Commit | Line | Data |
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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> | |
95c26df8 | 31 | #include <linux/if_link.h> |
1da177e4 LT |
32 | |
33 | #ifdef __KERNEL__ | |
ed77134b | 34 | #include <linux/pm_qos_params.h> |
d7fe0f24 | 35 | #include <linux/timer.h> |
bea3348e | 36 | #include <linux/delay.h> |
cc0be322 | 37 | #include <linux/mm.h> |
1da177e4 LT |
38 | #include <asm/atomic.h> |
39 | #include <asm/cache.h> | |
40 | #include <asm/byteorder.h> | |
41 | ||
1da177e4 LT |
42 | #include <linux/device.h> |
43 | #include <linux/percpu.h> | |
4d5b78c0 | 44 | #include <linux/rculist.h> |
db217334 | 45 | #include <linux/dmaengine.h> |
bea3348e | 46 | #include <linux/workqueue.h> |
1da177e4 | 47 | |
b1b67dd4 | 48 | #include <linux/ethtool.h> |
a050c33f | 49 | #include <net/net_namespace.h> |
cf85d08f | 50 | #include <net/dsa.h> |
7a6b6f51 | 51 | #ifdef CONFIG_DCB |
2f90b865 AD |
52 | #include <net/dcbnl.h> |
53 | #endif | |
a050c33f | 54 | |
1da177e4 | 55 | struct vlan_group; |
115c1d6e | 56 | struct netpoll_info; |
c1f19b51 | 57 | struct phy_device; |
704232c2 JB |
58 | /* 802.11 specific */ |
59 | struct wireless_dev; | |
1da177e4 LT |
60 | /* source back-compat hooks */ |
61 | #define SET_ETHTOOL_OPS(netdev,ops) \ | |
62 | ( (netdev)->ethtool_ops = (ops) ) | |
63 | ||
64 | #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev | |
65 | functions are available. */ | |
66 | #define HAVE_FREE_NETDEV /* free_netdev() */ | |
67 | #define HAVE_NETDEV_PRIV /* netdev_priv() */ | |
68 | ||
c1f79426 SA |
69 | /* hardware address assignment types */ |
70 | #define NET_ADDR_PERM 0 /* address is permanent (default) */ | |
71 | #define NET_ADDR_RANDOM 1 /* address is generated randomly */ | |
72 | #define NET_ADDR_STOLEN 2 /* address is stolen from other device */ | |
73 | ||
9a1654ba JP |
74 | /* Backlog congestion levels */ |
75 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
76 | #define NET_RX_DROP 1 /* packet dropped */ | |
77 | ||
572a9d7b PM |
78 | /* |
79 | * Transmit return codes: transmit return codes originate from three different | |
80 | * namespaces: | |
81 | * | |
82 | * - qdisc return codes | |
83 | * - driver transmit return codes | |
84 | * - errno values | |
85 | * | |
86 | * Drivers are allowed to return any one of those in their hard_start_xmit() | |
87 | * function. Real network devices commonly used with qdiscs should only return | |
88 | * the driver transmit return codes though - when qdiscs are used, the actual | |
89 | * transmission happens asynchronously, so the value is not propagated to | |
90 | * higher layers. Virtual network devices transmit synchronously, in this case | |
91 | * the driver transmit return codes are consumed by dev_queue_xmit(), all | |
92 | * others are propagated to higher layers. | |
93 | */ | |
94 | ||
95 | /* qdisc ->enqueue() return codes. */ | |
96 | #define NET_XMIT_SUCCESS 0x00 | |
9a1654ba JP |
97 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
98 | #define NET_XMIT_CN 0x02 /* congestion notification */ | |
99 | #define NET_XMIT_POLICED 0x03 /* skb is shot by police */ | |
100 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ | |
1da177e4 | 101 | |
b9df3cb8 GR |
102 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
103 | * indicates that the device will soon be dropping packets, or already drops | |
104 | * some packets of the same priority; prompting us to send less aggressively. */ | |
572a9d7b | 105 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
1da177e4 LT |
106 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
107 | ||
dc1f8bf6 | 108 | /* Driver transmit return codes */ |
9a1654ba | 109 | #define NETDEV_TX_MASK 0xf0 |
572a9d7b | 110 | |
dc1f8bf6 | 111 | enum netdev_tx { |
572a9d7b | 112 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
9a1654ba JP |
113 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
114 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ | |
115 | NETDEV_TX_LOCKED = 0x20, /* driver tx lock was already taken */ | |
dc1f8bf6 SH |
116 | }; |
117 | typedef enum netdev_tx netdev_tx_t; | |
118 | ||
9a1654ba JP |
119 | /* |
120 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; | |
121 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. | |
122 | */ | |
123 | static inline bool dev_xmit_complete(int rc) | |
124 | { | |
125 | /* | |
126 | * Positive cases with an skb consumed by a driver: | |
127 | * - successful transmission (rc == NETDEV_TX_OK) | |
128 | * - error while transmitting (rc < 0) | |
129 | * - error while queueing to a different device (rc & NET_XMIT_MASK) | |
130 | */ | |
131 | if (likely(rc < NET_XMIT_MASK)) | |
132 | return true; | |
133 | ||
134 | return false; | |
135 | } | |
136 | ||
1da177e4 LT |
137 | #endif |
138 | ||
139 | #define MAX_ADDR_LEN 32 /* Largest hardware address length */ | |
140 | ||
c88e6f51 | 141 | #ifdef __KERNEL__ |
1da177e4 LT |
142 | /* |
143 | * Compute the worst case header length according to the protocols | |
144 | * used. | |
145 | */ | |
fe2918b0 | 146 | |
caf66e58 | 147 | #if defined(CONFIG_WLAN) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) |
8388e3da DM |
148 | # if defined(CONFIG_MAC80211_MESH) |
149 | # define LL_MAX_HEADER 128 | |
150 | # else | |
151 | # define LL_MAX_HEADER 96 | |
152 | # endif | |
c759a6b4 | 153 | #elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE) |
8388e3da | 154 | # define LL_MAX_HEADER 48 |
1da177e4 | 155 | #else |
8388e3da | 156 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
157 | #endif |
158 | ||
e81c7359 DM |
159 | #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \ |
160 | !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ | |
161 | !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ | |
162 | !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) | |
1da177e4 LT |
163 | #define MAX_HEADER LL_MAX_HEADER |
164 | #else | |
165 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
166 | #endif | |
167 | ||
168 | /* | |
be1f3c2c BH |
169 | * Old network device statistics. Fields are native words |
170 | * (unsigned long) so they can be read and written atomically. | |
1da177e4 | 171 | */ |
fe2918b0 | 172 | |
d94d9fee | 173 | struct net_device_stats { |
3cfde79c BH |
174 | unsigned long rx_packets; |
175 | unsigned long tx_packets; | |
176 | unsigned long rx_bytes; | |
177 | unsigned long tx_bytes; | |
178 | unsigned long rx_errors; | |
179 | unsigned long tx_errors; | |
180 | unsigned long rx_dropped; | |
181 | unsigned long tx_dropped; | |
182 | unsigned long multicast; | |
1da177e4 | 183 | unsigned long collisions; |
1da177e4 | 184 | unsigned long rx_length_errors; |
3cfde79c BH |
185 | unsigned long rx_over_errors; |
186 | unsigned long rx_crc_errors; | |
187 | unsigned long rx_frame_errors; | |
188 | unsigned long rx_fifo_errors; | |
189 | unsigned long rx_missed_errors; | |
1da177e4 LT |
190 | unsigned long tx_aborted_errors; |
191 | unsigned long tx_carrier_errors; | |
192 | unsigned long tx_fifo_errors; | |
193 | unsigned long tx_heartbeat_errors; | |
194 | unsigned long tx_window_errors; | |
1da177e4 LT |
195 | unsigned long rx_compressed; |
196 | unsigned long tx_compressed; | |
197 | }; | |
198 | ||
be1f3c2c BH |
199 | #endif /* __KERNEL__ */ |
200 | ||
1da177e4 LT |
201 | |
202 | /* Media selection options. */ | |
203 | enum { | |
204 | IF_PORT_UNKNOWN = 0, | |
205 | IF_PORT_10BASE2, | |
206 | IF_PORT_10BASET, | |
207 | IF_PORT_AUI, | |
208 | IF_PORT_100BASET, | |
209 | IF_PORT_100BASETX, | |
210 | IF_PORT_100BASEFX | |
211 | }; | |
212 | ||
213 | #ifdef __KERNEL__ | |
214 | ||
215 | #include <linux/cache.h> | |
216 | #include <linux/skbuff.h> | |
217 | ||
218 | struct neighbour; | |
219 | struct neigh_parms; | |
220 | struct sk_buff; | |
221 | ||
f001fde5 JP |
222 | struct netdev_hw_addr { |
223 | struct list_head list; | |
224 | unsigned char addr[MAX_ADDR_LEN]; | |
225 | unsigned char type; | |
ccffad25 JP |
226 | #define NETDEV_HW_ADDR_T_LAN 1 |
227 | #define NETDEV_HW_ADDR_T_SAN 2 | |
228 | #define NETDEV_HW_ADDR_T_SLAVE 3 | |
229 | #define NETDEV_HW_ADDR_T_UNICAST 4 | |
22bedad3 | 230 | #define NETDEV_HW_ADDR_T_MULTICAST 5 |
ccffad25 | 231 | bool synced; |
22bedad3 | 232 | bool global_use; |
8f8f103d | 233 | int refcount; |
f001fde5 JP |
234 | struct rcu_head rcu_head; |
235 | }; | |
236 | ||
31278e71 JP |
237 | struct netdev_hw_addr_list { |
238 | struct list_head list; | |
239 | int count; | |
240 | }; | |
241 | ||
22bedad3 JP |
242 | #define netdev_hw_addr_list_count(l) ((l)->count) |
243 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) | |
244 | #define netdev_hw_addr_list_for_each(ha, l) \ | |
245 | list_for_each_entry(ha, &(l)->list, list) | |
32e7bfc4 | 246 | |
22bedad3 JP |
247 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
248 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) | |
249 | #define netdev_for_each_uc_addr(ha, dev) \ | |
250 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) | |
6683ece3 | 251 | |
22bedad3 JP |
252 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
253 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) | |
18e225f2 | 254 | #define netdev_for_each_mc_addr(ha, dev) \ |
22bedad3 | 255 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
6683ece3 | 256 | |
d94d9fee | 257 | struct hh_cache { |
1da177e4 LT |
258 | struct hh_cache *hh_next; /* Next entry */ |
259 | atomic_t hh_refcnt; /* number of users */ | |
f0490980 ED |
260 | /* |
261 | * We want hh_output, hh_len, hh_lock and hh_data be a in a separate | |
262 | * cache line on SMP. | |
263 | * They are mostly read, but hh_refcnt may be changed quite frequently, | |
264 | * incurring cache line ping pongs. | |
265 | */ | |
266 | __be16 hh_type ____cacheline_aligned_in_smp; | |
267 | /* protocol identifier, f.e ETH_P_IP | |
1da177e4 LT |
268 | * NOTE: For VLANs, this will be the |
269 | * encapuslated type. --BLG | |
270 | */ | |
d5c42c0e | 271 | u16 hh_len; /* length of header */ |
1da177e4 | 272 | int (*hh_output)(struct sk_buff *skb); |
3644f0ce | 273 | seqlock_t hh_lock; |
1da177e4 LT |
274 | |
275 | /* cached hardware header; allow for machine alignment needs. */ | |
276 | #define HH_DATA_MOD 16 | |
277 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 278 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
279 | #define HH_DATA_ALIGN(__len) \ |
280 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
281 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
282 | }; | |
283 | ||
284 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. | |
285 | * Alternative is: | |
286 | * dev->hard_header_len ? (dev->hard_header_len + | |
287 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
288 | * | |
289 | * We could use other alignment values, but we must maintain the | |
290 | * relationship HH alignment <= LL alignment. | |
f5184d26 JB |
291 | * |
292 | * LL_ALLOCATED_SPACE also takes into account the tailroom the device | |
293 | * may need. | |
1da177e4 LT |
294 | */ |
295 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 296 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 297 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 JB |
298 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
299 | #define LL_ALLOCATED_SPACE(dev) \ | |
300 | ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
1da177e4 | 301 | |
3b04ddde SH |
302 | struct header_ops { |
303 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
304 | unsigned short type, const void *daddr, | |
305 | const void *saddr, unsigned len); | |
306 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); | |
307 | int (*rebuild)(struct sk_buff *skb); | |
308 | #define HAVE_HEADER_CACHE | |
309 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh); | |
310 | void (*cache_update)(struct hh_cache *hh, | |
311 | const struct net_device *dev, | |
312 | const unsigned char *haddr); | |
313 | }; | |
314 | ||
1da177e4 LT |
315 | /* These flag bits are private to the generic network queueing |
316 | * layer, they may not be explicitly referenced by any other | |
317 | * code. | |
318 | */ | |
319 | ||
d94d9fee | 320 | enum netdev_state_t { |
1da177e4 LT |
321 | __LINK_STATE_START, |
322 | __LINK_STATE_PRESENT, | |
1da177e4 | 323 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
324 | __LINK_STATE_LINKWATCH_PENDING, |
325 | __LINK_STATE_DORMANT, | |
1da177e4 LT |
326 | }; |
327 | ||
328 | ||
329 | /* | |
330 | * This structure holds at boot time configured netdevice settings. They | |
fe2918b0 | 331 | * are then used in the device probing. |
1da177e4 LT |
332 | */ |
333 | struct netdev_boot_setup { | |
334 | char name[IFNAMSIZ]; | |
335 | struct ifmap map; | |
336 | }; | |
337 | #define NETDEV_BOOT_SETUP_MAX 8 | |
338 | ||
20380731 | 339 | extern int __init netdev_boot_setup(char *str); |
1da177e4 | 340 | |
bea3348e SH |
341 | /* |
342 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
343 | */ | |
344 | struct napi_struct { | |
345 | /* The poll_list must only be managed by the entity which | |
346 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
347 | * whoever atomically sets that bit can add this napi_struct | |
348 | * to the per-cpu poll_list, and whoever clears that bit | |
349 | * can remove from the list right before clearing the bit. | |
350 | */ | |
351 | struct list_head poll_list; | |
352 | ||
353 | unsigned long state; | |
354 | int weight; | |
355 | int (*poll)(struct napi_struct *, int); | |
356 | #ifdef CONFIG_NETPOLL | |
357 | spinlock_t poll_lock; | |
358 | int poll_owner; | |
bea3348e | 359 | #endif |
4ae5544f HX |
360 | |
361 | unsigned int gro_count; | |
362 | ||
5d38a079 | 363 | struct net_device *dev; |
d565b0a1 HX |
364 | struct list_head dev_list; |
365 | struct sk_buff *gro_list; | |
5d38a079 | 366 | struct sk_buff *skb; |
bea3348e SH |
367 | }; |
368 | ||
d94d9fee | 369 | enum { |
bea3348e | 370 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
a0a46196 | 371 | NAPI_STATE_DISABLE, /* Disable pending */ |
7b363e44 | 372 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
bea3348e SH |
373 | }; |
374 | ||
5b252f0c | 375 | enum gro_result { |
d1c76af9 HX |
376 | GRO_MERGED, |
377 | GRO_MERGED_FREE, | |
378 | GRO_HELD, | |
379 | GRO_NORMAL, | |
380 | GRO_DROP, | |
381 | }; | |
5b252f0c | 382 | typedef enum gro_result gro_result_t; |
d1c76af9 | 383 | |
ab95bfe0 JP |
384 | typedef struct sk_buff *rx_handler_func_t(struct sk_buff *skb); |
385 | ||
b3c97528 | 386 | extern void __napi_schedule(struct napi_struct *n); |
bea3348e | 387 | |
a0a46196 DM |
388 | static inline int napi_disable_pending(struct napi_struct *n) |
389 | { | |
390 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
391 | } | |
392 | ||
bea3348e SH |
393 | /** |
394 | * napi_schedule_prep - check if napi can be scheduled | |
395 | * @n: napi context | |
396 | * | |
397 | * Test if NAPI routine is already running, and if not mark | |
398 | * it as running. This is used as a condition variable | |
a0a46196 DM |
399 | * insure only one NAPI poll instance runs. We also make |
400 | * sure there is no pending NAPI disable. | |
bea3348e SH |
401 | */ |
402 | static inline int napi_schedule_prep(struct napi_struct *n) | |
403 | { | |
a0a46196 DM |
404 | return !napi_disable_pending(n) && |
405 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); | |
bea3348e SH |
406 | } |
407 | ||
408 | /** | |
409 | * napi_schedule - schedule NAPI poll | |
410 | * @n: napi context | |
411 | * | |
412 | * Schedule NAPI poll routine to be called if it is not already | |
413 | * running. | |
414 | */ | |
415 | static inline void napi_schedule(struct napi_struct *n) | |
416 | { | |
417 | if (napi_schedule_prep(n)) | |
418 | __napi_schedule(n); | |
419 | } | |
420 | ||
bfe13f54 RD |
421 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
422 | static inline int napi_reschedule(struct napi_struct *napi) | |
423 | { | |
424 | if (napi_schedule_prep(napi)) { | |
425 | __napi_schedule(napi); | |
426 | return 1; | |
427 | } | |
428 | return 0; | |
429 | } | |
430 | ||
bea3348e SH |
431 | /** |
432 | * napi_complete - NAPI processing complete | |
433 | * @n: napi context | |
434 | * | |
435 | * Mark NAPI processing as complete. | |
436 | */ | |
d565b0a1 HX |
437 | extern void __napi_complete(struct napi_struct *n); |
438 | extern void napi_complete(struct napi_struct *n); | |
bea3348e SH |
439 | |
440 | /** | |
441 | * napi_disable - prevent NAPI from scheduling | |
442 | * @n: napi context | |
443 | * | |
444 | * Stop NAPI from being scheduled on this context. | |
445 | * Waits till any outstanding processing completes. | |
446 | */ | |
447 | static inline void napi_disable(struct napi_struct *n) | |
448 | { | |
a0a46196 | 449 | set_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e | 450 | while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) |
43cc7380 | 451 | msleep(1); |
a0a46196 | 452 | clear_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e SH |
453 | } |
454 | ||
455 | /** | |
456 | * napi_enable - enable NAPI scheduling | |
457 | * @n: napi context | |
458 | * | |
459 | * Resume NAPI from being scheduled on this context. | |
460 | * Must be paired with napi_disable. | |
461 | */ | |
462 | static inline void napi_enable(struct napi_struct *n) | |
463 | { | |
464 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
465 | smp_mb__before_clear_bit(); | |
466 | clear_bit(NAPI_STATE_SCHED, &n->state); | |
467 | } | |
468 | ||
c264c3de SH |
469 | #ifdef CONFIG_SMP |
470 | /** | |
471 | * napi_synchronize - wait until NAPI is not running | |
472 | * @n: napi context | |
473 | * | |
474 | * Wait until NAPI is done being scheduled on this context. | |
475 | * Waits till any outstanding processing completes but | |
476 | * does not disable future activations. | |
477 | */ | |
478 | static inline void napi_synchronize(const struct napi_struct *n) | |
479 | { | |
480 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
481 | msleep(1); | |
482 | } | |
483 | #else | |
484 | # define napi_synchronize(n) barrier() | |
485 | #endif | |
486 | ||
d94d9fee | 487 | enum netdev_queue_state_t { |
79d16385 | 488 | __QUEUE_STATE_XOFF, |
c3f26a26 | 489 | __QUEUE_STATE_FROZEN, |
79d16385 DM |
490 | }; |
491 | ||
bb949fbd | 492 | struct netdev_queue { |
6a321cb3 ED |
493 | /* |
494 | * read mostly part | |
495 | */ | |
bb949fbd | 496 | struct net_device *dev; |
b0e1e646 | 497 | struct Qdisc *qdisc; |
79d16385 | 498 | unsigned long state; |
b0e1e646 | 499 | struct Qdisc *qdisc_sleeping; |
6a321cb3 ED |
500 | /* |
501 | * write mostly part | |
502 | */ | |
503 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
504 | int xmit_lock_owner; | |
9d21493b ED |
505 | /* |
506 | * please use this field instead of dev->trans_start | |
507 | */ | |
508 | unsigned long trans_start; | |
bd27290a ED |
509 | u64 tx_bytes; |
510 | u64 tx_packets; | |
511 | u64 tx_dropped; | |
e8a0464c | 512 | } ____cacheline_aligned_in_smp; |
bb949fbd | 513 | |
df334545 | 514 | #ifdef CONFIG_RPS |
0a9627f2 TH |
515 | /* |
516 | * This structure holds an RPS map which can be of variable length. The | |
517 | * map is an array of CPUs. | |
518 | */ | |
519 | struct rps_map { | |
520 | unsigned int len; | |
521 | struct rcu_head rcu; | |
522 | u16 cpus[0]; | |
523 | }; | |
524 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16))) | |
525 | ||
fec5e652 TH |
526 | /* |
527 | * The rps_dev_flow structure contains the mapping of a flow to a CPU and the | |
528 | * tail pointer for that CPU's input queue at the time of last enqueue. | |
529 | */ | |
530 | struct rps_dev_flow { | |
531 | u16 cpu; | |
532 | u16 fill; | |
533 | unsigned int last_qtail; | |
534 | }; | |
535 | ||
536 | /* | |
537 | * The rps_dev_flow_table structure contains a table of flow mappings. | |
538 | */ | |
539 | struct rps_dev_flow_table { | |
540 | unsigned int mask; | |
541 | struct rcu_head rcu; | |
542 | struct work_struct free_work; | |
543 | struct rps_dev_flow flows[0]; | |
544 | }; | |
545 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ | |
546 | (_num * sizeof(struct rps_dev_flow))) | |
547 | ||
548 | /* | |
549 | * The rps_sock_flow_table contains mappings of flows to the last CPU | |
550 | * on which they were processed by the application (set in recvmsg). | |
551 | */ | |
552 | struct rps_sock_flow_table { | |
553 | unsigned int mask; | |
554 | u16 ents[0]; | |
555 | }; | |
556 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_sock_flow_table) + \ | |
557 | (_num * sizeof(u16))) | |
558 | ||
559 | #define RPS_NO_CPU 0xffff | |
560 | ||
561 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, | |
562 | u32 hash) | |
563 | { | |
564 | if (table && hash) { | |
565 | unsigned int cpu, index = hash & table->mask; | |
566 | ||
567 | /* We only give a hint, preemption can change cpu under us */ | |
568 | cpu = raw_smp_processor_id(); | |
569 | ||
570 | if (table->ents[index] != cpu) | |
571 | table->ents[index] = cpu; | |
572 | } | |
573 | } | |
574 | ||
575 | static inline void rps_reset_sock_flow(struct rps_sock_flow_table *table, | |
576 | u32 hash) | |
577 | { | |
578 | if (table && hash) | |
579 | table->ents[hash & table->mask] = RPS_NO_CPU; | |
580 | } | |
581 | ||
582 | extern struct rps_sock_flow_table *rps_sock_flow_table; | |
583 | ||
0a9627f2 TH |
584 | /* This structure contains an instance of an RX queue. */ |
585 | struct netdev_rx_queue { | |
586 | struct rps_map *rps_map; | |
fec5e652 | 587 | struct rps_dev_flow_table *rps_flow_table; |
0a9627f2 TH |
588 | struct kobject kobj; |
589 | struct netdev_rx_queue *first; | |
590 | atomic_t count; | |
591 | } ____cacheline_aligned_in_smp; | |
fec5e652 | 592 | #endif /* CONFIG_RPS */ |
d314774c SH |
593 | |
594 | /* | |
595 | * This structure defines the management hooks for network devices. | |
00829823 SH |
596 | * The following hooks can be defined; unless noted otherwise, they are |
597 | * optional and can be filled with a null pointer. | |
d314774c SH |
598 | * |
599 | * int (*ndo_init)(struct net_device *dev); | |
600 | * This function is called once when network device is registered. | |
601 | * The network device can use this to any late stage initializaton | |
602 | * or semantic validattion. It can fail with an error code which will | |
603 | * be propogated back to register_netdev | |
604 | * | |
605 | * void (*ndo_uninit)(struct net_device *dev); | |
606 | * This function is called when device is unregistered or when registration | |
607 | * fails. It is not called if init fails. | |
608 | * | |
609 | * int (*ndo_open)(struct net_device *dev); | |
610 | * This function is called when network device transistions to the up | |
611 | * state. | |
612 | * | |
613 | * int (*ndo_stop)(struct net_device *dev); | |
614 | * This function is called when network device transistions to the down | |
615 | * state. | |
616 | * | |
dc1f8bf6 SH |
617 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
618 | * struct net_device *dev); | |
00829823 | 619 | * Called when a packet needs to be transmitted. |
dc1f8bf6 SH |
620 | * Must return NETDEV_TX_OK , NETDEV_TX_BUSY. |
621 | * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX) | |
00829823 SH |
622 | * Required can not be NULL. |
623 | * | |
624 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb); | |
625 | * Called to decide which queue to when device supports multiple | |
626 | * transmit queues. | |
627 | * | |
d314774c SH |
628 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
629 | * This function is called to allow device receiver to make | |
630 | * changes to configuration when multicast or promiscious is enabled. | |
631 | * | |
632 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
633 | * This function is called device changes address list filtering. | |
634 | * | |
635 | * void (*ndo_set_multicast_list)(struct net_device *dev); | |
636 | * This function is called when the multicast address list changes. | |
637 | * | |
638 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
639 | * This function is called when the Media Access Control address | |
37b607c5 | 640 | * needs to be changed. If this interface is not defined, the |
d314774c SH |
641 | * mac address can not be changed. |
642 | * | |
643 | * int (*ndo_validate_addr)(struct net_device *dev); | |
644 | * Test if Media Access Control address is valid for the device. | |
645 | * | |
646 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
647 | * Called when a user request an ioctl which can't be handled by | |
648 | * the generic interface code. If not defined ioctl's return | |
649 | * not supported error code. | |
650 | * | |
651 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); | |
652 | * Used to set network devices bus interface parameters. This interface | |
653 | * is retained for legacy reason, new devices should use the bus | |
654 | * interface (PCI) for low level management. | |
655 | * | |
656 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
657 | * Called when a user wants to change the Maximum Transfer Unit | |
658 | * of a device. If not defined, any request to change MTU will | |
659 | * will return an error. | |
660 | * | |
00829823 | 661 | * void (*ndo_tx_timeout)(struct net_device *dev); |
d314774c SH |
662 | * Callback uses when the transmitter has not made any progress |
663 | * for dev->watchdog ticks. | |
664 | * | |
3cfde79c | 665 | * struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
28172739 | 666 | * struct rtnl_link_stats64 *storage); |
d308e38f | 667 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
d314774c | 668 | * Called when a user wants to get the network device usage |
be1f3c2c | 669 | * statistics. Drivers must do one of the following: |
3cfde79c BH |
670 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
671 | * rtnl_link_stats64 structure passed by the caller. | |
82695d9b | 672 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
be1f3c2c BH |
673 | * (which should normally be dev->stats) and return a pointer to |
674 | * it. The structure may be changed asynchronously only if each | |
675 | * field is written atomically. | |
676 | * 3. Update dev->stats asynchronously and atomically, and define | |
677 | * neither operation. | |
d314774c SH |
678 | * |
679 | * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp); | |
680 | * If device support VLAN receive accleration | |
681 | * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called | |
682 | * when vlan groups for the device changes. Note: grp is NULL | |
683 | * if no vlan's groups are being used. | |
684 | * | |
685 | * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid); | |
686 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
687 | * this function is called when a VLAN id is registered. | |
688 | * | |
689 | * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid); | |
690 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
691 | * this function is called when a VLAN id is unregistered. | |
692 | * | |
693 | * void (*ndo_poll_controller)(struct net_device *dev); | |
95c26df8 WM |
694 | * |
695 | * SR-IOV management functions. | |
696 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); | |
697 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos); | |
698 | * int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate); | |
699 | * int (*ndo_get_vf_config)(struct net_device *dev, | |
700 | * int vf, struct ifla_vf_info *ivf); | |
57b61080 SF |
701 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
702 | * struct nlattr *port[]); | |
703 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); | |
d314774c | 704 | */ |
47fd5b83 | 705 | #define HAVE_NET_DEVICE_OPS |
d314774c SH |
706 | struct net_device_ops { |
707 | int (*ndo_init)(struct net_device *dev); | |
708 | void (*ndo_uninit)(struct net_device *dev); | |
709 | int (*ndo_open)(struct net_device *dev); | |
710 | int (*ndo_stop)(struct net_device *dev); | |
dc1f8bf6 | 711 | netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb, |
00829823 SH |
712 | struct net_device *dev); |
713 | u16 (*ndo_select_queue)(struct net_device *dev, | |
714 | struct sk_buff *skb); | |
d314774c SH |
715 | void (*ndo_change_rx_flags)(struct net_device *dev, |
716 | int flags); | |
d314774c | 717 | void (*ndo_set_rx_mode)(struct net_device *dev); |
d314774c | 718 | void (*ndo_set_multicast_list)(struct net_device *dev); |
d314774c SH |
719 | int (*ndo_set_mac_address)(struct net_device *dev, |
720 | void *addr); | |
d314774c | 721 | int (*ndo_validate_addr)(struct net_device *dev); |
d314774c SH |
722 | int (*ndo_do_ioctl)(struct net_device *dev, |
723 | struct ifreq *ifr, int cmd); | |
d314774c SH |
724 | int (*ndo_set_config)(struct net_device *dev, |
725 | struct ifmap *map); | |
00829823 SH |
726 | int (*ndo_change_mtu)(struct net_device *dev, |
727 | int new_mtu); | |
728 | int (*ndo_neigh_setup)(struct net_device *dev, | |
729 | struct neigh_parms *); | |
d314774c SH |
730 | void (*ndo_tx_timeout) (struct net_device *dev); |
731 | ||
28172739 ED |
732 | struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
733 | struct rtnl_link_stats64 *storage); | |
d314774c SH |
734 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
735 | ||
736 | void (*ndo_vlan_rx_register)(struct net_device *dev, | |
737 | struct vlan_group *grp); | |
738 | void (*ndo_vlan_rx_add_vid)(struct net_device *dev, | |
739 | unsigned short vid); | |
740 | void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, | |
741 | unsigned short vid); | |
742 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
d314774c | 743 | void (*ndo_poll_controller)(struct net_device *dev); |
4247e161 HX |
744 | int (*ndo_netpoll_setup)(struct net_device *dev, |
745 | struct netpoll_info *info); | |
0e34e931 | 746 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
d314774c | 747 | #endif |
95c26df8 WM |
748 | int (*ndo_set_vf_mac)(struct net_device *dev, |
749 | int queue, u8 *mac); | |
750 | int (*ndo_set_vf_vlan)(struct net_device *dev, | |
751 | int queue, u16 vlan, u8 qos); | |
752 | int (*ndo_set_vf_tx_rate)(struct net_device *dev, | |
753 | int vf, int rate); | |
754 | int (*ndo_get_vf_config)(struct net_device *dev, | |
755 | int vf, | |
756 | struct ifla_vf_info *ivf); | |
57b61080 SF |
757 | int (*ndo_set_vf_port)(struct net_device *dev, |
758 | int vf, | |
759 | struct nlattr *port[]); | |
760 | int (*ndo_get_vf_port)(struct net_device *dev, | |
761 | int vf, struct sk_buff *skb); | |
4d288d57 | 762 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
cb454399 YZ |
763 | int (*ndo_fcoe_enable)(struct net_device *dev); |
764 | int (*ndo_fcoe_disable)(struct net_device *dev); | |
4d288d57 YZ |
765 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
766 | u16 xid, | |
767 | struct scatterlist *sgl, | |
768 | unsigned int sgc); | |
769 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
770 | u16 xid); | |
df5c7945 YZ |
771 | #define NETDEV_FCOE_WWNN 0 |
772 | #define NETDEV_FCOE_WWPN 1 | |
773 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, | |
774 | u64 *wwn, int type); | |
4d288d57 | 775 | #endif |
d314774c SH |
776 | }; |
777 | ||
1da177e4 LT |
778 | /* |
779 | * The DEVICE structure. | |
780 | * Actually, this whole structure is a big mistake. It mixes I/O | |
781 | * data with strictly "high-level" data, and it has to know about | |
782 | * almost every data structure used in the INET module. | |
783 | * | |
784 | * FIXME: cleanup struct net_device such that network protocol info | |
785 | * moves out. | |
786 | */ | |
787 | ||
d94d9fee | 788 | struct net_device { |
1da177e4 LT |
789 | |
790 | /* | |
791 | * This is the first field of the "visible" part of this structure | |
792 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
724df615 | 793 | * of the interface. |
1da177e4 LT |
794 | */ |
795 | char name[IFNAMSIZ]; | |
ed77134b | 796 | |
82f68251 | 797 | struct pm_qos_request_list pm_qos_req; |
ed77134b | 798 | |
9356b8fc ED |
799 | /* device name hash chain */ |
800 | struct hlist_node name_hlist; | |
0b815a1a SH |
801 | /* snmp alias */ |
802 | char *ifalias; | |
1da177e4 LT |
803 | |
804 | /* | |
805 | * I/O specific fields | |
806 | * FIXME: Merge these and struct ifmap into one | |
807 | */ | |
808 | unsigned long mem_end; /* shared mem end */ | |
809 | unsigned long mem_start; /* shared mem start */ | |
810 | unsigned long base_addr; /* device I/O address */ | |
811 | unsigned int irq; /* device IRQ number */ | |
812 | ||
813 | /* | |
814 | * Some hardware also needs these fields, but they are not | |
815 | * part of the usual set specified in Space.c. | |
816 | */ | |
817 | ||
818 | unsigned char if_port; /* Selectable AUI, TP,..*/ | |
819 | unsigned char dma; /* DMA channel */ | |
820 | ||
821 | unsigned long state; | |
822 | ||
7562f876 | 823 | struct list_head dev_list; |
bea3348e | 824 | struct list_head napi_list; |
44a0873d | 825 | struct list_head unreg_list; |
1da177e4 | 826 | |
9356b8fc ED |
827 | /* Net device features */ |
828 | unsigned long features; | |
829 | #define NETIF_F_SG 1 /* Scatter/gather IO. */ | |
d212f87b | 830 | #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ |
9356b8fc ED |
831 | #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ |
832 | #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ | |
d212f87b | 833 | #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ |
9356b8fc ED |
834 | #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ |
835 | #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ | |
836 | #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ | |
837 | #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ | |
838 | #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ | |
839 | #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ | |
37c3185a | 840 | #define NETIF_F_GSO 2048 /* Enable software GSO. */ |
e24eb521 CB |
841 | #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ |
842 | /* do not use LLTX in new drivers */ | |
ce286d32 | 843 | #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ |
d565b0a1 | 844 | #define NETIF_F_GRO 16384 /* Generic receive offload */ |
3ae7c0b2 | 845 | #define NETIF_F_LRO 32768 /* large receive offload */ |
7967168c | 846 | |
8dc92f7e | 847 | /* the GSO_MASK reserves bits 16 through 23 */ |
01d5b2fc | 848 | #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */ |
8dc92f7e | 849 | #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */ |
bb2af4f5 | 850 | #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/ |
15682bc4 | 851 | #define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */ |
b00fabb4 | 852 | #define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */ |
01d5b2fc | 853 | |
7967168c | 854 | /* Segmentation offload features */ |
289c79a4 | 855 | #define NETIF_F_GSO_SHIFT 16 |
43eb99c5 | 856 | #define NETIF_F_GSO_MASK 0x00ff0000 |
7967168c | 857 | #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) |
f83ef8c0 | 858 | #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) |
576a30eb | 859 | #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) |
f83ef8c0 HX |
860 | #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) |
861 | #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) | |
01d5b2fc | 862 | #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT) |
9356b8fc | 863 | |
78eb8877 | 864 | /* List of features with software fallbacks. */ |
d29c0c5c HX |
865 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \ |
866 | NETIF_F_TSO6 | NETIF_F_UFO) | |
78eb8877 | 867 | |
d212f87b | 868 | |
8648b305 | 869 | #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) |
d212f87b SH |
870 | #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) |
871 | #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) | |
872 | #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) | |
8648b305 | 873 | |
b63365a2 HX |
874 | /* |
875 | * If one device supports one of these features, then enable them | |
876 | * for all in netdev_increment_features. | |
877 | */ | |
878 | #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ | |
d314774c | 879 | NETIF_F_SG | NETIF_F_HIGHDMA | \ |
b63365a2 HX |
880 | NETIF_F_FRAGLIST) |
881 | ||
1da177e4 LT |
882 | /* Interface index. Unique device identifier */ |
883 | int ifindex; | |
884 | int iflink; | |
885 | ||
c45d286e | 886 | struct net_device_stats stats; |
1da177e4 | 887 | |
b86e0280 | 888 | #ifdef CONFIG_WIRELESS_EXT |
1da177e4 LT |
889 | /* List of functions to handle Wireless Extensions (instead of ioctl). |
890 | * See <net/iw_handler.h> for details. Jean II */ | |
891 | const struct iw_handler_def * wireless_handlers; | |
892 | /* Instance data managed by the core of Wireless Extensions. */ | |
893 | struct iw_public_data * wireless_data; | |
b86e0280 | 894 | #endif |
d314774c SH |
895 | /* Management operations */ |
896 | const struct net_device_ops *netdev_ops; | |
76fd8593 | 897 | const struct ethtool_ops *ethtool_ops; |
1da177e4 | 898 | |
3b04ddde SH |
899 | /* Hardware header description */ |
900 | const struct header_ops *header_ops; | |
901 | ||
b00055aa | 902 | unsigned int flags; /* interface flags (a la BSD) */ |
1da177e4 | 903 | unsigned short gflags; |
1726442e | 904 | unsigned int priv_flags; /* Like 'flags' but invisible to userspace. */ |
1da177e4 LT |
905 | unsigned short padded; /* How much padding added by alloc_netdev() */ |
906 | ||
b00055aa SR |
907 | unsigned char operstate; /* RFC2863 operstate */ |
908 | unsigned char link_mode; /* mapping policy to operstate */ | |
909 | ||
cd7b5396 | 910 | unsigned int mtu; /* interface MTU value */ |
1da177e4 LT |
911 | unsigned short type; /* interface hardware type */ |
912 | unsigned short hard_header_len; /* hardware hdr length */ | |
1da177e4 | 913 | |
f5184d26 JB |
914 | /* extra head- and tailroom the hardware may need, but not in all cases |
915 | * can this be guaranteed, especially tailroom. Some cases also use | |
916 | * LL_MAX_HEADER instead to allocate the skb. | |
917 | */ | |
918 | unsigned short needed_headroom; | |
919 | unsigned short needed_tailroom; | |
920 | ||
1da177e4 | 921 | /* Interface address info. */ |
a6f9a705 | 922 | unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ |
c1f79426 | 923 | unsigned char addr_assign_type; /* hw address assignment type */ |
1da177e4 LT |
924 | unsigned char addr_len; /* hardware address length */ |
925 | unsigned short dev_id; /* for shared network cards */ | |
926 | ||
ccffad25 | 927 | spinlock_t addr_list_lock; |
22bedad3 JP |
928 | struct netdev_hw_addr_list uc; /* Unicast mac addresses */ |
929 | struct netdev_hw_addr_list mc; /* Multicast mac addresses */ | |
930 | int uc_promisc; | |
9d45abe1 WC |
931 | unsigned int promiscuity; |
932 | unsigned int allmulti; | |
1da177e4 | 933 | |
1da177e4 LT |
934 | |
935 | /* Protocol specific pointers */ | |
936 | ||
91da11f8 LB |
937 | #ifdef CONFIG_NET_DSA |
938 | void *dsa_ptr; /* dsa specific data */ | |
939 | #endif | |
1da177e4 | 940 | void *atalk_ptr; /* AppleTalk link */ |
95ae6b22 | 941 | struct in_device __rcu *ip_ptr; /* IPv4 specific data */ |
1da177e4 LT |
942 | void *dn_ptr; /* DECnet specific data */ |
943 | void *ip6_ptr; /* IPv6 specific data */ | |
944 | void *ec_ptr; /* Econet specific data */ | |
945 | void *ax25_ptr; /* AX.25 specific data */ | |
704232c2 JB |
946 | struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, |
947 | assign before registering */ | |
1da177e4 | 948 | |
9356b8fc | 949 | /* |
cd13539b | 950 | * Cache lines mostly used on receive path (including eth_type_trans()) |
9356b8fc | 951 | */ |
4dc89133 ED |
952 | unsigned long last_rx; /* Time of last Rx |
953 | * This should not be set in | |
954 | * drivers, unless really needed, | |
955 | * because network stack (bonding) | |
956 | * use it if/when necessary, to | |
957 | * avoid dirtying this cache line. | |
958 | */ | |
959 | ||
cd13539b ED |
960 | struct net_device *master; /* Pointer to master device of a group, |
961 | * which this device is member of. | |
962 | */ | |
963 | ||
9356b8fc | 964 | /* Interface address info used in eth_type_trans() */ |
f001fde5 JP |
965 | unsigned char *dev_addr; /* hw address, (before bcast |
966 | because most packets are | |
967 | unicast) */ | |
968 | ||
31278e71 JP |
969 | struct netdev_hw_addr_list dev_addrs; /* list of device |
970 | hw addresses */ | |
9356b8fc ED |
971 | |
972 | unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ | |
1da177e4 | 973 | |
df334545 | 974 | #ifdef CONFIG_RPS |
0a9627f2 TH |
975 | struct kset *queues_kset; |
976 | ||
977 | struct netdev_rx_queue *_rx; | |
978 | ||
62fe0b40 | 979 | /* Number of RX queues allocated at register_netdev() time */ |
0a9627f2 | 980 | unsigned int num_rx_queues; |
62fe0b40 BH |
981 | |
982 | /* Number of RX queues currently active in device */ | |
983 | unsigned int real_num_rx_queues; | |
df334545 | 984 | #endif |
0a9627f2 | 985 | |
ab95bfe0 | 986 | rx_handler_func_t *rx_handler; |
93e2c32b | 987 | void *rx_handler_data; |
e8a0464c | 988 | |
cd13539b ED |
989 | struct netdev_queue rx_queue; /* use two cache lines */ |
990 | ||
991 | /* | |
992 | * Cache lines mostly used on transmit path | |
993 | */ | |
e8a0464c | 994 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
fd2ea0a7 DM |
995 | |
996 | /* Number of TX queues allocated at alloc_netdev_mq() time */ | |
e8a0464c | 997 | unsigned int num_tx_queues; |
fd2ea0a7 DM |
998 | |
999 | /* Number of TX queues currently active in device */ | |
1000 | unsigned int real_num_tx_queues; | |
1001 | ||
af356afa PM |
1002 | /* root qdisc from userspace point of view */ |
1003 | struct Qdisc *qdisc; | |
1004 | ||
1da177e4 | 1005 | unsigned long tx_queue_len; /* Max frames per queue allowed */ |
c3f26a26 | 1006 | spinlock_t tx_global_lock; |
cd13539b | 1007 | |
9356b8fc | 1008 | /* These may be needed for future network-power-down code. */ |
9d21493b ED |
1009 | |
1010 | /* | |
1011 | * trans_start here is expensive for high speed devices on SMP, | |
1012 | * please use netdev_queue->trans_start instead. | |
1013 | */ | |
9356b8fc ED |
1014 | unsigned long trans_start; /* Time (in jiffies) of last Tx */ |
1015 | ||
1016 | int watchdog_timeo; /* used by dev_watchdog() */ | |
1017 | struct timer_list watchdog_timer; | |
1018 | ||
1da177e4 | 1019 | /* Number of references to this device */ |
9356b8fc ED |
1020 | atomic_t refcnt ____cacheline_aligned_in_smp; |
1021 | ||
1da177e4 LT |
1022 | /* delayed register/unregister */ |
1023 | struct list_head todo_list; | |
1da177e4 LT |
1024 | /* device index hash chain */ |
1025 | struct hlist_node index_hlist; | |
1026 | ||
e014debe | 1027 | struct list_head link_watch_list; |
572a103d | 1028 | |
1da177e4 LT |
1029 | /* register/unregister state machine */ |
1030 | enum { NETREG_UNINITIALIZED=0, | |
b17a7c17 | 1031 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
1032 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
1033 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
1034 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 1035 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
a2835763 PM |
1036 | } reg_state:16; |
1037 | ||
1038 | enum { | |
1039 | RTNL_LINK_INITIALIZED, | |
1040 | RTNL_LINK_INITIALIZING, | |
1041 | } rtnl_link_state:16; | |
1da177e4 | 1042 | |
d314774c SH |
1043 | /* Called from unregister, can be used to call free_netdev */ |
1044 | void (*destructor)(struct net_device *dev); | |
1da177e4 | 1045 | |
1da177e4 | 1046 | #ifdef CONFIG_NETPOLL |
115c1d6e | 1047 | struct netpoll_info *npinfo; |
1da177e4 | 1048 | #endif |
eae792b7 | 1049 | |
c346dca1 | 1050 | #ifdef CONFIG_NET_NS |
4a1c5371 EB |
1051 | /* Network namespace this network device is inside */ |
1052 | struct net *nd_net; | |
c346dca1 | 1053 | #endif |
4a1c5371 | 1054 | |
4951704b | 1055 | /* mid-layer private */ |
a7855c78 ED |
1056 | union { |
1057 | void *ml_priv; | |
1058 | struct pcpu_lstats __percpu *lstats; /* loopback stats */ | |
290b895e | 1059 | struct pcpu_tstats __percpu *tstats; /* tunnel stats */ |
a7855c78 | 1060 | }; |
eca9ebac PM |
1061 | /* GARP */ |
1062 | struct garp_port *garp_port; | |
1da177e4 | 1063 | |
1da177e4 | 1064 | /* class/net/name entry */ |
43cb76d9 | 1065 | struct device dev; |
0c509a6c EB |
1066 | /* space for optional device, statistics, and wireless sysfs groups */ |
1067 | const struct attribute_group *sysfs_groups[4]; | |
38f7b870 PM |
1068 | |
1069 | /* rtnetlink link ops */ | |
1070 | const struct rtnl_link_ops *rtnl_link_ops; | |
f25f4e44 | 1071 | |
289c79a4 PM |
1072 | /* VLAN feature mask */ |
1073 | unsigned long vlan_features; | |
1074 | ||
82cc1a7a PWJ |
1075 | /* for setting kernel sock attribute on TCP connection setup */ |
1076 | #define GSO_MAX_SIZE 65536 | |
1077 | unsigned int gso_max_size; | |
d314774c | 1078 | |
7a6b6f51 | 1079 | #ifdef CONFIG_DCB |
2f90b865 | 1080 | /* Data Center Bridging netlink ops */ |
32953543 | 1081 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
2f90b865 AD |
1082 | #endif |
1083 | ||
4d288d57 YZ |
1084 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
1085 | /* max exchange id for FCoE LRO by ddp */ | |
1086 | unsigned int fcoe_ddp_xid; | |
1087 | #endif | |
15682bc4 PWJ |
1088 | /* n-tuple filter list attached to this device */ |
1089 | struct ethtool_rx_ntuple_list ethtool_ntuple_list; | |
c1f19b51 RC |
1090 | |
1091 | /* phy device may attach itself for hardware timestamping */ | |
1092 | struct phy_device *phydev; | |
1da177e4 | 1093 | }; |
43cb76d9 | 1094 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 LT |
1095 | |
1096 | #define NETDEV_ALIGN 32 | |
1da177e4 | 1097 | |
e8a0464c DM |
1098 | static inline |
1099 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
1100 | unsigned int index) | |
1101 | { | |
1102 | return &dev->_tx[index]; | |
1103 | } | |
1104 | ||
1105 | static inline void netdev_for_each_tx_queue(struct net_device *dev, | |
1106 | void (*f)(struct net_device *, | |
1107 | struct netdev_queue *, | |
1108 | void *), | |
1109 | void *arg) | |
1110 | { | |
1111 | unsigned int i; | |
1112 | ||
1113 | for (i = 0; i < dev->num_tx_queues; i++) | |
1114 | f(dev, &dev->_tx[i], arg); | |
1115 | } | |
1116 | ||
c346dca1 YH |
1117 | /* |
1118 | * Net namespace inlines | |
1119 | */ | |
1120 | static inline | |
1121 | struct net *dev_net(const struct net_device *dev) | |
1122 | { | |
c2d9ba9b | 1123 | return read_pnet(&dev->nd_net); |
c346dca1 YH |
1124 | } |
1125 | ||
1126 | static inline | |
f5aa23fd | 1127 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 YH |
1128 | { |
1129 | #ifdef CONFIG_NET_NS | |
f3005d7f DL |
1130 | release_net(dev->nd_net); |
1131 | dev->nd_net = hold_net(net); | |
c346dca1 YH |
1132 | #endif |
1133 | } | |
1134 | ||
cf85d08f LB |
1135 | static inline bool netdev_uses_dsa_tags(struct net_device *dev) |
1136 | { | |
1137 | #ifdef CONFIG_NET_DSA_TAG_DSA | |
1138 | if (dev->dsa_ptr != NULL) | |
1139 | return dsa_uses_dsa_tags(dev->dsa_ptr); | |
1140 | #endif | |
1141 | ||
1142 | return 0; | |
1143 | } | |
1144 | ||
8a83a00b AB |
1145 | #ifndef CONFIG_NET_NS |
1146 | static inline void skb_set_dev(struct sk_buff *skb, struct net_device *dev) | |
1147 | { | |
1148 | skb->dev = dev; | |
1149 | } | |
1150 | #else /* CONFIG_NET_NS */ | |
1151 | void skb_set_dev(struct sk_buff *skb, struct net_device *dev); | |
1152 | #endif | |
1153 | ||
396138f0 LB |
1154 | static inline bool netdev_uses_trailer_tags(struct net_device *dev) |
1155 | { | |
1156 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
1157 | if (dev->dsa_ptr != NULL) | |
1158 | return dsa_uses_trailer_tags(dev->dsa_ptr); | |
1159 | #endif | |
1160 | ||
1161 | return 0; | |
1162 | } | |
1163 | ||
bea3348e SH |
1164 | /** |
1165 | * netdev_priv - access network device private data | |
1166 | * @dev: network device | |
1167 | * | |
1168 | * Get network device private data | |
1169 | */ | |
6472ce60 | 1170 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 1171 | { |
1ce8e7b5 | 1172 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
1da177e4 LT |
1173 | } |
1174 | ||
1da177e4 LT |
1175 | /* Set the sysfs physical device reference for the network logical device |
1176 | * if set prior to registration will cause a symlink during initialization. | |
1177 | */ | |
43cb76d9 | 1178 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 1179 | |
384912ed MH |
1180 | /* Set the sysfs device type for the network logical device to allow |
1181 | * fin grained indentification of different network device types. For | |
1182 | * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc. | |
1183 | */ | |
1184 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) | |
1185 | ||
3b582cc1 SH |
1186 | /** |
1187 | * netif_napi_add - initialize a napi context | |
1188 | * @dev: network device | |
1189 | * @napi: napi context | |
1190 | * @poll: polling function | |
1191 | * @weight: default weight | |
1192 | * | |
1193 | * netif_napi_add() must be used to initialize a napi context prior to calling | |
1194 | * *any* of the other napi related functions. | |
1195 | */ | |
d565b0a1 HX |
1196 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
1197 | int (*poll)(struct napi_struct *, int), int weight); | |
bea3348e | 1198 | |
d8156534 AD |
1199 | /** |
1200 | * netif_napi_del - remove a napi context | |
1201 | * @napi: napi context | |
1202 | * | |
1203 | * netif_napi_del() removes a napi context from the network device napi list | |
1204 | */ | |
d565b0a1 HX |
1205 | void netif_napi_del(struct napi_struct *napi); |
1206 | ||
1207 | struct napi_gro_cb { | |
78a478d0 HX |
1208 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
1209 | void *frag0; | |
1210 | ||
7489594c HX |
1211 | /* Length of frag0. */ |
1212 | unsigned int frag0_len; | |
1213 | ||
86911732 HX |
1214 | /* This indicates where we are processing relative to skb->data. */ |
1215 | int data_offset; | |
1216 | ||
d565b0a1 HX |
1217 | /* This is non-zero if the packet may be of the same flow. */ |
1218 | int same_flow; | |
1219 | ||
1220 | /* This is non-zero if the packet cannot be merged with the new skb. */ | |
1221 | int flush; | |
1222 | ||
1223 | /* Number of segments aggregated. */ | |
1224 | int count; | |
5d38a079 HX |
1225 | |
1226 | /* Free the skb? */ | |
1227 | int free; | |
d565b0a1 HX |
1228 | }; |
1229 | ||
1230 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) | |
d8156534 | 1231 | |
1da177e4 | 1232 | struct packet_type { |
f2ccd8fa DM |
1233 | __be16 type; /* This is really htons(ether_type). */ |
1234 | struct net_device *dev; /* NULL is wildcarded here */ | |
1235 | int (*func) (struct sk_buff *, | |
1236 | struct net_device *, | |
1237 | struct packet_type *, | |
1238 | struct net_device *); | |
576a30eb HX |
1239 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
1240 | int features); | |
a430a43d | 1241 | int (*gso_send_check)(struct sk_buff *skb); |
d565b0a1 HX |
1242 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
1243 | struct sk_buff *skb); | |
1244 | int (*gro_complete)(struct sk_buff *skb); | |
1da177e4 LT |
1245 | void *af_packet_priv; |
1246 | struct list_head list; | |
1247 | }; | |
1248 | ||
1249 | #include <linux/interrupt.h> | |
1250 | #include <linux/notifier.h> | |
1251 | ||
1da177e4 LT |
1252 | extern rwlock_t dev_base_lock; /* Device list lock */ |
1253 | ||
7562f876 | 1254 | |
881d966b EB |
1255 | #define for_each_netdev(net, d) \ |
1256 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
dcbccbd4 EB |
1257 | #define for_each_netdev_reverse(net, d) \ |
1258 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) | |
c6d14c84 ED |
1259 | #define for_each_netdev_rcu(net, d) \ |
1260 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b EB |
1261 | #define for_each_netdev_safe(net, d, n) \ |
1262 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
1263 | #define for_each_netdev_continue(net, d) \ | |
1264 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
254245d2 | 1265 | #define for_each_netdev_continue_rcu(net, d) \ |
1266 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b | 1267 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
7562f876 | 1268 | |
a050c33f DL |
1269 | static inline struct net_device *next_net_device(struct net_device *dev) |
1270 | { | |
1271 | struct list_head *lh; | |
1272 | struct net *net; | |
1273 | ||
c346dca1 | 1274 | net = dev_net(dev); |
a050c33f DL |
1275 | lh = dev->dev_list.next; |
1276 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
1277 | } | |
1278 | ||
ce81b76a ED |
1279 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
1280 | { | |
1281 | struct list_head *lh; | |
1282 | struct net *net; | |
1283 | ||
1284 | net = dev_net(dev); | |
1285 | lh = rcu_dereference(dev->dev_list.next); | |
1286 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
1287 | } | |
1288 | ||
a050c33f DL |
1289 | static inline struct net_device *first_net_device(struct net *net) |
1290 | { | |
1291 | return list_empty(&net->dev_base_head) ? NULL : | |
1292 | net_device_entry(net->dev_base_head.next); | |
1293 | } | |
7562f876 | 1294 | |
1da177e4 LT |
1295 | extern int netdev_boot_setup_check(struct net_device *dev); |
1296 | extern unsigned long netdev_boot_base(const char *prefix, int unit); | |
881d966b EB |
1297 | extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr); |
1298 | extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1299 | extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1da177e4 LT |
1300 | extern void dev_add_pack(struct packet_type *pt); |
1301 | extern void dev_remove_pack(struct packet_type *pt); | |
1302 | extern void __dev_remove_pack(struct packet_type *pt); | |
1303 | ||
bb69ae04 ED |
1304 | extern struct net_device *dev_get_by_flags_rcu(struct net *net, unsigned short flags, |
1305 | unsigned short mask); | |
881d966b | 1306 | extern struct net_device *dev_get_by_name(struct net *net, const char *name); |
72c9528b | 1307 | extern struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); |
881d966b | 1308 | extern struct net_device *__dev_get_by_name(struct net *net, const char *name); |
1da177e4 LT |
1309 | extern int dev_alloc_name(struct net_device *dev, const char *name); |
1310 | extern int dev_open(struct net_device *dev); | |
1311 | extern int dev_close(struct net_device *dev); | |
0187bdfb | 1312 | extern void dev_disable_lro(struct net_device *dev); |
1da177e4 LT |
1313 | extern int dev_queue_xmit(struct sk_buff *skb); |
1314 | extern int register_netdevice(struct net_device *dev); | |
44a0873d ED |
1315 | extern void unregister_netdevice_queue(struct net_device *dev, |
1316 | struct list_head *head); | |
9b5e383c | 1317 | extern void unregister_netdevice_many(struct list_head *head); |
44a0873d ED |
1318 | static inline void unregister_netdevice(struct net_device *dev) |
1319 | { | |
1320 | unregister_netdevice_queue(dev, NULL); | |
1321 | } | |
1322 | ||
1da177e4 LT |
1323 | extern void free_netdev(struct net_device *dev); |
1324 | extern void synchronize_net(void); | |
1325 | extern int register_netdevice_notifier(struct notifier_block *nb); | |
1326 | extern int unregister_netdevice_notifier(struct notifier_block *nb); | |
937f1ba5 | 1327 | extern int init_dummy_netdev(struct net_device *dev); |
9d40bbda | 1328 | extern void netdev_resync_ops(struct net_device *dev); |
937f1ba5 | 1329 | |
ad7379d4 | 1330 | extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
881d966b EB |
1331 | extern struct net_device *dev_get_by_index(struct net *net, int ifindex); |
1332 | extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
fb699dfd | 1333 | extern struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); |
1da177e4 LT |
1334 | extern int dev_restart(struct net_device *dev); |
1335 | #ifdef CONFIG_NETPOLL_TRAP | |
1336 | extern int netpoll_trap(void); | |
1337 | #endif | |
86911732 HX |
1338 | extern int skb_gro_receive(struct sk_buff **head, |
1339 | struct sk_buff *skb); | |
78a478d0 | 1340 | extern void skb_gro_reset_offset(struct sk_buff *skb); |
86911732 HX |
1341 | |
1342 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) | |
1343 | { | |
1344 | return NAPI_GRO_CB(skb)->data_offset; | |
1345 | } | |
1346 | ||
1347 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) | |
1348 | { | |
1349 | return skb->len - NAPI_GRO_CB(skb)->data_offset; | |
1350 | } | |
1351 | ||
1352 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) | |
1353 | { | |
1354 | NAPI_GRO_CB(skb)->data_offset += len; | |
1355 | } | |
1356 | ||
a5b1cf28 HX |
1357 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
1358 | unsigned int offset) | |
86911732 | 1359 | { |
a5b1cf28 HX |
1360 | return NAPI_GRO_CB(skb)->frag0 + offset; |
1361 | } | |
78a478d0 | 1362 | |
a5b1cf28 HX |
1363 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
1364 | { | |
1365 | return NAPI_GRO_CB(skb)->frag0_len < hlen; | |
1366 | } | |
78a478d0 | 1367 | |
a5b1cf28 HX |
1368 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
1369 | unsigned int offset) | |
1370 | { | |
1371 | NAPI_GRO_CB(skb)->frag0 = NULL; | |
1372 | NAPI_GRO_CB(skb)->frag0_len = 0; | |
1373 | return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL; | |
86911732 | 1374 | } |
1da177e4 | 1375 | |
aa4b9f53 HX |
1376 | static inline void *skb_gro_mac_header(struct sk_buff *skb) |
1377 | { | |
78d3fd0b | 1378 | return NAPI_GRO_CB(skb)->frag0 ?: skb_mac_header(skb); |
aa4b9f53 HX |
1379 | } |
1380 | ||
36e7b1b8 HX |
1381 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
1382 | { | |
78d3fd0b HX |
1383 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
1384 | skb_network_offset(skb); | |
36e7b1b8 HX |
1385 | } |
1386 | ||
0c4e8581 SH |
1387 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
1388 | unsigned short type, | |
3b04ddde SH |
1389 | const void *daddr, const void *saddr, |
1390 | unsigned len) | |
0c4e8581 | 1391 | { |
f1ecfd5d | 1392 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 1393 | return 0; |
3b04ddde SH |
1394 | |
1395 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
1396 | } |
1397 | ||
b95cce35 SH |
1398 | static inline int dev_parse_header(const struct sk_buff *skb, |
1399 | unsigned char *haddr) | |
1400 | { | |
1401 | const struct net_device *dev = skb->dev; | |
1402 | ||
1b83336b | 1403 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 1404 | return 0; |
3b04ddde | 1405 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
1406 | } |
1407 | ||
1da177e4 LT |
1408 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
1409 | extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); | |
1410 | static inline int unregister_gifconf(unsigned int family) | |
1411 | { | |
1412 | return register_gifconf(family, NULL); | |
1413 | } | |
1414 | ||
1415 | /* | |
88751275 | 1416 | * Incoming packets are placed on per-cpu queues |
1da177e4 | 1417 | */ |
d94d9fee | 1418 | struct softnet_data { |
37437bb2 | 1419 | struct Qdisc *output_queue; |
a9cbd588 | 1420 | struct Qdisc **output_queue_tailp; |
1da177e4 | 1421 | struct list_head poll_list; |
1da177e4 | 1422 | struct sk_buff *completion_queue; |
6e7676c1 | 1423 | struct sk_buff_head process_queue; |
1da177e4 | 1424 | |
dee42870 | 1425 | /* stats */ |
cd7b5396 DM |
1426 | unsigned int processed; |
1427 | unsigned int time_squeeze; | |
1428 | unsigned int cpu_collision; | |
1429 | unsigned int received_rps; | |
dee42870 | 1430 | |
fd793d89 | 1431 | #ifdef CONFIG_RPS |
88751275 ED |
1432 | struct softnet_data *rps_ipi_list; |
1433 | ||
1434 | /* Elements below can be accessed between CPUs for RPS */ | |
0a9627f2 | 1435 | struct call_single_data csd ____cacheline_aligned_in_smp; |
88751275 ED |
1436 | struct softnet_data *rps_ipi_next; |
1437 | unsigned int cpu; | |
fec5e652 | 1438 | unsigned int input_queue_head; |
76cc8b13 | 1439 | unsigned int input_queue_tail; |
1e94d72f | 1440 | #endif |
dee42870 | 1441 | unsigned dropped; |
0a9627f2 | 1442 | struct sk_buff_head input_pkt_queue; |
bea3348e | 1443 | struct napi_struct backlog; |
1da177e4 LT |
1444 | }; |
1445 | ||
76cc8b13 | 1446 | static inline void input_queue_head_incr(struct softnet_data *sd) |
fec5e652 TH |
1447 | { |
1448 | #ifdef CONFIG_RPS | |
76cc8b13 TH |
1449 | sd->input_queue_head++; |
1450 | #endif | |
1451 | } | |
1452 | ||
1453 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, | |
1454 | unsigned int *qtail) | |
1455 | { | |
1456 | #ifdef CONFIG_RPS | |
1457 | *qtail = ++sd->input_queue_tail; | |
fec5e652 TH |
1458 | #endif |
1459 | } | |
1460 | ||
0a9627f2 | 1461 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
1da177e4 LT |
1462 | |
1463 | #define HAVE_NETIF_QUEUE | |
1464 | ||
37437bb2 | 1465 | extern void __netif_schedule(struct Qdisc *q); |
1da177e4 | 1466 | |
86d804e1 | 1467 | static inline void netif_schedule_queue(struct netdev_queue *txq) |
1da177e4 | 1468 | { |
79d16385 | 1469 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1470 | __netif_schedule(txq->qdisc); |
86d804e1 DM |
1471 | } |
1472 | ||
fd2ea0a7 DM |
1473 | static inline void netif_tx_schedule_all(struct net_device *dev) |
1474 | { | |
1475 | unsigned int i; | |
1476 | ||
1477 | for (i = 0; i < dev->num_tx_queues; i++) | |
1478 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
1479 | } | |
1480 | ||
d29f749e DJ |
1481 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
1482 | { | |
1483 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1484 | } | |
1485 | ||
bea3348e SH |
1486 | /** |
1487 | * netif_start_queue - allow transmit | |
1488 | * @dev: network device | |
1489 | * | |
1490 | * Allow upper layers to call the device hard_start_xmit routine. | |
1491 | */ | |
1da177e4 LT |
1492 | static inline void netif_start_queue(struct net_device *dev) |
1493 | { | |
e8a0464c | 1494 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1495 | } |
1496 | ||
fd2ea0a7 DM |
1497 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
1498 | { | |
1499 | unsigned int i; | |
1500 | ||
1501 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1502 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1503 | netif_tx_start_queue(txq); | |
1504 | } | |
1505 | } | |
1506 | ||
79d16385 | 1507 | static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) |
1da177e4 LT |
1508 | { |
1509 | #ifdef CONFIG_NETPOLL_TRAP | |
5f286e11 | 1510 | if (netpoll_trap()) { |
7b3d3e4f | 1511 | netif_tx_start_queue(dev_queue); |
1da177e4 | 1512 | return; |
5f286e11 | 1513 | } |
1da177e4 | 1514 | #endif |
79d16385 | 1515 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state)) |
37437bb2 | 1516 | __netif_schedule(dev_queue->qdisc); |
79d16385 DM |
1517 | } |
1518 | ||
d29f749e DJ |
1519 | /** |
1520 | * netif_wake_queue - restart transmit | |
1521 | * @dev: network device | |
1522 | * | |
1523 | * Allow upper layers to call the device hard_start_xmit routine. | |
1524 | * Used for flow control when transmit resources are available. | |
1525 | */ | |
79d16385 DM |
1526 | static inline void netif_wake_queue(struct net_device *dev) |
1527 | { | |
e8a0464c | 1528 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1529 | } |
1530 | ||
fd2ea0a7 DM |
1531 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
1532 | { | |
1533 | unsigned int i; | |
1534 | ||
1535 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1536 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1537 | netif_tx_wake_queue(txq); | |
1538 | } | |
1539 | } | |
1540 | ||
d29f749e DJ |
1541 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
1542 | { | |
1543 | set_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1544 | } | |
1545 | ||
bea3348e SH |
1546 | /** |
1547 | * netif_stop_queue - stop transmitted packets | |
1548 | * @dev: network device | |
1549 | * | |
1550 | * Stop upper layers calling the device hard_start_xmit routine. | |
1551 | * Used for flow control when transmit resources are unavailable. | |
1552 | */ | |
1da177e4 LT |
1553 | static inline void netif_stop_queue(struct net_device *dev) |
1554 | { | |
e8a0464c | 1555 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1556 | } |
1557 | ||
fd2ea0a7 DM |
1558 | static inline void netif_tx_stop_all_queues(struct net_device *dev) |
1559 | { | |
1560 | unsigned int i; | |
1561 | ||
1562 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1563 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1564 | netif_tx_stop_queue(txq); | |
1565 | } | |
1566 | } | |
1567 | ||
d29f749e DJ |
1568 | static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
1569 | { | |
1570 | return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1571 | } | |
1572 | ||
bea3348e SH |
1573 | /** |
1574 | * netif_queue_stopped - test if transmit queue is flowblocked | |
1575 | * @dev: network device | |
1576 | * | |
1577 | * Test if transmit queue on device is currently unable to send. | |
1578 | */ | |
1da177e4 LT |
1579 | static inline int netif_queue_stopped(const struct net_device *dev) |
1580 | { | |
e8a0464c | 1581 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1582 | } |
1583 | ||
c3f26a26 DM |
1584 | static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue) |
1585 | { | |
1586 | return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state); | |
1587 | } | |
1588 | ||
bea3348e SH |
1589 | /** |
1590 | * netif_running - test if up | |
1591 | * @dev: network device | |
1592 | * | |
1593 | * Test if the device has been brought up. | |
1594 | */ | |
1da177e4 LT |
1595 | static inline int netif_running(const struct net_device *dev) |
1596 | { | |
1597 | return test_bit(__LINK_STATE_START, &dev->state); | |
1598 | } | |
1599 | ||
f25f4e44 PWJ |
1600 | /* |
1601 | * Routines to manage the subqueues on a device. We only need start | |
1602 | * stop, and a check if it's stopped. All other device management is | |
1603 | * done at the overall netdevice level. | |
1604 | * Also test the device if we're multiqueue. | |
1605 | */ | |
bea3348e SH |
1606 | |
1607 | /** | |
1608 | * netif_start_subqueue - allow sending packets on subqueue | |
1609 | * @dev: network device | |
1610 | * @queue_index: sub queue index | |
1611 | * | |
1612 | * Start individual transmit queue of a device with multiple transmit queues. | |
1613 | */ | |
f25f4e44 PWJ |
1614 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
1615 | { | |
fd2ea0a7 | 1616 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
1617 | |
1618 | netif_tx_start_queue(txq); | |
f25f4e44 PWJ |
1619 | } |
1620 | ||
bea3348e SH |
1621 | /** |
1622 | * netif_stop_subqueue - stop sending packets on subqueue | |
1623 | * @dev: network device | |
1624 | * @queue_index: sub queue index | |
1625 | * | |
1626 | * Stop individual transmit queue of a device with multiple transmit queues. | |
1627 | */ | |
f25f4e44 PWJ |
1628 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
1629 | { | |
fd2ea0a7 | 1630 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1631 | #ifdef CONFIG_NETPOLL_TRAP |
1632 | if (netpoll_trap()) | |
1633 | return; | |
1634 | #endif | |
7b3d3e4f | 1635 | netif_tx_stop_queue(txq); |
f25f4e44 PWJ |
1636 | } |
1637 | ||
bea3348e SH |
1638 | /** |
1639 | * netif_subqueue_stopped - test status of subqueue | |
1640 | * @dev: network device | |
1641 | * @queue_index: sub queue index | |
1642 | * | |
1643 | * Check individual transmit queue of a device with multiple transmit queues. | |
1644 | */ | |
668f895a | 1645 | static inline int __netif_subqueue_stopped(const struct net_device *dev, |
f25f4e44 PWJ |
1646 | u16 queue_index) |
1647 | { | |
fd2ea0a7 | 1648 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
1649 | |
1650 | return netif_tx_queue_stopped(txq); | |
f25f4e44 PWJ |
1651 | } |
1652 | ||
668f895a PE |
1653 | static inline int netif_subqueue_stopped(const struct net_device *dev, |
1654 | struct sk_buff *skb) | |
1655 | { | |
1656 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
1657 | } | |
bea3348e SH |
1658 | |
1659 | /** | |
1660 | * netif_wake_subqueue - allow sending packets on subqueue | |
1661 | * @dev: network device | |
1662 | * @queue_index: sub queue index | |
1663 | * | |
1664 | * Resume individual transmit queue of a device with multiple transmit queues. | |
1665 | */ | |
f25f4e44 PWJ |
1666 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) |
1667 | { | |
fd2ea0a7 | 1668 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1669 | #ifdef CONFIG_NETPOLL_TRAP |
1670 | if (netpoll_trap()) | |
1671 | return; | |
1672 | #endif | |
fd2ea0a7 | 1673 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1674 | __netif_schedule(txq->qdisc); |
f25f4e44 PWJ |
1675 | } |
1676 | ||
bea3348e SH |
1677 | /** |
1678 | * netif_is_multiqueue - test if device has multiple transmit queues | |
1679 | * @dev: network device | |
1680 | * | |
1681 | * Check if device has multiple transmit queues | |
bea3348e | 1682 | */ |
f25f4e44 PWJ |
1683 | static inline int netif_is_multiqueue(const struct net_device *dev) |
1684 | { | |
a02cec21 | 1685 | return dev->num_tx_queues > 1; |
f25f4e44 | 1686 | } |
1da177e4 | 1687 | |
f0796d5c JF |
1688 | extern void netif_set_real_num_tx_queues(struct net_device *dev, |
1689 | unsigned int txq); | |
1690 | ||
62fe0b40 BH |
1691 | #ifdef CONFIG_RPS |
1692 | extern int netif_set_real_num_rx_queues(struct net_device *dev, | |
1693 | unsigned int rxq); | |
1694 | #else | |
1695 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, | |
1696 | unsigned int rxq) | |
1697 | { | |
1698 | return 0; | |
1699 | } | |
1700 | #endif | |
1701 | ||
3171d026 BH |
1702 | static inline int netif_copy_real_num_queues(struct net_device *to_dev, |
1703 | const struct net_device *from_dev) | |
1704 | { | |
1705 | netif_set_real_num_tx_queues(to_dev, from_dev->real_num_tx_queues); | |
1706 | #ifdef CONFIG_RPS | |
1707 | return netif_set_real_num_rx_queues(to_dev, | |
1708 | from_dev->real_num_rx_queues); | |
1709 | #else | |
1710 | return 0; | |
1711 | #endif | |
1712 | } | |
1713 | ||
1da177e4 | 1714 | /* Use this variant when it is known for sure that it |
0ef47309 ML |
1715 | * is executing from hardware interrupt context or with hardware interrupts |
1716 | * disabled. | |
1da177e4 | 1717 | */ |
bea3348e | 1718 | extern void dev_kfree_skb_irq(struct sk_buff *skb); |
1da177e4 LT |
1719 | |
1720 | /* Use this variant in places where it could be invoked | |
0ef47309 ML |
1721 | * from either hardware interrupt or other context, with hardware interrupts |
1722 | * either disabled or enabled. | |
1da177e4 | 1723 | */ |
56079431 | 1724 | extern void dev_kfree_skb_any(struct sk_buff *skb); |
1da177e4 LT |
1725 | |
1726 | #define HAVE_NETIF_RX 1 | |
1727 | extern int netif_rx(struct sk_buff *skb); | |
1728 | extern int netif_rx_ni(struct sk_buff *skb); | |
1729 | #define HAVE_NETIF_RECEIVE_SKB 1 | |
1730 | extern int netif_receive_skb(struct sk_buff *skb); | |
5b252f0c | 1731 | extern gro_result_t dev_gro_receive(struct napi_struct *napi, |
96e93eab | 1732 | struct sk_buff *skb); |
c7c4b3b6 BH |
1733 | extern gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb); |
1734 | extern gro_result_t napi_gro_receive(struct napi_struct *napi, | |
d565b0a1 | 1735 | struct sk_buff *skb); |
86cac58b | 1736 | extern void napi_gro_flush(struct napi_struct *napi); |
96e93eab HX |
1737 | extern void napi_reuse_skb(struct napi_struct *napi, |
1738 | struct sk_buff *skb); | |
76620aaf | 1739 | extern struct sk_buff * napi_get_frags(struct napi_struct *napi); |
c7c4b3b6 | 1740 | extern gro_result_t napi_frags_finish(struct napi_struct *napi, |
5b252f0c BH |
1741 | struct sk_buff *skb, |
1742 | gro_result_t ret); | |
76620aaf | 1743 | extern struct sk_buff * napi_frags_skb(struct napi_struct *napi); |
c7c4b3b6 | 1744 | extern gro_result_t napi_gro_frags(struct napi_struct *napi); |
76620aaf HX |
1745 | |
1746 | static inline void napi_free_frags(struct napi_struct *napi) | |
1747 | { | |
1748 | kfree_skb(napi->skb); | |
1749 | napi->skb = NULL; | |
1750 | } | |
1751 | ||
ab95bfe0 | 1752 | extern int netdev_rx_handler_register(struct net_device *dev, |
93e2c32b JP |
1753 | rx_handler_func_t *rx_handler, |
1754 | void *rx_handler_data); | |
ab95bfe0 JP |
1755 | extern void netdev_rx_handler_unregister(struct net_device *dev); |
1756 | ||
bc1d0411 | 1757 | extern void netif_nit_deliver(struct sk_buff *skb); |
c2373ee9 | 1758 | extern int dev_valid_name(const char *name); |
881d966b EB |
1759 | extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); |
1760 | extern int dev_ethtool(struct net *net, struct ifreq *); | |
1da177e4 | 1761 | extern unsigned dev_get_flags(const struct net_device *); |
bd380811 | 1762 | extern int __dev_change_flags(struct net_device *, unsigned int flags); |
1da177e4 | 1763 | extern int dev_change_flags(struct net_device *, unsigned); |
bd380811 | 1764 | extern void __dev_notify_flags(struct net_device *, unsigned int old_flags); |
cf04a4c7 | 1765 | extern int dev_change_name(struct net_device *, const char *); |
0b815a1a | 1766 | extern int dev_set_alias(struct net_device *, const char *, size_t); |
ce286d32 EB |
1767 | extern int dev_change_net_namespace(struct net_device *, |
1768 | struct net *, const char *); | |
1da177e4 LT |
1769 | extern int dev_set_mtu(struct net_device *, int); |
1770 | extern int dev_set_mac_address(struct net_device *, | |
1771 | struct sockaddr *); | |
f6a78bfc | 1772 | extern int dev_hard_start_xmit(struct sk_buff *skb, |
fd2ea0a7 DM |
1773 | struct net_device *dev, |
1774 | struct netdev_queue *txq); | |
44540960 AB |
1775 | extern int dev_forward_skb(struct net_device *dev, |
1776 | struct sk_buff *skb); | |
1da177e4 | 1777 | |
20380731 | 1778 | extern int netdev_budget; |
1da177e4 LT |
1779 | |
1780 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
1781 | extern void netdev_run_todo(void); | |
1782 | ||
bea3348e SH |
1783 | /** |
1784 | * dev_put - release reference to device | |
1785 | * @dev: network device | |
1786 | * | |
9ef4429b | 1787 | * Release reference to device to allow it to be freed. |
bea3348e | 1788 | */ |
1da177e4 LT |
1789 | static inline void dev_put(struct net_device *dev) |
1790 | { | |
1791 | atomic_dec(&dev->refcnt); | |
1792 | } | |
1793 | ||
bea3348e SH |
1794 | /** |
1795 | * dev_hold - get reference to device | |
1796 | * @dev: network device | |
1797 | * | |
9ef4429b | 1798 | * Hold reference to device to keep it from being freed. |
bea3348e | 1799 | */ |
15333061 SH |
1800 | static inline void dev_hold(struct net_device *dev) |
1801 | { | |
1802 | atomic_inc(&dev->refcnt); | |
1803 | } | |
1da177e4 LT |
1804 | |
1805 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
1806 | * and _off may be called from IRQ context, but it is caller | |
1807 | * who is responsible for serialization of these calls. | |
b00055aa SR |
1808 | * |
1809 | * The name carrier is inappropriate, these functions should really be | |
1810 | * called netif_lowerlayer_*() because they represent the state of any | |
1811 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
1812 | */ |
1813 | ||
1814 | extern void linkwatch_fire_event(struct net_device *dev); | |
e014debe | 1815 | extern void linkwatch_forget_dev(struct net_device *dev); |
1da177e4 | 1816 | |
bea3348e SH |
1817 | /** |
1818 | * netif_carrier_ok - test if carrier present | |
1819 | * @dev: network device | |
1820 | * | |
1821 | * Check if carrier is present on device | |
1822 | */ | |
1da177e4 LT |
1823 | static inline int netif_carrier_ok(const struct net_device *dev) |
1824 | { | |
1825 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
1826 | } | |
1827 | ||
9d21493b ED |
1828 | extern unsigned long dev_trans_start(struct net_device *dev); |
1829 | ||
1da177e4 LT |
1830 | extern void __netdev_watchdog_up(struct net_device *dev); |
1831 | ||
0a242efc | 1832 | extern void netif_carrier_on(struct net_device *dev); |
1da177e4 | 1833 | |
0a242efc | 1834 | extern void netif_carrier_off(struct net_device *dev); |
1da177e4 | 1835 | |
06c4648d IC |
1836 | extern void netif_notify_peers(struct net_device *dev); |
1837 | ||
bea3348e SH |
1838 | /** |
1839 | * netif_dormant_on - mark device as dormant. | |
1840 | * @dev: network device | |
1841 | * | |
1842 | * Mark device as dormant (as per RFC2863). | |
1843 | * | |
1844 | * The dormant state indicates that the relevant interface is not | |
1845 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
1846 | * in a "pending" state, waiting for some external event. For "on- | |
1847 | * demand" interfaces, this new state identifies the situation where the | |
1848 | * interface is waiting for events to place it in the up state. | |
1849 | * | |
1850 | */ | |
b00055aa SR |
1851 | static inline void netif_dormant_on(struct net_device *dev) |
1852 | { | |
1853 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1854 | linkwatch_fire_event(dev); | |
1855 | } | |
1856 | ||
bea3348e SH |
1857 | /** |
1858 | * netif_dormant_off - set device as not dormant. | |
1859 | * @dev: network device | |
1860 | * | |
1861 | * Device is not in dormant state. | |
1862 | */ | |
b00055aa SR |
1863 | static inline void netif_dormant_off(struct net_device *dev) |
1864 | { | |
1865 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
1866 | linkwatch_fire_event(dev); | |
1867 | } | |
1868 | ||
bea3348e SH |
1869 | /** |
1870 | * netif_dormant - test if carrier present | |
1871 | * @dev: network device | |
1872 | * | |
1873 | * Check if carrier is present on device | |
1874 | */ | |
b00055aa SR |
1875 | static inline int netif_dormant(const struct net_device *dev) |
1876 | { | |
1877 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
1878 | } | |
1879 | ||
1880 | ||
bea3348e SH |
1881 | /** |
1882 | * netif_oper_up - test if device is operational | |
1883 | * @dev: network device | |
1884 | * | |
1885 | * Check if carrier is operational | |
1886 | */ | |
d94d9fee ED |
1887 | static inline int netif_oper_up(const struct net_device *dev) |
1888 | { | |
b00055aa SR |
1889 | return (dev->operstate == IF_OPER_UP || |
1890 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
1891 | } | |
1892 | ||
bea3348e SH |
1893 | /** |
1894 | * netif_device_present - is device available or removed | |
1895 | * @dev: network device | |
1896 | * | |
1897 | * Check if device has not been removed from system. | |
1898 | */ | |
1da177e4 LT |
1899 | static inline int netif_device_present(struct net_device *dev) |
1900 | { | |
1901 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
1902 | } | |
1903 | ||
56079431 | 1904 | extern void netif_device_detach(struct net_device *dev); |
1da177e4 | 1905 | |
56079431 | 1906 | extern void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
1907 | |
1908 | /* | |
1909 | * Network interface message level settings | |
1910 | */ | |
1911 | #define HAVE_NETIF_MSG 1 | |
1912 | ||
1913 | enum { | |
1914 | NETIF_MSG_DRV = 0x0001, | |
1915 | NETIF_MSG_PROBE = 0x0002, | |
1916 | NETIF_MSG_LINK = 0x0004, | |
1917 | NETIF_MSG_TIMER = 0x0008, | |
1918 | NETIF_MSG_IFDOWN = 0x0010, | |
1919 | NETIF_MSG_IFUP = 0x0020, | |
1920 | NETIF_MSG_RX_ERR = 0x0040, | |
1921 | NETIF_MSG_TX_ERR = 0x0080, | |
1922 | NETIF_MSG_TX_QUEUED = 0x0100, | |
1923 | NETIF_MSG_INTR = 0x0200, | |
1924 | NETIF_MSG_TX_DONE = 0x0400, | |
1925 | NETIF_MSG_RX_STATUS = 0x0800, | |
1926 | NETIF_MSG_PKTDATA = 0x1000, | |
1927 | NETIF_MSG_HW = 0x2000, | |
1928 | NETIF_MSG_WOL = 0x4000, | |
1929 | }; | |
1930 | ||
1931 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
1932 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
1933 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
1934 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
1935 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
1936 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
1937 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
1938 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
1939 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
1940 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
1941 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
1942 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
1943 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
1944 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
1945 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
1946 | ||
1947 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
1948 | { | |
1949 | /* use default */ | |
1950 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
1951 | return default_msg_enable_bits; | |
1952 | if (debug_value == 0) /* no output */ | |
1953 | return 0; | |
1954 | /* set low N bits */ | |
1955 | return (1 << debug_value) - 1; | |
1956 | } | |
1957 | ||
c773e847 | 1958 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 1959 | { |
c773e847 DM |
1960 | spin_lock(&txq->_xmit_lock); |
1961 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
1962 | } |
1963 | ||
fd2ea0a7 DM |
1964 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
1965 | { | |
1966 | spin_lock_bh(&txq->_xmit_lock); | |
1967 | txq->xmit_lock_owner = smp_processor_id(); | |
1968 | } | |
1969 | ||
c3f26a26 DM |
1970 | static inline int __netif_tx_trylock(struct netdev_queue *txq) |
1971 | { | |
1972 | int ok = spin_trylock(&txq->_xmit_lock); | |
1973 | if (likely(ok)) | |
1974 | txq->xmit_lock_owner = smp_processor_id(); | |
1975 | return ok; | |
1976 | } | |
1977 | ||
1978 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
1979 | { | |
1980 | txq->xmit_lock_owner = -1; | |
1981 | spin_unlock(&txq->_xmit_lock); | |
1982 | } | |
1983 | ||
1984 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
1985 | { | |
1986 | txq->xmit_lock_owner = -1; | |
1987 | spin_unlock_bh(&txq->_xmit_lock); | |
1988 | } | |
1989 | ||
08baf561 ED |
1990 | static inline void txq_trans_update(struct netdev_queue *txq) |
1991 | { | |
1992 | if (txq->xmit_lock_owner != -1) | |
1993 | txq->trans_start = jiffies; | |
1994 | } | |
1995 | ||
d29f749e DJ |
1996 | /** |
1997 | * netif_tx_lock - grab network device transmit lock | |
1998 | * @dev: network device | |
d29f749e DJ |
1999 | * |
2000 | * Get network device transmit lock | |
2001 | */ | |
22dd7495 JHS |
2002 | static inline void netif_tx_lock(struct net_device *dev) |
2003 | { | |
e8a0464c | 2004 | unsigned int i; |
c3f26a26 | 2005 | int cpu; |
c773e847 | 2006 | |
c3f26a26 DM |
2007 | spin_lock(&dev->tx_global_lock); |
2008 | cpu = smp_processor_id(); | |
e8a0464c DM |
2009 | for (i = 0; i < dev->num_tx_queues; i++) { |
2010 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
2011 | |
2012 | /* We are the only thread of execution doing a | |
2013 | * freeze, but we have to grab the _xmit_lock in | |
2014 | * order to synchronize with threads which are in | |
2015 | * the ->hard_start_xmit() handler and already | |
2016 | * checked the frozen bit. | |
2017 | */ | |
e8a0464c | 2018 | __netif_tx_lock(txq, cpu); |
c3f26a26 DM |
2019 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
2020 | __netif_tx_unlock(txq); | |
e8a0464c | 2021 | } |
932ff279 HX |
2022 | } |
2023 | ||
2024 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
2025 | { | |
e8a0464c DM |
2026 | local_bh_disable(); |
2027 | netif_tx_lock(dev); | |
932ff279 HX |
2028 | } |
2029 | ||
932ff279 HX |
2030 | static inline void netif_tx_unlock(struct net_device *dev) |
2031 | { | |
e8a0464c DM |
2032 | unsigned int i; |
2033 | ||
2034 | for (i = 0; i < dev->num_tx_queues; i++) { | |
2035 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c773e847 | 2036 | |
c3f26a26 DM |
2037 | /* No need to grab the _xmit_lock here. If the |
2038 | * queue is not stopped for another reason, we | |
2039 | * force a schedule. | |
2040 | */ | |
2041 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
7b3d3e4f | 2042 | netif_schedule_queue(txq); |
c3f26a26 DM |
2043 | } |
2044 | spin_unlock(&dev->tx_global_lock); | |
932ff279 HX |
2045 | } |
2046 | ||
2047 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
2048 | { | |
e8a0464c DM |
2049 | netif_tx_unlock(dev); |
2050 | local_bh_enable(); | |
932ff279 HX |
2051 | } |
2052 | ||
c773e847 | 2053 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 2054 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 2055 | __netif_tx_lock(txq, cpu); \ |
22dd7495 JHS |
2056 | } \ |
2057 | } | |
2058 | ||
c773e847 | 2059 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 2060 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 2061 | __netif_tx_unlock(txq); \ |
22dd7495 JHS |
2062 | } \ |
2063 | } | |
2064 | ||
1da177e4 LT |
2065 | static inline void netif_tx_disable(struct net_device *dev) |
2066 | { | |
fd2ea0a7 | 2067 | unsigned int i; |
c3f26a26 | 2068 | int cpu; |
fd2ea0a7 | 2069 | |
c3f26a26 DM |
2070 | local_bh_disable(); |
2071 | cpu = smp_processor_id(); | |
fd2ea0a7 DM |
2072 | for (i = 0; i < dev->num_tx_queues; i++) { |
2073 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
2074 | |
2075 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 2076 | netif_tx_stop_queue(txq); |
c3f26a26 | 2077 | __netif_tx_unlock(txq); |
fd2ea0a7 | 2078 | } |
c3f26a26 | 2079 | local_bh_enable(); |
1da177e4 LT |
2080 | } |
2081 | ||
e308a5d8 DM |
2082 | static inline void netif_addr_lock(struct net_device *dev) |
2083 | { | |
2084 | spin_lock(&dev->addr_list_lock); | |
2085 | } | |
2086 | ||
2087 | static inline void netif_addr_lock_bh(struct net_device *dev) | |
2088 | { | |
2089 | spin_lock_bh(&dev->addr_list_lock); | |
2090 | } | |
2091 | ||
2092 | static inline void netif_addr_unlock(struct net_device *dev) | |
2093 | { | |
2094 | spin_unlock(&dev->addr_list_lock); | |
2095 | } | |
2096 | ||
2097 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
2098 | { | |
2099 | spin_unlock_bh(&dev->addr_list_lock); | |
2100 | } | |
2101 | ||
f001fde5 | 2102 | /* |
31278e71 | 2103 | * dev_addrs walker. Should be used only for read access. Call with |
f001fde5 JP |
2104 | * rcu_read_lock held. |
2105 | */ | |
2106 | #define for_each_dev_addr(dev, ha) \ | |
31278e71 | 2107 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
f001fde5 | 2108 | |
1da177e4 LT |
2109 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
2110 | ||
2111 | extern void ether_setup(struct net_device *dev); | |
2112 | ||
2113 | /* Support for loadable net-drivers */ | |
f25f4e44 PWJ |
2114 | extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, |
2115 | void (*setup)(struct net_device *), | |
2116 | unsigned int queue_count); | |
2117 | #define alloc_netdev(sizeof_priv, name, setup) \ | |
2118 | alloc_netdev_mq(sizeof_priv, name, setup, 1) | |
1da177e4 LT |
2119 | extern int register_netdev(struct net_device *dev); |
2120 | extern void unregister_netdev(struct net_device *dev); | |
f001fde5 | 2121 | |
22bedad3 JP |
2122 | /* General hardware address lists handling functions */ |
2123 | extern int __hw_addr_add_multiple(struct netdev_hw_addr_list *to_list, | |
2124 | struct netdev_hw_addr_list *from_list, | |
2125 | int addr_len, unsigned char addr_type); | |
2126 | extern void __hw_addr_del_multiple(struct netdev_hw_addr_list *to_list, | |
2127 | struct netdev_hw_addr_list *from_list, | |
2128 | int addr_len, unsigned char addr_type); | |
2129 | extern int __hw_addr_sync(struct netdev_hw_addr_list *to_list, | |
2130 | struct netdev_hw_addr_list *from_list, | |
2131 | int addr_len); | |
2132 | extern void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, | |
2133 | struct netdev_hw_addr_list *from_list, | |
2134 | int addr_len); | |
2135 | extern void __hw_addr_flush(struct netdev_hw_addr_list *list); | |
2136 | extern void __hw_addr_init(struct netdev_hw_addr_list *list); | |
2137 | ||
f001fde5 JP |
2138 | /* Functions used for device addresses handling */ |
2139 | extern int dev_addr_add(struct net_device *dev, unsigned char *addr, | |
2140 | unsigned char addr_type); | |
2141 | extern int dev_addr_del(struct net_device *dev, unsigned char *addr, | |
2142 | unsigned char addr_type); | |
2143 | extern int dev_addr_add_multiple(struct net_device *to_dev, | |
2144 | struct net_device *from_dev, | |
2145 | unsigned char addr_type); | |
2146 | extern int dev_addr_del_multiple(struct net_device *to_dev, | |
2147 | struct net_device *from_dev, | |
2148 | unsigned char addr_type); | |
a748ee24 JP |
2149 | extern void dev_addr_flush(struct net_device *dev); |
2150 | extern int dev_addr_init(struct net_device *dev); | |
2151 | ||
2152 | /* Functions used for unicast addresses handling */ | |
2153 | extern int dev_uc_add(struct net_device *dev, unsigned char *addr); | |
2154 | extern int dev_uc_del(struct net_device *dev, unsigned char *addr); | |
2155 | extern int dev_uc_sync(struct net_device *to, struct net_device *from); | |
2156 | extern void dev_uc_unsync(struct net_device *to, struct net_device *from); | |
2157 | extern void dev_uc_flush(struct net_device *dev); | |
2158 | extern void dev_uc_init(struct net_device *dev); | |
f001fde5 | 2159 | |
22bedad3 JP |
2160 | /* Functions used for multicast addresses handling */ |
2161 | extern int dev_mc_add(struct net_device *dev, unsigned char *addr); | |
2162 | extern int dev_mc_add_global(struct net_device *dev, unsigned char *addr); | |
2163 | extern int dev_mc_del(struct net_device *dev, unsigned char *addr); | |
2164 | extern int dev_mc_del_global(struct net_device *dev, unsigned char *addr); | |
2165 | extern int dev_mc_sync(struct net_device *to, struct net_device *from); | |
2166 | extern void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
2167 | extern void dev_mc_flush(struct net_device *dev); | |
2168 | extern void dev_mc_init(struct net_device *dev); | |
f001fde5 | 2169 | |
4417da66 PM |
2170 | /* Functions used for secondary unicast and multicast support */ |
2171 | extern void dev_set_rx_mode(struct net_device *dev); | |
2172 | extern void __dev_set_rx_mode(struct net_device *dev); | |
dad9b335 WC |
2173 | extern int dev_set_promiscuity(struct net_device *dev, int inc); |
2174 | extern int dev_set_allmulti(struct net_device *dev, int inc); | |
1da177e4 | 2175 | extern void netdev_state_change(struct net_device *dev); |
3ca5b404 | 2176 | extern int netdev_bonding_change(struct net_device *dev, |
75c78500 | 2177 | unsigned long event); |
d8a33ac4 | 2178 | extern void netdev_features_change(struct net_device *dev); |
1da177e4 | 2179 | /* Load a device via the kmod */ |
881d966b | 2180 | extern void dev_load(struct net *net, const char *name); |
1da177e4 | 2181 | extern void dev_mcast_init(void); |
d7753516 BH |
2182 | extern struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, |
2183 | struct rtnl_link_stats64 *storage); | |
28172739 | 2184 | extern void dev_txq_stats_fold(const struct net_device *dev, |
3cfde79c | 2185 | struct rtnl_link_stats64 *stats); |
eeda3fd6 | 2186 | |
1da177e4 | 2187 | extern int netdev_max_backlog; |
3b098e2d | 2188 | extern int netdev_tstamp_prequeue; |
1da177e4 LT |
2189 | extern int weight_p; |
2190 | extern int netdev_set_master(struct net_device *dev, struct net_device *master); | |
84fa7933 | 2191 | extern int skb_checksum_help(struct sk_buff *skb); |
576a30eb | 2192 | extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); |
fb286bb2 HX |
2193 | #ifdef CONFIG_BUG |
2194 | extern void netdev_rx_csum_fault(struct net_device *dev); | |
2195 | #else | |
2196 | static inline void netdev_rx_csum_fault(struct net_device *dev) | |
2197 | { | |
2198 | } | |
2199 | #endif | |
1da177e4 LT |
2200 | /* rx skb timestamps */ |
2201 | extern void net_enable_timestamp(void); | |
2202 | extern void net_disable_timestamp(void); | |
2203 | ||
20380731 ACM |
2204 | #ifdef CONFIG_PROC_FS |
2205 | extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); | |
2206 | extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); | |
2207 | extern void dev_seq_stop(struct seq_file *seq, void *v); | |
2208 | #endif | |
2209 | ||
b8a9787e JV |
2210 | extern int netdev_class_create_file(struct class_attribute *class_attr); |
2211 | extern void netdev_class_remove_file(struct class_attribute *class_attr); | |
2212 | ||
04600794 JB |
2213 | extern struct kobj_ns_type_operations net_ns_type_operations; |
2214 | ||
cf04a4c7 | 2215 | extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len); |
6579e57b | 2216 | |
20380731 ACM |
2217 | extern void linkwatch_run_queue(void); |
2218 | ||
b63365a2 HX |
2219 | unsigned long netdev_increment_features(unsigned long all, unsigned long one, |
2220 | unsigned long mask); | |
2221 | unsigned long netdev_fix_features(unsigned long features, const char *name); | |
7f353bf2 | 2222 | |
fc4a7489 PM |
2223 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
2224 | struct net_device *dev); | |
2225 | ||
bcd76111 | 2226 | static inline int net_gso_ok(int features, int gso_type) |
576a30eb | 2227 | { |
bcd76111 | 2228 | int feature = gso_type << NETIF_F_GSO_SHIFT; |
d6b4991a | 2229 | return (features & feature) == feature; |
576a30eb HX |
2230 | } |
2231 | ||
bcd76111 HX |
2232 | static inline int skb_gso_ok(struct sk_buff *skb, int features) |
2233 | { | |
278b2513 | 2234 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
21dc3301 | 2235 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
bcd76111 HX |
2236 | } |
2237 | ||
7967168c HX |
2238 | static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) |
2239 | { | |
a430a43d HX |
2240 | return skb_is_gso(skb) && |
2241 | (!skb_gso_ok(skb, dev->features) || | |
84fa7933 | 2242 | unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); |
7967168c HX |
2243 | } |
2244 | ||
82cc1a7a PWJ |
2245 | static inline void netif_set_gso_max_size(struct net_device *dev, |
2246 | unsigned int size) | |
2247 | { | |
2248 | dev->gso_max_size = size; | |
2249 | } | |
2250 | ||
acbbc071 ED |
2251 | extern int __skb_bond_should_drop(struct sk_buff *skb, |
2252 | struct net_device *master); | |
5d4e039b | 2253 | |
0641e4fb ED |
2254 | static inline int skb_bond_should_drop(struct sk_buff *skb, |
2255 | struct net_device *master) | |
7ea49ed7 | 2256 | { |
acbbc071 ED |
2257 | if (master) |
2258 | return __skb_bond_should_drop(skb, master); | |
7ea49ed7 DM |
2259 | return 0; |
2260 | } | |
2261 | ||
505d4f73 | 2262 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 PM |
2263 | |
2264 | static inline int dev_ethtool_get_settings(struct net_device *dev, | |
2265 | struct ethtool_cmd *cmd) | |
2266 | { | |
2267 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings) | |
2268 | return -EOPNOTSUPP; | |
2269 | return dev->ethtool_ops->get_settings(dev, cmd); | |
2270 | } | |
2271 | ||
2272 | static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev) | |
2273 | { | |
2274 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum) | |
2275 | return 0; | |
2276 | return dev->ethtool_ops->get_rx_csum(dev); | |
2277 | } | |
2278 | ||
2279 | static inline u32 dev_ethtool_get_flags(struct net_device *dev) | |
2280 | { | |
2281 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_flags) | |
2282 | return 0; | |
2283 | return dev->ethtool_ops->get_flags(dev); | |
2284 | } | |
571ba423 JP |
2285 | |
2286 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ | |
2287 | ||
2288 | /* netdev_printk helpers, similar to dev_printk */ | |
2289 | ||
2290 | static inline const char *netdev_name(const struct net_device *dev) | |
2291 | { | |
2292 | if (dev->reg_state != NETREG_REGISTERED) | |
2293 | return "(unregistered net_device)"; | |
2294 | return dev->name; | |
2295 | } | |
2296 | ||
256df2f3 JP |
2297 | extern int netdev_printk(const char *level, const struct net_device *dev, |
2298 | const char *format, ...) | |
2299 | __attribute__ ((format (printf, 3, 4))); | |
2300 | extern int netdev_emerg(const struct net_device *dev, const char *format, ...) | |
2301 | __attribute__ ((format (printf, 2, 3))); | |
2302 | extern int netdev_alert(const struct net_device *dev, const char *format, ...) | |
2303 | __attribute__ ((format (printf, 2, 3))); | |
2304 | extern int netdev_crit(const struct net_device *dev, const char *format, ...) | |
2305 | __attribute__ ((format (printf, 2, 3))); | |
2306 | extern int netdev_err(const struct net_device *dev, const char *format, ...) | |
2307 | __attribute__ ((format (printf, 2, 3))); | |
2308 | extern int netdev_warn(const struct net_device *dev, const char *format, ...) | |
2309 | __attribute__ ((format (printf, 2, 3))); | |
2310 | extern int netdev_notice(const struct net_device *dev, const char *format, ...) | |
2311 | __attribute__ ((format (printf, 2, 3))); | |
2312 | extern int netdev_info(const struct net_device *dev, const char *format, ...) | |
2313 | __attribute__ ((format (printf, 2, 3))); | |
571ba423 JP |
2314 | |
2315 | #if defined(DEBUG) | |
2316 | #define netdev_dbg(__dev, format, args...) \ | |
2317 | netdev_printk(KERN_DEBUG, __dev, format, ##args) | |
2318 | #elif defined(CONFIG_DYNAMIC_DEBUG) | |
2319 | #define netdev_dbg(__dev, format, args...) \ | |
2320 | do { \ | |
2321 | dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \ | |
2322 | netdev_name(__dev), ##args); \ | |
2323 | } while (0) | |
2324 | #else | |
2325 | #define netdev_dbg(__dev, format, args...) \ | |
2326 | ({ \ | |
2327 | if (0) \ | |
2328 | netdev_printk(KERN_DEBUG, __dev, format, ##args); \ | |
2329 | 0; \ | |
2330 | }) | |
2331 | #endif | |
2332 | ||
2333 | #if defined(VERBOSE_DEBUG) | |
2334 | #define netdev_vdbg netdev_dbg | |
2335 | #else | |
2336 | ||
2337 | #define netdev_vdbg(dev, format, args...) \ | |
2338 | ({ \ | |
2339 | if (0) \ | |
2340 | netdev_printk(KERN_DEBUG, dev, format, ##args); \ | |
2341 | 0; \ | |
2342 | }) | |
2343 | #endif | |
2344 | ||
2345 | /* | |
2346 | * netdev_WARN() acts like dev_printk(), but with the key difference | |
2347 | * of using a WARN/WARN_ON to get the message out, including the | |
2348 | * file/line information and a backtrace. | |
2349 | */ | |
2350 | #define netdev_WARN(dev, format, args...) \ | |
2351 | WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args); | |
2352 | ||
b3d95c5c JP |
2353 | /* netif printk helpers, similar to netdev_printk */ |
2354 | ||
2355 | #define netif_printk(priv, type, level, dev, fmt, args...) \ | |
2356 | do { \ | |
2357 | if (netif_msg_##type(priv)) \ | |
2358 | netdev_printk(level, (dev), fmt, ##args); \ | |
2359 | } while (0) | |
2360 | ||
f45f4321 JP |
2361 | #define netif_level(level, priv, type, dev, fmt, args...) \ |
2362 | do { \ | |
2363 | if (netif_msg_##type(priv)) \ | |
2364 | netdev_##level(dev, fmt, ##args); \ | |
2365 | } while (0) | |
2366 | ||
b3d95c5c | 2367 | #define netif_emerg(priv, type, dev, fmt, args...) \ |
f45f4321 | 2368 | netif_level(emerg, priv, type, dev, fmt, ##args) |
b3d95c5c | 2369 | #define netif_alert(priv, type, dev, fmt, args...) \ |
f45f4321 | 2370 | netif_level(alert, priv, type, dev, fmt, ##args) |
b3d95c5c | 2371 | #define netif_crit(priv, type, dev, fmt, args...) \ |
f45f4321 | 2372 | netif_level(crit, priv, type, dev, fmt, ##args) |
b3d95c5c | 2373 | #define netif_err(priv, type, dev, fmt, args...) \ |
f45f4321 | 2374 | netif_level(err, priv, type, dev, fmt, ##args) |
b3d95c5c | 2375 | #define netif_warn(priv, type, dev, fmt, args...) \ |
f45f4321 | 2376 | netif_level(warn, priv, type, dev, fmt, ##args) |
b3d95c5c | 2377 | #define netif_notice(priv, type, dev, fmt, args...) \ |
f45f4321 | 2378 | netif_level(notice, priv, type, dev, fmt, ##args) |
b3d95c5c | 2379 | #define netif_info(priv, type, dev, fmt, args...) \ |
f45f4321 | 2380 | netif_level(info, priv, type, dev, fmt, ##args) |
b3d95c5c JP |
2381 | |
2382 | #if defined(DEBUG) | |
2383 | #define netif_dbg(priv, type, dev, format, args...) \ | |
2384 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args) | |
2385 | #elif defined(CONFIG_DYNAMIC_DEBUG) | |
2386 | #define netif_dbg(priv, type, netdev, format, args...) \ | |
2387 | do { \ | |
2388 | if (netif_msg_##type(priv)) \ | |
2389 | dynamic_dev_dbg((netdev)->dev.parent, \ | |
2390 | "%s: " format, \ | |
2391 | netdev_name(netdev), ##args); \ | |
2392 | } while (0) | |
2393 | #else | |
2394 | #define netif_dbg(priv, type, dev, format, args...) \ | |
2395 | ({ \ | |
2396 | if (0) \ | |
2397 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ | |
2398 | 0; \ | |
2399 | }) | |
2400 | #endif | |
2401 | ||
2402 | #if defined(VERBOSE_DEBUG) | |
bcfcc450 | 2403 | #define netif_vdbg netif_dbg |
b3d95c5c JP |
2404 | #else |
2405 | #define netif_vdbg(priv, type, dev, format, args...) \ | |
2406 | ({ \ | |
2407 | if (0) \ | |
a4ed89cb | 2408 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
b3d95c5c JP |
2409 | 0; \ |
2410 | }) | |
2411 | #endif | |
571ba423 | 2412 | |
1da177e4 LT |
2413 | #endif /* __KERNEL__ */ |
2414 | ||
385a154c | 2415 | #endif /* _LINUX_NETDEVICE_H */ |