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1da177e4 LT |
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 | * | |
02c30a84 | 10 | * Authors: Ross Biro |
1da177e4 LT |
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> | |
113aa838 | 14 | * Alan Cox, <alan@lxorguk.ukuu.org.uk> |
1da177e4 LT |
15 | * Bjorn Ekwall. <bj0rn@blox.se> |
16 | * Pekka Riikonen <priikone@poseidon.pspt.fi> | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or | |
19 | * modify it under the terms of the GNU General Public License | |
20 | * as published by the Free Software Foundation; either version | |
21 | * 2 of the License, or (at your option) any later version. | |
22 | * | |
23 | * Moved to /usr/include/linux for NET3 | |
24 | */ | |
25 | #ifndef _LINUX_NETDEVICE_H | |
26 | #define _LINUX_NETDEVICE_H | |
27 | ||
28 | #include <linux/if.h> | |
29 | #include <linux/if_ether.h> | |
30 | #include <linux/if_packet.h> | |
31 | ||
32 | #ifdef __KERNEL__ | |
d7fe0f24 | 33 | #include <linux/timer.h> |
bea3348e | 34 | #include <linux/delay.h> |
cc0be322 | 35 | #include <linux/mm.h> |
1da177e4 LT |
36 | #include <asm/atomic.h> |
37 | #include <asm/cache.h> | |
38 | #include <asm/byteorder.h> | |
39 | ||
1da177e4 LT |
40 | #include <linux/device.h> |
41 | #include <linux/percpu.h> | |
4d5b78c0 | 42 | #include <linux/rculist.h> |
db217334 | 43 | #include <linux/dmaengine.h> |
bea3348e | 44 | #include <linux/workqueue.h> |
1da177e4 | 45 | |
b1b67dd4 | 46 | #include <linux/ethtool.h> |
a050c33f | 47 | #include <net/net_namespace.h> |
cf85d08f | 48 | #include <net/dsa.h> |
7a6b6f51 | 49 | #ifdef CONFIG_DCB |
2f90b865 AD |
50 | #include <net/dcbnl.h> |
51 | #endif | |
a050c33f | 52 | |
1da177e4 | 53 | struct vlan_group; |
115c1d6e | 54 | struct netpoll_info; |
704232c2 JB |
55 | /* 802.11 specific */ |
56 | struct wireless_dev; | |
1da177e4 LT |
57 | /* source back-compat hooks */ |
58 | #define SET_ETHTOOL_OPS(netdev,ops) \ | |
59 | ( (netdev)->ethtool_ops = (ops) ) | |
60 | ||
61 | #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev | |
62 | functions are available. */ | |
63 | #define HAVE_FREE_NETDEV /* free_netdev() */ | |
64 | #define HAVE_NETDEV_PRIV /* netdev_priv() */ | |
65 | ||
66 | #define NET_XMIT_SUCCESS 0 | |
67 | #define NET_XMIT_DROP 1 /* skb dropped */ | |
68 | #define NET_XMIT_CN 2 /* congestion notification */ | |
69 | #define NET_XMIT_POLICED 3 /* skb is shot by police */ | |
378a2f09 | 70 | #define NET_XMIT_MASK 0xFFFF /* qdisc flags in net/sch_generic.h */ |
1da177e4 LT |
71 | |
72 | /* Backlog congestion levels */ | |
73 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
74 | #define NET_RX_DROP 1 /* packet dropped */ | |
1da177e4 | 75 | |
b9df3cb8 GR |
76 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
77 | * indicates that the device will soon be dropping packets, or already drops | |
78 | * some packets of the same priority; prompting us to send less aggressively. */ | |
79 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e)) | |
1da177e4 LT |
80 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
81 | ||
dc1f8bf6 SH |
82 | /* Driver transmit return codes */ |
83 | enum netdev_tx { | |
84 | NETDEV_TX_OK = 0, /* driver took care of packet */ | |
85 | NETDEV_TX_BUSY, /* driver tx path was busy*/ | |
86 | NETDEV_TX_LOCKED = -1, /* driver tx lock was already taken */ | |
87 | }; | |
88 | typedef enum netdev_tx netdev_tx_t; | |
89 | ||
1da177e4 LT |
90 | #endif |
91 | ||
92 | #define MAX_ADDR_LEN 32 /* Largest hardware address length */ | |
93 | ||
c88e6f51 | 94 | #ifdef __KERNEL__ |
1da177e4 LT |
95 | /* |
96 | * Compute the worst case header length according to the protocols | |
97 | * used. | |
98 | */ | |
fe2918b0 | 99 | |
8388e3da DM |
100 | #if defined(CONFIG_WLAN_80211) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) |
101 | # if defined(CONFIG_MAC80211_MESH) | |
102 | # define LL_MAX_HEADER 128 | |
103 | # else | |
104 | # define LL_MAX_HEADER 96 | |
105 | # endif | |
c759a6b4 | 106 | #elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE) |
8388e3da | 107 | # define LL_MAX_HEADER 48 |
1da177e4 | 108 | #else |
8388e3da | 109 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
110 | #endif |
111 | ||
e81c7359 DM |
112 | #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \ |
113 | !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ | |
114 | !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ | |
115 | !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) | |
1da177e4 LT |
116 | #define MAX_HEADER LL_MAX_HEADER |
117 | #else | |
118 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
119 | #endif | |
120 | ||
c88e6f51 AB |
121 | #endif /* __KERNEL__ */ |
122 | ||
1da177e4 LT |
123 | /* |
124 | * Network device statistics. Akin to the 2.0 ether stats but | |
125 | * with byte counters. | |
126 | */ | |
fe2918b0 | 127 | |
d94d9fee | 128 | struct net_device_stats { |
1da177e4 LT |
129 | unsigned long rx_packets; /* total packets received */ |
130 | unsigned long tx_packets; /* total packets transmitted */ | |
131 | unsigned long rx_bytes; /* total bytes received */ | |
132 | unsigned long tx_bytes; /* total bytes transmitted */ | |
133 | unsigned long rx_errors; /* bad packets received */ | |
134 | unsigned long tx_errors; /* packet transmit problems */ | |
135 | unsigned long rx_dropped; /* no space in linux buffers */ | |
136 | unsigned long tx_dropped; /* no space available in linux */ | |
137 | unsigned long multicast; /* multicast packets received */ | |
138 | unsigned long collisions; | |
139 | ||
140 | /* detailed rx_errors: */ | |
141 | unsigned long rx_length_errors; | |
142 | unsigned long rx_over_errors; /* receiver ring buff overflow */ | |
143 | unsigned long rx_crc_errors; /* recved pkt with crc error */ | |
144 | unsigned long rx_frame_errors; /* recv'd frame alignment error */ | |
145 | unsigned long rx_fifo_errors; /* recv'r fifo overrun */ | |
146 | unsigned long rx_missed_errors; /* receiver missed packet */ | |
147 | ||
148 | /* detailed tx_errors */ | |
149 | unsigned long tx_aborted_errors; | |
150 | unsigned long tx_carrier_errors; | |
151 | unsigned long tx_fifo_errors; | |
152 | unsigned long tx_heartbeat_errors; | |
153 | unsigned long tx_window_errors; | |
154 | ||
155 | /* for cslip etc */ | |
156 | unsigned long rx_compressed; | |
157 | unsigned long tx_compressed; | |
158 | }; | |
159 | ||
160 | ||
161 | /* Media selection options. */ | |
162 | enum { | |
163 | IF_PORT_UNKNOWN = 0, | |
164 | IF_PORT_10BASE2, | |
165 | IF_PORT_10BASET, | |
166 | IF_PORT_AUI, | |
167 | IF_PORT_100BASET, | |
168 | IF_PORT_100BASETX, | |
169 | IF_PORT_100BASEFX | |
170 | }; | |
171 | ||
172 | #ifdef __KERNEL__ | |
173 | ||
174 | #include <linux/cache.h> | |
175 | #include <linux/skbuff.h> | |
176 | ||
177 | struct neighbour; | |
178 | struct neigh_parms; | |
179 | struct sk_buff; | |
180 | ||
d94d9fee | 181 | struct netif_rx_stats { |
1da177e4 LT |
182 | unsigned total; |
183 | unsigned dropped; | |
184 | unsigned time_squeeze; | |
1da177e4 LT |
185 | unsigned cpu_collision; |
186 | }; | |
187 | ||
188 | DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat); | |
189 | ||
d94d9fee | 190 | struct dev_addr_list { |
bf742482 PM |
191 | struct dev_addr_list *next; |
192 | u8 da_addr[MAX_ADDR_LEN]; | |
193 | u8 da_addrlen; | |
a0a400d7 | 194 | u8 da_synced; |
bf742482 PM |
195 | int da_users; |
196 | int da_gusers; | |
197 | }; | |
1da177e4 LT |
198 | |
199 | /* | |
200 | * We tag multicasts with these structures. | |
201 | */ | |
3fba5a8b PM |
202 | |
203 | #define dev_mc_list dev_addr_list | |
204 | #define dmi_addr da_addr | |
205 | #define dmi_addrlen da_addrlen | |
206 | #define dmi_users da_users | |
207 | #define dmi_gusers da_gusers | |
1da177e4 | 208 | |
f001fde5 JP |
209 | struct netdev_hw_addr { |
210 | struct list_head list; | |
211 | unsigned char addr[MAX_ADDR_LEN]; | |
212 | unsigned char type; | |
ccffad25 JP |
213 | #define NETDEV_HW_ADDR_T_LAN 1 |
214 | #define NETDEV_HW_ADDR_T_SAN 2 | |
215 | #define NETDEV_HW_ADDR_T_SLAVE 3 | |
216 | #define NETDEV_HW_ADDR_T_UNICAST 4 | |
217 | int refcount; | |
218 | bool synced; | |
f001fde5 JP |
219 | struct rcu_head rcu_head; |
220 | }; | |
221 | ||
31278e71 JP |
222 | struct netdev_hw_addr_list { |
223 | struct list_head list; | |
224 | int count; | |
225 | }; | |
226 | ||
d94d9fee | 227 | struct hh_cache { |
1da177e4 LT |
228 | struct hh_cache *hh_next; /* Next entry */ |
229 | atomic_t hh_refcnt; /* number of users */ | |
f0490980 ED |
230 | /* |
231 | * We want hh_output, hh_len, hh_lock and hh_data be a in a separate | |
232 | * cache line on SMP. | |
233 | * They are mostly read, but hh_refcnt may be changed quite frequently, | |
234 | * incurring cache line ping pongs. | |
235 | */ | |
236 | __be16 hh_type ____cacheline_aligned_in_smp; | |
237 | /* protocol identifier, f.e ETH_P_IP | |
1da177e4 LT |
238 | * NOTE: For VLANs, this will be the |
239 | * encapuslated type. --BLG | |
240 | */ | |
d5c42c0e | 241 | u16 hh_len; /* length of header */ |
1da177e4 | 242 | int (*hh_output)(struct sk_buff *skb); |
3644f0ce | 243 | seqlock_t hh_lock; |
1da177e4 LT |
244 | |
245 | /* cached hardware header; allow for machine alignment needs. */ | |
246 | #define HH_DATA_MOD 16 | |
247 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 248 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
249 | #define HH_DATA_ALIGN(__len) \ |
250 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
251 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
252 | }; | |
253 | ||
254 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. | |
255 | * Alternative is: | |
256 | * dev->hard_header_len ? (dev->hard_header_len + | |
257 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
258 | * | |
259 | * We could use other alignment values, but we must maintain the | |
260 | * relationship HH alignment <= LL alignment. | |
f5184d26 JB |
261 | * |
262 | * LL_ALLOCATED_SPACE also takes into account the tailroom the device | |
263 | * may need. | |
1da177e4 LT |
264 | */ |
265 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 266 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 267 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 JB |
268 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
269 | #define LL_ALLOCATED_SPACE(dev) \ | |
270 | ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
1da177e4 | 271 | |
3b04ddde SH |
272 | struct header_ops { |
273 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
274 | unsigned short type, const void *daddr, | |
275 | const void *saddr, unsigned len); | |
276 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); | |
277 | int (*rebuild)(struct sk_buff *skb); | |
278 | #define HAVE_HEADER_CACHE | |
279 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh); | |
280 | void (*cache_update)(struct hh_cache *hh, | |
281 | const struct net_device *dev, | |
282 | const unsigned char *haddr); | |
283 | }; | |
284 | ||
1da177e4 LT |
285 | /* These flag bits are private to the generic network queueing |
286 | * layer, they may not be explicitly referenced by any other | |
287 | * code. | |
288 | */ | |
289 | ||
d94d9fee | 290 | enum netdev_state_t { |
1da177e4 LT |
291 | __LINK_STATE_START, |
292 | __LINK_STATE_PRESENT, | |
1da177e4 | 293 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
294 | __LINK_STATE_LINKWATCH_PENDING, |
295 | __LINK_STATE_DORMANT, | |
1da177e4 LT |
296 | }; |
297 | ||
298 | ||
299 | /* | |
300 | * This structure holds at boot time configured netdevice settings. They | |
fe2918b0 | 301 | * are then used in the device probing. |
1da177e4 LT |
302 | */ |
303 | struct netdev_boot_setup { | |
304 | char name[IFNAMSIZ]; | |
305 | struct ifmap map; | |
306 | }; | |
307 | #define NETDEV_BOOT_SETUP_MAX 8 | |
308 | ||
20380731 | 309 | extern int __init netdev_boot_setup(char *str); |
1da177e4 | 310 | |
bea3348e SH |
311 | /* |
312 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
313 | */ | |
314 | struct napi_struct { | |
315 | /* The poll_list must only be managed by the entity which | |
316 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
317 | * whoever atomically sets that bit can add this napi_struct | |
318 | * to the per-cpu poll_list, and whoever clears that bit | |
319 | * can remove from the list right before clearing the bit. | |
320 | */ | |
321 | struct list_head poll_list; | |
322 | ||
323 | unsigned long state; | |
324 | int weight; | |
325 | int (*poll)(struct napi_struct *, int); | |
326 | #ifdef CONFIG_NETPOLL | |
327 | spinlock_t poll_lock; | |
328 | int poll_owner; | |
bea3348e | 329 | #endif |
4ae5544f HX |
330 | |
331 | unsigned int gro_count; | |
332 | ||
5d38a079 | 333 | struct net_device *dev; |
d565b0a1 HX |
334 | struct list_head dev_list; |
335 | struct sk_buff *gro_list; | |
5d38a079 | 336 | struct sk_buff *skb; |
bea3348e SH |
337 | }; |
338 | ||
d94d9fee | 339 | enum { |
bea3348e | 340 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
a0a46196 | 341 | NAPI_STATE_DISABLE, /* Disable pending */ |
7b363e44 | 342 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
bea3348e SH |
343 | }; |
344 | ||
5b252f0c | 345 | enum gro_result { |
d1c76af9 HX |
346 | GRO_MERGED, |
347 | GRO_MERGED_FREE, | |
348 | GRO_HELD, | |
349 | GRO_NORMAL, | |
350 | GRO_DROP, | |
351 | }; | |
5b252f0c | 352 | typedef enum gro_result gro_result_t; |
d1c76af9 | 353 | |
b3c97528 | 354 | extern void __napi_schedule(struct napi_struct *n); |
bea3348e | 355 | |
a0a46196 DM |
356 | static inline int napi_disable_pending(struct napi_struct *n) |
357 | { | |
358 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
359 | } | |
360 | ||
bea3348e SH |
361 | /** |
362 | * napi_schedule_prep - check if napi can be scheduled | |
363 | * @n: napi context | |
364 | * | |
365 | * Test if NAPI routine is already running, and if not mark | |
366 | * it as running. This is used as a condition variable | |
a0a46196 DM |
367 | * insure only one NAPI poll instance runs. We also make |
368 | * sure there is no pending NAPI disable. | |
bea3348e SH |
369 | */ |
370 | static inline int napi_schedule_prep(struct napi_struct *n) | |
371 | { | |
a0a46196 DM |
372 | return !napi_disable_pending(n) && |
373 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); | |
bea3348e SH |
374 | } |
375 | ||
376 | /** | |
377 | * napi_schedule - schedule NAPI poll | |
378 | * @n: napi context | |
379 | * | |
380 | * Schedule NAPI poll routine to be called if it is not already | |
381 | * running. | |
382 | */ | |
383 | static inline void napi_schedule(struct napi_struct *n) | |
384 | { | |
385 | if (napi_schedule_prep(n)) | |
386 | __napi_schedule(n); | |
387 | } | |
388 | ||
bfe13f54 RD |
389 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
390 | static inline int napi_reschedule(struct napi_struct *napi) | |
391 | { | |
392 | if (napi_schedule_prep(napi)) { | |
393 | __napi_schedule(napi); | |
394 | return 1; | |
395 | } | |
396 | return 0; | |
397 | } | |
398 | ||
bea3348e SH |
399 | /** |
400 | * napi_complete - NAPI processing complete | |
401 | * @n: napi context | |
402 | * | |
403 | * Mark NAPI processing as complete. | |
404 | */ | |
d565b0a1 HX |
405 | extern void __napi_complete(struct napi_struct *n); |
406 | extern void napi_complete(struct napi_struct *n); | |
bea3348e SH |
407 | |
408 | /** | |
409 | * napi_disable - prevent NAPI from scheduling | |
410 | * @n: napi context | |
411 | * | |
412 | * Stop NAPI from being scheduled on this context. | |
413 | * Waits till any outstanding processing completes. | |
414 | */ | |
415 | static inline void napi_disable(struct napi_struct *n) | |
416 | { | |
a0a46196 | 417 | set_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e | 418 | while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) |
43cc7380 | 419 | msleep(1); |
a0a46196 | 420 | clear_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e SH |
421 | } |
422 | ||
423 | /** | |
424 | * napi_enable - enable NAPI scheduling | |
425 | * @n: napi context | |
426 | * | |
427 | * Resume NAPI from being scheduled on this context. | |
428 | * Must be paired with napi_disable. | |
429 | */ | |
430 | static inline void napi_enable(struct napi_struct *n) | |
431 | { | |
432 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
433 | smp_mb__before_clear_bit(); | |
434 | clear_bit(NAPI_STATE_SCHED, &n->state); | |
435 | } | |
436 | ||
c264c3de SH |
437 | #ifdef CONFIG_SMP |
438 | /** | |
439 | * napi_synchronize - wait until NAPI is not running | |
440 | * @n: napi context | |
441 | * | |
442 | * Wait until NAPI is done being scheduled on this context. | |
443 | * Waits till any outstanding processing completes but | |
444 | * does not disable future activations. | |
445 | */ | |
446 | static inline void napi_synchronize(const struct napi_struct *n) | |
447 | { | |
448 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
449 | msleep(1); | |
450 | } | |
451 | #else | |
452 | # define napi_synchronize(n) barrier() | |
453 | #endif | |
454 | ||
d94d9fee | 455 | enum netdev_queue_state_t { |
79d16385 | 456 | __QUEUE_STATE_XOFF, |
c3f26a26 | 457 | __QUEUE_STATE_FROZEN, |
79d16385 DM |
458 | }; |
459 | ||
bb949fbd | 460 | struct netdev_queue { |
6a321cb3 ED |
461 | /* |
462 | * read mostly part | |
463 | */ | |
bb949fbd | 464 | struct net_device *dev; |
b0e1e646 | 465 | struct Qdisc *qdisc; |
79d16385 | 466 | unsigned long state; |
b0e1e646 | 467 | struct Qdisc *qdisc_sleeping; |
6a321cb3 ED |
468 | /* |
469 | * write mostly part | |
470 | */ | |
471 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
472 | int xmit_lock_owner; | |
9d21493b ED |
473 | /* |
474 | * please use this field instead of dev->trans_start | |
475 | */ | |
476 | unsigned long trans_start; | |
7004bf25 ED |
477 | unsigned long tx_bytes; |
478 | unsigned long tx_packets; | |
479 | unsigned long tx_dropped; | |
e8a0464c | 480 | } ____cacheline_aligned_in_smp; |
bb949fbd | 481 | |
d314774c SH |
482 | |
483 | /* | |
484 | * This structure defines the management hooks for network devices. | |
00829823 SH |
485 | * The following hooks can be defined; unless noted otherwise, they are |
486 | * optional and can be filled with a null pointer. | |
d314774c SH |
487 | * |
488 | * int (*ndo_init)(struct net_device *dev); | |
489 | * This function is called once when network device is registered. | |
490 | * The network device can use this to any late stage initializaton | |
491 | * or semantic validattion. It can fail with an error code which will | |
492 | * be propogated back to register_netdev | |
493 | * | |
494 | * void (*ndo_uninit)(struct net_device *dev); | |
495 | * This function is called when device is unregistered or when registration | |
496 | * fails. It is not called if init fails. | |
497 | * | |
498 | * int (*ndo_open)(struct net_device *dev); | |
499 | * This function is called when network device transistions to the up | |
500 | * state. | |
501 | * | |
502 | * int (*ndo_stop)(struct net_device *dev); | |
503 | * This function is called when network device transistions to the down | |
504 | * state. | |
505 | * | |
dc1f8bf6 SH |
506 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
507 | * struct net_device *dev); | |
00829823 | 508 | * Called when a packet needs to be transmitted. |
dc1f8bf6 SH |
509 | * Must return NETDEV_TX_OK , NETDEV_TX_BUSY. |
510 | * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX) | |
00829823 SH |
511 | * Required can not be NULL. |
512 | * | |
513 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb); | |
514 | * Called to decide which queue to when device supports multiple | |
515 | * transmit queues. | |
516 | * | |
d314774c SH |
517 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
518 | * This function is called to allow device receiver to make | |
519 | * changes to configuration when multicast or promiscious is enabled. | |
520 | * | |
521 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
522 | * This function is called device changes address list filtering. | |
523 | * | |
524 | * void (*ndo_set_multicast_list)(struct net_device *dev); | |
525 | * This function is called when the multicast address list changes. | |
526 | * | |
527 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
528 | * This function is called when the Media Access Control address | |
37b607c5 | 529 | * needs to be changed. If this interface is not defined, the |
d314774c SH |
530 | * mac address can not be changed. |
531 | * | |
532 | * int (*ndo_validate_addr)(struct net_device *dev); | |
533 | * Test if Media Access Control address is valid for the device. | |
534 | * | |
535 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
536 | * Called when a user request an ioctl which can't be handled by | |
537 | * the generic interface code. If not defined ioctl's return | |
538 | * not supported error code. | |
539 | * | |
540 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); | |
541 | * Used to set network devices bus interface parameters. This interface | |
542 | * is retained for legacy reason, new devices should use the bus | |
543 | * interface (PCI) for low level management. | |
544 | * | |
545 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
546 | * Called when a user wants to change the Maximum Transfer Unit | |
547 | * of a device. If not defined, any request to change MTU will | |
548 | * will return an error. | |
549 | * | |
00829823 | 550 | * void (*ndo_tx_timeout)(struct net_device *dev); |
d314774c SH |
551 | * Callback uses when the transmitter has not made any progress |
552 | * for dev->watchdog ticks. | |
553 | * | |
d308e38f | 554 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
d314774c SH |
555 | * Called when a user wants to get the network device usage |
556 | * statistics. If not defined, the counters in dev->stats will | |
557 | * be used. | |
558 | * | |
559 | * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp); | |
560 | * If device support VLAN receive accleration | |
561 | * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called | |
562 | * when vlan groups for the device changes. Note: grp is NULL | |
563 | * if no vlan's groups are being used. | |
564 | * | |
565 | * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid); | |
566 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
567 | * this function is called when a VLAN id is registered. | |
568 | * | |
569 | * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid); | |
570 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
571 | * this function is called when a VLAN id is unregistered. | |
572 | * | |
573 | * void (*ndo_poll_controller)(struct net_device *dev); | |
574 | */ | |
47fd5b83 | 575 | #define HAVE_NET_DEVICE_OPS |
d314774c SH |
576 | struct net_device_ops { |
577 | int (*ndo_init)(struct net_device *dev); | |
578 | void (*ndo_uninit)(struct net_device *dev); | |
579 | int (*ndo_open)(struct net_device *dev); | |
580 | int (*ndo_stop)(struct net_device *dev); | |
dc1f8bf6 | 581 | netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb, |
00829823 SH |
582 | struct net_device *dev); |
583 | u16 (*ndo_select_queue)(struct net_device *dev, | |
584 | struct sk_buff *skb); | |
d314774c SH |
585 | #define HAVE_CHANGE_RX_FLAGS |
586 | void (*ndo_change_rx_flags)(struct net_device *dev, | |
587 | int flags); | |
588 | #define HAVE_SET_RX_MODE | |
589 | void (*ndo_set_rx_mode)(struct net_device *dev); | |
590 | #define HAVE_MULTICAST | |
591 | void (*ndo_set_multicast_list)(struct net_device *dev); | |
592 | #define HAVE_SET_MAC_ADDR | |
593 | int (*ndo_set_mac_address)(struct net_device *dev, | |
594 | void *addr); | |
595 | #define HAVE_VALIDATE_ADDR | |
596 | int (*ndo_validate_addr)(struct net_device *dev); | |
597 | #define HAVE_PRIVATE_IOCTL | |
598 | int (*ndo_do_ioctl)(struct net_device *dev, | |
599 | struct ifreq *ifr, int cmd); | |
600 | #define HAVE_SET_CONFIG | |
601 | int (*ndo_set_config)(struct net_device *dev, | |
602 | struct ifmap *map); | |
603 | #define HAVE_CHANGE_MTU | |
00829823 SH |
604 | int (*ndo_change_mtu)(struct net_device *dev, |
605 | int new_mtu); | |
606 | int (*ndo_neigh_setup)(struct net_device *dev, | |
607 | struct neigh_parms *); | |
d314774c SH |
608 | #define HAVE_TX_TIMEOUT |
609 | void (*ndo_tx_timeout) (struct net_device *dev); | |
610 | ||
611 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); | |
612 | ||
613 | void (*ndo_vlan_rx_register)(struct net_device *dev, | |
614 | struct vlan_group *grp); | |
615 | void (*ndo_vlan_rx_add_vid)(struct net_device *dev, | |
616 | unsigned short vid); | |
617 | void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, | |
618 | unsigned short vid); | |
619 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
620 | #define HAVE_NETDEV_POLL | |
621 | void (*ndo_poll_controller)(struct net_device *dev); | |
622 | #endif | |
4d288d57 | 623 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
cb454399 YZ |
624 | int (*ndo_fcoe_enable)(struct net_device *dev); |
625 | int (*ndo_fcoe_disable)(struct net_device *dev); | |
4d288d57 YZ |
626 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
627 | u16 xid, | |
628 | struct scatterlist *sgl, | |
629 | unsigned int sgc); | |
630 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
631 | u16 xid); | |
df5c7945 YZ |
632 | #define NETDEV_FCOE_WWNN 0 |
633 | #define NETDEV_FCOE_WWPN 1 | |
634 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, | |
635 | u64 *wwn, int type); | |
4d288d57 | 636 | #endif |
d314774c SH |
637 | }; |
638 | ||
1da177e4 LT |
639 | /* |
640 | * The DEVICE structure. | |
641 | * Actually, this whole structure is a big mistake. It mixes I/O | |
642 | * data with strictly "high-level" data, and it has to know about | |
643 | * almost every data structure used in the INET module. | |
644 | * | |
645 | * FIXME: cleanup struct net_device such that network protocol info | |
646 | * moves out. | |
647 | */ | |
648 | ||
d94d9fee | 649 | struct net_device { |
1da177e4 LT |
650 | |
651 | /* | |
652 | * This is the first field of the "visible" part of this structure | |
653 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
654 | * the interface. | |
655 | */ | |
656 | char name[IFNAMSIZ]; | |
9356b8fc ED |
657 | /* device name hash chain */ |
658 | struct hlist_node name_hlist; | |
0b815a1a SH |
659 | /* snmp alias */ |
660 | char *ifalias; | |
1da177e4 LT |
661 | |
662 | /* | |
663 | * I/O specific fields | |
664 | * FIXME: Merge these and struct ifmap into one | |
665 | */ | |
666 | unsigned long mem_end; /* shared mem end */ | |
667 | unsigned long mem_start; /* shared mem start */ | |
668 | unsigned long base_addr; /* device I/O address */ | |
669 | unsigned int irq; /* device IRQ number */ | |
670 | ||
671 | /* | |
672 | * Some hardware also needs these fields, but they are not | |
673 | * part of the usual set specified in Space.c. | |
674 | */ | |
675 | ||
676 | unsigned char if_port; /* Selectable AUI, TP,..*/ | |
677 | unsigned char dma; /* DMA channel */ | |
678 | ||
679 | unsigned long state; | |
680 | ||
7562f876 | 681 | struct list_head dev_list; |
bea3348e | 682 | struct list_head napi_list; |
44a0873d | 683 | struct list_head unreg_list; |
1da177e4 | 684 | |
9356b8fc ED |
685 | /* Net device features */ |
686 | unsigned long features; | |
687 | #define NETIF_F_SG 1 /* Scatter/gather IO. */ | |
d212f87b | 688 | #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ |
9356b8fc ED |
689 | #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ |
690 | #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ | |
d212f87b | 691 | #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ |
9356b8fc ED |
692 | #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ |
693 | #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ | |
694 | #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ | |
695 | #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ | |
696 | #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ | |
697 | #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ | |
37c3185a | 698 | #define NETIF_F_GSO 2048 /* Enable software GSO. */ |
e24eb521 CB |
699 | #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ |
700 | /* do not use LLTX in new drivers */ | |
ce286d32 | 701 | #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ |
d565b0a1 | 702 | #define NETIF_F_GRO 16384 /* Generic receive offload */ |
3ae7c0b2 | 703 | #define NETIF_F_LRO 32768 /* large receive offload */ |
7967168c | 704 | |
8dc92f7e | 705 | /* the GSO_MASK reserves bits 16 through 23 */ |
01d5b2fc | 706 | #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */ |
8dc92f7e | 707 | #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */ |
bb2af4f5 | 708 | #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/ |
01d5b2fc | 709 | |
7967168c | 710 | /* Segmentation offload features */ |
289c79a4 | 711 | #define NETIF_F_GSO_SHIFT 16 |
43eb99c5 | 712 | #define NETIF_F_GSO_MASK 0x00ff0000 |
7967168c | 713 | #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) |
f83ef8c0 | 714 | #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) |
576a30eb | 715 | #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) |
f83ef8c0 HX |
716 | #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) |
717 | #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) | |
01d5b2fc | 718 | #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT) |
9356b8fc | 719 | |
78eb8877 HX |
720 | /* List of features with software fallbacks. */ |
721 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) | |
722 | ||
d212f87b | 723 | |
8648b305 | 724 | #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) |
d212f87b SH |
725 | #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) |
726 | #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) | |
727 | #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) | |
8648b305 | 728 | |
b63365a2 HX |
729 | /* |
730 | * If one device supports one of these features, then enable them | |
731 | * for all in netdev_increment_features. | |
732 | */ | |
733 | #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ | |
d314774c | 734 | NETIF_F_SG | NETIF_F_HIGHDMA | \ |
b63365a2 HX |
735 | NETIF_F_FRAGLIST) |
736 | ||
1da177e4 LT |
737 | /* Interface index. Unique device identifier */ |
738 | int ifindex; | |
739 | int iflink; | |
740 | ||
c45d286e | 741 | struct net_device_stats stats; |
1da177e4 | 742 | |
b86e0280 | 743 | #ifdef CONFIG_WIRELESS_EXT |
1da177e4 LT |
744 | /* List of functions to handle Wireless Extensions (instead of ioctl). |
745 | * See <net/iw_handler.h> for details. Jean II */ | |
746 | const struct iw_handler_def * wireless_handlers; | |
747 | /* Instance data managed by the core of Wireless Extensions. */ | |
748 | struct iw_public_data * wireless_data; | |
b86e0280 | 749 | #endif |
d314774c SH |
750 | /* Management operations */ |
751 | const struct net_device_ops *netdev_ops; | |
76fd8593 | 752 | const struct ethtool_ops *ethtool_ops; |
1da177e4 | 753 | |
3b04ddde SH |
754 | /* Hardware header description */ |
755 | const struct header_ops *header_ops; | |
756 | ||
b00055aa | 757 | unsigned int flags; /* interface flags (a la BSD) */ |
1da177e4 LT |
758 | unsigned short gflags; |
759 | unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */ | |
760 | unsigned short padded; /* How much padding added by alloc_netdev() */ | |
761 | ||
b00055aa SR |
762 | unsigned char operstate; /* RFC2863 operstate */ |
763 | unsigned char link_mode; /* mapping policy to operstate */ | |
764 | ||
1da177e4 LT |
765 | unsigned mtu; /* interface MTU value */ |
766 | unsigned short type; /* interface hardware type */ | |
767 | unsigned short hard_header_len; /* hardware hdr length */ | |
1da177e4 | 768 | |
f5184d26 JB |
769 | /* extra head- and tailroom the hardware may need, but not in all cases |
770 | * can this be guaranteed, especially tailroom. Some cases also use | |
771 | * LL_MAX_HEADER instead to allocate the skb. | |
772 | */ | |
773 | unsigned short needed_headroom; | |
774 | unsigned short needed_tailroom; | |
775 | ||
1da177e4 LT |
776 | struct net_device *master; /* Pointer to master device of a group, |
777 | * which this device is member of. | |
778 | */ | |
779 | ||
780 | /* Interface address info. */ | |
a6f9a705 | 781 | unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ |
1da177e4 LT |
782 | unsigned char addr_len; /* hardware address length */ |
783 | unsigned short dev_id; /* for shared network cards */ | |
784 | ||
31278e71 JP |
785 | struct netdev_hw_addr_list uc; /* Secondary unicast |
786 | mac addresses */ | |
4417da66 | 787 | int uc_promisc; |
ccffad25 | 788 | spinlock_t addr_list_lock; |
3fba5a8b | 789 | struct dev_addr_list *mc_list; /* Multicast mac addresses */ |
1da177e4 | 790 | int mc_count; /* Number of installed mcasts */ |
9d45abe1 WC |
791 | unsigned int promiscuity; |
792 | unsigned int allmulti; | |
1da177e4 | 793 | |
1da177e4 LT |
794 | |
795 | /* Protocol specific pointers */ | |
796 | ||
91da11f8 LB |
797 | #ifdef CONFIG_NET_DSA |
798 | void *dsa_ptr; /* dsa specific data */ | |
799 | #endif | |
1da177e4 | 800 | void *atalk_ptr; /* AppleTalk link */ |
fe2918b0 | 801 | void *ip_ptr; /* IPv4 specific data */ |
1da177e4 LT |
802 | void *dn_ptr; /* DECnet specific data */ |
803 | void *ip6_ptr; /* IPv6 specific data */ | |
804 | void *ec_ptr; /* Econet specific data */ | |
805 | void *ax25_ptr; /* AX.25 specific data */ | |
704232c2 JB |
806 | struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, |
807 | assign before registering */ | |
1da177e4 | 808 | |
9356b8fc ED |
809 | /* |
810 | * Cache line mostly used on receive path (including eth_type_trans()) | |
811 | */ | |
9356b8fc ED |
812 | unsigned long last_rx; /* Time of last Rx */ |
813 | /* Interface address info used in eth_type_trans() */ | |
f001fde5 JP |
814 | unsigned char *dev_addr; /* hw address, (before bcast |
815 | because most packets are | |
816 | unicast) */ | |
817 | ||
31278e71 JP |
818 | struct netdev_hw_addr_list dev_addrs; /* list of device |
819 | hw addresses */ | |
9356b8fc ED |
820 | |
821 | unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ | |
1da177e4 | 822 | |
bb949fbd | 823 | struct netdev_queue rx_queue; |
e8a0464c DM |
824 | |
825 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; | |
fd2ea0a7 DM |
826 | |
827 | /* Number of TX queues allocated at alloc_netdev_mq() time */ | |
e8a0464c | 828 | unsigned int num_tx_queues; |
fd2ea0a7 DM |
829 | |
830 | /* Number of TX queues currently active in device */ | |
831 | unsigned int real_num_tx_queues; | |
832 | ||
af356afa PM |
833 | /* root qdisc from userspace point of view */ |
834 | struct Qdisc *qdisc; | |
835 | ||
1da177e4 | 836 | unsigned long tx_queue_len; /* Max frames per queue allowed */ |
c3f26a26 | 837 | spinlock_t tx_global_lock; |
9356b8fc ED |
838 | /* |
839 | * One part is mostly used on xmit path (device) | |
840 | */ | |
9356b8fc | 841 | /* These may be needed for future network-power-down code. */ |
9d21493b ED |
842 | |
843 | /* | |
844 | * trans_start here is expensive for high speed devices on SMP, | |
845 | * please use netdev_queue->trans_start instead. | |
846 | */ | |
9356b8fc ED |
847 | unsigned long trans_start; /* Time (in jiffies) of last Tx */ |
848 | ||
849 | int watchdog_timeo; /* used by dev_watchdog() */ | |
850 | struct timer_list watchdog_timer; | |
851 | ||
1da177e4 | 852 | /* Number of references to this device */ |
9356b8fc ED |
853 | atomic_t refcnt ____cacheline_aligned_in_smp; |
854 | ||
1da177e4 LT |
855 | /* delayed register/unregister */ |
856 | struct list_head todo_list; | |
1da177e4 LT |
857 | /* device index hash chain */ |
858 | struct hlist_node index_hlist; | |
859 | ||
572a103d HX |
860 | struct net_device *link_watch_next; |
861 | ||
1da177e4 LT |
862 | /* register/unregister state machine */ |
863 | enum { NETREG_UNINITIALIZED=0, | |
b17a7c17 | 864 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
865 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
866 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
867 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 868 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
1da177e4 LT |
869 | } reg_state; |
870 | ||
d314774c SH |
871 | /* Called from unregister, can be used to call free_netdev */ |
872 | void (*destructor)(struct net_device *dev); | |
1da177e4 | 873 | |
1da177e4 | 874 | #ifdef CONFIG_NETPOLL |
115c1d6e | 875 | struct netpoll_info *npinfo; |
1da177e4 | 876 | #endif |
eae792b7 | 877 | |
c346dca1 | 878 | #ifdef CONFIG_NET_NS |
4a1c5371 EB |
879 | /* Network namespace this network device is inside */ |
880 | struct net *nd_net; | |
c346dca1 | 881 | #endif |
4a1c5371 | 882 | |
4951704b DM |
883 | /* mid-layer private */ |
884 | void *ml_priv; | |
885 | ||
1da177e4 LT |
886 | /* bridge stuff */ |
887 | struct net_bridge_port *br_port; | |
b863ceb7 PM |
888 | /* macvlan */ |
889 | struct macvlan_port *macvlan_port; | |
eca9ebac PM |
890 | /* GARP */ |
891 | struct garp_port *garp_port; | |
1da177e4 | 892 | |
1da177e4 | 893 | /* class/net/name entry */ |
43cb76d9 | 894 | struct device dev; |
0c509a6c EB |
895 | /* space for optional device, statistics, and wireless sysfs groups */ |
896 | const struct attribute_group *sysfs_groups[4]; | |
38f7b870 PM |
897 | |
898 | /* rtnetlink link ops */ | |
899 | const struct rtnl_link_ops *rtnl_link_ops; | |
f25f4e44 | 900 | |
289c79a4 PM |
901 | /* VLAN feature mask */ |
902 | unsigned long vlan_features; | |
903 | ||
82cc1a7a PWJ |
904 | /* for setting kernel sock attribute on TCP connection setup */ |
905 | #define GSO_MAX_SIZE 65536 | |
906 | unsigned int gso_max_size; | |
d314774c | 907 | |
7a6b6f51 | 908 | #ifdef CONFIG_DCB |
2f90b865 | 909 | /* Data Center Bridging netlink ops */ |
32953543 | 910 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
2f90b865 AD |
911 | #endif |
912 | ||
4d288d57 YZ |
913 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
914 | /* max exchange id for FCoE LRO by ddp */ | |
915 | unsigned int fcoe_ddp_xid; | |
916 | #endif | |
1da177e4 | 917 | }; |
43cb76d9 | 918 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 LT |
919 | |
920 | #define NETDEV_ALIGN 32 | |
1da177e4 | 921 | |
e8a0464c DM |
922 | static inline |
923 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
924 | unsigned int index) | |
925 | { | |
926 | return &dev->_tx[index]; | |
927 | } | |
928 | ||
929 | static inline void netdev_for_each_tx_queue(struct net_device *dev, | |
930 | void (*f)(struct net_device *, | |
931 | struct netdev_queue *, | |
932 | void *), | |
933 | void *arg) | |
934 | { | |
935 | unsigned int i; | |
936 | ||
937 | for (i = 0; i < dev->num_tx_queues; i++) | |
938 | f(dev, &dev->_tx[i], arg); | |
939 | } | |
940 | ||
c346dca1 YH |
941 | /* |
942 | * Net namespace inlines | |
943 | */ | |
944 | static inline | |
945 | struct net *dev_net(const struct net_device *dev) | |
946 | { | |
947 | #ifdef CONFIG_NET_NS | |
948 | return dev->nd_net; | |
949 | #else | |
950 | return &init_net; | |
951 | #endif | |
952 | } | |
953 | ||
954 | static inline | |
f5aa23fd | 955 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 YH |
956 | { |
957 | #ifdef CONFIG_NET_NS | |
f3005d7f DL |
958 | release_net(dev->nd_net); |
959 | dev->nd_net = hold_net(net); | |
c346dca1 YH |
960 | #endif |
961 | } | |
962 | ||
cf85d08f LB |
963 | static inline bool netdev_uses_dsa_tags(struct net_device *dev) |
964 | { | |
965 | #ifdef CONFIG_NET_DSA_TAG_DSA | |
966 | if (dev->dsa_ptr != NULL) | |
967 | return dsa_uses_dsa_tags(dev->dsa_ptr); | |
968 | #endif | |
969 | ||
970 | return 0; | |
971 | } | |
972 | ||
396138f0 LB |
973 | static inline bool netdev_uses_trailer_tags(struct net_device *dev) |
974 | { | |
975 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
976 | if (dev->dsa_ptr != NULL) | |
977 | return dsa_uses_trailer_tags(dev->dsa_ptr); | |
978 | #endif | |
979 | ||
980 | return 0; | |
981 | } | |
982 | ||
bea3348e SH |
983 | /** |
984 | * netdev_priv - access network device private data | |
985 | * @dev: network device | |
986 | * | |
987 | * Get network device private data | |
988 | */ | |
6472ce60 | 989 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 990 | { |
1ce8e7b5 | 991 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
1da177e4 LT |
992 | } |
993 | ||
1da177e4 LT |
994 | /* Set the sysfs physical device reference for the network logical device |
995 | * if set prior to registration will cause a symlink during initialization. | |
996 | */ | |
43cb76d9 | 997 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 998 | |
384912ed MH |
999 | /* Set the sysfs device type for the network logical device to allow |
1000 | * fin grained indentification of different network device types. For | |
1001 | * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc. | |
1002 | */ | |
1003 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) | |
1004 | ||
3b582cc1 SH |
1005 | /** |
1006 | * netif_napi_add - initialize a napi context | |
1007 | * @dev: network device | |
1008 | * @napi: napi context | |
1009 | * @poll: polling function | |
1010 | * @weight: default weight | |
1011 | * | |
1012 | * netif_napi_add() must be used to initialize a napi context prior to calling | |
1013 | * *any* of the other napi related functions. | |
1014 | */ | |
d565b0a1 HX |
1015 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
1016 | int (*poll)(struct napi_struct *, int), int weight); | |
bea3348e | 1017 | |
d8156534 AD |
1018 | /** |
1019 | * netif_napi_del - remove a napi context | |
1020 | * @napi: napi context | |
1021 | * | |
1022 | * netif_napi_del() removes a napi context from the network device napi list | |
1023 | */ | |
d565b0a1 HX |
1024 | void netif_napi_del(struct napi_struct *napi); |
1025 | ||
1026 | struct napi_gro_cb { | |
78a478d0 HX |
1027 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
1028 | void *frag0; | |
1029 | ||
7489594c HX |
1030 | /* Length of frag0. */ |
1031 | unsigned int frag0_len; | |
1032 | ||
86911732 HX |
1033 | /* This indicates where we are processing relative to skb->data. */ |
1034 | int data_offset; | |
1035 | ||
d565b0a1 HX |
1036 | /* This is non-zero if the packet may be of the same flow. */ |
1037 | int same_flow; | |
1038 | ||
1039 | /* This is non-zero if the packet cannot be merged with the new skb. */ | |
1040 | int flush; | |
1041 | ||
1042 | /* Number of segments aggregated. */ | |
1043 | int count; | |
5d38a079 HX |
1044 | |
1045 | /* Free the skb? */ | |
1046 | int free; | |
d565b0a1 HX |
1047 | }; |
1048 | ||
1049 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) | |
d8156534 | 1050 | |
1da177e4 | 1051 | struct packet_type { |
f2ccd8fa DM |
1052 | __be16 type; /* This is really htons(ether_type). */ |
1053 | struct net_device *dev; /* NULL is wildcarded here */ | |
1054 | int (*func) (struct sk_buff *, | |
1055 | struct net_device *, | |
1056 | struct packet_type *, | |
1057 | struct net_device *); | |
576a30eb HX |
1058 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
1059 | int features); | |
a430a43d | 1060 | int (*gso_send_check)(struct sk_buff *skb); |
d565b0a1 HX |
1061 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
1062 | struct sk_buff *skb); | |
1063 | int (*gro_complete)(struct sk_buff *skb); | |
1da177e4 LT |
1064 | void *af_packet_priv; |
1065 | struct list_head list; | |
1066 | }; | |
1067 | ||
1068 | #include <linux/interrupt.h> | |
1069 | #include <linux/notifier.h> | |
1070 | ||
1da177e4 LT |
1071 | extern rwlock_t dev_base_lock; /* Device list lock */ |
1072 | ||
7562f876 | 1073 | |
881d966b EB |
1074 | #define for_each_netdev(net, d) \ |
1075 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
c6d14c84 ED |
1076 | #define for_each_netdev_rcu(net, d) \ |
1077 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b EB |
1078 | #define for_each_netdev_safe(net, d, n) \ |
1079 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
1080 | #define for_each_netdev_continue(net, d) \ | |
1081 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
1082 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) | |
7562f876 | 1083 | |
a050c33f DL |
1084 | static inline struct net_device *next_net_device(struct net_device *dev) |
1085 | { | |
1086 | struct list_head *lh; | |
1087 | struct net *net; | |
1088 | ||
c346dca1 | 1089 | net = dev_net(dev); |
a050c33f DL |
1090 | lh = dev->dev_list.next; |
1091 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
1092 | } | |
1093 | ||
1094 | static inline struct net_device *first_net_device(struct net *net) | |
1095 | { | |
1096 | return list_empty(&net->dev_base_head) ? NULL : | |
1097 | net_device_entry(net->dev_base_head.next); | |
1098 | } | |
7562f876 | 1099 | |
1da177e4 LT |
1100 | extern int netdev_boot_setup_check(struct net_device *dev); |
1101 | extern unsigned long netdev_boot_base(const char *prefix, int unit); | |
881d966b EB |
1102 | extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr); |
1103 | extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1104 | extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1da177e4 LT |
1105 | extern void dev_add_pack(struct packet_type *pt); |
1106 | extern void dev_remove_pack(struct packet_type *pt); | |
1107 | extern void __dev_remove_pack(struct packet_type *pt); | |
1108 | ||
881d966b | 1109 | extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags, |
1da177e4 | 1110 | unsigned short mask); |
881d966b | 1111 | extern struct net_device *dev_get_by_name(struct net *net, const char *name); |
72c9528b | 1112 | extern struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); |
881d966b | 1113 | extern struct net_device *__dev_get_by_name(struct net *net, const char *name); |
1da177e4 LT |
1114 | extern int dev_alloc_name(struct net_device *dev, const char *name); |
1115 | extern int dev_open(struct net_device *dev); | |
1116 | extern int dev_close(struct net_device *dev); | |
0187bdfb | 1117 | extern void dev_disable_lro(struct net_device *dev); |
1da177e4 LT |
1118 | extern int dev_queue_xmit(struct sk_buff *skb); |
1119 | extern int register_netdevice(struct net_device *dev); | |
44a0873d ED |
1120 | extern void unregister_netdevice_queue(struct net_device *dev, |
1121 | struct list_head *head); | |
9b5e383c | 1122 | extern void unregister_netdevice_many(struct list_head *head); |
44a0873d ED |
1123 | static inline void unregister_netdevice(struct net_device *dev) |
1124 | { | |
1125 | unregister_netdevice_queue(dev, NULL); | |
1126 | } | |
1127 | ||
1da177e4 LT |
1128 | extern void free_netdev(struct net_device *dev); |
1129 | extern void synchronize_net(void); | |
1130 | extern int register_netdevice_notifier(struct notifier_block *nb); | |
1131 | extern int unregister_netdevice_notifier(struct notifier_block *nb); | |
937f1ba5 | 1132 | extern int init_dummy_netdev(struct net_device *dev); |
9d40bbda | 1133 | extern void netdev_resync_ops(struct net_device *dev); |
937f1ba5 | 1134 | |
ad7379d4 | 1135 | extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
881d966b EB |
1136 | extern struct net_device *dev_get_by_index(struct net *net, int ifindex); |
1137 | extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
fb699dfd | 1138 | extern struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); |
1da177e4 LT |
1139 | extern int dev_restart(struct net_device *dev); |
1140 | #ifdef CONFIG_NETPOLL_TRAP | |
1141 | extern int netpoll_trap(void); | |
1142 | #endif | |
86911732 HX |
1143 | extern int skb_gro_receive(struct sk_buff **head, |
1144 | struct sk_buff *skb); | |
78a478d0 | 1145 | extern void skb_gro_reset_offset(struct sk_buff *skb); |
86911732 HX |
1146 | |
1147 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) | |
1148 | { | |
1149 | return NAPI_GRO_CB(skb)->data_offset; | |
1150 | } | |
1151 | ||
1152 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) | |
1153 | { | |
1154 | return skb->len - NAPI_GRO_CB(skb)->data_offset; | |
1155 | } | |
1156 | ||
1157 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) | |
1158 | { | |
1159 | NAPI_GRO_CB(skb)->data_offset += len; | |
1160 | } | |
1161 | ||
a5b1cf28 HX |
1162 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
1163 | unsigned int offset) | |
86911732 | 1164 | { |
a5b1cf28 HX |
1165 | return NAPI_GRO_CB(skb)->frag0 + offset; |
1166 | } | |
78a478d0 | 1167 | |
a5b1cf28 HX |
1168 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
1169 | { | |
1170 | return NAPI_GRO_CB(skb)->frag0_len < hlen; | |
1171 | } | |
78a478d0 | 1172 | |
a5b1cf28 HX |
1173 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
1174 | unsigned int offset) | |
1175 | { | |
1176 | NAPI_GRO_CB(skb)->frag0 = NULL; | |
1177 | NAPI_GRO_CB(skb)->frag0_len = 0; | |
1178 | return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL; | |
86911732 | 1179 | } |
1da177e4 | 1180 | |
aa4b9f53 HX |
1181 | static inline void *skb_gro_mac_header(struct sk_buff *skb) |
1182 | { | |
78d3fd0b | 1183 | return NAPI_GRO_CB(skb)->frag0 ?: skb_mac_header(skb); |
aa4b9f53 HX |
1184 | } |
1185 | ||
36e7b1b8 HX |
1186 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
1187 | { | |
78d3fd0b HX |
1188 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
1189 | skb_network_offset(skb); | |
36e7b1b8 HX |
1190 | } |
1191 | ||
0c4e8581 SH |
1192 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
1193 | unsigned short type, | |
3b04ddde SH |
1194 | const void *daddr, const void *saddr, |
1195 | unsigned len) | |
0c4e8581 | 1196 | { |
f1ecfd5d | 1197 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 1198 | return 0; |
3b04ddde SH |
1199 | |
1200 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
1201 | } |
1202 | ||
b95cce35 SH |
1203 | static inline int dev_parse_header(const struct sk_buff *skb, |
1204 | unsigned char *haddr) | |
1205 | { | |
1206 | const struct net_device *dev = skb->dev; | |
1207 | ||
1b83336b | 1208 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 1209 | return 0; |
3b04ddde | 1210 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
1211 | } |
1212 | ||
1da177e4 LT |
1213 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
1214 | extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); | |
1215 | static inline int unregister_gifconf(unsigned int family) | |
1216 | { | |
1217 | return register_gifconf(family, NULL); | |
1218 | } | |
1219 | ||
1220 | /* | |
1221 | * Incoming packets are placed on per-cpu queues so that | |
1222 | * no locking is needed. | |
1223 | */ | |
d94d9fee | 1224 | struct softnet_data { |
37437bb2 | 1225 | struct Qdisc *output_queue; |
1da177e4 LT |
1226 | struct sk_buff_head input_pkt_queue; |
1227 | struct list_head poll_list; | |
1da177e4 LT |
1228 | struct sk_buff *completion_queue; |
1229 | ||
bea3348e | 1230 | struct napi_struct backlog; |
1da177e4 LT |
1231 | }; |
1232 | ||
1233 | DECLARE_PER_CPU(struct softnet_data,softnet_data); | |
1234 | ||
1235 | #define HAVE_NETIF_QUEUE | |
1236 | ||
37437bb2 | 1237 | extern void __netif_schedule(struct Qdisc *q); |
1da177e4 | 1238 | |
86d804e1 | 1239 | static inline void netif_schedule_queue(struct netdev_queue *txq) |
1da177e4 | 1240 | { |
79d16385 | 1241 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1242 | __netif_schedule(txq->qdisc); |
86d804e1 DM |
1243 | } |
1244 | ||
fd2ea0a7 DM |
1245 | static inline void netif_tx_schedule_all(struct net_device *dev) |
1246 | { | |
1247 | unsigned int i; | |
1248 | ||
1249 | for (i = 0; i < dev->num_tx_queues; i++) | |
1250 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
1251 | } | |
1252 | ||
d29f749e DJ |
1253 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
1254 | { | |
1255 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1256 | } | |
1257 | ||
bea3348e SH |
1258 | /** |
1259 | * netif_start_queue - allow transmit | |
1260 | * @dev: network device | |
1261 | * | |
1262 | * Allow upper layers to call the device hard_start_xmit routine. | |
1263 | */ | |
1da177e4 LT |
1264 | static inline void netif_start_queue(struct net_device *dev) |
1265 | { | |
e8a0464c | 1266 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1267 | } |
1268 | ||
fd2ea0a7 DM |
1269 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
1270 | { | |
1271 | unsigned int i; | |
1272 | ||
1273 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1274 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1275 | netif_tx_start_queue(txq); | |
1276 | } | |
1277 | } | |
1278 | ||
79d16385 | 1279 | static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) |
1da177e4 LT |
1280 | { |
1281 | #ifdef CONFIG_NETPOLL_TRAP | |
5f286e11 | 1282 | if (netpoll_trap()) { |
7b3d3e4f | 1283 | netif_tx_start_queue(dev_queue); |
1da177e4 | 1284 | return; |
5f286e11 | 1285 | } |
1da177e4 | 1286 | #endif |
79d16385 | 1287 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state)) |
37437bb2 | 1288 | __netif_schedule(dev_queue->qdisc); |
79d16385 DM |
1289 | } |
1290 | ||
d29f749e DJ |
1291 | /** |
1292 | * netif_wake_queue - restart transmit | |
1293 | * @dev: network device | |
1294 | * | |
1295 | * Allow upper layers to call the device hard_start_xmit routine. | |
1296 | * Used for flow control when transmit resources are available. | |
1297 | */ | |
79d16385 DM |
1298 | static inline void netif_wake_queue(struct net_device *dev) |
1299 | { | |
e8a0464c | 1300 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1301 | } |
1302 | ||
fd2ea0a7 DM |
1303 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
1304 | { | |
1305 | unsigned int i; | |
1306 | ||
1307 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1308 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1309 | netif_tx_wake_queue(txq); | |
1310 | } | |
1311 | } | |
1312 | ||
d29f749e DJ |
1313 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
1314 | { | |
1315 | set_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1316 | } | |
1317 | ||
bea3348e SH |
1318 | /** |
1319 | * netif_stop_queue - stop transmitted packets | |
1320 | * @dev: network device | |
1321 | * | |
1322 | * Stop upper layers calling the device hard_start_xmit routine. | |
1323 | * Used for flow control when transmit resources are unavailable. | |
1324 | */ | |
1da177e4 LT |
1325 | static inline void netif_stop_queue(struct net_device *dev) |
1326 | { | |
e8a0464c | 1327 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1328 | } |
1329 | ||
fd2ea0a7 DM |
1330 | static inline void netif_tx_stop_all_queues(struct net_device *dev) |
1331 | { | |
1332 | unsigned int i; | |
1333 | ||
1334 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1335 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1336 | netif_tx_stop_queue(txq); | |
1337 | } | |
1338 | } | |
1339 | ||
d29f749e DJ |
1340 | static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
1341 | { | |
1342 | return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1343 | } | |
1344 | ||
bea3348e SH |
1345 | /** |
1346 | * netif_queue_stopped - test if transmit queue is flowblocked | |
1347 | * @dev: network device | |
1348 | * | |
1349 | * Test if transmit queue on device is currently unable to send. | |
1350 | */ | |
1da177e4 LT |
1351 | static inline int netif_queue_stopped(const struct net_device *dev) |
1352 | { | |
e8a0464c | 1353 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1354 | } |
1355 | ||
c3f26a26 DM |
1356 | static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue) |
1357 | { | |
1358 | return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state); | |
1359 | } | |
1360 | ||
bea3348e SH |
1361 | /** |
1362 | * netif_running - test if up | |
1363 | * @dev: network device | |
1364 | * | |
1365 | * Test if the device has been brought up. | |
1366 | */ | |
1da177e4 LT |
1367 | static inline int netif_running(const struct net_device *dev) |
1368 | { | |
1369 | return test_bit(__LINK_STATE_START, &dev->state); | |
1370 | } | |
1371 | ||
f25f4e44 PWJ |
1372 | /* |
1373 | * Routines to manage the subqueues on a device. We only need start | |
1374 | * stop, and a check if it's stopped. All other device management is | |
1375 | * done at the overall netdevice level. | |
1376 | * Also test the device if we're multiqueue. | |
1377 | */ | |
bea3348e SH |
1378 | |
1379 | /** | |
1380 | * netif_start_subqueue - allow sending packets on subqueue | |
1381 | * @dev: network device | |
1382 | * @queue_index: sub queue index | |
1383 | * | |
1384 | * Start individual transmit queue of a device with multiple transmit queues. | |
1385 | */ | |
f25f4e44 PWJ |
1386 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
1387 | { | |
fd2ea0a7 | 1388 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
1389 | |
1390 | netif_tx_start_queue(txq); | |
f25f4e44 PWJ |
1391 | } |
1392 | ||
bea3348e SH |
1393 | /** |
1394 | * netif_stop_subqueue - stop sending packets on subqueue | |
1395 | * @dev: network device | |
1396 | * @queue_index: sub queue index | |
1397 | * | |
1398 | * Stop individual transmit queue of a device with multiple transmit queues. | |
1399 | */ | |
f25f4e44 PWJ |
1400 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
1401 | { | |
fd2ea0a7 | 1402 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1403 | #ifdef CONFIG_NETPOLL_TRAP |
1404 | if (netpoll_trap()) | |
1405 | return; | |
1406 | #endif | |
7b3d3e4f | 1407 | netif_tx_stop_queue(txq); |
f25f4e44 PWJ |
1408 | } |
1409 | ||
bea3348e SH |
1410 | /** |
1411 | * netif_subqueue_stopped - test status of subqueue | |
1412 | * @dev: network device | |
1413 | * @queue_index: sub queue index | |
1414 | * | |
1415 | * Check individual transmit queue of a device with multiple transmit queues. | |
1416 | */ | |
668f895a | 1417 | static inline int __netif_subqueue_stopped(const struct net_device *dev, |
f25f4e44 PWJ |
1418 | u16 queue_index) |
1419 | { | |
fd2ea0a7 | 1420 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
1421 | |
1422 | return netif_tx_queue_stopped(txq); | |
f25f4e44 PWJ |
1423 | } |
1424 | ||
668f895a PE |
1425 | static inline int netif_subqueue_stopped(const struct net_device *dev, |
1426 | struct sk_buff *skb) | |
1427 | { | |
1428 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
1429 | } | |
bea3348e SH |
1430 | |
1431 | /** | |
1432 | * netif_wake_subqueue - allow sending packets on subqueue | |
1433 | * @dev: network device | |
1434 | * @queue_index: sub queue index | |
1435 | * | |
1436 | * Resume individual transmit queue of a device with multiple transmit queues. | |
1437 | */ | |
f25f4e44 PWJ |
1438 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) |
1439 | { | |
fd2ea0a7 | 1440 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1441 | #ifdef CONFIG_NETPOLL_TRAP |
1442 | if (netpoll_trap()) | |
1443 | return; | |
1444 | #endif | |
fd2ea0a7 | 1445 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1446 | __netif_schedule(txq->qdisc); |
f25f4e44 PWJ |
1447 | } |
1448 | ||
bea3348e SH |
1449 | /** |
1450 | * netif_is_multiqueue - test if device has multiple transmit queues | |
1451 | * @dev: network device | |
1452 | * | |
1453 | * Check if device has multiple transmit queues | |
bea3348e | 1454 | */ |
f25f4e44 PWJ |
1455 | static inline int netif_is_multiqueue(const struct net_device *dev) |
1456 | { | |
09e83b5d | 1457 | return (dev->num_tx_queues > 1); |
f25f4e44 | 1458 | } |
1da177e4 LT |
1459 | |
1460 | /* Use this variant when it is known for sure that it | |
0ef47309 ML |
1461 | * is executing from hardware interrupt context or with hardware interrupts |
1462 | * disabled. | |
1da177e4 | 1463 | */ |
bea3348e | 1464 | extern void dev_kfree_skb_irq(struct sk_buff *skb); |
1da177e4 LT |
1465 | |
1466 | /* Use this variant in places where it could be invoked | |
0ef47309 ML |
1467 | * from either hardware interrupt or other context, with hardware interrupts |
1468 | * either disabled or enabled. | |
1da177e4 | 1469 | */ |
56079431 | 1470 | extern void dev_kfree_skb_any(struct sk_buff *skb); |
1da177e4 LT |
1471 | |
1472 | #define HAVE_NETIF_RX 1 | |
1473 | extern int netif_rx(struct sk_buff *skb); | |
1474 | extern int netif_rx_ni(struct sk_buff *skb); | |
1475 | #define HAVE_NETIF_RECEIVE_SKB 1 | |
1476 | extern int netif_receive_skb(struct sk_buff *skb); | |
d565b0a1 | 1477 | extern void napi_gro_flush(struct napi_struct *napi); |
5b252f0c | 1478 | extern gro_result_t dev_gro_receive(struct napi_struct *napi, |
96e93eab | 1479 | struct sk_buff *skb); |
c7c4b3b6 BH |
1480 | extern gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb); |
1481 | extern gro_result_t napi_gro_receive(struct napi_struct *napi, | |
d565b0a1 | 1482 | struct sk_buff *skb); |
96e93eab HX |
1483 | extern void napi_reuse_skb(struct napi_struct *napi, |
1484 | struct sk_buff *skb); | |
76620aaf | 1485 | extern struct sk_buff * napi_get_frags(struct napi_struct *napi); |
c7c4b3b6 | 1486 | extern gro_result_t napi_frags_finish(struct napi_struct *napi, |
5b252f0c BH |
1487 | struct sk_buff *skb, |
1488 | gro_result_t ret); | |
76620aaf | 1489 | extern struct sk_buff * napi_frags_skb(struct napi_struct *napi); |
c7c4b3b6 | 1490 | extern gro_result_t napi_gro_frags(struct napi_struct *napi); |
76620aaf HX |
1491 | |
1492 | static inline void napi_free_frags(struct napi_struct *napi) | |
1493 | { | |
1494 | kfree_skb(napi->skb); | |
1495 | napi->skb = NULL; | |
1496 | } | |
1497 | ||
bc1d0411 | 1498 | extern void netif_nit_deliver(struct sk_buff *skb); |
c2373ee9 | 1499 | extern int dev_valid_name(const char *name); |
881d966b EB |
1500 | extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); |
1501 | extern int dev_ethtool(struct net *net, struct ifreq *); | |
1da177e4 LT |
1502 | extern unsigned dev_get_flags(const struct net_device *); |
1503 | extern int dev_change_flags(struct net_device *, unsigned); | |
cf04a4c7 | 1504 | extern int dev_change_name(struct net_device *, const char *); |
0b815a1a | 1505 | extern int dev_set_alias(struct net_device *, const char *, size_t); |
ce286d32 EB |
1506 | extern int dev_change_net_namespace(struct net_device *, |
1507 | struct net *, const char *); | |
1da177e4 LT |
1508 | extern int dev_set_mtu(struct net_device *, int); |
1509 | extern int dev_set_mac_address(struct net_device *, | |
1510 | struct sockaddr *); | |
f6a78bfc | 1511 | extern int dev_hard_start_xmit(struct sk_buff *skb, |
fd2ea0a7 DM |
1512 | struct net_device *dev, |
1513 | struct netdev_queue *txq); | |
1da177e4 | 1514 | |
20380731 | 1515 | extern int netdev_budget; |
1da177e4 LT |
1516 | |
1517 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
1518 | extern void netdev_run_todo(void); | |
1519 | ||
bea3348e SH |
1520 | /** |
1521 | * dev_put - release reference to device | |
1522 | * @dev: network device | |
1523 | * | |
9ef4429b | 1524 | * Release reference to device to allow it to be freed. |
bea3348e | 1525 | */ |
1da177e4 LT |
1526 | static inline void dev_put(struct net_device *dev) |
1527 | { | |
1528 | atomic_dec(&dev->refcnt); | |
1529 | } | |
1530 | ||
bea3348e SH |
1531 | /** |
1532 | * dev_hold - get reference to device | |
1533 | * @dev: network device | |
1534 | * | |
9ef4429b | 1535 | * Hold reference to device to keep it from being freed. |
bea3348e | 1536 | */ |
15333061 SH |
1537 | static inline void dev_hold(struct net_device *dev) |
1538 | { | |
1539 | atomic_inc(&dev->refcnt); | |
1540 | } | |
1da177e4 LT |
1541 | |
1542 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
1543 | * and _off may be called from IRQ context, but it is caller | |
1544 | * who is responsible for serialization of these calls. | |
b00055aa SR |
1545 | * |
1546 | * The name carrier is inappropriate, these functions should really be | |
1547 | * called netif_lowerlayer_*() because they represent the state of any | |
1548 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
1549 | */ |
1550 | ||
1551 | extern void linkwatch_fire_event(struct net_device *dev); | |
1552 | ||
bea3348e SH |
1553 | /** |
1554 | * netif_carrier_ok - test if carrier present | |
1555 | * @dev: network device | |
1556 | * | |
1557 | * Check if carrier is present on device | |
1558 | */ | |
1da177e4 LT |
1559 | static inline int netif_carrier_ok(const struct net_device *dev) |
1560 | { | |
1561 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
1562 | } | |
1563 | ||
9d21493b ED |
1564 | extern unsigned long dev_trans_start(struct net_device *dev); |
1565 | ||
1da177e4 LT |
1566 | extern void __netdev_watchdog_up(struct net_device *dev); |
1567 | ||
0a242efc | 1568 | extern void netif_carrier_on(struct net_device *dev); |
1da177e4 | 1569 | |
0a242efc | 1570 | extern void netif_carrier_off(struct net_device *dev); |
1da177e4 | 1571 | |
bea3348e SH |
1572 | /** |
1573 | * netif_dormant_on - mark device as dormant. | |
1574 | * @dev: network device | |
1575 | * | |
1576 | * Mark device as dormant (as per RFC2863). | |
1577 | * | |
1578 | * The dormant state indicates that the relevant interface is not | |
1579 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
1580 | * in a "pending" state, waiting for some external event. For "on- | |
1581 | * demand" interfaces, this new state identifies the situation where the | |
1582 | * interface is waiting for events to place it in the up state. | |
1583 | * | |
1584 | */ | |
b00055aa SR |
1585 | static inline void netif_dormant_on(struct net_device *dev) |
1586 | { | |
1587 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1588 | linkwatch_fire_event(dev); | |
1589 | } | |
1590 | ||
bea3348e SH |
1591 | /** |
1592 | * netif_dormant_off - set device as not dormant. | |
1593 | * @dev: network device | |
1594 | * | |
1595 | * Device is not in dormant state. | |
1596 | */ | |
b00055aa SR |
1597 | static inline void netif_dormant_off(struct net_device *dev) |
1598 | { | |
1599 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1600 | linkwatch_fire_event(dev); | |
1601 | } | |
1602 | ||
bea3348e SH |
1603 | /** |
1604 | * netif_dormant - test if carrier present | |
1605 | * @dev: network device | |
1606 | * | |
1607 | * Check if carrier is present on device | |
1608 | */ | |
b00055aa SR |
1609 | static inline int netif_dormant(const struct net_device *dev) |
1610 | { | |
1611 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
1612 | } | |
1613 | ||
1614 | ||
bea3348e SH |
1615 | /** |
1616 | * netif_oper_up - test if device is operational | |
1617 | * @dev: network device | |
1618 | * | |
1619 | * Check if carrier is operational | |
1620 | */ | |
d94d9fee ED |
1621 | static inline int netif_oper_up(const struct net_device *dev) |
1622 | { | |
b00055aa SR |
1623 | return (dev->operstate == IF_OPER_UP || |
1624 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
1625 | } | |
1626 | ||
bea3348e SH |
1627 | /** |
1628 | * netif_device_present - is device available or removed | |
1629 | * @dev: network device | |
1630 | * | |
1631 | * Check if device has not been removed from system. | |
1632 | */ | |
1da177e4 LT |
1633 | static inline int netif_device_present(struct net_device *dev) |
1634 | { | |
1635 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
1636 | } | |
1637 | ||
56079431 | 1638 | extern void netif_device_detach(struct net_device *dev); |
1da177e4 | 1639 | |
56079431 | 1640 | extern void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
1641 | |
1642 | /* | |
1643 | * Network interface message level settings | |
1644 | */ | |
1645 | #define HAVE_NETIF_MSG 1 | |
1646 | ||
1647 | enum { | |
1648 | NETIF_MSG_DRV = 0x0001, | |
1649 | NETIF_MSG_PROBE = 0x0002, | |
1650 | NETIF_MSG_LINK = 0x0004, | |
1651 | NETIF_MSG_TIMER = 0x0008, | |
1652 | NETIF_MSG_IFDOWN = 0x0010, | |
1653 | NETIF_MSG_IFUP = 0x0020, | |
1654 | NETIF_MSG_RX_ERR = 0x0040, | |
1655 | NETIF_MSG_TX_ERR = 0x0080, | |
1656 | NETIF_MSG_TX_QUEUED = 0x0100, | |
1657 | NETIF_MSG_INTR = 0x0200, | |
1658 | NETIF_MSG_TX_DONE = 0x0400, | |
1659 | NETIF_MSG_RX_STATUS = 0x0800, | |
1660 | NETIF_MSG_PKTDATA = 0x1000, | |
1661 | NETIF_MSG_HW = 0x2000, | |
1662 | NETIF_MSG_WOL = 0x4000, | |
1663 | }; | |
1664 | ||
1665 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
1666 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
1667 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
1668 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
1669 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
1670 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
1671 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
1672 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
1673 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
1674 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
1675 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
1676 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
1677 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
1678 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
1679 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
1680 | ||
1681 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
1682 | { | |
1683 | /* use default */ | |
1684 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
1685 | return default_msg_enable_bits; | |
1686 | if (debug_value == 0) /* no output */ | |
1687 | return 0; | |
1688 | /* set low N bits */ | |
1689 | return (1 << debug_value) - 1; | |
1690 | } | |
1691 | ||
c773e847 | 1692 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 1693 | { |
c773e847 DM |
1694 | spin_lock(&txq->_xmit_lock); |
1695 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
1696 | } |
1697 | ||
fd2ea0a7 DM |
1698 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
1699 | { | |
1700 | spin_lock_bh(&txq->_xmit_lock); | |
1701 | txq->xmit_lock_owner = smp_processor_id(); | |
1702 | } | |
1703 | ||
c3f26a26 DM |
1704 | static inline int __netif_tx_trylock(struct netdev_queue *txq) |
1705 | { | |
1706 | int ok = spin_trylock(&txq->_xmit_lock); | |
1707 | if (likely(ok)) | |
1708 | txq->xmit_lock_owner = smp_processor_id(); | |
1709 | return ok; | |
1710 | } | |
1711 | ||
1712 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
1713 | { | |
1714 | txq->xmit_lock_owner = -1; | |
1715 | spin_unlock(&txq->_xmit_lock); | |
1716 | } | |
1717 | ||
1718 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
1719 | { | |
1720 | txq->xmit_lock_owner = -1; | |
1721 | spin_unlock_bh(&txq->_xmit_lock); | |
1722 | } | |
1723 | ||
08baf561 ED |
1724 | static inline void txq_trans_update(struct netdev_queue *txq) |
1725 | { | |
1726 | if (txq->xmit_lock_owner != -1) | |
1727 | txq->trans_start = jiffies; | |
1728 | } | |
1729 | ||
d29f749e DJ |
1730 | /** |
1731 | * netif_tx_lock - grab network device transmit lock | |
1732 | * @dev: network device | |
d29f749e DJ |
1733 | * |
1734 | * Get network device transmit lock | |
1735 | */ | |
22dd7495 JHS |
1736 | static inline void netif_tx_lock(struct net_device *dev) |
1737 | { | |
e8a0464c | 1738 | unsigned int i; |
c3f26a26 | 1739 | int cpu; |
c773e847 | 1740 | |
c3f26a26 DM |
1741 | spin_lock(&dev->tx_global_lock); |
1742 | cpu = smp_processor_id(); | |
e8a0464c DM |
1743 | for (i = 0; i < dev->num_tx_queues; i++) { |
1744 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
1745 | |
1746 | /* We are the only thread of execution doing a | |
1747 | * freeze, but we have to grab the _xmit_lock in | |
1748 | * order to synchronize with threads which are in | |
1749 | * the ->hard_start_xmit() handler and already | |
1750 | * checked the frozen bit. | |
1751 | */ | |
e8a0464c | 1752 | __netif_tx_lock(txq, cpu); |
c3f26a26 DM |
1753 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
1754 | __netif_tx_unlock(txq); | |
e8a0464c | 1755 | } |
932ff279 HX |
1756 | } |
1757 | ||
1758 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
1759 | { | |
e8a0464c DM |
1760 | local_bh_disable(); |
1761 | netif_tx_lock(dev); | |
932ff279 HX |
1762 | } |
1763 | ||
932ff279 HX |
1764 | static inline void netif_tx_unlock(struct net_device *dev) |
1765 | { | |
e8a0464c DM |
1766 | unsigned int i; |
1767 | ||
1768 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1769 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c773e847 | 1770 | |
c3f26a26 DM |
1771 | /* No need to grab the _xmit_lock here. If the |
1772 | * queue is not stopped for another reason, we | |
1773 | * force a schedule. | |
1774 | */ | |
1775 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
7b3d3e4f | 1776 | netif_schedule_queue(txq); |
c3f26a26 DM |
1777 | } |
1778 | spin_unlock(&dev->tx_global_lock); | |
932ff279 HX |
1779 | } |
1780 | ||
1781 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
1782 | { | |
e8a0464c DM |
1783 | netif_tx_unlock(dev); |
1784 | local_bh_enable(); | |
932ff279 HX |
1785 | } |
1786 | ||
c773e847 | 1787 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 1788 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 1789 | __netif_tx_lock(txq, cpu); \ |
22dd7495 JHS |
1790 | } \ |
1791 | } | |
1792 | ||
c773e847 | 1793 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 1794 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 1795 | __netif_tx_unlock(txq); \ |
22dd7495 JHS |
1796 | } \ |
1797 | } | |
1798 | ||
1da177e4 LT |
1799 | static inline void netif_tx_disable(struct net_device *dev) |
1800 | { | |
fd2ea0a7 | 1801 | unsigned int i; |
c3f26a26 | 1802 | int cpu; |
fd2ea0a7 | 1803 | |
c3f26a26 DM |
1804 | local_bh_disable(); |
1805 | cpu = smp_processor_id(); | |
fd2ea0a7 DM |
1806 | for (i = 0; i < dev->num_tx_queues; i++) { |
1807 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
1808 | |
1809 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 1810 | netif_tx_stop_queue(txq); |
c3f26a26 | 1811 | __netif_tx_unlock(txq); |
fd2ea0a7 | 1812 | } |
c3f26a26 | 1813 | local_bh_enable(); |
1da177e4 LT |
1814 | } |
1815 | ||
e308a5d8 DM |
1816 | static inline void netif_addr_lock(struct net_device *dev) |
1817 | { | |
1818 | spin_lock(&dev->addr_list_lock); | |
1819 | } | |
1820 | ||
1821 | static inline void netif_addr_lock_bh(struct net_device *dev) | |
1822 | { | |
1823 | spin_lock_bh(&dev->addr_list_lock); | |
1824 | } | |
1825 | ||
1826 | static inline void netif_addr_unlock(struct net_device *dev) | |
1827 | { | |
1828 | spin_unlock(&dev->addr_list_lock); | |
1829 | } | |
1830 | ||
1831 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
1832 | { | |
1833 | spin_unlock_bh(&dev->addr_list_lock); | |
1834 | } | |
1835 | ||
f001fde5 | 1836 | /* |
31278e71 | 1837 | * dev_addrs walker. Should be used only for read access. Call with |
f001fde5 JP |
1838 | * rcu_read_lock held. |
1839 | */ | |
1840 | #define for_each_dev_addr(dev, ha) \ | |
31278e71 | 1841 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
f001fde5 | 1842 | |
1da177e4 LT |
1843 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
1844 | ||
1845 | extern void ether_setup(struct net_device *dev); | |
1846 | ||
1847 | /* Support for loadable net-drivers */ | |
f25f4e44 PWJ |
1848 | extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, |
1849 | void (*setup)(struct net_device *), | |
1850 | unsigned int queue_count); | |
1851 | #define alloc_netdev(sizeof_priv, name, setup) \ | |
1852 | alloc_netdev_mq(sizeof_priv, name, setup, 1) | |
1da177e4 LT |
1853 | extern int register_netdev(struct net_device *dev); |
1854 | extern void unregister_netdev(struct net_device *dev); | |
f001fde5 JP |
1855 | |
1856 | /* Functions used for device addresses handling */ | |
1857 | extern int dev_addr_add(struct net_device *dev, unsigned char *addr, | |
1858 | unsigned char addr_type); | |
1859 | extern int dev_addr_del(struct net_device *dev, unsigned char *addr, | |
1860 | unsigned char addr_type); | |
1861 | extern int dev_addr_add_multiple(struct net_device *to_dev, | |
1862 | struct net_device *from_dev, | |
1863 | unsigned char addr_type); | |
1864 | extern int dev_addr_del_multiple(struct net_device *to_dev, | |
1865 | struct net_device *from_dev, | |
1866 | unsigned char addr_type); | |
1867 | ||
4417da66 PM |
1868 | /* Functions used for secondary unicast and multicast support */ |
1869 | extern void dev_set_rx_mode(struct net_device *dev); | |
1870 | extern void __dev_set_rx_mode(struct net_device *dev); | |
ccffad25 JP |
1871 | extern int dev_unicast_delete(struct net_device *dev, void *addr); |
1872 | extern int dev_unicast_add(struct net_device *dev, void *addr); | |
e83a2ea8 CL |
1873 | extern int dev_unicast_sync(struct net_device *to, struct net_device *from); |
1874 | extern void dev_unicast_unsync(struct net_device *to, struct net_device *from); | |
1da177e4 LT |
1875 | extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all); |
1876 | extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly); | |
a0a400d7 PM |
1877 | extern int dev_mc_sync(struct net_device *to, struct net_device *from); |
1878 | extern void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
61cbc2fc PM |
1879 | extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all); |
1880 | extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly); | |
e83a2ea8 CL |
1881 | extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); |
1882 | extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); | |
dad9b335 WC |
1883 | extern int dev_set_promiscuity(struct net_device *dev, int inc); |
1884 | extern int dev_set_allmulti(struct net_device *dev, int inc); | |
1da177e4 | 1885 | extern void netdev_state_change(struct net_device *dev); |
75c78500 MS |
1886 | extern void netdev_bonding_change(struct net_device *dev, |
1887 | unsigned long event); | |
d8a33ac4 | 1888 | extern void netdev_features_change(struct net_device *dev); |
1da177e4 | 1889 | /* Load a device via the kmod */ |
881d966b | 1890 | extern void dev_load(struct net *net, const char *name); |
1da177e4 | 1891 | extern void dev_mcast_init(void); |
eeda3fd6 SH |
1892 | extern const struct net_device_stats *dev_get_stats(struct net_device *dev); |
1893 | ||
1da177e4 LT |
1894 | extern int netdev_max_backlog; |
1895 | extern int weight_p; | |
1896 | extern int netdev_set_master(struct net_device *dev, struct net_device *master); | |
84fa7933 | 1897 | extern int skb_checksum_help(struct sk_buff *skb); |
576a30eb | 1898 | extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); |
fb286bb2 HX |
1899 | #ifdef CONFIG_BUG |
1900 | extern void netdev_rx_csum_fault(struct net_device *dev); | |
1901 | #else | |
1902 | static inline void netdev_rx_csum_fault(struct net_device *dev) | |
1903 | { | |
1904 | } | |
1905 | #endif | |
1da177e4 LT |
1906 | /* rx skb timestamps */ |
1907 | extern void net_enable_timestamp(void); | |
1908 | extern void net_disable_timestamp(void); | |
1909 | ||
20380731 ACM |
1910 | #ifdef CONFIG_PROC_FS |
1911 | extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); | |
1912 | extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); | |
1913 | extern void dev_seq_stop(struct seq_file *seq, void *v); | |
1914 | #endif | |
1915 | ||
b8a9787e JV |
1916 | extern int netdev_class_create_file(struct class_attribute *class_attr); |
1917 | extern void netdev_class_remove_file(struct class_attribute *class_attr); | |
1918 | ||
cf04a4c7 | 1919 | extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len); |
6579e57b | 1920 | |
20380731 ACM |
1921 | extern void linkwatch_run_queue(void); |
1922 | ||
b63365a2 HX |
1923 | unsigned long netdev_increment_features(unsigned long all, unsigned long one, |
1924 | unsigned long mask); | |
1925 | unsigned long netdev_fix_features(unsigned long features, const char *name); | |
7f353bf2 | 1926 | |
bcd76111 | 1927 | static inline int net_gso_ok(int features, int gso_type) |
576a30eb | 1928 | { |
bcd76111 | 1929 | int feature = gso_type << NETIF_F_GSO_SHIFT; |
d6b4991a | 1930 | return (features & feature) == feature; |
576a30eb HX |
1931 | } |
1932 | ||
bcd76111 HX |
1933 | static inline int skb_gso_ok(struct sk_buff *skb, int features) |
1934 | { | |
278b2513 | 1935 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
a5bd8a13 | 1936 | (!skb_has_frags(skb) || (features & NETIF_F_FRAGLIST)); |
bcd76111 HX |
1937 | } |
1938 | ||
7967168c HX |
1939 | static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) |
1940 | { | |
a430a43d HX |
1941 | return skb_is_gso(skb) && |
1942 | (!skb_gso_ok(skb, dev->features) || | |
84fa7933 | 1943 | unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); |
7967168c HX |
1944 | } |
1945 | ||
82cc1a7a PWJ |
1946 | static inline void netif_set_gso_max_size(struct net_device *dev, |
1947 | unsigned int size) | |
1948 | { | |
1949 | dev->gso_max_size = size; | |
1950 | } | |
1951 | ||
5d4e039b JP |
1952 | static inline void skb_bond_set_mac_by_master(struct sk_buff *skb, |
1953 | struct net_device *master) | |
1954 | { | |
1955 | if (skb->pkt_type == PACKET_HOST) { | |
1956 | u16 *dest = (u16 *) eth_hdr(skb)->h_dest; | |
1957 | ||
1958 | memcpy(dest, master->dev_addr, ETH_ALEN); | |
1959 | } | |
1960 | } | |
1961 | ||
7ea49ed7 | 1962 | /* On bonding slaves other than the currently active slave, suppress |
f5b2b966 JV |
1963 | * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and |
1964 | * ARP on active-backup slaves with arp_validate enabled. | |
7ea49ed7 DM |
1965 | */ |
1966 | static inline int skb_bond_should_drop(struct sk_buff *skb) | |
1967 | { | |
1968 | struct net_device *dev = skb->dev; | |
1969 | struct net_device *master = dev->master; | |
1970 | ||
6cf3f41e JV |
1971 | if (master) { |
1972 | if (master->priv_flags & IFF_MASTER_ARPMON) | |
1973 | dev->last_rx = jiffies; | |
1974 | ||
5d4e039b JP |
1975 | if ((master->priv_flags & IFF_MASTER_ALB) && master->br_port) { |
1976 | /* Do address unmangle. The local destination address | |
1977 | * will be always the one master has. Provides the right | |
1978 | * functionality in a bridge. | |
1979 | */ | |
1980 | skb_bond_set_mac_by_master(skb, master); | |
1981 | } | |
1982 | ||
6cf3f41e JV |
1983 | if (dev->priv_flags & IFF_SLAVE_INACTIVE) { |
1984 | if ((dev->priv_flags & IFF_SLAVE_NEEDARP) && | |
f3a7c66b | 1985 | skb->protocol == __cpu_to_be16(ETH_P_ARP)) |
7ea49ed7 | 1986 | return 0; |
7ea49ed7 | 1987 | |
6cf3f41e JV |
1988 | if (master->priv_flags & IFF_MASTER_ALB) { |
1989 | if (skb->pkt_type != PACKET_BROADCAST && | |
1990 | skb->pkt_type != PACKET_MULTICAST) | |
1991 | return 0; | |
1992 | } | |
1993 | if (master->priv_flags & IFF_MASTER_8023AD && | |
f3a7c66b | 1994 | skb->protocol == __cpu_to_be16(ETH_P_SLOW)) |
6cf3f41e JV |
1995 | return 0; |
1996 | ||
1997 | return 1; | |
1998 | } | |
7ea49ed7 DM |
1999 | } |
2000 | return 0; | |
2001 | } | |
2002 | ||
505d4f73 | 2003 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 PM |
2004 | |
2005 | static inline int dev_ethtool_get_settings(struct net_device *dev, | |
2006 | struct ethtool_cmd *cmd) | |
2007 | { | |
2008 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings) | |
2009 | return -EOPNOTSUPP; | |
2010 | return dev->ethtool_ops->get_settings(dev, cmd); | |
2011 | } | |
2012 | ||
2013 | static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev) | |
2014 | { | |
2015 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum) | |
2016 | return 0; | |
2017 | return dev->ethtool_ops->get_rx_csum(dev); | |
2018 | } | |
2019 | ||
2020 | static inline u32 dev_ethtool_get_flags(struct net_device *dev) | |
2021 | { | |
2022 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_flags) | |
2023 | return 0; | |
2024 | return dev->ethtool_ops->get_flags(dev); | |
2025 | } | |
1da177e4 LT |
2026 | #endif /* __KERNEL__ */ |
2027 | ||
385a154c | 2028 | #endif /* _LINUX_NETDEVICE_H */ |