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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> |
e4c6734e | 54 | #include <uapi/linux/pkt_cls.h> |
59cc1f61 | 55 | #include <linux/hashtable.h> |
a59e2ecb | 56 | |
115c1d6e | 57 | struct netpoll_info; |
313162d0 | 58 | struct device; |
c1f19b51 | 59 | struct phy_device; |
704232c2 JB |
60 | /* 802.11 specific */ |
61 | struct wireless_dev; | |
98a18b6f AA |
62 | /* 802.15.4 specific */ |
63 | struct wpan_dev; | |
03c57747 | 64 | struct mpls_dev; |
7c46a640 AD |
65 | /* UDP Tunnel offloads */ |
66 | struct udp_tunnel_info; | |
a7862b45 | 67 | struct bpf_prog; |
1da177e4 | 68 | |
f629d208 JP |
69 | void netdev_set_default_ethtool_ops(struct net_device *dev, |
70 | const struct ethtool_ops *ops); | |
d07d7507 | 71 | |
9a1654ba JP |
72 | /* Backlog congestion levels */ |
73 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
74 | #define NET_RX_DROP 1 /* packet dropped */ | |
75 | ||
572a9d7b PM |
76 | /* |
77 | * Transmit return codes: transmit return codes originate from three different | |
78 | * namespaces: | |
79 | * | |
80 | * - qdisc return codes | |
81 | * - driver transmit return codes | |
82 | * - errno values | |
83 | * | |
84 | * Drivers are allowed to return any one of those in their hard_start_xmit() | |
85 | * function. Real network devices commonly used with qdiscs should only return | |
86 | * the driver transmit return codes though - when qdiscs are used, the actual | |
87 | * transmission happens asynchronously, so the value is not propagated to | |
5e82b4b2 BH |
88 | * higher layers. Virtual network devices transmit synchronously; in this case |
89 | * the driver transmit return codes are consumed by dev_queue_xmit(), and all | |
572a9d7b PM |
90 | * others are propagated to higher layers. |
91 | */ | |
92 | ||
93 | /* qdisc ->enqueue() return codes. */ | |
94 | #define NET_XMIT_SUCCESS 0x00 | |
9a1654ba JP |
95 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
96 | #define NET_XMIT_CN 0x02 /* congestion notification */ | |
9a1654ba | 97 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ |
1da177e4 | 98 | |
b9df3cb8 GR |
99 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
100 | * indicates that the device will soon be dropping packets, or already drops | |
101 | * some packets of the same priority; prompting us to send less aggressively. */ | |
572a9d7b | 102 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
1da177e4 LT |
103 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
104 | ||
dc1f8bf6 | 105 | /* Driver transmit return codes */ |
9a1654ba | 106 | #define NETDEV_TX_MASK 0xf0 |
572a9d7b | 107 | |
dc1f8bf6 | 108 | enum netdev_tx { |
572a9d7b | 109 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
9a1654ba JP |
110 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
111 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ | |
dc1f8bf6 SH |
112 | }; |
113 | typedef enum netdev_tx netdev_tx_t; | |
114 | ||
9a1654ba JP |
115 | /* |
116 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; | |
117 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. | |
118 | */ | |
119 | static inline bool dev_xmit_complete(int rc) | |
120 | { | |
121 | /* | |
122 | * Positive cases with an skb consumed by a driver: | |
123 | * - successful transmission (rc == NETDEV_TX_OK) | |
124 | * - error while transmitting (rc < 0) | |
125 | * - error while queueing to a different device (rc & NET_XMIT_MASK) | |
126 | */ | |
127 | if (likely(rc < NET_XMIT_MASK)) | |
128 | return true; | |
129 | ||
130 | return false; | |
131 | } | |
132 | ||
1da177e4 | 133 | /* |
5e82b4b2 | 134 | * Compute the worst-case header length according to the protocols |
1da177e4 LT |
135 | * used. |
136 | */ | |
fe2918b0 | 137 | |
c0eb4540 KS |
138 | #if defined(CONFIG_HYPERV_NET) |
139 | # define LL_MAX_HEADER 128 | |
140 | #elif defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) | |
8388e3da DM |
141 | # if defined(CONFIG_MAC80211_MESH) |
142 | # define LL_MAX_HEADER 128 | |
143 | # else | |
144 | # define LL_MAX_HEADER 96 | |
145 | # endif | |
1da177e4 | 146 | #else |
8388e3da | 147 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
148 | #endif |
149 | ||
d11ead75 BH |
150 | #if !IS_ENABLED(CONFIG_NET_IPIP) && !IS_ENABLED(CONFIG_NET_IPGRE) && \ |
151 | !IS_ENABLED(CONFIG_IPV6_SIT) && !IS_ENABLED(CONFIG_IPV6_TUNNEL) | |
1da177e4 LT |
152 | #define MAX_HEADER LL_MAX_HEADER |
153 | #else | |
154 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
155 | #endif | |
156 | ||
157 | /* | |
be1f3c2c BH |
158 | * Old network device statistics. Fields are native words |
159 | * (unsigned long) so they can be read and written atomically. | |
1da177e4 | 160 | */ |
fe2918b0 | 161 | |
d94d9fee | 162 | struct net_device_stats { |
3cfde79c BH |
163 | unsigned long rx_packets; |
164 | unsigned long tx_packets; | |
165 | unsigned long rx_bytes; | |
166 | unsigned long tx_bytes; | |
167 | unsigned long rx_errors; | |
168 | unsigned long tx_errors; | |
169 | unsigned long rx_dropped; | |
170 | unsigned long tx_dropped; | |
171 | unsigned long multicast; | |
1da177e4 | 172 | unsigned long collisions; |
1da177e4 | 173 | unsigned long rx_length_errors; |
3cfde79c BH |
174 | unsigned long rx_over_errors; |
175 | unsigned long rx_crc_errors; | |
176 | unsigned long rx_frame_errors; | |
177 | unsigned long rx_fifo_errors; | |
178 | unsigned long rx_missed_errors; | |
1da177e4 LT |
179 | unsigned long tx_aborted_errors; |
180 | unsigned long tx_carrier_errors; | |
181 | unsigned long tx_fifo_errors; | |
182 | unsigned long tx_heartbeat_errors; | |
183 | unsigned long tx_window_errors; | |
1da177e4 LT |
184 | unsigned long rx_compressed; |
185 | unsigned long tx_compressed; | |
186 | }; | |
187 | ||
1da177e4 LT |
188 | |
189 | #include <linux/cache.h> | |
190 | #include <linux/skbuff.h> | |
191 | ||
adc9300e | 192 | #ifdef CONFIG_RPS |
c5905afb IM |
193 | #include <linux/static_key.h> |
194 | extern struct static_key rps_needed; | |
adc9300e ED |
195 | #endif |
196 | ||
1da177e4 LT |
197 | struct neighbour; |
198 | struct neigh_parms; | |
199 | struct sk_buff; | |
200 | ||
f001fde5 JP |
201 | struct netdev_hw_addr { |
202 | struct list_head list; | |
203 | unsigned char addr[MAX_ADDR_LEN]; | |
204 | unsigned char type; | |
ccffad25 JP |
205 | #define NETDEV_HW_ADDR_T_LAN 1 |
206 | #define NETDEV_HW_ADDR_T_SAN 2 | |
207 | #define NETDEV_HW_ADDR_T_SLAVE 3 | |
208 | #define NETDEV_HW_ADDR_T_UNICAST 4 | |
22bedad3 | 209 | #define NETDEV_HW_ADDR_T_MULTICAST 5 |
22bedad3 | 210 | bool global_use; |
4cd729b0 | 211 | int sync_cnt; |
8f8f103d | 212 | int refcount; |
4543fbef | 213 | int synced; |
f001fde5 JP |
214 | struct rcu_head rcu_head; |
215 | }; | |
216 | ||
31278e71 JP |
217 | struct netdev_hw_addr_list { |
218 | struct list_head list; | |
219 | int count; | |
220 | }; | |
221 | ||
22bedad3 JP |
222 | #define netdev_hw_addr_list_count(l) ((l)->count) |
223 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) | |
224 | #define netdev_hw_addr_list_for_each(ha, l) \ | |
225 | list_for_each_entry(ha, &(l)->list, list) | |
32e7bfc4 | 226 | |
22bedad3 JP |
227 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
228 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) | |
229 | #define netdev_for_each_uc_addr(ha, dev) \ | |
230 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) | |
6683ece3 | 231 | |
22bedad3 JP |
232 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
233 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) | |
18e225f2 | 234 | #define netdev_for_each_mc_addr(ha, dev) \ |
22bedad3 | 235 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
6683ece3 | 236 | |
d94d9fee | 237 | struct hh_cache { |
f6b72b62 | 238 | u16 hh_len; |
5c25f686 | 239 | u16 __pad; |
3644f0ce | 240 | seqlock_t hh_lock; |
1da177e4 LT |
241 | |
242 | /* cached hardware header; allow for machine alignment needs. */ | |
243 | #define HH_DATA_MOD 16 | |
244 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 245 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
246 | #define HH_DATA_ALIGN(__len) \ |
247 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
248 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
249 | }; | |
250 | ||
5e82b4b2 | 251 | /* Reserve HH_DATA_MOD byte-aligned hard_header_len, but at least that much. |
1da177e4 LT |
252 | * Alternative is: |
253 | * dev->hard_header_len ? (dev->hard_header_len + | |
254 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
255 | * | |
256 | * We could use other alignment values, but we must maintain the | |
257 | * relationship HH alignment <= LL alignment. | |
258 | */ | |
259 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 260 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 261 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 | 262 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 263 | |
3b04ddde SH |
264 | struct header_ops { |
265 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
266 | unsigned short type, const void *daddr, | |
95c96174 | 267 | const void *saddr, unsigned int len); |
3b04ddde | 268 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); |
e69dd336 | 269 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh, __be16 type); |
3b04ddde SH |
270 | void (*cache_update)(struct hh_cache *hh, |
271 | const struct net_device *dev, | |
272 | const unsigned char *haddr); | |
2793a23a | 273 | bool (*validate)(const char *ll_header, unsigned int len); |
3b04ddde SH |
274 | }; |
275 | ||
1da177e4 | 276 | /* These flag bits are private to the generic network queueing |
5e82b4b2 | 277 | * layer; they may not be explicitly referenced by any other |
1da177e4 LT |
278 | * code. |
279 | */ | |
280 | ||
d94d9fee | 281 | enum netdev_state_t { |
1da177e4 LT |
282 | __LINK_STATE_START, |
283 | __LINK_STATE_PRESENT, | |
1da177e4 | 284 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
285 | __LINK_STATE_LINKWATCH_PENDING, |
286 | __LINK_STATE_DORMANT, | |
1da177e4 LT |
287 | }; |
288 | ||
289 | ||
290 | /* | |
5e82b4b2 | 291 | * This structure holds boot-time configured netdevice settings. They |
fe2918b0 | 292 | * are then used in the device probing. |
1da177e4 LT |
293 | */ |
294 | struct netdev_boot_setup { | |
295 | char name[IFNAMSIZ]; | |
296 | struct ifmap map; | |
297 | }; | |
298 | #define NETDEV_BOOT_SETUP_MAX 8 | |
299 | ||
f629d208 | 300 | int __init netdev_boot_setup(char *str); |
1da177e4 | 301 | |
bea3348e SH |
302 | /* |
303 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
304 | */ | |
305 | struct napi_struct { | |
306 | /* The poll_list must only be managed by the entity which | |
307 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
308 | * whoever atomically sets that bit can add this napi_struct | |
5e82b4b2 | 309 | * to the per-CPU poll_list, and whoever clears that bit |
bea3348e SH |
310 | * can remove from the list right before clearing the bit. |
311 | */ | |
312 | struct list_head poll_list; | |
313 | ||
314 | unsigned long state; | |
315 | int weight; | |
404f7c9e | 316 | unsigned int gro_count; |
bea3348e SH |
317 | int (*poll)(struct napi_struct *, int); |
318 | #ifdef CONFIG_NETPOLL | |
bea3348e | 319 | int poll_owner; |
bea3348e | 320 | #endif |
5d38a079 | 321 | struct net_device *dev; |
d565b0a1 | 322 | struct sk_buff *gro_list; |
5d38a079 | 323 | struct sk_buff *skb; |
3b47d303 | 324 | struct hrtimer timer; |
404f7c9e | 325 | struct list_head dev_list; |
af12fa6e ET |
326 | struct hlist_node napi_hash_node; |
327 | unsigned int napi_id; | |
bea3348e SH |
328 | }; |
329 | ||
d94d9fee | 330 | enum { |
bea3348e | 331 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
a0a46196 | 332 | NAPI_STATE_DISABLE, /* Disable pending */ |
7b363e44 | 333 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
d64b5e85 ED |
334 | NAPI_STATE_HASHED, /* In NAPI hash (busy polling possible) */ |
335 | NAPI_STATE_NO_BUSY_POLL,/* Do not add in napi_hash, no busy polling */ | |
217f6974 ED |
336 | NAPI_STATE_IN_BUSY_POLL,/* sk_busy_loop() owns this NAPI */ |
337 | }; | |
338 | ||
339 | enum { | |
340 | NAPIF_STATE_SCHED = (1UL << NAPI_STATE_SCHED), | |
341 | NAPIF_STATE_DISABLE = (1UL << NAPI_STATE_DISABLE), | |
342 | NAPIF_STATE_NPSVC = (1UL << NAPI_STATE_NPSVC), | |
343 | NAPIF_STATE_HASHED = (1UL << NAPI_STATE_HASHED), | |
344 | NAPIF_STATE_NO_BUSY_POLL = (1UL << NAPI_STATE_NO_BUSY_POLL), | |
345 | NAPIF_STATE_IN_BUSY_POLL = (1UL << NAPI_STATE_IN_BUSY_POLL), | |
bea3348e SH |
346 | }; |
347 | ||
5b252f0c | 348 | enum gro_result { |
d1c76af9 HX |
349 | GRO_MERGED, |
350 | GRO_MERGED_FREE, | |
351 | GRO_HELD, | |
352 | GRO_NORMAL, | |
353 | GRO_DROP, | |
354 | }; | |
5b252f0c | 355 | typedef enum gro_result gro_result_t; |
d1c76af9 | 356 | |
8a4eb573 JP |
357 | /* |
358 | * enum rx_handler_result - Possible return values for rx_handlers. | |
359 | * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it | |
360 | * further. | |
361 | * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in | |
362 | * case skb->dev was changed by rx_handler. | |
363 | * @RX_HANDLER_EXACT: Force exact delivery, no wildcard. | |
5e82b4b2 | 364 | * @RX_HANDLER_PASS: Do nothing, pass the skb as if no rx_handler was called. |
8a4eb573 JP |
365 | * |
366 | * rx_handlers are functions called from inside __netif_receive_skb(), to do | |
367 | * special processing of the skb, prior to delivery to protocol handlers. | |
368 | * | |
369 | * Currently, a net_device can only have a single rx_handler registered. Trying | |
370 | * to register a second rx_handler will return -EBUSY. | |
371 | * | |
372 | * To register a rx_handler on a net_device, use netdev_rx_handler_register(). | |
373 | * To unregister a rx_handler on a net_device, use | |
374 | * netdev_rx_handler_unregister(). | |
375 | * | |
376 | * Upon return, rx_handler is expected to tell __netif_receive_skb() what to | |
377 | * do with the skb. | |
378 | * | |
5e82b4b2 | 379 | * If the rx_handler consumed the skb in some way, it should return |
8a4eb573 | 380 | * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for |
5e82b4b2 | 381 | * the skb to be delivered in some other way. |
8a4eb573 JP |
382 | * |
383 | * If the rx_handler changed skb->dev, to divert the skb to another | |
384 | * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the | |
385 | * new device will be called if it exists. | |
386 | * | |
5e82b4b2 | 387 | * If the rx_handler decides the skb should be ignored, it should return |
8a4eb573 | 388 | * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that |
d93cf068 | 389 | * are registered on exact device (ptype->dev == skb->dev). |
8a4eb573 | 390 | * |
5e82b4b2 | 391 | * If the rx_handler didn't change skb->dev, but wants the skb to be normally |
8a4eb573 JP |
392 | * delivered, it should return RX_HANDLER_PASS. |
393 | * | |
394 | * A device without a registered rx_handler will behave as if rx_handler | |
395 | * returned RX_HANDLER_PASS. | |
396 | */ | |
397 | ||
398 | enum rx_handler_result { | |
399 | RX_HANDLER_CONSUMED, | |
400 | RX_HANDLER_ANOTHER, | |
401 | RX_HANDLER_EXACT, | |
402 | RX_HANDLER_PASS, | |
403 | }; | |
404 | typedef enum rx_handler_result rx_handler_result_t; | |
405 | typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb); | |
ab95bfe0 | 406 | |
f629d208 | 407 | void __napi_schedule(struct napi_struct *n); |
bc9ad166 | 408 | void __napi_schedule_irqoff(struct napi_struct *n); |
bea3348e | 409 | |
4d29515f | 410 | static inline bool napi_disable_pending(struct napi_struct *n) |
a0a46196 DM |
411 | { |
412 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
413 | } | |
414 | ||
bea3348e | 415 | /** |
5e82b4b2 BH |
416 | * napi_schedule_prep - check if NAPI can be scheduled |
417 | * @n: NAPI context | |
bea3348e SH |
418 | * |
419 | * Test if NAPI routine is already running, and if not mark | |
5e82b4b2 | 420 | * it as running. This is used as a condition variable to |
a0a46196 DM |
421 | * insure only one NAPI poll instance runs. We also make |
422 | * sure there is no pending NAPI disable. | |
bea3348e | 423 | */ |
4d29515f | 424 | static inline bool napi_schedule_prep(struct napi_struct *n) |
bea3348e | 425 | { |
a0a46196 DM |
426 | return !napi_disable_pending(n) && |
427 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); | |
bea3348e SH |
428 | } |
429 | ||
430 | /** | |
431 | * napi_schedule - schedule NAPI poll | |
5e82b4b2 | 432 | * @n: NAPI context |
bea3348e SH |
433 | * |
434 | * Schedule NAPI poll routine to be called if it is not already | |
435 | * running. | |
436 | */ | |
437 | static inline void napi_schedule(struct napi_struct *n) | |
438 | { | |
439 | if (napi_schedule_prep(n)) | |
440 | __napi_schedule(n); | |
441 | } | |
442 | ||
bc9ad166 ED |
443 | /** |
444 | * napi_schedule_irqoff - schedule NAPI poll | |
5e82b4b2 | 445 | * @n: NAPI context |
bc9ad166 ED |
446 | * |
447 | * Variant of napi_schedule(), assuming hard irqs are masked. | |
448 | */ | |
449 | static inline void napi_schedule_irqoff(struct napi_struct *n) | |
450 | { | |
451 | if (napi_schedule_prep(n)) | |
452 | __napi_schedule_irqoff(n); | |
453 | } | |
454 | ||
bfe13f54 | 455 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
4d29515f | 456 | static inline bool napi_reschedule(struct napi_struct *napi) |
bfe13f54 RD |
457 | { |
458 | if (napi_schedule_prep(napi)) { | |
459 | __napi_schedule(napi); | |
4d29515f | 460 | return true; |
bfe13f54 | 461 | } |
4d29515f | 462 | return false; |
bfe13f54 RD |
463 | } |
464 | ||
364b6055 ED |
465 | bool __napi_complete(struct napi_struct *n); |
466 | bool napi_complete_done(struct napi_struct *n, int work_done); | |
bea3348e SH |
467 | /** |
468 | * napi_complete - NAPI processing complete | |
5e82b4b2 | 469 | * @n: NAPI context |
bea3348e SH |
470 | * |
471 | * Mark NAPI processing as complete. | |
3b47d303 | 472 | * Consider using napi_complete_done() instead. |
364b6055 | 473 | * Return false if device should avoid rearming interrupts. |
bea3348e | 474 | */ |
364b6055 | 475 | static inline bool napi_complete(struct napi_struct *n) |
3b47d303 ED |
476 | { |
477 | return napi_complete_done(n, 0); | |
478 | } | |
bea3348e | 479 | |
af12fa6e ET |
480 | /** |
481 | * napi_hash_del - remove a NAPI from global table | |
5e82b4b2 | 482 | * @napi: NAPI context |
af12fa6e | 483 | * |
5e82b4b2 | 484 | * Warning: caller must observe RCU grace period |
34cbe27e ED |
485 | * before freeing memory containing @napi, if |
486 | * this function returns true. | |
93d05d4a | 487 | * Note: core networking stack automatically calls it |
5e82b4b2 | 488 | * from netif_napi_del(). |
93d05d4a | 489 | * Drivers might want to call this helper to combine all |
5e82b4b2 | 490 | * the needed RCU grace periods into a single one. |
af12fa6e | 491 | */ |
34cbe27e | 492 | bool napi_hash_del(struct napi_struct *napi); |
af12fa6e | 493 | |
bea3348e SH |
494 | /** |
495 | * napi_disable - prevent NAPI from scheduling | |
5e82b4b2 | 496 | * @n: NAPI context |
bea3348e SH |
497 | * |
498 | * Stop NAPI from being scheduled on this context. | |
499 | * Waits till any outstanding processing completes. | |
500 | */ | |
3b47d303 | 501 | void napi_disable(struct napi_struct *n); |
bea3348e SH |
502 | |
503 | /** | |
504 | * napi_enable - enable NAPI scheduling | |
5e82b4b2 | 505 | * @n: NAPI context |
bea3348e SH |
506 | * |
507 | * Resume NAPI from being scheduled on this context. | |
508 | * Must be paired with napi_disable. | |
509 | */ | |
510 | static inline void napi_enable(struct napi_struct *n) | |
511 | { | |
512 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
4e857c58 | 513 | smp_mb__before_atomic(); |
bea3348e | 514 | clear_bit(NAPI_STATE_SCHED, &n->state); |
2d8bff12 | 515 | clear_bit(NAPI_STATE_NPSVC, &n->state); |
bea3348e SH |
516 | } |
517 | ||
c264c3de SH |
518 | /** |
519 | * napi_synchronize - wait until NAPI is not running | |
5e82b4b2 | 520 | * @n: NAPI context |
c264c3de SH |
521 | * |
522 | * Wait until NAPI is done being scheduled on this context. | |
523 | * Waits till any outstanding processing completes but | |
524 | * does not disable future activations. | |
525 | */ | |
526 | static inline void napi_synchronize(const struct napi_struct *n) | |
527 | { | |
facc432f AB |
528 | if (IS_ENABLED(CONFIG_SMP)) |
529 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
530 | msleep(1); | |
531 | else | |
532 | barrier(); | |
c264c3de | 533 | } |
c264c3de | 534 | |
d94d9fee | 535 | enum netdev_queue_state_t { |
73466498 TH |
536 | __QUEUE_STATE_DRV_XOFF, |
537 | __QUEUE_STATE_STACK_XOFF, | |
c3f26a26 | 538 | __QUEUE_STATE_FROZEN, |
79d16385 | 539 | }; |
8e2f1a63 DB |
540 | |
541 | #define QUEUE_STATE_DRV_XOFF (1 << __QUEUE_STATE_DRV_XOFF) | |
542 | #define QUEUE_STATE_STACK_XOFF (1 << __QUEUE_STATE_STACK_XOFF) | |
543 | #define QUEUE_STATE_FROZEN (1 << __QUEUE_STATE_FROZEN) | |
544 | ||
545 | #define QUEUE_STATE_ANY_XOFF (QUEUE_STATE_DRV_XOFF | QUEUE_STATE_STACK_XOFF) | |
546 | #define QUEUE_STATE_ANY_XOFF_OR_FROZEN (QUEUE_STATE_ANY_XOFF | \ | |
547 | QUEUE_STATE_FROZEN) | |
548 | #define QUEUE_STATE_DRV_XOFF_OR_FROZEN (QUEUE_STATE_DRV_XOFF | \ | |
549 | QUEUE_STATE_FROZEN) | |
550 | ||
73466498 TH |
551 | /* |
552 | * __QUEUE_STATE_DRV_XOFF is used by drivers to stop the transmit queue. The | |
553 | * netif_tx_* functions below are used to manipulate this flag. The | |
554 | * __QUEUE_STATE_STACK_XOFF flag is used by the stack to stop the transmit | |
555 | * queue independently. The netif_xmit_*stopped functions below are called | |
556 | * to check if the queue has been stopped by the driver or stack (either | |
557 | * of the XOFF bits are set in the state). Drivers should not need to call | |
558 | * netif_xmit*stopped functions, they should only be using netif_tx_*. | |
559 | */ | |
79d16385 | 560 | |
bb949fbd | 561 | struct netdev_queue { |
6a321cb3 | 562 | /* |
5e82b4b2 | 563 | * read-mostly part |
6a321cb3 | 564 | */ |
bb949fbd | 565 | struct net_device *dev; |
46e5da40 | 566 | struct Qdisc __rcu *qdisc; |
b0e1e646 | 567 | struct Qdisc *qdisc_sleeping; |
ccf5ff69 | 568 | #ifdef CONFIG_SYSFS |
1d24eb48 TH |
569 | struct kobject kobj; |
570 | #endif | |
f2cd2d3e ED |
571 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
572 | int numa_node; | |
573 | #endif | |
c0ef079c FW |
574 | unsigned long tx_maxrate; |
575 | /* | |
576 | * Number of TX timeouts for this queue | |
577 | * (/sys/class/net/DEV/Q/trans_timeout) | |
578 | */ | |
579 | unsigned long trans_timeout; | |
6a321cb3 | 580 | /* |
5e82b4b2 | 581 | * write-mostly part |
6a321cb3 ED |
582 | */ |
583 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
584 | int xmit_lock_owner; | |
9d21493b | 585 | /* |
9b36627a | 586 | * Time (in jiffies) of last Tx |
9d21493b ED |
587 | */ |
588 | unsigned long trans_start; | |
ccf5ff69 | 589 | |
114cf580 TH |
590 | unsigned long state; |
591 | ||
592 | #ifdef CONFIG_BQL | |
593 | struct dql dql; | |
594 | #endif | |
e8a0464c | 595 | } ____cacheline_aligned_in_smp; |
bb949fbd | 596 | |
f2cd2d3e ED |
597 | static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) |
598 | { | |
599 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
600 | return q->numa_node; | |
601 | #else | |
b236da69 | 602 | return NUMA_NO_NODE; |
f2cd2d3e ED |
603 | #endif |
604 | } | |
605 | ||
606 | static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node) | |
607 | { | |
608 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
609 | q->numa_node = node; | |
610 | #endif | |
611 | } | |
612 | ||
df334545 | 613 | #ifdef CONFIG_RPS |
0a9627f2 TH |
614 | /* |
615 | * This structure holds an RPS map which can be of variable length. The | |
616 | * map is an array of CPUs. | |
617 | */ | |
618 | struct rps_map { | |
619 | unsigned int len; | |
620 | struct rcu_head rcu; | |
621 | u16 cpus[0]; | |
622 | }; | |
60b778ce | 623 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + ((_num) * sizeof(u16))) |
0a9627f2 | 624 | |
fec5e652 | 625 | /* |
c445477d BH |
626 | * The rps_dev_flow structure contains the mapping of a flow to a CPU, the |
627 | * tail pointer for that CPU's input queue at the time of last enqueue, and | |
628 | * a hardware filter index. | |
fec5e652 TH |
629 | */ |
630 | struct rps_dev_flow { | |
631 | u16 cpu; | |
c445477d | 632 | u16 filter; |
fec5e652 TH |
633 | unsigned int last_qtail; |
634 | }; | |
c445477d | 635 | #define RPS_NO_FILTER 0xffff |
fec5e652 TH |
636 | |
637 | /* | |
638 | * The rps_dev_flow_table structure contains a table of flow mappings. | |
639 | */ | |
640 | struct rps_dev_flow_table { | |
641 | unsigned int mask; | |
642 | struct rcu_head rcu; | |
fec5e652 TH |
643 | struct rps_dev_flow flows[0]; |
644 | }; | |
645 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ | |
60b778ce | 646 | ((_num) * sizeof(struct rps_dev_flow))) |
fec5e652 TH |
647 | |
648 | /* | |
649 | * The rps_sock_flow_table contains mappings of flows to the last CPU | |
650 | * on which they were processed by the application (set in recvmsg). | |
5e82b4b2 BH |
651 | * Each entry is a 32bit value. Upper part is the high-order bits |
652 | * of flow hash, lower part is CPU number. | |
567e4b79 | 653 | * rps_cpu_mask is used to partition the space, depending on number of |
5e82b4b2 BH |
654 | * possible CPUs : rps_cpu_mask = roundup_pow_of_two(nr_cpu_ids) - 1 |
655 | * For example, if 64 CPUs are possible, rps_cpu_mask = 0x3f, | |
567e4b79 | 656 | * meaning we use 32-6=26 bits for the hash. |
fec5e652 TH |
657 | */ |
658 | struct rps_sock_flow_table { | |
567e4b79 | 659 | u32 mask; |
93c1af6c ED |
660 | |
661 | u32 ents[0] ____cacheline_aligned_in_smp; | |
fec5e652 | 662 | }; |
567e4b79 | 663 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (offsetof(struct rps_sock_flow_table, ents[_num])) |
fec5e652 TH |
664 | |
665 | #define RPS_NO_CPU 0xffff | |
666 | ||
567e4b79 ED |
667 | extern u32 rps_cpu_mask; |
668 | extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; | |
669 | ||
fec5e652 TH |
670 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, |
671 | u32 hash) | |
672 | { | |
673 | if (table && hash) { | |
567e4b79 ED |
674 | unsigned int index = hash & table->mask; |
675 | u32 val = hash & ~rps_cpu_mask; | |
fec5e652 | 676 | |
5e82b4b2 | 677 | /* We only give a hint, preemption can change CPU under us */ |
567e4b79 | 678 | val |= raw_smp_processor_id(); |
fec5e652 | 679 | |
567e4b79 ED |
680 | if (table->ents[index] != val) |
681 | table->ents[index] = val; | |
fec5e652 TH |
682 | } |
683 | } | |
684 | ||
c445477d | 685 | #ifdef CONFIG_RFS_ACCEL |
f629d208 JP |
686 | bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, u32 flow_id, |
687 | u16 filter_id); | |
c445477d | 688 | #endif |
a953be53 | 689 | #endif /* CONFIG_RPS */ |
c445477d | 690 | |
0a9627f2 TH |
691 | /* This structure contains an instance of an RX queue. */ |
692 | struct netdev_rx_queue { | |
a953be53 | 693 | #ifdef CONFIG_RPS |
6e3f7faf ED |
694 | struct rps_map __rcu *rps_map; |
695 | struct rps_dev_flow_table __rcu *rps_flow_table; | |
a953be53 | 696 | #endif |
6e3f7faf | 697 | struct kobject kobj; |
fe822240 | 698 | struct net_device *dev; |
0a9627f2 | 699 | } ____cacheline_aligned_in_smp; |
a953be53 MD |
700 | |
701 | /* | |
702 | * RX queue sysfs structures and functions. | |
703 | */ | |
704 | struct rx_queue_attribute { | |
705 | struct attribute attr; | |
706 | ssize_t (*show)(struct netdev_rx_queue *queue, | |
707 | struct rx_queue_attribute *attr, char *buf); | |
708 | ssize_t (*store)(struct netdev_rx_queue *queue, | |
709 | struct rx_queue_attribute *attr, const char *buf, size_t len); | |
710 | }; | |
d314774c | 711 | |
bf264145 TH |
712 | #ifdef CONFIG_XPS |
713 | /* | |
714 | * This structure holds an XPS map which can be of variable length. The | |
715 | * map is an array of queues. | |
716 | */ | |
717 | struct xps_map { | |
718 | unsigned int len; | |
719 | unsigned int alloc_len; | |
720 | struct rcu_head rcu; | |
721 | u16 queues[0]; | |
722 | }; | |
60b778ce | 723 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + ((_num) * sizeof(u16))) |
c59f419b HD |
724 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_ALIGN(offsetof(struct xps_map, queues[1])) \ |
725 | - sizeof(struct xps_map)) / sizeof(u16)) | |
bf264145 TH |
726 | |
727 | /* | |
728 | * This structure holds all XPS maps for device. Maps are indexed by CPU. | |
729 | */ | |
730 | struct xps_dev_maps { | |
731 | struct rcu_head rcu; | |
a4177869 | 732 | struct xps_map __rcu *cpu_map[0]; |
bf264145 | 733 | }; |
184c449f AD |
734 | #define XPS_DEV_MAPS_SIZE(_tcs) (sizeof(struct xps_dev_maps) + \ |
735 | (nr_cpu_ids * (_tcs) * sizeof(struct xps_map *))) | |
bf264145 TH |
736 | #endif /* CONFIG_XPS */ |
737 | ||
4f57c087 JF |
738 | #define TC_MAX_QUEUE 16 |
739 | #define TC_BITMASK 15 | |
740 | /* HW offloaded queuing disciplines txq count and offset maps */ | |
741 | struct netdev_tc_txq { | |
742 | u16 count; | |
743 | u16 offset; | |
744 | }; | |
745 | ||
68bad94e NP |
746 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
747 | /* | |
748 | * This structure is to hold information about the device | |
749 | * configured to run FCoE protocol stack. | |
750 | */ | |
751 | struct netdev_fcoe_hbainfo { | |
752 | char manufacturer[64]; | |
753 | char serial_number[64]; | |
754 | char hardware_version[64]; | |
755 | char driver_version[64]; | |
756 | char optionrom_version[64]; | |
757 | char firmware_version[64]; | |
758 | char model[256]; | |
759 | char model_description[256]; | |
760 | }; | |
761 | #endif | |
762 | ||
02637fce | 763 | #define MAX_PHYS_ITEM_ID_LEN 32 |
66b52b0d | 764 | |
02637fce JP |
765 | /* This structure holds a unique identifier to identify some |
766 | * physical item (port for example) used by a netdevice. | |
66b52b0d | 767 | */ |
02637fce JP |
768 | struct netdev_phys_item_id { |
769 | unsigned char id[MAX_PHYS_ITEM_ID_LEN]; | |
66b52b0d JP |
770 | unsigned char id_len; |
771 | }; | |
772 | ||
d754f98b SF |
773 | static inline bool netdev_phys_item_id_same(struct netdev_phys_item_id *a, |
774 | struct netdev_phys_item_id *b) | |
775 | { | |
776 | return a->id_len == b->id_len && | |
777 | memcmp(a->id, b->id, a->id_len) == 0; | |
778 | } | |
779 | ||
99932d4f DB |
780 | typedef u16 (*select_queue_fallback_t)(struct net_device *dev, |
781 | struct sk_buff *skb); | |
782 | ||
a1b7c5fd | 783 | /* These structures hold the attributes of qdisc and classifiers |
16e5cc64 JF |
784 | * that are being passed to the netdevice through the setup_tc op. |
785 | */ | |
786 | enum { | |
787 | TC_SETUP_MQPRIO, | |
a1b7c5fd | 788 | TC_SETUP_CLSU32, |
5b33f488 | 789 | TC_SETUP_CLSFLOWER, |
b87f7936 | 790 | TC_SETUP_MATCHALL, |
332ae8e2 | 791 | TC_SETUP_CLSBPF, |
16e5cc64 JF |
792 | }; |
793 | ||
a1b7c5fd JF |
794 | struct tc_cls_u32_offload; |
795 | ||
16e5cc64 JF |
796 | struct tc_to_netdev { |
797 | unsigned int type; | |
798 | union { | |
799 | u8 tc; | |
a1b7c5fd | 800 | struct tc_cls_u32_offload *cls_u32; |
5b33f488 | 801 | struct tc_cls_flower_offload *cls_flower; |
b87f7936 | 802 | struct tc_cls_matchall_offload *cls_mall; |
332ae8e2 | 803 | struct tc_cls_bpf_offload *cls_bpf; |
16e5cc64 JF |
804 | }; |
805 | }; | |
806 | ||
a7862b45 BB |
807 | /* These structures hold the attributes of xdp state that are being passed |
808 | * to the netdevice through the xdp op. | |
809 | */ | |
810 | enum xdp_netdev_command { | |
811 | /* Set or clear a bpf program used in the earliest stages of packet | |
812 | * rx. The prog will have been loaded as BPF_PROG_TYPE_XDP. The callee | |
813 | * is responsible for calling bpf_prog_put on any old progs that are | |
814 | * stored. In case of error, the callee need not release the new prog | |
815 | * reference, but on success it takes ownership and must bpf_prog_put | |
816 | * when it is no longer used. | |
817 | */ | |
818 | XDP_SETUP_PROG, | |
819 | /* Check if a bpf program is set on the device. The callee should | |
820 | * return true if a program is currently attached and running. | |
821 | */ | |
822 | XDP_QUERY_PROG, | |
823 | }; | |
824 | ||
825 | struct netdev_xdp { | |
826 | enum xdp_netdev_command command; | |
827 | union { | |
828 | /* XDP_SETUP_PROG */ | |
829 | struct bpf_prog *prog; | |
830 | /* XDP_QUERY_PROG */ | |
831 | bool prog_attached; | |
832 | }; | |
833 | }; | |
16e5cc64 | 834 | |
d314774c SH |
835 | /* |
836 | * This structure defines the management hooks for network devices. | |
00829823 SH |
837 | * The following hooks can be defined; unless noted otherwise, they are |
838 | * optional and can be filled with a null pointer. | |
d314774c SH |
839 | * |
840 | * int (*ndo_init)(struct net_device *dev); | |
5e82b4b2 BH |
841 | * This function is called once when a network device is registered. |
842 | * The network device can use this for any late stage initialization | |
843 | * or semantic validation. It can fail with an error code which will | |
844 | * be propagated back to register_netdev. | |
d314774c SH |
845 | * |
846 | * void (*ndo_uninit)(struct net_device *dev); | |
847 | * This function is called when device is unregistered or when registration | |
848 | * fails. It is not called if init fails. | |
849 | * | |
850 | * int (*ndo_open)(struct net_device *dev); | |
5e82b4b2 | 851 | * This function is called when a network device transitions to the up |
d314774c SH |
852 | * state. |
853 | * | |
854 | * int (*ndo_stop)(struct net_device *dev); | |
5e82b4b2 | 855 | * This function is called when a network device transitions to the down |
d314774c SH |
856 | * state. |
857 | * | |
dc1f8bf6 SH |
858 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
859 | * struct net_device *dev); | |
00829823 | 860 | * Called when a packet needs to be transmitted. |
e79d8429 RR |
861 | * Returns NETDEV_TX_OK. Can return NETDEV_TX_BUSY, but you should stop |
862 | * the queue before that can happen; it's for obsolete devices and weird | |
863 | * corner cases, but the stack really does a non-trivial amount | |
864 | * of useless work if you return NETDEV_TX_BUSY. | |
5e82b4b2 | 865 | * Required; cannot be NULL. |
00829823 | 866 | * |
cdba756f ED |
867 | * netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
868 | * netdev_features_t features); | |
869 | * Adjusts the requested feature flags according to device-specific | |
870 | * constraints, and returns the resulting flags. Must not modify | |
871 | * the device state. | |
872 | * | |
f663dd9a | 873 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb, |
99932d4f | 874 | * void *accel_priv, select_queue_fallback_t fallback); |
5e82b4b2 | 875 | * Called to decide which queue to use when device supports multiple |
00829823 SH |
876 | * transmit queues. |
877 | * | |
d314774c SH |
878 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
879 | * This function is called to allow device receiver to make | |
5e82b4b2 | 880 | * changes to configuration when multicast or promiscuous is enabled. |
d314774c SH |
881 | * |
882 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
883 | * This function is called device changes address list filtering. | |
01789349 | 884 | * If driver handles unicast address filtering, it should set |
5e82b4b2 | 885 | * IFF_UNICAST_FLT in its priv_flags. |
d314774c SH |
886 | * |
887 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
888 | * This function is called when the Media Access Control address | |
37b607c5 | 889 | * needs to be changed. If this interface is not defined, the |
5e82b4b2 | 890 | * MAC address can not be changed. |
d314774c SH |
891 | * |
892 | * int (*ndo_validate_addr)(struct net_device *dev); | |
893 | * Test if Media Access Control address is valid for the device. | |
894 | * | |
895 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
5e82b4b2 BH |
896 | * Called when a user requests an ioctl which can't be handled by |
897 | * the generic interface code. If not defined ioctls return | |
d314774c SH |
898 | * not supported error code. |
899 | * | |
900 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); | |
901 | * Used to set network devices bus interface parameters. This interface | |
5e82b4b2 | 902 | * is retained for legacy reasons; new devices should use the bus |
d314774c SH |
903 | * interface (PCI) for low level management. |
904 | * | |
905 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
906 | * Called when a user wants to change the Maximum Transfer Unit | |
907 | * of a device. If not defined, any request to change MTU will | |
908 | * will return an error. | |
909 | * | |
00829823 | 910 | * void (*ndo_tx_timeout)(struct net_device *dev); |
5e82b4b2 | 911 | * Callback used when the transmitter has not made any progress |
d314774c SH |
912 | * for dev->watchdog ticks. |
913 | * | |
3cfde79c | 914 | * struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
28172739 | 915 | * struct rtnl_link_stats64 *storage); |
d308e38f | 916 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
d314774c | 917 | * Called when a user wants to get the network device usage |
be1f3c2c | 918 | * statistics. Drivers must do one of the following: |
3cfde79c BH |
919 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
920 | * rtnl_link_stats64 structure passed by the caller. | |
82695d9b | 921 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
be1f3c2c BH |
922 | * (which should normally be dev->stats) and return a pointer to |
923 | * it. The structure may be changed asynchronously only if each | |
924 | * field is written atomically. | |
925 | * 3. Update dev->stats asynchronously and atomically, and define | |
926 | * neither operation. | |
d314774c | 927 | * |
3df5b3c6 | 928 | * bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id) |
2c9d85d4 NF |
929 | * Return true if this device supports offload stats of this attr_id. |
930 | * | |
931 | * int (*ndo_get_offload_stats)(int attr_id, const struct net_device *dev, | |
932 | * void *attr_data) | |
933 | * Get statistics for offload operations by attr_id. Write it into the | |
934 | * attr_data pointer. | |
935 | * | |
5d632cb7 | 936 | * int (*ndo_vlan_rx_add_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 937 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 938 | * VLAN id is registered. |
d314774c | 939 | * |
5d632cb7 | 940 | * int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 941 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 942 | * VLAN id is unregistered. |
d314774c SH |
943 | * |
944 | * void (*ndo_poll_controller)(struct net_device *dev); | |
95c26df8 WM |
945 | * |
946 | * SR-IOV management functions. | |
947 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); | |
79aab093 MS |
948 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, |
949 | * u8 qos, __be16 proto); | |
ed616689 SC |
950 | * int (*ndo_set_vf_rate)(struct net_device *dev, int vf, int min_tx_rate, |
951 | * int max_tx_rate); | |
5f8444a3 | 952 | * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting); |
dd461d6a | 953 | * int (*ndo_set_vf_trust)(struct net_device *dev, int vf, bool setting); |
95c26df8 WM |
954 | * int (*ndo_get_vf_config)(struct net_device *dev, |
955 | * int vf, struct ifla_vf_info *ivf); | |
1d8faf48 | 956 | * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state); |
57b61080 SF |
957 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
958 | * struct nlattr *port[]); | |
01a3d796 VZ |
959 | * |
960 | * Enable or disable the VF ability to query its RSS Redirection Table and | |
961 | * Hash Key. This is needed since on some devices VF share this information | |
5e82b4b2 | 962 | * with PF and querying it may introduce a theoretical security risk. |
01a3d796 | 963 | * int (*ndo_set_vf_rss_query_en)(struct net_device *dev, int vf, bool setting); |
57b61080 | 964 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); |
4f57c087 JF |
965 | * int (*ndo_setup_tc)(struct net_device *dev, u8 tc) |
966 | * Called to setup 'tc' number of traffic classes in the net device. This | |
967 | * is always called from the stack with the rtnl lock held and netif tx | |
968 | * queues stopped. This allows the netdevice to perform queue management | |
969 | * safely. | |
c445477d | 970 | * |
e9bce845 YZ |
971 | * Fiber Channel over Ethernet (FCoE) offload functions. |
972 | * int (*ndo_fcoe_enable)(struct net_device *dev); | |
973 | * Called when the FCoE protocol stack wants to start using LLD for FCoE | |
974 | * so the underlying device can perform whatever needed configuration or | |
975 | * initialization to support acceleration of FCoE traffic. | |
976 | * | |
977 | * int (*ndo_fcoe_disable)(struct net_device *dev); | |
978 | * Called when the FCoE protocol stack wants to stop using LLD for FCoE | |
979 | * so the underlying device can perform whatever needed clean-ups to | |
980 | * stop supporting acceleration of FCoE traffic. | |
981 | * | |
982 | * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid, | |
983 | * struct scatterlist *sgl, unsigned int sgc); | |
984 | * Called when the FCoE Initiator wants to initialize an I/O that | |
985 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
986 | * perform necessary setup and returns 1 to indicate the device is set up | |
987 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
988 | * | |
989 | * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); | |
990 | * Called when the FCoE Initiator/Target is done with the DDPed I/O as | |
991 | * indicated by the FC exchange id 'xid', so the underlying device can | |
992 | * clean up and reuse resources for later DDP requests. | |
993 | * | |
994 | * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid, | |
995 | * struct scatterlist *sgl, unsigned int sgc); | |
996 | * Called when the FCoE Target wants to initialize an I/O that | |
997 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
998 | * perform necessary setup and returns 1 to indicate the device is set up | |
999 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
1000 | * | |
68bad94e NP |
1001 | * int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1002 | * struct netdev_fcoe_hbainfo *hbainfo); | |
1003 | * Called when the FCoE Protocol stack wants information on the underlying | |
1004 | * device. This information is utilized by the FCoE protocol stack to | |
1005 | * register attributes with Fiber Channel management service as per the | |
1006 | * FC-GS Fabric Device Management Information(FDMI) specification. | |
1007 | * | |
e9bce845 YZ |
1008 | * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); |
1009 | * Called when the underlying device wants to override default World Wide | |
1010 | * Name (WWN) generation mechanism in FCoE protocol stack to pass its own | |
1011 | * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE | |
1012 | * protocol stack to use. | |
1013 | * | |
c445477d BH |
1014 | * RFS acceleration. |
1015 | * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, | |
1016 | * u16 rxq_index, u32 flow_id); | |
1017 | * Set hardware filter for RFS. rxq_index is the target queue index; | |
1018 | * flow_id is a flow ID to be passed to rps_may_expire_flow() later. | |
1019 | * Return the filter ID on success, or a negative error code. | |
fbaec0ea | 1020 | * |
8b98a70c | 1021 | * Slave management functions (for bridge, bonding, etc). |
fbaec0ea JP |
1022 | * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); |
1023 | * Called to make another netdev an underling. | |
1024 | * | |
1025 | * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); | |
1026 | * Called to release previously enslaved netdev. | |
5455c699 MM |
1027 | * |
1028 | * Feature/offload setting functions. | |
c8f44aff | 1029 | * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); |
5455c699 MM |
1030 | * Called to update device configuration to new features. Passed |
1031 | * feature set might be less than what was returned by ndo_fix_features()). | |
1032 | * Must return >0 or -errno if it changed dev->features itself. | |
1033 | * | |
edc7d573 | 1034 | * int (*ndo_fdb_add)(struct ndmsg *ndm, struct nlattr *tb[], |
1035 | * struct net_device *dev, | |
f6f6424b | 1036 | * const unsigned char *addr, u16 vid, u16 flags) |
77162022 | 1037 | * Adds an FDB entry to dev for addr. |
1690be63 VY |
1038 | * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[], |
1039 | * struct net_device *dev, | |
f6f6424b | 1040 | * const unsigned char *addr, u16 vid) |
77162022 JF |
1041 | * Deletes the FDB entry from dev coresponding to addr. |
1042 | * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb, | |
5d5eacb3 | 1043 | * struct net_device *dev, struct net_device *filter_dev, |
d297653d | 1044 | * int *idx) |
77162022 JF |
1045 | * Used to add FDB entries to dump requests. Implementers should add |
1046 | * entries to skb and update idx with the number of entries. | |
e5a55a89 | 1047 | * |
ad41faa8 ND |
1048 | * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh, |
1049 | * u16 flags) | |
e5a55a89 | 1050 | * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, |
46c264da ND |
1051 | * struct net_device *dev, u32 filter_mask, |
1052 | * int nlflags) | |
ad41faa8 ND |
1053 | * int (*ndo_bridge_dellink)(struct net_device *dev, struct nlmsghdr *nlh, |
1054 | * u16 flags); | |
4bf84c35 JP |
1055 | * |
1056 | * int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier); | |
1057 | * Called to change device carrier. Soft-devices (like dummy, team, etc) | |
1058 | * which do not represent real hardware may define this to allow their | |
1059 | * userspace components to manage their virtual carrier state. Devices | |
1060 | * that determine carrier state from physical hardware properties (eg | |
1061 | * network cables) or protocol-dependent mechanisms (eg | |
1062 | * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function. | |
66b52b0d JP |
1063 | * |
1064 | * int (*ndo_get_phys_port_id)(struct net_device *dev, | |
02637fce | 1065 | * struct netdev_phys_item_id *ppid); |
66b52b0d JP |
1066 | * Called to get ID of physical port of this device. If driver does |
1067 | * not implement this, it is assumed that the hw is not able to have | |
1068 | * multiple net devices on single physical port. | |
53cf5275 | 1069 | * |
7c46a640 AD |
1070 | * void (*ndo_udp_tunnel_add)(struct net_device *dev, |
1071 | * struct udp_tunnel_info *ti); | |
1072 | * Called by UDP tunnel to notify a driver about the UDP port and socket | |
1073 | * address family that a UDP tunnel is listnening to. It is called only | |
1074 | * when a new port starts listening. The operation is protected by the | |
1075 | * RTNL. | |
1076 | * | |
1077 | * void (*ndo_udp_tunnel_del)(struct net_device *dev, | |
1078 | * struct udp_tunnel_info *ti); | |
1079 | * Called by UDP tunnel to notify the driver about a UDP port and socket | |
1080 | * address family that the UDP tunnel is not listening to anymore. The | |
1081 | * operation is protected by the RTNL. | |
1082 | * | |
a6cc0cfa JF |
1083 | * void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1084 | * struct net_device *dev) | |
1085 | * Called by upper layer devices to accelerate switching or other | |
1086 | * station functionality into hardware. 'pdev is the lowerdev | |
1087 | * to use for the offload and 'dev' is the net device that will | |
1088 | * back the offload. Returns a pointer to the private structure | |
1089 | * the upper layer will maintain. | |
1090 | * void (*ndo_dfwd_del_station)(struct net_device *pdev, void *priv) | |
1091 | * Called by upper layer device to delete the station created | |
1092 | * by 'ndo_dfwd_add_station'. 'pdev' is the net device backing | |
1093 | * the station and priv is the structure returned by the add | |
1094 | * operation. | |
1095 | * netdev_tx_t (*ndo_dfwd_start_xmit)(struct sk_buff *skb, | |
1096 | * struct net_device *dev, | |
1097 | * void *priv); | |
1098 | * Callback to use for xmit over the accelerated station. This | |
1099 | * is used in place of ndo_start_xmit on accelerated net | |
1100 | * devices. | |
5e82b4b2 BH |
1101 | * netdev_features_t (*ndo_features_check)(struct sk_buff *skb, |
1102 | * struct net_device *dev | |
1103 | * netdev_features_t features); | |
04ffcb25 | 1104 | * Called by core transmit path to determine if device is capable of |
5f35227e JG |
1105 | * performing offload operations on a given packet. This is to give |
1106 | * the device an opportunity to implement any restrictions that cannot | |
1107 | * be otherwise expressed by feature flags. The check is called with | |
1108 | * the set of features that the stack has calculated and it returns | |
1109 | * those the driver believes to be appropriate. | |
822b3b2e JF |
1110 | * int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1111 | * int queue_index, u32 maxrate); | |
1112 | * Called when a user wants to set a max-rate limitation of specific | |
1113 | * TX queue. | |
a54acb3a ND |
1114 | * int (*ndo_get_iflink)(const struct net_device *dev); |
1115 | * Called to get the iflink value of this device. | |
d746d707 | 1116 | * void (*ndo_change_proto_down)(struct net_device *dev, |
5e82b4b2 | 1117 | * bool proto_down); |
d746d707 AK |
1118 | * This function is used to pass protocol port error state information |
1119 | * to the switch driver. The switch driver can react to the proto_down | |
1120 | * by doing a phys down on the associated switch port. | |
fc4099f1 PS |
1121 | * int (*ndo_fill_metadata_dst)(struct net_device *dev, struct sk_buff *skb); |
1122 | * This function is used to get egress tunnel information for given skb. | |
1123 | * This is useful for retrieving outer tunnel header parameters while | |
1124 | * sampling packet. | |
871b642a PA |
1125 | * void (*ndo_set_rx_headroom)(struct net_device *dev, int needed_headroom); |
1126 | * This function is used to specify the headroom that the skb must | |
1127 | * consider when allocation skb during packet reception. Setting | |
1128 | * appropriate rx headroom value allows avoiding skb head copy on | |
5e82b4b2 | 1129 | * forward. Setting a negative value resets the rx headroom to the |
871b642a | 1130 | * default value. |
a7862b45 BB |
1131 | * int (*ndo_xdp)(struct net_device *dev, struct netdev_xdp *xdp); |
1132 | * This function is used to set or query state related to XDP on the | |
1133 | * netdevice. See definition of enum xdp_netdev_command for details. | |
d746d707 | 1134 | * |
d314774c SH |
1135 | */ |
1136 | struct net_device_ops { | |
1137 | int (*ndo_init)(struct net_device *dev); | |
1138 | void (*ndo_uninit)(struct net_device *dev); | |
1139 | int (*ndo_open)(struct net_device *dev); | |
1140 | int (*ndo_stop)(struct net_device *dev); | |
cdba756f ED |
1141 | netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
1142 | struct net_device *dev); | |
1143 | netdev_features_t (*ndo_features_check)(struct sk_buff *skb, | |
1144 | struct net_device *dev, | |
1145 | netdev_features_t features); | |
00829823 | 1146 | u16 (*ndo_select_queue)(struct net_device *dev, |
f663dd9a | 1147 | struct sk_buff *skb, |
99932d4f DB |
1148 | void *accel_priv, |
1149 | select_queue_fallback_t fallback); | |
d314774c SH |
1150 | void (*ndo_change_rx_flags)(struct net_device *dev, |
1151 | int flags); | |
d314774c | 1152 | void (*ndo_set_rx_mode)(struct net_device *dev); |
d314774c SH |
1153 | int (*ndo_set_mac_address)(struct net_device *dev, |
1154 | void *addr); | |
d314774c | 1155 | int (*ndo_validate_addr)(struct net_device *dev); |
d314774c SH |
1156 | int (*ndo_do_ioctl)(struct net_device *dev, |
1157 | struct ifreq *ifr, int cmd); | |
d314774c SH |
1158 | int (*ndo_set_config)(struct net_device *dev, |
1159 | struct ifmap *map); | |
00829823 SH |
1160 | int (*ndo_change_mtu)(struct net_device *dev, |
1161 | int new_mtu); | |
1162 | int (*ndo_neigh_setup)(struct net_device *dev, | |
1163 | struct neigh_parms *); | |
d314774c SH |
1164 | void (*ndo_tx_timeout) (struct net_device *dev); |
1165 | ||
28172739 ED |
1166 | struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
1167 | struct rtnl_link_stats64 *storage); | |
3df5b3c6 | 1168 | bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id); |
2c9d85d4 NF |
1169 | int (*ndo_get_offload_stats)(int attr_id, |
1170 | const struct net_device *dev, | |
1171 | void *attr_data); | |
d314774c SH |
1172 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
1173 | ||
8e586137 | 1174 | int (*ndo_vlan_rx_add_vid)(struct net_device *dev, |
80d5c368 | 1175 | __be16 proto, u16 vid); |
8e586137 | 1176 | int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, |
80d5c368 | 1177 | __be16 proto, u16 vid); |
d314774c | 1178 | #ifdef CONFIG_NET_POLL_CONTROLLER |
d314774c | 1179 | void (*ndo_poll_controller)(struct net_device *dev); |
4247e161 | 1180 | int (*ndo_netpoll_setup)(struct net_device *dev, |
a8779ec1 | 1181 | struct netpoll_info *info); |
0e34e931 | 1182 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
06021292 | 1183 | #endif |
e0d1095a | 1184 | #ifdef CONFIG_NET_RX_BUSY_POLL |
8b80cda5 | 1185 | int (*ndo_busy_poll)(struct napi_struct *dev); |
d314774c | 1186 | #endif |
95c26df8 WM |
1187 | int (*ndo_set_vf_mac)(struct net_device *dev, |
1188 | int queue, u8 *mac); | |
1189 | int (*ndo_set_vf_vlan)(struct net_device *dev, | |
79aab093 MS |
1190 | int queue, u16 vlan, |
1191 | u8 qos, __be16 proto); | |
ed616689 SC |
1192 | int (*ndo_set_vf_rate)(struct net_device *dev, |
1193 | int vf, int min_tx_rate, | |
1194 | int max_tx_rate); | |
5f8444a3 GR |
1195 | int (*ndo_set_vf_spoofchk)(struct net_device *dev, |
1196 | int vf, bool setting); | |
dd461d6a HS |
1197 | int (*ndo_set_vf_trust)(struct net_device *dev, |
1198 | int vf, bool setting); | |
95c26df8 WM |
1199 | int (*ndo_get_vf_config)(struct net_device *dev, |
1200 | int vf, | |
1201 | struct ifla_vf_info *ivf); | |
1d8faf48 RE |
1202 | int (*ndo_set_vf_link_state)(struct net_device *dev, |
1203 | int vf, int link_state); | |
3b766cd8 EBE |
1204 | int (*ndo_get_vf_stats)(struct net_device *dev, |
1205 | int vf, | |
1206 | struct ifla_vf_stats | |
1207 | *vf_stats); | |
57b61080 SF |
1208 | int (*ndo_set_vf_port)(struct net_device *dev, |
1209 | int vf, | |
1210 | struct nlattr *port[]); | |
1211 | int (*ndo_get_vf_port)(struct net_device *dev, | |
1212 | int vf, struct sk_buff *skb); | |
cc8e27cc EC |
1213 | int (*ndo_set_vf_guid)(struct net_device *dev, |
1214 | int vf, u64 guid, | |
1215 | int guid_type); | |
01a3d796 VZ |
1216 | int (*ndo_set_vf_rss_query_en)( |
1217 | struct net_device *dev, | |
1218 | int vf, bool setting); | |
16e5cc64 JF |
1219 | int (*ndo_setup_tc)(struct net_device *dev, |
1220 | u32 handle, | |
1221 | __be16 protocol, | |
1222 | struct tc_to_netdev *tc); | |
d11ead75 | 1223 | #if IS_ENABLED(CONFIG_FCOE) |
cb454399 YZ |
1224 | int (*ndo_fcoe_enable)(struct net_device *dev); |
1225 | int (*ndo_fcoe_disable)(struct net_device *dev); | |
4d288d57 YZ |
1226 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
1227 | u16 xid, | |
1228 | struct scatterlist *sgl, | |
1229 | unsigned int sgc); | |
1230 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
1231 | u16 xid); | |
6247e086 YZ |
1232 | int (*ndo_fcoe_ddp_target)(struct net_device *dev, |
1233 | u16 xid, | |
1234 | struct scatterlist *sgl, | |
1235 | unsigned int sgc); | |
68bad94e NP |
1236 | int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1237 | struct netdev_fcoe_hbainfo *hbainfo); | |
3c9c36bc BPG |
1238 | #endif |
1239 | ||
d11ead75 | 1240 | #if IS_ENABLED(CONFIG_LIBFCOE) |
df5c7945 YZ |
1241 | #define NETDEV_FCOE_WWNN 0 |
1242 | #define NETDEV_FCOE_WWPN 1 | |
1243 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, | |
1244 | u64 *wwn, int type); | |
4d288d57 | 1245 | #endif |
3c9c36bc | 1246 | |
c445477d BH |
1247 | #ifdef CONFIG_RFS_ACCEL |
1248 | int (*ndo_rx_flow_steer)(struct net_device *dev, | |
1249 | const struct sk_buff *skb, | |
1250 | u16 rxq_index, | |
1251 | u32 flow_id); | |
1252 | #endif | |
fbaec0ea JP |
1253 | int (*ndo_add_slave)(struct net_device *dev, |
1254 | struct net_device *slave_dev); | |
1255 | int (*ndo_del_slave)(struct net_device *dev, | |
1256 | struct net_device *slave_dev); | |
c8f44aff MM |
1257 | netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1258 | netdev_features_t features); | |
5455c699 | 1259 | int (*ndo_set_features)(struct net_device *dev, |
c8f44aff | 1260 | netdev_features_t features); |
503eebc2 JP |
1261 | int (*ndo_neigh_construct)(struct net_device *dev, |
1262 | struct neighbour *n); | |
1263 | void (*ndo_neigh_destroy)(struct net_device *dev, | |
1264 | struct neighbour *n); | |
77162022 JF |
1265 | |
1266 | int (*ndo_fdb_add)(struct ndmsg *ndm, | |
edc7d573 | 1267 | struct nlattr *tb[], |
77162022 | 1268 | struct net_device *dev, |
6b6e2725 | 1269 | const unsigned char *addr, |
f6f6424b | 1270 | u16 vid, |
77162022 JF |
1271 | u16 flags); |
1272 | int (*ndo_fdb_del)(struct ndmsg *ndm, | |
1690be63 | 1273 | struct nlattr *tb[], |
77162022 | 1274 | struct net_device *dev, |
f6f6424b JP |
1275 | const unsigned char *addr, |
1276 | u16 vid); | |
77162022 JF |
1277 | int (*ndo_fdb_dump)(struct sk_buff *skb, |
1278 | struct netlink_callback *cb, | |
1279 | struct net_device *dev, | |
5d5eacb3 | 1280 | struct net_device *filter_dev, |
d297653d | 1281 | int *idx); |
e5a55a89 JF |
1282 | |
1283 | int (*ndo_bridge_setlink)(struct net_device *dev, | |
add511b3 RP |
1284 | struct nlmsghdr *nlh, |
1285 | u16 flags); | |
e5a55a89 JF |
1286 | int (*ndo_bridge_getlink)(struct sk_buff *skb, |
1287 | u32 pid, u32 seq, | |
6cbdceeb | 1288 | struct net_device *dev, |
46c264da ND |
1289 | u32 filter_mask, |
1290 | int nlflags); | |
407af329 | 1291 | int (*ndo_bridge_dellink)(struct net_device *dev, |
add511b3 RP |
1292 | struct nlmsghdr *nlh, |
1293 | u16 flags); | |
4bf84c35 JP |
1294 | int (*ndo_change_carrier)(struct net_device *dev, |
1295 | bool new_carrier); | |
66b52b0d | 1296 | int (*ndo_get_phys_port_id)(struct net_device *dev, |
02637fce | 1297 | struct netdev_phys_item_id *ppid); |
db24a904 DA |
1298 | int (*ndo_get_phys_port_name)(struct net_device *dev, |
1299 | char *name, size_t len); | |
7c46a640 AD |
1300 | void (*ndo_udp_tunnel_add)(struct net_device *dev, |
1301 | struct udp_tunnel_info *ti); | |
1302 | void (*ndo_udp_tunnel_del)(struct net_device *dev, | |
1303 | struct udp_tunnel_info *ti); | |
a6cc0cfa JF |
1304 | void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1305 | struct net_device *dev); | |
1306 | void (*ndo_dfwd_del_station)(struct net_device *pdev, | |
1307 | void *priv); | |
1308 | ||
1309 | netdev_tx_t (*ndo_dfwd_start_xmit) (struct sk_buff *skb, | |
1310 | struct net_device *dev, | |
1311 | void *priv); | |
25175ba5 | 1312 | int (*ndo_get_lock_subclass)(struct net_device *dev); |
822b3b2e JF |
1313 | int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1314 | int queue_index, | |
1315 | u32 maxrate); | |
a54acb3a | 1316 | int (*ndo_get_iflink)(const struct net_device *dev); |
d746d707 AK |
1317 | int (*ndo_change_proto_down)(struct net_device *dev, |
1318 | bool proto_down); | |
fc4099f1 PS |
1319 | int (*ndo_fill_metadata_dst)(struct net_device *dev, |
1320 | struct sk_buff *skb); | |
871b642a PA |
1321 | void (*ndo_set_rx_headroom)(struct net_device *dev, |
1322 | int needed_headroom); | |
a7862b45 BB |
1323 | int (*ndo_xdp)(struct net_device *dev, |
1324 | struct netdev_xdp *xdp); | |
d314774c SH |
1325 | }; |
1326 | ||
7aa98047 LR |
1327 | /** |
1328 | * enum net_device_priv_flags - &struct net_device priv_flags | |
1329 | * | |
1330 | * These are the &struct net_device, they are only set internally | |
1331 | * by drivers and used in the kernel. These flags are invisible to | |
5e82b4b2 | 1332 | * userspace; this means that the order of these flags can change |
7aa98047 LR |
1333 | * during any kernel release. |
1334 | * | |
1335 | * You should have a pretty good reason to be extending these flags. | |
1336 | * | |
1337 | * @IFF_802_1Q_VLAN: 802.1Q VLAN device | |
1338 | * @IFF_EBRIDGE: Ethernet bridging device | |
7aa98047 | 1339 | * @IFF_BONDING: bonding master or slave |
7aa98047 | 1340 | * @IFF_ISATAP: ISATAP interface (RFC4214) |
7aa98047 LR |
1341 | * @IFF_WAN_HDLC: WAN HDLC device |
1342 | * @IFF_XMIT_DST_RELEASE: dev_hard_start_xmit() is allowed to | |
1343 | * release skb->dst | |
1344 | * @IFF_DONT_BRIDGE: disallow bridging this ether dev | |
1345 | * @IFF_DISABLE_NETPOLL: disable netpoll at run-time | |
1346 | * @IFF_MACVLAN_PORT: device used as macvlan port | |
1347 | * @IFF_BRIDGE_PORT: device used as bridge port | |
1348 | * @IFF_OVS_DATAPATH: device used as Open vSwitch datapath port | |
1349 | * @IFF_TX_SKB_SHARING: The interface supports sharing skbs on transmit | |
1350 | * @IFF_UNICAST_FLT: Supports unicast filtering | |
1351 | * @IFF_TEAM_PORT: device used as team port | |
1352 | * @IFF_SUPP_NOFCS: device supports sending custom FCS | |
1353 | * @IFF_LIVE_ADDR_CHANGE: device supports hardware address | |
1354 | * change when it's running | |
1355 | * @IFF_MACVLAN: Macvlan device | |
6d0e24cd LB |
1356 | * @IFF_XMIT_DST_RELEASE_PERM: IFF_XMIT_DST_RELEASE not taking into account |
1357 | * underlying stacked devices | |
1358 | * @IFF_IPVLAN_MASTER: IPvlan master device | |
1359 | * @IFF_IPVLAN_SLAVE: IPvlan slave device | |
007979ea | 1360 | * @IFF_L3MDEV_MASTER: device is an L3 master device |
fa8187c9 | 1361 | * @IFF_NO_QUEUE: device can run without qdisc attached |
35d4e172 | 1362 | * @IFF_OPENVSWITCH: device is a Open vSwitch master |
fee6d4c7 | 1363 | * @IFF_L3MDEV_SLAVE: device is enslaved to an L3 master device |
c981e421 | 1364 | * @IFF_TEAM: device is a team device |
d4ab4286 | 1365 | * @IFF_RXFH_CONFIGURED: device has had Rx Flow indirection table configured |
871b642a PA |
1366 | * @IFF_PHONY_HEADROOM: the headroom value is controlled by an external |
1367 | * entity (i.e. the master device for bridged veth) | |
3c175784 | 1368 | * @IFF_MACSEC: device is a MACsec device |
7aa98047 LR |
1369 | */ |
1370 | enum netdev_priv_flags { | |
1371 | IFF_802_1Q_VLAN = 1<<0, | |
1372 | IFF_EBRIDGE = 1<<1, | |
0dc1549b JP |
1373 | IFF_BONDING = 1<<2, |
1374 | IFF_ISATAP = 1<<3, | |
1375 | IFF_WAN_HDLC = 1<<4, | |
1376 | IFF_XMIT_DST_RELEASE = 1<<5, | |
1377 | IFF_DONT_BRIDGE = 1<<6, | |
1378 | IFF_DISABLE_NETPOLL = 1<<7, | |
1379 | IFF_MACVLAN_PORT = 1<<8, | |
1380 | IFF_BRIDGE_PORT = 1<<9, | |
1381 | IFF_OVS_DATAPATH = 1<<10, | |
1382 | IFF_TX_SKB_SHARING = 1<<11, | |
1383 | IFF_UNICAST_FLT = 1<<12, | |
1384 | IFF_TEAM_PORT = 1<<13, | |
1385 | IFF_SUPP_NOFCS = 1<<14, | |
1386 | IFF_LIVE_ADDR_CHANGE = 1<<15, | |
1387 | IFF_MACVLAN = 1<<16, | |
1388 | IFF_XMIT_DST_RELEASE_PERM = 1<<17, | |
1389 | IFF_IPVLAN_MASTER = 1<<18, | |
1390 | IFF_IPVLAN_SLAVE = 1<<19, | |
007979ea | 1391 | IFF_L3MDEV_MASTER = 1<<20, |
0dc1549b JP |
1392 | IFF_NO_QUEUE = 1<<21, |
1393 | IFF_OPENVSWITCH = 1<<22, | |
fee6d4c7 | 1394 | IFF_L3MDEV_SLAVE = 1<<23, |
c981e421 | 1395 | IFF_TEAM = 1<<24, |
d4ab4286 | 1396 | IFF_RXFH_CONFIGURED = 1<<25, |
871b642a | 1397 | IFF_PHONY_HEADROOM = 1<<26, |
3c175784 | 1398 | IFF_MACSEC = 1<<27, |
7aa98047 LR |
1399 | }; |
1400 | ||
1401 | #define IFF_802_1Q_VLAN IFF_802_1Q_VLAN | |
1402 | #define IFF_EBRIDGE IFF_EBRIDGE | |
7aa98047 | 1403 | #define IFF_BONDING IFF_BONDING |
7aa98047 | 1404 | #define IFF_ISATAP IFF_ISATAP |
7aa98047 LR |
1405 | #define IFF_WAN_HDLC IFF_WAN_HDLC |
1406 | #define IFF_XMIT_DST_RELEASE IFF_XMIT_DST_RELEASE | |
1407 | #define IFF_DONT_BRIDGE IFF_DONT_BRIDGE | |
1408 | #define IFF_DISABLE_NETPOLL IFF_DISABLE_NETPOLL | |
1409 | #define IFF_MACVLAN_PORT IFF_MACVLAN_PORT | |
1410 | #define IFF_BRIDGE_PORT IFF_BRIDGE_PORT | |
1411 | #define IFF_OVS_DATAPATH IFF_OVS_DATAPATH | |
1412 | #define IFF_TX_SKB_SHARING IFF_TX_SKB_SHARING | |
1413 | #define IFF_UNICAST_FLT IFF_UNICAST_FLT | |
1414 | #define IFF_TEAM_PORT IFF_TEAM_PORT | |
1415 | #define IFF_SUPP_NOFCS IFF_SUPP_NOFCS | |
1416 | #define IFF_LIVE_ADDR_CHANGE IFF_LIVE_ADDR_CHANGE | |
1417 | #define IFF_MACVLAN IFF_MACVLAN | |
02875878 | 1418 | #define IFF_XMIT_DST_RELEASE_PERM IFF_XMIT_DST_RELEASE_PERM |
2ad7bf36 MB |
1419 | #define IFF_IPVLAN_MASTER IFF_IPVLAN_MASTER |
1420 | #define IFF_IPVLAN_SLAVE IFF_IPVLAN_SLAVE | |
007979ea | 1421 | #define IFF_L3MDEV_MASTER IFF_L3MDEV_MASTER |
fa8187c9 | 1422 | #define IFF_NO_QUEUE IFF_NO_QUEUE |
35d4e172 | 1423 | #define IFF_OPENVSWITCH IFF_OPENVSWITCH |
8f25348b | 1424 | #define IFF_L3MDEV_SLAVE IFF_L3MDEV_SLAVE |
c981e421 | 1425 | #define IFF_TEAM IFF_TEAM |
d4ab4286 | 1426 | #define IFF_RXFH_CONFIGURED IFF_RXFH_CONFIGURED |
3c175784 | 1427 | #define IFF_MACSEC IFF_MACSEC |
7aa98047 | 1428 | |
536721b1 KK |
1429 | /** |
1430 | * struct net_device - The DEVICE structure. | |
1431 | * Actually, this whole structure is a big mistake. It mixes I/O | |
1432 | * data with strictly "high-level" data, and it has to know about | |
1433 | * almost every data structure used in the INET module. | |
1434 | * | |
1435 | * @name: This is the first field of the "visible" part of this structure | |
1436 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
1437 | * of the interface. | |
1438 | * | |
1439 | * @name_hlist: Device name hash chain, please keep it close to name[] | |
1440 | * @ifalias: SNMP alias | |
1441 | * @mem_end: Shared memory end | |
1442 | * @mem_start: Shared memory start | |
1443 | * @base_addr: Device I/O address | |
1444 | * @irq: Device IRQ number | |
1445 | * | |
14ffbbb8 TG |
1446 | * @carrier_changes: Stats to monitor carrier on<->off transitions |
1447 | * | |
536721b1 KK |
1448 | * @state: Generic network queuing layer state, see netdev_state_t |
1449 | * @dev_list: The global list of network devices | |
5e82b4b2 BH |
1450 | * @napi_list: List entry used for polling NAPI devices |
1451 | * @unreg_list: List entry when we are unregistering the | |
1452 | * device; see the function unregister_netdev | |
1453 | * @close_list: List entry used when we are closing the device | |
62d885fe BP |
1454 | * @ptype_all: Device-specific packet handlers for all protocols |
1455 | * @ptype_specific: Device-specific, protocol-specific packet handlers | |
536721b1 KK |
1456 | * |
1457 | * @adj_list: Directly linked devices, like slaves for bonding | |
536721b1 KK |
1458 | * @features: Currently active device features |
1459 | * @hw_features: User-changeable features | |
1460 | * | |
1461 | * @wanted_features: User-requested features | |
1462 | * @vlan_features: Mask of features inheritable by VLAN devices | |
1463 | * | |
1464 | * @hw_enc_features: Mask of features inherited by encapsulating devices | |
1465 | * This field indicates what encapsulation | |
1466 | * offloads the hardware is capable of doing, | |
1467 | * and drivers will need to set them appropriately. | |
1468 | * | |
1469 | * @mpls_features: Mask of features inheritable by MPLS | |
1470 | * | |
1471 | * @ifindex: interface index | |
5e82b4b2 | 1472 | * @group: The group the device belongs to |
536721b1 KK |
1473 | * |
1474 | * @stats: Statistics struct, which was left as a legacy, use | |
1475 | * rtnl_link_stats64 instead | |
1476 | * | |
1477 | * @rx_dropped: Dropped packets by core network, | |
1478 | * do not use this in drivers | |
1479 | * @tx_dropped: Dropped packets by core network, | |
1480 | * do not use this in drivers | |
6e7333d3 JW |
1481 | * @rx_nohandler: nohandler dropped packets by core network on |
1482 | * inactive devices, do not use this in drivers | |
536721b1 | 1483 | * |
536721b1 KK |
1484 | * @wireless_handlers: List of functions to handle Wireless Extensions, |
1485 | * instead of ioctl, | |
1486 | * see <net/iw_handler.h> for details. | |
1487 | * @wireless_data: Instance data managed by the core of wireless extensions | |
1488 | * | |
1489 | * @netdev_ops: Includes several pointers to callbacks, | |
1490 | * if one wants to override the ndo_*() functions | |
1491 | * @ethtool_ops: Management operations | |
f997c55c AA |
1492 | * @ndisc_ops: Includes callbacks for different IPv6 neighbour |
1493 | * discovery handling. Necessary for e.g. 6LoWPAN. | |
d476059e | 1494 | * @header_ops: Includes callbacks for creating,parsing,caching,etc |
536721b1 KK |
1495 | * of Layer 2 headers. |
1496 | * | |
1497 | * @flags: Interface flags (a la BSD) | |
1498 | * @priv_flags: Like 'flags' but invisible to userspace, | |
1499 | * see if.h for the definitions | |
1500 | * @gflags: Global flags ( kept as legacy ) | |
1501 | * @padded: How much padding added by alloc_netdev() | |
1502 | * @operstate: RFC2863 operstate | |
1503 | * @link_mode: Mapping policy to operstate | |
1504 | * @if_port: Selectable AUI, TP, ... | |
1505 | * @dma: DMA channel | |
1506 | * @mtu: Interface MTU value | |
61e84623 JW |
1507 | * @min_mtu: Interface Minimum MTU value |
1508 | * @max_mtu: Interface Maximum MTU value | |
536721b1 | 1509 | * @type: Interface hardware type |
2793a23a | 1510 | * @hard_header_len: Maximum hardware header length. |
536721b1 KK |
1511 | * |
1512 | * @needed_headroom: Extra headroom the hardware may need, but not in all | |
1513 | * cases can this be guaranteed | |
1514 | * @needed_tailroom: Extra tailroom the hardware may need, but not in all | |
1515 | * cases can this be guaranteed. Some cases also use | |
1516 | * LL_MAX_HEADER instead to allocate the skb | |
1517 | * | |
1518 | * interface address info: | |
1519 | * | |
1520 | * @perm_addr: Permanent hw address | |
1521 | * @addr_assign_type: Hw address assignment type | |
1522 | * @addr_len: Hardware address length | |
8626a0c8 | 1523 | * @neigh_priv_len: Used in neigh_alloc() |
536721b1 KK |
1524 | * @dev_id: Used to differentiate devices that share |
1525 | * the same link layer address | |
1526 | * @dev_port: Used to differentiate devices that share | |
1527 | * the same function | |
1528 | * @addr_list_lock: XXX: need comments on this one | |
5e82b4b2 | 1529 | * @uc_promisc: Counter that indicates promiscuous mode |
536721b1 KK |
1530 | * has been enabled due to the need to listen to |
1531 | * additional unicast addresses in a device that | |
1532 | * does not implement ndo_set_rx_mode() | |
14ffbbb8 TG |
1533 | * @uc: unicast mac addresses |
1534 | * @mc: multicast mac addresses | |
1535 | * @dev_addrs: list of device hw addresses | |
1536 | * @queues_kset: Group of all Kobjects in the Tx and RX queues | |
5e82b4b2 BH |
1537 | * @promiscuity: Number of times the NIC is told to work in |
1538 | * promiscuous mode; if it becomes 0 the NIC will | |
1539 | * exit promiscuous mode | |
536721b1 KK |
1540 | * @allmulti: Counter, enables or disables allmulticast mode |
1541 | * | |
1542 | * @vlan_info: VLAN info | |
1543 | * @dsa_ptr: dsa specific data | |
1544 | * @tipc_ptr: TIPC specific data | |
1545 | * @atalk_ptr: AppleTalk link | |
1546 | * @ip_ptr: IPv4 specific data | |
1547 | * @dn_ptr: DECnet specific data | |
1548 | * @ip6_ptr: IPv6 specific data | |
1549 | * @ax25_ptr: AX.25 specific data | |
1550 | * @ieee80211_ptr: IEEE 802.11 specific data, assign before registering | |
1551 | * | |
1552 | * @last_rx: Time of last Rx | |
1553 | * @dev_addr: Hw address (before bcast, | |
1554 | * because most packets are unicast) | |
1555 | * | |
1556 | * @_rx: Array of RX queues | |
1557 | * @num_rx_queues: Number of RX queues | |
1558 | * allocated at register_netdev() time | |
1559 | * @real_num_rx_queues: Number of RX queues currently active in device | |
1560 | * | |
1561 | * @rx_handler: handler for received packets | |
1562 | * @rx_handler_data: XXX: need comments on this one | |
1563 | * @ingress_queue: XXX: need comments on this one | |
1564 | * @broadcast: hw bcast address | |
1565 | * | |
14ffbbb8 TG |
1566 | * @rx_cpu_rmap: CPU reverse-mapping for RX completion interrupts, |
1567 | * indexed by RX queue number. Assigned by driver. | |
1568 | * This must only be set if the ndo_rx_flow_steer | |
1569 | * operation is defined | |
1570 | * @index_hlist: Device index hash chain | |
1571 | * | |
536721b1 KK |
1572 | * @_tx: Array of TX queues |
1573 | * @num_tx_queues: Number of TX queues allocated at alloc_netdev_mq() time | |
1574 | * @real_num_tx_queues: Number of TX queues currently active in device | |
1575 | * @qdisc: Root qdisc from userspace point of view | |
1576 | * @tx_queue_len: Max frames per queue allowed | |
1577 | * @tx_global_lock: XXX: need comments on this one | |
1578 | * | |
1579 | * @xps_maps: XXX: need comments on this one | |
1580 | * | |
536721b1 | 1581 | * @watchdog_timeo: Represents the timeout that is used by |
5e82b4b2 | 1582 | * the watchdog (see dev_watchdog()) |
536721b1 KK |
1583 | * @watchdog_timer: List of timers |
1584 | * | |
1585 | * @pcpu_refcnt: Number of references to this device | |
1586 | * @todo_list: Delayed register/unregister | |
536721b1 KK |
1587 | * @link_watch_list: XXX: need comments on this one |
1588 | * | |
1589 | * @reg_state: Register/unregister state machine | |
1590 | * @dismantle: Device is going to be freed | |
1591 | * @rtnl_link_state: This enum represents the phases of creating | |
1592 | * a new link | |
1593 | * | |
1594 | * @destructor: Called from unregister, | |
1595 | * can be used to call free_netdev | |
1596 | * @npinfo: XXX: need comments on this one | |
1597 | * @nd_net: Network namespace this network device is inside | |
1598 | * | |
1599 | * @ml_priv: Mid-layer private | |
1600 | * @lstats: Loopback statistics | |
1601 | * @tstats: Tunnel statistics | |
1602 | * @dstats: Dummy statistics | |
1603 | * @vstats: Virtual ethernet statistics | |
1604 | * | |
1605 | * @garp_port: GARP | |
1606 | * @mrp_port: MRP | |
1607 | * | |
1608 | * @dev: Class/net/name entry | |
1609 | * @sysfs_groups: Space for optional device, statistics and wireless | |
1610 | * sysfs groups | |
1611 | * | |
1612 | * @sysfs_rx_queue_group: Space for optional per-rx queue attributes | |
1613 | * @rtnl_link_ops: Rtnl_link_ops | |
1614 | * | |
1615 | * @gso_max_size: Maximum size of generic segmentation offload | |
1616 | * @gso_max_segs: Maximum number of segments that can be passed to the | |
1617 | * NIC for GSO | |
1618 | * | |
1619 | * @dcbnl_ops: Data Center Bridging netlink ops | |
1620 | * @num_tc: Number of traffic classes in the net device | |
1621 | * @tc_to_txq: XXX: need comments on this one | |
920c1cd3 | 1622 | * @prio_tc_map: XXX: need comments on this one |
536721b1 KK |
1623 | * |
1624 | * @fcoe_ddp_xid: Max exchange id for FCoE LRO by ddp | |
1625 | * | |
1626 | * @priomap: XXX: need comments on this one | |
1627 | * @phydev: Physical device may attach itself | |
1628 | * for hardware timestamping | |
1629 | * | |
123b3652 ED |
1630 | * @qdisc_tx_busylock: lockdep class annotating Qdisc->busylock spinlock |
1631 | * @qdisc_running_key: lockdep class annotating Qdisc->running seqcount | |
536721b1 | 1632 | * |
d746d707 AK |
1633 | * @proto_down: protocol port state information can be sent to the |
1634 | * switch driver and used to set the phys state of the | |
1635 | * switch port. | |
1636 | * | |
1da177e4 LT |
1637 | * FIXME: cleanup struct net_device such that network protocol info |
1638 | * moves out. | |
1639 | */ | |
1640 | ||
d94d9fee | 1641 | struct net_device { |
1da177e4 | 1642 | char name[IFNAMSIZ]; |
9356b8fc | 1643 | struct hlist_node name_hlist; |
0b815a1a | 1644 | char *ifalias; |
1da177e4 LT |
1645 | /* |
1646 | * I/O specific fields | |
1647 | * FIXME: Merge these and struct ifmap into one | |
1648 | */ | |
536721b1 KK |
1649 | unsigned long mem_end; |
1650 | unsigned long mem_start; | |
1651 | unsigned long base_addr; | |
1652 | int irq; | |
1da177e4 | 1653 | |
14ffbbb8 TG |
1654 | atomic_t carrier_changes; |
1655 | ||
1da177e4 | 1656 | /* |
536721b1 KK |
1657 | * Some hardware also needs these fields (state,dev_list, |
1658 | * napi_list,unreg_list,close_list) but they are not | |
1da177e4 LT |
1659 | * part of the usual set specified in Space.c. |
1660 | */ | |
1661 | ||
1da177e4 LT |
1662 | unsigned long state; |
1663 | ||
7562f876 | 1664 | struct list_head dev_list; |
bea3348e | 1665 | struct list_head napi_list; |
44a0873d | 1666 | struct list_head unreg_list; |
5cde2829 | 1667 | struct list_head close_list; |
7866a621 SN |
1668 | struct list_head ptype_all; |
1669 | struct list_head ptype_specific; | |
2f268f12 | 1670 | |
2f268f12 VF |
1671 | struct { |
1672 | struct list_head upper; | |
1673 | struct list_head lower; | |
1674 | } adj_list; | |
1675 | ||
c8f44aff | 1676 | netdev_features_t features; |
c8f44aff | 1677 | netdev_features_t hw_features; |
c8f44aff | 1678 | netdev_features_t wanted_features; |
c8f44aff | 1679 | netdev_features_t vlan_features; |
6a674e9c | 1680 | netdev_features_t hw_enc_features; |
0d89d203 | 1681 | netdev_features_t mpls_features; |
802ab55a | 1682 | netdev_features_t gso_partial_features; |
04ed3e74 | 1683 | |
1da177e4 | 1684 | int ifindex; |
7a66bbc9 | 1685 | int group; |
1da177e4 | 1686 | |
c45d286e | 1687 | struct net_device_stats stats; |
015f0688 | 1688 | |
015f0688 ED |
1689 | atomic_long_t rx_dropped; |
1690 | atomic_long_t tx_dropped; | |
6e7333d3 | 1691 | atomic_long_t rx_nohandler; |
1da177e4 | 1692 | |
b86e0280 | 1693 | #ifdef CONFIG_WIRELESS_EXT |
5e82b4b2 BH |
1694 | const struct iw_handler_def *wireless_handlers; |
1695 | struct iw_public_data *wireless_data; | |
b86e0280 | 1696 | #endif |
d314774c | 1697 | const struct net_device_ops *netdev_ops; |
76fd8593 | 1698 | const struct ethtool_ops *ethtool_ops; |
4170604f | 1699 | #ifdef CONFIG_NET_SWITCHDEV |
9d47c0a2 | 1700 | const struct switchdev_ops *switchdev_ops; |
4170604f | 1701 | #endif |
1b69c6d0 DA |
1702 | #ifdef CONFIG_NET_L3_MASTER_DEV |
1703 | const struct l3mdev_ops *l3mdev_ops; | |
1704 | #endif | |
f997c55c AA |
1705 | #if IS_ENABLED(CONFIG_IPV6) |
1706 | const struct ndisc_ops *ndisc_ops; | |
1707 | #endif | |
1da177e4 | 1708 | |
3b04ddde SH |
1709 | const struct header_ops *header_ops; |
1710 | ||
536721b1 KK |
1711 | unsigned int flags; |
1712 | unsigned int priv_flags; | |
1713 | ||
1da177e4 | 1714 | unsigned short gflags; |
536721b1 | 1715 | unsigned short padded; |
1da177e4 | 1716 | |
536721b1 KK |
1717 | unsigned char operstate; |
1718 | unsigned char link_mode; | |
b00055aa | 1719 | |
536721b1 KK |
1720 | unsigned char if_port; |
1721 | unsigned char dma; | |
bdc220da | 1722 | |
536721b1 | 1723 | unsigned int mtu; |
61e84623 JW |
1724 | unsigned int min_mtu; |
1725 | unsigned int max_mtu; | |
536721b1 KK |
1726 | unsigned short type; |
1727 | unsigned short hard_header_len; | |
1da177e4 | 1728 | |
f5184d26 JB |
1729 | unsigned short needed_headroom; |
1730 | unsigned short needed_tailroom; | |
1731 | ||
1da177e4 | 1732 | /* Interface address info. */ |
536721b1 KK |
1733 | unsigned char perm_addr[MAX_ADDR_LEN]; |
1734 | unsigned char addr_assign_type; | |
1735 | unsigned char addr_len; | |
a0a9663d | 1736 | unsigned short neigh_priv_len; |
536721b1 KK |
1737 | unsigned short dev_id; |
1738 | unsigned short dev_port; | |
ccffad25 | 1739 | spinlock_t addr_list_lock; |
14ffbbb8 TG |
1740 | unsigned char name_assign_type; |
1741 | bool uc_promisc; | |
536721b1 KK |
1742 | struct netdev_hw_addr_list uc; |
1743 | struct netdev_hw_addr_list mc; | |
1744 | struct netdev_hw_addr_list dev_addrs; | |
1745 | ||
4c3d5e7b ED |
1746 | #ifdef CONFIG_SYSFS |
1747 | struct kset *queues_kset; | |
1748 | #endif | |
9d45abe1 WC |
1749 | unsigned int promiscuity; |
1750 | unsigned int allmulti; | |
1da177e4 | 1751 | |
1da177e4 | 1752 | |
5e82b4b2 | 1753 | /* Protocol-specific pointers */ |
65ac6a5f | 1754 | |
d11ead75 | 1755 | #if IS_ENABLED(CONFIG_VLAN_8021Q) |
536721b1 | 1756 | struct vlan_info __rcu *vlan_info; |
65ac6a5f | 1757 | #endif |
34a430d7 | 1758 | #if IS_ENABLED(CONFIG_NET_DSA) |
536721b1 | 1759 | struct dsa_switch_tree *dsa_ptr; |
37cb0620 YX |
1760 | #endif |
1761 | #if IS_ENABLED(CONFIG_TIPC) | |
536721b1 | 1762 | struct tipc_bearer __rcu *tipc_ptr; |
91da11f8 | 1763 | #endif |
536721b1 KK |
1764 | void *atalk_ptr; |
1765 | struct in_device __rcu *ip_ptr; | |
1766 | struct dn_dev __rcu *dn_ptr; | |
1767 | struct inet6_dev __rcu *ip6_ptr; | |
1768 | void *ax25_ptr; | |
1769 | struct wireless_dev *ieee80211_ptr; | |
98a18b6f | 1770 | struct wpan_dev *ieee802154_ptr; |
03c57747 RS |
1771 | #if IS_ENABLED(CONFIG_MPLS_ROUTING) |
1772 | struct mpls_dev __rcu *mpls_ptr; | |
1773 | #endif | |
1da177e4 | 1774 | |
9356b8fc | 1775 | /* |
cd13539b | 1776 | * Cache lines mostly used on receive path (including eth_type_trans()) |
9356b8fc | 1777 | */ |
536721b1 | 1778 | unsigned long last_rx; |
4dc89133 | 1779 | |
9356b8fc | 1780 | /* Interface address info used in eth_type_trans() */ |
536721b1 | 1781 | unsigned char *dev_addr; |
f001fde5 | 1782 | |
a953be53 | 1783 | #ifdef CONFIG_SYSFS |
0a9627f2 TH |
1784 | struct netdev_rx_queue *_rx; |
1785 | ||
0a9627f2 | 1786 | unsigned int num_rx_queues; |
62fe0b40 | 1787 | unsigned int real_num_rx_queues; |
df334545 | 1788 | #endif |
0a9627f2 | 1789 | |
3b47d303 | 1790 | unsigned long gro_flush_timeout; |
61391cde | 1791 | rx_handler_func_t __rcu *rx_handler; |
1792 | void __rcu *rx_handler_data; | |
e8a0464c | 1793 | |
4cda01e8 | 1794 | #ifdef CONFIG_NET_CLS_ACT |
d2788d34 DB |
1795 | struct tcf_proto __rcu *ingress_cl_list; |
1796 | #endif | |
24824a09 | 1797 | struct netdev_queue __rcu *ingress_queue; |
e687ad60 | 1798 | #ifdef CONFIG_NETFILTER_INGRESS |
e3b37f11 | 1799 | struct nf_hook_entry __rcu *nf_hooks_ingress; |
e687ad60 | 1800 | #endif |
d2788d34 | 1801 | |
536721b1 | 1802 | unsigned char broadcast[MAX_ADDR_LEN]; |
14ffbbb8 TG |
1803 | #ifdef CONFIG_RFS_ACCEL |
1804 | struct cpu_rmap *rx_cpu_rmap; | |
1805 | #endif | |
1806 | struct hlist_node index_hlist; | |
cd13539b ED |
1807 | |
1808 | /* | |
1809 | * Cache lines mostly used on transmit path | |
1810 | */ | |
e8a0464c DM |
1811 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
1812 | unsigned int num_tx_queues; | |
fd2ea0a7 | 1813 | unsigned int real_num_tx_queues; |
af356afa | 1814 | struct Qdisc *qdisc; |
59cc1f61 JK |
1815 | #ifdef CONFIG_NET_SCHED |
1816 | DECLARE_HASHTABLE (qdisc_hash, 4); | |
1817 | #endif | |
536721b1 | 1818 | unsigned long tx_queue_len; |
c3f26a26 | 1819 | spinlock_t tx_global_lock; |
14ffbbb8 | 1820 | int watchdog_timeo; |
cd13539b | 1821 | |
bf264145 | 1822 | #ifdef CONFIG_XPS |
a4177869 | 1823 | struct xps_dev_maps __rcu *xps_maps; |
bf264145 | 1824 | #endif |
1f211a1b DB |
1825 | #ifdef CONFIG_NET_CLS_ACT |
1826 | struct tcf_proto __rcu *egress_cl_list; | |
1827 | #endif | |
0c4f691f | 1828 | |
9356b8fc | 1829 | /* These may be needed for future network-power-down code. */ |
9356b8fc ED |
1830 | struct timer_list watchdog_timer; |
1831 | ||
29b4433d | 1832 | int __percpu *pcpu_refcnt; |
1da177e4 | 1833 | struct list_head todo_list; |
1da177e4 | 1834 | |
e014debe | 1835 | struct list_head link_watch_list; |
572a103d | 1836 | |
1da177e4 | 1837 | enum { NETREG_UNINITIALIZED=0, |
b17a7c17 | 1838 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
1839 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
1840 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
1841 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 1842 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
449f4544 ED |
1843 | } reg_state:8; |
1844 | ||
536721b1 | 1845 | bool dismantle; |
a2835763 PM |
1846 | |
1847 | enum { | |
1848 | RTNL_LINK_INITIALIZED, | |
1849 | RTNL_LINK_INITIALIZING, | |
1850 | } rtnl_link_state:16; | |
1da177e4 | 1851 | |
d314774c | 1852 | void (*destructor)(struct net_device *dev); |
1da177e4 | 1853 | |
1da177e4 | 1854 | #ifdef CONFIG_NETPOLL |
5fbee843 | 1855 | struct netpoll_info __rcu *npinfo; |
1da177e4 | 1856 | #endif |
eae792b7 | 1857 | |
0c5c9fb5 | 1858 | possible_net_t nd_net; |
4a1c5371 | 1859 | |
4951704b | 1860 | /* mid-layer private */ |
a7855c78 | 1861 | union { |
536721b1 KK |
1862 | void *ml_priv; |
1863 | struct pcpu_lstats __percpu *lstats; | |
8f84985f | 1864 | struct pcpu_sw_netstats __percpu *tstats; |
536721b1 KK |
1865 | struct pcpu_dstats __percpu *dstats; |
1866 | struct pcpu_vstats __percpu *vstats; | |
a7855c78 | 1867 | }; |
536721b1 | 1868 | |
3cc77ec7 | 1869 | struct garp_port __rcu *garp_port; |
febf018d | 1870 | struct mrp_port __rcu *mrp_port; |
1da177e4 | 1871 | |
5e82b4b2 | 1872 | struct device dev; |
0c509a6c | 1873 | const struct attribute_group *sysfs_groups[4]; |
a953be53 | 1874 | const struct attribute_group *sysfs_rx_queue_group; |
38f7b870 | 1875 | |
38f7b870 | 1876 | const struct rtnl_link_ops *rtnl_link_ops; |
f25f4e44 | 1877 | |
82cc1a7a PWJ |
1878 | /* for setting kernel sock attribute on TCP connection setup */ |
1879 | #define GSO_MAX_SIZE 65536 | |
1880 | unsigned int gso_max_size; | |
30b678d8 BH |
1881 | #define GSO_MAX_SEGS 65535 |
1882 | u16 gso_max_segs; | |
743b03a8 | 1883 | |
7a6b6f51 | 1884 | #ifdef CONFIG_DCB |
32953543 | 1885 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
2f90b865 | 1886 | #endif |
5e82b4b2 BH |
1887 | u8 num_tc; |
1888 | struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE]; | |
1889 | u8 prio_tc_map[TC_BITMASK + 1]; | |
2f90b865 | 1890 | |
d11ead75 | 1891 | #if IS_ENABLED(CONFIG_FCOE) |
4d288d57 | 1892 | unsigned int fcoe_ddp_xid; |
5bc1421e | 1893 | #endif |
86f8515f | 1894 | #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO) |
5bc1421e | 1895 | struct netprio_map __rcu *priomap; |
4d288d57 | 1896 | #endif |
5e82b4b2 BH |
1897 | struct phy_device *phydev; |
1898 | struct lock_class_key *qdisc_tx_busylock; | |
f9eb8aea | 1899 | struct lock_class_key *qdisc_running_key; |
5e82b4b2 | 1900 | bool proto_down; |
1da177e4 | 1901 | }; |
43cb76d9 | 1902 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 LT |
1903 | |
1904 | #define NETDEV_ALIGN 32 | |
1da177e4 | 1905 | |
4f57c087 JF |
1906 | static inline |
1907 | int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio) | |
1908 | { | |
1909 | return dev->prio_tc_map[prio & TC_BITMASK]; | |
1910 | } | |
1911 | ||
1912 | static inline | |
1913 | int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc) | |
1914 | { | |
1915 | if (tc >= dev->num_tc) | |
1916 | return -EINVAL; | |
1917 | ||
1918 | dev->prio_tc_map[prio & TC_BITMASK] = tc & TC_BITMASK; | |
1919 | return 0; | |
1920 | } | |
1921 | ||
8d059b0f | 1922 | int netdev_txq_to_tc(struct net_device *dev, unsigned int txq); |
9cf1f6a8 AD |
1923 | void netdev_reset_tc(struct net_device *dev); |
1924 | int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset); | |
1925 | int netdev_set_num_tc(struct net_device *dev, u8 num_tc); | |
4f57c087 JF |
1926 | |
1927 | static inline | |
1928 | int netdev_get_num_tc(struct net_device *dev) | |
1929 | { | |
1930 | return dev->num_tc; | |
1931 | } | |
1932 | ||
e8a0464c DM |
1933 | static inline |
1934 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
1935 | unsigned int index) | |
1936 | { | |
1937 | return &dev->_tx[index]; | |
1938 | } | |
1939 | ||
10c51b56 DB |
1940 | static inline struct netdev_queue *skb_get_tx_queue(const struct net_device *dev, |
1941 | const struct sk_buff *skb) | |
1942 | { | |
1943 | return netdev_get_tx_queue(dev, skb_get_queue_mapping(skb)); | |
1944 | } | |
1945 | ||
e8a0464c DM |
1946 | static inline void netdev_for_each_tx_queue(struct net_device *dev, |
1947 | void (*f)(struct net_device *, | |
1948 | struct netdev_queue *, | |
1949 | void *), | |
1950 | void *arg) | |
1951 | { | |
1952 | unsigned int i; | |
1953 | ||
1954 | for (i = 0; i < dev->num_tx_queues; i++) | |
1955 | f(dev, &dev->_tx[i], arg); | |
1956 | } | |
1957 | ||
d3fff6c4 ED |
1958 | #define netdev_lockdep_set_classes(dev) \ |
1959 | { \ | |
1960 | static struct lock_class_key qdisc_tx_busylock_key; \ | |
1961 | static struct lock_class_key qdisc_running_key; \ | |
1962 | static struct lock_class_key qdisc_xmit_lock_key; \ | |
1963 | static struct lock_class_key dev_addr_list_lock_key; \ | |
1964 | unsigned int i; \ | |
1965 | \ | |
1966 | (dev)->qdisc_tx_busylock = &qdisc_tx_busylock_key; \ | |
1967 | (dev)->qdisc_running_key = &qdisc_running_key; \ | |
1968 | lockdep_set_class(&(dev)->addr_list_lock, \ | |
1969 | &dev_addr_list_lock_key); \ | |
1970 | for (i = 0; i < (dev)->num_tx_queues; i++) \ | |
1971 | lockdep_set_class(&(dev)->_tx[i]._xmit_lock, \ | |
1972 | &qdisc_xmit_lock_key); \ | |
1973 | } | |
1974 | ||
f629d208 | 1975 | struct netdev_queue *netdev_pick_tx(struct net_device *dev, |
f663dd9a JW |
1976 | struct sk_buff *skb, |
1977 | void *accel_priv); | |
8c4c49df | 1978 | |
871b642a PA |
1979 | /* returns the headroom that the master device needs to take in account |
1980 | * when forwarding to this dev | |
1981 | */ | |
1982 | static inline unsigned netdev_get_fwd_headroom(struct net_device *dev) | |
1983 | { | |
1984 | return dev->priv_flags & IFF_PHONY_HEADROOM ? 0 : dev->needed_headroom; | |
1985 | } | |
1986 | ||
1987 | static inline void netdev_set_rx_headroom(struct net_device *dev, int new_hr) | |
1988 | { | |
1989 | if (dev->netdev_ops->ndo_set_rx_headroom) | |
1990 | dev->netdev_ops->ndo_set_rx_headroom(dev, new_hr); | |
1991 | } | |
1992 | ||
1993 | /* set the device rx headroom to the dev's default */ | |
1994 | static inline void netdev_reset_rx_headroom(struct net_device *dev) | |
1995 | { | |
1996 | netdev_set_rx_headroom(dev, -1); | |
1997 | } | |
1998 | ||
c346dca1 YH |
1999 | /* |
2000 | * Net namespace inlines | |
2001 | */ | |
2002 | static inline | |
2003 | struct net *dev_net(const struct net_device *dev) | |
2004 | { | |
c2d9ba9b | 2005 | return read_pnet(&dev->nd_net); |
c346dca1 YH |
2006 | } |
2007 | ||
2008 | static inline | |
f5aa23fd | 2009 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 | 2010 | { |
0c5c9fb5 | 2011 | write_pnet(&dev->nd_net, net); |
c346dca1 YH |
2012 | } |
2013 | ||
3e8a72d1 | 2014 | static inline bool netdev_uses_dsa(struct net_device *dev) |
cf85d08f | 2015 | { |
3fc88677 | 2016 | #if IS_ENABLED(CONFIG_NET_DSA) |
5aed85ce FF |
2017 | if (dev->dsa_ptr != NULL) |
2018 | return dsa_uses_tagged_protocol(dev->dsa_ptr); | |
396138f0 | 2019 | #endif |
5aed85ce | 2020 | return false; |
396138f0 LB |
2021 | } |
2022 | ||
bea3348e SH |
2023 | /** |
2024 | * netdev_priv - access network device private data | |
2025 | * @dev: network device | |
2026 | * | |
2027 | * Get network device private data | |
2028 | */ | |
6472ce60 | 2029 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 2030 | { |
1ce8e7b5 | 2031 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
1da177e4 LT |
2032 | } |
2033 | ||
1da177e4 LT |
2034 | /* Set the sysfs physical device reference for the network logical device |
2035 | * if set prior to registration will cause a symlink during initialization. | |
2036 | */ | |
43cb76d9 | 2037 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 2038 | |
384912ed | 2039 | /* Set the sysfs device type for the network logical device to allow |
3f79410c | 2040 | * fine-grained identification of different network device types. For |
5e82b4b2 | 2041 | * example Ethernet, Wireless LAN, Bluetooth, WiMAX etc. |
384912ed MH |
2042 | */ |
2043 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) | |
2044 | ||
82dc3c63 ED |
2045 | /* Default NAPI poll() weight |
2046 | * Device drivers are strongly advised to not use bigger value | |
2047 | */ | |
2048 | #define NAPI_POLL_WEIGHT 64 | |
2049 | ||
3b582cc1 | 2050 | /** |
5e82b4b2 | 2051 | * netif_napi_add - initialize a NAPI context |
3b582cc1 | 2052 | * @dev: network device |
5e82b4b2 | 2053 | * @napi: NAPI context |
3b582cc1 SH |
2054 | * @poll: polling function |
2055 | * @weight: default weight | |
2056 | * | |
5e82b4b2 BH |
2057 | * netif_napi_add() must be used to initialize a NAPI context prior to calling |
2058 | * *any* of the other NAPI-related functions. | |
3b582cc1 | 2059 | */ |
d565b0a1 HX |
2060 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
2061 | int (*poll)(struct napi_struct *, int), int weight); | |
bea3348e | 2062 | |
d64b5e85 | 2063 | /** |
5e82b4b2 | 2064 | * netif_tx_napi_add - initialize a NAPI context |
d64b5e85 | 2065 | * @dev: network device |
5e82b4b2 | 2066 | * @napi: NAPI context |
d64b5e85 ED |
2067 | * @poll: polling function |
2068 | * @weight: default weight | |
2069 | * | |
2070 | * This variant of netif_napi_add() should be used from drivers using NAPI | |
2071 | * to exclusively poll a TX queue. | |
2072 | * This will avoid we add it into napi_hash[], thus polluting this hash table. | |
2073 | */ | |
2074 | static inline void netif_tx_napi_add(struct net_device *dev, | |
2075 | struct napi_struct *napi, | |
2076 | int (*poll)(struct napi_struct *, int), | |
2077 | int weight) | |
2078 | { | |
2079 | set_bit(NAPI_STATE_NO_BUSY_POLL, &napi->state); | |
2080 | netif_napi_add(dev, napi, poll, weight); | |
2081 | } | |
2082 | ||
d8156534 | 2083 | /** |
5e82b4b2 BH |
2084 | * netif_napi_del - remove a NAPI context |
2085 | * @napi: NAPI context | |
d8156534 | 2086 | * |
5e82b4b2 | 2087 | * netif_napi_del() removes a NAPI context from the network device NAPI list |
d8156534 | 2088 | */ |
d565b0a1 HX |
2089 | void netif_napi_del(struct napi_struct *napi); |
2090 | ||
2091 | struct napi_gro_cb { | |
78a478d0 | 2092 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
5e82b4b2 | 2093 | void *frag0; |
78a478d0 | 2094 | |
7489594c HX |
2095 | /* Length of frag0. */ |
2096 | unsigned int frag0_len; | |
2097 | ||
86911732 | 2098 | /* This indicates where we are processing relative to skb->data. */ |
5e82b4b2 | 2099 | int data_offset; |
86911732 | 2100 | |
d565b0a1 | 2101 | /* This is non-zero if the packet cannot be merged with the new skb. */ |
bf5a755f JC |
2102 | u16 flush; |
2103 | ||
2104 | /* Save the IP ID here and check when we get to the transport layer */ | |
2105 | u16 flush_id; | |
d565b0a1 HX |
2106 | |
2107 | /* Number of segments aggregated. */ | |
2e71a6f8 ED |
2108 | u16 count; |
2109 | ||
15e2396d TH |
2110 | /* Start offset for remote checksum offload */ |
2111 | u16 gro_remcsum_start; | |
2112 | ||
2e71a6f8 ED |
2113 | /* jiffies when first packet was created/queued */ |
2114 | unsigned long age; | |
86347245 | 2115 | |
afe93325 | 2116 | /* Used in ipv6_gro_receive() and foo-over-udp */ |
b582ef09 OG |
2117 | u16 proto; |
2118 | ||
baa32ff4 TH |
2119 | /* This is non-zero if the packet may be of the same flow. */ |
2120 | u8 same_flow:1; | |
2121 | ||
fac8e0f5 JG |
2122 | /* Used in tunnel GRO receive */ |
2123 | u8 encap_mark:1; | |
573e8fca TH |
2124 | |
2125 | /* GRO checksum is valid */ | |
2126 | u8 csum_valid:1; | |
2127 | ||
662880f4 TH |
2128 | /* Number of checksums via CHECKSUM_UNNECESSARY */ |
2129 | u8 csum_cnt:3; | |
c3c7c254 | 2130 | |
baa32ff4 TH |
2131 | /* Free the skb? */ |
2132 | u8 free:2; | |
2133 | #define NAPI_GRO_FREE 1 | |
2134 | #define NAPI_GRO_FREE_STOLEN_HEAD 2 | |
2135 | ||
efc98d08 TH |
2136 | /* Used in foo-over-udp, set in udp[46]_gro_receive */ |
2137 | u8 is_ipv6:1; | |
2138 | ||
a0ca153f AD |
2139 | /* Used in GRE, set in fou/gue_gro_receive */ |
2140 | u8 is_fou:1; | |
2141 | ||
1530545e AD |
2142 | /* Used to determine if flush_id can be ignored */ |
2143 | u8 is_atomic:1; | |
2144 | ||
fcd91dd4 SD |
2145 | /* Number of gro_receive callbacks this packet already went through */ |
2146 | u8 recursion_counter:4; | |
2147 | ||
2148 | /* 1 bit hole */ | |
baa32ff4 | 2149 | |
bf5a755f JC |
2150 | /* used to support CHECKSUM_COMPLETE for tunneling protocols */ |
2151 | __wsum csum; | |
2152 | ||
c3c7c254 ED |
2153 | /* used in skb_gro_receive() slow path */ |
2154 | struct sk_buff *last; | |
d565b0a1 HX |
2155 | }; |
2156 | ||
2157 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) | |
d8156534 | 2158 | |
fcd91dd4 SD |
2159 | #define GRO_RECURSION_LIMIT 15 |
2160 | static inline int gro_recursion_inc_test(struct sk_buff *skb) | |
2161 | { | |
2162 | return ++NAPI_GRO_CB(skb)->recursion_counter == GRO_RECURSION_LIMIT; | |
2163 | } | |
2164 | ||
2165 | typedef struct sk_buff **(*gro_receive_t)(struct sk_buff **, struct sk_buff *); | |
2166 | static inline struct sk_buff **call_gro_receive(gro_receive_t cb, | |
2167 | struct sk_buff **head, | |
2168 | struct sk_buff *skb) | |
2169 | { | |
2170 | if (unlikely(gro_recursion_inc_test(skb))) { | |
2171 | NAPI_GRO_CB(skb)->flush |= 1; | |
2172 | return NULL; | |
2173 | } | |
2174 | ||
2175 | return cb(head, skb); | |
2176 | } | |
2177 | ||
2178 | typedef struct sk_buff **(*gro_receive_sk_t)(struct sock *, struct sk_buff **, | |
2179 | struct sk_buff *); | |
2180 | static inline struct sk_buff **call_gro_receive_sk(gro_receive_sk_t cb, | |
2181 | struct sock *sk, | |
2182 | struct sk_buff **head, | |
2183 | struct sk_buff *skb) | |
2184 | { | |
2185 | if (unlikely(gro_recursion_inc_test(skb))) { | |
2186 | NAPI_GRO_CB(skb)->flush |= 1; | |
2187 | return NULL; | |
2188 | } | |
2189 | ||
2190 | return cb(sk, head, skb); | |
2191 | } | |
2192 | ||
1da177e4 | 2193 | struct packet_type { |
f2ccd8fa DM |
2194 | __be16 type; /* This is really htons(ether_type). */ |
2195 | struct net_device *dev; /* NULL is wildcarded here */ | |
2196 | int (*func) (struct sk_buff *, | |
2197 | struct net_device *, | |
2198 | struct packet_type *, | |
2199 | struct net_device *); | |
c0de08d0 EL |
2200 | bool (*id_match)(struct packet_type *ptype, |
2201 | struct sock *sk); | |
1da177e4 LT |
2202 | void *af_packet_priv; |
2203 | struct list_head list; | |
2204 | }; | |
2205 | ||
f191a1d1 | 2206 | struct offload_callbacks { |
576a30eb | 2207 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
c8f44aff | 2208 | netdev_features_t features); |
d565b0a1 | 2209 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
a2b12f3c | 2210 | struct sk_buff *skb); |
299603e8 | 2211 | int (*gro_complete)(struct sk_buff *skb, int nhoff); |
f191a1d1 VY |
2212 | }; |
2213 | ||
2214 | struct packet_offload { | |
2215 | __be16 type; /* This is really htons(ether_type). */ | |
bdef7de4 | 2216 | u16 priority; |
f191a1d1 VY |
2217 | struct offload_callbacks callbacks; |
2218 | struct list_head list; | |
1da177e4 LT |
2219 | }; |
2220 | ||
5e82b4b2 | 2221 | /* often modified stats are per-CPU, other are shared (netdev->stats) */ |
8f84985f LR |
2222 | struct pcpu_sw_netstats { |
2223 | u64 rx_packets; | |
2224 | u64 rx_bytes; | |
2225 | u64 tx_packets; | |
2226 | u64 tx_bytes; | |
2227 | struct u64_stats_sync syncp; | |
2228 | }; | |
2229 | ||
aabc92bb PNA |
2230 | #define __netdev_alloc_pcpu_stats(type, gfp) \ |
2231 | ({ \ | |
2232 | typeof(type) __percpu *pcpu_stats = alloc_percpu_gfp(type, gfp);\ | |
2233 | if (pcpu_stats) { \ | |
2234 | int __cpu; \ | |
2235 | for_each_possible_cpu(__cpu) { \ | |
2236 | typeof(type) *stat; \ | |
2237 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ | |
2238 | u64_stats_init(&stat->syncp); \ | |
2239 | } \ | |
2240 | } \ | |
2241 | pcpu_stats; \ | |
1c213bd2 WC |
2242 | }) |
2243 | ||
aabc92bb | 2244 | #define netdev_alloc_pcpu_stats(type) \ |
326fcfa5 | 2245 | __netdev_alloc_pcpu_stats(type, GFP_KERNEL) |
aabc92bb | 2246 | |
764f5e54 JP |
2247 | enum netdev_lag_tx_type { |
2248 | NETDEV_LAG_TX_TYPE_UNKNOWN, | |
2249 | NETDEV_LAG_TX_TYPE_RANDOM, | |
2250 | NETDEV_LAG_TX_TYPE_BROADCAST, | |
2251 | NETDEV_LAG_TX_TYPE_ROUNDROBIN, | |
2252 | NETDEV_LAG_TX_TYPE_ACTIVEBACKUP, | |
2253 | NETDEV_LAG_TX_TYPE_HASH, | |
2254 | }; | |
2255 | ||
2256 | struct netdev_lag_upper_info { | |
2257 | enum netdev_lag_tx_type tx_type; | |
2258 | }; | |
2259 | ||
fb1b2e3c JP |
2260 | struct netdev_lag_lower_state_info { |
2261 | u8 link_up : 1, | |
2262 | tx_enabled : 1; | |
2263 | }; | |
2264 | ||
1da177e4 LT |
2265 | #include <linux/notifier.h> |
2266 | ||
dcfe1421 AW |
2267 | /* netdevice notifier chain. Please remember to update the rtnetlink |
2268 | * notification exclusion list in rtnetlink_event() when adding new | |
2269 | * types. | |
2270 | */ | |
2271 | #define NETDEV_UP 0x0001 /* For now you can't veto a device up/down */ | |
2272 | #define NETDEV_DOWN 0x0002 | |
2273 | #define NETDEV_REBOOT 0x0003 /* Tell a protocol stack a network interface | |
2274 | detected a hardware crash and restarted | |
2275 | - we can use this eg to kick tcp sessions | |
2276 | once done */ | |
2277 | #define NETDEV_CHANGE 0x0004 /* Notify device state change */ | |
2278 | #define NETDEV_REGISTER 0x0005 | |
2279 | #define NETDEV_UNREGISTER 0x0006 | |
1d486bfb | 2280 | #define NETDEV_CHANGEMTU 0x0007 /* notify after mtu change happened */ |
dcfe1421 AW |
2281 | #define NETDEV_CHANGEADDR 0x0008 |
2282 | #define NETDEV_GOING_DOWN 0x0009 | |
2283 | #define NETDEV_CHANGENAME 0x000A | |
2284 | #define NETDEV_FEAT_CHANGE 0x000B | |
2285 | #define NETDEV_BONDING_FAILOVER 0x000C | |
2286 | #define NETDEV_PRE_UP 0x000D | |
2287 | #define NETDEV_PRE_TYPE_CHANGE 0x000E | |
2288 | #define NETDEV_POST_TYPE_CHANGE 0x000F | |
2289 | #define NETDEV_POST_INIT 0x0010 | |
0115e8e3 | 2290 | #define NETDEV_UNREGISTER_FINAL 0x0011 |
dcfe1421 AW |
2291 | #define NETDEV_RELEASE 0x0012 |
2292 | #define NETDEV_NOTIFY_PEERS 0x0013 | |
2293 | #define NETDEV_JOIN 0x0014 | |
42e52bf9 | 2294 | #define NETDEV_CHANGEUPPER 0x0015 |
4aa5dee4 | 2295 | #define NETDEV_RESEND_IGMP 0x0016 |
1d486bfb | 2296 | #define NETDEV_PRECHANGEMTU 0x0017 /* notify before mtu change happened */ |
d4261e56 | 2297 | #define NETDEV_CHANGEINFODATA 0x0018 |
61bd3857 | 2298 | #define NETDEV_BONDING_INFO 0x0019 |
573c7ba0 | 2299 | #define NETDEV_PRECHANGEUPPER 0x001A |
04d48266 | 2300 | #define NETDEV_CHANGELOWERSTATE 0x001B |
7c46a640 | 2301 | #define NETDEV_UDP_TUNNEL_PUSH_INFO 0x001C |
08294a26 | 2302 | #define NETDEV_CHANGE_TX_QUEUE_LEN 0x001E |
dcfe1421 | 2303 | |
f629d208 JP |
2304 | int register_netdevice_notifier(struct notifier_block *nb); |
2305 | int unregister_netdevice_notifier(struct notifier_block *nb); | |
351638e7 JP |
2306 | |
2307 | struct netdev_notifier_info { | |
2308 | struct net_device *dev; | |
2309 | }; | |
2310 | ||
be9efd36 JP |
2311 | struct netdev_notifier_change_info { |
2312 | struct netdev_notifier_info info; /* must be first */ | |
2313 | unsigned int flags_changed; | |
2314 | }; | |
2315 | ||
0e4ead9d JP |
2316 | struct netdev_notifier_changeupper_info { |
2317 | struct netdev_notifier_info info; /* must be first */ | |
2318 | struct net_device *upper_dev; /* new upper dev */ | |
2319 | bool master; /* is upper dev master */ | |
5e82b4b2 | 2320 | bool linking; /* is the notification for link or unlink */ |
29bf24af | 2321 | void *upper_info; /* upper dev info */ |
0e4ead9d JP |
2322 | }; |
2323 | ||
04d48266 JP |
2324 | struct netdev_notifier_changelowerstate_info { |
2325 | struct netdev_notifier_info info; /* must be first */ | |
2326 | void *lower_state_info; /* is lower dev state */ | |
2327 | }; | |
2328 | ||
75538c2b CW |
2329 | static inline void netdev_notifier_info_init(struct netdev_notifier_info *info, |
2330 | struct net_device *dev) | |
2331 | { | |
2332 | info->dev = dev; | |
2333 | } | |
2334 | ||
351638e7 JP |
2335 | static inline struct net_device * |
2336 | netdev_notifier_info_to_dev(const struct netdev_notifier_info *info) | |
2337 | { | |
2338 | return info->dev; | |
2339 | } | |
2340 | ||
f629d208 | 2341 | int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
dcfe1421 AW |
2342 | |
2343 | ||
1da177e4 LT |
2344 | extern rwlock_t dev_base_lock; /* Device list lock */ |
2345 | ||
881d966b EB |
2346 | #define for_each_netdev(net, d) \ |
2347 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
dcbccbd4 EB |
2348 | #define for_each_netdev_reverse(net, d) \ |
2349 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) | |
c6d14c84 ED |
2350 | #define for_each_netdev_rcu(net, d) \ |
2351 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b EB |
2352 | #define for_each_netdev_safe(net, d, n) \ |
2353 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
2354 | #define for_each_netdev_continue(net, d) \ | |
2355 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
254245d2 | 2356 | #define for_each_netdev_continue_rcu(net, d) \ |
2357 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) | |
8a7fbfab | 2358 | #define for_each_netdev_in_bond_rcu(bond, slave) \ |
2359 | for_each_netdev_rcu(&init_net, slave) \ | |
4ccce02e | 2360 | if (netdev_master_upper_dev_get_rcu(slave) == (bond)) |
881d966b | 2361 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
7562f876 | 2362 | |
a050c33f DL |
2363 | static inline struct net_device *next_net_device(struct net_device *dev) |
2364 | { | |
2365 | struct list_head *lh; | |
2366 | struct net *net; | |
2367 | ||
c346dca1 | 2368 | net = dev_net(dev); |
a050c33f DL |
2369 | lh = dev->dev_list.next; |
2370 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2371 | } | |
2372 | ||
ce81b76a ED |
2373 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
2374 | { | |
2375 | struct list_head *lh; | |
2376 | struct net *net; | |
2377 | ||
2378 | net = dev_net(dev); | |
ccf43438 | 2379 | lh = rcu_dereference(list_next_rcu(&dev->dev_list)); |
ce81b76a ED |
2380 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
2381 | } | |
2382 | ||
a050c33f DL |
2383 | static inline struct net_device *first_net_device(struct net *net) |
2384 | { | |
2385 | return list_empty(&net->dev_base_head) ? NULL : | |
2386 | net_device_entry(net->dev_base_head.next); | |
2387 | } | |
7562f876 | 2388 | |
ccf43438 ED |
2389 | static inline struct net_device *first_net_device_rcu(struct net *net) |
2390 | { | |
2391 | struct list_head *lh = rcu_dereference(list_next_rcu(&net->dev_base_head)); | |
2392 | ||
2393 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2394 | } | |
2395 | ||
f629d208 JP |
2396 | int netdev_boot_setup_check(struct net_device *dev); |
2397 | unsigned long netdev_boot_base(const char *prefix, int unit); | |
2398 | struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, | |
2399 | const char *hwaddr); | |
2400 | struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
2401 | struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
2402 | void dev_add_pack(struct packet_type *pt); | |
2403 | void dev_remove_pack(struct packet_type *pt); | |
2404 | void __dev_remove_pack(struct packet_type *pt); | |
2405 | void dev_add_offload(struct packet_offload *po); | |
2406 | void dev_remove_offload(struct packet_offload *po); | |
f629d208 | 2407 | |
a54acb3a | 2408 | int dev_get_iflink(const struct net_device *dev); |
fc4099f1 | 2409 | int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb); |
6c555490 WC |
2410 | struct net_device *__dev_get_by_flags(struct net *net, unsigned short flags, |
2411 | unsigned short mask); | |
f629d208 JP |
2412 | struct net_device *dev_get_by_name(struct net *net, const char *name); |
2413 | struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); | |
2414 | struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
2415 | int dev_alloc_name(struct net_device *dev, const char *name); | |
2416 | int dev_open(struct net_device *dev); | |
2417 | int dev_close(struct net_device *dev); | |
99c4a26a | 2418 | int dev_close_many(struct list_head *head, bool unlink); |
f629d208 | 2419 | void dev_disable_lro(struct net_device *dev); |
0c4b51f0 | 2420 | int dev_loopback_xmit(struct net *net, struct sock *sk, struct sk_buff *newskb); |
2b4aa3ce | 2421 | int dev_queue_xmit(struct sk_buff *skb); |
f663dd9a | 2422 | int dev_queue_xmit_accel(struct sk_buff *skb, void *accel_priv); |
f629d208 JP |
2423 | int register_netdevice(struct net_device *dev); |
2424 | void unregister_netdevice_queue(struct net_device *dev, struct list_head *head); | |
2425 | void unregister_netdevice_many(struct list_head *head); | |
44a0873d ED |
2426 | static inline void unregister_netdevice(struct net_device *dev) |
2427 | { | |
2428 | unregister_netdevice_queue(dev, NULL); | |
2429 | } | |
2430 | ||
f629d208 JP |
2431 | int netdev_refcnt_read(const struct net_device *dev); |
2432 | void free_netdev(struct net_device *dev); | |
74d332c1 | 2433 | void netdev_freemem(struct net_device *dev); |
f629d208 JP |
2434 | void synchronize_net(void); |
2435 | int init_dummy_netdev(struct net_device *dev); | |
937f1ba5 | 2436 | |
f60e5990 | 2437 | DECLARE_PER_CPU(int, xmit_recursion); |
a70b506e DB |
2438 | #define XMIT_RECURSION_LIMIT 10 |
2439 | ||
f60e5990 | 2440 | static inline int dev_recursion_level(void) |
2441 | { | |
2442 | return this_cpu_read(xmit_recursion); | |
2443 | } | |
2444 | ||
f629d208 JP |
2445 | struct net_device *dev_get_by_index(struct net *net, int ifindex); |
2446 | struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
2447 | struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); | |
2448 | int netdev_get_name(struct net *net, char *name, int ifindex); | |
2449 | int dev_restart(struct net_device *dev); | |
f629d208 | 2450 | int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb); |
86911732 HX |
2451 | |
2452 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) | |
2453 | { | |
2454 | return NAPI_GRO_CB(skb)->data_offset; | |
2455 | } | |
2456 | ||
2457 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) | |
2458 | { | |
2459 | return skb->len - NAPI_GRO_CB(skb)->data_offset; | |
2460 | } | |
2461 | ||
2462 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) | |
2463 | { | |
2464 | NAPI_GRO_CB(skb)->data_offset += len; | |
2465 | } | |
2466 | ||
a5b1cf28 HX |
2467 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
2468 | unsigned int offset) | |
86911732 | 2469 | { |
a5b1cf28 HX |
2470 | return NAPI_GRO_CB(skb)->frag0 + offset; |
2471 | } | |
78a478d0 | 2472 | |
a5b1cf28 HX |
2473 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
2474 | { | |
2475 | return NAPI_GRO_CB(skb)->frag0_len < hlen; | |
2476 | } | |
78a478d0 | 2477 | |
a5b1cf28 HX |
2478 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
2479 | unsigned int offset) | |
2480 | { | |
17dd759c HX |
2481 | if (!pskb_may_pull(skb, hlen)) |
2482 | return NULL; | |
2483 | ||
a5b1cf28 HX |
2484 | NAPI_GRO_CB(skb)->frag0 = NULL; |
2485 | NAPI_GRO_CB(skb)->frag0_len = 0; | |
17dd759c | 2486 | return skb->data + offset; |
86911732 | 2487 | } |
1da177e4 | 2488 | |
36e7b1b8 HX |
2489 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
2490 | { | |
78d3fd0b HX |
2491 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
2492 | skb_network_offset(skb); | |
36e7b1b8 HX |
2493 | } |
2494 | ||
bf5a755f JC |
2495 | static inline void skb_gro_postpull_rcsum(struct sk_buff *skb, |
2496 | const void *start, unsigned int len) | |
2497 | { | |
573e8fca | 2498 | if (NAPI_GRO_CB(skb)->csum_valid) |
bf5a755f JC |
2499 | NAPI_GRO_CB(skb)->csum = csum_sub(NAPI_GRO_CB(skb)->csum, |
2500 | csum_partial(start, len, 0)); | |
2501 | } | |
2502 | ||
573e8fca TH |
2503 | /* GRO checksum functions. These are logical equivalents of the normal |
2504 | * checksum functions (in skbuff.h) except that they operate on the GRO | |
2505 | * offsets and fields in sk_buff. | |
2506 | */ | |
2507 | ||
2508 | __sum16 __skb_gro_checksum_complete(struct sk_buff *skb); | |
2509 | ||
15e2396d TH |
2510 | static inline bool skb_at_gro_remcsum_start(struct sk_buff *skb) |
2511 | { | |
b7fe10e5 | 2512 | return (NAPI_GRO_CB(skb)->gro_remcsum_start == skb_gro_offset(skb)); |
15e2396d TH |
2513 | } |
2514 | ||
573e8fca TH |
2515 | static inline bool __skb_gro_checksum_validate_needed(struct sk_buff *skb, |
2516 | bool zero_okay, | |
2517 | __sum16 check) | |
2518 | { | |
6edec0e6 TH |
2519 | return ((skb->ip_summed != CHECKSUM_PARTIAL || |
2520 | skb_checksum_start_offset(skb) < | |
2521 | skb_gro_offset(skb)) && | |
15e2396d | 2522 | !skb_at_gro_remcsum_start(skb) && |
662880f4 | 2523 | NAPI_GRO_CB(skb)->csum_cnt == 0 && |
573e8fca TH |
2524 | (!zero_okay || check)); |
2525 | } | |
2526 | ||
2527 | static inline __sum16 __skb_gro_checksum_validate_complete(struct sk_buff *skb, | |
2528 | __wsum psum) | |
2529 | { | |
2530 | if (NAPI_GRO_CB(skb)->csum_valid && | |
2531 | !csum_fold(csum_add(psum, NAPI_GRO_CB(skb)->csum))) | |
2532 | return 0; | |
2533 | ||
2534 | NAPI_GRO_CB(skb)->csum = psum; | |
2535 | ||
2536 | return __skb_gro_checksum_complete(skb); | |
2537 | } | |
2538 | ||
573e8fca TH |
2539 | static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb) |
2540 | { | |
662880f4 TH |
2541 | if (NAPI_GRO_CB(skb)->csum_cnt > 0) { |
2542 | /* Consume a checksum from CHECKSUM_UNNECESSARY */ | |
2543 | NAPI_GRO_CB(skb)->csum_cnt--; | |
2544 | } else { | |
2545 | /* Update skb for CHECKSUM_UNNECESSARY and csum_level when we | |
2546 | * verified a new top level checksum or an encapsulated one | |
2547 | * during GRO. This saves work if we fallback to normal path. | |
2548 | */ | |
2549 | __skb_incr_checksum_unnecessary(skb); | |
573e8fca TH |
2550 | } |
2551 | } | |
2552 | ||
2553 | #define __skb_gro_checksum_validate(skb, proto, zero_okay, check, \ | |
2554 | compute_pseudo) \ | |
2555 | ({ \ | |
2556 | __sum16 __ret = 0; \ | |
2557 | if (__skb_gro_checksum_validate_needed(skb, zero_okay, check)) \ | |
2558 | __ret = __skb_gro_checksum_validate_complete(skb, \ | |
2559 | compute_pseudo(skb, proto)); \ | |
5a212329 TH |
2560 | if (__ret) \ |
2561 | __skb_mark_checksum_bad(skb); \ | |
2562 | else \ | |
573e8fca TH |
2563 | skb_gro_incr_csum_unnecessary(skb); \ |
2564 | __ret; \ | |
2565 | }) | |
2566 | ||
2567 | #define skb_gro_checksum_validate(skb, proto, compute_pseudo) \ | |
2568 | __skb_gro_checksum_validate(skb, proto, false, 0, compute_pseudo) | |
2569 | ||
2570 | #define skb_gro_checksum_validate_zero_check(skb, proto, check, \ | |
2571 | compute_pseudo) \ | |
2572 | __skb_gro_checksum_validate(skb, proto, true, check, compute_pseudo) | |
2573 | ||
2574 | #define skb_gro_checksum_simple_validate(skb) \ | |
2575 | __skb_gro_checksum_validate(skb, 0, false, 0, null_compute_pseudo) | |
2576 | ||
d96535a1 TH |
2577 | static inline bool __skb_gro_checksum_convert_check(struct sk_buff *skb) |
2578 | { | |
2579 | return (NAPI_GRO_CB(skb)->csum_cnt == 0 && | |
2580 | !NAPI_GRO_CB(skb)->csum_valid); | |
2581 | } | |
2582 | ||
2583 | static inline void __skb_gro_checksum_convert(struct sk_buff *skb, | |
2584 | __sum16 check, __wsum pseudo) | |
2585 | { | |
2586 | NAPI_GRO_CB(skb)->csum = ~pseudo; | |
2587 | NAPI_GRO_CB(skb)->csum_valid = 1; | |
2588 | } | |
2589 | ||
2590 | #define skb_gro_checksum_try_convert(skb, proto, check, compute_pseudo) \ | |
2591 | do { \ | |
2592 | if (__skb_gro_checksum_convert_check(skb)) \ | |
2593 | __skb_gro_checksum_convert(skb, check, \ | |
2594 | compute_pseudo(skb, proto)); \ | |
2595 | } while (0) | |
2596 | ||
26c4f7da TH |
2597 | struct gro_remcsum { |
2598 | int offset; | |
2599 | __wsum delta; | |
2600 | }; | |
2601 | ||
2602 | static inline void skb_gro_remcsum_init(struct gro_remcsum *grc) | |
2603 | { | |
846cd667 | 2604 | grc->offset = 0; |
26c4f7da TH |
2605 | grc->delta = 0; |
2606 | } | |
2607 | ||
b7fe10e5 TH |
2608 | static inline void *skb_gro_remcsum_process(struct sk_buff *skb, void *ptr, |
2609 | unsigned int off, size_t hdrlen, | |
2610 | int start, int offset, | |
2611 | struct gro_remcsum *grc, | |
2612 | bool nopartial) | |
dcdc8994 TH |
2613 | { |
2614 | __wsum delta; | |
b7fe10e5 | 2615 | size_t plen = hdrlen + max_t(size_t, offset + sizeof(u16), start); |
dcdc8994 TH |
2616 | |
2617 | BUG_ON(!NAPI_GRO_CB(skb)->csum_valid); | |
2618 | ||
15e2396d | 2619 | if (!nopartial) { |
b7fe10e5 TH |
2620 | NAPI_GRO_CB(skb)->gro_remcsum_start = off + hdrlen + start; |
2621 | return ptr; | |
2622 | } | |
2623 | ||
2624 | ptr = skb_gro_header_fast(skb, off); | |
2625 | if (skb_gro_header_hard(skb, off + plen)) { | |
2626 | ptr = skb_gro_header_slow(skb, off + plen, off); | |
2627 | if (!ptr) | |
2628 | return NULL; | |
15e2396d TH |
2629 | } |
2630 | ||
b7fe10e5 TH |
2631 | delta = remcsum_adjust(ptr + hdrlen, NAPI_GRO_CB(skb)->csum, |
2632 | start, offset); | |
dcdc8994 TH |
2633 | |
2634 | /* Adjust skb->csum since we changed the packet */ | |
dcdc8994 | 2635 | NAPI_GRO_CB(skb)->csum = csum_add(NAPI_GRO_CB(skb)->csum, delta); |
26c4f7da | 2636 | |
b7fe10e5 | 2637 | grc->offset = off + hdrlen + offset; |
26c4f7da | 2638 | grc->delta = delta; |
b7fe10e5 TH |
2639 | |
2640 | return ptr; | |
dcdc8994 TH |
2641 | } |
2642 | ||
26c4f7da TH |
2643 | static inline void skb_gro_remcsum_cleanup(struct sk_buff *skb, |
2644 | struct gro_remcsum *grc) | |
2645 | { | |
b7fe10e5 TH |
2646 | void *ptr; |
2647 | size_t plen = grc->offset + sizeof(u16); | |
2648 | ||
26c4f7da TH |
2649 | if (!grc->delta) |
2650 | return; | |
2651 | ||
b7fe10e5 TH |
2652 | ptr = skb_gro_header_fast(skb, grc->offset); |
2653 | if (skb_gro_header_hard(skb, grc->offset + sizeof(u16))) { | |
2654 | ptr = skb_gro_header_slow(skb, plen, grc->offset); | |
2655 | if (!ptr) | |
2656 | return; | |
2657 | } | |
2658 | ||
2659 | remcsum_unadjust((__sum16 *)ptr, grc->delta); | |
26c4f7da | 2660 | } |
dcdc8994 | 2661 | |
0c4e8581 SH |
2662 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
2663 | unsigned short type, | |
3b04ddde | 2664 | const void *daddr, const void *saddr, |
95c96174 | 2665 | unsigned int len) |
0c4e8581 | 2666 | { |
f1ecfd5d | 2667 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 2668 | return 0; |
3b04ddde SH |
2669 | |
2670 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
2671 | } |
2672 | ||
b95cce35 SH |
2673 | static inline int dev_parse_header(const struct sk_buff *skb, |
2674 | unsigned char *haddr) | |
2675 | { | |
2676 | const struct net_device *dev = skb->dev; | |
2677 | ||
1b83336b | 2678 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 2679 | return 0; |
3b04ddde | 2680 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
2681 | } |
2682 | ||
2793a23a WB |
2683 | /* ll_header must have at least hard_header_len allocated */ |
2684 | static inline bool dev_validate_header(const struct net_device *dev, | |
2685 | char *ll_header, int len) | |
2686 | { | |
2687 | if (likely(len >= dev->hard_header_len)) | |
2688 | return true; | |
2689 | ||
2690 | if (capable(CAP_SYS_RAWIO)) { | |
2691 | memset(ll_header + len, 0, dev->hard_header_len - len); | |
2692 | return true; | |
2693 | } | |
2694 | ||
2695 | if (dev->header_ops && dev->header_ops->validate) | |
2696 | return dev->header_ops->validate(ll_header, len); | |
2697 | ||
2698 | return false; | |
2699 | } | |
2700 | ||
1da177e4 | 2701 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
f629d208 | 2702 | int register_gifconf(unsigned int family, gifconf_func_t *gifconf); |
1da177e4 LT |
2703 | static inline int unregister_gifconf(unsigned int family) |
2704 | { | |
2705 | return register_gifconf(family, NULL); | |
2706 | } | |
2707 | ||
99bbc707 | 2708 | #ifdef CONFIG_NET_FLOW_LIMIT |
5f121b9a | 2709 | #define FLOW_LIMIT_HISTORY (1 << 7) /* must be ^2 and !overflow buckets */ |
99bbc707 WB |
2710 | struct sd_flow_limit { |
2711 | u64 count; | |
2712 | unsigned int num_buckets; | |
2713 | unsigned int history_head; | |
2714 | u16 history[FLOW_LIMIT_HISTORY]; | |
2715 | u8 buckets[]; | |
2716 | }; | |
2717 | ||
2718 | extern int netdev_flow_limit_table_len; | |
2719 | #endif /* CONFIG_NET_FLOW_LIMIT */ | |
2720 | ||
1da177e4 | 2721 | /* |
5e82b4b2 | 2722 | * Incoming packets are placed on per-CPU queues |
1da177e4 | 2723 | */ |
d94d9fee | 2724 | struct softnet_data { |
1da177e4 | 2725 | struct list_head poll_list; |
6e7676c1 | 2726 | struct sk_buff_head process_queue; |
1da177e4 | 2727 | |
dee42870 | 2728 | /* stats */ |
cd7b5396 DM |
2729 | unsigned int processed; |
2730 | unsigned int time_squeeze; | |
cd7b5396 | 2731 | unsigned int received_rps; |
fd793d89 | 2732 | #ifdef CONFIG_RPS |
88751275 | 2733 | struct softnet_data *rps_ipi_list; |
4cdb1e2e ED |
2734 | #endif |
2735 | #ifdef CONFIG_NET_FLOW_LIMIT | |
2736 | struct sd_flow_limit __rcu *flow_limit; | |
2737 | #endif | |
2738 | struct Qdisc *output_queue; | |
2739 | struct Qdisc **output_queue_tailp; | |
2740 | struct sk_buff *completion_queue; | |
88751275 | 2741 | |
4cdb1e2e | 2742 | #ifdef CONFIG_RPS |
501e7ef5 ED |
2743 | /* input_queue_head should be written by cpu owning this struct, |
2744 | * and only read by other cpus. Worth using a cache line. | |
2745 | */ | |
2746 | unsigned int input_queue_head ____cacheline_aligned_in_smp; | |
2747 | ||
2748 | /* Elements below can be accessed between CPUs for RPS/RFS */ | |
0a9627f2 | 2749 | struct call_single_data csd ____cacheline_aligned_in_smp; |
88751275 ED |
2750 | struct softnet_data *rps_ipi_next; |
2751 | unsigned int cpu; | |
76cc8b13 | 2752 | unsigned int input_queue_tail; |
1e94d72f | 2753 | #endif |
95c96174 | 2754 | unsigned int dropped; |
0a9627f2 | 2755 | struct sk_buff_head input_pkt_queue; |
bea3348e | 2756 | struct napi_struct backlog; |
99bbc707 | 2757 | |
1da177e4 LT |
2758 | }; |
2759 | ||
76cc8b13 | 2760 | static inline void input_queue_head_incr(struct softnet_data *sd) |
fec5e652 TH |
2761 | { |
2762 | #ifdef CONFIG_RPS | |
76cc8b13 TH |
2763 | sd->input_queue_head++; |
2764 | #endif | |
2765 | } | |
2766 | ||
2767 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, | |
2768 | unsigned int *qtail) | |
2769 | { | |
2770 | #ifdef CONFIG_RPS | |
2771 | *qtail = ++sd->input_queue_tail; | |
fec5e652 TH |
2772 | #endif |
2773 | } | |
2774 | ||
0a9627f2 | 2775 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
1da177e4 | 2776 | |
f629d208 | 2777 | void __netif_schedule(struct Qdisc *q); |
46e5da40 | 2778 | void netif_schedule_queue(struct netdev_queue *txq); |
86d804e1 | 2779 | |
fd2ea0a7 DM |
2780 | static inline void netif_tx_schedule_all(struct net_device *dev) |
2781 | { | |
2782 | unsigned int i; | |
2783 | ||
2784 | for (i = 0; i < dev->num_tx_queues; i++) | |
2785 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
2786 | } | |
2787 | ||
f9a7cbbf | 2788 | static __always_inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
d29f749e | 2789 | { |
73466498 | 2790 | clear_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
2791 | } |
2792 | ||
bea3348e SH |
2793 | /** |
2794 | * netif_start_queue - allow transmit | |
2795 | * @dev: network device | |
2796 | * | |
2797 | * Allow upper layers to call the device hard_start_xmit routine. | |
2798 | */ | |
1da177e4 LT |
2799 | static inline void netif_start_queue(struct net_device *dev) |
2800 | { | |
e8a0464c | 2801 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2802 | } |
2803 | ||
fd2ea0a7 DM |
2804 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
2805 | { | |
2806 | unsigned int i; | |
2807 | ||
2808 | for (i = 0; i < dev->num_tx_queues; i++) { | |
2809 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
2810 | netif_tx_start_queue(txq); | |
2811 | } | |
2812 | } | |
2813 | ||
46e5da40 | 2814 | void netif_tx_wake_queue(struct netdev_queue *dev_queue); |
79d16385 | 2815 | |
d29f749e DJ |
2816 | /** |
2817 | * netif_wake_queue - restart transmit | |
2818 | * @dev: network device | |
2819 | * | |
2820 | * Allow upper layers to call the device hard_start_xmit routine. | |
2821 | * Used for flow control when transmit resources are available. | |
2822 | */ | |
79d16385 DM |
2823 | static inline void netif_wake_queue(struct net_device *dev) |
2824 | { | |
e8a0464c | 2825 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2826 | } |
2827 | ||
fd2ea0a7 DM |
2828 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
2829 | { | |
2830 | unsigned int i; | |
2831 | ||
2832 | for (i = 0; i < dev->num_tx_queues; i++) { | |
2833 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
2834 | netif_tx_wake_queue(txq); | |
2835 | } | |
2836 | } | |
2837 | ||
f9a7cbbf | 2838 | static __always_inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
d29f749e | 2839 | { |
73466498 | 2840 | set_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
2841 | } |
2842 | ||
bea3348e SH |
2843 | /** |
2844 | * netif_stop_queue - stop transmitted packets | |
2845 | * @dev: network device | |
2846 | * | |
2847 | * Stop upper layers calling the device hard_start_xmit routine. | |
2848 | * Used for flow control when transmit resources are unavailable. | |
2849 | */ | |
1da177e4 LT |
2850 | static inline void netif_stop_queue(struct net_device *dev) |
2851 | { | |
e8a0464c | 2852 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2853 | } |
2854 | ||
a2029240 | 2855 | void netif_tx_stop_all_queues(struct net_device *dev); |
fd2ea0a7 | 2856 | |
4d29515f | 2857 | static inline bool netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
d29f749e | 2858 | { |
73466498 | 2859 | return test_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
2860 | } |
2861 | ||
bea3348e SH |
2862 | /** |
2863 | * netif_queue_stopped - test if transmit queue is flowblocked | |
2864 | * @dev: network device | |
2865 | * | |
2866 | * Test if transmit queue on device is currently unable to send. | |
2867 | */ | |
4d29515f | 2868 | static inline bool netif_queue_stopped(const struct net_device *dev) |
1da177e4 | 2869 | { |
e8a0464c | 2870 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2871 | } |
2872 | ||
4d29515f | 2873 | static inline bool netif_xmit_stopped(const struct netdev_queue *dev_queue) |
c3f26a26 | 2874 | { |
73466498 TH |
2875 | return dev_queue->state & QUEUE_STATE_ANY_XOFF; |
2876 | } | |
2877 | ||
8e2f1a63 DB |
2878 | static inline bool |
2879 | netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue) | |
73466498 TH |
2880 | { |
2881 | return dev_queue->state & QUEUE_STATE_ANY_XOFF_OR_FROZEN; | |
2882 | } | |
2883 | ||
8e2f1a63 DB |
2884 | static inline bool |
2885 | netif_xmit_frozen_or_drv_stopped(const struct netdev_queue *dev_queue) | |
2886 | { | |
2887 | return dev_queue->state & QUEUE_STATE_DRV_XOFF_OR_FROZEN; | |
2888 | } | |
2889 | ||
53511453 ED |
2890 | /** |
2891 | * netdev_txq_bql_enqueue_prefetchw - prefetch bql data for write | |
2892 | * @dev_queue: pointer to transmit queue | |
2893 | * | |
2894 | * BQL enabled drivers might use this helper in their ndo_start_xmit(), | |
5e82b4b2 | 2895 | * to give appropriate hint to the CPU. |
53511453 ED |
2896 | */ |
2897 | static inline void netdev_txq_bql_enqueue_prefetchw(struct netdev_queue *dev_queue) | |
2898 | { | |
2899 | #ifdef CONFIG_BQL | |
2900 | prefetchw(&dev_queue->dql.num_queued); | |
2901 | #endif | |
2902 | } | |
2903 | ||
2904 | /** | |
2905 | * netdev_txq_bql_complete_prefetchw - prefetch bql data for write | |
2906 | * @dev_queue: pointer to transmit queue | |
2907 | * | |
2908 | * BQL enabled drivers might use this helper in their TX completion path, | |
5e82b4b2 | 2909 | * to give appropriate hint to the CPU. |
53511453 ED |
2910 | */ |
2911 | static inline void netdev_txq_bql_complete_prefetchw(struct netdev_queue *dev_queue) | |
2912 | { | |
2913 | #ifdef CONFIG_BQL | |
2914 | prefetchw(&dev_queue->dql.limit); | |
2915 | #endif | |
2916 | } | |
2917 | ||
c5d67bd7 TH |
2918 | static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, |
2919 | unsigned int bytes) | |
2920 | { | |
114cf580 TH |
2921 | #ifdef CONFIG_BQL |
2922 | dql_queued(&dev_queue->dql, bytes); | |
b37c0fbe AD |
2923 | |
2924 | if (likely(dql_avail(&dev_queue->dql) >= 0)) | |
2925 | return; | |
2926 | ||
2927 | set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
2928 | ||
2929 | /* | |
2930 | * The XOFF flag must be set before checking the dql_avail below, | |
2931 | * because in netdev_tx_completed_queue we update the dql_completed | |
2932 | * before checking the XOFF flag. | |
2933 | */ | |
2934 | smp_mb(); | |
2935 | ||
2936 | /* check again in case another CPU has just made room avail */ | |
2937 | if (unlikely(dql_avail(&dev_queue->dql) >= 0)) | |
2938 | clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
114cf580 | 2939 | #endif |
c5d67bd7 TH |
2940 | } |
2941 | ||
0042d0c8 FF |
2942 | /** |
2943 | * netdev_sent_queue - report the number of bytes queued to hardware | |
2944 | * @dev: network device | |
2945 | * @bytes: number of bytes queued to the hardware device queue | |
2946 | * | |
2947 | * Report the number of bytes queued for sending/completion to the network | |
2948 | * device hardware queue. @bytes should be a good approximation and should | |
2949 | * exactly match netdev_completed_queue() @bytes | |
2950 | */ | |
c5d67bd7 TH |
2951 | static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes) |
2952 | { | |
2953 | netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes); | |
2954 | } | |
2955 | ||
2956 | static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue, | |
95c96174 | 2957 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 | 2958 | { |
114cf580 | 2959 | #ifdef CONFIG_BQL |
b37c0fbe AD |
2960 | if (unlikely(!bytes)) |
2961 | return; | |
2962 | ||
2963 | dql_completed(&dev_queue->dql, bytes); | |
2964 | ||
2965 | /* | |
2966 | * Without the memory barrier there is a small possiblity that | |
2967 | * netdev_tx_sent_queue will miss the update and cause the queue to | |
2968 | * be stopped forever | |
2969 | */ | |
2970 | smp_mb(); | |
2971 | ||
2972 | if (dql_avail(&dev_queue->dql) < 0) | |
2973 | return; | |
2974 | ||
2975 | if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state)) | |
2976 | netif_schedule_queue(dev_queue); | |
114cf580 | 2977 | #endif |
c5d67bd7 TH |
2978 | } |
2979 | ||
0042d0c8 FF |
2980 | /** |
2981 | * netdev_completed_queue - report bytes and packets completed by device | |
2982 | * @dev: network device | |
2983 | * @pkts: actual number of packets sent over the medium | |
2984 | * @bytes: actual number of bytes sent over the medium | |
2985 | * | |
2986 | * Report the number of bytes and packets transmitted by the network device | |
2987 | * hardware queue over the physical medium, @bytes must exactly match the | |
2988 | * @bytes amount passed to netdev_sent_queue() | |
2989 | */ | |
c5d67bd7 | 2990 | static inline void netdev_completed_queue(struct net_device *dev, |
95c96174 | 2991 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 TH |
2992 | { |
2993 | netdev_tx_completed_queue(netdev_get_tx_queue(dev, 0), pkts, bytes); | |
2994 | } | |
2995 | ||
2996 | static inline void netdev_tx_reset_queue(struct netdev_queue *q) | |
2997 | { | |
114cf580 | 2998 | #ifdef CONFIG_BQL |
5c490354 | 2999 | clear_bit(__QUEUE_STATE_STACK_XOFF, &q->state); |
114cf580 TH |
3000 | dql_reset(&q->dql); |
3001 | #endif | |
c5d67bd7 TH |
3002 | } |
3003 | ||
0042d0c8 FF |
3004 | /** |
3005 | * netdev_reset_queue - reset the packets and bytes count of a network device | |
3006 | * @dev_queue: network device | |
3007 | * | |
3008 | * Reset the bytes and packet count of a network device and clear the | |
3009 | * software flow control OFF bit for this network device | |
3010 | */ | |
c5d67bd7 TH |
3011 | static inline void netdev_reset_queue(struct net_device *dev_queue) |
3012 | { | |
3013 | netdev_tx_reset_queue(netdev_get_tx_queue(dev_queue, 0)); | |
c3f26a26 DM |
3014 | } |
3015 | ||
b9507bda DB |
3016 | /** |
3017 | * netdev_cap_txqueue - check if selected tx queue exceeds device queues | |
3018 | * @dev: network device | |
3019 | * @queue_index: given tx queue index | |
3020 | * | |
3021 | * Returns 0 if given tx queue index >= number of device tx queues, | |
3022 | * otherwise returns the originally passed tx queue index. | |
3023 | */ | |
3024 | static inline u16 netdev_cap_txqueue(struct net_device *dev, u16 queue_index) | |
3025 | { | |
3026 | if (unlikely(queue_index >= dev->real_num_tx_queues)) { | |
3027 | net_warn_ratelimited("%s selects TX queue %d, but real number of TX queues is %d\n", | |
3028 | dev->name, queue_index, | |
3029 | dev->real_num_tx_queues); | |
3030 | return 0; | |
3031 | } | |
3032 | ||
3033 | return queue_index; | |
3034 | } | |
3035 | ||
bea3348e SH |
3036 | /** |
3037 | * netif_running - test if up | |
3038 | * @dev: network device | |
3039 | * | |
3040 | * Test if the device has been brought up. | |
3041 | */ | |
4d29515f | 3042 | static inline bool netif_running(const struct net_device *dev) |
1da177e4 LT |
3043 | { |
3044 | return test_bit(__LINK_STATE_START, &dev->state); | |
3045 | } | |
3046 | ||
f25f4e44 | 3047 | /* |
5e82b4b2 | 3048 | * Routines to manage the subqueues on a device. We only need start, |
f25f4e44 PWJ |
3049 | * stop, and a check if it's stopped. All other device management is |
3050 | * done at the overall netdevice level. | |
3051 | * Also test the device if we're multiqueue. | |
3052 | */ | |
bea3348e SH |
3053 | |
3054 | /** | |
3055 | * netif_start_subqueue - allow sending packets on subqueue | |
3056 | * @dev: network device | |
3057 | * @queue_index: sub queue index | |
3058 | * | |
3059 | * Start individual transmit queue of a device with multiple transmit queues. | |
3060 | */ | |
f25f4e44 PWJ |
3061 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
3062 | { | |
fd2ea0a7 | 3063 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3064 | |
3065 | netif_tx_start_queue(txq); | |
f25f4e44 PWJ |
3066 | } |
3067 | ||
bea3348e SH |
3068 | /** |
3069 | * netif_stop_subqueue - stop sending packets on subqueue | |
3070 | * @dev: network device | |
3071 | * @queue_index: sub queue index | |
3072 | * | |
3073 | * Stop individual transmit queue of a device with multiple transmit queues. | |
3074 | */ | |
f25f4e44 PWJ |
3075 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
3076 | { | |
fd2ea0a7 | 3077 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f | 3078 | netif_tx_stop_queue(txq); |
f25f4e44 PWJ |
3079 | } |
3080 | ||
bea3348e SH |
3081 | /** |
3082 | * netif_subqueue_stopped - test status of subqueue | |
3083 | * @dev: network device | |
3084 | * @queue_index: sub queue index | |
3085 | * | |
3086 | * Check individual transmit queue of a device with multiple transmit queues. | |
3087 | */ | |
4d29515f DM |
3088 | static inline bool __netif_subqueue_stopped(const struct net_device *dev, |
3089 | u16 queue_index) | |
f25f4e44 | 3090 | { |
fd2ea0a7 | 3091 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3092 | |
3093 | return netif_tx_queue_stopped(txq); | |
f25f4e44 PWJ |
3094 | } |
3095 | ||
4d29515f DM |
3096 | static inline bool netif_subqueue_stopped(const struct net_device *dev, |
3097 | struct sk_buff *skb) | |
668f895a PE |
3098 | { |
3099 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
3100 | } | |
bea3348e | 3101 | |
46e5da40 | 3102 | void netif_wake_subqueue(struct net_device *dev, u16 queue_index); |
f25f4e44 | 3103 | |
537c00de | 3104 | #ifdef CONFIG_XPS |
53af53ae | 3105 | int netif_set_xps_queue(struct net_device *dev, const struct cpumask *mask, |
f629d208 | 3106 | u16 index); |
537c00de AD |
3107 | #else |
3108 | static inline int netif_set_xps_queue(struct net_device *dev, | |
3573540c | 3109 | const struct cpumask *mask, |
537c00de AD |
3110 | u16 index) |
3111 | { | |
3112 | return 0; | |
3113 | } | |
3114 | #endif | |
3115 | ||
5605c762 JP |
3116 | u16 __skb_tx_hash(const struct net_device *dev, struct sk_buff *skb, |
3117 | unsigned int num_tx_queues); | |
3118 | ||
a3d22a68 VZ |
3119 | /* |
3120 | * Returns a Tx hash for the given packet when dev->real_num_tx_queues is used | |
3121 | * as a distribution range limit for the returned value. | |
3122 | */ | |
3123 | static inline u16 skb_tx_hash(const struct net_device *dev, | |
0e001614 | 3124 | struct sk_buff *skb) |
a3d22a68 VZ |
3125 | { |
3126 | return __skb_tx_hash(dev, skb, dev->real_num_tx_queues); | |
3127 | } | |
3128 | ||
bea3348e SH |
3129 | /** |
3130 | * netif_is_multiqueue - test if device has multiple transmit queues | |
3131 | * @dev: network device | |
3132 | * | |
3133 | * Check if device has multiple transmit queues | |
bea3348e | 3134 | */ |
4d29515f | 3135 | static inline bool netif_is_multiqueue(const struct net_device *dev) |
f25f4e44 | 3136 | { |
a02cec21 | 3137 | return dev->num_tx_queues > 1; |
f25f4e44 | 3138 | } |
1da177e4 | 3139 | |
f629d208 | 3140 | int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq); |
f0796d5c | 3141 | |
a953be53 | 3142 | #ifdef CONFIG_SYSFS |
f629d208 | 3143 | int netif_set_real_num_rx_queues(struct net_device *dev, unsigned int rxq); |
62fe0b40 BH |
3144 | #else |
3145 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, | |
3146 | unsigned int rxq) | |
3147 | { | |
3148 | return 0; | |
3149 | } | |
3150 | #endif | |
3151 | ||
a953be53 MD |
3152 | #ifdef CONFIG_SYSFS |
3153 | static inline unsigned int get_netdev_rx_queue_index( | |
3154 | struct netdev_rx_queue *queue) | |
3155 | { | |
3156 | struct net_device *dev = queue->dev; | |
3157 | int index = queue - dev->_rx; | |
3158 | ||
3159 | BUG_ON(index >= dev->num_rx_queues); | |
3160 | return index; | |
3161 | } | |
3162 | #endif | |
3163 | ||
16917b87 | 3164 | #define DEFAULT_MAX_NUM_RSS_QUEUES (8) |
f629d208 | 3165 | int netif_get_num_default_rss_queues(void); |
16917b87 | 3166 | |
e6247027 ED |
3167 | enum skb_free_reason { |
3168 | SKB_REASON_CONSUMED, | |
3169 | SKB_REASON_DROPPED, | |
3170 | }; | |
3171 | ||
3172 | void __dev_kfree_skb_irq(struct sk_buff *skb, enum skb_free_reason reason); | |
3173 | void __dev_kfree_skb_any(struct sk_buff *skb, enum skb_free_reason reason); | |
1da177e4 | 3174 | |
e6247027 ED |
3175 | /* |
3176 | * It is not allowed to call kfree_skb() or consume_skb() from hardware | |
3177 | * interrupt context or with hardware interrupts being disabled. | |
3178 | * (in_irq() || irqs_disabled()) | |
3179 | * | |
3180 | * We provide four helpers that can be used in following contexts : | |
3181 | * | |
3182 | * dev_kfree_skb_irq(skb) when caller drops a packet from irq context, | |
3183 | * replacing kfree_skb(skb) | |
3184 | * | |
3185 | * dev_consume_skb_irq(skb) when caller consumes a packet from irq context. | |
3186 | * Typically used in place of consume_skb(skb) in TX completion path | |
3187 | * | |
3188 | * dev_kfree_skb_any(skb) when caller doesn't know its current irq context, | |
3189 | * replacing kfree_skb(skb) | |
3190 | * | |
3191 | * dev_consume_skb_any(skb) when caller doesn't know its current irq context, | |
3192 | * and consumed a packet. Used in place of consume_skb(skb) | |
1da177e4 | 3193 | */ |
e6247027 ED |
3194 | static inline void dev_kfree_skb_irq(struct sk_buff *skb) |
3195 | { | |
3196 | __dev_kfree_skb_irq(skb, SKB_REASON_DROPPED); | |
3197 | } | |
3198 | ||
3199 | static inline void dev_consume_skb_irq(struct sk_buff *skb) | |
3200 | { | |
3201 | __dev_kfree_skb_irq(skb, SKB_REASON_CONSUMED); | |
3202 | } | |
3203 | ||
3204 | static inline void dev_kfree_skb_any(struct sk_buff *skb) | |
3205 | { | |
3206 | __dev_kfree_skb_any(skb, SKB_REASON_DROPPED); | |
3207 | } | |
3208 | ||
3209 | static inline void dev_consume_skb_any(struct sk_buff *skb) | |
3210 | { | |
3211 | __dev_kfree_skb_any(skb, SKB_REASON_CONSUMED); | |
3212 | } | |
1da177e4 | 3213 | |
f629d208 JP |
3214 | int netif_rx(struct sk_buff *skb); |
3215 | int netif_rx_ni(struct sk_buff *skb); | |
04eb4489 | 3216 | int netif_receive_skb(struct sk_buff *skb); |
f629d208 JP |
3217 | gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb); |
3218 | void napi_gro_flush(struct napi_struct *napi, bool flush_old); | |
3219 | struct sk_buff *napi_get_frags(struct napi_struct *napi); | |
3220 | gro_result_t napi_gro_frags(struct napi_struct *napi); | |
bf5a755f JC |
3221 | struct packet_offload *gro_find_receive_by_type(__be16 type); |
3222 | struct packet_offload *gro_find_complete_by_type(__be16 type); | |
76620aaf HX |
3223 | |
3224 | static inline void napi_free_frags(struct napi_struct *napi) | |
3225 | { | |
3226 | kfree_skb(napi->skb); | |
3227 | napi->skb = NULL; | |
3228 | } | |
3229 | ||
24b27fc4 | 3230 | bool netdev_is_rx_handler_busy(struct net_device *dev); |
f629d208 JP |
3231 | int netdev_rx_handler_register(struct net_device *dev, |
3232 | rx_handler_func_t *rx_handler, | |
3233 | void *rx_handler_data); | |
3234 | void netdev_rx_handler_unregister(struct net_device *dev); | |
3235 | ||
3236 | bool dev_valid_name(const char *name); | |
3237 | int dev_ioctl(struct net *net, unsigned int cmd, void __user *); | |
3238 | int dev_ethtool(struct net *net, struct ifreq *); | |
3239 | unsigned int dev_get_flags(const struct net_device *); | |
3240 | int __dev_change_flags(struct net_device *, unsigned int flags); | |
3241 | int dev_change_flags(struct net_device *, unsigned int); | |
cb178190 DM |
3242 | void __dev_notify_flags(struct net_device *, unsigned int old_flags, |
3243 | unsigned int gchanges); | |
f629d208 JP |
3244 | int dev_change_name(struct net_device *, const char *); |
3245 | int dev_set_alias(struct net_device *, const char *, size_t); | |
3246 | int dev_change_net_namespace(struct net_device *, struct net *, const char *); | |
3247 | int dev_set_mtu(struct net_device *, int); | |
3248 | void dev_set_group(struct net_device *, int); | |
3249 | int dev_set_mac_address(struct net_device *, struct sockaddr *); | |
3250 | int dev_change_carrier(struct net_device *, bool new_carrier); | |
3251 | int dev_get_phys_port_id(struct net_device *dev, | |
02637fce | 3252 | struct netdev_phys_item_id *ppid); |
db24a904 DA |
3253 | int dev_get_phys_port_name(struct net_device *dev, |
3254 | char *name, size_t len); | |
d746d707 | 3255 | int dev_change_proto_down(struct net_device *dev, bool proto_down); |
85de8576 | 3256 | int dev_change_xdp_fd(struct net_device *dev, int fd, u32 flags); |
55a93b3e | 3257 | struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev); |
ce93718f DM |
3258 | struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, |
3259 | struct netdev_queue *txq, int *ret); | |
a0265d28 | 3260 | int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
f629d208 | 3261 | int dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
f4b05d27 NA |
3262 | bool is_skb_forwardable(const struct net_device *dev, |
3263 | const struct sk_buff *skb); | |
1da177e4 | 3264 | |
4e3264d2 MKL |
3265 | static __always_inline int ____dev_forward_skb(struct net_device *dev, |
3266 | struct sk_buff *skb) | |
3267 | { | |
3268 | if (skb_orphan_frags(skb, GFP_ATOMIC) || | |
3269 | unlikely(!is_skb_forwardable(dev, skb))) { | |
3270 | atomic_long_inc(&dev->rx_dropped); | |
3271 | kfree_skb(skb); | |
3272 | return NET_RX_DROP; | |
3273 | } | |
3274 | ||
3275 | skb_scrub_packet(skb, true); | |
3276 | skb->priority = 0; | |
3277 | return 0; | |
3278 | } | |
3279 | ||
74b20582 DA |
3280 | void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev); |
3281 | ||
20380731 | 3282 | extern int netdev_budget; |
1da177e4 LT |
3283 | |
3284 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
f629d208 | 3285 | void netdev_run_todo(void); |
1da177e4 | 3286 | |
bea3348e SH |
3287 | /** |
3288 | * dev_put - release reference to device | |
3289 | * @dev: network device | |
3290 | * | |
9ef4429b | 3291 | * Release reference to device to allow it to be freed. |
bea3348e | 3292 | */ |
1da177e4 LT |
3293 | static inline void dev_put(struct net_device *dev) |
3294 | { | |
933393f5 | 3295 | this_cpu_dec(*dev->pcpu_refcnt); |
1da177e4 LT |
3296 | } |
3297 | ||
bea3348e SH |
3298 | /** |
3299 | * dev_hold - get reference to device | |
3300 | * @dev: network device | |
3301 | * | |
9ef4429b | 3302 | * Hold reference to device to keep it from being freed. |
bea3348e | 3303 | */ |
15333061 SH |
3304 | static inline void dev_hold(struct net_device *dev) |
3305 | { | |
933393f5 | 3306 | this_cpu_inc(*dev->pcpu_refcnt); |
15333061 | 3307 | } |
1da177e4 LT |
3308 | |
3309 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
3310 | * and _off may be called from IRQ context, but it is caller | |
3311 | * who is responsible for serialization of these calls. | |
b00055aa SR |
3312 | * |
3313 | * The name carrier is inappropriate, these functions should really be | |
3314 | * called netif_lowerlayer_*() because they represent the state of any | |
3315 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
3316 | */ |
3317 | ||
f629d208 JP |
3318 | void linkwatch_init_dev(struct net_device *dev); |
3319 | void linkwatch_fire_event(struct net_device *dev); | |
3320 | void linkwatch_forget_dev(struct net_device *dev); | |
1da177e4 | 3321 | |
bea3348e SH |
3322 | /** |
3323 | * netif_carrier_ok - test if carrier present | |
3324 | * @dev: network device | |
3325 | * | |
3326 | * Check if carrier is present on device | |
3327 | */ | |
4d29515f | 3328 | static inline bool netif_carrier_ok(const struct net_device *dev) |
1da177e4 LT |
3329 | { |
3330 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
3331 | } | |
3332 | ||
f629d208 | 3333 | unsigned long dev_trans_start(struct net_device *dev); |
9d21493b | 3334 | |
f629d208 | 3335 | void __netdev_watchdog_up(struct net_device *dev); |
1da177e4 | 3336 | |
f629d208 | 3337 | void netif_carrier_on(struct net_device *dev); |
1da177e4 | 3338 | |
f629d208 | 3339 | void netif_carrier_off(struct net_device *dev); |
1da177e4 | 3340 | |
bea3348e SH |
3341 | /** |
3342 | * netif_dormant_on - mark device as dormant. | |
3343 | * @dev: network device | |
3344 | * | |
3345 | * Mark device as dormant (as per RFC2863). | |
3346 | * | |
3347 | * The dormant state indicates that the relevant interface is not | |
3348 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
3349 | * in a "pending" state, waiting for some external event. For "on- | |
3350 | * demand" interfaces, this new state identifies the situation where the | |
3351 | * interface is waiting for events to place it in the up state. | |
bea3348e | 3352 | */ |
b00055aa SR |
3353 | static inline void netif_dormant_on(struct net_device *dev) |
3354 | { | |
3355 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
3356 | linkwatch_fire_event(dev); | |
3357 | } | |
3358 | ||
bea3348e SH |
3359 | /** |
3360 | * netif_dormant_off - set device as not dormant. | |
3361 | * @dev: network device | |
3362 | * | |
3363 | * Device is not in dormant state. | |
3364 | */ | |
b00055aa SR |
3365 | static inline void netif_dormant_off(struct net_device *dev) |
3366 | { | |
3367 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
3368 | linkwatch_fire_event(dev); | |
3369 | } | |
3370 | ||
bea3348e SH |
3371 | /** |
3372 | * netif_dormant - test if carrier present | |
3373 | * @dev: network device | |
3374 | * | |
3375 | * Check if carrier is present on device | |
3376 | */ | |
4d29515f | 3377 | static inline bool netif_dormant(const struct net_device *dev) |
b00055aa SR |
3378 | { |
3379 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
3380 | } | |
3381 | ||
3382 | ||
bea3348e SH |
3383 | /** |
3384 | * netif_oper_up - test if device is operational | |
3385 | * @dev: network device | |
3386 | * | |
3387 | * Check if carrier is operational | |
3388 | */ | |
4d29515f | 3389 | static inline bool netif_oper_up(const struct net_device *dev) |
d94d9fee | 3390 | { |
b00055aa SR |
3391 | return (dev->operstate == IF_OPER_UP || |
3392 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
3393 | } | |
3394 | ||
bea3348e SH |
3395 | /** |
3396 | * netif_device_present - is device available or removed | |
3397 | * @dev: network device | |
3398 | * | |
3399 | * Check if device has not been removed from system. | |
3400 | */ | |
4d29515f | 3401 | static inline bool netif_device_present(struct net_device *dev) |
1da177e4 LT |
3402 | { |
3403 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
3404 | } | |
3405 | ||
f629d208 | 3406 | void netif_device_detach(struct net_device *dev); |
1da177e4 | 3407 | |
f629d208 | 3408 | void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
3409 | |
3410 | /* | |
3411 | * Network interface message level settings | |
3412 | */ | |
1da177e4 LT |
3413 | |
3414 | enum { | |
3415 | NETIF_MSG_DRV = 0x0001, | |
3416 | NETIF_MSG_PROBE = 0x0002, | |
3417 | NETIF_MSG_LINK = 0x0004, | |
3418 | NETIF_MSG_TIMER = 0x0008, | |
3419 | NETIF_MSG_IFDOWN = 0x0010, | |
3420 | NETIF_MSG_IFUP = 0x0020, | |
3421 | NETIF_MSG_RX_ERR = 0x0040, | |
3422 | NETIF_MSG_TX_ERR = 0x0080, | |
3423 | NETIF_MSG_TX_QUEUED = 0x0100, | |
3424 | NETIF_MSG_INTR = 0x0200, | |
3425 | NETIF_MSG_TX_DONE = 0x0400, | |
3426 | NETIF_MSG_RX_STATUS = 0x0800, | |
3427 | NETIF_MSG_PKTDATA = 0x1000, | |
3428 | NETIF_MSG_HW = 0x2000, | |
3429 | NETIF_MSG_WOL = 0x4000, | |
3430 | }; | |
3431 | ||
3432 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
3433 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
3434 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
3435 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
3436 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
3437 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
3438 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
3439 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
3440 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
3441 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
3442 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
3443 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
3444 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
3445 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
3446 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
3447 | ||
3448 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
3449 | { | |
3450 | /* use default */ | |
3451 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
3452 | return default_msg_enable_bits; | |
3453 | if (debug_value == 0) /* no output */ | |
3454 | return 0; | |
3455 | /* set low N bits */ | |
3456 | return (1 << debug_value) - 1; | |
3457 | } | |
3458 | ||
c773e847 | 3459 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 3460 | { |
c773e847 DM |
3461 | spin_lock(&txq->_xmit_lock); |
3462 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
3463 | } |
3464 | ||
5a717f4f MT |
3465 | static inline bool __netif_tx_acquire(struct netdev_queue *txq) |
3466 | { | |
3467 | __acquire(&txq->_xmit_lock); | |
3468 | return true; | |
3469 | } | |
3470 | ||
3471 | static inline void __netif_tx_release(struct netdev_queue *txq) | |
3472 | { | |
3473 | __release(&txq->_xmit_lock); | |
3474 | } | |
3475 | ||
fd2ea0a7 DM |
3476 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
3477 | { | |
3478 | spin_lock_bh(&txq->_xmit_lock); | |
3479 | txq->xmit_lock_owner = smp_processor_id(); | |
3480 | } | |
3481 | ||
4d29515f | 3482 | static inline bool __netif_tx_trylock(struct netdev_queue *txq) |
c3f26a26 | 3483 | { |
4d29515f | 3484 | bool ok = spin_trylock(&txq->_xmit_lock); |
c3f26a26 DM |
3485 | if (likely(ok)) |
3486 | txq->xmit_lock_owner = smp_processor_id(); | |
3487 | return ok; | |
3488 | } | |
3489 | ||
3490 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
3491 | { | |
3492 | txq->xmit_lock_owner = -1; | |
3493 | spin_unlock(&txq->_xmit_lock); | |
3494 | } | |
3495 | ||
3496 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
3497 | { | |
3498 | txq->xmit_lock_owner = -1; | |
3499 | spin_unlock_bh(&txq->_xmit_lock); | |
3500 | } | |
3501 | ||
08baf561 ED |
3502 | static inline void txq_trans_update(struct netdev_queue *txq) |
3503 | { | |
3504 | if (txq->xmit_lock_owner != -1) | |
3505 | txq->trans_start = jiffies; | |
3506 | } | |
3507 | ||
ba162f8e FW |
3508 | /* legacy drivers only, netdev_start_xmit() sets txq->trans_start */ |
3509 | static inline void netif_trans_update(struct net_device *dev) | |
3510 | { | |
9b36627a FW |
3511 | struct netdev_queue *txq = netdev_get_tx_queue(dev, 0); |
3512 | ||
3513 | if (txq->trans_start != jiffies) | |
3514 | txq->trans_start = jiffies; | |
ba162f8e FW |
3515 | } |
3516 | ||
d29f749e DJ |
3517 | /** |
3518 | * netif_tx_lock - grab network device transmit lock | |
3519 | * @dev: network device | |
d29f749e DJ |
3520 | * |
3521 | * Get network device transmit lock | |
3522 | */ | |
22dd7495 JHS |
3523 | static inline void netif_tx_lock(struct net_device *dev) |
3524 | { | |
e8a0464c | 3525 | unsigned int i; |
c3f26a26 | 3526 | int cpu; |
c773e847 | 3527 | |
c3f26a26 DM |
3528 | spin_lock(&dev->tx_global_lock); |
3529 | cpu = smp_processor_id(); | |
e8a0464c DM |
3530 | for (i = 0; i < dev->num_tx_queues; i++) { |
3531 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
3532 | |
3533 | /* We are the only thread of execution doing a | |
3534 | * freeze, but we have to grab the _xmit_lock in | |
3535 | * order to synchronize with threads which are in | |
3536 | * the ->hard_start_xmit() handler and already | |
3537 | * checked the frozen bit. | |
3538 | */ | |
e8a0464c | 3539 | __netif_tx_lock(txq, cpu); |
c3f26a26 DM |
3540 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
3541 | __netif_tx_unlock(txq); | |
e8a0464c | 3542 | } |
932ff279 HX |
3543 | } |
3544 | ||
3545 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
3546 | { | |
e8a0464c DM |
3547 | local_bh_disable(); |
3548 | netif_tx_lock(dev); | |
932ff279 HX |
3549 | } |
3550 | ||
932ff279 HX |
3551 | static inline void netif_tx_unlock(struct net_device *dev) |
3552 | { | |
e8a0464c DM |
3553 | unsigned int i; |
3554 | ||
3555 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3556 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c773e847 | 3557 | |
c3f26a26 DM |
3558 | /* No need to grab the _xmit_lock here. If the |
3559 | * queue is not stopped for another reason, we | |
3560 | * force a schedule. | |
3561 | */ | |
3562 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
7b3d3e4f | 3563 | netif_schedule_queue(txq); |
c3f26a26 DM |
3564 | } |
3565 | spin_unlock(&dev->tx_global_lock); | |
932ff279 HX |
3566 | } |
3567 | ||
3568 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
3569 | { | |
e8a0464c DM |
3570 | netif_tx_unlock(dev); |
3571 | local_bh_enable(); | |
932ff279 HX |
3572 | } |
3573 | ||
c773e847 | 3574 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 3575 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 3576 | __netif_tx_lock(txq, cpu); \ |
5a717f4f MT |
3577 | } else { \ |
3578 | __netif_tx_acquire(txq); \ | |
22dd7495 JHS |
3579 | } \ |
3580 | } | |
3581 | ||
5efeac44 EB |
3582 | #define HARD_TX_TRYLOCK(dev, txq) \ |
3583 | (((dev->features & NETIF_F_LLTX) == 0) ? \ | |
3584 | __netif_tx_trylock(txq) : \ | |
5a717f4f | 3585 | __netif_tx_acquire(txq)) |
5efeac44 | 3586 | |
c773e847 | 3587 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 3588 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 3589 | __netif_tx_unlock(txq); \ |
5a717f4f MT |
3590 | } else { \ |
3591 | __netif_tx_release(txq); \ | |
22dd7495 JHS |
3592 | } \ |
3593 | } | |
3594 | ||
1da177e4 LT |
3595 | static inline void netif_tx_disable(struct net_device *dev) |
3596 | { | |
fd2ea0a7 | 3597 | unsigned int i; |
c3f26a26 | 3598 | int cpu; |
fd2ea0a7 | 3599 | |
c3f26a26 DM |
3600 | local_bh_disable(); |
3601 | cpu = smp_processor_id(); | |
fd2ea0a7 DM |
3602 | for (i = 0; i < dev->num_tx_queues; i++) { |
3603 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
3604 | |
3605 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 3606 | netif_tx_stop_queue(txq); |
c3f26a26 | 3607 | __netif_tx_unlock(txq); |
fd2ea0a7 | 3608 | } |
c3f26a26 | 3609 | local_bh_enable(); |
1da177e4 LT |
3610 | } |
3611 | ||
e308a5d8 DM |
3612 | static inline void netif_addr_lock(struct net_device *dev) |
3613 | { | |
3614 | spin_lock(&dev->addr_list_lock); | |
3615 | } | |
3616 | ||
2429f7ac JP |
3617 | static inline void netif_addr_lock_nested(struct net_device *dev) |
3618 | { | |
25175ba5 VY |
3619 | int subclass = SINGLE_DEPTH_NESTING; |
3620 | ||
3621 | if (dev->netdev_ops->ndo_get_lock_subclass) | |
3622 | subclass = dev->netdev_ops->ndo_get_lock_subclass(dev); | |
3623 | ||
3624 | spin_lock_nested(&dev->addr_list_lock, subclass); | |
2429f7ac JP |
3625 | } |
3626 | ||
e308a5d8 DM |
3627 | static inline void netif_addr_lock_bh(struct net_device *dev) |
3628 | { | |
3629 | spin_lock_bh(&dev->addr_list_lock); | |
3630 | } | |
3631 | ||
3632 | static inline void netif_addr_unlock(struct net_device *dev) | |
3633 | { | |
3634 | spin_unlock(&dev->addr_list_lock); | |
3635 | } | |
3636 | ||
3637 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
3638 | { | |
3639 | spin_unlock_bh(&dev->addr_list_lock); | |
3640 | } | |
3641 | ||
f001fde5 | 3642 | /* |
31278e71 | 3643 | * dev_addrs walker. Should be used only for read access. Call with |
f001fde5 JP |
3644 | * rcu_read_lock held. |
3645 | */ | |
3646 | #define for_each_dev_addr(dev, ha) \ | |
31278e71 | 3647 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
f001fde5 | 3648 | |
1da177e4 LT |
3649 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
3650 | ||
f629d208 | 3651 | void ether_setup(struct net_device *dev); |
1da177e4 LT |
3652 | |
3653 | /* Support for loadable net-drivers */ | |
f629d208 | 3654 | struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, |
c835a677 | 3655 | unsigned char name_assign_type, |
f629d208 JP |
3656 | void (*setup)(struct net_device *), |
3657 | unsigned int txqs, unsigned int rxqs); | |
c835a677 TG |
3658 | #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \ |
3659 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, 1, 1) | |
36909ea4 | 3660 | |
c835a677 TG |
3661 | #define alloc_netdev_mq(sizeof_priv, name, name_assign_type, setup, count) \ |
3662 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, count, \ | |
3663 | count) | |
36909ea4 | 3664 | |
f629d208 JP |
3665 | int register_netdev(struct net_device *dev); |
3666 | void unregister_netdev(struct net_device *dev); | |
f001fde5 | 3667 | |
22bedad3 | 3668 | /* General hardware address lists handling functions */ |
f629d208 JP |
3669 | int __hw_addr_sync(struct netdev_hw_addr_list *to_list, |
3670 | struct netdev_hw_addr_list *from_list, int addr_len); | |
3671 | void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, | |
3672 | struct netdev_hw_addr_list *from_list, int addr_len); | |
670e5b8e AD |
3673 | int __hw_addr_sync_dev(struct netdev_hw_addr_list *list, |
3674 | struct net_device *dev, | |
3675 | int (*sync)(struct net_device *, const unsigned char *), | |
3676 | int (*unsync)(struct net_device *, | |
3677 | const unsigned char *)); | |
3678 | void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list, | |
3679 | struct net_device *dev, | |
3680 | int (*unsync)(struct net_device *, | |
3681 | const unsigned char *)); | |
f629d208 | 3682 | void __hw_addr_init(struct netdev_hw_addr_list *list); |
22bedad3 | 3683 | |
f001fde5 | 3684 | /* Functions used for device addresses handling */ |
f629d208 JP |
3685 | int dev_addr_add(struct net_device *dev, const unsigned char *addr, |
3686 | unsigned char addr_type); | |
3687 | int dev_addr_del(struct net_device *dev, const unsigned char *addr, | |
3688 | unsigned char addr_type); | |
f629d208 JP |
3689 | void dev_addr_flush(struct net_device *dev); |
3690 | int dev_addr_init(struct net_device *dev); | |
a748ee24 JP |
3691 | |
3692 | /* Functions used for unicast addresses handling */ | |
f629d208 JP |
3693 | int dev_uc_add(struct net_device *dev, const unsigned char *addr); |
3694 | int dev_uc_add_excl(struct net_device *dev, const unsigned char *addr); | |
3695 | int dev_uc_del(struct net_device *dev, const unsigned char *addr); | |
3696 | int dev_uc_sync(struct net_device *to, struct net_device *from); | |
3697 | int dev_uc_sync_multiple(struct net_device *to, struct net_device *from); | |
3698 | void dev_uc_unsync(struct net_device *to, struct net_device *from); | |
3699 | void dev_uc_flush(struct net_device *dev); | |
3700 | void dev_uc_init(struct net_device *dev); | |
f001fde5 | 3701 | |
670e5b8e AD |
3702 | /** |
3703 | * __dev_uc_sync - Synchonize device's unicast list | |
3704 | * @dev: device to sync | |
3705 | * @sync: function to call if address should be added | |
3706 | * @unsync: function to call if address should be removed | |
3707 | * | |
3708 | * Add newly added addresses to the interface, and release | |
3709 | * addresses that have been deleted. | |
5e82b4b2 | 3710 | */ |
670e5b8e AD |
3711 | static inline int __dev_uc_sync(struct net_device *dev, |
3712 | int (*sync)(struct net_device *, | |
3713 | const unsigned char *), | |
3714 | int (*unsync)(struct net_device *, | |
3715 | const unsigned char *)) | |
3716 | { | |
3717 | return __hw_addr_sync_dev(&dev->uc, dev, sync, unsync); | |
3718 | } | |
3719 | ||
3720 | /** | |
e793c0f7 | 3721 | * __dev_uc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
3722 | * @dev: device to sync |
3723 | * @unsync: function to call if address should be removed | |
3724 | * | |
3725 | * Remove all addresses that were added to the device by dev_uc_sync(). | |
5e82b4b2 | 3726 | */ |
670e5b8e AD |
3727 | static inline void __dev_uc_unsync(struct net_device *dev, |
3728 | int (*unsync)(struct net_device *, | |
3729 | const unsigned char *)) | |
3730 | { | |
3731 | __hw_addr_unsync_dev(&dev->uc, dev, unsync); | |
3732 | } | |
3733 | ||
22bedad3 | 3734 | /* Functions used for multicast addresses handling */ |
f629d208 JP |
3735 | int dev_mc_add(struct net_device *dev, const unsigned char *addr); |
3736 | int dev_mc_add_global(struct net_device *dev, const unsigned char *addr); | |
3737 | int dev_mc_add_excl(struct net_device *dev, const unsigned char *addr); | |
3738 | int dev_mc_del(struct net_device *dev, const unsigned char *addr); | |
3739 | int dev_mc_del_global(struct net_device *dev, const unsigned char *addr); | |
3740 | int dev_mc_sync(struct net_device *to, struct net_device *from); | |
3741 | int dev_mc_sync_multiple(struct net_device *to, struct net_device *from); | |
3742 | void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
3743 | void dev_mc_flush(struct net_device *dev); | |
3744 | void dev_mc_init(struct net_device *dev); | |
f001fde5 | 3745 | |
670e5b8e AD |
3746 | /** |
3747 | * __dev_mc_sync - Synchonize device's multicast list | |
3748 | * @dev: device to sync | |
3749 | * @sync: function to call if address should be added | |
3750 | * @unsync: function to call if address should be removed | |
3751 | * | |
3752 | * Add newly added addresses to the interface, and release | |
3753 | * addresses that have been deleted. | |
5e82b4b2 | 3754 | */ |
670e5b8e AD |
3755 | static inline int __dev_mc_sync(struct net_device *dev, |
3756 | int (*sync)(struct net_device *, | |
3757 | const unsigned char *), | |
3758 | int (*unsync)(struct net_device *, | |
3759 | const unsigned char *)) | |
3760 | { | |
3761 | return __hw_addr_sync_dev(&dev->mc, dev, sync, unsync); | |
3762 | } | |
3763 | ||
3764 | /** | |
e793c0f7 | 3765 | * __dev_mc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
3766 | * @dev: device to sync |
3767 | * @unsync: function to call if address should be removed | |
3768 | * | |
3769 | * Remove all addresses that were added to the device by dev_mc_sync(). | |
5e82b4b2 | 3770 | */ |
670e5b8e AD |
3771 | static inline void __dev_mc_unsync(struct net_device *dev, |
3772 | int (*unsync)(struct net_device *, | |
3773 | const unsigned char *)) | |
3774 | { | |
3775 | __hw_addr_unsync_dev(&dev->mc, dev, unsync); | |
3776 | } | |
3777 | ||
4417da66 | 3778 | /* Functions used for secondary unicast and multicast support */ |
f629d208 JP |
3779 | void dev_set_rx_mode(struct net_device *dev); |
3780 | void __dev_set_rx_mode(struct net_device *dev); | |
3781 | int dev_set_promiscuity(struct net_device *dev, int inc); | |
3782 | int dev_set_allmulti(struct net_device *dev, int inc); | |
3783 | void netdev_state_change(struct net_device *dev); | |
3784 | void netdev_notify_peers(struct net_device *dev); | |
3785 | void netdev_features_change(struct net_device *dev); | |
1da177e4 | 3786 | /* Load a device via the kmod */ |
f629d208 JP |
3787 | void dev_load(struct net *net, const char *name); |
3788 | struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, | |
3789 | struct rtnl_link_stats64 *storage); | |
3790 | void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64, | |
3791 | const struct net_device_stats *netdev_stats); | |
eeda3fd6 | 3792 | |
1da177e4 | 3793 | extern int netdev_max_backlog; |
3b098e2d | 3794 | extern int netdev_tstamp_prequeue; |
1da177e4 | 3795 | extern int weight_p; |
9ff162a8 | 3796 | |
f629d208 | 3797 | bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev); |
44a40855 VY |
3798 | struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev, |
3799 | struct list_head **iter); | |
f629d208 JP |
3800 | struct net_device *netdev_all_upper_get_next_dev_rcu(struct net_device *dev, |
3801 | struct list_head **iter); | |
8b5be856 | 3802 | |
44a40855 VY |
3803 | /* iterate through upper list, must be called under RCU read lock */ |
3804 | #define netdev_for_each_upper_dev_rcu(dev, updev, iter) \ | |
3805 | for (iter = &(dev)->adj_list.upper, \ | |
3806 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter)); \ | |
3807 | updev; \ | |
3808 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter))) | |
3809 | ||
1a3f060c DA |
3810 | int netdev_walk_all_upper_dev_rcu(struct net_device *dev, |
3811 | int (*fn)(struct net_device *upper_dev, | |
3812 | void *data), | |
3813 | void *data); | |
3814 | ||
3815 | bool netdev_has_upper_dev_all_rcu(struct net_device *dev, | |
3816 | struct net_device *upper_dev); | |
3817 | ||
f629d208 JP |
3818 | void *netdev_lower_get_next_private(struct net_device *dev, |
3819 | struct list_head **iter); | |
3820 | void *netdev_lower_get_next_private_rcu(struct net_device *dev, | |
3821 | struct list_head **iter); | |
31088a11 VF |
3822 | |
3823 | #define netdev_for_each_lower_private(dev, priv, iter) \ | |
3824 | for (iter = (dev)->adj_list.lower.next, \ | |
3825 | priv = netdev_lower_get_next_private(dev, &(iter)); \ | |
3826 | priv; \ | |
3827 | priv = netdev_lower_get_next_private(dev, &(iter))) | |
3828 | ||
3829 | #define netdev_for_each_lower_private_rcu(dev, priv, iter) \ | |
3830 | for (iter = &(dev)->adj_list.lower, \ | |
3831 | priv = netdev_lower_get_next_private_rcu(dev, &(iter)); \ | |
3832 | priv; \ | |
3833 | priv = netdev_lower_get_next_private_rcu(dev, &(iter))) | |
3834 | ||
4085ebe8 VY |
3835 | void *netdev_lower_get_next(struct net_device *dev, |
3836 | struct list_head **iter); | |
7ce856aa | 3837 | |
4085ebe8 | 3838 | #define netdev_for_each_lower_dev(dev, ldev, iter) \ |
cfdd28be | 3839 | for (iter = (dev)->adj_list.lower.next, \ |
4085ebe8 VY |
3840 | ldev = netdev_lower_get_next(dev, &(iter)); \ |
3841 | ldev; \ | |
3842 | ldev = netdev_lower_get_next(dev, &(iter))) | |
3843 | ||
7ce856aa JP |
3844 | struct net_device *netdev_all_lower_get_next(struct net_device *dev, |
3845 | struct list_head **iter); | |
3846 | struct net_device *netdev_all_lower_get_next_rcu(struct net_device *dev, | |
3847 | struct list_head **iter); | |
3848 | ||
1a3f060c DA |
3849 | int netdev_walk_all_lower_dev(struct net_device *dev, |
3850 | int (*fn)(struct net_device *lower_dev, | |
3851 | void *data), | |
3852 | void *data); | |
3853 | int netdev_walk_all_lower_dev_rcu(struct net_device *dev, | |
3854 | int (*fn)(struct net_device *lower_dev, | |
3855 | void *data), | |
3856 | void *data); | |
3857 | ||
f629d208 | 3858 | void *netdev_adjacent_get_private(struct list_head *adj_list); |
e001bfad | 3859 | void *netdev_lower_get_first_private_rcu(struct net_device *dev); |
f629d208 JP |
3860 | struct net_device *netdev_master_upper_dev_get(struct net_device *dev); |
3861 | struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev); | |
3862 | int netdev_upper_dev_link(struct net_device *dev, struct net_device *upper_dev); | |
3863 | int netdev_master_upper_dev_link(struct net_device *dev, | |
6dffb044 | 3864 | struct net_device *upper_dev, |
29bf24af | 3865 | void *upper_priv, void *upper_info); |
f629d208 JP |
3866 | void netdev_upper_dev_unlink(struct net_device *dev, |
3867 | struct net_device *upper_dev); | |
5bb025fa | 3868 | void netdev_adjacent_rename_links(struct net_device *dev, char *oldname); |
f629d208 JP |
3869 | void *netdev_lower_dev_get_private(struct net_device *dev, |
3870 | struct net_device *lower_dev); | |
04d48266 JP |
3871 | void netdev_lower_state_changed(struct net_device *lower_dev, |
3872 | void *lower_state_info); | |
18bfb924 JP |
3873 | int netdev_default_l2upper_neigh_construct(struct net_device *dev, |
3874 | struct neighbour *n); | |
3875 | void netdev_default_l2upper_neigh_destroy(struct net_device *dev, | |
3876 | struct neighbour *n); | |
960fb622 ED |
3877 | |
3878 | /* RSS keys are 40 or 52 bytes long */ | |
3879 | #define NETDEV_RSS_KEY_LEN 52 | |
ba905f5e | 3880 | extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
3881 | void netdev_rss_key_fill(void *buffer, size_t len); |
3882 | ||
952fcfd0 | 3883 | int dev_get_nest_level(struct net_device *dev); |
f629d208 JP |
3884 | int skb_checksum_help(struct sk_buff *skb); |
3885 | struct sk_buff *__skb_gso_segment(struct sk_buff *skb, | |
3886 | netdev_features_t features, bool tx_path); | |
3887 | struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb, | |
3888 | netdev_features_t features); | |
12b0004d | 3889 | |
61bd3857 MS |
3890 | struct netdev_bonding_info { |
3891 | ifslave slave; | |
3892 | ifbond master; | |
3893 | }; | |
3894 | ||
3895 | struct netdev_notifier_bonding_info { | |
3896 | struct netdev_notifier_info info; /* must be first */ | |
3897 | struct netdev_bonding_info bonding_info; | |
3898 | }; | |
3899 | ||
3900 | void netdev_bonding_info_change(struct net_device *dev, | |
3901 | struct netdev_bonding_info *bonding_info); | |
3902 | ||
12b0004d CW |
3903 | static inline |
3904 | struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features) | |
3905 | { | |
3906 | return __skb_gso_segment(skb, features, true); | |
3907 | } | |
53d6471c | 3908 | __be16 skb_network_protocol(struct sk_buff *skb, int *depth); |
ec5f0615 PS |
3909 | |
3910 | static inline bool can_checksum_protocol(netdev_features_t features, | |
3911 | __be16 protocol) | |
3912 | { | |
c8cd0989 TH |
3913 | if (protocol == htons(ETH_P_FCOE)) |
3914 | return !!(features & NETIF_F_FCOE_CRC); | |
3915 | ||
3916 | /* Assume this is an IP checksum (not SCTP CRC) */ | |
3917 | ||
3918 | if (features & NETIF_F_HW_CSUM) { | |
3919 | /* Can checksum everything */ | |
3920 | return true; | |
3921 | } | |
3922 | ||
3923 | switch (protocol) { | |
3924 | case htons(ETH_P_IP): | |
3925 | return !!(features & NETIF_F_IP_CSUM); | |
3926 | case htons(ETH_P_IPV6): | |
3927 | return !!(features & NETIF_F_IPV6_CSUM); | |
3928 | default: | |
3929 | return false; | |
3930 | } | |
ec5f0615 | 3931 | } |
12b0004d | 3932 | |
fb286bb2 | 3933 | #ifdef CONFIG_BUG |
f629d208 | 3934 | void netdev_rx_csum_fault(struct net_device *dev); |
fb286bb2 HX |
3935 | #else |
3936 | static inline void netdev_rx_csum_fault(struct net_device *dev) | |
3937 | { | |
3938 | } | |
3939 | #endif | |
1da177e4 | 3940 | /* rx skb timestamps */ |
f629d208 JP |
3941 | void net_enable_timestamp(void); |
3942 | void net_disable_timestamp(void); | |
1da177e4 | 3943 | |
20380731 | 3944 | #ifdef CONFIG_PROC_FS |
f629d208 | 3945 | int __init dev_proc_init(void); |
900ff8c6 CW |
3946 | #else |
3947 | #define dev_proc_init() 0 | |
20380731 ACM |
3948 | #endif |
3949 | ||
4798248e | 3950 | static inline netdev_tx_t __netdev_start_xmit(const struct net_device_ops *ops, |
fa2dbdc2 DM |
3951 | struct sk_buff *skb, struct net_device *dev, |
3952 | bool more) | |
4798248e | 3953 | { |
fa2dbdc2 | 3954 | skb->xmit_more = more ? 1 : 0; |
0b725a2c | 3955 | return ops->ndo_start_xmit(skb, dev); |
4798248e DM |
3956 | } |
3957 | ||
10b3ad8c | 3958 | static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev, |
fa2dbdc2 | 3959 | struct netdev_queue *txq, bool more) |
4798248e DM |
3960 | { |
3961 | const struct net_device_ops *ops = dev->netdev_ops; | |
10b3ad8c | 3962 | int rc; |
4798248e | 3963 | |
fa2dbdc2 | 3964 | rc = __netdev_start_xmit(ops, skb, dev, more); |
10b3ad8c DM |
3965 | if (rc == NETDEV_TX_OK) |
3966 | txq_trans_update(txq); | |
3967 | ||
3968 | return rc; | |
4798248e DM |
3969 | } |
3970 | ||
42a2d923 LT |
3971 | int netdev_class_create_file_ns(struct class_attribute *class_attr, |
3972 | const void *ns); | |
3973 | void netdev_class_remove_file_ns(struct class_attribute *class_attr, | |
3974 | const void *ns); | |
58292cbe TH |
3975 | |
3976 | static inline int netdev_class_create_file(struct class_attribute *class_attr) | |
3977 | { | |
3978 | return netdev_class_create_file_ns(class_attr, NULL); | |
3979 | } | |
3980 | ||
3981 | static inline void netdev_class_remove_file(struct class_attribute *class_attr) | |
3982 | { | |
3983 | netdev_class_remove_file_ns(class_attr, NULL); | |
3984 | } | |
b8a9787e | 3985 | |
04600794 JB |
3986 | extern struct kobj_ns_type_operations net_ns_type_operations; |
3987 | ||
f629d208 | 3988 | const char *netdev_drivername(const struct net_device *dev); |
6579e57b | 3989 | |
f629d208 | 3990 | void linkwatch_run_queue(void); |
20380731 | 3991 | |
da08143b MK |
3992 | static inline netdev_features_t netdev_intersect_features(netdev_features_t f1, |
3993 | netdev_features_t f2) | |
3994 | { | |
c8cd0989 TH |
3995 | if ((f1 ^ f2) & NETIF_F_HW_CSUM) { |
3996 | if (f1 & NETIF_F_HW_CSUM) | |
b6a0e72a | 3997 | f1 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 3998 | else |
b6a0e72a | 3999 | f2 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 4000 | } |
da08143b | 4001 | |
c8cd0989 | 4002 | return f1 & f2; |
da08143b MK |
4003 | } |
4004 | ||
c8f44aff MM |
4005 | static inline netdev_features_t netdev_get_wanted_features( |
4006 | struct net_device *dev) | |
5455c699 MM |
4007 | { |
4008 | return (dev->features & ~dev->hw_features) | dev->wanted_features; | |
4009 | } | |
c8f44aff MM |
4010 | netdev_features_t netdev_increment_features(netdev_features_t all, |
4011 | netdev_features_t one, netdev_features_t mask); | |
b0ce3508 ED |
4012 | |
4013 | /* Allow TSO being used on stacked device : | |
4014 | * Performing the GSO segmentation before last device | |
4015 | * is a performance improvement. | |
4016 | */ | |
4017 | static inline netdev_features_t netdev_add_tso_features(netdev_features_t features, | |
4018 | netdev_features_t mask) | |
4019 | { | |
4020 | return netdev_increment_features(features, NETIF_F_ALL_TSO, mask); | |
4021 | } | |
4022 | ||
6cb6a27c | 4023 | int __netdev_update_features(struct net_device *dev); |
5455c699 | 4024 | void netdev_update_features(struct net_device *dev); |
afe12cc8 | 4025 | void netdev_change_features(struct net_device *dev); |
7f353bf2 | 4026 | |
fc4a7489 PM |
4027 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
4028 | struct net_device *dev); | |
4029 | ||
e38f3025 TM |
4030 | netdev_features_t passthru_features_check(struct sk_buff *skb, |
4031 | struct net_device *dev, | |
4032 | netdev_features_t features); | |
c1e756bf | 4033 | netdev_features_t netif_skb_features(struct sk_buff *skb); |
58e998c6 | 4034 | |
4d29515f | 4035 | static inline bool net_gso_ok(netdev_features_t features, int gso_type) |
576a30eb | 4036 | { |
7b748340 | 4037 | netdev_features_t feature = (netdev_features_t)gso_type << NETIF_F_GSO_SHIFT; |
0345e186 MM |
4038 | |
4039 | /* check flags correspondence */ | |
4040 | BUILD_BUG_ON(SKB_GSO_TCPV4 != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT)); | |
4041 | BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_UFO >> NETIF_F_GSO_SHIFT)); | |
4042 | BUILD_BUG_ON(SKB_GSO_DODGY != (NETIF_F_GSO_ROBUST >> NETIF_F_GSO_SHIFT)); | |
4043 | BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT)); | |
cbc53e08 | 4044 | BUILD_BUG_ON(SKB_GSO_TCP_FIXEDID != (NETIF_F_TSO_MANGLEID >> NETIF_F_GSO_SHIFT)); |
0345e186 MM |
4045 | BUILD_BUG_ON(SKB_GSO_TCPV6 != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT)); |
4046 | BUILD_BUG_ON(SKB_GSO_FCOE != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
4047 | BUILD_BUG_ON(SKB_GSO_GRE != (NETIF_F_GSO_GRE >> NETIF_F_GSO_SHIFT)); |
4048 | BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT)); | |
7e13318d TH |
4049 | BUILD_BUG_ON(SKB_GSO_IPXIP4 != (NETIF_F_GSO_IPXIP4 >> NETIF_F_GSO_SHIFT)); |
4050 | BUILD_BUG_ON(SKB_GSO_IPXIP6 != (NETIF_F_GSO_IPXIP6 >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
4051 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT)); |
4052 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT)); | |
802ab55a | 4053 | BUILD_BUG_ON(SKB_GSO_PARTIAL != (NETIF_F_GSO_PARTIAL >> NETIF_F_GSO_SHIFT)); |
e585f236 | 4054 | BUILD_BUG_ON(SKB_GSO_TUNNEL_REMCSUM != (NETIF_F_GSO_TUNNEL_REMCSUM >> NETIF_F_GSO_SHIFT)); |
90017acc | 4055 | BUILD_BUG_ON(SKB_GSO_SCTP != (NETIF_F_GSO_SCTP >> NETIF_F_GSO_SHIFT)); |
0345e186 | 4056 | |
d6b4991a | 4057 | return (features & feature) == feature; |
576a30eb HX |
4058 | } |
4059 | ||
4d29515f | 4060 | static inline bool skb_gso_ok(struct sk_buff *skb, netdev_features_t features) |
bcd76111 | 4061 | { |
278b2513 | 4062 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
21dc3301 | 4063 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
bcd76111 HX |
4064 | } |
4065 | ||
8b86a61d | 4066 | static inline bool netif_needs_gso(struct sk_buff *skb, |
4d29515f | 4067 | netdev_features_t features) |
7967168c | 4068 | { |
fc741216 | 4069 | return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || |
cdbee74c YZ |
4070 | unlikely((skb->ip_summed != CHECKSUM_PARTIAL) && |
4071 | (skb->ip_summed != CHECKSUM_UNNECESSARY))); | |
7967168c HX |
4072 | } |
4073 | ||
82cc1a7a PWJ |
4074 | static inline void netif_set_gso_max_size(struct net_device *dev, |
4075 | unsigned int size) | |
4076 | { | |
4077 | dev->gso_max_size = size; | |
4078 | } | |
4079 | ||
7a7ffbab WCC |
4080 | static inline void skb_gso_error_unwind(struct sk_buff *skb, __be16 protocol, |
4081 | int pulled_hlen, u16 mac_offset, | |
4082 | int mac_len) | |
4083 | { | |
4084 | skb->protocol = protocol; | |
4085 | skb->encapsulation = 1; | |
4086 | skb_push(skb, pulled_hlen); | |
4087 | skb_reset_transport_header(skb); | |
4088 | skb->mac_header = mac_offset; | |
4089 | skb->network_header = skb->mac_header + mac_len; | |
4090 | skb->mac_len = mac_len; | |
4091 | } | |
4092 | ||
3c175784 SD |
4093 | static inline bool netif_is_macsec(const struct net_device *dev) |
4094 | { | |
4095 | return dev->priv_flags & IFF_MACSEC; | |
4096 | } | |
4097 | ||
b618aaa9 | 4098 | static inline bool netif_is_macvlan(const struct net_device *dev) |
a6cc0cfa JF |
4099 | { |
4100 | return dev->priv_flags & IFF_MACVLAN; | |
4101 | } | |
4102 | ||
b618aaa9 | 4103 | static inline bool netif_is_macvlan_port(const struct net_device *dev) |
2f33e7d5 MB |
4104 | { |
4105 | return dev->priv_flags & IFF_MACVLAN_PORT; | |
4106 | } | |
4107 | ||
b618aaa9 | 4108 | static inline bool netif_is_ipvlan(const struct net_device *dev) |
5933fea7 MB |
4109 | { |
4110 | return dev->priv_flags & IFF_IPVLAN_SLAVE; | |
4111 | } | |
4112 | ||
b618aaa9 | 4113 | static inline bool netif_is_ipvlan_port(const struct net_device *dev) |
5933fea7 MB |
4114 | { |
4115 | return dev->priv_flags & IFF_IPVLAN_MASTER; | |
4116 | } | |
4117 | ||
b618aaa9 | 4118 | static inline bool netif_is_bond_master(const struct net_device *dev) |
8a7fbfab | 4119 | { |
4120 | return dev->flags & IFF_MASTER && dev->priv_flags & IFF_BONDING; | |
4121 | } | |
4122 | ||
b618aaa9 | 4123 | static inline bool netif_is_bond_slave(const struct net_device *dev) |
1765a575 JP |
4124 | { |
4125 | return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING; | |
4126 | } | |
4127 | ||
3bdc0eba BG |
4128 | static inline bool netif_supports_nofcs(struct net_device *dev) |
4129 | { | |
4130 | return dev->priv_flags & IFF_SUPP_NOFCS; | |
4131 | } | |
4132 | ||
007979ea | 4133 | static inline bool netif_is_l3_master(const struct net_device *dev) |
4e3c8992 | 4134 | { |
007979ea | 4135 | return dev->priv_flags & IFF_L3MDEV_MASTER; |
4e3c8992 DA |
4136 | } |
4137 | ||
fee6d4c7 DA |
4138 | static inline bool netif_is_l3_slave(const struct net_device *dev) |
4139 | { | |
4140 | return dev->priv_flags & IFF_L3MDEV_SLAVE; | |
4141 | } | |
4142 | ||
0894ae3f JP |
4143 | static inline bool netif_is_bridge_master(const struct net_device *dev) |
4144 | { | |
4145 | return dev->priv_flags & IFF_EBRIDGE; | |
4146 | } | |
4147 | ||
28f9ee22 VY |
4148 | static inline bool netif_is_bridge_port(const struct net_device *dev) |
4149 | { | |
4150 | return dev->priv_flags & IFF_BRIDGE_PORT; | |
4151 | } | |
4152 | ||
35d4e172 JP |
4153 | static inline bool netif_is_ovs_master(const struct net_device *dev) |
4154 | { | |
4155 | return dev->priv_flags & IFF_OPENVSWITCH; | |
4156 | } | |
4157 | ||
b618aaa9 | 4158 | static inline bool netif_is_team_master(const struct net_device *dev) |
c981e421 JP |
4159 | { |
4160 | return dev->priv_flags & IFF_TEAM; | |
4161 | } | |
4162 | ||
b618aaa9 | 4163 | static inline bool netif_is_team_port(const struct net_device *dev) |
f7f019ee JP |
4164 | { |
4165 | return dev->priv_flags & IFF_TEAM_PORT; | |
4166 | } | |
4167 | ||
b618aaa9 | 4168 | static inline bool netif_is_lag_master(const struct net_device *dev) |
7be61833 JP |
4169 | { |
4170 | return netif_is_bond_master(dev) || netif_is_team_master(dev); | |
4171 | } | |
4172 | ||
b618aaa9 | 4173 | static inline bool netif_is_lag_port(const struct net_device *dev) |
e0ba1414 JP |
4174 | { |
4175 | return netif_is_bond_slave(dev) || netif_is_team_port(dev); | |
4176 | } | |
4177 | ||
d4ab4286 KJ |
4178 | static inline bool netif_is_rxfh_configured(const struct net_device *dev) |
4179 | { | |
4180 | return dev->priv_flags & IFF_RXFH_CONFIGURED; | |
4181 | } | |
4182 | ||
02875878 ED |
4183 | /* This device needs to keep skb dst for qdisc enqueue or ndo_start_xmit() */ |
4184 | static inline void netif_keep_dst(struct net_device *dev) | |
4185 | { | |
4186 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM); | |
4187 | } | |
4188 | ||
18d3df3e PA |
4189 | /* return true if dev can't cope with mtu frames that need vlan tag insertion */ |
4190 | static inline bool netif_reduces_vlan_mtu(struct net_device *dev) | |
4191 | { | |
4192 | /* TODO: reserve and use an additional IFF bit, if we get more users */ | |
4193 | return dev->priv_flags & IFF_MACSEC; | |
4194 | } | |
4195 | ||
505d4f73 | 4196 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 | 4197 | |
571ba423 JP |
4198 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ |
4199 | ||
4200 | /* netdev_printk helpers, similar to dev_printk */ | |
4201 | ||
4202 | static inline const char *netdev_name(const struct net_device *dev) | |
4203 | { | |
c6f854d5 VF |
4204 | if (!dev->name[0] || strchr(dev->name, '%')) |
4205 | return "(unnamed net_device)"; | |
571ba423 JP |
4206 | return dev->name; |
4207 | } | |
4208 | ||
ccc7f496 VF |
4209 | static inline const char *netdev_reg_state(const struct net_device *dev) |
4210 | { | |
4211 | switch (dev->reg_state) { | |
4212 | case NETREG_UNINITIALIZED: return " (uninitialized)"; | |
4213 | case NETREG_REGISTERED: return ""; | |
4214 | case NETREG_UNREGISTERING: return " (unregistering)"; | |
4215 | case NETREG_UNREGISTERED: return " (unregistered)"; | |
4216 | case NETREG_RELEASED: return " (released)"; | |
4217 | case NETREG_DUMMY: return " (dummy)"; | |
4218 | } | |
4219 | ||
4220 | WARN_ONCE(1, "%s: unknown reg_state %d\n", dev->name, dev->reg_state); | |
4221 | return " (unknown)"; | |
4222 | } | |
4223 | ||
f629d208 | 4224 | __printf(3, 4) |
6ea754eb JP |
4225 | void netdev_printk(const char *level, const struct net_device *dev, |
4226 | const char *format, ...); | |
f629d208 | 4227 | __printf(2, 3) |
6ea754eb | 4228 | void netdev_emerg(const struct net_device *dev, const char *format, ...); |
f629d208 | 4229 | __printf(2, 3) |
6ea754eb | 4230 | void netdev_alert(const struct net_device *dev, const char *format, ...); |
f629d208 | 4231 | __printf(2, 3) |
6ea754eb | 4232 | void netdev_crit(const struct net_device *dev, const char *format, ...); |
f629d208 | 4233 | __printf(2, 3) |
6ea754eb | 4234 | void netdev_err(const struct net_device *dev, const char *format, ...); |
f629d208 | 4235 | __printf(2, 3) |
6ea754eb | 4236 | void netdev_warn(const struct net_device *dev, const char *format, ...); |
f629d208 | 4237 | __printf(2, 3) |
6ea754eb | 4238 | void netdev_notice(const struct net_device *dev, const char *format, ...); |
f629d208 | 4239 | __printf(2, 3) |
6ea754eb | 4240 | void netdev_info(const struct net_device *dev, const char *format, ...); |
571ba423 | 4241 | |
8909c9ad VK |
4242 | #define MODULE_ALIAS_NETDEV(device) \ |
4243 | MODULE_ALIAS("netdev-" device) | |
4244 | ||
b558c96f | 4245 | #if defined(CONFIG_DYNAMIC_DEBUG) |
571ba423 JP |
4246 | #define netdev_dbg(__dev, format, args...) \ |
4247 | do { \ | |
ffa10cb4 | 4248 | dynamic_netdev_dbg(__dev, format, ##args); \ |
571ba423 | 4249 | } while (0) |
b558c96f JC |
4250 | #elif defined(DEBUG) |
4251 | #define netdev_dbg(__dev, format, args...) \ | |
4252 | netdev_printk(KERN_DEBUG, __dev, format, ##args) | |
571ba423 JP |
4253 | #else |
4254 | #define netdev_dbg(__dev, format, args...) \ | |
4255 | ({ \ | |
4256 | if (0) \ | |
4257 | netdev_printk(KERN_DEBUG, __dev, format, ##args); \ | |
571ba423 JP |
4258 | }) |
4259 | #endif | |
4260 | ||
4261 | #if defined(VERBOSE_DEBUG) | |
4262 | #define netdev_vdbg netdev_dbg | |
4263 | #else | |
4264 | ||
4265 | #define netdev_vdbg(dev, format, args...) \ | |
4266 | ({ \ | |
4267 | if (0) \ | |
4268 | netdev_printk(KERN_DEBUG, dev, format, ##args); \ | |
4269 | 0; \ | |
4270 | }) | |
4271 | #endif | |
4272 | ||
4273 | /* | |
4274 | * netdev_WARN() acts like dev_printk(), but with the key difference | |
4275 | * of using a WARN/WARN_ON to get the message out, including the | |
4276 | * file/line information and a backtrace. | |
4277 | */ | |
4278 | #define netdev_WARN(dev, format, args...) \ | |
ccc7f496 VF |
4279 | WARN(1, "netdevice: %s%s\n" format, netdev_name(dev), \ |
4280 | netdev_reg_state(dev), ##args) | |
571ba423 | 4281 | |
b3d95c5c JP |
4282 | /* netif printk helpers, similar to netdev_printk */ |
4283 | ||
4284 | #define netif_printk(priv, type, level, dev, fmt, args...) \ | |
4285 | do { \ | |
4286 | if (netif_msg_##type(priv)) \ | |
4287 | netdev_printk(level, (dev), fmt, ##args); \ | |
4288 | } while (0) | |
4289 | ||
f45f4321 JP |
4290 | #define netif_level(level, priv, type, dev, fmt, args...) \ |
4291 | do { \ | |
4292 | if (netif_msg_##type(priv)) \ | |
4293 | netdev_##level(dev, fmt, ##args); \ | |
4294 | } while (0) | |
4295 | ||
b3d95c5c | 4296 | #define netif_emerg(priv, type, dev, fmt, args...) \ |
f45f4321 | 4297 | netif_level(emerg, priv, type, dev, fmt, ##args) |
b3d95c5c | 4298 | #define netif_alert(priv, type, dev, fmt, args...) \ |
f45f4321 | 4299 | netif_level(alert, priv, type, dev, fmt, ##args) |
b3d95c5c | 4300 | #define netif_crit(priv, type, dev, fmt, args...) \ |
f45f4321 | 4301 | netif_level(crit, priv, type, dev, fmt, ##args) |
b3d95c5c | 4302 | #define netif_err(priv, type, dev, fmt, args...) \ |
f45f4321 | 4303 | netif_level(err, priv, type, dev, fmt, ##args) |
b3d95c5c | 4304 | #define netif_warn(priv, type, dev, fmt, args...) \ |
f45f4321 | 4305 | netif_level(warn, priv, type, dev, fmt, ##args) |
b3d95c5c | 4306 | #define netif_notice(priv, type, dev, fmt, args...) \ |
f45f4321 | 4307 | netif_level(notice, priv, type, dev, fmt, ##args) |
b3d95c5c | 4308 | #define netif_info(priv, type, dev, fmt, args...) \ |
f45f4321 | 4309 | netif_level(info, priv, type, dev, fmt, ##args) |
b3d95c5c | 4310 | |
0053ea9c | 4311 | #if defined(CONFIG_DYNAMIC_DEBUG) |
b3d95c5c JP |
4312 | #define netif_dbg(priv, type, netdev, format, args...) \ |
4313 | do { \ | |
4314 | if (netif_msg_##type(priv)) \ | |
b5fb0a03 | 4315 | dynamic_netdev_dbg(netdev, format, ##args); \ |
b3d95c5c | 4316 | } while (0) |
0053ea9c JP |
4317 | #elif defined(DEBUG) |
4318 | #define netif_dbg(priv, type, dev, format, args...) \ | |
4319 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args) | |
b3d95c5c JP |
4320 | #else |
4321 | #define netif_dbg(priv, type, dev, format, args...) \ | |
4322 | ({ \ | |
4323 | if (0) \ | |
4324 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ | |
4325 | 0; \ | |
4326 | }) | |
4327 | #endif | |
4328 | ||
4329 | #if defined(VERBOSE_DEBUG) | |
bcfcc450 | 4330 | #define netif_vdbg netif_dbg |
b3d95c5c JP |
4331 | #else |
4332 | #define netif_vdbg(priv, type, dev, format, args...) \ | |
4333 | ({ \ | |
4334 | if (0) \ | |
a4ed89cb | 4335 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
b3d95c5c JP |
4336 | 0; \ |
4337 | }) | |
4338 | #endif | |
571ba423 | 4339 | |
900ff8c6 CW |
4340 | /* |
4341 | * The list of packet types we will receive (as opposed to discard) | |
4342 | * and the routines to invoke. | |
4343 | * | |
4344 | * Why 16. Because with 16 the only overlap we get on a hash of the | |
4345 | * low nibble of the protocol value is RARP/SNAP/X.25. | |
4346 | * | |
4347 | * NOTE: That is no longer true with the addition of VLAN tags. Not | |
4348 | * sure which should go first, but I bet it won't make much | |
4349 | * difference if we are running VLANs. The good news is that | |
4350 | * this protocol won't be in the list unless compiled in, so | |
4351 | * the average user (w/out VLANs) will not be adversely affected. | |
4352 | * --BLG | |
4353 | * | |
4354 | * 0800 IP | |
4355 | * 8100 802.1Q VLAN | |
4356 | * 0001 802.3 | |
4357 | * 0002 AX.25 | |
4358 | * 0004 802.2 | |
4359 | * 8035 RARP | |
4360 | * 0005 SNAP | |
4361 | * 0805 X.25 | |
4362 | * 0806 ARP | |
4363 | * 8137 IPX | |
4364 | * 0009 Localtalk | |
4365 | * 86DD IPv6 | |
4366 | */ | |
4367 | #define PTYPE_HASH_SIZE (16) | |
4368 | #define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) | |
4369 | ||
385a154c | 4370 | #endif /* _LINUX_NETDEVICE_H */ |