Commit | Line | Data |
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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> |
d3d854fd | 50 | #include <uapi/linux/netdev.h> |
59cc1f61 | 51 | #include <linux/hashtable.h> |
406f42fa | 52 | #include <linux/rbtree.h> |
9ba74e6c | 53 | #include <net/net_trackers.h> |
5b87be9e | 54 | #include <net/net_debug.h> |
a59e2ecb | 55 | |
115c1d6e | 56 | struct netpoll_info; |
313162d0 | 57 | struct device; |
cc69837f | 58 | struct ethtool_ops; |
c1f19b51 | 59 | struct phy_device; |
2f657a60 | 60 | struct dsa_port; |
607259a6 | 61 | struct ip_tunnel_parm; |
30e9bb84 AT |
62 | struct macsec_context; |
63 | struct macsec_ops; | |
6264f58c JK |
64 | struct netdev_name_node; |
65 | struct sd_flow_limit; | |
e679c9c1 | 66 | struct sfp_bus; |
704232c2 JB |
67 | /* 802.11 specific */ |
68 | struct wireless_dev; | |
98a18b6f AA |
69 | /* 802.15.4 specific */ |
70 | struct wpan_dev; | |
03c57747 | 71 | struct mpls_dev; |
7c46a640 AD |
72 | /* UDP Tunnel offloads */ |
73 | struct udp_tunnel_info; | |
cc4e3835 JK |
74 | struct udp_tunnel_nic_info; |
75 | struct udp_tunnel_nic; | |
a7862b45 | 76 | struct bpf_prog; |
814abfab | 77 | struct xdp_buff; |
3d76a4d3 | 78 | struct xdp_md; |
1da177e4 | 79 | |
5198d545 | 80 | void synchronize_net(void); |
f629d208 JP |
81 | void netdev_set_default_ethtool_ops(struct net_device *dev, |
82 | const struct ethtool_ops *ops); | |
d9360708 | 83 | void netdev_sw_irq_coalesce_default_on(struct net_device *dev); |
d07d7507 | 84 | |
9a1654ba JP |
85 | /* Backlog congestion levels */ |
86 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
87 | #define NET_RX_DROP 1 /* packet dropped */ | |
88 | ||
7151affe TY |
89 | #define MAX_NEST_DEV 8 |
90 | ||
572a9d7b PM |
91 | /* |
92 | * Transmit return codes: transmit return codes originate from three different | |
93 | * namespaces: | |
94 | * | |
95 | * - qdisc return codes | |
96 | * - driver transmit return codes | |
97 | * - errno values | |
98 | * | |
99 | * Drivers are allowed to return any one of those in their hard_start_xmit() | |
100 | * function. Real network devices commonly used with qdiscs should only return | |
101 | * the driver transmit return codes though - when qdiscs are used, the actual | |
102 | * transmission happens asynchronously, so the value is not propagated to | |
5e82b4b2 BH |
103 | * higher layers. Virtual network devices transmit synchronously; in this case |
104 | * the driver transmit return codes are consumed by dev_queue_xmit(), and all | |
572a9d7b PM |
105 | * others are propagated to higher layers. |
106 | */ | |
107 | ||
108 | /* qdisc ->enqueue() return codes. */ | |
109 | #define NET_XMIT_SUCCESS 0x00 | |
9a1654ba JP |
110 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
111 | #define NET_XMIT_CN 0x02 /* congestion notification */ | |
9a1654ba | 112 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ |
1da177e4 | 113 | |
b9df3cb8 GR |
114 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
115 | * indicates that the device will soon be dropping packets, or already drops | |
116 | * some packets of the same priority; prompting us to send less aggressively. */ | |
572a9d7b | 117 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
1da177e4 LT |
118 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
119 | ||
dc1f8bf6 | 120 | /* Driver transmit return codes */ |
9a1654ba | 121 | #define NETDEV_TX_MASK 0xf0 |
572a9d7b | 122 | |
dc1f8bf6 | 123 | enum netdev_tx { |
572a9d7b | 124 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
9a1654ba JP |
125 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
126 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ | |
dc1f8bf6 SH |
127 | }; |
128 | typedef enum netdev_tx netdev_tx_t; | |
129 | ||
9a1654ba JP |
130 | /* |
131 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; | |
132 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. | |
133 | */ | |
134 | static inline bool dev_xmit_complete(int rc) | |
135 | { | |
136 | /* | |
137 | * Positive cases with an skb consumed by a driver: | |
138 | * - successful transmission (rc == NETDEV_TX_OK) | |
139 | * - error while transmitting (rc < 0) | |
140 | * - error while queueing to a different device (rc & NET_XMIT_MASK) | |
141 | */ | |
142 | if (likely(rc < NET_XMIT_MASK)) | |
143 | return true; | |
144 | ||
145 | return false; | |
146 | } | |
147 | ||
1da177e4 | 148 | /* |
5e82b4b2 | 149 | * Compute the worst-case header length according to the protocols |
1da177e4 LT |
150 | * used. |
151 | */ | |
fe2918b0 | 152 | |
c0eb4540 KS |
153 | #if defined(CONFIG_HYPERV_NET) |
154 | # define LL_MAX_HEADER 128 | |
155 | #elif defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) | |
8388e3da DM |
156 | # if defined(CONFIG_MAC80211_MESH) |
157 | # define LL_MAX_HEADER 128 | |
158 | # else | |
159 | # define LL_MAX_HEADER 96 | |
160 | # endif | |
1da177e4 | 161 | #else |
8388e3da | 162 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
163 | #endif |
164 | ||
d11ead75 BH |
165 | #if !IS_ENABLED(CONFIG_NET_IPIP) && !IS_ENABLED(CONFIG_NET_IPGRE) && \ |
166 | !IS_ENABLED(CONFIG_IPV6_SIT) && !IS_ENABLED(CONFIG_IPV6_TUNNEL) | |
1da177e4 LT |
167 | #define MAX_HEADER LL_MAX_HEADER |
168 | #else | |
169 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
170 | #endif | |
171 | ||
172 | /* | |
be1f3c2c BH |
173 | * Old network device statistics. Fields are native words |
174 | * (unsigned long) so they can be read and written atomically. | |
1da177e4 | 175 | */ |
fe2918b0 | 176 | |
6c1c5097 ED |
177 | #define NET_DEV_STAT(FIELD) \ |
178 | union { \ | |
179 | unsigned long FIELD; \ | |
180 | atomic_long_t __##FIELD; \ | |
181 | } | |
182 | ||
d94d9fee | 183 | struct net_device_stats { |
6c1c5097 ED |
184 | NET_DEV_STAT(rx_packets); |
185 | NET_DEV_STAT(tx_packets); | |
186 | NET_DEV_STAT(rx_bytes); | |
187 | NET_DEV_STAT(tx_bytes); | |
188 | NET_DEV_STAT(rx_errors); | |
189 | NET_DEV_STAT(tx_errors); | |
190 | NET_DEV_STAT(rx_dropped); | |
191 | NET_DEV_STAT(tx_dropped); | |
192 | NET_DEV_STAT(multicast); | |
193 | NET_DEV_STAT(collisions); | |
194 | NET_DEV_STAT(rx_length_errors); | |
195 | NET_DEV_STAT(rx_over_errors); | |
196 | NET_DEV_STAT(rx_crc_errors); | |
197 | NET_DEV_STAT(rx_frame_errors); | |
198 | NET_DEV_STAT(rx_fifo_errors); | |
199 | NET_DEV_STAT(rx_missed_errors); | |
200 | NET_DEV_STAT(tx_aborted_errors); | |
201 | NET_DEV_STAT(tx_carrier_errors); | |
202 | NET_DEV_STAT(tx_fifo_errors); | |
203 | NET_DEV_STAT(tx_heartbeat_errors); | |
204 | NET_DEV_STAT(tx_window_errors); | |
205 | NET_DEV_STAT(rx_compressed); | |
206 | NET_DEV_STAT(tx_compressed); | |
1da177e4 | 207 | }; |
6c1c5097 | 208 | #undef NET_DEV_STAT |
1da177e4 | 209 | |
625788b5 ED |
210 | /* per-cpu stats, allocated on demand. |
211 | * Try to fit them in a single cache line, for dev_get_stats() sake. | |
212 | */ | |
213 | struct net_device_core_stats { | |
6510ea97 SAS |
214 | unsigned long rx_dropped; |
215 | unsigned long tx_dropped; | |
216 | unsigned long rx_nohandler; | |
0e55546b | 217 | unsigned long rx_otherhost_dropped; |
6510ea97 | 218 | } __aligned(4 * sizeof(unsigned long)); |
1da177e4 LT |
219 | |
220 | #include <linux/cache.h> | |
221 | #include <linux/skbuff.h> | |
222 | ||
adc9300e | 223 | #ifdef CONFIG_RPS |
c5905afb | 224 | #include <linux/static_key.h> |
dc05360f ED |
225 | extern struct static_key_false rps_needed; |
226 | extern struct static_key_false rfs_needed; | |
adc9300e ED |
227 | #endif |
228 | ||
1da177e4 LT |
229 | struct neighbour; |
230 | struct neigh_parms; | |
231 | struct sk_buff; | |
232 | ||
f001fde5 JP |
233 | struct netdev_hw_addr { |
234 | struct list_head list; | |
406f42fa | 235 | struct rb_node node; |
f001fde5 JP |
236 | unsigned char addr[MAX_ADDR_LEN]; |
237 | unsigned char type; | |
ccffad25 JP |
238 | #define NETDEV_HW_ADDR_T_LAN 1 |
239 | #define NETDEV_HW_ADDR_T_SAN 2 | |
8e1b3884 TY |
240 | #define NETDEV_HW_ADDR_T_UNICAST 3 |
241 | #define NETDEV_HW_ADDR_T_MULTICAST 4 | |
22bedad3 | 242 | bool global_use; |
4cd729b0 | 243 | int sync_cnt; |
8f8f103d | 244 | int refcount; |
4543fbef | 245 | int synced; |
f001fde5 JP |
246 | struct rcu_head rcu_head; |
247 | }; | |
248 | ||
31278e71 JP |
249 | struct netdev_hw_addr_list { |
250 | struct list_head list; | |
251 | int count; | |
406f42fa GN |
252 | |
253 | /* Auxiliary tree for faster lookup on addition and deletion */ | |
254 | struct rb_root tree; | |
31278e71 JP |
255 | }; |
256 | ||
22bedad3 JP |
257 | #define netdev_hw_addr_list_count(l) ((l)->count) |
258 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) | |
259 | #define netdev_hw_addr_list_for_each(ha, l) \ | |
260 | list_for_each_entry(ha, &(l)->list, list) | |
32e7bfc4 | 261 | |
22bedad3 JP |
262 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
263 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) | |
264 | #define netdev_for_each_uc_addr(ha, dev) \ | |
265 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) | |
db01868b VO |
266 | #define netdev_for_each_synced_uc_addr(_ha, _dev) \ |
267 | netdev_for_each_uc_addr((_ha), (_dev)) \ | |
268 | if ((_ha)->sync_cnt) | |
6683ece3 | 269 | |
22bedad3 JP |
270 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
271 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) | |
18e225f2 | 272 | #define netdev_for_each_mc_addr(ha, dev) \ |
22bedad3 | 273 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
db01868b VO |
274 | #define netdev_for_each_synced_mc_addr(_ha, _dev) \ |
275 | netdev_for_each_mc_addr((_ha), (_dev)) \ | |
276 | if ((_ha)->sync_cnt) | |
6683ece3 | 277 | |
d94d9fee | 278 | struct hh_cache { |
5b3dc2f3 | 279 | unsigned int hh_len; |
3644f0ce | 280 | seqlock_t hh_lock; |
1da177e4 LT |
281 | |
282 | /* cached hardware header; allow for machine alignment needs. */ | |
283 | #define HH_DATA_MOD 16 | |
284 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 285 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
286 | #define HH_DATA_ALIGN(__len) \ |
287 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
288 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
289 | }; | |
290 | ||
5e82b4b2 | 291 | /* Reserve HH_DATA_MOD byte-aligned hard_header_len, but at least that much. |
1da177e4 LT |
292 | * Alternative is: |
293 | * dev->hard_header_len ? (dev->hard_header_len + | |
294 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
295 | * | |
296 | * We could use other alignment values, but we must maintain the | |
297 | * relationship HH alignment <= LL alignment. | |
298 | */ | |
299 | #define LL_RESERVED_SPACE(dev) \ | |
4b397c06 ED |
300 | ((((dev)->hard_header_len + READ_ONCE((dev)->needed_headroom)) \ |
301 | & ~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
1da177e4 | 302 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
4b397c06 ED |
303 | ((((dev)->hard_header_len + READ_ONCE((dev)->needed_headroom) + (extra)) \ |
304 | & ~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
1da177e4 | 305 | |
3b04ddde SH |
306 | struct header_ops { |
307 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
308 | unsigned short type, const void *daddr, | |
95c96174 | 309 | const void *saddr, unsigned int len); |
3b04ddde | 310 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); |
e69dd336 | 311 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh, __be16 type); |
3b04ddde SH |
312 | void (*cache_update)(struct hh_cache *hh, |
313 | const struct net_device *dev, | |
314 | const unsigned char *haddr); | |
2793a23a | 315 | bool (*validate)(const char *ll_header, unsigned int len); |
e78b2915 | 316 | __be16 (*parse_protocol)(const struct sk_buff *skb); |
3b04ddde SH |
317 | }; |
318 | ||
1da177e4 | 319 | /* These flag bits are private to the generic network queueing |
5e82b4b2 | 320 | * layer; they may not be explicitly referenced by any other |
1da177e4 LT |
321 | * code. |
322 | */ | |
323 | ||
d94d9fee | 324 | enum netdev_state_t { |
1da177e4 LT |
325 | __LINK_STATE_START, |
326 | __LINK_STATE_PRESENT, | |
1da177e4 | 327 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
328 | __LINK_STATE_LINKWATCH_PENDING, |
329 | __LINK_STATE_DORMANT, | |
eec517cd | 330 | __LINK_STATE_TESTING, |
1da177e4 LT |
331 | }; |
332 | ||
6312fe77 LR |
333 | struct gro_list { |
334 | struct list_head list; | |
335 | int count; | |
336 | }; | |
337 | ||
bea3348e | 338 | /* |
d9f37d01 LR |
339 | * size of gro hash buckets, must less than bit number of |
340 | * napi_struct::gro_bitmask | |
bea3348e | 341 | */ |
07d78363 | 342 | #define GRO_HASH_BUCKETS 8 |
d9f37d01 LR |
343 | |
344 | /* | |
345 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
346 | */ | |
bea3348e SH |
347 | struct napi_struct { |
348 | /* The poll_list must only be managed by the entity which | |
349 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
350 | * whoever atomically sets that bit can add this napi_struct | |
5e82b4b2 | 351 | * to the per-CPU poll_list, and whoever clears that bit |
bea3348e SH |
352 | * can remove from the list right before clearing the bit. |
353 | */ | |
354 | struct list_head poll_list; | |
355 | ||
356 | unsigned long state; | |
357 | int weight; | |
6f8b12d6 | 358 | int defer_hard_irqs_count; |
d9f37d01 | 359 | unsigned long gro_bitmask; |
bea3348e SH |
360 | int (*poll)(struct napi_struct *, int); |
361 | #ifdef CONFIG_NETPOLL | |
bea3348e | 362 | int poll_owner; |
bea3348e | 363 | #endif |
5d38a079 | 364 | struct net_device *dev; |
6312fe77 | 365 | struct gro_list gro_hash[GRO_HASH_BUCKETS]; |
5d38a079 | 366 | struct sk_buff *skb; |
323ebb61 EC |
367 | struct list_head rx_list; /* Pending GRO_NORMAL skbs */ |
368 | int rx_count; /* length of rx_list */ | |
3b47d303 | 369 | struct hrtimer timer; |
404f7c9e | 370 | struct list_head dev_list; |
af12fa6e ET |
371 | struct hlist_node napi_hash_node; |
372 | unsigned int napi_id; | |
29863d41 | 373 | struct task_struct *thread; |
bea3348e SH |
374 | }; |
375 | ||
d94d9fee | 376 | enum { |
7fd3253a BT |
377 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
378 | NAPI_STATE_MISSED, /* reschedule a napi */ | |
379 | NAPI_STATE_DISABLE, /* Disable pending */ | |
380 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ | |
381 | NAPI_STATE_LISTED, /* NAPI added to system lists */ | |
382 | NAPI_STATE_NO_BUSY_POLL, /* Do not add in napi_hash, no busy polling */ | |
383 | NAPI_STATE_IN_BUSY_POLL, /* sk_busy_loop() owns this NAPI */ | |
384 | NAPI_STATE_PREFER_BUSY_POLL, /* prefer busy-polling over softirq processing*/ | |
29863d41 | 385 | NAPI_STATE_THREADED, /* The poll is performed inside its own thread*/ |
cb038357 | 386 | NAPI_STATE_SCHED_THREADED, /* Napi is currently scheduled in threaded mode */ |
217f6974 ED |
387 | }; |
388 | ||
389 | enum { | |
7fd3253a BT |
390 | NAPIF_STATE_SCHED = BIT(NAPI_STATE_SCHED), |
391 | NAPIF_STATE_MISSED = BIT(NAPI_STATE_MISSED), | |
392 | NAPIF_STATE_DISABLE = BIT(NAPI_STATE_DISABLE), | |
393 | NAPIF_STATE_NPSVC = BIT(NAPI_STATE_NPSVC), | |
394 | NAPIF_STATE_LISTED = BIT(NAPI_STATE_LISTED), | |
395 | NAPIF_STATE_NO_BUSY_POLL = BIT(NAPI_STATE_NO_BUSY_POLL), | |
396 | NAPIF_STATE_IN_BUSY_POLL = BIT(NAPI_STATE_IN_BUSY_POLL), | |
397 | NAPIF_STATE_PREFER_BUSY_POLL = BIT(NAPI_STATE_PREFER_BUSY_POLL), | |
29863d41 | 398 | NAPIF_STATE_THREADED = BIT(NAPI_STATE_THREADED), |
cb038357 | 399 | NAPIF_STATE_SCHED_THREADED = BIT(NAPI_STATE_SCHED_THREADED), |
bea3348e SH |
400 | }; |
401 | ||
5b252f0c | 402 | enum gro_result { |
d1c76af9 HX |
403 | GRO_MERGED, |
404 | GRO_MERGED_FREE, | |
405 | GRO_HELD, | |
406 | GRO_NORMAL, | |
25393d3f | 407 | GRO_CONSUMED, |
d1c76af9 | 408 | }; |
5b252f0c | 409 | typedef enum gro_result gro_result_t; |
d1c76af9 | 410 | |
8a4eb573 JP |
411 | /* |
412 | * enum rx_handler_result - Possible return values for rx_handlers. | |
413 | * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it | |
414 | * further. | |
415 | * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in | |
416 | * case skb->dev was changed by rx_handler. | |
417 | * @RX_HANDLER_EXACT: Force exact delivery, no wildcard. | |
5e82b4b2 | 418 | * @RX_HANDLER_PASS: Do nothing, pass the skb as if no rx_handler was called. |
8a4eb573 JP |
419 | * |
420 | * rx_handlers are functions called from inside __netif_receive_skb(), to do | |
421 | * special processing of the skb, prior to delivery to protocol handlers. | |
422 | * | |
423 | * Currently, a net_device can only have a single rx_handler registered. Trying | |
424 | * to register a second rx_handler will return -EBUSY. | |
425 | * | |
426 | * To register a rx_handler on a net_device, use netdev_rx_handler_register(). | |
427 | * To unregister a rx_handler on a net_device, use | |
428 | * netdev_rx_handler_unregister(). | |
429 | * | |
430 | * Upon return, rx_handler is expected to tell __netif_receive_skb() what to | |
431 | * do with the skb. | |
432 | * | |
5e82b4b2 | 433 | * If the rx_handler consumed the skb in some way, it should return |
8a4eb573 | 434 | * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for |
5e82b4b2 | 435 | * the skb to be delivered in some other way. |
8a4eb573 JP |
436 | * |
437 | * If the rx_handler changed skb->dev, to divert the skb to another | |
438 | * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the | |
439 | * new device will be called if it exists. | |
440 | * | |
5e82b4b2 | 441 | * If the rx_handler decides the skb should be ignored, it should return |
8a4eb573 | 442 | * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that |
d93cf068 | 443 | * are registered on exact device (ptype->dev == skb->dev). |
8a4eb573 | 444 | * |
5e82b4b2 | 445 | * If the rx_handler didn't change skb->dev, but wants the skb to be normally |
8a4eb573 JP |
446 | * delivered, it should return RX_HANDLER_PASS. |
447 | * | |
448 | * A device without a registered rx_handler will behave as if rx_handler | |
449 | * returned RX_HANDLER_PASS. | |
450 | */ | |
451 | ||
452 | enum rx_handler_result { | |
453 | RX_HANDLER_CONSUMED, | |
454 | RX_HANDLER_ANOTHER, | |
455 | RX_HANDLER_EXACT, | |
456 | RX_HANDLER_PASS, | |
457 | }; | |
458 | typedef enum rx_handler_result rx_handler_result_t; | |
459 | typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb); | |
ab95bfe0 | 460 | |
f629d208 | 461 | void __napi_schedule(struct napi_struct *n); |
bc9ad166 | 462 | void __napi_schedule_irqoff(struct napi_struct *n); |
bea3348e | 463 | |
4d29515f | 464 | static inline bool napi_disable_pending(struct napi_struct *n) |
a0a46196 DM |
465 | { |
466 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
467 | } | |
468 | ||
7fd3253a BT |
469 | static inline bool napi_prefer_busy_poll(struct napi_struct *n) |
470 | { | |
471 | return test_bit(NAPI_STATE_PREFER_BUSY_POLL, &n->state); | |
472 | } | |
473 | ||
39e6c820 | 474 | bool napi_schedule_prep(struct napi_struct *n); |
bea3348e SH |
475 | |
476 | /** | |
477 | * napi_schedule - schedule NAPI poll | |
5e82b4b2 | 478 | * @n: NAPI context |
bea3348e SH |
479 | * |
480 | * Schedule NAPI poll routine to be called if it is not already | |
481 | * running. | |
482 | */ | |
483 | static inline void napi_schedule(struct napi_struct *n) | |
484 | { | |
485 | if (napi_schedule_prep(n)) | |
486 | __napi_schedule(n); | |
487 | } | |
488 | ||
bc9ad166 ED |
489 | /** |
490 | * napi_schedule_irqoff - schedule NAPI poll | |
5e82b4b2 | 491 | * @n: NAPI context |
bc9ad166 ED |
492 | * |
493 | * Variant of napi_schedule(), assuming hard irqs are masked. | |
494 | */ | |
495 | static inline void napi_schedule_irqoff(struct napi_struct *n) | |
496 | { | |
497 | if (napi_schedule_prep(n)) | |
498 | __napi_schedule_irqoff(n); | |
499 | } | |
500 | ||
bfe13f54 | 501 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
4d29515f | 502 | static inline bool napi_reschedule(struct napi_struct *napi) |
bfe13f54 RD |
503 | { |
504 | if (napi_schedule_prep(napi)) { | |
505 | __napi_schedule(napi); | |
4d29515f | 506 | return true; |
bfe13f54 | 507 | } |
4d29515f | 508 | return false; |
bfe13f54 RD |
509 | } |
510 | ||
364b6055 | 511 | bool napi_complete_done(struct napi_struct *n, int work_done); |
bea3348e SH |
512 | /** |
513 | * napi_complete - NAPI processing complete | |
5e82b4b2 | 514 | * @n: NAPI context |
bea3348e SH |
515 | * |
516 | * Mark NAPI processing as complete. | |
3b47d303 | 517 | * Consider using napi_complete_done() instead. |
364b6055 | 518 | * Return false if device should avoid rearming interrupts. |
bea3348e | 519 | */ |
364b6055 | 520 | static inline bool napi_complete(struct napi_struct *n) |
3b47d303 ED |
521 | { |
522 | return napi_complete_done(n, 0); | |
523 | } | |
bea3348e | 524 | |
5fdd2f0e WW |
525 | int dev_set_threaded(struct net_device *dev, bool threaded); |
526 | ||
bea3348e SH |
527 | /** |
528 | * napi_disable - prevent NAPI from scheduling | |
5e82b4b2 | 529 | * @n: NAPI context |
bea3348e SH |
530 | * |
531 | * Stop NAPI from being scheduled on this context. | |
532 | * Waits till any outstanding processing completes. | |
533 | */ | |
3b47d303 | 534 | void napi_disable(struct napi_struct *n); |
bea3348e | 535 | |
29863d41 | 536 | void napi_enable(struct napi_struct *n); |
bea3348e | 537 | |
c264c3de SH |
538 | /** |
539 | * napi_synchronize - wait until NAPI is not running | |
5e82b4b2 | 540 | * @n: NAPI context |
c264c3de SH |
541 | * |
542 | * Wait until NAPI is done being scheduled on this context. | |
543 | * Waits till any outstanding processing completes but | |
544 | * does not disable future activations. | |
545 | */ | |
546 | static inline void napi_synchronize(const struct napi_struct *n) | |
547 | { | |
facc432f AB |
548 | if (IS_ENABLED(CONFIG_SMP)) |
549 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
550 | msleep(1); | |
551 | else | |
552 | barrier(); | |
c264c3de | 553 | } |
c264c3de | 554 | |
6c5c9581 MK |
555 | /** |
556 | * napi_if_scheduled_mark_missed - if napi is running, set the | |
557 | * NAPIF_STATE_MISSED | |
558 | * @n: NAPI context | |
559 | * | |
560 | * If napi is running, set the NAPIF_STATE_MISSED, and return true if | |
561 | * NAPI is scheduled. | |
562 | **/ | |
563 | static inline bool napi_if_scheduled_mark_missed(struct napi_struct *n) | |
564 | { | |
565 | unsigned long val, new; | |
566 | ||
b9030780 | 567 | val = READ_ONCE(n->state); |
6c5c9581 | 568 | do { |
6c5c9581 MK |
569 | if (val & NAPIF_STATE_DISABLE) |
570 | return true; | |
571 | ||
572 | if (!(val & NAPIF_STATE_SCHED)) | |
573 | return false; | |
574 | ||
575 | new = val | NAPIF_STATE_MISSED; | |
b9030780 | 576 | } while (!try_cmpxchg(&n->state, &val, new)); |
6c5c9581 MK |
577 | |
578 | return true; | |
579 | } | |
580 | ||
d94d9fee | 581 | enum netdev_queue_state_t { |
73466498 TH |
582 | __QUEUE_STATE_DRV_XOFF, |
583 | __QUEUE_STATE_STACK_XOFF, | |
c3f26a26 | 584 | __QUEUE_STATE_FROZEN, |
79d16385 | 585 | }; |
8e2f1a63 DB |
586 | |
587 | #define QUEUE_STATE_DRV_XOFF (1 << __QUEUE_STATE_DRV_XOFF) | |
588 | #define QUEUE_STATE_STACK_XOFF (1 << __QUEUE_STATE_STACK_XOFF) | |
589 | #define QUEUE_STATE_FROZEN (1 << __QUEUE_STATE_FROZEN) | |
590 | ||
591 | #define QUEUE_STATE_ANY_XOFF (QUEUE_STATE_DRV_XOFF | QUEUE_STATE_STACK_XOFF) | |
592 | #define QUEUE_STATE_ANY_XOFF_OR_FROZEN (QUEUE_STATE_ANY_XOFF | \ | |
593 | QUEUE_STATE_FROZEN) | |
594 | #define QUEUE_STATE_DRV_XOFF_OR_FROZEN (QUEUE_STATE_DRV_XOFF | \ | |
595 | QUEUE_STATE_FROZEN) | |
596 | ||
73466498 TH |
597 | /* |
598 | * __QUEUE_STATE_DRV_XOFF is used by drivers to stop the transmit queue. The | |
599 | * netif_tx_* functions below are used to manipulate this flag. The | |
600 | * __QUEUE_STATE_STACK_XOFF flag is used by the stack to stop the transmit | |
601 | * queue independently. The netif_xmit_*stopped functions below are called | |
602 | * to check if the queue has been stopped by the driver or stack (either | |
603 | * of the XOFF bits are set in the state). Drivers should not need to call | |
604 | * netif_xmit*stopped functions, they should only be using netif_tx_*. | |
605 | */ | |
79d16385 | 606 | |
bb949fbd | 607 | struct netdev_queue { |
6a321cb3 | 608 | /* |
5e82b4b2 | 609 | * read-mostly part |
6a321cb3 | 610 | */ |
bb949fbd | 611 | struct net_device *dev; |
0b688f24 ED |
612 | netdevice_tracker dev_tracker; |
613 | ||
46e5da40 | 614 | struct Qdisc __rcu *qdisc; |
b0e1e646 | 615 | struct Qdisc *qdisc_sleeping; |
ccf5ff69 | 616 | #ifdef CONFIG_SYSFS |
1d24eb48 TH |
617 | struct kobject kobj; |
618 | #endif | |
f2cd2d3e ED |
619 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
620 | int numa_node; | |
621 | #endif | |
c0ef079c FW |
622 | unsigned long tx_maxrate; |
623 | /* | |
624 | * Number of TX timeouts for this queue | |
625 | * (/sys/class/net/DEV/Q/trans_timeout) | |
626 | */ | |
8160fb43 | 627 | atomic_long_t trans_timeout; |
ffcfe25b AD |
628 | |
629 | /* Subordinate device that the queue has been assigned to */ | |
630 | struct net_device *sb_dev; | |
661b8d1b | 631 | #ifdef CONFIG_XDP_SOCKETS |
1742b3d5 | 632 | struct xsk_buff_pool *pool; |
661b8d1b | 633 | #endif |
6a321cb3 | 634 | /* |
5e82b4b2 | 635 | * write-mostly part |
6a321cb3 ED |
636 | */ |
637 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
638 | int xmit_lock_owner; | |
9d21493b | 639 | /* |
9b36627a | 640 | * Time (in jiffies) of last Tx |
9d21493b ED |
641 | */ |
642 | unsigned long trans_start; | |
ccf5ff69 | 643 | |
114cf580 TH |
644 | unsigned long state; |
645 | ||
646 | #ifdef CONFIG_BQL | |
647 | struct dql dql; | |
648 | #endif | |
e8a0464c | 649 | } ____cacheline_aligned_in_smp; |
bb949fbd | 650 | |
79134e6c | 651 | extern int sysctl_fb_tunnels_only_for_init_net; |
856c395c | 652 | extern int sysctl_devconf_inherit_init_net; |
79134e6c | 653 | |
316cdaa1 MB |
654 | /* |
655 | * sysctl_fb_tunnels_only_for_init_net == 0 : For all netns | |
656 | * == 1 : For initns only | |
657 | * == 2 : For none. | |
658 | */ | |
79134e6c ED |
659 | static inline bool net_has_fallback_tunnels(const struct net *net) |
660 | { | |
af67508e KI |
661 | #if IS_ENABLED(CONFIG_SYSCTL) |
662 | int fb_tunnels_only_for_init_net = READ_ONCE(sysctl_fb_tunnels_only_for_init_net); | |
663 | ||
664 | return !fb_tunnels_only_for_init_net || | |
665 | (net_eq(net, &init_net) && fb_tunnels_only_for_init_net == 1); | |
666 | #else | |
667 | return true; | |
668 | #endif | |
79134e6c ED |
669 | } |
670 | ||
a5612ca1 KI |
671 | static inline int net_inherit_devconf(void) |
672 | { | |
673 | #if IS_ENABLED(CONFIG_SYSCTL) | |
674 | return READ_ONCE(sysctl_devconf_inherit_init_net); | |
675 | #else | |
676 | return 0; | |
677 | #endif | |
79134e6c ED |
678 | } |
679 | ||
f2cd2d3e ED |
680 | static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) |
681 | { | |
682 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
683 | return q->numa_node; | |
684 | #else | |
b236da69 | 685 | return NUMA_NO_NODE; |
f2cd2d3e ED |
686 | #endif |
687 | } | |
688 | ||
689 | static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node) | |
690 | { | |
691 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
692 | q->numa_node = node; | |
693 | #endif | |
694 | } | |
695 | ||
df334545 | 696 | #ifdef CONFIG_RPS |
0a9627f2 TH |
697 | /* |
698 | * This structure holds an RPS map which can be of variable length. The | |
699 | * map is an array of CPUs. | |
700 | */ | |
701 | struct rps_map { | |
702 | unsigned int len; | |
703 | struct rcu_head rcu; | |
bb4cf02d | 704 | u16 cpus[]; |
0a9627f2 | 705 | }; |
60b778ce | 706 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + ((_num) * sizeof(u16))) |
0a9627f2 | 707 | |
fec5e652 | 708 | /* |
c445477d BH |
709 | * The rps_dev_flow structure contains the mapping of a flow to a CPU, the |
710 | * tail pointer for that CPU's input queue at the time of last enqueue, and | |
711 | * a hardware filter index. | |
fec5e652 TH |
712 | */ |
713 | struct rps_dev_flow { | |
714 | u16 cpu; | |
c445477d | 715 | u16 filter; |
fec5e652 TH |
716 | unsigned int last_qtail; |
717 | }; | |
c445477d | 718 | #define RPS_NO_FILTER 0xffff |
fec5e652 TH |
719 | |
720 | /* | |
721 | * The rps_dev_flow_table structure contains a table of flow mappings. | |
722 | */ | |
723 | struct rps_dev_flow_table { | |
724 | unsigned int mask; | |
725 | struct rcu_head rcu; | |
bb4cf02d | 726 | struct rps_dev_flow flows[]; |
fec5e652 TH |
727 | }; |
728 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ | |
60b778ce | 729 | ((_num) * sizeof(struct rps_dev_flow))) |
fec5e652 TH |
730 | |
731 | /* | |
732 | * The rps_sock_flow_table contains mappings of flows to the last CPU | |
733 | * on which they were processed by the application (set in recvmsg). | |
5e82b4b2 BH |
734 | * Each entry is a 32bit value. Upper part is the high-order bits |
735 | * of flow hash, lower part is CPU number. | |
567e4b79 | 736 | * rps_cpu_mask is used to partition the space, depending on number of |
5e82b4b2 BH |
737 | * possible CPUs : rps_cpu_mask = roundup_pow_of_two(nr_cpu_ids) - 1 |
738 | * For example, if 64 CPUs are possible, rps_cpu_mask = 0x3f, | |
567e4b79 | 739 | * meaning we use 32-6=26 bits for the hash. |
fec5e652 TH |
740 | */ |
741 | struct rps_sock_flow_table { | |
567e4b79 | 742 | u32 mask; |
93c1af6c | 743 | |
bb4cf02d | 744 | u32 ents[] ____cacheline_aligned_in_smp; |
fec5e652 | 745 | }; |
567e4b79 | 746 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (offsetof(struct rps_sock_flow_table, ents[_num])) |
fec5e652 TH |
747 | |
748 | #define RPS_NO_CPU 0xffff | |
749 | ||
567e4b79 ED |
750 | extern u32 rps_cpu_mask; |
751 | extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; | |
752 | ||
fec5e652 TH |
753 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, |
754 | u32 hash) | |
755 | { | |
756 | if (table && hash) { | |
567e4b79 ED |
757 | unsigned int index = hash & table->mask; |
758 | u32 val = hash & ~rps_cpu_mask; | |
fec5e652 | 759 | |
5e82b4b2 | 760 | /* We only give a hint, preemption can change CPU under us */ |
567e4b79 | 761 | val |= raw_smp_processor_id(); |
fec5e652 | 762 | |
567e4b79 ED |
763 | if (table->ents[index] != val) |
764 | table->ents[index] = val; | |
fec5e652 TH |
765 | } |
766 | } | |
767 | ||
c445477d | 768 | #ifdef CONFIG_RFS_ACCEL |
f629d208 JP |
769 | bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, u32 flow_id, |
770 | u16 filter_id); | |
c445477d | 771 | #endif |
a953be53 | 772 | #endif /* CONFIG_RPS */ |
c445477d | 773 | |
0a9627f2 TH |
774 | /* This structure contains an instance of an RX queue. */ |
775 | struct netdev_rx_queue { | |
95d1d249 | 776 | struct xdp_rxq_info xdp_rxq; |
a953be53 | 777 | #ifdef CONFIG_RPS |
6e3f7faf ED |
778 | struct rps_map __rcu *rps_map; |
779 | struct rps_dev_flow_table __rcu *rps_flow_table; | |
a953be53 | 780 | #endif |
6e3f7faf | 781 | struct kobject kobj; |
fe822240 | 782 | struct net_device *dev; |
80e8921b ED |
783 | netdevice_tracker dev_tracker; |
784 | ||
661b8d1b | 785 | #ifdef CONFIG_XDP_SOCKETS |
1742b3d5 | 786 | struct xsk_buff_pool *pool; |
661b8d1b | 787 | #endif |
0a9627f2 | 788 | } ____cacheline_aligned_in_smp; |
a953be53 MD |
789 | |
790 | /* | |
791 | * RX queue sysfs structures and functions. | |
792 | */ | |
793 | struct rx_queue_attribute { | |
794 | struct attribute attr; | |
718ad681 | 795 | ssize_t (*show)(struct netdev_rx_queue *queue, char *buf); |
a953be53 | 796 | ssize_t (*store)(struct netdev_rx_queue *queue, |
718ad681 | 797 | const char *buf, size_t len); |
a953be53 | 798 | }; |
d314774c | 799 | |
044ab86d AT |
800 | /* XPS map type and offset of the xps map within net_device->xps_maps[]. */ |
801 | enum xps_map_type { | |
802 | XPS_CPUS = 0, | |
803 | XPS_RXQS, | |
804 | XPS_MAPS_MAX, | |
805 | }; | |
806 | ||
bf264145 TH |
807 | #ifdef CONFIG_XPS |
808 | /* | |
809 | * This structure holds an XPS map which can be of variable length. The | |
810 | * map is an array of queues. | |
811 | */ | |
812 | struct xps_map { | |
813 | unsigned int len; | |
814 | unsigned int alloc_len; | |
815 | struct rcu_head rcu; | |
bb4cf02d | 816 | u16 queues[]; |
bf264145 | 817 | }; |
60b778ce | 818 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + ((_num) * sizeof(u16))) |
c59f419b HD |
819 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_ALIGN(offsetof(struct xps_map, queues[1])) \ |
820 | - sizeof(struct xps_map)) / sizeof(u16)) | |
bf264145 TH |
821 | |
822 | /* | |
823 | * This structure holds all XPS maps for device. Maps are indexed by CPU. | |
255c04a8 | 824 | * |
5478fcd0 AT |
825 | * We keep track of the number of cpus/rxqs used when the struct is allocated, |
826 | * in nr_ids. This will help not accessing out-of-bound memory. | |
827 | * | |
255c04a8 AT |
828 | * We keep track of the number of traffic classes used when the struct is |
829 | * allocated, in num_tc. This will be used to navigate the maps, to ensure we're | |
830 | * not crossing its upper bound, as the original dev->num_tc can be updated in | |
831 | * the meantime. | |
bf264145 TH |
832 | */ |
833 | struct xps_dev_maps { | |
834 | struct rcu_head rcu; | |
5478fcd0 | 835 | unsigned int nr_ids; |
255c04a8 | 836 | s16 num_tc; |
bb4cf02d | 837 | struct xps_map __rcu *attr_map[]; /* Either CPUs map or RXQs map */ |
bf264145 | 838 | }; |
80d19669 AN |
839 | |
840 | #define XPS_CPU_DEV_MAPS_SIZE(_tcs) (sizeof(struct xps_dev_maps) + \ | |
184c449f | 841 | (nr_cpu_ids * (_tcs) * sizeof(struct xps_map *))) |
80d19669 AN |
842 | |
843 | #define XPS_RXQ_DEV_MAPS_SIZE(_tcs, _rxqs) (sizeof(struct xps_dev_maps) +\ | |
844 | (_rxqs * (_tcs) * sizeof(struct xps_map *))) | |
845 | ||
bf264145 TH |
846 | #endif /* CONFIG_XPS */ |
847 | ||
4f57c087 JF |
848 | #define TC_MAX_QUEUE 16 |
849 | #define TC_BITMASK 15 | |
850 | /* HW offloaded queuing disciplines txq count and offset maps */ | |
851 | struct netdev_tc_txq { | |
852 | u16 count; | |
853 | u16 offset; | |
854 | }; | |
855 | ||
68bad94e NP |
856 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
857 | /* | |
858 | * This structure is to hold information about the device | |
859 | * configured to run FCoE protocol stack. | |
860 | */ | |
861 | struct netdev_fcoe_hbainfo { | |
862 | char manufacturer[64]; | |
863 | char serial_number[64]; | |
864 | char hardware_version[64]; | |
865 | char driver_version[64]; | |
866 | char optionrom_version[64]; | |
867 | char firmware_version[64]; | |
868 | char model[256]; | |
869 | char model_description[256]; | |
870 | }; | |
871 | #endif | |
872 | ||
02637fce | 873 | #define MAX_PHYS_ITEM_ID_LEN 32 |
66b52b0d | 874 | |
02637fce JP |
875 | /* This structure holds a unique identifier to identify some |
876 | * physical item (port for example) used by a netdevice. | |
66b52b0d | 877 | */ |
02637fce JP |
878 | struct netdev_phys_item_id { |
879 | unsigned char id[MAX_PHYS_ITEM_ID_LEN]; | |
66b52b0d JP |
880 | unsigned char id_len; |
881 | }; | |
882 | ||
d754f98b SF |
883 | static inline bool netdev_phys_item_id_same(struct netdev_phys_item_id *a, |
884 | struct netdev_phys_item_id *b) | |
885 | { | |
886 | return a->id_len == b->id_len && | |
887 | memcmp(a->id, b->id, a->id_len) == 0; | |
888 | } | |
889 | ||
99932d4f | 890 | typedef u16 (*select_queue_fallback_t)(struct net_device *dev, |
8ec56fc3 AD |
891 | struct sk_buff *skb, |
892 | struct net_device *sb_dev); | |
99932d4f | 893 | |
ddb94eaf PNA |
894 | enum net_device_path_type { |
895 | DEV_PATH_ETHERNET = 0, | |
e4417d69 | 896 | DEV_PATH_VLAN, |
ec9d16ba | 897 | DEV_PATH_BRIDGE, |
f6efc675 | 898 | DEV_PATH_PPPOE, |
0994d492 | 899 | DEV_PATH_DSA, |
a333215e | 900 | DEV_PATH_MTK_WDMA, |
ddb94eaf PNA |
901 | }; |
902 | ||
903 | struct net_device_path { | |
904 | enum net_device_path_type type; | |
905 | const struct net_device *dev; | |
e4417d69 PNA |
906 | union { |
907 | struct { | |
908 | u16 id; | |
909 | __be16 proto; | |
f6efc675 | 910 | u8 h_dest[ETH_ALEN]; |
e4417d69 | 911 | } encap; |
bcf2766b FF |
912 | struct { |
913 | enum { | |
914 | DEV_PATH_BR_VLAN_KEEP, | |
915 | DEV_PATH_BR_VLAN_TAG, | |
916 | DEV_PATH_BR_VLAN_UNTAG, | |
26267bf9 | 917 | DEV_PATH_BR_VLAN_UNTAG_HW, |
bcf2766b FF |
918 | } vlan_mode; |
919 | u16 vlan_id; | |
920 | __be16 vlan_proto; | |
921 | } bridge; | |
0994d492 FF |
922 | struct { |
923 | int port; | |
924 | u16 proto; | |
925 | } dsa; | |
a333215e FF |
926 | struct { |
927 | u8 wdma_idx; | |
928 | u8 queue; | |
929 | u16 wcid; | |
930 | u8 bss; | |
931 | } mtk_wdma; | |
e4417d69 | 932 | }; |
ddb94eaf PNA |
933 | }; |
934 | ||
935 | #define NET_DEVICE_PATH_STACK_MAX 5 | |
bcf2766b | 936 | #define NET_DEVICE_PATH_VLAN_MAX 2 |
ddb94eaf PNA |
937 | |
938 | struct net_device_path_stack { | |
939 | int num_paths; | |
940 | struct net_device_path path[NET_DEVICE_PATH_STACK_MAX]; | |
941 | }; | |
942 | ||
943 | struct net_device_path_ctx { | |
944 | const struct net_device *dev; | |
cf2df74e | 945 | u8 daddr[ETH_ALEN]; |
bcf2766b FF |
946 | |
947 | int num_vlans; | |
948 | struct { | |
949 | u16 id; | |
950 | __be16 proto; | |
951 | } vlan[NET_DEVICE_PATH_VLAN_MAX]; | |
ddb94eaf PNA |
952 | }; |
953 | ||
2572ac53 | 954 | enum tc_setup_type { |
aac4daa8 | 955 | TC_QUERY_CAPS, |
575ed7d3 | 956 | TC_SETUP_QDISC_MQPRIO, |
a1b7c5fd | 957 | TC_SETUP_CLSU32, |
5b33f488 | 958 | TC_SETUP_CLSFLOWER, |
ade9b658 | 959 | TC_SETUP_CLSMATCHALL, |
332ae8e2 | 960 | TC_SETUP_CLSBPF, |
8c4083b3 | 961 | TC_SETUP_BLOCK, |
8521db4c | 962 | TC_SETUP_QDISC_CBS, |
602f3baf | 963 | TC_SETUP_QDISC_RED, |
7fdb61b4 | 964 | TC_SETUP_QDISC_PRIO, |
f971b132 | 965 | TC_SETUP_QDISC_MQ, |
25db26a9 | 966 | TC_SETUP_QDISC_ETF, |
98b0e5f6 | 967 | TC_SETUP_ROOT_QDISC, |
890d8d23 | 968 | TC_SETUP_QDISC_GRED, |
9c66d156 | 969 | TC_SETUP_QDISC_TAPRIO, |
c29f74e0 | 970 | TC_SETUP_FT, |
d35eb52b | 971 | TC_SETUP_QDISC_ETS, |
ef6aadcc | 972 | TC_SETUP_QDISC_TBF, |
aaca9408 | 973 | TC_SETUP_QDISC_FIFO, |
d03b195b | 974 | TC_SETUP_QDISC_HTB, |
8cbfe939 | 975 | TC_SETUP_ACT, |
16e5cc64 JF |
976 | }; |
977 | ||
f4e63525 JK |
978 | /* These structures hold the attributes of bpf state that are being passed |
979 | * to the netdevice through the bpf op. | |
a7862b45 | 980 | */ |
f4e63525 | 981 | enum bpf_netdev_command { |
a7862b45 BB |
982 | /* Set or clear a bpf program used in the earliest stages of packet |
983 | * rx. The prog will have been loaded as BPF_PROG_TYPE_XDP. The callee | |
984 | * is responsible for calling bpf_prog_put on any old progs that are | |
985 | * stored. In case of error, the callee need not release the new prog | |
986 | * reference, but on success it takes ownership and must bpf_prog_put | |
987 | * when it is no longer used. | |
988 | */ | |
989 | XDP_SETUP_PROG, | |
ee5d032f | 990 | XDP_SETUP_PROG_HW, |
ab3f0063 | 991 | /* BPF program for offload callbacks, invoked at program load time. */ |
a3884572 JK |
992 | BPF_OFFLOAD_MAP_ALLOC, |
993 | BPF_OFFLOAD_MAP_FREE, | |
1742b3d5 | 994 | XDP_SETUP_XSK_POOL, |
a7862b45 BB |
995 | }; |
996 | ||
cae1927c | 997 | struct bpf_prog_offload_ops; |
ddf9f970 | 998 | struct netlink_ext_ack; |
74515c57 | 999 | struct xdp_umem; |
75ccae62 | 1000 | struct xdp_dev_bulk_queue; |
aa8d3a71 | 1001 | struct bpf_xdp_link; |
ddf9f970 | 1002 | |
7f0a8382 AN |
1003 | enum bpf_xdp_mode { |
1004 | XDP_MODE_SKB = 0, | |
1005 | XDP_MODE_DRV = 1, | |
1006 | XDP_MODE_HW = 2, | |
1007 | __MAX_XDP_MODE | |
1008 | }; | |
1009 | ||
1010 | struct bpf_xdp_entity { | |
1011 | struct bpf_prog *prog; | |
aa8d3a71 | 1012 | struct bpf_xdp_link *link; |
7f0a8382 | 1013 | }; |
ddf9f970 | 1014 | |
f4e63525 JK |
1015 | struct netdev_bpf { |
1016 | enum bpf_netdev_command command; | |
a7862b45 BB |
1017 | union { |
1018 | /* XDP_SETUP_PROG */ | |
ddf9f970 | 1019 | struct { |
32d60277 | 1020 | u32 flags; |
ddf9f970 JK |
1021 | struct bpf_prog *prog; |
1022 | struct netlink_ext_ack *extack; | |
1023 | }; | |
a3884572 JK |
1024 | /* BPF_OFFLOAD_MAP_ALLOC, BPF_OFFLOAD_MAP_FREE */ |
1025 | struct { | |
1026 | struct bpf_offloaded_map *offmap; | |
1027 | }; | |
1742b3d5 | 1028 | /* XDP_SETUP_XSK_POOL */ |
74515c57 | 1029 | struct { |
1742b3d5 | 1030 | struct xsk_buff_pool *pool; |
f8ebfaf6 | 1031 | u16 queue_id; |
74515c57 | 1032 | } xsk; |
a7862b45 BB |
1033 | }; |
1034 | }; | |
16e5cc64 | 1035 | |
9116e5e2 MK |
1036 | /* Flags for ndo_xsk_wakeup. */ |
1037 | #define XDP_WAKEUP_RX (1 << 0) | |
1038 | #define XDP_WAKEUP_TX (1 << 1) | |
1039 | ||
d77e38e6 SK |
1040 | #ifdef CONFIG_XFRM_OFFLOAD |
1041 | struct xfrmdev_ops { | |
7681a4f5 | 1042 | int (*xdo_dev_state_add) (struct xfrm_state *x, struct netlink_ext_ack *extack); |
d77e38e6 SK |
1043 | void (*xdo_dev_state_delete) (struct xfrm_state *x); |
1044 | void (*xdo_dev_state_free) (struct xfrm_state *x); | |
1045 | bool (*xdo_dev_offload_ok) (struct sk_buff *skb, | |
1046 | struct xfrm_state *x); | |
50bd870a | 1047 | void (*xdo_dev_state_advance_esn) (struct xfrm_state *x); |
f3da86dc | 1048 | void (*xdo_dev_state_update_curlft) (struct xfrm_state *x); |
3089386d | 1049 | int (*xdo_dev_policy_add) (struct xfrm_policy *x, struct netlink_ext_ack *extack); |
919e43fa LR |
1050 | void (*xdo_dev_policy_delete) (struct xfrm_policy *x); |
1051 | void (*xdo_dev_policy_free) (struct xfrm_policy *x); | |
d77e38e6 SK |
1052 | }; |
1053 | #endif | |
1054 | ||
6c557001 FW |
1055 | struct dev_ifalias { |
1056 | struct rcu_head rcuhead; | |
1057 | char ifalias[]; | |
1058 | }; | |
1059 | ||
b473b0d2 | 1060 | struct devlink; |
da68b4ad | 1061 | struct tlsdev_ops; |
b473b0d2 | 1062 | |
93642e14 JP |
1063 | struct netdev_net_notifier { |
1064 | struct list_head list; | |
1065 | struct notifier_block *nb; | |
1066 | }; | |
1067 | ||
d314774c SH |
1068 | /* |
1069 | * This structure defines the management hooks for network devices. | |
00829823 SH |
1070 | * The following hooks can be defined; unless noted otherwise, they are |
1071 | * optional and can be filled with a null pointer. | |
d314774c SH |
1072 | * |
1073 | * int (*ndo_init)(struct net_device *dev); | |
5e82b4b2 BH |
1074 | * This function is called once when a network device is registered. |
1075 | * The network device can use this for any late stage initialization | |
1076 | * or semantic validation. It can fail with an error code which will | |
1077 | * be propagated back to register_netdev. | |
d314774c SH |
1078 | * |
1079 | * void (*ndo_uninit)(struct net_device *dev); | |
1080 | * This function is called when device is unregistered or when registration | |
1081 | * fails. It is not called if init fails. | |
1082 | * | |
1083 | * int (*ndo_open)(struct net_device *dev); | |
5e82b4b2 | 1084 | * This function is called when a network device transitions to the up |
d314774c SH |
1085 | * state. |
1086 | * | |
1087 | * int (*ndo_stop)(struct net_device *dev); | |
5e82b4b2 | 1088 | * This function is called when a network device transitions to the down |
d314774c SH |
1089 | * state. |
1090 | * | |
dc1f8bf6 SH |
1091 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
1092 | * struct net_device *dev); | |
00829823 | 1093 | * Called when a packet needs to be transmitted. |
e79d8429 RR |
1094 | * Returns NETDEV_TX_OK. Can return NETDEV_TX_BUSY, but you should stop |
1095 | * the queue before that can happen; it's for obsolete devices and weird | |
1096 | * corner cases, but the stack really does a non-trivial amount | |
1097 | * of useless work if you return NETDEV_TX_BUSY. | |
5e82b4b2 | 1098 | * Required; cannot be NULL. |
00829823 | 1099 | * |
1a2a1444 DM |
1100 | * netdev_features_t (*ndo_features_check)(struct sk_buff *skb, |
1101 | * struct net_device *dev | |
1102 | * netdev_features_t features); | |
1103 | * Called by core transmit path to determine if device is capable of | |
1104 | * performing offload operations on a given packet. This is to give | |
1105 | * the device an opportunity to implement any restrictions that cannot | |
1106 | * be otherwise expressed by feature flags. The check is called with | |
1107 | * the set of features that the stack has calculated and it returns | |
1108 | * those the driver believes to be appropriate. | |
cdba756f | 1109 | * |
f663dd9a | 1110 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb, |
a350ecce | 1111 | * struct net_device *sb_dev); |
5e82b4b2 | 1112 | * Called to decide which queue to use when device supports multiple |
00829823 SH |
1113 | * transmit queues. |
1114 | * | |
d314774c SH |
1115 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
1116 | * This function is called to allow device receiver to make | |
5e82b4b2 | 1117 | * changes to configuration when multicast or promiscuous is enabled. |
d314774c SH |
1118 | * |
1119 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
1120 | * This function is called device changes address list filtering. | |
01789349 | 1121 | * If driver handles unicast address filtering, it should set |
5e82b4b2 | 1122 | * IFF_UNICAST_FLT in its priv_flags. |
d314774c SH |
1123 | * |
1124 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
1125 | * This function is called when the Media Access Control address | |
37b607c5 | 1126 | * needs to be changed. If this interface is not defined, the |
5e82b4b2 | 1127 | * MAC address can not be changed. |
d314774c SH |
1128 | * |
1129 | * int (*ndo_validate_addr)(struct net_device *dev); | |
1130 | * Test if Media Access Control address is valid for the device. | |
1131 | * | |
1132 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
3d9d00bd AB |
1133 | * Old-style ioctl entry point. This is used internally by the |
1134 | * appletalk and ieee802154 subsystems but is no longer called by | |
1135 | * the device ioctl handler. | |
1136 | * | |
1137 | * int (*ndo_siocbond)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
1138 | * Used by the bonding driver for its device specific ioctls: | |
1139 | * SIOCBONDENSLAVE, SIOCBONDRELEASE, SIOCBONDSETHWADDR, SIOCBONDCHANGEACTIVE, | |
1140 | * SIOCBONDSLAVEINFOQUERY, and SIOCBONDINFOQUERY | |
d314774c | 1141 | * |
a7605370 AB |
1142 | * * int (*ndo_eth_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); |
1143 | * Called for ethernet specific ioctls: SIOCGMIIPHY, SIOCGMIIREG, | |
1144 | * SIOCSMIIREG, SIOCSHWTSTAMP and SIOCGHWTSTAMP. | |
1145 | * | |
d314774c SH |
1146 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); |
1147 | * Used to set network devices bus interface parameters. This interface | |
5e82b4b2 | 1148 | * is retained for legacy reasons; new devices should use the bus |
d314774c SH |
1149 | * interface (PCI) for low level management. |
1150 | * | |
1151 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
1152 | * Called when a user wants to change the Maximum Transfer Unit | |
db46a0e1 | 1153 | * of a device. |
d314774c | 1154 | * |
0290bd29 | 1155 | * void (*ndo_tx_timeout)(struct net_device *dev, unsigned int txqueue); |
5e82b4b2 | 1156 | * Callback used when the transmitter has not made any progress |
d314774c SH |
1157 | * for dev->watchdog ticks. |
1158 | * | |
bc1f4470 | 1159 | * void (*ndo_get_stats64)(struct net_device *dev, |
1160 | * struct rtnl_link_stats64 *storage); | |
d308e38f | 1161 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
d314774c | 1162 | * Called when a user wants to get the network device usage |
be1f3c2c | 1163 | * statistics. Drivers must do one of the following: |
3cfde79c BH |
1164 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
1165 | * rtnl_link_stats64 structure passed by the caller. | |
82695d9b | 1166 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
be1f3c2c BH |
1167 | * (which should normally be dev->stats) and return a pointer to |
1168 | * it. The structure may be changed asynchronously only if each | |
1169 | * field is written atomically. | |
1170 | * 3. Update dev->stats asynchronously and atomically, and define | |
1171 | * neither operation. | |
d314774c | 1172 | * |
3df5b3c6 | 1173 | * bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id) |
2c9d85d4 NF |
1174 | * Return true if this device supports offload stats of this attr_id. |
1175 | * | |
1176 | * int (*ndo_get_offload_stats)(int attr_id, const struct net_device *dev, | |
1177 | * void *attr_data) | |
1178 | * Get statistics for offload operations by attr_id. Write it into the | |
1179 | * attr_data pointer. | |
1180 | * | |
5d632cb7 | 1181 | * int (*ndo_vlan_rx_add_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 1182 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 1183 | * VLAN id is registered. |
d314774c | 1184 | * |
5d632cb7 | 1185 | * int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 1186 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 1187 | * VLAN id is unregistered. |
d314774c SH |
1188 | * |
1189 | * void (*ndo_poll_controller)(struct net_device *dev); | |
95c26df8 WM |
1190 | * |
1191 | * SR-IOV management functions. | |
1192 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); | |
79aab093 MS |
1193 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, |
1194 | * u8 qos, __be16 proto); | |
ed616689 SC |
1195 | * int (*ndo_set_vf_rate)(struct net_device *dev, int vf, int min_tx_rate, |
1196 | * int max_tx_rate); | |
5f8444a3 | 1197 | * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting); |
dd461d6a | 1198 | * int (*ndo_set_vf_trust)(struct net_device *dev, int vf, bool setting); |
95c26df8 WM |
1199 | * int (*ndo_get_vf_config)(struct net_device *dev, |
1200 | * int vf, struct ifla_vf_info *ivf); | |
1d8faf48 | 1201 | * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state); |
57b61080 SF |
1202 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
1203 | * struct nlattr *port[]); | |
01a3d796 VZ |
1204 | * |
1205 | * Enable or disable the VF ability to query its RSS Redirection Table and | |
1206 | * Hash Key. This is needed since on some devices VF share this information | |
5e82b4b2 | 1207 | * with PF and querying it may introduce a theoretical security risk. |
01a3d796 | 1208 | * int (*ndo_set_vf_rss_query_en)(struct net_device *dev, int vf, bool setting); |
57b61080 | 1209 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); |
2572ac53 | 1210 | * int (*ndo_setup_tc)(struct net_device *dev, enum tc_setup_type type, |
de4784ca | 1211 | * void *type_data); |
6a4bc2b4 FF |
1212 | * Called to setup any 'tc' scheduler, classifier or action on @dev. |
1213 | * This is always called from the stack with the rtnl lock held and netif | |
1214 | * tx queues stopped. This allows the netdevice to perform queue | |
1215 | * management safely. | |
c445477d | 1216 | * |
e9bce845 YZ |
1217 | * Fiber Channel over Ethernet (FCoE) offload functions. |
1218 | * int (*ndo_fcoe_enable)(struct net_device *dev); | |
1219 | * Called when the FCoE protocol stack wants to start using LLD for FCoE | |
1220 | * so the underlying device can perform whatever needed configuration or | |
1221 | * initialization to support acceleration of FCoE traffic. | |
1222 | * | |
1223 | * int (*ndo_fcoe_disable)(struct net_device *dev); | |
1224 | * Called when the FCoE protocol stack wants to stop using LLD for FCoE | |
1225 | * so the underlying device can perform whatever needed clean-ups to | |
1226 | * stop supporting acceleration of FCoE traffic. | |
1227 | * | |
1228 | * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid, | |
1229 | * struct scatterlist *sgl, unsigned int sgc); | |
1230 | * Called when the FCoE Initiator wants to initialize an I/O that | |
1231 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
1232 | * perform necessary setup and returns 1 to indicate the device is set up | |
1233 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
1234 | * | |
1235 | * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); | |
1236 | * Called when the FCoE Initiator/Target is done with the DDPed I/O as | |
1237 | * indicated by the FC exchange id 'xid', so the underlying device can | |
1238 | * clean up and reuse resources for later DDP requests. | |
1239 | * | |
1240 | * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid, | |
1241 | * struct scatterlist *sgl, unsigned int sgc); | |
1242 | * Called when the FCoE Target wants to initialize an I/O that | |
1243 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
1244 | * perform necessary setup and returns 1 to indicate the device is set up | |
1245 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
1246 | * | |
68bad94e NP |
1247 | * int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1248 | * struct netdev_fcoe_hbainfo *hbainfo); | |
1249 | * Called when the FCoE Protocol stack wants information on the underlying | |
1250 | * device. This information is utilized by the FCoE protocol stack to | |
1251 | * register attributes with Fiber Channel management service as per the | |
1252 | * FC-GS Fabric Device Management Information(FDMI) specification. | |
1253 | * | |
e9bce845 YZ |
1254 | * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); |
1255 | * Called when the underlying device wants to override default World Wide | |
1256 | * Name (WWN) generation mechanism in FCoE protocol stack to pass its own | |
1257 | * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE | |
1258 | * protocol stack to use. | |
1259 | * | |
c445477d BH |
1260 | * RFS acceleration. |
1261 | * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, | |
1262 | * u16 rxq_index, u32 flow_id); | |
1263 | * Set hardware filter for RFS. rxq_index is the target queue index; | |
1264 | * flow_id is a flow ID to be passed to rps_may_expire_flow() later. | |
1265 | * Return the filter ID on success, or a negative error code. | |
fbaec0ea | 1266 | * |
8b98a70c | 1267 | * Slave management functions (for bridge, bonding, etc). |
fbaec0ea JP |
1268 | * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); |
1269 | * Called to make another netdev an underling. | |
1270 | * | |
1271 | * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); | |
1272 | * Called to release previously enslaved netdev. | |
5455c699 | 1273 | * |
cff9f12b MG |
1274 | * struct net_device *(*ndo_get_xmit_slave)(struct net_device *dev, |
1275 | * struct sk_buff *skb, | |
1276 | * bool all_slaves); | |
1277 | * Get the xmit slave of master device. If all_slaves is true, function | |
1278 | * assume all the slaves can transmit. | |
1279 | * | |
5455c699 | 1280 | * Feature/offload setting functions. |
1a2a1444 DM |
1281 | * netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1282 | * netdev_features_t features); | |
1283 | * Adjusts the requested feature flags according to device-specific | |
1284 | * constraints, and returns the resulting flags. Must not modify | |
1285 | * the device state. | |
1286 | * | |
c8f44aff | 1287 | * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); |
5455c699 MM |
1288 | * Called to update device configuration to new features. Passed |
1289 | * feature set might be less than what was returned by ndo_fix_features()). | |
1290 | * Must return >0 or -errno if it changed dev->features itself. | |
1291 | * | |
edc7d573 | 1292 | * int (*ndo_fdb_add)(struct ndmsg *ndm, struct nlattr *tb[], |
1293 | * struct net_device *dev, | |
87b0984e PM |
1294 | * const unsigned char *addr, u16 vid, u16 flags, |
1295 | * struct netlink_ext_ack *extack); | |
77162022 | 1296 | * Adds an FDB entry to dev for addr. |
1690be63 VY |
1297 | * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[], |
1298 | * struct net_device *dev, | |
f6f6424b | 1299 | * const unsigned char *addr, u16 vid) |
77162022 | 1300 | * Deletes the FDB entry from dev coresponding to addr. |
1306d536 NA |
1301 | * int (*ndo_fdb_del_bulk)(struct ndmsg *ndm, struct nlattr *tb[], |
1302 | * struct net_device *dev, | |
1303 | * u16 vid, | |
1304 | * struct netlink_ext_ack *extack); | |
77162022 | 1305 | * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb, |
5d5eacb3 | 1306 | * struct net_device *dev, struct net_device *filter_dev, |
d297653d | 1307 | * int *idx) |
77162022 JF |
1308 | * Used to add FDB entries to dump requests. Implementers should add |
1309 | * entries to skb and update idx with the number of entries. | |
e5a55a89 | 1310 | * |
ad41faa8 | 1311 | * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh, |
2fd527b7 | 1312 | * u16 flags, struct netlink_ext_ack *extack) |
e5a55a89 | 1313 | * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, |
46c264da ND |
1314 | * struct net_device *dev, u32 filter_mask, |
1315 | * int nlflags) | |
ad41faa8 ND |
1316 | * int (*ndo_bridge_dellink)(struct net_device *dev, struct nlmsghdr *nlh, |
1317 | * u16 flags); | |
4bf84c35 JP |
1318 | * |
1319 | * int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier); | |
1320 | * Called to change device carrier. Soft-devices (like dummy, team, etc) | |
1321 | * which do not represent real hardware may define this to allow their | |
1322 | * userspace components to manage their virtual carrier state. Devices | |
1323 | * that determine carrier state from physical hardware properties (eg | |
1324 | * network cables) or protocol-dependent mechanisms (eg | |
1325 | * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function. | |
66b52b0d JP |
1326 | * |
1327 | * int (*ndo_get_phys_port_id)(struct net_device *dev, | |
02637fce | 1328 | * struct netdev_phys_item_id *ppid); |
66b52b0d JP |
1329 | * Called to get ID of physical port of this device. If driver does |
1330 | * not implement this, it is assumed that the hw is not able to have | |
1331 | * multiple net devices on single physical port. | |
53cf5275 | 1332 | * |
d6abc596 FF |
1333 | * int (*ndo_get_port_parent_id)(struct net_device *dev, |
1334 | * struct netdev_phys_item_id *ppid) | |
1335 | * Called to get the parent ID of the physical port of this device. | |
1336 | * | |
a6cc0cfa JF |
1337 | * void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1338 | * struct net_device *dev) | |
1339 | * Called by upper layer devices to accelerate switching or other | |
1340 | * station functionality into hardware. 'pdev is the lowerdev | |
1341 | * to use for the offload and 'dev' is the net device that will | |
1342 | * back the offload. Returns a pointer to the private structure | |
1343 | * the upper layer will maintain. | |
1344 | * void (*ndo_dfwd_del_station)(struct net_device *pdev, void *priv) | |
1345 | * Called by upper layer device to delete the station created | |
1346 | * by 'ndo_dfwd_add_station'. 'pdev' is the net device backing | |
1347 | * the station and priv is the structure returned by the add | |
1348 | * operation. | |
822b3b2e JF |
1349 | * int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1350 | * int queue_index, u32 maxrate); | |
1351 | * Called when a user wants to set a max-rate limitation of specific | |
1352 | * TX queue. | |
a54acb3a ND |
1353 | * int (*ndo_get_iflink)(const struct net_device *dev); |
1354 | * Called to get the iflink value of this device. | |
fc4099f1 PS |
1355 | * int (*ndo_fill_metadata_dst)(struct net_device *dev, struct sk_buff *skb); |
1356 | * This function is used to get egress tunnel information for given skb. | |
1357 | * This is useful for retrieving outer tunnel header parameters while | |
1358 | * sampling packet. | |
871b642a PA |
1359 | * void (*ndo_set_rx_headroom)(struct net_device *dev, int needed_headroom); |
1360 | * This function is used to specify the headroom that the skb must | |
1361 | * consider when allocation skb during packet reception. Setting | |
1362 | * appropriate rx headroom value allows avoiding skb head copy on | |
5e82b4b2 | 1363 | * forward. Setting a negative value resets the rx headroom to the |
871b642a | 1364 | * default value. |
f4e63525 | 1365 | * int (*ndo_bpf)(struct net_device *dev, struct netdev_bpf *bpf); |
a7862b45 | 1366 | * This function is used to set or query state related to XDP on the |
f4e63525 JK |
1367 | * netdevice and manage BPF offload. See definition of |
1368 | * enum bpf_netdev_command for details. | |
42b33468 JDB |
1369 | * int (*ndo_xdp_xmit)(struct net_device *dev, int n, struct xdp_frame **xdp, |
1370 | * u32 flags); | |
735fc405 JDB |
1371 | * This function is used to submit @n XDP packets for transmit on a |
1372 | * netdevice. Returns number of frames successfully transmitted, frames | |
1373 | * that got dropped are freed/returned via xdp_return_frame(). | |
1374 | * Returns negative number, means general error invoking ndo, meaning | |
1375 | * no frames were xmit'ed and core-caller will free all frames. | |
879af96f JM |
1376 | * struct net_device *(*ndo_xdp_get_xmit_slave)(struct net_device *dev, |
1377 | * struct xdp_buff *xdp); | |
1378 | * Get the xmit slave of master device based on the xdp_buff. | |
9116e5e2 MK |
1379 | * int (*ndo_xsk_wakeup)(struct net_device *dev, u32 queue_id, u32 flags); |
1380 | * This function is used to wake up the softirq, ksoftirqd or kthread | |
1381 | * responsible for sending and/or receiving packets on a specific | |
1382 | * queue id bound to an AF_XDP socket. The flags field specifies if | |
1383 | * only RX, only Tx, or both should be woken up using the flags | |
1384 | * XDP_WAKEUP_RX and XDP_WAKEUP_TX. | |
607259a6 CH |
1385 | * int (*ndo_tunnel_ctl)(struct net_device *dev, struct ip_tunnel_parm *p, |
1386 | * int cmd); | |
1387 | * Add, change, delete or get information on an IPv4 tunnel. | |
9aa1206e DB |
1388 | * struct net_device *(*ndo_get_peer_dev)(struct net_device *dev); |
1389 | * If a device is paired with a peer device, return the peer instance. | |
1390 | * The caller must be under RCU read context. | |
ddb94eaf PNA |
1391 | * int (*ndo_fill_forward_path)(struct net_device_path_ctx *ctx, struct net_device_path *path); |
1392 | * Get the forwarding path to reach the real device from the HW destination address | |
97dc7cd9 GE |
1393 | * ktime_t (*ndo_get_tstamp)(struct net_device *dev, |
1394 | * const struct skb_shared_hwtstamps *hwtstamps, | |
1395 | * bool cycles); | |
1396 | * Get hardware timestamp based on normal/adjustable time or free running | |
1397 | * cycle counter. This function is required if physical clock supports a | |
1398 | * free running cycle counter. | |
d314774c SH |
1399 | */ |
1400 | struct net_device_ops { | |
1401 | int (*ndo_init)(struct net_device *dev); | |
1402 | void (*ndo_uninit)(struct net_device *dev); | |
1403 | int (*ndo_open)(struct net_device *dev); | |
1404 | int (*ndo_stop)(struct net_device *dev); | |
cdba756f ED |
1405 | netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
1406 | struct net_device *dev); | |
1407 | netdev_features_t (*ndo_features_check)(struct sk_buff *skb, | |
1408 | struct net_device *dev, | |
1409 | netdev_features_t features); | |
00829823 | 1410 | u16 (*ndo_select_queue)(struct net_device *dev, |
f663dd9a | 1411 | struct sk_buff *skb, |
a350ecce | 1412 | struct net_device *sb_dev); |
d314774c SH |
1413 | void (*ndo_change_rx_flags)(struct net_device *dev, |
1414 | int flags); | |
d314774c | 1415 | void (*ndo_set_rx_mode)(struct net_device *dev); |
d314774c SH |
1416 | int (*ndo_set_mac_address)(struct net_device *dev, |
1417 | void *addr); | |
d314774c | 1418 | int (*ndo_validate_addr)(struct net_device *dev); |
d314774c SH |
1419 | int (*ndo_do_ioctl)(struct net_device *dev, |
1420 | struct ifreq *ifr, int cmd); | |
a7605370 AB |
1421 | int (*ndo_eth_ioctl)(struct net_device *dev, |
1422 | struct ifreq *ifr, int cmd); | |
3d9d00bd AB |
1423 | int (*ndo_siocbond)(struct net_device *dev, |
1424 | struct ifreq *ifr, int cmd); | |
ad7eab2a AB |
1425 | int (*ndo_siocwandev)(struct net_device *dev, |
1426 | struct if_settings *ifs); | |
b9067f5d AB |
1427 | int (*ndo_siocdevprivate)(struct net_device *dev, |
1428 | struct ifreq *ifr, | |
1429 | void __user *data, int cmd); | |
d314774c SH |
1430 | int (*ndo_set_config)(struct net_device *dev, |
1431 | struct ifmap *map); | |
00829823 SH |
1432 | int (*ndo_change_mtu)(struct net_device *dev, |
1433 | int new_mtu); | |
1434 | int (*ndo_neigh_setup)(struct net_device *dev, | |
1435 | struct neigh_parms *); | |
0290bd29 MT |
1436 | void (*ndo_tx_timeout) (struct net_device *dev, |
1437 | unsigned int txqueue); | |
d314774c | 1438 | |
bc1f4470 | 1439 | void (*ndo_get_stats64)(struct net_device *dev, |
1440 | struct rtnl_link_stats64 *storage); | |
3df5b3c6 | 1441 | bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id); |
2c9d85d4 NF |
1442 | int (*ndo_get_offload_stats)(int attr_id, |
1443 | const struct net_device *dev, | |
1444 | void *attr_data); | |
d314774c SH |
1445 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
1446 | ||
8e586137 | 1447 | int (*ndo_vlan_rx_add_vid)(struct net_device *dev, |
80d5c368 | 1448 | __be16 proto, u16 vid); |
8e586137 | 1449 | int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, |
80d5c368 | 1450 | __be16 proto, u16 vid); |
d314774c | 1451 | #ifdef CONFIG_NET_POLL_CONTROLLER |
d314774c | 1452 | void (*ndo_poll_controller)(struct net_device *dev); |
4247e161 | 1453 | int (*ndo_netpoll_setup)(struct net_device *dev, |
a8779ec1 | 1454 | struct netpoll_info *info); |
0e34e931 | 1455 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
d314774c | 1456 | #endif |
95c26df8 WM |
1457 | int (*ndo_set_vf_mac)(struct net_device *dev, |
1458 | int queue, u8 *mac); | |
1459 | int (*ndo_set_vf_vlan)(struct net_device *dev, | |
79aab093 MS |
1460 | int queue, u16 vlan, |
1461 | u8 qos, __be16 proto); | |
ed616689 SC |
1462 | int (*ndo_set_vf_rate)(struct net_device *dev, |
1463 | int vf, int min_tx_rate, | |
1464 | int max_tx_rate); | |
5f8444a3 GR |
1465 | int (*ndo_set_vf_spoofchk)(struct net_device *dev, |
1466 | int vf, bool setting); | |
dd461d6a HS |
1467 | int (*ndo_set_vf_trust)(struct net_device *dev, |
1468 | int vf, bool setting); | |
95c26df8 WM |
1469 | int (*ndo_get_vf_config)(struct net_device *dev, |
1470 | int vf, | |
1471 | struct ifla_vf_info *ivf); | |
1d8faf48 RE |
1472 | int (*ndo_set_vf_link_state)(struct net_device *dev, |
1473 | int vf, int link_state); | |
3b766cd8 EBE |
1474 | int (*ndo_get_vf_stats)(struct net_device *dev, |
1475 | int vf, | |
1476 | struct ifla_vf_stats | |
1477 | *vf_stats); | |
57b61080 SF |
1478 | int (*ndo_set_vf_port)(struct net_device *dev, |
1479 | int vf, | |
1480 | struct nlattr *port[]); | |
1481 | int (*ndo_get_vf_port)(struct net_device *dev, | |
1482 | int vf, struct sk_buff *skb); | |
30aad417 DG |
1483 | int (*ndo_get_vf_guid)(struct net_device *dev, |
1484 | int vf, | |
1485 | struct ifla_vf_guid *node_guid, | |
1486 | struct ifla_vf_guid *port_guid); | |
cc8e27cc EC |
1487 | int (*ndo_set_vf_guid)(struct net_device *dev, |
1488 | int vf, u64 guid, | |
1489 | int guid_type); | |
01a3d796 VZ |
1490 | int (*ndo_set_vf_rss_query_en)( |
1491 | struct net_device *dev, | |
1492 | int vf, bool setting); | |
16e5cc64 | 1493 | int (*ndo_setup_tc)(struct net_device *dev, |
2572ac53 | 1494 | enum tc_setup_type type, |
de4784ca | 1495 | void *type_data); |
d11ead75 | 1496 | #if IS_ENABLED(CONFIG_FCOE) |
cb454399 YZ |
1497 | int (*ndo_fcoe_enable)(struct net_device *dev); |
1498 | int (*ndo_fcoe_disable)(struct net_device *dev); | |
4d288d57 YZ |
1499 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
1500 | u16 xid, | |
1501 | struct scatterlist *sgl, | |
1502 | unsigned int sgc); | |
1503 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
1504 | u16 xid); | |
6247e086 YZ |
1505 | int (*ndo_fcoe_ddp_target)(struct net_device *dev, |
1506 | u16 xid, | |
1507 | struct scatterlist *sgl, | |
1508 | unsigned int sgc); | |
68bad94e NP |
1509 | int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1510 | struct netdev_fcoe_hbainfo *hbainfo); | |
3c9c36bc BPG |
1511 | #endif |
1512 | ||
d11ead75 | 1513 | #if IS_ENABLED(CONFIG_LIBFCOE) |
df5c7945 YZ |
1514 | #define NETDEV_FCOE_WWNN 0 |
1515 | #define NETDEV_FCOE_WWPN 1 | |
1516 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, | |
1517 | u64 *wwn, int type); | |
4d288d57 | 1518 | #endif |
3c9c36bc | 1519 | |
c445477d BH |
1520 | #ifdef CONFIG_RFS_ACCEL |
1521 | int (*ndo_rx_flow_steer)(struct net_device *dev, | |
1522 | const struct sk_buff *skb, | |
1523 | u16 rxq_index, | |
1524 | u32 flow_id); | |
1525 | #endif | |
fbaec0ea | 1526 | int (*ndo_add_slave)(struct net_device *dev, |
33eaf2a6 DA |
1527 | struct net_device *slave_dev, |
1528 | struct netlink_ext_ack *extack); | |
fbaec0ea JP |
1529 | int (*ndo_del_slave)(struct net_device *dev, |
1530 | struct net_device *slave_dev); | |
cff9f12b MG |
1531 | struct net_device* (*ndo_get_xmit_slave)(struct net_device *dev, |
1532 | struct sk_buff *skb, | |
1533 | bool all_slaves); | |
719a402c TT |
1534 | struct net_device* (*ndo_sk_get_lower_dev)(struct net_device *dev, |
1535 | struct sock *sk); | |
c8f44aff MM |
1536 | netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1537 | netdev_features_t features); | |
5455c699 | 1538 | int (*ndo_set_features)(struct net_device *dev, |
c8f44aff | 1539 | netdev_features_t features); |
503eebc2 JP |
1540 | int (*ndo_neigh_construct)(struct net_device *dev, |
1541 | struct neighbour *n); | |
1542 | void (*ndo_neigh_destroy)(struct net_device *dev, | |
1543 | struct neighbour *n); | |
77162022 JF |
1544 | |
1545 | int (*ndo_fdb_add)(struct ndmsg *ndm, | |
edc7d573 | 1546 | struct nlattr *tb[], |
77162022 | 1547 | struct net_device *dev, |
6b6e2725 | 1548 | const unsigned char *addr, |
f6f6424b | 1549 | u16 vid, |
87b0984e PM |
1550 | u16 flags, |
1551 | struct netlink_ext_ack *extack); | |
77162022 | 1552 | int (*ndo_fdb_del)(struct ndmsg *ndm, |
1690be63 | 1553 | struct nlattr *tb[], |
77162022 | 1554 | struct net_device *dev, |
f6f6424b | 1555 | const unsigned char *addr, |
ca4567f1 | 1556 | u16 vid, struct netlink_ext_ack *extack); |
1306d536 NA |
1557 | int (*ndo_fdb_del_bulk)(struct ndmsg *ndm, |
1558 | struct nlattr *tb[], | |
1559 | struct net_device *dev, | |
1560 | u16 vid, | |
1561 | struct netlink_ext_ack *extack); | |
77162022 JF |
1562 | int (*ndo_fdb_dump)(struct sk_buff *skb, |
1563 | struct netlink_callback *cb, | |
1564 | struct net_device *dev, | |
5d5eacb3 | 1565 | struct net_device *filter_dev, |
d297653d | 1566 | int *idx); |
5b2f94b2 RP |
1567 | int (*ndo_fdb_get)(struct sk_buff *skb, |
1568 | struct nlattr *tb[], | |
1569 | struct net_device *dev, | |
1570 | const unsigned char *addr, | |
1571 | u16 vid, u32 portid, u32 seq, | |
1572 | struct netlink_ext_ack *extack); | |
e5a55a89 | 1573 | int (*ndo_bridge_setlink)(struct net_device *dev, |
add511b3 | 1574 | struct nlmsghdr *nlh, |
2fd527b7 PM |
1575 | u16 flags, |
1576 | struct netlink_ext_ack *extack); | |
e5a55a89 JF |
1577 | int (*ndo_bridge_getlink)(struct sk_buff *skb, |
1578 | u32 pid, u32 seq, | |
6cbdceeb | 1579 | struct net_device *dev, |
46c264da ND |
1580 | u32 filter_mask, |
1581 | int nlflags); | |
407af329 | 1582 | int (*ndo_bridge_dellink)(struct net_device *dev, |
add511b3 RP |
1583 | struct nlmsghdr *nlh, |
1584 | u16 flags); | |
4bf84c35 JP |
1585 | int (*ndo_change_carrier)(struct net_device *dev, |
1586 | bool new_carrier); | |
66b52b0d | 1587 | int (*ndo_get_phys_port_id)(struct net_device *dev, |
02637fce | 1588 | struct netdev_phys_item_id *ppid); |
d6abc596 FF |
1589 | int (*ndo_get_port_parent_id)(struct net_device *dev, |
1590 | struct netdev_phys_item_id *ppid); | |
db24a904 DA |
1591 | int (*ndo_get_phys_port_name)(struct net_device *dev, |
1592 | char *name, size_t len); | |
a6cc0cfa JF |
1593 | void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1594 | struct net_device *dev); | |
1595 | void (*ndo_dfwd_del_station)(struct net_device *pdev, | |
1596 | void *priv); | |
1597 | ||
822b3b2e JF |
1598 | int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1599 | int queue_index, | |
1600 | u32 maxrate); | |
a54acb3a | 1601 | int (*ndo_get_iflink)(const struct net_device *dev); |
fc4099f1 PS |
1602 | int (*ndo_fill_metadata_dst)(struct net_device *dev, |
1603 | struct sk_buff *skb); | |
871b642a PA |
1604 | void (*ndo_set_rx_headroom)(struct net_device *dev, |
1605 | int needed_headroom); | |
f4e63525 JK |
1606 | int (*ndo_bpf)(struct net_device *dev, |
1607 | struct netdev_bpf *bpf); | |
735fc405 | 1608 | int (*ndo_xdp_xmit)(struct net_device *dev, int n, |
42b33468 JDB |
1609 | struct xdp_frame **xdp, |
1610 | u32 flags); | |
879af96f JM |
1611 | struct net_device * (*ndo_xdp_get_xmit_slave)(struct net_device *dev, |
1612 | struct xdp_buff *xdp); | |
9116e5e2 MK |
1613 | int (*ndo_xsk_wakeup)(struct net_device *dev, |
1614 | u32 queue_id, u32 flags); | |
607259a6 CH |
1615 | int (*ndo_tunnel_ctl)(struct net_device *dev, |
1616 | struct ip_tunnel_parm *p, int cmd); | |
9aa1206e | 1617 | struct net_device * (*ndo_get_peer_dev)(struct net_device *dev); |
ddb94eaf PNA |
1618 | int (*ndo_fill_forward_path)(struct net_device_path_ctx *ctx, |
1619 | struct net_device_path *path); | |
97dc7cd9 GE |
1620 | ktime_t (*ndo_get_tstamp)(struct net_device *dev, |
1621 | const struct skb_shared_hwtstamps *hwtstamps, | |
1622 | bool cycles); | |
d314774c SH |
1623 | }; |
1624 | ||
3d76a4d3 SF |
1625 | struct xdp_metadata_ops { |
1626 | int (*xmo_rx_timestamp)(const struct xdp_md *ctx, u64 *timestamp); | |
0cd917a4 JDB |
1627 | int (*xmo_rx_hash)(const struct xdp_md *ctx, u32 *hash, |
1628 | enum xdp_rss_hash_type *rss_type); | |
3d76a4d3 SF |
1629 | }; |
1630 | ||
7aa98047 | 1631 | /** |
270f3385 | 1632 | * enum netdev_priv_flags - &struct net_device priv_flags |
7aa98047 LR |
1633 | * |
1634 | * These are the &struct net_device, they are only set internally | |
1635 | * by drivers and used in the kernel. These flags are invisible to | |
5e82b4b2 | 1636 | * userspace; this means that the order of these flags can change |
7aa98047 LR |
1637 | * during any kernel release. |
1638 | * | |
1639 | * You should have a pretty good reason to be extending these flags. | |
1640 | * | |
1641 | * @IFF_802_1Q_VLAN: 802.1Q VLAN device | |
1642 | * @IFF_EBRIDGE: Ethernet bridging device | |
7aa98047 | 1643 | * @IFF_BONDING: bonding master or slave |
7aa98047 | 1644 | * @IFF_ISATAP: ISATAP interface (RFC4214) |
7aa98047 LR |
1645 | * @IFF_WAN_HDLC: WAN HDLC device |
1646 | * @IFF_XMIT_DST_RELEASE: dev_hard_start_xmit() is allowed to | |
1647 | * release skb->dst | |
1648 | * @IFF_DONT_BRIDGE: disallow bridging this ether dev | |
1649 | * @IFF_DISABLE_NETPOLL: disable netpoll at run-time | |
1650 | * @IFF_MACVLAN_PORT: device used as macvlan port | |
1651 | * @IFF_BRIDGE_PORT: device used as bridge port | |
1652 | * @IFF_OVS_DATAPATH: device used as Open vSwitch datapath port | |
1653 | * @IFF_TX_SKB_SHARING: The interface supports sharing skbs on transmit | |
1654 | * @IFF_UNICAST_FLT: Supports unicast filtering | |
1655 | * @IFF_TEAM_PORT: device used as team port | |
1656 | * @IFF_SUPP_NOFCS: device supports sending custom FCS | |
1657 | * @IFF_LIVE_ADDR_CHANGE: device supports hardware address | |
1658 | * change when it's running | |
1659 | * @IFF_MACVLAN: Macvlan device | |
6d0e24cd LB |
1660 | * @IFF_XMIT_DST_RELEASE_PERM: IFF_XMIT_DST_RELEASE not taking into account |
1661 | * underlying stacked devices | |
007979ea | 1662 | * @IFF_L3MDEV_MASTER: device is an L3 master device |
fa8187c9 | 1663 | * @IFF_NO_QUEUE: device can run without qdisc attached |
35d4e172 | 1664 | * @IFF_OPENVSWITCH: device is a Open vSwitch master |
fee6d4c7 | 1665 | * @IFF_L3MDEV_SLAVE: device is enslaved to an L3 master device |
c981e421 | 1666 | * @IFF_TEAM: device is a team device |
d4ab4286 | 1667 | * @IFF_RXFH_CONFIGURED: device has had Rx Flow indirection table configured |
871b642a PA |
1668 | * @IFF_PHONY_HEADROOM: the headroom value is controlled by an external |
1669 | * entity (i.e. the master device for bridged veth) | |
3c175784 | 1670 | * @IFF_MACSEC: device is a MACsec device |
f5426250 | 1671 | * @IFF_NO_RX_HANDLER: device doesn't support the rx_handler hook |
30c8bd5a SS |
1672 | * @IFF_FAILOVER: device is a failover master device |
1673 | * @IFF_FAILOVER_SLAVE: device is lower dev of a failover master device | |
d5256083 | 1674 | * @IFF_L3MDEV_RX_HANDLER: only invoke the rx handler of L3 master device |
8a321cf7 | 1675 | * @IFF_NO_ADDRCONF: prevent ipv6 addrconf |
c2ff53d8 XZ |
1676 | * @IFF_TX_SKB_NO_LINEAR: device/driver is capable of xmitting frames with |
1677 | * skb_headlen(skb) == 0 (data starts from frag0) | |
2106efda | 1678 | * @IFF_CHANGE_PROTO_DOWN: device supports setting carrier via IFLA_PROTO_DOWN |
7aa98047 LR |
1679 | */ |
1680 | enum netdev_priv_flags { | |
1681 | IFF_802_1Q_VLAN = 1<<0, | |
1682 | IFF_EBRIDGE = 1<<1, | |
0dc1549b JP |
1683 | IFF_BONDING = 1<<2, |
1684 | IFF_ISATAP = 1<<3, | |
1685 | IFF_WAN_HDLC = 1<<4, | |
1686 | IFF_XMIT_DST_RELEASE = 1<<5, | |
1687 | IFF_DONT_BRIDGE = 1<<6, | |
1688 | IFF_DISABLE_NETPOLL = 1<<7, | |
1689 | IFF_MACVLAN_PORT = 1<<8, | |
1690 | IFF_BRIDGE_PORT = 1<<9, | |
1691 | IFF_OVS_DATAPATH = 1<<10, | |
1692 | IFF_TX_SKB_SHARING = 1<<11, | |
1693 | IFF_UNICAST_FLT = 1<<12, | |
1694 | IFF_TEAM_PORT = 1<<13, | |
1695 | IFF_SUPP_NOFCS = 1<<14, | |
1696 | IFF_LIVE_ADDR_CHANGE = 1<<15, | |
1697 | IFF_MACVLAN = 1<<16, | |
1698 | IFF_XMIT_DST_RELEASE_PERM = 1<<17, | |
1ec54cb4 PA |
1699 | IFF_L3MDEV_MASTER = 1<<18, |
1700 | IFF_NO_QUEUE = 1<<19, | |
1701 | IFF_OPENVSWITCH = 1<<20, | |
1702 | IFF_L3MDEV_SLAVE = 1<<21, | |
1703 | IFF_TEAM = 1<<22, | |
1704 | IFF_RXFH_CONFIGURED = 1<<23, | |
1705 | IFF_PHONY_HEADROOM = 1<<24, | |
1706 | IFF_MACSEC = 1<<25, | |
f5426250 | 1707 | IFF_NO_RX_HANDLER = 1<<26, |
30c8bd5a SS |
1708 | IFF_FAILOVER = 1<<27, |
1709 | IFF_FAILOVER_SLAVE = 1<<28, | |
d5256083 | 1710 | IFF_L3MDEV_RX_HANDLER = 1<<29, |
8a321cf7 | 1711 | IFF_NO_ADDRCONF = BIT_ULL(30), |
3b89b511 | 1712 | IFF_TX_SKB_NO_LINEAR = BIT_ULL(31), |
2106efda | 1713 | IFF_CHANGE_PROTO_DOWN = BIT_ULL(32), |
7aa98047 LR |
1714 | }; |
1715 | ||
1716 | #define IFF_802_1Q_VLAN IFF_802_1Q_VLAN | |
1717 | #define IFF_EBRIDGE IFF_EBRIDGE | |
7aa98047 | 1718 | #define IFF_BONDING IFF_BONDING |
7aa98047 | 1719 | #define IFF_ISATAP IFF_ISATAP |
7aa98047 LR |
1720 | #define IFF_WAN_HDLC IFF_WAN_HDLC |
1721 | #define IFF_XMIT_DST_RELEASE IFF_XMIT_DST_RELEASE | |
1722 | #define IFF_DONT_BRIDGE IFF_DONT_BRIDGE | |
1723 | #define IFF_DISABLE_NETPOLL IFF_DISABLE_NETPOLL | |
1724 | #define IFF_MACVLAN_PORT IFF_MACVLAN_PORT | |
1725 | #define IFF_BRIDGE_PORT IFF_BRIDGE_PORT | |
1726 | #define IFF_OVS_DATAPATH IFF_OVS_DATAPATH | |
1727 | #define IFF_TX_SKB_SHARING IFF_TX_SKB_SHARING | |
1728 | #define IFF_UNICAST_FLT IFF_UNICAST_FLT | |
1729 | #define IFF_TEAM_PORT IFF_TEAM_PORT | |
1730 | #define IFF_SUPP_NOFCS IFF_SUPP_NOFCS | |
1731 | #define IFF_LIVE_ADDR_CHANGE IFF_LIVE_ADDR_CHANGE | |
1732 | #define IFF_MACVLAN IFF_MACVLAN | |
02875878 | 1733 | #define IFF_XMIT_DST_RELEASE_PERM IFF_XMIT_DST_RELEASE_PERM |
007979ea | 1734 | #define IFF_L3MDEV_MASTER IFF_L3MDEV_MASTER |
fa8187c9 | 1735 | #define IFF_NO_QUEUE IFF_NO_QUEUE |
35d4e172 | 1736 | #define IFF_OPENVSWITCH IFF_OPENVSWITCH |
8f25348b | 1737 | #define IFF_L3MDEV_SLAVE IFF_L3MDEV_SLAVE |
c981e421 | 1738 | #define IFF_TEAM IFF_TEAM |
d4ab4286 | 1739 | #define IFF_RXFH_CONFIGURED IFF_RXFH_CONFIGURED |
2463e073 | 1740 | #define IFF_PHONY_HEADROOM IFF_PHONY_HEADROOM |
3c175784 | 1741 | #define IFF_MACSEC IFF_MACSEC |
f5426250 | 1742 | #define IFF_NO_RX_HANDLER IFF_NO_RX_HANDLER |
30c8bd5a SS |
1743 | #define IFF_FAILOVER IFF_FAILOVER |
1744 | #define IFF_FAILOVER_SLAVE IFF_FAILOVER_SLAVE | |
d5256083 | 1745 | #define IFF_L3MDEV_RX_HANDLER IFF_L3MDEV_RX_HANDLER |
c2ff53d8 | 1746 | #define IFF_TX_SKB_NO_LINEAR IFF_TX_SKB_NO_LINEAR |
7aa98047 | 1747 | |
4e096a18 OR |
1748 | /* Specifies the type of the struct net_device::ml_priv pointer */ |
1749 | enum netdev_ml_priv_type { | |
1750 | ML_PRIV_NONE, | |
1751 | ML_PRIV_CAN, | |
1752 | }; | |
1753 | ||
536721b1 KK |
1754 | /** |
1755 | * struct net_device - The DEVICE structure. | |
d651983d MCC |
1756 | * |
1757 | * Actually, this whole structure is a big mistake. It mixes I/O | |
1758 | * data with strictly "high-level" data, and it has to know about | |
1759 | * almost every data structure used in the INET module. | |
536721b1 KK |
1760 | * |
1761 | * @name: This is the first field of the "visible" part of this structure | |
1762 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
d651983d | 1763 | * of the interface. |
536721b1 | 1764 | * |
ff927412 | 1765 | * @name_node: Name hashlist node |
536721b1 KK |
1766 | * @ifalias: SNMP alias |
1767 | * @mem_end: Shared memory end | |
1768 | * @mem_start: Shared memory start | |
1769 | * @base_addr: Device I/O address | |
1770 | * @irq: Device IRQ number | |
1771 | * | |
1772 | * @state: Generic network queuing layer state, see netdev_state_t | |
1773 | * @dev_list: The global list of network devices | |
5e82b4b2 BH |
1774 | * @napi_list: List entry used for polling NAPI devices |
1775 | * @unreg_list: List entry when we are unregistering the | |
1776 | * device; see the function unregister_netdev | |
1777 | * @close_list: List entry used when we are closing the device | |
62d885fe BP |
1778 | * @ptype_all: Device-specific packet handlers for all protocols |
1779 | * @ptype_specific: Device-specific, protocol-specific packet handlers | |
536721b1 KK |
1780 | * |
1781 | * @adj_list: Directly linked devices, like slaves for bonding | |
536721b1 KK |
1782 | * @features: Currently active device features |
1783 | * @hw_features: User-changeable features | |
1784 | * | |
1785 | * @wanted_features: User-requested features | |
1786 | * @vlan_features: Mask of features inheritable by VLAN devices | |
1787 | * | |
1788 | * @hw_enc_features: Mask of features inherited by encapsulating devices | |
1789 | * This field indicates what encapsulation | |
1790 | * offloads the hardware is capable of doing, | |
1791 | * and drivers will need to set them appropriately. | |
1792 | * | |
1793 | * @mpls_features: Mask of features inheritable by MPLS | |
a1fa83bd | 1794 | * @gso_partial_features: value(s) from NETIF_F_GSO\* |
536721b1 KK |
1795 | * |
1796 | * @ifindex: interface index | |
5e82b4b2 | 1797 | * @group: The group the device belongs to |
536721b1 KK |
1798 | * |
1799 | * @stats: Statistics struct, which was left as a legacy, use | |
1800 | * rtnl_link_stats64 instead | |
1801 | * | |
625788b5 | 1802 | * @core_stats: core networking counters, |
536721b1 | 1803 | * do not use this in drivers |
9e55e5d3 FF |
1804 | * @carrier_up_count: Number of times the carrier has been up |
1805 | * @carrier_down_count: Number of times the carrier has been down | |
536721b1 | 1806 | * |
536721b1 KK |
1807 | * @wireless_handlers: List of functions to handle Wireless Extensions, |
1808 | * instead of ioctl, | |
1809 | * see <net/iw_handler.h> for details. | |
1810 | * @wireless_data: Instance data managed by the core of wireless extensions | |
1811 | * | |
1812 | * @netdev_ops: Includes several pointers to callbacks, | |
1813 | * if one wants to override the ndo_*() functions | |
3d76a4d3 | 1814 | * @xdp_metadata_ops: Includes pointers to XDP metadata callbacks. |
536721b1 | 1815 | * @ethtool_ops: Management operations |
a1fa83bd | 1816 | * @l3mdev_ops: Layer 3 master device operations |
f997c55c AA |
1817 | * @ndisc_ops: Includes callbacks for different IPv6 neighbour |
1818 | * discovery handling. Necessary for e.g. 6LoWPAN. | |
a1fa83bd RD |
1819 | * @xfrmdev_ops: Transformation offload operations |
1820 | * @tlsdev_ops: Transport Layer Security offload operations | |
d476059e | 1821 | * @header_ops: Includes callbacks for creating,parsing,caching,etc |
536721b1 KK |
1822 | * of Layer 2 headers. |
1823 | * | |
1824 | * @flags: Interface flags (a la BSD) | |
26759bee | 1825 | * @xdp_features: XDP capability supported by the device |
536721b1 KK |
1826 | * @priv_flags: Like 'flags' but invisible to userspace, |
1827 | * see if.h for the definitions | |
1828 | * @gflags: Global flags ( kept as legacy ) | |
1829 | * @padded: How much padding added by alloc_netdev() | |
1830 | * @operstate: RFC2863 operstate | |
1831 | * @link_mode: Mapping policy to operstate | |
1832 | * @if_port: Selectable AUI, TP, ... | |
1833 | * @dma: DMA channel | |
1834 | * @mtu: Interface MTU value | |
61e84623 JW |
1835 | * @min_mtu: Interface Minimum MTU value |
1836 | * @max_mtu: Interface Maximum MTU value | |
536721b1 | 1837 | * @type: Interface hardware type |
2793a23a | 1838 | * @hard_header_len: Maximum hardware header length. |
217e6fa2 | 1839 | * @min_header_len: Minimum hardware header length |
536721b1 KK |
1840 | * |
1841 | * @needed_headroom: Extra headroom the hardware may need, but not in all | |
1842 | * cases can this be guaranteed | |
1843 | * @needed_tailroom: Extra tailroom the hardware may need, but not in all | |
1844 | * cases can this be guaranteed. Some cases also use | |
1845 | * LL_MAX_HEADER instead to allocate the skb | |
1846 | * | |
1847 | * interface address info: | |
1848 | * | |
1849 | * @perm_addr: Permanent hw address | |
1850 | * @addr_assign_type: Hw address assignment type | |
1851 | * @addr_len: Hardware address length | |
5343da4c TY |
1852 | * @upper_level: Maximum depth level of upper devices. |
1853 | * @lower_level: Maximum depth level of lower devices. | |
8626a0c8 | 1854 | * @neigh_priv_len: Used in neigh_alloc() |
536721b1 KK |
1855 | * @dev_id: Used to differentiate devices that share |
1856 | * the same link layer address | |
1857 | * @dev_port: Used to differentiate devices that share | |
1858 | * the same function | |
1859 | * @addr_list_lock: XXX: need comments on this one | |
a1fa83bd | 1860 | * @name_assign_type: network interface name assignment type |
5e82b4b2 | 1861 | * @uc_promisc: Counter that indicates promiscuous mode |
536721b1 KK |
1862 | * has been enabled due to the need to listen to |
1863 | * additional unicast addresses in a device that | |
1864 | * does not implement ndo_set_rx_mode() | |
14ffbbb8 TG |
1865 | * @uc: unicast mac addresses |
1866 | * @mc: multicast mac addresses | |
1867 | * @dev_addrs: list of device hw addresses | |
1868 | * @queues_kset: Group of all Kobjects in the Tx and RX queues | |
5e82b4b2 BH |
1869 | * @promiscuity: Number of times the NIC is told to work in |
1870 | * promiscuous mode; if it becomes 0 the NIC will | |
1871 | * exit promiscuous mode | |
536721b1 KK |
1872 | * @allmulti: Counter, enables or disables allmulticast mode |
1873 | * | |
1874 | * @vlan_info: VLAN info | |
1875 | * @dsa_ptr: dsa specific data | |
1876 | * @tipc_ptr: TIPC specific data | |
1877 | * @atalk_ptr: AppleTalk link | |
1878 | * @ip_ptr: IPv4 specific data | |
536721b1 KK |
1879 | * @ip6_ptr: IPv6 specific data |
1880 | * @ax25_ptr: AX.25 specific data | |
1881 | * @ieee80211_ptr: IEEE 802.11 specific data, assign before registering | |
a1fa83bd RD |
1882 | * @ieee802154_ptr: IEEE 802.15.4 low-rate Wireless Personal Area Network |
1883 | * device struct | |
1884 | * @mpls_ptr: mpls_dev struct pointer | |
583be982 | 1885 | * @mctp_ptr: MCTP specific data |
536721b1 | 1886 | * |
536721b1 KK |
1887 | * @dev_addr: Hw address (before bcast, |
1888 | * because most packets are unicast) | |
1889 | * | |
1890 | * @_rx: Array of RX queues | |
1891 | * @num_rx_queues: Number of RX queues | |
1892 | * allocated at register_netdev() time | |
1893 | * @real_num_rx_queues: Number of RX queues currently active in device | |
a1fa83bd RD |
1894 | * @xdp_prog: XDP sockets filter program pointer |
1895 | * @gro_flush_timeout: timeout for GRO layer in NAPI | |
5c45a918 MCC |
1896 | * @napi_defer_hard_irqs: If not zero, provides a counter that would |
1897 | * allow to avoid NIC hard IRQ, on busy queues. | |
536721b1 KK |
1898 | * |
1899 | * @rx_handler: handler for received packets | |
1900 | * @rx_handler_data: XXX: need comments on this one | |
46209401 JP |
1901 | * @miniq_ingress: ingress/clsact qdisc specific data for |
1902 | * ingress processing | |
536721b1 | 1903 | * @ingress_queue: XXX: need comments on this one |
2f5e70c8 | 1904 | * @nf_hooks_ingress: netfilter hooks executed for ingress packets |
536721b1 KK |
1905 | * @broadcast: hw bcast address |
1906 | * | |
14ffbbb8 TG |
1907 | * @rx_cpu_rmap: CPU reverse-mapping for RX completion interrupts, |
1908 | * indexed by RX queue number. Assigned by driver. | |
1909 | * This must only be set if the ndo_rx_flow_steer | |
1910 | * operation is defined | |
1911 | * @index_hlist: Device index hash chain | |
1912 | * | |
536721b1 KK |
1913 | * @_tx: Array of TX queues |
1914 | * @num_tx_queues: Number of TX queues allocated at alloc_netdev_mq() time | |
1915 | * @real_num_tx_queues: Number of TX queues currently active in device | |
1916 | * @qdisc: Root qdisc from userspace point of view | |
1917 | * @tx_queue_len: Max frames per queue allowed | |
1918 | * @tx_global_lock: XXX: need comments on this one | |
a1fa83bd | 1919 | * @xdp_bulkq: XDP device bulk queue |
044ab86d | 1920 | * @xps_maps: all CPUs/RXQs maps for XPS device |
536721b1 KK |
1921 | * |
1922 | * @xps_maps: XXX: need comments on this one | |
46209401 JP |
1923 | * @miniq_egress: clsact qdisc specific data for |
1924 | * egress processing | |
42df6e1d | 1925 | * @nf_hooks_egress: netfilter hooks executed for egress packets |
a1fa83bd | 1926 | * @qdisc_hash: qdisc hash table |
536721b1 | 1927 | * @watchdog_timeo: Represents the timeout that is used by |
5e82b4b2 | 1928 | * the watchdog (see dev_watchdog()) |
536721b1 KK |
1929 | * @watchdog_timer: List of timers |
1930 | * | |
eb02d39a | 1931 | * @proto_down_reason: reason a netdev interface is held down |
536721b1 | 1932 | * @pcpu_refcnt: Number of references to this device |
add2d736 | 1933 | * @dev_refcnt: Number of references to this device |
4d92b95f | 1934 | * @refcnt_tracker: Tracker directory for tracked references to this device |
536721b1 | 1935 | * @todo_list: Delayed register/unregister |
536721b1 KK |
1936 | * @link_watch_list: XXX: need comments on this one |
1937 | * | |
1938 | * @reg_state: Register/unregister state machine | |
1939 | * @dismantle: Device is going to be freed | |
1940 | * @rtnl_link_state: This enum represents the phases of creating | |
1941 | * a new link | |
1942 | * | |
cf124db5 DM |
1943 | * @needs_free_netdev: Should unregister perform free_netdev? |
1944 | * @priv_destructor: Called from unregister | |
536721b1 KK |
1945 | * @npinfo: XXX: need comments on this one |
1946 | * @nd_net: Network namespace this network device is inside | |
1947 | * | |
1948 | * @ml_priv: Mid-layer private | |
4e096a18 | 1949 | * @ml_priv_type: Mid-layer private type |
536721b1 KK |
1950 | * @lstats: Loopback statistics |
1951 | * @tstats: Tunnel statistics | |
1952 | * @dstats: Dummy statistics | |
1953 | * @vstats: Virtual ethernet statistics | |
1954 | * | |
1955 | * @garp_port: GARP | |
1956 | * @mrp_port: MRP | |
1957 | * | |
4a0cb83b JK |
1958 | * @dm_private: Drop monitor private |
1959 | * | |
536721b1 KK |
1960 | * @dev: Class/net/name entry |
1961 | * @sysfs_groups: Space for optional device, statistics and wireless | |
1962 | * sysfs groups | |
1963 | * | |
1964 | * @sysfs_rx_queue_group: Space for optional per-rx queue attributes | |
1965 | * @rtnl_link_ops: Rtnl_link_ops | |
1966 | * | |
1967 | * @gso_max_size: Maximum size of generic segmentation offload | |
14d7b812 | 1968 | * @tso_max_size: Device (as in HW) limit on the max TSO request size |
536721b1 KK |
1969 | * @gso_max_segs: Maximum number of segments that can be passed to the |
1970 | * NIC for GSO | |
14d7b812 | 1971 | * @tso_max_segs: Device (as in HW) limit on the max TSO segment count |
9eefedd5 XL |
1972 | * @gso_ipv4_max_size: Maximum size of generic segmentation offload, |
1973 | * for IPv4. | |
536721b1 KK |
1974 | * |
1975 | * @dcbnl_ops: Data Center Bridging netlink ops | |
1976 | * @num_tc: Number of traffic classes in the net device | |
1977 | * @tc_to_txq: XXX: need comments on this one | |
920c1cd3 | 1978 | * @prio_tc_map: XXX: need comments on this one |
536721b1 KK |
1979 | * |
1980 | * @fcoe_ddp_xid: Max exchange id for FCoE LRO by ddp | |
1981 | * | |
1982 | * @priomap: XXX: need comments on this one | |
1983 | * @phydev: Physical device may attach itself | |
1984 | * for hardware timestamping | |
e679c9c1 | 1985 | * @sfp_bus: attached &struct sfp_bus structure. |
1a33e10e | 1986 | * |
1a33e10e | 1987 | * @qdisc_tx_busylock: lockdep class annotating Qdisc->busylock spinlock |
536721b1 | 1988 | * |
d746d707 AK |
1989 | * @proto_down: protocol port state information can be sent to the |
1990 | * switch driver and used to set the phys state of the | |
1991 | * switch port. | |
1992 | * | |
61941143 HK |
1993 | * @wol_enabled: Wake-on-LAN is enabled |
1994 | * | |
29863d41 WW |
1995 | * @threaded: napi threaded mode is enabled |
1996 | * | |
93642e14 JP |
1997 | * @net_notifier_list: List of per-net netdev notifier block |
1998 | * that follow this device when it is moved | |
1999 | * to another network namespace. | |
2000 | * | |
30e9bb84 AT |
2001 | * @macsec_ops: MACsec offloading ops |
2002 | * | |
cc4e3835 JK |
2003 | * @udp_tunnel_nic_info: static structure describing the UDP tunnel |
2004 | * offload capabilities of the device | |
2005 | * @udp_tunnel_nic: UDP tunnel offload state | |
ffa59b0b | 2006 | * @xdp_state: stores info on attached XDP BPF programs |
cc4e3835 | 2007 | * |
b62e3317 | 2008 | * @nested_level: Used as a parameter of spin_lock_nested() of |
a93bdcb9 MCC |
2009 | * dev->addr_list_lock. |
2010 | * @unlink_list: As netif_addr_lock() can be called recursively, | |
2011 | * keep a list of interfaces to be deleted. | |
eac1b93c CL |
2012 | * @gro_max_size: Maximum size of aggregated packet in generic |
2013 | * receive offload (GRO) | |
9eefedd5 XL |
2014 | * @gro_ipv4_max_size: Maximum size of aggregated packet in generic |
2015 | * receive offload (GRO), for IPv4. | |
a93bdcb9 | 2016 | * |
d07b26f5 | 2017 | * @dev_addr_shadow: Copy of @dev_addr to catch direct writes. |
63f13937 | 2018 | * @linkwatch_dev_tracker: refcount tracker used by linkwatch. |
f12bf6f3 | 2019 | * @watchdog_dev_tracker: refcount tracker used by watchdog. |
b2309a71 ED |
2020 | * @dev_registered_tracker: tracker for reference held while |
2021 | * registered | |
9309f97a | 2022 | * @offload_xstats_l3: L3 HW stats for this netdevice. |
d07b26f5 | 2023 | * |
02a68a47 JP |
2024 | * @devlink_port: Pointer to related devlink port structure. |
2025 | * Assigned by a driver before netdev registration using | |
2026 | * SET_NETDEV_DEVLINK_PORT macro. This pointer is static | |
2027 | * during the time netdevice is registered. | |
2028 | * | |
1da177e4 LT |
2029 | * FIXME: cleanup struct net_device such that network protocol info |
2030 | * moves out. | |
2031 | */ | |
2032 | ||
d94d9fee | 2033 | struct net_device { |
1da177e4 | 2034 | char name[IFNAMSIZ]; |
ff927412 | 2035 | struct netdev_name_node *name_node; |
6c557001 | 2036 | struct dev_ifalias __rcu *ifalias; |
1da177e4 LT |
2037 | /* |
2038 | * I/O specific fields | |
2039 | * FIXME: Merge these and struct ifmap into one | |
2040 | */ | |
536721b1 KK |
2041 | unsigned long mem_end; |
2042 | unsigned long mem_start; | |
2043 | unsigned long base_addr; | |
1da177e4 LT |
2044 | |
2045 | /* | |
536721b1 KK |
2046 | * Some hardware also needs these fields (state,dev_list, |
2047 | * napi_list,unreg_list,close_list) but they are not | |
1da177e4 LT |
2048 | * part of the usual set specified in Space.c. |
2049 | */ | |
2050 | ||
1da177e4 LT |
2051 | unsigned long state; |
2052 | ||
7562f876 | 2053 | struct list_head dev_list; |
bea3348e | 2054 | struct list_head napi_list; |
44a0873d | 2055 | struct list_head unreg_list; |
5cde2829 | 2056 | struct list_head close_list; |
7866a621 SN |
2057 | struct list_head ptype_all; |
2058 | struct list_head ptype_specific; | |
2f268f12 | 2059 | |
2f268f12 VF |
2060 | struct { |
2061 | struct list_head upper; | |
2062 | struct list_head lower; | |
2063 | } adj_list; | |
2064 | ||
28af22c6 JDB |
2065 | /* Read-mostly cache-line for fast-path access */ |
2066 | unsigned int flags; | |
d3d854fd | 2067 | xdp_features_t xdp_features; |
2106efda | 2068 | unsigned long long priv_flags; |
28af22c6 | 2069 | const struct net_device_ops *netdev_ops; |
3d76a4d3 | 2070 | const struct xdp_metadata_ops *xdp_metadata_ops; |
28af22c6 JDB |
2071 | int ifindex; |
2072 | unsigned short gflags; | |
2073 | unsigned short hard_header_len; | |
2074 | ||
2075 | /* Note : dev->mtu is often read without holding a lock. | |
2076 | * Writers usually hold RTNL. | |
2077 | * It is recommended to use READ_ONCE() to annotate the reads, | |
2078 | * and to use WRITE_ONCE() to annotate the writes. | |
2079 | */ | |
2080 | unsigned int mtu; | |
2081 | unsigned short needed_headroom; | |
2082 | unsigned short needed_tailroom; | |
2083 | ||
c8f44aff | 2084 | netdev_features_t features; |
c8f44aff | 2085 | netdev_features_t hw_features; |
c8f44aff | 2086 | netdev_features_t wanted_features; |
c8f44aff | 2087 | netdev_features_t vlan_features; |
6a674e9c | 2088 | netdev_features_t hw_enc_features; |
0d89d203 | 2089 | netdev_features_t mpls_features; |
802ab55a | 2090 | netdev_features_t gso_partial_features; |
04ed3e74 | 2091 | |
28af22c6 JDB |
2092 | unsigned int min_mtu; |
2093 | unsigned int max_mtu; | |
2094 | unsigned short type; | |
2095 | unsigned char min_header_len; | |
2096 | unsigned char name_assign_type; | |
2097 | ||
7a66bbc9 | 2098 | int group; |
1da177e4 | 2099 | |
28af22c6 | 2100 | struct net_device_stats stats; /* not used by modern drivers */ |
015f0688 | 2101 | |
625788b5 | 2102 | struct net_device_core_stats __percpu *core_stats; |
1da177e4 | 2103 | |
b2d3bcfa DD |
2104 | /* Stats to monitor link on/off, flapping */ |
2105 | atomic_t carrier_up_count; | |
2106 | atomic_t carrier_down_count; | |
2107 | ||
b86e0280 | 2108 | #ifdef CONFIG_WIRELESS_EXT |
5e82b4b2 BH |
2109 | const struct iw_handler_def *wireless_handlers; |
2110 | struct iw_public_data *wireless_data; | |
b86e0280 | 2111 | #endif |
76fd8593 | 2112 | const struct ethtool_ops *ethtool_ops; |
1b69c6d0 DA |
2113 | #ifdef CONFIG_NET_L3_MASTER_DEV |
2114 | const struct l3mdev_ops *l3mdev_ops; | |
2115 | #endif | |
f997c55c AA |
2116 | #if IS_ENABLED(CONFIG_IPV6) |
2117 | const struct ndisc_ops *ndisc_ops; | |
2118 | #endif | |
1da177e4 | 2119 | |
9cb0d21d | 2120 | #ifdef CONFIG_XFRM_OFFLOAD |
d77e38e6 SK |
2121 | const struct xfrmdev_ops *xfrmdev_ops; |
2122 | #endif | |
2123 | ||
a5c37c63 IL |
2124 | #if IS_ENABLED(CONFIG_TLS_DEVICE) |
2125 | const struct tlsdev_ops *tlsdev_ops; | |
2126 | #endif | |
2127 | ||
3b04ddde SH |
2128 | const struct header_ops *header_ops; |
2129 | ||
536721b1 KK |
2130 | unsigned char operstate; |
2131 | unsigned char link_mode; | |
b00055aa | 2132 | |
536721b1 KK |
2133 | unsigned char if_port; |
2134 | unsigned char dma; | |
bdc220da | 2135 | |
1da177e4 | 2136 | /* Interface address info. */ |
536721b1 KK |
2137 | unsigned char perm_addr[MAX_ADDR_LEN]; |
2138 | unsigned char addr_assign_type; | |
2139 | unsigned char addr_len; | |
5343da4c TY |
2140 | unsigned char upper_level; |
2141 | unsigned char lower_level; | |
1fc70edb | 2142 | |
a0a9663d | 2143 | unsigned short neigh_priv_len; |
536721b1 KK |
2144 | unsigned short dev_id; |
2145 | unsigned short dev_port; | |
28af22c6 JDB |
2146 | unsigned short padded; |
2147 | ||
ccffad25 | 2148 | spinlock_t addr_list_lock; |
28af22c6 | 2149 | int irq; |
1fc70edb | 2150 | |
536721b1 KK |
2151 | struct netdev_hw_addr_list uc; |
2152 | struct netdev_hw_addr_list mc; | |
2153 | struct netdev_hw_addr_list dev_addrs; | |
2154 | ||
4c3d5e7b ED |
2155 | #ifdef CONFIG_SYSFS |
2156 | struct kset *queues_kset; | |
1fc70edb TY |
2157 | #endif |
2158 | #ifdef CONFIG_LOCKDEP | |
2159 | struct list_head unlink_list; | |
4c3d5e7b | 2160 | #endif |
9d45abe1 WC |
2161 | unsigned int promiscuity; |
2162 | unsigned int allmulti; | |
1fc70edb TY |
2163 | bool uc_promisc; |
2164 | #ifdef CONFIG_LOCKDEP | |
2165 | unsigned char nested_level; | |
2166 | #endif | |
1da177e4 | 2167 | |
1da177e4 | 2168 | |
5e82b4b2 | 2169 | /* Protocol-specific pointers */ |
65ac6a5f | 2170 | |
c304eddc JK |
2171 | struct in_device __rcu *ip_ptr; |
2172 | struct inet6_dev __rcu *ip6_ptr; | |
d11ead75 | 2173 | #if IS_ENABLED(CONFIG_VLAN_8021Q) |
536721b1 | 2174 | struct vlan_info __rcu *vlan_info; |
65ac6a5f | 2175 | #endif |
34a430d7 | 2176 | #if IS_ENABLED(CONFIG_NET_DSA) |
2f657a60 | 2177 | struct dsa_port *dsa_ptr; |
37cb0620 YX |
2178 | #endif |
2179 | #if IS_ENABLED(CONFIG_TIPC) | |
536721b1 | 2180 | struct tipc_bearer __rcu *tipc_ptr; |
91da11f8 | 2181 | #endif |
d6c6d0bb | 2182 | #if IS_ENABLED(CONFIG_ATALK) |
536721b1 | 2183 | void *atalk_ptr; |
89e58148 | 2184 | #endif |
19ff13f2 | 2185 | #if IS_ENABLED(CONFIG_AX25) |
536721b1 | 2186 | void *ax25_ptr; |
19ff13f2 | 2187 | #endif |
c304eddc | 2188 | #if IS_ENABLED(CONFIG_CFG80211) |
536721b1 | 2189 | struct wireless_dev *ieee80211_ptr; |
c304eddc JK |
2190 | #endif |
2191 | #if IS_ENABLED(CONFIG_IEEE802154) || IS_ENABLED(CONFIG_6LOWPAN) | |
98a18b6f | 2192 | struct wpan_dev *ieee802154_ptr; |
c304eddc | 2193 | #endif |
03c57747 RS |
2194 | #if IS_ENABLED(CONFIG_MPLS_ROUTING) |
2195 | struct mpls_dev __rcu *mpls_ptr; | |
2196 | #endif | |
583be982 JK |
2197 | #if IS_ENABLED(CONFIG_MCTP) |
2198 | struct mctp_dev __rcu *mctp_ptr; | |
2199 | #endif | |
1da177e4 | 2200 | |
9356b8fc | 2201 | /* |
cd13539b | 2202 | * Cache lines mostly used on receive path (including eth_type_trans()) |
9356b8fc | 2203 | */ |
9356b8fc | 2204 | /* Interface address info used in eth_type_trans() */ |
adeef3e3 | 2205 | const unsigned char *dev_addr; |
f001fde5 | 2206 | |
0a9627f2 | 2207 | struct netdev_rx_queue *_rx; |
0a9627f2 | 2208 | unsigned int num_rx_queues; |
62fe0b40 | 2209 | unsigned int real_num_rx_queues; |
0a9627f2 | 2210 | |
7acedaf5 | 2211 | struct bpf_prog __rcu *xdp_prog; |
3b47d303 | 2212 | unsigned long gro_flush_timeout; |
6f8b12d6 | 2213 | int napi_defer_hard_irqs; |
0fe79f28 AD |
2214 | #define GRO_LEGACY_MAX_SIZE 65536u |
2215 | /* TCP minimal MSS is 8 (TCP_MIN_GSO_SIZE), | |
2216 | * and shinfo->gso_segs is a 16bit field. | |
2217 | */ | |
2218 | #define GRO_MAX_SIZE (8 * 65535u) | |
eac1b93c | 2219 | unsigned int gro_max_size; |
9eefedd5 | 2220 | unsigned int gro_ipv4_max_size; |
61391cde | 2221 | rx_handler_func_t __rcu *rx_handler; |
2222 | void __rcu *rx_handler_data; | |
e8a0464c | 2223 | |
4cda01e8 | 2224 | #ifdef CONFIG_NET_CLS_ACT |
46209401 | 2225 | struct mini_Qdisc __rcu *miniq_ingress; |
d2788d34 | 2226 | #endif |
24824a09 | 2227 | struct netdev_queue __rcu *ingress_queue; |
e687ad60 | 2228 | #ifdef CONFIG_NETFILTER_INGRESS |
960632ec | 2229 | struct nf_hook_entries __rcu *nf_hooks_ingress; |
e687ad60 | 2230 | #endif |
d2788d34 | 2231 | |
536721b1 | 2232 | unsigned char broadcast[MAX_ADDR_LEN]; |
14ffbbb8 TG |
2233 | #ifdef CONFIG_RFS_ACCEL |
2234 | struct cpu_rmap *rx_cpu_rmap; | |
2235 | #endif | |
2236 | struct hlist_node index_hlist; | |
cd13539b ED |
2237 | |
2238 | /* | |
2239 | * Cache lines mostly used on transmit path | |
2240 | */ | |
e8a0464c DM |
2241 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
2242 | unsigned int num_tx_queues; | |
fd2ea0a7 | 2243 | unsigned int real_num_tx_queues; |
5891cd5e | 2244 | struct Qdisc __rcu *qdisc; |
0cd29503 | 2245 | unsigned int tx_queue_len; |
c3f26a26 | 2246 | spinlock_t tx_global_lock; |
75ccae62 THJ |
2247 | |
2248 | struct xdp_dev_bulk_queue __percpu *xdp_bulkq; | |
cd13539b | 2249 | |
bf264145 | 2250 | #ifdef CONFIG_XPS |
044ab86d | 2251 | struct xps_dev_maps __rcu *xps_maps[XPS_MAPS_MAX]; |
bf264145 | 2252 | #endif |
1f211a1b | 2253 | #ifdef CONFIG_NET_CLS_ACT |
46209401 | 2254 | struct mini_Qdisc __rcu *miniq_egress; |
1f211a1b | 2255 | #endif |
42df6e1d LW |
2256 | #ifdef CONFIG_NETFILTER_EGRESS |
2257 | struct nf_hook_entries __rcu *nf_hooks_egress; | |
2258 | #endif | |
0c4f691f | 2259 | |
75ccae62 THJ |
2260 | #ifdef CONFIG_NET_SCHED |
2261 | DECLARE_HASHTABLE (qdisc_hash, 4); | |
2262 | #endif | |
9356b8fc | 2263 | /* These may be needed for future network-power-down code. */ |
9356b8fc | 2264 | struct timer_list watchdog_timer; |
75ccae62 | 2265 | int watchdog_timeo; |
9356b8fc | 2266 | |
829eb208 RP |
2267 | u32 proto_down_reason; |
2268 | ||
1da177e4 | 2269 | struct list_head todo_list; |
919067cc ED |
2270 | |
2271 | #ifdef CONFIG_PCPU_DEV_REFCNT | |
75ccae62 | 2272 | int __percpu *pcpu_refcnt; |
919067cc ED |
2273 | #else |
2274 | refcount_t dev_refcnt; | |
2275 | #endif | |
4d92b95f | 2276 | struct ref_tracker_dir refcnt_tracker; |
1da177e4 | 2277 | |
e014debe | 2278 | struct list_head link_watch_list; |
572a103d | 2279 | |
1da177e4 | 2280 | enum { NETREG_UNINITIALIZED=0, |
b17a7c17 | 2281 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
2282 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
2283 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
2284 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 2285 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
449f4544 ED |
2286 | } reg_state:8; |
2287 | ||
536721b1 | 2288 | bool dismantle; |
a2835763 PM |
2289 | |
2290 | enum { | |
2291 | RTNL_LINK_INITIALIZED, | |
2292 | RTNL_LINK_INITIALIZING, | |
2293 | } rtnl_link_state:16; | |
1da177e4 | 2294 | |
cf124db5 DM |
2295 | bool needs_free_netdev; |
2296 | void (*priv_destructor)(struct net_device *dev); | |
1da177e4 | 2297 | |
1da177e4 | 2298 | #ifdef CONFIG_NETPOLL |
5fbee843 | 2299 | struct netpoll_info __rcu *npinfo; |
1da177e4 | 2300 | #endif |
eae792b7 | 2301 | |
0c5c9fb5 | 2302 | possible_net_t nd_net; |
4a1c5371 | 2303 | |
4951704b | 2304 | /* mid-layer private */ |
4e096a18 OR |
2305 | void *ml_priv; |
2306 | enum netdev_ml_priv_type ml_priv_type; | |
2307 | ||
a7855c78 | 2308 | union { |
536721b1 | 2309 | struct pcpu_lstats __percpu *lstats; |
8f84985f | 2310 | struct pcpu_sw_netstats __percpu *tstats; |
536721b1 | 2311 | struct pcpu_dstats __percpu *dstats; |
a7855c78 | 2312 | }; |
536721b1 | 2313 | |
fb585b44 | 2314 | #if IS_ENABLED(CONFIG_GARP) |
3cc77ec7 | 2315 | struct garp_port __rcu *garp_port; |
fb585b44 TK |
2316 | #endif |
2317 | #if IS_ENABLED(CONFIG_MRP) | |
febf018d | 2318 | struct mrp_port __rcu *mrp_port; |
fb585b44 | 2319 | #endif |
b26ef81c ED |
2320 | #if IS_ENABLED(CONFIG_NET_DROP_MONITOR) |
2321 | struct dm_hw_stat_delta __rcu *dm_private; | |
2322 | #endif | |
5e82b4b2 | 2323 | struct device dev; |
0c509a6c | 2324 | const struct attribute_group *sysfs_groups[4]; |
a953be53 | 2325 | const struct attribute_group *sysfs_rx_queue_group; |
38f7b870 | 2326 | |
38f7b870 | 2327 | const struct rtnl_link_ops *rtnl_link_ops; |
f25f4e44 | 2328 | |
82cc1a7a | 2329 | /* for setting kernel sock attribute on TCP connection setup */ |
34b92e8d | 2330 | #define GSO_MAX_SEGS 65535u |
7c4e983c | 2331 | #define GSO_LEGACY_MAX_SIZE 65536u |
34b92e8d ED |
2332 | /* TCP minimal MSS is 8 (TCP_MIN_GSO_SIZE), |
2333 | * and shinfo->gso_segs is a 16bit field. | |
2334 | */ | |
2335 | #define GSO_MAX_SIZE (8 * GSO_MAX_SEGS) | |
7c4e983c | 2336 | |
82cc1a7a | 2337 | unsigned int gso_max_size; |
14d7b812 JK |
2338 | #define TSO_LEGACY_MAX_SIZE 65536 |
2339 | #define TSO_MAX_SIZE UINT_MAX | |
2340 | unsigned int tso_max_size; | |
30b678d8 | 2341 | u16 gso_max_segs; |
14d7b812 JK |
2342 | #define TSO_MAX_SEGS U16_MAX |
2343 | u16 tso_max_segs; | |
9eefedd5 | 2344 | unsigned int gso_ipv4_max_size; |
743b03a8 | 2345 | |
7a6b6f51 | 2346 | #ifdef CONFIG_DCB |
32953543 | 2347 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
2f90b865 | 2348 | #endif |
ffcfe25b | 2349 | s16 num_tc; |
5e82b4b2 BH |
2350 | struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE]; |
2351 | u8 prio_tc_map[TC_BITMASK + 1]; | |
2f90b865 | 2352 | |
d11ead75 | 2353 | #if IS_ENABLED(CONFIG_FCOE) |
4d288d57 | 2354 | unsigned int fcoe_ddp_xid; |
5bc1421e | 2355 | #endif |
86f8515f | 2356 | #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO) |
5bc1421e | 2357 | struct netprio_map __rcu *priomap; |
4d288d57 | 2358 | #endif |
5e82b4b2 | 2359 | struct phy_device *phydev; |
e679c9c1 | 2360 | struct sfp_bus *sfp_bus; |
1a33e10e | 2361 | struct lock_class_key *qdisc_tx_busylock; |
5e82b4b2 | 2362 | bool proto_down; |
61941143 | 2363 | unsigned wol_enabled:1; |
29863d41 | 2364 | unsigned threaded:1; |
93642e14 JP |
2365 | |
2366 | struct list_head net_notifier_list; | |
30e9bb84 AT |
2367 | |
2368 | #if IS_ENABLED(CONFIG_MACSEC) | |
2369 | /* MACsec management functions */ | |
2370 | const struct macsec_ops *macsec_ops; | |
2371 | #endif | |
cc4e3835 JK |
2372 | const struct udp_tunnel_nic_info *udp_tunnel_nic_info; |
2373 | struct udp_tunnel_nic *udp_tunnel_nic; | |
7f0a8382 AN |
2374 | |
2375 | /* protected by rtnl_lock */ | |
2376 | struct bpf_xdp_entity xdp_state[__MAX_XDP_MODE]; | |
d07b26f5 JK |
2377 | |
2378 | u8 dev_addr_shadow[MAX_ADDR_LEN]; | |
63f13937 | 2379 | netdevice_tracker linkwatch_dev_tracker; |
f12bf6f3 | 2380 | netdevice_tracker watchdog_dev_tracker; |
b2309a71 | 2381 | netdevice_tracker dev_registered_tracker; |
9309f97a | 2382 | struct rtnl_hw_stats64 *offload_xstats_l3; |
02a68a47 JP |
2383 | |
2384 | struct devlink_port *devlink_port; | |
1da177e4 | 2385 | }; |
43cb76d9 | 2386 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 | 2387 | |
02a68a47 JP |
2388 | /* |
2389 | * Driver should use this to assign devlink port instance to a netdevice | |
2390 | * before it registers the netdevice. Therefore devlink_port is static | |
2391 | * during the netdev lifetime after it is registered. | |
2392 | */ | |
2393 | #define SET_NETDEV_DEVLINK_PORT(dev, port) \ | |
2394 | ({ \ | |
2395 | WARN_ON((dev)->reg_state != NETREG_UNINITIALIZED); \ | |
2396 | ((dev)->devlink_port = (port)); \ | |
2397 | }) | |
2398 | ||
b5cdae32 DM |
2399 | static inline bool netif_elide_gro(const struct net_device *dev) |
2400 | { | |
2401 | if (!(dev->features & NETIF_F_GRO) || dev->xdp_prog) | |
2402 | return true; | |
2403 | return false; | |
2404 | } | |
2405 | ||
1da177e4 | 2406 | #define NETDEV_ALIGN 32 |
1da177e4 | 2407 | |
4f57c087 JF |
2408 | static inline |
2409 | int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio) | |
2410 | { | |
2411 | return dev->prio_tc_map[prio & TC_BITMASK]; | |
2412 | } | |
2413 | ||
2414 | static inline | |
2415 | int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc) | |
2416 | { | |
2417 | if (tc >= dev->num_tc) | |
2418 | return -EINVAL; | |
2419 | ||
2420 | dev->prio_tc_map[prio & TC_BITMASK] = tc & TC_BITMASK; | |
2421 | return 0; | |
2422 | } | |
2423 | ||
8d059b0f | 2424 | int netdev_txq_to_tc(struct net_device *dev, unsigned int txq); |
9cf1f6a8 AD |
2425 | void netdev_reset_tc(struct net_device *dev); |
2426 | int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset); | |
2427 | int netdev_set_num_tc(struct net_device *dev, u8 num_tc); | |
4f57c087 JF |
2428 | |
2429 | static inline | |
2430 | int netdev_get_num_tc(struct net_device *dev) | |
2431 | { | |
2432 | return dev->num_tc; | |
2433 | } | |
2434 | ||
f468f21b TT |
2435 | static inline void net_prefetch(void *p) |
2436 | { | |
2437 | prefetch(p); | |
2438 | #if L1_CACHE_BYTES < 128 | |
2439 | prefetch((u8 *)p + L1_CACHE_BYTES); | |
2440 | #endif | |
2441 | } | |
2442 | ||
2443 | static inline void net_prefetchw(void *p) | |
2444 | { | |
2445 | prefetchw(p); | |
2446 | #if L1_CACHE_BYTES < 128 | |
2447 | prefetchw((u8 *)p + L1_CACHE_BYTES); | |
2448 | #endif | |
2449 | } | |
2450 | ||
ffcfe25b AD |
2451 | void netdev_unbind_sb_channel(struct net_device *dev, |
2452 | struct net_device *sb_dev); | |
2453 | int netdev_bind_sb_channel_queue(struct net_device *dev, | |
2454 | struct net_device *sb_dev, | |
2455 | u8 tc, u16 count, u16 offset); | |
2456 | int netdev_set_sb_channel(struct net_device *dev, u16 channel); | |
2457 | static inline int netdev_get_sb_channel(struct net_device *dev) | |
2458 | { | |
2459 | return max_t(int, -dev->num_tc, 0); | |
2460 | } | |
2461 | ||
e8a0464c DM |
2462 | static inline |
2463 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
2464 | unsigned int index) | |
2465 | { | |
2466 | return &dev->_tx[index]; | |
2467 | } | |
2468 | ||
10c51b56 DB |
2469 | static inline struct netdev_queue *skb_get_tx_queue(const struct net_device *dev, |
2470 | const struct sk_buff *skb) | |
2471 | { | |
2472 | return netdev_get_tx_queue(dev, skb_get_queue_mapping(skb)); | |
2473 | } | |
2474 | ||
e8a0464c DM |
2475 | static inline void netdev_for_each_tx_queue(struct net_device *dev, |
2476 | void (*f)(struct net_device *, | |
2477 | struct netdev_queue *, | |
2478 | void *), | |
2479 | void *arg) | |
2480 | { | |
2481 | unsigned int i; | |
2482 | ||
2483 | for (i = 0; i < dev->num_tx_queues; i++) | |
2484 | f(dev, &dev->_tx[i], arg); | |
2485 | } | |
2486 | ||
1a33e10e CW |
2487 | #define netdev_lockdep_set_classes(dev) \ |
2488 | { \ | |
2489 | static struct lock_class_key qdisc_tx_busylock_key; \ | |
1a33e10e | 2490 | static struct lock_class_key qdisc_xmit_lock_key; \ |
845e0ebb | 2491 | static struct lock_class_key dev_addr_list_lock_key; \ |
1a33e10e CW |
2492 | unsigned int i; \ |
2493 | \ | |
2494 | (dev)->qdisc_tx_busylock = &qdisc_tx_busylock_key; \ | |
845e0ebb CW |
2495 | lockdep_set_class(&(dev)->addr_list_lock, \ |
2496 | &dev_addr_list_lock_key); \ | |
1a33e10e CW |
2497 | for (i = 0; i < (dev)->num_tx_queues; i++) \ |
2498 | lockdep_set_class(&(dev)->_tx[i]._xmit_lock, \ | |
2499 | &qdisc_xmit_lock_key); \ | |
2500 | } | |
2501 | ||
b71b5837 PA |
2502 | u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb, |
2503 | struct net_device *sb_dev); | |
4bd97d51 PA |
2504 | struct netdev_queue *netdev_core_pick_tx(struct net_device *dev, |
2505 | struct sk_buff *skb, | |
2506 | struct net_device *sb_dev); | |
8c4c49df | 2507 | |
871b642a PA |
2508 | /* returns the headroom that the master device needs to take in account |
2509 | * when forwarding to this dev | |
2510 | */ | |
2511 | static inline unsigned netdev_get_fwd_headroom(struct net_device *dev) | |
2512 | { | |
2513 | return dev->priv_flags & IFF_PHONY_HEADROOM ? 0 : dev->needed_headroom; | |
2514 | } | |
2515 | ||
2516 | static inline void netdev_set_rx_headroom(struct net_device *dev, int new_hr) | |
2517 | { | |
2518 | if (dev->netdev_ops->ndo_set_rx_headroom) | |
2519 | dev->netdev_ops->ndo_set_rx_headroom(dev, new_hr); | |
2520 | } | |
2521 | ||
2522 | /* set the device rx headroom to the dev's default */ | |
2523 | static inline void netdev_reset_rx_headroom(struct net_device *dev) | |
2524 | { | |
2525 | netdev_set_rx_headroom(dev, -1); | |
2526 | } | |
2527 | ||
4e096a18 OR |
2528 | static inline void *netdev_get_ml_priv(struct net_device *dev, |
2529 | enum netdev_ml_priv_type type) | |
2530 | { | |
2531 | if (dev->ml_priv_type != type) | |
2532 | return NULL; | |
2533 | ||
2534 | return dev->ml_priv; | |
2535 | } | |
2536 | ||
2537 | static inline void netdev_set_ml_priv(struct net_device *dev, | |
2538 | void *ml_priv, | |
2539 | enum netdev_ml_priv_type type) | |
2540 | { | |
2541 | WARN(dev->ml_priv_type && dev->ml_priv_type != type, | |
2542 | "Overwriting already set ml_priv_type (%u) with different ml_priv_type (%u)!\n", | |
2543 | dev->ml_priv_type, type); | |
2544 | WARN(!dev->ml_priv_type && dev->ml_priv, | |
2545 | "Overwriting already set ml_priv and ml_priv_type is ML_PRIV_NONE!\n"); | |
2546 | ||
2547 | dev->ml_priv = ml_priv; | |
2548 | dev->ml_priv_type = type; | |
2549 | } | |
2550 | ||
c346dca1 YH |
2551 | /* |
2552 | * Net namespace inlines | |
2553 | */ | |
2554 | static inline | |
2555 | struct net *dev_net(const struct net_device *dev) | |
2556 | { | |
c2d9ba9b | 2557 | return read_pnet(&dev->nd_net); |
c346dca1 YH |
2558 | } |
2559 | ||
2560 | static inline | |
f5aa23fd | 2561 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 | 2562 | { |
0c5c9fb5 | 2563 | write_pnet(&dev->nd_net, net); |
c346dca1 YH |
2564 | } |
2565 | ||
bea3348e SH |
2566 | /** |
2567 | * netdev_priv - access network device private data | |
2568 | * @dev: network device | |
2569 | * | |
2570 | * Get network device private data | |
2571 | */ | |
6472ce60 | 2572 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 2573 | { |
1ce8e7b5 | 2574 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
1da177e4 LT |
2575 | } |
2576 | ||
1da177e4 LT |
2577 | /* Set the sysfs physical device reference for the network logical device |
2578 | * if set prior to registration will cause a symlink during initialization. | |
2579 | */ | |
43cb76d9 | 2580 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 2581 | |
384912ed | 2582 | /* Set the sysfs device type for the network logical device to allow |
3f79410c | 2583 | * fine-grained identification of different network device types. For |
5e82b4b2 | 2584 | * example Ethernet, Wireless LAN, Bluetooth, WiMAX etc. |
384912ed MH |
2585 | */ |
2586 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) | |
2587 | ||
82dc3c63 ED |
2588 | /* Default NAPI poll() weight |
2589 | * Device drivers are strongly advised to not use bigger value | |
2590 | */ | |
2591 | #define NAPI_POLL_WEIGHT 64 | |
2592 | ||
58caed3d JK |
2593 | void netif_napi_add_weight(struct net_device *dev, struct napi_struct *napi, |
2594 | int (*poll)(struct napi_struct *, int), int weight); | |
2595 | ||
3b582cc1 | 2596 | /** |
58caed3d JK |
2597 | * netif_napi_add() - initialize a NAPI context |
2598 | * @dev: network device | |
2599 | * @napi: NAPI context | |
2600 | * @poll: polling function | |
3b582cc1 | 2601 | * |
5e82b4b2 BH |
2602 | * netif_napi_add() must be used to initialize a NAPI context prior to calling |
2603 | * *any* of the other NAPI-related functions. | |
3b582cc1 | 2604 | */ |
58caed3d JK |
2605 | static inline void |
2606 | netif_napi_add(struct net_device *dev, struct napi_struct *napi, | |
b48b89f9 | 2607 | int (*poll)(struct napi_struct *, int)) |
58caed3d | 2608 | { |
b48b89f9 | 2609 | netif_napi_add_weight(dev, napi, poll, NAPI_POLL_WEIGHT); |
58caed3d JK |
2610 | } |
2611 | ||
2612 | static inline void | |
2613 | netif_napi_add_tx_weight(struct net_device *dev, | |
2614 | struct napi_struct *napi, | |
2615 | int (*poll)(struct napi_struct *, int), | |
2616 | int weight) | |
2617 | { | |
2618 | set_bit(NAPI_STATE_NO_BUSY_POLL, &napi->state); | |
2619 | netif_napi_add_weight(dev, napi, poll, weight); | |
2620 | } | |
2621 | ||
d64b5e85 | 2622 | /** |
58caed3d JK |
2623 | * netif_napi_add_tx() - initialize a NAPI context to be used for Tx only |
2624 | * @dev: network device | |
2625 | * @napi: NAPI context | |
2626 | * @poll: polling function | |
d64b5e85 ED |
2627 | * |
2628 | * This variant of netif_napi_add() should be used from drivers using NAPI | |
2629 | * to exclusively poll a TX queue. | |
2630 | * This will avoid we add it into napi_hash[], thus polluting this hash table. | |
2631 | */ | |
58caed3d | 2632 | static inline void netif_napi_add_tx(struct net_device *dev, |
d64b5e85 | 2633 | struct napi_struct *napi, |
58caed3d | 2634 | int (*poll)(struct napi_struct *, int)) |
d64b5e85 | 2635 | { |
58caed3d | 2636 | netif_napi_add_tx_weight(dev, napi, poll, NAPI_POLL_WEIGHT); |
d64b5e85 ED |
2637 | } |
2638 | ||
5198d545 JK |
2639 | /** |
2640 | * __netif_napi_del - remove a NAPI context | |
2641 | * @napi: NAPI context | |
2642 | * | |
2643 | * Warning: caller must observe RCU grace period before freeing memory | |
2644 | * containing @napi. Drivers might want to call this helper to combine | |
2645 | * all the needed RCU grace periods into a single one. | |
2646 | */ | |
2647 | void __netif_napi_del(struct napi_struct *napi); | |
2648 | ||
d8156534 | 2649 | /** |
5e82b4b2 BH |
2650 | * netif_napi_del - remove a NAPI context |
2651 | * @napi: NAPI context | |
d8156534 | 2652 | * |
5e82b4b2 | 2653 | * netif_napi_del() removes a NAPI context from the network device NAPI list |
d8156534 | 2654 | */ |
5198d545 JK |
2655 | static inline void netif_napi_del(struct napi_struct *napi) |
2656 | { | |
2657 | __netif_napi_del(napi); | |
2658 | synchronize_net(); | |
2659 | } | |
d565b0a1 | 2660 | |
1da177e4 | 2661 | struct packet_type { |
f2ccd8fa | 2662 | __be16 type; /* This is really htons(ether_type). */ |
fa788d98 | 2663 | bool ignore_outgoing; |
f2ccd8fa | 2664 | struct net_device *dev; /* NULL is wildcarded here */ |
f1d9268e | 2665 | netdevice_tracker dev_tracker; |
f2ccd8fa DM |
2666 | int (*func) (struct sk_buff *, |
2667 | struct net_device *, | |
2668 | struct packet_type *, | |
2669 | struct net_device *); | |
17266ee9 EC |
2670 | void (*list_func) (struct list_head *, |
2671 | struct packet_type *, | |
2672 | struct net_device *); | |
c0de08d0 EL |
2673 | bool (*id_match)(struct packet_type *ptype, |
2674 | struct sock *sk); | |
47934e06 | 2675 | struct net *af_packet_net; |
1da177e4 LT |
2676 | void *af_packet_priv; |
2677 | struct list_head list; | |
2678 | }; | |
2679 | ||
f191a1d1 | 2680 | struct offload_callbacks { |
576a30eb | 2681 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
c8f44aff | 2682 | netdev_features_t features); |
d4546c25 DM |
2683 | struct sk_buff *(*gro_receive)(struct list_head *head, |
2684 | struct sk_buff *skb); | |
299603e8 | 2685 | int (*gro_complete)(struct sk_buff *skb, int nhoff); |
f191a1d1 VY |
2686 | }; |
2687 | ||
2688 | struct packet_offload { | |
2689 | __be16 type; /* This is really htons(ether_type). */ | |
bdef7de4 | 2690 | u16 priority; |
f191a1d1 VY |
2691 | struct offload_callbacks callbacks; |
2692 | struct list_head list; | |
1da177e4 LT |
2693 | }; |
2694 | ||
5e82b4b2 | 2695 | /* often modified stats are per-CPU, other are shared (netdev->stats) */ |
8f84985f | 2696 | struct pcpu_sw_netstats { |
9962acef ED |
2697 | u64_stats_t rx_packets; |
2698 | u64_stats_t rx_bytes; | |
2699 | u64_stats_t tx_packets; | |
2700 | u64_stats_t tx_bytes; | |
8f84985f | 2701 | struct u64_stats_sync syncp; |
9a5ee462 | 2702 | } __aligned(4 * sizeof(u64)); |
52bb6677 LR |
2703 | |
2704 | struct pcpu_lstats { | |
fd2f4737 ED |
2705 | u64_stats_t packets; |
2706 | u64_stats_t bytes; | |
52bb6677 | 2707 | struct u64_stats_sync syncp; |
9a5ee462 | 2708 | } __aligned(2 * sizeof(u64)); |
8f84985f | 2709 | |
de7d5084 ED |
2710 | void dev_lstats_read(struct net_device *dev, u64 *packets, u64 *bytes); |
2711 | ||
451b05f4 FF |
2712 | static inline void dev_sw_netstats_rx_add(struct net_device *dev, unsigned int len) |
2713 | { | |
2714 | struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats); | |
2715 | ||
2716 | u64_stats_update_begin(&tstats->syncp); | |
9962acef ED |
2717 | u64_stats_add(&tstats->rx_bytes, len); |
2718 | u64_stats_inc(&tstats->rx_packets); | |
451b05f4 FF |
2719 | u64_stats_update_end(&tstats->syncp); |
2720 | } | |
2721 | ||
d3fd6548 HK |
2722 | static inline void dev_sw_netstats_tx_add(struct net_device *dev, |
2723 | unsigned int packets, | |
2724 | unsigned int len) | |
2725 | { | |
2726 | struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats); | |
2727 | ||
2728 | u64_stats_update_begin(&tstats->syncp); | |
9962acef ED |
2729 | u64_stats_add(&tstats->tx_bytes, len); |
2730 | u64_stats_add(&tstats->tx_packets, packets); | |
d3fd6548 HK |
2731 | u64_stats_update_end(&tstats->syncp); |
2732 | } | |
2733 | ||
dd5382a0 ED |
2734 | static inline void dev_lstats_add(struct net_device *dev, unsigned int len) |
2735 | { | |
2736 | struct pcpu_lstats *lstats = this_cpu_ptr(dev->lstats); | |
2737 | ||
2738 | u64_stats_update_begin(&lstats->syncp); | |
fd2f4737 ED |
2739 | u64_stats_add(&lstats->bytes, len); |
2740 | u64_stats_inc(&lstats->packets); | |
dd5382a0 ED |
2741 | u64_stats_update_end(&lstats->syncp); |
2742 | } | |
2743 | ||
aabc92bb PNA |
2744 | #define __netdev_alloc_pcpu_stats(type, gfp) \ |
2745 | ({ \ | |
2746 | typeof(type) __percpu *pcpu_stats = alloc_percpu_gfp(type, gfp);\ | |
2747 | if (pcpu_stats) { \ | |
2748 | int __cpu; \ | |
2749 | for_each_possible_cpu(__cpu) { \ | |
2750 | typeof(type) *stat; \ | |
2751 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ | |
2752 | u64_stats_init(&stat->syncp); \ | |
2753 | } \ | |
2754 | } \ | |
2755 | pcpu_stats; \ | |
1c213bd2 WC |
2756 | }) |
2757 | ||
aabc92bb | 2758 | #define netdev_alloc_pcpu_stats(type) \ |
326fcfa5 | 2759 | __netdev_alloc_pcpu_stats(type, GFP_KERNEL) |
aabc92bb | 2760 | |
81b01894 HK |
2761 | #define devm_netdev_alloc_pcpu_stats(dev, type) \ |
2762 | ({ \ | |
2763 | typeof(type) __percpu *pcpu_stats = devm_alloc_percpu(dev, type);\ | |
2764 | if (pcpu_stats) { \ | |
2765 | int __cpu; \ | |
2766 | for_each_possible_cpu(__cpu) { \ | |
2767 | typeof(type) *stat; \ | |
2768 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ | |
2769 | u64_stats_init(&stat->syncp); \ | |
2770 | } \ | |
2771 | } \ | |
2772 | pcpu_stats; \ | |
2773 | }) | |
2774 | ||
764f5e54 JP |
2775 | enum netdev_lag_tx_type { |
2776 | NETDEV_LAG_TX_TYPE_UNKNOWN, | |
2777 | NETDEV_LAG_TX_TYPE_RANDOM, | |
2778 | NETDEV_LAG_TX_TYPE_BROADCAST, | |
2779 | NETDEV_LAG_TX_TYPE_ROUNDROBIN, | |
2780 | NETDEV_LAG_TX_TYPE_ACTIVEBACKUP, | |
2781 | NETDEV_LAG_TX_TYPE_HASH, | |
2782 | }; | |
2783 | ||
f44aa9ef JH |
2784 | enum netdev_lag_hash { |
2785 | NETDEV_LAG_HASH_NONE, | |
2786 | NETDEV_LAG_HASH_L2, | |
2787 | NETDEV_LAG_HASH_L34, | |
2788 | NETDEV_LAG_HASH_L23, | |
2789 | NETDEV_LAG_HASH_E23, | |
2790 | NETDEV_LAG_HASH_E34, | |
7b8fc010 | 2791 | NETDEV_LAG_HASH_VLAN_SRCMAC, |
f44aa9ef JH |
2792 | NETDEV_LAG_HASH_UNKNOWN, |
2793 | }; | |
2794 | ||
764f5e54 JP |
2795 | struct netdev_lag_upper_info { |
2796 | enum netdev_lag_tx_type tx_type; | |
f44aa9ef | 2797 | enum netdev_lag_hash hash_type; |
764f5e54 JP |
2798 | }; |
2799 | ||
fb1b2e3c JP |
2800 | struct netdev_lag_lower_state_info { |
2801 | u8 link_up : 1, | |
2802 | tx_enabled : 1; | |
2803 | }; | |
2804 | ||
1da177e4 LT |
2805 | #include <linux/notifier.h> |
2806 | ||
ede2762d KT |
2807 | /* netdevice notifier chain. Please remember to update netdev_cmd_to_name() |
2808 | * and the rtnetlink notification exclusion list in rtnetlink_event() when | |
2809 | * adding new types. | |
dcfe1421 | 2810 | */ |
ede2762d KT |
2811 | enum netdev_cmd { |
2812 | NETDEV_UP = 1, /* For now you can't veto a device up/down */ | |
2813 | NETDEV_DOWN, | |
2814 | NETDEV_REBOOT, /* Tell a protocol stack a network interface | |
dcfe1421 AW |
2815 | detected a hardware crash and restarted |
2816 | - we can use this eg to kick tcp sessions | |
2817 | once done */ | |
ede2762d KT |
2818 | NETDEV_CHANGE, /* Notify device state change */ |
2819 | NETDEV_REGISTER, | |
2820 | NETDEV_UNREGISTER, | |
2821 | NETDEV_CHANGEMTU, /* notify after mtu change happened */ | |
1570415f PM |
2822 | NETDEV_CHANGEADDR, /* notify after the address change */ |
2823 | NETDEV_PRE_CHANGEADDR, /* notify before the address change */ | |
ede2762d KT |
2824 | NETDEV_GOING_DOWN, |
2825 | NETDEV_CHANGENAME, | |
2826 | NETDEV_FEAT_CHANGE, | |
2827 | NETDEV_BONDING_FAILOVER, | |
2828 | NETDEV_PRE_UP, | |
2829 | NETDEV_PRE_TYPE_CHANGE, | |
2830 | NETDEV_POST_TYPE_CHANGE, | |
2831 | NETDEV_POST_INIT, | |
02a68a47 | 2832 | NETDEV_PRE_UNINIT, |
ede2762d KT |
2833 | NETDEV_RELEASE, |
2834 | NETDEV_NOTIFY_PEERS, | |
2835 | NETDEV_JOIN, | |
2836 | NETDEV_CHANGEUPPER, | |
2837 | NETDEV_RESEND_IGMP, | |
2838 | NETDEV_PRECHANGEMTU, /* notify before mtu change happened */ | |
2839 | NETDEV_CHANGEINFODATA, | |
2840 | NETDEV_BONDING_INFO, | |
2841 | NETDEV_PRECHANGEUPPER, | |
2842 | NETDEV_CHANGELOWERSTATE, | |
2843 | NETDEV_UDP_TUNNEL_PUSH_INFO, | |
2844 | NETDEV_UDP_TUNNEL_DROP_INFO, | |
2845 | NETDEV_CHANGE_TX_QUEUE_LEN, | |
9daae9bd GP |
2846 | NETDEV_CVLAN_FILTER_PUSH_INFO, |
2847 | NETDEV_CVLAN_FILTER_DROP_INFO, | |
2848 | NETDEV_SVLAN_FILTER_PUSH_INFO, | |
2849 | NETDEV_SVLAN_FILTER_DROP_INFO, | |
9309f97a PM |
2850 | NETDEV_OFFLOAD_XSTATS_ENABLE, |
2851 | NETDEV_OFFLOAD_XSTATS_DISABLE, | |
2852 | NETDEV_OFFLOAD_XSTATS_REPORT_USED, | |
2853 | NETDEV_OFFLOAD_XSTATS_REPORT_DELTA, | |
d3d854fd | 2854 | NETDEV_XDP_FEAT_CHANGE, |
ede2762d KT |
2855 | }; |
2856 | const char *netdev_cmd_to_name(enum netdev_cmd cmd); | |
dcfe1421 | 2857 | |
f629d208 JP |
2858 | int register_netdevice_notifier(struct notifier_block *nb); |
2859 | int unregister_netdevice_notifier(struct notifier_block *nb); | |
a30c7b42 JP |
2860 | int register_netdevice_notifier_net(struct net *net, struct notifier_block *nb); |
2861 | int unregister_netdevice_notifier_net(struct net *net, | |
2862 | struct notifier_block *nb); | |
93642e14 JP |
2863 | int register_netdevice_notifier_dev_net(struct net_device *dev, |
2864 | struct notifier_block *nb, | |
2865 | struct netdev_net_notifier *nn); | |
2866 | int unregister_netdevice_notifier_dev_net(struct net_device *dev, | |
2867 | struct notifier_block *nb, | |
2868 | struct netdev_net_notifier *nn); | |
351638e7 JP |
2869 | |
2870 | struct netdev_notifier_info { | |
51d0c047 DA |
2871 | struct net_device *dev; |
2872 | struct netlink_ext_ack *extack; | |
351638e7 JP |
2873 | }; |
2874 | ||
af7d6cce SD |
2875 | struct netdev_notifier_info_ext { |
2876 | struct netdev_notifier_info info; /* must be first */ | |
2877 | union { | |
2878 | u32 mtu; | |
2879 | } ext; | |
2880 | }; | |
2881 | ||
be9efd36 JP |
2882 | struct netdev_notifier_change_info { |
2883 | struct netdev_notifier_info info; /* must be first */ | |
2884 | unsigned int flags_changed; | |
2885 | }; | |
2886 | ||
0e4ead9d JP |
2887 | struct netdev_notifier_changeupper_info { |
2888 | struct netdev_notifier_info info; /* must be first */ | |
2889 | struct net_device *upper_dev; /* new upper dev */ | |
2890 | bool master; /* is upper dev master */ | |
5e82b4b2 | 2891 | bool linking; /* is the notification for link or unlink */ |
29bf24af | 2892 | void *upper_info; /* upper dev info */ |
0e4ead9d JP |
2893 | }; |
2894 | ||
04d48266 JP |
2895 | struct netdev_notifier_changelowerstate_info { |
2896 | struct netdev_notifier_info info; /* must be first */ | |
2897 | void *lower_state_info; /* is lower dev state */ | |
2898 | }; | |
2899 | ||
1570415f PM |
2900 | struct netdev_notifier_pre_changeaddr_info { |
2901 | struct netdev_notifier_info info; /* must be first */ | |
2902 | const unsigned char *dev_addr; | |
2903 | }; | |
2904 | ||
9309f97a PM |
2905 | enum netdev_offload_xstats_type { |
2906 | NETDEV_OFFLOAD_XSTATS_TYPE_L3 = 1, | |
2907 | }; | |
2908 | ||
2909 | struct netdev_notifier_offload_xstats_info { | |
2910 | struct netdev_notifier_info info; /* must be first */ | |
2911 | enum netdev_offload_xstats_type type; | |
2912 | ||
2913 | union { | |
2914 | /* NETDEV_OFFLOAD_XSTATS_REPORT_DELTA */ | |
2915 | struct netdev_notifier_offload_xstats_rd *report_delta; | |
2916 | /* NETDEV_OFFLOAD_XSTATS_REPORT_USED */ | |
2917 | struct netdev_notifier_offload_xstats_ru *report_used; | |
2918 | }; | |
2919 | }; | |
2920 | ||
2921 | int netdev_offload_xstats_enable(struct net_device *dev, | |
2922 | enum netdev_offload_xstats_type type, | |
2923 | struct netlink_ext_ack *extack); | |
2924 | int netdev_offload_xstats_disable(struct net_device *dev, | |
2925 | enum netdev_offload_xstats_type type); | |
2926 | bool netdev_offload_xstats_enabled(const struct net_device *dev, | |
2927 | enum netdev_offload_xstats_type type); | |
2928 | int netdev_offload_xstats_get(struct net_device *dev, | |
2929 | enum netdev_offload_xstats_type type, | |
2930 | struct rtnl_hw_stats64 *stats, bool *used, | |
2931 | struct netlink_ext_ack *extack); | |
2932 | void | |
2933 | netdev_offload_xstats_report_delta(struct netdev_notifier_offload_xstats_rd *rd, | |
2934 | const struct rtnl_hw_stats64 *stats); | |
2935 | void | |
2936 | netdev_offload_xstats_report_used(struct netdev_notifier_offload_xstats_ru *ru); | |
2937 | void netdev_offload_xstats_push_delta(struct net_device *dev, | |
2938 | enum netdev_offload_xstats_type type, | |
2939 | const struct rtnl_hw_stats64 *stats); | |
2940 | ||
75538c2b CW |
2941 | static inline void netdev_notifier_info_init(struct netdev_notifier_info *info, |
2942 | struct net_device *dev) | |
2943 | { | |
2944 | info->dev = dev; | |
51d0c047 | 2945 | info->extack = NULL; |
75538c2b CW |
2946 | } |
2947 | ||
351638e7 JP |
2948 | static inline struct net_device * |
2949 | netdev_notifier_info_to_dev(const struct netdev_notifier_info *info) | |
2950 | { | |
2951 | return info->dev; | |
2952 | } | |
2953 | ||
51d0c047 DA |
2954 | static inline struct netlink_ext_ack * |
2955 | netdev_notifier_info_to_extack(const struct netdev_notifier_info *info) | |
2956 | { | |
2957 | return info->extack; | |
2958 | } | |
2959 | ||
f629d208 | 2960 | int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
dcfe1421 AW |
2961 | |
2962 | ||
1da177e4 LT |
2963 | extern rwlock_t dev_base_lock; /* Device list lock */ |
2964 | ||
881d966b EB |
2965 | #define for_each_netdev(net, d) \ |
2966 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
dcbccbd4 EB |
2967 | #define for_each_netdev_reverse(net, d) \ |
2968 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) | |
c6d14c84 ED |
2969 | #define for_each_netdev_rcu(net, d) \ |
2970 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b EB |
2971 | #define for_each_netdev_safe(net, d, n) \ |
2972 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
2973 | #define for_each_netdev_continue(net, d) \ | |
2974 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
afa0df59 JP |
2975 | #define for_each_netdev_continue_reverse(net, d) \ |
2976 | list_for_each_entry_continue_reverse(d, &(net)->dev_base_head, \ | |
2977 | dev_list) | |
254245d2 | 2978 | #define for_each_netdev_continue_rcu(net, d) \ |
2979 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) | |
8a7fbfab | 2980 | #define for_each_netdev_in_bond_rcu(bond, slave) \ |
2981 | for_each_netdev_rcu(&init_net, slave) \ | |
4ccce02e | 2982 | if (netdev_master_upper_dev_get_rcu(slave) == (bond)) |
881d966b | 2983 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
7562f876 | 2984 | |
a050c33f DL |
2985 | static inline struct net_device *next_net_device(struct net_device *dev) |
2986 | { | |
2987 | struct list_head *lh; | |
2988 | struct net *net; | |
2989 | ||
c346dca1 | 2990 | net = dev_net(dev); |
a050c33f DL |
2991 | lh = dev->dev_list.next; |
2992 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2993 | } | |
2994 | ||
ce81b76a ED |
2995 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
2996 | { | |
2997 | struct list_head *lh; | |
2998 | struct net *net; | |
2999 | ||
3000 | net = dev_net(dev); | |
ccf43438 | 3001 | lh = rcu_dereference(list_next_rcu(&dev->dev_list)); |
ce81b76a ED |
3002 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
3003 | } | |
3004 | ||
a050c33f DL |
3005 | static inline struct net_device *first_net_device(struct net *net) |
3006 | { | |
3007 | return list_empty(&net->dev_base_head) ? NULL : | |
3008 | net_device_entry(net->dev_base_head.next); | |
3009 | } | |
7562f876 | 3010 | |
ccf43438 ED |
3011 | static inline struct net_device *first_net_device_rcu(struct net *net) |
3012 | { | |
3013 | struct list_head *lh = rcu_dereference(list_next_rcu(&net->dev_base_head)); | |
3014 | ||
3015 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
3016 | } | |
3017 | ||
f629d208 | 3018 | int netdev_boot_setup_check(struct net_device *dev); |
f629d208 JP |
3019 | struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, |
3020 | const char *hwaddr); | |
3021 | struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
f629d208 JP |
3022 | void dev_add_pack(struct packet_type *pt); |
3023 | void dev_remove_pack(struct packet_type *pt); | |
3024 | void __dev_remove_pack(struct packet_type *pt); | |
3025 | void dev_add_offload(struct packet_offload *po); | |
3026 | void dev_remove_offload(struct packet_offload *po); | |
f629d208 | 3027 | |
a54acb3a | 3028 | int dev_get_iflink(const struct net_device *dev); |
fc4099f1 | 3029 | int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb); |
ddb94eaf PNA |
3030 | int dev_fill_forward_path(const struct net_device *dev, const u8 *daddr, |
3031 | struct net_device_path_stack *stack); | |
6c555490 WC |
3032 | struct net_device *__dev_get_by_flags(struct net *net, unsigned short flags, |
3033 | unsigned short mask); | |
f629d208 JP |
3034 | struct net_device *dev_get_by_name(struct net *net, const char *name); |
3035 | struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); | |
3036 | struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
75ea27d0 | 3037 | bool netdev_name_in_use(struct net *net, const char *name); |
f629d208 | 3038 | int dev_alloc_name(struct net_device *dev, const char *name); |
00f54e68 | 3039 | int dev_open(struct net_device *dev, struct netlink_ext_ack *extack); |
7051b88a | 3040 | void dev_close(struct net_device *dev); |
3041 | void dev_close_many(struct list_head *head, bool unlink); | |
f629d208 | 3042 | void dev_disable_lro(struct net_device *dev); |
0c4b51f0 | 3043 | int dev_loopback_xmit(struct net *net, struct sock *sk, struct sk_buff *newskb); |
a4ea8a3d | 3044 | u16 dev_pick_tx_zero(struct net_device *dev, struct sk_buff *skb, |
a350ecce | 3045 | struct net_device *sb_dev); |
a4ea8a3d | 3046 | u16 dev_pick_tx_cpu_id(struct net_device *dev, struct sk_buff *skb, |
a350ecce | 3047 | struct net_device *sb_dev); |
36ccdf85 | 3048 | |
c526fd8f | 3049 | int __dev_queue_xmit(struct sk_buff *skb, struct net_device *sb_dev); |
36ccdf85 BT |
3050 | int __dev_direct_xmit(struct sk_buff *skb, u16 queue_id); |
3051 | ||
c526fd8f PB |
3052 | static inline int dev_queue_xmit(struct sk_buff *skb) |
3053 | { | |
3054 | return __dev_queue_xmit(skb, NULL); | |
3055 | } | |
3056 | ||
3057 | static inline int dev_queue_xmit_accel(struct sk_buff *skb, | |
3058 | struct net_device *sb_dev) | |
3059 | { | |
3060 | return __dev_queue_xmit(skb, sb_dev); | |
3061 | } | |
3062 | ||
36ccdf85 BT |
3063 | static inline int dev_direct_xmit(struct sk_buff *skb, u16 queue_id) |
3064 | { | |
3065 | int ret; | |
3066 | ||
3067 | ret = __dev_direct_xmit(skb, queue_id); | |
3068 | if (!dev_xmit_complete(ret)) | |
3069 | kfree_skb(skb); | |
3070 | return ret; | |
3071 | } | |
3072 | ||
f629d208 JP |
3073 | int register_netdevice(struct net_device *dev); |
3074 | void unregister_netdevice_queue(struct net_device *dev, struct list_head *head); | |
3075 | void unregister_netdevice_many(struct list_head *head); | |
44a0873d ED |
3076 | static inline void unregister_netdevice(struct net_device *dev) |
3077 | { | |
3078 | unregister_netdevice_queue(dev, NULL); | |
3079 | } | |
3080 | ||
f629d208 JP |
3081 | int netdev_refcnt_read(const struct net_device *dev); |
3082 | void free_netdev(struct net_device *dev); | |
74d332c1 | 3083 | void netdev_freemem(struct net_device *dev); |
f629d208 | 3084 | int init_dummy_netdev(struct net_device *dev); |
937f1ba5 | 3085 | |
cff9f12b MG |
3086 | struct net_device *netdev_get_xmit_slave(struct net_device *dev, |
3087 | struct sk_buff *skb, | |
3088 | bool all_slaves); | |
719a402c TT |
3089 | struct net_device *netdev_sk_get_lowest_dev(struct net_device *dev, |
3090 | struct sock *sk); | |
f629d208 JP |
3091 | struct net_device *dev_get_by_index(struct net *net, int ifindex); |
3092 | struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
3093 | struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); | |
90b602f8 | 3094 | struct net_device *dev_get_by_napi_id(unsigned int napi_id); |
f629d208 | 3095 | int dev_restart(struct net_device *dev); |
86911732 | 3096 | |
5f114163 | 3097 | |
0c4e8581 SH |
3098 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
3099 | unsigned short type, | |
3b04ddde | 3100 | const void *daddr, const void *saddr, |
95c96174 | 3101 | unsigned int len) |
0c4e8581 | 3102 | { |
f1ecfd5d | 3103 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 3104 | return 0; |
3b04ddde SH |
3105 | |
3106 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
3107 | } |
3108 | ||
b95cce35 SH |
3109 | static inline int dev_parse_header(const struct sk_buff *skb, |
3110 | unsigned char *haddr) | |
3111 | { | |
3112 | const struct net_device *dev = skb->dev; | |
3113 | ||
1b83336b | 3114 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 3115 | return 0; |
3b04ddde | 3116 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
3117 | } |
3118 | ||
e78b2915 MM |
3119 | static inline __be16 dev_parse_header_protocol(const struct sk_buff *skb) |
3120 | { | |
3121 | const struct net_device *dev = skb->dev; | |
3122 | ||
3123 | if (!dev->header_ops || !dev->header_ops->parse_protocol) | |
3124 | return 0; | |
3125 | return dev->header_ops->parse_protocol(skb); | |
3126 | } | |
3127 | ||
2793a23a WB |
3128 | /* ll_header must have at least hard_header_len allocated */ |
3129 | static inline bool dev_validate_header(const struct net_device *dev, | |
3130 | char *ll_header, int len) | |
3131 | { | |
3132 | if (likely(len >= dev->hard_header_len)) | |
3133 | return true; | |
217e6fa2 WB |
3134 | if (len < dev->min_header_len) |
3135 | return false; | |
2793a23a WB |
3136 | |
3137 | if (capable(CAP_SYS_RAWIO)) { | |
3138 | memset(ll_header + len, 0, dev->hard_header_len - len); | |
3139 | return true; | |
3140 | } | |
3141 | ||
3142 | if (dev->header_ops && dev->header_ops->validate) | |
3143 | return dev->header_ops->validate(ll_header, len); | |
3144 | ||
3145 | return false; | |
3146 | } | |
3147 | ||
d5496990 EB |
3148 | static inline bool dev_has_header(const struct net_device *dev) |
3149 | { | |
3150 | return dev->header_ops && dev->header_ops->create; | |
3151 | } | |
3152 | ||
1da177e4 | 3153 | /* |
5e82b4b2 | 3154 | * Incoming packets are placed on per-CPU queues |
1da177e4 | 3155 | */ |
d94d9fee | 3156 | struct softnet_data { |
1da177e4 | 3157 | struct list_head poll_list; |
6e7676c1 | 3158 | struct sk_buff_head process_queue; |
1da177e4 | 3159 | |
dee42870 | 3160 | /* stats */ |
cd7b5396 DM |
3161 | unsigned int processed; |
3162 | unsigned int time_squeeze; | |
fd793d89 | 3163 | #ifdef CONFIG_RPS |
88751275 | 3164 | struct softnet_data *rps_ipi_list; |
4cdb1e2e ED |
3165 | #endif |
3166 | #ifdef CONFIG_NET_FLOW_LIMIT | |
3167 | struct sd_flow_limit __rcu *flow_limit; | |
3168 | #endif | |
3169 | struct Qdisc *output_queue; | |
3170 | struct Qdisc **output_queue_tailp; | |
3171 | struct sk_buff *completion_queue; | |
f53c7239 SK |
3172 | #ifdef CONFIG_XFRM_OFFLOAD |
3173 | struct sk_buff_head xfrm_backlog; | |
3174 | #endif | |
97cdcf37 FW |
3175 | /* written and read only by owning cpu: */ |
3176 | struct { | |
3177 | u16 recursion; | |
3178 | u8 more; | |
2f1e85b1 TZ |
3179 | #ifdef CONFIG_NET_EGRESS |
3180 | u8 skip_txqueue; | |
3181 | #endif | |
97cdcf37 | 3182 | } xmit; |
4cdb1e2e | 3183 | #ifdef CONFIG_RPS |
501e7ef5 ED |
3184 | /* input_queue_head should be written by cpu owning this struct, |
3185 | * and only read by other cpus. Worth using a cache line. | |
3186 | */ | |
3187 | unsigned int input_queue_head ____cacheline_aligned_in_smp; | |
3188 | ||
3189 | /* Elements below can be accessed between CPUs for RPS/RFS */ | |
966a9671 | 3190 | call_single_data_t csd ____cacheline_aligned_in_smp; |
88751275 ED |
3191 | struct softnet_data *rps_ipi_next; |
3192 | unsigned int cpu; | |
76cc8b13 | 3193 | unsigned int input_queue_tail; |
1e94d72f | 3194 | #endif |
14d898f3 | 3195 | unsigned int received_rps; |
95c96174 | 3196 | unsigned int dropped; |
0a9627f2 | 3197 | struct sk_buff_head input_pkt_queue; |
bea3348e | 3198 | struct napi_struct backlog; |
99bbc707 | 3199 | |
68822bdf ED |
3200 | /* Another possibly contended cache line */ |
3201 | spinlock_t defer_lock ____cacheline_aligned_in_smp; | |
3202 | int defer_count; | |
97e719a8 | 3203 | int defer_ipi_scheduled; |
68822bdf ED |
3204 | struct sk_buff *defer_list; |
3205 | call_single_data_t defer_csd; | |
1da177e4 LT |
3206 | }; |
3207 | ||
76cc8b13 | 3208 | static inline void input_queue_head_incr(struct softnet_data *sd) |
fec5e652 TH |
3209 | { |
3210 | #ifdef CONFIG_RPS | |
76cc8b13 TH |
3211 | sd->input_queue_head++; |
3212 | #endif | |
3213 | } | |
3214 | ||
3215 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, | |
3216 | unsigned int *qtail) | |
3217 | { | |
3218 | #ifdef CONFIG_RPS | |
3219 | *qtail = ++sd->input_queue_tail; | |
fec5e652 TH |
3220 | #endif |
3221 | } | |
3222 | ||
0a9627f2 | 3223 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
1da177e4 | 3224 | |
97cdcf37 FW |
3225 | static inline int dev_recursion_level(void) |
3226 | { | |
28b05b92 | 3227 | return this_cpu_read(softnet_data.xmit.recursion); |
97cdcf37 FW |
3228 | } |
3229 | ||
fb7861d1 | 3230 | #define XMIT_RECURSION_LIMIT 8 |
97cdcf37 FW |
3231 | static inline bool dev_xmit_recursion(void) |
3232 | { | |
3233 | return unlikely(__this_cpu_read(softnet_data.xmit.recursion) > | |
3234 | XMIT_RECURSION_LIMIT); | |
3235 | } | |
3236 | ||
3237 | static inline void dev_xmit_recursion_inc(void) | |
3238 | { | |
3239 | __this_cpu_inc(softnet_data.xmit.recursion); | |
3240 | } | |
3241 | ||
3242 | static inline void dev_xmit_recursion_dec(void) | |
3243 | { | |
3244 | __this_cpu_dec(softnet_data.xmit.recursion); | |
3245 | } | |
3246 | ||
f629d208 | 3247 | void __netif_schedule(struct Qdisc *q); |
46e5da40 | 3248 | void netif_schedule_queue(struct netdev_queue *txq); |
86d804e1 | 3249 | |
fd2ea0a7 DM |
3250 | static inline void netif_tx_schedule_all(struct net_device *dev) |
3251 | { | |
3252 | unsigned int i; | |
3253 | ||
3254 | for (i = 0; i < dev->num_tx_queues; i++) | |
3255 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
3256 | } | |
3257 | ||
f9a7cbbf | 3258 | static __always_inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
d29f749e | 3259 | { |
73466498 | 3260 | clear_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3261 | } |
3262 | ||
bea3348e SH |
3263 | /** |
3264 | * netif_start_queue - allow transmit | |
3265 | * @dev: network device | |
3266 | * | |
3267 | * Allow upper layers to call the device hard_start_xmit routine. | |
3268 | */ | |
1da177e4 LT |
3269 | static inline void netif_start_queue(struct net_device *dev) |
3270 | { | |
e8a0464c | 3271 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3272 | } |
3273 | ||
fd2ea0a7 DM |
3274 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
3275 | { | |
3276 | unsigned int i; | |
3277 | ||
3278 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3279 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
3280 | netif_tx_start_queue(txq); | |
3281 | } | |
3282 | } | |
3283 | ||
46e5da40 | 3284 | void netif_tx_wake_queue(struct netdev_queue *dev_queue); |
79d16385 | 3285 | |
d29f749e DJ |
3286 | /** |
3287 | * netif_wake_queue - restart transmit | |
3288 | * @dev: network device | |
3289 | * | |
3290 | * Allow upper layers to call the device hard_start_xmit routine. | |
3291 | * Used for flow control when transmit resources are available. | |
3292 | */ | |
79d16385 DM |
3293 | static inline void netif_wake_queue(struct net_device *dev) |
3294 | { | |
e8a0464c | 3295 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3296 | } |
3297 | ||
fd2ea0a7 DM |
3298 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
3299 | { | |
3300 | unsigned int i; | |
3301 | ||
3302 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3303 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
3304 | netif_tx_wake_queue(txq); | |
3305 | } | |
3306 | } | |
3307 | ||
f9a7cbbf | 3308 | static __always_inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
d29f749e | 3309 | { |
73466498 | 3310 | set_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3311 | } |
3312 | ||
bea3348e SH |
3313 | /** |
3314 | * netif_stop_queue - stop transmitted packets | |
3315 | * @dev: network device | |
3316 | * | |
3317 | * Stop upper layers calling the device hard_start_xmit routine. | |
3318 | * Used for flow control when transmit resources are unavailable. | |
3319 | */ | |
1da177e4 LT |
3320 | static inline void netif_stop_queue(struct net_device *dev) |
3321 | { | |
e8a0464c | 3322 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3323 | } |
3324 | ||
a2029240 | 3325 | void netif_tx_stop_all_queues(struct net_device *dev); |
fd2ea0a7 | 3326 | |
4d29515f | 3327 | static inline bool netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
d29f749e | 3328 | { |
73466498 | 3329 | return test_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3330 | } |
3331 | ||
bea3348e SH |
3332 | /** |
3333 | * netif_queue_stopped - test if transmit queue is flowblocked | |
3334 | * @dev: network device | |
3335 | * | |
3336 | * Test if transmit queue on device is currently unable to send. | |
3337 | */ | |
4d29515f | 3338 | static inline bool netif_queue_stopped(const struct net_device *dev) |
1da177e4 | 3339 | { |
e8a0464c | 3340 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3341 | } |
3342 | ||
4d29515f | 3343 | static inline bool netif_xmit_stopped(const struct netdev_queue *dev_queue) |
c3f26a26 | 3344 | { |
73466498 TH |
3345 | return dev_queue->state & QUEUE_STATE_ANY_XOFF; |
3346 | } | |
3347 | ||
8e2f1a63 DB |
3348 | static inline bool |
3349 | netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue) | |
73466498 TH |
3350 | { |
3351 | return dev_queue->state & QUEUE_STATE_ANY_XOFF_OR_FROZEN; | |
3352 | } | |
3353 | ||
8e2f1a63 DB |
3354 | static inline bool |
3355 | netif_xmit_frozen_or_drv_stopped(const struct netdev_queue *dev_queue) | |
3356 | { | |
3357 | return dev_queue->state & QUEUE_STATE_DRV_XOFF_OR_FROZEN; | |
3358 | } | |
3359 | ||
f57bac3c VM |
3360 | /** |
3361 | * netdev_queue_set_dql_min_limit - set dql minimum limit | |
3362 | * @dev_queue: pointer to transmit queue | |
3363 | * @min_limit: dql minimum limit | |
3364 | * | |
3365 | * Forces xmit_more() to return true until the minimum threshold | |
3366 | * defined by @min_limit is reached (or until the tx queue is | |
3367 | * empty). Warning: to be use with care, misuse will impact the | |
3368 | * latency. | |
3369 | */ | |
3370 | static inline void netdev_queue_set_dql_min_limit(struct netdev_queue *dev_queue, | |
3371 | unsigned int min_limit) | |
3372 | { | |
3373 | #ifdef CONFIG_BQL | |
3374 | dev_queue->dql.min_limit = min_limit; | |
3375 | #endif | |
3376 | } | |
3377 | ||
53511453 ED |
3378 | /** |
3379 | * netdev_txq_bql_enqueue_prefetchw - prefetch bql data for write | |
3380 | * @dev_queue: pointer to transmit queue | |
3381 | * | |
3382 | * BQL enabled drivers might use this helper in their ndo_start_xmit(), | |
5e82b4b2 | 3383 | * to give appropriate hint to the CPU. |
53511453 ED |
3384 | */ |
3385 | static inline void netdev_txq_bql_enqueue_prefetchw(struct netdev_queue *dev_queue) | |
3386 | { | |
3387 | #ifdef CONFIG_BQL | |
3388 | prefetchw(&dev_queue->dql.num_queued); | |
3389 | #endif | |
3390 | } | |
3391 | ||
3392 | /** | |
3393 | * netdev_txq_bql_complete_prefetchw - prefetch bql data for write | |
3394 | * @dev_queue: pointer to transmit queue | |
3395 | * | |
3396 | * BQL enabled drivers might use this helper in their TX completion path, | |
5e82b4b2 | 3397 | * to give appropriate hint to the CPU. |
53511453 ED |
3398 | */ |
3399 | static inline void netdev_txq_bql_complete_prefetchw(struct netdev_queue *dev_queue) | |
3400 | { | |
3401 | #ifdef CONFIG_BQL | |
3402 | prefetchw(&dev_queue->dql.limit); | |
3403 | #endif | |
3404 | } | |
3405 | ||
977f1aa5 ED |
3406 | /** |
3407 | * netdev_tx_sent_queue - report the number of bytes queued to a given tx queue | |
3408 | * @dev_queue: network device queue | |
3409 | * @bytes: number of bytes queued to the device queue | |
3410 | * | |
3411 | * Report the number of bytes queued for sending/completion to the network | |
3412 | * device hardware queue. @bytes should be a good approximation and should | |
3413 | * exactly match netdev_completed_queue() @bytes. | |
3414 | * This is typically called once per packet, from ndo_start_xmit(). | |
3415 | */ | |
c5d67bd7 TH |
3416 | static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, |
3417 | unsigned int bytes) | |
3418 | { | |
114cf580 TH |
3419 | #ifdef CONFIG_BQL |
3420 | dql_queued(&dev_queue->dql, bytes); | |
b37c0fbe AD |
3421 | |
3422 | if (likely(dql_avail(&dev_queue->dql) >= 0)) | |
3423 | return; | |
3424 | ||
3425 | set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
3426 | ||
3427 | /* | |
3428 | * The XOFF flag must be set before checking the dql_avail below, | |
3429 | * because in netdev_tx_completed_queue we update the dql_completed | |
3430 | * before checking the XOFF flag. | |
3431 | */ | |
3432 | smp_mb(); | |
3433 | ||
3434 | /* check again in case another CPU has just made room avail */ | |
3435 | if (unlikely(dql_avail(&dev_queue->dql) >= 0)) | |
3436 | clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
114cf580 | 3437 | #endif |
c5d67bd7 TH |
3438 | } |
3439 | ||
3e59020a ED |
3440 | /* Variant of netdev_tx_sent_queue() for drivers that are aware |
3441 | * that they should not test BQL status themselves. | |
3442 | * We do want to change __QUEUE_STATE_STACK_XOFF only for the last | |
3443 | * skb of a batch. | |
3444 | * Returns true if the doorbell must be used to kick the NIC. | |
3445 | */ | |
3446 | static inline bool __netdev_tx_sent_queue(struct netdev_queue *dev_queue, | |
3447 | unsigned int bytes, | |
3448 | bool xmit_more) | |
3449 | { | |
3450 | if (xmit_more) { | |
3451 | #ifdef CONFIG_BQL | |
3452 | dql_queued(&dev_queue->dql, bytes); | |
3453 | #endif | |
3454 | return netif_tx_queue_stopped(dev_queue); | |
3455 | } | |
3456 | netdev_tx_sent_queue(dev_queue, bytes); | |
3457 | return true; | |
3458 | } | |
3459 | ||
0042d0c8 | 3460 | /** |
977f1aa5 ED |
3461 | * netdev_sent_queue - report the number of bytes queued to hardware |
3462 | * @dev: network device | |
3463 | * @bytes: number of bytes queued to the hardware device queue | |
0042d0c8 | 3464 | * |
977f1aa5 ED |
3465 | * Report the number of bytes queued for sending/completion to the network |
3466 | * device hardware queue#0. @bytes should be a good approximation and should | |
3467 | * exactly match netdev_completed_queue() @bytes. | |
3468 | * This is typically called once per packet, from ndo_start_xmit(). | |
0042d0c8 | 3469 | */ |
c5d67bd7 TH |
3470 | static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes) |
3471 | { | |
3472 | netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes); | |
3473 | } | |
3474 | ||
620344c4 HK |
3475 | static inline bool __netdev_sent_queue(struct net_device *dev, |
3476 | unsigned int bytes, | |
3477 | bool xmit_more) | |
3478 | { | |
3479 | return __netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes, | |
3480 | xmit_more); | |
3481 | } | |
3482 | ||
977f1aa5 ED |
3483 | /** |
3484 | * netdev_tx_completed_queue - report number of packets/bytes at TX completion. | |
3485 | * @dev_queue: network device queue | |
3486 | * @pkts: number of packets (currently ignored) | |
3487 | * @bytes: number of bytes dequeued from the device queue | |
3488 | * | |
3489 | * Must be called at most once per TX completion round (and not per | |
3490 | * individual packet), so that BQL can adjust its limits appropriately. | |
3491 | */ | |
c5d67bd7 | 3492 | static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue, |
95c96174 | 3493 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 | 3494 | { |
114cf580 | 3495 | #ifdef CONFIG_BQL |
b37c0fbe AD |
3496 | if (unlikely(!bytes)) |
3497 | return; | |
3498 | ||
3499 | dql_completed(&dev_queue->dql, bytes); | |
3500 | ||
3501 | /* | |
3502 | * Without the memory barrier there is a small possiblity that | |
3503 | * netdev_tx_sent_queue will miss the update and cause the queue to | |
3504 | * be stopped forever | |
3505 | */ | |
3506 | smp_mb(); | |
3507 | ||
f3acd33d | 3508 | if (unlikely(dql_avail(&dev_queue->dql) < 0)) |
b37c0fbe AD |
3509 | return; |
3510 | ||
3511 | if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state)) | |
3512 | netif_schedule_queue(dev_queue); | |
114cf580 | 3513 | #endif |
c5d67bd7 TH |
3514 | } |
3515 | ||
0042d0c8 FF |
3516 | /** |
3517 | * netdev_completed_queue - report bytes and packets completed by device | |
3518 | * @dev: network device | |
3519 | * @pkts: actual number of packets sent over the medium | |
3520 | * @bytes: actual number of bytes sent over the medium | |
3521 | * | |
3522 | * Report the number of bytes and packets transmitted by the network device | |
3523 | * hardware queue over the physical medium, @bytes must exactly match the | |
3524 | * @bytes amount passed to netdev_sent_queue() | |
3525 | */ | |
c5d67bd7 | 3526 | static inline void netdev_completed_queue(struct net_device *dev, |
95c96174 | 3527 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 TH |
3528 | { |
3529 | netdev_tx_completed_queue(netdev_get_tx_queue(dev, 0), pkts, bytes); | |
3530 | } | |
3531 | ||
3532 | static inline void netdev_tx_reset_queue(struct netdev_queue *q) | |
3533 | { | |
114cf580 | 3534 | #ifdef CONFIG_BQL |
5c490354 | 3535 | clear_bit(__QUEUE_STATE_STACK_XOFF, &q->state); |
114cf580 TH |
3536 | dql_reset(&q->dql); |
3537 | #endif | |
c5d67bd7 TH |
3538 | } |
3539 | ||
0042d0c8 FF |
3540 | /** |
3541 | * netdev_reset_queue - reset the packets and bytes count of a network device | |
3542 | * @dev_queue: network device | |
3543 | * | |
3544 | * Reset the bytes and packet count of a network device and clear the | |
3545 | * software flow control OFF bit for this network device | |
3546 | */ | |
c5d67bd7 TH |
3547 | static inline void netdev_reset_queue(struct net_device *dev_queue) |
3548 | { | |
3549 | netdev_tx_reset_queue(netdev_get_tx_queue(dev_queue, 0)); | |
c3f26a26 DM |
3550 | } |
3551 | ||
b9507bda DB |
3552 | /** |
3553 | * netdev_cap_txqueue - check if selected tx queue exceeds device queues | |
3554 | * @dev: network device | |
3555 | * @queue_index: given tx queue index | |
3556 | * | |
3557 | * Returns 0 if given tx queue index >= number of device tx queues, | |
3558 | * otherwise returns the originally passed tx queue index. | |
3559 | */ | |
3560 | static inline u16 netdev_cap_txqueue(struct net_device *dev, u16 queue_index) | |
3561 | { | |
3562 | if (unlikely(queue_index >= dev->real_num_tx_queues)) { | |
3563 | net_warn_ratelimited("%s selects TX queue %d, but real number of TX queues is %d\n", | |
3564 | dev->name, queue_index, | |
3565 | dev->real_num_tx_queues); | |
3566 | return 0; | |
3567 | } | |
3568 | ||
3569 | return queue_index; | |
3570 | } | |
3571 | ||
bea3348e SH |
3572 | /** |
3573 | * netif_running - test if up | |
3574 | * @dev: network device | |
3575 | * | |
3576 | * Test if the device has been brought up. | |
3577 | */ | |
4d29515f | 3578 | static inline bool netif_running(const struct net_device *dev) |
1da177e4 LT |
3579 | { |
3580 | return test_bit(__LINK_STATE_START, &dev->state); | |
3581 | } | |
3582 | ||
f25f4e44 | 3583 | /* |
5e82b4b2 | 3584 | * Routines to manage the subqueues on a device. We only need start, |
f25f4e44 PWJ |
3585 | * stop, and a check if it's stopped. All other device management is |
3586 | * done at the overall netdevice level. | |
3587 | * Also test the device if we're multiqueue. | |
3588 | */ | |
bea3348e SH |
3589 | |
3590 | /** | |
3591 | * netif_start_subqueue - allow sending packets on subqueue | |
3592 | * @dev: network device | |
3593 | * @queue_index: sub queue index | |
3594 | * | |
3595 | * Start individual transmit queue of a device with multiple transmit queues. | |
3596 | */ | |
f25f4e44 PWJ |
3597 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
3598 | { | |
fd2ea0a7 | 3599 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3600 | |
3601 | netif_tx_start_queue(txq); | |
f25f4e44 PWJ |
3602 | } |
3603 | ||
bea3348e SH |
3604 | /** |
3605 | * netif_stop_subqueue - stop sending packets on subqueue | |
3606 | * @dev: network device | |
3607 | * @queue_index: sub queue index | |
3608 | * | |
3609 | * Stop individual transmit queue of a device with multiple transmit queues. | |
3610 | */ | |
f25f4e44 PWJ |
3611 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
3612 | { | |
fd2ea0a7 | 3613 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f | 3614 | netif_tx_stop_queue(txq); |
f25f4e44 PWJ |
3615 | } |
3616 | ||
bea3348e | 3617 | /** |
270f3385 | 3618 | * __netif_subqueue_stopped - test status of subqueue |
bea3348e SH |
3619 | * @dev: network device |
3620 | * @queue_index: sub queue index | |
3621 | * | |
3622 | * Check individual transmit queue of a device with multiple transmit queues. | |
3623 | */ | |
4d29515f DM |
3624 | static inline bool __netif_subqueue_stopped(const struct net_device *dev, |
3625 | u16 queue_index) | |
f25f4e44 | 3626 | { |
fd2ea0a7 | 3627 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3628 | |
3629 | return netif_tx_queue_stopped(txq); | |
f25f4e44 PWJ |
3630 | } |
3631 | ||
270f3385 MCC |
3632 | /** |
3633 | * netif_subqueue_stopped - test status of subqueue | |
3634 | * @dev: network device | |
3635 | * @skb: sub queue buffer pointer | |
3636 | * | |
3637 | * Check individual transmit queue of a device with multiple transmit queues. | |
3638 | */ | |
4d29515f DM |
3639 | static inline bool netif_subqueue_stopped(const struct net_device *dev, |
3640 | struct sk_buff *skb) | |
668f895a PE |
3641 | { |
3642 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
3643 | } | |
bea3348e | 3644 | |
738b35cc FF |
3645 | /** |
3646 | * netif_wake_subqueue - allow sending packets on subqueue | |
3647 | * @dev: network device | |
3648 | * @queue_index: sub queue index | |
3649 | * | |
3650 | * Resume individual transmit queue of a device with multiple transmit queues. | |
3651 | */ | |
3652 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) | |
3653 | { | |
3654 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); | |
3655 | ||
3656 | netif_tx_wake_queue(txq); | |
3657 | } | |
f25f4e44 | 3658 | |
537c00de | 3659 | #ifdef CONFIG_XPS |
53af53ae | 3660 | int netif_set_xps_queue(struct net_device *dev, const struct cpumask *mask, |
f629d208 | 3661 | u16 index); |
80d19669 | 3662 | int __netif_set_xps_queue(struct net_device *dev, const unsigned long *mask, |
044ab86d | 3663 | u16 index, enum xps_map_type type); |
80d19669 AN |
3664 | |
3665 | /** | |
3666 | * netif_attr_test_mask - Test a CPU or Rx queue set in a mask | |
3667 | * @j: CPU/Rx queue index | |
3668 | * @mask: bitmask of all cpus/rx queues | |
3669 | * @nr_bits: number of bits in the bitmask | |
3670 | * | |
3671 | * Test if a CPU or Rx queue index is set in a mask of all CPU/Rx queues. | |
3672 | */ | |
3673 | static inline bool netif_attr_test_mask(unsigned long j, | |
3674 | const unsigned long *mask, | |
3675 | unsigned int nr_bits) | |
3676 | { | |
3677 | cpu_max_bits_warn(j, nr_bits); | |
3678 | return test_bit(j, mask); | |
3679 | } | |
3680 | ||
3681 | /** | |
3682 | * netif_attr_test_online - Test for online CPU/Rx queue | |
3683 | * @j: CPU/Rx queue index | |
3684 | * @online_mask: bitmask for CPUs/Rx queues that are online | |
3685 | * @nr_bits: number of bits in the bitmask | |
3686 | * | |
3687 | * Returns true if a CPU/Rx queue is online. | |
3688 | */ | |
3689 | static inline bool netif_attr_test_online(unsigned long j, | |
3690 | const unsigned long *online_mask, | |
3691 | unsigned int nr_bits) | |
3692 | { | |
3693 | cpu_max_bits_warn(j, nr_bits); | |
3694 | ||
3695 | if (online_mask) | |
3696 | return test_bit(j, online_mask); | |
3697 | ||
3698 | return (j < nr_bits); | |
3699 | } | |
3700 | ||
3701 | /** | |
3702 | * netif_attrmask_next - get the next CPU/Rx queue in a cpu/Rx queues mask | |
3703 | * @n: CPU/Rx queue index | |
3704 | * @srcp: the cpumask/Rx queue mask pointer | |
3705 | * @nr_bits: number of bits in the bitmask | |
3706 | * | |
3707 | * Returns >= nr_bits if no further CPUs/Rx queues set. | |
3708 | */ | |
3709 | static inline unsigned int netif_attrmask_next(int n, const unsigned long *srcp, | |
3710 | unsigned int nr_bits) | |
3711 | { | |
fc8695eb JK |
3712 | /* -1 is a legal arg here. */ |
3713 | if (n != -1) | |
3714 | cpu_max_bits_warn(n, nr_bits); | |
80d19669 AN |
3715 | |
3716 | if (srcp) | |
3717 | return find_next_bit(srcp, nr_bits, n + 1); | |
3718 | ||
3719 | return n + 1; | |
3720 | } | |
3721 | ||
3722 | /** | |
a1fa83bd | 3723 | * netif_attrmask_next_and - get the next CPU/Rx queue in \*src1p & \*src2p |
80d19669 AN |
3724 | * @n: CPU/Rx queue index |
3725 | * @src1p: the first CPUs/Rx queues mask pointer | |
3726 | * @src2p: the second CPUs/Rx queues mask pointer | |
3727 | * @nr_bits: number of bits in the bitmask | |
3728 | * | |
3729 | * Returns >= nr_bits if no further CPUs/Rx queues set in both. | |
3730 | */ | |
3731 | static inline int netif_attrmask_next_and(int n, const unsigned long *src1p, | |
3732 | const unsigned long *src2p, | |
3733 | unsigned int nr_bits) | |
3734 | { | |
fc8695eb JK |
3735 | /* -1 is a legal arg here. */ |
3736 | if (n != -1) | |
3737 | cpu_max_bits_warn(n, nr_bits); | |
80d19669 AN |
3738 | |
3739 | if (src1p && src2p) | |
3740 | return find_next_and_bit(src1p, src2p, nr_bits, n + 1); | |
3741 | else if (src1p) | |
3742 | return find_next_bit(src1p, nr_bits, n + 1); | |
3743 | else if (src2p) | |
3744 | return find_next_bit(src2p, nr_bits, n + 1); | |
3745 | ||
3746 | return n + 1; | |
3747 | } | |
537c00de AD |
3748 | #else |
3749 | static inline int netif_set_xps_queue(struct net_device *dev, | |
3573540c | 3750 | const struct cpumask *mask, |
537c00de AD |
3751 | u16 index) |
3752 | { | |
3753 | return 0; | |
3754 | } | |
c9fbb2d2 KK |
3755 | |
3756 | static inline int __netif_set_xps_queue(struct net_device *dev, | |
3757 | const unsigned long *mask, | |
044ab86d | 3758 | u16 index, enum xps_map_type type) |
c9fbb2d2 KK |
3759 | { |
3760 | return 0; | |
3761 | } | |
537c00de AD |
3762 | #endif |
3763 | ||
bea3348e SH |
3764 | /** |
3765 | * netif_is_multiqueue - test if device has multiple transmit queues | |
3766 | * @dev: network device | |
3767 | * | |
3768 | * Check if device has multiple transmit queues | |
bea3348e | 3769 | */ |
4d29515f | 3770 | static inline bool netif_is_multiqueue(const struct net_device *dev) |
f25f4e44 | 3771 | { |
a02cec21 | 3772 | return dev->num_tx_queues > 1; |
f25f4e44 | 3773 | } |
1da177e4 | 3774 | |
f629d208 | 3775 | int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq); |
f0796d5c | 3776 | |
a953be53 | 3777 | #ifdef CONFIG_SYSFS |
f629d208 | 3778 | int netif_set_real_num_rx_queues(struct net_device *dev, unsigned int rxq); |
62fe0b40 BH |
3779 | #else |
3780 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, | |
c29c2ebd | 3781 | unsigned int rxqs) |
62fe0b40 | 3782 | { |
c29c2ebd | 3783 | dev->real_num_rx_queues = rxqs; |
62fe0b40 BH |
3784 | return 0; |
3785 | } | |
3786 | #endif | |
271e5b7d JK |
3787 | int netif_set_real_num_queues(struct net_device *dev, |
3788 | unsigned int txq, unsigned int rxq); | |
62fe0b40 | 3789 | |
65073a67 DB |
3790 | static inline struct netdev_rx_queue * |
3791 | __netif_get_rx_queue(struct net_device *dev, unsigned int rxq) | |
3792 | { | |
3793 | return dev->_rx + rxq; | |
3794 | } | |
3795 | ||
a953be53 MD |
3796 | #ifdef CONFIG_SYSFS |
3797 | static inline unsigned int get_netdev_rx_queue_index( | |
3798 | struct netdev_rx_queue *queue) | |
3799 | { | |
3800 | struct net_device *dev = queue->dev; | |
3801 | int index = queue - dev->_rx; | |
3802 | ||
3803 | BUG_ON(index >= dev->num_rx_queues); | |
3804 | return index; | |
3805 | } | |
3806 | #endif | |
3807 | ||
f629d208 | 3808 | int netif_get_num_default_rss_queues(void); |
16917b87 | 3809 | |
e6247027 ED |
3810 | enum skb_free_reason { |
3811 | SKB_REASON_CONSUMED, | |
3812 | SKB_REASON_DROPPED, | |
3813 | }; | |
3814 | ||
3815 | void __dev_kfree_skb_irq(struct sk_buff *skb, enum skb_free_reason reason); | |
3816 | void __dev_kfree_skb_any(struct sk_buff *skb, enum skb_free_reason reason); | |
1da177e4 | 3817 | |
e6247027 ED |
3818 | /* |
3819 | * It is not allowed to call kfree_skb() or consume_skb() from hardware | |
3820 | * interrupt context or with hardware interrupts being disabled. | |
afa79d08 | 3821 | * (in_hardirq() || irqs_disabled()) |
e6247027 ED |
3822 | * |
3823 | * We provide four helpers that can be used in following contexts : | |
3824 | * | |
3825 | * dev_kfree_skb_irq(skb) when caller drops a packet from irq context, | |
3826 | * replacing kfree_skb(skb) | |
3827 | * | |
3828 | * dev_consume_skb_irq(skb) when caller consumes a packet from irq context. | |
3829 | * Typically used in place of consume_skb(skb) in TX completion path | |
3830 | * | |
3831 | * dev_kfree_skb_any(skb) when caller doesn't know its current irq context, | |
3832 | * replacing kfree_skb(skb) | |
3833 | * | |
3834 | * dev_consume_skb_any(skb) when caller doesn't know its current irq context, | |
3835 | * and consumed a packet. Used in place of consume_skb(skb) | |
1da177e4 | 3836 | */ |
e6247027 ED |
3837 | static inline void dev_kfree_skb_irq(struct sk_buff *skb) |
3838 | { | |
3839 | __dev_kfree_skb_irq(skb, SKB_REASON_DROPPED); | |
3840 | } | |
3841 | ||
3842 | static inline void dev_consume_skb_irq(struct sk_buff *skb) | |
3843 | { | |
3844 | __dev_kfree_skb_irq(skb, SKB_REASON_CONSUMED); | |
3845 | } | |
3846 | ||
3847 | static inline void dev_kfree_skb_any(struct sk_buff *skb) | |
3848 | { | |
3849 | __dev_kfree_skb_any(skb, SKB_REASON_DROPPED); | |
3850 | } | |
3851 | ||
3852 | static inline void dev_consume_skb_any(struct sk_buff *skb) | |
3853 | { | |
3854 | __dev_kfree_skb_any(skb, SKB_REASON_CONSUMED); | |
3855 | } | |
1da177e4 | 3856 | |
fe21cb91 KKD |
3857 | u32 bpf_prog_run_generic_xdp(struct sk_buff *skb, struct xdp_buff *xdp, |
3858 | struct bpf_prog *xdp_prog); | |
7c497478 JW |
3859 | void generic_xdp_tx(struct sk_buff *skb, struct bpf_prog *xdp_prog); |
3860 | int do_xdp_generic(struct bpf_prog *xdp_prog, struct sk_buff *skb); | |
f629d208 | 3861 | int netif_rx(struct sk_buff *skb); |
baebdf48 SAS |
3862 | int __netif_rx(struct sk_buff *skb); |
3863 | ||
04eb4489 | 3864 | int netif_receive_skb(struct sk_buff *skb); |
1c601d82 | 3865 | int netif_receive_skb_core(struct sk_buff *skb); |
587652bb | 3866 | void netif_receive_skb_list_internal(struct list_head *head); |
f6ad8c1b | 3867 | void netif_receive_skb_list(struct list_head *head); |
f629d208 JP |
3868 | gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb); |
3869 | void napi_gro_flush(struct napi_struct *napi, bool flush_old); | |
3870 | struct sk_buff *napi_get_frags(struct napi_struct *napi); | |
dbae2b06 | 3871 | void napi_get_frags_check(struct napi_struct *napi); |
f629d208 | 3872 | gro_result_t napi_gro_frags(struct napi_struct *napi); |
bf5a755f JC |
3873 | struct packet_offload *gro_find_receive_by_type(__be16 type); |
3874 | struct packet_offload *gro_find_complete_by_type(__be16 type); | |
76620aaf HX |
3875 | |
3876 | static inline void napi_free_frags(struct napi_struct *napi) | |
3877 | { | |
3878 | kfree_skb(napi->skb); | |
3879 | napi->skb = NULL; | |
3880 | } | |
3881 | ||
24b27fc4 | 3882 | bool netdev_is_rx_handler_busy(struct net_device *dev); |
f629d208 JP |
3883 | int netdev_rx_handler_register(struct net_device *dev, |
3884 | rx_handler_func_t *rx_handler, | |
3885 | void *rx_handler_data); | |
3886 | void netdev_rx_handler_unregister(struct net_device *dev); | |
3887 | ||
3888 | bool dev_valid_name(const char *name); | |
d0efb162 PC |
3889 | static inline bool is_socket_ioctl_cmd(unsigned int cmd) |
3890 | { | |
3891 | return _IOC_TYPE(cmd) == SOCK_IOC_TYPE; | |
3892 | } | |
29c49648 AB |
3893 | int get_user_ifreq(struct ifreq *ifr, void __user **ifrdata, void __user *arg); |
3894 | int put_user_ifreq(struct ifreq *ifr, void __user *arg); | |
44c02a2c | 3895 | int dev_ioctl(struct net *net, unsigned int cmd, struct ifreq *ifr, |
a554bf96 | 3896 | void __user *data, bool *need_copyout); |
876f0bf9 | 3897 | int dev_ifconf(struct net *net, struct ifconf __user *ifc); |
a554bf96 | 3898 | int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *userdata); |
f629d208 | 3899 | unsigned int dev_get_flags(const struct net_device *); |
6d040321 PM |
3900 | int __dev_change_flags(struct net_device *dev, unsigned int flags, |
3901 | struct netlink_ext_ack *extack); | |
567c5e13 PM |
3902 | int dev_change_flags(struct net_device *dev, unsigned int flags, |
3903 | struct netlink_ext_ack *extack); | |
f629d208 | 3904 | int dev_set_alias(struct net_device *, const char *, size_t); |
6c557001 | 3905 | int dev_get_alias(const struct net_device *, char *, size_t); |
0854fa82 AV |
3906 | int __dev_change_net_namespace(struct net_device *dev, struct net *net, |
3907 | const char *pat, int new_ifindex); | |
3908 | static inline | |
eeb85a14 | 3909 | int dev_change_net_namespace(struct net_device *dev, struct net *net, |
0854fa82 AV |
3910 | const char *pat) |
3911 | { | |
3912 | return __dev_change_net_namespace(dev, net, pat, 0); | |
3913 | } | |
f51048c3 | 3914 | int __dev_set_mtu(struct net_device *, int); |
f629d208 | 3915 | int dev_set_mtu(struct net_device *, int); |
d59cdf94 PM |
3916 | int dev_pre_changeaddr_notify(struct net_device *dev, const char *addr, |
3917 | struct netlink_ext_ack *extack); | |
3a37a963 PM |
3918 | int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa, |
3919 | struct netlink_ext_ack *extack); | |
3b23a32a CW |
3920 | int dev_set_mac_address_user(struct net_device *dev, struct sockaddr *sa, |
3921 | struct netlink_ext_ack *extack); | |
3922 | int dev_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name); | |
d6abc596 FF |
3923 | int dev_get_port_parent_id(struct net_device *dev, |
3924 | struct netdev_phys_item_id *ppid, bool recurse); | |
3925 | bool netdev_port_same_parent_id(struct net_device *a, struct net_device *b); | |
f53c7239 | 3926 | struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev, bool *again); |
ce93718f DM |
3927 | struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, |
3928 | struct netdev_queue *txq, int *ret); | |
d67b9cd2 | 3929 | |
aa8d3a71 | 3930 | int bpf_xdp_link_attach(const union bpf_attr *attr, struct bpf_prog *prog); |
879af96f | 3931 | u8 dev_xdp_prog_count(struct net_device *dev); |
7f0a8382 | 3932 | u32 dev_xdp_prog_id(struct net_device *dev, enum bpf_xdp_mode mode); |
aa8d3a71 | 3933 | |
a0265d28 | 3934 | int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
f629d208 | 3935 | int dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
5f7d5728 | 3936 | int dev_forward_skb_nomtu(struct net_device *dev, struct sk_buff *skb); |
f4b05d27 NA |
3937 | bool is_skb_forwardable(const struct net_device *dev, |
3938 | const struct sk_buff *skb); | |
1da177e4 | 3939 | |
5f7d5728 JDB |
3940 | static __always_inline bool __is_skb_forwardable(const struct net_device *dev, |
3941 | const struct sk_buff *skb, | |
3942 | const bool check_mtu) | |
3943 | { | |
3944 | const u32 vlan_hdr_len = 4; /* VLAN_HLEN */ | |
3945 | unsigned int len; | |
3946 | ||
3947 | if (!(dev->flags & IFF_UP)) | |
3948 | return false; | |
3949 | ||
3950 | if (!check_mtu) | |
3951 | return true; | |
3952 | ||
3953 | len = dev->mtu + dev->hard_header_len + vlan_hdr_len; | |
3954 | if (skb->len <= len) | |
3955 | return true; | |
3956 | ||
3957 | /* if TSO is enabled, we don't care about the length as the packet | |
3958 | * could be forwarded without being segmented before | |
3959 | */ | |
3960 | if (skb_is_gso(skb)) | |
3961 | return true; | |
3962 | ||
3963 | return false; | |
3964 | } | |
3965 | ||
6510ea97 | 3966 | struct net_device_core_stats __percpu *netdev_core_stats_alloc(struct net_device *dev); |
625788b5 | 3967 | |
6510ea97 | 3968 | static inline struct net_device_core_stats __percpu *dev_core_stats(struct net_device *dev) |
625788b5 ED |
3969 | { |
3970 | /* This READ_ONCE() pairs with the write in netdev_core_stats_alloc() */ | |
3971 | struct net_device_core_stats __percpu *p = READ_ONCE(dev->core_stats); | |
3972 | ||
3973 | if (likely(p)) | |
6510ea97 | 3974 | return p; |
625788b5 ED |
3975 | |
3976 | return netdev_core_stats_alloc(dev); | |
3977 | } | |
3978 | ||
3979 | #define DEV_CORE_STATS_INC(FIELD) \ | |
3980 | static inline void dev_core_stats_##FIELD##_inc(struct net_device *dev) \ | |
3981 | { \ | |
6510ea97 | 3982 | struct net_device_core_stats __percpu *p; \ |
fc93db15 | 3983 | \ |
fc93db15 | 3984 | p = dev_core_stats(dev); \ |
625788b5 | 3985 | if (p) \ |
6510ea97 | 3986 | this_cpu_inc(p->FIELD); \ |
625788b5 ED |
3987 | } |
3988 | DEV_CORE_STATS_INC(rx_dropped) | |
3989 | DEV_CORE_STATS_INC(tx_dropped) | |
3990 | DEV_CORE_STATS_INC(rx_nohandler) | |
794c24e9 | 3991 | DEV_CORE_STATS_INC(rx_otherhost_dropped) |
625788b5 | 3992 | |
4e3264d2 | 3993 | static __always_inline int ____dev_forward_skb(struct net_device *dev, |
5f7d5728 JDB |
3994 | struct sk_buff *skb, |
3995 | const bool check_mtu) | |
4e3264d2 MKL |
3996 | { |
3997 | if (skb_orphan_frags(skb, GFP_ATOMIC) || | |
5f7d5728 | 3998 | unlikely(!__is_skb_forwardable(dev, skb, check_mtu))) { |
625788b5 | 3999 | dev_core_stats_rx_dropped_inc(dev); |
4e3264d2 MKL |
4000 | kfree_skb(skb); |
4001 | return NET_RX_DROP; | |
4002 | } | |
4003 | ||
ff70202b | 4004 | skb_scrub_packet(skb, !net_eq(dev_net(dev), dev_net(skb->dev))); |
4e3264d2 MKL |
4005 | skb->priority = 0; |
4006 | return 0; | |
4007 | } | |
4008 | ||
9f9a742d | 4009 | bool dev_nit_active(struct net_device *dev); |
74b20582 DA |
4010 | void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev); |
4011 | ||
4c6c11ea | 4012 | static inline void __dev_put(struct net_device *dev) |
1da177e4 | 4013 | { |
b37a4668 | 4014 | if (dev) { |
919067cc | 4015 | #ifdef CONFIG_PCPU_DEV_REFCNT |
b37a4668 | 4016 | this_cpu_dec(*dev->pcpu_refcnt); |
919067cc | 4017 | #else |
b37a4668 | 4018 | refcount_dec(&dev->dev_refcnt); |
919067cc | 4019 | #endif |
b37a4668 | 4020 | } |
1da177e4 LT |
4021 | } |
4022 | ||
4c6c11ea | 4023 | static inline void __dev_hold(struct net_device *dev) |
15333061 | 4024 | { |
b37a4668 | 4025 | if (dev) { |
919067cc | 4026 | #ifdef CONFIG_PCPU_DEV_REFCNT |
b37a4668 | 4027 | this_cpu_inc(*dev->pcpu_refcnt); |
919067cc | 4028 | #else |
b37a4668 | 4029 | refcount_inc(&dev->dev_refcnt); |
919067cc | 4030 | #endif |
b37a4668 | 4031 | } |
15333061 | 4032 | } |
1da177e4 | 4033 | |
4c6c11ea ED |
4034 | static inline void __netdev_tracker_alloc(struct net_device *dev, |
4035 | netdevice_tracker *tracker, | |
4036 | gfp_t gfp) | |
4037 | { | |
4038 | #ifdef CONFIG_NET_DEV_REFCNT_TRACKER | |
4039 | ref_tracker_alloc(&dev->refcnt_tracker, tracker, gfp); | |
4040 | #endif | |
4041 | } | |
4042 | ||
4043 | /* netdev_tracker_alloc() can upgrade a prior untracked reference | |
4044 | * taken by dev_get_by_name()/dev_get_by_index() to a tracked one. | |
4045 | */ | |
4d92b95f ED |
4046 | static inline void netdev_tracker_alloc(struct net_device *dev, |
4047 | netdevice_tracker *tracker, gfp_t gfp) | |
4048 | { | |
4049 | #ifdef CONFIG_NET_DEV_REFCNT_TRACKER | |
4c6c11ea ED |
4050 | refcount_dec(&dev->refcnt_tracker.no_tracker); |
4051 | __netdev_tracker_alloc(dev, tracker, gfp); | |
4d92b95f ED |
4052 | #endif |
4053 | } | |
4054 | ||
4055 | static inline void netdev_tracker_free(struct net_device *dev, | |
4056 | netdevice_tracker *tracker) | |
4057 | { | |
4058 | #ifdef CONFIG_NET_DEV_REFCNT_TRACKER | |
4059 | ref_tracker_free(&dev->refcnt_tracker, tracker); | |
4060 | #endif | |
4061 | } | |
4062 | ||
d62607c3 JK |
4063 | static inline void netdev_hold(struct net_device *dev, |
4064 | netdevice_tracker *tracker, gfp_t gfp) | |
4d92b95f ED |
4065 | { |
4066 | if (dev) { | |
4c6c11ea ED |
4067 | __dev_hold(dev); |
4068 | __netdev_tracker_alloc(dev, tracker, gfp); | |
4d92b95f ED |
4069 | } |
4070 | } | |
4071 | ||
d62607c3 JK |
4072 | static inline void netdev_put(struct net_device *dev, |
4073 | netdevice_tracker *tracker) | |
4d92b95f ED |
4074 | { |
4075 | if (dev) { | |
4076 | netdev_tracker_free(dev, tracker); | |
4c6c11ea | 4077 | __dev_put(dev); |
4d92b95f ED |
4078 | } |
4079 | } | |
4080 | ||
4c6c11ea ED |
4081 | /** |
4082 | * dev_hold - get reference to device | |
4083 | * @dev: network device | |
4084 | * | |
4085 | * Hold reference to device to keep it from being freed. | |
d62607c3 | 4086 | * Try using netdev_hold() instead. |
4c6c11ea ED |
4087 | */ |
4088 | static inline void dev_hold(struct net_device *dev) | |
4089 | { | |
d62607c3 | 4090 | netdev_hold(dev, NULL, GFP_ATOMIC); |
4c6c11ea ED |
4091 | } |
4092 | ||
4093 | /** | |
4094 | * dev_put - release reference to device | |
4095 | * @dev: network device | |
4096 | * | |
4097 | * Release reference to device to allow it to be freed. | |
d62607c3 | 4098 | * Try using netdev_put() instead. |
4c6c11ea ED |
4099 | */ |
4100 | static inline void dev_put(struct net_device *dev) | |
4101 | { | |
d62607c3 | 4102 | netdev_put(dev, NULL); |
4c6c11ea ED |
4103 | } |
4104 | ||
d62607c3 JK |
4105 | static inline void netdev_ref_replace(struct net_device *odev, |
4106 | struct net_device *ndev, | |
4107 | netdevice_tracker *tracker, | |
4108 | gfp_t gfp) | |
9038c320 | 4109 | { |
9038c320 | 4110 | if (odev) |
9280ac2e ED |
4111 | netdev_tracker_free(odev, tracker); |
4112 | ||
4c6c11ea ED |
4113 | __dev_hold(ndev); |
4114 | __dev_put(odev); | |
9280ac2e | 4115 | |
9038c320 | 4116 | if (ndev) |
4c6c11ea | 4117 | __netdev_tracker_alloc(ndev, tracker, gfp); |
9038c320 ED |
4118 | } |
4119 | ||
1da177e4 LT |
4120 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on |
4121 | * and _off may be called from IRQ context, but it is caller | |
4122 | * who is responsible for serialization of these calls. | |
b00055aa SR |
4123 | * |
4124 | * The name carrier is inappropriate, these functions should really be | |
4125 | * called netif_lowerlayer_*() because they represent the state of any | |
4126 | * kind of lower layer not just hardware media. | |
1da177e4 | 4127 | */ |
f629d208 | 4128 | void linkwatch_fire_event(struct net_device *dev); |
1da177e4 | 4129 | |
bea3348e SH |
4130 | /** |
4131 | * netif_carrier_ok - test if carrier present | |
4132 | * @dev: network device | |
4133 | * | |
4134 | * Check if carrier is present on device | |
4135 | */ | |
4d29515f | 4136 | static inline bool netif_carrier_ok(const struct net_device *dev) |
1da177e4 LT |
4137 | { |
4138 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
4139 | } | |
4140 | ||
f629d208 | 4141 | unsigned long dev_trans_start(struct net_device *dev); |
9d21493b | 4142 | |
f629d208 | 4143 | void __netdev_watchdog_up(struct net_device *dev); |
1da177e4 | 4144 | |
f629d208 | 4145 | void netif_carrier_on(struct net_device *dev); |
f629d208 | 4146 | void netif_carrier_off(struct net_device *dev); |
490dceca | 4147 | void netif_carrier_event(struct net_device *dev); |
1da177e4 | 4148 | |
bea3348e SH |
4149 | /** |
4150 | * netif_dormant_on - mark device as dormant. | |
4151 | * @dev: network device | |
4152 | * | |
4153 | * Mark device as dormant (as per RFC2863). | |
4154 | * | |
4155 | * The dormant state indicates that the relevant interface is not | |
4156 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
4157 | * in a "pending" state, waiting for some external event. For "on- | |
4158 | * demand" interfaces, this new state identifies the situation where the | |
4159 | * interface is waiting for events to place it in the up state. | |
bea3348e | 4160 | */ |
b00055aa SR |
4161 | static inline void netif_dormant_on(struct net_device *dev) |
4162 | { | |
4163 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
4164 | linkwatch_fire_event(dev); | |
4165 | } | |
4166 | ||
bea3348e SH |
4167 | /** |
4168 | * netif_dormant_off - set device as not dormant. | |
4169 | * @dev: network device | |
4170 | * | |
4171 | * Device is not in dormant state. | |
4172 | */ | |
b00055aa SR |
4173 | static inline void netif_dormant_off(struct net_device *dev) |
4174 | { | |
4175 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
4176 | linkwatch_fire_event(dev); | |
4177 | } | |
4178 | ||
bea3348e | 4179 | /** |
8ecbc40a | 4180 | * netif_dormant - test if device is dormant |
bea3348e SH |
4181 | * @dev: network device |
4182 | * | |
8ecbc40a | 4183 | * Check if device is dormant. |
bea3348e | 4184 | */ |
4d29515f | 4185 | static inline bool netif_dormant(const struct net_device *dev) |
b00055aa SR |
4186 | { |
4187 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
4188 | } | |
4189 | ||
4190 | ||
eec517cd AL |
4191 | /** |
4192 | * netif_testing_on - mark device as under test. | |
4193 | * @dev: network device | |
4194 | * | |
4195 | * Mark device as under test (as per RFC2863). | |
4196 | * | |
4197 | * The testing state indicates that some test(s) must be performed on | |
4198 | * the interface. After completion, of the test, the interface state | |
4199 | * will change to up, dormant, or down, as appropriate. | |
4200 | */ | |
4201 | static inline void netif_testing_on(struct net_device *dev) | |
4202 | { | |
4203 | if (!test_and_set_bit(__LINK_STATE_TESTING, &dev->state)) | |
4204 | linkwatch_fire_event(dev); | |
4205 | } | |
4206 | ||
4207 | /** | |
4208 | * netif_testing_off - set device as not under test. | |
4209 | * @dev: network device | |
4210 | * | |
4211 | * Device is not in testing state. | |
4212 | */ | |
4213 | static inline void netif_testing_off(struct net_device *dev) | |
4214 | { | |
4215 | if (test_and_clear_bit(__LINK_STATE_TESTING, &dev->state)) | |
4216 | linkwatch_fire_event(dev); | |
4217 | } | |
4218 | ||
4219 | /** | |
4220 | * netif_testing - test if device is under test | |
4221 | * @dev: network device | |
4222 | * | |
4223 | * Check if device is under test | |
4224 | */ | |
4225 | static inline bool netif_testing(const struct net_device *dev) | |
4226 | { | |
4227 | return test_bit(__LINK_STATE_TESTING, &dev->state); | |
4228 | } | |
4229 | ||
4230 | ||
bea3348e SH |
4231 | /** |
4232 | * netif_oper_up - test if device is operational | |
4233 | * @dev: network device | |
4234 | * | |
4235 | * Check if carrier is operational | |
4236 | */ | |
4d29515f | 4237 | static inline bool netif_oper_up(const struct net_device *dev) |
d94d9fee | 4238 | { |
b00055aa SR |
4239 | return (dev->operstate == IF_OPER_UP || |
4240 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
4241 | } | |
4242 | ||
bea3348e SH |
4243 | /** |
4244 | * netif_device_present - is device available or removed | |
4245 | * @dev: network device | |
4246 | * | |
4247 | * Check if device has not been removed from system. | |
4248 | */ | |
7a126a43 | 4249 | static inline bool netif_device_present(const struct net_device *dev) |
1da177e4 LT |
4250 | { |
4251 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
4252 | } | |
4253 | ||
f629d208 | 4254 | void netif_device_detach(struct net_device *dev); |
1da177e4 | 4255 | |
f629d208 | 4256 | void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
4257 | |
4258 | /* | |
4259 | * Network interface message level settings | |
4260 | */ | |
1da177e4 LT |
4261 | |
4262 | enum { | |
6a94b8cc MK |
4263 | NETIF_MSG_DRV_BIT, |
4264 | NETIF_MSG_PROBE_BIT, | |
4265 | NETIF_MSG_LINK_BIT, | |
4266 | NETIF_MSG_TIMER_BIT, | |
4267 | NETIF_MSG_IFDOWN_BIT, | |
4268 | NETIF_MSG_IFUP_BIT, | |
4269 | NETIF_MSG_RX_ERR_BIT, | |
4270 | NETIF_MSG_TX_ERR_BIT, | |
4271 | NETIF_MSG_TX_QUEUED_BIT, | |
4272 | NETIF_MSG_INTR_BIT, | |
4273 | NETIF_MSG_TX_DONE_BIT, | |
4274 | NETIF_MSG_RX_STATUS_BIT, | |
4275 | NETIF_MSG_PKTDATA_BIT, | |
4276 | NETIF_MSG_HW_BIT, | |
4277 | NETIF_MSG_WOL_BIT, | |
4278 | ||
4279 | /* When you add a new bit above, update netif_msg_class_names array | |
4280 | * in net/ethtool/common.c | |
4281 | */ | |
4282 | NETIF_MSG_CLASS_COUNT, | |
1da177e4 | 4283 | }; |
6a94b8cc MK |
4284 | /* Both ethtool_ops interface and internal driver implementation use u32 */ |
4285 | static_assert(NETIF_MSG_CLASS_COUNT <= 32); | |
4286 | ||
4287 | #define __NETIF_MSG_BIT(bit) ((u32)1 << (bit)) | |
4288 | #define __NETIF_MSG(name) __NETIF_MSG_BIT(NETIF_MSG_ ## name ## _BIT) | |
4289 | ||
4290 | #define NETIF_MSG_DRV __NETIF_MSG(DRV) | |
4291 | #define NETIF_MSG_PROBE __NETIF_MSG(PROBE) | |
4292 | #define NETIF_MSG_LINK __NETIF_MSG(LINK) | |
4293 | #define NETIF_MSG_TIMER __NETIF_MSG(TIMER) | |
4294 | #define NETIF_MSG_IFDOWN __NETIF_MSG(IFDOWN) | |
4295 | #define NETIF_MSG_IFUP __NETIF_MSG(IFUP) | |
4296 | #define NETIF_MSG_RX_ERR __NETIF_MSG(RX_ERR) | |
4297 | #define NETIF_MSG_TX_ERR __NETIF_MSG(TX_ERR) | |
4298 | #define NETIF_MSG_TX_QUEUED __NETIF_MSG(TX_QUEUED) | |
4299 | #define NETIF_MSG_INTR __NETIF_MSG(INTR) | |
4300 | #define NETIF_MSG_TX_DONE __NETIF_MSG(TX_DONE) | |
4301 | #define NETIF_MSG_RX_STATUS __NETIF_MSG(RX_STATUS) | |
4302 | #define NETIF_MSG_PKTDATA __NETIF_MSG(PKTDATA) | |
4303 | #define NETIF_MSG_HW __NETIF_MSG(HW) | |
4304 | #define NETIF_MSG_WOL __NETIF_MSG(WOL) | |
1da177e4 LT |
4305 | |
4306 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
4307 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
4308 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
4309 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
4310 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
4311 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
4312 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
4313 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
4314 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
4315 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
4316 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
4317 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
4318 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
4319 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
4320 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
4321 | ||
4322 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
4323 | { | |
4324 | /* use default */ | |
4325 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
4326 | return default_msg_enable_bits; | |
4327 | if (debug_value == 0) /* no output */ | |
4328 | return 0; | |
4329 | /* set low N bits */ | |
f4d7b3e2 | 4330 | return (1U << debug_value) - 1; |
1da177e4 LT |
4331 | } |
4332 | ||
c773e847 | 4333 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 4334 | { |
c773e847 | 4335 | spin_lock(&txq->_xmit_lock); |
7a10d8c8 ED |
4336 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ |
4337 | WRITE_ONCE(txq->xmit_lock_owner, cpu); | |
22dd7495 JHS |
4338 | } |
4339 | ||
5a717f4f MT |
4340 | static inline bool __netif_tx_acquire(struct netdev_queue *txq) |
4341 | { | |
4342 | __acquire(&txq->_xmit_lock); | |
4343 | return true; | |
4344 | } | |
4345 | ||
4346 | static inline void __netif_tx_release(struct netdev_queue *txq) | |
4347 | { | |
4348 | __release(&txq->_xmit_lock); | |
4349 | } | |
4350 | ||
fd2ea0a7 DM |
4351 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
4352 | { | |
4353 | spin_lock_bh(&txq->_xmit_lock); | |
7a10d8c8 ED |
4354 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ |
4355 | WRITE_ONCE(txq->xmit_lock_owner, smp_processor_id()); | |
fd2ea0a7 DM |
4356 | } |
4357 | ||
4d29515f | 4358 | static inline bool __netif_tx_trylock(struct netdev_queue *txq) |
c3f26a26 | 4359 | { |
4d29515f | 4360 | bool ok = spin_trylock(&txq->_xmit_lock); |
7a10d8c8 ED |
4361 | |
4362 | if (likely(ok)) { | |
4363 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ | |
4364 | WRITE_ONCE(txq->xmit_lock_owner, smp_processor_id()); | |
4365 | } | |
c3f26a26 DM |
4366 | return ok; |
4367 | } | |
4368 | ||
4369 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
4370 | { | |
7a10d8c8 ED |
4371 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ |
4372 | WRITE_ONCE(txq->xmit_lock_owner, -1); | |
c3f26a26 DM |
4373 | spin_unlock(&txq->_xmit_lock); |
4374 | } | |
4375 | ||
4376 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
4377 | { | |
7a10d8c8 ED |
4378 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ |
4379 | WRITE_ONCE(txq->xmit_lock_owner, -1); | |
c3f26a26 DM |
4380 | spin_unlock_bh(&txq->_xmit_lock); |
4381 | } | |
4382 | ||
5337824f ED |
4383 | /* |
4384 | * txq->trans_start can be read locklessly from dev_watchdog() | |
4385 | */ | |
08baf561 ED |
4386 | static inline void txq_trans_update(struct netdev_queue *txq) |
4387 | { | |
4388 | if (txq->xmit_lock_owner != -1) | |
5337824f ED |
4389 | WRITE_ONCE(txq->trans_start, jiffies); |
4390 | } | |
4391 | ||
4392 | static inline void txq_trans_cond_update(struct netdev_queue *txq) | |
4393 | { | |
4394 | unsigned long now = jiffies; | |
4395 | ||
4396 | if (READ_ONCE(txq->trans_start) != now) | |
4397 | WRITE_ONCE(txq->trans_start, now); | |
08baf561 ED |
4398 | } |
4399 | ||
ba162f8e FW |
4400 | /* legacy drivers only, netdev_start_xmit() sets txq->trans_start */ |
4401 | static inline void netif_trans_update(struct net_device *dev) | |
4402 | { | |
9b36627a FW |
4403 | struct netdev_queue *txq = netdev_get_tx_queue(dev, 0); |
4404 | ||
5337824f | 4405 | txq_trans_cond_update(txq); |
ba162f8e FW |
4406 | } |
4407 | ||
d29f749e DJ |
4408 | /** |
4409 | * netif_tx_lock - grab network device transmit lock | |
4410 | * @dev: network device | |
d29f749e DJ |
4411 | * |
4412 | * Get network device transmit lock | |
4413 | */ | |
dab8fe32 | 4414 | void netif_tx_lock(struct net_device *dev); |
932ff279 HX |
4415 | |
4416 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
4417 | { | |
e8a0464c DM |
4418 | local_bh_disable(); |
4419 | netif_tx_lock(dev); | |
932ff279 HX |
4420 | } |
4421 | ||
dab8fe32 | 4422 | void netif_tx_unlock(struct net_device *dev); |
932ff279 HX |
4423 | |
4424 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
4425 | { | |
e8a0464c DM |
4426 | netif_tx_unlock(dev); |
4427 | local_bh_enable(); | |
932ff279 HX |
4428 | } |
4429 | ||
c773e847 | 4430 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 4431 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 4432 | __netif_tx_lock(txq, cpu); \ |
5a717f4f MT |
4433 | } else { \ |
4434 | __netif_tx_acquire(txq); \ | |
22dd7495 JHS |
4435 | } \ |
4436 | } | |
4437 | ||
5efeac44 EB |
4438 | #define HARD_TX_TRYLOCK(dev, txq) \ |
4439 | (((dev->features & NETIF_F_LLTX) == 0) ? \ | |
4440 | __netif_tx_trylock(txq) : \ | |
5a717f4f | 4441 | __netif_tx_acquire(txq)) |
5efeac44 | 4442 | |
c773e847 | 4443 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 4444 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 4445 | __netif_tx_unlock(txq); \ |
5a717f4f MT |
4446 | } else { \ |
4447 | __netif_tx_release(txq); \ | |
22dd7495 JHS |
4448 | } \ |
4449 | } | |
4450 | ||
1da177e4 LT |
4451 | static inline void netif_tx_disable(struct net_device *dev) |
4452 | { | |
fd2ea0a7 | 4453 | unsigned int i; |
c3f26a26 | 4454 | int cpu; |
fd2ea0a7 | 4455 | |
c3f26a26 DM |
4456 | local_bh_disable(); |
4457 | cpu = smp_processor_id(); | |
3aa6bce9 | 4458 | spin_lock(&dev->tx_global_lock); |
fd2ea0a7 DM |
4459 | for (i = 0; i < dev->num_tx_queues; i++) { |
4460 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
4461 | |
4462 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 4463 | netif_tx_stop_queue(txq); |
c3f26a26 | 4464 | __netif_tx_unlock(txq); |
fd2ea0a7 | 4465 | } |
3aa6bce9 | 4466 | spin_unlock(&dev->tx_global_lock); |
c3f26a26 | 4467 | local_bh_enable(); |
1da177e4 LT |
4468 | } |
4469 | ||
e308a5d8 DM |
4470 | static inline void netif_addr_lock(struct net_device *dev) |
4471 | { | |
1fc70edb | 4472 | unsigned char nest_level = 0; |
e308a5d8 | 4473 | |
1fc70edb TY |
4474 | #ifdef CONFIG_LOCKDEP |
4475 | nest_level = dev->nested_level; | |
4476 | #endif | |
4477 | spin_lock_nested(&dev->addr_list_lock, nest_level); | |
845e0ebb CW |
4478 | } |
4479 | ||
e308a5d8 DM |
4480 | static inline void netif_addr_lock_bh(struct net_device *dev) |
4481 | { | |
1fc70edb TY |
4482 | unsigned char nest_level = 0; |
4483 | ||
4484 | #ifdef CONFIG_LOCKDEP | |
4485 | nest_level = dev->nested_level; | |
4486 | #endif | |
4487 | local_bh_disable(); | |
4488 | spin_lock_nested(&dev->addr_list_lock, nest_level); | |
e308a5d8 DM |
4489 | } |
4490 | ||
4491 | static inline void netif_addr_unlock(struct net_device *dev) | |
4492 | { | |
4493 | spin_unlock(&dev->addr_list_lock); | |
4494 | } | |
4495 | ||
4496 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
4497 | { | |
4498 | spin_unlock_bh(&dev->addr_list_lock); | |
4499 | } | |
4500 | ||
f001fde5 | 4501 | /* |
31278e71 | 4502 | * dev_addrs walker. Should be used only for read access. Call with |
f001fde5 JP |
4503 | * rcu_read_lock held. |
4504 | */ | |
4505 | #define for_each_dev_addr(dev, ha) \ | |
31278e71 | 4506 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
f001fde5 | 4507 | |
1da177e4 LT |
4508 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
4509 | ||
f629d208 | 4510 | void ether_setup(struct net_device *dev); |
1da177e4 LT |
4511 | |
4512 | /* Support for loadable net-drivers */ | |
f629d208 | 4513 | struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, |
c835a677 | 4514 | unsigned char name_assign_type, |
f629d208 JP |
4515 | void (*setup)(struct net_device *), |
4516 | unsigned int txqs, unsigned int rxqs); | |
c835a677 TG |
4517 | #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \ |
4518 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, 1, 1) | |
36909ea4 | 4519 | |
c835a677 TG |
4520 | #define alloc_netdev_mq(sizeof_priv, name, name_assign_type, setup, count) \ |
4521 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, count, \ | |
4522 | count) | |
36909ea4 | 4523 | |
f629d208 JP |
4524 | int register_netdev(struct net_device *dev); |
4525 | void unregister_netdev(struct net_device *dev); | |
f001fde5 | 4526 | |
cd16627f BG |
4527 | int devm_register_netdev(struct device *dev, struct net_device *ndev); |
4528 | ||
22bedad3 | 4529 | /* General hardware address lists handling functions */ |
f629d208 JP |
4530 | int __hw_addr_sync(struct netdev_hw_addr_list *to_list, |
4531 | struct netdev_hw_addr_list *from_list, int addr_len); | |
4532 | void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, | |
4533 | struct netdev_hw_addr_list *from_list, int addr_len); | |
670e5b8e AD |
4534 | int __hw_addr_sync_dev(struct netdev_hw_addr_list *list, |
4535 | struct net_device *dev, | |
4536 | int (*sync)(struct net_device *, const unsigned char *), | |
4537 | int (*unsync)(struct net_device *, | |
4538 | const unsigned char *)); | |
e7946760 IK |
4539 | int __hw_addr_ref_sync_dev(struct netdev_hw_addr_list *list, |
4540 | struct net_device *dev, | |
4541 | int (*sync)(struct net_device *, | |
4542 | const unsigned char *, int), | |
4543 | int (*unsync)(struct net_device *, | |
4544 | const unsigned char *, int)); | |
4545 | void __hw_addr_ref_unsync_dev(struct netdev_hw_addr_list *list, | |
4546 | struct net_device *dev, | |
4547 | int (*unsync)(struct net_device *, | |
4548 | const unsigned char *, int)); | |
670e5b8e AD |
4549 | void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list, |
4550 | struct net_device *dev, | |
4551 | int (*unsync)(struct net_device *, | |
4552 | const unsigned char *)); | |
f629d208 | 4553 | void __hw_addr_init(struct netdev_hw_addr_list *list); |
22bedad3 | 4554 | |
f001fde5 | 4555 | /* Functions used for device addresses handling */ |
adeef3e3 JK |
4556 | void dev_addr_mod(struct net_device *dev, unsigned int offset, |
4557 | const void *addr, size_t len); | |
4558 | ||
48eab831 | 4559 | static inline void |
40af35fd | 4560 | __dev_addr_set(struct net_device *dev, const void *addr, size_t len) |
48eab831 | 4561 | { |
adeef3e3 | 4562 | dev_addr_mod(dev, 0, addr, len); |
48eab831 JK |
4563 | } |
4564 | ||
4565 | static inline void dev_addr_set(struct net_device *dev, const u8 *addr) | |
4566 | { | |
4567 | __dev_addr_set(dev, addr, dev->addr_len); | |
4568 | } | |
4569 | ||
f629d208 JP |
4570 | int dev_addr_add(struct net_device *dev, const unsigned char *addr, |
4571 | unsigned char addr_type); | |
4572 | int dev_addr_del(struct net_device *dev, const unsigned char *addr, | |
4573 | unsigned char addr_type); | |
a748ee24 JP |
4574 | |
4575 | /* Functions used for unicast addresses handling */ | |
f629d208 JP |
4576 | int dev_uc_add(struct net_device *dev, const unsigned char *addr); |
4577 | int dev_uc_add_excl(struct net_device *dev, const unsigned char *addr); | |
4578 | int dev_uc_del(struct net_device *dev, const unsigned char *addr); | |
4579 | int dev_uc_sync(struct net_device *to, struct net_device *from); | |
4580 | int dev_uc_sync_multiple(struct net_device *to, struct net_device *from); | |
4581 | void dev_uc_unsync(struct net_device *to, struct net_device *from); | |
4582 | void dev_uc_flush(struct net_device *dev); | |
4583 | void dev_uc_init(struct net_device *dev); | |
f001fde5 | 4584 | |
670e5b8e AD |
4585 | /** |
4586 | * __dev_uc_sync - Synchonize device's unicast list | |
4587 | * @dev: device to sync | |
4588 | * @sync: function to call if address should be added | |
4589 | * @unsync: function to call if address should be removed | |
4590 | * | |
4591 | * Add newly added addresses to the interface, and release | |
4592 | * addresses that have been deleted. | |
5e82b4b2 | 4593 | */ |
670e5b8e AD |
4594 | static inline int __dev_uc_sync(struct net_device *dev, |
4595 | int (*sync)(struct net_device *, | |
4596 | const unsigned char *), | |
4597 | int (*unsync)(struct net_device *, | |
4598 | const unsigned char *)) | |
4599 | { | |
4600 | return __hw_addr_sync_dev(&dev->uc, dev, sync, unsync); | |
4601 | } | |
4602 | ||
4603 | /** | |
e793c0f7 | 4604 | * __dev_uc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
4605 | * @dev: device to sync |
4606 | * @unsync: function to call if address should be removed | |
4607 | * | |
4608 | * Remove all addresses that were added to the device by dev_uc_sync(). | |
5e82b4b2 | 4609 | */ |
670e5b8e AD |
4610 | static inline void __dev_uc_unsync(struct net_device *dev, |
4611 | int (*unsync)(struct net_device *, | |
4612 | const unsigned char *)) | |
4613 | { | |
4614 | __hw_addr_unsync_dev(&dev->uc, dev, unsync); | |
4615 | } | |
4616 | ||
22bedad3 | 4617 | /* Functions used for multicast addresses handling */ |
f629d208 JP |
4618 | int dev_mc_add(struct net_device *dev, const unsigned char *addr); |
4619 | int dev_mc_add_global(struct net_device *dev, const unsigned char *addr); | |
4620 | int dev_mc_add_excl(struct net_device *dev, const unsigned char *addr); | |
4621 | int dev_mc_del(struct net_device *dev, const unsigned char *addr); | |
4622 | int dev_mc_del_global(struct net_device *dev, const unsigned char *addr); | |
4623 | int dev_mc_sync(struct net_device *to, struct net_device *from); | |
4624 | int dev_mc_sync_multiple(struct net_device *to, struct net_device *from); | |
4625 | void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
4626 | void dev_mc_flush(struct net_device *dev); | |
4627 | void dev_mc_init(struct net_device *dev); | |
f001fde5 | 4628 | |
670e5b8e AD |
4629 | /** |
4630 | * __dev_mc_sync - Synchonize device's multicast list | |
4631 | * @dev: device to sync | |
4632 | * @sync: function to call if address should be added | |
4633 | * @unsync: function to call if address should be removed | |
4634 | * | |
4635 | * Add newly added addresses to the interface, and release | |
4636 | * addresses that have been deleted. | |
5e82b4b2 | 4637 | */ |
670e5b8e AD |
4638 | static inline int __dev_mc_sync(struct net_device *dev, |
4639 | int (*sync)(struct net_device *, | |
4640 | const unsigned char *), | |
4641 | int (*unsync)(struct net_device *, | |
4642 | const unsigned char *)) | |
4643 | { | |
4644 | return __hw_addr_sync_dev(&dev->mc, dev, sync, unsync); | |
4645 | } | |
4646 | ||
4647 | /** | |
e793c0f7 | 4648 | * __dev_mc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
4649 | * @dev: device to sync |
4650 | * @unsync: function to call if address should be removed | |
4651 | * | |
4652 | * Remove all addresses that were added to the device by dev_mc_sync(). | |
5e82b4b2 | 4653 | */ |
670e5b8e AD |
4654 | static inline void __dev_mc_unsync(struct net_device *dev, |
4655 | int (*unsync)(struct net_device *, | |
4656 | const unsigned char *)) | |
4657 | { | |
4658 | __hw_addr_unsync_dev(&dev->mc, dev, unsync); | |
4659 | } | |
4660 | ||
4417da66 | 4661 | /* Functions used for secondary unicast and multicast support */ |
f629d208 | 4662 | void dev_set_rx_mode(struct net_device *dev); |
f629d208 JP |
4663 | int dev_set_promiscuity(struct net_device *dev, int inc); |
4664 | int dev_set_allmulti(struct net_device *dev, int inc); | |
4665 | void netdev_state_change(struct net_device *dev); | |
7061eb8c | 4666 | void __netdev_notify_peers(struct net_device *dev); |
f629d208 JP |
4667 | void netdev_notify_peers(struct net_device *dev); |
4668 | void netdev_features_change(struct net_device *dev); | |
1da177e4 | 4669 | /* Load a device via the kmod */ |
f629d208 JP |
4670 | void dev_load(struct net *net, const char *name); |
4671 | struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, | |
4672 | struct rtnl_link_stats64 *storage); | |
4673 | void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64, | |
4674 | const struct net_device_stats *netdev_stats); | |
44fa32f0 HK |
4675 | void dev_fetch_sw_netstats(struct rtnl_link_stats64 *s, |
4676 | const struct pcpu_sw_netstats __percpu *netstats); | |
a1839426 | 4677 | void dev_get_tstats64(struct net_device *dev, struct rtnl_link_stats64 *s); |
eeda3fd6 | 4678 | |
1da177e4 | 4679 | extern int netdev_max_backlog; |
3d48b53f MT |
4680 | extern int dev_rx_weight; |
4681 | extern int dev_tx_weight; | |
323ebb61 | 4682 | extern int gro_normal_batch; |
9ff162a8 | 4683 | |
1fc70edb TY |
4684 | enum { |
4685 | NESTED_SYNC_IMM_BIT, | |
4686 | NESTED_SYNC_TODO_BIT, | |
4687 | }; | |
4688 | ||
4689 | #define __NESTED_SYNC_BIT(bit) ((u32)1 << (bit)) | |
4690 | #define __NESTED_SYNC(name) __NESTED_SYNC_BIT(NESTED_SYNC_ ## name ## _BIT) | |
4691 | ||
4692 | #define NESTED_SYNC_IMM __NESTED_SYNC(IMM) | |
4693 | #define NESTED_SYNC_TODO __NESTED_SYNC(TODO) | |
4694 | ||
eff74233 | 4695 | struct netdev_nested_priv { |
1fc70edb | 4696 | unsigned char flags; |
eff74233 TY |
4697 | void *data; |
4698 | }; | |
4699 | ||
f629d208 | 4700 | bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev); |
44a40855 VY |
4701 | struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev, |
4702 | struct list_head **iter); | |
8b5be856 | 4703 | |
44a40855 VY |
4704 | /* iterate through upper list, must be called under RCU read lock */ |
4705 | #define netdev_for_each_upper_dev_rcu(dev, updev, iter) \ | |
4706 | for (iter = &(dev)->adj_list.upper, \ | |
4707 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter)); \ | |
4708 | updev; \ | |
4709 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter))) | |
4710 | ||
1a3f060c DA |
4711 | int netdev_walk_all_upper_dev_rcu(struct net_device *dev, |
4712 | int (*fn)(struct net_device *upper_dev, | |
eff74233 TY |
4713 | struct netdev_nested_priv *priv), |
4714 | struct netdev_nested_priv *priv); | |
1a3f060c DA |
4715 | |
4716 | bool netdev_has_upper_dev_all_rcu(struct net_device *dev, | |
4717 | struct net_device *upper_dev); | |
4718 | ||
25cc72a3 IS |
4719 | bool netdev_has_any_upper_dev(struct net_device *dev); |
4720 | ||
f629d208 JP |
4721 | void *netdev_lower_get_next_private(struct net_device *dev, |
4722 | struct list_head **iter); | |
4723 | void *netdev_lower_get_next_private_rcu(struct net_device *dev, | |
4724 | struct list_head **iter); | |
31088a11 VF |
4725 | |
4726 | #define netdev_for_each_lower_private(dev, priv, iter) \ | |
4727 | for (iter = (dev)->adj_list.lower.next, \ | |
4728 | priv = netdev_lower_get_next_private(dev, &(iter)); \ | |
4729 | priv; \ | |
4730 | priv = netdev_lower_get_next_private(dev, &(iter))) | |
4731 | ||
4732 | #define netdev_for_each_lower_private_rcu(dev, priv, iter) \ | |
4733 | for (iter = &(dev)->adj_list.lower, \ | |
4734 | priv = netdev_lower_get_next_private_rcu(dev, &(iter)); \ | |
4735 | priv; \ | |
4736 | priv = netdev_lower_get_next_private_rcu(dev, &(iter))) | |
4737 | ||
4085ebe8 VY |
4738 | void *netdev_lower_get_next(struct net_device *dev, |
4739 | struct list_head **iter); | |
7ce856aa | 4740 | |
4085ebe8 | 4741 | #define netdev_for_each_lower_dev(dev, ldev, iter) \ |
cfdd28be | 4742 | for (iter = (dev)->adj_list.lower.next, \ |
4085ebe8 VY |
4743 | ldev = netdev_lower_get_next(dev, &(iter)); \ |
4744 | ldev; \ | |
4745 | ldev = netdev_lower_get_next(dev, &(iter))) | |
4746 | ||
7151affe | 4747 | struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev, |
7ce856aa | 4748 | struct list_head **iter); |
1a3f060c DA |
4749 | int netdev_walk_all_lower_dev(struct net_device *dev, |
4750 | int (*fn)(struct net_device *lower_dev, | |
eff74233 TY |
4751 | struct netdev_nested_priv *priv), |
4752 | struct netdev_nested_priv *priv); | |
1a3f060c DA |
4753 | int netdev_walk_all_lower_dev_rcu(struct net_device *dev, |
4754 | int (*fn)(struct net_device *lower_dev, | |
eff74233 TY |
4755 | struct netdev_nested_priv *priv), |
4756 | struct netdev_nested_priv *priv); | |
1a3f060c | 4757 | |
f629d208 | 4758 | void *netdev_adjacent_get_private(struct list_head *adj_list); |
e001bfad | 4759 | void *netdev_lower_get_first_private_rcu(struct net_device *dev); |
f629d208 JP |
4760 | struct net_device *netdev_master_upper_dev_get(struct net_device *dev); |
4761 | struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev); | |
42ab19ee DA |
4762 | int netdev_upper_dev_link(struct net_device *dev, struct net_device *upper_dev, |
4763 | struct netlink_ext_ack *extack); | |
f629d208 | 4764 | int netdev_master_upper_dev_link(struct net_device *dev, |
6dffb044 | 4765 | struct net_device *upper_dev, |
42ab19ee DA |
4766 | void *upper_priv, void *upper_info, |
4767 | struct netlink_ext_ack *extack); | |
f629d208 JP |
4768 | void netdev_upper_dev_unlink(struct net_device *dev, |
4769 | struct net_device *upper_dev); | |
32b6d34f TY |
4770 | int netdev_adjacent_change_prepare(struct net_device *old_dev, |
4771 | struct net_device *new_dev, | |
4772 | struct net_device *dev, | |
4773 | struct netlink_ext_ack *extack); | |
4774 | void netdev_adjacent_change_commit(struct net_device *old_dev, | |
4775 | struct net_device *new_dev, | |
4776 | struct net_device *dev); | |
4777 | void netdev_adjacent_change_abort(struct net_device *old_dev, | |
4778 | struct net_device *new_dev, | |
4779 | struct net_device *dev); | |
5bb025fa | 4780 | void netdev_adjacent_rename_links(struct net_device *dev, char *oldname); |
f629d208 JP |
4781 | void *netdev_lower_dev_get_private(struct net_device *dev, |
4782 | struct net_device *lower_dev); | |
04d48266 JP |
4783 | void netdev_lower_state_changed(struct net_device *lower_dev, |
4784 | void *lower_state_info); | |
960fb622 ED |
4785 | |
4786 | /* RSS keys are 40 or 52 bytes long */ | |
4787 | #define NETDEV_RSS_KEY_LEN 52 | |
ba905f5e | 4788 | extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
4789 | void netdev_rss_key_fill(void *buffer, size_t len); |
4790 | ||
f629d208 | 4791 | int skb_checksum_help(struct sk_buff *skb); |
b72b5bf6 | 4792 | int skb_crc32c_csum_help(struct sk_buff *skb); |
43c26a1a DC |
4793 | int skb_csum_hwoffload_help(struct sk_buff *skb, |
4794 | const netdev_features_t features); | |
4795 | ||
f629d208 JP |
4796 | struct sk_buff *__skb_gso_segment(struct sk_buff *skb, |
4797 | netdev_features_t features, bool tx_path); | |
23c7f8d7 SK |
4798 | struct sk_buff *skb_eth_gso_segment(struct sk_buff *skb, |
4799 | netdev_features_t features, __be16 type); | |
f629d208 JP |
4800 | struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb, |
4801 | netdev_features_t features); | |
12b0004d | 4802 | |
61bd3857 MS |
4803 | struct netdev_bonding_info { |
4804 | ifslave slave; | |
4805 | ifbond master; | |
4806 | }; | |
4807 | ||
4808 | struct netdev_notifier_bonding_info { | |
4809 | struct netdev_notifier_info info; /* must be first */ | |
4810 | struct netdev_bonding_info bonding_info; | |
4811 | }; | |
4812 | ||
4813 | void netdev_bonding_info_change(struct net_device *dev, | |
4814 | struct netdev_bonding_info *bonding_info); | |
4815 | ||
6b08d6c1 MK |
4816 | #if IS_ENABLED(CONFIG_ETHTOOL_NETLINK) |
4817 | void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data); | |
4818 | #else | |
4819 | static inline void ethtool_notify(struct net_device *dev, unsigned int cmd, | |
4820 | const void *data) | |
4821 | { | |
4822 | } | |
4823 | #endif | |
4824 | ||
12b0004d CW |
4825 | static inline |
4826 | struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features) | |
4827 | { | |
4828 | return __skb_gso_segment(skb, features, true); | |
4829 | } | |
53d6471c | 4830 | __be16 skb_network_protocol(struct sk_buff *skb, int *depth); |
ec5f0615 PS |
4831 | |
4832 | static inline bool can_checksum_protocol(netdev_features_t features, | |
4833 | __be16 protocol) | |
4834 | { | |
c8cd0989 TH |
4835 | if (protocol == htons(ETH_P_FCOE)) |
4836 | return !!(features & NETIF_F_FCOE_CRC); | |
4837 | ||
4838 | /* Assume this is an IP checksum (not SCTP CRC) */ | |
4839 | ||
4840 | if (features & NETIF_F_HW_CSUM) { | |
4841 | /* Can checksum everything */ | |
4842 | return true; | |
4843 | } | |
4844 | ||
4845 | switch (protocol) { | |
4846 | case htons(ETH_P_IP): | |
4847 | return !!(features & NETIF_F_IP_CSUM); | |
4848 | case htons(ETH_P_IPV6): | |
4849 | return !!(features & NETIF_F_IPV6_CSUM); | |
4850 | default: | |
4851 | return false; | |
4852 | } | |
ec5f0615 | 4853 | } |
12b0004d | 4854 | |
fb286bb2 | 4855 | #ifdef CONFIG_BUG |
7fe50ac8 | 4856 | void netdev_rx_csum_fault(struct net_device *dev, struct sk_buff *skb); |
fb286bb2 | 4857 | #else |
7fe50ac8 CW |
4858 | static inline void netdev_rx_csum_fault(struct net_device *dev, |
4859 | struct sk_buff *skb) | |
fb286bb2 HX |
4860 | { |
4861 | } | |
4862 | #endif | |
1da177e4 | 4863 | /* rx skb timestamps */ |
f629d208 JP |
4864 | void net_enable_timestamp(void); |
4865 | void net_disable_timestamp(void); | |
1da177e4 | 4866 | |
97dc7cd9 GE |
4867 | static inline ktime_t netdev_get_tstamp(struct net_device *dev, |
4868 | const struct skb_shared_hwtstamps *hwtstamps, | |
4869 | bool cycles) | |
4870 | { | |
4871 | const struct net_device_ops *ops = dev->netdev_ops; | |
4872 | ||
4873 | if (ops->ndo_get_tstamp) | |
4874 | return ops->ndo_get_tstamp(dev, hwtstamps, cycles); | |
4875 | ||
4876 | return hwtstamps->hwtstamp; | |
4877 | } | |
4878 | ||
4798248e | 4879 | static inline netdev_tx_t __netdev_start_xmit(const struct net_device_ops *ops, |
fa2dbdc2 DM |
4880 | struct sk_buff *skb, struct net_device *dev, |
4881 | bool more) | |
4798248e | 4882 | { |
6b16f9ee | 4883 | __this_cpu_write(softnet_data.xmit.more, more); |
0b725a2c | 4884 | return ops->ndo_start_xmit(skb, dev); |
4798248e DM |
4885 | } |
4886 | ||
97cdcf37 FW |
4887 | static inline bool netdev_xmit_more(void) |
4888 | { | |
4889 | return __this_cpu_read(softnet_data.xmit.more); | |
4890 | } | |
4891 | ||
10b3ad8c | 4892 | static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev, |
fa2dbdc2 | 4893 | struct netdev_queue *txq, bool more) |
4798248e DM |
4894 | { |
4895 | const struct net_device_ops *ops = dev->netdev_ops; | |
2183435c | 4896 | netdev_tx_t rc; |
4798248e | 4897 | |
fa2dbdc2 | 4898 | rc = __netdev_start_xmit(ops, skb, dev, more); |
10b3ad8c DM |
4899 | if (rc == NETDEV_TX_OK) |
4900 | txq_trans_update(txq); | |
4901 | ||
4902 | return rc; | |
4798248e DM |
4903 | } |
4904 | ||
b793dc5c | 4905 | int netdev_class_create_file_ns(const struct class_attribute *class_attr, |
42a2d923 | 4906 | const void *ns); |
b793dc5c | 4907 | void netdev_class_remove_file_ns(const struct class_attribute *class_attr, |
42a2d923 | 4908 | const void *ns); |
58292cbe | 4909 | |
737aec57 | 4910 | extern const struct kobj_ns_type_operations net_ns_type_operations; |
04600794 | 4911 | |
f629d208 | 4912 | const char *netdev_drivername(const struct net_device *dev); |
6579e57b | 4913 | |
da08143b MK |
4914 | static inline netdev_features_t netdev_intersect_features(netdev_features_t f1, |
4915 | netdev_features_t f2) | |
4916 | { | |
c8cd0989 TH |
4917 | if ((f1 ^ f2) & NETIF_F_HW_CSUM) { |
4918 | if (f1 & NETIF_F_HW_CSUM) | |
b6a0e72a | 4919 | f1 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 4920 | else |
b6a0e72a | 4921 | f2 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 4922 | } |
da08143b | 4923 | |
c8cd0989 | 4924 | return f1 & f2; |
da08143b MK |
4925 | } |
4926 | ||
c8f44aff MM |
4927 | static inline netdev_features_t netdev_get_wanted_features( |
4928 | struct net_device *dev) | |
5455c699 MM |
4929 | { |
4930 | return (dev->features & ~dev->hw_features) | dev->wanted_features; | |
4931 | } | |
c8f44aff MM |
4932 | netdev_features_t netdev_increment_features(netdev_features_t all, |
4933 | netdev_features_t one, netdev_features_t mask); | |
b0ce3508 ED |
4934 | |
4935 | /* Allow TSO being used on stacked device : | |
4936 | * Performing the GSO segmentation before last device | |
4937 | * is a performance improvement. | |
4938 | */ | |
4939 | static inline netdev_features_t netdev_add_tso_features(netdev_features_t features, | |
4940 | netdev_features_t mask) | |
4941 | { | |
4942 | return netdev_increment_features(features, NETIF_F_ALL_TSO, mask); | |
4943 | } | |
4944 | ||
6cb6a27c | 4945 | int __netdev_update_features(struct net_device *dev); |
5455c699 | 4946 | void netdev_update_features(struct net_device *dev); |
afe12cc8 | 4947 | void netdev_change_features(struct net_device *dev); |
7f353bf2 | 4948 | |
fc4a7489 PM |
4949 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
4950 | struct net_device *dev); | |
4951 | ||
e38f3025 TM |
4952 | netdev_features_t passthru_features_check(struct sk_buff *skb, |
4953 | struct net_device *dev, | |
4954 | netdev_features_t features); | |
c1e756bf | 4955 | netdev_features_t netif_skb_features(struct sk_buff *skb); |
58e998c6 | 4956 | |
4d29515f | 4957 | static inline bool net_gso_ok(netdev_features_t features, int gso_type) |
576a30eb | 4958 | { |
7b748340 | 4959 | netdev_features_t feature = (netdev_features_t)gso_type << NETIF_F_GSO_SHIFT; |
0345e186 MM |
4960 | |
4961 | /* check flags correspondence */ | |
4962 | BUILD_BUG_ON(SKB_GSO_TCPV4 != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT)); | |
0345e186 MM |
4963 | BUILD_BUG_ON(SKB_GSO_DODGY != (NETIF_F_GSO_ROBUST >> NETIF_F_GSO_SHIFT)); |
4964 | BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT)); | |
cbc53e08 | 4965 | BUILD_BUG_ON(SKB_GSO_TCP_FIXEDID != (NETIF_F_TSO_MANGLEID >> NETIF_F_GSO_SHIFT)); |
0345e186 MM |
4966 | BUILD_BUG_ON(SKB_GSO_TCPV6 != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT)); |
4967 | BUILD_BUG_ON(SKB_GSO_FCOE != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
4968 | BUILD_BUG_ON(SKB_GSO_GRE != (NETIF_F_GSO_GRE >> NETIF_F_GSO_SHIFT)); |
4969 | BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT)); | |
7e13318d TH |
4970 | BUILD_BUG_ON(SKB_GSO_IPXIP4 != (NETIF_F_GSO_IPXIP4 >> NETIF_F_GSO_SHIFT)); |
4971 | BUILD_BUG_ON(SKB_GSO_IPXIP6 != (NETIF_F_GSO_IPXIP6 >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
4972 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT)); |
4973 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT)); | |
802ab55a | 4974 | BUILD_BUG_ON(SKB_GSO_PARTIAL != (NETIF_F_GSO_PARTIAL >> NETIF_F_GSO_SHIFT)); |
e585f236 | 4975 | BUILD_BUG_ON(SKB_GSO_TUNNEL_REMCSUM != (NETIF_F_GSO_TUNNEL_REMCSUM >> NETIF_F_GSO_SHIFT)); |
90017acc | 4976 | BUILD_BUG_ON(SKB_GSO_SCTP != (NETIF_F_GSO_SCTP >> NETIF_F_GSO_SHIFT)); |
c7ef8f0c | 4977 | BUILD_BUG_ON(SKB_GSO_ESP != (NETIF_F_GSO_ESP >> NETIF_F_GSO_SHIFT)); |
0c19f846 | 4978 | BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_GSO_UDP >> NETIF_F_GSO_SHIFT)); |
83aa025f | 4979 | BUILD_BUG_ON(SKB_GSO_UDP_L4 != (NETIF_F_GSO_UDP_L4 >> NETIF_F_GSO_SHIFT)); |
3b335832 | 4980 | BUILD_BUG_ON(SKB_GSO_FRAGLIST != (NETIF_F_GSO_FRAGLIST >> NETIF_F_GSO_SHIFT)); |
0345e186 | 4981 | |
d6b4991a | 4982 | return (features & feature) == feature; |
576a30eb HX |
4983 | } |
4984 | ||
4d29515f | 4985 | static inline bool skb_gso_ok(struct sk_buff *skb, netdev_features_t features) |
bcd76111 | 4986 | { |
278b2513 | 4987 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
21dc3301 | 4988 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
bcd76111 HX |
4989 | } |
4990 | ||
8b86a61d | 4991 | static inline bool netif_needs_gso(struct sk_buff *skb, |
4d29515f | 4992 | netdev_features_t features) |
7967168c | 4993 | { |
fc741216 | 4994 | return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || |
cdbee74c YZ |
4995 | unlikely((skb->ip_summed != CHECKSUM_PARTIAL) && |
4996 | (skb->ip_summed != CHECKSUM_UNNECESSARY))); | |
7967168c HX |
4997 | } |
4998 | ||
14d7b812 JK |
4999 | void netif_set_tso_max_size(struct net_device *dev, unsigned int size); |
5000 | void netif_set_tso_max_segs(struct net_device *dev, unsigned int segs); | |
6df6398f JK |
5001 | void netif_inherit_tso_max(struct net_device *to, |
5002 | const struct net_device *from); | |
5003 | ||
7a7ffbab WCC |
5004 | static inline void skb_gso_error_unwind(struct sk_buff *skb, __be16 protocol, |
5005 | int pulled_hlen, u16 mac_offset, | |
5006 | int mac_len) | |
5007 | { | |
5008 | skb->protocol = protocol; | |
5009 | skb->encapsulation = 1; | |
5010 | skb_push(skb, pulled_hlen); | |
5011 | skb_reset_transport_header(skb); | |
5012 | skb->mac_header = mac_offset; | |
5013 | skb->network_header = skb->mac_header + mac_len; | |
5014 | skb->mac_len = mac_len; | |
5015 | } | |
5016 | ||
3c175784 SD |
5017 | static inline bool netif_is_macsec(const struct net_device *dev) |
5018 | { | |
5019 | return dev->priv_flags & IFF_MACSEC; | |
5020 | } | |
5021 | ||
b618aaa9 | 5022 | static inline bool netif_is_macvlan(const struct net_device *dev) |
a6cc0cfa JF |
5023 | { |
5024 | return dev->priv_flags & IFF_MACVLAN; | |
5025 | } | |
5026 | ||
b618aaa9 | 5027 | static inline bool netif_is_macvlan_port(const struct net_device *dev) |
2f33e7d5 MB |
5028 | { |
5029 | return dev->priv_flags & IFF_MACVLAN_PORT; | |
5030 | } | |
5031 | ||
b618aaa9 | 5032 | static inline bool netif_is_bond_master(const struct net_device *dev) |
8a7fbfab | 5033 | { |
5034 | return dev->flags & IFF_MASTER && dev->priv_flags & IFF_BONDING; | |
5035 | } | |
5036 | ||
b618aaa9 | 5037 | static inline bool netif_is_bond_slave(const struct net_device *dev) |
1765a575 JP |
5038 | { |
5039 | return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING; | |
5040 | } | |
5041 | ||
3bdc0eba BG |
5042 | static inline bool netif_supports_nofcs(struct net_device *dev) |
5043 | { | |
5044 | return dev->priv_flags & IFF_SUPP_NOFCS; | |
5045 | } | |
5046 | ||
d5256083 DB |
5047 | static inline bool netif_has_l3_rx_handler(const struct net_device *dev) |
5048 | { | |
5049 | return dev->priv_flags & IFF_L3MDEV_RX_HANDLER; | |
5050 | } | |
5051 | ||
007979ea | 5052 | static inline bool netif_is_l3_master(const struct net_device *dev) |
4e3c8992 | 5053 | { |
007979ea | 5054 | return dev->priv_flags & IFF_L3MDEV_MASTER; |
4e3c8992 DA |
5055 | } |
5056 | ||
fee6d4c7 DA |
5057 | static inline bool netif_is_l3_slave(const struct net_device *dev) |
5058 | { | |
5059 | return dev->priv_flags & IFF_L3MDEV_SLAVE; | |
5060 | } | |
5061 | ||
0894ae3f JP |
5062 | static inline bool netif_is_bridge_master(const struct net_device *dev) |
5063 | { | |
5064 | return dev->priv_flags & IFF_EBRIDGE; | |
5065 | } | |
5066 | ||
28f9ee22 VY |
5067 | static inline bool netif_is_bridge_port(const struct net_device *dev) |
5068 | { | |
5069 | return dev->priv_flags & IFF_BRIDGE_PORT; | |
5070 | } | |
5071 | ||
35d4e172 JP |
5072 | static inline bool netif_is_ovs_master(const struct net_device *dev) |
5073 | { | |
5074 | return dev->priv_flags & IFF_OPENVSWITCH; | |
5075 | } | |
5076 | ||
5be66141 JP |
5077 | static inline bool netif_is_ovs_port(const struct net_device *dev) |
5078 | { | |
5079 | return dev->priv_flags & IFF_OVS_DATAPATH; | |
5080 | } | |
5081 | ||
df23bb18 SB |
5082 | static inline bool netif_is_any_bridge_port(const struct net_device *dev) |
5083 | { | |
5084 | return netif_is_bridge_port(dev) || netif_is_ovs_port(dev); | |
5085 | } | |
5086 | ||
b618aaa9 | 5087 | static inline bool netif_is_team_master(const struct net_device *dev) |
c981e421 JP |
5088 | { |
5089 | return dev->priv_flags & IFF_TEAM; | |
5090 | } | |
5091 | ||
b618aaa9 | 5092 | static inline bool netif_is_team_port(const struct net_device *dev) |
f7f019ee JP |
5093 | { |
5094 | return dev->priv_flags & IFF_TEAM_PORT; | |
5095 | } | |
5096 | ||
b618aaa9 | 5097 | static inline bool netif_is_lag_master(const struct net_device *dev) |
7be61833 JP |
5098 | { |
5099 | return netif_is_bond_master(dev) || netif_is_team_master(dev); | |
5100 | } | |
5101 | ||
b618aaa9 | 5102 | static inline bool netif_is_lag_port(const struct net_device *dev) |
e0ba1414 JP |
5103 | { |
5104 | return netif_is_bond_slave(dev) || netif_is_team_port(dev); | |
5105 | } | |
5106 | ||
d4ab4286 KJ |
5107 | static inline bool netif_is_rxfh_configured(const struct net_device *dev) |
5108 | { | |
5109 | return dev->priv_flags & IFF_RXFH_CONFIGURED; | |
5110 | } | |
5111 | ||
30c8bd5a SS |
5112 | static inline bool netif_is_failover(const struct net_device *dev) |
5113 | { | |
5114 | return dev->priv_flags & IFF_FAILOVER; | |
5115 | } | |
5116 | ||
5117 | static inline bool netif_is_failover_slave(const struct net_device *dev) | |
5118 | { | |
5119 | return dev->priv_flags & IFF_FAILOVER_SLAVE; | |
5120 | } | |
5121 | ||
02875878 ED |
5122 | /* This device needs to keep skb dst for qdisc enqueue or ndo_start_xmit() */ |
5123 | static inline void netif_keep_dst(struct net_device *dev) | |
5124 | { | |
5125 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM); | |
5126 | } | |
5127 | ||
18d3df3e PA |
5128 | /* return true if dev can't cope with mtu frames that need vlan tag insertion */ |
5129 | static inline bool netif_reduces_vlan_mtu(struct net_device *dev) | |
5130 | { | |
5131 | /* TODO: reserve and use an additional IFF bit, if we get more users */ | |
01992152 | 5132 | return netif_is_macsec(dev); |
18d3df3e PA |
5133 | } |
5134 | ||
505d4f73 | 5135 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 | 5136 | |
571ba423 JP |
5137 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ |
5138 | ||
5139 | /* netdev_printk helpers, similar to dev_printk */ | |
5140 | ||
5141 | static inline const char *netdev_name(const struct net_device *dev) | |
5142 | { | |
c6f854d5 VF |
5143 | if (!dev->name[0] || strchr(dev->name, '%')) |
5144 | return "(unnamed net_device)"; | |
571ba423 JP |
5145 | return dev->name; |
5146 | } | |
5147 | ||
ccc7f496 VF |
5148 | static inline const char *netdev_reg_state(const struct net_device *dev) |
5149 | { | |
5150 | switch (dev->reg_state) { | |
5151 | case NETREG_UNINITIALIZED: return " (uninitialized)"; | |
5152 | case NETREG_REGISTERED: return ""; | |
5153 | case NETREG_UNREGISTERING: return " (unregistering)"; | |
5154 | case NETREG_UNREGISTERED: return " (unregistered)"; | |
5155 | case NETREG_RELEASED: return " (released)"; | |
5156 | case NETREG_DUMMY: return " (dummy)"; | |
5157 | } | |
5158 | ||
5159 | WARN_ONCE(1, "%s: unknown reg_state %d\n", dev->name, dev->reg_state); | |
5160 | return " (unknown)"; | |
5161 | } | |
5162 | ||
8909c9ad VK |
5163 | #define MODULE_ALIAS_NETDEV(device) \ |
5164 | MODULE_ALIAS("netdev-" device) | |
5165 | ||
571ba423 JP |
5166 | /* |
5167 | * netdev_WARN() acts like dev_printk(), but with the key difference | |
5168 | * of using a WARN/WARN_ON to get the message out, including the | |
5169 | * file/line information and a backtrace. | |
5170 | */ | |
5171 | #define netdev_WARN(dev, format, args...) \ | |
e1cfe3d0 | 5172 | WARN(1, "netdevice: %s%s: " format, netdev_name(dev), \ |
ccc7f496 | 5173 | netdev_reg_state(dev), ##args) |
571ba423 | 5174 | |
72dd831e | 5175 | #define netdev_WARN_ONCE(dev, format, args...) \ |
e1cfe3d0 | 5176 | WARN_ONCE(1, "netdevice: %s%s: " format, netdev_name(dev), \ |
375ef2b1 GP |
5177 | netdev_reg_state(dev), ##args) |
5178 | ||
900ff8c6 CW |
5179 | /* |
5180 | * The list of packet types we will receive (as opposed to discard) | |
5181 | * and the routines to invoke. | |
5182 | * | |
5183 | * Why 16. Because with 16 the only overlap we get on a hash of the | |
5184 | * low nibble of the protocol value is RARP/SNAP/X.25. | |
5185 | * | |
900ff8c6 | 5186 | * 0800 IP |
900ff8c6 CW |
5187 | * 0001 802.3 |
5188 | * 0002 AX.25 | |
5189 | * 0004 802.2 | |
5190 | * 8035 RARP | |
5191 | * 0005 SNAP | |
5192 | * 0805 X.25 | |
5193 | * 0806 ARP | |
5194 | * 8137 IPX | |
5195 | * 0009 Localtalk | |
5196 | * 86DD IPv6 | |
5197 | */ | |
5198 | #define PTYPE_HASH_SIZE (16) | |
5199 | #define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) | |
5200 | ||
744b8376 VO |
5201 | extern struct list_head ptype_all __read_mostly; |
5202 | extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly; | |
5203 | ||
4de83b88 MB |
5204 | extern struct net_device *blackhole_netdev; |
5205 | ||
6c1c5097 ED |
5206 | /* Note: Avoid these macros in fast path, prefer per-cpu or per-queue counters. */ |
5207 | #define DEV_STATS_INC(DEV, FIELD) atomic_long_inc(&(DEV)->stats.__##FIELD) | |
5208 | #define DEV_STATS_ADD(DEV, FIELD, VAL) \ | |
5209 | atomic_long_add((VAL), &(DEV)->stats.__##FIELD) | |
5210 | ||
385a154c | 5211 | #endif /* _LINUX_NETDEVICE_H */ |