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1da177e4 LT |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * Definitions for the Interfaces handler. | |
7 | * | |
8 | * Version: @(#)dev.h 1.0.10 08/12/93 | |
9 | * | |
02c30a84 | 10 | * Authors: Ross Biro |
1da177e4 LT |
11 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
12 | * Corey Minyard <wf-rch!minyard@relay.EU.net> | |
13 | * Donald J. Becker, <becker@cesdis.gsfc.nasa.gov> | |
113aa838 | 14 | * Alan Cox, <alan@lxorguk.ukuu.org.uk> |
1da177e4 LT |
15 | * Bjorn Ekwall. <bj0rn@blox.se> |
16 | * Pekka Riikonen <priikone@poseidon.pspt.fi> | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or | |
19 | * modify it under the terms of the GNU General Public License | |
20 | * as published by the Free Software Foundation; either version | |
21 | * 2 of the License, or (at your option) any later version. | |
22 | * | |
23 | * Moved to /usr/include/linux for NET3 | |
24 | */ | |
25 | #ifndef _LINUX_NETDEVICE_H | |
26 | #define _LINUX_NETDEVICE_H | |
27 | ||
28 | #include <linux/if.h> | |
29 | #include <linux/if_ether.h> | |
30 | #include <linux/if_packet.h> | |
31 | ||
32 | #ifdef __KERNEL__ | |
d7fe0f24 | 33 | #include <linux/timer.h> |
bea3348e | 34 | #include <linux/delay.h> |
cc0be322 | 35 | #include <linux/mm.h> |
1da177e4 LT |
36 | #include <asm/atomic.h> |
37 | #include <asm/cache.h> | |
38 | #include <asm/byteorder.h> | |
39 | ||
1da177e4 LT |
40 | #include <linux/device.h> |
41 | #include <linux/percpu.h> | |
db217334 | 42 | #include <linux/dmaengine.h> |
bea3348e | 43 | #include <linux/workqueue.h> |
1da177e4 | 44 | |
b1b67dd4 | 45 | #include <linux/ethtool.h> |
a050c33f | 46 | #include <net/net_namespace.h> |
cf85d08f | 47 | #include <net/dsa.h> |
7a6b6f51 | 48 | #ifdef CONFIG_DCB |
2f90b865 AD |
49 | #include <net/dcbnl.h> |
50 | #endif | |
a050c33f | 51 | |
1da177e4 | 52 | struct vlan_group; |
115c1d6e | 53 | struct netpoll_info; |
704232c2 JB |
54 | /* 802.11 specific */ |
55 | struct wireless_dev; | |
1da177e4 LT |
56 | /* source back-compat hooks */ |
57 | #define SET_ETHTOOL_OPS(netdev,ops) \ | |
58 | ( (netdev)->ethtool_ops = (ops) ) | |
59 | ||
60 | #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev | |
61 | functions are available. */ | |
62 | #define HAVE_FREE_NETDEV /* free_netdev() */ | |
63 | #define HAVE_NETDEV_PRIV /* netdev_priv() */ | |
64 | ||
65 | #define NET_XMIT_SUCCESS 0 | |
66 | #define NET_XMIT_DROP 1 /* skb dropped */ | |
67 | #define NET_XMIT_CN 2 /* congestion notification */ | |
68 | #define NET_XMIT_POLICED 3 /* skb is shot by police */ | |
378a2f09 | 69 | #define NET_XMIT_MASK 0xFFFF /* qdisc flags in net/sch_generic.h */ |
1da177e4 LT |
70 | |
71 | /* Backlog congestion levels */ | |
72 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
73 | #define NET_RX_DROP 1 /* packet dropped */ | |
74 | #define NET_RX_CN_LOW 2 /* storm alert, just in case */ | |
75 | #define NET_RX_CN_MOD 3 /* Storm on its way! */ | |
76 | #define NET_RX_CN_HIGH 4 /* The storm is here */ | |
77 | #define NET_RX_BAD 5 /* packet dropped due to kernel error */ | |
78 | ||
b9df3cb8 GR |
79 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
80 | * indicates that the device will soon be dropping packets, or already drops | |
81 | * some packets of the same priority; prompting us to send less aggressively. */ | |
82 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e)) | |
1da177e4 LT |
83 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
84 | ||
85 | #endif | |
86 | ||
87 | #define MAX_ADDR_LEN 32 /* Largest hardware address length */ | |
88 | ||
89 | /* Driver transmit return codes */ | |
90 | #define NETDEV_TX_OK 0 /* driver took care of packet */ | |
91 | #define NETDEV_TX_BUSY 1 /* driver tx path was busy*/ | |
92 | #define NETDEV_TX_LOCKED -1 /* driver tx lock was already taken */ | |
93 | ||
c88e6f51 AB |
94 | #ifdef __KERNEL__ |
95 | ||
1da177e4 LT |
96 | /* |
97 | * Compute the worst case header length according to the protocols | |
98 | * used. | |
99 | */ | |
fe2918b0 | 100 | |
8388e3da DM |
101 | #if defined(CONFIG_WLAN_80211) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) |
102 | # if defined(CONFIG_MAC80211_MESH) | |
103 | # define LL_MAX_HEADER 128 | |
104 | # else | |
105 | # define LL_MAX_HEADER 96 | |
106 | # endif | |
c759a6b4 | 107 | #elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE) |
8388e3da | 108 | # define LL_MAX_HEADER 48 |
1da177e4 | 109 | #else |
8388e3da | 110 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
111 | #endif |
112 | ||
e81c7359 DM |
113 | #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \ |
114 | !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ | |
115 | !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ | |
116 | !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) | |
1da177e4 LT |
117 | #define MAX_HEADER LL_MAX_HEADER |
118 | #else | |
119 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
120 | #endif | |
121 | ||
c88e6f51 AB |
122 | #endif /* __KERNEL__ */ |
123 | ||
1da177e4 LT |
124 | /* |
125 | * Network device statistics. Akin to the 2.0 ether stats but | |
126 | * with byte counters. | |
127 | */ | |
fe2918b0 | 128 | |
1da177e4 LT |
129 | struct net_device_stats |
130 | { | |
131 | unsigned long rx_packets; /* total packets received */ | |
132 | unsigned long tx_packets; /* total packets transmitted */ | |
133 | unsigned long rx_bytes; /* total bytes received */ | |
134 | unsigned long tx_bytes; /* total bytes transmitted */ | |
135 | unsigned long rx_errors; /* bad packets received */ | |
136 | unsigned long tx_errors; /* packet transmit problems */ | |
137 | unsigned long rx_dropped; /* no space in linux buffers */ | |
138 | unsigned long tx_dropped; /* no space available in linux */ | |
139 | unsigned long multicast; /* multicast packets received */ | |
140 | unsigned long collisions; | |
141 | ||
142 | /* detailed rx_errors: */ | |
143 | unsigned long rx_length_errors; | |
144 | unsigned long rx_over_errors; /* receiver ring buff overflow */ | |
145 | unsigned long rx_crc_errors; /* recved pkt with crc error */ | |
146 | unsigned long rx_frame_errors; /* recv'd frame alignment error */ | |
147 | unsigned long rx_fifo_errors; /* recv'r fifo overrun */ | |
148 | unsigned long rx_missed_errors; /* receiver missed packet */ | |
149 | ||
150 | /* detailed tx_errors */ | |
151 | unsigned long tx_aborted_errors; | |
152 | unsigned long tx_carrier_errors; | |
153 | unsigned long tx_fifo_errors; | |
154 | unsigned long tx_heartbeat_errors; | |
155 | unsigned long tx_window_errors; | |
156 | ||
157 | /* for cslip etc */ | |
158 | unsigned long rx_compressed; | |
159 | unsigned long tx_compressed; | |
160 | }; | |
161 | ||
162 | ||
163 | /* Media selection options. */ | |
164 | enum { | |
165 | IF_PORT_UNKNOWN = 0, | |
166 | IF_PORT_10BASE2, | |
167 | IF_PORT_10BASET, | |
168 | IF_PORT_AUI, | |
169 | IF_PORT_100BASET, | |
170 | IF_PORT_100BASETX, | |
171 | IF_PORT_100BASEFX | |
172 | }; | |
173 | ||
174 | #ifdef __KERNEL__ | |
175 | ||
176 | #include <linux/cache.h> | |
177 | #include <linux/skbuff.h> | |
178 | ||
179 | struct neighbour; | |
180 | struct neigh_parms; | |
181 | struct sk_buff; | |
182 | ||
183 | struct netif_rx_stats | |
184 | { | |
185 | unsigned total; | |
186 | unsigned dropped; | |
187 | unsigned time_squeeze; | |
1da177e4 LT |
188 | unsigned cpu_collision; |
189 | }; | |
190 | ||
191 | DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat); | |
192 | ||
bf742482 PM |
193 | struct dev_addr_list |
194 | { | |
195 | struct dev_addr_list *next; | |
196 | u8 da_addr[MAX_ADDR_LEN]; | |
197 | u8 da_addrlen; | |
a0a400d7 | 198 | u8 da_synced; |
bf742482 PM |
199 | int da_users; |
200 | int da_gusers; | |
201 | }; | |
1da177e4 LT |
202 | |
203 | /* | |
204 | * We tag multicasts with these structures. | |
205 | */ | |
3fba5a8b PM |
206 | |
207 | #define dev_mc_list dev_addr_list | |
208 | #define dmi_addr da_addr | |
209 | #define dmi_addrlen da_addrlen | |
210 | #define dmi_users da_users | |
211 | #define dmi_gusers da_gusers | |
1da177e4 | 212 | |
f001fde5 JP |
213 | struct netdev_hw_addr { |
214 | struct list_head list; | |
215 | unsigned char addr[MAX_ADDR_LEN]; | |
216 | unsigned char type; | |
217 | #define NETDEV_HW_ADDR_T_LAN 1 | |
218 | #define NETDEV_HW_ADDR_T_SAN 2 | |
219 | #define NETDEV_HW_ADDR_T_SLAVE 3 | |
220 | struct rcu_head rcu_head; | |
221 | }; | |
222 | ||
1da177e4 LT |
223 | struct hh_cache |
224 | { | |
225 | struct hh_cache *hh_next; /* Next entry */ | |
226 | atomic_t hh_refcnt; /* number of users */ | |
f0490980 ED |
227 | /* |
228 | * We want hh_output, hh_len, hh_lock and hh_data be a in a separate | |
229 | * cache line on SMP. | |
230 | * They are mostly read, but hh_refcnt may be changed quite frequently, | |
231 | * incurring cache line ping pongs. | |
232 | */ | |
233 | __be16 hh_type ____cacheline_aligned_in_smp; | |
234 | /* protocol identifier, f.e ETH_P_IP | |
1da177e4 LT |
235 | * NOTE: For VLANs, this will be the |
236 | * encapuslated type. --BLG | |
237 | */ | |
d5c42c0e | 238 | u16 hh_len; /* length of header */ |
1da177e4 | 239 | int (*hh_output)(struct sk_buff *skb); |
3644f0ce | 240 | seqlock_t hh_lock; |
1da177e4 LT |
241 | |
242 | /* cached hardware header; allow for machine alignment needs. */ | |
243 | #define HH_DATA_MOD 16 | |
244 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 245 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
246 | #define HH_DATA_ALIGN(__len) \ |
247 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
248 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
249 | }; | |
250 | ||
251 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. | |
252 | * Alternative is: | |
253 | * dev->hard_header_len ? (dev->hard_header_len + | |
254 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
255 | * | |
256 | * We could use other alignment values, but we must maintain the | |
257 | * relationship HH alignment <= LL alignment. | |
f5184d26 JB |
258 | * |
259 | * LL_ALLOCATED_SPACE also takes into account the tailroom the device | |
260 | * may need. | |
1da177e4 LT |
261 | */ |
262 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 263 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 264 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 JB |
265 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
266 | #define LL_ALLOCATED_SPACE(dev) \ | |
267 | ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
1da177e4 | 268 | |
3b04ddde SH |
269 | struct header_ops { |
270 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
271 | unsigned short type, const void *daddr, | |
272 | const void *saddr, unsigned len); | |
273 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); | |
274 | int (*rebuild)(struct sk_buff *skb); | |
275 | #define HAVE_HEADER_CACHE | |
276 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh); | |
277 | void (*cache_update)(struct hh_cache *hh, | |
278 | const struct net_device *dev, | |
279 | const unsigned char *haddr); | |
280 | }; | |
281 | ||
1da177e4 LT |
282 | /* These flag bits are private to the generic network queueing |
283 | * layer, they may not be explicitly referenced by any other | |
284 | * code. | |
285 | */ | |
286 | ||
287 | enum netdev_state_t | |
288 | { | |
1da177e4 LT |
289 | __LINK_STATE_START, |
290 | __LINK_STATE_PRESENT, | |
1da177e4 | 291 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
292 | __LINK_STATE_LINKWATCH_PENDING, |
293 | __LINK_STATE_DORMANT, | |
1da177e4 LT |
294 | }; |
295 | ||
296 | ||
297 | /* | |
298 | * This structure holds at boot time configured netdevice settings. They | |
fe2918b0 | 299 | * are then used in the device probing. |
1da177e4 LT |
300 | */ |
301 | struct netdev_boot_setup { | |
302 | char name[IFNAMSIZ]; | |
303 | struct ifmap map; | |
304 | }; | |
305 | #define NETDEV_BOOT_SETUP_MAX 8 | |
306 | ||
20380731 | 307 | extern int __init netdev_boot_setup(char *str); |
1da177e4 | 308 | |
bea3348e SH |
309 | /* |
310 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
311 | */ | |
312 | struct napi_struct { | |
313 | /* The poll_list must only be managed by the entity which | |
314 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
315 | * whoever atomically sets that bit can add this napi_struct | |
316 | * to the per-cpu poll_list, and whoever clears that bit | |
317 | * can remove from the list right before clearing the bit. | |
318 | */ | |
319 | struct list_head poll_list; | |
320 | ||
321 | unsigned long state; | |
322 | int weight; | |
323 | int (*poll)(struct napi_struct *, int); | |
324 | #ifdef CONFIG_NETPOLL | |
325 | spinlock_t poll_lock; | |
326 | int poll_owner; | |
bea3348e | 327 | #endif |
4ae5544f HX |
328 | |
329 | unsigned int gro_count; | |
330 | ||
5d38a079 | 331 | struct net_device *dev; |
d565b0a1 HX |
332 | struct list_head dev_list; |
333 | struct sk_buff *gro_list; | |
5d38a079 | 334 | struct sk_buff *skb; |
bea3348e SH |
335 | }; |
336 | ||
337 | enum | |
338 | { | |
339 | NAPI_STATE_SCHED, /* Poll is scheduled */ | |
a0a46196 | 340 | NAPI_STATE_DISABLE, /* Disable pending */ |
7b363e44 | 341 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
bea3348e SH |
342 | }; |
343 | ||
d1c76af9 HX |
344 | enum { |
345 | GRO_MERGED, | |
346 | GRO_MERGED_FREE, | |
347 | GRO_HELD, | |
348 | GRO_NORMAL, | |
349 | GRO_DROP, | |
350 | }; | |
351 | ||
b3c97528 | 352 | extern void __napi_schedule(struct napi_struct *n); |
bea3348e | 353 | |
a0a46196 DM |
354 | static inline int napi_disable_pending(struct napi_struct *n) |
355 | { | |
356 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
357 | } | |
358 | ||
bea3348e SH |
359 | /** |
360 | * napi_schedule_prep - check if napi can be scheduled | |
361 | * @n: napi context | |
362 | * | |
363 | * Test if NAPI routine is already running, and if not mark | |
364 | * it as running. This is used as a condition variable | |
a0a46196 DM |
365 | * insure only one NAPI poll instance runs. We also make |
366 | * sure there is no pending NAPI disable. | |
bea3348e SH |
367 | */ |
368 | static inline int napi_schedule_prep(struct napi_struct *n) | |
369 | { | |
a0a46196 DM |
370 | return !napi_disable_pending(n) && |
371 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); | |
bea3348e SH |
372 | } |
373 | ||
374 | /** | |
375 | * napi_schedule - schedule NAPI poll | |
376 | * @n: napi context | |
377 | * | |
378 | * Schedule NAPI poll routine to be called if it is not already | |
379 | * running. | |
380 | */ | |
381 | static inline void napi_schedule(struct napi_struct *n) | |
382 | { | |
383 | if (napi_schedule_prep(n)) | |
384 | __napi_schedule(n); | |
385 | } | |
386 | ||
bfe13f54 RD |
387 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
388 | static inline int napi_reschedule(struct napi_struct *napi) | |
389 | { | |
390 | if (napi_schedule_prep(napi)) { | |
391 | __napi_schedule(napi); | |
392 | return 1; | |
393 | } | |
394 | return 0; | |
395 | } | |
396 | ||
bea3348e SH |
397 | /** |
398 | * napi_complete - NAPI processing complete | |
399 | * @n: napi context | |
400 | * | |
401 | * Mark NAPI processing as complete. | |
402 | */ | |
d565b0a1 HX |
403 | extern void __napi_complete(struct napi_struct *n); |
404 | extern void napi_complete(struct napi_struct *n); | |
bea3348e SH |
405 | |
406 | /** | |
407 | * napi_disable - prevent NAPI from scheduling | |
408 | * @n: napi context | |
409 | * | |
410 | * Stop NAPI from being scheduled on this context. | |
411 | * Waits till any outstanding processing completes. | |
412 | */ | |
413 | static inline void napi_disable(struct napi_struct *n) | |
414 | { | |
a0a46196 | 415 | set_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e | 416 | while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) |
43cc7380 | 417 | msleep(1); |
a0a46196 | 418 | clear_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e SH |
419 | } |
420 | ||
421 | /** | |
422 | * napi_enable - enable NAPI scheduling | |
423 | * @n: napi context | |
424 | * | |
425 | * Resume NAPI from being scheduled on this context. | |
426 | * Must be paired with napi_disable. | |
427 | */ | |
428 | static inline void napi_enable(struct napi_struct *n) | |
429 | { | |
430 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
431 | smp_mb__before_clear_bit(); | |
432 | clear_bit(NAPI_STATE_SCHED, &n->state); | |
433 | } | |
434 | ||
c264c3de SH |
435 | #ifdef CONFIG_SMP |
436 | /** | |
437 | * napi_synchronize - wait until NAPI is not running | |
438 | * @n: napi context | |
439 | * | |
440 | * Wait until NAPI is done being scheduled on this context. | |
441 | * Waits till any outstanding processing completes but | |
442 | * does not disable future activations. | |
443 | */ | |
444 | static inline void napi_synchronize(const struct napi_struct *n) | |
445 | { | |
446 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
447 | msleep(1); | |
448 | } | |
449 | #else | |
450 | # define napi_synchronize(n) barrier() | |
451 | #endif | |
452 | ||
79d16385 DM |
453 | enum netdev_queue_state_t |
454 | { | |
455 | __QUEUE_STATE_XOFF, | |
c3f26a26 | 456 | __QUEUE_STATE_FROZEN, |
79d16385 DM |
457 | }; |
458 | ||
bb949fbd | 459 | struct netdev_queue { |
6a321cb3 ED |
460 | /* |
461 | * read mostly part | |
462 | */ | |
bb949fbd | 463 | struct net_device *dev; |
b0e1e646 | 464 | struct Qdisc *qdisc; |
79d16385 | 465 | unsigned long state; |
b0e1e646 | 466 | struct Qdisc *qdisc_sleeping; |
6a321cb3 ED |
467 | /* |
468 | * write mostly part | |
469 | */ | |
470 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
471 | int xmit_lock_owner; | |
e8a0464c | 472 | } ____cacheline_aligned_in_smp; |
bb949fbd | 473 | |
d314774c SH |
474 | |
475 | /* | |
476 | * This structure defines the management hooks for network devices. | |
00829823 SH |
477 | * The following hooks can be defined; unless noted otherwise, they are |
478 | * optional and can be filled with a null pointer. | |
d314774c SH |
479 | * |
480 | * int (*ndo_init)(struct net_device *dev); | |
481 | * This function is called once when network device is registered. | |
482 | * The network device can use this to any late stage initializaton | |
483 | * or semantic validattion. It can fail with an error code which will | |
484 | * be propogated back to register_netdev | |
485 | * | |
486 | * void (*ndo_uninit)(struct net_device *dev); | |
487 | * This function is called when device is unregistered or when registration | |
488 | * fails. It is not called if init fails. | |
489 | * | |
490 | * int (*ndo_open)(struct net_device *dev); | |
491 | * This function is called when network device transistions to the up | |
492 | * state. | |
493 | * | |
494 | * int (*ndo_stop)(struct net_device *dev); | |
495 | * This function is called when network device transistions to the down | |
496 | * state. | |
497 | * | |
985ebdb5 | 498 | * int (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev); |
00829823 SH |
499 | * Called when a packet needs to be transmitted. |
500 | * Must return NETDEV_TX_OK , NETDEV_TX_BUSY, or NETDEV_TX_LOCKED, | |
501 | * Required can not be NULL. | |
502 | * | |
503 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb); | |
504 | * Called to decide which queue to when device supports multiple | |
505 | * transmit queues. | |
506 | * | |
d314774c SH |
507 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
508 | * This function is called to allow device receiver to make | |
509 | * changes to configuration when multicast or promiscious is enabled. | |
510 | * | |
511 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
512 | * This function is called device changes address list filtering. | |
513 | * | |
514 | * void (*ndo_set_multicast_list)(struct net_device *dev); | |
515 | * This function is called when the multicast address list changes. | |
516 | * | |
517 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
518 | * This function is called when the Media Access Control address | |
37b607c5 | 519 | * needs to be changed. If this interface is not defined, the |
d314774c SH |
520 | * mac address can not be changed. |
521 | * | |
522 | * int (*ndo_validate_addr)(struct net_device *dev); | |
523 | * Test if Media Access Control address is valid for the device. | |
524 | * | |
525 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
526 | * Called when a user request an ioctl which can't be handled by | |
527 | * the generic interface code. If not defined ioctl's return | |
528 | * not supported error code. | |
529 | * | |
530 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); | |
531 | * Used to set network devices bus interface parameters. This interface | |
532 | * is retained for legacy reason, new devices should use the bus | |
533 | * interface (PCI) for low level management. | |
534 | * | |
535 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
536 | * Called when a user wants to change the Maximum Transfer Unit | |
537 | * of a device. If not defined, any request to change MTU will | |
538 | * will return an error. | |
539 | * | |
00829823 | 540 | * void (*ndo_tx_timeout)(struct net_device *dev); |
d314774c SH |
541 | * Callback uses when the transmitter has not made any progress |
542 | * for dev->watchdog ticks. | |
543 | * | |
544 | * struct net_device_stats* (*get_stats)(struct net_device *dev); | |
545 | * Called when a user wants to get the network device usage | |
546 | * statistics. If not defined, the counters in dev->stats will | |
547 | * be used. | |
548 | * | |
549 | * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp); | |
550 | * If device support VLAN receive accleration | |
551 | * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called | |
552 | * when vlan groups for the device changes. Note: grp is NULL | |
553 | * if no vlan's groups are being used. | |
554 | * | |
555 | * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid); | |
556 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
557 | * this function is called when a VLAN id is registered. | |
558 | * | |
559 | * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid); | |
560 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
561 | * this function is called when a VLAN id is unregistered. | |
562 | * | |
563 | * void (*ndo_poll_controller)(struct net_device *dev); | |
564 | */ | |
47fd5b83 | 565 | #define HAVE_NET_DEVICE_OPS |
d314774c SH |
566 | struct net_device_ops { |
567 | int (*ndo_init)(struct net_device *dev); | |
568 | void (*ndo_uninit)(struct net_device *dev); | |
569 | int (*ndo_open)(struct net_device *dev); | |
570 | int (*ndo_stop)(struct net_device *dev); | |
00829823 SH |
571 | int (*ndo_start_xmit) (struct sk_buff *skb, |
572 | struct net_device *dev); | |
573 | u16 (*ndo_select_queue)(struct net_device *dev, | |
574 | struct sk_buff *skb); | |
d314774c SH |
575 | #define HAVE_CHANGE_RX_FLAGS |
576 | void (*ndo_change_rx_flags)(struct net_device *dev, | |
577 | int flags); | |
578 | #define HAVE_SET_RX_MODE | |
579 | void (*ndo_set_rx_mode)(struct net_device *dev); | |
580 | #define HAVE_MULTICAST | |
581 | void (*ndo_set_multicast_list)(struct net_device *dev); | |
582 | #define HAVE_SET_MAC_ADDR | |
583 | int (*ndo_set_mac_address)(struct net_device *dev, | |
584 | void *addr); | |
585 | #define HAVE_VALIDATE_ADDR | |
586 | int (*ndo_validate_addr)(struct net_device *dev); | |
587 | #define HAVE_PRIVATE_IOCTL | |
588 | int (*ndo_do_ioctl)(struct net_device *dev, | |
589 | struct ifreq *ifr, int cmd); | |
590 | #define HAVE_SET_CONFIG | |
591 | int (*ndo_set_config)(struct net_device *dev, | |
592 | struct ifmap *map); | |
593 | #define HAVE_CHANGE_MTU | |
00829823 SH |
594 | int (*ndo_change_mtu)(struct net_device *dev, |
595 | int new_mtu); | |
596 | int (*ndo_neigh_setup)(struct net_device *dev, | |
597 | struct neigh_parms *); | |
d314774c SH |
598 | #define HAVE_TX_TIMEOUT |
599 | void (*ndo_tx_timeout) (struct net_device *dev); | |
600 | ||
601 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); | |
602 | ||
603 | void (*ndo_vlan_rx_register)(struct net_device *dev, | |
604 | struct vlan_group *grp); | |
605 | void (*ndo_vlan_rx_add_vid)(struct net_device *dev, | |
606 | unsigned short vid); | |
607 | void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, | |
608 | unsigned short vid); | |
609 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
610 | #define HAVE_NETDEV_POLL | |
611 | void (*ndo_poll_controller)(struct net_device *dev); | |
612 | #endif | |
4d288d57 YZ |
613 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
614 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, | |
615 | u16 xid, | |
616 | struct scatterlist *sgl, | |
617 | unsigned int sgc); | |
618 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
619 | u16 xid); | |
620 | #endif | |
d314774c SH |
621 | }; |
622 | ||
1da177e4 LT |
623 | /* |
624 | * The DEVICE structure. | |
625 | * Actually, this whole structure is a big mistake. It mixes I/O | |
626 | * data with strictly "high-level" data, and it has to know about | |
627 | * almost every data structure used in the INET module. | |
628 | * | |
629 | * FIXME: cleanup struct net_device such that network protocol info | |
630 | * moves out. | |
631 | */ | |
632 | ||
633 | struct net_device | |
634 | { | |
635 | ||
636 | /* | |
637 | * This is the first field of the "visible" part of this structure | |
638 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
639 | * the interface. | |
640 | */ | |
641 | char name[IFNAMSIZ]; | |
9356b8fc ED |
642 | /* device name hash chain */ |
643 | struct hlist_node name_hlist; | |
0b815a1a SH |
644 | /* snmp alias */ |
645 | char *ifalias; | |
1da177e4 LT |
646 | |
647 | /* | |
648 | * I/O specific fields | |
649 | * FIXME: Merge these and struct ifmap into one | |
650 | */ | |
651 | unsigned long mem_end; /* shared mem end */ | |
652 | unsigned long mem_start; /* shared mem start */ | |
653 | unsigned long base_addr; /* device I/O address */ | |
654 | unsigned int irq; /* device IRQ number */ | |
655 | ||
656 | /* | |
657 | * Some hardware also needs these fields, but they are not | |
658 | * part of the usual set specified in Space.c. | |
659 | */ | |
660 | ||
661 | unsigned char if_port; /* Selectable AUI, TP,..*/ | |
662 | unsigned char dma; /* DMA channel */ | |
663 | ||
664 | unsigned long state; | |
665 | ||
7562f876 | 666 | struct list_head dev_list; |
bea3348e | 667 | struct list_head napi_list; |
1da177e4 | 668 | |
9356b8fc ED |
669 | /* Net device features */ |
670 | unsigned long features; | |
671 | #define NETIF_F_SG 1 /* Scatter/gather IO. */ | |
d212f87b | 672 | #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ |
9356b8fc ED |
673 | #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ |
674 | #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ | |
d212f87b | 675 | #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ |
9356b8fc ED |
676 | #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ |
677 | #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ | |
678 | #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ | |
679 | #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ | |
680 | #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ | |
681 | #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ | |
37c3185a | 682 | #define NETIF_F_GSO 2048 /* Enable software GSO. */ |
e24eb521 CB |
683 | #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ |
684 | /* do not use LLTX in new drivers */ | |
ce286d32 | 685 | #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ |
d565b0a1 | 686 | #define NETIF_F_GRO 16384 /* Generic receive offload */ |
3ae7c0b2 | 687 | #define NETIF_F_LRO 32768 /* large receive offload */ |
7967168c | 688 | |
8dc92f7e | 689 | /* the GSO_MASK reserves bits 16 through 23 */ |
01d5b2fc | 690 | #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */ |
8dc92f7e | 691 | #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */ |
01d5b2fc | 692 | |
7967168c | 693 | /* Segmentation offload features */ |
289c79a4 | 694 | #define NETIF_F_GSO_SHIFT 16 |
43eb99c5 | 695 | #define NETIF_F_GSO_MASK 0x00ff0000 |
7967168c | 696 | #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) |
f83ef8c0 | 697 | #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) |
576a30eb | 698 | #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) |
f83ef8c0 HX |
699 | #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) |
700 | #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) | |
01d5b2fc | 701 | #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT) |
9356b8fc | 702 | |
78eb8877 HX |
703 | /* List of features with software fallbacks. */ |
704 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) | |
705 | ||
d212f87b | 706 | |
8648b305 | 707 | #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) |
d212f87b SH |
708 | #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) |
709 | #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) | |
710 | #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) | |
8648b305 | 711 | |
b63365a2 HX |
712 | /* |
713 | * If one device supports one of these features, then enable them | |
714 | * for all in netdev_increment_features. | |
715 | */ | |
716 | #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ | |
d314774c | 717 | NETIF_F_SG | NETIF_F_HIGHDMA | \ |
b63365a2 HX |
718 | NETIF_F_FRAGLIST) |
719 | ||
1da177e4 LT |
720 | /* Interface index. Unique device identifier */ |
721 | int ifindex; | |
722 | int iflink; | |
723 | ||
c45d286e | 724 | struct net_device_stats stats; |
1da177e4 | 725 | |
b86e0280 | 726 | #ifdef CONFIG_WIRELESS_EXT |
1da177e4 LT |
727 | /* List of functions to handle Wireless Extensions (instead of ioctl). |
728 | * See <net/iw_handler.h> for details. Jean II */ | |
729 | const struct iw_handler_def * wireless_handlers; | |
730 | /* Instance data managed by the core of Wireless Extensions. */ | |
731 | struct iw_public_data * wireless_data; | |
b86e0280 | 732 | #endif |
d314774c SH |
733 | /* Management operations */ |
734 | const struct net_device_ops *netdev_ops; | |
76fd8593 | 735 | const struct ethtool_ops *ethtool_ops; |
1da177e4 | 736 | |
3b04ddde SH |
737 | /* Hardware header description */ |
738 | const struct header_ops *header_ops; | |
739 | ||
b00055aa | 740 | unsigned int flags; /* interface flags (a la BSD) */ |
1da177e4 LT |
741 | unsigned short gflags; |
742 | unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */ | |
743 | unsigned short padded; /* How much padding added by alloc_netdev() */ | |
744 | ||
b00055aa SR |
745 | unsigned char operstate; /* RFC2863 operstate */ |
746 | unsigned char link_mode; /* mapping policy to operstate */ | |
747 | ||
1da177e4 LT |
748 | unsigned mtu; /* interface MTU value */ |
749 | unsigned short type; /* interface hardware type */ | |
750 | unsigned short hard_header_len; /* hardware hdr length */ | |
1da177e4 | 751 | |
f5184d26 JB |
752 | /* extra head- and tailroom the hardware may need, but not in all cases |
753 | * can this be guaranteed, especially tailroom. Some cases also use | |
754 | * LL_MAX_HEADER instead to allocate the skb. | |
755 | */ | |
756 | unsigned short needed_headroom; | |
757 | unsigned short needed_tailroom; | |
758 | ||
1da177e4 LT |
759 | struct net_device *master; /* Pointer to master device of a group, |
760 | * which this device is member of. | |
761 | */ | |
762 | ||
763 | /* Interface address info. */ | |
a6f9a705 | 764 | unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ |
1da177e4 LT |
765 | unsigned char addr_len; /* hardware address length */ |
766 | unsigned short dev_id; /* for shared network cards */ | |
767 | ||
f1f28aa3 | 768 | spinlock_t addr_list_lock; |
4417da66 PM |
769 | struct dev_addr_list *uc_list; /* Secondary unicast mac addresses */ |
770 | int uc_count; /* Number of installed ucasts */ | |
771 | int uc_promisc; | |
3fba5a8b | 772 | struct dev_addr_list *mc_list; /* Multicast mac addresses */ |
1da177e4 | 773 | int mc_count; /* Number of installed mcasts */ |
9d45abe1 WC |
774 | unsigned int promiscuity; |
775 | unsigned int allmulti; | |
1da177e4 | 776 | |
1da177e4 LT |
777 | |
778 | /* Protocol specific pointers */ | |
779 | ||
91da11f8 LB |
780 | #ifdef CONFIG_NET_DSA |
781 | void *dsa_ptr; /* dsa specific data */ | |
782 | #endif | |
1da177e4 | 783 | void *atalk_ptr; /* AppleTalk link */ |
fe2918b0 | 784 | void *ip_ptr; /* IPv4 specific data */ |
1da177e4 LT |
785 | void *dn_ptr; /* DECnet specific data */ |
786 | void *ip6_ptr; /* IPv6 specific data */ | |
787 | void *ec_ptr; /* Econet specific data */ | |
788 | void *ax25_ptr; /* AX.25 specific data */ | |
704232c2 JB |
789 | struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, |
790 | assign before registering */ | |
1da177e4 | 791 | |
9356b8fc ED |
792 | /* |
793 | * Cache line mostly used on receive path (including eth_type_trans()) | |
794 | */ | |
9356b8fc ED |
795 | unsigned long last_rx; /* Time of last Rx */ |
796 | /* Interface address info used in eth_type_trans() */ | |
f001fde5 JP |
797 | unsigned char *dev_addr; /* hw address, (before bcast |
798 | because most packets are | |
799 | unicast) */ | |
800 | ||
801 | struct list_head dev_addr_list; /* list of device hw addresses */ | |
9356b8fc ED |
802 | |
803 | unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ | |
1da177e4 | 804 | |
bb949fbd | 805 | struct netdev_queue rx_queue; |
e8a0464c DM |
806 | |
807 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; | |
fd2ea0a7 DM |
808 | |
809 | /* Number of TX queues allocated at alloc_netdev_mq() time */ | |
e8a0464c | 810 | unsigned int num_tx_queues; |
fd2ea0a7 DM |
811 | |
812 | /* Number of TX queues currently active in device */ | |
813 | unsigned int real_num_tx_queues; | |
814 | ||
1da177e4 | 815 | unsigned long tx_queue_len; /* Max frames per queue allowed */ |
c3f26a26 | 816 | spinlock_t tx_global_lock; |
9356b8fc ED |
817 | /* |
818 | * One part is mostly used on xmit path (device) | |
819 | */ | |
9356b8fc ED |
820 | /* These may be needed for future network-power-down code. */ |
821 | unsigned long trans_start; /* Time (in jiffies) of last Tx */ | |
822 | ||
823 | int watchdog_timeo; /* used by dev_watchdog() */ | |
824 | struct timer_list watchdog_timer; | |
825 | ||
1da177e4 | 826 | /* Number of references to this device */ |
9356b8fc ED |
827 | atomic_t refcnt ____cacheline_aligned_in_smp; |
828 | ||
1da177e4 LT |
829 | /* delayed register/unregister */ |
830 | struct list_head todo_list; | |
1da177e4 LT |
831 | /* device index hash chain */ |
832 | struct hlist_node index_hlist; | |
833 | ||
572a103d HX |
834 | struct net_device *link_watch_next; |
835 | ||
1da177e4 LT |
836 | /* register/unregister state machine */ |
837 | enum { NETREG_UNINITIALIZED=0, | |
b17a7c17 | 838 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
839 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
840 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
841 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 842 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
1da177e4 LT |
843 | } reg_state; |
844 | ||
d314774c SH |
845 | /* Called from unregister, can be used to call free_netdev */ |
846 | void (*destructor)(struct net_device *dev); | |
1da177e4 | 847 | |
1da177e4 | 848 | #ifdef CONFIG_NETPOLL |
115c1d6e | 849 | struct netpoll_info *npinfo; |
1da177e4 | 850 | #endif |
eae792b7 | 851 | |
c346dca1 | 852 | #ifdef CONFIG_NET_NS |
4a1c5371 EB |
853 | /* Network namespace this network device is inside */ |
854 | struct net *nd_net; | |
c346dca1 | 855 | #endif |
4a1c5371 | 856 | |
4951704b DM |
857 | /* mid-layer private */ |
858 | void *ml_priv; | |
859 | ||
1da177e4 LT |
860 | /* bridge stuff */ |
861 | struct net_bridge_port *br_port; | |
b863ceb7 PM |
862 | /* macvlan */ |
863 | struct macvlan_port *macvlan_port; | |
eca9ebac PM |
864 | /* GARP */ |
865 | struct garp_port *garp_port; | |
1da177e4 | 866 | |
1da177e4 | 867 | /* class/net/name entry */ |
43cb76d9 | 868 | struct device dev; |
fe9925b5 SH |
869 | /* space for optional statistics and wireless sysfs groups */ |
870 | struct attribute_group *sysfs_groups[3]; | |
38f7b870 PM |
871 | |
872 | /* rtnetlink link ops */ | |
873 | const struct rtnl_link_ops *rtnl_link_ops; | |
f25f4e44 | 874 | |
289c79a4 PM |
875 | /* VLAN feature mask */ |
876 | unsigned long vlan_features; | |
877 | ||
82cc1a7a PWJ |
878 | /* for setting kernel sock attribute on TCP connection setup */ |
879 | #define GSO_MAX_SIZE 65536 | |
880 | unsigned int gso_max_size; | |
d314774c | 881 | |
7a6b6f51 | 882 | #ifdef CONFIG_DCB |
2f90b865 AD |
883 | /* Data Center Bridging netlink ops */ |
884 | struct dcbnl_rtnl_ops *dcbnl_ops; | |
885 | #endif | |
886 | ||
4d288d57 YZ |
887 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
888 | /* max exchange id for FCoE LRO by ddp */ | |
889 | unsigned int fcoe_ddp_xid; | |
890 | #endif | |
891 | ||
d314774c SH |
892 | #ifdef CONFIG_COMPAT_NET_DEV_OPS |
893 | struct { | |
894 | int (*init)(struct net_device *dev); | |
895 | void (*uninit)(struct net_device *dev); | |
896 | int (*open)(struct net_device *dev); | |
897 | int (*stop)(struct net_device *dev); | |
00829823 SH |
898 | int (*hard_start_xmit) (struct sk_buff *skb, |
899 | struct net_device *dev); | |
900 | u16 (*select_queue)(struct net_device *dev, | |
901 | struct sk_buff *skb); | |
d314774c SH |
902 | void (*change_rx_flags)(struct net_device *dev, |
903 | int flags); | |
904 | void (*set_rx_mode)(struct net_device *dev); | |
905 | void (*set_multicast_list)(struct net_device *dev); | |
906 | int (*set_mac_address)(struct net_device *dev, | |
907 | void *addr); | |
908 | int (*validate_addr)(struct net_device *dev); | |
909 | int (*do_ioctl)(struct net_device *dev, | |
910 | struct ifreq *ifr, int cmd); | |
911 | int (*set_config)(struct net_device *dev, | |
912 | struct ifmap *map); | |
913 | int (*change_mtu)(struct net_device *dev, int new_mtu); | |
00829823 SH |
914 | int (*neigh_setup)(struct net_device *dev, |
915 | struct neigh_parms *); | |
d314774c SH |
916 | void (*tx_timeout) (struct net_device *dev); |
917 | struct net_device_stats* (*get_stats)(struct net_device *dev); | |
918 | void (*vlan_rx_register)(struct net_device *dev, | |
919 | struct vlan_group *grp); | |
920 | void (*vlan_rx_add_vid)(struct net_device *dev, | |
921 | unsigned short vid); | |
922 | void (*vlan_rx_kill_vid)(struct net_device *dev, | |
923 | unsigned short vid); | |
924 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
925 | void (*poll_controller)(struct net_device *dev); | |
d314774c SH |
926 | #endif |
927 | }; | |
eeda3fd6 | 928 | #endif |
1da177e4 | 929 | }; |
43cb76d9 | 930 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 LT |
931 | |
932 | #define NETDEV_ALIGN 32 | |
933 | #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1) | |
934 | ||
e8a0464c DM |
935 | static inline |
936 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
937 | unsigned int index) | |
938 | { | |
939 | return &dev->_tx[index]; | |
940 | } | |
941 | ||
942 | static inline void netdev_for_each_tx_queue(struct net_device *dev, | |
943 | void (*f)(struct net_device *, | |
944 | struct netdev_queue *, | |
945 | void *), | |
946 | void *arg) | |
947 | { | |
948 | unsigned int i; | |
949 | ||
950 | for (i = 0; i < dev->num_tx_queues; i++) | |
951 | f(dev, &dev->_tx[i], arg); | |
952 | } | |
953 | ||
c346dca1 YH |
954 | /* |
955 | * Net namespace inlines | |
956 | */ | |
957 | static inline | |
958 | struct net *dev_net(const struct net_device *dev) | |
959 | { | |
960 | #ifdef CONFIG_NET_NS | |
961 | return dev->nd_net; | |
962 | #else | |
963 | return &init_net; | |
964 | #endif | |
965 | } | |
966 | ||
967 | static inline | |
f5aa23fd | 968 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 YH |
969 | { |
970 | #ifdef CONFIG_NET_NS | |
f3005d7f DL |
971 | release_net(dev->nd_net); |
972 | dev->nd_net = hold_net(net); | |
c346dca1 YH |
973 | #endif |
974 | } | |
975 | ||
cf85d08f LB |
976 | static inline bool netdev_uses_dsa_tags(struct net_device *dev) |
977 | { | |
978 | #ifdef CONFIG_NET_DSA_TAG_DSA | |
979 | if (dev->dsa_ptr != NULL) | |
980 | return dsa_uses_dsa_tags(dev->dsa_ptr); | |
981 | #endif | |
982 | ||
983 | return 0; | |
984 | } | |
985 | ||
396138f0 LB |
986 | static inline bool netdev_uses_trailer_tags(struct net_device *dev) |
987 | { | |
988 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
989 | if (dev->dsa_ptr != NULL) | |
990 | return dsa_uses_trailer_tags(dev->dsa_ptr); | |
991 | #endif | |
992 | ||
993 | return 0; | |
994 | } | |
995 | ||
bea3348e SH |
996 | /** |
997 | * netdev_priv - access network device private data | |
998 | * @dev: network device | |
999 | * | |
1000 | * Get network device private data | |
1001 | */ | |
6472ce60 | 1002 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 1003 | { |
e3c50d5d DM |
1004 | return (char *)dev + ((sizeof(struct net_device) |
1005 | + NETDEV_ALIGN_CONST) | |
1006 | & ~NETDEV_ALIGN_CONST); | |
1da177e4 LT |
1007 | } |
1008 | ||
1da177e4 LT |
1009 | /* Set the sysfs physical device reference for the network logical device |
1010 | * if set prior to registration will cause a symlink during initialization. | |
1011 | */ | |
43cb76d9 | 1012 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 1013 | |
3b582cc1 SH |
1014 | /** |
1015 | * netif_napi_add - initialize a napi context | |
1016 | * @dev: network device | |
1017 | * @napi: napi context | |
1018 | * @poll: polling function | |
1019 | * @weight: default weight | |
1020 | * | |
1021 | * netif_napi_add() must be used to initialize a napi context prior to calling | |
1022 | * *any* of the other napi related functions. | |
1023 | */ | |
d565b0a1 HX |
1024 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
1025 | int (*poll)(struct napi_struct *, int), int weight); | |
bea3348e | 1026 | |
d8156534 AD |
1027 | /** |
1028 | * netif_napi_del - remove a napi context | |
1029 | * @napi: napi context | |
1030 | * | |
1031 | * netif_napi_del() removes a napi context from the network device napi list | |
1032 | */ | |
d565b0a1 HX |
1033 | void netif_napi_del(struct napi_struct *napi); |
1034 | ||
1035 | struct napi_gro_cb { | |
86911732 HX |
1036 | /* This indicates where we are processing relative to skb->data. */ |
1037 | int data_offset; | |
1038 | ||
d565b0a1 HX |
1039 | /* This is non-zero if the packet may be of the same flow. */ |
1040 | int same_flow; | |
1041 | ||
1042 | /* This is non-zero if the packet cannot be merged with the new skb. */ | |
1043 | int flush; | |
1044 | ||
1045 | /* Number of segments aggregated. */ | |
1046 | int count; | |
5d38a079 HX |
1047 | |
1048 | /* Free the skb? */ | |
1049 | int free; | |
d565b0a1 HX |
1050 | }; |
1051 | ||
1052 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) | |
d8156534 | 1053 | |
1da177e4 | 1054 | struct packet_type { |
f2ccd8fa DM |
1055 | __be16 type; /* This is really htons(ether_type). */ |
1056 | struct net_device *dev; /* NULL is wildcarded here */ | |
1057 | int (*func) (struct sk_buff *, | |
1058 | struct net_device *, | |
1059 | struct packet_type *, | |
1060 | struct net_device *); | |
576a30eb HX |
1061 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
1062 | int features); | |
a430a43d | 1063 | int (*gso_send_check)(struct sk_buff *skb); |
d565b0a1 HX |
1064 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
1065 | struct sk_buff *skb); | |
1066 | int (*gro_complete)(struct sk_buff *skb); | |
1da177e4 LT |
1067 | void *af_packet_priv; |
1068 | struct list_head list; | |
1069 | }; | |
1070 | ||
1071 | #include <linux/interrupt.h> | |
1072 | #include <linux/notifier.h> | |
1073 | ||
1da177e4 LT |
1074 | extern rwlock_t dev_base_lock; /* Device list lock */ |
1075 | ||
7562f876 | 1076 | |
881d966b EB |
1077 | #define for_each_netdev(net, d) \ |
1078 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
1079 | #define for_each_netdev_safe(net, d, n) \ | |
1080 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
1081 | #define for_each_netdev_continue(net, d) \ | |
1082 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
1083 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) | |
7562f876 | 1084 | |
a050c33f DL |
1085 | static inline struct net_device *next_net_device(struct net_device *dev) |
1086 | { | |
1087 | struct list_head *lh; | |
1088 | struct net *net; | |
1089 | ||
c346dca1 | 1090 | net = dev_net(dev); |
a050c33f DL |
1091 | lh = dev->dev_list.next; |
1092 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
1093 | } | |
1094 | ||
1095 | static inline struct net_device *first_net_device(struct net *net) | |
1096 | { | |
1097 | return list_empty(&net->dev_base_head) ? NULL : | |
1098 | net_device_entry(net->dev_base_head.next); | |
1099 | } | |
7562f876 | 1100 | |
1da177e4 LT |
1101 | extern int netdev_boot_setup_check(struct net_device *dev); |
1102 | extern unsigned long netdev_boot_base(const char *prefix, int unit); | |
881d966b EB |
1103 | extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr); |
1104 | extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1105 | extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1da177e4 LT |
1106 | extern void dev_add_pack(struct packet_type *pt); |
1107 | extern void dev_remove_pack(struct packet_type *pt); | |
1108 | extern void __dev_remove_pack(struct packet_type *pt); | |
1109 | ||
881d966b | 1110 | extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags, |
1da177e4 | 1111 | unsigned short mask); |
881d966b EB |
1112 | extern struct net_device *dev_get_by_name(struct net *net, const char *name); |
1113 | extern struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
1da177e4 LT |
1114 | extern int dev_alloc_name(struct net_device *dev, const char *name); |
1115 | extern int dev_open(struct net_device *dev); | |
1116 | extern int dev_close(struct net_device *dev); | |
0187bdfb | 1117 | extern void dev_disable_lro(struct net_device *dev); |
1da177e4 LT |
1118 | extern int dev_queue_xmit(struct sk_buff *skb); |
1119 | extern int register_netdevice(struct net_device *dev); | |
22f8cde5 | 1120 | extern void unregister_netdevice(struct net_device *dev); |
1da177e4 LT |
1121 | extern void free_netdev(struct net_device *dev); |
1122 | extern void synchronize_net(void); | |
1123 | extern int register_netdevice_notifier(struct notifier_block *nb); | |
1124 | extern int unregister_netdevice_notifier(struct notifier_block *nb); | |
937f1ba5 | 1125 | extern int init_dummy_netdev(struct net_device *dev); |
9d40bbda | 1126 | extern void netdev_resync_ops(struct net_device *dev); |
937f1ba5 | 1127 | |
ad7379d4 | 1128 | extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
881d966b EB |
1129 | extern struct net_device *dev_get_by_index(struct net *net, int ifindex); |
1130 | extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
1da177e4 LT |
1131 | extern int dev_restart(struct net_device *dev); |
1132 | #ifdef CONFIG_NETPOLL_TRAP | |
1133 | extern int netpoll_trap(void); | |
1134 | #endif | |
86911732 HX |
1135 | extern void *skb_gro_header(struct sk_buff *skb, unsigned int hlen); |
1136 | extern int skb_gro_receive(struct sk_buff **head, | |
1137 | struct sk_buff *skb); | |
1138 | ||
1139 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) | |
1140 | { | |
1141 | return NAPI_GRO_CB(skb)->data_offset; | |
1142 | } | |
1143 | ||
1144 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) | |
1145 | { | |
1146 | return skb->len - NAPI_GRO_CB(skb)->data_offset; | |
1147 | } | |
1148 | ||
1149 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) | |
1150 | { | |
1151 | NAPI_GRO_CB(skb)->data_offset += len; | |
1152 | } | |
1153 | ||
1154 | static inline void skb_gro_reset_offset(struct sk_buff *skb) | |
1155 | { | |
1156 | NAPI_GRO_CB(skb)->data_offset = 0; | |
1157 | } | |
1da177e4 | 1158 | |
aa4b9f53 HX |
1159 | static inline void *skb_gro_mac_header(struct sk_buff *skb) |
1160 | { | |
edbd9e30 | 1161 | return skb_headlen(skb) ? skb_mac_header(skb) : |
aa4b9f53 HX |
1162 | page_address(skb_shinfo(skb)->frags[0].page) + |
1163 | skb_shinfo(skb)->frags[0].page_offset; | |
1164 | } | |
1165 | ||
36e7b1b8 HX |
1166 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
1167 | { | |
1168 | return skb_headlen(skb) ? skb_network_header(skb) : | |
1169 | page_address(skb_shinfo(skb)->frags[0].page) + | |
1170 | skb_shinfo(skb)->frags[0].page_offset + skb_network_offset(skb); | |
1171 | } | |
1172 | ||
0c4e8581 SH |
1173 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
1174 | unsigned short type, | |
3b04ddde SH |
1175 | const void *daddr, const void *saddr, |
1176 | unsigned len) | |
0c4e8581 | 1177 | { |
f1ecfd5d | 1178 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 1179 | return 0; |
3b04ddde SH |
1180 | |
1181 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
1182 | } |
1183 | ||
b95cce35 SH |
1184 | static inline int dev_parse_header(const struct sk_buff *skb, |
1185 | unsigned char *haddr) | |
1186 | { | |
1187 | const struct net_device *dev = skb->dev; | |
1188 | ||
1b83336b | 1189 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 1190 | return 0; |
3b04ddde | 1191 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
1192 | } |
1193 | ||
1da177e4 LT |
1194 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
1195 | extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); | |
1196 | static inline int unregister_gifconf(unsigned int family) | |
1197 | { | |
1198 | return register_gifconf(family, NULL); | |
1199 | } | |
1200 | ||
1201 | /* | |
1202 | * Incoming packets are placed on per-cpu queues so that | |
1203 | * no locking is needed. | |
1204 | */ | |
1da177e4 LT |
1205 | struct softnet_data |
1206 | { | |
37437bb2 | 1207 | struct Qdisc *output_queue; |
1da177e4 LT |
1208 | struct sk_buff_head input_pkt_queue; |
1209 | struct list_head poll_list; | |
1da177e4 LT |
1210 | struct sk_buff *completion_queue; |
1211 | ||
bea3348e | 1212 | struct napi_struct backlog; |
1da177e4 LT |
1213 | }; |
1214 | ||
1215 | DECLARE_PER_CPU(struct softnet_data,softnet_data); | |
1216 | ||
1217 | #define HAVE_NETIF_QUEUE | |
1218 | ||
37437bb2 | 1219 | extern void __netif_schedule(struct Qdisc *q); |
1da177e4 | 1220 | |
86d804e1 | 1221 | static inline void netif_schedule_queue(struct netdev_queue *txq) |
1da177e4 | 1222 | { |
79d16385 | 1223 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1224 | __netif_schedule(txq->qdisc); |
86d804e1 DM |
1225 | } |
1226 | ||
fd2ea0a7 DM |
1227 | static inline void netif_tx_schedule_all(struct net_device *dev) |
1228 | { | |
1229 | unsigned int i; | |
1230 | ||
1231 | for (i = 0; i < dev->num_tx_queues; i++) | |
1232 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
1233 | } | |
1234 | ||
d29f749e DJ |
1235 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
1236 | { | |
1237 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1238 | } | |
1239 | ||
bea3348e SH |
1240 | /** |
1241 | * netif_start_queue - allow transmit | |
1242 | * @dev: network device | |
1243 | * | |
1244 | * Allow upper layers to call the device hard_start_xmit routine. | |
1245 | */ | |
1da177e4 LT |
1246 | static inline void netif_start_queue(struct net_device *dev) |
1247 | { | |
e8a0464c | 1248 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1249 | } |
1250 | ||
fd2ea0a7 DM |
1251 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
1252 | { | |
1253 | unsigned int i; | |
1254 | ||
1255 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1256 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1257 | netif_tx_start_queue(txq); | |
1258 | } | |
1259 | } | |
1260 | ||
79d16385 | 1261 | static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) |
1da177e4 LT |
1262 | { |
1263 | #ifdef CONFIG_NETPOLL_TRAP | |
5f286e11 | 1264 | if (netpoll_trap()) { |
79d16385 | 1265 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); |
1da177e4 | 1266 | return; |
5f286e11 | 1267 | } |
1da177e4 | 1268 | #endif |
79d16385 | 1269 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state)) |
37437bb2 | 1270 | __netif_schedule(dev_queue->qdisc); |
79d16385 DM |
1271 | } |
1272 | ||
d29f749e DJ |
1273 | /** |
1274 | * netif_wake_queue - restart transmit | |
1275 | * @dev: network device | |
1276 | * | |
1277 | * Allow upper layers to call the device hard_start_xmit routine. | |
1278 | * Used for flow control when transmit resources are available. | |
1279 | */ | |
79d16385 DM |
1280 | static inline void netif_wake_queue(struct net_device *dev) |
1281 | { | |
e8a0464c | 1282 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1283 | } |
1284 | ||
fd2ea0a7 DM |
1285 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
1286 | { | |
1287 | unsigned int i; | |
1288 | ||
1289 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1290 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1291 | netif_tx_wake_queue(txq); | |
1292 | } | |
1293 | } | |
1294 | ||
d29f749e DJ |
1295 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
1296 | { | |
1297 | set_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1298 | } | |
1299 | ||
bea3348e SH |
1300 | /** |
1301 | * netif_stop_queue - stop transmitted packets | |
1302 | * @dev: network device | |
1303 | * | |
1304 | * Stop upper layers calling the device hard_start_xmit routine. | |
1305 | * Used for flow control when transmit resources are unavailable. | |
1306 | */ | |
1da177e4 LT |
1307 | static inline void netif_stop_queue(struct net_device *dev) |
1308 | { | |
e8a0464c | 1309 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1310 | } |
1311 | ||
fd2ea0a7 DM |
1312 | static inline void netif_tx_stop_all_queues(struct net_device *dev) |
1313 | { | |
1314 | unsigned int i; | |
1315 | ||
1316 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1317 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1318 | netif_tx_stop_queue(txq); | |
1319 | } | |
1320 | } | |
1321 | ||
d29f749e DJ |
1322 | static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
1323 | { | |
1324 | return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1325 | } | |
1326 | ||
bea3348e SH |
1327 | /** |
1328 | * netif_queue_stopped - test if transmit queue is flowblocked | |
1329 | * @dev: network device | |
1330 | * | |
1331 | * Test if transmit queue on device is currently unable to send. | |
1332 | */ | |
1da177e4 LT |
1333 | static inline int netif_queue_stopped(const struct net_device *dev) |
1334 | { | |
e8a0464c | 1335 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1336 | } |
1337 | ||
c3f26a26 DM |
1338 | static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue) |
1339 | { | |
1340 | return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state); | |
1341 | } | |
1342 | ||
bea3348e SH |
1343 | /** |
1344 | * netif_running - test if up | |
1345 | * @dev: network device | |
1346 | * | |
1347 | * Test if the device has been brought up. | |
1348 | */ | |
1da177e4 LT |
1349 | static inline int netif_running(const struct net_device *dev) |
1350 | { | |
1351 | return test_bit(__LINK_STATE_START, &dev->state); | |
1352 | } | |
1353 | ||
f25f4e44 PWJ |
1354 | /* |
1355 | * Routines to manage the subqueues on a device. We only need start | |
1356 | * stop, and a check if it's stopped. All other device management is | |
1357 | * done at the overall netdevice level. | |
1358 | * Also test the device if we're multiqueue. | |
1359 | */ | |
bea3348e SH |
1360 | |
1361 | /** | |
1362 | * netif_start_subqueue - allow sending packets on subqueue | |
1363 | * @dev: network device | |
1364 | * @queue_index: sub queue index | |
1365 | * | |
1366 | * Start individual transmit queue of a device with multiple transmit queues. | |
1367 | */ | |
f25f4e44 PWJ |
1368 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
1369 | { | |
fd2ea0a7 DM |
1370 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
1371 | clear_bit(__QUEUE_STATE_XOFF, &txq->state); | |
f25f4e44 PWJ |
1372 | } |
1373 | ||
bea3348e SH |
1374 | /** |
1375 | * netif_stop_subqueue - stop sending packets on subqueue | |
1376 | * @dev: network device | |
1377 | * @queue_index: sub queue index | |
1378 | * | |
1379 | * Stop individual transmit queue of a device with multiple transmit queues. | |
1380 | */ | |
f25f4e44 PWJ |
1381 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
1382 | { | |
fd2ea0a7 | 1383 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1384 | #ifdef CONFIG_NETPOLL_TRAP |
1385 | if (netpoll_trap()) | |
1386 | return; | |
1387 | #endif | |
fd2ea0a7 | 1388 | set_bit(__QUEUE_STATE_XOFF, &txq->state); |
f25f4e44 PWJ |
1389 | } |
1390 | ||
bea3348e SH |
1391 | /** |
1392 | * netif_subqueue_stopped - test status of subqueue | |
1393 | * @dev: network device | |
1394 | * @queue_index: sub queue index | |
1395 | * | |
1396 | * Check individual transmit queue of a device with multiple transmit queues. | |
1397 | */ | |
668f895a | 1398 | static inline int __netif_subqueue_stopped(const struct net_device *dev, |
f25f4e44 PWJ |
1399 | u16 queue_index) |
1400 | { | |
fd2ea0a7 DM |
1401 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
1402 | return test_bit(__QUEUE_STATE_XOFF, &txq->state); | |
f25f4e44 PWJ |
1403 | } |
1404 | ||
668f895a PE |
1405 | static inline int netif_subqueue_stopped(const struct net_device *dev, |
1406 | struct sk_buff *skb) | |
1407 | { | |
1408 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
1409 | } | |
bea3348e SH |
1410 | |
1411 | /** | |
1412 | * netif_wake_subqueue - allow sending packets on subqueue | |
1413 | * @dev: network device | |
1414 | * @queue_index: sub queue index | |
1415 | * | |
1416 | * Resume individual transmit queue of a device with multiple transmit queues. | |
1417 | */ | |
f25f4e44 PWJ |
1418 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) |
1419 | { | |
fd2ea0a7 | 1420 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1421 | #ifdef CONFIG_NETPOLL_TRAP |
1422 | if (netpoll_trap()) | |
1423 | return; | |
1424 | #endif | |
fd2ea0a7 | 1425 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1426 | __netif_schedule(txq->qdisc); |
f25f4e44 PWJ |
1427 | } |
1428 | ||
bea3348e SH |
1429 | /** |
1430 | * netif_is_multiqueue - test if device has multiple transmit queues | |
1431 | * @dev: network device | |
1432 | * | |
1433 | * Check if device has multiple transmit queues | |
bea3348e | 1434 | */ |
f25f4e44 PWJ |
1435 | static inline int netif_is_multiqueue(const struct net_device *dev) |
1436 | { | |
09e83b5d | 1437 | return (dev->num_tx_queues > 1); |
f25f4e44 | 1438 | } |
1da177e4 LT |
1439 | |
1440 | /* Use this variant when it is known for sure that it | |
0ef47309 ML |
1441 | * is executing from hardware interrupt context or with hardware interrupts |
1442 | * disabled. | |
1da177e4 | 1443 | */ |
bea3348e | 1444 | extern void dev_kfree_skb_irq(struct sk_buff *skb); |
1da177e4 LT |
1445 | |
1446 | /* Use this variant in places where it could be invoked | |
0ef47309 ML |
1447 | * from either hardware interrupt or other context, with hardware interrupts |
1448 | * either disabled or enabled. | |
1da177e4 | 1449 | */ |
56079431 | 1450 | extern void dev_kfree_skb_any(struct sk_buff *skb); |
1da177e4 LT |
1451 | |
1452 | #define HAVE_NETIF_RX 1 | |
1453 | extern int netif_rx(struct sk_buff *skb); | |
1454 | extern int netif_rx_ni(struct sk_buff *skb); | |
1455 | #define HAVE_NETIF_RECEIVE_SKB 1 | |
1456 | extern int netif_receive_skb(struct sk_buff *skb); | |
d565b0a1 | 1457 | extern void napi_gro_flush(struct napi_struct *napi); |
96e93eab HX |
1458 | extern int dev_gro_receive(struct napi_struct *napi, |
1459 | struct sk_buff *skb); | |
5d0d9be8 | 1460 | extern int napi_skb_finish(int ret, struct sk_buff *skb); |
d565b0a1 HX |
1461 | extern int napi_gro_receive(struct napi_struct *napi, |
1462 | struct sk_buff *skb); | |
96e93eab HX |
1463 | extern void napi_reuse_skb(struct napi_struct *napi, |
1464 | struct sk_buff *skb); | |
76620aaf | 1465 | extern struct sk_buff * napi_get_frags(struct napi_struct *napi); |
5d0d9be8 HX |
1466 | extern int napi_frags_finish(struct napi_struct *napi, |
1467 | struct sk_buff *skb, int ret); | |
76620aaf HX |
1468 | extern struct sk_buff * napi_frags_skb(struct napi_struct *napi); |
1469 | extern int napi_gro_frags(struct napi_struct *napi); | |
1470 | ||
1471 | static inline void napi_free_frags(struct napi_struct *napi) | |
1472 | { | |
1473 | kfree_skb(napi->skb); | |
1474 | napi->skb = NULL; | |
1475 | } | |
1476 | ||
bc1d0411 | 1477 | extern void netif_nit_deliver(struct sk_buff *skb); |
c2373ee9 | 1478 | extern int dev_valid_name(const char *name); |
881d966b EB |
1479 | extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); |
1480 | extern int dev_ethtool(struct net *net, struct ifreq *); | |
1da177e4 LT |
1481 | extern unsigned dev_get_flags(const struct net_device *); |
1482 | extern int dev_change_flags(struct net_device *, unsigned); | |
cf04a4c7 | 1483 | extern int dev_change_name(struct net_device *, const char *); |
0b815a1a | 1484 | extern int dev_set_alias(struct net_device *, const char *, size_t); |
ce286d32 EB |
1485 | extern int dev_change_net_namespace(struct net_device *, |
1486 | struct net *, const char *); | |
1da177e4 LT |
1487 | extern int dev_set_mtu(struct net_device *, int); |
1488 | extern int dev_set_mac_address(struct net_device *, | |
1489 | struct sockaddr *); | |
f6a78bfc | 1490 | extern int dev_hard_start_xmit(struct sk_buff *skb, |
fd2ea0a7 DM |
1491 | struct net_device *dev, |
1492 | struct netdev_queue *txq); | |
1da177e4 | 1493 | |
20380731 | 1494 | extern int netdev_budget; |
1da177e4 LT |
1495 | |
1496 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
1497 | extern void netdev_run_todo(void); | |
1498 | ||
bea3348e SH |
1499 | /** |
1500 | * dev_put - release reference to device | |
1501 | * @dev: network device | |
1502 | * | |
9ef4429b | 1503 | * Release reference to device to allow it to be freed. |
bea3348e | 1504 | */ |
1da177e4 LT |
1505 | static inline void dev_put(struct net_device *dev) |
1506 | { | |
1507 | atomic_dec(&dev->refcnt); | |
1508 | } | |
1509 | ||
bea3348e SH |
1510 | /** |
1511 | * dev_hold - get reference to device | |
1512 | * @dev: network device | |
1513 | * | |
9ef4429b | 1514 | * Hold reference to device to keep it from being freed. |
bea3348e | 1515 | */ |
15333061 SH |
1516 | static inline void dev_hold(struct net_device *dev) |
1517 | { | |
1518 | atomic_inc(&dev->refcnt); | |
1519 | } | |
1da177e4 LT |
1520 | |
1521 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
1522 | * and _off may be called from IRQ context, but it is caller | |
1523 | * who is responsible for serialization of these calls. | |
b00055aa SR |
1524 | * |
1525 | * The name carrier is inappropriate, these functions should really be | |
1526 | * called netif_lowerlayer_*() because they represent the state of any | |
1527 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
1528 | */ |
1529 | ||
1530 | extern void linkwatch_fire_event(struct net_device *dev); | |
1531 | ||
bea3348e SH |
1532 | /** |
1533 | * netif_carrier_ok - test if carrier present | |
1534 | * @dev: network device | |
1535 | * | |
1536 | * Check if carrier is present on device | |
1537 | */ | |
1da177e4 LT |
1538 | static inline int netif_carrier_ok(const struct net_device *dev) |
1539 | { | |
1540 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
1541 | } | |
1542 | ||
1543 | extern void __netdev_watchdog_up(struct net_device *dev); | |
1544 | ||
0a242efc | 1545 | extern void netif_carrier_on(struct net_device *dev); |
1da177e4 | 1546 | |
0a242efc | 1547 | extern void netif_carrier_off(struct net_device *dev); |
1da177e4 | 1548 | |
bea3348e SH |
1549 | /** |
1550 | * netif_dormant_on - mark device as dormant. | |
1551 | * @dev: network device | |
1552 | * | |
1553 | * Mark device as dormant (as per RFC2863). | |
1554 | * | |
1555 | * The dormant state indicates that the relevant interface is not | |
1556 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
1557 | * in a "pending" state, waiting for some external event. For "on- | |
1558 | * demand" interfaces, this new state identifies the situation where the | |
1559 | * interface is waiting for events to place it in the up state. | |
1560 | * | |
1561 | */ | |
b00055aa SR |
1562 | static inline void netif_dormant_on(struct net_device *dev) |
1563 | { | |
1564 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1565 | linkwatch_fire_event(dev); | |
1566 | } | |
1567 | ||
bea3348e SH |
1568 | /** |
1569 | * netif_dormant_off - set device as not dormant. | |
1570 | * @dev: network device | |
1571 | * | |
1572 | * Device is not in dormant state. | |
1573 | */ | |
b00055aa SR |
1574 | static inline void netif_dormant_off(struct net_device *dev) |
1575 | { | |
1576 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1577 | linkwatch_fire_event(dev); | |
1578 | } | |
1579 | ||
bea3348e SH |
1580 | /** |
1581 | * netif_dormant - test if carrier present | |
1582 | * @dev: network device | |
1583 | * | |
1584 | * Check if carrier is present on device | |
1585 | */ | |
b00055aa SR |
1586 | static inline int netif_dormant(const struct net_device *dev) |
1587 | { | |
1588 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
1589 | } | |
1590 | ||
1591 | ||
bea3348e SH |
1592 | /** |
1593 | * netif_oper_up - test if device is operational | |
1594 | * @dev: network device | |
1595 | * | |
1596 | * Check if carrier is operational | |
1597 | */ | |
b00055aa SR |
1598 | static inline int netif_oper_up(const struct net_device *dev) { |
1599 | return (dev->operstate == IF_OPER_UP || | |
1600 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
1601 | } | |
1602 | ||
bea3348e SH |
1603 | /** |
1604 | * netif_device_present - is device available or removed | |
1605 | * @dev: network device | |
1606 | * | |
1607 | * Check if device has not been removed from system. | |
1608 | */ | |
1da177e4 LT |
1609 | static inline int netif_device_present(struct net_device *dev) |
1610 | { | |
1611 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
1612 | } | |
1613 | ||
56079431 | 1614 | extern void netif_device_detach(struct net_device *dev); |
1da177e4 | 1615 | |
56079431 | 1616 | extern void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
1617 | |
1618 | /* | |
1619 | * Network interface message level settings | |
1620 | */ | |
1621 | #define HAVE_NETIF_MSG 1 | |
1622 | ||
1623 | enum { | |
1624 | NETIF_MSG_DRV = 0x0001, | |
1625 | NETIF_MSG_PROBE = 0x0002, | |
1626 | NETIF_MSG_LINK = 0x0004, | |
1627 | NETIF_MSG_TIMER = 0x0008, | |
1628 | NETIF_MSG_IFDOWN = 0x0010, | |
1629 | NETIF_MSG_IFUP = 0x0020, | |
1630 | NETIF_MSG_RX_ERR = 0x0040, | |
1631 | NETIF_MSG_TX_ERR = 0x0080, | |
1632 | NETIF_MSG_TX_QUEUED = 0x0100, | |
1633 | NETIF_MSG_INTR = 0x0200, | |
1634 | NETIF_MSG_TX_DONE = 0x0400, | |
1635 | NETIF_MSG_RX_STATUS = 0x0800, | |
1636 | NETIF_MSG_PKTDATA = 0x1000, | |
1637 | NETIF_MSG_HW = 0x2000, | |
1638 | NETIF_MSG_WOL = 0x4000, | |
1639 | }; | |
1640 | ||
1641 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
1642 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
1643 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
1644 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
1645 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
1646 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
1647 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
1648 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
1649 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
1650 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
1651 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
1652 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
1653 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
1654 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
1655 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
1656 | ||
1657 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
1658 | { | |
1659 | /* use default */ | |
1660 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
1661 | return default_msg_enable_bits; | |
1662 | if (debug_value == 0) /* no output */ | |
1663 | return 0; | |
1664 | /* set low N bits */ | |
1665 | return (1 << debug_value) - 1; | |
1666 | } | |
1667 | ||
c773e847 | 1668 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 1669 | { |
c773e847 DM |
1670 | spin_lock(&txq->_xmit_lock); |
1671 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
1672 | } |
1673 | ||
fd2ea0a7 DM |
1674 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
1675 | { | |
1676 | spin_lock_bh(&txq->_xmit_lock); | |
1677 | txq->xmit_lock_owner = smp_processor_id(); | |
1678 | } | |
1679 | ||
c3f26a26 DM |
1680 | static inline int __netif_tx_trylock(struct netdev_queue *txq) |
1681 | { | |
1682 | int ok = spin_trylock(&txq->_xmit_lock); | |
1683 | if (likely(ok)) | |
1684 | txq->xmit_lock_owner = smp_processor_id(); | |
1685 | return ok; | |
1686 | } | |
1687 | ||
1688 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
1689 | { | |
1690 | txq->xmit_lock_owner = -1; | |
1691 | spin_unlock(&txq->_xmit_lock); | |
1692 | } | |
1693 | ||
1694 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
1695 | { | |
1696 | txq->xmit_lock_owner = -1; | |
1697 | spin_unlock_bh(&txq->_xmit_lock); | |
1698 | } | |
1699 | ||
d29f749e DJ |
1700 | /** |
1701 | * netif_tx_lock - grab network device transmit lock | |
1702 | * @dev: network device | |
d29f749e DJ |
1703 | * |
1704 | * Get network device transmit lock | |
1705 | */ | |
22dd7495 JHS |
1706 | static inline void netif_tx_lock(struct net_device *dev) |
1707 | { | |
e8a0464c | 1708 | unsigned int i; |
c3f26a26 | 1709 | int cpu; |
c773e847 | 1710 | |
c3f26a26 DM |
1711 | spin_lock(&dev->tx_global_lock); |
1712 | cpu = smp_processor_id(); | |
e8a0464c DM |
1713 | for (i = 0; i < dev->num_tx_queues; i++) { |
1714 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
1715 | |
1716 | /* We are the only thread of execution doing a | |
1717 | * freeze, but we have to grab the _xmit_lock in | |
1718 | * order to synchronize with threads which are in | |
1719 | * the ->hard_start_xmit() handler and already | |
1720 | * checked the frozen bit. | |
1721 | */ | |
e8a0464c | 1722 | __netif_tx_lock(txq, cpu); |
c3f26a26 DM |
1723 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
1724 | __netif_tx_unlock(txq); | |
e8a0464c | 1725 | } |
932ff279 HX |
1726 | } |
1727 | ||
1728 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
1729 | { | |
e8a0464c DM |
1730 | local_bh_disable(); |
1731 | netif_tx_lock(dev); | |
932ff279 HX |
1732 | } |
1733 | ||
932ff279 HX |
1734 | static inline void netif_tx_unlock(struct net_device *dev) |
1735 | { | |
e8a0464c DM |
1736 | unsigned int i; |
1737 | ||
1738 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1739 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c773e847 | 1740 | |
c3f26a26 DM |
1741 | /* No need to grab the _xmit_lock here. If the |
1742 | * queue is not stopped for another reason, we | |
1743 | * force a schedule. | |
1744 | */ | |
1745 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
1746 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) | |
1747 | __netif_schedule(txq->qdisc); | |
1748 | } | |
1749 | spin_unlock(&dev->tx_global_lock); | |
932ff279 HX |
1750 | } |
1751 | ||
1752 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
1753 | { | |
e8a0464c DM |
1754 | netif_tx_unlock(dev); |
1755 | local_bh_enable(); | |
932ff279 HX |
1756 | } |
1757 | ||
c773e847 | 1758 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 1759 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 1760 | __netif_tx_lock(txq, cpu); \ |
22dd7495 JHS |
1761 | } \ |
1762 | } | |
1763 | ||
c773e847 | 1764 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 1765 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 1766 | __netif_tx_unlock(txq); \ |
22dd7495 JHS |
1767 | } \ |
1768 | } | |
1769 | ||
1da177e4 LT |
1770 | static inline void netif_tx_disable(struct net_device *dev) |
1771 | { | |
fd2ea0a7 | 1772 | unsigned int i; |
c3f26a26 | 1773 | int cpu; |
fd2ea0a7 | 1774 | |
c3f26a26 DM |
1775 | local_bh_disable(); |
1776 | cpu = smp_processor_id(); | |
fd2ea0a7 DM |
1777 | for (i = 0; i < dev->num_tx_queues; i++) { |
1778 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
1779 | |
1780 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 1781 | netif_tx_stop_queue(txq); |
c3f26a26 | 1782 | __netif_tx_unlock(txq); |
fd2ea0a7 | 1783 | } |
c3f26a26 | 1784 | local_bh_enable(); |
1da177e4 LT |
1785 | } |
1786 | ||
e308a5d8 DM |
1787 | static inline void netif_addr_lock(struct net_device *dev) |
1788 | { | |
1789 | spin_lock(&dev->addr_list_lock); | |
1790 | } | |
1791 | ||
1792 | static inline void netif_addr_lock_bh(struct net_device *dev) | |
1793 | { | |
1794 | spin_lock_bh(&dev->addr_list_lock); | |
1795 | } | |
1796 | ||
1797 | static inline void netif_addr_unlock(struct net_device *dev) | |
1798 | { | |
1799 | spin_unlock(&dev->addr_list_lock); | |
1800 | } | |
1801 | ||
1802 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
1803 | { | |
1804 | spin_unlock_bh(&dev->addr_list_lock); | |
1805 | } | |
1806 | ||
f001fde5 JP |
1807 | /* |
1808 | * dev_addr_list walker. Should be used only for read access. Call with | |
1809 | * rcu_read_lock held. | |
1810 | */ | |
1811 | #define for_each_dev_addr(dev, ha) \ | |
1812 | list_for_each_entry_rcu(ha, &dev->dev_addr_list, list) | |
1813 | ||
1da177e4 LT |
1814 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
1815 | ||
1816 | extern void ether_setup(struct net_device *dev); | |
1817 | ||
1818 | /* Support for loadable net-drivers */ | |
f25f4e44 PWJ |
1819 | extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, |
1820 | void (*setup)(struct net_device *), | |
1821 | unsigned int queue_count); | |
1822 | #define alloc_netdev(sizeof_priv, name, setup) \ | |
1823 | alloc_netdev_mq(sizeof_priv, name, setup, 1) | |
1da177e4 LT |
1824 | extern int register_netdev(struct net_device *dev); |
1825 | extern void unregister_netdev(struct net_device *dev); | |
f001fde5 JP |
1826 | |
1827 | /* Functions used for device addresses handling */ | |
1828 | extern int dev_addr_add(struct net_device *dev, unsigned char *addr, | |
1829 | unsigned char addr_type); | |
1830 | extern int dev_addr_del(struct net_device *dev, unsigned char *addr, | |
1831 | unsigned char addr_type); | |
1832 | extern int dev_addr_add_multiple(struct net_device *to_dev, | |
1833 | struct net_device *from_dev, | |
1834 | unsigned char addr_type); | |
1835 | extern int dev_addr_del_multiple(struct net_device *to_dev, | |
1836 | struct net_device *from_dev, | |
1837 | unsigned char addr_type); | |
1838 | ||
4417da66 PM |
1839 | /* Functions used for secondary unicast and multicast support */ |
1840 | extern void dev_set_rx_mode(struct net_device *dev); | |
1841 | extern void __dev_set_rx_mode(struct net_device *dev); | |
1842 | extern int dev_unicast_delete(struct net_device *dev, void *addr, int alen); | |
1843 | extern int dev_unicast_add(struct net_device *dev, void *addr, int alen); | |
e83a2ea8 CL |
1844 | extern int dev_unicast_sync(struct net_device *to, struct net_device *from); |
1845 | extern void dev_unicast_unsync(struct net_device *to, struct net_device *from); | |
1da177e4 LT |
1846 | extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all); |
1847 | extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly); | |
a0a400d7 PM |
1848 | extern int dev_mc_sync(struct net_device *to, struct net_device *from); |
1849 | extern void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
61cbc2fc PM |
1850 | extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all); |
1851 | extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly); | |
e83a2ea8 CL |
1852 | extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); |
1853 | extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); | |
dad9b335 WC |
1854 | extern int dev_set_promiscuity(struct net_device *dev, int inc); |
1855 | extern int dev_set_allmulti(struct net_device *dev, int inc); | |
1da177e4 | 1856 | extern void netdev_state_change(struct net_device *dev); |
c1da4ac7 | 1857 | extern void netdev_bonding_change(struct net_device *dev); |
d8a33ac4 | 1858 | extern void netdev_features_change(struct net_device *dev); |
1da177e4 | 1859 | /* Load a device via the kmod */ |
881d966b | 1860 | extern void dev_load(struct net *net, const char *name); |
1da177e4 | 1861 | extern void dev_mcast_init(void); |
eeda3fd6 SH |
1862 | extern const struct net_device_stats *dev_get_stats(struct net_device *dev); |
1863 | ||
1da177e4 LT |
1864 | extern int netdev_max_backlog; |
1865 | extern int weight_p; | |
1866 | extern int netdev_set_master(struct net_device *dev, struct net_device *master); | |
84fa7933 | 1867 | extern int skb_checksum_help(struct sk_buff *skb); |
576a30eb | 1868 | extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); |
fb286bb2 HX |
1869 | #ifdef CONFIG_BUG |
1870 | extern void netdev_rx_csum_fault(struct net_device *dev); | |
1871 | #else | |
1872 | static inline void netdev_rx_csum_fault(struct net_device *dev) | |
1873 | { | |
1874 | } | |
1875 | #endif | |
1da177e4 LT |
1876 | /* rx skb timestamps */ |
1877 | extern void net_enable_timestamp(void); | |
1878 | extern void net_disable_timestamp(void); | |
1879 | ||
20380731 ACM |
1880 | #ifdef CONFIG_PROC_FS |
1881 | extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); | |
1882 | extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); | |
1883 | extern void dev_seq_stop(struct seq_file *seq, void *v); | |
1884 | #endif | |
1885 | ||
b8a9787e JV |
1886 | extern int netdev_class_create_file(struct class_attribute *class_attr); |
1887 | extern void netdev_class_remove_file(struct class_attribute *class_attr); | |
1888 | ||
cf04a4c7 | 1889 | extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len); |
6579e57b | 1890 | |
20380731 ACM |
1891 | extern void linkwatch_run_queue(void); |
1892 | ||
b63365a2 HX |
1893 | unsigned long netdev_increment_features(unsigned long all, unsigned long one, |
1894 | unsigned long mask); | |
1895 | unsigned long netdev_fix_features(unsigned long features, const char *name); | |
7f353bf2 | 1896 | |
bcd76111 | 1897 | static inline int net_gso_ok(int features, int gso_type) |
576a30eb | 1898 | { |
bcd76111 | 1899 | int feature = gso_type << NETIF_F_GSO_SHIFT; |
d6b4991a | 1900 | return (features & feature) == feature; |
576a30eb HX |
1901 | } |
1902 | ||
bcd76111 HX |
1903 | static inline int skb_gso_ok(struct sk_buff *skb, int features) |
1904 | { | |
a430a43d | 1905 | return net_gso_ok(features, skb_shinfo(skb)->gso_type); |
bcd76111 HX |
1906 | } |
1907 | ||
7967168c HX |
1908 | static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) |
1909 | { | |
a430a43d HX |
1910 | return skb_is_gso(skb) && |
1911 | (!skb_gso_ok(skb, dev->features) || | |
1a881f27 HX |
1912 | (skb_shinfo(skb)->frag_list && |
1913 | !(dev->features & NETIF_F_FRAGLIST)) || | |
84fa7933 | 1914 | unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); |
7967168c HX |
1915 | } |
1916 | ||
82cc1a7a PWJ |
1917 | static inline void netif_set_gso_max_size(struct net_device *dev, |
1918 | unsigned int size) | |
1919 | { | |
1920 | dev->gso_max_size = size; | |
1921 | } | |
1922 | ||
7ea49ed7 | 1923 | /* On bonding slaves other than the currently active slave, suppress |
f5b2b966 JV |
1924 | * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and |
1925 | * ARP on active-backup slaves with arp_validate enabled. | |
7ea49ed7 DM |
1926 | */ |
1927 | static inline int skb_bond_should_drop(struct sk_buff *skb) | |
1928 | { | |
1929 | struct net_device *dev = skb->dev; | |
1930 | struct net_device *master = dev->master; | |
1931 | ||
6cf3f41e JV |
1932 | if (master) { |
1933 | if (master->priv_flags & IFF_MASTER_ARPMON) | |
1934 | dev->last_rx = jiffies; | |
1935 | ||
1936 | if (dev->priv_flags & IFF_SLAVE_INACTIVE) { | |
1937 | if ((dev->priv_flags & IFF_SLAVE_NEEDARP) && | |
f3a7c66b | 1938 | skb->protocol == __cpu_to_be16(ETH_P_ARP)) |
7ea49ed7 | 1939 | return 0; |
7ea49ed7 | 1940 | |
6cf3f41e JV |
1941 | if (master->priv_flags & IFF_MASTER_ALB) { |
1942 | if (skb->pkt_type != PACKET_BROADCAST && | |
1943 | skb->pkt_type != PACKET_MULTICAST) | |
1944 | return 0; | |
1945 | } | |
1946 | if (master->priv_flags & IFF_MASTER_8023AD && | |
f3a7c66b | 1947 | skb->protocol == __cpu_to_be16(ETH_P_SLOW)) |
6cf3f41e JV |
1948 | return 0; |
1949 | ||
1950 | return 1; | |
1951 | } | |
7ea49ed7 DM |
1952 | } |
1953 | return 0; | |
1954 | } | |
1955 | ||
505d4f73 | 1956 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 PM |
1957 | |
1958 | static inline int dev_ethtool_get_settings(struct net_device *dev, | |
1959 | struct ethtool_cmd *cmd) | |
1960 | { | |
1961 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings) | |
1962 | return -EOPNOTSUPP; | |
1963 | return dev->ethtool_ops->get_settings(dev, cmd); | |
1964 | } | |
1965 | ||
1966 | static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev) | |
1967 | { | |
1968 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum) | |
1969 | return 0; | |
1970 | return dev->ethtool_ops->get_rx_csum(dev); | |
1971 | } | |
1972 | ||
1973 | static inline u32 dev_ethtool_get_flags(struct net_device *dev) | |
1974 | { | |
1975 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_flags) | |
1976 | return 0; | |
1977 | return dev->ethtool_ops->get_flags(dev); | |
1978 | } | |
1da177e4 LT |
1979 | #endif /* __KERNEL__ */ |
1980 | ||
1981 | #endif /* _LINUX_DEV_H */ |