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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> | |
14 | * Alan Cox, <Alan.Cox@linux.org> | |
15 | * Bjorn Ekwall. <bj0rn@blox.se> | |
16 | * Pekka Riikonen <priikone@poseidon.pspt.fi> | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or | |
19 | * modify it under the terms of the GNU General Public License | |
20 | * as published by the Free Software Foundation; either version | |
21 | * 2 of the License, or (at your option) any later version. | |
22 | * | |
23 | * Moved to /usr/include/linux for NET3 | |
24 | */ | |
25 | #ifndef _LINUX_NETDEVICE_H | |
26 | #define _LINUX_NETDEVICE_H | |
27 | ||
28 | #include <linux/if.h> | |
29 | #include <linux/if_ether.h> | |
30 | #include <linux/if_packet.h> | |
31 | ||
32 | #ifdef __KERNEL__ | |
d7fe0f24 | 33 | #include <linux/timer.h> |
bea3348e | 34 | #include <linux/delay.h> |
1da177e4 LT |
35 | #include <asm/atomic.h> |
36 | #include <asm/cache.h> | |
37 | #include <asm/byteorder.h> | |
38 | ||
1da177e4 LT |
39 | #include <linux/device.h> |
40 | #include <linux/percpu.h> | |
db217334 | 41 | #include <linux/dmaengine.h> |
bea3348e | 42 | #include <linux/workqueue.h> |
1da177e4 | 43 | |
a050c33f DL |
44 | #include <net/net_namespace.h> |
45 | ||
1da177e4 LT |
46 | struct vlan_group; |
47 | struct ethtool_ops; | |
115c1d6e | 48 | struct netpoll_info; |
704232c2 JB |
49 | /* 802.11 specific */ |
50 | struct wireless_dev; | |
1da177e4 LT |
51 | /* source back-compat hooks */ |
52 | #define SET_ETHTOOL_OPS(netdev,ops) \ | |
53 | ( (netdev)->ethtool_ops = (ops) ) | |
54 | ||
55 | #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev | |
56 | functions are available. */ | |
57 | #define HAVE_FREE_NETDEV /* free_netdev() */ | |
58 | #define HAVE_NETDEV_PRIV /* netdev_priv() */ | |
59 | ||
60 | #define NET_XMIT_SUCCESS 0 | |
61 | #define NET_XMIT_DROP 1 /* skb dropped */ | |
62 | #define NET_XMIT_CN 2 /* congestion notification */ | |
63 | #define NET_XMIT_POLICED 3 /* skb is shot by police */ | |
64 | #define NET_XMIT_BYPASS 4 /* packet does not leave via dequeue; | |
65 | (TC use only - dev_queue_xmit | |
66 | returns this as NET_XMIT_SUCCESS) */ | |
67 | ||
68 | /* Backlog congestion levels */ | |
69 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
70 | #define NET_RX_DROP 1 /* packet dropped */ | |
71 | #define NET_RX_CN_LOW 2 /* storm alert, just in case */ | |
72 | #define NET_RX_CN_MOD 3 /* Storm on its way! */ | |
73 | #define NET_RX_CN_HIGH 4 /* The storm is here */ | |
74 | #define NET_RX_BAD 5 /* packet dropped due to kernel error */ | |
75 | ||
b9df3cb8 GR |
76 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
77 | * indicates that the device will soon be dropping packets, or already drops | |
78 | * some packets of the same priority; prompting us to send less aggressively. */ | |
79 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e)) | |
1da177e4 LT |
80 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
81 | ||
82 | #endif | |
83 | ||
84 | #define MAX_ADDR_LEN 32 /* Largest hardware address length */ | |
85 | ||
86 | /* Driver transmit return codes */ | |
87 | #define NETDEV_TX_OK 0 /* driver took care of packet */ | |
88 | #define NETDEV_TX_BUSY 1 /* driver tx path was busy*/ | |
89 | #define NETDEV_TX_LOCKED -1 /* driver tx lock was already taken */ | |
90 | ||
c88e6f51 AB |
91 | #ifdef __KERNEL__ |
92 | ||
1da177e4 LT |
93 | /* |
94 | * Compute the worst case header length according to the protocols | |
95 | * used. | |
96 | */ | |
97 | ||
8388e3da DM |
98 | #if defined(CONFIG_WLAN_80211) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) |
99 | # if defined(CONFIG_MAC80211_MESH) | |
100 | # define LL_MAX_HEADER 128 | |
101 | # else | |
102 | # define LL_MAX_HEADER 96 | |
103 | # endif | |
104 | #elif defined(CONFIG_TR) | |
105 | # define LL_MAX_HEADER 48 | |
1da177e4 | 106 | #else |
8388e3da | 107 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
108 | #endif |
109 | ||
e81c7359 DM |
110 | #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \ |
111 | !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ | |
112 | !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ | |
113 | !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) | |
1da177e4 LT |
114 | #define MAX_HEADER LL_MAX_HEADER |
115 | #else | |
116 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
117 | #endif | |
118 | ||
c88e6f51 AB |
119 | #endif /* __KERNEL__ */ |
120 | ||
1da177e4 LT |
121 | /* |
122 | * Network device statistics. Akin to the 2.0 ether stats but | |
123 | * with byte counters. | |
124 | */ | |
125 | ||
126 | struct net_device_stats | |
127 | { | |
128 | unsigned long rx_packets; /* total packets received */ | |
129 | unsigned long tx_packets; /* total packets transmitted */ | |
130 | unsigned long rx_bytes; /* total bytes received */ | |
131 | unsigned long tx_bytes; /* total bytes transmitted */ | |
132 | unsigned long rx_errors; /* bad packets received */ | |
133 | unsigned long tx_errors; /* packet transmit problems */ | |
134 | unsigned long rx_dropped; /* no space in linux buffers */ | |
135 | unsigned long tx_dropped; /* no space available in linux */ | |
136 | unsigned long multicast; /* multicast packets received */ | |
137 | unsigned long collisions; | |
138 | ||
139 | /* detailed rx_errors: */ | |
140 | unsigned long rx_length_errors; | |
141 | unsigned long rx_over_errors; /* receiver ring buff overflow */ | |
142 | unsigned long rx_crc_errors; /* recved pkt with crc error */ | |
143 | unsigned long rx_frame_errors; /* recv'd frame alignment error */ | |
144 | unsigned long rx_fifo_errors; /* recv'r fifo overrun */ | |
145 | unsigned long rx_missed_errors; /* receiver missed packet */ | |
146 | ||
147 | /* detailed tx_errors */ | |
148 | unsigned long tx_aborted_errors; | |
149 | unsigned long tx_carrier_errors; | |
150 | unsigned long tx_fifo_errors; | |
151 | unsigned long tx_heartbeat_errors; | |
152 | unsigned long tx_window_errors; | |
153 | ||
154 | /* for cslip etc */ | |
155 | unsigned long rx_compressed; | |
156 | unsigned long tx_compressed; | |
157 | }; | |
158 | ||
159 | ||
160 | /* Media selection options. */ | |
161 | enum { | |
162 | IF_PORT_UNKNOWN = 0, | |
163 | IF_PORT_10BASE2, | |
164 | IF_PORT_10BASET, | |
165 | IF_PORT_AUI, | |
166 | IF_PORT_100BASET, | |
167 | IF_PORT_100BASETX, | |
168 | IF_PORT_100BASEFX | |
169 | }; | |
170 | ||
171 | #ifdef __KERNEL__ | |
172 | ||
173 | #include <linux/cache.h> | |
174 | #include <linux/skbuff.h> | |
175 | ||
176 | struct neighbour; | |
177 | struct neigh_parms; | |
178 | struct sk_buff; | |
179 | ||
180 | struct netif_rx_stats | |
181 | { | |
182 | unsigned total; | |
183 | unsigned dropped; | |
184 | unsigned time_squeeze; | |
1da177e4 LT |
185 | unsigned cpu_collision; |
186 | }; | |
187 | ||
188 | DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat); | |
189 | ||
bf742482 PM |
190 | struct dev_addr_list |
191 | { | |
192 | struct dev_addr_list *next; | |
193 | u8 da_addr[MAX_ADDR_LEN]; | |
194 | u8 da_addrlen; | |
a0a400d7 | 195 | u8 da_synced; |
bf742482 PM |
196 | int da_users; |
197 | int da_gusers; | |
198 | }; | |
1da177e4 LT |
199 | |
200 | /* | |
201 | * We tag multicasts with these structures. | |
202 | */ | |
3fba5a8b PM |
203 | |
204 | #define dev_mc_list dev_addr_list | |
205 | #define dmi_addr da_addr | |
206 | #define dmi_addrlen da_addrlen | |
207 | #define dmi_users da_users | |
208 | #define dmi_gusers da_gusers | |
1da177e4 LT |
209 | |
210 | struct hh_cache | |
211 | { | |
212 | struct hh_cache *hh_next; /* Next entry */ | |
213 | atomic_t hh_refcnt; /* number of users */ | |
f0490980 ED |
214 | /* |
215 | * We want hh_output, hh_len, hh_lock and hh_data be a in a separate | |
216 | * cache line on SMP. | |
217 | * They are mostly read, but hh_refcnt may be changed quite frequently, | |
218 | * incurring cache line ping pongs. | |
219 | */ | |
220 | __be16 hh_type ____cacheline_aligned_in_smp; | |
221 | /* protocol identifier, f.e ETH_P_IP | |
1da177e4 LT |
222 | * NOTE: For VLANs, this will be the |
223 | * encapuslated type. --BLG | |
224 | */ | |
d5c42c0e | 225 | u16 hh_len; /* length of header */ |
1da177e4 | 226 | int (*hh_output)(struct sk_buff *skb); |
3644f0ce | 227 | seqlock_t hh_lock; |
1da177e4 LT |
228 | |
229 | /* cached hardware header; allow for machine alignment needs. */ | |
230 | #define HH_DATA_MOD 16 | |
231 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 232 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
233 | #define HH_DATA_ALIGN(__len) \ |
234 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
235 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
236 | }; | |
237 | ||
238 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. | |
239 | * Alternative is: | |
240 | * dev->hard_header_len ? (dev->hard_header_len + | |
241 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
242 | * | |
243 | * We could use other alignment values, but we must maintain the | |
244 | * relationship HH alignment <= LL alignment. | |
f5184d26 JB |
245 | * |
246 | * LL_ALLOCATED_SPACE also takes into account the tailroom the device | |
247 | * may need. | |
1da177e4 LT |
248 | */ |
249 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 250 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 251 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 JB |
252 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
253 | #define LL_ALLOCATED_SPACE(dev) \ | |
254 | ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
1da177e4 | 255 | |
3b04ddde SH |
256 | struct header_ops { |
257 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
258 | unsigned short type, const void *daddr, | |
259 | const void *saddr, unsigned len); | |
260 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); | |
261 | int (*rebuild)(struct sk_buff *skb); | |
262 | #define HAVE_HEADER_CACHE | |
263 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh); | |
264 | void (*cache_update)(struct hh_cache *hh, | |
265 | const struct net_device *dev, | |
266 | const unsigned char *haddr); | |
267 | }; | |
268 | ||
1da177e4 LT |
269 | /* These flag bits are private to the generic network queueing |
270 | * layer, they may not be explicitly referenced by any other | |
271 | * code. | |
272 | */ | |
273 | ||
274 | enum netdev_state_t | |
275 | { | |
1da177e4 LT |
276 | __LINK_STATE_START, |
277 | __LINK_STATE_PRESENT, | |
1da177e4 | 278 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
279 | __LINK_STATE_LINKWATCH_PENDING, |
280 | __LINK_STATE_DORMANT, | |
1da177e4 LT |
281 | }; |
282 | ||
283 | ||
284 | /* | |
285 | * This structure holds at boot time configured netdevice settings. They | |
286 | * are then used in the device probing. | |
287 | */ | |
288 | struct netdev_boot_setup { | |
289 | char name[IFNAMSIZ]; | |
290 | struct ifmap map; | |
291 | }; | |
292 | #define NETDEV_BOOT_SETUP_MAX 8 | |
293 | ||
20380731 | 294 | extern int __init netdev_boot_setup(char *str); |
1da177e4 | 295 | |
bea3348e SH |
296 | /* |
297 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
298 | */ | |
299 | struct napi_struct { | |
300 | /* The poll_list must only be managed by the entity which | |
301 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
302 | * whoever atomically sets that bit can add this napi_struct | |
303 | * to the per-cpu poll_list, and whoever clears that bit | |
304 | * can remove from the list right before clearing the bit. | |
305 | */ | |
306 | struct list_head poll_list; | |
307 | ||
308 | unsigned long state; | |
309 | int weight; | |
310 | int (*poll)(struct napi_struct *, int); | |
311 | #ifdef CONFIG_NETPOLL | |
312 | spinlock_t poll_lock; | |
313 | int poll_owner; | |
314 | struct net_device *dev; | |
315 | struct list_head dev_list; | |
316 | #endif | |
317 | }; | |
318 | ||
319 | enum | |
320 | { | |
321 | NAPI_STATE_SCHED, /* Poll is scheduled */ | |
a0a46196 | 322 | NAPI_STATE_DISABLE, /* Disable pending */ |
bea3348e SH |
323 | }; |
324 | ||
b3c97528 | 325 | extern void __napi_schedule(struct napi_struct *n); |
bea3348e | 326 | |
a0a46196 DM |
327 | static inline int napi_disable_pending(struct napi_struct *n) |
328 | { | |
329 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
330 | } | |
331 | ||
bea3348e SH |
332 | /** |
333 | * napi_schedule_prep - check if napi can be scheduled | |
334 | * @n: napi context | |
335 | * | |
336 | * Test if NAPI routine is already running, and if not mark | |
337 | * it as running. This is used as a condition variable | |
a0a46196 DM |
338 | * insure only one NAPI poll instance runs. We also make |
339 | * sure there is no pending NAPI disable. | |
bea3348e SH |
340 | */ |
341 | static inline int napi_schedule_prep(struct napi_struct *n) | |
342 | { | |
a0a46196 DM |
343 | return !napi_disable_pending(n) && |
344 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); | |
bea3348e SH |
345 | } |
346 | ||
347 | /** | |
348 | * napi_schedule - schedule NAPI poll | |
349 | * @n: napi context | |
350 | * | |
351 | * Schedule NAPI poll routine to be called if it is not already | |
352 | * running. | |
353 | */ | |
354 | static inline void napi_schedule(struct napi_struct *n) | |
355 | { | |
356 | if (napi_schedule_prep(n)) | |
357 | __napi_schedule(n); | |
358 | } | |
359 | ||
bfe13f54 RD |
360 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
361 | static inline int napi_reschedule(struct napi_struct *napi) | |
362 | { | |
363 | if (napi_schedule_prep(napi)) { | |
364 | __napi_schedule(napi); | |
365 | return 1; | |
366 | } | |
367 | return 0; | |
368 | } | |
369 | ||
bea3348e SH |
370 | /** |
371 | * napi_complete - NAPI processing complete | |
372 | * @n: napi context | |
373 | * | |
374 | * Mark NAPI processing as complete. | |
375 | */ | |
376 | static inline void __napi_complete(struct napi_struct *n) | |
377 | { | |
378 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
379 | list_del(&n->poll_list); | |
380 | smp_mb__before_clear_bit(); | |
381 | clear_bit(NAPI_STATE_SCHED, &n->state); | |
382 | } | |
383 | ||
384 | static inline void napi_complete(struct napi_struct *n) | |
385 | { | |
50fd4407 DM |
386 | unsigned long flags; |
387 | ||
388 | local_irq_save(flags); | |
bea3348e | 389 | __napi_complete(n); |
50fd4407 | 390 | local_irq_restore(flags); |
bea3348e SH |
391 | } |
392 | ||
393 | /** | |
394 | * napi_disable - prevent NAPI from scheduling | |
395 | * @n: napi context | |
396 | * | |
397 | * Stop NAPI from being scheduled on this context. | |
398 | * Waits till any outstanding processing completes. | |
399 | */ | |
400 | static inline void napi_disable(struct napi_struct *n) | |
401 | { | |
a0a46196 | 402 | set_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e | 403 | while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) |
43cc7380 | 404 | msleep(1); |
a0a46196 | 405 | clear_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e SH |
406 | } |
407 | ||
408 | /** | |
409 | * napi_enable - enable NAPI scheduling | |
410 | * @n: napi context | |
411 | * | |
412 | * Resume NAPI from being scheduled on this context. | |
413 | * Must be paired with napi_disable. | |
414 | */ | |
415 | static inline void napi_enable(struct napi_struct *n) | |
416 | { | |
417 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
418 | smp_mb__before_clear_bit(); | |
419 | clear_bit(NAPI_STATE_SCHED, &n->state); | |
420 | } | |
421 | ||
c264c3de SH |
422 | #ifdef CONFIG_SMP |
423 | /** | |
424 | * napi_synchronize - wait until NAPI is not running | |
425 | * @n: napi context | |
426 | * | |
427 | * Wait until NAPI is done being scheduled on this context. | |
428 | * Waits till any outstanding processing completes but | |
429 | * does not disable future activations. | |
430 | */ | |
431 | static inline void napi_synchronize(const struct napi_struct *n) | |
432 | { | |
433 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
434 | msleep(1); | |
435 | } | |
436 | #else | |
437 | # define napi_synchronize(n) barrier() | |
438 | #endif | |
439 | ||
79d16385 DM |
440 | enum netdev_queue_state_t |
441 | { | |
442 | __QUEUE_STATE_XOFF, | |
79d16385 DM |
443 | }; |
444 | ||
bb949fbd DM |
445 | struct netdev_queue { |
446 | struct net_device *dev; | |
b0e1e646 | 447 | struct Qdisc *qdisc; |
79d16385 | 448 | unsigned long state; |
c773e847 DM |
449 | spinlock_t _xmit_lock; |
450 | int xmit_lock_owner; | |
b0e1e646 | 451 | struct Qdisc *qdisc_sleeping; |
e8a0464c | 452 | } ____cacheline_aligned_in_smp; |
bb949fbd | 453 | |
1da177e4 LT |
454 | /* |
455 | * The DEVICE structure. | |
456 | * Actually, this whole structure is a big mistake. It mixes I/O | |
457 | * data with strictly "high-level" data, and it has to know about | |
458 | * almost every data structure used in the INET module. | |
459 | * | |
460 | * FIXME: cleanup struct net_device such that network protocol info | |
461 | * moves out. | |
462 | */ | |
463 | ||
464 | struct net_device | |
465 | { | |
466 | ||
467 | /* | |
468 | * This is the first field of the "visible" part of this structure | |
469 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
470 | * the interface. | |
471 | */ | |
472 | char name[IFNAMSIZ]; | |
9356b8fc ED |
473 | /* device name hash chain */ |
474 | struct hlist_node name_hlist; | |
1da177e4 LT |
475 | |
476 | /* | |
477 | * I/O specific fields | |
478 | * FIXME: Merge these and struct ifmap into one | |
479 | */ | |
480 | unsigned long mem_end; /* shared mem end */ | |
481 | unsigned long mem_start; /* shared mem start */ | |
482 | unsigned long base_addr; /* device I/O address */ | |
483 | unsigned int irq; /* device IRQ number */ | |
484 | ||
485 | /* | |
486 | * Some hardware also needs these fields, but they are not | |
487 | * part of the usual set specified in Space.c. | |
488 | */ | |
489 | ||
490 | unsigned char if_port; /* Selectable AUI, TP,..*/ | |
491 | unsigned char dma; /* DMA channel */ | |
492 | ||
493 | unsigned long state; | |
494 | ||
7562f876 | 495 | struct list_head dev_list; |
bea3348e SH |
496 | #ifdef CONFIG_NETPOLL |
497 | struct list_head napi_list; | |
498 | #endif | |
1da177e4 LT |
499 | |
500 | /* The device initialization function. Called only once. */ | |
501 | int (*init)(struct net_device *dev); | |
502 | ||
503 | /* ------- Fields preinitialized in Space.c finish here ------- */ | |
504 | ||
9356b8fc ED |
505 | /* Net device features */ |
506 | unsigned long features; | |
507 | #define NETIF_F_SG 1 /* Scatter/gather IO. */ | |
d212f87b | 508 | #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ |
9356b8fc ED |
509 | #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ |
510 | #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ | |
d212f87b | 511 | #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ |
9356b8fc ED |
512 | #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ |
513 | #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ | |
514 | #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ | |
515 | #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ | |
516 | #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ | |
517 | #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ | |
37c3185a | 518 | #define NETIF_F_GSO 2048 /* Enable software GSO. */ |
e24eb521 CB |
519 | #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ |
520 | /* do not use LLTX in new drivers */ | |
ce286d32 | 521 | #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ |
3ae7c0b2 | 522 | #define NETIF_F_LRO 32768 /* large receive offload */ |
7967168c HX |
523 | |
524 | /* Segmentation offload features */ | |
289c79a4 PM |
525 | #define NETIF_F_GSO_SHIFT 16 |
526 | #define NETIF_F_GSO_MASK 0xffff0000 | |
7967168c | 527 | #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) |
f83ef8c0 | 528 | #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) |
576a30eb | 529 | #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) |
f83ef8c0 HX |
530 | #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) |
531 | #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) | |
9356b8fc | 532 | |
78eb8877 HX |
533 | /* List of features with software fallbacks. */ |
534 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) | |
535 | ||
d212f87b | 536 | |
8648b305 | 537 | #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) |
d212f87b SH |
538 | #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) |
539 | #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) | |
540 | #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) | |
8648b305 | 541 | |
1da177e4 LT |
542 | /* Interface index. Unique device identifier */ |
543 | int ifindex; | |
544 | int iflink; | |
545 | ||
546 | ||
547 | struct net_device_stats* (*get_stats)(struct net_device *dev); | |
c45d286e | 548 | struct net_device_stats stats; |
1da177e4 | 549 | |
b86e0280 | 550 | #ifdef CONFIG_WIRELESS_EXT |
1da177e4 LT |
551 | /* List of functions to handle Wireless Extensions (instead of ioctl). |
552 | * See <net/iw_handler.h> for details. Jean II */ | |
553 | const struct iw_handler_def * wireless_handlers; | |
554 | /* Instance data managed by the core of Wireless Extensions. */ | |
555 | struct iw_public_data * wireless_data; | |
b86e0280 | 556 | #endif |
76fd8593 | 557 | const struct ethtool_ops *ethtool_ops; |
1da177e4 | 558 | |
3b04ddde SH |
559 | /* Hardware header description */ |
560 | const struct header_ops *header_ops; | |
561 | ||
1da177e4 LT |
562 | /* |
563 | * This marks the end of the "visible" part of the structure. All | |
564 | * fields hereafter are internal to the system, and may change at | |
565 | * will (read: may be cleaned up at will). | |
566 | */ | |
567 | ||
1da177e4 | 568 | |
b00055aa | 569 | unsigned int flags; /* interface flags (a la BSD) */ |
1da177e4 LT |
570 | unsigned short gflags; |
571 | unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */ | |
572 | unsigned short padded; /* How much padding added by alloc_netdev() */ | |
573 | ||
b00055aa SR |
574 | unsigned char operstate; /* RFC2863 operstate */ |
575 | unsigned char link_mode; /* mapping policy to operstate */ | |
576 | ||
1da177e4 LT |
577 | unsigned mtu; /* interface MTU value */ |
578 | unsigned short type; /* interface hardware type */ | |
579 | unsigned short hard_header_len; /* hardware hdr length */ | |
1da177e4 | 580 | |
f5184d26 JB |
581 | /* extra head- and tailroom the hardware may need, but not in all cases |
582 | * can this be guaranteed, especially tailroom. Some cases also use | |
583 | * LL_MAX_HEADER instead to allocate the skb. | |
584 | */ | |
585 | unsigned short needed_headroom; | |
586 | unsigned short needed_tailroom; | |
587 | ||
1da177e4 LT |
588 | struct net_device *master; /* Pointer to master device of a group, |
589 | * which this device is member of. | |
590 | */ | |
591 | ||
592 | /* Interface address info. */ | |
a6f9a705 | 593 | unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ |
1da177e4 LT |
594 | unsigned char addr_len; /* hardware address length */ |
595 | unsigned short dev_id; /* for shared network cards */ | |
596 | ||
f1f28aa3 | 597 | spinlock_t addr_list_lock; |
4417da66 PM |
598 | struct dev_addr_list *uc_list; /* Secondary unicast mac addresses */ |
599 | int uc_count; /* Number of installed ucasts */ | |
600 | int uc_promisc; | |
3fba5a8b | 601 | struct dev_addr_list *mc_list; /* Multicast mac addresses */ |
1da177e4 | 602 | int mc_count; /* Number of installed mcasts */ |
9d45abe1 WC |
603 | unsigned int promiscuity; |
604 | unsigned int allmulti; | |
1da177e4 | 605 | |
1da177e4 LT |
606 | |
607 | /* Protocol specific pointers */ | |
608 | ||
609 | void *atalk_ptr; /* AppleTalk link */ | |
610 | void *ip_ptr; /* IPv4 specific data */ | |
611 | void *dn_ptr; /* DECnet specific data */ | |
612 | void *ip6_ptr; /* IPv6 specific data */ | |
613 | void *ec_ptr; /* Econet specific data */ | |
614 | void *ax25_ptr; /* AX.25 specific data */ | |
704232c2 JB |
615 | struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, |
616 | assign before registering */ | |
1da177e4 | 617 | |
9356b8fc ED |
618 | /* |
619 | * Cache line mostly used on receive path (including eth_type_trans()) | |
620 | */ | |
9356b8fc ED |
621 | unsigned long last_rx; /* Time of last Rx */ |
622 | /* Interface address info used in eth_type_trans() */ | |
623 | unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast | |
624 | because most packets are unicast) */ | |
625 | ||
626 | unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ | |
1da177e4 | 627 | |
bb949fbd | 628 | struct netdev_queue rx_queue; |
e8a0464c DM |
629 | |
630 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; | |
fd2ea0a7 DM |
631 | |
632 | /* Number of TX queues allocated at alloc_netdev_mq() time */ | |
e8a0464c | 633 | unsigned int num_tx_queues; |
fd2ea0a7 DM |
634 | |
635 | /* Number of TX queues currently active in device */ | |
636 | unsigned int real_num_tx_queues; | |
637 | ||
1da177e4 LT |
638 | unsigned long tx_queue_len; /* Max frames per queue allowed */ |
639 | ||
9356b8fc ED |
640 | /* |
641 | * One part is mostly used on xmit path (device) | |
642 | */ | |
9356b8fc ED |
643 | void *priv; /* pointer to private data */ |
644 | int (*hard_start_xmit) (struct sk_buff *skb, | |
645 | struct net_device *dev); | |
646 | /* These may be needed for future network-power-down code. */ | |
647 | unsigned long trans_start; /* Time (in jiffies) of last Tx */ | |
648 | ||
649 | int watchdog_timeo; /* used by dev_watchdog() */ | |
650 | struct timer_list watchdog_timer; | |
651 | ||
652 | /* | |
653 | * refcnt is a very hot point, so align it on SMP | |
654 | */ | |
1da177e4 | 655 | /* Number of references to this device */ |
9356b8fc ED |
656 | atomic_t refcnt ____cacheline_aligned_in_smp; |
657 | ||
1da177e4 LT |
658 | /* delayed register/unregister */ |
659 | struct list_head todo_list; | |
1da177e4 LT |
660 | /* device index hash chain */ |
661 | struct hlist_node index_hlist; | |
662 | ||
572a103d HX |
663 | struct net_device *link_watch_next; |
664 | ||
1da177e4 LT |
665 | /* register/unregister state machine */ |
666 | enum { NETREG_UNINITIALIZED=0, | |
b17a7c17 | 667 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
668 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
669 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
670 | NETREG_RELEASED, /* called free_netdev */ | |
671 | } reg_state; | |
672 | ||
1da177e4 LT |
673 | /* Called after device is detached from network. */ |
674 | void (*uninit)(struct net_device *dev); | |
675 | /* Called after last user reference disappears. */ | |
676 | void (*destructor)(struct net_device *dev); | |
677 | ||
678 | /* Pointers to interface service routines. */ | |
679 | int (*open)(struct net_device *dev); | |
680 | int (*stop)(struct net_device *dev); | |
1da177e4 | 681 | #define HAVE_NETDEV_POLL |
24023451 PM |
682 | #define HAVE_CHANGE_RX_FLAGS |
683 | void (*change_rx_flags)(struct net_device *dev, | |
684 | int flags); | |
4417da66 PM |
685 | #define HAVE_SET_RX_MODE |
686 | void (*set_rx_mode)(struct net_device *dev); | |
1da177e4 LT |
687 | #define HAVE_MULTICAST |
688 | void (*set_multicast_list)(struct net_device *dev); | |
689 | #define HAVE_SET_MAC_ADDR | |
690 | int (*set_mac_address)(struct net_device *dev, | |
691 | void *addr); | |
bada339b JG |
692 | #define HAVE_VALIDATE_ADDR |
693 | int (*validate_addr)(struct net_device *dev); | |
1da177e4 LT |
694 | #define HAVE_PRIVATE_IOCTL |
695 | int (*do_ioctl)(struct net_device *dev, | |
696 | struct ifreq *ifr, int cmd); | |
697 | #define HAVE_SET_CONFIG | |
698 | int (*set_config)(struct net_device *dev, | |
699 | struct ifmap *map); | |
1da177e4 LT |
700 | #define HAVE_CHANGE_MTU |
701 | int (*change_mtu)(struct net_device *dev, int new_mtu); | |
702 | ||
703 | #define HAVE_TX_TIMEOUT | |
704 | void (*tx_timeout) (struct net_device *dev); | |
705 | ||
706 | void (*vlan_rx_register)(struct net_device *dev, | |
707 | struct vlan_group *grp); | |
708 | void (*vlan_rx_add_vid)(struct net_device *dev, | |
709 | unsigned short vid); | |
710 | void (*vlan_rx_kill_vid)(struct net_device *dev, | |
711 | unsigned short vid); | |
712 | ||
1da177e4 LT |
713 | int (*neigh_setup)(struct net_device *dev, struct neigh_parms *); |
714 | #ifdef CONFIG_NETPOLL | |
115c1d6e | 715 | struct netpoll_info *npinfo; |
1da177e4 LT |
716 | #endif |
717 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
718 | void (*poll_controller)(struct net_device *dev); | |
719 | #endif | |
720 | ||
eae792b7 DM |
721 | u16 (*select_queue)(struct net_device *dev, |
722 | struct sk_buff *skb); | |
723 | ||
c346dca1 | 724 | #ifdef CONFIG_NET_NS |
4a1c5371 EB |
725 | /* Network namespace this network device is inside */ |
726 | struct net *nd_net; | |
c346dca1 | 727 | #endif |
4a1c5371 | 728 | |
4951704b DM |
729 | /* mid-layer private */ |
730 | void *ml_priv; | |
731 | ||
1da177e4 LT |
732 | /* bridge stuff */ |
733 | struct net_bridge_port *br_port; | |
b863ceb7 PM |
734 | /* macvlan */ |
735 | struct macvlan_port *macvlan_port; | |
eca9ebac PM |
736 | /* GARP */ |
737 | struct garp_port *garp_port; | |
1da177e4 | 738 | |
1da177e4 | 739 | /* class/net/name entry */ |
43cb76d9 | 740 | struct device dev; |
fe9925b5 SH |
741 | /* space for optional statistics and wireless sysfs groups */ |
742 | struct attribute_group *sysfs_groups[3]; | |
38f7b870 PM |
743 | |
744 | /* rtnetlink link ops */ | |
745 | const struct rtnl_link_ops *rtnl_link_ops; | |
f25f4e44 | 746 | |
289c79a4 PM |
747 | /* VLAN feature mask */ |
748 | unsigned long vlan_features; | |
749 | ||
82cc1a7a PWJ |
750 | /* for setting kernel sock attribute on TCP connection setup */ |
751 | #define GSO_MAX_SIZE 65536 | |
752 | unsigned int gso_max_size; | |
1da177e4 | 753 | }; |
43cb76d9 | 754 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 LT |
755 | |
756 | #define NETDEV_ALIGN 32 | |
757 | #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1) | |
758 | ||
e8a0464c DM |
759 | static inline |
760 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
761 | unsigned int index) | |
762 | { | |
763 | return &dev->_tx[index]; | |
764 | } | |
765 | ||
766 | static inline void netdev_for_each_tx_queue(struct net_device *dev, | |
767 | void (*f)(struct net_device *, | |
768 | struct netdev_queue *, | |
769 | void *), | |
770 | void *arg) | |
771 | { | |
772 | unsigned int i; | |
773 | ||
774 | for (i = 0; i < dev->num_tx_queues; i++) | |
775 | f(dev, &dev->_tx[i], arg); | |
776 | } | |
777 | ||
c346dca1 YH |
778 | /* |
779 | * Net namespace inlines | |
780 | */ | |
781 | static inline | |
782 | struct net *dev_net(const struct net_device *dev) | |
783 | { | |
784 | #ifdef CONFIG_NET_NS | |
785 | return dev->nd_net; | |
786 | #else | |
787 | return &init_net; | |
788 | #endif | |
789 | } | |
790 | ||
791 | static inline | |
f5aa23fd | 792 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 YH |
793 | { |
794 | #ifdef CONFIG_NET_NS | |
f3005d7f DL |
795 | release_net(dev->nd_net); |
796 | dev->nd_net = hold_net(net); | |
c346dca1 YH |
797 | #endif |
798 | } | |
799 | ||
bea3348e SH |
800 | /** |
801 | * netdev_priv - access network device private data | |
802 | * @dev: network device | |
803 | * | |
804 | * Get network device private data | |
805 | */ | |
6472ce60 | 806 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 807 | { |
e3c50d5d DM |
808 | return (char *)dev + ((sizeof(struct net_device) |
809 | + NETDEV_ALIGN_CONST) | |
810 | & ~NETDEV_ALIGN_CONST); | |
1da177e4 LT |
811 | } |
812 | ||
1da177e4 LT |
813 | /* Set the sysfs physical device reference for the network logical device |
814 | * if set prior to registration will cause a symlink during initialization. | |
815 | */ | |
43cb76d9 | 816 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 817 | |
3b582cc1 SH |
818 | /** |
819 | * netif_napi_add - initialize a napi context | |
820 | * @dev: network device | |
821 | * @napi: napi context | |
822 | * @poll: polling function | |
823 | * @weight: default weight | |
824 | * | |
825 | * netif_napi_add() must be used to initialize a napi context prior to calling | |
826 | * *any* of the other napi related functions. | |
827 | */ | |
bea3348e SH |
828 | static inline void netif_napi_add(struct net_device *dev, |
829 | struct napi_struct *napi, | |
830 | int (*poll)(struct napi_struct *, int), | |
831 | int weight) | |
832 | { | |
833 | INIT_LIST_HEAD(&napi->poll_list); | |
834 | napi->poll = poll; | |
835 | napi->weight = weight; | |
836 | #ifdef CONFIG_NETPOLL | |
837 | napi->dev = dev; | |
838 | list_add(&napi->dev_list, &dev->napi_list); | |
839 | spin_lock_init(&napi->poll_lock); | |
840 | napi->poll_owner = -1; | |
841 | #endif | |
842 | set_bit(NAPI_STATE_SCHED, &napi->state); | |
843 | } | |
844 | ||
d8156534 AD |
845 | /** |
846 | * netif_napi_del - remove a napi context | |
847 | * @napi: napi context | |
848 | * | |
849 | * netif_napi_del() removes a napi context from the network device napi list | |
850 | */ | |
851 | static inline void netif_napi_del(struct napi_struct *napi) | |
852 | { | |
853 | #ifdef CONFIG_NETPOLL | |
854 | list_del(&napi->dev_list); | |
855 | #endif | |
856 | } | |
857 | ||
1da177e4 | 858 | struct packet_type { |
f2ccd8fa DM |
859 | __be16 type; /* This is really htons(ether_type). */ |
860 | struct net_device *dev; /* NULL is wildcarded here */ | |
861 | int (*func) (struct sk_buff *, | |
862 | struct net_device *, | |
863 | struct packet_type *, | |
864 | struct net_device *); | |
576a30eb HX |
865 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
866 | int features); | |
a430a43d | 867 | int (*gso_send_check)(struct sk_buff *skb); |
1da177e4 LT |
868 | void *af_packet_priv; |
869 | struct list_head list; | |
870 | }; | |
871 | ||
872 | #include <linux/interrupt.h> | |
873 | #include <linux/notifier.h> | |
874 | ||
1da177e4 LT |
875 | extern rwlock_t dev_base_lock; /* Device list lock */ |
876 | ||
7562f876 | 877 | |
881d966b EB |
878 | #define for_each_netdev(net, d) \ |
879 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
880 | #define for_each_netdev_safe(net, d, n) \ | |
881 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
882 | #define for_each_netdev_continue(net, d) \ | |
883 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
884 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) | |
7562f876 | 885 | |
a050c33f DL |
886 | static inline struct net_device *next_net_device(struct net_device *dev) |
887 | { | |
888 | struct list_head *lh; | |
889 | struct net *net; | |
890 | ||
c346dca1 | 891 | net = dev_net(dev); |
a050c33f DL |
892 | lh = dev->dev_list.next; |
893 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
894 | } | |
895 | ||
896 | static inline struct net_device *first_net_device(struct net *net) | |
897 | { | |
898 | return list_empty(&net->dev_base_head) ? NULL : | |
899 | net_device_entry(net->dev_base_head.next); | |
900 | } | |
7562f876 | 901 | |
1da177e4 LT |
902 | extern int netdev_boot_setup_check(struct net_device *dev); |
903 | extern unsigned long netdev_boot_base(const char *prefix, int unit); | |
881d966b EB |
904 | extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr); |
905 | extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
906 | extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1da177e4 LT |
907 | extern void dev_add_pack(struct packet_type *pt); |
908 | extern void dev_remove_pack(struct packet_type *pt); | |
909 | extern void __dev_remove_pack(struct packet_type *pt); | |
910 | ||
881d966b | 911 | extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags, |
1da177e4 | 912 | unsigned short mask); |
881d966b EB |
913 | extern struct net_device *dev_get_by_name(struct net *net, const char *name); |
914 | extern struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
1da177e4 LT |
915 | extern int dev_alloc_name(struct net_device *dev, const char *name); |
916 | extern int dev_open(struct net_device *dev); | |
917 | extern int dev_close(struct net_device *dev); | |
0187bdfb | 918 | extern void dev_disable_lro(struct net_device *dev); |
1da177e4 LT |
919 | extern int dev_queue_xmit(struct sk_buff *skb); |
920 | extern int register_netdevice(struct net_device *dev); | |
22f8cde5 | 921 | extern void unregister_netdevice(struct net_device *dev); |
1da177e4 LT |
922 | extern void free_netdev(struct net_device *dev); |
923 | extern void synchronize_net(void); | |
924 | extern int register_netdevice_notifier(struct notifier_block *nb); | |
925 | extern int unregister_netdevice_notifier(struct notifier_block *nb); | |
ad7379d4 | 926 | extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
881d966b EB |
927 | extern struct net_device *dev_get_by_index(struct net *net, int ifindex); |
928 | extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
1da177e4 LT |
929 | extern int dev_restart(struct net_device *dev); |
930 | #ifdef CONFIG_NETPOLL_TRAP | |
931 | extern int netpoll_trap(void); | |
932 | #endif | |
933 | ||
0c4e8581 SH |
934 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
935 | unsigned short type, | |
3b04ddde SH |
936 | const void *daddr, const void *saddr, |
937 | unsigned len) | |
0c4e8581 | 938 | { |
f1ecfd5d | 939 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 940 | return 0; |
3b04ddde SH |
941 | |
942 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
943 | } |
944 | ||
b95cce35 SH |
945 | static inline int dev_parse_header(const struct sk_buff *skb, |
946 | unsigned char *haddr) | |
947 | { | |
948 | const struct net_device *dev = skb->dev; | |
949 | ||
1b83336b | 950 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 951 | return 0; |
3b04ddde | 952 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
953 | } |
954 | ||
1da177e4 LT |
955 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
956 | extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); | |
957 | static inline int unregister_gifconf(unsigned int family) | |
958 | { | |
959 | return register_gifconf(family, NULL); | |
960 | } | |
961 | ||
962 | /* | |
963 | * Incoming packets are placed on per-cpu queues so that | |
964 | * no locking is needed. | |
965 | */ | |
1da177e4 LT |
966 | struct softnet_data |
967 | { | |
37437bb2 | 968 | struct Qdisc *output_queue; |
1da177e4 LT |
969 | struct sk_buff_head input_pkt_queue; |
970 | struct list_head poll_list; | |
1da177e4 LT |
971 | struct sk_buff *completion_queue; |
972 | ||
bea3348e | 973 | struct napi_struct backlog; |
db217334 CL |
974 | #ifdef CONFIG_NET_DMA |
975 | struct dma_chan *net_dma; | |
976 | #endif | |
1da177e4 LT |
977 | }; |
978 | ||
979 | DECLARE_PER_CPU(struct softnet_data,softnet_data); | |
980 | ||
981 | #define HAVE_NETIF_QUEUE | |
982 | ||
37437bb2 | 983 | extern void __netif_schedule(struct Qdisc *q); |
1da177e4 | 984 | |
86d804e1 | 985 | static inline void netif_schedule_queue(struct netdev_queue *txq) |
1da177e4 | 986 | { |
79d16385 | 987 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 988 | __netif_schedule(txq->qdisc); |
86d804e1 DM |
989 | } |
990 | ||
fd2ea0a7 DM |
991 | static inline void netif_tx_schedule_all(struct net_device *dev) |
992 | { | |
993 | unsigned int i; | |
994 | ||
995 | for (i = 0; i < dev->num_tx_queues; i++) | |
996 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
997 | } | |
998 | ||
bea3348e SH |
999 | /** |
1000 | * netif_start_queue - allow transmit | |
1001 | * @dev: network device | |
1002 | * | |
1003 | * Allow upper layers to call the device hard_start_xmit routine. | |
1004 | */ | |
79d16385 DM |
1005 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
1006 | { | |
1007 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1008 | } | |
1009 | ||
1da177e4 LT |
1010 | static inline void netif_start_queue(struct net_device *dev) |
1011 | { | |
e8a0464c | 1012 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1013 | } |
1014 | ||
fd2ea0a7 DM |
1015 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
1016 | { | |
1017 | unsigned int i; | |
1018 | ||
1019 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1020 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1021 | netif_tx_start_queue(txq); | |
1022 | } | |
1023 | } | |
1024 | ||
bea3348e SH |
1025 | /** |
1026 | * netif_wake_queue - restart transmit | |
1027 | * @dev: network device | |
1028 | * | |
1029 | * Allow upper layers to call the device hard_start_xmit routine. | |
1030 | * Used for flow control when transmit resources are available. | |
1031 | */ | |
79d16385 | 1032 | static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) |
1da177e4 LT |
1033 | { |
1034 | #ifdef CONFIG_NETPOLL_TRAP | |
5f286e11 | 1035 | if (netpoll_trap()) { |
79d16385 | 1036 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); |
1da177e4 | 1037 | return; |
5f286e11 | 1038 | } |
1da177e4 | 1039 | #endif |
79d16385 | 1040 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state)) |
37437bb2 | 1041 | __netif_schedule(dev_queue->qdisc); |
79d16385 DM |
1042 | } |
1043 | ||
1044 | static inline void netif_wake_queue(struct net_device *dev) | |
1045 | { | |
e8a0464c | 1046 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1047 | } |
1048 | ||
fd2ea0a7 DM |
1049 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
1050 | { | |
1051 | unsigned int i; | |
1052 | ||
1053 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1054 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1055 | netif_tx_wake_queue(txq); | |
1056 | } | |
1057 | } | |
1058 | ||
bea3348e SH |
1059 | /** |
1060 | * netif_stop_queue - stop transmitted packets | |
1061 | * @dev: network device | |
1062 | * | |
1063 | * Stop upper layers calling the device hard_start_xmit routine. | |
1064 | * Used for flow control when transmit resources are unavailable. | |
1065 | */ | |
79d16385 DM |
1066 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
1067 | { | |
1068 | set_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1069 | } | |
1070 | ||
1da177e4 LT |
1071 | static inline void netif_stop_queue(struct net_device *dev) |
1072 | { | |
e8a0464c | 1073 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1074 | } |
1075 | ||
fd2ea0a7 DM |
1076 | static inline void netif_tx_stop_all_queues(struct net_device *dev) |
1077 | { | |
1078 | unsigned int i; | |
1079 | ||
1080 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1081 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1082 | netif_tx_stop_queue(txq); | |
1083 | } | |
1084 | } | |
1085 | ||
bea3348e SH |
1086 | /** |
1087 | * netif_queue_stopped - test if transmit queue is flowblocked | |
1088 | * @dev: network device | |
1089 | * | |
1090 | * Test if transmit queue on device is currently unable to send. | |
1091 | */ | |
79d16385 DM |
1092 | static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
1093 | { | |
1094 | return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1095 | } | |
1096 | ||
1da177e4 LT |
1097 | static inline int netif_queue_stopped(const struct net_device *dev) |
1098 | { | |
e8a0464c | 1099 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1100 | } |
1101 | ||
bea3348e SH |
1102 | /** |
1103 | * netif_running - test if up | |
1104 | * @dev: network device | |
1105 | * | |
1106 | * Test if the device has been brought up. | |
1107 | */ | |
1da177e4 LT |
1108 | static inline int netif_running(const struct net_device *dev) |
1109 | { | |
1110 | return test_bit(__LINK_STATE_START, &dev->state); | |
1111 | } | |
1112 | ||
f25f4e44 PWJ |
1113 | /* |
1114 | * Routines to manage the subqueues on a device. We only need start | |
1115 | * stop, and a check if it's stopped. All other device management is | |
1116 | * done at the overall netdevice level. | |
1117 | * Also test the device if we're multiqueue. | |
1118 | */ | |
bea3348e SH |
1119 | |
1120 | /** | |
1121 | * netif_start_subqueue - allow sending packets on subqueue | |
1122 | * @dev: network device | |
1123 | * @queue_index: sub queue index | |
1124 | * | |
1125 | * Start individual transmit queue of a device with multiple transmit queues. | |
1126 | */ | |
f25f4e44 PWJ |
1127 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
1128 | { | |
fd2ea0a7 DM |
1129 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
1130 | clear_bit(__QUEUE_STATE_XOFF, &txq->state); | |
f25f4e44 PWJ |
1131 | } |
1132 | ||
bea3348e SH |
1133 | /** |
1134 | * netif_stop_subqueue - stop sending packets on subqueue | |
1135 | * @dev: network device | |
1136 | * @queue_index: sub queue index | |
1137 | * | |
1138 | * Stop individual transmit queue of a device with multiple transmit queues. | |
1139 | */ | |
f25f4e44 PWJ |
1140 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
1141 | { | |
fd2ea0a7 | 1142 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1143 | #ifdef CONFIG_NETPOLL_TRAP |
1144 | if (netpoll_trap()) | |
1145 | return; | |
1146 | #endif | |
fd2ea0a7 | 1147 | set_bit(__QUEUE_STATE_XOFF, &txq->state); |
f25f4e44 PWJ |
1148 | } |
1149 | ||
bea3348e SH |
1150 | /** |
1151 | * netif_subqueue_stopped - test status of subqueue | |
1152 | * @dev: network device | |
1153 | * @queue_index: sub queue index | |
1154 | * | |
1155 | * Check individual transmit queue of a device with multiple transmit queues. | |
1156 | */ | |
668f895a | 1157 | static inline int __netif_subqueue_stopped(const struct net_device *dev, |
f25f4e44 PWJ |
1158 | u16 queue_index) |
1159 | { | |
fd2ea0a7 DM |
1160 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
1161 | return test_bit(__QUEUE_STATE_XOFF, &txq->state); | |
f25f4e44 PWJ |
1162 | } |
1163 | ||
668f895a PE |
1164 | static inline int netif_subqueue_stopped(const struct net_device *dev, |
1165 | struct sk_buff *skb) | |
1166 | { | |
1167 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
1168 | } | |
bea3348e SH |
1169 | |
1170 | /** | |
1171 | * netif_wake_subqueue - allow sending packets on subqueue | |
1172 | * @dev: network device | |
1173 | * @queue_index: sub queue index | |
1174 | * | |
1175 | * Resume individual transmit queue of a device with multiple transmit queues. | |
1176 | */ | |
f25f4e44 PWJ |
1177 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) |
1178 | { | |
fd2ea0a7 | 1179 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1180 | #ifdef CONFIG_NETPOLL_TRAP |
1181 | if (netpoll_trap()) | |
1182 | return; | |
1183 | #endif | |
fd2ea0a7 | 1184 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1185 | __netif_schedule(txq->qdisc); |
f25f4e44 PWJ |
1186 | } |
1187 | ||
bea3348e SH |
1188 | /** |
1189 | * netif_is_multiqueue - test if device has multiple transmit queues | |
1190 | * @dev: network device | |
1191 | * | |
1192 | * Check if device has multiple transmit queues | |
bea3348e | 1193 | */ |
f25f4e44 PWJ |
1194 | static inline int netif_is_multiqueue(const struct net_device *dev) |
1195 | { | |
09e83b5d | 1196 | return (dev->num_tx_queues > 1); |
f25f4e44 | 1197 | } |
1da177e4 LT |
1198 | |
1199 | /* Use this variant when it is known for sure that it | |
0ef47309 ML |
1200 | * is executing from hardware interrupt context or with hardware interrupts |
1201 | * disabled. | |
1da177e4 | 1202 | */ |
bea3348e | 1203 | extern void dev_kfree_skb_irq(struct sk_buff *skb); |
1da177e4 LT |
1204 | |
1205 | /* Use this variant in places where it could be invoked | |
0ef47309 ML |
1206 | * from either hardware interrupt or other context, with hardware interrupts |
1207 | * either disabled or enabled. | |
1da177e4 | 1208 | */ |
56079431 | 1209 | extern void dev_kfree_skb_any(struct sk_buff *skb); |
1da177e4 LT |
1210 | |
1211 | #define HAVE_NETIF_RX 1 | |
1212 | extern int netif_rx(struct sk_buff *skb); | |
1213 | extern int netif_rx_ni(struct sk_buff *skb); | |
1214 | #define HAVE_NETIF_RECEIVE_SKB 1 | |
1215 | extern int netif_receive_skb(struct sk_buff *skb); | |
bc1d0411 | 1216 | extern void netif_nit_deliver(struct sk_buff *skb); |
c2373ee9 | 1217 | extern int dev_valid_name(const char *name); |
881d966b EB |
1218 | extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); |
1219 | extern int dev_ethtool(struct net *net, struct ifreq *); | |
1da177e4 LT |
1220 | extern unsigned dev_get_flags(const struct net_device *); |
1221 | extern int dev_change_flags(struct net_device *, unsigned); | |
1222 | extern int dev_change_name(struct net_device *, char *); | |
ce286d32 EB |
1223 | extern int dev_change_net_namespace(struct net_device *, |
1224 | struct net *, const char *); | |
1da177e4 LT |
1225 | extern int dev_set_mtu(struct net_device *, int); |
1226 | extern int dev_set_mac_address(struct net_device *, | |
1227 | struct sockaddr *); | |
f6a78bfc | 1228 | extern int dev_hard_start_xmit(struct sk_buff *skb, |
fd2ea0a7 DM |
1229 | struct net_device *dev, |
1230 | struct netdev_queue *txq); | |
1da177e4 | 1231 | |
20380731 | 1232 | extern int netdev_budget; |
1da177e4 LT |
1233 | |
1234 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
1235 | extern void netdev_run_todo(void); | |
1236 | ||
bea3348e SH |
1237 | /** |
1238 | * dev_put - release reference to device | |
1239 | * @dev: network device | |
1240 | * | |
9ef4429b | 1241 | * Release reference to device to allow it to be freed. |
bea3348e | 1242 | */ |
1da177e4 LT |
1243 | static inline void dev_put(struct net_device *dev) |
1244 | { | |
1245 | atomic_dec(&dev->refcnt); | |
1246 | } | |
1247 | ||
bea3348e SH |
1248 | /** |
1249 | * dev_hold - get reference to device | |
1250 | * @dev: network device | |
1251 | * | |
9ef4429b | 1252 | * Hold reference to device to keep it from being freed. |
bea3348e | 1253 | */ |
15333061 SH |
1254 | static inline void dev_hold(struct net_device *dev) |
1255 | { | |
1256 | atomic_inc(&dev->refcnt); | |
1257 | } | |
1da177e4 LT |
1258 | |
1259 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
1260 | * and _off may be called from IRQ context, but it is caller | |
1261 | * who is responsible for serialization of these calls. | |
b00055aa SR |
1262 | * |
1263 | * The name carrier is inappropriate, these functions should really be | |
1264 | * called netif_lowerlayer_*() because they represent the state of any | |
1265 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
1266 | */ |
1267 | ||
1268 | extern void linkwatch_fire_event(struct net_device *dev); | |
1269 | ||
bea3348e SH |
1270 | /** |
1271 | * netif_carrier_ok - test if carrier present | |
1272 | * @dev: network device | |
1273 | * | |
1274 | * Check if carrier is present on device | |
1275 | */ | |
1da177e4 LT |
1276 | static inline int netif_carrier_ok(const struct net_device *dev) |
1277 | { | |
1278 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
1279 | } | |
1280 | ||
1281 | extern void __netdev_watchdog_up(struct net_device *dev); | |
1282 | ||
0a242efc | 1283 | extern void netif_carrier_on(struct net_device *dev); |
1da177e4 | 1284 | |
0a242efc | 1285 | extern void netif_carrier_off(struct net_device *dev); |
1da177e4 | 1286 | |
bea3348e SH |
1287 | /** |
1288 | * netif_dormant_on - mark device as dormant. | |
1289 | * @dev: network device | |
1290 | * | |
1291 | * Mark device as dormant (as per RFC2863). | |
1292 | * | |
1293 | * The dormant state indicates that the relevant interface is not | |
1294 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
1295 | * in a "pending" state, waiting for some external event. For "on- | |
1296 | * demand" interfaces, this new state identifies the situation where the | |
1297 | * interface is waiting for events to place it in the up state. | |
1298 | * | |
1299 | */ | |
b00055aa SR |
1300 | static inline void netif_dormant_on(struct net_device *dev) |
1301 | { | |
1302 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1303 | linkwatch_fire_event(dev); | |
1304 | } | |
1305 | ||
bea3348e SH |
1306 | /** |
1307 | * netif_dormant_off - set device as not dormant. | |
1308 | * @dev: network device | |
1309 | * | |
1310 | * Device is not in dormant state. | |
1311 | */ | |
b00055aa SR |
1312 | static inline void netif_dormant_off(struct net_device *dev) |
1313 | { | |
1314 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1315 | linkwatch_fire_event(dev); | |
1316 | } | |
1317 | ||
bea3348e SH |
1318 | /** |
1319 | * netif_dormant - test if carrier present | |
1320 | * @dev: network device | |
1321 | * | |
1322 | * Check if carrier is present on device | |
1323 | */ | |
b00055aa SR |
1324 | static inline int netif_dormant(const struct net_device *dev) |
1325 | { | |
1326 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
1327 | } | |
1328 | ||
1329 | ||
bea3348e SH |
1330 | /** |
1331 | * netif_oper_up - test if device is operational | |
1332 | * @dev: network device | |
1333 | * | |
1334 | * Check if carrier is operational | |
1335 | */ | |
b00055aa SR |
1336 | static inline int netif_oper_up(const struct net_device *dev) { |
1337 | return (dev->operstate == IF_OPER_UP || | |
1338 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
1339 | } | |
1340 | ||
bea3348e SH |
1341 | /** |
1342 | * netif_device_present - is device available or removed | |
1343 | * @dev: network device | |
1344 | * | |
1345 | * Check if device has not been removed from system. | |
1346 | */ | |
1da177e4 LT |
1347 | static inline int netif_device_present(struct net_device *dev) |
1348 | { | |
1349 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
1350 | } | |
1351 | ||
56079431 | 1352 | extern void netif_device_detach(struct net_device *dev); |
1da177e4 | 1353 | |
56079431 | 1354 | extern void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
1355 | |
1356 | /* | |
1357 | * Network interface message level settings | |
1358 | */ | |
1359 | #define HAVE_NETIF_MSG 1 | |
1360 | ||
1361 | enum { | |
1362 | NETIF_MSG_DRV = 0x0001, | |
1363 | NETIF_MSG_PROBE = 0x0002, | |
1364 | NETIF_MSG_LINK = 0x0004, | |
1365 | NETIF_MSG_TIMER = 0x0008, | |
1366 | NETIF_MSG_IFDOWN = 0x0010, | |
1367 | NETIF_MSG_IFUP = 0x0020, | |
1368 | NETIF_MSG_RX_ERR = 0x0040, | |
1369 | NETIF_MSG_TX_ERR = 0x0080, | |
1370 | NETIF_MSG_TX_QUEUED = 0x0100, | |
1371 | NETIF_MSG_INTR = 0x0200, | |
1372 | NETIF_MSG_TX_DONE = 0x0400, | |
1373 | NETIF_MSG_RX_STATUS = 0x0800, | |
1374 | NETIF_MSG_PKTDATA = 0x1000, | |
1375 | NETIF_MSG_HW = 0x2000, | |
1376 | NETIF_MSG_WOL = 0x4000, | |
1377 | }; | |
1378 | ||
1379 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
1380 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
1381 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
1382 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
1383 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
1384 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
1385 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
1386 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
1387 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
1388 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
1389 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
1390 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
1391 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
1392 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
1393 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
1394 | ||
1395 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
1396 | { | |
1397 | /* use default */ | |
1398 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
1399 | return default_msg_enable_bits; | |
1400 | if (debug_value == 0) /* no output */ | |
1401 | return 0; | |
1402 | /* set low N bits */ | |
1403 | return (1 << debug_value) - 1; | |
1404 | } | |
1405 | ||
0a122576 | 1406 | /* Test if receive needs to be scheduled but only if up */ |
bea3348e SH |
1407 | static inline int netif_rx_schedule_prep(struct net_device *dev, |
1408 | struct napi_struct *napi) | |
1da177e4 | 1409 | { |
a0a46196 | 1410 | return napi_schedule_prep(napi); |
1da177e4 LT |
1411 | } |
1412 | ||
1413 | /* Add interface to tail of rx poll list. This assumes that _prep has | |
1414 | * already been called and returned 1. | |
1415 | */ | |
bea3348e SH |
1416 | static inline void __netif_rx_schedule(struct net_device *dev, |
1417 | struct napi_struct *napi) | |
1418 | { | |
bea3348e SH |
1419 | __napi_schedule(napi); |
1420 | } | |
1da177e4 LT |
1421 | |
1422 | /* Try to reschedule poll. Called by irq handler. */ | |
1423 | ||
bea3348e SH |
1424 | static inline void netif_rx_schedule(struct net_device *dev, |
1425 | struct napi_struct *napi) | |
1da177e4 | 1426 | { |
bea3348e SH |
1427 | if (netif_rx_schedule_prep(dev, napi)) |
1428 | __netif_rx_schedule(dev, napi); | |
1da177e4 LT |
1429 | } |
1430 | ||
bea3348e SH |
1431 | /* Try to reschedule poll. Called by dev->poll() after netif_rx_complete(). */ |
1432 | static inline int netif_rx_reschedule(struct net_device *dev, | |
1433 | struct napi_struct *napi) | |
1da177e4 | 1434 | { |
bea3348e SH |
1435 | if (napi_schedule_prep(napi)) { |
1436 | __netif_rx_schedule(dev, napi); | |
1da177e4 LT |
1437 | return 1; |
1438 | } | |
1439 | return 0; | |
1440 | } | |
1441 | ||
b0ba6667 HX |
1442 | /* same as netif_rx_complete, except that local_irq_save(flags) |
1443 | * has already been issued | |
1444 | */ | |
bea3348e SH |
1445 | static inline void __netif_rx_complete(struct net_device *dev, |
1446 | struct napi_struct *napi) | |
b0ba6667 | 1447 | { |
bea3348e | 1448 | __napi_complete(napi); |
b0ba6667 HX |
1449 | } |
1450 | ||
1da177e4 LT |
1451 | /* Remove interface from poll list: it must be in the poll list |
1452 | * on current cpu. This primitive is called by dev->poll(), when | |
1453 | * it completes the work. The device cannot be out of poll list at this | |
1454 | * moment, it is BUG(). | |
1455 | */ | |
bea3348e SH |
1456 | static inline void netif_rx_complete(struct net_device *dev, |
1457 | struct napi_struct *napi) | |
1da177e4 LT |
1458 | { |
1459 | unsigned long flags; | |
1460 | ||
1461 | local_irq_save(flags); | |
bea3348e | 1462 | __netif_rx_complete(dev, napi); |
1da177e4 LT |
1463 | local_irq_restore(flags); |
1464 | } | |
1465 | ||
bea3348e SH |
1466 | /** |
1467 | * netif_tx_lock - grab network device transmit lock | |
1468 | * @dev: network device | |
c4ea43c5 | 1469 | * @cpu: cpu number of lock owner |
bea3348e SH |
1470 | * |
1471 | * Get network device transmit lock | |
1472 | */ | |
c773e847 | 1473 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 1474 | { |
c773e847 DM |
1475 | spin_lock(&txq->_xmit_lock); |
1476 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
1477 | } |
1478 | ||
fd2ea0a7 DM |
1479 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
1480 | { | |
1481 | spin_lock_bh(&txq->_xmit_lock); | |
1482 | txq->xmit_lock_owner = smp_processor_id(); | |
1483 | } | |
1484 | ||
22dd7495 JHS |
1485 | static inline void netif_tx_lock(struct net_device *dev) |
1486 | { | |
e8a0464c DM |
1487 | int cpu = smp_processor_id(); |
1488 | unsigned int i; | |
c773e847 | 1489 | |
e8a0464c DM |
1490 | for (i = 0; i < dev->num_tx_queues; i++) { |
1491 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1492 | __netif_tx_lock(txq, cpu); | |
1493 | } | |
932ff279 HX |
1494 | } |
1495 | ||
1496 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
1497 | { | |
e8a0464c DM |
1498 | local_bh_disable(); |
1499 | netif_tx_lock(dev); | |
932ff279 HX |
1500 | } |
1501 | ||
c773e847 | 1502 | static inline int __netif_tx_trylock(struct netdev_queue *txq) |
932ff279 | 1503 | { |
c773e847 | 1504 | int ok = spin_trylock(&txq->_xmit_lock); |
53c4b2cc | 1505 | if (likely(ok)) |
c773e847 | 1506 | txq->xmit_lock_owner = smp_processor_id(); |
53c4b2cc | 1507 | return ok; |
932ff279 HX |
1508 | } |
1509 | ||
c773e847 DM |
1510 | static inline int netif_tx_trylock(struct net_device *dev) |
1511 | { | |
e8a0464c | 1512 | return __netif_tx_trylock(netdev_get_tx_queue(dev, 0)); |
c773e847 DM |
1513 | } |
1514 | ||
1515 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
1516 | { | |
1517 | txq->xmit_lock_owner = -1; | |
1518 | spin_unlock(&txq->_xmit_lock); | |
1519 | } | |
1520 | ||
fd2ea0a7 DM |
1521 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) |
1522 | { | |
1523 | txq->xmit_lock_owner = -1; | |
1524 | spin_unlock_bh(&txq->_xmit_lock); | |
1525 | } | |
1526 | ||
932ff279 HX |
1527 | static inline void netif_tx_unlock(struct net_device *dev) |
1528 | { | |
e8a0464c DM |
1529 | unsigned int i; |
1530 | ||
1531 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1532 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1533 | __netif_tx_unlock(txq); | |
1534 | } | |
c773e847 | 1535 | |
932ff279 HX |
1536 | } |
1537 | ||
1538 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
1539 | { | |
e8a0464c DM |
1540 | netif_tx_unlock(dev); |
1541 | local_bh_enable(); | |
932ff279 HX |
1542 | } |
1543 | ||
c773e847 | 1544 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 1545 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 1546 | __netif_tx_lock(txq, cpu); \ |
22dd7495 JHS |
1547 | } \ |
1548 | } | |
1549 | ||
c773e847 | 1550 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 1551 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 1552 | __netif_tx_unlock(txq); \ |
22dd7495 JHS |
1553 | } \ |
1554 | } | |
1555 | ||
1da177e4 LT |
1556 | static inline void netif_tx_disable(struct net_device *dev) |
1557 | { | |
fd2ea0a7 DM |
1558 | unsigned int i; |
1559 | ||
932ff279 | 1560 | netif_tx_lock_bh(dev); |
fd2ea0a7 DM |
1561 | for (i = 0; i < dev->num_tx_queues; i++) { |
1562 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1563 | netif_tx_stop_queue(txq); | |
1564 | } | |
932ff279 | 1565 | netif_tx_unlock_bh(dev); |
1da177e4 LT |
1566 | } |
1567 | ||
e308a5d8 DM |
1568 | static inline void netif_addr_lock(struct net_device *dev) |
1569 | { | |
1570 | spin_lock(&dev->addr_list_lock); | |
1571 | } | |
1572 | ||
1573 | static inline void netif_addr_lock_bh(struct net_device *dev) | |
1574 | { | |
1575 | spin_lock_bh(&dev->addr_list_lock); | |
1576 | } | |
1577 | ||
1578 | static inline void netif_addr_unlock(struct net_device *dev) | |
1579 | { | |
1580 | spin_unlock(&dev->addr_list_lock); | |
1581 | } | |
1582 | ||
1583 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
1584 | { | |
1585 | spin_unlock_bh(&dev->addr_list_lock); | |
1586 | } | |
1587 | ||
1da177e4 LT |
1588 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
1589 | ||
1590 | extern void ether_setup(struct net_device *dev); | |
1591 | ||
1592 | /* Support for loadable net-drivers */ | |
f25f4e44 PWJ |
1593 | extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, |
1594 | void (*setup)(struct net_device *), | |
1595 | unsigned int queue_count); | |
1596 | #define alloc_netdev(sizeof_priv, name, setup) \ | |
1597 | alloc_netdev_mq(sizeof_priv, name, setup, 1) | |
1da177e4 LT |
1598 | extern int register_netdev(struct net_device *dev); |
1599 | extern void unregister_netdev(struct net_device *dev); | |
4417da66 PM |
1600 | /* Functions used for secondary unicast and multicast support */ |
1601 | extern void dev_set_rx_mode(struct net_device *dev); | |
1602 | extern void __dev_set_rx_mode(struct net_device *dev); | |
1603 | extern int dev_unicast_delete(struct net_device *dev, void *addr, int alen); | |
1604 | extern int dev_unicast_add(struct net_device *dev, void *addr, int alen); | |
e83a2ea8 CL |
1605 | extern int dev_unicast_sync(struct net_device *to, struct net_device *from); |
1606 | extern void dev_unicast_unsync(struct net_device *to, struct net_device *from); | |
1da177e4 LT |
1607 | extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all); |
1608 | extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly); | |
a0a400d7 PM |
1609 | extern int dev_mc_sync(struct net_device *to, struct net_device *from); |
1610 | extern void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
61cbc2fc PM |
1611 | extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all); |
1612 | extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly); | |
e83a2ea8 CL |
1613 | extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); |
1614 | extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); | |
dad9b335 WC |
1615 | extern int dev_set_promiscuity(struct net_device *dev, int inc); |
1616 | extern int dev_set_allmulti(struct net_device *dev, int inc); | |
1da177e4 | 1617 | extern void netdev_state_change(struct net_device *dev); |
c1da4ac7 | 1618 | extern void netdev_bonding_change(struct net_device *dev); |
d8a33ac4 | 1619 | extern void netdev_features_change(struct net_device *dev); |
1da177e4 | 1620 | /* Load a device via the kmod */ |
881d966b | 1621 | extern void dev_load(struct net *net, const char *name); |
1da177e4 LT |
1622 | extern void dev_mcast_init(void); |
1623 | extern int netdev_max_backlog; | |
1624 | extern int weight_p; | |
1625 | extern int netdev_set_master(struct net_device *dev, struct net_device *master); | |
84fa7933 | 1626 | extern int skb_checksum_help(struct sk_buff *skb); |
576a30eb | 1627 | extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); |
fb286bb2 HX |
1628 | #ifdef CONFIG_BUG |
1629 | extern void netdev_rx_csum_fault(struct net_device *dev); | |
1630 | #else | |
1631 | static inline void netdev_rx_csum_fault(struct net_device *dev) | |
1632 | { | |
1633 | } | |
1634 | #endif | |
1da177e4 LT |
1635 | /* rx skb timestamps */ |
1636 | extern void net_enable_timestamp(void); | |
1637 | extern void net_disable_timestamp(void); | |
1638 | ||
20380731 ACM |
1639 | #ifdef CONFIG_PROC_FS |
1640 | extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); | |
1641 | extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); | |
1642 | extern void dev_seq_stop(struct seq_file *seq, void *v); | |
1643 | #endif | |
1644 | ||
b8a9787e JV |
1645 | extern int netdev_class_create_file(struct class_attribute *class_attr); |
1646 | extern void netdev_class_remove_file(struct class_attribute *class_attr); | |
1647 | ||
6579e57b AV |
1648 | extern char *netdev_drivername(struct net_device *dev, char *buffer, int len); |
1649 | ||
20380731 ACM |
1650 | extern void linkwatch_run_queue(void); |
1651 | ||
7f353bf2 HX |
1652 | extern int netdev_compute_features(unsigned long all, unsigned long one); |
1653 | ||
bcd76111 | 1654 | static inline int net_gso_ok(int features, int gso_type) |
576a30eb | 1655 | { |
bcd76111 | 1656 | int feature = gso_type << NETIF_F_GSO_SHIFT; |
d6b4991a | 1657 | return (features & feature) == feature; |
576a30eb HX |
1658 | } |
1659 | ||
bcd76111 HX |
1660 | static inline int skb_gso_ok(struct sk_buff *skb, int features) |
1661 | { | |
a430a43d | 1662 | return net_gso_ok(features, skb_shinfo(skb)->gso_type); |
bcd76111 HX |
1663 | } |
1664 | ||
7967168c HX |
1665 | static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) |
1666 | { | |
a430a43d HX |
1667 | return skb_is_gso(skb) && |
1668 | (!skb_gso_ok(skb, dev->features) || | |
84fa7933 | 1669 | unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); |
7967168c HX |
1670 | } |
1671 | ||
82cc1a7a PWJ |
1672 | static inline void netif_set_gso_max_size(struct net_device *dev, |
1673 | unsigned int size) | |
1674 | { | |
1675 | dev->gso_max_size = size; | |
1676 | } | |
1677 | ||
7ea49ed7 | 1678 | /* On bonding slaves other than the currently active slave, suppress |
f5b2b966 JV |
1679 | * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and |
1680 | * ARP on active-backup slaves with arp_validate enabled. | |
7ea49ed7 DM |
1681 | */ |
1682 | static inline int skb_bond_should_drop(struct sk_buff *skb) | |
1683 | { | |
1684 | struct net_device *dev = skb->dev; | |
1685 | struct net_device *master = dev->master; | |
1686 | ||
1687 | if (master && | |
1688 | (dev->priv_flags & IFF_SLAVE_INACTIVE)) { | |
f5b2b966 JV |
1689 | if ((dev->priv_flags & IFF_SLAVE_NEEDARP) && |
1690 | skb->protocol == __constant_htons(ETH_P_ARP)) | |
1691 | return 0; | |
1692 | ||
7ea49ed7 DM |
1693 | if (master->priv_flags & IFF_MASTER_ALB) { |
1694 | if (skb->pkt_type != PACKET_BROADCAST && | |
1695 | skb->pkt_type != PACKET_MULTICAST) | |
1696 | return 0; | |
1697 | } | |
1698 | if (master->priv_flags & IFF_MASTER_8023AD && | |
1699 | skb->protocol == __constant_htons(ETH_P_SLOW)) | |
1700 | return 0; | |
1701 | ||
1702 | return 1; | |
1703 | } | |
1704 | return 0; | |
1705 | } | |
1706 | ||
1da177e4 LT |
1707 | #endif /* __KERNEL__ */ |
1708 | ||
1709 | #endif /* _LINUX_DEV_H */ |