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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; | |
13bfff25 | 195 | extern struct static_key rfs_needed; |
adc9300e ED |
196 | #endif |
197 | ||
1da177e4 LT |
198 | struct neighbour; |
199 | struct neigh_parms; | |
200 | struct sk_buff; | |
201 | ||
f001fde5 JP |
202 | struct netdev_hw_addr { |
203 | struct list_head list; | |
204 | unsigned char addr[MAX_ADDR_LEN]; | |
205 | unsigned char type; | |
ccffad25 JP |
206 | #define NETDEV_HW_ADDR_T_LAN 1 |
207 | #define NETDEV_HW_ADDR_T_SAN 2 | |
208 | #define NETDEV_HW_ADDR_T_SLAVE 3 | |
209 | #define NETDEV_HW_ADDR_T_UNICAST 4 | |
22bedad3 | 210 | #define NETDEV_HW_ADDR_T_MULTICAST 5 |
22bedad3 | 211 | bool global_use; |
4cd729b0 | 212 | int sync_cnt; |
8f8f103d | 213 | int refcount; |
4543fbef | 214 | int synced; |
f001fde5 JP |
215 | struct rcu_head rcu_head; |
216 | }; | |
217 | ||
31278e71 JP |
218 | struct netdev_hw_addr_list { |
219 | struct list_head list; | |
220 | int count; | |
221 | }; | |
222 | ||
22bedad3 JP |
223 | #define netdev_hw_addr_list_count(l) ((l)->count) |
224 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) | |
225 | #define netdev_hw_addr_list_for_each(ha, l) \ | |
226 | list_for_each_entry(ha, &(l)->list, list) | |
32e7bfc4 | 227 | |
22bedad3 JP |
228 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
229 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) | |
230 | #define netdev_for_each_uc_addr(ha, dev) \ | |
231 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) | |
6683ece3 | 232 | |
22bedad3 JP |
233 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
234 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) | |
18e225f2 | 235 | #define netdev_for_each_mc_addr(ha, dev) \ |
22bedad3 | 236 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
6683ece3 | 237 | |
d94d9fee | 238 | struct hh_cache { |
f6b72b62 | 239 | u16 hh_len; |
5c25f686 | 240 | u16 __pad; |
3644f0ce | 241 | seqlock_t hh_lock; |
1da177e4 LT |
242 | |
243 | /* cached hardware header; allow for machine alignment needs. */ | |
244 | #define HH_DATA_MOD 16 | |
245 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 246 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
247 | #define HH_DATA_ALIGN(__len) \ |
248 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
249 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
250 | }; | |
251 | ||
5e82b4b2 | 252 | /* Reserve HH_DATA_MOD byte-aligned hard_header_len, but at least that much. |
1da177e4 LT |
253 | * Alternative is: |
254 | * dev->hard_header_len ? (dev->hard_header_len + | |
255 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
256 | * | |
257 | * We could use other alignment values, but we must maintain the | |
258 | * relationship HH alignment <= LL alignment. | |
259 | */ | |
260 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 261 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 262 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 | 263 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 264 | |
3b04ddde SH |
265 | struct header_ops { |
266 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
267 | unsigned short type, const void *daddr, | |
95c96174 | 268 | const void *saddr, unsigned int len); |
3b04ddde | 269 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); |
e69dd336 | 270 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh, __be16 type); |
3b04ddde SH |
271 | void (*cache_update)(struct hh_cache *hh, |
272 | const struct net_device *dev, | |
273 | const unsigned char *haddr); | |
2793a23a | 274 | bool (*validate)(const char *ll_header, unsigned int len); |
3b04ddde SH |
275 | }; |
276 | ||
1da177e4 | 277 | /* These flag bits are private to the generic network queueing |
5e82b4b2 | 278 | * layer; they may not be explicitly referenced by any other |
1da177e4 LT |
279 | * code. |
280 | */ | |
281 | ||
d94d9fee | 282 | enum netdev_state_t { |
1da177e4 LT |
283 | __LINK_STATE_START, |
284 | __LINK_STATE_PRESENT, | |
1da177e4 | 285 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
286 | __LINK_STATE_LINKWATCH_PENDING, |
287 | __LINK_STATE_DORMANT, | |
1da177e4 LT |
288 | }; |
289 | ||
290 | ||
291 | /* | |
5e82b4b2 | 292 | * This structure holds boot-time configured netdevice settings. They |
fe2918b0 | 293 | * are then used in the device probing. |
1da177e4 LT |
294 | */ |
295 | struct netdev_boot_setup { | |
296 | char name[IFNAMSIZ]; | |
297 | struct ifmap map; | |
298 | }; | |
299 | #define NETDEV_BOOT_SETUP_MAX 8 | |
300 | ||
f629d208 | 301 | int __init netdev_boot_setup(char *str); |
1da177e4 | 302 | |
bea3348e SH |
303 | /* |
304 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
305 | */ | |
306 | struct napi_struct { | |
307 | /* The poll_list must only be managed by the entity which | |
308 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
309 | * whoever atomically sets that bit can add this napi_struct | |
5e82b4b2 | 310 | * to the per-CPU poll_list, and whoever clears that bit |
bea3348e SH |
311 | * can remove from the list right before clearing the bit. |
312 | */ | |
313 | struct list_head poll_list; | |
314 | ||
315 | unsigned long state; | |
316 | int weight; | |
404f7c9e | 317 | unsigned int gro_count; |
bea3348e SH |
318 | int (*poll)(struct napi_struct *, int); |
319 | #ifdef CONFIG_NETPOLL | |
bea3348e | 320 | int poll_owner; |
bea3348e | 321 | #endif |
5d38a079 | 322 | struct net_device *dev; |
d565b0a1 | 323 | struct sk_buff *gro_list; |
5d38a079 | 324 | struct sk_buff *skb; |
3b47d303 | 325 | struct hrtimer timer; |
404f7c9e | 326 | struct list_head dev_list; |
af12fa6e ET |
327 | struct hlist_node napi_hash_node; |
328 | unsigned int napi_id; | |
bea3348e SH |
329 | }; |
330 | ||
d94d9fee | 331 | enum { |
bea3348e | 332 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
39e6c820 | 333 | NAPI_STATE_MISSED, /* reschedule a napi */ |
a0a46196 | 334 | NAPI_STATE_DISABLE, /* Disable pending */ |
7b363e44 | 335 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
d64b5e85 ED |
336 | NAPI_STATE_HASHED, /* In NAPI hash (busy polling possible) */ |
337 | NAPI_STATE_NO_BUSY_POLL,/* Do not add in napi_hash, no busy polling */ | |
217f6974 ED |
338 | NAPI_STATE_IN_BUSY_POLL,/* sk_busy_loop() owns this NAPI */ |
339 | }; | |
340 | ||
341 | enum { | |
39e6c820 ED |
342 | NAPIF_STATE_SCHED = BIT(NAPI_STATE_SCHED), |
343 | NAPIF_STATE_MISSED = BIT(NAPI_STATE_MISSED), | |
344 | NAPIF_STATE_DISABLE = BIT(NAPI_STATE_DISABLE), | |
345 | NAPIF_STATE_NPSVC = BIT(NAPI_STATE_NPSVC), | |
346 | NAPIF_STATE_HASHED = BIT(NAPI_STATE_HASHED), | |
347 | NAPIF_STATE_NO_BUSY_POLL = BIT(NAPI_STATE_NO_BUSY_POLL), | |
348 | NAPIF_STATE_IN_BUSY_POLL = BIT(NAPI_STATE_IN_BUSY_POLL), | |
bea3348e SH |
349 | }; |
350 | ||
5b252f0c | 351 | enum gro_result { |
d1c76af9 HX |
352 | GRO_MERGED, |
353 | GRO_MERGED_FREE, | |
354 | GRO_HELD, | |
355 | GRO_NORMAL, | |
356 | GRO_DROP, | |
25393d3f | 357 | GRO_CONSUMED, |
d1c76af9 | 358 | }; |
5b252f0c | 359 | typedef enum gro_result gro_result_t; |
d1c76af9 | 360 | |
8a4eb573 JP |
361 | /* |
362 | * enum rx_handler_result - Possible return values for rx_handlers. | |
363 | * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it | |
364 | * further. | |
365 | * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in | |
366 | * case skb->dev was changed by rx_handler. | |
367 | * @RX_HANDLER_EXACT: Force exact delivery, no wildcard. | |
5e82b4b2 | 368 | * @RX_HANDLER_PASS: Do nothing, pass the skb as if no rx_handler was called. |
8a4eb573 JP |
369 | * |
370 | * rx_handlers are functions called from inside __netif_receive_skb(), to do | |
371 | * special processing of the skb, prior to delivery to protocol handlers. | |
372 | * | |
373 | * Currently, a net_device can only have a single rx_handler registered. Trying | |
374 | * to register a second rx_handler will return -EBUSY. | |
375 | * | |
376 | * To register a rx_handler on a net_device, use netdev_rx_handler_register(). | |
377 | * To unregister a rx_handler on a net_device, use | |
378 | * netdev_rx_handler_unregister(). | |
379 | * | |
380 | * Upon return, rx_handler is expected to tell __netif_receive_skb() what to | |
381 | * do with the skb. | |
382 | * | |
5e82b4b2 | 383 | * If the rx_handler consumed the skb in some way, it should return |
8a4eb573 | 384 | * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for |
5e82b4b2 | 385 | * the skb to be delivered in some other way. |
8a4eb573 JP |
386 | * |
387 | * If the rx_handler changed skb->dev, to divert the skb to another | |
388 | * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the | |
389 | * new device will be called if it exists. | |
390 | * | |
5e82b4b2 | 391 | * If the rx_handler decides the skb should be ignored, it should return |
8a4eb573 | 392 | * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that |
d93cf068 | 393 | * are registered on exact device (ptype->dev == skb->dev). |
8a4eb573 | 394 | * |
5e82b4b2 | 395 | * If the rx_handler didn't change skb->dev, but wants the skb to be normally |
8a4eb573 JP |
396 | * delivered, it should return RX_HANDLER_PASS. |
397 | * | |
398 | * A device without a registered rx_handler will behave as if rx_handler | |
399 | * returned RX_HANDLER_PASS. | |
400 | */ | |
401 | ||
402 | enum rx_handler_result { | |
403 | RX_HANDLER_CONSUMED, | |
404 | RX_HANDLER_ANOTHER, | |
405 | RX_HANDLER_EXACT, | |
406 | RX_HANDLER_PASS, | |
407 | }; | |
408 | typedef enum rx_handler_result rx_handler_result_t; | |
409 | typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb); | |
ab95bfe0 | 410 | |
f629d208 | 411 | void __napi_schedule(struct napi_struct *n); |
bc9ad166 | 412 | void __napi_schedule_irqoff(struct napi_struct *n); |
bea3348e | 413 | |
4d29515f | 414 | static inline bool napi_disable_pending(struct napi_struct *n) |
a0a46196 DM |
415 | { |
416 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
417 | } | |
418 | ||
39e6c820 | 419 | bool napi_schedule_prep(struct napi_struct *n); |
bea3348e SH |
420 | |
421 | /** | |
422 | * napi_schedule - schedule NAPI poll | |
5e82b4b2 | 423 | * @n: NAPI context |
bea3348e SH |
424 | * |
425 | * Schedule NAPI poll routine to be called if it is not already | |
426 | * running. | |
427 | */ | |
428 | static inline void napi_schedule(struct napi_struct *n) | |
429 | { | |
430 | if (napi_schedule_prep(n)) | |
431 | __napi_schedule(n); | |
432 | } | |
433 | ||
bc9ad166 ED |
434 | /** |
435 | * napi_schedule_irqoff - schedule NAPI poll | |
5e82b4b2 | 436 | * @n: NAPI context |
bc9ad166 ED |
437 | * |
438 | * Variant of napi_schedule(), assuming hard irqs are masked. | |
439 | */ | |
440 | static inline void napi_schedule_irqoff(struct napi_struct *n) | |
441 | { | |
442 | if (napi_schedule_prep(n)) | |
443 | __napi_schedule_irqoff(n); | |
444 | } | |
445 | ||
bfe13f54 | 446 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
4d29515f | 447 | static inline bool napi_reschedule(struct napi_struct *napi) |
bfe13f54 RD |
448 | { |
449 | if (napi_schedule_prep(napi)) { | |
450 | __napi_schedule(napi); | |
4d29515f | 451 | return true; |
bfe13f54 | 452 | } |
4d29515f | 453 | return false; |
bfe13f54 RD |
454 | } |
455 | ||
364b6055 | 456 | bool napi_complete_done(struct napi_struct *n, int work_done); |
bea3348e SH |
457 | /** |
458 | * napi_complete - NAPI processing complete | |
5e82b4b2 | 459 | * @n: NAPI context |
bea3348e SH |
460 | * |
461 | * Mark NAPI processing as complete. | |
3b47d303 | 462 | * Consider using napi_complete_done() instead. |
364b6055 | 463 | * Return false if device should avoid rearming interrupts. |
bea3348e | 464 | */ |
364b6055 | 465 | static inline bool napi_complete(struct napi_struct *n) |
3b47d303 ED |
466 | { |
467 | return napi_complete_done(n, 0); | |
468 | } | |
bea3348e | 469 | |
af12fa6e ET |
470 | /** |
471 | * napi_hash_del - remove a NAPI from global table | |
5e82b4b2 | 472 | * @napi: NAPI context |
af12fa6e | 473 | * |
5e82b4b2 | 474 | * Warning: caller must observe RCU grace period |
34cbe27e ED |
475 | * before freeing memory containing @napi, if |
476 | * this function returns true. | |
93d05d4a | 477 | * Note: core networking stack automatically calls it |
5e82b4b2 | 478 | * from netif_napi_del(). |
93d05d4a | 479 | * Drivers might want to call this helper to combine all |
5e82b4b2 | 480 | * the needed RCU grace periods into a single one. |
af12fa6e | 481 | */ |
34cbe27e | 482 | bool napi_hash_del(struct napi_struct *napi); |
af12fa6e | 483 | |
bea3348e SH |
484 | /** |
485 | * napi_disable - prevent NAPI from scheduling | |
5e82b4b2 | 486 | * @n: NAPI context |
bea3348e SH |
487 | * |
488 | * Stop NAPI from being scheduled on this context. | |
489 | * Waits till any outstanding processing completes. | |
490 | */ | |
3b47d303 | 491 | void napi_disable(struct napi_struct *n); |
bea3348e SH |
492 | |
493 | /** | |
494 | * napi_enable - enable NAPI scheduling | |
5e82b4b2 | 495 | * @n: NAPI context |
bea3348e SH |
496 | * |
497 | * Resume NAPI from being scheduled on this context. | |
498 | * Must be paired with napi_disable. | |
499 | */ | |
500 | static inline void napi_enable(struct napi_struct *n) | |
501 | { | |
502 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
4e857c58 | 503 | smp_mb__before_atomic(); |
bea3348e | 504 | clear_bit(NAPI_STATE_SCHED, &n->state); |
2d8bff12 | 505 | clear_bit(NAPI_STATE_NPSVC, &n->state); |
bea3348e SH |
506 | } |
507 | ||
c264c3de SH |
508 | /** |
509 | * napi_synchronize - wait until NAPI is not running | |
5e82b4b2 | 510 | * @n: NAPI context |
c264c3de SH |
511 | * |
512 | * Wait until NAPI is done being scheduled on this context. | |
513 | * Waits till any outstanding processing completes but | |
514 | * does not disable future activations. | |
515 | */ | |
516 | static inline void napi_synchronize(const struct napi_struct *n) | |
517 | { | |
facc432f AB |
518 | if (IS_ENABLED(CONFIG_SMP)) |
519 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
520 | msleep(1); | |
521 | else | |
522 | barrier(); | |
c264c3de | 523 | } |
c264c3de | 524 | |
d94d9fee | 525 | enum netdev_queue_state_t { |
73466498 TH |
526 | __QUEUE_STATE_DRV_XOFF, |
527 | __QUEUE_STATE_STACK_XOFF, | |
c3f26a26 | 528 | __QUEUE_STATE_FROZEN, |
79d16385 | 529 | }; |
8e2f1a63 DB |
530 | |
531 | #define QUEUE_STATE_DRV_XOFF (1 << __QUEUE_STATE_DRV_XOFF) | |
532 | #define QUEUE_STATE_STACK_XOFF (1 << __QUEUE_STATE_STACK_XOFF) | |
533 | #define QUEUE_STATE_FROZEN (1 << __QUEUE_STATE_FROZEN) | |
534 | ||
535 | #define QUEUE_STATE_ANY_XOFF (QUEUE_STATE_DRV_XOFF | QUEUE_STATE_STACK_XOFF) | |
536 | #define QUEUE_STATE_ANY_XOFF_OR_FROZEN (QUEUE_STATE_ANY_XOFF | \ | |
537 | QUEUE_STATE_FROZEN) | |
538 | #define QUEUE_STATE_DRV_XOFF_OR_FROZEN (QUEUE_STATE_DRV_XOFF | \ | |
539 | QUEUE_STATE_FROZEN) | |
540 | ||
73466498 TH |
541 | /* |
542 | * __QUEUE_STATE_DRV_XOFF is used by drivers to stop the transmit queue. The | |
543 | * netif_tx_* functions below are used to manipulate this flag. The | |
544 | * __QUEUE_STATE_STACK_XOFF flag is used by the stack to stop the transmit | |
545 | * queue independently. The netif_xmit_*stopped functions below are called | |
546 | * to check if the queue has been stopped by the driver or stack (either | |
547 | * of the XOFF bits are set in the state). Drivers should not need to call | |
548 | * netif_xmit*stopped functions, they should only be using netif_tx_*. | |
549 | */ | |
79d16385 | 550 | |
bb949fbd | 551 | struct netdev_queue { |
6a321cb3 | 552 | /* |
5e82b4b2 | 553 | * read-mostly part |
6a321cb3 | 554 | */ |
bb949fbd | 555 | struct net_device *dev; |
46e5da40 | 556 | struct Qdisc __rcu *qdisc; |
b0e1e646 | 557 | struct Qdisc *qdisc_sleeping; |
ccf5ff69 | 558 | #ifdef CONFIG_SYSFS |
1d24eb48 TH |
559 | struct kobject kobj; |
560 | #endif | |
f2cd2d3e ED |
561 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
562 | int numa_node; | |
563 | #endif | |
c0ef079c FW |
564 | unsigned long tx_maxrate; |
565 | /* | |
566 | * Number of TX timeouts for this queue | |
567 | * (/sys/class/net/DEV/Q/trans_timeout) | |
568 | */ | |
569 | unsigned long trans_timeout; | |
6a321cb3 | 570 | /* |
5e82b4b2 | 571 | * write-mostly part |
6a321cb3 ED |
572 | */ |
573 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
574 | int xmit_lock_owner; | |
9d21493b | 575 | /* |
9b36627a | 576 | * Time (in jiffies) of last Tx |
9d21493b ED |
577 | */ |
578 | unsigned long trans_start; | |
ccf5ff69 | 579 | |
114cf580 TH |
580 | unsigned long state; |
581 | ||
582 | #ifdef CONFIG_BQL | |
583 | struct dql dql; | |
584 | #endif | |
e8a0464c | 585 | } ____cacheline_aligned_in_smp; |
bb949fbd | 586 | |
f2cd2d3e ED |
587 | static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) |
588 | { | |
589 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
590 | return q->numa_node; | |
591 | #else | |
b236da69 | 592 | return NUMA_NO_NODE; |
f2cd2d3e ED |
593 | #endif |
594 | } | |
595 | ||
596 | static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node) | |
597 | { | |
598 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
599 | q->numa_node = node; | |
600 | #endif | |
601 | } | |
602 | ||
df334545 | 603 | #ifdef CONFIG_RPS |
0a9627f2 TH |
604 | /* |
605 | * This structure holds an RPS map which can be of variable length. The | |
606 | * map is an array of CPUs. | |
607 | */ | |
608 | struct rps_map { | |
609 | unsigned int len; | |
610 | struct rcu_head rcu; | |
611 | u16 cpus[0]; | |
612 | }; | |
60b778ce | 613 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + ((_num) * sizeof(u16))) |
0a9627f2 | 614 | |
fec5e652 | 615 | /* |
c445477d BH |
616 | * The rps_dev_flow structure contains the mapping of a flow to a CPU, the |
617 | * tail pointer for that CPU's input queue at the time of last enqueue, and | |
618 | * a hardware filter index. | |
fec5e652 TH |
619 | */ |
620 | struct rps_dev_flow { | |
621 | u16 cpu; | |
c445477d | 622 | u16 filter; |
fec5e652 TH |
623 | unsigned int last_qtail; |
624 | }; | |
c445477d | 625 | #define RPS_NO_FILTER 0xffff |
fec5e652 TH |
626 | |
627 | /* | |
628 | * The rps_dev_flow_table structure contains a table of flow mappings. | |
629 | */ | |
630 | struct rps_dev_flow_table { | |
631 | unsigned int mask; | |
632 | struct rcu_head rcu; | |
fec5e652 TH |
633 | struct rps_dev_flow flows[0]; |
634 | }; | |
635 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ | |
60b778ce | 636 | ((_num) * sizeof(struct rps_dev_flow))) |
fec5e652 TH |
637 | |
638 | /* | |
639 | * The rps_sock_flow_table contains mappings of flows to the last CPU | |
640 | * on which they were processed by the application (set in recvmsg). | |
5e82b4b2 BH |
641 | * Each entry is a 32bit value. Upper part is the high-order bits |
642 | * of flow hash, lower part is CPU number. | |
567e4b79 | 643 | * rps_cpu_mask is used to partition the space, depending on number of |
5e82b4b2 BH |
644 | * possible CPUs : rps_cpu_mask = roundup_pow_of_two(nr_cpu_ids) - 1 |
645 | * For example, if 64 CPUs are possible, rps_cpu_mask = 0x3f, | |
567e4b79 | 646 | * meaning we use 32-6=26 bits for the hash. |
fec5e652 TH |
647 | */ |
648 | struct rps_sock_flow_table { | |
567e4b79 | 649 | u32 mask; |
93c1af6c ED |
650 | |
651 | u32 ents[0] ____cacheline_aligned_in_smp; | |
fec5e652 | 652 | }; |
567e4b79 | 653 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (offsetof(struct rps_sock_flow_table, ents[_num])) |
fec5e652 TH |
654 | |
655 | #define RPS_NO_CPU 0xffff | |
656 | ||
567e4b79 ED |
657 | extern u32 rps_cpu_mask; |
658 | extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; | |
659 | ||
fec5e652 TH |
660 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, |
661 | u32 hash) | |
662 | { | |
663 | if (table && hash) { | |
567e4b79 ED |
664 | unsigned int index = hash & table->mask; |
665 | u32 val = hash & ~rps_cpu_mask; | |
fec5e652 | 666 | |
5e82b4b2 | 667 | /* We only give a hint, preemption can change CPU under us */ |
567e4b79 | 668 | val |= raw_smp_processor_id(); |
fec5e652 | 669 | |
567e4b79 ED |
670 | if (table->ents[index] != val) |
671 | table->ents[index] = val; | |
fec5e652 TH |
672 | } |
673 | } | |
674 | ||
c445477d | 675 | #ifdef CONFIG_RFS_ACCEL |
f629d208 JP |
676 | bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, u32 flow_id, |
677 | u16 filter_id); | |
c445477d | 678 | #endif |
a953be53 | 679 | #endif /* CONFIG_RPS */ |
c445477d | 680 | |
0a9627f2 TH |
681 | /* This structure contains an instance of an RX queue. */ |
682 | struct netdev_rx_queue { | |
a953be53 | 683 | #ifdef CONFIG_RPS |
6e3f7faf ED |
684 | struct rps_map __rcu *rps_map; |
685 | struct rps_dev_flow_table __rcu *rps_flow_table; | |
a953be53 | 686 | #endif |
6e3f7faf | 687 | struct kobject kobj; |
fe822240 | 688 | struct net_device *dev; |
0a9627f2 | 689 | } ____cacheline_aligned_in_smp; |
a953be53 MD |
690 | |
691 | /* | |
692 | * RX queue sysfs structures and functions. | |
693 | */ | |
694 | struct rx_queue_attribute { | |
695 | struct attribute attr; | |
696 | ssize_t (*show)(struct netdev_rx_queue *queue, | |
697 | struct rx_queue_attribute *attr, char *buf); | |
698 | ssize_t (*store)(struct netdev_rx_queue *queue, | |
699 | struct rx_queue_attribute *attr, const char *buf, size_t len); | |
700 | }; | |
d314774c | 701 | |
bf264145 TH |
702 | #ifdef CONFIG_XPS |
703 | /* | |
704 | * This structure holds an XPS map which can be of variable length. The | |
705 | * map is an array of queues. | |
706 | */ | |
707 | struct xps_map { | |
708 | unsigned int len; | |
709 | unsigned int alloc_len; | |
710 | struct rcu_head rcu; | |
711 | u16 queues[0]; | |
712 | }; | |
60b778ce | 713 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + ((_num) * sizeof(u16))) |
c59f419b HD |
714 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_ALIGN(offsetof(struct xps_map, queues[1])) \ |
715 | - sizeof(struct xps_map)) / sizeof(u16)) | |
bf264145 TH |
716 | |
717 | /* | |
718 | * This structure holds all XPS maps for device. Maps are indexed by CPU. | |
719 | */ | |
720 | struct xps_dev_maps { | |
721 | struct rcu_head rcu; | |
a4177869 | 722 | struct xps_map __rcu *cpu_map[0]; |
bf264145 | 723 | }; |
184c449f AD |
724 | #define XPS_DEV_MAPS_SIZE(_tcs) (sizeof(struct xps_dev_maps) + \ |
725 | (nr_cpu_ids * (_tcs) * sizeof(struct xps_map *))) | |
bf264145 TH |
726 | #endif /* CONFIG_XPS */ |
727 | ||
4f57c087 JF |
728 | #define TC_MAX_QUEUE 16 |
729 | #define TC_BITMASK 15 | |
730 | /* HW offloaded queuing disciplines txq count and offset maps */ | |
731 | struct netdev_tc_txq { | |
732 | u16 count; | |
733 | u16 offset; | |
734 | }; | |
735 | ||
68bad94e NP |
736 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
737 | /* | |
738 | * This structure is to hold information about the device | |
739 | * configured to run FCoE protocol stack. | |
740 | */ | |
741 | struct netdev_fcoe_hbainfo { | |
742 | char manufacturer[64]; | |
743 | char serial_number[64]; | |
744 | char hardware_version[64]; | |
745 | char driver_version[64]; | |
746 | char optionrom_version[64]; | |
747 | char firmware_version[64]; | |
748 | char model[256]; | |
749 | char model_description[256]; | |
750 | }; | |
751 | #endif | |
752 | ||
02637fce | 753 | #define MAX_PHYS_ITEM_ID_LEN 32 |
66b52b0d | 754 | |
02637fce JP |
755 | /* This structure holds a unique identifier to identify some |
756 | * physical item (port for example) used by a netdevice. | |
66b52b0d | 757 | */ |
02637fce JP |
758 | struct netdev_phys_item_id { |
759 | unsigned char id[MAX_PHYS_ITEM_ID_LEN]; | |
66b52b0d JP |
760 | unsigned char id_len; |
761 | }; | |
762 | ||
d754f98b SF |
763 | static inline bool netdev_phys_item_id_same(struct netdev_phys_item_id *a, |
764 | struct netdev_phys_item_id *b) | |
765 | { | |
766 | return a->id_len == b->id_len && | |
767 | memcmp(a->id, b->id, a->id_len) == 0; | |
768 | } | |
769 | ||
99932d4f DB |
770 | typedef u16 (*select_queue_fallback_t)(struct net_device *dev, |
771 | struct sk_buff *skb); | |
772 | ||
a1b7c5fd | 773 | /* These structures hold the attributes of qdisc and classifiers |
16e5cc64 JF |
774 | * that are being passed to the netdevice through the setup_tc op. |
775 | */ | |
776 | enum { | |
777 | TC_SETUP_MQPRIO, | |
a1b7c5fd | 778 | TC_SETUP_CLSU32, |
5b33f488 | 779 | TC_SETUP_CLSFLOWER, |
b87f7936 | 780 | TC_SETUP_MATCHALL, |
332ae8e2 | 781 | TC_SETUP_CLSBPF, |
16e5cc64 JF |
782 | }; |
783 | ||
a1b7c5fd JF |
784 | struct tc_cls_u32_offload; |
785 | ||
16e5cc64 JF |
786 | struct tc_to_netdev { |
787 | unsigned int type; | |
788 | union { | |
789 | u8 tc; | |
a1b7c5fd | 790 | struct tc_cls_u32_offload *cls_u32; |
5b33f488 | 791 | struct tc_cls_flower_offload *cls_flower; |
b87f7936 | 792 | struct tc_cls_matchall_offload *cls_mall; |
332ae8e2 | 793 | struct tc_cls_bpf_offload *cls_bpf; |
16e5cc64 | 794 | }; |
7091d8c7 | 795 | bool egress_dev; |
16e5cc64 JF |
796 | }; |
797 | ||
a7862b45 BB |
798 | /* These structures hold the attributes of xdp state that are being passed |
799 | * to the netdevice through the xdp op. | |
800 | */ | |
801 | enum xdp_netdev_command { | |
802 | /* Set or clear a bpf program used in the earliest stages of packet | |
803 | * rx. The prog will have been loaded as BPF_PROG_TYPE_XDP. The callee | |
804 | * is responsible for calling bpf_prog_put on any old progs that are | |
805 | * stored. In case of error, the callee need not release the new prog | |
806 | * reference, but on success it takes ownership and must bpf_prog_put | |
807 | * when it is no longer used. | |
808 | */ | |
809 | XDP_SETUP_PROG, | |
810 | /* Check if a bpf program is set on the device. The callee should | |
811 | * return true if a program is currently attached and running. | |
812 | */ | |
813 | XDP_QUERY_PROG, | |
814 | }; | |
815 | ||
816 | struct netdev_xdp { | |
817 | enum xdp_netdev_command command; | |
818 | union { | |
819 | /* XDP_SETUP_PROG */ | |
820 | struct bpf_prog *prog; | |
821 | /* XDP_QUERY_PROG */ | |
822 | bool prog_attached; | |
823 | }; | |
824 | }; | |
16e5cc64 | 825 | |
d314774c SH |
826 | /* |
827 | * This structure defines the management hooks for network devices. | |
00829823 SH |
828 | * The following hooks can be defined; unless noted otherwise, they are |
829 | * optional and can be filled with a null pointer. | |
d314774c SH |
830 | * |
831 | * int (*ndo_init)(struct net_device *dev); | |
5e82b4b2 BH |
832 | * This function is called once when a network device is registered. |
833 | * The network device can use this for any late stage initialization | |
834 | * or semantic validation. It can fail with an error code which will | |
835 | * be propagated back to register_netdev. | |
d314774c SH |
836 | * |
837 | * void (*ndo_uninit)(struct net_device *dev); | |
838 | * This function is called when device is unregistered or when registration | |
839 | * fails. It is not called if init fails. | |
840 | * | |
841 | * int (*ndo_open)(struct net_device *dev); | |
5e82b4b2 | 842 | * This function is called when a network device transitions to the up |
d314774c SH |
843 | * state. |
844 | * | |
845 | * int (*ndo_stop)(struct net_device *dev); | |
5e82b4b2 | 846 | * This function is called when a network device transitions to the down |
d314774c SH |
847 | * state. |
848 | * | |
dc1f8bf6 SH |
849 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
850 | * struct net_device *dev); | |
00829823 | 851 | * Called when a packet needs to be transmitted. |
e79d8429 RR |
852 | * Returns NETDEV_TX_OK. Can return NETDEV_TX_BUSY, but you should stop |
853 | * the queue before that can happen; it's for obsolete devices and weird | |
854 | * corner cases, but the stack really does a non-trivial amount | |
855 | * of useless work if you return NETDEV_TX_BUSY. | |
5e82b4b2 | 856 | * Required; cannot be NULL. |
00829823 | 857 | * |
1a2a1444 DM |
858 | * netdev_features_t (*ndo_features_check)(struct sk_buff *skb, |
859 | * struct net_device *dev | |
860 | * netdev_features_t features); | |
861 | * Called by core transmit path to determine if device is capable of | |
862 | * performing offload operations on a given packet. This is to give | |
863 | * the device an opportunity to implement any restrictions that cannot | |
864 | * be otherwise expressed by feature flags. The check is called with | |
865 | * the set of features that the stack has calculated and it returns | |
866 | * those the driver believes to be appropriate. | |
cdba756f | 867 | * |
f663dd9a | 868 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb, |
99932d4f | 869 | * void *accel_priv, select_queue_fallback_t fallback); |
5e82b4b2 | 870 | * Called to decide which queue to use when device supports multiple |
00829823 SH |
871 | * transmit queues. |
872 | * | |
d314774c SH |
873 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
874 | * This function is called to allow device receiver to make | |
5e82b4b2 | 875 | * changes to configuration when multicast or promiscuous is enabled. |
d314774c SH |
876 | * |
877 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
878 | * This function is called device changes address list filtering. | |
01789349 | 879 | * If driver handles unicast address filtering, it should set |
5e82b4b2 | 880 | * IFF_UNICAST_FLT in its priv_flags. |
d314774c SH |
881 | * |
882 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
883 | * This function is called when the Media Access Control address | |
37b607c5 | 884 | * needs to be changed. If this interface is not defined, the |
5e82b4b2 | 885 | * MAC address can not be changed. |
d314774c SH |
886 | * |
887 | * int (*ndo_validate_addr)(struct net_device *dev); | |
888 | * Test if Media Access Control address is valid for the device. | |
889 | * | |
890 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
5e82b4b2 BH |
891 | * Called when a user requests an ioctl which can't be handled by |
892 | * the generic interface code. If not defined ioctls return | |
d314774c SH |
893 | * not supported error code. |
894 | * | |
895 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); | |
896 | * Used to set network devices bus interface parameters. This interface | |
5e82b4b2 | 897 | * is retained for legacy reasons; new devices should use the bus |
d314774c SH |
898 | * interface (PCI) for low level management. |
899 | * | |
900 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
901 | * Called when a user wants to change the Maximum Transfer Unit | |
902 | * of a device. If not defined, any request to change MTU will | |
903 | * will return an error. | |
904 | * | |
00829823 | 905 | * void (*ndo_tx_timeout)(struct net_device *dev); |
5e82b4b2 | 906 | * Callback used when the transmitter has not made any progress |
d314774c SH |
907 | * for dev->watchdog ticks. |
908 | * | |
bc1f4470 | 909 | * void (*ndo_get_stats64)(struct net_device *dev, |
910 | * struct rtnl_link_stats64 *storage); | |
d308e38f | 911 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
d314774c | 912 | * Called when a user wants to get the network device usage |
be1f3c2c | 913 | * statistics. Drivers must do one of the following: |
3cfde79c BH |
914 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
915 | * rtnl_link_stats64 structure passed by the caller. | |
82695d9b | 916 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
be1f3c2c BH |
917 | * (which should normally be dev->stats) and return a pointer to |
918 | * it. The structure may be changed asynchronously only if each | |
919 | * field is written atomically. | |
920 | * 3. Update dev->stats asynchronously and atomically, and define | |
921 | * neither operation. | |
d314774c | 922 | * |
3df5b3c6 | 923 | * bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id) |
2c9d85d4 NF |
924 | * Return true if this device supports offload stats of this attr_id. |
925 | * | |
926 | * int (*ndo_get_offload_stats)(int attr_id, const struct net_device *dev, | |
927 | * void *attr_data) | |
928 | * Get statistics for offload operations by attr_id. Write it into the | |
929 | * attr_data pointer. | |
930 | * | |
5d632cb7 | 931 | * int (*ndo_vlan_rx_add_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 932 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 933 | * VLAN id is registered. |
d314774c | 934 | * |
5d632cb7 | 935 | * int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 936 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 937 | * VLAN id is unregistered. |
d314774c SH |
938 | * |
939 | * void (*ndo_poll_controller)(struct net_device *dev); | |
95c26df8 WM |
940 | * |
941 | * SR-IOV management functions. | |
942 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); | |
79aab093 MS |
943 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, |
944 | * u8 qos, __be16 proto); | |
ed616689 SC |
945 | * int (*ndo_set_vf_rate)(struct net_device *dev, int vf, int min_tx_rate, |
946 | * int max_tx_rate); | |
5f8444a3 | 947 | * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting); |
dd461d6a | 948 | * int (*ndo_set_vf_trust)(struct net_device *dev, int vf, bool setting); |
95c26df8 WM |
949 | * int (*ndo_get_vf_config)(struct net_device *dev, |
950 | * int vf, struct ifla_vf_info *ivf); | |
1d8faf48 | 951 | * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state); |
57b61080 SF |
952 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
953 | * struct nlattr *port[]); | |
01a3d796 VZ |
954 | * |
955 | * Enable or disable the VF ability to query its RSS Redirection Table and | |
956 | * Hash Key. This is needed since on some devices VF share this information | |
5e82b4b2 | 957 | * with PF and querying it may introduce a theoretical security risk. |
01a3d796 | 958 | * int (*ndo_set_vf_rss_query_en)(struct net_device *dev, int vf, bool setting); |
57b61080 | 959 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); |
6a4bc2b4 FF |
960 | * int (*ndo_setup_tc)(struct net_device *dev, u32 handle, |
961 | * __be16 protocol, struct tc_to_netdev *tc); | |
962 | * Called to setup any 'tc' scheduler, classifier or action on @dev. | |
963 | * This is always called from the stack with the rtnl lock held and netif | |
964 | * tx queues stopped. This allows the netdevice to perform queue | |
965 | * management safely. | |
c445477d | 966 | * |
e9bce845 YZ |
967 | * Fiber Channel over Ethernet (FCoE) offload functions. |
968 | * int (*ndo_fcoe_enable)(struct net_device *dev); | |
969 | * Called when the FCoE protocol stack wants to start using LLD for FCoE | |
970 | * so the underlying device can perform whatever needed configuration or | |
971 | * initialization to support acceleration of FCoE traffic. | |
972 | * | |
973 | * int (*ndo_fcoe_disable)(struct net_device *dev); | |
974 | * Called when the FCoE protocol stack wants to stop using LLD for FCoE | |
975 | * so the underlying device can perform whatever needed clean-ups to | |
976 | * stop supporting acceleration of FCoE traffic. | |
977 | * | |
978 | * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid, | |
979 | * struct scatterlist *sgl, unsigned int sgc); | |
980 | * Called when the FCoE Initiator wants to initialize an I/O that | |
981 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
982 | * perform necessary setup and returns 1 to indicate the device is set up | |
983 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
984 | * | |
985 | * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); | |
986 | * Called when the FCoE Initiator/Target is done with the DDPed I/O as | |
987 | * indicated by the FC exchange id 'xid', so the underlying device can | |
988 | * clean up and reuse resources for later DDP requests. | |
989 | * | |
990 | * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid, | |
991 | * struct scatterlist *sgl, unsigned int sgc); | |
992 | * Called when the FCoE Target wants to initialize an I/O that | |
993 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
994 | * perform necessary setup and returns 1 to indicate the device is set up | |
995 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
996 | * | |
68bad94e NP |
997 | * int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
998 | * struct netdev_fcoe_hbainfo *hbainfo); | |
999 | * Called when the FCoE Protocol stack wants information on the underlying | |
1000 | * device. This information is utilized by the FCoE protocol stack to | |
1001 | * register attributes with Fiber Channel management service as per the | |
1002 | * FC-GS Fabric Device Management Information(FDMI) specification. | |
1003 | * | |
e9bce845 YZ |
1004 | * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); |
1005 | * Called when the underlying device wants to override default World Wide | |
1006 | * Name (WWN) generation mechanism in FCoE protocol stack to pass its own | |
1007 | * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE | |
1008 | * protocol stack to use. | |
1009 | * | |
c445477d BH |
1010 | * RFS acceleration. |
1011 | * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, | |
1012 | * u16 rxq_index, u32 flow_id); | |
1013 | * Set hardware filter for RFS. rxq_index is the target queue index; | |
1014 | * flow_id is a flow ID to be passed to rps_may_expire_flow() later. | |
1015 | * Return the filter ID on success, or a negative error code. | |
fbaec0ea | 1016 | * |
8b98a70c | 1017 | * Slave management functions (for bridge, bonding, etc). |
fbaec0ea JP |
1018 | * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); |
1019 | * Called to make another netdev an underling. | |
1020 | * | |
1021 | * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); | |
1022 | * Called to release previously enslaved netdev. | |
5455c699 MM |
1023 | * |
1024 | * Feature/offload setting functions. | |
1a2a1444 DM |
1025 | * netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1026 | * netdev_features_t features); | |
1027 | * Adjusts the requested feature flags according to device-specific | |
1028 | * constraints, and returns the resulting flags. Must not modify | |
1029 | * the device state. | |
1030 | * | |
c8f44aff | 1031 | * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); |
5455c699 MM |
1032 | * Called to update device configuration to new features. Passed |
1033 | * feature set might be less than what was returned by ndo_fix_features()). | |
1034 | * Must return >0 or -errno if it changed dev->features itself. | |
1035 | * | |
edc7d573 | 1036 | * int (*ndo_fdb_add)(struct ndmsg *ndm, struct nlattr *tb[], |
1037 | * struct net_device *dev, | |
f6f6424b | 1038 | * const unsigned char *addr, u16 vid, u16 flags) |
77162022 | 1039 | * Adds an FDB entry to dev for addr. |
1690be63 VY |
1040 | * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[], |
1041 | * struct net_device *dev, | |
f6f6424b | 1042 | * const unsigned char *addr, u16 vid) |
77162022 JF |
1043 | * Deletes the FDB entry from dev coresponding to addr. |
1044 | * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb, | |
5d5eacb3 | 1045 | * struct net_device *dev, struct net_device *filter_dev, |
d297653d | 1046 | * int *idx) |
77162022 JF |
1047 | * Used to add FDB entries to dump requests. Implementers should add |
1048 | * entries to skb and update idx with the number of entries. | |
e5a55a89 | 1049 | * |
ad41faa8 ND |
1050 | * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh, |
1051 | * u16 flags) | |
e5a55a89 | 1052 | * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, |
46c264da ND |
1053 | * struct net_device *dev, u32 filter_mask, |
1054 | * int nlflags) | |
ad41faa8 ND |
1055 | * int (*ndo_bridge_dellink)(struct net_device *dev, struct nlmsghdr *nlh, |
1056 | * u16 flags); | |
4bf84c35 JP |
1057 | * |
1058 | * int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier); | |
1059 | * Called to change device carrier. Soft-devices (like dummy, team, etc) | |
1060 | * which do not represent real hardware may define this to allow their | |
1061 | * userspace components to manage their virtual carrier state. Devices | |
1062 | * that determine carrier state from physical hardware properties (eg | |
1063 | * network cables) or protocol-dependent mechanisms (eg | |
1064 | * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function. | |
66b52b0d JP |
1065 | * |
1066 | * int (*ndo_get_phys_port_id)(struct net_device *dev, | |
02637fce | 1067 | * struct netdev_phys_item_id *ppid); |
66b52b0d JP |
1068 | * Called to get ID of physical port of this device. If driver does |
1069 | * not implement this, it is assumed that the hw is not able to have | |
1070 | * multiple net devices on single physical port. | |
53cf5275 | 1071 | * |
7c46a640 AD |
1072 | * void (*ndo_udp_tunnel_add)(struct net_device *dev, |
1073 | * struct udp_tunnel_info *ti); | |
1074 | * Called by UDP tunnel to notify a driver about the UDP port and socket | |
1075 | * address family that a UDP tunnel is listnening to. It is called only | |
1076 | * when a new port starts listening. The operation is protected by the | |
1077 | * RTNL. | |
1078 | * | |
1079 | * void (*ndo_udp_tunnel_del)(struct net_device *dev, | |
1080 | * struct udp_tunnel_info *ti); | |
1081 | * Called by UDP tunnel to notify the driver about a UDP port and socket | |
1082 | * address family that the UDP tunnel is not listening to anymore. The | |
1083 | * operation is protected by the RTNL. | |
1084 | * | |
a6cc0cfa JF |
1085 | * void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1086 | * struct net_device *dev) | |
1087 | * Called by upper layer devices to accelerate switching or other | |
1088 | * station functionality into hardware. 'pdev is the lowerdev | |
1089 | * to use for the offload and 'dev' is the net device that will | |
1090 | * back the offload. Returns a pointer to the private structure | |
1091 | * the upper layer will maintain. | |
1092 | * void (*ndo_dfwd_del_station)(struct net_device *pdev, void *priv) | |
1093 | * Called by upper layer device to delete the station created | |
1094 | * by 'ndo_dfwd_add_station'. 'pdev' is the net device backing | |
1095 | * the station and priv is the structure returned by the add | |
1096 | * operation. | |
1097 | * netdev_tx_t (*ndo_dfwd_start_xmit)(struct sk_buff *skb, | |
1098 | * struct net_device *dev, | |
1099 | * void *priv); | |
1100 | * Callback to use for xmit over the accelerated station. This | |
1101 | * is used in place of ndo_start_xmit on accelerated net | |
1102 | * devices. | |
822b3b2e JF |
1103 | * int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1104 | * int queue_index, u32 maxrate); | |
1105 | * Called when a user wants to set a max-rate limitation of specific | |
1106 | * TX queue. | |
a54acb3a ND |
1107 | * int (*ndo_get_iflink)(const struct net_device *dev); |
1108 | * Called to get the iflink value of this device. | |
d746d707 | 1109 | * void (*ndo_change_proto_down)(struct net_device *dev, |
5e82b4b2 | 1110 | * bool proto_down); |
d746d707 AK |
1111 | * This function is used to pass protocol port error state information |
1112 | * to the switch driver. The switch driver can react to the proto_down | |
1113 | * by doing a phys down on the associated switch port. | |
fc4099f1 PS |
1114 | * int (*ndo_fill_metadata_dst)(struct net_device *dev, struct sk_buff *skb); |
1115 | * This function is used to get egress tunnel information for given skb. | |
1116 | * This is useful for retrieving outer tunnel header parameters while | |
1117 | * sampling packet. | |
871b642a PA |
1118 | * void (*ndo_set_rx_headroom)(struct net_device *dev, int needed_headroom); |
1119 | * This function is used to specify the headroom that the skb must | |
1120 | * consider when allocation skb during packet reception. Setting | |
1121 | * appropriate rx headroom value allows avoiding skb head copy on | |
5e82b4b2 | 1122 | * forward. Setting a negative value resets the rx headroom to the |
871b642a | 1123 | * default value. |
a7862b45 BB |
1124 | * int (*ndo_xdp)(struct net_device *dev, struct netdev_xdp *xdp); |
1125 | * This function is used to set or query state related to XDP on the | |
1126 | * netdevice. See definition of enum xdp_netdev_command for details. | |
d746d707 | 1127 | * |
d314774c SH |
1128 | */ |
1129 | struct net_device_ops { | |
1130 | int (*ndo_init)(struct net_device *dev); | |
1131 | void (*ndo_uninit)(struct net_device *dev); | |
1132 | int (*ndo_open)(struct net_device *dev); | |
1133 | int (*ndo_stop)(struct net_device *dev); | |
cdba756f ED |
1134 | netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
1135 | struct net_device *dev); | |
1136 | netdev_features_t (*ndo_features_check)(struct sk_buff *skb, | |
1137 | struct net_device *dev, | |
1138 | netdev_features_t features); | |
00829823 | 1139 | u16 (*ndo_select_queue)(struct net_device *dev, |
f663dd9a | 1140 | struct sk_buff *skb, |
99932d4f DB |
1141 | void *accel_priv, |
1142 | select_queue_fallback_t fallback); | |
d314774c SH |
1143 | void (*ndo_change_rx_flags)(struct net_device *dev, |
1144 | int flags); | |
d314774c | 1145 | void (*ndo_set_rx_mode)(struct net_device *dev); |
d314774c SH |
1146 | int (*ndo_set_mac_address)(struct net_device *dev, |
1147 | void *addr); | |
d314774c | 1148 | int (*ndo_validate_addr)(struct net_device *dev); |
d314774c SH |
1149 | int (*ndo_do_ioctl)(struct net_device *dev, |
1150 | struct ifreq *ifr, int cmd); | |
d314774c SH |
1151 | int (*ndo_set_config)(struct net_device *dev, |
1152 | struct ifmap *map); | |
00829823 SH |
1153 | int (*ndo_change_mtu)(struct net_device *dev, |
1154 | int new_mtu); | |
1155 | int (*ndo_neigh_setup)(struct net_device *dev, | |
1156 | struct neigh_parms *); | |
d314774c SH |
1157 | void (*ndo_tx_timeout) (struct net_device *dev); |
1158 | ||
bc1f4470 | 1159 | void (*ndo_get_stats64)(struct net_device *dev, |
1160 | struct rtnl_link_stats64 *storage); | |
3df5b3c6 | 1161 | bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id); |
2c9d85d4 NF |
1162 | int (*ndo_get_offload_stats)(int attr_id, |
1163 | const struct net_device *dev, | |
1164 | void *attr_data); | |
d314774c SH |
1165 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
1166 | ||
8e586137 | 1167 | int (*ndo_vlan_rx_add_vid)(struct net_device *dev, |
80d5c368 | 1168 | __be16 proto, u16 vid); |
8e586137 | 1169 | int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, |
80d5c368 | 1170 | __be16 proto, u16 vid); |
d314774c | 1171 | #ifdef CONFIG_NET_POLL_CONTROLLER |
d314774c | 1172 | void (*ndo_poll_controller)(struct net_device *dev); |
4247e161 | 1173 | int (*ndo_netpoll_setup)(struct net_device *dev, |
a8779ec1 | 1174 | struct netpoll_info *info); |
0e34e931 | 1175 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
d314774c | 1176 | #endif |
95c26df8 WM |
1177 | int (*ndo_set_vf_mac)(struct net_device *dev, |
1178 | int queue, u8 *mac); | |
1179 | int (*ndo_set_vf_vlan)(struct net_device *dev, | |
79aab093 MS |
1180 | int queue, u16 vlan, |
1181 | u8 qos, __be16 proto); | |
ed616689 SC |
1182 | int (*ndo_set_vf_rate)(struct net_device *dev, |
1183 | int vf, int min_tx_rate, | |
1184 | int max_tx_rate); | |
5f8444a3 GR |
1185 | int (*ndo_set_vf_spoofchk)(struct net_device *dev, |
1186 | int vf, bool setting); | |
dd461d6a HS |
1187 | int (*ndo_set_vf_trust)(struct net_device *dev, |
1188 | int vf, bool setting); | |
95c26df8 WM |
1189 | int (*ndo_get_vf_config)(struct net_device *dev, |
1190 | int vf, | |
1191 | struct ifla_vf_info *ivf); | |
1d8faf48 RE |
1192 | int (*ndo_set_vf_link_state)(struct net_device *dev, |
1193 | int vf, int link_state); | |
3b766cd8 EBE |
1194 | int (*ndo_get_vf_stats)(struct net_device *dev, |
1195 | int vf, | |
1196 | struct ifla_vf_stats | |
1197 | *vf_stats); | |
57b61080 SF |
1198 | int (*ndo_set_vf_port)(struct net_device *dev, |
1199 | int vf, | |
1200 | struct nlattr *port[]); | |
1201 | int (*ndo_get_vf_port)(struct net_device *dev, | |
1202 | int vf, struct sk_buff *skb); | |
cc8e27cc EC |
1203 | int (*ndo_set_vf_guid)(struct net_device *dev, |
1204 | int vf, u64 guid, | |
1205 | int guid_type); | |
01a3d796 VZ |
1206 | int (*ndo_set_vf_rss_query_en)( |
1207 | struct net_device *dev, | |
1208 | int vf, bool setting); | |
16e5cc64 JF |
1209 | int (*ndo_setup_tc)(struct net_device *dev, |
1210 | u32 handle, | |
1211 | __be16 protocol, | |
1212 | struct tc_to_netdev *tc); | |
d11ead75 | 1213 | #if IS_ENABLED(CONFIG_FCOE) |
cb454399 YZ |
1214 | int (*ndo_fcoe_enable)(struct net_device *dev); |
1215 | int (*ndo_fcoe_disable)(struct net_device *dev); | |
4d288d57 YZ |
1216 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
1217 | u16 xid, | |
1218 | struct scatterlist *sgl, | |
1219 | unsigned int sgc); | |
1220 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
1221 | u16 xid); | |
6247e086 YZ |
1222 | int (*ndo_fcoe_ddp_target)(struct net_device *dev, |
1223 | u16 xid, | |
1224 | struct scatterlist *sgl, | |
1225 | unsigned int sgc); | |
68bad94e NP |
1226 | int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1227 | struct netdev_fcoe_hbainfo *hbainfo); | |
3c9c36bc BPG |
1228 | #endif |
1229 | ||
d11ead75 | 1230 | #if IS_ENABLED(CONFIG_LIBFCOE) |
df5c7945 YZ |
1231 | #define NETDEV_FCOE_WWNN 0 |
1232 | #define NETDEV_FCOE_WWPN 1 | |
1233 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, | |
1234 | u64 *wwn, int type); | |
4d288d57 | 1235 | #endif |
3c9c36bc | 1236 | |
c445477d BH |
1237 | #ifdef CONFIG_RFS_ACCEL |
1238 | int (*ndo_rx_flow_steer)(struct net_device *dev, | |
1239 | const struct sk_buff *skb, | |
1240 | u16 rxq_index, | |
1241 | u32 flow_id); | |
1242 | #endif | |
fbaec0ea JP |
1243 | int (*ndo_add_slave)(struct net_device *dev, |
1244 | struct net_device *slave_dev); | |
1245 | int (*ndo_del_slave)(struct net_device *dev, | |
1246 | struct net_device *slave_dev); | |
c8f44aff MM |
1247 | netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1248 | netdev_features_t features); | |
5455c699 | 1249 | int (*ndo_set_features)(struct net_device *dev, |
c8f44aff | 1250 | netdev_features_t features); |
503eebc2 JP |
1251 | int (*ndo_neigh_construct)(struct net_device *dev, |
1252 | struct neighbour *n); | |
1253 | void (*ndo_neigh_destroy)(struct net_device *dev, | |
1254 | struct neighbour *n); | |
77162022 JF |
1255 | |
1256 | int (*ndo_fdb_add)(struct ndmsg *ndm, | |
edc7d573 | 1257 | struct nlattr *tb[], |
77162022 | 1258 | struct net_device *dev, |
6b6e2725 | 1259 | const unsigned char *addr, |
f6f6424b | 1260 | u16 vid, |
77162022 JF |
1261 | u16 flags); |
1262 | int (*ndo_fdb_del)(struct ndmsg *ndm, | |
1690be63 | 1263 | struct nlattr *tb[], |
77162022 | 1264 | struct net_device *dev, |
f6f6424b JP |
1265 | const unsigned char *addr, |
1266 | u16 vid); | |
77162022 JF |
1267 | int (*ndo_fdb_dump)(struct sk_buff *skb, |
1268 | struct netlink_callback *cb, | |
1269 | struct net_device *dev, | |
5d5eacb3 | 1270 | struct net_device *filter_dev, |
d297653d | 1271 | int *idx); |
e5a55a89 JF |
1272 | |
1273 | int (*ndo_bridge_setlink)(struct net_device *dev, | |
add511b3 RP |
1274 | struct nlmsghdr *nlh, |
1275 | u16 flags); | |
e5a55a89 JF |
1276 | int (*ndo_bridge_getlink)(struct sk_buff *skb, |
1277 | u32 pid, u32 seq, | |
6cbdceeb | 1278 | struct net_device *dev, |
46c264da ND |
1279 | u32 filter_mask, |
1280 | int nlflags); | |
407af329 | 1281 | int (*ndo_bridge_dellink)(struct net_device *dev, |
add511b3 RP |
1282 | struct nlmsghdr *nlh, |
1283 | u16 flags); | |
4bf84c35 JP |
1284 | int (*ndo_change_carrier)(struct net_device *dev, |
1285 | bool new_carrier); | |
66b52b0d | 1286 | int (*ndo_get_phys_port_id)(struct net_device *dev, |
02637fce | 1287 | struct netdev_phys_item_id *ppid); |
db24a904 DA |
1288 | int (*ndo_get_phys_port_name)(struct net_device *dev, |
1289 | char *name, size_t len); | |
7c46a640 AD |
1290 | void (*ndo_udp_tunnel_add)(struct net_device *dev, |
1291 | struct udp_tunnel_info *ti); | |
1292 | void (*ndo_udp_tunnel_del)(struct net_device *dev, | |
1293 | struct udp_tunnel_info *ti); | |
a6cc0cfa JF |
1294 | void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1295 | struct net_device *dev); | |
1296 | void (*ndo_dfwd_del_station)(struct net_device *pdev, | |
1297 | void *priv); | |
1298 | ||
1299 | netdev_tx_t (*ndo_dfwd_start_xmit) (struct sk_buff *skb, | |
1300 | struct net_device *dev, | |
1301 | void *priv); | |
25175ba5 | 1302 | int (*ndo_get_lock_subclass)(struct net_device *dev); |
822b3b2e JF |
1303 | int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1304 | int queue_index, | |
1305 | u32 maxrate); | |
a54acb3a | 1306 | int (*ndo_get_iflink)(const struct net_device *dev); |
d746d707 AK |
1307 | int (*ndo_change_proto_down)(struct net_device *dev, |
1308 | bool proto_down); | |
fc4099f1 PS |
1309 | int (*ndo_fill_metadata_dst)(struct net_device *dev, |
1310 | struct sk_buff *skb); | |
871b642a PA |
1311 | void (*ndo_set_rx_headroom)(struct net_device *dev, |
1312 | int needed_headroom); | |
a7862b45 BB |
1313 | int (*ndo_xdp)(struct net_device *dev, |
1314 | struct netdev_xdp *xdp); | |
d314774c SH |
1315 | }; |
1316 | ||
7aa98047 LR |
1317 | /** |
1318 | * enum net_device_priv_flags - &struct net_device priv_flags | |
1319 | * | |
1320 | * These are the &struct net_device, they are only set internally | |
1321 | * by drivers and used in the kernel. These flags are invisible to | |
5e82b4b2 | 1322 | * userspace; this means that the order of these flags can change |
7aa98047 LR |
1323 | * during any kernel release. |
1324 | * | |
1325 | * You should have a pretty good reason to be extending these flags. | |
1326 | * | |
1327 | * @IFF_802_1Q_VLAN: 802.1Q VLAN device | |
1328 | * @IFF_EBRIDGE: Ethernet bridging device | |
7aa98047 | 1329 | * @IFF_BONDING: bonding master or slave |
7aa98047 | 1330 | * @IFF_ISATAP: ISATAP interface (RFC4214) |
7aa98047 LR |
1331 | * @IFF_WAN_HDLC: WAN HDLC device |
1332 | * @IFF_XMIT_DST_RELEASE: dev_hard_start_xmit() is allowed to | |
1333 | * release skb->dst | |
1334 | * @IFF_DONT_BRIDGE: disallow bridging this ether dev | |
1335 | * @IFF_DISABLE_NETPOLL: disable netpoll at run-time | |
1336 | * @IFF_MACVLAN_PORT: device used as macvlan port | |
1337 | * @IFF_BRIDGE_PORT: device used as bridge port | |
1338 | * @IFF_OVS_DATAPATH: device used as Open vSwitch datapath port | |
1339 | * @IFF_TX_SKB_SHARING: The interface supports sharing skbs on transmit | |
1340 | * @IFF_UNICAST_FLT: Supports unicast filtering | |
1341 | * @IFF_TEAM_PORT: device used as team port | |
1342 | * @IFF_SUPP_NOFCS: device supports sending custom FCS | |
1343 | * @IFF_LIVE_ADDR_CHANGE: device supports hardware address | |
1344 | * change when it's running | |
1345 | * @IFF_MACVLAN: Macvlan device | |
6d0e24cd LB |
1346 | * @IFF_XMIT_DST_RELEASE_PERM: IFF_XMIT_DST_RELEASE not taking into account |
1347 | * underlying stacked devices | |
1348 | * @IFF_IPVLAN_MASTER: IPvlan master device | |
1349 | * @IFF_IPVLAN_SLAVE: IPvlan slave device | |
007979ea | 1350 | * @IFF_L3MDEV_MASTER: device is an L3 master device |
fa8187c9 | 1351 | * @IFF_NO_QUEUE: device can run without qdisc attached |
35d4e172 | 1352 | * @IFF_OPENVSWITCH: device is a Open vSwitch master |
fee6d4c7 | 1353 | * @IFF_L3MDEV_SLAVE: device is enslaved to an L3 master device |
c981e421 | 1354 | * @IFF_TEAM: device is a team device |
d4ab4286 | 1355 | * @IFF_RXFH_CONFIGURED: device has had Rx Flow indirection table configured |
871b642a PA |
1356 | * @IFF_PHONY_HEADROOM: the headroom value is controlled by an external |
1357 | * entity (i.e. the master device for bridged veth) | |
3c175784 | 1358 | * @IFF_MACSEC: device is a MACsec device |
7aa98047 LR |
1359 | */ |
1360 | enum netdev_priv_flags { | |
1361 | IFF_802_1Q_VLAN = 1<<0, | |
1362 | IFF_EBRIDGE = 1<<1, | |
0dc1549b JP |
1363 | IFF_BONDING = 1<<2, |
1364 | IFF_ISATAP = 1<<3, | |
1365 | IFF_WAN_HDLC = 1<<4, | |
1366 | IFF_XMIT_DST_RELEASE = 1<<5, | |
1367 | IFF_DONT_BRIDGE = 1<<6, | |
1368 | IFF_DISABLE_NETPOLL = 1<<7, | |
1369 | IFF_MACVLAN_PORT = 1<<8, | |
1370 | IFF_BRIDGE_PORT = 1<<9, | |
1371 | IFF_OVS_DATAPATH = 1<<10, | |
1372 | IFF_TX_SKB_SHARING = 1<<11, | |
1373 | IFF_UNICAST_FLT = 1<<12, | |
1374 | IFF_TEAM_PORT = 1<<13, | |
1375 | IFF_SUPP_NOFCS = 1<<14, | |
1376 | IFF_LIVE_ADDR_CHANGE = 1<<15, | |
1377 | IFF_MACVLAN = 1<<16, | |
1378 | IFF_XMIT_DST_RELEASE_PERM = 1<<17, | |
1379 | IFF_IPVLAN_MASTER = 1<<18, | |
1380 | IFF_IPVLAN_SLAVE = 1<<19, | |
007979ea | 1381 | IFF_L3MDEV_MASTER = 1<<20, |
0dc1549b JP |
1382 | IFF_NO_QUEUE = 1<<21, |
1383 | IFF_OPENVSWITCH = 1<<22, | |
fee6d4c7 | 1384 | IFF_L3MDEV_SLAVE = 1<<23, |
c981e421 | 1385 | IFF_TEAM = 1<<24, |
d4ab4286 | 1386 | IFF_RXFH_CONFIGURED = 1<<25, |
871b642a | 1387 | IFF_PHONY_HEADROOM = 1<<26, |
3c175784 | 1388 | IFF_MACSEC = 1<<27, |
7aa98047 LR |
1389 | }; |
1390 | ||
1391 | #define IFF_802_1Q_VLAN IFF_802_1Q_VLAN | |
1392 | #define IFF_EBRIDGE IFF_EBRIDGE | |
7aa98047 | 1393 | #define IFF_BONDING IFF_BONDING |
7aa98047 | 1394 | #define IFF_ISATAP IFF_ISATAP |
7aa98047 LR |
1395 | #define IFF_WAN_HDLC IFF_WAN_HDLC |
1396 | #define IFF_XMIT_DST_RELEASE IFF_XMIT_DST_RELEASE | |
1397 | #define IFF_DONT_BRIDGE IFF_DONT_BRIDGE | |
1398 | #define IFF_DISABLE_NETPOLL IFF_DISABLE_NETPOLL | |
1399 | #define IFF_MACVLAN_PORT IFF_MACVLAN_PORT | |
1400 | #define IFF_BRIDGE_PORT IFF_BRIDGE_PORT | |
1401 | #define IFF_OVS_DATAPATH IFF_OVS_DATAPATH | |
1402 | #define IFF_TX_SKB_SHARING IFF_TX_SKB_SHARING | |
1403 | #define IFF_UNICAST_FLT IFF_UNICAST_FLT | |
1404 | #define IFF_TEAM_PORT IFF_TEAM_PORT | |
1405 | #define IFF_SUPP_NOFCS IFF_SUPP_NOFCS | |
1406 | #define IFF_LIVE_ADDR_CHANGE IFF_LIVE_ADDR_CHANGE | |
1407 | #define IFF_MACVLAN IFF_MACVLAN | |
02875878 | 1408 | #define IFF_XMIT_DST_RELEASE_PERM IFF_XMIT_DST_RELEASE_PERM |
2ad7bf36 MB |
1409 | #define IFF_IPVLAN_MASTER IFF_IPVLAN_MASTER |
1410 | #define IFF_IPVLAN_SLAVE IFF_IPVLAN_SLAVE | |
007979ea | 1411 | #define IFF_L3MDEV_MASTER IFF_L3MDEV_MASTER |
fa8187c9 | 1412 | #define IFF_NO_QUEUE IFF_NO_QUEUE |
35d4e172 | 1413 | #define IFF_OPENVSWITCH IFF_OPENVSWITCH |
8f25348b | 1414 | #define IFF_L3MDEV_SLAVE IFF_L3MDEV_SLAVE |
c981e421 | 1415 | #define IFF_TEAM IFF_TEAM |
d4ab4286 | 1416 | #define IFF_RXFH_CONFIGURED IFF_RXFH_CONFIGURED |
3c175784 | 1417 | #define IFF_MACSEC IFF_MACSEC |
7aa98047 | 1418 | |
536721b1 KK |
1419 | /** |
1420 | * struct net_device - The DEVICE structure. | |
1421 | * Actually, this whole structure is a big mistake. It mixes I/O | |
1422 | * data with strictly "high-level" data, and it has to know about | |
1423 | * almost every data structure used in the INET module. | |
1424 | * | |
1425 | * @name: This is the first field of the "visible" part of this structure | |
1426 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
1427 | * of the interface. | |
1428 | * | |
1429 | * @name_hlist: Device name hash chain, please keep it close to name[] | |
1430 | * @ifalias: SNMP alias | |
1431 | * @mem_end: Shared memory end | |
1432 | * @mem_start: Shared memory start | |
1433 | * @base_addr: Device I/O address | |
1434 | * @irq: Device IRQ number | |
1435 | * | |
14ffbbb8 TG |
1436 | * @carrier_changes: Stats to monitor carrier on<->off transitions |
1437 | * | |
536721b1 KK |
1438 | * @state: Generic network queuing layer state, see netdev_state_t |
1439 | * @dev_list: The global list of network devices | |
5e82b4b2 BH |
1440 | * @napi_list: List entry used for polling NAPI devices |
1441 | * @unreg_list: List entry when we are unregistering the | |
1442 | * device; see the function unregister_netdev | |
1443 | * @close_list: List entry used when we are closing the device | |
62d885fe BP |
1444 | * @ptype_all: Device-specific packet handlers for all protocols |
1445 | * @ptype_specific: Device-specific, protocol-specific packet handlers | |
536721b1 KK |
1446 | * |
1447 | * @adj_list: Directly linked devices, like slaves for bonding | |
536721b1 KK |
1448 | * @features: Currently active device features |
1449 | * @hw_features: User-changeable features | |
1450 | * | |
1451 | * @wanted_features: User-requested features | |
1452 | * @vlan_features: Mask of features inheritable by VLAN devices | |
1453 | * | |
1454 | * @hw_enc_features: Mask of features inherited by encapsulating devices | |
1455 | * This field indicates what encapsulation | |
1456 | * offloads the hardware is capable of doing, | |
1457 | * and drivers will need to set them appropriately. | |
1458 | * | |
1459 | * @mpls_features: Mask of features inheritable by MPLS | |
1460 | * | |
1461 | * @ifindex: interface index | |
5e82b4b2 | 1462 | * @group: The group the device belongs to |
536721b1 KK |
1463 | * |
1464 | * @stats: Statistics struct, which was left as a legacy, use | |
1465 | * rtnl_link_stats64 instead | |
1466 | * | |
1467 | * @rx_dropped: Dropped packets by core network, | |
1468 | * do not use this in drivers | |
1469 | * @tx_dropped: Dropped packets by core network, | |
1470 | * do not use this in drivers | |
6e7333d3 JW |
1471 | * @rx_nohandler: nohandler dropped packets by core network on |
1472 | * inactive devices, do not use this in drivers | |
536721b1 | 1473 | * |
536721b1 KK |
1474 | * @wireless_handlers: List of functions to handle Wireless Extensions, |
1475 | * instead of ioctl, | |
1476 | * see <net/iw_handler.h> for details. | |
1477 | * @wireless_data: Instance data managed by the core of wireless extensions | |
1478 | * | |
1479 | * @netdev_ops: Includes several pointers to callbacks, | |
1480 | * if one wants to override the ndo_*() functions | |
1481 | * @ethtool_ops: Management operations | |
f997c55c AA |
1482 | * @ndisc_ops: Includes callbacks for different IPv6 neighbour |
1483 | * discovery handling. Necessary for e.g. 6LoWPAN. | |
d476059e | 1484 | * @header_ops: Includes callbacks for creating,parsing,caching,etc |
536721b1 KK |
1485 | * of Layer 2 headers. |
1486 | * | |
1487 | * @flags: Interface flags (a la BSD) | |
1488 | * @priv_flags: Like 'flags' but invisible to userspace, | |
1489 | * see if.h for the definitions | |
1490 | * @gflags: Global flags ( kept as legacy ) | |
1491 | * @padded: How much padding added by alloc_netdev() | |
1492 | * @operstate: RFC2863 operstate | |
1493 | * @link_mode: Mapping policy to operstate | |
1494 | * @if_port: Selectable AUI, TP, ... | |
1495 | * @dma: DMA channel | |
1496 | * @mtu: Interface MTU value | |
61e84623 JW |
1497 | * @min_mtu: Interface Minimum MTU value |
1498 | * @max_mtu: Interface Maximum MTU value | |
536721b1 | 1499 | * @type: Interface hardware type |
2793a23a | 1500 | * @hard_header_len: Maximum hardware header length. |
217e6fa2 | 1501 | * @min_header_len: Minimum hardware header length |
536721b1 KK |
1502 | * |
1503 | * @needed_headroom: Extra headroom the hardware may need, but not in all | |
1504 | * cases can this be guaranteed | |
1505 | * @needed_tailroom: Extra tailroom the hardware may need, but not in all | |
1506 | * cases can this be guaranteed. Some cases also use | |
1507 | * LL_MAX_HEADER instead to allocate the skb | |
1508 | * | |
1509 | * interface address info: | |
1510 | * | |
1511 | * @perm_addr: Permanent hw address | |
1512 | * @addr_assign_type: Hw address assignment type | |
1513 | * @addr_len: Hardware address length | |
8626a0c8 | 1514 | * @neigh_priv_len: Used in neigh_alloc() |
536721b1 KK |
1515 | * @dev_id: Used to differentiate devices that share |
1516 | * the same link layer address | |
1517 | * @dev_port: Used to differentiate devices that share | |
1518 | * the same function | |
1519 | * @addr_list_lock: XXX: need comments on this one | |
5e82b4b2 | 1520 | * @uc_promisc: Counter that indicates promiscuous mode |
536721b1 KK |
1521 | * has been enabled due to the need to listen to |
1522 | * additional unicast addresses in a device that | |
1523 | * does not implement ndo_set_rx_mode() | |
14ffbbb8 TG |
1524 | * @uc: unicast mac addresses |
1525 | * @mc: multicast mac addresses | |
1526 | * @dev_addrs: list of device hw addresses | |
1527 | * @queues_kset: Group of all Kobjects in the Tx and RX queues | |
5e82b4b2 BH |
1528 | * @promiscuity: Number of times the NIC is told to work in |
1529 | * promiscuous mode; if it becomes 0 the NIC will | |
1530 | * exit promiscuous mode | |
536721b1 KK |
1531 | * @allmulti: Counter, enables or disables allmulticast mode |
1532 | * | |
1533 | * @vlan_info: VLAN info | |
1534 | * @dsa_ptr: dsa specific data | |
1535 | * @tipc_ptr: TIPC specific data | |
1536 | * @atalk_ptr: AppleTalk link | |
1537 | * @ip_ptr: IPv4 specific data | |
1538 | * @dn_ptr: DECnet specific data | |
1539 | * @ip6_ptr: IPv6 specific data | |
1540 | * @ax25_ptr: AX.25 specific data | |
1541 | * @ieee80211_ptr: IEEE 802.11 specific data, assign before registering | |
1542 | * | |
536721b1 KK |
1543 | * @dev_addr: Hw address (before bcast, |
1544 | * because most packets are unicast) | |
1545 | * | |
1546 | * @_rx: Array of RX queues | |
1547 | * @num_rx_queues: Number of RX queues | |
1548 | * allocated at register_netdev() time | |
1549 | * @real_num_rx_queues: Number of RX queues currently active in device | |
1550 | * | |
1551 | * @rx_handler: handler for received packets | |
1552 | * @rx_handler_data: XXX: need comments on this one | |
1553 | * @ingress_queue: XXX: need comments on this one | |
1554 | * @broadcast: hw bcast address | |
1555 | * | |
14ffbbb8 TG |
1556 | * @rx_cpu_rmap: CPU reverse-mapping for RX completion interrupts, |
1557 | * indexed by RX queue number. Assigned by driver. | |
1558 | * This must only be set if the ndo_rx_flow_steer | |
1559 | * operation is defined | |
1560 | * @index_hlist: Device index hash chain | |
1561 | * | |
536721b1 KK |
1562 | * @_tx: Array of TX queues |
1563 | * @num_tx_queues: Number of TX queues allocated at alloc_netdev_mq() time | |
1564 | * @real_num_tx_queues: Number of TX queues currently active in device | |
1565 | * @qdisc: Root qdisc from userspace point of view | |
1566 | * @tx_queue_len: Max frames per queue allowed | |
1567 | * @tx_global_lock: XXX: need comments on this one | |
1568 | * | |
1569 | * @xps_maps: XXX: need comments on this one | |
1570 | * | |
536721b1 | 1571 | * @watchdog_timeo: Represents the timeout that is used by |
5e82b4b2 | 1572 | * the watchdog (see dev_watchdog()) |
536721b1 KK |
1573 | * @watchdog_timer: List of timers |
1574 | * | |
1575 | * @pcpu_refcnt: Number of references to this device | |
1576 | * @todo_list: Delayed register/unregister | |
536721b1 KK |
1577 | * @link_watch_list: XXX: need comments on this one |
1578 | * | |
1579 | * @reg_state: Register/unregister state machine | |
1580 | * @dismantle: Device is going to be freed | |
1581 | * @rtnl_link_state: This enum represents the phases of creating | |
1582 | * a new link | |
1583 | * | |
1584 | * @destructor: Called from unregister, | |
1585 | * can be used to call free_netdev | |
1586 | * @npinfo: XXX: need comments on this one | |
1587 | * @nd_net: Network namespace this network device is inside | |
1588 | * | |
1589 | * @ml_priv: Mid-layer private | |
1590 | * @lstats: Loopback statistics | |
1591 | * @tstats: Tunnel statistics | |
1592 | * @dstats: Dummy statistics | |
1593 | * @vstats: Virtual ethernet statistics | |
1594 | * | |
1595 | * @garp_port: GARP | |
1596 | * @mrp_port: MRP | |
1597 | * | |
1598 | * @dev: Class/net/name entry | |
1599 | * @sysfs_groups: Space for optional device, statistics and wireless | |
1600 | * sysfs groups | |
1601 | * | |
1602 | * @sysfs_rx_queue_group: Space for optional per-rx queue attributes | |
1603 | * @rtnl_link_ops: Rtnl_link_ops | |
1604 | * | |
1605 | * @gso_max_size: Maximum size of generic segmentation offload | |
1606 | * @gso_max_segs: Maximum number of segments that can be passed to the | |
1607 | * NIC for GSO | |
1608 | * | |
1609 | * @dcbnl_ops: Data Center Bridging netlink ops | |
1610 | * @num_tc: Number of traffic classes in the net device | |
1611 | * @tc_to_txq: XXX: need comments on this one | |
920c1cd3 | 1612 | * @prio_tc_map: XXX: need comments on this one |
536721b1 KK |
1613 | * |
1614 | * @fcoe_ddp_xid: Max exchange id for FCoE LRO by ddp | |
1615 | * | |
1616 | * @priomap: XXX: need comments on this one | |
1617 | * @phydev: Physical device may attach itself | |
1618 | * for hardware timestamping | |
1619 | * | |
123b3652 ED |
1620 | * @qdisc_tx_busylock: lockdep class annotating Qdisc->busylock spinlock |
1621 | * @qdisc_running_key: lockdep class annotating Qdisc->running seqcount | |
536721b1 | 1622 | * |
d746d707 AK |
1623 | * @proto_down: protocol port state information can be sent to the |
1624 | * switch driver and used to set the phys state of the | |
1625 | * switch port. | |
1626 | * | |
1da177e4 LT |
1627 | * FIXME: cleanup struct net_device such that network protocol info |
1628 | * moves out. | |
1629 | */ | |
1630 | ||
d94d9fee | 1631 | struct net_device { |
1da177e4 | 1632 | char name[IFNAMSIZ]; |
9356b8fc | 1633 | struct hlist_node name_hlist; |
0b815a1a | 1634 | char *ifalias; |
1da177e4 LT |
1635 | /* |
1636 | * I/O specific fields | |
1637 | * FIXME: Merge these and struct ifmap into one | |
1638 | */ | |
536721b1 KK |
1639 | unsigned long mem_end; |
1640 | unsigned long mem_start; | |
1641 | unsigned long base_addr; | |
1642 | int irq; | |
1da177e4 | 1643 | |
14ffbbb8 TG |
1644 | atomic_t carrier_changes; |
1645 | ||
1da177e4 | 1646 | /* |
536721b1 KK |
1647 | * Some hardware also needs these fields (state,dev_list, |
1648 | * napi_list,unreg_list,close_list) but they are not | |
1da177e4 LT |
1649 | * part of the usual set specified in Space.c. |
1650 | */ | |
1651 | ||
1da177e4 LT |
1652 | unsigned long state; |
1653 | ||
7562f876 | 1654 | struct list_head dev_list; |
bea3348e | 1655 | struct list_head napi_list; |
44a0873d | 1656 | struct list_head unreg_list; |
5cde2829 | 1657 | struct list_head close_list; |
7866a621 SN |
1658 | struct list_head ptype_all; |
1659 | struct list_head ptype_specific; | |
2f268f12 | 1660 | |
2f268f12 VF |
1661 | struct { |
1662 | struct list_head upper; | |
1663 | struct list_head lower; | |
1664 | } adj_list; | |
1665 | ||
c8f44aff | 1666 | netdev_features_t features; |
c8f44aff | 1667 | netdev_features_t hw_features; |
c8f44aff | 1668 | netdev_features_t wanted_features; |
c8f44aff | 1669 | netdev_features_t vlan_features; |
6a674e9c | 1670 | netdev_features_t hw_enc_features; |
0d89d203 | 1671 | netdev_features_t mpls_features; |
802ab55a | 1672 | netdev_features_t gso_partial_features; |
04ed3e74 | 1673 | |
1da177e4 | 1674 | int ifindex; |
7a66bbc9 | 1675 | int group; |
1da177e4 | 1676 | |
c45d286e | 1677 | struct net_device_stats stats; |
015f0688 | 1678 | |
015f0688 ED |
1679 | atomic_long_t rx_dropped; |
1680 | atomic_long_t tx_dropped; | |
6e7333d3 | 1681 | atomic_long_t rx_nohandler; |
1da177e4 | 1682 | |
b86e0280 | 1683 | #ifdef CONFIG_WIRELESS_EXT |
5e82b4b2 BH |
1684 | const struct iw_handler_def *wireless_handlers; |
1685 | struct iw_public_data *wireless_data; | |
b86e0280 | 1686 | #endif |
d314774c | 1687 | const struct net_device_ops *netdev_ops; |
76fd8593 | 1688 | const struct ethtool_ops *ethtool_ops; |
4170604f | 1689 | #ifdef CONFIG_NET_SWITCHDEV |
9d47c0a2 | 1690 | const struct switchdev_ops *switchdev_ops; |
4170604f | 1691 | #endif |
1b69c6d0 DA |
1692 | #ifdef CONFIG_NET_L3_MASTER_DEV |
1693 | const struct l3mdev_ops *l3mdev_ops; | |
1694 | #endif | |
f997c55c AA |
1695 | #if IS_ENABLED(CONFIG_IPV6) |
1696 | const struct ndisc_ops *ndisc_ops; | |
1697 | #endif | |
1da177e4 | 1698 | |
3b04ddde SH |
1699 | const struct header_ops *header_ops; |
1700 | ||
536721b1 KK |
1701 | unsigned int flags; |
1702 | unsigned int priv_flags; | |
1703 | ||
1da177e4 | 1704 | unsigned short gflags; |
536721b1 | 1705 | unsigned short padded; |
1da177e4 | 1706 | |
536721b1 KK |
1707 | unsigned char operstate; |
1708 | unsigned char link_mode; | |
b00055aa | 1709 | |
536721b1 KK |
1710 | unsigned char if_port; |
1711 | unsigned char dma; | |
bdc220da | 1712 | |
536721b1 | 1713 | unsigned int mtu; |
61e84623 JW |
1714 | unsigned int min_mtu; |
1715 | unsigned int max_mtu; | |
536721b1 KK |
1716 | unsigned short type; |
1717 | unsigned short hard_header_len; | |
217e6fa2 | 1718 | unsigned short min_header_len; |
1da177e4 | 1719 | |
f5184d26 JB |
1720 | unsigned short needed_headroom; |
1721 | unsigned short needed_tailroom; | |
1722 | ||
1da177e4 | 1723 | /* Interface address info. */ |
536721b1 KK |
1724 | unsigned char perm_addr[MAX_ADDR_LEN]; |
1725 | unsigned char addr_assign_type; | |
1726 | unsigned char addr_len; | |
a0a9663d | 1727 | unsigned short neigh_priv_len; |
536721b1 KK |
1728 | unsigned short dev_id; |
1729 | unsigned short dev_port; | |
ccffad25 | 1730 | spinlock_t addr_list_lock; |
14ffbbb8 TG |
1731 | unsigned char name_assign_type; |
1732 | bool uc_promisc; | |
536721b1 KK |
1733 | struct netdev_hw_addr_list uc; |
1734 | struct netdev_hw_addr_list mc; | |
1735 | struct netdev_hw_addr_list dev_addrs; | |
1736 | ||
4c3d5e7b ED |
1737 | #ifdef CONFIG_SYSFS |
1738 | struct kset *queues_kset; | |
1739 | #endif | |
9d45abe1 WC |
1740 | unsigned int promiscuity; |
1741 | unsigned int allmulti; | |
1da177e4 | 1742 | |
1da177e4 | 1743 | |
5e82b4b2 | 1744 | /* Protocol-specific pointers */ |
65ac6a5f | 1745 | |
d11ead75 | 1746 | #if IS_ENABLED(CONFIG_VLAN_8021Q) |
536721b1 | 1747 | struct vlan_info __rcu *vlan_info; |
65ac6a5f | 1748 | #endif |
34a430d7 | 1749 | #if IS_ENABLED(CONFIG_NET_DSA) |
536721b1 | 1750 | struct dsa_switch_tree *dsa_ptr; |
37cb0620 YX |
1751 | #endif |
1752 | #if IS_ENABLED(CONFIG_TIPC) | |
536721b1 | 1753 | struct tipc_bearer __rcu *tipc_ptr; |
91da11f8 | 1754 | #endif |
536721b1 KK |
1755 | void *atalk_ptr; |
1756 | struct in_device __rcu *ip_ptr; | |
1757 | struct dn_dev __rcu *dn_ptr; | |
1758 | struct inet6_dev __rcu *ip6_ptr; | |
1759 | void *ax25_ptr; | |
1760 | struct wireless_dev *ieee80211_ptr; | |
98a18b6f | 1761 | struct wpan_dev *ieee802154_ptr; |
03c57747 RS |
1762 | #if IS_ENABLED(CONFIG_MPLS_ROUTING) |
1763 | struct mpls_dev __rcu *mpls_ptr; | |
1764 | #endif | |
1da177e4 | 1765 | |
9356b8fc | 1766 | /* |
cd13539b | 1767 | * Cache lines mostly used on receive path (including eth_type_trans()) |
9356b8fc | 1768 | */ |
9356b8fc | 1769 | /* Interface address info used in eth_type_trans() */ |
536721b1 | 1770 | unsigned char *dev_addr; |
f001fde5 | 1771 | |
a953be53 | 1772 | #ifdef CONFIG_SYSFS |
0a9627f2 TH |
1773 | struct netdev_rx_queue *_rx; |
1774 | ||
0a9627f2 | 1775 | unsigned int num_rx_queues; |
62fe0b40 | 1776 | unsigned int real_num_rx_queues; |
df334545 | 1777 | #endif |
0a9627f2 | 1778 | |
3b47d303 | 1779 | unsigned long gro_flush_timeout; |
61391cde | 1780 | rx_handler_func_t __rcu *rx_handler; |
1781 | void __rcu *rx_handler_data; | |
e8a0464c | 1782 | |
4cda01e8 | 1783 | #ifdef CONFIG_NET_CLS_ACT |
d2788d34 DB |
1784 | struct tcf_proto __rcu *ingress_cl_list; |
1785 | #endif | |
24824a09 | 1786 | struct netdev_queue __rcu *ingress_queue; |
e687ad60 | 1787 | #ifdef CONFIG_NETFILTER_INGRESS |
e3b37f11 | 1788 | struct nf_hook_entry __rcu *nf_hooks_ingress; |
e687ad60 | 1789 | #endif |
d2788d34 | 1790 | |
536721b1 | 1791 | unsigned char broadcast[MAX_ADDR_LEN]; |
14ffbbb8 TG |
1792 | #ifdef CONFIG_RFS_ACCEL |
1793 | struct cpu_rmap *rx_cpu_rmap; | |
1794 | #endif | |
1795 | struct hlist_node index_hlist; | |
cd13539b ED |
1796 | |
1797 | /* | |
1798 | * Cache lines mostly used on transmit path | |
1799 | */ | |
e8a0464c DM |
1800 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
1801 | unsigned int num_tx_queues; | |
fd2ea0a7 | 1802 | unsigned int real_num_tx_queues; |
af356afa | 1803 | struct Qdisc *qdisc; |
59cc1f61 JK |
1804 | #ifdef CONFIG_NET_SCHED |
1805 | DECLARE_HASHTABLE (qdisc_hash, 4); | |
1806 | #endif | |
536721b1 | 1807 | unsigned long tx_queue_len; |
c3f26a26 | 1808 | spinlock_t tx_global_lock; |
14ffbbb8 | 1809 | int watchdog_timeo; |
cd13539b | 1810 | |
bf264145 | 1811 | #ifdef CONFIG_XPS |
a4177869 | 1812 | struct xps_dev_maps __rcu *xps_maps; |
bf264145 | 1813 | #endif |
1f211a1b DB |
1814 | #ifdef CONFIG_NET_CLS_ACT |
1815 | struct tcf_proto __rcu *egress_cl_list; | |
1816 | #endif | |
0c4f691f | 1817 | |
9356b8fc | 1818 | /* These may be needed for future network-power-down code. */ |
9356b8fc ED |
1819 | struct timer_list watchdog_timer; |
1820 | ||
29b4433d | 1821 | int __percpu *pcpu_refcnt; |
1da177e4 | 1822 | struct list_head todo_list; |
1da177e4 | 1823 | |
e014debe | 1824 | struct list_head link_watch_list; |
572a103d | 1825 | |
1da177e4 | 1826 | enum { NETREG_UNINITIALIZED=0, |
b17a7c17 | 1827 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
1828 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
1829 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
1830 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 1831 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
449f4544 ED |
1832 | } reg_state:8; |
1833 | ||
536721b1 | 1834 | bool dismantle; |
a2835763 PM |
1835 | |
1836 | enum { | |
1837 | RTNL_LINK_INITIALIZED, | |
1838 | RTNL_LINK_INITIALIZING, | |
1839 | } rtnl_link_state:16; | |
1da177e4 | 1840 | |
d314774c | 1841 | void (*destructor)(struct net_device *dev); |
1da177e4 | 1842 | |
1da177e4 | 1843 | #ifdef CONFIG_NETPOLL |
5fbee843 | 1844 | struct netpoll_info __rcu *npinfo; |
1da177e4 | 1845 | #endif |
eae792b7 | 1846 | |
0c5c9fb5 | 1847 | possible_net_t nd_net; |
4a1c5371 | 1848 | |
4951704b | 1849 | /* mid-layer private */ |
a7855c78 | 1850 | union { |
536721b1 KK |
1851 | void *ml_priv; |
1852 | struct pcpu_lstats __percpu *lstats; | |
8f84985f | 1853 | struct pcpu_sw_netstats __percpu *tstats; |
536721b1 KK |
1854 | struct pcpu_dstats __percpu *dstats; |
1855 | struct pcpu_vstats __percpu *vstats; | |
a7855c78 | 1856 | }; |
536721b1 | 1857 | |
fb585b44 | 1858 | #if IS_ENABLED(CONFIG_GARP) |
3cc77ec7 | 1859 | struct garp_port __rcu *garp_port; |
fb585b44 TK |
1860 | #endif |
1861 | #if IS_ENABLED(CONFIG_MRP) | |
febf018d | 1862 | struct mrp_port __rcu *mrp_port; |
fb585b44 | 1863 | #endif |
1da177e4 | 1864 | |
5e82b4b2 | 1865 | struct device dev; |
0c509a6c | 1866 | const struct attribute_group *sysfs_groups[4]; |
a953be53 | 1867 | const struct attribute_group *sysfs_rx_queue_group; |
38f7b870 | 1868 | |
38f7b870 | 1869 | const struct rtnl_link_ops *rtnl_link_ops; |
f25f4e44 | 1870 | |
82cc1a7a PWJ |
1871 | /* for setting kernel sock attribute on TCP connection setup */ |
1872 | #define GSO_MAX_SIZE 65536 | |
1873 | unsigned int gso_max_size; | |
30b678d8 BH |
1874 | #define GSO_MAX_SEGS 65535 |
1875 | u16 gso_max_segs; | |
743b03a8 | 1876 | |
7a6b6f51 | 1877 | #ifdef CONFIG_DCB |
32953543 | 1878 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
2f90b865 | 1879 | #endif |
5e82b4b2 BH |
1880 | u8 num_tc; |
1881 | struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE]; | |
1882 | u8 prio_tc_map[TC_BITMASK + 1]; | |
2f90b865 | 1883 | |
d11ead75 | 1884 | #if IS_ENABLED(CONFIG_FCOE) |
4d288d57 | 1885 | unsigned int fcoe_ddp_xid; |
5bc1421e | 1886 | #endif |
86f8515f | 1887 | #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO) |
5bc1421e | 1888 | struct netprio_map __rcu *priomap; |
4d288d57 | 1889 | #endif |
5e82b4b2 BH |
1890 | struct phy_device *phydev; |
1891 | struct lock_class_key *qdisc_tx_busylock; | |
f9eb8aea | 1892 | struct lock_class_key *qdisc_running_key; |
5e82b4b2 | 1893 | bool proto_down; |
1da177e4 | 1894 | }; |
43cb76d9 | 1895 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 LT |
1896 | |
1897 | #define NETDEV_ALIGN 32 | |
1da177e4 | 1898 | |
4f57c087 JF |
1899 | static inline |
1900 | int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio) | |
1901 | { | |
1902 | return dev->prio_tc_map[prio & TC_BITMASK]; | |
1903 | } | |
1904 | ||
1905 | static inline | |
1906 | int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc) | |
1907 | { | |
1908 | if (tc >= dev->num_tc) | |
1909 | return -EINVAL; | |
1910 | ||
1911 | dev->prio_tc_map[prio & TC_BITMASK] = tc & TC_BITMASK; | |
1912 | return 0; | |
1913 | } | |
1914 | ||
8d059b0f | 1915 | int netdev_txq_to_tc(struct net_device *dev, unsigned int txq); |
9cf1f6a8 AD |
1916 | void netdev_reset_tc(struct net_device *dev); |
1917 | int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset); | |
1918 | int netdev_set_num_tc(struct net_device *dev, u8 num_tc); | |
4f57c087 JF |
1919 | |
1920 | static inline | |
1921 | int netdev_get_num_tc(struct net_device *dev) | |
1922 | { | |
1923 | return dev->num_tc; | |
1924 | } | |
1925 | ||
e8a0464c DM |
1926 | static inline |
1927 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
1928 | unsigned int index) | |
1929 | { | |
1930 | return &dev->_tx[index]; | |
1931 | } | |
1932 | ||
10c51b56 DB |
1933 | static inline struct netdev_queue *skb_get_tx_queue(const struct net_device *dev, |
1934 | const struct sk_buff *skb) | |
1935 | { | |
1936 | return netdev_get_tx_queue(dev, skb_get_queue_mapping(skb)); | |
1937 | } | |
1938 | ||
e8a0464c DM |
1939 | static inline void netdev_for_each_tx_queue(struct net_device *dev, |
1940 | void (*f)(struct net_device *, | |
1941 | struct netdev_queue *, | |
1942 | void *), | |
1943 | void *arg) | |
1944 | { | |
1945 | unsigned int i; | |
1946 | ||
1947 | for (i = 0; i < dev->num_tx_queues; i++) | |
1948 | f(dev, &dev->_tx[i], arg); | |
1949 | } | |
1950 | ||
d3fff6c4 ED |
1951 | #define netdev_lockdep_set_classes(dev) \ |
1952 | { \ | |
1953 | static struct lock_class_key qdisc_tx_busylock_key; \ | |
1954 | static struct lock_class_key qdisc_running_key; \ | |
1955 | static struct lock_class_key qdisc_xmit_lock_key; \ | |
1956 | static struct lock_class_key dev_addr_list_lock_key; \ | |
1957 | unsigned int i; \ | |
1958 | \ | |
1959 | (dev)->qdisc_tx_busylock = &qdisc_tx_busylock_key; \ | |
1960 | (dev)->qdisc_running_key = &qdisc_running_key; \ | |
1961 | lockdep_set_class(&(dev)->addr_list_lock, \ | |
1962 | &dev_addr_list_lock_key); \ | |
1963 | for (i = 0; i < (dev)->num_tx_queues; i++) \ | |
1964 | lockdep_set_class(&(dev)->_tx[i]._xmit_lock, \ | |
1965 | &qdisc_xmit_lock_key); \ | |
1966 | } | |
1967 | ||
f629d208 | 1968 | struct netdev_queue *netdev_pick_tx(struct net_device *dev, |
f663dd9a JW |
1969 | struct sk_buff *skb, |
1970 | void *accel_priv); | |
8c4c49df | 1971 | |
871b642a PA |
1972 | /* returns the headroom that the master device needs to take in account |
1973 | * when forwarding to this dev | |
1974 | */ | |
1975 | static inline unsigned netdev_get_fwd_headroom(struct net_device *dev) | |
1976 | { | |
1977 | return dev->priv_flags & IFF_PHONY_HEADROOM ? 0 : dev->needed_headroom; | |
1978 | } | |
1979 | ||
1980 | static inline void netdev_set_rx_headroom(struct net_device *dev, int new_hr) | |
1981 | { | |
1982 | if (dev->netdev_ops->ndo_set_rx_headroom) | |
1983 | dev->netdev_ops->ndo_set_rx_headroom(dev, new_hr); | |
1984 | } | |
1985 | ||
1986 | /* set the device rx headroom to the dev's default */ | |
1987 | static inline void netdev_reset_rx_headroom(struct net_device *dev) | |
1988 | { | |
1989 | netdev_set_rx_headroom(dev, -1); | |
1990 | } | |
1991 | ||
c346dca1 YH |
1992 | /* |
1993 | * Net namespace inlines | |
1994 | */ | |
1995 | static inline | |
1996 | struct net *dev_net(const struct net_device *dev) | |
1997 | { | |
c2d9ba9b | 1998 | return read_pnet(&dev->nd_net); |
c346dca1 YH |
1999 | } |
2000 | ||
2001 | static inline | |
f5aa23fd | 2002 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 | 2003 | { |
0c5c9fb5 | 2004 | write_pnet(&dev->nd_net, net); |
c346dca1 YH |
2005 | } |
2006 | ||
3e8a72d1 | 2007 | static inline bool netdev_uses_dsa(struct net_device *dev) |
cf85d08f | 2008 | { |
3fc88677 | 2009 | #if IS_ENABLED(CONFIG_NET_DSA) |
5aed85ce FF |
2010 | if (dev->dsa_ptr != NULL) |
2011 | return dsa_uses_tagged_protocol(dev->dsa_ptr); | |
396138f0 | 2012 | #endif |
5aed85ce | 2013 | return false; |
396138f0 LB |
2014 | } |
2015 | ||
bea3348e SH |
2016 | /** |
2017 | * netdev_priv - access network device private data | |
2018 | * @dev: network device | |
2019 | * | |
2020 | * Get network device private data | |
2021 | */ | |
6472ce60 | 2022 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 2023 | { |
1ce8e7b5 | 2024 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
1da177e4 LT |
2025 | } |
2026 | ||
1da177e4 LT |
2027 | /* Set the sysfs physical device reference for the network logical device |
2028 | * if set prior to registration will cause a symlink during initialization. | |
2029 | */ | |
43cb76d9 | 2030 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 2031 | |
384912ed | 2032 | /* Set the sysfs device type for the network logical device to allow |
3f79410c | 2033 | * fine-grained identification of different network device types. For |
5e82b4b2 | 2034 | * example Ethernet, Wireless LAN, Bluetooth, WiMAX etc. |
384912ed MH |
2035 | */ |
2036 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) | |
2037 | ||
82dc3c63 ED |
2038 | /* Default NAPI poll() weight |
2039 | * Device drivers are strongly advised to not use bigger value | |
2040 | */ | |
2041 | #define NAPI_POLL_WEIGHT 64 | |
2042 | ||
3b582cc1 | 2043 | /** |
5e82b4b2 | 2044 | * netif_napi_add - initialize a NAPI context |
3b582cc1 | 2045 | * @dev: network device |
5e82b4b2 | 2046 | * @napi: NAPI context |
3b582cc1 SH |
2047 | * @poll: polling function |
2048 | * @weight: default weight | |
2049 | * | |
5e82b4b2 BH |
2050 | * netif_napi_add() must be used to initialize a NAPI context prior to calling |
2051 | * *any* of the other NAPI-related functions. | |
3b582cc1 | 2052 | */ |
d565b0a1 HX |
2053 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
2054 | int (*poll)(struct napi_struct *, int), int weight); | |
bea3348e | 2055 | |
d64b5e85 | 2056 | /** |
5e82b4b2 | 2057 | * netif_tx_napi_add - initialize a NAPI context |
d64b5e85 | 2058 | * @dev: network device |
5e82b4b2 | 2059 | * @napi: NAPI context |
d64b5e85 ED |
2060 | * @poll: polling function |
2061 | * @weight: default weight | |
2062 | * | |
2063 | * This variant of netif_napi_add() should be used from drivers using NAPI | |
2064 | * to exclusively poll a TX queue. | |
2065 | * This will avoid we add it into napi_hash[], thus polluting this hash table. | |
2066 | */ | |
2067 | static inline void netif_tx_napi_add(struct net_device *dev, | |
2068 | struct napi_struct *napi, | |
2069 | int (*poll)(struct napi_struct *, int), | |
2070 | int weight) | |
2071 | { | |
2072 | set_bit(NAPI_STATE_NO_BUSY_POLL, &napi->state); | |
2073 | netif_napi_add(dev, napi, poll, weight); | |
2074 | } | |
2075 | ||
d8156534 | 2076 | /** |
5e82b4b2 BH |
2077 | * netif_napi_del - remove a NAPI context |
2078 | * @napi: NAPI context | |
d8156534 | 2079 | * |
5e82b4b2 | 2080 | * netif_napi_del() removes a NAPI context from the network device NAPI list |
d8156534 | 2081 | */ |
d565b0a1 HX |
2082 | void netif_napi_del(struct napi_struct *napi); |
2083 | ||
2084 | struct napi_gro_cb { | |
78a478d0 | 2085 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
5e82b4b2 | 2086 | void *frag0; |
78a478d0 | 2087 | |
7489594c HX |
2088 | /* Length of frag0. */ |
2089 | unsigned int frag0_len; | |
2090 | ||
86911732 | 2091 | /* This indicates where we are processing relative to skb->data. */ |
5e82b4b2 | 2092 | int data_offset; |
86911732 | 2093 | |
d565b0a1 | 2094 | /* This is non-zero if the packet cannot be merged with the new skb. */ |
bf5a755f JC |
2095 | u16 flush; |
2096 | ||
2097 | /* Save the IP ID here and check when we get to the transport layer */ | |
2098 | u16 flush_id; | |
d565b0a1 HX |
2099 | |
2100 | /* Number of segments aggregated. */ | |
2e71a6f8 ED |
2101 | u16 count; |
2102 | ||
15e2396d TH |
2103 | /* Start offset for remote checksum offload */ |
2104 | u16 gro_remcsum_start; | |
2105 | ||
2e71a6f8 ED |
2106 | /* jiffies when first packet was created/queued */ |
2107 | unsigned long age; | |
86347245 | 2108 | |
afe93325 | 2109 | /* Used in ipv6_gro_receive() and foo-over-udp */ |
b582ef09 OG |
2110 | u16 proto; |
2111 | ||
baa32ff4 TH |
2112 | /* This is non-zero if the packet may be of the same flow. */ |
2113 | u8 same_flow:1; | |
2114 | ||
fac8e0f5 JG |
2115 | /* Used in tunnel GRO receive */ |
2116 | u8 encap_mark:1; | |
573e8fca TH |
2117 | |
2118 | /* GRO checksum is valid */ | |
2119 | u8 csum_valid:1; | |
2120 | ||
662880f4 TH |
2121 | /* Number of checksums via CHECKSUM_UNNECESSARY */ |
2122 | u8 csum_cnt:3; | |
c3c7c254 | 2123 | |
baa32ff4 TH |
2124 | /* Free the skb? */ |
2125 | u8 free:2; | |
2126 | #define NAPI_GRO_FREE 1 | |
2127 | #define NAPI_GRO_FREE_STOLEN_HEAD 2 | |
2128 | ||
efc98d08 TH |
2129 | /* Used in foo-over-udp, set in udp[46]_gro_receive */ |
2130 | u8 is_ipv6:1; | |
2131 | ||
a0ca153f AD |
2132 | /* Used in GRE, set in fou/gue_gro_receive */ |
2133 | u8 is_fou:1; | |
2134 | ||
1530545e AD |
2135 | /* Used to determine if flush_id can be ignored */ |
2136 | u8 is_atomic:1; | |
2137 | ||
fcd91dd4 SD |
2138 | /* Number of gro_receive callbacks this packet already went through */ |
2139 | u8 recursion_counter:4; | |
2140 | ||
2141 | /* 1 bit hole */ | |
baa32ff4 | 2142 | |
bf5a755f JC |
2143 | /* used to support CHECKSUM_COMPLETE for tunneling protocols */ |
2144 | __wsum csum; | |
2145 | ||
c3c7c254 ED |
2146 | /* used in skb_gro_receive() slow path */ |
2147 | struct sk_buff *last; | |
d565b0a1 HX |
2148 | }; |
2149 | ||
2150 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) | |
d8156534 | 2151 | |
fcd91dd4 SD |
2152 | #define GRO_RECURSION_LIMIT 15 |
2153 | static inline int gro_recursion_inc_test(struct sk_buff *skb) | |
2154 | { | |
2155 | return ++NAPI_GRO_CB(skb)->recursion_counter == GRO_RECURSION_LIMIT; | |
2156 | } | |
2157 | ||
2158 | typedef struct sk_buff **(*gro_receive_t)(struct sk_buff **, struct sk_buff *); | |
2159 | static inline struct sk_buff **call_gro_receive(gro_receive_t cb, | |
2160 | struct sk_buff **head, | |
2161 | struct sk_buff *skb) | |
2162 | { | |
2163 | if (unlikely(gro_recursion_inc_test(skb))) { | |
2164 | NAPI_GRO_CB(skb)->flush |= 1; | |
2165 | return NULL; | |
2166 | } | |
2167 | ||
2168 | return cb(head, skb); | |
2169 | } | |
2170 | ||
2171 | typedef struct sk_buff **(*gro_receive_sk_t)(struct sock *, struct sk_buff **, | |
2172 | struct sk_buff *); | |
2173 | static inline struct sk_buff **call_gro_receive_sk(gro_receive_sk_t cb, | |
2174 | struct sock *sk, | |
2175 | struct sk_buff **head, | |
2176 | struct sk_buff *skb) | |
2177 | { | |
2178 | if (unlikely(gro_recursion_inc_test(skb))) { | |
2179 | NAPI_GRO_CB(skb)->flush |= 1; | |
2180 | return NULL; | |
2181 | } | |
2182 | ||
2183 | return cb(sk, head, skb); | |
2184 | } | |
2185 | ||
1da177e4 | 2186 | struct packet_type { |
f2ccd8fa DM |
2187 | __be16 type; /* This is really htons(ether_type). */ |
2188 | struct net_device *dev; /* NULL is wildcarded here */ | |
2189 | int (*func) (struct sk_buff *, | |
2190 | struct net_device *, | |
2191 | struct packet_type *, | |
2192 | struct net_device *); | |
c0de08d0 EL |
2193 | bool (*id_match)(struct packet_type *ptype, |
2194 | struct sock *sk); | |
1da177e4 LT |
2195 | void *af_packet_priv; |
2196 | struct list_head list; | |
2197 | }; | |
2198 | ||
f191a1d1 | 2199 | struct offload_callbacks { |
576a30eb | 2200 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
c8f44aff | 2201 | netdev_features_t features); |
d565b0a1 | 2202 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
a2b12f3c | 2203 | struct sk_buff *skb); |
299603e8 | 2204 | int (*gro_complete)(struct sk_buff *skb, int nhoff); |
f191a1d1 VY |
2205 | }; |
2206 | ||
2207 | struct packet_offload { | |
2208 | __be16 type; /* This is really htons(ether_type). */ | |
bdef7de4 | 2209 | u16 priority; |
f191a1d1 VY |
2210 | struct offload_callbacks callbacks; |
2211 | struct list_head list; | |
1da177e4 LT |
2212 | }; |
2213 | ||
5e82b4b2 | 2214 | /* often modified stats are per-CPU, other are shared (netdev->stats) */ |
8f84985f LR |
2215 | struct pcpu_sw_netstats { |
2216 | u64 rx_packets; | |
2217 | u64 rx_bytes; | |
2218 | u64 tx_packets; | |
2219 | u64 tx_bytes; | |
2220 | struct u64_stats_sync syncp; | |
2221 | }; | |
2222 | ||
aabc92bb PNA |
2223 | #define __netdev_alloc_pcpu_stats(type, gfp) \ |
2224 | ({ \ | |
2225 | typeof(type) __percpu *pcpu_stats = alloc_percpu_gfp(type, gfp);\ | |
2226 | if (pcpu_stats) { \ | |
2227 | int __cpu; \ | |
2228 | for_each_possible_cpu(__cpu) { \ | |
2229 | typeof(type) *stat; \ | |
2230 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ | |
2231 | u64_stats_init(&stat->syncp); \ | |
2232 | } \ | |
2233 | } \ | |
2234 | pcpu_stats; \ | |
1c213bd2 WC |
2235 | }) |
2236 | ||
aabc92bb | 2237 | #define netdev_alloc_pcpu_stats(type) \ |
326fcfa5 | 2238 | __netdev_alloc_pcpu_stats(type, GFP_KERNEL) |
aabc92bb | 2239 | |
764f5e54 JP |
2240 | enum netdev_lag_tx_type { |
2241 | NETDEV_LAG_TX_TYPE_UNKNOWN, | |
2242 | NETDEV_LAG_TX_TYPE_RANDOM, | |
2243 | NETDEV_LAG_TX_TYPE_BROADCAST, | |
2244 | NETDEV_LAG_TX_TYPE_ROUNDROBIN, | |
2245 | NETDEV_LAG_TX_TYPE_ACTIVEBACKUP, | |
2246 | NETDEV_LAG_TX_TYPE_HASH, | |
2247 | }; | |
2248 | ||
2249 | struct netdev_lag_upper_info { | |
2250 | enum netdev_lag_tx_type tx_type; | |
2251 | }; | |
2252 | ||
fb1b2e3c JP |
2253 | struct netdev_lag_lower_state_info { |
2254 | u8 link_up : 1, | |
2255 | tx_enabled : 1; | |
2256 | }; | |
2257 | ||
1da177e4 LT |
2258 | #include <linux/notifier.h> |
2259 | ||
dcfe1421 AW |
2260 | /* netdevice notifier chain. Please remember to update the rtnetlink |
2261 | * notification exclusion list in rtnetlink_event() when adding new | |
2262 | * types. | |
2263 | */ | |
2264 | #define NETDEV_UP 0x0001 /* For now you can't veto a device up/down */ | |
2265 | #define NETDEV_DOWN 0x0002 | |
2266 | #define NETDEV_REBOOT 0x0003 /* Tell a protocol stack a network interface | |
2267 | detected a hardware crash and restarted | |
2268 | - we can use this eg to kick tcp sessions | |
2269 | once done */ | |
2270 | #define NETDEV_CHANGE 0x0004 /* Notify device state change */ | |
2271 | #define NETDEV_REGISTER 0x0005 | |
2272 | #define NETDEV_UNREGISTER 0x0006 | |
1d486bfb | 2273 | #define NETDEV_CHANGEMTU 0x0007 /* notify after mtu change happened */ |
dcfe1421 AW |
2274 | #define NETDEV_CHANGEADDR 0x0008 |
2275 | #define NETDEV_GOING_DOWN 0x0009 | |
2276 | #define NETDEV_CHANGENAME 0x000A | |
2277 | #define NETDEV_FEAT_CHANGE 0x000B | |
2278 | #define NETDEV_BONDING_FAILOVER 0x000C | |
2279 | #define NETDEV_PRE_UP 0x000D | |
2280 | #define NETDEV_PRE_TYPE_CHANGE 0x000E | |
2281 | #define NETDEV_POST_TYPE_CHANGE 0x000F | |
2282 | #define NETDEV_POST_INIT 0x0010 | |
0115e8e3 | 2283 | #define NETDEV_UNREGISTER_FINAL 0x0011 |
dcfe1421 AW |
2284 | #define NETDEV_RELEASE 0x0012 |
2285 | #define NETDEV_NOTIFY_PEERS 0x0013 | |
2286 | #define NETDEV_JOIN 0x0014 | |
42e52bf9 | 2287 | #define NETDEV_CHANGEUPPER 0x0015 |
4aa5dee4 | 2288 | #define NETDEV_RESEND_IGMP 0x0016 |
1d486bfb | 2289 | #define NETDEV_PRECHANGEMTU 0x0017 /* notify before mtu change happened */ |
d4261e56 | 2290 | #define NETDEV_CHANGEINFODATA 0x0018 |
61bd3857 | 2291 | #define NETDEV_BONDING_INFO 0x0019 |
573c7ba0 | 2292 | #define NETDEV_PRECHANGEUPPER 0x001A |
04d48266 | 2293 | #define NETDEV_CHANGELOWERSTATE 0x001B |
7c46a640 | 2294 | #define NETDEV_UDP_TUNNEL_PUSH_INFO 0x001C |
08294a26 | 2295 | #define NETDEV_CHANGE_TX_QUEUE_LEN 0x001E |
dcfe1421 | 2296 | |
f629d208 JP |
2297 | int register_netdevice_notifier(struct notifier_block *nb); |
2298 | int unregister_netdevice_notifier(struct notifier_block *nb); | |
351638e7 JP |
2299 | |
2300 | struct netdev_notifier_info { | |
2301 | struct net_device *dev; | |
2302 | }; | |
2303 | ||
be9efd36 JP |
2304 | struct netdev_notifier_change_info { |
2305 | struct netdev_notifier_info info; /* must be first */ | |
2306 | unsigned int flags_changed; | |
2307 | }; | |
2308 | ||
0e4ead9d JP |
2309 | struct netdev_notifier_changeupper_info { |
2310 | struct netdev_notifier_info info; /* must be first */ | |
2311 | struct net_device *upper_dev; /* new upper dev */ | |
2312 | bool master; /* is upper dev master */ | |
5e82b4b2 | 2313 | bool linking; /* is the notification for link or unlink */ |
29bf24af | 2314 | void *upper_info; /* upper dev info */ |
0e4ead9d JP |
2315 | }; |
2316 | ||
04d48266 JP |
2317 | struct netdev_notifier_changelowerstate_info { |
2318 | struct netdev_notifier_info info; /* must be first */ | |
2319 | void *lower_state_info; /* is lower dev state */ | |
2320 | }; | |
2321 | ||
75538c2b CW |
2322 | static inline void netdev_notifier_info_init(struct netdev_notifier_info *info, |
2323 | struct net_device *dev) | |
2324 | { | |
2325 | info->dev = dev; | |
2326 | } | |
2327 | ||
351638e7 JP |
2328 | static inline struct net_device * |
2329 | netdev_notifier_info_to_dev(const struct netdev_notifier_info *info) | |
2330 | { | |
2331 | return info->dev; | |
2332 | } | |
2333 | ||
f629d208 | 2334 | int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
dcfe1421 AW |
2335 | |
2336 | ||
1da177e4 LT |
2337 | extern rwlock_t dev_base_lock; /* Device list lock */ |
2338 | ||
881d966b EB |
2339 | #define for_each_netdev(net, d) \ |
2340 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
dcbccbd4 EB |
2341 | #define for_each_netdev_reverse(net, d) \ |
2342 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) | |
c6d14c84 ED |
2343 | #define for_each_netdev_rcu(net, d) \ |
2344 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b EB |
2345 | #define for_each_netdev_safe(net, d, n) \ |
2346 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
2347 | #define for_each_netdev_continue(net, d) \ | |
2348 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
254245d2 | 2349 | #define for_each_netdev_continue_rcu(net, d) \ |
2350 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) | |
8a7fbfab | 2351 | #define for_each_netdev_in_bond_rcu(bond, slave) \ |
2352 | for_each_netdev_rcu(&init_net, slave) \ | |
4ccce02e | 2353 | if (netdev_master_upper_dev_get_rcu(slave) == (bond)) |
881d966b | 2354 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
7562f876 | 2355 | |
a050c33f DL |
2356 | static inline struct net_device *next_net_device(struct net_device *dev) |
2357 | { | |
2358 | struct list_head *lh; | |
2359 | struct net *net; | |
2360 | ||
c346dca1 | 2361 | net = dev_net(dev); |
a050c33f DL |
2362 | lh = dev->dev_list.next; |
2363 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2364 | } | |
2365 | ||
ce81b76a ED |
2366 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
2367 | { | |
2368 | struct list_head *lh; | |
2369 | struct net *net; | |
2370 | ||
2371 | net = dev_net(dev); | |
ccf43438 | 2372 | lh = rcu_dereference(list_next_rcu(&dev->dev_list)); |
ce81b76a ED |
2373 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
2374 | } | |
2375 | ||
a050c33f DL |
2376 | static inline struct net_device *first_net_device(struct net *net) |
2377 | { | |
2378 | return list_empty(&net->dev_base_head) ? NULL : | |
2379 | net_device_entry(net->dev_base_head.next); | |
2380 | } | |
7562f876 | 2381 | |
ccf43438 ED |
2382 | static inline struct net_device *first_net_device_rcu(struct net *net) |
2383 | { | |
2384 | struct list_head *lh = rcu_dereference(list_next_rcu(&net->dev_base_head)); | |
2385 | ||
2386 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2387 | } | |
2388 | ||
f629d208 JP |
2389 | int netdev_boot_setup_check(struct net_device *dev); |
2390 | unsigned long netdev_boot_base(const char *prefix, int unit); | |
2391 | struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, | |
2392 | const char *hwaddr); | |
2393 | struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
2394 | struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
2395 | void dev_add_pack(struct packet_type *pt); | |
2396 | void dev_remove_pack(struct packet_type *pt); | |
2397 | void __dev_remove_pack(struct packet_type *pt); | |
2398 | void dev_add_offload(struct packet_offload *po); | |
2399 | void dev_remove_offload(struct packet_offload *po); | |
f629d208 | 2400 | |
a54acb3a | 2401 | int dev_get_iflink(const struct net_device *dev); |
fc4099f1 | 2402 | int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb); |
6c555490 WC |
2403 | struct net_device *__dev_get_by_flags(struct net *net, unsigned short flags, |
2404 | unsigned short mask); | |
f629d208 JP |
2405 | struct net_device *dev_get_by_name(struct net *net, const char *name); |
2406 | struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); | |
2407 | struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
2408 | int dev_alloc_name(struct net_device *dev, const char *name); | |
2409 | int dev_open(struct net_device *dev); | |
2410 | int dev_close(struct net_device *dev); | |
99c4a26a | 2411 | int dev_close_many(struct list_head *head, bool unlink); |
f629d208 | 2412 | void dev_disable_lro(struct net_device *dev); |
0c4b51f0 | 2413 | int dev_loopback_xmit(struct net *net, struct sock *sk, struct sk_buff *newskb); |
2b4aa3ce | 2414 | int dev_queue_xmit(struct sk_buff *skb); |
f663dd9a | 2415 | int dev_queue_xmit_accel(struct sk_buff *skb, void *accel_priv); |
f629d208 JP |
2416 | int register_netdevice(struct net_device *dev); |
2417 | void unregister_netdevice_queue(struct net_device *dev, struct list_head *head); | |
2418 | void unregister_netdevice_many(struct list_head *head); | |
44a0873d ED |
2419 | static inline void unregister_netdevice(struct net_device *dev) |
2420 | { | |
2421 | unregister_netdevice_queue(dev, NULL); | |
2422 | } | |
2423 | ||
f629d208 JP |
2424 | int netdev_refcnt_read(const struct net_device *dev); |
2425 | void free_netdev(struct net_device *dev); | |
74d332c1 | 2426 | void netdev_freemem(struct net_device *dev); |
f629d208 JP |
2427 | void synchronize_net(void); |
2428 | int init_dummy_netdev(struct net_device *dev); | |
937f1ba5 | 2429 | |
f60e5990 | 2430 | DECLARE_PER_CPU(int, xmit_recursion); |
a70b506e DB |
2431 | #define XMIT_RECURSION_LIMIT 10 |
2432 | ||
f60e5990 | 2433 | static inline int dev_recursion_level(void) |
2434 | { | |
2435 | return this_cpu_read(xmit_recursion); | |
2436 | } | |
2437 | ||
f629d208 JP |
2438 | struct net_device *dev_get_by_index(struct net *net, int ifindex); |
2439 | struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
2440 | struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); | |
2441 | int netdev_get_name(struct net *net, char *name, int ifindex); | |
2442 | int dev_restart(struct net_device *dev); | |
f629d208 | 2443 | int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb); |
86911732 HX |
2444 | |
2445 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) | |
2446 | { | |
2447 | return NAPI_GRO_CB(skb)->data_offset; | |
2448 | } | |
2449 | ||
2450 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) | |
2451 | { | |
2452 | return skb->len - NAPI_GRO_CB(skb)->data_offset; | |
2453 | } | |
2454 | ||
2455 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) | |
2456 | { | |
2457 | NAPI_GRO_CB(skb)->data_offset += len; | |
2458 | } | |
2459 | ||
a5b1cf28 HX |
2460 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
2461 | unsigned int offset) | |
86911732 | 2462 | { |
a5b1cf28 HX |
2463 | return NAPI_GRO_CB(skb)->frag0 + offset; |
2464 | } | |
78a478d0 | 2465 | |
a5b1cf28 HX |
2466 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
2467 | { | |
2468 | return NAPI_GRO_CB(skb)->frag0_len < hlen; | |
2469 | } | |
78a478d0 | 2470 | |
57ea52a8 HX |
2471 | static inline void skb_gro_frag0_invalidate(struct sk_buff *skb) |
2472 | { | |
2473 | NAPI_GRO_CB(skb)->frag0 = NULL; | |
2474 | NAPI_GRO_CB(skb)->frag0_len = 0; | |
2475 | } | |
2476 | ||
a5b1cf28 HX |
2477 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
2478 | unsigned int offset) | |
2479 | { | |
17dd759c HX |
2480 | if (!pskb_may_pull(skb, hlen)) |
2481 | return NULL; | |
2482 | ||
57ea52a8 | 2483 | skb_gro_frag0_invalidate(skb); |
17dd759c | 2484 | return skb->data + offset; |
86911732 | 2485 | } |
1da177e4 | 2486 | |
36e7b1b8 HX |
2487 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
2488 | { | |
78d3fd0b HX |
2489 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
2490 | skb_network_offset(skb); | |
36e7b1b8 HX |
2491 | } |
2492 | ||
bf5a755f JC |
2493 | static inline void skb_gro_postpull_rcsum(struct sk_buff *skb, |
2494 | const void *start, unsigned int len) | |
2495 | { | |
573e8fca | 2496 | if (NAPI_GRO_CB(skb)->csum_valid) |
bf5a755f JC |
2497 | NAPI_GRO_CB(skb)->csum = csum_sub(NAPI_GRO_CB(skb)->csum, |
2498 | csum_partial(start, len, 0)); | |
2499 | } | |
2500 | ||
573e8fca TH |
2501 | /* GRO checksum functions. These are logical equivalents of the normal |
2502 | * checksum functions (in skbuff.h) except that they operate on the GRO | |
2503 | * offsets and fields in sk_buff. | |
2504 | */ | |
2505 | ||
2506 | __sum16 __skb_gro_checksum_complete(struct sk_buff *skb); | |
2507 | ||
15e2396d TH |
2508 | static inline bool skb_at_gro_remcsum_start(struct sk_buff *skb) |
2509 | { | |
b7fe10e5 | 2510 | return (NAPI_GRO_CB(skb)->gro_remcsum_start == skb_gro_offset(skb)); |
15e2396d TH |
2511 | } |
2512 | ||
573e8fca TH |
2513 | static inline bool __skb_gro_checksum_validate_needed(struct sk_buff *skb, |
2514 | bool zero_okay, | |
2515 | __sum16 check) | |
2516 | { | |
6edec0e6 TH |
2517 | return ((skb->ip_summed != CHECKSUM_PARTIAL || |
2518 | skb_checksum_start_offset(skb) < | |
2519 | skb_gro_offset(skb)) && | |
15e2396d | 2520 | !skb_at_gro_remcsum_start(skb) && |
662880f4 | 2521 | NAPI_GRO_CB(skb)->csum_cnt == 0 && |
573e8fca TH |
2522 | (!zero_okay || check)); |
2523 | } | |
2524 | ||
2525 | static inline __sum16 __skb_gro_checksum_validate_complete(struct sk_buff *skb, | |
2526 | __wsum psum) | |
2527 | { | |
2528 | if (NAPI_GRO_CB(skb)->csum_valid && | |
2529 | !csum_fold(csum_add(psum, NAPI_GRO_CB(skb)->csum))) | |
2530 | return 0; | |
2531 | ||
2532 | NAPI_GRO_CB(skb)->csum = psum; | |
2533 | ||
2534 | return __skb_gro_checksum_complete(skb); | |
2535 | } | |
2536 | ||
573e8fca TH |
2537 | static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb) |
2538 | { | |
662880f4 TH |
2539 | if (NAPI_GRO_CB(skb)->csum_cnt > 0) { |
2540 | /* Consume a checksum from CHECKSUM_UNNECESSARY */ | |
2541 | NAPI_GRO_CB(skb)->csum_cnt--; | |
2542 | } else { | |
2543 | /* Update skb for CHECKSUM_UNNECESSARY and csum_level when we | |
2544 | * verified a new top level checksum or an encapsulated one | |
2545 | * during GRO. This saves work if we fallback to normal path. | |
2546 | */ | |
2547 | __skb_incr_checksum_unnecessary(skb); | |
573e8fca TH |
2548 | } |
2549 | } | |
2550 | ||
2551 | #define __skb_gro_checksum_validate(skb, proto, zero_okay, check, \ | |
2552 | compute_pseudo) \ | |
2553 | ({ \ | |
2554 | __sum16 __ret = 0; \ | |
2555 | if (__skb_gro_checksum_validate_needed(skb, zero_okay, check)) \ | |
2556 | __ret = __skb_gro_checksum_validate_complete(skb, \ | |
2557 | compute_pseudo(skb, proto)); \ | |
5a212329 TH |
2558 | if (__ret) \ |
2559 | __skb_mark_checksum_bad(skb); \ | |
2560 | else \ | |
573e8fca TH |
2561 | skb_gro_incr_csum_unnecessary(skb); \ |
2562 | __ret; \ | |
2563 | }) | |
2564 | ||
2565 | #define skb_gro_checksum_validate(skb, proto, compute_pseudo) \ | |
2566 | __skb_gro_checksum_validate(skb, proto, false, 0, compute_pseudo) | |
2567 | ||
2568 | #define skb_gro_checksum_validate_zero_check(skb, proto, check, \ | |
2569 | compute_pseudo) \ | |
2570 | __skb_gro_checksum_validate(skb, proto, true, check, compute_pseudo) | |
2571 | ||
2572 | #define skb_gro_checksum_simple_validate(skb) \ | |
2573 | __skb_gro_checksum_validate(skb, 0, false, 0, null_compute_pseudo) | |
2574 | ||
d96535a1 TH |
2575 | static inline bool __skb_gro_checksum_convert_check(struct sk_buff *skb) |
2576 | { | |
2577 | return (NAPI_GRO_CB(skb)->csum_cnt == 0 && | |
2578 | !NAPI_GRO_CB(skb)->csum_valid); | |
2579 | } | |
2580 | ||
2581 | static inline void __skb_gro_checksum_convert(struct sk_buff *skb, | |
2582 | __sum16 check, __wsum pseudo) | |
2583 | { | |
2584 | NAPI_GRO_CB(skb)->csum = ~pseudo; | |
2585 | NAPI_GRO_CB(skb)->csum_valid = 1; | |
2586 | } | |
2587 | ||
2588 | #define skb_gro_checksum_try_convert(skb, proto, check, compute_pseudo) \ | |
2589 | do { \ | |
2590 | if (__skb_gro_checksum_convert_check(skb)) \ | |
2591 | __skb_gro_checksum_convert(skb, check, \ | |
2592 | compute_pseudo(skb, proto)); \ | |
2593 | } while (0) | |
2594 | ||
26c4f7da TH |
2595 | struct gro_remcsum { |
2596 | int offset; | |
2597 | __wsum delta; | |
2598 | }; | |
2599 | ||
2600 | static inline void skb_gro_remcsum_init(struct gro_remcsum *grc) | |
2601 | { | |
846cd667 | 2602 | grc->offset = 0; |
26c4f7da TH |
2603 | grc->delta = 0; |
2604 | } | |
2605 | ||
b7fe10e5 TH |
2606 | static inline void *skb_gro_remcsum_process(struct sk_buff *skb, void *ptr, |
2607 | unsigned int off, size_t hdrlen, | |
2608 | int start, int offset, | |
2609 | struct gro_remcsum *grc, | |
2610 | bool nopartial) | |
dcdc8994 TH |
2611 | { |
2612 | __wsum delta; | |
b7fe10e5 | 2613 | size_t plen = hdrlen + max_t(size_t, offset + sizeof(u16), start); |
dcdc8994 TH |
2614 | |
2615 | BUG_ON(!NAPI_GRO_CB(skb)->csum_valid); | |
2616 | ||
15e2396d | 2617 | if (!nopartial) { |
b7fe10e5 TH |
2618 | NAPI_GRO_CB(skb)->gro_remcsum_start = off + hdrlen + start; |
2619 | return ptr; | |
2620 | } | |
2621 | ||
2622 | ptr = skb_gro_header_fast(skb, off); | |
2623 | if (skb_gro_header_hard(skb, off + plen)) { | |
2624 | ptr = skb_gro_header_slow(skb, off + plen, off); | |
2625 | if (!ptr) | |
2626 | return NULL; | |
15e2396d TH |
2627 | } |
2628 | ||
b7fe10e5 TH |
2629 | delta = remcsum_adjust(ptr + hdrlen, NAPI_GRO_CB(skb)->csum, |
2630 | start, offset); | |
dcdc8994 TH |
2631 | |
2632 | /* Adjust skb->csum since we changed the packet */ | |
dcdc8994 | 2633 | NAPI_GRO_CB(skb)->csum = csum_add(NAPI_GRO_CB(skb)->csum, delta); |
26c4f7da | 2634 | |
b7fe10e5 | 2635 | grc->offset = off + hdrlen + offset; |
26c4f7da | 2636 | grc->delta = delta; |
b7fe10e5 TH |
2637 | |
2638 | return ptr; | |
dcdc8994 TH |
2639 | } |
2640 | ||
26c4f7da TH |
2641 | static inline void skb_gro_remcsum_cleanup(struct sk_buff *skb, |
2642 | struct gro_remcsum *grc) | |
2643 | { | |
b7fe10e5 TH |
2644 | void *ptr; |
2645 | size_t plen = grc->offset + sizeof(u16); | |
2646 | ||
26c4f7da TH |
2647 | if (!grc->delta) |
2648 | return; | |
2649 | ||
b7fe10e5 TH |
2650 | ptr = skb_gro_header_fast(skb, grc->offset); |
2651 | if (skb_gro_header_hard(skb, grc->offset + sizeof(u16))) { | |
2652 | ptr = skb_gro_header_slow(skb, plen, grc->offset); | |
2653 | if (!ptr) | |
2654 | return; | |
2655 | } | |
2656 | ||
2657 | remcsum_unadjust((__sum16 *)ptr, grc->delta); | |
26c4f7da | 2658 | } |
dcdc8994 | 2659 | |
25393d3f SK |
2660 | #ifdef CONFIG_XFRM_OFFLOAD |
2661 | static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff **pp, int flush) | |
2662 | { | |
2663 | if (PTR_ERR(pp) != -EINPROGRESS) | |
2664 | NAPI_GRO_CB(skb)->flush |= flush; | |
2665 | } | |
2666 | #else | |
5f114163 SK |
2667 | static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff **pp, int flush) |
2668 | { | |
2669 | NAPI_GRO_CB(skb)->flush |= flush; | |
2670 | } | |
25393d3f | 2671 | #endif |
5f114163 | 2672 | |
0c4e8581 SH |
2673 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
2674 | unsigned short type, | |
3b04ddde | 2675 | const void *daddr, const void *saddr, |
95c96174 | 2676 | unsigned int len) |
0c4e8581 | 2677 | { |
f1ecfd5d | 2678 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 2679 | return 0; |
3b04ddde SH |
2680 | |
2681 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
2682 | } |
2683 | ||
b95cce35 SH |
2684 | static inline int dev_parse_header(const struct sk_buff *skb, |
2685 | unsigned char *haddr) | |
2686 | { | |
2687 | const struct net_device *dev = skb->dev; | |
2688 | ||
1b83336b | 2689 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 2690 | return 0; |
3b04ddde | 2691 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
2692 | } |
2693 | ||
2793a23a WB |
2694 | /* ll_header must have at least hard_header_len allocated */ |
2695 | static inline bool dev_validate_header(const struct net_device *dev, | |
2696 | char *ll_header, int len) | |
2697 | { | |
2698 | if (likely(len >= dev->hard_header_len)) | |
2699 | return true; | |
217e6fa2 WB |
2700 | if (len < dev->min_header_len) |
2701 | return false; | |
2793a23a WB |
2702 | |
2703 | if (capable(CAP_SYS_RAWIO)) { | |
2704 | memset(ll_header + len, 0, dev->hard_header_len - len); | |
2705 | return true; | |
2706 | } | |
2707 | ||
2708 | if (dev->header_ops && dev->header_ops->validate) | |
2709 | return dev->header_ops->validate(ll_header, len); | |
2710 | ||
2711 | return false; | |
2712 | } | |
2713 | ||
1da177e4 | 2714 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
f629d208 | 2715 | int register_gifconf(unsigned int family, gifconf_func_t *gifconf); |
1da177e4 LT |
2716 | static inline int unregister_gifconf(unsigned int family) |
2717 | { | |
2718 | return register_gifconf(family, NULL); | |
2719 | } | |
2720 | ||
99bbc707 | 2721 | #ifdef CONFIG_NET_FLOW_LIMIT |
5f121b9a | 2722 | #define FLOW_LIMIT_HISTORY (1 << 7) /* must be ^2 and !overflow buckets */ |
99bbc707 WB |
2723 | struct sd_flow_limit { |
2724 | u64 count; | |
2725 | unsigned int num_buckets; | |
2726 | unsigned int history_head; | |
2727 | u16 history[FLOW_LIMIT_HISTORY]; | |
2728 | u8 buckets[]; | |
2729 | }; | |
2730 | ||
2731 | extern int netdev_flow_limit_table_len; | |
2732 | #endif /* CONFIG_NET_FLOW_LIMIT */ | |
2733 | ||
1da177e4 | 2734 | /* |
5e82b4b2 | 2735 | * Incoming packets are placed on per-CPU queues |
1da177e4 | 2736 | */ |
d94d9fee | 2737 | struct softnet_data { |
1da177e4 | 2738 | struct list_head poll_list; |
6e7676c1 | 2739 | struct sk_buff_head process_queue; |
1da177e4 | 2740 | |
dee42870 | 2741 | /* stats */ |
cd7b5396 DM |
2742 | unsigned int processed; |
2743 | unsigned int time_squeeze; | |
cd7b5396 | 2744 | unsigned int received_rps; |
fd793d89 | 2745 | #ifdef CONFIG_RPS |
88751275 | 2746 | struct softnet_data *rps_ipi_list; |
4cdb1e2e ED |
2747 | #endif |
2748 | #ifdef CONFIG_NET_FLOW_LIMIT | |
2749 | struct sd_flow_limit __rcu *flow_limit; | |
2750 | #endif | |
2751 | struct Qdisc *output_queue; | |
2752 | struct Qdisc **output_queue_tailp; | |
2753 | struct sk_buff *completion_queue; | |
88751275 | 2754 | |
4cdb1e2e | 2755 | #ifdef CONFIG_RPS |
501e7ef5 ED |
2756 | /* input_queue_head should be written by cpu owning this struct, |
2757 | * and only read by other cpus. Worth using a cache line. | |
2758 | */ | |
2759 | unsigned int input_queue_head ____cacheline_aligned_in_smp; | |
2760 | ||
2761 | /* Elements below can be accessed between CPUs for RPS/RFS */ | |
0a9627f2 | 2762 | struct call_single_data csd ____cacheline_aligned_in_smp; |
88751275 ED |
2763 | struct softnet_data *rps_ipi_next; |
2764 | unsigned int cpu; | |
76cc8b13 | 2765 | unsigned int input_queue_tail; |
1e94d72f | 2766 | #endif |
95c96174 | 2767 | unsigned int dropped; |
0a9627f2 | 2768 | struct sk_buff_head input_pkt_queue; |
bea3348e | 2769 | struct napi_struct backlog; |
99bbc707 | 2770 | |
1da177e4 LT |
2771 | }; |
2772 | ||
76cc8b13 | 2773 | static inline void input_queue_head_incr(struct softnet_data *sd) |
fec5e652 TH |
2774 | { |
2775 | #ifdef CONFIG_RPS | |
76cc8b13 TH |
2776 | sd->input_queue_head++; |
2777 | #endif | |
2778 | } | |
2779 | ||
2780 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, | |
2781 | unsigned int *qtail) | |
2782 | { | |
2783 | #ifdef CONFIG_RPS | |
2784 | *qtail = ++sd->input_queue_tail; | |
fec5e652 TH |
2785 | #endif |
2786 | } | |
2787 | ||
0a9627f2 | 2788 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
1da177e4 | 2789 | |
f629d208 | 2790 | void __netif_schedule(struct Qdisc *q); |
46e5da40 | 2791 | void netif_schedule_queue(struct netdev_queue *txq); |
86d804e1 | 2792 | |
fd2ea0a7 DM |
2793 | static inline void netif_tx_schedule_all(struct net_device *dev) |
2794 | { | |
2795 | unsigned int i; | |
2796 | ||
2797 | for (i = 0; i < dev->num_tx_queues; i++) | |
2798 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
2799 | } | |
2800 | ||
f9a7cbbf | 2801 | static __always_inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
d29f749e | 2802 | { |
73466498 | 2803 | clear_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
2804 | } |
2805 | ||
bea3348e SH |
2806 | /** |
2807 | * netif_start_queue - allow transmit | |
2808 | * @dev: network device | |
2809 | * | |
2810 | * Allow upper layers to call the device hard_start_xmit routine. | |
2811 | */ | |
1da177e4 LT |
2812 | static inline void netif_start_queue(struct net_device *dev) |
2813 | { | |
e8a0464c | 2814 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2815 | } |
2816 | ||
fd2ea0a7 DM |
2817 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
2818 | { | |
2819 | unsigned int i; | |
2820 | ||
2821 | for (i = 0; i < dev->num_tx_queues; i++) { | |
2822 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
2823 | netif_tx_start_queue(txq); | |
2824 | } | |
2825 | } | |
2826 | ||
46e5da40 | 2827 | void netif_tx_wake_queue(struct netdev_queue *dev_queue); |
79d16385 | 2828 | |
d29f749e DJ |
2829 | /** |
2830 | * netif_wake_queue - restart transmit | |
2831 | * @dev: network device | |
2832 | * | |
2833 | * Allow upper layers to call the device hard_start_xmit routine. | |
2834 | * Used for flow control when transmit resources are available. | |
2835 | */ | |
79d16385 DM |
2836 | static inline void netif_wake_queue(struct net_device *dev) |
2837 | { | |
e8a0464c | 2838 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2839 | } |
2840 | ||
fd2ea0a7 DM |
2841 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
2842 | { | |
2843 | unsigned int i; | |
2844 | ||
2845 | for (i = 0; i < dev->num_tx_queues; i++) { | |
2846 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
2847 | netif_tx_wake_queue(txq); | |
2848 | } | |
2849 | } | |
2850 | ||
f9a7cbbf | 2851 | static __always_inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
d29f749e | 2852 | { |
73466498 | 2853 | set_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
2854 | } |
2855 | ||
bea3348e SH |
2856 | /** |
2857 | * netif_stop_queue - stop transmitted packets | |
2858 | * @dev: network device | |
2859 | * | |
2860 | * Stop upper layers calling the device hard_start_xmit routine. | |
2861 | * Used for flow control when transmit resources are unavailable. | |
2862 | */ | |
1da177e4 LT |
2863 | static inline void netif_stop_queue(struct net_device *dev) |
2864 | { | |
e8a0464c | 2865 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2866 | } |
2867 | ||
a2029240 | 2868 | void netif_tx_stop_all_queues(struct net_device *dev); |
fd2ea0a7 | 2869 | |
4d29515f | 2870 | static inline bool netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
d29f749e | 2871 | { |
73466498 | 2872 | return test_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
2873 | } |
2874 | ||
bea3348e SH |
2875 | /** |
2876 | * netif_queue_stopped - test if transmit queue is flowblocked | |
2877 | * @dev: network device | |
2878 | * | |
2879 | * Test if transmit queue on device is currently unable to send. | |
2880 | */ | |
4d29515f | 2881 | static inline bool netif_queue_stopped(const struct net_device *dev) |
1da177e4 | 2882 | { |
e8a0464c | 2883 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2884 | } |
2885 | ||
4d29515f | 2886 | static inline bool netif_xmit_stopped(const struct netdev_queue *dev_queue) |
c3f26a26 | 2887 | { |
73466498 TH |
2888 | return dev_queue->state & QUEUE_STATE_ANY_XOFF; |
2889 | } | |
2890 | ||
8e2f1a63 DB |
2891 | static inline bool |
2892 | netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue) | |
73466498 TH |
2893 | { |
2894 | return dev_queue->state & QUEUE_STATE_ANY_XOFF_OR_FROZEN; | |
2895 | } | |
2896 | ||
8e2f1a63 DB |
2897 | static inline bool |
2898 | netif_xmit_frozen_or_drv_stopped(const struct netdev_queue *dev_queue) | |
2899 | { | |
2900 | return dev_queue->state & QUEUE_STATE_DRV_XOFF_OR_FROZEN; | |
2901 | } | |
2902 | ||
53511453 ED |
2903 | /** |
2904 | * netdev_txq_bql_enqueue_prefetchw - prefetch bql data for write | |
2905 | * @dev_queue: pointer to transmit queue | |
2906 | * | |
2907 | * BQL enabled drivers might use this helper in their ndo_start_xmit(), | |
5e82b4b2 | 2908 | * to give appropriate hint to the CPU. |
53511453 ED |
2909 | */ |
2910 | static inline void netdev_txq_bql_enqueue_prefetchw(struct netdev_queue *dev_queue) | |
2911 | { | |
2912 | #ifdef CONFIG_BQL | |
2913 | prefetchw(&dev_queue->dql.num_queued); | |
2914 | #endif | |
2915 | } | |
2916 | ||
2917 | /** | |
2918 | * netdev_txq_bql_complete_prefetchw - prefetch bql data for write | |
2919 | * @dev_queue: pointer to transmit queue | |
2920 | * | |
2921 | * BQL enabled drivers might use this helper in their TX completion path, | |
5e82b4b2 | 2922 | * to give appropriate hint to the CPU. |
53511453 ED |
2923 | */ |
2924 | static inline void netdev_txq_bql_complete_prefetchw(struct netdev_queue *dev_queue) | |
2925 | { | |
2926 | #ifdef CONFIG_BQL | |
2927 | prefetchw(&dev_queue->dql.limit); | |
2928 | #endif | |
2929 | } | |
2930 | ||
c5d67bd7 TH |
2931 | static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, |
2932 | unsigned int bytes) | |
2933 | { | |
114cf580 TH |
2934 | #ifdef CONFIG_BQL |
2935 | dql_queued(&dev_queue->dql, bytes); | |
b37c0fbe AD |
2936 | |
2937 | if (likely(dql_avail(&dev_queue->dql) >= 0)) | |
2938 | return; | |
2939 | ||
2940 | set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
2941 | ||
2942 | /* | |
2943 | * The XOFF flag must be set before checking the dql_avail below, | |
2944 | * because in netdev_tx_completed_queue we update the dql_completed | |
2945 | * before checking the XOFF flag. | |
2946 | */ | |
2947 | smp_mb(); | |
2948 | ||
2949 | /* check again in case another CPU has just made room avail */ | |
2950 | if (unlikely(dql_avail(&dev_queue->dql) >= 0)) | |
2951 | clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
114cf580 | 2952 | #endif |
c5d67bd7 TH |
2953 | } |
2954 | ||
0042d0c8 FF |
2955 | /** |
2956 | * netdev_sent_queue - report the number of bytes queued to hardware | |
2957 | * @dev: network device | |
2958 | * @bytes: number of bytes queued to the hardware device queue | |
2959 | * | |
2960 | * Report the number of bytes queued for sending/completion to the network | |
2961 | * device hardware queue. @bytes should be a good approximation and should | |
2962 | * exactly match netdev_completed_queue() @bytes | |
2963 | */ | |
c5d67bd7 TH |
2964 | static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes) |
2965 | { | |
2966 | netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes); | |
2967 | } | |
2968 | ||
2969 | static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue, | |
95c96174 | 2970 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 | 2971 | { |
114cf580 | 2972 | #ifdef CONFIG_BQL |
b37c0fbe AD |
2973 | if (unlikely(!bytes)) |
2974 | return; | |
2975 | ||
2976 | dql_completed(&dev_queue->dql, bytes); | |
2977 | ||
2978 | /* | |
2979 | * Without the memory barrier there is a small possiblity that | |
2980 | * netdev_tx_sent_queue will miss the update and cause the queue to | |
2981 | * be stopped forever | |
2982 | */ | |
2983 | smp_mb(); | |
2984 | ||
2985 | if (dql_avail(&dev_queue->dql) < 0) | |
2986 | return; | |
2987 | ||
2988 | if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state)) | |
2989 | netif_schedule_queue(dev_queue); | |
114cf580 | 2990 | #endif |
c5d67bd7 TH |
2991 | } |
2992 | ||
0042d0c8 FF |
2993 | /** |
2994 | * netdev_completed_queue - report bytes and packets completed by device | |
2995 | * @dev: network device | |
2996 | * @pkts: actual number of packets sent over the medium | |
2997 | * @bytes: actual number of bytes sent over the medium | |
2998 | * | |
2999 | * Report the number of bytes and packets transmitted by the network device | |
3000 | * hardware queue over the physical medium, @bytes must exactly match the | |
3001 | * @bytes amount passed to netdev_sent_queue() | |
3002 | */ | |
c5d67bd7 | 3003 | static inline void netdev_completed_queue(struct net_device *dev, |
95c96174 | 3004 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 TH |
3005 | { |
3006 | netdev_tx_completed_queue(netdev_get_tx_queue(dev, 0), pkts, bytes); | |
3007 | } | |
3008 | ||
3009 | static inline void netdev_tx_reset_queue(struct netdev_queue *q) | |
3010 | { | |
114cf580 | 3011 | #ifdef CONFIG_BQL |
5c490354 | 3012 | clear_bit(__QUEUE_STATE_STACK_XOFF, &q->state); |
114cf580 TH |
3013 | dql_reset(&q->dql); |
3014 | #endif | |
c5d67bd7 TH |
3015 | } |
3016 | ||
0042d0c8 FF |
3017 | /** |
3018 | * netdev_reset_queue - reset the packets and bytes count of a network device | |
3019 | * @dev_queue: network device | |
3020 | * | |
3021 | * Reset the bytes and packet count of a network device and clear the | |
3022 | * software flow control OFF bit for this network device | |
3023 | */ | |
c5d67bd7 TH |
3024 | static inline void netdev_reset_queue(struct net_device *dev_queue) |
3025 | { | |
3026 | netdev_tx_reset_queue(netdev_get_tx_queue(dev_queue, 0)); | |
c3f26a26 DM |
3027 | } |
3028 | ||
b9507bda DB |
3029 | /** |
3030 | * netdev_cap_txqueue - check if selected tx queue exceeds device queues | |
3031 | * @dev: network device | |
3032 | * @queue_index: given tx queue index | |
3033 | * | |
3034 | * Returns 0 if given tx queue index >= number of device tx queues, | |
3035 | * otherwise returns the originally passed tx queue index. | |
3036 | */ | |
3037 | static inline u16 netdev_cap_txqueue(struct net_device *dev, u16 queue_index) | |
3038 | { | |
3039 | if (unlikely(queue_index >= dev->real_num_tx_queues)) { | |
3040 | net_warn_ratelimited("%s selects TX queue %d, but real number of TX queues is %d\n", | |
3041 | dev->name, queue_index, | |
3042 | dev->real_num_tx_queues); | |
3043 | return 0; | |
3044 | } | |
3045 | ||
3046 | return queue_index; | |
3047 | } | |
3048 | ||
bea3348e SH |
3049 | /** |
3050 | * netif_running - test if up | |
3051 | * @dev: network device | |
3052 | * | |
3053 | * Test if the device has been brought up. | |
3054 | */ | |
4d29515f | 3055 | static inline bool netif_running(const struct net_device *dev) |
1da177e4 LT |
3056 | { |
3057 | return test_bit(__LINK_STATE_START, &dev->state); | |
3058 | } | |
3059 | ||
f25f4e44 | 3060 | /* |
5e82b4b2 | 3061 | * Routines to manage the subqueues on a device. We only need start, |
f25f4e44 PWJ |
3062 | * stop, and a check if it's stopped. All other device management is |
3063 | * done at the overall netdevice level. | |
3064 | * Also test the device if we're multiqueue. | |
3065 | */ | |
bea3348e SH |
3066 | |
3067 | /** | |
3068 | * netif_start_subqueue - allow sending packets on subqueue | |
3069 | * @dev: network device | |
3070 | * @queue_index: sub queue index | |
3071 | * | |
3072 | * Start individual transmit queue of a device with multiple transmit queues. | |
3073 | */ | |
f25f4e44 PWJ |
3074 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
3075 | { | |
fd2ea0a7 | 3076 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3077 | |
3078 | netif_tx_start_queue(txq); | |
f25f4e44 PWJ |
3079 | } |
3080 | ||
bea3348e SH |
3081 | /** |
3082 | * netif_stop_subqueue - stop sending packets on subqueue | |
3083 | * @dev: network device | |
3084 | * @queue_index: sub queue index | |
3085 | * | |
3086 | * Stop individual transmit queue of a device with multiple transmit queues. | |
3087 | */ | |
f25f4e44 PWJ |
3088 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
3089 | { | |
fd2ea0a7 | 3090 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f | 3091 | netif_tx_stop_queue(txq); |
f25f4e44 PWJ |
3092 | } |
3093 | ||
bea3348e SH |
3094 | /** |
3095 | * netif_subqueue_stopped - test status of subqueue | |
3096 | * @dev: network device | |
3097 | * @queue_index: sub queue index | |
3098 | * | |
3099 | * Check individual transmit queue of a device with multiple transmit queues. | |
3100 | */ | |
4d29515f DM |
3101 | static inline bool __netif_subqueue_stopped(const struct net_device *dev, |
3102 | u16 queue_index) | |
f25f4e44 | 3103 | { |
fd2ea0a7 | 3104 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3105 | |
3106 | return netif_tx_queue_stopped(txq); | |
f25f4e44 PWJ |
3107 | } |
3108 | ||
4d29515f DM |
3109 | static inline bool netif_subqueue_stopped(const struct net_device *dev, |
3110 | struct sk_buff *skb) | |
668f895a PE |
3111 | { |
3112 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
3113 | } | |
bea3348e | 3114 | |
738b35cc FF |
3115 | /** |
3116 | * netif_wake_subqueue - allow sending packets on subqueue | |
3117 | * @dev: network device | |
3118 | * @queue_index: sub queue index | |
3119 | * | |
3120 | * Resume individual transmit queue of a device with multiple transmit queues. | |
3121 | */ | |
3122 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) | |
3123 | { | |
3124 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); | |
3125 | ||
3126 | netif_tx_wake_queue(txq); | |
3127 | } | |
f25f4e44 | 3128 | |
537c00de | 3129 | #ifdef CONFIG_XPS |
53af53ae | 3130 | int netif_set_xps_queue(struct net_device *dev, const struct cpumask *mask, |
f629d208 | 3131 | u16 index); |
537c00de AD |
3132 | #else |
3133 | static inline int netif_set_xps_queue(struct net_device *dev, | |
3573540c | 3134 | const struct cpumask *mask, |
537c00de AD |
3135 | u16 index) |
3136 | { | |
3137 | return 0; | |
3138 | } | |
3139 | #endif | |
3140 | ||
5605c762 JP |
3141 | u16 __skb_tx_hash(const struct net_device *dev, struct sk_buff *skb, |
3142 | unsigned int num_tx_queues); | |
3143 | ||
a3d22a68 VZ |
3144 | /* |
3145 | * Returns a Tx hash for the given packet when dev->real_num_tx_queues is used | |
3146 | * as a distribution range limit for the returned value. | |
3147 | */ | |
3148 | static inline u16 skb_tx_hash(const struct net_device *dev, | |
0e001614 | 3149 | struct sk_buff *skb) |
a3d22a68 VZ |
3150 | { |
3151 | return __skb_tx_hash(dev, skb, dev->real_num_tx_queues); | |
3152 | } | |
3153 | ||
bea3348e SH |
3154 | /** |
3155 | * netif_is_multiqueue - test if device has multiple transmit queues | |
3156 | * @dev: network device | |
3157 | * | |
3158 | * Check if device has multiple transmit queues | |
bea3348e | 3159 | */ |
4d29515f | 3160 | static inline bool netif_is_multiqueue(const struct net_device *dev) |
f25f4e44 | 3161 | { |
a02cec21 | 3162 | return dev->num_tx_queues > 1; |
f25f4e44 | 3163 | } |
1da177e4 | 3164 | |
f629d208 | 3165 | int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq); |
f0796d5c | 3166 | |
a953be53 | 3167 | #ifdef CONFIG_SYSFS |
f629d208 | 3168 | int netif_set_real_num_rx_queues(struct net_device *dev, unsigned int rxq); |
62fe0b40 BH |
3169 | #else |
3170 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, | |
3171 | unsigned int rxq) | |
3172 | { | |
3173 | return 0; | |
3174 | } | |
3175 | #endif | |
3176 | ||
a953be53 MD |
3177 | #ifdef CONFIG_SYSFS |
3178 | static inline unsigned int get_netdev_rx_queue_index( | |
3179 | struct netdev_rx_queue *queue) | |
3180 | { | |
3181 | struct net_device *dev = queue->dev; | |
3182 | int index = queue - dev->_rx; | |
3183 | ||
3184 | BUG_ON(index >= dev->num_rx_queues); | |
3185 | return index; | |
3186 | } | |
3187 | #endif | |
3188 | ||
16917b87 | 3189 | #define DEFAULT_MAX_NUM_RSS_QUEUES (8) |
f629d208 | 3190 | int netif_get_num_default_rss_queues(void); |
16917b87 | 3191 | |
e6247027 ED |
3192 | enum skb_free_reason { |
3193 | SKB_REASON_CONSUMED, | |
3194 | SKB_REASON_DROPPED, | |
3195 | }; | |
3196 | ||
3197 | void __dev_kfree_skb_irq(struct sk_buff *skb, enum skb_free_reason reason); | |
3198 | void __dev_kfree_skb_any(struct sk_buff *skb, enum skb_free_reason reason); | |
1da177e4 | 3199 | |
e6247027 ED |
3200 | /* |
3201 | * It is not allowed to call kfree_skb() or consume_skb() from hardware | |
3202 | * interrupt context or with hardware interrupts being disabled. | |
3203 | * (in_irq() || irqs_disabled()) | |
3204 | * | |
3205 | * We provide four helpers that can be used in following contexts : | |
3206 | * | |
3207 | * dev_kfree_skb_irq(skb) when caller drops a packet from irq context, | |
3208 | * replacing kfree_skb(skb) | |
3209 | * | |
3210 | * dev_consume_skb_irq(skb) when caller consumes a packet from irq context. | |
3211 | * Typically used in place of consume_skb(skb) in TX completion path | |
3212 | * | |
3213 | * dev_kfree_skb_any(skb) when caller doesn't know its current irq context, | |
3214 | * replacing kfree_skb(skb) | |
3215 | * | |
3216 | * dev_consume_skb_any(skb) when caller doesn't know its current irq context, | |
3217 | * and consumed a packet. Used in place of consume_skb(skb) | |
1da177e4 | 3218 | */ |
e6247027 ED |
3219 | static inline void dev_kfree_skb_irq(struct sk_buff *skb) |
3220 | { | |
3221 | __dev_kfree_skb_irq(skb, SKB_REASON_DROPPED); | |
3222 | } | |
3223 | ||
3224 | static inline void dev_consume_skb_irq(struct sk_buff *skb) | |
3225 | { | |
3226 | __dev_kfree_skb_irq(skb, SKB_REASON_CONSUMED); | |
3227 | } | |
3228 | ||
3229 | static inline void dev_kfree_skb_any(struct sk_buff *skb) | |
3230 | { | |
3231 | __dev_kfree_skb_any(skb, SKB_REASON_DROPPED); | |
3232 | } | |
3233 | ||
3234 | static inline void dev_consume_skb_any(struct sk_buff *skb) | |
3235 | { | |
3236 | __dev_kfree_skb_any(skb, SKB_REASON_CONSUMED); | |
3237 | } | |
1da177e4 | 3238 | |
f629d208 JP |
3239 | int netif_rx(struct sk_buff *skb); |
3240 | int netif_rx_ni(struct sk_buff *skb); | |
04eb4489 | 3241 | int netif_receive_skb(struct sk_buff *skb); |
f629d208 JP |
3242 | gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb); |
3243 | void napi_gro_flush(struct napi_struct *napi, bool flush_old); | |
3244 | struct sk_buff *napi_get_frags(struct napi_struct *napi); | |
3245 | gro_result_t napi_gro_frags(struct napi_struct *napi); | |
bf5a755f JC |
3246 | struct packet_offload *gro_find_receive_by_type(__be16 type); |
3247 | struct packet_offload *gro_find_complete_by_type(__be16 type); | |
76620aaf HX |
3248 | |
3249 | static inline void napi_free_frags(struct napi_struct *napi) | |
3250 | { | |
3251 | kfree_skb(napi->skb); | |
3252 | napi->skb = NULL; | |
3253 | } | |
3254 | ||
24b27fc4 | 3255 | bool netdev_is_rx_handler_busy(struct net_device *dev); |
f629d208 JP |
3256 | int netdev_rx_handler_register(struct net_device *dev, |
3257 | rx_handler_func_t *rx_handler, | |
3258 | void *rx_handler_data); | |
3259 | void netdev_rx_handler_unregister(struct net_device *dev); | |
3260 | ||
3261 | bool dev_valid_name(const char *name); | |
3262 | int dev_ioctl(struct net *net, unsigned int cmd, void __user *); | |
3263 | int dev_ethtool(struct net *net, struct ifreq *); | |
3264 | unsigned int dev_get_flags(const struct net_device *); | |
3265 | int __dev_change_flags(struct net_device *, unsigned int flags); | |
3266 | int dev_change_flags(struct net_device *, unsigned int); | |
cb178190 DM |
3267 | void __dev_notify_flags(struct net_device *, unsigned int old_flags, |
3268 | unsigned int gchanges); | |
f629d208 JP |
3269 | int dev_change_name(struct net_device *, const char *); |
3270 | int dev_set_alias(struct net_device *, const char *, size_t); | |
3271 | int dev_change_net_namespace(struct net_device *, struct net *, const char *); | |
3272 | int dev_set_mtu(struct net_device *, int); | |
3273 | void dev_set_group(struct net_device *, int); | |
3274 | int dev_set_mac_address(struct net_device *, struct sockaddr *); | |
3275 | int dev_change_carrier(struct net_device *, bool new_carrier); | |
3276 | int dev_get_phys_port_id(struct net_device *dev, | |
02637fce | 3277 | struct netdev_phys_item_id *ppid); |
db24a904 DA |
3278 | int dev_get_phys_port_name(struct net_device *dev, |
3279 | char *name, size_t len); | |
d746d707 | 3280 | int dev_change_proto_down(struct net_device *dev, bool proto_down); |
85de8576 | 3281 | int dev_change_xdp_fd(struct net_device *dev, int fd, u32 flags); |
55a93b3e | 3282 | struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev); |
ce93718f DM |
3283 | struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, |
3284 | struct netdev_queue *txq, int *ret); | |
a0265d28 | 3285 | int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
f629d208 | 3286 | int dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
f4b05d27 NA |
3287 | bool is_skb_forwardable(const struct net_device *dev, |
3288 | const struct sk_buff *skb); | |
1da177e4 | 3289 | |
4e3264d2 MKL |
3290 | static __always_inline int ____dev_forward_skb(struct net_device *dev, |
3291 | struct sk_buff *skb) | |
3292 | { | |
3293 | if (skb_orphan_frags(skb, GFP_ATOMIC) || | |
3294 | unlikely(!is_skb_forwardable(dev, skb))) { | |
3295 | atomic_long_inc(&dev->rx_dropped); | |
3296 | kfree_skb(skb); | |
3297 | return NET_RX_DROP; | |
3298 | } | |
3299 | ||
3300 | skb_scrub_packet(skb, true); | |
3301 | skb->priority = 0; | |
3302 | return 0; | |
3303 | } | |
3304 | ||
74b20582 DA |
3305 | void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev); |
3306 | ||
20380731 | 3307 | extern int netdev_budget; |
1da177e4 LT |
3308 | |
3309 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
f629d208 | 3310 | void netdev_run_todo(void); |
1da177e4 | 3311 | |
bea3348e SH |
3312 | /** |
3313 | * dev_put - release reference to device | |
3314 | * @dev: network device | |
3315 | * | |
9ef4429b | 3316 | * Release reference to device to allow it to be freed. |
bea3348e | 3317 | */ |
1da177e4 LT |
3318 | static inline void dev_put(struct net_device *dev) |
3319 | { | |
933393f5 | 3320 | this_cpu_dec(*dev->pcpu_refcnt); |
1da177e4 LT |
3321 | } |
3322 | ||
bea3348e SH |
3323 | /** |
3324 | * dev_hold - get reference to device | |
3325 | * @dev: network device | |
3326 | * | |
9ef4429b | 3327 | * Hold reference to device to keep it from being freed. |
bea3348e | 3328 | */ |
15333061 SH |
3329 | static inline void dev_hold(struct net_device *dev) |
3330 | { | |
933393f5 | 3331 | this_cpu_inc(*dev->pcpu_refcnt); |
15333061 | 3332 | } |
1da177e4 LT |
3333 | |
3334 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
3335 | * and _off may be called from IRQ context, but it is caller | |
3336 | * who is responsible for serialization of these calls. | |
b00055aa SR |
3337 | * |
3338 | * The name carrier is inappropriate, these functions should really be | |
3339 | * called netif_lowerlayer_*() because they represent the state of any | |
3340 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
3341 | */ |
3342 | ||
f629d208 JP |
3343 | void linkwatch_init_dev(struct net_device *dev); |
3344 | void linkwatch_fire_event(struct net_device *dev); | |
3345 | void linkwatch_forget_dev(struct net_device *dev); | |
1da177e4 | 3346 | |
bea3348e SH |
3347 | /** |
3348 | * netif_carrier_ok - test if carrier present | |
3349 | * @dev: network device | |
3350 | * | |
3351 | * Check if carrier is present on device | |
3352 | */ | |
4d29515f | 3353 | static inline bool netif_carrier_ok(const struct net_device *dev) |
1da177e4 LT |
3354 | { |
3355 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
3356 | } | |
3357 | ||
f629d208 | 3358 | unsigned long dev_trans_start(struct net_device *dev); |
9d21493b | 3359 | |
f629d208 | 3360 | void __netdev_watchdog_up(struct net_device *dev); |
1da177e4 | 3361 | |
f629d208 | 3362 | void netif_carrier_on(struct net_device *dev); |
1da177e4 | 3363 | |
f629d208 | 3364 | void netif_carrier_off(struct net_device *dev); |
1da177e4 | 3365 | |
bea3348e SH |
3366 | /** |
3367 | * netif_dormant_on - mark device as dormant. | |
3368 | * @dev: network device | |
3369 | * | |
3370 | * Mark device as dormant (as per RFC2863). | |
3371 | * | |
3372 | * The dormant state indicates that the relevant interface is not | |
3373 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
3374 | * in a "pending" state, waiting for some external event. For "on- | |
3375 | * demand" interfaces, this new state identifies the situation where the | |
3376 | * interface is waiting for events to place it in the up state. | |
bea3348e | 3377 | */ |
b00055aa SR |
3378 | static inline void netif_dormant_on(struct net_device *dev) |
3379 | { | |
3380 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
3381 | linkwatch_fire_event(dev); | |
3382 | } | |
3383 | ||
bea3348e SH |
3384 | /** |
3385 | * netif_dormant_off - set device as not dormant. | |
3386 | * @dev: network device | |
3387 | * | |
3388 | * Device is not in dormant state. | |
3389 | */ | |
b00055aa SR |
3390 | static inline void netif_dormant_off(struct net_device *dev) |
3391 | { | |
3392 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
3393 | linkwatch_fire_event(dev); | |
3394 | } | |
3395 | ||
bea3348e SH |
3396 | /** |
3397 | * netif_dormant - test if carrier present | |
3398 | * @dev: network device | |
3399 | * | |
3400 | * Check if carrier is present on device | |
3401 | */ | |
4d29515f | 3402 | static inline bool netif_dormant(const struct net_device *dev) |
b00055aa SR |
3403 | { |
3404 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
3405 | } | |
3406 | ||
3407 | ||
bea3348e SH |
3408 | /** |
3409 | * netif_oper_up - test if device is operational | |
3410 | * @dev: network device | |
3411 | * | |
3412 | * Check if carrier is operational | |
3413 | */ | |
4d29515f | 3414 | static inline bool netif_oper_up(const struct net_device *dev) |
d94d9fee | 3415 | { |
b00055aa SR |
3416 | return (dev->operstate == IF_OPER_UP || |
3417 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
3418 | } | |
3419 | ||
bea3348e SH |
3420 | /** |
3421 | * netif_device_present - is device available or removed | |
3422 | * @dev: network device | |
3423 | * | |
3424 | * Check if device has not been removed from system. | |
3425 | */ | |
4d29515f | 3426 | static inline bool netif_device_present(struct net_device *dev) |
1da177e4 LT |
3427 | { |
3428 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
3429 | } | |
3430 | ||
f629d208 | 3431 | void netif_device_detach(struct net_device *dev); |
1da177e4 | 3432 | |
f629d208 | 3433 | void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
3434 | |
3435 | /* | |
3436 | * Network interface message level settings | |
3437 | */ | |
1da177e4 LT |
3438 | |
3439 | enum { | |
3440 | NETIF_MSG_DRV = 0x0001, | |
3441 | NETIF_MSG_PROBE = 0x0002, | |
3442 | NETIF_MSG_LINK = 0x0004, | |
3443 | NETIF_MSG_TIMER = 0x0008, | |
3444 | NETIF_MSG_IFDOWN = 0x0010, | |
3445 | NETIF_MSG_IFUP = 0x0020, | |
3446 | NETIF_MSG_RX_ERR = 0x0040, | |
3447 | NETIF_MSG_TX_ERR = 0x0080, | |
3448 | NETIF_MSG_TX_QUEUED = 0x0100, | |
3449 | NETIF_MSG_INTR = 0x0200, | |
3450 | NETIF_MSG_TX_DONE = 0x0400, | |
3451 | NETIF_MSG_RX_STATUS = 0x0800, | |
3452 | NETIF_MSG_PKTDATA = 0x1000, | |
3453 | NETIF_MSG_HW = 0x2000, | |
3454 | NETIF_MSG_WOL = 0x4000, | |
3455 | }; | |
3456 | ||
3457 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
3458 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
3459 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
3460 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
3461 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
3462 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
3463 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
3464 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
3465 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
3466 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
3467 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
3468 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
3469 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
3470 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
3471 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
3472 | ||
3473 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
3474 | { | |
3475 | /* use default */ | |
3476 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
3477 | return default_msg_enable_bits; | |
3478 | if (debug_value == 0) /* no output */ | |
3479 | return 0; | |
3480 | /* set low N bits */ | |
3481 | return (1 << debug_value) - 1; | |
3482 | } | |
3483 | ||
c773e847 | 3484 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 3485 | { |
c773e847 DM |
3486 | spin_lock(&txq->_xmit_lock); |
3487 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
3488 | } |
3489 | ||
5a717f4f MT |
3490 | static inline bool __netif_tx_acquire(struct netdev_queue *txq) |
3491 | { | |
3492 | __acquire(&txq->_xmit_lock); | |
3493 | return true; | |
3494 | } | |
3495 | ||
3496 | static inline void __netif_tx_release(struct netdev_queue *txq) | |
3497 | { | |
3498 | __release(&txq->_xmit_lock); | |
3499 | } | |
3500 | ||
fd2ea0a7 DM |
3501 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
3502 | { | |
3503 | spin_lock_bh(&txq->_xmit_lock); | |
3504 | txq->xmit_lock_owner = smp_processor_id(); | |
3505 | } | |
3506 | ||
4d29515f | 3507 | static inline bool __netif_tx_trylock(struct netdev_queue *txq) |
c3f26a26 | 3508 | { |
4d29515f | 3509 | bool ok = spin_trylock(&txq->_xmit_lock); |
c3f26a26 DM |
3510 | if (likely(ok)) |
3511 | txq->xmit_lock_owner = smp_processor_id(); | |
3512 | return ok; | |
3513 | } | |
3514 | ||
3515 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
3516 | { | |
3517 | txq->xmit_lock_owner = -1; | |
3518 | spin_unlock(&txq->_xmit_lock); | |
3519 | } | |
3520 | ||
3521 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
3522 | { | |
3523 | txq->xmit_lock_owner = -1; | |
3524 | spin_unlock_bh(&txq->_xmit_lock); | |
3525 | } | |
3526 | ||
08baf561 ED |
3527 | static inline void txq_trans_update(struct netdev_queue *txq) |
3528 | { | |
3529 | if (txq->xmit_lock_owner != -1) | |
3530 | txq->trans_start = jiffies; | |
3531 | } | |
3532 | ||
ba162f8e FW |
3533 | /* legacy drivers only, netdev_start_xmit() sets txq->trans_start */ |
3534 | static inline void netif_trans_update(struct net_device *dev) | |
3535 | { | |
9b36627a FW |
3536 | struct netdev_queue *txq = netdev_get_tx_queue(dev, 0); |
3537 | ||
3538 | if (txq->trans_start != jiffies) | |
3539 | txq->trans_start = jiffies; | |
ba162f8e FW |
3540 | } |
3541 | ||
d29f749e DJ |
3542 | /** |
3543 | * netif_tx_lock - grab network device transmit lock | |
3544 | * @dev: network device | |
d29f749e DJ |
3545 | * |
3546 | * Get network device transmit lock | |
3547 | */ | |
22dd7495 JHS |
3548 | static inline void netif_tx_lock(struct net_device *dev) |
3549 | { | |
e8a0464c | 3550 | unsigned int i; |
c3f26a26 | 3551 | int cpu; |
c773e847 | 3552 | |
c3f26a26 DM |
3553 | spin_lock(&dev->tx_global_lock); |
3554 | cpu = smp_processor_id(); | |
e8a0464c DM |
3555 | for (i = 0; i < dev->num_tx_queues; i++) { |
3556 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
3557 | |
3558 | /* We are the only thread of execution doing a | |
3559 | * freeze, but we have to grab the _xmit_lock in | |
3560 | * order to synchronize with threads which are in | |
3561 | * the ->hard_start_xmit() handler and already | |
3562 | * checked the frozen bit. | |
3563 | */ | |
e8a0464c | 3564 | __netif_tx_lock(txq, cpu); |
c3f26a26 DM |
3565 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
3566 | __netif_tx_unlock(txq); | |
e8a0464c | 3567 | } |
932ff279 HX |
3568 | } |
3569 | ||
3570 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
3571 | { | |
e8a0464c DM |
3572 | local_bh_disable(); |
3573 | netif_tx_lock(dev); | |
932ff279 HX |
3574 | } |
3575 | ||
932ff279 HX |
3576 | static inline void netif_tx_unlock(struct net_device *dev) |
3577 | { | |
e8a0464c DM |
3578 | unsigned int i; |
3579 | ||
3580 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3581 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c773e847 | 3582 | |
c3f26a26 DM |
3583 | /* No need to grab the _xmit_lock here. If the |
3584 | * queue is not stopped for another reason, we | |
3585 | * force a schedule. | |
3586 | */ | |
3587 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
7b3d3e4f | 3588 | netif_schedule_queue(txq); |
c3f26a26 DM |
3589 | } |
3590 | spin_unlock(&dev->tx_global_lock); | |
932ff279 HX |
3591 | } |
3592 | ||
3593 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
3594 | { | |
e8a0464c DM |
3595 | netif_tx_unlock(dev); |
3596 | local_bh_enable(); | |
932ff279 HX |
3597 | } |
3598 | ||
c773e847 | 3599 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 3600 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 3601 | __netif_tx_lock(txq, cpu); \ |
5a717f4f MT |
3602 | } else { \ |
3603 | __netif_tx_acquire(txq); \ | |
22dd7495 JHS |
3604 | } \ |
3605 | } | |
3606 | ||
5efeac44 EB |
3607 | #define HARD_TX_TRYLOCK(dev, txq) \ |
3608 | (((dev->features & NETIF_F_LLTX) == 0) ? \ | |
3609 | __netif_tx_trylock(txq) : \ | |
5a717f4f | 3610 | __netif_tx_acquire(txq)) |
5efeac44 | 3611 | |
c773e847 | 3612 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 3613 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 3614 | __netif_tx_unlock(txq); \ |
5a717f4f MT |
3615 | } else { \ |
3616 | __netif_tx_release(txq); \ | |
22dd7495 JHS |
3617 | } \ |
3618 | } | |
3619 | ||
1da177e4 LT |
3620 | static inline void netif_tx_disable(struct net_device *dev) |
3621 | { | |
fd2ea0a7 | 3622 | unsigned int i; |
c3f26a26 | 3623 | int cpu; |
fd2ea0a7 | 3624 | |
c3f26a26 DM |
3625 | local_bh_disable(); |
3626 | cpu = smp_processor_id(); | |
fd2ea0a7 DM |
3627 | for (i = 0; i < dev->num_tx_queues; i++) { |
3628 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
3629 | |
3630 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 3631 | netif_tx_stop_queue(txq); |
c3f26a26 | 3632 | __netif_tx_unlock(txq); |
fd2ea0a7 | 3633 | } |
c3f26a26 | 3634 | local_bh_enable(); |
1da177e4 LT |
3635 | } |
3636 | ||
e308a5d8 DM |
3637 | static inline void netif_addr_lock(struct net_device *dev) |
3638 | { | |
3639 | spin_lock(&dev->addr_list_lock); | |
3640 | } | |
3641 | ||
2429f7ac JP |
3642 | static inline void netif_addr_lock_nested(struct net_device *dev) |
3643 | { | |
25175ba5 VY |
3644 | int subclass = SINGLE_DEPTH_NESTING; |
3645 | ||
3646 | if (dev->netdev_ops->ndo_get_lock_subclass) | |
3647 | subclass = dev->netdev_ops->ndo_get_lock_subclass(dev); | |
3648 | ||
3649 | spin_lock_nested(&dev->addr_list_lock, subclass); | |
2429f7ac JP |
3650 | } |
3651 | ||
e308a5d8 DM |
3652 | static inline void netif_addr_lock_bh(struct net_device *dev) |
3653 | { | |
3654 | spin_lock_bh(&dev->addr_list_lock); | |
3655 | } | |
3656 | ||
3657 | static inline void netif_addr_unlock(struct net_device *dev) | |
3658 | { | |
3659 | spin_unlock(&dev->addr_list_lock); | |
3660 | } | |
3661 | ||
3662 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
3663 | { | |
3664 | spin_unlock_bh(&dev->addr_list_lock); | |
3665 | } | |
3666 | ||
f001fde5 | 3667 | /* |
31278e71 | 3668 | * dev_addrs walker. Should be used only for read access. Call with |
f001fde5 JP |
3669 | * rcu_read_lock held. |
3670 | */ | |
3671 | #define for_each_dev_addr(dev, ha) \ | |
31278e71 | 3672 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
f001fde5 | 3673 | |
1da177e4 LT |
3674 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
3675 | ||
f629d208 | 3676 | void ether_setup(struct net_device *dev); |
1da177e4 LT |
3677 | |
3678 | /* Support for loadable net-drivers */ | |
f629d208 | 3679 | struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, |
c835a677 | 3680 | unsigned char name_assign_type, |
f629d208 JP |
3681 | void (*setup)(struct net_device *), |
3682 | unsigned int txqs, unsigned int rxqs); | |
c835a677 TG |
3683 | #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \ |
3684 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, 1, 1) | |
36909ea4 | 3685 | |
c835a677 TG |
3686 | #define alloc_netdev_mq(sizeof_priv, name, name_assign_type, setup, count) \ |
3687 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, count, \ | |
3688 | count) | |
36909ea4 | 3689 | |
f629d208 JP |
3690 | int register_netdev(struct net_device *dev); |
3691 | void unregister_netdev(struct net_device *dev); | |
f001fde5 | 3692 | |
22bedad3 | 3693 | /* General hardware address lists handling functions */ |
f629d208 JP |
3694 | int __hw_addr_sync(struct netdev_hw_addr_list *to_list, |
3695 | struct netdev_hw_addr_list *from_list, int addr_len); | |
3696 | void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, | |
3697 | struct netdev_hw_addr_list *from_list, int addr_len); | |
670e5b8e AD |
3698 | int __hw_addr_sync_dev(struct netdev_hw_addr_list *list, |
3699 | struct net_device *dev, | |
3700 | int (*sync)(struct net_device *, const unsigned char *), | |
3701 | int (*unsync)(struct net_device *, | |
3702 | const unsigned char *)); | |
3703 | void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list, | |
3704 | struct net_device *dev, | |
3705 | int (*unsync)(struct net_device *, | |
3706 | const unsigned char *)); | |
f629d208 | 3707 | void __hw_addr_init(struct netdev_hw_addr_list *list); |
22bedad3 | 3708 | |
f001fde5 | 3709 | /* Functions used for device addresses handling */ |
f629d208 JP |
3710 | int dev_addr_add(struct net_device *dev, const unsigned char *addr, |
3711 | unsigned char addr_type); | |
3712 | int dev_addr_del(struct net_device *dev, const unsigned char *addr, | |
3713 | unsigned char addr_type); | |
f629d208 JP |
3714 | void dev_addr_flush(struct net_device *dev); |
3715 | int dev_addr_init(struct net_device *dev); | |
a748ee24 JP |
3716 | |
3717 | /* Functions used for unicast addresses handling */ | |
f629d208 JP |
3718 | int dev_uc_add(struct net_device *dev, const unsigned char *addr); |
3719 | int dev_uc_add_excl(struct net_device *dev, const unsigned char *addr); | |
3720 | int dev_uc_del(struct net_device *dev, const unsigned char *addr); | |
3721 | int dev_uc_sync(struct net_device *to, struct net_device *from); | |
3722 | int dev_uc_sync_multiple(struct net_device *to, struct net_device *from); | |
3723 | void dev_uc_unsync(struct net_device *to, struct net_device *from); | |
3724 | void dev_uc_flush(struct net_device *dev); | |
3725 | void dev_uc_init(struct net_device *dev); | |
f001fde5 | 3726 | |
670e5b8e AD |
3727 | /** |
3728 | * __dev_uc_sync - Synchonize device's unicast list | |
3729 | * @dev: device to sync | |
3730 | * @sync: function to call if address should be added | |
3731 | * @unsync: function to call if address should be removed | |
3732 | * | |
3733 | * Add newly added addresses to the interface, and release | |
3734 | * addresses that have been deleted. | |
5e82b4b2 | 3735 | */ |
670e5b8e AD |
3736 | static inline int __dev_uc_sync(struct net_device *dev, |
3737 | int (*sync)(struct net_device *, | |
3738 | const unsigned char *), | |
3739 | int (*unsync)(struct net_device *, | |
3740 | const unsigned char *)) | |
3741 | { | |
3742 | return __hw_addr_sync_dev(&dev->uc, dev, sync, unsync); | |
3743 | } | |
3744 | ||
3745 | /** | |
e793c0f7 | 3746 | * __dev_uc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
3747 | * @dev: device to sync |
3748 | * @unsync: function to call if address should be removed | |
3749 | * | |
3750 | * Remove all addresses that were added to the device by dev_uc_sync(). | |
5e82b4b2 | 3751 | */ |
670e5b8e AD |
3752 | static inline void __dev_uc_unsync(struct net_device *dev, |
3753 | int (*unsync)(struct net_device *, | |
3754 | const unsigned char *)) | |
3755 | { | |
3756 | __hw_addr_unsync_dev(&dev->uc, dev, unsync); | |
3757 | } | |
3758 | ||
22bedad3 | 3759 | /* Functions used for multicast addresses handling */ |
f629d208 JP |
3760 | int dev_mc_add(struct net_device *dev, const unsigned char *addr); |
3761 | int dev_mc_add_global(struct net_device *dev, const unsigned char *addr); | |
3762 | int dev_mc_add_excl(struct net_device *dev, const unsigned char *addr); | |
3763 | int dev_mc_del(struct net_device *dev, const unsigned char *addr); | |
3764 | int dev_mc_del_global(struct net_device *dev, const unsigned char *addr); | |
3765 | int dev_mc_sync(struct net_device *to, struct net_device *from); | |
3766 | int dev_mc_sync_multiple(struct net_device *to, struct net_device *from); | |
3767 | void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
3768 | void dev_mc_flush(struct net_device *dev); | |
3769 | void dev_mc_init(struct net_device *dev); | |
f001fde5 | 3770 | |
670e5b8e AD |
3771 | /** |
3772 | * __dev_mc_sync - Synchonize device's multicast list | |
3773 | * @dev: device to sync | |
3774 | * @sync: function to call if address should be added | |
3775 | * @unsync: function to call if address should be removed | |
3776 | * | |
3777 | * Add newly added addresses to the interface, and release | |
3778 | * addresses that have been deleted. | |
5e82b4b2 | 3779 | */ |
670e5b8e AD |
3780 | static inline int __dev_mc_sync(struct net_device *dev, |
3781 | int (*sync)(struct net_device *, | |
3782 | const unsigned char *), | |
3783 | int (*unsync)(struct net_device *, | |
3784 | const unsigned char *)) | |
3785 | { | |
3786 | return __hw_addr_sync_dev(&dev->mc, dev, sync, unsync); | |
3787 | } | |
3788 | ||
3789 | /** | |
e793c0f7 | 3790 | * __dev_mc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
3791 | * @dev: device to sync |
3792 | * @unsync: function to call if address should be removed | |
3793 | * | |
3794 | * Remove all addresses that were added to the device by dev_mc_sync(). | |
5e82b4b2 | 3795 | */ |
670e5b8e AD |
3796 | static inline void __dev_mc_unsync(struct net_device *dev, |
3797 | int (*unsync)(struct net_device *, | |
3798 | const unsigned char *)) | |
3799 | { | |
3800 | __hw_addr_unsync_dev(&dev->mc, dev, unsync); | |
3801 | } | |
3802 | ||
4417da66 | 3803 | /* Functions used for secondary unicast and multicast support */ |
f629d208 JP |
3804 | void dev_set_rx_mode(struct net_device *dev); |
3805 | void __dev_set_rx_mode(struct net_device *dev); | |
3806 | int dev_set_promiscuity(struct net_device *dev, int inc); | |
3807 | int dev_set_allmulti(struct net_device *dev, int inc); | |
3808 | void netdev_state_change(struct net_device *dev); | |
3809 | void netdev_notify_peers(struct net_device *dev); | |
3810 | void netdev_features_change(struct net_device *dev); | |
1da177e4 | 3811 | /* Load a device via the kmod */ |
f629d208 JP |
3812 | void dev_load(struct net *net, const char *name); |
3813 | struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, | |
3814 | struct rtnl_link_stats64 *storage); | |
3815 | void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64, | |
3816 | const struct net_device_stats *netdev_stats); | |
eeda3fd6 | 3817 | |
1da177e4 | 3818 | extern int netdev_max_backlog; |
3b098e2d | 3819 | extern int netdev_tstamp_prequeue; |
1da177e4 | 3820 | extern int weight_p; |
3d48b53f MT |
3821 | extern int dev_weight_rx_bias; |
3822 | extern int dev_weight_tx_bias; | |
3823 | extern int dev_rx_weight; | |
3824 | extern int dev_tx_weight; | |
9ff162a8 | 3825 | |
f629d208 | 3826 | bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev); |
44a40855 VY |
3827 | struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev, |
3828 | struct list_head **iter); | |
f629d208 JP |
3829 | struct net_device *netdev_all_upper_get_next_dev_rcu(struct net_device *dev, |
3830 | struct list_head **iter); | |
8b5be856 | 3831 | |
44a40855 VY |
3832 | /* iterate through upper list, must be called under RCU read lock */ |
3833 | #define netdev_for_each_upper_dev_rcu(dev, updev, iter) \ | |
3834 | for (iter = &(dev)->adj_list.upper, \ | |
3835 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter)); \ | |
3836 | updev; \ | |
3837 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter))) | |
3838 | ||
1a3f060c DA |
3839 | int netdev_walk_all_upper_dev_rcu(struct net_device *dev, |
3840 | int (*fn)(struct net_device *upper_dev, | |
3841 | void *data), | |
3842 | void *data); | |
3843 | ||
3844 | bool netdev_has_upper_dev_all_rcu(struct net_device *dev, | |
3845 | struct net_device *upper_dev); | |
3846 | ||
f629d208 JP |
3847 | void *netdev_lower_get_next_private(struct net_device *dev, |
3848 | struct list_head **iter); | |
3849 | void *netdev_lower_get_next_private_rcu(struct net_device *dev, | |
3850 | struct list_head **iter); | |
31088a11 VF |
3851 | |
3852 | #define netdev_for_each_lower_private(dev, priv, iter) \ | |
3853 | for (iter = (dev)->adj_list.lower.next, \ | |
3854 | priv = netdev_lower_get_next_private(dev, &(iter)); \ | |
3855 | priv; \ | |
3856 | priv = netdev_lower_get_next_private(dev, &(iter))) | |
3857 | ||
3858 | #define netdev_for_each_lower_private_rcu(dev, priv, iter) \ | |
3859 | for (iter = &(dev)->adj_list.lower, \ | |
3860 | priv = netdev_lower_get_next_private_rcu(dev, &(iter)); \ | |
3861 | priv; \ | |
3862 | priv = netdev_lower_get_next_private_rcu(dev, &(iter))) | |
3863 | ||
4085ebe8 VY |
3864 | void *netdev_lower_get_next(struct net_device *dev, |
3865 | struct list_head **iter); | |
7ce856aa | 3866 | |
4085ebe8 | 3867 | #define netdev_for_each_lower_dev(dev, ldev, iter) \ |
cfdd28be | 3868 | for (iter = (dev)->adj_list.lower.next, \ |
4085ebe8 VY |
3869 | ldev = netdev_lower_get_next(dev, &(iter)); \ |
3870 | ldev; \ | |
3871 | ldev = netdev_lower_get_next(dev, &(iter))) | |
3872 | ||
7ce856aa JP |
3873 | struct net_device *netdev_all_lower_get_next(struct net_device *dev, |
3874 | struct list_head **iter); | |
3875 | struct net_device *netdev_all_lower_get_next_rcu(struct net_device *dev, | |
3876 | struct list_head **iter); | |
3877 | ||
1a3f060c DA |
3878 | int netdev_walk_all_lower_dev(struct net_device *dev, |
3879 | int (*fn)(struct net_device *lower_dev, | |
3880 | void *data), | |
3881 | void *data); | |
3882 | int netdev_walk_all_lower_dev_rcu(struct net_device *dev, | |
3883 | int (*fn)(struct net_device *lower_dev, | |
3884 | void *data), | |
3885 | void *data); | |
3886 | ||
f629d208 | 3887 | void *netdev_adjacent_get_private(struct list_head *adj_list); |
e001bfad | 3888 | void *netdev_lower_get_first_private_rcu(struct net_device *dev); |
f629d208 JP |
3889 | struct net_device *netdev_master_upper_dev_get(struct net_device *dev); |
3890 | struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev); | |
3891 | int netdev_upper_dev_link(struct net_device *dev, struct net_device *upper_dev); | |
3892 | int netdev_master_upper_dev_link(struct net_device *dev, | |
6dffb044 | 3893 | struct net_device *upper_dev, |
29bf24af | 3894 | void *upper_priv, void *upper_info); |
f629d208 JP |
3895 | void netdev_upper_dev_unlink(struct net_device *dev, |
3896 | struct net_device *upper_dev); | |
5bb025fa | 3897 | void netdev_adjacent_rename_links(struct net_device *dev, char *oldname); |
f629d208 JP |
3898 | void *netdev_lower_dev_get_private(struct net_device *dev, |
3899 | struct net_device *lower_dev); | |
04d48266 JP |
3900 | void netdev_lower_state_changed(struct net_device *lower_dev, |
3901 | void *lower_state_info); | |
960fb622 ED |
3902 | |
3903 | /* RSS keys are 40 or 52 bytes long */ | |
3904 | #define NETDEV_RSS_KEY_LEN 52 | |
ba905f5e | 3905 | extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
3906 | void netdev_rss_key_fill(void *buffer, size_t len); |
3907 | ||
952fcfd0 | 3908 | int dev_get_nest_level(struct net_device *dev); |
f629d208 JP |
3909 | int skb_checksum_help(struct sk_buff *skb); |
3910 | struct sk_buff *__skb_gso_segment(struct sk_buff *skb, | |
3911 | netdev_features_t features, bool tx_path); | |
3912 | struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb, | |
3913 | netdev_features_t features); | |
12b0004d | 3914 | |
61bd3857 MS |
3915 | struct netdev_bonding_info { |
3916 | ifslave slave; | |
3917 | ifbond master; | |
3918 | }; | |
3919 | ||
3920 | struct netdev_notifier_bonding_info { | |
3921 | struct netdev_notifier_info info; /* must be first */ | |
3922 | struct netdev_bonding_info bonding_info; | |
3923 | }; | |
3924 | ||
3925 | void netdev_bonding_info_change(struct net_device *dev, | |
3926 | struct netdev_bonding_info *bonding_info); | |
3927 | ||
12b0004d CW |
3928 | static inline |
3929 | struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features) | |
3930 | { | |
3931 | return __skb_gso_segment(skb, features, true); | |
3932 | } | |
53d6471c | 3933 | __be16 skb_network_protocol(struct sk_buff *skb, int *depth); |
ec5f0615 PS |
3934 | |
3935 | static inline bool can_checksum_protocol(netdev_features_t features, | |
3936 | __be16 protocol) | |
3937 | { | |
c8cd0989 TH |
3938 | if (protocol == htons(ETH_P_FCOE)) |
3939 | return !!(features & NETIF_F_FCOE_CRC); | |
3940 | ||
3941 | /* Assume this is an IP checksum (not SCTP CRC) */ | |
3942 | ||
3943 | if (features & NETIF_F_HW_CSUM) { | |
3944 | /* Can checksum everything */ | |
3945 | return true; | |
3946 | } | |
3947 | ||
3948 | switch (protocol) { | |
3949 | case htons(ETH_P_IP): | |
3950 | return !!(features & NETIF_F_IP_CSUM); | |
3951 | case htons(ETH_P_IPV6): | |
3952 | return !!(features & NETIF_F_IPV6_CSUM); | |
3953 | default: | |
3954 | return false; | |
3955 | } | |
ec5f0615 | 3956 | } |
12b0004d | 3957 | |
fb286bb2 | 3958 | #ifdef CONFIG_BUG |
f629d208 | 3959 | void netdev_rx_csum_fault(struct net_device *dev); |
fb286bb2 HX |
3960 | #else |
3961 | static inline void netdev_rx_csum_fault(struct net_device *dev) | |
3962 | { | |
3963 | } | |
3964 | #endif | |
1da177e4 | 3965 | /* rx skb timestamps */ |
f629d208 JP |
3966 | void net_enable_timestamp(void); |
3967 | void net_disable_timestamp(void); | |
1da177e4 | 3968 | |
20380731 | 3969 | #ifdef CONFIG_PROC_FS |
f629d208 | 3970 | int __init dev_proc_init(void); |
900ff8c6 CW |
3971 | #else |
3972 | #define dev_proc_init() 0 | |
20380731 ACM |
3973 | #endif |
3974 | ||
4798248e | 3975 | static inline netdev_tx_t __netdev_start_xmit(const struct net_device_ops *ops, |
fa2dbdc2 DM |
3976 | struct sk_buff *skb, struct net_device *dev, |
3977 | bool more) | |
4798248e | 3978 | { |
fa2dbdc2 | 3979 | skb->xmit_more = more ? 1 : 0; |
0b725a2c | 3980 | return ops->ndo_start_xmit(skb, dev); |
4798248e DM |
3981 | } |
3982 | ||
10b3ad8c | 3983 | static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev, |
fa2dbdc2 | 3984 | struct netdev_queue *txq, bool more) |
4798248e DM |
3985 | { |
3986 | const struct net_device_ops *ops = dev->netdev_ops; | |
10b3ad8c | 3987 | int rc; |
4798248e | 3988 | |
fa2dbdc2 | 3989 | rc = __netdev_start_xmit(ops, skb, dev, more); |
10b3ad8c DM |
3990 | if (rc == NETDEV_TX_OK) |
3991 | txq_trans_update(txq); | |
3992 | ||
3993 | return rc; | |
4798248e DM |
3994 | } |
3995 | ||
42a2d923 LT |
3996 | int netdev_class_create_file_ns(struct class_attribute *class_attr, |
3997 | const void *ns); | |
3998 | void netdev_class_remove_file_ns(struct class_attribute *class_attr, | |
3999 | const void *ns); | |
58292cbe TH |
4000 | |
4001 | static inline int netdev_class_create_file(struct class_attribute *class_attr) | |
4002 | { | |
4003 | return netdev_class_create_file_ns(class_attr, NULL); | |
4004 | } | |
4005 | ||
4006 | static inline void netdev_class_remove_file(struct class_attribute *class_attr) | |
4007 | { | |
4008 | netdev_class_remove_file_ns(class_attr, NULL); | |
4009 | } | |
b8a9787e | 4010 | |
04600794 JB |
4011 | extern struct kobj_ns_type_operations net_ns_type_operations; |
4012 | ||
f629d208 | 4013 | const char *netdev_drivername(const struct net_device *dev); |
6579e57b | 4014 | |
f629d208 | 4015 | void linkwatch_run_queue(void); |
20380731 | 4016 | |
da08143b MK |
4017 | static inline netdev_features_t netdev_intersect_features(netdev_features_t f1, |
4018 | netdev_features_t f2) | |
4019 | { | |
c8cd0989 TH |
4020 | if ((f1 ^ f2) & NETIF_F_HW_CSUM) { |
4021 | if (f1 & NETIF_F_HW_CSUM) | |
b6a0e72a | 4022 | f1 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 4023 | else |
b6a0e72a | 4024 | f2 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 4025 | } |
da08143b | 4026 | |
c8cd0989 | 4027 | return f1 & f2; |
da08143b MK |
4028 | } |
4029 | ||
c8f44aff MM |
4030 | static inline netdev_features_t netdev_get_wanted_features( |
4031 | struct net_device *dev) | |
5455c699 MM |
4032 | { |
4033 | return (dev->features & ~dev->hw_features) | dev->wanted_features; | |
4034 | } | |
c8f44aff MM |
4035 | netdev_features_t netdev_increment_features(netdev_features_t all, |
4036 | netdev_features_t one, netdev_features_t mask); | |
b0ce3508 ED |
4037 | |
4038 | /* Allow TSO being used on stacked device : | |
4039 | * Performing the GSO segmentation before last device | |
4040 | * is a performance improvement. | |
4041 | */ | |
4042 | static inline netdev_features_t netdev_add_tso_features(netdev_features_t features, | |
4043 | netdev_features_t mask) | |
4044 | { | |
4045 | return netdev_increment_features(features, NETIF_F_ALL_TSO, mask); | |
4046 | } | |
4047 | ||
6cb6a27c | 4048 | int __netdev_update_features(struct net_device *dev); |
5455c699 | 4049 | void netdev_update_features(struct net_device *dev); |
afe12cc8 | 4050 | void netdev_change_features(struct net_device *dev); |
7f353bf2 | 4051 | |
fc4a7489 PM |
4052 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
4053 | struct net_device *dev); | |
4054 | ||
e38f3025 TM |
4055 | netdev_features_t passthru_features_check(struct sk_buff *skb, |
4056 | struct net_device *dev, | |
4057 | netdev_features_t features); | |
c1e756bf | 4058 | netdev_features_t netif_skb_features(struct sk_buff *skb); |
58e998c6 | 4059 | |
4d29515f | 4060 | static inline bool net_gso_ok(netdev_features_t features, int gso_type) |
576a30eb | 4061 | { |
7b748340 | 4062 | netdev_features_t feature = (netdev_features_t)gso_type << NETIF_F_GSO_SHIFT; |
0345e186 MM |
4063 | |
4064 | /* check flags correspondence */ | |
4065 | BUILD_BUG_ON(SKB_GSO_TCPV4 != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT)); | |
4066 | BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_UFO >> NETIF_F_GSO_SHIFT)); | |
4067 | BUILD_BUG_ON(SKB_GSO_DODGY != (NETIF_F_GSO_ROBUST >> NETIF_F_GSO_SHIFT)); | |
4068 | BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT)); | |
cbc53e08 | 4069 | BUILD_BUG_ON(SKB_GSO_TCP_FIXEDID != (NETIF_F_TSO_MANGLEID >> NETIF_F_GSO_SHIFT)); |
0345e186 MM |
4070 | BUILD_BUG_ON(SKB_GSO_TCPV6 != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT)); |
4071 | BUILD_BUG_ON(SKB_GSO_FCOE != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
4072 | BUILD_BUG_ON(SKB_GSO_GRE != (NETIF_F_GSO_GRE >> NETIF_F_GSO_SHIFT)); |
4073 | BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT)); | |
7e13318d TH |
4074 | BUILD_BUG_ON(SKB_GSO_IPXIP4 != (NETIF_F_GSO_IPXIP4 >> NETIF_F_GSO_SHIFT)); |
4075 | BUILD_BUG_ON(SKB_GSO_IPXIP6 != (NETIF_F_GSO_IPXIP6 >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
4076 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT)); |
4077 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT)); | |
802ab55a | 4078 | BUILD_BUG_ON(SKB_GSO_PARTIAL != (NETIF_F_GSO_PARTIAL >> NETIF_F_GSO_SHIFT)); |
e585f236 | 4079 | BUILD_BUG_ON(SKB_GSO_TUNNEL_REMCSUM != (NETIF_F_GSO_TUNNEL_REMCSUM >> NETIF_F_GSO_SHIFT)); |
90017acc | 4080 | BUILD_BUG_ON(SKB_GSO_SCTP != (NETIF_F_GSO_SCTP >> NETIF_F_GSO_SHIFT)); |
0345e186 | 4081 | |
d6b4991a | 4082 | return (features & feature) == feature; |
576a30eb HX |
4083 | } |
4084 | ||
4d29515f | 4085 | static inline bool skb_gso_ok(struct sk_buff *skb, netdev_features_t features) |
bcd76111 | 4086 | { |
278b2513 | 4087 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
21dc3301 | 4088 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
bcd76111 HX |
4089 | } |
4090 | ||
8b86a61d | 4091 | static inline bool netif_needs_gso(struct sk_buff *skb, |
4d29515f | 4092 | netdev_features_t features) |
7967168c | 4093 | { |
fc741216 | 4094 | return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || |
cdbee74c YZ |
4095 | unlikely((skb->ip_summed != CHECKSUM_PARTIAL) && |
4096 | (skb->ip_summed != CHECKSUM_UNNECESSARY))); | |
7967168c HX |
4097 | } |
4098 | ||
82cc1a7a PWJ |
4099 | static inline void netif_set_gso_max_size(struct net_device *dev, |
4100 | unsigned int size) | |
4101 | { | |
4102 | dev->gso_max_size = size; | |
4103 | } | |
4104 | ||
7a7ffbab WCC |
4105 | static inline void skb_gso_error_unwind(struct sk_buff *skb, __be16 protocol, |
4106 | int pulled_hlen, u16 mac_offset, | |
4107 | int mac_len) | |
4108 | { | |
4109 | skb->protocol = protocol; | |
4110 | skb->encapsulation = 1; | |
4111 | skb_push(skb, pulled_hlen); | |
4112 | skb_reset_transport_header(skb); | |
4113 | skb->mac_header = mac_offset; | |
4114 | skb->network_header = skb->mac_header + mac_len; | |
4115 | skb->mac_len = mac_len; | |
4116 | } | |
4117 | ||
3c175784 SD |
4118 | static inline bool netif_is_macsec(const struct net_device *dev) |
4119 | { | |
4120 | return dev->priv_flags & IFF_MACSEC; | |
4121 | } | |
4122 | ||
b618aaa9 | 4123 | static inline bool netif_is_macvlan(const struct net_device *dev) |
a6cc0cfa JF |
4124 | { |
4125 | return dev->priv_flags & IFF_MACVLAN; | |
4126 | } | |
4127 | ||
b618aaa9 | 4128 | static inline bool netif_is_macvlan_port(const struct net_device *dev) |
2f33e7d5 MB |
4129 | { |
4130 | return dev->priv_flags & IFF_MACVLAN_PORT; | |
4131 | } | |
4132 | ||
b618aaa9 | 4133 | static inline bool netif_is_ipvlan(const struct net_device *dev) |
5933fea7 MB |
4134 | { |
4135 | return dev->priv_flags & IFF_IPVLAN_SLAVE; | |
4136 | } | |
4137 | ||
b618aaa9 | 4138 | static inline bool netif_is_ipvlan_port(const struct net_device *dev) |
5933fea7 MB |
4139 | { |
4140 | return dev->priv_flags & IFF_IPVLAN_MASTER; | |
4141 | } | |
4142 | ||
b618aaa9 | 4143 | static inline bool netif_is_bond_master(const struct net_device *dev) |
8a7fbfab | 4144 | { |
4145 | return dev->flags & IFF_MASTER && dev->priv_flags & IFF_BONDING; | |
4146 | } | |
4147 | ||
b618aaa9 | 4148 | static inline bool netif_is_bond_slave(const struct net_device *dev) |
1765a575 JP |
4149 | { |
4150 | return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING; | |
4151 | } | |
4152 | ||
3bdc0eba BG |
4153 | static inline bool netif_supports_nofcs(struct net_device *dev) |
4154 | { | |
4155 | return dev->priv_flags & IFF_SUPP_NOFCS; | |
4156 | } | |
4157 | ||
007979ea | 4158 | static inline bool netif_is_l3_master(const struct net_device *dev) |
4e3c8992 | 4159 | { |
007979ea | 4160 | return dev->priv_flags & IFF_L3MDEV_MASTER; |
4e3c8992 DA |
4161 | } |
4162 | ||
fee6d4c7 DA |
4163 | static inline bool netif_is_l3_slave(const struct net_device *dev) |
4164 | { | |
4165 | return dev->priv_flags & IFF_L3MDEV_SLAVE; | |
4166 | } | |
4167 | ||
0894ae3f JP |
4168 | static inline bool netif_is_bridge_master(const struct net_device *dev) |
4169 | { | |
4170 | return dev->priv_flags & IFF_EBRIDGE; | |
4171 | } | |
4172 | ||
28f9ee22 VY |
4173 | static inline bool netif_is_bridge_port(const struct net_device *dev) |
4174 | { | |
4175 | return dev->priv_flags & IFF_BRIDGE_PORT; | |
4176 | } | |
4177 | ||
35d4e172 JP |
4178 | static inline bool netif_is_ovs_master(const struct net_device *dev) |
4179 | { | |
4180 | return dev->priv_flags & IFF_OPENVSWITCH; | |
4181 | } | |
4182 | ||
b618aaa9 | 4183 | static inline bool netif_is_team_master(const struct net_device *dev) |
c981e421 JP |
4184 | { |
4185 | return dev->priv_flags & IFF_TEAM; | |
4186 | } | |
4187 | ||
b618aaa9 | 4188 | static inline bool netif_is_team_port(const struct net_device *dev) |
f7f019ee JP |
4189 | { |
4190 | return dev->priv_flags & IFF_TEAM_PORT; | |
4191 | } | |
4192 | ||
b618aaa9 | 4193 | static inline bool netif_is_lag_master(const struct net_device *dev) |
7be61833 JP |
4194 | { |
4195 | return netif_is_bond_master(dev) || netif_is_team_master(dev); | |
4196 | } | |
4197 | ||
b618aaa9 | 4198 | static inline bool netif_is_lag_port(const struct net_device *dev) |
e0ba1414 JP |
4199 | { |
4200 | return netif_is_bond_slave(dev) || netif_is_team_port(dev); | |
4201 | } | |
4202 | ||
d4ab4286 KJ |
4203 | static inline bool netif_is_rxfh_configured(const struct net_device *dev) |
4204 | { | |
4205 | return dev->priv_flags & IFF_RXFH_CONFIGURED; | |
4206 | } | |
4207 | ||
02875878 ED |
4208 | /* This device needs to keep skb dst for qdisc enqueue or ndo_start_xmit() */ |
4209 | static inline void netif_keep_dst(struct net_device *dev) | |
4210 | { | |
4211 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM); | |
4212 | } | |
4213 | ||
18d3df3e PA |
4214 | /* return true if dev can't cope with mtu frames that need vlan tag insertion */ |
4215 | static inline bool netif_reduces_vlan_mtu(struct net_device *dev) | |
4216 | { | |
4217 | /* TODO: reserve and use an additional IFF bit, if we get more users */ | |
4218 | return dev->priv_flags & IFF_MACSEC; | |
4219 | } | |
4220 | ||
505d4f73 | 4221 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 | 4222 | |
571ba423 JP |
4223 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ |
4224 | ||
4225 | /* netdev_printk helpers, similar to dev_printk */ | |
4226 | ||
4227 | static inline const char *netdev_name(const struct net_device *dev) | |
4228 | { | |
c6f854d5 VF |
4229 | if (!dev->name[0] || strchr(dev->name, '%')) |
4230 | return "(unnamed net_device)"; | |
571ba423 JP |
4231 | return dev->name; |
4232 | } | |
4233 | ||
ccc7f496 VF |
4234 | static inline const char *netdev_reg_state(const struct net_device *dev) |
4235 | { | |
4236 | switch (dev->reg_state) { | |
4237 | case NETREG_UNINITIALIZED: return " (uninitialized)"; | |
4238 | case NETREG_REGISTERED: return ""; | |
4239 | case NETREG_UNREGISTERING: return " (unregistering)"; | |
4240 | case NETREG_UNREGISTERED: return " (unregistered)"; | |
4241 | case NETREG_RELEASED: return " (released)"; | |
4242 | case NETREG_DUMMY: return " (dummy)"; | |
4243 | } | |
4244 | ||
4245 | WARN_ONCE(1, "%s: unknown reg_state %d\n", dev->name, dev->reg_state); | |
4246 | return " (unknown)"; | |
4247 | } | |
4248 | ||
f629d208 | 4249 | __printf(3, 4) |
6ea754eb JP |
4250 | void netdev_printk(const char *level, const struct net_device *dev, |
4251 | const char *format, ...); | |
f629d208 | 4252 | __printf(2, 3) |
6ea754eb | 4253 | void netdev_emerg(const struct net_device *dev, const char *format, ...); |
f629d208 | 4254 | __printf(2, 3) |
6ea754eb | 4255 | void netdev_alert(const struct net_device *dev, const char *format, ...); |
f629d208 | 4256 | __printf(2, 3) |
6ea754eb | 4257 | void netdev_crit(const struct net_device *dev, const char *format, ...); |
f629d208 | 4258 | __printf(2, 3) |
6ea754eb | 4259 | void netdev_err(const struct net_device *dev, const char *format, ...); |
f629d208 | 4260 | __printf(2, 3) |
6ea754eb | 4261 | void netdev_warn(const struct net_device *dev, const char *format, ...); |
f629d208 | 4262 | __printf(2, 3) |
6ea754eb | 4263 | void netdev_notice(const struct net_device *dev, const char *format, ...); |
f629d208 | 4264 | __printf(2, 3) |
6ea754eb | 4265 | void netdev_info(const struct net_device *dev, const char *format, ...); |
571ba423 | 4266 | |
8909c9ad VK |
4267 | #define MODULE_ALIAS_NETDEV(device) \ |
4268 | MODULE_ALIAS("netdev-" device) | |
4269 | ||
b558c96f | 4270 | #if defined(CONFIG_DYNAMIC_DEBUG) |
571ba423 JP |
4271 | #define netdev_dbg(__dev, format, args...) \ |
4272 | do { \ | |
ffa10cb4 | 4273 | dynamic_netdev_dbg(__dev, format, ##args); \ |
571ba423 | 4274 | } while (0) |
b558c96f JC |
4275 | #elif defined(DEBUG) |
4276 | #define netdev_dbg(__dev, format, args...) \ | |
4277 | netdev_printk(KERN_DEBUG, __dev, format, ##args) | |
571ba423 JP |
4278 | #else |
4279 | #define netdev_dbg(__dev, format, args...) \ | |
4280 | ({ \ | |
4281 | if (0) \ | |
4282 | netdev_printk(KERN_DEBUG, __dev, format, ##args); \ | |
571ba423 JP |
4283 | }) |
4284 | #endif | |
4285 | ||
4286 | #if defined(VERBOSE_DEBUG) | |
4287 | #define netdev_vdbg netdev_dbg | |
4288 | #else | |
4289 | ||
4290 | #define netdev_vdbg(dev, format, args...) \ | |
4291 | ({ \ | |
4292 | if (0) \ | |
4293 | netdev_printk(KERN_DEBUG, dev, format, ##args); \ | |
4294 | 0; \ | |
4295 | }) | |
4296 | #endif | |
4297 | ||
4298 | /* | |
4299 | * netdev_WARN() acts like dev_printk(), but with the key difference | |
4300 | * of using a WARN/WARN_ON to get the message out, including the | |
4301 | * file/line information and a backtrace. | |
4302 | */ | |
4303 | #define netdev_WARN(dev, format, args...) \ | |
ccc7f496 VF |
4304 | WARN(1, "netdevice: %s%s\n" format, netdev_name(dev), \ |
4305 | netdev_reg_state(dev), ##args) | |
571ba423 | 4306 | |
b3d95c5c JP |
4307 | /* netif printk helpers, similar to netdev_printk */ |
4308 | ||
4309 | #define netif_printk(priv, type, level, dev, fmt, args...) \ | |
4310 | do { \ | |
4311 | if (netif_msg_##type(priv)) \ | |
4312 | netdev_printk(level, (dev), fmt, ##args); \ | |
4313 | } while (0) | |
4314 | ||
f45f4321 JP |
4315 | #define netif_level(level, priv, type, dev, fmt, args...) \ |
4316 | do { \ | |
4317 | if (netif_msg_##type(priv)) \ | |
4318 | netdev_##level(dev, fmt, ##args); \ | |
4319 | } while (0) | |
4320 | ||
b3d95c5c | 4321 | #define netif_emerg(priv, type, dev, fmt, args...) \ |
f45f4321 | 4322 | netif_level(emerg, priv, type, dev, fmt, ##args) |
b3d95c5c | 4323 | #define netif_alert(priv, type, dev, fmt, args...) \ |
f45f4321 | 4324 | netif_level(alert, priv, type, dev, fmt, ##args) |
b3d95c5c | 4325 | #define netif_crit(priv, type, dev, fmt, args...) \ |
f45f4321 | 4326 | netif_level(crit, priv, type, dev, fmt, ##args) |
b3d95c5c | 4327 | #define netif_err(priv, type, dev, fmt, args...) \ |
f45f4321 | 4328 | netif_level(err, priv, type, dev, fmt, ##args) |
b3d95c5c | 4329 | #define netif_warn(priv, type, dev, fmt, args...) \ |
f45f4321 | 4330 | netif_level(warn, priv, type, dev, fmt, ##args) |
b3d95c5c | 4331 | #define netif_notice(priv, type, dev, fmt, args...) \ |
f45f4321 | 4332 | netif_level(notice, priv, type, dev, fmt, ##args) |
b3d95c5c | 4333 | #define netif_info(priv, type, dev, fmt, args...) \ |
f45f4321 | 4334 | netif_level(info, priv, type, dev, fmt, ##args) |
b3d95c5c | 4335 | |
0053ea9c | 4336 | #if defined(CONFIG_DYNAMIC_DEBUG) |
b3d95c5c JP |
4337 | #define netif_dbg(priv, type, netdev, format, args...) \ |
4338 | do { \ | |
4339 | if (netif_msg_##type(priv)) \ | |
b5fb0a03 | 4340 | dynamic_netdev_dbg(netdev, format, ##args); \ |
b3d95c5c | 4341 | } while (0) |
0053ea9c JP |
4342 | #elif defined(DEBUG) |
4343 | #define netif_dbg(priv, type, dev, format, args...) \ | |
4344 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args) | |
b3d95c5c JP |
4345 | #else |
4346 | #define netif_dbg(priv, type, dev, format, args...) \ | |
4347 | ({ \ | |
4348 | if (0) \ | |
4349 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ | |
4350 | 0; \ | |
4351 | }) | |
4352 | #endif | |
4353 | ||
f617f276 EC |
4354 | /* if @cond then downgrade to debug, else print at @level */ |
4355 | #define netif_cond_dbg(priv, type, netdev, cond, level, fmt, args...) \ | |
4356 | do { \ | |
4357 | if (cond) \ | |
4358 | netif_dbg(priv, type, netdev, fmt, ##args); \ | |
4359 | else \ | |
4360 | netif_ ## level(priv, type, netdev, fmt, ##args); \ | |
4361 | } while (0) | |
4362 | ||
b3d95c5c | 4363 | #if defined(VERBOSE_DEBUG) |
bcfcc450 | 4364 | #define netif_vdbg netif_dbg |
b3d95c5c JP |
4365 | #else |
4366 | #define netif_vdbg(priv, type, dev, format, args...) \ | |
4367 | ({ \ | |
4368 | if (0) \ | |
a4ed89cb | 4369 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
b3d95c5c JP |
4370 | 0; \ |
4371 | }) | |
4372 | #endif | |
571ba423 | 4373 | |
900ff8c6 CW |
4374 | /* |
4375 | * The list of packet types we will receive (as opposed to discard) | |
4376 | * and the routines to invoke. | |
4377 | * | |
4378 | * Why 16. Because with 16 the only overlap we get on a hash of the | |
4379 | * low nibble of the protocol value is RARP/SNAP/X.25. | |
4380 | * | |
4381 | * NOTE: That is no longer true with the addition of VLAN tags. Not | |
4382 | * sure which should go first, but I bet it won't make much | |
4383 | * difference if we are running VLANs. The good news is that | |
4384 | * this protocol won't be in the list unless compiled in, so | |
4385 | * the average user (w/out VLANs) will not be adversely affected. | |
4386 | * --BLG | |
4387 | * | |
4388 | * 0800 IP | |
4389 | * 8100 802.1Q VLAN | |
4390 | * 0001 802.3 | |
4391 | * 0002 AX.25 | |
4392 | * 0004 802.2 | |
4393 | * 8035 RARP | |
4394 | * 0005 SNAP | |
4395 | * 0805 X.25 | |
4396 | * 0806 ARP | |
4397 | * 8137 IPX | |
4398 | * 0009 Localtalk | |
4399 | * 86DD IPv6 | |
4400 | */ | |
4401 | #define PTYPE_HASH_SIZE (16) | |
4402 | #define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) | |
4403 | ||
385a154c | 4404 | #endif /* _LINUX_NETDEVICE_H */ |