Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * INET An implementation of the TCP/IP protocol suite for the LINUX |
| 3 | * operating system. INET is implemented using the BSD Socket |
| 4 | * interface as the means of communication with the user level. |
| 5 | * |
| 6 | * Definitions for the Interfaces handler. |
| 7 | * |
| 8 | * Version: @(#)dev.h 1.0.10 08/12/93 |
| 9 | * |
Jesper Juhl | 02c30a8 | 2005-05-05 16:16:16 -0700 | [diff] [blame] | 10 | * Authors: Ross Biro |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
| 12 | * Corey Minyard <wf-rch!minyard@relay.EU.net> |
| 13 | * Donald J. Becker, <becker@cesdis.gsfc.nasa.gov> |
Alan Cox | 113aa83 | 2008-10-13 19:01:08 -0700 | [diff] [blame] | 14 | * Alan Cox, <alan@lxorguk.ukuu.org.uk> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | * Bjorn Ekwall. <bj0rn@blox.se> |
| 16 | * Pekka Riikonen <priikone@poseidon.pspt.fi> |
| 17 | * |
| 18 | * This program is free software; you can redistribute it and/or |
| 19 | * modify it under the terms of the GNU General Public License |
| 20 | * as published by the Free Software Foundation; either version |
| 21 | * 2 of the License, or (at your option) any later version. |
| 22 | * |
| 23 | * Moved to /usr/include/linux for NET3 |
| 24 | */ |
| 25 | #ifndef _LINUX_NETDEVICE_H |
| 26 | #define _LINUX_NETDEVICE_H |
| 27 | |
Jean Pihet | e8db0be | 2011-08-25 15:35:03 +0200 | [diff] [blame] | 28 | #include <linux/pm_qos.h> |
Al Viro | d7fe0f2 | 2006-12-03 23:15:30 -0500 | [diff] [blame] | 29 | #include <linux/timer.h> |
Paul Gortmaker | 187f188 | 2011-11-23 20:12:59 -0500 | [diff] [blame] | 30 | #include <linux/bug.h> |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 31 | #include <linux/delay.h> |
Arun Sharma | 60063497 | 2011-07-26 16:09:06 -0700 | [diff] [blame] | 32 | #include <linux/atomic.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <asm/cache.h> |
| 34 | #include <asm/byteorder.h> |
| 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <linux/percpu.h> |
David S. Miller | 4d5b78c | 2009-05-06 16:52:51 -0700 | [diff] [blame] | 37 | #include <linux/rculist.h> |
Chris Leech | db21733 | 2006-06-17 21:24:58 -0700 | [diff] [blame] | 38 | #include <linux/dmaengine.h> |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 39 | #include <linux/workqueue.h> |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 40 | #include <linux/dynamic_queue_limits.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Patrick McHardy | b1b67dd | 2009-04-20 04:49:28 +0000 | [diff] [blame] | 42 | #include <linux/ethtool.h> |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 43 | #include <net/net_namespace.h> |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 44 | #include <net/dsa.h> |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 45 | #ifdef CONFIG_DCB |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 46 | #include <net/dcbnl.h> |
| 47 | #endif |
Neil Horman | 5bc1421 | 2011-11-22 05:10:51 +0000 | [diff] [blame] | 48 | #include <net/netprio_cgroup.h> |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 49 | |
Michał Mirosław | a59e2ec | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 50 | #include <linux/netdev_features.h> |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 51 | #include <linux/neighbour.h> |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 52 | #include <uapi/linux/netdevice.h> |
Michał Mirosław | a59e2ec | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 53 | |
Jeff Moyer | 115c1d6 | 2005-06-22 22:05:31 -0700 | [diff] [blame] | 54 | struct netpoll_info; |
Paul Gortmaker | 313162d | 2012-01-30 11:46:54 -0500 | [diff] [blame] | 55 | struct device; |
Richard Cochran | c1f19b5 | 2010-07-17 08:49:36 +0000 | [diff] [blame] | 56 | struct phy_device; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 57 | /* 802.11 specific */ |
| 58 | struct wireless_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | /* source back-compat hooks */ |
| 60 | #define SET_ETHTOOL_OPS(netdev,ops) \ |
| 61 | ( (netdev)->ethtool_ops = (ops) ) |
| 62 | |
Stanislaw Gruszka | d07d750 | 2013-01-10 23:19:10 +0000 | [diff] [blame] | 63 | extern void netdev_set_default_ethtool_ops(struct net_device *dev, |
| 64 | const struct ethtool_ops *ops); |
| 65 | |
Stefan Assmann | c1f7942 | 2010-07-22 02:50:21 +0000 | [diff] [blame] | 66 | /* hardware address assignment types */ |
| 67 | #define NET_ADDR_PERM 0 /* address is permanent (default) */ |
| 68 | #define NET_ADDR_RANDOM 1 /* address is generated randomly */ |
| 69 | #define NET_ADDR_STOLEN 2 /* address is stolen from other device */ |
Jiri Pirko | fbdeca2 | 2013-01-01 03:30:16 +0000 | [diff] [blame] | 70 | #define NET_ADDR_SET 3 /* address is set using |
| 71 | * dev_set_mac_address() */ |
Stefan Assmann | c1f7942 | 2010-07-22 02:50:21 +0000 | [diff] [blame] | 72 | |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 73 | /* Backlog congestion levels */ |
| 74 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ |
| 75 | #define NET_RX_DROP 1 /* packet dropped */ |
| 76 | |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 77 | /* |
| 78 | * Transmit return codes: transmit return codes originate from three different |
| 79 | * namespaces: |
| 80 | * |
| 81 | * - qdisc return codes |
| 82 | * - driver transmit return codes |
| 83 | * - errno values |
| 84 | * |
| 85 | * Drivers are allowed to return any one of those in their hard_start_xmit() |
| 86 | * function. Real network devices commonly used with qdiscs should only return |
| 87 | * the driver transmit return codes though - when qdiscs are used, the actual |
| 88 | * transmission happens asynchronously, so the value is not propagated to |
| 89 | * higher layers. Virtual network devices transmit synchronously, in this case |
| 90 | * the driver transmit return codes are consumed by dev_queue_xmit(), all |
| 91 | * others are propagated to higher layers. |
| 92 | */ |
| 93 | |
| 94 | /* qdisc ->enqueue() return codes. */ |
| 95 | #define NET_XMIT_SUCCESS 0x00 |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 96 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
| 97 | #define NET_XMIT_CN 0x02 /* congestion notification */ |
| 98 | #define NET_XMIT_POLICED 0x03 /* skb is shot by police */ |
| 99 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | |
Gerrit Renker | b9df3cb | 2006-11-14 11:21:36 -0200 | [diff] [blame] | 101 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
| 102 | * indicates that the device will soon be dropping packets, or already drops |
| 103 | * some packets of the same priority; prompting us to send less aggressively. */ |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 104 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
| 106 | |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 107 | /* Driver transmit return codes */ |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 108 | #define NETDEV_TX_MASK 0xf0 |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 109 | |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 110 | enum netdev_tx { |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 111 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 112 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
| 113 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ |
| 114 | NETDEV_TX_LOCKED = 0x20, /* driver tx lock was already taken */ |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 115 | }; |
| 116 | typedef enum netdev_tx netdev_tx_t; |
| 117 | |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 118 | /* |
| 119 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; |
| 120 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. |
| 121 | */ |
| 122 | static inline bool dev_xmit_complete(int rc) |
| 123 | { |
| 124 | /* |
| 125 | * Positive cases with an skb consumed by a driver: |
| 126 | * - successful transmission (rc == NETDEV_TX_OK) |
| 127 | * - error while transmitting (rc < 0) |
| 128 | * - error while queueing to a different device (rc & NET_XMIT_MASK) |
| 129 | */ |
| 130 | if (likely(rc < NET_XMIT_MASK)) |
| 131 | return true; |
| 132 | |
| 133 | return false; |
| 134 | } |
| 135 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | /* |
| 137 | * Compute the worst case header length according to the protocols |
| 138 | * used. |
| 139 | */ |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 140 | |
Ben Hutchings | d11ead7 | 2011-11-25 14:40:26 +0000 | [diff] [blame] | 141 | #if defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) |
David S. Miller | 8388e3d | 2008-05-12 20:17:33 -0700 | [diff] [blame] | 142 | # if defined(CONFIG_MAC80211_MESH) |
| 143 | # define LL_MAX_HEADER 128 |
| 144 | # else |
| 145 | # define LL_MAX_HEADER 96 |
| 146 | # endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | #else |
David S. Miller | 8388e3d | 2008-05-12 20:17:33 -0700 | [diff] [blame] | 148 | # define LL_MAX_HEADER 32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | #endif |
| 150 | |
Ben Hutchings | d11ead7 | 2011-11-25 14:40:26 +0000 | [diff] [blame] | 151 | #if !IS_ENABLED(CONFIG_NET_IPIP) && !IS_ENABLED(CONFIG_NET_IPGRE) && \ |
| 152 | !IS_ENABLED(CONFIG_IPV6_SIT) && !IS_ENABLED(CONFIG_IPV6_TUNNEL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | #define MAX_HEADER LL_MAX_HEADER |
| 154 | #else |
| 155 | #define MAX_HEADER (LL_MAX_HEADER + 48) |
| 156 | #endif |
| 157 | |
| 158 | /* |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 159 | * Old network device statistics. Fields are native words |
| 160 | * (unsigned long) so they can be read and written atomically. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | */ |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 162 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 163 | struct net_device_stats { |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 164 | unsigned long rx_packets; |
| 165 | unsigned long tx_packets; |
| 166 | unsigned long rx_bytes; |
| 167 | unsigned long tx_bytes; |
| 168 | unsigned long rx_errors; |
| 169 | unsigned long tx_errors; |
| 170 | unsigned long rx_dropped; |
| 171 | unsigned long tx_dropped; |
| 172 | unsigned long multicast; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | unsigned long collisions; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | unsigned long rx_length_errors; |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 175 | unsigned long rx_over_errors; |
| 176 | unsigned long rx_crc_errors; |
| 177 | unsigned long rx_frame_errors; |
| 178 | unsigned long rx_fifo_errors; |
| 179 | unsigned long rx_missed_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | unsigned long tx_aborted_errors; |
| 181 | unsigned long tx_carrier_errors; |
| 182 | unsigned long tx_fifo_errors; |
| 183 | unsigned long tx_heartbeat_errors; |
| 184 | unsigned long tx_window_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | unsigned long rx_compressed; |
| 186 | unsigned long tx_compressed; |
| 187 | }; |
| 188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
| 190 | #include <linux/cache.h> |
| 191 | #include <linux/skbuff.h> |
| 192 | |
Eric Dumazet | adc9300 | 2011-11-17 03:13:26 +0000 | [diff] [blame] | 193 | #ifdef CONFIG_RPS |
Ingo Molnar | c5905af | 2012-02-24 08:31:31 +0100 | [diff] [blame] | 194 | #include <linux/static_key.h> |
| 195 | extern struct static_key rps_needed; |
Eric Dumazet | adc9300 | 2011-11-17 03:13:26 +0000 | [diff] [blame] | 196 | #endif |
| 197 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | struct neighbour; |
| 199 | struct neigh_parms; |
| 200 | struct sk_buff; |
| 201 | |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 202 | struct netdev_hw_addr { |
| 203 | struct list_head list; |
| 204 | unsigned char addr[MAX_ADDR_LEN]; |
| 205 | unsigned char type; |
Jiri Pirko | ccffad25 | 2009-05-22 23:22:17 +0000 | [diff] [blame] | 206 | #define NETDEV_HW_ADDR_T_LAN 1 |
| 207 | #define NETDEV_HW_ADDR_T_SAN 2 |
| 208 | #define NETDEV_HW_ADDR_T_SLAVE 3 |
| 209 | #define NETDEV_HW_ADDR_T_UNICAST 4 |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 210 | #define NETDEV_HW_ADDR_T_MULTICAST 5 |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 211 | bool global_use; |
Vlad Yasevich | 4cd729b0 | 2013-04-15 09:54:25 +0000 | [diff] [blame] | 212 | int sync_cnt; |
Eric Dumazet | 8f8f103 | 2010-09-19 11:24:02 -0700 | [diff] [blame] | 213 | int refcount; |
Vlad Yasevich | 4543fbe | 2013-04-02 17:10:07 -0400 | [diff] [blame] | 214 | int synced; |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 215 | struct rcu_head rcu_head; |
| 216 | }; |
| 217 | |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 218 | struct netdev_hw_addr_list { |
| 219 | struct list_head list; |
| 220 | int count; |
| 221 | }; |
| 222 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 223 | #define netdev_hw_addr_list_count(l) ((l)->count) |
| 224 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) |
| 225 | #define netdev_hw_addr_list_for_each(ha, l) \ |
| 226 | list_for_each_entry(ha, &(l)->list, list) |
| 227 | |
| 228 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
| 229 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) |
Jiri Pirko | 32e7bfc | 2010-01-25 13:36:10 -0800 | [diff] [blame] | 230 | #define netdev_for_each_uc_addr(ha, dev) \ |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 231 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) |
Jiri Pirko | 32e7bfc | 2010-01-25 13:36:10 -0800 | [diff] [blame] | 232 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 233 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
| 234 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) |
Pavel Roskin | 18e225f | 2010-04-07 16:40:09 -0700 | [diff] [blame] | 235 | #define netdev_for_each_mc_addr(ha, dev) \ |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 236 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
Jiri Pirko | 6683ece | 2010-02-04 10:22:25 -0800 | [diff] [blame] | 237 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 238 | struct hh_cache { |
David S. Miller | f6b72b6 | 2011-07-14 07:53:20 -0700 | [diff] [blame] | 239 | u16 hh_len; |
David S. Miller | 5c25f68 | 2011-07-13 00:51:10 -0700 | [diff] [blame] | 240 | u16 __pad; |
Stephen Hemminger | 3644f0c | 2006-12-07 15:08:17 -0800 | [diff] [blame] | 241 | seqlock_t hh_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | |
| 243 | /* cached hardware header; allow for machine alignment needs. */ |
| 244 | #define HH_DATA_MOD 16 |
| 245 | #define HH_DATA_OFF(__len) \ |
Jiri Benc | 5ba0eac | 2005-06-02 16:48:05 -0700 | [diff] [blame] | 246 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | #define HH_DATA_ALIGN(__len) \ |
| 248 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) |
| 249 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; |
| 250 | }; |
| 251 | |
| 252 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. |
| 253 | * Alternative is: |
| 254 | * dev->hard_header_len ? (dev->hard_header_len + |
| 255 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 |
| 256 | * |
| 257 | * We could use other alignment values, but we must maintain the |
| 258 | * relationship HH alignment <= LL alignment. |
| 259 | */ |
| 260 | #define LL_RESERVED_SPACE(dev) \ |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 261 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 263 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 265 | struct header_ops { |
| 266 | int (*create) (struct sk_buff *skb, struct net_device *dev, |
| 267 | unsigned short type, const void *daddr, |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 268 | const void *saddr, unsigned int len); |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 269 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); |
| 270 | int (*rebuild)(struct sk_buff *skb); |
David S. Miller | e69dd33 | 2011-07-12 23:28:12 -0700 | [diff] [blame] | 271 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh, __be16 type); |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 272 | void (*cache_update)(struct hh_cache *hh, |
| 273 | const struct net_device *dev, |
| 274 | const unsigned char *haddr); |
| 275 | }; |
| 276 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | /* These flag bits are private to the generic network queueing |
| 278 | * layer, they may not be explicitly referenced by any other |
| 279 | * code. |
| 280 | */ |
| 281 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 282 | enum netdev_state_t { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | __LINK_STATE_START, |
| 284 | __LINK_STATE_PRESENT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | __LINK_STATE_NOCARRIER, |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 286 | __LINK_STATE_LINKWATCH_PENDING, |
| 287 | __LINK_STATE_DORMANT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | }; |
| 289 | |
| 290 | |
| 291 | /* |
| 292 | * This structure holds at boot time configured netdevice settings. They |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 293 | * are then used in the device probing. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | */ |
| 295 | struct netdev_boot_setup { |
| 296 | char name[IFNAMSIZ]; |
| 297 | struct ifmap map; |
| 298 | }; |
| 299 | #define NETDEV_BOOT_SETUP_MAX 8 |
| 300 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 301 | extern int __init netdev_boot_setup(char *str); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
| 303 | /* |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 304 | * Structure for NAPI scheduling similar to tasklet but with weighting |
| 305 | */ |
| 306 | struct napi_struct { |
| 307 | /* The poll_list must only be managed by the entity which |
| 308 | * changes the state of the NAPI_STATE_SCHED bit. This means |
| 309 | * whoever atomically sets that bit can add this napi_struct |
| 310 | * to the per-cpu poll_list, and whoever clears that bit |
| 311 | * can remove from the list right before clearing the bit. |
| 312 | */ |
| 313 | struct list_head poll_list; |
| 314 | |
| 315 | unsigned long state; |
| 316 | int weight; |
Eric Dumazet | 404f7c9 | 2012-09-26 07:07:47 +0000 | [diff] [blame] | 317 | unsigned int gro_count; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 318 | int (*poll)(struct napi_struct *, int); |
| 319 | #ifdef CONFIG_NETPOLL |
| 320 | spinlock_t poll_lock; |
| 321 | int poll_owner; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 322 | #endif |
Herbert Xu | 5d38a07 | 2009-01-04 16:13:40 -0800 | [diff] [blame] | 323 | struct net_device *dev; |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 324 | struct sk_buff *gro_list; |
Herbert Xu | 5d38a07 | 2009-01-04 16:13:40 -0800 | [diff] [blame] | 325 | struct sk_buff *skb; |
Eric Dumazet | 404f7c9 | 2012-09-26 07:07:47 +0000 | [diff] [blame] | 326 | struct list_head dev_list; |
Eliezer Tamir | af12fa6 | 2013-06-10 11:39:41 +0300 | [diff] [blame] | 327 | struct hlist_node napi_hash_node; |
| 328 | unsigned int napi_id; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 329 | }; |
| 330 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 331 | enum { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 332 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 333 | NAPI_STATE_DISABLE, /* Disable pending */ |
Neil Horman | 7b363e4 | 2008-12-09 23:22:26 -0800 | [diff] [blame] | 334 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
Eliezer Tamir | af12fa6 | 2013-06-10 11:39:41 +0300 | [diff] [blame] | 335 | NAPI_STATE_HASHED, /* In NAPI hash */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 336 | }; |
| 337 | |
Ben Hutchings | 5b252f0 | 2009-10-29 07:17:09 +0000 | [diff] [blame] | 338 | enum gro_result { |
Herbert Xu | d1c76af | 2009-03-16 10:50:02 -0700 | [diff] [blame] | 339 | GRO_MERGED, |
| 340 | GRO_MERGED_FREE, |
| 341 | GRO_HELD, |
| 342 | GRO_NORMAL, |
| 343 | GRO_DROP, |
| 344 | }; |
Ben Hutchings | 5b252f0 | 2009-10-29 07:17:09 +0000 | [diff] [blame] | 345 | typedef enum gro_result gro_result_t; |
Herbert Xu | d1c76af | 2009-03-16 10:50:02 -0700 | [diff] [blame] | 346 | |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 347 | /* |
| 348 | * enum rx_handler_result - Possible return values for rx_handlers. |
| 349 | * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it |
| 350 | * further. |
| 351 | * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in |
| 352 | * case skb->dev was changed by rx_handler. |
| 353 | * @RX_HANDLER_EXACT: Force exact delivery, no wildcard. |
| 354 | * @RX_HANDLER_PASS: Do nothing, passe the skb as if no rx_handler was called. |
| 355 | * |
| 356 | * rx_handlers are functions called from inside __netif_receive_skb(), to do |
| 357 | * special processing of the skb, prior to delivery to protocol handlers. |
| 358 | * |
| 359 | * Currently, a net_device can only have a single rx_handler registered. Trying |
| 360 | * to register a second rx_handler will return -EBUSY. |
| 361 | * |
| 362 | * To register a rx_handler on a net_device, use netdev_rx_handler_register(). |
| 363 | * To unregister a rx_handler on a net_device, use |
| 364 | * netdev_rx_handler_unregister(). |
| 365 | * |
| 366 | * Upon return, rx_handler is expected to tell __netif_receive_skb() what to |
| 367 | * do with the skb. |
| 368 | * |
| 369 | * If the rx_handler consumed to skb in some way, it should return |
| 370 | * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for |
| 371 | * the skb to be delivered in some other ways. |
| 372 | * |
| 373 | * If the rx_handler changed skb->dev, to divert the skb to another |
| 374 | * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the |
| 375 | * new device will be called if it exists. |
| 376 | * |
| 377 | * If the rx_handler consider the skb should be ignored, it should return |
| 378 | * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that |
Adam Buchbinder | d93cf06 | 2012-09-19 21:47:58 -0400 | [diff] [blame] | 379 | * are registered on exact device (ptype->dev == skb->dev). |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 380 | * |
| 381 | * If the rx_handler didn't changed skb->dev, but want the skb to be normally |
| 382 | * delivered, it should return RX_HANDLER_PASS. |
| 383 | * |
| 384 | * A device without a registered rx_handler will behave as if rx_handler |
| 385 | * returned RX_HANDLER_PASS. |
| 386 | */ |
| 387 | |
| 388 | enum rx_handler_result { |
| 389 | RX_HANDLER_CONSUMED, |
| 390 | RX_HANDLER_ANOTHER, |
| 391 | RX_HANDLER_EXACT, |
| 392 | RX_HANDLER_PASS, |
| 393 | }; |
| 394 | typedef enum rx_handler_result rx_handler_result_t; |
| 395 | typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb); |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 396 | |
Harvey Harrison | b3c9752 | 2008-02-13 15:03:15 -0800 | [diff] [blame] | 397 | extern void __napi_schedule(struct napi_struct *n); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 398 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 399 | static inline bool napi_disable_pending(struct napi_struct *n) |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 400 | { |
| 401 | return test_bit(NAPI_STATE_DISABLE, &n->state); |
| 402 | } |
| 403 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 404 | /** |
| 405 | * napi_schedule_prep - check if napi can be scheduled |
| 406 | * @n: napi context |
| 407 | * |
| 408 | * Test if NAPI routine is already running, and if not mark |
| 409 | * it as running. This is used as a condition variable |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 410 | * insure only one NAPI poll instance runs. We also make |
| 411 | * sure there is no pending NAPI disable. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 412 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 413 | static inline bool napi_schedule_prep(struct napi_struct *n) |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 414 | { |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 415 | return !napi_disable_pending(n) && |
| 416 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 417 | } |
| 418 | |
| 419 | /** |
| 420 | * napi_schedule - schedule NAPI poll |
| 421 | * @n: napi context |
| 422 | * |
| 423 | * Schedule NAPI poll routine to be called if it is not already |
| 424 | * running. |
| 425 | */ |
| 426 | static inline void napi_schedule(struct napi_struct *n) |
| 427 | { |
| 428 | if (napi_schedule_prep(n)) |
| 429 | __napi_schedule(n); |
| 430 | } |
| 431 | |
Roland Dreier | bfe13f5 | 2007-10-09 15:47:37 -0700 | [diff] [blame] | 432 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 433 | static inline bool napi_reschedule(struct napi_struct *napi) |
Roland Dreier | bfe13f5 | 2007-10-09 15:47:37 -0700 | [diff] [blame] | 434 | { |
| 435 | if (napi_schedule_prep(napi)) { |
| 436 | __napi_schedule(napi); |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 437 | return true; |
Roland Dreier | bfe13f5 | 2007-10-09 15:47:37 -0700 | [diff] [blame] | 438 | } |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 439 | return false; |
Roland Dreier | bfe13f5 | 2007-10-09 15:47:37 -0700 | [diff] [blame] | 440 | } |
| 441 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 442 | /** |
| 443 | * napi_complete - NAPI processing complete |
| 444 | * @n: napi context |
| 445 | * |
| 446 | * Mark NAPI processing as complete. |
| 447 | */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 448 | extern void __napi_complete(struct napi_struct *n); |
| 449 | extern void napi_complete(struct napi_struct *n); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 450 | |
| 451 | /** |
Eliezer Tamir | af12fa6 | 2013-06-10 11:39:41 +0300 | [diff] [blame] | 452 | * napi_by_id - lookup a NAPI by napi_id |
| 453 | * @napi_id: hashed napi_id |
| 454 | * |
| 455 | * lookup @napi_id in napi_hash table |
| 456 | * must be called under rcu_read_lock() |
| 457 | */ |
| 458 | extern struct napi_struct *napi_by_id(unsigned int napi_id); |
| 459 | |
| 460 | /** |
| 461 | * napi_hash_add - add a NAPI to global hashtable |
| 462 | * @napi: napi context |
| 463 | * |
| 464 | * generate a new napi_id and store a @napi under it in napi_hash |
| 465 | */ |
| 466 | extern void napi_hash_add(struct napi_struct *napi); |
| 467 | |
| 468 | /** |
| 469 | * napi_hash_del - remove a NAPI from global table |
| 470 | * @napi: napi context |
| 471 | * |
| 472 | * Warning: caller must observe rcu grace period |
| 473 | * before freeing memory containing @napi |
| 474 | */ |
| 475 | extern void napi_hash_del(struct napi_struct *napi); |
| 476 | |
| 477 | /** |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 478 | * napi_disable - prevent NAPI from scheduling |
| 479 | * @n: napi context |
| 480 | * |
| 481 | * Stop NAPI from being scheduled on this context. |
| 482 | * Waits till any outstanding processing completes. |
| 483 | */ |
| 484 | static inline void napi_disable(struct napi_struct *n) |
| 485 | { |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 486 | set_bit(NAPI_STATE_DISABLE, &n->state); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 487 | while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) |
Benjamin Herrenschmidt | 43cc738 | 2007-10-26 04:23:22 -0700 | [diff] [blame] | 488 | msleep(1); |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 489 | clear_bit(NAPI_STATE_DISABLE, &n->state); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 490 | } |
| 491 | |
| 492 | /** |
| 493 | * napi_enable - enable NAPI scheduling |
| 494 | * @n: napi context |
| 495 | * |
| 496 | * Resume NAPI from being scheduled on this context. |
| 497 | * Must be paired with napi_disable. |
| 498 | */ |
| 499 | static inline void napi_enable(struct napi_struct *n) |
| 500 | { |
| 501 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); |
| 502 | smp_mb__before_clear_bit(); |
| 503 | clear_bit(NAPI_STATE_SCHED, &n->state); |
| 504 | } |
| 505 | |
Stephen Hemminger | c264c3d | 2007-10-17 13:26:41 -0700 | [diff] [blame] | 506 | #ifdef CONFIG_SMP |
| 507 | /** |
| 508 | * napi_synchronize - wait until NAPI is not running |
| 509 | * @n: napi context |
| 510 | * |
| 511 | * Wait until NAPI is done being scheduled on this context. |
| 512 | * Waits till any outstanding processing completes but |
| 513 | * does not disable future activations. |
| 514 | */ |
| 515 | static inline void napi_synchronize(const struct napi_struct *n) |
| 516 | { |
| 517 | while (test_bit(NAPI_STATE_SCHED, &n->state)) |
| 518 | msleep(1); |
| 519 | } |
| 520 | #else |
| 521 | # define napi_synchronize(n) barrier() |
| 522 | #endif |
| 523 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 524 | enum netdev_queue_state_t { |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 525 | __QUEUE_STATE_DRV_XOFF, |
| 526 | __QUEUE_STATE_STACK_XOFF, |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 527 | __QUEUE_STATE_FROZEN, |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 528 | #define QUEUE_STATE_ANY_XOFF ((1 << __QUEUE_STATE_DRV_XOFF) | \ |
| 529 | (1 << __QUEUE_STATE_STACK_XOFF)) |
| 530 | #define QUEUE_STATE_ANY_XOFF_OR_FROZEN (QUEUE_STATE_ANY_XOFF | \ |
| 531 | (1 << __QUEUE_STATE_FROZEN)) |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 532 | }; |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 533 | /* |
| 534 | * __QUEUE_STATE_DRV_XOFF is used by drivers to stop the transmit queue. The |
| 535 | * netif_tx_* functions below are used to manipulate this flag. The |
| 536 | * __QUEUE_STATE_STACK_XOFF flag is used by the stack to stop the transmit |
| 537 | * queue independently. The netif_xmit_*stopped functions below are called |
| 538 | * to check if the queue has been stopped by the driver or stack (either |
| 539 | * of the XOFF bits are set in the state). Drivers should not need to call |
| 540 | * netif_xmit*stopped functions, they should only be using netif_tx_*. |
| 541 | */ |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 542 | |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 543 | struct netdev_queue { |
Eric Dumazet | 6a321cb | 2009-04-28 04:43:42 -0700 | [diff] [blame] | 544 | /* |
| 545 | * read mostly part |
| 546 | */ |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 547 | struct net_device *dev; |
David S. Miller | b0e1e64 | 2008-07-08 17:42:10 -0700 | [diff] [blame] | 548 | struct Qdisc *qdisc; |
| 549 | struct Qdisc *qdisc_sleeping; |
david decotigny | ccf5ff6 | 2011-11-16 12:15:10 +0000 | [diff] [blame] | 550 | #ifdef CONFIG_SYSFS |
Tom Herbert | 1d24eb4 | 2010-11-21 13:17:27 +0000 | [diff] [blame] | 551 | struct kobject kobj; |
| 552 | #endif |
Eric Dumazet | f2cd2d3 | 2010-11-29 08:14:37 +0000 | [diff] [blame] | 553 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
| 554 | int numa_node; |
| 555 | #endif |
Eric Dumazet | 6a321cb | 2009-04-28 04:43:42 -0700 | [diff] [blame] | 556 | /* |
| 557 | * write mostly part |
| 558 | */ |
| 559 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; |
| 560 | int xmit_lock_owner; |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 561 | /* |
| 562 | * please use this field instead of dev->trans_start |
| 563 | */ |
| 564 | unsigned long trans_start; |
david decotigny | ccf5ff6 | 2011-11-16 12:15:10 +0000 | [diff] [blame] | 565 | |
| 566 | /* |
| 567 | * Number of TX timeouts for this queue |
| 568 | * (/sys/class/net/DEV/Q/trans_timeout) |
| 569 | */ |
| 570 | unsigned long trans_timeout; |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 571 | |
| 572 | unsigned long state; |
| 573 | |
| 574 | #ifdef CONFIG_BQL |
| 575 | struct dql dql; |
| 576 | #endif |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 577 | } ____cacheline_aligned_in_smp; |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 578 | |
Eric Dumazet | f2cd2d3 | 2010-11-29 08:14:37 +0000 | [diff] [blame] | 579 | static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) |
| 580 | { |
| 581 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
| 582 | return q->numa_node; |
| 583 | #else |
Changli Gao | b236da6 | 2010-12-14 03:09:15 +0000 | [diff] [blame] | 584 | return NUMA_NO_NODE; |
Eric Dumazet | f2cd2d3 | 2010-11-29 08:14:37 +0000 | [diff] [blame] | 585 | #endif |
| 586 | } |
| 587 | |
| 588 | static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node) |
| 589 | { |
| 590 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
| 591 | q->numa_node = node; |
| 592 | #endif |
| 593 | } |
| 594 | |
Eric Dumazet | df33454 | 2010-03-24 19:13:54 +0000 | [diff] [blame] | 595 | #ifdef CONFIG_RPS |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 596 | /* |
| 597 | * This structure holds an RPS map which can be of variable length. The |
| 598 | * map is an array of CPUs. |
| 599 | */ |
| 600 | struct rps_map { |
| 601 | unsigned int len; |
| 602 | struct rcu_head rcu; |
| 603 | u16 cpus[0]; |
| 604 | }; |
Eric Dumazet | 60b778c | 2011-12-24 06:56:49 +0000 | [diff] [blame] | 605 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + ((_num) * sizeof(u16))) |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 606 | |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 607 | /* |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 608 | * The rps_dev_flow structure contains the mapping of a flow to a CPU, the |
| 609 | * tail pointer for that CPU's input queue at the time of last enqueue, and |
| 610 | * a hardware filter index. |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 611 | */ |
| 612 | struct rps_dev_flow { |
| 613 | u16 cpu; |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 614 | u16 filter; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 615 | unsigned int last_qtail; |
| 616 | }; |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 617 | #define RPS_NO_FILTER 0xffff |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 618 | |
| 619 | /* |
| 620 | * The rps_dev_flow_table structure contains a table of flow mappings. |
| 621 | */ |
| 622 | struct rps_dev_flow_table { |
| 623 | unsigned int mask; |
| 624 | struct rcu_head rcu; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 625 | struct rps_dev_flow flows[0]; |
| 626 | }; |
| 627 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ |
Eric Dumazet | 60b778c | 2011-12-24 06:56:49 +0000 | [diff] [blame] | 628 | ((_num) * sizeof(struct rps_dev_flow))) |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 629 | |
| 630 | /* |
| 631 | * The rps_sock_flow_table contains mappings of flows to the last CPU |
| 632 | * on which they were processed by the application (set in recvmsg). |
| 633 | */ |
| 634 | struct rps_sock_flow_table { |
| 635 | unsigned int mask; |
| 636 | u16 ents[0]; |
| 637 | }; |
| 638 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_sock_flow_table) + \ |
Eric Dumazet | 60b778c | 2011-12-24 06:56:49 +0000 | [diff] [blame] | 639 | ((_num) * sizeof(u16))) |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 640 | |
| 641 | #define RPS_NO_CPU 0xffff |
| 642 | |
| 643 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, |
| 644 | u32 hash) |
| 645 | { |
| 646 | if (table && hash) { |
| 647 | unsigned int cpu, index = hash & table->mask; |
| 648 | |
| 649 | /* We only give a hint, preemption can change cpu under us */ |
| 650 | cpu = raw_smp_processor_id(); |
| 651 | |
| 652 | if (table->ents[index] != cpu) |
| 653 | table->ents[index] = cpu; |
| 654 | } |
| 655 | } |
| 656 | |
| 657 | static inline void rps_reset_sock_flow(struct rps_sock_flow_table *table, |
| 658 | u32 hash) |
| 659 | { |
| 660 | if (table && hash) |
| 661 | table->ents[hash & table->mask] = RPS_NO_CPU; |
| 662 | } |
| 663 | |
Eric Dumazet | 6e3f7fa | 2010-10-25 03:02:02 +0000 | [diff] [blame] | 664 | extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 665 | |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 666 | #ifdef CONFIG_RFS_ACCEL |
| 667 | extern bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, |
| 668 | u32 flow_id, u16 filter_id); |
| 669 | #endif |
| 670 | |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 671 | /* This structure contains an instance of an RX queue. */ |
| 672 | struct netdev_rx_queue { |
Eric Dumazet | 6e3f7fa | 2010-10-25 03:02:02 +0000 | [diff] [blame] | 673 | struct rps_map __rcu *rps_map; |
| 674 | struct rps_dev_flow_table __rcu *rps_flow_table; |
| 675 | struct kobject kobj; |
Tom Herbert | fe82224 | 2010-11-09 10:47:38 +0000 | [diff] [blame] | 676 | struct net_device *dev; |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 677 | } ____cacheline_aligned_in_smp; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 678 | #endif /* CONFIG_RPS */ |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 679 | |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 680 | #ifdef CONFIG_XPS |
| 681 | /* |
| 682 | * This structure holds an XPS map which can be of variable length. The |
| 683 | * map is an array of queues. |
| 684 | */ |
| 685 | struct xps_map { |
| 686 | unsigned int len; |
| 687 | unsigned int alloc_len; |
| 688 | struct rcu_head rcu; |
| 689 | u16 queues[0]; |
| 690 | }; |
Eric Dumazet | 60b778c | 2011-12-24 06:56:49 +0000 | [diff] [blame] | 691 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + ((_num) * sizeof(u16))) |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 692 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_BYTES - sizeof(struct xps_map)) \ |
| 693 | / sizeof(u16)) |
| 694 | |
| 695 | /* |
| 696 | * This structure holds all XPS maps for device. Maps are indexed by CPU. |
| 697 | */ |
| 698 | struct xps_dev_maps { |
| 699 | struct rcu_head rcu; |
Eric Dumazet | a417786 | 2010-11-28 21:43:02 +0000 | [diff] [blame] | 700 | struct xps_map __rcu *cpu_map[0]; |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 701 | }; |
| 702 | #define XPS_DEV_MAPS_SIZE (sizeof(struct xps_dev_maps) + \ |
| 703 | (nr_cpu_ids * sizeof(struct xps_map *))) |
| 704 | #endif /* CONFIG_XPS */ |
| 705 | |
John Fastabend | 4f57c08 | 2011-01-17 08:06:04 +0000 | [diff] [blame] | 706 | #define TC_MAX_QUEUE 16 |
| 707 | #define TC_BITMASK 15 |
| 708 | /* HW offloaded queuing disciplines txq count and offset maps */ |
| 709 | struct netdev_tc_txq { |
| 710 | u16 count; |
| 711 | u16 offset; |
| 712 | }; |
| 713 | |
Neerav Parikh | 68bad94 | 2012-01-04 20:23:39 +0000 | [diff] [blame] | 714 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
| 715 | /* |
| 716 | * This structure is to hold information about the device |
| 717 | * configured to run FCoE protocol stack. |
| 718 | */ |
| 719 | struct netdev_fcoe_hbainfo { |
| 720 | char manufacturer[64]; |
| 721 | char serial_number[64]; |
| 722 | char hardware_version[64]; |
| 723 | char driver_version[64]; |
| 724 | char optionrom_version[64]; |
| 725 | char firmware_version[64]; |
| 726 | char model[256]; |
| 727 | char model_description[256]; |
| 728 | }; |
| 729 | #endif |
| 730 | |
Jiri Pirko | 66b52b0 | 2013-07-29 18:16:49 +0200 | [diff] [blame] | 731 | #define MAX_PHYS_PORT_ID_LEN 32 |
| 732 | |
| 733 | /* This structure holds a unique identifier to identify the |
| 734 | * physical port used by a netdevice. |
| 735 | */ |
| 736 | struct netdev_phys_port_id { |
| 737 | unsigned char id[MAX_PHYS_PORT_ID_LEN]; |
| 738 | unsigned char id_len; |
| 739 | }; |
| 740 | |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 741 | /* |
| 742 | * This structure defines the management hooks for network devices. |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 743 | * The following hooks can be defined; unless noted otherwise, they are |
| 744 | * optional and can be filled with a null pointer. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 745 | * |
| 746 | * int (*ndo_init)(struct net_device *dev); |
| 747 | * This function is called once when network device is registered. |
| 748 | * The network device can use this to any late stage initializaton |
| 749 | * or semantic validattion. It can fail with an error code which will |
| 750 | * be propogated back to register_netdev |
| 751 | * |
| 752 | * void (*ndo_uninit)(struct net_device *dev); |
| 753 | * This function is called when device is unregistered or when registration |
| 754 | * fails. It is not called if init fails. |
| 755 | * |
| 756 | * int (*ndo_open)(struct net_device *dev); |
| 757 | * This function is called when network device transistions to the up |
| 758 | * state. |
| 759 | * |
| 760 | * int (*ndo_stop)(struct net_device *dev); |
| 761 | * This function is called when network device transistions to the down |
| 762 | * state. |
| 763 | * |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 764 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
| 765 | * struct net_device *dev); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 766 | * Called when a packet needs to be transmitted. |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 767 | * Must return NETDEV_TX_OK , NETDEV_TX_BUSY. |
| 768 | * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX) |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 769 | * Required can not be NULL. |
| 770 | * |
| 771 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb); |
| 772 | * Called to decide which queue to when device supports multiple |
| 773 | * transmit queues. |
| 774 | * |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 775 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
| 776 | * This function is called to allow device receiver to make |
| 777 | * changes to configuration when multicast or promiscious is enabled. |
| 778 | * |
| 779 | * void (*ndo_set_rx_mode)(struct net_device *dev); |
| 780 | * This function is called device changes address list filtering. |
Jiri Pirko | 0178934 | 2011-08-16 06:29:00 +0000 | [diff] [blame] | 781 | * If driver handles unicast address filtering, it should set |
| 782 | * IFF_UNICAST_FLT to its priv_flags. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 783 | * |
| 784 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); |
| 785 | * This function is called when the Media Access Control address |
Mike Rapoport | 37b607c | 2009-04-27 05:45:54 -0700 | [diff] [blame] | 786 | * needs to be changed. If this interface is not defined, the |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 787 | * mac address can not be changed. |
| 788 | * |
| 789 | * int (*ndo_validate_addr)(struct net_device *dev); |
| 790 | * Test if Media Access Control address is valid for the device. |
| 791 | * |
| 792 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); |
| 793 | * Called when a user request an ioctl which can't be handled by |
| 794 | * the generic interface code. If not defined ioctl's return |
| 795 | * not supported error code. |
| 796 | * |
| 797 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); |
| 798 | * Used to set network devices bus interface parameters. This interface |
| 799 | * is retained for legacy reason, new devices should use the bus |
| 800 | * interface (PCI) for low level management. |
| 801 | * |
| 802 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); |
| 803 | * Called when a user wants to change the Maximum Transfer Unit |
| 804 | * of a device. If not defined, any request to change MTU will |
| 805 | * will return an error. |
| 806 | * |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 807 | * void (*ndo_tx_timeout)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 808 | * Callback uses when the transmitter has not made any progress |
| 809 | * for dev->watchdog ticks. |
| 810 | * |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 811 | * struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 812 | * struct rtnl_link_stats64 *storage); |
Wolfram Sang | d308e38 | 2009-10-07 13:53:11 -0700 | [diff] [blame] | 813 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 814 | * Called when a user wants to get the network device usage |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 815 | * statistics. Drivers must do one of the following: |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 816 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
| 817 | * rtnl_link_stats64 structure passed by the caller. |
Ben Hutchings | 82695d9 | 2010-06-15 15:08:48 -0700 | [diff] [blame] | 818 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 819 | * (which should normally be dev->stats) and return a pointer to |
| 820 | * it. The structure may be changed asynchronously only if each |
| 821 | * field is written atomically. |
| 822 | * 3. Update dev->stats asynchronously and atomically, and define |
| 823 | * neither operation. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 824 | * |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 825 | * int (*ndo_vlan_rx_add_vid)(struct net_device *dev, __be16 proto, u16t vid); |
| 826 | * If device support VLAN filtering this function is called when a |
| 827 | * VLAN id is registered. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 828 | * |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 829 | * int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid); |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 830 | * If device support VLAN filtering this function is called when a |
| 831 | * VLAN id is unregistered. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 832 | * |
| 833 | * void (*ndo_poll_controller)(struct net_device *dev); |
Williams, Mitch A | 95c26df | 2010-02-10 01:43:46 +0000 | [diff] [blame] | 834 | * |
| 835 | * SR-IOV management functions. |
| 836 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); |
| 837 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos); |
| 838 | * int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate); |
Greg Rose | 5f8444a | 2011-10-08 03:05:24 +0000 | [diff] [blame] | 839 | * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting); |
Williams, Mitch A | 95c26df | 2010-02-10 01:43:46 +0000 | [diff] [blame] | 840 | * int (*ndo_get_vf_config)(struct net_device *dev, |
| 841 | * int vf, struct ifla_vf_info *ivf); |
Rony Efraim | 1d8faf4 | 2013-06-13 13:19:10 +0300 | [diff] [blame] | 842 | * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state); |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 843 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
| 844 | * struct nlattr *port[]); |
| 845 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); |
John Fastabend | 4f57c08 | 2011-01-17 08:06:04 +0000 | [diff] [blame] | 846 | * int (*ndo_setup_tc)(struct net_device *dev, u8 tc) |
| 847 | * Called to setup 'tc' number of traffic classes in the net device. This |
| 848 | * is always called from the stack with the rtnl lock held and netif tx |
| 849 | * queues stopped. This allows the netdevice to perform queue management |
| 850 | * safely. |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 851 | * |
Yi Zou | e9bce84 | 2011-03-09 08:48:03 +0000 | [diff] [blame] | 852 | * Fiber Channel over Ethernet (FCoE) offload functions. |
| 853 | * int (*ndo_fcoe_enable)(struct net_device *dev); |
| 854 | * Called when the FCoE protocol stack wants to start using LLD for FCoE |
| 855 | * so the underlying device can perform whatever needed configuration or |
| 856 | * initialization to support acceleration of FCoE traffic. |
| 857 | * |
| 858 | * int (*ndo_fcoe_disable)(struct net_device *dev); |
| 859 | * Called when the FCoE protocol stack wants to stop using LLD for FCoE |
| 860 | * so the underlying device can perform whatever needed clean-ups to |
| 861 | * stop supporting acceleration of FCoE traffic. |
| 862 | * |
| 863 | * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid, |
| 864 | * struct scatterlist *sgl, unsigned int sgc); |
| 865 | * Called when the FCoE Initiator wants to initialize an I/O that |
| 866 | * is a possible candidate for Direct Data Placement (DDP). The LLD can |
| 867 | * perform necessary setup and returns 1 to indicate the device is set up |
| 868 | * successfully to perform DDP on this I/O, otherwise this returns 0. |
| 869 | * |
| 870 | * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); |
| 871 | * Called when the FCoE Initiator/Target is done with the DDPed I/O as |
| 872 | * indicated by the FC exchange id 'xid', so the underlying device can |
| 873 | * clean up and reuse resources for later DDP requests. |
| 874 | * |
| 875 | * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid, |
| 876 | * struct scatterlist *sgl, unsigned int sgc); |
| 877 | * Called when the FCoE Target wants to initialize an I/O that |
| 878 | * is a possible candidate for Direct Data Placement (DDP). The LLD can |
| 879 | * perform necessary setup and returns 1 to indicate the device is set up |
| 880 | * successfully to perform DDP on this I/O, otherwise this returns 0. |
| 881 | * |
Neerav Parikh | 68bad94 | 2012-01-04 20:23:39 +0000 | [diff] [blame] | 882 | * int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
| 883 | * struct netdev_fcoe_hbainfo *hbainfo); |
| 884 | * Called when the FCoE Protocol stack wants information on the underlying |
| 885 | * device. This information is utilized by the FCoE protocol stack to |
| 886 | * register attributes with Fiber Channel management service as per the |
| 887 | * FC-GS Fabric Device Management Information(FDMI) specification. |
| 888 | * |
Yi Zou | e9bce84 | 2011-03-09 08:48:03 +0000 | [diff] [blame] | 889 | * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); |
| 890 | * Called when the underlying device wants to override default World Wide |
| 891 | * Name (WWN) generation mechanism in FCoE protocol stack to pass its own |
| 892 | * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE |
| 893 | * protocol stack to use. |
| 894 | * |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 895 | * RFS acceleration. |
| 896 | * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, |
| 897 | * u16 rxq_index, u32 flow_id); |
| 898 | * Set hardware filter for RFS. rxq_index is the target queue index; |
| 899 | * flow_id is a flow ID to be passed to rps_may_expire_flow() later. |
| 900 | * Return the filter ID on success, or a negative error code. |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 901 | * |
Jiri Pirko | 8b98a70 | 2013-01-03 22:49:02 +0000 | [diff] [blame] | 902 | * Slave management functions (for bridge, bonding, etc). |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 903 | * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); |
| 904 | * Called to make another netdev an underling. |
| 905 | * |
| 906 | * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); |
| 907 | * Called to release previously enslaved netdev. |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 908 | * |
| 909 | * Feature/offload setting functions. |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 910 | * netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
| 911 | * netdev_features_t features); |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 912 | * Adjusts the requested feature flags according to device-specific |
| 913 | * constraints, and returns the resulting flags. Must not modify |
| 914 | * the device state. |
| 915 | * |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 916 | * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 917 | * Called to update device configuration to new features. Passed |
| 918 | * feature set might be less than what was returned by ndo_fix_features()). |
| 919 | * Must return >0 or -errno if it changed dev->features itself. |
| 920 | * |
stephen hemminger | edc7d57 | 2012-10-01 12:32:33 +0000 | [diff] [blame] | 921 | * int (*ndo_fdb_add)(struct ndmsg *ndm, struct nlattr *tb[], |
| 922 | * struct net_device *dev, |
stephen hemminger | 6b6e272 | 2012-09-17 10:03:26 +0000 | [diff] [blame] | 923 | * const unsigned char *addr, u16 flags) |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 924 | * Adds an FDB entry to dev for addr. |
Vlad Yasevich | 1690be6 | 2013-02-13 12:00:18 +0000 | [diff] [blame] | 925 | * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[], |
| 926 | * struct net_device *dev, |
stephen hemminger | 6b6e272 | 2012-09-17 10:03:26 +0000 | [diff] [blame] | 927 | * const unsigned char *addr) |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 928 | * Deletes the FDB entry from dev coresponding to addr. |
| 929 | * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb, |
| 930 | * struct net_device *dev, int idx) |
| 931 | * Used to add FDB entries to dump requests. Implementers should add |
| 932 | * entries to skb and update idx with the number of entries. |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 933 | * |
| 934 | * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh) |
| 935 | * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, |
Dmitry Kravkov | 24f11a5 | 2013-03-27 06:54:00 +0000 | [diff] [blame] | 936 | * struct net_device *dev, u32 filter_mask) |
Jiri Pirko | 4bf84c3 | 2012-12-27 23:49:37 +0000 | [diff] [blame] | 937 | * |
| 938 | * int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier); |
| 939 | * Called to change device carrier. Soft-devices (like dummy, team, etc) |
| 940 | * which do not represent real hardware may define this to allow their |
| 941 | * userspace components to manage their virtual carrier state. Devices |
| 942 | * that determine carrier state from physical hardware properties (eg |
| 943 | * network cables) or protocol-dependent mechanisms (eg |
| 944 | * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function. |
Jiri Pirko | 66b52b0 | 2013-07-29 18:16:49 +0200 | [diff] [blame] | 945 | * |
| 946 | * int (*ndo_get_phys_port_id)(struct net_device *dev, |
| 947 | * struct netdev_phys_port_id *ppid); |
| 948 | * Called to get ID of physical port of this device. If driver does |
| 949 | * not implement this, it is assumed that the hw is not able to have |
| 950 | * multiple net devices on single physical port. |
Joseph Gasparakis | 53cf5275 | 2013-09-04 02:13:38 -0700 | [diff] [blame] | 951 | * |
| 952 | * void (*ndo_add_vxlan_port)(struct net_device *dev, |
| 953 | * sa_family_t sa_family, __u16 port); |
| 954 | * Called by vxlan to notiy a driver about the UDP port and socket |
| 955 | * address family that vxlan is listnening to. It is called only when |
| 956 | * a new port starts listening. The operation is protected by the |
| 957 | * vxlan_net->sock_lock. |
| 958 | * |
| 959 | * void (*ndo_del_vxlan_port)(struct net_device *dev, |
| 960 | * sa_family_t sa_family, __u16 port); |
| 961 | * Called by vxlan to notify the driver about a UDP port and socket |
| 962 | * address family that vxlan is not listening to anymore. The operation |
| 963 | * is protected by the vxlan_net->sock_lock. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 964 | */ |
| 965 | struct net_device_ops { |
| 966 | int (*ndo_init)(struct net_device *dev); |
| 967 | void (*ndo_uninit)(struct net_device *dev); |
| 968 | int (*ndo_open)(struct net_device *dev); |
| 969 | int (*ndo_stop)(struct net_device *dev); |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 970 | netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 971 | struct net_device *dev); |
| 972 | u16 (*ndo_select_queue)(struct net_device *dev, |
| 973 | struct sk_buff *skb); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 974 | void (*ndo_change_rx_flags)(struct net_device *dev, |
| 975 | int flags); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 976 | void (*ndo_set_rx_mode)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 977 | int (*ndo_set_mac_address)(struct net_device *dev, |
| 978 | void *addr); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 979 | int (*ndo_validate_addr)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 980 | int (*ndo_do_ioctl)(struct net_device *dev, |
| 981 | struct ifreq *ifr, int cmd); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 982 | int (*ndo_set_config)(struct net_device *dev, |
| 983 | struct ifmap *map); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 984 | int (*ndo_change_mtu)(struct net_device *dev, |
| 985 | int new_mtu); |
| 986 | int (*ndo_neigh_setup)(struct net_device *dev, |
| 987 | struct neigh_parms *); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 988 | void (*ndo_tx_timeout) (struct net_device *dev); |
| 989 | |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 990 | struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
| 991 | struct rtnl_link_stats64 *storage); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 992 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
| 993 | |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 994 | int (*ndo_vlan_rx_add_vid)(struct net_device *dev, |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 995 | __be16 proto, u16 vid); |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 996 | int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 997 | __be16 proto, u16 vid); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 998 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 999 | void (*ndo_poll_controller)(struct net_device *dev); |
Herbert Xu | 4247e16 | 2010-06-10 16:12:47 +0000 | [diff] [blame] | 1000 | int (*ndo_netpoll_setup)(struct net_device *dev, |
Amerigo Wang | 47be03a2 | 2012-08-10 01:24:37 +0000 | [diff] [blame] | 1001 | struct netpoll_info *info, |
| 1002 | gfp_t gfp); |
WANG Cong | 0e34e93 | 2010-05-06 00:47:21 -0700 | [diff] [blame] | 1003 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1004 | #endif |
Cong Wang | e0d1095 | 2013-08-01 11:10:25 +0800 | [diff] [blame] | 1005 | #ifdef CONFIG_NET_RX_BUSY_POLL |
Eliezer Tamir | 8b80cda | 2013-07-10 17:13:26 +0300 | [diff] [blame] | 1006 | int (*ndo_busy_poll)(struct napi_struct *dev); |
Eliezer Tamir | 0602129 | 2013-06-10 11:39:50 +0300 | [diff] [blame] | 1007 | #endif |
Williams, Mitch A | 95c26df | 2010-02-10 01:43:46 +0000 | [diff] [blame] | 1008 | int (*ndo_set_vf_mac)(struct net_device *dev, |
| 1009 | int queue, u8 *mac); |
| 1010 | int (*ndo_set_vf_vlan)(struct net_device *dev, |
| 1011 | int queue, u16 vlan, u8 qos); |
| 1012 | int (*ndo_set_vf_tx_rate)(struct net_device *dev, |
| 1013 | int vf, int rate); |
Greg Rose | 5f8444a | 2011-10-08 03:05:24 +0000 | [diff] [blame] | 1014 | int (*ndo_set_vf_spoofchk)(struct net_device *dev, |
| 1015 | int vf, bool setting); |
Williams, Mitch A | 95c26df | 2010-02-10 01:43:46 +0000 | [diff] [blame] | 1016 | int (*ndo_get_vf_config)(struct net_device *dev, |
| 1017 | int vf, |
| 1018 | struct ifla_vf_info *ivf); |
Rony Efraim | 1d8faf4 | 2013-06-13 13:19:10 +0300 | [diff] [blame] | 1019 | int (*ndo_set_vf_link_state)(struct net_device *dev, |
| 1020 | int vf, int link_state); |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 1021 | int (*ndo_set_vf_port)(struct net_device *dev, |
| 1022 | int vf, |
| 1023 | struct nlattr *port[]); |
| 1024 | int (*ndo_get_vf_port)(struct net_device *dev, |
| 1025 | int vf, struct sk_buff *skb); |
John Fastabend | 4f57c08 | 2011-01-17 08:06:04 +0000 | [diff] [blame] | 1026 | int (*ndo_setup_tc)(struct net_device *dev, u8 tc); |
Ben Hutchings | d11ead7 | 2011-11-25 14:40:26 +0000 | [diff] [blame] | 1027 | #if IS_ENABLED(CONFIG_FCOE) |
Yi Zou | cb45439 | 2009-08-31 12:31:36 +0000 | [diff] [blame] | 1028 | int (*ndo_fcoe_enable)(struct net_device *dev); |
| 1029 | int (*ndo_fcoe_disable)(struct net_device *dev); |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 1030 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
| 1031 | u16 xid, |
| 1032 | struct scatterlist *sgl, |
| 1033 | unsigned int sgc); |
| 1034 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, |
| 1035 | u16 xid); |
Yi Zou | 6247e08 | 2011-02-01 07:22:06 +0000 | [diff] [blame] | 1036 | int (*ndo_fcoe_ddp_target)(struct net_device *dev, |
| 1037 | u16 xid, |
| 1038 | struct scatterlist *sgl, |
| 1039 | unsigned int sgc); |
Neerav Parikh | 68bad94 | 2012-01-04 20:23:39 +0000 | [diff] [blame] | 1040 | int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
| 1041 | struct netdev_fcoe_hbainfo *hbainfo); |
Bhanu Prakash Gollapudi | 3c9c36bc | 2011-08-26 09:45:41 +0000 | [diff] [blame] | 1042 | #endif |
| 1043 | |
Ben Hutchings | d11ead7 | 2011-11-25 14:40:26 +0000 | [diff] [blame] | 1044 | #if IS_ENABLED(CONFIG_LIBFCOE) |
Yi Zou | df5c794 | 2009-10-28 18:24:35 +0000 | [diff] [blame] | 1045 | #define NETDEV_FCOE_WWNN 0 |
| 1046 | #define NETDEV_FCOE_WWPN 1 |
| 1047 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, |
| 1048 | u64 *wwn, int type); |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 1049 | #endif |
Bhanu Prakash Gollapudi | 3c9c36bc | 2011-08-26 09:45:41 +0000 | [diff] [blame] | 1050 | |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 1051 | #ifdef CONFIG_RFS_ACCEL |
| 1052 | int (*ndo_rx_flow_steer)(struct net_device *dev, |
| 1053 | const struct sk_buff *skb, |
| 1054 | u16 rxq_index, |
| 1055 | u32 flow_id); |
| 1056 | #endif |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 1057 | int (*ndo_add_slave)(struct net_device *dev, |
| 1058 | struct net_device *slave_dev); |
| 1059 | int (*ndo_del_slave)(struct net_device *dev, |
| 1060 | struct net_device *slave_dev); |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1061 | netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
| 1062 | netdev_features_t features); |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 1063 | int (*ndo_set_features)(struct net_device *dev, |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1064 | netdev_features_t features); |
David Miller | da6a8fa | 2011-07-25 00:01:38 +0000 | [diff] [blame] | 1065 | int (*ndo_neigh_construct)(struct neighbour *n); |
David S. Miller | 447f219 | 2011-12-19 15:04:41 -0500 | [diff] [blame] | 1066 | void (*ndo_neigh_destroy)(struct neighbour *n); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 1067 | |
| 1068 | int (*ndo_fdb_add)(struct ndmsg *ndm, |
stephen hemminger | edc7d57 | 2012-10-01 12:32:33 +0000 | [diff] [blame] | 1069 | struct nlattr *tb[], |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 1070 | struct net_device *dev, |
stephen hemminger | 6b6e272 | 2012-09-17 10:03:26 +0000 | [diff] [blame] | 1071 | const unsigned char *addr, |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 1072 | u16 flags); |
| 1073 | int (*ndo_fdb_del)(struct ndmsg *ndm, |
Vlad Yasevich | 1690be6 | 2013-02-13 12:00:18 +0000 | [diff] [blame] | 1074 | struct nlattr *tb[], |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 1075 | struct net_device *dev, |
stephen hemminger | 6b6e272 | 2012-09-17 10:03:26 +0000 | [diff] [blame] | 1076 | const unsigned char *addr); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 1077 | int (*ndo_fdb_dump)(struct sk_buff *skb, |
| 1078 | struct netlink_callback *cb, |
| 1079 | struct net_device *dev, |
| 1080 | int idx); |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 1081 | |
| 1082 | int (*ndo_bridge_setlink)(struct net_device *dev, |
| 1083 | struct nlmsghdr *nlh); |
| 1084 | int (*ndo_bridge_getlink)(struct sk_buff *skb, |
| 1085 | u32 pid, u32 seq, |
Vlad Yasevich | 6cbdcee | 2013-02-13 12:00:13 +0000 | [diff] [blame] | 1086 | struct net_device *dev, |
| 1087 | u32 filter_mask); |
Vlad Yasevich | 407af32 | 2013-02-13 12:00:12 +0000 | [diff] [blame] | 1088 | int (*ndo_bridge_dellink)(struct net_device *dev, |
| 1089 | struct nlmsghdr *nlh); |
Jiri Pirko | 4bf84c3 | 2012-12-27 23:49:37 +0000 | [diff] [blame] | 1090 | int (*ndo_change_carrier)(struct net_device *dev, |
| 1091 | bool new_carrier); |
Jiri Pirko | 66b52b0 | 2013-07-29 18:16:49 +0200 | [diff] [blame] | 1092 | int (*ndo_get_phys_port_id)(struct net_device *dev, |
| 1093 | struct netdev_phys_port_id *ppid); |
Joseph Gasparakis | 53cf5275 | 2013-09-04 02:13:38 -0700 | [diff] [blame] | 1094 | void (*ndo_add_vxlan_port)(struct net_device *dev, |
| 1095 | sa_family_t sa_family, |
| 1096 | __u16 port); |
| 1097 | void (*ndo_del_vxlan_port)(struct net_device *dev, |
| 1098 | sa_family_t sa_family, |
| 1099 | __u16 port); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1100 | }; |
| 1101 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1102 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | * The DEVICE structure. |
| 1104 | * Actually, this whole structure is a big mistake. It mixes I/O |
| 1105 | * data with strictly "high-level" data, and it has to know about |
| 1106 | * almost every data structure used in the INET module. |
| 1107 | * |
| 1108 | * FIXME: cleanup struct net_device such that network protocol info |
| 1109 | * moves out. |
| 1110 | */ |
| 1111 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 1112 | struct net_device { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | |
| 1114 | /* |
| 1115 | * This is the first field of the "visible" part of this structure |
| 1116 | * (i.e. as seen by users in the "Space.c" file). It is the name |
Justin P. Mattock | 724df61 | 2010-05-26 09:22:40 -0700 | [diff] [blame] | 1117 | * of the interface. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | */ |
| 1119 | char name[IFNAMSIZ]; |
Mark Gross | ed77134 | 2010-05-06 01:59:26 +0200 | [diff] [blame] | 1120 | |
Eric Dumazet | 9136461 | 2012-06-11 06:36:13 +0000 | [diff] [blame] | 1121 | /* device name hash chain, please keep it close to name[] */ |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1122 | struct hlist_node name_hlist; |
Eric Dumazet | 9136461 | 2012-06-11 06:36:13 +0000 | [diff] [blame] | 1123 | |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 1124 | /* snmp alias */ |
| 1125 | char *ifalias; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | |
| 1127 | /* |
| 1128 | * I/O specific fields |
| 1129 | * FIXME: Merge these and struct ifmap into one |
| 1130 | */ |
| 1131 | unsigned long mem_end; /* shared mem end */ |
| 1132 | unsigned long mem_start; /* shared mem start */ |
| 1133 | unsigned long base_addr; /* device I/O address */ |
| 1134 | unsigned int irq; /* device IRQ number */ |
| 1135 | |
| 1136 | /* |
| 1137 | * Some hardware also needs these fields, but they are not |
| 1138 | * part of the usual set specified in Space.c. |
| 1139 | */ |
| 1140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | unsigned long state; |
| 1142 | |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 1143 | struct list_head dev_list; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1144 | struct list_head napi_list; |
Eric Dumazet | 44a0873 | 2009-10-27 07:03:04 +0000 | [diff] [blame] | 1145 | struct list_head unreg_list; |
Eric Dumazet | 4c3d5e7 | 2013-03-30 06:31:03 +0000 | [diff] [blame] | 1146 | struct list_head upper_dev_list; /* List of upper devices */ |
Veaceslav Falico | 5d26191 | 2013-08-28 23:25:05 +0200 | [diff] [blame] | 1147 | struct list_head lower_dev_list; |
Eric Dumazet | 4c3d5e7 | 2013-03-30 06:31:03 +0000 | [diff] [blame] | 1148 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 1150 | /* currently active device features */ |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1151 | netdev_features_t features; |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 1152 | /* user-changeable features */ |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1153 | netdev_features_t hw_features; |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 1154 | /* user-requested features */ |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1155 | netdev_features_t wanted_features; |
Michał Mirosław | 1aac626 | 2011-04-12 04:07:39 +0000 | [diff] [blame] | 1156 | /* mask of features inheritable by VLAN devices */ |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1157 | netdev_features_t vlan_features; |
Joseph Gasparakis | 6a674e9 | 2012-12-07 14:14:14 +0000 | [diff] [blame] | 1158 | /* mask of features inherited by encapsulating devices |
| 1159 | * This field indicates what encapsulation offloads |
| 1160 | * the hardware is capable of doing, and drivers will |
| 1161 | * need to set them appropriately. |
| 1162 | */ |
| 1163 | netdev_features_t hw_enc_features; |
Simon Horman | 0d89d20 | 2013-05-23 21:02:52 +0000 | [diff] [blame] | 1164 | /* mask of fetures inheritable by MPLS */ |
| 1165 | netdev_features_t mpls_features; |
Michał Mirosław | 04ed3e7 | 2011-01-24 15:32:47 -0800 | [diff] [blame] | 1166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | /* Interface index. Unique device identifier */ |
| 1168 | int ifindex; |
| 1169 | int iflink; |
| 1170 | |
Rusty Russell | c45d286 | 2007-03-28 14:29:08 -0700 | [diff] [blame] | 1171 | struct net_device_stats stats; |
Eric Dumazet | caf586e | 2010-09-30 21:06:55 +0000 | [diff] [blame] | 1172 | atomic_long_t rx_dropped; /* dropped packets by core network |
| 1173 | * Do not use this in drivers. |
| 1174 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | |
Johannes Berg | b86e028 | 2007-04-26 20:48:23 -0700 | [diff] [blame] | 1176 | #ifdef CONFIG_WIRELESS_EXT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | /* List of functions to handle Wireless Extensions (instead of ioctl). |
| 1178 | * See <net/iw_handler.h> for details. Jean II */ |
| 1179 | const struct iw_handler_def * wireless_handlers; |
| 1180 | /* Instance data managed by the core of Wireless Extensions. */ |
| 1181 | struct iw_public_data * wireless_data; |
Johannes Berg | b86e028 | 2007-04-26 20:48:23 -0700 | [diff] [blame] | 1182 | #endif |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1183 | /* Management operations */ |
| 1184 | const struct net_device_ops *netdev_ops; |
Stephen Hemminger | 76fd859 | 2006-09-08 11:16:13 -0700 | [diff] [blame] | 1185 | const struct ethtool_ops *ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1187 | /* Hardware header description */ |
| 1188 | const struct header_ops *header_ops; |
| 1189 | |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1190 | unsigned int flags; /* interface flags (a la BSD) */ |
Ben Greear | 3bdc0eb | 2012-02-11 15:39:30 +0000 | [diff] [blame] | 1191 | unsigned int priv_flags; /* Like 'flags' but invisible to userspace. |
| 1192 | * See if.h for definitions. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | unsigned short gflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | unsigned short padded; /* How much padding added by alloc_netdev() */ |
| 1195 | |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1196 | unsigned char operstate; /* RFC2863 operstate */ |
| 1197 | unsigned char link_mode; /* mapping policy to operstate */ |
| 1198 | |
Joe Perches | bdc220d | 2011-05-09 17:42:46 +0000 | [diff] [blame] | 1199 | unsigned char if_port; /* Selectable AUI, TP,..*/ |
| 1200 | unsigned char dma; /* DMA channel */ |
| 1201 | |
David S. Miller | cd7b539 | 2010-05-02 22:27:59 -0700 | [diff] [blame] | 1202 | unsigned int mtu; /* interface MTU value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | unsigned short type; /* interface hardware type */ |
| 1204 | unsigned short hard_header_len; /* hardware hdr length */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 1206 | /* extra head- and tailroom the hardware may need, but not in all cases |
| 1207 | * can this be guaranteed, especially tailroom. Some cases also use |
| 1208 | * LL_MAX_HEADER instead to allocate the skb. |
| 1209 | */ |
| 1210 | unsigned short needed_headroom; |
| 1211 | unsigned short needed_tailroom; |
| 1212 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | /* Interface address info. */ |
Jon Wetzel | a6f9a70 | 2005-08-20 17:15:54 -0700 | [diff] [blame] | 1214 | unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ |
Stefan Assmann | c1f7942 | 2010-07-22 02:50:21 +0000 | [diff] [blame] | 1215 | unsigned char addr_assign_type; /* hw address assignment type */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | unsigned char addr_len; /* hardware address length */ |
David Miller | 596b9b6 | 2011-07-25 00:01:25 +0000 | [diff] [blame] | 1217 | unsigned char neigh_priv_len; |
Narendra K | dffebd2 | 2013-06-10 19:34:03 +0530 | [diff] [blame] | 1218 | unsigned short dev_id; /* Used to differentiate devices |
| 1219 | * that share the same link |
| 1220 | * layer address |
| 1221 | */ |
Jiri Pirko | ccffad25 | 2009-05-22 23:22:17 +0000 | [diff] [blame] | 1222 | spinlock_t addr_list_lock; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1223 | struct netdev_hw_addr_list uc; /* Unicast mac addresses */ |
| 1224 | struct netdev_hw_addr_list mc; /* Multicast mac addresses */ |
Eric Dumazet | 4c3d5e7 | 2013-03-30 06:31:03 +0000 | [diff] [blame] | 1225 | struct netdev_hw_addr_list dev_addrs; /* list of device |
| 1226 | * hw addresses |
| 1227 | */ |
| 1228 | #ifdef CONFIG_SYSFS |
| 1229 | struct kset *queues_kset; |
| 1230 | #endif |
| 1231 | |
Joe Perches | 2d348d1 | 2011-07-25 16:17:35 -0700 | [diff] [blame] | 1232 | bool uc_promisc; |
Wang Chen | 9d45abe | 2008-06-17 21:12:48 -0700 | [diff] [blame] | 1233 | unsigned int promiscuity; |
| 1234 | unsigned int allmulti; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | |
| 1237 | /* Protocol specific pointers */ |
Jesse Gross | 65ac6a5 | 2010-10-20 13:56:05 +0000 | [diff] [blame] | 1238 | |
Ben Hutchings | d11ead7 | 2011-11-25 14:40:26 +0000 | [diff] [blame] | 1239 | #if IS_ENABLED(CONFIG_VLAN_8021Q) |
Jiri Pirko | 5b9ea6e | 2011-12-08 04:11:18 +0000 | [diff] [blame] | 1240 | struct vlan_info __rcu *vlan_info; /* VLAN info */ |
Jesse Gross | 65ac6a5 | 2010-10-20 13:56:05 +0000 | [diff] [blame] | 1241 | #endif |
Ben Hutchings | 34a430d | 2011-11-25 14:38:38 +0000 | [diff] [blame] | 1242 | #if IS_ENABLED(CONFIG_NET_DSA) |
Ben Hutchings | cf50dcc | 2011-11-25 14:32:52 +0000 | [diff] [blame] | 1243 | struct dsa_switch_tree *dsa_ptr; /* dsa specific data */ |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 1244 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | void *atalk_ptr; /* AppleTalk link */ |
Eric Dumazet | 95ae6b2 | 2010-09-15 04:04:31 +0000 | [diff] [blame] | 1246 | struct in_device __rcu *ip_ptr; /* IPv4 specific data */ |
Eric Dumazet | fc766e4c | 2010-10-29 03:09:24 +0000 | [diff] [blame] | 1247 | struct dn_dev __rcu *dn_ptr; /* DECnet specific data */ |
Eric Dumazet | 198caec | 2010-10-24 21:32:05 +0000 | [diff] [blame] | 1248 | struct inet6_dev __rcu *ip6_ptr; /* IPv6 specific data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | void *ax25_ptr; /* AX.25 specific data */ |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 1250 | struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, |
| 1251 | assign before registering */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1253 | /* |
Eric Dumazet | cd13539 | 2010-09-16 02:58:13 +0000 | [diff] [blame] | 1254 | * Cache lines mostly used on receive path (including eth_type_trans()) |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1255 | */ |
Eric Dumazet | 4dc8913 | 2010-08-31 07:40:16 +0000 | [diff] [blame] | 1256 | unsigned long last_rx; /* Time of last Rx |
| 1257 | * This should not be set in |
| 1258 | * drivers, unless really needed, |
| 1259 | * because network stack (bonding) |
| 1260 | * use it if/when necessary, to |
| 1261 | * avoid dirtying this cache line. |
| 1262 | */ |
| 1263 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1264 | /* Interface address info used in eth_type_trans() */ |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 1265 | unsigned char *dev_addr; /* hw address, (before bcast |
| 1266 | because most packets are |
| 1267 | unicast) */ |
| 1268 | |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1269 | |
david decotigny | ccf5ff6 | 2011-11-16 12:15:10 +0000 | [diff] [blame] | 1270 | #ifdef CONFIG_RPS |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1271 | struct netdev_rx_queue *_rx; |
| 1272 | |
Ben Hutchings | 62fe0b4 | 2010-09-27 08:24:33 +0000 | [diff] [blame] | 1273 | /* Number of RX queues allocated at register_netdev() time */ |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1274 | unsigned int num_rx_queues; |
Ben Hutchings | 62fe0b4 | 2010-09-27 08:24:33 +0000 | [diff] [blame] | 1275 | |
| 1276 | /* Number of RX queues currently active in device */ |
| 1277 | unsigned int real_num_rx_queues; |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 1278 | |
Eric Dumazet | df33454 | 2010-03-24 19:13:54 +0000 | [diff] [blame] | 1279 | #endif |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1280 | |
stephen hemminger | 61391cd | 2010-11-15 06:38:12 +0000 | [diff] [blame] | 1281 | rx_handler_func_t __rcu *rx_handler; |
| 1282 | void __rcu *rx_handler_data; |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1283 | |
Eric Dumazet | 24824a0 | 2010-10-02 06:11:55 +0000 | [diff] [blame] | 1284 | struct netdev_queue __rcu *ingress_queue; |
Eric Dumazet | 4c3d5e7 | 2013-03-30 06:31:03 +0000 | [diff] [blame] | 1285 | unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ |
| 1286 | |
Eric Dumazet | cd13539 | 2010-09-16 02:58:13 +0000 | [diff] [blame] | 1287 | |
| 1288 | /* |
| 1289 | * Cache lines mostly used on transmit path |
| 1290 | */ |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1291 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1292 | |
| 1293 | /* Number of TX queues allocated at alloc_netdev_mq() time */ |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1294 | unsigned int num_tx_queues; |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1295 | |
| 1296 | /* Number of TX queues currently active in device */ |
| 1297 | unsigned int real_num_tx_queues; |
| 1298 | |
Patrick McHardy | af356af | 2009-09-04 06:41:18 +0000 | [diff] [blame] | 1299 | /* root qdisc from userspace point of view */ |
| 1300 | struct Qdisc *qdisc; |
| 1301 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | unsigned long tx_queue_len; /* Max frames per queue allowed */ |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1303 | spinlock_t tx_global_lock; |
Eric Dumazet | cd13539 | 2010-09-16 02:58:13 +0000 | [diff] [blame] | 1304 | |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 1305 | #ifdef CONFIG_XPS |
Eric Dumazet | a417786 | 2010-11-28 21:43:02 +0000 | [diff] [blame] | 1306 | struct xps_dev_maps __rcu *xps_maps; |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 1307 | #endif |
Eric Dumazet | 4c3d5e7 | 2013-03-30 06:31:03 +0000 | [diff] [blame] | 1308 | #ifdef CONFIG_RFS_ACCEL |
| 1309 | /* CPU reverse-mapping for RX completion interrupts, indexed |
| 1310 | * by RX queue number. Assigned by driver. This must only be |
| 1311 | * set if the ndo_rx_flow_steer operation is defined. */ |
| 1312 | struct cpu_rmap *rx_cpu_rmap; |
| 1313 | #endif |
Tom Herbert | 1d24eb4 | 2010-11-21 13:17:27 +0000 | [diff] [blame] | 1314 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1315 | /* These may be needed for future network-power-down code. */ |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 1316 | |
| 1317 | /* |
| 1318 | * trans_start here is expensive for high speed devices on SMP, |
| 1319 | * please use netdev_queue->trans_start instead. |
| 1320 | */ |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1321 | unsigned long trans_start; /* Time (in jiffies) of last Tx */ |
| 1322 | |
| 1323 | int watchdog_timeo; /* used by dev_watchdog() */ |
| 1324 | struct timer_list watchdog_timer; |
| 1325 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1326 | /* Number of references to this device */ |
Eric Dumazet | 29b4433 | 2010-10-11 10:22:12 +0000 | [diff] [blame] | 1327 | int __percpu *pcpu_refcnt; |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1328 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | /* delayed register/unregister */ |
| 1330 | struct list_head todo_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | /* device index hash chain */ |
| 1332 | struct hlist_node index_hlist; |
| 1333 | |
Eric Dumazet | e014deb | 2009-11-17 05:59:21 +0000 | [diff] [blame] | 1334 | struct list_head link_watch_list; |
Herbert Xu | 572a103 | 2007-05-08 18:34:17 -0700 | [diff] [blame] | 1335 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | /* register/unregister state machine */ |
| 1337 | enum { NETREG_UNINITIALIZED=0, |
Stephen Hemminger | b17a7c1 | 2006-05-10 13:21:17 -0700 | [diff] [blame] | 1338 | NETREG_REGISTERED, /* completed register_netdevice */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
| 1340 | NETREG_UNREGISTERED, /* completed unregister todo */ |
| 1341 | NETREG_RELEASED, /* called free_netdev */ |
Benjamin Herrenschmidt | 937f1ba | 2009-01-14 21:05:05 -0800 | [diff] [blame] | 1342 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
Eric Dumazet | 449f454 | 2011-05-19 12:24:16 +0000 | [diff] [blame] | 1343 | } reg_state:8; |
| 1344 | |
| 1345 | bool dismantle; /* device is going do be freed */ |
Patrick McHardy | a283576 | 2010-02-26 06:34:51 +0000 | [diff] [blame] | 1346 | |
| 1347 | enum { |
| 1348 | RTNL_LINK_INITIALIZED, |
| 1349 | RTNL_LINK_INITIALIZING, |
| 1350 | } rtnl_link_state:16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1352 | /* Called from unregister, can be used to call free_netdev */ |
| 1353 | void (*destructor)(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | #ifdef CONFIG_NETPOLL |
Cong Wang | 5fbee84 | 2013-01-22 21:29:39 +0000 | [diff] [blame] | 1356 | struct netpoll_info __rcu *npinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | #endif |
David S. Miller | eae792b | 2008-07-15 03:03:33 -0700 | [diff] [blame] | 1358 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1359 | #ifdef CONFIG_NET_NS |
Eric W. Biederman | 4a1c537 | 2007-09-12 11:56:32 +0200 | [diff] [blame] | 1360 | /* Network namespace this network device is inside */ |
| 1361 | struct net *nd_net; |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1362 | #endif |
Eric W. Biederman | 4a1c537 | 2007-09-12 11:56:32 +0200 | [diff] [blame] | 1363 | |
David S. Miller | 4951704 | 2008-05-12 03:29:11 -0700 | [diff] [blame] | 1364 | /* mid-layer private */ |
Eric Dumazet | a7855c7 | 2010-09-23 23:51:51 +0000 | [diff] [blame] | 1365 | union { |
| 1366 | void *ml_priv; |
| 1367 | struct pcpu_lstats __percpu *lstats; /* loopback stats */ |
Eric Dumazet | 290b895 | 2010-09-27 00:33:35 +0000 | [diff] [blame] | 1368 | struct pcpu_tstats __percpu *tstats; /* tunnel stats */ |
Eric Dumazet | 6d81f41 | 2010-09-27 20:50:33 +0000 | [diff] [blame] | 1369 | struct pcpu_dstats __percpu *dstats; /* dummy stats */ |
Eric Dumazet | 2681128 | 2012-12-29 16:02:43 +0000 | [diff] [blame] | 1370 | struct pcpu_vstats __percpu *vstats; /* veth stats */ |
Eric Dumazet | a7855c7 | 2010-09-23 23:51:51 +0000 | [diff] [blame] | 1371 | }; |
Patrick McHardy | eca9eba | 2008-07-05 21:26:13 -0700 | [diff] [blame] | 1372 | /* GARP */ |
Eric Dumazet | 3cc77ec | 2010-10-24 21:32:36 +0000 | [diff] [blame] | 1373 | struct garp_port __rcu *garp_port; |
David Ward | febf018 | 2013-02-08 17:17:06 +0000 | [diff] [blame] | 1374 | /* MRP */ |
| 1375 | struct mrp_port __rcu *mrp_port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | /* class/net/name entry */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1378 | struct device dev; |
Eric W. Biederman | 0c509a6 | 2009-10-29 14:18:21 +0000 | [diff] [blame] | 1379 | /* space for optional device, statistics, and wireless sysfs groups */ |
| 1380 | const struct attribute_group *sysfs_groups[4]; |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1381 | |
| 1382 | /* rtnetlink link ops */ |
| 1383 | const struct rtnl_link_ops *rtnl_link_ops; |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1384 | |
Peter P Waskiewicz Jr | 82cc1a7 | 2008-03-21 03:43:19 -0700 | [diff] [blame] | 1385 | /* for setting kernel sock attribute on TCP connection setup */ |
| 1386 | #define GSO_MAX_SIZE 65536 |
| 1387 | unsigned int gso_max_size; |
Ben Hutchings | 30b678d | 2012-07-30 15:57:00 +0000 | [diff] [blame] | 1388 | #define GSO_MAX_SEGS 65535 |
| 1389 | u16 gso_max_segs; |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1390 | |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 1391 | #ifdef CONFIG_DCB |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1392 | /* Data Center Bridging netlink ops */ |
Stephen Hemminger | 3295354 | 2009-10-05 06:01:03 +0000 | [diff] [blame] | 1393 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1394 | #endif |
John Fastabend | 4f57c08 | 2011-01-17 08:06:04 +0000 | [diff] [blame] | 1395 | u8 num_tc; |
| 1396 | struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE]; |
| 1397 | u8 prio_tc_map[TC_BITMASK + 1]; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1398 | |
Ben Hutchings | d11ead7 | 2011-11-25 14:40:26 +0000 | [diff] [blame] | 1399 | #if IS_ENABLED(CONFIG_FCOE) |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 1400 | /* max exchange id for FCoE LRO by ddp */ |
| 1401 | unsigned int fcoe_ddp_xid; |
| 1402 | #endif |
Neil Horman | 5bc1421 | 2011-11-22 05:10:51 +0000 | [diff] [blame] | 1403 | #if IS_ENABLED(CONFIG_NETPRIO_CGROUP) |
| 1404 | struct netprio_map __rcu *priomap; |
| 1405 | #endif |
Richard Cochran | c1f19b5 | 2010-07-17 08:49:36 +0000 | [diff] [blame] | 1406 | /* phy device may attach itself for hardware timestamping */ |
| 1407 | struct phy_device *phydev; |
Vlad Dogaru | cbda10f | 2011-01-13 23:38:30 +0000 | [diff] [blame] | 1408 | |
Eric Dumazet | 23d3b8b | 2012-09-05 01:02:56 +0000 | [diff] [blame] | 1409 | struct lock_class_key *qdisc_tx_busylock; |
| 1410 | |
Vlad Dogaru | cbda10f | 2011-01-13 23:38:30 +0000 | [diff] [blame] | 1411 | /* group the device belongs to */ |
| 1412 | int group; |
Eric Dumazet | 9136461 | 2012-06-11 06:36:13 +0000 | [diff] [blame] | 1413 | |
| 1414 | struct pm_qos_request pm_qos_req; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | }; |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1416 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | |
| 1418 | #define NETDEV_ALIGN 32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1420 | static inline |
John Fastabend | 4f57c08 | 2011-01-17 08:06:04 +0000 | [diff] [blame] | 1421 | int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio) |
| 1422 | { |
| 1423 | return dev->prio_tc_map[prio & TC_BITMASK]; |
| 1424 | } |
| 1425 | |
| 1426 | static inline |
| 1427 | int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc) |
| 1428 | { |
| 1429 | if (tc >= dev->num_tc) |
| 1430 | return -EINVAL; |
| 1431 | |
| 1432 | dev->prio_tc_map[prio & TC_BITMASK] = tc & TC_BITMASK; |
| 1433 | return 0; |
| 1434 | } |
| 1435 | |
| 1436 | static inline |
| 1437 | void netdev_reset_tc(struct net_device *dev) |
| 1438 | { |
| 1439 | dev->num_tc = 0; |
| 1440 | memset(dev->tc_to_txq, 0, sizeof(dev->tc_to_txq)); |
| 1441 | memset(dev->prio_tc_map, 0, sizeof(dev->prio_tc_map)); |
| 1442 | } |
| 1443 | |
| 1444 | static inline |
| 1445 | int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset) |
| 1446 | { |
| 1447 | if (tc >= dev->num_tc) |
| 1448 | return -EINVAL; |
| 1449 | |
| 1450 | dev->tc_to_txq[tc].count = count; |
| 1451 | dev->tc_to_txq[tc].offset = offset; |
| 1452 | return 0; |
| 1453 | } |
| 1454 | |
| 1455 | static inline |
| 1456 | int netdev_set_num_tc(struct net_device *dev, u8 num_tc) |
| 1457 | { |
| 1458 | if (num_tc > TC_MAX_QUEUE) |
| 1459 | return -EINVAL; |
| 1460 | |
| 1461 | dev->num_tc = num_tc; |
| 1462 | return 0; |
| 1463 | } |
| 1464 | |
| 1465 | static inline |
| 1466 | int netdev_get_num_tc(struct net_device *dev) |
| 1467 | { |
| 1468 | return dev->num_tc; |
| 1469 | } |
| 1470 | |
| 1471 | static inline |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1472 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, |
| 1473 | unsigned int index) |
| 1474 | { |
| 1475 | return &dev->_tx[index]; |
| 1476 | } |
| 1477 | |
| 1478 | static inline void netdev_for_each_tx_queue(struct net_device *dev, |
| 1479 | void (*f)(struct net_device *, |
| 1480 | struct netdev_queue *, |
| 1481 | void *), |
| 1482 | void *arg) |
| 1483 | { |
| 1484 | unsigned int i; |
| 1485 | |
| 1486 | for (i = 0; i < dev->num_tx_queues; i++) |
| 1487 | f(dev, &dev->_tx[i], arg); |
| 1488 | } |
| 1489 | |
Amerigo Wang | 8c4c49d | 2012-09-17 20:16:31 +0000 | [diff] [blame] | 1490 | extern struct netdev_queue *netdev_pick_tx(struct net_device *dev, |
| 1491 | struct sk_buff *skb); |
Alexander Duyck | 416186f | 2013-01-10 08:56:51 +0000 | [diff] [blame] | 1492 | extern u16 __netdev_pick_tx(struct net_device *dev, struct sk_buff *skb); |
Amerigo Wang | 8c4c49d | 2012-09-17 20:16:31 +0000 | [diff] [blame] | 1493 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1494 | /* |
| 1495 | * Net namespace inlines |
| 1496 | */ |
| 1497 | static inline |
| 1498 | struct net *dev_net(const struct net_device *dev) |
| 1499 | { |
Eric Dumazet | c2d9ba9 | 2010-06-01 06:51:19 +0000 | [diff] [blame] | 1500 | return read_pnet(&dev->nd_net); |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1501 | } |
| 1502 | |
| 1503 | static inline |
Denis V. Lunev | f5aa23f | 2008-03-26 00:48:17 -0700 | [diff] [blame] | 1504 | void dev_net_set(struct net_device *dev, struct net *net) |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1505 | { |
| 1506 | #ifdef CONFIG_NET_NS |
Denis V. Lunev | f3005d7 | 2008-04-16 02:02:18 -0700 | [diff] [blame] | 1507 | release_net(dev->nd_net); |
| 1508 | dev->nd_net = hold_net(net); |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1509 | #endif |
| 1510 | } |
| 1511 | |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 1512 | static inline bool netdev_uses_dsa_tags(struct net_device *dev) |
| 1513 | { |
| 1514 | #ifdef CONFIG_NET_DSA_TAG_DSA |
| 1515 | if (dev->dsa_ptr != NULL) |
| 1516 | return dsa_uses_dsa_tags(dev->dsa_ptr); |
| 1517 | #endif |
| 1518 | |
| 1519 | return 0; |
| 1520 | } |
| 1521 | |
Lennert Buytenhek | 396138f0 | 2008-10-07 13:46:07 +0000 | [diff] [blame] | 1522 | static inline bool netdev_uses_trailer_tags(struct net_device *dev) |
| 1523 | { |
| 1524 | #ifdef CONFIG_NET_DSA_TAG_TRAILER |
| 1525 | if (dev->dsa_ptr != NULL) |
| 1526 | return dsa_uses_trailer_tags(dev->dsa_ptr); |
| 1527 | #endif |
| 1528 | |
| 1529 | return 0; |
| 1530 | } |
| 1531 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1532 | /** |
| 1533 | * netdev_priv - access network device private data |
| 1534 | * @dev: network device |
| 1535 | * |
| 1536 | * Get network device private data |
| 1537 | */ |
Patrick McHardy | 6472ce6 | 2007-06-13 12:03:21 -0700 | [diff] [blame] | 1538 | static inline void *netdev_priv(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | { |
Eric Dumazet | 1ce8e7b | 2009-05-27 04:42:37 +0000 | [diff] [blame] | 1540 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | } |
| 1542 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | /* Set the sysfs physical device reference for the network logical device |
| 1544 | * if set prior to registration will cause a symlink during initialization. |
| 1545 | */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1546 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | |
Marcel Holtmann | 384912e | 2009-08-31 21:08:19 +0000 | [diff] [blame] | 1548 | /* Set the sysfs device type for the network logical device to allow |
| 1549 | * fin grained indentification of different network device types. For |
| 1550 | * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc. |
| 1551 | */ |
| 1552 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) |
| 1553 | |
Eric Dumazet | 82dc3c6 | 2013-03-05 15:57:22 +0000 | [diff] [blame] | 1554 | /* Default NAPI poll() weight |
| 1555 | * Device drivers are strongly advised to not use bigger value |
| 1556 | */ |
| 1557 | #define NAPI_POLL_WEIGHT 64 |
| 1558 | |
Stephen Hemminger | 3b582cc | 2007-11-01 02:21:47 -0700 | [diff] [blame] | 1559 | /** |
| 1560 | * netif_napi_add - initialize a napi context |
| 1561 | * @dev: network device |
| 1562 | * @napi: napi context |
| 1563 | * @poll: polling function |
| 1564 | * @weight: default weight |
| 1565 | * |
| 1566 | * netif_napi_add() must be used to initialize a napi context prior to calling |
| 1567 | * *any* of the other napi related functions. |
| 1568 | */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1569 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
| 1570 | int (*poll)(struct napi_struct *, int), int weight); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1571 | |
Alexander Duyck | d815653 | 2008-07-08 15:13:05 -0700 | [diff] [blame] | 1572 | /** |
| 1573 | * netif_napi_del - remove a napi context |
| 1574 | * @napi: napi context |
| 1575 | * |
| 1576 | * netif_napi_del() removes a napi context from the network device napi list |
| 1577 | */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1578 | void netif_napi_del(struct napi_struct *napi); |
| 1579 | |
| 1580 | struct napi_gro_cb { |
Herbert Xu | 78a478d | 2009-05-26 18:50:21 +0000 | [diff] [blame] | 1581 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
| 1582 | void *frag0; |
| 1583 | |
Herbert Xu | 7489594 | 2009-05-26 18:50:27 +0000 | [diff] [blame] | 1584 | /* Length of frag0. */ |
| 1585 | unsigned int frag0_len; |
| 1586 | |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1587 | /* This indicates where we are processing relative to skb->data. */ |
| 1588 | int data_offset; |
| 1589 | |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1590 | /* This is non-zero if the packet cannot be merged with the new skb. */ |
| 1591 | int flush; |
| 1592 | |
| 1593 | /* Number of segments aggregated. */ |
Eric Dumazet | 2e71a6f | 2012-10-06 08:08:49 +0000 | [diff] [blame] | 1594 | u16 count; |
| 1595 | |
| 1596 | /* This is non-zero if the packet may be of the same flow. */ |
| 1597 | u8 same_flow; |
Herbert Xu | 5d38a07 | 2009-01-04 16:13:40 -0800 | [diff] [blame] | 1598 | |
| 1599 | /* Free the skb? */ |
Eric Dumazet | 2e71a6f | 2012-10-06 08:08:49 +0000 | [diff] [blame] | 1600 | u8 free; |
Eric Dumazet | d7e8883 | 2012-04-30 08:10:34 +0000 | [diff] [blame] | 1601 | #define NAPI_GRO_FREE 1 |
| 1602 | #define NAPI_GRO_FREE_STOLEN_HEAD 2 |
Eric Dumazet | 2e71a6f | 2012-10-06 08:08:49 +0000 | [diff] [blame] | 1603 | |
| 1604 | /* jiffies when first packet was created/queued */ |
| 1605 | unsigned long age; |
Eric Dumazet | 8634724 | 2012-10-08 21:38:50 +0200 | [diff] [blame] | 1606 | |
| 1607 | /* Used in ipv6_gro_receive() */ |
| 1608 | int proto; |
Eric Dumazet | c3c7c25 | 2012-12-06 13:54:59 +0000 | [diff] [blame] | 1609 | |
| 1610 | /* used in skb_gro_receive() slow path */ |
| 1611 | struct sk_buff *last; |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1612 | }; |
| 1613 | |
| 1614 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) |
Alexander Duyck | d815653 | 2008-07-08 15:13:05 -0700 | [diff] [blame] | 1615 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | struct packet_type { |
David S. Miller | f2ccd8f | 2005-08-09 19:34:12 -0700 | [diff] [blame] | 1617 | __be16 type; /* This is really htons(ether_type). */ |
| 1618 | struct net_device *dev; /* NULL is wildcarded here */ |
| 1619 | int (*func) (struct sk_buff *, |
| 1620 | struct net_device *, |
| 1621 | struct packet_type *, |
| 1622 | struct net_device *); |
Eric Leblond | c0de08d | 2012-08-16 22:02:58 +0000 | [diff] [blame] | 1623 | bool (*id_match)(struct packet_type *ptype, |
| 1624 | struct sock *sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | void *af_packet_priv; |
| 1626 | struct list_head list; |
| 1627 | }; |
| 1628 | |
Vlad Yasevich | f191a1d | 2012-11-15 08:49:23 +0000 | [diff] [blame] | 1629 | struct offload_callbacks { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1630 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
| 1631 | netdev_features_t features); |
| 1632 | int (*gso_send_check)(struct sk_buff *skb); |
| 1633 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
| 1634 | struct sk_buff *skb); |
| 1635 | int (*gro_complete)(struct sk_buff *skb); |
Vlad Yasevich | f191a1d | 2012-11-15 08:49:23 +0000 | [diff] [blame] | 1636 | }; |
| 1637 | |
| 1638 | struct packet_offload { |
| 1639 | __be16 type; /* This is really htons(ether_type). */ |
| 1640 | struct offload_callbacks callbacks; |
| 1641 | struct list_head list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | }; |
| 1643 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1644 | #include <linux/notifier.h> |
| 1645 | |
Amerigo Wang | dcfe142 | 2011-07-25 17:13:09 -0700 | [diff] [blame] | 1646 | /* netdevice notifier chain. Please remember to update the rtnetlink |
| 1647 | * notification exclusion list in rtnetlink_event() when adding new |
| 1648 | * types. |
| 1649 | */ |
| 1650 | #define NETDEV_UP 0x0001 /* For now you can't veto a device up/down */ |
| 1651 | #define NETDEV_DOWN 0x0002 |
| 1652 | #define NETDEV_REBOOT 0x0003 /* Tell a protocol stack a network interface |
| 1653 | detected a hardware crash and restarted |
| 1654 | - we can use this eg to kick tcp sessions |
| 1655 | once done */ |
| 1656 | #define NETDEV_CHANGE 0x0004 /* Notify device state change */ |
| 1657 | #define NETDEV_REGISTER 0x0005 |
| 1658 | #define NETDEV_UNREGISTER 0x0006 |
| 1659 | #define NETDEV_CHANGEMTU 0x0007 |
| 1660 | #define NETDEV_CHANGEADDR 0x0008 |
| 1661 | #define NETDEV_GOING_DOWN 0x0009 |
| 1662 | #define NETDEV_CHANGENAME 0x000A |
| 1663 | #define NETDEV_FEAT_CHANGE 0x000B |
| 1664 | #define NETDEV_BONDING_FAILOVER 0x000C |
| 1665 | #define NETDEV_PRE_UP 0x000D |
| 1666 | #define NETDEV_PRE_TYPE_CHANGE 0x000E |
| 1667 | #define NETDEV_POST_TYPE_CHANGE 0x000F |
| 1668 | #define NETDEV_POST_INIT 0x0010 |
Eric Dumazet | 0115e8e | 2012-08-22 17:19:46 +0000 | [diff] [blame] | 1669 | #define NETDEV_UNREGISTER_FINAL 0x0011 |
Amerigo Wang | dcfe142 | 2011-07-25 17:13:09 -0700 | [diff] [blame] | 1670 | #define NETDEV_RELEASE 0x0012 |
| 1671 | #define NETDEV_NOTIFY_PEERS 0x0013 |
| 1672 | #define NETDEV_JOIN 0x0014 |
Jiri Pirko | 42e52bf | 2013-05-25 04:12:10 +0000 | [diff] [blame] | 1673 | #define NETDEV_CHANGEUPPER 0x0015 |
Jiri Pirko | 4aa5dee | 2013-07-20 12:13:53 +0200 | [diff] [blame] | 1674 | #define NETDEV_RESEND_IGMP 0x0016 |
Amerigo Wang | dcfe142 | 2011-07-25 17:13:09 -0700 | [diff] [blame] | 1675 | |
| 1676 | extern int register_netdevice_notifier(struct notifier_block *nb); |
| 1677 | extern int unregister_netdevice_notifier(struct notifier_block *nb); |
Jiri Pirko | 351638e | 2013-05-28 01:30:21 +0000 | [diff] [blame] | 1678 | |
| 1679 | struct netdev_notifier_info { |
| 1680 | struct net_device *dev; |
| 1681 | }; |
| 1682 | |
Jiri Pirko | be9efd3 | 2013-05-28 01:30:22 +0000 | [diff] [blame] | 1683 | struct netdev_notifier_change_info { |
| 1684 | struct netdev_notifier_info info; /* must be first */ |
| 1685 | unsigned int flags_changed; |
| 1686 | }; |
| 1687 | |
Cong Wang | 75538c2 | 2013-05-29 11:30:50 +0800 | [diff] [blame] | 1688 | static inline void netdev_notifier_info_init(struct netdev_notifier_info *info, |
| 1689 | struct net_device *dev) |
| 1690 | { |
| 1691 | info->dev = dev; |
| 1692 | } |
| 1693 | |
Jiri Pirko | 351638e | 2013-05-28 01:30:21 +0000 | [diff] [blame] | 1694 | static inline struct net_device * |
| 1695 | netdev_notifier_info_to_dev(const struct netdev_notifier_info *info) |
| 1696 | { |
| 1697 | return info->dev; |
| 1698 | } |
| 1699 | |
| 1700 | extern int call_netdevice_notifiers_info(unsigned long val, struct net_device *dev, |
| 1701 | struct netdev_notifier_info *info); |
Amerigo Wang | dcfe142 | 2011-07-25 17:13:09 -0700 | [diff] [blame] | 1702 | extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
| 1703 | |
| 1704 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | extern rwlock_t dev_base_lock; /* Device list lock */ |
| 1706 | |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1707 | #define for_each_netdev(net, d) \ |
| 1708 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) |
Eric W. Biederman | dcbccbd4 | 2009-11-29 22:25:26 +0000 | [diff] [blame] | 1709 | #define for_each_netdev_reverse(net, d) \ |
| 1710 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) |
Eric Dumazet | c6d14c8 | 2009-11-04 05:43:23 -0800 | [diff] [blame] | 1711 | #define for_each_netdev_rcu(net, d) \ |
| 1712 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1713 | #define for_each_netdev_safe(net, d, n) \ |
| 1714 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) |
| 1715 | #define for_each_netdev_continue(net, d) \ |
| 1716 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) |
stephen hemminger | 254245d | 2009-11-10 07:54:47 +0000 | [diff] [blame] | 1717 | #define for_each_netdev_continue_rcu(net, d) \ |
| 1718 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) |
nikolay@redhat.com | 8a7fbfa | 2013-03-12 02:49:01 +0000 | [diff] [blame] | 1719 | #define for_each_netdev_in_bond_rcu(bond, slave) \ |
| 1720 | for_each_netdev_rcu(&init_net, slave) \ |
| 1721 | if (netdev_master_upper_dev_get_rcu(slave) == bond) |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 1722 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
| 1723 | |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 1724 | static inline struct net_device *next_net_device(struct net_device *dev) |
| 1725 | { |
| 1726 | struct list_head *lh; |
| 1727 | struct net *net; |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 1728 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1729 | net = dev_net(dev); |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 1730 | lh = dev->dev_list.next; |
| 1731 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
| 1732 | } |
| 1733 | |
Eric Dumazet | ce81b76 | 2009-11-11 17:34:30 +0000 | [diff] [blame] | 1734 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
| 1735 | { |
| 1736 | struct list_head *lh; |
| 1737 | struct net *net; |
| 1738 | |
| 1739 | net = dev_net(dev); |
Eric Dumazet | ccf4343 | 2011-01-26 18:08:02 +0000 | [diff] [blame] | 1740 | lh = rcu_dereference(list_next_rcu(&dev->dev_list)); |
Eric Dumazet | ce81b76 | 2009-11-11 17:34:30 +0000 | [diff] [blame] | 1741 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
| 1742 | } |
| 1743 | |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 1744 | static inline struct net_device *first_net_device(struct net *net) |
| 1745 | { |
| 1746 | return list_empty(&net->dev_base_head) ? NULL : |
| 1747 | net_device_entry(net->dev_base_head.next); |
| 1748 | } |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 1749 | |
Eric Dumazet | ccf4343 | 2011-01-26 18:08:02 +0000 | [diff] [blame] | 1750 | static inline struct net_device *first_net_device_rcu(struct net *net) |
| 1751 | { |
| 1752 | struct list_head *lh = rcu_dereference(list_next_rcu(&net->dev_base_head)); |
| 1753 | |
| 1754 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
| 1755 | } |
| 1756 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | extern int netdev_boot_setup_check(struct net_device *dev); |
| 1758 | extern unsigned long netdev_boot_base(const char *prefix, int unit); |
Eric Dumazet | 941666c | 2010-12-05 01:23:53 +0000 | [diff] [blame] | 1759 | extern struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, |
| 1760 | const char *hwaddr); |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1761 | extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); |
| 1762 | extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1763 | extern void dev_add_pack(struct packet_type *pt); |
| 1764 | extern void dev_remove_pack(struct packet_type *pt); |
| 1765 | extern void __dev_remove_pack(struct packet_type *pt); |
Vlad Yasevich | 62532da | 2012-11-15 08:49:10 +0000 | [diff] [blame] | 1766 | extern void dev_add_offload(struct packet_offload *po); |
| 1767 | extern void dev_remove_offload(struct packet_offload *po); |
| 1768 | extern void __dev_remove_offload(struct packet_offload *po); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | |
Eric Dumazet | bb69ae0 | 2010-06-07 11:42:13 +0000 | [diff] [blame] | 1770 | extern struct net_device *dev_get_by_flags_rcu(struct net *net, unsigned short flags, |
| 1771 | unsigned short mask); |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1772 | extern struct net_device *dev_get_by_name(struct net *net, const char *name); |
Eric Dumazet | 72c9528 | 2009-10-30 07:11:27 +0000 | [diff] [blame] | 1773 | extern struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1774 | extern struct net_device *__dev_get_by_name(struct net *net, const char *name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1775 | extern int dev_alloc_name(struct net_device *dev, const char *name); |
| 1776 | extern int dev_open(struct net_device *dev); |
| 1777 | extern int dev_close(struct net_device *dev); |
Ben Hutchings | 0187bdf | 2008-06-19 16:15:47 -0700 | [diff] [blame] | 1778 | extern void dev_disable_lro(struct net_device *dev); |
Michel Machado | 95603e2 | 2012-06-12 10:16:35 +0000 | [diff] [blame] | 1779 | extern int dev_loopback_xmit(struct sk_buff *newskb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | extern int dev_queue_xmit(struct sk_buff *skb); |
| 1781 | extern int register_netdevice(struct net_device *dev); |
Eric Dumazet | 44a0873 | 2009-10-27 07:03:04 +0000 | [diff] [blame] | 1782 | extern void unregister_netdevice_queue(struct net_device *dev, |
| 1783 | struct list_head *head); |
Eric Dumazet | 9b5e383 | 2009-10-27 07:04:19 +0000 | [diff] [blame] | 1784 | extern void unregister_netdevice_many(struct list_head *head); |
Eric Dumazet | 44a0873 | 2009-10-27 07:03:04 +0000 | [diff] [blame] | 1785 | static inline void unregister_netdevice(struct net_device *dev) |
| 1786 | { |
| 1787 | unregister_netdevice_queue(dev, NULL); |
| 1788 | } |
| 1789 | |
Eric Dumazet | 29b4433 | 2010-10-11 10:22:12 +0000 | [diff] [blame] | 1790 | extern int netdev_refcnt_read(const struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1791 | extern void free_netdev(struct net_device *dev); |
| 1792 | extern void synchronize_net(void); |
Benjamin Herrenschmidt | 937f1ba | 2009-01-14 21:05:05 -0800 | [diff] [blame] | 1793 | extern int init_dummy_netdev(struct net_device *dev); |
| 1794 | |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1795 | extern struct net_device *dev_get_by_index(struct net *net, int ifindex); |
| 1796 | extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); |
Eric Dumazet | fb699dfd | 2009-10-19 19:18:49 +0000 | [diff] [blame] | 1797 | extern struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); |
Nicolas Schichan | 5dbe7c1 | 2013-06-26 17:23:42 +0200 | [diff] [blame] | 1798 | extern int netdev_get_name(struct net *net, char *name, int ifindex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1799 | extern int dev_restart(struct net_device *dev); |
| 1800 | #ifdef CONFIG_NETPOLL_TRAP |
| 1801 | extern int netpoll_trap(void); |
| 1802 | #endif |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1803 | extern int skb_gro_receive(struct sk_buff **head, |
| 1804 | struct sk_buff *skb); |
| 1805 | |
| 1806 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) |
| 1807 | { |
| 1808 | return NAPI_GRO_CB(skb)->data_offset; |
| 1809 | } |
| 1810 | |
| 1811 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) |
| 1812 | { |
| 1813 | return skb->len - NAPI_GRO_CB(skb)->data_offset; |
| 1814 | } |
| 1815 | |
| 1816 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) |
| 1817 | { |
| 1818 | NAPI_GRO_CB(skb)->data_offset += len; |
| 1819 | } |
| 1820 | |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 1821 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
| 1822 | unsigned int offset) |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1823 | { |
Herbert Xu | 78a478d | 2009-05-26 18:50:21 +0000 | [diff] [blame] | 1824 | return NAPI_GRO_CB(skb)->frag0 + offset; |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1825 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 1827 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
| 1828 | { |
| 1829 | return NAPI_GRO_CB(skb)->frag0_len < hlen; |
| 1830 | } |
| 1831 | |
| 1832 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
| 1833 | unsigned int offset) |
| 1834 | { |
Herbert Xu | 17dd759 | 2011-07-27 06:16:28 -0700 | [diff] [blame] | 1835 | if (!pskb_may_pull(skb, hlen)) |
| 1836 | return NULL; |
| 1837 | |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 1838 | NAPI_GRO_CB(skb)->frag0 = NULL; |
| 1839 | NAPI_GRO_CB(skb)->frag0_len = 0; |
Herbert Xu | 17dd759 | 2011-07-27 06:16:28 -0700 | [diff] [blame] | 1840 | return skb->data + offset; |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 1841 | } |
| 1842 | |
Herbert Xu | aa4b9f5 | 2009-02-08 18:00:37 +0000 | [diff] [blame] | 1843 | static inline void *skb_gro_mac_header(struct sk_buff *skb) |
| 1844 | { |
Herbert Xu | 78d3fd0 | 2009-05-26 18:50:23 +0000 | [diff] [blame] | 1845 | return NAPI_GRO_CB(skb)->frag0 ?: skb_mac_header(skb); |
Herbert Xu | aa4b9f5 | 2009-02-08 18:00:37 +0000 | [diff] [blame] | 1846 | } |
| 1847 | |
Herbert Xu | 36e7b1b | 2009-04-27 05:44:45 -0700 | [diff] [blame] | 1848 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
| 1849 | { |
Herbert Xu | 78d3fd0 | 2009-05-26 18:50:23 +0000 | [diff] [blame] | 1850 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
| 1851 | skb_network_offset(skb); |
Herbert Xu | 36e7b1b | 2009-04-27 05:44:45 -0700 | [diff] [blame] | 1852 | } |
| 1853 | |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 1854 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
| 1855 | unsigned short type, |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1856 | const void *daddr, const void *saddr, |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 1857 | unsigned int len) |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 1858 | { |
Ursula Braun | f1ecfd5 | 2007-10-22 16:16:14 +0200 | [diff] [blame] | 1859 | if (!dev->header_ops || !dev->header_ops->create) |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 1860 | return 0; |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1861 | |
| 1862 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 1863 | } |
| 1864 | |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 1865 | static inline int dev_parse_header(const struct sk_buff *skb, |
| 1866 | unsigned char *haddr) |
| 1867 | { |
| 1868 | const struct net_device *dev = skb->dev; |
| 1869 | |
Patrick McHardy | 1b83336 | 2007-10-18 05:09:28 -0700 | [diff] [blame] | 1870 | if (!dev->header_ops || !dev->header_ops->parse) |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 1871 | return 0; |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1872 | return dev->header_ops->parse(skb, haddr); |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 1873 | } |
| 1874 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
| 1876 | extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); |
| 1877 | static inline int unregister_gifconf(unsigned int family) |
| 1878 | { |
| 1879 | return register_gifconf(family, NULL); |
| 1880 | } |
| 1881 | |
Willem de Bruijn | 99bbc70 | 2013-05-20 04:02:32 +0000 | [diff] [blame] | 1882 | #ifdef CONFIG_NET_FLOW_LIMIT |
Willem de Bruijn | 5f121b9 | 2013-06-13 15:29:38 -0400 | [diff] [blame] | 1883 | #define FLOW_LIMIT_HISTORY (1 << 7) /* must be ^2 and !overflow buckets */ |
Willem de Bruijn | 99bbc70 | 2013-05-20 04:02:32 +0000 | [diff] [blame] | 1884 | struct sd_flow_limit { |
| 1885 | u64 count; |
| 1886 | unsigned int num_buckets; |
| 1887 | unsigned int history_head; |
| 1888 | u16 history[FLOW_LIMIT_HISTORY]; |
| 1889 | u8 buckets[]; |
| 1890 | }; |
| 1891 | |
| 1892 | extern int netdev_flow_limit_table_len; |
| 1893 | #endif /* CONFIG_NET_FLOW_LIMIT */ |
| 1894 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1895 | /* |
Eric Dumazet | 8875127 | 2010-04-19 05:07:33 +0000 | [diff] [blame] | 1896 | * Incoming packets are placed on per-cpu queues |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1897 | */ |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 1898 | struct softnet_data { |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1899 | struct Qdisc *output_queue; |
Changli Gao | a9cbd58 | 2010-04-26 23:06:24 +0000 | [diff] [blame] | 1900 | struct Qdisc **output_queue_tailp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | struct list_head poll_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1902 | struct sk_buff *completion_queue; |
Changli Gao | 6e7676c | 2010-04-27 15:07:33 -0700 | [diff] [blame] | 1903 | struct sk_buff_head process_queue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1904 | |
Changli Gao | dee4287 | 2010-05-02 05:42:16 +0000 | [diff] [blame] | 1905 | /* stats */ |
David S. Miller | cd7b539 | 2010-05-02 22:27:59 -0700 | [diff] [blame] | 1906 | unsigned int processed; |
| 1907 | unsigned int time_squeeze; |
| 1908 | unsigned int cpu_collision; |
| 1909 | unsigned int received_rps; |
Changli Gao | dee4287 | 2010-05-02 05:42:16 +0000 | [diff] [blame] | 1910 | |
Changli Gao | fd793d8 | 2010-04-15 00:16:59 -0700 | [diff] [blame] | 1911 | #ifdef CONFIG_RPS |
Eric Dumazet | 8875127 | 2010-04-19 05:07:33 +0000 | [diff] [blame] | 1912 | struct softnet_data *rps_ipi_list; |
| 1913 | |
| 1914 | /* Elements below can be accessed between CPUs for RPS */ |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1915 | struct call_single_data csd ____cacheline_aligned_in_smp; |
Eric Dumazet | 8875127 | 2010-04-19 05:07:33 +0000 | [diff] [blame] | 1916 | struct softnet_data *rps_ipi_next; |
| 1917 | unsigned int cpu; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 1918 | unsigned int input_queue_head; |
Tom Herbert | 76cc8b1 | 2010-05-20 18:37:59 +0000 | [diff] [blame] | 1919 | unsigned int input_queue_tail; |
Tom Herbert | 1e94d72 | 2010-03-18 17:45:44 -0700 | [diff] [blame] | 1920 | #endif |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 1921 | unsigned int dropped; |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1922 | struct sk_buff_head input_pkt_queue; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1923 | struct napi_struct backlog; |
Willem de Bruijn | 99bbc70 | 2013-05-20 04:02:32 +0000 | [diff] [blame] | 1924 | |
| 1925 | #ifdef CONFIG_NET_FLOW_LIMIT |
Willem de Bruijn | 5f121b9 | 2013-06-13 15:29:38 -0400 | [diff] [blame] | 1926 | struct sd_flow_limit __rcu *flow_limit; |
Willem de Bruijn | 99bbc70 | 2013-05-20 04:02:32 +0000 | [diff] [blame] | 1927 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1928 | }; |
| 1929 | |
Tom Herbert | 76cc8b1 | 2010-05-20 18:37:59 +0000 | [diff] [blame] | 1930 | static inline void input_queue_head_incr(struct softnet_data *sd) |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 1931 | { |
| 1932 | #ifdef CONFIG_RPS |
Tom Herbert | 76cc8b1 | 2010-05-20 18:37:59 +0000 | [diff] [blame] | 1933 | sd->input_queue_head++; |
| 1934 | #endif |
| 1935 | } |
| 1936 | |
| 1937 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, |
| 1938 | unsigned int *qtail) |
| 1939 | { |
| 1940 | #ifdef CONFIG_RPS |
| 1941 | *qtail = ++sd->input_queue_tail; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 1942 | #endif |
| 1943 | } |
| 1944 | |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1945 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1947 | extern void __netif_schedule(struct Qdisc *q); |
David S. Miller | 86d804e | 2008-07-08 23:11:25 -0700 | [diff] [blame] | 1948 | |
| 1949 | static inline void netif_schedule_queue(struct netdev_queue *txq) |
| 1950 | { |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 1951 | if (!(txq->state & QUEUE_STATE_ANY_XOFF)) |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1952 | __netif_schedule(txq->qdisc); |
David S. Miller | 86d804e | 2008-07-08 23:11:25 -0700 | [diff] [blame] | 1953 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1955 | static inline void netif_tx_schedule_all(struct net_device *dev) |
| 1956 | { |
| 1957 | unsigned int i; |
| 1958 | |
| 1959 | for (i = 0; i < dev->num_tx_queues; i++) |
| 1960 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); |
| 1961 | } |
| 1962 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 1963 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
| 1964 | { |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 1965 | clear_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 1966 | } |
| 1967 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1968 | /** |
| 1969 | * netif_start_queue - allow transmit |
| 1970 | * @dev: network device |
| 1971 | * |
| 1972 | * Allow upper layers to call the device hard_start_xmit routine. |
| 1973 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | static inline void netif_start_queue(struct net_device *dev) |
| 1975 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1976 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | } |
| 1978 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1979 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
| 1980 | { |
| 1981 | unsigned int i; |
| 1982 | |
| 1983 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 1984 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 1985 | netif_tx_start_queue(txq); |
| 1986 | } |
| 1987 | } |
| 1988 | |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 1989 | static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | { |
| 1991 | #ifdef CONFIG_NETPOLL_TRAP |
Sergei Shtylyov | 5f286e1 | 2007-04-28 20:57:37 -0700 | [diff] [blame] | 1992 | if (netpoll_trap()) { |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 1993 | netif_tx_start_queue(dev_queue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1994 | return; |
Sergei Shtylyov | 5f286e1 | 2007-04-28 20:57:37 -0700 | [diff] [blame] | 1995 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | #endif |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 1997 | if (test_and_clear_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state)) |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1998 | __netif_schedule(dev_queue->qdisc); |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 1999 | } |
| 2000 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 2001 | /** |
| 2002 | * netif_wake_queue - restart transmit |
| 2003 | * @dev: network device |
| 2004 | * |
| 2005 | * Allow upper layers to call the device hard_start_xmit routine. |
| 2006 | * Used for flow control when transmit resources are available. |
| 2007 | */ |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 2008 | static inline void netif_wake_queue(struct net_device *dev) |
| 2009 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2010 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2011 | } |
| 2012 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2013 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
| 2014 | { |
| 2015 | unsigned int i; |
| 2016 | |
| 2017 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 2018 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 2019 | netif_tx_wake_queue(txq); |
| 2020 | } |
| 2021 | } |
| 2022 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 2023 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
| 2024 | { |
Guillaume Chazarain | 18543a6 | 2010-11-06 06:39:32 +0000 | [diff] [blame] | 2025 | if (WARN_ON(!dev_queue)) { |
Joe Perches | 256ee43 | 2011-03-01 07:06:12 +0000 | [diff] [blame] | 2026 | pr_info("netif_stop_queue() cannot be called before register_netdev()\n"); |
Guillaume Chazarain | 18543a6 | 2010-11-06 06:39:32 +0000 | [diff] [blame] | 2027 | return; |
| 2028 | } |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 2029 | set_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 2030 | } |
| 2031 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2032 | /** |
| 2033 | * netif_stop_queue - stop transmitted packets |
| 2034 | * @dev: network device |
| 2035 | * |
| 2036 | * Stop upper layers calling the device hard_start_xmit routine. |
| 2037 | * Used for flow control when transmit resources are unavailable. |
| 2038 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | static inline void netif_stop_queue(struct net_device *dev) |
| 2040 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2041 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | } |
| 2043 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2044 | static inline void netif_tx_stop_all_queues(struct net_device *dev) |
| 2045 | { |
| 2046 | unsigned int i; |
| 2047 | |
| 2048 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 2049 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 2050 | netif_tx_stop_queue(txq); |
| 2051 | } |
| 2052 | } |
| 2053 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2054 | static inline bool netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 2055 | { |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 2056 | return test_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 2057 | } |
| 2058 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2059 | /** |
| 2060 | * netif_queue_stopped - test if transmit queue is flowblocked |
| 2061 | * @dev: network device |
| 2062 | * |
| 2063 | * Test if transmit queue on device is currently unable to send. |
| 2064 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2065 | static inline bool netif_queue_stopped(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2066 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2067 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2068 | } |
| 2069 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2070 | static inline bool netif_xmit_stopped(const struct netdev_queue *dev_queue) |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2071 | { |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 2072 | return dev_queue->state & QUEUE_STATE_ANY_XOFF; |
| 2073 | } |
| 2074 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2075 | static inline bool netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue) |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 2076 | { |
| 2077 | return dev_queue->state & QUEUE_STATE_ANY_XOFF_OR_FROZEN; |
| 2078 | } |
| 2079 | |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2080 | static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, |
| 2081 | unsigned int bytes) |
| 2082 | { |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 2083 | #ifdef CONFIG_BQL |
| 2084 | dql_queued(&dev_queue->dql, bytes); |
Alexander Duyck | b37c0fb | 2012-02-07 02:29:06 +0000 | [diff] [blame] | 2085 | |
| 2086 | if (likely(dql_avail(&dev_queue->dql) >= 0)) |
| 2087 | return; |
| 2088 | |
| 2089 | set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); |
| 2090 | |
| 2091 | /* |
| 2092 | * The XOFF flag must be set before checking the dql_avail below, |
| 2093 | * because in netdev_tx_completed_queue we update the dql_completed |
| 2094 | * before checking the XOFF flag. |
| 2095 | */ |
| 2096 | smp_mb(); |
| 2097 | |
| 2098 | /* check again in case another CPU has just made room avail */ |
| 2099 | if (unlikely(dql_avail(&dev_queue->dql) >= 0)) |
| 2100 | clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 2101 | #endif |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2102 | } |
| 2103 | |
Florian Fainelli | 0042d0c | 2013-09-06 16:58:00 +0100 | [diff] [blame] | 2104 | /** |
| 2105 | * netdev_sent_queue - report the number of bytes queued to hardware |
| 2106 | * @dev: network device |
| 2107 | * @bytes: number of bytes queued to the hardware device queue |
| 2108 | * |
| 2109 | * Report the number of bytes queued for sending/completion to the network |
| 2110 | * device hardware queue. @bytes should be a good approximation and should |
| 2111 | * exactly match netdev_completed_queue() @bytes |
| 2112 | */ |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2113 | static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes) |
| 2114 | { |
| 2115 | netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes); |
| 2116 | } |
| 2117 | |
| 2118 | static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue, |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 2119 | unsigned int pkts, unsigned int bytes) |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2120 | { |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 2121 | #ifdef CONFIG_BQL |
Alexander Duyck | b37c0fb | 2012-02-07 02:29:06 +0000 | [diff] [blame] | 2122 | if (unlikely(!bytes)) |
| 2123 | return; |
| 2124 | |
| 2125 | dql_completed(&dev_queue->dql, bytes); |
| 2126 | |
| 2127 | /* |
| 2128 | * Without the memory barrier there is a small possiblity that |
| 2129 | * netdev_tx_sent_queue will miss the update and cause the queue to |
| 2130 | * be stopped forever |
| 2131 | */ |
| 2132 | smp_mb(); |
| 2133 | |
| 2134 | if (dql_avail(&dev_queue->dql) < 0) |
| 2135 | return; |
| 2136 | |
| 2137 | if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state)) |
| 2138 | netif_schedule_queue(dev_queue); |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 2139 | #endif |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2140 | } |
| 2141 | |
Florian Fainelli | 0042d0c | 2013-09-06 16:58:00 +0100 | [diff] [blame] | 2142 | /** |
| 2143 | * netdev_completed_queue - report bytes and packets completed by device |
| 2144 | * @dev: network device |
| 2145 | * @pkts: actual number of packets sent over the medium |
| 2146 | * @bytes: actual number of bytes sent over the medium |
| 2147 | * |
| 2148 | * Report the number of bytes and packets transmitted by the network device |
| 2149 | * hardware queue over the physical medium, @bytes must exactly match the |
| 2150 | * @bytes amount passed to netdev_sent_queue() |
| 2151 | */ |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2152 | static inline void netdev_completed_queue(struct net_device *dev, |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 2153 | unsigned int pkts, unsigned int bytes) |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2154 | { |
| 2155 | netdev_tx_completed_queue(netdev_get_tx_queue(dev, 0), pkts, bytes); |
| 2156 | } |
| 2157 | |
| 2158 | static inline void netdev_tx_reset_queue(struct netdev_queue *q) |
| 2159 | { |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 2160 | #ifdef CONFIG_BQL |
Alexander Duyck | 5c49035 | 2012-02-07 02:29:01 +0000 | [diff] [blame] | 2161 | clear_bit(__QUEUE_STATE_STACK_XOFF, &q->state); |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 2162 | dql_reset(&q->dql); |
| 2163 | #endif |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2164 | } |
| 2165 | |
Florian Fainelli | 0042d0c | 2013-09-06 16:58:00 +0100 | [diff] [blame] | 2166 | /** |
| 2167 | * netdev_reset_queue - reset the packets and bytes count of a network device |
| 2168 | * @dev_queue: network device |
| 2169 | * |
| 2170 | * Reset the bytes and packet count of a network device and clear the |
| 2171 | * software flow control OFF bit for this network device |
| 2172 | */ |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2173 | static inline void netdev_reset_queue(struct net_device *dev_queue) |
| 2174 | { |
| 2175 | netdev_tx_reset_queue(netdev_get_tx_queue(dev_queue, 0)); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2176 | } |
| 2177 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2178 | /** |
| 2179 | * netif_running - test if up |
| 2180 | * @dev: network device |
| 2181 | * |
| 2182 | * Test if the device has been brought up. |
| 2183 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2184 | static inline bool netif_running(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2185 | { |
| 2186 | return test_bit(__LINK_STATE_START, &dev->state); |
| 2187 | } |
| 2188 | |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2189 | /* |
| 2190 | * Routines to manage the subqueues on a device. We only need start |
| 2191 | * stop, and a check if it's stopped. All other device management is |
| 2192 | * done at the overall netdevice level. |
| 2193 | * Also test the device if we're multiqueue. |
| 2194 | */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2195 | |
| 2196 | /** |
| 2197 | * netif_start_subqueue - allow sending packets on subqueue |
| 2198 | * @dev: network device |
| 2199 | * @queue_index: sub queue index |
| 2200 | * |
| 2201 | * Start individual transmit queue of a device with multiple transmit queues. |
| 2202 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2203 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
| 2204 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2205 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 2206 | |
| 2207 | netif_tx_start_queue(txq); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2208 | } |
| 2209 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2210 | /** |
| 2211 | * netif_stop_subqueue - stop sending packets on subqueue |
| 2212 | * @dev: network device |
| 2213 | * @queue_index: sub queue index |
| 2214 | * |
| 2215 | * Stop individual transmit queue of a device with multiple transmit queues. |
| 2216 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2217 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
| 2218 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2219 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2220 | #ifdef CONFIG_NETPOLL_TRAP |
| 2221 | if (netpoll_trap()) |
| 2222 | return; |
| 2223 | #endif |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 2224 | netif_tx_stop_queue(txq); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2225 | } |
| 2226 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2227 | /** |
| 2228 | * netif_subqueue_stopped - test status of subqueue |
| 2229 | * @dev: network device |
| 2230 | * @queue_index: sub queue index |
| 2231 | * |
| 2232 | * Check individual transmit queue of a device with multiple transmit queues. |
| 2233 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2234 | static inline bool __netif_subqueue_stopped(const struct net_device *dev, |
| 2235 | u16 queue_index) |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2236 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2237 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 2238 | |
| 2239 | return netif_tx_queue_stopped(txq); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2240 | } |
| 2241 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2242 | static inline bool netif_subqueue_stopped(const struct net_device *dev, |
| 2243 | struct sk_buff *skb) |
Pavel Emelyanov | 668f895 | 2007-10-21 17:01:56 -0700 | [diff] [blame] | 2244 | { |
| 2245 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); |
| 2246 | } |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2247 | |
| 2248 | /** |
| 2249 | * netif_wake_subqueue - allow sending packets on subqueue |
| 2250 | * @dev: network device |
| 2251 | * @queue_index: sub queue index |
| 2252 | * |
| 2253 | * Resume individual transmit queue of a device with multiple transmit queues. |
| 2254 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2255 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) |
| 2256 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2257 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2258 | #ifdef CONFIG_NETPOLL_TRAP |
| 2259 | if (netpoll_trap()) |
| 2260 | return; |
| 2261 | #endif |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 2262 | if (test_and_clear_bit(__QUEUE_STATE_DRV_XOFF, &txq->state)) |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 2263 | __netif_schedule(txq->qdisc); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2264 | } |
| 2265 | |
Alexander Duyck | 537c00d | 2013-01-10 08:57:02 +0000 | [diff] [blame] | 2266 | #ifdef CONFIG_XPS |
Alexander Duyck | 537c00d | 2013-01-10 08:57:02 +0000 | [diff] [blame] | 2267 | extern int netif_set_xps_queue(struct net_device *dev, struct cpumask *mask, |
| 2268 | u16 index); |
| 2269 | #else |
| 2270 | static inline int netif_set_xps_queue(struct net_device *dev, |
| 2271 | struct cpumask *mask, |
| 2272 | u16 index) |
| 2273 | { |
| 2274 | return 0; |
| 2275 | } |
| 2276 | #endif |
| 2277 | |
Vladislav Zolotarov | a3d22a6 | 2010-12-13 06:27:10 +0000 | [diff] [blame] | 2278 | /* |
| 2279 | * Returns a Tx hash for the given packet when dev->real_num_tx_queues is used |
| 2280 | * as a distribution range limit for the returned value. |
| 2281 | */ |
| 2282 | static inline u16 skb_tx_hash(const struct net_device *dev, |
| 2283 | const struct sk_buff *skb) |
| 2284 | { |
| 2285 | return __skb_tx_hash(dev, skb, dev->real_num_tx_queues); |
| 2286 | } |
| 2287 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2288 | /** |
| 2289 | * netif_is_multiqueue - test if device has multiple transmit queues |
| 2290 | * @dev: network device |
| 2291 | * |
| 2292 | * Check if device has multiple transmit queues |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2293 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2294 | static inline bool netif_is_multiqueue(const struct net_device *dev) |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2295 | { |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 2296 | return dev->num_tx_queues > 1; |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2297 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2298 | |
Tom Herbert | e648493 | 2010-10-18 18:04:39 +0000 | [diff] [blame] | 2299 | extern int netif_set_real_num_tx_queues(struct net_device *dev, |
| 2300 | unsigned int txq); |
John Fastabend | f0796d5 | 2010-07-01 13:21:57 +0000 | [diff] [blame] | 2301 | |
Ben Hutchings | 62fe0b4 | 2010-09-27 08:24:33 +0000 | [diff] [blame] | 2302 | #ifdef CONFIG_RPS |
| 2303 | extern int netif_set_real_num_rx_queues(struct net_device *dev, |
| 2304 | unsigned int rxq); |
| 2305 | #else |
| 2306 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, |
| 2307 | unsigned int rxq) |
| 2308 | { |
| 2309 | return 0; |
| 2310 | } |
| 2311 | #endif |
| 2312 | |
Ben Hutchings | 3171d02 | 2010-09-27 08:24:49 +0000 | [diff] [blame] | 2313 | static inline int netif_copy_real_num_queues(struct net_device *to_dev, |
| 2314 | const struct net_device *from_dev) |
| 2315 | { |
Jiri Pirko | ee6ae1a | 2012-07-20 02:28:46 +0000 | [diff] [blame] | 2316 | int err; |
| 2317 | |
| 2318 | err = netif_set_real_num_tx_queues(to_dev, |
| 2319 | from_dev->real_num_tx_queues); |
| 2320 | if (err) |
| 2321 | return err; |
Ben Hutchings | 3171d02 | 2010-09-27 08:24:49 +0000 | [diff] [blame] | 2322 | #ifdef CONFIG_RPS |
| 2323 | return netif_set_real_num_rx_queues(to_dev, |
| 2324 | from_dev->real_num_rx_queues); |
| 2325 | #else |
| 2326 | return 0; |
| 2327 | #endif |
| 2328 | } |
| 2329 | |
Yuval Mintz | 16917b8 | 2012-07-01 03:18:50 +0000 | [diff] [blame] | 2330 | #define DEFAULT_MAX_NUM_RSS_QUEUES (8) |
| 2331 | extern int netif_get_num_default_rss_queues(void); |
| 2332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | /* Use this variant when it is known for sure that it |
Matti Linnanvuori | 0ef4730 | 2008-03-28 16:33:00 -0700 | [diff] [blame] | 2334 | * is executing from hardware interrupt context or with hardware interrupts |
| 2335 | * disabled. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2337 | extern void dev_kfree_skb_irq(struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2338 | |
| 2339 | /* Use this variant in places where it could be invoked |
Matti Linnanvuori | 0ef4730 | 2008-03-28 16:33:00 -0700 | [diff] [blame] | 2340 | * from either hardware interrupt or other context, with hardware interrupts |
| 2341 | * either disabled or enabled. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2342 | */ |
Denis Vlasenko | 5607943 | 2006-03-29 15:57:29 -0800 | [diff] [blame] | 2343 | extern void dev_kfree_skb_any(struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2344 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2345 | extern int netif_rx(struct sk_buff *skb); |
| 2346 | extern int netif_rx_ni(struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2347 | extern int netif_receive_skb(struct sk_buff *skb); |
Ben Hutchings | c7c4b3b | 2009-10-29 21:36:53 -0700 | [diff] [blame] | 2348 | extern gro_result_t napi_gro_receive(struct napi_struct *napi, |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 2349 | struct sk_buff *skb); |
Eric Dumazet | 2e71a6f | 2012-10-06 08:08:49 +0000 | [diff] [blame] | 2350 | extern void napi_gro_flush(struct napi_struct *napi, bool flush_old); |
Herbert Xu | 76620aa | 2009-04-16 02:02:07 -0700 | [diff] [blame] | 2351 | extern struct sk_buff * napi_get_frags(struct napi_struct *napi); |
Ben Hutchings | c7c4b3b | 2009-10-29 21:36:53 -0700 | [diff] [blame] | 2352 | extern gro_result_t napi_gro_frags(struct napi_struct *napi); |
Herbert Xu | 76620aa | 2009-04-16 02:02:07 -0700 | [diff] [blame] | 2353 | |
| 2354 | static inline void napi_free_frags(struct napi_struct *napi) |
| 2355 | { |
| 2356 | kfree_skb(napi->skb); |
| 2357 | napi->skb = NULL; |
| 2358 | } |
| 2359 | |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 2360 | extern int netdev_rx_handler_register(struct net_device *dev, |
Jiri Pirko | 93e2c32 | 2010-06-10 03:34:59 +0000 | [diff] [blame] | 2361 | rx_handler_func_t *rx_handler, |
| 2362 | void *rx_handler_data); |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 2363 | extern void netdev_rx_handler_unregister(struct net_device *dev); |
| 2364 | |
David S. Miller | 95f050b | 2012-03-06 16:12:15 -0500 | [diff] [blame] | 2365 | extern bool dev_valid_name(const char *name); |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 2366 | extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); |
| 2367 | extern int dev_ethtool(struct net *net, struct ifreq *); |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 2368 | extern unsigned int dev_get_flags(const struct net_device *); |
Patrick McHardy | bd38081 | 2010-02-26 06:34:53 +0000 | [diff] [blame] | 2369 | extern int __dev_change_flags(struct net_device *, unsigned int flags); |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 2370 | extern int dev_change_flags(struct net_device *, unsigned int); |
Patrick McHardy | bd38081 | 2010-02-26 06:34:53 +0000 | [diff] [blame] | 2371 | extern void __dev_notify_flags(struct net_device *, unsigned int old_flags); |
Stephen Hemminger | cf04a4c7 | 2008-09-30 02:22:14 -0700 | [diff] [blame] | 2372 | extern int dev_change_name(struct net_device *, const char *); |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 2373 | extern int dev_set_alias(struct net_device *, const char *, size_t); |
Eric W. Biederman | ce286d3 | 2007-09-12 13:53:49 +0200 | [diff] [blame] | 2374 | extern int dev_change_net_namespace(struct net_device *, |
| 2375 | struct net *, const char *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2376 | extern int dev_set_mtu(struct net_device *, int); |
Vlad Dogaru | cbda10f | 2011-01-13 23:38:30 +0000 | [diff] [blame] | 2377 | extern void dev_set_group(struct net_device *, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2378 | extern int dev_set_mac_address(struct net_device *, |
| 2379 | struct sockaddr *); |
Jiri Pirko | 4bf84c3 | 2012-12-27 23:49:37 +0000 | [diff] [blame] | 2380 | extern int dev_change_carrier(struct net_device *, |
| 2381 | bool new_carrier); |
Jiri Pirko | 66b52b0 | 2013-07-29 18:16:49 +0200 | [diff] [blame] | 2382 | extern int dev_get_phys_port_id(struct net_device *dev, |
| 2383 | struct netdev_phys_port_id *ppid); |
Herbert Xu | f6a78bf | 2006-06-22 02:57:17 -0700 | [diff] [blame] | 2384 | extern int dev_hard_start_xmit(struct sk_buff *skb, |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2385 | struct net_device *dev, |
| 2386 | struct netdev_queue *txq); |
Arnd Bergmann | 4454096 | 2009-11-26 06:07:08 +0000 | [diff] [blame] | 2387 | extern int dev_forward_skb(struct net_device *dev, |
| 2388 | struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2389 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 2390 | extern int netdev_budget; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2391 | |
| 2392 | /* Called by rtnetlink.c:rtnl_unlock() */ |
| 2393 | extern void netdev_run_todo(void); |
| 2394 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2395 | /** |
| 2396 | * dev_put - release reference to device |
| 2397 | * @dev: network device |
| 2398 | * |
Benjamin Thery | 9ef4429 | 2007-10-10 21:18:17 -0700 | [diff] [blame] | 2399 | * Release reference to device to allow it to be freed. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2400 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2401 | static inline void dev_put(struct net_device *dev) |
| 2402 | { |
Christoph Lameter | 933393f | 2011-12-22 11:58:51 -0600 | [diff] [blame] | 2403 | this_cpu_dec(*dev->pcpu_refcnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2404 | } |
| 2405 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2406 | /** |
| 2407 | * dev_hold - get reference to device |
| 2408 | * @dev: network device |
| 2409 | * |
Benjamin Thery | 9ef4429 | 2007-10-10 21:18:17 -0700 | [diff] [blame] | 2410 | * Hold reference to device to keep it from being freed. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2411 | */ |
Stephen Hemminger | 1533306 | 2006-03-20 22:32:28 -0800 | [diff] [blame] | 2412 | static inline void dev_hold(struct net_device *dev) |
| 2413 | { |
Christoph Lameter | 933393f | 2011-12-22 11:58:51 -0600 | [diff] [blame] | 2414 | this_cpu_inc(*dev->pcpu_refcnt); |
Stephen Hemminger | 1533306 | 2006-03-20 22:32:28 -0800 | [diff] [blame] | 2415 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2416 | |
| 2417 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on |
| 2418 | * and _off may be called from IRQ context, but it is caller |
| 2419 | * who is responsible for serialization of these calls. |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 2420 | * |
| 2421 | * The name carrier is inappropriate, these functions should really be |
| 2422 | * called netif_lowerlayer_*() because they represent the state of any |
| 2423 | * kind of lower layer not just hardware media. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2424 | */ |
| 2425 | |
Ben Hutchings | 8f4cccb | 2012-08-20 22:16:51 +0100 | [diff] [blame] | 2426 | extern void linkwatch_init_dev(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2427 | extern void linkwatch_fire_event(struct net_device *dev); |
Eric Dumazet | e014deb | 2009-11-17 05:59:21 +0000 | [diff] [blame] | 2428 | extern void linkwatch_forget_dev(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2429 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2430 | /** |
| 2431 | * netif_carrier_ok - test if carrier present |
| 2432 | * @dev: network device |
| 2433 | * |
| 2434 | * Check if carrier is present on device |
| 2435 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2436 | static inline bool netif_carrier_ok(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2437 | { |
| 2438 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); |
| 2439 | } |
| 2440 | |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 2441 | extern unsigned long dev_trans_start(struct net_device *dev); |
| 2442 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2443 | extern void __netdev_watchdog_up(struct net_device *dev); |
| 2444 | |
Denis Vlasenko | 0a242ef | 2005-08-11 15:32:53 -0700 | [diff] [blame] | 2445 | extern void netif_carrier_on(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2446 | |
Denis Vlasenko | 0a242ef | 2005-08-11 15:32:53 -0700 | [diff] [blame] | 2447 | extern void netif_carrier_off(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2448 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2449 | /** |
| 2450 | * netif_dormant_on - mark device as dormant. |
| 2451 | * @dev: network device |
| 2452 | * |
| 2453 | * Mark device as dormant (as per RFC2863). |
| 2454 | * |
| 2455 | * The dormant state indicates that the relevant interface is not |
| 2456 | * actually in a condition to pass packets (i.e., it is not 'up') but is |
| 2457 | * in a "pending" state, waiting for some external event. For "on- |
| 2458 | * demand" interfaces, this new state identifies the situation where the |
| 2459 | * interface is waiting for events to place it in the up state. |
| 2460 | * |
| 2461 | */ |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 2462 | static inline void netif_dormant_on(struct net_device *dev) |
| 2463 | { |
| 2464 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) |
| 2465 | linkwatch_fire_event(dev); |
| 2466 | } |
| 2467 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2468 | /** |
| 2469 | * netif_dormant_off - set device as not dormant. |
| 2470 | * @dev: network device |
| 2471 | * |
| 2472 | * Device is not in dormant state. |
| 2473 | */ |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 2474 | static inline void netif_dormant_off(struct net_device *dev) |
| 2475 | { |
| 2476 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) |
| 2477 | linkwatch_fire_event(dev); |
| 2478 | } |
| 2479 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2480 | /** |
| 2481 | * netif_dormant - test if carrier present |
| 2482 | * @dev: network device |
| 2483 | * |
| 2484 | * Check if carrier is present on device |
| 2485 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2486 | static inline bool netif_dormant(const struct net_device *dev) |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 2487 | { |
| 2488 | return test_bit(__LINK_STATE_DORMANT, &dev->state); |
| 2489 | } |
| 2490 | |
| 2491 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2492 | /** |
| 2493 | * netif_oper_up - test if device is operational |
| 2494 | * @dev: network device |
| 2495 | * |
| 2496 | * Check if carrier is operational |
| 2497 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2498 | static inline bool netif_oper_up(const struct net_device *dev) |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 2499 | { |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 2500 | return (dev->operstate == IF_OPER_UP || |
| 2501 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); |
| 2502 | } |
| 2503 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2504 | /** |
| 2505 | * netif_device_present - is device available or removed |
| 2506 | * @dev: network device |
| 2507 | * |
| 2508 | * Check if device has not been removed from system. |
| 2509 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2510 | static inline bool netif_device_present(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2511 | { |
| 2512 | return test_bit(__LINK_STATE_PRESENT, &dev->state); |
| 2513 | } |
| 2514 | |
Denis Vlasenko | 5607943 | 2006-03-29 15:57:29 -0800 | [diff] [blame] | 2515 | extern void netif_device_detach(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2516 | |
Denis Vlasenko | 5607943 | 2006-03-29 15:57:29 -0800 | [diff] [blame] | 2517 | extern void netif_device_attach(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2518 | |
| 2519 | /* |
| 2520 | * Network interface message level settings |
| 2521 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2522 | |
| 2523 | enum { |
| 2524 | NETIF_MSG_DRV = 0x0001, |
| 2525 | NETIF_MSG_PROBE = 0x0002, |
| 2526 | NETIF_MSG_LINK = 0x0004, |
| 2527 | NETIF_MSG_TIMER = 0x0008, |
| 2528 | NETIF_MSG_IFDOWN = 0x0010, |
| 2529 | NETIF_MSG_IFUP = 0x0020, |
| 2530 | NETIF_MSG_RX_ERR = 0x0040, |
| 2531 | NETIF_MSG_TX_ERR = 0x0080, |
| 2532 | NETIF_MSG_TX_QUEUED = 0x0100, |
| 2533 | NETIF_MSG_INTR = 0x0200, |
| 2534 | NETIF_MSG_TX_DONE = 0x0400, |
| 2535 | NETIF_MSG_RX_STATUS = 0x0800, |
| 2536 | NETIF_MSG_PKTDATA = 0x1000, |
| 2537 | NETIF_MSG_HW = 0x2000, |
| 2538 | NETIF_MSG_WOL = 0x4000, |
| 2539 | }; |
| 2540 | |
| 2541 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) |
| 2542 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) |
| 2543 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) |
| 2544 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) |
| 2545 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) |
| 2546 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) |
| 2547 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) |
| 2548 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) |
| 2549 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) |
| 2550 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) |
| 2551 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) |
| 2552 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) |
| 2553 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) |
| 2554 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) |
| 2555 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) |
| 2556 | |
| 2557 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) |
| 2558 | { |
| 2559 | /* use default */ |
| 2560 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) |
| 2561 | return default_msg_enable_bits; |
| 2562 | if (debug_value == 0) /* no output */ |
| 2563 | return 0; |
| 2564 | /* set low N bits */ |
| 2565 | return (1 << debug_value) - 1; |
| 2566 | } |
| 2567 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2568 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 2569 | { |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2570 | spin_lock(&txq->_xmit_lock); |
| 2571 | txq->xmit_lock_owner = cpu; |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 2572 | } |
| 2573 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2574 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
| 2575 | { |
| 2576 | spin_lock_bh(&txq->_xmit_lock); |
| 2577 | txq->xmit_lock_owner = smp_processor_id(); |
| 2578 | } |
| 2579 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2580 | static inline bool __netif_tx_trylock(struct netdev_queue *txq) |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2581 | { |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2582 | bool ok = spin_trylock(&txq->_xmit_lock); |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2583 | if (likely(ok)) |
| 2584 | txq->xmit_lock_owner = smp_processor_id(); |
| 2585 | return ok; |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 2586 | } |
| 2587 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2588 | static inline void __netif_tx_unlock(struct netdev_queue *txq) |
| 2589 | { |
| 2590 | txq->xmit_lock_owner = -1; |
| 2591 | spin_unlock(&txq->_xmit_lock); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 2592 | } |
| 2593 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2594 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) |
| 2595 | { |
| 2596 | txq->xmit_lock_owner = -1; |
| 2597 | spin_unlock_bh(&txq->_xmit_lock); |
| 2598 | } |
| 2599 | |
Eric Dumazet | 08baf56 | 2009-05-25 22:58:01 -0700 | [diff] [blame] | 2600 | static inline void txq_trans_update(struct netdev_queue *txq) |
| 2601 | { |
| 2602 | if (txq->xmit_lock_owner != -1) |
| 2603 | txq->trans_start = jiffies; |
| 2604 | } |
| 2605 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2606 | /** |
| 2607 | * netif_tx_lock - grab network device transmit lock |
| 2608 | * @dev: network device |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2609 | * |
| 2610 | * Get network device transmit lock |
| 2611 | */ |
| 2612 | static inline void netif_tx_lock(struct net_device *dev) |
| 2613 | { |
| 2614 | unsigned int i; |
| 2615 | int cpu; |
| 2616 | |
| 2617 | spin_lock(&dev->tx_global_lock); |
| 2618 | cpu = smp_processor_id(); |
| 2619 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 2620 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 2621 | |
| 2622 | /* We are the only thread of execution doing a |
| 2623 | * freeze, but we have to grab the _xmit_lock in |
| 2624 | * order to synchronize with threads which are in |
| 2625 | * the ->hard_start_xmit() handler and already |
| 2626 | * checked the frozen bit. |
| 2627 | */ |
| 2628 | __netif_tx_lock(txq, cpu); |
| 2629 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
| 2630 | __netif_tx_unlock(txq); |
| 2631 | } |
| 2632 | } |
| 2633 | |
| 2634 | static inline void netif_tx_lock_bh(struct net_device *dev) |
| 2635 | { |
| 2636 | local_bh_disable(); |
| 2637 | netif_tx_lock(dev); |
| 2638 | } |
| 2639 | |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 2640 | static inline void netif_tx_unlock(struct net_device *dev) |
| 2641 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2642 | unsigned int i; |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2643 | |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2644 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 2645 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2646 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2647 | /* No need to grab the _xmit_lock here. If the |
| 2648 | * queue is not stopped for another reason, we |
| 2649 | * force a schedule. |
| 2650 | */ |
| 2651 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 2652 | netif_schedule_queue(txq); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2653 | } |
| 2654 | spin_unlock(&dev->tx_global_lock); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 2655 | } |
| 2656 | |
| 2657 | static inline void netif_tx_unlock_bh(struct net_device *dev) |
| 2658 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2659 | netif_tx_unlock(dev); |
| 2660 | local_bh_enable(); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 2661 | } |
| 2662 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2663 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 2664 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2665 | __netif_tx_lock(txq, cpu); \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 2666 | } \ |
| 2667 | } |
| 2668 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2669 | #define HARD_TX_UNLOCK(dev, txq) { \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 2670 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2671 | __netif_tx_unlock(txq); \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 2672 | } \ |
| 2673 | } |
| 2674 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2675 | static inline void netif_tx_disable(struct net_device *dev) |
| 2676 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2677 | unsigned int i; |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2678 | int cpu; |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2679 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2680 | local_bh_disable(); |
| 2681 | cpu = smp_processor_id(); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2682 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 2683 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2684 | |
| 2685 | __netif_tx_lock(txq, cpu); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2686 | netif_tx_stop_queue(txq); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2687 | __netif_tx_unlock(txq); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2688 | } |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2689 | local_bh_enable(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2690 | } |
| 2691 | |
David S. Miller | e308a5d | 2008-07-15 00:13:44 -0700 | [diff] [blame] | 2692 | static inline void netif_addr_lock(struct net_device *dev) |
| 2693 | { |
| 2694 | spin_lock(&dev->addr_list_lock); |
| 2695 | } |
| 2696 | |
Jiri Pirko | 2429f7a | 2012-01-09 06:36:54 +0000 | [diff] [blame] | 2697 | static inline void netif_addr_lock_nested(struct net_device *dev) |
| 2698 | { |
| 2699 | spin_lock_nested(&dev->addr_list_lock, SINGLE_DEPTH_NESTING); |
| 2700 | } |
| 2701 | |
David S. Miller | e308a5d | 2008-07-15 00:13:44 -0700 | [diff] [blame] | 2702 | static inline void netif_addr_lock_bh(struct net_device *dev) |
| 2703 | { |
| 2704 | spin_lock_bh(&dev->addr_list_lock); |
| 2705 | } |
| 2706 | |
| 2707 | static inline void netif_addr_unlock(struct net_device *dev) |
| 2708 | { |
| 2709 | spin_unlock(&dev->addr_list_lock); |
| 2710 | } |
| 2711 | |
| 2712 | static inline void netif_addr_unlock_bh(struct net_device *dev) |
| 2713 | { |
| 2714 | spin_unlock_bh(&dev->addr_list_lock); |
| 2715 | } |
| 2716 | |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2717 | /* |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 2718 | * dev_addrs walker. Should be used only for read access. Call with |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2719 | * rcu_read_lock held. |
| 2720 | */ |
| 2721 | #define for_each_dev_addr(dev, ha) \ |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 2722 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2723 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2724 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
| 2725 | |
| 2726 | extern void ether_setup(struct net_device *dev); |
| 2727 | |
| 2728 | /* Support for loadable net-drivers */ |
Tom Herbert | 36909ea | 2011-01-09 19:36:31 +0000 | [diff] [blame] | 2729 | extern struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2730 | void (*setup)(struct net_device *), |
Tom Herbert | 36909ea | 2011-01-09 19:36:31 +0000 | [diff] [blame] | 2731 | unsigned int txqs, unsigned int rxqs); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2732 | #define alloc_netdev(sizeof_priv, name, setup) \ |
Tom Herbert | 36909ea | 2011-01-09 19:36:31 +0000 | [diff] [blame] | 2733 | alloc_netdev_mqs(sizeof_priv, name, setup, 1, 1) |
| 2734 | |
| 2735 | #define alloc_netdev_mq(sizeof_priv, name, setup, count) \ |
| 2736 | alloc_netdev_mqs(sizeof_priv, name, setup, count, count) |
| 2737 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2738 | extern int register_netdev(struct net_device *dev); |
| 2739 | extern void unregister_netdev(struct net_device *dev); |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2740 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 2741 | /* General hardware address lists handling functions */ |
| 2742 | extern int __hw_addr_add_multiple(struct netdev_hw_addr_list *to_list, |
| 2743 | struct netdev_hw_addr_list *from_list, |
| 2744 | int addr_len, unsigned char addr_type); |
| 2745 | extern void __hw_addr_del_multiple(struct netdev_hw_addr_list *to_list, |
| 2746 | struct netdev_hw_addr_list *from_list, |
| 2747 | int addr_len, unsigned char addr_type); |
| 2748 | extern int __hw_addr_sync(struct netdev_hw_addr_list *to_list, |
| 2749 | struct netdev_hw_addr_list *from_list, |
| 2750 | int addr_len); |
| 2751 | extern void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, |
| 2752 | struct netdev_hw_addr_list *from_list, |
| 2753 | int addr_len); |
| 2754 | extern void __hw_addr_flush(struct netdev_hw_addr_list *list); |
| 2755 | extern void __hw_addr_init(struct netdev_hw_addr_list *list); |
| 2756 | |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2757 | /* Functions used for device addresses handling */ |
stephen hemminger | 6b6e272 | 2012-09-17 10:03:26 +0000 | [diff] [blame] | 2758 | extern int dev_addr_add(struct net_device *dev, const unsigned char *addr, |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2759 | unsigned char addr_type); |
stephen hemminger | 6b6e272 | 2012-09-17 10:03:26 +0000 | [diff] [blame] | 2760 | extern int dev_addr_del(struct net_device *dev, const unsigned char *addr, |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2761 | unsigned char addr_type); |
| 2762 | extern int dev_addr_add_multiple(struct net_device *to_dev, |
| 2763 | struct net_device *from_dev, |
| 2764 | unsigned char addr_type); |
| 2765 | extern int dev_addr_del_multiple(struct net_device *to_dev, |
| 2766 | struct net_device *from_dev, |
| 2767 | unsigned char addr_type); |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 2768 | extern void dev_addr_flush(struct net_device *dev); |
| 2769 | extern int dev_addr_init(struct net_device *dev); |
| 2770 | |
| 2771 | /* Functions used for unicast addresses handling */ |
stephen hemminger | 6b6e272 | 2012-09-17 10:03:26 +0000 | [diff] [blame] | 2772 | extern int dev_uc_add(struct net_device *dev, const unsigned char *addr); |
| 2773 | extern int dev_uc_add_excl(struct net_device *dev, const unsigned char *addr); |
| 2774 | extern int dev_uc_del(struct net_device *dev, const unsigned char *addr); |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 2775 | extern int dev_uc_sync(struct net_device *to, struct net_device *from); |
Vlad Yasevich | 4cd729b0 | 2013-04-15 09:54:25 +0000 | [diff] [blame] | 2776 | extern int dev_uc_sync_multiple(struct net_device *to, struct net_device *from); |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 2777 | extern void dev_uc_unsync(struct net_device *to, struct net_device *from); |
| 2778 | extern void dev_uc_flush(struct net_device *dev); |
| 2779 | extern void dev_uc_init(struct net_device *dev); |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2780 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 2781 | /* Functions used for multicast addresses handling */ |
stephen hemminger | 6b6e272 | 2012-09-17 10:03:26 +0000 | [diff] [blame] | 2782 | extern int dev_mc_add(struct net_device *dev, const unsigned char *addr); |
| 2783 | extern int dev_mc_add_global(struct net_device *dev, const unsigned char *addr); |
| 2784 | extern int dev_mc_add_excl(struct net_device *dev, const unsigned char *addr); |
| 2785 | extern int dev_mc_del(struct net_device *dev, const unsigned char *addr); |
| 2786 | extern int dev_mc_del_global(struct net_device *dev, const unsigned char *addr); |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 2787 | extern int dev_mc_sync(struct net_device *to, struct net_device *from); |
Vlad Yasevich | 4cd729b0 | 2013-04-15 09:54:25 +0000 | [diff] [blame] | 2788 | extern int dev_mc_sync_multiple(struct net_device *to, struct net_device *from); |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 2789 | extern void dev_mc_unsync(struct net_device *to, struct net_device *from); |
| 2790 | extern void dev_mc_flush(struct net_device *dev); |
| 2791 | extern void dev_mc_init(struct net_device *dev); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 2792 | |
| 2793 | /* Functions used for secondary unicast and multicast support */ |
| 2794 | extern void dev_set_rx_mode(struct net_device *dev); |
| 2795 | extern void __dev_set_rx_mode(struct net_device *dev); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 2796 | extern int dev_set_promiscuity(struct net_device *dev, int inc); |
| 2797 | extern int dev_set_allmulti(struct net_device *dev, int inc); |
| 2798 | extern void netdev_state_change(struct net_device *dev); |
Amerigo Wang | ee89bab | 2012-08-09 22:14:56 +0000 | [diff] [blame] | 2799 | extern void netdev_notify_peers(struct net_device *dev); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 2800 | extern void netdev_features_change(struct net_device *dev); |
| 2801 | /* Load a device via the kmod */ |
| 2802 | extern void dev_load(struct net *net, const char *name); |
Ben Hutchings | d775351 | 2010-07-09 09:12:41 +0000 | [diff] [blame] | 2803 | extern struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, |
| 2804 | struct rtnl_link_stats64 *storage); |
Eric Dumazet | 77a1abf | 2012-03-05 04:50:09 +0000 | [diff] [blame] | 2805 | extern void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64, |
| 2806 | const struct net_device_stats *netdev_stats); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 2807 | |
| 2808 | extern int netdev_max_backlog; |
Eric Dumazet | 3b098e2 | 2010-05-15 23:57:10 -0700 | [diff] [blame] | 2809 | extern int netdev_tstamp_prequeue; |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 2810 | extern int weight_p; |
Eric Dumazet | 0a14842 | 2011-04-20 09:27:32 +0000 | [diff] [blame] | 2811 | extern int bpf_jit_enable; |
Jiri Pirko | 9ff162a | 2013-01-03 22:48:49 +0000 | [diff] [blame] | 2812 | |
| 2813 | extern bool netdev_has_upper_dev(struct net_device *dev, |
| 2814 | struct net_device *upper_dev); |
| 2815 | extern bool netdev_has_any_upper_dev(struct net_device *dev); |
Veaceslav Falico | 8b5be85 | 2013-08-28 23:25:08 +0200 | [diff] [blame] | 2816 | extern struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev, |
| 2817 | struct list_head **iter); |
| 2818 | |
| 2819 | /* iterate through upper list, must be called under RCU read lock */ |
| 2820 | #define netdev_for_each_upper_dev_rcu(dev, upper, iter) \ |
| 2821 | for (iter = &(dev)->upper_dev_list, \ |
| 2822 | upper = netdev_upper_get_next_dev_rcu(dev, &(iter)); \ |
| 2823 | upper; \ |
| 2824 | upper = netdev_upper_get_next_dev_rcu(dev, &(iter))) |
| 2825 | |
Jiri Pirko | 9ff162a | 2013-01-03 22:48:49 +0000 | [diff] [blame] | 2826 | extern struct net_device *netdev_master_upper_dev_get(struct net_device *dev); |
| 2827 | extern struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev); |
| 2828 | extern int netdev_upper_dev_link(struct net_device *dev, |
| 2829 | struct net_device *upper_dev); |
| 2830 | extern int netdev_master_upper_dev_link(struct net_device *dev, |
| 2831 | struct net_device *upper_dev); |
| 2832 | extern void netdev_upper_dev_unlink(struct net_device *dev, |
| 2833 | struct net_device *upper_dev); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 2834 | extern int skb_checksum_help(struct sk_buff *skb); |
Cong Wang | 12b0004 | 2013-02-05 16:36:38 +0000 | [diff] [blame] | 2835 | extern struct sk_buff *__skb_gso_segment(struct sk_buff *skb, |
| 2836 | netdev_features_t features, bool tx_path); |
Pravin B Shelar | 05e8ef4 | 2013-02-14 09:44:55 +0000 | [diff] [blame] | 2837 | extern struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb, |
| 2838 | netdev_features_t features); |
Cong Wang | 12b0004 | 2013-02-05 16:36:38 +0000 | [diff] [blame] | 2839 | |
| 2840 | static inline |
| 2841 | struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features) |
| 2842 | { |
| 2843 | return __skb_gso_segment(skb, features, true); |
| 2844 | } |
Pravin B Shelar | ec5f061 | 2013-03-07 09:28:01 +0000 | [diff] [blame] | 2845 | __be16 skb_network_protocol(struct sk_buff *skb); |
| 2846 | |
| 2847 | static inline bool can_checksum_protocol(netdev_features_t features, |
| 2848 | __be16 protocol) |
| 2849 | { |
| 2850 | return ((features & NETIF_F_GEN_CSUM) || |
| 2851 | ((features & NETIF_F_V4_CSUM) && |
| 2852 | protocol == htons(ETH_P_IP)) || |
| 2853 | ((features & NETIF_F_V6_CSUM) && |
| 2854 | protocol == htons(ETH_P_IPV6)) || |
| 2855 | ((features & NETIF_F_FCOE_CRC) && |
| 2856 | protocol == htons(ETH_P_FCOE))); |
| 2857 | } |
Cong Wang | 12b0004 | 2013-02-05 16:36:38 +0000 | [diff] [blame] | 2858 | |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 2859 | #ifdef CONFIG_BUG |
| 2860 | extern void netdev_rx_csum_fault(struct net_device *dev); |
| 2861 | #else |
| 2862 | static inline void netdev_rx_csum_fault(struct net_device *dev) |
| 2863 | { |
| 2864 | } |
| 2865 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2866 | /* rx skb timestamps */ |
| 2867 | extern void net_enable_timestamp(void); |
| 2868 | extern void net_disable_timestamp(void); |
| 2869 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 2870 | #ifdef CONFIG_PROC_FS |
Cong Wang | 900ff8c | 2013-02-18 19:20:33 +0000 | [diff] [blame] | 2871 | extern int __init dev_proc_init(void); |
| 2872 | #else |
| 2873 | #define dev_proc_init() 0 |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 2874 | #endif |
| 2875 | |
Jay Vosburgh | b8a9787 | 2008-06-13 18:12:04 -0700 | [diff] [blame] | 2876 | extern int netdev_class_create_file(struct class_attribute *class_attr); |
| 2877 | extern void netdev_class_remove_file(struct class_attribute *class_attr); |
| 2878 | |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 2879 | extern struct kobj_ns_type_operations net_ns_type_operations; |
| 2880 | |
David S. Miller | 3019de1 | 2011-06-06 16:41:33 -0700 | [diff] [blame] | 2881 | extern const char *netdev_drivername(const struct net_device *dev); |
Arjan van de Ven | 6579e57 | 2008-07-21 13:31:48 -0700 | [diff] [blame] | 2882 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 2883 | extern void linkwatch_run_queue(void); |
| 2884 | |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 2885 | static inline netdev_features_t netdev_get_wanted_features( |
| 2886 | struct net_device *dev) |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 2887 | { |
| 2888 | return (dev->features & ~dev->hw_features) | dev->wanted_features; |
| 2889 | } |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 2890 | netdev_features_t netdev_increment_features(netdev_features_t all, |
| 2891 | netdev_features_t one, netdev_features_t mask); |
Eric Dumazet | b0ce350 | 2013-05-16 07:34:53 +0000 | [diff] [blame] | 2892 | |
| 2893 | /* Allow TSO being used on stacked device : |
| 2894 | * Performing the GSO segmentation before last device |
| 2895 | * is a performance improvement. |
| 2896 | */ |
| 2897 | static inline netdev_features_t netdev_add_tso_features(netdev_features_t features, |
| 2898 | netdev_features_t mask) |
| 2899 | { |
| 2900 | return netdev_increment_features(features, NETIF_F_ALL_TSO, mask); |
| 2901 | } |
| 2902 | |
Michał Mirosław | 6cb6a27 | 2011-04-02 22:48:47 -0700 | [diff] [blame] | 2903 | int __netdev_update_features(struct net_device *dev); |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 2904 | void netdev_update_features(struct net_device *dev); |
Michał Mirosław | afe12cc | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 2905 | void netdev_change_features(struct net_device *dev); |
Herbert Xu | 7f353bf | 2007-08-10 15:47:58 -0700 | [diff] [blame] | 2906 | |
Patrick Mullaney | fc4a748 | 2009-12-03 15:59:22 -0800 | [diff] [blame] | 2907 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
| 2908 | struct net_device *dev); |
| 2909 | |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 2910 | netdev_features_t netif_skb_features(struct sk_buff *skb); |
Jesse Gross | 58e998c | 2010-10-29 12:14:55 +0000 | [diff] [blame] | 2911 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2912 | static inline bool net_gso_ok(netdev_features_t features, int gso_type) |
Herbert Xu | bcd7611 | 2006-06-30 13:36:35 -0700 | [diff] [blame] | 2913 | { |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 2914 | netdev_features_t feature = gso_type << NETIF_F_GSO_SHIFT; |
Michał Mirosław | 0345e18 | 2011-11-16 14:05:33 +0000 | [diff] [blame] | 2915 | |
| 2916 | /* check flags correspondence */ |
| 2917 | BUILD_BUG_ON(SKB_GSO_TCPV4 != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT)); |
| 2918 | BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_UFO >> NETIF_F_GSO_SHIFT)); |
| 2919 | BUILD_BUG_ON(SKB_GSO_DODGY != (NETIF_F_GSO_ROBUST >> NETIF_F_GSO_SHIFT)); |
| 2920 | BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT)); |
| 2921 | BUILD_BUG_ON(SKB_GSO_TCPV6 != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT)); |
| 2922 | BUILD_BUG_ON(SKB_GSO_FCOE != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT)); |
| 2923 | |
Herbert Xu | bcd7611 | 2006-06-30 13:36:35 -0700 | [diff] [blame] | 2924 | return (features & feature) == feature; |
| 2925 | } |
| 2926 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2927 | static inline bool skb_gso_ok(struct sk_buff *skb, netdev_features_t features) |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 2928 | { |
Herbert Xu | 278b251 | 2009-06-03 21:20:51 -0700 | [diff] [blame] | 2929 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
David S. Miller | 21dc330 | 2010-08-23 00:13:46 -0700 | [diff] [blame] | 2930 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 2931 | } |
| 2932 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2933 | static inline bool netif_needs_gso(struct sk_buff *skb, |
| 2934 | netdev_features_t features) |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 2935 | { |
Jesse Gross | fc74121 | 2011-01-09 06:23:32 +0000 | [diff] [blame] | 2936 | return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || |
Yi Zou | cdbee74 | 2012-03-16 23:08:11 +0000 | [diff] [blame] | 2937 | unlikely((skb->ip_summed != CHECKSUM_PARTIAL) && |
| 2938 | (skb->ip_summed != CHECKSUM_UNNECESSARY))); |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 2939 | } |
| 2940 | |
Peter P Waskiewicz Jr | 82cc1a7 | 2008-03-21 03:43:19 -0700 | [diff] [blame] | 2941 | static inline void netif_set_gso_max_size(struct net_device *dev, |
| 2942 | unsigned int size) |
| 2943 | { |
| 2944 | dev->gso_max_size = size; |
| 2945 | } |
| 2946 | |
nikolay@redhat.com | 8a7fbfa | 2013-03-12 02:49:01 +0000 | [diff] [blame] | 2947 | static inline bool netif_is_bond_master(struct net_device *dev) |
| 2948 | { |
| 2949 | return dev->flags & IFF_MASTER && dev->priv_flags & IFF_BONDING; |
| 2950 | } |
| 2951 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2952 | static inline bool netif_is_bond_slave(struct net_device *dev) |
Jiri Pirko | 1765a57 | 2011-02-12 06:48:36 +0000 | [diff] [blame] | 2953 | { |
| 2954 | return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING; |
| 2955 | } |
| 2956 | |
Ben Greear | 3bdc0eb | 2012-02-11 15:39:30 +0000 | [diff] [blame] | 2957 | static inline bool netif_supports_nofcs(struct net_device *dev) |
| 2958 | { |
| 2959 | return dev->priv_flags & IFF_SUPP_NOFCS; |
| 2960 | } |
| 2961 | |
Eric W. Biederman | 505d4f7 | 2008-11-07 22:54:20 -0800 | [diff] [blame] | 2962 | extern struct pernet_operations __net_initdata loopback_net_ops; |
Patrick McHardy | b1b67dd | 2009-04-20 04:49:28 +0000 | [diff] [blame] | 2963 | |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 2964 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ |
| 2965 | |
| 2966 | /* netdev_printk helpers, similar to dev_printk */ |
| 2967 | |
| 2968 | static inline const char *netdev_name(const struct net_device *dev) |
| 2969 | { |
| 2970 | if (dev->reg_state != NETREG_REGISTERED) |
| 2971 | return "(unregistered net_device)"; |
| 2972 | return dev->name; |
| 2973 | } |
| 2974 | |
Joe Perches | b9075fa | 2011-10-31 17:11:33 -0700 | [diff] [blame] | 2975 | extern __printf(3, 4) |
| 2976 | int netdev_printk(const char *level, const struct net_device *dev, |
| 2977 | const char *format, ...); |
| 2978 | extern __printf(2, 3) |
| 2979 | int netdev_emerg(const struct net_device *dev, const char *format, ...); |
| 2980 | extern __printf(2, 3) |
| 2981 | int netdev_alert(const struct net_device *dev, const char *format, ...); |
| 2982 | extern __printf(2, 3) |
| 2983 | int netdev_crit(const struct net_device *dev, const char *format, ...); |
| 2984 | extern __printf(2, 3) |
| 2985 | int netdev_err(const struct net_device *dev, const char *format, ...); |
| 2986 | extern __printf(2, 3) |
| 2987 | int netdev_warn(const struct net_device *dev, const char *format, ...); |
| 2988 | extern __printf(2, 3) |
| 2989 | int netdev_notice(const struct net_device *dev, const char *format, ...); |
| 2990 | extern __printf(2, 3) |
| 2991 | int netdev_info(const struct net_device *dev, const char *format, ...); |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 2992 | |
Vasiliy Kulikov | 8909c9a | 2011-03-02 00:33:13 +0300 | [diff] [blame] | 2993 | #define MODULE_ALIAS_NETDEV(device) \ |
| 2994 | MODULE_ALIAS("netdev-" device) |
| 2995 | |
Jim Cromie | b558c96 | 2011-12-19 17:11:18 -0500 | [diff] [blame] | 2996 | #if defined(CONFIG_DYNAMIC_DEBUG) |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 2997 | #define netdev_dbg(__dev, format, args...) \ |
| 2998 | do { \ |
Jason Baron | ffa10cb | 2011-08-11 14:36:48 -0400 | [diff] [blame] | 2999 | dynamic_netdev_dbg(__dev, format, ##args); \ |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 3000 | } while (0) |
Jim Cromie | b558c96 | 2011-12-19 17:11:18 -0500 | [diff] [blame] | 3001 | #elif defined(DEBUG) |
| 3002 | #define netdev_dbg(__dev, format, args...) \ |
| 3003 | netdev_printk(KERN_DEBUG, __dev, format, ##args) |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 3004 | #else |
| 3005 | #define netdev_dbg(__dev, format, args...) \ |
| 3006 | ({ \ |
| 3007 | if (0) \ |
| 3008 | netdev_printk(KERN_DEBUG, __dev, format, ##args); \ |
| 3009 | 0; \ |
| 3010 | }) |
| 3011 | #endif |
| 3012 | |
| 3013 | #if defined(VERBOSE_DEBUG) |
| 3014 | #define netdev_vdbg netdev_dbg |
| 3015 | #else |
| 3016 | |
| 3017 | #define netdev_vdbg(dev, format, args...) \ |
| 3018 | ({ \ |
| 3019 | if (0) \ |
| 3020 | netdev_printk(KERN_DEBUG, dev, format, ##args); \ |
| 3021 | 0; \ |
| 3022 | }) |
| 3023 | #endif |
| 3024 | |
| 3025 | /* |
| 3026 | * netdev_WARN() acts like dev_printk(), but with the key difference |
| 3027 | * of using a WARN/WARN_ON to get the message out, including the |
| 3028 | * file/line information and a backtrace. |
| 3029 | */ |
| 3030 | #define netdev_WARN(dev, format, args...) \ |
| 3031 | WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args); |
| 3032 | |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3033 | /* netif printk helpers, similar to netdev_printk */ |
| 3034 | |
| 3035 | #define netif_printk(priv, type, level, dev, fmt, args...) \ |
| 3036 | do { \ |
| 3037 | if (netif_msg_##type(priv)) \ |
| 3038 | netdev_printk(level, (dev), fmt, ##args); \ |
| 3039 | } while (0) |
| 3040 | |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3041 | #define netif_level(level, priv, type, dev, fmt, args...) \ |
| 3042 | do { \ |
| 3043 | if (netif_msg_##type(priv)) \ |
| 3044 | netdev_##level(dev, fmt, ##args); \ |
| 3045 | } while (0) |
| 3046 | |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3047 | #define netif_emerg(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3048 | netif_level(emerg, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3049 | #define netif_alert(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3050 | netif_level(alert, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3051 | #define netif_crit(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3052 | netif_level(crit, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3053 | #define netif_err(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3054 | netif_level(err, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3055 | #define netif_warn(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3056 | netif_level(warn, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3057 | #define netif_notice(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3058 | netif_level(notice, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3059 | #define netif_info(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3060 | netif_level(info, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3061 | |
Joe Perches | 0053ea9 | 2012-05-30 07:43:34 +0000 | [diff] [blame] | 3062 | #if defined(CONFIG_DYNAMIC_DEBUG) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3063 | #define netif_dbg(priv, type, netdev, format, args...) \ |
| 3064 | do { \ |
| 3065 | if (netif_msg_##type(priv)) \ |
Jason Baron | b5fb0a0 | 2011-08-11 14:36:53 -0400 | [diff] [blame] | 3066 | dynamic_netdev_dbg(netdev, format, ##args); \ |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3067 | } while (0) |
Joe Perches | 0053ea9 | 2012-05-30 07:43:34 +0000 | [diff] [blame] | 3068 | #elif defined(DEBUG) |
| 3069 | #define netif_dbg(priv, type, dev, format, args...) \ |
| 3070 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3071 | #else |
| 3072 | #define netif_dbg(priv, type, dev, format, args...) \ |
| 3073 | ({ \ |
| 3074 | if (0) \ |
| 3075 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
| 3076 | 0; \ |
| 3077 | }) |
| 3078 | #endif |
| 3079 | |
| 3080 | #if defined(VERBOSE_DEBUG) |
Ben Hutchings | bcfcc45 | 2010-07-02 07:08:44 +0000 | [diff] [blame] | 3081 | #define netif_vdbg netif_dbg |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3082 | #else |
| 3083 | #define netif_vdbg(priv, type, dev, format, args...) \ |
| 3084 | ({ \ |
| 3085 | if (0) \ |
Ben Hutchings | a4ed89c | 2010-05-18 06:56:32 +0000 | [diff] [blame] | 3086 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3087 | 0; \ |
| 3088 | }) |
| 3089 | #endif |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 3090 | |
Cong Wang | 900ff8c | 2013-02-18 19:20:33 +0000 | [diff] [blame] | 3091 | /* |
| 3092 | * The list of packet types we will receive (as opposed to discard) |
| 3093 | * and the routines to invoke. |
| 3094 | * |
| 3095 | * Why 16. Because with 16 the only overlap we get on a hash of the |
| 3096 | * low nibble of the protocol value is RARP/SNAP/X.25. |
| 3097 | * |
| 3098 | * NOTE: That is no longer true with the addition of VLAN tags. Not |
| 3099 | * sure which should go first, but I bet it won't make much |
| 3100 | * difference if we are running VLANs. The good news is that |
| 3101 | * this protocol won't be in the list unless compiled in, so |
| 3102 | * the average user (w/out VLANs) will not be adversely affected. |
| 3103 | * --BLG |
| 3104 | * |
| 3105 | * 0800 IP |
| 3106 | * 8100 802.1Q VLAN |
| 3107 | * 0001 802.3 |
| 3108 | * 0002 AX.25 |
| 3109 | * 0004 802.2 |
| 3110 | * 8035 RARP |
| 3111 | * 0005 SNAP |
| 3112 | * 0805 X.25 |
| 3113 | * 0806 ARP |
| 3114 | * 8137 IPX |
| 3115 | * 0009 Localtalk |
| 3116 | * 86DD IPv6 |
| 3117 | */ |
| 3118 | #define PTYPE_HASH_SIZE (16) |
| 3119 | #define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) |
| 3120 | |
Jiri Pirko | 385a154 | 2009-05-27 15:48:07 -0700 | [diff] [blame] | 3121 | #endif /* _LINUX_NETDEVICE_H */ |