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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> |
1da177e4 LT |
35 | #include <asm/atomic.h> |
36 | #include <asm/cache.h> | |
37 | #include <asm/byteorder.h> | |
38 | ||
1da177e4 LT |
39 | #include <linux/device.h> |
40 | #include <linux/percpu.h> | |
db217334 | 41 | #include <linux/dmaengine.h> |
bea3348e | 42 | #include <linux/workqueue.h> |
1da177e4 | 43 | |
a050c33f | 44 | #include <net/net_namespace.h> |
cf85d08f | 45 | #include <net/dsa.h> |
a050c33f | 46 | |
1da177e4 LT |
47 | struct vlan_group; |
48 | struct ethtool_ops; | |
115c1d6e | 49 | struct netpoll_info; |
704232c2 JB |
50 | /* 802.11 specific */ |
51 | struct wireless_dev; | |
1da177e4 LT |
52 | /* source back-compat hooks */ |
53 | #define SET_ETHTOOL_OPS(netdev,ops) \ | |
54 | ( (netdev)->ethtool_ops = (ops) ) | |
55 | ||
56 | #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev | |
57 | functions are available. */ | |
58 | #define HAVE_FREE_NETDEV /* free_netdev() */ | |
59 | #define HAVE_NETDEV_PRIV /* netdev_priv() */ | |
60 | ||
61 | #define NET_XMIT_SUCCESS 0 | |
62 | #define NET_XMIT_DROP 1 /* skb dropped */ | |
63 | #define NET_XMIT_CN 2 /* congestion notification */ | |
64 | #define NET_XMIT_POLICED 3 /* skb is shot by police */ | |
378a2f09 | 65 | #define NET_XMIT_MASK 0xFFFF /* qdisc flags in net/sch_generic.h */ |
1da177e4 LT |
66 | |
67 | /* Backlog congestion levels */ | |
68 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
69 | #define NET_RX_DROP 1 /* packet dropped */ | |
70 | #define NET_RX_CN_LOW 2 /* storm alert, just in case */ | |
71 | #define NET_RX_CN_MOD 3 /* Storm on its way! */ | |
72 | #define NET_RX_CN_HIGH 4 /* The storm is here */ | |
73 | #define NET_RX_BAD 5 /* packet dropped due to kernel error */ | |
74 | ||
b9df3cb8 GR |
75 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
76 | * indicates that the device will soon be dropping packets, or already drops | |
77 | * some packets of the same priority; prompting us to send less aggressively. */ | |
78 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e)) | |
1da177e4 LT |
79 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
80 | ||
81 | #endif | |
82 | ||
83 | #define MAX_ADDR_LEN 32 /* Largest hardware address length */ | |
84 | ||
85 | /* Driver transmit return codes */ | |
86 | #define NETDEV_TX_OK 0 /* driver took care of packet */ | |
87 | #define NETDEV_TX_BUSY 1 /* driver tx path was busy*/ | |
88 | #define NETDEV_TX_LOCKED -1 /* driver tx lock was already taken */ | |
89 | ||
c88e6f51 AB |
90 | #ifdef __KERNEL__ |
91 | ||
1da177e4 LT |
92 | /* |
93 | * Compute the worst case header length according to the protocols | |
94 | * used. | |
95 | */ | |
96 | ||
8388e3da DM |
97 | #if defined(CONFIG_WLAN_80211) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) |
98 | # if defined(CONFIG_MAC80211_MESH) | |
99 | # define LL_MAX_HEADER 128 | |
100 | # else | |
101 | # define LL_MAX_HEADER 96 | |
102 | # endif | |
103 | #elif defined(CONFIG_TR) | |
104 | # define LL_MAX_HEADER 48 | |
1da177e4 | 105 | #else |
8388e3da | 106 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
107 | #endif |
108 | ||
e81c7359 DM |
109 | #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \ |
110 | !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ | |
111 | !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ | |
112 | !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) | |
1da177e4 LT |
113 | #define MAX_HEADER LL_MAX_HEADER |
114 | #else | |
115 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
116 | #endif | |
117 | ||
c88e6f51 AB |
118 | #endif /* __KERNEL__ */ |
119 | ||
1da177e4 LT |
120 | /* |
121 | * Network device statistics. Akin to the 2.0 ether stats but | |
122 | * with byte counters. | |
123 | */ | |
124 | ||
125 | struct net_device_stats | |
126 | { | |
127 | unsigned long rx_packets; /* total packets received */ | |
128 | unsigned long tx_packets; /* total packets transmitted */ | |
129 | unsigned long rx_bytes; /* total bytes received */ | |
130 | unsigned long tx_bytes; /* total bytes transmitted */ | |
131 | unsigned long rx_errors; /* bad packets received */ | |
132 | unsigned long tx_errors; /* packet transmit problems */ | |
133 | unsigned long rx_dropped; /* no space in linux buffers */ | |
134 | unsigned long tx_dropped; /* no space available in linux */ | |
135 | unsigned long multicast; /* multicast packets received */ | |
136 | unsigned long collisions; | |
137 | ||
138 | /* detailed rx_errors: */ | |
139 | unsigned long rx_length_errors; | |
140 | unsigned long rx_over_errors; /* receiver ring buff overflow */ | |
141 | unsigned long rx_crc_errors; /* recved pkt with crc error */ | |
142 | unsigned long rx_frame_errors; /* recv'd frame alignment error */ | |
143 | unsigned long rx_fifo_errors; /* recv'r fifo overrun */ | |
144 | unsigned long rx_missed_errors; /* receiver missed packet */ | |
145 | ||
146 | /* detailed tx_errors */ | |
147 | unsigned long tx_aborted_errors; | |
148 | unsigned long tx_carrier_errors; | |
149 | unsigned long tx_fifo_errors; | |
150 | unsigned long tx_heartbeat_errors; | |
151 | unsigned long tx_window_errors; | |
152 | ||
153 | /* for cslip etc */ | |
154 | unsigned long rx_compressed; | |
155 | unsigned long tx_compressed; | |
156 | }; | |
157 | ||
158 | ||
159 | /* Media selection options. */ | |
160 | enum { | |
161 | IF_PORT_UNKNOWN = 0, | |
162 | IF_PORT_10BASE2, | |
163 | IF_PORT_10BASET, | |
164 | IF_PORT_AUI, | |
165 | IF_PORT_100BASET, | |
166 | IF_PORT_100BASETX, | |
167 | IF_PORT_100BASEFX | |
168 | }; | |
169 | ||
170 | #ifdef __KERNEL__ | |
171 | ||
172 | #include <linux/cache.h> | |
173 | #include <linux/skbuff.h> | |
174 | ||
175 | struct neighbour; | |
176 | struct neigh_parms; | |
177 | struct sk_buff; | |
178 | ||
179 | struct netif_rx_stats | |
180 | { | |
181 | unsigned total; | |
182 | unsigned dropped; | |
183 | unsigned time_squeeze; | |
1da177e4 LT |
184 | unsigned cpu_collision; |
185 | }; | |
186 | ||
187 | DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat); | |
188 | ||
bf742482 PM |
189 | struct dev_addr_list |
190 | { | |
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 LT |
208 | |
209 | struct hh_cache | |
210 | { | |
211 | struct hh_cache *hh_next; /* Next entry */ | |
212 | atomic_t hh_refcnt; /* number of users */ | |
f0490980 ED |
213 | /* |
214 | * We want hh_output, hh_len, hh_lock and hh_data be a in a separate | |
215 | * cache line on SMP. | |
216 | * They are mostly read, but hh_refcnt may be changed quite frequently, | |
217 | * incurring cache line ping pongs. | |
218 | */ | |
219 | __be16 hh_type ____cacheline_aligned_in_smp; | |
220 | /* protocol identifier, f.e ETH_P_IP | |
1da177e4 LT |
221 | * NOTE: For VLANs, this will be the |
222 | * encapuslated type. --BLG | |
223 | */ | |
d5c42c0e | 224 | u16 hh_len; /* length of header */ |
1da177e4 | 225 | int (*hh_output)(struct sk_buff *skb); |
3644f0ce | 226 | seqlock_t hh_lock; |
1da177e4 LT |
227 | |
228 | /* cached hardware header; allow for machine alignment needs. */ | |
229 | #define HH_DATA_MOD 16 | |
230 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 231 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
232 | #define HH_DATA_ALIGN(__len) \ |
233 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
234 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
235 | }; | |
236 | ||
237 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. | |
238 | * Alternative is: | |
239 | * dev->hard_header_len ? (dev->hard_header_len + | |
240 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
241 | * | |
242 | * We could use other alignment values, but we must maintain the | |
243 | * relationship HH alignment <= LL alignment. | |
f5184d26 JB |
244 | * |
245 | * LL_ALLOCATED_SPACE also takes into account the tailroom the device | |
246 | * may need. | |
1da177e4 LT |
247 | */ |
248 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 249 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 250 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 JB |
251 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
252 | #define LL_ALLOCATED_SPACE(dev) \ | |
253 | ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
1da177e4 | 254 | |
3b04ddde SH |
255 | struct header_ops { |
256 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
257 | unsigned short type, const void *daddr, | |
258 | const void *saddr, unsigned len); | |
259 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); | |
260 | int (*rebuild)(struct sk_buff *skb); | |
261 | #define HAVE_HEADER_CACHE | |
262 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh); | |
263 | void (*cache_update)(struct hh_cache *hh, | |
264 | const struct net_device *dev, | |
265 | const unsigned char *haddr); | |
266 | }; | |
267 | ||
1da177e4 LT |
268 | /* These flag bits are private to the generic network queueing |
269 | * layer, they may not be explicitly referenced by any other | |
270 | * code. | |
271 | */ | |
272 | ||
273 | enum netdev_state_t | |
274 | { | |
1da177e4 LT |
275 | __LINK_STATE_START, |
276 | __LINK_STATE_PRESENT, | |
1da177e4 | 277 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
278 | __LINK_STATE_LINKWATCH_PENDING, |
279 | __LINK_STATE_DORMANT, | |
1da177e4 LT |
280 | }; |
281 | ||
282 | ||
283 | /* | |
284 | * This structure holds at boot time configured netdevice settings. They | |
285 | * are then used in the device probing. | |
286 | */ | |
287 | struct netdev_boot_setup { | |
288 | char name[IFNAMSIZ]; | |
289 | struct ifmap map; | |
290 | }; | |
291 | #define NETDEV_BOOT_SETUP_MAX 8 | |
292 | ||
20380731 | 293 | extern int __init netdev_boot_setup(char *str); |
1da177e4 | 294 | |
bea3348e SH |
295 | /* |
296 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
297 | */ | |
298 | struct napi_struct { | |
299 | /* The poll_list must only be managed by the entity which | |
300 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
301 | * whoever atomically sets that bit can add this napi_struct | |
302 | * to the per-cpu poll_list, and whoever clears that bit | |
303 | * can remove from the list right before clearing the bit. | |
304 | */ | |
305 | struct list_head poll_list; | |
306 | ||
307 | unsigned long state; | |
308 | int weight; | |
309 | int (*poll)(struct napi_struct *, int); | |
310 | #ifdef CONFIG_NETPOLL | |
311 | spinlock_t poll_lock; | |
312 | int poll_owner; | |
313 | struct net_device *dev; | |
314 | struct list_head dev_list; | |
315 | #endif | |
316 | }; | |
317 | ||
318 | enum | |
319 | { | |
320 | NAPI_STATE_SCHED, /* Poll is scheduled */ | |
a0a46196 | 321 | NAPI_STATE_DISABLE, /* Disable pending */ |
bea3348e SH |
322 | }; |
323 | ||
b3c97528 | 324 | extern void __napi_schedule(struct napi_struct *n); |
bea3348e | 325 | |
a0a46196 DM |
326 | static inline int napi_disable_pending(struct napi_struct *n) |
327 | { | |
328 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
329 | } | |
330 | ||
bea3348e SH |
331 | /** |
332 | * napi_schedule_prep - check if napi can be scheduled | |
333 | * @n: napi context | |
334 | * | |
335 | * Test if NAPI routine is already running, and if not mark | |
336 | * it as running. This is used as a condition variable | |
a0a46196 DM |
337 | * insure only one NAPI poll instance runs. We also make |
338 | * sure there is no pending NAPI disable. | |
bea3348e SH |
339 | */ |
340 | static inline int napi_schedule_prep(struct napi_struct *n) | |
341 | { | |
a0a46196 DM |
342 | return !napi_disable_pending(n) && |
343 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); | |
bea3348e SH |
344 | } |
345 | ||
346 | /** | |
347 | * napi_schedule - schedule NAPI poll | |
348 | * @n: napi context | |
349 | * | |
350 | * Schedule NAPI poll routine to be called if it is not already | |
351 | * running. | |
352 | */ | |
353 | static inline void napi_schedule(struct napi_struct *n) | |
354 | { | |
355 | if (napi_schedule_prep(n)) | |
356 | __napi_schedule(n); | |
357 | } | |
358 | ||
bfe13f54 RD |
359 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
360 | static inline int napi_reschedule(struct napi_struct *napi) | |
361 | { | |
362 | if (napi_schedule_prep(napi)) { | |
363 | __napi_schedule(napi); | |
364 | return 1; | |
365 | } | |
366 | return 0; | |
367 | } | |
368 | ||
bea3348e SH |
369 | /** |
370 | * napi_complete - NAPI processing complete | |
371 | * @n: napi context | |
372 | * | |
373 | * Mark NAPI processing as complete. | |
374 | */ | |
375 | static inline void __napi_complete(struct napi_struct *n) | |
376 | { | |
377 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
378 | list_del(&n->poll_list); | |
379 | smp_mb__before_clear_bit(); | |
380 | clear_bit(NAPI_STATE_SCHED, &n->state); | |
381 | } | |
382 | ||
383 | static inline void napi_complete(struct napi_struct *n) | |
384 | { | |
50fd4407 DM |
385 | unsigned long flags; |
386 | ||
387 | local_irq_save(flags); | |
bea3348e | 388 | __napi_complete(n); |
50fd4407 | 389 | local_irq_restore(flags); |
bea3348e SH |
390 | } |
391 | ||
392 | /** | |
393 | * napi_disable - prevent NAPI from scheduling | |
394 | * @n: napi context | |
395 | * | |
396 | * Stop NAPI from being scheduled on this context. | |
397 | * Waits till any outstanding processing completes. | |
398 | */ | |
399 | static inline void napi_disable(struct napi_struct *n) | |
400 | { | |
a0a46196 | 401 | set_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e | 402 | while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) |
43cc7380 | 403 | msleep(1); |
a0a46196 | 404 | clear_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e SH |
405 | } |
406 | ||
407 | /** | |
408 | * napi_enable - enable NAPI scheduling | |
409 | * @n: napi context | |
410 | * | |
411 | * Resume NAPI from being scheduled on this context. | |
412 | * Must be paired with napi_disable. | |
413 | */ | |
414 | static inline void napi_enable(struct napi_struct *n) | |
415 | { | |
416 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
417 | smp_mb__before_clear_bit(); | |
418 | clear_bit(NAPI_STATE_SCHED, &n->state); | |
419 | } | |
420 | ||
c264c3de SH |
421 | #ifdef CONFIG_SMP |
422 | /** | |
423 | * napi_synchronize - wait until NAPI is not running | |
424 | * @n: napi context | |
425 | * | |
426 | * Wait until NAPI is done being scheduled on this context. | |
427 | * Waits till any outstanding processing completes but | |
428 | * does not disable future activations. | |
429 | */ | |
430 | static inline void napi_synchronize(const struct napi_struct *n) | |
431 | { | |
432 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
433 | msleep(1); | |
434 | } | |
435 | #else | |
436 | # define napi_synchronize(n) barrier() | |
437 | #endif | |
438 | ||
79d16385 DM |
439 | enum netdev_queue_state_t |
440 | { | |
441 | __QUEUE_STATE_XOFF, | |
c3f26a26 | 442 | __QUEUE_STATE_FROZEN, |
79d16385 DM |
443 | }; |
444 | ||
bb949fbd DM |
445 | struct netdev_queue { |
446 | struct net_device *dev; | |
b0e1e646 | 447 | struct Qdisc *qdisc; |
79d16385 | 448 | unsigned long state; |
c773e847 DM |
449 | spinlock_t _xmit_lock; |
450 | int xmit_lock_owner; | |
b0e1e646 | 451 | struct Qdisc *qdisc_sleeping; |
e8a0464c | 452 | } ____cacheline_aligned_in_smp; |
bb949fbd | 453 | |
d314774c SH |
454 | |
455 | /* | |
456 | * This structure defines the management hooks for network devices. | |
00829823 SH |
457 | * The following hooks can be defined; unless noted otherwise, they are |
458 | * optional and can be filled with a null pointer. | |
d314774c SH |
459 | * |
460 | * int (*ndo_init)(struct net_device *dev); | |
461 | * This function is called once when network device is registered. | |
462 | * The network device can use this to any late stage initializaton | |
463 | * or semantic validattion. It can fail with an error code which will | |
464 | * be propogated back to register_netdev | |
465 | * | |
466 | * void (*ndo_uninit)(struct net_device *dev); | |
467 | * This function is called when device is unregistered or when registration | |
468 | * fails. It is not called if init fails. | |
469 | * | |
470 | * int (*ndo_open)(struct net_device *dev); | |
471 | * This function is called when network device transistions to the up | |
472 | * state. | |
473 | * | |
474 | * int (*ndo_stop)(struct net_device *dev); | |
475 | * This function is called when network device transistions to the down | |
476 | * state. | |
477 | * | |
00829823 SH |
478 | * int (*ndo_hard_start_xmit)(struct sk_buff *skb, struct net_device *dev); |
479 | * Called when a packet needs to be transmitted. | |
480 | * Must return NETDEV_TX_OK , NETDEV_TX_BUSY, or NETDEV_TX_LOCKED, | |
481 | * Required can not be NULL. | |
482 | * | |
483 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb); | |
484 | * Called to decide which queue to when device supports multiple | |
485 | * transmit queues. | |
486 | * | |
d314774c SH |
487 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
488 | * This function is called to allow device receiver to make | |
489 | * changes to configuration when multicast or promiscious is enabled. | |
490 | * | |
491 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
492 | * This function is called device changes address list filtering. | |
493 | * | |
494 | * void (*ndo_set_multicast_list)(struct net_device *dev); | |
495 | * This function is called when the multicast address list changes. | |
496 | * | |
497 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
498 | * This function is called when the Media Access Control address | |
499 | * needs to be changed. If not this interface is not defined, the | |
500 | * mac address can not be changed. | |
501 | * | |
502 | * int (*ndo_validate_addr)(struct net_device *dev); | |
503 | * Test if Media Access Control address is valid for the device. | |
504 | * | |
505 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
506 | * Called when a user request an ioctl which can't be handled by | |
507 | * the generic interface code. If not defined ioctl's return | |
508 | * not supported error code. | |
509 | * | |
510 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); | |
511 | * Used to set network devices bus interface parameters. This interface | |
512 | * is retained for legacy reason, new devices should use the bus | |
513 | * interface (PCI) for low level management. | |
514 | * | |
515 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
516 | * Called when a user wants to change the Maximum Transfer Unit | |
517 | * of a device. If not defined, any request to change MTU will | |
518 | * will return an error. | |
519 | * | |
00829823 | 520 | * void (*ndo_tx_timeout)(struct net_device *dev); |
d314774c SH |
521 | * Callback uses when the transmitter has not made any progress |
522 | * for dev->watchdog ticks. | |
523 | * | |
524 | * struct net_device_stats* (*get_stats)(struct net_device *dev); | |
525 | * Called when a user wants to get the network device usage | |
526 | * statistics. If not defined, the counters in dev->stats will | |
527 | * be used. | |
528 | * | |
529 | * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp); | |
530 | * If device support VLAN receive accleration | |
531 | * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called | |
532 | * when vlan groups for the device changes. Note: grp is NULL | |
533 | * if no vlan's groups are being used. | |
534 | * | |
535 | * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid); | |
536 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
537 | * this function is called when a VLAN id is registered. | |
538 | * | |
539 | * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid); | |
540 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
541 | * this function is called when a VLAN id is unregistered. | |
542 | * | |
543 | * void (*ndo_poll_controller)(struct net_device *dev); | |
544 | */ | |
545 | struct net_device_ops { | |
546 | int (*ndo_init)(struct net_device *dev); | |
547 | void (*ndo_uninit)(struct net_device *dev); | |
548 | int (*ndo_open)(struct net_device *dev); | |
549 | int (*ndo_stop)(struct net_device *dev); | |
00829823 SH |
550 | int (*ndo_start_xmit) (struct sk_buff *skb, |
551 | struct net_device *dev); | |
552 | u16 (*ndo_select_queue)(struct net_device *dev, | |
553 | struct sk_buff *skb); | |
d314774c SH |
554 | #define HAVE_CHANGE_RX_FLAGS |
555 | void (*ndo_change_rx_flags)(struct net_device *dev, | |
556 | int flags); | |
557 | #define HAVE_SET_RX_MODE | |
558 | void (*ndo_set_rx_mode)(struct net_device *dev); | |
559 | #define HAVE_MULTICAST | |
560 | void (*ndo_set_multicast_list)(struct net_device *dev); | |
561 | #define HAVE_SET_MAC_ADDR | |
562 | int (*ndo_set_mac_address)(struct net_device *dev, | |
563 | void *addr); | |
564 | #define HAVE_VALIDATE_ADDR | |
565 | int (*ndo_validate_addr)(struct net_device *dev); | |
566 | #define HAVE_PRIVATE_IOCTL | |
567 | int (*ndo_do_ioctl)(struct net_device *dev, | |
568 | struct ifreq *ifr, int cmd); | |
569 | #define HAVE_SET_CONFIG | |
570 | int (*ndo_set_config)(struct net_device *dev, | |
571 | struct ifmap *map); | |
572 | #define HAVE_CHANGE_MTU | |
00829823 SH |
573 | int (*ndo_change_mtu)(struct net_device *dev, |
574 | int new_mtu); | |
575 | int (*ndo_neigh_setup)(struct net_device *dev, | |
576 | struct neigh_parms *); | |
d314774c SH |
577 | #define HAVE_TX_TIMEOUT |
578 | void (*ndo_tx_timeout) (struct net_device *dev); | |
579 | ||
580 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); | |
581 | ||
582 | void (*ndo_vlan_rx_register)(struct net_device *dev, | |
583 | struct vlan_group *grp); | |
584 | void (*ndo_vlan_rx_add_vid)(struct net_device *dev, | |
585 | unsigned short vid); | |
586 | void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, | |
587 | unsigned short vid); | |
588 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
589 | #define HAVE_NETDEV_POLL | |
590 | void (*ndo_poll_controller)(struct net_device *dev); | |
591 | #endif | |
592 | }; | |
593 | ||
1da177e4 LT |
594 | /* |
595 | * The DEVICE structure. | |
596 | * Actually, this whole structure is a big mistake. It mixes I/O | |
597 | * data with strictly "high-level" data, and it has to know about | |
598 | * almost every data structure used in the INET module. | |
599 | * | |
600 | * FIXME: cleanup struct net_device such that network protocol info | |
601 | * moves out. | |
602 | */ | |
603 | ||
604 | struct net_device | |
605 | { | |
606 | ||
607 | /* | |
608 | * This is the first field of the "visible" part of this structure | |
609 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
610 | * the interface. | |
611 | */ | |
612 | char name[IFNAMSIZ]; | |
9356b8fc ED |
613 | /* device name hash chain */ |
614 | struct hlist_node name_hlist; | |
0b815a1a SH |
615 | /* snmp alias */ |
616 | char *ifalias; | |
1da177e4 LT |
617 | |
618 | /* | |
619 | * I/O specific fields | |
620 | * FIXME: Merge these and struct ifmap into one | |
621 | */ | |
622 | unsigned long mem_end; /* shared mem end */ | |
623 | unsigned long mem_start; /* shared mem start */ | |
624 | unsigned long base_addr; /* device I/O address */ | |
625 | unsigned int irq; /* device IRQ number */ | |
626 | ||
627 | /* | |
628 | * Some hardware also needs these fields, but they are not | |
629 | * part of the usual set specified in Space.c. | |
630 | */ | |
631 | ||
632 | unsigned char if_port; /* Selectable AUI, TP,..*/ | |
633 | unsigned char dma; /* DMA channel */ | |
634 | ||
635 | unsigned long state; | |
636 | ||
7562f876 | 637 | struct list_head dev_list; |
bea3348e SH |
638 | #ifdef CONFIG_NETPOLL |
639 | struct list_head napi_list; | |
640 | #endif | |
1da177e4 | 641 | |
9356b8fc ED |
642 | /* Net device features */ |
643 | unsigned long features; | |
644 | #define NETIF_F_SG 1 /* Scatter/gather IO. */ | |
d212f87b | 645 | #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ |
9356b8fc ED |
646 | #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ |
647 | #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ | |
d212f87b | 648 | #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ |
9356b8fc ED |
649 | #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ |
650 | #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ | |
651 | #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ | |
652 | #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ | |
653 | #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ | |
654 | #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ | |
37c3185a | 655 | #define NETIF_F_GSO 2048 /* Enable software GSO. */ |
e24eb521 CB |
656 | #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ |
657 | /* do not use LLTX in new drivers */ | |
ce286d32 | 658 | #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ |
3ae7c0b2 | 659 | #define NETIF_F_LRO 32768 /* large receive offload */ |
7967168c HX |
660 | |
661 | /* Segmentation offload features */ | |
289c79a4 PM |
662 | #define NETIF_F_GSO_SHIFT 16 |
663 | #define NETIF_F_GSO_MASK 0xffff0000 | |
7967168c | 664 | #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) |
f83ef8c0 | 665 | #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) |
576a30eb | 666 | #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) |
f83ef8c0 HX |
667 | #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) |
668 | #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) | |
9356b8fc | 669 | |
78eb8877 HX |
670 | /* List of features with software fallbacks. */ |
671 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) | |
672 | ||
d212f87b | 673 | |
8648b305 | 674 | #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) |
d212f87b SH |
675 | #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) |
676 | #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) | |
677 | #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) | |
8648b305 | 678 | |
b63365a2 HX |
679 | /* |
680 | * If one device supports one of these features, then enable them | |
681 | * for all in netdev_increment_features. | |
682 | */ | |
683 | #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ | |
d314774c | 684 | NETIF_F_SG | NETIF_F_HIGHDMA | \ |
b63365a2 HX |
685 | NETIF_F_FRAGLIST) |
686 | ||
1da177e4 LT |
687 | /* Interface index. Unique device identifier */ |
688 | int ifindex; | |
689 | int iflink; | |
690 | ||
c45d286e | 691 | struct net_device_stats stats; |
1da177e4 | 692 | |
b86e0280 | 693 | #ifdef CONFIG_WIRELESS_EXT |
1da177e4 LT |
694 | /* List of functions to handle Wireless Extensions (instead of ioctl). |
695 | * See <net/iw_handler.h> for details. Jean II */ | |
696 | const struct iw_handler_def * wireless_handlers; | |
697 | /* Instance data managed by the core of Wireless Extensions. */ | |
698 | struct iw_public_data * wireless_data; | |
b86e0280 | 699 | #endif |
d314774c SH |
700 | /* Management operations */ |
701 | const struct net_device_ops *netdev_ops; | |
76fd8593 | 702 | const struct ethtool_ops *ethtool_ops; |
1da177e4 | 703 | |
3b04ddde SH |
704 | /* Hardware header description */ |
705 | const struct header_ops *header_ops; | |
706 | ||
b00055aa | 707 | unsigned int flags; /* interface flags (a la BSD) */ |
1da177e4 LT |
708 | unsigned short gflags; |
709 | unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */ | |
710 | unsigned short padded; /* How much padding added by alloc_netdev() */ | |
711 | ||
b00055aa SR |
712 | unsigned char operstate; /* RFC2863 operstate */ |
713 | unsigned char link_mode; /* mapping policy to operstate */ | |
714 | ||
1da177e4 LT |
715 | unsigned mtu; /* interface MTU value */ |
716 | unsigned short type; /* interface hardware type */ | |
717 | unsigned short hard_header_len; /* hardware hdr length */ | |
1da177e4 | 718 | |
f5184d26 JB |
719 | /* extra head- and tailroom the hardware may need, but not in all cases |
720 | * can this be guaranteed, especially tailroom. Some cases also use | |
721 | * LL_MAX_HEADER instead to allocate the skb. | |
722 | */ | |
723 | unsigned short needed_headroom; | |
724 | unsigned short needed_tailroom; | |
725 | ||
1da177e4 LT |
726 | struct net_device *master; /* Pointer to master device of a group, |
727 | * which this device is member of. | |
728 | */ | |
729 | ||
730 | /* Interface address info. */ | |
a6f9a705 | 731 | unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ |
1da177e4 LT |
732 | unsigned char addr_len; /* hardware address length */ |
733 | unsigned short dev_id; /* for shared network cards */ | |
734 | ||
f1f28aa3 | 735 | spinlock_t addr_list_lock; |
4417da66 PM |
736 | struct dev_addr_list *uc_list; /* Secondary unicast mac addresses */ |
737 | int uc_count; /* Number of installed ucasts */ | |
738 | int uc_promisc; | |
3fba5a8b | 739 | struct dev_addr_list *mc_list; /* Multicast mac addresses */ |
1da177e4 | 740 | int mc_count; /* Number of installed mcasts */ |
9d45abe1 WC |
741 | unsigned int promiscuity; |
742 | unsigned int allmulti; | |
1da177e4 | 743 | |
1da177e4 LT |
744 | |
745 | /* Protocol specific pointers */ | |
746 | ||
91da11f8 LB |
747 | #ifdef CONFIG_NET_DSA |
748 | void *dsa_ptr; /* dsa specific data */ | |
749 | #endif | |
1da177e4 LT |
750 | void *atalk_ptr; /* AppleTalk link */ |
751 | void *ip_ptr; /* IPv4 specific data */ | |
752 | void *dn_ptr; /* DECnet specific data */ | |
753 | void *ip6_ptr; /* IPv6 specific data */ | |
754 | void *ec_ptr; /* Econet specific data */ | |
755 | void *ax25_ptr; /* AX.25 specific data */ | |
704232c2 JB |
756 | struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, |
757 | assign before registering */ | |
1da177e4 | 758 | |
9356b8fc ED |
759 | /* |
760 | * Cache line mostly used on receive path (including eth_type_trans()) | |
761 | */ | |
9356b8fc ED |
762 | unsigned long last_rx; /* Time of last Rx */ |
763 | /* Interface address info used in eth_type_trans() */ | |
764 | unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast | |
d314774c | 765 | because most packets are unicast) */ |
9356b8fc ED |
766 | |
767 | unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ | |
1da177e4 | 768 | |
bb949fbd | 769 | struct netdev_queue rx_queue; |
e8a0464c DM |
770 | |
771 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; | |
fd2ea0a7 DM |
772 | |
773 | /* Number of TX queues allocated at alloc_netdev_mq() time */ | |
e8a0464c | 774 | unsigned int num_tx_queues; |
fd2ea0a7 DM |
775 | |
776 | /* Number of TX queues currently active in device */ | |
777 | unsigned int real_num_tx_queues; | |
778 | ||
1da177e4 | 779 | unsigned long tx_queue_len; /* Max frames per queue allowed */ |
c3f26a26 | 780 | spinlock_t tx_global_lock; |
9356b8fc ED |
781 | /* |
782 | * One part is mostly used on xmit path (device) | |
783 | */ | |
9356b8fc | 784 | void *priv; /* pointer to private data */ |
9356b8fc ED |
785 | /* These may be needed for future network-power-down code. */ |
786 | unsigned long trans_start; /* Time (in jiffies) of last Tx */ | |
787 | ||
788 | int watchdog_timeo; /* used by dev_watchdog() */ | |
789 | struct timer_list watchdog_timer; | |
790 | ||
1da177e4 | 791 | /* Number of references to this device */ |
9356b8fc ED |
792 | atomic_t refcnt ____cacheline_aligned_in_smp; |
793 | ||
1da177e4 LT |
794 | /* delayed register/unregister */ |
795 | struct list_head todo_list; | |
1da177e4 LT |
796 | /* device index hash chain */ |
797 | struct hlist_node index_hlist; | |
798 | ||
572a103d HX |
799 | struct net_device *link_watch_next; |
800 | ||
1da177e4 LT |
801 | /* register/unregister state machine */ |
802 | enum { NETREG_UNINITIALIZED=0, | |
b17a7c17 | 803 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
804 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
805 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
806 | NETREG_RELEASED, /* called free_netdev */ | |
807 | } reg_state; | |
808 | ||
d314774c SH |
809 | /* Called from unregister, can be used to call free_netdev */ |
810 | void (*destructor)(struct net_device *dev); | |
1da177e4 | 811 | |
1da177e4 | 812 | #ifdef CONFIG_NETPOLL |
115c1d6e | 813 | struct netpoll_info *npinfo; |
1da177e4 | 814 | #endif |
eae792b7 | 815 | |
c346dca1 | 816 | #ifdef CONFIG_NET_NS |
4a1c5371 EB |
817 | /* Network namespace this network device is inside */ |
818 | struct net *nd_net; | |
c346dca1 | 819 | #endif |
4a1c5371 | 820 | |
4951704b DM |
821 | /* mid-layer private */ |
822 | void *ml_priv; | |
823 | ||
1da177e4 LT |
824 | /* bridge stuff */ |
825 | struct net_bridge_port *br_port; | |
b863ceb7 PM |
826 | /* macvlan */ |
827 | struct macvlan_port *macvlan_port; | |
eca9ebac PM |
828 | /* GARP */ |
829 | struct garp_port *garp_port; | |
1da177e4 | 830 | |
1da177e4 | 831 | /* class/net/name entry */ |
43cb76d9 | 832 | struct device dev; |
fe9925b5 SH |
833 | /* space for optional statistics and wireless sysfs groups */ |
834 | struct attribute_group *sysfs_groups[3]; | |
38f7b870 PM |
835 | |
836 | /* rtnetlink link ops */ | |
837 | const struct rtnl_link_ops *rtnl_link_ops; | |
f25f4e44 | 838 | |
289c79a4 PM |
839 | /* VLAN feature mask */ |
840 | unsigned long vlan_features; | |
841 | ||
82cc1a7a PWJ |
842 | /* for setting kernel sock attribute on TCP connection setup */ |
843 | #define GSO_MAX_SIZE 65536 | |
844 | unsigned int gso_max_size; | |
d314774c SH |
845 | |
846 | #ifdef CONFIG_COMPAT_NET_DEV_OPS | |
847 | struct { | |
848 | int (*init)(struct net_device *dev); | |
849 | void (*uninit)(struct net_device *dev); | |
850 | int (*open)(struct net_device *dev); | |
851 | int (*stop)(struct net_device *dev); | |
00829823 SH |
852 | int (*hard_start_xmit) (struct sk_buff *skb, |
853 | struct net_device *dev); | |
854 | u16 (*select_queue)(struct net_device *dev, | |
855 | struct sk_buff *skb); | |
d314774c SH |
856 | void (*change_rx_flags)(struct net_device *dev, |
857 | int flags); | |
858 | void (*set_rx_mode)(struct net_device *dev); | |
859 | void (*set_multicast_list)(struct net_device *dev); | |
860 | int (*set_mac_address)(struct net_device *dev, | |
861 | void *addr); | |
862 | int (*validate_addr)(struct net_device *dev); | |
863 | int (*do_ioctl)(struct net_device *dev, | |
864 | struct ifreq *ifr, int cmd); | |
865 | int (*set_config)(struct net_device *dev, | |
866 | struct ifmap *map); | |
867 | int (*change_mtu)(struct net_device *dev, int new_mtu); | |
00829823 SH |
868 | int (*neigh_setup)(struct net_device *dev, |
869 | struct neigh_parms *); | |
d314774c SH |
870 | void (*tx_timeout) (struct net_device *dev); |
871 | struct net_device_stats* (*get_stats)(struct net_device *dev); | |
872 | void (*vlan_rx_register)(struct net_device *dev, | |
873 | struct vlan_group *grp); | |
874 | void (*vlan_rx_add_vid)(struct net_device *dev, | |
875 | unsigned short vid); | |
876 | void (*vlan_rx_kill_vid)(struct net_device *dev, | |
877 | unsigned short vid); | |
878 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
879 | void (*poll_controller)(struct net_device *dev); | |
d314774c SH |
880 | #endif |
881 | }; | |
eeda3fd6 | 882 | #endif |
1da177e4 | 883 | }; |
43cb76d9 | 884 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 LT |
885 | |
886 | #define NETDEV_ALIGN 32 | |
887 | #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1) | |
888 | ||
e8a0464c DM |
889 | static inline |
890 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
891 | unsigned int index) | |
892 | { | |
893 | return &dev->_tx[index]; | |
894 | } | |
895 | ||
896 | static inline void netdev_for_each_tx_queue(struct net_device *dev, | |
897 | void (*f)(struct net_device *, | |
898 | struct netdev_queue *, | |
899 | void *), | |
900 | void *arg) | |
901 | { | |
902 | unsigned int i; | |
903 | ||
904 | for (i = 0; i < dev->num_tx_queues; i++) | |
905 | f(dev, &dev->_tx[i], arg); | |
906 | } | |
907 | ||
c346dca1 YH |
908 | /* |
909 | * Net namespace inlines | |
910 | */ | |
911 | static inline | |
912 | struct net *dev_net(const struct net_device *dev) | |
913 | { | |
914 | #ifdef CONFIG_NET_NS | |
915 | return dev->nd_net; | |
916 | #else | |
917 | return &init_net; | |
918 | #endif | |
919 | } | |
920 | ||
921 | static inline | |
f5aa23fd | 922 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 YH |
923 | { |
924 | #ifdef CONFIG_NET_NS | |
f3005d7f DL |
925 | release_net(dev->nd_net); |
926 | dev->nd_net = hold_net(net); | |
c346dca1 YH |
927 | #endif |
928 | } | |
929 | ||
cf85d08f LB |
930 | static inline bool netdev_uses_dsa_tags(struct net_device *dev) |
931 | { | |
932 | #ifdef CONFIG_NET_DSA_TAG_DSA | |
933 | if (dev->dsa_ptr != NULL) | |
934 | return dsa_uses_dsa_tags(dev->dsa_ptr); | |
935 | #endif | |
936 | ||
937 | return 0; | |
938 | } | |
939 | ||
396138f0 LB |
940 | static inline bool netdev_uses_trailer_tags(struct net_device *dev) |
941 | { | |
942 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
943 | if (dev->dsa_ptr != NULL) | |
944 | return dsa_uses_trailer_tags(dev->dsa_ptr); | |
945 | #endif | |
946 | ||
947 | return 0; | |
948 | } | |
949 | ||
bea3348e SH |
950 | /** |
951 | * netdev_priv - access network device private data | |
952 | * @dev: network device | |
953 | * | |
954 | * Get network device private data | |
955 | */ | |
6472ce60 | 956 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 957 | { |
e3c50d5d DM |
958 | return (char *)dev + ((sizeof(struct net_device) |
959 | + NETDEV_ALIGN_CONST) | |
960 | & ~NETDEV_ALIGN_CONST); | |
1da177e4 LT |
961 | } |
962 | ||
1da177e4 LT |
963 | /* Set the sysfs physical device reference for the network logical device |
964 | * if set prior to registration will cause a symlink during initialization. | |
965 | */ | |
43cb76d9 | 966 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 967 | |
3b582cc1 SH |
968 | /** |
969 | * netif_napi_add - initialize a napi context | |
970 | * @dev: network device | |
971 | * @napi: napi context | |
972 | * @poll: polling function | |
973 | * @weight: default weight | |
974 | * | |
975 | * netif_napi_add() must be used to initialize a napi context prior to calling | |
976 | * *any* of the other napi related functions. | |
977 | */ | |
bea3348e SH |
978 | static inline void netif_napi_add(struct net_device *dev, |
979 | struct napi_struct *napi, | |
980 | int (*poll)(struct napi_struct *, int), | |
981 | int weight) | |
982 | { | |
983 | INIT_LIST_HEAD(&napi->poll_list); | |
984 | napi->poll = poll; | |
985 | napi->weight = weight; | |
986 | #ifdef CONFIG_NETPOLL | |
987 | napi->dev = dev; | |
988 | list_add(&napi->dev_list, &dev->napi_list); | |
989 | spin_lock_init(&napi->poll_lock); | |
990 | napi->poll_owner = -1; | |
991 | #endif | |
992 | set_bit(NAPI_STATE_SCHED, &napi->state); | |
993 | } | |
994 | ||
d8156534 AD |
995 | /** |
996 | * netif_napi_del - remove a napi context | |
997 | * @napi: napi context | |
998 | * | |
999 | * netif_napi_del() removes a napi context from the network device napi list | |
1000 | */ | |
1001 | static inline void netif_napi_del(struct napi_struct *napi) | |
1002 | { | |
1003 | #ifdef CONFIG_NETPOLL | |
1004 | list_del(&napi->dev_list); | |
1005 | #endif | |
1006 | } | |
1007 | ||
1da177e4 | 1008 | struct packet_type { |
f2ccd8fa DM |
1009 | __be16 type; /* This is really htons(ether_type). */ |
1010 | struct net_device *dev; /* NULL is wildcarded here */ | |
1011 | int (*func) (struct sk_buff *, | |
1012 | struct net_device *, | |
1013 | struct packet_type *, | |
1014 | struct net_device *); | |
576a30eb HX |
1015 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
1016 | int features); | |
a430a43d | 1017 | int (*gso_send_check)(struct sk_buff *skb); |
1da177e4 LT |
1018 | void *af_packet_priv; |
1019 | struct list_head list; | |
1020 | }; | |
1021 | ||
1022 | #include <linux/interrupt.h> | |
1023 | #include <linux/notifier.h> | |
1024 | ||
1da177e4 LT |
1025 | extern rwlock_t dev_base_lock; /* Device list lock */ |
1026 | ||
7562f876 | 1027 | |
881d966b EB |
1028 | #define for_each_netdev(net, d) \ |
1029 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
1030 | #define for_each_netdev_safe(net, d, n) \ | |
1031 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
1032 | #define for_each_netdev_continue(net, d) \ | |
1033 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
1034 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) | |
7562f876 | 1035 | |
a050c33f DL |
1036 | static inline struct net_device *next_net_device(struct net_device *dev) |
1037 | { | |
1038 | struct list_head *lh; | |
1039 | struct net *net; | |
1040 | ||
c346dca1 | 1041 | net = dev_net(dev); |
a050c33f DL |
1042 | lh = dev->dev_list.next; |
1043 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
1044 | } | |
1045 | ||
1046 | static inline struct net_device *first_net_device(struct net *net) | |
1047 | { | |
1048 | return list_empty(&net->dev_base_head) ? NULL : | |
1049 | net_device_entry(net->dev_base_head.next); | |
1050 | } | |
7562f876 | 1051 | |
1da177e4 LT |
1052 | extern int netdev_boot_setup_check(struct net_device *dev); |
1053 | extern unsigned long netdev_boot_base(const char *prefix, int unit); | |
881d966b EB |
1054 | extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr); |
1055 | extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1056 | extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1da177e4 LT |
1057 | extern void dev_add_pack(struct packet_type *pt); |
1058 | extern void dev_remove_pack(struct packet_type *pt); | |
1059 | extern void __dev_remove_pack(struct packet_type *pt); | |
1060 | ||
881d966b | 1061 | extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags, |
1da177e4 | 1062 | unsigned short mask); |
881d966b EB |
1063 | extern struct net_device *dev_get_by_name(struct net *net, const char *name); |
1064 | extern struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
1da177e4 LT |
1065 | extern int dev_alloc_name(struct net_device *dev, const char *name); |
1066 | extern int dev_open(struct net_device *dev); | |
1067 | extern int dev_close(struct net_device *dev); | |
0187bdfb | 1068 | extern void dev_disable_lro(struct net_device *dev); |
1da177e4 LT |
1069 | extern int dev_queue_xmit(struct sk_buff *skb); |
1070 | extern int register_netdevice(struct net_device *dev); | |
22f8cde5 | 1071 | extern void unregister_netdevice(struct net_device *dev); |
1da177e4 LT |
1072 | extern void free_netdev(struct net_device *dev); |
1073 | extern void synchronize_net(void); | |
1074 | extern int register_netdevice_notifier(struct notifier_block *nb); | |
1075 | extern int unregister_netdevice_notifier(struct notifier_block *nb); | |
ad7379d4 | 1076 | extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
881d966b EB |
1077 | extern struct net_device *dev_get_by_index(struct net *net, int ifindex); |
1078 | extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
1da177e4 LT |
1079 | extern int dev_restart(struct net_device *dev); |
1080 | #ifdef CONFIG_NETPOLL_TRAP | |
1081 | extern int netpoll_trap(void); | |
1082 | #endif | |
1083 | ||
0c4e8581 SH |
1084 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
1085 | unsigned short type, | |
3b04ddde SH |
1086 | const void *daddr, const void *saddr, |
1087 | unsigned len) | |
0c4e8581 | 1088 | { |
f1ecfd5d | 1089 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 1090 | return 0; |
3b04ddde SH |
1091 | |
1092 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
1093 | } |
1094 | ||
b95cce35 SH |
1095 | static inline int dev_parse_header(const struct sk_buff *skb, |
1096 | unsigned char *haddr) | |
1097 | { | |
1098 | const struct net_device *dev = skb->dev; | |
1099 | ||
1b83336b | 1100 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 1101 | return 0; |
3b04ddde | 1102 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
1103 | } |
1104 | ||
1da177e4 LT |
1105 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
1106 | extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); | |
1107 | static inline int unregister_gifconf(unsigned int family) | |
1108 | { | |
1109 | return register_gifconf(family, NULL); | |
1110 | } | |
1111 | ||
1112 | /* | |
1113 | * Incoming packets are placed on per-cpu queues so that | |
1114 | * no locking is needed. | |
1115 | */ | |
1da177e4 LT |
1116 | struct softnet_data |
1117 | { | |
37437bb2 | 1118 | struct Qdisc *output_queue; |
1da177e4 LT |
1119 | struct sk_buff_head input_pkt_queue; |
1120 | struct list_head poll_list; | |
1da177e4 LT |
1121 | struct sk_buff *completion_queue; |
1122 | ||
bea3348e | 1123 | struct napi_struct backlog; |
db217334 CL |
1124 | #ifdef CONFIG_NET_DMA |
1125 | struct dma_chan *net_dma; | |
1126 | #endif | |
1da177e4 LT |
1127 | }; |
1128 | ||
1129 | DECLARE_PER_CPU(struct softnet_data,softnet_data); | |
1130 | ||
1131 | #define HAVE_NETIF_QUEUE | |
1132 | ||
37437bb2 | 1133 | extern void __netif_schedule(struct Qdisc *q); |
1da177e4 | 1134 | |
86d804e1 | 1135 | static inline void netif_schedule_queue(struct netdev_queue *txq) |
1da177e4 | 1136 | { |
79d16385 | 1137 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1138 | __netif_schedule(txq->qdisc); |
86d804e1 DM |
1139 | } |
1140 | ||
fd2ea0a7 DM |
1141 | static inline void netif_tx_schedule_all(struct net_device *dev) |
1142 | { | |
1143 | unsigned int i; | |
1144 | ||
1145 | for (i = 0; i < dev->num_tx_queues; i++) | |
1146 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
1147 | } | |
1148 | ||
d29f749e DJ |
1149 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
1150 | { | |
1151 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1152 | } | |
1153 | ||
bea3348e SH |
1154 | /** |
1155 | * netif_start_queue - allow transmit | |
1156 | * @dev: network device | |
1157 | * | |
1158 | * Allow upper layers to call the device hard_start_xmit routine. | |
1159 | */ | |
1da177e4 LT |
1160 | static inline void netif_start_queue(struct net_device *dev) |
1161 | { | |
e8a0464c | 1162 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1163 | } |
1164 | ||
fd2ea0a7 DM |
1165 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
1166 | { | |
1167 | unsigned int i; | |
1168 | ||
1169 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1170 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1171 | netif_tx_start_queue(txq); | |
1172 | } | |
1173 | } | |
1174 | ||
79d16385 | 1175 | static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) |
1da177e4 LT |
1176 | { |
1177 | #ifdef CONFIG_NETPOLL_TRAP | |
5f286e11 | 1178 | if (netpoll_trap()) { |
79d16385 | 1179 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); |
1da177e4 | 1180 | return; |
5f286e11 | 1181 | } |
1da177e4 | 1182 | #endif |
79d16385 | 1183 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state)) |
37437bb2 | 1184 | __netif_schedule(dev_queue->qdisc); |
79d16385 DM |
1185 | } |
1186 | ||
d29f749e DJ |
1187 | /** |
1188 | * netif_wake_queue - restart transmit | |
1189 | * @dev: network device | |
1190 | * | |
1191 | * Allow upper layers to call the device hard_start_xmit routine. | |
1192 | * Used for flow control when transmit resources are available. | |
1193 | */ | |
79d16385 DM |
1194 | static inline void netif_wake_queue(struct net_device *dev) |
1195 | { | |
e8a0464c | 1196 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1197 | } |
1198 | ||
fd2ea0a7 DM |
1199 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
1200 | { | |
1201 | unsigned int i; | |
1202 | ||
1203 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1204 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1205 | netif_tx_wake_queue(txq); | |
1206 | } | |
1207 | } | |
1208 | ||
d29f749e DJ |
1209 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
1210 | { | |
1211 | set_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1212 | } | |
1213 | ||
bea3348e SH |
1214 | /** |
1215 | * netif_stop_queue - stop transmitted packets | |
1216 | * @dev: network device | |
1217 | * | |
1218 | * Stop upper layers calling the device hard_start_xmit routine. | |
1219 | * Used for flow control when transmit resources are unavailable. | |
1220 | */ | |
1da177e4 LT |
1221 | static inline void netif_stop_queue(struct net_device *dev) |
1222 | { | |
e8a0464c | 1223 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1224 | } |
1225 | ||
fd2ea0a7 DM |
1226 | static inline void netif_tx_stop_all_queues(struct net_device *dev) |
1227 | { | |
1228 | unsigned int i; | |
1229 | ||
1230 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1231 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1232 | netif_tx_stop_queue(txq); | |
1233 | } | |
1234 | } | |
1235 | ||
d29f749e DJ |
1236 | static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
1237 | { | |
1238 | return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1239 | } | |
1240 | ||
bea3348e SH |
1241 | /** |
1242 | * netif_queue_stopped - test if transmit queue is flowblocked | |
1243 | * @dev: network device | |
1244 | * | |
1245 | * Test if transmit queue on device is currently unable to send. | |
1246 | */ | |
1da177e4 LT |
1247 | static inline int netif_queue_stopped(const struct net_device *dev) |
1248 | { | |
e8a0464c | 1249 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1250 | } |
1251 | ||
c3f26a26 DM |
1252 | static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue) |
1253 | { | |
1254 | return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state); | |
1255 | } | |
1256 | ||
bea3348e SH |
1257 | /** |
1258 | * netif_running - test if up | |
1259 | * @dev: network device | |
1260 | * | |
1261 | * Test if the device has been brought up. | |
1262 | */ | |
1da177e4 LT |
1263 | static inline int netif_running(const struct net_device *dev) |
1264 | { | |
1265 | return test_bit(__LINK_STATE_START, &dev->state); | |
1266 | } | |
1267 | ||
f25f4e44 PWJ |
1268 | /* |
1269 | * Routines to manage the subqueues on a device. We only need start | |
1270 | * stop, and a check if it's stopped. All other device management is | |
1271 | * done at the overall netdevice level. | |
1272 | * Also test the device if we're multiqueue. | |
1273 | */ | |
bea3348e SH |
1274 | |
1275 | /** | |
1276 | * netif_start_subqueue - allow sending packets on subqueue | |
1277 | * @dev: network device | |
1278 | * @queue_index: sub queue index | |
1279 | * | |
1280 | * Start individual transmit queue of a device with multiple transmit queues. | |
1281 | */ | |
f25f4e44 PWJ |
1282 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
1283 | { | |
fd2ea0a7 DM |
1284 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
1285 | clear_bit(__QUEUE_STATE_XOFF, &txq->state); | |
f25f4e44 PWJ |
1286 | } |
1287 | ||
bea3348e SH |
1288 | /** |
1289 | * netif_stop_subqueue - stop sending packets on subqueue | |
1290 | * @dev: network device | |
1291 | * @queue_index: sub queue index | |
1292 | * | |
1293 | * Stop individual transmit queue of a device with multiple transmit queues. | |
1294 | */ | |
f25f4e44 PWJ |
1295 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
1296 | { | |
fd2ea0a7 | 1297 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1298 | #ifdef CONFIG_NETPOLL_TRAP |
1299 | if (netpoll_trap()) | |
1300 | return; | |
1301 | #endif | |
fd2ea0a7 | 1302 | set_bit(__QUEUE_STATE_XOFF, &txq->state); |
f25f4e44 PWJ |
1303 | } |
1304 | ||
bea3348e SH |
1305 | /** |
1306 | * netif_subqueue_stopped - test status of subqueue | |
1307 | * @dev: network device | |
1308 | * @queue_index: sub queue index | |
1309 | * | |
1310 | * Check individual transmit queue of a device with multiple transmit queues. | |
1311 | */ | |
668f895a | 1312 | static inline int __netif_subqueue_stopped(const struct net_device *dev, |
f25f4e44 PWJ |
1313 | u16 queue_index) |
1314 | { | |
fd2ea0a7 DM |
1315 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
1316 | return test_bit(__QUEUE_STATE_XOFF, &txq->state); | |
f25f4e44 PWJ |
1317 | } |
1318 | ||
668f895a PE |
1319 | static inline int netif_subqueue_stopped(const struct net_device *dev, |
1320 | struct sk_buff *skb) | |
1321 | { | |
1322 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
1323 | } | |
bea3348e SH |
1324 | |
1325 | /** | |
1326 | * netif_wake_subqueue - allow sending packets on subqueue | |
1327 | * @dev: network device | |
1328 | * @queue_index: sub queue index | |
1329 | * | |
1330 | * Resume individual transmit queue of a device with multiple transmit queues. | |
1331 | */ | |
f25f4e44 PWJ |
1332 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) |
1333 | { | |
fd2ea0a7 | 1334 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1335 | #ifdef CONFIG_NETPOLL_TRAP |
1336 | if (netpoll_trap()) | |
1337 | return; | |
1338 | #endif | |
fd2ea0a7 | 1339 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1340 | __netif_schedule(txq->qdisc); |
f25f4e44 PWJ |
1341 | } |
1342 | ||
bea3348e SH |
1343 | /** |
1344 | * netif_is_multiqueue - test if device has multiple transmit queues | |
1345 | * @dev: network device | |
1346 | * | |
1347 | * Check if device has multiple transmit queues | |
bea3348e | 1348 | */ |
f25f4e44 PWJ |
1349 | static inline int netif_is_multiqueue(const struct net_device *dev) |
1350 | { | |
09e83b5d | 1351 | return (dev->num_tx_queues > 1); |
f25f4e44 | 1352 | } |
1da177e4 LT |
1353 | |
1354 | /* Use this variant when it is known for sure that it | |
0ef47309 ML |
1355 | * is executing from hardware interrupt context or with hardware interrupts |
1356 | * disabled. | |
1da177e4 | 1357 | */ |
bea3348e | 1358 | extern void dev_kfree_skb_irq(struct sk_buff *skb); |
1da177e4 LT |
1359 | |
1360 | /* Use this variant in places where it could be invoked | |
0ef47309 ML |
1361 | * from either hardware interrupt or other context, with hardware interrupts |
1362 | * either disabled or enabled. | |
1da177e4 | 1363 | */ |
56079431 | 1364 | extern void dev_kfree_skb_any(struct sk_buff *skb); |
1da177e4 LT |
1365 | |
1366 | #define HAVE_NETIF_RX 1 | |
1367 | extern int netif_rx(struct sk_buff *skb); | |
1368 | extern int netif_rx_ni(struct sk_buff *skb); | |
1369 | #define HAVE_NETIF_RECEIVE_SKB 1 | |
1370 | extern int netif_receive_skb(struct sk_buff *skb); | |
bc1d0411 | 1371 | extern void netif_nit_deliver(struct sk_buff *skb); |
c2373ee9 | 1372 | extern int dev_valid_name(const char *name); |
881d966b EB |
1373 | extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); |
1374 | extern int dev_ethtool(struct net *net, struct ifreq *); | |
1da177e4 LT |
1375 | extern unsigned dev_get_flags(const struct net_device *); |
1376 | extern int dev_change_flags(struct net_device *, unsigned); | |
cf04a4c7 | 1377 | extern int dev_change_name(struct net_device *, const char *); |
0b815a1a | 1378 | extern int dev_set_alias(struct net_device *, const char *, size_t); |
ce286d32 EB |
1379 | extern int dev_change_net_namespace(struct net_device *, |
1380 | struct net *, const char *); | |
1da177e4 LT |
1381 | extern int dev_set_mtu(struct net_device *, int); |
1382 | extern int dev_set_mac_address(struct net_device *, | |
1383 | struct sockaddr *); | |
f6a78bfc | 1384 | extern int dev_hard_start_xmit(struct sk_buff *skb, |
fd2ea0a7 DM |
1385 | struct net_device *dev, |
1386 | struct netdev_queue *txq); | |
1da177e4 | 1387 | |
20380731 | 1388 | extern int netdev_budget; |
1da177e4 LT |
1389 | |
1390 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
1391 | extern void netdev_run_todo(void); | |
1392 | ||
bea3348e SH |
1393 | /** |
1394 | * dev_put - release reference to device | |
1395 | * @dev: network device | |
1396 | * | |
9ef4429b | 1397 | * Release reference to device to allow it to be freed. |
bea3348e | 1398 | */ |
1da177e4 LT |
1399 | static inline void dev_put(struct net_device *dev) |
1400 | { | |
1401 | atomic_dec(&dev->refcnt); | |
1402 | } | |
1403 | ||
bea3348e SH |
1404 | /** |
1405 | * dev_hold - get reference to device | |
1406 | * @dev: network device | |
1407 | * | |
9ef4429b | 1408 | * Hold reference to device to keep it from being freed. |
bea3348e | 1409 | */ |
15333061 SH |
1410 | static inline void dev_hold(struct net_device *dev) |
1411 | { | |
1412 | atomic_inc(&dev->refcnt); | |
1413 | } | |
1da177e4 LT |
1414 | |
1415 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
1416 | * and _off may be called from IRQ context, but it is caller | |
1417 | * who is responsible for serialization of these calls. | |
b00055aa SR |
1418 | * |
1419 | * The name carrier is inappropriate, these functions should really be | |
1420 | * called netif_lowerlayer_*() because they represent the state of any | |
1421 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
1422 | */ |
1423 | ||
1424 | extern void linkwatch_fire_event(struct net_device *dev); | |
1425 | ||
bea3348e SH |
1426 | /** |
1427 | * netif_carrier_ok - test if carrier present | |
1428 | * @dev: network device | |
1429 | * | |
1430 | * Check if carrier is present on device | |
1431 | */ | |
1da177e4 LT |
1432 | static inline int netif_carrier_ok(const struct net_device *dev) |
1433 | { | |
1434 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
1435 | } | |
1436 | ||
1437 | extern void __netdev_watchdog_up(struct net_device *dev); | |
1438 | ||
0a242efc | 1439 | extern void netif_carrier_on(struct net_device *dev); |
1da177e4 | 1440 | |
0a242efc | 1441 | extern void netif_carrier_off(struct net_device *dev); |
1da177e4 | 1442 | |
bea3348e SH |
1443 | /** |
1444 | * netif_dormant_on - mark device as dormant. | |
1445 | * @dev: network device | |
1446 | * | |
1447 | * Mark device as dormant (as per RFC2863). | |
1448 | * | |
1449 | * The dormant state indicates that the relevant interface is not | |
1450 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
1451 | * in a "pending" state, waiting for some external event. For "on- | |
1452 | * demand" interfaces, this new state identifies the situation where the | |
1453 | * interface is waiting for events to place it in the up state. | |
1454 | * | |
1455 | */ | |
b00055aa SR |
1456 | static inline void netif_dormant_on(struct net_device *dev) |
1457 | { | |
1458 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1459 | linkwatch_fire_event(dev); | |
1460 | } | |
1461 | ||
bea3348e SH |
1462 | /** |
1463 | * netif_dormant_off - set device as not dormant. | |
1464 | * @dev: network device | |
1465 | * | |
1466 | * Device is not in dormant state. | |
1467 | */ | |
b00055aa SR |
1468 | static inline void netif_dormant_off(struct net_device *dev) |
1469 | { | |
1470 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1471 | linkwatch_fire_event(dev); | |
1472 | } | |
1473 | ||
bea3348e SH |
1474 | /** |
1475 | * netif_dormant - test if carrier present | |
1476 | * @dev: network device | |
1477 | * | |
1478 | * Check if carrier is present on device | |
1479 | */ | |
b00055aa SR |
1480 | static inline int netif_dormant(const struct net_device *dev) |
1481 | { | |
1482 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
1483 | } | |
1484 | ||
1485 | ||
bea3348e SH |
1486 | /** |
1487 | * netif_oper_up - test if device is operational | |
1488 | * @dev: network device | |
1489 | * | |
1490 | * Check if carrier is operational | |
1491 | */ | |
b00055aa SR |
1492 | static inline int netif_oper_up(const struct net_device *dev) { |
1493 | return (dev->operstate == IF_OPER_UP || | |
1494 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
1495 | } | |
1496 | ||
bea3348e SH |
1497 | /** |
1498 | * netif_device_present - is device available or removed | |
1499 | * @dev: network device | |
1500 | * | |
1501 | * Check if device has not been removed from system. | |
1502 | */ | |
1da177e4 LT |
1503 | static inline int netif_device_present(struct net_device *dev) |
1504 | { | |
1505 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
1506 | } | |
1507 | ||
56079431 | 1508 | extern void netif_device_detach(struct net_device *dev); |
1da177e4 | 1509 | |
56079431 | 1510 | extern void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
1511 | |
1512 | /* | |
1513 | * Network interface message level settings | |
1514 | */ | |
1515 | #define HAVE_NETIF_MSG 1 | |
1516 | ||
1517 | enum { | |
1518 | NETIF_MSG_DRV = 0x0001, | |
1519 | NETIF_MSG_PROBE = 0x0002, | |
1520 | NETIF_MSG_LINK = 0x0004, | |
1521 | NETIF_MSG_TIMER = 0x0008, | |
1522 | NETIF_MSG_IFDOWN = 0x0010, | |
1523 | NETIF_MSG_IFUP = 0x0020, | |
1524 | NETIF_MSG_RX_ERR = 0x0040, | |
1525 | NETIF_MSG_TX_ERR = 0x0080, | |
1526 | NETIF_MSG_TX_QUEUED = 0x0100, | |
1527 | NETIF_MSG_INTR = 0x0200, | |
1528 | NETIF_MSG_TX_DONE = 0x0400, | |
1529 | NETIF_MSG_RX_STATUS = 0x0800, | |
1530 | NETIF_MSG_PKTDATA = 0x1000, | |
1531 | NETIF_MSG_HW = 0x2000, | |
1532 | NETIF_MSG_WOL = 0x4000, | |
1533 | }; | |
1534 | ||
1535 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
1536 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
1537 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
1538 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
1539 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
1540 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
1541 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
1542 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
1543 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
1544 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
1545 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
1546 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
1547 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
1548 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
1549 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
1550 | ||
1551 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
1552 | { | |
1553 | /* use default */ | |
1554 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
1555 | return default_msg_enable_bits; | |
1556 | if (debug_value == 0) /* no output */ | |
1557 | return 0; | |
1558 | /* set low N bits */ | |
1559 | return (1 << debug_value) - 1; | |
1560 | } | |
1561 | ||
0a122576 | 1562 | /* Test if receive needs to be scheduled but only if up */ |
bea3348e SH |
1563 | static inline int netif_rx_schedule_prep(struct net_device *dev, |
1564 | struct napi_struct *napi) | |
1da177e4 | 1565 | { |
a0a46196 | 1566 | return napi_schedule_prep(napi); |
1da177e4 LT |
1567 | } |
1568 | ||
1569 | /* Add interface to tail of rx poll list. This assumes that _prep has | |
1570 | * already been called and returned 1. | |
1571 | */ | |
bea3348e SH |
1572 | static inline void __netif_rx_schedule(struct net_device *dev, |
1573 | struct napi_struct *napi) | |
1574 | { | |
bea3348e SH |
1575 | __napi_schedule(napi); |
1576 | } | |
1da177e4 LT |
1577 | |
1578 | /* Try to reschedule poll. Called by irq handler. */ | |
1579 | ||
bea3348e SH |
1580 | static inline void netif_rx_schedule(struct net_device *dev, |
1581 | struct napi_struct *napi) | |
1da177e4 | 1582 | { |
bea3348e SH |
1583 | if (netif_rx_schedule_prep(dev, napi)) |
1584 | __netif_rx_schedule(dev, napi); | |
1da177e4 LT |
1585 | } |
1586 | ||
bea3348e SH |
1587 | /* Try to reschedule poll. Called by dev->poll() after netif_rx_complete(). */ |
1588 | static inline int netif_rx_reschedule(struct net_device *dev, | |
1589 | struct napi_struct *napi) | |
1da177e4 | 1590 | { |
bea3348e SH |
1591 | if (napi_schedule_prep(napi)) { |
1592 | __netif_rx_schedule(dev, napi); | |
1da177e4 LT |
1593 | return 1; |
1594 | } | |
1595 | return 0; | |
1596 | } | |
1597 | ||
b0ba6667 HX |
1598 | /* same as netif_rx_complete, except that local_irq_save(flags) |
1599 | * has already been issued | |
1600 | */ | |
bea3348e SH |
1601 | static inline void __netif_rx_complete(struct net_device *dev, |
1602 | struct napi_struct *napi) | |
b0ba6667 | 1603 | { |
bea3348e | 1604 | __napi_complete(napi); |
b0ba6667 HX |
1605 | } |
1606 | ||
1da177e4 LT |
1607 | /* Remove interface from poll list: it must be in the poll list |
1608 | * on current cpu. This primitive is called by dev->poll(), when | |
1609 | * it completes the work. The device cannot be out of poll list at this | |
1610 | * moment, it is BUG(). | |
1611 | */ | |
bea3348e SH |
1612 | static inline void netif_rx_complete(struct net_device *dev, |
1613 | struct napi_struct *napi) | |
1da177e4 LT |
1614 | { |
1615 | unsigned long flags; | |
1616 | ||
1617 | local_irq_save(flags); | |
bea3348e | 1618 | __netif_rx_complete(dev, napi); |
1da177e4 LT |
1619 | local_irq_restore(flags); |
1620 | } | |
1621 | ||
c773e847 | 1622 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 1623 | { |
c773e847 DM |
1624 | spin_lock(&txq->_xmit_lock); |
1625 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
1626 | } |
1627 | ||
fd2ea0a7 DM |
1628 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
1629 | { | |
1630 | spin_lock_bh(&txq->_xmit_lock); | |
1631 | txq->xmit_lock_owner = smp_processor_id(); | |
1632 | } | |
1633 | ||
c3f26a26 DM |
1634 | static inline int __netif_tx_trylock(struct netdev_queue *txq) |
1635 | { | |
1636 | int ok = spin_trylock(&txq->_xmit_lock); | |
1637 | if (likely(ok)) | |
1638 | txq->xmit_lock_owner = smp_processor_id(); | |
1639 | return ok; | |
1640 | } | |
1641 | ||
1642 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
1643 | { | |
1644 | txq->xmit_lock_owner = -1; | |
1645 | spin_unlock(&txq->_xmit_lock); | |
1646 | } | |
1647 | ||
1648 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
1649 | { | |
1650 | txq->xmit_lock_owner = -1; | |
1651 | spin_unlock_bh(&txq->_xmit_lock); | |
1652 | } | |
1653 | ||
d29f749e DJ |
1654 | /** |
1655 | * netif_tx_lock - grab network device transmit lock | |
1656 | * @dev: network device | |
d29f749e DJ |
1657 | * |
1658 | * Get network device transmit lock | |
1659 | */ | |
22dd7495 JHS |
1660 | static inline void netif_tx_lock(struct net_device *dev) |
1661 | { | |
e8a0464c | 1662 | unsigned int i; |
c3f26a26 | 1663 | int cpu; |
c773e847 | 1664 | |
c3f26a26 DM |
1665 | spin_lock(&dev->tx_global_lock); |
1666 | cpu = smp_processor_id(); | |
e8a0464c DM |
1667 | for (i = 0; i < dev->num_tx_queues; i++) { |
1668 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
1669 | |
1670 | /* We are the only thread of execution doing a | |
1671 | * freeze, but we have to grab the _xmit_lock in | |
1672 | * order to synchronize with threads which are in | |
1673 | * the ->hard_start_xmit() handler and already | |
1674 | * checked the frozen bit. | |
1675 | */ | |
e8a0464c | 1676 | __netif_tx_lock(txq, cpu); |
c3f26a26 DM |
1677 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
1678 | __netif_tx_unlock(txq); | |
e8a0464c | 1679 | } |
932ff279 HX |
1680 | } |
1681 | ||
1682 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
1683 | { | |
e8a0464c DM |
1684 | local_bh_disable(); |
1685 | netif_tx_lock(dev); | |
932ff279 HX |
1686 | } |
1687 | ||
932ff279 HX |
1688 | static inline void netif_tx_unlock(struct net_device *dev) |
1689 | { | |
e8a0464c DM |
1690 | unsigned int i; |
1691 | ||
1692 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1693 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c773e847 | 1694 | |
c3f26a26 DM |
1695 | /* No need to grab the _xmit_lock here. If the |
1696 | * queue is not stopped for another reason, we | |
1697 | * force a schedule. | |
1698 | */ | |
1699 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
1700 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) | |
1701 | __netif_schedule(txq->qdisc); | |
1702 | } | |
1703 | spin_unlock(&dev->tx_global_lock); | |
932ff279 HX |
1704 | } |
1705 | ||
1706 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
1707 | { | |
e8a0464c DM |
1708 | netif_tx_unlock(dev); |
1709 | local_bh_enable(); | |
932ff279 HX |
1710 | } |
1711 | ||
c773e847 | 1712 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 1713 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 1714 | __netif_tx_lock(txq, cpu); \ |
22dd7495 JHS |
1715 | } \ |
1716 | } | |
1717 | ||
c773e847 | 1718 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 1719 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 1720 | __netif_tx_unlock(txq); \ |
22dd7495 JHS |
1721 | } \ |
1722 | } | |
1723 | ||
1da177e4 LT |
1724 | static inline void netif_tx_disable(struct net_device *dev) |
1725 | { | |
fd2ea0a7 | 1726 | unsigned int i; |
c3f26a26 | 1727 | int cpu; |
fd2ea0a7 | 1728 | |
c3f26a26 DM |
1729 | local_bh_disable(); |
1730 | cpu = smp_processor_id(); | |
fd2ea0a7 DM |
1731 | for (i = 0; i < dev->num_tx_queues; i++) { |
1732 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
1733 | |
1734 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 1735 | netif_tx_stop_queue(txq); |
c3f26a26 | 1736 | __netif_tx_unlock(txq); |
fd2ea0a7 | 1737 | } |
c3f26a26 | 1738 | local_bh_enable(); |
1da177e4 LT |
1739 | } |
1740 | ||
e308a5d8 DM |
1741 | static inline void netif_addr_lock(struct net_device *dev) |
1742 | { | |
1743 | spin_lock(&dev->addr_list_lock); | |
1744 | } | |
1745 | ||
1746 | static inline void netif_addr_lock_bh(struct net_device *dev) | |
1747 | { | |
1748 | spin_lock_bh(&dev->addr_list_lock); | |
1749 | } | |
1750 | ||
1751 | static inline void netif_addr_unlock(struct net_device *dev) | |
1752 | { | |
1753 | spin_unlock(&dev->addr_list_lock); | |
1754 | } | |
1755 | ||
1756 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
1757 | { | |
1758 | spin_unlock_bh(&dev->addr_list_lock); | |
1759 | } | |
1760 | ||
1da177e4 LT |
1761 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
1762 | ||
1763 | extern void ether_setup(struct net_device *dev); | |
1764 | ||
1765 | /* Support for loadable net-drivers */ | |
f25f4e44 PWJ |
1766 | extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, |
1767 | void (*setup)(struct net_device *), | |
1768 | unsigned int queue_count); | |
1769 | #define alloc_netdev(sizeof_priv, name, setup) \ | |
1770 | alloc_netdev_mq(sizeof_priv, name, setup, 1) | |
1da177e4 LT |
1771 | extern int register_netdev(struct net_device *dev); |
1772 | extern void unregister_netdev(struct net_device *dev); | |
4417da66 PM |
1773 | /* Functions used for secondary unicast and multicast support */ |
1774 | extern void dev_set_rx_mode(struct net_device *dev); | |
1775 | extern void __dev_set_rx_mode(struct net_device *dev); | |
1776 | extern int dev_unicast_delete(struct net_device *dev, void *addr, int alen); | |
1777 | extern int dev_unicast_add(struct net_device *dev, void *addr, int alen); | |
e83a2ea8 CL |
1778 | extern int dev_unicast_sync(struct net_device *to, struct net_device *from); |
1779 | extern void dev_unicast_unsync(struct net_device *to, struct net_device *from); | |
1da177e4 LT |
1780 | extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all); |
1781 | extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly); | |
a0a400d7 PM |
1782 | extern int dev_mc_sync(struct net_device *to, struct net_device *from); |
1783 | extern void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
61cbc2fc PM |
1784 | extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all); |
1785 | extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly); | |
e83a2ea8 CL |
1786 | extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); |
1787 | extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); | |
dad9b335 WC |
1788 | extern int dev_set_promiscuity(struct net_device *dev, int inc); |
1789 | extern int dev_set_allmulti(struct net_device *dev, int inc); | |
1da177e4 | 1790 | extern void netdev_state_change(struct net_device *dev); |
c1da4ac7 | 1791 | extern void netdev_bonding_change(struct net_device *dev); |
d8a33ac4 | 1792 | extern void netdev_features_change(struct net_device *dev); |
1da177e4 | 1793 | /* Load a device via the kmod */ |
881d966b | 1794 | extern void dev_load(struct net *net, const char *name); |
1da177e4 | 1795 | extern void dev_mcast_init(void); |
eeda3fd6 SH |
1796 | extern const struct net_device_stats *dev_get_stats(struct net_device *dev); |
1797 | ||
1da177e4 LT |
1798 | extern int netdev_max_backlog; |
1799 | extern int weight_p; | |
1800 | extern int netdev_set_master(struct net_device *dev, struct net_device *master); | |
84fa7933 | 1801 | extern int skb_checksum_help(struct sk_buff *skb); |
576a30eb | 1802 | extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); |
fb286bb2 HX |
1803 | #ifdef CONFIG_BUG |
1804 | extern void netdev_rx_csum_fault(struct net_device *dev); | |
1805 | #else | |
1806 | static inline void netdev_rx_csum_fault(struct net_device *dev) | |
1807 | { | |
1808 | } | |
1809 | #endif | |
1da177e4 LT |
1810 | /* rx skb timestamps */ |
1811 | extern void net_enable_timestamp(void); | |
1812 | extern void net_disable_timestamp(void); | |
1813 | ||
20380731 ACM |
1814 | #ifdef CONFIG_PROC_FS |
1815 | extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); | |
1816 | extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); | |
1817 | extern void dev_seq_stop(struct seq_file *seq, void *v); | |
1818 | #endif | |
1819 | ||
b8a9787e JV |
1820 | extern int netdev_class_create_file(struct class_attribute *class_attr); |
1821 | extern void netdev_class_remove_file(struct class_attribute *class_attr); | |
1822 | ||
cf04a4c7 | 1823 | extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len); |
6579e57b | 1824 | |
20380731 ACM |
1825 | extern void linkwatch_run_queue(void); |
1826 | ||
b63365a2 HX |
1827 | unsigned long netdev_increment_features(unsigned long all, unsigned long one, |
1828 | unsigned long mask); | |
1829 | unsigned long netdev_fix_features(unsigned long features, const char *name); | |
7f353bf2 | 1830 | |
bcd76111 | 1831 | static inline int net_gso_ok(int features, int gso_type) |
576a30eb | 1832 | { |
bcd76111 | 1833 | int feature = gso_type << NETIF_F_GSO_SHIFT; |
d6b4991a | 1834 | return (features & feature) == feature; |
576a30eb HX |
1835 | } |
1836 | ||
bcd76111 HX |
1837 | static inline int skb_gso_ok(struct sk_buff *skb, int features) |
1838 | { | |
a430a43d | 1839 | return net_gso_ok(features, skb_shinfo(skb)->gso_type); |
bcd76111 HX |
1840 | } |
1841 | ||
7967168c HX |
1842 | static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) |
1843 | { | |
a430a43d HX |
1844 | return skb_is_gso(skb) && |
1845 | (!skb_gso_ok(skb, dev->features) || | |
84fa7933 | 1846 | unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); |
7967168c HX |
1847 | } |
1848 | ||
82cc1a7a PWJ |
1849 | static inline void netif_set_gso_max_size(struct net_device *dev, |
1850 | unsigned int size) | |
1851 | { | |
1852 | dev->gso_max_size = size; | |
1853 | } | |
1854 | ||
7ea49ed7 | 1855 | /* On bonding slaves other than the currently active slave, suppress |
f5b2b966 JV |
1856 | * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and |
1857 | * ARP on active-backup slaves with arp_validate enabled. | |
7ea49ed7 DM |
1858 | */ |
1859 | static inline int skb_bond_should_drop(struct sk_buff *skb) | |
1860 | { | |
1861 | struct net_device *dev = skb->dev; | |
1862 | struct net_device *master = dev->master; | |
1863 | ||
6cf3f41e JV |
1864 | if (master) { |
1865 | if (master->priv_flags & IFF_MASTER_ARPMON) | |
1866 | dev->last_rx = jiffies; | |
1867 | ||
1868 | if (dev->priv_flags & IFF_SLAVE_INACTIVE) { | |
1869 | if ((dev->priv_flags & IFF_SLAVE_NEEDARP) && | |
1870 | skb->protocol == __constant_htons(ETH_P_ARP)) | |
7ea49ed7 | 1871 | return 0; |
7ea49ed7 | 1872 | |
6cf3f41e JV |
1873 | if (master->priv_flags & IFF_MASTER_ALB) { |
1874 | if (skb->pkt_type != PACKET_BROADCAST && | |
1875 | skb->pkt_type != PACKET_MULTICAST) | |
1876 | return 0; | |
1877 | } | |
1878 | if (master->priv_flags & IFF_MASTER_8023AD && | |
1879 | skb->protocol == __constant_htons(ETH_P_SLOW)) | |
1880 | return 0; | |
1881 | ||
1882 | return 1; | |
1883 | } | |
7ea49ed7 DM |
1884 | } |
1885 | return 0; | |
1886 | } | |
1887 | ||
505d4f73 | 1888 | extern struct pernet_operations __net_initdata loopback_net_ops; |
1da177e4 LT |
1889 | #endif /* __KERNEL__ */ |
1890 | ||
1891 | #endif /* _LINUX_DEV_H */ |