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/system.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #include <asm/dma.h> |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 57 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | #include <linux/errno.h> |
| 59 | #include <linux/netdevice.h> |
| 60 | #include <linux/inetdevice.h> |
Jay Vosburgh | a816c7c | 2007-02-28 17:03:37 -0800 | [diff] [blame] | 61 | #include <linux/igmp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | #include <linux/etherdevice.h> |
| 63 | #include <linux/skbuff.h> |
| 64 | #include <net/sock.h> |
| 65 | #include <linux/rtnetlink.h> |
| 66 | #include <linux/proc_fs.h> |
| 67 | #include <linux/seq_file.h> |
| 68 | #include <linux/smp.h> |
| 69 | #include <linux/if_ether.h> |
| 70 | #include <net/arp.h> |
| 71 | #include <linux/mii.h> |
| 72 | #include <linux/ethtool.h> |
| 73 | #include <linux/if_vlan.h> |
| 74 | #include <linux/if_bonding.h> |
David Sterba | b63bb73 | 2007-12-06 23:40:33 -0800 | [diff] [blame] | 75 | #include <linux/jiffies.h> |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 76 | #include <net/route.h> |
Eric W. Biederman | 457c4cb | 2007-09-12 12:01:34 +0200 | [diff] [blame] | 77 | #include <net/net_namespace.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | #include "bonding.h" |
| 79 | #include "bond_3ad.h" |
| 80 | #include "bond_alb.h" |
| 81 | |
| 82 | /*---------------------------- Module parameters ----------------------------*/ |
| 83 | |
| 84 | /* monitor all links that often (in milliseconds). <=0 disables monitoring */ |
| 85 | #define BOND_LINK_MON_INTERV 0 |
| 86 | #define BOND_LINK_ARP_INTERV 0 |
| 87 | |
| 88 | static int max_bonds = BOND_DEFAULT_MAX_BONDS; |
Moni Shoua | 7893b24 | 2008-05-17 21:10:12 -0700 | [diff] [blame] | 89 | static int num_grat_arp = 1; |
Brian Haley | 305d552 | 2008-11-04 17:51:14 -0800 | [diff] [blame] | 90 | static int num_unsol_na = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | static int miimon = BOND_LINK_MON_INTERV; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 92 | static int updelay; |
| 93 | static int downdelay; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | static int use_carrier = 1; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 95 | static char *mode; |
| 96 | static char *primary; |
| 97 | static char *lacp_rate; |
| 98 | static char *ad_select; |
| 99 | static char *xmit_hash_policy; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | static int arp_interval = BOND_LINK_ARP_INTERV; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 101 | static char *arp_ip_target[BOND_MAX_ARP_TARGETS]; |
| 102 | static char *arp_validate; |
| 103 | static char *fail_over_mac; |
Stephen Hemminger | d2991f7 | 2009-06-12 19:02:44 +0000 | [diff] [blame] | 104 | static struct bond_params bonding_defaults; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
| 106 | module_param(max_bonds, int, 0); |
| 107 | MODULE_PARM_DESC(max_bonds, "Max number of bonded devices"); |
Moni Shoua | 7893b24 | 2008-05-17 21:10:12 -0700 | [diff] [blame] | 108 | module_param(num_grat_arp, int, 0644); |
| 109 | MODULE_PARM_DESC(num_grat_arp, "Number of gratuitous ARP packets to send on failover event"); |
Brian Haley | 305d552 | 2008-11-04 17:51:14 -0800 | [diff] [blame] | 110 | module_param(num_unsol_na, int, 0644); |
| 111 | MODULE_PARM_DESC(num_unsol_na, "Number of unsolicited IPv6 Neighbor Advertisements packets to send on failover event"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | module_param(miimon, int, 0); |
| 113 | MODULE_PARM_DESC(miimon, "Link check interval in milliseconds"); |
| 114 | module_param(updelay, int, 0); |
| 115 | MODULE_PARM_DESC(updelay, "Delay before considering link up, in milliseconds"); |
| 116 | module_param(downdelay, int, 0); |
Mitch Williams | 2ac4766 | 2005-11-09 10:35:03 -0800 | [diff] [blame] | 117 | MODULE_PARM_DESC(downdelay, "Delay before considering link down, " |
| 118 | "in milliseconds"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | module_param(use_carrier, int, 0); |
Mitch Williams | 2ac4766 | 2005-11-09 10:35:03 -0800 | [diff] [blame] | 120 | MODULE_PARM_DESC(use_carrier, "Use netif_carrier_ok (vs MII ioctls) in miimon; " |
| 121 | "0 for off, 1 for on (default)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | module_param(mode, charp, 0); |
Mitch Williams | 2ac4766 | 2005-11-09 10:35:03 -0800 | [diff] [blame] | 123 | MODULE_PARM_DESC(mode, "Mode of operation : 0 for balance-rr, " |
| 124 | "1 for active-backup, 2 for balance-xor, " |
| 125 | "3 for broadcast, 4 for 802.3ad, 5 for balance-tlb, " |
| 126 | "6 for balance-alb"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | module_param(primary, charp, 0); |
| 128 | MODULE_PARM_DESC(primary, "Primary network device to use"); |
| 129 | module_param(lacp_rate, charp, 0); |
Mitch Williams | 2ac4766 | 2005-11-09 10:35:03 -0800 | [diff] [blame] | 130 | MODULE_PARM_DESC(lacp_rate, "LACPDU tx rate to request from 802.3ad partner " |
| 131 | "(slow/fast)"); |
Jay Vosburgh | fd989c8 | 2008-11-04 17:51:16 -0800 | [diff] [blame] | 132 | module_param(ad_select, charp, 0); |
| 133 | MODULE_PARM_DESC(ad_select, "803.ad aggregation selection logic: stable (0, default), bandwidth (1), count (2)"); |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 134 | module_param(xmit_hash_policy, charp, 0); |
Mitch Williams | 2ac4766 | 2005-11-09 10:35:03 -0800 | [diff] [blame] | 135 | MODULE_PARM_DESC(xmit_hash_policy, "XOR hashing method: 0 for layer 2 (default)" |
| 136 | ", 1 for layer 3+4"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | module_param(arp_interval, int, 0); |
| 138 | MODULE_PARM_DESC(arp_interval, "arp interval in milliseconds"); |
| 139 | module_param_array(arp_ip_target, charp, NULL, 0); |
| 140 | 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] | 141 | module_param(arp_validate, charp, 0); |
| 142 | MODULE_PARM_DESC(arp_validate, "validate src/dst of ARP probes: none (default), active, backup or all"); |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 143 | module_param(fail_over_mac, charp, 0); |
| 144 | MODULE_PARM_DESC(fail_over_mac, "For active-backup, do not set all slaves to the same MAC. none (default), active or follow"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | |
| 146 | /*----------------------------- Global variables ----------------------------*/ |
| 147 | |
Arjan van de Ven | f71e130 | 2006-03-03 21:33:57 -0500 | [diff] [blame] | 148 | static const char * const version = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n"; |
| 150 | |
Mitch Williams | 12479f9 | 2005-11-09 10:35:44 -0800 | [diff] [blame] | 151 | LIST_HEAD(bond_dev_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | |
| 153 | #ifdef CONFIG_PROC_FS |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 154 | static struct proc_dir_entry *bond_proc_dir; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | #endif |
| 156 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 157 | static __be32 arp_target[BOND_MAX_ARP_TARGETS]; |
| 158 | static int arp_ip_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | static int bond_mode = BOND_MODE_ROUNDROBIN; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 160 | static int xmit_hashtype = BOND_XMIT_POLICY_LAYER2; |
| 161 | static int lacp_fast; |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 162 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
Holger Eitzenberger | e97fd7c | 2008-12-09 23:10:38 -0800 | [diff] [blame] | 164 | const struct bond_parm_tbl bond_lacp_tbl[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | { "slow", AD_LACP_SLOW}, |
| 166 | { "fast", AD_LACP_FAST}, |
| 167 | { NULL, -1}, |
| 168 | }; |
| 169 | |
Holger Eitzenberger | e97fd7c | 2008-12-09 23:10:38 -0800 | [diff] [blame] | 170 | const struct bond_parm_tbl bond_mode_tbl[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | { "balance-rr", BOND_MODE_ROUNDROBIN}, |
| 172 | { "active-backup", BOND_MODE_ACTIVEBACKUP}, |
| 173 | { "balance-xor", BOND_MODE_XOR}, |
| 174 | { "broadcast", BOND_MODE_BROADCAST}, |
| 175 | { "802.3ad", BOND_MODE_8023AD}, |
| 176 | { "balance-tlb", BOND_MODE_TLB}, |
| 177 | { "balance-alb", BOND_MODE_ALB}, |
| 178 | { NULL, -1}, |
| 179 | }; |
| 180 | |
Holger Eitzenberger | e97fd7c | 2008-12-09 23:10:38 -0800 | [diff] [blame] | 181 | const struct bond_parm_tbl xmit_hashtype_tbl[] = { |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 182 | { "layer2", BOND_XMIT_POLICY_LAYER2}, |
| 183 | { "layer3+4", BOND_XMIT_POLICY_LAYER34}, |
Jay Vosburgh | 6f6652b | 2007-12-06 23:40:34 -0800 | [diff] [blame] | 184 | { "layer2+3", BOND_XMIT_POLICY_LAYER23}, |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 185 | { NULL, -1}, |
| 186 | }; |
| 187 | |
Holger Eitzenberger | e97fd7c | 2008-12-09 23:10:38 -0800 | [diff] [blame] | 188 | const struct bond_parm_tbl arp_validate_tbl[] = { |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 189 | { "none", BOND_ARP_VALIDATE_NONE}, |
| 190 | { "active", BOND_ARP_VALIDATE_ACTIVE}, |
| 191 | { "backup", BOND_ARP_VALIDATE_BACKUP}, |
| 192 | { "all", BOND_ARP_VALIDATE_ALL}, |
| 193 | { NULL, -1}, |
| 194 | }; |
| 195 | |
Holger Eitzenberger | e97fd7c | 2008-12-09 23:10:38 -0800 | [diff] [blame] | 196 | const struct bond_parm_tbl fail_over_mac_tbl[] = { |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 197 | { "none", BOND_FOM_NONE}, |
| 198 | { "active", BOND_FOM_ACTIVE}, |
| 199 | { "follow", BOND_FOM_FOLLOW}, |
| 200 | { NULL, -1}, |
| 201 | }; |
| 202 | |
Jay Vosburgh | fd989c8 | 2008-11-04 17:51:16 -0800 | [diff] [blame] | 203 | struct bond_parm_tbl ad_select_tbl[] = { |
| 204 | { "stable", BOND_AD_STABLE}, |
| 205 | { "bandwidth", BOND_AD_BANDWIDTH}, |
| 206 | { "count", BOND_AD_COUNT}, |
| 207 | { NULL, -1}, |
| 208 | }; |
| 209 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | /*-------------------------- Forward declarations ---------------------------*/ |
| 211 | |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 212 | static void bond_send_gratuitous_arp(struct bonding *bond); |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 213 | static int bond_init(struct net_device *bond_dev); |
Adrian Bunk | c50b85d | 2007-10-24 18:23:17 +0200 | [diff] [blame] | 214 | static void bond_deinit(struct net_device *bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | |
| 216 | /*---------------------------- General routines -----------------------------*/ |
| 217 | |
Adrian Bunk | 4ad072c | 2007-07-09 11:51:12 -0700 | [diff] [blame] | 218 | static const char *bond_mode_name(int mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | { |
Holger Eitzenberger | 77afc92 | 2008-12-09 23:08:09 -0800 | [diff] [blame] | 220 | static const char *names[] = { |
| 221 | [BOND_MODE_ROUNDROBIN] = "load balancing (round-robin)", |
| 222 | [BOND_MODE_ACTIVEBACKUP] = "fault-tolerance (active-backup)", |
| 223 | [BOND_MODE_XOR] = "load balancing (xor)", |
| 224 | [BOND_MODE_BROADCAST] = "fault-tolerance (broadcast)", |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 225 | [BOND_MODE_8023AD] = "IEEE 802.3ad Dynamic link aggregation", |
Holger Eitzenberger | 77afc92 | 2008-12-09 23:08:09 -0800 | [diff] [blame] | 226 | [BOND_MODE_TLB] = "transmit load balancing", |
| 227 | [BOND_MODE_ALB] = "adaptive load balancing", |
| 228 | }; |
| 229 | |
| 230 | if (mode < 0 || mode > BOND_MODE_ALB) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | return "unknown"; |
Holger Eitzenberger | 77afc92 | 2008-12-09 23:08:09 -0800 | [diff] [blame] | 232 | |
| 233 | return names[mode]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | /*---------------------------------- VLAN -----------------------------------*/ |
| 237 | |
| 238 | /** |
| 239 | * bond_add_vlan - add a new vlan id on bond |
| 240 | * @bond: bond that got the notification |
| 241 | * @vlan_id: the vlan id to add |
| 242 | * |
| 243 | * Returns -ENOMEM if allocation failed. |
| 244 | */ |
| 245 | static int bond_add_vlan(struct bonding *bond, unsigned short vlan_id) |
| 246 | { |
| 247 | struct vlan_entry *vlan; |
| 248 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 249 | pr_debug("bond: %s, vlan id %d\n", |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 250 | (bond ? bond->dev->name : "None"), vlan_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
Brian Haley | 305d552 | 2008-11-04 17:51:14 -0800 | [diff] [blame] | 252 | vlan = kzalloc(sizeof(struct vlan_entry), GFP_KERNEL); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 253 | if (!vlan) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
| 256 | INIT_LIST_HEAD(&vlan->vlan_list); |
| 257 | vlan->vlan_id = vlan_id; |
| 258 | |
| 259 | write_lock_bh(&bond->lock); |
| 260 | |
| 261 | list_add_tail(&vlan->vlan_list, &bond->vlan_list); |
| 262 | |
| 263 | write_unlock_bh(&bond->lock); |
| 264 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 265 | pr_debug("added VLAN ID %d on bond %s\n", vlan_id, bond->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | /** |
| 271 | * bond_del_vlan - delete a vlan id from bond |
| 272 | * @bond: bond that got the notification |
| 273 | * @vlan_id: the vlan id to delete |
| 274 | * |
| 275 | * returns -ENODEV if @vlan_id was not found in @bond. |
| 276 | */ |
| 277 | static int bond_del_vlan(struct bonding *bond, unsigned short vlan_id) |
| 278 | { |
Pavel Emelyanov | 0883bec | 2008-05-17 21:10:10 -0700 | [diff] [blame] | 279 | struct vlan_entry *vlan; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | int res = -ENODEV; |
| 281 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 282 | pr_debug("bond: %s, vlan id %d\n", bond->dev->name, vlan_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | |
| 284 | write_lock_bh(&bond->lock); |
| 285 | |
Pavel Emelyanov | 0883bec | 2008-05-17 21:10:10 -0700 | [diff] [blame] | 286 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | if (vlan->vlan_id == vlan_id) { |
| 288 | list_del(&vlan->vlan_list); |
| 289 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 290 | if (bond_is_lb(bond)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | bond_alb_clear_vlan(bond, vlan_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 293 | pr_debug("removed VLAN ID %d from bond %s\n", vlan_id, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | bond->dev->name); |
| 295 | |
| 296 | kfree(vlan); |
| 297 | |
| 298 | if (list_empty(&bond->vlan_list) && |
| 299 | (bond->slave_cnt == 0)) { |
| 300 | /* Last VLAN removed and no slaves, so |
| 301 | * restore block on adding VLANs. This will |
| 302 | * be removed once new slaves that are not |
| 303 | * VLAN challenged will be added. |
| 304 | */ |
| 305 | bond->dev->features |= NETIF_F_VLAN_CHALLENGED; |
| 306 | } |
| 307 | |
| 308 | res = 0; |
| 309 | goto out; |
| 310 | } |
| 311 | } |
| 312 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 313 | pr_debug("couldn't find VLAN ID %d in bond %s\n", vlan_id, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | bond->dev->name); |
| 315 | |
| 316 | out: |
| 317 | write_unlock_bh(&bond->lock); |
| 318 | return res; |
| 319 | } |
| 320 | |
| 321 | /** |
| 322 | * bond_has_challenged_slaves |
| 323 | * @bond: the bond we're working on |
| 324 | * |
| 325 | * Searches the slave list. Returns 1 if a vlan challenged slave |
| 326 | * was found, 0 otherwise. |
| 327 | * |
| 328 | * Assumes bond->lock is held. |
| 329 | */ |
| 330 | static int bond_has_challenged_slaves(struct bonding *bond) |
| 331 | { |
| 332 | struct slave *slave; |
| 333 | int i; |
| 334 | |
| 335 | bond_for_each_slave(bond, slave, i) { |
| 336 | if (slave->dev->features & NETIF_F_VLAN_CHALLENGED) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 337 | pr_debug("found VLAN challenged slave - %s\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | slave->dev->name); |
| 339 | return 1; |
| 340 | } |
| 341 | } |
| 342 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 343 | pr_debug("no VLAN challenged slaves found\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | return 0; |
| 345 | } |
| 346 | |
| 347 | /** |
| 348 | * bond_next_vlan - safely skip to the next item in the vlans list. |
| 349 | * @bond: the bond we're working on |
| 350 | * @curr: item we're advancing from |
| 351 | * |
| 352 | * Returns %NULL if list is empty, bond->next_vlan if @curr is %NULL, |
| 353 | * or @curr->next otherwise (even if it is @curr itself again). |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 354 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | * Caller must hold bond->lock |
| 356 | */ |
| 357 | struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr) |
| 358 | { |
| 359 | struct vlan_entry *next, *last; |
| 360 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 361 | if (list_empty(&bond->vlan_list)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
| 364 | if (!curr) { |
| 365 | next = list_entry(bond->vlan_list.next, |
| 366 | struct vlan_entry, vlan_list); |
| 367 | } else { |
| 368 | last = list_entry(bond->vlan_list.prev, |
| 369 | struct vlan_entry, vlan_list); |
| 370 | if (last == curr) { |
| 371 | next = list_entry(bond->vlan_list.next, |
| 372 | struct vlan_entry, vlan_list); |
| 373 | } else { |
| 374 | next = list_entry(curr->vlan_list.next, |
| 375 | struct vlan_entry, vlan_list); |
| 376 | } |
| 377 | } |
| 378 | |
| 379 | return next; |
| 380 | } |
| 381 | |
| 382 | /** |
| 383 | * bond_dev_queue_xmit - Prepare skb for xmit. |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 384 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | * @bond: bond device that got this skb for tx. |
| 386 | * @skb: hw accel VLAN tagged skb to transmit |
| 387 | * @slave_dev: slave that is supposed to xmit this skbuff |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 388 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | * When the bond gets an skb to transmit that is |
| 390 | * already hardware accelerated VLAN tagged, and it |
| 391 | * needs to relay this skb to a slave that is not |
| 392 | * hw accel capable, the skb needs to be "unaccelerated", |
| 393 | * i.e. strip the hwaccel tag and re-insert it as part |
| 394 | * of the payload. |
| 395 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 396 | int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, |
| 397 | struct net_device *slave_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | { |
Jay Vosburgh | 966bc6f | 2008-03-21 22:29:34 -0700 | [diff] [blame] | 399 | unsigned short uninitialized_var(vlan_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | |
| 401 | if (!list_empty(&bond->vlan_list) && |
| 402 | !(slave_dev->features & NETIF_F_HW_VLAN_TX) && |
| 403 | vlan_get_tag(skb, &vlan_id) == 0) { |
| 404 | skb->dev = slave_dev; |
| 405 | skb = vlan_put_tag(skb, vlan_id); |
| 406 | if (!skb) { |
| 407 | /* vlan_put_tag() frees the skb in case of error, |
| 408 | * so return success here so the calling functions |
| 409 | * won't attempt to free is again. |
| 410 | */ |
| 411 | return 0; |
| 412 | } |
| 413 | } else { |
| 414 | skb->dev = slave_dev; |
| 415 | } |
| 416 | |
| 417 | skb->priority = 1; |
| 418 | dev_queue_xmit(skb); |
| 419 | |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | /* |
| 424 | * In the following 3 functions, bond_vlan_rx_register(), bond_vlan_rx_add_vid |
| 425 | * and bond_vlan_rx_kill_vid, We don't protect the slave list iteration with a |
| 426 | * lock because: |
| 427 | * a. This operation is performed in IOCTL context, |
| 428 | * b. The operation is protected by the RTNL semaphore in the 8021q code, |
| 429 | * c. Holding a lock with BH disabled while directly calling a base driver |
| 430 | * entry point is generally a BAD idea. |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 431 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | * The design of synchronization/protection for this operation in the 8021q |
| 433 | * module is good for one or more VLAN devices over a single physical device |
| 434 | * and cannot be extended for a teaming solution like bonding, so there is a |
| 435 | * potential race condition here where a net device from the vlan group might |
| 436 | * be referenced (either by a base driver or the 8021q code) while it is being |
| 437 | * removed from the system. However, it turns out we're not making matters |
| 438 | * worse, and if it works for regular VLAN usage it will work here too. |
| 439 | */ |
| 440 | |
| 441 | /** |
| 442 | * bond_vlan_rx_register - Propagates registration to slaves |
| 443 | * @bond_dev: bonding net device that got called |
| 444 | * @grp: vlan group being registered |
| 445 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 446 | static void bond_vlan_rx_register(struct net_device *bond_dev, |
| 447 | struct vlan_group *grp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 449 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | struct slave *slave; |
| 451 | int i; |
| 452 | |
| 453 | bond->vlgrp = grp; |
| 454 | |
| 455 | bond_for_each_slave(bond, slave, i) { |
| 456 | struct net_device *slave_dev = slave->dev; |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 457 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | |
| 459 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 460 | slave_ops->ndo_vlan_rx_register) { |
| 461 | slave_ops->ndo_vlan_rx_register(slave_dev, grp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | } |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | /** |
| 467 | * bond_vlan_rx_add_vid - Propagates adding an id to slaves |
| 468 | * @bond_dev: bonding net device that got called |
| 469 | * @vid: vlan id being added |
| 470 | */ |
| 471 | static void bond_vlan_rx_add_vid(struct net_device *bond_dev, uint16_t vid) |
| 472 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 473 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | struct slave *slave; |
| 475 | int i, res; |
| 476 | |
| 477 | bond_for_each_slave(bond, slave, i) { |
| 478 | struct net_device *slave_dev = slave->dev; |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 479 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
| 481 | if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 482 | slave_ops->ndo_vlan_rx_add_vid) { |
| 483 | slave_ops->ndo_vlan_rx_add_vid(slave_dev, vid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | } |
| 485 | } |
| 486 | |
| 487 | res = bond_add_vlan(bond, vid); |
| 488 | if (res) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 489 | pr_err(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 490 | ": %s: Error: Failed to add vlan id %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | bond_dev->name, vid); |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | /** |
| 496 | * bond_vlan_rx_kill_vid - Propagates deleting an id to slaves |
| 497 | * @bond_dev: bonding net device that got called |
| 498 | * @vid: vlan id being removed |
| 499 | */ |
| 500 | static void bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid) |
| 501 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 502 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | struct slave *slave; |
| 504 | struct net_device *vlan_dev; |
| 505 | int i, res; |
| 506 | |
| 507 | bond_for_each_slave(bond, slave, i) { |
| 508 | struct net_device *slave_dev = slave->dev; |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 509 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | |
| 511 | if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 512 | slave_ops->ndo_vlan_rx_kill_vid) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | /* Save and then restore vlan_dev in the grp array, |
| 514 | * since the slave's driver might clear it. |
| 515 | */ |
Dan Aloni | 5c15bde | 2007-03-02 20:44:51 -0800 | [diff] [blame] | 516 | vlan_dev = vlan_group_get_device(bond->vlgrp, vid); |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 517 | slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vid); |
Dan Aloni | 5c15bde | 2007-03-02 20:44:51 -0800 | [diff] [blame] | 518 | vlan_group_set_device(bond->vlgrp, vid, vlan_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | } |
| 520 | } |
| 521 | |
| 522 | res = bond_del_vlan(bond, vid); |
| 523 | if (res) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 524 | pr_err(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 525 | ": %s: Error: Failed to remove vlan id %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | bond_dev->name, vid); |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | static void bond_add_vlans_on_slave(struct bonding *bond, struct net_device *slave_dev) |
| 531 | { |
| 532 | struct vlan_entry *vlan; |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 533 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
| 535 | write_lock_bh(&bond->lock); |
| 536 | |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 537 | if (list_empty(&bond->vlan_list)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | |
| 540 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 541 | slave_ops->ndo_vlan_rx_register) |
| 542 | slave_ops->ndo_vlan_rx_register(slave_dev, bond->vlgrp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | |
| 544 | if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 545 | !(slave_ops->ndo_vlan_rx_add_vid)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 548 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) |
| 549 | slave_ops->ndo_vlan_rx_add_vid(slave_dev, vlan->vlan_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | |
| 551 | out: |
| 552 | write_unlock_bh(&bond->lock); |
| 553 | } |
| 554 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 555 | static void bond_del_vlans_from_slave(struct bonding *bond, |
| 556 | struct net_device *slave_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | { |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 558 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | struct vlan_entry *vlan; |
| 560 | struct net_device *vlan_dev; |
| 561 | |
| 562 | write_lock_bh(&bond->lock); |
| 563 | |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 564 | if (list_empty(&bond->vlan_list)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
| 567 | if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 568 | !(slave_ops->ndo_vlan_rx_kill_vid)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | goto unreg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | |
| 571 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
| 572 | /* Save and then restore vlan_dev in the grp array, |
| 573 | * since the slave's driver might clear it. |
| 574 | */ |
Dan Aloni | 5c15bde | 2007-03-02 20:44:51 -0800 | [diff] [blame] | 575 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 576 | slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vlan->vlan_id); |
Dan Aloni | 5c15bde | 2007-03-02 20:44:51 -0800 | [diff] [blame] | 577 | vlan_group_set_device(bond->vlgrp, vlan->vlan_id, vlan_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | unreg: |
| 581 | if ((slave_dev->features & NETIF_F_HW_VLAN_RX) && |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 582 | slave_ops->ndo_vlan_rx_register) |
| 583 | slave_ops->ndo_vlan_rx_register(slave_dev, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
| 585 | out: |
| 586 | write_unlock_bh(&bond->lock); |
| 587 | } |
| 588 | |
| 589 | /*------------------------------- Link status -------------------------------*/ |
| 590 | |
| 591 | /* |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 592 | * Set the carrier state for the master according to the state of its |
| 593 | * slaves. If any slaves are up, the master is up. In 802.3ad mode, |
| 594 | * do special 802.3ad magic. |
| 595 | * |
| 596 | * Returns zero if carrier state does not change, nonzero if it does. |
| 597 | */ |
| 598 | static int bond_set_carrier(struct bonding *bond) |
| 599 | { |
| 600 | struct slave *slave; |
| 601 | int i; |
| 602 | |
| 603 | if (bond->slave_cnt == 0) |
| 604 | goto down; |
| 605 | |
| 606 | if (bond->params.mode == BOND_MODE_8023AD) |
| 607 | return bond_3ad_set_carrier(bond); |
| 608 | |
| 609 | bond_for_each_slave(bond, slave, i) { |
| 610 | if (slave->link == BOND_LINK_UP) { |
| 611 | if (!netif_carrier_ok(bond->dev)) { |
| 612 | netif_carrier_on(bond->dev); |
| 613 | return 1; |
| 614 | } |
| 615 | return 0; |
| 616 | } |
| 617 | } |
| 618 | |
| 619 | down: |
| 620 | if (netif_carrier_ok(bond->dev)) { |
| 621 | netif_carrier_off(bond->dev); |
| 622 | return 1; |
| 623 | } |
| 624 | return 0; |
| 625 | } |
| 626 | |
| 627 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | * Get link speed and duplex from the slave's base driver |
| 629 | * using ethtool. If for some reason the call fails or the |
| 630 | * values are invalid, fake speed and duplex to 100/Full |
| 631 | * and return error. |
| 632 | */ |
| 633 | static int bond_update_speed_duplex(struct slave *slave) |
| 634 | { |
| 635 | struct net_device *slave_dev = slave->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | struct ethtool_cmd etool; |
Matthew Wilcox | 61a44b9 | 2007-07-31 14:00:02 -0700 | [diff] [blame] | 637 | int res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | |
| 639 | /* Fake speed and duplex */ |
| 640 | slave->speed = SPEED_100; |
| 641 | slave->duplex = DUPLEX_FULL; |
| 642 | |
Matthew Wilcox | 61a44b9 | 2007-07-31 14:00:02 -0700 | [diff] [blame] | 643 | if (!slave_dev->ethtool_ops || !slave_dev->ethtool_ops->get_settings) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | |
Matthew Wilcox | 61a44b9 | 2007-07-31 14:00:02 -0700 | [diff] [blame] | 646 | res = slave_dev->ethtool_ops->get_settings(slave_dev, &etool); |
| 647 | if (res < 0) |
| 648 | return -1; |
| 649 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | switch (etool.speed) { |
| 651 | case SPEED_10: |
| 652 | case SPEED_100: |
| 653 | case SPEED_1000: |
Jay Vosburgh | 94dbffd | 2006-09-22 21:52:15 -0700 | [diff] [blame] | 654 | case SPEED_10000: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | break; |
| 656 | default: |
| 657 | return -1; |
| 658 | } |
| 659 | |
| 660 | switch (etool.duplex) { |
| 661 | case DUPLEX_FULL: |
| 662 | case DUPLEX_HALF: |
| 663 | break; |
| 664 | default: |
| 665 | return -1; |
| 666 | } |
| 667 | |
| 668 | slave->speed = etool.speed; |
| 669 | slave->duplex = etool.duplex; |
| 670 | |
| 671 | return 0; |
| 672 | } |
| 673 | |
| 674 | /* |
| 675 | * if <dev> supports MII link status reporting, check its link status. |
| 676 | * |
| 677 | * We either do MII/ETHTOOL ioctls, or check netif_carrier_ok(), |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 678 | * depending upon the setting of the use_carrier parameter. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | * |
| 680 | * Return either BMSR_LSTATUS, meaning that the link is up (or we |
| 681 | * can't tell and just pretend it is), or 0, meaning that the link is |
| 682 | * down. |
| 683 | * |
| 684 | * If reporting is non-zero, instead of faking link up, return -1 if |
| 685 | * both ETHTOOL and MII ioctls fail (meaning the device does not |
| 686 | * support them). If use_carrier is set, return whatever it says. |
| 687 | * It'd be nice if there was a good way to tell if a driver supports |
| 688 | * netif_carrier, but there really isn't. |
| 689 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 690 | static int bond_check_dev_link(struct bonding *bond, |
| 691 | struct net_device *slave_dev, int reporting) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | { |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 693 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 694 | static int (*ioctl)(struct net_device *, struct ifreq *, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | struct ifreq ifr; |
| 696 | struct mii_ioctl_data *mii; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 698 | if (bond->params.use_carrier) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | return netif_carrier_ok(slave_dev) ? BMSR_LSTATUS : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | |
Jiri Pirko | 29112f4 | 2009-04-24 01:58:23 +0000 | [diff] [blame] | 701 | /* Try to get link status using Ethtool first. */ |
| 702 | if (slave_dev->ethtool_ops) { |
| 703 | if (slave_dev->ethtool_ops->get_link) { |
| 704 | u32 link; |
| 705 | |
| 706 | link = slave_dev->ethtool_ops->get_link(slave_dev); |
| 707 | |
| 708 | return link ? BMSR_LSTATUS : 0; |
| 709 | } |
| 710 | } |
| 711 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 712 | /* Ethtool can't be used, fallback to MII ioctls. */ |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 713 | ioctl = slave_ops->ndo_do_ioctl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | if (ioctl) { |
| 715 | /* TODO: set pointer to correct ioctl on a per team member */ |
| 716 | /* bases to make this more efficient. that is, once */ |
| 717 | /* we determine the correct ioctl, we will always */ |
| 718 | /* call it and not the others for that team */ |
| 719 | /* member. */ |
| 720 | |
| 721 | /* |
| 722 | * We cannot assume that SIOCGMIIPHY will also read a |
| 723 | * register; not all network drivers (e.g., e100) |
| 724 | * support that. |
| 725 | */ |
| 726 | |
| 727 | /* Yes, the mii is overlaid on the ifreq.ifr_ifru */ |
| 728 | strncpy(ifr.ifr_name, slave_dev->name, IFNAMSIZ); |
| 729 | mii = if_mii(&ifr); |
| 730 | if (IOCTL(slave_dev, &ifr, SIOCGMIIPHY) == 0) { |
| 731 | mii->reg_num = MII_BMSR; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 732 | if (IOCTL(slave_dev, &ifr, SIOCGMIIREG) == 0) |
| 733 | return mii->val_out & BMSR_LSTATUS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | } |
| 735 | } |
| 736 | |
Matthew Wilcox | 61a44b9 | 2007-07-31 14:00:02 -0700 | [diff] [blame] | 737 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | * If reporting, report that either there's no dev->do_ioctl, |
Matthew Wilcox | 61a44b9 | 2007-07-31 14:00:02 -0700 | [diff] [blame] | 739 | * or both SIOCGMIIREG and get_link failed (meaning that we |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | * cannot report link status). If not reporting, pretend |
| 741 | * we're ok. |
| 742 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 743 | return reporting ? -1 : BMSR_LSTATUS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | } |
| 745 | |
| 746 | /*----------------------------- Multicast list ------------------------------*/ |
| 747 | |
| 748 | /* |
| 749 | * Returns 0 if dmi1 and dmi2 are the same, non-0 otherwise |
| 750 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 751 | static inline int bond_is_dmi_same(const struct dev_mc_list *dmi1, |
| 752 | const struct dev_mc_list *dmi2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | { |
| 754 | return memcmp(dmi1->dmi_addr, dmi2->dmi_addr, dmi1->dmi_addrlen) == 0 && |
| 755 | dmi1->dmi_addrlen == dmi2->dmi_addrlen; |
| 756 | } |
| 757 | |
| 758 | /* |
| 759 | * returns dmi entry if found, NULL otherwise |
| 760 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 761 | static struct dev_mc_list *bond_mc_list_find_dmi(struct dev_mc_list *dmi, |
| 762 | struct dev_mc_list *mc_list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | { |
| 764 | struct dev_mc_list *idmi; |
| 765 | |
| 766 | for (idmi = mc_list; idmi; idmi = idmi->next) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 767 | if (bond_is_dmi_same(dmi, idmi)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | return idmi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | } |
| 770 | |
| 771 | return NULL; |
| 772 | } |
| 773 | |
| 774 | /* |
| 775 | * Push the promiscuity flag down to appropriate slaves |
| 776 | */ |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 777 | static int bond_set_promiscuity(struct bonding *bond, int inc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 779 | int err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | if (USES_PRIMARY(bond->params.mode)) { |
| 781 | /* write lock already acquired */ |
| 782 | if (bond->curr_active_slave) { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 783 | err = dev_set_promiscuity(bond->curr_active_slave->dev, |
| 784 | inc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | } |
| 786 | } else { |
| 787 | struct slave *slave; |
| 788 | int i; |
| 789 | bond_for_each_slave(bond, slave, i) { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 790 | err = dev_set_promiscuity(slave->dev, inc); |
| 791 | if (err) |
| 792 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | } |
| 794 | } |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 795 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | } |
| 797 | |
| 798 | /* |
| 799 | * Push the allmulti flag down to all slaves |
| 800 | */ |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 801 | static int bond_set_allmulti(struct bonding *bond, int inc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 803 | int err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | if (USES_PRIMARY(bond->params.mode)) { |
| 805 | /* write lock already acquired */ |
| 806 | if (bond->curr_active_slave) { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 807 | err = dev_set_allmulti(bond->curr_active_slave->dev, |
| 808 | inc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | } |
| 810 | } else { |
| 811 | struct slave *slave; |
| 812 | int i; |
| 813 | bond_for_each_slave(bond, slave, i) { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 814 | err = dev_set_allmulti(slave->dev, inc); |
| 815 | if (err) |
| 816 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | } |
| 818 | } |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 819 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | } |
| 821 | |
| 822 | /* |
| 823 | * Add a Multicast address to slaves |
| 824 | * according to mode |
| 825 | */ |
| 826 | static void bond_mc_add(struct bonding *bond, void *addr, int alen) |
| 827 | { |
| 828 | if (USES_PRIMARY(bond->params.mode)) { |
| 829 | /* write lock already acquired */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 830 | if (bond->curr_active_slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | dev_mc_add(bond->curr_active_slave->dev, addr, alen, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | } else { |
| 833 | struct slave *slave; |
| 834 | int i; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 835 | |
| 836 | bond_for_each_slave(bond, slave, i) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | dev_mc_add(slave->dev, addr, alen, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | } |
| 839 | } |
| 840 | |
| 841 | /* |
| 842 | * Remove a multicast address from slave |
| 843 | * according to mode |
| 844 | */ |
| 845 | static void bond_mc_delete(struct bonding *bond, void *addr, int alen) |
| 846 | { |
| 847 | if (USES_PRIMARY(bond->params.mode)) { |
| 848 | /* write lock already acquired */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 849 | if (bond->curr_active_slave) |
| 850 | dev_mc_delete(bond->curr_active_slave->dev, addr, |
| 851 | alen, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | } else { |
| 853 | struct slave *slave; |
| 854 | int i; |
| 855 | bond_for_each_slave(bond, slave, i) { |
| 856 | dev_mc_delete(slave->dev, addr, alen, 0); |
| 857 | } |
| 858 | } |
| 859 | } |
| 860 | |
Jay Vosburgh | a816c7c | 2007-02-28 17:03:37 -0800 | [diff] [blame] | 861 | |
| 862 | /* |
| 863 | * Retrieve the list of registered multicast addresses for the bonding |
| 864 | * device and retransmit an IGMP JOIN request to the current active |
| 865 | * slave. |
| 866 | */ |
| 867 | static void bond_resend_igmp_join_requests(struct bonding *bond) |
| 868 | { |
| 869 | struct in_device *in_dev; |
| 870 | struct ip_mc_list *im; |
| 871 | |
| 872 | rcu_read_lock(); |
| 873 | in_dev = __in_dev_get_rcu(bond->dev); |
| 874 | if (in_dev) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 875 | for (im = in_dev->mc_list; im; im = im->next) |
Jay Vosburgh | a816c7c | 2007-02-28 17:03:37 -0800 | [diff] [blame] | 876 | ip_mc_rejoin_group(im); |
Jay Vosburgh | a816c7c | 2007-02-28 17:03:37 -0800 | [diff] [blame] | 877 | } |
| 878 | |
| 879 | rcu_read_unlock(); |
| 880 | } |
| 881 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | /* |
| 883 | * Totally destroys the mc_list in bond |
| 884 | */ |
| 885 | static void bond_mc_list_destroy(struct bonding *bond) |
| 886 | { |
| 887 | struct dev_mc_list *dmi; |
| 888 | |
| 889 | dmi = bond->mc_list; |
| 890 | while (dmi) { |
| 891 | bond->mc_list = dmi->next; |
| 892 | kfree(dmi); |
| 893 | dmi = bond->mc_list; |
| 894 | } |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 895 | |
| 896 | bond->mc_list = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | } |
| 898 | |
| 899 | /* |
| 900 | * Copy all the Multicast addresses from src to the bonding device dst |
| 901 | */ |
Randy Dunlap | de54f39 | 2005-10-04 22:39:41 -0700 | [diff] [blame] | 902 | static int bond_mc_list_copy(struct dev_mc_list *mc_list, struct bonding *bond, |
Al Viro | dd0fc66 | 2005-10-07 07:46:04 +0100 | [diff] [blame] | 903 | gfp_t gfp_flag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | { |
| 905 | struct dev_mc_list *dmi, *new_dmi; |
| 906 | |
| 907 | for (dmi = mc_list; dmi; dmi = dmi->next) { |
Randy Dunlap | de54f39 | 2005-10-04 22:39:41 -0700 | [diff] [blame] | 908 | new_dmi = kmalloc(sizeof(struct dev_mc_list), gfp_flag); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | |
| 910 | if (!new_dmi) { |
| 911 | /* FIXME: Potential memory leak !!! */ |
| 912 | return -ENOMEM; |
| 913 | } |
| 914 | |
| 915 | new_dmi->next = bond->mc_list; |
| 916 | bond->mc_list = new_dmi; |
| 917 | new_dmi->dmi_addrlen = dmi->dmi_addrlen; |
| 918 | memcpy(new_dmi->dmi_addr, dmi->dmi_addr, dmi->dmi_addrlen); |
| 919 | new_dmi->dmi_users = dmi->dmi_users; |
| 920 | new_dmi->dmi_gusers = dmi->dmi_gusers; |
| 921 | } |
| 922 | |
| 923 | return 0; |
| 924 | } |
| 925 | |
| 926 | /* |
| 927 | * flush all members of flush->mc_list from device dev->mc_list |
| 928 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 929 | static void bond_mc_list_flush(struct net_device *bond_dev, |
| 930 | struct net_device *slave_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 932 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | struct dev_mc_list *dmi; |
| 934 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 935 | for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | dev_mc_delete(slave_dev, dmi->dmi_addr, dmi->dmi_addrlen, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | |
| 938 | if (bond->params.mode == BOND_MODE_8023AD) { |
| 939 | /* del lacpdu mc addr from mc list */ |
| 940 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; |
| 941 | |
| 942 | dev_mc_delete(slave_dev, lacpdu_multicast, ETH_ALEN, 0); |
| 943 | } |
| 944 | } |
| 945 | |
| 946 | /*--------------------------- Active slave change ---------------------------*/ |
| 947 | |
| 948 | /* |
| 949 | * Update the mc list and multicast-related flags for the new and |
| 950 | * old active slaves (if any) according to the multicast mode, and |
| 951 | * promiscuous flags unconditionally. |
| 952 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 953 | static void bond_mc_swap(struct bonding *bond, struct slave *new_active, |
| 954 | struct slave *old_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | { |
| 956 | struct dev_mc_list *dmi; |
| 957 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 958 | if (!USES_PRIMARY(bond->params.mode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | /* nothing to do - mc list is already up-to-date on |
| 960 | * all slaves |
| 961 | */ |
| 962 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | |
| 964 | if (old_active) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 965 | if (bond->dev->flags & IFF_PROMISC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | dev_set_promiscuity(old_active->dev, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 968 | if (bond->dev->flags & IFF_ALLMULTI) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | dev_set_allmulti(old_active->dev, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 971 | for (dmi = bond->dev->mc_list; dmi; dmi = dmi->next) |
| 972 | dev_mc_delete(old_active->dev, dmi->dmi_addr, |
| 973 | dmi->dmi_addrlen, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | } |
| 975 | |
| 976 | if (new_active) { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 977 | /* FIXME: Signal errors upstream. */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 978 | if (bond->dev->flags & IFF_PROMISC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | dev_set_promiscuity(new_active->dev, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 981 | if (bond->dev->flags & IFF_ALLMULTI) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | dev_set_allmulti(new_active->dev, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 984 | for (dmi = bond->dev->mc_list; dmi; dmi = dmi->next) |
| 985 | dev_mc_add(new_active->dev, dmi->dmi_addr, |
| 986 | dmi->dmi_addrlen, 0); |
Jay Vosburgh | a816c7c | 2007-02-28 17:03:37 -0800 | [diff] [blame] | 987 | bond_resend_igmp_join_requests(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | } |
| 989 | } |
| 990 | |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 991 | /* |
| 992 | * bond_do_fail_over_mac |
| 993 | * |
| 994 | * Perform special MAC address swapping for fail_over_mac settings |
| 995 | * |
| 996 | * Called with RTNL, bond->lock for read, curr_slave_lock for write_bh. |
| 997 | */ |
| 998 | static void bond_do_fail_over_mac(struct bonding *bond, |
| 999 | struct slave *new_active, |
| 1000 | struct slave *old_active) |
Hannes Eder | 1f78d9f | 2009-02-14 11:15:33 +0000 | [diff] [blame] | 1001 | __releases(&bond->curr_slave_lock) |
| 1002 | __releases(&bond->lock) |
| 1003 | __acquires(&bond->lock) |
| 1004 | __acquires(&bond->curr_slave_lock) |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1005 | { |
| 1006 | u8 tmp_mac[ETH_ALEN]; |
| 1007 | struct sockaddr saddr; |
| 1008 | int rv; |
| 1009 | |
| 1010 | switch (bond->params.fail_over_mac) { |
| 1011 | case BOND_FOM_ACTIVE: |
| 1012 | if (new_active) |
| 1013 | memcpy(bond->dev->dev_addr, new_active->dev->dev_addr, |
| 1014 | new_active->dev->addr_len); |
| 1015 | break; |
| 1016 | case BOND_FOM_FOLLOW: |
| 1017 | /* |
| 1018 | * if new_active && old_active, swap them |
| 1019 | * if just old_active, do nothing (going to no active slave) |
| 1020 | * if just new_active, set new_active to bond's MAC |
| 1021 | */ |
| 1022 | if (!new_active) |
| 1023 | return; |
| 1024 | |
| 1025 | write_unlock_bh(&bond->curr_slave_lock); |
| 1026 | read_unlock(&bond->lock); |
| 1027 | |
| 1028 | if (old_active) { |
| 1029 | memcpy(tmp_mac, new_active->dev->dev_addr, ETH_ALEN); |
| 1030 | memcpy(saddr.sa_data, old_active->dev->dev_addr, |
| 1031 | ETH_ALEN); |
| 1032 | saddr.sa_family = new_active->dev->type; |
| 1033 | } else { |
| 1034 | memcpy(saddr.sa_data, bond->dev->dev_addr, ETH_ALEN); |
| 1035 | saddr.sa_family = bond->dev->type; |
| 1036 | } |
| 1037 | |
| 1038 | rv = dev_set_mac_address(new_active->dev, &saddr); |
| 1039 | if (rv) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1040 | pr_err(DRV_NAME |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1041 | ": %s: Error %d setting MAC of slave %s\n", |
| 1042 | bond->dev->name, -rv, new_active->dev->name); |
| 1043 | goto out; |
| 1044 | } |
| 1045 | |
| 1046 | if (!old_active) |
| 1047 | goto out; |
| 1048 | |
| 1049 | memcpy(saddr.sa_data, tmp_mac, ETH_ALEN); |
| 1050 | saddr.sa_family = old_active->dev->type; |
| 1051 | |
| 1052 | rv = dev_set_mac_address(old_active->dev, &saddr); |
| 1053 | if (rv) |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1054 | pr_err(DRV_NAME |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1055 | ": %s: Error %d setting MAC of slave %s\n", |
| 1056 | bond->dev->name, -rv, new_active->dev->name); |
| 1057 | out: |
| 1058 | read_lock(&bond->lock); |
| 1059 | write_lock_bh(&bond->curr_slave_lock); |
| 1060 | break; |
| 1061 | default: |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1062 | pr_err(DRV_NAME |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1063 | ": %s: bond_do_fail_over_mac impossible: bad policy %d\n", |
| 1064 | bond->dev->name, bond->params.fail_over_mac); |
| 1065 | break; |
| 1066 | } |
| 1067 | |
| 1068 | } |
| 1069 | |
| 1070 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | /** |
| 1072 | * find_best_interface - select the best available slave to be the active one |
| 1073 | * @bond: our bonding struct |
| 1074 | * |
| 1075 | * Warning: Caller must hold curr_slave_lock for writing. |
| 1076 | */ |
| 1077 | static struct slave *bond_find_best_slave(struct bonding *bond) |
| 1078 | { |
| 1079 | struct slave *new_active, *old_active; |
| 1080 | struct slave *bestslave = NULL; |
| 1081 | int mintime = bond->params.updelay; |
| 1082 | int i; |
| 1083 | |
| 1084 | new_active = old_active = bond->curr_active_slave; |
| 1085 | |
| 1086 | if (!new_active) { /* there were no active slaves left */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1087 | if (bond->slave_cnt > 0) /* found one slave */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | new_active = bond->first_slave; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1089 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | return NULL; /* still no slave, return NULL */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | } |
| 1092 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1093 | /* |
| 1094 | * first try the primary link; if arping, a link must tx/rx |
| 1095 | * traffic before it can be considered the curr_active_slave. |
| 1096 | * also, we would skip slaves between the curr_active_slave |
| 1097 | * and primary_slave that may be up and able to arp |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | */ |
| 1099 | if ((bond->primary_slave) && |
| 1100 | (!bond->params.arp_interval) && |
| 1101 | (IS_UP(bond->primary_slave->dev))) { |
| 1102 | new_active = bond->primary_slave; |
| 1103 | } |
| 1104 | |
| 1105 | /* remember where to stop iterating over the slaves */ |
| 1106 | old_active = new_active; |
| 1107 | |
| 1108 | bond_for_each_slave_from(bond, new_active, i, old_active) { |
| 1109 | if (IS_UP(new_active->dev)) { |
| 1110 | if (new_active->link == BOND_LINK_UP) { |
| 1111 | return new_active; |
| 1112 | } else if (new_active->link == BOND_LINK_BACK) { |
| 1113 | /* link up, but waiting for stabilization */ |
| 1114 | if (new_active->delay < mintime) { |
| 1115 | mintime = new_active->delay; |
| 1116 | bestslave = new_active; |
| 1117 | } |
| 1118 | } |
| 1119 | } |
| 1120 | } |
| 1121 | |
| 1122 | return bestslave; |
| 1123 | } |
| 1124 | |
| 1125 | /** |
| 1126 | * change_active_interface - change the active slave into the specified one |
| 1127 | * @bond: our bonding struct |
| 1128 | * @new: the new slave to make the active one |
| 1129 | * |
| 1130 | * Set the new slave to the bond's settings and unset them on the old |
| 1131 | * curr_active_slave. |
| 1132 | * Setting include flags, mc-list, promiscuity, allmulti, etc. |
| 1133 | * |
| 1134 | * If @new's link state is %BOND_LINK_BACK we'll set it to %BOND_LINK_UP, |
| 1135 | * because it is apparently the best available slave we have, even though its |
| 1136 | * updelay hasn't timed out yet. |
| 1137 | * |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1138 | * If new_active is not NULL, caller must hold bond->lock for read and |
| 1139 | * curr_slave_lock for write_bh. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | */ |
Mitch Williams | a77b532 | 2005-11-09 10:35:51 -0800 | [diff] [blame] | 1141 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | { |
| 1143 | struct slave *old_active = bond->curr_active_slave; |
| 1144 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1145 | if (old_active == new_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | |
| 1148 | if (new_active) { |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 1149 | new_active->jiffies = jiffies; |
| 1150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | if (new_active->link == BOND_LINK_BACK) { |
| 1152 | if (USES_PRIMARY(bond->params.mode)) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1153 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | ": %s: making interface %s the new " |
| 1155 | "active one %d ms earlier.\n", |
| 1156 | bond->dev->name, new_active->dev->name, |
| 1157 | (bond->params.updelay - new_active->delay) * bond->params.miimon); |
| 1158 | } |
| 1159 | |
| 1160 | new_active->delay = 0; |
| 1161 | new_active->link = BOND_LINK_UP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1163 | if (bond->params.mode == BOND_MODE_8023AD) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | bond_3ad_handle_link_change(new_active, BOND_LINK_UP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 1166 | if (bond_is_lb(bond)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | bond_alb_handle_link_change(bond, new_active, BOND_LINK_UP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | } else { |
| 1169 | if (USES_PRIMARY(bond->params.mode)) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1170 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | ": %s: making interface %s the new " |
| 1172 | "active one.\n", |
| 1173 | bond->dev->name, new_active->dev->name); |
| 1174 | } |
| 1175 | } |
| 1176 | } |
| 1177 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1178 | if (USES_PRIMARY(bond->params.mode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | bond_mc_swap(bond, new_active, old_active); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 1181 | if (bond_is_lb(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | bond_alb_handle_active_change(bond, new_active); |
Jay Vosburgh | 8f903c7 | 2006-02-21 16:36:44 -0800 | [diff] [blame] | 1183 | if (old_active) |
| 1184 | bond_set_slave_inactive_flags(old_active); |
| 1185 | if (new_active) |
| 1186 | bond_set_slave_active_flags(new_active); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | } else { |
| 1188 | bond->curr_active_slave = new_active; |
| 1189 | } |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 1190 | |
| 1191 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1192 | if (old_active) |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 1193 | bond_set_slave_inactive_flags(old_active); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 1194 | |
| 1195 | if (new_active) { |
| 1196 | bond_set_slave_active_flags(new_active); |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1197 | |
Or Gerlitz | 709f8a4 | 2008-06-13 18:12:01 -0700 | [diff] [blame] | 1198 | if (bond->params.fail_over_mac) |
| 1199 | bond_do_fail_over_mac(bond, new_active, |
| 1200 | old_active); |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1201 | |
Or Gerlitz | 709f8a4 | 2008-06-13 18:12:01 -0700 | [diff] [blame] | 1202 | bond->send_grat_arp = bond->params.num_grat_arp; |
Jay Vosburgh | b59f9f7 | 2008-06-13 18:12:03 -0700 | [diff] [blame] | 1203 | bond_send_gratuitous_arp(bond); |
Or Gerlitz | 01f3109 | 2008-06-13 18:12:02 -0700 | [diff] [blame] | 1204 | |
Brian Haley | 305d552 | 2008-11-04 17:51:14 -0800 | [diff] [blame] | 1205 | bond->send_unsol_na = bond->params.num_unsol_na; |
| 1206 | bond_send_unsolicited_na(bond); |
| 1207 | |
Or Gerlitz | 01f3109 | 2008-06-13 18:12:02 -0700 | [diff] [blame] | 1208 | write_unlock_bh(&bond->curr_slave_lock); |
| 1209 | read_unlock(&bond->lock); |
| 1210 | |
| 1211 | netdev_bonding_change(bond->dev); |
| 1212 | |
| 1213 | read_lock(&bond->lock); |
| 1214 | write_lock_bh(&bond->curr_slave_lock); |
Moni Shoua | 7893b24 | 2008-05-17 21:10:12 -0700 | [diff] [blame] | 1215 | } |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 1216 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | } |
| 1218 | |
| 1219 | /** |
| 1220 | * bond_select_active_slave - select a new active slave, if needed |
| 1221 | * @bond: our bonding struct |
| 1222 | * |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1223 | * This functions should be called when one of the following occurs: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | * - The old curr_active_slave has been released or lost its link. |
| 1225 | * - The primary_slave has got its link back. |
| 1226 | * - A slave has got its link back and there's no old curr_active_slave. |
| 1227 | * |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1228 | * Caller must hold bond->lock for read and curr_slave_lock for write_bh. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | */ |
Mitch Williams | a77b532 | 2005-11-09 10:35:51 -0800 | [diff] [blame] | 1230 | void bond_select_active_slave(struct bonding *bond) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | { |
| 1232 | struct slave *best_slave; |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 1233 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | |
| 1235 | best_slave = bond_find_best_slave(bond); |
| 1236 | if (best_slave != bond->curr_active_slave) { |
| 1237 | bond_change_active_slave(bond, best_slave); |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 1238 | rv = bond_set_carrier(bond); |
| 1239 | if (!rv) |
| 1240 | return; |
| 1241 | |
| 1242 | if (netif_carrier_ok(bond->dev)) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1243 | pr_info(DRV_NAME |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 1244 | ": %s: first active interface up!\n", |
| 1245 | bond->dev->name); |
| 1246 | } else { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1247 | pr_info(DRV_NAME ": %s: " |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 1248 | "now running without any active interface !\n", |
| 1249 | bond->dev->name); |
| 1250 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | } |
| 1252 | } |
| 1253 | |
| 1254 | /*--------------------------- slave list handling ---------------------------*/ |
| 1255 | |
| 1256 | /* |
| 1257 | * This function attaches the slave to the end of list. |
| 1258 | * |
| 1259 | * bond->lock held for writing by caller. |
| 1260 | */ |
| 1261 | static void bond_attach_slave(struct bonding *bond, struct slave *new_slave) |
| 1262 | { |
| 1263 | if (bond->first_slave == NULL) { /* attaching the first slave */ |
| 1264 | new_slave->next = new_slave; |
| 1265 | new_slave->prev = new_slave; |
| 1266 | bond->first_slave = new_slave; |
| 1267 | } else { |
| 1268 | new_slave->next = bond->first_slave; |
| 1269 | new_slave->prev = bond->first_slave->prev; |
| 1270 | new_slave->next->prev = new_slave; |
| 1271 | new_slave->prev->next = new_slave; |
| 1272 | } |
| 1273 | |
| 1274 | bond->slave_cnt++; |
| 1275 | } |
| 1276 | |
| 1277 | /* |
| 1278 | * This function detaches the slave from the list. |
| 1279 | * WARNING: no check is made to verify if the slave effectively |
| 1280 | * belongs to <bond>. |
| 1281 | * Nothing is freed on return, structures are just unchained. |
| 1282 | * If any slave pointer in bond was pointing to <slave>, |
| 1283 | * it should be changed by the calling function. |
| 1284 | * |
| 1285 | * bond->lock held for writing by caller. |
| 1286 | */ |
| 1287 | static void bond_detach_slave(struct bonding *bond, struct slave *slave) |
| 1288 | { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1289 | if (slave->next) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | slave->next->prev = slave->prev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1292 | if (slave->prev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | slave->prev->next = slave->next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | |
| 1295 | if (bond->first_slave == slave) { /* slave is the first slave */ |
| 1296 | if (bond->slave_cnt > 1) { /* there are more slave */ |
| 1297 | bond->first_slave = slave->next; |
| 1298 | } else { |
| 1299 | bond->first_slave = NULL; /* slave was the last one */ |
| 1300 | } |
| 1301 | } |
| 1302 | |
| 1303 | slave->next = NULL; |
| 1304 | slave->prev = NULL; |
| 1305 | bond->slave_cnt--; |
| 1306 | } |
| 1307 | |
| 1308 | /*---------------------------------- IOCTL ----------------------------------*/ |
| 1309 | |
Adrian Bunk | 4ad072c | 2007-07-09 11:51:12 -0700 | [diff] [blame] | 1310 | static int bond_sethwaddr(struct net_device *bond_dev, |
| 1311 | struct net_device *slave_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 1313 | pr_debug("bond_dev=%p\n", bond_dev); |
| 1314 | pr_debug("slave_dev=%p\n", slave_dev); |
| 1315 | pr_debug("slave_dev->addr_len=%d\n", slave_dev->addr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | memcpy(bond_dev->dev_addr, slave_dev->dev_addr, slave_dev->addr_len); |
| 1317 | return 0; |
| 1318 | } |
| 1319 | |
Herbert Xu | 7f353bf | 2007-08-10 15:47:58 -0700 | [diff] [blame] | 1320 | #define BOND_VLAN_FEATURES \ |
| 1321 | (NETIF_F_VLAN_CHALLENGED | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | \ |
| 1322 | NETIF_F_HW_VLAN_FILTER) |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 1323 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1324 | /* |
Jay Vosburgh | 8e3babc | 2005-11-04 18:45:45 -0800 | [diff] [blame] | 1325 | * Compute the common dev->feature set available to all slaves. Some |
Herbert Xu | 7f353bf | 2007-08-10 15:47:58 -0700 | [diff] [blame] | 1326 | * feature bits are managed elsewhere, so preserve those feature bits |
| 1327 | * on the master device. |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 1328 | */ |
| 1329 | static int bond_compute_features(struct bonding *bond) |
| 1330 | { |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 1331 | struct slave *slave; |
| 1332 | struct net_device *bond_dev = bond->dev; |
Herbert Xu | 7f353bf | 2007-08-10 15:47:58 -0700 | [diff] [blame] | 1333 | unsigned long features = bond_dev->features; |
Moni Shoua | 3158bf7 | 2007-10-09 19:43:41 -0700 | [diff] [blame] | 1334 | unsigned short max_hard_header_len = max((u16)ETH_HLEN, |
| 1335 | bond_dev->hard_header_len); |
Jay Vosburgh | 8e3babc | 2005-11-04 18:45:45 -0800 | [diff] [blame] | 1336 | int i; |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 1337 | |
Herbert Xu | 7f353bf | 2007-08-10 15:47:58 -0700 | [diff] [blame] | 1338 | features &= ~(NETIF_F_ALL_CSUM | BOND_VLAN_FEATURES); |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 1339 | features |= NETIF_F_GSO_MASK | NETIF_F_NO_CSUM; |
| 1340 | |
| 1341 | if (!bond->first_slave) |
| 1342 | goto done; |
| 1343 | |
| 1344 | features &= ~NETIF_F_ONE_FOR_ALL; |
Herbert Xu | 7f353bf | 2007-08-10 15:47:58 -0700 | [diff] [blame] | 1345 | |
Jay Vosburgh | 54ef313 | 2006-09-22 21:53:39 -0700 | [diff] [blame] | 1346 | bond_for_each_slave(bond, slave, i) { |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 1347 | features = netdev_increment_features(features, |
| 1348 | slave->dev->features, |
| 1349 | NETIF_F_ONE_FOR_ALL); |
Jay Vosburgh | 54ef313 | 2006-09-22 21:53:39 -0700 | [diff] [blame] | 1350 | if (slave->dev->hard_header_len > max_hard_header_len) |
| 1351 | max_hard_header_len = slave->dev->hard_header_len; |
| 1352 | } |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 1353 | |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 1354 | done: |
Herbert Xu | 7f353bf | 2007-08-10 15:47:58 -0700 | [diff] [blame] | 1355 | features |= (bond_dev->features & BOND_VLAN_FEATURES); |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 1356 | bond_dev->features = netdev_fix_features(features, NULL); |
Jay Vosburgh | 54ef313 | 2006-09-22 21:53:39 -0700 | [diff] [blame] | 1357 | bond_dev->hard_header_len = max_hard_header_len; |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 1358 | |
| 1359 | return 0; |
| 1360 | } |
| 1361 | |
Moni Shoua | 872254d | 2007-10-09 19:43:38 -0700 | [diff] [blame] | 1362 | static void bond_setup_by_slave(struct net_device *bond_dev, |
| 1363 | struct net_device *slave_dev) |
| 1364 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 1365 | struct bonding *bond = netdev_priv(bond_dev); |
Moni Shoua | d90a162 | 2007-10-09 19:43:43 -0700 | [diff] [blame] | 1366 | |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 1367 | bond_dev->header_ops = slave_dev->header_ops; |
Moni Shoua | 872254d | 2007-10-09 19:43:38 -0700 | [diff] [blame] | 1368 | |
| 1369 | bond_dev->type = slave_dev->type; |
| 1370 | bond_dev->hard_header_len = slave_dev->hard_header_len; |
| 1371 | bond_dev->addr_len = slave_dev->addr_len; |
| 1372 | |
| 1373 | memcpy(bond_dev->broadcast, slave_dev->broadcast, |
| 1374 | slave_dev->addr_len); |
Moni Shoua | d90a162 | 2007-10-09 19:43:43 -0700 | [diff] [blame] | 1375 | bond->setup_by_slave = 1; |
Moni Shoua | 872254d | 2007-10-09 19:43:38 -0700 | [diff] [blame] | 1376 | } |
| 1377 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | /* enslave device <slave> to bond device <master> */ |
Mitch Williams | a77b532 | 2005-11-09 10:35:51 -0800 | [diff] [blame] | 1379 | 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] | 1380 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 1381 | struct bonding *bond = netdev_priv(bond_dev); |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 1382 | const struct net_device_ops *slave_ops = slave_dev->netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | struct slave *new_slave = NULL; |
| 1384 | struct dev_mc_list *dmi; |
| 1385 | struct sockaddr addr; |
| 1386 | int link_reporting; |
| 1387 | int old_features = bond_dev->features; |
| 1388 | int res = 0; |
| 1389 | |
nsxfreddy@gmail.com | 552709d | 2005-09-21 14:18:04 -0500 | [diff] [blame] | 1390 | if (!bond->params.use_carrier && slave_dev->ethtool_ops == NULL && |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 1391 | slave_ops->ndo_do_ioctl == NULL) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1392 | pr_warning(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1393 | ": %s: Warning: no link monitoring support for %s\n", |
| 1394 | bond_dev->name, slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | } |
| 1396 | |
| 1397 | /* bond must be initialized by bond_open() before enslaving */ |
| 1398 | if (!(bond_dev->flags & IFF_UP)) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1399 | pr_warning(DRV_NAME |
Moni Shoua | 6b1bf09 | 2007-10-09 19:43:40 -0700 | [diff] [blame] | 1400 | " %s: master_dev is not up in bond_enslave\n", |
| 1401 | bond_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | } |
| 1403 | |
| 1404 | /* already enslaved */ |
| 1405 | if (slave_dev->flags & IFF_SLAVE) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 1406 | pr_debug("Error, Device was already enslaved\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1407 | return -EBUSY; |
| 1408 | } |
| 1409 | |
| 1410 | /* vlan challenged mutual exclusion */ |
| 1411 | /* no need to lock since we're protected by rtnl_lock */ |
| 1412 | if (slave_dev->features & NETIF_F_VLAN_CHALLENGED) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 1413 | pr_debug("%s: NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | if (!list_empty(&bond->vlan_list)) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1415 | pr_err(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1416 | ": %s: Error: cannot enslave VLAN " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | "challenged slave %s on VLAN enabled " |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1418 | "bond %s\n", bond_dev->name, slave_dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | bond_dev->name); |
| 1420 | return -EPERM; |
| 1421 | } else { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1422 | pr_warning(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1423 | ": %s: Warning: enslaved VLAN challenged " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | "slave %s. Adding VLANs will be blocked as " |
| 1425 | "long as %s is part of bond %s\n", |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1426 | bond_dev->name, slave_dev->name, slave_dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | bond_dev->name); |
| 1428 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
| 1429 | } |
| 1430 | } else { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 1431 | pr_debug("%s: ! NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | if (bond->slave_cnt == 0) { |
| 1433 | /* First slave, and it is not VLAN challenged, |
| 1434 | * so remove the block of adding VLANs over the bond. |
| 1435 | */ |
| 1436 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; |
| 1437 | } |
| 1438 | } |
| 1439 | |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 1440 | /* |
| 1441 | * Old ifenslave binaries are no longer supported. These can |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1442 | * be identified with moderate accuracy by the state of the slave: |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 1443 | * the current ifenslave will set the interface down prior to |
| 1444 | * enslaving it; the old ifenslave will not. |
| 1445 | */ |
| 1446 | if ((slave_dev->flags & IFF_UP)) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1447 | pr_err(DRV_NAME ": %s is up. " |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 1448 | "This may be due to an out of date ifenslave.\n", |
| 1449 | slave_dev->name); |
| 1450 | res = -EPERM; |
| 1451 | goto err_undo_flags; |
| 1452 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | |
Moni Shoua | 872254d | 2007-10-09 19:43:38 -0700 | [diff] [blame] | 1454 | /* set bonding device ether type by slave - bonding netdevices are |
| 1455 | * created with ether_setup, so when the slave type is not ARPHRD_ETHER |
| 1456 | * there is a need to override some of the type dependent attribs/funcs. |
| 1457 | * |
| 1458 | * bond ether type mutual exclusion - don't allow slaves of dissimilar |
| 1459 | * ether type (eg ARPHRD_ETHER and ARPHRD_INFINIBAND) share the same bond |
| 1460 | */ |
| 1461 | if (bond->slave_cnt == 0) { |
Moni Shoua | e36b9d1 | 2009-07-15 04:56:31 +0000 | [diff] [blame] | 1462 | if (bond_dev->type != slave_dev->type) { |
| 1463 | dev_close(bond_dev); |
| 1464 | pr_debug("%s: change device type from %d to %d\n", |
| 1465 | bond_dev->name, bond_dev->type, slave_dev->type); |
| 1466 | if (slave_dev->type != ARPHRD_ETHER) |
| 1467 | bond_setup_by_slave(bond_dev, slave_dev); |
| 1468 | else |
| 1469 | ether_setup(bond_dev); |
| 1470 | dev_open(bond_dev); |
| 1471 | } |
Moni Shoua | 872254d | 2007-10-09 19:43:38 -0700 | [diff] [blame] | 1472 | } else if (bond_dev->type != slave_dev->type) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1473 | pr_err(DRV_NAME ": %s ether type (%d) is different " |
Moni Shoua | 872254d | 2007-10-09 19:43:38 -0700 | [diff] [blame] | 1474 | "from other slaves (%d), can not enslave it.\n", |
| 1475 | slave_dev->name, |
| 1476 | slave_dev->type, bond_dev->type); |
| 1477 | res = -EINVAL; |
| 1478 | goto err_undo_flags; |
| 1479 | } |
| 1480 | |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 1481 | if (slave_ops->ndo_set_mac_address == NULL) { |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1482 | if (bond->slave_cnt == 0) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1483 | pr_warning(DRV_NAME |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 1484 | ": %s: Warning: The first slave device " |
| 1485 | "specified does not support setting the MAC " |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1486 | "address. Setting fail_over_mac to active.", |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 1487 | bond_dev->name); |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1488 | bond->params.fail_over_mac = BOND_FOM_ACTIVE; |
| 1489 | } else if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1490 | pr_err(DRV_NAME |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 1491 | ": %s: Error: The slave device specified " |
| 1492 | "does not support setting the MAC address, " |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1493 | "but fail_over_mac is not set to active.\n" |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1494 | , bond_dev->name); |
| 1495 | res = -EOPNOTSUPP; |
| 1496 | goto err_undo_flags; |
| 1497 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | } |
| 1499 | |
Joe Jin | 243cb4e | 2007-02-06 14:16:40 -0800 | [diff] [blame] | 1500 | new_slave = kzalloc(sizeof(struct slave), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | if (!new_slave) { |
| 1502 | res = -ENOMEM; |
| 1503 | goto err_undo_flags; |
| 1504 | } |
| 1505 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1506 | /* save slave's original flags before calling |
| 1507 | * netdev_set_master and dev_open |
| 1508 | */ |
| 1509 | new_slave->original_flags = slave_dev->flags; |
| 1510 | |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 1511 | /* |
| 1512 | * Save slave's original ("permanent") mac address for modes |
| 1513 | * that need it, and for restoring it upon release, and then |
| 1514 | * set it to the master's address |
| 1515 | */ |
| 1516 | memcpy(new_slave->perm_hwaddr, slave_dev->dev_addr, ETH_ALEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 1518 | if (!bond->params.fail_over_mac) { |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1519 | /* |
| 1520 | * Set slave to master's mac address. The application already |
| 1521 | * set the master's mac address to that of the first slave |
| 1522 | */ |
| 1523 | memcpy(addr.sa_data, bond_dev->dev_addr, bond_dev->addr_len); |
| 1524 | addr.sa_family = slave_dev->type; |
| 1525 | res = dev_set_mac_address(slave_dev, &addr); |
| 1526 | if (res) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 1527 | pr_debug("Error %d calling set_mac_address\n", res); |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1528 | goto err_free; |
| 1529 | } |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 1530 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1531 | |
Jay Vosburgh | c2edacf | 2007-07-09 10:42:47 -0700 | [diff] [blame] | 1532 | res = netdev_set_master(slave_dev, bond_dev); |
| 1533 | if (res) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 1534 | pr_debug("Error %d calling netdev_set_master\n", res); |
Jay Vosburgh | 569f0c4 | 2008-05-02 18:06:02 -0700 | [diff] [blame] | 1535 | goto err_restore_mac; |
Jay Vosburgh | c2edacf | 2007-07-09 10:42:47 -0700 | [diff] [blame] | 1536 | } |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 1537 | /* open the slave since the application closed it */ |
| 1538 | res = dev_open(slave_dev); |
| 1539 | if (res) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1540 | pr_debug("Opening slave %s failed\n", slave_dev->name); |
Jay Vosburgh | 569f0c4 | 2008-05-02 18:06:02 -0700 | [diff] [blame] | 1541 | goto err_unset_master; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | } |
| 1543 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | new_slave->dev = slave_dev; |
Jay Vosburgh | 0b680e7 | 2006-09-22 21:54:10 -0700 | [diff] [blame] | 1545 | slave_dev->priv_flags |= IFF_BONDING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 1547 | if (bond_is_lb(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | /* bond_alb_init_slave() must be called before all other stages since |
| 1549 | * it might fail and we do not want to have to undo everything |
| 1550 | */ |
| 1551 | res = bond_alb_init_slave(bond, new_slave); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1552 | if (res) |
Jay Vosburgh | 569f0c4 | 2008-05-02 18:06:02 -0700 | [diff] [blame] | 1553 | goto err_close; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1554 | } |
| 1555 | |
| 1556 | /* If the mode USES_PRIMARY, then the new slave gets the |
| 1557 | * master's promisc (and mc) settings only if it becomes the |
| 1558 | * curr_active_slave, and that is taken care of later when calling |
| 1559 | * bond_change_active() |
| 1560 | */ |
| 1561 | if (!USES_PRIMARY(bond->params.mode)) { |
| 1562 | /* set promiscuity level to new slave */ |
| 1563 | if (bond_dev->flags & IFF_PROMISC) { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 1564 | res = dev_set_promiscuity(slave_dev, 1); |
| 1565 | if (res) |
| 1566 | goto err_close; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | } |
| 1568 | |
| 1569 | /* set allmulti level to new slave */ |
| 1570 | if (bond_dev->flags & IFF_ALLMULTI) { |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 1571 | res = dev_set_allmulti(slave_dev, 1); |
| 1572 | if (res) |
| 1573 | goto err_close; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1574 | } |
| 1575 | |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 1576 | netif_addr_lock_bh(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | /* upload master's mc_list to new slave */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1578 | for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) |
| 1579 | dev_mc_add(slave_dev, dmi->dmi_addr, |
| 1580 | dmi->dmi_addrlen, 0); |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 1581 | netif_addr_unlock_bh(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1582 | } |
| 1583 | |
| 1584 | if (bond->params.mode == BOND_MODE_8023AD) { |
| 1585 | /* add lacpdu mc addr to mc list */ |
| 1586 | u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR; |
| 1587 | |
| 1588 | dev_mc_add(slave_dev, lacpdu_multicast, ETH_ALEN, 0); |
| 1589 | } |
| 1590 | |
| 1591 | bond_add_vlans_on_slave(bond, slave_dev); |
| 1592 | |
| 1593 | write_lock_bh(&bond->lock); |
| 1594 | |
| 1595 | bond_attach_slave(bond, new_slave); |
| 1596 | |
| 1597 | new_slave->delay = 0; |
| 1598 | new_slave->link_failure_count = 0; |
| 1599 | |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 1600 | bond_compute_features(bond); |
| 1601 | |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1602 | write_unlock_bh(&bond->lock); |
| 1603 | |
| 1604 | read_lock(&bond->lock); |
| 1605 | |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 1606 | new_slave->last_arp_rx = jiffies; |
| 1607 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | if (bond->params.miimon && !bond->params.use_carrier) { |
| 1609 | link_reporting = bond_check_dev_link(bond, slave_dev, 1); |
| 1610 | |
| 1611 | if ((link_reporting == -1) && !bond->params.arp_interval) { |
| 1612 | /* |
| 1613 | * miimon is set but a bonded network driver |
| 1614 | * does not support ETHTOOL/MII and |
| 1615 | * arp_interval is not set. Note: if |
| 1616 | * use_carrier is enabled, we will never go |
| 1617 | * here (because netif_carrier is always |
| 1618 | * supported); thus, we don't need to change |
| 1619 | * the messages for netif_carrier. |
| 1620 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1621 | pr_warning(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1622 | ": %s: Warning: MII and ETHTOOL support not " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | "available for interface %s, and " |
| 1624 | "arp_interval/arp_ip_target module parameters " |
| 1625 | "not specified, thus bonding will not detect " |
| 1626 | "link failures! see bonding.txt for details.\n", |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1627 | bond_dev->name, slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | } else if (link_reporting == -1) { |
| 1629 | /* unable get link status using mii/ethtool */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1630 | pr_warning(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1631 | ": %s: Warning: can't get link status from " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1632 | "interface %s; the network driver associated " |
| 1633 | "with this interface does not support MII or " |
| 1634 | "ETHTOOL link status reporting, thus miimon " |
| 1635 | "has no effect on this interface.\n", |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1636 | bond_dev->name, slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | } |
| 1638 | } |
| 1639 | |
| 1640 | /* check for initial state */ |
| 1641 | if (!bond->params.miimon || |
| 1642 | (bond_check_dev_link(bond, slave_dev, 0) == BMSR_LSTATUS)) { |
| 1643 | if (bond->params.updelay) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 1644 | pr_debug("Initial state of slave_dev is " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | "BOND_LINK_BACK\n"); |
| 1646 | new_slave->link = BOND_LINK_BACK; |
| 1647 | new_slave->delay = bond->params.updelay; |
| 1648 | } else { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 1649 | pr_debug("Initial state of slave_dev is " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1650 | "BOND_LINK_UP\n"); |
| 1651 | new_slave->link = BOND_LINK_UP; |
| 1652 | } |
| 1653 | new_slave->jiffies = jiffies; |
| 1654 | } else { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 1655 | pr_debug("Initial state of slave_dev is " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1656 | "BOND_LINK_DOWN\n"); |
| 1657 | new_slave->link = BOND_LINK_DOWN; |
| 1658 | } |
| 1659 | |
| 1660 | if (bond_update_speed_duplex(new_slave) && |
| 1661 | (new_slave->link != BOND_LINK_DOWN)) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1662 | pr_warning(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1663 | ": %s: Warning: failed to get speed and duplex from %s, " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | "assumed to be 100Mb/sec and Full.\n", |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1665 | bond_dev->name, new_slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1666 | |
| 1667 | if (bond->params.mode == BOND_MODE_8023AD) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1668 | pr_warning(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1669 | ": %s: Warning: Operation of 802.3ad mode requires ETHTOOL " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1670 | "support in base driver for proper aggregator " |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1671 | "selection.\n", bond_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | } |
| 1673 | } |
| 1674 | |
| 1675 | if (USES_PRIMARY(bond->params.mode) && bond->params.primary[0]) { |
| 1676 | /* if there is a primary slave, remember it */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1677 | if (strcmp(bond->params.primary, new_slave->dev->name) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1678 | bond->primary_slave = new_slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1679 | } |
| 1680 | |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1681 | write_lock_bh(&bond->curr_slave_lock); |
| 1682 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1683 | switch (bond->params.mode) { |
| 1684 | case BOND_MODE_ACTIVEBACKUP: |
Jay Vosburgh | 8a8e447 | 2006-09-22 21:56:15 -0700 | [diff] [blame] | 1685 | bond_set_slave_inactive_flags(new_slave); |
| 1686 | bond_select_active_slave(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | break; |
| 1688 | case BOND_MODE_8023AD: |
| 1689 | /* in 802.3ad mode, the internal mechanism |
| 1690 | * will activate the slaves in the selected |
| 1691 | * aggregator |
| 1692 | */ |
| 1693 | bond_set_slave_inactive_flags(new_slave); |
| 1694 | /* if this is the first slave */ |
| 1695 | if (bond->slave_cnt == 1) { |
| 1696 | SLAVE_AD_INFO(new_slave).id = 1; |
| 1697 | /* Initialize AD with the number of times that the AD timer is called in 1 second |
| 1698 | * can be called only after the mac address of the bond is set |
| 1699 | */ |
| 1700 | bond_3ad_initialize(bond, 1000/AD_TIMER_INTERVAL, |
| 1701 | bond->params.lacp_fast); |
| 1702 | } else { |
| 1703 | SLAVE_AD_INFO(new_slave).id = |
| 1704 | SLAVE_AD_INFO(new_slave->prev).id + 1; |
| 1705 | } |
| 1706 | |
| 1707 | bond_3ad_bind_slave(new_slave); |
| 1708 | break; |
| 1709 | case BOND_MODE_TLB: |
| 1710 | case BOND_MODE_ALB: |
| 1711 | new_slave->state = BOND_STATE_ACTIVE; |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1712 | bond_set_slave_inactive_flags(new_slave); |
Jiri Pirko | 5a29f78 | 2009-03-25 17:23:38 -0700 | [diff] [blame] | 1713 | bond_select_active_slave(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | break; |
| 1715 | default: |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 1716 | pr_debug("This slave is always active in trunk mode\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1717 | |
| 1718 | /* always active in trunk mode */ |
| 1719 | new_slave->state = BOND_STATE_ACTIVE; |
| 1720 | |
| 1721 | /* In trunking mode there is little meaning to curr_active_slave |
| 1722 | * anyway (it holds no special properties of the bond device), |
| 1723 | * so we can change it without calling change_active_interface() |
| 1724 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1725 | if (!bond->curr_active_slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | bond->curr_active_slave = new_slave; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1727 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | break; |
| 1729 | } /* switch(bond_mode) */ |
| 1730 | |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1731 | write_unlock_bh(&bond->curr_slave_lock); |
| 1732 | |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 1733 | bond_set_carrier(bond); |
| 1734 | |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1735 | read_unlock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1736 | |
Mitch Williams | b76cdba | 2005-11-09 10:36:41 -0800 | [diff] [blame] | 1737 | res = bond_create_slave_symlinks(bond_dev, slave_dev); |
| 1738 | if (res) |
Jay Vosburgh | 569f0c4 | 2008-05-02 18:06:02 -0700 | [diff] [blame] | 1739 | goto err_close; |
Mitch Williams | b76cdba | 2005-11-09 10:36:41 -0800 | [diff] [blame] | 1740 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1741 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1742 | ": %s: enslaving %s as a%s interface with a%s link.\n", |
| 1743 | bond_dev->name, slave_dev->name, |
| 1744 | new_slave->state == BOND_STATE_ACTIVE ? "n active" : " backup", |
| 1745 | new_slave->link != BOND_LINK_DOWN ? "n up" : " down"); |
| 1746 | |
| 1747 | /* enslave is successful */ |
| 1748 | return 0; |
| 1749 | |
| 1750 | /* Undo stages on error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | err_close: |
| 1752 | dev_close(slave_dev); |
| 1753 | |
Jay Vosburgh | 569f0c4 | 2008-05-02 18:06:02 -0700 | [diff] [blame] | 1754 | err_unset_master: |
| 1755 | netdev_set_master(slave_dev, NULL); |
| 1756 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | err_restore_mac: |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 1758 | if (!bond->params.fail_over_mac) { |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1759 | /* XXX TODO - fom follow mode needs to change master's |
| 1760 | * MAC if this slave's MAC is in use by the bond, or at |
| 1761 | * least print a warning. |
| 1762 | */ |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1763 | memcpy(addr.sa_data, new_slave->perm_hwaddr, ETH_ALEN); |
| 1764 | addr.sa_family = slave_dev->type; |
| 1765 | dev_set_mac_address(slave_dev, &addr); |
| 1766 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | |
| 1768 | err_free: |
| 1769 | kfree(new_slave); |
| 1770 | |
| 1771 | err_undo_flags: |
| 1772 | bond_dev->features = old_features; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1773 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | return res; |
| 1775 | } |
| 1776 | |
| 1777 | /* |
| 1778 | * Try to release the slave device <slave> from the bond device <master> |
| 1779 | * It is legal to access curr_active_slave without a lock because all the function |
| 1780 | * is write-locked. |
| 1781 | * |
| 1782 | * The rules for slave state should be: |
| 1783 | * for Active/Backup: |
| 1784 | * Active stays on all backups go down |
| 1785 | * for Bonded connections: |
| 1786 | * The first up interface should be left on and all others downed. |
| 1787 | */ |
Mitch Williams | a77b532 | 2005-11-09 10:35:51 -0800 | [diff] [blame] | 1788 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1789 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 1790 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1791 | struct slave *slave, *oldcurrent; |
| 1792 | struct sockaddr addr; |
| 1793 | int mac_addr_differ; |
| 1794 | |
| 1795 | /* slave is not a slave or master is not master of this slave */ |
| 1796 | if (!(slave_dev->flags & IFF_SLAVE) || |
| 1797 | (slave_dev->master != bond_dev)) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1798 | pr_err(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1799 | ": %s: Error: cannot release %s.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | bond_dev->name, slave_dev->name); |
| 1801 | return -EINVAL; |
| 1802 | } |
| 1803 | |
| 1804 | write_lock_bh(&bond->lock); |
| 1805 | |
| 1806 | slave = bond_get_slave_by_dev(bond, slave_dev); |
| 1807 | if (!slave) { |
| 1808 | /* not a slave of this bond */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1809 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1810 | ": %s: %s not enslaved\n", |
| 1811 | bond_dev->name, slave_dev->name); |
Jay Vosburgh | f5e2a7b | 2006-02-07 21:17:22 -0800 | [diff] [blame] | 1812 | write_unlock_bh(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | return -EINVAL; |
| 1814 | } |
| 1815 | |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1816 | if (!bond->params.fail_over_mac) { |
| 1817 | mac_addr_differ = memcmp(bond_dev->dev_addr, slave->perm_hwaddr, |
| 1818 | ETH_ALEN); |
| 1819 | if (!mac_addr_differ && (bond->slave_cnt > 1)) |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1820 | pr_warning(DRV_NAME |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1821 | ": %s: Warning: the permanent HWaddr of %s - " |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1822 | "%pM - is still in use by %s. " |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1823 | "Set the HWaddr of %s to a different address " |
| 1824 | "to avoid conflicts.\n", |
| 1825 | bond_dev->name, slave_dev->name, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1826 | slave->perm_hwaddr, |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1827 | bond_dev->name, slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | } |
| 1829 | |
| 1830 | /* Inform AD package of unbinding of slave. */ |
| 1831 | if (bond->params.mode == BOND_MODE_8023AD) { |
| 1832 | /* must be called before the slave is |
| 1833 | * detached from the list |
| 1834 | */ |
| 1835 | bond_3ad_unbind_slave(slave); |
| 1836 | } |
| 1837 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1838 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1839 | ": %s: releasing %s interface %s\n", |
| 1840 | bond_dev->name, |
| 1841 | (slave->state == BOND_STATE_ACTIVE) |
| 1842 | ? "active" : "backup", |
| 1843 | slave_dev->name); |
| 1844 | |
| 1845 | oldcurrent = bond->curr_active_slave; |
| 1846 | |
| 1847 | bond->current_arp_slave = NULL; |
| 1848 | |
| 1849 | /* release the slave from its bond */ |
| 1850 | bond_detach_slave(bond, slave); |
| 1851 | |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 1852 | bond_compute_features(bond); |
| 1853 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1854 | if (bond->primary_slave == slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | bond->primary_slave = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1857 | if (oldcurrent == slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | bond_change_active_slave(bond, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1859 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 1860 | if (bond_is_lb(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1861 | /* Must be called only after the slave has been |
| 1862 | * detached from the list and the curr_active_slave |
| 1863 | * has been cleared (if our_slave == old_current), |
| 1864 | * but before a new active slave is selected. |
| 1865 | */ |
Jay Vosburgh | 2543331 | 2008-01-17 16:24:59 -0800 | [diff] [blame] | 1866 | write_unlock_bh(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | bond_alb_deinit_slave(bond, slave); |
Jay Vosburgh | 2543331 | 2008-01-17 16:24:59 -0800 | [diff] [blame] | 1868 | write_lock_bh(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | } |
| 1870 | |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1871 | if (oldcurrent == slave) { |
| 1872 | /* |
| 1873 | * Note that we hold RTNL over this sequence, so there |
| 1874 | * is no concern that another slave add/remove event |
| 1875 | * will interfere. |
| 1876 | */ |
| 1877 | write_unlock_bh(&bond->lock); |
| 1878 | read_lock(&bond->lock); |
| 1879 | write_lock_bh(&bond->curr_slave_lock); |
| 1880 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | bond_select_active_slave(bond); |
| 1882 | |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 1883 | write_unlock_bh(&bond->curr_slave_lock); |
| 1884 | read_unlock(&bond->lock); |
| 1885 | write_lock_bh(&bond->lock); |
| 1886 | } |
| 1887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | if (bond->slave_cnt == 0) { |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 1889 | bond_set_carrier(bond); |
| 1890 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1891 | /* if the last slave was removed, zero the mac address |
| 1892 | * of the master so it will be set by the application |
| 1893 | * to the mac address of the first slave |
| 1894 | */ |
| 1895 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); |
| 1896 | |
| 1897 | if (list_empty(&bond->vlan_list)) { |
| 1898 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
| 1899 | } else { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1900 | pr_warning(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1901 | ": %s: Warning: clearing HW address of %s while it " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1902 | "still has VLANs.\n", |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1903 | bond_dev->name, bond_dev->name); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1904 | pr_warning(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1905 | ": %s: When re-adding slaves, make sure the bond's " |
| 1906 | "HW address matches its VLANs'.\n", |
| 1907 | bond_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1908 | } |
| 1909 | } else if ((bond_dev->features & NETIF_F_VLAN_CHALLENGED) && |
| 1910 | !bond_has_challenged_slaves(bond)) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1911 | pr_info(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1912 | ": %s: last VLAN challenged slave %s " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1913 | "left bond %s. VLAN blocking is removed\n", |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 1914 | bond_dev->name, slave_dev->name, bond_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED; |
| 1916 | } |
| 1917 | |
| 1918 | write_unlock_bh(&bond->lock); |
| 1919 | |
Mitch Williams | b76cdba | 2005-11-09 10:36:41 -0800 | [diff] [blame] | 1920 | /* must do this from outside any spinlocks */ |
| 1921 | bond_destroy_slave_symlinks(bond_dev, slave_dev); |
| 1922 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | bond_del_vlans_from_slave(bond, slave_dev); |
| 1924 | |
| 1925 | /* If the mode USES_PRIMARY, then we should only remove its |
| 1926 | * promisc and mc settings if it was the curr_active_slave, but that was |
| 1927 | * already taken care of above when we detached the slave |
| 1928 | */ |
| 1929 | if (!USES_PRIMARY(bond->params.mode)) { |
| 1930 | /* unset promiscuity level from slave */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1931 | if (bond_dev->flags & IFF_PROMISC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1932 | dev_set_promiscuity(slave_dev, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | |
| 1934 | /* unset allmulti level from slave */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1935 | if (bond_dev->flags & IFF_ALLMULTI) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1936 | dev_set_allmulti(slave_dev, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1937 | |
| 1938 | /* flush master's mc_list from slave */ |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 1939 | netif_addr_lock_bh(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1940 | bond_mc_list_flush(bond_dev, slave_dev); |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 1941 | netif_addr_unlock_bh(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | } |
| 1943 | |
| 1944 | netdev_set_master(slave_dev, NULL); |
| 1945 | |
| 1946 | /* close slave before restoring its mac address */ |
| 1947 | dev_close(slave_dev); |
| 1948 | |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 1949 | if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) { |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 1950 | /* restore original ("permanent") mac address */ |
| 1951 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); |
| 1952 | addr.sa_family = slave_dev->type; |
| 1953 | dev_set_mac_address(slave_dev, &addr); |
| 1954 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1955 | |
Jay Vosburgh | 8f903c7 | 2006-02-21 16:36:44 -0800 | [diff] [blame] | 1956 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 1957 | IFF_SLAVE_INACTIVE | IFF_BONDING | |
| 1958 | IFF_SLAVE_NEEDARP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1959 | |
| 1960 | kfree(slave); |
| 1961 | |
| 1962 | return 0; /* deletion OK */ |
| 1963 | } |
| 1964 | |
| 1965 | /* |
Moni Shoua | d90a162 | 2007-10-09 19:43:43 -0700 | [diff] [blame] | 1966 | * Destroy a bonding device. |
| 1967 | * Must be under rtnl_lock when this function is called. |
| 1968 | */ |
Stephen Hemminger | 9e71626 | 2009-06-12 19:02:47 +0000 | [diff] [blame] | 1969 | static void bond_uninit(struct net_device *bond_dev) |
Jay Vosburgh | a434e43 | 2008-10-30 17:41:15 -0700 | [diff] [blame] | 1970 | { |
Wang Chen | 244ef9b | 2008-12-03 21:14:04 -0800 | [diff] [blame] | 1971 | struct bonding *bond = netdev_priv(bond_dev); |
Jay Vosburgh | a434e43 | 2008-10-30 17:41:15 -0700 | [diff] [blame] | 1972 | |
Stephen Hemminger | 9e71626 | 2009-06-12 19:02:47 +0000 | [diff] [blame] | 1973 | bond_deinit(bond_dev); |
| 1974 | bond_destroy_sysfs_entry(bond); |
| 1975 | |
Jay Vosburgh | a434e43 | 2008-10-30 17:41:15 -0700 | [diff] [blame] | 1976 | if (bond->wq) |
| 1977 | destroy_workqueue(bond->wq); |
| 1978 | |
| 1979 | netif_addr_lock_bh(bond_dev); |
| 1980 | bond_mc_list_destroy(bond); |
| 1981 | netif_addr_unlock_bh(bond_dev); |
Jay Vosburgh | a434e43 | 2008-10-30 17:41:15 -0700 | [diff] [blame] | 1982 | } |
| 1983 | |
Moni Shoua | d90a162 | 2007-10-09 19:43:43 -0700 | [diff] [blame] | 1984 | /* |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1985 | * First release a slave and than destroy the bond if no more slaves are left. |
Moni Shoua | d90a162 | 2007-10-09 19:43:43 -0700 | [diff] [blame] | 1986 | * Must be under rtnl_lock when this function is called. |
| 1987 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1988 | int bond_release_and_destroy(struct net_device *bond_dev, |
| 1989 | struct net_device *slave_dev) |
Moni Shoua | d90a162 | 2007-10-09 19:43:43 -0700 | [diff] [blame] | 1990 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 1991 | struct bonding *bond = netdev_priv(bond_dev); |
Moni Shoua | d90a162 | 2007-10-09 19:43:43 -0700 | [diff] [blame] | 1992 | int ret; |
| 1993 | |
| 1994 | ret = bond_release(bond_dev, slave_dev); |
| 1995 | if ((ret == 0) && (bond->slave_cnt == 0)) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 1996 | pr_info(DRV_NAME ": %s: destroying bond %s.\n", |
Moni Shoua | d90a162 | 2007-10-09 19:43:43 -0700 | [diff] [blame] | 1997 | bond_dev->name, bond_dev->name); |
Stephen Hemminger | 9e71626 | 2009-06-12 19:02:47 +0000 | [diff] [blame] | 1998 | unregister_netdevice(bond_dev); |
Moni Shoua | d90a162 | 2007-10-09 19:43:43 -0700 | [diff] [blame] | 1999 | } |
| 2000 | return ret; |
| 2001 | } |
| 2002 | |
| 2003 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2004 | * This function releases all slaves. |
| 2005 | */ |
| 2006 | static int bond_release_all(struct net_device *bond_dev) |
| 2007 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 2008 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2009 | struct slave *slave; |
| 2010 | struct net_device *slave_dev; |
| 2011 | struct sockaddr addr; |
| 2012 | |
| 2013 | write_lock_bh(&bond->lock); |
| 2014 | |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 2015 | netif_carrier_off(bond_dev); |
| 2016 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2017 | if (bond->slave_cnt == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2018 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2019 | |
| 2020 | bond->current_arp_slave = NULL; |
| 2021 | bond->primary_slave = NULL; |
| 2022 | bond_change_active_slave(bond, NULL); |
| 2023 | |
| 2024 | while ((slave = bond->first_slave) != NULL) { |
| 2025 | /* Inform AD package of unbinding of slave |
| 2026 | * before slave is detached from the list. |
| 2027 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2028 | if (bond->params.mode == BOND_MODE_8023AD) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2029 | bond_3ad_unbind_slave(slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | |
| 2031 | slave_dev = slave->dev; |
| 2032 | bond_detach_slave(bond, slave); |
| 2033 | |
Jay Vosburgh | 2543331 | 2008-01-17 16:24:59 -0800 | [diff] [blame] | 2034 | /* now that the slave is detached, unlock and perform |
| 2035 | * all the undo steps that should not be called from |
| 2036 | * within a lock. |
| 2037 | */ |
| 2038 | write_unlock_bh(&bond->lock); |
| 2039 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 2040 | if (bond_is_lb(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | /* must be called only after the slave |
| 2042 | * has been detached from the list |
| 2043 | */ |
| 2044 | bond_alb_deinit_slave(bond, slave); |
| 2045 | } |
| 2046 | |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 2047 | bond_compute_features(bond); |
| 2048 | |
Mitch Williams | b76cdba | 2005-11-09 10:36:41 -0800 | [diff] [blame] | 2049 | bond_destroy_slave_symlinks(bond_dev, slave_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2050 | bond_del_vlans_from_slave(bond, slave_dev); |
| 2051 | |
| 2052 | /* If the mode USES_PRIMARY, then we should only remove its |
| 2053 | * promisc and mc settings if it was the curr_active_slave, but that was |
| 2054 | * already taken care of above when we detached the slave |
| 2055 | */ |
| 2056 | if (!USES_PRIMARY(bond->params.mode)) { |
| 2057 | /* unset promiscuity level from slave */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2058 | if (bond_dev->flags & IFF_PROMISC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2059 | dev_set_promiscuity(slave_dev, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | |
| 2061 | /* unset allmulti level from slave */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2062 | if (bond_dev->flags & IFF_ALLMULTI) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2063 | dev_set_allmulti(slave_dev, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2064 | |
| 2065 | /* flush master's mc_list from slave */ |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 2066 | netif_addr_lock_bh(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | bond_mc_list_flush(bond_dev, slave_dev); |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 2068 | netif_addr_unlock_bh(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | } |
| 2070 | |
| 2071 | netdev_set_master(slave_dev, NULL); |
| 2072 | |
| 2073 | /* close slave before restoring its mac address */ |
| 2074 | dev_close(slave_dev); |
| 2075 | |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 2076 | if (!bond->params.fail_over_mac) { |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 2077 | /* restore original ("permanent") mac address*/ |
| 2078 | memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN); |
| 2079 | addr.sa_family = slave_dev->type; |
| 2080 | dev_set_mac_address(slave_dev, &addr); |
| 2081 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2082 | |
Jay Vosburgh | 8f903c7 | 2006-02-21 16:36:44 -0800 | [diff] [blame] | 2083 | slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB | |
| 2084 | IFF_SLAVE_INACTIVE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2085 | |
| 2086 | kfree(slave); |
| 2087 | |
| 2088 | /* re-acquire the lock before getting the next slave */ |
| 2089 | write_lock_bh(&bond->lock); |
| 2090 | } |
| 2091 | |
| 2092 | /* zero the mac address of the master so it will be |
| 2093 | * set by the application to the mac address of the |
| 2094 | * first slave |
| 2095 | */ |
| 2096 | memset(bond_dev->dev_addr, 0, bond_dev->addr_len); |
| 2097 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2098 | if (list_empty(&bond->vlan_list)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2099 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2100 | else { |
| 2101 | pr_warning(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 2102 | ": %s: Warning: clearing HW address of %s while it " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | "still has VLANs.\n", |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 2104 | bond_dev->name, bond_dev->name); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2105 | pr_warning(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 2106 | ": %s: When re-adding slaves, make sure the bond's " |
| 2107 | "HW address matches its VLANs'.\n", |
| 2108 | bond_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2109 | } |
| 2110 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2111 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2112 | ": %s: released all slaves\n", |
| 2113 | bond_dev->name); |
| 2114 | |
| 2115 | out: |
| 2116 | write_unlock_bh(&bond->lock); |
| 2117 | |
| 2118 | return 0; |
| 2119 | } |
| 2120 | |
| 2121 | /* |
| 2122 | * This function changes the active slave to slave <slave_dev>. |
| 2123 | * It returns -EINVAL in the following cases. |
| 2124 | * - <slave_dev> is not found in the list. |
| 2125 | * - There is not active slave now. |
| 2126 | * - <slave_dev> is already active. |
| 2127 | * - The link state of <slave_dev> is not BOND_LINK_UP. |
| 2128 | * - <slave_dev> is not running. |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2129 | * In these cases, this function does nothing. |
| 2130 | * In the other cases, current_slave pointer is changed and 0 is returned. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | */ |
| 2132 | static int bond_ioctl_change_active(struct net_device *bond_dev, struct net_device *slave_dev) |
| 2133 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 2134 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2135 | struct slave *old_active = NULL; |
| 2136 | struct slave *new_active = NULL; |
| 2137 | int res = 0; |
| 2138 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2139 | if (!USES_PRIMARY(bond->params.mode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2140 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2141 | |
| 2142 | /* Verify that master_dev is indeed the master of slave_dev */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2143 | if (!(slave_dev->flags & IFF_SLAVE) || (slave_dev->master != bond_dev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2144 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2145 | |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2146 | read_lock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2147 | |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2148 | read_lock(&bond->curr_slave_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2149 | old_active = bond->curr_active_slave; |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2150 | read_unlock(&bond->curr_slave_lock); |
| 2151 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2152 | new_active = bond_get_slave_by_dev(bond, slave_dev); |
| 2153 | |
| 2154 | /* |
| 2155 | * Changing to the current active: do nothing; return success. |
| 2156 | */ |
| 2157 | if (new_active && (new_active == old_active)) { |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2158 | read_unlock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2159 | return 0; |
| 2160 | } |
| 2161 | |
| 2162 | if ((new_active) && |
| 2163 | (old_active) && |
| 2164 | (new_active->link == BOND_LINK_UP) && |
| 2165 | IS_UP(new_active->dev)) { |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2166 | write_lock_bh(&bond->curr_slave_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2167 | bond_change_active_slave(bond, new_active); |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2168 | write_unlock_bh(&bond->curr_slave_lock); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2169 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2170 | res = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2171 | |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2172 | read_unlock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2173 | |
| 2174 | return res; |
| 2175 | } |
| 2176 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2177 | static int bond_info_query(struct net_device *bond_dev, struct ifbond *info) |
| 2178 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 2179 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2180 | |
| 2181 | info->bond_mode = bond->params.mode; |
| 2182 | info->miimon = bond->params.miimon; |
| 2183 | |
Jay Vosburgh | 6603a6f | 2007-10-17 17:37:50 -0700 | [diff] [blame] | 2184 | read_lock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2185 | info->num_slaves = bond->slave_cnt; |
Jay Vosburgh | 6603a6f | 2007-10-17 17:37:50 -0700 | [diff] [blame] | 2186 | read_unlock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2187 | |
| 2188 | return 0; |
| 2189 | } |
| 2190 | |
| 2191 | static int bond_slave_info_query(struct net_device *bond_dev, struct ifslave *info) |
| 2192 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 2193 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2194 | struct slave *slave; |
Eric Dumazet | 689c96c | 2009-04-23 03:39:04 +0000 | [diff] [blame] | 2195 | int i, res = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2196 | |
Jay Vosburgh | 6603a6f | 2007-10-17 17:37:50 -0700 | [diff] [blame] | 2197 | read_lock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2198 | |
| 2199 | bond_for_each_slave(bond, slave, i) { |
| 2200 | if (i == (int)info->slave_id) { |
Eric Dumazet | 689c96c | 2009-04-23 03:39:04 +0000 | [diff] [blame] | 2201 | res = 0; |
| 2202 | strcpy(info->slave_name, slave->dev->name); |
| 2203 | info->link = slave->link; |
| 2204 | info->state = slave->state; |
| 2205 | info->link_failure_count = slave->link_failure_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2206 | break; |
| 2207 | } |
| 2208 | } |
| 2209 | |
Jay Vosburgh | 6603a6f | 2007-10-17 17:37:50 -0700 | [diff] [blame] | 2210 | read_unlock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | |
Eric Dumazet | 689c96c | 2009-04-23 03:39:04 +0000 | [diff] [blame] | 2212 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2213 | } |
| 2214 | |
| 2215 | /*-------------------------------- Monitoring -------------------------------*/ |
| 2216 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2217 | |
| 2218 | static int bond_miimon_inspect(struct bonding *bond) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2219 | { |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2220 | struct slave *slave; |
| 2221 | int i, link_state, commit = 0; |
Jiri Pirko | 41f8910 | 2009-04-24 03:57:29 +0000 | [diff] [blame] | 2222 | bool ignore_updelay; |
| 2223 | |
| 2224 | ignore_updelay = !bond->curr_active_slave ? true : false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2225 | |
| 2226 | bond_for_each_slave(bond, slave, i) { |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2227 | slave->new_link = BOND_LINK_NOCHANGE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2228 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2229 | link_state = bond_check_dev_link(bond, slave->dev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2230 | |
| 2231 | switch (slave->link) { |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2232 | case BOND_LINK_UP: |
| 2233 | if (link_state) |
| 2234 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2235 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2236 | slave->link = BOND_LINK_FAIL; |
| 2237 | slave->delay = bond->params.downdelay; |
| 2238 | if (slave->delay) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2239 | pr_info(DRV_NAME |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2240 | ": %s: link status down for %s" |
| 2241 | "interface %s, disabling it in %d ms.\n", |
| 2242 | bond->dev->name, |
| 2243 | (bond->params.mode == |
| 2244 | BOND_MODE_ACTIVEBACKUP) ? |
| 2245 | ((slave->state == BOND_STATE_ACTIVE) ? |
| 2246 | "active " : "backup ") : "", |
| 2247 | slave->dev->name, |
| 2248 | bond->params.downdelay * bond->params.miimon); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2249 | } |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2250 | /*FALLTHRU*/ |
| 2251 | case BOND_LINK_FAIL: |
| 2252 | if (link_state) { |
| 2253 | /* |
| 2254 | * recovered before downdelay expired |
| 2255 | */ |
| 2256 | slave->link = BOND_LINK_UP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2257 | slave->jiffies = jiffies; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2258 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2259 | ": %s: link status up again after %d " |
| 2260 | "ms for interface %s.\n", |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 2261 | bond->dev->name, |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2262 | (bond->params.downdelay - slave->delay) * |
| 2263 | bond->params.miimon, |
| 2264 | slave->dev->name); |
| 2265 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2266 | } |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2267 | |
| 2268 | if (slave->delay <= 0) { |
| 2269 | slave->new_link = BOND_LINK_DOWN; |
| 2270 | commit++; |
| 2271 | continue; |
| 2272 | } |
| 2273 | |
| 2274 | slave->delay--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2275 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2276 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2277 | case BOND_LINK_DOWN: |
| 2278 | if (!link_state) |
| 2279 | continue; |
| 2280 | |
| 2281 | slave->link = BOND_LINK_BACK; |
| 2282 | slave->delay = bond->params.updelay; |
| 2283 | |
| 2284 | if (slave->delay) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2285 | pr_info(DRV_NAME |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2286 | ": %s: link status up for " |
| 2287 | "interface %s, enabling it in %d ms.\n", |
| 2288 | bond->dev->name, slave->dev->name, |
Jiri Pirko | 41f8910 | 2009-04-24 03:57:29 +0000 | [diff] [blame] | 2289 | ignore_updelay ? 0 : |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2290 | bond->params.updelay * |
| 2291 | bond->params.miimon); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | } |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2293 | /*FALLTHRU*/ |
| 2294 | case BOND_LINK_BACK: |
| 2295 | if (!link_state) { |
| 2296 | slave->link = BOND_LINK_DOWN; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2297 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2298 | ": %s: link status down again after %d " |
| 2299 | "ms for interface %s.\n", |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 2300 | bond->dev->name, |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2301 | (bond->params.updelay - slave->delay) * |
| 2302 | bond->params.miimon, |
| 2303 | slave->dev->name); |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2304 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2305 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2306 | } |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2307 | |
Jiri Pirko | 41f8910 | 2009-04-24 03:57:29 +0000 | [diff] [blame] | 2308 | if (ignore_updelay) |
| 2309 | slave->delay = 0; |
| 2310 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2311 | if (slave->delay <= 0) { |
| 2312 | slave->new_link = BOND_LINK_UP; |
| 2313 | commit++; |
Jiri Pirko | 41f8910 | 2009-04-24 03:57:29 +0000 | [diff] [blame] | 2314 | ignore_updelay = false; |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2315 | continue; |
| 2316 | } |
| 2317 | |
| 2318 | slave->delay--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2319 | break; |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2320 | } |
| 2321 | } |
| 2322 | |
| 2323 | return commit; |
| 2324 | } |
| 2325 | |
| 2326 | static void bond_miimon_commit(struct bonding *bond) |
| 2327 | { |
| 2328 | struct slave *slave; |
| 2329 | int i; |
| 2330 | |
| 2331 | bond_for_each_slave(bond, slave, i) { |
| 2332 | switch (slave->new_link) { |
| 2333 | case BOND_LINK_NOCHANGE: |
| 2334 | continue; |
| 2335 | |
| 2336 | case BOND_LINK_UP: |
| 2337 | slave->link = BOND_LINK_UP; |
| 2338 | slave->jiffies = jiffies; |
| 2339 | |
| 2340 | if (bond->params.mode == BOND_MODE_8023AD) { |
| 2341 | /* prevent it from being the active one */ |
| 2342 | slave->state = BOND_STATE_BACKUP; |
| 2343 | } else if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) { |
| 2344 | /* make it immediately active */ |
| 2345 | slave->state = BOND_STATE_ACTIVE; |
| 2346 | } else if (slave != bond->primary_slave) { |
| 2347 | /* prevent it from being the active one */ |
| 2348 | slave->state = BOND_STATE_BACKUP; |
| 2349 | } |
| 2350 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2351 | pr_info(DRV_NAME |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2352 | ": %s: link status definitely " |
| 2353 | "up for interface %s.\n", |
| 2354 | bond->dev->name, slave->dev->name); |
| 2355 | |
| 2356 | /* notify ad that the link status has changed */ |
| 2357 | if (bond->params.mode == BOND_MODE_8023AD) |
| 2358 | bond_3ad_handle_link_change(slave, BOND_LINK_UP); |
| 2359 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 2360 | if (bond_is_lb(bond)) |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2361 | bond_alb_handle_link_change(bond, slave, |
| 2362 | BOND_LINK_UP); |
| 2363 | |
| 2364 | if (!bond->curr_active_slave || |
| 2365 | (slave == bond->primary_slave)) |
| 2366 | goto do_failover; |
| 2367 | |
| 2368 | continue; |
| 2369 | |
| 2370 | case BOND_LINK_DOWN: |
Jay Vosburgh | fba4acd | 2008-10-30 17:41:14 -0700 | [diff] [blame] | 2371 | if (slave->link_failure_count < UINT_MAX) |
| 2372 | slave->link_failure_count++; |
| 2373 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2374 | slave->link = BOND_LINK_DOWN; |
| 2375 | |
| 2376 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP || |
| 2377 | bond->params.mode == BOND_MODE_8023AD) |
| 2378 | bond_set_slave_inactive_flags(slave); |
| 2379 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2380 | pr_info(DRV_NAME |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2381 | ": %s: link status definitely down for " |
| 2382 | "interface %s, disabling it\n", |
| 2383 | bond->dev->name, slave->dev->name); |
| 2384 | |
| 2385 | if (bond->params.mode == BOND_MODE_8023AD) |
| 2386 | bond_3ad_handle_link_change(slave, |
| 2387 | BOND_LINK_DOWN); |
| 2388 | |
Jiri Pirko | ae63e80 | 2009-05-27 05:42:36 +0000 | [diff] [blame] | 2389 | if (bond_is_lb(bond)) |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2390 | bond_alb_handle_link_change(bond, slave, |
| 2391 | BOND_LINK_DOWN); |
| 2392 | |
| 2393 | if (slave == bond->curr_active_slave) |
| 2394 | goto do_failover; |
| 2395 | |
| 2396 | continue; |
| 2397 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2398 | default: |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2399 | pr_err(DRV_NAME |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2400 | ": %s: invalid new link %d on slave %s\n", |
| 2401 | bond->dev->name, slave->new_link, |
| 2402 | slave->dev->name); |
| 2403 | slave->new_link = BOND_LINK_NOCHANGE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2404 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2405 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2406 | } |
| 2407 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2408 | do_failover: |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2409 | ASSERT_RTNL(); |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2410 | write_lock_bh(&bond->curr_slave_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2411 | bond_select_active_slave(bond); |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2412 | write_unlock_bh(&bond->curr_slave_lock); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2413 | } |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2414 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2415 | bond_set_carrier(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2416 | } |
| 2417 | |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2418 | /* |
| 2419 | * bond_mii_monitor |
| 2420 | * |
| 2421 | * Really a wrapper that splits the mii monitor into two phases: an |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2422 | * inspection, then (if inspection indicates something needs to be done) |
| 2423 | * an acquisition of appropriate locks followed by a commit phase to |
| 2424 | * implement whatever link state changes are indicated. |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2425 | */ |
| 2426 | void bond_mii_monitor(struct work_struct *work) |
| 2427 | { |
| 2428 | struct bonding *bond = container_of(work, struct bonding, |
| 2429 | mii_work.work); |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2430 | |
| 2431 | read_lock(&bond->lock); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2432 | if (bond->kill_timers) |
| 2433 | goto out; |
| 2434 | |
| 2435 | if (bond->slave_cnt == 0) |
| 2436 | goto re_arm; |
Jay Vosburgh | b59f9f7 | 2008-06-13 18:12:03 -0700 | [diff] [blame] | 2437 | |
| 2438 | if (bond->send_grat_arp) { |
| 2439 | read_lock(&bond->curr_slave_lock); |
| 2440 | bond_send_gratuitous_arp(bond); |
| 2441 | read_unlock(&bond->curr_slave_lock); |
| 2442 | } |
| 2443 | |
Brian Haley | 305d552 | 2008-11-04 17:51:14 -0800 | [diff] [blame] | 2444 | if (bond->send_unsol_na) { |
| 2445 | read_lock(&bond->curr_slave_lock); |
| 2446 | bond_send_unsolicited_na(bond); |
| 2447 | read_unlock(&bond->curr_slave_lock); |
| 2448 | } |
| 2449 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2450 | if (bond_miimon_inspect(bond)) { |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2451 | read_unlock(&bond->lock); |
| 2452 | rtnl_lock(); |
| 2453 | read_lock(&bond->lock); |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2454 | |
| 2455 | bond_miimon_commit(bond); |
| 2456 | |
Jay Vosburgh | 5655662 | 2008-01-17 16:25:03 -0800 | [diff] [blame] | 2457 | read_unlock(&bond->lock); |
| 2458 | rtnl_unlock(); /* might sleep, hold no other locks */ |
| 2459 | read_lock(&bond->lock); |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2460 | } |
| 2461 | |
Jay Vosburgh | f0c76d6 | 2008-07-02 18:21:58 -0700 | [diff] [blame] | 2462 | re_arm: |
| 2463 | if (bond->params.miimon) |
| 2464 | queue_delayed_work(bond->wq, &bond->mii_work, |
| 2465 | msecs_to_jiffies(bond->params.miimon)); |
| 2466 | out: |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2467 | read_unlock(&bond->lock); |
Jay Vosburgh | 0b0eef6 | 2007-10-17 17:37:48 -0700 | [diff] [blame] | 2468 | } |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2469 | |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 2470 | static __be32 bond_glean_dev_ip(struct net_device *dev) |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2471 | { |
| 2472 | struct in_device *idev; |
| 2473 | struct in_ifaddr *ifa; |
Al Viro | a144ea4 | 2006-09-28 18:00:55 -0700 | [diff] [blame] | 2474 | __be32 addr = 0; |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2475 | |
| 2476 | if (!dev) |
| 2477 | return 0; |
| 2478 | |
| 2479 | rcu_read_lock(); |
Herbert Xu | e5ed639 | 2005-10-03 14:35:55 -0700 | [diff] [blame] | 2480 | idev = __in_dev_get_rcu(dev); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2481 | if (!idev) |
| 2482 | goto out; |
| 2483 | |
| 2484 | ifa = idev->ifa_list; |
| 2485 | if (!ifa) |
| 2486 | goto out; |
| 2487 | |
| 2488 | addr = ifa->ifa_local; |
| 2489 | out: |
| 2490 | rcu_read_unlock(); |
| 2491 | return addr; |
| 2492 | } |
| 2493 | |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 2494 | static int bond_has_this_ip(struct bonding *bond, __be32 ip) |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2495 | { |
Pavel Emelyanov | 0883bec | 2008-05-17 21:10:10 -0700 | [diff] [blame] | 2496 | struct vlan_entry *vlan; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2497 | |
| 2498 | if (ip == bond->master_ip) |
| 2499 | return 1; |
| 2500 | |
Pavel Emelyanov | 0883bec | 2008-05-17 21:10:10 -0700 | [diff] [blame] | 2501 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2502 | if (ip == vlan->vlan_ip) |
| 2503 | return 1; |
| 2504 | } |
| 2505 | |
| 2506 | return 0; |
| 2507 | } |
| 2508 | |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2509 | /* |
| 2510 | * We go to the (large) trouble of VLAN tagging ARP frames because |
| 2511 | * switches in VLAN mode (especially if ports are configured as |
| 2512 | * "native" to a VLAN) might not pass non-tagged frames. |
| 2513 | */ |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 2514 | static void bond_arp_send(struct net_device *slave_dev, int arp_op, __be32 dest_ip, __be32 src_ip, unsigned short vlan_id) |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2515 | { |
| 2516 | struct sk_buff *skb; |
| 2517 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 2518 | pr_debug("arp %d on slave %s: dst %x src %x vid %d\n", arp_op, |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2519 | slave_dev->name, dest_ip, src_ip, vlan_id); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2520 | |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2521 | skb = arp_create(arp_op, ETH_P_ARP, dest_ip, slave_dev, src_ip, |
| 2522 | NULL, slave_dev->dev_addr, NULL); |
| 2523 | |
| 2524 | if (!skb) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2525 | pr_err(DRV_NAME ": ARP packet allocation failed\n"); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2526 | return; |
| 2527 | } |
| 2528 | if (vlan_id) { |
| 2529 | skb = vlan_put_tag(skb, vlan_id); |
| 2530 | if (!skb) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2531 | pr_err(DRV_NAME ": failed to insert VLAN tag\n"); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2532 | return; |
| 2533 | } |
| 2534 | } |
| 2535 | arp_xmit(skb); |
| 2536 | } |
| 2537 | |
| 2538 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2539 | static void bond_arp_send_all(struct bonding *bond, struct slave *slave) |
| 2540 | { |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2541 | int i, vlan_id, rv; |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 2542 | __be32 *targets = bond->params.arp_targets; |
Pavel Emelyanov | 0883bec | 2008-05-17 21:10:10 -0700 | [diff] [blame] | 2543 | struct vlan_entry *vlan; |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2544 | struct net_device *vlan_dev; |
| 2545 | struct flowi fl; |
| 2546 | struct rtable *rt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2547 | |
Mitch Williams | 6b78056 | 2005-11-09 10:36:19 -0800 | [diff] [blame] | 2548 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
| 2549 | if (!targets[i]) |
Brian Haley | 5a31bec | 2009-04-13 00:11:30 -0700 | [diff] [blame] | 2550 | break; |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 2551 | pr_debug("basa: target %x\n", targets[i]); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2552 | if (list_empty(&bond->vlan_list)) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 2553 | pr_debug("basa: empty vlan: arp_send\n"); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2554 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
| 2555 | bond->master_ip, 0); |
| 2556 | continue; |
| 2557 | } |
| 2558 | |
| 2559 | /* |
| 2560 | * If VLANs are configured, we do a route lookup to |
| 2561 | * determine which VLAN interface would be used, so we |
| 2562 | * can tag the ARP with the proper VLAN tag. |
| 2563 | */ |
| 2564 | memset(&fl, 0, sizeof(fl)); |
| 2565 | fl.fl4_dst = targets[i]; |
| 2566 | fl.fl4_tos = RTO_ONLINK; |
| 2567 | |
Denis V. Lunev | f206351 | 2008-01-22 22:07:34 -0800 | [diff] [blame] | 2568 | rv = ip_route_output_key(&init_net, &rt, &fl); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2569 | if (rv) { |
| 2570 | if (net_ratelimit()) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2571 | pr_warning(DRV_NAME |
Harvey Harrison | 6377943 | 2008-10-31 00:56:00 -0700 | [diff] [blame] | 2572 | ": %s: no route to arp_ip_target %pI4\n", |
| 2573 | bond->dev->name, &fl.fl4_dst); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2574 | } |
| 2575 | continue; |
| 2576 | } |
| 2577 | |
| 2578 | /* |
| 2579 | * This target is not on a VLAN |
| 2580 | */ |
| 2581 | if (rt->u.dst.dev == bond->dev) { |
Jay Vosburgh | ed4b9f8 | 2005-09-14 14:52:09 -0700 | [diff] [blame] | 2582 | ip_rt_put(rt); |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 2583 | pr_debug("basa: rtdev == bond->dev: arp_send\n"); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2584 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
| 2585 | bond->master_ip, 0); |
| 2586 | continue; |
| 2587 | } |
| 2588 | |
| 2589 | vlan_id = 0; |
Pavel Emelyanov | 0883bec | 2008-05-17 21:10:10 -0700 | [diff] [blame] | 2590 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
Dan Aloni | 5c15bde | 2007-03-02 20:44:51 -0800 | [diff] [blame] | 2591 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2592 | if (vlan_dev == rt->u.dst.dev) { |
| 2593 | vlan_id = vlan->vlan_id; |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 2594 | pr_debug("basa: vlan match on %s %d\n", |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2595 | vlan_dev->name, vlan_id); |
| 2596 | break; |
| 2597 | } |
| 2598 | } |
| 2599 | |
| 2600 | if (vlan_id) { |
Jay Vosburgh | ed4b9f8 | 2005-09-14 14:52:09 -0700 | [diff] [blame] | 2601 | ip_rt_put(rt); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2602 | bond_arp_send(slave->dev, ARPOP_REQUEST, targets[i], |
| 2603 | vlan->vlan_ip, vlan_id); |
| 2604 | continue; |
| 2605 | } |
| 2606 | |
| 2607 | if (net_ratelimit()) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2608 | pr_warning(DRV_NAME |
Harvey Harrison | 6377943 | 2008-10-31 00:56:00 -0700 | [diff] [blame] | 2609 | ": %s: no path to arp_ip_target %pI4 via rt.dev %s\n", |
| 2610 | bond->dev->name, &fl.fl4_dst, |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2611 | rt->u.dst.dev ? rt->u.dst.dev->name : "NULL"); |
| 2612 | } |
Jay Vosburgh | ed4b9f8 | 2005-09-14 14:52:09 -0700 | [diff] [blame] | 2613 | ip_rt_put(rt); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2614 | } |
| 2615 | } |
| 2616 | |
| 2617 | /* |
| 2618 | * Kick out a gratuitous ARP for an IP on the bonding master plus one |
| 2619 | * for each VLAN above us. |
Jay Vosburgh | b59f9f7 | 2008-06-13 18:12:03 -0700 | [diff] [blame] | 2620 | * |
| 2621 | * Caller must hold curr_slave_lock for read or better |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2622 | */ |
| 2623 | static void bond_send_gratuitous_arp(struct bonding *bond) |
| 2624 | { |
| 2625 | struct slave *slave = bond->curr_active_slave; |
| 2626 | struct vlan_entry *vlan; |
| 2627 | struct net_device *vlan_dev; |
| 2628 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 2629 | pr_debug("bond_send_grat_arp: bond %s slave %s\n", bond->dev->name, |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2630 | slave ? slave->dev->name : "NULL"); |
Jay Vosburgh | b59f9f7 | 2008-06-13 18:12:03 -0700 | [diff] [blame] | 2631 | |
| 2632 | if (!slave || !bond->send_grat_arp || |
| 2633 | test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state)) |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2634 | return; |
| 2635 | |
Jay Vosburgh | b59f9f7 | 2008-06-13 18:12:03 -0700 | [diff] [blame] | 2636 | bond->send_grat_arp--; |
| 2637 | |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2638 | if (bond->master_ip) { |
| 2639 | bond_arp_send(slave->dev, ARPOP_REPLY, bond->master_ip, |
Moni Shoua | 1053f62 | 2007-10-09 19:43:42 -0700 | [diff] [blame] | 2640 | bond->master_ip, 0); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2641 | } |
| 2642 | |
| 2643 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
Dan Aloni | 5c15bde | 2007-03-02 20:44:51 -0800 | [diff] [blame] | 2644 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 2645 | if (vlan->vlan_ip) { |
| 2646 | bond_arp_send(slave->dev, ARPOP_REPLY, vlan->vlan_ip, |
| 2647 | vlan->vlan_ip, vlan->vlan_id); |
| 2648 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2649 | } |
| 2650 | } |
| 2651 | |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 2652 | 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] | 2653 | { |
| 2654 | int i; |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 2655 | __be32 *targets = bond->params.arp_targets; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2656 | |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2657 | for (i = 0; (i < BOND_MAX_ARP_TARGETS) && targets[i]; i++) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 2658 | pr_debug("bva: sip %pI4 tip %pI4 t[%d] %pI4 bhti(tip) %d\n", |
Harvey Harrison | 6377943 | 2008-10-31 00:56:00 -0700 | [diff] [blame] | 2659 | &sip, &tip, i, &targets[i], bond_has_this_ip(bond, tip)); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2660 | if (sip == targets[i]) { |
| 2661 | if (bond_has_this_ip(bond, tip)) |
| 2662 | slave->last_arp_rx = jiffies; |
| 2663 | return; |
| 2664 | } |
| 2665 | } |
| 2666 | } |
| 2667 | |
| 2668 | static int bond_arp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev) |
| 2669 | { |
| 2670 | struct arphdr *arp; |
| 2671 | struct slave *slave; |
| 2672 | struct bonding *bond; |
| 2673 | unsigned char *arp_ptr; |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 2674 | __be32 sip, tip; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2675 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 2676 | if (dev_net(dev) != &init_net) |
Eric W. Biederman | e730c15 | 2007-09-17 11:53:39 -0700 | [diff] [blame] | 2677 | goto out; |
| 2678 | |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2679 | if (!(dev->priv_flags & IFF_BONDING) || !(dev->flags & IFF_MASTER)) |
| 2680 | goto out; |
| 2681 | |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 2682 | bond = netdev_priv(dev); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2683 | read_lock(&bond->lock); |
| 2684 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 2685 | pr_debug("bond_arp_rcv: bond %s skb->dev %s orig_dev %s\n", |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2686 | bond->dev->name, skb->dev ? skb->dev->name : "NULL", |
| 2687 | orig_dev ? orig_dev->name : "NULL"); |
| 2688 | |
| 2689 | slave = bond_get_slave_by_dev(bond, orig_dev); |
| 2690 | if (!slave || !slave_do_arp_validate(bond, slave)) |
| 2691 | goto out_unlock; |
| 2692 | |
Pavel Emelyanov | 988b705 | 2008-03-03 12:20:57 -0800 | [diff] [blame] | 2693 | if (!pskb_may_pull(skb, arp_hdr_len(dev))) |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2694 | goto out_unlock; |
| 2695 | |
Arnaldo Carvalho de Melo | d0a92be | 2007-03-12 20:56:31 -0300 | [diff] [blame] | 2696 | arp = arp_hdr(skb); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2697 | if (arp->ar_hln != dev->addr_len || |
| 2698 | skb->pkt_type == PACKET_OTHERHOST || |
| 2699 | skb->pkt_type == PACKET_LOOPBACK || |
| 2700 | arp->ar_hrd != htons(ARPHRD_ETHER) || |
| 2701 | arp->ar_pro != htons(ETH_P_IP) || |
| 2702 | arp->ar_pln != 4) |
| 2703 | goto out_unlock; |
| 2704 | |
| 2705 | arp_ptr = (unsigned char *)(arp + 1); |
| 2706 | arp_ptr += dev->addr_len; |
| 2707 | memcpy(&sip, arp_ptr, 4); |
| 2708 | arp_ptr += 4 + dev->addr_len; |
| 2709 | memcpy(&tip, arp_ptr, 4); |
| 2710 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 2711 | pr_debug("bond_arp_rcv: %s %s/%d av %d sv %d sip %pI4 tip %pI4\n", |
Harvey Harrison | 6377943 | 2008-10-31 00:56:00 -0700 | [diff] [blame] | 2712 | bond->dev->name, slave->dev->name, slave->state, |
| 2713 | bond->params.arp_validate, slave_do_arp_validate(bond, slave), |
| 2714 | &sip, &tip); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2715 | |
| 2716 | /* |
| 2717 | * Backup slaves won't see the ARP reply, but do come through |
| 2718 | * here for each ARP probe (so we swap the sip/tip to validate |
| 2719 | * the probe). In a "redundant switch, common router" type of |
| 2720 | * configuration, the ARP probe will (hopefully) travel from |
| 2721 | * the active, through one switch, the router, then the other |
| 2722 | * switch before reaching the backup. |
| 2723 | */ |
| 2724 | if (slave->state == BOND_STATE_ACTIVE) |
| 2725 | bond_validate_arp(bond, slave, sip, tip); |
| 2726 | else |
| 2727 | bond_validate_arp(bond, slave, tip, sip); |
| 2728 | |
| 2729 | out_unlock: |
| 2730 | read_unlock(&bond->lock); |
| 2731 | out: |
| 2732 | dev_kfree_skb(skb); |
| 2733 | return NET_RX_SUCCESS; |
| 2734 | } |
| 2735 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2736 | /* |
| 2737 | * this function is called regularly to monitor each slave's link |
| 2738 | * ensuring that traffic is being sent and received when arp monitoring |
| 2739 | * is used in load-balancing mode. if the adapter has been dormant, then an |
| 2740 | * arp is transmitted to generate traffic. see activebackup_arp_monitor for |
| 2741 | * arp monitoring in active backup mode. |
| 2742 | */ |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 2743 | void bond_loadbalance_arp_mon(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2744 | { |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 2745 | struct bonding *bond = container_of(work, struct bonding, |
| 2746 | arp_work.work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2747 | struct slave *slave, *oldcurrent; |
| 2748 | int do_failover = 0; |
| 2749 | int delta_in_ticks; |
| 2750 | int i; |
| 2751 | |
| 2752 | read_lock(&bond->lock); |
| 2753 | |
Jay Vosburgh | 5ce0da8 | 2008-05-17 21:10:07 -0700 | [diff] [blame] | 2754 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2755 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2756 | if (bond->kill_timers) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2757 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2758 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2759 | if (bond->slave_cnt == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2760 | goto re_arm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2761 | |
| 2762 | read_lock(&bond->curr_slave_lock); |
| 2763 | oldcurrent = bond->curr_active_slave; |
| 2764 | read_unlock(&bond->curr_slave_lock); |
| 2765 | |
| 2766 | /* see if any of the previous devices are up now (i.e. they have |
| 2767 | * xmt and rcv traffic). the curr_active_slave does not come into |
| 2768 | * the picture unless it is null. also, slave->jiffies is not needed |
| 2769 | * here because we send an arp on each slave and give a slave as |
| 2770 | * long as it needs to get the tx/rx within the delta. |
| 2771 | * TODO: what about up/down delay in arp mode? it wasn't here before |
| 2772 | * so it can wait |
| 2773 | */ |
| 2774 | bond_for_each_slave(bond, slave, i) { |
| 2775 | if (slave->link != BOND_LINK_UP) { |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 2776 | if (time_before_eq(jiffies, dev_trans_start(slave->dev) + delta_in_ticks) && |
David Sterba | b63bb73 | 2007-12-06 23:40:33 -0800 | [diff] [blame] | 2777 | time_before_eq(jiffies, slave->dev->last_rx + delta_in_ticks)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2778 | |
| 2779 | slave->link = BOND_LINK_UP; |
| 2780 | slave->state = BOND_STATE_ACTIVE; |
| 2781 | |
| 2782 | /* primary_slave has no meaning in round-robin |
| 2783 | * mode. the window of a slave being up and |
| 2784 | * curr_active_slave being null after enslaving |
| 2785 | * is closed. |
| 2786 | */ |
| 2787 | if (!oldcurrent) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2788 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2789 | ": %s: link status definitely " |
| 2790 | "up for interface %s, ", |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 2791 | bond->dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2792 | slave->dev->name); |
| 2793 | do_failover = 1; |
| 2794 | } else { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2795 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2796 | ": %s: interface %s is now up\n", |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 2797 | bond->dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2798 | slave->dev->name); |
| 2799 | } |
| 2800 | } |
| 2801 | } else { |
| 2802 | /* slave->link == BOND_LINK_UP */ |
| 2803 | |
| 2804 | /* not all switches will respond to an arp request |
| 2805 | * when the source ip is 0, so don't take the link down |
| 2806 | * if we don't know our ip yet |
| 2807 | */ |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 2808 | if (time_after_eq(jiffies, dev_trans_start(slave->dev) + 2*delta_in_ticks) || |
Jay Vosburgh | 4b8a923 | 2008-05-17 21:10:08 -0700 | [diff] [blame] | 2809 | (time_after_eq(jiffies, slave->dev->last_rx + 2*delta_in_ticks))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2810 | |
| 2811 | slave->link = BOND_LINK_DOWN; |
| 2812 | slave->state = BOND_STATE_BACKUP; |
| 2813 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2814 | if (slave->link_failure_count < UINT_MAX) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2815 | slave->link_failure_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2816 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2817 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2818 | ": %s: interface %s is now down.\n", |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 2819 | bond->dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2820 | slave->dev->name); |
| 2821 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2822 | if (slave == oldcurrent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2823 | do_failover = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2824 | } |
| 2825 | } |
| 2826 | |
| 2827 | /* note: if switch is in round-robin mode, all links |
| 2828 | * must tx arp to ensure all links rx an arp - otherwise |
| 2829 | * links may oscillate or not come up at all; if switch is |
| 2830 | * in something like xor mode, there is nothing we can |
| 2831 | * do - all replies will be rx'ed on same link causing slaves |
| 2832 | * to be unstable during low/no traffic periods |
| 2833 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2834 | if (IS_UP(slave->dev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2835 | bond_arp_send_all(bond, slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2836 | } |
| 2837 | |
| 2838 | if (do_failover) { |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2839 | write_lock_bh(&bond->curr_slave_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2840 | |
| 2841 | bond_select_active_slave(bond); |
| 2842 | |
Jay Vosburgh | 059fe7a | 2007-10-17 17:37:49 -0700 | [diff] [blame] | 2843 | write_unlock_bh(&bond->curr_slave_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2844 | } |
| 2845 | |
| 2846 | re_arm: |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 2847 | if (bond->params.arp_interval) |
| 2848 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2849 | out: |
| 2850 | read_unlock(&bond->lock); |
| 2851 | } |
| 2852 | |
| 2853 | /* |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2854 | * Called to inspect slaves for active-backup mode ARP monitor link state |
| 2855 | * changes. Sets new_link in slaves to specify what action should take |
| 2856 | * place for the slave. Returns 0 if no changes are found, >0 if changes |
| 2857 | * to link states must be committed. |
| 2858 | * |
| 2859 | * Called with bond->lock held for read. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2860 | */ |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2861 | static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2862 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2863 | struct slave *slave; |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2864 | int i, commit = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2865 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2866 | bond_for_each_slave(bond, slave, i) { |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2867 | slave->new_link = BOND_LINK_NOCHANGE; |
| 2868 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2869 | if (slave->link != BOND_LINK_UP) { |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2870 | if (time_before_eq(jiffies, slave_last_rx(bond, slave) + |
| 2871 | delta_in_ticks)) { |
| 2872 | slave->new_link = BOND_LINK_UP; |
| 2873 | commit++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2874 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2875 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2876 | continue; |
| 2877 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2878 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2879 | /* |
| 2880 | * Give slaves 2*delta after being enslaved or made |
| 2881 | * active. This avoids bouncing, as the last receive |
| 2882 | * times need a full ARP monitor cycle to be updated. |
| 2883 | */ |
| 2884 | if (!time_after_eq(jiffies, slave->jiffies + |
| 2885 | 2 * delta_in_ticks)) |
| 2886 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2887 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2888 | /* |
| 2889 | * Backup slave is down if: |
| 2890 | * - No current_arp_slave AND |
| 2891 | * - more than 3*delta since last receive AND |
| 2892 | * - the bond has an IP address |
| 2893 | * |
| 2894 | * Note: a non-null current_arp_slave indicates |
| 2895 | * the curr_active_slave went down and we are |
| 2896 | * searching for a new one; under this condition |
| 2897 | * we only take the curr_active_slave down - this |
| 2898 | * gives each slave a chance to tx/rx traffic |
| 2899 | * before being taken out |
| 2900 | */ |
| 2901 | if (slave->state == BOND_STATE_BACKUP && |
| 2902 | !bond->current_arp_slave && |
| 2903 | time_after(jiffies, slave_last_rx(bond, slave) + |
| 2904 | 3 * delta_in_ticks)) { |
| 2905 | slave->new_link = BOND_LINK_DOWN; |
| 2906 | commit++; |
| 2907 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2908 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2909 | /* |
| 2910 | * Active slave is down if: |
| 2911 | * - more than 2*delta since transmitting OR |
| 2912 | * - (more than 2*delta since receive AND |
| 2913 | * the bond has an IP address) |
| 2914 | */ |
| 2915 | if ((slave->state == BOND_STATE_ACTIVE) && |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 2916 | (time_after_eq(jiffies, dev_trans_start(slave->dev) + |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2917 | 2 * delta_in_ticks) || |
| 2918 | (time_after_eq(jiffies, slave_last_rx(bond, slave) |
| 2919 | + 2 * delta_in_ticks)))) { |
| 2920 | slave->new_link = BOND_LINK_DOWN; |
| 2921 | commit++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2922 | } |
| 2923 | } |
| 2924 | |
| 2925 | read_lock(&bond->curr_slave_lock); |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2926 | |
| 2927 | /* |
| 2928 | * Trigger a commit if the primary option setting has changed. |
| 2929 | */ |
| 2930 | if (bond->primary_slave && |
| 2931 | (bond->primary_slave != bond->curr_active_slave) && |
| 2932 | (bond->primary_slave->link == BOND_LINK_UP)) |
| 2933 | commit++; |
| 2934 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2935 | read_unlock(&bond->curr_slave_lock); |
| 2936 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2937 | return commit; |
| 2938 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2939 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2940 | /* |
| 2941 | * Called to commit link state changes noted by inspection step of |
| 2942 | * active-backup mode ARP monitor. |
| 2943 | * |
| 2944 | * Called with RTNL and bond->lock for read. |
| 2945 | */ |
| 2946 | static void bond_ab_arp_commit(struct bonding *bond, int delta_in_ticks) |
| 2947 | { |
| 2948 | struct slave *slave; |
| 2949 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2950 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2951 | bond_for_each_slave(bond, slave, i) { |
| 2952 | switch (slave->new_link) { |
| 2953 | case BOND_LINK_NOCHANGE: |
| 2954 | continue; |
| 2955 | |
| 2956 | case BOND_LINK_UP: |
| 2957 | write_lock_bh(&bond->curr_slave_lock); |
| 2958 | |
| 2959 | if (!bond->curr_active_slave && |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 2960 | time_before_eq(jiffies, dev_trans_start(slave->dev) + |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2961 | delta_in_ticks)) { |
| 2962 | slave->link = BOND_LINK_UP; |
| 2963 | bond_change_active_slave(bond, slave); |
| 2964 | bond->current_arp_slave = NULL; |
| 2965 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2966 | pr_info(DRV_NAME |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2967 | ": %s: %s is up and now the " |
| 2968 | "active interface\n", |
| 2969 | bond->dev->name, slave->dev->name); |
| 2970 | |
| 2971 | } else if (bond->curr_active_slave != slave) { |
| 2972 | /* this slave has just come up but we |
| 2973 | * already have a current slave; this can |
| 2974 | * also happen if bond_enslave adds a new |
| 2975 | * slave that is up while we are searching |
| 2976 | * for a new slave |
| 2977 | */ |
| 2978 | slave->link = BOND_LINK_UP; |
| 2979 | bond_set_slave_inactive_flags(slave); |
| 2980 | bond->current_arp_slave = NULL; |
| 2981 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2982 | pr_info(DRV_NAME |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2983 | ": %s: backup interface %s is now up\n", |
| 2984 | bond->dev->name, slave->dev->name); |
| 2985 | } |
| 2986 | |
| 2987 | write_unlock_bh(&bond->curr_slave_lock); |
| 2988 | |
| 2989 | break; |
| 2990 | |
| 2991 | case BOND_LINK_DOWN: |
| 2992 | if (slave->link_failure_count < UINT_MAX) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2993 | slave->link_failure_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2994 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2995 | slave->link = BOND_LINK_DOWN; |
| 2996 | |
| 2997 | if (slave == bond->curr_active_slave) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 2998 | pr_info(DRV_NAME |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 2999 | ": %s: link status down for active " |
| 3000 | "interface %s, disabling it\n", |
| 3001 | bond->dev->name, slave->dev->name); |
| 3002 | |
| 3003 | bond_set_slave_inactive_flags(slave); |
| 3004 | |
| 3005 | write_lock_bh(&bond->curr_slave_lock); |
| 3006 | |
| 3007 | bond_select_active_slave(bond); |
| 3008 | if (bond->curr_active_slave) |
| 3009 | bond->curr_active_slave->jiffies = |
| 3010 | jiffies; |
| 3011 | |
| 3012 | write_unlock_bh(&bond->curr_slave_lock); |
| 3013 | |
| 3014 | bond->current_arp_slave = NULL; |
| 3015 | |
| 3016 | } else if (slave->state == BOND_STATE_BACKUP) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3017 | pr_info(DRV_NAME |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 3018 | ": %s: backup interface %s is now down\n", |
| 3019 | bond->dev->name, slave->dev->name); |
| 3020 | |
| 3021 | bond_set_slave_inactive_flags(slave); |
| 3022 | } |
| 3023 | break; |
| 3024 | |
| 3025 | default: |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3026 | pr_err(DRV_NAME |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 3027 | ": %s: impossible: new_link %d on slave %s\n", |
| 3028 | bond->dev->name, slave->new_link, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3029 | slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3030 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3031 | } |
| 3032 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 3033 | /* |
| 3034 | * No race with changes to primary via sysfs, as we hold rtnl. |
| 3035 | */ |
| 3036 | if (bond->primary_slave && |
| 3037 | (bond->primary_slave != bond->curr_active_slave) && |
| 3038 | (bond->primary_slave->link == BOND_LINK_UP)) { |
| 3039 | write_lock_bh(&bond->curr_slave_lock); |
| 3040 | bond_change_active_slave(bond, bond->primary_slave); |
| 3041 | write_unlock_bh(&bond->curr_slave_lock); |
| 3042 | } |
| 3043 | |
| 3044 | bond_set_carrier(bond); |
| 3045 | } |
| 3046 | |
| 3047 | /* |
| 3048 | * Send ARP probes for active-backup mode ARP monitor. |
| 3049 | * |
| 3050 | * Called with bond->lock held for read. |
| 3051 | */ |
| 3052 | static void bond_ab_arp_probe(struct bonding *bond) |
| 3053 | { |
| 3054 | struct slave *slave; |
| 3055 | int i; |
| 3056 | |
| 3057 | read_lock(&bond->curr_slave_lock); |
| 3058 | |
| 3059 | if (bond->current_arp_slave && bond->curr_active_slave) |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3060 | pr_info(DRV_NAME "PROBE: c_arp %s && cas %s BAD\n", |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 3061 | bond->current_arp_slave->dev->name, |
| 3062 | bond->curr_active_slave->dev->name); |
| 3063 | |
| 3064 | if (bond->curr_active_slave) { |
| 3065 | bond_arp_send_all(bond, bond->curr_active_slave); |
| 3066 | read_unlock(&bond->curr_slave_lock); |
| 3067 | return; |
| 3068 | } |
| 3069 | |
| 3070 | read_unlock(&bond->curr_slave_lock); |
| 3071 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3072 | /* if we don't have a curr_active_slave, search for the next available |
| 3073 | * backup slave from the current_arp_slave and make it the candidate |
| 3074 | * for becoming the curr_active_slave |
| 3075 | */ |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 3076 | |
| 3077 | if (!bond->current_arp_slave) { |
| 3078 | bond->current_arp_slave = bond->first_slave; |
| 3079 | if (!bond->current_arp_slave) |
| 3080 | return; |
| 3081 | } |
| 3082 | |
| 3083 | bond_set_slave_inactive_flags(bond->current_arp_slave); |
| 3084 | |
| 3085 | /* search for next candidate */ |
| 3086 | bond_for_each_slave_from(bond, slave, i, bond->current_arp_slave->next) { |
| 3087 | if (IS_UP(slave->dev)) { |
| 3088 | slave->link = BOND_LINK_BACK; |
| 3089 | bond_set_slave_active_flags(slave); |
| 3090 | bond_arp_send_all(bond, slave); |
| 3091 | slave->jiffies = jiffies; |
| 3092 | bond->current_arp_slave = slave; |
| 3093 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3094 | } |
| 3095 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 3096 | /* if the link state is up at this point, we |
| 3097 | * mark it down - this can happen if we have |
| 3098 | * simultaneous link failures and |
| 3099 | * reselect_active_interface doesn't make this |
| 3100 | * one the current slave so it is still marked |
| 3101 | * up when it is actually down |
| 3102 | */ |
| 3103 | if (slave->link == BOND_LINK_UP) { |
| 3104 | slave->link = BOND_LINK_DOWN; |
| 3105 | if (slave->link_failure_count < UINT_MAX) |
| 3106 | slave->link_failure_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3107 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 3108 | bond_set_slave_inactive_flags(slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3109 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3110 | pr_info(DRV_NAME |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 3111 | ": %s: backup interface %s is now down.\n", |
| 3112 | bond->dev->name, slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3113 | } |
| 3114 | } |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 3115 | } |
| 3116 | |
| 3117 | void bond_activebackup_arp_mon(struct work_struct *work) |
| 3118 | { |
| 3119 | struct bonding *bond = container_of(work, struct bonding, |
| 3120 | arp_work.work); |
| 3121 | int delta_in_ticks; |
| 3122 | |
| 3123 | read_lock(&bond->lock); |
| 3124 | |
| 3125 | if (bond->kill_timers) |
| 3126 | goto out; |
| 3127 | |
| 3128 | delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); |
| 3129 | |
| 3130 | if (bond->slave_cnt == 0) |
| 3131 | goto re_arm; |
| 3132 | |
Jay Vosburgh | b59f9f7 | 2008-06-13 18:12:03 -0700 | [diff] [blame] | 3133 | if (bond->send_grat_arp) { |
| 3134 | read_lock(&bond->curr_slave_lock); |
| 3135 | bond_send_gratuitous_arp(bond); |
| 3136 | read_unlock(&bond->curr_slave_lock); |
| 3137 | } |
| 3138 | |
Brian Haley | 305d552 | 2008-11-04 17:51:14 -0800 | [diff] [blame] | 3139 | if (bond->send_unsol_na) { |
| 3140 | read_lock(&bond->curr_slave_lock); |
| 3141 | bond_send_unsolicited_na(bond); |
| 3142 | read_unlock(&bond->curr_slave_lock); |
| 3143 | } |
| 3144 | |
Jay Vosburgh | b2220ca | 2008-05-17 21:10:13 -0700 | [diff] [blame] | 3145 | if (bond_ab_arp_inspect(bond, delta_in_ticks)) { |
| 3146 | read_unlock(&bond->lock); |
| 3147 | rtnl_lock(); |
| 3148 | read_lock(&bond->lock); |
| 3149 | |
| 3150 | bond_ab_arp_commit(bond, delta_in_ticks); |
| 3151 | |
| 3152 | read_unlock(&bond->lock); |
| 3153 | rtnl_unlock(); |
| 3154 | read_lock(&bond->lock); |
| 3155 | } |
| 3156 | |
| 3157 | bond_ab_arp_probe(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3158 | |
| 3159 | re_arm: |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3160 | if (bond->params.arp_interval) |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 3161 | queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3162 | out: |
| 3163 | read_unlock(&bond->lock); |
| 3164 | } |
| 3165 | |
| 3166 | /*------------------------------ proc/seq_file-------------------------------*/ |
| 3167 | |
| 3168 | #ifdef CONFIG_PROC_FS |
| 3169 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3170 | static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos) |
Hannes Eder | 1f78d9f | 2009-02-14 11:15:33 +0000 | [diff] [blame] | 3171 | __acquires(&dev_base_lock) |
| 3172 | __acquires(&bond->lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3173 | { |
| 3174 | struct bonding *bond = seq->private; |
| 3175 | loff_t off = 0; |
| 3176 | struct slave *slave; |
| 3177 | int i; |
| 3178 | |
| 3179 | /* make sure the bond won't be taken away */ |
| 3180 | read_lock(&dev_base_lock); |
Jay Vosburgh | 6603a6f | 2007-10-17 17:37:50 -0700 | [diff] [blame] | 3181 | read_lock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3182 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3183 | if (*pos == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3184 | return SEQ_START_TOKEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3185 | |
| 3186 | bond_for_each_slave(bond, slave, i) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3187 | if (++off == *pos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3188 | return slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3189 | } |
| 3190 | |
| 3191 | return NULL; |
| 3192 | } |
| 3193 | |
| 3194 | static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| 3195 | { |
| 3196 | struct bonding *bond = seq->private; |
| 3197 | struct slave *slave = v; |
| 3198 | |
| 3199 | ++*pos; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3200 | if (v == SEQ_START_TOKEN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3201 | return bond->first_slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3202 | |
| 3203 | slave = slave->next; |
| 3204 | |
| 3205 | return (slave == bond->first_slave) ? NULL : slave; |
| 3206 | } |
| 3207 | |
| 3208 | static void bond_info_seq_stop(struct seq_file *seq, void *v) |
Hannes Eder | 1f78d9f | 2009-02-14 11:15:33 +0000 | [diff] [blame] | 3209 | __releases(&bond->lock) |
| 3210 | __releases(&dev_base_lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3211 | { |
| 3212 | struct bonding *bond = seq->private; |
| 3213 | |
Jay Vosburgh | 6603a6f | 2007-10-17 17:37:50 -0700 | [diff] [blame] | 3214 | read_unlock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3215 | read_unlock(&dev_base_lock); |
| 3216 | } |
| 3217 | |
| 3218 | static void bond_info_show_master(struct seq_file *seq) |
| 3219 | { |
| 3220 | struct bonding *bond = seq->private; |
| 3221 | struct slave *curr; |
Mitch Williams | 4756b02 | 2005-11-09 10:36:25 -0800 | [diff] [blame] | 3222 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3223 | |
| 3224 | read_lock(&bond->curr_slave_lock); |
| 3225 | curr = bond->curr_active_slave; |
| 3226 | read_unlock(&bond->curr_slave_lock); |
| 3227 | |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 3228 | seq_printf(seq, "Bonding Mode: %s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3229 | bond_mode_name(bond->params.mode)); |
| 3230 | |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 3231 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP && |
| 3232 | bond->params.fail_over_mac) |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 3233 | seq_printf(seq, " (fail_over_mac %s)", |
| 3234 | fail_over_mac_tbl[bond->params.fail_over_mac].modename); |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 3235 | |
| 3236 | seq_printf(seq, "\n"); |
| 3237 | |
Mitch Williams | c61b75a | 2005-11-09 10:35:13 -0800 | [diff] [blame] | 3238 | if (bond->params.mode == BOND_MODE_XOR || |
| 3239 | bond->params.mode == BOND_MODE_8023AD) { |
| 3240 | seq_printf(seq, "Transmit Hash Policy: %s (%d)\n", |
| 3241 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, |
| 3242 | bond->params.xmit_policy); |
| 3243 | } |
| 3244 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3245 | if (USES_PRIMARY(bond->params.mode)) { |
| 3246 | seq_printf(seq, "Primary Slave: %s\n", |
Mitch Williams | 0f418b2 | 2005-11-09 10:35:21 -0800 | [diff] [blame] | 3247 | (bond->primary_slave) ? |
| 3248 | bond->primary_slave->dev->name : "None"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3249 | |
| 3250 | seq_printf(seq, "Currently Active Slave: %s\n", |
| 3251 | (curr) ? curr->dev->name : "None"); |
| 3252 | } |
| 3253 | |
Jay Vosburgh | ff59c45 | 2006-03-27 13:27:43 -0800 | [diff] [blame] | 3254 | seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ? |
| 3255 | "up" : "down"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3256 | seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon); |
| 3257 | seq_printf(seq, "Up Delay (ms): %d\n", |
| 3258 | bond->params.updelay * bond->params.miimon); |
| 3259 | seq_printf(seq, "Down Delay (ms): %d\n", |
| 3260 | bond->params.downdelay * bond->params.miimon); |
| 3261 | |
Mitch Williams | 4756b02 | 2005-11-09 10:36:25 -0800 | [diff] [blame] | 3262 | |
| 3263 | /* ARP information */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3264 | if (bond->params.arp_interval > 0) { |
| 3265 | int printed = 0; |
Mitch Williams | 4756b02 | 2005-11-09 10:36:25 -0800 | [diff] [blame] | 3266 | seq_printf(seq, "ARP Polling Interval (ms): %d\n", |
| 3267 | bond->params.arp_interval); |
| 3268 | |
| 3269 | seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); |
| 3270 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3271 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { |
Mitch Williams | 4756b02 | 2005-11-09 10:36:25 -0800 | [diff] [blame] | 3272 | if (!bond->params.arp_targets[i]) |
Brian Haley | 5a31bec | 2009-04-13 00:11:30 -0700 | [diff] [blame] | 3273 | break; |
Mitch Williams | 4756b02 | 2005-11-09 10:36:25 -0800 | [diff] [blame] | 3274 | if (printed) |
| 3275 | seq_printf(seq, ","); |
Harvey Harrison | 8cf14e3 | 2008-10-29 22:43:33 -0700 | [diff] [blame] | 3276 | seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); |
Mitch Williams | 4756b02 | 2005-11-09 10:36:25 -0800 | [diff] [blame] | 3277 | printed = 1; |
| 3278 | } |
| 3279 | seq_printf(seq, "\n"); |
| 3280 | } |
| 3281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3282 | if (bond->params.mode == BOND_MODE_8023AD) { |
| 3283 | struct ad_info ad_info; |
| 3284 | |
| 3285 | seq_puts(seq, "\n802.3ad info\n"); |
| 3286 | seq_printf(seq, "LACP rate: %s\n", |
| 3287 | (bond->params.lacp_fast) ? "fast" : "slow"); |
Jay Vosburgh | fd989c8 | 2008-11-04 17:51:16 -0800 | [diff] [blame] | 3288 | seq_printf(seq, "Aggregator selection policy (ad_select): %s\n", |
| 3289 | ad_select_tbl[bond->params.ad_select].modename); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3290 | |
| 3291 | if (bond_3ad_get_active_agg_info(bond, &ad_info)) { |
| 3292 | seq_printf(seq, "bond %s has no active aggregator\n", |
| 3293 | bond->dev->name); |
| 3294 | } else { |
| 3295 | seq_printf(seq, "Active Aggregator Info:\n"); |
| 3296 | |
| 3297 | seq_printf(seq, "\tAggregator ID: %d\n", |
| 3298 | ad_info.aggregator_id); |
| 3299 | seq_printf(seq, "\tNumber of ports: %d\n", |
| 3300 | ad_info.ports); |
| 3301 | seq_printf(seq, "\tActor Key: %d\n", |
| 3302 | ad_info.actor_key); |
| 3303 | seq_printf(seq, "\tPartner Key: %d\n", |
| 3304 | ad_info.partner_key); |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 3305 | seq_printf(seq, "\tPartner Mac Address: %pM\n", |
| 3306 | ad_info.partner_system); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3307 | } |
| 3308 | } |
| 3309 | } |
| 3310 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3311 | static void bond_info_show_slave(struct seq_file *seq, |
| 3312 | const struct slave *slave) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3313 | { |
| 3314 | struct bonding *bond = seq->private; |
| 3315 | |
| 3316 | seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name); |
| 3317 | seq_printf(seq, "MII Status: %s\n", |
| 3318 | (slave->link == BOND_LINK_UP) ? "up" : "down"); |
Kenzo Iwami | 6550964 | 2006-09-22 21:53:08 -0700 | [diff] [blame] | 3319 | seq_printf(seq, "Link Failure Count: %u\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3320 | slave->link_failure_count); |
| 3321 | |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 3322 | seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3323 | |
| 3324 | if (bond->params.mode == BOND_MODE_8023AD) { |
| 3325 | const struct aggregator *agg |
| 3326 | = SLAVE_AD_INFO(slave).port.aggregator; |
| 3327 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3328 | if (agg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3329 | seq_printf(seq, "Aggregator ID: %d\n", |
| 3330 | agg->aggregator_identifier); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3331 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3332 | seq_puts(seq, "Aggregator ID: N/A\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3333 | } |
| 3334 | } |
| 3335 | |
| 3336 | static int bond_info_seq_show(struct seq_file *seq, void *v) |
| 3337 | { |
| 3338 | if (v == SEQ_START_TOKEN) { |
| 3339 | seq_printf(seq, "%s\n", version); |
| 3340 | bond_info_show_master(seq); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3341 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3342 | bond_info_show_slave(seq, v); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3343 | |
| 3344 | return 0; |
| 3345 | } |
| 3346 | |
Jan Engelhardt | 4101dec | 2009-01-14 13:52:18 -0800 | [diff] [blame] | 3347 | static const struct seq_operations bond_info_seq_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3348 | .start = bond_info_seq_start, |
| 3349 | .next = bond_info_seq_next, |
| 3350 | .stop = bond_info_seq_stop, |
| 3351 | .show = bond_info_seq_show, |
| 3352 | }; |
| 3353 | |
| 3354 | static int bond_info_open(struct inode *inode, struct file *file) |
| 3355 | { |
| 3356 | struct seq_file *seq; |
| 3357 | struct proc_dir_entry *proc; |
| 3358 | int res; |
| 3359 | |
| 3360 | res = seq_open(file, &bond_info_seq_ops); |
| 3361 | if (!res) { |
| 3362 | /* recover the pointer buried in proc_dir_entry data */ |
| 3363 | seq = file->private_data; |
| 3364 | proc = PDE(inode); |
| 3365 | seq->private = proc->data; |
| 3366 | } |
| 3367 | |
| 3368 | return res; |
| 3369 | } |
| 3370 | |
Arjan van de Ven | d54b1fd | 2007-02-12 00:55:34 -0800 | [diff] [blame] | 3371 | static const struct file_operations bond_info_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3372 | .owner = THIS_MODULE, |
| 3373 | .open = bond_info_open, |
| 3374 | .read = seq_read, |
| 3375 | .llseek = seq_lseek, |
| 3376 | .release = seq_release, |
| 3377 | }; |
| 3378 | |
| 3379 | static int bond_create_proc_entry(struct bonding *bond) |
| 3380 | { |
| 3381 | struct net_device *bond_dev = bond->dev; |
| 3382 | |
| 3383 | if (bond_proc_dir) { |
Denis V. Lunev | a95609c | 2008-04-29 01:02:29 -0700 | [diff] [blame] | 3384 | bond->proc_entry = proc_create_data(bond_dev->name, |
| 3385 | S_IRUGO, bond_proc_dir, |
| 3386 | &bond_info_fops, bond); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3387 | if (bond->proc_entry == NULL) |
| 3388 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3389 | ": Warning: Cannot create /proc/net/%s/%s\n", |
| 3390 | DRV_NAME, bond_dev->name); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3391 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3392 | memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3393 | } |
| 3394 | |
| 3395 | return 0; |
| 3396 | } |
| 3397 | |
| 3398 | static void bond_remove_proc_entry(struct bonding *bond) |
| 3399 | { |
| 3400 | if (bond_proc_dir && bond->proc_entry) { |
| 3401 | remove_proc_entry(bond->proc_file_name, bond_proc_dir); |
| 3402 | memset(bond->proc_file_name, 0, IFNAMSIZ); |
| 3403 | bond->proc_entry = NULL; |
| 3404 | } |
| 3405 | } |
| 3406 | |
| 3407 | /* Create the bonding directory under /proc/net, if doesn't exist yet. |
| 3408 | * Caller must hold rtnl_lock. |
| 3409 | */ |
| 3410 | static void bond_create_proc_dir(void) |
| 3411 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3412 | if (!bond_proc_dir) { |
Eric W. Biederman | 457c4cb | 2007-09-12 12:01:34 +0200 | [diff] [blame] | 3413 | bond_proc_dir = proc_mkdir(DRV_NAME, init_net.proc_net); |
Alexey Dobriyan | 99b7623 | 2009-03-25 22:48:06 +0300 | [diff] [blame] | 3414 | if (!bond_proc_dir) |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3415 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3416 | ": Warning: cannot create /proc/net/%s\n", |
| 3417 | DRV_NAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3418 | } |
| 3419 | } |
| 3420 | |
| 3421 | /* Destroy the bonding directory under /proc/net, if empty. |
| 3422 | * Caller must hold rtnl_lock. |
| 3423 | */ |
| 3424 | static void bond_destroy_proc_dir(void) |
| 3425 | { |
Alexey Dobriyan | 99b7623 | 2009-03-25 22:48:06 +0300 | [diff] [blame] | 3426 | if (bond_proc_dir) { |
Eric W. Biederman | 457c4cb | 2007-09-12 12:01:34 +0200 | [diff] [blame] | 3427 | remove_proc_entry(DRV_NAME, init_net.proc_net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3428 | bond_proc_dir = NULL; |
| 3429 | } |
| 3430 | } |
Jiri Pirko | aee64fa | 2009-05-05 06:20:51 +0000 | [diff] [blame] | 3431 | |
| 3432 | #else /* !CONFIG_PROC_FS */ |
| 3433 | |
| 3434 | static int bond_create_proc_entry(struct bonding *bond) |
| 3435 | { |
| 3436 | } |
| 3437 | |
| 3438 | static void bond_remove_proc_entry(struct bonding *bond) |
| 3439 | { |
| 3440 | } |
| 3441 | |
| 3442 | static void bond_create_proc_dir(void) |
| 3443 | { |
| 3444 | } |
| 3445 | |
| 3446 | static void bond_destroy_proc_dir(void) |
| 3447 | { |
| 3448 | } |
| 3449 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3450 | #endif /* CONFIG_PROC_FS */ |
| 3451 | |
Jiri Pirko | aee64fa | 2009-05-05 06:20:51 +0000 | [diff] [blame] | 3452 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3453 | /*-------------------------- netdev event handling --------------------------*/ |
| 3454 | |
| 3455 | /* |
| 3456 | * Change device name |
| 3457 | */ |
| 3458 | static int bond_event_changename(struct bonding *bond) |
| 3459 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3460 | bond_remove_proc_entry(bond); |
| 3461 | bond_create_proc_entry(bond); |
Stephen Hemminger | 7e08384 | 2009-06-12 19:02:46 +0000 | [diff] [blame] | 3462 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3463 | bond_destroy_sysfs_entry(bond); |
| 3464 | bond_create_sysfs_entry(bond); |
Stephen Hemminger | 7e08384 | 2009-06-12 19:02:46 +0000 | [diff] [blame] | 3465 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3466 | return NOTIFY_DONE; |
| 3467 | } |
| 3468 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3469 | static int bond_master_netdev_event(unsigned long event, |
| 3470 | struct net_device *bond_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3471 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3472 | struct bonding *event_bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3473 | |
| 3474 | switch (event) { |
| 3475 | case NETDEV_CHANGENAME: |
| 3476 | return bond_event_changename(event_bond); |
| 3477 | case NETDEV_UNREGISTER: |
Jay Vosburgh | 3b96c85 | 2008-01-17 16:25:00 -0800 | [diff] [blame] | 3478 | bond_release_all(event_bond->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3479 | break; |
| 3480 | default: |
| 3481 | break; |
| 3482 | } |
| 3483 | |
| 3484 | return NOTIFY_DONE; |
| 3485 | } |
| 3486 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3487 | static int bond_slave_netdev_event(unsigned long event, |
| 3488 | struct net_device *slave_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3489 | { |
| 3490 | struct net_device *bond_dev = slave_dev->master; |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3491 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3492 | |
| 3493 | switch (event) { |
| 3494 | case NETDEV_UNREGISTER: |
| 3495 | if (bond_dev) { |
Jay Vosburgh | 1284cd3 | 2007-10-15 16:44:27 -0700 | [diff] [blame] | 3496 | if (bond->setup_by_slave) |
| 3497 | bond_release_and_destroy(bond_dev, slave_dev); |
| 3498 | else |
| 3499 | bond_release(bond_dev, slave_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3500 | } |
| 3501 | break; |
| 3502 | case NETDEV_CHANGE: |
Jay Vosburgh | 17d0450 | 2009-03-18 18:38:25 -0700 | [diff] [blame] | 3503 | if (bond->params.mode == BOND_MODE_8023AD || bond_is_lb(bond)) { |
| 3504 | struct slave *slave; |
| 3505 | |
| 3506 | slave = bond_get_slave_by_dev(bond, slave_dev); |
| 3507 | if (slave) { |
| 3508 | u16 old_speed = slave->speed; |
| 3509 | u16 old_duplex = slave->duplex; |
| 3510 | |
| 3511 | bond_update_speed_duplex(slave); |
| 3512 | |
| 3513 | if (bond_is_lb(bond)) |
| 3514 | break; |
| 3515 | |
| 3516 | if (old_speed != slave->speed) |
| 3517 | bond_3ad_adapter_speed_changed(slave); |
| 3518 | if (old_duplex != slave->duplex) |
| 3519 | bond_3ad_adapter_duplex_changed(slave); |
| 3520 | } |
| 3521 | } |
| 3522 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3523 | break; |
| 3524 | case NETDEV_DOWN: |
| 3525 | /* |
| 3526 | * ... Or is it this? |
| 3527 | */ |
| 3528 | break; |
| 3529 | case NETDEV_CHANGEMTU: |
| 3530 | /* |
| 3531 | * TODO: Should slaves be allowed to |
| 3532 | * independently alter their MTU? For |
| 3533 | * an active-backup bond, slaves need |
| 3534 | * not be the same type of device, so |
| 3535 | * MTUs may vary. For other modes, |
| 3536 | * slaves arguably should have the |
| 3537 | * same MTUs. To do this, we'd need to |
| 3538 | * take over the slave's change_mtu |
| 3539 | * function for the duration of their |
| 3540 | * servitude. |
| 3541 | */ |
| 3542 | break; |
| 3543 | case NETDEV_CHANGENAME: |
| 3544 | /* |
| 3545 | * TODO: handle changing the primary's name |
| 3546 | */ |
| 3547 | break; |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 3548 | case NETDEV_FEAT_CHANGE: |
| 3549 | bond_compute_features(bond); |
| 3550 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3551 | default: |
| 3552 | break; |
| 3553 | } |
| 3554 | |
| 3555 | return NOTIFY_DONE; |
| 3556 | } |
| 3557 | |
| 3558 | /* |
| 3559 | * bond_netdev_event: handle netdev notifier chain events. |
| 3560 | * |
| 3561 | * This function receives events for the netdev chain. The caller (an |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 3562 | * ioctl handler calling blocking_notifier_call_chain) holds the necessary |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3563 | * locks for us to safely manipulate the slave devices (RTNL lock, |
| 3564 | * dev_probe_lock). |
| 3565 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3566 | static int bond_netdev_event(struct notifier_block *this, |
| 3567 | unsigned long event, void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3568 | { |
| 3569 | struct net_device *event_dev = (struct net_device *)ptr; |
| 3570 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 3571 | if (dev_net(event_dev) != &init_net) |
Eric W. Biederman | e9dc865 | 2007-09-12 13:02:17 +0200 | [diff] [blame] | 3572 | return NOTIFY_DONE; |
| 3573 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 3574 | pr_debug("event_dev: %s, event: %lx\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3575 | (event_dev ? event_dev->name : "None"), |
| 3576 | event); |
| 3577 | |
Jay Vosburgh | 0b680e7 | 2006-09-22 21:54:10 -0700 | [diff] [blame] | 3578 | if (!(event_dev->priv_flags & IFF_BONDING)) |
| 3579 | return NOTIFY_DONE; |
| 3580 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3581 | if (event_dev->flags & IFF_MASTER) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 3582 | pr_debug("IFF_MASTER\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3583 | return bond_master_netdev_event(event, event_dev); |
| 3584 | } |
| 3585 | |
| 3586 | if (event_dev->flags & IFF_SLAVE) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 3587 | pr_debug("IFF_SLAVE\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3588 | return bond_slave_netdev_event(event, event_dev); |
| 3589 | } |
| 3590 | |
| 3591 | return NOTIFY_DONE; |
| 3592 | } |
| 3593 | |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 3594 | /* |
| 3595 | * bond_inetaddr_event: handle inetaddr notifier chain events. |
| 3596 | * |
| 3597 | * We keep track of device IPs primarily to use as source addresses in |
| 3598 | * ARP monitor probes (rather than spewing out broadcasts all the time). |
| 3599 | * |
| 3600 | * We track one IP for the main device (if it has one), plus one per VLAN. |
| 3601 | */ |
| 3602 | static int bond_inetaddr_event(struct notifier_block *this, unsigned long event, void *ptr) |
| 3603 | { |
| 3604 | struct in_ifaddr *ifa = ptr; |
| 3605 | struct net_device *vlan_dev, *event_dev = ifa->ifa_dev->dev; |
Pavel Emelyanov | 0883bec | 2008-05-17 21:10:10 -0700 | [diff] [blame] | 3606 | struct bonding *bond; |
| 3607 | struct vlan_entry *vlan; |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 3608 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 3609 | if (dev_net(ifa->ifa_dev->dev) != &init_net) |
Denis V. Lunev | 6133fb1 | 2008-02-28 20:46:17 -0800 | [diff] [blame] | 3610 | return NOTIFY_DONE; |
| 3611 | |
Pavel Emelyanov | 0883bec | 2008-05-17 21:10:10 -0700 | [diff] [blame] | 3612 | list_for_each_entry(bond, &bond_dev_list, bond_list) { |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 3613 | if (bond->dev == event_dev) { |
| 3614 | switch (event) { |
| 3615 | case NETDEV_UP: |
| 3616 | bond->master_ip = ifa->ifa_local; |
| 3617 | return NOTIFY_OK; |
| 3618 | case NETDEV_DOWN: |
| 3619 | bond->master_ip = bond_glean_dev_ip(bond->dev); |
| 3620 | return NOTIFY_OK; |
| 3621 | default: |
| 3622 | return NOTIFY_DONE; |
| 3623 | } |
| 3624 | } |
| 3625 | |
Pavel Emelyanov | 0883bec | 2008-05-17 21:10:10 -0700 | [diff] [blame] | 3626 | list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { |
Dan Aloni | 5c15bde | 2007-03-02 20:44:51 -0800 | [diff] [blame] | 3627 | vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 3628 | if (vlan_dev == event_dev) { |
| 3629 | switch (event) { |
| 3630 | case NETDEV_UP: |
| 3631 | vlan->vlan_ip = ifa->ifa_local; |
| 3632 | return NOTIFY_OK; |
| 3633 | case NETDEV_DOWN: |
| 3634 | vlan->vlan_ip = |
| 3635 | bond_glean_dev_ip(vlan_dev); |
| 3636 | return NOTIFY_OK; |
| 3637 | default: |
| 3638 | return NOTIFY_DONE; |
| 3639 | } |
| 3640 | } |
| 3641 | } |
| 3642 | } |
| 3643 | return NOTIFY_DONE; |
| 3644 | } |
| 3645 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3646 | static struct notifier_block bond_netdev_notifier = { |
| 3647 | .notifier_call = bond_netdev_event, |
| 3648 | }; |
| 3649 | |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 3650 | static struct notifier_block bond_inetaddr_notifier = { |
| 3651 | .notifier_call = bond_inetaddr_event, |
| 3652 | }; |
| 3653 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3654 | /*-------------------------- Packet type handling ---------------------------*/ |
| 3655 | |
| 3656 | /* register to receive lacpdus on a bond */ |
| 3657 | static void bond_register_lacpdu(struct bonding *bond) |
| 3658 | { |
| 3659 | struct packet_type *pk_type = &(BOND_AD_INFO(bond).ad_pkt_type); |
| 3660 | |
| 3661 | /* initialize packet type */ |
| 3662 | pk_type->type = PKT_TYPE_LACPDU; |
| 3663 | pk_type->dev = bond->dev; |
| 3664 | pk_type->func = bond_3ad_lacpdu_recv; |
| 3665 | |
| 3666 | dev_add_pack(pk_type); |
| 3667 | } |
| 3668 | |
| 3669 | /* unregister to receive lacpdus on a bond */ |
| 3670 | static void bond_unregister_lacpdu(struct bonding *bond) |
| 3671 | { |
| 3672 | dev_remove_pack(&(BOND_AD_INFO(bond).ad_pkt_type)); |
| 3673 | } |
| 3674 | |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 3675 | void bond_register_arp(struct bonding *bond) |
| 3676 | { |
| 3677 | struct packet_type *pt = &bond->arp_mon_pt; |
| 3678 | |
Jay Vosburgh | c4f283b | 2007-02-28 17:03:20 -0800 | [diff] [blame] | 3679 | if (pt->type) |
| 3680 | return; |
| 3681 | |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 3682 | pt->type = htons(ETH_P_ARP); |
Jay Vosburgh | e245cb7 | 2007-02-28 17:03:27 -0800 | [diff] [blame] | 3683 | pt->dev = bond->dev; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 3684 | pt->func = bond_arp_rcv; |
| 3685 | dev_add_pack(pt); |
| 3686 | } |
| 3687 | |
| 3688 | void bond_unregister_arp(struct bonding *bond) |
| 3689 | { |
Jay Vosburgh | c4f283b | 2007-02-28 17:03:20 -0800 | [diff] [blame] | 3690 | struct packet_type *pt = &bond->arp_mon_pt; |
| 3691 | |
| 3692 | dev_remove_pack(pt); |
| 3693 | pt->type = 0; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 3694 | } |
| 3695 | |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 3696 | /*---------------------------- Hashing Policies -----------------------------*/ |
| 3697 | |
| 3698 | /* |
Jay Vosburgh | 6f6652b | 2007-12-06 23:40:34 -0800 | [diff] [blame] | 3699 | * Hash for the output device based upon layer 2 and layer 3 data. If |
| 3700 | * the packet is not IP mimic bond_xmit_hash_policy_l2() |
| 3701 | */ |
| 3702 | static int bond_xmit_hash_policy_l23(struct sk_buff *skb, |
| 3703 | struct net_device *bond_dev, int count) |
| 3704 | { |
| 3705 | struct ethhdr *data = (struct ethhdr *)skb->data; |
| 3706 | struct iphdr *iph = ip_hdr(skb); |
| 3707 | |
Brian Haley | f14c4e4 | 2008-09-02 10:08:08 -0400 | [diff] [blame] | 3708 | if (skb->protocol == htons(ETH_P_IP)) { |
Jay Vosburgh | 6f6652b | 2007-12-06 23:40:34 -0800 | [diff] [blame] | 3709 | return ((ntohl(iph->saddr ^ iph->daddr) & 0xffff) ^ |
| 3710 | (data->h_dest[5] ^ bond_dev->dev_addr[5])) % count; |
| 3711 | } |
| 3712 | |
| 3713 | return (data->h_dest[5] ^ bond_dev->dev_addr[5]) % count; |
| 3714 | } |
| 3715 | |
| 3716 | /* |
Michael Opdenacker | 59c5159 | 2007-05-09 08:57:56 +0200 | [diff] [blame] | 3717 | * Hash for the output device based upon layer 3 and layer 4 data. If |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 3718 | * the packet is a frag or not TCP or UDP, just use layer 3 data. If it is |
| 3719 | * altogether not IP, mimic bond_xmit_hash_policy_l2() |
| 3720 | */ |
| 3721 | static int bond_xmit_hash_policy_l34(struct sk_buff *skb, |
| 3722 | struct net_device *bond_dev, int count) |
| 3723 | { |
| 3724 | struct ethhdr *data = (struct ethhdr *)skb->data; |
Arnaldo Carvalho de Melo | eddc9ec | 2007-04-20 22:47:35 -0700 | [diff] [blame] | 3725 | struct iphdr *iph = ip_hdr(skb); |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 3726 | __be16 *layer4hdr = (__be16 *)((u32 *)iph + iph->ihl); |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 3727 | int layer4_xor = 0; |
| 3728 | |
Brian Haley | f14c4e4 | 2008-09-02 10:08:08 -0400 | [diff] [blame] | 3729 | if (skb->protocol == htons(ETH_P_IP)) { |
| 3730 | if (!(iph->frag_off & htons(IP_MF|IP_OFFSET)) && |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 3731 | (iph->protocol == IPPROTO_TCP || |
| 3732 | iph->protocol == IPPROTO_UDP)) { |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 3733 | layer4_xor = ntohs((*layer4hdr ^ *(layer4hdr + 1))); |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 3734 | } |
| 3735 | return (layer4_xor ^ |
| 3736 | ((ntohl(iph->saddr ^ iph->daddr)) & 0xffff)) % count; |
| 3737 | |
| 3738 | } |
| 3739 | |
| 3740 | return (data->h_dest[5] ^ bond_dev->dev_addr[5]) % count; |
| 3741 | } |
| 3742 | |
| 3743 | /* |
| 3744 | * Hash for the output device based upon layer 2 data |
| 3745 | */ |
| 3746 | static int bond_xmit_hash_policy_l2(struct sk_buff *skb, |
| 3747 | struct net_device *bond_dev, int count) |
| 3748 | { |
| 3749 | struct ethhdr *data = (struct ethhdr *)skb->data; |
| 3750 | |
| 3751 | return (data->h_dest[5] ^ bond_dev->dev_addr[5]) % count; |
| 3752 | } |
| 3753 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3754 | /*-------------------------- Device entry points ----------------------------*/ |
| 3755 | |
| 3756 | static int bond_open(struct net_device *bond_dev) |
| 3757 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3758 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3759 | |
| 3760 | bond->kill_timers = 0; |
| 3761 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 3762 | if (bond_is_lb(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3763 | /* bond_alb_initialize must be called before the timer |
| 3764 | * is started. |
| 3765 | */ |
| 3766 | if (bond_alb_initialize(bond, (bond->params.mode == BOND_MODE_ALB))) { |
| 3767 | /* something went wrong - fail the open operation */ |
| 3768 | return -1; |
| 3769 | } |
| 3770 | |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 3771 | INIT_DELAYED_WORK(&bond->alb_work, bond_alb_monitor); |
| 3772 | queue_delayed_work(bond->wq, &bond->alb_work, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3773 | } |
| 3774 | |
| 3775 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 3776 | INIT_DELAYED_WORK(&bond->mii_work, bond_mii_monitor); |
| 3777 | queue_delayed_work(bond->wq, &bond->mii_work, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3778 | } |
| 3779 | |
| 3780 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 3781 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) |
| 3782 | INIT_DELAYED_WORK(&bond->arp_work, |
| 3783 | bond_activebackup_arp_mon); |
| 3784 | else |
| 3785 | INIT_DELAYED_WORK(&bond->arp_work, |
| 3786 | bond_loadbalance_arp_mon); |
| 3787 | |
| 3788 | queue_delayed_work(bond->wq, &bond->arp_work, 0); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 3789 | if (bond->params.arp_validate) |
| 3790 | bond_register_arp(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3791 | } |
| 3792 | |
| 3793 | if (bond->params.mode == BOND_MODE_8023AD) { |
Adrian Bunk | a40745f | 2007-10-24 18:27:43 +0200 | [diff] [blame] | 3794 | INIT_DELAYED_WORK(&bond->ad_work, bond_3ad_state_machine_handler); |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 3795 | queue_delayed_work(bond->wq, &bond->ad_work, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3796 | /* register to receive LACPDUs */ |
| 3797 | bond_register_lacpdu(bond); |
Jay Vosburgh | fd989c8 | 2008-11-04 17:51:16 -0800 | [diff] [blame] | 3798 | bond_3ad_initiate_agg_selection(bond, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3799 | } |
| 3800 | |
| 3801 | return 0; |
| 3802 | } |
| 3803 | |
| 3804 | static int bond_close(struct net_device *bond_dev) |
| 3805 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3806 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3807 | |
| 3808 | if (bond->params.mode == BOND_MODE_8023AD) { |
| 3809 | /* Unregister the receive of LACPDUs */ |
| 3810 | bond_unregister_lacpdu(bond); |
| 3811 | } |
| 3812 | |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 3813 | if (bond->params.arp_validate) |
| 3814 | bond_unregister_arp(bond); |
| 3815 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3816 | write_lock_bh(&bond->lock); |
| 3817 | |
Jay Vosburgh | b59f9f7 | 2008-06-13 18:12:03 -0700 | [diff] [blame] | 3818 | bond->send_grat_arp = 0; |
Brian Haley | 305d552 | 2008-11-04 17:51:14 -0800 | [diff] [blame] | 3819 | bond->send_unsol_na = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3820 | |
| 3821 | /* signal timers not to re-arm */ |
| 3822 | bond->kill_timers = 1; |
| 3823 | |
| 3824 | write_unlock_bh(&bond->lock); |
| 3825 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3826 | if (bond->params.miimon) { /* link check interval, in milliseconds. */ |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 3827 | cancel_delayed_work(&bond->mii_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3828 | } |
| 3829 | |
| 3830 | if (bond->params.arp_interval) { /* arp interval, in milliseconds. */ |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 3831 | cancel_delayed_work(&bond->arp_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3832 | } |
| 3833 | |
| 3834 | switch (bond->params.mode) { |
| 3835 | case BOND_MODE_8023AD: |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 3836 | cancel_delayed_work(&bond->ad_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3837 | break; |
| 3838 | case BOND_MODE_TLB: |
| 3839 | case BOND_MODE_ALB: |
Jay Vosburgh | 1b76b31 | 2007-10-17 17:37:45 -0700 | [diff] [blame] | 3840 | cancel_delayed_work(&bond->alb_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3841 | break; |
| 3842 | default: |
| 3843 | break; |
| 3844 | } |
| 3845 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3846 | |
Holger Eitzenberger | 5840205 | 2008-12-09 23:07:13 -0800 | [diff] [blame] | 3847 | if (bond_is_lb(bond)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3848 | /* Must be called only after all |
| 3849 | * slaves have been released |
| 3850 | */ |
| 3851 | bond_alb_deinitialize(bond); |
| 3852 | } |
| 3853 | |
| 3854 | return 0; |
| 3855 | } |
| 3856 | |
| 3857 | static struct net_device_stats *bond_get_stats(struct net_device *bond_dev) |
| 3858 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3859 | struct bonding *bond = netdev_priv(bond_dev); |
Stephen Hemminger | eeda3fd | 2008-11-19 21:40:23 -0800 | [diff] [blame] | 3860 | struct net_device_stats *stats = &bond->stats; |
Andy Gospodarek | 2439f9e | 2008-01-29 18:07:46 -0800 | [diff] [blame] | 3861 | struct net_device_stats local_stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3862 | struct slave *slave; |
| 3863 | int i; |
| 3864 | |
Andy Gospodarek | 2439f9e | 2008-01-29 18:07:46 -0800 | [diff] [blame] | 3865 | memset(&local_stats, 0, sizeof(struct net_device_stats)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3866 | |
| 3867 | read_lock_bh(&bond->lock); |
| 3868 | |
| 3869 | bond_for_each_slave(bond, slave, i) { |
Stephen Hemminger | eeda3fd | 2008-11-19 21:40:23 -0800 | [diff] [blame] | 3870 | const struct net_device_stats *sstats = dev_get_stats(slave->dev); |
| 3871 | |
Andy Gospodarek | 2439f9e | 2008-01-29 18:07:46 -0800 | [diff] [blame] | 3872 | local_stats.rx_packets += sstats->rx_packets; |
| 3873 | local_stats.rx_bytes += sstats->rx_bytes; |
| 3874 | local_stats.rx_errors += sstats->rx_errors; |
| 3875 | local_stats.rx_dropped += sstats->rx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3876 | |
Andy Gospodarek | 2439f9e | 2008-01-29 18:07:46 -0800 | [diff] [blame] | 3877 | local_stats.tx_packets += sstats->tx_packets; |
| 3878 | local_stats.tx_bytes += sstats->tx_bytes; |
| 3879 | local_stats.tx_errors += sstats->tx_errors; |
| 3880 | local_stats.tx_dropped += sstats->tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3881 | |
Andy Gospodarek | 2439f9e | 2008-01-29 18:07:46 -0800 | [diff] [blame] | 3882 | local_stats.multicast += sstats->multicast; |
| 3883 | local_stats.collisions += sstats->collisions; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3884 | |
Andy Gospodarek | 2439f9e | 2008-01-29 18:07:46 -0800 | [diff] [blame] | 3885 | local_stats.rx_length_errors += sstats->rx_length_errors; |
| 3886 | local_stats.rx_over_errors += sstats->rx_over_errors; |
| 3887 | local_stats.rx_crc_errors += sstats->rx_crc_errors; |
| 3888 | local_stats.rx_frame_errors += sstats->rx_frame_errors; |
| 3889 | local_stats.rx_fifo_errors += sstats->rx_fifo_errors; |
| 3890 | local_stats.rx_missed_errors += sstats->rx_missed_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3891 | |
Andy Gospodarek | 2439f9e | 2008-01-29 18:07:46 -0800 | [diff] [blame] | 3892 | local_stats.tx_aborted_errors += sstats->tx_aborted_errors; |
| 3893 | local_stats.tx_carrier_errors += sstats->tx_carrier_errors; |
| 3894 | local_stats.tx_fifo_errors += sstats->tx_fifo_errors; |
| 3895 | local_stats.tx_heartbeat_errors += sstats->tx_heartbeat_errors; |
| 3896 | local_stats.tx_window_errors += sstats->tx_window_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3897 | } |
| 3898 | |
Andy Gospodarek | 2439f9e | 2008-01-29 18:07:46 -0800 | [diff] [blame] | 3899 | memcpy(stats, &local_stats, sizeof(struct net_device_stats)); |
| 3900 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3901 | read_unlock_bh(&bond->lock); |
| 3902 | |
| 3903 | return stats; |
| 3904 | } |
| 3905 | |
| 3906 | static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd) |
| 3907 | { |
| 3908 | struct net_device *slave_dev = NULL; |
| 3909 | struct ifbond k_binfo; |
| 3910 | struct ifbond __user *u_binfo = NULL; |
| 3911 | struct ifslave k_sinfo; |
| 3912 | struct ifslave __user *u_sinfo = NULL; |
| 3913 | struct mii_ioctl_data *mii = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3914 | int res = 0; |
| 3915 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 3916 | pr_debug("bond_ioctl: master=%s, cmd=%d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3917 | bond_dev->name, cmd); |
| 3918 | |
| 3919 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3920 | case SIOCGMIIPHY: |
| 3921 | mii = if_mii(ifr); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3922 | if (!mii) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3923 | return -EINVAL; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3924 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3925 | mii->phy_id = 0; |
| 3926 | /* Fall Through */ |
| 3927 | case SIOCGMIIREG: |
| 3928 | /* |
| 3929 | * We do this again just in case we were called by SIOCGMIIREG |
| 3930 | * instead of SIOCGMIIPHY. |
| 3931 | */ |
| 3932 | mii = if_mii(ifr); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3933 | if (!mii) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3934 | return -EINVAL; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3935 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3936 | |
| 3937 | if (mii->reg_num == 1) { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 3938 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3939 | mii->val_out = 0; |
Jay Vosburgh | 6603a6f | 2007-10-17 17:37:50 -0700 | [diff] [blame] | 3940 | read_lock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3941 | read_lock(&bond->curr_slave_lock); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3942 | if (netif_carrier_ok(bond->dev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3943 | mii->val_out = BMSR_LSTATUS; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3944 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3945 | read_unlock(&bond->curr_slave_lock); |
Jay Vosburgh | 6603a6f | 2007-10-17 17:37:50 -0700 | [diff] [blame] | 3946 | read_unlock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3947 | } |
| 3948 | |
| 3949 | return 0; |
| 3950 | case BOND_INFO_QUERY_OLD: |
| 3951 | case SIOCBONDINFOQUERY: |
| 3952 | u_binfo = (struct ifbond __user *)ifr->ifr_data; |
| 3953 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3954 | if (copy_from_user(&k_binfo, u_binfo, sizeof(ifbond))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3955 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3956 | |
| 3957 | res = bond_info_query(bond_dev, &k_binfo); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3958 | if (res == 0 && |
| 3959 | copy_to_user(u_binfo, &k_binfo, sizeof(ifbond))) |
| 3960 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3961 | |
| 3962 | return res; |
| 3963 | case BOND_SLAVE_INFO_QUERY_OLD: |
| 3964 | case SIOCBONDSLAVEINFOQUERY: |
| 3965 | u_sinfo = (struct ifslave __user *)ifr->ifr_data; |
| 3966 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3967 | if (copy_from_user(&k_sinfo, u_sinfo, sizeof(ifslave))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3968 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3969 | |
| 3970 | res = bond_slave_info_query(bond_dev, &k_sinfo); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3971 | if (res == 0 && |
| 3972 | copy_to_user(u_sinfo, &k_sinfo, sizeof(ifslave))) |
| 3973 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3974 | |
| 3975 | return res; |
| 3976 | default: |
| 3977 | /* Go on */ |
| 3978 | break; |
| 3979 | } |
| 3980 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3981 | if (!capable(CAP_NET_ADMIN)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3982 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3983 | |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 3984 | slave_dev = dev_get_by_name(&init_net, ifr->ifr_slave); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3985 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 3986 | pr_debug("slave_dev=%p: \n", slave_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3987 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3988 | if (!slave_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3989 | res = -ENODEV; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 3990 | else { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 3991 | pr_debug("slave_dev->name=%s: \n", slave_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3992 | switch (cmd) { |
| 3993 | case BOND_ENSLAVE_OLD: |
| 3994 | case SIOCBONDENSLAVE: |
| 3995 | res = bond_enslave(bond_dev, slave_dev); |
| 3996 | break; |
| 3997 | case BOND_RELEASE_OLD: |
| 3998 | case SIOCBONDRELEASE: |
| 3999 | res = bond_release(bond_dev, slave_dev); |
| 4000 | break; |
| 4001 | case BOND_SETHWADDR_OLD: |
| 4002 | case SIOCBONDSETHWADDR: |
| 4003 | res = bond_sethwaddr(bond_dev, slave_dev); |
| 4004 | break; |
| 4005 | case BOND_CHANGE_ACTIVE_OLD: |
| 4006 | case SIOCBONDCHANGEACTIVE: |
| 4007 | res = bond_ioctl_change_active(bond_dev, slave_dev); |
| 4008 | break; |
| 4009 | default: |
| 4010 | res = -EOPNOTSUPP; |
| 4011 | } |
| 4012 | |
| 4013 | dev_put(slave_dev); |
| 4014 | } |
| 4015 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4016 | return res; |
| 4017 | } |
| 4018 | |
| 4019 | static void bond_set_multicast_list(struct net_device *bond_dev) |
| 4020 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4021 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4022 | struct dev_mc_list *dmi; |
| 4023 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4024 | /* |
| 4025 | * Do promisc before checking multicast_mode |
| 4026 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4027 | if ((bond_dev->flags & IFF_PROMISC) && !(bond->flags & IFF_PROMISC)) |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 4028 | /* |
| 4029 | * FIXME: Need to handle the error when one of the multi-slaves |
| 4030 | * encounters error. |
| 4031 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4032 | bond_set_promiscuity(bond, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4033 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4034 | |
| 4035 | if (!(bond_dev->flags & IFF_PROMISC) && (bond->flags & IFF_PROMISC)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4036 | bond_set_promiscuity(bond, -1); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4037 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4038 | |
| 4039 | /* set allmulti flag to slaves */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4040 | if ((bond_dev->flags & IFF_ALLMULTI) && !(bond->flags & IFF_ALLMULTI)) |
Wang Chen | 7e1a1ac | 2008-07-14 20:51:36 -0700 | [diff] [blame] | 4041 | /* |
| 4042 | * FIXME: Need to handle the error when one of the multi-slaves |
| 4043 | * encounters error. |
| 4044 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4045 | bond_set_allmulti(bond, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4046 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4047 | |
| 4048 | if (!(bond_dev->flags & IFF_ALLMULTI) && (bond->flags & IFF_ALLMULTI)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4049 | bond_set_allmulti(bond, -1); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4050 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4051 | |
Jay Vosburgh | 80ee5ad | 2008-01-29 18:07:44 -0800 | [diff] [blame] | 4052 | read_lock(&bond->lock); |
| 4053 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4054 | bond->flags = bond_dev->flags; |
| 4055 | |
| 4056 | /* looking for addresses to add to slaves' mc list */ |
| 4057 | for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4058 | if (!bond_mc_list_find_dmi(dmi, bond->mc_list)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4059 | bond_mc_add(bond, dmi->dmi_addr, dmi->dmi_addrlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4060 | } |
| 4061 | |
| 4062 | /* looking for addresses to delete from slaves' list */ |
| 4063 | for (dmi = bond->mc_list; dmi; dmi = dmi->next) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4064 | if (!bond_mc_list_find_dmi(dmi, bond_dev->mc_list)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4065 | bond_mc_delete(bond, dmi->dmi_addr, dmi->dmi_addrlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4066 | } |
| 4067 | |
| 4068 | /* save master's multicast list */ |
| 4069 | bond_mc_list_destroy(bond); |
| 4070 | bond_mc_list_copy(bond_dev->mc_list, bond, GFP_ATOMIC); |
| 4071 | |
Jay Vosburgh | 80ee5ad | 2008-01-29 18:07:44 -0800 | [diff] [blame] | 4072 | read_unlock(&bond->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4073 | } |
| 4074 | |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4075 | static int bond_neigh_setup(struct net_device *dev, struct neigh_parms *parms) |
| 4076 | { |
| 4077 | struct bonding *bond = netdev_priv(dev); |
| 4078 | struct slave *slave = bond->first_slave; |
| 4079 | |
| 4080 | if (slave) { |
| 4081 | const struct net_device_ops *slave_ops |
| 4082 | = slave->dev->netdev_ops; |
| 4083 | if (slave_ops->ndo_neigh_setup) |
Patrick McHardy | 72e2240 | 2009-03-05 01:57:44 -0800 | [diff] [blame] | 4084 | return slave_ops->ndo_neigh_setup(slave->dev, parms); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4085 | } |
| 4086 | return 0; |
| 4087 | } |
| 4088 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4089 | /* |
| 4090 | * Change the MTU of all of a master's slaves to match the master |
| 4091 | */ |
| 4092 | static int bond_change_mtu(struct net_device *bond_dev, int new_mtu) |
| 4093 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4094 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4095 | struct slave *slave, *stop_at; |
| 4096 | int res = 0; |
| 4097 | int i; |
| 4098 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 4099 | pr_debug("bond=%p, name=%s, new_mtu=%d\n", bond, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4100 | (bond_dev ? bond_dev->name : "None"), new_mtu); |
| 4101 | |
| 4102 | /* Can't hold bond->lock with bh disabled here since |
| 4103 | * some base drivers panic. On the other hand we can't |
| 4104 | * hold bond->lock without bh disabled because we'll |
| 4105 | * deadlock. The only solution is to rely on the fact |
| 4106 | * that we're under rtnl_lock here, and the slaves |
| 4107 | * list won't change. This doesn't solve the problem |
| 4108 | * of setting the slave's MTU while it is |
| 4109 | * transmitting, but the assumption is that the base |
| 4110 | * driver can handle that. |
| 4111 | * |
| 4112 | * TODO: figure out a way to safely iterate the slaves |
| 4113 | * list, but without holding a lock around the actual |
| 4114 | * call to the base driver. |
| 4115 | */ |
| 4116 | |
| 4117 | bond_for_each_slave(bond, slave, i) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 4118 | pr_debug("s %p s->p %p c_m %p\n", slave, |
Stephen Hemminger | 53a3294 | 2009-01-06 10:41:56 -0800 | [diff] [blame] | 4119 | slave->prev, slave->dev->netdev_ops->ndo_change_mtu); |
Mitch Williams | e944ef7 | 2005-11-09 10:36:50 -0800 | [diff] [blame] | 4120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4121 | res = dev_set_mtu(slave->dev, new_mtu); |
| 4122 | |
| 4123 | if (res) { |
| 4124 | /* If we failed to set the slave's mtu to the new value |
| 4125 | * we must abort the operation even in ACTIVE_BACKUP |
| 4126 | * mode, because if we allow the backup slaves to have |
| 4127 | * different mtu values than the active slave we'll |
| 4128 | * need to change their mtu when doing a failover. That |
| 4129 | * means changing their mtu from timer context, which |
| 4130 | * is probably not a good idea. |
| 4131 | */ |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 4132 | pr_debug("err %d %s\n", res, slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4133 | goto unwind; |
| 4134 | } |
| 4135 | } |
| 4136 | |
| 4137 | bond_dev->mtu = new_mtu; |
| 4138 | |
| 4139 | return 0; |
| 4140 | |
| 4141 | unwind: |
| 4142 | /* unwind from head to the slave that failed */ |
| 4143 | stop_at = slave; |
| 4144 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { |
| 4145 | int tmp_res; |
| 4146 | |
| 4147 | tmp_res = dev_set_mtu(slave->dev, bond_dev->mtu); |
| 4148 | if (tmp_res) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 4149 | pr_debug("unwind err %d dev %s\n", tmp_res, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4150 | slave->dev->name); |
| 4151 | } |
| 4152 | } |
| 4153 | |
| 4154 | return res; |
| 4155 | } |
| 4156 | |
| 4157 | /* |
| 4158 | * Change HW address |
| 4159 | * |
| 4160 | * Note that many devices must be down to change the HW address, and |
| 4161 | * downing the master releases all slaves. We can make bonds full of |
| 4162 | * bonding devices to test this, however. |
| 4163 | */ |
| 4164 | static int bond_set_mac_address(struct net_device *bond_dev, void *addr) |
| 4165 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4166 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4167 | struct sockaddr *sa = addr, tmp_sa; |
| 4168 | struct slave *slave, *stop_at; |
| 4169 | int res = 0; |
| 4170 | int i; |
| 4171 | |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4172 | if (bond->params.mode == BOND_MODE_ALB) |
| 4173 | return bond_alb_set_mac_address(bond_dev, addr); |
| 4174 | |
| 4175 | |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 4176 | pr_debug("bond=%p, name=%s\n", bond, (bond_dev ? bond_dev->name : "None")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4177 | |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 4178 | /* |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 4179 | * If fail_over_mac is set to active, do nothing and return |
| 4180 | * success. Returning an error causes ifenslave to fail. |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 4181 | */ |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 4182 | if (bond->params.fail_over_mac == BOND_FOM_ACTIVE) |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 4183 | return 0; |
Moni Shoua | 2ab8285 | 2007-10-09 19:43:39 -0700 | [diff] [blame] | 4184 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4185 | if (!is_valid_ether_addr(sa->sa_data)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4186 | return -EADDRNOTAVAIL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4187 | |
| 4188 | /* Can't hold bond->lock with bh disabled here since |
| 4189 | * some base drivers panic. On the other hand we can't |
| 4190 | * hold bond->lock without bh disabled because we'll |
| 4191 | * deadlock. The only solution is to rely on the fact |
| 4192 | * that we're under rtnl_lock here, and the slaves |
| 4193 | * list won't change. This doesn't solve the problem |
| 4194 | * of setting the slave's hw address while it is |
| 4195 | * transmitting, but the assumption is that the base |
| 4196 | * driver can handle that. |
| 4197 | * |
| 4198 | * TODO: figure out a way to safely iterate the slaves |
| 4199 | * list, but without holding a lock around the actual |
| 4200 | * call to the base driver. |
| 4201 | */ |
| 4202 | |
| 4203 | bond_for_each_slave(bond, slave, i) { |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4204 | const struct net_device_ops *slave_ops = slave->dev->netdev_ops; |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 4205 | pr_debug("slave %p %s\n", slave, slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4206 | |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4207 | if (slave_ops->ndo_set_mac_address == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4208 | res = -EOPNOTSUPP; |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 4209 | pr_debug("EOPNOTSUPP %s\n", slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4210 | goto unwind; |
| 4211 | } |
| 4212 | |
| 4213 | res = dev_set_mac_address(slave->dev, addr); |
| 4214 | if (res) { |
| 4215 | /* TODO: consider downing the slave |
| 4216 | * and retry ? |
| 4217 | * User should expect communications |
| 4218 | * breakage anyway until ARP finish |
| 4219 | * updating, so... |
| 4220 | */ |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 4221 | pr_debug("err %d %s\n", res, slave->dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4222 | goto unwind; |
| 4223 | } |
| 4224 | } |
| 4225 | |
| 4226 | /* success */ |
| 4227 | memcpy(bond_dev->dev_addr, sa->sa_data, bond_dev->addr_len); |
| 4228 | return 0; |
| 4229 | |
| 4230 | unwind: |
| 4231 | memcpy(tmp_sa.sa_data, bond_dev->dev_addr, bond_dev->addr_len); |
| 4232 | tmp_sa.sa_family = bond_dev->type; |
| 4233 | |
| 4234 | /* unwind from head to the slave that failed */ |
| 4235 | stop_at = slave; |
| 4236 | bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) { |
| 4237 | int tmp_res; |
| 4238 | |
| 4239 | tmp_res = dev_set_mac_address(slave->dev, &tmp_sa); |
| 4240 | if (tmp_res) { |
Holger Eitzenberger | 5a03cdb | 2008-12-09 23:09:22 -0800 | [diff] [blame] | 4241 | pr_debug("unwind err %d dev %s\n", tmp_res, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4242 | slave->dev->name); |
| 4243 | } |
| 4244 | } |
| 4245 | |
| 4246 | return res; |
| 4247 | } |
| 4248 | |
| 4249 | static int bond_xmit_roundrobin(struct sk_buff *skb, struct net_device *bond_dev) |
| 4250 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4251 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4252 | struct slave *slave, *start_at; |
Jay Vosburgh | cf5f904 | 2007-10-17 17:37:47 -0700 | [diff] [blame] | 4253 | int i, slave_no, res = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4254 | |
| 4255 | read_lock(&bond->lock); |
| 4256 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4257 | if (!BOND_IS_OK(bond)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4258 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4259 | |
Jay Vosburgh | cf5f904 | 2007-10-17 17:37:47 -0700 | [diff] [blame] | 4260 | /* |
| 4261 | * Concurrent TX may collide on rr_tx_counter; we accept that |
| 4262 | * as being rare enough not to justify using an atomic op here |
| 4263 | */ |
| 4264 | slave_no = bond->rr_tx_counter++ % bond->slave_cnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4265 | |
Jay Vosburgh | cf5f904 | 2007-10-17 17:37:47 -0700 | [diff] [blame] | 4266 | bond_for_each_slave(bond, slave, i) { |
| 4267 | slave_no--; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4268 | if (slave_no < 0) |
Jay Vosburgh | cf5f904 | 2007-10-17 17:37:47 -0700 | [diff] [blame] | 4269 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4270 | } |
| 4271 | |
Jay Vosburgh | cf5f904 | 2007-10-17 17:37:47 -0700 | [diff] [blame] | 4272 | start_at = slave; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4273 | bond_for_each_slave_from(bond, slave, i, start_at) { |
| 4274 | if (IS_UP(slave->dev) && |
| 4275 | (slave->link == BOND_LINK_UP) && |
| 4276 | (slave->state == BOND_STATE_ACTIVE)) { |
| 4277 | res = bond_dev_queue_xmit(bond, skb, slave->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4278 | break; |
| 4279 | } |
| 4280 | } |
| 4281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4282 | out: |
| 4283 | if (res) { |
| 4284 | /* no suitable interface, frame not sent */ |
| 4285 | dev_kfree_skb(skb); |
| 4286 | } |
| 4287 | read_unlock(&bond->lock); |
| 4288 | return 0; |
| 4289 | } |
| 4290 | |
John W. Linville | 075897c | 2005-09-28 17:50:53 -0400 | [diff] [blame] | 4291 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4292 | /* |
| 4293 | * in active-backup mode, we know that bond->curr_active_slave is always valid if |
| 4294 | * the bond has a usable interface. |
| 4295 | */ |
| 4296 | static int bond_xmit_activebackup(struct sk_buff *skb, struct net_device *bond_dev) |
| 4297 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4298 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4299 | int res = 1; |
| 4300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4301 | read_lock(&bond->lock); |
| 4302 | read_lock(&bond->curr_slave_lock); |
| 4303 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4304 | if (!BOND_IS_OK(bond)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4305 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4306 | |
John W. Linville | 075897c | 2005-09-28 17:50:53 -0400 | [diff] [blame] | 4307 | if (!bond->curr_active_slave) |
| 4308 | goto out; |
| 4309 | |
John W. Linville | 075897c | 2005-09-28 17:50:53 -0400 | [diff] [blame] | 4310 | res = bond_dev_queue_xmit(bond, skb, bond->curr_active_slave->dev); |
| 4311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4312 | out: |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4313 | if (res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4314 | /* no suitable interface, frame not sent */ |
| 4315 | dev_kfree_skb(skb); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4316 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4317 | read_unlock(&bond->curr_slave_lock); |
| 4318 | read_unlock(&bond->lock); |
| 4319 | return 0; |
| 4320 | } |
| 4321 | |
| 4322 | /* |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 4323 | * In bond_xmit_xor() , we determine the output device by using a pre- |
| 4324 | * determined xmit_hash_policy(), If the selected device is not enabled, |
| 4325 | * find the next active slave. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4326 | */ |
| 4327 | static int bond_xmit_xor(struct sk_buff *skb, struct net_device *bond_dev) |
| 4328 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4329 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4330 | struct slave *slave, *start_at; |
| 4331 | int slave_no; |
| 4332 | int i; |
| 4333 | int res = 1; |
| 4334 | |
| 4335 | read_lock(&bond->lock); |
| 4336 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4337 | if (!BOND_IS_OK(bond)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4338 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4339 | |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 4340 | slave_no = bond->xmit_hash_policy(skb, bond_dev, bond->slave_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4341 | |
| 4342 | bond_for_each_slave(bond, slave, i) { |
| 4343 | slave_no--; |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4344 | if (slave_no < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4345 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4346 | } |
| 4347 | |
| 4348 | start_at = slave; |
| 4349 | |
| 4350 | bond_for_each_slave_from(bond, slave, i, start_at) { |
| 4351 | if (IS_UP(slave->dev) && |
| 4352 | (slave->link == BOND_LINK_UP) && |
| 4353 | (slave->state == BOND_STATE_ACTIVE)) { |
| 4354 | res = bond_dev_queue_xmit(bond, skb, slave->dev); |
| 4355 | break; |
| 4356 | } |
| 4357 | } |
| 4358 | |
| 4359 | out: |
| 4360 | if (res) { |
| 4361 | /* no suitable interface, frame not sent */ |
| 4362 | dev_kfree_skb(skb); |
| 4363 | } |
| 4364 | read_unlock(&bond->lock); |
| 4365 | return 0; |
| 4366 | } |
| 4367 | |
| 4368 | /* |
| 4369 | * in broadcast mode, we send everything to all usable interfaces. |
| 4370 | */ |
| 4371 | static int bond_xmit_broadcast(struct sk_buff *skb, struct net_device *bond_dev) |
| 4372 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4373 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4374 | struct slave *slave, *start_at; |
| 4375 | struct net_device *tx_dev = NULL; |
| 4376 | int i; |
| 4377 | int res = 1; |
| 4378 | |
| 4379 | read_lock(&bond->lock); |
| 4380 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4381 | if (!BOND_IS_OK(bond)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4382 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4383 | |
| 4384 | read_lock(&bond->curr_slave_lock); |
| 4385 | start_at = bond->curr_active_slave; |
| 4386 | read_unlock(&bond->curr_slave_lock); |
| 4387 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4388 | if (!start_at) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4389 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4390 | |
| 4391 | bond_for_each_slave_from(bond, slave, i, start_at) { |
| 4392 | if (IS_UP(slave->dev) && |
| 4393 | (slave->link == BOND_LINK_UP) && |
| 4394 | (slave->state == BOND_STATE_ACTIVE)) { |
| 4395 | if (tx_dev) { |
| 4396 | struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); |
| 4397 | if (!skb2) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4398 | pr_err(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 4399 | ": %s: Error: bond_xmit_broadcast(): " |
| 4400 | "skb_clone() failed\n", |
| 4401 | bond_dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4402 | continue; |
| 4403 | } |
| 4404 | |
| 4405 | res = bond_dev_queue_xmit(bond, skb2, tx_dev); |
| 4406 | if (res) { |
| 4407 | dev_kfree_skb(skb2); |
| 4408 | continue; |
| 4409 | } |
| 4410 | } |
| 4411 | tx_dev = slave->dev; |
| 4412 | } |
| 4413 | } |
| 4414 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4415 | if (tx_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4416 | res = bond_dev_queue_xmit(bond, skb, tx_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4417 | |
| 4418 | out: |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4419 | if (res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4420 | /* no suitable interface, frame not sent */ |
| 4421 | dev_kfree_skb(skb); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4423 | /* frame sent to all suitable interfaces */ |
| 4424 | read_unlock(&bond->lock); |
| 4425 | return 0; |
| 4426 | } |
| 4427 | |
| 4428 | /*------------------------- Device initialization ---------------------------*/ |
| 4429 | |
Jay Vosburgh | 6f6652b | 2007-12-06 23:40:34 -0800 | [diff] [blame] | 4430 | static void bond_set_xmit_hash_policy(struct bonding *bond) |
| 4431 | { |
| 4432 | switch (bond->params.xmit_policy) { |
| 4433 | case BOND_XMIT_POLICY_LAYER23: |
| 4434 | bond->xmit_hash_policy = bond_xmit_hash_policy_l23; |
| 4435 | break; |
| 4436 | case BOND_XMIT_POLICY_LAYER34: |
| 4437 | bond->xmit_hash_policy = bond_xmit_hash_policy_l34; |
| 4438 | break; |
| 4439 | case BOND_XMIT_POLICY_LAYER2: |
| 4440 | default: |
| 4441 | bond->xmit_hash_policy = bond_xmit_hash_policy_l2; |
| 4442 | break; |
| 4443 | } |
| 4444 | } |
| 4445 | |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4446 | static int bond_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 4447 | { |
| 4448 | const struct bonding *bond = netdev_priv(dev); |
| 4449 | |
| 4450 | switch (bond->params.mode) { |
| 4451 | case BOND_MODE_ROUNDROBIN: |
| 4452 | return bond_xmit_roundrobin(skb, dev); |
| 4453 | case BOND_MODE_ACTIVEBACKUP: |
| 4454 | return bond_xmit_activebackup(skb, dev); |
| 4455 | case BOND_MODE_XOR: |
| 4456 | return bond_xmit_xor(skb, dev); |
| 4457 | case BOND_MODE_BROADCAST: |
| 4458 | return bond_xmit_broadcast(skb, dev); |
| 4459 | case BOND_MODE_8023AD: |
| 4460 | return bond_3ad_xmit_xor(skb, dev); |
| 4461 | case BOND_MODE_ALB: |
| 4462 | case BOND_MODE_TLB: |
| 4463 | return bond_alb_xmit(skb, dev); |
| 4464 | default: |
| 4465 | /* Should never happen, mode already checked */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4466 | pr_err(DRV_NAME ": %s: Error: Unknown bonding mode %d\n", |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4467 | dev->name, bond->params.mode); |
| 4468 | WARN_ON_ONCE(1); |
| 4469 | dev_kfree_skb(skb); |
| 4470 | return NETDEV_TX_OK; |
| 4471 | } |
| 4472 | } |
| 4473 | |
| 4474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4475 | /* |
| 4476 | * set bond mode specific net device operations |
| 4477 | */ |
Mitch Williams | a77b532 | 2005-11-09 10:35:51 -0800 | [diff] [blame] | 4478 | void bond_set_mode_ops(struct bonding *bond, int mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4479 | { |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 4480 | struct net_device *bond_dev = bond->dev; |
| 4481 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4482 | switch (mode) { |
| 4483 | case BOND_MODE_ROUNDROBIN: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4484 | break; |
| 4485 | case BOND_MODE_ACTIVEBACKUP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4486 | break; |
| 4487 | case BOND_MODE_XOR: |
Jay Vosburgh | 6f6652b | 2007-12-06 23:40:34 -0800 | [diff] [blame] | 4488 | bond_set_xmit_hash_policy(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4489 | break; |
| 4490 | case BOND_MODE_BROADCAST: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4491 | break; |
| 4492 | case BOND_MODE_8023AD: |
Jay Vosburgh | 8f903c7 | 2006-02-21 16:36:44 -0800 | [diff] [blame] | 4493 | bond_set_master_3ad_flags(bond); |
Jay Vosburgh | 6f6652b | 2007-12-06 23:40:34 -0800 | [diff] [blame] | 4494 | bond_set_xmit_hash_policy(bond); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4495 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4496 | case BOND_MODE_ALB: |
Jay Vosburgh | 8f903c7 | 2006-02-21 16:36:44 -0800 | [diff] [blame] | 4497 | bond_set_master_alb_flags(bond); |
| 4498 | /* FALLTHRU */ |
| 4499 | case BOND_MODE_TLB: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4500 | break; |
| 4501 | default: |
| 4502 | /* Should never happen, mode already checked */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4503 | pr_err(DRV_NAME |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 4504 | ": %s: Error: Unknown bonding mode %d\n", |
| 4505 | bond_dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4506 | mode); |
| 4507 | break; |
| 4508 | } |
| 4509 | } |
| 4510 | |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 4511 | static void bond_ethtool_get_drvinfo(struct net_device *bond_dev, |
| 4512 | struct ethtool_drvinfo *drvinfo) |
| 4513 | { |
| 4514 | strncpy(drvinfo->driver, DRV_NAME, 32); |
| 4515 | strncpy(drvinfo->version, DRV_VERSION, 32); |
| 4516 | snprintf(drvinfo->fw_version, 32, "%d", BOND_ABI_VERSION); |
| 4517 | } |
| 4518 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 4519 | static const struct ethtool_ops bond_ethtool_ops = { |
Jay Vosburgh | 217df67 | 2005-09-26 16:11:50 -0700 | [diff] [blame] | 4520 | .get_drvinfo = bond_ethtool_get_drvinfo, |
Stephen Hemminger | fa53eba | 2008-09-13 21:17:09 -0400 | [diff] [blame] | 4521 | .get_link = ethtool_op_get_link, |
| 4522 | .get_tx_csum = ethtool_op_get_tx_csum, |
| 4523 | .get_sg = ethtool_op_get_sg, |
| 4524 | .get_tso = ethtool_op_get_tso, |
| 4525 | .get_ufo = ethtool_op_get_ufo, |
| 4526 | .get_flags = ethtool_op_get_flags, |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 4527 | }; |
| 4528 | |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4529 | static const struct net_device_ops bond_netdev_ops = { |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4530 | .ndo_init = bond_init, |
Stephen Hemminger | 9e71626 | 2009-06-12 19:02:47 +0000 | [diff] [blame] | 4531 | .ndo_uninit = bond_uninit, |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4532 | .ndo_open = bond_open, |
| 4533 | .ndo_stop = bond_close, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4534 | .ndo_start_xmit = bond_start_xmit, |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4535 | .ndo_get_stats = bond_get_stats, |
| 4536 | .ndo_do_ioctl = bond_do_ioctl, |
| 4537 | .ndo_set_multicast_list = bond_set_multicast_list, |
| 4538 | .ndo_change_mtu = bond_change_mtu, |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4539 | .ndo_set_mac_address = bond_set_mac_address, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4540 | .ndo_neigh_setup = bond_neigh_setup, |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4541 | .ndo_vlan_rx_register = bond_vlan_rx_register, |
| 4542 | .ndo_vlan_rx_add_vid = bond_vlan_rx_add_vid, |
| 4543 | .ndo_vlan_rx_kill_vid = bond_vlan_rx_kill_vid, |
| 4544 | }; |
| 4545 | |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4546 | static void bond_setup(struct net_device *bond_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4547 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4548 | struct bonding *bond = netdev_priv(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4549 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4550 | /* initialize rwlocks */ |
| 4551 | rwlock_init(&bond->lock); |
| 4552 | rwlock_init(&bond->curr_slave_lock); |
| 4553 | |
Stephen Hemminger | d2991f7 | 2009-06-12 19:02:44 +0000 | [diff] [blame] | 4554 | bond->params = bonding_defaults; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4555 | |
| 4556 | /* Initialize pointers */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4557 | bond->dev = bond_dev; |
| 4558 | INIT_LIST_HEAD(&bond->vlan_list); |
| 4559 | |
| 4560 | /* Initialize the device entry points */ |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4561 | ether_setup(bond_dev); |
Stephen Hemminger | eb7cc59 | 2008-11-19 21:56:05 -0800 | [diff] [blame] | 4562 | bond_dev->netdev_ops = &bond_netdev_ops; |
Arthur Kepner | 8531c5f | 2005-08-23 01:34:53 -0400 | [diff] [blame] | 4563 | bond_dev->ethtool_ops = &bond_ethtool_ops; |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 4564 | bond_set_mode_ops(bond, bond->params.mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4565 | |
Stephen Hemminger | 9e71626 | 2009-06-12 19:02:47 +0000 | [diff] [blame] | 4566 | bond_dev->destructor = free_netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4567 | |
| 4568 | /* Initialize the device options */ |
| 4569 | bond_dev->tx_queue_len = 0; |
| 4570 | bond_dev->flags |= IFF_MASTER|IFF_MULTICAST; |
Jay Vosburgh | 0b680e7 | 2006-09-22 21:54:10 -0700 | [diff] [blame] | 4571 | bond_dev->priv_flags |= IFF_BONDING; |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 4572 | bond_dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; |
| 4573 | |
Jay Vosburgh | 6cf3f41 | 2008-11-03 18:16:50 -0800 | [diff] [blame] | 4574 | if (bond->params.arp_interval) |
| 4575 | bond_dev->priv_flags |= IFF_MASTER_ARPMON; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4576 | |
| 4577 | /* At first, we block adding VLANs. That's the only way to |
| 4578 | * prevent problems that occur when adding VLANs over an |
| 4579 | * empty bond. The block will be removed once non-challenged |
| 4580 | * slaves are enslaved. |
| 4581 | */ |
| 4582 | bond_dev->features |= NETIF_F_VLAN_CHALLENGED; |
| 4583 | |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 4584 | /* don't acquire bond device's netif_tx_lock when |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4585 | * transmitting */ |
| 4586 | bond_dev->features |= NETIF_F_LLTX; |
| 4587 | |
| 4588 | /* By default, we declare the bond to be fully |
| 4589 | * VLAN hardware accelerated capable. Special |
| 4590 | * care is taken in the various xmit functions |
| 4591 | * when there are slaves that are not hw accel |
| 4592 | * capable |
| 4593 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4594 | bond_dev->features |= (NETIF_F_HW_VLAN_TX | |
| 4595 | NETIF_F_HW_VLAN_RX | |
| 4596 | NETIF_F_HW_VLAN_FILTER); |
| 4597 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4598 | } |
| 4599 | |
Jay Vosburgh | fdaea7a | 2007-12-06 23:40:35 -0800 | [diff] [blame] | 4600 | static void bond_work_cancel_all(struct bonding *bond) |
| 4601 | { |
| 4602 | write_lock_bh(&bond->lock); |
| 4603 | bond->kill_timers = 1; |
| 4604 | write_unlock_bh(&bond->lock); |
| 4605 | |
| 4606 | if (bond->params.miimon && delayed_work_pending(&bond->mii_work)) |
| 4607 | cancel_delayed_work(&bond->mii_work); |
| 4608 | |
| 4609 | if (bond->params.arp_interval && delayed_work_pending(&bond->arp_work)) |
| 4610 | cancel_delayed_work(&bond->arp_work); |
| 4611 | |
| 4612 | if (bond->params.mode == BOND_MODE_ALB && |
| 4613 | delayed_work_pending(&bond->alb_work)) |
| 4614 | cancel_delayed_work(&bond->alb_work); |
| 4615 | |
| 4616 | if (bond->params.mode == BOND_MODE_8023AD && |
| 4617 | delayed_work_pending(&bond->ad_work)) |
| 4618 | cancel_delayed_work(&bond->ad_work); |
| 4619 | } |
| 4620 | |
Jay Vosburgh | a434e43 | 2008-10-30 17:41:15 -0700 | [diff] [blame] | 4621 | /* De-initialize device specific data. |
| 4622 | * Caller must hold rtnl_lock. |
| 4623 | */ |
| 4624 | static void bond_deinit(struct net_device *bond_dev) |
| 4625 | { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4626 | struct bonding *bond = netdev_priv(bond_dev); |
Jay Vosburgh | a434e43 | 2008-10-30 17:41:15 -0700 | [diff] [blame] | 4627 | |
| 4628 | list_del(&bond->bond_list); |
| 4629 | |
| 4630 | bond_work_cancel_all(bond); |
| 4631 | |
Jay Vosburgh | a434e43 | 2008-10-30 17:41:15 -0700 | [diff] [blame] | 4632 | bond_remove_proc_entry(bond); |
Jay Vosburgh | a434e43 | 2008-10-30 17:41:15 -0700 | [diff] [blame] | 4633 | } |
| 4634 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4635 | /* Unregister and free all bond devices. |
| 4636 | * Caller must hold rtnl_lock. |
| 4637 | */ |
| 4638 | static void bond_free_all(void) |
| 4639 | { |
| 4640 | struct bonding *bond, *nxt; |
| 4641 | |
| 4642 | list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) { |
| 4643 | struct net_device *bond_dev = bond->dev; |
| 4644 | |
Jay Vosburgh | fdaea7a | 2007-12-06 23:40:35 -0800 | [diff] [blame] | 4645 | bond_work_cancel_all(bond); |
jamal | 70298705 | 2006-09-22 21:54:37 -0700 | [diff] [blame] | 4646 | /* Release the bonded slaves */ |
| 4647 | bond_release_all(bond_dev); |
Stephen Hemminger | 9e71626 | 2009-06-12 19:02:47 +0000 | [diff] [blame] | 4648 | unregister_netdevice(bond_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4649 | } |
| 4650 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4651 | bond_destroy_proc_dir(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4652 | } |
| 4653 | |
| 4654 | /*------------------------- Module initialization ---------------------------*/ |
| 4655 | |
| 4656 | /* |
| 4657 | * Convert string input module parms. Accept either the |
Jay Vosburgh | ece95f7 | 2008-01-17 16:25:01 -0800 | [diff] [blame] | 4658 | * number of the mode or its string name. A bit complicated because |
| 4659 | * some mode names are substrings of other names, and calls from sysfs |
| 4660 | * may have whitespace in the name (trailing newlines, for example). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4661 | */ |
Holger Eitzenberger | 325dcf7 | 2008-12-09 23:10:17 -0800 | [diff] [blame] | 4662 | int bond_parse_parm(const char *buf, const struct bond_parm_tbl *tbl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4663 | { |
Hannes Eder | 54b8732 | 2009-02-14 11:15:49 +0000 | [diff] [blame] | 4664 | int modeint = -1, i, rv; |
Jay Vosburgh | a42e534 | 2008-01-29 18:07:43 -0800 | [diff] [blame] | 4665 | char *p, modestr[BOND_MAX_MODENAME_LEN + 1] = { 0, }; |
Jay Vosburgh | ece95f7 | 2008-01-17 16:25:01 -0800 | [diff] [blame] | 4666 | |
Jay Vosburgh | a42e534 | 2008-01-29 18:07:43 -0800 | [diff] [blame] | 4667 | for (p = (char *)buf; *p; p++) |
| 4668 | if (!(isdigit(*p) || isspace(*p))) |
| 4669 | break; |
| 4670 | |
| 4671 | if (*p) |
Jay Vosburgh | ece95f7 | 2008-01-17 16:25:01 -0800 | [diff] [blame] | 4672 | rv = sscanf(buf, "%20s", modestr); |
Jay Vosburgh | a42e534 | 2008-01-29 18:07:43 -0800 | [diff] [blame] | 4673 | else |
Hannes Eder | 54b8732 | 2009-02-14 11:15:49 +0000 | [diff] [blame] | 4674 | rv = sscanf(buf, "%d", &modeint); |
Jay Vosburgh | a42e534 | 2008-01-29 18:07:43 -0800 | [diff] [blame] | 4675 | |
| 4676 | if (!rv) |
| 4677 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4678 | |
| 4679 | for (i = 0; tbl[i].modename; i++) { |
Hannes Eder | 54b8732 | 2009-02-14 11:15:49 +0000 | [diff] [blame] | 4680 | if (modeint == tbl[i].mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4681 | return tbl[i].mode; |
Jay Vosburgh | ece95f7 | 2008-01-17 16:25:01 -0800 | [diff] [blame] | 4682 | if (strcmp(modestr, tbl[i].modename) == 0) |
| 4683 | return tbl[i].mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4684 | } |
| 4685 | |
| 4686 | return -1; |
| 4687 | } |
| 4688 | |
| 4689 | static int bond_check_params(struct bond_params *params) |
| 4690 | { |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 4691 | int arp_validate_value, fail_over_mac_value; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4692 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4693 | /* |
| 4694 | * Convert string parameters. |
| 4695 | */ |
| 4696 | if (mode) { |
| 4697 | bond_mode = bond_parse_parm(mode, bond_mode_tbl); |
| 4698 | if (bond_mode == -1) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4699 | pr_err(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4700 | ": Error: Invalid bonding mode \"%s\"\n", |
| 4701 | mode == NULL ? "NULL" : mode); |
| 4702 | return -EINVAL; |
| 4703 | } |
| 4704 | } |
| 4705 | |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 4706 | if (xmit_hash_policy) { |
| 4707 | if ((bond_mode != BOND_MODE_XOR) && |
| 4708 | (bond_mode != BOND_MODE_8023AD)) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4709 | pr_info(DRV_NAME |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 4710 | ": xor_mode param is irrelevant in mode %s\n", |
| 4711 | bond_mode_name(bond_mode)); |
| 4712 | } else { |
| 4713 | xmit_hashtype = bond_parse_parm(xmit_hash_policy, |
| 4714 | xmit_hashtype_tbl); |
| 4715 | if (xmit_hashtype == -1) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4716 | pr_err(DRV_NAME |
| 4717 | ": Error: Invalid xmit_hash_policy \"%s\"\n", |
| 4718 | xmit_hash_policy == NULL ? "NULL" : |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 4719 | xmit_hash_policy); |
| 4720 | return -EINVAL; |
| 4721 | } |
| 4722 | } |
| 4723 | } |
| 4724 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4725 | if (lacp_rate) { |
| 4726 | if (bond_mode != BOND_MODE_8023AD) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4727 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4728 | ": lacp_rate param is irrelevant in mode %s\n", |
| 4729 | bond_mode_name(bond_mode)); |
| 4730 | } else { |
| 4731 | lacp_fast = bond_parse_parm(lacp_rate, bond_lacp_tbl); |
| 4732 | if (lacp_fast == -1) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4733 | pr_err(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4734 | ": Error: Invalid lacp rate \"%s\"\n", |
| 4735 | lacp_rate == NULL ? "NULL" : lacp_rate); |
| 4736 | return -EINVAL; |
| 4737 | } |
| 4738 | } |
| 4739 | } |
| 4740 | |
Jay Vosburgh | fd989c8 | 2008-11-04 17:51:16 -0800 | [diff] [blame] | 4741 | if (ad_select) { |
| 4742 | params->ad_select = bond_parse_parm(ad_select, ad_select_tbl); |
| 4743 | if (params->ad_select == -1) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4744 | pr_err(DRV_NAME |
Jay Vosburgh | fd989c8 | 2008-11-04 17:51:16 -0800 | [diff] [blame] | 4745 | ": Error: Invalid ad_select \"%s\"\n", |
| 4746 | ad_select == NULL ? "NULL" : ad_select); |
| 4747 | return -EINVAL; |
| 4748 | } |
| 4749 | |
| 4750 | if (bond_mode != BOND_MODE_8023AD) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4751 | pr_warning(DRV_NAME |
Jay Vosburgh | fd989c8 | 2008-11-04 17:51:16 -0800 | [diff] [blame] | 4752 | ": ad_select param only affects 802.3ad mode\n"); |
| 4753 | } |
| 4754 | } else { |
| 4755 | params->ad_select = BOND_AD_STABLE; |
| 4756 | } |
| 4757 | |
Jay Vosburgh | b8a9787 | 2008-06-13 18:12:04 -0700 | [diff] [blame] | 4758 | if (max_bonds < 0 || max_bonds > INT_MAX) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4759 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4760 | ": Warning: max_bonds (%d) not in range %d-%d, so it " |
Mitch Williams | 4e0952c | 2005-11-09 10:34:57 -0800 | [diff] [blame] | 4761 | "was reset to BOND_DEFAULT_MAX_BONDS (%d)\n", |
Jay Vosburgh | b8a9787 | 2008-06-13 18:12:04 -0700 | [diff] [blame] | 4762 | max_bonds, 0, INT_MAX, BOND_DEFAULT_MAX_BONDS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4763 | max_bonds = BOND_DEFAULT_MAX_BONDS; |
| 4764 | } |
| 4765 | |
| 4766 | if (miimon < 0) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4767 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4768 | ": Warning: miimon module parameter (%d), " |
| 4769 | "not in range 0-%d, so it was reset to %d\n", |
| 4770 | miimon, INT_MAX, BOND_LINK_MON_INTERV); |
| 4771 | miimon = BOND_LINK_MON_INTERV; |
| 4772 | } |
| 4773 | |
| 4774 | if (updelay < 0) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4775 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4776 | ": Warning: updelay module parameter (%d), " |
| 4777 | "not in range 0-%d, so it was reset to 0\n", |
| 4778 | updelay, INT_MAX); |
| 4779 | updelay = 0; |
| 4780 | } |
| 4781 | |
| 4782 | if (downdelay < 0) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4783 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4784 | ": Warning: downdelay module parameter (%d), " |
| 4785 | "not in range 0-%d, so it was reset to 0\n", |
| 4786 | downdelay, INT_MAX); |
| 4787 | downdelay = 0; |
| 4788 | } |
| 4789 | |
| 4790 | if ((use_carrier != 0) && (use_carrier != 1)) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4791 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4792 | ": Warning: use_carrier module parameter (%d), " |
| 4793 | "not of valid value (0/1), so it was set to 1\n", |
| 4794 | use_carrier); |
| 4795 | use_carrier = 1; |
| 4796 | } |
| 4797 | |
Moni Shoua | 7893b24 | 2008-05-17 21:10:12 -0700 | [diff] [blame] | 4798 | if (num_grat_arp < 0 || num_grat_arp > 255) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4799 | pr_warning(DRV_NAME |
Moni Shoua | 7893b24 | 2008-05-17 21:10:12 -0700 | [diff] [blame] | 4800 | ": Warning: num_grat_arp (%d) not in range 0-255 so it " |
| 4801 | "was reset to 1 \n", num_grat_arp); |
| 4802 | num_grat_arp = 1; |
| 4803 | } |
| 4804 | |
Brian Haley | 305d552 | 2008-11-04 17:51:14 -0800 | [diff] [blame] | 4805 | if (num_unsol_na < 0 || num_unsol_na > 255) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4806 | pr_warning(DRV_NAME |
Brian Haley | 305d552 | 2008-11-04 17:51:14 -0800 | [diff] [blame] | 4807 | ": Warning: num_unsol_na (%d) not in range 0-255 so it " |
| 4808 | "was reset to 1 \n", num_unsol_na); |
| 4809 | num_unsol_na = 1; |
| 4810 | } |
| 4811 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4812 | /* reset values for 802.3ad */ |
| 4813 | if (bond_mode == BOND_MODE_8023AD) { |
| 4814 | if (!miimon) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4815 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4816 | ": Warning: miimon must be specified, " |
| 4817 | "otherwise bonding will not detect link " |
| 4818 | "failure, speed and duplex which are " |
| 4819 | "essential for 802.3ad operation\n"); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4820 | pr_warning("Forcing miimon to 100msec\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4821 | miimon = 100; |
| 4822 | } |
| 4823 | } |
| 4824 | |
| 4825 | /* reset values for TLB/ALB */ |
| 4826 | if ((bond_mode == BOND_MODE_TLB) || |
| 4827 | (bond_mode == BOND_MODE_ALB)) { |
| 4828 | if (!miimon) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4829 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4830 | ": Warning: miimon must be specified, " |
| 4831 | "otherwise bonding will not detect link " |
| 4832 | "failure and link speed which are essential " |
| 4833 | "for TLB/ALB load balancing\n"); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4834 | pr_warning("Forcing miimon to 100msec\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4835 | miimon = 100; |
| 4836 | } |
| 4837 | } |
| 4838 | |
| 4839 | if (bond_mode == BOND_MODE_ALB) { |
| 4840 | printk(KERN_NOTICE DRV_NAME |
| 4841 | ": In ALB mode you might experience client " |
| 4842 | "disconnections upon reconnection of a link if the " |
| 4843 | "bonding module updelay parameter (%d msec) is " |
| 4844 | "incompatible with the forwarding delay time of the " |
| 4845 | "switch\n", |
| 4846 | updelay); |
| 4847 | } |
| 4848 | |
| 4849 | if (!miimon) { |
| 4850 | if (updelay || downdelay) { |
| 4851 | /* just warn the user the up/down delay will have |
| 4852 | * no effect since miimon is zero... |
| 4853 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4854 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4855 | ": Warning: miimon module parameter not set " |
| 4856 | "and updelay (%d) or downdelay (%d) module " |
| 4857 | "parameter is set; updelay and downdelay have " |
| 4858 | "no effect unless miimon is set\n", |
| 4859 | updelay, downdelay); |
| 4860 | } |
| 4861 | } else { |
| 4862 | /* don't allow arp monitoring */ |
| 4863 | if (arp_interval) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4864 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4865 | ": Warning: miimon (%d) and arp_interval (%d) " |
| 4866 | "can't be used simultaneously, disabling ARP " |
| 4867 | "monitoring\n", |
| 4868 | miimon, arp_interval); |
| 4869 | arp_interval = 0; |
| 4870 | } |
| 4871 | |
| 4872 | if ((updelay % miimon) != 0) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4873 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4874 | ": Warning: updelay (%d) is not a multiple " |
| 4875 | "of miimon (%d), updelay rounded to %d ms\n", |
| 4876 | updelay, miimon, (updelay / miimon) * miimon); |
| 4877 | } |
| 4878 | |
| 4879 | updelay /= miimon; |
| 4880 | |
| 4881 | if ((downdelay % miimon) != 0) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4882 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4883 | ": Warning: downdelay (%d) is not a multiple " |
| 4884 | "of miimon (%d), downdelay rounded to %d ms\n", |
| 4885 | downdelay, miimon, |
| 4886 | (downdelay / miimon) * miimon); |
| 4887 | } |
| 4888 | |
| 4889 | downdelay /= miimon; |
| 4890 | } |
| 4891 | |
| 4892 | if (arp_interval < 0) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4893 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4894 | ": Warning: arp_interval module parameter (%d) " |
| 4895 | ", not in range 0-%d, so it was reset to %d\n", |
| 4896 | arp_interval, INT_MAX, BOND_LINK_ARP_INTERV); |
| 4897 | arp_interval = BOND_LINK_ARP_INTERV; |
| 4898 | } |
| 4899 | |
| 4900 | for (arp_ip_count = 0; |
| 4901 | (arp_ip_count < BOND_MAX_ARP_TARGETS) && arp_ip_target[arp_ip_count]; |
| 4902 | arp_ip_count++) { |
| 4903 | /* not complete check, but should be good enough to |
| 4904 | catch mistakes */ |
| 4905 | if (!isdigit(arp_ip_target[arp_ip_count][0])) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4906 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4907 | ": Warning: bad arp_ip_target module parameter " |
| 4908 | "(%s), ARP monitoring will not be performed\n", |
| 4909 | arp_ip_target[arp_ip_count]); |
| 4910 | arp_interval = 0; |
| 4911 | } else { |
Al Viro | d3bb52b | 2007-08-22 20:06:58 -0400 | [diff] [blame] | 4912 | __be32 ip = in_aton(arp_ip_target[arp_ip_count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4913 | arp_target[arp_ip_count] = ip; |
| 4914 | } |
| 4915 | } |
| 4916 | |
| 4917 | if (arp_interval && !arp_ip_count) { |
| 4918 | /* don't allow arping if no arp_ip_target given... */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4919 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4920 | ": Warning: arp_interval module parameter (%d) " |
| 4921 | "specified without providing an arp_ip_target " |
| 4922 | "parameter, arp_interval was reset to 0\n", |
| 4923 | arp_interval); |
| 4924 | arp_interval = 0; |
| 4925 | } |
| 4926 | |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4927 | if (arp_validate) { |
| 4928 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4929 | pr_err(DRV_NAME |
| 4930 | ": arp_validate only supported in active-backup mode\n"); |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4931 | return -EINVAL; |
| 4932 | } |
| 4933 | if (!arp_interval) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4934 | pr_err(DRV_NAME |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4935 | ": arp_validate requires arp_interval\n"); |
| 4936 | return -EINVAL; |
| 4937 | } |
| 4938 | |
| 4939 | arp_validate_value = bond_parse_parm(arp_validate, |
| 4940 | arp_validate_tbl); |
| 4941 | if (arp_validate_value == -1) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4942 | pr_err(DRV_NAME |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4943 | ": Error: invalid arp_validate \"%s\"\n", |
| 4944 | arp_validate == NULL ? "NULL" : arp_validate); |
| 4945 | return -EINVAL; |
| 4946 | } |
| 4947 | } else |
| 4948 | arp_validate_value = 0; |
| 4949 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4950 | if (miimon) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4951 | pr_info(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4952 | ": MII link monitoring set to %d ms\n", |
| 4953 | miimon); |
| 4954 | } else if (arp_interval) { |
| 4955 | int i; |
| 4956 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4957 | pr_info(DRV_NAME ": ARP monitoring set to %d ms," |
| 4958 | " validate %s, with %d target(s):", |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 4959 | arp_interval, |
| 4960 | arp_validate_tbl[arp_validate_value].modename, |
| 4961 | arp_ip_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4962 | |
| 4963 | for (i = 0; i < arp_ip_count; i++) |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4964 | printk(" %s", arp_ip_target[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4965 | |
| 4966 | printk("\n"); |
| 4967 | |
Jay Vosburgh | b8a9787 | 2008-06-13 18:12:04 -0700 | [diff] [blame] | 4968 | } else if (max_bonds) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4969 | /* miimon and arp_interval not set, we need one so things |
| 4970 | * work as expected, see bonding.txt for details |
| 4971 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4972 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4973 | ": Warning: either miimon or arp_interval and " |
| 4974 | "arp_ip_target module parameters must be specified, " |
| 4975 | "otherwise bonding will not detect link failures! see " |
| 4976 | "bonding.txt for details.\n"); |
| 4977 | } |
| 4978 | |
| 4979 | if (primary && !USES_PRIMARY(bond_mode)) { |
| 4980 | /* currently, using a primary only makes sense |
| 4981 | * in active backup, TLB or ALB modes |
| 4982 | */ |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4983 | pr_warning(DRV_NAME |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4984 | ": Warning: %s primary device specified but has no " |
| 4985 | "effect in %s mode\n", |
| 4986 | primary, bond_mode_name(bond_mode)); |
| 4987 | primary = NULL; |
| 4988 | } |
| 4989 | |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 4990 | if (fail_over_mac) { |
| 4991 | fail_over_mac_value = bond_parse_parm(fail_over_mac, |
| 4992 | fail_over_mac_tbl); |
| 4993 | if (fail_over_mac_value == -1) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 4994 | pr_err(DRV_NAME |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 4995 | ": Error: invalid fail_over_mac \"%s\"\n", |
| 4996 | arp_validate == NULL ? "NULL" : arp_validate); |
| 4997 | return -EINVAL; |
| 4998 | } |
| 4999 | |
| 5000 | if (bond_mode != BOND_MODE_ACTIVEBACKUP) |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 5001 | pr_warning(DRV_NAME |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 5002 | ": Warning: fail_over_mac only affects " |
| 5003 | "active-backup mode.\n"); |
| 5004 | } else { |
| 5005 | fail_over_mac_value = BOND_FOM_NONE; |
| 5006 | } |
Jay Vosburgh | dd957c5 | 2007-10-09 19:57:24 -0700 | [diff] [blame] | 5007 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5008 | /* fill params struct with the proper values */ |
| 5009 | params->mode = bond_mode; |
Jay Vosburgh | 169a3e6 | 2005-06-26 17:54:11 -0400 | [diff] [blame] | 5010 | params->xmit_policy = xmit_hashtype; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5011 | params->miimon = miimon; |
Moni Shoua | 7893b24 | 2008-05-17 21:10:12 -0700 | [diff] [blame] | 5012 | params->num_grat_arp = num_grat_arp; |
Brian Haley | 305d552 | 2008-11-04 17:51:14 -0800 | [diff] [blame] | 5013 | params->num_unsol_na = num_unsol_na; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5014 | params->arp_interval = arp_interval; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 5015 | params->arp_validate = arp_validate_value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5016 | params->updelay = updelay; |
| 5017 | params->downdelay = downdelay; |
| 5018 | params->use_carrier = use_carrier; |
| 5019 | params->lacp_fast = lacp_fast; |
| 5020 | params->primary[0] = 0; |
Jay Vosburgh | 3915c1e | 2008-05-17 21:10:14 -0700 | [diff] [blame] | 5021 | params->fail_over_mac = fail_over_mac_value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5022 | |
| 5023 | if (primary) { |
| 5024 | strncpy(params->primary, primary, IFNAMSIZ); |
| 5025 | params->primary[IFNAMSIZ - 1] = 0; |
| 5026 | } |
| 5027 | |
| 5028 | memcpy(params->arp_targets, arp_target, sizeof(arp_target)); |
| 5029 | |
| 5030 | return 0; |
| 5031 | } |
| 5032 | |
Peter Zijlstra | 0daa230 | 2006-11-08 19:51:01 -0800 | [diff] [blame] | 5033 | static struct lock_class_key bonding_netdev_xmit_lock_key; |
David S. Miller | cf508b1 | 2008-07-22 14:16:42 -0700 | [diff] [blame] | 5034 | static struct lock_class_key bonding_netdev_addr_lock_key; |
Peter Zijlstra | 0daa230 | 2006-11-08 19:51:01 -0800 | [diff] [blame] | 5035 | |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 5036 | static void bond_set_lockdep_class_one(struct net_device *dev, |
| 5037 | struct netdev_queue *txq, |
| 5038 | void *_unused) |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 5039 | { |
| 5040 | lockdep_set_class(&txq->_xmit_lock, |
| 5041 | &bonding_netdev_xmit_lock_key); |
| 5042 | } |
| 5043 | |
| 5044 | static void bond_set_lockdep_class(struct net_device *dev) |
| 5045 | { |
David S. Miller | cf508b1 | 2008-07-22 14:16:42 -0700 | [diff] [blame] | 5046 | lockdep_set_class(&dev->addr_list_lock, |
| 5047 | &bonding_netdev_addr_lock_key); |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 5048 | netdev_for_each_tx_queue(dev, bond_set_lockdep_class_one, NULL); |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 5049 | } |
| 5050 | |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 5051 | /* |
| 5052 | * Called from registration process |
| 5053 | */ |
| 5054 | static int bond_init(struct net_device *bond_dev) |
| 5055 | { |
| 5056 | struct bonding *bond = netdev_priv(bond_dev); |
| 5057 | |
| 5058 | pr_debug("Begin bond_init for %s\n", bond_dev->name); |
| 5059 | |
| 5060 | bond->wq = create_singlethread_workqueue(bond_dev->name); |
| 5061 | if (!bond->wq) |
| 5062 | return -ENOMEM; |
| 5063 | |
| 5064 | bond_set_lockdep_class(bond_dev); |
| 5065 | |
| 5066 | netif_carrier_off(bond_dev); |
| 5067 | |
| 5068 | bond_create_proc_entry(bond); |
| 5069 | list_add_tail(&bond->bond_list, &bond_dev_list); |
| 5070 | |
| 5071 | return 0; |
| 5072 | } |
| 5073 | |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5074 | /* Create a new bond based on the specified name and bonding parameters. |
Jay Vosburgh | e4b91c4 | 2007-01-19 18:15:31 -0800 | [diff] [blame] | 5075 | * If name is NULL, obtain a suitable "bond%d" name for us. |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5076 | * Caller must NOT hold rtnl_lock; we need to release it here before we |
| 5077 | * set up our sysfs entries. |
| 5078 | */ |
Stephen Hemminger | d2991f7 | 2009-06-12 19:02:44 +0000 | [diff] [blame] | 5079 | int bond_create(const char *name) |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5080 | { |
| 5081 | struct net_device *bond_dev; |
| 5082 | int res; |
| 5083 | |
| 5084 | rtnl_lock(); |
Jay Vosburgh | 027ea04 | 2008-01-17 16:25:02 -0800 | [diff] [blame] | 5085 | /* Check to see if the bond already exists. */ |
Stephen Hemminger | 373500d | 2009-06-12 19:02:50 +0000 | [diff] [blame] | 5086 | /* FIXME: pass netns from caller */ |
| 5087 | if (name && __dev_get_by_name(&init_net, name)) { |
| 5088 | pr_err(DRV_NAME ": cannot add bond %s; already exists\n", |
| 5089 | name); |
| 5090 | res = -EEXIST; |
| 5091 | goto out_rtnl; |
Jay Vosburgh | 4fe4763 | 2008-01-29 18:07:45 -0800 | [diff] [blame] | 5092 | } |
Jay Vosburgh | 027ea04 | 2008-01-17 16:25:02 -0800 | [diff] [blame] | 5093 | |
Jay Vosburgh | e4b91c4 | 2007-01-19 18:15:31 -0800 | [diff] [blame] | 5094 | bond_dev = alloc_netdev(sizeof(struct bonding), name ? name : "", |
Stephen Hemminger | 181470f | 2009-06-12 19:02:52 +0000 | [diff] [blame] | 5095 | bond_setup); |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5096 | if (!bond_dev) { |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 5097 | pr_err(DRV_NAME ": %s: eek! can't alloc netdev!\n", |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5098 | name); |
| 5099 | res = -ENOMEM; |
| 5100 | goto out_rtnl; |
| 5101 | } |
| 5102 | |
Jay Vosburgh | e4b91c4 | 2007-01-19 18:15:31 -0800 | [diff] [blame] | 5103 | if (!name) { |
| 5104 | res = dev_alloc_name(bond_dev, "bond%d"); |
| 5105 | if (res < 0) |
| 5106 | goto out_netdev; |
| 5107 | } |
| 5108 | |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5109 | res = register_netdevice(bond_dev); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 5110 | if (res < 0) |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5111 | goto out_bond; |
Peter Zijlstra | 0daa230 | 2006-11-08 19:51:01 -0800 | [diff] [blame] | 5112 | |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 5113 | res = bond_create_sysfs_entry(netdev_priv(bond_dev)); |
Jiri Pirko | 1363d9b | 2009-05-01 15:35:28 -0700 | [diff] [blame] | 5114 | if (res < 0) |
| 5115 | goto out_unreg; |
Jay Vosburgh | 09c8927 | 2007-01-19 18:15:38 -0800 | [diff] [blame] | 5116 | |
Stephen Hemminger | 7e08384 | 2009-06-12 19:02:46 +0000 | [diff] [blame] | 5117 | rtnl_unlock(); |
Jay Vosburgh | 09c8927 | 2007-01-19 18:15:38 -0800 | [diff] [blame] | 5118 | return 0; |
| 5119 | |
Jiri Pirko | 1363d9b | 2009-05-01 15:35:28 -0700 | [diff] [blame] | 5120 | out_unreg: |
Jiri Pirko | 1363d9b | 2009-05-01 15:35:28 -0700 | [diff] [blame] | 5121 | unregister_netdevice(bond_dev); |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5122 | out_bond: |
| 5123 | bond_deinit(bond_dev); |
| 5124 | out_netdev: |
| 5125 | free_netdev(bond_dev); |
| 5126 | out_rtnl: |
| 5127 | rtnl_unlock(); |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5128 | return res; |
| 5129 | } |
| 5130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5131 | static int __init bonding_init(void) |
| 5132 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5133 | int i; |
| 5134 | int res; |
| 5135 | |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 5136 | pr_info("%s", version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5137 | |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5138 | res = bond_check_params(&bonding_defaults); |
Stephen Hemminger | 3d632c3 | 2009-06-12 19:02:48 +0000 | [diff] [blame] | 5139 | if (res) |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5140 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5141 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5142 | bond_create_proc_dir(); |
Jay Vosburgh | 027ea04 | 2008-01-17 16:25:02 -0800 | [diff] [blame] | 5143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5144 | for (i = 0; i < max_bonds; i++) { |
Stephen Hemminger | d2991f7 | 2009-06-12 19:02:44 +0000 | [diff] [blame] | 5145 | res = bond_create(NULL); |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5146 | if (res) |
| 5147 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5148 | } |
| 5149 | |
Mitch Williams | b76cdba | 2005-11-09 10:36:41 -0800 | [diff] [blame] | 5150 | res = bond_create_sysfs(); |
| 5151 | if (res) |
| 5152 | goto err; |
| 5153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5154 | register_netdevice_notifier(&bond_netdev_notifier); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 5155 | register_inetaddr_notifier(&bond_inetaddr_notifier); |
Brian Haley | 305d552 | 2008-11-04 17:51:14 -0800 | [diff] [blame] | 5156 | bond_register_ipv6_notifier(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5157 | |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5158 | goto out; |
| 5159 | err: |
Florin Malita | 40abc27 | 2005-09-18 00:24:12 -0700 | [diff] [blame] | 5160 | rtnl_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5161 | bond_free_all(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5162 | rtnl_unlock(); |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5163 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5164 | return res; |
Mitch Williams | dfe6039 | 2005-11-09 10:36:04 -0800 | [diff] [blame] | 5165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5166 | } |
| 5167 | |
| 5168 | static void __exit bonding_exit(void) |
| 5169 | { |
| 5170 | unregister_netdevice_notifier(&bond_netdev_notifier); |
Jay Vosburgh | c3ade5c | 2005-06-26 17:52:20 -0400 | [diff] [blame] | 5171 | unregister_inetaddr_notifier(&bond_inetaddr_notifier); |
Brian Haley | 305d552 | 2008-11-04 17:51:14 -0800 | [diff] [blame] | 5172 | bond_unregister_ipv6_notifier(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5173 | |
Pavel Emelyanov | ae68c39 | 2008-05-02 17:49:39 -0700 | [diff] [blame] | 5174 | bond_destroy_sysfs(); |
| 5175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5176 | rtnl_lock(); |
| 5177 | bond_free_all(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5178 | rtnl_unlock(); |
| 5179 | } |
| 5180 | |
| 5181 | module_init(bonding_init); |
| 5182 | module_exit(bonding_exit); |
| 5183 | MODULE_LICENSE("GPL"); |
| 5184 | MODULE_VERSION(DRV_VERSION); |
| 5185 | MODULE_DESCRIPTION(DRV_DESCRIPTION ", v" DRV_VERSION); |
| 5186 | MODULE_AUTHOR("Thomas Davis, tadavis@lbl.gov and many others"); |