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