Commit | Line | Data |
---|---|---|
2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | /* |
3 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
4 | * operating system. INET is implemented using the BSD Socket | |
5 | * interface as the means of communication with the user level. | |
6 | * | |
7 | * Definitions for the Interfaces handler. | |
8 | * | |
9 | * Version: @(#)dev.h 1.0.10 08/12/93 | |
10 | * | |
02c30a84 | 11 | * Authors: Ross Biro |
1da177e4 LT |
12 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
13 | * Corey Minyard <wf-rch!minyard@relay.EU.net> | |
14 | * Donald J. Becker, <becker@cesdis.gsfc.nasa.gov> | |
113aa838 | 15 | * Alan Cox, <alan@lxorguk.ukuu.org.uk> |
1da177e4 LT |
16 | * Bjorn Ekwall. <bj0rn@blox.se> |
17 | * Pekka Riikonen <priikone@poseidon.pspt.fi> | |
18 | * | |
1da177e4 LT |
19 | * Moved to /usr/include/linux for NET3 |
20 | */ | |
21 | #ifndef _LINUX_NETDEVICE_H | |
22 | #define _LINUX_NETDEVICE_H | |
23 | ||
d7fe0f24 | 24 | #include <linux/timer.h> |
187f1882 | 25 | #include <linux/bug.h> |
bea3348e | 26 | #include <linux/delay.h> |
60063497 | 27 | #include <linux/atomic.h> |
53511453 | 28 | #include <linux/prefetch.h> |
1da177e4 LT |
29 | #include <asm/cache.h> |
30 | #include <asm/byteorder.h> | |
625788b5 | 31 | #include <asm/local.h> |
1da177e4 | 32 | |
1da177e4 | 33 | #include <linux/percpu.h> |
4d5b78c0 | 34 | #include <linux/rculist.h> |
bea3348e | 35 | #include <linux/workqueue.h> |
114cf580 | 36 | #include <linux/dynamic_queue_limits.h> |
1da177e4 | 37 | |
a050c33f | 38 | #include <net/net_namespace.h> |
7a6b6f51 | 39 | #ifdef CONFIG_DCB |
2f90b865 AD |
40 | #include <net/dcbnl.h> |
41 | #endif | |
5bc1421e | 42 | #include <net/netprio_cgroup.h> |
e817f856 | 43 | #include <net/xdp.h> |
a050c33f | 44 | |
a59e2ecb | 45 | #include <linux/netdev_features.h> |
77162022 | 46 | #include <linux/neighbour.h> |
607ca46e | 47 | #include <uapi/linux/netdevice.h> |
61bd3857 | 48 | #include <uapi/linux/if_bonding.h> |
e4c6734e | 49 | #include <uapi/linux/pkt_cls.h> |
59cc1f61 | 50 | #include <linux/hashtable.h> |
406f42fa | 51 | #include <linux/rbtree.h> |
9ba74e6c | 52 | #include <net/net_trackers.h> |
a59e2ecb | 53 | |
115c1d6e | 54 | struct netpoll_info; |
313162d0 | 55 | struct device; |
cc69837f | 56 | struct ethtool_ops; |
c1f19b51 | 57 | struct phy_device; |
2f657a60 | 58 | struct dsa_port; |
607259a6 | 59 | struct ip_tunnel_parm; |
30e9bb84 AT |
60 | struct macsec_context; |
61 | struct macsec_ops; | |
6264f58c JK |
62 | struct netdev_name_node; |
63 | struct sd_flow_limit; | |
e679c9c1 | 64 | struct sfp_bus; |
704232c2 JB |
65 | /* 802.11 specific */ |
66 | struct wireless_dev; | |
98a18b6f AA |
67 | /* 802.15.4 specific */ |
68 | struct wpan_dev; | |
03c57747 | 69 | struct mpls_dev; |
7c46a640 AD |
70 | /* UDP Tunnel offloads */ |
71 | struct udp_tunnel_info; | |
cc4e3835 JK |
72 | struct udp_tunnel_nic_info; |
73 | struct udp_tunnel_nic; | |
a7862b45 | 74 | struct bpf_prog; |
814abfab | 75 | struct xdp_buff; |
1da177e4 | 76 | |
5198d545 | 77 | void synchronize_net(void); |
f629d208 JP |
78 | void netdev_set_default_ethtool_ops(struct net_device *dev, |
79 | const struct ethtool_ops *ops); | |
d07d7507 | 80 | |
9a1654ba JP |
81 | /* Backlog congestion levels */ |
82 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
83 | #define NET_RX_DROP 1 /* packet dropped */ | |
84 | ||
7151affe TY |
85 | #define MAX_NEST_DEV 8 |
86 | ||
572a9d7b PM |
87 | /* |
88 | * Transmit return codes: transmit return codes originate from three different | |
89 | * namespaces: | |
90 | * | |
91 | * - qdisc return codes | |
92 | * - driver transmit return codes | |
93 | * - errno values | |
94 | * | |
95 | * Drivers are allowed to return any one of those in their hard_start_xmit() | |
96 | * function. Real network devices commonly used with qdiscs should only return | |
97 | * the driver transmit return codes though - when qdiscs are used, the actual | |
98 | * transmission happens asynchronously, so the value is not propagated to | |
5e82b4b2 BH |
99 | * higher layers. Virtual network devices transmit synchronously; in this case |
100 | * the driver transmit return codes are consumed by dev_queue_xmit(), and all | |
572a9d7b PM |
101 | * others are propagated to higher layers. |
102 | */ | |
103 | ||
104 | /* qdisc ->enqueue() return codes. */ | |
105 | #define NET_XMIT_SUCCESS 0x00 | |
9a1654ba JP |
106 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
107 | #define NET_XMIT_CN 0x02 /* congestion notification */ | |
9a1654ba | 108 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ |
1da177e4 | 109 | |
b9df3cb8 GR |
110 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
111 | * indicates that the device will soon be dropping packets, or already drops | |
112 | * some packets of the same priority; prompting us to send less aggressively. */ | |
572a9d7b | 113 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
1da177e4 LT |
114 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
115 | ||
dc1f8bf6 | 116 | /* Driver transmit return codes */ |
9a1654ba | 117 | #define NETDEV_TX_MASK 0xf0 |
572a9d7b | 118 | |
dc1f8bf6 | 119 | enum netdev_tx { |
572a9d7b | 120 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
9a1654ba JP |
121 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
122 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ | |
dc1f8bf6 SH |
123 | }; |
124 | typedef enum netdev_tx netdev_tx_t; | |
125 | ||
9a1654ba JP |
126 | /* |
127 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; | |
128 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. | |
129 | */ | |
130 | static inline bool dev_xmit_complete(int rc) | |
131 | { | |
132 | /* | |
133 | * Positive cases with an skb consumed by a driver: | |
134 | * - successful transmission (rc == NETDEV_TX_OK) | |
135 | * - error while transmitting (rc < 0) | |
136 | * - error while queueing to a different device (rc & NET_XMIT_MASK) | |
137 | */ | |
138 | if (likely(rc < NET_XMIT_MASK)) | |
139 | return true; | |
140 | ||
141 | return false; | |
142 | } | |
143 | ||
1da177e4 | 144 | /* |
5e82b4b2 | 145 | * Compute the worst-case header length according to the protocols |
1da177e4 LT |
146 | * used. |
147 | */ | |
fe2918b0 | 148 | |
c0eb4540 KS |
149 | #if defined(CONFIG_HYPERV_NET) |
150 | # define LL_MAX_HEADER 128 | |
151 | #elif defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) | |
8388e3da DM |
152 | # if defined(CONFIG_MAC80211_MESH) |
153 | # define LL_MAX_HEADER 128 | |
154 | # else | |
155 | # define LL_MAX_HEADER 96 | |
156 | # endif | |
1da177e4 | 157 | #else |
8388e3da | 158 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
159 | #endif |
160 | ||
d11ead75 BH |
161 | #if !IS_ENABLED(CONFIG_NET_IPIP) && !IS_ENABLED(CONFIG_NET_IPGRE) && \ |
162 | !IS_ENABLED(CONFIG_IPV6_SIT) && !IS_ENABLED(CONFIG_IPV6_TUNNEL) | |
1da177e4 LT |
163 | #define MAX_HEADER LL_MAX_HEADER |
164 | #else | |
165 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
166 | #endif | |
167 | ||
168 | /* | |
be1f3c2c BH |
169 | * Old network device statistics. Fields are native words |
170 | * (unsigned long) so they can be read and written atomically. | |
1da177e4 | 171 | */ |
fe2918b0 | 172 | |
d94d9fee | 173 | struct net_device_stats { |
3cfde79c BH |
174 | unsigned long rx_packets; |
175 | unsigned long tx_packets; | |
176 | unsigned long rx_bytes; | |
177 | unsigned long tx_bytes; | |
178 | unsigned long rx_errors; | |
179 | unsigned long tx_errors; | |
180 | unsigned long rx_dropped; | |
181 | unsigned long tx_dropped; | |
182 | unsigned long multicast; | |
1da177e4 | 183 | unsigned long collisions; |
1da177e4 | 184 | unsigned long rx_length_errors; |
3cfde79c BH |
185 | unsigned long rx_over_errors; |
186 | unsigned long rx_crc_errors; | |
187 | unsigned long rx_frame_errors; | |
188 | unsigned long rx_fifo_errors; | |
189 | unsigned long rx_missed_errors; | |
1da177e4 LT |
190 | unsigned long tx_aborted_errors; |
191 | unsigned long tx_carrier_errors; | |
192 | unsigned long tx_fifo_errors; | |
193 | unsigned long tx_heartbeat_errors; | |
194 | unsigned long tx_window_errors; | |
1da177e4 LT |
195 | unsigned long rx_compressed; |
196 | unsigned long tx_compressed; | |
197 | }; | |
198 | ||
625788b5 ED |
199 | /* per-cpu stats, allocated on demand. |
200 | * Try to fit them in a single cache line, for dev_get_stats() sake. | |
201 | */ | |
202 | struct net_device_core_stats { | |
203 | local_t rx_dropped; | |
204 | local_t tx_dropped; | |
205 | local_t rx_nohandler; | |
794c24e9 | 206 | local_t rx_otherhost_dropped; |
625788b5 | 207 | } __aligned(4 * sizeof(local_t)); |
1da177e4 LT |
208 | |
209 | #include <linux/cache.h> | |
210 | #include <linux/skbuff.h> | |
211 | ||
adc9300e | 212 | #ifdef CONFIG_RPS |
c5905afb | 213 | #include <linux/static_key.h> |
dc05360f ED |
214 | extern struct static_key_false rps_needed; |
215 | extern struct static_key_false rfs_needed; | |
adc9300e ED |
216 | #endif |
217 | ||
1da177e4 LT |
218 | struct neighbour; |
219 | struct neigh_parms; | |
220 | struct sk_buff; | |
221 | ||
f001fde5 JP |
222 | struct netdev_hw_addr { |
223 | struct list_head list; | |
406f42fa | 224 | struct rb_node node; |
f001fde5 JP |
225 | unsigned char addr[MAX_ADDR_LEN]; |
226 | unsigned char type; | |
ccffad25 JP |
227 | #define NETDEV_HW_ADDR_T_LAN 1 |
228 | #define NETDEV_HW_ADDR_T_SAN 2 | |
8e1b3884 TY |
229 | #define NETDEV_HW_ADDR_T_UNICAST 3 |
230 | #define NETDEV_HW_ADDR_T_MULTICAST 4 | |
22bedad3 | 231 | bool global_use; |
4cd729b0 | 232 | int sync_cnt; |
8f8f103d | 233 | int refcount; |
4543fbef | 234 | int synced; |
f001fde5 JP |
235 | struct rcu_head rcu_head; |
236 | }; | |
237 | ||
31278e71 JP |
238 | struct netdev_hw_addr_list { |
239 | struct list_head list; | |
240 | int count; | |
406f42fa GN |
241 | |
242 | /* Auxiliary tree for faster lookup on addition and deletion */ | |
243 | struct rb_root tree; | |
31278e71 JP |
244 | }; |
245 | ||
22bedad3 JP |
246 | #define netdev_hw_addr_list_count(l) ((l)->count) |
247 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) | |
248 | #define netdev_hw_addr_list_for_each(ha, l) \ | |
249 | list_for_each_entry(ha, &(l)->list, list) | |
32e7bfc4 | 250 | |
22bedad3 JP |
251 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
252 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) | |
253 | #define netdev_for_each_uc_addr(ha, dev) \ | |
254 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) | |
6683ece3 | 255 | |
22bedad3 JP |
256 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
257 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) | |
18e225f2 | 258 | #define netdev_for_each_mc_addr(ha, dev) \ |
22bedad3 | 259 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
6683ece3 | 260 | |
d94d9fee | 261 | struct hh_cache { |
5b3dc2f3 | 262 | unsigned int hh_len; |
3644f0ce | 263 | seqlock_t hh_lock; |
1da177e4 LT |
264 | |
265 | /* cached hardware header; allow for machine alignment needs. */ | |
266 | #define HH_DATA_MOD 16 | |
267 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 268 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
269 | #define HH_DATA_ALIGN(__len) \ |
270 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
271 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
272 | }; | |
273 | ||
5e82b4b2 | 274 | /* Reserve HH_DATA_MOD byte-aligned hard_header_len, but at least that much. |
1da177e4 LT |
275 | * Alternative is: |
276 | * dev->hard_header_len ? (dev->hard_header_len + | |
277 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
278 | * | |
279 | * We could use other alignment values, but we must maintain the | |
280 | * relationship HH alignment <= LL alignment. | |
281 | */ | |
282 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 283 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 284 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 | 285 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 286 | |
3b04ddde SH |
287 | struct header_ops { |
288 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
289 | unsigned short type, const void *daddr, | |
95c96174 | 290 | const void *saddr, unsigned int len); |
3b04ddde | 291 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); |
e69dd336 | 292 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh, __be16 type); |
3b04ddde SH |
293 | void (*cache_update)(struct hh_cache *hh, |
294 | const struct net_device *dev, | |
295 | const unsigned char *haddr); | |
2793a23a | 296 | bool (*validate)(const char *ll_header, unsigned int len); |
e78b2915 | 297 | __be16 (*parse_protocol)(const struct sk_buff *skb); |
3b04ddde SH |
298 | }; |
299 | ||
1da177e4 | 300 | /* These flag bits are private to the generic network queueing |
5e82b4b2 | 301 | * layer; they may not be explicitly referenced by any other |
1da177e4 LT |
302 | * code. |
303 | */ | |
304 | ||
d94d9fee | 305 | enum netdev_state_t { |
1da177e4 LT |
306 | __LINK_STATE_START, |
307 | __LINK_STATE_PRESENT, | |
1da177e4 | 308 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
309 | __LINK_STATE_LINKWATCH_PENDING, |
310 | __LINK_STATE_DORMANT, | |
eec517cd | 311 | __LINK_STATE_TESTING, |
1da177e4 LT |
312 | }; |
313 | ||
6312fe77 LR |
314 | struct gro_list { |
315 | struct list_head list; | |
316 | int count; | |
317 | }; | |
318 | ||
bea3348e | 319 | /* |
d9f37d01 LR |
320 | * size of gro hash buckets, must less than bit number of |
321 | * napi_struct::gro_bitmask | |
bea3348e | 322 | */ |
07d78363 | 323 | #define GRO_HASH_BUCKETS 8 |
d9f37d01 LR |
324 | |
325 | /* | |
326 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
327 | */ | |
bea3348e SH |
328 | struct napi_struct { |
329 | /* The poll_list must only be managed by the entity which | |
330 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
331 | * whoever atomically sets that bit can add this napi_struct | |
5e82b4b2 | 332 | * to the per-CPU poll_list, and whoever clears that bit |
bea3348e SH |
333 | * can remove from the list right before clearing the bit. |
334 | */ | |
335 | struct list_head poll_list; | |
336 | ||
337 | unsigned long state; | |
338 | int weight; | |
6f8b12d6 | 339 | int defer_hard_irqs_count; |
d9f37d01 | 340 | unsigned long gro_bitmask; |
bea3348e SH |
341 | int (*poll)(struct napi_struct *, int); |
342 | #ifdef CONFIG_NETPOLL | |
bea3348e | 343 | int poll_owner; |
bea3348e | 344 | #endif |
5d38a079 | 345 | struct net_device *dev; |
6312fe77 | 346 | struct gro_list gro_hash[GRO_HASH_BUCKETS]; |
5d38a079 | 347 | struct sk_buff *skb; |
323ebb61 EC |
348 | struct list_head rx_list; /* Pending GRO_NORMAL skbs */ |
349 | int rx_count; /* length of rx_list */ | |
3b47d303 | 350 | struct hrtimer timer; |
404f7c9e | 351 | struct list_head dev_list; |
af12fa6e ET |
352 | struct hlist_node napi_hash_node; |
353 | unsigned int napi_id; | |
29863d41 | 354 | struct task_struct *thread; |
bea3348e SH |
355 | }; |
356 | ||
d94d9fee | 357 | enum { |
7fd3253a BT |
358 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
359 | NAPI_STATE_MISSED, /* reschedule a napi */ | |
360 | NAPI_STATE_DISABLE, /* Disable pending */ | |
361 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ | |
362 | NAPI_STATE_LISTED, /* NAPI added to system lists */ | |
363 | NAPI_STATE_NO_BUSY_POLL, /* Do not add in napi_hash, no busy polling */ | |
364 | NAPI_STATE_IN_BUSY_POLL, /* sk_busy_loop() owns this NAPI */ | |
365 | NAPI_STATE_PREFER_BUSY_POLL, /* prefer busy-polling over softirq processing*/ | |
29863d41 | 366 | NAPI_STATE_THREADED, /* The poll is performed inside its own thread*/ |
cb038357 | 367 | NAPI_STATE_SCHED_THREADED, /* Napi is currently scheduled in threaded mode */ |
217f6974 ED |
368 | }; |
369 | ||
370 | enum { | |
7fd3253a BT |
371 | NAPIF_STATE_SCHED = BIT(NAPI_STATE_SCHED), |
372 | NAPIF_STATE_MISSED = BIT(NAPI_STATE_MISSED), | |
373 | NAPIF_STATE_DISABLE = BIT(NAPI_STATE_DISABLE), | |
374 | NAPIF_STATE_NPSVC = BIT(NAPI_STATE_NPSVC), | |
375 | NAPIF_STATE_LISTED = BIT(NAPI_STATE_LISTED), | |
376 | NAPIF_STATE_NO_BUSY_POLL = BIT(NAPI_STATE_NO_BUSY_POLL), | |
377 | NAPIF_STATE_IN_BUSY_POLL = BIT(NAPI_STATE_IN_BUSY_POLL), | |
378 | NAPIF_STATE_PREFER_BUSY_POLL = BIT(NAPI_STATE_PREFER_BUSY_POLL), | |
29863d41 | 379 | NAPIF_STATE_THREADED = BIT(NAPI_STATE_THREADED), |
cb038357 | 380 | NAPIF_STATE_SCHED_THREADED = BIT(NAPI_STATE_SCHED_THREADED), |
bea3348e SH |
381 | }; |
382 | ||
5b252f0c | 383 | enum gro_result { |
d1c76af9 HX |
384 | GRO_MERGED, |
385 | GRO_MERGED_FREE, | |
386 | GRO_HELD, | |
387 | GRO_NORMAL, | |
25393d3f | 388 | GRO_CONSUMED, |
d1c76af9 | 389 | }; |
5b252f0c | 390 | typedef enum gro_result gro_result_t; |
d1c76af9 | 391 | |
8a4eb573 JP |
392 | /* |
393 | * enum rx_handler_result - Possible return values for rx_handlers. | |
394 | * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it | |
395 | * further. | |
396 | * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in | |
397 | * case skb->dev was changed by rx_handler. | |
398 | * @RX_HANDLER_EXACT: Force exact delivery, no wildcard. | |
5e82b4b2 | 399 | * @RX_HANDLER_PASS: Do nothing, pass the skb as if no rx_handler was called. |
8a4eb573 JP |
400 | * |
401 | * rx_handlers are functions called from inside __netif_receive_skb(), to do | |
402 | * special processing of the skb, prior to delivery to protocol handlers. | |
403 | * | |
404 | * Currently, a net_device can only have a single rx_handler registered. Trying | |
405 | * to register a second rx_handler will return -EBUSY. | |
406 | * | |
407 | * To register a rx_handler on a net_device, use netdev_rx_handler_register(). | |
408 | * To unregister a rx_handler on a net_device, use | |
409 | * netdev_rx_handler_unregister(). | |
410 | * | |
411 | * Upon return, rx_handler is expected to tell __netif_receive_skb() what to | |
412 | * do with the skb. | |
413 | * | |
5e82b4b2 | 414 | * If the rx_handler consumed the skb in some way, it should return |
8a4eb573 | 415 | * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for |
5e82b4b2 | 416 | * the skb to be delivered in some other way. |
8a4eb573 JP |
417 | * |
418 | * If the rx_handler changed skb->dev, to divert the skb to another | |
419 | * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the | |
420 | * new device will be called if it exists. | |
421 | * | |
5e82b4b2 | 422 | * If the rx_handler decides the skb should be ignored, it should return |
8a4eb573 | 423 | * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that |
d93cf068 | 424 | * are registered on exact device (ptype->dev == skb->dev). |
8a4eb573 | 425 | * |
5e82b4b2 | 426 | * If the rx_handler didn't change skb->dev, but wants the skb to be normally |
8a4eb573 JP |
427 | * delivered, it should return RX_HANDLER_PASS. |
428 | * | |
429 | * A device without a registered rx_handler will behave as if rx_handler | |
430 | * returned RX_HANDLER_PASS. | |
431 | */ | |
432 | ||
433 | enum rx_handler_result { | |
434 | RX_HANDLER_CONSUMED, | |
435 | RX_HANDLER_ANOTHER, | |
436 | RX_HANDLER_EXACT, | |
437 | RX_HANDLER_PASS, | |
438 | }; | |
439 | typedef enum rx_handler_result rx_handler_result_t; | |
440 | typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb); | |
ab95bfe0 | 441 | |
f629d208 | 442 | void __napi_schedule(struct napi_struct *n); |
bc9ad166 | 443 | void __napi_schedule_irqoff(struct napi_struct *n); |
bea3348e | 444 | |
4d29515f | 445 | static inline bool napi_disable_pending(struct napi_struct *n) |
a0a46196 DM |
446 | { |
447 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
448 | } | |
449 | ||
7fd3253a BT |
450 | static inline bool napi_prefer_busy_poll(struct napi_struct *n) |
451 | { | |
452 | return test_bit(NAPI_STATE_PREFER_BUSY_POLL, &n->state); | |
453 | } | |
454 | ||
39e6c820 | 455 | bool napi_schedule_prep(struct napi_struct *n); |
bea3348e SH |
456 | |
457 | /** | |
458 | * napi_schedule - schedule NAPI poll | |
5e82b4b2 | 459 | * @n: NAPI context |
bea3348e SH |
460 | * |
461 | * Schedule NAPI poll routine to be called if it is not already | |
462 | * running. | |
463 | */ | |
464 | static inline void napi_schedule(struct napi_struct *n) | |
465 | { | |
466 | if (napi_schedule_prep(n)) | |
467 | __napi_schedule(n); | |
468 | } | |
469 | ||
bc9ad166 ED |
470 | /** |
471 | * napi_schedule_irqoff - schedule NAPI poll | |
5e82b4b2 | 472 | * @n: NAPI context |
bc9ad166 ED |
473 | * |
474 | * Variant of napi_schedule(), assuming hard irqs are masked. | |
475 | */ | |
476 | static inline void napi_schedule_irqoff(struct napi_struct *n) | |
477 | { | |
478 | if (napi_schedule_prep(n)) | |
479 | __napi_schedule_irqoff(n); | |
480 | } | |
481 | ||
bfe13f54 | 482 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
4d29515f | 483 | static inline bool napi_reschedule(struct napi_struct *napi) |
bfe13f54 RD |
484 | { |
485 | if (napi_schedule_prep(napi)) { | |
486 | __napi_schedule(napi); | |
4d29515f | 487 | return true; |
bfe13f54 | 488 | } |
4d29515f | 489 | return false; |
bfe13f54 RD |
490 | } |
491 | ||
364b6055 | 492 | bool napi_complete_done(struct napi_struct *n, int work_done); |
bea3348e SH |
493 | /** |
494 | * napi_complete - NAPI processing complete | |
5e82b4b2 | 495 | * @n: NAPI context |
bea3348e SH |
496 | * |
497 | * Mark NAPI processing as complete. | |
3b47d303 | 498 | * Consider using napi_complete_done() instead. |
364b6055 | 499 | * Return false if device should avoid rearming interrupts. |
bea3348e | 500 | */ |
364b6055 | 501 | static inline bool napi_complete(struct napi_struct *n) |
3b47d303 ED |
502 | { |
503 | return napi_complete_done(n, 0); | |
504 | } | |
bea3348e | 505 | |
5fdd2f0e WW |
506 | int dev_set_threaded(struct net_device *dev, bool threaded); |
507 | ||
bea3348e SH |
508 | /** |
509 | * napi_disable - prevent NAPI from scheduling | |
5e82b4b2 | 510 | * @n: NAPI context |
bea3348e SH |
511 | * |
512 | * Stop NAPI from being scheduled on this context. | |
513 | * Waits till any outstanding processing completes. | |
514 | */ | |
3b47d303 | 515 | void napi_disable(struct napi_struct *n); |
bea3348e | 516 | |
29863d41 | 517 | void napi_enable(struct napi_struct *n); |
bea3348e | 518 | |
c264c3de SH |
519 | /** |
520 | * napi_synchronize - wait until NAPI is not running | |
5e82b4b2 | 521 | * @n: NAPI context |
c264c3de SH |
522 | * |
523 | * Wait until NAPI is done being scheduled on this context. | |
524 | * Waits till any outstanding processing completes but | |
525 | * does not disable future activations. | |
526 | */ | |
527 | static inline void napi_synchronize(const struct napi_struct *n) | |
528 | { | |
facc432f AB |
529 | if (IS_ENABLED(CONFIG_SMP)) |
530 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
531 | msleep(1); | |
532 | else | |
533 | barrier(); | |
c264c3de | 534 | } |
c264c3de | 535 | |
6c5c9581 MK |
536 | /** |
537 | * napi_if_scheduled_mark_missed - if napi is running, set the | |
538 | * NAPIF_STATE_MISSED | |
539 | * @n: NAPI context | |
540 | * | |
541 | * If napi is running, set the NAPIF_STATE_MISSED, and return true if | |
542 | * NAPI is scheduled. | |
543 | **/ | |
544 | static inline bool napi_if_scheduled_mark_missed(struct napi_struct *n) | |
545 | { | |
546 | unsigned long val, new; | |
547 | ||
548 | do { | |
549 | val = READ_ONCE(n->state); | |
550 | if (val & NAPIF_STATE_DISABLE) | |
551 | return true; | |
552 | ||
553 | if (!(val & NAPIF_STATE_SCHED)) | |
554 | return false; | |
555 | ||
556 | new = val | NAPIF_STATE_MISSED; | |
557 | } while (cmpxchg(&n->state, val, new) != val); | |
558 | ||
559 | return true; | |
560 | } | |
561 | ||
d94d9fee | 562 | enum netdev_queue_state_t { |
73466498 TH |
563 | __QUEUE_STATE_DRV_XOFF, |
564 | __QUEUE_STATE_STACK_XOFF, | |
c3f26a26 | 565 | __QUEUE_STATE_FROZEN, |
79d16385 | 566 | }; |
8e2f1a63 DB |
567 | |
568 | #define QUEUE_STATE_DRV_XOFF (1 << __QUEUE_STATE_DRV_XOFF) | |
569 | #define QUEUE_STATE_STACK_XOFF (1 << __QUEUE_STATE_STACK_XOFF) | |
570 | #define QUEUE_STATE_FROZEN (1 << __QUEUE_STATE_FROZEN) | |
571 | ||
572 | #define QUEUE_STATE_ANY_XOFF (QUEUE_STATE_DRV_XOFF | QUEUE_STATE_STACK_XOFF) | |
573 | #define QUEUE_STATE_ANY_XOFF_OR_FROZEN (QUEUE_STATE_ANY_XOFF | \ | |
574 | QUEUE_STATE_FROZEN) | |
575 | #define QUEUE_STATE_DRV_XOFF_OR_FROZEN (QUEUE_STATE_DRV_XOFF | \ | |
576 | QUEUE_STATE_FROZEN) | |
577 | ||
73466498 TH |
578 | /* |
579 | * __QUEUE_STATE_DRV_XOFF is used by drivers to stop the transmit queue. The | |
580 | * netif_tx_* functions below are used to manipulate this flag. The | |
581 | * __QUEUE_STATE_STACK_XOFF flag is used by the stack to stop the transmit | |
582 | * queue independently. The netif_xmit_*stopped functions below are called | |
583 | * to check if the queue has been stopped by the driver or stack (either | |
584 | * of the XOFF bits are set in the state). Drivers should not need to call | |
585 | * netif_xmit*stopped functions, they should only be using netif_tx_*. | |
586 | */ | |
79d16385 | 587 | |
bb949fbd | 588 | struct netdev_queue { |
6a321cb3 | 589 | /* |
5e82b4b2 | 590 | * read-mostly part |
6a321cb3 | 591 | */ |
bb949fbd | 592 | struct net_device *dev; |
0b688f24 ED |
593 | netdevice_tracker dev_tracker; |
594 | ||
46e5da40 | 595 | struct Qdisc __rcu *qdisc; |
b0e1e646 | 596 | struct Qdisc *qdisc_sleeping; |
ccf5ff69 | 597 | #ifdef CONFIG_SYSFS |
1d24eb48 TH |
598 | struct kobject kobj; |
599 | #endif | |
f2cd2d3e ED |
600 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
601 | int numa_node; | |
602 | #endif | |
c0ef079c FW |
603 | unsigned long tx_maxrate; |
604 | /* | |
605 | * Number of TX timeouts for this queue | |
606 | * (/sys/class/net/DEV/Q/trans_timeout) | |
607 | */ | |
8160fb43 | 608 | atomic_long_t trans_timeout; |
ffcfe25b AD |
609 | |
610 | /* Subordinate device that the queue has been assigned to */ | |
611 | struct net_device *sb_dev; | |
661b8d1b | 612 | #ifdef CONFIG_XDP_SOCKETS |
1742b3d5 | 613 | struct xsk_buff_pool *pool; |
661b8d1b | 614 | #endif |
6a321cb3 | 615 | /* |
5e82b4b2 | 616 | * write-mostly part |
6a321cb3 ED |
617 | */ |
618 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
619 | int xmit_lock_owner; | |
9d21493b | 620 | /* |
9b36627a | 621 | * Time (in jiffies) of last Tx |
9d21493b ED |
622 | */ |
623 | unsigned long trans_start; | |
ccf5ff69 | 624 | |
114cf580 TH |
625 | unsigned long state; |
626 | ||
627 | #ifdef CONFIG_BQL | |
628 | struct dql dql; | |
629 | #endif | |
e8a0464c | 630 | } ____cacheline_aligned_in_smp; |
bb949fbd | 631 | |
79134e6c | 632 | extern int sysctl_fb_tunnels_only_for_init_net; |
856c395c | 633 | extern int sysctl_devconf_inherit_init_net; |
79134e6c | 634 | |
316cdaa1 MB |
635 | /* |
636 | * sysctl_fb_tunnels_only_for_init_net == 0 : For all netns | |
637 | * == 1 : For initns only | |
638 | * == 2 : For none. | |
639 | */ | |
79134e6c ED |
640 | static inline bool net_has_fallback_tunnels(const struct net *net) |
641 | { | |
3753d977 MB |
642 | return !IS_ENABLED(CONFIG_SYSCTL) || |
643 | !sysctl_fb_tunnels_only_for_init_net || | |
644 | (net == &init_net && sysctl_fb_tunnels_only_for_init_net == 1); | |
79134e6c ED |
645 | } |
646 | ||
f2cd2d3e ED |
647 | static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) |
648 | { | |
649 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
650 | return q->numa_node; | |
651 | #else | |
b236da69 | 652 | return NUMA_NO_NODE; |
f2cd2d3e ED |
653 | #endif |
654 | } | |
655 | ||
656 | static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node) | |
657 | { | |
658 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
659 | q->numa_node = node; | |
660 | #endif | |
661 | } | |
662 | ||
df334545 | 663 | #ifdef CONFIG_RPS |
0a9627f2 TH |
664 | /* |
665 | * This structure holds an RPS map which can be of variable length. The | |
666 | * map is an array of CPUs. | |
667 | */ | |
668 | struct rps_map { | |
669 | unsigned int len; | |
670 | struct rcu_head rcu; | |
bb4cf02d | 671 | u16 cpus[]; |
0a9627f2 | 672 | }; |
60b778ce | 673 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + ((_num) * sizeof(u16))) |
0a9627f2 | 674 | |
fec5e652 | 675 | /* |
c445477d BH |
676 | * The rps_dev_flow structure contains the mapping of a flow to a CPU, the |
677 | * tail pointer for that CPU's input queue at the time of last enqueue, and | |
678 | * a hardware filter index. | |
fec5e652 TH |
679 | */ |
680 | struct rps_dev_flow { | |
681 | u16 cpu; | |
c445477d | 682 | u16 filter; |
fec5e652 TH |
683 | unsigned int last_qtail; |
684 | }; | |
c445477d | 685 | #define RPS_NO_FILTER 0xffff |
fec5e652 TH |
686 | |
687 | /* | |
688 | * The rps_dev_flow_table structure contains a table of flow mappings. | |
689 | */ | |
690 | struct rps_dev_flow_table { | |
691 | unsigned int mask; | |
692 | struct rcu_head rcu; | |
bb4cf02d | 693 | struct rps_dev_flow flows[]; |
fec5e652 TH |
694 | }; |
695 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ | |
60b778ce | 696 | ((_num) * sizeof(struct rps_dev_flow))) |
fec5e652 TH |
697 | |
698 | /* | |
699 | * The rps_sock_flow_table contains mappings of flows to the last CPU | |
700 | * on which they were processed by the application (set in recvmsg). | |
5e82b4b2 BH |
701 | * Each entry is a 32bit value. Upper part is the high-order bits |
702 | * of flow hash, lower part is CPU number. | |
567e4b79 | 703 | * rps_cpu_mask is used to partition the space, depending on number of |
5e82b4b2 BH |
704 | * possible CPUs : rps_cpu_mask = roundup_pow_of_two(nr_cpu_ids) - 1 |
705 | * For example, if 64 CPUs are possible, rps_cpu_mask = 0x3f, | |
567e4b79 | 706 | * meaning we use 32-6=26 bits for the hash. |
fec5e652 TH |
707 | */ |
708 | struct rps_sock_flow_table { | |
567e4b79 | 709 | u32 mask; |
93c1af6c | 710 | |
bb4cf02d | 711 | u32 ents[] ____cacheline_aligned_in_smp; |
fec5e652 | 712 | }; |
567e4b79 | 713 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (offsetof(struct rps_sock_flow_table, ents[_num])) |
fec5e652 TH |
714 | |
715 | #define RPS_NO_CPU 0xffff | |
716 | ||
567e4b79 ED |
717 | extern u32 rps_cpu_mask; |
718 | extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; | |
719 | ||
fec5e652 TH |
720 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, |
721 | u32 hash) | |
722 | { | |
723 | if (table && hash) { | |
567e4b79 ED |
724 | unsigned int index = hash & table->mask; |
725 | u32 val = hash & ~rps_cpu_mask; | |
fec5e652 | 726 | |
5e82b4b2 | 727 | /* We only give a hint, preemption can change CPU under us */ |
567e4b79 | 728 | val |= raw_smp_processor_id(); |
fec5e652 | 729 | |
567e4b79 ED |
730 | if (table->ents[index] != val) |
731 | table->ents[index] = val; | |
fec5e652 TH |
732 | } |
733 | } | |
734 | ||
c445477d | 735 | #ifdef CONFIG_RFS_ACCEL |
f629d208 JP |
736 | bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, u32 flow_id, |
737 | u16 filter_id); | |
c445477d | 738 | #endif |
a953be53 | 739 | #endif /* CONFIG_RPS */ |
c445477d | 740 | |
0a9627f2 TH |
741 | /* This structure contains an instance of an RX queue. */ |
742 | struct netdev_rx_queue { | |
95d1d249 | 743 | struct xdp_rxq_info xdp_rxq; |
a953be53 | 744 | #ifdef CONFIG_RPS |
6e3f7faf ED |
745 | struct rps_map __rcu *rps_map; |
746 | struct rps_dev_flow_table __rcu *rps_flow_table; | |
a953be53 | 747 | #endif |
6e3f7faf | 748 | struct kobject kobj; |
fe822240 | 749 | struct net_device *dev; |
80e8921b ED |
750 | netdevice_tracker dev_tracker; |
751 | ||
661b8d1b | 752 | #ifdef CONFIG_XDP_SOCKETS |
1742b3d5 | 753 | struct xsk_buff_pool *pool; |
661b8d1b | 754 | #endif |
0a9627f2 | 755 | } ____cacheline_aligned_in_smp; |
a953be53 MD |
756 | |
757 | /* | |
758 | * RX queue sysfs structures and functions. | |
759 | */ | |
760 | struct rx_queue_attribute { | |
761 | struct attribute attr; | |
718ad681 | 762 | ssize_t (*show)(struct netdev_rx_queue *queue, char *buf); |
a953be53 | 763 | ssize_t (*store)(struct netdev_rx_queue *queue, |
718ad681 | 764 | const char *buf, size_t len); |
a953be53 | 765 | }; |
d314774c | 766 | |
044ab86d AT |
767 | /* XPS map type and offset of the xps map within net_device->xps_maps[]. */ |
768 | enum xps_map_type { | |
769 | XPS_CPUS = 0, | |
770 | XPS_RXQS, | |
771 | XPS_MAPS_MAX, | |
772 | }; | |
773 | ||
bf264145 TH |
774 | #ifdef CONFIG_XPS |
775 | /* | |
776 | * This structure holds an XPS map which can be of variable length. The | |
777 | * map is an array of queues. | |
778 | */ | |
779 | struct xps_map { | |
780 | unsigned int len; | |
781 | unsigned int alloc_len; | |
782 | struct rcu_head rcu; | |
bb4cf02d | 783 | u16 queues[]; |
bf264145 | 784 | }; |
60b778ce | 785 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + ((_num) * sizeof(u16))) |
c59f419b HD |
786 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_ALIGN(offsetof(struct xps_map, queues[1])) \ |
787 | - sizeof(struct xps_map)) / sizeof(u16)) | |
bf264145 TH |
788 | |
789 | /* | |
790 | * This structure holds all XPS maps for device. Maps are indexed by CPU. | |
255c04a8 | 791 | * |
5478fcd0 AT |
792 | * We keep track of the number of cpus/rxqs used when the struct is allocated, |
793 | * in nr_ids. This will help not accessing out-of-bound memory. | |
794 | * | |
255c04a8 AT |
795 | * We keep track of the number of traffic classes used when the struct is |
796 | * allocated, in num_tc. This will be used to navigate the maps, to ensure we're | |
797 | * not crossing its upper bound, as the original dev->num_tc can be updated in | |
798 | * the meantime. | |
bf264145 TH |
799 | */ |
800 | struct xps_dev_maps { | |
801 | struct rcu_head rcu; | |
5478fcd0 | 802 | unsigned int nr_ids; |
255c04a8 | 803 | s16 num_tc; |
bb4cf02d | 804 | struct xps_map __rcu *attr_map[]; /* Either CPUs map or RXQs map */ |
bf264145 | 805 | }; |
80d19669 AN |
806 | |
807 | #define XPS_CPU_DEV_MAPS_SIZE(_tcs) (sizeof(struct xps_dev_maps) + \ | |
184c449f | 808 | (nr_cpu_ids * (_tcs) * sizeof(struct xps_map *))) |
80d19669 AN |
809 | |
810 | #define XPS_RXQ_DEV_MAPS_SIZE(_tcs, _rxqs) (sizeof(struct xps_dev_maps) +\ | |
811 | (_rxqs * (_tcs) * sizeof(struct xps_map *))) | |
812 | ||
bf264145 TH |
813 | #endif /* CONFIG_XPS */ |
814 | ||
4f57c087 JF |
815 | #define TC_MAX_QUEUE 16 |
816 | #define TC_BITMASK 15 | |
817 | /* HW offloaded queuing disciplines txq count and offset maps */ | |
818 | struct netdev_tc_txq { | |
819 | u16 count; | |
820 | u16 offset; | |
821 | }; | |
822 | ||
68bad94e NP |
823 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
824 | /* | |
825 | * This structure is to hold information about the device | |
826 | * configured to run FCoE protocol stack. | |
827 | */ | |
828 | struct netdev_fcoe_hbainfo { | |
829 | char manufacturer[64]; | |
830 | char serial_number[64]; | |
831 | char hardware_version[64]; | |
832 | char driver_version[64]; | |
833 | char optionrom_version[64]; | |
834 | char firmware_version[64]; | |
835 | char model[256]; | |
836 | char model_description[256]; | |
837 | }; | |
838 | #endif | |
839 | ||
02637fce | 840 | #define MAX_PHYS_ITEM_ID_LEN 32 |
66b52b0d | 841 | |
02637fce JP |
842 | /* This structure holds a unique identifier to identify some |
843 | * physical item (port for example) used by a netdevice. | |
66b52b0d | 844 | */ |
02637fce JP |
845 | struct netdev_phys_item_id { |
846 | unsigned char id[MAX_PHYS_ITEM_ID_LEN]; | |
66b52b0d JP |
847 | unsigned char id_len; |
848 | }; | |
849 | ||
d754f98b SF |
850 | static inline bool netdev_phys_item_id_same(struct netdev_phys_item_id *a, |
851 | struct netdev_phys_item_id *b) | |
852 | { | |
853 | return a->id_len == b->id_len && | |
854 | memcmp(a->id, b->id, a->id_len) == 0; | |
855 | } | |
856 | ||
99932d4f | 857 | typedef u16 (*select_queue_fallback_t)(struct net_device *dev, |
8ec56fc3 AD |
858 | struct sk_buff *skb, |
859 | struct net_device *sb_dev); | |
99932d4f | 860 | |
ddb94eaf PNA |
861 | enum net_device_path_type { |
862 | DEV_PATH_ETHERNET = 0, | |
e4417d69 | 863 | DEV_PATH_VLAN, |
ec9d16ba | 864 | DEV_PATH_BRIDGE, |
f6efc675 | 865 | DEV_PATH_PPPOE, |
0994d492 | 866 | DEV_PATH_DSA, |
a333215e | 867 | DEV_PATH_MTK_WDMA, |
ddb94eaf PNA |
868 | }; |
869 | ||
870 | struct net_device_path { | |
871 | enum net_device_path_type type; | |
872 | const struct net_device *dev; | |
e4417d69 PNA |
873 | union { |
874 | struct { | |
875 | u16 id; | |
876 | __be16 proto; | |
f6efc675 | 877 | u8 h_dest[ETH_ALEN]; |
e4417d69 | 878 | } encap; |
bcf2766b FF |
879 | struct { |
880 | enum { | |
881 | DEV_PATH_BR_VLAN_KEEP, | |
882 | DEV_PATH_BR_VLAN_TAG, | |
883 | DEV_PATH_BR_VLAN_UNTAG, | |
26267bf9 | 884 | DEV_PATH_BR_VLAN_UNTAG_HW, |
bcf2766b FF |
885 | } vlan_mode; |
886 | u16 vlan_id; | |
887 | __be16 vlan_proto; | |
888 | } bridge; | |
0994d492 FF |
889 | struct { |
890 | int port; | |
891 | u16 proto; | |
892 | } dsa; | |
a333215e FF |
893 | struct { |
894 | u8 wdma_idx; | |
895 | u8 queue; | |
896 | u16 wcid; | |
897 | u8 bss; | |
898 | } mtk_wdma; | |
e4417d69 | 899 | }; |
ddb94eaf PNA |
900 | }; |
901 | ||
902 | #define NET_DEVICE_PATH_STACK_MAX 5 | |
bcf2766b | 903 | #define NET_DEVICE_PATH_VLAN_MAX 2 |
ddb94eaf PNA |
904 | |
905 | struct net_device_path_stack { | |
906 | int num_paths; | |
907 | struct net_device_path path[NET_DEVICE_PATH_STACK_MAX]; | |
908 | }; | |
909 | ||
910 | struct net_device_path_ctx { | |
911 | const struct net_device *dev; | |
912 | const u8 *daddr; | |
bcf2766b FF |
913 | |
914 | int num_vlans; | |
915 | struct { | |
916 | u16 id; | |
917 | __be16 proto; | |
918 | } vlan[NET_DEVICE_PATH_VLAN_MAX]; | |
ddb94eaf PNA |
919 | }; |
920 | ||
2572ac53 | 921 | enum tc_setup_type { |
575ed7d3 | 922 | TC_SETUP_QDISC_MQPRIO, |
a1b7c5fd | 923 | TC_SETUP_CLSU32, |
5b33f488 | 924 | TC_SETUP_CLSFLOWER, |
ade9b658 | 925 | TC_SETUP_CLSMATCHALL, |
332ae8e2 | 926 | TC_SETUP_CLSBPF, |
8c4083b3 | 927 | TC_SETUP_BLOCK, |
8521db4c | 928 | TC_SETUP_QDISC_CBS, |
602f3baf | 929 | TC_SETUP_QDISC_RED, |
7fdb61b4 | 930 | TC_SETUP_QDISC_PRIO, |
f971b132 | 931 | TC_SETUP_QDISC_MQ, |
25db26a9 | 932 | TC_SETUP_QDISC_ETF, |
98b0e5f6 | 933 | TC_SETUP_ROOT_QDISC, |
890d8d23 | 934 | TC_SETUP_QDISC_GRED, |
9c66d156 | 935 | TC_SETUP_QDISC_TAPRIO, |
c29f74e0 | 936 | TC_SETUP_FT, |
d35eb52b | 937 | TC_SETUP_QDISC_ETS, |
ef6aadcc | 938 | TC_SETUP_QDISC_TBF, |
aaca9408 | 939 | TC_SETUP_QDISC_FIFO, |
d03b195b | 940 | TC_SETUP_QDISC_HTB, |
8cbfe939 | 941 | TC_SETUP_ACT, |
16e5cc64 JF |
942 | }; |
943 | ||
f4e63525 JK |
944 | /* These structures hold the attributes of bpf state that are being passed |
945 | * to the netdevice through the bpf op. | |
a7862b45 | 946 | */ |
f4e63525 | 947 | enum bpf_netdev_command { |
a7862b45 BB |
948 | /* Set or clear a bpf program used in the earliest stages of packet |
949 | * rx. The prog will have been loaded as BPF_PROG_TYPE_XDP. The callee | |
950 | * is responsible for calling bpf_prog_put on any old progs that are | |
951 | * stored. In case of error, the callee need not release the new prog | |
952 | * reference, but on success it takes ownership and must bpf_prog_put | |
953 | * when it is no longer used. | |
954 | */ | |
955 | XDP_SETUP_PROG, | |
ee5d032f | 956 | XDP_SETUP_PROG_HW, |
ab3f0063 | 957 | /* BPF program for offload callbacks, invoked at program load time. */ |
a3884572 JK |
958 | BPF_OFFLOAD_MAP_ALLOC, |
959 | BPF_OFFLOAD_MAP_FREE, | |
1742b3d5 | 960 | XDP_SETUP_XSK_POOL, |
a7862b45 BB |
961 | }; |
962 | ||
cae1927c | 963 | struct bpf_prog_offload_ops; |
ddf9f970 | 964 | struct netlink_ext_ack; |
74515c57 | 965 | struct xdp_umem; |
75ccae62 | 966 | struct xdp_dev_bulk_queue; |
aa8d3a71 | 967 | struct bpf_xdp_link; |
ddf9f970 | 968 | |
7f0a8382 AN |
969 | enum bpf_xdp_mode { |
970 | XDP_MODE_SKB = 0, | |
971 | XDP_MODE_DRV = 1, | |
972 | XDP_MODE_HW = 2, | |
973 | __MAX_XDP_MODE | |
974 | }; | |
975 | ||
976 | struct bpf_xdp_entity { | |
977 | struct bpf_prog *prog; | |
aa8d3a71 | 978 | struct bpf_xdp_link *link; |
7f0a8382 | 979 | }; |
ddf9f970 | 980 | |
f4e63525 JK |
981 | struct netdev_bpf { |
982 | enum bpf_netdev_command command; | |
a7862b45 BB |
983 | union { |
984 | /* XDP_SETUP_PROG */ | |
ddf9f970 | 985 | struct { |
32d60277 | 986 | u32 flags; |
ddf9f970 JK |
987 | struct bpf_prog *prog; |
988 | struct netlink_ext_ack *extack; | |
989 | }; | |
a3884572 JK |
990 | /* BPF_OFFLOAD_MAP_ALLOC, BPF_OFFLOAD_MAP_FREE */ |
991 | struct { | |
992 | struct bpf_offloaded_map *offmap; | |
993 | }; | |
1742b3d5 | 994 | /* XDP_SETUP_XSK_POOL */ |
74515c57 | 995 | struct { |
1742b3d5 | 996 | struct xsk_buff_pool *pool; |
f8ebfaf6 | 997 | u16 queue_id; |
74515c57 | 998 | } xsk; |
a7862b45 BB |
999 | }; |
1000 | }; | |
16e5cc64 | 1001 | |
9116e5e2 MK |
1002 | /* Flags for ndo_xsk_wakeup. */ |
1003 | #define XDP_WAKEUP_RX (1 << 0) | |
1004 | #define XDP_WAKEUP_TX (1 << 1) | |
1005 | ||
d77e38e6 SK |
1006 | #ifdef CONFIG_XFRM_OFFLOAD |
1007 | struct xfrmdev_ops { | |
1008 | int (*xdo_dev_state_add) (struct xfrm_state *x); | |
1009 | void (*xdo_dev_state_delete) (struct xfrm_state *x); | |
1010 | void (*xdo_dev_state_free) (struct xfrm_state *x); | |
1011 | bool (*xdo_dev_offload_ok) (struct sk_buff *skb, | |
1012 | struct xfrm_state *x); | |
50bd870a | 1013 | void (*xdo_dev_state_advance_esn) (struct xfrm_state *x); |
d77e38e6 SK |
1014 | }; |
1015 | #endif | |
1016 | ||
6c557001 FW |
1017 | struct dev_ifalias { |
1018 | struct rcu_head rcuhead; | |
1019 | char ifalias[]; | |
1020 | }; | |
1021 | ||
b473b0d2 | 1022 | struct devlink; |
da68b4ad | 1023 | struct tlsdev_ops; |
b473b0d2 | 1024 | |
93642e14 JP |
1025 | struct netdev_net_notifier { |
1026 | struct list_head list; | |
1027 | struct notifier_block *nb; | |
1028 | }; | |
1029 | ||
d314774c SH |
1030 | /* |
1031 | * This structure defines the management hooks for network devices. | |
00829823 SH |
1032 | * The following hooks can be defined; unless noted otherwise, they are |
1033 | * optional and can be filled with a null pointer. | |
d314774c SH |
1034 | * |
1035 | * int (*ndo_init)(struct net_device *dev); | |
5e82b4b2 BH |
1036 | * This function is called once when a network device is registered. |
1037 | * The network device can use this for any late stage initialization | |
1038 | * or semantic validation. It can fail with an error code which will | |
1039 | * be propagated back to register_netdev. | |
d314774c SH |
1040 | * |
1041 | * void (*ndo_uninit)(struct net_device *dev); | |
1042 | * This function is called when device is unregistered or when registration | |
1043 | * fails. It is not called if init fails. | |
1044 | * | |
1045 | * int (*ndo_open)(struct net_device *dev); | |
5e82b4b2 | 1046 | * This function is called when a network device transitions to the up |
d314774c SH |
1047 | * state. |
1048 | * | |
1049 | * int (*ndo_stop)(struct net_device *dev); | |
5e82b4b2 | 1050 | * This function is called when a network device transitions to the down |
d314774c SH |
1051 | * state. |
1052 | * | |
dc1f8bf6 SH |
1053 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
1054 | * struct net_device *dev); | |
00829823 | 1055 | * Called when a packet needs to be transmitted. |
e79d8429 RR |
1056 | * Returns NETDEV_TX_OK. Can return NETDEV_TX_BUSY, but you should stop |
1057 | * the queue before that can happen; it's for obsolete devices and weird | |
1058 | * corner cases, but the stack really does a non-trivial amount | |
1059 | * of useless work if you return NETDEV_TX_BUSY. | |
5e82b4b2 | 1060 | * Required; cannot be NULL. |
00829823 | 1061 | * |
1a2a1444 DM |
1062 | * netdev_features_t (*ndo_features_check)(struct sk_buff *skb, |
1063 | * struct net_device *dev | |
1064 | * netdev_features_t features); | |
1065 | * Called by core transmit path to determine if device is capable of | |
1066 | * performing offload operations on a given packet. This is to give | |
1067 | * the device an opportunity to implement any restrictions that cannot | |
1068 | * be otherwise expressed by feature flags. The check is called with | |
1069 | * the set of features that the stack has calculated and it returns | |
1070 | * those the driver believes to be appropriate. | |
cdba756f | 1071 | * |
f663dd9a | 1072 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb, |
a350ecce | 1073 | * struct net_device *sb_dev); |
5e82b4b2 | 1074 | * Called to decide which queue to use when device supports multiple |
00829823 SH |
1075 | * transmit queues. |
1076 | * | |
d314774c SH |
1077 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
1078 | * This function is called to allow device receiver to make | |
5e82b4b2 | 1079 | * changes to configuration when multicast or promiscuous is enabled. |
d314774c SH |
1080 | * |
1081 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
1082 | * This function is called device changes address list filtering. | |
01789349 | 1083 | * If driver handles unicast address filtering, it should set |
5e82b4b2 | 1084 | * IFF_UNICAST_FLT in its priv_flags. |
d314774c SH |
1085 | * |
1086 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
1087 | * This function is called when the Media Access Control address | |
37b607c5 | 1088 | * needs to be changed. If this interface is not defined, the |
5e82b4b2 | 1089 | * MAC address can not be changed. |
d314774c SH |
1090 | * |
1091 | * int (*ndo_validate_addr)(struct net_device *dev); | |
1092 | * Test if Media Access Control address is valid for the device. | |
1093 | * | |
1094 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
3d9d00bd AB |
1095 | * Old-style ioctl entry point. This is used internally by the |
1096 | * appletalk and ieee802154 subsystems but is no longer called by | |
1097 | * the device ioctl handler. | |
1098 | * | |
1099 | * int (*ndo_siocbond)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
1100 | * Used by the bonding driver for its device specific ioctls: | |
1101 | * SIOCBONDENSLAVE, SIOCBONDRELEASE, SIOCBONDSETHWADDR, SIOCBONDCHANGEACTIVE, | |
1102 | * SIOCBONDSLAVEINFOQUERY, and SIOCBONDINFOQUERY | |
d314774c | 1103 | * |
a7605370 AB |
1104 | * * int (*ndo_eth_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); |
1105 | * Called for ethernet specific ioctls: SIOCGMIIPHY, SIOCGMIIREG, | |
1106 | * SIOCSMIIREG, SIOCSHWTSTAMP and SIOCGHWTSTAMP. | |
1107 | * | |
d314774c SH |
1108 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); |
1109 | * Used to set network devices bus interface parameters. This interface | |
5e82b4b2 | 1110 | * is retained for legacy reasons; new devices should use the bus |
d314774c SH |
1111 | * interface (PCI) for low level management. |
1112 | * | |
1113 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
1114 | * Called when a user wants to change the Maximum Transfer Unit | |
db46a0e1 | 1115 | * of a device. |
d314774c | 1116 | * |
0290bd29 | 1117 | * void (*ndo_tx_timeout)(struct net_device *dev, unsigned int txqueue); |
5e82b4b2 | 1118 | * Callback used when the transmitter has not made any progress |
d314774c SH |
1119 | * for dev->watchdog ticks. |
1120 | * | |
bc1f4470 | 1121 | * void (*ndo_get_stats64)(struct net_device *dev, |
1122 | * struct rtnl_link_stats64 *storage); | |
d308e38f | 1123 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
d314774c | 1124 | * Called when a user wants to get the network device usage |
be1f3c2c | 1125 | * statistics. Drivers must do one of the following: |
3cfde79c BH |
1126 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
1127 | * rtnl_link_stats64 structure passed by the caller. | |
82695d9b | 1128 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
be1f3c2c BH |
1129 | * (which should normally be dev->stats) and return a pointer to |
1130 | * it. The structure may be changed asynchronously only if each | |
1131 | * field is written atomically. | |
1132 | * 3. Update dev->stats asynchronously and atomically, and define | |
1133 | * neither operation. | |
d314774c | 1134 | * |
3df5b3c6 | 1135 | * bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id) |
2c9d85d4 NF |
1136 | * Return true if this device supports offload stats of this attr_id. |
1137 | * | |
1138 | * int (*ndo_get_offload_stats)(int attr_id, const struct net_device *dev, | |
1139 | * void *attr_data) | |
1140 | * Get statistics for offload operations by attr_id. Write it into the | |
1141 | * attr_data pointer. | |
1142 | * | |
5d632cb7 | 1143 | * int (*ndo_vlan_rx_add_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 1144 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 1145 | * VLAN id is registered. |
d314774c | 1146 | * |
5d632cb7 | 1147 | * int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 1148 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 1149 | * VLAN id is unregistered. |
d314774c SH |
1150 | * |
1151 | * void (*ndo_poll_controller)(struct net_device *dev); | |
95c26df8 WM |
1152 | * |
1153 | * SR-IOV management functions. | |
1154 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); | |
79aab093 MS |
1155 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, |
1156 | * u8 qos, __be16 proto); | |
ed616689 SC |
1157 | * int (*ndo_set_vf_rate)(struct net_device *dev, int vf, int min_tx_rate, |
1158 | * int max_tx_rate); | |
5f8444a3 | 1159 | * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting); |
dd461d6a | 1160 | * int (*ndo_set_vf_trust)(struct net_device *dev, int vf, bool setting); |
95c26df8 WM |
1161 | * int (*ndo_get_vf_config)(struct net_device *dev, |
1162 | * int vf, struct ifla_vf_info *ivf); | |
1d8faf48 | 1163 | * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state); |
57b61080 SF |
1164 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
1165 | * struct nlattr *port[]); | |
01a3d796 VZ |
1166 | * |
1167 | * Enable or disable the VF ability to query its RSS Redirection Table and | |
1168 | * Hash Key. This is needed since on some devices VF share this information | |
5e82b4b2 | 1169 | * with PF and querying it may introduce a theoretical security risk. |
01a3d796 | 1170 | * int (*ndo_set_vf_rss_query_en)(struct net_device *dev, int vf, bool setting); |
57b61080 | 1171 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); |
2572ac53 | 1172 | * int (*ndo_setup_tc)(struct net_device *dev, enum tc_setup_type type, |
de4784ca | 1173 | * void *type_data); |
6a4bc2b4 FF |
1174 | * Called to setup any 'tc' scheduler, classifier or action on @dev. |
1175 | * This is always called from the stack with the rtnl lock held and netif | |
1176 | * tx queues stopped. This allows the netdevice to perform queue | |
1177 | * management safely. | |
c445477d | 1178 | * |
e9bce845 YZ |
1179 | * Fiber Channel over Ethernet (FCoE) offload functions. |
1180 | * int (*ndo_fcoe_enable)(struct net_device *dev); | |
1181 | * Called when the FCoE protocol stack wants to start using LLD for FCoE | |
1182 | * so the underlying device can perform whatever needed configuration or | |
1183 | * initialization to support acceleration of FCoE traffic. | |
1184 | * | |
1185 | * int (*ndo_fcoe_disable)(struct net_device *dev); | |
1186 | * Called when the FCoE protocol stack wants to stop using LLD for FCoE | |
1187 | * so the underlying device can perform whatever needed clean-ups to | |
1188 | * stop supporting acceleration of FCoE traffic. | |
1189 | * | |
1190 | * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid, | |
1191 | * struct scatterlist *sgl, unsigned int sgc); | |
1192 | * Called when the FCoE Initiator wants to initialize an I/O that | |
1193 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
1194 | * perform necessary setup and returns 1 to indicate the device is set up | |
1195 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
1196 | * | |
1197 | * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); | |
1198 | * Called when the FCoE Initiator/Target is done with the DDPed I/O as | |
1199 | * indicated by the FC exchange id 'xid', so the underlying device can | |
1200 | * clean up and reuse resources for later DDP requests. | |
1201 | * | |
1202 | * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid, | |
1203 | * struct scatterlist *sgl, unsigned int sgc); | |
1204 | * Called when the FCoE Target wants to initialize an I/O that | |
1205 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
1206 | * perform necessary setup and returns 1 to indicate the device is set up | |
1207 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
1208 | * | |
68bad94e NP |
1209 | * int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1210 | * struct netdev_fcoe_hbainfo *hbainfo); | |
1211 | * Called when the FCoE Protocol stack wants information on the underlying | |
1212 | * device. This information is utilized by the FCoE protocol stack to | |
1213 | * register attributes with Fiber Channel management service as per the | |
1214 | * FC-GS Fabric Device Management Information(FDMI) specification. | |
1215 | * | |
e9bce845 YZ |
1216 | * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); |
1217 | * Called when the underlying device wants to override default World Wide | |
1218 | * Name (WWN) generation mechanism in FCoE protocol stack to pass its own | |
1219 | * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE | |
1220 | * protocol stack to use. | |
1221 | * | |
c445477d BH |
1222 | * RFS acceleration. |
1223 | * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, | |
1224 | * u16 rxq_index, u32 flow_id); | |
1225 | * Set hardware filter for RFS. rxq_index is the target queue index; | |
1226 | * flow_id is a flow ID to be passed to rps_may_expire_flow() later. | |
1227 | * Return the filter ID on success, or a negative error code. | |
fbaec0ea | 1228 | * |
8b98a70c | 1229 | * Slave management functions (for bridge, bonding, etc). |
fbaec0ea JP |
1230 | * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); |
1231 | * Called to make another netdev an underling. | |
1232 | * | |
1233 | * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); | |
1234 | * Called to release previously enslaved netdev. | |
5455c699 | 1235 | * |
cff9f12b MG |
1236 | * struct net_device *(*ndo_get_xmit_slave)(struct net_device *dev, |
1237 | * struct sk_buff *skb, | |
1238 | * bool all_slaves); | |
1239 | * Get the xmit slave of master device. If all_slaves is true, function | |
1240 | * assume all the slaves can transmit. | |
1241 | * | |
5455c699 | 1242 | * Feature/offload setting functions. |
1a2a1444 DM |
1243 | * netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1244 | * netdev_features_t features); | |
1245 | * Adjusts the requested feature flags according to device-specific | |
1246 | * constraints, and returns the resulting flags. Must not modify | |
1247 | * the device state. | |
1248 | * | |
c8f44aff | 1249 | * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); |
5455c699 MM |
1250 | * Called to update device configuration to new features. Passed |
1251 | * feature set might be less than what was returned by ndo_fix_features()). | |
1252 | * Must return >0 or -errno if it changed dev->features itself. | |
1253 | * | |
edc7d573 | 1254 | * int (*ndo_fdb_add)(struct ndmsg *ndm, struct nlattr *tb[], |
1255 | * struct net_device *dev, | |
87b0984e PM |
1256 | * const unsigned char *addr, u16 vid, u16 flags, |
1257 | * struct netlink_ext_ack *extack); | |
77162022 | 1258 | * Adds an FDB entry to dev for addr. |
1690be63 VY |
1259 | * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[], |
1260 | * struct net_device *dev, | |
f6f6424b | 1261 | * const unsigned char *addr, u16 vid) |
77162022 | 1262 | * Deletes the FDB entry from dev coresponding to addr. |
1306d536 NA |
1263 | * int (*ndo_fdb_del_bulk)(struct ndmsg *ndm, struct nlattr *tb[], |
1264 | * struct net_device *dev, | |
1265 | * u16 vid, | |
1266 | * struct netlink_ext_ack *extack); | |
77162022 | 1267 | * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb, |
5d5eacb3 | 1268 | * struct net_device *dev, struct net_device *filter_dev, |
d297653d | 1269 | * int *idx) |
77162022 JF |
1270 | * Used to add FDB entries to dump requests. Implementers should add |
1271 | * entries to skb and update idx with the number of entries. | |
e5a55a89 | 1272 | * |
ad41faa8 | 1273 | * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh, |
2fd527b7 | 1274 | * u16 flags, struct netlink_ext_ack *extack) |
e5a55a89 | 1275 | * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, |
46c264da ND |
1276 | * struct net_device *dev, u32 filter_mask, |
1277 | * int nlflags) | |
ad41faa8 ND |
1278 | * int (*ndo_bridge_dellink)(struct net_device *dev, struct nlmsghdr *nlh, |
1279 | * u16 flags); | |
4bf84c35 JP |
1280 | * |
1281 | * int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier); | |
1282 | * Called to change device carrier. Soft-devices (like dummy, team, etc) | |
1283 | * which do not represent real hardware may define this to allow their | |
1284 | * userspace components to manage their virtual carrier state. Devices | |
1285 | * that determine carrier state from physical hardware properties (eg | |
1286 | * network cables) or protocol-dependent mechanisms (eg | |
1287 | * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function. | |
66b52b0d JP |
1288 | * |
1289 | * int (*ndo_get_phys_port_id)(struct net_device *dev, | |
02637fce | 1290 | * struct netdev_phys_item_id *ppid); |
66b52b0d JP |
1291 | * Called to get ID of physical port of this device. If driver does |
1292 | * not implement this, it is assumed that the hw is not able to have | |
1293 | * multiple net devices on single physical port. | |
53cf5275 | 1294 | * |
d6abc596 FF |
1295 | * int (*ndo_get_port_parent_id)(struct net_device *dev, |
1296 | * struct netdev_phys_item_id *ppid) | |
1297 | * Called to get the parent ID of the physical port of this device. | |
1298 | * | |
a6cc0cfa JF |
1299 | * void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1300 | * struct net_device *dev) | |
1301 | * Called by upper layer devices to accelerate switching or other | |
1302 | * station functionality into hardware. 'pdev is the lowerdev | |
1303 | * to use for the offload and 'dev' is the net device that will | |
1304 | * back the offload. Returns a pointer to the private structure | |
1305 | * the upper layer will maintain. | |
1306 | * void (*ndo_dfwd_del_station)(struct net_device *pdev, void *priv) | |
1307 | * Called by upper layer device to delete the station created | |
1308 | * by 'ndo_dfwd_add_station'. 'pdev' is the net device backing | |
1309 | * the station and priv is the structure returned by the add | |
1310 | * operation. | |
822b3b2e JF |
1311 | * int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1312 | * int queue_index, u32 maxrate); | |
1313 | * Called when a user wants to set a max-rate limitation of specific | |
1314 | * TX queue. | |
a54acb3a ND |
1315 | * int (*ndo_get_iflink)(const struct net_device *dev); |
1316 | * Called to get the iflink value of this device. | |
fc4099f1 PS |
1317 | * int (*ndo_fill_metadata_dst)(struct net_device *dev, struct sk_buff *skb); |
1318 | * This function is used to get egress tunnel information for given skb. | |
1319 | * This is useful for retrieving outer tunnel header parameters while | |
1320 | * sampling packet. | |
871b642a PA |
1321 | * void (*ndo_set_rx_headroom)(struct net_device *dev, int needed_headroom); |
1322 | * This function is used to specify the headroom that the skb must | |
1323 | * consider when allocation skb during packet reception. Setting | |
1324 | * appropriate rx headroom value allows avoiding skb head copy on | |
5e82b4b2 | 1325 | * forward. Setting a negative value resets the rx headroom to the |
871b642a | 1326 | * default value. |
f4e63525 | 1327 | * int (*ndo_bpf)(struct net_device *dev, struct netdev_bpf *bpf); |
a7862b45 | 1328 | * This function is used to set or query state related to XDP on the |
f4e63525 JK |
1329 | * netdevice and manage BPF offload. See definition of |
1330 | * enum bpf_netdev_command for details. | |
42b33468 JDB |
1331 | * int (*ndo_xdp_xmit)(struct net_device *dev, int n, struct xdp_frame **xdp, |
1332 | * u32 flags); | |
735fc405 JDB |
1333 | * This function is used to submit @n XDP packets for transmit on a |
1334 | * netdevice. Returns number of frames successfully transmitted, frames | |
1335 | * that got dropped are freed/returned via xdp_return_frame(). | |
1336 | * Returns negative number, means general error invoking ndo, meaning | |
1337 | * no frames were xmit'ed and core-caller will free all frames. | |
879af96f JM |
1338 | * struct net_device *(*ndo_xdp_get_xmit_slave)(struct net_device *dev, |
1339 | * struct xdp_buff *xdp); | |
1340 | * Get the xmit slave of master device based on the xdp_buff. | |
9116e5e2 MK |
1341 | * int (*ndo_xsk_wakeup)(struct net_device *dev, u32 queue_id, u32 flags); |
1342 | * This function is used to wake up the softirq, ksoftirqd or kthread | |
1343 | * responsible for sending and/or receiving packets on a specific | |
1344 | * queue id bound to an AF_XDP socket. The flags field specifies if | |
1345 | * only RX, only Tx, or both should be woken up using the flags | |
1346 | * XDP_WAKEUP_RX and XDP_WAKEUP_TX. | |
5dc37bb9 JP |
1347 | * struct devlink_port *(*ndo_get_devlink_port)(struct net_device *dev); |
1348 | * Get devlink port instance associated with a given netdev. | |
b473b0d2 JK |
1349 | * Called with a reference on the netdevice and devlink locks only, |
1350 | * rtnl_lock is not held. | |
607259a6 CH |
1351 | * int (*ndo_tunnel_ctl)(struct net_device *dev, struct ip_tunnel_parm *p, |
1352 | * int cmd); | |
1353 | * Add, change, delete or get information on an IPv4 tunnel. | |
9aa1206e DB |
1354 | * struct net_device *(*ndo_get_peer_dev)(struct net_device *dev); |
1355 | * If a device is paired with a peer device, return the peer instance. | |
1356 | * The caller must be under RCU read context. | |
ddb94eaf PNA |
1357 | * int (*ndo_fill_forward_path)(struct net_device_path_ctx *ctx, struct net_device_path *path); |
1358 | * Get the forwarding path to reach the real device from the HW destination address | |
d314774c SH |
1359 | */ |
1360 | struct net_device_ops { | |
1361 | int (*ndo_init)(struct net_device *dev); | |
1362 | void (*ndo_uninit)(struct net_device *dev); | |
1363 | int (*ndo_open)(struct net_device *dev); | |
1364 | int (*ndo_stop)(struct net_device *dev); | |
cdba756f ED |
1365 | netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
1366 | struct net_device *dev); | |
1367 | netdev_features_t (*ndo_features_check)(struct sk_buff *skb, | |
1368 | struct net_device *dev, | |
1369 | netdev_features_t features); | |
00829823 | 1370 | u16 (*ndo_select_queue)(struct net_device *dev, |
f663dd9a | 1371 | struct sk_buff *skb, |
a350ecce | 1372 | struct net_device *sb_dev); |
d314774c SH |
1373 | void (*ndo_change_rx_flags)(struct net_device *dev, |
1374 | int flags); | |
d314774c | 1375 | void (*ndo_set_rx_mode)(struct net_device *dev); |
d314774c SH |
1376 | int (*ndo_set_mac_address)(struct net_device *dev, |
1377 | void *addr); | |
d314774c | 1378 | int (*ndo_validate_addr)(struct net_device *dev); |
d314774c SH |
1379 | int (*ndo_do_ioctl)(struct net_device *dev, |
1380 | struct ifreq *ifr, int cmd); | |
a7605370 AB |
1381 | int (*ndo_eth_ioctl)(struct net_device *dev, |
1382 | struct ifreq *ifr, int cmd); | |
3d9d00bd AB |
1383 | int (*ndo_siocbond)(struct net_device *dev, |
1384 | struct ifreq *ifr, int cmd); | |
ad7eab2a AB |
1385 | int (*ndo_siocwandev)(struct net_device *dev, |
1386 | struct if_settings *ifs); | |
b9067f5d AB |
1387 | int (*ndo_siocdevprivate)(struct net_device *dev, |
1388 | struct ifreq *ifr, | |
1389 | void __user *data, int cmd); | |
d314774c SH |
1390 | int (*ndo_set_config)(struct net_device *dev, |
1391 | struct ifmap *map); | |
00829823 SH |
1392 | int (*ndo_change_mtu)(struct net_device *dev, |
1393 | int new_mtu); | |
1394 | int (*ndo_neigh_setup)(struct net_device *dev, | |
1395 | struct neigh_parms *); | |
0290bd29 MT |
1396 | void (*ndo_tx_timeout) (struct net_device *dev, |
1397 | unsigned int txqueue); | |
d314774c | 1398 | |
bc1f4470 | 1399 | void (*ndo_get_stats64)(struct net_device *dev, |
1400 | struct rtnl_link_stats64 *storage); | |
3df5b3c6 | 1401 | bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id); |
2c9d85d4 NF |
1402 | int (*ndo_get_offload_stats)(int attr_id, |
1403 | const struct net_device *dev, | |
1404 | void *attr_data); | |
d314774c SH |
1405 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
1406 | ||
8e586137 | 1407 | int (*ndo_vlan_rx_add_vid)(struct net_device *dev, |
80d5c368 | 1408 | __be16 proto, u16 vid); |
8e586137 | 1409 | int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, |
80d5c368 | 1410 | __be16 proto, u16 vid); |
d314774c | 1411 | #ifdef CONFIG_NET_POLL_CONTROLLER |
d314774c | 1412 | void (*ndo_poll_controller)(struct net_device *dev); |
4247e161 | 1413 | int (*ndo_netpoll_setup)(struct net_device *dev, |
a8779ec1 | 1414 | struct netpoll_info *info); |
0e34e931 | 1415 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
d314774c | 1416 | #endif |
95c26df8 WM |
1417 | int (*ndo_set_vf_mac)(struct net_device *dev, |
1418 | int queue, u8 *mac); | |
1419 | int (*ndo_set_vf_vlan)(struct net_device *dev, | |
79aab093 MS |
1420 | int queue, u16 vlan, |
1421 | u8 qos, __be16 proto); | |
ed616689 SC |
1422 | int (*ndo_set_vf_rate)(struct net_device *dev, |
1423 | int vf, int min_tx_rate, | |
1424 | int max_tx_rate); | |
5f8444a3 GR |
1425 | int (*ndo_set_vf_spoofchk)(struct net_device *dev, |
1426 | int vf, bool setting); | |
dd461d6a HS |
1427 | int (*ndo_set_vf_trust)(struct net_device *dev, |
1428 | int vf, bool setting); | |
95c26df8 WM |
1429 | int (*ndo_get_vf_config)(struct net_device *dev, |
1430 | int vf, | |
1431 | struct ifla_vf_info *ivf); | |
1d8faf48 RE |
1432 | int (*ndo_set_vf_link_state)(struct net_device *dev, |
1433 | int vf, int link_state); | |
3b766cd8 EBE |
1434 | int (*ndo_get_vf_stats)(struct net_device *dev, |
1435 | int vf, | |
1436 | struct ifla_vf_stats | |
1437 | *vf_stats); | |
57b61080 SF |
1438 | int (*ndo_set_vf_port)(struct net_device *dev, |
1439 | int vf, | |
1440 | struct nlattr *port[]); | |
1441 | int (*ndo_get_vf_port)(struct net_device *dev, | |
1442 | int vf, struct sk_buff *skb); | |
30aad417 DG |
1443 | int (*ndo_get_vf_guid)(struct net_device *dev, |
1444 | int vf, | |
1445 | struct ifla_vf_guid *node_guid, | |
1446 | struct ifla_vf_guid *port_guid); | |
cc8e27cc EC |
1447 | int (*ndo_set_vf_guid)(struct net_device *dev, |
1448 | int vf, u64 guid, | |
1449 | int guid_type); | |
01a3d796 VZ |
1450 | int (*ndo_set_vf_rss_query_en)( |
1451 | struct net_device *dev, | |
1452 | int vf, bool setting); | |
16e5cc64 | 1453 | int (*ndo_setup_tc)(struct net_device *dev, |
2572ac53 | 1454 | enum tc_setup_type type, |
de4784ca | 1455 | void *type_data); |
d11ead75 | 1456 | #if IS_ENABLED(CONFIG_FCOE) |
cb454399 YZ |
1457 | int (*ndo_fcoe_enable)(struct net_device *dev); |
1458 | int (*ndo_fcoe_disable)(struct net_device *dev); | |
4d288d57 YZ |
1459 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
1460 | u16 xid, | |
1461 | struct scatterlist *sgl, | |
1462 | unsigned int sgc); | |
1463 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
1464 | u16 xid); | |
6247e086 YZ |
1465 | int (*ndo_fcoe_ddp_target)(struct net_device *dev, |
1466 | u16 xid, | |
1467 | struct scatterlist *sgl, | |
1468 | unsigned int sgc); | |
68bad94e NP |
1469 | int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1470 | struct netdev_fcoe_hbainfo *hbainfo); | |
3c9c36bc BPG |
1471 | #endif |
1472 | ||
d11ead75 | 1473 | #if IS_ENABLED(CONFIG_LIBFCOE) |
df5c7945 YZ |
1474 | #define NETDEV_FCOE_WWNN 0 |
1475 | #define NETDEV_FCOE_WWPN 1 | |
1476 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, | |
1477 | u64 *wwn, int type); | |
4d288d57 | 1478 | #endif |
3c9c36bc | 1479 | |
c445477d BH |
1480 | #ifdef CONFIG_RFS_ACCEL |
1481 | int (*ndo_rx_flow_steer)(struct net_device *dev, | |
1482 | const struct sk_buff *skb, | |
1483 | u16 rxq_index, | |
1484 | u32 flow_id); | |
1485 | #endif | |
fbaec0ea | 1486 | int (*ndo_add_slave)(struct net_device *dev, |
33eaf2a6 DA |
1487 | struct net_device *slave_dev, |
1488 | struct netlink_ext_ack *extack); | |
fbaec0ea JP |
1489 | int (*ndo_del_slave)(struct net_device *dev, |
1490 | struct net_device *slave_dev); | |
cff9f12b MG |
1491 | struct net_device* (*ndo_get_xmit_slave)(struct net_device *dev, |
1492 | struct sk_buff *skb, | |
1493 | bool all_slaves); | |
719a402c TT |
1494 | struct net_device* (*ndo_sk_get_lower_dev)(struct net_device *dev, |
1495 | struct sock *sk); | |
c8f44aff MM |
1496 | netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1497 | netdev_features_t features); | |
5455c699 | 1498 | int (*ndo_set_features)(struct net_device *dev, |
c8f44aff | 1499 | netdev_features_t features); |
503eebc2 JP |
1500 | int (*ndo_neigh_construct)(struct net_device *dev, |
1501 | struct neighbour *n); | |
1502 | void (*ndo_neigh_destroy)(struct net_device *dev, | |
1503 | struct neighbour *n); | |
77162022 JF |
1504 | |
1505 | int (*ndo_fdb_add)(struct ndmsg *ndm, | |
edc7d573 | 1506 | struct nlattr *tb[], |
77162022 | 1507 | struct net_device *dev, |
6b6e2725 | 1508 | const unsigned char *addr, |
f6f6424b | 1509 | u16 vid, |
87b0984e PM |
1510 | u16 flags, |
1511 | struct netlink_ext_ack *extack); | |
77162022 | 1512 | int (*ndo_fdb_del)(struct ndmsg *ndm, |
1690be63 | 1513 | struct nlattr *tb[], |
77162022 | 1514 | struct net_device *dev, |
f6f6424b JP |
1515 | const unsigned char *addr, |
1516 | u16 vid); | |
1306d536 NA |
1517 | int (*ndo_fdb_del_bulk)(struct ndmsg *ndm, |
1518 | struct nlattr *tb[], | |
1519 | struct net_device *dev, | |
1520 | u16 vid, | |
1521 | struct netlink_ext_ack *extack); | |
77162022 JF |
1522 | int (*ndo_fdb_dump)(struct sk_buff *skb, |
1523 | struct netlink_callback *cb, | |
1524 | struct net_device *dev, | |
5d5eacb3 | 1525 | struct net_device *filter_dev, |
d297653d | 1526 | int *idx); |
5b2f94b2 RP |
1527 | int (*ndo_fdb_get)(struct sk_buff *skb, |
1528 | struct nlattr *tb[], | |
1529 | struct net_device *dev, | |
1530 | const unsigned char *addr, | |
1531 | u16 vid, u32 portid, u32 seq, | |
1532 | struct netlink_ext_ack *extack); | |
e5a55a89 | 1533 | int (*ndo_bridge_setlink)(struct net_device *dev, |
add511b3 | 1534 | struct nlmsghdr *nlh, |
2fd527b7 PM |
1535 | u16 flags, |
1536 | struct netlink_ext_ack *extack); | |
e5a55a89 JF |
1537 | int (*ndo_bridge_getlink)(struct sk_buff *skb, |
1538 | u32 pid, u32 seq, | |
6cbdceeb | 1539 | struct net_device *dev, |
46c264da ND |
1540 | u32 filter_mask, |
1541 | int nlflags); | |
407af329 | 1542 | int (*ndo_bridge_dellink)(struct net_device *dev, |
add511b3 RP |
1543 | struct nlmsghdr *nlh, |
1544 | u16 flags); | |
4bf84c35 JP |
1545 | int (*ndo_change_carrier)(struct net_device *dev, |
1546 | bool new_carrier); | |
66b52b0d | 1547 | int (*ndo_get_phys_port_id)(struct net_device *dev, |
02637fce | 1548 | struct netdev_phys_item_id *ppid); |
d6abc596 FF |
1549 | int (*ndo_get_port_parent_id)(struct net_device *dev, |
1550 | struct netdev_phys_item_id *ppid); | |
db24a904 DA |
1551 | int (*ndo_get_phys_port_name)(struct net_device *dev, |
1552 | char *name, size_t len); | |
a6cc0cfa JF |
1553 | void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1554 | struct net_device *dev); | |
1555 | void (*ndo_dfwd_del_station)(struct net_device *pdev, | |
1556 | void *priv); | |
1557 | ||
822b3b2e JF |
1558 | int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1559 | int queue_index, | |
1560 | u32 maxrate); | |
a54acb3a | 1561 | int (*ndo_get_iflink)(const struct net_device *dev); |
fc4099f1 PS |
1562 | int (*ndo_fill_metadata_dst)(struct net_device *dev, |
1563 | struct sk_buff *skb); | |
871b642a PA |
1564 | void (*ndo_set_rx_headroom)(struct net_device *dev, |
1565 | int needed_headroom); | |
f4e63525 JK |
1566 | int (*ndo_bpf)(struct net_device *dev, |
1567 | struct netdev_bpf *bpf); | |
735fc405 | 1568 | int (*ndo_xdp_xmit)(struct net_device *dev, int n, |
42b33468 JDB |
1569 | struct xdp_frame **xdp, |
1570 | u32 flags); | |
879af96f JM |
1571 | struct net_device * (*ndo_xdp_get_xmit_slave)(struct net_device *dev, |
1572 | struct xdp_buff *xdp); | |
9116e5e2 MK |
1573 | int (*ndo_xsk_wakeup)(struct net_device *dev, |
1574 | u32 queue_id, u32 flags); | |
5dc37bb9 | 1575 | struct devlink_port * (*ndo_get_devlink_port)(struct net_device *dev); |
607259a6 CH |
1576 | int (*ndo_tunnel_ctl)(struct net_device *dev, |
1577 | struct ip_tunnel_parm *p, int cmd); | |
9aa1206e | 1578 | struct net_device * (*ndo_get_peer_dev)(struct net_device *dev); |
ddb94eaf PNA |
1579 | int (*ndo_fill_forward_path)(struct net_device_path_ctx *ctx, |
1580 | struct net_device_path *path); | |
d314774c SH |
1581 | }; |
1582 | ||
7aa98047 | 1583 | /** |
270f3385 | 1584 | * enum netdev_priv_flags - &struct net_device priv_flags |
7aa98047 LR |
1585 | * |
1586 | * These are the &struct net_device, they are only set internally | |
1587 | * by drivers and used in the kernel. These flags are invisible to | |
5e82b4b2 | 1588 | * userspace; this means that the order of these flags can change |
7aa98047 LR |
1589 | * during any kernel release. |
1590 | * | |
1591 | * You should have a pretty good reason to be extending these flags. | |
1592 | * | |
1593 | * @IFF_802_1Q_VLAN: 802.1Q VLAN device | |
1594 | * @IFF_EBRIDGE: Ethernet bridging device | |
7aa98047 | 1595 | * @IFF_BONDING: bonding master or slave |
7aa98047 | 1596 | * @IFF_ISATAP: ISATAP interface (RFC4214) |
7aa98047 LR |
1597 | * @IFF_WAN_HDLC: WAN HDLC device |
1598 | * @IFF_XMIT_DST_RELEASE: dev_hard_start_xmit() is allowed to | |
1599 | * release skb->dst | |
1600 | * @IFF_DONT_BRIDGE: disallow bridging this ether dev | |
1601 | * @IFF_DISABLE_NETPOLL: disable netpoll at run-time | |
1602 | * @IFF_MACVLAN_PORT: device used as macvlan port | |
1603 | * @IFF_BRIDGE_PORT: device used as bridge port | |
1604 | * @IFF_OVS_DATAPATH: device used as Open vSwitch datapath port | |
1605 | * @IFF_TX_SKB_SHARING: The interface supports sharing skbs on transmit | |
1606 | * @IFF_UNICAST_FLT: Supports unicast filtering | |
1607 | * @IFF_TEAM_PORT: device used as team port | |
1608 | * @IFF_SUPP_NOFCS: device supports sending custom FCS | |
1609 | * @IFF_LIVE_ADDR_CHANGE: device supports hardware address | |
1610 | * change when it's running | |
1611 | * @IFF_MACVLAN: Macvlan device | |
6d0e24cd LB |
1612 | * @IFF_XMIT_DST_RELEASE_PERM: IFF_XMIT_DST_RELEASE not taking into account |
1613 | * underlying stacked devices | |
007979ea | 1614 | * @IFF_L3MDEV_MASTER: device is an L3 master device |
fa8187c9 | 1615 | * @IFF_NO_QUEUE: device can run without qdisc attached |
35d4e172 | 1616 | * @IFF_OPENVSWITCH: device is a Open vSwitch master |
fee6d4c7 | 1617 | * @IFF_L3MDEV_SLAVE: device is enslaved to an L3 master device |
c981e421 | 1618 | * @IFF_TEAM: device is a team device |
d4ab4286 | 1619 | * @IFF_RXFH_CONFIGURED: device has had Rx Flow indirection table configured |
871b642a PA |
1620 | * @IFF_PHONY_HEADROOM: the headroom value is controlled by an external |
1621 | * entity (i.e. the master device for bridged veth) | |
3c175784 | 1622 | * @IFF_MACSEC: device is a MACsec device |
f5426250 | 1623 | * @IFF_NO_RX_HANDLER: device doesn't support the rx_handler hook |
30c8bd5a SS |
1624 | * @IFF_FAILOVER: device is a failover master device |
1625 | * @IFF_FAILOVER_SLAVE: device is lower dev of a failover master device | |
d5256083 | 1626 | * @IFF_L3MDEV_RX_HANDLER: only invoke the rx handler of L3 master device |
8065a779 | 1627 | * @IFF_LIVE_RENAME_OK: rename is allowed while device is up and running |
c2ff53d8 XZ |
1628 | * @IFF_TX_SKB_NO_LINEAR: device/driver is capable of xmitting frames with |
1629 | * skb_headlen(skb) == 0 (data starts from frag0) | |
2106efda | 1630 | * @IFF_CHANGE_PROTO_DOWN: device supports setting carrier via IFLA_PROTO_DOWN |
7aa98047 LR |
1631 | */ |
1632 | enum netdev_priv_flags { | |
1633 | IFF_802_1Q_VLAN = 1<<0, | |
1634 | IFF_EBRIDGE = 1<<1, | |
0dc1549b JP |
1635 | IFF_BONDING = 1<<2, |
1636 | IFF_ISATAP = 1<<3, | |
1637 | IFF_WAN_HDLC = 1<<4, | |
1638 | IFF_XMIT_DST_RELEASE = 1<<5, | |
1639 | IFF_DONT_BRIDGE = 1<<6, | |
1640 | IFF_DISABLE_NETPOLL = 1<<7, | |
1641 | IFF_MACVLAN_PORT = 1<<8, | |
1642 | IFF_BRIDGE_PORT = 1<<9, | |
1643 | IFF_OVS_DATAPATH = 1<<10, | |
1644 | IFF_TX_SKB_SHARING = 1<<11, | |
1645 | IFF_UNICAST_FLT = 1<<12, | |
1646 | IFF_TEAM_PORT = 1<<13, | |
1647 | IFF_SUPP_NOFCS = 1<<14, | |
1648 | IFF_LIVE_ADDR_CHANGE = 1<<15, | |
1649 | IFF_MACVLAN = 1<<16, | |
1650 | IFF_XMIT_DST_RELEASE_PERM = 1<<17, | |
1ec54cb4 PA |
1651 | IFF_L3MDEV_MASTER = 1<<18, |
1652 | IFF_NO_QUEUE = 1<<19, | |
1653 | IFF_OPENVSWITCH = 1<<20, | |
1654 | IFF_L3MDEV_SLAVE = 1<<21, | |
1655 | IFF_TEAM = 1<<22, | |
1656 | IFF_RXFH_CONFIGURED = 1<<23, | |
1657 | IFF_PHONY_HEADROOM = 1<<24, | |
1658 | IFF_MACSEC = 1<<25, | |
f5426250 | 1659 | IFF_NO_RX_HANDLER = 1<<26, |
30c8bd5a SS |
1660 | IFF_FAILOVER = 1<<27, |
1661 | IFF_FAILOVER_SLAVE = 1<<28, | |
d5256083 | 1662 | IFF_L3MDEV_RX_HANDLER = 1<<29, |
8065a779 | 1663 | IFF_LIVE_RENAME_OK = 1<<30, |
c2ff53d8 | 1664 | IFF_TX_SKB_NO_LINEAR = 1<<31, |
2106efda | 1665 | IFF_CHANGE_PROTO_DOWN = BIT_ULL(32), |
7aa98047 LR |
1666 | }; |
1667 | ||
1668 | #define IFF_802_1Q_VLAN IFF_802_1Q_VLAN | |
1669 | #define IFF_EBRIDGE IFF_EBRIDGE | |
7aa98047 | 1670 | #define IFF_BONDING IFF_BONDING |
7aa98047 | 1671 | #define IFF_ISATAP IFF_ISATAP |
7aa98047 LR |
1672 | #define IFF_WAN_HDLC IFF_WAN_HDLC |
1673 | #define IFF_XMIT_DST_RELEASE IFF_XMIT_DST_RELEASE | |
1674 | #define IFF_DONT_BRIDGE IFF_DONT_BRIDGE | |
1675 | #define IFF_DISABLE_NETPOLL IFF_DISABLE_NETPOLL | |
1676 | #define IFF_MACVLAN_PORT IFF_MACVLAN_PORT | |
1677 | #define IFF_BRIDGE_PORT IFF_BRIDGE_PORT | |
1678 | #define IFF_OVS_DATAPATH IFF_OVS_DATAPATH | |
1679 | #define IFF_TX_SKB_SHARING IFF_TX_SKB_SHARING | |
1680 | #define IFF_UNICAST_FLT IFF_UNICAST_FLT | |
1681 | #define IFF_TEAM_PORT IFF_TEAM_PORT | |
1682 | #define IFF_SUPP_NOFCS IFF_SUPP_NOFCS | |
1683 | #define IFF_LIVE_ADDR_CHANGE IFF_LIVE_ADDR_CHANGE | |
1684 | #define IFF_MACVLAN IFF_MACVLAN | |
02875878 | 1685 | #define IFF_XMIT_DST_RELEASE_PERM IFF_XMIT_DST_RELEASE_PERM |
007979ea | 1686 | #define IFF_L3MDEV_MASTER IFF_L3MDEV_MASTER |
fa8187c9 | 1687 | #define IFF_NO_QUEUE IFF_NO_QUEUE |
35d4e172 | 1688 | #define IFF_OPENVSWITCH IFF_OPENVSWITCH |
8f25348b | 1689 | #define IFF_L3MDEV_SLAVE IFF_L3MDEV_SLAVE |
c981e421 | 1690 | #define IFF_TEAM IFF_TEAM |
d4ab4286 | 1691 | #define IFF_RXFH_CONFIGURED IFF_RXFH_CONFIGURED |
2463e073 | 1692 | #define IFF_PHONY_HEADROOM IFF_PHONY_HEADROOM |
3c175784 | 1693 | #define IFF_MACSEC IFF_MACSEC |
f5426250 | 1694 | #define IFF_NO_RX_HANDLER IFF_NO_RX_HANDLER |
30c8bd5a SS |
1695 | #define IFF_FAILOVER IFF_FAILOVER |
1696 | #define IFF_FAILOVER_SLAVE IFF_FAILOVER_SLAVE | |
d5256083 | 1697 | #define IFF_L3MDEV_RX_HANDLER IFF_L3MDEV_RX_HANDLER |
8065a779 | 1698 | #define IFF_LIVE_RENAME_OK IFF_LIVE_RENAME_OK |
c2ff53d8 | 1699 | #define IFF_TX_SKB_NO_LINEAR IFF_TX_SKB_NO_LINEAR |
7aa98047 | 1700 | |
4e096a18 OR |
1701 | /* Specifies the type of the struct net_device::ml_priv pointer */ |
1702 | enum netdev_ml_priv_type { | |
1703 | ML_PRIV_NONE, | |
1704 | ML_PRIV_CAN, | |
1705 | }; | |
1706 | ||
536721b1 KK |
1707 | /** |
1708 | * struct net_device - The DEVICE structure. | |
d651983d MCC |
1709 | * |
1710 | * Actually, this whole structure is a big mistake. It mixes I/O | |
1711 | * data with strictly "high-level" data, and it has to know about | |
1712 | * almost every data structure used in the INET module. | |
536721b1 KK |
1713 | * |
1714 | * @name: This is the first field of the "visible" part of this structure | |
1715 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
d651983d | 1716 | * of the interface. |
536721b1 | 1717 | * |
ff927412 | 1718 | * @name_node: Name hashlist node |
536721b1 KK |
1719 | * @ifalias: SNMP alias |
1720 | * @mem_end: Shared memory end | |
1721 | * @mem_start: Shared memory start | |
1722 | * @base_addr: Device I/O address | |
1723 | * @irq: Device IRQ number | |
1724 | * | |
1725 | * @state: Generic network queuing layer state, see netdev_state_t | |
1726 | * @dev_list: The global list of network devices | |
5e82b4b2 BH |
1727 | * @napi_list: List entry used for polling NAPI devices |
1728 | * @unreg_list: List entry when we are unregistering the | |
1729 | * device; see the function unregister_netdev | |
1730 | * @close_list: List entry used when we are closing the device | |
62d885fe BP |
1731 | * @ptype_all: Device-specific packet handlers for all protocols |
1732 | * @ptype_specific: Device-specific, protocol-specific packet handlers | |
536721b1 KK |
1733 | * |
1734 | * @adj_list: Directly linked devices, like slaves for bonding | |
536721b1 KK |
1735 | * @features: Currently active device features |
1736 | * @hw_features: User-changeable features | |
1737 | * | |
1738 | * @wanted_features: User-requested features | |
1739 | * @vlan_features: Mask of features inheritable by VLAN devices | |
1740 | * | |
1741 | * @hw_enc_features: Mask of features inherited by encapsulating devices | |
1742 | * This field indicates what encapsulation | |
1743 | * offloads the hardware is capable of doing, | |
1744 | * and drivers will need to set them appropriately. | |
1745 | * | |
1746 | * @mpls_features: Mask of features inheritable by MPLS | |
a1fa83bd | 1747 | * @gso_partial_features: value(s) from NETIF_F_GSO\* |
536721b1 KK |
1748 | * |
1749 | * @ifindex: interface index | |
5e82b4b2 | 1750 | * @group: The group the device belongs to |
536721b1 KK |
1751 | * |
1752 | * @stats: Statistics struct, which was left as a legacy, use | |
1753 | * rtnl_link_stats64 instead | |
1754 | * | |
625788b5 | 1755 | * @core_stats: core networking counters, |
536721b1 | 1756 | * do not use this in drivers |
9e55e5d3 FF |
1757 | * @carrier_up_count: Number of times the carrier has been up |
1758 | * @carrier_down_count: Number of times the carrier has been down | |
536721b1 | 1759 | * |
536721b1 KK |
1760 | * @wireless_handlers: List of functions to handle Wireless Extensions, |
1761 | * instead of ioctl, | |
1762 | * see <net/iw_handler.h> for details. | |
1763 | * @wireless_data: Instance data managed by the core of wireless extensions | |
1764 | * | |
1765 | * @netdev_ops: Includes several pointers to callbacks, | |
1766 | * if one wants to override the ndo_*() functions | |
1767 | * @ethtool_ops: Management operations | |
a1fa83bd | 1768 | * @l3mdev_ops: Layer 3 master device operations |
f997c55c AA |
1769 | * @ndisc_ops: Includes callbacks for different IPv6 neighbour |
1770 | * discovery handling. Necessary for e.g. 6LoWPAN. | |
a1fa83bd RD |
1771 | * @xfrmdev_ops: Transformation offload operations |
1772 | * @tlsdev_ops: Transport Layer Security offload operations | |
d476059e | 1773 | * @header_ops: Includes callbacks for creating,parsing,caching,etc |
536721b1 KK |
1774 | * of Layer 2 headers. |
1775 | * | |
1776 | * @flags: Interface flags (a la BSD) | |
1777 | * @priv_flags: Like 'flags' but invisible to userspace, | |
1778 | * see if.h for the definitions | |
1779 | * @gflags: Global flags ( kept as legacy ) | |
1780 | * @padded: How much padding added by alloc_netdev() | |
1781 | * @operstate: RFC2863 operstate | |
1782 | * @link_mode: Mapping policy to operstate | |
1783 | * @if_port: Selectable AUI, TP, ... | |
1784 | * @dma: DMA channel | |
1785 | * @mtu: Interface MTU value | |
61e84623 JW |
1786 | * @min_mtu: Interface Minimum MTU value |
1787 | * @max_mtu: Interface Maximum MTU value | |
536721b1 | 1788 | * @type: Interface hardware type |
2793a23a | 1789 | * @hard_header_len: Maximum hardware header length. |
217e6fa2 | 1790 | * @min_header_len: Minimum hardware header length |
536721b1 KK |
1791 | * |
1792 | * @needed_headroom: Extra headroom the hardware may need, but not in all | |
1793 | * cases can this be guaranteed | |
1794 | * @needed_tailroom: Extra tailroom the hardware may need, but not in all | |
1795 | * cases can this be guaranteed. Some cases also use | |
1796 | * LL_MAX_HEADER instead to allocate the skb | |
1797 | * | |
1798 | * interface address info: | |
1799 | * | |
1800 | * @perm_addr: Permanent hw address | |
1801 | * @addr_assign_type: Hw address assignment type | |
1802 | * @addr_len: Hardware address length | |
5343da4c TY |
1803 | * @upper_level: Maximum depth level of upper devices. |
1804 | * @lower_level: Maximum depth level of lower devices. | |
8626a0c8 | 1805 | * @neigh_priv_len: Used in neigh_alloc() |
536721b1 KK |
1806 | * @dev_id: Used to differentiate devices that share |
1807 | * the same link layer address | |
1808 | * @dev_port: Used to differentiate devices that share | |
1809 | * the same function | |
1810 | * @addr_list_lock: XXX: need comments on this one | |
a1fa83bd | 1811 | * @name_assign_type: network interface name assignment type |
5e82b4b2 | 1812 | * @uc_promisc: Counter that indicates promiscuous mode |
536721b1 KK |
1813 | * has been enabled due to the need to listen to |
1814 | * additional unicast addresses in a device that | |
1815 | * does not implement ndo_set_rx_mode() | |
14ffbbb8 TG |
1816 | * @uc: unicast mac addresses |
1817 | * @mc: multicast mac addresses | |
1818 | * @dev_addrs: list of device hw addresses | |
1819 | * @queues_kset: Group of all Kobjects in the Tx and RX queues | |
5e82b4b2 BH |
1820 | * @promiscuity: Number of times the NIC is told to work in |
1821 | * promiscuous mode; if it becomes 0 the NIC will | |
1822 | * exit promiscuous mode | |
536721b1 KK |
1823 | * @allmulti: Counter, enables or disables allmulticast mode |
1824 | * | |
1825 | * @vlan_info: VLAN info | |
1826 | * @dsa_ptr: dsa specific data | |
1827 | * @tipc_ptr: TIPC specific data | |
1828 | * @atalk_ptr: AppleTalk link | |
1829 | * @ip_ptr: IPv4 specific data | |
1830 | * @dn_ptr: DECnet specific data | |
1831 | * @ip6_ptr: IPv6 specific data | |
1832 | * @ax25_ptr: AX.25 specific data | |
1833 | * @ieee80211_ptr: IEEE 802.11 specific data, assign before registering | |
a1fa83bd RD |
1834 | * @ieee802154_ptr: IEEE 802.15.4 low-rate Wireless Personal Area Network |
1835 | * device struct | |
1836 | * @mpls_ptr: mpls_dev struct pointer | |
583be982 | 1837 | * @mctp_ptr: MCTP specific data |
536721b1 | 1838 | * |
536721b1 KK |
1839 | * @dev_addr: Hw address (before bcast, |
1840 | * because most packets are unicast) | |
1841 | * | |
1842 | * @_rx: Array of RX queues | |
1843 | * @num_rx_queues: Number of RX queues | |
1844 | * allocated at register_netdev() time | |
1845 | * @real_num_rx_queues: Number of RX queues currently active in device | |
a1fa83bd RD |
1846 | * @xdp_prog: XDP sockets filter program pointer |
1847 | * @gro_flush_timeout: timeout for GRO layer in NAPI | |
5c45a918 MCC |
1848 | * @napi_defer_hard_irqs: If not zero, provides a counter that would |
1849 | * allow to avoid NIC hard IRQ, on busy queues. | |
536721b1 KK |
1850 | * |
1851 | * @rx_handler: handler for received packets | |
1852 | * @rx_handler_data: XXX: need comments on this one | |
46209401 JP |
1853 | * @miniq_ingress: ingress/clsact qdisc specific data for |
1854 | * ingress processing | |
536721b1 | 1855 | * @ingress_queue: XXX: need comments on this one |
2f5e70c8 | 1856 | * @nf_hooks_ingress: netfilter hooks executed for ingress packets |
536721b1 KK |
1857 | * @broadcast: hw bcast address |
1858 | * | |
14ffbbb8 TG |
1859 | * @rx_cpu_rmap: CPU reverse-mapping for RX completion interrupts, |
1860 | * indexed by RX queue number. Assigned by driver. | |
1861 | * This must only be set if the ndo_rx_flow_steer | |
1862 | * operation is defined | |
1863 | * @index_hlist: Device index hash chain | |
1864 | * | |
536721b1 KK |
1865 | * @_tx: Array of TX queues |
1866 | * @num_tx_queues: Number of TX queues allocated at alloc_netdev_mq() time | |
1867 | * @real_num_tx_queues: Number of TX queues currently active in device | |
1868 | * @qdisc: Root qdisc from userspace point of view | |
1869 | * @tx_queue_len: Max frames per queue allowed | |
1870 | * @tx_global_lock: XXX: need comments on this one | |
a1fa83bd | 1871 | * @xdp_bulkq: XDP device bulk queue |
044ab86d | 1872 | * @xps_maps: all CPUs/RXQs maps for XPS device |
536721b1 KK |
1873 | * |
1874 | * @xps_maps: XXX: need comments on this one | |
46209401 JP |
1875 | * @miniq_egress: clsact qdisc specific data for |
1876 | * egress processing | |
42df6e1d | 1877 | * @nf_hooks_egress: netfilter hooks executed for egress packets |
a1fa83bd | 1878 | * @qdisc_hash: qdisc hash table |
536721b1 | 1879 | * @watchdog_timeo: Represents the timeout that is used by |
5e82b4b2 | 1880 | * the watchdog (see dev_watchdog()) |
536721b1 KK |
1881 | * @watchdog_timer: List of timers |
1882 | * | |
eb02d39a | 1883 | * @proto_down_reason: reason a netdev interface is held down |
536721b1 | 1884 | * @pcpu_refcnt: Number of references to this device |
add2d736 | 1885 | * @dev_refcnt: Number of references to this device |
4d92b95f | 1886 | * @refcnt_tracker: Tracker directory for tracked references to this device |
536721b1 | 1887 | * @todo_list: Delayed register/unregister |
536721b1 KK |
1888 | * @link_watch_list: XXX: need comments on this one |
1889 | * | |
1890 | * @reg_state: Register/unregister state machine | |
1891 | * @dismantle: Device is going to be freed | |
1892 | * @rtnl_link_state: This enum represents the phases of creating | |
1893 | * a new link | |
1894 | * | |
cf124db5 DM |
1895 | * @needs_free_netdev: Should unregister perform free_netdev? |
1896 | * @priv_destructor: Called from unregister | |
536721b1 KK |
1897 | * @npinfo: XXX: need comments on this one |
1898 | * @nd_net: Network namespace this network device is inside | |
1899 | * | |
1900 | * @ml_priv: Mid-layer private | |
4e096a18 | 1901 | * @ml_priv_type: Mid-layer private type |
536721b1 KK |
1902 | * @lstats: Loopback statistics |
1903 | * @tstats: Tunnel statistics | |
1904 | * @dstats: Dummy statistics | |
1905 | * @vstats: Virtual ethernet statistics | |
1906 | * | |
1907 | * @garp_port: GARP | |
1908 | * @mrp_port: MRP | |
1909 | * | |
4a0cb83b JK |
1910 | * @dm_private: Drop monitor private |
1911 | * | |
536721b1 KK |
1912 | * @dev: Class/net/name entry |
1913 | * @sysfs_groups: Space for optional device, statistics and wireless | |
1914 | * sysfs groups | |
1915 | * | |
1916 | * @sysfs_rx_queue_group: Space for optional per-rx queue attributes | |
1917 | * @rtnl_link_ops: Rtnl_link_ops | |
1918 | * | |
1919 | * @gso_max_size: Maximum size of generic segmentation offload | |
1920 | * @gso_max_segs: Maximum number of segments that can be passed to the | |
1921 | * NIC for GSO | |
1922 | * | |
1923 | * @dcbnl_ops: Data Center Bridging netlink ops | |
1924 | * @num_tc: Number of traffic classes in the net device | |
1925 | * @tc_to_txq: XXX: need comments on this one | |
920c1cd3 | 1926 | * @prio_tc_map: XXX: need comments on this one |
536721b1 KK |
1927 | * |
1928 | * @fcoe_ddp_xid: Max exchange id for FCoE LRO by ddp | |
1929 | * | |
1930 | * @priomap: XXX: need comments on this one | |
1931 | * @phydev: Physical device may attach itself | |
1932 | * for hardware timestamping | |
e679c9c1 | 1933 | * @sfp_bus: attached &struct sfp_bus structure. |
1a33e10e | 1934 | * |
1a33e10e | 1935 | * @qdisc_tx_busylock: lockdep class annotating Qdisc->busylock spinlock |
536721b1 | 1936 | * |
d746d707 AK |
1937 | * @proto_down: protocol port state information can be sent to the |
1938 | * switch driver and used to set the phys state of the | |
1939 | * switch port. | |
1940 | * | |
61941143 HK |
1941 | * @wol_enabled: Wake-on-LAN is enabled |
1942 | * | |
29863d41 WW |
1943 | * @threaded: napi threaded mode is enabled |
1944 | * | |
93642e14 JP |
1945 | * @net_notifier_list: List of per-net netdev notifier block |
1946 | * that follow this device when it is moved | |
1947 | * to another network namespace. | |
1948 | * | |
30e9bb84 AT |
1949 | * @macsec_ops: MACsec offloading ops |
1950 | * | |
cc4e3835 JK |
1951 | * @udp_tunnel_nic_info: static structure describing the UDP tunnel |
1952 | * offload capabilities of the device | |
1953 | * @udp_tunnel_nic: UDP tunnel offload state | |
ffa59b0b | 1954 | * @xdp_state: stores info on attached XDP BPF programs |
cc4e3835 | 1955 | * |
b62e3317 | 1956 | * @nested_level: Used as a parameter of spin_lock_nested() of |
a93bdcb9 MCC |
1957 | * dev->addr_list_lock. |
1958 | * @unlink_list: As netif_addr_lock() can be called recursively, | |
1959 | * keep a list of interfaces to be deleted. | |
eac1b93c CL |
1960 | * @gro_max_size: Maximum size of aggregated packet in generic |
1961 | * receive offload (GRO) | |
a93bdcb9 | 1962 | * |
d07b26f5 | 1963 | * @dev_addr_shadow: Copy of @dev_addr to catch direct writes. |
63f13937 | 1964 | * @linkwatch_dev_tracker: refcount tracker used by linkwatch. |
f12bf6f3 | 1965 | * @watchdog_dev_tracker: refcount tracker used by watchdog. |
b2309a71 ED |
1966 | * @dev_registered_tracker: tracker for reference held while |
1967 | * registered | |
9309f97a | 1968 | * @offload_xstats_l3: L3 HW stats for this netdevice. |
d07b26f5 | 1969 | * |
1da177e4 LT |
1970 | * FIXME: cleanup struct net_device such that network protocol info |
1971 | * moves out. | |
1972 | */ | |
1973 | ||
d94d9fee | 1974 | struct net_device { |
1da177e4 | 1975 | char name[IFNAMSIZ]; |
ff927412 | 1976 | struct netdev_name_node *name_node; |
6c557001 | 1977 | struct dev_ifalias __rcu *ifalias; |
1da177e4 LT |
1978 | /* |
1979 | * I/O specific fields | |
1980 | * FIXME: Merge these and struct ifmap into one | |
1981 | */ | |
536721b1 KK |
1982 | unsigned long mem_end; |
1983 | unsigned long mem_start; | |
1984 | unsigned long base_addr; | |
1da177e4 LT |
1985 | |
1986 | /* | |
536721b1 KK |
1987 | * Some hardware also needs these fields (state,dev_list, |
1988 | * napi_list,unreg_list,close_list) but they are not | |
1da177e4 LT |
1989 | * part of the usual set specified in Space.c. |
1990 | */ | |
1991 | ||
1da177e4 LT |
1992 | unsigned long state; |
1993 | ||
7562f876 | 1994 | struct list_head dev_list; |
bea3348e | 1995 | struct list_head napi_list; |
44a0873d | 1996 | struct list_head unreg_list; |
5cde2829 | 1997 | struct list_head close_list; |
7866a621 SN |
1998 | struct list_head ptype_all; |
1999 | struct list_head ptype_specific; | |
2f268f12 | 2000 | |
2f268f12 VF |
2001 | struct { |
2002 | struct list_head upper; | |
2003 | struct list_head lower; | |
2004 | } adj_list; | |
2005 | ||
28af22c6 JDB |
2006 | /* Read-mostly cache-line for fast-path access */ |
2007 | unsigned int flags; | |
2106efda | 2008 | unsigned long long priv_flags; |
28af22c6 JDB |
2009 | const struct net_device_ops *netdev_ops; |
2010 | int ifindex; | |
2011 | unsigned short gflags; | |
2012 | unsigned short hard_header_len; | |
2013 | ||
2014 | /* Note : dev->mtu is often read without holding a lock. | |
2015 | * Writers usually hold RTNL. | |
2016 | * It is recommended to use READ_ONCE() to annotate the reads, | |
2017 | * and to use WRITE_ONCE() to annotate the writes. | |
2018 | */ | |
2019 | unsigned int mtu; | |
2020 | unsigned short needed_headroom; | |
2021 | unsigned short needed_tailroom; | |
2022 | ||
c8f44aff | 2023 | netdev_features_t features; |
c8f44aff | 2024 | netdev_features_t hw_features; |
c8f44aff | 2025 | netdev_features_t wanted_features; |
c8f44aff | 2026 | netdev_features_t vlan_features; |
6a674e9c | 2027 | netdev_features_t hw_enc_features; |
0d89d203 | 2028 | netdev_features_t mpls_features; |
802ab55a | 2029 | netdev_features_t gso_partial_features; |
04ed3e74 | 2030 | |
28af22c6 JDB |
2031 | unsigned int min_mtu; |
2032 | unsigned int max_mtu; | |
2033 | unsigned short type; | |
2034 | unsigned char min_header_len; | |
2035 | unsigned char name_assign_type; | |
2036 | ||
7a66bbc9 | 2037 | int group; |
1da177e4 | 2038 | |
28af22c6 | 2039 | struct net_device_stats stats; /* not used by modern drivers */ |
015f0688 | 2040 | |
625788b5 | 2041 | struct net_device_core_stats __percpu *core_stats; |
1da177e4 | 2042 | |
b2d3bcfa DD |
2043 | /* Stats to monitor link on/off, flapping */ |
2044 | atomic_t carrier_up_count; | |
2045 | atomic_t carrier_down_count; | |
2046 | ||
b86e0280 | 2047 | #ifdef CONFIG_WIRELESS_EXT |
5e82b4b2 BH |
2048 | const struct iw_handler_def *wireless_handlers; |
2049 | struct iw_public_data *wireless_data; | |
b86e0280 | 2050 | #endif |
76fd8593 | 2051 | const struct ethtool_ops *ethtool_ops; |
1b69c6d0 DA |
2052 | #ifdef CONFIG_NET_L3_MASTER_DEV |
2053 | const struct l3mdev_ops *l3mdev_ops; | |
2054 | #endif | |
f997c55c AA |
2055 | #if IS_ENABLED(CONFIG_IPV6) |
2056 | const struct ndisc_ops *ndisc_ops; | |
2057 | #endif | |
1da177e4 | 2058 | |
9cb0d21d | 2059 | #ifdef CONFIG_XFRM_OFFLOAD |
d77e38e6 SK |
2060 | const struct xfrmdev_ops *xfrmdev_ops; |
2061 | #endif | |
2062 | ||
a5c37c63 IL |
2063 | #if IS_ENABLED(CONFIG_TLS_DEVICE) |
2064 | const struct tlsdev_ops *tlsdev_ops; | |
2065 | #endif | |
2066 | ||
3b04ddde SH |
2067 | const struct header_ops *header_ops; |
2068 | ||
536721b1 KK |
2069 | unsigned char operstate; |
2070 | unsigned char link_mode; | |
b00055aa | 2071 | |
536721b1 KK |
2072 | unsigned char if_port; |
2073 | unsigned char dma; | |
bdc220da | 2074 | |
1da177e4 | 2075 | /* Interface address info. */ |
536721b1 KK |
2076 | unsigned char perm_addr[MAX_ADDR_LEN]; |
2077 | unsigned char addr_assign_type; | |
2078 | unsigned char addr_len; | |
5343da4c TY |
2079 | unsigned char upper_level; |
2080 | unsigned char lower_level; | |
1fc70edb | 2081 | |
a0a9663d | 2082 | unsigned short neigh_priv_len; |
536721b1 KK |
2083 | unsigned short dev_id; |
2084 | unsigned short dev_port; | |
28af22c6 JDB |
2085 | unsigned short padded; |
2086 | ||
ccffad25 | 2087 | spinlock_t addr_list_lock; |
28af22c6 | 2088 | int irq; |
1fc70edb | 2089 | |
536721b1 KK |
2090 | struct netdev_hw_addr_list uc; |
2091 | struct netdev_hw_addr_list mc; | |
2092 | struct netdev_hw_addr_list dev_addrs; | |
2093 | ||
4c3d5e7b ED |
2094 | #ifdef CONFIG_SYSFS |
2095 | struct kset *queues_kset; | |
1fc70edb TY |
2096 | #endif |
2097 | #ifdef CONFIG_LOCKDEP | |
2098 | struct list_head unlink_list; | |
4c3d5e7b | 2099 | #endif |
9d45abe1 WC |
2100 | unsigned int promiscuity; |
2101 | unsigned int allmulti; | |
1fc70edb TY |
2102 | bool uc_promisc; |
2103 | #ifdef CONFIG_LOCKDEP | |
2104 | unsigned char nested_level; | |
2105 | #endif | |
1da177e4 | 2106 | |
1da177e4 | 2107 | |
5e82b4b2 | 2108 | /* Protocol-specific pointers */ |
65ac6a5f | 2109 | |
d11ead75 | 2110 | #if IS_ENABLED(CONFIG_VLAN_8021Q) |
536721b1 | 2111 | struct vlan_info __rcu *vlan_info; |
65ac6a5f | 2112 | #endif |
34a430d7 | 2113 | #if IS_ENABLED(CONFIG_NET_DSA) |
2f657a60 | 2114 | struct dsa_port *dsa_ptr; |
37cb0620 YX |
2115 | #endif |
2116 | #if IS_ENABLED(CONFIG_TIPC) | |
536721b1 | 2117 | struct tipc_bearer __rcu *tipc_ptr; |
91da11f8 | 2118 | #endif |
d6c6d0bb | 2119 | #if IS_ENABLED(CONFIG_ATALK) |
536721b1 | 2120 | void *atalk_ptr; |
89e58148 | 2121 | #endif |
536721b1 | 2122 | struct in_device __rcu *ip_ptr; |
330c7272 | 2123 | #if IS_ENABLED(CONFIG_DECNET) |
536721b1 | 2124 | struct dn_dev __rcu *dn_ptr; |
330c7272 | 2125 | #endif |
536721b1 | 2126 | struct inet6_dev __rcu *ip6_ptr; |
19ff13f2 | 2127 | #if IS_ENABLED(CONFIG_AX25) |
536721b1 | 2128 | void *ax25_ptr; |
19ff13f2 | 2129 | #endif |
536721b1 | 2130 | struct wireless_dev *ieee80211_ptr; |
98a18b6f | 2131 | struct wpan_dev *ieee802154_ptr; |
03c57747 RS |
2132 | #if IS_ENABLED(CONFIG_MPLS_ROUTING) |
2133 | struct mpls_dev __rcu *mpls_ptr; | |
2134 | #endif | |
583be982 JK |
2135 | #if IS_ENABLED(CONFIG_MCTP) |
2136 | struct mctp_dev __rcu *mctp_ptr; | |
2137 | #endif | |
1da177e4 | 2138 | |
9356b8fc | 2139 | /* |
cd13539b | 2140 | * Cache lines mostly used on receive path (including eth_type_trans()) |
9356b8fc | 2141 | */ |
9356b8fc | 2142 | /* Interface address info used in eth_type_trans() */ |
adeef3e3 | 2143 | const unsigned char *dev_addr; |
f001fde5 | 2144 | |
0a9627f2 | 2145 | struct netdev_rx_queue *_rx; |
0a9627f2 | 2146 | unsigned int num_rx_queues; |
62fe0b40 | 2147 | unsigned int real_num_rx_queues; |
0a9627f2 | 2148 | |
7acedaf5 | 2149 | struct bpf_prog __rcu *xdp_prog; |
3b47d303 | 2150 | unsigned long gro_flush_timeout; |
6f8b12d6 | 2151 | int napi_defer_hard_irqs; |
eac1b93c CL |
2152 | #define GRO_MAX_SIZE 65536 |
2153 | unsigned int gro_max_size; | |
61391cde | 2154 | rx_handler_func_t __rcu *rx_handler; |
2155 | void __rcu *rx_handler_data; | |
e8a0464c | 2156 | |
4cda01e8 | 2157 | #ifdef CONFIG_NET_CLS_ACT |
46209401 | 2158 | struct mini_Qdisc __rcu *miniq_ingress; |
d2788d34 | 2159 | #endif |
24824a09 | 2160 | struct netdev_queue __rcu *ingress_queue; |
e687ad60 | 2161 | #ifdef CONFIG_NETFILTER_INGRESS |
960632ec | 2162 | struct nf_hook_entries __rcu *nf_hooks_ingress; |
e687ad60 | 2163 | #endif |
d2788d34 | 2164 | |
536721b1 | 2165 | unsigned char broadcast[MAX_ADDR_LEN]; |
14ffbbb8 TG |
2166 | #ifdef CONFIG_RFS_ACCEL |
2167 | struct cpu_rmap *rx_cpu_rmap; | |
2168 | #endif | |
2169 | struct hlist_node index_hlist; | |
cd13539b ED |
2170 | |
2171 | /* | |
2172 | * Cache lines mostly used on transmit path | |
2173 | */ | |
e8a0464c DM |
2174 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
2175 | unsigned int num_tx_queues; | |
fd2ea0a7 | 2176 | unsigned int real_num_tx_queues; |
5891cd5e | 2177 | struct Qdisc __rcu *qdisc; |
0cd29503 | 2178 | unsigned int tx_queue_len; |
c3f26a26 | 2179 | spinlock_t tx_global_lock; |
75ccae62 THJ |
2180 | |
2181 | struct xdp_dev_bulk_queue __percpu *xdp_bulkq; | |
cd13539b | 2182 | |
bf264145 | 2183 | #ifdef CONFIG_XPS |
044ab86d | 2184 | struct xps_dev_maps __rcu *xps_maps[XPS_MAPS_MAX]; |
bf264145 | 2185 | #endif |
1f211a1b | 2186 | #ifdef CONFIG_NET_CLS_ACT |
46209401 | 2187 | struct mini_Qdisc __rcu *miniq_egress; |
1f211a1b | 2188 | #endif |
42df6e1d LW |
2189 | #ifdef CONFIG_NETFILTER_EGRESS |
2190 | struct nf_hook_entries __rcu *nf_hooks_egress; | |
2191 | #endif | |
0c4f691f | 2192 | |
75ccae62 THJ |
2193 | #ifdef CONFIG_NET_SCHED |
2194 | DECLARE_HASHTABLE (qdisc_hash, 4); | |
2195 | #endif | |
9356b8fc | 2196 | /* These may be needed for future network-power-down code. */ |
9356b8fc | 2197 | struct timer_list watchdog_timer; |
75ccae62 | 2198 | int watchdog_timeo; |
9356b8fc | 2199 | |
829eb208 RP |
2200 | u32 proto_down_reason; |
2201 | ||
1da177e4 | 2202 | struct list_head todo_list; |
919067cc ED |
2203 | |
2204 | #ifdef CONFIG_PCPU_DEV_REFCNT | |
75ccae62 | 2205 | int __percpu *pcpu_refcnt; |
919067cc ED |
2206 | #else |
2207 | refcount_t dev_refcnt; | |
2208 | #endif | |
4d92b95f | 2209 | struct ref_tracker_dir refcnt_tracker; |
1da177e4 | 2210 | |
e014debe | 2211 | struct list_head link_watch_list; |
572a103d | 2212 | |
1da177e4 | 2213 | enum { NETREG_UNINITIALIZED=0, |
b17a7c17 | 2214 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
2215 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
2216 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
2217 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 2218 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
449f4544 ED |
2219 | } reg_state:8; |
2220 | ||
536721b1 | 2221 | bool dismantle; |
a2835763 PM |
2222 | |
2223 | enum { | |
2224 | RTNL_LINK_INITIALIZED, | |
2225 | RTNL_LINK_INITIALIZING, | |
2226 | } rtnl_link_state:16; | |
1da177e4 | 2227 | |
cf124db5 DM |
2228 | bool needs_free_netdev; |
2229 | void (*priv_destructor)(struct net_device *dev); | |
1da177e4 | 2230 | |
1da177e4 | 2231 | #ifdef CONFIG_NETPOLL |
5fbee843 | 2232 | struct netpoll_info __rcu *npinfo; |
1da177e4 | 2233 | #endif |
eae792b7 | 2234 | |
0c5c9fb5 | 2235 | possible_net_t nd_net; |
4a1c5371 | 2236 | |
4951704b | 2237 | /* mid-layer private */ |
4e096a18 OR |
2238 | void *ml_priv; |
2239 | enum netdev_ml_priv_type ml_priv_type; | |
2240 | ||
a7855c78 | 2241 | union { |
536721b1 | 2242 | struct pcpu_lstats __percpu *lstats; |
8f84985f | 2243 | struct pcpu_sw_netstats __percpu *tstats; |
536721b1 | 2244 | struct pcpu_dstats __percpu *dstats; |
a7855c78 | 2245 | }; |
536721b1 | 2246 | |
fb585b44 | 2247 | #if IS_ENABLED(CONFIG_GARP) |
3cc77ec7 | 2248 | struct garp_port __rcu *garp_port; |
fb585b44 TK |
2249 | #endif |
2250 | #if IS_ENABLED(CONFIG_MRP) | |
febf018d | 2251 | struct mrp_port __rcu *mrp_port; |
fb585b44 | 2252 | #endif |
b26ef81c ED |
2253 | #if IS_ENABLED(CONFIG_NET_DROP_MONITOR) |
2254 | struct dm_hw_stat_delta __rcu *dm_private; | |
2255 | #endif | |
5e82b4b2 | 2256 | struct device dev; |
0c509a6c | 2257 | const struct attribute_group *sysfs_groups[4]; |
a953be53 | 2258 | const struct attribute_group *sysfs_rx_queue_group; |
38f7b870 | 2259 | |
38f7b870 | 2260 | const struct rtnl_link_ops *rtnl_link_ops; |
f25f4e44 | 2261 | |
82cc1a7a PWJ |
2262 | /* for setting kernel sock attribute on TCP connection setup */ |
2263 | #define GSO_MAX_SIZE 65536 | |
2264 | unsigned int gso_max_size; | |
30b678d8 BH |
2265 | #define GSO_MAX_SEGS 65535 |
2266 | u16 gso_max_segs; | |
743b03a8 | 2267 | |
7a6b6f51 | 2268 | #ifdef CONFIG_DCB |
32953543 | 2269 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
2f90b865 | 2270 | #endif |
ffcfe25b | 2271 | s16 num_tc; |
5e82b4b2 BH |
2272 | struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE]; |
2273 | u8 prio_tc_map[TC_BITMASK + 1]; | |
2f90b865 | 2274 | |
d11ead75 | 2275 | #if IS_ENABLED(CONFIG_FCOE) |
4d288d57 | 2276 | unsigned int fcoe_ddp_xid; |
5bc1421e | 2277 | #endif |
86f8515f | 2278 | #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO) |
5bc1421e | 2279 | struct netprio_map __rcu *priomap; |
4d288d57 | 2280 | #endif |
5e82b4b2 | 2281 | struct phy_device *phydev; |
e679c9c1 | 2282 | struct sfp_bus *sfp_bus; |
1a33e10e | 2283 | struct lock_class_key *qdisc_tx_busylock; |
5e82b4b2 | 2284 | bool proto_down; |
61941143 | 2285 | unsigned wol_enabled:1; |
29863d41 | 2286 | unsigned threaded:1; |
93642e14 JP |
2287 | |
2288 | struct list_head net_notifier_list; | |
30e9bb84 AT |
2289 | |
2290 | #if IS_ENABLED(CONFIG_MACSEC) | |
2291 | /* MACsec management functions */ | |
2292 | const struct macsec_ops *macsec_ops; | |
2293 | #endif | |
cc4e3835 JK |
2294 | const struct udp_tunnel_nic_info *udp_tunnel_nic_info; |
2295 | struct udp_tunnel_nic *udp_tunnel_nic; | |
7f0a8382 AN |
2296 | |
2297 | /* protected by rtnl_lock */ | |
2298 | struct bpf_xdp_entity xdp_state[__MAX_XDP_MODE]; | |
d07b26f5 JK |
2299 | |
2300 | u8 dev_addr_shadow[MAX_ADDR_LEN]; | |
63f13937 | 2301 | netdevice_tracker linkwatch_dev_tracker; |
f12bf6f3 | 2302 | netdevice_tracker watchdog_dev_tracker; |
b2309a71 | 2303 | netdevice_tracker dev_registered_tracker; |
9309f97a | 2304 | struct rtnl_hw_stats64 *offload_xstats_l3; |
1da177e4 | 2305 | }; |
43cb76d9 | 2306 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 | 2307 | |
b5cdae32 DM |
2308 | static inline bool netif_elide_gro(const struct net_device *dev) |
2309 | { | |
2310 | if (!(dev->features & NETIF_F_GRO) || dev->xdp_prog) | |
2311 | return true; | |
2312 | return false; | |
2313 | } | |
2314 | ||
1da177e4 | 2315 | #define NETDEV_ALIGN 32 |
1da177e4 | 2316 | |
4f57c087 JF |
2317 | static inline |
2318 | int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio) | |
2319 | { | |
2320 | return dev->prio_tc_map[prio & TC_BITMASK]; | |
2321 | } | |
2322 | ||
2323 | static inline | |
2324 | int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc) | |
2325 | { | |
2326 | if (tc >= dev->num_tc) | |
2327 | return -EINVAL; | |
2328 | ||
2329 | dev->prio_tc_map[prio & TC_BITMASK] = tc & TC_BITMASK; | |
2330 | return 0; | |
2331 | } | |
2332 | ||
8d059b0f | 2333 | int netdev_txq_to_tc(struct net_device *dev, unsigned int txq); |
9cf1f6a8 AD |
2334 | void netdev_reset_tc(struct net_device *dev); |
2335 | int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset); | |
2336 | int netdev_set_num_tc(struct net_device *dev, u8 num_tc); | |
4f57c087 JF |
2337 | |
2338 | static inline | |
2339 | int netdev_get_num_tc(struct net_device *dev) | |
2340 | { | |
2341 | return dev->num_tc; | |
2342 | } | |
2343 | ||
f468f21b TT |
2344 | static inline void net_prefetch(void *p) |
2345 | { | |
2346 | prefetch(p); | |
2347 | #if L1_CACHE_BYTES < 128 | |
2348 | prefetch((u8 *)p + L1_CACHE_BYTES); | |
2349 | #endif | |
2350 | } | |
2351 | ||
2352 | static inline void net_prefetchw(void *p) | |
2353 | { | |
2354 | prefetchw(p); | |
2355 | #if L1_CACHE_BYTES < 128 | |
2356 | prefetchw((u8 *)p + L1_CACHE_BYTES); | |
2357 | #endif | |
2358 | } | |
2359 | ||
ffcfe25b AD |
2360 | void netdev_unbind_sb_channel(struct net_device *dev, |
2361 | struct net_device *sb_dev); | |
2362 | int netdev_bind_sb_channel_queue(struct net_device *dev, | |
2363 | struct net_device *sb_dev, | |
2364 | u8 tc, u16 count, u16 offset); | |
2365 | int netdev_set_sb_channel(struct net_device *dev, u16 channel); | |
2366 | static inline int netdev_get_sb_channel(struct net_device *dev) | |
2367 | { | |
2368 | return max_t(int, -dev->num_tc, 0); | |
2369 | } | |
2370 | ||
e8a0464c DM |
2371 | static inline |
2372 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
2373 | unsigned int index) | |
2374 | { | |
2375 | return &dev->_tx[index]; | |
2376 | } | |
2377 | ||
10c51b56 DB |
2378 | static inline struct netdev_queue *skb_get_tx_queue(const struct net_device *dev, |
2379 | const struct sk_buff *skb) | |
2380 | { | |
2381 | return netdev_get_tx_queue(dev, skb_get_queue_mapping(skb)); | |
2382 | } | |
2383 | ||
e8a0464c DM |
2384 | static inline void netdev_for_each_tx_queue(struct net_device *dev, |
2385 | void (*f)(struct net_device *, | |
2386 | struct netdev_queue *, | |
2387 | void *), | |
2388 | void *arg) | |
2389 | { | |
2390 | unsigned int i; | |
2391 | ||
2392 | for (i = 0; i < dev->num_tx_queues; i++) | |
2393 | f(dev, &dev->_tx[i], arg); | |
2394 | } | |
2395 | ||
1a33e10e CW |
2396 | #define netdev_lockdep_set_classes(dev) \ |
2397 | { \ | |
2398 | static struct lock_class_key qdisc_tx_busylock_key; \ | |
1a33e10e | 2399 | static struct lock_class_key qdisc_xmit_lock_key; \ |
845e0ebb | 2400 | static struct lock_class_key dev_addr_list_lock_key; \ |
1a33e10e CW |
2401 | unsigned int i; \ |
2402 | \ | |
2403 | (dev)->qdisc_tx_busylock = &qdisc_tx_busylock_key; \ | |
845e0ebb CW |
2404 | lockdep_set_class(&(dev)->addr_list_lock, \ |
2405 | &dev_addr_list_lock_key); \ | |
1a33e10e CW |
2406 | for (i = 0; i < (dev)->num_tx_queues; i++) \ |
2407 | lockdep_set_class(&(dev)->_tx[i]._xmit_lock, \ | |
2408 | &qdisc_xmit_lock_key); \ | |
2409 | } | |
2410 | ||
b71b5837 PA |
2411 | u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb, |
2412 | struct net_device *sb_dev); | |
4bd97d51 PA |
2413 | struct netdev_queue *netdev_core_pick_tx(struct net_device *dev, |
2414 | struct sk_buff *skb, | |
2415 | struct net_device *sb_dev); | |
8c4c49df | 2416 | |
871b642a PA |
2417 | /* returns the headroom that the master device needs to take in account |
2418 | * when forwarding to this dev | |
2419 | */ | |
2420 | static inline unsigned netdev_get_fwd_headroom(struct net_device *dev) | |
2421 | { | |
2422 | return dev->priv_flags & IFF_PHONY_HEADROOM ? 0 : dev->needed_headroom; | |
2423 | } | |
2424 | ||
2425 | static inline void netdev_set_rx_headroom(struct net_device *dev, int new_hr) | |
2426 | { | |
2427 | if (dev->netdev_ops->ndo_set_rx_headroom) | |
2428 | dev->netdev_ops->ndo_set_rx_headroom(dev, new_hr); | |
2429 | } | |
2430 | ||
2431 | /* set the device rx headroom to the dev's default */ | |
2432 | static inline void netdev_reset_rx_headroom(struct net_device *dev) | |
2433 | { | |
2434 | netdev_set_rx_headroom(dev, -1); | |
2435 | } | |
2436 | ||
4e096a18 OR |
2437 | static inline void *netdev_get_ml_priv(struct net_device *dev, |
2438 | enum netdev_ml_priv_type type) | |
2439 | { | |
2440 | if (dev->ml_priv_type != type) | |
2441 | return NULL; | |
2442 | ||
2443 | return dev->ml_priv; | |
2444 | } | |
2445 | ||
2446 | static inline void netdev_set_ml_priv(struct net_device *dev, | |
2447 | void *ml_priv, | |
2448 | enum netdev_ml_priv_type type) | |
2449 | { | |
2450 | WARN(dev->ml_priv_type && dev->ml_priv_type != type, | |
2451 | "Overwriting already set ml_priv_type (%u) with different ml_priv_type (%u)!\n", | |
2452 | dev->ml_priv_type, type); | |
2453 | WARN(!dev->ml_priv_type && dev->ml_priv, | |
2454 | "Overwriting already set ml_priv and ml_priv_type is ML_PRIV_NONE!\n"); | |
2455 | ||
2456 | dev->ml_priv = ml_priv; | |
2457 | dev->ml_priv_type = type; | |
2458 | } | |
2459 | ||
c346dca1 YH |
2460 | /* |
2461 | * Net namespace inlines | |
2462 | */ | |
2463 | static inline | |
2464 | struct net *dev_net(const struct net_device *dev) | |
2465 | { | |
c2d9ba9b | 2466 | return read_pnet(&dev->nd_net); |
c346dca1 YH |
2467 | } |
2468 | ||
2469 | static inline | |
f5aa23fd | 2470 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 | 2471 | { |
0c5c9fb5 | 2472 | write_pnet(&dev->nd_net, net); |
c346dca1 YH |
2473 | } |
2474 | ||
bea3348e SH |
2475 | /** |
2476 | * netdev_priv - access network device private data | |
2477 | * @dev: network device | |
2478 | * | |
2479 | * Get network device private data | |
2480 | */ | |
6472ce60 | 2481 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 2482 | { |
1ce8e7b5 | 2483 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
1da177e4 LT |
2484 | } |
2485 | ||
1da177e4 LT |
2486 | /* Set the sysfs physical device reference for the network logical device |
2487 | * if set prior to registration will cause a symlink during initialization. | |
2488 | */ | |
43cb76d9 | 2489 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 2490 | |
384912ed | 2491 | /* Set the sysfs device type for the network logical device to allow |
3f79410c | 2492 | * fine-grained identification of different network device types. For |
5e82b4b2 | 2493 | * example Ethernet, Wireless LAN, Bluetooth, WiMAX etc. |
384912ed MH |
2494 | */ |
2495 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) | |
2496 | ||
82dc3c63 ED |
2497 | /* Default NAPI poll() weight |
2498 | * Device drivers are strongly advised to not use bigger value | |
2499 | */ | |
2500 | #define NAPI_POLL_WEIGHT 64 | |
2501 | ||
3b582cc1 | 2502 | /** |
5e82b4b2 | 2503 | * netif_napi_add - initialize a NAPI context |
3b582cc1 | 2504 | * @dev: network device |
5e82b4b2 | 2505 | * @napi: NAPI context |
3b582cc1 SH |
2506 | * @poll: polling function |
2507 | * @weight: default weight | |
2508 | * | |
5e82b4b2 BH |
2509 | * netif_napi_add() must be used to initialize a NAPI context prior to calling |
2510 | * *any* of the other NAPI-related functions. | |
3b582cc1 | 2511 | */ |
d565b0a1 HX |
2512 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
2513 | int (*poll)(struct napi_struct *, int), int weight); | |
bea3348e | 2514 | |
d64b5e85 | 2515 | /** |
5e82b4b2 | 2516 | * netif_tx_napi_add - initialize a NAPI context |
d64b5e85 | 2517 | * @dev: network device |
5e82b4b2 | 2518 | * @napi: NAPI context |
d64b5e85 ED |
2519 | * @poll: polling function |
2520 | * @weight: default weight | |
2521 | * | |
2522 | * This variant of netif_napi_add() should be used from drivers using NAPI | |
2523 | * to exclusively poll a TX queue. | |
2524 | * This will avoid we add it into napi_hash[], thus polluting this hash table. | |
2525 | */ | |
2526 | static inline void netif_tx_napi_add(struct net_device *dev, | |
2527 | struct napi_struct *napi, | |
2528 | int (*poll)(struct napi_struct *, int), | |
2529 | int weight) | |
2530 | { | |
2531 | set_bit(NAPI_STATE_NO_BUSY_POLL, &napi->state); | |
2532 | netif_napi_add(dev, napi, poll, weight); | |
2533 | } | |
2534 | ||
5198d545 JK |
2535 | /** |
2536 | * __netif_napi_del - remove a NAPI context | |
2537 | * @napi: NAPI context | |
2538 | * | |
2539 | * Warning: caller must observe RCU grace period before freeing memory | |
2540 | * containing @napi. Drivers might want to call this helper to combine | |
2541 | * all the needed RCU grace periods into a single one. | |
2542 | */ | |
2543 | void __netif_napi_del(struct napi_struct *napi); | |
2544 | ||
d8156534 | 2545 | /** |
5e82b4b2 BH |
2546 | * netif_napi_del - remove a NAPI context |
2547 | * @napi: NAPI context | |
d8156534 | 2548 | * |
5e82b4b2 | 2549 | * netif_napi_del() removes a NAPI context from the network device NAPI list |
d8156534 | 2550 | */ |
5198d545 JK |
2551 | static inline void netif_napi_del(struct napi_struct *napi) |
2552 | { | |
2553 | __netif_napi_del(napi); | |
2554 | synchronize_net(); | |
2555 | } | |
d565b0a1 | 2556 | |
1da177e4 | 2557 | struct packet_type { |
f2ccd8fa | 2558 | __be16 type; /* This is really htons(ether_type). */ |
fa788d98 | 2559 | bool ignore_outgoing; |
f2ccd8fa | 2560 | struct net_device *dev; /* NULL is wildcarded here */ |
f1d9268e | 2561 | netdevice_tracker dev_tracker; |
f2ccd8fa DM |
2562 | int (*func) (struct sk_buff *, |
2563 | struct net_device *, | |
2564 | struct packet_type *, | |
2565 | struct net_device *); | |
17266ee9 EC |
2566 | void (*list_func) (struct list_head *, |
2567 | struct packet_type *, | |
2568 | struct net_device *); | |
c0de08d0 EL |
2569 | bool (*id_match)(struct packet_type *ptype, |
2570 | struct sock *sk); | |
47934e06 | 2571 | struct net *af_packet_net; |
1da177e4 LT |
2572 | void *af_packet_priv; |
2573 | struct list_head list; | |
2574 | }; | |
2575 | ||
f191a1d1 | 2576 | struct offload_callbacks { |
576a30eb | 2577 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
c8f44aff | 2578 | netdev_features_t features); |
d4546c25 DM |
2579 | struct sk_buff *(*gro_receive)(struct list_head *head, |
2580 | struct sk_buff *skb); | |
299603e8 | 2581 | int (*gro_complete)(struct sk_buff *skb, int nhoff); |
f191a1d1 VY |
2582 | }; |
2583 | ||
2584 | struct packet_offload { | |
2585 | __be16 type; /* This is really htons(ether_type). */ | |
bdef7de4 | 2586 | u16 priority; |
f191a1d1 VY |
2587 | struct offload_callbacks callbacks; |
2588 | struct list_head list; | |
1da177e4 LT |
2589 | }; |
2590 | ||
5e82b4b2 | 2591 | /* often modified stats are per-CPU, other are shared (netdev->stats) */ |
8f84985f LR |
2592 | struct pcpu_sw_netstats { |
2593 | u64 rx_packets; | |
2594 | u64 rx_bytes; | |
2595 | u64 tx_packets; | |
2596 | u64 tx_bytes; | |
2597 | struct u64_stats_sync syncp; | |
9a5ee462 | 2598 | } __aligned(4 * sizeof(u64)); |
52bb6677 LR |
2599 | |
2600 | struct pcpu_lstats { | |
fd2f4737 ED |
2601 | u64_stats_t packets; |
2602 | u64_stats_t bytes; | |
52bb6677 | 2603 | struct u64_stats_sync syncp; |
9a5ee462 | 2604 | } __aligned(2 * sizeof(u64)); |
8f84985f | 2605 | |
de7d5084 ED |
2606 | void dev_lstats_read(struct net_device *dev, u64 *packets, u64 *bytes); |
2607 | ||
451b05f4 FF |
2608 | static inline void dev_sw_netstats_rx_add(struct net_device *dev, unsigned int len) |
2609 | { | |
2610 | struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats); | |
2611 | ||
2612 | u64_stats_update_begin(&tstats->syncp); | |
2613 | tstats->rx_bytes += len; | |
2614 | tstats->rx_packets++; | |
2615 | u64_stats_update_end(&tstats->syncp); | |
2616 | } | |
2617 | ||
d3fd6548 HK |
2618 | static inline void dev_sw_netstats_tx_add(struct net_device *dev, |
2619 | unsigned int packets, | |
2620 | unsigned int len) | |
2621 | { | |
2622 | struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats); | |
2623 | ||
2624 | u64_stats_update_begin(&tstats->syncp); | |
2625 | tstats->tx_bytes += len; | |
2626 | tstats->tx_packets += packets; | |
2627 | u64_stats_update_end(&tstats->syncp); | |
2628 | } | |
2629 | ||
dd5382a0 ED |
2630 | static inline void dev_lstats_add(struct net_device *dev, unsigned int len) |
2631 | { | |
2632 | struct pcpu_lstats *lstats = this_cpu_ptr(dev->lstats); | |
2633 | ||
2634 | u64_stats_update_begin(&lstats->syncp); | |
fd2f4737 ED |
2635 | u64_stats_add(&lstats->bytes, len); |
2636 | u64_stats_inc(&lstats->packets); | |
dd5382a0 ED |
2637 | u64_stats_update_end(&lstats->syncp); |
2638 | } | |
2639 | ||
aabc92bb PNA |
2640 | #define __netdev_alloc_pcpu_stats(type, gfp) \ |
2641 | ({ \ | |
2642 | typeof(type) __percpu *pcpu_stats = alloc_percpu_gfp(type, gfp);\ | |
2643 | if (pcpu_stats) { \ | |
2644 | int __cpu; \ | |
2645 | for_each_possible_cpu(__cpu) { \ | |
2646 | typeof(type) *stat; \ | |
2647 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ | |
2648 | u64_stats_init(&stat->syncp); \ | |
2649 | } \ | |
2650 | } \ | |
2651 | pcpu_stats; \ | |
1c213bd2 WC |
2652 | }) |
2653 | ||
aabc92bb | 2654 | #define netdev_alloc_pcpu_stats(type) \ |
326fcfa5 | 2655 | __netdev_alloc_pcpu_stats(type, GFP_KERNEL) |
aabc92bb | 2656 | |
81b01894 HK |
2657 | #define devm_netdev_alloc_pcpu_stats(dev, type) \ |
2658 | ({ \ | |
2659 | typeof(type) __percpu *pcpu_stats = devm_alloc_percpu(dev, type);\ | |
2660 | if (pcpu_stats) { \ | |
2661 | int __cpu; \ | |
2662 | for_each_possible_cpu(__cpu) { \ | |
2663 | typeof(type) *stat; \ | |
2664 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ | |
2665 | u64_stats_init(&stat->syncp); \ | |
2666 | } \ | |
2667 | } \ | |
2668 | pcpu_stats; \ | |
2669 | }) | |
2670 | ||
764f5e54 JP |
2671 | enum netdev_lag_tx_type { |
2672 | NETDEV_LAG_TX_TYPE_UNKNOWN, | |
2673 | NETDEV_LAG_TX_TYPE_RANDOM, | |
2674 | NETDEV_LAG_TX_TYPE_BROADCAST, | |
2675 | NETDEV_LAG_TX_TYPE_ROUNDROBIN, | |
2676 | NETDEV_LAG_TX_TYPE_ACTIVEBACKUP, | |
2677 | NETDEV_LAG_TX_TYPE_HASH, | |
2678 | }; | |
2679 | ||
f44aa9ef JH |
2680 | enum netdev_lag_hash { |
2681 | NETDEV_LAG_HASH_NONE, | |
2682 | NETDEV_LAG_HASH_L2, | |
2683 | NETDEV_LAG_HASH_L34, | |
2684 | NETDEV_LAG_HASH_L23, | |
2685 | NETDEV_LAG_HASH_E23, | |
2686 | NETDEV_LAG_HASH_E34, | |
7b8fc010 | 2687 | NETDEV_LAG_HASH_VLAN_SRCMAC, |
f44aa9ef JH |
2688 | NETDEV_LAG_HASH_UNKNOWN, |
2689 | }; | |
2690 | ||
764f5e54 JP |
2691 | struct netdev_lag_upper_info { |
2692 | enum netdev_lag_tx_type tx_type; | |
f44aa9ef | 2693 | enum netdev_lag_hash hash_type; |
764f5e54 JP |
2694 | }; |
2695 | ||
fb1b2e3c JP |
2696 | struct netdev_lag_lower_state_info { |
2697 | u8 link_up : 1, | |
2698 | tx_enabled : 1; | |
2699 | }; | |
2700 | ||
1da177e4 LT |
2701 | #include <linux/notifier.h> |
2702 | ||
ede2762d KT |
2703 | /* netdevice notifier chain. Please remember to update netdev_cmd_to_name() |
2704 | * and the rtnetlink notification exclusion list in rtnetlink_event() when | |
2705 | * adding new types. | |
dcfe1421 | 2706 | */ |
ede2762d KT |
2707 | enum netdev_cmd { |
2708 | NETDEV_UP = 1, /* For now you can't veto a device up/down */ | |
2709 | NETDEV_DOWN, | |
2710 | NETDEV_REBOOT, /* Tell a protocol stack a network interface | |
dcfe1421 AW |
2711 | detected a hardware crash and restarted |
2712 | - we can use this eg to kick tcp sessions | |
2713 | once done */ | |
ede2762d KT |
2714 | NETDEV_CHANGE, /* Notify device state change */ |
2715 | NETDEV_REGISTER, | |
2716 | NETDEV_UNREGISTER, | |
2717 | NETDEV_CHANGEMTU, /* notify after mtu change happened */ | |
1570415f PM |
2718 | NETDEV_CHANGEADDR, /* notify after the address change */ |
2719 | NETDEV_PRE_CHANGEADDR, /* notify before the address change */ | |
ede2762d KT |
2720 | NETDEV_GOING_DOWN, |
2721 | NETDEV_CHANGENAME, | |
2722 | NETDEV_FEAT_CHANGE, | |
2723 | NETDEV_BONDING_FAILOVER, | |
2724 | NETDEV_PRE_UP, | |
2725 | NETDEV_PRE_TYPE_CHANGE, | |
2726 | NETDEV_POST_TYPE_CHANGE, | |
2727 | NETDEV_POST_INIT, | |
ede2762d KT |
2728 | NETDEV_RELEASE, |
2729 | NETDEV_NOTIFY_PEERS, | |
2730 | NETDEV_JOIN, | |
2731 | NETDEV_CHANGEUPPER, | |
2732 | NETDEV_RESEND_IGMP, | |
2733 | NETDEV_PRECHANGEMTU, /* notify before mtu change happened */ | |
2734 | NETDEV_CHANGEINFODATA, | |
2735 | NETDEV_BONDING_INFO, | |
2736 | NETDEV_PRECHANGEUPPER, | |
2737 | NETDEV_CHANGELOWERSTATE, | |
2738 | NETDEV_UDP_TUNNEL_PUSH_INFO, | |
2739 | NETDEV_UDP_TUNNEL_DROP_INFO, | |
2740 | NETDEV_CHANGE_TX_QUEUE_LEN, | |
9daae9bd GP |
2741 | NETDEV_CVLAN_FILTER_PUSH_INFO, |
2742 | NETDEV_CVLAN_FILTER_DROP_INFO, | |
2743 | NETDEV_SVLAN_FILTER_PUSH_INFO, | |
2744 | NETDEV_SVLAN_FILTER_DROP_INFO, | |
9309f97a PM |
2745 | NETDEV_OFFLOAD_XSTATS_ENABLE, |
2746 | NETDEV_OFFLOAD_XSTATS_DISABLE, | |
2747 | NETDEV_OFFLOAD_XSTATS_REPORT_USED, | |
2748 | NETDEV_OFFLOAD_XSTATS_REPORT_DELTA, | |
ede2762d KT |
2749 | }; |
2750 | const char *netdev_cmd_to_name(enum netdev_cmd cmd); | |
dcfe1421 | 2751 | |
f629d208 JP |
2752 | int register_netdevice_notifier(struct notifier_block *nb); |
2753 | int unregister_netdevice_notifier(struct notifier_block *nb); | |
a30c7b42 JP |
2754 | int register_netdevice_notifier_net(struct net *net, struct notifier_block *nb); |
2755 | int unregister_netdevice_notifier_net(struct net *net, | |
2756 | struct notifier_block *nb); | |
93642e14 JP |
2757 | int register_netdevice_notifier_dev_net(struct net_device *dev, |
2758 | struct notifier_block *nb, | |
2759 | struct netdev_net_notifier *nn); | |
2760 | int unregister_netdevice_notifier_dev_net(struct net_device *dev, | |
2761 | struct notifier_block *nb, | |
2762 | struct netdev_net_notifier *nn); | |
351638e7 JP |
2763 | |
2764 | struct netdev_notifier_info { | |
51d0c047 DA |
2765 | struct net_device *dev; |
2766 | struct netlink_ext_ack *extack; | |
351638e7 JP |
2767 | }; |
2768 | ||
af7d6cce SD |
2769 | struct netdev_notifier_info_ext { |
2770 | struct netdev_notifier_info info; /* must be first */ | |
2771 | union { | |
2772 | u32 mtu; | |
2773 | } ext; | |
2774 | }; | |
2775 | ||
be9efd36 JP |
2776 | struct netdev_notifier_change_info { |
2777 | struct netdev_notifier_info info; /* must be first */ | |
2778 | unsigned int flags_changed; | |
2779 | }; | |
2780 | ||
0e4ead9d JP |
2781 | struct netdev_notifier_changeupper_info { |
2782 | struct netdev_notifier_info info; /* must be first */ | |
2783 | struct net_device *upper_dev; /* new upper dev */ | |
2784 | bool master; /* is upper dev master */ | |
5e82b4b2 | 2785 | bool linking; /* is the notification for link or unlink */ |
29bf24af | 2786 | void *upper_info; /* upper dev info */ |
0e4ead9d JP |
2787 | }; |
2788 | ||
04d48266 JP |
2789 | struct netdev_notifier_changelowerstate_info { |
2790 | struct netdev_notifier_info info; /* must be first */ | |
2791 | void *lower_state_info; /* is lower dev state */ | |
2792 | }; | |
2793 | ||
1570415f PM |
2794 | struct netdev_notifier_pre_changeaddr_info { |
2795 | struct netdev_notifier_info info; /* must be first */ | |
2796 | const unsigned char *dev_addr; | |
2797 | }; | |
2798 | ||
9309f97a PM |
2799 | enum netdev_offload_xstats_type { |
2800 | NETDEV_OFFLOAD_XSTATS_TYPE_L3 = 1, | |
2801 | }; | |
2802 | ||
2803 | struct netdev_notifier_offload_xstats_info { | |
2804 | struct netdev_notifier_info info; /* must be first */ | |
2805 | enum netdev_offload_xstats_type type; | |
2806 | ||
2807 | union { | |
2808 | /* NETDEV_OFFLOAD_XSTATS_REPORT_DELTA */ | |
2809 | struct netdev_notifier_offload_xstats_rd *report_delta; | |
2810 | /* NETDEV_OFFLOAD_XSTATS_REPORT_USED */ | |
2811 | struct netdev_notifier_offload_xstats_ru *report_used; | |
2812 | }; | |
2813 | }; | |
2814 | ||
2815 | int netdev_offload_xstats_enable(struct net_device *dev, | |
2816 | enum netdev_offload_xstats_type type, | |
2817 | struct netlink_ext_ack *extack); | |
2818 | int netdev_offload_xstats_disable(struct net_device *dev, | |
2819 | enum netdev_offload_xstats_type type); | |
2820 | bool netdev_offload_xstats_enabled(const struct net_device *dev, | |
2821 | enum netdev_offload_xstats_type type); | |
2822 | int netdev_offload_xstats_get(struct net_device *dev, | |
2823 | enum netdev_offload_xstats_type type, | |
2824 | struct rtnl_hw_stats64 *stats, bool *used, | |
2825 | struct netlink_ext_ack *extack); | |
2826 | void | |
2827 | netdev_offload_xstats_report_delta(struct netdev_notifier_offload_xstats_rd *rd, | |
2828 | const struct rtnl_hw_stats64 *stats); | |
2829 | void | |
2830 | netdev_offload_xstats_report_used(struct netdev_notifier_offload_xstats_ru *ru); | |
2831 | void netdev_offload_xstats_push_delta(struct net_device *dev, | |
2832 | enum netdev_offload_xstats_type type, | |
2833 | const struct rtnl_hw_stats64 *stats); | |
2834 | ||
75538c2b CW |
2835 | static inline void netdev_notifier_info_init(struct netdev_notifier_info *info, |
2836 | struct net_device *dev) | |
2837 | { | |
2838 | info->dev = dev; | |
51d0c047 | 2839 | info->extack = NULL; |
75538c2b CW |
2840 | } |
2841 | ||
351638e7 JP |
2842 | static inline struct net_device * |
2843 | netdev_notifier_info_to_dev(const struct netdev_notifier_info *info) | |
2844 | { | |
2845 | return info->dev; | |
2846 | } | |
2847 | ||
51d0c047 DA |
2848 | static inline struct netlink_ext_ack * |
2849 | netdev_notifier_info_to_extack(const struct netdev_notifier_info *info) | |
2850 | { | |
2851 | return info->extack; | |
2852 | } | |
2853 | ||
f629d208 | 2854 | int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
dcfe1421 AW |
2855 | |
2856 | ||
1da177e4 LT |
2857 | extern rwlock_t dev_base_lock; /* Device list lock */ |
2858 | ||
881d966b EB |
2859 | #define for_each_netdev(net, d) \ |
2860 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
dcbccbd4 EB |
2861 | #define for_each_netdev_reverse(net, d) \ |
2862 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) | |
c6d14c84 ED |
2863 | #define for_each_netdev_rcu(net, d) \ |
2864 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b EB |
2865 | #define for_each_netdev_safe(net, d, n) \ |
2866 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
2867 | #define for_each_netdev_continue(net, d) \ | |
2868 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
afa0df59 JP |
2869 | #define for_each_netdev_continue_reverse(net, d) \ |
2870 | list_for_each_entry_continue_reverse(d, &(net)->dev_base_head, \ | |
2871 | dev_list) | |
254245d2 | 2872 | #define for_each_netdev_continue_rcu(net, d) \ |
2873 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) | |
8a7fbfab | 2874 | #define for_each_netdev_in_bond_rcu(bond, slave) \ |
2875 | for_each_netdev_rcu(&init_net, slave) \ | |
4ccce02e | 2876 | if (netdev_master_upper_dev_get_rcu(slave) == (bond)) |
881d966b | 2877 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
7562f876 | 2878 | |
a050c33f DL |
2879 | static inline struct net_device *next_net_device(struct net_device *dev) |
2880 | { | |
2881 | struct list_head *lh; | |
2882 | struct net *net; | |
2883 | ||
c346dca1 | 2884 | net = dev_net(dev); |
a050c33f DL |
2885 | lh = dev->dev_list.next; |
2886 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2887 | } | |
2888 | ||
ce81b76a ED |
2889 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
2890 | { | |
2891 | struct list_head *lh; | |
2892 | struct net *net; | |
2893 | ||
2894 | net = dev_net(dev); | |
ccf43438 | 2895 | lh = rcu_dereference(list_next_rcu(&dev->dev_list)); |
ce81b76a ED |
2896 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
2897 | } | |
2898 | ||
a050c33f DL |
2899 | static inline struct net_device *first_net_device(struct net *net) |
2900 | { | |
2901 | return list_empty(&net->dev_base_head) ? NULL : | |
2902 | net_device_entry(net->dev_base_head.next); | |
2903 | } | |
7562f876 | 2904 | |
ccf43438 ED |
2905 | static inline struct net_device *first_net_device_rcu(struct net *net) |
2906 | { | |
2907 | struct list_head *lh = rcu_dereference(list_next_rcu(&net->dev_base_head)); | |
2908 | ||
2909 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2910 | } | |
2911 | ||
f629d208 | 2912 | int netdev_boot_setup_check(struct net_device *dev); |
f629d208 JP |
2913 | struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, |
2914 | const char *hwaddr); | |
2915 | struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
f629d208 JP |
2916 | void dev_add_pack(struct packet_type *pt); |
2917 | void dev_remove_pack(struct packet_type *pt); | |
2918 | void __dev_remove_pack(struct packet_type *pt); | |
2919 | void dev_add_offload(struct packet_offload *po); | |
2920 | void dev_remove_offload(struct packet_offload *po); | |
f629d208 | 2921 | |
a54acb3a | 2922 | int dev_get_iflink(const struct net_device *dev); |
fc4099f1 | 2923 | int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb); |
ddb94eaf PNA |
2924 | int dev_fill_forward_path(const struct net_device *dev, const u8 *daddr, |
2925 | struct net_device_path_stack *stack); | |
6c555490 WC |
2926 | struct net_device *__dev_get_by_flags(struct net *net, unsigned short flags, |
2927 | unsigned short mask); | |
f629d208 JP |
2928 | struct net_device *dev_get_by_name(struct net *net, const char *name); |
2929 | struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); | |
2930 | struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
75ea27d0 | 2931 | bool netdev_name_in_use(struct net *net, const char *name); |
f629d208 | 2932 | int dev_alloc_name(struct net_device *dev, const char *name); |
00f54e68 | 2933 | int dev_open(struct net_device *dev, struct netlink_ext_ack *extack); |
7051b88a | 2934 | void dev_close(struct net_device *dev); |
2935 | void dev_close_many(struct list_head *head, bool unlink); | |
f629d208 | 2936 | void dev_disable_lro(struct net_device *dev); |
0c4b51f0 | 2937 | int dev_loopback_xmit(struct net *net, struct sock *sk, struct sk_buff *newskb); |
a4ea8a3d | 2938 | u16 dev_pick_tx_zero(struct net_device *dev, struct sk_buff *skb, |
a350ecce | 2939 | struct net_device *sb_dev); |
a4ea8a3d | 2940 | u16 dev_pick_tx_cpu_id(struct net_device *dev, struct sk_buff *skb, |
a350ecce | 2941 | struct net_device *sb_dev); |
36ccdf85 | 2942 | |
2b4aa3ce | 2943 | int dev_queue_xmit(struct sk_buff *skb); |
eadec877 | 2944 | int dev_queue_xmit_accel(struct sk_buff *skb, struct net_device *sb_dev); |
36ccdf85 BT |
2945 | int __dev_direct_xmit(struct sk_buff *skb, u16 queue_id); |
2946 | ||
2947 | static inline int dev_direct_xmit(struct sk_buff *skb, u16 queue_id) | |
2948 | { | |
2949 | int ret; | |
2950 | ||
2951 | ret = __dev_direct_xmit(skb, queue_id); | |
2952 | if (!dev_xmit_complete(ret)) | |
2953 | kfree_skb(skb); | |
2954 | return ret; | |
2955 | } | |
2956 | ||
f629d208 JP |
2957 | int register_netdevice(struct net_device *dev); |
2958 | void unregister_netdevice_queue(struct net_device *dev, struct list_head *head); | |
2959 | void unregister_netdevice_many(struct list_head *head); | |
44a0873d ED |
2960 | static inline void unregister_netdevice(struct net_device *dev) |
2961 | { | |
2962 | unregister_netdevice_queue(dev, NULL); | |
2963 | } | |
2964 | ||
f629d208 JP |
2965 | int netdev_refcnt_read(const struct net_device *dev); |
2966 | void free_netdev(struct net_device *dev); | |
74d332c1 | 2967 | void netdev_freemem(struct net_device *dev); |
f629d208 | 2968 | int init_dummy_netdev(struct net_device *dev); |
937f1ba5 | 2969 | |
cff9f12b MG |
2970 | struct net_device *netdev_get_xmit_slave(struct net_device *dev, |
2971 | struct sk_buff *skb, | |
2972 | bool all_slaves); | |
719a402c TT |
2973 | struct net_device *netdev_sk_get_lowest_dev(struct net_device *dev, |
2974 | struct sock *sk); | |
f629d208 JP |
2975 | struct net_device *dev_get_by_index(struct net *net, int ifindex); |
2976 | struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
2977 | struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); | |
90b602f8 | 2978 | struct net_device *dev_get_by_napi_id(unsigned int napi_id); |
f629d208 | 2979 | int dev_restart(struct net_device *dev); |
86911732 | 2980 | |
5f114163 | 2981 | |
0c4e8581 SH |
2982 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
2983 | unsigned short type, | |
3b04ddde | 2984 | const void *daddr, const void *saddr, |
95c96174 | 2985 | unsigned int len) |
0c4e8581 | 2986 | { |
f1ecfd5d | 2987 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 2988 | return 0; |
3b04ddde SH |
2989 | |
2990 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
2991 | } |
2992 | ||
b95cce35 SH |
2993 | static inline int dev_parse_header(const struct sk_buff *skb, |
2994 | unsigned char *haddr) | |
2995 | { | |
2996 | const struct net_device *dev = skb->dev; | |
2997 | ||
1b83336b | 2998 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 2999 | return 0; |
3b04ddde | 3000 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
3001 | } |
3002 | ||
e78b2915 MM |
3003 | static inline __be16 dev_parse_header_protocol(const struct sk_buff *skb) |
3004 | { | |
3005 | const struct net_device *dev = skb->dev; | |
3006 | ||
3007 | if (!dev->header_ops || !dev->header_ops->parse_protocol) | |
3008 | return 0; | |
3009 | return dev->header_ops->parse_protocol(skb); | |
3010 | } | |
3011 | ||
2793a23a WB |
3012 | /* ll_header must have at least hard_header_len allocated */ |
3013 | static inline bool dev_validate_header(const struct net_device *dev, | |
3014 | char *ll_header, int len) | |
3015 | { | |
3016 | if (likely(len >= dev->hard_header_len)) | |
3017 | return true; | |
217e6fa2 WB |
3018 | if (len < dev->min_header_len) |
3019 | return false; | |
2793a23a WB |
3020 | |
3021 | if (capable(CAP_SYS_RAWIO)) { | |
3022 | memset(ll_header + len, 0, dev->hard_header_len - len); | |
3023 | return true; | |
3024 | } | |
3025 | ||
3026 | if (dev->header_ops && dev->header_ops->validate) | |
3027 | return dev->header_ops->validate(ll_header, len); | |
3028 | ||
3029 | return false; | |
3030 | } | |
3031 | ||
d5496990 EB |
3032 | static inline bool dev_has_header(const struct net_device *dev) |
3033 | { | |
3034 | return dev->header_ops && dev->header_ops->create; | |
3035 | } | |
3036 | ||
1da177e4 | 3037 | /* |
5e82b4b2 | 3038 | * Incoming packets are placed on per-CPU queues |
1da177e4 | 3039 | */ |
d94d9fee | 3040 | struct softnet_data { |
1da177e4 | 3041 | struct list_head poll_list; |
6e7676c1 | 3042 | struct sk_buff_head process_queue; |
1da177e4 | 3043 | |
dee42870 | 3044 | /* stats */ |
cd7b5396 DM |
3045 | unsigned int processed; |
3046 | unsigned int time_squeeze; | |
cd7b5396 | 3047 | unsigned int received_rps; |
fd793d89 | 3048 | #ifdef CONFIG_RPS |
88751275 | 3049 | struct softnet_data *rps_ipi_list; |
4cdb1e2e ED |
3050 | #endif |
3051 | #ifdef CONFIG_NET_FLOW_LIMIT | |
3052 | struct sd_flow_limit __rcu *flow_limit; | |
3053 | #endif | |
3054 | struct Qdisc *output_queue; | |
3055 | struct Qdisc **output_queue_tailp; | |
3056 | struct sk_buff *completion_queue; | |
f53c7239 SK |
3057 | #ifdef CONFIG_XFRM_OFFLOAD |
3058 | struct sk_buff_head xfrm_backlog; | |
3059 | #endif | |
97cdcf37 FW |
3060 | /* written and read only by owning cpu: */ |
3061 | struct { | |
3062 | u16 recursion; | |
3063 | u8 more; | |
2f1e85b1 TZ |
3064 | #ifdef CONFIG_NET_EGRESS |
3065 | u8 skip_txqueue; | |
3066 | #endif | |
97cdcf37 | 3067 | } xmit; |
4cdb1e2e | 3068 | #ifdef CONFIG_RPS |
501e7ef5 ED |
3069 | /* input_queue_head should be written by cpu owning this struct, |
3070 | * and only read by other cpus. Worth using a cache line. | |
3071 | */ | |
3072 | unsigned int input_queue_head ____cacheline_aligned_in_smp; | |
3073 | ||
3074 | /* Elements below can be accessed between CPUs for RPS/RFS */ | |
966a9671 | 3075 | call_single_data_t csd ____cacheline_aligned_in_smp; |
88751275 ED |
3076 | struct softnet_data *rps_ipi_next; |
3077 | unsigned int cpu; | |
76cc8b13 | 3078 | unsigned int input_queue_tail; |
1e94d72f | 3079 | #endif |
95c96174 | 3080 | unsigned int dropped; |
0a9627f2 | 3081 | struct sk_buff_head input_pkt_queue; |
bea3348e | 3082 | struct napi_struct backlog; |
99bbc707 | 3083 | |
1da177e4 LT |
3084 | }; |
3085 | ||
76cc8b13 | 3086 | static inline void input_queue_head_incr(struct softnet_data *sd) |
fec5e652 TH |
3087 | { |
3088 | #ifdef CONFIG_RPS | |
76cc8b13 TH |
3089 | sd->input_queue_head++; |
3090 | #endif | |
3091 | } | |
3092 | ||
3093 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, | |
3094 | unsigned int *qtail) | |
3095 | { | |
3096 | #ifdef CONFIG_RPS | |
3097 | *qtail = ++sd->input_queue_tail; | |
fec5e652 TH |
3098 | #endif |
3099 | } | |
3100 | ||
0a9627f2 | 3101 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
1da177e4 | 3102 | |
97cdcf37 FW |
3103 | static inline int dev_recursion_level(void) |
3104 | { | |
28b05b92 | 3105 | return this_cpu_read(softnet_data.xmit.recursion); |
97cdcf37 FW |
3106 | } |
3107 | ||
fb7861d1 | 3108 | #define XMIT_RECURSION_LIMIT 8 |
97cdcf37 FW |
3109 | static inline bool dev_xmit_recursion(void) |
3110 | { | |
3111 | return unlikely(__this_cpu_read(softnet_data.xmit.recursion) > | |
3112 | XMIT_RECURSION_LIMIT); | |
3113 | } | |
3114 | ||
3115 | static inline void dev_xmit_recursion_inc(void) | |
3116 | { | |
3117 | __this_cpu_inc(softnet_data.xmit.recursion); | |
3118 | } | |
3119 | ||
3120 | static inline void dev_xmit_recursion_dec(void) | |
3121 | { | |
3122 | __this_cpu_dec(softnet_data.xmit.recursion); | |
3123 | } | |
3124 | ||
f629d208 | 3125 | void __netif_schedule(struct Qdisc *q); |
46e5da40 | 3126 | void netif_schedule_queue(struct netdev_queue *txq); |
86d804e1 | 3127 | |
fd2ea0a7 DM |
3128 | static inline void netif_tx_schedule_all(struct net_device *dev) |
3129 | { | |
3130 | unsigned int i; | |
3131 | ||
3132 | for (i = 0; i < dev->num_tx_queues; i++) | |
3133 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
3134 | } | |
3135 | ||
f9a7cbbf | 3136 | static __always_inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
d29f749e | 3137 | { |
73466498 | 3138 | clear_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3139 | } |
3140 | ||
bea3348e SH |
3141 | /** |
3142 | * netif_start_queue - allow transmit | |
3143 | * @dev: network device | |
3144 | * | |
3145 | * Allow upper layers to call the device hard_start_xmit routine. | |
3146 | */ | |
1da177e4 LT |
3147 | static inline void netif_start_queue(struct net_device *dev) |
3148 | { | |
e8a0464c | 3149 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3150 | } |
3151 | ||
fd2ea0a7 DM |
3152 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
3153 | { | |
3154 | unsigned int i; | |
3155 | ||
3156 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3157 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
3158 | netif_tx_start_queue(txq); | |
3159 | } | |
3160 | } | |
3161 | ||
46e5da40 | 3162 | void netif_tx_wake_queue(struct netdev_queue *dev_queue); |
79d16385 | 3163 | |
d29f749e DJ |
3164 | /** |
3165 | * netif_wake_queue - restart transmit | |
3166 | * @dev: network device | |
3167 | * | |
3168 | * Allow upper layers to call the device hard_start_xmit routine. | |
3169 | * Used for flow control when transmit resources are available. | |
3170 | */ | |
79d16385 DM |
3171 | static inline void netif_wake_queue(struct net_device *dev) |
3172 | { | |
e8a0464c | 3173 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3174 | } |
3175 | ||
fd2ea0a7 DM |
3176 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
3177 | { | |
3178 | unsigned int i; | |
3179 | ||
3180 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3181 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
3182 | netif_tx_wake_queue(txq); | |
3183 | } | |
3184 | } | |
3185 | ||
f9a7cbbf | 3186 | static __always_inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
d29f749e | 3187 | { |
73466498 | 3188 | set_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3189 | } |
3190 | ||
bea3348e SH |
3191 | /** |
3192 | * netif_stop_queue - stop transmitted packets | |
3193 | * @dev: network device | |
3194 | * | |
3195 | * Stop upper layers calling the device hard_start_xmit routine. | |
3196 | * Used for flow control when transmit resources are unavailable. | |
3197 | */ | |
1da177e4 LT |
3198 | static inline void netif_stop_queue(struct net_device *dev) |
3199 | { | |
e8a0464c | 3200 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3201 | } |
3202 | ||
a2029240 | 3203 | void netif_tx_stop_all_queues(struct net_device *dev); |
fd2ea0a7 | 3204 | |
4d29515f | 3205 | static inline bool netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
d29f749e | 3206 | { |
73466498 | 3207 | return test_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3208 | } |
3209 | ||
bea3348e SH |
3210 | /** |
3211 | * netif_queue_stopped - test if transmit queue is flowblocked | |
3212 | * @dev: network device | |
3213 | * | |
3214 | * Test if transmit queue on device is currently unable to send. | |
3215 | */ | |
4d29515f | 3216 | static inline bool netif_queue_stopped(const struct net_device *dev) |
1da177e4 | 3217 | { |
e8a0464c | 3218 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3219 | } |
3220 | ||
4d29515f | 3221 | static inline bool netif_xmit_stopped(const struct netdev_queue *dev_queue) |
c3f26a26 | 3222 | { |
73466498 TH |
3223 | return dev_queue->state & QUEUE_STATE_ANY_XOFF; |
3224 | } | |
3225 | ||
8e2f1a63 DB |
3226 | static inline bool |
3227 | netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue) | |
73466498 TH |
3228 | { |
3229 | return dev_queue->state & QUEUE_STATE_ANY_XOFF_OR_FROZEN; | |
3230 | } | |
3231 | ||
8e2f1a63 DB |
3232 | static inline bool |
3233 | netif_xmit_frozen_or_drv_stopped(const struct netdev_queue *dev_queue) | |
3234 | { | |
3235 | return dev_queue->state & QUEUE_STATE_DRV_XOFF_OR_FROZEN; | |
3236 | } | |
3237 | ||
f57bac3c VM |
3238 | /** |
3239 | * netdev_queue_set_dql_min_limit - set dql minimum limit | |
3240 | * @dev_queue: pointer to transmit queue | |
3241 | * @min_limit: dql minimum limit | |
3242 | * | |
3243 | * Forces xmit_more() to return true until the minimum threshold | |
3244 | * defined by @min_limit is reached (or until the tx queue is | |
3245 | * empty). Warning: to be use with care, misuse will impact the | |
3246 | * latency. | |
3247 | */ | |
3248 | static inline void netdev_queue_set_dql_min_limit(struct netdev_queue *dev_queue, | |
3249 | unsigned int min_limit) | |
3250 | { | |
3251 | #ifdef CONFIG_BQL | |
3252 | dev_queue->dql.min_limit = min_limit; | |
3253 | #endif | |
3254 | } | |
3255 | ||
53511453 ED |
3256 | /** |
3257 | * netdev_txq_bql_enqueue_prefetchw - prefetch bql data for write | |
3258 | * @dev_queue: pointer to transmit queue | |
3259 | * | |
3260 | * BQL enabled drivers might use this helper in their ndo_start_xmit(), | |
5e82b4b2 | 3261 | * to give appropriate hint to the CPU. |
53511453 ED |
3262 | */ |
3263 | static inline void netdev_txq_bql_enqueue_prefetchw(struct netdev_queue *dev_queue) | |
3264 | { | |
3265 | #ifdef CONFIG_BQL | |
3266 | prefetchw(&dev_queue->dql.num_queued); | |
3267 | #endif | |
3268 | } | |
3269 | ||
3270 | /** | |
3271 | * netdev_txq_bql_complete_prefetchw - prefetch bql data for write | |
3272 | * @dev_queue: pointer to transmit queue | |
3273 | * | |
3274 | * BQL enabled drivers might use this helper in their TX completion path, | |
5e82b4b2 | 3275 | * to give appropriate hint to the CPU. |
53511453 ED |
3276 | */ |
3277 | static inline void netdev_txq_bql_complete_prefetchw(struct netdev_queue *dev_queue) | |
3278 | { | |
3279 | #ifdef CONFIG_BQL | |
3280 | prefetchw(&dev_queue->dql.limit); | |
3281 | #endif | |
3282 | } | |
3283 | ||
c5d67bd7 TH |
3284 | static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, |
3285 | unsigned int bytes) | |
3286 | { | |
114cf580 TH |
3287 | #ifdef CONFIG_BQL |
3288 | dql_queued(&dev_queue->dql, bytes); | |
b37c0fbe AD |
3289 | |
3290 | if (likely(dql_avail(&dev_queue->dql) >= 0)) | |
3291 | return; | |
3292 | ||
3293 | set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
3294 | ||
3295 | /* | |
3296 | * The XOFF flag must be set before checking the dql_avail below, | |
3297 | * because in netdev_tx_completed_queue we update the dql_completed | |
3298 | * before checking the XOFF flag. | |
3299 | */ | |
3300 | smp_mb(); | |
3301 | ||
3302 | /* check again in case another CPU has just made room avail */ | |
3303 | if (unlikely(dql_avail(&dev_queue->dql) >= 0)) | |
3304 | clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
114cf580 | 3305 | #endif |
c5d67bd7 TH |
3306 | } |
3307 | ||
3e59020a ED |
3308 | /* Variant of netdev_tx_sent_queue() for drivers that are aware |
3309 | * that they should not test BQL status themselves. | |
3310 | * We do want to change __QUEUE_STATE_STACK_XOFF only for the last | |
3311 | * skb of a batch. | |
3312 | * Returns true if the doorbell must be used to kick the NIC. | |
3313 | */ | |
3314 | static inline bool __netdev_tx_sent_queue(struct netdev_queue *dev_queue, | |
3315 | unsigned int bytes, | |
3316 | bool xmit_more) | |
3317 | { | |
3318 | if (xmit_more) { | |
3319 | #ifdef CONFIG_BQL | |
3320 | dql_queued(&dev_queue->dql, bytes); | |
3321 | #endif | |
3322 | return netif_tx_queue_stopped(dev_queue); | |
3323 | } | |
3324 | netdev_tx_sent_queue(dev_queue, bytes); | |
3325 | return true; | |
3326 | } | |
3327 | ||
0042d0c8 FF |
3328 | /** |
3329 | * netdev_sent_queue - report the number of bytes queued to hardware | |
3330 | * @dev: network device | |
3331 | * @bytes: number of bytes queued to the hardware device queue | |
3332 | * | |
3333 | * Report the number of bytes queued for sending/completion to the network | |
3334 | * device hardware queue. @bytes should be a good approximation and should | |
3335 | * exactly match netdev_completed_queue() @bytes | |
3336 | */ | |
c5d67bd7 TH |
3337 | static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes) |
3338 | { | |
3339 | netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes); | |
3340 | } | |
3341 | ||
620344c4 HK |
3342 | static inline bool __netdev_sent_queue(struct net_device *dev, |
3343 | unsigned int bytes, | |
3344 | bool xmit_more) | |
3345 | { | |
3346 | return __netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes, | |
3347 | xmit_more); | |
3348 | } | |
3349 | ||
c5d67bd7 | 3350 | static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue, |
95c96174 | 3351 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 | 3352 | { |
114cf580 | 3353 | #ifdef CONFIG_BQL |
b37c0fbe AD |
3354 | if (unlikely(!bytes)) |
3355 | return; | |
3356 | ||
3357 | dql_completed(&dev_queue->dql, bytes); | |
3358 | ||
3359 | /* | |
3360 | * Without the memory barrier there is a small possiblity that | |
3361 | * netdev_tx_sent_queue will miss the update and cause the queue to | |
3362 | * be stopped forever | |
3363 | */ | |
3364 | smp_mb(); | |
3365 | ||
f3acd33d | 3366 | if (unlikely(dql_avail(&dev_queue->dql) < 0)) |
b37c0fbe AD |
3367 | return; |
3368 | ||
3369 | if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state)) | |
3370 | netif_schedule_queue(dev_queue); | |
114cf580 | 3371 | #endif |
c5d67bd7 TH |
3372 | } |
3373 | ||
0042d0c8 FF |
3374 | /** |
3375 | * netdev_completed_queue - report bytes and packets completed by device | |
3376 | * @dev: network device | |
3377 | * @pkts: actual number of packets sent over the medium | |
3378 | * @bytes: actual number of bytes sent over the medium | |
3379 | * | |
3380 | * Report the number of bytes and packets transmitted by the network device | |
3381 | * hardware queue over the physical medium, @bytes must exactly match the | |
3382 | * @bytes amount passed to netdev_sent_queue() | |
3383 | */ | |
c5d67bd7 | 3384 | static inline void netdev_completed_queue(struct net_device *dev, |
95c96174 | 3385 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 TH |
3386 | { |
3387 | netdev_tx_completed_queue(netdev_get_tx_queue(dev, 0), pkts, bytes); | |
3388 | } | |
3389 | ||
3390 | static inline void netdev_tx_reset_queue(struct netdev_queue *q) | |
3391 | { | |
114cf580 | 3392 | #ifdef CONFIG_BQL |
5c490354 | 3393 | clear_bit(__QUEUE_STATE_STACK_XOFF, &q->state); |
114cf580 TH |
3394 | dql_reset(&q->dql); |
3395 | #endif | |
c5d67bd7 TH |
3396 | } |
3397 | ||
0042d0c8 FF |
3398 | /** |
3399 | * netdev_reset_queue - reset the packets and bytes count of a network device | |
3400 | * @dev_queue: network device | |
3401 | * | |
3402 | * Reset the bytes and packet count of a network device and clear the | |
3403 | * software flow control OFF bit for this network device | |
3404 | */ | |
c5d67bd7 TH |
3405 | static inline void netdev_reset_queue(struct net_device *dev_queue) |
3406 | { | |
3407 | netdev_tx_reset_queue(netdev_get_tx_queue(dev_queue, 0)); | |
c3f26a26 DM |
3408 | } |
3409 | ||
b9507bda DB |
3410 | /** |
3411 | * netdev_cap_txqueue - check if selected tx queue exceeds device queues | |
3412 | * @dev: network device | |
3413 | * @queue_index: given tx queue index | |
3414 | * | |
3415 | * Returns 0 if given tx queue index >= number of device tx queues, | |
3416 | * otherwise returns the originally passed tx queue index. | |
3417 | */ | |
3418 | static inline u16 netdev_cap_txqueue(struct net_device *dev, u16 queue_index) | |
3419 | { | |
3420 | if (unlikely(queue_index >= dev->real_num_tx_queues)) { | |
3421 | net_warn_ratelimited("%s selects TX queue %d, but real number of TX queues is %d\n", | |
3422 | dev->name, queue_index, | |
3423 | dev->real_num_tx_queues); | |
3424 | return 0; | |
3425 | } | |
3426 | ||
3427 | return queue_index; | |
3428 | } | |
3429 | ||
bea3348e SH |
3430 | /** |
3431 | * netif_running - test if up | |
3432 | * @dev: network device | |
3433 | * | |
3434 | * Test if the device has been brought up. | |
3435 | */ | |
4d29515f | 3436 | static inline bool netif_running(const struct net_device *dev) |
1da177e4 LT |
3437 | { |
3438 | return test_bit(__LINK_STATE_START, &dev->state); | |
3439 | } | |
3440 | ||
f25f4e44 | 3441 | /* |
5e82b4b2 | 3442 | * Routines to manage the subqueues on a device. We only need start, |
f25f4e44 PWJ |
3443 | * stop, and a check if it's stopped. All other device management is |
3444 | * done at the overall netdevice level. | |
3445 | * Also test the device if we're multiqueue. | |
3446 | */ | |
bea3348e SH |
3447 | |
3448 | /** | |
3449 | * netif_start_subqueue - allow sending packets on subqueue | |
3450 | * @dev: network device | |
3451 | * @queue_index: sub queue index | |
3452 | * | |
3453 | * Start individual transmit queue of a device with multiple transmit queues. | |
3454 | */ | |
f25f4e44 PWJ |
3455 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
3456 | { | |
fd2ea0a7 | 3457 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3458 | |
3459 | netif_tx_start_queue(txq); | |
f25f4e44 PWJ |
3460 | } |
3461 | ||
bea3348e SH |
3462 | /** |
3463 | * netif_stop_subqueue - stop sending packets on subqueue | |
3464 | * @dev: network device | |
3465 | * @queue_index: sub queue index | |
3466 | * | |
3467 | * Stop individual transmit queue of a device with multiple transmit queues. | |
3468 | */ | |
f25f4e44 PWJ |
3469 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
3470 | { | |
fd2ea0a7 | 3471 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f | 3472 | netif_tx_stop_queue(txq); |
f25f4e44 PWJ |
3473 | } |
3474 | ||
bea3348e | 3475 | /** |
270f3385 | 3476 | * __netif_subqueue_stopped - test status of subqueue |
bea3348e SH |
3477 | * @dev: network device |
3478 | * @queue_index: sub queue index | |
3479 | * | |
3480 | * Check individual transmit queue of a device with multiple transmit queues. | |
3481 | */ | |
4d29515f DM |
3482 | static inline bool __netif_subqueue_stopped(const struct net_device *dev, |
3483 | u16 queue_index) | |
f25f4e44 | 3484 | { |
fd2ea0a7 | 3485 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3486 | |
3487 | return netif_tx_queue_stopped(txq); | |
f25f4e44 PWJ |
3488 | } |
3489 | ||
270f3385 MCC |
3490 | /** |
3491 | * netif_subqueue_stopped - test status of subqueue | |
3492 | * @dev: network device | |
3493 | * @skb: sub queue buffer pointer | |
3494 | * | |
3495 | * Check individual transmit queue of a device with multiple transmit queues. | |
3496 | */ | |
4d29515f DM |
3497 | static inline bool netif_subqueue_stopped(const struct net_device *dev, |
3498 | struct sk_buff *skb) | |
668f895a PE |
3499 | { |
3500 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
3501 | } | |
bea3348e | 3502 | |
738b35cc FF |
3503 | /** |
3504 | * netif_wake_subqueue - allow sending packets on subqueue | |
3505 | * @dev: network device | |
3506 | * @queue_index: sub queue index | |
3507 | * | |
3508 | * Resume individual transmit queue of a device with multiple transmit queues. | |
3509 | */ | |
3510 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) | |
3511 | { | |
3512 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); | |
3513 | ||
3514 | netif_tx_wake_queue(txq); | |
3515 | } | |
f25f4e44 | 3516 | |
537c00de | 3517 | #ifdef CONFIG_XPS |
53af53ae | 3518 | int netif_set_xps_queue(struct net_device *dev, const struct cpumask *mask, |
f629d208 | 3519 | u16 index); |
80d19669 | 3520 | int __netif_set_xps_queue(struct net_device *dev, const unsigned long *mask, |
044ab86d | 3521 | u16 index, enum xps_map_type type); |
80d19669 AN |
3522 | |
3523 | /** | |
3524 | * netif_attr_test_mask - Test a CPU or Rx queue set in a mask | |
3525 | * @j: CPU/Rx queue index | |
3526 | * @mask: bitmask of all cpus/rx queues | |
3527 | * @nr_bits: number of bits in the bitmask | |
3528 | * | |
3529 | * Test if a CPU or Rx queue index is set in a mask of all CPU/Rx queues. | |
3530 | */ | |
3531 | static inline bool netif_attr_test_mask(unsigned long j, | |
3532 | const unsigned long *mask, | |
3533 | unsigned int nr_bits) | |
3534 | { | |
3535 | cpu_max_bits_warn(j, nr_bits); | |
3536 | return test_bit(j, mask); | |
3537 | } | |
3538 | ||
3539 | /** | |
3540 | * netif_attr_test_online - Test for online CPU/Rx queue | |
3541 | * @j: CPU/Rx queue index | |
3542 | * @online_mask: bitmask for CPUs/Rx queues that are online | |
3543 | * @nr_bits: number of bits in the bitmask | |
3544 | * | |
3545 | * Returns true if a CPU/Rx queue is online. | |
3546 | */ | |
3547 | static inline bool netif_attr_test_online(unsigned long j, | |
3548 | const unsigned long *online_mask, | |
3549 | unsigned int nr_bits) | |
3550 | { | |
3551 | cpu_max_bits_warn(j, nr_bits); | |
3552 | ||
3553 | if (online_mask) | |
3554 | return test_bit(j, online_mask); | |
3555 | ||
3556 | return (j < nr_bits); | |
3557 | } | |
3558 | ||
3559 | /** | |
3560 | * netif_attrmask_next - get the next CPU/Rx queue in a cpu/Rx queues mask | |
3561 | * @n: CPU/Rx queue index | |
3562 | * @srcp: the cpumask/Rx queue mask pointer | |
3563 | * @nr_bits: number of bits in the bitmask | |
3564 | * | |
3565 | * Returns >= nr_bits if no further CPUs/Rx queues set. | |
3566 | */ | |
3567 | static inline unsigned int netif_attrmask_next(int n, const unsigned long *srcp, | |
3568 | unsigned int nr_bits) | |
3569 | { | |
3570 | /* -1 is a legal arg here. */ | |
3571 | if (n != -1) | |
3572 | cpu_max_bits_warn(n, nr_bits); | |
3573 | ||
3574 | if (srcp) | |
3575 | return find_next_bit(srcp, nr_bits, n + 1); | |
3576 | ||
3577 | return n + 1; | |
3578 | } | |
3579 | ||
3580 | /** | |
a1fa83bd | 3581 | * netif_attrmask_next_and - get the next CPU/Rx queue in \*src1p & \*src2p |
80d19669 AN |
3582 | * @n: CPU/Rx queue index |
3583 | * @src1p: the first CPUs/Rx queues mask pointer | |
3584 | * @src2p: the second CPUs/Rx queues mask pointer | |
3585 | * @nr_bits: number of bits in the bitmask | |
3586 | * | |
3587 | * Returns >= nr_bits if no further CPUs/Rx queues set in both. | |
3588 | */ | |
3589 | static inline int netif_attrmask_next_and(int n, const unsigned long *src1p, | |
3590 | const unsigned long *src2p, | |
3591 | unsigned int nr_bits) | |
3592 | { | |
3593 | /* -1 is a legal arg here. */ | |
3594 | if (n != -1) | |
3595 | cpu_max_bits_warn(n, nr_bits); | |
3596 | ||
3597 | if (src1p && src2p) | |
3598 | return find_next_and_bit(src1p, src2p, nr_bits, n + 1); | |
3599 | else if (src1p) | |
3600 | return find_next_bit(src1p, nr_bits, n + 1); | |
3601 | else if (src2p) | |
3602 | return find_next_bit(src2p, nr_bits, n + 1); | |
3603 | ||
3604 | return n + 1; | |
3605 | } | |
537c00de AD |
3606 | #else |
3607 | static inline int netif_set_xps_queue(struct net_device *dev, | |
3573540c | 3608 | const struct cpumask *mask, |
537c00de AD |
3609 | u16 index) |
3610 | { | |
3611 | return 0; | |
3612 | } | |
c9fbb2d2 KK |
3613 | |
3614 | static inline int __netif_set_xps_queue(struct net_device *dev, | |
3615 | const unsigned long *mask, | |
044ab86d | 3616 | u16 index, enum xps_map_type type) |
c9fbb2d2 KK |
3617 | { |
3618 | return 0; | |
3619 | } | |
537c00de AD |
3620 | #endif |
3621 | ||
bea3348e SH |
3622 | /** |
3623 | * netif_is_multiqueue - test if device has multiple transmit queues | |
3624 | * @dev: network device | |
3625 | * | |
3626 | * Check if device has multiple transmit queues | |
bea3348e | 3627 | */ |
4d29515f | 3628 | static inline bool netif_is_multiqueue(const struct net_device *dev) |
f25f4e44 | 3629 | { |
a02cec21 | 3630 | return dev->num_tx_queues > 1; |
f25f4e44 | 3631 | } |
1da177e4 | 3632 | |
f629d208 | 3633 | int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq); |
f0796d5c | 3634 | |
a953be53 | 3635 | #ifdef CONFIG_SYSFS |
f629d208 | 3636 | int netif_set_real_num_rx_queues(struct net_device *dev, unsigned int rxq); |
62fe0b40 BH |
3637 | #else |
3638 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, | |
c29c2ebd | 3639 | unsigned int rxqs) |
62fe0b40 | 3640 | { |
c29c2ebd | 3641 | dev->real_num_rx_queues = rxqs; |
62fe0b40 BH |
3642 | return 0; |
3643 | } | |
3644 | #endif | |
271e5b7d JK |
3645 | int netif_set_real_num_queues(struct net_device *dev, |
3646 | unsigned int txq, unsigned int rxq); | |
62fe0b40 | 3647 | |
65073a67 DB |
3648 | static inline struct netdev_rx_queue * |
3649 | __netif_get_rx_queue(struct net_device *dev, unsigned int rxq) | |
3650 | { | |
3651 | return dev->_rx + rxq; | |
3652 | } | |
3653 | ||
a953be53 MD |
3654 | #ifdef CONFIG_SYSFS |
3655 | static inline unsigned int get_netdev_rx_queue_index( | |
3656 | struct netdev_rx_queue *queue) | |
3657 | { | |
3658 | struct net_device *dev = queue->dev; | |
3659 | int index = queue - dev->_rx; | |
3660 | ||
3661 | BUG_ON(index >= dev->num_rx_queues); | |
3662 | return index; | |
3663 | } | |
3664 | #endif | |
3665 | ||
f629d208 | 3666 | int netif_get_num_default_rss_queues(void); |
16917b87 | 3667 | |
e6247027 ED |
3668 | enum skb_free_reason { |
3669 | SKB_REASON_CONSUMED, | |
3670 | SKB_REASON_DROPPED, | |
3671 | }; | |
3672 | ||
3673 | void __dev_kfree_skb_irq(struct sk_buff *skb, enum skb_free_reason reason); | |
3674 | void __dev_kfree_skb_any(struct sk_buff *skb, enum skb_free_reason reason); | |
1da177e4 | 3675 | |
e6247027 ED |
3676 | /* |
3677 | * It is not allowed to call kfree_skb() or consume_skb() from hardware | |
3678 | * interrupt context or with hardware interrupts being disabled. | |
afa79d08 | 3679 | * (in_hardirq() || irqs_disabled()) |
e6247027 ED |
3680 | * |
3681 | * We provide four helpers that can be used in following contexts : | |
3682 | * | |
3683 | * dev_kfree_skb_irq(skb) when caller drops a packet from irq context, | |
3684 | * replacing kfree_skb(skb) | |
3685 | * | |
3686 | * dev_consume_skb_irq(skb) when caller consumes a packet from irq context. | |
3687 | * Typically used in place of consume_skb(skb) in TX completion path | |
3688 | * | |
3689 | * dev_kfree_skb_any(skb) when caller doesn't know its current irq context, | |
3690 | * replacing kfree_skb(skb) | |
3691 | * | |
3692 | * dev_consume_skb_any(skb) when caller doesn't know its current irq context, | |
3693 | * and consumed a packet. Used in place of consume_skb(skb) | |
1da177e4 | 3694 | */ |
e6247027 ED |
3695 | static inline void dev_kfree_skb_irq(struct sk_buff *skb) |
3696 | { | |
3697 | __dev_kfree_skb_irq(skb, SKB_REASON_DROPPED); | |
3698 | } | |
3699 | ||
3700 | static inline void dev_consume_skb_irq(struct sk_buff *skb) | |
3701 | { | |
3702 | __dev_kfree_skb_irq(skb, SKB_REASON_CONSUMED); | |
3703 | } | |
3704 | ||
3705 | static inline void dev_kfree_skb_any(struct sk_buff *skb) | |
3706 | { | |
3707 | __dev_kfree_skb_any(skb, SKB_REASON_DROPPED); | |
3708 | } | |
3709 | ||
3710 | static inline void dev_consume_skb_any(struct sk_buff *skb) | |
3711 | { | |
3712 | __dev_kfree_skb_any(skb, SKB_REASON_CONSUMED); | |
3713 | } | |
1da177e4 | 3714 | |
fe21cb91 KKD |
3715 | u32 bpf_prog_run_generic_xdp(struct sk_buff *skb, struct xdp_buff *xdp, |
3716 | struct bpf_prog *xdp_prog); | |
7c497478 JW |
3717 | void generic_xdp_tx(struct sk_buff *skb, struct bpf_prog *xdp_prog); |
3718 | int do_xdp_generic(struct bpf_prog *xdp_prog, struct sk_buff *skb); | |
f629d208 | 3719 | int netif_rx(struct sk_buff *skb); |
baebdf48 SAS |
3720 | int __netif_rx(struct sk_buff *skb); |
3721 | ||
04eb4489 | 3722 | int netif_receive_skb(struct sk_buff *skb); |
1c601d82 | 3723 | int netif_receive_skb_core(struct sk_buff *skb); |
587652bb | 3724 | void netif_receive_skb_list_internal(struct list_head *head); |
f6ad8c1b | 3725 | void netif_receive_skb_list(struct list_head *head); |
f629d208 JP |
3726 | gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb); |
3727 | void napi_gro_flush(struct napi_struct *napi, bool flush_old); | |
3728 | struct sk_buff *napi_get_frags(struct napi_struct *napi); | |
3729 | gro_result_t napi_gro_frags(struct napi_struct *napi); | |
bf5a755f JC |
3730 | struct packet_offload *gro_find_receive_by_type(__be16 type); |
3731 | struct packet_offload *gro_find_complete_by_type(__be16 type); | |
76620aaf HX |
3732 | |
3733 | static inline void napi_free_frags(struct napi_struct *napi) | |
3734 | { | |
3735 | kfree_skb(napi->skb); | |
3736 | napi->skb = NULL; | |
3737 | } | |
3738 | ||
24b27fc4 | 3739 | bool netdev_is_rx_handler_busy(struct net_device *dev); |
f629d208 JP |
3740 | int netdev_rx_handler_register(struct net_device *dev, |
3741 | rx_handler_func_t *rx_handler, | |
3742 | void *rx_handler_data); | |
3743 | void netdev_rx_handler_unregister(struct net_device *dev); | |
3744 | ||
3745 | bool dev_valid_name(const char *name); | |
d0efb162 PC |
3746 | static inline bool is_socket_ioctl_cmd(unsigned int cmd) |
3747 | { | |
3748 | return _IOC_TYPE(cmd) == SOCK_IOC_TYPE; | |
3749 | } | |
29c49648 AB |
3750 | int get_user_ifreq(struct ifreq *ifr, void __user **ifrdata, void __user *arg); |
3751 | int put_user_ifreq(struct ifreq *ifr, void __user *arg); | |
44c02a2c | 3752 | int dev_ioctl(struct net *net, unsigned int cmd, struct ifreq *ifr, |
a554bf96 | 3753 | void __user *data, bool *need_copyout); |
876f0bf9 | 3754 | int dev_ifconf(struct net *net, struct ifconf __user *ifc); |
a554bf96 | 3755 | int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *userdata); |
f629d208 | 3756 | unsigned int dev_get_flags(const struct net_device *); |
6d040321 PM |
3757 | int __dev_change_flags(struct net_device *dev, unsigned int flags, |
3758 | struct netlink_ext_ack *extack); | |
567c5e13 PM |
3759 | int dev_change_flags(struct net_device *dev, unsigned int flags, |
3760 | struct netlink_ext_ack *extack); | |
cb178190 DM |
3761 | void __dev_notify_flags(struct net_device *, unsigned int old_flags, |
3762 | unsigned int gchanges); | |
f629d208 | 3763 | int dev_set_alias(struct net_device *, const char *, size_t); |
6c557001 | 3764 | int dev_get_alias(const struct net_device *, char *, size_t); |
0854fa82 AV |
3765 | int __dev_change_net_namespace(struct net_device *dev, struct net *net, |
3766 | const char *pat, int new_ifindex); | |
3767 | static inline | |
eeb85a14 | 3768 | int dev_change_net_namespace(struct net_device *dev, struct net *net, |
0854fa82 AV |
3769 | const char *pat) |
3770 | { | |
3771 | return __dev_change_net_namespace(dev, net, pat, 0); | |
3772 | } | |
f51048c3 | 3773 | int __dev_set_mtu(struct net_device *, int); |
f629d208 | 3774 | int dev_set_mtu(struct net_device *, int); |
d59cdf94 PM |
3775 | int dev_pre_changeaddr_notify(struct net_device *dev, const char *addr, |
3776 | struct netlink_ext_ack *extack); | |
3a37a963 PM |
3777 | int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa, |
3778 | struct netlink_ext_ack *extack); | |
3b23a32a CW |
3779 | int dev_set_mac_address_user(struct net_device *dev, struct sockaddr *sa, |
3780 | struct netlink_ext_ack *extack); | |
3781 | int dev_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name); | |
d6abc596 FF |
3782 | int dev_get_port_parent_id(struct net_device *dev, |
3783 | struct netdev_phys_item_id *ppid, bool recurse); | |
3784 | bool netdev_port_same_parent_id(struct net_device *a, struct net_device *b); | |
f53c7239 | 3785 | struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev, bool *again); |
ce93718f DM |
3786 | struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, |
3787 | struct netdev_queue *txq, int *ret); | |
d67b9cd2 | 3788 | |
aa8d3a71 | 3789 | int bpf_xdp_link_attach(const union bpf_attr *attr, struct bpf_prog *prog); |
879af96f | 3790 | u8 dev_xdp_prog_count(struct net_device *dev); |
7f0a8382 | 3791 | u32 dev_xdp_prog_id(struct net_device *dev, enum bpf_xdp_mode mode); |
aa8d3a71 | 3792 | |
a0265d28 | 3793 | int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
f629d208 | 3794 | int dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
5f7d5728 | 3795 | int dev_forward_skb_nomtu(struct net_device *dev, struct sk_buff *skb); |
f4b05d27 NA |
3796 | bool is_skb_forwardable(const struct net_device *dev, |
3797 | const struct sk_buff *skb); | |
1da177e4 | 3798 | |
5f7d5728 JDB |
3799 | static __always_inline bool __is_skb_forwardable(const struct net_device *dev, |
3800 | const struct sk_buff *skb, | |
3801 | const bool check_mtu) | |
3802 | { | |
3803 | const u32 vlan_hdr_len = 4; /* VLAN_HLEN */ | |
3804 | unsigned int len; | |
3805 | ||
3806 | if (!(dev->flags & IFF_UP)) | |
3807 | return false; | |
3808 | ||
3809 | if (!check_mtu) | |
3810 | return true; | |
3811 | ||
3812 | len = dev->mtu + dev->hard_header_len + vlan_hdr_len; | |
3813 | if (skb->len <= len) | |
3814 | return true; | |
3815 | ||
3816 | /* if TSO is enabled, we don't care about the length as the packet | |
3817 | * could be forwarded without being segmented before | |
3818 | */ | |
3819 | if (skb_is_gso(skb)) | |
3820 | return true; | |
3821 | ||
3822 | return false; | |
3823 | } | |
3824 | ||
625788b5 ED |
3825 | struct net_device_core_stats *netdev_core_stats_alloc(struct net_device *dev); |
3826 | ||
3827 | static inline struct net_device_core_stats *dev_core_stats(struct net_device *dev) | |
3828 | { | |
3829 | /* This READ_ONCE() pairs with the write in netdev_core_stats_alloc() */ | |
3830 | struct net_device_core_stats __percpu *p = READ_ONCE(dev->core_stats); | |
3831 | ||
3832 | if (likely(p)) | |
3833 | return this_cpu_ptr(p); | |
3834 | ||
3835 | return netdev_core_stats_alloc(dev); | |
3836 | } | |
3837 | ||
3838 | #define DEV_CORE_STATS_INC(FIELD) \ | |
3839 | static inline void dev_core_stats_##FIELD##_inc(struct net_device *dev) \ | |
3840 | { \ | |
fc93db15 ED |
3841 | struct net_device_core_stats *p; \ |
3842 | \ | |
3843 | preempt_disable(); \ | |
3844 | p = dev_core_stats(dev); \ | |
625788b5 ED |
3845 | \ |
3846 | if (p) \ | |
3847 | local_inc(&p->FIELD); \ | |
fc93db15 | 3848 | preempt_enable(); \ |
625788b5 ED |
3849 | } |
3850 | DEV_CORE_STATS_INC(rx_dropped) | |
3851 | DEV_CORE_STATS_INC(tx_dropped) | |
3852 | DEV_CORE_STATS_INC(rx_nohandler) | |
794c24e9 | 3853 | DEV_CORE_STATS_INC(rx_otherhost_dropped) |
625788b5 | 3854 | |
4e3264d2 | 3855 | static __always_inline int ____dev_forward_skb(struct net_device *dev, |
5f7d5728 JDB |
3856 | struct sk_buff *skb, |
3857 | const bool check_mtu) | |
4e3264d2 MKL |
3858 | { |
3859 | if (skb_orphan_frags(skb, GFP_ATOMIC) || | |
5f7d5728 | 3860 | unlikely(!__is_skb_forwardable(dev, skb, check_mtu))) { |
625788b5 | 3861 | dev_core_stats_rx_dropped_inc(dev); |
4e3264d2 MKL |
3862 | kfree_skb(skb); |
3863 | return NET_RX_DROP; | |
3864 | } | |
3865 | ||
ff70202b | 3866 | skb_scrub_packet(skb, !net_eq(dev_net(dev), dev_net(skb->dev))); |
4e3264d2 MKL |
3867 | skb->priority = 0; |
3868 | return 0; | |
3869 | } | |
3870 | ||
9f9a742d | 3871 | bool dev_nit_active(struct net_device *dev); |
74b20582 DA |
3872 | void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev); |
3873 | ||
4c6c11ea | 3874 | static inline void __dev_put(struct net_device *dev) |
1da177e4 | 3875 | { |
b37a4668 | 3876 | if (dev) { |
919067cc | 3877 | #ifdef CONFIG_PCPU_DEV_REFCNT |
b37a4668 | 3878 | this_cpu_dec(*dev->pcpu_refcnt); |
919067cc | 3879 | #else |
b37a4668 | 3880 | refcount_dec(&dev->dev_refcnt); |
919067cc | 3881 | #endif |
b37a4668 | 3882 | } |
1da177e4 LT |
3883 | } |
3884 | ||
4c6c11ea | 3885 | static inline void __dev_hold(struct net_device *dev) |
15333061 | 3886 | { |
b37a4668 | 3887 | if (dev) { |
919067cc | 3888 | #ifdef CONFIG_PCPU_DEV_REFCNT |
b37a4668 | 3889 | this_cpu_inc(*dev->pcpu_refcnt); |
919067cc | 3890 | #else |
b37a4668 | 3891 | refcount_inc(&dev->dev_refcnt); |
919067cc | 3892 | #endif |
b37a4668 | 3893 | } |
15333061 | 3894 | } |
1da177e4 | 3895 | |
4c6c11ea ED |
3896 | static inline void __netdev_tracker_alloc(struct net_device *dev, |
3897 | netdevice_tracker *tracker, | |
3898 | gfp_t gfp) | |
3899 | { | |
3900 | #ifdef CONFIG_NET_DEV_REFCNT_TRACKER | |
3901 | ref_tracker_alloc(&dev->refcnt_tracker, tracker, gfp); | |
3902 | #endif | |
3903 | } | |
3904 | ||
3905 | /* netdev_tracker_alloc() can upgrade a prior untracked reference | |
3906 | * taken by dev_get_by_name()/dev_get_by_index() to a tracked one. | |
3907 | */ | |
4d92b95f ED |
3908 | static inline void netdev_tracker_alloc(struct net_device *dev, |
3909 | netdevice_tracker *tracker, gfp_t gfp) | |
3910 | { | |
3911 | #ifdef CONFIG_NET_DEV_REFCNT_TRACKER | |
4c6c11ea ED |
3912 | refcount_dec(&dev->refcnt_tracker.no_tracker); |
3913 | __netdev_tracker_alloc(dev, tracker, gfp); | |
4d92b95f ED |
3914 | #endif |
3915 | } | |
3916 | ||
3917 | static inline void netdev_tracker_free(struct net_device *dev, | |
3918 | netdevice_tracker *tracker) | |
3919 | { | |
3920 | #ifdef CONFIG_NET_DEV_REFCNT_TRACKER | |
3921 | ref_tracker_free(&dev->refcnt_tracker, tracker); | |
3922 | #endif | |
3923 | } | |
3924 | ||
3925 | static inline void dev_hold_track(struct net_device *dev, | |
3926 | netdevice_tracker *tracker, gfp_t gfp) | |
3927 | { | |
3928 | if (dev) { | |
4c6c11ea ED |
3929 | __dev_hold(dev); |
3930 | __netdev_tracker_alloc(dev, tracker, gfp); | |
4d92b95f ED |
3931 | } |
3932 | } | |
3933 | ||
3934 | static inline void dev_put_track(struct net_device *dev, | |
3935 | netdevice_tracker *tracker) | |
3936 | { | |
3937 | if (dev) { | |
3938 | netdev_tracker_free(dev, tracker); | |
4c6c11ea | 3939 | __dev_put(dev); |
4d92b95f ED |
3940 | } |
3941 | } | |
3942 | ||
4c6c11ea ED |
3943 | /** |
3944 | * dev_hold - get reference to device | |
3945 | * @dev: network device | |
3946 | * | |
3947 | * Hold reference to device to keep it from being freed. | |
3948 | * Try using dev_hold_track() instead. | |
3949 | */ | |
3950 | static inline void dev_hold(struct net_device *dev) | |
3951 | { | |
3952 | dev_hold_track(dev, NULL, GFP_ATOMIC); | |
3953 | } | |
3954 | ||
3955 | /** | |
3956 | * dev_put - release reference to device | |
3957 | * @dev: network device | |
3958 | * | |
3959 | * Release reference to device to allow it to be freed. | |
3960 | * Try using dev_put_track() instead. | |
3961 | */ | |
3962 | static inline void dev_put(struct net_device *dev) | |
3963 | { | |
3964 | dev_put_track(dev, NULL); | |
3965 | } | |
3966 | ||
9038c320 ED |
3967 | static inline void dev_replace_track(struct net_device *odev, |
3968 | struct net_device *ndev, | |
3969 | netdevice_tracker *tracker, | |
3970 | gfp_t gfp) | |
3971 | { | |
9038c320 | 3972 | if (odev) |
9280ac2e ED |
3973 | netdev_tracker_free(odev, tracker); |
3974 | ||
4c6c11ea ED |
3975 | __dev_hold(ndev); |
3976 | __dev_put(odev); | |
9280ac2e | 3977 | |
9038c320 | 3978 | if (ndev) |
4c6c11ea | 3979 | __netdev_tracker_alloc(ndev, tracker, gfp); |
9038c320 ED |
3980 | } |
3981 | ||
1da177e4 LT |
3982 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on |
3983 | * and _off may be called from IRQ context, but it is caller | |
3984 | * who is responsible for serialization of these calls. | |
b00055aa SR |
3985 | * |
3986 | * The name carrier is inappropriate, these functions should really be | |
3987 | * called netif_lowerlayer_*() because they represent the state of any | |
3988 | * kind of lower layer not just hardware media. | |
1da177e4 | 3989 | */ |
f629d208 | 3990 | void linkwatch_fire_event(struct net_device *dev); |
1da177e4 | 3991 | |
bea3348e SH |
3992 | /** |
3993 | * netif_carrier_ok - test if carrier present | |
3994 | * @dev: network device | |
3995 | * | |
3996 | * Check if carrier is present on device | |
3997 | */ | |
4d29515f | 3998 | static inline bool netif_carrier_ok(const struct net_device *dev) |
1da177e4 LT |
3999 | { |
4000 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
4001 | } | |
4002 | ||
f629d208 | 4003 | unsigned long dev_trans_start(struct net_device *dev); |
9d21493b | 4004 | |
f629d208 | 4005 | void __netdev_watchdog_up(struct net_device *dev); |
1da177e4 | 4006 | |
f629d208 | 4007 | void netif_carrier_on(struct net_device *dev); |
f629d208 | 4008 | void netif_carrier_off(struct net_device *dev); |
490dceca | 4009 | void netif_carrier_event(struct net_device *dev); |
1da177e4 | 4010 | |
bea3348e SH |
4011 | /** |
4012 | * netif_dormant_on - mark device as dormant. | |
4013 | * @dev: network device | |
4014 | * | |
4015 | * Mark device as dormant (as per RFC2863). | |
4016 | * | |
4017 | * The dormant state indicates that the relevant interface is not | |
4018 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
4019 | * in a "pending" state, waiting for some external event. For "on- | |
4020 | * demand" interfaces, this new state identifies the situation where the | |
4021 | * interface is waiting for events to place it in the up state. | |
bea3348e | 4022 | */ |
b00055aa SR |
4023 | static inline void netif_dormant_on(struct net_device *dev) |
4024 | { | |
4025 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
4026 | linkwatch_fire_event(dev); | |
4027 | } | |
4028 | ||
bea3348e SH |
4029 | /** |
4030 | * netif_dormant_off - set device as not dormant. | |
4031 | * @dev: network device | |
4032 | * | |
4033 | * Device is not in dormant state. | |
4034 | */ | |
b00055aa SR |
4035 | static inline void netif_dormant_off(struct net_device *dev) |
4036 | { | |
4037 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
4038 | linkwatch_fire_event(dev); | |
4039 | } | |
4040 | ||
bea3348e | 4041 | /** |
8ecbc40a | 4042 | * netif_dormant - test if device is dormant |
bea3348e SH |
4043 | * @dev: network device |
4044 | * | |
8ecbc40a | 4045 | * Check if device is dormant. |
bea3348e | 4046 | */ |
4d29515f | 4047 | static inline bool netif_dormant(const struct net_device *dev) |
b00055aa SR |
4048 | { |
4049 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
4050 | } | |
4051 | ||
4052 | ||
eec517cd AL |
4053 | /** |
4054 | * netif_testing_on - mark device as under test. | |
4055 | * @dev: network device | |
4056 | * | |
4057 | * Mark device as under test (as per RFC2863). | |
4058 | * | |
4059 | * The testing state indicates that some test(s) must be performed on | |
4060 | * the interface. After completion, of the test, the interface state | |
4061 | * will change to up, dormant, or down, as appropriate. | |
4062 | */ | |
4063 | static inline void netif_testing_on(struct net_device *dev) | |
4064 | { | |
4065 | if (!test_and_set_bit(__LINK_STATE_TESTING, &dev->state)) | |
4066 | linkwatch_fire_event(dev); | |
4067 | } | |
4068 | ||
4069 | /** | |
4070 | * netif_testing_off - set device as not under test. | |
4071 | * @dev: network device | |
4072 | * | |
4073 | * Device is not in testing state. | |
4074 | */ | |
4075 | static inline void netif_testing_off(struct net_device *dev) | |
4076 | { | |
4077 | if (test_and_clear_bit(__LINK_STATE_TESTING, &dev->state)) | |
4078 | linkwatch_fire_event(dev); | |
4079 | } | |
4080 | ||
4081 | /** | |
4082 | * netif_testing - test if device is under test | |
4083 | * @dev: network device | |
4084 | * | |
4085 | * Check if device is under test | |
4086 | */ | |
4087 | static inline bool netif_testing(const struct net_device *dev) | |
4088 | { | |
4089 | return test_bit(__LINK_STATE_TESTING, &dev->state); | |
4090 | } | |
4091 | ||
4092 | ||
bea3348e SH |
4093 | /** |
4094 | * netif_oper_up - test if device is operational | |
4095 | * @dev: network device | |
4096 | * | |
4097 | * Check if carrier is operational | |
4098 | */ | |
4d29515f | 4099 | static inline bool netif_oper_up(const struct net_device *dev) |
d94d9fee | 4100 | { |
b00055aa SR |
4101 | return (dev->operstate == IF_OPER_UP || |
4102 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
4103 | } | |
4104 | ||
bea3348e SH |
4105 | /** |
4106 | * netif_device_present - is device available or removed | |
4107 | * @dev: network device | |
4108 | * | |
4109 | * Check if device has not been removed from system. | |
4110 | */ | |
7a126a43 | 4111 | static inline bool netif_device_present(const struct net_device *dev) |
1da177e4 LT |
4112 | { |
4113 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
4114 | } | |
4115 | ||
f629d208 | 4116 | void netif_device_detach(struct net_device *dev); |
1da177e4 | 4117 | |
f629d208 | 4118 | void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
4119 | |
4120 | /* | |
4121 | * Network interface message level settings | |
4122 | */ | |
1da177e4 LT |
4123 | |
4124 | enum { | |
6a94b8cc MK |
4125 | NETIF_MSG_DRV_BIT, |
4126 | NETIF_MSG_PROBE_BIT, | |
4127 | NETIF_MSG_LINK_BIT, | |
4128 | NETIF_MSG_TIMER_BIT, | |
4129 | NETIF_MSG_IFDOWN_BIT, | |
4130 | NETIF_MSG_IFUP_BIT, | |
4131 | NETIF_MSG_RX_ERR_BIT, | |
4132 | NETIF_MSG_TX_ERR_BIT, | |
4133 | NETIF_MSG_TX_QUEUED_BIT, | |
4134 | NETIF_MSG_INTR_BIT, | |
4135 | NETIF_MSG_TX_DONE_BIT, | |
4136 | NETIF_MSG_RX_STATUS_BIT, | |
4137 | NETIF_MSG_PKTDATA_BIT, | |
4138 | NETIF_MSG_HW_BIT, | |
4139 | NETIF_MSG_WOL_BIT, | |
4140 | ||
4141 | /* When you add a new bit above, update netif_msg_class_names array | |
4142 | * in net/ethtool/common.c | |
4143 | */ | |
4144 | NETIF_MSG_CLASS_COUNT, | |
1da177e4 | 4145 | }; |
6a94b8cc MK |
4146 | /* Both ethtool_ops interface and internal driver implementation use u32 */ |
4147 | static_assert(NETIF_MSG_CLASS_COUNT <= 32); | |
4148 | ||
4149 | #define __NETIF_MSG_BIT(bit) ((u32)1 << (bit)) | |
4150 | #define __NETIF_MSG(name) __NETIF_MSG_BIT(NETIF_MSG_ ## name ## _BIT) | |
4151 | ||
4152 | #define NETIF_MSG_DRV __NETIF_MSG(DRV) | |
4153 | #define NETIF_MSG_PROBE __NETIF_MSG(PROBE) | |
4154 | #define NETIF_MSG_LINK __NETIF_MSG(LINK) | |
4155 | #define NETIF_MSG_TIMER __NETIF_MSG(TIMER) | |
4156 | #define NETIF_MSG_IFDOWN __NETIF_MSG(IFDOWN) | |
4157 | #define NETIF_MSG_IFUP __NETIF_MSG(IFUP) | |
4158 | #define NETIF_MSG_RX_ERR __NETIF_MSG(RX_ERR) | |
4159 | #define NETIF_MSG_TX_ERR __NETIF_MSG(TX_ERR) | |
4160 | #define NETIF_MSG_TX_QUEUED __NETIF_MSG(TX_QUEUED) | |
4161 | #define NETIF_MSG_INTR __NETIF_MSG(INTR) | |
4162 | #define NETIF_MSG_TX_DONE __NETIF_MSG(TX_DONE) | |
4163 | #define NETIF_MSG_RX_STATUS __NETIF_MSG(RX_STATUS) | |
4164 | #define NETIF_MSG_PKTDATA __NETIF_MSG(PKTDATA) | |
4165 | #define NETIF_MSG_HW __NETIF_MSG(HW) | |
4166 | #define NETIF_MSG_WOL __NETIF_MSG(WOL) | |
1da177e4 LT |
4167 | |
4168 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
4169 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
4170 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
4171 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
4172 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
4173 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
4174 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
4175 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
4176 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
4177 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
4178 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
4179 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
4180 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
4181 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
4182 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
4183 | ||
4184 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
4185 | { | |
4186 | /* use default */ | |
4187 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
4188 | return default_msg_enable_bits; | |
4189 | if (debug_value == 0) /* no output */ | |
4190 | return 0; | |
4191 | /* set low N bits */ | |
f4d7b3e2 | 4192 | return (1U << debug_value) - 1; |
1da177e4 LT |
4193 | } |
4194 | ||
c773e847 | 4195 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 4196 | { |
c773e847 | 4197 | spin_lock(&txq->_xmit_lock); |
7a10d8c8 ED |
4198 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ |
4199 | WRITE_ONCE(txq->xmit_lock_owner, cpu); | |
22dd7495 JHS |
4200 | } |
4201 | ||
5a717f4f MT |
4202 | static inline bool __netif_tx_acquire(struct netdev_queue *txq) |
4203 | { | |
4204 | __acquire(&txq->_xmit_lock); | |
4205 | return true; | |
4206 | } | |
4207 | ||
4208 | static inline void __netif_tx_release(struct netdev_queue *txq) | |
4209 | { | |
4210 | __release(&txq->_xmit_lock); | |
4211 | } | |
4212 | ||
fd2ea0a7 DM |
4213 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
4214 | { | |
4215 | spin_lock_bh(&txq->_xmit_lock); | |
7a10d8c8 ED |
4216 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ |
4217 | WRITE_ONCE(txq->xmit_lock_owner, smp_processor_id()); | |
fd2ea0a7 DM |
4218 | } |
4219 | ||
4d29515f | 4220 | static inline bool __netif_tx_trylock(struct netdev_queue *txq) |
c3f26a26 | 4221 | { |
4d29515f | 4222 | bool ok = spin_trylock(&txq->_xmit_lock); |
7a10d8c8 ED |
4223 | |
4224 | if (likely(ok)) { | |
4225 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ | |
4226 | WRITE_ONCE(txq->xmit_lock_owner, smp_processor_id()); | |
4227 | } | |
c3f26a26 DM |
4228 | return ok; |
4229 | } | |
4230 | ||
4231 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
4232 | { | |
7a10d8c8 ED |
4233 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ |
4234 | WRITE_ONCE(txq->xmit_lock_owner, -1); | |
c3f26a26 DM |
4235 | spin_unlock(&txq->_xmit_lock); |
4236 | } | |
4237 | ||
4238 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
4239 | { | |
7a10d8c8 ED |
4240 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ |
4241 | WRITE_ONCE(txq->xmit_lock_owner, -1); | |
c3f26a26 DM |
4242 | spin_unlock_bh(&txq->_xmit_lock); |
4243 | } | |
4244 | ||
5337824f ED |
4245 | /* |
4246 | * txq->trans_start can be read locklessly from dev_watchdog() | |
4247 | */ | |
08baf561 ED |
4248 | static inline void txq_trans_update(struct netdev_queue *txq) |
4249 | { | |
4250 | if (txq->xmit_lock_owner != -1) | |
5337824f ED |
4251 | WRITE_ONCE(txq->trans_start, jiffies); |
4252 | } | |
4253 | ||
4254 | static inline void txq_trans_cond_update(struct netdev_queue *txq) | |
4255 | { | |
4256 | unsigned long now = jiffies; | |
4257 | ||
4258 | if (READ_ONCE(txq->trans_start) != now) | |
4259 | WRITE_ONCE(txq->trans_start, now); | |
08baf561 ED |
4260 | } |
4261 | ||
ba162f8e FW |
4262 | /* legacy drivers only, netdev_start_xmit() sets txq->trans_start */ |
4263 | static inline void netif_trans_update(struct net_device *dev) | |
4264 | { | |
9b36627a FW |
4265 | struct netdev_queue *txq = netdev_get_tx_queue(dev, 0); |
4266 | ||
5337824f | 4267 | txq_trans_cond_update(txq); |
ba162f8e FW |
4268 | } |
4269 | ||
d29f749e DJ |
4270 | /** |
4271 | * netif_tx_lock - grab network device transmit lock | |
4272 | * @dev: network device | |
d29f749e DJ |
4273 | * |
4274 | * Get network device transmit lock | |
4275 | */ | |
dab8fe32 | 4276 | void netif_tx_lock(struct net_device *dev); |
932ff279 HX |
4277 | |
4278 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
4279 | { | |
e8a0464c DM |
4280 | local_bh_disable(); |
4281 | netif_tx_lock(dev); | |
932ff279 HX |
4282 | } |
4283 | ||
dab8fe32 | 4284 | void netif_tx_unlock(struct net_device *dev); |
932ff279 HX |
4285 | |
4286 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
4287 | { | |
e8a0464c DM |
4288 | netif_tx_unlock(dev); |
4289 | local_bh_enable(); | |
932ff279 HX |
4290 | } |
4291 | ||
c773e847 | 4292 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 4293 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 4294 | __netif_tx_lock(txq, cpu); \ |
5a717f4f MT |
4295 | } else { \ |
4296 | __netif_tx_acquire(txq); \ | |
22dd7495 JHS |
4297 | } \ |
4298 | } | |
4299 | ||
5efeac44 EB |
4300 | #define HARD_TX_TRYLOCK(dev, txq) \ |
4301 | (((dev->features & NETIF_F_LLTX) == 0) ? \ | |
4302 | __netif_tx_trylock(txq) : \ | |
5a717f4f | 4303 | __netif_tx_acquire(txq)) |
5efeac44 | 4304 | |
c773e847 | 4305 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 4306 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 4307 | __netif_tx_unlock(txq); \ |
5a717f4f MT |
4308 | } else { \ |
4309 | __netif_tx_release(txq); \ | |
22dd7495 JHS |
4310 | } \ |
4311 | } | |
4312 | ||
1da177e4 LT |
4313 | static inline void netif_tx_disable(struct net_device *dev) |
4314 | { | |
fd2ea0a7 | 4315 | unsigned int i; |
c3f26a26 | 4316 | int cpu; |
fd2ea0a7 | 4317 | |
c3f26a26 DM |
4318 | local_bh_disable(); |
4319 | cpu = smp_processor_id(); | |
3aa6bce9 | 4320 | spin_lock(&dev->tx_global_lock); |
fd2ea0a7 DM |
4321 | for (i = 0; i < dev->num_tx_queues; i++) { |
4322 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
4323 | |
4324 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 4325 | netif_tx_stop_queue(txq); |
c3f26a26 | 4326 | __netif_tx_unlock(txq); |
fd2ea0a7 | 4327 | } |
3aa6bce9 | 4328 | spin_unlock(&dev->tx_global_lock); |
c3f26a26 | 4329 | local_bh_enable(); |
1da177e4 LT |
4330 | } |
4331 | ||
e308a5d8 DM |
4332 | static inline void netif_addr_lock(struct net_device *dev) |
4333 | { | |
1fc70edb | 4334 | unsigned char nest_level = 0; |
e308a5d8 | 4335 | |
1fc70edb TY |
4336 | #ifdef CONFIG_LOCKDEP |
4337 | nest_level = dev->nested_level; | |
4338 | #endif | |
4339 | spin_lock_nested(&dev->addr_list_lock, nest_level); | |
845e0ebb CW |
4340 | } |
4341 | ||
e308a5d8 DM |
4342 | static inline void netif_addr_lock_bh(struct net_device *dev) |
4343 | { | |
1fc70edb TY |
4344 | unsigned char nest_level = 0; |
4345 | ||
4346 | #ifdef CONFIG_LOCKDEP | |
4347 | nest_level = dev->nested_level; | |
4348 | #endif | |
4349 | local_bh_disable(); | |
4350 | spin_lock_nested(&dev->addr_list_lock, nest_level); | |
e308a5d8 DM |
4351 | } |
4352 | ||
4353 | static inline void netif_addr_unlock(struct net_device *dev) | |
4354 | { | |
4355 | spin_unlock(&dev->addr_list_lock); | |
4356 | } | |
4357 | ||
4358 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
4359 | { | |
4360 | spin_unlock_bh(&dev->addr_list_lock); | |
4361 | } | |
4362 | ||
f001fde5 | 4363 | /* |
31278e71 | 4364 | * dev_addrs walker. Should be used only for read access. Call with |
f001fde5 JP |
4365 | * rcu_read_lock held. |
4366 | */ | |
4367 | #define for_each_dev_addr(dev, ha) \ | |
31278e71 | 4368 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
f001fde5 | 4369 | |
1da177e4 LT |
4370 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
4371 | ||
f629d208 | 4372 | void ether_setup(struct net_device *dev); |
1da177e4 LT |
4373 | |
4374 | /* Support for loadable net-drivers */ | |
f629d208 | 4375 | struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, |
c835a677 | 4376 | unsigned char name_assign_type, |
f629d208 JP |
4377 | void (*setup)(struct net_device *), |
4378 | unsigned int txqs, unsigned int rxqs); | |
c835a677 TG |
4379 | #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \ |
4380 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, 1, 1) | |
36909ea4 | 4381 | |
c835a677 TG |
4382 | #define alloc_netdev_mq(sizeof_priv, name, name_assign_type, setup, count) \ |
4383 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, count, \ | |
4384 | count) | |
36909ea4 | 4385 | |
f629d208 JP |
4386 | int register_netdev(struct net_device *dev); |
4387 | void unregister_netdev(struct net_device *dev); | |
f001fde5 | 4388 | |
cd16627f BG |
4389 | int devm_register_netdev(struct device *dev, struct net_device *ndev); |
4390 | ||
22bedad3 | 4391 | /* General hardware address lists handling functions */ |
f629d208 JP |
4392 | int __hw_addr_sync(struct netdev_hw_addr_list *to_list, |
4393 | struct netdev_hw_addr_list *from_list, int addr_len); | |
4394 | void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, | |
4395 | struct netdev_hw_addr_list *from_list, int addr_len); | |
670e5b8e AD |
4396 | int __hw_addr_sync_dev(struct netdev_hw_addr_list *list, |
4397 | struct net_device *dev, | |
4398 | int (*sync)(struct net_device *, const unsigned char *), | |
4399 | int (*unsync)(struct net_device *, | |
4400 | const unsigned char *)); | |
e7946760 IK |
4401 | int __hw_addr_ref_sync_dev(struct netdev_hw_addr_list *list, |
4402 | struct net_device *dev, | |
4403 | int (*sync)(struct net_device *, | |
4404 | const unsigned char *, int), | |
4405 | int (*unsync)(struct net_device *, | |
4406 | const unsigned char *, int)); | |
4407 | void __hw_addr_ref_unsync_dev(struct netdev_hw_addr_list *list, | |
4408 | struct net_device *dev, | |
4409 | int (*unsync)(struct net_device *, | |
4410 | const unsigned char *, int)); | |
670e5b8e AD |
4411 | void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list, |
4412 | struct net_device *dev, | |
4413 | int (*unsync)(struct net_device *, | |
4414 | const unsigned char *)); | |
f629d208 | 4415 | void __hw_addr_init(struct netdev_hw_addr_list *list); |
22bedad3 | 4416 | |
f001fde5 | 4417 | /* Functions used for device addresses handling */ |
adeef3e3 JK |
4418 | void dev_addr_mod(struct net_device *dev, unsigned int offset, |
4419 | const void *addr, size_t len); | |
4420 | ||
48eab831 | 4421 | static inline void |
40af35fd | 4422 | __dev_addr_set(struct net_device *dev, const void *addr, size_t len) |
48eab831 | 4423 | { |
adeef3e3 | 4424 | dev_addr_mod(dev, 0, addr, len); |
48eab831 JK |
4425 | } |
4426 | ||
4427 | static inline void dev_addr_set(struct net_device *dev, const u8 *addr) | |
4428 | { | |
4429 | __dev_addr_set(dev, addr, dev->addr_len); | |
4430 | } | |
4431 | ||
f629d208 JP |
4432 | int dev_addr_add(struct net_device *dev, const unsigned char *addr, |
4433 | unsigned char addr_type); | |
4434 | int dev_addr_del(struct net_device *dev, const unsigned char *addr, | |
4435 | unsigned char addr_type); | |
a748ee24 JP |
4436 | |
4437 | /* Functions used for unicast addresses handling */ | |
f629d208 JP |
4438 | int dev_uc_add(struct net_device *dev, const unsigned char *addr); |
4439 | int dev_uc_add_excl(struct net_device *dev, const unsigned char *addr); | |
4440 | int dev_uc_del(struct net_device *dev, const unsigned char *addr); | |
4441 | int dev_uc_sync(struct net_device *to, struct net_device *from); | |
4442 | int dev_uc_sync_multiple(struct net_device *to, struct net_device *from); | |
4443 | void dev_uc_unsync(struct net_device *to, struct net_device *from); | |
4444 | void dev_uc_flush(struct net_device *dev); | |
4445 | void dev_uc_init(struct net_device *dev); | |
f001fde5 | 4446 | |
670e5b8e AD |
4447 | /** |
4448 | * __dev_uc_sync - Synchonize device's unicast list | |
4449 | * @dev: device to sync | |
4450 | * @sync: function to call if address should be added | |
4451 | * @unsync: function to call if address should be removed | |
4452 | * | |
4453 | * Add newly added addresses to the interface, and release | |
4454 | * addresses that have been deleted. | |
5e82b4b2 | 4455 | */ |
670e5b8e AD |
4456 | static inline int __dev_uc_sync(struct net_device *dev, |
4457 | int (*sync)(struct net_device *, | |
4458 | const unsigned char *), | |
4459 | int (*unsync)(struct net_device *, | |
4460 | const unsigned char *)) | |
4461 | { | |
4462 | return __hw_addr_sync_dev(&dev->uc, dev, sync, unsync); | |
4463 | } | |
4464 | ||
4465 | /** | |
e793c0f7 | 4466 | * __dev_uc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
4467 | * @dev: device to sync |
4468 | * @unsync: function to call if address should be removed | |
4469 | * | |
4470 | * Remove all addresses that were added to the device by dev_uc_sync(). | |
5e82b4b2 | 4471 | */ |
670e5b8e AD |
4472 | static inline void __dev_uc_unsync(struct net_device *dev, |
4473 | int (*unsync)(struct net_device *, | |
4474 | const unsigned char *)) | |
4475 | { | |
4476 | __hw_addr_unsync_dev(&dev->uc, dev, unsync); | |
4477 | } | |
4478 | ||
22bedad3 | 4479 | /* Functions used for multicast addresses handling */ |
f629d208 JP |
4480 | int dev_mc_add(struct net_device *dev, const unsigned char *addr); |
4481 | int dev_mc_add_global(struct net_device *dev, const unsigned char *addr); | |
4482 | int dev_mc_add_excl(struct net_device *dev, const unsigned char *addr); | |
4483 | int dev_mc_del(struct net_device *dev, const unsigned char *addr); | |
4484 | int dev_mc_del_global(struct net_device *dev, const unsigned char *addr); | |
4485 | int dev_mc_sync(struct net_device *to, struct net_device *from); | |
4486 | int dev_mc_sync_multiple(struct net_device *to, struct net_device *from); | |
4487 | void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
4488 | void dev_mc_flush(struct net_device *dev); | |
4489 | void dev_mc_init(struct net_device *dev); | |
f001fde5 | 4490 | |
670e5b8e AD |
4491 | /** |
4492 | * __dev_mc_sync - Synchonize device's multicast list | |
4493 | * @dev: device to sync | |
4494 | * @sync: function to call if address should be added | |
4495 | * @unsync: function to call if address should be removed | |
4496 | * | |
4497 | * Add newly added addresses to the interface, and release | |
4498 | * addresses that have been deleted. | |
5e82b4b2 | 4499 | */ |
670e5b8e AD |
4500 | static inline int __dev_mc_sync(struct net_device *dev, |
4501 | int (*sync)(struct net_device *, | |
4502 | const unsigned char *), | |
4503 | int (*unsync)(struct net_device *, | |
4504 | const unsigned char *)) | |
4505 | { | |
4506 | return __hw_addr_sync_dev(&dev->mc, dev, sync, unsync); | |
4507 | } | |
4508 | ||
4509 | /** | |
e793c0f7 | 4510 | * __dev_mc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
4511 | * @dev: device to sync |
4512 | * @unsync: function to call if address should be removed | |
4513 | * | |
4514 | * Remove all addresses that were added to the device by dev_mc_sync(). | |
5e82b4b2 | 4515 | */ |
670e5b8e AD |
4516 | static inline void __dev_mc_unsync(struct net_device *dev, |
4517 | int (*unsync)(struct net_device *, | |
4518 | const unsigned char *)) | |
4519 | { | |
4520 | __hw_addr_unsync_dev(&dev->mc, dev, unsync); | |
4521 | } | |
4522 | ||
4417da66 | 4523 | /* Functions used for secondary unicast and multicast support */ |
f629d208 | 4524 | void dev_set_rx_mode(struct net_device *dev); |
f629d208 JP |
4525 | int dev_set_promiscuity(struct net_device *dev, int inc); |
4526 | int dev_set_allmulti(struct net_device *dev, int inc); | |
4527 | void netdev_state_change(struct net_device *dev); | |
7061eb8c | 4528 | void __netdev_notify_peers(struct net_device *dev); |
f629d208 JP |
4529 | void netdev_notify_peers(struct net_device *dev); |
4530 | void netdev_features_change(struct net_device *dev); | |
1da177e4 | 4531 | /* Load a device via the kmod */ |
f629d208 JP |
4532 | void dev_load(struct net *net, const char *name); |
4533 | struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, | |
4534 | struct rtnl_link_stats64 *storage); | |
4535 | void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64, | |
4536 | const struct net_device_stats *netdev_stats); | |
44fa32f0 HK |
4537 | void dev_fetch_sw_netstats(struct rtnl_link_stats64 *s, |
4538 | const struct pcpu_sw_netstats __percpu *netstats); | |
a1839426 | 4539 | void dev_get_tstats64(struct net_device *dev, struct rtnl_link_stats64 *s); |
eeda3fd6 | 4540 | |
1da177e4 | 4541 | extern int netdev_max_backlog; |
3d48b53f MT |
4542 | extern int dev_rx_weight; |
4543 | extern int dev_tx_weight; | |
323ebb61 | 4544 | extern int gro_normal_batch; |
9ff162a8 | 4545 | |
1fc70edb TY |
4546 | enum { |
4547 | NESTED_SYNC_IMM_BIT, | |
4548 | NESTED_SYNC_TODO_BIT, | |
4549 | }; | |
4550 | ||
4551 | #define __NESTED_SYNC_BIT(bit) ((u32)1 << (bit)) | |
4552 | #define __NESTED_SYNC(name) __NESTED_SYNC_BIT(NESTED_SYNC_ ## name ## _BIT) | |
4553 | ||
4554 | #define NESTED_SYNC_IMM __NESTED_SYNC(IMM) | |
4555 | #define NESTED_SYNC_TODO __NESTED_SYNC(TODO) | |
4556 | ||
eff74233 | 4557 | struct netdev_nested_priv { |
1fc70edb | 4558 | unsigned char flags; |
eff74233 TY |
4559 | void *data; |
4560 | }; | |
4561 | ||
f629d208 | 4562 | bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev); |
44a40855 VY |
4563 | struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev, |
4564 | struct list_head **iter); | |
8b5be856 | 4565 | |
44a40855 VY |
4566 | /* iterate through upper list, must be called under RCU read lock */ |
4567 | #define netdev_for_each_upper_dev_rcu(dev, updev, iter) \ | |
4568 | for (iter = &(dev)->adj_list.upper, \ | |
4569 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter)); \ | |
4570 | updev; \ | |
4571 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter))) | |
4572 | ||
1a3f060c DA |
4573 | int netdev_walk_all_upper_dev_rcu(struct net_device *dev, |
4574 | int (*fn)(struct net_device *upper_dev, | |
eff74233 TY |
4575 | struct netdev_nested_priv *priv), |
4576 | struct netdev_nested_priv *priv); | |
1a3f060c DA |
4577 | |
4578 | bool netdev_has_upper_dev_all_rcu(struct net_device *dev, | |
4579 | struct net_device *upper_dev); | |
4580 | ||
25cc72a3 IS |
4581 | bool netdev_has_any_upper_dev(struct net_device *dev); |
4582 | ||
f629d208 JP |
4583 | void *netdev_lower_get_next_private(struct net_device *dev, |
4584 | struct list_head **iter); | |
4585 | void *netdev_lower_get_next_private_rcu(struct net_device *dev, | |
4586 | struct list_head **iter); | |
31088a11 VF |
4587 | |
4588 | #define netdev_for_each_lower_private(dev, priv, iter) \ | |
4589 | for (iter = (dev)->adj_list.lower.next, \ | |
4590 | priv = netdev_lower_get_next_private(dev, &(iter)); \ | |
4591 | priv; \ | |
4592 | priv = netdev_lower_get_next_private(dev, &(iter))) | |
4593 | ||
4594 | #define netdev_for_each_lower_private_rcu(dev, priv, iter) \ | |
4595 | for (iter = &(dev)->adj_list.lower, \ | |
4596 | priv = netdev_lower_get_next_private_rcu(dev, &(iter)); \ | |
4597 | priv; \ | |
4598 | priv = netdev_lower_get_next_private_rcu(dev, &(iter))) | |
4599 | ||
4085ebe8 VY |
4600 | void *netdev_lower_get_next(struct net_device *dev, |
4601 | struct list_head **iter); | |
7ce856aa | 4602 | |
4085ebe8 | 4603 | #define netdev_for_each_lower_dev(dev, ldev, iter) \ |
cfdd28be | 4604 | for (iter = (dev)->adj_list.lower.next, \ |
4085ebe8 VY |
4605 | ldev = netdev_lower_get_next(dev, &(iter)); \ |
4606 | ldev; \ | |
4607 | ldev = netdev_lower_get_next(dev, &(iter))) | |
4608 | ||
7151affe | 4609 | struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev, |
7ce856aa | 4610 | struct list_head **iter); |
1a3f060c DA |
4611 | int netdev_walk_all_lower_dev(struct net_device *dev, |
4612 | int (*fn)(struct net_device *lower_dev, | |
eff74233 TY |
4613 | struct netdev_nested_priv *priv), |
4614 | struct netdev_nested_priv *priv); | |
1a3f060c DA |
4615 | int netdev_walk_all_lower_dev_rcu(struct net_device *dev, |
4616 | int (*fn)(struct net_device *lower_dev, | |
eff74233 TY |
4617 | struct netdev_nested_priv *priv), |
4618 | struct netdev_nested_priv *priv); | |
1a3f060c | 4619 | |
f629d208 | 4620 | void *netdev_adjacent_get_private(struct list_head *adj_list); |
e001bfad | 4621 | void *netdev_lower_get_first_private_rcu(struct net_device *dev); |
f629d208 JP |
4622 | struct net_device *netdev_master_upper_dev_get(struct net_device *dev); |
4623 | struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev); | |
42ab19ee DA |
4624 | int netdev_upper_dev_link(struct net_device *dev, struct net_device *upper_dev, |
4625 | struct netlink_ext_ack *extack); | |
f629d208 | 4626 | int netdev_master_upper_dev_link(struct net_device *dev, |
6dffb044 | 4627 | struct net_device *upper_dev, |
42ab19ee DA |
4628 | void *upper_priv, void *upper_info, |
4629 | struct netlink_ext_ack *extack); | |
f629d208 JP |
4630 | void netdev_upper_dev_unlink(struct net_device *dev, |
4631 | struct net_device *upper_dev); | |
32b6d34f TY |
4632 | int netdev_adjacent_change_prepare(struct net_device *old_dev, |
4633 | struct net_device *new_dev, | |
4634 | struct net_device *dev, | |
4635 | struct netlink_ext_ack *extack); | |
4636 | void netdev_adjacent_change_commit(struct net_device *old_dev, | |
4637 | struct net_device *new_dev, | |
4638 | struct net_device *dev); | |
4639 | void netdev_adjacent_change_abort(struct net_device *old_dev, | |
4640 | struct net_device *new_dev, | |
4641 | struct net_device *dev); | |
5bb025fa | 4642 | void netdev_adjacent_rename_links(struct net_device *dev, char *oldname); |
f629d208 JP |
4643 | void *netdev_lower_dev_get_private(struct net_device *dev, |
4644 | struct net_device *lower_dev); | |
04d48266 JP |
4645 | void netdev_lower_state_changed(struct net_device *lower_dev, |
4646 | void *lower_state_info); | |
960fb622 ED |
4647 | |
4648 | /* RSS keys are 40 or 52 bytes long */ | |
4649 | #define NETDEV_RSS_KEY_LEN 52 | |
ba905f5e | 4650 | extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
4651 | void netdev_rss_key_fill(void *buffer, size_t len); |
4652 | ||
f629d208 | 4653 | int skb_checksum_help(struct sk_buff *skb); |
b72b5bf6 | 4654 | int skb_crc32c_csum_help(struct sk_buff *skb); |
43c26a1a DC |
4655 | int skb_csum_hwoffload_help(struct sk_buff *skb, |
4656 | const netdev_features_t features); | |
4657 | ||
f629d208 JP |
4658 | struct sk_buff *__skb_gso_segment(struct sk_buff *skb, |
4659 | netdev_features_t features, bool tx_path); | |
23c7f8d7 SK |
4660 | struct sk_buff *skb_eth_gso_segment(struct sk_buff *skb, |
4661 | netdev_features_t features, __be16 type); | |
f629d208 JP |
4662 | struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb, |
4663 | netdev_features_t features); | |
12b0004d | 4664 | |
61bd3857 MS |
4665 | struct netdev_bonding_info { |
4666 | ifslave slave; | |
4667 | ifbond master; | |
4668 | }; | |
4669 | ||
4670 | struct netdev_notifier_bonding_info { | |
4671 | struct netdev_notifier_info info; /* must be first */ | |
4672 | struct netdev_bonding_info bonding_info; | |
4673 | }; | |
4674 | ||
4675 | void netdev_bonding_info_change(struct net_device *dev, | |
4676 | struct netdev_bonding_info *bonding_info); | |
4677 | ||
6b08d6c1 MK |
4678 | #if IS_ENABLED(CONFIG_ETHTOOL_NETLINK) |
4679 | void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data); | |
4680 | #else | |
4681 | static inline void ethtool_notify(struct net_device *dev, unsigned int cmd, | |
4682 | const void *data) | |
4683 | { | |
4684 | } | |
4685 | #endif | |
4686 | ||
12b0004d CW |
4687 | static inline |
4688 | struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features) | |
4689 | { | |
4690 | return __skb_gso_segment(skb, features, true); | |
4691 | } | |
53d6471c | 4692 | __be16 skb_network_protocol(struct sk_buff *skb, int *depth); |
ec5f0615 PS |
4693 | |
4694 | static inline bool can_checksum_protocol(netdev_features_t features, | |
4695 | __be16 protocol) | |
4696 | { | |
c8cd0989 TH |
4697 | if (protocol == htons(ETH_P_FCOE)) |
4698 | return !!(features & NETIF_F_FCOE_CRC); | |
4699 | ||
4700 | /* Assume this is an IP checksum (not SCTP CRC) */ | |
4701 | ||
4702 | if (features & NETIF_F_HW_CSUM) { | |
4703 | /* Can checksum everything */ | |
4704 | return true; | |
4705 | } | |
4706 | ||
4707 | switch (protocol) { | |
4708 | case htons(ETH_P_IP): | |
4709 | return !!(features & NETIF_F_IP_CSUM); | |
4710 | case htons(ETH_P_IPV6): | |
4711 | return !!(features & NETIF_F_IPV6_CSUM); | |
4712 | default: | |
4713 | return false; | |
4714 | } | |
ec5f0615 | 4715 | } |
12b0004d | 4716 | |
fb286bb2 | 4717 | #ifdef CONFIG_BUG |
7fe50ac8 | 4718 | void netdev_rx_csum_fault(struct net_device *dev, struct sk_buff *skb); |
fb286bb2 | 4719 | #else |
7fe50ac8 CW |
4720 | static inline void netdev_rx_csum_fault(struct net_device *dev, |
4721 | struct sk_buff *skb) | |
fb286bb2 HX |
4722 | { |
4723 | } | |
4724 | #endif | |
1da177e4 | 4725 | /* rx skb timestamps */ |
f629d208 JP |
4726 | void net_enable_timestamp(void); |
4727 | void net_disable_timestamp(void); | |
1da177e4 | 4728 | |
4798248e | 4729 | static inline netdev_tx_t __netdev_start_xmit(const struct net_device_ops *ops, |
fa2dbdc2 DM |
4730 | struct sk_buff *skb, struct net_device *dev, |
4731 | bool more) | |
4798248e | 4732 | { |
6b16f9ee | 4733 | __this_cpu_write(softnet_data.xmit.more, more); |
0b725a2c | 4734 | return ops->ndo_start_xmit(skb, dev); |
4798248e DM |
4735 | } |
4736 | ||
97cdcf37 FW |
4737 | static inline bool netdev_xmit_more(void) |
4738 | { | |
4739 | return __this_cpu_read(softnet_data.xmit.more); | |
4740 | } | |
4741 | ||
10b3ad8c | 4742 | static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev, |
fa2dbdc2 | 4743 | struct netdev_queue *txq, bool more) |
4798248e DM |
4744 | { |
4745 | const struct net_device_ops *ops = dev->netdev_ops; | |
2183435c | 4746 | netdev_tx_t rc; |
4798248e | 4747 | |
fa2dbdc2 | 4748 | rc = __netdev_start_xmit(ops, skb, dev, more); |
10b3ad8c DM |
4749 | if (rc == NETDEV_TX_OK) |
4750 | txq_trans_update(txq); | |
4751 | ||
4752 | return rc; | |
4798248e DM |
4753 | } |
4754 | ||
b793dc5c | 4755 | int netdev_class_create_file_ns(const struct class_attribute *class_attr, |
42a2d923 | 4756 | const void *ns); |
b793dc5c | 4757 | void netdev_class_remove_file_ns(const struct class_attribute *class_attr, |
42a2d923 | 4758 | const void *ns); |
58292cbe | 4759 | |
737aec57 | 4760 | extern const struct kobj_ns_type_operations net_ns_type_operations; |
04600794 | 4761 | |
f629d208 | 4762 | const char *netdev_drivername(const struct net_device *dev); |
6579e57b | 4763 | |
da08143b MK |
4764 | static inline netdev_features_t netdev_intersect_features(netdev_features_t f1, |
4765 | netdev_features_t f2) | |
4766 | { | |
c8cd0989 TH |
4767 | if ((f1 ^ f2) & NETIF_F_HW_CSUM) { |
4768 | if (f1 & NETIF_F_HW_CSUM) | |
b6a0e72a | 4769 | f1 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 4770 | else |
b6a0e72a | 4771 | f2 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 4772 | } |
da08143b | 4773 | |
c8cd0989 | 4774 | return f1 & f2; |
da08143b MK |
4775 | } |
4776 | ||
c8f44aff MM |
4777 | static inline netdev_features_t netdev_get_wanted_features( |
4778 | struct net_device *dev) | |
5455c699 MM |
4779 | { |
4780 | return (dev->features & ~dev->hw_features) | dev->wanted_features; | |
4781 | } | |
c8f44aff MM |
4782 | netdev_features_t netdev_increment_features(netdev_features_t all, |
4783 | netdev_features_t one, netdev_features_t mask); | |
b0ce3508 ED |
4784 | |
4785 | /* Allow TSO being used on stacked device : | |
4786 | * Performing the GSO segmentation before last device | |
4787 | * is a performance improvement. | |
4788 | */ | |
4789 | static inline netdev_features_t netdev_add_tso_features(netdev_features_t features, | |
4790 | netdev_features_t mask) | |
4791 | { | |
4792 | return netdev_increment_features(features, NETIF_F_ALL_TSO, mask); | |
4793 | } | |
4794 | ||
6cb6a27c | 4795 | int __netdev_update_features(struct net_device *dev); |
5455c699 | 4796 | void netdev_update_features(struct net_device *dev); |
afe12cc8 | 4797 | void netdev_change_features(struct net_device *dev); |
7f353bf2 | 4798 | |
fc4a7489 PM |
4799 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
4800 | struct net_device *dev); | |
4801 | ||
e38f3025 TM |
4802 | netdev_features_t passthru_features_check(struct sk_buff *skb, |
4803 | struct net_device *dev, | |
4804 | netdev_features_t features); | |
c1e756bf | 4805 | netdev_features_t netif_skb_features(struct sk_buff *skb); |
58e998c6 | 4806 | |
4d29515f | 4807 | static inline bool net_gso_ok(netdev_features_t features, int gso_type) |
576a30eb | 4808 | { |
7b748340 | 4809 | netdev_features_t feature = (netdev_features_t)gso_type << NETIF_F_GSO_SHIFT; |
0345e186 MM |
4810 | |
4811 | /* check flags correspondence */ | |
4812 | BUILD_BUG_ON(SKB_GSO_TCPV4 != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT)); | |
0345e186 MM |
4813 | BUILD_BUG_ON(SKB_GSO_DODGY != (NETIF_F_GSO_ROBUST >> NETIF_F_GSO_SHIFT)); |
4814 | BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT)); | |
cbc53e08 | 4815 | BUILD_BUG_ON(SKB_GSO_TCP_FIXEDID != (NETIF_F_TSO_MANGLEID >> NETIF_F_GSO_SHIFT)); |
0345e186 MM |
4816 | BUILD_BUG_ON(SKB_GSO_TCPV6 != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT)); |
4817 | BUILD_BUG_ON(SKB_GSO_FCOE != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
4818 | BUILD_BUG_ON(SKB_GSO_GRE != (NETIF_F_GSO_GRE >> NETIF_F_GSO_SHIFT)); |
4819 | BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT)); | |
7e13318d TH |
4820 | BUILD_BUG_ON(SKB_GSO_IPXIP4 != (NETIF_F_GSO_IPXIP4 >> NETIF_F_GSO_SHIFT)); |
4821 | BUILD_BUG_ON(SKB_GSO_IPXIP6 != (NETIF_F_GSO_IPXIP6 >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
4822 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT)); |
4823 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT)); | |
802ab55a | 4824 | BUILD_BUG_ON(SKB_GSO_PARTIAL != (NETIF_F_GSO_PARTIAL >> NETIF_F_GSO_SHIFT)); |
e585f236 | 4825 | BUILD_BUG_ON(SKB_GSO_TUNNEL_REMCSUM != (NETIF_F_GSO_TUNNEL_REMCSUM >> NETIF_F_GSO_SHIFT)); |
90017acc | 4826 | BUILD_BUG_ON(SKB_GSO_SCTP != (NETIF_F_GSO_SCTP >> NETIF_F_GSO_SHIFT)); |
c7ef8f0c | 4827 | BUILD_BUG_ON(SKB_GSO_ESP != (NETIF_F_GSO_ESP >> NETIF_F_GSO_SHIFT)); |
0c19f846 | 4828 | BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_GSO_UDP >> NETIF_F_GSO_SHIFT)); |
83aa025f | 4829 | BUILD_BUG_ON(SKB_GSO_UDP_L4 != (NETIF_F_GSO_UDP_L4 >> NETIF_F_GSO_SHIFT)); |
3b335832 | 4830 | BUILD_BUG_ON(SKB_GSO_FRAGLIST != (NETIF_F_GSO_FRAGLIST >> NETIF_F_GSO_SHIFT)); |
0345e186 | 4831 | |
d6b4991a | 4832 | return (features & feature) == feature; |
576a30eb HX |
4833 | } |
4834 | ||
4d29515f | 4835 | static inline bool skb_gso_ok(struct sk_buff *skb, netdev_features_t features) |
bcd76111 | 4836 | { |
278b2513 | 4837 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
21dc3301 | 4838 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
bcd76111 HX |
4839 | } |
4840 | ||
8b86a61d | 4841 | static inline bool netif_needs_gso(struct sk_buff *skb, |
4d29515f | 4842 | netdev_features_t features) |
7967168c | 4843 | { |
fc741216 | 4844 | return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || |
cdbee74c YZ |
4845 | unlikely((skb->ip_summed != CHECKSUM_PARTIAL) && |
4846 | (skb->ip_summed != CHECKSUM_UNNECESSARY))); | |
7967168c HX |
4847 | } |
4848 | ||
82cc1a7a PWJ |
4849 | static inline void netif_set_gso_max_size(struct net_device *dev, |
4850 | unsigned int size) | |
4851 | { | |
4b66d216 ED |
4852 | /* dev->gso_max_size is read locklessly from sk_setup_caps() */ |
4853 | WRITE_ONCE(dev->gso_max_size, size); | |
82cc1a7a PWJ |
4854 | } |
4855 | ||
6d872df3 ED |
4856 | static inline void netif_set_gso_max_segs(struct net_device *dev, |
4857 | unsigned int segs) | |
4858 | { | |
4859 | /* dev->gso_max_segs is read locklessly from sk_setup_caps() */ | |
4860 | WRITE_ONCE(dev->gso_max_segs, segs); | |
4861 | } | |
4862 | ||
eac1b93c CL |
4863 | static inline void netif_set_gro_max_size(struct net_device *dev, |
4864 | unsigned int size) | |
4865 | { | |
4866 | /* This pairs with the READ_ONCE() in skb_gro_receive() */ | |
4867 | WRITE_ONCE(dev->gro_max_size, size); | |
4868 | } | |
4869 | ||
7a7ffbab WCC |
4870 | static inline void skb_gso_error_unwind(struct sk_buff *skb, __be16 protocol, |
4871 | int pulled_hlen, u16 mac_offset, | |
4872 | int mac_len) | |
4873 | { | |
4874 | skb->protocol = protocol; | |
4875 | skb->encapsulation = 1; | |
4876 | skb_push(skb, pulled_hlen); | |
4877 | skb_reset_transport_header(skb); | |
4878 | skb->mac_header = mac_offset; | |
4879 | skb->network_header = skb->mac_header + mac_len; | |
4880 | skb->mac_len = mac_len; | |
4881 | } | |
4882 | ||
3c175784 SD |
4883 | static inline bool netif_is_macsec(const struct net_device *dev) |
4884 | { | |
4885 | return dev->priv_flags & IFF_MACSEC; | |
4886 | } | |
4887 | ||
b618aaa9 | 4888 | static inline bool netif_is_macvlan(const struct net_device *dev) |
a6cc0cfa JF |
4889 | { |
4890 | return dev->priv_flags & IFF_MACVLAN; | |
4891 | } | |
4892 | ||
b618aaa9 | 4893 | static inline bool netif_is_macvlan_port(const struct net_device *dev) |
2f33e7d5 MB |
4894 | { |
4895 | return dev->priv_flags & IFF_MACVLAN_PORT; | |
4896 | } | |
4897 | ||
b618aaa9 | 4898 | static inline bool netif_is_bond_master(const struct net_device *dev) |
8a7fbfab | 4899 | { |
4900 | return dev->flags & IFF_MASTER && dev->priv_flags & IFF_BONDING; | |
4901 | } | |
4902 | ||
b618aaa9 | 4903 | static inline bool netif_is_bond_slave(const struct net_device *dev) |
1765a575 JP |
4904 | { |
4905 | return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING; | |
4906 | } | |
4907 | ||
3bdc0eba BG |
4908 | static inline bool netif_supports_nofcs(struct net_device *dev) |
4909 | { | |
4910 | return dev->priv_flags & IFF_SUPP_NOFCS; | |
4911 | } | |
4912 | ||
d5256083 DB |
4913 | static inline bool netif_has_l3_rx_handler(const struct net_device *dev) |
4914 | { | |
4915 | return dev->priv_flags & IFF_L3MDEV_RX_HANDLER; | |
4916 | } | |
4917 | ||
007979ea | 4918 | static inline bool netif_is_l3_master(const struct net_device *dev) |
4e3c8992 | 4919 | { |
007979ea | 4920 | return dev->priv_flags & IFF_L3MDEV_MASTER; |
4e3c8992 DA |
4921 | } |
4922 | ||
fee6d4c7 DA |
4923 | static inline bool netif_is_l3_slave(const struct net_device *dev) |
4924 | { | |
4925 | return dev->priv_flags & IFF_L3MDEV_SLAVE; | |
4926 | } | |
4927 | ||
0894ae3f JP |
4928 | static inline bool netif_is_bridge_master(const struct net_device *dev) |
4929 | { | |
4930 | return dev->priv_flags & IFF_EBRIDGE; | |
4931 | } | |
4932 | ||
28f9ee22 VY |
4933 | static inline bool netif_is_bridge_port(const struct net_device *dev) |
4934 | { | |
4935 | return dev->priv_flags & IFF_BRIDGE_PORT; | |
4936 | } | |
4937 | ||
35d4e172 JP |
4938 | static inline bool netif_is_ovs_master(const struct net_device *dev) |
4939 | { | |
4940 | return dev->priv_flags & IFF_OPENVSWITCH; | |
4941 | } | |
4942 | ||
5be66141 JP |
4943 | static inline bool netif_is_ovs_port(const struct net_device *dev) |
4944 | { | |
4945 | return dev->priv_flags & IFF_OVS_DATAPATH; | |
4946 | } | |
4947 | ||
df23bb18 SB |
4948 | static inline bool netif_is_any_bridge_port(const struct net_device *dev) |
4949 | { | |
4950 | return netif_is_bridge_port(dev) || netif_is_ovs_port(dev); | |
4951 | } | |
4952 | ||
b618aaa9 | 4953 | static inline bool netif_is_team_master(const struct net_device *dev) |
c981e421 JP |
4954 | { |
4955 | return dev->priv_flags & IFF_TEAM; | |
4956 | } | |
4957 | ||
b618aaa9 | 4958 | static inline bool netif_is_team_port(const struct net_device *dev) |
f7f019ee JP |
4959 | { |
4960 | return dev->priv_flags & IFF_TEAM_PORT; | |
4961 | } | |
4962 | ||
b618aaa9 | 4963 | static inline bool netif_is_lag_master(const struct net_device *dev) |
7be61833 JP |
4964 | { |
4965 | return netif_is_bond_master(dev) || netif_is_team_master(dev); | |
4966 | } | |
4967 | ||
b618aaa9 | 4968 | static inline bool netif_is_lag_port(const struct net_device *dev) |
e0ba1414 JP |
4969 | { |
4970 | return netif_is_bond_slave(dev) || netif_is_team_port(dev); | |
4971 | } | |
4972 | ||
d4ab4286 KJ |
4973 | static inline bool netif_is_rxfh_configured(const struct net_device *dev) |
4974 | { | |
4975 | return dev->priv_flags & IFF_RXFH_CONFIGURED; | |
4976 | } | |
4977 | ||
30c8bd5a SS |
4978 | static inline bool netif_is_failover(const struct net_device *dev) |
4979 | { | |
4980 | return dev->priv_flags & IFF_FAILOVER; | |
4981 | } | |
4982 | ||
4983 | static inline bool netif_is_failover_slave(const struct net_device *dev) | |
4984 | { | |
4985 | return dev->priv_flags & IFF_FAILOVER_SLAVE; | |
4986 | } | |
4987 | ||
02875878 ED |
4988 | /* This device needs to keep skb dst for qdisc enqueue or ndo_start_xmit() */ |
4989 | static inline void netif_keep_dst(struct net_device *dev) | |
4990 | { | |
4991 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM); | |
4992 | } | |
4993 | ||
18d3df3e PA |
4994 | /* return true if dev can't cope with mtu frames that need vlan tag insertion */ |
4995 | static inline bool netif_reduces_vlan_mtu(struct net_device *dev) | |
4996 | { | |
4997 | /* TODO: reserve and use an additional IFF bit, if we get more users */ | |
01992152 | 4998 | return netif_is_macsec(dev); |
18d3df3e PA |
4999 | } |
5000 | ||
505d4f73 | 5001 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 | 5002 | |
571ba423 JP |
5003 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ |
5004 | ||
5005 | /* netdev_printk helpers, similar to dev_printk */ | |
5006 | ||
5007 | static inline const char *netdev_name(const struct net_device *dev) | |
5008 | { | |
c6f854d5 VF |
5009 | if (!dev->name[0] || strchr(dev->name, '%')) |
5010 | return "(unnamed net_device)"; | |
571ba423 JP |
5011 | return dev->name; |
5012 | } | |
5013 | ||
8397ed36 DA |
5014 | static inline bool netdev_unregistering(const struct net_device *dev) |
5015 | { | |
5016 | return dev->reg_state == NETREG_UNREGISTERING; | |
5017 | } | |
5018 | ||
ccc7f496 VF |
5019 | static inline const char *netdev_reg_state(const struct net_device *dev) |
5020 | { | |
5021 | switch (dev->reg_state) { | |
5022 | case NETREG_UNINITIALIZED: return " (uninitialized)"; | |
5023 | case NETREG_REGISTERED: return ""; | |
5024 | case NETREG_UNREGISTERING: return " (unregistering)"; | |
5025 | case NETREG_UNREGISTERED: return " (unregistered)"; | |
5026 | case NETREG_RELEASED: return " (released)"; | |
5027 | case NETREG_DUMMY: return " (dummy)"; | |
5028 | } | |
5029 | ||
5030 | WARN_ONCE(1, "%s: unknown reg_state %d\n", dev->name, dev->reg_state); | |
5031 | return " (unknown)"; | |
5032 | } | |
5033 | ||
ce3fdb69 | 5034 | __printf(3, 4) __cold |
6ea754eb JP |
5035 | void netdev_printk(const char *level, const struct net_device *dev, |
5036 | const char *format, ...); | |
ce3fdb69 | 5037 | __printf(2, 3) __cold |
6ea754eb | 5038 | void netdev_emerg(const struct net_device *dev, const char *format, ...); |
ce3fdb69 | 5039 | __printf(2, 3) __cold |
6ea754eb | 5040 | void netdev_alert(const struct net_device *dev, const char *format, ...); |
ce3fdb69 | 5041 | __printf(2, 3) __cold |
6ea754eb | 5042 | void netdev_crit(const struct net_device *dev, const char *format, ...); |
ce3fdb69 | 5043 | __printf(2, 3) __cold |
6ea754eb | 5044 | void netdev_err(const struct net_device *dev, const char *format, ...); |
ce3fdb69 | 5045 | __printf(2, 3) __cold |
6ea754eb | 5046 | void netdev_warn(const struct net_device *dev, const char *format, ...); |
ce3fdb69 | 5047 | __printf(2, 3) __cold |
6ea754eb | 5048 | void netdev_notice(const struct net_device *dev, const char *format, ...); |
ce3fdb69 | 5049 | __printf(2, 3) __cold |
6ea754eb | 5050 | void netdev_info(const struct net_device *dev, const char *format, ...); |
571ba423 | 5051 | |
375ef2b1 GP |
5052 | #define netdev_level_once(level, dev, fmt, ...) \ |
5053 | do { \ | |
7071732c | 5054 | static bool __section(".data.once") __print_once; \ |
375ef2b1 GP |
5055 | \ |
5056 | if (!__print_once) { \ | |
5057 | __print_once = true; \ | |
5058 | netdev_printk(level, dev, fmt, ##__VA_ARGS__); \ | |
5059 | } \ | |
5060 | } while (0) | |
5061 | ||
5062 | #define netdev_emerg_once(dev, fmt, ...) \ | |
5063 | netdev_level_once(KERN_EMERG, dev, fmt, ##__VA_ARGS__) | |
5064 | #define netdev_alert_once(dev, fmt, ...) \ | |
5065 | netdev_level_once(KERN_ALERT, dev, fmt, ##__VA_ARGS__) | |
5066 | #define netdev_crit_once(dev, fmt, ...) \ | |
5067 | netdev_level_once(KERN_CRIT, dev, fmt, ##__VA_ARGS__) | |
5068 | #define netdev_err_once(dev, fmt, ...) \ | |
5069 | netdev_level_once(KERN_ERR, dev, fmt, ##__VA_ARGS__) | |
5070 | #define netdev_warn_once(dev, fmt, ...) \ | |
5071 | netdev_level_once(KERN_WARNING, dev, fmt, ##__VA_ARGS__) | |
5072 | #define netdev_notice_once(dev, fmt, ...) \ | |
5073 | netdev_level_once(KERN_NOTICE, dev, fmt, ##__VA_ARGS__) | |
5074 | #define netdev_info_once(dev, fmt, ...) \ | |
5075 | netdev_level_once(KERN_INFO, dev, fmt, ##__VA_ARGS__) | |
5076 | ||
8909c9ad VK |
5077 | #define MODULE_ALIAS_NETDEV(device) \ |
5078 | MODULE_ALIAS("netdev-" device) | |
5079 | ||
ceabef7d OZ |
5080 | #if defined(CONFIG_DYNAMIC_DEBUG) || \ |
5081 | (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) | |
571ba423 JP |
5082 | #define netdev_dbg(__dev, format, args...) \ |
5083 | do { \ | |
ffa10cb4 | 5084 | dynamic_netdev_dbg(__dev, format, ##args); \ |
571ba423 | 5085 | } while (0) |
b558c96f JC |
5086 | #elif defined(DEBUG) |
5087 | #define netdev_dbg(__dev, format, args...) \ | |
5088 | netdev_printk(KERN_DEBUG, __dev, format, ##args) | |
571ba423 JP |
5089 | #else |
5090 | #define netdev_dbg(__dev, format, args...) \ | |
5091 | ({ \ | |
5092 | if (0) \ | |
5093 | netdev_printk(KERN_DEBUG, __dev, format, ##args); \ | |
571ba423 JP |
5094 | }) |
5095 | #endif | |
5096 | ||
5097 | #if defined(VERBOSE_DEBUG) | |
5098 | #define netdev_vdbg netdev_dbg | |
5099 | #else | |
5100 | ||
5101 | #define netdev_vdbg(dev, format, args...) \ | |
5102 | ({ \ | |
5103 | if (0) \ | |
5104 | netdev_printk(KERN_DEBUG, dev, format, ##args); \ | |
5105 | 0; \ | |
5106 | }) | |
5107 | #endif | |
5108 | ||
5109 | /* | |
5110 | * netdev_WARN() acts like dev_printk(), but with the key difference | |
5111 | * of using a WARN/WARN_ON to get the message out, including the | |
5112 | * file/line information and a backtrace. | |
5113 | */ | |
5114 | #define netdev_WARN(dev, format, args...) \ | |
e1cfe3d0 | 5115 | WARN(1, "netdevice: %s%s: " format, netdev_name(dev), \ |
ccc7f496 | 5116 | netdev_reg_state(dev), ##args) |
571ba423 | 5117 | |
72dd831e | 5118 | #define netdev_WARN_ONCE(dev, format, args...) \ |
e1cfe3d0 | 5119 | WARN_ONCE(1, "netdevice: %s%s: " format, netdev_name(dev), \ |
375ef2b1 GP |
5120 | netdev_reg_state(dev), ##args) |
5121 | ||
b3d95c5c JP |
5122 | /* netif printk helpers, similar to netdev_printk */ |
5123 | ||
5124 | #define netif_printk(priv, type, level, dev, fmt, args...) \ | |
5125 | do { \ | |
5126 | if (netif_msg_##type(priv)) \ | |
5127 | netdev_printk(level, (dev), fmt, ##args); \ | |
5128 | } while (0) | |
5129 | ||
f45f4321 JP |
5130 | #define netif_level(level, priv, type, dev, fmt, args...) \ |
5131 | do { \ | |
5132 | if (netif_msg_##type(priv)) \ | |
5133 | netdev_##level(dev, fmt, ##args); \ | |
5134 | } while (0) | |
5135 | ||
b3d95c5c | 5136 | #define netif_emerg(priv, type, dev, fmt, args...) \ |
f45f4321 | 5137 | netif_level(emerg, priv, type, dev, fmt, ##args) |
b3d95c5c | 5138 | #define netif_alert(priv, type, dev, fmt, args...) \ |
f45f4321 | 5139 | netif_level(alert, priv, type, dev, fmt, ##args) |
b3d95c5c | 5140 | #define netif_crit(priv, type, dev, fmt, args...) \ |
f45f4321 | 5141 | netif_level(crit, priv, type, dev, fmt, ##args) |
b3d95c5c | 5142 | #define netif_err(priv, type, dev, fmt, args...) \ |
f45f4321 | 5143 | netif_level(err, priv, type, dev, fmt, ##args) |
b3d95c5c | 5144 | #define netif_warn(priv, type, dev, fmt, args...) \ |
f45f4321 | 5145 | netif_level(warn, priv, type, dev, fmt, ##args) |
b3d95c5c | 5146 | #define netif_notice(priv, type, dev, fmt, args...) \ |
f45f4321 | 5147 | netif_level(notice, priv, type, dev, fmt, ##args) |
b3d95c5c | 5148 | #define netif_info(priv, type, dev, fmt, args...) \ |
f45f4321 | 5149 | netif_level(info, priv, type, dev, fmt, ##args) |
b3d95c5c | 5150 | |
ceabef7d OZ |
5151 | #if defined(CONFIG_DYNAMIC_DEBUG) || \ |
5152 | (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) | |
b3d95c5c JP |
5153 | #define netif_dbg(priv, type, netdev, format, args...) \ |
5154 | do { \ | |
5155 | if (netif_msg_##type(priv)) \ | |
b5fb0a03 | 5156 | dynamic_netdev_dbg(netdev, format, ##args); \ |
b3d95c5c | 5157 | } while (0) |
0053ea9c JP |
5158 | #elif defined(DEBUG) |
5159 | #define netif_dbg(priv, type, dev, format, args...) \ | |
5160 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args) | |
b3d95c5c JP |
5161 | #else |
5162 | #define netif_dbg(priv, type, dev, format, args...) \ | |
5163 | ({ \ | |
5164 | if (0) \ | |
5165 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ | |
5166 | 0; \ | |
5167 | }) | |
5168 | #endif | |
5169 | ||
f617f276 EC |
5170 | /* if @cond then downgrade to debug, else print at @level */ |
5171 | #define netif_cond_dbg(priv, type, netdev, cond, level, fmt, args...) \ | |
5172 | do { \ | |
5173 | if (cond) \ | |
5174 | netif_dbg(priv, type, netdev, fmt, ##args); \ | |
5175 | else \ | |
5176 | netif_ ## level(priv, type, netdev, fmt, ##args); \ | |
5177 | } while (0) | |
5178 | ||
b3d95c5c | 5179 | #if defined(VERBOSE_DEBUG) |
bcfcc450 | 5180 | #define netif_vdbg netif_dbg |
b3d95c5c JP |
5181 | #else |
5182 | #define netif_vdbg(priv, type, dev, format, args...) \ | |
5183 | ({ \ | |
5184 | if (0) \ | |
a4ed89cb | 5185 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
b3d95c5c JP |
5186 | 0; \ |
5187 | }) | |
5188 | #endif | |
571ba423 | 5189 | |
900ff8c6 CW |
5190 | /* |
5191 | * The list of packet types we will receive (as opposed to discard) | |
5192 | * and the routines to invoke. | |
5193 | * | |
5194 | * Why 16. Because with 16 the only overlap we get on a hash of the | |
5195 | * low nibble of the protocol value is RARP/SNAP/X.25. | |
5196 | * | |
900ff8c6 | 5197 | * 0800 IP |
900ff8c6 CW |
5198 | * 0001 802.3 |
5199 | * 0002 AX.25 | |
5200 | * 0004 802.2 | |
5201 | * 8035 RARP | |
5202 | * 0005 SNAP | |
5203 | * 0805 X.25 | |
5204 | * 0806 ARP | |
5205 | * 8137 IPX | |
5206 | * 0009 Localtalk | |
5207 | * 86DD IPv6 | |
5208 | */ | |
5209 | #define PTYPE_HASH_SIZE (16) | |
5210 | #define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) | |
5211 | ||
744b8376 VO |
5212 | extern struct list_head ptype_all __read_mostly; |
5213 | extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly; | |
5214 | ||
4de83b88 MB |
5215 | extern struct net_device *blackhole_netdev; |
5216 | ||
385a154c | 5217 | #endif /* _LINUX_NETDEVICE_H */ |