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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 | ||
d7fe0f24 | 28 | #include <linux/timer.h> |
187f1882 | 29 | #include <linux/bug.h> |
bea3348e | 30 | #include <linux/delay.h> |
60063497 | 31 | #include <linux/atomic.h> |
53511453 | 32 | #include <linux/prefetch.h> |
1da177e4 LT |
33 | #include <asm/cache.h> |
34 | #include <asm/byteorder.h> | |
35 | ||
1da177e4 | 36 | #include <linux/percpu.h> |
4d5b78c0 | 37 | #include <linux/rculist.h> |
db217334 | 38 | #include <linux/dmaengine.h> |
bea3348e | 39 | #include <linux/workqueue.h> |
114cf580 | 40 | #include <linux/dynamic_queue_limits.h> |
1da177e4 | 41 | |
b1b67dd4 | 42 | #include <linux/ethtool.h> |
a050c33f | 43 | #include <net/net_namespace.h> |
cf85d08f | 44 | #include <net/dsa.h> |
7a6b6f51 | 45 | #ifdef CONFIG_DCB |
2f90b865 AD |
46 | #include <net/dcbnl.h> |
47 | #endif | |
5bc1421e | 48 | #include <net/netprio_cgroup.h> |
a050c33f | 49 | |
a59e2ecb | 50 | #include <linux/netdev_features.h> |
77162022 | 51 | #include <linux/neighbour.h> |
607ca46e | 52 | #include <uapi/linux/netdevice.h> |
61bd3857 | 53 | #include <uapi/linux/if_bonding.h> |
a59e2ecb | 54 | |
115c1d6e | 55 | struct netpoll_info; |
313162d0 | 56 | struct device; |
c1f19b51 | 57 | struct phy_device; |
704232c2 JB |
58 | /* 802.11 specific */ |
59 | struct wireless_dev; | |
98a18b6f AA |
60 | /* 802.15.4 specific */ |
61 | struct wpan_dev; | |
03c57747 | 62 | struct mpls_dev; |
1da177e4 | 63 | |
f629d208 JP |
64 | void netdev_set_default_ethtool_ops(struct net_device *dev, |
65 | const struct ethtool_ops *ops); | |
d07d7507 | 66 | |
9a1654ba JP |
67 | /* Backlog congestion levels */ |
68 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
69 | #define NET_RX_DROP 1 /* packet dropped */ | |
70 | ||
572a9d7b PM |
71 | /* |
72 | * Transmit return codes: transmit return codes originate from three different | |
73 | * namespaces: | |
74 | * | |
75 | * - qdisc return codes | |
76 | * - driver transmit return codes | |
77 | * - errno values | |
78 | * | |
79 | * Drivers are allowed to return any one of those in their hard_start_xmit() | |
80 | * function. Real network devices commonly used with qdiscs should only return | |
81 | * the driver transmit return codes though - when qdiscs are used, the actual | |
82 | * transmission happens asynchronously, so the value is not propagated to | |
83 | * higher layers. Virtual network devices transmit synchronously, in this case | |
84 | * the driver transmit return codes are consumed by dev_queue_xmit(), all | |
85 | * others are propagated to higher layers. | |
86 | */ | |
87 | ||
88 | /* qdisc ->enqueue() return codes. */ | |
89 | #define NET_XMIT_SUCCESS 0x00 | |
9a1654ba JP |
90 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
91 | #define NET_XMIT_CN 0x02 /* congestion notification */ | |
92 | #define NET_XMIT_POLICED 0x03 /* skb is shot by police */ | |
93 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ | |
1da177e4 | 94 | |
b9df3cb8 GR |
95 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
96 | * indicates that the device will soon be dropping packets, or already drops | |
97 | * some packets of the same priority; prompting us to send less aggressively. */ | |
572a9d7b | 98 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
1da177e4 LT |
99 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
100 | ||
dc1f8bf6 | 101 | /* Driver transmit return codes */ |
9a1654ba | 102 | #define NETDEV_TX_MASK 0xf0 |
572a9d7b | 103 | |
dc1f8bf6 | 104 | enum netdev_tx { |
572a9d7b | 105 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
9a1654ba JP |
106 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
107 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ | |
108 | NETDEV_TX_LOCKED = 0x20, /* driver tx lock was already taken */ | |
dc1f8bf6 SH |
109 | }; |
110 | typedef enum netdev_tx netdev_tx_t; | |
111 | ||
9a1654ba JP |
112 | /* |
113 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; | |
114 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. | |
115 | */ | |
116 | static inline bool dev_xmit_complete(int rc) | |
117 | { | |
118 | /* | |
119 | * Positive cases with an skb consumed by a driver: | |
120 | * - successful transmission (rc == NETDEV_TX_OK) | |
121 | * - error while transmitting (rc < 0) | |
122 | * - error while queueing to a different device (rc & NET_XMIT_MASK) | |
123 | */ | |
124 | if (likely(rc < NET_XMIT_MASK)) | |
125 | return true; | |
126 | ||
127 | return false; | |
128 | } | |
129 | ||
1da177e4 LT |
130 | /* |
131 | * Compute the worst case header length according to the protocols | |
132 | * used. | |
133 | */ | |
fe2918b0 | 134 | |
d11ead75 | 135 | #if defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) |
8388e3da DM |
136 | # if defined(CONFIG_MAC80211_MESH) |
137 | # define LL_MAX_HEADER 128 | |
138 | # else | |
139 | # define LL_MAX_HEADER 96 | |
140 | # endif | |
1da177e4 | 141 | #else |
8388e3da | 142 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
143 | #endif |
144 | ||
d11ead75 BH |
145 | #if !IS_ENABLED(CONFIG_NET_IPIP) && !IS_ENABLED(CONFIG_NET_IPGRE) && \ |
146 | !IS_ENABLED(CONFIG_IPV6_SIT) && !IS_ENABLED(CONFIG_IPV6_TUNNEL) | |
1da177e4 LT |
147 | #define MAX_HEADER LL_MAX_HEADER |
148 | #else | |
149 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
150 | #endif | |
151 | ||
152 | /* | |
be1f3c2c BH |
153 | * Old network device statistics. Fields are native words |
154 | * (unsigned long) so they can be read and written atomically. | |
1da177e4 | 155 | */ |
fe2918b0 | 156 | |
d94d9fee | 157 | struct net_device_stats { |
3cfde79c BH |
158 | unsigned long rx_packets; |
159 | unsigned long tx_packets; | |
160 | unsigned long rx_bytes; | |
161 | unsigned long tx_bytes; | |
162 | unsigned long rx_errors; | |
163 | unsigned long tx_errors; | |
164 | unsigned long rx_dropped; | |
165 | unsigned long tx_dropped; | |
166 | unsigned long multicast; | |
1da177e4 | 167 | unsigned long collisions; |
1da177e4 | 168 | unsigned long rx_length_errors; |
3cfde79c BH |
169 | unsigned long rx_over_errors; |
170 | unsigned long rx_crc_errors; | |
171 | unsigned long rx_frame_errors; | |
172 | unsigned long rx_fifo_errors; | |
173 | unsigned long rx_missed_errors; | |
1da177e4 LT |
174 | unsigned long tx_aborted_errors; |
175 | unsigned long tx_carrier_errors; | |
176 | unsigned long tx_fifo_errors; | |
177 | unsigned long tx_heartbeat_errors; | |
178 | unsigned long tx_window_errors; | |
1da177e4 LT |
179 | unsigned long rx_compressed; |
180 | unsigned long tx_compressed; | |
181 | }; | |
182 | ||
1da177e4 LT |
183 | |
184 | #include <linux/cache.h> | |
185 | #include <linux/skbuff.h> | |
186 | ||
adc9300e | 187 | #ifdef CONFIG_RPS |
c5905afb IM |
188 | #include <linux/static_key.h> |
189 | extern struct static_key rps_needed; | |
adc9300e ED |
190 | #endif |
191 | ||
1da177e4 LT |
192 | struct neighbour; |
193 | struct neigh_parms; | |
194 | struct sk_buff; | |
195 | ||
f001fde5 JP |
196 | struct netdev_hw_addr { |
197 | struct list_head list; | |
198 | unsigned char addr[MAX_ADDR_LEN]; | |
199 | unsigned char type; | |
ccffad25 JP |
200 | #define NETDEV_HW_ADDR_T_LAN 1 |
201 | #define NETDEV_HW_ADDR_T_SAN 2 | |
202 | #define NETDEV_HW_ADDR_T_SLAVE 3 | |
203 | #define NETDEV_HW_ADDR_T_UNICAST 4 | |
22bedad3 | 204 | #define NETDEV_HW_ADDR_T_MULTICAST 5 |
22bedad3 | 205 | bool global_use; |
4cd729b0 | 206 | int sync_cnt; |
8f8f103d | 207 | int refcount; |
4543fbef | 208 | int synced; |
f001fde5 JP |
209 | struct rcu_head rcu_head; |
210 | }; | |
211 | ||
31278e71 JP |
212 | struct netdev_hw_addr_list { |
213 | struct list_head list; | |
214 | int count; | |
215 | }; | |
216 | ||
22bedad3 JP |
217 | #define netdev_hw_addr_list_count(l) ((l)->count) |
218 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) | |
219 | #define netdev_hw_addr_list_for_each(ha, l) \ | |
220 | list_for_each_entry(ha, &(l)->list, list) | |
32e7bfc4 | 221 | |
22bedad3 JP |
222 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
223 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) | |
224 | #define netdev_for_each_uc_addr(ha, dev) \ | |
225 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) | |
6683ece3 | 226 | |
22bedad3 JP |
227 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
228 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) | |
18e225f2 | 229 | #define netdev_for_each_mc_addr(ha, dev) \ |
22bedad3 | 230 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
6683ece3 | 231 | |
d94d9fee | 232 | struct hh_cache { |
f6b72b62 | 233 | u16 hh_len; |
5c25f686 | 234 | u16 __pad; |
3644f0ce | 235 | seqlock_t hh_lock; |
1da177e4 LT |
236 | |
237 | /* cached hardware header; allow for machine alignment needs. */ | |
238 | #define HH_DATA_MOD 16 | |
239 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 240 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
241 | #define HH_DATA_ALIGN(__len) \ |
242 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
243 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
244 | }; | |
245 | ||
246 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. | |
247 | * Alternative is: | |
248 | * dev->hard_header_len ? (dev->hard_header_len + | |
249 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
250 | * | |
251 | * We could use other alignment values, but we must maintain the | |
252 | * relationship HH alignment <= LL alignment. | |
253 | */ | |
254 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 255 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 256 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 | 257 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 258 | |
3b04ddde SH |
259 | struct header_ops { |
260 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
261 | unsigned short type, const void *daddr, | |
95c96174 | 262 | const void *saddr, unsigned int len); |
3b04ddde | 263 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); |
e69dd336 | 264 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh, __be16 type); |
3b04ddde SH |
265 | void (*cache_update)(struct hh_cache *hh, |
266 | const struct net_device *dev, | |
267 | const unsigned char *haddr); | |
268 | }; | |
269 | ||
1da177e4 LT |
270 | /* These flag bits are private to the generic network queueing |
271 | * layer, they may not be explicitly referenced by any other | |
272 | * code. | |
273 | */ | |
274 | ||
d94d9fee | 275 | enum netdev_state_t { |
1da177e4 LT |
276 | __LINK_STATE_START, |
277 | __LINK_STATE_PRESENT, | |
1da177e4 | 278 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
279 | __LINK_STATE_LINKWATCH_PENDING, |
280 | __LINK_STATE_DORMANT, | |
1da177e4 LT |
281 | }; |
282 | ||
283 | ||
284 | /* | |
285 | * This structure holds at boot time configured netdevice settings. They | |
fe2918b0 | 286 | * are then used in the device probing. |
1da177e4 LT |
287 | */ |
288 | struct netdev_boot_setup { | |
289 | char name[IFNAMSIZ]; | |
290 | struct ifmap map; | |
291 | }; | |
292 | #define NETDEV_BOOT_SETUP_MAX 8 | |
293 | ||
f629d208 | 294 | int __init netdev_boot_setup(char *str); |
1da177e4 | 295 | |
bea3348e SH |
296 | /* |
297 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
298 | */ | |
299 | struct napi_struct { | |
300 | /* The poll_list must only be managed by the entity which | |
301 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
302 | * whoever atomically sets that bit can add this napi_struct | |
303 | * to the per-cpu poll_list, and whoever clears that bit | |
304 | * can remove from the list right before clearing the bit. | |
305 | */ | |
306 | struct list_head poll_list; | |
307 | ||
308 | unsigned long state; | |
309 | int weight; | |
404f7c9e | 310 | unsigned int gro_count; |
bea3348e SH |
311 | int (*poll)(struct napi_struct *, int); |
312 | #ifdef CONFIG_NETPOLL | |
313 | spinlock_t poll_lock; | |
314 | int poll_owner; | |
bea3348e | 315 | #endif |
5d38a079 | 316 | struct net_device *dev; |
d565b0a1 | 317 | struct sk_buff *gro_list; |
5d38a079 | 318 | struct sk_buff *skb; |
3b47d303 | 319 | struct hrtimer timer; |
404f7c9e | 320 | struct list_head dev_list; |
af12fa6e ET |
321 | struct hlist_node napi_hash_node; |
322 | unsigned int napi_id; | |
bea3348e SH |
323 | }; |
324 | ||
d94d9fee | 325 | enum { |
bea3348e | 326 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
a0a46196 | 327 | NAPI_STATE_DISABLE, /* Disable pending */ |
7b363e44 | 328 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
d64b5e85 ED |
329 | NAPI_STATE_HASHED, /* In NAPI hash (busy polling possible) */ |
330 | NAPI_STATE_NO_BUSY_POLL,/* Do not add in napi_hash, no busy polling */ | |
bea3348e SH |
331 | }; |
332 | ||
5b252f0c | 333 | enum gro_result { |
d1c76af9 HX |
334 | GRO_MERGED, |
335 | GRO_MERGED_FREE, | |
336 | GRO_HELD, | |
337 | GRO_NORMAL, | |
338 | GRO_DROP, | |
339 | }; | |
5b252f0c | 340 | typedef enum gro_result gro_result_t; |
d1c76af9 | 341 | |
8a4eb573 JP |
342 | /* |
343 | * enum rx_handler_result - Possible return values for rx_handlers. | |
344 | * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it | |
345 | * further. | |
346 | * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in | |
347 | * case skb->dev was changed by rx_handler. | |
348 | * @RX_HANDLER_EXACT: Force exact delivery, no wildcard. | |
349 | * @RX_HANDLER_PASS: Do nothing, passe the skb as if no rx_handler was called. | |
350 | * | |
351 | * rx_handlers are functions called from inside __netif_receive_skb(), to do | |
352 | * special processing of the skb, prior to delivery to protocol handlers. | |
353 | * | |
354 | * Currently, a net_device can only have a single rx_handler registered. Trying | |
355 | * to register a second rx_handler will return -EBUSY. | |
356 | * | |
357 | * To register a rx_handler on a net_device, use netdev_rx_handler_register(). | |
358 | * To unregister a rx_handler on a net_device, use | |
359 | * netdev_rx_handler_unregister(). | |
360 | * | |
361 | * Upon return, rx_handler is expected to tell __netif_receive_skb() what to | |
362 | * do with the skb. | |
363 | * | |
364 | * If the rx_handler consumed to skb in some way, it should return | |
365 | * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for | |
366 | * the skb to be delivered in some other ways. | |
367 | * | |
368 | * If the rx_handler changed skb->dev, to divert the skb to another | |
369 | * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the | |
370 | * new device will be called if it exists. | |
371 | * | |
372 | * If the rx_handler consider the skb should be ignored, it should return | |
373 | * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that | |
d93cf068 | 374 | * are registered on exact device (ptype->dev == skb->dev). |
8a4eb573 JP |
375 | * |
376 | * If the rx_handler didn't changed skb->dev, but want the skb to be normally | |
377 | * delivered, it should return RX_HANDLER_PASS. | |
378 | * | |
379 | * A device without a registered rx_handler will behave as if rx_handler | |
380 | * returned RX_HANDLER_PASS. | |
381 | */ | |
382 | ||
383 | enum rx_handler_result { | |
384 | RX_HANDLER_CONSUMED, | |
385 | RX_HANDLER_ANOTHER, | |
386 | RX_HANDLER_EXACT, | |
387 | RX_HANDLER_PASS, | |
388 | }; | |
389 | typedef enum rx_handler_result rx_handler_result_t; | |
390 | typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb); | |
ab95bfe0 | 391 | |
f629d208 | 392 | void __napi_schedule(struct napi_struct *n); |
bc9ad166 | 393 | void __napi_schedule_irqoff(struct napi_struct *n); |
bea3348e | 394 | |
4d29515f | 395 | static inline bool napi_disable_pending(struct napi_struct *n) |
a0a46196 DM |
396 | { |
397 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
398 | } | |
399 | ||
bea3348e SH |
400 | /** |
401 | * napi_schedule_prep - check if napi can be scheduled | |
402 | * @n: napi context | |
403 | * | |
404 | * Test if NAPI routine is already running, and if not mark | |
405 | * it as running. This is used as a condition variable | |
a0a46196 DM |
406 | * insure only one NAPI poll instance runs. We also make |
407 | * sure there is no pending NAPI disable. | |
bea3348e | 408 | */ |
4d29515f | 409 | static inline bool napi_schedule_prep(struct napi_struct *n) |
bea3348e | 410 | { |
a0a46196 DM |
411 | return !napi_disable_pending(n) && |
412 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); | |
bea3348e SH |
413 | } |
414 | ||
415 | /** | |
416 | * napi_schedule - schedule NAPI poll | |
417 | * @n: napi context | |
418 | * | |
419 | * Schedule NAPI poll routine to be called if it is not already | |
420 | * running. | |
421 | */ | |
422 | static inline void napi_schedule(struct napi_struct *n) | |
423 | { | |
424 | if (napi_schedule_prep(n)) | |
425 | __napi_schedule(n); | |
426 | } | |
427 | ||
bc9ad166 ED |
428 | /** |
429 | * napi_schedule_irqoff - schedule NAPI poll | |
430 | * @n: napi context | |
431 | * | |
432 | * Variant of napi_schedule(), assuming hard irqs are masked. | |
433 | */ | |
434 | static inline void napi_schedule_irqoff(struct napi_struct *n) | |
435 | { | |
436 | if (napi_schedule_prep(n)) | |
437 | __napi_schedule_irqoff(n); | |
438 | } | |
439 | ||
bfe13f54 | 440 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
4d29515f | 441 | static inline bool napi_reschedule(struct napi_struct *napi) |
bfe13f54 RD |
442 | { |
443 | if (napi_schedule_prep(napi)) { | |
444 | __napi_schedule(napi); | |
4d29515f | 445 | return true; |
bfe13f54 | 446 | } |
4d29515f | 447 | return false; |
bfe13f54 RD |
448 | } |
449 | ||
3b47d303 ED |
450 | void __napi_complete(struct napi_struct *n); |
451 | void napi_complete_done(struct napi_struct *n, int work_done); | |
bea3348e SH |
452 | /** |
453 | * napi_complete - NAPI processing complete | |
454 | * @n: napi context | |
455 | * | |
456 | * Mark NAPI processing as complete. | |
3b47d303 | 457 | * Consider using napi_complete_done() instead. |
bea3348e | 458 | */ |
3b47d303 ED |
459 | static inline void napi_complete(struct napi_struct *n) |
460 | { | |
461 | return napi_complete_done(n, 0); | |
462 | } | |
bea3348e | 463 | |
af12fa6e ET |
464 | /** |
465 | * napi_hash_add - add a NAPI to global hashtable | |
466 | * @napi: napi context | |
467 | * | |
468 | * generate a new napi_id and store a @napi under it in napi_hash | |
93d05d4a ED |
469 | * Used for busy polling (CONFIG_NET_RX_BUSY_POLL) |
470 | * Note: This is normally automatically done from netif_napi_add(), | |
471 | * so might disappear in a future linux version. | |
af12fa6e | 472 | */ |
f629d208 | 473 | void napi_hash_add(struct napi_struct *napi); |
af12fa6e ET |
474 | |
475 | /** | |
476 | * napi_hash_del - remove a NAPI from global table | |
477 | * @napi: napi context | |
478 | * | |
479 | * Warning: caller must observe rcu grace period | |
34cbe27e ED |
480 | * before freeing memory containing @napi, if |
481 | * this function returns true. | |
93d05d4a ED |
482 | * Note: core networking stack automatically calls it |
483 | * from netif_napi_del() | |
484 | * Drivers might want to call this helper to combine all | |
485 | * the needed rcu grace periods into a single one. | |
af12fa6e | 486 | */ |
34cbe27e | 487 | bool napi_hash_del(struct napi_struct *napi); |
af12fa6e | 488 | |
bea3348e SH |
489 | /** |
490 | * napi_disable - prevent NAPI from scheduling | |
491 | * @n: napi context | |
492 | * | |
493 | * Stop NAPI from being scheduled on this context. | |
494 | * Waits till any outstanding processing completes. | |
495 | */ | |
3b47d303 | 496 | void napi_disable(struct napi_struct *n); |
bea3348e SH |
497 | |
498 | /** | |
499 | * napi_enable - enable NAPI scheduling | |
500 | * @n: napi context | |
501 | * | |
502 | * Resume NAPI from being scheduled on this context. | |
503 | * Must be paired with napi_disable. | |
504 | */ | |
505 | static inline void napi_enable(struct napi_struct *n) | |
506 | { | |
507 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
4e857c58 | 508 | smp_mb__before_atomic(); |
bea3348e | 509 | clear_bit(NAPI_STATE_SCHED, &n->state); |
2d8bff12 | 510 | clear_bit(NAPI_STATE_NPSVC, &n->state); |
bea3348e SH |
511 | } |
512 | ||
c264c3de SH |
513 | #ifdef CONFIG_SMP |
514 | /** | |
515 | * napi_synchronize - wait until NAPI is not running | |
516 | * @n: napi context | |
517 | * | |
518 | * Wait until NAPI is done being scheduled on this context. | |
519 | * Waits till any outstanding processing completes but | |
520 | * does not disable future activations. | |
521 | */ | |
522 | static inline void napi_synchronize(const struct napi_struct *n) | |
523 | { | |
524 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
525 | msleep(1); | |
526 | } | |
527 | #else | |
528 | # define napi_synchronize(n) barrier() | |
529 | #endif | |
530 | ||
d94d9fee | 531 | enum netdev_queue_state_t { |
73466498 TH |
532 | __QUEUE_STATE_DRV_XOFF, |
533 | __QUEUE_STATE_STACK_XOFF, | |
c3f26a26 | 534 | __QUEUE_STATE_FROZEN, |
79d16385 | 535 | }; |
8e2f1a63 DB |
536 | |
537 | #define QUEUE_STATE_DRV_XOFF (1 << __QUEUE_STATE_DRV_XOFF) | |
538 | #define QUEUE_STATE_STACK_XOFF (1 << __QUEUE_STATE_STACK_XOFF) | |
539 | #define QUEUE_STATE_FROZEN (1 << __QUEUE_STATE_FROZEN) | |
540 | ||
541 | #define QUEUE_STATE_ANY_XOFF (QUEUE_STATE_DRV_XOFF | QUEUE_STATE_STACK_XOFF) | |
542 | #define QUEUE_STATE_ANY_XOFF_OR_FROZEN (QUEUE_STATE_ANY_XOFF | \ | |
543 | QUEUE_STATE_FROZEN) | |
544 | #define QUEUE_STATE_DRV_XOFF_OR_FROZEN (QUEUE_STATE_DRV_XOFF | \ | |
545 | QUEUE_STATE_FROZEN) | |
546 | ||
73466498 TH |
547 | /* |
548 | * __QUEUE_STATE_DRV_XOFF is used by drivers to stop the transmit queue. The | |
549 | * netif_tx_* functions below are used to manipulate this flag. The | |
550 | * __QUEUE_STATE_STACK_XOFF flag is used by the stack to stop the transmit | |
551 | * queue independently. The netif_xmit_*stopped functions below are called | |
552 | * to check if the queue has been stopped by the driver or stack (either | |
553 | * of the XOFF bits are set in the state). Drivers should not need to call | |
554 | * netif_xmit*stopped functions, they should only be using netif_tx_*. | |
555 | */ | |
79d16385 | 556 | |
bb949fbd | 557 | struct netdev_queue { |
6a321cb3 ED |
558 | /* |
559 | * read mostly part | |
560 | */ | |
bb949fbd | 561 | struct net_device *dev; |
46e5da40 | 562 | struct Qdisc __rcu *qdisc; |
b0e1e646 | 563 | struct Qdisc *qdisc_sleeping; |
ccf5ff69 | 564 | #ifdef CONFIG_SYSFS |
1d24eb48 TH |
565 | struct kobject kobj; |
566 | #endif | |
f2cd2d3e ED |
567 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
568 | int numa_node; | |
569 | #endif | |
6a321cb3 ED |
570 | /* |
571 | * write mostly part | |
572 | */ | |
573 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
574 | int xmit_lock_owner; | |
9d21493b ED |
575 | /* |
576 | * please use this field instead of dev->trans_start | |
577 | */ | |
578 | unsigned long trans_start; | |
ccf5ff69 | 579 | |
580 | /* | |
581 | * Number of TX timeouts for this queue | |
582 | * (/sys/class/net/DEV/Q/trans_timeout) | |
583 | */ | |
584 | unsigned long trans_timeout; | |
114cf580 TH |
585 | |
586 | unsigned long state; | |
587 | ||
588 | #ifdef CONFIG_BQL | |
589 | struct dql dql; | |
590 | #endif | |
822b3b2e | 591 | unsigned long tx_maxrate; |
e8a0464c | 592 | } ____cacheline_aligned_in_smp; |
bb949fbd | 593 | |
f2cd2d3e ED |
594 | static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) |
595 | { | |
596 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
597 | return q->numa_node; | |
598 | #else | |
b236da69 | 599 | return NUMA_NO_NODE; |
f2cd2d3e ED |
600 | #endif |
601 | } | |
602 | ||
603 | static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node) | |
604 | { | |
605 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
606 | q->numa_node = node; | |
607 | #endif | |
608 | } | |
609 | ||
df334545 | 610 | #ifdef CONFIG_RPS |
0a9627f2 TH |
611 | /* |
612 | * This structure holds an RPS map which can be of variable length. The | |
613 | * map is an array of CPUs. | |
614 | */ | |
615 | struct rps_map { | |
616 | unsigned int len; | |
617 | struct rcu_head rcu; | |
618 | u16 cpus[0]; | |
619 | }; | |
60b778ce | 620 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + ((_num) * sizeof(u16))) |
0a9627f2 | 621 | |
fec5e652 | 622 | /* |
c445477d BH |
623 | * The rps_dev_flow structure contains the mapping of a flow to a CPU, the |
624 | * tail pointer for that CPU's input queue at the time of last enqueue, and | |
625 | * a hardware filter index. | |
fec5e652 TH |
626 | */ |
627 | struct rps_dev_flow { | |
628 | u16 cpu; | |
c445477d | 629 | u16 filter; |
fec5e652 TH |
630 | unsigned int last_qtail; |
631 | }; | |
c445477d | 632 | #define RPS_NO_FILTER 0xffff |
fec5e652 TH |
633 | |
634 | /* | |
635 | * The rps_dev_flow_table structure contains a table of flow mappings. | |
636 | */ | |
637 | struct rps_dev_flow_table { | |
638 | unsigned int mask; | |
639 | struct rcu_head rcu; | |
fec5e652 TH |
640 | struct rps_dev_flow flows[0]; |
641 | }; | |
642 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ | |
60b778ce | 643 | ((_num) * sizeof(struct rps_dev_flow))) |
fec5e652 TH |
644 | |
645 | /* | |
646 | * The rps_sock_flow_table contains mappings of flows to the last CPU | |
647 | * on which they were processed by the application (set in recvmsg). | |
567e4b79 ED |
648 | * Each entry is a 32bit value. Upper part is the high order bits |
649 | * of flow hash, lower part is cpu number. | |
650 | * rps_cpu_mask is used to partition the space, depending on number of | |
651 | * possible cpus : rps_cpu_mask = roundup_pow_of_two(nr_cpu_ids) - 1 | |
652 | * For example, if 64 cpus are possible, rps_cpu_mask = 0x3f, | |
653 | * meaning we use 32-6=26 bits for the hash. | |
fec5e652 TH |
654 | */ |
655 | struct rps_sock_flow_table { | |
567e4b79 | 656 | u32 mask; |
93c1af6c ED |
657 | |
658 | u32 ents[0] ____cacheline_aligned_in_smp; | |
fec5e652 | 659 | }; |
567e4b79 | 660 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (offsetof(struct rps_sock_flow_table, ents[_num])) |
fec5e652 TH |
661 | |
662 | #define RPS_NO_CPU 0xffff | |
663 | ||
567e4b79 ED |
664 | extern u32 rps_cpu_mask; |
665 | extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; | |
666 | ||
fec5e652 TH |
667 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, |
668 | u32 hash) | |
669 | { | |
670 | if (table && hash) { | |
567e4b79 ED |
671 | unsigned int index = hash & table->mask; |
672 | u32 val = hash & ~rps_cpu_mask; | |
fec5e652 TH |
673 | |
674 | /* We only give a hint, preemption can change cpu under us */ | |
567e4b79 | 675 | val |= raw_smp_processor_id(); |
fec5e652 | 676 | |
567e4b79 ED |
677 | if (table->ents[index] != val) |
678 | table->ents[index] = val; | |
fec5e652 TH |
679 | } |
680 | } | |
681 | ||
c445477d | 682 | #ifdef CONFIG_RFS_ACCEL |
f629d208 JP |
683 | bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, u32 flow_id, |
684 | u16 filter_id); | |
c445477d | 685 | #endif |
a953be53 | 686 | #endif /* CONFIG_RPS */ |
c445477d | 687 | |
0a9627f2 TH |
688 | /* This structure contains an instance of an RX queue. */ |
689 | struct netdev_rx_queue { | |
a953be53 | 690 | #ifdef CONFIG_RPS |
6e3f7faf ED |
691 | struct rps_map __rcu *rps_map; |
692 | struct rps_dev_flow_table __rcu *rps_flow_table; | |
a953be53 | 693 | #endif |
6e3f7faf | 694 | struct kobject kobj; |
fe822240 | 695 | struct net_device *dev; |
0a9627f2 | 696 | } ____cacheline_aligned_in_smp; |
a953be53 MD |
697 | |
698 | /* | |
699 | * RX queue sysfs structures and functions. | |
700 | */ | |
701 | struct rx_queue_attribute { | |
702 | struct attribute attr; | |
703 | ssize_t (*show)(struct netdev_rx_queue *queue, | |
704 | struct rx_queue_attribute *attr, char *buf); | |
705 | ssize_t (*store)(struct netdev_rx_queue *queue, | |
706 | struct rx_queue_attribute *attr, const char *buf, size_t len); | |
707 | }; | |
d314774c | 708 | |
bf264145 TH |
709 | #ifdef CONFIG_XPS |
710 | /* | |
711 | * This structure holds an XPS map which can be of variable length. The | |
712 | * map is an array of queues. | |
713 | */ | |
714 | struct xps_map { | |
715 | unsigned int len; | |
716 | unsigned int alloc_len; | |
717 | struct rcu_head rcu; | |
718 | u16 queues[0]; | |
719 | }; | |
60b778ce | 720 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + ((_num) * sizeof(u16))) |
c59f419b HD |
721 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_ALIGN(offsetof(struct xps_map, queues[1])) \ |
722 | - sizeof(struct xps_map)) / sizeof(u16)) | |
bf264145 TH |
723 | |
724 | /* | |
725 | * This structure holds all XPS maps for device. Maps are indexed by CPU. | |
726 | */ | |
727 | struct xps_dev_maps { | |
728 | struct rcu_head rcu; | |
a4177869 | 729 | struct xps_map __rcu *cpu_map[0]; |
bf264145 TH |
730 | }; |
731 | #define XPS_DEV_MAPS_SIZE (sizeof(struct xps_dev_maps) + \ | |
732 | (nr_cpu_ids * sizeof(struct xps_map *))) | |
733 | #endif /* CONFIG_XPS */ | |
734 | ||
4f57c087 JF |
735 | #define TC_MAX_QUEUE 16 |
736 | #define TC_BITMASK 15 | |
737 | /* HW offloaded queuing disciplines txq count and offset maps */ | |
738 | struct netdev_tc_txq { | |
739 | u16 count; | |
740 | u16 offset; | |
741 | }; | |
742 | ||
68bad94e NP |
743 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
744 | /* | |
745 | * This structure is to hold information about the device | |
746 | * configured to run FCoE protocol stack. | |
747 | */ | |
748 | struct netdev_fcoe_hbainfo { | |
749 | char manufacturer[64]; | |
750 | char serial_number[64]; | |
751 | char hardware_version[64]; | |
752 | char driver_version[64]; | |
753 | char optionrom_version[64]; | |
754 | char firmware_version[64]; | |
755 | char model[256]; | |
756 | char model_description[256]; | |
757 | }; | |
758 | #endif | |
759 | ||
02637fce | 760 | #define MAX_PHYS_ITEM_ID_LEN 32 |
66b52b0d | 761 | |
02637fce JP |
762 | /* This structure holds a unique identifier to identify some |
763 | * physical item (port for example) used by a netdevice. | |
66b52b0d | 764 | */ |
02637fce JP |
765 | struct netdev_phys_item_id { |
766 | unsigned char id[MAX_PHYS_ITEM_ID_LEN]; | |
66b52b0d JP |
767 | unsigned char id_len; |
768 | }; | |
769 | ||
d754f98b SF |
770 | static inline bool netdev_phys_item_id_same(struct netdev_phys_item_id *a, |
771 | struct netdev_phys_item_id *b) | |
772 | { | |
773 | return a->id_len == b->id_len && | |
774 | memcmp(a->id, b->id, a->id_len) == 0; | |
775 | } | |
776 | ||
99932d4f DB |
777 | typedef u16 (*select_queue_fallback_t)(struct net_device *dev, |
778 | struct sk_buff *skb); | |
779 | ||
d314774c SH |
780 | /* |
781 | * This structure defines the management hooks for network devices. | |
00829823 SH |
782 | * The following hooks can be defined; unless noted otherwise, they are |
783 | * optional and can be filled with a null pointer. | |
d314774c SH |
784 | * |
785 | * int (*ndo_init)(struct net_device *dev); | |
786 | * This function is called once when network device is registered. | |
787 | * The network device can use this to any late stage initializaton | |
788 | * or semantic validattion. It can fail with an error code which will | |
789 | * be propogated back to register_netdev | |
790 | * | |
791 | * void (*ndo_uninit)(struct net_device *dev); | |
792 | * This function is called when device is unregistered or when registration | |
793 | * fails. It is not called if init fails. | |
794 | * | |
795 | * int (*ndo_open)(struct net_device *dev); | |
796 | * This function is called when network device transistions to the up | |
797 | * state. | |
798 | * | |
799 | * int (*ndo_stop)(struct net_device *dev); | |
800 | * This function is called when network device transistions to the down | |
801 | * state. | |
802 | * | |
dc1f8bf6 SH |
803 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
804 | * struct net_device *dev); | |
00829823 | 805 | * Called when a packet needs to be transmitted. |
e79d8429 RR |
806 | * Returns NETDEV_TX_OK. Can return NETDEV_TX_BUSY, but you should stop |
807 | * the queue before that can happen; it's for obsolete devices and weird | |
808 | * corner cases, but the stack really does a non-trivial amount | |
809 | * of useless work if you return NETDEV_TX_BUSY. | |
dc1f8bf6 | 810 | * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX) |
00829823 SH |
811 | * Required can not be NULL. |
812 | * | |
f663dd9a | 813 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb, |
99932d4f | 814 | * void *accel_priv, select_queue_fallback_t fallback); |
00829823 SH |
815 | * Called to decide which queue to when device supports multiple |
816 | * transmit queues. | |
817 | * | |
d314774c SH |
818 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
819 | * This function is called to allow device receiver to make | |
820 | * changes to configuration when multicast or promiscious is enabled. | |
821 | * | |
822 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
823 | * This function is called device changes address list filtering. | |
01789349 JP |
824 | * If driver handles unicast address filtering, it should set |
825 | * IFF_UNICAST_FLT to its priv_flags. | |
d314774c SH |
826 | * |
827 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
828 | * This function is called when the Media Access Control address | |
37b607c5 | 829 | * needs to be changed. If this interface is not defined, the |
d314774c SH |
830 | * mac address can not be changed. |
831 | * | |
832 | * int (*ndo_validate_addr)(struct net_device *dev); | |
833 | * Test if Media Access Control address is valid for the device. | |
834 | * | |
835 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
836 | * Called when a user request an ioctl which can't be handled by | |
837 | * the generic interface code. If not defined ioctl's return | |
838 | * not supported error code. | |
839 | * | |
840 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); | |
841 | * Used to set network devices bus interface parameters. This interface | |
842 | * is retained for legacy reason, new devices should use the bus | |
843 | * interface (PCI) for low level management. | |
844 | * | |
845 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
846 | * Called when a user wants to change the Maximum Transfer Unit | |
847 | * of a device. If not defined, any request to change MTU will | |
848 | * will return an error. | |
849 | * | |
00829823 | 850 | * void (*ndo_tx_timeout)(struct net_device *dev); |
d314774c SH |
851 | * Callback uses when the transmitter has not made any progress |
852 | * for dev->watchdog ticks. | |
853 | * | |
3cfde79c | 854 | * struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
28172739 | 855 | * struct rtnl_link_stats64 *storage); |
d308e38f | 856 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
d314774c | 857 | * Called when a user wants to get the network device usage |
be1f3c2c | 858 | * statistics. Drivers must do one of the following: |
3cfde79c BH |
859 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
860 | * rtnl_link_stats64 structure passed by the caller. | |
82695d9b | 861 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
be1f3c2c BH |
862 | * (which should normally be dev->stats) and return a pointer to |
863 | * it. The structure may be changed asynchronously only if each | |
864 | * field is written atomically. | |
865 | * 3. Update dev->stats asynchronously and atomically, and define | |
866 | * neither operation. | |
d314774c | 867 | * |
5d632cb7 | 868 | * int (*ndo_vlan_rx_add_vid)(struct net_device *dev, __be16 proto, u16 vid); |
80d5c368 PM |
869 | * If device support VLAN filtering this function is called when a |
870 | * VLAN id is registered. | |
d314774c | 871 | * |
5d632cb7 | 872 | * int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, __be16 proto, u16 vid); |
80d5c368 PM |
873 | * If device support VLAN filtering this function is called when a |
874 | * VLAN id is unregistered. | |
d314774c SH |
875 | * |
876 | * void (*ndo_poll_controller)(struct net_device *dev); | |
95c26df8 WM |
877 | * |
878 | * SR-IOV management functions. | |
879 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); | |
880 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos); | |
ed616689 SC |
881 | * int (*ndo_set_vf_rate)(struct net_device *dev, int vf, int min_tx_rate, |
882 | * int max_tx_rate); | |
5f8444a3 | 883 | * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting); |
dd461d6a | 884 | * int (*ndo_set_vf_trust)(struct net_device *dev, int vf, bool setting); |
95c26df8 WM |
885 | * int (*ndo_get_vf_config)(struct net_device *dev, |
886 | * int vf, struct ifla_vf_info *ivf); | |
1d8faf48 | 887 | * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state); |
57b61080 SF |
888 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
889 | * struct nlattr *port[]); | |
01a3d796 VZ |
890 | * |
891 | * Enable or disable the VF ability to query its RSS Redirection Table and | |
892 | * Hash Key. This is needed since on some devices VF share this information | |
893 | * with PF and querying it may adduce a theoretical security risk. | |
894 | * int (*ndo_set_vf_rss_query_en)(struct net_device *dev, int vf, bool setting); | |
57b61080 | 895 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); |
4f57c087 JF |
896 | * int (*ndo_setup_tc)(struct net_device *dev, u8 tc) |
897 | * Called to setup 'tc' number of traffic classes in the net device. This | |
898 | * is always called from the stack with the rtnl lock held and netif tx | |
899 | * queues stopped. This allows the netdevice to perform queue management | |
900 | * safely. | |
c445477d | 901 | * |
e9bce845 YZ |
902 | * Fiber Channel over Ethernet (FCoE) offload functions. |
903 | * int (*ndo_fcoe_enable)(struct net_device *dev); | |
904 | * Called when the FCoE protocol stack wants to start using LLD for FCoE | |
905 | * so the underlying device can perform whatever needed configuration or | |
906 | * initialization to support acceleration of FCoE traffic. | |
907 | * | |
908 | * int (*ndo_fcoe_disable)(struct net_device *dev); | |
909 | * Called when the FCoE protocol stack wants to stop using LLD for FCoE | |
910 | * so the underlying device can perform whatever needed clean-ups to | |
911 | * stop supporting acceleration of FCoE traffic. | |
912 | * | |
913 | * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid, | |
914 | * struct scatterlist *sgl, unsigned int sgc); | |
915 | * Called when the FCoE Initiator wants to initialize an I/O that | |
916 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
917 | * perform necessary setup and returns 1 to indicate the device is set up | |
918 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
919 | * | |
920 | * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); | |
921 | * Called when the FCoE Initiator/Target is done with the DDPed I/O as | |
922 | * indicated by the FC exchange id 'xid', so the underlying device can | |
923 | * clean up and reuse resources for later DDP requests. | |
924 | * | |
925 | * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid, | |
926 | * struct scatterlist *sgl, unsigned int sgc); | |
927 | * Called when the FCoE Target wants to initialize an I/O that | |
928 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
929 | * perform necessary setup and returns 1 to indicate the device is set up | |
930 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
931 | * | |
68bad94e NP |
932 | * int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
933 | * struct netdev_fcoe_hbainfo *hbainfo); | |
934 | * Called when the FCoE Protocol stack wants information on the underlying | |
935 | * device. This information is utilized by the FCoE protocol stack to | |
936 | * register attributes with Fiber Channel management service as per the | |
937 | * FC-GS Fabric Device Management Information(FDMI) specification. | |
938 | * | |
e9bce845 YZ |
939 | * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); |
940 | * Called when the underlying device wants to override default World Wide | |
941 | * Name (WWN) generation mechanism in FCoE protocol stack to pass its own | |
942 | * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE | |
943 | * protocol stack to use. | |
944 | * | |
c445477d BH |
945 | * RFS acceleration. |
946 | * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, | |
947 | * u16 rxq_index, u32 flow_id); | |
948 | * Set hardware filter for RFS. rxq_index is the target queue index; | |
949 | * flow_id is a flow ID to be passed to rps_may_expire_flow() later. | |
950 | * Return the filter ID on success, or a negative error code. | |
fbaec0ea | 951 | * |
8b98a70c | 952 | * Slave management functions (for bridge, bonding, etc). |
fbaec0ea JP |
953 | * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); |
954 | * Called to make another netdev an underling. | |
955 | * | |
956 | * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); | |
957 | * Called to release previously enslaved netdev. | |
5455c699 MM |
958 | * |
959 | * Feature/offload setting functions. | |
c8f44aff MM |
960 | * netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
961 | * netdev_features_t features); | |
5455c699 MM |
962 | * Adjusts the requested feature flags according to device-specific |
963 | * constraints, and returns the resulting flags. Must not modify | |
964 | * the device state. | |
965 | * | |
c8f44aff | 966 | * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); |
5455c699 MM |
967 | * Called to update device configuration to new features. Passed |
968 | * feature set might be less than what was returned by ndo_fix_features()). | |
969 | * Must return >0 or -errno if it changed dev->features itself. | |
970 | * | |
edc7d573 | 971 | * int (*ndo_fdb_add)(struct ndmsg *ndm, struct nlattr *tb[], |
972 | * struct net_device *dev, | |
f6f6424b | 973 | * const unsigned char *addr, u16 vid, u16 flags) |
77162022 | 974 | * Adds an FDB entry to dev for addr. |
1690be63 VY |
975 | * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[], |
976 | * struct net_device *dev, | |
f6f6424b | 977 | * const unsigned char *addr, u16 vid) |
77162022 JF |
978 | * Deletes the FDB entry from dev coresponding to addr. |
979 | * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb, | |
5d5eacb3 JHS |
980 | * struct net_device *dev, struct net_device *filter_dev, |
981 | * int idx) | |
77162022 JF |
982 | * Used to add FDB entries to dump requests. Implementers should add |
983 | * entries to skb and update idx with the number of entries. | |
e5a55a89 | 984 | * |
ad41faa8 ND |
985 | * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh, |
986 | * u16 flags) | |
e5a55a89 | 987 | * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, |
46c264da ND |
988 | * struct net_device *dev, u32 filter_mask, |
989 | * int nlflags) | |
ad41faa8 ND |
990 | * int (*ndo_bridge_dellink)(struct net_device *dev, struct nlmsghdr *nlh, |
991 | * u16 flags); | |
4bf84c35 JP |
992 | * |
993 | * int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier); | |
994 | * Called to change device carrier. Soft-devices (like dummy, team, etc) | |
995 | * which do not represent real hardware may define this to allow their | |
996 | * userspace components to manage their virtual carrier state. Devices | |
997 | * that determine carrier state from physical hardware properties (eg | |
998 | * network cables) or protocol-dependent mechanisms (eg | |
999 | * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function. | |
66b52b0d JP |
1000 | * |
1001 | * int (*ndo_get_phys_port_id)(struct net_device *dev, | |
02637fce | 1002 | * struct netdev_phys_item_id *ppid); |
66b52b0d JP |
1003 | * Called to get ID of physical port of this device. If driver does |
1004 | * not implement this, it is assumed that the hw is not able to have | |
1005 | * multiple net devices on single physical port. | |
53cf5275 JG |
1006 | * |
1007 | * void (*ndo_add_vxlan_port)(struct net_device *dev, | |
35e42379 | 1008 | * sa_family_t sa_family, __be16 port); |
53cf5275 JG |
1009 | * Called by vxlan to notiy a driver about the UDP port and socket |
1010 | * address family that vxlan is listnening to. It is called only when | |
1011 | * a new port starts listening. The operation is protected by the | |
1012 | * vxlan_net->sock_lock. | |
1013 | * | |
1014 | * void (*ndo_del_vxlan_port)(struct net_device *dev, | |
35e42379 | 1015 | * sa_family_t sa_family, __be16 port); |
53cf5275 JG |
1016 | * Called by vxlan to notify the driver about a UDP port and socket |
1017 | * address family that vxlan is not listening to anymore. The operation | |
1018 | * is protected by the vxlan_net->sock_lock. | |
a6cc0cfa JF |
1019 | * |
1020 | * void* (*ndo_dfwd_add_station)(struct net_device *pdev, | |
1021 | * struct net_device *dev) | |
1022 | * Called by upper layer devices to accelerate switching or other | |
1023 | * station functionality into hardware. 'pdev is the lowerdev | |
1024 | * to use for the offload and 'dev' is the net device that will | |
1025 | * back the offload. Returns a pointer to the private structure | |
1026 | * the upper layer will maintain. | |
1027 | * void (*ndo_dfwd_del_station)(struct net_device *pdev, void *priv) | |
1028 | * Called by upper layer device to delete the station created | |
1029 | * by 'ndo_dfwd_add_station'. 'pdev' is the net device backing | |
1030 | * the station and priv is the structure returned by the add | |
1031 | * operation. | |
1032 | * netdev_tx_t (*ndo_dfwd_start_xmit)(struct sk_buff *skb, | |
1033 | * struct net_device *dev, | |
1034 | * void *priv); | |
1035 | * Callback to use for xmit over the accelerated station. This | |
1036 | * is used in place of ndo_start_xmit on accelerated net | |
1037 | * devices. | |
5f35227e JG |
1038 | * netdev_features_t (*ndo_features_check) (struct sk_buff *skb, |
1039 | * struct net_device *dev | |
1040 | * netdev_features_t features); | |
04ffcb25 | 1041 | * Called by core transmit path to determine if device is capable of |
5f35227e JG |
1042 | * performing offload operations on a given packet. This is to give |
1043 | * the device an opportunity to implement any restrictions that cannot | |
1044 | * be otherwise expressed by feature flags. The check is called with | |
1045 | * the set of features that the stack has calculated and it returns | |
1046 | * those the driver believes to be appropriate. | |
822b3b2e JF |
1047 | * int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1048 | * int queue_index, u32 maxrate); | |
1049 | * Called when a user wants to set a max-rate limitation of specific | |
1050 | * TX queue. | |
a54acb3a ND |
1051 | * int (*ndo_get_iflink)(const struct net_device *dev); |
1052 | * Called to get the iflink value of this device. | |
d746d707 AK |
1053 | * void (*ndo_change_proto_down)(struct net_device *dev, |
1054 | * bool proto_down); | |
1055 | * This function is used to pass protocol port error state information | |
1056 | * to the switch driver. The switch driver can react to the proto_down | |
1057 | * by doing a phys down on the associated switch port. | |
fc4099f1 PS |
1058 | * int (*ndo_fill_metadata_dst)(struct net_device *dev, struct sk_buff *skb); |
1059 | * This function is used to get egress tunnel information for given skb. | |
1060 | * This is useful for retrieving outer tunnel header parameters while | |
1061 | * sampling packet. | |
d746d707 | 1062 | * |
d314774c SH |
1063 | */ |
1064 | struct net_device_ops { | |
1065 | int (*ndo_init)(struct net_device *dev); | |
1066 | void (*ndo_uninit)(struct net_device *dev); | |
1067 | int (*ndo_open)(struct net_device *dev); | |
1068 | int (*ndo_stop)(struct net_device *dev); | |
dc1f8bf6 | 1069 | netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb, |
00829823 SH |
1070 | struct net_device *dev); |
1071 | u16 (*ndo_select_queue)(struct net_device *dev, | |
f663dd9a | 1072 | struct sk_buff *skb, |
99932d4f DB |
1073 | void *accel_priv, |
1074 | select_queue_fallback_t fallback); | |
d314774c SH |
1075 | void (*ndo_change_rx_flags)(struct net_device *dev, |
1076 | int flags); | |
d314774c | 1077 | void (*ndo_set_rx_mode)(struct net_device *dev); |
d314774c SH |
1078 | int (*ndo_set_mac_address)(struct net_device *dev, |
1079 | void *addr); | |
d314774c | 1080 | int (*ndo_validate_addr)(struct net_device *dev); |
d314774c SH |
1081 | int (*ndo_do_ioctl)(struct net_device *dev, |
1082 | struct ifreq *ifr, int cmd); | |
d314774c SH |
1083 | int (*ndo_set_config)(struct net_device *dev, |
1084 | struct ifmap *map); | |
00829823 SH |
1085 | int (*ndo_change_mtu)(struct net_device *dev, |
1086 | int new_mtu); | |
1087 | int (*ndo_neigh_setup)(struct net_device *dev, | |
1088 | struct neigh_parms *); | |
d314774c SH |
1089 | void (*ndo_tx_timeout) (struct net_device *dev); |
1090 | ||
28172739 ED |
1091 | struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
1092 | struct rtnl_link_stats64 *storage); | |
d314774c SH |
1093 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
1094 | ||
8e586137 | 1095 | int (*ndo_vlan_rx_add_vid)(struct net_device *dev, |
80d5c368 | 1096 | __be16 proto, u16 vid); |
8e586137 | 1097 | int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, |
80d5c368 | 1098 | __be16 proto, u16 vid); |
d314774c | 1099 | #ifdef CONFIG_NET_POLL_CONTROLLER |
d314774c | 1100 | void (*ndo_poll_controller)(struct net_device *dev); |
4247e161 | 1101 | int (*ndo_netpoll_setup)(struct net_device *dev, |
a8779ec1 | 1102 | struct netpoll_info *info); |
0e34e931 | 1103 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
06021292 | 1104 | #endif |
e0d1095a | 1105 | #ifdef CONFIG_NET_RX_BUSY_POLL |
8b80cda5 | 1106 | int (*ndo_busy_poll)(struct napi_struct *dev); |
d314774c | 1107 | #endif |
95c26df8 WM |
1108 | int (*ndo_set_vf_mac)(struct net_device *dev, |
1109 | int queue, u8 *mac); | |
1110 | int (*ndo_set_vf_vlan)(struct net_device *dev, | |
1111 | int queue, u16 vlan, u8 qos); | |
ed616689 SC |
1112 | int (*ndo_set_vf_rate)(struct net_device *dev, |
1113 | int vf, int min_tx_rate, | |
1114 | int max_tx_rate); | |
5f8444a3 GR |
1115 | int (*ndo_set_vf_spoofchk)(struct net_device *dev, |
1116 | int vf, bool setting); | |
dd461d6a HS |
1117 | int (*ndo_set_vf_trust)(struct net_device *dev, |
1118 | int vf, bool setting); | |
95c26df8 WM |
1119 | int (*ndo_get_vf_config)(struct net_device *dev, |
1120 | int vf, | |
1121 | struct ifla_vf_info *ivf); | |
1d8faf48 RE |
1122 | int (*ndo_set_vf_link_state)(struct net_device *dev, |
1123 | int vf, int link_state); | |
3b766cd8 EBE |
1124 | int (*ndo_get_vf_stats)(struct net_device *dev, |
1125 | int vf, | |
1126 | struct ifla_vf_stats | |
1127 | *vf_stats); | |
57b61080 SF |
1128 | int (*ndo_set_vf_port)(struct net_device *dev, |
1129 | int vf, | |
1130 | struct nlattr *port[]); | |
1131 | int (*ndo_get_vf_port)(struct net_device *dev, | |
1132 | int vf, struct sk_buff *skb); | |
01a3d796 VZ |
1133 | int (*ndo_set_vf_rss_query_en)( |
1134 | struct net_device *dev, | |
1135 | int vf, bool setting); | |
4f57c087 | 1136 | int (*ndo_setup_tc)(struct net_device *dev, u8 tc); |
d11ead75 | 1137 | #if IS_ENABLED(CONFIG_FCOE) |
cb454399 YZ |
1138 | int (*ndo_fcoe_enable)(struct net_device *dev); |
1139 | int (*ndo_fcoe_disable)(struct net_device *dev); | |
4d288d57 YZ |
1140 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
1141 | u16 xid, | |
1142 | struct scatterlist *sgl, | |
1143 | unsigned int sgc); | |
1144 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
1145 | u16 xid); | |
6247e086 YZ |
1146 | int (*ndo_fcoe_ddp_target)(struct net_device *dev, |
1147 | u16 xid, | |
1148 | struct scatterlist *sgl, | |
1149 | unsigned int sgc); | |
68bad94e NP |
1150 | int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1151 | struct netdev_fcoe_hbainfo *hbainfo); | |
3c9c36bc BPG |
1152 | #endif |
1153 | ||
d11ead75 | 1154 | #if IS_ENABLED(CONFIG_LIBFCOE) |
df5c7945 YZ |
1155 | #define NETDEV_FCOE_WWNN 0 |
1156 | #define NETDEV_FCOE_WWPN 1 | |
1157 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, | |
1158 | u64 *wwn, int type); | |
4d288d57 | 1159 | #endif |
3c9c36bc | 1160 | |
c445477d BH |
1161 | #ifdef CONFIG_RFS_ACCEL |
1162 | int (*ndo_rx_flow_steer)(struct net_device *dev, | |
1163 | const struct sk_buff *skb, | |
1164 | u16 rxq_index, | |
1165 | u32 flow_id); | |
1166 | #endif | |
fbaec0ea JP |
1167 | int (*ndo_add_slave)(struct net_device *dev, |
1168 | struct net_device *slave_dev); | |
1169 | int (*ndo_del_slave)(struct net_device *dev, | |
1170 | struct net_device *slave_dev); | |
c8f44aff MM |
1171 | netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1172 | netdev_features_t features); | |
5455c699 | 1173 | int (*ndo_set_features)(struct net_device *dev, |
c8f44aff | 1174 | netdev_features_t features); |
da6a8fa0 | 1175 | int (*ndo_neigh_construct)(struct neighbour *n); |
447f2191 | 1176 | void (*ndo_neigh_destroy)(struct neighbour *n); |
77162022 JF |
1177 | |
1178 | int (*ndo_fdb_add)(struct ndmsg *ndm, | |
edc7d573 | 1179 | struct nlattr *tb[], |
77162022 | 1180 | struct net_device *dev, |
6b6e2725 | 1181 | const unsigned char *addr, |
f6f6424b | 1182 | u16 vid, |
77162022 JF |
1183 | u16 flags); |
1184 | int (*ndo_fdb_del)(struct ndmsg *ndm, | |
1690be63 | 1185 | struct nlattr *tb[], |
77162022 | 1186 | struct net_device *dev, |
f6f6424b JP |
1187 | const unsigned char *addr, |
1188 | u16 vid); | |
77162022 JF |
1189 | int (*ndo_fdb_dump)(struct sk_buff *skb, |
1190 | struct netlink_callback *cb, | |
1191 | struct net_device *dev, | |
5d5eacb3 | 1192 | struct net_device *filter_dev, |
77162022 | 1193 | int idx); |
e5a55a89 JF |
1194 | |
1195 | int (*ndo_bridge_setlink)(struct net_device *dev, | |
add511b3 RP |
1196 | struct nlmsghdr *nlh, |
1197 | u16 flags); | |
e5a55a89 JF |
1198 | int (*ndo_bridge_getlink)(struct sk_buff *skb, |
1199 | u32 pid, u32 seq, | |
6cbdceeb | 1200 | struct net_device *dev, |
46c264da ND |
1201 | u32 filter_mask, |
1202 | int nlflags); | |
407af329 | 1203 | int (*ndo_bridge_dellink)(struct net_device *dev, |
add511b3 RP |
1204 | struct nlmsghdr *nlh, |
1205 | u16 flags); | |
4bf84c35 JP |
1206 | int (*ndo_change_carrier)(struct net_device *dev, |
1207 | bool new_carrier); | |
66b52b0d | 1208 | int (*ndo_get_phys_port_id)(struct net_device *dev, |
02637fce | 1209 | struct netdev_phys_item_id *ppid); |
db24a904 DA |
1210 | int (*ndo_get_phys_port_name)(struct net_device *dev, |
1211 | char *name, size_t len); | |
53cf5275 JG |
1212 | void (*ndo_add_vxlan_port)(struct net_device *dev, |
1213 | sa_family_t sa_family, | |
35e42379 | 1214 | __be16 port); |
53cf5275 JG |
1215 | void (*ndo_del_vxlan_port)(struct net_device *dev, |
1216 | sa_family_t sa_family, | |
35e42379 | 1217 | __be16 port); |
a6cc0cfa JF |
1218 | |
1219 | void* (*ndo_dfwd_add_station)(struct net_device *pdev, | |
1220 | struct net_device *dev); | |
1221 | void (*ndo_dfwd_del_station)(struct net_device *pdev, | |
1222 | void *priv); | |
1223 | ||
1224 | netdev_tx_t (*ndo_dfwd_start_xmit) (struct sk_buff *skb, | |
1225 | struct net_device *dev, | |
1226 | void *priv); | |
25175ba5 | 1227 | int (*ndo_get_lock_subclass)(struct net_device *dev); |
5f35227e JG |
1228 | netdev_features_t (*ndo_features_check) (struct sk_buff *skb, |
1229 | struct net_device *dev, | |
1230 | netdev_features_t features); | |
822b3b2e JF |
1231 | int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1232 | int queue_index, | |
1233 | u32 maxrate); | |
a54acb3a | 1234 | int (*ndo_get_iflink)(const struct net_device *dev); |
d746d707 AK |
1235 | int (*ndo_change_proto_down)(struct net_device *dev, |
1236 | bool proto_down); | |
fc4099f1 PS |
1237 | int (*ndo_fill_metadata_dst)(struct net_device *dev, |
1238 | struct sk_buff *skb); | |
d314774c SH |
1239 | }; |
1240 | ||
7aa98047 LR |
1241 | /** |
1242 | * enum net_device_priv_flags - &struct net_device priv_flags | |
1243 | * | |
1244 | * These are the &struct net_device, they are only set internally | |
1245 | * by drivers and used in the kernel. These flags are invisible to | |
1246 | * userspace, this means that the order of these flags can change | |
1247 | * during any kernel release. | |
1248 | * | |
1249 | * You should have a pretty good reason to be extending these flags. | |
1250 | * | |
1251 | * @IFF_802_1Q_VLAN: 802.1Q VLAN device | |
1252 | * @IFF_EBRIDGE: Ethernet bridging device | |
7aa98047 | 1253 | * @IFF_BONDING: bonding master or slave |
7aa98047 | 1254 | * @IFF_ISATAP: ISATAP interface (RFC4214) |
7aa98047 LR |
1255 | * @IFF_WAN_HDLC: WAN HDLC device |
1256 | * @IFF_XMIT_DST_RELEASE: dev_hard_start_xmit() is allowed to | |
1257 | * release skb->dst | |
1258 | * @IFF_DONT_BRIDGE: disallow bridging this ether dev | |
1259 | * @IFF_DISABLE_NETPOLL: disable netpoll at run-time | |
1260 | * @IFF_MACVLAN_PORT: device used as macvlan port | |
1261 | * @IFF_BRIDGE_PORT: device used as bridge port | |
1262 | * @IFF_OVS_DATAPATH: device used as Open vSwitch datapath port | |
1263 | * @IFF_TX_SKB_SHARING: The interface supports sharing skbs on transmit | |
1264 | * @IFF_UNICAST_FLT: Supports unicast filtering | |
1265 | * @IFF_TEAM_PORT: device used as team port | |
1266 | * @IFF_SUPP_NOFCS: device supports sending custom FCS | |
1267 | * @IFF_LIVE_ADDR_CHANGE: device supports hardware address | |
1268 | * change when it's running | |
1269 | * @IFF_MACVLAN: Macvlan device | |
007979ea | 1270 | * @IFF_L3MDEV_MASTER: device is an L3 master device |
fa8187c9 | 1271 | * @IFF_NO_QUEUE: device can run without qdisc attached |
35d4e172 | 1272 | * @IFF_OPENVSWITCH: device is a Open vSwitch master |
fee6d4c7 | 1273 | * @IFF_L3MDEV_SLAVE: device is enslaved to an L3 master device |
7aa98047 LR |
1274 | */ |
1275 | enum netdev_priv_flags { | |
1276 | IFF_802_1Q_VLAN = 1<<0, | |
1277 | IFF_EBRIDGE = 1<<1, | |
0dc1549b JP |
1278 | IFF_BONDING = 1<<2, |
1279 | IFF_ISATAP = 1<<3, | |
1280 | IFF_WAN_HDLC = 1<<4, | |
1281 | IFF_XMIT_DST_RELEASE = 1<<5, | |
1282 | IFF_DONT_BRIDGE = 1<<6, | |
1283 | IFF_DISABLE_NETPOLL = 1<<7, | |
1284 | IFF_MACVLAN_PORT = 1<<8, | |
1285 | IFF_BRIDGE_PORT = 1<<9, | |
1286 | IFF_OVS_DATAPATH = 1<<10, | |
1287 | IFF_TX_SKB_SHARING = 1<<11, | |
1288 | IFF_UNICAST_FLT = 1<<12, | |
1289 | IFF_TEAM_PORT = 1<<13, | |
1290 | IFF_SUPP_NOFCS = 1<<14, | |
1291 | IFF_LIVE_ADDR_CHANGE = 1<<15, | |
1292 | IFF_MACVLAN = 1<<16, | |
1293 | IFF_XMIT_DST_RELEASE_PERM = 1<<17, | |
1294 | IFF_IPVLAN_MASTER = 1<<18, | |
1295 | IFF_IPVLAN_SLAVE = 1<<19, | |
007979ea | 1296 | IFF_L3MDEV_MASTER = 1<<20, |
0dc1549b JP |
1297 | IFF_NO_QUEUE = 1<<21, |
1298 | IFF_OPENVSWITCH = 1<<22, | |
fee6d4c7 | 1299 | IFF_L3MDEV_SLAVE = 1<<23, |
7aa98047 LR |
1300 | }; |
1301 | ||
1302 | #define IFF_802_1Q_VLAN IFF_802_1Q_VLAN | |
1303 | #define IFF_EBRIDGE IFF_EBRIDGE | |
7aa98047 | 1304 | #define IFF_BONDING IFF_BONDING |
7aa98047 | 1305 | #define IFF_ISATAP IFF_ISATAP |
7aa98047 LR |
1306 | #define IFF_WAN_HDLC IFF_WAN_HDLC |
1307 | #define IFF_XMIT_DST_RELEASE IFF_XMIT_DST_RELEASE | |
1308 | #define IFF_DONT_BRIDGE IFF_DONT_BRIDGE | |
1309 | #define IFF_DISABLE_NETPOLL IFF_DISABLE_NETPOLL | |
1310 | #define IFF_MACVLAN_PORT IFF_MACVLAN_PORT | |
1311 | #define IFF_BRIDGE_PORT IFF_BRIDGE_PORT | |
1312 | #define IFF_OVS_DATAPATH IFF_OVS_DATAPATH | |
1313 | #define IFF_TX_SKB_SHARING IFF_TX_SKB_SHARING | |
1314 | #define IFF_UNICAST_FLT IFF_UNICAST_FLT | |
1315 | #define IFF_TEAM_PORT IFF_TEAM_PORT | |
1316 | #define IFF_SUPP_NOFCS IFF_SUPP_NOFCS | |
1317 | #define IFF_LIVE_ADDR_CHANGE IFF_LIVE_ADDR_CHANGE | |
1318 | #define IFF_MACVLAN IFF_MACVLAN | |
02875878 | 1319 | #define IFF_XMIT_DST_RELEASE_PERM IFF_XMIT_DST_RELEASE_PERM |
2ad7bf36 MB |
1320 | #define IFF_IPVLAN_MASTER IFF_IPVLAN_MASTER |
1321 | #define IFF_IPVLAN_SLAVE IFF_IPVLAN_SLAVE | |
007979ea | 1322 | #define IFF_L3MDEV_MASTER IFF_L3MDEV_MASTER |
fa8187c9 | 1323 | #define IFF_NO_QUEUE IFF_NO_QUEUE |
35d4e172 | 1324 | #define IFF_OPENVSWITCH IFF_OPENVSWITCH |
8f25348b | 1325 | #define IFF_L3MDEV_SLAVE IFF_L3MDEV_SLAVE |
7aa98047 | 1326 | |
536721b1 KK |
1327 | /** |
1328 | * struct net_device - The DEVICE structure. | |
1329 | * Actually, this whole structure is a big mistake. It mixes I/O | |
1330 | * data with strictly "high-level" data, and it has to know about | |
1331 | * almost every data structure used in the INET module. | |
1332 | * | |
1333 | * @name: This is the first field of the "visible" part of this structure | |
1334 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
1335 | * of the interface. | |
1336 | * | |
1337 | * @name_hlist: Device name hash chain, please keep it close to name[] | |
1338 | * @ifalias: SNMP alias | |
1339 | * @mem_end: Shared memory end | |
1340 | * @mem_start: Shared memory start | |
1341 | * @base_addr: Device I/O address | |
1342 | * @irq: Device IRQ number | |
1343 | * | |
14ffbbb8 TG |
1344 | * @carrier_changes: Stats to monitor carrier on<->off transitions |
1345 | * | |
536721b1 KK |
1346 | * @state: Generic network queuing layer state, see netdev_state_t |
1347 | * @dev_list: The global list of network devices | |
1348 | * @napi_list: List entry, that is used for polling napi devices | |
1349 | * @unreg_list: List entry, that is used, when we are unregistering the | |
1350 | * device, see the function unregister_netdev | |
1351 | * @close_list: List entry, that is used, when we are closing the device | |
1352 | * | |
1353 | * @adj_list: Directly linked devices, like slaves for bonding | |
1354 | * @all_adj_list: All linked devices, *including* neighbours | |
1355 | * @features: Currently active device features | |
1356 | * @hw_features: User-changeable features | |
1357 | * | |
1358 | * @wanted_features: User-requested features | |
1359 | * @vlan_features: Mask of features inheritable by VLAN devices | |
1360 | * | |
1361 | * @hw_enc_features: Mask of features inherited by encapsulating devices | |
1362 | * This field indicates what encapsulation | |
1363 | * offloads the hardware is capable of doing, | |
1364 | * and drivers will need to set them appropriately. | |
1365 | * | |
1366 | * @mpls_features: Mask of features inheritable by MPLS | |
1367 | * | |
1368 | * @ifindex: interface index | |
388069d3 | 1369 | * @group: The group, that the device belongs to |
536721b1 KK |
1370 | * |
1371 | * @stats: Statistics struct, which was left as a legacy, use | |
1372 | * rtnl_link_stats64 instead | |
1373 | * | |
1374 | * @rx_dropped: Dropped packets by core network, | |
1375 | * do not use this in drivers | |
1376 | * @tx_dropped: Dropped packets by core network, | |
1377 | * do not use this in drivers | |
1378 | * | |
536721b1 KK |
1379 | * @wireless_handlers: List of functions to handle Wireless Extensions, |
1380 | * instead of ioctl, | |
1381 | * see <net/iw_handler.h> for details. | |
1382 | * @wireless_data: Instance data managed by the core of wireless extensions | |
1383 | * | |
1384 | * @netdev_ops: Includes several pointers to callbacks, | |
1385 | * if one wants to override the ndo_*() functions | |
1386 | * @ethtool_ops: Management operations | |
d476059e | 1387 | * @header_ops: Includes callbacks for creating,parsing,caching,etc |
536721b1 KK |
1388 | * of Layer 2 headers. |
1389 | * | |
1390 | * @flags: Interface flags (a la BSD) | |
1391 | * @priv_flags: Like 'flags' but invisible to userspace, | |
1392 | * see if.h for the definitions | |
1393 | * @gflags: Global flags ( kept as legacy ) | |
1394 | * @padded: How much padding added by alloc_netdev() | |
1395 | * @operstate: RFC2863 operstate | |
1396 | * @link_mode: Mapping policy to operstate | |
1397 | * @if_port: Selectable AUI, TP, ... | |
1398 | * @dma: DMA channel | |
1399 | * @mtu: Interface MTU value | |
1400 | * @type: Interface hardware type | |
1401 | * @hard_header_len: Hardware header length | |
1402 | * | |
1403 | * @needed_headroom: Extra headroom the hardware may need, but not in all | |
1404 | * cases can this be guaranteed | |
1405 | * @needed_tailroom: Extra tailroom the hardware may need, but not in all | |
1406 | * cases can this be guaranteed. Some cases also use | |
1407 | * LL_MAX_HEADER instead to allocate the skb | |
1408 | * | |
1409 | * interface address info: | |
1410 | * | |
1411 | * @perm_addr: Permanent hw address | |
1412 | * @addr_assign_type: Hw address assignment type | |
1413 | * @addr_len: Hardware address length | |
1414 | * @neigh_priv_len; Used in neigh_alloc(), | |
1415 | * initialized only in atm/clip.c | |
1416 | * @dev_id: Used to differentiate devices that share | |
1417 | * the same link layer address | |
1418 | * @dev_port: Used to differentiate devices that share | |
1419 | * the same function | |
1420 | * @addr_list_lock: XXX: need comments on this one | |
536721b1 KK |
1421 | * @uc_promisc: Counter, that indicates, that promiscuous mode |
1422 | * has been enabled due to the need to listen to | |
1423 | * additional unicast addresses in a device that | |
1424 | * does not implement ndo_set_rx_mode() | |
14ffbbb8 TG |
1425 | * @uc: unicast mac addresses |
1426 | * @mc: multicast mac addresses | |
1427 | * @dev_addrs: list of device hw addresses | |
1428 | * @queues_kset: Group of all Kobjects in the Tx and RX queues | |
536721b1 KK |
1429 | * @promiscuity: Number of times, the NIC is told to work in |
1430 | * Promiscuous mode, if it becomes 0 the NIC will | |
1431 | * exit from working in Promiscuous mode | |
1432 | * @allmulti: Counter, enables or disables allmulticast mode | |
1433 | * | |
1434 | * @vlan_info: VLAN info | |
1435 | * @dsa_ptr: dsa specific data | |
1436 | * @tipc_ptr: TIPC specific data | |
1437 | * @atalk_ptr: AppleTalk link | |
1438 | * @ip_ptr: IPv4 specific data | |
1439 | * @dn_ptr: DECnet specific data | |
1440 | * @ip6_ptr: IPv6 specific data | |
1441 | * @ax25_ptr: AX.25 specific data | |
1442 | * @ieee80211_ptr: IEEE 802.11 specific data, assign before registering | |
1443 | * | |
1444 | * @last_rx: Time of last Rx | |
1445 | * @dev_addr: Hw address (before bcast, | |
1446 | * because most packets are unicast) | |
1447 | * | |
1448 | * @_rx: Array of RX queues | |
1449 | * @num_rx_queues: Number of RX queues | |
1450 | * allocated at register_netdev() time | |
1451 | * @real_num_rx_queues: Number of RX queues currently active in device | |
1452 | * | |
1453 | * @rx_handler: handler for received packets | |
1454 | * @rx_handler_data: XXX: need comments on this one | |
1455 | * @ingress_queue: XXX: need comments on this one | |
1456 | * @broadcast: hw bcast address | |
1457 | * | |
14ffbbb8 TG |
1458 | * @rx_cpu_rmap: CPU reverse-mapping for RX completion interrupts, |
1459 | * indexed by RX queue number. Assigned by driver. | |
1460 | * This must only be set if the ndo_rx_flow_steer | |
1461 | * operation is defined | |
1462 | * @index_hlist: Device index hash chain | |
1463 | * | |
536721b1 KK |
1464 | * @_tx: Array of TX queues |
1465 | * @num_tx_queues: Number of TX queues allocated at alloc_netdev_mq() time | |
1466 | * @real_num_tx_queues: Number of TX queues currently active in device | |
1467 | * @qdisc: Root qdisc from userspace point of view | |
1468 | * @tx_queue_len: Max frames per queue allowed | |
1469 | * @tx_global_lock: XXX: need comments on this one | |
1470 | * | |
1471 | * @xps_maps: XXX: need comments on this one | |
1472 | * | |
0c4f691f SF |
1473 | * @offload_fwd_mark: Offload device fwding mark |
1474 | * | |
536721b1 KK |
1475 | * @trans_start: Time (in jiffies) of last Tx |
1476 | * @watchdog_timeo: Represents the timeout that is used by | |
1477 | * the watchdog ( see dev_watchdog() ) | |
1478 | * @watchdog_timer: List of timers | |
1479 | * | |
1480 | * @pcpu_refcnt: Number of references to this device | |
1481 | * @todo_list: Delayed register/unregister | |
536721b1 KK |
1482 | * @link_watch_list: XXX: need comments on this one |
1483 | * | |
1484 | * @reg_state: Register/unregister state machine | |
1485 | * @dismantle: Device is going to be freed | |
1486 | * @rtnl_link_state: This enum represents the phases of creating | |
1487 | * a new link | |
1488 | * | |
1489 | * @destructor: Called from unregister, | |
1490 | * can be used to call free_netdev | |
1491 | * @npinfo: XXX: need comments on this one | |
1492 | * @nd_net: Network namespace this network device is inside | |
1493 | * | |
1494 | * @ml_priv: Mid-layer private | |
1495 | * @lstats: Loopback statistics | |
1496 | * @tstats: Tunnel statistics | |
1497 | * @dstats: Dummy statistics | |
1498 | * @vstats: Virtual ethernet statistics | |
1499 | * | |
1500 | * @garp_port: GARP | |
1501 | * @mrp_port: MRP | |
1502 | * | |
1503 | * @dev: Class/net/name entry | |
1504 | * @sysfs_groups: Space for optional device, statistics and wireless | |
1505 | * sysfs groups | |
1506 | * | |
1507 | * @sysfs_rx_queue_group: Space for optional per-rx queue attributes | |
1508 | * @rtnl_link_ops: Rtnl_link_ops | |
1509 | * | |
1510 | * @gso_max_size: Maximum size of generic segmentation offload | |
1511 | * @gso_max_segs: Maximum number of segments that can be passed to the | |
1512 | * NIC for GSO | |
fcbeb976 ED |
1513 | * @gso_min_segs: Minimum number of segments that can be passed to the |
1514 | * NIC for GSO | |
536721b1 KK |
1515 | * |
1516 | * @dcbnl_ops: Data Center Bridging netlink ops | |
1517 | * @num_tc: Number of traffic classes in the net device | |
1518 | * @tc_to_txq: XXX: need comments on this one | |
1519 | * @prio_tc_map XXX: need comments on this one | |
1520 | * | |
1521 | * @fcoe_ddp_xid: Max exchange id for FCoE LRO by ddp | |
1522 | * | |
1523 | * @priomap: XXX: need comments on this one | |
1524 | * @phydev: Physical device may attach itself | |
1525 | * for hardware timestamping | |
1526 | * | |
1527 | * @qdisc_tx_busylock: XXX: need comments on this one | |
1528 | * | |
d746d707 AK |
1529 | * @proto_down: protocol port state information can be sent to the |
1530 | * switch driver and used to set the phys state of the | |
1531 | * switch port. | |
1532 | * | |
1da177e4 LT |
1533 | * FIXME: cleanup struct net_device such that network protocol info |
1534 | * moves out. | |
1535 | */ | |
1536 | ||
d94d9fee | 1537 | struct net_device { |
1da177e4 | 1538 | char name[IFNAMSIZ]; |
9356b8fc | 1539 | struct hlist_node name_hlist; |
0b815a1a | 1540 | char *ifalias; |
1da177e4 LT |
1541 | /* |
1542 | * I/O specific fields | |
1543 | * FIXME: Merge these and struct ifmap into one | |
1544 | */ | |
536721b1 KK |
1545 | unsigned long mem_end; |
1546 | unsigned long mem_start; | |
1547 | unsigned long base_addr; | |
1548 | int irq; | |
1da177e4 | 1549 | |
14ffbbb8 TG |
1550 | atomic_t carrier_changes; |
1551 | ||
1da177e4 | 1552 | /* |
536721b1 KK |
1553 | * Some hardware also needs these fields (state,dev_list, |
1554 | * napi_list,unreg_list,close_list) but they are not | |
1da177e4 LT |
1555 | * part of the usual set specified in Space.c. |
1556 | */ | |
1557 | ||
1da177e4 LT |
1558 | unsigned long state; |
1559 | ||
7562f876 | 1560 | struct list_head dev_list; |
bea3348e | 1561 | struct list_head napi_list; |
44a0873d | 1562 | struct list_head unreg_list; |
5cde2829 | 1563 | struct list_head close_list; |
7866a621 SN |
1564 | struct list_head ptype_all; |
1565 | struct list_head ptype_specific; | |
2f268f12 | 1566 | |
2f268f12 VF |
1567 | struct { |
1568 | struct list_head upper; | |
1569 | struct list_head lower; | |
1570 | } adj_list; | |
1571 | ||
2f268f12 VF |
1572 | struct { |
1573 | struct list_head upper; | |
1574 | struct list_head lower; | |
1575 | } all_adj_list; | |
4c3d5e7b | 1576 | |
c8f44aff | 1577 | netdev_features_t features; |
c8f44aff | 1578 | netdev_features_t hw_features; |
c8f44aff | 1579 | netdev_features_t wanted_features; |
c8f44aff | 1580 | netdev_features_t vlan_features; |
6a674e9c | 1581 | netdev_features_t hw_enc_features; |
0d89d203 | 1582 | netdev_features_t mpls_features; |
04ed3e74 | 1583 | |
1da177e4 | 1584 | int ifindex; |
7a66bbc9 | 1585 | int group; |
1da177e4 | 1586 | |
c45d286e | 1587 | struct net_device_stats stats; |
015f0688 | 1588 | |
015f0688 ED |
1589 | atomic_long_t rx_dropped; |
1590 | atomic_long_t tx_dropped; | |
1da177e4 | 1591 | |
b86e0280 | 1592 | #ifdef CONFIG_WIRELESS_EXT |
1da177e4 | 1593 | const struct iw_handler_def * wireless_handlers; |
1da177e4 | 1594 | struct iw_public_data * wireless_data; |
b86e0280 | 1595 | #endif |
d314774c | 1596 | const struct net_device_ops *netdev_ops; |
76fd8593 | 1597 | const struct ethtool_ops *ethtool_ops; |
4170604f | 1598 | #ifdef CONFIG_NET_SWITCHDEV |
9d47c0a2 | 1599 | const struct switchdev_ops *switchdev_ops; |
4170604f | 1600 | #endif |
1b69c6d0 DA |
1601 | #ifdef CONFIG_NET_L3_MASTER_DEV |
1602 | const struct l3mdev_ops *l3mdev_ops; | |
1603 | #endif | |
1da177e4 | 1604 | |
3b04ddde SH |
1605 | const struct header_ops *header_ops; |
1606 | ||
536721b1 KK |
1607 | unsigned int flags; |
1608 | unsigned int priv_flags; | |
1609 | ||
1da177e4 | 1610 | unsigned short gflags; |
536721b1 | 1611 | unsigned short padded; |
1da177e4 | 1612 | |
536721b1 KK |
1613 | unsigned char operstate; |
1614 | unsigned char link_mode; | |
b00055aa | 1615 | |
536721b1 KK |
1616 | unsigned char if_port; |
1617 | unsigned char dma; | |
bdc220da | 1618 | |
536721b1 KK |
1619 | unsigned int mtu; |
1620 | unsigned short type; | |
1621 | unsigned short hard_header_len; | |
1da177e4 | 1622 | |
f5184d26 JB |
1623 | unsigned short needed_headroom; |
1624 | unsigned short needed_tailroom; | |
1625 | ||
1da177e4 | 1626 | /* Interface address info. */ |
536721b1 KK |
1627 | unsigned char perm_addr[MAX_ADDR_LEN]; |
1628 | unsigned char addr_assign_type; | |
1629 | unsigned char addr_len; | |
a0a9663d | 1630 | unsigned short neigh_priv_len; |
536721b1 KK |
1631 | unsigned short dev_id; |
1632 | unsigned short dev_port; | |
ccffad25 | 1633 | spinlock_t addr_list_lock; |
14ffbbb8 TG |
1634 | unsigned char name_assign_type; |
1635 | bool uc_promisc; | |
536721b1 KK |
1636 | struct netdev_hw_addr_list uc; |
1637 | struct netdev_hw_addr_list mc; | |
1638 | struct netdev_hw_addr_list dev_addrs; | |
1639 | ||
4c3d5e7b ED |
1640 | #ifdef CONFIG_SYSFS |
1641 | struct kset *queues_kset; | |
1642 | #endif | |
9d45abe1 WC |
1643 | unsigned int promiscuity; |
1644 | unsigned int allmulti; | |
1da177e4 | 1645 | |
1da177e4 LT |
1646 | |
1647 | /* Protocol specific pointers */ | |
65ac6a5f | 1648 | |
d11ead75 | 1649 | #if IS_ENABLED(CONFIG_VLAN_8021Q) |
536721b1 | 1650 | struct vlan_info __rcu *vlan_info; |
65ac6a5f | 1651 | #endif |
34a430d7 | 1652 | #if IS_ENABLED(CONFIG_NET_DSA) |
536721b1 | 1653 | struct dsa_switch_tree *dsa_ptr; |
37cb0620 YX |
1654 | #endif |
1655 | #if IS_ENABLED(CONFIG_TIPC) | |
536721b1 | 1656 | struct tipc_bearer __rcu *tipc_ptr; |
91da11f8 | 1657 | #endif |
536721b1 KK |
1658 | void *atalk_ptr; |
1659 | struct in_device __rcu *ip_ptr; | |
1660 | struct dn_dev __rcu *dn_ptr; | |
1661 | struct inet6_dev __rcu *ip6_ptr; | |
1662 | void *ax25_ptr; | |
1663 | struct wireless_dev *ieee80211_ptr; | |
98a18b6f | 1664 | struct wpan_dev *ieee802154_ptr; |
03c57747 RS |
1665 | #if IS_ENABLED(CONFIG_MPLS_ROUTING) |
1666 | struct mpls_dev __rcu *mpls_ptr; | |
1667 | #endif | |
1da177e4 | 1668 | |
9356b8fc | 1669 | /* |
cd13539b | 1670 | * Cache lines mostly used on receive path (including eth_type_trans()) |
9356b8fc | 1671 | */ |
536721b1 | 1672 | unsigned long last_rx; |
4dc89133 | 1673 | |
9356b8fc | 1674 | /* Interface address info used in eth_type_trans() */ |
536721b1 | 1675 | unsigned char *dev_addr; |
f001fde5 | 1676 | |
0a9627f2 | 1677 | |
a953be53 | 1678 | #ifdef CONFIG_SYSFS |
0a9627f2 TH |
1679 | struct netdev_rx_queue *_rx; |
1680 | ||
0a9627f2 | 1681 | unsigned int num_rx_queues; |
62fe0b40 | 1682 | unsigned int real_num_rx_queues; |
c445477d | 1683 | |
df334545 | 1684 | #endif |
0a9627f2 | 1685 | |
3b47d303 | 1686 | unsigned long gro_flush_timeout; |
61391cde | 1687 | rx_handler_func_t __rcu *rx_handler; |
1688 | void __rcu *rx_handler_data; | |
e8a0464c | 1689 | |
4cda01e8 | 1690 | #ifdef CONFIG_NET_CLS_ACT |
d2788d34 DB |
1691 | struct tcf_proto __rcu *ingress_cl_list; |
1692 | #endif | |
24824a09 | 1693 | struct netdev_queue __rcu *ingress_queue; |
e687ad60 PN |
1694 | #ifdef CONFIG_NETFILTER_INGRESS |
1695 | struct list_head nf_hooks_ingress; | |
1696 | #endif | |
d2788d34 | 1697 | |
536721b1 | 1698 | unsigned char broadcast[MAX_ADDR_LEN]; |
14ffbbb8 TG |
1699 | #ifdef CONFIG_RFS_ACCEL |
1700 | struct cpu_rmap *rx_cpu_rmap; | |
1701 | #endif | |
1702 | struct hlist_node index_hlist; | |
cd13539b ED |
1703 | |
1704 | /* | |
1705 | * Cache lines mostly used on transmit path | |
1706 | */ | |
e8a0464c DM |
1707 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
1708 | unsigned int num_tx_queues; | |
fd2ea0a7 | 1709 | unsigned int real_num_tx_queues; |
af356afa | 1710 | struct Qdisc *qdisc; |
536721b1 | 1711 | unsigned long tx_queue_len; |
c3f26a26 | 1712 | spinlock_t tx_global_lock; |
14ffbbb8 | 1713 | int watchdog_timeo; |
cd13539b | 1714 | |
bf264145 | 1715 | #ifdef CONFIG_XPS |
a4177869 | 1716 | struct xps_dev_maps __rcu *xps_maps; |
bf264145 | 1717 | #endif |
1d24eb48 | 1718 | |
0c4f691f SF |
1719 | #ifdef CONFIG_NET_SWITCHDEV |
1720 | u32 offload_fwd_mark; | |
1721 | #endif | |
1722 | ||
9356b8fc | 1723 | /* These may be needed for future network-power-down code. */ |
9d21493b ED |
1724 | |
1725 | /* | |
1726 | * trans_start here is expensive for high speed devices on SMP, | |
1727 | * please use netdev_queue->trans_start instead. | |
1728 | */ | |
536721b1 | 1729 | unsigned long trans_start; |
9356b8fc | 1730 | |
9356b8fc ED |
1731 | struct timer_list watchdog_timer; |
1732 | ||
29b4433d | 1733 | int __percpu *pcpu_refcnt; |
1da177e4 | 1734 | struct list_head todo_list; |
1da177e4 | 1735 | |
e014debe | 1736 | struct list_head link_watch_list; |
572a103d | 1737 | |
1da177e4 | 1738 | enum { NETREG_UNINITIALIZED=0, |
b17a7c17 | 1739 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
1740 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
1741 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
1742 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 1743 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
449f4544 ED |
1744 | } reg_state:8; |
1745 | ||
536721b1 | 1746 | bool dismantle; |
a2835763 PM |
1747 | |
1748 | enum { | |
1749 | RTNL_LINK_INITIALIZED, | |
1750 | RTNL_LINK_INITIALIZING, | |
1751 | } rtnl_link_state:16; | |
1da177e4 | 1752 | |
d314774c | 1753 | void (*destructor)(struct net_device *dev); |
1da177e4 | 1754 | |
1da177e4 | 1755 | #ifdef CONFIG_NETPOLL |
5fbee843 | 1756 | struct netpoll_info __rcu *npinfo; |
1da177e4 | 1757 | #endif |
eae792b7 | 1758 | |
0c5c9fb5 | 1759 | possible_net_t nd_net; |
4a1c5371 | 1760 | |
4951704b | 1761 | /* mid-layer private */ |
a7855c78 | 1762 | union { |
536721b1 KK |
1763 | void *ml_priv; |
1764 | struct pcpu_lstats __percpu *lstats; | |
8f84985f | 1765 | struct pcpu_sw_netstats __percpu *tstats; |
536721b1 KK |
1766 | struct pcpu_dstats __percpu *dstats; |
1767 | struct pcpu_vstats __percpu *vstats; | |
a7855c78 | 1768 | }; |
536721b1 | 1769 | |
3cc77ec7 | 1770 | struct garp_port __rcu *garp_port; |
febf018d | 1771 | struct mrp_port __rcu *mrp_port; |
1da177e4 | 1772 | |
536721b1 | 1773 | struct device dev; |
0c509a6c | 1774 | const struct attribute_group *sysfs_groups[4]; |
a953be53 | 1775 | const struct attribute_group *sysfs_rx_queue_group; |
38f7b870 | 1776 | |
38f7b870 | 1777 | const struct rtnl_link_ops *rtnl_link_ops; |
f25f4e44 | 1778 | |
82cc1a7a PWJ |
1779 | /* for setting kernel sock attribute on TCP connection setup */ |
1780 | #define GSO_MAX_SIZE 65536 | |
1781 | unsigned int gso_max_size; | |
30b678d8 BH |
1782 | #define GSO_MAX_SEGS 65535 |
1783 | u16 gso_max_segs; | |
fcbeb976 | 1784 | u16 gso_min_segs; |
7a6b6f51 | 1785 | #ifdef CONFIG_DCB |
32953543 | 1786 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
2f90b865 | 1787 | #endif |
4f57c087 JF |
1788 | u8 num_tc; |
1789 | struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE]; | |
1790 | u8 prio_tc_map[TC_BITMASK + 1]; | |
2f90b865 | 1791 | |
d11ead75 | 1792 | #if IS_ENABLED(CONFIG_FCOE) |
4d288d57 | 1793 | unsigned int fcoe_ddp_xid; |
5bc1421e | 1794 | #endif |
86f8515f | 1795 | #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO) |
5bc1421e | 1796 | struct netprio_map __rcu *priomap; |
4d288d57 | 1797 | #endif |
c1f19b51 | 1798 | struct phy_device *phydev; |
23d3b8bf | 1799 | struct lock_class_key *qdisc_tx_busylock; |
d746d707 | 1800 | bool proto_down; |
1da177e4 | 1801 | }; |
43cb76d9 | 1802 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 LT |
1803 | |
1804 | #define NETDEV_ALIGN 32 | |
1da177e4 | 1805 | |
4f57c087 JF |
1806 | static inline |
1807 | int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio) | |
1808 | { | |
1809 | return dev->prio_tc_map[prio & TC_BITMASK]; | |
1810 | } | |
1811 | ||
1812 | static inline | |
1813 | int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc) | |
1814 | { | |
1815 | if (tc >= dev->num_tc) | |
1816 | return -EINVAL; | |
1817 | ||
1818 | dev->prio_tc_map[prio & TC_BITMASK] = tc & TC_BITMASK; | |
1819 | return 0; | |
1820 | } | |
1821 | ||
1822 | static inline | |
1823 | void netdev_reset_tc(struct net_device *dev) | |
1824 | { | |
1825 | dev->num_tc = 0; | |
1826 | memset(dev->tc_to_txq, 0, sizeof(dev->tc_to_txq)); | |
1827 | memset(dev->prio_tc_map, 0, sizeof(dev->prio_tc_map)); | |
1828 | } | |
1829 | ||
1830 | static inline | |
1831 | int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset) | |
1832 | { | |
1833 | if (tc >= dev->num_tc) | |
1834 | return -EINVAL; | |
1835 | ||
1836 | dev->tc_to_txq[tc].count = count; | |
1837 | dev->tc_to_txq[tc].offset = offset; | |
1838 | return 0; | |
1839 | } | |
1840 | ||
1841 | static inline | |
1842 | int netdev_set_num_tc(struct net_device *dev, u8 num_tc) | |
1843 | { | |
1844 | if (num_tc > TC_MAX_QUEUE) | |
1845 | return -EINVAL; | |
1846 | ||
1847 | dev->num_tc = num_tc; | |
1848 | return 0; | |
1849 | } | |
1850 | ||
1851 | static inline | |
1852 | int netdev_get_num_tc(struct net_device *dev) | |
1853 | { | |
1854 | return dev->num_tc; | |
1855 | } | |
1856 | ||
e8a0464c DM |
1857 | static inline |
1858 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
1859 | unsigned int index) | |
1860 | { | |
1861 | return &dev->_tx[index]; | |
1862 | } | |
1863 | ||
10c51b56 DB |
1864 | static inline struct netdev_queue *skb_get_tx_queue(const struct net_device *dev, |
1865 | const struct sk_buff *skb) | |
1866 | { | |
1867 | return netdev_get_tx_queue(dev, skb_get_queue_mapping(skb)); | |
1868 | } | |
1869 | ||
e8a0464c DM |
1870 | static inline void netdev_for_each_tx_queue(struct net_device *dev, |
1871 | void (*f)(struct net_device *, | |
1872 | struct netdev_queue *, | |
1873 | void *), | |
1874 | void *arg) | |
1875 | { | |
1876 | unsigned int i; | |
1877 | ||
1878 | for (i = 0; i < dev->num_tx_queues; i++) | |
1879 | f(dev, &dev->_tx[i], arg); | |
1880 | } | |
1881 | ||
f629d208 | 1882 | struct netdev_queue *netdev_pick_tx(struct net_device *dev, |
f663dd9a JW |
1883 | struct sk_buff *skb, |
1884 | void *accel_priv); | |
8c4c49df | 1885 | |
c346dca1 YH |
1886 | /* |
1887 | * Net namespace inlines | |
1888 | */ | |
1889 | static inline | |
1890 | struct net *dev_net(const struct net_device *dev) | |
1891 | { | |
c2d9ba9b | 1892 | return read_pnet(&dev->nd_net); |
c346dca1 YH |
1893 | } |
1894 | ||
1895 | static inline | |
f5aa23fd | 1896 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 | 1897 | { |
0c5c9fb5 | 1898 | write_pnet(&dev->nd_net, net); |
c346dca1 YH |
1899 | } |
1900 | ||
3e8a72d1 | 1901 | static inline bool netdev_uses_dsa(struct net_device *dev) |
cf85d08f | 1902 | { |
3fc88677 | 1903 | #if IS_ENABLED(CONFIG_NET_DSA) |
5aed85ce FF |
1904 | if (dev->dsa_ptr != NULL) |
1905 | return dsa_uses_tagged_protocol(dev->dsa_ptr); | |
396138f0 | 1906 | #endif |
5aed85ce | 1907 | return false; |
396138f0 LB |
1908 | } |
1909 | ||
bea3348e SH |
1910 | /** |
1911 | * netdev_priv - access network device private data | |
1912 | * @dev: network device | |
1913 | * | |
1914 | * Get network device private data | |
1915 | */ | |
6472ce60 | 1916 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 1917 | { |
1ce8e7b5 | 1918 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
1da177e4 LT |
1919 | } |
1920 | ||
1da177e4 LT |
1921 | /* Set the sysfs physical device reference for the network logical device |
1922 | * if set prior to registration will cause a symlink during initialization. | |
1923 | */ | |
43cb76d9 | 1924 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 1925 | |
384912ed | 1926 | /* Set the sysfs device type for the network logical device to allow |
3f79410c | 1927 | * fine-grained identification of different network device types. For |
384912ed MH |
1928 | * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc. |
1929 | */ | |
1930 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) | |
1931 | ||
82dc3c63 ED |
1932 | /* Default NAPI poll() weight |
1933 | * Device drivers are strongly advised to not use bigger value | |
1934 | */ | |
1935 | #define NAPI_POLL_WEIGHT 64 | |
1936 | ||
3b582cc1 SH |
1937 | /** |
1938 | * netif_napi_add - initialize a napi context | |
1939 | * @dev: network device | |
1940 | * @napi: napi context | |
1941 | * @poll: polling function | |
1942 | * @weight: default weight | |
1943 | * | |
1944 | * netif_napi_add() must be used to initialize a napi context prior to calling | |
1945 | * *any* of the other napi related functions. | |
1946 | */ | |
d565b0a1 HX |
1947 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
1948 | int (*poll)(struct napi_struct *, int), int weight); | |
bea3348e | 1949 | |
d64b5e85 ED |
1950 | /** |
1951 | * netif_tx_napi_add - initialize a napi context | |
1952 | * @dev: network device | |
1953 | * @napi: napi context | |
1954 | * @poll: polling function | |
1955 | * @weight: default weight | |
1956 | * | |
1957 | * This variant of netif_napi_add() should be used from drivers using NAPI | |
1958 | * to exclusively poll a TX queue. | |
1959 | * This will avoid we add it into napi_hash[], thus polluting this hash table. | |
1960 | */ | |
1961 | static inline void netif_tx_napi_add(struct net_device *dev, | |
1962 | struct napi_struct *napi, | |
1963 | int (*poll)(struct napi_struct *, int), | |
1964 | int weight) | |
1965 | { | |
1966 | set_bit(NAPI_STATE_NO_BUSY_POLL, &napi->state); | |
1967 | netif_napi_add(dev, napi, poll, weight); | |
1968 | } | |
1969 | ||
d8156534 AD |
1970 | /** |
1971 | * netif_napi_del - remove a napi context | |
1972 | * @napi: napi context | |
1973 | * | |
1974 | * netif_napi_del() removes a napi context from the network device napi list | |
1975 | */ | |
d565b0a1 HX |
1976 | void netif_napi_del(struct napi_struct *napi); |
1977 | ||
1978 | struct napi_gro_cb { | |
78a478d0 HX |
1979 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
1980 | void *frag0; | |
1981 | ||
7489594c HX |
1982 | /* Length of frag0. */ |
1983 | unsigned int frag0_len; | |
1984 | ||
86911732 HX |
1985 | /* This indicates where we are processing relative to skb->data. */ |
1986 | int data_offset; | |
1987 | ||
d565b0a1 | 1988 | /* This is non-zero if the packet cannot be merged with the new skb. */ |
bf5a755f JC |
1989 | u16 flush; |
1990 | ||
1991 | /* Save the IP ID here and check when we get to the transport layer */ | |
1992 | u16 flush_id; | |
d565b0a1 HX |
1993 | |
1994 | /* Number of segments aggregated. */ | |
2e71a6f8 ED |
1995 | u16 count; |
1996 | ||
15e2396d TH |
1997 | /* Start offset for remote checksum offload */ |
1998 | u16 gro_remcsum_start; | |
1999 | ||
2e71a6f8 ED |
2000 | /* jiffies when first packet was created/queued */ |
2001 | unsigned long age; | |
86347245 | 2002 | |
afe93325 | 2003 | /* Used in ipv6_gro_receive() and foo-over-udp */ |
b582ef09 OG |
2004 | u16 proto; |
2005 | ||
baa32ff4 TH |
2006 | /* This is non-zero if the packet may be of the same flow. */ |
2007 | u8 same_flow:1; | |
2008 | ||
b582ef09 | 2009 | /* Used in udp_gro_receive */ |
573e8fca TH |
2010 | u8 udp_mark:1; |
2011 | ||
2012 | /* GRO checksum is valid */ | |
2013 | u8 csum_valid:1; | |
2014 | ||
662880f4 TH |
2015 | /* Number of checksums via CHECKSUM_UNNECESSARY */ |
2016 | u8 csum_cnt:3; | |
c3c7c254 | 2017 | |
baa32ff4 TH |
2018 | /* Free the skb? */ |
2019 | u8 free:2; | |
2020 | #define NAPI_GRO_FREE 1 | |
2021 | #define NAPI_GRO_FREE_STOLEN_HEAD 2 | |
2022 | ||
efc98d08 TH |
2023 | /* Used in foo-over-udp, set in udp[46]_gro_receive */ |
2024 | u8 is_ipv6:1; | |
2025 | ||
baa32ff4 TH |
2026 | /* 7 bit hole */ |
2027 | ||
bf5a755f JC |
2028 | /* used to support CHECKSUM_COMPLETE for tunneling protocols */ |
2029 | __wsum csum; | |
2030 | ||
c3c7c254 ED |
2031 | /* used in skb_gro_receive() slow path */ |
2032 | struct sk_buff *last; | |
d565b0a1 HX |
2033 | }; |
2034 | ||
2035 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) | |
d8156534 | 2036 | |
1da177e4 | 2037 | struct packet_type { |
f2ccd8fa DM |
2038 | __be16 type; /* This is really htons(ether_type). */ |
2039 | struct net_device *dev; /* NULL is wildcarded here */ | |
2040 | int (*func) (struct sk_buff *, | |
2041 | struct net_device *, | |
2042 | struct packet_type *, | |
2043 | struct net_device *); | |
c0de08d0 EL |
2044 | bool (*id_match)(struct packet_type *ptype, |
2045 | struct sock *sk); | |
1da177e4 LT |
2046 | void *af_packet_priv; |
2047 | struct list_head list; | |
2048 | }; | |
2049 | ||
f191a1d1 | 2050 | struct offload_callbacks { |
576a30eb | 2051 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
c8f44aff | 2052 | netdev_features_t features); |
d565b0a1 | 2053 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
a2b12f3c | 2054 | struct sk_buff *skb); |
299603e8 | 2055 | int (*gro_complete)(struct sk_buff *skb, int nhoff); |
f191a1d1 VY |
2056 | }; |
2057 | ||
2058 | struct packet_offload { | |
2059 | __be16 type; /* This is really htons(ether_type). */ | |
bdef7de4 | 2060 | u16 priority; |
f191a1d1 VY |
2061 | struct offload_callbacks callbacks; |
2062 | struct list_head list; | |
1da177e4 LT |
2063 | }; |
2064 | ||
a2b12f3c TH |
2065 | struct udp_offload; |
2066 | ||
2067 | struct udp_offload_callbacks { | |
2068 | struct sk_buff **(*gro_receive)(struct sk_buff **head, | |
2069 | struct sk_buff *skb, | |
2070 | struct udp_offload *uoff); | |
2071 | int (*gro_complete)(struct sk_buff *skb, | |
2072 | int nhoff, | |
2073 | struct udp_offload *uoff); | |
2074 | }; | |
2075 | ||
b582ef09 OG |
2076 | struct udp_offload { |
2077 | __be16 port; | |
afe93325 | 2078 | u8 ipproto; |
a2b12f3c | 2079 | struct udp_offload_callbacks callbacks; |
b582ef09 OG |
2080 | }; |
2081 | ||
8f84985f LR |
2082 | /* often modified stats are per cpu, other are shared (netdev->stats) */ |
2083 | struct pcpu_sw_netstats { | |
2084 | u64 rx_packets; | |
2085 | u64 rx_bytes; | |
2086 | u64 tx_packets; | |
2087 | u64 tx_bytes; | |
2088 | struct u64_stats_sync syncp; | |
2089 | }; | |
2090 | ||
aabc92bb PNA |
2091 | #define __netdev_alloc_pcpu_stats(type, gfp) \ |
2092 | ({ \ | |
2093 | typeof(type) __percpu *pcpu_stats = alloc_percpu_gfp(type, gfp);\ | |
2094 | if (pcpu_stats) { \ | |
2095 | int __cpu; \ | |
2096 | for_each_possible_cpu(__cpu) { \ | |
2097 | typeof(type) *stat; \ | |
2098 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ | |
2099 | u64_stats_init(&stat->syncp); \ | |
2100 | } \ | |
2101 | } \ | |
2102 | pcpu_stats; \ | |
1c213bd2 WC |
2103 | }) |
2104 | ||
aabc92bb PNA |
2105 | #define netdev_alloc_pcpu_stats(type) \ |
2106 | __netdev_alloc_pcpu_stats(type, GFP_KERNEL); | |
2107 | ||
1da177e4 LT |
2108 | #include <linux/notifier.h> |
2109 | ||
dcfe1421 AW |
2110 | /* netdevice notifier chain. Please remember to update the rtnetlink |
2111 | * notification exclusion list in rtnetlink_event() when adding new | |
2112 | * types. | |
2113 | */ | |
2114 | #define NETDEV_UP 0x0001 /* For now you can't veto a device up/down */ | |
2115 | #define NETDEV_DOWN 0x0002 | |
2116 | #define NETDEV_REBOOT 0x0003 /* Tell a protocol stack a network interface | |
2117 | detected a hardware crash and restarted | |
2118 | - we can use this eg to kick tcp sessions | |
2119 | once done */ | |
2120 | #define NETDEV_CHANGE 0x0004 /* Notify device state change */ | |
2121 | #define NETDEV_REGISTER 0x0005 | |
2122 | #define NETDEV_UNREGISTER 0x0006 | |
1d486bfb | 2123 | #define NETDEV_CHANGEMTU 0x0007 /* notify after mtu change happened */ |
dcfe1421 AW |
2124 | #define NETDEV_CHANGEADDR 0x0008 |
2125 | #define NETDEV_GOING_DOWN 0x0009 | |
2126 | #define NETDEV_CHANGENAME 0x000A | |
2127 | #define NETDEV_FEAT_CHANGE 0x000B | |
2128 | #define NETDEV_BONDING_FAILOVER 0x000C | |
2129 | #define NETDEV_PRE_UP 0x000D | |
2130 | #define NETDEV_PRE_TYPE_CHANGE 0x000E | |
2131 | #define NETDEV_POST_TYPE_CHANGE 0x000F | |
2132 | #define NETDEV_POST_INIT 0x0010 | |
0115e8e3 | 2133 | #define NETDEV_UNREGISTER_FINAL 0x0011 |
dcfe1421 AW |
2134 | #define NETDEV_RELEASE 0x0012 |
2135 | #define NETDEV_NOTIFY_PEERS 0x0013 | |
2136 | #define NETDEV_JOIN 0x0014 | |
42e52bf9 | 2137 | #define NETDEV_CHANGEUPPER 0x0015 |
4aa5dee4 | 2138 | #define NETDEV_RESEND_IGMP 0x0016 |
1d486bfb | 2139 | #define NETDEV_PRECHANGEMTU 0x0017 /* notify before mtu change happened */ |
d4261e56 | 2140 | #define NETDEV_CHANGEINFODATA 0x0018 |
61bd3857 | 2141 | #define NETDEV_BONDING_INFO 0x0019 |
573c7ba0 | 2142 | #define NETDEV_PRECHANGEUPPER 0x001A |
dcfe1421 | 2143 | |
f629d208 JP |
2144 | int register_netdevice_notifier(struct notifier_block *nb); |
2145 | int unregister_netdevice_notifier(struct notifier_block *nb); | |
351638e7 JP |
2146 | |
2147 | struct netdev_notifier_info { | |
2148 | struct net_device *dev; | |
2149 | }; | |
2150 | ||
be9efd36 JP |
2151 | struct netdev_notifier_change_info { |
2152 | struct netdev_notifier_info info; /* must be first */ | |
2153 | unsigned int flags_changed; | |
2154 | }; | |
2155 | ||
0e4ead9d JP |
2156 | struct netdev_notifier_changeupper_info { |
2157 | struct netdev_notifier_info info; /* must be first */ | |
2158 | struct net_device *upper_dev; /* new upper dev */ | |
2159 | bool master; /* is upper dev master */ | |
2160 | bool linking; /* is the nofication for link or unlink */ | |
2161 | }; | |
2162 | ||
75538c2b CW |
2163 | static inline void netdev_notifier_info_init(struct netdev_notifier_info *info, |
2164 | struct net_device *dev) | |
2165 | { | |
2166 | info->dev = dev; | |
2167 | } | |
2168 | ||
351638e7 JP |
2169 | static inline struct net_device * |
2170 | netdev_notifier_info_to_dev(const struct netdev_notifier_info *info) | |
2171 | { | |
2172 | return info->dev; | |
2173 | } | |
2174 | ||
f629d208 | 2175 | int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
dcfe1421 AW |
2176 | |
2177 | ||
1da177e4 LT |
2178 | extern rwlock_t dev_base_lock; /* Device list lock */ |
2179 | ||
881d966b EB |
2180 | #define for_each_netdev(net, d) \ |
2181 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
dcbccbd4 EB |
2182 | #define for_each_netdev_reverse(net, d) \ |
2183 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) | |
c6d14c84 ED |
2184 | #define for_each_netdev_rcu(net, d) \ |
2185 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b EB |
2186 | #define for_each_netdev_safe(net, d, n) \ |
2187 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
2188 | #define for_each_netdev_continue(net, d) \ | |
2189 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
254245d2 | 2190 | #define for_each_netdev_continue_rcu(net, d) \ |
2191 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) | |
8a7fbfab | 2192 | #define for_each_netdev_in_bond_rcu(bond, slave) \ |
2193 | for_each_netdev_rcu(&init_net, slave) \ | |
4ccce02e | 2194 | if (netdev_master_upper_dev_get_rcu(slave) == (bond)) |
881d966b | 2195 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
7562f876 | 2196 | |
a050c33f DL |
2197 | static inline struct net_device *next_net_device(struct net_device *dev) |
2198 | { | |
2199 | struct list_head *lh; | |
2200 | struct net *net; | |
2201 | ||
c346dca1 | 2202 | net = dev_net(dev); |
a050c33f DL |
2203 | lh = dev->dev_list.next; |
2204 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2205 | } | |
2206 | ||
ce81b76a ED |
2207 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
2208 | { | |
2209 | struct list_head *lh; | |
2210 | struct net *net; | |
2211 | ||
2212 | net = dev_net(dev); | |
ccf43438 | 2213 | lh = rcu_dereference(list_next_rcu(&dev->dev_list)); |
ce81b76a ED |
2214 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
2215 | } | |
2216 | ||
a050c33f DL |
2217 | static inline struct net_device *first_net_device(struct net *net) |
2218 | { | |
2219 | return list_empty(&net->dev_base_head) ? NULL : | |
2220 | net_device_entry(net->dev_base_head.next); | |
2221 | } | |
7562f876 | 2222 | |
ccf43438 ED |
2223 | static inline struct net_device *first_net_device_rcu(struct net *net) |
2224 | { | |
2225 | struct list_head *lh = rcu_dereference(list_next_rcu(&net->dev_base_head)); | |
2226 | ||
2227 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2228 | } | |
2229 | ||
f629d208 JP |
2230 | int netdev_boot_setup_check(struct net_device *dev); |
2231 | unsigned long netdev_boot_base(const char *prefix, int unit); | |
2232 | struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, | |
2233 | const char *hwaddr); | |
2234 | struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
2235 | struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
2236 | void dev_add_pack(struct packet_type *pt); | |
2237 | void dev_remove_pack(struct packet_type *pt); | |
2238 | void __dev_remove_pack(struct packet_type *pt); | |
2239 | void dev_add_offload(struct packet_offload *po); | |
2240 | void dev_remove_offload(struct packet_offload *po); | |
f629d208 | 2241 | |
a54acb3a | 2242 | int dev_get_iflink(const struct net_device *dev); |
fc4099f1 | 2243 | int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb); |
6c555490 WC |
2244 | struct net_device *__dev_get_by_flags(struct net *net, unsigned short flags, |
2245 | unsigned short mask); | |
f629d208 JP |
2246 | struct net_device *dev_get_by_name(struct net *net, const char *name); |
2247 | struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); | |
2248 | struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
2249 | int dev_alloc_name(struct net_device *dev, const char *name); | |
2250 | int dev_open(struct net_device *dev); | |
2251 | int dev_close(struct net_device *dev); | |
99c4a26a | 2252 | int dev_close_many(struct list_head *head, bool unlink); |
f629d208 | 2253 | void dev_disable_lro(struct net_device *dev); |
0c4b51f0 | 2254 | int dev_loopback_xmit(struct net *net, struct sock *sk, struct sk_buff *newskb); |
2b4aa3ce | 2255 | int dev_queue_xmit(struct sk_buff *skb); |
f663dd9a | 2256 | int dev_queue_xmit_accel(struct sk_buff *skb, void *accel_priv); |
f629d208 JP |
2257 | int register_netdevice(struct net_device *dev); |
2258 | void unregister_netdevice_queue(struct net_device *dev, struct list_head *head); | |
2259 | void unregister_netdevice_many(struct list_head *head); | |
44a0873d ED |
2260 | static inline void unregister_netdevice(struct net_device *dev) |
2261 | { | |
2262 | unregister_netdevice_queue(dev, NULL); | |
2263 | } | |
2264 | ||
f629d208 JP |
2265 | int netdev_refcnt_read(const struct net_device *dev); |
2266 | void free_netdev(struct net_device *dev); | |
74d332c1 | 2267 | void netdev_freemem(struct net_device *dev); |
f629d208 JP |
2268 | void synchronize_net(void); |
2269 | int init_dummy_netdev(struct net_device *dev); | |
937f1ba5 | 2270 | |
f60e5990 | 2271 | DECLARE_PER_CPU(int, xmit_recursion); |
2272 | static inline int dev_recursion_level(void) | |
2273 | { | |
2274 | return this_cpu_read(xmit_recursion); | |
2275 | } | |
2276 | ||
f629d208 JP |
2277 | struct net_device *dev_get_by_index(struct net *net, int ifindex); |
2278 | struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
2279 | struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); | |
2280 | int netdev_get_name(struct net *net, char *name, int ifindex); | |
2281 | int dev_restart(struct net_device *dev); | |
f629d208 | 2282 | int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb); |
86911732 HX |
2283 | |
2284 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) | |
2285 | { | |
2286 | return NAPI_GRO_CB(skb)->data_offset; | |
2287 | } | |
2288 | ||
2289 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) | |
2290 | { | |
2291 | return skb->len - NAPI_GRO_CB(skb)->data_offset; | |
2292 | } | |
2293 | ||
2294 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) | |
2295 | { | |
2296 | NAPI_GRO_CB(skb)->data_offset += len; | |
2297 | } | |
2298 | ||
a5b1cf28 HX |
2299 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
2300 | unsigned int offset) | |
86911732 | 2301 | { |
a5b1cf28 HX |
2302 | return NAPI_GRO_CB(skb)->frag0 + offset; |
2303 | } | |
78a478d0 | 2304 | |
a5b1cf28 HX |
2305 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
2306 | { | |
2307 | return NAPI_GRO_CB(skb)->frag0_len < hlen; | |
2308 | } | |
78a478d0 | 2309 | |
a5b1cf28 HX |
2310 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
2311 | unsigned int offset) | |
2312 | { | |
17dd759c HX |
2313 | if (!pskb_may_pull(skb, hlen)) |
2314 | return NULL; | |
2315 | ||
a5b1cf28 HX |
2316 | NAPI_GRO_CB(skb)->frag0 = NULL; |
2317 | NAPI_GRO_CB(skb)->frag0_len = 0; | |
17dd759c | 2318 | return skb->data + offset; |
86911732 | 2319 | } |
1da177e4 | 2320 | |
36e7b1b8 HX |
2321 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
2322 | { | |
78d3fd0b HX |
2323 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
2324 | skb_network_offset(skb); | |
36e7b1b8 HX |
2325 | } |
2326 | ||
bf5a755f JC |
2327 | static inline void skb_gro_postpull_rcsum(struct sk_buff *skb, |
2328 | const void *start, unsigned int len) | |
2329 | { | |
573e8fca | 2330 | if (NAPI_GRO_CB(skb)->csum_valid) |
bf5a755f JC |
2331 | NAPI_GRO_CB(skb)->csum = csum_sub(NAPI_GRO_CB(skb)->csum, |
2332 | csum_partial(start, len, 0)); | |
2333 | } | |
2334 | ||
573e8fca TH |
2335 | /* GRO checksum functions. These are logical equivalents of the normal |
2336 | * checksum functions (in skbuff.h) except that they operate on the GRO | |
2337 | * offsets and fields in sk_buff. | |
2338 | */ | |
2339 | ||
2340 | __sum16 __skb_gro_checksum_complete(struct sk_buff *skb); | |
2341 | ||
15e2396d TH |
2342 | static inline bool skb_at_gro_remcsum_start(struct sk_buff *skb) |
2343 | { | |
b7fe10e5 | 2344 | return (NAPI_GRO_CB(skb)->gro_remcsum_start == skb_gro_offset(skb)); |
15e2396d TH |
2345 | } |
2346 | ||
573e8fca TH |
2347 | static inline bool __skb_gro_checksum_validate_needed(struct sk_buff *skb, |
2348 | bool zero_okay, | |
2349 | __sum16 check) | |
2350 | { | |
6edec0e6 TH |
2351 | return ((skb->ip_summed != CHECKSUM_PARTIAL || |
2352 | skb_checksum_start_offset(skb) < | |
2353 | skb_gro_offset(skb)) && | |
15e2396d | 2354 | !skb_at_gro_remcsum_start(skb) && |
662880f4 | 2355 | NAPI_GRO_CB(skb)->csum_cnt == 0 && |
573e8fca TH |
2356 | (!zero_okay || check)); |
2357 | } | |
2358 | ||
2359 | static inline __sum16 __skb_gro_checksum_validate_complete(struct sk_buff *skb, | |
2360 | __wsum psum) | |
2361 | { | |
2362 | if (NAPI_GRO_CB(skb)->csum_valid && | |
2363 | !csum_fold(csum_add(psum, NAPI_GRO_CB(skb)->csum))) | |
2364 | return 0; | |
2365 | ||
2366 | NAPI_GRO_CB(skb)->csum = psum; | |
2367 | ||
2368 | return __skb_gro_checksum_complete(skb); | |
2369 | } | |
2370 | ||
573e8fca TH |
2371 | static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb) |
2372 | { | |
662880f4 TH |
2373 | if (NAPI_GRO_CB(skb)->csum_cnt > 0) { |
2374 | /* Consume a checksum from CHECKSUM_UNNECESSARY */ | |
2375 | NAPI_GRO_CB(skb)->csum_cnt--; | |
2376 | } else { | |
2377 | /* Update skb for CHECKSUM_UNNECESSARY and csum_level when we | |
2378 | * verified a new top level checksum or an encapsulated one | |
2379 | * during GRO. This saves work if we fallback to normal path. | |
2380 | */ | |
2381 | __skb_incr_checksum_unnecessary(skb); | |
573e8fca TH |
2382 | } |
2383 | } | |
2384 | ||
2385 | #define __skb_gro_checksum_validate(skb, proto, zero_okay, check, \ | |
2386 | compute_pseudo) \ | |
2387 | ({ \ | |
2388 | __sum16 __ret = 0; \ | |
2389 | if (__skb_gro_checksum_validate_needed(skb, zero_okay, check)) \ | |
2390 | __ret = __skb_gro_checksum_validate_complete(skb, \ | |
2391 | compute_pseudo(skb, proto)); \ | |
5a212329 TH |
2392 | if (__ret) \ |
2393 | __skb_mark_checksum_bad(skb); \ | |
2394 | else \ | |
573e8fca TH |
2395 | skb_gro_incr_csum_unnecessary(skb); \ |
2396 | __ret; \ | |
2397 | }) | |
2398 | ||
2399 | #define skb_gro_checksum_validate(skb, proto, compute_pseudo) \ | |
2400 | __skb_gro_checksum_validate(skb, proto, false, 0, compute_pseudo) | |
2401 | ||
2402 | #define skb_gro_checksum_validate_zero_check(skb, proto, check, \ | |
2403 | compute_pseudo) \ | |
2404 | __skb_gro_checksum_validate(skb, proto, true, check, compute_pseudo) | |
2405 | ||
2406 | #define skb_gro_checksum_simple_validate(skb) \ | |
2407 | __skb_gro_checksum_validate(skb, 0, false, 0, null_compute_pseudo) | |
2408 | ||
d96535a1 TH |
2409 | static inline bool __skb_gro_checksum_convert_check(struct sk_buff *skb) |
2410 | { | |
2411 | return (NAPI_GRO_CB(skb)->csum_cnt == 0 && | |
2412 | !NAPI_GRO_CB(skb)->csum_valid); | |
2413 | } | |
2414 | ||
2415 | static inline void __skb_gro_checksum_convert(struct sk_buff *skb, | |
2416 | __sum16 check, __wsum pseudo) | |
2417 | { | |
2418 | NAPI_GRO_CB(skb)->csum = ~pseudo; | |
2419 | NAPI_GRO_CB(skb)->csum_valid = 1; | |
2420 | } | |
2421 | ||
2422 | #define skb_gro_checksum_try_convert(skb, proto, check, compute_pseudo) \ | |
2423 | do { \ | |
2424 | if (__skb_gro_checksum_convert_check(skb)) \ | |
2425 | __skb_gro_checksum_convert(skb, check, \ | |
2426 | compute_pseudo(skb, proto)); \ | |
2427 | } while (0) | |
2428 | ||
26c4f7da TH |
2429 | struct gro_remcsum { |
2430 | int offset; | |
2431 | __wsum delta; | |
2432 | }; | |
2433 | ||
2434 | static inline void skb_gro_remcsum_init(struct gro_remcsum *grc) | |
2435 | { | |
846cd667 | 2436 | grc->offset = 0; |
26c4f7da TH |
2437 | grc->delta = 0; |
2438 | } | |
2439 | ||
b7fe10e5 TH |
2440 | static inline void *skb_gro_remcsum_process(struct sk_buff *skb, void *ptr, |
2441 | unsigned int off, size_t hdrlen, | |
2442 | int start, int offset, | |
2443 | struct gro_remcsum *grc, | |
2444 | bool nopartial) | |
dcdc8994 TH |
2445 | { |
2446 | __wsum delta; | |
b7fe10e5 | 2447 | size_t plen = hdrlen + max_t(size_t, offset + sizeof(u16), start); |
dcdc8994 TH |
2448 | |
2449 | BUG_ON(!NAPI_GRO_CB(skb)->csum_valid); | |
2450 | ||
15e2396d | 2451 | if (!nopartial) { |
b7fe10e5 TH |
2452 | NAPI_GRO_CB(skb)->gro_remcsum_start = off + hdrlen + start; |
2453 | return ptr; | |
2454 | } | |
2455 | ||
2456 | ptr = skb_gro_header_fast(skb, off); | |
2457 | if (skb_gro_header_hard(skb, off + plen)) { | |
2458 | ptr = skb_gro_header_slow(skb, off + plen, off); | |
2459 | if (!ptr) | |
2460 | return NULL; | |
15e2396d TH |
2461 | } |
2462 | ||
b7fe10e5 TH |
2463 | delta = remcsum_adjust(ptr + hdrlen, NAPI_GRO_CB(skb)->csum, |
2464 | start, offset); | |
dcdc8994 TH |
2465 | |
2466 | /* Adjust skb->csum since we changed the packet */ | |
dcdc8994 | 2467 | NAPI_GRO_CB(skb)->csum = csum_add(NAPI_GRO_CB(skb)->csum, delta); |
26c4f7da | 2468 | |
b7fe10e5 | 2469 | grc->offset = off + hdrlen + offset; |
26c4f7da | 2470 | grc->delta = delta; |
b7fe10e5 TH |
2471 | |
2472 | return ptr; | |
dcdc8994 TH |
2473 | } |
2474 | ||
26c4f7da TH |
2475 | static inline void skb_gro_remcsum_cleanup(struct sk_buff *skb, |
2476 | struct gro_remcsum *grc) | |
2477 | { | |
b7fe10e5 TH |
2478 | void *ptr; |
2479 | size_t plen = grc->offset + sizeof(u16); | |
2480 | ||
26c4f7da TH |
2481 | if (!grc->delta) |
2482 | return; | |
2483 | ||
b7fe10e5 TH |
2484 | ptr = skb_gro_header_fast(skb, grc->offset); |
2485 | if (skb_gro_header_hard(skb, grc->offset + sizeof(u16))) { | |
2486 | ptr = skb_gro_header_slow(skb, plen, grc->offset); | |
2487 | if (!ptr) | |
2488 | return; | |
2489 | } | |
2490 | ||
2491 | remcsum_unadjust((__sum16 *)ptr, grc->delta); | |
26c4f7da | 2492 | } |
dcdc8994 | 2493 | |
0c4e8581 SH |
2494 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
2495 | unsigned short type, | |
3b04ddde | 2496 | const void *daddr, const void *saddr, |
95c96174 | 2497 | unsigned int len) |
0c4e8581 | 2498 | { |
f1ecfd5d | 2499 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 2500 | return 0; |
3b04ddde SH |
2501 | |
2502 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
2503 | } |
2504 | ||
b95cce35 SH |
2505 | static inline int dev_parse_header(const struct sk_buff *skb, |
2506 | unsigned char *haddr) | |
2507 | { | |
2508 | const struct net_device *dev = skb->dev; | |
2509 | ||
1b83336b | 2510 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 2511 | return 0; |
3b04ddde | 2512 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
2513 | } |
2514 | ||
1da177e4 | 2515 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
f629d208 | 2516 | int register_gifconf(unsigned int family, gifconf_func_t *gifconf); |
1da177e4 LT |
2517 | static inline int unregister_gifconf(unsigned int family) |
2518 | { | |
2519 | return register_gifconf(family, NULL); | |
2520 | } | |
2521 | ||
99bbc707 | 2522 | #ifdef CONFIG_NET_FLOW_LIMIT |
5f121b9a | 2523 | #define FLOW_LIMIT_HISTORY (1 << 7) /* must be ^2 and !overflow buckets */ |
99bbc707 WB |
2524 | struct sd_flow_limit { |
2525 | u64 count; | |
2526 | unsigned int num_buckets; | |
2527 | unsigned int history_head; | |
2528 | u16 history[FLOW_LIMIT_HISTORY]; | |
2529 | u8 buckets[]; | |
2530 | }; | |
2531 | ||
2532 | extern int netdev_flow_limit_table_len; | |
2533 | #endif /* CONFIG_NET_FLOW_LIMIT */ | |
2534 | ||
1da177e4 | 2535 | /* |
88751275 | 2536 | * Incoming packets are placed on per-cpu queues |
1da177e4 | 2537 | */ |
d94d9fee | 2538 | struct softnet_data { |
1da177e4 | 2539 | struct list_head poll_list; |
6e7676c1 | 2540 | struct sk_buff_head process_queue; |
1da177e4 | 2541 | |
dee42870 | 2542 | /* stats */ |
cd7b5396 DM |
2543 | unsigned int processed; |
2544 | unsigned int time_squeeze; | |
2545 | unsigned int cpu_collision; | |
2546 | unsigned int received_rps; | |
fd793d89 | 2547 | #ifdef CONFIG_RPS |
88751275 | 2548 | struct softnet_data *rps_ipi_list; |
4cdb1e2e ED |
2549 | #endif |
2550 | #ifdef CONFIG_NET_FLOW_LIMIT | |
2551 | struct sd_flow_limit __rcu *flow_limit; | |
2552 | #endif | |
2553 | struct Qdisc *output_queue; | |
2554 | struct Qdisc **output_queue_tailp; | |
2555 | struct sk_buff *completion_queue; | |
88751275 | 2556 | |
4cdb1e2e | 2557 | #ifdef CONFIG_RPS |
88751275 | 2558 | /* Elements below can be accessed between CPUs for RPS */ |
0a9627f2 | 2559 | struct call_single_data csd ____cacheline_aligned_in_smp; |
88751275 ED |
2560 | struct softnet_data *rps_ipi_next; |
2561 | unsigned int cpu; | |
fec5e652 | 2562 | unsigned int input_queue_head; |
76cc8b13 | 2563 | unsigned int input_queue_tail; |
1e94d72f | 2564 | #endif |
95c96174 | 2565 | unsigned int dropped; |
0a9627f2 | 2566 | struct sk_buff_head input_pkt_queue; |
bea3348e | 2567 | struct napi_struct backlog; |
99bbc707 | 2568 | |
1da177e4 LT |
2569 | }; |
2570 | ||
76cc8b13 | 2571 | static inline void input_queue_head_incr(struct softnet_data *sd) |
fec5e652 TH |
2572 | { |
2573 | #ifdef CONFIG_RPS | |
76cc8b13 TH |
2574 | sd->input_queue_head++; |
2575 | #endif | |
2576 | } | |
2577 | ||
2578 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, | |
2579 | unsigned int *qtail) | |
2580 | { | |
2581 | #ifdef CONFIG_RPS | |
2582 | *qtail = ++sd->input_queue_tail; | |
fec5e652 TH |
2583 | #endif |
2584 | } | |
2585 | ||
0a9627f2 | 2586 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
1da177e4 | 2587 | |
f629d208 | 2588 | void __netif_schedule(struct Qdisc *q); |
46e5da40 | 2589 | void netif_schedule_queue(struct netdev_queue *txq); |
86d804e1 | 2590 | |
fd2ea0a7 DM |
2591 | static inline void netif_tx_schedule_all(struct net_device *dev) |
2592 | { | |
2593 | unsigned int i; | |
2594 | ||
2595 | for (i = 0; i < dev->num_tx_queues; i++) | |
2596 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
2597 | } | |
2598 | ||
d29f749e DJ |
2599 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
2600 | { | |
73466498 | 2601 | clear_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
2602 | } |
2603 | ||
bea3348e SH |
2604 | /** |
2605 | * netif_start_queue - allow transmit | |
2606 | * @dev: network device | |
2607 | * | |
2608 | * Allow upper layers to call the device hard_start_xmit routine. | |
2609 | */ | |
1da177e4 LT |
2610 | static inline void netif_start_queue(struct net_device *dev) |
2611 | { | |
e8a0464c | 2612 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2613 | } |
2614 | ||
fd2ea0a7 DM |
2615 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
2616 | { | |
2617 | unsigned int i; | |
2618 | ||
2619 | for (i = 0; i < dev->num_tx_queues; i++) { | |
2620 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
2621 | netif_tx_start_queue(txq); | |
2622 | } | |
2623 | } | |
2624 | ||
46e5da40 | 2625 | void netif_tx_wake_queue(struct netdev_queue *dev_queue); |
79d16385 | 2626 | |
d29f749e DJ |
2627 | /** |
2628 | * netif_wake_queue - restart transmit | |
2629 | * @dev: network device | |
2630 | * | |
2631 | * Allow upper layers to call the device hard_start_xmit routine. | |
2632 | * Used for flow control when transmit resources are available. | |
2633 | */ | |
79d16385 DM |
2634 | static inline void netif_wake_queue(struct net_device *dev) |
2635 | { | |
e8a0464c | 2636 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2637 | } |
2638 | ||
fd2ea0a7 DM |
2639 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
2640 | { | |
2641 | unsigned int i; | |
2642 | ||
2643 | for (i = 0; i < dev->num_tx_queues; i++) { | |
2644 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
2645 | netif_tx_wake_queue(txq); | |
2646 | } | |
2647 | } | |
2648 | ||
d29f749e DJ |
2649 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
2650 | { | |
73466498 | 2651 | set_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
2652 | } |
2653 | ||
bea3348e SH |
2654 | /** |
2655 | * netif_stop_queue - stop transmitted packets | |
2656 | * @dev: network device | |
2657 | * | |
2658 | * Stop upper layers calling the device hard_start_xmit routine. | |
2659 | * Used for flow control when transmit resources are unavailable. | |
2660 | */ | |
1da177e4 LT |
2661 | static inline void netif_stop_queue(struct net_device *dev) |
2662 | { | |
e8a0464c | 2663 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2664 | } |
2665 | ||
a2029240 | 2666 | void netif_tx_stop_all_queues(struct net_device *dev); |
fd2ea0a7 | 2667 | |
4d29515f | 2668 | static inline bool netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
d29f749e | 2669 | { |
73466498 | 2670 | return test_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
2671 | } |
2672 | ||
bea3348e SH |
2673 | /** |
2674 | * netif_queue_stopped - test if transmit queue is flowblocked | |
2675 | * @dev: network device | |
2676 | * | |
2677 | * Test if transmit queue on device is currently unable to send. | |
2678 | */ | |
4d29515f | 2679 | static inline bool netif_queue_stopped(const struct net_device *dev) |
1da177e4 | 2680 | { |
e8a0464c | 2681 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2682 | } |
2683 | ||
4d29515f | 2684 | static inline bool netif_xmit_stopped(const struct netdev_queue *dev_queue) |
c3f26a26 | 2685 | { |
73466498 TH |
2686 | return dev_queue->state & QUEUE_STATE_ANY_XOFF; |
2687 | } | |
2688 | ||
8e2f1a63 DB |
2689 | static inline bool |
2690 | netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue) | |
73466498 TH |
2691 | { |
2692 | return dev_queue->state & QUEUE_STATE_ANY_XOFF_OR_FROZEN; | |
2693 | } | |
2694 | ||
8e2f1a63 DB |
2695 | static inline bool |
2696 | netif_xmit_frozen_or_drv_stopped(const struct netdev_queue *dev_queue) | |
2697 | { | |
2698 | return dev_queue->state & QUEUE_STATE_DRV_XOFF_OR_FROZEN; | |
2699 | } | |
2700 | ||
53511453 ED |
2701 | /** |
2702 | * netdev_txq_bql_enqueue_prefetchw - prefetch bql data for write | |
2703 | * @dev_queue: pointer to transmit queue | |
2704 | * | |
2705 | * BQL enabled drivers might use this helper in their ndo_start_xmit(), | |
2706 | * to give appropriate hint to the cpu. | |
2707 | */ | |
2708 | static inline void netdev_txq_bql_enqueue_prefetchw(struct netdev_queue *dev_queue) | |
2709 | { | |
2710 | #ifdef CONFIG_BQL | |
2711 | prefetchw(&dev_queue->dql.num_queued); | |
2712 | #endif | |
2713 | } | |
2714 | ||
2715 | /** | |
2716 | * netdev_txq_bql_complete_prefetchw - prefetch bql data for write | |
2717 | * @dev_queue: pointer to transmit queue | |
2718 | * | |
2719 | * BQL enabled drivers might use this helper in their TX completion path, | |
2720 | * to give appropriate hint to the cpu. | |
2721 | */ | |
2722 | static inline void netdev_txq_bql_complete_prefetchw(struct netdev_queue *dev_queue) | |
2723 | { | |
2724 | #ifdef CONFIG_BQL | |
2725 | prefetchw(&dev_queue->dql.limit); | |
2726 | #endif | |
2727 | } | |
2728 | ||
c5d67bd7 TH |
2729 | static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, |
2730 | unsigned int bytes) | |
2731 | { | |
114cf580 TH |
2732 | #ifdef CONFIG_BQL |
2733 | dql_queued(&dev_queue->dql, bytes); | |
b37c0fbe AD |
2734 | |
2735 | if (likely(dql_avail(&dev_queue->dql) >= 0)) | |
2736 | return; | |
2737 | ||
2738 | set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
2739 | ||
2740 | /* | |
2741 | * The XOFF flag must be set before checking the dql_avail below, | |
2742 | * because in netdev_tx_completed_queue we update the dql_completed | |
2743 | * before checking the XOFF flag. | |
2744 | */ | |
2745 | smp_mb(); | |
2746 | ||
2747 | /* check again in case another CPU has just made room avail */ | |
2748 | if (unlikely(dql_avail(&dev_queue->dql) >= 0)) | |
2749 | clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
114cf580 | 2750 | #endif |
c5d67bd7 TH |
2751 | } |
2752 | ||
0042d0c8 FF |
2753 | /** |
2754 | * netdev_sent_queue - report the number of bytes queued to hardware | |
2755 | * @dev: network device | |
2756 | * @bytes: number of bytes queued to the hardware device queue | |
2757 | * | |
2758 | * Report the number of bytes queued for sending/completion to the network | |
2759 | * device hardware queue. @bytes should be a good approximation and should | |
2760 | * exactly match netdev_completed_queue() @bytes | |
2761 | */ | |
c5d67bd7 TH |
2762 | static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes) |
2763 | { | |
2764 | netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes); | |
2765 | } | |
2766 | ||
2767 | static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue, | |
95c96174 | 2768 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 | 2769 | { |
114cf580 | 2770 | #ifdef CONFIG_BQL |
b37c0fbe AD |
2771 | if (unlikely(!bytes)) |
2772 | return; | |
2773 | ||
2774 | dql_completed(&dev_queue->dql, bytes); | |
2775 | ||
2776 | /* | |
2777 | * Without the memory barrier there is a small possiblity that | |
2778 | * netdev_tx_sent_queue will miss the update and cause the queue to | |
2779 | * be stopped forever | |
2780 | */ | |
2781 | smp_mb(); | |
2782 | ||
2783 | if (dql_avail(&dev_queue->dql) < 0) | |
2784 | return; | |
2785 | ||
2786 | if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state)) | |
2787 | netif_schedule_queue(dev_queue); | |
114cf580 | 2788 | #endif |
c5d67bd7 TH |
2789 | } |
2790 | ||
0042d0c8 FF |
2791 | /** |
2792 | * netdev_completed_queue - report bytes and packets completed by device | |
2793 | * @dev: network device | |
2794 | * @pkts: actual number of packets sent over the medium | |
2795 | * @bytes: actual number of bytes sent over the medium | |
2796 | * | |
2797 | * Report the number of bytes and packets transmitted by the network device | |
2798 | * hardware queue over the physical medium, @bytes must exactly match the | |
2799 | * @bytes amount passed to netdev_sent_queue() | |
2800 | */ | |
c5d67bd7 | 2801 | static inline void netdev_completed_queue(struct net_device *dev, |
95c96174 | 2802 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 TH |
2803 | { |
2804 | netdev_tx_completed_queue(netdev_get_tx_queue(dev, 0), pkts, bytes); | |
2805 | } | |
2806 | ||
2807 | static inline void netdev_tx_reset_queue(struct netdev_queue *q) | |
2808 | { | |
114cf580 | 2809 | #ifdef CONFIG_BQL |
5c490354 | 2810 | clear_bit(__QUEUE_STATE_STACK_XOFF, &q->state); |
114cf580 TH |
2811 | dql_reset(&q->dql); |
2812 | #endif | |
c5d67bd7 TH |
2813 | } |
2814 | ||
0042d0c8 FF |
2815 | /** |
2816 | * netdev_reset_queue - reset the packets and bytes count of a network device | |
2817 | * @dev_queue: network device | |
2818 | * | |
2819 | * Reset the bytes and packet count of a network device and clear the | |
2820 | * software flow control OFF bit for this network device | |
2821 | */ | |
c5d67bd7 TH |
2822 | static inline void netdev_reset_queue(struct net_device *dev_queue) |
2823 | { | |
2824 | netdev_tx_reset_queue(netdev_get_tx_queue(dev_queue, 0)); | |
c3f26a26 DM |
2825 | } |
2826 | ||
b9507bda DB |
2827 | /** |
2828 | * netdev_cap_txqueue - check if selected tx queue exceeds device queues | |
2829 | * @dev: network device | |
2830 | * @queue_index: given tx queue index | |
2831 | * | |
2832 | * Returns 0 if given tx queue index >= number of device tx queues, | |
2833 | * otherwise returns the originally passed tx queue index. | |
2834 | */ | |
2835 | static inline u16 netdev_cap_txqueue(struct net_device *dev, u16 queue_index) | |
2836 | { | |
2837 | if (unlikely(queue_index >= dev->real_num_tx_queues)) { | |
2838 | net_warn_ratelimited("%s selects TX queue %d, but real number of TX queues is %d\n", | |
2839 | dev->name, queue_index, | |
2840 | dev->real_num_tx_queues); | |
2841 | return 0; | |
2842 | } | |
2843 | ||
2844 | return queue_index; | |
2845 | } | |
2846 | ||
bea3348e SH |
2847 | /** |
2848 | * netif_running - test if up | |
2849 | * @dev: network device | |
2850 | * | |
2851 | * Test if the device has been brought up. | |
2852 | */ | |
4d29515f | 2853 | static inline bool netif_running(const struct net_device *dev) |
1da177e4 LT |
2854 | { |
2855 | return test_bit(__LINK_STATE_START, &dev->state); | |
2856 | } | |
2857 | ||
f25f4e44 PWJ |
2858 | /* |
2859 | * Routines to manage the subqueues on a device. We only need start | |
2860 | * stop, and a check if it's stopped. All other device management is | |
2861 | * done at the overall netdevice level. | |
2862 | * Also test the device if we're multiqueue. | |
2863 | */ | |
bea3348e SH |
2864 | |
2865 | /** | |
2866 | * netif_start_subqueue - allow sending packets on subqueue | |
2867 | * @dev: network device | |
2868 | * @queue_index: sub queue index | |
2869 | * | |
2870 | * Start individual transmit queue of a device with multiple transmit queues. | |
2871 | */ | |
f25f4e44 PWJ |
2872 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
2873 | { | |
fd2ea0a7 | 2874 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
2875 | |
2876 | netif_tx_start_queue(txq); | |
f25f4e44 PWJ |
2877 | } |
2878 | ||
bea3348e SH |
2879 | /** |
2880 | * netif_stop_subqueue - stop sending packets on subqueue | |
2881 | * @dev: network device | |
2882 | * @queue_index: sub queue index | |
2883 | * | |
2884 | * Stop individual transmit queue of a device with multiple transmit queues. | |
2885 | */ | |
f25f4e44 PWJ |
2886 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
2887 | { | |
fd2ea0a7 | 2888 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f | 2889 | netif_tx_stop_queue(txq); |
f25f4e44 PWJ |
2890 | } |
2891 | ||
bea3348e SH |
2892 | /** |
2893 | * netif_subqueue_stopped - test status of subqueue | |
2894 | * @dev: network device | |
2895 | * @queue_index: sub queue index | |
2896 | * | |
2897 | * Check individual transmit queue of a device with multiple transmit queues. | |
2898 | */ | |
4d29515f DM |
2899 | static inline bool __netif_subqueue_stopped(const struct net_device *dev, |
2900 | u16 queue_index) | |
f25f4e44 | 2901 | { |
fd2ea0a7 | 2902 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
2903 | |
2904 | return netif_tx_queue_stopped(txq); | |
f25f4e44 PWJ |
2905 | } |
2906 | ||
4d29515f DM |
2907 | static inline bool netif_subqueue_stopped(const struct net_device *dev, |
2908 | struct sk_buff *skb) | |
668f895a PE |
2909 | { |
2910 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
2911 | } | |
bea3348e | 2912 | |
46e5da40 | 2913 | void netif_wake_subqueue(struct net_device *dev, u16 queue_index); |
f25f4e44 | 2914 | |
537c00de | 2915 | #ifdef CONFIG_XPS |
53af53ae | 2916 | int netif_set_xps_queue(struct net_device *dev, const struct cpumask *mask, |
f629d208 | 2917 | u16 index); |
537c00de AD |
2918 | #else |
2919 | static inline int netif_set_xps_queue(struct net_device *dev, | |
3573540c | 2920 | const struct cpumask *mask, |
537c00de AD |
2921 | u16 index) |
2922 | { | |
2923 | return 0; | |
2924 | } | |
2925 | #endif | |
2926 | ||
5605c762 JP |
2927 | u16 __skb_tx_hash(const struct net_device *dev, struct sk_buff *skb, |
2928 | unsigned int num_tx_queues); | |
2929 | ||
a3d22a68 VZ |
2930 | /* |
2931 | * Returns a Tx hash for the given packet when dev->real_num_tx_queues is used | |
2932 | * as a distribution range limit for the returned value. | |
2933 | */ | |
2934 | static inline u16 skb_tx_hash(const struct net_device *dev, | |
0e001614 | 2935 | struct sk_buff *skb) |
a3d22a68 VZ |
2936 | { |
2937 | return __skb_tx_hash(dev, skb, dev->real_num_tx_queues); | |
2938 | } | |
2939 | ||
bea3348e SH |
2940 | /** |
2941 | * netif_is_multiqueue - test if device has multiple transmit queues | |
2942 | * @dev: network device | |
2943 | * | |
2944 | * Check if device has multiple transmit queues | |
bea3348e | 2945 | */ |
4d29515f | 2946 | static inline bool netif_is_multiqueue(const struct net_device *dev) |
f25f4e44 | 2947 | { |
a02cec21 | 2948 | return dev->num_tx_queues > 1; |
f25f4e44 | 2949 | } |
1da177e4 | 2950 | |
f629d208 | 2951 | int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq); |
f0796d5c | 2952 | |
a953be53 | 2953 | #ifdef CONFIG_SYSFS |
f629d208 | 2954 | int netif_set_real_num_rx_queues(struct net_device *dev, unsigned int rxq); |
62fe0b40 BH |
2955 | #else |
2956 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, | |
2957 | unsigned int rxq) | |
2958 | { | |
2959 | return 0; | |
2960 | } | |
2961 | #endif | |
2962 | ||
a953be53 MD |
2963 | #ifdef CONFIG_SYSFS |
2964 | static inline unsigned int get_netdev_rx_queue_index( | |
2965 | struct netdev_rx_queue *queue) | |
2966 | { | |
2967 | struct net_device *dev = queue->dev; | |
2968 | int index = queue - dev->_rx; | |
2969 | ||
2970 | BUG_ON(index >= dev->num_rx_queues); | |
2971 | return index; | |
2972 | } | |
2973 | #endif | |
2974 | ||
16917b87 | 2975 | #define DEFAULT_MAX_NUM_RSS_QUEUES (8) |
f629d208 | 2976 | int netif_get_num_default_rss_queues(void); |
16917b87 | 2977 | |
e6247027 ED |
2978 | enum skb_free_reason { |
2979 | SKB_REASON_CONSUMED, | |
2980 | SKB_REASON_DROPPED, | |
2981 | }; | |
2982 | ||
2983 | void __dev_kfree_skb_irq(struct sk_buff *skb, enum skb_free_reason reason); | |
2984 | void __dev_kfree_skb_any(struct sk_buff *skb, enum skb_free_reason reason); | |
1da177e4 | 2985 | |
e6247027 ED |
2986 | /* |
2987 | * It is not allowed to call kfree_skb() or consume_skb() from hardware | |
2988 | * interrupt context or with hardware interrupts being disabled. | |
2989 | * (in_irq() || irqs_disabled()) | |
2990 | * | |
2991 | * We provide four helpers that can be used in following contexts : | |
2992 | * | |
2993 | * dev_kfree_skb_irq(skb) when caller drops a packet from irq context, | |
2994 | * replacing kfree_skb(skb) | |
2995 | * | |
2996 | * dev_consume_skb_irq(skb) when caller consumes a packet from irq context. | |
2997 | * Typically used in place of consume_skb(skb) in TX completion path | |
2998 | * | |
2999 | * dev_kfree_skb_any(skb) when caller doesn't know its current irq context, | |
3000 | * replacing kfree_skb(skb) | |
3001 | * | |
3002 | * dev_consume_skb_any(skb) when caller doesn't know its current irq context, | |
3003 | * and consumed a packet. Used in place of consume_skb(skb) | |
1da177e4 | 3004 | */ |
e6247027 ED |
3005 | static inline void dev_kfree_skb_irq(struct sk_buff *skb) |
3006 | { | |
3007 | __dev_kfree_skb_irq(skb, SKB_REASON_DROPPED); | |
3008 | } | |
3009 | ||
3010 | static inline void dev_consume_skb_irq(struct sk_buff *skb) | |
3011 | { | |
3012 | __dev_kfree_skb_irq(skb, SKB_REASON_CONSUMED); | |
3013 | } | |
3014 | ||
3015 | static inline void dev_kfree_skb_any(struct sk_buff *skb) | |
3016 | { | |
3017 | __dev_kfree_skb_any(skb, SKB_REASON_DROPPED); | |
3018 | } | |
3019 | ||
3020 | static inline void dev_consume_skb_any(struct sk_buff *skb) | |
3021 | { | |
3022 | __dev_kfree_skb_any(skb, SKB_REASON_CONSUMED); | |
3023 | } | |
1da177e4 | 3024 | |
f629d208 JP |
3025 | int netif_rx(struct sk_buff *skb); |
3026 | int netif_rx_ni(struct sk_buff *skb); | |
04eb4489 | 3027 | int netif_receive_skb(struct sk_buff *skb); |
f629d208 JP |
3028 | gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb); |
3029 | void napi_gro_flush(struct napi_struct *napi, bool flush_old); | |
3030 | struct sk_buff *napi_get_frags(struct napi_struct *napi); | |
3031 | gro_result_t napi_gro_frags(struct napi_struct *napi); | |
bf5a755f JC |
3032 | struct packet_offload *gro_find_receive_by_type(__be16 type); |
3033 | struct packet_offload *gro_find_complete_by_type(__be16 type); | |
76620aaf HX |
3034 | |
3035 | static inline void napi_free_frags(struct napi_struct *napi) | |
3036 | { | |
3037 | kfree_skb(napi->skb); | |
3038 | napi->skb = NULL; | |
3039 | } | |
3040 | ||
f629d208 JP |
3041 | int netdev_rx_handler_register(struct net_device *dev, |
3042 | rx_handler_func_t *rx_handler, | |
3043 | void *rx_handler_data); | |
3044 | void netdev_rx_handler_unregister(struct net_device *dev); | |
3045 | ||
3046 | bool dev_valid_name(const char *name); | |
3047 | int dev_ioctl(struct net *net, unsigned int cmd, void __user *); | |
3048 | int dev_ethtool(struct net *net, struct ifreq *); | |
3049 | unsigned int dev_get_flags(const struct net_device *); | |
3050 | int __dev_change_flags(struct net_device *, unsigned int flags); | |
3051 | int dev_change_flags(struct net_device *, unsigned int); | |
cb178190 DM |
3052 | void __dev_notify_flags(struct net_device *, unsigned int old_flags, |
3053 | unsigned int gchanges); | |
f629d208 JP |
3054 | int dev_change_name(struct net_device *, const char *); |
3055 | int dev_set_alias(struct net_device *, const char *, size_t); | |
3056 | int dev_change_net_namespace(struct net_device *, struct net *, const char *); | |
3057 | int dev_set_mtu(struct net_device *, int); | |
3058 | void dev_set_group(struct net_device *, int); | |
3059 | int dev_set_mac_address(struct net_device *, struct sockaddr *); | |
3060 | int dev_change_carrier(struct net_device *, bool new_carrier); | |
3061 | int dev_get_phys_port_id(struct net_device *dev, | |
02637fce | 3062 | struct netdev_phys_item_id *ppid); |
db24a904 DA |
3063 | int dev_get_phys_port_name(struct net_device *dev, |
3064 | char *name, size_t len); | |
d746d707 | 3065 | int dev_change_proto_down(struct net_device *dev, bool proto_down); |
55a93b3e | 3066 | struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev); |
ce93718f DM |
3067 | struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, |
3068 | struct netdev_queue *txq, int *ret); | |
a0265d28 | 3069 | int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
f629d208 | 3070 | int dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
1ee481fb | 3071 | bool is_skb_forwardable(struct net_device *dev, struct sk_buff *skb); |
1da177e4 | 3072 | |
20380731 | 3073 | extern int netdev_budget; |
1da177e4 LT |
3074 | |
3075 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
f629d208 | 3076 | void netdev_run_todo(void); |
1da177e4 | 3077 | |
bea3348e SH |
3078 | /** |
3079 | * dev_put - release reference to device | |
3080 | * @dev: network device | |
3081 | * | |
9ef4429b | 3082 | * Release reference to device to allow it to be freed. |
bea3348e | 3083 | */ |
1da177e4 LT |
3084 | static inline void dev_put(struct net_device *dev) |
3085 | { | |
933393f5 | 3086 | this_cpu_dec(*dev->pcpu_refcnt); |
1da177e4 LT |
3087 | } |
3088 | ||
bea3348e SH |
3089 | /** |
3090 | * dev_hold - get reference to device | |
3091 | * @dev: network device | |
3092 | * | |
9ef4429b | 3093 | * Hold reference to device to keep it from being freed. |
bea3348e | 3094 | */ |
15333061 SH |
3095 | static inline void dev_hold(struct net_device *dev) |
3096 | { | |
933393f5 | 3097 | this_cpu_inc(*dev->pcpu_refcnt); |
15333061 | 3098 | } |
1da177e4 LT |
3099 | |
3100 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
3101 | * and _off may be called from IRQ context, but it is caller | |
3102 | * who is responsible for serialization of these calls. | |
b00055aa SR |
3103 | * |
3104 | * The name carrier is inappropriate, these functions should really be | |
3105 | * called netif_lowerlayer_*() because they represent the state of any | |
3106 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
3107 | */ |
3108 | ||
f629d208 JP |
3109 | void linkwatch_init_dev(struct net_device *dev); |
3110 | void linkwatch_fire_event(struct net_device *dev); | |
3111 | void linkwatch_forget_dev(struct net_device *dev); | |
1da177e4 | 3112 | |
bea3348e SH |
3113 | /** |
3114 | * netif_carrier_ok - test if carrier present | |
3115 | * @dev: network device | |
3116 | * | |
3117 | * Check if carrier is present on device | |
3118 | */ | |
4d29515f | 3119 | static inline bool netif_carrier_ok(const struct net_device *dev) |
1da177e4 LT |
3120 | { |
3121 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
3122 | } | |
3123 | ||
f629d208 | 3124 | unsigned long dev_trans_start(struct net_device *dev); |
9d21493b | 3125 | |
f629d208 | 3126 | void __netdev_watchdog_up(struct net_device *dev); |
1da177e4 | 3127 | |
f629d208 | 3128 | void netif_carrier_on(struct net_device *dev); |
1da177e4 | 3129 | |
f629d208 | 3130 | void netif_carrier_off(struct net_device *dev); |
1da177e4 | 3131 | |
bea3348e SH |
3132 | /** |
3133 | * netif_dormant_on - mark device as dormant. | |
3134 | * @dev: network device | |
3135 | * | |
3136 | * Mark device as dormant (as per RFC2863). | |
3137 | * | |
3138 | * The dormant state indicates that the relevant interface is not | |
3139 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
3140 | * in a "pending" state, waiting for some external event. For "on- | |
3141 | * demand" interfaces, this new state identifies the situation where the | |
3142 | * interface is waiting for events to place it in the up state. | |
3143 | * | |
3144 | */ | |
b00055aa SR |
3145 | static inline void netif_dormant_on(struct net_device *dev) |
3146 | { | |
3147 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
3148 | linkwatch_fire_event(dev); | |
3149 | } | |
3150 | ||
bea3348e SH |
3151 | /** |
3152 | * netif_dormant_off - set device as not dormant. | |
3153 | * @dev: network device | |
3154 | * | |
3155 | * Device is not in dormant state. | |
3156 | */ | |
b00055aa SR |
3157 | static inline void netif_dormant_off(struct net_device *dev) |
3158 | { | |
3159 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
3160 | linkwatch_fire_event(dev); | |
3161 | } | |
3162 | ||
bea3348e SH |
3163 | /** |
3164 | * netif_dormant - test if carrier present | |
3165 | * @dev: network device | |
3166 | * | |
3167 | * Check if carrier is present on device | |
3168 | */ | |
4d29515f | 3169 | static inline bool netif_dormant(const struct net_device *dev) |
b00055aa SR |
3170 | { |
3171 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
3172 | } | |
3173 | ||
3174 | ||
bea3348e SH |
3175 | /** |
3176 | * netif_oper_up - test if device is operational | |
3177 | * @dev: network device | |
3178 | * | |
3179 | * Check if carrier is operational | |
3180 | */ | |
4d29515f | 3181 | static inline bool netif_oper_up(const struct net_device *dev) |
d94d9fee | 3182 | { |
b00055aa SR |
3183 | return (dev->operstate == IF_OPER_UP || |
3184 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
3185 | } | |
3186 | ||
bea3348e SH |
3187 | /** |
3188 | * netif_device_present - is device available or removed | |
3189 | * @dev: network device | |
3190 | * | |
3191 | * Check if device has not been removed from system. | |
3192 | */ | |
4d29515f | 3193 | static inline bool netif_device_present(struct net_device *dev) |
1da177e4 LT |
3194 | { |
3195 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
3196 | } | |
3197 | ||
f629d208 | 3198 | void netif_device_detach(struct net_device *dev); |
1da177e4 | 3199 | |
f629d208 | 3200 | void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
3201 | |
3202 | /* | |
3203 | * Network interface message level settings | |
3204 | */ | |
1da177e4 LT |
3205 | |
3206 | enum { | |
3207 | NETIF_MSG_DRV = 0x0001, | |
3208 | NETIF_MSG_PROBE = 0x0002, | |
3209 | NETIF_MSG_LINK = 0x0004, | |
3210 | NETIF_MSG_TIMER = 0x0008, | |
3211 | NETIF_MSG_IFDOWN = 0x0010, | |
3212 | NETIF_MSG_IFUP = 0x0020, | |
3213 | NETIF_MSG_RX_ERR = 0x0040, | |
3214 | NETIF_MSG_TX_ERR = 0x0080, | |
3215 | NETIF_MSG_TX_QUEUED = 0x0100, | |
3216 | NETIF_MSG_INTR = 0x0200, | |
3217 | NETIF_MSG_TX_DONE = 0x0400, | |
3218 | NETIF_MSG_RX_STATUS = 0x0800, | |
3219 | NETIF_MSG_PKTDATA = 0x1000, | |
3220 | NETIF_MSG_HW = 0x2000, | |
3221 | NETIF_MSG_WOL = 0x4000, | |
3222 | }; | |
3223 | ||
3224 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
3225 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
3226 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
3227 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
3228 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
3229 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
3230 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
3231 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
3232 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
3233 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
3234 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
3235 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
3236 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
3237 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
3238 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
3239 | ||
3240 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
3241 | { | |
3242 | /* use default */ | |
3243 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
3244 | return default_msg_enable_bits; | |
3245 | if (debug_value == 0) /* no output */ | |
3246 | return 0; | |
3247 | /* set low N bits */ | |
3248 | return (1 << debug_value) - 1; | |
3249 | } | |
3250 | ||
c773e847 | 3251 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 3252 | { |
c773e847 DM |
3253 | spin_lock(&txq->_xmit_lock); |
3254 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
3255 | } |
3256 | ||
fd2ea0a7 DM |
3257 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
3258 | { | |
3259 | spin_lock_bh(&txq->_xmit_lock); | |
3260 | txq->xmit_lock_owner = smp_processor_id(); | |
3261 | } | |
3262 | ||
4d29515f | 3263 | static inline bool __netif_tx_trylock(struct netdev_queue *txq) |
c3f26a26 | 3264 | { |
4d29515f | 3265 | bool ok = spin_trylock(&txq->_xmit_lock); |
c3f26a26 DM |
3266 | if (likely(ok)) |
3267 | txq->xmit_lock_owner = smp_processor_id(); | |
3268 | return ok; | |
3269 | } | |
3270 | ||
3271 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
3272 | { | |
3273 | txq->xmit_lock_owner = -1; | |
3274 | spin_unlock(&txq->_xmit_lock); | |
3275 | } | |
3276 | ||
3277 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
3278 | { | |
3279 | txq->xmit_lock_owner = -1; | |
3280 | spin_unlock_bh(&txq->_xmit_lock); | |
3281 | } | |
3282 | ||
08baf561 ED |
3283 | static inline void txq_trans_update(struct netdev_queue *txq) |
3284 | { | |
3285 | if (txq->xmit_lock_owner != -1) | |
3286 | txq->trans_start = jiffies; | |
3287 | } | |
3288 | ||
d29f749e DJ |
3289 | /** |
3290 | * netif_tx_lock - grab network device transmit lock | |
3291 | * @dev: network device | |
d29f749e DJ |
3292 | * |
3293 | * Get network device transmit lock | |
3294 | */ | |
22dd7495 JHS |
3295 | static inline void netif_tx_lock(struct net_device *dev) |
3296 | { | |
e8a0464c | 3297 | unsigned int i; |
c3f26a26 | 3298 | int cpu; |
c773e847 | 3299 | |
c3f26a26 DM |
3300 | spin_lock(&dev->tx_global_lock); |
3301 | cpu = smp_processor_id(); | |
e8a0464c DM |
3302 | for (i = 0; i < dev->num_tx_queues; i++) { |
3303 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
3304 | |
3305 | /* We are the only thread of execution doing a | |
3306 | * freeze, but we have to grab the _xmit_lock in | |
3307 | * order to synchronize with threads which are in | |
3308 | * the ->hard_start_xmit() handler and already | |
3309 | * checked the frozen bit. | |
3310 | */ | |
e8a0464c | 3311 | __netif_tx_lock(txq, cpu); |
c3f26a26 DM |
3312 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
3313 | __netif_tx_unlock(txq); | |
e8a0464c | 3314 | } |
932ff279 HX |
3315 | } |
3316 | ||
3317 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
3318 | { | |
e8a0464c DM |
3319 | local_bh_disable(); |
3320 | netif_tx_lock(dev); | |
932ff279 HX |
3321 | } |
3322 | ||
932ff279 HX |
3323 | static inline void netif_tx_unlock(struct net_device *dev) |
3324 | { | |
e8a0464c DM |
3325 | unsigned int i; |
3326 | ||
3327 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3328 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c773e847 | 3329 | |
c3f26a26 DM |
3330 | /* No need to grab the _xmit_lock here. If the |
3331 | * queue is not stopped for another reason, we | |
3332 | * force a schedule. | |
3333 | */ | |
3334 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
7b3d3e4f | 3335 | netif_schedule_queue(txq); |
c3f26a26 DM |
3336 | } |
3337 | spin_unlock(&dev->tx_global_lock); | |
932ff279 HX |
3338 | } |
3339 | ||
3340 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
3341 | { | |
e8a0464c DM |
3342 | netif_tx_unlock(dev); |
3343 | local_bh_enable(); | |
932ff279 HX |
3344 | } |
3345 | ||
c773e847 | 3346 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 3347 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 3348 | __netif_tx_lock(txq, cpu); \ |
22dd7495 JHS |
3349 | } \ |
3350 | } | |
3351 | ||
5efeac44 EB |
3352 | #define HARD_TX_TRYLOCK(dev, txq) \ |
3353 | (((dev->features & NETIF_F_LLTX) == 0) ? \ | |
3354 | __netif_tx_trylock(txq) : \ | |
3355 | true ) | |
3356 | ||
c773e847 | 3357 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 3358 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 3359 | __netif_tx_unlock(txq); \ |
22dd7495 JHS |
3360 | } \ |
3361 | } | |
3362 | ||
1da177e4 LT |
3363 | static inline void netif_tx_disable(struct net_device *dev) |
3364 | { | |
fd2ea0a7 | 3365 | unsigned int i; |
c3f26a26 | 3366 | int cpu; |
fd2ea0a7 | 3367 | |
c3f26a26 DM |
3368 | local_bh_disable(); |
3369 | cpu = smp_processor_id(); | |
fd2ea0a7 DM |
3370 | for (i = 0; i < dev->num_tx_queues; i++) { |
3371 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
3372 | |
3373 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 3374 | netif_tx_stop_queue(txq); |
c3f26a26 | 3375 | __netif_tx_unlock(txq); |
fd2ea0a7 | 3376 | } |
c3f26a26 | 3377 | local_bh_enable(); |
1da177e4 LT |
3378 | } |
3379 | ||
e308a5d8 DM |
3380 | static inline void netif_addr_lock(struct net_device *dev) |
3381 | { | |
3382 | spin_lock(&dev->addr_list_lock); | |
3383 | } | |
3384 | ||
2429f7ac JP |
3385 | static inline void netif_addr_lock_nested(struct net_device *dev) |
3386 | { | |
25175ba5 VY |
3387 | int subclass = SINGLE_DEPTH_NESTING; |
3388 | ||
3389 | if (dev->netdev_ops->ndo_get_lock_subclass) | |
3390 | subclass = dev->netdev_ops->ndo_get_lock_subclass(dev); | |
3391 | ||
3392 | spin_lock_nested(&dev->addr_list_lock, subclass); | |
2429f7ac JP |
3393 | } |
3394 | ||
e308a5d8 DM |
3395 | static inline void netif_addr_lock_bh(struct net_device *dev) |
3396 | { | |
3397 | spin_lock_bh(&dev->addr_list_lock); | |
3398 | } | |
3399 | ||
3400 | static inline void netif_addr_unlock(struct net_device *dev) | |
3401 | { | |
3402 | spin_unlock(&dev->addr_list_lock); | |
3403 | } | |
3404 | ||
3405 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
3406 | { | |
3407 | spin_unlock_bh(&dev->addr_list_lock); | |
3408 | } | |
3409 | ||
f001fde5 | 3410 | /* |
31278e71 | 3411 | * dev_addrs walker. Should be used only for read access. Call with |
f001fde5 JP |
3412 | * rcu_read_lock held. |
3413 | */ | |
3414 | #define for_each_dev_addr(dev, ha) \ | |
31278e71 | 3415 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
f001fde5 | 3416 | |
1da177e4 LT |
3417 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
3418 | ||
f629d208 | 3419 | void ether_setup(struct net_device *dev); |
1da177e4 LT |
3420 | |
3421 | /* Support for loadable net-drivers */ | |
f629d208 | 3422 | struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, |
c835a677 | 3423 | unsigned char name_assign_type, |
f629d208 JP |
3424 | void (*setup)(struct net_device *), |
3425 | unsigned int txqs, unsigned int rxqs); | |
c835a677 TG |
3426 | #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \ |
3427 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, 1, 1) | |
36909ea4 | 3428 | |
c835a677 TG |
3429 | #define alloc_netdev_mq(sizeof_priv, name, name_assign_type, setup, count) \ |
3430 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, count, \ | |
3431 | count) | |
36909ea4 | 3432 | |
f629d208 JP |
3433 | int register_netdev(struct net_device *dev); |
3434 | void unregister_netdev(struct net_device *dev); | |
f001fde5 | 3435 | |
22bedad3 | 3436 | /* General hardware address lists handling functions */ |
f629d208 JP |
3437 | int __hw_addr_sync(struct netdev_hw_addr_list *to_list, |
3438 | struct netdev_hw_addr_list *from_list, int addr_len); | |
3439 | void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, | |
3440 | struct netdev_hw_addr_list *from_list, int addr_len); | |
670e5b8e AD |
3441 | int __hw_addr_sync_dev(struct netdev_hw_addr_list *list, |
3442 | struct net_device *dev, | |
3443 | int (*sync)(struct net_device *, const unsigned char *), | |
3444 | int (*unsync)(struct net_device *, | |
3445 | const unsigned char *)); | |
3446 | void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list, | |
3447 | struct net_device *dev, | |
3448 | int (*unsync)(struct net_device *, | |
3449 | const unsigned char *)); | |
f629d208 | 3450 | void __hw_addr_init(struct netdev_hw_addr_list *list); |
22bedad3 | 3451 | |
f001fde5 | 3452 | /* Functions used for device addresses handling */ |
f629d208 JP |
3453 | int dev_addr_add(struct net_device *dev, const unsigned char *addr, |
3454 | unsigned char addr_type); | |
3455 | int dev_addr_del(struct net_device *dev, const unsigned char *addr, | |
3456 | unsigned char addr_type); | |
f629d208 JP |
3457 | void dev_addr_flush(struct net_device *dev); |
3458 | int dev_addr_init(struct net_device *dev); | |
a748ee24 JP |
3459 | |
3460 | /* Functions used for unicast addresses handling */ | |
f629d208 JP |
3461 | int dev_uc_add(struct net_device *dev, const unsigned char *addr); |
3462 | int dev_uc_add_excl(struct net_device *dev, const unsigned char *addr); | |
3463 | int dev_uc_del(struct net_device *dev, const unsigned char *addr); | |
3464 | int dev_uc_sync(struct net_device *to, struct net_device *from); | |
3465 | int dev_uc_sync_multiple(struct net_device *to, struct net_device *from); | |
3466 | void dev_uc_unsync(struct net_device *to, struct net_device *from); | |
3467 | void dev_uc_flush(struct net_device *dev); | |
3468 | void dev_uc_init(struct net_device *dev); | |
f001fde5 | 3469 | |
670e5b8e AD |
3470 | /** |
3471 | * __dev_uc_sync - Synchonize device's unicast list | |
3472 | * @dev: device to sync | |
3473 | * @sync: function to call if address should be added | |
3474 | * @unsync: function to call if address should be removed | |
3475 | * | |
3476 | * Add newly added addresses to the interface, and release | |
3477 | * addresses that have been deleted. | |
3478 | **/ | |
3479 | static inline int __dev_uc_sync(struct net_device *dev, | |
3480 | int (*sync)(struct net_device *, | |
3481 | const unsigned char *), | |
3482 | int (*unsync)(struct net_device *, | |
3483 | const unsigned char *)) | |
3484 | { | |
3485 | return __hw_addr_sync_dev(&dev->uc, dev, sync, unsync); | |
3486 | } | |
3487 | ||
3488 | /** | |
e793c0f7 | 3489 | * __dev_uc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
3490 | * @dev: device to sync |
3491 | * @unsync: function to call if address should be removed | |
3492 | * | |
3493 | * Remove all addresses that were added to the device by dev_uc_sync(). | |
3494 | **/ | |
3495 | static inline void __dev_uc_unsync(struct net_device *dev, | |
3496 | int (*unsync)(struct net_device *, | |
3497 | const unsigned char *)) | |
3498 | { | |
3499 | __hw_addr_unsync_dev(&dev->uc, dev, unsync); | |
3500 | } | |
3501 | ||
22bedad3 | 3502 | /* Functions used for multicast addresses handling */ |
f629d208 JP |
3503 | int dev_mc_add(struct net_device *dev, const unsigned char *addr); |
3504 | int dev_mc_add_global(struct net_device *dev, const unsigned char *addr); | |
3505 | int dev_mc_add_excl(struct net_device *dev, const unsigned char *addr); | |
3506 | int dev_mc_del(struct net_device *dev, const unsigned char *addr); | |
3507 | int dev_mc_del_global(struct net_device *dev, const unsigned char *addr); | |
3508 | int dev_mc_sync(struct net_device *to, struct net_device *from); | |
3509 | int dev_mc_sync_multiple(struct net_device *to, struct net_device *from); | |
3510 | void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
3511 | void dev_mc_flush(struct net_device *dev); | |
3512 | void dev_mc_init(struct net_device *dev); | |
f001fde5 | 3513 | |
670e5b8e AD |
3514 | /** |
3515 | * __dev_mc_sync - Synchonize device's multicast list | |
3516 | * @dev: device to sync | |
3517 | * @sync: function to call if address should be added | |
3518 | * @unsync: function to call if address should be removed | |
3519 | * | |
3520 | * Add newly added addresses to the interface, and release | |
3521 | * addresses that have been deleted. | |
3522 | **/ | |
3523 | static inline int __dev_mc_sync(struct net_device *dev, | |
3524 | int (*sync)(struct net_device *, | |
3525 | const unsigned char *), | |
3526 | int (*unsync)(struct net_device *, | |
3527 | const unsigned char *)) | |
3528 | { | |
3529 | return __hw_addr_sync_dev(&dev->mc, dev, sync, unsync); | |
3530 | } | |
3531 | ||
3532 | /** | |
e793c0f7 | 3533 | * __dev_mc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
3534 | * @dev: device to sync |
3535 | * @unsync: function to call if address should be removed | |
3536 | * | |
3537 | * Remove all addresses that were added to the device by dev_mc_sync(). | |
3538 | **/ | |
3539 | static inline void __dev_mc_unsync(struct net_device *dev, | |
3540 | int (*unsync)(struct net_device *, | |
3541 | const unsigned char *)) | |
3542 | { | |
3543 | __hw_addr_unsync_dev(&dev->mc, dev, unsync); | |
3544 | } | |
3545 | ||
4417da66 | 3546 | /* Functions used for secondary unicast and multicast support */ |
f629d208 JP |
3547 | void dev_set_rx_mode(struct net_device *dev); |
3548 | void __dev_set_rx_mode(struct net_device *dev); | |
3549 | int dev_set_promiscuity(struct net_device *dev, int inc); | |
3550 | int dev_set_allmulti(struct net_device *dev, int inc); | |
3551 | void netdev_state_change(struct net_device *dev); | |
3552 | void netdev_notify_peers(struct net_device *dev); | |
3553 | void netdev_features_change(struct net_device *dev); | |
1da177e4 | 3554 | /* Load a device via the kmod */ |
f629d208 JP |
3555 | void dev_load(struct net *net, const char *name); |
3556 | struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, | |
3557 | struct rtnl_link_stats64 *storage); | |
3558 | void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64, | |
3559 | const struct net_device_stats *netdev_stats); | |
eeda3fd6 | 3560 | |
1da177e4 | 3561 | extern int netdev_max_backlog; |
3b098e2d | 3562 | extern int netdev_tstamp_prequeue; |
1da177e4 | 3563 | extern int weight_p; |
0a14842f | 3564 | extern int bpf_jit_enable; |
9ff162a8 | 3565 | |
f629d208 | 3566 | bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev); |
44a40855 VY |
3567 | struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev, |
3568 | struct list_head **iter); | |
f629d208 JP |
3569 | struct net_device *netdev_all_upper_get_next_dev_rcu(struct net_device *dev, |
3570 | struct list_head **iter); | |
8b5be856 | 3571 | |
44a40855 VY |
3572 | /* iterate through upper list, must be called under RCU read lock */ |
3573 | #define netdev_for_each_upper_dev_rcu(dev, updev, iter) \ | |
3574 | for (iter = &(dev)->adj_list.upper, \ | |
3575 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter)); \ | |
3576 | updev; \ | |
3577 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter))) | |
3578 | ||
8b5be856 | 3579 | /* iterate through upper list, must be called under RCU read lock */ |
2f268f12 VF |
3580 | #define netdev_for_each_all_upper_dev_rcu(dev, updev, iter) \ |
3581 | for (iter = &(dev)->all_adj_list.upper, \ | |
3582 | updev = netdev_all_upper_get_next_dev_rcu(dev, &(iter)); \ | |
3583 | updev; \ | |
3584 | updev = netdev_all_upper_get_next_dev_rcu(dev, &(iter))) | |
8b5be856 | 3585 | |
f629d208 JP |
3586 | void *netdev_lower_get_next_private(struct net_device *dev, |
3587 | struct list_head **iter); | |
3588 | void *netdev_lower_get_next_private_rcu(struct net_device *dev, | |
3589 | struct list_head **iter); | |
31088a11 VF |
3590 | |
3591 | #define netdev_for_each_lower_private(dev, priv, iter) \ | |
3592 | for (iter = (dev)->adj_list.lower.next, \ | |
3593 | priv = netdev_lower_get_next_private(dev, &(iter)); \ | |
3594 | priv; \ | |
3595 | priv = netdev_lower_get_next_private(dev, &(iter))) | |
3596 | ||
3597 | #define netdev_for_each_lower_private_rcu(dev, priv, iter) \ | |
3598 | for (iter = &(dev)->adj_list.lower, \ | |
3599 | priv = netdev_lower_get_next_private_rcu(dev, &(iter)); \ | |
3600 | priv; \ | |
3601 | priv = netdev_lower_get_next_private_rcu(dev, &(iter))) | |
3602 | ||
4085ebe8 VY |
3603 | void *netdev_lower_get_next(struct net_device *dev, |
3604 | struct list_head **iter); | |
3605 | #define netdev_for_each_lower_dev(dev, ldev, iter) \ | |
3606 | for (iter = &(dev)->adj_list.lower, \ | |
3607 | ldev = netdev_lower_get_next(dev, &(iter)); \ | |
3608 | ldev; \ | |
3609 | ldev = netdev_lower_get_next(dev, &(iter))) | |
3610 | ||
f629d208 | 3611 | void *netdev_adjacent_get_private(struct list_head *adj_list); |
e001bfad | 3612 | void *netdev_lower_get_first_private_rcu(struct net_device *dev); |
f629d208 JP |
3613 | struct net_device *netdev_master_upper_dev_get(struct net_device *dev); |
3614 | struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev); | |
3615 | int netdev_upper_dev_link(struct net_device *dev, struct net_device *upper_dev); | |
3616 | int netdev_master_upper_dev_link(struct net_device *dev, | |
9ff162a8 | 3617 | struct net_device *upper_dev); |
f629d208 JP |
3618 | int netdev_master_upper_dev_link_private(struct net_device *dev, |
3619 | struct net_device *upper_dev, | |
3620 | void *private); | |
3621 | void netdev_upper_dev_unlink(struct net_device *dev, | |
3622 | struct net_device *upper_dev); | |
5bb025fa | 3623 | void netdev_adjacent_rename_links(struct net_device *dev, char *oldname); |
f629d208 JP |
3624 | void *netdev_lower_dev_get_private(struct net_device *dev, |
3625 | struct net_device *lower_dev); | |
960fb622 ED |
3626 | |
3627 | /* RSS keys are 40 or 52 bytes long */ | |
3628 | #define NETDEV_RSS_KEY_LEN 52 | |
3629 | extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN]; | |
3630 | void netdev_rss_key_fill(void *buffer, size_t len); | |
3631 | ||
4085ebe8 VY |
3632 | int dev_get_nest_level(struct net_device *dev, |
3633 | bool (*type_check)(struct net_device *dev)); | |
f629d208 JP |
3634 | int skb_checksum_help(struct sk_buff *skb); |
3635 | struct sk_buff *__skb_gso_segment(struct sk_buff *skb, | |
3636 | netdev_features_t features, bool tx_path); | |
3637 | struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb, | |
3638 | netdev_features_t features); | |
12b0004d | 3639 | |
61bd3857 MS |
3640 | struct netdev_bonding_info { |
3641 | ifslave slave; | |
3642 | ifbond master; | |
3643 | }; | |
3644 | ||
3645 | struct netdev_notifier_bonding_info { | |
3646 | struct netdev_notifier_info info; /* must be first */ | |
3647 | struct netdev_bonding_info bonding_info; | |
3648 | }; | |
3649 | ||
3650 | void netdev_bonding_info_change(struct net_device *dev, | |
3651 | struct netdev_bonding_info *bonding_info); | |
3652 | ||
12b0004d CW |
3653 | static inline |
3654 | struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features) | |
3655 | { | |
3656 | return __skb_gso_segment(skb, features, true); | |
3657 | } | |
53d6471c | 3658 | __be16 skb_network_protocol(struct sk_buff *skb, int *depth); |
ec5f0615 PS |
3659 | |
3660 | static inline bool can_checksum_protocol(netdev_features_t features, | |
3661 | __be16 protocol) | |
3662 | { | |
3663 | return ((features & NETIF_F_GEN_CSUM) || | |
3664 | ((features & NETIF_F_V4_CSUM) && | |
3665 | protocol == htons(ETH_P_IP)) || | |
3666 | ((features & NETIF_F_V6_CSUM) && | |
3667 | protocol == htons(ETH_P_IPV6)) || | |
3668 | ((features & NETIF_F_FCOE_CRC) && | |
3669 | protocol == htons(ETH_P_FCOE))); | |
3670 | } | |
12b0004d | 3671 | |
fb286bb2 | 3672 | #ifdef CONFIG_BUG |
f629d208 | 3673 | void netdev_rx_csum_fault(struct net_device *dev); |
fb286bb2 HX |
3674 | #else |
3675 | static inline void netdev_rx_csum_fault(struct net_device *dev) | |
3676 | { | |
3677 | } | |
3678 | #endif | |
1da177e4 | 3679 | /* rx skb timestamps */ |
f629d208 JP |
3680 | void net_enable_timestamp(void); |
3681 | void net_disable_timestamp(void); | |
1da177e4 | 3682 | |
20380731 | 3683 | #ifdef CONFIG_PROC_FS |
f629d208 | 3684 | int __init dev_proc_init(void); |
900ff8c6 CW |
3685 | #else |
3686 | #define dev_proc_init() 0 | |
20380731 ACM |
3687 | #endif |
3688 | ||
4798248e | 3689 | static inline netdev_tx_t __netdev_start_xmit(const struct net_device_ops *ops, |
fa2dbdc2 DM |
3690 | struct sk_buff *skb, struct net_device *dev, |
3691 | bool more) | |
4798248e | 3692 | { |
fa2dbdc2 | 3693 | skb->xmit_more = more ? 1 : 0; |
0b725a2c | 3694 | return ops->ndo_start_xmit(skb, dev); |
4798248e DM |
3695 | } |
3696 | ||
10b3ad8c | 3697 | static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev, |
fa2dbdc2 | 3698 | struct netdev_queue *txq, bool more) |
4798248e DM |
3699 | { |
3700 | const struct net_device_ops *ops = dev->netdev_ops; | |
10b3ad8c | 3701 | int rc; |
4798248e | 3702 | |
fa2dbdc2 | 3703 | rc = __netdev_start_xmit(ops, skb, dev, more); |
10b3ad8c DM |
3704 | if (rc == NETDEV_TX_OK) |
3705 | txq_trans_update(txq); | |
3706 | ||
3707 | return rc; | |
4798248e DM |
3708 | } |
3709 | ||
42a2d923 LT |
3710 | int netdev_class_create_file_ns(struct class_attribute *class_attr, |
3711 | const void *ns); | |
3712 | void netdev_class_remove_file_ns(struct class_attribute *class_attr, | |
3713 | const void *ns); | |
58292cbe TH |
3714 | |
3715 | static inline int netdev_class_create_file(struct class_attribute *class_attr) | |
3716 | { | |
3717 | return netdev_class_create_file_ns(class_attr, NULL); | |
3718 | } | |
3719 | ||
3720 | static inline void netdev_class_remove_file(struct class_attribute *class_attr) | |
3721 | { | |
3722 | netdev_class_remove_file_ns(class_attr, NULL); | |
3723 | } | |
b8a9787e | 3724 | |
04600794 JB |
3725 | extern struct kobj_ns_type_operations net_ns_type_operations; |
3726 | ||
f629d208 | 3727 | const char *netdev_drivername(const struct net_device *dev); |
6579e57b | 3728 | |
f629d208 | 3729 | void linkwatch_run_queue(void); |
20380731 | 3730 | |
da08143b MK |
3731 | static inline netdev_features_t netdev_intersect_features(netdev_features_t f1, |
3732 | netdev_features_t f2) | |
3733 | { | |
3734 | if (f1 & NETIF_F_GEN_CSUM) | |
3735 | f1 |= (NETIF_F_ALL_CSUM & ~NETIF_F_GEN_CSUM); | |
3736 | if (f2 & NETIF_F_GEN_CSUM) | |
3737 | f2 |= (NETIF_F_ALL_CSUM & ~NETIF_F_GEN_CSUM); | |
3738 | f1 &= f2; | |
3739 | if (f1 & NETIF_F_GEN_CSUM) | |
3740 | f1 &= ~(NETIF_F_ALL_CSUM & ~NETIF_F_GEN_CSUM); | |
3741 | ||
3742 | return f1; | |
3743 | } | |
3744 | ||
c8f44aff MM |
3745 | static inline netdev_features_t netdev_get_wanted_features( |
3746 | struct net_device *dev) | |
5455c699 MM |
3747 | { |
3748 | return (dev->features & ~dev->hw_features) | dev->wanted_features; | |
3749 | } | |
c8f44aff MM |
3750 | netdev_features_t netdev_increment_features(netdev_features_t all, |
3751 | netdev_features_t one, netdev_features_t mask); | |
b0ce3508 ED |
3752 | |
3753 | /* Allow TSO being used on stacked device : | |
3754 | * Performing the GSO segmentation before last device | |
3755 | * is a performance improvement. | |
3756 | */ | |
3757 | static inline netdev_features_t netdev_add_tso_features(netdev_features_t features, | |
3758 | netdev_features_t mask) | |
3759 | { | |
3760 | return netdev_increment_features(features, NETIF_F_ALL_TSO, mask); | |
3761 | } | |
3762 | ||
6cb6a27c | 3763 | int __netdev_update_features(struct net_device *dev); |
5455c699 | 3764 | void netdev_update_features(struct net_device *dev); |
afe12cc8 | 3765 | void netdev_change_features(struct net_device *dev); |
7f353bf2 | 3766 | |
fc4a7489 PM |
3767 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
3768 | struct net_device *dev); | |
3769 | ||
e38f3025 TM |
3770 | netdev_features_t passthru_features_check(struct sk_buff *skb, |
3771 | struct net_device *dev, | |
3772 | netdev_features_t features); | |
c1e756bf | 3773 | netdev_features_t netif_skb_features(struct sk_buff *skb); |
58e998c6 | 3774 | |
4d29515f | 3775 | static inline bool net_gso_ok(netdev_features_t features, int gso_type) |
576a30eb | 3776 | { |
c8f44aff | 3777 | netdev_features_t feature = gso_type << NETIF_F_GSO_SHIFT; |
0345e186 MM |
3778 | |
3779 | /* check flags correspondence */ | |
3780 | BUILD_BUG_ON(SKB_GSO_TCPV4 != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT)); | |
3781 | BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_UFO >> NETIF_F_GSO_SHIFT)); | |
3782 | BUILD_BUG_ON(SKB_GSO_DODGY != (NETIF_F_GSO_ROBUST >> NETIF_F_GSO_SHIFT)); | |
3783 | BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT)); | |
3784 | BUILD_BUG_ON(SKB_GSO_TCPV6 != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT)); | |
3785 | BUILD_BUG_ON(SKB_GSO_FCOE != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
3786 | BUILD_BUG_ON(SKB_GSO_GRE != (NETIF_F_GSO_GRE >> NETIF_F_GSO_SHIFT)); |
3787 | BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT)); | |
3788 | BUILD_BUG_ON(SKB_GSO_IPIP != (NETIF_F_GSO_IPIP >> NETIF_F_GSO_SHIFT)); | |
3789 | BUILD_BUG_ON(SKB_GSO_SIT != (NETIF_F_GSO_SIT >> NETIF_F_GSO_SHIFT)); | |
3790 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT)); | |
3791 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT)); | |
e585f236 | 3792 | BUILD_BUG_ON(SKB_GSO_TUNNEL_REMCSUM != (NETIF_F_GSO_TUNNEL_REMCSUM >> NETIF_F_GSO_SHIFT)); |
0345e186 | 3793 | |
d6b4991a | 3794 | return (features & feature) == feature; |
576a30eb HX |
3795 | } |
3796 | ||
4d29515f | 3797 | static inline bool skb_gso_ok(struct sk_buff *skb, netdev_features_t features) |
bcd76111 | 3798 | { |
278b2513 | 3799 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
21dc3301 | 3800 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
bcd76111 HX |
3801 | } |
3802 | ||
8b86a61d | 3803 | static inline bool netif_needs_gso(struct sk_buff *skb, |
4d29515f | 3804 | netdev_features_t features) |
7967168c | 3805 | { |
fc741216 | 3806 | return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || |
cdbee74c YZ |
3807 | unlikely((skb->ip_summed != CHECKSUM_PARTIAL) && |
3808 | (skb->ip_summed != CHECKSUM_UNNECESSARY))); | |
7967168c HX |
3809 | } |
3810 | ||
82cc1a7a PWJ |
3811 | static inline void netif_set_gso_max_size(struct net_device *dev, |
3812 | unsigned int size) | |
3813 | { | |
3814 | dev->gso_max_size = size; | |
3815 | } | |
3816 | ||
7a7ffbab WCC |
3817 | static inline void skb_gso_error_unwind(struct sk_buff *skb, __be16 protocol, |
3818 | int pulled_hlen, u16 mac_offset, | |
3819 | int mac_len) | |
3820 | { | |
3821 | skb->protocol = protocol; | |
3822 | skb->encapsulation = 1; | |
3823 | skb_push(skb, pulled_hlen); | |
3824 | skb_reset_transport_header(skb); | |
3825 | skb->mac_header = mac_offset; | |
3826 | skb->network_header = skb->mac_header + mac_len; | |
3827 | skb->mac_len = mac_len; | |
3828 | } | |
3829 | ||
a6cc0cfa JF |
3830 | static inline bool netif_is_macvlan(struct net_device *dev) |
3831 | { | |
3832 | return dev->priv_flags & IFF_MACVLAN; | |
3833 | } | |
3834 | ||
2f33e7d5 MB |
3835 | static inline bool netif_is_macvlan_port(struct net_device *dev) |
3836 | { | |
3837 | return dev->priv_flags & IFF_MACVLAN_PORT; | |
3838 | } | |
3839 | ||
5933fea7 MB |
3840 | static inline bool netif_is_ipvlan(struct net_device *dev) |
3841 | { | |
3842 | return dev->priv_flags & IFF_IPVLAN_SLAVE; | |
3843 | } | |
3844 | ||
3845 | static inline bool netif_is_ipvlan_port(struct net_device *dev) | |
3846 | { | |
3847 | return dev->priv_flags & IFF_IPVLAN_MASTER; | |
3848 | } | |
3849 | ||
8a7fbfab | 3850 | static inline bool netif_is_bond_master(struct net_device *dev) |
3851 | { | |
3852 | return dev->flags & IFF_MASTER && dev->priv_flags & IFF_BONDING; | |
3853 | } | |
3854 | ||
4d29515f | 3855 | static inline bool netif_is_bond_slave(struct net_device *dev) |
1765a575 JP |
3856 | { |
3857 | return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING; | |
3858 | } | |
3859 | ||
3bdc0eba BG |
3860 | static inline bool netif_supports_nofcs(struct net_device *dev) |
3861 | { | |
3862 | return dev->priv_flags & IFF_SUPP_NOFCS; | |
3863 | } | |
3864 | ||
007979ea | 3865 | static inline bool netif_is_l3_master(const struct net_device *dev) |
4e3c8992 | 3866 | { |
007979ea | 3867 | return dev->priv_flags & IFF_L3MDEV_MASTER; |
4e3c8992 DA |
3868 | } |
3869 | ||
fee6d4c7 DA |
3870 | static inline bool netif_is_l3_slave(const struct net_device *dev) |
3871 | { | |
3872 | return dev->priv_flags & IFF_L3MDEV_SLAVE; | |
3873 | } | |
3874 | ||
0894ae3f JP |
3875 | static inline bool netif_is_bridge_master(const struct net_device *dev) |
3876 | { | |
3877 | return dev->priv_flags & IFF_EBRIDGE; | |
3878 | } | |
3879 | ||
28f9ee22 VY |
3880 | static inline bool netif_is_bridge_port(const struct net_device *dev) |
3881 | { | |
3882 | return dev->priv_flags & IFF_BRIDGE_PORT; | |
3883 | } | |
3884 | ||
35d4e172 JP |
3885 | static inline bool netif_is_ovs_master(const struct net_device *dev) |
3886 | { | |
3887 | return dev->priv_flags & IFF_OPENVSWITCH; | |
3888 | } | |
3889 | ||
02875878 ED |
3890 | /* This device needs to keep skb dst for qdisc enqueue or ndo_start_xmit() */ |
3891 | static inline void netif_keep_dst(struct net_device *dev) | |
3892 | { | |
3893 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM); | |
3894 | } | |
3895 | ||
505d4f73 | 3896 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 | 3897 | |
571ba423 JP |
3898 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ |
3899 | ||
3900 | /* netdev_printk helpers, similar to dev_printk */ | |
3901 | ||
3902 | static inline const char *netdev_name(const struct net_device *dev) | |
3903 | { | |
c6f854d5 VF |
3904 | if (!dev->name[0] || strchr(dev->name, '%')) |
3905 | return "(unnamed net_device)"; | |
571ba423 JP |
3906 | return dev->name; |
3907 | } | |
3908 | ||
ccc7f496 VF |
3909 | static inline const char *netdev_reg_state(const struct net_device *dev) |
3910 | { | |
3911 | switch (dev->reg_state) { | |
3912 | case NETREG_UNINITIALIZED: return " (uninitialized)"; | |
3913 | case NETREG_REGISTERED: return ""; | |
3914 | case NETREG_UNREGISTERING: return " (unregistering)"; | |
3915 | case NETREG_UNREGISTERED: return " (unregistered)"; | |
3916 | case NETREG_RELEASED: return " (released)"; | |
3917 | case NETREG_DUMMY: return " (dummy)"; | |
3918 | } | |
3919 | ||
3920 | WARN_ONCE(1, "%s: unknown reg_state %d\n", dev->name, dev->reg_state); | |
3921 | return " (unknown)"; | |
3922 | } | |
3923 | ||
f629d208 | 3924 | __printf(3, 4) |
6ea754eb JP |
3925 | void netdev_printk(const char *level, const struct net_device *dev, |
3926 | const char *format, ...); | |
f629d208 | 3927 | __printf(2, 3) |
6ea754eb | 3928 | void netdev_emerg(const struct net_device *dev, const char *format, ...); |
f629d208 | 3929 | __printf(2, 3) |
6ea754eb | 3930 | void netdev_alert(const struct net_device *dev, const char *format, ...); |
f629d208 | 3931 | __printf(2, 3) |
6ea754eb | 3932 | void netdev_crit(const struct net_device *dev, const char *format, ...); |
f629d208 | 3933 | __printf(2, 3) |
6ea754eb | 3934 | void netdev_err(const struct net_device *dev, const char *format, ...); |
f629d208 | 3935 | __printf(2, 3) |
6ea754eb | 3936 | void netdev_warn(const struct net_device *dev, const char *format, ...); |
f629d208 | 3937 | __printf(2, 3) |
6ea754eb | 3938 | void netdev_notice(const struct net_device *dev, const char *format, ...); |
f629d208 | 3939 | __printf(2, 3) |
6ea754eb | 3940 | void netdev_info(const struct net_device *dev, const char *format, ...); |
571ba423 | 3941 | |
8909c9ad VK |
3942 | #define MODULE_ALIAS_NETDEV(device) \ |
3943 | MODULE_ALIAS("netdev-" device) | |
3944 | ||
b558c96f | 3945 | #if defined(CONFIG_DYNAMIC_DEBUG) |
571ba423 JP |
3946 | #define netdev_dbg(__dev, format, args...) \ |
3947 | do { \ | |
ffa10cb4 | 3948 | dynamic_netdev_dbg(__dev, format, ##args); \ |
571ba423 | 3949 | } while (0) |
b558c96f JC |
3950 | #elif defined(DEBUG) |
3951 | #define netdev_dbg(__dev, format, args...) \ | |
3952 | netdev_printk(KERN_DEBUG, __dev, format, ##args) | |
571ba423 JP |
3953 | #else |
3954 | #define netdev_dbg(__dev, format, args...) \ | |
3955 | ({ \ | |
3956 | if (0) \ | |
3957 | netdev_printk(KERN_DEBUG, __dev, format, ##args); \ | |
571ba423 JP |
3958 | }) |
3959 | #endif | |
3960 | ||
3961 | #if defined(VERBOSE_DEBUG) | |
3962 | #define netdev_vdbg netdev_dbg | |
3963 | #else | |
3964 | ||
3965 | #define netdev_vdbg(dev, format, args...) \ | |
3966 | ({ \ | |
3967 | if (0) \ | |
3968 | netdev_printk(KERN_DEBUG, dev, format, ##args); \ | |
3969 | 0; \ | |
3970 | }) | |
3971 | #endif | |
3972 | ||
3973 | /* | |
3974 | * netdev_WARN() acts like dev_printk(), but with the key difference | |
3975 | * of using a WARN/WARN_ON to get the message out, including the | |
3976 | * file/line information and a backtrace. | |
3977 | */ | |
3978 | #define netdev_WARN(dev, format, args...) \ | |
ccc7f496 VF |
3979 | WARN(1, "netdevice: %s%s\n" format, netdev_name(dev), \ |
3980 | netdev_reg_state(dev), ##args) | |
571ba423 | 3981 | |
b3d95c5c JP |
3982 | /* netif printk helpers, similar to netdev_printk */ |
3983 | ||
3984 | #define netif_printk(priv, type, level, dev, fmt, args...) \ | |
3985 | do { \ | |
3986 | if (netif_msg_##type(priv)) \ | |
3987 | netdev_printk(level, (dev), fmt, ##args); \ | |
3988 | } while (0) | |
3989 | ||
f45f4321 JP |
3990 | #define netif_level(level, priv, type, dev, fmt, args...) \ |
3991 | do { \ | |
3992 | if (netif_msg_##type(priv)) \ | |
3993 | netdev_##level(dev, fmt, ##args); \ | |
3994 | } while (0) | |
3995 | ||
b3d95c5c | 3996 | #define netif_emerg(priv, type, dev, fmt, args...) \ |
f45f4321 | 3997 | netif_level(emerg, priv, type, dev, fmt, ##args) |
b3d95c5c | 3998 | #define netif_alert(priv, type, dev, fmt, args...) \ |
f45f4321 | 3999 | netif_level(alert, priv, type, dev, fmt, ##args) |
b3d95c5c | 4000 | #define netif_crit(priv, type, dev, fmt, args...) \ |
f45f4321 | 4001 | netif_level(crit, priv, type, dev, fmt, ##args) |
b3d95c5c | 4002 | #define netif_err(priv, type, dev, fmt, args...) \ |
f45f4321 | 4003 | netif_level(err, priv, type, dev, fmt, ##args) |
b3d95c5c | 4004 | #define netif_warn(priv, type, dev, fmt, args...) \ |
f45f4321 | 4005 | netif_level(warn, priv, type, dev, fmt, ##args) |
b3d95c5c | 4006 | #define netif_notice(priv, type, dev, fmt, args...) \ |
f45f4321 | 4007 | netif_level(notice, priv, type, dev, fmt, ##args) |
b3d95c5c | 4008 | #define netif_info(priv, type, dev, fmt, args...) \ |
f45f4321 | 4009 | netif_level(info, priv, type, dev, fmt, ##args) |
b3d95c5c | 4010 | |
0053ea9c | 4011 | #if defined(CONFIG_DYNAMIC_DEBUG) |
b3d95c5c JP |
4012 | #define netif_dbg(priv, type, netdev, format, args...) \ |
4013 | do { \ | |
4014 | if (netif_msg_##type(priv)) \ | |
b5fb0a03 | 4015 | dynamic_netdev_dbg(netdev, format, ##args); \ |
b3d95c5c | 4016 | } while (0) |
0053ea9c JP |
4017 | #elif defined(DEBUG) |
4018 | #define netif_dbg(priv, type, dev, format, args...) \ | |
4019 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args) | |
b3d95c5c JP |
4020 | #else |
4021 | #define netif_dbg(priv, type, dev, format, args...) \ | |
4022 | ({ \ | |
4023 | if (0) \ | |
4024 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ | |
4025 | 0; \ | |
4026 | }) | |
4027 | #endif | |
4028 | ||
4029 | #if defined(VERBOSE_DEBUG) | |
bcfcc450 | 4030 | #define netif_vdbg netif_dbg |
b3d95c5c JP |
4031 | #else |
4032 | #define netif_vdbg(priv, type, dev, format, args...) \ | |
4033 | ({ \ | |
4034 | if (0) \ | |
a4ed89cb | 4035 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
b3d95c5c JP |
4036 | 0; \ |
4037 | }) | |
4038 | #endif | |
571ba423 | 4039 | |
900ff8c6 CW |
4040 | /* |
4041 | * The list of packet types we will receive (as opposed to discard) | |
4042 | * and the routines to invoke. | |
4043 | * | |
4044 | * Why 16. Because with 16 the only overlap we get on a hash of the | |
4045 | * low nibble of the protocol value is RARP/SNAP/X.25. | |
4046 | * | |
4047 | * NOTE: That is no longer true with the addition of VLAN tags. Not | |
4048 | * sure which should go first, but I bet it won't make much | |
4049 | * difference if we are running VLANs. The good news is that | |
4050 | * this protocol won't be in the list unless compiled in, so | |
4051 | * the average user (w/out VLANs) will not be adversely affected. | |
4052 | * --BLG | |
4053 | * | |
4054 | * 0800 IP | |
4055 | * 8100 802.1Q VLAN | |
4056 | * 0001 802.3 | |
4057 | * 0002 AX.25 | |
4058 | * 0004 802.2 | |
4059 | * 8035 RARP | |
4060 | * 0005 SNAP | |
4061 | * 0805 X.25 | |
4062 | * 0806 ARP | |
4063 | * 8137 IPX | |
4064 | * 0009 Localtalk | |
4065 | * 86DD IPv6 | |
4066 | */ | |
4067 | #define PTYPE_HASH_SIZE (16) | |
4068 | #define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) | |
4069 | ||
385a154c | 4070 | #endif /* _LINUX_NETDEVICE_H */ |