NULL); |
| 4241 | kfree_rcu(arr, rcu); |
| 4242 | } |
| 4243 | |
Jay Vosburgh | a434e43 | 2008-10-30 17:41:15 -0700 | [diff] [blame] | 4244 | list_del(&bond->bond_list); |
| 4245 | |
Taku Izumi | f073c7c | 2010-12-09 15:17:13 +0000 | [diff] [blame] | 4246 | bond_debug_unregister(bond); |
Jay Vosburgh | a434e43 | 2008-10-30 17:41:15 -0700 | [diff] [blame] | 4247 | } |
| 4248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4249 | /*------------------------- Module initialization ---------------------------*/ |
| 4250 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4251 | static int bond_check_params(struct bond_params *params) |
| 4252 | { |
nikolay@redhat.com | 5a5c5fd | 2013-05-18 01:18:30 +0000 | [diff] [blame] | 4253 | int arp_validate_value, fail_over_mac_value, primary_reselect_value, i; |
stephen hemminger | f325333 | 2014-03-04 16:36:44 -0800 | [diff] [blame] | 4254 | struct bond_opt_value newval; |
| 4255 | const struct bond_opt_value *valptr; |
Veaceslav Falico | 8599b52 | 2013-06-24 11:49:34 +0200 | [diff] [blame] | 4256 | int arp_all_targets_value; |
Mahesh Bandewar | 6791e46 | 2015-05-09 00:01:55 -0700 | [diff] [blame] | 4257 | u16 ad_actor_sys_prio = 0; |
Mahesh Bandewar | d22a5fc | 2015-05-09 00:01:57 -0700 | [diff] [blame] | 4258 | u16 ad_user_port_key = 0; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4259 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 4260 | /* Convert string parameters. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4261 | if (mode) { |
Nikolay Aleksandrov | 2b3798d | 2014-01-22 14:53:17 +0100 | [diff] [blame] | 4262 | bond_opt_initstr(&newval, mode); |
| 4263 | valptr = bond_opt_parse(bond_opt_get(BOND_OPT_MODE), &newval); |
| 4264 | if (!valptr) { |
| 4265 | pr_err("Error: Invalid bonding mode \"%s\"\n", mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4266 | return -EINVAL; |
| 4267 | } |
Nikolay Aleksandrov | 2b3798d | 2014-01-22 14:53:17 +0100 | [diff] [blame] | 4268 | bond_mode = valptr->value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4269 | } |
| 4270 | |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 4271 | if (xmit_hash_policy) { |
| 4272 | if ((bond_mode != BOND_MODE_XOR) && |
Mahesh Bandewar | f05b42e | 2014-04-22 16:30:20 -0700 | [diff] [blame] | 4273 | (bond_mode != BOND_MODE_8023AD) && |
| 4274 | (bond_mode != BOND_MODE_TLB)) { |
Joe Perches | a4aee5c | 2009-12-13 20:06:07 -0800 | [diff] [blame] | 4275 | pr_info("xmit_hash_policy param is irrelevant in mode %s\n", |
Joe Perches | 9019426 | 2014-02-15 16:01:45 -0800 | [diff] [blame] | 4276 | bond_mode_name(bond_mode)); |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 4277 | } else { |
Nikolay Aleksandrov | a4b32ce | 2014-01-22 14:53:19 +0100 | [diff] [blame] | 4278 | bond_opt_initstr(&newval, xmit_hash_policy); |
| 4279 | valptr = bond_opt_parse(bond_opt_get(BOND_OPT_XMIT_HASH), |
| 4280 | &newval); |
| 4281 | if (!valptr) { |
Joe Perches | a4aee5c | 2009-12-13 20:06:07 -0800 | [diff] [blame] | 4282 | pr_err("Error: Invalid xmit_hash_policy \"%s\"\n", |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 4283 | xmit_hash_policy); |
| 4284 | return -EINVAL; |
| 4285 | } |
Nikolay Aleksandrov | a4b32ce | 2014-01-22 14:53:19 +0100 | [diff] [blame] | 4286 | xmit_hashtype = valptr->value; |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 4287 | } |
| 4288 | } |
| 4289 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4290 | if (lacp_rate) { |
| 4291 | if (bond_mode != BOND_MODE_8023AD) { |
Joe Perches | a4aee5c | 2009-12-13 20:06:07 -0800 | [diff] [blame] | 4292 | pr_info("lacp_rate param is irrelevant in mode %s\n", |
| 4293 | bond_mode_name(bond_mode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4294 | } else { |
Nikolay Aleksandrov | d3131de | 2014-01-22 14:53:27 +0100 | [diff] [blame] | 4295 | bond_opt_initstr(&newval, lacp_rate); |
| 4296 | valptr = bond_opt_parse(bond_opt_get(BOND_OPT_LACP_RATE), |
| 4297 | &newval); |
| 4298 | if (!valptr) { |
Joe Perches | a4aee5c | 2009-12-13 20:06:07 -0800 | [diff] [blame] | 4299 | pr_err("Error: Invalid lacp rate \"%s\"\n", |
Nikolay Aleksandrov | d3131de | 2014-01-22 14:53:27 +0100 | [diff] [blame] | 4300 | lacp_rate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4301 | return -EINVAL; |
| 4302 | } |
Nikolay Aleksandrov | d3131de | 2014-01-22 14:53:27 +0100 | [diff] [blame] | 4303 | lacp_fast = valptr->value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4304 | } |
| 4305 | } |
| 4306 | |
Jay Vosburgh | fd989c8 | 2008-11-04 17:51:16 -0800 | [diff] [blame] | 4307 | if (ad_select) { |
Nikolay Aleksandrov | 548d28b | 2014-07-13 09:47:47 +0200 | [diff] [blame] | 4308 | bond_opt_initstr(&newval, ad_select); |
Nikolay Aleksandrov | 9e5f5ee | 2014-01-22 14:53:29 +0100 | [diff] [blame] | 4309 | valptr = bond_opt_parse(bond_opt_get(BOND_OPT_AD_SELECT), |
| 4310 | &newval); |
| 4311 | if (!valptr) { |
| 4312 | pr_err("Error: Invalid ad_select \"%s\"\n", ad_select); |
Jay Vosburgh | fd989c8 | 2008-11-04 17:51:16 -0800 | [diff] [blame] | 4313 | return -EINVAL; |
| 4314 | } |
Nikolay Aleksandrov | 9e5f5ee | 2014-01-22 14:53:29 +0100 | [diff] [blame] | 4315 | params->ad_select = valptr->value; |
| 4316 | if (bond_mode != BOND_MODE_8023AD) |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4317 | pr_warn("ad_select param only affects 802.3ad mode\n"); |
Jay Vosburgh | fd989c8 | 2008-11-04 17:51:16 -0800 | [diff] [blame] | 4318 | } else { |
| 4319 | params->ad_select = BOND_AD_STABLE; |
| 4320 | } |
| 4321 | |
Nicolas de Pesloüan | f584130 | 2009-08-28 13:18:34 +0000 | [diff] [blame] | 4322 | if (max_bonds < 0) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4323 | pr_warn("Warning: max_bonds (%d) not in range %d-%d, so it was reset to BOND_DEFAULT_MAX_BONDS (%d)\n", |
| 4324 | max_bonds, 0, INT_MAX, BOND_DEFAULT_MAX_BONDS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4325 | max_bonds = BOND_DEFAULT_MAX_BONDS; |
| 4326 | } |
| 4327 | |
| 4328 | if (miimon < 0) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4329 | pr_warn("Warning: miimon module parameter (%d), not in range 0-%d, so it was reset to 0\n", |
| 4330 | miimon, INT_MAX); |
Nikolay Aleksandrov | b98d9c6 | 2014-01-22 14:53:31 +0100 | [diff] [blame] | 4331 | miimon = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4332 | } |
| 4333 | |
| 4334 | if (updelay < 0) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4335 | pr_warn("Warning: updelay module parameter (%d), not in range 0-%d, so it was reset to 0\n", |
| 4336 | updelay, INT_MAX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4337 | updelay = 0; |
| 4338 | } |
| 4339 | |
| 4340 | if (downdelay < 0) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4341 | pr_warn("Warning: downdelay module parameter (%d), not in range 0-%d, so it was reset to 0\n", |
| 4342 | downdelay, INT_MAX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4343 | downdelay = 0; |
| 4344 | } |
| 4345 | |
| 4346 | if ((use_carrier != 0) && (use_carrier != 1)) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4347 | pr_warn("Warning: use_carrier module parameter (%d), not of valid value (0/1), so it was set to 1\n", |
| 4348 | use_carrier); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4349 | use_carrier = 1; |
| 4350 | } |
| 4351 | |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 4352 | if (num_peer_notif < 0 || num_peer_notif > 255) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4353 | pr_warn("Warning: num_grat_arp/num_unsol_na (%d) not in range 0-255 so it was reset to 1\n", |
| 4354 | num_peer_notif); |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 4355 | num_peer_notif = 1; |
| 4356 | } |
| 4357 | |
dingtianhong | 834db4b | 2013-12-21 14:40:17 +0800 | [diff] [blame] | 4358 | /* reset values for 802.3ad/TLB/ALB */ |
Veaceslav Falico | 267bed7 | 2014-05-15 21:39:53 +0200 | [diff] [blame] | 4359 | if (!bond_mode_uses_arp(bond_mode)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4360 | if (!miimon) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4361 | pr_warn("Warning: miimon must be specified, otherwise bonding will not detect link failure, speed and duplex which are essential for 802.3ad operation\n"); |
| 4362 | pr_warn("Forcing miimon to 100msec\n"); |
dingtianhong | fe9d04a | 2013-11-22 22:28:43 +0800 | [diff] [blame] | 4363 | miimon = BOND_DEFAULT_MIIMON; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4364 | } |
| 4365 | } |
| 4366 | |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 4367 | if (tx_queues < 1 || tx_queues > 255) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4368 | pr_warn("Warning: tx_queues (%d) should be between 1 and 255, resetting to %d\n", |
| 4369 | tx_queues, BOND_DEFAULT_TX_QUEUES); |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 4370 | tx_queues = BOND_DEFAULT_TX_QUEUES; |
| 4371 | } |
| 4372 | |
Andy Gospodarek | ebd8e49 | 2010-06-02 08:39:21 +0000 | [diff] [blame] | 4373 | if ((all_slaves_active != 0) && (all_slaves_active != 1)) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4374 | pr_warn("Warning: all_slaves_active module parameter (%d), not of valid value (0/1), so it was set to 0\n", |
| 4375 | all_slaves_active); |
Andy Gospodarek | ebd8e49 | 2010-06-02 08:39:21 +0000 | [diff] [blame] | 4376 | all_slaves_active = 0; |
| 4377 | } |
| 4378 | |
Flavio Leitner | c2952c3 | 2010-10-05 14:23:59 +0000 | [diff] [blame] | 4379 | if (resend_igmp < 0 || resend_igmp > 255) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4380 | pr_warn("Warning: resend_igmp (%d) should be between 0 and 255, resetting to %d\n", |
| 4381 | resend_igmp, BOND_DEFAULT_RESEND_IGMP); |
Flavio Leitner | c2952c3 | 2010-10-05 14:23:59 +0000 | [diff] [blame] | 4382 | resend_igmp = BOND_DEFAULT_RESEND_IGMP; |
| 4383 | } |
| 4384 | |
Nikolay Aleksandrov | aa59d85 | 2014-01-22 14:53:18 +0100 | [diff] [blame] | 4385 | bond_opt_initval(&newval, packets_per_slave); |
| 4386 | if (!bond_opt_parse(bond_opt_get(BOND_OPT_PACKETS_PER_SLAVE), &newval)) { |
Nikolay Aleksandrov | 7395832 | 2013-11-05 13:51:41 +0100 | [diff] [blame] | 4387 | pr_warn("Warning: packets_per_slave (%d) should be between 0 and %u resetting to 1\n", |
| 4388 | packets_per_slave, USHRT_MAX); |
| 4389 | packets_per_slave = 1; |
| 4390 | } |
| 4391 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4392 | if (bond_mode == BOND_MODE_ALB) { |
Joe Perches | a4aee5c | 2009-12-13 20:06:07 -0800 | [diff] [blame] | 4393 | pr_notice("In ALB mode you might experience client disconnections upon reconnection of a link if the bonding module updelay parameter (%d msec) is incompatible with the forwarding delay time of the switch\n", |
| 4394 | updelay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4395 | } |
| 4396 | |
| 4397 | if (!miimon) { |
| 4398 | if (updelay || downdelay) { |
| 4399 | /* just warn the user the up/down delay will have |
| 4400 | * no effect since miimon is zero... |
| 4401 | */ |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4402 | pr_warn("Warning: miimon module parameter not set and updelay (%d) or downdelay (%d) module parameter is set; updelay and downdelay have no effect unless miimon is set\n", |
| 4403 | updelay, downdelay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4404 | } |
| 4405 | } else { |
| 4406 | /* don't allow arp monitoring */ |
| 4407 | if (arp_interval) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4408 | pr_warn("Warning: miimon (%d) and arp_interval (%d) can't be used simultaneously, disabling ARP monitoring\n", |
| 4409 | miimon, arp_interval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4410 | arp_interval = 0; |
| 4411 | } |
| 4412 | |
| 4413 | if ((updelay % miimon) != 0) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4414 | pr_warn("Warning: updelay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", |
| 4415 | updelay, miimon, (updelay / miimon) * miimon); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4416 | } |
| 4417 | |
| 4418 | updelay /= miimon; |
| 4419 | |
| 4420 | if ((downdelay % miimon) != 0) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4421 | pr_warn("Warning: downdelay (%d) is not a multiple of miimon (%d), downdelay rounded to %d ms\n", |
| 4422 | downdelay, miimon, |
| 4423 | (downdelay / miimon) * miimon); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4424 | } |
| 4425 | |
| 4426 | downdelay /= miimon; |
| 4427 | } |
| 4428 | |
| 4429 | if (arp_interval < 0) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4430 | pr_warn("Warning: arp_interval module parameter (%d), not in range 0-%d, so it was reset to 0\n", |
| 4431 | arp_interval, INT_MAX); |
Nikolay Aleksandrov | 7bdb04e | 2014-01-22 14:53:23 +0100 | [diff] [blame] | 4432 | arp_interval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4433 | } |
| 4434 | |
nikolay@redhat.com | 5a5c5fd | 2013-05-18 01:18:30 +0000 | [diff] [blame] | 4435 | for (arp_ip_count = 0, i = 0; |
| 4436 | (arp_ip_count < BOND_MAX_ARP_TARGETS) && arp_ip_target[i]; i++) { |
dingtianhong | 89015c1 | 2013-12-04 18:59:31 +0800 | [diff] [blame] | 4437 | __be32 ip; |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 4438 | |
| 4439 | /* not a complete check, but good enough to catch mistakes */ |
dingtianhong | 89015c1 | 2013-12-04 18:59:31 +0800 | [diff] [blame] | 4440 | if (!in4_pton(arp_ip_target[i], -1, (u8 *)&ip, -1, NULL) || |
Veaceslav Falico | 2807a9f | 2014-05-15 21:39:56 +0200 | [diff] [blame] | 4441 | !bond_is_ip_target_ok(ip)) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4442 | pr_warn("Warning: bad arp_ip_target module parameter (%s), ARP monitoring will not be performed\n", |
| 4443 | arp_ip_target[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4444 | arp_interval = 0; |
| 4445 | } else { |
Veaceslav Falico | 0afee4e | 2013-06-24 11:49:30 +0200 | [diff] [blame] | 4446 | if (bond_get_targets_ip(arp_target, ip) == -1) |
| 4447 | arp_target[arp_ip_count++] = ip; |
| 4448 | else |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4449 | pr_warn("Warning: duplicate address %pI4 in arp_ip_target, skipping\n", |
| 4450 | &ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4451 | } |
| 4452 | } |
| 4453 | |
| 4454 | if (arp_interval && !arp_ip_count) { |
| 4455 | /* don't allow arping if no arp_ip_target given... */ |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4456 | pr_warn("Warning: arp_interval module parameter (%d) specified without providing an arp_ip_target parameter, arp_interval was reset to 0\n", |
| 4457 | arp_interval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4458 | arp_interval = 0; |
| 4459 | } |
| 4460 | |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4461 | if (arp_validate) { |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4462 | if (!arp_interval) { |
Joe Perches | a4aee5c | 2009-12-13 20:06:07 -0800 | [diff] [blame] | 4463 | pr_err("arp_validate requires arp_interval\n"); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4464 | return -EINVAL; |
| 4465 | } |
| 4466 | |
Nikolay Aleksandrov | 1622888 | 2014-01-22 14:53:20 +0100 | [diff] [blame] | 4467 | bond_opt_initstr(&newval, arp_validate); |
| 4468 | valptr = bond_opt_parse(bond_opt_get(BOND_OPT_ARP_VALIDATE), |
| 4469 | &newval); |
| 4470 | if (!valptr) { |
Joe Perches | a4aee5c | 2009-12-13 20:06:07 -0800 | [diff] [blame] | 4471 | pr_err("Error: invalid arp_validate \"%s\"\n", |
Nikolay Aleksandrov | 1622888 | 2014-01-22 14:53:20 +0100 | [diff] [blame] | 4472 | arp_validate); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4473 | return -EINVAL; |
| 4474 | } |
Nikolay Aleksandrov | 1622888 | 2014-01-22 14:53:20 +0100 | [diff] [blame] | 4475 | arp_validate_value = valptr->value; |
| 4476 | } else { |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4477 | arp_validate_value = 0; |
Nikolay Aleksandrov | 1622888 | 2014-01-22 14:53:20 +0100 | [diff] [blame] | 4478 | } |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4479 | |
Veaceslav Falico | 8599b52 | 2013-06-24 11:49:34 +0200 | [diff] [blame] | 4480 | arp_all_targets_value = 0; |
| 4481 | if (arp_all_targets) { |
Nikolay Aleksandrov | edf36b2 | 2014-01-22 14:53:21 +0100 | [diff] [blame] | 4482 | bond_opt_initstr(&newval, arp_all_targets); |
| 4483 | valptr = bond_opt_parse(bond_opt_get(BOND_OPT_ARP_ALL_TARGETS), |
| 4484 | &newval); |
| 4485 | if (!valptr) { |
Veaceslav Falico | 8599b52 | 2013-06-24 11:49:34 +0200 | [diff] [blame] | 4486 | pr_err("Error: invalid arp_all_targets_value \"%s\"\n", |
| 4487 | arp_all_targets); |
| 4488 | arp_all_targets_value = 0; |
Nikolay Aleksandrov | edf36b2 | 2014-01-22 14:53:21 +0100 | [diff] [blame] | 4489 | } else { |
| 4490 | arp_all_targets_value = valptr->value; |
Veaceslav Falico | 8599b52 | 2013-06-24 11:49:34 +0200 | [diff] [blame] | 4491 | } |
| 4492 | } |
| 4493 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4494 | if (miimon) { |
Joe Perches | a4aee5c | 2009-12-13 20:06:07 -0800 | [diff] [blame] | 4495 | pr_info("MII link monitoring set to %d ms\n", miimon); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4496 | } else if (arp_interval) { |
Nikolay Aleksandrov | 1622888 | 2014-01-22 14:53:20 +0100 | [diff] [blame] | 4497 | valptr = bond_opt_get_val(BOND_OPT_ARP_VALIDATE, |
| 4498 | arp_validate_value); |
Joe Perches | a4aee5c | 2009-12-13 20:06:07 -0800 | [diff] [blame] | 4499 | pr_info("ARP monitoring set to %d ms, validate %s, with %d target(s):", |
Nikolay Aleksandrov | 1622888 | 2014-01-22 14:53:20 +0100 | [diff] [blame] | 4500 | arp_interval, valptr->string, arp_ip_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4501 | |
| 4502 | for (i = 0; i < arp_ip_count; i++) |
Joe Perches | 9019426 | 2014-02-15 16:01:45 -0800 | [diff] [blame] | 4503 | pr_cont(" %s", arp_ip_target[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4504 | |
Joe Perches | 9019426 | 2014-02-15 16:01:45 -0800 | [diff] [blame] | 4505 | pr_cont("\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4506 | |
Jay Vosburgh | b8a9787 | 2008-06-13 18:12:04 -0700 | [diff] [blame] | 4507 | } else if (max_bonds) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4508 | /* miimon and arp_interval not set, we need one so things |
| 4509 | * work as expected, see bonding.txt for details |
| 4510 | */ |
Joe Perches | 9019426 | 2014-02-15 16:01:45 -0800 | [diff] [blame] | 4511 | pr_debug("Warning: either miimon or arp_interval and arp_ip_target module parameters must be specified, otherwise bonding will not detect link failures! see bonding.txt for details\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4512 | } |
| 4513 | |
Veaceslav Falico | ec0865a | 2014-05-15 21:39:54 +0200 | [diff] [blame] | 4514 | if (primary && !bond_mode_uses_primary(bond_mode)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4515 | /* currently, using a primary only makes sense |
| 4516 | * in active backup, TLB or ALB modes |
| 4517 | */ |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4518 | pr_warn("Warning: %s primary device specified but has no effect in %s mode\n", |
| 4519 | primary, bond_mode_name(bond_mode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4520 | primary = NULL; |
| 4521 | } |
| 4522 | |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 4523 | if (primary && primary_reselect) { |
Nikolay Aleksandrov | 388d3a6 | 2014-01-22 14:53:33 +0100 | [diff] [blame] | 4524 | bond_opt_initstr(&newval, primary_reselect); |
| 4525 | valptr = bond_opt_parse(bond_opt_get(BOND_OPT_PRIMARY_RESELECT), |
| 4526 | &newval); |
| 4527 | if (!valptr) { |
Joe Perches | a4aee5c | 2009-12-13 20:06:07 -0800 | [diff] [blame] | 4528 | pr_err("Error: Invalid primary_reselect \"%s\"\n", |
Nikolay Aleksandrov | 388d3a6 | 2014-01-22 14:53:33 +0100 | [diff] [blame] | 4529 | primary_reselect); |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 4530 | return -EINVAL; |
| 4531 | } |
Nikolay Aleksandrov | 388d3a6 | 2014-01-22 14:53:33 +0100 | [diff] [blame] | 4532 | primary_reselect_value = valptr->value; |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 4533 | } else { |
| 4534 | primary_reselect_value = BOND_PRI_RESELECT_ALWAYS; |
| 4535 | } |
| 4536 | |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 4537 | if (fail_over_mac) { |
Nikolay Aleksandrov | 1df6b6a | 2014-01-22 14:53:22 +0100 | [diff] [blame] | 4538 | bond_opt_initstr(&newval, fail_over_mac); |
| 4539 | valptr = bond_opt_parse(bond_opt_get(BOND_OPT_FAIL_OVER_MAC), |
| 4540 | &newval); |
| 4541 | if (!valptr) { |
Joe Perches | a4aee5c | 2009-12-13 20:06:07 -0800 | [diff] [blame] | 4542 | pr_err("Error: invalid fail_over_mac \"%s\"\n", |
Nikolay Aleksandrov | 1df6b6a | 2014-01-22 14:53:22 +0100 | [diff] [blame] | 4543 | fail_over_mac); |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 4544 | return -EINVAL; |
| 4545 | } |
Nikolay Aleksandrov | 1df6b6a | 2014-01-22 14:53:22 +0100 | [diff] [blame] | 4546 | fail_over_mac_value = valptr->value; |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 4547 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4548 | pr_warn("Warning: fail_over_mac only affects active-backup mode\n"); |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 4549 | } else { |
| 4550 | fail_over_mac_value = BOND_FOM_NONE; |
| 4551 | } |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 4552 | |
Mahesh Bandewar | 6791e46 | 2015-05-09 00:01:55 -0700 | [diff] [blame] | 4553 | bond_opt_initstr(&newval, "default"); |
| 4554 | valptr = bond_opt_parse( |
| 4555 | bond_opt_get(BOND_OPT_AD_ACTOR_SYS_PRIO), |
| 4556 | &newval); |
| 4557 | if (!valptr) { |
| 4558 | pr_err("Error: No ad_actor_sys_prio default value"); |
| 4559 | return -EINVAL; |
| 4560 | } |
| 4561 | ad_actor_sys_prio = valptr->value; |
| 4562 | |
Mahesh Bandewar | d22a5fc | 2015-05-09 00:01:57 -0700 | [diff] [blame] | 4563 | valptr = bond_opt_parse(bond_opt_get(BOND_OPT_AD_USER_PORT_KEY), |
| 4564 | &newval); |
| 4565 | if (!valptr) { |
| 4566 | pr_err("Error: No ad_user_port_key default value"); |
| 4567 | return -EINVAL; |
| 4568 | } |
| 4569 | ad_user_port_key = valptr->value; |
| 4570 | |
dingtianhong | 3a7129e | 2013-12-21 14:40:12 +0800 | [diff] [blame] | 4571 | if (lp_interval == 0) { |
Joe Perches | 91565eb | 2014-02-15 15:57:04 -0800 | [diff] [blame] | 4572 | pr_warn("Warning: ip_interval must be between 1 and %d, so it was reset to %d\n", |
| 4573 | INT_MAX, BOND_ALB_DEFAULT_LP_INTERVAL); |
dingtianhong | 3a7129e | 2013-12-21 14:40:12 +0800 | [diff] [blame] | 4574 | lp_interval = BOND_ALB_DEFAULT_LP_INTERVAL; |
| 4575 | } |
| 4576 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4577 | /* fill params struct with the proper values */ |
| 4578 | params->mode = bond_mode; |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 4579 | params->xmit_policy = xmit_hashtype; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4580 | params->miimon = miimon; |
Ben Hutchings | ad246c9 | 2011-04-26 15:25:52 +0000 | [diff] [blame] | 4581 | params->num_peer_notif = num_peer_notif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4582 | params->arp_interval = arp_interval; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4583 | params->arp_validate = arp_validate_value; |
Veaceslav Falico | 8599b52 | 2013-06-24 11:49:34 +0200 | [diff] [blame] | 4584 | params->arp_all_targets = arp_all_targets_value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4585 | params->updelay = updelay; |
| 4586 | params->downdelay = downdelay; |
| 4587 | params->use_carrier = use_carrier; |
| 4588 | params->lacp_fast = lacp_fast; |
| 4589 | params->primary[0] = 0; |
Jiri Pirko | a549952 | 2009-09-25 03:28:09 +0000 | [diff] [blame] | 4590 | params->primary_reselect = primary_reselect_value; |
Jay Vosburgh | 3915c1e8 | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 4591 | params->fail_over_mac = fail_over_mac_value; |
Andy Gospodarek | bb1d912 | 2010-06-02 08:40:18 +0000 | [diff] [blame] | 4592 | params->tx_queues = tx_queues; |
Andy Gospodarek | ebd8e49 | 2010-06-02 08:39:21 +0000 | [diff] [blame] | 4593 | params->all_slaves_active = all_slaves_active; |
Flavio Leitner | c2952c3 | 2010-10-05 14:23:59 +0000 | [diff] [blame] | 4594 | params->resend_igmp = resend_igmp; |
stephen hemminger | 655f891 | 2011-06-22 09:54:39 +0000 | [diff] [blame] | 4595 | params->min_links = min_links; |
dingtianhong | 3a7129e | 2013-12-21 14:40:12 +0800 | [diff] [blame] | 4596 | params->lp_interval = lp_interval; |
Hannes Frederic Sowa | 809fa97 | 2014-01-22 02:29:41 +0100 | [diff] [blame] | 4597 | params->packets_per_slave = packets_per_slave; |
Mahesh Bandewar | e9f0fb8 | 2014-04-22 16:30:22 -0700 | [diff] [blame] | 4598 | params->tlb_dynamic_lb = 1; /* Default value */ |
Mahesh Bandewar | 6791e46 | 2015-05-09 00:01:55 -0700 | [diff] [blame] | 4599 | params->ad_actor_sys_prio = ad_actor_sys_prio; |
Mahesh Bandewar | 7451495 | 2015-05-09 00:01:56 -0700 | [diff] [blame] | 4600 | eth_zero_addr(params->ad_actor_system); |
Mahesh Bandewar | d22a5fc | 2015-05-09 00:01:57 -0700 | [diff] [blame] | 4601 | params->ad_user_port_key = ad_user_port_key; |
Hannes Frederic Sowa | 809fa97 | 2014-01-22 02:29:41 +0100 | [diff] [blame] | 4602 | if (packets_per_slave > 0) { |
| 4603 | params->reciprocal_packets_per_slave = |
| 4604 | reciprocal_value(packets_per_slave); |
| 4605 | } else { |
| 4606 | /* reciprocal_packets_per_slave is unused if |
| 4607 | * packets_per_slave is 0 or 1, just initialize it |
| 4608 | */ |
| 4609 | params->reciprocal_packets_per_slave = |
| 4610 | (struct reciprocal_value) { 0 }; |
| 4611 | } |
| 4612 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4613 | if (primary) { |
| 4614 | strncpy(params->primary, primary, IFNAMSIZ); |
| 4615 | params->primary[IFNAMSIZ - 1] = 0; |
| 4616 | } |
| 4617 | |
| 4618 | memcpy(params->arp_targets, arp_target, sizeof(arp_target)); |
| 4619 | |
| 4620 | return 0; |
| 4621 | } |
| 4622 | |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 4623 | /* Called from registration process */ |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4624 | static int bond_init(struct net_device *bond_dev) |
| 4625 | { |
| 4626 | struct bonding *bond = netdev_priv(bond_dev); |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4627 | struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id); |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4628 | |
Veaceslav Falico | 76444f5 | 2014-07-15 19:35:58 +0200 | [diff] [blame] | 4629 | netdev_dbg(bond_dev, "Begin bond_init\n"); |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4630 | |
Bhaktipriya Shridhar | f9f225e | 2016-08-30 22:02:01 +0530 | [diff] [blame] | 4631 | bond->wq = alloc_ordered_workqueue(bond_dev->name, WQ_MEM_RECLAIM); |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4632 | if (!bond->wq) |
| 4633 | return -ENOMEM; |
| 4634 | |
Eric Dumazet | d3fff6c | 2016-06-09 07:45:12 -0700 | [diff] [blame] | 4635 | netdev_lockdep_set_classes(bond_dev); |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4636 | |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4637 | list_add_tail(&bond->bond_list, &bn->dev_list); |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4638 | |
Eric W. Biederman | 6151b3d | 2009-10-29 14:18:22 +0000 | [diff] [blame] | 4639 | bond_prepare_sysfs_group(bond); |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 4640 | |
Taku Izumi | f073c7c | 2010-12-09 15:17:13 +0000 | [diff] [blame] | 4641 | bond_debug_register(bond); |
| 4642 | |
Jiri Pirko | 409cc1f | 2013-01-30 11:08:11 +0100 | [diff] [blame] | 4643 | /* Ensure valid dev_addr */ |
| 4644 | if (is_zero_ether_addr(bond_dev->dev_addr) && |
nikolay@redhat.com | 97a1e63 | 2013-06-26 17:13:38 +0200 | [diff] [blame] | 4645 | bond_dev->addr_assign_type == NET_ADDR_PERM) |
Jiri Pirko | 409cc1f | 2013-01-30 11:08:11 +0100 | [diff] [blame] | 4646 | eth_hw_addr_random(bond_dev); |
Jiri Pirko | 409cc1f | 2013-01-30 11:08:11 +0100 | [diff] [blame] | 4647 | |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4648 | return 0; |
| 4649 | } |
| 4650 | |
Jiri Pirko | 0a2a78c | 2013-10-18 17:43:33 +0200 | [diff] [blame] | 4651 | unsigned int bond_get_num_tx_queues(void) |
Jiri Pirko | d5da451 | 2011-08-10 06:09:44 +0000 | [diff] [blame] | 4652 | { |
stephen hemminger | efacb30 | 2012-04-10 18:34:43 +0000 | [diff] [blame] | 4653 | return tx_queues; |
Jiri Pirko | d5da451 | 2011-08-10 06:09:44 +0000 | [diff] [blame] | 4654 | } |
| 4655 | |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4656 | /* Create a new bond based on the specified name and bonding parameters. |
Jay Vosburgh | e4b91c4 | 2007-01-19 18:15:31 -0800 | [diff] [blame] | 4657 | * If name is NULL, obtain a suitable "bond%d" name for us. |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4658 | * Caller must NOT hold rtnl_lock; we need to release it here before we |
| 4659 | * set up our sysfs entries. |
| 4660 | */ |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4661 | int bond_create(struct net *net, const char *name) |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4662 | { |
| 4663 | struct net_device *bond_dev; |
Pai | e913fb2 | 2015-04-29 14:24:23 -0400 | [diff] [blame] | 4664 | struct bonding *bond; |
| 4665 | struct alb_bond_info *bond_info; |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4666 | int res; |
| 4667 | |
| 4668 | rtnl_lock(); |
Jay Vosburgh | 027ea04 | 2008-01-17 16:25:02 -0800 | [diff] [blame] | 4669 | |
Jiri Pirko | 1c5cae8 | 2011-04-30 01:21:32 +0000 | [diff] [blame] | 4670 | bond_dev = alloc_netdev_mq(sizeof(struct bonding), |
Tom Gundersen | c835a67 | 2014-07-14 16:37:24 +0200 | [diff] [blame] | 4671 | name ? name : "bond%d", NET_NAME_UNKNOWN, |
Jiri Pirko | 1c5cae8 | 2011-04-30 01:21:32 +0000 | [diff] [blame] | 4672 | bond_setup, tx_queues); |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4673 | if (!bond_dev) { |
Joe Perches | a4aee5c | 2009-12-13 20:06:07 -0800 | [diff] [blame] | 4674 | pr_err("%s: eek! can't alloc netdev!\n", name); |
Amerigo Wang | 9e2e61f | 2010-03-31 21:30:52 +0000 | [diff] [blame] | 4675 | rtnl_unlock(); |
| 4676 | return -ENOMEM; |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4677 | } |
| 4678 | |
Pai | e913fb2 | 2015-04-29 14:24:23 -0400 | [diff] [blame] | 4679 | /* |
| 4680 | * Initialize rx_hashtbl_used_head to RLB_NULL_INDEX. |
| 4681 | * It is set to 0 by default which is wrong. |
| 4682 | */ |
| 4683 | bond = netdev_priv(bond_dev); |
| 4684 | bond_info = &(BOND_ALB_INFO(bond)); |
| 4685 | bond_info->rx_hashtbl_used_head = RLB_NULL_INDEX; |
| 4686 | |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4687 | dev_net_set(bond_dev, net); |
Eric W. Biederman | 88ead97 | 2009-10-29 14:18:25 +0000 | [diff] [blame] | 4688 | bond_dev->rtnl_link_ops = &bond_link_ops; |
| 4689 | |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4690 | res = register_netdevice(bond_dev); |
Peter Zijlstra | 0daa2303 | 2006-11-08 19:51:01 -0800 | [diff] [blame] | 4691 | |
Phil Oester | e826eaf | 2011-03-14 06:22:05 +0000 | [diff] [blame] | 4692 | netif_carrier_off(bond_dev); |
| 4693 | |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4694 | rtnl_unlock(); |
Amerigo Wang | 9e2e61f | 2010-03-31 21:30:52 +0000 | [diff] [blame] | 4695 | if (res < 0) |
| 4696 | bond_destructor(bond_dev); |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4697 | return res; |
| 4698 | } |
| 4699 | |
Alexey Dobriyan | 2c8c1e7 | 2010-01-17 03:35:32 +0000 | [diff] [blame] | 4700 | static int __net_init bond_net_init(struct net *net) |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4701 | { |
Eric W. Biederman | 1544974 | 2009-11-29 15:46:04 +0000 | [diff] [blame] | 4702 | struct bond_net *bn = net_generic(net, bond_net_id); |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4703 | |
| 4704 | bn->net = net; |
| 4705 | INIT_LIST_HEAD(&bn->dev_list); |
| 4706 | |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4707 | bond_create_proc_dir(bn); |
Eric W. Biederman | 4c22400 | 2011-10-12 21:56:25 +0000 | [diff] [blame] | 4708 | bond_create_sysfs(bn); |
Veaceslav Falico | 87a7b84 | 2013-06-24 11:49:29 +0200 | [diff] [blame] | 4709 | |
Eric W. Biederman | 1544974 | 2009-11-29 15:46:04 +0000 | [diff] [blame] | 4710 | return 0; |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4711 | } |
| 4712 | |
Alexey Dobriyan | 2c8c1e7 | 2010-01-17 03:35:32 +0000 | [diff] [blame] | 4713 | static void __net_exit bond_net_exit(struct net *net) |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4714 | { |
Eric W. Biederman | 1544974 | 2009-11-29 15:46:04 +0000 | [diff] [blame] | 4715 | struct bond_net *bn = net_generic(net, bond_net_id); |
nikolay@redhat.com | 69b0216 | 2013-04-06 00:54:38 +0000 | [diff] [blame] | 4716 | struct bonding *bond, *tmp_bond; |
| 4717 | LIST_HEAD(list); |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4718 | |
Eric W. Biederman | 4c22400 | 2011-10-12 21:56:25 +0000 | [diff] [blame] | 4719 | bond_destroy_sysfs(bn); |
nikolay@redhat.com | 69b0216 | 2013-04-06 00:54:38 +0000 | [diff] [blame] | 4720 | |
| 4721 | /* Kill off any bonds created after unregistering bond rtnl ops */ |
| 4722 | rtnl_lock(); |
| 4723 | list_for_each_entry_safe(bond, tmp_bond, &bn->dev_list, bond_list) |
| 4724 | unregister_netdevice_queue(bond->dev, &list); |
| 4725 | unregister_netdevice_many(&list); |
| 4726 | rtnl_unlock(); |
Veaceslav Falico | 23fa5c2 | 2014-07-17 12:04:08 +0200 | [diff] [blame] | 4727 | |
| 4728 | bond_destroy_proc_dir(bn); |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4729 | } |
| 4730 | |
| 4731 | static struct pernet_operations bond_net_ops = { |
| 4732 | .init = bond_net_init, |
| 4733 | .exit = bond_net_exit, |
Eric W. Biederman | 1544974 | 2009-11-29 15:46:04 +0000 | [diff] [blame] | 4734 | .id = &bond_net_id, |
| 4735 | .size = sizeof(struct bond_net), |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4736 | }; |
| 4737 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4738 | static int __init bonding_init(void) |
| 4739 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4740 | int i; |
| 4741 | int res; |
| 4742 | |
Amerigo Wang | bd33acc | 2011-03-06 21:58:46 +0000 | [diff] [blame] | 4743 | pr_info("%s", bond_version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4744 | |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4745 | res = bond_check_params(&bonding_defaults); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4746 | if (res) |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4747 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4748 | |
Eric W. Biederman | 1544974 | 2009-11-29 15:46:04 +0000 | [diff] [blame] | 4749 | res = register_pernet_subsys(&bond_net_ops); |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4750 | if (res) |
| 4751 | goto out; |
Jay Vosburgh | 027ea04 | 2008-01-17 16:25:02 -0800 | [diff] [blame] | 4752 | |
Jiri Pirko | 0a2a78c | 2013-10-18 17:43:33 +0200 | [diff] [blame] | 4753 | res = bond_netlink_init(); |
Eric W. Biederman | 88ead97 | 2009-10-29 14:18:25 +0000 | [diff] [blame] | 4754 | if (res) |
Eric W. Biederman | 6639104 | 2009-10-29 23:58:54 +0000 | [diff] [blame] | 4755 | goto err_link; |
Eric W. Biederman | 88ead97 | 2009-10-29 14:18:25 +0000 | [diff] [blame] | 4756 | |
Taku Izumi | f073c7c | 2010-12-09 15:17:13 +0000 | [diff] [blame] | 4757 | bond_create_debugfs(); |
| 4758 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4759 | for (i = 0; i < max_bonds; i++) { |
Eric W. Biederman | ec87fd3 | 2009-10-29 14:18:26 +0000 | [diff] [blame] | 4760 | res = bond_create(&init_net, NULL); |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4761 | if (res) |
| 4762 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4763 | } |
| 4764 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4765 | register_netdevice_notifier(&bond_netdev_notifier); |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4766 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4767 | return res; |
Eric W. Biederman | 88ead97 | 2009-10-29 14:18:25 +0000 | [diff] [blame] | 4768 | err: |
Thomas Richter | db29868 | 2014-04-09 12:52:59 +0200 | [diff] [blame] | 4769 | bond_destroy_debugfs(); |
Jiri Pirko | 0a2a78c | 2013-10-18 17:43:33 +0200 | [diff] [blame] | 4770 | bond_netlink_fini(); |
Eric W. Biederman | 6639104 | 2009-10-29 23:58:54 +0000 | [diff] [blame] | 4771 | err_link: |
Eric W. Biederman | 1544974 | 2009-11-29 15:46:04 +0000 | [diff] [blame] | 4772 | unregister_pernet_subsys(&bond_net_ops); |
Eric W. Biederman | 88ead97 | 2009-10-29 14:18:25 +0000 | [diff] [blame] | 4773 | goto out; |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 4774 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4775 | } |
| 4776 | |
| 4777 | static void __exit bonding_exit(void) |
| 4778 | { |
| 4779 | unregister_netdevice_notifier(&bond_netdev_notifier); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4780 | |
Taku Izumi | f073c7c | 2010-12-09 15:17:13 +0000 | [diff] [blame] | 4781 | bond_destroy_debugfs(); |
Pavel Emelyanov | ae68c39 | 2008-05-02 17:49:39 -0700 | [diff] [blame] | 4782 | |
Jiri Pirko | 0a2a78c | 2013-10-18 17:43:33 +0200 | [diff] [blame] | 4783 | bond_netlink_fini(); |
nikolay@redhat.com | ffcdedb | 2013-04-06 00:54:37 +0000 | [diff] [blame] | 4784 | unregister_pernet_subsys(&bond_net_ops); |
Neil Horman | e843fa5 | 2010-10-13 16:01:50 +0000 | [diff] [blame] | 4785 | |
| 4786 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Nikolay Aleksandrov | 547942c | 2014-09-15 17:19:34 +0200 | [diff] [blame] | 4787 | /* Make sure we don't have an imbalance on our netpoll blocking */ |
Neil Horman | fb4fa76 | 2010-12-06 09:05:50 +0000 | [diff] [blame] | 4788 | WARN_ON(atomic_read(&netpoll_block_tx)); |
Neil Horman | e843fa5 | 2010-10-13 16:01:50 +0000 | [diff] [blame] | 4789 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4790 | } |
| 4791 | |
| 4792 | module_init(bonding_init); |
| 4793 | module_exit(bonding_exit); |
| 4794 | MODULE_LICENSE("GPL"); |
| 4795 | MODULE_VERSION(DRV_VERSION); |
| 4796 | MODULE_DESCRIPTION(DRV_DESCRIPTION ", v" DRV_VERSION); |
| 4797 | MODULE_AUTHOR("Thomas Davis, tadavis@lbl.gov and many others"); |