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> |
Williams, Mitch A | 95c26df | 2010-02-10 01:43:46 +0000 | [diff] [blame] | 31 | #include <linux/if_link.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
| 33 | #ifdef __KERNEL__ |
Mark Gross | ed77134 | 2010-05-06 01:59:26 +0200 | [diff] [blame] | 34 | #include <linux/pm_qos_params.h> |
Al Viro | d7fe0f2 | 2006-12-03 23:15:30 -0500 | [diff] [blame] | 35 | #include <linux/timer.h> |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 36 | #include <linux/delay.h> |
Dmitri Vorobiev | cc0be32 | 2009-03-27 15:55:36 -0700 | [diff] [blame] | 37 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include <asm/atomic.h> |
| 39 | #include <asm/cache.h> |
| 40 | #include <asm/byteorder.h> |
| 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/device.h> |
| 43 | #include <linux/percpu.h> |
David S. Miller | 4d5b78c | 2009-05-06 16:52:51 -0700 | [diff] [blame] | 44 | #include <linux/rculist.h> |
Chris Leech | db21733 | 2006-06-17 21:24:58 -0700 | [diff] [blame] | 45 | #include <linux/dmaengine.h> |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 46 | #include <linux/workqueue.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Patrick McHardy | b1b67dd | 2009-04-20 04:49:28 +0000 | [diff] [blame] | 48 | #include <linux/ethtool.h> |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 49 | #include <net/net_namespace.h> |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 50 | #include <net/dsa.h> |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 51 | #ifdef CONFIG_DCB |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 52 | #include <net/dcbnl.h> |
| 53 | #endif |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 54 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | struct vlan_group; |
Jeff Moyer | 115c1d6 | 2005-06-22 22:05:31 -0700 | [diff] [blame] | 56 | struct netpoll_info; |
Richard Cochran | c1f19b5 | 2010-07-17 08:49:36 +0000 | [diff] [blame] | 57 | struct phy_device; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 58 | /* 802.11 specific */ |
| 59 | struct wireless_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | /* source back-compat hooks */ |
| 61 | #define SET_ETHTOOL_OPS(netdev,ops) \ |
| 62 | ( (netdev)->ethtool_ops = (ops) ) |
| 63 | |
| 64 | #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev |
| 65 | functions are available. */ |
| 66 | #define HAVE_FREE_NETDEV /* free_netdev() */ |
| 67 | #define HAVE_NETDEV_PRIV /* netdev_priv() */ |
| 68 | |
Stefan Assmann | c1f7942 | 2010-07-22 02:50:21 +0000 | [diff] [blame] | 69 | /* hardware address assignment types */ |
| 70 | #define NET_ADDR_PERM 0 /* address is permanent (default) */ |
| 71 | #define NET_ADDR_RANDOM 1 /* address is generated randomly */ |
| 72 | #define NET_ADDR_STOLEN 2 /* address is stolen from other device */ |
| 73 | |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 74 | /* Backlog congestion levels */ |
| 75 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ |
| 76 | #define NET_RX_DROP 1 /* packet dropped */ |
| 77 | |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 78 | /* |
| 79 | * Transmit return codes: transmit return codes originate from three different |
| 80 | * namespaces: |
| 81 | * |
| 82 | * - qdisc return codes |
| 83 | * - driver transmit return codes |
| 84 | * - errno values |
| 85 | * |
| 86 | * Drivers are allowed to return any one of those in their hard_start_xmit() |
| 87 | * function. Real network devices commonly used with qdiscs should only return |
| 88 | * the driver transmit return codes though - when qdiscs are used, the actual |
| 89 | * transmission happens asynchronously, so the value is not propagated to |
| 90 | * higher layers. Virtual network devices transmit synchronously, in this case |
| 91 | * the driver transmit return codes are consumed by dev_queue_xmit(), all |
| 92 | * others are propagated to higher layers. |
| 93 | */ |
| 94 | |
| 95 | /* qdisc ->enqueue() return codes. */ |
| 96 | #define NET_XMIT_SUCCESS 0x00 |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 97 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
| 98 | #define NET_XMIT_CN 0x02 /* congestion notification */ |
| 99 | #define NET_XMIT_POLICED 0x03 /* skb is shot by police */ |
| 100 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | |
Gerrit Renker | b9df3cb | 2006-11-14 11:21:36 -0200 | [diff] [blame] | 102 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
| 103 | * indicates that the device will soon be dropping packets, or already drops |
| 104 | * some packets of the same priority; prompting us to send less aggressively. */ |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 105 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
| 107 | |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 108 | /* Driver transmit return codes */ |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 109 | #define NETDEV_TX_MASK 0xf0 |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 110 | |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 111 | enum netdev_tx { |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 112 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 113 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
| 114 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ |
| 115 | NETDEV_TX_LOCKED = 0x20, /* driver tx lock was already taken */ |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 116 | }; |
| 117 | typedef enum netdev_tx netdev_tx_t; |
| 118 | |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 119 | /* |
| 120 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; |
| 121 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. |
| 122 | */ |
| 123 | static inline bool dev_xmit_complete(int rc) |
| 124 | { |
| 125 | /* |
| 126 | * Positive cases with an skb consumed by a driver: |
| 127 | * - successful transmission (rc == NETDEV_TX_OK) |
| 128 | * - error while transmitting (rc < 0) |
| 129 | * - error while queueing to a different device (rc & NET_XMIT_MASK) |
| 130 | */ |
| 131 | if (likely(rc < NET_XMIT_MASK)) |
| 132 | return true; |
| 133 | |
| 134 | return false; |
| 135 | } |
| 136 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | #endif |
| 138 | |
| 139 | #define MAX_ADDR_LEN 32 /* Largest hardware address length */ |
| 140 | |
Adrian Bunk | c88e6f5 | 2008-06-27 19:54:54 -0700 | [diff] [blame] | 141 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | /* |
| 143 | * Compute the worst case header length according to the protocols |
| 144 | * used. |
| 145 | */ |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 146 | |
John W. Linville | caf66e5 | 2010-02-25 12:02:45 -0500 | [diff] [blame] | 147 | #if defined(CONFIG_WLAN) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) |
David S. Miller | 8388e3d | 2008-05-12 20:17:33 -0700 | [diff] [blame] | 148 | # if defined(CONFIG_MAC80211_MESH) |
| 149 | # define LL_MAX_HEADER 128 |
| 150 | # else |
| 151 | # define LL_MAX_HEADER 96 |
| 152 | # endif |
Adrian Bunk | c759a6b | 2009-04-27 02:36:20 -0700 | [diff] [blame] | 153 | #elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE) |
David S. Miller | 8388e3d | 2008-05-12 20:17:33 -0700 | [diff] [blame] | 154 | # define LL_MAX_HEADER 48 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | #else |
David S. Miller | 8388e3d | 2008-05-12 20:17:33 -0700 | [diff] [blame] | 156 | # define LL_MAX_HEADER 32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | #endif |
| 158 | |
David S. Miller | e81c7359 | 2006-11-28 20:53:39 -0800 | [diff] [blame] | 159 | #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \ |
| 160 | !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ |
| 161 | !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ |
| 162 | !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | #define MAX_HEADER LL_MAX_HEADER |
| 164 | #else |
| 165 | #define MAX_HEADER (LL_MAX_HEADER + 48) |
| 166 | #endif |
| 167 | |
| 168 | /* |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 169 | * Old network device statistics. Fields are native words |
| 170 | * (unsigned long) so they can be read and written atomically. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | */ |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 172 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 173 | struct net_device_stats { |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 174 | unsigned long rx_packets; |
| 175 | unsigned long tx_packets; |
| 176 | unsigned long rx_bytes; |
| 177 | unsigned long tx_bytes; |
| 178 | unsigned long rx_errors; |
| 179 | unsigned long tx_errors; |
| 180 | unsigned long rx_dropped; |
| 181 | unsigned long tx_dropped; |
| 182 | unsigned long multicast; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | unsigned long collisions; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | unsigned long rx_length_errors; |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 185 | unsigned long rx_over_errors; |
| 186 | unsigned long rx_crc_errors; |
| 187 | unsigned long rx_frame_errors; |
| 188 | unsigned long rx_fifo_errors; |
| 189 | unsigned long rx_missed_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | unsigned long tx_aborted_errors; |
| 191 | unsigned long tx_carrier_errors; |
| 192 | unsigned long tx_fifo_errors; |
| 193 | unsigned long tx_heartbeat_errors; |
| 194 | unsigned long tx_window_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | unsigned long rx_compressed; |
| 196 | unsigned long tx_compressed; |
| 197 | }; |
| 198 | |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 199 | #endif /* __KERNEL__ */ |
| 200 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | |
| 202 | /* Media selection options. */ |
| 203 | enum { |
| 204 | IF_PORT_UNKNOWN = 0, |
| 205 | IF_PORT_10BASE2, |
| 206 | IF_PORT_10BASET, |
| 207 | IF_PORT_AUI, |
| 208 | IF_PORT_100BASET, |
| 209 | IF_PORT_100BASETX, |
| 210 | IF_PORT_100BASEFX |
| 211 | }; |
| 212 | |
| 213 | #ifdef __KERNEL__ |
| 214 | |
| 215 | #include <linux/cache.h> |
| 216 | #include <linux/skbuff.h> |
| 217 | |
| 218 | struct neighbour; |
| 219 | struct neigh_parms; |
| 220 | struct sk_buff; |
| 221 | |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 222 | struct netdev_hw_addr { |
| 223 | struct list_head list; |
| 224 | unsigned char addr[MAX_ADDR_LEN]; |
| 225 | unsigned char type; |
Jiri Pirko | ccffad25 | 2009-05-22 23:22:17 +0000 | [diff] [blame] | 226 | #define NETDEV_HW_ADDR_T_LAN 1 |
| 227 | #define NETDEV_HW_ADDR_T_SAN 2 |
| 228 | #define NETDEV_HW_ADDR_T_SLAVE 3 |
| 229 | #define NETDEV_HW_ADDR_T_UNICAST 4 |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 230 | #define NETDEV_HW_ADDR_T_MULTICAST 5 |
Jiri Pirko | ccffad25 | 2009-05-22 23:22:17 +0000 | [diff] [blame] | 231 | bool synced; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 232 | bool global_use; |
Eric Dumazet | 8f8f103 | 2010-09-19 11:24:02 -0700 | [diff] [blame] | 233 | int refcount; |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 234 | struct rcu_head rcu_head; |
| 235 | }; |
| 236 | |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 237 | struct netdev_hw_addr_list { |
| 238 | struct list_head list; |
| 239 | int count; |
| 240 | }; |
| 241 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 242 | #define netdev_hw_addr_list_count(l) ((l)->count) |
| 243 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) |
| 244 | #define netdev_hw_addr_list_for_each(ha, l) \ |
| 245 | list_for_each_entry(ha, &(l)->list, list) |
| 246 | |
| 247 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
| 248 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) |
Jiri Pirko | 32e7bfc | 2010-01-25 13:36:10 -0800 | [diff] [blame] | 249 | #define netdev_for_each_uc_addr(ha, dev) \ |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 250 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) |
Jiri Pirko | 32e7bfc | 2010-01-25 13:36:10 -0800 | [diff] [blame] | 251 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 252 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
| 253 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) |
Pavel Roskin | 18e225f | 2010-04-07 16:40:09 -0700 | [diff] [blame] | 254 | #define netdev_for_each_mc_addr(ha, dev) \ |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 255 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
Jiri Pirko | 6683ece | 2010-02-04 10:22:25 -0800 | [diff] [blame] | 256 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 257 | struct hh_cache { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | struct hh_cache *hh_next; /* Next entry */ |
| 259 | atomic_t hh_refcnt; /* number of users */ |
Eric Dumazet | f049098 | 2006-12-08 00:08:43 -0800 | [diff] [blame] | 260 | /* |
| 261 | * We want hh_output, hh_len, hh_lock and hh_data be a in a separate |
| 262 | * cache line on SMP. |
| 263 | * They are mostly read, but hh_refcnt may be changed quite frequently, |
| 264 | * incurring cache line ping pongs. |
| 265 | */ |
| 266 | __be16 hh_type ____cacheline_aligned_in_smp; |
| 267 | /* protocol identifier, f.e ETH_P_IP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | * NOTE: For VLANs, this will be the |
| 269 | * encapuslated type. --BLG |
| 270 | */ |
Arnaldo Carvalho de Melo | d5c42c0 | 2006-11-27 17:58:02 -0200 | [diff] [blame] | 271 | u16 hh_len; /* length of header */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | int (*hh_output)(struct sk_buff *skb); |
Stephen Hemminger | 3644f0c | 2006-12-07 15:08:17 -0800 | [diff] [blame] | 273 | seqlock_t hh_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | |
| 275 | /* cached hardware header; allow for machine alignment needs. */ |
| 276 | #define HH_DATA_MOD 16 |
| 277 | #define HH_DATA_OFF(__len) \ |
Jiri Benc | 5ba0eac | 2005-06-02 16:48:05 -0700 | [diff] [blame] | 278 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | #define HH_DATA_ALIGN(__len) \ |
| 280 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) |
| 281 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; |
| 282 | }; |
| 283 | |
Eric Dumazet | 34d101d | 2010-10-11 09:16:57 -0700 | [diff] [blame] | 284 | static inline void hh_cache_put(struct hh_cache *hh) |
| 285 | { |
| 286 | if (atomic_dec_and_test(&hh->hh_refcnt)) |
| 287 | kfree(hh); |
| 288 | } |
| 289 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. |
| 291 | * Alternative is: |
| 292 | * dev->hard_header_len ? (dev->hard_header_len + |
| 293 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 |
| 294 | * |
| 295 | * We could use other alignment values, but we must maintain the |
| 296 | * relationship HH alignment <= LL alignment. |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 297 | * |
| 298 | * LL_ALLOCATED_SPACE also takes into account the tailroom the device |
| 299 | * may need. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | */ |
| 301 | #define LL_RESERVED_SPACE(dev) \ |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 302 | ((((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] | 303 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 304 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
| 305 | #define LL_ALLOCATED_SPACE(dev) \ |
| 306 | ((((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] | 307 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 308 | struct header_ops { |
| 309 | int (*create) (struct sk_buff *skb, struct net_device *dev, |
| 310 | unsigned short type, const void *daddr, |
| 311 | const void *saddr, unsigned len); |
| 312 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); |
| 313 | int (*rebuild)(struct sk_buff *skb); |
| 314 | #define HAVE_HEADER_CACHE |
| 315 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh); |
| 316 | void (*cache_update)(struct hh_cache *hh, |
| 317 | const struct net_device *dev, |
| 318 | const unsigned char *haddr); |
| 319 | }; |
| 320 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | /* These flag bits are private to the generic network queueing |
| 322 | * layer, they may not be explicitly referenced by any other |
| 323 | * code. |
| 324 | */ |
| 325 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 326 | enum netdev_state_t { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | __LINK_STATE_START, |
| 328 | __LINK_STATE_PRESENT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | __LINK_STATE_NOCARRIER, |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 330 | __LINK_STATE_LINKWATCH_PENDING, |
| 331 | __LINK_STATE_DORMANT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | }; |
| 333 | |
| 334 | |
| 335 | /* |
| 336 | * This structure holds at boot time configured netdevice settings. They |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 337 | * are then used in the device probing. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | */ |
| 339 | struct netdev_boot_setup { |
| 340 | char name[IFNAMSIZ]; |
| 341 | struct ifmap map; |
| 342 | }; |
| 343 | #define NETDEV_BOOT_SETUP_MAX 8 |
| 344 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 345 | extern int __init netdev_boot_setup(char *str); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | |
| 347 | /* |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 348 | * Structure for NAPI scheduling similar to tasklet but with weighting |
| 349 | */ |
| 350 | struct napi_struct { |
| 351 | /* The poll_list must only be managed by the entity which |
| 352 | * changes the state of the NAPI_STATE_SCHED bit. This means |
| 353 | * whoever atomically sets that bit can add this napi_struct |
| 354 | * to the per-cpu poll_list, and whoever clears that bit |
| 355 | * can remove from the list right before clearing the bit. |
| 356 | */ |
| 357 | struct list_head poll_list; |
| 358 | |
| 359 | unsigned long state; |
| 360 | int weight; |
| 361 | int (*poll)(struct napi_struct *, int); |
| 362 | #ifdef CONFIG_NETPOLL |
| 363 | spinlock_t poll_lock; |
| 364 | int poll_owner; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 365 | #endif |
Herbert Xu | 4ae5544 | 2009-02-08 18:00:36 +0000 | [diff] [blame] | 366 | |
| 367 | unsigned int gro_count; |
| 368 | |
Herbert Xu | 5d38a07 | 2009-01-04 16:13:40 -0800 | [diff] [blame] | 369 | struct net_device *dev; |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 370 | struct list_head dev_list; |
| 371 | struct sk_buff *gro_list; |
Herbert Xu | 5d38a07 | 2009-01-04 16:13:40 -0800 | [diff] [blame] | 372 | struct sk_buff *skb; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 373 | }; |
| 374 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 375 | enum { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 376 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 377 | NAPI_STATE_DISABLE, /* Disable pending */ |
Neil Horman | 7b363e4 | 2008-12-09 23:22:26 -0800 | [diff] [blame] | 378 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 379 | }; |
| 380 | |
Ben Hutchings | 5b252f0 | 2009-10-29 07:17:09 +0000 | [diff] [blame] | 381 | enum gro_result { |
Herbert Xu | d1c76af | 2009-03-16 10:50:02 -0700 | [diff] [blame] | 382 | GRO_MERGED, |
| 383 | GRO_MERGED_FREE, |
| 384 | GRO_HELD, |
| 385 | GRO_NORMAL, |
| 386 | GRO_DROP, |
| 387 | }; |
Ben Hutchings | 5b252f0 | 2009-10-29 07:17:09 +0000 | [diff] [blame] | 388 | typedef enum gro_result gro_result_t; |
Herbert Xu | d1c76af | 2009-03-16 10:50:02 -0700 | [diff] [blame] | 389 | |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 390 | typedef struct sk_buff *rx_handler_func_t(struct sk_buff *skb); |
| 391 | |
Harvey Harrison | b3c9752 | 2008-02-13 15:03:15 -0800 | [diff] [blame] | 392 | extern void __napi_schedule(struct napi_struct *n); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 393 | |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 394 | static inline int napi_disable_pending(struct napi_struct *n) |
| 395 | { |
| 396 | return test_bit(NAPI_STATE_DISABLE, &n->state); |
| 397 | } |
| 398 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 399 | /** |
| 400 | * napi_schedule_prep - check if napi can be scheduled |
| 401 | * @n: napi context |
| 402 | * |
| 403 | * Test if NAPI routine is already running, and if not mark |
| 404 | * it as running. This is used as a condition variable |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 405 | * insure only one NAPI poll instance runs. We also make |
| 406 | * sure there is no pending NAPI disable. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 407 | */ |
| 408 | static inline int napi_schedule_prep(struct napi_struct *n) |
| 409 | { |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 410 | return !napi_disable_pending(n) && |
| 411 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | /** |
| 415 | * napi_schedule - schedule NAPI poll |
| 416 | * @n: napi context |
| 417 | * |
| 418 | * Schedule NAPI poll routine to be called if it is not already |
| 419 | * running. |
| 420 | */ |
| 421 | static inline void napi_schedule(struct napi_struct *n) |
| 422 | { |
| 423 | if (napi_schedule_prep(n)) |
| 424 | __napi_schedule(n); |
| 425 | } |
| 426 | |
Roland Dreier | bfe13f5 | 2007-10-09 15:47:37 -0700 | [diff] [blame] | 427 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
| 428 | static inline int napi_reschedule(struct napi_struct *napi) |
| 429 | { |
| 430 | if (napi_schedule_prep(napi)) { |
| 431 | __napi_schedule(napi); |
| 432 | return 1; |
| 433 | } |
| 434 | return 0; |
| 435 | } |
| 436 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 437 | /** |
| 438 | * napi_complete - NAPI processing complete |
| 439 | * @n: napi context |
| 440 | * |
| 441 | * Mark NAPI processing as complete. |
| 442 | */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 443 | extern void __napi_complete(struct napi_struct *n); |
| 444 | extern void napi_complete(struct napi_struct *n); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 445 | |
| 446 | /** |
| 447 | * napi_disable - prevent NAPI from scheduling |
| 448 | * @n: napi context |
| 449 | * |
| 450 | * Stop NAPI from being scheduled on this context. |
| 451 | * Waits till any outstanding processing completes. |
| 452 | */ |
| 453 | static inline void napi_disable(struct napi_struct *n) |
| 454 | { |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 455 | set_bit(NAPI_STATE_DISABLE, &n->state); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 456 | while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) |
Benjamin Herrenschmidt | 43cc738 | 2007-10-26 04:23:22 -0700 | [diff] [blame] | 457 | msleep(1); |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 458 | clear_bit(NAPI_STATE_DISABLE, &n->state); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 459 | } |
| 460 | |
| 461 | /** |
| 462 | * napi_enable - enable NAPI scheduling |
| 463 | * @n: napi context |
| 464 | * |
| 465 | * Resume NAPI from being scheduled on this context. |
| 466 | * Must be paired with napi_disable. |
| 467 | */ |
| 468 | static inline void napi_enable(struct napi_struct *n) |
| 469 | { |
| 470 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); |
| 471 | smp_mb__before_clear_bit(); |
| 472 | clear_bit(NAPI_STATE_SCHED, &n->state); |
| 473 | } |
| 474 | |
Stephen Hemminger | c264c3d | 2007-10-17 13:26:41 -0700 | [diff] [blame] | 475 | #ifdef CONFIG_SMP |
| 476 | /** |
| 477 | * napi_synchronize - wait until NAPI is not running |
| 478 | * @n: napi context |
| 479 | * |
| 480 | * Wait until NAPI is done being scheduled on this context. |
| 481 | * Waits till any outstanding processing completes but |
| 482 | * does not disable future activations. |
| 483 | */ |
| 484 | static inline void napi_synchronize(const struct napi_struct *n) |
| 485 | { |
| 486 | while (test_bit(NAPI_STATE_SCHED, &n->state)) |
| 487 | msleep(1); |
| 488 | } |
| 489 | #else |
| 490 | # define napi_synchronize(n) barrier() |
| 491 | #endif |
| 492 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 493 | enum netdev_queue_state_t { |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 494 | __QUEUE_STATE_XOFF, |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 495 | __QUEUE_STATE_FROZEN, |
Eric Dumazet | 5a0d226 | 2010-11-23 10:42:02 +0000 | [diff] [blame] | 496 | #define QUEUE_STATE_XOFF_OR_FROZEN ((1 << __QUEUE_STATE_XOFF) | \ |
| 497 | (1 << __QUEUE_STATE_FROZEN)) |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 498 | }; |
| 499 | |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 500 | struct netdev_queue { |
Eric Dumazet | 6a321cb | 2009-04-28 04:43:42 -0700 | [diff] [blame] | 501 | /* |
| 502 | * read mostly part |
| 503 | */ |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 504 | struct net_device *dev; |
David S. Miller | b0e1e64 | 2008-07-08 17:42:10 -0700 | [diff] [blame] | 505 | struct Qdisc *qdisc; |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 506 | unsigned long state; |
David S. Miller | b0e1e64 | 2008-07-08 17:42:10 -0700 | [diff] [blame] | 507 | struct Qdisc *qdisc_sleeping; |
Tom Herbert | 1d24eb4 | 2010-11-21 13:17:27 +0000 | [diff] [blame] | 508 | #ifdef CONFIG_RPS |
| 509 | struct kobject kobj; |
| 510 | #endif |
| 511 | |
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 | bd27290 | 2010-07-19 09:35:40 -0700 | [diff] [blame] | 521 | u64 tx_bytes; |
| 522 | u64 tx_packets; |
| 523 | u64 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 | |
Eric Dumazet | df33454 | 2010-03-24 19:13:54 +0000 | [diff] [blame] | 526 | #ifdef CONFIG_RPS |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 527 | /* |
| 528 | * This structure holds an RPS map which can be of variable length. The |
| 529 | * map is an array of CPUs. |
| 530 | */ |
| 531 | struct rps_map { |
| 532 | unsigned int len; |
| 533 | struct rcu_head rcu; |
| 534 | u16 cpus[0]; |
| 535 | }; |
| 536 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16))) |
| 537 | |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 538 | /* |
| 539 | * The rps_dev_flow structure contains the mapping of a flow to a CPU and the |
| 540 | * tail pointer for that CPU's input queue at the time of last enqueue. |
| 541 | */ |
| 542 | struct rps_dev_flow { |
| 543 | u16 cpu; |
| 544 | u16 fill; |
| 545 | unsigned int last_qtail; |
| 546 | }; |
| 547 | |
| 548 | /* |
| 549 | * The rps_dev_flow_table structure contains a table of flow mappings. |
| 550 | */ |
| 551 | struct rps_dev_flow_table { |
| 552 | unsigned int mask; |
| 553 | struct rcu_head rcu; |
| 554 | struct work_struct free_work; |
| 555 | struct rps_dev_flow flows[0]; |
| 556 | }; |
| 557 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ |
| 558 | (_num * sizeof(struct rps_dev_flow))) |
| 559 | |
| 560 | /* |
| 561 | * The rps_sock_flow_table contains mappings of flows to the last CPU |
| 562 | * on which they were processed by the application (set in recvmsg). |
| 563 | */ |
| 564 | struct rps_sock_flow_table { |
| 565 | unsigned int mask; |
| 566 | u16 ents[0]; |
| 567 | }; |
| 568 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_sock_flow_table) + \ |
| 569 | (_num * sizeof(u16))) |
| 570 | |
| 571 | #define RPS_NO_CPU 0xffff |
| 572 | |
| 573 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, |
| 574 | u32 hash) |
| 575 | { |
| 576 | if (table && hash) { |
| 577 | unsigned int cpu, index = hash & table->mask; |
| 578 | |
| 579 | /* We only give a hint, preemption can change cpu under us */ |
| 580 | cpu = raw_smp_processor_id(); |
| 581 | |
| 582 | if (table->ents[index] != cpu) |
| 583 | table->ents[index] = cpu; |
| 584 | } |
| 585 | } |
| 586 | |
| 587 | static inline void rps_reset_sock_flow(struct rps_sock_flow_table *table, |
| 588 | u32 hash) |
| 589 | { |
| 590 | if (table && hash) |
| 591 | table->ents[hash & table->mask] = RPS_NO_CPU; |
| 592 | } |
| 593 | |
Eric Dumazet | 6e3f7fa | 2010-10-25 03:02:02 +0000 | [diff] [blame] | 594 | extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 595 | |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 596 | /* This structure contains an instance of an RX queue. */ |
| 597 | struct netdev_rx_queue { |
Eric Dumazet | 6e3f7fa | 2010-10-25 03:02:02 +0000 | [diff] [blame] | 598 | struct rps_map __rcu *rps_map; |
| 599 | struct rps_dev_flow_table __rcu *rps_flow_table; |
| 600 | struct kobject kobj; |
Tom Herbert | fe82224 | 2010-11-09 10:47:38 +0000 | [diff] [blame] | 601 | struct net_device *dev; |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 602 | } ____cacheline_aligned_in_smp; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 603 | #endif /* CONFIG_RPS */ |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 604 | |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 605 | #ifdef CONFIG_XPS |
| 606 | /* |
| 607 | * This structure holds an XPS map which can be of variable length. The |
| 608 | * map is an array of queues. |
| 609 | */ |
| 610 | struct xps_map { |
| 611 | unsigned int len; |
| 612 | unsigned int alloc_len; |
| 613 | struct rcu_head rcu; |
| 614 | u16 queues[0]; |
| 615 | }; |
| 616 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + (_num * sizeof(u16))) |
| 617 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_BYTES - sizeof(struct xps_map)) \ |
| 618 | / sizeof(u16)) |
| 619 | |
| 620 | /* |
| 621 | * This structure holds all XPS maps for device. Maps are indexed by CPU. |
| 622 | */ |
| 623 | struct xps_dev_maps { |
| 624 | struct rcu_head rcu; |
Eric Dumazet | a417786 | 2010-11-28 21:43:02 +0000 | [diff] [blame^] | 625 | struct xps_map __rcu *cpu_map[0]; |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 626 | }; |
| 627 | #define XPS_DEV_MAPS_SIZE (sizeof(struct xps_dev_maps) + \ |
| 628 | (nr_cpu_ids * sizeof(struct xps_map *))) |
| 629 | #endif /* CONFIG_XPS */ |
| 630 | |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 631 | /* |
| 632 | * This structure defines the management hooks for network devices. |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 633 | * The following hooks can be defined; unless noted otherwise, they are |
| 634 | * optional and can be filled with a null pointer. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 635 | * |
| 636 | * int (*ndo_init)(struct net_device *dev); |
| 637 | * This function is called once when network device is registered. |
| 638 | * The network device can use this to any late stage initializaton |
| 639 | * or semantic validattion. It can fail with an error code which will |
| 640 | * be propogated back to register_netdev |
| 641 | * |
| 642 | * void (*ndo_uninit)(struct net_device *dev); |
| 643 | * This function is called when device is unregistered or when registration |
| 644 | * fails. It is not called if init fails. |
| 645 | * |
| 646 | * int (*ndo_open)(struct net_device *dev); |
| 647 | * This function is called when network device transistions to the up |
| 648 | * state. |
| 649 | * |
| 650 | * int (*ndo_stop)(struct net_device *dev); |
| 651 | * This function is called when network device transistions to the down |
| 652 | * state. |
| 653 | * |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 654 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
| 655 | * struct net_device *dev); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 656 | * Called when a packet needs to be transmitted. |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 657 | * Must return NETDEV_TX_OK , NETDEV_TX_BUSY. |
| 658 | * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX) |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 659 | * Required can not be NULL. |
| 660 | * |
| 661 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb); |
| 662 | * Called to decide which queue to when device supports multiple |
| 663 | * transmit queues. |
| 664 | * |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 665 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
| 666 | * This function is called to allow device receiver to make |
| 667 | * changes to configuration when multicast or promiscious is enabled. |
| 668 | * |
| 669 | * void (*ndo_set_rx_mode)(struct net_device *dev); |
| 670 | * This function is called device changes address list filtering. |
| 671 | * |
| 672 | * void (*ndo_set_multicast_list)(struct net_device *dev); |
| 673 | * This function is called when the multicast address list changes. |
| 674 | * |
| 675 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); |
| 676 | * This function is called when the Media Access Control address |
Mike Rapoport | 37b607c | 2009-04-27 05:45:54 -0700 | [diff] [blame] | 677 | * needs to be changed. If this interface is not defined, the |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 678 | * mac address can not be changed. |
| 679 | * |
| 680 | * int (*ndo_validate_addr)(struct net_device *dev); |
| 681 | * Test if Media Access Control address is valid for the device. |
| 682 | * |
| 683 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); |
| 684 | * Called when a user request an ioctl which can't be handled by |
| 685 | * the generic interface code. If not defined ioctl's return |
| 686 | * not supported error code. |
| 687 | * |
| 688 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); |
| 689 | * Used to set network devices bus interface parameters. This interface |
| 690 | * is retained for legacy reason, new devices should use the bus |
| 691 | * interface (PCI) for low level management. |
| 692 | * |
| 693 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); |
| 694 | * Called when a user wants to change the Maximum Transfer Unit |
| 695 | * of a device. If not defined, any request to change MTU will |
| 696 | * will return an error. |
| 697 | * |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 698 | * void (*ndo_tx_timeout)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 699 | * Callback uses when the transmitter has not made any progress |
| 700 | * for dev->watchdog ticks. |
| 701 | * |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 702 | * struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 703 | * struct rtnl_link_stats64 *storage); |
Wolfram Sang | d308e38 | 2009-10-07 13:53:11 -0700 | [diff] [blame] | 704 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 705 | * Called when a user wants to get the network device usage |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 706 | * statistics. Drivers must do one of the following: |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 707 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
| 708 | * rtnl_link_stats64 structure passed by the caller. |
Ben Hutchings | 82695d9 | 2010-06-15 15:08:48 -0700 | [diff] [blame] | 709 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 710 | * (which should normally be dev->stats) and return a pointer to |
| 711 | * it. The structure may be changed asynchronously only if each |
| 712 | * field is written atomically. |
| 713 | * 3. Update dev->stats asynchronously and atomically, and define |
| 714 | * neither operation. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 715 | * |
| 716 | * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp); |
| 717 | * If device support VLAN receive accleration |
| 718 | * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called |
| 719 | * when vlan groups for the device changes. Note: grp is NULL |
| 720 | * if no vlan's groups are being used. |
| 721 | * |
| 722 | * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid); |
| 723 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) |
| 724 | * this function is called when a VLAN id is registered. |
| 725 | * |
| 726 | * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid); |
| 727 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) |
| 728 | * this function is called when a VLAN id is unregistered. |
| 729 | * |
| 730 | * void (*ndo_poll_controller)(struct net_device *dev); |
Williams, Mitch A | 95c26df | 2010-02-10 01:43:46 +0000 | [diff] [blame] | 731 | * |
| 732 | * SR-IOV management functions. |
| 733 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); |
| 734 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos); |
| 735 | * int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate); |
| 736 | * int (*ndo_get_vf_config)(struct net_device *dev, |
| 737 | * int vf, struct ifla_vf_info *ivf); |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 738 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
| 739 | * struct nlattr *port[]); |
| 740 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 741 | */ |
Stephen Hemminger | 47fd5b8 | 2008-11-25 00:20:43 -0800 | [diff] [blame] | 742 | #define HAVE_NET_DEVICE_OPS |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 743 | struct net_device_ops { |
| 744 | int (*ndo_init)(struct net_device *dev); |
| 745 | void (*ndo_uninit)(struct net_device *dev); |
| 746 | int (*ndo_open)(struct net_device *dev); |
| 747 | int (*ndo_stop)(struct net_device *dev); |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 748 | netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 749 | struct net_device *dev); |
| 750 | u16 (*ndo_select_queue)(struct net_device *dev, |
| 751 | struct sk_buff *skb); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 752 | void (*ndo_change_rx_flags)(struct net_device *dev, |
| 753 | int flags); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 754 | void (*ndo_set_rx_mode)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 755 | void (*ndo_set_multicast_list)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 756 | int (*ndo_set_mac_address)(struct net_device *dev, |
| 757 | void *addr); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 758 | int (*ndo_validate_addr)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 759 | int (*ndo_do_ioctl)(struct net_device *dev, |
| 760 | struct ifreq *ifr, int cmd); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 761 | int (*ndo_set_config)(struct net_device *dev, |
| 762 | struct ifmap *map); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 763 | int (*ndo_change_mtu)(struct net_device *dev, |
| 764 | int new_mtu); |
| 765 | int (*ndo_neigh_setup)(struct net_device *dev, |
| 766 | struct neigh_parms *); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 767 | void (*ndo_tx_timeout) (struct net_device *dev); |
| 768 | |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 769 | struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
| 770 | struct rtnl_link_stats64 *storage); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 771 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
| 772 | |
| 773 | void (*ndo_vlan_rx_register)(struct net_device *dev, |
| 774 | struct vlan_group *grp); |
| 775 | void (*ndo_vlan_rx_add_vid)(struct net_device *dev, |
| 776 | unsigned short vid); |
| 777 | void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, |
| 778 | unsigned short vid); |
| 779 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 780 | void (*ndo_poll_controller)(struct net_device *dev); |
Herbert Xu | 4247e16 | 2010-06-10 16:12:47 +0000 | [diff] [blame] | 781 | int (*ndo_netpoll_setup)(struct net_device *dev, |
| 782 | struct netpoll_info *info); |
WANG Cong | 0e34e93 | 2010-05-06 00:47:21 -0700 | [diff] [blame] | 783 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 784 | #endif |
Williams, Mitch A | 95c26df | 2010-02-10 01:43:46 +0000 | [diff] [blame] | 785 | int (*ndo_set_vf_mac)(struct net_device *dev, |
| 786 | int queue, u8 *mac); |
| 787 | int (*ndo_set_vf_vlan)(struct net_device *dev, |
| 788 | int queue, u16 vlan, u8 qos); |
| 789 | int (*ndo_set_vf_tx_rate)(struct net_device *dev, |
| 790 | int vf, int rate); |
| 791 | int (*ndo_get_vf_config)(struct net_device *dev, |
| 792 | int vf, |
| 793 | struct ifla_vf_info *ivf); |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 794 | int (*ndo_set_vf_port)(struct net_device *dev, |
| 795 | int vf, |
| 796 | struct nlattr *port[]); |
| 797 | int (*ndo_get_vf_port)(struct net_device *dev, |
| 798 | int vf, struct sk_buff *skb); |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 799 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
Yi Zou | cb45439 | 2009-08-31 12:31:36 +0000 | [diff] [blame] | 800 | int (*ndo_fcoe_enable)(struct net_device *dev); |
| 801 | int (*ndo_fcoe_disable)(struct net_device *dev); |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 802 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
| 803 | u16 xid, |
| 804 | struct scatterlist *sgl, |
| 805 | unsigned int sgc); |
| 806 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, |
| 807 | u16 xid); |
Yi Zou | df5c794 | 2009-10-28 18:24:35 +0000 | [diff] [blame] | 808 | #define NETDEV_FCOE_WWNN 0 |
| 809 | #define NETDEV_FCOE_WWPN 1 |
| 810 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, |
| 811 | u64 *wwn, int type); |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 812 | #endif |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 813 | }; |
| 814 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 815 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | * The DEVICE structure. |
| 817 | * Actually, this whole structure is a big mistake. It mixes I/O |
| 818 | * data with strictly "high-level" data, and it has to know about |
| 819 | * almost every data structure used in the INET module. |
| 820 | * |
| 821 | * FIXME: cleanup struct net_device such that network protocol info |
| 822 | * moves out. |
| 823 | */ |
| 824 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 825 | struct net_device { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | |
| 827 | /* |
| 828 | * This is the first field of the "visible" part of this structure |
| 829 | * (i.e. as seen by users in the "Space.c" file). It is the name |
Justin P. Mattock | 724df61 | 2010-05-26 09:22:40 -0700 | [diff] [blame] | 830 | * of the interface. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | */ |
| 832 | char name[IFNAMSIZ]; |
Mark Gross | ed77134 | 2010-05-06 01:59:26 +0200 | [diff] [blame] | 833 | |
James Bottomley | 82f6825 | 2010-07-05 22:53:06 +0200 | [diff] [blame] | 834 | struct pm_qos_request_list pm_qos_req; |
Mark Gross | ed77134 | 2010-05-06 01:59:26 +0200 | [diff] [blame] | 835 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 836 | /* device name hash chain */ |
| 837 | struct hlist_node name_hlist; |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 838 | /* snmp alias */ |
| 839 | char *ifalias; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | |
| 841 | /* |
| 842 | * I/O specific fields |
| 843 | * FIXME: Merge these and struct ifmap into one |
| 844 | */ |
| 845 | unsigned long mem_end; /* shared mem end */ |
| 846 | unsigned long mem_start; /* shared mem start */ |
| 847 | unsigned long base_addr; /* device I/O address */ |
| 848 | unsigned int irq; /* device IRQ number */ |
| 849 | |
| 850 | /* |
| 851 | * Some hardware also needs these fields, but they are not |
| 852 | * part of the usual set specified in Space.c. |
| 853 | */ |
| 854 | |
| 855 | unsigned char if_port; /* Selectable AUI, TP,..*/ |
| 856 | unsigned char dma; /* DMA channel */ |
| 857 | |
| 858 | unsigned long state; |
| 859 | |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 860 | struct list_head dev_list; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 861 | struct list_head napi_list; |
Eric Dumazet | 44a0873 | 2009-10-27 07:03:04 +0000 | [diff] [blame] | 862 | struct list_head unreg_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 864 | /* Net device features */ |
| 865 | unsigned long features; |
| 866 | #define NETIF_F_SG 1 /* Scatter/gather IO. */ |
Stephen Hemminger | d212f87 | 2007-06-27 00:47:37 -0700 | [diff] [blame] | 867 | #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 868 | #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ |
| 869 | #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ |
Stephen Hemminger | d212f87 | 2007-06-27 00:47:37 -0700 | [diff] [blame] | 870 | #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 871 | #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ |
| 872 | #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ |
| 873 | #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ |
| 874 | #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ |
| 875 | #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ |
| 876 | #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ |
Herbert Xu | 37c3185 | 2006-06-22 03:07:29 -0700 | [diff] [blame] | 877 | #define NETIF_F_GSO 2048 /* Enable software GSO. */ |
Christian Borntraeger | e24eb52 | 2007-09-25 19:42:02 -0700 | [diff] [blame] | 878 | #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ |
| 879 | /* do not use LLTX in new drivers */ |
Eric W. Biederman | ce286d3 | 2007-09-12 13:53:49 +0200 | [diff] [blame] | 880 | #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 881 | #define NETIF_F_GRO 16384 /* Generic receive offload */ |
Jeff Garzik | 3ae7c0b | 2007-08-15 16:00:51 -0700 | [diff] [blame] | 882 | #define NETIF_F_LRO 32768 /* large receive offload */ |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 883 | |
Jesse Brandeburg | 8dc92f7 | 2009-04-27 22:35:52 +0000 | [diff] [blame] | 884 | /* the GSO_MASK reserves bits 16 through 23 */ |
Chris Leech | 01d5b2f | 2009-02-27 14:06:49 -0800 | [diff] [blame] | 885 | #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */ |
Jesse Brandeburg | 8dc92f7 | 2009-04-27 22:35:52 +0000 | [diff] [blame] | 886 | #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */ |
Yi Zou | bb2af4f | 2009-08-14 12:41:57 +0000 | [diff] [blame] | 887 | #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/ |
Peter P Waskiewicz Jr | 15682bc | 2010-02-10 20:03:05 -0800 | [diff] [blame] | 888 | #define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */ |
stephen hemminger | b00fabb | 2010-03-29 14:47:27 +0000 | [diff] [blame] | 889 | #define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */ |
Chris Leech | 01d5b2f | 2009-02-27 14:06:49 -0800 | [diff] [blame] | 890 | |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 891 | /* Segmentation offload features */ |
Patrick McHardy | 289c79a | 2008-05-23 00:22:04 -0700 | [diff] [blame] | 892 | #define NETIF_F_GSO_SHIFT 16 |
Chris Leech | 43eb99c | 2009-02-27 14:06:43 -0800 | [diff] [blame] | 893 | #define NETIF_F_GSO_MASK 0x00ff0000 |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 894 | #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) |
Herbert Xu | f83ef8c | 2006-06-30 13:37:03 -0700 | [diff] [blame] | 895 | #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 896 | #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) |
Herbert Xu | f83ef8c | 2006-06-30 13:37:03 -0700 | [diff] [blame] | 897 | #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) |
| 898 | #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) |
Chris Leech | 01d5b2f | 2009-02-27 14:06:49 -0800 | [diff] [blame] | 899 | #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT) |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 900 | |
Herbert Xu | 78eb887 | 2006-08-17 18:22:32 -0700 | [diff] [blame] | 901 | /* List of features with software fallbacks. */ |
Herbert Xu | d29c0c5 | 2010-06-14 20:21:04 +0000 | [diff] [blame] | 902 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \ |
| 903 | NETIF_F_TSO6 | NETIF_F_UFO) |
Herbert Xu | 78eb887 | 2006-08-17 18:22:32 -0700 | [diff] [blame] | 904 | |
Stephen Hemminger | d212f87 | 2007-06-27 00:47:37 -0700 | [diff] [blame] | 905 | |
Herbert Xu | 8648b30 | 2006-06-17 22:06:05 -0700 | [diff] [blame] | 906 | #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] | 907 | #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) |
| 908 | #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) |
| 909 | #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] | 910 | |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 911 | /* |
| 912 | * If one device supports one of these features, then enable them |
| 913 | * for all in netdev_increment_features. |
| 914 | */ |
| 915 | #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] | 916 | NETIF_F_SG | NETIF_F_HIGHDMA | \ |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 917 | NETIF_F_FRAGLIST) |
| 918 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | /* Interface index. Unique device identifier */ |
| 920 | int ifindex; |
| 921 | int iflink; |
| 922 | |
Rusty Russell | c45d286 | 2007-03-28 14:29:08 -0700 | [diff] [blame] | 923 | struct net_device_stats stats; |
Eric Dumazet | caf586e | 2010-09-30 21:06:55 +0000 | [diff] [blame] | 924 | atomic_long_t rx_dropped; /* dropped packets by core network |
| 925 | * Do not use this in drivers. |
| 926 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | |
Johannes Berg | b86e028 | 2007-04-26 20:48:23 -0700 | [diff] [blame] | 928 | #ifdef CONFIG_WIRELESS_EXT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | /* List of functions to handle Wireless Extensions (instead of ioctl). |
| 930 | * See <net/iw_handler.h> for details. Jean II */ |
| 931 | const struct iw_handler_def * wireless_handlers; |
| 932 | /* Instance data managed by the core of Wireless Extensions. */ |
| 933 | struct iw_public_data * wireless_data; |
Johannes Berg | b86e028 | 2007-04-26 20:48:23 -0700 | [diff] [blame] | 934 | #endif |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 935 | /* Management operations */ |
| 936 | const struct net_device_ops *netdev_ops; |
Stephen Hemminger | 76fd859 | 2006-09-08 11:16:13 -0700 | [diff] [blame] | 937 | const struct ethtool_ops *ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 939 | /* Hardware header description */ |
| 940 | const struct header_ops *header_ops; |
| 941 | |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 942 | unsigned int flags; /* interface flags (a la BSD) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | unsigned short gflags; |
Simon Horman | 1726442 | 2010-08-23 16:26:41 +0000 | [diff] [blame] | 944 | unsigned int priv_flags; /* Like 'flags' but invisible to userspace. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | unsigned short padded; /* How much padding added by alloc_netdev() */ |
| 946 | |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 947 | unsigned char operstate; /* RFC2863 operstate */ |
| 948 | unsigned char link_mode; /* mapping policy to operstate */ |
| 949 | |
David S. Miller | cd7b539 | 2010-05-02 22:27:59 -0700 | [diff] [blame] | 950 | unsigned int mtu; /* interface MTU value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | unsigned short type; /* interface hardware type */ |
| 952 | unsigned short hard_header_len; /* hardware hdr length */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 954 | /* extra head- and tailroom the hardware may need, but not in all cases |
| 955 | * can this be guaranteed, especially tailroom. Some cases also use |
| 956 | * LL_MAX_HEADER instead to allocate the skb. |
| 957 | */ |
| 958 | unsigned short needed_headroom; |
| 959 | unsigned short needed_tailroom; |
| 960 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | /* Interface address info. */ |
Jon Wetzel | a6f9a70 | 2005-08-20 17:15:54 -0700 | [diff] [blame] | 962 | unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ |
Stefan Assmann | c1f7942 | 2010-07-22 02:50:21 +0000 | [diff] [blame] | 963 | unsigned char addr_assign_type; /* hw address assignment type */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | unsigned char addr_len; /* hardware address length */ |
| 965 | unsigned short dev_id; /* for shared network cards */ |
| 966 | |
Jiri Pirko | ccffad25 | 2009-05-22 23:22:17 +0000 | [diff] [blame] | 967 | spinlock_t addr_list_lock; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 968 | struct netdev_hw_addr_list uc; /* Unicast mac addresses */ |
| 969 | struct netdev_hw_addr_list mc; /* Multicast mac addresses */ |
| 970 | int uc_promisc; |
Wang Chen | 9d45abe | 2008-06-17 21:12:48 -0700 | [diff] [blame] | 971 | unsigned int promiscuity; |
| 972 | unsigned int allmulti; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | |
| 975 | /* Protocol specific pointers */ |
Jesse Gross | 65ac6a5 | 2010-10-20 13:56:05 +0000 | [diff] [blame] | 976 | |
| 977 | #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) |
Eric Dumazet | b616b09 | 2010-10-24 21:31:58 +0000 | [diff] [blame] | 978 | struct vlan_group __rcu *vlgrp; /* VLAN group */ |
Jesse Gross | 65ac6a5 | 2010-10-20 13:56:05 +0000 | [diff] [blame] | 979 | #endif |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 980 | #ifdef CONFIG_NET_DSA |
| 981 | void *dsa_ptr; /* dsa specific data */ |
| 982 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | void *atalk_ptr; /* AppleTalk link */ |
Eric Dumazet | 95ae6b2 | 2010-09-15 04:04:31 +0000 | [diff] [blame] | 984 | struct in_device __rcu *ip_ptr; /* IPv4 specific data */ |
Eric Dumazet | fc766e4c | 2010-10-29 03:09:24 +0000 | [diff] [blame] | 985 | struct dn_dev __rcu *dn_ptr; /* DECnet specific data */ |
Eric Dumazet | 198caec | 2010-10-24 21:32:05 +0000 | [diff] [blame] | 986 | struct inet6_dev __rcu *ip6_ptr; /* IPv6 specific data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | void *ec_ptr; /* Econet specific data */ |
| 988 | void *ax25_ptr; /* AX.25 specific data */ |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 989 | struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, |
| 990 | assign before registering */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 992 | /* |
Eric Dumazet | cd13539 | 2010-09-16 02:58:13 +0000 | [diff] [blame] | 993 | * Cache lines mostly used on receive path (including eth_type_trans()) |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 994 | */ |
Eric Dumazet | 4dc8913 | 2010-08-31 07:40:16 +0000 | [diff] [blame] | 995 | unsigned long last_rx; /* Time of last Rx |
| 996 | * This should not be set in |
| 997 | * drivers, unless really needed, |
| 998 | * because network stack (bonding) |
| 999 | * use it if/when necessary, to |
| 1000 | * avoid dirtying this cache line. |
| 1001 | */ |
| 1002 | |
Eric Dumazet | cd13539 | 2010-09-16 02:58:13 +0000 | [diff] [blame] | 1003 | struct net_device *master; /* Pointer to master device of a group, |
| 1004 | * which this device is member of. |
| 1005 | */ |
| 1006 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1007 | /* Interface address info used in eth_type_trans() */ |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 1008 | unsigned char *dev_addr; /* hw address, (before bcast |
| 1009 | because most packets are |
| 1010 | unicast) */ |
| 1011 | |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 1012 | struct netdev_hw_addr_list dev_addrs; /* list of device |
| 1013 | hw addresses */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1015 | unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ |
| 1016 | |
Eric Dumazet | df33454 | 2010-03-24 19:13:54 +0000 | [diff] [blame] | 1017 | #ifdef CONFIG_RPS |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1018 | struct kset *queues_kset; |
| 1019 | |
| 1020 | struct netdev_rx_queue *_rx; |
| 1021 | |
Ben Hutchings | 62fe0b4 | 2010-09-27 08:24:33 +0000 | [diff] [blame] | 1022 | /* Number of RX queues allocated at register_netdev() time */ |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1023 | unsigned int num_rx_queues; |
Ben Hutchings | 62fe0b4 | 2010-09-27 08:24:33 +0000 | [diff] [blame] | 1024 | |
| 1025 | /* Number of RX queues currently active in device */ |
| 1026 | unsigned int real_num_rx_queues; |
Eric Dumazet | df33454 | 2010-03-24 19:13:54 +0000 | [diff] [blame] | 1027 | #endif |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1028 | |
stephen hemminger | 61391cd | 2010-11-15 06:38:12 +0000 | [diff] [blame] | 1029 | rx_handler_func_t __rcu *rx_handler; |
| 1030 | void __rcu *rx_handler_data; |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1031 | |
Eric Dumazet | 24824a0 | 2010-10-02 06:11:55 +0000 | [diff] [blame] | 1032 | struct netdev_queue __rcu *ingress_queue; |
Eric Dumazet | cd13539 | 2010-09-16 02:58:13 +0000 | [diff] [blame] | 1033 | |
| 1034 | /* |
| 1035 | * Cache lines mostly used on transmit path |
| 1036 | */ |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1037 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1038 | |
| 1039 | /* Number of TX queues allocated at alloc_netdev_mq() time */ |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1040 | unsigned int num_tx_queues; |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1041 | |
| 1042 | /* Number of TX queues currently active in device */ |
| 1043 | unsigned int real_num_tx_queues; |
| 1044 | |
Patrick McHardy | af356af | 2009-09-04 06:41:18 +0000 | [diff] [blame] | 1045 | /* root qdisc from userspace point of view */ |
| 1046 | struct Qdisc *qdisc; |
| 1047 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | unsigned long tx_queue_len; /* Max frames per queue allowed */ |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1049 | spinlock_t tx_global_lock; |
Eric Dumazet | cd13539 | 2010-09-16 02:58:13 +0000 | [diff] [blame] | 1050 | |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 1051 | #ifdef CONFIG_XPS |
Eric Dumazet | a417786 | 2010-11-28 21:43:02 +0000 | [diff] [blame^] | 1052 | struct xps_dev_maps __rcu *xps_maps; |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 1053 | #endif |
Tom Herbert | 1d24eb4 | 2010-11-21 13:17:27 +0000 | [diff] [blame] | 1054 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1055 | /* These may be needed for future network-power-down code. */ |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 1056 | |
| 1057 | /* |
| 1058 | * trans_start here is expensive for high speed devices on SMP, |
| 1059 | * please use netdev_queue->trans_start instead. |
| 1060 | */ |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1061 | unsigned long trans_start; /* Time (in jiffies) of last Tx */ |
| 1062 | |
| 1063 | int watchdog_timeo; /* used by dev_watchdog() */ |
| 1064 | struct timer_list watchdog_timer; |
| 1065 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | /* Number of references to this device */ |
Eric Dumazet | 29b4433 | 2010-10-11 10:22:12 +0000 | [diff] [blame] | 1067 | int __percpu *pcpu_refcnt; |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1068 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | /* delayed register/unregister */ |
| 1070 | struct list_head todo_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | /* device index hash chain */ |
| 1072 | struct hlist_node index_hlist; |
| 1073 | |
Eric Dumazet | e014deb | 2009-11-17 05:59:21 +0000 | [diff] [blame] | 1074 | struct list_head link_watch_list; |
Herbert Xu | 572a103 | 2007-05-08 18:34:17 -0700 | [diff] [blame] | 1075 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | /* register/unregister state machine */ |
| 1077 | enum { NETREG_UNINITIALIZED=0, |
Stephen Hemminger | b17a7c1 | 2006-05-10 13:21:17 -0700 | [diff] [blame] | 1078 | NETREG_REGISTERED, /* completed register_netdevice */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
| 1080 | NETREG_UNREGISTERED, /* completed unregister todo */ |
| 1081 | NETREG_RELEASED, /* called free_netdev */ |
Benjamin Herrenschmidt | 937f1ba | 2009-01-14 21:05:05 -0800 | [diff] [blame] | 1082 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
Patrick McHardy | a283576 | 2010-02-26 06:34:51 +0000 | [diff] [blame] | 1083 | } reg_state:16; |
| 1084 | |
| 1085 | enum { |
| 1086 | RTNL_LINK_INITIALIZED, |
| 1087 | RTNL_LINK_INITIALIZING, |
| 1088 | } rtnl_link_state:16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1090 | /* Called from unregister, can be used to call free_netdev */ |
| 1091 | void (*destructor)(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | #ifdef CONFIG_NETPOLL |
Jeff Moyer | 115c1d6 | 2005-06-22 22:05:31 -0700 | [diff] [blame] | 1094 | struct netpoll_info *npinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | #endif |
David S. Miller | eae792b | 2008-07-15 03:03:33 -0700 | [diff] [blame] | 1096 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1097 | #ifdef CONFIG_NET_NS |
Eric W. Biederman | 4a1c537 | 2007-09-12 11:56:32 +0200 | [diff] [blame] | 1098 | /* Network namespace this network device is inside */ |
| 1099 | struct net *nd_net; |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1100 | #endif |
Eric W. Biederman | 4a1c537 | 2007-09-12 11:56:32 +0200 | [diff] [blame] | 1101 | |
David S. Miller | 4951704 | 2008-05-12 03:29:11 -0700 | [diff] [blame] | 1102 | /* mid-layer private */ |
Eric Dumazet | a7855c7 | 2010-09-23 23:51:51 +0000 | [diff] [blame] | 1103 | union { |
| 1104 | void *ml_priv; |
| 1105 | struct pcpu_lstats __percpu *lstats; /* loopback stats */ |
Eric Dumazet | 290b895 | 2010-09-27 00:33:35 +0000 | [diff] [blame] | 1106 | struct pcpu_tstats __percpu *tstats; /* tunnel stats */ |
Eric Dumazet | 6d81f41 | 2010-09-27 20:50:33 +0000 | [diff] [blame] | 1107 | struct pcpu_dstats __percpu *dstats; /* dummy stats */ |
Eric Dumazet | a7855c7 | 2010-09-23 23:51:51 +0000 | [diff] [blame] | 1108 | }; |
Patrick McHardy | eca9eba | 2008-07-05 21:26:13 -0700 | [diff] [blame] | 1109 | /* GARP */ |
Eric Dumazet | 3cc77ec | 2010-10-24 21:32:36 +0000 | [diff] [blame] | 1110 | struct garp_port __rcu *garp_port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | /* class/net/name entry */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1113 | struct device dev; |
Eric W. Biederman | 0c509a6 | 2009-10-29 14:18:21 +0000 | [diff] [blame] | 1114 | /* space for optional device, statistics, and wireless sysfs groups */ |
| 1115 | const struct attribute_group *sysfs_groups[4]; |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1116 | |
| 1117 | /* rtnetlink link ops */ |
| 1118 | const struct rtnl_link_ops *rtnl_link_ops; |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1119 | |
Patrick McHardy | 289c79a | 2008-05-23 00:22:04 -0700 | [diff] [blame] | 1120 | /* VLAN feature mask */ |
| 1121 | unsigned long vlan_features; |
| 1122 | |
Peter P Waskiewicz Jr | 82cc1a7 | 2008-03-21 03:43:19 -0700 | [diff] [blame] | 1123 | /* for setting kernel sock attribute on TCP connection setup */ |
| 1124 | #define GSO_MAX_SIZE 65536 |
| 1125 | unsigned int gso_max_size; |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1126 | |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 1127 | #ifdef CONFIG_DCB |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1128 | /* Data Center Bridging netlink ops */ |
Stephen Hemminger | 3295354 | 2009-10-05 06:01:03 +0000 | [diff] [blame] | 1129 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1130 | #endif |
| 1131 | |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 1132 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
| 1133 | /* max exchange id for FCoE LRO by ddp */ |
| 1134 | unsigned int fcoe_ddp_xid; |
| 1135 | #endif |
Peter P Waskiewicz Jr | 15682bc | 2010-02-10 20:03:05 -0800 | [diff] [blame] | 1136 | /* n-tuple filter list attached to this device */ |
| 1137 | struct ethtool_rx_ntuple_list ethtool_ntuple_list; |
Richard Cochran | c1f19b5 | 2010-07-17 08:49:36 +0000 | [diff] [blame] | 1138 | |
| 1139 | /* phy device may attach itself for hardware timestamping */ |
| 1140 | struct phy_device *phydev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | }; |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1142 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | |
| 1144 | #define NETDEV_ALIGN 32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1146 | static inline |
| 1147 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, |
| 1148 | unsigned int index) |
| 1149 | { |
| 1150 | return &dev->_tx[index]; |
| 1151 | } |
| 1152 | |
| 1153 | static inline void netdev_for_each_tx_queue(struct net_device *dev, |
| 1154 | void (*f)(struct net_device *, |
| 1155 | struct netdev_queue *, |
| 1156 | void *), |
| 1157 | void *arg) |
| 1158 | { |
| 1159 | unsigned int i; |
| 1160 | |
| 1161 | for (i = 0; i < dev->num_tx_queues; i++) |
| 1162 | f(dev, &dev->_tx[i], arg); |
| 1163 | } |
| 1164 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1165 | /* |
| 1166 | * Net namespace inlines |
| 1167 | */ |
| 1168 | static inline |
| 1169 | struct net *dev_net(const struct net_device *dev) |
| 1170 | { |
Eric Dumazet | c2d9ba9 | 2010-06-01 06:51:19 +0000 | [diff] [blame] | 1171 | return read_pnet(&dev->nd_net); |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1172 | } |
| 1173 | |
| 1174 | static inline |
Denis V. Lunev | f5aa23f | 2008-03-26 00:48:17 -0700 | [diff] [blame] | 1175 | void dev_net_set(struct net_device *dev, struct net *net) |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1176 | { |
| 1177 | #ifdef CONFIG_NET_NS |
Denis V. Lunev | f3005d7 | 2008-04-16 02:02:18 -0700 | [diff] [blame] | 1178 | release_net(dev->nd_net); |
| 1179 | dev->nd_net = hold_net(net); |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1180 | #endif |
| 1181 | } |
| 1182 | |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 1183 | static inline bool netdev_uses_dsa_tags(struct net_device *dev) |
| 1184 | { |
| 1185 | #ifdef CONFIG_NET_DSA_TAG_DSA |
| 1186 | if (dev->dsa_ptr != NULL) |
| 1187 | return dsa_uses_dsa_tags(dev->dsa_ptr); |
| 1188 | #endif |
| 1189 | |
| 1190 | return 0; |
| 1191 | } |
| 1192 | |
Arnd Bergmann | 8a83a00 | 2010-01-30 12:23:03 +0000 | [diff] [blame] | 1193 | #ifndef CONFIG_NET_NS |
| 1194 | static inline void skb_set_dev(struct sk_buff *skb, struct net_device *dev) |
| 1195 | { |
| 1196 | skb->dev = dev; |
| 1197 | } |
| 1198 | #else /* CONFIG_NET_NS */ |
| 1199 | void skb_set_dev(struct sk_buff *skb, struct net_device *dev); |
| 1200 | #endif |
| 1201 | |
Lennert Buytenhek | 396138f0 | 2008-10-07 13:46:07 +0000 | [diff] [blame] | 1202 | static inline bool netdev_uses_trailer_tags(struct net_device *dev) |
| 1203 | { |
| 1204 | #ifdef CONFIG_NET_DSA_TAG_TRAILER |
| 1205 | if (dev->dsa_ptr != NULL) |
| 1206 | return dsa_uses_trailer_tags(dev->dsa_ptr); |
| 1207 | #endif |
| 1208 | |
| 1209 | return 0; |
| 1210 | } |
| 1211 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1212 | /** |
| 1213 | * netdev_priv - access network device private data |
| 1214 | * @dev: network device |
| 1215 | * |
| 1216 | * Get network device private data |
| 1217 | */ |
Patrick McHardy | 6472ce6 | 2007-06-13 12:03:21 -0700 | [diff] [blame] | 1218 | static inline void *netdev_priv(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | { |
Eric Dumazet | 1ce8e7b | 2009-05-27 04:42:37 +0000 | [diff] [blame] | 1220 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | } |
| 1222 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | /* Set the sysfs physical device reference for the network logical device |
| 1224 | * if set prior to registration will cause a symlink during initialization. |
| 1225 | */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1226 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | |
Marcel Holtmann | 384912e | 2009-08-31 21:08:19 +0000 | [diff] [blame] | 1228 | /* Set the sysfs device type for the network logical device to allow |
| 1229 | * fin grained indentification of different network device types. For |
| 1230 | * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc. |
| 1231 | */ |
| 1232 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) |
| 1233 | |
Stephen Hemminger | 3b582cc | 2007-11-01 02:21:47 -0700 | [diff] [blame] | 1234 | /** |
| 1235 | * netif_napi_add - initialize a napi context |
| 1236 | * @dev: network device |
| 1237 | * @napi: napi context |
| 1238 | * @poll: polling function |
| 1239 | * @weight: default weight |
| 1240 | * |
| 1241 | * netif_napi_add() must be used to initialize a napi context prior to calling |
| 1242 | * *any* of the other napi related functions. |
| 1243 | */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1244 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
| 1245 | int (*poll)(struct napi_struct *, int), int weight); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1246 | |
Alexander Duyck | d815653 | 2008-07-08 15:13:05 -0700 | [diff] [blame] | 1247 | /** |
| 1248 | * netif_napi_del - remove a napi context |
| 1249 | * @napi: napi context |
| 1250 | * |
| 1251 | * netif_napi_del() removes a napi context from the network device napi list |
| 1252 | */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1253 | void netif_napi_del(struct napi_struct *napi); |
| 1254 | |
| 1255 | struct napi_gro_cb { |
Herbert Xu | 78a478d | 2009-05-26 18:50:21 +0000 | [diff] [blame] | 1256 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
| 1257 | void *frag0; |
| 1258 | |
Herbert Xu | 7489594 | 2009-05-26 18:50:27 +0000 | [diff] [blame] | 1259 | /* Length of frag0. */ |
| 1260 | unsigned int frag0_len; |
| 1261 | |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1262 | /* This indicates where we are processing relative to skb->data. */ |
| 1263 | int data_offset; |
| 1264 | |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1265 | /* This is non-zero if the packet may be of the same flow. */ |
| 1266 | int same_flow; |
| 1267 | |
| 1268 | /* This is non-zero if the packet cannot be merged with the new skb. */ |
| 1269 | int flush; |
| 1270 | |
| 1271 | /* Number of segments aggregated. */ |
| 1272 | int count; |
Herbert Xu | 5d38a07 | 2009-01-04 16:13:40 -0800 | [diff] [blame] | 1273 | |
| 1274 | /* Free the skb? */ |
| 1275 | int free; |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1276 | }; |
| 1277 | |
| 1278 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) |
Alexander Duyck | d815653 | 2008-07-08 15:13:05 -0700 | [diff] [blame] | 1279 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | struct packet_type { |
David S. Miller | f2ccd8f | 2005-08-09 19:34:12 -0700 | [diff] [blame] | 1281 | __be16 type; /* This is really htons(ether_type). */ |
| 1282 | struct net_device *dev; /* NULL is wildcarded here */ |
| 1283 | int (*func) (struct sk_buff *, |
| 1284 | struct net_device *, |
| 1285 | struct packet_type *, |
| 1286 | struct net_device *); |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 1287 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
| 1288 | int features); |
Herbert Xu | a430a43 | 2006-07-08 13:34:56 -0700 | [diff] [blame] | 1289 | int (*gso_send_check)(struct sk_buff *skb); |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1290 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
| 1291 | struct sk_buff *skb); |
| 1292 | int (*gro_complete)(struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | void *af_packet_priv; |
| 1294 | struct list_head list; |
| 1295 | }; |
| 1296 | |
| 1297 | #include <linux/interrupt.h> |
| 1298 | #include <linux/notifier.h> |
| 1299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | extern rwlock_t dev_base_lock; /* Device list lock */ |
| 1301 | |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1302 | |
| 1303 | #define for_each_netdev(net, d) \ |
| 1304 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) |
Eric W. Biederman | dcbccbd4 | 2009-11-29 22:25:26 +0000 | [diff] [blame] | 1305 | #define for_each_netdev_reverse(net, d) \ |
| 1306 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) |
Eric Dumazet | c6d14c8 | 2009-11-04 05:43:23 -0800 | [diff] [blame] | 1307 | #define for_each_netdev_rcu(net, d) \ |
| 1308 | 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] | 1309 | #define for_each_netdev_safe(net, d, n) \ |
| 1310 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) |
| 1311 | #define for_each_netdev_continue(net, d) \ |
| 1312 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) |
stephen hemminger | 254245d | 2009-11-10 07:54:47 +0000 | [diff] [blame] | 1313 | #define for_each_netdev_continue_rcu(net, d) \ |
| 1314 | 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] | 1315 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
| 1316 | |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 1317 | static inline struct net_device *next_net_device(struct net_device *dev) |
| 1318 | { |
| 1319 | struct list_head *lh; |
| 1320 | struct net *net; |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 1321 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1322 | net = dev_net(dev); |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 1323 | lh = dev->dev_list.next; |
| 1324 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
| 1325 | } |
| 1326 | |
Eric Dumazet | ce81b76 | 2009-11-11 17:34:30 +0000 | [diff] [blame] | 1327 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
| 1328 | { |
| 1329 | struct list_head *lh; |
| 1330 | struct net *net; |
| 1331 | |
| 1332 | net = dev_net(dev); |
| 1333 | lh = rcu_dereference(dev->dev_list.next); |
| 1334 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
| 1335 | } |
| 1336 | |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 1337 | static inline struct net_device *first_net_device(struct net *net) |
| 1338 | { |
| 1339 | return list_empty(&net->dev_base_head) ? NULL : |
| 1340 | net_device_entry(net->dev_base_head.next); |
| 1341 | } |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 1342 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | extern int netdev_boot_setup_check(struct net_device *dev); |
| 1344 | extern unsigned long netdev_boot_base(const char *prefix, int unit); |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1345 | extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr); |
| 1346 | extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); |
| 1347 | extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | extern void dev_add_pack(struct packet_type *pt); |
| 1349 | extern void dev_remove_pack(struct packet_type *pt); |
| 1350 | extern void __dev_remove_pack(struct packet_type *pt); |
| 1351 | |
Eric Dumazet | bb69ae0 | 2010-06-07 11:42:13 +0000 | [diff] [blame] | 1352 | extern struct net_device *dev_get_by_flags_rcu(struct net *net, unsigned short flags, |
| 1353 | unsigned short mask); |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1354 | 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] | 1355 | 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] | 1356 | 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] | 1357 | extern int dev_alloc_name(struct net_device *dev, const char *name); |
| 1358 | extern int dev_open(struct net_device *dev); |
| 1359 | extern int dev_close(struct net_device *dev); |
Ben Hutchings | 0187bdf | 2008-06-19 16:15:47 -0700 | [diff] [blame] | 1360 | extern void dev_disable_lro(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | extern int dev_queue_xmit(struct sk_buff *skb); |
| 1362 | extern int register_netdevice(struct net_device *dev); |
Eric Dumazet | 44a0873 | 2009-10-27 07:03:04 +0000 | [diff] [blame] | 1363 | extern void unregister_netdevice_queue(struct net_device *dev, |
| 1364 | struct list_head *head); |
Eric Dumazet | 9b5e383 | 2009-10-27 07:04:19 +0000 | [diff] [blame] | 1365 | extern void unregister_netdevice_many(struct list_head *head); |
Eric Dumazet | 44a0873 | 2009-10-27 07:03:04 +0000 | [diff] [blame] | 1366 | static inline void unregister_netdevice(struct net_device *dev) |
| 1367 | { |
| 1368 | unregister_netdevice_queue(dev, NULL); |
| 1369 | } |
| 1370 | |
Eric Dumazet | 29b4433 | 2010-10-11 10:22:12 +0000 | [diff] [blame] | 1371 | extern int netdev_refcnt_read(const struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | extern void free_netdev(struct net_device *dev); |
| 1373 | extern void synchronize_net(void); |
| 1374 | extern int register_netdevice_notifier(struct notifier_block *nb); |
| 1375 | extern int unregister_netdevice_notifier(struct notifier_block *nb); |
Benjamin Herrenschmidt | 937f1ba | 2009-01-14 21:05:05 -0800 | [diff] [blame] | 1376 | extern int init_dummy_netdev(struct net_device *dev); |
David S. Miller | 9d40bbd | 2009-03-04 23:46:25 -0800 | [diff] [blame] | 1377 | extern void netdev_resync_ops(struct net_device *dev); |
Benjamin Herrenschmidt | 937f1ba | 2009-01-14 21:05:05 -0800 | [diff] [blame] | 1378 | |
Eric W. Biederman | ad7379d | 2007-09-16 15:33:32 -0700 | [diff] [blame] | 1379 | 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] | 1380 | extern struct net_device *dev_get_by_index(struct net *net, int ifindex); |
| 1381 | 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] | 1382 | 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] | 1383 | extern int dev_restart(struct net_device *dev); |
| 1384 | #ifdef CONFIG_NETPOLL_TRAP |
| 1385 | extern int netpoll_trap(void); |
| 1386 | #endif |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1387 | extern int skb_gro_receive(struct sk_buff **head, |
| 1388 | struct sk_buff *skb); |
Herbert Xu | 78a478d | 2009-05-26 18:50:21 +0000 | [diff] [blame] | 1389 | extern void skb_gro_reset_offset(struct sk_buff *skb); |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1390 | |
| 1391 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) |
| 1392 | { |
| 1393 | return NAPI_GRO_CB(skb)->data_offset; |
| 1394 | } |
| 1395 | |
| 1396 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) |
| 1397 | { |
| 1398 | return skb->len - NAPI_GRO_CB(skb)->data_offset; |
| 1399 | } |
| 1400 | |
| 1401 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) |
| 1402 | { |
| 1403 | NAPI_GRO_CB(skb)->data_offset += len; |
| 1404 | } |
| 1405 | |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 1406 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
| 1407 | unsigned int offset) |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1408 | { |
Herbert Xu | 78a478d | 2009-05-26 18:50:21 +0000 | [diff] [blame] | 1409 | return NAPI_GRO_CB(skb)->frag0 + offset; |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1410 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 1412 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
| 1413 | { |
| 1414 | return NAPI_GRO_CB(skb)->frag0_len < hlen; |
| 1415 | } |
| 1416 | |
| 1417 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
| 1418 | unsigned int offset) |
| 1419 | { |
| 1420 | NAPI_GRO_CB(skb)->frag0 = NULL; |
| 1421 | NAPI_GRO_CB(skb)->frag0_len = 0; |
| 1422 | return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL; |
| 1423 | } |
| 1424 | |
Herbert Xu | aa4b9f5 | 2009-02-08 18:00:37 +0000 | [diff] [blame] | 1425 | static inline void *skb_gro_mac_header(struct sk_buff *skb) |
| 1426 | { |
Herbert Xu | 78d3fd0 | 2009-05-26 18:50:23 +0000 | [diff] [blame] | 1427 | return NAPI_GRO_CB(skb)->frag0 ?: skb_mac_header(skb); |
Herbert Xu | aa4b9f5 | 2009-02-08 18:00:37 +0000 | [diff] [blame] | 1428 | } |
| 1429 | |
Herbert Xu | 36e7b1b | 2009-04-27 05:44:45 -0700 | [diff] [blame] | 1430 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
| 1431 | { |
Herbert Xu | 78d3fd0 | 2009-05-26 18:50:23 +0000 | [diff] [blame] | 1432 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
| 1433 | skb_network_offset(skb); |
Herbert Xu | 36e7b1b | 2009-04-27 05:44:45 -0700 | [diff] [blame] | 1434 | } |
| 1435 | |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 1436 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
| 1437 | unsigned short type, |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1438 | const void *daddr, const void *saddr, |
| 1439 | unsigned len) |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 1440 | { |
Ursula Braun | f1ecfd5 | 2007-10-22 16:16:14 +0200 | [diff] [blame] | 1441 | if (!dev->header_ops || !dev->header_ops->create) |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 1442 | return 0; |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1443 | |
| 1444 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 1445 | } |
| 1446 | |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 1447 | static inline int dev_parse_header(const struct sk_buff *skb, |
| 1448 | unsigned char *haddr) |
| 1449 | { |
| 1450 | const struct net_device *dev = skb->dev; |
| 1451 | |
Patrick McHardy | 1b83336 | 2007-10-18 05:09:28 -0700 | [diff] [blame] | 1452 | if (!dev->header_ops || !dev->header_ops->parse) |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 1453 | return 0; |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1454 | return dev->header_ops->parse(skb, haddr); |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 1455 | } |
| 1456 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
| 1458 | extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); |
| 1459 | static inline int unregister_gifconf(unsigned int family) |
| 1460 | { |
| 1461 | return register_gifconf(family, NULL); |
| 1462 | } |
| 1463 | |
| 1464 | /* |
Eric Dumazet | 8875127 | 2010-04-19 05:07:33 +0000 | [diff] [blame] | 1465 | * Incoming packets are placed on per-cpu queues |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | */ |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 1467 | struct softnet_data { |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1468 | struct Qdisc *output_queue; |
Changli Gao | a9cbd58 | 2010-04-26 23:06:24 +0000 | [diff] [blame] | 1469 | struct Qdisc **output_queue_tailp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | struct list_head poll_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | struct sk_buff *completion_queue; |
Changli Gao | 6e7676c | 2010-04-27 15:07:33 -0700 | [diff] [blame] | 1472 | struct sk_buff_head process_queue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | |
Changli Gao | dee4287 | 2010-05-02 05:42:16 +0000 | [diff] [blame] | 1474 | /* stats */ |
David S. Miller | cd7b539 | 2010-05-02 22:27:59 -0700 | [diff] [blame] | 1475 | unsigned int processed; |
| 1476 | unsigned int time_squeeze; |
| 1477 | unsigned int cpu_collision; |
| 1478 | unsigned int received_rps; |
Changli Gao | dee4287 | 2010-05-02 05:42:16 +0000 | [diff] [blame] | 1479 | |
Changli Gao | fd793d8 | 2010-04-15 00:16:59 -0700 | [diff] [blame] | 1480 | #ifdef CONFIG_RPS |
Eric Dumazet | 8875127 | 2010-04-19 05:07:33 +0000 | [diff] [blame] | 1481 | struct softnet_data *rps_ipi_list; |
| 1482 | |
| 1483 | /* Elements below can be accessed between CPUs for RPS */ |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1484 | struct call_single_data csd ____cacheline_aligned_in_smp; |
Eric Dumazet | 8875127 | 2010-04-19 05:07:33 +0000 | [diff] [blame] | 1485 | struct softnet_data *rps_ipi_next; |
| 1486 | unsigned int cpu; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 1487 | unsigned int input_queue_head; |
Tom Herbert | 76cc8b1 | 2010-05-20 18:37:59 +0000 | [diff] [blame] | 1488 | unsigned int input_queue_tail; |
Tom Herbert | 1e94d72 | 2010-03-18 17:45:44 -0700 | [diff] [blame] | 1489 | #endif |
Changli Gao | dee4287 | 2010-05-02 05:42:16 +0000 | [diff] [blame] | 1490 | unsigned dropped; |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1491 | struct sk_buff_head input_pkt_queue; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1492 | struct napi_struct backlog; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | }; |
| 1494 | |
Tom Herbert | 76cc8b1 | 2010-05-20 18:37:59 +0000 | [diff] [blame] | 1495 | static inline void input_queue_head_incr(struct softnet_data *sd) |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 1496 | { |
| 1497 | #ifdef CONFIG_RPS |
Tom Herbert | 76cc8b1 | 2010-05-20 18:37:59 +0000 | [diff] [blame] | 1498 | sd->input_queue_head++; |
| 1499 | #endif |
| 1500 | } |
| 1501 | |
| 1502 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, |
| 1503 | unsigned int *qtail) |
| 1504 | { |
| 1505 | #ifdef CONFIG_RPS |
| 1506 | *qtail = ++sd->input_queue_tail; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 1507 | #endif |
| 1508 | } |
| 1509 | |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1510 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | |
| 1512 | #define HAVE_NETIF_QUEUE |
| 1513 | |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1514 | extern void __netif_schedule(struct Qdisc *q); |
David S. Miller | 86d804e | 2008-07-08 23:11:25 -0700 | [diff] [blame] | 1515 | |
| 1516 | static inline void netif_schedule_queue(struct netdev_queue *txq) |
| 1517 | { |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 1518 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1519 | __netif_schedule(txq->qdisc); |
David S. Miller | 86d804e | 2008-07-08 23:11:25 -0700 | [diff] [blame] | 1520 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1522 | static inline void netif_tx_schedule_all(struct net_device *dev) |
| 1523 | { |
| 1524 | unsigned int i; |
| 1525 | |
| 1526 | for (i = 0; i < dev->num_tx_queues; i++) |
| 1527 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); |
| 1528 | } |
| 1529 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 1530 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
| 1531 | { |
| 1532 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); |
| 1533 | } |
| 1534 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1535 | /** |
| 1536 | * netif_start_queue - allow transmit |
| 1537 | * @dev: network device |
| 1538 | * |
| 1539 | * Allow upper layers to call the device hard_start_xmit routine. |
| 1540 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | static inline void netif_start_queue(struct net_device *dev) |
| 1542 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1543 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | } |
| 1545 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1546 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
| 1547 | { |
| 1548 | unsigned int i; |
| 1549 | |
| 1550 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 1551 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 1552 | netif_tx_start_queue(txq); |
| 1553 | } |
| 1554 | } |
| 1555 | |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 1556 | static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | { |
| 1558 | #ifdef CONFIG_NETPOLL_TRAP |
Sergei Shtylyov | 5f286e1 | 2007-04-28 20:57:37 -0700 | [diff] [blame] | 1559 | if (netpoll_trap()) { |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 1560 | netif_tx_start_queue(dev_queue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1561 | return; |
Sergei Shtylyov | 5f286e1 | 2007-04-28 20:57:37 -0700 | [diff] [blame] | 1562 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | #endif |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 1564 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state)) |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1565 | __netif_schedule(dev_queue->qdisc); |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 1566 | } |
| 1567 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 1568 | /** |
| 1569 | * netif_wake_queue - restart transmit |
| 1570 | * @dev: network device |
| 1571 | * |
| 1572 | * Allow upper layers to call the device hard_start_xmit routine. |
| 1573 | * Used for flow control when transmit resources are available. |
| 1574 | */ |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 1575 | static inline void netif_wake_queue(struct net_device *dev) |
| 1576 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1577 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | } |
| 1579 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1580 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
| 1581 | { |
| 1582 | unsigned int i; |
| 1583 | |
| 1584 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 1585 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 1586 | netif_tx_wake_queue(txq); |
| 1587 | } |
| 1588 | } |
| 1589 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 1590 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
| 1591 | { |
Guillaume Chazarain | 18543a6 | 2010-11-06 06:39:32 +0000 | [diff] [blame] | 1592 | if (WARN_ON(!dev_queue)) { |
| 1593 | printk(KERN_INFO "netif_stop_queue() cannot be called before " |
| 1594 | "register_netdev()"); |
| 1595 | return; |
| 1596 | } |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 1597 | set_bit(__QUEUE_STATE_XOFF, &dev_queue->state); |
| 1598 | } |
| 1599 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1600 | /** |
| 1601 | * netif_stop_queue - stop transmitted packets |
| 1602 | * @dev: network device |
| 1603 | * |
| 1604 | * Stop upper layers calling the device hard_start_xmit routine. |
| 1605 | * Used for flow control when transmit resources are unavailable. |
| 1606 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | static inline void netif_stop_queue(struct net_device *dev) |
| 1608 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1609 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1610 | } |
| 1611 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1612 | static inline void netif_tx_stop_all_queues(struct net_device *dev) |
| 1613 | { |
| 1614 | unsigned int i; |
| 1615 | |
| 1616 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 1617 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 1618 | netif_tx_stop_queue(txq); |
| 1619 | } |
| 1620 | } |
| 1621 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 1622 | static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
| 1623 | { |
| 1624 | return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state); |
| 1625 | } |
| 1626 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1627 | /** |
| 1628 | * netif_queue_stopped - test if transmit queue is flowblocked |
| 1629 | * @dev: network device |
| 1630 | * |
| 1631 | * Test if transmit queue on device is currently unable to send. |
| 1632 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1633 | static inline int netif_queue_stopped(const struct net_device *dev) |
| 1634 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1635 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | } |
| 1637 | |
Eric Dumazet | 5a0d226 | 2010-11-23 10:42:02 +0000 | [diff] [blame] | 1638 | static inline int netif_tx_queue_frozen_or_stopped(const struct netdev_queue *dev_queue) |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1639 | { |
Eric Dumazet | 5a0d226 | 2010-11-23 10:42:02 +0000 | [diff] [blame] | 1640 | return dev_queue->state & QUEUE_STATE_XOFF_OR_FROZEN; |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1641 | } |
| 1642 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1643 | /** |
| 1644 | * netif_running - test if up |
| 1645 | * @dev: network device |
| 1646 | * |
| 1647 | * Test if the device has been brought up. |
| 1648 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | static inline int netif_running(const struct net_device *dev) |
| 1650 | { |
| 1651 | return test_bit(__LINK_STATE_START, &dev->state); |
| 1652 | } |
| 1653 | |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1654 | /* |
| 1655 | * Routines to manage the subqueues on a device. We only need start |
| 1656 | * stop, and a check if it's stopped. All other device management is |
| 1657 | * done at the overall netdevice level. |
| 1658 | * Also test the device if we're multiqueue. |
| 1659 | */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1660 | |
| 1661 | /** |
| 1662 | * netif_start_subqueue - allow sending packets on subqueue |
| 1663 | * @dev: network device |
| 1664 | * @queue_index: sub queue index |
| 1665 | * |
| 1666 | * Start individual transmit queue of a device with multiple transmit queues. |
| 1667 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1668 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
| 1669 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1670 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 1671 | |
| 1672 | netif_tx_start_queue(txq); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1673 | } |
| 1674 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1675 | /** |
| 1676 | * netif_stop_subqueue - stop sending packets on subqueue |
| 1677 | * @dev: network device |
| 1678 | * @queue_index: sub queue index |
| 1679 | * |
| 1680 | * Stop individual transmit queue of a device with multiple transmit queues. |
| 1681 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1682 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
| 1683 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1684 | 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] | 1685 | #ifdef CONFIG_NETPOLL_TRAP |
| 1686 | if (netpoll_trap()) |
| 1687 | return; |
| 1688 | #endif |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 1689 | netif_tx_stop_queue(txq); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1690 | } |
| 1691 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1692 | /** |
| 1693 | * netif_subqueue_stopped - test status of subqueue |
| 1694 | * @dev: network device |
| 1695 | * @queue_index: sub queue index |
| 1696 | * |
| 1697 | * Check individual transmit queue of a device with multiple transmit queues. |
| 1698 | */ |
Pavel Emelyanov | 668f895 | 2007-10-21 17:01:56 -0700 | [diff] [blame] | 1699 | 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] | 1700 | u16 queue_index) |
| 1701 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1702 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 1703 | |
| 1704 | return netif_tx_queue_stopped(txq); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1705 | } |
| 1706 | |
Pavel Emelyanov | 668f895 | 2007-10-21 17:01:56 -0700 | [diff] [blame] | 1707 | static inline int netif_subqueue_stopped(const struct net_device *dev, |
| 1708 | struct sk_buff *skb) |
| 1709 | { |
| 1710 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); |
| 1711 | } |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1712 | |
| 1713 | /** |
| 1714 | * netif_wake_subqueue - allow sending packets on subqueue |
| 1715 | * @dev: network device |
| 1716 | * @queue_index: sub queue index |
| 1717 | * |
| 1718 | * Resume individual transmit queue of a device with multiple transmit queues. |
| 1719 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1720 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) |
| 1721 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1722 | 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] | 1723 | #ifdef CONFIG_NETPOLL_TRAP |
| 1724 | if (netpoll_trap()) |
| 1725 | return; |
| 1726 | #endif |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1727 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state)) |
David S. Miller | 37437bb | 2008-07-16 02:15:04 -0700 | [diff] [blame] | 1728 | __netif_schedule(txq->qdisc); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1729 | } |
| 1730 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1731 | /** |
| 1732 | * netif_is_multiqueue - test if device has multiple transmit queues |
| 1733 | * @dev: network device |
| 1734 | * |
| 1735 | * Check if device has multiple transmit queues |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1736 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1737 | static inline int netif_is_multiqueue(const struct net_device *dev) |
| 1738 | { |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 1739 | return dev->num_tx_queues > 1; |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1740 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1741 | |
Tom Herbert | e648493 | 2010-10-18 18:04:39 +0000 | [diff] [blame] | 1742 | extern int netif_set_real_num_tx_queues(struct net_device *dev, |
| 1743 | unsigned int txq); |
John Fastabend | f0796d5 | 2010-07-01 13:21:57 +0000 | [diff] [blame] | 1744 | |
Ben Hutchings | 62fe0b4 | 2010-09-27 08:24:33 +0000 | [diff] [blame] | 1745 | #ifdef CONFIG_RPS |
| 1746 | extern int netif_set_real_num_rx_queues(struct net_device *dev, |
| 1747 | unsigned int rxq); |
| 1748 | #else |
| 1749 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, |
| 1750 | unsigned int rxq) |
| 1751 | { |
| 1752 | return 0; |
| 1753 | } |
| 1754 | #endif |
| 1755 | |
Ben Hutchings | 3171d02 | 2010-09-27 08:24:49 +0000 | [diff] [blame] | 1756 | static inline int netif_copy_real_num_queues(struct net_device *to_dev, |
| 1757 | const struct net_device *from_dev) |
| 1758 | { |
| 1759 | netif_set_real_num_tx_queues(to_dev, from_dev->real_num_tx_queues); |
| 1760 | #ifdef CONFIG_RPS |
| 1761 | return netif_set_real_num_rx_queues(to_dev, |
| 1762 | from_dev->real_num_rx_queues); |
| 1763 | #else |
| 1764 | return 0; |
| 1765 | #endif |
| 1766 | } |
| 1767 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | /* Use this variant when it is known for sure that it |
Matti Linnanvuori | 0ef4730 | 2008-03-28 16:33:00 -0700 | [diff] [blame] | 1769 | * is executing from hardware interrupt context or with hardware interrupts |
| 1770 | * disabled. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1771 | */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1772 | extern void dev_kfree_skb_irq(struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1773 | |
| 1774 | /* Use this variant in places where it could be invoked |
Matti Linnanvuori | 0ef4730 | 2008-03-28 16:33:00 -0700 | [diff] [blame] | 1775 | * from either hardware interrupt or other context, with hardware interrupts |
| 1776 | * either disabled or enabled. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1777 | */ |
Denis Vlasenko | 5607943 | 2006-03-29 15:57:29 -0800 | [diff] [blame] | 1778 | extern void dev_kfree_skb_any(struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1779 | |
| 1780 | #define HAVE_NETIF_RX 1 |
| 1781 | extern int netif_rx(struct sk_buff *skb); |
| 1782 | extern int netif_rx_ni(struct sk_buff *skb); |
| 1783 | #define HAVE_NETIF_RECEIVE_SKB 1 |
| 1784 | extern int netif_receive_skb(struct sk_buff *skb); |
Ben Hutchings | 5b252f0 | 2009-10-29 07:17:09 +0000 | [diff] [blame] | 1785 | extern gro_result_t dev_gro_receive(struct napi_struct *napi, |
Herbert Xu | 96e93ea | 2009-01-06 10:49:34 -0800 | [diff] [blame] | 1786 | struct sk_buff *skb); |
Ben Hutchings | c7c4b3b | 2009-10-29 21:36:53 -0700 | [diff] [blame] | 1787 | extern gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb); |
| 1788 | extern gro_result_t napi_gro_receive(struct napi_struct *napi, |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1789 | struct sk_buff *skb); |
Eric Dumazet | 86cac58 | 2010-08-31 18:25:32 +0000 | [diff] [blame] | 1790 | extern void napi_gro_flush(struct napi_struct *napi); |
Herbert Xu | 76620aa | 2009-04-16 02:02:07 -0700 | [diff] [blame] | 1791 | extern struct sk_buff * napi_get_frags(struct napi_struct *napi); |
Ben Hutchings | c7c4b3b | 2009-10-29 21:36:53 -0700 | [diff] [blame] | 1792 | extern gro_result_t napi_frags_finish(struct napi_struct *napi, |
Ben Hutchings | 5b252f0 | 2009-10-29 07:17:09 +0000 | [diff] [blame] | 1793 | struct sk_buff *skb, |
| 1794 | gro_result_t ret); |
Herbert Xu | 76620aa | 2009-04-16 02:02:07 -0700 | [diff] [blame] | 1795 | extern struct sk_buff * napi_frags_skb(struct napi_struct *napi); |
Ben Hutchings | c7c4b3b | 2009-10-29 21:36:53 -0700 | [diff] [blame] | 1796 | extern gro_result_t napi_gro_frags(struct napi_struct *napi); |
Herbert Xu | 76620aa | 2009-04-16 02:02:07 -0700 | [diff] [blame] | 1797 | |
| 1798 | static inline void napi_free_frags(struct napi_struct *napi) |
| 1799 | { |
| 1800 | kfree_skb(napi->skb); |
| 1801 | napi->skb = NULL; |
| 1802 | } |
| 1803 | |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 1804 | extern int netdev_rx_handler_register(struct net_device *dev, |
Jiri Pirko | 93e2c32 | 2010-06-10 03:34:59 +0000 | [diff] [blame] | 1805 | rx_handler_func_t *rx_handler, |
| 1806 | void *rx_handler_data); |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 1807 | extern void netdev_rx_handler_unregister(struct net_device *dev); |
| 1808 | |
Mitch Williams | c2373ee | 2005-11-09 10:34:45 -0800 | [diff] [blame] | 1809 | extern int dev_valid_name(const char *name); |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 1810 | extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); |
| 1811 | extern int dev_ethtool(struct net *net, struct ifreq *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1812 | extern unsigned dev_get_flags(const struct net_device *); |
Patrick McHardy | bd38081 | 2010-02-26 06:34:53 +0000 | [diff] [blame] | 1813 | extern int __dev_change_flags(struct net_device *, unsigned int flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1814 | extern int dev_change_flags(struct net_device *, unsigned); |
Patrick McHardy | bd38081 | 2010-02-26 06:34:53 +0000 | [diff] [blame] | 1815 | extern void __dev_notify_flags(struct net_device *, unsigned int old_flags); |
Stephen Hemminger | cf04a4c7 | 2008-09-30 02:22:14 -0700 | [diff] [blame] | 1816 | extern int dev_change_name(struct net_device *, const char *); |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 1817 | 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] | 1818 | extern int dev_change_net_namespace(struct net_device *, |
| 1819 | struct net *, const char *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1820 | extern int dev_set_mtu(struct net_device *, int); |
| 1821 | extern int dev_set_mac_address(struct net_device *, |
| 1822 | struct sockaddr *); |
Herbert Xu | f6a78bf | 2006-06-22 02:57:17 -0700 | [diff] [blame] | 1823 | extern int dev_hard_start_xmit(struct sk_buff *skb, |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1824 | struct net_device *dev, |
| 1825 | struct netdev_queue *txq); |
Arnd Bergmann | 4454096 | 2009-11-26 06:07:08 +0000 | [diff] [blame] | 1826 | extern int dev_forward_skb(struct net_device *dev, |
| 1827 | struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 1829 | extern int netdev_budget; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1830 | |
| 1831 | /* Called by rtnetlink.c:rtnl_unlock() */ |
| 1832 | extern void netdev_run_todo(void); |
| 1833 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1834 | /** |
| 1835 | * dev_put - release reference to device |
| 1836 | * @dev: network device |
| 1837 | * |
Benjamin Thery | 9ef4429 | 2007-10-10 21:18:17 -0700 | [diff] [blame] | 1838 | * Release reference to device to allow it to be freed. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1839 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1840 | static inline void dev_put(struct net_device *dev) |
| 1841 | { |
Eric Dumazet | 29b4433 | 2010-10-11 10:22:12 +0000 | [diff] [blame] | 1842 | irqsafe_cpu_dec(*dev->pcpu_refcnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1843 | } |
| 1844 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1845 | /** |
| 1846 | * dev_hold - get reference to device |
| 1847 | * @dev: network device |
| 1848 | * |
Benjamin Thery | 9ef4429 | 2007-10-10 21:18:17 -0700 | [diff] [blame] | 1849 | * Hold reference to device to keep it from being freed. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1850 | */ |
Stephen Hemminger | 1533306 | 2006-03-20 22:32:28 -0800 | [diff] [blame] | 1851 | static inline void dev_hold(struct net_device *dev) |
| 1852 | { |
Eric Dumazet | 29b4433 | 2010-10-11 10:22:12 +0000 | [diff] [blame] | 1853 | irqsafe_cpu_inc(*dev->pcpu_refcnt); |
Stephen Hemminger | 1533306 | 2006-03-20 22:32:28 -0800 | [diff] [blame] | 1854 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | |
| 1856 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on |
| 1857 | * and _off may be called from IRQ context, but it is caller |
| 1858 | * who is responsible for serialization of these calls. |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1859 | * |
| 1860 | * The name carrier is inappropriate, these functions should really be |
| 1861 | * called netif_lowerlayer_*() because they represent the state of any |
| 1862 | * kind of lower layer not just hardware media. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | */ |
| 1864 | |
| 1865 | extern void linkwatch_fire_event(struct net_device *dev); |
Eric Dumazet | e014deb | 2009-11-17 05:59:21 +0000 | [diff] [blame] | 1866 | extern void linkwatch_forget_dev(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1868 | /** |
| 1869 | * netif_carrier_ok - test if carrier present |
| 1870 | * @dev: network device |
| 1871 | * |
| 1872 | * Check if carrier is present on device |
| 1873 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1874 | static inline int netif_carrier_ok(const struct net_device *dev) |
| 1875 | { |
| 1876 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); |
| 1877 | } |
| 1878 | |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 1879 | extern unsigned long dev_trans_start(struct net_device *dev); |
| 1880 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | extern void __netdev_watchdog_up(struct net_device *dev); |
| 1882 | |
Denis Vlasenko | 0a242ef | 2005-08-11 15:32:53 -0700 | [diff] [blame] | 1883 | extern void netif_carrier_on(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | |
Denis Vlasenko | 0a242ef | 2005-08-11 15:32:53 -0700 | [diff] [blame] | 1885 | extern void netif_carrier_off(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1886 | |
Ian Campbell | 06c4648 | 2010-05-26 00:09:42 +0000 | [diff] [blame] | 1887 | extern void netif_notify_peers(struct net_device *dev); |
| 1888 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1889 | /** |
| 1890 | * netif_dormant_on - mark device as dormant. |
| 1891 | * @dev: network device |
| 1892 | * |
| 1893 | * Mark device as dormant (as per RFC2863). |
| 1894 | * |
| 1895 | * The dormant state indicates that the relevant interface is not |
| 1896 | * actually in a condition to pass packets (i.e., it is not 'up') but is |
| 1897 | * in a "pending" state, waiting for some external event. For "on- |
| 1898 | * demand" interfaces, this new state identifies the situation where the |
| 1899 | * interface is waiting for events to place it in the up state. |
| 1900 | * |
| 1901 | */ |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1902 | static inline void netif_dormant_on(struct net_device *dev) |
| 1903 | { |
| 1904 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) |
| 1905 | linkwatch_fire_event(dev); |
| 1906 | } |
| 1907 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1908 | /** |
| 1909 | * netif_dormant_off - set device as not dormant. |
| 1910 | * @dev: network device |
| 1911 | * |
| 1912 | * Device is not in dormant state. |
| 1913 | */ |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1914 | static inline void netif_dormant_off(struct net_device *dev) |
| 1915 | { |
| 1916 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) |
| 1917 | linkwatch_fire_event(dev); |
| 1918 | } |
| 1919 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1920 | /** |
| 1921 | * netif_dormant - test if carrier present |
| 1922 | * @dev: network device |
| 1923 | * |
| 1924 | * Check if carrier is present on device |
| 1925 | */ |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1926 | static inline int netif_dormant(const struct net_device *dev) |
| 1927 | { |
| 1928 | return test_bit(__LINK_STATE_DORMANT, &dev->state); |
| 1929 | } |
| 1930 | |
| 1931 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1932 | /** |
| 1933 | * netif_oper_up - test if device is operational |
| 1934 | * @dev: network device |
| 1935 | * |
| 1936 | * Check if carrier is operational |
| 1937 | */ |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 1938 | static inline int netif_oper_up(const struct net_device *dev) |
| 1939 | { |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1940 | return (dev->operstate == IF_OPER_UP || |
| 1941 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); |
| 1942 | } |
| 1943 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1944 | /** |
| 1945 | * netif_device_present - is device available or removed |
| 1946 | * @dev: network device |
| 1947 | * |
| 1948 | * Check if device has not been removed from system. |
| 1949 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | static inline int netif_device_present(struct net_device *dev) |
| 1951 | { |
| 1952 | return test_bit(__LINK_STATE_PRESENT, &dev->state); |
| 1953 | } |
| 1954 | |
Denis Vlasenko | 5607943 | 2006-03-29 15:57:29 -0800 | [diff] [blame] | 1955 | extern void netif_device_detach(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1956 | |
Denis Vlasenko | 5607943 | 2006-03-29 15:57:29 -0800 | [diff] [blame] | 1957 | extern void netif_device_attach(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1958 | |
| 1959 | /* |
| 1960 | * Network interface message level settings |
| 1961 | */ |
| 1962 | #define HAVE_NETIF_MSG 1 |
| 1963 | |
| 1964 | enum { |
| 1965 | NETIF_MSG_DRV = 0x0001, |
| 1966 | NETIF_MSG_PROBE = 0x0002, |
| 1967 | NETIF_MSG_LINK = 0x0004, |
| 1968 | NETIF_MSG_TIMER = 0x0008, |
| 1969 | NETIF_MSG_IFDOWN = 0x0010, |
| 1970 | NETIF_MSG_IFUP = 0x0020, |
| 1971 | NETIF_MSG_RX_ERR = 0x0040, |
| 1972 | NETIF_MSG_TX_ERR = 0x0080, |
| 1973 | NETIF_MSG_TX_QUEUED = 0x0100, |
| 1974 | NETIF_MSG_INTR = 0x0200, |
| 1975 | NETIF_MSG_TX_DONE = 0x0400, |
| 1976 | NETIF_MSG_RX_STATUS = 0x0800, |
| 1977 | NETIF_MSG_PKTDATA = 0x1000, |
| 1978 | NETIF_MSG_HW = 0x2000, |
| 1979 | NETIF_MSG_WOL = 0x4000, |
| 1980 | }; |
| 1981 | |
| 1982 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) |
| 1983 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) |
| 1984 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) |
| 1985 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) |
| 1986 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) |
| 1987 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) |
| 1988 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) |
| 1989 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) |
| 1990 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) |
| 1991 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) |
| 1992 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) |
| 1993 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) |
| 1994 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) |
| 1995 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) |
| 1996 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) |
| 1997 | |
| 1998 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) |
| 1999 | { |
| 2000 | /* use default */ |
| 2001 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) |
| 2002 | return default_msg_enable_bits; |
| 2003 | if (debug_value == 0) /* no output */ |
| 2004 | return 0; |
| 2005 | /* set low N bits */ |
| 2006 | return (1 << debug_value) - 1; |
| 2007 | } |
| 2008 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2009 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 2010 | { |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2011 | spin_lock(&txq->_xmit_lock); |
| 2012 | txq->xmit_lock_owner = cpu; |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 2013 | } |
| 2014 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2015 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
| 2016 | { |
| 2017 | spin_lock_bh(&txq->_xmit_lock); |
| 2018 | txq->xmit_lock_owner = smp_processor_id(); |
| 2019 | } |
| 2020 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2021 | static inline int __netif_tx_trylock(struct netdev_queue *txq) |
| 2022 | { |
| 2023 | int ok = spin_trylock(&txq->_xmit_lock); |
| 2024 | if (likely(ok)) |
| 2025 | txq->xmit_lock_owner = smp_processor_id(); |
| 2026 | return ok; |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 2027 | } |
| 2028 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2029 | static inline void __netif_tx_unlock(struct netdev_queue *txq) |
| 2030 | { |
| 2031 | txq->xmit_lock_owner = -1; |
| 2032 | spin_unlock(&txq->_xmit_lock); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 2033 | } |
| 2034 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2035 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) |
| 2036 | { |
| 2037 | txq->xmit_lock_owner = -1; |
| 2038 | spin_unlock_bh(&txq->_xmit_lock); |
| 2039 | } |
| 2040 | |
Eric Dumazet | 08baf56 | 2009-05-25 22:58:01 -0700 | [diff] [blame] | 2041 | static inline void txq_trans_update(struct netdev_queue *txq) |
| 2042 | { |
| 2043 | if (txq->xmit_lock_owner != -1) |
| 2044 | txq->trans_start = jiffies; |
| 2045 | } |
| 2046 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2047 | /** |
| 2048 | * netif_tx_lock - grab network device transmit lock |
| 2049 | * @dev: network device |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2050 | * |
| 2051 | * Get network device transmit lock |
| 2052 | */ |
| 2053 | static inline void netif_tx_lock(struct net_device *dev) |
| 2054 | { |
| 2055 | unsigned int i; |
| 2056 | int cpu; |
| 2057 | |
| 2058 | spin_lock(&dev->tx_global_lock); |
| 2059 | cpu = smp_processor_id(); |
| 2060 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 2061 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 2062 | |
| 2063 | /* We are the only thread of execution doing a |
| 2064 | * freeze, but we have to grab the _xmit_lock in |
| 2065 | * order to synchronize with threads which are in |
| 2066 | * the ->hard_start_xmit() handler and already |
| 2067 | * checked the frozen bit. |
| 2068 | */ |
| 2069 | __netif_tx_lock(txq, cpu); |
| 2070 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
| 2071 | __netif_tx_unlock(txq); |
| 2072 | } |
| 2073 | } |
| 2074 | |
| 2075 | static inline void netif_tx_lock_bh(struct net_device *dev) |
| 2076 | { |
| 2077 | local_bh_disable(); |
| 2078 | netif_tx_lock(dev); |
| 2079 | } |
| 2080 | |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 2081 | static inline void netif_tx_unlock(struct net_device *dev) |
| 2082 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2083 | unsigned int i; |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2084 | |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2085 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 2086 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2087 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2088 | /* No need to grab the _xmit_lock here. If the |
| 2089 | * queue is not stopped for another reason, we |
| 2090 | * force a schedule. |
| 2091 | */ |
| 2092 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 2093 | netif_schedule_queue(txq); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2094 | } |
| 2095 | spin_unlock(&dev->tx_global_lock); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 2096 | } |
| 2097 | |
| 2098 | static inline void netif_tx_unlock_bh(struct net_device *dev) |
| 2099 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2100 | netif_tx_unlock(dev); |
| 2101 | local_bh_enable(); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 2102 | } |
| 2103 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2104 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 2105 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2106 | __netif_tx_lock(txq, cpu); \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 2107 | } \ |
| 2108 | } |
| 2109 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2110 | #define HARD_TX_UNLOCK(dev, txq) { \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 2111 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 2112 | __netif_tx_unlock(txq); \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 2113 | } \ |
| 2114 | } |
| 2115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2116 | static inline void netif_tx_disable(struct net_device *dev) |
| 2117 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2118 | unsigned int i; |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2119 | int cpu; |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2120 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2121 | local_bh_disable(); |
| 2122 | cpu = smp_processor_id(); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2123 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 2124 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2125 | |
| 2126 | __netif_tx_lock(txq, cpu); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2127 | netif_tx_stop_queue(txq); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2128 | __netif_tx_unlock(txq); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2129 | } |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2130 | local_bh_enable(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | } |
| 2132 | |
David S. Miller | e308a5d | 2008-07-15 00:13:44 -0700 | [diff] [blame] | 2133 | static inline void netif_addr_lock(struct net_device *dev) |
| 2134 | { |
| 2135 | spin_lock(&dev->addr_list_lock); |
| 2136 | } |
| 2137 | |
| 2138 | static inline void netif_addr_lock_bh(struct net_device *dev) |
| 2139 | { |
| 2140 | spin_lock_bh(&dev->addr_list_lock); |
| 2141 | } |
| 2142 | |
| 2143 | static inline void netif_addr_unlock(struct net_device *dev) |
| 2144 | { |
| 2145 | spin_unlock(&dev->addr_list_lock); |
| 2146 | } |
| 2147 | |
| 2148 | static inline void netif_addr_unlock_bh(struct net_device *dev) |
| 2149 | { |
| 2150 | spin_unlock_bh(&dev->addr_list_lock); |
| 2151 | } |
| 2152 | |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2153 | /* |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 2154 | * dev_addrs walker. Should be used only for read access. Call with |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2155 | * rcu_read_lock held. |
| 2156 | */ |
| 2157 | #define for_each_dev_addr(dev, ha) \ |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 2158 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2160 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
| 2161 | |
| 2162 | extern void ether_setup(struct net_device *dev); |
| 2163 | |
| 2164 | /* Support for loadable net-drivers */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2165 | extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, |
| 2166 | void (*setup)(struct net_device *), |
| 2167 | unsigned int queue_count); |
| 2168 | #define alloc_netdev(sizeof_priv, name, setup) \ |
| 2169 | alloc_netdev_mq(sizeof_priv, name, setup, 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2170 | extern int register_netdev(struct net_device *dev); |
| 2171 | extern void unregister_netdev(struct net_device *dev); |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2172 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 2173 | /* General hardware address lists handling functions */ |
| 2174 | extern int __hw_addr_add_multiple(struct netdev_hw_addr_list *to_list, |
| 2175 | struct netdev_hw_addr_list *from_list, |
| 2176 | int addr_len, unsigned char addr_type); |
| 2177 | extern void __hw_addr_del_multiple(struct netdev_hw_addr_list *to_list, |
| 2178 | struct netdev_hw_addr_list *from_list, |
| 2179 | int addr_len, unsigned char addr_type); |
| 2180 | extern int __hw_addr_sync(struct netdev_hw_addr_list *to_list, |
| 2181 | struct netdev_hw_addr_list *from_list, |
| 2182 | int addr_len); |
| 2183 | extern void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, |
| 2184 | struct netdev_hw_addr_list *from_list, |
| 2185 | int addr_len); |
| 2186 | extern void __hw_addr_flush(struct netdev_hw_addr_list *list); |
| 2187 | extern void __hw_addr_init(struct netdev_hw_addr_list *list); |
| 2188 | |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2189 | /* Functions used for device addresses handling */ |
| 2190 | extern int dev_addr_add(struct net_device *dev, unsigned char *addr, |
| 2191 | unsigned char addr_type); |
| 2192 | extern int dev_addr_del(struct net_device *dev, unsigned char *addr, |
| 2193 | unsigned char addr_type); |
| 2194 | extern int dev_addr_add_multiple(struct net_device *to_dev, |
| 2195 | struct net_device *from_dev, |
| 2196 | unsigned char addr_type); |
| 2197 | extern int dev_addr_del_multiple(struct net_device *to_dev, |
| 2198 | struct net_device *from_dev, |
| 2199 | unsigned char addr_type); |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 2200 | extern void dev_addr_flush(struct net_device *dev); |
| 2201 | extern int dev_addr_init(struct net_device *dev); |
| 2202 | |
| 2203 | /* Functions used for unicast addresses handling */ |
| 2204 | extern int dev_uc_add(struct net_device *dev, unsigned char *addr); |
| 2205 | extern int dev_uc_del(struct net_device *dev, unsigned char *addr); |
| 2206 | extern int dev_uc_sync(struct net_device *to, struct net_device *from); |
| 2207 | extern void dev_uc_unsync(struct net_device *to, struct net_device *from); |
| 2208 | extern void dev_uc_flush(struct net_device *dev); |
| 2209 | extern void dev_uc_init(struct net_device *dev); |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 2210 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 2211 | /* Functions used for multicast addresses handling */ |
| 2212 | extern int dev_mc_add(struct net_device *dev, unsigned char *addr); |
| 2213 | extern int dev_mc_add_global(struct net_device *dev, unsigned char *addr); |
| 2214 | extern int dev_mc_del(struct net_device *dev, unsigned char *addr); |
| 2215 | extern int dev_mc_del_global(struct net_device *dev, unsigned char *addr); |
| 2216 | extern int dev_mc_sync(struct net_device *to, struct net_device *from); |
| 2217 | extern void dev_mc_unsync(struct net_device *to, struct net_device *from); |
| 2218 | extern void dev_mc_flush(struct net_device *dev); |
| 2219 | extern void dev_mc_init(struct net_device *dev); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 2220 | |
| 2221 | /* Functions used for secondary unicast and multicast support */ |
| 2222 | extern void dev_set_rx_mode(struct net_device *dev); |
| 2223 | extern void __dev_set_rx_mode(struct net_device *dev); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 2224 | extern int dev_set_promiscuity(struct net_device *dev, int inc); |
| 2225 | extern int dev_set_allmulti(struct net_device *dev, int inc); |
| 2226 | extern void netdev_state_change(struct net_device *dev); |
Jiri Pirko | 3ca5b40 | 2010-03-10 10:29:35 +0000 | [diff] [blame] | 2227 | extern int netdev_bonding_change(struct net_device *dev, |
Moni Shoua | 75c7850 | 2009-09-15 02:37:40 -0700 | [diff] [blame] | 2228 | unsigned long event); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 2229 | extern void netdev_features_change(struct net_device *dev); |
| 2230 | /* Load a device via the kmod */ |
| 2231 | extern void dev_load(struct net *net, const char *name); |
| 2232 | extern void dev_mcast_init(void); |
Ben Hutchings | d775351 | 2010-07-09 09:12:41 +0000 | [diff] [blame] | 2233 | extern struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, |
| 2234 | struct rtnl_link_stats64 *storage); |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 2235 | extern void dev_txq_stats_fold(const struct net_device *dev, |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 2236 | struct rtnl_link_stats64 *stats); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 2237 | |
| 2238 | extern int netdev_max_backlog; |
Eric Dumazet | 3b098e2 | 2010-05-15 23:57:10 -0700 | [diff] [blame] | 2239 | extern int netdev_tstamp_prequeue; |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 2240 | extern int weight_p; |
| 2241 | extern int netdev_set_master(struct net_device *dev, struct net_device *master); |
| 2242 | extern int skb_checksum_help(struct sk_buff *skb); |
| 2243 | extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); |
| 2244 | #ifdef CONFIG_BUG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2245 | extern void netdev_rx_csum_fault(struct net_device *dev); |
| 2246 | #else |
| 2247 | static inline void netdev_rx_csum_fault(struct net_device *dev) |
| 2248 | { |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 2249 | } |
| 2250 | #endif |
| 2251 | /* rx skb timestamps */ |
| 2252 | extern void net_enable_timestamp(void); |
| 2253 | extern void net_disable_timestamp(void); |
| 2254 | |
| 2255 | #ifdef CONFIG_PROC_FS |
| 2256 | extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 2257 | extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); |
| 2258 | extern void dev_seq_stop(struct seq_file *seq, void *v); |
| 2259 | #endif |
| 2260 | |
Jay Vosburgh | b8a9787 | 2008-06-13 18:12:04 -0700 | [diff] [blame] | 2261 | extern int netdev_class_create_file(struct class_attribute *class_attr); |
| 2262 | extern void netdev_class_remove_file(struct class_attribute *class_attr); |
| 2263 | |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 2264 | extern struct kobj_ns_type_operations net_ns_type_operations; |
| 2265 | |
Stephen Hemminger | cf04a4c7 | 2008-09-30 02:22:14 -0700 | [diff] [blame] | 2266 | 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] | 2267 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2268 | extern void linkwatch_run_queue(void); |
| 2269 | |
Herbert Xu | b63365a | 2008-10-23 01:11:29 -0700 | [diff] [blame] | 2270 | unsigned long netdev_increment_features(unsigned long all, unsigned long one, |
| 2271 | unsigned long mask); |
| 2272 | unsigned long netdev_fix_features(unsigned long features, const char *name); |
Herbert Xu | 7f353bf | 2007-08-10 15:47:58 -0700 | [diff] [blame] | 2273 | |
Patrick Mullaney | fc4a748 | 2009-12-03 15:59:22 -0800 | [diff] [blame] | 2274 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
| 2275 | struct net_device *dev); |
| 2276 | |
Jesse Gross | 58e998c | 2010-10-29 12:14:55 +0000 | [diff] [blame] | 2277 | int netif_get_vlan_features(struct sk_buff *skb, struct net_device *dev); |
| 2278 | |
Herbert Xu | bcd7611 | 2006-06-30 13:36:35 -0700 | [diff] [blame] | 2279 | static inline int net_gso_ok(int features, int gso_type) |
| 2280 | { |
| 2281 | int feature = gso_type << NETIF_F_GSO_SHIFT; |
| 2282 | return (features & feature) == feature; |
| 2283 | } |
| 2284 | |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 2285 | static inline int skb_gso_ok(struct sk_buff *skb, int features) |
| 2286 | { |
Herbert Xu | 278b251 | 2009-06-03 21:20:51 -0700 | [diff] [blame] | 2287 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
David S. Miller | 21dc330 | 2010-08-23 00:13:46 -0700 | [diff] [blame] | 2288 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 2289 | } |
| 2290 | |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 2291 | static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) |
| 2292 | { |
Jesse Gross | 7b9c609 | 2010-10-20 13:56:04 +0000 | [diff] [blame] | 2293 | if (skb_is_gso(skb)) { |
Jesse Gross | 58e998c | 2010-10-29 12:14:55 +0000 | [diff] [blame] | 2294 | int features = netif_get_vlan_features(skb, dev); |
Jesse Gross | 7b9c609 | 2010-10-20 13:56:04 +0000 | [diff] [blame] | 2295 | |
| 2296 | return (!skb_gso_ok(skb, features) || |
| 2297 | unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); |
| 2298 | } |
| 2299 | |
| 2300 | return 0; |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 2301 | } |
| 2302 | |
Peter P Waskiewicz Jr | 82cc1a7 | 2008-03-21 03:43:19 -0700 | [diff] [blame] | 2303 | static inline void netif_set_gso_max_size(struct net_device *dev, |
| 2304 | unsigned int size) |
| 2305 | { |
| 2306 | dev->gso_max_size = size; |
| 2307 | } |
| 2308 | |
Eric Dumazet | acbbc07 | 2010-04-11 06:56:11 +0000 | [diff] [blame] | 2309 | extern int __skb_bond_should_drop(struct sk_buff *skb, |
| 2310 | struct net_device *master); |
Jiri Pirko | 5d4e039 | 2009-05-28 01:05:00 +0000 | [diff] [blame] | 2311 | |
Eric Dumazet | 0641e4f | 2010-03-18 21:16:45 -0700 | [diff] [blame] | 2312 | static inline int skb_bond_should_drop(struct sk_buff *skb, |
| 2313 | struct net_device *master) |
David S. Miller | 7ea49ed | 2006-08-14 17:08:36 -0700 | [diff] [blame] | 2314 | { |
Eric Dumazet | acbbc07 | 2010-04-11 06:56:11 +0000 | [diff] [blame] | 2315 | if (master) |
| 2316 | return __skb_bond_should_drop(skb, master); |
David S. Miller | 7ea49ed | 2006-08-14 17:08:36 -0700 | [diff] [blame] | 2317 | return 0; |
| 2318 | } |
| 2319 | |
Eric W. Biederman | 505d4f7 | 2008-11-07 22:54:20 -0800 | [diff] [blame] | 2320 | extern struct pernet_operations __net_initdata loopback_net_ops; |
Patrick McHardy | b1b67dd | 2009-04-20 04:49:28 +0000 | [diff] [blame] | 2321 | |
| 2322 | static inline int dev_ethtool_get_settings(struct net_device *dev, |
| 2323 | struct ethtool_cmd *cmd) |
| 2324 | { |
| 2325 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings) |
| 2326 | return -EOPNOTSUPP; |
| 2327 | return dev->ethtool_ops->get_settings(dev, cmd); |
| 2328 | } |
| 2329 | |
| 2330 | static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev) |
| 2331 | { |
| 2332 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum) |
| 2333 | return 0; |
| 2334 | return dev->ethtool_ops->get_rx_csum(dev); |
| 2335 | } |
| 2336 | |
| 2337 | static inline u32 dev_ethtool_get_flags(struct net_device *dev) |
| 2338 | { |
| 2339 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_flags) |
| 2340 | return 0; |
| 2341 | return dev->ethtool_ops->get_flags(dev); |
| 2342 | } |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 2343 | |
| 2344 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ |
| 2345 | |
| 2346 | /* netdev_printk helpers, similar to dev_printk */ |
| 2347 | |
| 2348 | static inline const char *netdev_name(const struct net_device *dev) |
| 2349 | { |
| 2350 | if (dev->reg_state != NETREG_REGISTERED) |
| 2351 | return "(unregistered net_device)"; |
| 2352 | return dev->name; |
| 2353 | } |
| 2354 | |
Joe Perches | 256df2f | 2010-06-27 01:02:35 +0000 | [diff] [blame] | 2355 | extern int netdev_printk(const char *level, const struct net_device *dev, |
| 2356 | const char *format, ...) |
| 2357 | __attribute__ ((format (printf, 3, 4))); |
| 2358 | extern int netdev_emerg(const struct net_device *dev, const char *format, ...) |
| 2359 | __attribute__ ((format (printf, 2, 3))); |
| 2360 | extern int netdev_alert(const struct net_device *dev, const char *format, ...) |
| 2361 | __attribute__ ((format (printf, 2, 3))); |
| 2362 | extern int netdev_crit(const struct net_device *dev, const char *format, ...) |
| 2363 | __attribute__ ((format (printf, 2, 3))); |
| 2364 | extern int netdev_err(const struct net_device *dev, const char *format, ...) |
| 2365 | __attribute__ ((format (printf, 2, 3))); |
| 2366 | extern int netdev_warn(const struct net_device *dev, const char *format, ...) |
| 2367 | __attribute__ ((format (printf, 2, 3))); |
| 2368 | extern int netdev_notice(const struct net_device *dev, const char *format, ...) |
| 2369 | __attribute__ ((format (printf, 2, 3))); |
| 2370 | extern int netdev_info(const struct net_device *dev, const char *format, ...) |
| 2371 | __attribute__ ((format (printf, 2, 3))); |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 2372 | |
| 2373 | #if defined(DEBUG) |
| 2374 | #define netdev_dbg(__dev, format, args...) \ |
| 2375 | netdev_printk(KERN_DEBUG, __dev, format, ##args) |
| 2376 | #elif defined(CONFIG_DYNAMIC_DEBUG) |
| 2377 | #define netdev_dbg(__dev, format, args...) \ |
| 2378 | do { \ |
| 2379 | dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \ |
| 2380 | netdev_name(__dev), ##args); \ |
| 2381 | } while (0) |
| 2382 | #else |
| 2383 | #define netdev_dbg(__dev, format, args...) \ |
| 2384 | ({ \ |
| 2385 | if (0) \ |
| 2386 | netdev_printk(KERN_DEBUG, __dev, format, ##args); \ |
| 2387 | 0; \ |
| 2388 | }) |
| 2389 | #endif |
| 2390 | |
| 2391 | #if defined(VERBOSE_DEBUG) |
| 2392 | #define netdev_vdbg netdev_dbg |
| 2393 | #else |
| 2394 | |
| 2395 | #define netdev_vdbg(dev, format, args...) \ |
| 2396 | ({ \ |
| 2397 | if (0) \ |
| 2398 | netdev_printk(KERN_DEBUG, dev, format, ##args); \ |
| 2399 | 0; \ |
| 2400 | }) |
| 2401 | #endif |
| 2402 | |
| 2403 | /* |
| 2404 | * netdev_WARN() acts like dev_printk(), but with the key difference |
| 2405 | * of using a WARN/WARN_ON to get the message out, including the |
| 2406 | * file/line information and a backtrace. |
| 2407 | */ |
| 2408 | #define netdev_WARN(dev, format, args...) \ |
| 2409 | WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args); |
| 2410 | |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 2411 | /* netif printk helpers, similar to netdev_printk */ |
| 2412 | |
| 2413 | #define netif_printk(priv, type, level, dev, fmt, args...) \ |
| 2414 | do { \ |
| 2415 | if (netif_msg_##type(priv)) \ |
| 2416 | netdev_printk(level, (dev), fmt, ##args); \ |
| 2417 | } while (0) |
| 2418 | |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 2419 | #define netif_level(level, priv, type, dev, fmt, args...) \ |
| 2420 | do { \ |
| 2421 | if (netif_msg_##type(priv)) \ |
| 2422 | netdev_##level(dev, fmt, ##args); \ |
| 2423 | } while (0) |
| 2424 | |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 2425 | #define netif_emerg(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 2426 | netif_level(emerg, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 2427 | #define netif_alert(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 2428 | netif_level(alert, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 2429 | #define netif_crit(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 2430 | netif_level(crit, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 2431 | #define netif_err(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 2432 | netif_level(err, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 2433 | #define netif_warn(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 2434 | netif_level(warn, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 2435 | #define netif_notice(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 2436 | netif_level(notice, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 2437 | #define netif_info(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 2438 | netif_level(info, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 2439 | |
| 2440 | #if defined(DEBUG) |
| 2441 | #define netif_dbg(priv, type, dev, format, args...) \ |
| 2442 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args) |
| 2443 | #elif defined(CONFIG_DYNAMIC_DEBUG) |
| 2444 | #define netif_dbg(priv, type, netdev, format, args...) \ |
| 2445 | do { \ |
| 2446 | if (netif_msg_##type(priv)) \ |
| 2447 | dynamic_dev_dbg((netdev)->dev.parent, \ |
| 2448 | "%s: " format, \ |
| 2449 | netdev_name(netdev), ##args); \ |
| 2450 | } while (0) |
| 2451 | #else |
| 2452 | #define netif_dbg(priv, type, dev, format, args...) \ |
| 2453 | ({ \ |
| 2454 | if (0) \ |
| 2455 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
| 2456 | 0; \ |
| 2457 | }) |
| 2458 | #endif |
| 2459 | |
| 2460 | #if defined(VERBOSE_DEBUG) |
Ben Hutchings | bcfcc45 | 2010-07-02 07:08:44 +0000 | [diff] [blame] | 2461 | #define netif_vdbg netif_dbg |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 2462 | #else |
| 2463 | #define netif_vdbg(priv, type, dev, format, args...) \ |
| 2464 | ({ \ |
| 2465 | if (0) \ |
Ben Hutchings | a4ed89c | 2010-05-18 06:56:32 +0000 | [diff] [blame] | 2466 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 2467 | 0; \ |
| 2468 | }) |
| 2469 | #endif |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 2470 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2471 | #endif /* __KERNEL__ */ |
| 2472 | |
Jiri Pirko | 385a154 | 2009-05-27 15:48:07 -0700 | [diff] [blame] | 2473 | #endif /* _LINUX_NETDEVICE_H */ |