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 | |
| 28 | #include <linux/if.h> |
| 29 | #include <linux/if_ether.h> |
| 30 | #include <linux/if_packet.h> |
| 31 | |
| 32 | #ifdef __KERNEL__ |
Al Viro | d7fe0f2 | 2006-12-03 23:15:30 -0500 | [diff] [blame] | 33 | #include <linux/timer.h> |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 34 | #include <linux/delay.h> |
Dmitri Vorobiev | cc0be32 | 2009-03-27 15:55:36 -0700 | [diff] [blame] | 35 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <asm/atomic.h> |
| 37 | #include <asm/cache.h> |
| 38 | #include <asm/byteorder.h> |
| 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <linux/device.h> |
| 41 | #include <linux/percpu.h> |
David S. Miller | 4d5b78c | 2009-05-06 16:52:51 -0700 | [diff] [blame] | 42 | #include <linux/rculist.h> |
Chris Leech | db21733 | 2006-06-17 21:24:58 -0700 | [diff] [blame] | 43 | #include <linux/dmaengine.h> |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 44 | #include <linux/workqueue.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
Patrick McHardy | b1b67dd | 2009-04-20 04:49:28 +0000 | [diff] [blame] | 46 | #include <linux/ethtool.h> |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 47 | #include <net/net_namespace.h> |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 48 | #include <net/dsa.h> |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 49 | #ifdef CONFIG_DCB |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 50 | #include <net/dcbnl.h> |
| 51 | #endif |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | struct vlan_group; |
Jeff Moyer | 115c1d6 | 2005-06-22 22:05:31 -0700 | [diff] [blame] | 54 | struct netpoll_info; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 55 | /* 802.11 specific */ |
| 56 | struct wireless_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | /* source back-compat hooks */ |
| 58 | #define SET_ETHTOOL_OPS(netdev,ops) \ |
| 59 | ( (netdev)->ethtool_ops = (ops) ) |
| 60 | |
| 61 | #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev |
| 62 | functions are available. */ |
| 63 | #define HAVE_FREE_NETDEV /* free_netdev() */ |
| 64 | #define HAVE_NETDEV_PRIV /* netdev_priv() */ |
| 65 | |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 66 | /* Backlog congestion levels */ |
| 67 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ |
| 68 | #define NET_RX_DROP 1 /* packet dropped */ |
| 69 | |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 70 | /* |
| 71 | * Transmit return codes: transmit return codes originate from three different |
| 72 | * namespaces: |
| 73 | * |
| 74 | * - qdisc return codes |
| 75 | * - driver transmit return codes |
| 76 | * - errno values |
| 77 | * |
| 78 | * Drivers are allowed to return any one of those in their hard_start_xmit() |
| 79 | * function. Real network devices commonly used with qdiscs should only return |
| 80 | * the driver transmit return codes though - when qdiscs are used, the actual |
| 81 | * transmission happens asynchronously, so the value is not propagated to |
| 82 | * higher layers. Virtual network devices transmit synchronously, in this case |
| 83 | * the driver transmit return codes are consumed by dev_queue_xmit(), all |
| 84 | * others are propagated to higher layers. |
| 85 | */ |
| 86 | |
| 87 | /* qdisc ->enqueue() return codes. */ |
| 88 | #define NET_XMIT_SUCCESS 0x00 |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 89 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
| 90 | #define NET_XMIT_CN 0x02 /* congestion notification */ |
| 91 | #define NET_XMIT_POLICED 0x03 /* skb is shot by police */ |
| 92 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
Gerrit Renker | b9df3cb | 2006-11-14 11:21:36 -0200 | [diff] [blame] | 94 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
| 95 | * indicates that the device will soon be dropping packets, or already drops |
| 96 | * some packets of the same priority; prompting us to send less aggressively. */ |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 97 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
| 99 | |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 100 | /* Driver transmit return codes */ |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 101 | #define NETDEV_TX_MASK 0xf0 |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 102 | |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 103 | enum netdev_tx { |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 104 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 105 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
| 106 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ |
| 107 | NETDEV_TX_LOCKED = 0x20, /* driver tx lock was already taken */ |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 108 | }; |
| 109 | typedef enum netdev_tx netdev_tx_t; |
| 110 | |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 111 | /* |
| 112 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; |
| 113 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. |
| 114 | */ |
| 115 | static inline bool dev_xmit_complete(int rc) |
| 116 | { |
| 117 | /* |
| 118 | * Positive cases with an skb consumed by a driver: |
| 119 | * - successful transmission (rc == NETDEV_TX_OK) |
| 120 | * - error while transmitting (rc < 0) |
| 121 | * - error while queueing to a different device (rc & NET_XMIT_MASK) |
| 122 | */ |
| 123 | if (likely(rc < NET_XMIT_MASK)) |
| 124 | return true; |
| 125 | |
| 126 | return false; |
| 127 | } |
| 128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | #endif |
| 130 | |
| 131 | #define MAX_ADDR_LEN 32 /* Largest hardware address length */ |
| 132 | |
Adrian Bunk | c88e6f5 | 2008-06-27 19:54:54 -0700 | [diff] [blame] | 133 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | /* |
| 135 | * Compute the worst case header length according to the protocols |
| 136 | * used. |
| 137 | */ |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 138 | |
David S. Miller | 8388e3d | 2008-05-12 20:17:33 -0700 | [diff] [blame] | 139 | #if defined(CONFIG_WLAN_80211) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) |
| 140 | # if defined(CONFIG_MAC80211_MESH) |
| 141 | # define LL_MAX_HEADER 128 |
| 142 | # else |
| 143 | # define LL_MAX_HEADER 96 |
| 144 | # endif |
Adrian Bunk | c759a6b | 2009-04-27 02:36:20 -0700 | [diff] [blame] | 145 | #elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE) |
David S. Miller | 8388e3d | 2008-05-12 20:17:33 -0700 | [diff] [blame] | 146 | # define LL_MAX_HEADER 48 |
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 | |
David S. Miller | e81c7359 | 2006-11-28 20:53:39 -0800 | [diff] [blame] | 151 | #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \ |
| 152 | !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ |
| 153 | !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ |
| 154 | !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | #define MAX_HEADER LL_MAX_HEADER |
| 156 | #else |
| 157 | #define MAX_HEADER (LL_MAX_HEADER + 48) |
| 158 | #endif |
| 159 | |
Adrian Bunk | c88e6f5 | 2008-06-27 19:54:54 -0700 | [diff] [blame] | 160 | #endif /* __KERNEL__ */ |
| 161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | /* |
| 163 | * Network device statistics. Akin to the 2.0 ether stats but |
| 164 | * with byte counters. |
| 165 | */ |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 166 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 167 | struct net_device_stats { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | unsigned long rx_packets; /* total packets received */ |
| 169 | unsigned long tx_packets; /* total packets transmitted */ |
| 170 | unsigned long rx_bytes; /* total bytes received */ |
| 171 | unsigned long tx_bytes; /* total bytes transmitted */ |
| 172 | unsigned long rx_errors; /* bad packets received */ |
| 173 | unsigned long tx_errors; /* packet transmit problems */ |
| 174 | unsigned long rx_dropped; /* no space in linux buffers */ |
| 175 | unsigned long tx_dropped; /* no space available in linux */ |
| 176 | unsigned long multicast; /* multicast packets received */ |
| 177 | unsigned long collisions; |
| 178 | |
| 179 | /* detailed rx_errors: */ |
| 180 | unsigned long rx_length_errors; |
| 181 | unsigned long rx_over_errors; /* receiver ring buff overflow */ |
| 182 | unsigned long rx_crc_errors; /* recved pkt with crc error */ |
| 183 | unsigned long rx_frame_errors; /* recv'd frame alignment error */ |
| 184 | unsigned long rx_fifo_errors; /* recv'r fifo overrun */ |
| 185 | unsigned long rx_missed_errors; /* receiver missed packet */ |
| 186 | |
| 187 | /* detailed tx_errors */ |
| 188 | unsigned long tx_aborted_errors; |
| 189 | unsigned long tx_carrier_errors; |
| 190 | unsigned long tx_fifo_errors; |
| 191 | unsigned long tx_heartbeat_errors; |
| 192 | unsigned long tx_window_errors; |
| 193 | |
| 194 | /* for cslip etc */ |
| 195 | unsigned long rx_compressed; |
| 196 | unsigned long tx_compressed; |
| 197 | }; |
| 198 | |
| 199 | |
| 200 | /* Media selection options. */ |
| 201 | enum { |
| 202 | IF_PORT_UNKNOWN = 0, |
| 203 | IF_PORT_10BASE2, |
| 204 | IF_PORT_10BASET, |
| 205 | IF_PORT_AUI, |
| 206 | IF_PORT_100BASET, |
| 207 | IF_PORT_100BASETX, |
| 208 | IF_PORT_100BASEFX |
| 209 | }; |
| 210 | |
| 211 | #ifdef __KERNEL__ |
| 212 | |
| 213 | #include <linux/cache.h> |
| 214 | #include <linux/skbuff.h> |
| 215 | |
| 216 | struct neighbour; |
| 217 | struct neigh_parms; |
| 218 | struct sk_buff; |
| 219 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 220 | struct netif_rx_stats { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | unsigned total; |
| 222 | unsigned dropped; |
| 223 | unsigned time_squeeze; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | unsigned cpu_collision; |
| 225 | }; |
| 226 | |
| 227 | DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat); |
| 228 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 229 | struct dev_addr_list { |
Patrick McHardy | bf74248 | 2007-06-27 01:26:19 -0700 | [diff] [blame] | 230 | struct dev_addr_list *next; |
| 231 | u8 da_addr[MAX_ADDR_LEN]; |
| 232 | u8 da_addrlen; |
Patrick McHardy | a0a400d | 2007-07-14 18:52:02 -0700 | [diff] [blame] | 233 | u8 da_synced; |
Patrick McHardy | bf74248 | 2007-06-27 01:26:19 -0700 | [diff] [blame] | 234 | int da_users; |
| 235 | int da_gusers; |
| 236 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | /* |
| 239 | * We tag multicasts with these structures. |
| 240 | */ |
Patrick McHardy | 3fba5a8 | 2007-06-27 01:26:58 -0700 | [diff] [blame] | 241 | |
| 242 | #define dev_mc_list dev_addr_list |
| 243 | #define dmi_addr da_addr |
| 244 | #define dmi_addrlen da_addrlen |
| 245 | #define dmi_users da_users |
| 246 | #define dmi_gusers da_gusers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 248 | struct netdev_hw_addr { |
| 249 | struct list_head list; |
| 250 | unsigned char addr[MAX_ADDR_LEN]; |
| 251 | unsigned char type; |
Jiri Pirko | ccffad25 | 2009-05-22 23:22:17 +0000 | [diff] [blame] | 252 | #define NETDEV_HW_ADDR_T_LAN 1 |
| 253 | #define NETDEV_HW_ADDR_T_SAN 2 |
| 254 | #define NETDEV_HW_ADDR_T_SLAVE 3 |
| 255 | #define NETDEV_HW_ADDR_T_UNICAST 4 |
| 256 | int refcount; |
| 257 | bool synced; |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 258 | struct rcu_head rcu_head; |
| 259 | }; |
| 260 | |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 261 | struct netdev_hw_addr_list { |
| 262 | struct list_head list; |
| 263 | int count; |
| 264 | }; |
| 265 | |
Jiri Pirko | 32e7bfc | 2010-01-25 13:36:10 -0800 | [diff] [blame] | 266 | #define netdev_uc_count(dev) ((dev)->uc.count) |
| 267 | #define netdev_uc_empty(dev) ((dev)->uc.count == 0) |
| 268 | #define netdev_for_each_uc_addr(ha, dev) \ |
| 269 | list_for_each_entry(ha, &dev->uc.list, list) |
| 270 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 271 | struct hh_cache { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | struct hh_cache *hh_next; /* Next entry */ |
| 273 | atomic_t hh_refcnt; /* number of users */ |
Eric Dumazet | f049098 | 2006-12-08 00:08:43 -0800 | [diff] [blame] | 274 | /* |
| 275 | * We want hh_output, hh_len, hh_lock and hh_data be a in a separate |
| 276 | * cache line on SMP. |
| 277 | * They are mostly read, but hh_refcnt may be changed quite frequently, |
| 278 | * incurring cache line ping pongs. |
| 279 | */ |
| 280 | __be16 hh_type ____cacheline_aligned_in_smp; |
| 281 | /* protocol identifier, f.e ETH_P_IP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | * NOTE: For VLANs, this will be the |
| 283 | * encapuslated type. --BLG |
| 284 | */ |
Arnaldo Carvalho de Melo | d5c42c0 | 2006-11-27 17:58:02 -0200 | [diff] [blame] | 285 | u16 hh_len; /* length of header */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | int (*hh_output)(struct sk_buff *skb); |
Stephen Hemminger | 3644f0c | 2006-12-07 15:08:17 -0800 | [diff] [blame] | 287 | seqlock_t hh_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | |
| 289 | /* cached hardware header; allow for machine alignment needs. */ |
| 290 | #define HH_DATA_MOD 16 |
| 291 | #define HH_DATA_OFF(__len) \ |
Jiri Benc | 5ba0eac | 2005-06-02 16:48:05 -0700 | [diff] [blame] | 292 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | #define HH_DATA_ALIGN(__len) \ |
| 294 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) |
| 295 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; |
| 296 | }; |
| 297 | |
| 298 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. |
| 299 | * Alternative is: |
| 300 | * dev->hard_header_len ? (dev->hard_header_len + |
| 301 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 |
| 302 | * |
| 303 | * We could use other alignment values, but we must maintain the |
| 304 | * relationship HH alignment <= LL alignment. |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 305 | * |
| 306 | * LL_ALLOCATED_SPACE also takes into account the tailroom the device |
| 307 | * may need. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | */ |
| 309 | #define LL_RESERVED_SPACE(dev) \ |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 310 | ((((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] | 311 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 312 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
| 313 | #define LL_ALLOCATED_SPACE(dev) \ |
| 314 | ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 316 | struct header_ops { |
| 317 | int (*create) (struct sk_buff *skb, struct net_device *dev, |
| 318 | unsigned short type, const void *daddr, |
| 319 | const void *saddr, unsigned len); |
| 320 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); |
| 321 | int (*rebuild)(struct sk_buff *skb); |
| 322 | #define HAVE_HEADER_CACHE |
| 323 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh); |
| 324 | void (*cache_update)(struct hh_cache *hh, |
| 325 | const struct net_device *dev, |
| 326 | const unsigned char *haddr); |
| 327 | }; |
| 328 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | /* These flag bits are private to the generic network queueing |
| 330 | * layer, they may not be explicitly referenced by any other |
| 331 | * code. |
| 332 | */ |
| 333 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 334 | enum netdev_state_t { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | __LINK_STATE_START, |
| 336 | __LINK_STATE_PRESENT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | __LINK_STATE_NOCARRIER, |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 338 | __LINK_STATE_LINKWATCH_PENDING, |
| 339 | __LINK_STATE_DORMANT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | }; |
| 341 | |
| 342 | |
| 343 | /* |
| 344 | * This structure holds at boot time configured netdevice settings. They |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 345 | * are then used in the device probing. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | */ |
| 347 | struct netdev_boot_setup { |
| 348 | char name[IFNAMSIZ]; |
| 349 | struct ifmap map; |
| 350 | }; |
| 351 | #define NETDEV_BOOT_SETUP_MAX 8 |
| 352 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 353 | extern int __init netdev_boot_setup(char *str); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | |
| 355 | /* |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 356 | * Structure for NAPI scheduling similar to tasklet but with weighting |
| 357 | */ |
| 358 | struct napi_struct { |
| 359 | /* The poll_list must only be managed by the entity which |
| 360 | * changes the state of the NAPI_STATE_SCHED bit. This means |
| 361 | * whoever atomically sets that bit can add this napi_struct |
| 362 | * to the per-cpu poll_list, and whoever clears that bit |
| 363 | * can remove from the list right before clearing the bit. |
| 364 | */ |
| 365 | struct list_head poll_list; |
| 366 | |
| 367 | unsigned long state; |
| 368 | int weight; |
| 369 | int (*poll)(struct napi_struct *, int); |
| 370 | #ifdef CONFIG_NETPOLL |
| 371 | spinlock_t poll_lock; |
| 372 | int poll_owner; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 373 | #endif |
Herbert Xu | 4ae5544 | 2009-02-08 18:00:36 +0000 | [diff] [blame] | 374 | |
| 375 | unsigned int gro_count; |
| 376 | |
Herbert Xu | 5d38a07 | 2009-01-04 16:13:40 -0800 | [diff] [blame] | 377 | struct net_device *dev; |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 378 | struct list_head dev_list; |
| 379 | struct sk_buff *gro_list; |
Herbert Xu | 5d38a07 | 2009-01-04 16:13:40 -0800 | [diff] [blame] | 380 | struct sk_buff *skb; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 381 | }; |
| 382 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 383 | enum { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 384 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 385 | NAPI_STATE_DISABLE, /* Disable pending */ |
Neil Horman | 7b363e4 | 2008-12-09 23:22:26 -0800 | [diff] [blame] | 386 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 387 | }; |
| 388 | |
Ben Hutchings | 5b252f0 | 2009-10-29 07:17:09 +0000 | [diff] [blame] | 389 | enum gro_result { |
Herbert Xu | d1c76af | 2009-03-16 10:50:02 -0700 | [diff] [blame] | 390 | GRO_MERGED, |
| 391 | GRO_MERGED_FREE, |
| 392 | GRO_HELD, |
| 393 | GRO_NORMAL, |
| 394 | GRO_DROP, |
| 395 | }; |
Ben Hutchings | 5b252f0 | 2009-10-29 07:17:09 +0000 | [diff] [blame] | 396 | typedef enum gro_result gro_result_t; |
Herbert Xu | d1c76af | 2009-03-16 10:50:02 -0700 | [diff] [blame] | 397 | |
Harvey Harrison | b3c9752 | 2008-02-13 15:03:15 -0800 | [diff] [blame] | 398 | extern void __napi_schedule(struct napi_struct *n); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 399 | |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 400 | static inline int napi_disable_pending(struct napi_struct *n) |
| 401 | { |
| 402 | return test_bit(NAPI_STATE_DISABLE, &n->state); |
| 403 | } |
| 404 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 405 | /** |
| 406 | * napi_schedule_prep - check if napi can be scheduled |
| 407 | * @n: napi context |
| 408 | * |
| 409 | * Test if NAPI routine is already running, and if not mark |
| 410 | * it as running. This is used as a condition variable |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 411 | * insure only one NAPI poll instance runs. We also make |
| 412 | * sure there is no pending NAPI disable. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 413 | */ |
| 414 | static inline int napi_schedule_prep(struct napi_struct *n) |
| 415 | { |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 416 | return !napi_disable_pending(n) && |
| 417 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 418 | } |
| 419 | |
| 420 | /** |
| 421 | * napi_schedule - schedule NAPI poll |
| 422 | * @n: napi context |
| 423 | * |
| 424 | * Schedule NAPI poll routine to be called if it is not already |
| 425 | * running. |
| 426 | */ |
| 427 | static inline void napi_schedule(struct napi_struct *n) |
| 428 | { |
| 429 | if (napi_schedule_prep(n)) |
| 430 | __napi_schedule(n); |
| 431 | } |
| 432 | |
Roland Dreier | bfe13f5 | 2007-10-09 15:47:37 -0700 | [diff] [blame] | 433 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
| 434 | static inline int napi_reschedule(struct napi_struct *napi) |
| 435 | { |
| 436 | if (napi_schedule_prep(napi)) { |
| 437 | __napi_schedule(napi); |
| 438 | return 1; |
| 439 | } |
| 440 | return 0; |
| 441 | } |
| 442 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 443 | /** |
| 444 | * napi_complete - NAPI processing complete |
| 445 | * @n: napi context |
| 446 | * |
| 447 | * Mark NAPI processing as complete. |
| 448 | */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 449 | extern void __napi_complete(struct napi_struct *n); |
| 450 | extern void napi_complete(struct napi_struct *n); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 451 | |
| 452 | /** |
| 453 | * napi_disable - prevent NAPI from scheduling |
| 454 | * @n: napi context |
| 455 | * |
| 456 | * Stop NAPI from being scheduled on this context. |
| 457 | * Waits till any outstanding processing completes. |
| 458 | */ |
| 459 | static inline void napi_disable(struct napi_struct *n) |
| 460 | { |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 461 | set_bit(NAPI_STATE_DISABLE, &n->state); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 462 | while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) |
Benjamin Herrenschmidt | 43cc738 | 2007-10-26 04:23:22 -0700 | [diff] [blame] | 463 | msleep(1); |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 464 | clear_bit(NAPI_STATE_DISABLE, &n->state); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 465 | } |
| 466 | |
| 467 | /** |
| 468 | * napi_enable - enable NAPI scheduling |
| 469 | * @n: napi context |
| 470 | * |
| 471 | * Resume NAPI from being scheduled on this context. |
| 472 | * Must be paired with napi_disable. |
| 473 | */ |
| 474 | static inline void napi_enable(struct napi_struct *n) |
| 475 | { |
| 476 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); |
| 477 | smp_mb__before_clear_bit(); |
| 478 | clear_bit(NAPI_STATE_SCHED, &n->state); |
| 479 | } |
| 480 | |
Stephen Hemminger | c264c3d | 2007-10-17 13:26:41 -0700 | [diff] [blame] | 481 | #ifdef CONFIG_SMP |
| 482 | /** |
| 483 | * napi_synchronize - wait until NAPI is not running |
| 484 | * @n: napi context |
| 485 | * |
| 486 | * Wait until NAPI is done being scheduled on this context. |
| 487 | * Waits till any outstanding processing completes but |
| 488 | * does not disable future activations. |
| 489 | */ |
| 490 | static inline void napi_synchronize(const struct napi_struct *n) |
| 491 | { |
| 492 | while (test_bit(NAPI_STATE_SCHED, &n->state)) |
| 493 | msleep(1); |
| 494 | } |
| 495 | #else |
| 496 | # define napi_synchronize(n) barrier() |
| 497 | #endif |
| 498 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 499 | enum netdev_queue_state_t { |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 500 | __QUEUE_STATE_XOFF, |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 501 | __QUEUE_STATE_FROZEN, |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 502 | }; |
| 503 | |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 504 | struct netdev_queue { |
Eric Dumazet | 6a321cb | 2009-04-28 04:43:42 -0700 | [diff] [blame] | 505 | /* |
| 506 | * read mostly part |
| 507 | */ |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 508 | struct net_device *dev; |
David S. Miller | b0e1e64 | 2008-07-08 17:42:10 -0700 | [diff] [blame] | 509 | struct Qdisc *qdisc; |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 510 | unsigned long state; |
David S. Miller | b0e1e64 | 2008-07-08 17:42:10 -0700 | [diff] [blame] | 511 | struct Qdisc *qdisc_sleeping; |
Eric Dumazet | 6a321cb | 2009-04-28 04:43:42 -0700 | [diff] [blame] | 512 | /* |
| 513 | * write mostly part |
| 514 | */ |
| 515 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; |
| 516 | int xmit_lock_owner; |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 517 | /* |
| 518 | * please use this field instead of dev->trans_start |
| 519 | */ |
| 520 | unsigned long trans_start; |
Eric Dumazet | 7004bf2 | 2009-05-18 00:34:33 +0000 | [diff] [blame] | 521 | unsigned long tx_bytes; |
| 522 | unsigned long tx_packets; |
| 523 | unsigned long tx_dropped; |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 524 | } ____cacheline_aligned_in_smp; |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 525 | |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 526 | |
| 527 | /* |
| 528 | * This structure defines the management hooks for network devices. |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 529 | * The following hooks can be defined; unless noted otherwise, they are |
| 530 | * optional and can be filled with a null pointer. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 531 | * |
| 532 | * int (*ndo_init)(struct net_device *dev); |
| 533 | * This function is called once when network device is registered. |
| 534 | * The network device can use this to any late stage initializaton |
| 535 | * or semantic validattion. It can fail with an error code which will |
| 536 | * be propogated back to register_netdev |
| 537 | * |
| 538 | * void (*ndo_uninit)(struct net_device *dev); |
| 539 | * This function is called when device is unregistered or when registration |
| 540 | * fails. It is not called if init fails. |
| 541 | * |
| 542 | * int (*ndo_open)(struct net_device *dev); |
| 543 | * This function is called when network device transistions to the up |
| 544 | * state. |
| 545 | * |
| 546 | * int (*ndo_stop)(struct net_device *dev); |
| 547 | * This function is called when network device transistions to the down |
| 548 | * state. |
| 549 | * |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 550 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
| 551 | * struct net_device *dev); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 552 | * Called when a packet needs to be transmitted. |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 553 | * Must return NETDEV_TX_OK , NETDEV_TX_BUSY. |
| 554 | * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX) |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 555 | * Required can not be NULL. |
| 556 | * |
| 557 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb); |
| 558 | * Called to decide which queue to when device supports multiple |
| 559 | * transmit queues. |
| 560 | * |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 561 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
| 562 | * This function is called to allow device receiver to make |
| 563 | * changes to configuration when multicast or promiscious is enabled. |
| 564 | * |
| 565 | * void (*ndo_set_rx_mode)(struct net_device *dev); |
| 566 | * This function is called device changes address list filtering. |
| 567 | * |
| 568 | * void (*ndo_set_multicast_list)(struct net_device *dev); |
| 569 | * This function is called when the multicast address list changes. |
| 570 | * |
| 571 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); |
| 572 | * This function is called when the Media Access Control address |
Mike Rapoport | 37b607c | 2009-04-27 05:45:54 -0700 | [diff] [blame] | 573 | * needs to be changed. If this interface is not defined, the |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 574 | * mac address can not be changed. |
| 575 | * |
| 576 | * int (*ndo_validate_addr)(struct net_device *dev); |
| 577 | * Test if Media Access Control address is valid for the device. |
| 578 | * |
| 579 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); |
| 580 | * Called when a user request an ioctl which can't be handled by |
| 581 | * the generic interface code. If not defined ioctl's return |
| 582 | * not supported error code. |
| 583 | * |
| 584 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); |
| 585 | * Used to set network devices bus interface parameters. This interface |
| 586 | * is retained for legacy reason, new devices should use the bus |
| 587 | * interface (PCI) for low level management. |
| 588 | * |
| 589 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); |
| 590 | * Called when a user wants to change the Maximum Transfer Unit |
| 591 | * of a device. If not defined, any request to change MTU will |
| 592 | * will return an error. |
| 593 | * |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 594 | * void (*ndo_tx_timeout)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 595 | * Callback uses when the transmitter has not made any progress |
| 596 | * for dev->watchdog ticks. |
| 597 | * |
Wolfram Sang | d308e38 | 2009-10-07 13:53:11 -0700 | [diff] [blame] | 598 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 599 | * Called when a user wants to get the network device usage |
| 600 | * statistics. If not defined, the counters in dev->stats will |
| 601 | * be used. |
| 602 | * |
| 603 | * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp); |
| 604 | * If device support VLAN receive accleration |
| 605 | * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called |
| 606 | * when vlan groups for the device changes. Note: grp is NULL |
| 607 | * if no vlan's groups are being used. |
| 608 | * |
| 609 | * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid); |
| 610 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) |
| 611 | * this function is called when a VLAN id is registered. |
| 612 | * |
| 613 | * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid); |
| 614 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) |
| 615 | * this function is called when a VLAN id is unregistered. |
| 616 | * |
| 617 | * void (*ndo_poll_controller)(struct net_device *dev); |
| 618 | */ |
Stephen Hemminger | 47fd5b8 | 2008-11-25 00:20:43 -0800 | [diff] [blame] | 619 | #define HAVE_NET_DEVICE_OPS |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 620 | struct net_device_ops { |
| 621 | int (*ndo_init)(struct net_device *dev); |
| 622 | void (*ndo_uninit)(struct net_device *dev); |
| 623 | int (*ndo_open)(struct net_device *dev); |
| 624 | int (*ndo_stop)(struct net_device *dev); |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 625 | netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 626 | struct net_device *dev); |
| 627 | u16 (*ndo_select_queue)(struct net_device *dev, |
| 628 | struct sk_buff *skb); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 629 | void (*ndo_change_rx_flags)(struct net_device *dev, |
| 630 | int flags); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 631 | void (*ndo_set_rx_mode)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 632 | void (*ndo_set_multicast_list)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 633 | int (*ndo_set_mac_address)(struct net_device *dev, |
| 634 | void *addr); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 635 | int (*ndo_validate_addr)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 636 | int (*ndo_do_ioctl)(struct net_device *dev, |
| 637 | struct ifreq *ifr, int cmd); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 638 | int (*ndo_set_config)(struct net_device *dev, |
| 639 | struct ifmap *map); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 640 | int (*ndo_change_mtu)(struct net_device *dev, |
| 641 | int new_mtu); |
| 642 | int (*ndo_neigh_setup)(struct net_device *dev, |
| 643 | struct neigh_parms *); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 644 | void (*ndo_tx_timeout) (struct net_device *dev); |
| 645 | |
| 646 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
| 647 | |
| 648 | void (*ndo_vlan_rx_register)(struct net_device *dev, |
| 649 | struct vlan_group *grp); |
| 650 | void (*ndo_vlan_rx_add_vid)(struct net_device *dev, |
| 651 | unsigned short vid); |
| 652 | void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, |
| 653 | unsigned short vid); |
| 654 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 655 | void (*ndo_poll_controller)(struct net_device *dev); |
| 656 | #endif |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 657 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
Yi Zou | cb45439 | 2009-08-31 12:31:36 +0000 | [diff] [blame] | 658 | int (*ndo_fcoe_enable)(struct net_device *dev); |
| 659 | int (*ndo_fcoe_disable)(struct net_device *dev); |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 660 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
| 661 | u16 xid, |
| 662 | struct scatterlist *sgl, |
| 663 | unsigned int sgc); |
| 664 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, |
| 665 | u16 xid); |
Yi Zou | df5c794 | 2009-10-28 18:24:35 +0000 | [diff] [blame] | 666 | #define NETDEV_FCOE_WWNN 0 |
| 667 | #define NETDEV_FCOE_WWPN 1 |
| 668 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, |
| 669 | u64 *wwn, int type); |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 670 | #endif |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 671 | }; |
| 672 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 673 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | * The DEVICE structure. |
| 675 | * Actually, this whole structure is a big mistake. It mixes I/O |
| 676 | * data with strictly "high-level" data, and it has to know about |
| 677 | * almost every data structure used in the INET module. |
| 678 | * |
| 679 | * FIXME: cleanup struct net_device such that network protocol info |
| 680 | * moves out. |
| 681 | */ |
| 682 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 683 | struct net_device { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | |
| 685 | /* |
| 686 | * This is the first field of the "visible" part of this structure |
| 687 | * (i.e. as seen by users in the "Space.c" file). It is the name |
| 688 | * the interface. |
| 689 | */ |
| 690 | char name[IFNAMSIZ]; |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 691 | /* device name hash chain */ |
| 692 | struct hlist_node name_hlist; |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 693 | /* snmp alias */ |
| 694 | char *ifalias; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | |
| 696 | /* |
| 697 | * I/O specific fields |
| 698 | * FIXME: Merge these and struct ifmap into one |
| 699 | */ |
| 700 | unsigned long mem_end; /* shared mem end */ |
| 701 | unsigned long mem_start; /* shared mem start */ |
| 702 | unsigned long base_addr; /* device I/O address */ |
| 703 | unsigned int irq; /* device IRQ number */ |
| 704 | |
| 705 | /* |
| 706 | * Some hardware also needs these fields, but they are not |
| 707 | * part of the usual set specified in Space.c. |
| 708 | */ |
| 709 | |
| 710 | unsigned char if_port; /* Selectable AUI, TP,..*/ |
| 711 | unsigned char dma; /* DMA channel */ |
| 712 | |
| 713 | unsigned long state; |
| 714 | |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 715 | struct list_head dev_list; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 716 | struct list_head napi_list; |
Eric Dumazet | 44a0873 | 2009-10-27 07:03:04 +0000 | [diff] [blame] | 717 | struct list_head unreg_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 719 | /* Net device features */ |
| 720 | unsigned long features; |
| 721 | #define NETIF_F_SG 1 /* Scatter/gather IO. */ |
Stephen Hemminger | d212f87 | 2007-06-27 00:47:37 -0700 | [diff] [blame] | 722 | #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 723 | #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ |
| 724 | #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ |
Stephen Hemminger | d212f87 | 2007-06-27 00:47:37 -0700 | [diff] [blame] | 725 | #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 726 | #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ |
| 727 | #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ |
| 728 | #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ |
| 729 | #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ |
| 730 | #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ |
| 731 | #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ |
Herbert Xu | 37c3185 | 2006-06-22 03:07:29 -0700 | [diff] [blame] | 732 | #define NETIF_F_GSO 2048 /* Enable software GSO. */ |
Christian Borntraeger | e24eb52 | 2007-09-25 19:42:02 -0700 | [diff] [blame] | 733 | #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ |
| 734 | /* do not use LLTX in new drivers */ |
Eric W. Biederman | ce286d3 | 2007-09-12 13:53:49 +0200 | [diff] [blame] | 735 | #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 736 | #define NETIF_F_GRO 16384 /* Generic receive offload */ |
Jeff Garzik | 3ae7c0b | 2007-08-15 16:00:51 -0700 | [diff] [blame] | 737 | #define NETIF_F_LRO 32768 /* large receive offload */ |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 738 | |
Jesse Brandeburg | 8dc92f7 | 2009-04-27 22:35:52 +0000 | [diff] [blame] | 739 | /* the GSO_MASK reserves bits 16 through 23 */ |
Chris Leech | 01d5b2f | 2009-02-27 14:06:49 -0800 | [diff] [blame] | 740 | #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */ |
Jesse Brandeburg | 8dc92f7 | 2009-04-27 22:35:52 +0000 | [diff] [blame] | 741 | #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */ |
Yi Zou | bb2af4f | 2009-08-14 12:41:57 +0000 | [diff] [blame] | 742 | #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/ |
Chris Leech | 01d5b2f | 2009-02-27 14:06:49 -0800 | [diff] [blame] | 743 | |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 744 | /* Segmentation offload features */ |
Patrick McHardy | 289c79a | 2008-05-23 00:22:04 -0700 | [diff] [blame] | 745 | #define NETIF_F_GSO_SHIFT 16 |
Chris Leech | 43eb99c | 2009-02-27 14:06:43 -0800 | [diff] [blame] | 746 | #define NETIF_F_GSO_MASK 0x00ff0000 |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 747 | #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) |
Herbert Xu | f83ef8c | 2006-06-30 13:37:03 -0700 | [diff] [blame] | 748 | #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 749 | #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) |
Herbert Xu | f83ef8c | 2006-06-30 13:37:03 -0700 | [diff] [blame] | 750 | #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) |
| 751 | #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) |
Chris Leech | 01d5b2f | 2009-02-27 14:06:49 -0800 | [diff] [blame] | 752 | #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT) |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 753 | |
Herbert Xu | 78eb887 | 2006-08-17 18:22:32 -0700 | [diff] [blame] | 754 | /* List of features with software fallbacks. */ |
| 755 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) |
| 756 | |
Stephen Hemminger | d212f87 | 2007-06-27 00:47:37 -0700 | [diff] [blame] | 757 | |
Herbert Xu | 8648b30 | 2006-06-17 22:06:05 -0700 | [diff] [blame] | 758 | #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) |
Stephen Hemminger | d212f87 | 2007-06-27 00:47:37 -0700 | [diff] [blame] | 759 | #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) |
| 760 | #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) |
| 761 | #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) |
Herbert Xu | 8648b30 | 2006-06-17 22:06:05 -0700 | [diff] [blame] | 762 | |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 763 | /* |
| 764 | * If one device supports one of these features, then enable them |
| 765 | * for all in netdev_increment_features. |
| 766 | */ |
| 767 | #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 768 | NETIF_F_SG | NETIF_F_HIGHDMA | \ |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 769 | NETIF_F_FRAGLIST) |
| 770 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | /* Interface index. Unique device identifier */ |
| 772 | int ifindex; |
| 773 | int iflink; |
| 774 | |
Rusty Russell | c45d286 | 2007-03-28 14:29:08 -0700 | [diff] [blame] | 775 | struct net_device_stats stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | |
Johannes Berg | b86e028 | 2007-04-26 20:48:23 -0700 | [diff] [blame] | 777 | #ifdef CONFIG_WIRELESS_EXT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | /* List of functions to handle Wireless Extensions (instead of ioctl). |
| 779 | * See <net/iw_handler.h> for details. Jean II */ |
| 780 | const struct iw_handler_def * wireless_handlers; |
| 781 | /* Instance data managed by the core of Wireless Extensions. */ |
| 782 | struct iw_public_data * wireless_data; |
Johannes Berg | b86e028 | 2007-04-26 20:48:23 -0700 | [diff] [blame] | 783 | #endif |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 784 | /* Management operations */ |
| 785 | const struct net_device_ops *netdev_ops; |
Stephen Hemminger | 76fd859 | 2006-09-08 11:16:13 -0700 | [diff] [blame] | 786 | const struct ethtool_ops *ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 788 | /* Hardware header description */ |
| 789 | const struct header_ops *header_ops; |
| 790 | |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 791 | unsigned int flags; /* interface flags (a la BSD) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | unsigned short gflags; |
| 793 | unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */ |
| 794 | unsigned short padded; /* How much padding added by alloc_netdev() */ |
| 795 | |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 796 | unsigned char operstate; /* RFC2863 operstate */ |
| 797 | unsigned char link_mode; /* mapping policy to operstate */ |
| 798 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | unsigned mtu; /* interface MTU value */ |
| 800 | unsigned short type; /* interface hardware type */ |
| 801 | unsigned short hard_header_len; /* hardware hdr length */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 803 | /* extra head- and tailroom the hardware may need, but not in all cases |
| 804 | * can this be guaranteed, especially tailroom. Some cases also use |
| 805 | * LL_MAX_HEADER instead to allocate the skb. |
| 806 | */ |
| 807 | unsigned short needed_headroom; |
| 808 | unsigned short needed_tailroom; |
| 809 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | struct net_device *master; /* Pointer to master device of a group, |
| 811 | * which this device is member of. |
| 812 | */ |
| 813 | |
| 814 | /* Interface address info. */ |
Jon Wetzel | a6f9a70 | 2005-08-20 17:15:54 -0700 | [diff] [blame] | 815 | unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | unsigned char addr_len; /* hardware address length */ |
| 817 | unsigned short dev_id; /* for shared network cards */ |
| 818 | |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 819 | struct netdev_hw_addr_list uc; /* Secondary unicast |
| 820 | mac addresses */ |
Patrick McHardy | 4417da6 | 2007-06-27 01:28:10 -0700 | [diff] [blame] | 821 | int uc_promisc; |
Jiri Pirko | ccffad25 | 2009-05-22 23:22:17 +0000 | [diff] [blame] | 822 | spinlock_t addr_list_lock; |
Patrick McHardy | 3fba5a8 | 2007-06-27 01:26:58 -0700 | [diff] [blame] | 823 | struct dev_addr_list *mc_list; /* Multicast mac addresses */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | int mc_count; /* Number of installed mcasts */ |
Wang Chen | 9d45abe | 2008-06-17 21:12:48 -0700 | [diff] [blame] | 825 | unsigned int promiscuity; |
| 826 | unsigned int allmulti; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | |
| 829 | /* Protocol specific pointers */ |
| 830 | |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 831 | #ifdef CONFIG_NET_DSA |
| 832 | void *dsa_ptr; /* dsa specific data */ |
| 833 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | void *atalk_ptr; /* AppleTalk link */ |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 835 | void *ip_ptr; /* IPv4 specific data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | void *dn_ptr; /* DECnet specific data */ |
| 837 | void *ip6_ptr; /* IPv6 specific data */ |
| 838 | void *ec_ptr; /* Econet specific data */ |
| 839 | void *ax25_ptr; /* AX.25 specific data */ |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 840 | struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, |
| 841 | assign before registering */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 843 | /* |
| 844 | * Cache line mostly used on receive path (including eth_type_trans()) |
| 845 | */ |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 846 | unsigned long last_rx; /* Time of last Rx */ |
| 847 | /* Interface address info used in eth_type_trans() */ |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 848 | unsigned char *dev_addr; /* hw address, (before bcast |
| 849 | because most packets are |
| 850 | unicast) */ |
| 851 | |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 852 | struct netdev_hw_addr_list dev_addrs; /* list of device |
| 853 | hw addresses */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 855 | unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ |
| 856 | |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 857 | struct netdev_queue rx_queue; |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 858 | |
| 859 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 860 | |
| 861 | /* Number of TX queues allocated at alloc_netdev_mq() time */ |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 862 | unsigned int num_tx_queues; |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 863 | |
| 864 | /* Number of TX queues currently active in device */ |
| 865 | unsigned int real_num_tx_queues; |
| 866 | |
Patrick McHardy | af356af | 2009-09-04 06:41:18 +0000 | [diff] [blame] | 867 | /* root qdisc from userspace point of view */ |
| 868 | struct Qdisc *qdisc; |
| 869 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | unsigned long tx_queue_len; /* Max frames per queue allowed */ |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 871 | spinlock_t tx_global_lock; |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 872 | /* |
| 873 | * One part is mostly used on xmit path (device) |
| 874 | */ |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 875 | /* These may be needed for future network-power-down code. */ |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 876 | |
| 877 | /* |
| 878 | * trans_start here is expensive for high speed devices on SMP, |
| 879 | * please use netdev_queue->trans_start instead. |
| 880 | */ |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 881 | unsigned long trans_start; /* Time (in jiffies) of last Tx */ |
| 882 | |
| 883 | int watchdog_timeo; /* used by dev_watchdog() */ |
| 884 | struct timer_list watchdog_timer; |
| 885 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | /* Number of references to this device */ |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 887 | atomic_t refcnt ____cacheline_aligned_in_smp; |
| 888 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | /* delayed register/unregister */ |
| 890 | struct list_head todo_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | /* device index hash chain */ |
| 892 | struct hlist_node index_hlist; |
| 893 | |
Eric Dumazet | e014deb | 2009-11-17 05:59:21 +0000 | [diff] [blame] | 894 | struct list_head link_watch_list; |
Herbert Xu | 572a103 | 2007-05-08 18:34:17 -0700 | [diff] [blame] | 895 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | /* register/unregister state machine */ |
| 897 | enum { NETREG_UNINITIALIZED=0, |
Stephen Hemminger | b17a7c1 | 2006-05-10 13:21:17 -0700 | [diff] [blame] | 898 | NETREG_REGISTERED, /* completed register_netdevice */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
| 900 | NETREG_UNREGISTERED, /* completed unregister todo */ |
| 901 | NETREG_RELEASED, /* called free_netdev */ |
Benjamin Herrenschmidt | 937f1ba | 2009-01-14 21:05:05 -0800 | [diff] [blame] | 902 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | } reg_state; |
| 904 | |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 905 | /* Called from unregister, can be used to call free_netdev */ |
| 906 | void (*destructor)(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | #ifdef CONFIG_NETPOLL |
Jeff Moyer | 115c1d6 | 2005-06-22 22:05:31 -0700 | [diff] [blame] | 909 | struct netpoll_info *npinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | #endif |
David S. Miller | eae792b | 2008-07-15 03:03:33 -0700 | [diff] [blame] | 911 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 912 | #ifdef CONFIG_NET_NS |
Eric W. Biederman | 4a1c537 | 2007-09-12 11:56:32 +0200 | [diff] [blame] | 913 | /* Network namespace this network device is inside */ |
| 914 | struct net *nd_net; |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 915 | #endif |
Eric W. Biederman | 4a1c537 | 2007-09-12 11:56:32 +0200 | [diff] [blame] | 916 | |
David S. Miller | 4951704 | 2008-05-12 03:29:11 -0700 | [diff] [blame] | 917 | /* mid-layer private */ |
| 918 | void *ml_priv; |
| 919 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | /* bridge stuff */ |
| 921 | struct net_bridge_port *br_port; |
Patrick McHardy | b863ceb | 2007-07-14 18:55:06 -0700 | [diff] [blame] | 922 | /* macvlan */ |
| 923 | struct macvlan_port *macvlan_port; |
Patrick McHardy | eca9eba | 2008-07-05 21:26:13 -0700 | [diff] [blame] | 924 | /* GARP */ |
| 925 | struct garp_port *garp_port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | /* class/net/name entry */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 928 | struct device dev; |
Eric W. Biederman | 0c509a6 | 2009-10-29 14:18:21 +0000 | [diff] [blame] | 929 | /* space for optional device, statistics, and wireless sysfs groups */ |
| 930 | const struct attribute_group *sysfs_groups[4]; |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 931 | |
| 932 | /* rtnetlink link ops */ |
| 933 | const struct rtnl_link_ops *rtnl_link_ops; |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 934 | |
Patrick McHardy | 289c79a | 2008-05-23 00:22:04 -0700 | [diff] [blame] | 935 | /* VLAN feature mask */ |
| 936 | unsigned long vlan_features; |
| 937 | |
Peter P Waskiewicz Jr | 82cc1a7 | 2008-03-21 03:43:19 -0700 | [diff] [blame] | 938 | /* for setting kernel sock attribute on TCP connection setup */ |
| 939 | #define GSO_MAX_SIZE 65536 |
| 940 | unsigned int gso_max_size; |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 941 | |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 942 | #ifdef CONFIG_DCB |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 943 | /* Data Center Bridging netlink ops */ |
Stephen Hemminger | 3295354 | 2009-10-05 06:01:03 +0000 | [diff] [blame] | 944 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 945 | #endif |
| 946 | |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 947 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
| 948 | /* max exchange id for FCoE LRO by ddp */ |
| 949 | unsigned int fcoe_ddp_xid; |
| 950 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | }; |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 952 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | |
| 954 | #define NETDEV_ALIGN 32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 956 | static inline |
| 957 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, |
| 958 | unsigned int index) |
| 959 | { |
| 960 | return &dev->_tx[index]; |
| 961 | } |
| 962 | |
| 963 | static inline void netdev_for_each_tx_queue(struct net_device *dev, |
| 964 | void (*f)(struct net_device *, |
| 965 | struct netdev_queue *, |
| 966 | void *), |
| 967 | void *arg) |
| 968 | { |
| 969 | unsigned int i; |
| 970 | |
| 971 | for (i = 0; i < dev->num_tx_queues; i++) |
| 972 | f(dev, &dev->_tx[i], arg); |
| 973 | } |
| 974 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 975 | /* |
| 976 | * Net namespace inlines |
| 977 | */ |
| 978 | static inline |
| 979 | struct net *dev_net(const struct net_device *dev) |
| 980 | { |
| 981 | #ifdef CONFIG_NET_NS |
| 982 | return dev->nd_net; |
| 983 | #else |
| 984 | return &init_net; |
| 985 | #endif |
| 986 | } |
| 987 | |
| 988 | static inline |
Denis V. Lunev | f5aa23f | 2008-03-26 00:48:17 -0700 | [diff] [blame] | 989 | void dev_net_set(struct net_device *dev, struct net *net) |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 990 | { |
| 991 | #ifdef CONFIG_NET_NS |
Denis V. Lunev | f3005d7 | 2008-04-16 02:02:18 -0700 | [diff] [blame] | 992 | release_net(dev->nd_net); |
| 993 | dev->nd_net = hold_net(net); |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 994 | #endif |
| 995 | } |
| 996 | |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 997 | static inline bool netdev_uses_dsa_tags(struct net_device *dev) |
| 998 | { |
| 999 | #ifdef CONFIG_NET_DSA_TAG_DSA |
| 1000 | if (dev->dsa_ptr != NULL) |
| 1001 | return dsa_uses_dsa_tags(dev->dsa_ptr); |
| 1002 | #endif |
| 1003 | |
| 1004 | return 0; |
| 1005 | } |
| 1006 | |
Arnd Bergmann | 8a83a00 | 2010-01-30 12:23:03 +0000 | [diff] [blame^] | 1007 | #ifndef CONFIG_NET_NS |
| 1008 | static inline void skb_set_dev(struct sk_buff *skb, struct net_device *dev) |
| 1009 | { |
| 1010 | skb->dev = dev; |
| 1011 | } |
| 1012 | #else /* CONFIG_NET_NS */ |
| 1013 | void skb_set_dev(struct sk_buff *skb, struct net_device *dev); |
| 1014 | #endif |
| 1015 | |
Lennert Buytenhek | 396138f0 | 2008-10-07 13:46:07 +0000 | [diff] [blame] | 1016 | static inline bool netdev_uses_trailer_tags(struct net_device *dev) |
| 1017 | { |
| 1018 | #ifdef CONFIG_NET_DSA_TAG_TRAILER |
| 1019 | if (dev->dsa_ptr != NULL) |
| 1020 | return dsa_uses_trailer_tags(dev->dsa_ptr); |
| 1021 | #endif |
| 1022 | |
| 1023 | return 0; |
| 1024 | } |
| 1025 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1026 | /** |
| 1027 | * netdev_priv - access network device private data |
| 1028 | * @dev: network device |
| 1029 | * |
| 1030 | * Get network device private data |
| 1031 | */ |
Patrick McHardy | 6472ce6 | 2007-06-13 12:03:21 -0700 | [diff] [blame] | 1032 | static inline void *netdev_priv(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | { |
Eric Dumazet | 1ce8e7b | 2009-05-27 04:42:37 +0000 | [diff] [blame] | 1034 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | } |
| 1036 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | /* Set the sysfs physical device reference for the network logical device |
| 1038 | * if set prior to registration will cause a symlink during initialization. |
| 1039 | */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1040 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | |
Marcel Holtmann | 384912e | 2009-08-31 21:08:19 +0000 | [diff] [blame] | 1042 | /* Set the sysfs device type for the network logical device to allow |
| 1043 | * fin grained indentification of different network device types. For |
| 1044 | * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc. |
| 1045 | */ |
| 1046 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) |
| 1047 | |
Stephen Hemminger | 3b582cc | 2007-11-01 02:21:47 -0700 | [diff] [blame] | 1048 | /** |
| 1049 | * netif_napi_add - initialize a napi context |
| 1050 | * @dev: network device |
| 1051 | * @napi: napi context |
| 1052 | * @poll: polling function |
| 1053 | * @weight: default weight |
| 1054 | * |
| 1055 | * netif_napi_add() must be used to initialize a napi context prior to calling |
| 1056 | * *any* of the other napi related functions. |
| 1057 | */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1058 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
| 1059 | int (*poll)(struct napi_struct *, int), int weight); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1060 | |
Alexander Duyck | d815653 | 2008-07-08 15:13:05 -0700 | [diff] [blame] | 1061 | /** |
| 1062 | * netif_napi_del - remove a napi context |
| 1063 | * @napi: napi context |
| 1064 | * |
| 1065 | * netif_napi_del() removes a napi context from the network device napi list |
| 1066 | */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1067 | void netif_napi_del(struct napi_struct *napi); |
| 1068 | |
| 1069 | struct napi_gro_cb { |
Herbert Xu | 78a478d | 2009-05-26 18:50:21 +0000 | [diff] [blame] | 1070 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
| 1071 | void *frag0; |
| 1072 | |
Herbert Xu | 7489594 | 2009-05-26 18:50:27 +0000 | [diff] [blame] | 1073 | /* Length of frag0. */ |
| 1074 | unsigned int frag0_len; |
| 1075 | |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1076 | /* This indicates where we are processing relative to skb->data. */ |
| 1077 | int data_offset; |
| 1078 | |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1079 | /* This is non-zero if the packet may be of the same flow. */ |
| 1080 | int same_flow; |
| 1081 | |
| 1082 | /* This is non-zero if the packet cannot be merged with the new skb. */ |
| 1083 | int flush; |
| 1084 | |
| 1085 | /* Number of segments aggregated. */ |
| 1086 | int count; |
Herbert Xu | 5d38a07 | 2009-01-04 16:13:40 -0800 | [diff] [blame] | 1087 | |
| 1088 | /* Free the skb? */ |
| 1089 | int free; |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1090 | }; |
| 1091 | |
| 1092 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) |
Alexander Duyck | d815653 | 2008-07-08 15:13:05 -0700 | [diff] [blame] | 1093 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | struct packet_type { |
David S. Miller | f2ccd8f | 2005-08-09 19:34:12 -0700 | [diff] [blame] | 1095 | __be16 type; /* This is really htons(ether_type). */ |
| 1096 | struct net_device *dev; /* NULL is wildcarded here */ |
| 1097 | int (*func) (struct sk_buff *, |
| 1098 | struct net_device *, |
| 1099 | struct packet_type *, |
| 1100 | struct net_device *); |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 1101 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
| 1102 | int features); |
Herbert Xu | a430a43 | 2006-07-08 13:34:56 -0700 | [diff] [blame] | 1103 | int (*gso_send_check)(struct sk_buff *skb); |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1104 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
| 1105 | struct sk_buff *skb); |
| 1106 | int (*gro_complete)(struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | void *af_packet_priv; |
| 1108 | struct list_head list; |
| 1109 | }; |
| 1110 | |
| 1111 | #include <linux/interrupt.h> |
| 1112 | #include <linux/notifier.h> |
| 1113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | extern rwlock_t dev_base_lock; /* Device list lock */ |
| 1115 | |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1116 | |
| 1117 | #define for_each_netdev(net, d) \ |
| 1118 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) |
Eric W. Biederman | dcbccbd4 | 2009-11-29 22:25:26 +0000 | [diff] [blame] | 1119 | #define for_each_netdev_reverse(net, d) \ |
| 1120 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) |
Eric Dumazet | c6d14c8 | 2009-11-04 05:43:23 -0800 | [diff] [blame] | 1121 | #define for_each_netdev_rcu(net, d) \ |
| 1122 | 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] | 1123 | #define for_each_netdev_safe(net, d, n) \ |
| 1124 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) |
| 1125 | #define for_each_netdev_continue(net, d) \ |
| 1126 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) |
stephen hemminger | 254245d | 2009-11-10 07:54:47 +0000 | [diff] [blame] | 1127 | #define for_each_netdev_continue_rcu(net, d) \ |
| 1128 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 1129 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
| 1130 | |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 1131 | static inline struct net_device *next_net_device(struct net_device *dev) |
| 1132 | { |
| 1133 | struct list_head *lh; |
| 1134 | struct net *net; |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 1135 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1136 | net = dev_net(dev); |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 1137 | lh = dev->dev_list.next; |
| 1138 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
| 1139 | } |
| 1140 | |
Eric Dumazet | ce81b76 | 2009-11-11 17:34:30 +0000 | [diff] [blame] | 1141 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
| 1142 | { |
| 1143 | struct list_head *lh; |
| 1144 | struct net *net; |
| 1145 | |
| 1146 | net = dev_net(dev); |
| 1147 | lh = rcu_dereference(dev->dev_list.next); |
| 1148 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
| 1149 | } |
| 1150 | |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 1151 | static inline struct net_device *first_net_device(struct net *net) |
| 1152 | { |
| 1153 | return list_empty(&net->dev_base_head) ? NULL : |
| 1154 | net_device_entry(net->dev_base_head.next); |
| 1155 | } |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 1156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | extern int netdev_boot_setup_check(struct net_device *dev); |
| 1158 | extern unsigned long netdev_boot_base(const char *prefix, int unit); |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1159 | extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr); |
| 1160 | extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); |
| 1161 | extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | extern void dev_add_pack(struct packet_type *pt); |
| 1163 | extern void dev_remove_pack(struct packet_type *pt); |
| 1164 | extern void __dev_remove_pack(struct packet_type *pt); |
| 1165 | |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1166 | extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | unsigned short mask); |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1168 | 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] | 1169 | 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] | 1170 | 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] | 1171 | extern int dev_alloc_name(struct net_device *dev, const char *name); |
| 1172 | extern int dev_open(struct net_device *dev); |
| 1173 | extern int dev_close(struct net_device *dev); |
Ben Hutchings | 0187bdf | 2008-06-19 16:15:47 -0700 | [diff] [blame] | 1174 | extern void dev_disable_lro(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | extern int dev_queue_xmit(struct sk_buff *skb); |
| 1176 | extern int register_netdevice(struct net_device *dev); |
Eric Dumazet | 44a0873 | 2009-10-27 07:03:04 +0000 | [diff] [blame] | 1177 | extern void unregister_netdevice_queue(struct net_device *dev, |
| 1178 | struct list_head *head); |
Eric Dumazet | 9b5e383 | 2009-10-27 07:04:19 +0000 | [diff] [blame] | 1179 | extern void unregister_netdevice_many(struct list_head *head); |
Eric Dumazet | 44a0873 | 2009-10-27 07:03:04 +0000 | [diff] [blame] | 1180 | static inline void unregister_netdevice(struct net_device *dev) |
| 1181 | { |
| 1182 | unregister_netdevice_queue(dev, NULL); |
| 1183 | } |
| 1184 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | extern void free_netdev(struct net_device *dev); |
| 1186 | extern void synchronize_net(void); |
| 1187 | extern int register_netdevice_notifier(struct notifier_block *nb); |
| 1188 | extern int unregister_netdevice_notifier(struct notifier_block *nb); |
Benjamin Herrenschmidt | 937f1ba | 2009-01-14 21:05:05 -0800 | [diff] [blame] | 1189 | extern int init_dummy_netdev(struct net_device *dev); |
David S. Miller | 9d40bbd | 2009-03-04 23:46:25 -0800 | [diff] [blame] | 1190 | extern void netdev_resync_ops(struct net_device *dev); |
Benjamin Herrenschmidt | 937f1ba | 2009-01-14 21:05:05 -0800 | [diff] [blame] | 1191 | |
Eric W. Biederman | ad7379d | 2007-09-16 15:33:32 -0700 | [diff] [blame] | 1192 | extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1193 | extern struct net_device *dev_get_by_index(struct net *net, int ifindex); |
| 1194 | 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] | 1195 | extern struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | extern int dev_restart(struct net_device *dev); |
| 1197 | #ifdef CONFIG_NETPOLL_TRAP |
| 1198 | extern int netpoll_trap(void); |
| 1199 | #endif |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1200 | extern int skb_gro_receive(struct sk_buff **head, |
| 1201 | struct sk_buff *skb); |
Herbert Xu | 78a478d | 2009-05-26 18:50:21 +0000 | [diff] [blame] | 1202 | extern void skb_gro_reset_offset(struct sk_buff *skb); |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1203 | |
| 1204 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) |
| 1205 | { |
| 1206 | return NAPI_GRO_CB(skb)->data_offset; |
| 1207 | } |
| 1208 | |
| 1209 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) |
| 1210 | { |
| 1211 | return skb->len - NAPI_GRO_CB(skb)->data_offset; |
| 1212 | } |
| 1213 | |
| 1214 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) |
| 1215 | { |
| 1216 | NAPI_GRO_CB(skb)->data_offset += len; |
| 1217 | } |
| 1218 | |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 1219 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
| 1220 | unsigned int offset) |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1221 | { |
Herbert Xu | 78a478d | 2009-05-26 18:50:21 +0000 | [diff] [blame] | 1222 | return NAPI_GRO_CB(skb)->frag0 + offset; |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1223 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 1225 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
| 1226 | { |
| 1227 | return NAPI_GRO_CB(skb)->frag0_len < hlen; |
| 1228 | } |
| 1229 | |
| 1230 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
| 1231 | unsigned int offset) |
| 1232 | { |
| 1233 | NAPI_GRO_CB(skb)->frag0 = NULL; |
| 1234 | NAPI_GRO_CB(skb)->frag0_len = 0; |
| 1235 | return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL; |
| 1236 | } |
| 1237 | |
Herbert Xu | aa4b9f5 | 2009-02-08 18:00:37 +0000 | [diff] [blame] | 1238 | static inline void *skb_gro_mac_header(struct sk_buff *skb) |
| 1239 | { |
Herbert Xu | 78d3fd0 | 2009-05-26 18:50:23 +0000 | [diff] [blame] | 1240 | return NAPI_GRO_CB(skb)->frag0 ?: skb_mac_header(skb); |
Herbert Xu | aa4b9f5 | 2009-02-08 18:00:37 +0000 | [diff] [blame] | 1241 | } |
| 1242 | |
Herbert Xu | 36e7b1b | 2009-04-27 05:44:45 -0700 | [diff] [blame] | 1243 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
| 1244 | { |
Herbert Xu | 78d3fd0 | 2009-05-26 18:50:23 +0000 | [diff] [blame] | 1245 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
| 1246 | skb_network_offset(skb); |
Herbert Xu | 36e7b1b | 2009-04-27 05:44:45 -0700 | [diff] [blame] | 1247 | } |
| 1248 | |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 1249 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
| 1250 | unsigned short type, |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1251 | const void *daddr, const void *saddr, |
| 1252 | unsigned len) |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 1253 | { |
Ursula Braun | f1ecfd5 | 2007-10-22 16:16:14 +0200 | [diff] [blame] | 1254 | if (!dev->header_ops || !dev->header_ops->create) |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 1255 | return 0; |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1256 | |
| 1257 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 1258 | } |
| 1259 | |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 1260 | static inline int dev_parse_header(const struct sk_buff *skb, |
| 1261 | unsigned char *haddr) |
| 1262 | { |
| 1263 | const struct net_device *dev = skb->dev; |
| 1264 | |
Patrick McHardy | 1b83336 | 2007-10-18 05:09:28 -0700 | [diff] [blame] | 1265 | if (!dev->header_ops || !dev->header_ops->parse) |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 1266 | return 0; |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1267 | return dev->header_ops->parse(skb, haddr); |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 1268 | } |
| 1269 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
| 1271 | extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); |
| 1272 | static inline int unregister_gifconf(unsigned int family) |
| 1273 | { |
| 1274 | return register_gifconf(family, NULL); |
| 1275 | } |
| 1276 | |
| 1277 | /* |
| 1278 | * Incoming packets are placed on per-cpu queues so that |
| 1279 | * no locking is needed. |
| 1280 | */ |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 1281 | struct softnet_data { |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1282 | struct Qdisc *output_queue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | struct sk_buff_head input_pkt_queue; |
| 1284 | struct list_head poll_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | struct sk_buff *completion_queue; |
| 1286 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1287 | struct napi_struct backlog; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | }; |
| 1289 | |
| 1290 | DECLARE_PER_CPU(struct softnet_data,softnet_data); |
| 1291 | |
| 1292 | #define HAVE_NETIF_QUEUE |
| 1293 | |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1294 | extern void __netif_schedule(struct Qdisc *q); |
David S. Miller | 86d804e | 2008-07-08 23:11:25 -0700 | [diff] [blame] | 1295 | |
| 1296 | static inline void netif_schedule_queue(struct netdev_queue *txq) |
| 1297 | { |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 1298 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1299 | __netif_schedule(txq->qdisc); |
David S. Miller | 86d804e | 2008-07-08 23:11:25 -0700 | [diff] [blame] | 1300 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1302 | static inline void netif_tx_schedule_all(struct net_device *dev) |
| 1303 | { |
| 1304 | unsigned int i; |
| 1305 | |
| 1306 | for (i = 0; i < dev->num_tx_queues; i++) |
| 1307 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); |
| 1308 | } |
| 1309 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 1310 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
| 1311 | { |
| 1312 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); |
| 1313 | } |
| 1314 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1315 | /** |
| 1316 | * netif_start_queue - allow transmit |
| 1317 | * @dev: network device |
| 1318 | * |
| 1319 | * Allow upper layers to call the device hard_start_xmit routine. |
| 1320 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1321 | static inline void netif_start_queue(struct net_device *dev) |
| 1322 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1323 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | } |
| 1325 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1326 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
| 1327 | { |
| 1328 | unsigned int i; |
| 1329 | |
| 1330 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 1331 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 1332 | netif_tx_start_queue(txq); |
| 1333 | } |
| 1334 | } |
| 1335 | |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 1336 | static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | { |
| 1338 | #ifdef CONFIG_NETPOLL_TRAP |
Sergei Shtylyov | 5f286e1 | 2007-04-28 20:57:37 -0700 | [diff] [blame] | 1339 | if (netpoll_trap()) { |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 1340 | netif_tx_start_queue(dev_queue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | return; |
Sergei Shtylyov | 5f286e1 | 2007-04-28 20:57:37 -0700 | [diff] [blame] | 1342 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | #endif |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 1344 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state)) |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1345 | __netif_schedule(dev_queue->qdisc); |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 1346 | } |
| 1347 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 1348 | /** |
| 1349 | * netif_wake_queue - restart transmit |
| 1350 | * @dev: network device |
| 1351 | * |
| 1352 | * Allow upper layers to call the device hard_start_xmit routine. |
| 1353 | * Used for flow control when transmit resources are available. |
| 1354 | */ |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 1355 | static inline void netif_wake_queue(struct net_device *dev) |
| 1356 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1357 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | } |
| 1359 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1360 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
| 1361 | { |
| 1362 | unsigned int i; |
| 1363 | |
| 1364 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 1365 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 1366 | netif_tx_wake_queue(txq); |
| 1367 | } |
| 1368 | } |
| 1369 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 1370 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
| 1371 | { |
| 1372 | set_bit(__QUEUE_STATE_XOFF, &dev_queue->state); |
| 1373 | } |
| 1374 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1375 | /** |
| 1376 | * netif_stop_queue - stop transmitted packets |
| 1377 | * @dev: network device |
| 1378 | * |
| 1379 | * Stop upper layers calling the device hard_start_xmit routine. |
| 1380 | * Used for flow control when transmit resources are unavailable. |
| 1381 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | static inline void netif_stop_queue(struct net_device *dev) |
| 1383 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1384 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | } |
| 1386 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1387 | static inline void netif_tx_stop_all_queues(struct net_device *dev) |
| 1388 | { |
| 1389 | unsigned int i; |
| 1390 | |
| 1391 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 1392 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 1393 | netif_tx_stop_queue(txq); |
| 1394 | } |
| 1395 | } |
| 1396 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 1397 | static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
| 1398 | { |
| 1399 | return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state); |
| 1400 | } |
| 1401 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1402 | /** |
| 1403 | * netif_queue_stopped - test if transmit queue is flowblocked |
| 1404 | * @dev: network device |
| 1405 | * |
| 1406 | * Test if transmit queue on device is currently unable to send. |
| 1407 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | static inline int netif_queue_stopped(const struct net_device *dev) |
| 1409 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1410 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | } |
| 1412 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1413 | static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue) |
| 1414 | { |
| 1415 | return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state); |
| 1416 | } |
| 1417 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1418 | /** |
| 1419 | * netif_running - test if up |
| 1420 | * @dev: network device |
| 1421 | * |
| 1422 | * Test if the device has been brought up. |
| 1423 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | static inline int netif_running(const struct net_device *dev) |
| 1425 | { |
| 1426 | return test_bit(__LINK_STATE_START, &dev->state); |
| 1427 | } |
| 1428 | |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1429 | /* |
| 1430 | * Routines to manage the subqueues on a device. We only need start |
| 1431 | * stop, and a check if it's stopped. All other device management is |
| 1432 | * done at the overall netdevice level. |
| 1433 | * Also test the device if we're multiqueue. |
| 1434 | */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1435 | |
| 1436 | /** |
| 1437 | * netif_start_subqueue - allow sending packets on subqueue |
| 1438 | * @dev: network device |
| 1439 | * @queue_index: sub queue index |
| 1440 | * |
| 1441 | * Start individual transmit queue of a device with multiple transmit queues. |
| 1442 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1443 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
| 1444 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1445 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 1446 | |
| 1447 | netif_tx_start_queue(txq); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1448 | } |
| 1449 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1450 | /** |
| 1451 | * netif_stop_subqueue - stop sending packets on subqueue |
| 1452 | * @dev: network device |
| 1453 | * @queue_index: sub queue index |
| 1454 | * |
| 1455 | * Stop individual transmit queue of a device with multiple transmit queues. |
| 1456 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1457 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
| 1458 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1459 | 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] | 1460 | #ifdef CONFIG_NETPOLL_TRAP |
| 1461 | if (netpoll_trap()) |
| 1462 | return; |
| 1463 | #endif |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 1464 | netif_tx_stop_queue(txq); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1465 | } |
| 1466 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1467 | /** |
| 1468 | * netif_subqueue_stopped - test status of subqueue |
| 1469 | * @dev: network device |
| 1470 | * @queue_index: sub queue index |
| 1471 | * |
| 1472 | * Check individual transmit queue of a device with multiple transmit queues. |
| 1473 | */ |
Pavel Emelyanov | 668f895 | 2007-10-21 17:01:56 -0700 | [diff] [blame] | 1474 | static inline int __netif_subqueue_stopped(const struct net_device *dev, |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1475 | u16 queue_index) |
| 1476 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1477 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 1478 | |
| 1479 | return netif_tx_queue_stopped(txq); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1480 | } |
| 1481 | |
Pavel Emelyanov | 668f895 | 2007-10-21 17:01:56 -0700 | [diff] [blame] | 1482 | static inline int netif_subqueue_stopped(const struct net_device *dev, |
| 1483 | struct sk_buff *skb) |
| 1484 | { |
| 1485 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); |
| 1486 | } |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1487 | |
| 1488 | /** |
| 1489 | * netif_wake_subqueue - allow sending packets on subqueue |
| 1490 | * @dev: network device |
| 1491 | * @queue_index: sub queue index |
| 1492 | * |
| 1493 | * Resume individual transmit queue of a device with multiple transmit queues. |
| 1494 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1495 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) |
| 1496 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1497 | 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] | 1498 | #ifdef CONFIG_NETPOLL_TRAP |
| 1499 | if (netpoll_trap()) |
| 1500 | return; |
| 1501 | #endif |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1502 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state)) |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1503 | __netif_schedule(txq->qdisc); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1504 | } |
| 1505 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1506 | /** |
| 1507 | * netif_is_multiqueue - test if device has multiple transmit queues |
| 1508 | * @dev: network device |
| 1509 | * |
| 1510 | * Check if device has multiple transmit queues |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1511 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1512 | static inline int netif_is_multiqueue(const struct net_device *dev) |
| 1513 | { |
David S. Miller | 09e83b5 | 2008-07-17 01:52:12 -0700 | [diff] [blame] | 1514 | return (dev->num_tx_queues > 1); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1515 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1516 | |
| 1517 | /* Use this variant when it is known for sure that it |
Matti Linnanvuori | 0ef4730 | 2008-03-28 16:33:00 -0700 | [diff] [blame] | 1518 | * is executing from hardware interrupt context or with hardware interrupts |
| 1519 | * disabled. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1521 | extern void dev_kfree_skb_irq(struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | |
| 1523 | /* Use this variant in places where it could be invoked |
Matti Linnanvuori | 0ef4730 | 2008-03-28 16:33:00 -0700 | [diff] [blame] | 1524 | * from either hardware interrupt or other context, with hardware interrupts |
| 1525 | * either disabled or enabled. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | */ |
Denis Vlasenko | 5607943 | 2006-03-29 15:57:29 -0800 | [diff] [blame] | 1527 | extern void dev_kfree_skb_any(struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | |
| 1529 | #define HAVE_NETIF_RX 1 |
| 1530 | extern int netif_rx(struct sk_buff *skb); |
| 1531 | extern int netif_rx_ni(struct sk_buff *skb); |
| 1532 | #define HAVE_NETIF_RECEIVE_SKB 1 |
| 1533 | extern int netif_receive_skb(struct sk_buff *skb); |
Ben Hutchings | 5b252f0 | 2009-10-29 07:17:09 +0000 | [diff] [blame] | 1534 | extern gro_result_t dev_gro_receive(struct napi_struct *napi, |
Herbert Xu | 96e93ea | 2009-01-06 10:49:34 -0800 | [diff] [blame] | 1535 | struct sk_buff *skb); |
Ben Hutchings | c7c4b3b | 2009-10-29 21:36:53 -0700 | [diff] [blame] | 1536 | extern gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb); |
| 1537 | extern gro_result_t napi_gro_receive(struct napi_struct *napi, |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1538 | struct sk_buff *skb); |
Herbert Xu | 96e93ea | 2009-01-06 10:49:34 -0800 | [diff] [blame] | 1539 | extern void napi_reuse_skb(struct napi_struct *napi, |
| 1540 | struct sk_buff *skb); |
Herbert Xu | 76620aa | 2009-04-16 02:02:07 -0700 | [diff] [blame] | 1541 | extern struct sk_buff * napi_get_frags(struct napi_struct *napi); |
Ben Hutchings | c7c4b3b | 2009-10-29 21:36:53 -0700 | [diff] [blame] | 1542 | extern gro_result_t napi_frags_finish(struct napi_struct *napi, |
Ben Hutchings | 5b252f0 | 2009-10-29 07:17:09 +0000 | [diff] [blame] | 1543 | struct sk_buff *skb, |
| 1544 | gro_result_t ret); |
Herbert Xu | 76620aa | 2009-04-16 02:02:07 -0700 | [diff] [blame] | 1545 | extern struct sk_buff * napi_frags_skb(struct napi_struct *napi); |
Ben Hutchings | c7c4b3b | 2009-10-29 21:36:53 -0700 | [diff] [blame] | 1546 | extern gro_result_t napi_gro_frags(struct napi_struct *napi); |
Herbert Xu | 76620aa | 2009-04-16 02:02:07 -0700 | [diff] [blame] | 1547 | |
| 1548 | static inline void napi_free_frags(struct napi_struct *napi) |
| 1549 | { |
| 1550 | kfree_skb(napi->skb); |
| 1551 | napi->skb = NULL; |
| 1552 | } |
| 1553 | |
Patrick McHardy | bc1d041 | 2008-07-14 22:49:30 -0700 | [diff] [blame] | 1554 | extern void netif_nit_deliver(struct sk_buff *skb); |
Mitch Williams | c2373ee | 2005-11-09 10:34:45 -0800 | [diff] [blame] | 1555 | extern int dev_valid_name(const char *name); |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1556 | extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); |
| 1557 | extern int dev_ethtool(struct net *net, struct ifreq *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1558 | extern unsigned dev_get_flags(const struct net_device *); |
| 1559 | extern int dev_change_flags(struct net_device *, unsigned); |
Stephen Hemminger | cf04a4c7 | 2008-09-30 02:22:14 -0700 | [diff] [blame] | 1560 | extern int dev_change_name(struct net_device *, const char *); |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 1561 | 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] | 1562 | extern int dev_change_net_namespace(struct net_device *, |
| 1563 | struct net *, const char *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | extern int dev_set_mtu(struct net_device *, int); |
| 1565 | extern int dev_set_mac_address(struct net_device *, |
| 1566 | struct sockaddr *); |
Herbert Xu | f6a78bf | 2006-06-22 02:57:17 -0700 | [diff] [blame] | 1567 | extern int dev_hard_start_xmit(struct sk_buff *skb, |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1568 | struct net_device *dev, |
| 1569 | struct netdev_queue *txq); |
Arnd Bergmann | 4454096 | 2009-11-26 06:07:08 +0000 | [diff] [blame] | 1570 | extern int dev_forward_skb(struct net_device *dev, |
| 1571 | struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 1573 | extern int netdev_budget; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1574 | |
| 1575 | /* Called by rtnetlink.c:rtnl_unlock() */ |
| 1576 | extern void netdev_run_todo(void); |
| 1577 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1578 | /** |
| 1579 | * dev_put - release reference to device |
| 1580 | * @dev: network device |
| 1581 | * |
Benjamin Thery | 9ef4429 | 2007-10-10 21:18:17 -0700 | [diff] [blame] | 1582 | * Release reference to device to allow it to be freed. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1583 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1584 | static inline void dev_put(struct net_device *dev) |
| 1585 | { |
| 1586 | atomic_dec(&dev->refcnt); |
| 1587 | } |
| 1588 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1589 | /** |
| 1590 | * dev_hold - get reference to device |
| 1591 | * @dev: network device |
| 1592 | * |
Benjamin Thery | 9ef4429 | 2007-10-10 21:18:17 -0700 | [diff] [blame] | 1593 | * Hold reference to device to keep it from being freed. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1594 | */ |
Stephen Hemminger | 1533306 | 2006-03-20 22:32:28 -0800 | [diff] [blame] | 1595 | static inline void dev_hold(struct net_device *dev) |
| 1596 | { |
| 1597 | atomic_inc(&dev->refcnt); |
| 1598 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | |
| 1600 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on |
| 1601 | * and _off may be called from IRQ context, but it is caller |
| 1602 | * who is responsible for serialization of these calls. |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1603 | * |
| 1604 | * The name carrier is inappropriate, these functions should really be |
| 1605 | * called netif_lowerlayer_*() because they represent the state of any |
| 1606 | * kind of lower layer not just hardware media. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | */ |
| 1608 | |
| 1609 | extern void linkwatch_fire_event(struct net_device *dev); |
Eric Dumazet | e014deb | 2009-11-17 05:59:21 +0000 | [diff] [blame] | 1610 | extern void linkwatch_forget_dev(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1612 | /** |
| 1613 | * netif_carrier_ok - test if carrier present |
| 1614 | * @dev: network device |
| 1615 | * |
| 1616 | * Check if carrier is present on device |
| 1617 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1618 | static inline int netif_carrier_ok(const struct net_device *dev) |
| 1619 | { |
| 1620 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); |
| 1621 | } |
| 1622 | |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 1623 | extern unsigned long dev_trans_start(struct net_device *dev); |
| 1624 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | extern void __netdev_watchdog_up(struct net_device *dev); |
| 1626 | |
Denis Vlasenko | 0a242ef | 2005-08-11 15:32:53 -0700 | [diff] [blame] | 1627 | extern void netif_carrier_on(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | |
Denis Vlasenko | 0a242ef | 2005-08-11 15:32:53 -0700 | [diff] [blame] | 1629 | extern void netif_carrier_off(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1630 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1631 | /** |
| 1632 | * netif_dormant_on - mark device as dormant. |
| 1633 | * @dev: network device |
| 1634 | * |
| 1635 | * Mark device as dormant (as per RFC2863). |
| 1636 | * |
| 1637 | * The dormant state indicates that the relevant interface is not |
| 1638 | * actually in a condition to pass packets (i.e., it is not 'up') but is |
| 1639 | * in a "pending" state, waiting for some external event. For "on- |
| 1640 | * demand" interfaces, this new state identifies the situation where the |
| 1641 | * interface is waiting for events to place it in the up state. |
| 1642 | * |
| 1643 | */ |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1644 | static inline void netif_dormant_on(struct net_device *dev) |
| 1645 | { |
| 1646 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) |
| 1647 | linkwatch_fire_event(dev); |
| 1648 | } |
| 1649 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1650 | /** |
| 1651 | * netif_dormant_off - set device as not dormant. |
| 1652 | * @dev: network device |
| 1653 | * |
| 1654 | * Device is not in dormant state. |
| 1655 | */ |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1656 | static inline void netif_dormant_off(struct net_device *dev) |
| 1657 | { |
| 1658 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) |
| 1659 | linkwatch_fire_event(dev); |
| 1660 | } |
| 1661 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1662 | /** |
| 1663 | * netif_dormant - test if carrier present |
| 1664 | * @dev: network device |
| 1665 | * |
| 1666 | * Check if carrier is present on device |
| 1667 | */ |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1668 | static inline int netif_dormant(const struct net_device *dev) |
| 1669 | { |
| 1670 | return test_bit(__LINK_STATE_DORMANT, &dev->state); |
| 1671 | } |
| 1672 | |
| 1673 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1674 | /** |
| 1675 | * netif_oper_up - test if device is operational |
| 1676 | * @dev: network device |
| 1677 | * |
| 1678 | * Check if carrier is operational |
| 1679 | */ |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 1680 | static inline int netif_oper_up(const struct net_device *dev) |
| 1681 | { |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1682 | return (dev->operstate == IF_OPER_UP || |
| 1683 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); |
| 1684 | } |
| 1685 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1686 | /** |
| 1687 | * netif_device_present - is device available or removed |
| 1688 | * @dev: network device |
| 1689 | * |
| 1690 | * Check if device has not been removed from system. |
| 1691 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1692 | static inline int netif_device_present(struct net_device *dev) |
| 1693 | { |
| 1694 | return test_bit(__LINK_STATE_PRESENT, &dev->state); |
| 1695 | } |
| 1696 | |
Denis Vlasenko | 5607943 | 2006-03-29 15:57:29 -0800 | [diff] [blame] | 1697 | extern void netif_device_detach(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | |
Denis Vlasenko | 5607943 | 2006-03-29 15:57:29 -0800 | [diff] [blame] | 1699 | extern void netif_device_attach(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | |
| 1701 | /* |
| 1702 | * Network interface message level settings |
| 1703 | */ |
| 1704 | #define HAVE_NETIF_MSG 1 |
| 1705 | |
| 1706 | enum { |
| 1707 | NETIF_MSG_DRV = 0x0001, |
| 1708 | NETIF_MSG_PROBE = 0x0002, |
| 1709 | NETIF_MSG_LINK = 0x0004, |
| 1710 | NETIF_MSG_TIMER = 0x0008, |
| 1711 | NETIF_MSG_IFDOWN = 0x0010, |
| 1712 | NETIF_MSG_IFUP = 0x0020, |
| 1713 | NETIF_MSG_RX_ERR = 0x0040, |
| 1714 | NETIF_MSG_TX_ERR = 0x0080, |
| 1715 | NETIF_MSG_TX_QUEUED = 0x0100, |
| 1716 | NETIF_MSG_INTR = 0x0200, |
| 1717 | NETIF_MSG_TX_DONE = 0x0400, |
| 1718 | NETIF_MSG_RX_STATUS = 0x0800, |
| 1719 | NETIF_MSG_PKTDATA = 0x1000, |
| 1720 | NETIF_MSG_HW = 0x2000, |
| 1721 | NETIF_MSG_WOL = 0x4000, |
| 1722 | }; |
| 1723 | |
| 1724 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) |
| 1725 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) |
| 1726 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) |
| 1727 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) |
| 1728 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) |
| 1729 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) |
| 1730 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) |
| 1731 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) |
| 1732 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) |
| 1733 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) |
| 1734 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) |
| 1735 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) |
| 1736 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) |
| 1737 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) |
| 1738 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) |
| 1739 | |
| 1740 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) |
| 1741 | { |
| 1742 | /* use default */ |
| 1743 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) |
| 1744 | return default_msg_enable_bits; |
| 1745 | if (debug_value == 0) /* no output */ |
| 1746 | return 0; |
| 1747 | /* set low N bits */ |
| 1748 | return (1 << debug_value) - 1; |
| 1749 | } |
| 1750 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 1751 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 1752 | { |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 1753 | spin_lock(&txq->_xmit_lock); |
| 1754 | txq->xmit_lock_owner = cpu; |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 1755 | } |
| 1756 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1757 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
| 1758 | { |
| 1759 | spin_lock_bh(&txq->_xmit_lock); |
| 1760 | txq->xmit_lock_owner = smp_processor_id(); |
| 1761 | } |
| 1762 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 1763 | static inline int __netif_tx_trylock(struct netdev_queue *txq) |
| 1764 | { |
| 1765 | int ok = spin_trylock(&txq->_xmit_lock); |
| 1766 | if (likely(ok)) |
| 1767 | txq->xmit_lock_owner = smp_processor_id(); |
| 1768 | return ok; |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 1769 | } |
| 1770 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 1771 | static inline void __netif_tx_unlock(struct netdev_queue *txq) |
| 1772 | { |
| 1773 | txq->xmit_lock_owner = -1; |
| 1774 | spin_unlock(&txq->_xmit_lock); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 1775 | } |
| 1776 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1777 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) |
| 1778 | { |
| 1779 | txq->xmit_lock_owner = -1; |
| 1780 | spin_unlock_bh(&txq->_xmit_lock); |
| 1781 | } |
| 1782 | |
Eric Dumazet | 08baf56 | 2009-05-25 22:58:01 -0700 | [diff] [blame] | 1783 | static inline void txq_trans_update(struct netdev_queue *txq) |
| 1784 | { |
| 1785 | if (txq->xmit_lock_owner != -1) |
| 1786 | txq->trans_start = jiffies; |
| 1787 | } |
| 1788 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1789 | /** |
| 1790 | * netif_tx_lock - grab network device transmit lock |
| 1791 | * @dev: network device |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1792 | * |
| 1793 | * Get network device transmit lock |
| 1794 | */ |
| 1795 | static inline void netif_tx_lock(struct net_device *dev) |
| 1796 | { |
| 1797 | unsigned int i; |
| 1798 | int cpu; |
| 1799 | |
| 1800 | spin_lock(&dev->tx_global_lock); |
| 1801 | cpu = smp_processor_id(); |
| 1802 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 1803 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 1804 | |
| 1805 | /* We are the only thread of execution doing a |
| 1806 | * freeze, but we have to grab the _xmit_lock in |
| 1807 | * order to synchronize with threads which are in |
| 1808 | * the ->hard_start_xmit() handler and already |
| 1809 | * checked the frozen bit. |
| 1810 | */ |
| 1811 | __netif_tx_lock(txq, cpu); |
| 1812 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
| 1813 | __netif_tx_unlock(txq); |
| 1814 | } |
| 1815 | } |
| 1816 | |
| 1817 | static inline void netif_tx_lock_bh(struct net_device *dev) |
| 1818 | { |
| 1819 | local_bh_disable(); |
| 1820 | netif_tx_lock(dev); |
| 1821 | } |
| 1822 | |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 1823 | static inline void netif_tx_unlock(struct net_device *dev) |
| 1824 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1825 | unsigned int i; |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 1826 | |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1827 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 1828 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1829 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1830 | /* No need to grab the _xmit_lock here. If the |
| 1831 | * queue is not stopped for another reason, we |
| 1832 | * force a schedule. |
| 1833 | */ |
| 1834 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 1835 | netif_schedule_queue(txq); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1836 | } |
| 1837 | spin_unlock(&dev->tx_global_lock); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 1838 | } |
| 1839 | |
| 1840 | static inline void netif_tx_unlock_bh(struct net_device *dev) |
| 1841 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1842 | netif_tx_unlock(dev); |
| 1843 | local_bh_enable(); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 1844 | } |
| 1845 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 1846 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 1847 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 1848 | __netif_tx_lock(txq, cpu); \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 1849 | } \ |
| 1850 | } |
| 1851 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 1852 | #define HARD_TX_UNLOCK(dev, txq) { \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 1853 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 1854 | __netif_tx_unlock(txq); \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 1855 | } \ |
| 1856 | } |
| 1857 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | static inline void netif_tx_disable(struct net_device *dev) |
| 1859 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1860 | unsigned int i; |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1861 | int cpu; |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1862 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1863 | local_bh_disable(); |
| 1864 | cpu = smp_processor_id(); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1865 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 1866 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1867 | |
| 1868 | __netif_tx_lock(txq, cpu); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1869 | netif_tx_stop_queue(txq); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1870 | __netif_tx_unlock(txq); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1871 | } |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1872 | local_bh_enable(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | } |
| 1874 | |
David S. Miller | e308a5d | 2008-07-15 00:13:44 -0700 | [diff] [blame] | 1875 | static inline void netif_addr_lock(struct net_device *dev) |
| 1876 | { |
| 1877 | spin_lock(&dev->addr_list_lock); |
| 1878 | } |
| 1879 | |
| 1880 | static inline void netif_addr_lock_bh(struct net_device *dev) |
| 1881 | { |
| 1882 | spin_lock_bh(&dev->addr_list_lock); |
| 1883 | } |
| 1884 | |
| 1885 | static inline void netif_addr_unlock(struct net_device *dev) |
| 1886 | { |
| 1887 | spin_unlock(&dev->addr_list_lock); |
| 1888 | } |
| 1889 | |
| 1890 | static inline void netif_addr_unlock_bh(struct net_device *dev) |
| 1891 | { |
| 1892 | spin_unlock_bh(&dev->addr_list_lock); |
| 1893 | } |
| 1894 | |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 1895 | /* |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 1896 | * dev_addrs walker. Should be used only for read access. Call with |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 1897 | * rcu_read_lock held. |
| 1898 | */ |
| 1899 | #define for_each_dev_addr(dev, ha) \ |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 1900 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 1901 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1902 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
| 1903 | |
| 1904 | extern void ether_setup(struct net_device *dev); |
| 1905 | |
| 1906 | /* Support for loadable net-drivers */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1907 | extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, |
| 1908 | void (*setup)(struct net_device *), |
| 1909 | unsigned int queue_count); |
| 1910 | #define alloc_netdev(sizeof_priv, name, setup) \ |
| 1911 | alloc_netdev_mq(sizeof_priv, name, setup, 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1912 | extern int register_netdev(struct net_device *dev); |
| 1913 | extern void unregister_netdev(struct net_device *dev); |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 1914 | |
| 1915 | /* Functions used for device addresses handling */ |
| 1916 | extern int dev_addr_add(struct net_device *dev, unsigned char *addr, |
| 1917 | unsigned char addr_type); |
| 1918 | extern int dev_addr_del(struct net_device *dev, unsigned char *addr, |
| 1919 | unsigned char addr_type); |
| 1920 | extern int dev_addr_add_multiple(struct net_device *to_dev, |
| 1921 | struct net_device *from_dev, |
| 1922 | unsigned char addr_type); |
| 1923 | extern int dev_addr_del_multiple(struct net_device *to_dev, |
| 1924 | struct net_device *from_dev, |
| 1925 | unsigned char addr_type); |
| 1926 | |
Patrick McHardy | 4417da6 | 2007-06-27 01:28:10 -0700 | [diff] [blame] | 1927 | /* Functions used for secondary unicast and multicast support */ |
| 1928 | extern void dev_set_rx_mode(struct net_device *dev); |
| 1929 | extern void __dev_set_rx_mode(struct net_device *dev); |
Jiri Pirko | ccffad25 | 2009-05-22 23:22:17 +0000 | [diff] [blame] | 1930 | extern int dev_unicast_delete(struct net_device *dev, void *addr); |
| 1931 | extern int dev_unicast_add(struct net_device *dev, void *addr); |
Chris Leech | e83a2ea | 2008-01-31 16:53:23 -0800 | [diff] [blame] | 1932 | extern int dev_unicast_sync(struct net_device *to, struct net_device *from); |
| 1933 | extern void dev_unicast_unsync(struct net_device *to, struct net_device *from); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1934 | extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all); |
| 1935 | extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly); |
Patrick McHardy | a0a400d | 2007-07-14 18:52:02 -0700 | [diff] [blame] | 1936 | extern int dev_mc_sync(struct net_device *to, struct net_device *from); |
| 1937 | extern void dev_mc_unsync(struct net_device *to, struct net_device *from); |
Patrick McHardy | 61cbc2f | 2007-06-30 13:35:52 -0700 | [diff] [blame] | 1938 | extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all); |
| 1939 | extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly); |
Chris Leech | e83a2ea | 2008-01-31 16:53:23 -0800 | [diff] [blame] | 1940 | extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); |
| 1941 | extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); |
Wang Chen | dad9b33 | 2008-06-18 01:48:28 -0700 | [diff] [blame] | 1942 | extern int dev_set_promiscuity(struct net_device *dev, int inc); |
| 1943 | extern int dev_set_allmulti(struct net_device *dev, int inc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1944 | extern void netdev_state_change(struct net_device *dev); |
Moni Shoua | 75c7850 | 2009-09-15 02:37:40 -0700 | [diff] [blame] | 1945 | extern void netdev_bonding_change(struct net_device *dev, |
| 1946 | unsigned long event); |
Stephen Hemminger | d8a33ac | 2005-05-29 14:13:47 -0700 | [diff] [blame] | 1947 | extern void netdev_features_change(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | /* Load a device via the kmod */ |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1949 | extern void dev_load(struct net *net, const char *name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | extern void dev_mcast_init(void); |
Stephen Hemminger | eeda3fd | 2008-11-19 21:40:23 -0800 | [diff] [blame] | 1951 | extern const struct net_device_stats *dev_get_stats(struct net_device *dev); |
Eric Dumazet | d83345a | 2009-11-16 03:36:51 +0000 | [diff] [blame] | 1952 | extern void dev_txq_stats_fold(const struct net_device *dev, struct net_device_stats *stats); |
Stephen Hemminger | eeda3fd | 2008-11-19 21:40:23 -0800 | [diff] [blame] | 1953 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | extern int netdev_max_backlog; |
| 1955 | extern int weight_p; |
| 1956 | extern int netdev_set_master(struct net_device *dev, struct net_device *master); |
Patrick McHardy | 84fa793 | 2006-08-29 16:44:56 -0700 | [diff] [blame] | 1957 | extern int skb_checksum_help(struct sk_buff *skb); |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 1958 | extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 1959 | #ifdef CONFIG_BUG |
| 1960 | extern void netdev_rx_csum_fault(struct net_device *dev); |
| 1961 | #else |
| 1962 | static inline void netdev_rx_csum_fault(struct net_device *dev) |
| 1963 | { |
| 1964 | } |
| 1965 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1966 | /* rx skb timestamps */ |
| 1967 | extern void net_enable_timestamp(void); |
| 1968 | extern void net_disable_timestamp(void); |
| 1969 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 1970 | #ifdef CONFIG_PROC_FS |
| 1971 | extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); |
| 1972 | extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); |
| 1973 | extern void dev_seq_stop(struct seq_file *seq, void *v); |
| 1974 | #endif |
| 1975 | |
Jay Vosburgh | b8a9787 | 2008-06-13 18:12:04 -0700 | [diff] [blame] | 1976 | extern int netdev_class_create_file(struct class_attribute *class_attr); |
| 1977 | extern void netdev_class_remove_file(struct class_attribute *class_attr); |
| 1978 | |
Stephen Hemminger | cf04a4c7 | 2008-09-30 02:22:14 -0700 | [diff] [blame] | 1979 | extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len); |
Arjan van de Ven | 6579e57 | 2008-07-21 13:31:48 -0700 | [diff] [blame] | 1980 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 1981 | extern void linkwatch_run_queue(void); |
| 1982 | |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 1983 | unsigned long netdev_increment_features(unsigned long all, unsigned long one, |
| 1984 | unsigned long mask); |
| 1985 | unsigned long netdev_fix_features(unsigned long features, const char *name); |
Herbert Xu | 7f353bf | 2007-08-10 15:47:58 -0700 | [diff] [blame] | 1986 | |
Patrick Mullaney | fc4a748 | 2009-12-03 15:59:22 -0800 | [diff] [blame] | 1987 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
| 1988 | struct net_device *dev); |
| 1989 | |
Herbert Xu | bcd7611 | 2006-06-30 13:36:35 -0700 | [diff] [blame] | 1990 | static inline int net_gso_ok(int features, int gso_type) |
| 1991 | { |
| 1992 | int feature = gso_type << NETIF_F_GSO_SHIFT; |
| 1993 | return (features & feature) == feature; |
| 1994 | } |
| 1995 | |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 1996 | static inline int skb_gso_ok(struct sk_buff *skb, int features) |
| 1997 | { |
Herbert Xu | 278b251 | 2009-06-03 21:20:51 -0700 | [diff] [blame] | 1998 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
David S. Miller | a5bd8a1 | 2009-06-09 00:17:27 -0700 | [diff] [blame] | 1999 | (!skb_has_frags(skb) || (features & NETIF_F_FRAGLIST)); |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 2000 | } |
| 2001 | |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 2002 | static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) |
| 2003 | { |
Herbert Xu | a430a43 | 2006-07-08 13:34:56 -0700 | [diff] [blame] | 2004 | return skb_is_gso(skb) && |
| 2005 | (!skb_gso_ok(skb, dev->features) || |
Patrick McHardy | 84fa793 | 2006-08-29 16:44:56 -0700 | [diff] [blame] | 2006 | unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 2007 | } |
| 2008 | |
Peter P Waskiewicz Jr | 82cc1a7 | 2008-03-21 03:43:19 -0700 | [diff] [blame] | 2009 | static inline void netif_set_gso_max_size(struct net_device *dev, |
| 2010 | unsigned int size) |
| 2011 | { |
| 2012 | dev->gso_max_size = size; |
| 2013 | } |
| 2014 | |
Jiri Pirko | 5d4e039 | 2009-05-28 01:05:00 +0000 | [diff] [blame] | 2015 | static inline void skb_bond_set_mac_by_master(struct sk_buff *skb, |
| 2016 | struct net_device *master) |
| 2017 | { |
| 2018 | if (skb->pkt_type == PACKET_HOST) { |
| 2019 | u16 *dest = (u16 *) eth_hdr(skb)->h_dest; |
| 2020 | |
| 2021 | memcpy(dest, master->dev_addr, ETH_ALEN); |
| 2022 | } |
| 2023 | } |
| 2024 | |
David S. Miller | 7ea49ed | 2006-08-14 17:08:36 -0700 | [diff] [blame] | 2025 | /* On bonding slaves other than the currently active slave, suppress |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2026 | * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and |
| 2027 | * ARP on active-backup slaves with arp_validate enabled. |
David S. Miller | 7ea49ed | 2006-08-14 17:08:36 -0700 | [diff] [blame] | 2028 | */ |
| 2029 | static inline int skb_bond_should_drop(struct sk_buff *skb) |
| 2030 | { |
| 2031 | struct net_device *dev = skb->dev; |
| 2032 | struct net_device *master = dev->master; |
| 2033 | |
Jay Vosburgh | 6cf3f41 | 2008-11-03 18:16:50 -0800 | [diff] [blame] | 2034 | if (master) { |
| 2035 | if (master->priv_flags & IFF_MASTER_ARPMON) |
| 2036 | dev->last_rx = jiffies; |
Jay Vosburgh | f5b2b96 | 2006-09-22 21:54:53 -0700 | [diff] [blame] | 2037 | |
Jiri Pirko | 5d4e039 | 2009-05-28 01:05:00 +0000 | [diff] [blame] | 2038 | if ((master->priv_flags & IFF_MASTER_ALB) && master->br_port) { |
| 2039 | /* Do address unmangle. The local destination address |
| 2040 | * will be always the one master has. Provides the right |
| 2041 | * functionality in a bridge. |
| 2042 | */ |
| 2043 | skb_bond_set_mac_by_master(skb, master); |
| 2044 | } |
| 2045 | |
Jay Vosburgh | 6cf3f41 | 2008-11-03 18:16:50 -0800 | [diff] [blame] | 2046 | if (dev->priv_flags & IFF_SLAVE_INACTIVE) { |
| 2047 | if ((dev->priv_flags & IFF_SLAVE_NEEDARP) && |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 2048 | skb->protocol == __cpu_to_be16(ETH_P_ARP)) |
David S. Miller | 7ea49ed | 2006-08-14 17:08:36 -0700 | [diff] [blame] | 2049 | return 0; |
David S. Miller | 7ea49ed | 2006-08-14 17:08:36 -0700 | [diff] [blame] | 2050 | |
Jay Vosburgh | 6cf3f41 | 2008-11-03 18:16:50 -0800 | [diff] [blame] | 2051 | if (master->priv_flags & IFF_MASTER_ALB) { |
| 2052 | if (skb->pkt_type != PACKET_BROADCAST && |
| 2053 | skb->pkt_type != PACKET_MULTICAST) |
| 2054 | return 0; |
| 2055 | } |
| 2056 | if (master->priv_flags & IFF_MASTER_8023AD && |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 2057 | skb->protocol == __cpu_to_be16(ETH_P_SLOW)) |
Jay Vosburgh | 6cf3f41 | 2008-11-03 18:16:50 -0800 | [diff] [blame] | 2058 | return 0; |
| 2059 | |
| 2060 | return 1; |
| 2061 | } |
David S. Miller | 7ea49ed | 2006-08-14 17:08:36 -0700 | [diff] [blame] | 2062 | } |
| 2063 | return 0; |
| 2064 | } |
| 2065 | |
Eric W. Biederman | 505d4f7 | 2008-11-07 22:54:20 -0800 | [diff] [blame] | 2066 | extern struct pernet_operations __net_initdata loopback_net_ops; |
Patrick McHardy | b1b67dd | 2009-04-20 04:49:28 +0000 | [diff] [blame] | 2067 | |
| 2068 | static inline int dev_ethtool_get_settings(struct net_device *dev, |
| 2069 | struct ethtool_cmd *cmd) |
| 2070 | { |
| 2071 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings) |
| 2072 | return -EOPNOTSUPP; |
| 2073 | return dev->ethtool_ops->get_settings(dev, cmd); |
| 2074 | } |
| 2075 | |
| 2076 | static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev) |
| 2077 | { |
| 2078 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum) |
| 2079 | return 0; |
| 2080 | return dev->ethtool_ops->get_rx_csum(dev); |
| 2081 | } |
| 2082 | |
| 2083 | static inline u32 dev_ethtool_get_flags(struct net_device *dev) |
| 2084 | { |
| 2085 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_flags) |
| 2086 | return 0; |
| 2087 | return dev->ethtool_ops->get_flags(dev); |
| 2088 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2089 | #endif /* __KERNEL__ */ |
| 2090 | |
Jiri Pirko | 385a154 | 2009-05-27 15:48:07 -0700 | [diff] [blame] | 2091 | #endif /* _LINUX_NETDEVICE_H */ |