Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * Definitions for the Interfaces handler. | |
7 | * | |
8 | * Version: @(#)dev.h 1.0.10 08/12/93 | |
9 | * | |
02c30a84 | 10 | * Authors: Ross Biro |
1da177e4 LT |
11 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
12 | * Corey Minyard <wf-rch!minyard@relay.EU.net> | |
13 | * Donald J. Becker, <becker@cesdis.gsfc.nasa.gov> | |
113aa838 | 14 | * Alan Cox, <alan@lxorguk.ukuu.org.uk> |
1da177e4 LT |
15 | * Bjorn Ekwall. <bj0rn@blox.se> |
16 | * Pekka Riikonen <priikone@poseidon.pspt.fi> | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or | |
19 | * modify it under the terms of the GNU General Public License | |
20 | * as published by the Free Software Foundation; either version | |
21 | * 2 of the License, or (at your option) any later version. | |
22 | * | |
23 | * Moved to /usr/include/linux for NET3 | |
24 | */ | |
25 | #ifndef _LINUX_NETDEVICE_H | |
26 | #define _LINUX_NETDEVICE_H | |
27 | ||
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> |
bea3348e | 38 | #include <linux/workqueue.h> |
114cf580 | 39 | #include <linux/dynamic_queue_limits.h> |
1da177e4 | 40 | |
b1b67dd4 | 41 | #include <linux/ethtool.h> |
a050c33f | 42 | #include <net/net_namespace.h> |
7a6b6f51 | 43 | #ifdef CONFIG_DCB |
2f90b865 AD |
44 | #include <net/dcbnl.h> |
45 | #endif | |
5bc1421e | 46 | #include <net/netprio_cgroup.h> |
e817f856 | 47 | #include <net/xdp.h> |
a050c33f | 48 | |
a59e2ecb | 49 | #include <linux/netdev_features.h> |
77162022 | 50 | #include <linux/neighbour.h> |
607ca46e | 51 | #include <uapi/linux/netdevice.h> |
61bd3857 | 52 | #include <uapi/linux/if_bonding.h> |
e4c6734e | 53 | #include <uapi/linux/pkt_cls.h> |
59cc1f61 | 54 | #include <linux/hashtable.h> |
a59e2ecb | 55 | |
115c1d6e | 56 | struct netpoll_info; |
313162d0 | 57 | struct device; |
c1f19b51 | 58 | struct phy_device; |
2f657a60 | 59 | struct dsa_port; |
c6e970a0 | 60 | |
e679c9c1 | 61 | struct sfp_bus; |
704232c2 JB |
62 | /* 802.11 specific */ |
63 | struct wireless_dev; | |
98a18b6f AA |
64 | /* 802.15.4 specific */ |
65 | struct wpan_dev; | |
03c57747 | 66 | struct mpls_dev; |
7c46a640 AD |
67 | /* UDP Tunnel offloads */ |
68 | struct udp_tunnel_info; | |
a7862b45 | 69 | struct bpf_prog; |
814abfab | 70 | struct xdp_buff; |
1da177e4 | 71 | |
f629d208 JP |
72 | void netdev_set_default_ethtool_ops(struct net_device *dev, |
73 | const struct ethtool_ops *ops); | |
d07d7507 | 74 | |
9a1654ba JP |
75 | /* Backlog congestion levels */ |
76 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
77 | #define NET_RX_DROP 1 /* packet dropped */ | |
78 | ||
572a9d7b PM |
79 | /* |
80 | * Transmit return codes: transmit return codes originate from three different | |
81 | * namespaces: | |
82 | * | |
83 | * - qdisc return codes | |
84 | * - driver transmit return codes | |
85 | * - errno values | |
86 | * | |
87 | * Drivers are allowed to return any one of those in their hard_start_xmit() | |
88 | * function. Real network devices commonly used with qdiscs should only return | |
89 | * the driver transmit return codes though - when qdiscs are used, the actual | |
90 | * transmission happens asynchronously, so the value is not propagated to | |
5e82b4b2 BH |
91 | * higher layers. Virtual network devices transmit synchronously; in this case |
92 | * the driver transmit return codes are consumed by dev_queue_xmit(), and all | |
572a9d7b PM |
93 | * others are propagated to higher layers. |
94 | */ | |
95 | ||
96 | /* qdisc ->enqueue() return codes. */ | |
97 | #define NET_XMIT_SUCCESS 0x00 | |
9a1654ba JP |
98 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
99 | #define NET_XMIT_CN 0x02 /* congestion notification */ | |
9a1654ba | 100 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ |
1da177e4 | 101 | |
b9df3cb8 GR |
102 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
103 | * indicates that the device will soon be dropping packets, or already drops | |
104 | * some packets of the same priority; prompting us to send less aggressively. */ | |
572a9d7b | 105 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
1da177e4 LT |
106 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
107 | ||
dc1f8bf6 | 108 | /* Driver transmit return codes */ |
9a1654ba | 109 | #define NETDEV_TX_MASK 0xf0 |
572a9d7b | 110 | |
dc1f8bf6 | 111 | enum netdev_tx { |
572a9d7b | 112 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
9a1654ba JP |
113 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
114 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ | |
dc1f8bf6 SH |
115 | }; |
116 | typedef enum netdev_tx netdev_tx_t; | |
117 | ||
9a1654ba JP |
118 | /* |
119 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; | |
120 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. | |
121 | */ | |
122 | static inline bool dev_xmit_complete(int rc) | |
123 | { | |
124 | /* | |
125 | * Positive cases with an skb consumed by a driver: | |
126 | * - successful transmission (rc == NETDEV_TX_OK) | |
127 | * - error while transmitting (rc < 0) | |
128 | * - error while queueing to a different device (rc & NET_XMIT_MASK) | |
129 | */ | |
130 | if (likely(rc < NET_XMIT_MASK)) | |
131 | return true; | |
132 | ||
133 | return false; | |
134 | } | |
135 | ||
1da177e4 | 136 | /* |
5e82b4b2 | 137 | * Compute the worst-case header length according to the protocols |
1da177e4 LT |
138 | * used. |
139 | */ | |
fe2918b0 | 140 | |
c0eb4540 KS |
141 | #if defined(CONFIG_HYPERV_NET) |
142 | # define LL_MAX_HEADER 128 | |
143 | #elif defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) | |
8388e3da DM |
144 | # if defined(CONFIG_MAC80211_MESH) |
145 | # define LL_MAX_HEADER 128 | |
146 | # else | |
147 | # define LL_MAX_HEADER 96 | |
148 | # endif | |
1da177e4 | 149 | #else |
8388e3da | 150 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
151 | #endif |
152 | ||
d11ead75 BH |
153 | #if !IS_ENABLED(CONFIG_NET_IPIP) && !IS_ENABLED(CONFIG_NET_IPGRE) && \ |
154 | !IS_ENABLED(CONFIG_IPV6_SIT) && !IS_ENABLED(CONFIG_IPV6_TUNNEL) | |
1da177e4 LT |
155 | #define MAX_HEADER LL_MAX_HEADER |
156 | #else | |
157 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
158 | #endif | |
159 | ||
160 | /* | |
be1f3c2c BH |
161 | * Old network device statistics. Fields are native words |
162 | * (unsigned long) so they can be read and written atomically. | |
1da177e4 | 163 | */ |
fe2918b0 | 164 | |
d94d9fee | 165 | struct net_device_stats { |
3cfde79c BH |
166 | unsigned long rx_packets; |
167 | unsigned long tx_packets; | |
168 | unsigned long rx_bytes; | |
169 | unsigned long tx_bytes; | |
170 | unsigned long rx_errors; | |
171 | unsigned long tx_errors; | |
172 | unsigned long rx_dropped; | |
173 | unsigned long tx_dropped; | |
174 | unsigned long multicast; | |
1da177e4 | 175 | unsigned long collisions; |
1da177e4 | 176 | unsigned long rx_length_errors; |
3cfde79c BH |
177 | unsigned long rx_over_errors; |
178 | unsigned long rx_crc_errors; | |
179 | unsigned long rx_frame_errors; | |
180 | unsigned long rx_fifo_errors; | |
181 | unsigned long rx_missed_errors; | |
1da177e4 LT |
182 | unsigned long tx_aborted_errors; |
183 | unsigned long tx_carrier_errors; | |
184 | unsigned long tx_fifo_errors; | |
185 | unsigned long tx_heartbeat_errors; | |
186 | unsigned long tx_window_errors; | |
1da177e4 LT |
187 | unsigned long rx_compressed; |
188 | unsigned long tx_compressed; | |
189 | }; | |
190 | ||
1da177e4 LT |
191 | |
192 | #include <linux/cache.h> | |
193 | #include <linux/skbuff.h> | |
194 | ||
adc9300e | 195 | #ifdef CONFIG_RPS |
c5905afb IM |
196 | #include <linux/static_key.h> |
197 | extern struct static_key rps_needed; | |
13bfff25 | 198 | extern struct static_key rfs_needed; |
adc9300e ED |
199 | #endif |
200 | ||
1da177e4 LT |
201 | struct neighbour; |
202 | struct neigh_parms; | |
203 | struct sk_buff; | |
204 | ||
f001fde5 JP |
205 | struct netdev_hw_addr { |
206 | struct list_head list; | |
207 | unsigned char addr[MAX_ADDR_LEN]; | |
208 | unsigned char type; | |
ccffad25 JP |
209 | #define NETDEV_HW_ADDR_T_LAN 1 |
210 | #define NETDEV_HW_ADDR_T_SAN 2 | |
211 | #define NETDEV_HW_ADDR_T_SLAVE 3 | |
212 | #define NETDEV_HW_ADDR_T_UNICAST 4 | |
22bedad3 | 213 | #define NETDEV_HW_ADDR_T_MULTICAST 5 |
22bedad3 | 214 | bool global_use; |
4cd729b0 | 215 | int sync_cnt; |
8f8f103d | 216 | int refcount; |
4543fbef | 217 | int synced; |
f001fde5 JP |
218 | struct rcu_head rcu_head; |
219 | }; | |
220 | ||
31278e71 JP |
221 | struct netdev_hw_addr_list { |
222 | struct list_head list; | |
223 | int count; | |
224 | }; | |
225 | ||
22bedad3 JP |
226 | #define netdev_hw_addr_list_count(l) ((l)->count) |
227 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) | |
228 | #define netdev_hw_addr_list_for_each(ha, l) \ | |
229 | list_for_each_entry(ha, &(l)->list, list) | |
32e7bfc4 | 230 | |
22bedad3 JP |
231 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
232 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) | |
233 | #define netdev_for_each_uc_addr(ha, dev) \ | |
234 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) | |
6683ece3 | 235 | |
22bedad3 JP |
236 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
237 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) | |
18e225f2 | 238 | #define netdev_for_each_mc_addr(ha, dev) \ |
22bedad3 | 239 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
6683ece3 | 240 | |
d94d9fee | 241 | struct hh_cache { |
5b3dc2f3 | 242 | unsigned int hh_len; |
3644f0ce | 243 | seqlock_t hh_lock; |
1da177e4 LT |
244 | |
245 | /* cached hardware header; allow for machine alignment needs. */ | |
246 | #define HH_DATA_MOD 16 | |
247 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 248 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
249 | #define HH_DATA_ALIGN(__len) \ |
250 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
251 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
252 | }; | |
253 | ||
5e82b4b2 | 254 | /* Reserve HH_DATA_MOD byte-aligned hard_header_len, but at least that much. |
1da177e4 LT |
255 | * Alternative is: |
256 | * dev->hard_header_len ? (dev->hard_header_len + | |
257 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
258 | * | |
259 | * We could use other alignment values, but we must maintain the | |
260 | * relationship HH alignment <= LL alignment. | |
261 | */ | |
262 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 263 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 264 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 | 265 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 266 | |
3b04ddde SH |
267 | struct header_ops { |
268 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
269 | unsigned short type, const void *daddr, | |
95c96174 | 270 | const void *saddr, unsigned int len); |
3b04ddde | 271 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); |
e69dd336 | 272 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh, __be16 type); |
3b04ddde SH |
273 | void (*cache_update)(struct hh_cache *hh, |
274 | const struct net_device *dev, | |
275 | const unsigned char *haddr); | |
2793a23a | 276 | bool (*validate)(const char *ll_header, unsigned int len); |
3b04ddde SH |
277 | }; |
278 | ||
1da177e4 | 279 | /* These flag bits are private to the generic network queueing |
5e82b4b2 | 280 | * layer; they may not be explicitly referenced by any other |
1da177e4 LT |
281 | * code. |
282 | */ | |
283 | ||
d94d9fee | 284 | enum netdev_state_t { |
1da177e4 LT |
285 | __LINK_STATE_START, |
286 | __LINK_STATE_PRESENT, | |
1da177e4 | 287 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
288 | __LINK_STATE_LINKWATCH_PENDING, |
289 | __LINK_STATE_DORMANT, | |
1da177e4 LT |
290 | }; |
291 | ||
292 | ||
293 | /* | |
5e82b4b2 | 294 | * This structure holds boot-time configured netdevice settings. They |
fe2918b0 | 295 | * are then used in the device probing. |
1da177e4 LT |
296 | */ |
297 | struct netdev_boot_setup { | |
298 | char name[IFNAMSIZ]; | |
299 | struct ifmap map; | |
300 | }; | |
301 | #define NETDEV_BOOT_SETUP_MAX 8 | |
302 | ||
f629d208 | 303 | int __init netdev_boot_setup(char *str); |
1da177e4 | 304 | |
6312fe77 LR |
305 | struct gro_list { |
306 | struct list_head list; | |
307 | int count; | |
308 | }; | |
309 | ||
bea3348e SH |
310 | /* |
311 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
312 | */ | |
07d78363 | 313 | #define GRO_HASH_BUCKETS 8 |
bea3348e SH |
314 | struct napi_struct { |
315 | /* The poll_list must only be managed by the entity which | |
316 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
317 | * whoever atomically sets that bit can add this napi_struct | |
5e82b4b2 | 318 | * to the per-CPU poll_list, and whoever clears that bit |
bea3348e SH |
319 | * can remove from the list right before clearing the bit. |
320 | */ | |
321 | struct list_head poll_list; | |
322 | ||
323 | unsigned long state; | |
324 | int weight; | |
404f7c9e | 325 | unsigned int gro_count; |
bea3348e SH |
326 | int (*poll)(struct napi_struct *, int); |
327 | #ifdef CONFIG_NETPOLL | |
bea3348e | 328 | int poll_owner; |
bea3348e | 329 | #endif |
5d38a079 | 330 | struct net_device *dev; |
6312fe77 | 331 | struct gro_list gro_hash[GRO_HASH_BUCKETS]; |
5d38a079 | 332 | struct sk_buff *skb; |
3b47d303 | 333 | struct hrtimer timer; |
404f7c9e | 334 | struct list_head dev_list; |
af12fa6e ET |
335 | struct hlist_node napi_hash_node; |
336 | unsigned int napi_id; | |
bea3348e SH |
337 | }; |
338 | ||
d94d9fee | 339 | enum { |
bea3348e | 340 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
39e6c820 | 341 | NAPI_STATE_MISSED, /* reschedule a napi */ |
a0a46196 | 342 | NAPI_STATE_DISABLE, /* Disable pending */ |
7b363e44 | 343 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
d64b5e85 ED |
344 | NAPI_STATE_HASHED, /* In NAPI hash (busy polling possible) */ |
345 | NAPI_STATE_NO_BUSY_POLL,/* Do not add in napi_hash, no busy polling */ | |
217f6974 ED |
346 | NAPI_STATE_IN_BUSY_POLL,/* sk_busy_loop() owns this NAPI */ |
347 | }; | |
348 | ||
349 | enum { | |
39e6c820 ED |
350 | NAPIF_STATE_SCHED = BIT(NAPI_STATE_SCHED), |
351 | NAPIF_STATE_MISSED = BIT(NAPI_STATE_MISSED), | |
352 | NAPIF_STATE_DISABLE = BIT(NAPI_STATE_DISABLE), | |
353 | NAPIF_STATE_NPSVC = BIT(NAPI_STATE_NPSVC), | |
354 | NAPIF_STATE_HASHED = BIT(NAPI_STATE_HASHED), | |
355 | NAPIF_STATE_NO_BUSY_POLL = BIT(NAPI_STATE_NO_BUSY_POLL), | |
356 | NAPIF_STATE_IN_BUSY_POLL = BIT(NAPI_STATE_IN_BUSY_POLL), | |
bea3348e SH |
357 | }; |
358 | ||
5b252f0c | 359 | enum gro_result { |
d1c76af9 HX |
360 | GRO_MERGED, |
361 | GRO_MERGED_FREE, | |
362 | GRO_HELD, | |
363 | GRO_NORMAL, | |
364 | GRO_DROP, | |
25393d3f | 365 | GRO_CONSUMED, |
d1c76af9 | 366 | }; |
5b252f0c | 367 | typedef enum gro_result gro_result_t; |
d1c76af9 | 368 | |
8a4eb573 JP |
369 | /* |
370 | * enum rx_handler_result - Possible return values for rx_handlers. | |
371 | * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it | |
372 | * further. | |
373 | * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in | |
374 | * case skb->dev was changed by rx_handler. | |
375 | * @RX_HANDLER_EXACT: Force exact delivery, no wildcard. | |
5e82b4b2 | 376 | * @RX_HANDLER_PASS: Do nothing, pass the skb as if no rx_handler was called. |
8a4eb573 JP |
377 | * |
378 | * rx_handlers are functions called from inside __netif_receive_skb(), to do | |
379 | * special processing of the skb, prior to delivery to protocol handlers. | |
380 | * | |
381 | * Currently, a net_device can only have a single rx_handler registered. Trying | |
382 | * to register a second rx_handler will return -EBUSY. | |
383 | * | |
384 | * To register a rx_handler on a net_device, use netdev_rx_handler_register(). | |
385 | * To unregister a rx_handler on a net_device, use | |
386 | * netdev_rx_handler_unregister(). | |
387 | * | |
388 | * Upon return, rx_handler is expected to tell __netif_receive_skb() what to | |
389 | * do with the skb. | |
390 | * | |
5e82b4b2 | 391 | * If the rx_handler consumed the skb in some way, it should return |
8a4eb573 | 392 | * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for |
5e82b4b2 | 393 | * the skb to be delivered in some other way. |
8a4eb573 JP |
394 | * |
395 | * If the rx_handler changed skb->dev, to divert the skb to another | |
396 | * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the | |
397 | * new device will be called if it exists. | |
398 | * | |
5e82b4b2 | 399 | * If the rx_handler decides the skb should be ignored, it should return |
8a4eb573 | 400 | * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that |
d93cf068 | 401 | * are registered on exact device (ptype->dev == skb->dev). |
8a4eb573 | 402 | * |
5e82b4b2 | 403 | * If the rx_handler didn't change skb->dev, but wants the skb to be normally |
8a4eb573 JP |
404 | * delivered, it should return RX_HANDLER_PASS. |
405 | * | |
406 | * A device without a registered rx_handler will behave as if rx_handler | |
407 | * returned RX_HANDLER_PASS. | |
408 | */ | |
409 | ||
410 | enum rx_handler_result { | |
411 | RX_HANDLER_CONSUMED, | |
412 | RX_HANDLER_ANOTHER, | |
413 | RX_HANDLER_EXACT, | |
414 | RX_HANDLER_PASS, | |
415 | }; | |
416 | typedef enum rx_handler_result rx_handler_result_t; | |
417 | typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb); | |
ab95bfe0 | 418 | |
f629d208 | 419 | void __napi_schedule(struct napi_struct *n); |
bc9ad166 | 420 | void __napi_schedule_irqoff(struct napi_struct *n); |
bea3348e | 421 | |
4d29515f | 422 | static inline bool napi_disable_pending(struct napi_struct *n) |
a0a46196 DM |
423 | { |
424 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
425 | } | |
426 | ||
39e6c820 | 427 | bool napi_schedule_prep(struct napi_struct *n); |
bea3348e SH |
428 | |
429 | /** | |
430 | * napi_schedule - schedule NAPI poll | |
5e82b4b2 | 431 | * @n: NAPI context |
bea3348e SH |
432 | * |
433 | * Schedule NAPI poll routine to be called if it is not already | |
434 | * running. | |
435 | */ | |
436 | static inline void napi_schedule(struct napi_struct *n) | |
437 | { | |
438 | if (napi_schedule_prep(n)) | |
439 | __napi_schedule(n); | |
440 | } | |
441 | ||
bc9ad166 ED |
442 | /** |
443 | * napi_schedule_irqoff - schedule NAPI poll | |
5e82b4b2 | 444 | * @n: NAPI context |
bc9ad166 ED |
445 | * |
446 | * Variant of napi_schedule(), assuming hard irqs are masked. | |
447 | */ | |
448 | static inline void napi_schedule_irqoff(struct napi_struct *n) | |
449 | { | |
450 | if (napi_schedule_prep(n)) | |
451 | __napi_schedule_irqoff(n); | |
452 | } | |
453 | ||
bfe13f54 | 454 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
4d29515f | 455 | static inline bool napi_reschedule(struct napi_struct *napi) |
bfe13f54 RD |
456 | { |
457 | if (napi_schedule_prep(napi)) { | |
458 | __napi_schedule(napi); | |
4d29515f | 459 | return true; |
bfe13f54 | 460 | } |
4d29515f | 461 | return false; |
bfe13f54 RD |
462 | } |
463 | ||
364b6055 | 464 | bool napi_complete_done(struct napi_struct *n, int work_done); |
bea3348e SH |
465 | /** |
466 | * napi_complete - NAPI processing complete | |
5e82b4b2 | 467 | * @n: NAPI context |
bea3348e SH |
468 | * |
469 | * Mark NAPI processing as complete. | |
3b47d303 | 470 | * Consider using napi_complete_done() instead. |
364b6055 | 471 | * Return false if device should avoid rearming interrupts. |
bea3348e | 472 | */ |
364b6055 | 473 | static inline bool napi_complete(struct napi_struct *n) |
3b47d303 ED |
474 | { |
475 | return napi_complete_done(n, 0); | |
476 | } | |
bea3348e | 477 | |
af12fa6e ET |
478 | /** |
479 | * napi_hash_del - remove a NAPI from global table | |
5e82b4b2 | 480 | * @napi: NAPI context |
af12fa6e | 481 | * |
5e82b4b2 | 482 | * Warning: caller must observe RCU grace period |
34cbe27e ED |
483 | * before freeing memory containing @napi, if |
484 | * this function returns true. | |
93d05d4a | 485 | * Note: core networking stack automatically calls it |
5e82b4b2 | 486 | * from netif_napi_del(). |
93d05d4a | 487 | * Drivers might want to call this helper to combine all |
5e82b4b2 | 488 | * the needed RCU grace periods into a single one. |
af12fa6e | 489 | */ |
34cbe27e | 490 | bool napi_hash_del(struct napi_struct *napi); |
af12fa6e | 491 | |
bea3348e SH |
492 | /** |
493 | * napi_disable - prevent NAPI from scheduling | |
5e82b4b2 | 494 | * @n: NAPI context |
bea3348e SH |
495 | * |
496 | * Stop NAPI from being scheduled on this context. | |
497 | * Waits till any outstanding processing completes. | |
498 | */ | |
3b47d303 | 499 | void napi_disable(struct napi_struct *n); |
bea3348e SH |
500 | |
501 | /** | |
502 | * napi_enable - enable NAPI scheduling | |
5e82b4b2 | 503 | * @n: NAPI context |
bea3348e SH |
504 | * |
505 | * Resume NAPI from being scheduled on this context. | |
506 | * Must be paired with napi_disable. | |
507 | */ | |
508 | static inline void napi_enable(struct napi_struct *n) | |
509 | { | |
510 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
4e857c58 | 511 | smp_mb__before_atomic(); |
bea3348e | 512 | clear_bit(NAPI_STATE_SCHED, &n->state); |
2d8bff12 | 513 | clear_bit(NAPI_STATE_NPSVC, &n->state); |
bea3348e SH |
514 | } |
515 | ||
c264c3de SH |
516 | /** |
517 | * napi_synchronize - wait until NAPI is not running | |
5e82b4b2 | 518 | * @n: NAPI context |
c264c3de SH |
519 | * |
520 | * Wait until NAPI is done being scheduled on this context. | |
521 | * Waits till any outstanding processing completes but | |
522 | * does not disable future activations. | |
523 | */ | |
524 | static inline void napi_synchronize(const struct napi_struct *n) | |
525 | { | |
facc432f AB |
526 | if (IS_ENABLED(CONFIG_SMP)) |
527 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
528 | msleep(1); | |
529 | else | |
530 | barrier(); | |
c264c3de | 531 | } |
c264c3de | 532 | |
d94d9fee | 533 | enum netdev_queue_state_t { |
73466498 TH |
534 | __QUEUE_STATE_DRV_XOFF, |
535 | __QUEUE_STATE_STACK_XOFF, | |
c3f26a26 | 536 | __QUEUE_STATE_FROZEN, |
79d16385 | 537 | }; |
8e2f1a63 DB |
538 | |
539 | #define QUEUE_STATE_DRV_XOFF (1 << __QUEUE_STATE_DRV_XOFF) | |
540 | #define QUEUE_STATE_STACK_XOFF (1 << __QUEUE_STATE_STACK_XOFF) | |
541 | #define QUEUE_STATE_FROZEN (1 << __QUEUE_STATE_FROZEN) | |
542 | ||
543 | #define QUEUE_STATE_ANY_XOFF (QUEUE_STATE_DRV_XOFF | QUEUE_STATE_STACK_XOFF) | |
544 | #define QUEUE_STATE_ANY_XOFF_OR_FROZEN (QUEUE_STATE_ANY_XOFF | \ | |
545 | QUEUE_STATE_FROZEN) | |
546 | #define QUEUE_STATE_DRV_XOFF_OR_FROZEN (QUEUE_STATE_DRV_XOFF | \ | |
547 | QUEUE_STATE_FROZEN) | |
548 | ||
73466498 TH |
549 | /* |
550 | * __QUEUE_STATE_DRV_XOFF is used by drivers to stop the transmit queue. The | |
551 | * netif_tx_* functions below are used to manipulate this flag. The | |
552 | * __QUEUE_STATE_STACK_XOFF flag is used by the stack to stop the transmit | |
553 | * queue independently. The netif_xmit_*stopped functions below are called | |
554 | * to check if the queue has been stopped by the driver or stack (either | |
555 | * of the XOFF bits are set in the state). Drivers should not need to call | |
556 | * netif_xmit*stopped functions, they should only be using netif_tx_*. | |
557 | */ | |
79d16385 | 558 | |
bb949fbd | 559 | struct netdev_queue { |
6a321cb3 | 560 | /* |
5e82b4b2 | 561 | * read-mostly part |
6a321cb3 | 562 | */ |
bb949fbd | 563 | struct net_device *dev; |
46e5da40 | 564 | struct Qdisc __rcu *qdisc; |
b0e1e646 | 565 | struct Qdisc *qdisc_sleeping; |
ccf5ff69 | 566 | #ifdef CONFIG_SYSFS |
1d24eb48 TH |
567 | struct kobject kobj; |
568 | #endif | |
f2cd2d3e ED |
569 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
570 | int numa_node; | |
571 | #endif | |
c0ef079c FW |
572 | unsigned long tx_maxrate; |
573 | /* | |
574 | * Number of TX timeouts for this queue | |
575 | * (/sys/class/net/DEV/Q/trans_timeout) | |
576 | */ | |
577 | unsigned long trans_timeout; | |
ffcfe25b AD |
578 | |
579 | /* Subordinate device that the queue has been assigned to */ | |
580 | struct net_device *sb_dev; | |
6a321cb3 | 581 | /* |
5e82b4b2 | 582 | * write-mostly part |
6a321cb3 ED |
583 | */ |
584 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
585 | int xmit_lock_owner; | |
9d21493b | 586 | /* |
9b36627a | 587 | * Time (in jiffies) of last Tx |
9d21493b ED |
588 | */ |
589 | unsigned long trans_start; | |
ccf5ff69 | 590 | |
114cf580 TH |
591 | unsigned long state; |
592 | ||
593 | #ifdef CONFIG_BQL | |
594 | struct dql dql; | |
595 | #endif | |
e8a0464c | 596 | } ____cacheline_aligned_in_smp; |
bb949fbd | 597 | |
79134e6c ED |
598 | extern int sysctl_fb_tunnels_only_for_init_net; |
599 | ||
600 | static inline bool net_has_fallback_tunnels(const struct net *net) | |
601 | { | |
be9fc097 AB |
602 | return net == &init_net || |
603 | !IS_ENABLED(CONFIG_SYSCTL) || | |
604 | !sysctl_fb_tunnels_only_for_init_net; | |
79134e6c ED |
605 | } |
606 | ||
f2cd2d3e ED |
607 | static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) |
608 | { | |
609 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
610 | return q->numa_node; | |
611 | #else | |
b236da69 | 612 | return NUMA_NO_NODE; |
f2cd2d3e ED |
613 | #endif |
614 | } | |
615 | ||
616 | static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node) | |
617 | { | |
618 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
619 | q->numa_node = node; | |
620 | #endif | |
621 | } | |
622 | ||
df334545 | 623 | #ifdef CONFIG_RPS |
0a9627f2 TH |
624 | /* |
625 | * This structure holds an RPS map which can be of variable length. The | |
626 | * map is an array of CPUs. | |
627 | */ | |
628 | struct rps_map { | |
629 | unsigned int len; | |
630 | struct rcu_head rcu; | |
631 | u16 cpus[0]; | |
632 | }; | |
60b778ce | 633 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + ((_num) * sizeof(u16))) |
0a9627f2 | 634 | |
fec5e652 | 635 | /* |
c445477d BH |
636 | * The rps_dev_flow structure contains the mapping of a flow to a CPU, the |
637 | * tail pointer for that CPU's input queue at the time of last enqueue, and | |
638 | * a hardware filter index. | |
fec5e652 TH |
639 | */ |
640 | struct rps_dev_flow { | |
641 | u16 cpu; | |
c445477d | 642 | u16 filter; |
fec5e652 TH |
643 | unsigned int last_qtail; |
644 | }; | |
c445477d | 645 | #define RPS_NO_FILTER 0xffff |
fec5e652 TH |
646 | |
647 | /* | |
648 | * The rps_dev_flow_table structure contains a table of flow mappings. | |
649 | */ | |
650 | struct rps_dev_flow_table { | |
651 | unsigned int mask; | |
652 | struct rcu_head rcu; | |
fec5e652 TH |
653 | struct rps_dev_flow flows[0]; |
654 | }; | |
655 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ | |
60b778ce | 656 | ((_num) * sizeof(struct rps_dev_flow))) |
fec5e652 TH |
657 | |
658 | /* | |
659 | * The rps_sock_flow_table contains mappings of flows to the last CPU | |
660 | * on which they were processed by the application (set in recvmsg). | |
5e82b4b2 BH |
661 | * Each entry is a 32bit value. Upper part is the high-order bits |
662 | * of flow hash, lower part is CPU number. | |
567e4b79 | 663 | * rps_cpu_mask is used to partition the space, depending on number of |
5e82b4b2 BH |
664 | * possible CPUs : rps_cpu_mask = roundup_pow_of_two(nr_cpu_ids) - 1 |
665 | * For example, if 64 CPUs are possible, rps_cpu_mask = 0x3f, | |
567e4b79 | 666 | * meaning we use 32-6=26 bits for the hash. |
fec5e652 TH |
667 | */ |
668 | struct rps_sock_flow_table { | |
567e4b79 | 669 | u32 mask; |
93c1af6c ED |
670 | |
671 | u32 ents[0] ____cacheline_aligned_in_smp; | |
fec5e652 | 672 | }; |
567e4b79 | 673 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (offsetof(struct rps_sock_flow_table, ents[_num])) |
fec5e652 TH |
674 | |
675 | #define RPS_NO_CPU 0xffff | |
676 | ||
567e4b79 ED |
677 | extern u32 rps_cpu_mask; |
678 | extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; | |
679 | ||
fec5e652 TH |
680 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, |
681 | u32 hash) | |
682 | { | |
683 | if (table && hash) { | |
567e4b79 ED |
684 | unsigned int index = hash & table->mask; |
685 | u32 val = hash & ~rps_cpu_mask; | |
fec5e652 | 686 | |
5e82b4b2 | 687 | /* We only give a hint, preemption can change CPU under us */ |
567e4b79 | 688 | val |= raw_smp_processor_id(); |
fec5e652 | 689 | |
567e4b79 ED |
690 | if (table->ents[index] != val) |
691 | table->ents[index] = val; | |
fec5e652 TH |
692 | } |
693 | } | |
694 | ||
c445477d | 695 | #ifdef CONFIG_RFS_ACCEL |
f629d208 JP |
696 | bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, u32 flow_id, |
697 | u16 filter_id); | |
c445477d | 698 | #endif |
a953be53 | 699 | #endif /* CONFIG_RPS */ |
c445477d | 700 | |
0a9627f2 TH |
701 | /* This structure contains an instance of an RX queue. */ |
702 | struct netdev_rx_queue { | |
a953be53 | 703 | #ifdef CONFIG_RPS |
6e3f7faf ED |
704 | struct rps_map __rcu *rps_map; |
705 | struct rps_dev_flow_table __rcu *rps_flow_table; | |
a953be53 | 706 | #endif |
6e3f7faf | 707 | struct kobject kobj; |
fe822240 | 708 | struct net_device *dev; |
e817f856 | 709 | struct xdp_rxq_info xdp_rxq; |
0a9627f2 | 710 | } ____cacheline_aligned_in_smp; |
a953be53 MD |
711 | |
712 | /* | |
713 | * RX queue sysfs structures and functions. | |
714 | */ | |
715 | struct rx_queue_attribute { | |
716 | struct attribute attr; | |
718ad681 | 717 | ssize_t (*show)(struct netdev_rx_queue *queue, char *buf); |
a953be53 | 718 | ssize_t (*store)(struct netdev_rx_queue *queue, |
718ad681 | 719 | const char *buf, size_t len); |
a953be53 | 720 | }; |
d314774c | 721 | |
bf264145 TH |
722 | #ifdef CONFIG_XPS |
723 | /* | |
724 | * This structure holds an XPS map which can be of variable length. The | |
725 | * map is an array of queues. | |
726 | */ | |
727 | struct xps_map { | |
728 | unsigned int len; | |
729 | unsigned int alloc_len; | |
730 | struct rcu_head rcu; | |
731 | u16 queues[0]; | |
732 | }; | |
60b778ce | 733 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + ((_num) * sizeof(u16))) |
c59f419b HD |
734 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_ALIGN(offsetof(struct xps_map, queues[1])) \ |
735 | - sizeof(struct xps_map)) / sizeof(u16)) | |
bf264145 TH |
736 | |
737 | /* | |
738 | * This structure holds all XPS maps for device. Maps are indexed by CPU. | |
739 | */ | |
740 | struct xps_dev_maps { | |
741 | struct rcu_head rcu; | |
80d19669 | 742 | struct xps_map __rcu *attr_map[0]; /* Either CPUs map or RXQs map */ |
bf264145 | 743 | }; |
80d19669 AN |
744 | |
745 | #define XPS_CPU_DEV_MAPS_SIZE(_tcs) (sizeof(struct xps_dev_maps) + \ | |
184c449f | 746 | (nr_cpu_ids * (_tcs) * sizeof(struct xps_map *))) |
80d19669 AN |
747 | |
748 | #define XPS_RXQ_DEV_MAPS_SIZE(_tcs, _rxqs) (sizeof(struct xps_dev_maps) +\ | |
749 | (_rxqs * (_tcs) * sizeof(struct xps_map *))) | |
750 | ||
bf264145 TH |
751 | #endif /* CONFIG_XPS */ |
752 | ||
4f57c087 JF |
753 | #define TC_MAX_QUEUE 16 |
754 | #define TC_BITMASK 15 | |
755 | /* HW offloaded queuing disciplines txq count and offset maps */ | |
756 | struct netdev_tc_txq { | |
757 | u16 count; | |
758 | u16 offset; | |
759 | }; | |
760 | ||
68bad94e NP |
761 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
762 | /* | |
763 | * This structure is to hold information about the device | |
764 | * configured to run FCoE protocol stack. | |
765 | */ | |
766 | struct netdev_fcoe_hbainfo { | |
767 | char manufacturer[64]; | |
768 | char serial_number[64]; | |
769 | char hardware_version[64]; | |
770 | char driver_version[64]; | |
771 | char optionrom_version[64]; | |
772 | char firmware_version[64]; | |
773 | char model[256]; | |
774 | char model_description[256]; | |
775 | }; | |
776 | #endif | |
777 | ||
02637fce | 778 | #define MAX_PHYS_ITEM_ID_LEN 32 |
66b52b0d | 779 | |
02637fce JP |
780 | /* This structure holds a unique identifier to identify some |
781 | * physical item (port for example) used by a netdevice. | |
66b52b0d | 782 | */ |
02637fce JP |
783 | struct netdev_phys_item_id { |
784 | unsigned char id[MAX_PHYS_ITEM_ID_LEN]; | |
66b52b0d JP |
785 | unsigned char id_len; |
786 | }; | |
787 | ||
d754f98b SF |
788 | static inline bool netdev_phys_item_id_same(struct netdev_phys_item_id *a, |
789 | struct netdev_phys_item_id *b) | |
790 | { | |
791 | return a->id_len == b->id_len && | |
792 | memcmp(a->id, b->id, a->id_len) == 0; | |
793 | } | |
794 | ||
99932d4f DB |
795 | typedef u16 (*select_queue_fallback_t)(struct net_device *dev, |
796 | struct sk_buff *skb); | |
797 | ||
2572ac53 | 798 | enum tc_setup_type { |
575ed7d3 | 799 | TC_SETUP_QDISC_MQPRIO, |
a1b7c5fd | 800 | TC_SETUP_CLSU32, |
5b33f488 | 801 | TC_SETUP_CLSFLOWER, |
ade9b658 | 802 | TC_SETUP_CLSMATCHALL, |
332ae8e2 | 803 | TC_SETUP_CLSBPF, |
8c4083b3 | 804 | TC_SETUP_BLOCK, |
8521db4c | 805 | TC_SETUP_QDISC_CBS, |
602f3baf | 806 | TC_SETUP_QDISC_RED, |
7fdb61b4 | 807 | TC_SETUP_QDISC_PRIO, |
f971b132 | 808 | TC_SETUP_QDISC_MQ, |
25db26a9 | 809 | TC_SETUP_QDISC_ETF, |
16e5cc64 JF |
810 | }; |
811 | ||
f4e63525 JK |
812 | /* These structures hold the attributes of bpf state that are being passed |
813 | * to the netdevice through the bpf op. | |
a7862b45 | 814 | */ |
f4e63525 | 815 | enum bpf_netdev_command { |
a7862b45 BB |
816 | /* Set or clear a bpf program used in the earliest stages of packet |
817 | * rx. The prog will have been loaded as BPF_PROG_TYPE_XDP. The callee | |
818 | * is responsible for calling bpf_prog_put on any old progs that are | |
819 | * stored. In case of error, the callee need not release the new prog | |
820 | * reference, but on success it takes ownership and must bpf_prog_put | |
821 | * when it is no longer used. | |
822 | */ | |
823 | XDP_SETUP_PROG, | |
ee5d032f | 824 | XDP_SETUP_PROG_HW, |
a7862b45 | 825 | /* Check if a bpf program is set on the device. The callee should |
ce158e58 JK |
826 | * set @prog_attached to one of XDP_ATTACHED_* values, note that "true" |
827 | * is equivalent to XDP_ATTACHED_DRV. | |
a7862b45 BB |
828 | */ |
829 | XDP_QUERY_PROG, | |
ab3f0063 JK |
830 | /* BPF program for offload callbacks, invoked at program load time. */ |
831 | BPF_OFFLOAD_VERIFIER_PREP, | |
832 | BPF_OFFLOAD_TRANSLATE, | |
833 | BPF_OFFLOAD_DESTROY, | |
a3884572 JK |
834 | BPF_OFFLOAD_MAP_ALLOC, |
835 | BPF_OFFLOAD_MAP_FREE, | |
74515c57 BT |
836 | XDP_QUERY_XSK_UMEM, |
837 | XDP_SETUP_XSK_UMEM, | |
a7862b45 BB |
838 | }; |
839 | ||
cae1927c | 840 | struct bpf_prog_offload_ops; |
ddf9f970 | 841 | struct netlink_ext_ack; |
74515c57 | 842 | struct xdp_umem; |
ddf9f970 | 843 | |
f4e63525 JK |
844 | struct netdev_bpf { |
845 | enum bpf_netdev_command command; | |
a7862b45 BB |
846 | union { |
847 | /* XDP_SETUP_PROG */ | |
ddf9f970 | 848 | struct { |
32d60277 | 849 | u32 flags; |
ddf9f970 JK |
850 | struct bpf_prog *prog; |
851 | struct netlink_ext_ack *extack; | |
852 | }; | |
a7862b45 | 853 | /* XDP_QUERY_PROG */ |
58038695 | 854 | struct { |
ce158e58 | 855 | u8 prog_attached; |
58038695 | 856 | u32 prog_id; |
92f0292b JK |
857 | /* flags with which program was installed */ |
858 | u32 prog_flags; | |
58038695 | 859 | }; |
ab3f0063 JK |
860 | /* BPF_OFFLOAD_VERIFIER_PREP */ |
861 | struct { | |
862 | struct bpf_prog *prog; | |
cae1927c | 863 | const struct bpf_prog_offload_ops *ops; /* callee set */ |
ab3f0063 JK |
864 | } verifier; |
865 | /* BPF_OFFLOAD_TRANSLATE, BPF_OFFLOAD_DESTROY */ | |
866 | struct { | |
867 | struct bpf_prog *prog; | |
868 | } offload; | |
a3884572 JK |
869 | /* BPF_OFFLOAD_MAP_ALLOC, BPF_OFFLOAD_MAP_FREE */ |
870 | struct { | |
871 | struct bpf_offloaded_map *offmap; | |
872 | }; | |
74515c57 BT |
873 | /* XDP_SETUP_XSK_UMEM */ |
874 | struct { | |
875 | struct xdp_umem *umem; | |
876 | u16 queue_id; | |
877 | } xsk; | |
a7862b45 BB |
878 | }; |
879 | }; | |
16e5cc64 | 880 | |
d77e38e6 SK |
881 | #ifdef CONFIG_XFRM_OFFLOAD |
882 | struct xfrmdev_ops { | |
883 | int (*xdo_dev_state_add) (struct xfrm_state *x); | |
884 | void (*xdo_dev_state_delete) (struct xfrm_state *x); | |
885 | void (*xdo_dev_state_free) (struct xfrm_state *x); | |
886 | bool (*xdo_dev_offload_ok) (struct sk_buff *skb, | |
887 | struct xfrm_state *x); | |
50bd870a | 888 | void (*xdo_dev_state_advance_esn) (struct xfrm_state *x); |
d77e38e6 SK |
889 | }; |
890 | #endif | |
891 | ||
a5c37c63 IL |
892 | #if IS_ENABLED(CONFIG_TLS_DEVICE) |
893 | enum tls_offload_ctx_dir { | |
894 | TLS_OFFLOAD_CTX_DIR_RX, | |
895 | TLS_OFFLOAD_CTX_DIR_TX, | |
896 | }; | |
897 | ||
898 | struct tls_crypto_info; | |
899 | struct tls_context; | |
900 | ||
901 | struct tlsdev_ops { | |
902 | int (*tls_dev_add)(struct net_device *netdev, struct sock *sk, | |
903 | enum tls_offload_ctx_dir direction, | |
904 | struct tls_crypto_info *crypto_info, | |
905 | u32 start_offload_tcp_sn); | |
906 | void (*tls_dev_del)(struct net_device *netdev, | |
907 | struct tls_context *ctx, | |
908 | enum tls_offload_ctx_dir direction); | |
909 | }; | |
910 | #endif | |
911 | ||
6c557001 FW |
912 | struct dev_ifalias { |
913 | struct rcu_head rcuhead; | |
914 | char ifalias[]; | |
915 | }; | |
916 | ||
d314774c SH |
917 | /* |
918 | * This structure defines the management hooks for network devices. | |
00829823 SH |
919 | * The following hooks can be defined; unless noted otherwise, they are |
920 | * optional and can be filled with a null pointer. | |
d314774c SH |
921 | * |
922 | * int (*ndo_init)(struct net_device *dev); | |
5e82b4b2 BH |
923 | * This function is called once when a network device is registered. |
924 | * The network device can use this for any late stage initialization | |
925 | * or semantic validation. It can fail with an error code which will | |
926 | * be propagated back to register_netdev. | |
d314774c SH |
927 | * |
928 | * void (*ndo_uninit)(struct net_device *dev); | |
929 | * This function is called when device is unregistered or when registration | |
930 | * fails. It is not called if init fails. | |
931 | * | |
932 | * int (*ndo_open)(struct net_device *dev); | |
5e82b4b2 | 933 | * This function is called when a network device transitions to the up |
d314774c SH |
934 | * state. |
935 | * | |
936 | * int (*ndo_stop)(struct net_device *dev); | |
5e82b4b2 | 937 | * This function is called when a network device transitions to the down |
d314774c SH |
938 | * state. |
939 | * | |
dc1f8bf6 SH |
940 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
941 | * struct net_device *dev); | |
00829823 | 942 | * Called when a packet needs to be transmitted. |
e79d8429 RR |
943 | * Returns NETDEV_TX_OK. Can return NETDEV_TX_BUSY, but you should stop |
944 | * the queue before that can happen; it's for obsolete devices and weird | |
945 | * corner cases, but the stack really does a non-trivial amount | |
946 | * of useless work if you return NETDEV_TX_BUSY. | |
5e82b4b2 | 947 | * Required; cannot be NULL. |
00829823 | 948 | * |
1a2a1444 DM |
949 | * netdev_features_t (*ndo_features_check)(struct sk_buff *skb, |
950 | * struct net_device *dev | |
951 | * netdev_features_t features); | |
952 | * Called by core transmit path to determine if device is capable of | |
953 | * performing offload operations on a given packet. This is to give | |
954 | * the device an opportunity to implement any restrictions that cannot | |
955 | * be otherwise expressed by feature flags. The check is called with | |
956 | * the set of features that the stack has calculated and it returns | |
957 | * those the driver believes to be appropriate. | |
cdba756f | 958 | * |
f663dd9a | 959 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb, |
99932d4f | 960 | * void *accel_priv, select_queue_fallback_t fallback); |
5e82b4b2 | 961 | * Called to decide which queue to use when device supports multiple |
00829823 SH |
962 | * transmit queues. |
963 | * | |
d314774c SH |
964 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
965 | * This function is called to allow device receiver to make | |
5e82b4b2 | 966 | * changes to configuration when multicast or promiscuous is enabled. |
d314774c SH |
967 | * |
968 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
969 | * This function is called device changes address list filtering. | |
01789349 | 970 | * If driver handles unicast address filtering, it should set |
5e82b4b2 | 971 | * IFF_UNICAST_FLT in its priv_flags. |
d314774c SH |
972 | * |
973 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
974 | * This function is called when the Media Access Control address | |
37b607c5 | 975 | * needs to be changed. If this interface is not defined, the |
5e82b4b2 | 976 | * MAC address can not be changed. |
d314774c SH |
977 | * |
978 | * int (*ndo_validate_addr)(struct net_device *dev); | |
979 | * Test if Media Access Control address is valid for the device. | |
980 | * | |
981 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
5e82b4b2 BH |
982 | * Called when a user requests an ioctl which can't be handled by |
983 | * the generic interface code. If not defined ioctls return | |
d314774c SH |
984 | * not supported error code. |
985 | * | |
986 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); | |
987 | * Used to set network devices bus interface parameters. This interface | |
5e82b4b2 | 988 | * is retained for legacy reasons; new devices should use the bus |
d314774c SH |
989 | * interface (PCI) for low level management. |
990 | * | |
991 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
992 | * Called when a user wants to change the Maximum Transfer Unit | |
db46a0e1 | 993 | * of a device. |
d314774c | 994 | * |
00829823 | 995 | * void (*ndo_tx_timeout)(struct net_device *dev); |
5e82b4b2 | 996 | * Callback used when the transmitter has not made any progress |
d314774c SH |
997 | * for dev->watchdog ticks. |
998 | * | |
bc1f4470 | 999 | * void (*ndo_get_stats64)(struct net_device *dev, |
1000 | * struct rtnl_link_stats64 *storage); | |
d308e38f | 1001 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
d314774c | 1002 | * Called when a user wants to get the network device usage |
be1f3c2c | 1003 | * statistics. Drivers must do one of the following: |
3cfde79c BH |
1004 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
1005 | * rtnl_link_stats64 structure passed by the caller. | |
82695d9b | 1006 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
be1f3c2c BH |
1007 | * (which should normally be dev->stats) and return a pointer to |
1008 | * it. The structure may be changed asynchronously only if each | |
1009 | * field is written atomically. | |
1010 | * 3. Update dev->stats asynchronously and atomically, and define | |
1011 | * neither operation. | |
d314774c | 1012 | * |
3df5b3c6 | 1013 | * bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id) |
2c9d85d4 NF |
1014 | * Return true if this device supports offload stats of this attr_id. |
1015 | * | |
1016 | * int (*ndo_get_offload_stats)(int attr_id, const struct net_device *dev, | |
1017 | * void *attr_data) | |
1018 | * Get statistics for offload operations by attr_id. Write it into the | |
1019 | * attr_data pointer. | |
1020 | * | |
5d632cb7 | 1021 | * int (*ndo_vlan_rx_add_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 1022 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 1023 | * VLAN id is registered. |
d314774c | 1024 | * |
5d632cb7 | 1025 | * int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 1026 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 1027 | * VLAN id is unregistered. |
d314774c SH |
1028 | * |
1029 | * void (*ndo_poll_controller)(struct net_device *dev); | |
95c26df8 WM |
1030 | * |
1031 | * SR-IOV management functions. | |
1032 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); | |
79aab093 MS |
1033 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, |
1034 | * u8 qos, __be16 proto); | |
ed616689 SC |
1035 | * int (*ndo_set_vf_rate)(struct net_device *dev, int vf, int min_tx_rate, |
1036 | * int max_tx_rate); | |
5f8444a3 | 1037 | * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting); |
dd461d6a | 1038 | * int (*ndo_set_vf_trust)(struct net_device *dev, int vf, bool setting); |
95c26df8 WM |
1039 | * int (*ndo_get_vf_config)(struct net_device *dev, |
1040 | * int vf, struct ifla_vf_info *ivf); | |
1d8faf48 | 1041 | * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state); |
57b61080 SF |
1042 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
1043 | * struct nlattr *port[]); | |
01a3d796 VZ |
1044 | * |
1045 | * Enable or disable the VF ability to query its RSS Redirection Table and | |
1046 | * Hash Key. This is needed since on some devices VF share this information | |
5e82b4b2 | 1047 | * with PF and querying it may introduce a theoretical security risk. |
01a3d796 | 1048 | * int (*ndo_set_vf_rss_query_en)(struct net_device *dev, int vf, bool setting); |
57b61080 | 1049 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); |
2572ac53 | 1050 | * int (*ndo_setup_tc)(struct net_device *dev, enum tc_setup_type type, |
de4784ca | 1051 | * void *type_data); |
6a4bc2b4 FF |
1052 | * Called to setup any 'tc' scheduler, classifier or action on @dev. |
1053 | * This is always called from the stack with the rtnl lock held and netif | |
1054 | * tx queues stopped. This allows the netdevice to perform queue | |
1055 | * management safely. | |
c445477d | 1056 | * |
e9bce845 YZ |
1057 | * Fiber Channel over Ethernet (FCoE) offload functions. |
1058 | * int (*ndo_fcoe_enable)(struct net_device *dev); | |
1059 | * Called when the FCoE protocol stack wants to start using LLD for FCoE | |
1060 | * so the underlying device can perform whatever needed configuration or | |
1061 | * initialization to support acceleration of FCoE traffic. | |
1062 | * | |
1063 | * int (*ndo_fcoe_disable)(struct net_device *dev); | |
1064 | * Called when the FCoE protocol stack wants to stop using LLD for FCoE | |
1065 | * so the underlying device can perform whatever needed clean-ups to | |
1066 | * stop supporting acceleration of FCoE traffic. | |
1067 | * | |
1068 | * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid, | |
1069 | * struct scatterlist *sgl, unsigned int sgc); | |
1070 | * Called when the FCoE Initiator wants to initialize an I/O that | |
1071 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
1072 | * perform necessary setup and returns 1 to indicate the device is set up | |
1073 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
1074 | * | |
1075 | * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); | |
1076 | * Called when the FCoE Initiator/Target is done with the DDPed I/O as | |
1077 | * indicated by the FC exchange id 'xid', so the underlying device can | |
1078 | * clean up and reuse resources for later DDP requests. | |
1079 | * | |
1080 | * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid, | |
1081 | * struct scatterlist *sgl, unsigned int sgc); | |
1082 | * Called when the FCoE Target wants to initialize an I/O that | |
1083 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
1084 | * perform necessary setup and returns 1 to indicate the device is set up | |
1085 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
1086 | * | |
68bad94e NP |
1087 | * int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1088 | * struct netdev_fcoe_hbainfo *hbainfo); | |
1089 | * Called when the FCoE Protocol stack wants information on the underlying | |
1090 | * device. This information is utilized by the FCoE protocol stack to | |
1091 | * register attributes with Fiber Channel management service as per the | |
1092 | * FC-GS Fabric Device Management Information(FDMI) specification. | |
1093 | * | |
e9bce845 YZ |
1094 | * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); |
1095 | * Called when the underlying device wants to override default World Wide | |
1096 | * Name (WWN) generation mechanism in FCoE protocol stack to pass its own | |
1097 | * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE | |
1098 | * protocol stack to use. | |
1099 | * | |
c445477d BH |
1100 | * RFS acceleration. |
1101 | * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, | |
1102 | * u16 rxq_index, u32 flow_id); | |
1103 | * Set hardware filter for RFS. rxq_index is the target queue index; | |
1104 | * flow_id is a flow ID to be passed to rps_may_expire_flow() later. | |
1105 | * Return the filter ID on success, or a negative error code. | |
fbaec0ea | 1106 | * |
8b98a70c | 1107 | * Slave management functions (for bridge, bonding, etc). |
fbaec0ea JP |
1108 | * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); |
1109 | * Called to make another netdev an underling. | |
1110 | * | |
1111 | * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); | |
1112 | * Called to release previously enslaved netdev. | |
5455c699 MM |
1113 | * |
1114 | * Feature/offload setting functions. | |
1a2a1444 DM |
1115 | * netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1116 | * netdev_features_t features); | |
1117 | * Adjusts the requested feature flags according to device-specific | |
1118 | * constraints, and returns the resulting flags. Must not modify | |
1119 | * the device state. | |
1120 | * | |
c8f44aff | 1121 | * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); |
5455c699 MM |
1122 | * Called to update device configuration to new features. Passed |
1123 | * feature set might be less than what was returned by ndo_fix_features()). | |
1124 | * Must return >0 or -errno if it changed dev->features itself. | |
1125 | * | |
edc7d573 | 1126 | * int (*ndo_fdb_add)(struct ndmsg *ndm, struct nlattr *tb[], |
1127 | * struct net_device *dev, | |
f6f6424b | 1128 | * const unsigned char *addr, u16 vid, u16 flags) |
77162022 | 1129 | * Adds an FDB entry to dev for addr. |
1690be63 VY |
1130 | * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[], |
1131 | * struct net_device *dev, | |
f6f6424b | 1132 | * const unsigned char *addr, u16 vid) |
77162022 JF |
1133 | * Deletes the FDB entry from dev coresponding to addr. |
1134 | * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb, | |
5d5eacb3 | 1135 | * struct net_device *dev, struct net_device *filter_dev, |
d297653d | 1136 | * int *idx) |
77162022 JF |
1137 | * Used to add FDB entries to dump requests. Implementers should add |
1138 | * entries to skb and update idx with the number of entries. | |
e5a55a89 | 1139 | * |
ad41faa8 ND |
1140 | * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh, |
1141 | * u16 flags) | |
e5a55a89 | 1142 | * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, |
46c264da ND |
1143 | * struct net_device *dev, u32 filter_mask, |
1144 | * int nlflags) | |
ad41faa8 ND |
1145 | * int (*ndo_bridge_dellink)(struct net_device *dev, struct nlmsghdr *nlh, |
1146 | * u16 flags); | |
4bf84c35 JP |
1147 | * |
1148 | * int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier); | |
1149 | * Called to change device carrier. Soft-devices (like dummy, team, etc) | |
1150 | * which do not represent real hardware may define this to allow their | |
1151 | * userspace components to manage their virtual carrier state. Devices | |
1152 | * that determine carrier state from physical hardware properties (eg | |
1153 | * network cables) or protocol-dependent mechanisms (eg | |
1154 | * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function. | |
66b52b0d JP |
1155 | * |
1156 | * int (*ndo_get_phys_port_id)(struct net_device *dev, | |
02637fce | 1157 | * struct netdev_phys_item_id *ppid); |
66b52b0d JP |
1158 | * Called to get ID of physical port of this device. If driver does |
1159 | * not implement this, it is assumed that the hw is not able to have | |
1160 | * multiple net devices on single physical port. | |
53cf5275 | 1161 | * |
7c46a640 AD |
1162 | * void (*ndo_udp_tunnel_add)(struct net_device *dev, |
1163 | * struct udp_tunnel_info *ti); | |
1164 | * Called by UDP tunnel to notify a driver about the UDP port and socket | |
1165 | * address family that a UDP tunnel is listnening to. It is called only | |
1166 | * when a new port starts listening. The operation is protected by the | |
1167 | * RTNL. | |
1168 | * | |
1169 | * void (*ndo_udp_tunnel_del)(struct net_device *dev, | |
1170 | * struct udp_tunnel_info *ti); | |
1171 | * Called by UDP tunnel to notify the driver about a UDP port and socket | |
1172 | * address family that the UDP tunnel is not listening to anymore. The | |
1173 | * operation is protected by the RTNL. | |
1174 | * | |
a6cc0cfa JF |
1175 | * void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1176 | * struct net_device *dev) | |
1177 | * Called by upper layer devices to accelerate switching or other | |
1178 | * station functionality into hardware. 'pdev is the lowerdev | |
1179 | * to use for the offload and 'dev' is the net device that will | |
1180 | * back the offload. Returns a pointer to the private structure | |
1181 | * the upper layer will maintain. | |
1182 | * void (*ndo_dfwd_del_station)(struct net_device *pdev, void *priv) | |
1183 | * Called by upper layer device to delete the station created | |
1184 | * by 'ndo_dfwd_add_station'. 'pdev' is the net device backing | |
1185 | * the station and priv is the structure returned by the add | |
1186 | * operation. | |
822b3b2e JF |
1187 | * int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1188 | * int queue_index, u32 maxrate); | |
1189 | * Called when a user wants to set a max-rate limitation of specific | |
1190 | * TX queue. | |
a54acb3a ND |
1191 | * int (*ndo_get_iflink)(const struct net_device *dev); |
1192 | * Called to get the iflink value of this device. | |
d746d707 | 1193 | * void (*ndo_change_proto_down)(struct net_device *dev, |
5e82b4b2 | 1194 | * bool proto_down); |
d746d707 AK |
1195 | * This function is used to pass protocol port error state information |
1196 | * to the switch driver. The switch driver can react to the proto_down | |
1197 | * by doing a phys down on the associated switch port. | |
fc4099f1 PS |
1198 | * int (*ndo_fill_metadata_dst)(struct net_device *dev, struct sk_buff *skb); |
1199 | * This function is used to get egress tunnel information for given skb. | |
1200 | * This is useful for retrieving outer tunnel header parameters while | |
1201 | * sampling packet. | |
871b642a PA |
1202 | * void (*ndo_set_rx_headroom)(struct net_device *dev, int needed_headroom); |
1203 | * This function is used to specify the headroom that the skb must | |
1204 | * consider when allocation skb during packet reception. Setting | |
1205 | * appropriate rx headroom value allows avoiding skb head copy on | |
5e82b4b2 | 1206 | * forward. Setting a negative value resets the rx headroom to the |
871b642a | 1207 | * default value. |
f4e63525 | 1208 | * int (*ndo_bpf)(struct net_device *dev, struct netdev_bpf *bpf); |
a7862b45 | 1209 | * This function is used to set or query state related to XDP on the |
f4e63525 JK |
1210 | * netdevice and manage BPF offload. See definition of |
1211 | * enum bpf_netdev_command for details. | |
42b33468 JDB |
1212 | * int (*ndo_xdp_xmit)(struct net_device *dev, int n, struct xdp_frame **xdp, |
1213 | * u32 flags); | |
735fc405 JDB |
1214 | * This function is used to submit @n XDP packets for transmit on a |
1215 | * netdevice. Returns number of frames successfully transmitted, frames | |
1216 | * that got dropped are freed/returned via xdp_return_frame(). | |
1217 | * Returns negative number, means general error invoking ndo, meaning | |
1218 | * no frames were xmit'ed and core-caller will free all frames. | |
d314774c SH |
1219 | */ |
1220 | struct net_device_ops { | |
1221 | int (*ndo_init)(struct net_device *dev); | |
1222 | void (*ndo_uninit)(struct net_device *dev); | |
1223 | int (*ndo_open)(struct net_device *dev); | |
1224 | int (*ndo_stop)(struct net_device *dev); | |
cdba756f ED |
1225 | netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
1226 | struct net_device *dev); | |
1227 | netdev_features_t (*ndo_features_check)(struct sk_buff *skb, | |
1228 | struct net_device *dev, | |
1229 | netdev_features_t features); | |
00829823 | 1230 | u16 (*ndo_select_queue)(struct net_device *dev, |
f663dd9a | 1231 | struct sk_buff *skb, |
99932d4f DB |
1232 | void *accel_priv, |
1233 | select_queue_fallback_t fallback); | |
d314774c SH |
1234 | void (*ndo_change_rx_flags)(struct net_device *dev, |
1235 | int flags); | |
d314774c | 1236 | void (*ndo_set_rx_mode)(struct net_device *dev); |
d314774c SH |
1237 | int (*ndo_set_mac_address)(struct net_device *dev, |
1238 | void *addr); | |
d314774c | 1239 | int (*ndo_validate_addr)(struct net_device *dev); |
d314774c SH |
1240 | int (*ndo_do_ioctl)(struct net_device *dev, |
1241 | struct ifreq *ifr, int cmd); | |
d314774c SH |
1242 | int (*ndo_set_config)(struct net_device *dev, |
1243 | struct ifmap *map); | |
00829823 SH |
1244 | int (*ndo_change_mtu)(struct net_device *dev, |
1245 | int new_mtu); | |
1246 | int (*ndo_neigh_setup)(struct net_device *dev, | |
1247 | struct neigh_parms *); | |
d314774c SH |
1248 | void (*ndo_tx_timeout) (struct net_device *dev); |
1249 | ||
bc1f4470 | 1250 | void (*ndo_get_stats64)(struct net_device *dev, |
1251 | struct rtnl_link_stats64 *storage); | |
3df5b3c6 | 1252 | bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id); |
2c9d85d4 NF |
1253 | int (*ndo_get_offload_stats)(int attr_id, |
1254 | const struct net_device *dev, | |
1255 | void *attr_data); | |
d314774c SH |
1256 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
1257 | ||
8e586137 | 1258 | int (*ndo_vlan_rx_add_vid)(struct net_device *dev, |
80d5c368 | 1259 | __be16 proto, u16 vid); |
8e586137 | 1260 | int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, |
80d5c368 | 1261 | __be16 proto, u16 vid); |
d314774c | 1262 | #ifdef CONFIG_NET_POLL_CONTROLLER |
d314774c | 1263 | void (*ndo_poll_controller)(struct net_device *dev); |
4247e161 | 1264 | int (*ndo_netpoll_setup)(struct net_device *dev, |
a8779ec1 | 1265 | struct netpoll_info *info); |
0e34e931 | 1266 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
d314774c | 1267 | #endif |
95c26df8 WM |
1268 | int (*ndo_set_vf_mac)(struct net_device *dev, |
1269 | int queue, u8 *mac); | |
1270 | int (*ndo_set_vf_vlan)(struct net_device *dev, | |
79aab093 MS |
1271 | int queue, u16 vlan, |
1272 | u8 qos, __be16 proto); | |
ed616689 SC |
1273 | int (*ndo_set_vf_rate)(struct net_device *dev, |
1274 | int vf, int min_tx_rate, | |
1275 | int max_tx_rate); | |
5f8444a3 GR |
1276 | int (*ndo_set_vf_spoofchk)(struct net_device *dev, |
1277 | int vf, bool setting); | |
dd461d6a HS |
1278 | int (*ndo_set_vf_trust)(struct net_device *dev, |
1279 | int vf, bool setting); | |
95c26df8 WM |
1280 | int (*ndo_get_vf_config)(struct net_device *dev, |
1281 | int vf, | |
1282 | struct ifla_vf_info *ivf); | |
1d8faf48 RE |
1283 | int (*ndo_set_vf_link_state)(struct net_device *dev, |
1284 | int vf, int link_state); | |
3b766cd8 EBE |
1285 | int (*ndo_get_vf_stats)(struct net_device *dev, |
1286 | int vf, | |
1287 | struct ifla_vf_stats | |
1288 | *vf_stats); | |
57b61080 SF |
1289 | int (*ndo_set_vf_port)(struct net_device *dev, |
1290 | int vf, | |
1291 | struct nlattr *port[]); | |
1292 | int (*ndo_get_vf_port)(struct net_device *dev, | |
1293 | int vf, struct sk_buff *skb); | |
cc8e27cc EC |
1294 | int (*ndo_set_vf_guid)(struct net_device *dev, |
1295 | int vf, u64 guid, | |
1296 | int guid_type); | |
01a3d796 VZ |
1297 | int (*ndo_set_vf_rss_query_en)( |
1298 | struct net_device *dev, | |
1299 | int vf, bool setting); | |
16e5cc64 | 1300 | int (*ndo_setup_tc)(struct net_device *dev, |
2572ac53 | 1301 | enum tc_setup_type type, |
de4784ca | 1302 | void *type_data); |
d11ead75 | 1303 | #if IS_ENABLED(CONFIG_FCOE) |
cb454399 YZ |
1304 | int (*ndo_fcoe_enable)(struct net_device *dev); |
1305 | int (*ndo_fcoe_disable)(struct net_device *dev); | |
4d288d57 YZ |
1306 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
1307 | u16 xid, | |
1308 | struct scatterlist *sgl, | |
1309 | unsigned int sgc); | |
1310 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
1311 | u16 xid); | |
6247e086 YZ |
1312 | int (*ndo_fcoe_ddp_target)(struct net_device *dev, |
1313 | u16 xid, | |
1314 | struct scatterlist *sgl, | |
1315 | unsigned int sgc); | |
68bad94e NP |
1316 | int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1317 | struct netdev_fcoe_hbainfo *hbainfo); | |
3c9c36bc BPG |
1318 | #endif |
1319 | ||
d11ead75 | 1320 | #if IS_ENABLED(CONFIG_LIBFCOE) |
df5c7945 YZ |
1321 | #define NETDEV_FCOE_WWNN 0 |
1322 | #define NETDEV_FCOE_WWPN 1 | |
1323 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, | |
1324 | u64 *wwn, int type); | |
4d288d57 | 1325 | #endif |
3c9c36bc | 1326 | |
c445477d BH |
1327 | #ifdef CONFIG_RFS_ACCEL |
1328 | int (*ndo_rx_flow_steer)(struct net_device *dev, | |
1329 | const struct sk_buff *skb, | |
1330 | u16 rxq_index, | |
1331 | u32 flow_id); | |
1332 | #endif | |
fbaec0ea | 1333 | int (*ndo_add_slave)(struct net_device *dev, |
33eaf2a6 DA |
1334 | struct net_device *slave_dev, |
1335 | struct netlink_ext_ack *extack); | |
fbaec0ea JP |
1336 | int (*ndo_del_slave)(struct net_device *dev, |
1337 | struct net_device *slave_dev); | |
c8f44aff MM |
1338 | netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1339 | netdev_features_t features); | |
5455c699 | 1340 | int (*ndo_set_features)(struct net_device *dev, |
c8f44aff | 1341 | netdev_features_t features); |
503eebc2 JP |
1342 | int (*ndo_neigh_construct)(struct net_device *dev, |
1343 | struct neighbour *n); | |
1344 | void (*ndo_neigh_destroy)(struct net_device *dev, | |
1345 | struct neighbour *n); | |
77162022 JF |
1346 | |
1347 | int (*ndo_fdb_add)(struct ndmsg *ndm, | |
edc7d573 | 1348 | struct nlattr *tb[], |
77162022 | 1349 | struct net_device *dev, |
6b6e2725 | 1350 | const unsigned char *addr, |
f6f6424b | 1351 | u16 vid, |
77162022 JF |
1352 | u16 flags); |
1353 | int (*ndo_fdb_del)(struct ndmsg *ndm, | |
1690be63 | 1354 | struct nlattr *tb[], |
77162022 | 1355 | struct net_device *dev, |
f6f6424b JP |
1356 | const unsigned char *addr, |
1357 | u16 vid); | |
77162022 JF |
1358 | int (*ndo_fdb_dump)(struct sk_buff *skb, |
1359 | struct netlink_callback *cb, | |
1360 | struct net_device *dev, | |
5d5eacb3 | 1361 | struct net_device *filter_dev, |
d297653d | 1362 | int *idx); |
e5a55a89 JF |
1363 | |
1364 | int (*ndo_bridge_setlink)(struct net_device *dev, | |
add511b3 RP |
1365 | struct nlmsghdr *nlh, |
1366 | u16 flags); | |
e5a55a89 JF |
1367 | int (*ndo_bridge_getlink)(struct sk_buff *skb, |
1368 | u32 pid, u32 seq, | |
6cbdceeb | 1369 | struct net_device *dev, |
46c264da ND |
1370 | u32 filter_mask, |
1371 | int nlflags); | |
407af329 | 1372 | int (*ndo_bridge_dellink)(struct net_device *dev, |
add511b3 RP |
1373 | struct nlmsghdr *nlh, |
1374 | u16 flags); | |
4bf84c35 JP |
1375 | int (*ndo_change_carrier)(struct net_device *dev, |
1376 | bool new_carrier); | |
66b52b0d | 1377 | int (*ndo_get_phys_port_id)(struct net_device *dev, |
02637fce | 1378 | struct netdev_phys_item_id *ppid); |
db24a904 DA |
1379 | int (*ndo_get_phys_port_name)(struct net_device *dev, |
1380 | char *name, size_t len); | |
7c46a640 AD |
1381 | void (*ndo_udp_tunnel_add)(struct net_device *dev, |
1382 | struct udp_tunnel_info *ti); | |
1383 | void (*ndo_udp_tunnel_del)(struct net_device *dev, | |
1384 | struct udp_tunnel_info *ti); | |
a6cc0cfa JF |
1385 | void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1386 | struct net_device *dev); | |
1387 | void (*ndo_dfwd_del_station)(struct net_device *pdev, | |
1388 | void *priv); | |
1389 | ||
25175ba5 | 1390 | int (*ndo_get_lock_subclass)(struct net_device *dev); |
822b3b2e JF |
1391 | int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1392 | int queue_index, | |
1393 | u32 maxrate); | |
a54acb3a | 1394 | int (*ndo_get_iflink)(const struct net_device *dev); |
d746d707 AK |
1395 | int (*ndo_change_proto_down)(struct net_device *dev, |
1396 | bool proto_down); | |
fc4099f1 PS |
1397 | int (*ndo_fill_metadata_dst)(struct net_device *dev, |
1398 | struct sk_buff *skb); | |
871b642a PA |
1399 | void (*ndo_set_rx_headroom)(struct net_device *dev, |
1400 | int needed_headroom); | |
f4e63525 JK |
1401 | int (*ndo_bpf)(struct net_device *dev, |
1402 | struct netdev_bpf *bpf); | |
735fc405 | 1403 | int (*ndo_xdp_xmit)(struct net_device *dev, int n, |
42b33468 JDB |
1404 | struct xdp_frame **xdp, |
1405 | u32 flags); | |
e3760c7e MK |
1406 | int (*ndo_xsk_async_xmit)(struct net_device *dev, |
1407 | u32 queue_id); | |
d314774c SH |
1408 | }; |
1409 | ||
7aa98047 LR |
1410 | /** |
1411 | * enum net_device_priv_flags - &struct net_device priv_flags | |
1412 | * | |
1413 | * These are the &struct net_device, they are only set internally | |
1414 | * by drivers and used in the kernel. These flags are invisible to | |
5e82b4b2 | 1415 | * userspace; this means that the order of these flags can change |
7aa98047 LR |
1416 | * during any kernel release. |
1417 | * | |
1418 | * You should have a pretty good reason to be extending these flags. | |
1419 | * | |
1420 | * @IFF_802_1Q_VLAN: 802.1Q VLAN device | |
1421 | * @IFF_EBRIDGE: Ethernet bridging device | |
7aa98047 | 1422 | * @IFF_BONDING: bonding master or slave |
7aa98047 | 1423 | * @IFF_ISATAP: ISATAP interface (RFC4214) |
7aa98047 LR |
1424 | * @IFF_WAN_HDLC: WAN HDLC device |
1425 | * @IFF_XMIT_DST_RELEASE: dev_hard_start_xmit() is allowed to | |
1426 | * release skb->dst | |
1427 | * @IFF_DONT_BRIDGE: disallow bridging this ether dev | |
1428 | * @IFF_DISABLE_NETPOLL: disable netpoll at run-time | |
1429 | * @IFF_MACVLAN_PORT: device used as macvlan port | |
1430 | * @IFF_BRIDGE_PORT: device used as bridge port | |
1431 | * @IFF_OVS_DATAPATH: device used as Open vSwitch datapath port | |
1432 | * @IFF_TX_SKB_SHARING: The interface supports sharing skbs on transmit | |
1433 | * @IFF_UNICAST_FLT: Supports unicast filtering | |
1434 | * @IFF_TEAM_PORT: device used as team port | |
1435 | * @IFF_SUPP_NOFCS: device supports sending custom FCS | |
1436 | * @IFF_LIVE_ADDR_CHANGE: device supports hardware address | |
1437 | * change when it's running | |
1438 | * @IFF_MACVLAN: Macvlan device | |
6d0e24cd LB |
1439 | * @IFF_XMIT_DST_RELEASE_PERM: IFF_XMIT_DST_RELEASE not taking into account |
1440 | * underlying stacked devices | |
007979ea | 1441 | * @IFF_L3MDEV_MASTER: device is an L3 master device |
fa8187c9 | 1442 | * @IFF_NO_QUEUE: device can run without qdisc attached |
35d4e172 | 1443 | * @IFF_OPENVSWITCH: device is a Open vSwitch master |
fee6d4c7 | 1444 | * @IFF_L3MDEV_SLAVE: device is enslaved to an L3 master device |
c981e421 | 1445 | * @IFF_TEAM: device is a team device |
d4ab4286 | 1446 | * @IFF_RXFH_CONFIGURED: device has had Rx Flow indirection table configured |
871b642a PA |
1447 | * @IFF_PHONY_HEADROOM: the headroom value is controlled by an external |
1448 | * entity (i.e. the master device for bridged veth) | |
3c175784 | 1449 | * @IFF_MACSEC: device is a MACsec device |
f5426250 | 1450 | * @IFF_NO_RX_HANDLER: device doesn't support the rx_handler hook |
30c8bd5a SS |
1451 | * @IFF_FAILOVER: device is a failover master device |
1452 | * @IFF_FAILOVER_SLAVE: device is lower dev of a failover master device | |
7aa98047 LR |
1453 | */ |
1454 | enum netdev_priv_flags { | |
1455 | IFF_802_1Q_VLAN = 1<<0, | |
1456 | IFF_EBRIDGE = 1<<1, | |
0dc1549b JP |
1457 | IFF_BONDING = 1<<2, |
1458 | IFF_ISATAP = 1<<3, | |
1459 | IFF_WAN_HDLC = 1<<4, | |
1460 | IFF_XMIT_DST_RELEASE = 1<<5, | |
1461 | IFF_DONT_BRIDGE = 1<<6, | |
1462 | IFF_DISABLE_NETPOLL = 1<<7, | |
1463 | IFF_MACVLAN_PORT = 1<<8, | |
1464 | IFF_BRIDGE_PORT = 1<<9, | |
1465 | IFF_OVS_DATAPATH = 1<<10, | |
1466 | IFF_TX_SKB_SHARING = 1<<11, | |
1467 | IFF_UNICAST_FLT = 1<<12, | |
1468 | IFF_TEAM_PORT = 1<<13, | |
1469 | IFF_SUPP_NOFCS = 1<<14, | |
1470 | IFF_LIVE_ADDR_CHANGE = 1<<15, | |
1471 | IFF_MACVLAN = 1<<16, | |
1472 | IFF_XMIT_DST_RELEASE_PERM = 1<<17, | |
1ec54cb4 PA |
1473 | IFF_L3MDEV_MASTER = 1<<18, |
1474 | IFF_NO_QUEUE = 1<<19, | |
1475 | IFF_OPENVSWITCH = 1<<20, | |
1476 | IFF_L3MDEV_SLAVE = 1<<21, | |
1477 | IFF_TEAM = 1<<22, | |
1478 | IFF_RXFH_CONFIGURED = 1<<23, | |
1479 | IFF_PHONY_HEADROOM = 1<<24, | |
1480 | IFF_MACSEC = 1<<25, | |
f5426250 | 1481 | IFF_NO_RX_HANDLER = 1<<26, |
30c8bd5a SS |
1482 | IFF_FAILOVER = 1<<27, |
1483 | IFF_FAILOVER_SLAVE = 1<<28, | |
7aa98047 LR |
1484 | }; |
1485 | ||
1486 | #define IFF_802_1Q_VLAN IFF_802_1Q_VLAN | |
1487 | #define IFF_EBRIDGE IFF_EBRIDGE | |
7aa98047 | 1488 | #define IFF_BONDING IFF_BONDING |
7aa98047 | 1489 | #define IFF_ISATAP IFF_ISATAP |
7aa98047 LR |
1490 | #define IFF_WAN_HDLC IFF_WAN_HDLC |
1491 | #define IFF_XMIT_DST_RELEASE IFF_XMIT_DST_RELEASE | |
1492 | #define IFF_DONT_BRIDGE IFF_DONT_BRIDGE | |
1493 | #define IFF_DISABLE_NETPOLL IFF_DISABLE_NETPOLL | |
1494 | #define IFF_MACVLAN_PORT IFF_MACVLAN_PORT | |
1495 | #define IFF_BRIDGE_PORT IFF_BRIDGE_PORT | |
1496 | #define IFF_OVS_DATAPATH IFF_OVS_DATAPATH | |
1497 | #define IFF_TX_SKB_SHARING IFF_TX_SKB_SHARING | |
1498 | #define IFF_UNICAST_FLT IFF_UNICAST_FLT | |
1499 | #define IFF_TEAM_PORT IFF_TEAM_PORT | |
1500 | #define IFF_SUPP_NOFCS IFF_SUPP_NOFCS | |
1501 | #define IFF_LIVE_ADDR_CHANGE IFF_LIVE_ADDR_CHANGE | |
1502 | #define IFF_MACVLAN IFF_MACVLAN | |
02875878 | 1503 | #define IFF_XMIT_DST_RELEASE_PERM IFF_XMIT_DST_RELEASE_PERM |
007979ea | 1504 | #define IFF_L3MDEV_MASTER IFF_L3MDEV_MASTER |
fa8187c9 | 1505 | #define IFF_NO_QUEUE IFF_NO_QUEUE |
35d4e172 | 1506 | #define IFF_OPENVSWITCH IFF_OPENVSWITCH |
8f25348b | 1507 | #define IFF_L3MDEV_SLAVE IFF_L3MDEV_SLAVE |
c981e421 | 1508 | #define IFF_TEAM IFF_TEAM |
d4ab4286 | 1509 | #define IFF_RXFH_CONFIGURED IFF_RXFH_CONFIGURED |
3c175784 | 1510 | #define IFF_MACSEC IFF_MACSEC |
f5426250 | 1511 | #define IFF_NO_RX_HANDLER IFF_NO_RX_HANDLER |
30c8bd5a SS |
1512 | #define IFF_FAILOVER IFF_FAILOVER |
1513 | #define IFF_FAILOVER_SLAVE IFF_FAILOVER_SLAVE | |
7aa98047 | 1514 | |
536721b1 KK |
1515 | /** |
1516 | * struct net_device - The DEVICE structure. | |
d651983d MCC |
1517 | * |
1518 | * Actually, this whole structure is a big mistake. It mixes I/O | |
1519 | * data with strictly "high-level" data, and it has to know about | |
1520 | * almost every data structure used in the INET module. | |
536721b1 KK |
1521 | * |
1522 | * @name: This is the first field of the "visible" part of this structure | |
1523 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
d651983d | 1524 | * of the interface. |
536721b1 KK |
1525 | * |
1526 | * @name_hlist: Device name hash chain, please keep it close to name[] | |
1527 | * @ifalias: SNMP alias | |
1528 | * @mem_end: Shared memory end | |
1529 | * @mem_start: Shared memory start | |
1530 | * @base_addr: Device I/O address | |
1531 | * @irq: Device IRQ number | |
1532 | * | |
1533 | * @state: Generic network queuing layer state, see netdev_state_t | |
1534 | * @dev_list: The global list of network devices | |
5e82b4b2 BH |
1535 | * @napi_list: List entry used for polling NAPI devices |
1536 | * @unreg_list: List entry when we are unregistering the | |
1537 | * device; see the function unregister_netdev | |
1538 | * @close_list: List entry used when we are closing the device | |
62d885fe BP |
1539 | * @ptype_all: Device-specific packet handlers for all protocols |
1540 | * @ptype_specific: Device-specific, protocol-specific packet handlers | |
536721b1 KK |
1541 | * |
1542 | * @adj_list: Directly linked devices, like slaves for bonding | |
536721b1 KK |
1543 | * @features: Currently active device features |
1544 | * @hw_features: User-changeable features | |
1545 | * | |
1546 | * @wanted_features: User-requested features | |
1547 | * @vlan_features: Mask of features inheritable by VLAN devices | |
1548 | * | |
1549 | * @hw_enc_features: Mask of features inherited by encapsulating devices | |
1550 | * This field indicates what encapsulation | |
1551 | * offloads the hardware is capable of doing, | |
1552 | * and drivers will need to set them appropriately. | |
1553 | * | |
1554 | * @mpls_features: Mask of features inheritable by MPLS | |
1555 | * | |
1556 | * @ifindex: interface index | |
5e82b4b2 | 1557 | * @group: The group the device belongs to |
536721b1 KK |
1558 | * |
1559 | * @stats: Statistics struct, which was left as a legacy, use | |
1560 | * rtnl_link_stats64 instead | |
1561 | * | |
1562 | * @rx_dropped: Dropped packets by core network, | |
1563 | * do not use this in drivers | |
1564 | * @tx_dropped: Dropped packets by core network, | |
1565 | * do not use this in drivers | |
6e7333d3 JW |
1566 | * @rx_nohandler: nohandler dropped packets by core network on |
1567 | * inactive devices, do not use this in drivers | |
9e55e5d3 FF |
1568 | * @carrier_up_count: Number of times the carrier has been up |
1569 | * @carrier_down_count: Number of times the carrier has been down | |
536721b1 | 1570 | * |
536721b1 KK |
1571 | * @wireless_handlers: List of functions to handle Wireless Extensions, |
1572 | * instead of ioctl, | |
1573 | * see <net/iw_handler.h> for details. | |
1574 | * @wireless_data: Instance data managed by the core of wireless extensions | |
1575 | * | |
1576 | * @netdev_ops: Includes several pointers to callbacks, | |
1577 | * if one wants to override the ndo_*() functions | |
1578 | * @ethtool_ops: Management operations | |
f997c55c AA |
1579 | * @ndisc_ops: Includes callbacks for different IPv6 neighbour |
1580 | * discovery handling. Necessary for e.g. 6LoWPAN. | |
d476059e | 1581 | * @header_ops: Includes callbacks for creating,parsing,caching,etc |
536721b1 KK |
1582 | * of Layer 2 headers. |
1583 | * | |
1584 | * @flags: Interface flags (a la BSD) | |
1585 | * @priv_flags: Like 'flags' but invisible to userspace, | |
1586 | * see if.h for the definitions | |
1587 | * @gflags: Global flags ( kept as legacy ) | |
1588 | * @padded: How much padding added by alloc_netdev() | |
1589 | * @operstate: RFC2863 operstate | |
1590 | * @link_mode: Mapping policy to operstate | |
1591 | * @if_port: Selectable AUI, TP, ... | |
1592 | * @dma: DMA channel | |
1593 | * @mtu: Interface MTU value | |
61e84623 JW |
1594 | * @min_mtu: Interface Minimum MTU value |
1595 | * @max_mtu: Interface Maximum MTU value | |
536721b1 | 1596 | * @type: Interface hardware type |
2793a23a | 1597 | * @hard_header_len: Maximum hardware header length. |
217e6fa2 | 1598 | * @min_header_len: Minimum hardware header length |
536721b1 KK |
1599 | * |
1600 | * @needed_headroom: Extra headroom the hardware may need, but not in all | |
1601 | * cases can this be guaranteed | |
1602 | * @needed_tailroom: Extra tailroom the hardware may need, but not in all | |
1603 | * cases can this be guaranteed. Some cases also use | |
1604 | * LL_MAX_HEADER instead to allocate the skb | |
1605 | * | |
1606 | * interface address info: | |
1607 | * | |
1608 | * @perm_addr: Permanent hw address | |
1609 | * @addr_assign_type: Hw address assignment type | |
1610 | * @addr_len: Hardware address length | |
8626a0c8 | 1611 | * @neigh_priv_len: Used in neigh_alloc() |
536721b1 KK |
1612 | * @dev_id: Used to differentiate devices that share |
1613 | * the same link layer address | |
1614 | * @dev_port: Used to differentiate devices that share | |
1615 | * the same function | |
1616 | * @addr_list_lock: XXX: need comments on this one | |
5e82b4b2 | 1617 | * @uc_promisc: Counter that indicates promiscuous mode |
536721b1 KK |
1618 | * has been enabled due to the need to listen to |
1619 | * additional unicast addresses in a device that | |
1620 | * does not implement ndo_set_rx_mode() | |
14ffbbb8 TG |
1621 | * @uc: unicast mac addresses |
1622 | * @mc: multicast mac addresses | |
1623 | * @dev_addrs: list of device hw addresses | |
1624 | * @queues_kset: Group of all Kobjects in the Tx and RX queues | |
5e82b4b2 BH |
1625 | * @promiscuity: Number of times the NIC is told to work in |
1626 | * promiscuous mode; if it becomes 0 the NIC will | |
1627 | * exit promiscuous mode | |
536721b1 KK |
1628 | * @allmulti: Counter, enables or disables allmulticast mode |
1629 | * | |
1630 | * @vlan_info: VLAN info | |
1631 | * @dsa_ptr: dsa specific data | |
1632 | * @tipc_ptr: TIPC specific data | |
1633 | * @atalk_ptr: AppleTalk link | |
1634 | * @ip_ptr: IPv4 specific data | |
1635 | * @dn_ptr: DECnet specific data | |
1636 | * @ip6_ptr: IPv6 specific data | |
1637 | * @ax25_ptr: AX.25 specific data | |
1638 | * @ieee80211_ptr: IEEE 802.11 specific data, assign before registering | |
1639 | * | |
536721b1 KK |
1640 | * @dev_addr: Hw address (before bcast, |
1641 | * because most packets are unicast) | |
1642 | * | |
1643 | * @_rx: Array of RX queues | |
1644 | * @num_rx_queues: Number of RX queues | |
1645 | * allocated at register_netdev() time | |
1646 | * @real_num_rx_queues: Number of RX queues currently active in device | |
1647 | * | |
1648 | * @rx_handler: handler for received packets | |
1649 | * @rx_handler_data: XXX: need comments on this one | |
46209401 JP |
1650 | * @miniq_ingress: ingress/clsact qdisc specific data for |
1651 | * ingress processing | |
536721b1 KK |
1652 | * @ingress_queue: XXX: need comments on this one |
1653 | * @broadcast: hw bcast address | |
1654 | * | |
14ffbbb8 TG |
1655 | * @rx_cpu_rmap: CPU reverse-mapping for RX completion interrupts, |
1656 | * indexed by RX queue number. Assigned by driver. | |
1657 | * This must only be set if the ndo_rx_flow_steer | |
1658 | * operation is defined | |
1659 | * @index_hlist: Device index hash chain | |
1660 | * | |
536721b1 KK |
1661 | * @_tx: Array of TX queues |
1662 | * @num_tx_queues: Number of TX queues allocated at alloc_netdev_mq() time | |
1663 | * @real_num_tx_queues: Number of TX queues currently active in device | |
1664 | * @qdisc: Root qdisc from userspace point of view | |
1665 | * @tx_queue_len: Max frames per queue allowed | |
1666 | * @tx_global_lock: XXX: need comments on this one | |
1667 | * | |
1668 | * @xps_maps: XXX: need comments on this one | |
46209401 JP |
1669 | * @miniq_egress: clsact qdisc specific data for |
1670 | * egress processing | |
536721b1 | 1671 | * @watchdog_timeo: Represents the timeout that is used by |
5e82b4b2 | 1672 | * the watchdog (see dev_watchdog()) |
536721b1 KK |
1673 | * @watchdog_timer: List of timers |
1674 | * | |
1675 | * @pcpu_refcnt: Number of references to this device | |
1676 | * @todo_list: Delayed register/unregister | |
536721b1 KK |
1677 | * @link_watch_list: XXX: need comments on this one |
1678 | * | |
1679 | * @reg_state: Register/unregister state machine | |
1680 | * @dismantle: Device is going to be freed | |
1681 | * @rtnl_link_state: This enum represents the phases of creating | |
1682 | * a new link | |
1683 | * | |
cf124db5 DM |
1684 | * @needs_free_netdev: Should unregister perform free_netdev? |
1685 | * @priv_destructor: Called from unregister | |
536721b1 KK |
1686 | * @npinfo: XXX: need comments on this one |
1687 | * @nd_net: Network namespace this network device is inside | |
1688 | * | |
1689 | * @ml_priv: Mid-layer private | |
1690 | * @lstats: Loopback statistics | |
1691 | * @tstats: Tunnel statistics | |
1692 | * @dstats: Dummy statistics | |
1693 | * @vstats: Virtual ethernet statistics | |
1694 | * | |
1695 | * @garp_port: GARP | |
1696 | * @mrp_port: MRP | |
1697 | * | |
1698 | * @dev: Class/net/name entry | |
1699 | * @sysfs_groups: Space for optional device, statistics and wireless | |
1700 | * sysfs groups | |
1701 | * | |
1702 | * @sysfs_rx_queue_group: Space for optional per-rx queue attributes | |
1703 | * @rtnl_link_ops: Rtnl_link_ops | |
1704 | * | |
1705 | * @gso_max_size: Maximum size of generic segmentation offload | |
1706 | * @gso_max_segs: Maximum number of segments that can be passed to the | |
1707 | * NIC for GSO | |
1708 | * | |
1709 | * @dcbnl_ops: Data Center Bridging netlink ops | |
1710 | * @num_tc: Number of traffic classes in the net device | |
1711 | * @tc_to_txq: XXX: need comments on this one | |
920c1cd3 | 1712 | * @prio_tc_map: XXX: need comments on this one |
536721b1 KK |
1713 | * |
1714 | * @fcoe_ddp_xid: Max exchange id for FCoE LRO by ddp | |
1715 | * | |
1716 | * @priomap: XXX: need comments on this one | |
1717 | * @phydev: Physical device may attach itself | |
1718 | * for hardware timestamping | |
e679c9c1 | 1719 | * @sfp_bus: attached &struct sfp_bus structure. |
536721b1 | 1720 | * |
123b3652 ED |
1721 | * @qdisc_tx_busylock: lockdep class annotating Qdisc->busylock spinlock |
1722 | * @qdisc_running_key: lockdep class annotating Qdisc->running seqcount | |
536721b1 | 1723 | * |
d746d707 AK |
1724 | * @proto_down: protocol port state information can be sent to the |
1725 | * switch driver and used to set the phys state of the | |
1726 | * switch port. | |
1727 | * | |
1da177e4 LT |
1728 | * FIXME: cleanup struct net_device such that network protocol info |
1729 | * moves out. | |
1730 | */ | |
1731 | ||
d94d9fee | 1732 | struct net_device { |
1da177e4 | 1733 | char name[IFNAMSIZ]; |
9356b8fc | 1734 | struct hlist_node name_hlist; |
6c557001 | 1735 | struct dev_ifalias __rcu *ifalias; |
1da177e4 LT |
1736 | /* |
1737 | * I/O specific fields | |
1738 | * FIXME: Merge these and struct ifmap into one | |
1739 | */ | |
536721b1 KK |
1740 | unsigned long mem_end; |
1741 | unsigned long mem_start; | |
1742 | unsigned long base_addr; | |
1743 | int irq; | |
1da177e4 LT |
1744 | |
1745 | /* | |
536721b1 KK |
1746 | * Some hardware also needs these fields (state,dev_list, |
1747 | * napi_list,unreg_list,close_list) but they are not | |
1da177e4 LT |
1748 | * part of the usual set specified in Space.c. |
1749 | */ | |
1750 | ||
1da177e4 LT |
1751 | unsigned long state; |
1752 | ||
7562f876 | 1753 | struct list_head dev_list; |
bea3348e | 1754 | struct list_head napi_list; |
44a0873d | 1755 | struct list_head unreg_list; |
5cde2829 | 1756 | struct list_head close_list; |
7866a621 SN |
1757 | struct list_head ptype_all; |
1758 | struct list_head ptype_specific; | |
2f268f12 | 1759 | |
2f268f12 VF |
1760 | struct { |
1761 | struct list_head upper; | |
1762 | struct list_head lower; | |
1763 | } adj_list; | |
1764 | ||
c8f44aff | 1765 | netdev_features_t features; |
c8f44aff | 1766 | netdev_features_t hw_features; |
c8f44aff | 1767 | netdev_features_t wanted_features; |
c8f44aff | 1768 | netdev_features_t vlan_features; |
6a674e9c | 1769 | netdev_features_t hw_enc_features; |
0d89d203 | 1770 | netdev_features_t mpls_features; |
802ab55a | 1771 | netdev_features_t gso_partial_features; |
04ed3e74 | 1772 | |
1da177e4 | 1773 | int ifindex; |
7a66bbc9 | 1774 | int group; |
1da177e4 | 1775 | |
c45d286e | 1776 | struct net_device_stats stats; |
015f0688 | 1777 | |
015f0688 ED |
1778 | atomic_long_t rx_dropped; |
1779 | atomic_long_t tx_dropped; | |
6e7333d3 | 1780 | atomic_long_t rx_nohandler; |
1da177e4 | 1781 | |
b2d3bcfa DD |
1782 | /* Stats to monitor link on/off, flapping */ |
1783 | atomic_t carrier_up_count; | |
1784 | atomic_t carrier_down_count; | |
1785 | ||
b86e0280 | 1786 | #ifdef CONFIG_WIRELESS_EXT |
5e82b4b2 BH |
1787 | const struct iw_handler_def *wireless_handlers; |
1788 | struct iw_public_data *wireless_data; | |
b86e0280 | 1789 | #endif |
d314774c | 1790 | const struct net_device_ops *netdev_ops; |
76fd8593 | 1791 | const struct ethtool_ops *ethtool_ops; |
4170604f | 1792 | #ifdef CONFIG_NET_SWITCHDEV |
9d47c0a2 | 1793 | const struct switchdev_ops *switchdev_ops; |
4170604f | 1794 | #endif |
1b69c6d0 DA |
1795 | #ifdef CONFIG_NET_L3_MASTER_DEV |
1796 | const struct l3mdev_ops *l3mdev_ops; | |
1797 | #endif | |
f997c55c AA |
1798 | #if IS_ENABLED(CONFIG_IPV6) |
1799 | const struct ndisc_ops *ndisc_ops; | |
1800 | #endif | |
1da177e4 | 1801 | |
9cb0d21d | 1802 | #ifdef CONFIG_XFRM_OFFLOAD |
d77e38e6 SK |
1803 | const struct xfrmdev_ops *xfrmdev_ops; |
1804 | #endif | |
1805 | ||
a5c37c63 IL |
1806 | #if IS_ENABLED(CONFIG_TLS_DEVICE) |
1807 | const struct tlsdev_ops *tlsdev_ops; | |
1808 | #endif | |
1809 | ||
3b04ddde SH |
1810 | const struct header_ops *header_ops; |
1811 | ||
536721b1 KK |
1812 | unsigned int flags; |
1813 | unsigned int priv_flags; | |
1814 | ||
1da177e4 | 1815 | unsigned short gflags; |
536721b1 | 1816 | unsigned short padded; |
1da177e4 | 1817 | |
536721b1 KK |
1818 | unsigned char operstate; |
1819 | unsigned char link_mode; | |
b00055aa | 1820 | |
536721b1 KK |
1821 | unsigned char if_port; |
1822 | unsigned char dma; | |
bdc220da | 1823 | |
536721b1 | 1824 | unsigned int mtu; |
61e84623 JW |
1825 | unsigned int min_mtu; |
1826 | unsigned int max_mtu; | |
536721b1 KK |
1827 | unsigned short type; |
1828 | unsigned short hard_header_len; | |
d92be7a4 | 1829 | unsigned char min_header_len; |
1da177e4 | 1830 | |
f5184d26 JB |
1831 | unsigned short needed_headroom; |
1832 | unsigned short needed_tailroom; | |
1833 | ||
1da177e4 | 1834 | /* Interface address info. */ |
536721b1 KK |
1835 | unsigned char perm_addr[MAX_ADDR_LEN]; |
1836 | unsigned char addr_assign_type; | |
1837 | unsigned char addr_len; | |
a0a9663d | 1838 | unsigned short neigh_priv_len; |
536721b1 KK |
1839 | unsigned short dev_id; |
1840 | unsigned short dev_port; | |
ccffad25 | 1841 | spinlock_t addr_list_lock; |
14ffbbb8 TG |
1842 | unsigned char name_assign_type; |
1843 | bool uc_promisc; | |
536721b1 KK |
1844 | struct netdev_hw_addr_list uc; |
1845 | struct netdev_hw_addr_list mc; | |
1846 | struct netdev_hw_addr_list dev_addrs; | |
1847 | ||
4c3d5e7b ED |
1848 | #ifdef CONFIG_SYSFS |
1849 | struct kset *queues_kset; | |
1850 | #endif | |
9d45abe1 WC |
1851 | unsigned int promiscuity; |
1852 | unsigned int allmulti; | |
1da177e4 | 1853 | |
1da177e4 | 1854 | |
5e82b4b2 | 1855 | /* Protocol-specific pointers */ |
65ac6a5f | 1856 | |
d11ead75 | 1857 | #if IS_ENABLED(CONFIG_VLAN_8021Q) |
536721b1 | 1858 | struct vlan_info __rcu *vlan_info; |
65ac6a5f | 1859 | #endif |
34a430d7 | 1860 | #if IS_ENABLED(CONFIG_NET_DSA) |
2f657a60 | 1861 | struct dsa_port *dsa_ptr; |
37cb0620 YX |
1862 | #endif |
1863 | #if IS_ENABLED(CONFIG_TIPC) | |
536721b1 | 1864 | struct tipc_bearer __rcu *tipc_ptr; |
91da11f8 | 1865 | #endif |
89e58148 | 1866 | #if IS_ENABLED(CONFIG_IRDA) || IS_ENABLED(CONFIG_ATALK) |
536721b1 | 1867 | void *atalk_ptr; |
89e58148 | 1868 | #endif |
536721b1 | 1869 | struct in_device __rcu *ip_ptr; |
330c7272 | 1870 | #if IS_ENABLED(CONFIG_DECNET) |
536721b1 | 1871 | struct dn_dev __rcu *dn_ptr; |
330c7272 | 1872 | #endif |
536721b1 | 1873 | struct inet6_dev __rcu *ip6_ptr; |
19ff13f2 | 1874 | #if IS_ENABLED(CONFIG_AX25) |
536721b1 | 1875 | void *ax25_ptr; |
19ff13f2 | 1876 | #endif |
536721b1 | 1877 | struct wireless_dev *ieee80211_ptr; |
98a18b6f | 1878 | struct wpan_dev *ieee802154_ptr; |
03c57747 RS |
1879 | #if IS_ENABLED(CONFIG_MPLS_ROUTING) |
1880 | struct mpls_dev __rcu *mpls_ptr; | |
1881 | #endif | |
1da177e4 | 1882 | |
9356b8fc | 1883 | /* |
cd13539b | 1884 | * Cache lines mostly used on receive path (including eth_type_trans()) |
9356b8fc | 1885 | */ |
9356b8fc | 1886 | /* Interface address info used in eth_type_trans() */ |
536721b1 | 1887 | unsigned char *dev_addr; |
f001fde5 | 1888 | |
0a9627f2 | 1889 | struct netdev_rx_queue *_rx; |
0a9627f2 | 1890 | unsigned int num_rx_queues; |
62fe0b40 | 1891 | unsigned int real_num_rx_queues; |
0a9627f2 | 1892 | |
7acedaf5 | 1893 | struct bpf_prog __rcu *xdp_prog; |
3b47d303 | 1894 | unsigned long gro_flush_timeout; |
61391cde | 1895 | rx_handler_func_t __rcu *rx_handler; |
1896 | void __rcu *rx_handler_data; | |
e8a0464c | 1897 | |
4cda01e8 | 1898 | #ifdef CONFIG_NET_CLS_ACT |
46209401 | 1899 | struct mini_Qdisc __rcu *miniq_ingress; |
d2788d34 | 1900 | #endif |
24824a09 | 1901 | struct netdev_queue __rcu *ingress_queue; |
e687ad60 | 1902 | #ifdef CONFIG_NETFILTER_INGRESS |
960632ec | 1903 | struct nf_hook_entries __rcu *nf_hooks_ingress; |
e687ad60 | 1904 | #endif |
d2788d34 | 1905 | |
536721b1 | 1906 | unsigned char broadcast[MAX_ADDR_LEN]; |
14ffbbb8 TG |
1907 | #ifdef CONFIG_RFS_ACCEL |
1908 | struct cpu_rmap *rx_cpu_rmap; | |
1909 | #endif | |
1910 | struct hlist_node index_hlist; | |
cd13539b ED |
1911 | |
1912 | /* | |
1913 | * Cache lines mostly used on transmit path | |
1914 | */ | |
e8a0464c DM |
1915 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
1916 | unsigned int num_tx_queues; | |
fd2ea0a7 | 1917 | unsigned int real_num_tx_queues; |
af356afa | 1918 | struct Qdisc *qdisc; |
59cc1f61 JK |
1919 | #ifdef CONFIG_NET_SCHED |
1920 | DECLARE_HASHTABLE (qdisc_hash, 4); | |
1921 | #endif | |
0cd29503 | 1922 | unsigned int tx_queue_len; |
c3f26a26 | 1923 | spinlock_t tx_global_lock; |
14ffbbb8 | 1924 | int watchdog_timeo; |
cd13539b | 1925 | |
bf264145 | 1926 | #ifdef CONFIG_XPS |
80d19669 AN |
1927 | struct xps_dev_maps __rcu *xps_cpus_map; |
1928 | struct xps_dev_maps __rcu *xps_rxqs_map; | |
bf264145 | 1929 | #endif |
1f211a1b | 1930 | #ifdef CONFIG_NET_CLS_ACT |
46209401 | 1931 | struct mini_Qdisc __rcu *miniq_egress; |
1f211a1b | 1932 | #endif |
0c4f691f | 1933 | |
9356b8fc | 1934 | /* These may be needed for future network-power-down code. */ |
9356b8fc ED |
1935 | struct timer_list watchdog_timer; |
1936 | ||
29b4433d | 1937 | int __percpu *pcpu_refcnt; |
1da177e4 | 1938 | struct list_head todo_list; |
1da177e4 | 1939 | |
e014debe | 1940 | struct list_head link_watch_list; |
572a103d | 1941 | |
1da177e4 | 1942 | enum { NETREG_UNINITIALIZED=0, |
b17a7c17 | 1943 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
1944 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
1945 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
1946 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 1947 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
449f4544 ED |
1948 | } reg_state:8; |
1949 | ||
536721b1 | 1950 | bool dismantle; |
a2835763 PM |
1951 | |
1952 | enum { | |
1953 | RTNL_LINK_INITIALIZED, | |
1954 | RTNL_LINK_INITIALIZING, | |
1955 | } rtnl_link_state:16; | |
1da177e4 | 1956 | |
cf124db5 DM |
1957 | bool needs_free_netdev; |
1958 | void (*priv_destructor)(struct net_device *dev); | |
1da177e4 | 1959 | |
1da177e4 | 1960 | #ifdef CONFIG_NETPOLL |
5fbee843 | 1961 | struct netpoll_info __rcu *npinfo; |
1da177e4 | 1962 | #endif |
eae792b7 | 1963 | |
0c5c9fb5 | 1964 | possible_net_t nd_net; |
4a1c5371 | 1965 | |
4951704b | 1966 | /* mid-layer private */ |
a7855c78 | 1967 | union { |
536721b1 KK |
1968 | void *ml_priv; |
1969 | struct pcpu_lstats __percpu *lstats; | |
8f84985f | 1970 | struct pcpu_sw_netstats __percpu *tstats; |
536721b1 KK |
1971 | struct pcpu_dstats __percpu *dstats; |
1972 | struct pcpu_vstats __percpu *vstats; | |
a7855c78 | 1973 | }; |
536721b1 | 1974 | |
fb585b44 | 1975 | #if IS_ENABLED(CONFIG_GARP) |
3cc77ec7 | 1976 | struct garp_port __rcu *garp_port; |
fb585b44 TK |
1977 | #endif |
1978 | #if IS_ENABLED(CONFIG_MRP) | |
febf018d | 1979 | struct mrp_port __rcu *mrp_port; |
fb585b44 | 1980 | #endif |
1da177e4 | 1981 | |
5e82b4b2 | 1982 | struct device dev; |
0c509a6c | 1983 | const struct attribute_group *sysfs_groups[4]; |
a953be53 | 1984 | const struct attribute_group *sysfs_rx_queue_group; |
38f7b870 | 1985 | |
38f7b870 | 1986 | const struct rtnl_link_ops *rtnl_link_ops; |
f25f4e44 | 1987 | |
82cc1a7a PWJ |
1988 | /* for setting kernel sock attribute on TCP connection setup */ |
1989 | #define GSO_MAX_SIZE 65536 | |
1990 | unsigned int gso_max_size; | |
30b678d8 BH |
1991 | #define GSO_MAX_SEGS 65535 |
1992 | u16 gso_max_segs; | |
743b03a8 | 1993 | |
7a6b6f51 | 1994 | #ifdef CONFIG_DCB |
32953543 | 1995 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
2f90b865 | 1996 | #endif |
ffcfe25b | 1997 | s16 num_tc; |
5e82b4b2 BH |
1998 | struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE]; |
1999 | u8 prio_tc_map[TC_BITMASK + 1]; | |
2f90b865 | 2000 | |
d11ead75 | 2001 | #if IS_ENABLED(CONFIG_FCOE) |
4d288d57 | 2002 | unsigned int fcoe_ddp_xid; |
5bc1421e | 2003 | #endif |
86f8515f | 2004 | #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO) |
5bc1421e | 2005 | struct netprio_map __rcu *priomap; |
4d288d57 | 2006 | #endif |
5e82b4b2 | 2007 | struct phy_device *phydev; |
e679c9c1 | 2008 | struct sfp_bus *sfp_bus; |
5e82b4b2 | 2009 | struct lock_class_key *qdisc_tx_busylock; |
f9eb8aea | 2010 | struct lock_class_key *qdisc_running_key; |
5e82b4b2 | 2011 | bool proto_down; |
1da177e4 | 2012 | }; |
43cb76d9 | 2013 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 | 2014 | |
b5cdae32 DM |
2015 | static inline bool netif_elide_gro(const struct net_device *dev) |
2016 | { | |
2017 | if (!(dev->features & NETIF_F_GRO) || dev->xdp_prog) | |
2018 | return true; | |
2019 | return false; | |
2020 | } | |
2021 | ||
1da177e4 | 2022 | #define NETDEV_ALIGN 32 |
1da177e4 | 2023 | |
4f57c087 JF |
2024 | static inline |
2025 | int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio) | |
2026 | { | |
2027 | return dev->prio_tc_map[prio & TC_BITMASK]; | |
2028 | } | |
2029 | ||
2030 | static inline | |
2031 | int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc) | |
2032 | { | |
2033 | if (tc >= dev->num_tc) | |
2034 | return -EINVAL; | |
2035 | ||
2036 | dev->prio_tc_map[prio & TC_BITMASK] = tc & TC_BITMASK; | |
2037 | return 0; | |
2038 | } | |
2039 | ||
8d059b0f | 2040 | int netdev_txq_to_tc(struct net_device *dev, unsigned int txq); |
9cf1f6a8 AD |
2041 | void netdev_reset_tc(struct net_device *dev); |
2042 | int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset); | |
2043 | int netdev_set_num_tc(struct net_device *dev, u8 num_tc); | |
4f57c087 JF |
2044 | |
2045 | static inline | |
2046 | int netdev_get_num_tc(struct net_device *dev) | |
2047 | { | |
2048 | return dev->num_tc; | |
2049 | } | |
2050 | ||
ffcfe25b AD |
2051 | void netdev_unbind_sb_channel(struct net_device *dev, |
2052 | struct net_device *sb_dev); | |
2053 | int netdev_bind_sb_channel_queue(struct net_device *dev, | |
2054 | struct net_device *sb_dev, | |
2055 | u8 tc, u16 count, u16 offset); | |
2056 | int netdev_set_sb_channel(struct net_device *dev, u16 channel); | |
2057 | static inline int netdev_get_sb_channel(struct net_device *dev) | |
2058 | { | |
2059 | return max_t(int, -dev->num_tc, 0); | |
2060 | } | |
2061 | ||
e8a0464c DM |
2062 | static inline |
2063 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
2064 | unsigned int index) | |
2065 | { | |
2066 | return &dev->_tx[index]; | |
2067 | } | |
2068 | ||
10c51b56 DB |
2069 | static inline struct netdev_queue *skb_get_tx_queue(const struct net_device *dev, |
2070 | const struct sk_buff *skb) | |
2071 | { | |
2072 | return netdev_get_tx_queue(dev, skb_get_queue_mapping(skb)); | |
2073 | } | |
2074 | ||
e8a0464c DM |
2075 | static inline void netdev_for_each_tx_queue(struct net_device *dev, |
2076 | void (*f)(struct net_device *, | |
2077 | struct netdev_queue *, | |
2078 | void *), | |
2079 | void *arg) | |
2080 | { | |
2081 | unsigned int i; | |
2082 | ||
2083 | for (i = 0; i < dev->num_tx_queues; i++) | |
2084 | f(dev, &dev->_tx[i], arg); | |
2085 | } | |
2086 | ||
d3fff6c4 ED |
2087 | #define netdev_lockdep_set_classes(dev) \ |
2088 | { \ | |
2089 | static struct lock_class_key qdisc_tx_busylock_key; \ | |
2090 | static struct lock_class_key qdisc_running_key; \ | |
2091 | static struct lock_class_key qdisc_xmit_lock_key; \ | |
2092 | static struct lock_class_key dev_addr_list_lock_key; \ | |
2093 | unsigned int i; \ | |
2094 | \ | |
2095 | (dev)->qdisc_tx_busylock = &qdisc_tx_busylock_key; \ | |
2096 | (dev)->qdisc_running_key = &qdisc_running_key; \ | |
2097 | lockdep_set_class(&(dev)->addr_list_lock, \ | |
2098 | &dev_addr_list_lock_key); \ | |
2099 | for (i = 0; i < (dev)->num_tx_queues; i++) \ | |
2100 | lockdep_set_class(&(dev)->_tx[i]._xmit_lock, \ | |
2101 | &qdisc_xmit_lock_key); \ | |
2102 | } | |
2103 | ||
f629d208 | 2104 | struct netdev_queue *netdev_pick_tx(struct net_device *dev, |
f663dd9a JW |
2105 | struct sk_buff *skb, |
2106 | void *accel_priv); | |
8c4c49df | 2107 | |
871b642a PA |
2108 | /* returns the headroom that the master device needs to take in account |
2109 | * when forwarding to this dev | |
2110 | */ | |
2111 | static inline unsigned netdev_get_fwd_headroom(struct net_device *dev) | |
2112 | { | |
2113 | return dev->priv_flags & IFF_PHONY_HEADROOM ? 0 : dev->needed_headroom; | |
2114 | } | |
2115 | ||
2116 | static inline void netdev_set_rx_headroom(struct net_device *dev, int new_hr) | |
2117 | { | |
2118 | if (dev->netdev_ops->ndo_set_rx_headroom) | |
2119 | dev->netdev_ops->ndo_set_rx_headroom(dev, new_hr); | |
2120 | } | |
2121 | ||
2122 | /* set the device rx headroom to the dev's default */ | |
2123 | static inline void netdev_reset_rx_headroom(struct net_device *dev) | |
2124 | { | |
2125 | netdev_set_rx_headroom(dev, -1); | |
2126 | } | |
2127 | ||
c346dca1 YH |
2128 | /* |
2129 | * Net namespace inlines | |
2130 | */ | |
2131 | static inline | |
2132 | struct net *dev_net(const struct net_device *dev) | |
2133 | { | |
c2d9ba9b | 2134 | return read_pnet(&dev->nd_net); |
c346dca1 YH |
2135 | } |
2136 | ||
2137 | static inline | |
f5aa23fd | 2138 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 | 2139 | { |
0c5c9fb5 | 2140 | write_pnet(&dev->nd_net, net); |
c346dca1 YH |
2141 | } |
2142 | ||
bea3348e SH |
2143 | /** |
2144 | * netdev_priv - access network device private data | |
2145 | * @dev: network device | |
2146 | * | |
2147 | * Get network device private data | |
2148 | */ | |
6472ce60 | 2149 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 2150 | { |
1ce8e7b5 | 2151 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
1da177e4 LT |
2152 | } |
2153 | ||
1da177e4 LT |
2154 | /* Set the sysfs physical device reference for the network logical device |
2155 | * if set prior to registration will cause a symlink during initialization. | |
2156 | */ | |
43cb76d9 | 2157 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 2158 | |
384912ed | 2159 | /* Set the sysfs device type for the network logical device to allow |
3f79410c | 2160 | * fine-grained identification of different network device types. For |
5e82b4b2 | 2161 | * example Ethernet, Wireless LAN, Bluetooth, WiMAX etc. |
384912ed MH |
2162 | */ |
2163 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) | |
2164 | ||
82dc3c63 ED |
2165 | /* Default NAPI poll() weight |
2166 | * Device drivers are strongly advised to not use bigger value | |
2167 | */ | |
2168 | #define NAPI_POLL_WEIGHT 64 | |
2169 | ||
3b582cc1 | 2170 | /** |
5e82b4b2 | 2171 | * netif_napi_add - initialize a NAPI context |
3b582cc1 | 2172 | * @dev: network device |
5e82b4b2 | 2173 | * @napi: NAPI context |
3b582cc1 SH |
2174 | * @poll: polling function |
2175 | * @weight: default weight | |
2176 | * | |
5e82b4b2 BH |
2177 | * netif_napi_add() must be used to initialize a NAPI context prior to calling |
2178 | * *any* of the other NAPI-related functions. | |
3b582cc1 | 2179 | */ |
d565b0a1 HX |
2180 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
2181 | int (*poll)(struct napi_struct *, int), int weight); | |
bea3348e | 2182 | |
d64b5e85 | 2183 | /** |
5e82b4b2 | 2184 | * netif_tx_napi_add - initialize a NAPI context |
d64b5e85 | 2185 | * @dev: network device |
5e82b4b2 | 2186 | * @napi: NAPI context |
d64b5e85 ED |
2187 | * @poll: polling function |
2188 | * @weight: default weight | |
2189 | * | |
2190 | * This variant of netif_napi_add() should be used from drivers using NAPI | |
2191 | * to exclusively poll a TX queue. | |
2192 | * This will avoid we add it into napi_hash[], thus polluting this hash table. | |
2193 | */ | |
2194 | static inline void netif_tx_napi_add(struct net_device *dev, | |
2195 | struct napi_struct *napi, | |
2196 | int (*poll)(struct napi_struct *, int), | |
2197 | int weight) | |
2198 | { | |
2199 | set_bit(NAPI_STATE_NO_BUSY_POLL, &napi->state); | |
2200 | netif_napi_add(dev, napi, poll, weight); | |
2201 | } | |
2202 | ||
d8156534 | 2203 | /** |
5e82b4b2 BH |
2204 | * netif_napi_del - remove a NAPI context |
2205 | * @napi: NAPI context | |
d8156534 | 2206 | * |
5e82b4b2 | 2207 | * netif_napi_del() removes a NAPI context from the network device NAPI list |
d8156534 | 2208 | */ |
d565b0a1 HX |
2209 | void netif_napi_del(struct napi_struct *napi); |
2210 | ||
2211 | struct napi_gro_cb { | |
78a478d0 | 2212 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
5e82b4b2 | 2213 | void *frag0; |
78a478d0 | 2214 | |
7489594c HX |
2215 | /* Length of frag0. */ |
2216 | unsigned int frag0_len; | |
2217 | ||
86911732 | 2218 | /* This indicates where we are processing relative to skb->data. */ |
5e82b4b2 | 2219 | int data_offset; |
86911732 | 2220 | |
d565b0a1 | 2221 | /* This is non-zero if the packet cannot be merged with the new skb. */ |
bf5a755f JC |
2222 | u16 flush; |
2223 | ||
2224 | /* Save the IP ID here and check when we get to the transport layer */ | |
2225 | u16 flush_id; | |
d565b0a1 HX |
2226 | |
2227 | /* Number of segments aggregated. */ | |
2e71a6f8 ED |
2228 | u16 count; |
2229 | ||
15e2396d TH |
2230 | /* Start offset for remote checksum offload */ |
2231 | u16 gro_remcsum_start; | |
2232 | ||
2e71a6f8 ED |
2233 | /* jiffies when first packet was created/queued */ |
2234 | unsigned long age; | |
86347245 | 2235 | |
afe93325 | 2236 | /* Used in ipv6_gro_receive() and foo-over-udp */ |
b582ef09 OG |
2237 | u16 proto; |
2238 | ||
baa32ff4 TH |
2239 | /* This is non-zero if the packet may be of the same flow. */ |
2240 | u8 same_flow:1; | |
2241 | ||
fac8e0f5 JG |
2242 | /* Used in tunnel GRO receive */ |
2243 | u8 encap_mark:1; | |
573e8fca TH |
2244 | |
2245 | /* GRO checksum is valid */ | |
2246 | u8 csum_valid:1; | |
2247 | ||
662880f4 TH |
2248 | /* Number of checksums via CHECKSUM_UNNECESSARY */ |
2249 | u8 csum_cnt:3; | |
c3c7c254 | 2250 | |
baa32ff4 TH |
2251 | /* Free the skb? */ |
2252 | u8 free:2; | |
2253 | #define NAPI_GRO_FREE 1 | |
2254 | #define NAPI_GRO_FREE_STOLEN_HEAD 2 | |
2255 | ||
efc98d08 TH |
2256 | /* Used in foo-over-udp, set in udp[46]_gro_receive */ |
2257 | u8 is_ipv6:1; | |
2258 | ||
a0ca153f AD |
2259 | /* Used in GRE, set in fou/gue_gro_receive */ |
2260 | u8 is_fou:1; | |
2261 | ||
1530545e AD |
2262 | /* Used to determine if flush_id can be ignored */ |
2263 | u8 is_atomic:1; | |
2264 | ||
fcd91dd4 SD |
2265 | /* Number of gro_receive callbacks this packet already went through */ |
2266 | u8 recursion_counter:4; | |
2267 | ||
2268 | /* 1 bit hole */ | |
baa32ff4 | 2269 | |
bf5a755f JC |
2270 | /* used to support CHECKSUM_COMPLETE for tunneling protocols */ |
2271 | __wsum csum; | |
2272 | ||
c3c7c254 ED |
2273 | /* used in skb_gro_receive() slow path */ |
2274 | struct sk_buff *last; | |
d565b0a1 HX |
2275 | }; |
2276 | ||
2277 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) | |
d8156534 | 2278 | |
fcd91dd4 SD |
2279 | #define GRO_RECURSION_LIMIT 15 |
2280 | static inline int gro_recursion_inc_test(struct sk_buff *skb) | |
2281 | { | |
2282 | return ++NAPI_GRO_CB(skb)->recursion_counter == GRO_RECURSION_LIMIT; | |
2283 | } | |
2284 | ||
d4546c25 DM |
2285 | typedef struct sk_buff *(*gro_receive_t)(struct list_head *, struct sk_buff *); |
2286 | static inline struct sk_buff *call_gro_receive(gro_receive_t cb, | |
2287 | struct list_head *head, | |
2288 | struct sk_buff *skb) | |
fcd91dd4 SD |
2289 | { |
2290 | if (unlikely(gro_recursion_inc_test(skb))) { | |
2291 | NAPI_GRO_CB(skb)->flush |= 1; | |
2292 | return NULL; | |
2293 | } | |
2294 | ||
2295 | return cb(head, skb); | |
2296 | } | |
2297 | ||
d4546c25 DM |
2298 | typedef struct sk_buff *(*gro_receive_sk_t)(struct sock *, struct list_head *, |
2299 | struct sk_buff *); | |
2300 | static inline struct sk_buff *call_gro_receive_sk(gro_receive_sk_t cb, | |
2301 | struct sock *sk, | |
2302 | struct list_head *head, | |
2303 | struct sk_buff *skb) | |
fcd91dd4 SD |
2304 | { |
2305 | if (unlikely(gro_recursion_inc_test(skb))) { | |
2306 | NAPI_GRO_CB(skb)->flush |= 1; | |
2307 | return NULL; | |
2308 | } | |
2309 | ||
2310 | return cb(sk, head, skb); | |
2311 | } | |
2312 | ||
1da177e4 | 2313 | struct packet_type { |
f2ccd8fa DM |
2314 | __be16 type; /* This is really htons(ether_type). */ |
2315 | struct net_device *dev; /* NULL is wildcarded here */ | |
2316 | int (*func) (struct sk_buff *, | |
2317 | struct net_device *, | |
2318 | struct packet_type *, | |
2319 | struct net_device *); | |
17266ee9 EC |
2320 | void (*list_func) (struct list_head *, |
2321 | struct packet_type *, | |
2322 | struct net_device *); | |
c0de08d0 EL |
2323 | bool (*id_match)(struct packet_type *ptype, |
2324 | struct sock *sk); | |
1da177e4 LT |
2325 | void *af_packet_priv; |
2326 | struct list_head list; | |
2327 | }; | |
2328 | ||
f191a1d1 | 2329 | struct offload_callbacks { |
576a30eb | 2330 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
c8f44aff | 2331 | netdev_features_t features); |
d4546c25 DM |
2332 | struct sk_buff *(*gro_receive)(struct list_head *head, |
2333 | struct sk_buff *skb); | |
299603e8 | 2334 | int (*gro_complete)(struct sk_buff *skb, int nhoff); |
f191a1d1 VY |
2335 | }; |
2336 | ||
2337 | struct packet_offload { | |
2338 | __be16 type; /* This is really htons(ether_type). */ | |
bdef7de4 | 2339 | u16 priority; |
f191a1d1 VY |
2340 | struct offload_callbacks callbacks; |
2341 | struct list_head list; | |
1da177e4 LT |
2342 | }; |
2343 | ||
5e82b4b2 | 2344 | /* often modified stats are per-CPU, other are shared (netdev->stats) */ |
8f84985f LR |
2345 | struct pcpu_sw_netstats { |
2346 | u64 rx_packets; | |
2347 | u64 rx_bytes; | |
2348 | u64 tx_packets; | |
2349 | u64 tx_bytes; | |
2350 | struct u64_stats_sync syncp; | |
2351 | }; | |
2352 | ||
aabc92bb PNA |
2353 | #define __netdev_alloc_pcpu_stats(type, gfp) \ |
2354 | ({ \ | |
2355 | typeof(type) __percpu *pcpu_stats = alloc_percpu_gfp(type, gfp);\ | |
2356 | if (pcpu_stats) { \ | |
2357 | int __cpu; \ | |
2358 | for_each_possible_cpu(__cpu) { \ | |
2359 | typeof(type) *stat; \ | |
2360 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ | |
2361 | u64_stats_init(&stat->syncp); \ | |
2362 | } \ | |
2363 | } \ | |
2364 | pcpu_stats; \ | |
1c213bd2 WC |
2365 | }) |
2366 | ||
aabc92bb | 2367 | #define netdev_alloc_pcpu_stats(type) \ |
326fcfa5 | 2368 | __netdev_alloc_pcpu_stats(type, GFP_KERNEL) |
aabc92bb | 2369 | |
764f5e54 JP |
2370 | enum netdev_lag_tx_type { |
2371 | NETDEV_LAG_TX_TYPE_UNKNOWN, | |
2372 | NETDEV_LAG_TX_TYPE_RANDOM, | |
2373 | NETDEV_LAG_TX_TYPE_BROADCAST, | |
2374 | NETDEV_LAG_TX_TYPE_ROUNDROBIN, | |
2375 | NETDEV_LAG_TX_TYPE_ACTIVEBACKUP, | |
2376 | NETDEV_LAG_TX_TYPE_HASH, | |
2377 | }; | |
2378 | ||
f44aa9ef JH |
2379 | enum netdev_lag_hash { |
2380 | NETDEV_LAG_HASH_NONE, | |
2381 | NETDEV_LAG_HASH_L2, | |
2382 | NETDEV_LAG_HASH_L34, | |
2383 | NETDEV_LAG_HASH_L23, | |
2384 | NETDEV_LAG_HASH_E23, | |
2385 | NETDEV_LAG_HASH_E34, | |
2386 | NETDEV_LAG_HASH_UNKNOWN, | |
2387 | }; | |
2388 | ||
764f5e54 JP |
2389 | struct netdev_lag_upper_info { |
2390 | enum netdev_lag_tx_type tx_type; | |
f44aa9ef | 2391 | enum netdev_lag_hash hash_type; |
764f5e54 JP |
2392 | }; |
2393 | ||
fb1b2e3c JP |
2394 | struct netdev_lag_lower_state_info { |
2395 | u8 link_up : 1, | |
2396 | tx_enabled : 1; | |
2397 | }; | |
2398 | ||
1da177e4 LT |
2399 | #include <linux/notifier.h> |
2400 | ||
ede2762d KT |
2401 | /* netdevice notifier chain. Please remember to update netdev_cmd_to_name() |
2402 | * and the rtnetlink notification exclusion list in rtnetlink_event() when | |
2403 | * adding new types. | |
dcfe1421 | 2404 | */ |
ede2762d KT |
2405 | enum netdev_cmd { |
2406 | NETDEV_UP = 1, /* For now you can't veto a device up/down */ | |
2407 | NETDEV_DOWN, | |
2408 | NETDEV_REBOOT, /* Tell a protocol stack a network interface | |
dcfe1421 AW |
2409 | detected a hardware crash and restarted |
2410 | - we can use this eg to kick tcp sessions | |
2411 | once done */ | |
ede2762d KT |
2412 | NETDEV_CHANGE, /* Notify device state change */ |
2413 | NETDEV_REGISTER, | |
2414 | NETDEV_UNREGISTER, | |
2415 | NETDEV_CHANGEMTU, /* notify after mtu change happened */ | |
2416 | NETDEV_CHANGEADDR, | |
2417 | NETDEV_GOING_DOWN, | |
2418 | NETDEV_CHANGENAME, | |
2419 | NETDEV_FEAT_CHANGE, | |
2420 | NETDEV_BONDING_FAILOVER, | |
2421 | NETDEV_PRE_UP, | |
2422 | NETDEV_PRE_TYPE_CHANGE, | |
2423 | NETDEV_POST_TYPE_CHANGE, | |
2424 | NETDEV_POST_INIT, | |
ede2762d KT |
2425 | NETDEV_RELEASE, |
2426 | NETDEV_NOTIFY_PEERS, | |
2427 | NETDEV_JOIN, | |
2428 | NETDEV_CHANGEUPPER, | |
2429 | NETDEV_RESEND_IGMP, | |
2430 | NETDEV_PRECHANGEMTU, /* notify before mtu change happened */ | |
2431 | NETDEV_CHANGEINFODATA, | |
2432 | NETDEV_BONDING_INFO, | |
2433 | NETDEV_PRECHANGEUPPER, | |
2434 | NETDEV_CHANGELOWERSTATE, | |
2435 | NETDEV_UDP_TUNNEL_PUSH_INFO, | |
2436 | NETDEV_UDP_TUNNEL_DROP_INFO, | |
2437 | NETDEV_CHANGE_TX_QUEUE_LEN, | |
9daae9bd GP |
2438 | NETDEV_CVLAN_FILTER_PUSH_INFO, |
2439 | NETDEV_CVLAN_FILTER_DROP_INFO, | |
2440 | NETDEV_SVLAN_FILTER_PUSH_INFO, | |
2441 | NETDEV_SVLAN_FILTER_DROP_INFO, | |
ede2762d KT |
2442 | }; |
2443 | const char *netdev_cmd_to_name(enum netdev_cmd cmd); | |
dcfe1421 | 2444 | |
f629d208 JP |
2445 | int register_netdevice_notifier(struct notifier_block *nb); |
2446 | int unregister_netdevice_notifier(struct notifier_block *nb); | |
351638e7 JP |
2447 | |
2448 | struct netdev_notifier_info { | |
51d0c047 DA |
2449 | struct net_device *dev; |
2450 | struct netlink_ext_ack *extack; | |
351638e7 JP |
2451 | }; |
2452 | ||
be9efd36 JP |
2453 | struct netdev_notifier_change_info { |
2454 | struct netdev_notifier_info info; /* must be first */ | |
2455 | unsigned int flags_changed; | |
2456 | }; | |
2457 | ||
0e4ead9d JP |
2458 | struct netdev_notifier_changeupper_info { |
2459 | struct netdev_notifier_info info; /* must be first */ | |
2460 | struct net_device *upper_dev; /* new upper dev */ | |
2461 | bool master; /* is upper dev master */ | |
5e82b4b2 | 2462 | bool linking; /* is the notification for link or unlink */ |
29bf24af | 2463 | void *upper_info; /* upper dev info */ |
0e4ead9d JP |
2464 | }; |
2465 | ||
04d48266 JP |
2466 | struct netdev_notifier_changelowerstate_info { |
2467 | struct netdev_notifier_info info; /* must be first */ | |
2468 | void *lower_state_info; /* is lower dev state */ | |
2469 | }; | |
2470 | ||
75538c2b CW |
2471 | static inline void netdev_notifier_info_init(struct netdev_notifier_info *info, |
2472 | struct net_device *dev) | |
2473 | { | |
2474 | info->dev = dev; | |
51d0c047 | 2475 | info->extack = NULL; |
75538c2b CW |
2476 | } |
2477 | ||
351638e7 JP |
2478 | static inline struct net_device * |
2479 | netdev_notifier_info_to_dev(const struct netdev_notifier_info *info) | |
2480 | { | |
2481 | return info->dev; | |
2482 | } | |
2483 | ||
51d0c047 DA |
2484 | static inline struct netlink_ext_ack * |
2485 | netdev_notifier_info_to_extack(const struct netdev_notifier_info *info) | |
2486 | { | |
2487 | return info->extack; | |
2488 | } | |
2489 | ||
f629d208 | 2490 | int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
dcfe1421 AW |
2491 | |
2492 | ||
1da177e4 LT |
2493 | extern rwlock_t dev_base_lock; /* Device list lock */ |
2494 | ||
881d966b EB |
2495 | #define for_each_netdev(net, d) \ |
2496 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
dcbccbd4 EB |
2497 | #define for_each_netdev_reverse(net, d) \ |
2498 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) | |
c6d14c84 ED |
2499 | #define for_each_netdev_rcu(net, d) \ |
2500 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b EB |
2501 | #define for_each_netdev_safe(net, d, n) \ |
2502 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
2503 | #define for_each_netdev_continue(net, d) \ | |
2504 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
254245d2 | 2505 | #define for_each_netdev_continue_rcu(net, d) \ |
2506 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) | |
8a7fbfab | 2507 | #define for_each_netdev_in_bond_rcu(bond, slave) \ |
2508 | for_each_netdev_rcu(&init_net, slave) \ | |
4ccce02e | 2509 | if (netdev_master_upper_dev_get_rcu(slave) == (bond)) |
881d966b | 2510 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
7562f876 | 2511 | |
a050c33f DL |
2512 | static inline struct net_device *next_net_device(struct net_device *dev) |
2513 | { | |
2514 | struct list_head *lh; | |
2515 | struct net *net; | |
2516 | ||
c346dca1 | 2517 | net = dev_net(dev); |
a050c33f DL |
2518 | lh = dev->dev_list.next; |
2519 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2520 | } | |
2521 | ||
ce81b76a ED |
2522 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
2523 | { | |
2524 | struct list_head *lh; | |
2525 | struct net *net; | |
2526 | ||
2527 | net = dev_net(dev); | |
ccf43438 | 2528 | lh = rcu_dereference(list_next_rcu(&dev->dev_list)); |
ce81b76a ED |
2529 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
2530 | } | |
2531 | ||
a050c33f DL |
2532 | static inline struct net_device *first_net_device(struct net *net) |
2533 | { | |
2534 | return list_empty(&net->dev_base_head) ? NULL : | |
2535 | net_device_entry(net->dev_base_head.next); | |
2536 | } | |
7562f876 | 2537 | |
ccf43438 ED |
2538 | static inline struct net_device *first_net_device_rcu(struct net *net) |
2539 | { | |
2540 | struct list_head *lh = rcu_dereference(list_next_rcu(&net->dev_base_head)); | |
2541 | ||
2542 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2543 | } | |
2544 | ||
f629d208 JP |
2545 | int netdev_boot_setup_check(struct net_device *dev); |
2546 | unsigned long netdev_boot_base(const char *prefix, int unit); | |
2547 | struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, | |
2548 | const char *hwaddr); | |
2549 | struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
2550 | struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
2551 | void dev_add_pack(struct packet_type *pt); | |
2552 | void dev_remove_pack(struct packet_type *pt); | |
2553 | void __dev_remove_pack(struct packet_type *pt); | |
2554 | void dev_add_offload(struct packet_offload *po); | |
2555 | void dev_remove_offload(struct packet_offload *po); | |
f629d208 | 2556 | |
a54acb3a | 2557 | int dev_get_iflink(const struct net_device *dev); |
fc4099f1 | 2558 | int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb); |
6c555490 WC |
2559 | struct net_device *__dev_get_by_flags(struct net *net, unsigned short flags, |
2560 | unsigned short mask); | |
f629d208 JP |
2561 | struct net_device *dev_get_by_name(struct net *net, const char *name); |
2562 | struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); | |
2563 | struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
2564 | int dev_alloc_name(struct net_device *dev, const char *name); | |
2565 | int dev_open(struct net_device *dev); | |
7051b88a | 2566 | void dev_close(struct net_device *dev); |
2567 | void dev_close_many(struct list_head *head, bool unlink); | |
f629d208 | 2568 | void dev_disable_lro(struct net_device *dev); |
0c4b51f0 | 2569 | int dev_loopback_xmit(struct net *net, struct sock *sk, struct sk_buff *newskb); |
2b4aa3ce | 2570 | int dev_queue_xmit(struct sk_buff *skb); |
f663dd9a | 2571 | int dev_queue_xmit_accel(struct sk_buff *skb, void *accel_priv); |
865b03f2 | 2572 | int dev_direct_xmit(struct sk_buff *skb, u16 queue_id); |
f629d208 JP |
2573 | int register_netdevice(struct net_device *dev); |
2574 | void unregister_netdevice_queue(struct net_device *dev, struct list_head *head); | |
2575 | void unregister_netdevice_many(struct list_head *head); | |
44a0873d ED |
2576 | static inline void unregister_netdevice(struct net_device *dev) |
2577 | { | |
2578 | unregister_netdevice_queue(dev, NULL); | |
2579 | } | |
2580 | ||
f629d208 JP |
2581 | int netdev_refcnt_read(const struct net_device *dev); |
2582 | void free_netdev(struct net_device *dev); | |
74d332c1 | 2583 | void netdev_freemem(struct net_device *dev); |
f629d208 JP |
2584 | void synchronize_net(void); |
2585 | int init_dummy_netdev(struct net_device *dev); | |
937f1ba5 | 2586 | |
f60e5990 | 2587 | DECLARE_PER_CPU(int, xmit_recursion); |
a70b506e DB |
2588 | #define XMIT_RECURSION_LIMIT 10 |
2589 | ||
f60e5990 | 2590 | static inline int dev_recursion_level(void) |
2591 | { | |
2592 | return this_cpu_read(xmit_recursion); | |
2593 | } | |
2594 | ||
f629d208 JP |
2595 | struct net_device *dev_get_by_index(struct net *net, int ifindex); |
2596 | struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
2597 | struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); | |
90b602f8 | 2598 | struct net_device *dev_get_by_napi_id(unsigned int napi_id); |
f629d208 JP |
2599 | int netdev_get_name(struct net *net, char *name, int ifindex); |
2600 | int dev_restart(struct net_device *dev); | |
d4546c25 | 2601 | int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb); |
86911732 HX |
2602 | |
2603 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) | |
2604 | { | |
2605 | return NAPI_GRO_CB(skb)->data_offset; | |
2606 | } | |
2607 | ||
2608 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) | |
2609 | { | |
2610 | return skb->len - NAPI_GRO_CB(skb)->data_offset; | |
2611 | } | |
2612 | ||
2613 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) | |
2614 | { | |
2615 | NAPI_GRO_CB(skb)->data_offset += len; | |
2616 | } | |
2617 | ||
a5b1cf28 HX |
2618 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
2619 | unsigned int offset) | |
86911732 | 2620 | { |
a5b1cf28 HX |
2621 | return NAPI_GRO_CB(skb)->frag0 + offset; |
2622 | } | |
78a478d0 | 2623 | |
a5b1cf28 HX |
2624 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
2625 | { | |
2626 | return NAPI_GRO_CB(skb)->frag0_len < hlen; | |
2627 | } | |
78a478d0 | 2628 | |
57ea52a8 HX |
2629 | static inline void skb_gro_frag0_invalidate(struct sk_buff *skb) |
2630 | { | |
2631 | NAPI_GRO_CB(skb)->frag0 = NULL; | |
2632 | NAPI_GRO_CB(skb)->frag0_len = 0; | |
2633 | } | |
2634 | ||
a5b1cf28 HX |
2635 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
2636 | unsigned int offset) | |
2637 | { | |
17dd759c HX |
2638 | if (!pskb_may_pull(skb, hlen)) |
2639 | return NULL; | |
2640 | ||
57ea52a8 | 2641 | skb_gro_frag0_invalidate(skb); |
17dd759c | 2642 | return skb->data + offset; |
86911732 | 2643 | } |
1da177e4 | 2644 | |
36e7b1b8 HX |
2645 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
2646 | { | |
78d3fd0b HX |
2647 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
2648 | skb_network_offset(skb); | |
36e7b1b8 HX |
2649 | } |
2650 | ||
bf5a755f JC |
2651 | static inline void skb_gro_postpull_rcsum(struct sk_buff *skb, |
2652 | const void *start, unsigned int len) | |
2653 | { | |
573e8fca | 2654 | if (NAPI_GRO_CB(skb)->csum_valid) |
bf5a755f JC |
2655 | NAPI_GRO_CB(skb)->csum = csum_sub(NAPI_GRO_CB(skb)->csum, |
2656 | csum_partial(start, len, 0)); | |
2657 | } | |
2658 | ||
573e8fca TH |
2659 | /* GRO checksum functions. These are logical equivalents of the normal |
2660 | * checksum functions (in skbuff.h) except that they operate on the GRO | |
2661 | * offsets and fields in sk_buff. | |
2662 | */ | |
2663 | ||
2664 | __sum16 __skb_gro_checksum_complete(struct sk_buff *skb); | |
2665 | ||
15e2396d TH |
2666 | static inline bool skb_at_gro_remcsum_start(struct sk_buff *skb) |
2667 | { | |
b7fe10e5 | 2668 | return (NAPI_GRO_CB(skb)->gro_remcsum_start == skb_gro_offset(skb)); |
15e2396d TH |
2669 | } |
2670 | ||
573e8fca TH |
2671 | static inline bool __skb_gro_checksum_validate_needed(struct sk_buff *skb, |
2672 | bool zero_okay, | |
2673 | __sum16 check) | |
2674 | { | |
6edec0e6 TH |
2675 | return ((skb->ip_summed != CHECKSUM_PARTIAL || |
2676 | skb_checksum_start_offset(skb) < | |
2677 | skb_gro_offset(skb)) && | |
15e2396d | 2678 | !skb_at_gro_remcsum_start(skb) && |
662880f4 | 2679 | NAPI_GRO_CB(skb)->csum_cnt == 0 && |
573e8fca TH |
2680 | (!zero_okay || check)); |
2681 | } | |
2682 | ||
2683 | static inline __sum16 __skb_gro_checksum_validate_complete(struct sk_buff *skb, | |
2684 | __wsum psum) | |
2685 | { | |
2686 | if (NAPI_GRO_CB(skb)->csum_valid && | |
2687 | !csum_fold(csum_add(psum, NAPI_GRO_CB(skb)->csum))) | |
2688 | return 0; | |
2689 | ||
2690 | NAPI_GRO_CB(skb)->csum = psum; | |
2691 | ||
2692 | return __skb_gro_checksum_complete(skb); | |
2693 | } | |
2694 | ||
573e8fca TH |
2695 | static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb) |
2696 | { | |
662880f4 TH |
2697 | if (NAPI_GRO_CB(skb)->csum_cnt > 0) { |
2698 | /* Consume a checksum from CHECKSUM_UNNECESSARY */ | |
2699 | NAPI_GRO_CB(skb)->csum_cnt--; | |
2700 | } else { | |
2701 | /* Update skb for CHECKSUM_UNNECESSARY and csum_level when we | |
2702 | * verified a new top level checksum or an encapsulated one | |
2703 | * during GRO. This saves work if we fallback to normal path. | |
2704 | */ | |
2705 | __skb_incr_checksum_unnecessary(skb); | |
573e8fca TH |
2706 | } |
2707 | } | |
2708 | ||
2709 | #define __skb_gro_checksum_validate(skb, proto, zero_okay, check, \ | |
2710 | compute_pseudo) \ | |
2711 | ({ \ | |
2712 | __sum16 __ret = 0; \ | |
2713 | if (__skb_gro_checksum_validate_needed(skb, zero_okay, check)) \ | |
2714 | __ret = __skb_gro_checksum_validate_complete(skb, \ | |
2715 | compute_pseudo(skb, proto)); \ | |
219f1d79 | 2716 | if (!__ret) \ |
573e8fca TH |
2717 | skb_gro_incr_csum_unnecessary(skb); \ |
2718 | __ret; \ | |
2719 | }) | |
2720 | ||
2721 | #define skb_gro_checksum_validate(skb, proto, compute_pseudo) \ | |
2722 | __skb_gro_checksum_validate(skb, proto, false, 0, compute_pseudo) | |
2723 | ||
2724 | #define skb_gro_checksum_validate_zero_check(skb, proto, check, \ | |
2725 | compute_pseudo) \ | |
2726 | __skb_gro_checksum_validate(skb, proto, true, check, compute_pseudo) | |
2727 | ||
2728 | #define skb_gro_checksum_simple_validate(skb) \ | |
2729 | __skb_gro_checksum_validate(skb, 0, false, 0, null_compute_pseudo) | |
2730 | ||
d96535a1 TH |
2731 | static inline bool __skb_gro_checksum_convert_check(struct sk_buff *skb) |
2732 | { | |
2733 | return (NAPI_GRO_CB(skb)->csum_cnt == 0 && | |
2734 | !NAPI_GRO_CB(skb)->csum_valid); | |
2735 | } | |
2736 | ||
2737 | static inline void __skb_gro_checksum_convert(struct sk_buff *skb, | |
2738 | __sum16 check, __wsum pseudo) | |
2739 | { | |
2740 | NAPI_GRO_CB(skb)->csum = ~pseudo; | |
2741 | NAPI_GRO_CB(skb)->csum_valid = 1; | |
2742 | } | |
2743 | ||
2744 | #define skb_gro_checksum_try_convert(skb, proto, check, compute_pseudo) \ | |
2745 | do { \ | |
2746 | if (__skb_gro_checksum_convert_check(skb)) \ | |
2747 | __skb_gro_checksum_convert(skb, check, \ | |
2748 | compute_pseudo(skb, proto)); \ | |
2749 | } while (0) | |
2750 | ||
26c4f7da TH |
2751 | struct gro_remcsum { |
2752 | int offset; | |
2753 | __wsum delta; | |
2754 | }; | |
2755 | ||
2756 | static inline void skb_gro_remcsum_init(struct gro_remcsum *grc) | |
2757 | { | |
846cd667 | 2758 | grc->offset = 0; |
26c4f7da TH |
2759 | grc->delta = 0; |
2760 | } | |
2761 | ||
b7fe10e5 TH |
2762 | static inline void *skb_gro_remcsum_process(struct sk_buff *skb, void *ptr, |
2763 | unsigned int off, size_t hdrlen, | |
2764 | int start, int offset, | |
2765 | struct gro_remcsum *grc, | |
2766 | bool nopartial) | |
dcdc8994 TH |
2767 | { |
2768 | __wsum delta; | |
b7fe10e5 | 2769 | size_t plen = hdrlen + max_t(size_t, offset + sizeof(u16), start); |
dcdc8994 TH |
2770 | |
2771 | BUG_ON(!NAPI_GRO_CB(skb)->csum_valid); | |
2772 | ||
15e2396d | 2773 | if (!nopartial) { |
b7fe10e5 TH |
2774 | NAPI_GRO_CB(skb)->gro_remcsum_start = off + hdrlen + start; |
2775 | return ptr; | |
2776 | } | |
2777 | ||
2778 | ptr = skb_gro_header_fast(skb, off); | |
2779 | if (skb_gro_header_hard(skb, off + plen)) { | |
2780 | ptr = skb_gro_header_slow(skb, off + plen, off); | |
2781 | if (!ptr) | |
2782 | return NULL; | |
15e2396d TH |
2783 | } |
2784 | ||
b7fe10e5 TH |
2785 | delta = remcsum_adjust(ptr + hdrlen, NAPI_GRO_CB(skb)->csum, |
2786 | start, offset); | |
dcdc8994 TH |
2787 | |
2788 | /* Adjust skb->csum since we changed the packet */ | |
dcdc8994 | 2789 | NAPI_GRO_CB(skb)->csum = csum_add(NAPI_GRO_CB(skb)->csum, delta); |
26c4f7da | 2790 | |
b7fe10e5 | 2791 | grc->offset = off + hdrlen + offset; |
26c4f7da | 2792 | grc->delta = delta; |
b7fe10e5 TH |
2793 | |
2794 | return ptr; | |
dcdc8994 TH |
2795 | } |
2796 | ||
26c4f7da TH |
2797 | static inline void skb_gro_remcsum_cleanup(struct sk_buff *skb, |
2798 | struct gro_remcsum *grc) | |
2799 | { | |
b7fe10e5 TH |
2800 | void *ptr; |
2801 | size_t plen = grc->offset + sizeof(u16); | |
2802 | ||
26c4f7da TH |
2803 | if (!grc->delta) |
2804 | return; | |
2805 | ||
b7fe10e5 TH |
2806 | ptr = skb_gro_header_fast(skb, grc->offset); |
2807 | if (skb_gro_header_hard(skb, grc->offset + sizeof(u16))) { | |
2808 | ptr = skb_gro_header_slow(skb, plen, grc->offset); | |
2809 | if (!ptr) | |
2810 | return; | |
2811 | } | |
2812 | ||
2813 | remcsum_unadjust((__sum16 *)ptr, grc->delta); | |
26c4f7da | 2814 | } |
dcdc8994 | 2815 | |
25393d3f | 2816 | #ifdef CONFIG_XFRM_OFFLOAD |
d4546c25 | 2817 | static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff *pp, int flush) |
25393d3f SK |
2818 | { |
2819 | if (PTR_ERR(pp) != -EINPROGRESS) | |
2820 | NAPI_GRO_CB(skb)->flush |= flush; | |
2821 | } | |
603d4cf8 | 2822 | static inline void skb_gro_flush_final_remcsum(struct sk_buff *skb, |
5cd3da4b | 2823 | struct sk_buff *pp, |
603d4cf8 SD |
2824 | int flush, |
2825 | struct gro_remcsum *grc) | |
2826 | { | |
2827 | if (PTR_ERR(pp) != -EINPROGRESS) { | |
2828 | NAPI_GRO_CB(skb)->flush |= flush; | |
2829 | skb_gro_remcsum_cleanup(skb, grc); | |
2830 | skb->remcsum_offload = 0; | |
2831 | } | |
2832 | } | |
25393d3f | 2833 | #else |
d4546c25 | 2834 | static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff *pp, int flush) |
5f114163 SK |
2835 | { |
2836 | NAPI_GRO_CB(skb)->flush |= flush; | |
2837 | } | |
603d4cf8 | 2838 | static inline void skb_gro_flush_final_remcsum(struct sk_buff *skb, |
5cd3da4b | 2839 | struct sk_buff *pp, |
603d4cf8 SD |
2840 | int flush, |
2841 | struct gro_remcsum *grc) | |
2842 | { | |
2843 | NAPI_GRO_CB(skb)->flush |= flush; | |
2844 | skb_gro_remcsum_cleanup(skb, grc); | |
2845 | skb->remcsum_offload = 0; | |
2846 | } | |
25393d3f | 2847 | #endif |
5f114163 | 2848 | |
0c4e8581 SH |
2849 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
2850 | unsigned short type, | |
3b04ddde | 2851 | const void *daddr, const void *saddr, |
95c96174 | 2852 | unsigned int len) |
0c4e8581 | 2853 | { |
f1ecfd5d | 2854 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 2855 | return 0; |
3b04ddde SH |
2856 | |
2857 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
2858 | } |
2859 | ||
b95cce35 SH |
2860 | static inline int dev_parse_header(const struct sk_buff *skb, |
2861 | unsigned char *haddr) | |
2862 | { | |
2863 | const struct net_device *dev = skb->dev; | |
2864 | ||
1b83336b | 2865 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 2866 | return 0; |
3b04ddde | 2867 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
2868 | } |
2869 | ||
2793a23a WB |
2870 | /* ll_header must have at least hard_header_len allocated */ |
2871 | static inline bool dev_validate_header(const struct net_device *dev, | |
2872 | char *ll_header, int len) | |
2873 | { | |
2874 | if (likely(len >= dev->hard_header_len)) | |
2875 | return true; | |
217e6fa2 WB |
2876 | if (len < dev->min_header_len) |
2877 | return false; | |
2793a23a WB |
2878 | |
2879 | if (capable(CAP_SYS_RAWIO)) { | |
2880 | memset(ll_header + len, 0, dev->hard_header_len - len); | |
2881 | return true; | |
2882 | } | |
2883 | ||
2884 | if (dev->header_ops && dev->header_ops->validate) | |
2885 | return dev->header_ops->validate(ll_header, len); | |
2886 | ||
2887 | return false; | |
2888 | } | |
2889 | ||
36fd633e AV |
2890 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, |
2891 | int len, int size); | |
f629d208 | 2892 | int register_gifconf(unsigned int family, gifconf_func_t *gifconf); |
1da177e4 LT |
2893 | static inline int unregister_gifconf(unsigned int family) |
2894 | { | |
2895 | return register_gifconf(family, NULL); | |
2896 | } | |
2897 | ||
99bbc707 | 2898 | #ifdef CONFIG_NET_FLOW_LIMIT |
5f121b9a | 2899 | #define FLOW_LIMIT_HISTORY (1 << 7) /* must be ^2 and !overflow buckets */ |
99bbc707 WB |
2900 | struct sd_flow_limit { |
2901 | u64 count; | |
2902 | unsigned int num_buckets; | |
2903 | unsigned int history_head; | |
2904 | u16 history[FLOW_LIMIT_HISTORY]; | |
2905 | u8 buckets[]; | |
2906 | }; | |
2907 | ||
2908 | extern int netdev_flow_limit_table_len; | |
2909 | #endif /* CONFIG_NET_FLOW_LIMIT */ | |
2910 | ||
1da177e4 | 2911 | /* |
5e82b4b2 | 2912 | * Incoming packets are placed on per-CPU queues |
1da177e4 | 2913 | */ |
d94d9fee | 2914 | struct softnet_data { |
1da177e4 | 2915 | struct list_head poll_list; |
6e7676c1 | 2916 | struct sk_buff_head process_queue; |
1da177e4 | 2917 | |
dee42870 | 2918 | /* stats */ |
cd7b5396 DM |
2919 | unsigned int processed; |
2920 | unsigned int time_squeeze; | |
cd7b5396 | 2921 | unsigned int received_rps; |
fd793d89 | 2922 | #ifdef CONFIG_RPS |
88751275 | 2923 | struct softnet_data *rps_ipi_list; |
4cdb1e2e ED |
2924 | #endif |
2925 | #ifdef CONFIG_NET_FLOW_LIMIT | |
2926 | struct sd_flow_limit __rcu *flow_limit; | |
2927 | #endif | |
2928 | struct Qdisc *output_queue; | |
2929 | struct Qdisc **output_queue_tailp; | |
2930 | struct sk_buff *completion_queue; | |
f53c7239 SK |
2931 | #ifdef CONFIG_XFRM_OFFLOAD |
2932 | struct sk_buff_head xfrm_backlog; | |
2933 | #endif | |
4cdb1e2e | 2934 | #ifdef CONFIG_RPS |
501e7ef5 ED |
2935 | /* input_queue_head should be written by cpu owning this struct, |
2936 | * and only read by other cpus. Worth using a cache line. | |
2937 | */ | |
2938 | unsigned int input_queue_head ____cacheline_aligned_in_smp; | |
2939 | ||
2940 | /* Elements below can be accessed between CPUs for RPS/RFS */ | |
966a9671 | 2941 | call_single_data_t csd ____cacheline_aligned_in_smp; |
88751275 ED |
2942 | struct softnet_data *rps_ipi_next; |
2943 | unsigned int cpu; | |
76cc8b13 | 2944 | unsigned int input_queue_tail; |
1e94d72f | 2945 | #endif |
95c96174 | 2946 | unsigned int dropped; |
0a9627f2 | 2947 | struct sk_buff_head input_pkt_queue; |
bea3348e | 2948 | struct napi_struct backlog; |
99bbc707 | 2949 | |
1da177e4 LT |
2950 | }; |
2951 | ||
76cc8b13 | 2952 | static inline void input_queue_head_incr(struct softnet_data *sd) |
fec5e652 TH |
2953 | { |
2954 | #ifdef CONFIG_RPS | |
76cc8b13 TH |
2955 | sd->input_queue_head++; |
2956 | #endif | |
2957 | } | |
2958 | ||
2959 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, | |
2960 | unsigned int *qtail) | |
2961 | { | |
2962 | #ifdef CONFIG_RPS | |
2963 | *qtail = ++sd->input_queue_tail; | |
fec5e652 TH |
2964 | #endif |
2965 | } | |
2966 | ||
0a9627f2 | 2967 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
1da177e4 | 2968 | |
f629d208 | 2969 | void __netif_schedule(struct Qdisc *q); |
46e5da40 | 2970 | void netif_schedule_queue(struct netdev_queue *txq); |
86d804e1 | 2971 | |
fd2ea0a7 DM |
2972 | static inline void netif_tx_schedule_all(struct net_device *dev) |
2973 | { | |
2974 | unsigned int i; | |
2975 | ||
2976 | for (i = 0; i < dev->num_tx_queues; i++) | |
2977 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
2978 | } | |
2979 | ||
f9a7cbbf | 2980 | static __always_inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
d29f749e | 2981 | { |
73466498 | 2982 | clear_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
2983 | } |
2984 | ||
bea3348e SH |
2985 | /** |
2986 | * netif_start_queue - allow transmit | |
2987 | * @dev: network device | |
2988 | * | |
2989 | * Allow upper layers to call the device hard_start_xmit routine. | |
2990 | */ | |
1da177e4 LT |
2991 | static inline void netif_start_queue(struct net_device *dev) |
2992 | { | |
e8a0464c | 2993 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
2994 | } |
2995 | ||
fd2ea0a7 DM |
2996 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
2997 | { | |
2998 | unsigned int i; | |
2999 | ||
3000 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3001 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
3002 | netif_tx_start_queue(txq); | |
3003 | } | |
3004 | } | |
3005 | ||
46e5da40 | 3006 | void netif_tx_wake_queue(struct netdev_queue *dev_queue); |
79d16385 | 3007 | |
d29f749e DJ |
3008 | /** |
3009 | * netif_wake_queue - restart transmit | |
3010 | * @dev: network device | |
3011 | * | |
3012 | * Allow upper layers to call the device hard_start_xmit routine. | |
3013 | * Used for flow control when transmit resources are available. | |
3014 | */ | |
79d16385 DM |
3015 | static inline void netif_wake_queue(struct net_device *dev) |
3016 | { | |
e8a0464c | 3017 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3018 | } |
3019 | ||
fd2ea0a7 DM |
3020 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
3021 | { | |
3022 | unsigned int i; | |
3023 | ||
3024 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3025 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
3026 | netif_tx_wake_queue(txq); | |
3027 | } | |
3028 | } | |
3029 | ||
f9a7cbbf | 3030 | static __always_inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
d29f749e | 3031 | { |
73466498 | 3032 | set_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3033 | } |
3034 | ||
bea3348e SH |
3035 | /** |
3036 | * netif_stop_queue - stop transmitted packets | |
3037 | * @dev: network device | |
3038 | * | |
3039 | * Stop upper layers calling the device hard_start_xmit routine. | |
3040 | * Used for flow control when transmit resources are unavailable. | |
3041 | */ | |
1da177e4 LT |
3042 | static inline void netif_stop_queue(struct net_device *dev) |
3043 | { | |
e8a0464c | 3044 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3045 | } |
3046 | ||
a2029240 | 3047 | void netif_tx_stop_all_queues(struct net_device *dev); |
fd2ea0a7 | 3048 | |
4d29515f | 3049 | static inline bool netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
d29f749e | 3050 | { |
73466498 | 3051 | return test_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3052 | } |
3053 | ||
bea3348e SH |
3054 | /** |
3055 | * netif_queue_stopped - test if transmit queue is flowblocked | |
3056 | * @dev: network device | |
3057 | * | |
3058 | * Test if transmit queue on device is currently unable to send. | |
3059 | */ | |
4d29515f | 3060 | static inline bool netif_queue_stopped(const struct net_device *dev) |
1da177e4 | 3061 | { |
e8a0464c | 3062 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3063 | } |
3064 | ||
4d29515f | 3065 | static inline bool netif_xmit_stopped(const struct netdev_queue *dev_queue) |
c3f26a26 | 3066 | { |
73466498 TH |
3067 | return dev_queue->state & QUEUE_STATE_ANY_XOFF; |
3068 | } | |
3069 | ||
8e2f1a63 DB |
3070 | static inline bool |
3071 | netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue) | |
73466498 TH |
3072 | { |
3073 | return dev_queue->state & QUEUE_STATE_ANY_XOFF_OR_FROZEN; | |
3074 | } | |
3075 | ||
8e2f1a63 DB |
3076 | static inline bool |
3077 | netif_xmit_frozen_or_drv_stopped(const struct netdev_queue *dev_queue) | |
3078 | { | |
3079 | return dev_queue->state & QUEUE_STATE_DRV_XOFF_OR_FROZEN; | |
3080 | } | |
3081 | ||
53511453 ED |
3082 | /** |
3083 | * netdev_txq_bql_enqueue_prefetchw - prefetch bql data for write | |
3084 | * @dev_queue: pointer to transmit queue | |
3085 | * | |
3086 | * BQL enabled drivers might use this helper in their ndo_start_xmit(), | |
5e82b4b2 | 3087 | * to give appropriate hint to the CPU. |
53511453 ED |
3088 | */ |
3089 | static inline void netdev_txq_bql_enqueue_prefetchw(struct netdev_queue *dev_queue) | |
3090 | { | |
3091 | #ifdef CONFIG_BQL | |
3092 | prefetchw(&dev_queue->dql.num_queued); | |
3093 | #endif | |
3094 | } | |
3095 | ||
3096 | /** | |
3097 | * netdev_txq_bql_complete_prefetchw - prefetch bql data for write | |
3098 | * @dev_queue: pointer to transmit queue | |
3099 | * | |
3100 | * BQL enabled drivers might use this helper in their TX completion path, | |
5e82b4b2 | 3101 | * to give appropriate hint to the CPU. |
53511453 ED |
3102 | */ |
3103 | static inline void netdev_txq_bql_complete_prefetchw(struct netdev_queue *dev_queue) | |
3104 | { | |
3105 | #ifdef CONFIG_BQL | |
3106 | prefetchw(&dev_queue->dql.limit); | |
3107 | #endif | |
3108 | } | |
3109 | ||
c5d67bd7 TH |
3110 | static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, |
3111 | unsigned int bytes) | |
3112 | { | |
114cf580 TH |
3113 | #ifdef CONFIG_BQL |
3114 | dql_queued(&dev_queue->dql, bytes); | |
b37c0fbe AD |
3115 | |
3116 | if (likely(dql_avail(&dev_queue->dql) >= 0)) | |
3117 | return; | |
3118 | ||
3119 | set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
3120 | ||
3121 | /* | |
3122 | * The XOFF flag must be set before checking the dql_avail below, | |
3123 | * because in netdev_tx_completed_queue we update the dql_completed | |
3124 | * before checking the XOFF flag. | |
3125 | */ | |
3126 | smp_mb(); | |
3127 | ||
3128 | /* check again in case another CPU has just made room avail */ | |
3129 | if (unlikely(dql_avail(&dev_queue->dql) >= 0)) | |
3130 | clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
114cf580 | 3131 | #endif |
c5d67bd7 TH |
3132 | } |
3133 | ||
0042d0c8 FF |
3134 | /** |
3135 | * netdev_sent_queue - report the number of bytes queued to hardware | |
3136 | * @dev: network device | |
3137 | * @bytes: number of bytes queued to the hardware device queue | |
3138 | * | |
3139 | * Report the number of bytes queued for sending/completion to the network | |
3140 | * device hardware queue. @bytes should be a good approximation and should | |
3141 | * exactly match netdev_completed_queue() @bytes | |
3142 | */ | |
c5d67bd7 TH |
3143 | static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes) |
3144 | { | |
3145 | netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes); | |
3146 | } | |
3147 | ||
3148 | static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue, | |
95c96174 | 3149 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 | 3150 | { |
114cf580 | 3151 | #ifdef CONFIG_BQL |
b37c0fbe AD |
3152 | if (unlikely(!bytes)) |
3153 | return; | |
3154 | ||
3155 | dql_completed(&dev_queue->dql, bytes); | |
3156 | ||
3157 | /* | |
3158 | * Without the memory barrier there is a small possiblity that | |
3159 | * netdev_tx_sent_queue will miss the update and cause the queue to | |
3160 | * be stopped forever | |
3161 | */ | |
3162 | smp_mb(); | |
3163 | ||
3164 | if (dql_avail(&dev_queue->dql) < 0) | |
3165 | return; | |
3166 | ||
3167 | if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state)) | |
3168 | netif_schedule_queue(dev_queue); | |
114cf580 | 3169 | #endif |
c5d67bd7 TH |
3170 | } |
3171 | ||
0042d0c8 FF |
3172 | /** |
3173 | * netdev_completed_queue - report bytes and packets completed by device | |
3174 | * @dev: network device | |
3175 | * @pkts: actual number of packets sent over the medium | |
3176 | * @bytes: actual number of bytes sent over the medium | |
3177 | * | |
3178 | * Report the number of bytes and packets transmitted by the network device | |
3179 | * hardware queue over the physical medium, @bytes must exactly match the | |
3180 | * @bytes amount passed to netdev_sent_queue() | |
3181 | */ | |
c5d67bd7 | 3182 | static inline void netdev_completed_queue(struct net_device *dev, |
95c96174 | 3183 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 TH |
3184 | { |
3185 | netdev_tx_completed_queue(netdev_get_tx_queue(dev, 0), pkts, bytes); | |
3186 | } | |
3187 | ||
3188 | static inline void netdev_tx_reset_queue(struct netdev_queue *q) | |
3189 | { | |
114cf580 | 3190 | #ifdef CONFIG_BQL |
5c490354 | 3191 | clear_bit(__QUEUE_STATE_STACK_XOFF, &q->state); |
114cf580 TH |
3192 | dql_reset(&q->dql); |
3193 | #endif | |
c5d67bd7 TH |
3194 | } |
3195 | ||
0042d0c8 FF |
3196 | /** |
3197 | * netdev_reset_queue - reset the packets and bytes count of a network device | |
3198 | * @dev_queue: network device | |
3199 | * | |
3200 | * Reset the bytes and packet count of a network device and clear the | |
3201 | * software flow control OFF bit for this network device | |
3202 | */ | |
c5d67bd7 TH |
3203 | static inline void netdev_reset_queue(struct net_device *dev_queue) |
3204 | { | |
3205 | netdev_tx_reset_queue(netdev_get_tx_queue(dev_queue, 0)); | |
c3f26a26 DM |
3206 | } |
3207 | ||
b9507bda DB |
3208 | /** |
3209 | * netdev_cap_txqueue - check if selected tx queue exceeds device queues | |
3210 | * @dev: network device | |
3211 | * @queue_index: given tx queue index | |
3212 | * | |
3213 | * Returns 0 if given tx queue index >= number of device tx queues, | |
3214 | * otherwise returns the originally passed tx queue index. | |
3215 | */ | |
3216 | static inline u16 netdev_cap_txqueue(struct net_device *dev, u16 queue_index) | |
3217 | { | |
3218 | if (unlikely(queue_index >= dev->real_num_tx_queues)) { | |
3219 | net_warn_ratelimited("%s selects TX queue %d, but real number of TX queues is %d\n", | |
3220 | dev->name, queue_index, | |
3221 | dev->real_num_tx_queues); | |
3222 | return 0; | |
3223 | } | |
3224 | ||
3225 | return queue_index; | |
3226 | } | |
3227 | ||
bea3348e SH |
3228 | /** |
3229 | * netif_running - test if up | |
3230 | * @dev: network device | |
3231 | * | |
3232 | * Test if the device has been brought up. | |
3233 | */ | |
4d29515f | 3234 | static inline bool netif_running(const struct net_device *dev) |
1da177e4 LT |
3235 | { |
3236 | return test_bit(__LINK_STATE_START, &dev->state); | |
3237 | } | |
3238 | ||
f25f4e44 | 3239 | /* |
5e82b4b2 | 3240 | * Routines to manage the subqueues on a device. We only need start, |
f25f4e44 PWJ |
3241 | * stop, and a check if it's stopped. All other device management is |
3242 | * done at the overall netdevice level. | |
3243 | * Also test the device if we're multiqueue. | |
3244 | */ | |
bea3348e SH |
3245 | |
3246 | /** | |
3247 | * netif_start_subqueue - allow sending packets on subqueue | |
3248 | * @dev: network device | |
3249 | * @queue_index: sub queue index | |
3250 | * | |
3251 | * Start individual transmit queue of a device with multiple transmit queues. | |
3252 | */ | |
f25f4e44 PWJ |
3253 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
3254 | { | |
fd2ea0a7 | 3255 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3256 | |
3257 | netif_tx_start_queue(txq); | |
f25f4e44 PWJ |
3258 | } |
3259 | ||
bea3348e SH |
3260 | /** |
3261 | * netif_stop_subqueue - stop sending packets on subqueue | |
3262 | * @dev: network device | |
3263 | * @queue_index: sub queue index | |
3264 | * | |
3265 | * Stop individual transmit queue of a device with multiple transmit queues. | |
3266 | */ | |
f25f4e44 PWJ |
3267 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
3268 | { | |
fd2ea0a7 | 3269 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f | 3270 | netif_tx_stop_queue(txq); |
f25f4e44 PWJ |
3271 | } |
3272 | ||
bea3348e SH |
3273 | /** |
3274 | * netif_subqueue_stopped - test status of subqueue | |
3275 | * @dev: network device | |
3276 | * @queue_index: sub queue index | |
3277 | * | |
3278 | * Check individual transmit queue of a device with multiple transmit queues. | |
3279 | */ | |
4d29515f DM |
3280 | static inline bool __netif_subqueue_stopped(const struct net_device *dev, |
3281 | u16 queue_index) | |
f25f4e44 | 3282 | { |
fd2ea0a7 | 3283 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3284 | |
3285 | return netif_tx_queue_stopped(txq); | |
f25f4e44 PWJ |
3286 | } |
3287 | ||
4d29515f DM |
3288 | static inline bool netif_subqueue_stopped(const struct net_device *dev, |
3289 | struct sk_buff *skb) | |
668f895a PE |
3290 | { |
3291 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
3292 | } | |
bea3348e | 3293 | |
738b35cc FF |
3294 | /** |
3295 | * netif_wake_subqueue - allow sending packets on subqueue | |
3296 | * @dev: network device | |
3297 | * @queue_index: sub queue index | |
3298 | * | |
3299 | * Resume individual transmit queue of a device with multiple transmit queues. | |
3300 | */ | |
3301 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) | |
3302 | { | |
3303 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); | |
3304 | ||
3305 | netif_tx_wake_queue(txq); | |
3306 | } | |
f25f4e44 | 3307 | |
537c00de | 3308 | #ifdef CONFIG_XPS |
53af53ae | 3309 | int netif_set_xps_queue(struct net_device *dev, const struct cpumask *mask, |
f629d208 | 3310 | u16 index); |
80d19669 AN |
3311 | int __netif_set_xps_queue(struct net_device *dev, const unsigned long *mask, |
3312 | u16 index, bool is_rxqs_map); | |
3313 | ||
3314 | /** | |
3315 | * netif_attr_test_mask - Test a CPU or Rx queue set in a mask | |
3316 | * @j: CPU/Rx queue index | |
3317 | * @mask: bitmask of all cpus/rx queues | |
3318 | * @nr_bits: number of bits in the bitmask | |
3319 | * | |
3320 | * Test if a CPU or Rx queue index is set in a mask of all CPU/Rx queues. | |
3321 | */ | |
3322 | static inline bool netif_attr_test_mask(unsigned long j, | |
3323 | const unsigned long *mask, | |
3324 | unsigned int nr_bits) | |
3325 | { | |
3326 | cpu_max_bits_warn(j, nr_bits); | |
3327 | return test_bit(j, mask); | |
3328 | } | |
3329 | ||
3330 | /** | |
3331 | * netif_attr_test_online - Test for online CPU/Rx queue | |
3332 | * @j: CPU/Rx queue index | |
3333 | * @online_mask: bitmask for CPUs/Rx queues that are online | |
3334 | * @nr_bits: number of bits in the bitmask | |
3335 | * | |
3336 | * Returns true if a CPU/Rx queue is online. | |
3337 | */ | |
3338 | static inline bool netif_attr_test_online(unsigned long j, | |
3339 | const unsigned long *online_mask, | |
3340 | unsigned int nr_bits) | |
3341 | { | |
3342 | cpu_max_bits_warn(j, nr_bits); | |
3343 | ||
3344 | if (online_mask) | |
3345 | return test_bit(j, online_mask); | |
3346 | ||
3347 | return (j < nr_bits); | |
3348 | } | |
3349 | ||
3350 | /** | |
3351 | * netif_attrmask_next - get the next CPU/Rx queue in a cpu/Rx queues mask | |
3352 | * @n: CPU/Rx queue index | |
3353 | * @srcp: the cpumask/Rx queue mask pointer | |
3354 | * @nr_bits: number of bits in the bitmask | |
3355 | * | |
3356 | * Returns >= nr_bits if no further CPUs/Rx queues set. | |
3357 | */ | |
3358 | static inline unsigned int netif_attrmask_next(int n, const unsigned long *srcp, | |
3359 | unsigned int nr_bits) | |
3360 | { | |
3361 | /* -1 is a legal arg here. */ | |
3362 | if (n != -1) | |
3363 | cpu_max_bits_warn(n, nr_bits); | |
3364 | ||
3365 | if (srcp) | |
3366 | return find_next_bit(srcp, nr_bits, n + 1); | |
3367 | ||
3368 | return n + 1; | |
3369 | } | |
3370 | ||
3371 | /** | |
3372 | * netif_attrmask_next_and - get the next CPU/Rx queue in *src1p & *src2p | |
3373 | * @n: CPU/Rx queue index | |
3374 | * @src1p: the first CPUs/Rx queues mask pointer | |
3375 | * @src2p: the second CPUs/Rx queues mask pointer | |
3376 | * @nr_bits: number of bits in the bitmask | |
3377 | * | |
3378 | * Returns >= nr_bits if no further CPUs/Rx queues set in both. | |
3379 | */ | |
3380 | static inline int netif_attrmask_next_and(int n, const unsigned long *src1p, | |
3381 | const unsigned long *src2p, | |
3382 | unsigned int nr_bits) | |
3383 | { | |
3384 | /* -1 is a legal arg here. */ | |
3385 | if (n != -1) | |
3386 | cpu_max_bits_warn(n, nr_bits); | |
3387 | ||
3388 | if (src1p && src2p) | |
3389 | return find_next_and_bit(src1p, src2p, nr_bits, n + 1); | |
3390 | else if (src1p) | |
3391 | return find_next_bit(src1p, nr_bits, n + 1); | |
3392 | else if (src2p) | |
3393 | return find_next_bit(src2p, nr_bits, n + 1); | |
3394 | ||
3395 | return n + 1; | |
3396 | } | |
537c00de AD |
3397 | #else |
3398 | static inline int netif_set_xps_queue(struct net_device *dev, | |
3573540c | 3399 | const struct cpumask *mask, |
537c00de AD |
3400 | u16 index) |
3401 | { | |
3402 | return 0; | |
3403 | } | |
3404 | #endif | |
3405 | ||
bea3348e SH |
3406 | /** |
3407 | * netif_is_multiqueue - test if device has multiple transmit queues | |
3408 | * @dev: network device | |
3409 | * | |
3410 | * Check if device has multiple transmit queues | |
bea3348e | 3411 | */ |
4d29515f | 3412 | static inline bool netif_is_multiqueue(const struct net_device *dev) |
f25f4e44 | 3413 | { |
a02cec21 | 3414 | return dev->num_tx_queues > 1; |
f25f4e44 | 3415 | } |
1da177e4 | 3416 | |
f629d208 | 3417 | int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq); |
f0796d5c | 3418 | |
a953be53 | 3419 | #ifdef CONFIG_SYSFS |
f629d208 | 3420 | int netif_set_real_num_rx_queues(struct net_device *dev, unsigned int rxq); |
62fe0b40 BH |
3421 | #else |
3422 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, | |
3423 | unsigned int rxq) | |
3424 | { | |
3425 | return 0; | |
3426 | } | |
3427 | #endif | |
3428 | ||
65073a67 DB |
3429 | static inline struct netdev_rx_queue * |
3430 | __netif_get_rx_queue(struct net_device *dev, unsigned int rxq) | |
3431 | { | |
3432 | return dev->_rx + rxq; | |
3433 | } | |
3434 | ||
a953be53 MD |
3435 | #ifdef CONFIG_SYSFS |
3436 | static inline unsigned int get_netdev_rx_queue_index( | |
3437 | struct netdev_rx_queue *queue) | |
3438 | { | |
3439 | struct net_device *dev = queue->dev; | |
3440 | int index = queue - dev->_rx; | |
3441 | ||
3442 | BUG_ON(index >= dev->num_rx_queues); | |
3443 | return index; | |
3444 | } | |
3445 | #endif | |
3446 | ||
16917b87 | 3447 | #define DEFAULT_MAX_NUM_RSS_QUEUES (8) |
f629d208 | 3448 | int netif_get_num_default_rss_queues(void); |
16917b87 | 3449 | |
e6247027 ED |
3450 | enum skb_free_reason { |
3451 | SKB_REASON_CONSUMED, | |
3452 | SKB_REASON_DROPPED, | |
3453 | }; | |
3454 | ||
3455 | void __dev_kfree_skb_irq(struct sk_buff *skb, enum skb_free_reason reason); | |
3456 | void __dev_kfree_skb_any(struct sk_buff *skb, enum skb_free_reason reason); | |
1da177e4 | 3457 | |
e6247027 ED |
3458 | /* |
3459 | * It is not allowed to call kfree_skb() or consume_skb() from hardware | |
3460 | * interrupt context or with hardware interrupts being disabled. | |
3461 | * (in_irq() || irqs_disabled()) | |
3462 | * | |
3463 | * We provide four helpers that can be used in following contexts : | |
3464 | * | |
3465 | * dev_kfree_skb_irq(skb) when caller drops a packet from irq context, | |
3466 | * replacing kfree_skb(skb) | |
3467 | * | |
3468 | * dev_consume_skb_irq(skb) when caller consumes a packet from irq context. | |
3469 | * Typically used in place of consume_skb(skb) in TX completion path | |
3470 | * | |
3471 | * dev_kfree_skb_any(skb) when caller doesn't know its current irq context, | |
3472 | * replacing kfree_skb(skb) | |
3473 | * | |
3474 | * dev_consume_skb_any(skb) when caller doesn't know its current irq context, | |
3475 | * and consumed a packet. Used in place of consume_skb(skb) | |
1da177e4 | 3476 | */ |
e6247027 ED |
3477 | static inline void dev_kfree_skb_irq(struct sk_buff *skb) |
3478 | { | |
3479 | __dev_kfree_skb_irq(skb, SKB_REASON_DROPPED); | |
3480 | } | |
3481 | ||
3482 | static inline void dev_consume_skb_irq(struct sk_buff *skb) | |
3483 | { | |
3484 | __dev_kfree_skb_irq(skb, SKB_REASON_CONSUMED); | |
3485 | } | |
3486 | ||
3487 | static inline void dev_kfree_skb_any(struct sk_buff *skb) | |
3488 | { | |
3489 | __dev_kfree_skb_any(skb, SKB_REASON_DROPPED); | |
3490 | } | |
3491 | ||
3492 | static inline void dev_consume_skb_any(struct sk_buff *skb) | |
3493 | { | |
3494 | __dev_kfree_skb_any(skb, SKB_REASON_CONSUMED); | |
3495 | } | |
1da177e4 | 3496 | |
7c497478 JW |
3497 | void generic_xdp_tx(struct sk_buff *skb, struct bpf_prog *xdp_prog); |
3498 | int do_xdp_generic(struct bpf_prog *xdp_prog, struct sk_buff *skb); | |
f629d208 JP |
3499 | int netif_rx(struct sk_buff *skb); |
3500 | int netif_rx_ni(struct sk_buff *skb); | |
04eb4489 | 3501 | int netif_receive_skb(struct sk_buff *skb); |
1c601d82 | 3502 | int netif_receive_skb_core(struct sk_buff *skb); |
f6ad8c1b | 3503 | void netif_receive_skb_list(struct list_head *head); |
f629d208 JP |
3504 | gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb); |
3505 | void napi_gro_flush(struct napi_struct *napi, bool flush_old); | |
3506 | struct sk_buff *napi_get_frags(struct napi_struct *napi); | |
3507 | gro_result_t napi_gro_frags(struct napi_struct *napi); | |
bf5a755f JC |
3508 | struct packet_offload *gro_find_receive_by_type(__be16 type); |
3509 | struct packet_offload *gro_find_complete_by_type(__be16 type); | |
76620aaf HX |
3510 | |
3511 | static inline void napi_free_frags(struct napi_struct *napi) | |
3512 | { | |
3513 | kfree_skb(napi->skb); | |
3514 | napi->skb = NULL; | |
3515 | } | |
3516 | ||
24b27fc4 | 3517 | bool netdev_is_rx_handler_busy(struct net_device *dev); |
f629d208 JP |
3518 | int netdev_rx_handler_register(struct net_device *dev, |
3519 | rx_handler_func_t *rx_handler, | |
3520 | void *rx_handler_data); | |
3521 | void netdev_rx_handler_unregister(struct net_device *dev); | |
3522 | ||
3523 | bool dev_valid_name(const char *name); | |
44c02a2c AV |
3524 | int dev_ioctl(struct net *net, unsigned int cmd, struct ifreq *ifr, |
3525 | bool *need_copyout); | |
36fd633e | 3526 | int dev_ifconf(struct net *net, struct ifconf *, int); |
f629d208 JP |
3527 | int dev_ethtool(struct net *net, struct ifreq *); |
3528 | unsigned int dev_get_flags(const struct net_device *); | |
3529 | int __dev_change_flags(struct net_device *, unsigned int flags); | |
3530 | int dev_change_flags(struct net_device *, unsigned int); | |
cb178190 DM |
3531 | void __dev_notify_flags(struct net_device *, unsigned int old_flags, |
3532 | unsigned int gchanges); | |
f629d208 JP |
3533 | int dev_change_name(struct net_device *, const char *); |
3534 | int dev_set_alias(struct net_device *, const char *, size_t); | |
6c557001 | 3535 | int dev_get_alias(const struct net_device *, char *, size_t); |
f629d208 | 3536 | int dev_change_net_namespace(struct net_device *, struct net *, const char *); |
f51048c3 | 3537 | int __dev_set_mtu(struct net_device *, int); |
f629d208 | 3538 | int dev_set_mtu(struct net_device *, int); |
6a643ddb | 3539 | int dev_change_tx_queue_len(struct net_device *, unsigned long); |
f629d208 JP |
3540 | void dev_set_group(struct net_device *, int); |
3541 | int dev_set_mac_address(struct net_device *, struct sockaddr *); | |
3542 | int dev_change_carrier(struct net_device *, bool new_carrier); | |
3543 | int dev_get_phys_port_id(struct net_device *dev, | |
02637fce | 3544 | struct netdev_phys_item_id *ppid); |
db24a904 DA |
3545 | int dev_get_phys_port_name(struct net_device *dev, |
3546 | char *name, size_t len); | |
d746d707 | 3547 | int dev_change_proto_down(struct net_device *dev, bool proto_down); |
f53c7239 | 3548 | struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev, bool *again); |
ce93718f DM |
3549 | struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, |
3550 | struct netdev_queue *txq, int *ret); | |
d67b9cd2 | 3551 | |
f4e63525 | 3552 | typedef int (*bpf_op_t)(struct net_device *dev, struct netdev_bpf *bpf); |
d67b9cd2 DB |
3553 | int dev_change_xdp_fd(struct net_device *dev, struct netlink_ext_ack *extack, |
3554 | int fd, u32 flags); | |
118b4aa2 JK |
3555 | void __dev_xdp_query(struct net_device *dev, bpf_op_t xdp_op, |
3556 | struct netdev_bpf *xdp); | |
d67b9cd2 | 3557 | |
a0265d28 | 3558 | int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
f629d208 | 3559 | int dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
f4b05d27 NA |
3560 | bool is_skb_forwardable(const struct net_device *dev, |
3561 | const struct sk_buff *skb); | |
1da177e4 | 3562 | |
4e3264d2 MKL |
3563 | static __always_inline int ____dev_forward_skb(struct net_device *dev, |
3564 | struct sk_buff *skb) | |
3565 | { | |
3566 | if (skb_orphan_frags(skb, GFP_ATOMIC) || | |
3567 | unlikely(!is_skb_forwardable(dev, skb))) { | |
3568 | atomic_long_inc(&dev->rx_dropped); | |
3569 | kfree_skb(skb); | |
3570 | return NET_RX_DROP; | |
3571 | } | |
3572 | ||
3573 | skb_scrub_packet(skb, true); | |
3574 | skb->priority = 0; | |
3575 | return 0; | |
3576 | } | |
3577 | ||
74b20582 DA |
3578 | void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev); |
3579 | ||
20380731 | 3580 | extern int netdev_budget; |
7acf8a1e | 3581 | extern unsigned int netdev_budget_usecs; |
1da177e4 LT |
3582 | |
3583 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
f629d208 | 3584 | void netdev_run_todo(void); |
1da177e4 | 3585 | |
bea3348e SH |
3586 | /** |
3587 | * dev_put - release reference to device | |
3588 | * @dev: network device | |
3589 | * | |
9ef4429b | 3590 | * Release reference to device to allow it to be freed. |
bea3348e | 3591 | */ |
1da177e4 LT |
3592 | static inline void dev_put(struct net_device *dev) |
3593 | { | |
933393f5 | 3594 | this_cpu_dec(*dev->pcpu_refcnt); |
1da177e4 LT |
3595 | } |
3596 | ||
bea3348e SH |
3597 | /** |
3598 | * dev_hold - get reference to device | |
3599 | * @dev: network device | |
3600 | * | |
9ef4429b | 3601 | * Hold reference to device to keep it from being freed. |
bea3348e | 3602 | */ |
15333061 SH |
3603 | static inline void dev_hold(struct net_device *dev) |
3604 | { | |
933393f5 | 3605 | this_cpu_inc(*dev->pcpu_refcnt); |
15333061 | 3606 | } |
1da177e4 LT |
3607 | |
3608 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
3609 | * and _off may be called from IRQ context, but it is caller | |
3610 | * who is responsible for serialization of these calls. | |
b00055aa SR |
3611 | * |
3612 | * The name carrier is inappropriate, these functions should really be | |
3613 | * called netif_lowerlayer_*() because they represent the state of any | |
3614 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
3615 | */ |
3616 | ||
f629d208 JP |
3617 | void linkwatch_init_dev(struct net_device *dev); |
3618 | void linkwatch_fire_event(struct net_device *dev); | |
3619 | void linkwatch_forget_dev(struct net_device *dev); | |
1da177e4 | 3620 | |
bea3348e SH |
3621 | /** |
3622 | * netif_carrier_ok - test if carrier present | |
3623 | * @dev: network device | |
3624 | * | |
3625 | * Check if carrier is present on device | |
3626 | */ | |
4d29515f | 3627 | static inline bool netif_carrier_ok(const struct net_device *dev) |
1da177e4 LT |
3628 | { |
3629 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
3630 | } | |
3631 | ||
f629d208 | 3632 | unsigned long dev_trans_start(struct net_device *dev); |
9d21493b | 3633 | |
f629d208 | 3634 | void __netdev_watchdog_up(struct net_device *dev); |
1da177e4 | 3635 | |
f629d208 | 3636 | void netif_carrier_on(struct net_device *dev); |
1da177e4 | 3637 | |
f629d208 | 3638 | void netif_carrier_off(struct net_device *dev); |
1da177e4 | 3639 | |
bea3348e SH |
3640 | /** |
3641 | * netif_dormant_on - mark device as dormant. | |
3642 | * @dev: network device | |
3643 | * | |
3644 | * Mark device as dormant (as per RFC2863). | |
3645 | * | |
3646 | * The dormant state indicates that the relevant interface is not | |
3647 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
3648 | * in a "pending" state, waiting for some external event. For "on- | |
3649 | * demand" interfaces, this new state identifies the situation where the | |
3650 | * interface is waiting for events to place it in the up state. | |
bea3348e | 3651 | */ |
b00055aa SR |
3652 | static inline void netif_dormant_on(struct net_device *dev) |
3653 | { | |
3654 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
3655 | linkwatch_fire_event(dev); | |
3656 | } | |
3657 | ||
bea3348e SH |
3658 | /** |
3659 | * netif_dormant_off - set device as not dormant. | |
3660 | * @dev: network device | |
3661 | * | |
3662 | * Device is not in dormant state. | |
3663 | */ | |
b00055aa SR |
3664 | static inline void netif_dormant_off(struct net_device *dev) |
3665 | { | |
3666 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
3667 | linkwatch_fire_event(dev); | |
3668 | } | |
3669 | ||
bea3348e | 3670 | /** |
8ecbc40a | 3671 | * netif_dormant - test if device is dormant |
bea3348e SH |
3672 | * @dev: network device |
3673 | * | |
8ecbc40a | 3674 | * Check if device is dormant. |
bea3348e | 3675 | */ |
4d29515f | 3676 | static inline bool netif_dormant(const struct net_device *dev) |
b00055aa SR |
3677 | { |
3678 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
3679 | } | |
3680 | ||
3681 | ||
bea3348e SH |
3682 | /** |
3683 | * netif_oper_up - test if device is operational | |
3684 | * @dev: network device | |
3685 | * | |
3686 | * Check if carrier is operational | |
3687 | */ | |
4d29515f | 3688 | static inline bool netif_oper_up(const struct net_device *dev) |
d94d9fee | 3689 | { |
b00055aa SR |
3690 | return (dev->operstate == IF_OPER_UP || |
3691 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
3692 | } | |
3693 | ||
bea3348e SH |
3694 | /** |
3695 | * netif_device_present - is device available or removed | |
3696 | * @dev: network device | |
3697 | * | |
3698 | * Check if device has not been removed from system. | |
3699 | */ | |
4d29515f | 3700 | static inline bool netif_device_present(struct net_device *dev) |
1da177e4 LT |
3701 | { |
3702 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
3703 | } | |
3704 | ||
f629d208 | 3705 | void netif_device_detach(struct net_device *dev); |
1da177e4 | 3706 | |
f629d208 | 3707 | void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
3708 | |
3709 | /* | |
3710 | * Network interface message level settings | |
3711 | */ | |
1da177e4 LT |
3712 | |
3713 | enum { | |
3714 | NETIF_MSG_DRV = 0x0001, | |
3715 | NETIF_MSG_PROBE = 0x0002, | |
3716 | NETIF_MSG_LINK = 0x0004, | |
3717 | NETIF_MSG_TIMER = 0x0008, | |
3718 | NETIF_MSG_IFDOWN = 0x0010, | |
3719 | NETIF_MSG_IFUP = 0x0020, | |
3720 | NETIF_MSG_RX_ERR = 0x0040, | |
3721 | NETIF_MSG_TX_ERR = 0x0080, | |
3722 | NETIF_MSG_TX_QUEUED = 0x0100, | |
3723 | NETIF_MSG_INTR = 0x0200, | |
3724 | NETIF_MSG_TX_DONE = 0x0400, | |
3725 | NETIF_MSG_RX_STATUS = 0x0800, | |
3726 | NETIF_MSG_PKTDATA = 0x1000, | |
3727 | NETIF_MSG_HW = 0x2000, | |
3728 | NETIF_MSG_WOL = 0x4000, | |
3729 | }; | |
3730 | ||
3731 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
3732 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
3733 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
3734 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
3735 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
3736 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
3737 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
3738 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
3739 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
3740 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
3741 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
3742 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
3743 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
3744 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
3745 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
3746 | ||
3747 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
3748 | { | |
3749 | /* use default */ | |
3750 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
3751 | return default_msg_enable_bits; | |
3752 | if (debug_value == 0) /* no output */ | |
3753 | return 0; | |
3754 | /* set low N bits */ | |
3755 | return (1 << debug_value) - 1; | |
3756 | } | |
3757 | ||
c773e847 | 3758 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 3759 | { |
c773e847 DM |
3760 | spin_lock(&txq->_xmit_lock); |
3761 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
3762 | } |
3763 | ||
5a717f4f MT |
3764 | static inline bool __netif_tx_acquire(struct netdev_queue *txq) |
3765 | { | |
3766 | __acquire(&txq->_xmit_lock); | |
3767 | return true; | |
3768 | } | |
3769 | ||
3770 | static inline void __netif_tx_release(struct netdev_queue *txq) | |
3771 | { | |
3772 | __release(&txq->_xmit_lock); | |
3773 | } | |
3774 | ||
fd2ea0a7 DM |
3775 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
3776 | { | |
3777 | spin_lock_bh(&txq->_xmit_lock); | |
3778 | txq->xmit_lock_owner = smp_processor_id(); | |
3779 | } | |
3780 | ||
4d29515f | 3781 | static inline bool __netif_tx_trylock(struct netdev_queue *txq) |
c3f26a26 | 3782 | { |
4d29515f | 3783 | bool ok = spin_trylock(&txq->_xmit_lock); |
c3f26a26 DM |
3784 | if (likely(ok)) |
3785 | txq->xmit_lock_owner = smp_processor_id(); | |
3786 | return ok; | |
3787 | } | |
3788 | ||
3789 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
3790 | { | |
3791 | txq->xmit_lock_owner = -1; | |
3792 | spin_unlock(&txq->_xmit_lock); | |
3793 | } | |
3794 | ||
3795 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
3796 | { | |
3797 | txq->xmit_lock_owner = -1; | |
3798 | spin_unlock_bh(&txq->_xmit_lock); | |
3799 | } | |
3800 | ||
08baf561 ED |
3801 | static inline void txq_trans_update(struct netdev_queue *txq) |
3802 | { | |
3803 | if (txq->xmit_lock_owner != -1) | |
3804 | txq->trans_start = jiffies; | |
3805 | } | |
3806 | ||
ba162f8e FW |
3807 | /* legacy drivers only, netdev_start_xmit() sets txq->trans_start */ |
3808 | static inline void netif_trans_update(struct net_device *dev) | |
3809 | { | |
9b36627a FW |
3810 | struct netdev_queue *txq = netdev_get_tx_queue(dev, 0); |
3811 | ||
3812 | if (txq->trans_start != jiffies) | |
3813 | txq->trans_start = jiffies; | |
ba162f8e FW |
3814 | } |
3815 | ||
d29f749e DJ |
3816 | /** |
3817 | * netif_tx_lock - grab network device transmit lock | |
3818 | * @dev: network device | |
d29f749e DJ |
3819 | * |
3820 | * Get network device transmit lock | |
3821 | */ | |
22dd7495 JHS |
3822 | static inline void netif_tx_lock(struct net_device *dev) |
3823 | { | |
e8a0464c | 3824 | unsigned int i; |
c3f26a26 | 3825 | int cpu; |
c773e847 | 3826 | |
c3f26a26 DM |
3827 | spin_lock(&dev->tx_global_lock); |
3828 | cpu = smp_processor_id(); | |
e8a0464c DM |
3829 | for (i = 0; i < dev->num_tx_queues; i++) { |
3830 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
3831 | |
3832 | /* We are the only thread of execution doing a | |
3833 | * freeze, but we have to grab the _xmit_lock in | |
3834 | * order to synchronize with threads which are in | |
3835 | * the ->hard_start_xmit() handler and already | |
3836 | * checked the frozen bit. | |
3837 | */ | |
e8a0464c | 3838 | __netif_tx_lock(txq, cpu); |
c3f26a26 DM |
3839 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
3840 | __netif_tx_unlock(txq); | |
e8a0464c | 3841 | } |
932ff279 HX |
3842 | } |
3843 | ||
3844 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
3845 | { | |
e8a0464c DM |
3846 | local_bh_disable(); |
3847 | netif_tx_lock(dev); | |
932ff279 HX |
3848 | } |
3849 | ||
932ff279 HX |
3850 | static inline void netif_tx_unlock(struct net_device *dev) |
3851 | { | |
e8a0464c DM |
3852 | unsigned int i; |
3853 | ||
3854 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3855 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c773e847 | 3856 | |
c3f26a26 DM |
3857 | /* No need to grab the _xmit_lock here. If the |
3858 | * queue is not stopped for another reason, we | |
3859 | * force a schedule. | |
3860 | */ | |
3861 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
7b3d3e4f | 3862 | netif_schedule_queue(txq); |
c3f26a26 DM |
3863 | } |
3864 | spin_unlock(&dev->tx_global_lock); | |
932ff279 HX |
3865 | } |
3866 | ||
3867 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
3868 | { | |
e8a0464c DM |
3869 | netif_tx_unlock(dev); |
3870 | local_bh_enable(); | |
932ff279 HX |
3871 | } |
3872 | ||
c773e847 | 3873 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 3874 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 3875 | __netif_tx_lock(txq, cpu); \ |
5a717f4f MT |
3876 | } else { \ |
3877 | __netif_tx_acquire(txq); \ | |
22dd7495 JHS |
3878 | } \ |
3879 | } | |
3880 | ||
5efeac44 EB |
3881 | #define HARD_TX_TRYLOCK(dev, txq) \ |
3882 | (((dev->features & NETIF_F_LLTX) == 0) ? \ | |
3883 | __netif_tx_trylock(txq) : \ | |
5a717f4f | 3884 | __netif_tx_acquire(txq)) |
5efeac44 | 3885 | |
c773e847 | 3886 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 3887 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 3888 | __netif_tx_unlock(txq); \ |
5a717f4f MT |
3889 | } else { \ |
3890 | __netif_tx_release(txq); \ | |
22dd7495 JHS |
3891 | } \ |
3892 | } | |
3893 | ||
1da177e4 LT |
3894 | static inline void netif_tx_disable(struct net_device *dev) |
3895 | { | |
fd2ea0a7 | 3896 | unsigned int i; |
c3f26a26 | 3897 | int cpu; |
fd2ea0a7 | 3898 | |
c3f26a26 DM |
3899 | local_bh_disable(); |
3900 | cpu = smp_processor_id(); | |
fd2ea0a7 DM |
3901 | for (i = 0; i < dev->num_tx_queues; i++) { |
3902 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
3903 | |
3904 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 3905 | netif_tx_stop_queue(txq); |
c3f26a26 | 3906 | __netif_tx_unlock(txq); |
fd2ea0a7 | 3907 | } |
c3f26a26 | 3908 | local_bh_enable(); |
1da177e4 LT |
3909 | } |
3910 | ||
e308a5d8 DM |
3911 | static inline void netif_addr_lock(struct net_device *dev) |
3912 | { | |
3913 | spin_lock(&dev->addr_list_lock); | |
3914 | } | |
3915 | ||
2429f7ac JP |
3916 | static inline void netif_addr_lock_nested(struct net_device *dev) |
3917 | { | |
25175ba5 VY |
3918 | int subclass = SINGLE_DEPTH_NESTING; |
3919 | ||
3920 | if (dev->netdev_ops->ndo_get_lock_subclass) | |
3921 | subclass = dev->netdev_ops->ndo_get_lock_subclass(dev); | |
3922 | ||
3923 | spin_lock_nested(&dev->addr_list_lock, subclass); | |
2429f7ac JP |
3924 | } |
3925 | ||
e308a5d8 DM |
3926 | static inline void netif_addr_lock_bh(struct net_device *dev) |
3927 | { | |
3928 | spin_lock_bh(&dev->addr_list_lock); | |
3929 | } | |
3930 | ||
3931 | static inline void netif_addr_unlock(struct net_device *dev) | |
3932 | { | |
3933 | spin_unlock(&dev->addr_list_lock); | |
3934 | } | |
3935 | ||
3936 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
3937 | { | |
3938 | spin_unlock_bh(&dev->addr_list_lock); | |
3939 | } | |
3940 | ||
f001fde5 | 3941 | /* |
31278e71 | 3942 | * dev_addrs walker. Should be used only for read access. Call with |
f001fde5 JP |
3943 | * rcu_read_lock held. |
3944 | */ | |
3945 | #define for_each_dev_addr(dev, ha) \ | |
31278e71 | 3946 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
f001fde5 | 3947 | |
1da177e4 LT |
3948 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
3949 | ||
f629d208 | 3950 | void ether_setup(struct net_device *dev); |
1da177e4 LT |
3951 | |
3952 | /* Support for loadable net-drivers */ | |
f629d208 | 3953 | struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, |
c835a677 | 3954 | unsigned char name_assign_type, |
f629d208 JP |
3955 | void (*setup)(struct net_device *), |
3956 | unsigned int txqs, unsigned int rxqs); | |
0ad646c8 CW |
3957 | int dev_get_valid_name(struct net *net, struct net_device *dev, |
3958 | const char *name); | |
3959 | ||
c835a677 TG |
3960 | #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \ |
3961 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, 1, 1) | |
36909ea4 | 3962 | |
c835a677 TG |
3963 | #define alloc_netdev_mq(sizeof_priv, name, name_assign_type, setup, count) \ |
3964 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, count, \ | |
3965 | count) | |
36909ea4 | 3966 | |
f629d208 JP |
3967 | int register_netdev(struct net_device *dev); |
3968 | void unregister_netdev(struct net_device *dev); | |
f001fde5 | 3969 | |
22bedad3 | 3970 | /* General hardware address lists handling functions */ |
f629d208 JP |
3971 | int __hw_addr_sync(struct netdev_hw_addr_list *to_list, |
3972 | struct netdev_hw_addr_list *from_list, int addr_len); | |
3973 | void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, | |
3974 | struct netdev_hw_addr_list *from_list, int addr_len); | |
670e5b8e AD |
3975 | int __hw_addr_sync_dev(struct netdev_hw_addr_list *list, |
3976 | struct net_device *dev, | |
3977 | int (*sync)(struct net_device *, const unsigned char *), | |
3978 | int (*unsync)(struct net_device *, | |
3979 | const unsigned char *)); | |
3980 | void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list, | |
3981 | struct net_device *dev, | |
3982 | int (*unsync)(struct net_device *, | |
3983 | const unsigned char *)); | |
f629d208 | 3984 | void __hw_addr_init(struct netdev_hw_addr_list *list); |
22bedad3 | 3985 | |
f001fde5 | 3986 | /* Functions used for device addresses handling */ |
f629d208 JP |
3987 | int dev_addr_add(struct net_device *dev, const unsigned char *addr, |
3988 | unsigned char addr_type); | |
3989 | int dev_addr_del(struct net_device *dev, const unsigned char *addr, | |
3990 | unsigned char addr_type); | |
f629d208 JP |
3991 | void dev_addr_flush(struct net_device *dev); |
3992 | int dev_addr_init(struct net_device *dev); | |
a748ee24 JP |
3993 | |
3994 | /* Functions used for unicast addresses handling */ | |
f629d208 JP |
3995 | int dev_uc_add(struct net_device *dev, const unsigned char *addr); |
3996 | int dev_uc_add_excl(struct net_device *dev, const unsigned char *addr); | |
3997 | int dev_uc_del(struct net_device *dev, const unsigned char *addr); | |
3998 | int dev_uc_sync(struct net_device *to, struct net_device *from); | |
3999 | int dev_uc_sync_multiple(struct net_device *to, struct net_device *from); | |
4000 | void dev_uc_unsync(struct net_device *to, struct net_device *from); | |
4001 | void dev_uc_flush(struct net_device *dev); | |
4002 | void dev_uc_init(struct net_device *dev); | |
f001fde5 | 4003 | |
670e5b8e AD |
4004 | /** |
4005 | * __dev_uc_sync - Synchonize device's unicast list | |
4006 | * @dev: device to sync | |
4007 | * @sync: function to call if address should be added | |
4008 | * @unsync: function to call if address should be removed | |
4009 | * | |
4010 | * Add newly added addresses to the interface, and release | |
4011 | * addresses that have been deleted. | |
5e82b4b2 | 4012 | */ |
670e5b8e AD |
4013 | static inline int __dev_uc_sync(struct net_device *dev, |
4014 | int (*sync)(struct net_device *, | |
4015 | const unsigned char *), | |
4016 | int (*unsync)(struct net_device *, | |
4017 | const unsigned char *)) | |
4018 | { | |
4019 | return __hw_addr_sync_dev(&dev->uc, dev, sync, unsync); | |
4020 | } | |
4021 | ||
4022 | /** | |
e793c0f7 | 4023 | * __dev_uc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
4024 | * @dev: device to sync |
4025 | * @unsync: function to call if address should be removed | |
4026 | * | |
4027 | * Remove all addresses that were added to the device by dev_uc_sync(). | |
5e82b4b2 | 4028 | */ |
670e5b8e AD |
4029 | static inline void __dev_uc_unsync(struct net_device *dev, |
4030 | int (*unsync)(struct net_device *, | |
4031 | const unsigned char *)) | |
4032 | { | |
4033 | __hw_addr_unsync_dev(&dev->uc, dev, unsync); | |
4034 | } | |
4035 | ||
22bedad3 | 4036 | /* Functions used for multicast addresses handling */ |
f629d208 JP |
4037 | int dev_mc_add(struct net_device *dev, const unsigned char *addr); |
4038 | int dev_mc_add_global(struct net_device *dev, const unsigned char *addr); | |
4039 | int dev_mc_add_excl(struct net_device *dev, const unsigned char *addr); | |
4040 | int dev_mc_del(struct net_device *dev, const unsigned char *addr); | |
4041 | int dev_mc_del_global(struct net_device *dev, const unsigned char *addr); | |
4042 | int dev_mc_sync(struct net_device *to, struct net_device *from); | |
4043 | int dev_mc_sync_multiple(struct net_device *to, struct net_device *from); | |
4044 | void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
4045 | void dev_mc_flush(struct net_device *dev); | |
4046 | void dev_mc_init(struct net_device *dev); | |
f001fde5 | 4047 | |
670e5b8e AD |
4048 | /** |
4049 | * __dev_mc_sync - Synchonize device's multicast list | |
4050 | * @dev: device to sync | |
4051 | * @sync: function to call if address should be added | |
4052 | * @unsync: function to call if address should be removed | |
4053 | * | |
4054 | * Add newly added addresses to the interface, and release | |
4055 | * addresses that have been deleted. | |
5e82b4b2 | 4056 | */ |
670e5b8e AD |
4057 | static inline int __dev_mc_sync(struct net_device *dev, |
4058 | int (*sync)(struct net_device *, | |
4059 | const unsigned char *), | |
4060 | int (*unsync)(struct net_device *, | |
4061 | const unsigned char *)) | |
4062 | { | |
4063 | return __hw_addr_sync_dev(&dev->mc, dev, sync, unsync); | |
4064 | } | |
4065 | ||
4066 | /** | |
e793c0f7 | 4067 | * __dev_mc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
4068 | * @dev: device to sync |
4069 | * @unsync: function to call if address should be removed | |
4070 | * | |
4071 | * Remove all addresses that were added to the device by dev_mc_sync(). | |
5e82b4b2 | 4072 | */ |
670e5b8e AD |
4073 | static inline void __dev_mc_unsync(struct net_device *dev, |
4074 | int (*unsync)(struct net_device *, | |
4075 | const unsigned char *)) | |
4076 | { | |
4077 | __hw_addr_unsync_dev(&dev->mc, dev, unsync); | |
4078 | } | |
4079 | ||
4417da66 | 4080 | /* Functions used for secondary unicast and multicast support */ |
f629d208 JP |
4081 | void dev_set_rx_mode(struct net_device *dev); |
4082 | void __dev_set_rx_mode(struct net_device *dev); | |
4083 | int dev_set_promiscuity(struct net_device *dev, int inc); | |
4084 | int dev_set_allmulti(struct net_device *dev, int inc); | |
4085 | void netdev_state_change(struct net_device *dev); | |
4086 | void netdev_notify_peers(struct net_device *dev); | |
4087 | void netdev_features_change(struct net_device *dev); | |
1da177e4 | 4088 | /* Load a device via the kmod */ |
f629d208 JP |
4089 | void dev_load(struct net *net, const char *name); |
4090 | struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, | |
4091 | struct rtnl_link_stats64 *storage); | |
4092 | void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64, | |
4093 | const struct net_device_stats *netdev_stats); | |
eeda3fd6 | 4094 | |
1da177e4 | 4095 | extern int netdev_max_backlog; |
3b098e2d | 4096 | extern int netdev_tstamp_prequeue; |
1da177e4 | 4097 | extern int weight_p; |
3d48b53f MT |
4098 | extern int dev_weight_rx_bias; |
4099 | extern int dev_weight_tx_bias; | |
4100 | extern int dev_rx_weight; | |
4101 | extern int dev_tx_weight; | |
9ff162a8 | 4102 | |
f629d208 | 4103 | bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev); |
44a40855 VY |
4104 | struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev, |
4105 | struct list_head **iter); | |
f629d208 JP |
4106 | struct net_device *netdev_all_upper_get_next_dev_rcu(struct net_device *dev, |
4107 | struct list_head **iter); | |
8b5be856 | 4108 | |
44a40855 VY |
4109 | /* iterate through upper list, must be called under RCU read lock */ |
4110 | #define netdev_for_each_upper_dev_rcu(dev, updev, iter) \ | |
4111 | for (iter = &(dev)->adj_list.upper, \ | |
4112 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter)); \ | |
4113 | updev; \ | |
4114 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter))) | |
4115 | ||
1a3f060c DA |
4116 | int netdev_walk_all_upper_dev_rcu(struct net_device *dev, |
4117 | int (*fn)(struct net_device *upper_dev, | |
4118 | void *data), | |
4119 | void *data); | |
4120 | ||
4121 | bool netdev_has_upper_dev_all_rcu(struct net_device *dev, | |
4122 | struct net_device *upper_dev); | |
4123 | ||
25cc72a3 IS |
4124 | bool netdev_has_any_upper_dev(struct net_device *dev); |
4125 | ||
f629d208 JP |
4126 | void *netdev_lower_get_next_private(struct net_device *dev, |
4127 | struct list_head **iter); | |
4128 | void *netdev_lower_get_next_private_rcu(struct net_device *dev, | |
4129 | struct list_head **iter); | |
31088a11 VF |
4130 | |
4131 | #define netdev_for_each_lower_private(dev, priv, iter) \ | |
4132 | for (iter = (dev)->adj_list.lower.next, \ | |
4133 | priv = netdev_lower_get_next_private(dev, &(iter)); \ | |
4134 | priv; \ | |
4135 | priv = netdev_lower_get_next_private(dev, &(iter))) | |
4136 | ||
4137 | #define netdev_for_each_lower_private_rcu(dev, priv, iter) \ | |
4138 | for (iter = &(dev)->adj_list.lower, \ | |
4139 | priv = netdev_lower_get_next_private_rcu(dev, &(iter)); \ | |
4140 | priv; \ | |
4141 | priv = netdev_lower_get_next_private_rcu(dev, &(iter))) | |
4142 | ||
4085ebe8 VY |
4143 | void *netdev_lower_get_next(struct net_device *dev, |
4144 | struct list_head **iter); | |
7ce856aa | 4145 | |
4085ebe8 | 4146 | #define netdev_for_each_lower_dev(dev, ldev, iter) \ |
cfdd28be | 4147 | for (iter = (dev)->adj_list.lower.next, \ |
4085ebe8 VY |
4148 | ldev = netdev_lower_get_next(dev, &(iter)); \ |
4149 | ldev; \ | |
4150 | ldev = netdev_lower_get_next(dev, &(iter))) | |
4151 | ||
7ce856aa JP |
4152 | struct net_device *netdev_all_lower_get_next(struct net_device *dev, |
4153 | struct list_head **iter); | |
4154 | struct net_device *netdev_all_lower_get_next_rcu(struct net_device *dev, | |
4155 | struct list_head **iter); | |
4156 | ||
1a3f060c DA |
4157 | int netdev_walk_all_lower_dev(struct net_device *dev, |
4158 | int (*fn)(struct net_device *lower_dev, | |
4159 | void *data), | |
4160 | void *data); | |
4161 | int netdev_walk_all_lower_dev_rcu(struct net_device *dev, | |
4162 | int (*fn)(struct net_device *lower_dev, | |
4163 | void *data), | |
4164 | void *data); | |
4165 | ||
f629d208 | 4166 | void *netdev_adjacent_get_private(struct list_head *adj_list); |
e001bfad | 4167 | void *netdev_lower_get_first_private_rcu(struct net_device *dev); |
f629d208 JP |
4168 | struct net_device *netdev_master_upper_dev_get(struct net_device *dev); |
4169 | struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev); | |
42ab19ee DA |
4170 | int netdev_upper_dev_link(struct net_device *dev, struct net_device *upper_dev, |
4171 | struct netlink_ext_ack *extack); | |
f629d208 | 4172 | int netdev_master_upper_dev_link(struct net_device *dev, |
6dffb044 | 4173 | struct net_device *upper_dev, |
42ab19ee DA |
4174 | void *upper_priv, void *upper_info, |
4175 | struct netlink_ext_ack *extack); | |
f629d208 JP |
4176 | void netdev_upper_dev_unlink(struct net_device *dev, |
4177 | struct net_device *upper_dev); | |
5bb025fa | 4178 | void netdev_adjacent_rename_links(struct net_device *dev, char *oldname); |
f629d208 JP |
4179 | void *netdev_lower_dev_get_private(struct net_device *dev, |
4180 | struct net_device *lower_dev); | |
04d48266 JP |
4181 | void netdev_lower_state_changed(struct net_device *lower_dev, |
4182 | void *lower_state_info); | |
960fb622 ED |
4183 | |
4184 | /* RSS keys are 40 or 52 bytes long */ | |
4185 | #define NETDEV_RSS_KEY_LEN 52 | |
ba905f5e | 4186 | extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
4187 | void netdev_rss_key_fill(void *buffer, size_t len); |
4188 | ||
952fcfd0 | 4189 | int dev_get_nest_level(struct net_device *dev); |
f629d208 | 4190 | int skb_checksum_help(struct sk_buff *skb); |
b72b5bf6 | 4191 | int skb_crc32c_csum_help(struct sk_buff *skb); |
43c26a1a DC |
4192 | int skb_csum_hwoffload_help(struct sk_buff *skb, |
4193 | const netdev_features_t features); | |
4194 | ||
f629d208 JP |
4195 | struct sk_buff *__skb_gso_segment(struct sk_buff *skb, |
4196 | netdev_features_t features, bool tx_path); | |
4197 | struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb, | |
4198 | netdev_features_t features); | |
12b0004d | 4199 | |
61bd3857 MS |
4200 | struct netdev_bonding_info { |
4201 | ifslave slave; | |
4202 | ifbond master; | |
4203 | }; | |
4204 | ||
4205 | struct netdev_notifier_bonding_info { | |
4206 | struct netdev_notifier_info info; /* must be first */ | |
4207 | struct netdev_bonding_info bonding_info; | |
4208 | }; | |
4209 | ||
4210 | void netdev_bonding_info_change(struct net_device *dev, | |
4211 | struct netdev_bonding_info *bonding_info); | |
4212 | ||
12b0004d CW |
4213 | static inline |
4214 | struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features) | |
4215 | { | |
4216 | return __skb_gso_segment(skb, features, true); | |
4217 | } | |
53d6471c | 4218 | __be16 skb_network_protocol(struct sk_buff *skb, int *depth); |
ec5f0615 PS |
4219 | |
4220 | static inline bool can_checksum_protocol(netdev_features_t features, | |
4221 | __be16 protocol) | |
4222 | { | |
c8cd0989 TH |
4223 | if (protocol == htons(ETH_P_FCOE)) |
4224 | return !!(features & NETIF_F_FCOE_CRC); | |
4225 | ||
4226 | /* Assume this is an IP checksum (not SCTP CRC) */ | |
4227 | ||
4228 | if (features & NETIF_F_HW_CSUM) { | |
4229 | /* Can checksum everything */ | |
4230 | return true; | |
4231 | } | |
4232 | ||
4233 | switch (protocol) { | |
4234 | case htons(ETH_P_IP): | |
4235 | return !!(features & NETIF_F_IP_CSUM); | |
4236 | case htons(ETH_P_IPV6): | |
4237 | return !!(features & NETIF_F_IPV6_CSUM); | |
4238 | default: | |
4239 | return false; | |
4240 | } | |
ec5f0615 | 4241 | } |
12b0004d | 4242 | |
fb286bb2 | 4243 | #ifdef CONFIG_BUG |
f629d208 | 4244 | void netdev_rx_csum_fault(struct net_device *dev); |
fb286bb2 HX |
4245 | #else |
4246 | static inline void netdev_rx_csum_fault(struct net_device *dev) | |
4247 | { | |
4248 | } | |
4249 | #endif | |
1da177e4 | 4250 | /* rx skb timestamps */ |
f629d208 JP |
4251 | void net_enable_timestamp(void); |
4252 | void net_disable_timestamp(void); | |
1da177e4 | 4253 | |
20380731 | 4254 | #ifdef CONFIG_PROC_FS |
f629d208 | 4255 | int __init dev_proc_init(void); |
900ff8c6 CW |
4256 | #else |
4257 | #define dev_proc_init() 0 | |
20380731 ACM |
4258 | #endif |
4259 | ||
4798248e | 4260 | static inline netdev_tx_t __netdev_start_xmit(const struct net_device_ops *ops, |
fa2dbdc2 DM |
4261 | struct sk_buff *skb, struct net_device *dev, |
4262 | bool more) | |
4798248e | 4263 | { |
fa2dbdc2 | 4264 | skb->xmit_more = more ? 1 : 0; |
0b725a2c | 4265 | return ops->ndo_start_xmit(skb, dev); |
4798248e DM |
4266 | } |
4267 | ||
10b3ad8c | 4268 | static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev, |
fa2dbdc2 | 4269 | struct netdev_queue *txq, bool more) |
4798248e DM |
4270 | { |
4271 | const struct net_device_ops *ops = dev->netdev_ops; | |
10b3ad8c | 4272 | int rc; |
4798248e | 4273 | |
fa2dbdc2 | 4274 | rc = __netdev_start_xmit(ops, skb, dev, more); |
10b3ad8c DM |
4275 | if (rc == NETDEV_TX_OK) |
4276 | txq_trans_update(txq); | |
4277 | ||
4278 | return rc; | |
4798248e DM |
4279 | } |
4280 | ||
b793dc5c | 4281 | int netdev_class_create_file_ns(const struct class_attribute *class_attr, |
42a2d923 | 4282 | const void *ns); |
b793dc5c | 4283 | void netdev_class_remove_file_ns(const struct class_attribute *class_attr, |
42a2d923 | 4284 | const void *ns); |
58292cbe | 4285 | |
b793dc5c | 4286 | static inline int netdev_class_create_file(const struct class_attribute *class_attr) |
58292cbe TH |
4287 | { |
4288 | return netdev_class_create_file_ns(class_attr, NULL); | |
4289 | } | |
4290 | ||
b793dc5c | 4291 | static inline void netdev_class_remove_file(const struct class_attribute *class_attr) |
58292cbe TH |
4292 | { |
4293 | netdev_class_remove_file_ns(class_attr, NULL); | |
4294 | } | |
b8a9787e | 4295 | |
737aec57 | 4296 | extern const struct kobj_ns_type_operations net_ns_type_operations; |
04600794 | 4297 | |
f629d208 | 4298 | const char *netdev_drivername(const struct net_device *dev); |
6579e57b | 4299 | |
f629d208 | 4300 | void linkwatch_run_queue(void); |
20380731 | 4301 | |
da08143b MK |
4302 | static inline netdev_features_t netdev_intersect_features(netdev_features_t f1, |
4303 | netdev_features_t f2) | |
4304 | { | |
c8cd0989 TH |
4305 | if ((f1 ^ f2) & NETIF_F_HW_CSUM) { |
4306 | if (f1 & NETIF_F_HW_CSUM) | |
b6a0e72a | 4307 | f1 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 4308 | else |
b6a0e72a | 4309 | f2 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 4310 | } |
da08143b | 4311 | |
c8cd0989 | 4312 | return f1 & f2; |
da08143b MK |
4313 | } |
4314 | ||
c8f44aff MM |
4315 | static inline netdev_features_t netdev_get_wanted_features( |
4316 | struct net_device *dev) | |
5455c699 MM |
4317 | { |
4318 | return (dev->features & ~dev->hw_features) | dev->wanted_features; | |
4319 | } | |
c8f44aff MM |
4320 | netdev_features_t netdev_increment_features(netdev_features_t all, |
4321 | netdev_features_t one, netdev_features_t mask); | |
b0ce3508 ED |
4322 | |
4323 | /* Allow TSO being used on stacked device : | |
4324 | * Performing the GSO segmentation before last device | |
4325 | * is a performance improvement. | |
4326 | */ | |
4327 | static inline netdev_features_t netdev_add_tso_features(netdev_features_t features, | |
4328 | netdev_features_t mask) | |
4329 | { | |
4330 | return netdev_increment_features(features, NETIF_F_ALL_TSO, mask); | |
4331 | } | |
4332 | ||
6cb6a27c | 4333 | int __netdev_update_features(struct net_device *dev); |
5455c699 | 4334 | void netdev_update_features(struct net_device *dev); |
afe12cc8 | 4335 | void netdev_change_features(struct net_device *dev); |
7f353bf2 | 4336 | |
fc4a7489 PM |
4337 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
4338 | struct net_device *dev); | |
4339 | ||
e38f3025 TM |
4340 | netdev_features_t passthru_features_check(struct sk_buff *skb, |
4341 | struct net_device *dev, | |
4342 | netdev_features_t features); | |
c1e756bf | 4343 | netdev_features_t netif_skb_features(struct sk_buff *skb); |
58e998c6 | 4344 | |
4d29515f | 4345 | static inline bool net_gso_ok(netdev_features_t features, int gso_type) |
576a30eb | 4346 | { |
7b748340 | 4347 | netdev_features_t feature = (netdev_features_t)gso_type << NETIF_F_GSO_SHIFT; |
0345e186 MM |
4348 | |
4349 | /* check flags correspondence */ | |
4350 | BUILD_BUG_ON(SKB_GSO_TCPV4 != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT)); | |
0345e186 MM |
4351 | BUILD_BUG_ON(SKB_GSO_DODGY != (NETIF_F_GSO_ROBUST >> NETIF_F_GSO_SHIFT)); |
4352 | BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT)); | |
cbc53e08 | 4353 | BUILD_BUG_ON(SKB_GSO_TCP_FIXEDID != (NETIF_F_TSO_MANGLEID >> NETIF_F_GSO_SHIFT)); |
0345e186 MM |
4354 | BUILD_BUG_ON(SKB_GSO_TCPV6 != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT)); |
4355 | BUILD_BUG_ON(SKB_GSO_FCOE != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
4356 | BUILD_BUG_ON(SKB_GSO_GRE != (NETIF_F_GSO_GRE >> NETIF_F_GSO_SHIFT)); |
4357 | BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT)); | |
7e13318d TH |
4358 | BUILD_BUG_ON(SKB_GSO_IPXIP4 != (NETIF_F_GSO_IPXIP4 >> NETIF_F_GSO_SHIFT)); |
4359 | BUILD_BUG_ON(SKB_GSO_IPXIP6 != (NETIF_F_GSO_IPXIP6 >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
4360 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT)); |
4361 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT)); | |
802ab55a | 4362 | BUILD_BUG_ON(SKB_GSO_PARTIAL != (NETIF_F_GSO_PARTIAL >> NETIF_F_GSO_SHIFT)); |
e585f236 | 4363 | BUILD_BUG_ON(SKB_GSO_TUNNEL_REMCSUM != (NETIF_F_GSO_TUNNEL_REMCSUM >> NETIF_F_GSO_SHIFT)); |
90017acc | 4364 | BUILD_BUG_ON(SKB_GSO_SCTP != (NETIF_F_GSO_SCTP >> NETIF_F_GSO_SHIFT)); |
c7ef8f0c | 4365 | BUILD_BUG_ON(SKB_GSO_ESP != (NETIF_F_GSO_ESP >> NETIF_F_GSO_SHIFT)); |
0c19f846 | 4366 | BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_GSO_UDP >> NETIF_F_GSO_SHIFT)); |
83aa025f | 4367 | BUILD_BUG_ON(SKB_GSO_UDP_L4 != (NETIF_F_GSO_UDP_L4 >> NETIF_F_GSO_SHIFT)); |
0345e186 | 4368 | |
d6b4991a | 4369 | return (features & feature) == feature; |
576a30eb HX |
4370 | } |
4371 | ||
4d29515f | 4372 | static inline bool skb_gso_ok(struct sk_buff *skb, netdev_features_t features) |
bcd76111 | 4373 | { |
278b2513 | 4374 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
21dc3301 | 4375 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
bcd76111 HX |
4376 | } |
4377 | ||
8b86a61d | 4378 | static inline bool netif_needs_gso(struct sk_buff *skb, |
4d29515f | 4379 | netdev_features_t features) |
7967168c | 4380 | { |
fc741216 | 4381 | return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || |
cdbee74c YZ |
4382 | unlikely((skb->ip_summed != CHECKSUM_PARTIAL) && |
4383 | (skb->ip_summed != CHECKSUM_UNNECESSARY))); | |
7967168c HX |
4384 | } |
4385 | ||
82cc1a7a PWJ |
4386 | static inline void netif_set_gso_max_size(struct net_device *dev, |
4387 | unsigned int size) | |
4388 | { | |
4389 | dev->gso_max_size = size; | |
4390 | } | |
4391 | ||
7a7ffbab WCC |
4392 | static inline void skb_gso_error_unwind(struct sk_buff *skb, __be16 protocol, |
4393 | int pulled_hlen, u16 mac_offset, | |
4394 | int mac_len) | |
4395 | { | |
4396 | skb->protocol = protocol; | |
4397 | skb->encapsulation = 1; | |
4398 | skb_push(skb, pulled_hlen); | |
4399 | skb_reset_transport_header(skb); | |
4400 | skb->mac_header = mac_offset; | |
4401 | skb->network_header = skb->mac_header + mac_len; | |
4402 | skb->mac_len = mac_len; | |
4403 | } | |
4404 | ||
3c175784 SD |
4405 | static inline bool netif_is_macsec(const struct net_device *dev) |
4406 | { | |
4407 | return dev->priv_flags & IFF_MACSEC; | |
4408 | } | |
4409 | ||
b618aaa9 | 4410 | static inline bool netif_is_macvlan(const struct net_device *dev) |
a6cc0cfa JF |
4411 | { |
4412 | return dev->priv_flags & IFF_MACVLAN; | |
4413 | } | |
4414 | ||
b618aaa9 | 4415 | static inline bool netif_is_macvlan_port(const struct net_device *dev) |
2f33e7d5 MB |
4416 | { |
4417 | return dev->priv_flags & IFF_MACVLAN_PORT; | |
4418 | } | |
4419 | ||
b618aaa9 | 4420 | static inline bool netif_is_bond_master(const struct net_device *dev) |
8a7fbfab | 4421 | { |
4422 | return dev->flags & IFF_MASTER && dev->priv_flags & IFF_BONDING; | |
4423 | } | |
4424 | ||
b618aaa9 | 4425 | static inline bool netif_is_bond_slave(const struct net_device *dev) |
1765a575 JP |
4426 | { |
4427 | return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING; | |
4428 | } | |
4429 | ||
3bdc0eba BG |
4430 | static inline bool netif_supports_nofcs(struct net_device *dev) |
4431 | { | |
4432 | return dev->priv_flags & IFF_SUPP_NOFCS; | |
4433 | } | |
4434 | ||
007979ea | 4435 | static inline bool netif_is_l3_master(const struct net_device *dev) |
4e3c8992 | 4436 | { |
007979ea | 4437 | return dev->priv_flags & IFF_L3MDEV_MASTER; |
4e3c8992 DA |
4438 | } |
4439 | ||
fee6d4c7 DA |
4440 | static inline bool netif_is_l3_slave(const struct net_device *dev) |
4441 | { | |
4442 | return dev->priv_flags & IFF_L3MDEV_SLAVE; | |
4443 | } | |
4444 | ||
0894ae3f JP |
4445 | static inline bool netif_is_bridge_master(const struct net_device *dev) |
4446 | { | |
4447 | return dev->priv_flags & IFF_EBRIDGE; | |
4448 | } | |
4449 | ||
28f9ee22 VY |
4450 | static inline bool netif_is_bridge_port(const struct net_device *dev) |
4451 | { | |
4452 | return dev->priv_flags & IFF_BRIDGE_PORT; | |
4453 | } | |
4454 | ||
35d4e172 JP |
4455 | static inline bool netif_is_ovs_master(const struct net_device *dev) |
4456 | { | |
4457 | return dev->priv_flags & IFF_OPENVSWITCH; | |
4458 | } | |
4459 | ||
5be66141 JP |
4460 | static inline bool netif_is_ovs_port(const struct net_device *dev) |
4461 | { | |
4462 | return dev->priv_flags & IFF_OVS_DATAPATH; | |
4463 | } | |
4464 | ||
b618aaa9 | 4465 | static inline bool netif_is_team_master(const struct net_device *dev) |
c981e421 JP |
4466 | { |
4467 | return dev->priv_flags & IFF_TEAM; | |
4468 | } | |
4469 | ||
b618aaa9 | 4470 | static inline bool netif_is_team_port(const struct net_device *dev) |
f7f019ee JP |
4471 | { |
4472 | return dev->priv_flags & IFF_TEAM_PORT; | |
4473 | } | |
4474 | ||
b618aaa9 | 4475 | static inline bool netif_is_lag_master(const struct net_device *dev) |
7be61833 JP |
4476 | { |
4477 | return netif_is_bond_master(dev) || netif_is_team_master(dev); | |
4478 | } | |
4479 | ||
b618aaa9 | 4480 | static inline bool netif_is_lag_port(const struct net_device *dev) |
e0ba1414 JP |
4481 | { |
4482 | return netif_is_bond_slave(dev) || netif_is_team_port(dev); | |
4483 | } | |
4484 | ||
d4ab4286 KJ |
4485 | static inline bool netif_is_rxfh_configured(const struct net_device *dev) |
4486 | { | |
4487 | return dev->priv_flags & IFF_RXFH_CONFIGURED; | |
4488 | } | |
4489 | ||
30c8bd5a SS |
4490 | static inline bool netif_is_failover(const struct net_device *dev) |
4491 | { | |
4492 | return dev->priv_flags & IFF_FAILOVER; | |
4493 | } | |
4494 | ||
4495 | static inline bool netif_is_failover_slave(const struct net_device *dev) | |
4496 | { | |
4497 | return dev->priv_flags & IFF_FAILOVER_SLAVE; | |
4498 | } | |
4499 | ||
02875878 ED |
4500 | /* This device needs to keep skb dst for qdisc enqueue or ndo_start_xmit() */ |
4501 | static inline void netif_keep_dst(struct net_device *dev) | |
4502 | { | |
4503 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM); | |
4504 | } | |
4505 | ||
18d3df3e PA |
4506 | /* return true if dev can't cope with mtu frames that need vlan tag insertion */ |
4507 | static inline bool netif_reduces_vlan_mtu(struct net_device *dev) | |
4508 | { | |
4509 | /* TODO: reserve and use an additional IFF bit, if we get more users */ | |
4510 | return dev->priv_flags & IFF_MACSEC; | |
4511 | } | |
4512 | ||
505d4f73 | 4513 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 | 4514 | |
571ba423 JP |
4515 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ |
4516 | ||
4517 | /* netdev_printk helpers, similar to dev_printk */ | |
4518 | ||
4519 | static inline const char *netdev_name(const struct net_device *dev) | |
4520 | { | |
c6f854d5 VF |
4521 | if (!dev->name[0] || strchr(dev->name, '%')) |
4522 | return "(unnamed net_device)"; | |
571ba423 JP |
4523 | return dev->name; |
4524 | } | |
4525 | ||
8397ed36 DA |
4526 | static inline bool netdev_unregistering(const struct net_device *dev) |
4527 | { | |
4528 | return dev->reg_state == NETREG_UNREGISTERING; | |
4529 | } | |
4530 | ||
ccc7f496 VF |
4531 | static inline const char *netdev_reg_state(const struct net_device *dev) |
4532 | { | |
4533 | switch (dev->reg_state) { | |
4534 | case NETREG_UNINITIALIZED: return " (uninitialized)"; | |
4535 | case NETREG_REGISTERED: return ""; | |
4536 | case NETREG_UNREGISTERING: return " (unregistering)"; | |
4537 | case NETREG_UNREGISTERED: return " (unregistered)"; | |
4538 | case NETREG_RELEASED: return " (released)"; | |
4539 | case NETREG_DUMMY: return " (dummy)"; | |
4540 | } | |
4541 | ||
4542 | WARN_ONCE(1, "%s: unknown reg_state %d\n", dev->name, dev->reg_state); | |
4543 | return " (unknown)"; | |
4544 | } | |
4545 | ||
f629d208 | 4546 | __printf(3, 4) |
6ea754eb JP |
4547 | void netdev_printk(const char *level, const struct net_device *dev, |
4548 | const char *format, ...); | |
f629d208 | 4549 | __printf(2, 3) |
6ea754eb | 4550 | void netdev_emerg(const struct net_device *dev, const char *format, ...); |
f629d208 | 4551 | __printf(2, 3) |
6ea754eb | 4552 | void netdev_alert(const struct net_device *dev, const char *format, ...); |
f629d208 | 4553 | __printf(2, 3) |
6ea754eb | 4554 | void netdev_crit(const struct net_device *dev, const char *format, ...); |
f629d208 | 4555 | __printf(2, 3) |
6ea754eb | 4556 | void netdev_err(const struct net_device *dev, const char *format, ...); |
f629d208 | 4557 | __printf(2, 3) |
6ea754eb | 4558 | void netdev_warn(const struct net_device *dev, const char *format, ...); |
f629d208 | 4559 | __printf(2, 3) |
6ea754eb | 4560 | void netdev_notice(const struct net_device *dev, const char *format, ...); |
f629d208 | 4561 | __printf(2, 3) |
6ea754eb | 4562 | void netdev_info(const struct net_device *dev, const char *format, ...); |
571ba423 | 4563 | |
375ef2b1 GP |
4564 | #define netdev_level_once(level, dev, fmt, ...) \ |
4565 | do { \ | |
4566 | static bool __print_once __read_mostly; \ | |
4567 | \ | |
4568 | if (!__print_once) { \ | |
4569 | __print_once = true; \ | |
4570 | netdev_printk(level, dev, fmt, ##__VA_ARGS__); \ | |
4571 | } \ | |
4572 | } while (0) | |
4573 | ||
4574 | #define netdev_emerg_once(dev, fmt, ...) \ | |
4575 | netdev_level_once(KERN_EMERG, dev, fmt, ##__VA_ARGS__) | |
4576 | #define netdev_alert_once(dev, fmt, ...) \ | |
4577 | netdev_level_once(KERN_ALERT, dev, fmt, ##__VA_ARGS__) | |
4578 | #define netdev_crit_once(dev, fmt, ...) \ | |
4579 | netdev_level_once(KERN_CRIT, dev, fmt, ##__VA_ARGS__) | |
4580 | #define netdev_err_once(dev, fmt, ...) \ | |
4581 | netdev_level_once(KERN_ERR, dev, fmt, ##__VA_ARGS__) | |
4582 | #define netdev_warn_once(dev, fmt, ...) \ | |
4583 | netdev_level_once(KERN_WARNING, dev, fmt, ##__VA_ARGS__) | |
4584 | #define netdev_notice_once(dev, fmt, ...) \ | |
4585 | netdev_level_once(KERN_NOTICE, dev, fmt, ##__VA_ARGS__) | |
4586 | #define netdev_info_once(dev, fmt, ...) \ | |
4587 | netdev_level_once(KERN_INFO, dev, fmt, ##__VA_ARGS__) | |
4588 | ||
8909c9ad VK |
4589 | #define MODULE_ALIAS_NETDEV(device) \ |
4590 | MODULE_ALIAS("netdev-" device) | |
4591 | ||
b558c96f | 4592 | #if defined(CONFIG_DYNAMIC_DEBUG) |
571ba423 JP |
4593 | #define netdev_dbg(__dev, format, args...) \ |
4594 | do { \ | |
ffa10cb4 | 4595 | dynamic_netdev_dbg(__dev, format, ##args); \ |
571ba423 | 4596 | } while (0) |
b558c96f JC |
4597 | #elif defined(DEBUG) |
4598 | #define netdev_dbg(__dev, format, args...) \ | |
4599 | netdev_printk(KERN_DEBUG, __dev, format, ##args) | |
571ba423 JP |
4600 | #else |
4601 | #define netdev_dbg(__dev, format, args...) \ | |
4602 | ({ \ | |
4603 | if (0) \ | |
4604 | netdev_printk(KERN_DEBUG, __dev, format, ##args); \ | |
571ba423 JP |
4605 | }) |
4606 | #endif | |
4607 | ||
4608 | #if defined(VERBOSE_DEBUG) | |
4609 | #define netdev_vdbg netdev_dbg | |
4610 | #else | |
4611 | ||
4612 | #define netdev_vdbg(dev, format, args...) \ | |
4613 | ({ \ | |
4614 | if (0) \ | |
4615 | netdev_printk(KERN_DEBUG, dev, format, ##args); \ | |
4616 | 0; \ | |
4617 | }) | |
4618 | #endif | |
4619 | ||
4620 | /* | |
4621 | * netdev_WARN() acts like dev_printk(), but with the key difference | |
4622 | * of using a WARN/WARN_ON to get the message out, including the | |
4623 | * file/line information and a backtrace. | |
4624 | */ | |
4625 | #define netdev_WARN(dev, format, args...) \ | |
e1cfe3d0 | 4626 | WARN(1, "netdevice: %s%s: " format, netdev_name(dev), \ |
ccc7f496 | 4627 | netdev_reg_state(dev), ##args) |
571ba423 | 4628 | |
72dd831e | 4629 | #define netdev_WARN_ONCE(dev, format, args...) \ |
e1cfe3d0 | 4630 | WARN_ONCE(1, "netdevice: %s%s: " format, netdev_name(dev), \ |
375ef2b1 GP |
4631 | netdev_reg_state(dev), ##args) |
4632 | ||
b3d95c5c JP |
4633 | /* netif printk helpers, similar to netdev_printk */ |
4634 | ||
4635 | #define netif_printk(priv, type, level, dev, fmt, args...) \ | |
4636 | do { \ | |
4637 | if (netif_msg_##type(priv)) \ | |
4638 | netdev_printk(level, (dev), fmt, ##args); \ | |
4639 | } while (0) | |
4640 | ||
f45f4321 JP |
4641 | #define netif_level(level, priv, type, dev, fmt, args...) \ |
4642 | do { \ | |
4643 | if (netif_msg_##type(priv)) \ | |
4644 | netdev_##level(dev, fmt, ##args); \ | |
4645 | } while (0) | |
4646 | ||
b3d95c5c | 4647 | #define netif_emerg(priv, type, dev, fmt, args...) \ |
f45f4321 | 4648 | netif_level(emerg, priv, type, dev, fmt, ##args) |
b3d95c5c | 4649 | #define netif_alert(priv, type, dev, fmt, args...) \ |
f45f4321 | 4650 | netif_level(alert, priv, type, dev, fmt, ##args) |
b3d95c5c | 4651 | #define netif_crit(priv, type, dev, fmt, args...) \ |
f45f4321 | 4652 | netif_level(crit, priv, type, dev, fmt, ##args) |
b3d95c5c | 4653 | #define netif_err(priv, type, dev, fmt, args...) \ |
f45f4321 | 4654 | netif_level(err, priv, type, dev, fmt, ##args) |
b3d95c5c | 4655 | #define netif_warn(priv, type, dev, fmt, args...) \ |
f45f4321 | 4656 | netif_level(warn, priv, type, dev, fmt, ##args) |
b3d95c5c | 4657 | #define netif_notice(priv, type, dev, fmt, args...) \ |
f45f4321 | 4658 | netif_level(notice, priv, type, dev, fmt, ##args) |
b3d95c5c | 4659 | #define netif_info(priv, type, dev, fmt, args...) \ |
f45f4321 | 4660 | netif_level(info, priv, type, dev, fmt, ##args) |
b3d95c5c | 4661 | |
0053ea9c | 4662 | #if defined(CONFIG_DYNAMIC_DEBUG) |
b3d95c5c JP |
4663 | #define netif_dbg(priv, type, netdev, format, args...) \ |
4664 | do { \ | |
4665 | if (netif_msg_##type(priv)) \ | |
b5fb0a03 | 4666 | dynamic_netdev_dbg(netdev, format, ##args); \ |
b3d95c5c | 4667 | } while (0) |
0053ea9c JP |
4668 | #elif defined(DEBUG) |
4669 | #define netif_dbg(priv, type, dev, format, args...) \ | |
4670 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args) | |
b3d95c5c JP |
4671 | #else |
4672 | #define netif_dbg(priv, type, dev, format, args...) \ | |
4673 | ({ \ | |
4674 | if (0) \ | |
4675 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ | |
4676 | 0; \ | |
4677 | }) | |
4678 | #endif | |
4679 | ||
f617f276 EC |
4680 | /* if @cond then downgrade to debug, else print at @level */ |
4681 | #define netif_cond_dbg(priv, type, netdev, cond, level, fmt, args...) \ | |
4682 | do { \ | |
4683 | if (cond) \ | |
4684 | netif_dbg(priv, type, netdev, fmt, ##args); \ | |
4685 | else \ | |
4686 | netif_ ## level(priv, type, netdev, fmt, ##args); \ | |
4687 | } while (0) | |
4688 | ||
b3d95c5c | 4689 | #if defined(VERBOSE_DEBUG) |
bcfcc450 | 4690 | #define netif_vdbg netif_dbg |
b3d95c5c JP |
4691 | #else |
4692 | #define netif_vdbg(priv, type, dev, format, args...) \ | |
4693 | ({ \ | |
4694 | if (0) \ | |
a4ed89cb | 4695 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
b3d95c5c JP |
4696 | 0; \ |
4697 | }) | |
4698 | #endif | |
571ba423 | 4699 | |
900ff8c6 CW |
4700 | /* |
4701 | * The list of packet types we will receive (as opposed to discard) | |
4702 | * and the routines to invoke. | |
4703 | * | |
4704 | * Why 16. Because with 16 the only overlap we get on a hash of the | |
4705 | * low nibble of the protocol value is RARP/SNAP/X.25. | |
4706 | * | |
900ff8c6 | 4707 | * 0800 IP |
900ff8c6 CW |
4708 | * 0001 802.3 |
4709 | * 0002 AX.25 | |
4710 | * 0004 802.2 | |
4711 | * 8035 RARP | |
4712 | * 0005 SNAP | |
4713 | * 0805 X.25 | |
4714 | * 0806 ARP | |
4715 | * 8137 IPX | |
4716 | * 0009 Localtalk | |
4717 | * 86DD IPv6 | |
4718 | */ | |
4719 | #define PTYPE_HASH_SIZE (16) | |
4720 | #define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) | |
4721 | ||
385a154c | 4722 | #endif /* _LINUX_NETDEVICE_H */ |