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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 */ | |
75 | #define NET_RX_CN_LOW 2 /* storm alert, just in case */ | |
76 | #define NET_RX_CN_MOD 3 /* Storm on its way! */ | |
77 | #define NET_RX_CN_HIGH 4 /* The storm is here */ | |
78 | #define NET_RX_BAD 5 /* packet dropped due to kernel error */ | |
79 | ||
b9df3cb8 GR |
80 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
81 | * indicates that the device will soon be dropping packets, or already drops | |
82 | * some packets of the same priority; prompting us to send less aggressively. */ | |
83 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e)) | |
1da177e4 LT |
84 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
85 | ||
86 | #endif | |
87 | ||
88 | #define MAX_ADDR_LEN 32 /* Largest hardware address length */ | |
89 | ||
90 | /* Driver transmit return codes */ | |
91 | #define NETDEV_TX_OK 0 /* driver took care of packet */ | |
92 | #define NETDEV_TX_BUSY 1 /* driver tx path was busy*/ | |
93 | #define NETDEV_TX_LOCKED -1 /* driver tx lock was already taken */ | |
94 | ||
c88e6f51 AB |
95 | #ifdef __KERNEL__ |
96 | ||
1da177e4 LT |
97 | /* |
98 | * Compute the worst case header length according to the protocols | |
99 | * used. | |
100 | */ | |
fe2918b0 | 101 | |
8388e3da DM |
102 | #if defined(CONFIG_WLAN_80211) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) |
103 | # if defined(CONFIG_MAC80211_MESH) | |
104 | # define LL_MAX_HEADER 128 | |
105 | # else | |
106 | # define LL_MAX_HEADER 96 | |
107 | # endif | |
c759a6b4 | 108 | #elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE) |
8388e3da | 109 | # define LL_MAX_HEADER 48 |
1da177e4 | 110 | #else |
8388e3da | 111 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
112 | #endif |
113 | ||
e81c7359 DM |
114 | #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \ |
115 | !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ | |
116 | !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ | |
117 | !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) | |
1da177e4 LT |
118 | #define MAX_HEADER LL_MAX_HEADER |
119 | #else | |
120 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
121 | #endif | |
122 | ||
c88e6f51 AB |
123 | #endif /* __KERNEL__ */ |
124 | ||
1da177e4 LT |
125 | /* |
126 | * Network device statistics. Akin to the 2.0 ether stats but | |
127 | * with byte counters. | |
128 | */ | |
fe2918b0 | 129 | |
1da177e4 LT |
130 | struct net_device_stats |
131 | { | |
132 | unsigned long rx_packets; /* total packets received */ | |
133 | unsigned long tx_packets; /* total packets transmitted */ | |
134 | unsigned long rx_bytes; /* total bytes received */ | |
135 | unsigned long tx_bytes; /* total bytes transmitted */ | |
136 | unsigned long rx_errors; /* bad packets received */ | |
137 | unsigned long tx_errors; /* packet transmit problems */ | |
138 | unsigned long rx_dropped; /* no space in linux buffers */ | |
139 | unsigned long tx_dropped; /* no space available in linux */ | |
140 | unsigned long multicast; /* multicast packets received */ | |
141 | unsigned long collisions; | |
142 | ||
143 | /* detailed rx_errors: */ | |
144 | unsigned long rx_length_errors; | |
145 | unsigned long rx_over_errors; /* receiver ring buff overflow */ | |
146 | unsigned long rx_crc_errors; /* recved pkt with crc error */ | |
147 | unsigned long rx_frame_errors; /* recv'd frame alignment error */ | |
148 | unsigned long rx_fifo_errors; /* recv'r fifo overrun */ | |
149 | unsigned long rx_missed_errors; /* receiver missed packet */ | |
150 | ||
151 | /* detailed tx_errors */ | |
152 | unsigned long tx_aborted_errors; | |
153 | unsigned long tx_carrier_errors; | |
154 | unsigned long tx_fifo_errors; | |
155 | unsigned long tx_heartbeat_errors; | |
156 | unsigned long tx_window_errors; | |
157 | ||
158 | /* for cslip etc */ | |
159 | unsigned long rx_compressed; | |
160 | unsigned long tx_compressed; | |
161 | }; | |
162 | ||
163 | ||
164 | /* Media selection options. */ | |
165 | enum { | |
166 | IF_PORT_UNKNOWN = 0, | |
167 | IF_PORT_10BASE2, | |
168 | IF_PORT_10BASET, | |
169 | IF_PORT_AUI, | |
170 | IF_PORT_100BASET, | |
171 | IF_PORT_100BASETX, | |
172 | IF_PORT_100BASEFX | |
173 | }; | |
174 | ||
175 | #ifdef __KERNEL__ | |
176 | ||
177 | #include <linux/cache.h> | |
178 | #include <linux/skbuff.h> | |
179 | ||
180 | struct neighbour; | |
181 | struct neigh_parms; | |
182 | struct sk_buff; | |
183 | ||
184 | struct netif_rx_stats | |
185 | { | |
186 | unsigned total; | |
187 | unsigned dropped; | |
188 | unsigned time_squeeze; | |
1da177e4 LT |
189 | unsigned cpu_collision; |
190 | }; | |
191 | ||
192 | DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat); | |
193 | ||
bf742482 PM |
194 | struct dev_addr_list |
195 | { | |
196 | struct dev_addr_list *next; | |
197 | u8 da_addr[MAX_ADDR_LEN]; | |
198 | u8 da_addrlen; | |
a0a400d7 | 199 | u8 da_synced; |
bf742482 PM |
200 | int da_users; |
201 | int da_gusers; | |
202 | }; | |
1da177e4 LT |
203 | |
204 | /* | |
205 | * We tag multicasts with these structures. | |
206 | */ | |
3fba5a8b PM |
207 | |
208 | #define dev_mc_list dev_addr_list | |
209 | #define dmi_addr da_addr | |
210 | #define dmi_addrlen da_addrlen | |
211 | #define dmi_users da_users | |
212 | #define dmi_gusers da_gusers | |
1da177e4 | 213 | |
f001fde5 JP |
214 | struct netdev_hw_addr { |
215 | struct list_head list; | |
216 | unsigned char addr[MAX_ADDR_LEN]; | |
217 | unsigned char type; | |
ccffad25 JP |
218 | #define NETDEV_HW_ADDR_T_LAN 1 |
219 | #define NETDEV_HW_ADDR_T_SAN 2 | |
220 | #define NETDEV_HW_ADDR_T_SLAVE 3 | |
221 | #define NETDEV_HW_ADDR_T_UNICAST 4 | |
222 | int refcount; | |
223 | bool synced; | |
f001fde5 JP |
224 | struct rcu_head rcu_head; |
225 | }; | |
226 | ||
1da177e4 LT |
227 | struct hh_cache |
228 | { | |
229 | struct hh_cache *hh_next; /* Next entry */ | |
230 | atomic_t hh_refcnt; /* number of users */ | |
f0490980 ED |
231 | /* |
232 | * We want hh_output, hh_len, hh_lock and hh_data be a in a separate | |
233 | * cache line on SMP. | |
234 | * They are mostly read, but hh_refcnt may be changed quite frequently, | |
235 | * incurring cache line ping pongs. | |
236 | */ | |
237 | __be16 hh_type ____cacheline_aligned_in_smp; | |
238 | /* protocol identifier, f.e ETH_P_IP | |
1da177e4 LT |
239 | * NOTE: For VLANs, this will be the |
240 | * encapuslated type. --BLG | |
241 | */ | |
d5c42c0e | 242 | u16 hh_len; /* length of header */ |
1da177e4 | 243 | int (*hh_output)(struct sk_buff *skb); |
3644f0ce | 244 | seqlock_t hh_lock; |
1da177e4 LT |
245 | |
246 | /* cached hardware header; allow for machine alignment needs. */ | |
247 | #define HH_DATA_MOD 16 | |
248 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 249 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
250 | #define HH_DATA_ALIGN(__len) \ |
251 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
252 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
253 | }; | |
254 | ||
255 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. | |
256 | * Alternative is: | |
257 | * dev->hard_header_len ? (dev->hard_header_len + | |
258 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
259 | * | |
260 | * We could use other alignment values, but we must maintain the | |
261 | * relationship HH alignment <= LL alignment. | |
f5184d26 JB |
262 | * |
263 | * LL_ALLOCATED_SPACE also takes into account the tailroom the device | |
264 | * may need. | |
1da177e4 LT |
265 | */ |
266 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 267 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 268 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 JB |
269 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
270 | #define LL_ALLOCATED_SPACE(dev) \ | |
271 | ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
1da177e4 | 272 | |
3b04ddde SH |
273 | struct header_ops { |
274 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
275 | unsigned short type, const void *daddr, | |
276 | const void *saddr, unsigned len); | |
277 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); | |
278 | int (*rebuild)(struct sk_buff *skb); | |
279 | #define HAVE_HEADER_CACHE | |
280 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh); | |
281 | void (*cache_update)(struct hh_cache *hh, | |
282 | const struct net_device *dev, | |
283 | const unsigned char *haddr); | |
284 | }; | |
285 | ||
1da177e4 LT |
286 | /* These flag bits are private to the generic network queueing |
287 | * layer, they may not be explicitly referenced by any other | |
288 | * code. | |
289 | */ | |
290 | ||
291 | enum netdev_state_t | |
292 | { | |
1da177e4 LT |
293 | __LINK_STATE_START, |
294 | __LINK_STATE_PRESENT, | |
1da177e4 | 295 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
296 | __LINK_STATE_LINKWATCH_PENDING, |
297 | __LINK_STATE_DORMANT, | |
1da177e4 LT |
298 | }; |
299 | ||
300 | ||
301 | /* | |
302 | * This structure holds at boot time configured netdevice settings. They | |
fe2918b0 | 303 | * are then used in the device probing. |
1da177e4 LT |
304 | */ |
305 | struct netdev_boot_setup { | |
306 | char name[IFNAMSIZ]; | |
307 | struct ifmap map; | |
308 | }; | |
309 | #define NETDEV_BOOT_SETUP_MAX 8 | |
310 | ||
20380731 | 311 | extern int __init netdev_boot_setup(char *str); |
1da177e4 | 312 | |
bea3348e SH |
313 | /* |
314 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
315 | */ | |
316 | struct napi_struct { | |
317 | /* The poll_list must only be managed by the entity which | |
318 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
319 | * whoever atomically sets that bit can add this napi_struct | |
320 | * to the per-cpu poll_list, and whoever clears that bit | |
321 | * can remove from the list right before clearing the bit. | |
322 | */ | |
323 | struct list_head poll_list; | |
324 | ||
325 | unsigned long state; | |
326 | int weight; | |
327 | int (*poll)(struct napi_struct *, int); | |
328 | #ifdef CONFIG_NETPOLL | |
329 | spinlock_t poll_lock; | |
330 | int poll_owner; | |
bea3348e | 331 | #endif |
4ae5544f HX |
332 | |
333 | unsigned int gro_count; | |
334 | ||
5d38a079 | 335 | struct net_device *dev; |
d565b0a1 HX |
336 | struct list_head dev_list; |
337 | struct sk_buff *gro_list; | |
5d38a079 | 338 | struct sk_buff *skb; |
bea3348e SH |
339 | }; |
340 | ||
341 | enum | |
342 | { | |
343 | NAPI_STATE_SCHED, /* Poll is scheduled */ | |
a0a46196 | 344 | NAPI_STATE_DISABLE, /* Disable pending */ |
7b363e44 | 345 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
bea3348e SH |
346 | }; |
347 | ||
d1c76af9 HX |
348 | enum { |
349 | GRO_MERGED, | |
350 | GRO_MERGED_FREE, | |
351 | GRO_HELD, | |
352 | GRO_NORMAL, | |
353 | GRO_DROP, | |
354 | }; | |
355 | ||
b3c97528 | 356 | extern void __napi_schedule(struct napi_struct *n); |
bea3348e | 357 | |
a0a46196 DM |
358 | static inline int napi_disable_pending(struct napi_struct *n) |
359 | { | |
360 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
361 | } | |
362 | ||
bea3348e SH |
363 | /** |
364 | * napi_schedule_prep - check if napi can be scheduled | |
365 | * @n: napi context | |
366 | * | |
367 | * Test if NAPI routine is already running, and if not mark | |
368 | * it as running. This is used as a condition variable | |
a0a46196 DM |
369 | * insure only one NAPI poll instance runs. We also make |
370 | * sure there is no pending NAPI disable. | |
bea3348e SH |
371 | */ |
372 | static inline int napi_schedule_prep(struct napi_struct *n) | |
373 | { | |
a0a46196 DM |
374 | return !napi_disable_pending(n) && |
375 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); | |
bea3348e SH |
376 | } |
377 | ||
378 | /** | |
379 | * napi_schedule - schedule NAPI poll | |
380 | * @n: napi context | |
381 | * | |
382 | * Schedule NAPI poll routine to be called if it is not already | |
383 | * running. | |
384 | */ | |
385 | static inline void napi_schedule(struct napi_struct *n) | |
386 | { | |
387 | if (napi_schedule_prep(n)) | |
388 | __napi_schedule(n); | |
389 | } | |
390 | ||
bfe13f54 RD |
391 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
392 | static inline int napi_reschedule(struct napi_struct *napi) | |
393 | { | |
394 | if (napi_schedule_prep(napi)) { | |
395 | __napi_schedule(napi); | |
396 | return 1; | |
397 | } | |
398 | return 0; | |
399 | } | |
400 | ||
bea3348e SH |
401 | /** |
402 | * napi_complete - NAPI processing complete | |
403 | * @n: napi context | |
404 | * | |
405 | * Mark NAPI processing as complete. | |
406 | */ | |
d565b0a1 HX |
407 | extern void __napi_complete(struct napi_struct *n); |
408 | extern void napi_complete(struct napi_struct *n); | |
bea3348e SH |
409 | |
410 | /** | |
411 | * napi_disable - prevent NAPI from scheduling | |
412 | * @n: napi context | |
413 | * | |
414 | * Stop NAPI from being scheduled on this context. | |
415 | * Waits till any outstanding processing completes. | |
416 | */ | |
417 | static inline void napi_disable(struct napi_struct *n) | |
418 | { | |
a0a46196 | 419 | set_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e | 420 | while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) |
43cc7380 | 421 | msleep(1); |
a0a46196 | 422 | clear_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e SH |
423 | } |
424 | ||
425 | /** | |
426 | * napi_enable - enable NAPI scheduling | |
427 | * @n: napi context | |
428 | * | |
429 | * Resume NAPI from being scheduled on this context. | |
430 | * Must be paired with napi_disable. | |
431 | */ | |
432 | static inline void napi_enable(struct napi_struct *n) | |
433 | { | |
434 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
435 | smp_mb__before_clear_bit(); | |
436 | clear_bit(NAPI_STATE_SCHED, &n->state); | |
437 | } | |
438 | ||
c264c3de SH |
439 | #ifdef CONFIG_SMP |
440 | /** | |
441 | * napi_synchronize - wait until NAPI is not running | |
442 | * @n: napi context | |
443 | * | |
444 | * Wait until NAPI is done being scheduled on this context. | |
445 | * Waits till any outstanding processing completes but | |
446 | * does not disable future activations. | |
447 | */ | |
448 | static inline void napi_synchronize(const struct napi_struct *n) | |
449 | { | |
450 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
451 | msleep(1); | |
452 | } | |
453 | #else | |
454 | # define napi_synchronize(n) barrier() | |
455 | #endif | |
456 | ||
79d16385 DM |
457 | enum netdev_queue_state_t |
458 | { | |
459 | __QUEUE_STATE_XOFF, | |
c3f26a26 | 460 | __QUEUE_STATE_FROZEN, |
79d16385 DM |
461 | }; |
462 | ||
bb949fbd | 463 | struct netdev_queue { |
6a321cb3 ED |
464 | /* |
465 | * read mostly part | |
466 | */ | |
bb949fbd | 467 | struct net_device *dev; |
b0e1e646 | 468 | struct Qdisc *qdisc; |
79d16385 | 469 | unsigned long state; |
b0e1e646 | 470 | struct Qdisc *qdisc_sleeping; |
6a321cb3 ED |
471 | /* |
472 | * write mostly part | |
473 | */ | |
474 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
475 | int xmit_lock_owner; | |
9d21493b ED |
476 | /* |
477 | * please use this field instead of dev->trans_start | |
478 | */ | |
479 | unsigned long trans_start; | |
7004bf25 ED |
480 | unsigned long tx_bytes; |
481 | unsigned long tx_packets; | |
482 | unsigned long tx_dropped; | |
e8a0464c | 483 | } ____cacheline_aligned_in_smp; |
bb949fbd | 484 | |
d314774c SH |
485 | |
486 | /* | |
487 | * This structure defines the management hooks for network devices. | |
00829823 SH |
488 | * The following hooks can be defined; unless noted otherwise, they are |
489 | * optional and can be filled with a null pointer. | |
d314774c SH |
490 | * |
491 | * int (*ndo_init)(struct net_device *dev); | |
492 | * This function is called once when network device is registered. | |
493 | * The network device can use this to any late stage initializaton | |
494 | * or semantic validattion. It can fail with an error code which will | |
495 | * be propogated back to register_netdev | |
496 | * | |
497 | * void (*ndo_uninit)(struct net_device *dev); | |
498 | * This function is called when device is unregistered or when registration | |
499 | * fails. It is not called if init fails. | |
500 | * | |
501 | * int (*ndo_open)(struct net_device *dev); | |
502 | * This function is called when network device transistions to the up | |
503 | * state. | |
504 | * | |
505 | * int (*ndo_stop)(struct net_device *dev); | |
506 | * This function is called when network device transistions to the down | |
507 | * state. | |
508 | * | |
985ebdb5 | 509 | * int (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev); |
00829823 SH |
510 | * Called when a packet needs to be transmitted. |
511 | * Must return NETDEV_TX_OK , NETDEV_TX_BUSY, or NETDEV_TX_LOCKED, | |
512 | * Required can not be NULL. | |
513 | * | |
514 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb); | |
515 | * Called to decide which queue to when device supports multiple | |
516 | * transmit queues. | |
517 | * | |
d314774c SH |
518 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
519 | * This function is called to allow device receiver to make | |
520 | * changes to configuration when multicast or promiscious is enabled. | |
521 | * | |
522 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
523 | * This function is called device changes address list filtering. | |
524 | * | |
525 | * void (*ndo_set_multicast_list)(struct net_device *dev); | |
526 | * This function is called when the multicast address list changes. | |
527 | * | |
528 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
529 | * This function is called when the Media Access Control address | |
37b607c5 | 530 | * needs to be changed. If this interface is not defined, the |
d314774c SH |
531 | * mac address can not be changed. |
532 | * | |
533 | * int (*ndo_validate_addr)(struct net_device *dev); | |
534 | * Test if Media Access Control address is valid for the device. | |
535 | * | |
536 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
537 | * Called when a user request an ioctl which can't be handled by | |
538 | * the generic interface code. If not defined ioctl's return | |
539 | * not supported error code. | |
540 | * | |
541 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); | |
542 | * Used to set network devices bus interface parameters. This interface | |
543 | * is retained for legacy reason, new devices should use the bus | |
544 | * interface (PCI) for low level management. | |
545 | * | |
546 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
547 | * Called when a user wants to change the Maximum Transfer Unit | |
548 | * of a device. If not defined, any request to change MTU will | |
549 | * will return an error. | |
550 | * | |
00829823 | 551 | * void (*ndo_tx_timeout)(struct net_device *dev); |
d314774c SH |
552 | * Callback uses when the transmitter has not made any progress |
553 | * for dev->watchdog ticks. | |
554 | * | |
555 | * struct net_device_stats* (*get_stats)(struct net_device *dev); | |
556 | * Called when a user wants to get the network device usage | |
557 | * statistics. If not defined, the counters in dev->stats will | |
558 | * be used. | |
559 | * | |
560 | * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp); | |
561 | * If device support VLAN receive accleration | |
562 | * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called | |
563 | * when vlan groups for the device changes. Note: grp is NULL | |
564 | * if no vlan's groups are being used. | |
565 | * | |
566 | * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid); | |
567 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
568 | * this function is called when a VLAN id is registered. | |
569 | * | |
570 | * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid); | |
571 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
572 | * this function is called when a VLAN id is unregistered. | |
573 | * | |
574 | * void (*ndo_poll_controller)(struct net_device *dev); | |
575 | */ | |
47fd5b83 | 576 | #define HAVE_NET_DEVICE_OPS |
d314774c SH |
577 | struct net_device_ops { |
578 | int (*ndo_init)(struct net_device *dev); | |
579 | void (*ndo_uninit)(struct net_device *dev); | |
580 | int (*ndo_open)(struct net_device *dev); | |
581 | int (*ndo_stop)(struct net_device *dev); | |
00829823 SH |
582 | int (*ndo_start_xmit) (struct sk_buff *skb, |
583 | struct net_device *dev); | |
584 | u16 (*ndo_select_queue)(struct net_device *dev, | |
585 | struct sk_buff *skb); | |
d314774c SH |
586 | #define HAVE_CHANGE_RX_FLAGS |
587 | void (*ndo_change_rx_flags)(struct net_device *dev, | |
588 | int flags); | |
589 | #define HAVE_SET_RX_MODE | |
590 | void (*ndo_set_rx_mode)(struct net_device *dev); | |
591 | #define HAVE_MULTICAST | |
592 | void (*ndo_set_multicast_list)(struct net_device *dev); | |
593 | #define HAVE_SET_MAC_ADDR | |
594 | int (*ndo_set_mac_address)(struct net_device *dev, | |
595 | void *addr); | |
596 | #define HAVE_VALIDATE_ADDR | |
597 | int (*ndo_validate_addr)(struct net_device *dev); | |
598 | #define HAVE_PRIVATE_IOCTL | |
599 | int (*ndo_do_ioctl)(struct net_device *dev, | |
600 | struct ifreq *ifr, int cmd); | |
601 | #define HAVE_SET_CONFIG | |
602 | int (*ndo_set_config)(struct net_device *dev, | |
603 | struct ifmap *map); | |
604 | #define HAVE_CHANGE_MTU | |
00829823 SH |
605 | int (*ndo_change_mtu)(struct net_device *dev, |
606 | int new_mtu); | |
607 | int (*ndo_neigh_setup)(struct net_device *dev, | |
608 | struct neigh_parms *); | |
d314774c SH |
609 | #define HAVE_TX_TIMEOUT |
610 | void (*ndo_tx_timeout) (struct net_device *dev); | |
611 | ||
612 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); | |
613 | ||
614 | void (*ndo_vlan_rx_register)(struct net_device *dev, | |
615 | struct vlan_group *grp); | |
616 | void (*ndo_vlan_rx_add_vid)(struct net_device *dev, | |
617 | unsigned short vid); | |
618 | void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, | |
619 | unsigned short vid); | |
620 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
621 | #define HAVE_NETDEV_POLL | |
622 | void (*ndo_poll_controller)(struct net_device *dev); | |
623 | #endif | |
4d288d57 YZ |
624 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
625 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, | |
626 | u16 xid, | |
627 | struct scatterlist *sgl, | |
628 | unsigned int sgc); | |
629 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
630 | u16 xid); | |
631 | #endif | |
d314774c SH |
632 | }; |
633 | ||
1da177e4 LT |
634 | /* |
635 | * The DEVICE structure. | |
636 | * Actually, this whole structure is a big mistake. It mixes I/O | |
637 | * data with strictly "high-level" data, and it has to know about | |
638 | * almost every data structure used in the INET module. | |
639 | * | |
640 | * FIXME: cleanup struct net_device such that network protocol info | |
641 | * moves out. | |
642 | */ | |
643 | ||
644 | struct net_device | |
645 | { | |
646 | ||
647 | /* | |
648 | * This is the first field of the "visible" part of this structure | |
649 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
650 | * the interface. | |
651 | */ | |
652 | char name[IFNAMSIZ]; | |
9356b8fc ED |
653 | /* device name hash chain */ |
654 | struct hlist_node name_hlist; | |
0b815a1a SH |
655 | /* snmp alias */ |
656 | char *ifalias; | |
1da177e4 LT |
657 | |
658 | /* | |
659 | * I/O specific fields | |
660 | * FIXME: Merge these and struct ifmap into one | |
661 | */ | |
662 | unsigned long mem_end; /* shared mem end */ | |
663 | unsigned long mem_start; /* shared mem start */ | |
664 | unsigned long base_addr; /* device I/O address */ | |
665 | unsigned int irq; /* device IRQ number */ | |
666 | ||
667 | /* | |
668 | * Some hardware also needs these fields, but they are not | |
669 | * part of the usual set specified in Space.c. | |
670 | */ | |
671 | ||
672 | unsigned char if_port; /* Selectable AUI, TP,..*/ | |
673 | unsigned char dma; /* DMA channel */ | |
674 | ||
675 | unsigned long state; | |
676 | ||
7562f876 | 677 | struct list_head dev_list; |
bea3348e | 678 | struct list_head napi_list; |
1da177e4 | 679 | |
9356b8fc ED |
680 | /* Net device features */ |
681 | unsigned long features; | |
682 | #define NETIF_F_SG 1 /* Scatter/gather IO. */ | |
d212f87b | 683 | #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ |
9356b8fc ED |
684 | #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ |
685 | #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ | |
d212f87b | 686 | #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ |
9356b8fc ED |
687 | #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ |
688 | #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ | |
689 | #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ | |
690 | #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ | |
691 | #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ | |
692 | #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ | |
37c3185a | 693 | #define NETIF_F_GSO 2048 /* Enable software GSO. */ |
e24eb521 CB |
694 | #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ |
695 | /* do not use LLTX in new drivers */ | |
ce286d32 | 696 | #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ |
d565b0a1 | 697 | #define NETIF_F_GRO 16384 /* Generic receive offload */ |
3ae7c0b2 | 698 | #define NETIF_F_LRO 32768 /* large receive offload */ |
7967168c | 699 | |
8dc92f7e | 700 | /* the GSO_MASK reserves bits 16 through 23 */ |
01d5b2fc | 701 | #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */ |
8dc92f7e | 702 | #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */ |
01d5b2fc | 703 | |
7967168c | 704 | /* Segmentation offload features */ |
289c79a4 | 705 | #define NETIF_F_GSO_SHIFT 16 |
43eb99c5 | 706 | #define NETIF_F_GSO_MASK 0x00ff0000 |
7967168c | 707 | #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) |
f83ef8c0 | 708 | #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) |
576a30eb | 709 | #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) |
f83ef8c0 HX |
710 | #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) |
711 | #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) | |
01d5b2fc | 712 | #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT) |
9356b8fc | 713 | |
78eb8877 HX |
714 | /* List of features with software fallbacks. */ |
715 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) | |
716 | ||
d212f87b | 717 | |
8648b305 | 718 | #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) |
d212f87b SH |
719 | #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) |
720 | #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) | |
721 | #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) | |
8648b305 | 722 | |
b63365a2 HX |
723 | /* |
724 | * If one device supports one of these features, then enable them | |
725 | * for all in netdev_increment_features. | |
726 | */ | |
727 | #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ | |
d314774c | 728 | NETIF_F_SG | NETIF_F_HIGHDMA | \ |
b63365a2 HX |
729 | NETIF_F_FRAGLIST) |
730 | ||
1da177e4 LT |
731 | /* Interface index. Unique device identifier */ |
732 | int ifindex; | |
733 | int iflink; | |
734 | ||
c45d286e | 735 | struct net_device_stats stats; |
1da177e4 | 736 | |
b86e0280 | 737 | #ifdef CONFIG_WIRELESS_EXT |
1da177e4 LT |
738 | /* List of functions to handle Wireless Extensions (instead of ioctl). |
739 | * See <net/iw_handler.h> for details. Jean II */ | |
740 | const struct iw_handler_def * wireless_handlers; | |
741 | /* Instance data managed by the core of Wireless Extensions. */ | |
742 | struct iw_public_data * wireless_data; | |
b86e0280 | 743 | #endif |
d314774c SH |
744 | /* Management operations */ |
745 | const struct net_device_ops *netdev_ops; | |
76fd8593 | 746 | const struct ethtool_ops *ethtool_ops; |
1da177e4 | 747 | |
3b04ddde SH |
748 | /* Hardware header description */ |
749 | const struct header_ops *header_ops; | |
750 | ||
b00055aa | 751 | unsigned int flags; /* interface flags (a la BSD) */ |
1da177e4 LT |
752 | unsigned short gflags; |
753 | unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */ | |
754 | unsigned short padded; /* How much padding added by alloc_netdev() */ | |
755 | ||
b00055aa SR |
756 | unsigned char operstate; /* RFC2863 operstate */ |
757 | unsigned char link_mode; /* mapping policy to operstate */ | |
758 | ||
1da177e4 LT |
759 | unsigned mtu; /* interface MTU value */ |
760 | unsigned short type; /* interface hardware type */ | |
761 | unsigned short hard_header_len; /* hardware hdr length */ | |
1da177e4 | 762 | |
f5184d26 JB |
763 | /* extra head- and tailroom the hardware may need, but not in all cases |
764 | * can this be guaranteed, especially tailroom. Some cases also use | |
765 | * LL_MAX_HEADER instead to allocate the skb. | |
766 | */ | |
767 | unsigned short needed_headroom; | |
768 | unsigned short needed_tailroom; | |
769 | ||
1da177e4 LT |
770 | struct net_device *master; /* Pointer to master device of a group, |
771 | * which this device is member of. | |
772 | */ | |
773 | ||
774 | /* Interface address info. */ | |
a6f9a705 | 775 | unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ |
1da177e4 LT |
776 | unsigned char addr_len; /* hardware address length */ |
777 | unsigned short dev_id; /* for shared network cards */ | |
778 | ||
ccffad25 JP |
779 | struct list_head uc_list; /* Secondary unicast mac |
780 | addresses */ | |
4417da66 PM |
781 | int uc_count; /* Number of installed ucasts */ |
782 | int uc_promisc; | |
ccffad25 | 783 | spinlock_t addr_list_lock; |
3fba5a8b | 784 | struct dev_addr_list *mc_list; /* Multicast mac addresses */ |
1da177e4 | 785 | int mc_count; /* Number of installed mcasts */ |
9d45abe1 WC |
786 | unsigned int promiscuity; |
787 | unsigned int allmulti; | |
1da177e4 | 788 | |
1da177e4 LT |
789 | |
790 | /* Protocol specific pointers */ | |
791 | ||
91da11f8 LB |
792 | #ifdef CONFIG_NET_DSA |
793 | void *dsa_ptr; /* dsa specific data */ | |
794 | #endif | |
1da177e4 | 795 | void *atalk_ptr; /* AppleTalk link */ |
fe2918b0 | 796 | void *ip_ptr; /* IPv4 specific data */ |
1da177e4 LT |
797 | void *dn_ptr; /* DECnet specific data */ |
798 | void *ip6_ptr; /* IPv6 specific data */ | |
799 | void *ec_ptr; /* Econet specific data */ | |
800 | void *ax25_ptr; /* AX.25 specific data */ | |
704232c2 JB |
801 | struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, |
802 | assign before registering */ | |
1da177e4 | 803 | |
9356b8fc ED |
804 | /* |
805 | * Cache line mostly used on receive path (including eth_type_trans()) | |
806 | */ | |
9356b8fc ED |
807 | unsigned long last_rx; /* Time of last Rx */ |
808 | /* Interface address info used in eth_type_trans() */ | |
f001fde5 JP |
809 | unsigned char *dev_addr; /* hw address, (before bcast |
810 | because most packets are | |
811 | unicast) */ | |
812 | ||
813 | struct list_head dev_addr_list; /* list of device hw addresses */ | |
9356b8fc ED |
814 | |
815 | unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ | |
1da177e4 | 816 | |
bb949fbd | 817 | struct netdev_queue rx_queue; |
e8a0464c DM |
818 | |
819 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; | |
fd2ea0a7 DM |
820 | |
821 | /* Number of TX queues allocated at alloc_netdev_mq() time */ | |
e8a0464c | 822 | unsigned int num_tx_queues; |
fd2ea0a7 DM |
823 | |
824 | /* Number of TX queues currently active in device */ | |
825 | unsigned int real_num_tx_queues; | |
826 | ||
1da177e4 | 827 | unsigned long tx_queue_len; /* Max frames per queue allowed */ |
c3f26a26 | 828 | spinlock_t tx_global_lock; |
9356b8fc ED |
829 | /* |
830 | * One part is mostly used on xmit path (device) | |
831 | */ | |
9356b8fc | 832 | /* These may be needed for future network-power-down code. */ |
9d21493b ED |
833 | |
834 | /* | |
835 | * trans_start here is expensive for high speed devices on SMP, | |
836 | * please use netdev_queue->trans_start instead. | |
837 | */ | |
9356b8fc ED |
838 | unsigned long trans_start; /* Time (in jiffies) of last Tx */ |
839 | ||
840 | int watchdog_timeo; /* used by dev_watchdog() */ | |
841 | struct timer_list watchdog_timer; | |
842 | ||
1da177e4 | 843 | /* Number of references to this device */ |
9356b8fc ED |
844 | atomic_t refcnt ____cacheline_aligned_in_smp; |
845 | ||
1da177e4 LT |
846 | /* delayed register/unregister */ |
847 | struct list_head todo_list; | |
1da177e4 LT |
848 | /* device index hash chain */ |
849 | struct hlist_node index_hlist; | |
850 | ||
572a103d HX |
851 | struct net_device *link_watch_next; |
852 | ||
1da177e4 LT |
853 | /* register/unregister state machine */ |
854 | enum { NETREG_UNINITIALIZED=0, | |
b17a7c17 | 855 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
856 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
857 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
858 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 859 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
1da177e4 LT |
860 | } reg_state; |
861 | ||
d314774c SH |
862 | /* Called from unregister, can be used to call free_netdev */ |
863 | void (*destructor)(struct net_device *dev); | |
1da177e4 | 864 | |
1da177e4 | 865 | #ifdef CONFIG_NETPOLL |
115c1d6e | 866 | struct netpoll_info *npinfo; |
1da177e4 | 867 | #endif |
eae792b7 | 868 | |
c346dca1 | 869 | #ifdef CONFIG_NET_NS |
4a1c5371 EB |
870 | /* Network namespace this network device is inside */ |
871 | struct net *nd_net; | |
c346dca1 | 872 | #endif |
4a1c5371 | 873 | |
4951704b DM |
874 | /* mid-layer private */ |
875 | void *ml_priv; | |
876 | ||
1da177e4 LT |
877 | /* bridge stuff */ |
878 | struct net_bridge_port *br_port; | |
b863ceb7 PM |
879 | /* macvlan */ |
880 | struct macvlan_port *macvlan_port; | |
eca9ebac PM |
881 | /* GARP */ |
882 | struct garp_port *garp_port; | |
1da177e4 | 883 | |
1da177e4 | 884 | /* class/net/name entry */ |
43cb76d9 | 885 | struct device dev; |
fe9925b5 SH |
886 | /* space for optional statistics and wireless sysfs groups */ |
887 | struct attribute_group *sysfs_groups[3]; | |
38f7b870 PM |
888 | |
889 | /* rtnetlink link ops */ | |
890 | const struct rtnl_link_ops *rtnl_link_ops; | |
f25f4e44 | 891 | |
289c79a4 PM |
892 | /* VLAN feature mask */ |
893 | unsigned long vlan_features; | |
894 | ||
82cc1a7a PWJ |
895 | /* for setting kernel sock attribute on TCP connection setup */ |
896 | #define GSO_MAX_SIZE 65536 | |
897 | unsigned int gso_max_size; | |
d314774c | 898 | |
7a6b6f51 | 899 | #ifdef CONFIG_DCB |
2f90b865 AD |
900 | /* Data Center Bridging netlink ops */ |
901 | struct dcbnl_rtnl_ops *dcbnl_ops; | |
902 | #endif | |
903 | ||
4d288d57 YZ |
904 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
905 | /* max exchange id for FCoE LRO by ddp */ | |
906 | unsigned int fcoe_ddp_xid; | |
907 | #endif | |
1da177e4 | 908 | }; |
43cb76d9 | 909 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 LT |
910 | |
911 | #define NETDEV_ALIGN 32 | |
1da177e4 | 912 | |
e8a0464c DM |
913 | static inline |
914 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
915 | unsigned int index) | |
916 | { | |
917 | return &dev->_tx[index]; | |
918 | } | |
919 | ||
920 | static inline void netdev_for_each_tx_queue(struct net_device *dev, | |
921 | void (*f)(struct net_device *, | |
922 | struct netdev_queue *, | |
923 | void *), | |
924 | void *arg) | |
925 | { | |
926 | unsigned int i; | |
927 | ||
928 | for (i = 0; i < dev->num_tx_queues; i++) | |
929 | f(dev, &dev->_tx[i], arg); | |
930 | } | |
931 | ||
c346dca1 YH |
932 | /* |
933 | * Net namespace inlines | |
934 | */ | |
935 | static inline | |
936 | struct net *dev_net(const struct net_device *dev) | |
937 | { | |
938 | #ifdef CONFIG_NET_NS | |
939 | return dev->nd_net; | |
940 | #else | |
941 | return &init_net; | |
942 | #endif | |
943 | } | |
944 | ||
945 | static inline | |
f5aa23fd | 946 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 YH |
947 | { |
948 | #ifdef CONFIG_NET_NS | |
f3005d7f DL |
949 | release_net(dev->nd_net); |
950 | dev->nd_net = hold_net(net); | |
c346dca1 YH |
951 | #endif |
952 | } | |
953 | ||
cf85d08f LB |
954 | static inline bool netdev_uses_dsa_tags(struct net_device *dev) |
955 | { | |
956 | #ifdef CONFIG_NET_DSA_TAG_DSA | |
957 | if (dev->dsa_ptr != NULL) | |
958 | return dsa_uses_dsa_tags(dev->dsa_ptr); | |
959 | #endif | |
960 | ||
961 | return 0; | |
962 | } | |
963 | ||
396138f0 LB |
964 | static inline bool netdev_uses_trailer_tags(struct net_device *dev) |
965 | { | |
966 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
967 | if (dev->dsa_ptr != NULL) | |
968 | return dsa_uses_trailer_tags(dev->dsa_ptr); | |
969 | #endif | |
970 | ||
971 | return 0; | |
972 | } | |
973 | ||
bea3348e SH |
974 | /** |
975 | * netdev_priv - access network device private data | |
976 | * @dev: network device | |
977 | * | |
978 | * Get network device private data | |
979 | */ | |
6472ce60 | 980 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 981 | { |
1ce8e7b5 | 982 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
1da177e4 LT |
983 | } |
984 | ||
1da177e4 LT |
985 | /* Set the sysfs physical device reference for the network logical device |
986 | * if set prior to registration will cause a symlink during initialization. | |
987 | */ | |
43cb76d9 | 988 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 989 | |
3b582cc1 SH |
990 | /** |
991 | * netif_napi_add - initialize a napi context | |
992 | * @dev: network device | |
993 | * @napi: napi context | |
994 | * @poll: polling function | |
995 | * @weight: default weight | |
996 | * | |
997 | * netif_napi_add() must be used to initialize a napi context prior to calling | |
998 | * *any* of the other napi related functions. | |
999 | */ | |
d565b0a1 HX |
1000 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
1001 | int (*poll)(struct napi_struct *, int), int weight); | |
bea3348e | 1002 | |
d8156534 AD |
1003 | /** |
1004 | * netif_napi_del - remove a napi context | |
1005 | * @napi: napi context | |
1006 | * | |
1007 | * netif_napi_del() removes a napi context from the network device napi list | |
1008 | */ | |
d565b0a1 HX |
1009 | void netif_napi_del(struct napi_struct *napi); |
1010 | ||
1011 | struct napi_gro_cb { | |
78a478d0 HX |
1012 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
1013 | void *frag0; | |
1014 | ||
7489594c HX |
1015 | /* Length of frag0. */ |
1016 | unsigned int frag0_len; | |
1017 | ||
86911732 HX |
1018 | /* This indicates where we are processing relative to skb->data. */ |
1019 | int data_offset; | |
1020 | ||
d565b0a1 HX |
1021 | /* This is non-zero if the packet may be of the same flow. */ |
1022 | int same_flow; | |
1023 | ||
1024 | /* This is non-zero if the packet cannot be merged with the new skb. */ | |
1025 | int flush; | |
1026 | ||
1027 | /* Number of segments aggregated. */ | |
1028 | int count; | |
5d38a079 HX |
1029 | |
1030 | /* Free the skb? */ | |
1031 | int free; | |
d565b0a1 HX |
1032 | }; |
1033 | ||
1034 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) | |
d8156534 | 1035 | |
1da177e4 | 1036 | struct packet_type { |
f2ccd8fa DM |
1037 | __be16 type; /* This is really htons(ether_type). */ |
1038 | struct net_device *dev; /* NULL is wildcarded here */ | |
1039 | int (*func) (struct sk_buff *, | |
1040 | struct net_device *, | |
1041 | struct packet_type *, | |
1042 | struct net_device *); | |
576a30eb HX |
1043 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
1044 | int features); | |
a430a43d | 1045 | int (*gso_send_check)(struct sk_buff *skb); |
d565b0a1 HX |
1046 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
1047 | struct sk_buff *skb); | |
1048 | int (*gro_complete)(struct sk_buff *skb); | |
1da177e4 LT |
1049 | void *af_packet_priv; |
1050 | struct list_head list; | |
1051 | }; | |
1052 | ||
1053 | #include <linux/interrupt.h> | |
1054 | #include <linux/notifier.h> | |
1055 | ||
1da177e4 LT |
1056 | extern rwlock_t dev_base_lock; /* Device list lock */ |
1057 | ||
7562f876 | 1058 | |
881d966b EB |
1059 | #define for_each_netdev(net, d) \ |
1060 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
1061 | #define for_each_netdev_safe(net, d, n) \ | |
1062 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
1063 | #define for_each_netdev_continue(net, d) \ | |
1064 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
1065 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) | |
7562f876 | 1066 | |
a050c33f DL |
1067 | static inline struct net_device *next_net_device(struct net_device *dev) |
1068 | { | |
1069 | struct list_head *lh; | |
1070 | struct net *net; | |
1071 | ||
c346dca1 | 1072 | net = dev_net(dev); |
a050c33f DL |
1073 | lh = dev->dev_list.next; |
1074 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
1075 | } | |
1076 | ||
1077 | static inline struct net_device *first_net_device(struct net *net) | |
1078 | { | |
1079 | return list_empty(&net->dev_base_head) ? NULL : | |
1080 | net_device_entry(net->dev_base_head.next); | |
1081 | } | |
7562f876 | 1082 | |
1da177e4 LT |
1083 | extern int netdev_boot_setup_check(struct net_device *dev); |
1084 | extern unsigned long netdev_boot_base(const char *prefix, int unit); | |
881d966b EB |
1085 | extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr); |
1086 | extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1087 | extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1da177e4 LT |
1088 | extern void dev_add_pack(struct packet_type *pt); |
1089 | extern void dev_remove_pack(struct packet_type *pt); | |
1090 | extern void __dev_remove_pack(struct packet_type *pt); | |
1091 | ||
881d966b | 1092 | extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags, |
1da177e4 | 1093 | unsigned short mask); |
881d966b EB |
1094 | extern struct net_device *dev_get_by_name(struct net *net, const char *name); |
1095 | extern struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
1da177e4 LT |
1096 | extern int dev_alloc_name(struct net_device *dev, const char *name); |
1097 | extern int dev_open(struct net_device *dev); | |
1098 | extern int dev_close(struct net_device *dev); | |
0187bdfb | 1099 | extern void dev_disable_lro(struct net_device *dev); |
1da177e4 LT |
1100 | extern int dev_queue_xmit(struct sk_buff *skb); |
1101 | extern int register_netdevice(struct net_device *dev); | |
22f8cde5 | 1102 | extern void unregister_netdevice(struct net_device *dev); |
1da177e4 LT |
1103 | extern void free_netdev(struct net_device *dev); |
1104 | extern void synchronize_net(void); | |
1105 | extern int register_netdevice_notifier(struct notifier_block *nb); | |
1106 | extern int unregister_netdevice_notifier(struct notifier_block *nb); | |
937f1ba5 | 1107 | extern int init_dummy_netdev(struct net_device *dev); |
9d40bbda | 1108 | extern void netdev_resync_ops(struct net_device *dev); |
937f1ba5 | 1109 | |
ad7379d4 | 1110 | extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
881d966b EB |
1111 | extern struct net_device *dev_get_by_index(struct net *net, int ifindex); |
1112 | extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
1da177e4 LT |
1113 | extern int dev_restart(struct net_device *dev); |
1114 | #ifdef CONFIG_NETPOLL_TRAP | |
1115 | extern int netpoll_trap(void); | |
1116 | #endif | |
86911732 HX |
1117 | extern int skb_gro_receive(struct sk_buff **head, |
1118 | struct sk_buff *skb); | |
78a478d0 | 1119 | extern void skb_gro_reset_offset(struct sk_buff *skb); |
86911732 HX |
1120 | |
1121 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) | |
1122 | { | |
1123 | return NAPI_GRO_CB(skb)->data_offset; | |
1124 | } | |
1125 | ||
1126 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) | |
1127 | { | |
1128 | return skb->len - NAPI_GRO_CB(skb)->data_offset; | |
1129 | } | |
1130 | ||
1131 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) | |
1132 | { | |
1133 | NAPI_GRO_CB(skb)->data_offset += len; | |
1134 | } | |
1135 | ||
a5b1cf28 HX |
1136 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
1137 | unsigned int offset) | |
86911732 | 1138 | { |
a5b1cf28 HX |
1139 | return NAPI_GRO_CB(skb)->frag0 + offset; |
1140 | } | |
78a478d0 | 1141 | |
a5b1cf28 HX |
1142 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
1143 | { | |
1144 | return NAPI_GRO_CB(skb)->frag0_len < hlen; | |
1145 | } | |
78a478d0 | 1146 | |
a5b1cf28 HX |
1147 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
1148 | unsigned int offset) | |
1149 | { | |
1150 | NAPI_GRO_CB(skb)->frag0 = NULL; | |
1151 | NAPI_GRO_CB(skb)->frag0_len = 0; | |
1152 | return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL; | |
86911732 | 1153 | } |
1da177e4 | 1154 | |
aa4b9f53 HX |
1155 | static inline void *skb_gro_mac_header(struct sk_buff *skb) |
1156 | { | |
78d3fd0b | 1157 | return NAPI_GRO_CB(skb)->frag0 ?: skb_mac_header(skb); |
aa4b9f53 HX |
1158 | } |
1159 | ||
36e7b1b8 HX |
1160 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
1161 | { | |
78d3fd0b HX |
1162 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
1163 | skb_network_offset(skb); | |
36e7b1b8 HX |
1164 | } |
1165 | ||
0c4e8581 SH |
1166 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
1167 | unsigned short type, | |
3b04ddde SH |
1168 | const void *daddr, const void *saddr, |
1169 | unsigned len) | |
0c4e8581 | 1170 | { |
f1ecfd5d | 1171 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 1172 | return 0; |
3b04ddde SH |
1173 | |
1174 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
1175 | } |
1176 | ||
b95cce35 SH |
1177 | static inline int dev_parse_header(const struct sk_buff *skb, |
1178 | unsigned char *haddr) | |
1179 | { | |
1180 | const struct net_device *dev = skb->dev; | |
1181 | ||
1b83336b | 1182 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 1183 | return 0; |
3b04ddde | 1184 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
1185 | } |
1186 | ||
1da177e4 LT |
1187 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
1188 | extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); | |
1189 | static inline int unregister_gifconf(unsigned int family) | |
1190 | { | |
1191 | return register_gifconf(family, NULL); | |
1192 | } | |
1193 | ||
1194 | /* | |
1195 | * Incoming packets are placed on per-cpu queues so that | |
1196 | * no locking is needed. | |
1197 | */ | |
1da177e4 LT |
1198 | struct softnet_data |
1199 | { | |
37437bb2 | 1200 | struct Qdisc *output_queue; |
1da177e4 LT |
1201 | struct sk_buff_head input_pkt_queue; |
1202 | struct list_head poll_list; | |
1da177e4 LT |
1203 | struct sk_buff *completion_queue; |
1204 | ||
bea3348e | 1205 | struct napi_struct backlog; |
1da177e4 LT |
1206 | }; |
1207 | ||
1208 | DECLARE_PER_CPU(struct softnet_data,softnet_data); | |
1209 | ||
1210 | #define HAVE_NETIF_QUEUE | |
1211 | ||
37437bb2 | 1212 | extern void __netif_schedule(struct Qdisc *q); |
1da177e4 | 1213 | |
86d804e1 | 1214 | static inline void netif_schedule_queue(struct netdev_queue *txq) |
1da177e4 | 1215 | { |
79d16385 | 1216 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1217 | __netif_schedule(txq->qdisc); |
86d804e1 DM |
1218 | } |
1219 | ||
fd2ea0a7 DM |
1220 | static inline void netif_tx_schedule_all(struct net_device *dev) |
1221 | { | |
1222 | unsigned int i; | |
1223 | ||
1224 | for (i = 0; i < dev->num_tx_queues; i++) | |
1225 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
1226 | } | |
1227 | ||
d29f749e DJ |
1228 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
1229 | { | |
1230 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1231 | } | |
1232 | ||
bea3348e SH |
1233 | /** |
1234 | * netif_start_queue - allow transmit | |
1235 | * @dev: network device | |
1236 | * | |
1237 | * Allow upper layers to call the device hard_start_xmit routine. | |
1238 | */ | |
1da177e4 LT |
1239 | static inline void netif_start_queue(struct net_device *dev) |
1240 | { | |
e8a0464c | 1241 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1242 | } |
1243 | ||
fd2ea0a7 DM |
1244 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
1245 | { | |
1246 | unsigned int i; | |
1247 | ||
1248 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1249 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1250 | netif_tx_start_queue(txq); | |
1251 | } | |
1252 | } | |
1253 | ||
79d16385 | 1254 | static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) |
1da177e4 LT |
1255 | { |
1256 | #ifdef CONFIG_NETPOLL_TRAP | |
5f286e11 | 1257 | if (netpoll_trap()) { |
79d16385 | 1258 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); |
1da177e4 | 1259 | return; |
5f286e11 | 1260 | } |
1da177e4 | 1261 | #endif |
79d16385 | 1262 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state)) |
37437bb2 | 1263 | __netif_schedule(dev_queue->qdisc); |
79d16385 DM |
1264 | } |
1265 | ||
d29f749e DJ |
1266 | /** |
1267 | * netif_wake_queue - restart transmit | |
1268 | * @dev: network device | |
1269 | * | |
1270 | * Allow upper layers to call the device hard_start_xmit routine. | |
1271 | * Used for flow control when transmit resources are available. | |
1272 | */ | |
79d16385 DM |
1273 | static inline void netif_wake_queue(struct net_device *dev) |
1274 | { | |
e8a0464c | 1275 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1276 | } |
1277 | ||
fd2ea0a7 DM |
1278 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
1279 | { | |
1280 | unsigned int i; | |
1281 | ||
1282 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1283 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1284 | netif_tx_wake_queue(txq); | |
1285 | } | |
1286 | } | |
1287 | ||
d29f749e DJ |
1288 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
1289 | { | |
1290 | set_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1291 | } | |
1292 | ||
bea3348e SH |
1293 | /** |
1294 | * netif_stop_queue - stop transmitted packets | |
1295 | * @dev: network device | |
1296 | * | |
1297 | * Stop upper layers calling the device hard_start_xmit routine. | |
1298 | * Used for flow control when transmit resources are unavailable. | |
1299 | */ | |
1da177e4 LT |
1300 | static inline void netif_stop_queue(struct net_device *dev) |
1301 | { | |
e8a0464c | 1302 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1303 | } |
1304 | ||
fd2ea0a7 DM |
1305 | static inline void netif_tx_stop_all_queues(struct net_device *dev) |
1306 | { | |
1307 | unsigned int i; | |
1308 | ||
1309 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1310 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1311 | netif_tx_stop_queue(txq); | |
1312 | } | |
1313 | } | |
1314 | ||
d29f749e DJ |
1315 | static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
1316 | { | |
1317 | return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1318 | } | |
1319 | ||
bea3348e SH |
1320 | /** |
1321 | * netif_queue_stopped - test if transmit queue is flowblocked | |
1322 | * @dev: network device | |
1323 | * | |
1324 | * Test if transmit queue on device is currently unable to send. | |
1325 | */ | |
1da177e4 LT |
1326 | static inline int netif_queue_stopped(const struct net_device *dev) |
1327 | { | |
e8a0464c | 1328 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1329 | } |
1330 | ||
c3f26a26 DM |
1331 | static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue) |
1332 | { | |
1333 | return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state); | |
1334 | } | |
1335 | ||
bea3348e SH |
1336 | /** |
1337 | * netif_running - test if up | |
1338 | * @dev: network device | |
1339 | * | |
1340 | * Test if the device has been brought up. | |
1341 | */ | |
1da177e4 LT |
1342 | static inline int netif_running(const struct net_device *dev) |
1343 | { | |
1344 | return test_bit(__LINK_STATE_START, &dev->state); | |
1345 | } | |
1346 | ||
f25f4e44 PWJ |
1347 | /* |
1348 | * Routines to manage the subqueues on a device. We only need start | |
1349 | * stop, and a check if it's stopped. All other device management is | |
1350 | * done at the overall netdevice level. | |
1351 | * Also test the device if we're multiqueue. | |
1352 | */ | |
bea3348e SH |
1353 | |
1354 | /** | |
1355 | * netif_start_subqueue - allow sending packets on subqueue | |
1356 | * @dev: network device | |
1357 | * @queue_index: sub queue index | |
1358 | * | |
1359 | * Start individual transmit queue of a device with multiple transmit queues. | |
1360 | */ | |
f25f4e44 PWJ |
1361 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
1362 | { | |
fd2ea0a7 DM |
1363 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
1364 | clear_bit(__QUEUE_STATE_XOFF, &txq->state); | |
f25f4e44 PWJ |
1365 | } |
1366 | ||
bea3348e SH |
1367 | /** |
1368 | * netif_stop_subqueue - stop sending packets on subqueue | |
1369 | * @dev: network device | |
1370 | * @queue_index: sub queue index | |
1371 | * | |
1372 | * Stop individual transmit queue of a device with multiple transmit queues. | |
1373 | */ | |
f25f4e44 PWJ |
1374 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
1375 | { | |
fd2ea0a7 | 1376 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1377 | #ifdef CONFIG_NETPOLL_TRAP |
1378 | if (netpoll_trap()) | |
1379 | return; | |
1380 | #endif | |
fd2ea0a7 | 1381 | set_bit(__QUEUE_STATE_XOFF, &txq->state); |
f25f4e44 PWJ |
1382 | } |
1383 | ||
bea3348e SH |
1384 | /** |
1385 | * netif_subqueue_stopped - test status of subqueue | |
1386 | * @dev: network device | |
1387 | * @queue_index: sub queue index | |
1388 | * | |
1389 | * Check individual transmit queue of a device with multiple transmit queues. | |
1390 | */ | |
668f895a | 1391 | static inline int __netif_subqueue_stopped(const struct net_device *dev, |
f25f4e44 PWJ |
1392 | u16 queue_index) |
1393 | { | |
fd2ea0a7 DM |
1394 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
1395 | return test_bit(__QUEUE_STATE_XOFF, &txq->state); | |
f25f4e44 PWJ |
1396 | } |
1397 | ||
668f895a PE |
1398 | static inline int netif_subqueue_stopped(const struct net_device *dev, |
1399 | struct sk_buff *skb) | |
1400 | { | |
1401 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
1402 | } | |
bea3348e SH |
1403 | |
1404 | /** | |
1405 | * netif_wake_subqueue - allow sending packets on subqueue | |
1406 | * @dev: network device | |
1407 | * @queue_index: sub queue index | |
1408 | * | |
1409 | * Resume individual transmit queue of a device with multiple transmit queues. | |
1410 | */ | |
f25f4e44 PWJ |
1411 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) |
1412 | { | |
fd2ea0a7 | 1413 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1414 | #ifdef CONFIG_NETPOLL_TRAP |
1415 | if (netpoll_trap()) | |
1416 | return; | |
1417 | #endif | |
fd2ea0a7 | 1418 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1419 | __netif_schedule(txq->qdisc); |
f25f4e44 PWJ |
1420 | } |
1421 | ||
bea3348e SH |
1422 | /** |
1423 | * netif_is_multiqueue - test if device has multiple transmit queues | |
1424 | * @dev: network device | |
1425 | * | |
1426 | * Check if device has multiple transmit queues | |
bea3348e | 1427 | */ |
f25f4e44 PWJ |
1428 | static inline int netif_is_multiqueue(const struct net_device *dev) |
1429 | { | |
09e83b5d | 1430 | return (dev->num_tx_queues > 1); |
f25f4e44 | 1431 | } |
1da177e4 LT |
1432 | |
1433 | /* Use this variant when it is known for sure that it | |
0ef47309 ML |
1434 | * is executing from hardware interrupt context or with hardware interrupts |
1435 | * disabled. | |
1da177e4 | 1436 | */ |
bea3348e | 1437 | extern void dev_kfree_skb_irq(struct sk_buff *skb); |
1da177e4 LT |
1438 | |
1439 | /* Use this variant in places where it could be invoked | |
0ef47309 ML |
1440 | * from either hardware interrupt or other context, with hardware interrupts |
1441 | * either disabled or enabled. | |
1da177e4 | 1442 | */ |
56079431 | 1443 | extern void dev_kfree_skb_any(struct sk_buff *skb); |
1da177e4 LT |
1444 | |
1445 | #define HAVE_NETIF_RX 1 | |
1446 | extern int netif_rx(struct sk_buff *skb); | |
1447 | extern int netif_rx_ni(struct sk_buff *skb); | |
1448 | #define HAVE_NETIF_RECEIVE_SKB 1 | |
1449 | extern int netif_receive_skb(struct sk_buff *skb); | |
d565b0a1 | 1450 | extern void napi_gro_flush(struct napi_struct *napi); |
96e93eab HX |
1451 | extern int dev_gro_receive(struct napi_struct *napi, |
1452 | struct sk_buff *skb); | |
5d0d9be8 | 1453 | extern int napi_skb_finish(int ret, struct sk_buff *skb); |
d565b0a1 HX |
1454 | extern int napi_gro_receive(struct napi_struct *napi, |
1455 | struct sk_buff *skb); | |
96e93eab HX |
1456 | extern void napi_reuse_skb(struct napi_struct *napi, |
1457 | struct sk_buff *skb); | |
76620aaf | 1458 | extern struct sk_buff * napi_get_frags(struct napi_struct *napi); |
5d0d9be8 HX |
1459 | extern int napi_frags_finish(struct napi_struct *napi, |
1460 | struct sk_buff *skb, int ret); | |
76620aaf HX |
1461 | extern struct sk_buff * napi_frags_skb(struct napi_struct *napi); |
1462 | extern int napi_gro_frags(struct napi_struct *napi); | |
1463 | ||
1464 | static inline void napi_free_frags(struct napi_struct *napi) | |
1465 | { | |
1466 | kfree_skb(napi->skb); | |
1467 | napi->skb = NULL; | |
1468 | } | |
1469 | ||
bc1d0411 | 1470 | extern void netif_nit_deliver(struct sk_buff *skb); |
c2373ee9 | 1471 | extern int dev_valid_name(const char *name); |
881d966b EB |
1472 | extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); |
1473 | extern int dev_ethtool(struct net *net, struct ifreq *); | |
1da177e4 LT |
1474 | extern unsigned dev_get_flags(const struct net_device *); |
1475 | extern int dev_change_flags(struct net_device *, unsigned); | |
cf04a4c7 | 1476 | extern int dev_change_name(struct net_device *, const char *); |
0b815a1a | 1477 | extern int dev_set_alias(struct net_device *, const char *, size_t); |
ce286d32 EB |
1478 | extern int dev_change_net_namespace(struct net_device *, |
1479 | struct net *, const char *); | |
1da177e4 LT |
1480 | extern int dev_set_mtu(struct net_device *, int); |
1481 | extern int dev_set_mac_address(struct net_device *, | |
1482 | struct sockaddr *); | |
f6a78bfc | 1483 | extern int dev_hard_start_xmit(struct sk_buff *skb, |
fd2ea0a7 DM |
1484 | struct net_device *dev, |
1485 | struct netdev_queue *txq); | |
1da177e4 | 1486 | |
20380731 | 1487 | extern int netdev_budget; |
1da177e4 LT |
1488 | |
1489 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
1490 | extern void netdev_run_todo(void); | |
1491 | ||
bea3348e SH |
1492 | /** |
1493 | * dev_put - release reference to device | |
1494 | * @dev: network device | |
1495 | * | |
9ef4429b | 1496 | * Release reference to device to allow it to be freed. |
bea3348e | 1497 | */ |
1da177e4 LT |
1498 | static inline void dev_put(struct net_device *dev) |
1499 | { | |
1500 | atomic_dec(&dev->refcnt); | |
1501 | } | |
1502 | ||
bea3348e SH |
1503 | /** |
1504 | * dev_hold - get reference to device | |
1505 | * @dev: network device | |
1506 | * | |
9ef4429b | 1507 | * Hold reference to device to keep it from being freed. |
bea3348e | 1508 | */ |
15333061 SH |
1509 | static inline void dev_hold(struct net_device *dev) |
1510 | { | |
1511 | atomic_inc(&dev->refcnt); | |
1512 | } | |
1da177e4 LT |
1513 | |
1514 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
1515 | * and _off may be called from IRQ context, but it is caller | |
1516 | * who is responsible for serialization of these calls. | |
b00055aa SR |
1517 | * |
1518 | * The name carrier is inappropriate, these functions should really be | |
1519 | * called netif_lowerlayer_*() because they represent the state of any | |
1520 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
1521 | */ |
1522 | ||
1523 | extern void linkwatch_fire_event(struct net_device *dev); | |
1524 | ||
bea3348e SH |
1525 | /** |
1526 | * netif_carrier_ok - test if carrier present | |
1527 | * @dev: network device | |
1528 | * | |
1529 | * Check if carrier is present on device | |
1530 | */ | |
1da177e4 LT |
1531 | static inline int netif_carrier_ok(const struct net_device *dev) |
1532 | { | |
1533 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
1534 | } | |
1535 | ||
9d21493b ED |
1536 | extern unsigned long dev_trans_start(struct net_device *dev); |
1537 | ||
1da177e4 LT |
1538 | extern void __netdev_watchdog_up(struct net_device *dev); |
1539 | ||
0a242efc | 1540 | extern void netif_carrier_on(struct net_device *dev); |
1da177e4 | 1541 | |
0a242efc | 1542 | extern void netif_carrier_off(struct net_device *dev); |
1da177e4 | 1543 | |
bea3348e SH |
1544 | /** |
1545 | * netif_dormant_on - mark device as dormant. | |
1546 | * @dev: network device | |
1547 | * | |
1548 | * Mark device as dormant (as per RFC2863). | |
1549 | * | |
1550 | * The dormant state indicates that the relevant interface is not | |
1551 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
1552 | * in a "pending" state, waiting for some external event. For "on- | |
1553 | * demand" interfaces, this new state identifies the situation where the | |
1554 | * interface is waiting for events to place it in the up state. | |
1555 | * | |
1556 | */ | |
b00055aa SR |
1557 | static inline void netif_dormant_on(struct net_device *dev) |
1558 | { | |
1559 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1560 | linkwatch_fire_event(dev); | |
1561 | } | |
1562 | ||
bea3348e SH |
1563 | /** |
1564 | * netif_dormant_off - set device as not dormant. | |
1565 | * @dev: network device | |
1566 | * | |
1567 | * Device is not in dormant state. | |
1568 | */ | |
b00055aa SR |
1569 | static inline void netif_dormant_off(struct net_device *dev) |
1570 | { | |
1571 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1572 | linkwatch_fire_event(dev); | |
1573 | } | |
1574 | ||
bea3348e SH |
1575 | /** |
1576 | * netif_dormant - test if carrier present | |
1577 | * @dev: network device | |
1578 | * | |
1579 | * Check if carrier is present on device | |
1580 | */ | |
b00055aa SR |
1581 | static inline int netif_dormant(const struct net_device *dev) |
1582 | { | |
1583 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
1584 | } | |
1585 | ||
1586 | ||
bea3348e SH |
1587 | /** |
1588 | * netif_oper_up - test if device is operational | |
1589 | * @dev: network device | |
1590 | * | |
1591 | * Check if carrier is operational | |
1592 | */ | |
b00055aa SR |
1593 | static inline int netif_oper_up(const struct net_device *dev) { |
1594 | return (dev->operstate == IF_OPER_UP || | |
1595 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
1596 | } | |
1597 | ||
bea3348e SH |
1598 | /** |
1599 | * netif_device_present - is device available or removed | |
1600 | * @dev: network device | |
1601 | * | |
1602 | * Check if device has not been removed from system. | |
1603 | */ | |
1da177e4 LT |
1604 | static inline int netif_device_present(struct net_device *dev) |
1605 | { | |
1606 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
1607 | } | |
1608 | ||
56079431 | 1609 | extern void netif_device_detach(struct net_device *dev); |
1da177e4 | 1610 | |
56079431 | 1611 | extern void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
1612 | |
1613 | /* | |
1614 | * Network interface message level settings | |
1615 | */ | |
1616 | #define HAVE_NETIF_MSG 1 | |
1617 | ||
1618 | enum { | |
1619 | NETIF_MSG_DRV = 0x0001, | |
1620 | NETIF_MSG_PROBE = 0x0002, | |
1621 | NETIF_MSG_LINK = 0x0004, | |
1622 | NETIF_MSG_TIMER = 0x0008, | |
1623 | NETIF_MSG_IFDOWN = 0x0010, | |
1624 | NETIF_MSG_IFUP = 0x0020, | |
1625 | NETIF_MSG_RX_ERR = 0x0040, | |
1626 | NETIF_MSG_TX_ERR = 0x0080, | |
1627 | NETIF_MSG_TX_QUEUED = 0x0100, | |
1628 | NETIF_MSG_INTR = 0x0200, | |
1629 | NETIF_MSG_TX_DONE = 0x0400, | |
1630 | NETIF_MSG_RX_STATUS = 0x0800, | |
1631 | NETIF_MSG_PKTDATA = 0x1000, | |
1632 | NETIF_MSG_HW = 0x2000, | |
1633 | NETIF_MSG_WOL = 0x4000, | |
1634 | }; | |
1635 | ||
1636 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
1637 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
1638 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
1639 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
1640 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
1641 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
1642 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
1643 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
1644 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
1645 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
1646 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
1647 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
1648 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
1649 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
1650 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
1651 | ||
1652 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
1653 | { | |
1654 | /* use default */ | |
1655 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
1656 | return default_msg_enable_bits; | |
1657 | if (debug_value == 0) /* no output */ | |
1658 | return 0; | |
1659 | /* set low N bits */ | |
1660 | return (1 << debug_value) - 1; | |
1661 | } | |
1662 | ||
c773e847 | 1663 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 1664 | { |
c773e847 DM |
1665 | spin_lock(&txq->_xmit_lock); |
1666 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
1667 | } |
1668 | ||
fd2ea0a7 DM |
1669 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
1670 | { | |
1671 | spin_lock_bh(&txq->_xmit_lock); | |
1672 | txq->xmit_lock_owner = smp_processor_id(); | |
1673 | } | |
1674 | ||
c3f26a26 DM |
1675 | static inline int __netif_tx_trylock(struct netdev_queue *txq) |
1676 | { | |
1677 | int ok = spin_trylock(&txq->_xmit_lock); | |
1678 | if (likely(ok)) | |
1679 | txq->xmit_lock_owner = smp_processor_id(); | |
1680 | return ok; | |
1681 | } | |
1682 | ||
1683 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
1684 | { | |
1685 | txq->xmit_lock_owner = -1; | |
1686 | spin_unlock(&txq->_xmit_lock); | |
1687 | } | |
1688 | ||
1689 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
1690 | { | |
1691 | txq->xmit_lock_owner = -1; | |
1692 | spin_unlock_bh(&txq->_xmit_lock); | |
1693 | } | |
1694 | ||
08baf561 ED |
1695 | static inline void txq_trans_update(struct netdev_queue *txq) |
1696 | { | |
1697 | if (txq->xmit_lock_owner != -1) | |
1698 | txq->trans_start = jiffies; | |
1699 | } | |
1700 | ||
d29f749e DJ |
1701 | /** |
1702 | * netif_tx_lock - grab network device transmit lock | |
1703 | * @dev: network device | |
d29f749e DJ |
1704 | * |
1705 | * Get network device transmit lock | |
1706 | */ | |
22dd7495 JHS |
1707 | static inline void netif_tx_lock(struct net_device *dev) |
1708 | { | |
e8a0464c | 1709 | unsigned int i; |
c3f26a26 | 1710 | int cpu; |
c773e847 | 1711 | |
c3f26a26 DM |
1712 | spin_lock(&dev->tx_global_lock); |
1713 | cpu = smp_processor_id(); | |
e8a0464c DM |
1714 | for (i = 0; i < dev->num_tx_queues; i++) { |
1715 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
1716 | |
1717 | /* We are the only thread of execution doing a | |
1718 | * freeze, but we have to grab the _xmit_lock in | |
1719 | * order to synchronize with threads which are in | |
1720 | * the ->hard_start_xmit() handler and already | |
1721 | * checked the frozen bit. | |
1722 | */ | |
e8a0464c | 1723 | __netif_tx_lock(txq, cpu); |
c3f26a26 DM |
1724 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
1725 | __netif_tx_unlock(txq); | |
e8a0464c | 1726 | } |
932ff279 HX |
1727 | } |
1728 | ||
1729 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
1730 | { | |
e8a0464c DM |
1731 | local_bh_disable(); |
1732 | netif_tx_lock(dev); | |
932ff279 HX |
1733 | } |
1734 | ||
932ff279 HX |
1735 | static inline void netif_tx_unlock(struct net_device *dev) |
1736 | { | |
e8a0464c DM |
1737 | unsigned int i; |
1738 | ||
1739 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1740 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c773e847 | 1741 | |
c3f26a26 DM |
1742 | /* No need to grab the _xmit_lock here. If the |
1743 | * queue is not stopped for another reason, we | |
1744 | * force a schedule. | |
1745 | */ | |
1746 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
1747 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) | |
1748 | __netif_schedule(txq->qdisc); | |
1749 | } | |
1750 | spin_unlock(&dev->tx_global_lock); | |
932ff279 HX |
1751 | } |
1752 | ||
1753 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
1754 | { | |
e8a0464c DM |
1755 | netif_tx_unlock(dev); |
1756 | local_bh_enable(); | |
932ff279 HX |
1757 | } |
1758 | ||
c773e847 | 1759 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 1760 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 1761 | __netif_tx_lock(txq, cpu); \ |
22dd7495 JHS |
1762 | } \ |
1763 | } | |
1764 | ||
c773e847 | 1765 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 1766 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 1767 | __netif_tx_unlock(txq); \ |
22dd7495 JHS |
1768 | } \ |
1769 | } | |
1770 | ||
1da177e4 LT |
1771 | static inline void netif_tx_disable(struct net_device *dev) |
1772 | { | |
fd2ea0a7 | 1773 | unsigned int i; |
c3f26a26 | 1774 | int cpu; |
fd2ea0a7 | 1775 | |
c3f26a26 DM |
1776 | local_bh_disable(); |
1777 | cpu = smp_processor_id(); | |
fd2ea0a7 DM |
1778 | for (i = 0; i < dev->num_tx_queues; i++) { |
1779 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
1780 | |
1781 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 1782 | netif_tx_stop_queue(txq); |
c3f26a26 | 1783 | __netif_tx_unlock(txq); |
fd2ea0a7 | 1784 | } |
c3f26a26 | 1785 | local_bh_enable(); |
1da177e4 LT |
1786 | } |
1787 | ||
e308a5d8 DM |
1788 | static inline void netif_addr_lock(struct net_device *dev) |
1789 | { | |
1790 | spin_lock(&dev->addr_list_lock); | |
1791 | } | |
1792 | ||
1793 | static inline void netif_addr_lock_bh(struct net_device *dev) | |
1794 | { | |
1795 | spin_lock_bh(&dev->addr_list_lock); | |
1796 | } | |
1797 | ||
1798 | static inline void netif_addr_unlock(struct net_device *dev) | |
1799 | { | |
1800 | spin_unlock(&dev->addr_list_lock); | |
1801 | } | |
1802 | ||
1803 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
1804 | { | |
1805 | spin_unlock_bh(&dev->addr_list_lock); | |
1806 | } | |
1807 | ||
f001fde5 JP |
1808 | /* |
1809 | * dev_addr_list walker. Should be used only for read access. Call with | |
1810 | * rcu_read_lock held. | |
1811 | */ | |
1812 | #define for_each_dev_addr(dev, ha) \ | |
1813 | list_for_each_entry_rcu(ha, &dev->dev_addr_list, list) | |
1814 | ||
1da177e4 LT |
1815 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
1816 | ||
1817 | extern void ether_setup(struct net_device *dev); | |
1818 | ||
1819 | /* Support for loadable net-drivers */ | |
f25f4e44 PWJ |
1820 | extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, |
1821 | void (*setup)(struct net_device *), | |
1822 | unsigned int queue_count); | |
1823 | #define alloc_netdev(sizeof_priv, name, setup) \ | |
1824 | alloc_netdev_mq(sizeof_priv, name, setup, 1) | |
1da177e4 LT |
1825 | extern int register_netdev(struct net_device *dev); |
1826 | extern void unregister_netdev(struct net_device *dev); | |
f001fde5 JP |
1827 | |
1828 | /* Functions used for device addresses handling */ | |
1829 | extern int dev_addr_add(struct net_device *dev, unsigned char *addr, | |
1830 | unsigned char addr_type); | |
1831 | extern int dev_addr_del(struct net_device *dev, unsigned char *addr, | |
1832 | unsigned char addr_type); | |
1833 | extern int dev_addr_add_multiple(struct net_device *to_dev, | |
1834 | struct net_device *from_dev, | |
1835 | unsigned char addr_type); | |
1836 | extern int dev_addr_del_multiple(struct net_device *to_dev, | |
1837 | struct net_device *from_dev, | |
1838 | unsigned char addr_type); | |
1839 | ||
4417da66 PM |
1840 | /* Functions used for secondary unicast and multicast support */ |
1841 | extern void dev_set_rx_mode(struct net_device *dev); | |
1842 | extern void __dev_set_rx_mode(struct net_device *dev); | |
ccffad25 JP |
1843 | extern int dev_unicast_delete(struct net_device *dev, void *addr); |
1844 | extern int dev_unicast_add(struct net_device *dev, void *addr); | |
e83a2ea8 CL |
1845 | extern int dev_unicast_sync(struct net_device *to, struct net_device *from); |
1846 | extern void dev_unicast_unsync(struct net_device *to, struct net_device *from); | |
1da177e4 LT |
1847 | extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all); |
1848 | extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly); | |
a0a400d7 PM |
1849 | extern int dev_mc_sync(struct net_device *to, struct net_device *from); |
1850 | extern void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
61cbc2fc PM |
1851 | extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all); |
1852 | extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly); | |
e83a2ea8 CL |
1853 | extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); |
1854 | extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); | |
dad9b335 WC |
1855 | extern int dev_set_promiscuity(struct net_device *dev, int inc); |
1856 | extern int dev_set_allmulti(struct net_device *dev, int inc); | |
1da177e4 | 1857 | extern void netdev_state_change(struct net_device *dev); |
c1da4ac7 | 1858 | extern void netdev_bonding_change(struct net_device *dev); |
d8a33ac4 | 1859 | extern void netdev_features_change(struct net_device *dev); |
1da177e4 | 1860 | /* Load a device via the kmod */ |
881d966b | 1861 | extern void dev_load(struct net *net, const char *name); |
1da177e4 | 1862 | extern void dev_mcast_init(void); |
eeda3fd6 SH |
1863 | extern const struct net_device_stats *dev_get_stats(struct net_device *dev); |
1864 | ||
1da177e4 LT |
1865 | extern int netdev_max_backlog; |
1866 | extern int weight_p; | |
1867 | extern int netdev_set_master(struct net_device *dev, struct net_device *master); | |
84fa7933 | 1868 | extern int skb_checksum_help(struct sk_buff *skb); |
576a30eb | 1869 | extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); |
fb286bb2 HX |
1870 | #ifdef CONFIG_BUG |
1871 | extern void netdev_rx_csum_fault(struct net_device *dev); | |
1872 | #else | |
1873 | static inline void netdev_rx_csum_fault(struct net_device *dev) | |
1874 | { | |
1875 | } | |
1876 | #endif | |
1da177e4 LT |
1877 | /* rx skb timestamps */ |
1878 | extern void net_enable_timestamp(void); | |
1879 | extern void net_disable_timestamp(void); | |
1880 | ||
20380731 ACM |
1881 | #ifdef CONFIG_PROC_FS |
1882 | extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); | |
1883 | extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); | |
1884 | extern void dev_seq_stop(struct seq_file *seq, void *v); | |
1885 | #endif | |
1886 | ||
b8a9787e JV |
1887 | extern int netdev_class_create_file(struct class_attribute *class_attr); |
1888 | extern void netdev_class_remove_file(struct class_attribute *class_attr); | |
1889 | ||
cf04a4c7 | 1890 | extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len); |
6579e57b | 1891 | |
20380731 ACM |
1892 | extern void linkwatch_run_queue(void); |
1893 | ||
b63365a2 HX |
1894 | unsigned long netdev_increment_features(unsigned long all, unsigned long one, |
1895 | unsigned long mask); | |
1896 | unsigned long netdev_fix_features(unsigned long features, const char *name); | |
7f353bf2 | 1897 | |
bcd76111 | 1898 | static inline int net_gso_ok(int features, int gso_type) |
576a30eb | 1899 | { |
bcd76111 | 1900 | int feature = gso_type << NETIF_F_GSO_SHIFT; |
d6b4991a | 1901 | return (features & feature) == feature; |
576a30eb HX |
1902 | } |
1903 | ||
bcd76111 HX |
1904 | static inline int skb_gso_ok(struct sk_buff *skb, int features) |
1905 | { | |
a430a43d | 1906 | return net_gso_ok(features, skb_shinfo(skb)->gso_type); |
bcd76111 HX |
1907 | } |
1908 | ||
7967168c HX |
1909 | static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) |
1910 | { | |
a430a43d HX |
1911 | return skb_is_gso(skb) && |
1912 | (!skb_gso_ok(skb, dev->features) || | |
1a881f27 HX |
1913 | (skb_shinfo(skb)->frag_list && |
1914 | !(dev->features & NETIF_F_FRAGLIST)) || | |
84fa7933 | 1915 | unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); |
7967168c HX |
1916 | } |
1917 | ||
82cc1a7a PWJ |
1918 | static inline void netif_set_gso_max_size(struct net_device *dev, |
1919 | unsigned int size) | |
1920 | { | |
1921 | dev->gso_max_size = size; | |
1922 | } | |
1923 | ||
5d4e039b JP |
1924 | static inline void skb_bond_set_mac_by_master(struct sk_buff *skb, |
1925 | struct net_device *master) | |
1926 | { | |
1927 | if (skb->pkt_type == PACKET_HOST) { | |
1928 | u16 *dest = (u16 *) eth_hdr(skb)->h_dest; | |
1929 | ||
1930 | memcpy(dest, master->dev_addr, ETH_ALEN); | |
1931 | } | |
1932 | } | |
1933 | ||
7ea49ed7 | 1934 | /* On bonding slaves other than the currently active slave, suppress |
f5b2b966 JV |
1935 | * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and |
1936 | * ARP on active-backup slaves with arp_validate enabled. | |
7ea49ed7 DM |
1937 | */ |
1938 | static inline int skb_bond_should_drop(struct sk_buff *skb) | |
1939 | { | |
1940 | struct net_device *dev = skb->dev; | |
1941 | struct net_device *master = dev->master; | |
1942 | ||
6cf3f41e JV |
1943 | if (master) { |
1944 | if (master->priv_flags & IFF_MASTER_ARPMON) | |
1945 | dev->last_rx = jiffies; | |
1946 | ||
5d4e039b JP |
1947 | if ((master->priv_flags & IFF_MASTER_ALB) && master->br_port) { |
1948 | /* Do address unmangle. The local destination address | |
1949 | * will be always the one master has. Provides the right | |
1950 | * functionality in a bridge. | |
1951 | */ | |
1952 | skb_bond_set_mac_by_master(skb, master); | |
1953 | } | |
1954 | ||
6cf3f41e JV |
1955 | if (dev->priv_flags & IFF_SLAVE_INACTIVE) { |
1956 | if ((dev->priv_flags & IFF_SLAVE_NEEDARP) && | |
f3a7c66b | 1957 | skb->protocol == __cpu_to_be16(ETH_P_ARP)) |
7ea49ed7 | 1958 | return 0; |
7ea49ed7 | 1959 | |
6cf3f41e JV |
1960 | if (master->priv_flags & IFF_MASTER_ALB) { |
1961 | if (skb->pkt_type != PACKET_BROADCAST && | |
1962 | skb->pkt_type != PACKET_MULTICAST) | |
1963 | return 0; | |
1964 | } | |
1965 | if (master->priv_flags & IFF_MASTER_8023AD && | |
f3a7c66b | 1966 | skb->protocol == __cpu_to_be16(ETH_P_SLOW)) |
6cf3f41e JV |
1967 | return 0; |
1968 | ||
1969 | return 1; | |
1970 | } | |
7ea49ed7 DM |
1971 | } |
1972 | return 0; | |
1973 | } | |
1974 | ||
505d4f73 | 1975 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 PM |
1976 | |
1977 | static inline int dev_ethtool_get_settings(struct net_device *dev, | |
1978 | struct ethtool_cmd *cmd) | |
1979 | { | |
1980 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings) | |
1981 | return -EOPNOTSUPP; | |
1982 | return dev->ethtool_ops->get_settings(dev, cmd); | |
1983 | } | |
1984 | ||
1985 | static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev) | |
1986 | { | |
1987 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum) | |
1988 | return 0; | |
1989 | return dev->ethtool_ops->get_rx_csum(dev); | |
1990 | } | |
1991 | ||
1992 | static inline u32 dev_ethtool_get_flags(struct net_device *dev) | |
1993 | { | |
1994 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_flags) | |
1995 | return 0; | |
1996 | return dev->ethtool_ops->get_flags(dev); | |
1997 | } | |
1da177e4 LT |
1998 | #endif /* __KERNEL__ */ |
1999 | ||
385a154c | 2000 | #endif /* _LINUX_NETDEVICE_H */ |