Commit | Line | Data |
---|---|---|
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> |
2f90b865 AD |
46 | #ifdef CONFIG_DCBNL |
47 | #include <net/dcbnl.h> | |
48 | #endif | |
a050c33f | 49 | |
1da177e4 LT |
50 | struct vlan_group; |
51 | struct ethtool_ops; | |
115c1d6e | 52 | struct netpoll_info; |
704232c2 JB |
53 | /* 802.11 specific */ |
54 | struct wireless_dev; | |
1da177e4 LT |
55 | /* source back-compat hooks */ |
56 | #define SET_ETHTOOL_OPS(netdev,ops) \ | |
57 | ( (netdev)->ethtool_ops = (ops) ) | |
58 | ||
59 | #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev | |
60 | functions are available. */ | |
61 | #define HAVE_FREE_NETDEV /* free_netdev() */ | |
62 | #define HAVE_NETDEV_PRIV /* netdev_priv() */ | |
63 | ||
64 | #define NET_XMIT_SUCCESS 0 | |
65 | #define NET_XMIT_DROP 1 /* skb dropped */ | |
66 | #define NET_XMIT_CN 2 /* congestion notification */ | |
67 | #define NET_XMIT_POLICED 3 /* skb is shot by police */ | |
378a2f09 | 68 | #define NET_XMIT_MASK 0xFFFF /* qdisc flags in net/sch_generic.h */ |
1da177e4 LT |
69 | |
70 | /* Backlog congestion levels */ | |
71 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
72 | #define NET_RX_DROP 1 /* packet dropped */ | |
73 | #define NET_RX_CN_LOW 2 /* storm alert, just in case */ | |
74 | #define NET_RX_CN_MOD 3 /* Storm on its way! */ | |
75 | #define NET_RX_CN_HIGH 4 /* The storm is here */ | |
76 | #define NET_RX_BAD 5 /* packet dropped due to kernel error */ | |
77 | ||
b9df3cb8 GR |
78 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
79 | * indicates that the device will soon be dropping packets, or already drops | |
80 | * some packets of the same priority; prompting us to send less aggressively. */ | |
81 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e)) | |
1da177e4 LT |
82 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
83 | ||
84 | #endif | |
85 | ||
86 | #define MAX_ADDR_LEN 32 /* Largest hardware address length */ | |
87 | ||
88 | /* Driver transmit return codes */ | |
89 | #define NETDEV_TX_OK 0 /* driver took care of packet */ | |
90 | #define NETDEV_TX_BUSY 1 /* driver tx path was busy*/ | |
91 | #define NETDEV_TX_LOCKED -1 /* driver tx lock was already taken */ | |
92 | ||
c88e6f51 AB |
93 | #ifdef __KERNEL__ |
94 | ||
1da177e4 LT |
95 | /* |
96 | * Compute the worst case header length according to the protocols | |
97 | * used. | |
98 | */ | |
99 | ||
8388e3da DM |
100 | #if defined(CONFIG_WLAN_80211) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) |
101 | # if defined(CONFIG_MAC80211_MESH) | |
102 | # define LL_MAX_HEADER 128 | |
103 | # else | |
104 | # define LL_MAX_HEADER 96 | |
105 | # endif | |
106 | #elif defined(CONFIG_TR) | |
107 | # define LL_MAX_HEADER 48 | |
1da177e4 | 108 | #else |
8388e3da | 109 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
110 | #endif |
111 | ||
e81c7359 DM |
112 | #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \ |
113 | !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ | |
114 | !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ | |
115 | !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) | |
1da177e4 LT |
116 | #define MAX_HEADER LL_MAX_HEADER |
117 | #else | |
118 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
119 | #endif | |
120 | ||
c88e6f51 AB |
121 | #endif /* __KERNEL__ */ |
122 | ||
1da177e4 LT |
123 | /* |
124 | * Network device statistics. Akin to the 2.0 ether stats but | |
125 | * with byte counters. | |
126 | */ | |
127 | ||
128 | struct net_device_stats | |
129 | { | |
130 | unsigned long rx_packets; /* total packets received */ | |
131 | unsigned long tx_packets; /* total packets transmitted */ | |
132 | unsigned long rx_bytes; /* total bytes received */ | |
133 | unsigned long tx_bytes; /* total bytes transmitted */ | |
134 | unsigned long rx_errors; /* bad packets received */ | |
135 | unsigned long tx_errors; /* packet transmit problems */ | |
136 | unsigned long rx_dropped; /* no space in linux buffers */ | |
137 | unsigned long tx_dropped; /* no space available in linux */ | |
138 | unsigned long multicast; /* multicast packets received */ | |
139 | unsigned long collisions; | |
140 | ||
141 | /* detailed rx_errors: */ | |
142 | unsigned long rx_length_errors; | |
143 | unsigned long rx_over_errors; /* receiver ring buff overflow */ | |
144 | unsigned long rx_crc_errors; /* recved pkt with crc error */ | |
145 | unsigned long rx_frame_errors; /* recv'd frame alignment error */ | |
146 | unsigned long rx_fifo_errors; /* recv'r fifo overrun */ | |
147 | unsigned long rx_missed_errors; /* receiver missed packet */ | |
148 | ||
149 | /* detailed tx_errors */ | |
150 | unsigned long tx_aborted_errors; | |
151 | unsigned long tx_carrier_errors; | |
152 | unsigned long tx_fifo_errors; | |
153 | unsigned long tx_heartbeat_errors; | |
154 | unsigned long tx_window_errors; | |
155 | ||
156 | /* for cslip etc */ | |
157 | unsigned long rx_compressed; | |
158 | unsigned long tx_compressed; | |
159 | }; | |
160 | ||
161 | ||
162 | /* Media selection options. */ | |
163 | enum { | |
164 | IF_PORT_UNKNOWN = 0, | |
165 | IF_PORT_10BASE2, | |
166 | IF_PORT_10BASET, | |
167 | IF_PORT_AUI, | |
168 | IF_PORT_100BASET, | |
169 | IF_PORT_100BASETX, | |
170 | IF_PORT_100BASEFX | |
171 | }; | |
172 | ||
173 | #ifdef __KERNEL__ | |
174 | ||
175 | #include <linux/cache.h> | |
176 | #include <linux/skbuff.h> | |
177 | ||
178 | struct neighbour; | |
179 | struct neigh_parms; | |
180 | struct sk_buff; | |
181 | ||
182 | struct netif_rx_stats | |
183 | { | |
184 | unsigned total; | |
185 | unsigned dropped; | |
186 | unsigned time_squeeze; | |
1da177e4 LT |
187 | unsigned cpu_collision; |
188 | }; | |
189 | ||
190 | DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat); | |
191 | ||
bf742482 PM |
192 | struct dev_addr_list |
193 | { | |
194 | struct dev_addr_list *next; | |
195 | u8 da_addr[MAX_ADDR_LEN]; | |
196 | u8 da_addrlen; | |
a0a400d7 | 197 | u8 da_synced; |
bf742482 PM |
198 | int da_users; |
199 | int da_gusers; | |
200 | }; | |
1da177e4 LT |
201 | |
202 | /* | |
203 | * We tag multicasts with these structures. | |
204 | */ | |
3fba5a8b PM |
205 | |
206 | #define dev_mc_list dev_addr_list | |
207 | #define dmi_addr da_addr | |
208 | #define dmi_addrlen da_addrlen | |
209 | #define dmi_users da_users | |
210 | #define dmi_gusers da_gusers | |
1da177e4 LT |
211 | |
212 | struct hh_cache | |
213 | { | |
214 | struct hh_cache *hh_next; /* Next entry */ | |
215 | atomic_t hh_refcnt; /* number of users */ | |
f0490980 ED |
216 | /* |
217 | * We want hh_output, hh_len, hh_lock and hh_data be a in a separate | |
218 | * cache line on SMP. | |
219 | * They are mostly read, but hh_refcnt may be changed quite frequently, | |
220 | * incurring cache line ping pongs. | |
221 | */ | |
222 | __be16 hh_type ____cacheline_aligned_in_smp; | |
223 | /* protocol identifier, f.e ETH_P_IP | |
1da177e4 LT |
224 | * NOTE: For VLANs, this will be the |
225 | * encapuslated type. --BLG | |
226 | */ | |
d5c42c0e | 227 | u16 hh_len; /* length of header */ |
1da177e4 | 228 | int (*hh_output)(struct sk_buff *skb); |
3644f0ce | 229 | seqlock_t hh_lock; |
1da177e4 LT |
230 | |
231 | /* cached hardware header; allow for machine alignment needs. */ | |
232 | #define HH_DATA_MOD 16 | |
233 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 234 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
235 | #define HH_DATA_ALIGN(__len) \ |
236 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
237 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
238 | }; | |
239 | ||
240 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. | |
241 | * Alternative is: | |
242 | * dev->hard_header_len ? (dev->hard_header_len + | |
243 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
244 | * | |
245 | * We could use other alignment values, but we must maintain the | |
246 | * relationship HH alignment <= LL alignment. | |
f5184d26 JB |
247 | * |
248 | * LL_ALLOCATED_SPACE also takes into account the tailroom the device | |
249 | * may need. | |
1da177e4 LT |
250 | */ |
251 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 252 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 253 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 JB |
254 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
255 | #define LL_ALLOCATED_SPACE(dev) \ | |
256 | ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
1da177e4 | 257 | |
3b04ddde SH |
258 | struct header_ops { |
259 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
260 | unsigned short type, const void *daddr, | |
261 | const void *saddr, unsigned len); | |
262 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); | |
263 | int (*rebuild)(struct sk_buff *skb); | |
264 | #define HAVE_HEADER_CACHE | |
265 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh); | |
266 | void (*cache_update)(struct hh_cache *hh, | |
267 | const struct net_device *dev, | |
268 | const unsigned char *haddr); | |
269 | }; | |
270 | ||
1da177e4 LT |
271 | /* These flag bits are private to the generic network queueing |
272 | * layer, they may not be explicitly referenced by any other | |
273 | * code. | |
274 | */ | |
275 | ||
276 | enum netdev_state_t | |
277 | { | |
1da177e4 LT |
278 | __LINK_STATE_START, |
279 | __LINK_STATE_PRESENT, | |
1da177e4 | 280 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
281 | __LINK_STATE_LINKWATCH_PENDING, |
282 | __LINK_STATE_DORMANT, | |
1da177e4 LT |
283 | }; |
284 | ||
285 | ||
286 | /* | |
287 | * This structure holds at boot time configured netdevice settings. They | |
288 | * are then used in the device probing. | |
289 | */ | |
290 | struct netdev_boot_setup { | |
291 | char name[IFNAMSIZ]; | |
292 | struct ifmap map; | |
293 | }; | |
294 | #define NETDEV_BOOT_SETUP_MAX 8 | |
295 | ||
20380731 | 296 | extern int __init netdev_boot_setup(char *str); |
1da177e4 | 297 | |
bea3348e SH |
298 | /* |
299 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
300 | */ | |
301 | struct napi_struct { | |
302 | /* The poll_list must only be managed by the entity which | |
303 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
304 | * whoever atomically sets that bit can add this napi_struct | |
305 | * to the per-cpu poll_list, and whoever clears that bit | |
306 | * can remove from the list right before clearing the bit. | |
307 | */ | |
308 | struct list_head poll_list; | |
309 | ||
310 | unsigned long state; | |
311 | int weight; | |
312 | int (*poll)(struct napi_struct *, int); | |
313 | #ifdef CONFIG_NETPOLL | |
314 | spinlock_t poll_lock; | |
315 | int poll_owner; | |
316 | struct net_device *dev; | |
317 | struct list_head dev_list; | |
318 | #endif | |
319 | }; | |
320 | ||
321 | enum | |
322 | { | |
323 | NAPI_STATE_SCHED, /* Poll is scheduled */ | |
a0a46196 | 324 | NAPI_STATE_DISABLE, /* Disable pending */ |
bea3348e SH |
325 | }; |
326 | ||
b3c97528 | 327 | extern void __napi_schedule(struct napi_struct *n); |
bea3348e | 328 | |
a0a46196 DM |
329 | static inline int napi_disable_pending(struct napi_struct *n) |
330 | { | |
331 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
332 | } | |
333 | ||
bea3348e SH |
334 | /** |
335 | * napi_schedule_prep - check if napi can be scheduled | |
336 | * @n: napi context | |
337 | * | |
338 | * Test if NAPI routine is already running, and if not mark | |
339 | * it as running. This is used as a condition variable | |
a0a46196 DM |
340 | * insure only one NAPI poll instance runs. We also make |
341 | * sure there is no pending NAPI disable. | |
bea3348e SH |
342 | */ |
343 | static inline int napi_schedule_prep(struct napi_struct *n) | |
344 | { | |
a0a46196 DM |
345 | return !napi_disable_pending(n) && |
346 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); | |
bea3348e SH |
347 | } |
348 | ||
349 | /** | |
350 | * napi_schedule - schedule NAPI poll | |
351 | * @n: napi context | |
352 | * | |
353 | * Schedule NAPI poll routine to be called if it is not already | |
354 | * running. | |
355 | */ | |
356 | static inline void napi_schedule(struct napi_struct *n) | |
357 | { | |
358 | if (napi_schedule_prep(n)) | |
359 | __napi_schedule(n); | |
360 | } | |
361 | ||
bfe13f54 RD |
362 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
363 | static inline int napi_reschedule(struct napi_struct *napi) | |
364 | { | |
365 | if (napi_schedule_prep(napi)) { | |
366 | __napi_schedule(napi); | |
367 | return 1; | |
368 | } | |
369 | return 0; | |
370 | } | |
371 | ||
bea3348e SH |
372 | /** |
373 | * napi_complete - NAPI processing complete | |
374 | * @n: napi context | |
375 | * | |
376 | * Mark NAPI processing as complete. | |
377 | */ | |
378 | static inline void __napi_complete(struct napi_struct *n) | |
379 | { | |
380 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
381 | list_del(&n->poll_list); | |
382 | smp_mb__before_clear_bit(); | |
383 | clear_bit(NAPI_STATE_SCHED, &n->state); | |
384 | } | |
385 | ||
386 | static inline void napi_complete(struct napi_struct *n) | |
387 | { | |
50fd4407 DM |
388 | unsigned long flags; |
389 | ||
390 | local_irq_save(flags); | |
bea3348e | 391 | __napi_complete(n); |
50fd4407 | 392 | local_irq_restore(flags); |
bea3348e SH |
393 | } |
394 | ||
395 | /** | |
396 | * napi_disable - prevent NAPI from scheduling | |
397 | * @n: napi context | |
398 | * | |
399 | * Stop NAPI from being scheduled on this context. | |
400 | * Waits till any outstanding processing completes. | |
401 | */ | |
402 | static inline void napi_disable(struct napi_struct *n) | |
403 | { | |
a0a46196 | 404 | set_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e | 405 | while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) |
43cc7380 | 406 | msleep(1); |
a0a46196 | 407 | clear_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e SH |
408 | } |
409 | ||
410 | /** | |
411 | * napi_enable - enable NAPI scheduling | |
412 | * @n: napi context | |
413 | * | |
414 | * Resume NAPI from being scheduled on this context. | |
415 | * Must be paired with napi_disable. | |
416 | */ | |
417 | static inline void napi_enable(struct napi_struct *n) | |
418 | { | |
419 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
420 | smp_mb__before_clear_bit(); | |
421 | clear_bit(NAPI_STATE_SCHED, &n->state); | |
422 | } | |
423 | ||
c264c3de SH |
424 | #ifdef CONFIG_SMP |
425 | /** | |
426 | * napi_synchronize - wait until NAPI is not running | |
427 | * @n: napi context | |
428 | * | |
429 | * Wait until NAPI is done being scheduled on this context. | |
430 | * Waits till any outstanding processing completes but | |
431 | * does not disable future activations. | |
432 | */ | |
433 | static inline void napi_synchronize(const struct napi_struct *n) | |
434 | { | |
435 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
436 | msleep(1); | |
437 | } | |
438 | #else | |
439 | # define napi_synchronize(n) barrier() | |
440 | #endif | |
441 | ||
79d16385 DM |
442 | enum netdev_queue_state_t |
443 | { | |
444 | __QUEUE_STATE_XOFF, | |
c3f26a26 | 445 | __QUEUE_STATE_FROZEN, |
79d16385 DM |
446 | }; |
447 | ||
bb949fbd DM |
448 | struct netdev_queue { |
449 | struct net_device *dev; | |
b0e1e646 | 450 | struct Qdisc *qdisc; |
79d16385 | 451 | unsigned long state; |
c773e847 DM |
452 | spinlock_t _xmit_lock; |
453 | int xmit_lock_owner; | |
b0e1e646 | 454 | struct Qdisc *qdisc_sleeping; |
e8a0464c | 455 | } ____cacheline_aligned_in_smp; |
bb949fbd | 456 | |
d314774c SH |
457 | |
458 | /* | |
459 | * This structure defines the management hooks for network devices. | |
00829823 SH |
460 | * The following hooks can be defined; unless noted otherwise, they are |
461 | * optional and can be filled with a null pointer. | |
d314774c SH |
462 | * |
463 | * int (*ndo_init)(struct net_device *dev); | |
464 | * This function is called once when network device is registered. | |
465 | * The network device can use this to any late stage initializaton | |
466 | * or semantic validattion. It can fail with an error code which will | |
467 | * be propogated back to register_netdev | |
468 | * | |
469 | * void (*ndo_uninit)(struct net_device *dev); | |
470 | * This function is called when device is unregistered or when registration | |
471 | * fails. It is not called if init fails. | |
472 | * | |
473 | * int (*ndo_open)(struct net_device *dev); | |
474 | * This function is called when network device transistions to the up | |
475 | * state. | |
476 | * | |
477 | * int (*ndo_stop)(struct net_device *dev); | |
478 | * This function is called when network device transistions to the down | |
479 | * state. | |
480 | * | |
00829823 SH |
481 | * int (*ndo_hard_start_xmit)(struct sk_buff *skb, struct net_device *dev); |
482 | * Called when a packet needs to be transmitted. | |
483 | * Must return NETDEV_TX_OK , NETDEV_TX_BUSY, or NETDEV_TX_LOCKED, | |
484 | * Required can not be NULL. | |
485 | * | |
486 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb); | |
487 | * Called to decide which queue to when device supports multiple | |
488 | * transmit queues. | |
489 | * | |
d314774c SH |
490 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
491 | * This function is called to allow device receiver to make | |
492 | * changes to configuration when multicast or promiscious is enabled. | |
493 | * | |
494 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
495 | * This function is called device changes address list filtering. | |
496 | * | |
497 | * void (*ndo_set_multicast_list)(struct net_device *dev); | |
498 | * This function is called when the multicast address list changes. | |
499 | * | |
500 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
501 | * This function is called when the Media Access Control address | |
502 | * needs to be changed. If not this interface is not defined, the | |
503 | * mac address can not be changed. | |
504 | * | |
505 | * int (*ndo_validate_addr)(struct net_device *dev); | |
506 | * Test if Media Access Control address is valid for the device. | |
507 | * | |
508 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
509 | * Called when a user request an ioctl which can't be handled by | |
510 | * the generic interface code. If not defined ioctl's return | |
511 | * not supported error code. | |
512 | * | |
513 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); | |
514 | * Used to set network devices bus interface parameters. This interface | |
515 | * is retained for legacy reason, new devices should use the bus | |
516 | * interface (PCI) for low level management. | |
517 | * | |
518 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
519 | * Called when a user wants to change the Maximum Transfer Unit | |
520 | * of a device. If not defined, any request to change MTU will | |
521 | * will return an error. | |
522 | * | |
00829823 | 523 | * void (*ndo_tx_timeout)(struct net_device *dev); |
d314774c SH |
524 | * Callback uses when the transmitter has not made any progress |
525 | * for dev->watchdog ticks. | |
526 | * | |
527 | * struct net_device_stats* (*get_stats)(struct net_device *dev); | |
528 | * Called when a user wants to get the network device usage | |
529 | * statistics. If not defined, the counters in dev->stats will | |
530 | * be used. | |
531 | * | |
532 | * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp); | |
533 | * If device support VLAN receive accleration | |
534 | * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called | |
535 | * when vlan groups for the device changes. Note: grp is NULL | |
536 | * if no vlan's groups are being used. | |
537 | * | |
538 | * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid); | |
539 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
540 | * this function is called when a VLAN id is registered. | |
541 | * | |
542 | * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid); | |
543 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
544 | * this function is called when a VLAN id is unregistered. | |
545 | * | |
546 | * void (*ndo_poll_controller)(struct net_device *dev); | |
547 | */ | |
47fd5b83 | 548 | #define HAVE_NET_DEVICE_OPS |
d314774c SH |
549 | struct net_device_ops { |
550 | int (*ndo_init)(struct net_device *dev); | |
551 | void (*ndo_uninit)(struct net_device *dev); | |
552 | int (*ndo_open)(struct net_device *dev); | |
553 | int (*ndo_stop)(struct net_device *dev); | |
00829823 SH |
554 | int (*ndo_start_xmit) (struct sk_buff *skb, |
555 | struct net_device *dev); | |
556 | u16 (*ndo_select_queue)(struct net_device *dev, | |
557 | struct sk_buff *skb); | |
d314774c SH |
558 | #define HAVE_CHANGE_RX_FLAGS |
559 | void (*ndo_change_rx_flags)(struct net_device *dev, | |
560 | int flags); | |
561 | #define HAVE_SET_RX_MODE | |
562 | void (*ndo_set_rx_mode)(struct net_device *dev); | |
563 | #define HAVE_MULTICAST | |
564 | void (*ndo_set_multicast_list)(struct net_device *dev); | |
565 | #define HAVE_SET_MAC_ADDR | |
566 | int (*ndo_set_mac_address)(struct net_device *dev, | |
567 | void *addr); | |
568 | #define HAVE_VALIDATE_ADDR | |
569 | int (*ndo_validate_addr)(struct net_device *dev); | |
570 | #define HAVE_PRIVATE_IOCTL | |
571 | int (*ndo_do_ioctl)(struct net_device *dev, | |
572 | struct ifreq *ifr, int cmd); | |
573 | #define HAVE_SET_CONFIG | |
574 | int (*ndo_set_config)(struct net_device *dev, | |
575 | struct ifmap *map); | |
576 | #define HAVE_CHANGE_MTU | |
00829823 SH |
577 | int (*ndo_change_mtu)(struct net_device *dev, |
578 | int new_mtu); | |
579 | int (*ndo_neigh_setup)(struct net_device *dev, | |
580 | struct neigh_parms *); | |
d314774c SH |
581 | #define HAVE_TX_TIMEOUT |
582 | void (*ndo_tx_timeout) (struct net_device *dev); | |
583 | ||
584 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); | |
585 | ||
586 | void (*ndo_vlan_rx_register)(struct net_device *dev, | |
587 | struct vlan_group *grp); | |
588 | void (*ndo_vlan_rx_add_vid)(struct net_device *dev, | |
589 | unsigned short vid); | |
590 | void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, | |
591 | unsigned short vid); | |
592 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
593 | #define HAVE_NETDEV_POLL | |
594 | void (*ndo_poll_controller)(struct net_device *dev); | |
595 | #endif | |
596 | }; | |
597 | ||
1da177e4 LT |
598 | /* |
599 | * The DEVICE structure. | |
600 | * Actually, this whole structure is a big mistake. It mixes I/O | |
601 | * data with strictly "high-level" data, and it has to know about | |
602 | * almost every data structure used in the INET module. | |
603 | * | |
604 | * FIXME: cleanup struct net_device such that network protocol info | |
605 | * moves out. | |
606 | */ | |
607 | ||
608 | struct net_device | |
609 | { | |
610 | ||
611 | /* | |
612 | * This is the first field of the "visible" part of this structure | |
613 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
614 | * the interface. | |
615 | */ | |
616 | char name[IFNAMSIZ]; | |
9356b8fc ED |
617 | /* device name hash chain */ |
618 | struct hlist_node name_hlist; | |
0b815a1a SH |
619 | /* snmp alias */ |
620 | char *ifalias; | |
1da177e4 LT |
621 | |
622 | /* | |
623 | * I/O specific fields | |
624 | * FIXME: Merge these and struct ifmap into one | |
625 | */ | |
626 | unsigned long mem_end; /* shared mem end */ | |
627 | unsigned long mem_start; /* shared mem start */ | |
628 | unsigned long base_addr; /* device I/O address */ | |
629 | unsigned int irq; /* device IRQ number */ | |
630 | ||
631 | /* | |
632 | * Some hardware also needs these fields, but they are not | |
633 | * part of the usual set specified in Space.c. | |
634 | */ | |
635 | ||
636 | unsigned char if_port; /* Selectable AUI, TP,..*/ | |
637 | unsigned char dma; /* DMA channel */ | |
638 | ||
639 | unsigned long state; | |
640 | ||
7562f876 | 641 | struct list_head dev_list; |
bea3348e SH |
642 | #ifdef CONFIG_NETPOLL |
643 | struct list_head napi_list; | |
644 | #endif | |
1da177e4 | 645 | |
9356b8fc ED |
646 | /* Net device features */ |
647 | unsigned long features; | |
648 | #define NETIF_F_SG 1 /* Scatter/gather IO. */ | |
d212f87b | 649 | #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ |
9356b8fc ED |
650 | #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ |
651 | #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ | |
d212f87b | 652 | #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ |
9356b8fc ED |
653 | #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ |
654 | #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ | |
655 | #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ | |
656 | #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ | |
657 | #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ | |
658 | #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ | |
37c3185a | 659 | #define NETIF_F_GSO 2048 /* Enable software GSO. */ |
e24eb521 CB |
660 | #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ |
661 | /* do not use LLTX in new drivers */ | |
ce286d32 | 662 | #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ |
3ae7c0b2 | 663 | #define NETIF_F_LRO 32768 /* large receive offload */ |
7967168c HX |
664 | |
665 | /* Segmentation offload features */ | |
289c79a4 PM |
666 | #define NETIF_F_GSO_SHIFT 16 |
667 | #define NETIF_F_GSO_MASK 0xffff0000 | |
7967168c | 668 | #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) |
f83ef8c0 | 669 | #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) |
576a30eb | 670 | #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) |
f83ef8c0 HX |
671 | #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) |
672 | #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) | |
9356b8fc | 673 | |
78eb8877 HX |
674 | /* List of features with software fallbacks. */ |
675 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) | |
676 | ||
d212f87b | 677 | |
8648b305 | 678 | #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) |
d212f87b SH |
679 | #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) |
680 | #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) | |
681 | #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) | |
8648b305 | 682 | |
b63365a2 HX |
683 | /* |
684 | * If one device supports one of these features, then enable them | |
685 | * for all in netdev_increment_features. | |
686 | */ | |
687 | #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ | |
d314774c | 688 | NETIF_F_SG | NETIF_F_HIGHDMA | \ |
b63365a2 HX |
689 | NETIF_F_FRAGLIST) |
690 | ||
1da177e4 LT |
691 | /* Interface index. Unique device identifier */ |
692 | int ifindex; | |
693 | int iflink; | |
694 | ||
c45d286e | 695 | struct net_device_stats stats; |
1da177e4 | 696 | |
b86e0280 | 697 | #ifdef CONFIG_WIRELESS_EXT |
1da177e4 LT |
698 | /* List of functions to handle Wireless Extensions (instead of ioctl). |
699 | * See <net/iw_handler.h> for details. Jean II */ | |
700 | const struct iw_handler_def * wireless_handlers; | |
701 | /* Instance data managed by the core of Wireless Extensions. */ | |
702 | struct iw_public_data * wireless_data; | |
b86e0280 | 703 | #endif |
d314774c SH |
704 | /* Management operations */ |
705 | const struct net_device_ops *netdev_ops; | |
76fd8593 | 706 | const struct ethtool_ops *ethtool_ops; |
1da177e4 | 707 | |
3b04ddde SH |
708 | /* Hardware header description */ |
709 | const struct header_ops *header_ops; | |
710 | ||
b00055aa | 711 | unsigned int flags; /* interface flags (a la BSD) */ |
1da177e4 LT |
712 | unsigned short gflags; |
713 | unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */ | |
714 | unsigned short padded; /* How much padding added by alloc_netdev() */ | |
715 | ||
b00055aa SR |
716 | unsigned char operstate; /* RFC2863 operstate */ |
717 | unsigned char link_mode; /* mapping policy to operstate */ | |
718 | ||
1da177e4 LT |
719 | unsigned mtu; /* interface MTU value */ |
720 | unsigned short type; /* interface hardware type */ | |
721 | unsigned short hard_header_len; /* hardware hdr length */ | |
1da177e4 | 722 | |
f5184d26 JB |
723 | /* extra head- and tailroom the hardware may need, but not in all cases |
724 | * can this be guaranteed, especially tailroom. Some cases also use | |
725 | * LL_MAX_HEADER instead to allocate the skb. | |
726 | */ | |
727 | unsigned short needed_headroom; | |
728 | unsigned short needed_tailroom; | |
729 | ||
1da177e4 LT |
730 | struct net_device *master; /* Pointer to master device of a group, |
731 | * which this device is member of. | |
732 | */ | |
733 | ||
734 | /* Interface address info. */ | |
a6f9a705 | 735 | unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ |
1da177e4 LT |
736 | unsigned char addr_len; /* hardware address length */ |
737 | unsigned short dev_id; /* for shared network cards */ | |
738 | ||
f1f28aa3 | 739 | spinlock_t addr_list_lock; |
4417da66 PM |
740 | struct dev_addr_list *uc_list; /* Secondary unicast mac addresses */ |
741 | int uc_count; /* Number of installed ucasts */ | |
742 | int uc_promisc; | |
3fba5a8b | 743 | struct dev_addr_list *mc_list; /* Multicast mac addresses */ |
1da177e4 | 744 | int mc_count; /* Number of installed mcasts */ |
9d45abe1 WC |
745 | unsigned int promiscuity; |
746 | unsigned int allmulti; | |
1da177e4 | 747 | |
1da177e4 LT |
748 | |
749 | /* Protocol specific pointers */ | |
750 | ||
91da11f8 LB |
751 | #ifdef CONFIG_NET_DSA |
752 | void *dsa_ptr; /* dsa specific data */ | |
753 | #endif | |
1da177e4 LT |
754 | void *atalk_ptr; /* AppleTalk link */ |
755 | void *ip_ptr; /* IPv4 specific data */ | |
756 | void *dn_ptr; /* DECnet specific data */ | |
757 | void *ip6_ptr; /* IPv6 specific data */ | |
758 | void *ec_ptr; /* Econet specific data */ | |
759 | void *ax25_ptr; /* AX.25 specific data */ | |
704232c2 JB |
760 | struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, |
761 | assign before registering */ | |
1da177e4 | 762 | |
9356b8fc ED |
763 | /* |
764 | * Cache line mostly used on receive path (including eth_type_trans()) | |
765 | */ | |
9356b8fc ED |
766 | unsigned long last_rx; /* Time of last Rx */ |
767 | /* Interface address info used in eth_type_trans() */ | |
768 | unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast | |
d314774c | 769 | because most packets are unicast) */ |
9356b8fc ED |
770 | |
771 | unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ | |
1da177e4 | 772 | |
bb949fbd | 773 | struct netdev_queue rx_queue; |
e8a0464c DM |
774 | |
775 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; | |
fd2ea0a7 DM |
776 | |
777 | /* Number of TX queues allocated at alloc_netdev_mq() time */ | |
e8a0464c | 778 | unsigned int num_tx_queues; |
fd2ea0a7 DM |
779 | |
780 | /* Number of TX queues currently active in device */ | |
781 | unsigned int real_num_tx_queues; | |
782 | ||
1da177e4 | 783 | unsigned long tx_queue_len; /* Max frames per queue allowed */ |
c3f26a26 | 784 | spinlock_t tx_global_lock; |
9356b8fc ED |
785 | /* |
786 | * One part is mostly used on xmit path (device) | |
787 | */ | |
9356b8fc | 788 | void *priv; /* pointer to private data */ |
9356b8fc ED |
789 | /* These may be needed for future network-power-down code. */ |
790 | unsigned long trans_start; /* Time (in jiffies) of last Tx */ | |
791 | ||
792 | int watchdog_timeo; /* used by dev_watchdog() */ | |
793 | struct timer_list watchdog_timer; | |
794 | ||
1da177e4 | 795 | /* Number of references to this device */ |
9356b8fc ED |
796 | atomic_t refcnt ____cacheline_aligned_in_smp; |
797 | ||
1da177e4 LT |
798 | /* delayed register/unregister */ |
799 | struct list_head todo_list; | |
1da177e4 LT |
800 | /* device index hash chain */ |
801 | struct hlist_node index_hlist; | |
802 | ||
572a103d HX |
803 | struct net_device *link_watch_next; |
804 | ||
1da177e4 LT |
805 | /* register/unregister state machine */ |
806 | enum { NETREG_UNINITIALIZED=0, | |
b17a7c17 | 807 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
808 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
809 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
810 | NETREG_RELEASED, /* called free_netdev */ | |
811 | } reg_state; | |
812 | ||
d314774c SH |
813 | /* Called from unregister, can be used to call free_netdev */ |
814 | void (*destructor)(struct net_device *dev); | |
1da177e4 | 815 | |
1da177e4 | 816 | #ifdef CONFIG_NETPOLL |
115c1d6e | 817 | struct netpoll_info *npinfo; |
1da177e4 | 818 | #endif |
eae792b7 | 819 | |
c346dca1 | 820 | #ifdef CONFIG_NET_NS |
4a1c5371 EB |
821 | /* Network namespace this network device is inside */ |
822 | struct net *nd_net; | |
c346dca1 | 823 | #endif |
4a1c5371 | 824 | |
4951704b DM |
825 | /* mid-layer private */ |
826 | void *ml_priv; | |
827 | ||
1da177e4 LT |
828 | /* bridge stuff */ |
829 | struct net_bridge_port *br_port; | |
b863ceb7 PM |
830 | /* macvlan */ |
831 | struct macvlan_port *macvlan_port; | |
eca9ebac PM |
832 | /* GARP */ |
833 | struct garp_port *garp_port; | |
1da177e4 | 834 | |
1da177e4 | 835 | /* class/net/name entry */ |
43cb76d9 | 836 | struct device dev; |
fe9925b5 SH |
837 | /* space for optional statistics and wireless sysfs groups */ |
838 | struct attribute_group *sysfs_groups[3]; | |
38f7b870 PM |
839 | |
840 | /* rtnetlink link ops */ | |
841 | const struct rtnl_link_ops *rtnl_link_ops; | |
f25f4e44 | 842 | |
289c79a4 PM |
843 | /* VLAN feature mask */ |
844 | unsigned long vlan_features; | |
845 | ||
82cc1a7a PWJ |
846 | /* for setting kernel sock attribute on TCP connection setup */ |
847 | #define GSO_MAX_SIZE 65536 | |
848 | unsigned int gso_max_size; | |
d314774c | 849 | |
2f90b865 AD |
850 | #ifdef CONFIG_DCBNL |
851 | /* Data Center Bridging netlink ops */ | |
852 | struct dcbnl_rtnl_ops *dcbnl_ops; | |
853 | #endif | |
854 | ||
d314774c SH |
855 | #ifdef CONFIG_COMPAT_NET_DEV_OPS |
856 | struct { | |
857 | int (*init)(struct net_device *dev); | |
858 | void (*uninit)(struct net_device *dev); | |
859 | int (*open)(struct net_device *dev); | |
860 | int (*stop)(struct net_device *dev); | |
00829823 SH |
861 | int (*hard_start_xmit) (struct sk_buff *skb, |
862 | struct net_device *dev); | |
863 | u16 (*select_queue)(struct net_device *dev, | |
864 | struct sk_buff *skb); | |
d314774c SH |
865 | void (*change_rx_flags)(struct net_device *dev, |
866 | int flags); | |
867 | void (*set_rx_mode)(struct net_device *dev); | |
868 | void (*set_multicast_list)(struct net_device *dev); | |
869 | int (*set_mac_address)(struct net_device *dev, | |
870 | void *addr); | |
871 | int (*validate_addr)(struct net_device *dev); | |
872 | int (*do_ioctl)(struct net_device *dev, | |
873 | struct ifreq *ifr, int cmd); | |
874 | int (*set_config)(struct net_device *dev, | |
875 | struct ifmap *map); | |
876 | int (*change_mtu)(struct net_device *dev, int new_mtu); | |
00829823 SH |
877 | int (*neigh_setup)(struct net_device *dev, |
878 | struct neigh_parms *); | |
d314774c SH |
879 | void (*tx_timeout) (struct net_device *dev); |
880 | struct net_device_stats* (*get_stats)(struct net_device *dev); | |
881 | void (*vlan_rx_register)(struct net_device *dev, | |
882 | struct vlan_group *grp); | |
883 | void (*vlan_rx_add_vid)(struct net_device *dev, | |
884 | unsigned short vid); | |
885 | void (*vlan_rx_kill_vid)(struct net_device *dev, | |
886 | unsigned short vid); | |
887 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
888 | void (*poll_controller)(struct net_device *dev); | |
d314774c SH |
889 | #endif |
890 | }; | |
eeda3fd6 | 891 | #endif |
1da177e4 | 892 | }; |
43cb76d9 | 893 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 LT |
894 | |
895 | #define NETDEV_ALIGN 32 | |
896 | #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1) | |
897 | ||
e8a0464c DM |
898 | static inline |
899 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
900 | unsigned int index) | |
901 | { | |
902 | return &dev->_tx[index]; | |
903 | } | |
904 | ||
905 | static inline void netdev_for_each_tx_queue(struct net_device *dev, | |
906 | void (*f)(struct net_device *, | |
907 | struct netdev_queue *, | |
908 | void *), | |
909 | void *arg) | |
910 | { | |
911 | unsigned int i; | |
912 | ||
913 | for (i = 0; i < dev->num_tx_queues; i++) | |
914 | f(dev, &dev->_tx[i], arg); | |
915 | } | |
916 | ||
c346dca1 YH |
917 | /* |
918 | * Net namespace inlines | |
919 | */ | |
920 | static inline | |
921 | struct net *dev_net(const struct net_device *dev) | |
922 | { | |
923 | #ifdef CONFIG_NET_NS | |
924 | return dev->nd_net; | |
925 | #else | |
926 | return &init_net; | |
927 | #endif | |
928 | } | |
929 | ||
930 | static inline | |
f5aa23fd | 931 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 YH |
932 | { |
933 | #ifdef CONFIG_NET_NS | |
f3005d7f DL |
934 | release_net(dev->nd_net); |
935 | dev->nd_net = hold_net(net); | |
c346dca1 YH |
936 | #endif |
937 | } | |
938 | ||
cf85d08f LB |
939 | static inline bool netdev_uses_dsa_tags(struct net_device *dev) |
940 | { | |
941 | #ifdef CONFIG_NET_DSA_TAG_DSA | |
942 | if (dev->dsa_ptr != NULL) | |
943 | return dsa_uses_dsa_tags(dev->dsa_ptr); | |
944 | #endif | |
945 | ||
946 | return 0; | |
947 | } | |
948 | ||
396138f0 LB |
949 | static inline bool netdev_uses_trailer_tags(struct net_device *dev) |
950 | { | |
951 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
952 | if (dev->dsa_ptr != NULL) | |
953 | return dsa_uses_trailer_tags(dev->dsa_ptr); | |
954 | #endif | |
955 | ||
956 | return 0; | |
957 | } | |
958 | ||
bea3348e SH |
959 | /** |
960 | * netdev_priv - access network device private data | |
961 | * @dev: network device | |
962 | * | |
963 | * Get network device private data | |
964 | */ | |
6472ce60 | 965 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 966 | { |
e3c50d5d DM |
967 | return (char *)dev + ((sizeof(struct net_device) |
968 | + NETDEV_ALIGN_CONST) | |
969 | & ~NETDEV_ALIGN_CONST); | |
1da177e4 LT |
970 | } |
971 | ||
1da177e4 LT |
972 | /* Set the sysfs physical device reference for the network logical device |
973 | * if set prior to registration will cause a symlink during initialization. | |
974 | */ | |
43cb76d9 | 975 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 976 | |
3b582cc1 SH |
977 | /** |
978 | * netif_napi_add - initialize a napi context | |
979 | * @dev: network device | |
980 | * @napi: napi context | |
981 | * @poll: polling function | |
982 | * @weight: default weight | |
983 | * | |
984 | * netif_napi_add() must be used to initialize a napi context prior to calling | |
985 | * *any* of the other napi related functions. | |
986 | */ | |
bea3348e SH |
987 | static inline void netif_napi_add(struct net_device *dev, |
988 | struct napi_struct *napi, | |
989 | int (*poll)(struct napi_struct *, int), | |
990 | int weight) | |
991 | { | |
992 | INIT_LIST_HEAD(&napi->poll_list); | |
993 | napi->poll = poll; | |
994 | napi->weight = weight; | |
995 | #ifdef CONFIG_NETPOLL | |
996 | napi->dev = dev; | |
997 | list_add(&napi->dev_list, &dev->napi_list); | |
998 | spin_lock_init(&napi->poll_lock); | |
999 | napi->poll_owner = -1; | |
1000 | #endif | |
1001 | set_bit(NAPI_STATE_SCHED, &napi->state); | |
1002 | } | |
1003 | ||
d8156534 AD |
1004 | /** |
1005 | * netif_napi_del - remove a napi context | |
1006 | * @napi: napi context | |
1007 | * | |
1008 | * netif_napi_del() removes a napi context from the network device napi list | |
1009 | */ | |
1010 | static inline void netif_napi_del(struct napi_struct *napi) | |
1011 | { | |
1012 | #ifdef CONFIG_NETPOLL | |
1013 | list_del(&napi->dev_list); | |
1014 | #endif | |
1015 | } | |
1016 | ||
1da177e4 | 1017 | struct packet_type { |
f2ccd8fa DM |
1018 | __be16 type; /* This is really htons(ether_type). */ |
1019 | struct net_device *dev; /* NULL is wildcarded here */ | |
1020 | int (*func) (struct sk_buff *, | |
1021 | struct net_device *, | |
1022 | struct packet_type *, | |
1023 | struct net_device *); | |
576a30eb HX |
1024 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
1025 | int features); | |
a430a43d | 1026 | int (*gso_send_check)(struct sk_buff *skb); |
1da177e4 LT |
1027 | void *af_packet_priv; |
1028 | struct list_head list; | |
1029 | }; | |
1030 | ||
1031 | #include <linux/interrupt.h> | |
1032 | #include <linux/notifier.h> | |
1033 | ||
1da177e4 LT |
1034 | extern rwlock_t dev_base_lock; /* Device list lock */ |
1035 | ||
7562f876 | 1036 | |
881d966b EB |
1037 | #define for_each_netdev(net, d) \ |
1038 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
1039 | #define for_each_netdev_safe(net, d, n) \ | |
1040 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
1041 | #define for_each_netdev_continue(net, d) \ | |
1042 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
1043 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) | |
7562f876 | 1044 | |
a050c33f DL |
1045 | static inline struct net_device *next_net_device(struct net_device *dev) |
1046 | { | |
1047 | struct list_head *lh; | |
1048 | struct net *net; | |
1049 | ||
c346dca1 | 1050 | net = dev_net(dev); |
a050c33f DL |
1051 | lh = dev->dev_list.next; |
1052 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
1053 | } | |
1054 | ||
1055 | static inline struct net_device *first_net_device(struct net *net) | |
1056 | { | |
1057 | return list_empty(&net->dev_base_head) ? NULL : | |
1058 | net_device_entry(net->dev_base_head.next); | |
1059 | } | |
7562f876 | 1060 | |
1da177e4 LT |
1061 | extern int netdev_boot_setup_check(struct net_device *dev); |
1062 | extern unsigned long netdev_boot_base(const char *prefix, int unit); | |
881d966b EB |
1063 | extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr); |
1064 | extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1065 | extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1da177e4 LT |
1066 | extern void dev_add_pack(struct packet_type *pt); |
1067 | extern void dev_remove_pack(struct packet_type *pt); | |
1068 | extern void __dev_remove_pack(struct packet_type *pt); | |
1069 | ||
881d966b | 1070 | extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags, |
1da177e4 | 1071 | unsigned short mask); |
881d966b EB |
1072 | extern struct net_device *dev_get_by_name(struct net *net, const char *name); |
1073 | extern struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
1da177e4 LT |
1074 | extern int dev_alloc_name(struct net_device *dev, const char *name); |
1075 | extern int dev_open(struct net_device *dev); | |
1076 | extern int dev_close(struct net_device *dev); | |
0187bdfb | 1077 | extern void dev_disable_lro(struct net_device *dev); |
1da177e4 LT |
1078 | extern int dev_queue_xmit(struct sk_buff *skb); |
1079 | extern int register_netdevice(struct net_device *dev); | |
22f8cde5 | 1080 | extern void unregister_netdevice(struct net_device *dev); |
1da177e4 LT |
1081 | extern void free_netdev(struct net_device *dev); |
1082 | extern void synchronize_net(void); | |
1083 | extern int register_netdevice_notifier(struct notifier_block *nb); | |
1084 | extern int unregister_netdevice_notifier(struct notifier_block *nb); | |
ad7379d4 | 1085 | extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
881d966b EB |
1086 | extern struct net_device *dev_get_by_index(struct net *net, int ifindex); |
1087 | extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
1da177e4 LT |
1088 | extern int dev_restart(struct net_device *dev); |
1089 | #ifdef CONFIG_NETPOLL_TRAP | |
1090 | extern int netpoll_trap(void); | |
1091 | #endif | |
1092 | ||
0c4e8581 SH |
1093 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
1094 | unsigned short type, | |
3b04ddde SH |
1095 | const void *daddr, const void *saddr, |
1096 | unsigned len) | |
0c4e8581 | 1097 | { |
f1ecfd5d | 1098 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 1099 | return 0; |
3b04ddde SH |
1100 | |
1101 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
1102 | } |
1103 | ||
b95cce35 SH |
1104 | static inline int dev_parse_header(const struct sk_buff *skb, |
1105 | unsigned char *haddr) | |
1106 | { | |
1107 | const struct net_device *dev = skb->dev; | |
1108 | ||
1b83336b | 1109 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 1110 | return 0; |
3b04ddde | 1111 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
1112 | } |
1113 | ||
1da177e4 LT |
1114 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
1115 | extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); | |
1116 | static inline int unregister_gifconf(unsigned int family) | |
1117 | { | |
1118 | return register_gifconf(family, NULL); | |
1119 | } | |
1120 | ||
1121 | /* | |
1122 | * Incoming packets are placed on per-cpu queues so that | |
1123 | * no locking is needed. | |
1124 | */ | |
1da177e4 LT |
1125 | struct softnet_data |
1126 | { | |
37437bb2 | 1127 | struct Qdisc *output_queue; |
1da177e4 LT |
1128 | struct sk_buff_head input_pkt_queue; |
1129 | struct list_head poll_list; | |
1da177e4 LT |
1130 | struct sk_buff *completion_queue; |
1131 | ||
bea3348e | 1132 | struct napi_struct backlog; |
db217334 CL |
1133 | #ifdef CONFIG_NET_DMA |
1134 | struct dma_chan *net_dma; | |
1135 | #endif | |
1da177e4 LT |
1136 | }; |
1137 | ||
1138 | DECLARE_PER_CPU(struct softnet_data,softnet_data); | |
1139 | ||
1140 | #define HAVE_NETIF_QUEUE | |
1141 | ||
37437bb2 | 1142 | extern void __netif_schedule(struct Qdisc *q); |
1da177e4 | 1143 | |
86d804e1 | 1144 | static inline void netif_schedule_queue(struct netdev_queue *txq) |
1da177e4 | 1145 | { |
79d16385 | 1146 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1147 | __netif_schedule(txq->qdisc); |
86d804e1 DM |
1148 | } |
1149 | ||
fd2ea0a7 DM |
1150 | static inline void netif_tx_schedule_all(struct net_device *dev) |
1151 | { | |
1152 | unsigned int i; | |
1153 | ||
1154 | for (i = 0; i < dev->num_tx_queues; i++) | |
1155 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
1156 | } | |
1157 | ||
d29f749e DJ |
1158 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
1159 | { | |
1160 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1161 | } | |
1162 | ||
bea3348e SH |
1163 | /** |
1164 | * netif_start_queue - allow transmit | |
1165 | * @dev: network device | |
1166 | * | |
1167 | * Allow upper layers to call the device hard_start_xmit routine. | |
1168 | */ | |
1da177e4 LT |
1169 | static inline void netif_start_queue(struct net_device *dev) |
1170 | { | |
e8a0464c | 1171 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1172 | } |
1173 | ||
fd2ea0a7 DM |
1174 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
1175 | { | |
1176 | unsigned int i; | |
1177 | ||
1178 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1179 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1180 | netif_tx_start_queue(txq); | |
1181 | } | |
1182 | } | |
1183 | ||
79d16385 | 1184 | static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) |
1da177e4 LT |
1185 | { |
1186 | #ifdef CONFIG_NETPOLL_TRAP | |
5f286e11 | 1187 | if (netpoll_trap()) { |
79d16385 | 1188 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); |
1da177e4 | 1189 | return; |
5f286e11 | 1190 | } |
1da177e4 | 1191 | #endif |
79d16385 | 1192 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state)) |
37437bb2 | 1193 | __netif_schedule(dev_queue->qdisc); |
79d16385 DM |
1194 | } |
1195 | ||
d29f749e DJ |
1196 | /** |
1197 | * netif_wake_queue - restart transmit | |
1198 | * @dev: network device | |
1199 | * | |
1200 | * Allow upper layers to call the device hard_start_xmit routine. | |
1201 | * Used for flow control when transmit resources are available. | |
1202 | */ | |
79d16385 DM |
1203 | static inline void netif_wake_queue(struct net_device *dev) |
1204 | { | |
e8a0464c | 1205 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1206 | } |
1207 | ||
fd2ea0a7 DM |
1208 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
1209 | { | |
1210 | unsigned int i; | |
1211 | ||
1212 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1213 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1214 | netif_tx_wake_queue(txq); | |
1215 | } | |
1216 | } | |
1217 | ||
d29f749e DJ |
1218 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
1219 | { | |
1220 | set_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1221 | } | |
1222 | ||
bea3348e SH |
1223 | /** |
1224 | * netif_stop_queue - stop transmitted packets | |
1225 | * @dev: network device | |
1226 | * | |
1227 | * Stop upper layers calling the device hard_start_xmit routine. | |
1228 | * Used for flow control when transmit resources are unavailable. | |
1229 | */ | |
1da177e4 LT |
1230 | static inline void netif_stop_queue(struct net_device *dev) |
1231 | { | |
e8a0464c | 1232 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1233 | } |
1234 | ||
fd2ea0a7 DM |
1235 | static inline void netif_tx_stop_all_queues(struct net_device *dev) |
1236 | { | |
1237 | unsigned int i; | |
1238 | ||
1239 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1240 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1241 | netif_tx_stop_queue(txq); | |
1242 | } | |
1243 | } | |
1244 | ||
d29f749e DJ |
1245 | static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
1246 | { | |
1247 | return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1248 | } | |
1249 | ||
bea3348e SH |
1250 | /** |
1251 | * netif_queue_stopped - test if transmit queue is flowblocked | |
1252 | * @dev: network device | |
1253 | * | |
1254 | * Test if transmit queue on device is currently unable to send. | |
1255 | */ | |
1da177e4 LT |
1256 | static inline int netif_queue_stopped(const struct net_device *dev) |
1257 | { | |
e8a0464c | 1258 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1259 | } |
1260 | ||
c3f26a26 DM |
1261 | static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue) |
1262 | { | |
1263 | return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state); | |
1264 | } | |
1265 | ||
bea3348e SH |
1266 | /** |
1267 | * netif_running - test if up | |
1268 | * @dev: network device | |
1269 | * | |
1270 | * Test if the device has been brought up. | |
1271 | */ | |
1da177e4 LT |
1272 | static inline int netif_running(const struct net_device *dev) |
1273 | { | |
1274 | return test_bit(__LINK_STATE_START, &dev->state); | |
1275 | } | |
1276 | ||
f25f4e44 PWJ |
1277 | /* |
1278 | * Routines to manage the subqueues on a device. We only need start | |
1279 | * stop, and a check if it's stopped. All other device management is | |
1280 | * done at the overall netdevice level. | |
1281 | * Also test the device if we're multiqueue. | |
1282 | */ | |
bea3348e SH |
1283 | |
1284 | /** | |
1285 | * netif_start_subqueue - allow sending packets on subqueue | |
1286 | * @dev: network device | |
1287 | * @queue_index: sub queue index | |
1288 | * | |
1289 | * Start individual transmit queue of a device with multiple transmit queues. | |
1290 | */ | |
f25f4e44 PWJ |
1291 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
1292 | { | |
fd2ea0a7 DM |
1293 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
1294 | clear_bit(__QUEUE_STATE_XOFF, &txq->state); | |
f25f4e44 PWJ |
1295 | } |
1296 | ||
bea3348e SH |
1297 | /** |
1298 | * netif_stop_subqueue - stop sending packets on subqueue | |
1299 | * @dev: network device | |
1300 | * @queue_index: sub queue index | |
1301 | * | |
1302 | * Stop individual transmit queue of a device with multiple transmit queues. | |
1303 | */ | |
f25f4e44 PWJ |
1304 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
1305 | { | |
fd2ea0a7 | 1306 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1307 | #ifdef CONFIG_NETPOLL_TRAP |
1308 | if (netpoll_trap()) | |
1309 | return; | |
1310 | #endif | |
fd2ea0a7 | 1311 | set_bit(__QUEUE_STATE_XOFF, &txq->state); |
f25f4e44 PWJ |
1312 | } |
1313 | ||
bea3348e SH |
1314 | /** |
1315 | * netif_subqueue_stopped - test status of subqueue | |
1316 | * @dev: network device | |
1317 | * @queue_index: sub queue index | |
1318 | * | |
1319 | * Check individual transmit queue of a device with multiple transmit queues. | |
1320 | */ | |
668f895a | 1321 | static inline int __netif_subqueue_stopped(const struct net_device *dev, |
f25f4e44 PWJ |
1322 | u16 queue_index) |
1323 | { | |
fd2ea0a7 DM |
1324 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
1325 | return test_bit(__QUEUE_STATE_XOFF, &txq->state); | |
f25f4e44 PWJ |
1326 | } |
1327 | ||
668f895a PE |
1328 | static inline int netif_subqueue_stopped(const struct net_device *dev, |
1329 | struct sk_buff *skb) | |
1330 | { | |
1331 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
1332 | } | |
bea3348e SH |
1333 | |
1334 | /** | |
1335 | * netif_wake_subqueue - allow sending packets on subqueue | |
1336 | * @dev: network device | |
1337 | * @queue_index: sub queue index | |
1338 | * | |
1339 | * Resume individual transmit queue of a device with multiple transmit queues. | |
1340 | */ | |
f25f4e44 PWJ |
1341 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) |
1342 | { | |
fd2ea0a7 | 1343 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1344 | #ifdef CONFIG_NETPOLL_TRAP |
1345 | if (netpoll_trap()) | |
1346 | return; | |
1347 | #endif | |
fd2ea0a7 | 1348 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1349 | __netif_schedule(txq->qdisc); |
f25f4e44 PWJ |
1350 | } |
1351 | ||
bea3348e SH |
1352 | /** |
1353 | * netif_is_multiqueue - test if device has multiple transmit queues | |
1354 | * @dev: network device | |
1355 | * | |
1356 | * Check if device has multiple transmit queues | |
bea3348e | 1357 | */ |
f25f4e44 PWJ |
1358 | static inline int netif_is_multiqueue(const struct net_device *dev) |
1359 | { | |
09e83b5d | 1360 | return (dev->num_tx_queues > 1); |
f25f4e44 | 1361 | } |
1da177e4 LT |
1362 | |
1363 | /* Use this variant when it is known for sure that it | |
0ef47309 ML |
1364 | * is executing from hardware interrupt context or with hardware interrupts |
1365 | * disabled. | |
1da177e4 | 1366 | */ |
bea3348e | 1367 | extern void dev_kfree_skb_irq(struct sk_buff *skb); |
1da177e4 LT |
1368 | |
1369 | /* Use this variant in places where it could be invoked | |
0ef47309 ML |
1370 | * from either hardware interrupt or other context, with hardware interrupts |
1371 | * either disabled or enabled. | |
1da177e4 | 1372 | */ |
56079431 | 1373 | extern void dev_kfree_skb_any(struct sk_buff *skb); |
1da177e4 LT |
1374 | |
1375 | #define HAVE_NETIF_RX 1 | |
1376 | extern int netif_rx(struct sk_buff *skb); | |
1377 | extern int netif_rx_ni(struct sk_buff *skb); | |
1378 | #define HAVE_NETIF_RECEIVE_SKB 1 | |
1379 | extern int netif_receive_skb(struct sk_buff *skb); | |
bc1d0411 | 1380 | extern void netif_nit_deliver(struct sk_buff *skb); |
c2373ee9 | 1381 | extern int dev_valid_name(const char *name); |
881d966b EB |
1382 | extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); |
1383 | extern int dev_ethtool(struct net *net, struct ifreq *); | |
1da177e4 LT |
1384 | extern unsigned dev_get_flags(const struct net_device *); |
1385 | extern int dev_change_flags(struct net_device *, unsigned); | |
cf04a4c7 | 1386 | extern int dev_change_name(struct net_device *, const char *); |
0b815a1a | 1387 | extern int dev_set_alias(struct net_device *, const char *, size_t); |
ce286d32 EB |
1388 | extern int dev_change_net_namespace(struct net_device *, |
1389 | struct net *, const char *); | |
1da177e4 LT |
1390 | extern int dev_set_mtu(struct net_device *, int); |
1391 | extern int dev_set_mac_address(struct net_device *, | |
1392 | struct sockaddr *); | |
f6a78bfc | 1393 | extern int dev_hard_start_xmit(struct sk_buff *skb, |
fd2ea0a7 DM |
1394 | struct net_device *dev, |
1395 | struct netdev_queue *txq); | |
1da177e4 | 1396 | |
20380731 | 1397 | extern int netdev_budget; |
1da177e4 LT |
1398 | |
1399 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
1400 | extern void netdev_run_todo(void); | |
1401 | ||
bea3348e SH |
1402 | /** |
1403 | * dev_put - release reference to device | |
1404 | * @dev: network device | |
1405 | * | |
9ef4429b | 1406 | * Release reference to device to allow it to be freed. |
bea3348e | 1407 | */ |
1da177e4 LT |
1408 | static inline void dev_put(struct net_device *dev) |
1409 | { | |
1410 | atomic_dec(&dev->refcnt); | |
1411 | } | |
1412 | ||
bea3348e SH |
1413 | /** |
1414 | * dev_hold - get reference to device | |
1415 | * @dev: network device | |
1416 | * | |
9ef4429b | 1417 | * Hold reference to device to keep it from being freed. |
bea3348e | 1418 | */ |
15333061 SH |
1419 | static inline void dev_hold(struct net_device *dev) |
1420 | { | |
1421 | atomic_inc(&dev->refcnt); | |
1422 | } | |
1da177e4 LT |
1423 | |
1424 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
1425 | * and _off may be called from IRQ context, but it is caller | |
1426 | * who is responsible for serialization of these calls. | |
b00055aa SR |
1427 | * |
1428 | * The name carrier is inappropriate, these functions should really be | |
1429 | * called netif_lowerlayer_*() because they represent the state of any | |
1430 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
1431 | */ |
1432 | ||
1433 | extern void linkwatch_fire_event(struct net_device *dev); | |
1434 | ||
bea3348e SH |
1435 | /** |
1436 | * netif_carrier_ok - test if carrier present | |
1437 | * @dev: network device | |
1438 | * | |
1439 | * Check if carrier is present on device | |
1440 | */ | |
1da177e4 LT |
1441 | static inline int netif_carrier_ok(const struct net_device *dev) |
1442 | { | |
1443 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
1444 | } | |
1445 | ||
1446 | extern void __netdev_watchdog_up(struct net_device *dev); | |
1447 | ||
0a242efc | 1448 | extern void netif_carrier_on(struct net_device *dev); |
1da177e4 | 1449 | |
0a242efc | 1450 | extern void netif_carrier_off(struct net_device *dev); |
1da177e4 | 1451 | |
bea3348e SH |
1452 | /** |
1453 | * netif_dormant_on - mark device as dormant. | |
1454 | * @dev: network device | |
1455 | * | |
1456 | * Mark device as dormant (as per RFC2863). | |
1457 | * | |
1458 | * The dormant state indicates that the relevant interface is not | |
1459 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
1460 | * in a "pending" state, waiting for some external event. For "on- | |
1461 | * demand" interfaces, this new state identifies the situation where the | |
1462 | * interface is waiting for events to place it in the up state. | |
1463 | * | |
1464 | */ | |
b00055aa SR |
1465 | static inline void netif_dormant_on(struct net_device *dev) |
1466 | { | |
1467 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1468 | linkwatch_fire_event(dev); | |
1469 | } | |
1470 | ||
bea3348e SH |
1471 | /** |
1472 | * netif_dormant_off - set device as not dormant. | |
1473 | * @dev: network device | |
1474 | * | |
1475 | * Device is not in dormant state. | |
1476 | */ | |
b00055aa SR |
1477 | static inline void netif_dormant_off(struct net_device *dev) |
1478 | { | |
1479 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1480 | linkwatch_fire_event(dev); | |
1481 | } | |
1482 | ||
bea3348e SH |
1483 | /** |
1484 | * netif_dormant - test if carrier present | |
1485 | * @dev: network device | |
1486 | * | |
1487 | * Check if carrier is present on device | |
1488 | */ | |
b00055aa SR |
1489 | static inline int netif_dormant(const struct net_device *dev) |
1490 | { | |
1491 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
1492 | } | |
1493 | ||
1494 | ||
bea3348e SH |
1495 | /** |
1496 | * netif_oper_up - test if device is operational | |
1497 | * @dev: network device | |
1498 | * | |
1499 | * Check if carrier is operational | |
1500 | */ | |
b00055aa SR |
1501 | static inline int netif_oper_up(const struct net_device *dev) { |
1502 | return (dev->operstate == IF_OPER_UP || | |
1503 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
1504 | } | |
1505 | ||
bea3348e SH |
1506 | /** |
1507 | * netif_device_present - is device available or removed | |
1508 | * @dev: network device | |
1509 | * | |
1510 | * Check if device has not been removed from system. | |
1511 | */ | |
1da177e4 LT |
1512 | static inline int netif_device_present(struct net_device *dev) |
1513 | { | |
1514 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
1515 | } | |
1516 | ||
56079431 | 1517 | extern void netif_device_detach(struct net_device *dev); |
1da177e4 | 1518 | |
56079431 | 1519 | extern void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
1520 | |
1521 | /* | |
1522 | * Network interface message level settings | |
1523 | */ | |
1524 | #define HAVE_NETIF_MSG 1 | |
1525 | ||
1526 | enum { | |
1527 | NETIF_MSG_DRV = 0x0001, | |
1528 | NETIF_MSG_PROBE = 0x0002, | |
1529 | NETIF_MSG_LINK = 0x0004, | |
1530 | NETIF_MSG_TIMER = 0x0008, | |
1531 | NETIF_MSG_IFDOWN = 0x0010, | |
1532 | NETIF_MSG_IFUP = 0x0020, | |
1533 | NETIF_MSG_RX_ERR = 0x0040, | |
1534 | NETIF_MSG_TX_ERR = 0x0080, | |
1535 | NETIF_MSG_TX_QUEUED = 0x0100, | |
1536 | NETIF_MSG_INTR = 0x0200, | |
1537 | NETIF_MSG_TX_DONE = 0x0400, | |
1538 | NETIF_MSG_RX_STATUS = 0x0800, | |
1539 | NETIF_MSG_PKTDATA = 0x1000, | |
1540 | NETIF_MSG_HW = 0x2000, | |
1541 | NETIF_MSG_WOL = 0x4000, | |
1542 | }; | |
1543 | ||
1544 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
1545 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
1546 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
1547 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
1548 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
1549 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
1550 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
1551 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
1552 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
1553 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
1554 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
1555 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
1556 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
1557 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
1558 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
1559 | ||
1560 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
1561 | { | |
1562 | /* use default */ | |
1563 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
1564 | return default_msg_enable_bits; | |
1565 | if (debug_value == 0) /* no output */ | |
1566 | return 0; | |
1567 | /* set low N bits */ | |
1568 | return (1 << debug_value) - 1; | |
1569 | } | |
1570 | ||
0a122576 | 1571 | /* Test if receive needs to be scheduled but only if up */ |
bea3348e SH |
1572 | static inline int netif_rx_schedule_prep(struct net_device *dev, |
1573 | struct napi_struct *napi) | |
1da177e4 | 1574 | { |
a0a46196 | 1575 | return napi_schedule_prep(napi); |
1da177e4 LT |
1576 | } |
1577 | ||
1578 | /* Add interface to tail of rx poll list. This assumes that _prep has | |
1579 | * already been called and returned 1. | |
1580 | */ | |
bea3348e SH |
1581 | static inline void __netif_rx_schedule(struct net_device *dev, |
1582 | struct napi_struct *napi) | |
1583 | { | |
bea3348e SH |
1584 | __napi_schedule(napi); |
1585 | } | |
1da177e4 LT |
1586 | |
1587 | /* Try to reschedule poll. Called by irq handler. */ | |
1588 | ||
bea3348e SH |
1589 | static inline void netif_rx_schedule(struct net_device *dev, |
1590 | struct napi_struct *napi) | |
1da177e4 | 1591 | { |
bea3348e SH |
1592 | if (netif_rx_schedule_prep(dev, napi)) |
1593 | __netif_rx_schedule(dev, napi); | |
1da177e4 LT |
1594 | } |
1595 | ||
bea3348e SH |
1596 | /* Try to reschedule poll. Called by dev->poll() after netif_rx_complete(). */ |
1597 | static inline int netif_rx_reschedule(struct net_device *dev, | |
1598 | struct napi_struct *napi) | |
1da177e4 | 1599 | { |
bea3348e SH |
1600 | if (napi_schedule_prep(napi)) { |
1601 | __netif_rx_schedule(dev, napi); | |
1da177e4 LT |
1602 | return 1; |
1603 | } | |
1604 | return 0; | |
1605 | } | |
1606 | ||
b0ba6667 HX |
1607 | /* same as netif_rx_complete, except that local_irq_save(flags) |
1608 | * has already been issued | |
1609 | */ | |
bea3348e SH |
1610 | static inline void __netif_rx_complete(struct net_device *dev, |
1611 | struct napi_struct *napi) | |
b0ba6667 | 1612 | { |
bea3348e | 1613 | __napi_complete(napi); |
b0ba6667 HX |
1614 | } |
1615 | ||
1da177e4 LT |
1616 | /* Remove interface from poll list: it must be in the poll list |
1617 | * on current cpu. This primitive is called by dev->poll(), when | |
1618 | * it completes the work. The device cannot be out of poll list at this | |
1619 | * moment, it is BUG(). | |
1620 | */ | |
bea3348e SH |
1621 | static inline void netif_rx_complete(struct net_device *dev, |
1622 | struct napi_struct *napi) | |
1da177e4 LT |
1623 | { |
1624 | unsigned long flags; | |
1625 | ||
1626 | local_irq_save(flags); | |
bea3348e | 1627 | __netif_rx_complete(dev, napi); |
1da177e4 LT |
1628 | local_irq_restore(flags); |
1629 | } | |
1630 | ||
c773e847 | 1631 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 1632 | { |
c773e847 DM |
1633 | spin_lock(&txq->_xmit_lock); |
1634 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
1635 | } |
1636 | ||
fd2ea0a7 DM |
1637 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
1638 | { | |
1639 | spin_lock_bh(&txq->_xmit_lock); | |
1640 | txq->xmit_lock_owner = smp_processor_id(); | |
1641 | } | |
1642 | ||
c3f26a26 DM |
1643 | static inline int __netif_tx_trylock(struct netdev_queue *txq) |
1644 | { | |
1645 | int ok = spin_trylock(&txq->_xmit_lock); | |
1646 | if (likely(ok)) | |
1647 | txq->xmit_lock_owner = smp_processor_id(); | |
1648 | return ok; | |
1649 | } | |
1650 | ||
1651 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
1652 | { | |
1653 | txq->xmit_lock_owner = -1; | |
1654 | spin_unlock(&txq->_xmit_lock); | |
1655 | } | |
1656 | ||
1657 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
1658 | { | |
1659 | txq->xmit_lock_owner = -1; | |
1660 | spin_unlock_bh(&txq->_xmit_lock); | |
1661 | } | |
1662 | ||
d29f749e DJ |
1663 | /** |
1664 | * netif_tx_lock - grab network device transmit lock | |
1665 | * @dev: network device | |
d29f749e DJ |
1666 | * |
1667 | * Get network device transmit lock | |
1668 | */ | |
22dd7495 JHS |
1669 | static inline void netif_tx_lock(struct net_device *dev) |
1670 | { | |
e8a0464c | 1671 | unsigned int i; |
c3f26a26 | 1672 | int cpu; |
c773e847 | 1673 | |
c3f26a26 DM |
1674 | spin_lock(&dev->tx_global_lock); |
1675 | cpu = smp_processor_id(); | |
e8a0464c DM |
1676 | for (i = 0; i < dev->num_tx_queues; i++) { |
1677 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
1678 | |
1679 | /* We are the only thread of execution doing a | |
1680 | * freeze, but we have to grab the _xmit_lock in | |
1681 | * order to synchronize with threads which are in | |
1682 | * the ->hard_start_xmit() handler and already | |
1683 | * checked the frozen bit. | |
1684 | */ | |
e8a0464c | 1685 | __netif_tx_lock(txq, cpu); |
c3f26a26 DM |
1686 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
1687 | __netif_tx_unlock(txq); | |
e8a0464c | 1688 | } |
932ff279 HX |
1689 | } |
1690 | ||
1691 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
1692 | { | |
e8a0464c DM |
1693 | local_bh_disable(); |
1694 | netif_tx_lock(dev); | |
932ff279 HX |
1695 | } |
1696 | ||
932ff279 HX |
1697 | static inline void netif_tx_unlock(struct net_device *dev) |
1698 | { | |
e8a0464c DM |
1699 | unsigned int i; |
1700 | ||
1701 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1702 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c773e847 | 1703 | |
c3f26a26 DM |
1704 | /* No need to grab the _xmit_lock here. If the |
1705 | * queue is not stopped for another reason, we | |
1706 | * force a schedule. | |
1707 | */ | |
1708 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
1709 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) | |
1710 | __netif_schedule(txq->qdisc); | |
1711 | } | |
1712 | spin_unlock(&dev->tx_global_lock); | |
932ff279 HX |
1713 | } |
1714 | ||
1715 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
1716 | { | |
e8a0464c DM |
1717 | netif_tx_unlock(dev); |
1718 | local_bh_enable(); | |
932ff279 HX |
1719 | } |
1720 | ||
c773e847 | 1721 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 1722 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 1723 | __netif_tx_lock(txq, cpu); \ |
22dd7495 JHS |
1724 | } \ |
1725 | } | |
1726 | ||
c773e847 | 1727 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 1728 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 1729 | __netif_tx_unlock(txq); \ |
22dd7495 JHS |
1730 | } \ |
1731 | } | |
1732 | ||
1da177e4 LT |
1733 | static inline void netif_tx_disable(struct net_device *dev) |
1734 | { | |
fd2ea0a7 | 1735 | unsigned int i; |
c3f26a26 | 1736 | int cpu; |
fd2ea0a7 | 1737 | |
c3f26a26 DM |
1738 | local_bh_disable(); |
1739 | cpu = smp_processor_id(); | |
fd2ea0a7 DM |
1740 | for (i = 0; i < dev->num_tx_queues; i++) { |
1741 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
1742 | |
1743 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 1744 | netif_tx_stop_queue(txq); |
c3f26a26 | 1745 | __netif_tx_unlock(txq); |
fd2ea0a7 | 1746 | } |
c3f26a26 | 1747 | local_bh_enable(); |
1da177e4 LT |
1748 | } |
1749 | ||
e308a5d8 DM |
1750 | static inline void netif_addr_lock(struct net_device *dev) |
1751 | { | |
1752 | spin_lock(&dev->addr_list_lock); | |
1753 | } | |
1754 | ||
1755 | static inline void netif_addr_lock_bh(struct net_device *dev) | |
1756 | { | |
1757 | spin_lock_bh(&dev->addr_list_lock); | |
1758 | } | |
1759 | ||
1760 | static inline void netif_addr_unlock(struct net_device *dev) | |
1761 | { | |
1762 | spin_unlock(&dev->addr_list_lock); | |
1763 | } | |
1764 | ||
1765 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
1766 | { | |
1767 | spin_unlock_bh(&dev->addr_list_lock); | |
1768 | } | |
1769 | ||
1da177e4 LT |
1770 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
1771 | ||
1772 | extern void ether_setup(struct net_device *dev); | |
1773 | ||
1774 | /* Support for loadable net-drivers */ | |
f25f4e44 PWJ |
1775 | extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, |
1776 | void (*setup)(struct net_device *), | |
1777 | unsigned int queue_count); | |
1778 | #define alloc_netdev(sizeof_priv, name, setup) \ | |
1779 | alloc_netdev_mq(sizeof_priv, name, setup, 1) | |
1da177e4 LT |
1780 | extern int register_netdev(struct net_device *dev); |
1781 | extern void unregister_netdev(struct net_device *dev); | |
4417da66 PM |
1782 | /* Functions used for secondary unicast and multicast support */ |
1783 | extern void dev_set_rx_mode(struct net_device *dev); | |
1784 | extern void __dev_set_rx_mode(struct net_device *dev); | |
1785 | extern int dev_unicast_delete(struct net_device *dev, void *addr, int alen); | |
1786 | extern int dev_unicast_add(struct net_device *dev, void *addr, int alen); | |
e83a2ea8 CL |
1787 | extern int dev_unicast_sync(struct net_device *to, struct net_device *from); |
1788 | extern void dev_unicast_unsync(struct net_device *to, struct net_device *from); | |
1da177e4 LT |
1789 | extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all); |
1790 | extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly); | |
a0a400d7 PM |
1791 | extern int dev_mc_sync(struct net_device *to, struct net_device *from); |
1792 | extern void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
61cbc2fc PM |
1793 | extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all); |
1794 | extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly); | |
e83a2ea8 CL |
1795 | extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); |
1796 | extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); | |
dad9b335 WC |
1797 | extern int dev_set_promiscuity(struct net_device *dev, int inc); |
1798 | extern int dev_set_allmulti(struct net_device *dev, int inc); | |
1da177e4 | 1799 | extern void netdev_state_change(struct net_device *dev); |
c1da4ac7 | 1800 | extern void netdev_bonding_change(struct net_device *dev); |
d8a33ac4 | 1801 | extern void netdev_features_change(struct net_device *dev); |
1da177e4 | 1802 | /* Load a device via the kmod */ |
881d966b | 1803 | extern void dev_load(struct net *net, const char *name); |
1da177e4 | 1804 | extern void dev_mcast_init(void); |
eeda3fd6 SH |
1805 | extern const struct net_device_stats *dev_get_stats(struct net_device *dev); |
1806 | ||
1da177e4 LT |
1807 | extern int netdev_max_backlog; |
1808 | extern int weight_p; | |
1809 | extern int netdev_set_master(struct net_device *dev, struct net_device *master); | |
84fa7933 | 1810 | extern int skb_checksum_help(struct sk_buff *skb); |
576a30eb | 1811 | extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); |
fb286bb2 HX |
1812 | #ifdef CONFIG_BUG |
1813 | extern void netdev_rx_csum_fault(struct net_device *dev); | |
1814 | #else | |
1815 | static inline void netdev_rx_csum_fault(struct net_device *dev) | |
1816 | { | |
1817 | } | |
1818 | #endif | |
1da177e4 LT |
1819 | /* rx skb timestamps */ |
1820 | extern void net_enable_timestamp(void); | |
1821 | extern void net_disable_timestamp(void); | |
1822 | ||
20380731 ACM |
1823 | #ifdef CONFIG_PROC_FS |
1824 | extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); | |
1825 | extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); | |
1826 | extern void dev_seq_stop(struct seq_file *seq, void *v); | |
1827 | #endif | |
1828 | ||
b8a9787e JV |
1829 | extern int netdev_class_create_file(struct class_attribute *class_attr); |
1830 | extern void netdev_class_remove_file(struct class_attribute *class_attr); | |
1831 | ||
cf04a4c7 | 1832 | extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len); |
6579e57b | 1833 | |
20380731 ACM |
1834 | extern void linkwatch_run_queue(void); |
1835 | ||
b63365a2 HX |
1836 | unsigned long netdev_increment_features(unsigned long all, unsigned long one, |
1837 | unsigned long mask); | |
1838 | unsigned long netdev_fix_features(unsigned long features, const char *name); | |
7f353bf2 | 1839 | |
bcd76111 | 1840 | static inline int net_gso_ok(int features, int gso_type) |
576a30eb | 1841 | { |
bcd76111 | 1842 | int feature = gso_type << NETIF_F_GSO_SHIFT; |
d6b4991a | 1843 | return (features & feature) == feature; |
576a30eb HX |
1844 | } |
1845 | ||
bcd76111 HX |
1846 | static inline int skb_gso_ok(struct sk_buff *skb, int features) |
1847 | { | |
a430a43d | 1848 | return net_gso_ok(features, skb_shinfo(skb)->gso_type); |
bcd76111 HX |
1849 | } |
1850 | ||
7967168c HX |
1851 | static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) |
1852 | { | |
a430a43d HX |
1853 | return skb_is_gso(skb) && |
1854 | (!skb_gso_ok(skb, dev->features) || | |
84fa7933 | 1855 | unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); |
7967168c HX |
1856 | } |
1857 | ||
82cc1a7a PWJ |
1858 | static inline void netif_set_gso_max_size(struct net_device *dev, |
1859 | unsigned int size) | |
1860 | { | |
1861 | dev->gso_max_size = size; | |
1862 | } | |
1863 | ||
7ea49ed7 | 1864 | /* On bonding slaves other than the currently active slave, suppress |
f5b2b966 JV |
1865 | * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and |
1866 | * ARP on active-backup slaves with arp_validate enabled. | |
7ea49ed7 DM |
1867 | */ |
1868 | static inline int skb_bond_should_drop(struct sk_buff *skb) | |
1869 | { | |
1870 | struct net_device *dev = skb->dev; | |
1871 | struct net_device *master = dev->master; | |
1872 | ||
6cf3f41e JV |
1873 | if (master) { |
1874 | if (master->priv_flags & IFF_MASTER_ARPMON) | |
1875 | dev->last_rx = jiffies; | |
1876 | ||
1877 | if (dev->priv_flags & IFF_SLAVE_INACTIVE) { | |
1878 | if ((dev->priv_flags & IFF_SLAVE_NEEDARP) && | |
1879 | skb->protocol == __constant_htons(ETH_P_ARP)) | |
7ea49ed7 | 1880 | return 0; |
7ea49ed7 | 1881 | |
6cf3f41e JV |
1882 | if (master->priv_flags & IFF_MASTER_ALB) { |
1883 | if (skb->pkt_type != PACKET_BROADCAST && | |
1884 | skb->pkt_type != PACKET_MULTICAST) | |
1885 | return 0; | |
1886 | } | |
1887 | if (master->priv_flags & IFF_MASTER_8023AD && | |
1888 | skb->protocol == __constant_htons(ETH_P_SLOW)) | |
1889 | return 0; | |
1890 | ||
1891 | return 1; | |
1892 | } | |
7ea49ed7 DM |
1893 | } |
1894 | return 0; | |
1895 | } | |
1896 | ||
505d4f73 | 1897 | extern struct pernet_operations __net_initdata loopback_net_ops; |
1da177e4 LT |
1898 | #endif /* __KERNEL__ */ |
1899 | ||
1900 | #endif /* _LINUX_DEV_H */ |