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> |
a050c33f | 43 | |
a59e2ecb | 44 | #include <linux/netdev_features.h> |
77162022 | 45 | #include <linux/neighbour.h> |
607ca46e | 46 | #include <uapi/linux/netdevice.h> |
61bd3857 | 47 | #include <uapi/linux/if_bonding.h> |
e4c6734e | 48 | #include <uapi/linux/pkt_cls.h> |
d3d854fd | 49 | #include <uapi/linux/netdev.h> |
59cc1f61 | 50 | #include <linux/hashtable.h> |
406f42fa | 51 | #include <linux/rbtree.h> |
9ba74e6c | 52 | #include <net/net_trackers.h> |
5b87be9e | 53 | #include <net/net_debug.h> |
5b8285cc | 54 | #include <net/dropreason-core.h> |
a59e2ecb | 55 | |
115c1d6e | 56 | struct netpoll_info; |
313162d0 | 57 | struct device; |
cc69837f | 58 | struct ethtool_ops; |
66f72230 | 59 | struct kernel_hwtstamp_config; |
c1f19b51 | 60 | struct phy_device; |
2f657a60 | 61 | struct dsa_port; |
607259a6 | 62 | struct ip_tunnel_parm; |
30e9bb84 AT |
63 | struct macsec_context; |
64 | struct macsec_ops; | |
6264f58c JK |
65 | struct netdev_name_node; |
66 | struct sd_flow_limit; | |
e679c9c1 | 67 | struct sfp_bus; |
704232c2 JB |
68 | /* 802.11 specific */ |
69 | struct wireless_dev; | |
98a18b6f AA |
70 | /* 802.15.4 specific */ |
71 | struct wpan_dev; | |
03c57747 | 72 | struct mpls_dev; |
7c46a640 AD |
73 | /* UDP Tunnel offloads */ |
74 | struct udp_tunnel_info; | |
cc4e3835 JK |
75 | struct udp_tunnel_nic_info; |
76 | struct udp_tunnel_nic; | |
a7862b45 | 77 | struct bpf_prog; |
814abfab | 78 | struct xdp_buff; |
680ee045 JK |
79 | struct xdp_frame; |
80 | struct xdp_metadata_ops; | |
3d76a4d3 | 81 | struct xdp_md; |
1da177e4 | 82 | |
680ee045 JK |
83 | typedef u32 xdp_features_t; |
84 | ||
5198d545 | 85 | void synchronize_net(void); |
f629d208 JP |
86 | void netdev_set_default_ethtool_ops(struct net_device *dev, |
87 | const struct ethtool_ops *ops); | |
d9360708 | 88 | void netdev_sw_irq_coalesce_default_on(struct net_device *dev); |
d07d7507 | 89 | |
9a1654ba JP |
90 | /* Backlog congestion levels */ |
91 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
92 | #define NET_RX_DROP 1 /* packet dropped */ | |
93 | ||
7151affe TY |
94 | #define MAX_NEST_DEV 8 |
95 | ||
572a9d7b PM |
96 | /* |
97 | * Transmit return codes: transmit return codes originate from three different | |
98 | * namespaces: | |
99 | * | |
100 | * - qdisc return codes | |
101 | * - driver transmit return codes | |
102 | * - errno values | |
103 | * | |
104 | * Drivers are allowed to return any one of those in their hard_start_xmit() | |
105 | * function. Real network devices commonly used with qdiscs should only return | |
106 | * the driver transmit return codes though - when qdiscs are used, the actual | |
107 | * transmission happens asynchronously, so the value is not propagated to | |
5e82b4b2 BH |
108 | * higher layers. Virtual network devices transmit synchronously; in this case |
109 | * the driver transmit return codes are consumed by dev_queue_xmit(), and all | |
572a9d7b PM |
110 | * others are propagated to higher layers. |
111 | */ | |
112 | ||
113 | /* qdisc ->enqueue() return codes. */ | |
114 | #define NET_XMIT_SUCCESS 0x00 | |
9a1654ba JP |
115 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
116 | #define NET_XMIT_CN 0x02 /* congestion notification */ | |
9a1654ba | 117 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ |
1da177e4 | 118 | |
b9df3cb8 GR |
119 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
120 | * indicates that the device will soon be dropping packets, or already drops | |
121 | * some packets of the same priority; prompting us to send less aggressively. */ | |
572a9d7b | 122 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
1da177e4 LT |
123 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
124 | ||
dc1f8bf6 | 125 | /* Driver transmit return codes */ |
9a1654ba | 126 | #define NETDEV_TX_MASK 0xf0 |
572a9d7b | 127 | |
dc1f8bf6 | 128 | enum netdev_tx { |
572a9d7b | 129 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
9a1654ba JP |
130 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
131 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ | |
dc1f8bf6 SH |
132 | }; |
133 | typedef enum netdev_tx netdev_tx_t; | |
134 | ||
9a1654ba JP |
135 | /* |
136 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; | |
137 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. | |
138 | */ | |
139 | static inline bool dev_xmit_complete(int rc) | |
140 | { | |
141 | /* | |
142 | * Positive cases with an skb consumed by a driver: | |
143 | * - successful transmission (rc == NETDEV_TX_OK) | |
144 | * - error while transmitting (rc < 0) | |
145 | * - error while queueing to a different device (rc & NET_XMIT_MASK) | |
146 | */ | |
147 | if (likely(rc < NET_XMIT_MASK)) | |
148 | return true; | |
149 | ||
150 | return false; | |
151 | } | |
152 | ||
1da177e4 | 153 | /* |
5e82b4b2 | 154 | * Compute the worst-case header length according to the protocols |
1da177e4 LT |
155 | * used. |
156 | */ | |
fe2918b0 | 157 | |
c0eb4540 KS |
158 | #if defined(CONFIG_HYPERV_NET) |
159 | # define LL_MAX_HEADER 128 | |
160 | #elif defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) | |
8388e3da DM |
161 | # if defined(CONFIG_MAC80211_MESH) |
162 | # define LL_MAX_HEADER 128 | |
163 | # else | |
164 | # define LL_MAX_HEADER 96 | |
165 | # endif | |
1da177e4 | 166 | #else |
8388e3da | 167 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
168 | #endif |
169 | ||
d11ead75 BH |
170 | #if !IS_ENABLED(CONFIG_NET_IPIP) && !IS_ENABLED(CONFIG_NET_IPGRE) && \ |
171 | !IS_ENABLED(CONFIG_IPV6_SIT) && !IS_ENABLED(CONFIG_IPV6_TUNNEL) | |
1da177e4 LT |
172 | #define MAX_HEADER LL_MAX_HEADER |
173 | #else | |
174 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
175 | #endif | |
176 | ||
177 | /* | |
be1f3c2c BH |
178 | * Old network device statistics. Fields are native words |
179 | * (unsigned long) so they can be read and written atomically. | |
1da177e4 | 180 | */ |
fe2918b0 | 181 | |
6c1c5097 ED |
182 | #define NET_DEV_STAT(FIELD) \ |
183 | union { \ | |
184 | unsigned long FIELD; \ | |
185 | atomic_long_t __##FIELD; \ | |
186 | } | |
187 | ||
d94d9fee | 188 | struct net_device_stats { |
6c1c5097 ED |
189 | NET_DEV_STAT(rx_packets); |
190 | NET_DEV_STAT(tx_packets); | |
191 | NET_DEV_STAT(rx_bytes); | |
192 | NET_DEV_STAT(tx_bytes); | |
193 | NET_DEV_STAT(rx_errors); | |
194 | NET_DEV_STAT(tx_errors); | |
195 | NET_DEV_STAT(rx_dropped); | |
196 | NET_DEV_STAT(tx_dropped); | |
197 | NET_DEV_STAT(multicast); | |
198 | NET_DEV_STAT(collisions); | |
199 | NET_DEV_STAT(rx_length_errors); | |
200 | NET_DEV_STAT(rx_over_errors); | |
201 | NET_DEV_STAT(rx_crc_errors); | |
202 | NET_DEV_STAT(rx_frame_errors); | |
203 | NET_DEV_STAT(rx_fifo_errors); | |
204 | NET_DEV_STAT(rx_missed_errors); | |
205 | NET_DEV_STAT(tx_aborted_errors); | |
206 | NET_DEV_STAT(tx_carrier_errors); | |
207 | NET_DEV_STAT(tx_fifo_errors); | |
208 | NET_DEV_STAT(tx_heartbeat_errors); | |
209 | NET_DEV_STAT(tx_window_errors); | |
210 | NET_DEV_STAT(rx_compressed); | |
211 | NET_DEV_STAT(tx_compressed); | |
1da177e4 | 212 | }; |
6c1c5097 | 213 | #undef NET_DEV_STAT |
1da177e4 | 214 | |
625788b5 ED |
215 | /* per-cpu stats, allocated on demand. |
216 | * Try to fit them in a single cache line, for dev_get_stats() sake. | |
217 | */ | |
218 | struct net_device_core_stats { | |
6510ea97 SAS |
219 | unsigned long rx_dropped; |
220 | unsigned long tx_dropped; | |
221 | unsigned long rx_nohandler; | |
0e55546b | 222 | unsigned long rx_otherhost_dropped; |
6510ea97 | 223 | } __aligned(4 * sizeof(unsigned long)); |
1da177e4 LT |
224 | |
225 | #include <linux/cache.h> | |
226 | #include <linux/skbuff.h> | |
227 | ||
adc9300e | 228 | #ifdef CONFIG_RPS |
c5905afb | 229 | #include <linux/static_key.h> |
dc05360f ED |
230 | extern struct static_key_false rps_needed; |
231 | extern struct static_key_false rfs_needed; | |
adc9300e ED |
232 | #endif |
233 | ||
1da177e4 LT |
234 | struct neighbour; |
235 | struct neigh_parms; | |
236 | struct sk_buff; | |
237 | ||
f001fde5 JP |
238 | struct netdev_hw_addr { |
239 | struct list_head list; | |
406f42fa | 240 | struct rb_node node; |
f001fde5 JP |
241 | unsigned char addr[MAX_ADDR_LEN]; |
242 | unsigned char type; | |
ccffad25 JP |
243 | #define NETDEV_HW_ADDR_T_LAN 1 |
244 | #define NETDEV_HW_ADDR_T_SAN 2 | |
8e1b3884 TY |
245 | #define NETDEV_HW_ADDR_T_UNICAST 3 |
246 | #define NETDEV_HW_ADDR_T_MULTICAST 4 | |
22bedad3 | 247 | bool global_use; |
4cd729b0 | 248 | int sync_cnt; |
8f8f103d | 249 | int refcount; |
4543fbef | 250 | int synced; |
f001fde5 JP |
251 | struct rcu_head rcu_head; |
252 | }; | |
253 | ||
31278e71 JP |
254 | struct netdev_hw_addr_list { |
255 | struct list_head list; | |
256 | int count; | |
406f42fa GN |
257 | |
258 | /* Auxiliary tree for faster lookup on addition and deletion */ | |
259 | struct rb_root tree; | |
31278e71 JP |
260 | }; |
261 | ||
22bedad3 JP |
262 | #define netdev_hw_addr_list_count(l) ((l)->count) |
263 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) | |
264 | #define netdev_hw_addr_list_for_each(ha, l) \ | |
265 | list_for_each_entry(ha, &(l)->list, list) | |
32e7bfc4 | 266 | |
22bedad3 JP |
267 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
268 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) | |
269 | #define netdev_for_each_uc_addr(ha, dev) \ | |
270 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) | |
db01868b VO |
271 | #define netdev_for_each_synced_uc_addr(_ha, _dev) \ |
272 | netdev_for_each_uc_addr((_ha), (_dev)) \ | |
273 | if ((_ha)->sync_cnt) | |
6683ece3 | 274 | |
22bedad3 JP |
275 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
276 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) | |
18e225f2 | 277 | #define netdev_for_each_mc_addr(ha, dev) \ |
22bedad3 | 278 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
db01868b VO |
279 | #define netdev_for_each_synced_mc_addr(_ha, _dev) \ |
280 | netdev_for_each_mc_addr((_ha), (_dev)) \ | |
281 | if ((_ha)->sync_cnt) | |
6683ece3 | 282 | |
d94d9fee | 283 | struct hh_cache { |
5b3dc2f3 | 284 | unsigned int hh_len; |
3644f0ce | 285 | seqlock_t hh_lock; |
1da177e4 LT |
286 | |
287 | /* cached hardware header; allow for machine alignment needs. */ | |
288 | #define HH_DATA_MOD 16 | |
289 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 290 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
291 | #define HH_DATA_ALIGN(__len) \ |
292 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
293 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
294 | }; | |
295 | ||
5e82b4b2 | 296 | /* Reserve HH_DATA_MOD byte-aligned hard_header_len, but at least that much. |
1da177e4 LT |
297 | * Alternative is: |
298 | * dev->hard_header_len ? (dev->hard_header_len + | |
299 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
300 | * | |
301 | * We could use other alignment values, but we must maintain the | |
302 | * relationship HH alignment <= LL alignment. | |
303 | */ | |
304 | #define LL_RESERVED_SPACE(dev) \ | |
4b397c06 ED |
305 | ((((dev)->hard_header_len + READ_ONCE((dev)->needed_headroom)) \ |
306 | & ~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
1da177e4 | 307 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
4b397c06 ED |
308 | ((((dev)->hard_header_len + READ_ONCE((dev)->needed_headroom) + (extra)) \ |
309 | & ~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
1da177e4 | 310 | |
3b04ddde SH |
311 | struct header_ops { |
312 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
313 | unsigned short type, const void *daddr, | |
95c96174 | 314 | const void *saddr, unsigned int len); |
3b04ddde | 315 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); |
e69dd336 | 316 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh, __be16 type); |
3b04ddde SH |
317 | void (*cache_update)(struct hh_cache *hh, |
318 | const struct net_device *dev, | |
319 | const unsigned char *haddr); | |
2793a23a | 320 | bool (*validate)(const char *ll_header, unsigned int len); |
e78b2915 | 321 | __be16 (*parse_protocol)(const struct sk_buff *skb); |
3b04ddde SH |
322 | }; |
323 | ||
1da177e4 | 324 | /* These flag bits are private to the generic network queueing |
5e82b4b2 | 325 | * layer; they may not be explicitly referenced by any other |
1da177e4 LT |
326 | * code. |
327 | */ | |
328 | ||
d94d9fee | 329 | enum netdev_state_t { |
1da177e4 LT |
330 | __LINK_STATE_START, |
331 | __LINK_STATE_PRESENT, | |
1da177e4 | 332 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
333 | __LINK_STATE_LINKWATCH_PENDING, |
334 | __LINK_STATE_DORMANT, | |
eec517cd | 335 | __LINK_STATE_TESTING, |
1da177e4 LT |
336 | }; |
337 | ||
6312fe77 LR |
338 | struct gro_list { |
339 | struct list_head list; | |
340 | int count; | |
341 | }; | |
342 | ||
bea3348e | 343 | /* |
d9f37d01 LR |
344 | * size of gro hash buckets, must less than bit number of |
345 | * napi_struct::gro_bitmask | |
bea3348e | 346 | */ |
07d78363 | 347 | #define GRO_HASH_BUCKETS 8 |
d9f37d01 LR |
348 | |
349 | /* | |
350 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
351 | */ | |
bea3348e SH |
352 | struct napi_struct { |
353 | /* The poll_list must only be managed by the entity which | |
354 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
355 | * whoever atomically sets that bit can add this napi_struct | |
5e82b4b2 | 356 | * to the per-CPU poll_list, and whoever clears that bit |
bea3348e SH |
357 | * can remove from the list right before clearing the bit. |
358 | */ | |
359 | struct list_head poll_list; | |
360 | ||
361 | unsigned long state; | |
362 | int weight; | |
6f8b12d6 | 363 | int defer_hard_irqs_count; |
d9f37d01 | 364 | unsigned long gro_bitmask; |
bea3348e SH |
365 | int (*poll)(struct napi_struct *, int); |
366 | #ifdef CONFIG_NETPOLL | |
8c48eea3 | 367 | /* CPU actively polling if netpoll is configured */ |
bea3348e | 368 | int poll_owner; |
bea3348e | 369 | #endif |
8c48eea3 JK |
370 | /* CPU on which NAPI has been scheduled for processing */ |
371 | int list_owner; | |
5d38a079 | 372 | struct net_device *dev; |
6312fe77 | 373 | struct gro_list gro_hash[GRO_HASH_BUCKETS]; |
5d38a079 | 374 | struct sk_buff *skb; |
323ebb61 EC |
375 | struct list_head rx_list; /* Pending GRO_NORMAL skbs */ |
376 | int rx_count; /* length of rx_list */ | |
dd2d6604 | 377 | unsigned int napi_id; |
3b47d303 | 378 | struct hrtimer timer; |
dd2d6604 JK |
379 | struct task_struct *thread; |
380 | /* control-path-only fields follow */ | |
404f7c9e | 381 | struct list_head dev_list; |
af12fa6e | 382 | struct hlist_node napi_hash_node; |
bea3348e SH |
383 | }; |
384 | ||
d94d9fee | 385 | enum { |
7fd3253a BT |
386 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
387 | NAPI_STATE_MISSED, /* reschedule a napi */ | |
388 | NAPI_STATE_DISABLE, /* Disable pending */ | |
389 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ | |
390 | NAPI_STATE_LISTED, /* NAPI added to system lists */ | |
391 | NAPI_STATE_NO_BUSY_POLL, /* Do not add in napi_hash, no busy polling */ | |
392 | NAPI_STATE_IN_BUSY_POLL, /* sk_busy_loop() owns this NAPI */ | |
393 | NAPI_STATE_PREFER_BUSY_POLL, /* prefer busy-polling over softirq processing*/ | |
29863d41 | 394 | NAPI_STATE_THREADED, /* The poll is performed inside its own thread*/ |
cb038357 | 395 | NAPI_STATE_SCHED_THREADED, /* Napi is currently scheduled in threaded mode */ |
217f6974 ED |
396 | }; |
397 | ||
398 | enum { | |
7fd3253a BT |
399 | NAPIF_STATE_SCHED = BIT(NAPI_STATE_SCHED), |
400 | NAPIF_STATE_MISSED = BIT(NAPI_STATE_MISSED), | |
401 | NAPIF_STATE_DISABLE = BIT(NAPI_STATE_DISABLE), | |
402 | NAPIF_STATE_NPSVC = BIT(NAPI_STATE_NPSVC), | |
403 | NAPIF_STATE_LISTED = BIT(NAPI_STATE_LISTED), | |
404 | NAPIF_STATE_NO_BUSY_POLL = BIT(NAPI_STATE_NO_BUSY_POLL), | |
405 | NAPIF_STATE_IN_BUSY_POLL = BIT(NAPI_STATE_IN_BUSY_POLL), | |
406 | NAPIF_STATE_PREFER_BUSY_POLL = BIT(NAPI_STATE_PREFER_BUSY_POLL), | |
29863d41 | 407 | NAPIF_STATE_THREADED = BIT(NAPI_STATE_THREADED), |
cb038357 | 408 | NAPIF_STATE_SCHED_THREADED = BIT(NAPI_STATE_SCHED_THREADED), |
bea3348e SH |
409 | }; |
410 | ||
5b252f0c | 411 | enum gro_result { |
d1c76af9 HX |
412 | GRO_MERGED, |
413 | GRO_MERGED_FREE, | |
414 | GRO_HELD, | |
415 | GRO_NORMAL, | |
25393d3f | 416 | GRO_CONSUMED, |
d1c76af9 | 417 | }; |
5b252f0c | 418 | typedef enum gro_result gro_result_t; |
d1c76af9 | 419 | |
8a4eb573 JP |
420 | /* |
421 | * enum rx_handler_result - Possible return values for rx_handlers. | |
422 | * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it | |
423 | * further. | |
424 | * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in | |
425 | * case skb->dev was changed by rx_handler. | |
426 | * @RX_HANDLER_EXACT: Force exact delivery, no wildcard. | |
5e82b4b2 | 427 | * @RX_HANDLER_PASS: Do nothing, pass the skb as if no rx_handler was called. |
8a4eb573 JP |
428 | * |
429 | * rx_handlers are functions called from inside __netif_receive_skb(), to do | |
430 | * special processing of the skb, prior to delivery to protocol handlers. | |
431 | * | |
432 | * Currently, a net_device can only have a single rx_handler registered. Trying | |
433 | * to register a second rx_handler will return -EBUSY. | |
434 | * | |
435 | * To register a rx_handler on a net_device, use netdev_rx_handler_register(). | |
436 | * To unregister a rx_handler on a net_device, use | |
437 | * netdev_rx_handler_unregister(). | |
438 | * | |
439 | * Upon return, rx_handler is expected to tell __netif_receive_skb() what to | |
440 | * do with the skb. | |
441 | * | |
5e82b4b2 | 442 | * If the rx_handler consumed the skb in some way, it should return |
8a4eb573 | 443 | * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for |
5e82b4b2 | 444 | * the skb to be delivered in some other way. |
8a4eb573 JP |
445 | * |
446 | * If the rx_handler changed skb->dev, to divert the skb to another | |
447 | * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the | |
448 | * new device will be called if it exists. | |
449 | * | |
5e82b4b2 | 450 | * If the rx_handler decides the skb should be ignored, it should return |
8a4eb573 | 451 | * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that |
d93cf068 | 452 | * are registered on exact device (ptype->dev == skb->dev). |
8a4eb573 | 453 | * |
5e82b4b2 | 454 | * If the rx_handler didn't change skb->dev, but wants the skb to be normally |
8a4eb573 JP |
455 | * delivered, it should return RX_HANDLER_PASS. |
456 | * | |
457 | * A device without a registered rx_handler will behave as if rx_handler | |
458 | * returned RX_HANDLER_PASS. | |
459 | */ | |
460 | ||
461 | enum rx_handler_result { | |
462 | RX_HANDLER_CONSUMED, | |
463 | RX_HANDLER_ANOTHER, | |
464 | RX_HANDLER_EXACT, | |
465 | RX_HANDLER_PASS, | |
466 | }; | |
467 | typedef enum rx_handler_result rx_handler_result_t; | |
468 | typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb); | |
ab95bfe0 | 469 | |
f629d208 | 470 | void __napi_schedule(struct napi_struct *n); |
bc9ad166 | 471 | void __napi_schedule_irqoff(struct napi_struct *n); |
bea3348e | 472 | |
4d29515f | 473 | static inline bool napi_disable_pending(struct napi_struct *n) |
a0a46196 DM |
474 | { |
475 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
476 | } | |
477 | ||
7fd3253a BT |
478 | static inline bool napi_prefer_busy_poll(struct napi_struct *n) |
479 | { | |
480 | return test_bit(NAPI_STATE_PREFER_BUSY_POLL, &n->state); | |
481 | } | |
482 | ||
39e6c820 | 483 | bool napi_schedule_prep(struct napi_struct *n); |
bea3348e SH |
484 | |
485 | /** | |
486 | * napi_schedule - schedule NAPI poll | |
5e82b4b2 | 487 | * @n: NAPI context |
bea3348e SH |
488 | * |
489 | * Schedule NAPI poll routine to be called if it is not already | |
490 | * running. | |
491 | */ | |
492 | static inline void napi_schedule(struct napi_struct *n) | |
493 | { | |
494 | if (napi_schedule_prep(n)) | |
495 | __napi_schedule(n); | |
496 | } | |
497 | ||
bc9ad166 ED |
498 | /** |
499 | * napi_schedule_irqoff - schedule NAPI poll | |
5e82b4b2 | 500 | * @n: NAPI context |
bc9ad166 ED |
501 | * |
502 | * Variant of napi_schedule(), assuming hard irqs are masked. | |
503 | */ | |
504 | static inline void napi_schedule_irqoff(struct napi_struct *n) | |
505 | { | |
506 | if (napi_schedule_prep(n)) | |
507 | __napi_schedule_irqoff(n); | |
508 | } | |
509 | ||
bfe13f54 | 510 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
4d29515f | 511 | static inline bool napi_reschedule(struct napi_struct *napi) |
bfe13f54 RD |
512 | { |
513 | if (napi_schedule_prep(napi)) { | |
514 | __napi_schedule(napi); | |
4d29515f | 515 | return true; |
bfe13f54 | 516 | } |
4d29515f | 517 | return false; |
bfe13f54 RD |
518 | } |
519 | ||
bea3348e | 520 | /** |
3eb8eea2 JK |
521 | * napi_complete_done - NAPI processing complete |
522 | * @n: NAPI context | |
523 | * @work_done: number of packets processed | |
bea3348e | 524 | * |
3eb8eea2 JK |
525 | * Mark NAPI processing as complete. Should only be called if poll budget |
526 | * has not been completely consumed. | |
527 | * Prefer over napi_complete(). | |
364b6055 | 528 | * Return false if device should avoid rearming interrupts. |
bea3348e | 529 | */ |
3eb8eea2 JK |
530 | bool napi_complete_done(struct napi_struct *n, int work_done); |
531 | ||
364b6055 | 532 | static inline bool napi_complete(struct napi_struct *n) |
3b47d303 ED |
533 | { |
534 | return napi_complete_done(n, 0); | |
535 | } | |
bea3348e | 536 | |
5fdd2f0e WW |
537 | int dev_set_threaded(struct net_device *dev, bool threaded); |
538 | ||
bea3348e SH |
539 | /** |
540 | * napi_disable - prevent NAPI from scheduling | |
5e82b4b2 | 541 | * @n: NAPI context |
bea3348e SH |
542 | * |
543 | * Stop NAPI from being scheduled on this context. | |
544 | * Waits till any outstanding processing completes. | |
545 | */ | |
3b47d303 | 546 | void napi_disable(struct napi_struct *n); |
bea3348e | 547 | |
29863d41 | 548 | void napi_enable(struct napi_struct *n); |
bea3348e | 549 | |
c264c3de SH |
550 | /** |
551 | * napi_synchronize - wait until NAPI is not running | |
5e82b4b2 | 552 | * @n: NAPI context |
c264c3de SH |
553 | * |
554 | * Wait until NAPI is done being scheduled on this context. | |
555 | * Waits till any outstanding processing completes but | |
556 | * does not disable future activations. | |
557 | */ | |
558 | static inline void napi_synchronize(const struct napi_struct *n) | |
559 | { | |
facc432f AB |
560 | if (IS_ENABLED(CONFIG_SMP)) |
561 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
562 | msleep(1); | |
563 | else | |
564 | barrier(); | |
c264c3de | 565 | } |
c264c3de | 566 | |
6c5c9581 MK |
567 | /** |
568 | * napi_if_scheduled_mark_missed - if napi is running, set the | |
569 | * NAPIF_STATE_MISSED | |
570 | * @n: NAPI context | |
571 | * | |
572 | * If napi is running, set the NAPIF_STATE_MISSED, and return true if | |
573 | * NAPI is scheduled. | |
574 | **/ | |
575 | static inline bool napi_if_scheduled_mark_missed(struct napi_struct *n) | |
576 | { | |
577 | unsigned long val, new; | |
578 | ||
b9030780 | 579 | val = READ_ONCE(n->state); |
6c5c9581 | 580 | do { |
6c5c9581 MK |
581 | if (val & NAPIF_STATE_DISABLE) |
582 | return true; | |
583 | ||
584 | if (!(val & NAPIF_STATE_SCHED)) | |
585 | return false; | |
586 | ||
587 | new = val | NAPIF_STATE_MISSED; | |
b9030780 | 588 | } while (!try_cmpxchg(&n->state, &val, new)); |
6c5c9581 MK |
589 | |
590 | return true; | |
591 | } | |
592 | ||
d94d9fee | 593 | enum netdev_queue_state_t { |
73466498 TH |
594 | __QUEUE_STATE_DRV_XOFF, |
595 | __QUEUE_STATE_STACK_XOFF, | |
c3f26a26 | 596 | __QUEUE_STATE_FROZEN, |
79d16385 | 597 | }; |
8e2f1a63 DB |
598 | |
599 | #define QUEUE_STATE_DRV_XOFF (1 << __QUEUE_STATE_DRV_XOFF) | |
600 | #define QUEUE_STATE_STACK_XOFF (1 << __QUEUE_STATE_STACK_XOFF) | |
601 | #define QUEUE_STATE_FROZEN (1 << __QUEUE_STATE_FROZEN) | |
602 | ||
603 | #define QUEUE_STATE_ANY_XOFF (QUEUE_STATE_DRV_XOFF | QUEUE_STATE_STACK_XOFF) | |
604 | #define QUEUE_STATE_ANY_XOFF_OR_FROZEN (QUEUE_STATE_ANY_XOFF | \ | |
605 | QUEUE_STATE_FROZEN) | |
606 | #define QUEUE_STATE_DRV_XOFF_OR_FROZEN (QUEUE_STATE_DRV_XOFF | \ | |
607 | QUEUE_STATE_FROZEN) | |
608 | ||
73466498 TH |
609 | /* |
610 | * __QUEUE_STATE_DRV_XOFF is used by drivers to stop the transmit queue. The | |
611 | * netif_tx_* functions below are used to manipulate this flag. The | |
612 | * __QUEUE_STATE_STACK_XOFF flag is used by the stack to stop the transmit | |
613 | * queue independently. The netif_xmit_*stopped functions below are called | |
614 | * to check if the queue has been stopped by the driver or stack (either | |
615 | * of the XOFF bits are set in the state). Drivers should not need to call | |
616 | * netif_xmit*stopped functions, they should only be using netif_tx_*. | |
617 | */ | |
79d16385 | 618 | |
bb949fbd | 619 | struct netdev_queue { |
6a321cb3 | 620 | /* |
5e82b4b2 | 621 | * read-mostly part |
6a321cb3 | 622 | */ |
bb949fbd | 623 | struct net_device *dev; |
0b688f24 ED |
624 | netdevice_tracker dev_tracker; |
625 | ||
46e5da40 | 626 | struct Qdisc __rcu *qdisc; |
d636fc5d | 627 | struct Qdisc __rcu *qdisc_sleeping; |
ccf5ff69 | 628 | #ifdef CONFIG_SYSFS |
1d24eb48 TH |
629 | struct kobject kobj; |
630 | #endif | |
f2cd2d3e ED |
631 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
632 | int numa_node; | |
633 | #endif | |
c0ef079c FW |
634 | unsigned long tx_maxrate; |
635 | /* | |
636 | * Number of TX timeouts for this queue | |
637 | * (/sys/class/net/DEV/Q/trans_timeout) | |
638 | */ | |
8160fb43 | 639 | atomic_long_t trans_timeout; |
ffcfe25b AD |
640 | |
641 | /* Subordinate device that the queue has been assigned to */ | |
642 | struct net_device *sb_dev; | |
661b8d1b | 643 | #ifdef CONFIG_XDP_SOCKETS |
1742b3d5 | 644 | struct xsk_buff_pool *pool; |
661b8d1b | 645 | #endif |
6a321cb3 | 646 | /* |
5e82b4b2 | 647 | * write-mostly part |
6a321cb3 ED |
648 | */ |
649 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
650 | int xmit_lock_owner; | |
9d21493b | 651 | /* |
9b36627a | 652 | * Time (in jiffies) of last Tx |
9d21493b ED |
653 | */ |
654 | unsigned long trans_start; | |
ccf5ff69 | 655 | |
114cf580 TH |
656 | unsigned long state; |
657 | ||
658 | #ifdef CONFIG_BQL | |
659 | struct dql dql; | |
660 | #endif | |
e8a0464c | 661 | } ____cacheline_aligned_in_smp; |
bb949fbd | 662 | |
79134e6c | 663 | extern int sysctl_fb_tunnels_only_for_init_net; |
856c395c | 664 | extern int sysctl_devconf_inherit_init_net; |
79134e6c | 665 | |
316cdaa1 MB |
666 | /* |
667 | * sysctl_fb_tunnels_only_for_init_net == 0 : For all netns | |
668 | * == 1 : For initns only | |
669 | * == 2 : For none. | |
670 | */ | |
79134e6c ED |
671 | static inline bool net_has_fallback_tunnels(const struct net *net) |
672 | { | |
af67508e KI |
673 | #if IS_ENABLED(CONFIG_SYSCTL) |
674 | int fb_tunnels_only_for_init_net = READ_ONCE(sysctl_fb_tunnels_only_for_init_net); | |
675 | ||
676 | return !fb_tunnels_only_for_init_net || | |
677 | (net_eq(net, &init_net) && fb_tunnels_only_for_init_net == 1); | |
678 | #else | |
679 | return true; | |
680 | #endif | |
79134e6c ED |
681 | } |
682 | ||
a5612ca1 KI |
683 | static inline int net_inherit_devconf(void) |
684 | { | |
685 | #if IS_ENABLED(CONFIG_SYSCTL) | |
686 | return READ_ONCE(sysctl_devconf_inherit_init_net); | |
687 | #else | |
688 | return 0; | |
689 | #endif | |
79134e6c ED |
690 | } |
691 | ||
f2cd2d3e ED |
692 | static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) |
693 | { | |
694 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
695 | return q->numa_node; | |
696 | #else | |
b236da69 | 697 | return NUMA_NO_NODE; |
f2cd2d3e ED |
698 | #endif |
699 | } | |
700 | ||
701 | static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node) | |
702 | { | |
703 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
704 | q->numa_node = node; | |
705 | #endif | |
706 | } | |
707 | ||
df334545 | 708 | #ifdef CONFIG_RPS |
0a9627f2 TH |
709 | /* |
710 | * This structure holds an RPS map which can be of variable length. The | |
711 | * map is an array of CPUs. | |
712 | */ | |
713 | struct rps_map { | |
714 | unsigned int len; | |
715 | struct rcu_head rcu; | |
bb4cf02d | 716 | u16 cpus[]; |
0a9627f2 | 717 | }; |
60b778ce | 718 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + ((_num) * sizeof(u16))) |
0a9627f2 | 719 | |
fec5e652 | 720 | /* |
c445477d BH |
721 | * The rps_dev_flow structure contains the mapping of a flow to a CPU, the |
722 | * tail pointer for that CPU's input queue at the time of last enqueue, and | |
723 | * a hardware filter index. | |
fec5e652 TH |
724 | */ |
725 | struct rps_dev_flow { | |
726 | u16 cpu; | |
c445477d | 727 | u16 filter; |
fec5e652 TH |
728 | unsigned int last_qtail; |
729 | }; | |
c445477d | 730 | #define RPS_NO_FILTER 0xffff |
fec5e652 TH |
731 | |
732 | /* | |
733 | * The rps_dev_flow_table structure contains a table of flow mappings. | |
734 | */ | |
735 | struct rps_dev_flow_table { | |
736 | unsigned int mask; | |
737 | struct rcu_head rcu; | |
bb4cf02d | 738 | struct rps_dev_flow flows[]; |
fec5e652 TH |
739 | }; |
740 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ | |
60b778ce | 741 | ((_num) * sizeof(struct rps_dev_flow))) |
fec5e652 TH |
742 | |
743 | /* | |
744 | * The rps_sock_flow_table contains mappings of flows to the last CPU | |
745 | * on which they were processed by the application (set in recvmsg). | |
5e82b4b2 BH |
746 | * Each entry is a 32bit value. Upper part is the high-order bits |
747 | * of flow hash, lower part is CPU number. | |
567e4b79 | 748 | * rps_cpu_mask is used to partition the space, depending on number of |
5e82b4b2 BH |
749 | * possible CPUs : rps_cpu_mask = roundup_pow_of_two(nr_cpu_ids) - 1 |
750 | * For example, if 64 CPUs are possible, rps_cpu_mask = 0x3f, | |
567e4b79 | 751 | * meaning we use 32-6=26 bits for the hash. |
fec5e652 TH |
752 | */ |
753 | struct rps_sock_flow_table { | |
567e4b79 | 754 | u32 mask; |
93c1af6c | 755 | |
bb4cf02d | 756 | u32 ents[] ____cacheline_aligned_in_smp; |
fec5e652 | 757 | }; |
567e4b79 | 758 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (offsetof(struct rps_sock_flow_table, ents[_num])) |
fec5e652 TH |
759 | |
760 | #define RPS_NO_CPU 0xffff | |
761 | ||
567e4b79 ED |
762 | extern u32 rps_cpu_mask; |
763 | extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; | |
764 | ||
fec5e652 TH |
765 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, |
766 | u32 hash) | |
767 | { | |
768 | if (table && hash) { | |
567e4b79 ED |
769 | unsigned int index = hash & table->mask; |
770 | u32 val = hash & ~rps_cpu_mask; | |
fec5e652 | 771 | |
5e82b4b2 | 772 | /* We only give a hint, preemption can change CPU under us */ |
567e4b79 | 773 | val |= raw_smp_processor_id(); |
fec5e652 | 774 | |
5c3b74a9 ED |
775 | /* The following WRITE_ONCE() is paired with the READ_ONCE() |
776 | * here, and another one in get_rps_cpu(). | |
777 | */ | |
778 | if (READ_ONCE(table->ents[index]) != val) | |
779 | WRITE_ONCE(table->ents[index], val); | |
fec5e652 TH |
780 | } |
781 | } | |
782 | ||
c445477d | 783 | #ifdef CONFIG_RFS_ACCEL |
f629d208 JP |
784 | bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, u32 flow_id, |
785 | u16 filter_id); | |
c445477d | 786 | #endif |
a953be53 | 787 | #endif /* CONFIG_RPS */ |
c445477d | 788 | |
044ab86d AT |
789 | /* XPS map type and offset of the xps map within net_device->xps_maps[]. */ |
790 | enum xps_map_type { | |
791 | XPS_CPUS = 0, | |
792 | XPS_RXQS, | |
793 | XPS_MAPS_MAX, | |
794 | }; | |
795 | ||
bf264145 TH |
796 | #ifdef CONFIG_XPS |
797 | /* | |
798 | * This structure holds an XPS map which can be of variable length. The | |
799 | * map is an array of queues. | |
800 | */ | |
801 | struct xps_map { | |
802 | unsigned int len; | |
803 | unsigned int alloc_len; | |
804 | struct rcu_head rcu; | |
bb4cf02d | 805 | u16 queues[]; |
bf264145 | 806 | }; |
60b778ce | 807 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + ((_num) * sizeof(u16))) |
c59f419b HD |
808 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_ALIGN(offsetof(struct xps_map, queues[1])) \ |
809 | - sizeof(struct xps_map)) / sizeof(u16)) | |
bf264145 TH |
810 | |
811 | /* | |
812 | * This structure holds all XPS maps for device. Maps are indexed by CPU. | |
255c04a8 | 813 | * |
5478fcd0 AT |
814 | * We keep track of the number of cpus/rxqs used when the struct is allocated, |
815 | * in nr_ids. This will help not accessing out-of-bound memory. | |
816 | * | |
255c04a8 AT |
817 | * We keep track of the number of traffic classes used when the struct is |
818 | * allocated, in num_tc. This will be used to navigate the maps, to ensure we're | |
819 | * not crossing its upper bound, as the original dev->num_tc can be updated in | |
820 | * the meantime. | |
bf264145 TH |
821 | */ |
822 | struct xps_dev_maps { | |
823 | struct rcu_head rcu; | |
5478fcd0 | 824 | unsigned int nr_ids; |
255c04a8 | 825 | s16 num_tc; |
bb4cf02d | 826 | struct xps_map __rcu *attr_map[]; /* Either CPUs map or RXQs map */ |
bf264145 | 827 | }; |
80d19669 AN |
828 | |
829 | #define XPS_CPU_DEV_MAPS_SIZE(_tcs) (sizeof(struct xps_dev_maps) + \ | |
184c449f | 830 | (nr_cpu_ids * (_tcs) * sizeof(struct xps_map *))) |
80d19669 AN |
831 | |
832 | #define XPS_RXQ_DEV_MAPS_SIZE(_tcs, _rxqs) (sizeof(struct xps_dev_maps) +\ | |
833 | (_rxqs * (_tcs) * sizeof(struct xps_map *))) | |
834 | ||
bf264145 TH |
835 | #endif /* CONFIG_XPS */ |
836 | ||
4f57c087 JF |
837 | #define TC_MAX_QUEUE 16 |
838 | #define TC_BITMASK 15 | |
839 | /* HW offloaded queuing disciplines txq count and offset maps */ | |
840 | struct netdev_tc_txq { | |
841 | u16 count; | |
842 | u16 offset; | |
843 | }; | |
844 | ||
68bad94e NP |
845 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
846 | /* | |
847 | * This structure is to hold information about the device | |
848 | * configured to run FCoE protocol stack. | |
849 | */ | |
850 | struct netdev_fcoe_hbainfo { | |
851 | char manufacturer[64]; | |
852 | char serial_number[64]; | |
853 | char hardware_version[64]; | |
854 | char driver_version[64]; | |
855 | char optionrom_version[64]; | |
856 | char firmware_version[64]; | |
857 | char model[256]; | |
858 | char model_description[256]; | |
859 | }; | |
860 | #endif | |
861 | ||
02637fce | 862 | #define MAX_PHYS_ITEM_ID_LEN 32 |
66b52b0d | 863 | |
02637fce JP |
864 | /* This structure holds a unique identifier to identify some |
865 | * physical item (port for example) used by a netdevice. | |
66b52b0d | 866 | */ |
02637fce JP |
867 | struct netdev_phys_item_id { |
868 | unsigned char id[MAX_PHYS_ITEM_ID_LEN]; | |
66b52b0d JP |
869 | unsigned char id_len; |
870 | }; | |
871 | ||
d754f98b SF |
872 | static inline bool netdev_phys_item_id_same(struct netdev_phys_item_id *a, |
873 | struct netdev_phys_item_id *b) | |
874 | { | |
875 | return a->id_len == b->id_len && | |
876 | memcmp(a->id, b->id, a->id_len) == 0; | |
877 | } | |
878 | ||
99932d4f | 879 | typedef u16 (*select_queue_fallback_t)(struct net_device *dev, |
8ec56fc3 AD |
880 | struct sk_buff *skb, |
881 | struct net_device *sb_dev); | |
99932d4f | 882 | |
ddb94eaf PNA |
883 | enum net_device_path_type { |
884 | DEV_PATH_ETHERNET = 0, | |
e4417d69 | 885 | DEV_PATH_VLAN, |
ec9d16ba | 886 | DEV_PATH_BRIDGE, |
f6efc675 | 887 | DEV_PATH_PPPOE, |
0994d492 | 888 | DEV_PATH_DSA, |
a333215e | 889 | DEV_PATH_MTK_WDMA, |
ddb94eaf PNA |
890 | }; |
891 | ||
892 | struct net_device_path { | |
893 | enum net_device_path_type type; | |
894 | const struct net_device *dev; | |
e4417d69 PNA |
895 | union { |
896 | struct { | |
897 | u16 id; | |
898 | __be16 proto; | |
f6efc675 | 899 | u8 h_dest[ETH_ALEN]; |
e4417d69 | 900 | } encap; |
bcf2766b FF |
901 | struct { |
902 | enum { | |
903 | DEV_PATH_BR_VLAN_KEEP, | |
904 | DEV_PATH_BR_VLAN_TAG, | |
905 | DEV_PATH_BR_VLAN_UNTAG, | |
26267bf9 | 906 | DEV_PATH_BR_VLAN_UNTAG_HW, |
bcf2766b FF |
907 | } vlan_mode; |
908 | u16 vlan_id; | |
909 | __be16 vlan_proto; | |
910 | } bridge; | |
0994d492 FF |
911 | struct { |
912 | int port; | |
913 | u16 proto; | |
914 | } dsa; | |
a333215e FF |
915 | struct { |
916 | u8 wdma_idx; | |
917 | u8 queue; | |
918 | u16 wcid; | |
919 | u8 bss; | |
920 | } mtk_wdma; | |
e4417d69 | 921 | }; |
ddb94eaf PNA |
922 | }; |
923 | ||
924 | #define NET_DEVICE_PATH_STACK_MAX 5 | |
bcf2766b | 925 | #define NET_DEVICE_PATH_VLAN_MAX 2 |
ddb94eaf PNA |
926 | |
927 | struct net_device_path_stack { | |
928 | int num_paths; | |
929 | struct net_device_path path[NET_DEVICE_PATH_STACK_MAX]; | |
930 | }; | |
931 | ||
932 | struct net_device_path_ctx { | |
933 | const struct net_device *dev; | |
cf2df74e | 934 | u8 daddr[ETH_ALEN]; |
bcf2766b FF |
935 | |
936 | int num_vlans; | |
937 | struct { | |
938 | u16 id; | |
939 | __be16 proto; | |
940 | } vlan[NET_DEVICE_PATH_VLAN_MAX]; | |
ddb94eaf PNA |
941 | }; |
942 | ||
2572ac53 | 943 | enum tc_setup_type { |
aac4daa8 | 944 | TC_QUERY_CAPS, |
575ed7d3 | 945 | TC_SETUP_QDISC_MQPRIO, |
a1b7c5fd | 946 | TC_SETUP_CLSU32, |
5b33f488 | 947 | TC_SETUP_CLSFLOWER, |
ade9b658 | 948 | TC_SETUP_CLSMATCHALL, |
332ae8e2 | 949 | TC_SETUP_CLSBPF, |
8c4083b3 | 950 | TC_SETUP_BLOCK, |
8521db4c | 951 | TC_SETUP_QDISC_CBS, |
602f3baf | 952 | TC_SETUP_QDISC_RED, |
7fdb61b4 | 953 | TC_SETUP_QDISC_PRIO, |
f971b132 | 954 | TC_SETUP_QDISC_MQ, |
25db26a9 | 955 | TC_SETUP_QDISC_ETF, |
98b0e5f6 | 956 | TC_SETUP_ROOT_QDISC, |
890d8d23 | 957 | TC_SETUP_QDISC_GRED, |
9c66d156 | 958 | TC_SETUP_QDISC_TAPRIO, |
c29f74e0 | 959 | TC_SETUP_FT, |
d35eb52b | 960 | TC_SETUP_QDISC_ETS, |
ef6aadcc | 961 | TC_SETUP_QDISC_TBF, |
aaca9408 | 962 | TC_SETUP_QDISC_FIFO, |
d03b195b | 963 | TC_SETUP_QDISC_HTB, |
8cbfe939 | 964 | TC_SETUP_ACT, |
16e5cc64 JF |
965 | }; |
966 | ||
f4e63525 JK |
967 | /* These structures hold the attributes of bpf state that are being passed |
968 | * to the netdevice through the bpf op. | |
a7862b45 | 969 | */ |
f4e63525 | 970 | enum bpf_netdev_command { |
a7862b45 BB |
971 | /* Set or clear a bpf program used in the earliest stages of packet |
972 | * rx. The prog will have been loaded as BPF_PROG_TYPE_XDP. The callee | |
973 | * is responsible for calling bpf_prog_put on any old progs that are | |
974 | * stored. In case of error, the callee need not release the new prog | |
975 | * reference, but on success it takes ownership and must bpf_prog_put | |
976 | * when it is no longer used. | |
977 | */ | |
978 | XDP_SETUP_PROG, | |
ee5d032f | 979 | XDP_SETUP_PROG_HW, |
ab3f0063 | 980 | /* BPF program for offload callbacks, invoked at program load time. */ |
a3884572 JK |
981 | BPF_OFFLOAD_MAP_ALLOC, |
982 | BPF_OFFLOAD_MAP_FREE, | |
1742b3d5 | 983 | XDP_SETUP_XSK_POOL, |
a7862b45 BB |
984 | }; |
985 | ||
cae1927c | 986 | struct bpf_prog_offload_ops; |
ddf9f970 | 987 | struct netlink_ext_ack; |
74515c57 | 988 | struct xdp_umem; |
75ccae62 | 989 | struct xdp_dev_bulk_queue; |
aa8d3a71 | 990 | struct bpf_xdp_link; |
ddf9f970 | 991 | |
7f0a8382 AN |
992 | enum bpf_xdp_mode { |
993 | XDP_MODE_SKB = 0, | |
994 | XDP_MODE_DRV = 1, | |
995 | XDP_MODE_HW = 2, | |
996 | __MAX_XDP_MODE | |
997 | }; | |
998 | ||
999 | struct bpf_xdp_entity { | |
1000 | struct bpf_prog *prog; | |
aa8d3a71 | 1001 | struct bpf_xdp_link *link; |
7f0a8382 | 1002 | }; |
ddf9f970 | 1003 | |
f4e63525 JK |
1004 | struct netdev_bpf { |
1005 | enum bpf_netdev_command command; | |
a7862b45 BB |
1006 | union { |
1007 | /* XDP_SETUP_PROG */ | |
ddf9f970 | 1008 | struct { |
32d60277 | 1009 | u32 flags; |
ddf9f970 JK |
1010 | struct bpf_prog *prog; |
1011 | struct netlink_ext_ack *extack; | |
1012 | }; | |
a3884572 JK |
1013 | /* BPF_OFFLOAD_MAP_ALLOC, BPF_OFFLOAD_MAP_FREE */ |
1014 | struct { | |
1015 | struct bpf_offloaded_map *offmap; | |
1016 | }; | |
1742b3d5 | 1017 | /* XDP_SETUP_XSK_POOL */ |
74515c57 | 1018 | struct { |
1742b3d5 | 1019 | struct xsk_buff_pool *pool; |
f8ebfaf6 | 1020 | u16 queue_id; |
74515c57 | 1021 | } xsk; |
a7862b45 BB |
1022 | }; |
1023 | }; | |
16e5cc64 | 1024 | |
9116e5e2 MK |
1025 | /* Flags for ndo_xsk_wakeup. */ |
1026 | #define XDP_WAKEUP_RX (1 << 0) | |
1027 | #define XDP_WAKEUP_TX (1 << 1) | |
1028 | ||
d77e38e6 SK |
1029 | #ifdef CONFIG_XFRM_OFFLOAD |
1030 | struct xfrmdev_ops { | |
7681a4f5 | 1031 | int (*xdo_dev_state_add) (struct xfrm_state *x, struct netlink_ext_ack *extack); |
d77e38e6 SK |
1032 | void (*xdo_dev_state_delete) (struct xfrm_state *x); |
1033 | void (*xdo_dev_state_free) (struct xfrm_state *x); | |
1034 | bool (*xdo_dev_offload_ok) (struct sk_buff *skb, | |
1035 | struct xfrm_state *x); | |
50bd870a | 1036 | void (*xdo_dev_state_advance_esn) (struct xfrm_state *x); |
f3da86dc | 1037 | void (*xdo_dev_state_update_curlft) (struct xfrm_state *x); |
3089386d | 1038 | int (*xdo_dev_policy_add) (struct xfrm_policy *x, struct netlink_ext_ack *extack); |
919e43fa LR |
1039 | void (*xdo_dev_policy_delete) (struct xfrm_policy *x); |
1040 | void (*xdo_dev_policy_free) (struct xfrm_policy *x); | |
d77e38e6 SK |
1041 | }; |
1042 | #endif | |
1043 | ||
6c557001 FW |
1044 | struct dev_ifalias { |
1045 | struct rcu_head rcuhead; | |
1046 | char ifalias[]; | |
1047 | }; | |
1048 | ||
b473b0d2 | 1049 | struct devlink; |
da68b4ad | 1050 | struct tlsdev_ops; |
b473b0d2 | 1051 | |
93642e14 JP |
1052 | struct netdev_net_notifier { |
1053 | struct list_head list; | |
1054 | struct notifier_block *nb; | |
1055 | }; | |
1056 | ||
d314774c SH |
1057 | /* |
1058 | * This structure defines the management hooks for network devices. | |
00829823 SH |
1059 | * The following hooks can be defined; unless noted otherwise, they are |
1060 | * optional and can be filled with a null pointer. | |
d314774c SH |
1061 | * |
1062 | * int (*ndo_init)(struct net_device *dev); | |
5e82b4b2 BH |
1063 | * This function is called once when a network device is registered. |
1064 | * The network device can use this for any late stage initialization | |
1065 | * or semantic validation. It can fail with an error code which will | |
1066 | * be propagated back to register_netdev. | |
d314774c SH |
1067 | * |
1068 | * void (*ndo_uninit)(struct net_device *dev); | |
1069 | * This function is called when device is unregistered or when registration | |
1070 | * fails. It is not called if init fails. | |
1071 | * | |
1072 | * int (*ndo_open)(struct net_device *dev); | |
5e82b4b2 | 1073 | * This function is called when a network device transitions to the up |
d314774c SH |
1074 | * state. |
1075 | * | |
1076 | * int (*ndo_stop)(struct net_device *dev); | |
5e82b4b2 | 1077 | * This function is called when a network device transitions to the down |
d314774c SH |
1078 | * state. |
1079 | * | |
dc1f8bf6 SH |
1080 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
1081 | * struct net_device *dev); | |
00829823 | 1082 | * Called when a packet needs to be transmitted. |
e79d8429 RR |
1083 | * Returns NETDEV_TX_OK. Can return NETDEV_TX_BUSY, but you should stop |
1084 | * the queue before that can happen; it's for obsolete devices and weird | |
1085 | * corner cases, but the stack really does a non-trivial amount | |
1086 | * of useless work if you return NETDEV_TX_BUSY. | |
5e82b4b2 | 1087 | * Required; cannot be NULL. |
00829823 | 1088 | * |
1a2a1444 DM |
1089 | * netdev_features_t (*ndo_features_check)(struct sk_buff *skb, |
1090 | * struct net_device *dev | |
1091 | * netdev_features_t features); | |
1092 | * Called by core transmit path to determine if device is capable of | |
1093 | * performing offload operations on a given packet. This is to give | |
1094 | * the device an opportunity to implement any restrictions that cannot | |
1095 | * be otherwise expressed by feature flags. The check is called with | |
1096 | * the set of features that the stack has calculated and it returns | |
1097 | * those the driver believes to be appropriate. | |
cdba756f | 1098 | * |
f663dd9a | 1099 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb, |
a350ecce | 1100 | * struct net_device *sb_dev); |
5e82b4b2 | 1101 | * Called to decide which queue to use when device supports multiple |
00829823 SH |
1102 | * transmit queues. |
1103 | * | |
d314774c SH |
1104 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
1105 | * This function is called to allow device receiver to make | |
5e82b4b2 | 1106 | * changes to configuration when multicast or promiscuous is enabled. |
d314774c SH |
1107 | * |
1108 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
1109 | * This function is called device changes address list filtering. | |
01789349 | 1110 | * If driver handles unicast address filtering, it should set |
5e82b4b2 | 1111 | * IFF_UNICAST_FLT in its priv_flags. |
d314774c SH |
1112 | * |
1113 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
1114 | * This function is called when the Media Access Control address | |
37b607c5 | 1115 | * needs to be changed. If this interface is not defined, the |
5e82b4b2 | 1116 | * MAC address can not be changed. |
d314774c SH |
1117 | * |
1118 | * int (*ndo_validate_addr)(struct net_device *dev); | |
1119 | * Test if Media Access Control address is valid for the device. | |
1120 | * | |
1121 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
3d9d00bd AB |
1122 | * Old-style ioctl entry point. This is used internally by the |
1123 | * appletalk and ieee802154 subsystems but is no longer called by | |
1124 | * the device ioctl handler. | |
1125 | * | |
1126 | * int (*ndo_siocbond)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
1127 | * Used by the bonding driver for its device specific ioctls: | |
1128 | * SIOCBONDENSLAVE, SIOCBONDRELEASE, SIOCBONDSETHWADDR, SIOCBONDCHANGEACTIVE, | |
1129 | * SIOCBONDSLAVEINFOQUERY, and SIOCBONDINFOQUERY | |
d314774c | 1130 | * |
a7605370 AB |
1131 | * * int (*ndo_eth_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); |
1132 | * Called for ethernet specific ioctls: SIOCGMIIPHY, SIOCGMIIREG, | |
1133 | * SIOCSMIIREG, SIOCSHWTSTAMP and SIOCGHWTSTAMP. | |
1134 | * | |
d314774c SH |
1135 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); |
1136 | * Used to set network devices bus interface parameters. This interface | |
5e82b4b2 | 1137 | * is retained for legacy reasons; new devices should use the bus |
d314774c SH |
1138 | * interface (PCI) for low level management. |
1139 | * | |
1140 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
1141 | * Called when a user wants to change the Maximum Transfer Unit | |
db46a0e1 | 1142 | * of a device. |
d314774c | 1143 | * |
0290bd29 | 1144 | * void (*ndo_tx_timeout)(struct net_device *dev, unsigned int txqueue); |
5e82b4b2 | 1145 | * Callback used when the transmitter has not made any progress |
d314774c SH |
1146 | * for dev->watchdog ticks. |
1147 | * | |
bc1f4470 | 1148 | * void (*ndo_get_stats64)(struct net_device *dev, |
1149 | * struct rtnl_link_stats64 *storage); | |
d308e38f | 1150 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
d314774c | 1151 | * Called when a user wants to get the network device usage |
be1f3c2c | 1152 | * statistics. Drivers must do one of the following: |
3cfde79c BH |
1153 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
1154 | * rtnl_link_stats64 structure passed by the caller. | |
82695d9b | 1155 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
be1f3c2c BH |
1156 | * (which should normally be dev->stats) and return a pointer to |
1157 | * it. The structure may be changed asynchronously only if each | |
1158 | * field is written atomically. | |
1159 | * 3. Update dev->stats asynchronously and atomically, and define | |
1160 | * neither operation. | |
d314774c | 1161 | * |
3df5b3c6 | 1162 | * bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id) |
2c9d85d4 NF |
1163 | * Return true if this device supports offload stats of this attr_id. |
1164 | * | |
1165 | * int (*ndo_get_offload_stats)(int attr_id, const struct net_device *dev, | |
1166 | * void *attr_data) | |
1167 | * Get statistics for offload operations by attr_id. Write it into the | |
1168 | * attr_data pointer. | |
1169 | * | |
5d632cb7 | 1170 | * int (*ndo_vlan_rx_add_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 1171 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 1172 | * VLAN id is registered. |
d314774c | 1173 | * |
5d632cb7 | 1174 | * int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 1175 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 1176 | * VLAN id is unregistered. |
d314774c SH |
1177 | * |
1178 | * void (*ndo_poll_controller)(struct net_device *dev); | |
95c26df8 WM |
1179 | * |
1180 | * SR-IOV management functions. | |
1181 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); | |
79aab093 MS |
1182 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, |
1183 | * u8 qos, __be16 proto); | |
ed616689 SC |
1184 | * int (*ndo_set_vf_rate)(struct net_device *dev, int vf, int min_tx_rate, |
1185 | * int max_tx_rate); | |
5f8444a3 | 1186 | * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting); |
dd461d6a | 1187 | * int (*ndo_set_vf_trust)(struct net_device *dev, int vf, bool setting); |
95c26df8 WM |
1188 | * int (*ndo_get_vf_config)(struct net_device *dev, |
1189 | * int vf, struct ifla_vf_info *ivf); | |
1d8faf48 | 1190 | * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state); |
57b61080 SF |
1191 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
1192 | * struct nlattr *port[]); | |
01a3d796 VZ |
1193 | * |
1194 | * Enable or disable the VF ability to query its RSS Redirection Table and | |
1195 | * Hash Key. This is needed since on some devices VF share this information | |
5e82b4b2 | 1196 | * with PF and querying it may introduce a theoretical security risk. |
01a3d796 | 1197 | * int (*ndo_set_vf_rss_query_en)(struct net_device *dev, int vf, bool setting); |
57b61080 | 1198 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); |
2572ac53 | 1199 | * int (*ndo_setup_tc)(struct net_device *dev, enum tc_setup_type type, |
de4784ca | 1200 | * void *type_data); |
6a4bc2b4 FF |
1201 | * Called to setup any 'tc' scheduler, classifier or action on @dev. |
1202 | * This is always called from the stack with the rtnl lock held and netif | |
1203 | * tx queues stopped. This allows the netdevice to perform queue | |
1204 | * management safely. | |
c445477d | 1205 | * |
e9bce845 YZ |
1206 | * Fiber Channel over Ethernet (FCoE) offload functions. |
1207 | * int (*ndo_fcoe_enable)(struct net_device *dev); | |
1208 | * Called when the FCoE protocol stack wants to start using LLD for FCoE | |
1209 | * so the underlying device can perform whatever needed configuration or | |
1210 | * initialization to support acceleration of FCoE traffic. | |
1211 | * | |
1212 | * int (*ndo_fcoe_disable)(struct net_device *dev); | |
1213 | * Called when the FCoE protocol stack wants to stop using LLD for FCoE | |
1214 | * so the underlying device can perform whatever needed clean-ups to | |
1215 | * stop supporting acceleration of FCoE traffic. | |
1216 | * | |
1217 | * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid, | |
1218 | * struct scatterlist *sgl, unsigned int sgc); | |
1219 | * Called when the FCoE Initiator wants to initialize an I/O that | |
1220 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
1221 | * perform necessary setup and returns 1 to indicate the device is set up | |
1222 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
1223 | * | |
1224 | * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); | |
1225 | * Called when the FCoE Initiator/Target is done with the DDPed I/O as | |
1226 | * indicated by the FC exchange id 'xid', so the underlying device can | |
1227 | * clean up and reuse resources for later DDP requests. | |
1228 | * | |
1229 | * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid, | |
1230 | * struct scatterlist *sgl, unsigned int sgc); | |
1231 | * Called when the FCoE Target wants to initialize an I/O that | |
1232 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
1233 | * perform necessary setup and returns 1 to indicate the device is set up | |
1234 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
1235 | * | |
68bad94e NP |
1236 | * int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1237 | * struct netdev_fcoe_hbainfo *hbainfo); | |
1238 | * Called when the FCoE Protocol stack wants information on the underlying | |
1239 | * device. This information is utilized by the FCoE protocol stack to | |
1240 | * register attributes with Fiber Channel management service as per the | |
1241 | * FC-GS Fabric Device Management Information(FDMI) specification. | |
1242 | * | |
e9bce845 YZ |
1243 | * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); |
1244 | * Called when the underlying device wants to override default World Wide | |
1245 | * Name (WWN) generation mechanism in FCoE protocol stack to pass its own | |
1246 | * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE | |
1247 | * protocol stack to use. | |
1248 | * | |
c445477d BH |
1249 | * RFS acceleration. |
1250 | * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, | |
1251 | * u16 rxq_index, u32 flow_id); | |
1252 | * Set hardware filter for RFS. rxq_index is the target queue index; | |
1253 | * flow_id is a flow ID to be passed to rps_may_expire_flow() later. | |
1254 | * Return the filter ID on success, or a negative error code. | |
fbaec0ea | 1255 | * |
8b98a70c | 1256 | * Slave management functions (for bridge, bonding, etc). |
fbaec0ea JP |
1257 | * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); |
1258 | * Called to make another netdev an underling. | |
1259 | * | |
1260 | * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); | |
1261 | * Called to release previously enslaved netdev. | |
5455c699 | 1262 | * |
cff9f12b MG |
1263 | * struct net_device *(*ndo_get_xmit_slave)(struct net_device *dev, |
1264 | * struct sk_buff *skb, | |
1265 | * bool all_slaves); | |
1266 | * Get the xmit slave of master device. If all_slaves is true, function | |
1267 | * assume all the slaves can transmit. | |
1268 | * | |
5455c699 | 1269 | * Feature/offload setting functions. |
1a2a1444 DM |
1270 | * netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1271 | * netdev_features_t features); | |
1272 | * Adjusts the requested feature flags according to device-specific | |
1273 | * constraints, and returns the resulting flags. Must not modify | |
1274 | * the device state. | |
1275 | * | |
c8f44aff | 1276 | * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); |
5455c699 MM |
1277 | * Called to update device configuration to new features. Passed |
1278 | * feature set might be less than what was returned by ndo_fix_features()). | |
1279 | * Must return >0 or -errno if it changed dev->features itself. | |
1280 | * | |
edc7d573 | 1281 | * int (*ndo_fdb_add)(struct ndmsg *ndm, struct nlattr *tb[], |
1282 | * struct net_device *dev, | |
87b0984e PM |
1283 | * const unsigned char *addr, u16 vid, u16 flags, |
1284 | * struct netlink_ext_ack *extack); | |
77162022 | 1285 | * Adds an FDB entry to dev for addr. |
1690be63 VY |
1286 | * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[], |
1287 | * struct net_device *dev, | |
f6f6424b | 1288 | * const unsigned char *addr, u16 vid) |
77162022 | 1289 | * Deletes the FDB entry from dev coresponding to addr. |
1306d536 NA |
1290 | * int (*ndo_fdb_del_bulk)(struct ndmsg *ndm, struct nlattr *tb[], |
1291 | * struct net_device *dev, | |
1292 | * u16 vid, | |
1293 | * struct netlink_ext_ack *extack); | |
77162022 | 1294 | * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb, |
5d5eacb3 | 1295 | * struct net_device *dev, struct net_device *filter_dev, |
d297653d | 1296 | * int *idx) |
77162022 JF |
1297 | * Used to add FDB entries to dump requests. Implementers should add |
1298 | * entries to skb and update idx with the number of entries. | |
e5a55a89 | 1299 | * |
8c44fa12 IS |
1300 | * int (*ndo_mdb_add)(struct net_device *dev, struct nlattr *tb[], |
1301 | * u16 nlmsg_flags, struct netlink_ext_ack *extack); | |
1302 | * Adds an MDB entry to dev. | |
1303 | * int (*ndo_mdb_del)(struct net_device *dev, struct nlattr *tb[], | |
1304 | * struct netlink_ext_ack *extack); | |
1305 | * Deletes the MDB entry from dev. | |
1306 | * int (*ndo_mdb_dump)(struct net_device *dev, struct sk_buff *skb, | |
1307 | * struct netlink_callback *cb); | |
1308 | * Dumps MDB entries from dev. The first argument (marker) in the netlink | |
1309 | * callback is used by core rtnetlink code. | |
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. | |
66f72230 MG |
1399 | * |
1400 | * int (*ndo_hwtstamp_get)(struct net_device *dev, | |
1401 | * struct kernel_hwtstamp_config *kernel_config); | |
1402 | * Get the currently configured hardware timestamping parameters for the | |
1403 | * NIC device. | |
1404 | * | |
1405 | * int (*ndo_hwtstamp_set)(struct net_device *dev, | |
1406 | * struct kernel_hwtstamp_config *kernel_config, | |
1407 | * struct netlink_ext_ack *extack); | |
1408 | * Change the hardware timestamping parameters for NIC device. | |
d314774c SH |
1409 | */ |
1410 | struct net_device_ops { | |
1411 | int (*ndo_init)(struct net_device *dev); | |
1412 | void (*ndo_uninit)(struct net_device *dev); | |
1413 | int (*ndo_open)(struct net_device *dev); | |
1414 | int (*ndo_stop)(struct net_device *dev); | |
cdba756f ED |
1415 | netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
1416 | struct net_device *dev); | |
1417 | netdev_features_t (*ndo_features_check)(struct sk_buff *skb, | |
1418 | struct net_device *dev, | |
1419 | netdev_features_t features); | |
00829823 | 1420 | u16 (*ndo_select_queue)(struct net_device *dev, |
f663dd9a | 1421 | struct sk_buff *skb, |
a350ecce | 1422 | struct net_device *sb_dev); |
d314774c SH |
1423 | void (*ndo_change_rx_flags)(struct net_device *dev, |
1424 | int flags); | |
d314774c | 1425 | void (*ndo_set_rx_mode)(struct net_device *dev); |
d314774c SH |
1426 | int (*ndo_set_mac_address)(struct net_device *dev, |
1427 | void *addr); | |
d314774c | 1428 | int (*ndo_validate_addr)(struct net_device *dev); |
d314774c SH |
1429 | int (*ndo_do_ioctl)(struct net_device *dev, |
1430 | struct ifreq *ifr, int cmd); | |
a7605370 AB |
1431 | int (*ndo_eth_ioctl)(struct net_device *dev, |
1432 | struct ifreq *ifr, int cmd); | |
3d9d00bd AB |
1433 | int (*ndo_siocbond)(struct net_device *dev, |
1434 | struct ifreq *ifr, int cmd); | |
ad7eab2a AB |
1435 | int (*ndo_siocwandev)(struct net_device *dev, |
1436 | struct if_settings *ifs); | |
b9067f5d AB |
1437 | int (*ndo_siocdevprivate)(struct net_device *dev, |
1438 | struct ifreq *ifr, | |
1439 | void __user *data, int cmd); | |
d314774c SH |
1440 | int (*ndo_set_config)(struct net_device *dev, |
1441 | struct ifmap *map); | |
00829823 SH |
1442 | int (*ndo_change_mtu)(struct net_device *dev, |
1443 | int new_mtu); | |
1444 | int (*ndo_neigh_setup)(struct net_device *dev, | |
1445 | struct neigh_parms *); | |
0290bd29 MT |
1446 | void (*ndo_tx_timeout) (struct net_device *dev, |
1447 | unsigned int txqueue); | |
d314774c | 1448 | |
bc1f4470 | 1449 | void (*ndo_get_stats64)(struct net_device *dev, |
1450 | struct rtnl_link_stats64 *storage); | |
3df5b3c6 | 1451 | bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id); |
2c9d85d4 NF |
1452 | int (*ndo_get_offload_stats)(int attr_id, |
1453 | const struct net_device *dev, | |
1454 | void *attr_data); | |
d314774c SH |
1455 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
1456 | ||
8e586137 | 1457 | int (*ndo_vlan_rx_add_vid)(struct net_device *dev, |
80d5c368 | 1458 | __be16 proto, u16 vid); |
8e586137 | 1459 | int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, |
80d5c368 | 1460 | __be16 proto, u16 vid); |
d314774c | 1461 | #ifdef CONFIG_NET_POLL_CONTROLLER |
d314774c | 1462 | void (*ndo_poll_controller)(struct net_device *dev); |
4247e161 | 1463 | int (*ndo_netpoll_setup)(struct net_device *dev, |
a8779ec1 | 1464 | struct netpoll_info *info); |
0e34e931 | 1465 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
d314774c | 1466 | #endif |
95c26df8 WM |
1467 | int (*ndo_set_vf_mac)(struct net_device *dev, |
1468 | int queue, u8 *mac); | |
1469 | int (*ndo_set_vf_vlan)(struct net_device *dev, | |
79aab093 MS |
1470 | int queue, u16 vlan, |
1471 | u8 qos, __be16 proto); | |
ed616689 SC |
1472 | int (*ndo_set_vf_rate)(struct net_device *dev, |
1473 | int vf, int min_tx_rate, | |
1474 | int max_tx_rate); | |
5f8444a3 GR |
1475 | int (*ndo_set_vf_spoofchk)(struct net_device *dev, |
1476 | int vf, bool setting); | |
dd461d6a HS |
1477 | int (*ndo_set_vf_trust)(struct net_device *dev, |
1478 | int vf, bool setting); | |
95c26df8 WM |
1479 | int (*ndo_get_vf_config)(struct net_device *dev, |
1480 | int vf, | |
1481 | struct ifla_vf_info *ivf); | |
1d8faf48 RE |
1482 | int (*ndo_set_vf_link_state)(struct net_device *dev, |
1483 | int vf, int link_state); | |
3b766cd8 EBE |
1484 | int (*ndo_get_vf_stats)(struct net_device *dev, |
1485 | int vf, | |
1486 | struct ifla_vf_stats | |
1487 | *vf_stats); | |
57b61080 SF |
1488 | int (*ndo_set_vf_port)(struct net_device *dev, |
1489 | int vf, | |
1490 | struct nlattr *port[]); | |
1491 | int (*ndo_get_vf_port)(struct net_device *dev, | |
1492 | int vf, struct sk_buff *skb); | |
30aad417 DG |
1493 | int (*ndo_get_vf_guid)(struct net_device *dev, |
1494 | int vf, | |
1495 | struct ifla_vf_guid *node_guid, | |
1496 | struct ifla_vf_guid *port_guid); | |
cc8e27cc EC |
1497 | int (*ndo_set_vf_guid)(struct net_device *dev, |
1498 | int vf, u64 guid, | |
1499 | int guid_type); | |
01a3d796 VZ |
1500 | int (*ndo_set_vf_rss_query_en)( |
1501 | struct net_device *dev, | |
1502 | int vf, bool setting); | |
16e5cc64 | 1503 | int (*ndo_setup_tc)(struct net_device *dev, |
2572ac53 | 1504 | enum tc_setup_type type, |
de4784ca | 1505 | void *type_data); |
d11ead75 | 1506 | #if IS_ENABLED(CONFIG_FCOE) |
cb454399 YZ |
1507 | int (*ndo_fcoe_enable)(struct net_device *dev); |
1508 | int (*ndo_fcoe_disable)(struct net_device *dev); | |
4d288d57 YZ |
1509 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
1510 | u16 xid, | |
1511 | struct scatterlist *sgl, | |
1512 | unsigned int sgc); | |
1513 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
1514 | u16 xid); | |
6247e086 YZ |
1515 | int (*ndo_fcoe_ddp_target)(struct net_device *dev, |
1516 | u16 xid, | |
1517 | struct scatterlist *sgl, | |
1518 | unsigned int sgc); | |
68bad94e NP |
1519 | int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1520 | struct netdev_fcoe_hbainfo *hbainfo); | |
3c9c36bc BPG |
1521 | #endif |
1522 | ||
d11ead75 | 1523 | #if IS_ENABLED(CONFIG_LIBFCOE) |
df5c7945 YZ |
1524 | #define NETDEV_FCOE_WWNN 0 |
1525 | #define NETDEV_FCOE_WWPN 1 | |
1526 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, | |
1527 | u64 *wwn, int type); | |
4d288d57 | 1528 | #endif |
3c9c36bc | 1529 | |
c445477d BH |
1530 | #ifdef CONFIG_RFS_ACCEL |
1531 | int (*ndo_rx_flow_steer)(struct net_device *dev, | |
1532 | const struct sk_buff *skb, | |
1533 | u16 rxq_index, | |
1534 | u32 flow_id); | |
1535 | #endif | |
fbaec0ea | 1536 | int (*ndo_add_slave)(struct net_device *dev, |
33eaf2a6 DA |
1537 | struct net_device *slave_dev, |
1538 | struct netlink_ext_ack *extack); | |
fbaec0ea JP |
1539 | int (*ndo_del_slave)(struct net_device *dev, |
1540 | struct net_device *slave_dev); | |
cff9f12b MG |
1541 | struct net_device* (*ndo_get_xmit_slave)(struct net_device *dev, |
1542 | struct sk_buff *skb, | |
1543 | bool all_slaves); | |
719a402c TT |
1544 | struct net_device* (*ndo_sk_get_lower_dev)(struct net_device *dev, |
1545 | struct sock *sk); | |
c8f44aff MM |
1546 | netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1547 | netdev_features_t features); | |
5455c699 | 1548 | int (*ndo_set_features)(struct net_device *dev, |
c8f44aff | 1549 | netdev_features_t features); |
503eebc2 JP |
1550 | int (*ndo_neigh_construct)(struct net_device *dev, |
1551 | struct neighbour *n); | |
1552 | void (*ndo_neigh_destroy)(struct net_device *dev, | |
1553 | struct neighbour *n); | |
77162022 JF |
1554 | |
1555 | int (*ndo_fdb_add)(struct ndmsg *ndm, | |
edc7d573 | 1556 | struct nlattr *tb[], |
77162022 | 1557 | struct net_device *dev, |
6b6e2725 | 1558 | const unsigned char *addr, |
f6f6424b | 1559 | u16 vid, |
87b0984e PM |
1560 | u16 flags, |
1561 | struct netlink_ext_ack *extack); | |
77162022 | 1562 | int (*ndo_fdb_del)(struct ndmsg *ndm, |
1690be63 | 1563 | struct nlattr *tb[], |
77162022 | 1564 | struct net_device *dev, |
f6f6424b | 1565 | const unsigned char *addr, |
ca4567f1 | 1566 | u16 vid, struct netlink_ext_ack *extack); |
1306d536 NA |
1567 | int (*ndo_fdb_del_bulk)(struct ndmsg *ndm, |
1568 | struct nlattr *tb[], | |
1569 | struct net_device *dev, | |
1570 | u16 vid, | |
1571 | struct netlink_ext_ack *extack); | |
77162022 JF |
1572 | int (*ndo_fdb_dump)(struct sk_buff *skb, |
1573 | struct netlink_callback *cb, | |
1574 | struct net_device *dev, | |
5d5eacb3 | 1575 | struct net_device *filter_dev, |
d297653d | 1576 | int *idx); |
5b2f94b2 RP |
1577 | int (*ndo_fdb_get)(struct sk_buff *skb, |
1578 | struct nlattr *tb[], | |
1579 | struct net_device *dev, | |
1580 | const unsigned char *addr, | |
1581 | u16 vid, u32 portid, u32 seq, | |
1582 | struct netlink_ext_ack *extack); | |
8c44fa12 IS |
1583 | int (*ndo_mdb_add)(struct net_device *dev, |
1584 | struct nlattr *tb[], | |
1585 | u16 nlmsg_flags, | |
1586 | struct netlink_ext_ack *extack); | |
1587 | int (*ndo_mdb_del)(struct net_device *dev, | |
1588 | struct nlattr *tb[], | |
1589 | struct netlink_ext_ack *extack); | |
1590 | int (*ndo_mdb_dump)(struct net_device *dev, | |
1591 | struct sk_buff *skb, | |
1592 | struct netlink_callback *cb); | |
e5a55a89 | 1593 | int (*ndo_bridge_setlink)(struct net_device *dev, |
add511b3 | 1594 | struct nlmsghdr *nlh, |
2fd527b7 PM |
1595 | u16 flags, |
1596 | struct netlink_ext_ack *extack); | |
e5a55a89 JF |
1597 | int (*ndo_bridge_getlink)(struct sk_buff *skb, |
1598 | u32 pid, u32 seq, | |
6cbdceeb | 1599 | struct net_device *dev, |
46c264da ND |
1600 | u32 filter_mask, |
1601 | int nlflags); | |
407af329 | 1602 | int (*ndo_bridge_dellink)(struct net_device *dev, |
add511b3 RP |
1603 | struct nlmsghdr *nlh, |
1604 | u16 flags); | |
4bf84c35 JP |
1605 | int (*ndo_change_carrier)(struct net_device *dev, |
1606 | bool new_carrier); | |
66b52b0d | 1607 | int (*ndo_get_phys_port_id)(struct net_device *dev, |
02637fce | 1608 | struct netdev_phys_item_id *ppid); |
d6abc596 FF |
1609 | int (*ndo_get_port_parent_id)(struct net_device *dev, |
1610 | struct netdev_phys_item_id *ppid); | |
db24a904 DA |
1611 | int (*ndo_get_phys_port_name)(struct net_device *dev, |
1612 | char *name, size_t len); | |
a6cc0cfa JF |
1613 | void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1614 | struct net_device *dev); | |
1615 | void (*ndo_dfwd_del_station)(struct net_device *pdev, | |
1616 | void *priv); | |
1617 | ||
822b3b2e JF |
1618 | int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1619 | int queue_index, | |
1620 | u32 maxrate); | |
a54acb3a | 1621 | int (*ndo_get_iflink)(const struct net_device *dev); |
fc4099f1 PS |
1622 | int (*ndo_fill_metadata_dst)(struct net_device *dev, |
1623 | struct sk_buff *skb); | |
871b642a PA |
1624 | void (*ndo_set_rx_headroom)(struct net_device *dev, |
1625 | int needed_headroom); | |
f4e63525 JK |
1626 | int (*ndo_bpf)(struct net_device *dev, |
1627 | struct netdev_bpf *bpf); | |
735fc405 | 1628 | int (*ndo_xdp_xmit)(struct net_device *dev, int n, |
42b33468 JDB |
1629 | struct xdp_frame **xdp, |
1630 | u32 flags); | |
879af96f JM |
1631 | struct net_device * (*ndo_xdp_get_xmit_slave)(struct net_device *dev, |
1632 | struct xdp_buff *xdp); | |
9116e5e2 MK |
1633 | int (*ndo_xsk_wakeup)(struct net_device *dev, |
1634 | u32 queue_id, u32 flags); | |
607259a6 CH |
1635 | int (*ndo_tunnel_ctl)(struct net_device *dev, |
1636 | struct ip_tunnel_parm *p, int cmd); | |
9aa1206e | 1637 | struct net_device * (*ndo_get_peer_dev)(struct net_device *dev); |
ddb94eaf PNA |
1638 | int (*ndo_fill_forward_path)(struct net_device_path_ctx *ctx, |
1639 | struct net_device_path *path); | |
97dc7cd9 GE |
1640 | ktime_t (*ndo_get_tstamp)(struct net_device *dev, |
1641 | const struct skb_shared_hwtstamps *hwtstamps, | |
1642 | bool cycles); | |
66f72230 MG |
1643 | int (*ndo_hwtstamp_get)(struct net_device *dev, |
1644 | struct kernel_hwtstamp_config *kernel_config); | |
1645 | int (*ndo_hwtstamp_set)(struct net_device *dev, | |
1646 | struct kernel_hwtstamp_config *kernel_config, | |
1647 | struct netlink_ext_ack *extack); | |
d314774c SH |
1648 | }; |
1649 | ||
7aa98047 | 1650 | /** |
270f3385 | 1651 | * enum netdev_priv_flags - &struct net_device priv_flags |
7aa98047 LR |
1652 | * |
1653 | * These are the &struct net_device, they are only set internally | |
1654 | * by drivers and used in the kernel. These flags are invisible to | |
5e82b4b2 | 1655 | * userspace; this means that the order of these flags can change |
7aa98047 LR |
1656 | * during any kernel release. |
1657 | * | |
1658 | * You should have a pretty good reason to be extending these flags. | |
1659 | * | |
1660 | * @IFF_802_1Q_VLAN: 802.1Q VLAN device | |
1661 | * @IFF_EBRIDGE: Ethernet bridging device | |
7aa98047 | 1662 | * @IFF_BONDING: bonding master or slave |
7aa98047 | 1663 | * @IFF_ISATAP: ISATAP interface (RFC4214) |
7aa98047 LR |
1664 | * @IFF_WAN_HDLC: WAN HDLC device |
1665 | * @IFF_XMIT_DST_RELEASE: dev_hard_start_xmit() is allowed to | |
1666 | * release skb->dst | |
1667 | * @IFF_DONT_BRIDGE: disallow bridging this ether dev | |
1668 | * @IFF_DISABLE_NETPOLL: disable netpoll at run-time | |
1669 | * @IFF_MACVLAN_PORT: device used as macvlan port | |
1670 | * @IFF_BRIDGE_PORT: device used as bridge port | |
1671 | * @IFF_OVS_DATAPATH: device used as Open vSwitch datapath port | |
1672 | * @IFF_TX_SKB_SHARING: The interface supports sharing skbs on transmit | |
1673 | * @IFF_UNICAST_FLT: Supports unicast filtering | |
1674 | * @IFF_TEAM_PORT: device used as team port | |
1675 | * @IFF_SUPP_NOFCS: device supports sending custom FCS | |
1676 | * @IFF_LIVE_ADDR_CHANGE: device supports hardware address | |
1677 | * change when it's running | |
1678 | * @IFF_MACVLAN: Macvlan device | |
6d0e24cd LB |
1679 | * @IFF_XMIT_DST_RELEASE_PERM: IFF_XMIT_DST_RELEASE not taking into account |
1680 | * underlying stacked devices | |
007979ea | 1681 | * @IFF_L3MDEV_MASTER: device is an L3 master device |
fa8187c9 | 1682 | * @IFF_NO_QUEUE: device can run without qdisc attached |
35d4e172 | 1683 | * @IFF_OPENVSWITCH: device is a Open vSwitch master |
fee6d4c7 | 1684 | * @IFF_L3MDEV_SLAVE: device is enslaved to an L3 master device |
c981e421 | 1685 | * @IFF_TEAM: device is a team device |
d4ab4286 | 1686 | * @IFF_RXFH_CONFIGURED: device has had Rx Flow indirection table configured |
871b642a PA |
1687 | * @IFF_PHONY_HEADROOM: the headroom value is controlled by an external |
1688 | * entity (i.e. the master device for bridged veth) | |
3c175784 | 1689 | * @IFF_MACSEC: device is a MACsec device |
f5426250 | 1690 | * @IFF_NO_RX_HANDLER: device doesn't support the rx_handler hook |
30c8bd5a SS |
1691 | * @IFF_FAILOVER: device is a failover master device |
1692 | * @IFF_FAILOVER_SLAVE: device is lower dev of a failover master device | |
d5256083 | 1693 | * @IFF_L3MDEV_RX_HANDLER: only invoke the rx handler of L3 master device |
8a321cf7 | 1694 | * @IFF_NO_ADDRCONF: prevent ipv6 addrconf |
c2ff53d8 XZ |
1695 | * @IFF_TX_SKB_NO_LINEAR: device/driver is capable of xmitting frames with |
1696 | * skb_headlen(skb) == 0 (data starts from frag0) | |
2106efda | 1697 | * @IFF_CHANGE_PROTO_DOWN: device supports setting carrier via IFLA_PROTO_DOWN |
fd770e85 VO |
1698 | * @IFF_SEE_ALL_HWTSTAMP_REQUESTS: device wants to see calls to |
1699 | * ndo_hwtstamp_set() for all timestamp requests regardless of source, | |
1700 | * even if those aren't HWTSTAMP_SOURCE_NETDEV. | |
7aa98047 LR |
1701 | */ |
1702 | enum netdev_priv_flags { | |
1703 | IFF_802_1Q_VLAN = 1<<0, | |
1704 | IFF_EBRIDGE = 1<<1, | |
0dc1549b JP |
1705 | IFF_BONDING = 1<<2, |
1706 | IFF_ISATAP = 1<<3, | |
1707 | IFF_WAN_HDLC = 1<<4, | |
1708 | IFF_XMIT_DST_RELEASE = 1<<5, | |
1709 | IFF_DONT_BRIDGE = 1<<6, | |
1710 | IFF_DISABLE_NETPOLL = 1<<7, | |
1711 | IFF_MACVLAN_PORT = 1<<8, | |
1712 | IFF_BRIDGE_PORT = 1<<9, | |
1713 | IFF_OVS_DATAPATH = 1<<10, | |
1714 | IFF_TX_SKB_SHARING = 1<<11, | |
1715 | IFF_UNICAST_FLT = 1<<12, | |
1716 | IFF_TEAM_PORT = 1<<13, | |
1717 | IFF_SUPP_NOFCS = 1<<14, | |
1718 | IFF_LIVE_ADDR_CHANGE = 1<<15, | |
1719 | IFF_MACVLAN = 1<<16, | |
1720 | IFF_XMIT_DST_RELEASE_PERM = 1<<17, | |
1ec54cb4 PA |
1721 | IFF_L3MDEV_MASTER = 1<<18, |
1722 | IFF_NO_QUEUE = 1<<19, | |
1723 | IFF_OPENVSWITCH = 1<<20, | |
1724 | IFF_L3MDEV_SLAVE = 1<<21, | |
1725 | IFF_TEAM = 1<<22, | |
1726 | IFF_RXFH_CONFIGURED = 1<<23, | |
1727 | IFF_PHONY_HEADROOM = 1<<24, | |
1728 | IFF_MACSEC = 1<<25, | |
f5426250 | 1729 | IFF_NO_RX_HANDLER = 1<<26, |
30c8bd5a SS |
1730 | IFF_FAILOVER = 1<<27, |
1731 | IFF_FAILOVER_SLAVE = 1<<28, | |
d5256083 | 1732 | IFF_L3MDEV_RX_HANDLER = 1<<29, |
8a321cf7 | 1733 | IFF_NO_ADDRCONF = BIT_ULL(30), |
3b89b511 | 1734 | IFF_TX_SKB_NO_LINEAR = BIT_ULL(31), |
2106efda | 1735 | IFF_CHANGE_PROTO_DOWN = BIT_ULL(32), |
fd770e85 | 1736 | IFF_SEE_ALL_HWTSTAMP_REQUESTS = BIT_ULL(33), |
7aa98047 LR |
1737 | }; |
1738 | ||
1739 | #define IFF_802_1Q_VLAN IFF_802_1Q_VLAN | |
1740 | #define IFF_EBRIDGE IFF_EBRIDGE | |
7aa98047 | 1741 | #define IFF_BONDING IFF_BONDING |
7aa98047 | 1742 | #define IFF_ISATAP IFF_ISATAP |
7aa98047 LR |
1743 | #define IFF_WAN_HDLC IFF_WAN_HDLC |
1744 | #define IFF_XMIT_DST_RELEASE IFF_XMIT_DST_RELEASE | |
1745 | #define IFF_DONT_BRIDGE IFF_DONT_BRIDGE | |
1746 | #define IFF_DISABLE_NETPOLL IFF_DISABLE_NETPOLL | |
1747 | #define IFF_MACVLAN_PORT IFF_MACVLAN_PORT | |
1748 | #define IFF_BRIDGE_PORT IFF_BRIDGE_PORT | |
1749 | #define IFF_OVS_DATAPATH IFF_OVS_DATAPATH | |
1750 | #define IFF_TX_SKB_SHARING IFF_TX_SKB_SHARING | |
1751 | #define IFF_UNICAST_FLT IFF_UNICAST_FLT | |
1752 | #define IFF_TEAM_PORT IFF_TEAM_PORT | |
1753 | #define IFF_SUPP_NOFCS IFF_SUPP_NOFCS | |
1754 | #define IFF_LIVE_ADDR_CHANGE IFF_LIVE_ADDR_CHANGE | |
1755 | #define IFF_MACVLAN IFF_MACVLAN | |
02875878 | 1756 | #define IFF_XMIT_DST_RELEASE_PERM IFF_XMIT_DST_RELEASE_PERM |
007979ea | 1757 | #define IFF_L3MDEV_MASTER IFF_L3MDEV_MASTER |
fa8187c9 | 1758 | #define IFF_NO_QUEUE IFF_NO_QUEUE |
35d4e172 | 1759 | #define IFF_OPENVSWITCH IFF_OPENVSWITCH |
8f25348b | 1760 | #define IFF_L3MDEV_SLAVE IFF_L3MDEV_SLAVE |
c981e421 | 1761 | #define IFF_TEAM IFF_TEAM |
d4ab4286 | 1762 | #define IFF_RXFH_CONFIGURED IFF_RXFH_CONFIGURED |
2463e073 | 1763 | #define IFF_PHONY_HEADROOM IFF_PHONY_HEADROOM |
3c175784 | 1764 | #define IFF_MACSEC IFF_MACSEC |
f5426250 | 1765 | #define IFF_NO_RX_HANDLER IFF_NO_RX_HANDLER |
30c8bd5a SS |
1766 | #define IFF_FAILOVER IFF_FAILOVER |
1767 | #define IFF_FAILOVER_SLAVE IFF_FAILOVER_SLAVE | |
d5256083 | 1768 | #define IFF_L3MDEV_RX_HANDLER IFF_L3MDEV_RX_HANDLER |
c2ff53d8 | 1769 | #define IFF_TX_SKB_NO_LINEAR IFF_TX_SKB_NO_LINEAR |
7aa98047 | 1770 | |
4e096a18 OR |
1771 | /* Specifies the type of the struct net_device::ml_priv pointer */ |
1772 | enum netdev_ml_priv_type { | |
1773 | ML_PRIV_NONE, | |
1774 | ML_PRIV_CAN, | |
1775 | }; | |
1776 | ||
536721b1 KK |
1777 | /** |
1778 | * struct net_device - The DEVICE structure. | |
d651983d MCC |
1779 | * |
1780 | * Actually, this whole structure is a big mistake. It mixes I/O | |
1781 | * data with strictly "high-level" data, and it has to know about | |
1782 | * almost every data structure used in the INET module. | |
536721b1 KK |
1783 | * |
1784 | * @name: This is the first field of the "visible" part of this structure | |
1785 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
d651983d | 1786 | * of the interface. |
536721b1 | 1787 | * |
ff927412 | 1788 | * @name_node: Name hashlist node |
536721b1 KK |
1789 | * @ifalias: SNMP alias |
1790 | * @mem_end: Shared memory end | |
1791 | * @mem_start: Shared memory start | |
1792 | * @base_addr: Device I/O address | |
1793 | * @irq: Device IRQ number | |
1794 | * | |
1795 | * @state: Generic network queuing layer state, see netdev_state_t | |
1796 | * @dev_list: The global list of network devices | |
5e82b4b2 BH |
1797 | * @napi_list: List entry used for polling NAPI devices |
1798 | * @unreg_list: List entry when we are unregistering the | |
1799 | * device; see the function unregister_netdev | |
1800 | * @close_list: List entry used when we are closing the device | |
62d885fe BP |
1801 | * @ptype_all: Device-specific packet handlers for all protocols |
1802 | * @ptype_specific: Device-specific, protocol-specific packet handlers | |
536721b1 KK |
1803 | * |
1804 | * @adj_list: Directly linked devices, like slaves for bonding | |
536721b1 KK |
1805 | * @features: Currently active device features |
1806 | * @hw_features: User-changeable features | |
1807 | * | |
1808 | * @wanted_features: User-requested features | |
1809 | * @vlan_features: Mask of features inheritable by VLAN devices | |
1810 | * | |
1811 | * @hw_enc_features: Mask of features inherited by encapsulating devices | |
1812 | * This field indicates what encapsulation | |
1813 | * offloads the hardware is capable of doing, | |
1814 | * and drivers will need to set them appropriately. | |
1815 | * | |
1816 | * @mpls_features: Mask of features inheritable by MPLS | |
a1fa83bd | 1817 | * @gso_partial_features: value(s) from NETIF_F_GSO\* |
536721b1 KK |
1818 | * |
1819 | * @ifindex: interface index | |
5e82b4b2 | 1820 | * @group: The group the device belongs to |
536721b1 KK |
1821 | * |
1822 | * @stats: Statistics struct, which was left as a legacy, use | |
1823 | * rtnl_link_stats64 instead | |
1824 | * | |
625788b5 | 1825 | * @core_stats: core networking counters, |
536721b1 | 1826 | * do not use this in drivers |
9e55e5d3 FF |
1827 | * @carrier_up_count: Number of times the carrier has been up |
1828 | * @carrier_down_count: Number of times the carrier has been down | |
536721b1 | 1829 | * |
536721b1 KK |
1830 | * @wireless_handlers: List of functions to handle Wireless Extensions, |
1831 | * instead of ioctl, | |
1832 | * see <net/iw_handler.h> for details. | |
1833 | * @wireless_data: Instance data managed by the core of wireless extensions | |
1834 | * | |
1835 | * @netdev_ops: Includes several pointers to callbacks, | |
1836 | * if one wants to override the ndo_*() functions | |
3d76a4d3 | 1837 | * @xdp_metadata_ops: Includes pointers to XDP metadata callbacks. |
536721b1 | 1838 | * @ethtool_ops: Management operations |
a1fa83bd | 1839 | * @l3mdev_ops: Layer 3 master device operations |
f997c55c AA |
1840 | * @ndisc_ops: Includes callbacks for different IPv6 neighbour |
1841 | * discovery handling. Necessary for e.g. 6LoWPAN. | |
a1fa83bd RD |
1842 | * @xfrmdev_ops: Transformation offload operations |
1843 | * @tlsdev_ops: Transport Layer Security offload operations | |
d476059e | 1844 | * @header_ops: Includes callbacks for creating,parsing,caching,etc |
536721b1 KK |
1845 | * of Layer 2 headers. |
1846 | * | |
1847 | * @flags: Interface flags (a la BSD) | |
26759bee | 1848 | * @xdp_features: XDP capability supported by the device |
536721b1 KK |
1849 | * @priv_flags: Like 'flags' but invisible to userspace, |
1850 | * see if.h for the definitions | |
1851 | * @gflags: Global flags ( kept as legacy ) | |
1852 | * @padded: How much padding added by alloc_netdev() | |
1853 | * @operstate: RFC2863 operstate | |
1854 | * @link_mode: Mapping policy to operstate | |
1855 | * @if_port: Selectable AUI, TP, ... | |
1856 | * @dma: DMA channel | |
1857 | * @mtu: Interface MTU value | |
61e84623 JW |
1858 | * @min_mtu: Interface Minimum MTU value |
1859 | * @max_mtu: Interface Maximum MTU value | |
536721b1 | 1860 | * @type: Interface hardware type |
2793a23a | 1861 | * @hard_header_len: Maximum hardware header length. |
217e6fa2 | 1862 | * @min_header_len: Minimum hardware header length |
536721b1 KK |
1863 | * |
1864 | * @needed_headroom: Extra headroom the hardware may need, but not in all | |
1865 | * cases can this be guaranteed | |
1866 | * @needed_tailroom: Extra tailroom the hardware may need, but not in all | |
1867 | * cases can this be guaranteed. Some cases also use | |
1868 | * LL_MAX_HEADER instead to allocate the skb | |
1869 | * | |
1870 | * interface address info: | |
1871 | * | |
1872 | * @perm_addr: Permanent hw address | |
1873 | * @addr_assign_type: Hw address assignment type | |
1874 | * @addr_len: Hardware address length | |
5343da4c TY |
1875 | * @upper_level: Maximum depth level of upper devices. |
1876 | * @lower_level: Maximum depth level of lower devices. | |
8626a0c8 | 1877 | * @neigh_priv_len: Used in neigh_alloc() |
536721b1 KK |
1878 | * @dev_id: Used to differentiate devices that share |
1879 | * the same link layer address | |
1880 | * @dev_port: Used to differentiate devices that share | |
1881 | * the same function | |
1882 | * @addr_list_lock: XXX: need comments on this one | |
a1fa83bd | 1883 | * @name_assign_type: network interface name assignment type |
5e82b4b2 | 1884 | * @uc_promisc: Counter that indicates promiscuous mode |
536721b1 KK |
1885 | * has been enabled due to the need to listen to |
1886 | * additional unicast addresses in a device that | |
1887 | * does not implement ndo_set_rx_mode() | |
14ffbbb8 TG |
1888 | * @uc: unicast mac addresses |
1889 | * @mc: multicast mac addresses | |
1890 | * @dev_addrs: list of device hw addresses | |
1891 | * @queues_kset: Group of all Kobjects in the Tx and RX queues | |
5e82b4b2 BH |
1892 | * @promiscuity: Number of times the NIC is told to work in |
1893 | * promiscuous mode; if it becomes 0 the NIC will | |
1894 | * exit promiscuous mode | |
536721b1 KK |
1895 | * @allmulti: Counter, enables or disables allmulticast mode |
1896 | * | |
1897 | * @vlan_info: VLAN info | |
1898 | * @dsa_ptr: dsa specific data | |
1899 | * @tipc_ptr: TIPC specific data | |
1900 | * @atalk_ptr: AppleTalk link | |
1901 | * @ip_ptr: IPv4 specific data | |
536721b1 KK |
1902 | * @ip6_ptr: IPv6 specific data |
1903 | * @ax25_ptr: AX.25 specific data | |
1904 | * @ieee80211_ptr: IEEE 802.11 specific data, assign before registering | |
a1fa83bd RD |
1905 | * @ieee802154_ptr: IEEE 802.15.4 low-rate Wireless Personal Area Network |
1906 | * device struct | |
1907 | * @mpls_ptr: mpls_dev struct pointer | |
583be982 | 1908 | * @mctp_ptr: MCTP specific data |
536721b1 | 1909 | * |
536721b1 KK |
1910 | * @dev_addr: Hw address (before bcast, |
1911 | * because most packets are unicast) | |
1912 | * | |
1913 | * @_rx: Array of RX queues | |
1914 | * @num_rx_queues: Number of RX queues | |
1915 | * allocated at register_netdev() time | |
1916 | * @real_num_rx_queues: Number of RX queues currently active in device | |
a1fa83bd RD |
1917 | * @xdp_prog: XDP sockets filter program pointer |
1918 | * @gro_flush_timeout: timeout for GRO layer in NAPI | |
5c45a918 MCC |
1919 | * @napi_defer_hard_irqs: If not zero, provides a counter that would |
1920 | * allow to avoid NIC hard IRQ, on busy queues. | |
536721b1 KK |
1921 | * |
1922 | * @rx_handler: handler for received packets | |
1923 | * @rx_handler_data: XXX: need comments on this one | |
e420bed0 | 1924 | * @tcx_ingress: BPF & clsact qdisc specific data for ingress processing |
536721b1 | 1925 | * @ingress_queue: XXX: need comments on this one |
2f5e70c8 | 1926 | * @nf_hooks_ingress: netfilter hooks executed for ingress packets |
536721b1 KK |
1927 | * @broadcast: hw bcast address |
1928 | * | |
14ffbbb8 TG |
1929 | * @rx_cpu_rmap: CPU reverse-mapping for RX completion interrupts, |
1930 | * indexed by RX queue number. Assigned by driver. | |
1931 | * This must only be set if the ndo_rx_flow_steer | |
1932 | * operation is defined | |
1933 | * @index_hlist: Device index hash chain | |
1934 | * | |
536721b1 KK |
1935 | * @_tx: Array of TX queues |
1936 | * @num_tx_queues: Number of TX queues allocated at alloc_netdev_mq() time | |
1937 | * @real_num_tx_queues: Number of TX queues currently active in device | |
1938 | * @qdisc: Root qdisc from userspace point of view | |
1939 | * @tx_queue_len: Max frames per queue allowed | |
1940 | * @tx_global_lock: XXX: need comments on this one | |
a1fa83bd | 1941 | * @xdp_bulkq: XDP device bulk queue |
044ab86d | 1942 | * @xps_maps: all CPUs/RXQs maps for XPS device |
536721b1 KK |
1943 | * |
1944 | * @xps_maps: XXX: need comments on this one | |
e420bed0 | 1945 | * @tcx_egress: BPF & clsact qdisc specific data for egress processing |
42df6e1d | 1946 | * @nf_hooks_egress: netfilter hooks executed for egress packets |
a1fa83bd | 1947 | * @qdisc_hash: qdisc hash table |
536721b1 | 1948 | * @watchdog_timeo: Represents the timeout that is used by |
5e82b4b2 | 1949 | * the watchdog (see dev_watchdog()) |
536721b1 KK |
1950 | * @watchdog_timer: List of timers |
1951 | * | |
eb02d39a | 1952 | * @proto_down_reason: reason a netdev interface is held down |
536721b1 | 1953 | * @pcpu_refcnt: Number of references to this device |
add2d736 | 1954 | * @dev_refcnt: Number of references to this device |
4d92b95f | 1955 | * @refcnt_tracker: Tracker directory for tracked references to this device |
536721b1 | 1956 | * @todo_list: Delayed register/unregister |
536721b1 KK |
1957 | * @link_watch_list: XXX: need comments on this one |
1958 | * | |
1959 | * @reg_state: Register/unregister state machine | |
1960 | * @dismantle: Device is going to be freed | |
1961 | * @rtnl_link_state: This enum represents the phases of creating | |
1962 | * a new link | |
1963 | * | |
cf124db5 DM |
1964 | * @needs_free_netdev: Should unregister perform free_netdev? |
1965 | * @priv_destructor: Called from unregister | |
536721b1 KK |
1966 | * @npinfo: XXX: need comments on this one |
1967 | * @nd_net: Network namespace this network device is inside | |
1968 | * | |
1969 | * @ml_priv: Mid-layer private | |
4e096a18 | 1970 | * @ml_priv_type: Mid-layer private type |
536721b1 KK |
1971 | * @lstats: Loopback statistics |
1972 | * @tstats: Tunnel statistics | |
1973 | * @dstats: Dummy statistics | |
1974 | * @vstats: Virtual ethernet statistics | |
1975 | * | |
1976 | * @garp_port: GARP | |
1977 | * @mrp_port: MRP | |
1978 | * | |
4a0cb83b JK |
1979 | * @dm_private: Drop monitor private |
1980 | * | |
536721b1 KK |
1981 | * @dev: Class/net/name entry |
1982 | * @sysfs_groups: Space for optional device, statistics and wireless | |
1983 | * sysfs groups | |
1984 | * | |
1985 | * @sysfs_rx_queue_group: Space for optional per-rx queue attributes | |
1986 | * @rtnl_link_ops: Rtnl_link_ops | |
1987 | * | |
1988 | * @gso_max_size: Maximum size of generic segmentation offload | |
14d7b812 | 1989 | * @tso_max_size: Device (as in HW) limit on the max TSO request size |
536721b1 KK |
1990 | * @gso_max_segs: Maximum number of segments that can be passed to the |
1991 | * NIC for GSO | |
14d7b812 | 1992 | * @tso_max_segs: Device (as in HW) limit on the max TSO segment count |
9eefedd5 XL |
1993 | * @gso_ipv4_max_size: Maximum size of generic segmentation offload, |
1994 | * for IPv4. | |
536721b1 KK |
1995 | * |
1996 | * @dcbnl_ops: Data Center Bridging netlink ops | |
1997 | * @num_tc: Number of traffic classes in the net device | |
1998 | * @tc_to_txq: XXX: need comments on this one | |
920c1cd3 | 1999 | * @prio_tc_map: XXX: need comments on this one |
536721b1 KK |
2000 | * |
2001 | * @fcoe_ddp_xid: Max exchange id for FCoE LRO by ddp | |
2002 | * | |
2003 | * @priomap: XXX: need comments on this one | |
2004 | * @phydev: Physical device may attach itself | |
2005 | * for hardware timestamping | |
e679c9c1 | 2006 | * @sfp_bus: attached &struct sfp_bus structure. |
1a33e10e | 2007 | * |
1a33e10e | 2008 | * @qdisc_tx_busylock: lockdep class annotating Qdisc->busylock spinlock |
536721b1 | 2009 | * |
d746d707 AK |
2010 | * @proto_down: protocol port state information can be sent to the |
2011 | * switch driver and used to set the phys state of the | |
2012 | * switch port. | |
2013 | * | |
61941143 HK |
2014 | * @wol_enabled: Wake-on-LAN is enabled |
2015 | * | |
29863d41 WW |
2016 | * @threaded: napi threaded mode is enabled |
2017 | * | |
93642e14 JP |
2018 | * @net_notifier_list: List of per-net netdev notifier block |
2019 | * that follow this device when it is moved | |
2020 | * to another network namespace. | |
2021 | * | |
30e9bb84 AT |
2022 | * @macsec_ops: MACsec offloading ops |
2023 | * | |
cc4e3835 JK |
2024 | * @udp_tunnel_nic_info: static structure describing the UDP tunnel |
2025 | * offload capabilities of the device | |
2026 | * @udp_tunnel_nic: UDP tunnel offload state | |
ffa59b0b | 2027 | * @xdp_state: stores info on attached XDP BPF programs |
cc4e3835 | 2028 | * |
b62e3317 | 2029 | * @nested_level: Used as a parameter of spin_lock_nested() of |
a93bdcb9 MCC |
2030 | * dev->addr_list_lock. |
2031 | * @unlink_list: As netif_addr_lock() can be called recursively, | |
2032 | * keep a list of interfaces to be deleted. | |
eac1b93c CL |
2033 | * @gro_max_size: Maximum size of aggregated packet in generic |
2034 | * receive offload (GRO) | |
9eefedd5 XL |
2035 | * @gro_ipv4_max_size: Maximum size of aggregated packet in generic |
2036 | * receive offload (GRO), for IPv4. | |
a097627d MF |
2037 | * @xdp_zc_max_segs: Maximum number of segments supported by AF_XDP |
2038 | * zero copy driver | |
a93bdcb9 | 2039 | * |
d07b26f5 | 2040 | * @dev_addr_shadow: Copy of @dev_addr to catch direct writes. |
63f13937 | 2041 | * @linkwatch_dev_tracker: refcount tracker used by linkwatch. |
f12bf6f3 | 2042 | * @watchdog_dev_tracker: refcount tracker used by watchdog. |
b2309a71 ED |
2043 | * @dev_registered_tracker: tracker for reference held while |
2044 | * registered | |
9309f97a | 2045 | * @offload_xstats_l3: L3 HW stats for this netdevice. |
d07b26f5 | 2046 | * |
02a68a47 JP |
2047 | * @devlink_port: Pointer to related devlink port structure. |
2048 | * Assigned by a driver before netdev registration using | |
2049 | * SET_NETDEV_DEVLINK_PORT macro. This pointer is static | |
2050 | * during the time netdevice is registered. | |
2051 | * | |
1da177e4 LT |
2052 | * FIXME: cleanup struct net_device such that network protocol info |
2053 | * moves out. | |
2054 | */ | |
2055 | ||
d94d9fee | 2056 | struct net_device { |
1da177e4 | 2057 | char name[IFNAMSIZ]; |
ff927412 | 2058 | struct netdev_name_node *name_node; |
6c557001 | 2059 | struct dev_ifalias __rcu *ifalias; |
1da177e4 LT |
2060 | /* |
2061 | * I/O specific fields | |
2062 | * FIXME: Merge these and struct ifmap into one | |
2063 | */ | |
536721b1 KK |
2064 | unsigned long mem_end; |
2065 | unsigned long mem_start; | |
2066 | unsigned long base_addr; | |
1da177e4 LT |
2067 | |
2068 | /* | |
536721b1 KK |
2069 | * Some hardware also needs these fields (state,dev_list, |
2070 | * napi_list,unreg_list,close_list) but they are not | |
1da177e4 LT |
2071 | * part of the usual set specified in Space.c. |
2072 | */ | |
2073 | ||
1da177e4 LT |
2074 | unsigned long state; |
2075 | ||
7562f876 | 2076 | struct list_head dev_list; |
bea3348e | 2077 | struct list_head napi_list; |
44a0873d | 2078 | struct list_head unreg_list; |
5cde2829 | 2079 | struct list_head close_list; |
7866a621 SN |
2080 | struct list_head ptype_all; |
2081 | struct list_head ptype_specific; | |
2f268f12 | 2082 | |
2f268f12 VF |
2083 | struct { |
2084 | struct list_head upper; | |
2085 | struct list_head lower; | |
2086 | } adj_list; | |
2087 | ||
28af22c6 JDB |
2088 | /* Read-mostly cache-line for fast-path access */ |
2089 | unsigned int flags; | |
d3d854fd | 2090 | xdp_features_t xdp_features; |
2106efda | 2091 | unsigned long long priv_flags; |
28af22c6 | 2092 | const struct net_device_ops *netdev_ops; |
3d76a4d3 | 2093 | const struct xdp_metadata_ops *xdp_metadata_ops; |
28af22c6 JDB |
2094 | int ifindex; |
2095 | unsigned short gflags; | |
2096 | unsigned short hard_header_len; | |
2097 | ||
2098 | /* Note : dev->mtu is often read without holding a lock. | |
2099 | * Writers usually hold RTNL. | |
2100 | * It is recommended to use READ_ONCE() to annotate the reads, | |
2101 | * and to use WRITE_ONCE() to annotate the writes. | |
2102 | */ | |
2103 | unsigned int mtu; | |
2104 | unsigned short needed_headroom; | |
2105 | unsigned short needed_tailroom; | |
2106 | ||
c8f44aff | 2107 | netdev_features_t features; |
c8f44aff | 2108 | netdev_features_t hw_features; |
c8f44aff | 2109 | netdev_features_t wanted_features; |
c8f44aff | 2110 | netdev_features_t vlan_features; |
6a674e9c | 2111 | netdev_features_t hw_enc_features; |
0d89d203 | 2112 | netdev_features_t mpls_features; |
802ab55a | 2113 | netdev_features_t gso_partial_features; |
04ed3e74 | 2114 | |
28af22c6 JDB |
2115 | unsigned int min_mtu; |
2116 | unsigned int max_mtu; | |
2117 | unsigned short type; | |
2118 | unsigned char min_header_len; | |
2119 | unsigned char name_assign_type; | |
2120 | ||
7a66bbc9 | 2121 | int group; |
1da177e4 | 2122 | |
28af22c6 | 2123 | struct net_device_stats stats; /* not used by modern drivers */ |
015f0688 | 2124 | |
625788b5 | 2125 | struct net_device_core_stats __percpu *core_stats; |
1da177e4 | 2126 | |
b2d3bcfa DD |
2127 | /* Stats to monitor link on/off, flapping */ |
2128 | atomic_t carrier_up_count; | |
2129 | atomic_t carrier_down_count; | |
2130 | ||
b86e0280 | 2131 | #ifdef CONFIG_WIRELESS_EXT |
5e82b4b2 BH |
2132 | const struct iw_handler_def *wireless_handlers; |
2133 | struct iw_public_data *wireless_data; | |
b86e0280 | 2134 | #endif |
76fd8593 | 2135 | const struct ethtool_ops *ethtool_ops; |
1b69c6d0 DA |
2136 | #ifdef CONFIG_NET_L3_MASTER_DEV |
2137 | const struct l3mdev_ops *l3mdev_ops; | |
2138 | #endif | |
f997c55c AA |
2139 | #if IS_ENABLED(CONFIG_IPV6) |
2140 | const struct ndisc_ops *ndisc_ops; | |
2141 | #endif | |
1da177e4 | 2142 | |
9cb0d21d | 2143 | #ifdef CONFIG_XFRM_OFFLOAD |
d77e38e6 SK |
2144 | const struct xfrmdev_ops *xfrmdev_ops; |
2145 | #endif | |
2146 | ||
a5c37c63 IL |
2147 | #if IS_ENABLED(CONFIG_TLS_DEVICE) |
2148 | const struct tlsdev_ops *tlsdev_ops; | |
2149 | #endif | |
2150 | ||
3b04ddde SH |
2151 | const struct header_ops *header_ops; |
2152 | ||
536721b1 KK |
2153 | unsigned char operstate; |
2154 | unsigned char link_mode; | |
b00055aa | 2155 | |
536721b1 KK |
2156 | unsigned char if_port; |
2157 | unsigned char dma; | |
bdc220da | 2158 | |
1da177e4 | 2159 | /* Interface address info. */ |
536721b1 KK |
2160 | unsigned char perm_addr[MAX_ADDR_LEN]; |
2161 | unsigned char addr_assign_type; | |
2162 | unsigned char addr_len; | |
5343da4c TY |
2163 | unsigned char upper_level; |
2164 | unsigned char lower_level; | |
1fc70edb | 2165 | |
a0a9663d | 2166 | unsigned short neigh_priv_len; |
536721b1 KK |
2167 | unsigned short dev_id; |
2168 | unsigned short dev_port; | |
28af22c6 JDB |
2169 | unsigned short padded; |
2170 | ||
ccffad25 | 2171 | spinlock_t addr_list_lock; |
28af22c6 | 2172 | int irq; |
1fc70edb | 2173 | |
536721b1 KK |
2174 | struct netdev_hw_addr_list uc; |
2175 | struct netdev_hw_addr_list mc; | |
2176 | struct netdev_hw_addr_list dev_addrs; | |
2177 | ||
4c3d5e7b ED |
2178 | #ifdef CONFIG_SYSFS |
2179 | struct kset *queues_kset; | |
1fc70edb TY |
2180 | #endif |
2181 | #ifdef CONFIG_LOCKDEP | |
2182 | struct list_head unlink_list; | |
4c3d5e7b | 2183 | #endif |
9d45abe1 WC |
2184 | unsigned int promiscuity; |
2185 | unsigned int allmulti; | |
1fc70edb TY |
2186 | bool uc_promisc; |
2187 | #ifdef CONFIG_LOCKDEP | |
2188 | unsigned char nested_level; | |
2189 | #endif | |
1da177e4 | 2190 | |
1da177e4 | 2191 | |
5e82b4b2 | 2192 | /* Protocol-specific pointers */ |
65ac6a5f | 2193 | |
c304eddc JK |
2194 | struct in_device __rcu *ip_ptr; |
2195 | struct inet6_dev __rcu *ip6_ptr; | |
d11ead75 | 2196 | #if IS_ENABLED(CONFIG_VLAN_8021Q) |
536721b1 | 2197 | struct vlan_info __rcu *vlan_info; |
65ac6a5f | 2198 | #endif |
34a430d7 | 2199 | #if IS_ENABLED(CONFIG_NET_DSA) |
2f657a60 | 2200 | struct dsa_port *dsa_ptr; |
37cb0620 YX |
2201 | #endif |
2202 | #if IS_ENABLED(CONFIG_TIPC) | |
536721b1 | 2203 | struct tipc_bearer __rcu *tipc_ptr; |
91da11f8 | 2204 | #endif |
d6c6d0bb | 2205 | #if IS_ENABLED(CONFIG_ATALK) |
536721b1 | 2206 | void *atalk_ptr; |
89e58148 | 2207 | #endif |
19ff13f2 | 2208 | #if IS_ENABLED(CONFIG_AX25) |
536721b1 | 2209 | void *ax25_ptr; |
19ff13f2 | 2210 | #endif |
c304eddc | 2211 | #if IS_ENABLED(CONFIG_CFG80211) |
536721b1 | 2212 | struct wireless_dev *ieee80211_ptr; |
c304eddc JK |
2213 | #endif |
2214 | #if IS_ENABLED(CONFIG_IEEE802154) || IS_ENABLED(CONFIG_6LOWPAN) | |
98a18b6f | 2215 | struct wpan_dev *ieee802154_ptr; |
c304eddc | 2216 | #endif |
03c57747 RS |
2217 | #if IS_ENABLED(CONFIG_MPLS_ROUTING) |
2218 | struct mpls_dev __rcu *mpls_ptr; | |
2219 | #endif | |
583be982 JK |
2220 | #if IS_ENABLED(CONFIG_MCTP) |
2221 | struct mctp_dev __rcu *mctp_ptr; | |
2222 | #endif | |
1da177e4 | 2223 | |
9356b8fc | 2224 | /* |
cd13539b | 2225 | * Cache lines mostly used on receive path (including eth_type_trans()) |
9356b8fc | 2226 | */ |
9356b8fc | 2227 | /* Interface address info used in eth_type_trans() */ |
adeef3e3 | 2228 | const unsigned char *dev_addr; |
f001fde5 | 2229 | |
0a9627f2 | 2230 | struct netdev_rx_queue *_rx; |
0a9627f2 | 2231 | unsigned int num_rx_queues; |
62fe0b40 | 2232 | unsigned int real_num_rx_queues; |
0a9627f2 | 2233 | |
7acedaf5 | 2234 | struct bpf_prog __rcu *xdp_prog; |
3b47d303 | 2235 | unsigned long gro_flush_timeout; |
6f8b12d6 | 2236 | int napi_defer_hard_irqs; |
0fe79f28 AD |
2237 | #define GRO_LEGACY_MAX_SIZE 65536u |
2238 | /* TCP minimal MSS is 8 (TCP_MIN_GSO_SIZE), | |
2239 | * and shinfo->gso_segs is a 16bit field. | |
2240 | */ | |
2241 | #define GRO_MAX_SIZE (8 * 65535u) | |
eac1b93c | 2242 | unsigned int gro_max_size; |
9eefedd5 | 2243 | unsigned int gro_ipv4_max_size; |
13ce2daa | 2244 | unsigned int xdp_zc_max_segs; |
61391cde | 2245 | rx_handler_func_t __rcu *rx_handler; |
2246 | void __rcu *rx_handler_data; | |
e420bed0 DB |
2247 | #ifdef CONFIG_NET_XGRESS |
2248 | struct bpf_mprog_entry __rcu *tcx_ingress; | |
d2788d34 | 2249 | #endif |
24824a09 | 2250 | struct netdev_queue __rcu *ingress_queue; |
e687ad60 | 2251 | #ifdef CONFIG_NETFILTER_INGRESS |
960632ec | 2252 | struct nf_hook_entries __rcu *nf_hooks_ingress; |
e687ad60 | 2253 | #endif |
d2788d34 | 2254 | |
536721b1 | 2255 | unsigned char broadcast[MAX_ADDR_LEN]; |
14ffbbb8 TG |
2256 | #ifdef CONFIG_RFS_ACCEL |
2257 | struct cpu_rmap *rx_cpu_rmap; | |
2258 | #endif | |
2259 | struct hlist_node index_hlist; | |
cd13539b ED |
2260 | |
2261 | /* | |
2262 | * Cache lines mostly used on transmit path | |
2263 | */ | |
e8a0464c DM |
2264 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
2265 | unsigned int num_tx_queues; | |
fd2ea0a7 | 2266 | unsigned int real_num_tx_queues; |
5891cd5e | 2267 | struct Qdisc __rcu *qdisc; |
0cd29503 | 2268 | unsigned int tx_queue_len; |
c3f26a26 | 2269 | spinlock_t tx_global_lock; |
75ccae62 THJ |
2270 | |
2271 | struct xdp_dev_bulk_queue __percpu *xdp_bulkq; | |
cd13539b | 2272 | |
bf264145 | 2273 | #ifdef CONFIG_XPS |
044ab86d | 2274 | struct xps_dev_maps __rcu *xps_maps[XPS_MAPS_MAX]; |
bf264145 | 2275 | #endif |
e420bed0 DB |
2276 | #ifdef CONFIG_NET_XGRESS |
2277 | struct bpf_mprog_entry __rcu *tcx_egress; | |
1f211a1b | 2278 | #endif |
42df6e1d LW |
2279 | #ifdef CONFIG_NETFILTER_EGRESS |
2280 | struct nf_hook_entries __rcu *nf_hooks_egress; | |
2281 | #endif | |
0c4f691f | 2282 | |
75ccae62 THJ |
2283 | #ifdef CONFIG_NET_SCHED |
2284 | DECLARE_HASHTABLE (qdisc_hash, 4); | |
2285 | #endif | |
9356b8fc | 2286 | /* These may be needed for future network-power-down code. */ |
9356b8fc | 2287 | struct timer_list watchdog_timer; |
75ccae62 | 2288 | int watchdog_timeo; |
9356b8fc | 2289 | |
829eb208 RP |
2290 | u32 proto_down_reason; |
2291 | ||
1da177e4 | 2292 | struct list_head todo_list; |
919067cc ED |
2293 | |
2294 | #ifdef CONFIG_PCPU_DEV_REFCNT | |
75ccae62 | 2295 | int __percpu *pcpu_refcnt; |
919067cc ED |
2296 | #else |
2297 | refcount_t dev_refcnt; | |
2298 | #endif | |
4d92b95f | 2299 | struct ref_tracker_dir refcnt_tracker; |
1da177e4 | 2300 | |
e014debe | 2301 | struct list_head link_watch_list; |
572a103d | 2302 | |
1da177e4 | 2303 | enum { NETREG_UNINITIALIZED=0, |
b17a7c17 | 2304 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
2305 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
2306 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
2307 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 2308 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
449f4544 ED |
2309 | } reg_state:8; |
2310 | ||
536721b1 | 2311 | bool dismantle; |
a2835763 PM |
2312 | |
2313 | enum { | |
2314 | RTNL_LINK_INITIALIZED, | |
2315 | RTNL_LINK_INITIALIZING, | |
2316 | } rtnl_link_state:16; | |
1da177e4 | 2317 | |
cf124db5 DM |
2318 | bool needs_free_netdev; |
2319 | void (*priv_destructor)(struct net_device *dev); | |
1da177e4 | 2320 | |
1da177e4 | 2321 | #ifdef CONFIG_NETPOLL |
5fbee843 | 2322 | struct netpoll_info __rcu *npinfo; |
1da177e4 | 2323 | #endif |
eae792b7 | 2324 | |
0c5c9fb5 | 2325 | possible_net_t nd_net; |
4a1c5371 | 2326 | |
4951704b | 2327 | /* mid-layer private */ |
4e096a18 OR |
2328 | void *ml_priv; |
2329 | enum netdev_ml_priv_type ml_priv_type; | |
2330 | ||
a7855c78 | 2331 | union { |
536721b1 | 2332 | struct pcpu_lstats __percpu *lstats; |
8f84985f | 2333 | struct pcpu_sw_netstats __percpu *tstats; |
536721b1 | 2334 | struct pcpu_dstats __percpu *dstats; |
a7855c78 | 2335 | }; |
536721b1 | 2336 | |
fb585b44 | 2337 | #if IS_ENABLED(CONFIG_GARP) |
3cc77ec7 | 2338 | struct garp_port __rcu *garp_port; |
fb585b44 TK |
2339 | #endif |
2340 | #if IS_ENABLED(CONFIG_MRP) | |
febf018d | 2341 | struct mrp_port __rcu *mrp_port; |
fb585b44 | 2342 | #endif |
b26ef81c ED |
2343 | #if IS_ENABLED(CONFIG_NET_DROP_MONITOR) |
2344 | struct dm_hw_stat_delta __rcu *dm_private; | |
2345 | #endif | |
5e82b4b2 | 2346 | struct device dev; |
0c509a6c | 2347 | const struct attribute_group *sysfs_groups[4]; |
a953be53 | 2348 | const struct attribute_group *sysfs_rx_queue_group; |
38f7b870 | 2349 | |
38f7b870 | 2350 | const struct rtnl_link_ops *rtnl_link_ops; |
f25f4e44 | 2351 | |
82cc1a7a | 2352 | /* for setting kernel sock attribute on TCP connection setup */ |
34b92e8d | 2353 | #define GSO_MAX_SEGS 65535u |
7c4e983c | 2354 | #define GSO_LEGACY_MAX_SIZE 65536u |
34b92e8d ED |
2355 | /* TCP minimal MSS is 8 (TCP_MIN_GSO_SIZE), |
2356 | * and shinfo->gso_segs is a 16bit field. | |
2357 | */ | |
2358 | #define GSO_MAX_SIZE (8 * GSO_MAX_SEGS) | |
7c4e983c | 2359 | |
82cc1a7a | 2360 | unsigned int gso_max_size; |
14d7b812 JK |
2361 | #define TSO_LEGACY_MAX_SIZE 65536 |
2362 | #define TSO_MAX_SIZE UINT_MAX | |
2363 | unsigned int tso_max_size; | |
30b678d8 | 2364 | u16 gso_max_segs; |
14d7b812 JK |
2365 | #define TSO_MAX_SEGS U16_MAX |
2366 | u16 tso_max_segs; | |
9eefedd5 | 2367 | unsigned int gso_ipv4_max_size; |
743b03a8 | 2368 | |
7a6b6f51 | 2369 | #ifdef CONFIG_DCB |
32953543 | 2370 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
2f90b865 | 2371 | #endif |
ffcfe25b | 2372 | s16 num_tc; |
5e82b4b2 BH |
2373 | struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE]; |
2374 | u8 prio_tc_map[TC_BITMASK + 1]; | |
2f90b865 | 2375 | |
d11ead75 | 2376 | #if IS_ENABLED(CONFIG_FCOE) |
4d288d57 | 2377 | unsigned int fcoe_ddp_xid; |
5bc1421e | 2378 | #endif |
86f8515f | 2379 | #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO) |
5bc1421e | 2380 | struct netprio_map __rcu *priomap; |
4d288d57 | 2381 | #endif |
5e82b4b2 | 2382 | struct phy_device *phydev; |
e679c9c1 | 2383 | struct sfp_bus *sfp_bus; |
1a33e10e | 2384 | struct lock_class_key *qdisc_tx_busylock; |
5e82b4b2 | 2385 | bool proto_down; |
61941143 | 2386 | unsigned wol_enabled:1; |
29863d41 | 2387 | unsigned threaded:1; |
93642e14 JP |
2388 | |
2389 | struct list_head net_notifier_list; | |
30e9bb84 AT |
2390 | |
2391 | #if IS_ENABLED(CONFIG_MACSEC) | |
2392 | /* MACsec management functions */ | |
2393 | const struct macsec_ops *macsec_ops; | |
2394 | #endif | |
cc4e3835 JK |
2395 | const struct udp_tunnel_nic_info *udp_tunnel_nic_info; |
2396 | struct udp_tunnel_nic *udp_tunnel_nic; | |
7f0a8382 AN |
2397 | |
2398 | /* protected by rtnl_lock */ | |
2399 | struct bpf_xdp_entity xdp_state[__MAX_XDP_MODE]; | |
d07b26f5 JK |
2400 | |
2401 | u8 dev_addr_shadow[MAX_ADDR_LEN]; | |
63f13937 | 2402 | netdevice_tracker linkwatch_dev_tracker; |
f12bf6f3 | 2403 | netdevice_tracker watchdog_dev_tracker; |
b2309a71 | 2404 | netdevice_tracker dev_registered_tracker; |
9309f97a | 2405 | struct rtnl_hw_stats64 *offload_xstats_l3; |
02a68a47 JP |
2406 | |
2407 | struct devlink_port *devlink_port; | |
1da177e4 | 2408 | }; |
43cb76d9 | 2409 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 | 2410 | |
02a68a47 JP |
2411 | /* |
2412 | * Driver should use this to assign devlink port instance to a netdevice | |
2413 | * before it registers the netdevice. Therefore devlink_port is static | |
2414 | * during the netdev lifetime after it is registered. | |
2415 | */ | |
2416 | #define SET_NETDEV_DEVLINK_PORT(dev, port) \ | |
2417 | ({ \ | |
2418 | WARN_ON((dev)->reg_state != NETREG_UNINITIALIZED); \ | |
2419 | ((dev)->devlink_port = (port)); \ | |
2420 | }) | |
2421 | ||
b5cdae32 DM |
2422 | static inline bool netif_elide_gro(const struct net_device *dev) |
2423 | { | |
2424 | if (!(dev->features & NETIF_F_GRO) || dev->xdp_prog) | |
2425 | return true; | |
2426 | return false; | |
2427 | } | |
2428 | ||
1da177e4 | 2429 | #define NETDEV_ALIGN 32 |
1da177e4 | 2430 | |
4f57c087 JF |
2431 | static inline |
2432 | int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio) | |
2433 | { | |
2434 | return dev->prio_tc_map[prio & TC_BITMASK]; | |
2435 | } | |
2436 | ||
2437 | static inline | |
2438 | int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc) | |
2439 | { | |
2440 | if (tc >= dev->num_tc) | |
2441 | return -EINVAL; | |
2442 | ||
2443 | dev->prio_tc_map[prio & TC_BITMASK] = tc & TC_BITMASK; | |
2444 | return 0; | |
2445 | } | |
2446 | ||
8d059b0f | 2447 | int netdev_txq_to_tc(struct net_device *dev, unsigned int txq); |
9cf1f6a8 AD |
2448 | void netdev_reset_tc(struct net_device *dev); |
2449 | int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset); | |
2450 | int netdev_set_num_tc(struct net_device *dev, u8 num_tc); | |
4f57c087 JF |
2451 | |
2452 | static inline | |
2453 | int netdev_get_num_tc(struct net_device *dev) | |
2454 | { | |
2455 | return dev->num_tc; | |
2456 | } | |
2457 | ||
f468f21b TT |
2458 | static inline void net_prefetch(void *p) |
2459 | { | |
2460 | prefetch(p); | |
2461 | #if L1_CACHE_BYTES < 128 | |
2462 | prefetch((u8 *)p + L1_CACHE_BYTES); | |
2463 | #endif | |
2464 | } | |
2465 | ||
2466 | static inline void net_prefetchw(void *p) | |
2467 | { | |
2468 | prefetchw(p); | |
2469 | #if L1_CACHE_BYTES < 128 | |
2470 | prefetchw((u8 *)p + L1_CACHE_BYTES); | |
2471 | #endif | |
2472 | } | |
2473 | ||
ffcfe25b AD |
2474 | void netdev_unbind_sb_channel(struct net_device *dev, |
2475 | struct net_device *sb_dev); | |
2476 | int netdev_bind_sb_channel_queue(struct net_device *dev, | |
2477 | struct net_device *sb_dev, | |
2478 | u8 tc, u16 count, u16 offset); | |
2479 | int netdev_set_sb_channel(struct net_device *dev, u16 channel); | |
2480 | static inline int netdev_get_sb_channel(struct net_device *dev) | |
2481 | { | |
2482 | return max_t(int, -dev->num_tc, 0); | |
2483 | } | |
2484 | ||
e8a0464c DM |
2485 | static inline |
2486 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
2487 | unsigned int index) | |
2488 | { | |
1cc6571f | 2489 | DEBUG_NET_WARN_ON_ONCE(index >= dev->num_tx_queues); |
e8a0464c DM |
2490 | return &dev->_tx[index]; |
2491 | } | |
2492 | ||
10c51b56 DB |
2493 | static inline struct netdev_queue *skb_get_tx_queue(const struct net_device *dev, |
2494 | const struct sk_buff *skb) | |
2495 | { | |
2496 | return netdev_get_tx_queue(dev, skb_get_queue_mapping(skb)); | |
2497 | } | |
2498 | ||
e8a0464c DM |
2499 | static inline void netdev_for_each_tx_queue(struct net_device *dev, |
2500 | void (*f)(struct net_device *, | |
2501 | struct netdev_queue *, | |
2502 | void *), | |
2503 | void *arg) | |
2504 | { | |
2505 | unsigned int i; | |
2506 | ||
2507 | for (i = 0; i < dev->num_tx_queues; i++) | |
2508 | f(dev, &dev->_tx[i], arg); | |
2509 | } | |
2510 | ||
1a33e10e CW |
2511 | #define netdev_lockdep_set_classes(dev) \ |
2512 | { \ | |
2513 | static struct lock_class_key qdisc_tx_busylock_key; \ | |
1a33e10e | 2514 | static struct lock_class_key qdisc_xmit_lock_key; \ |
845e0ebb | 2515 | static struct lock_class_key dev_addr_list_lock_key; \ |
1a33e10e CW |
2516 | unsigned int i; \ |
2517 | \ | |
2518 | (dev)->qdisc_tx_busylock = &qdisc_tx_busylock_key; \ | |
845e0ebb CW |
2519 | lockdep_set_class(&(dev)->addr_list_lock, \ |
2520 | &dev_addr_list_lock_key); \ | |
1a33e10e CW |
2521 | for (i = 0; i < (dev)->num_tx_queues; i++) \ |
2522 | lockdep_set_class(&(dev)->_tx[i]._xmit_lock, \ | |
2523 | &qdisc_xmit_lock_key); \ | |
2524 | } | |
2525 | ||
b71b5837 PA |
2526 | u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb, |
2527 | struct net_device *sb_dev); | |
4bd97d51 PA |
2528 | struct netdev_queue *netdev_core_pick_tx(struct net_device *dev, |
2529 | struct sk_buff *skb, | |
2530 | struct net_device *sb_dev); | |
8c4c49df | 2531 | |
871b642a PA |
2532 | /* returns the headroom that the master device needs to take in account |
2533 | * when forwarding to this dev | |
2534 | */ | |
2535 | static inline unsigned netdev_get_fwd_headroom(struct net_device *dev) | |
2536 | { | |
2537 | return dev->priv_flags & IFF_PHONY_HEADROOM ? 0 : dev->needed_headroom; | |
2538 | } | |
2539 | ||
2540 | static inline void netdev_set_rx_headroom(struct net_device *dev, int new_hr) | |
2541 | { | |
2542 | if (dev->netdev_ops->ndo_set_rx_headroom) | |
2543 | dev->netdev_ops->ndo_set_rx_headroom(dev, new_hr); | |
2544 | } | |
2545 | ||
2546 | /* set the device rx headroom to the dev's default */ | |
2547 | static inline void netdev_reset_rx_headroom(struct net_device *dev) | |
2548 | { | |
2549 | netdev_set_rx_headroom(dev, -1); | |
2550 | } | |
2551 | ||
4e096a18 OR |
2552 | static inline void *netdev_get_ml_priv(struct net_device *dev, |
2553 | enum netdev_ml_priv_type type) | |
2554 | { | |
2555 | if (dev->ml_priv_type != type) | |
2556 | return NULL; | |
2557 | ||
2558 | return dev->ml_priv; | |
2559 | } | |
2560 | ||
2561 | static inline void netdev_set_ml_priv(struct net_device *dev, | |
2562 | void *ml_priv, | |
2563 | enum netdev_ml_priv_type type) | |
2564 | { | |
2565 | WARN(dev->ml_priv_type && dev->ml_priv_type != type, | |
2566 | "Overwriting already set ml_priv_type (%u) with different ml_priv_type (%u)!\n", | |
2567 | dev->ml_priv_type, type); | |
2568 | WARN(!dev->ml_priv_type && dev->ml_priv, | |
2569 | "Overwriting already set ml_priv and ml_priv_type is ML_PRIV_NONE!\n"); | |
2570 | ||
2571 | dev->ml_priv = ml_priv; | |
2572 | dev->ml_priv_type = type; | |
2573 | } | |
2574 | ||
c346dca1 YH |
2575 | /* |
2576 | * Net namespace inlines | |
2577 | */ | |
2578 | static inline | |
2579 | struct net *dev_net(const struct net_device *dev) | |
2580 | { | |
c2d9ba9b | 2581 | return read_pnet(&dev->nd_net); |
c346dca1 YH |
2582 | } |
2583 | ||
2584 | static inline | |
f5aa23fd | 2585 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 | 2586 | { |
0c5c9fb5 | 2587 | write_pnet(&dev->nd_net, net); |
c346dca1 YH |
2588 | } |
2589 | ||
bea3348e SH |
2590 | /** |
2591 | * netdev_priv - access network device private data | |
2592 | * @dev: network device | |
2593 | * | |
2594 | * Get network device private data | |
2595 | */ | |
6472ce60 | 2596 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 2597 | { |
1ce8e7b5 | 2598 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
1da177e4 LT |
2599 | } |
2600 | ||
1da177e4 LT |
2601 | /* Set the sysfs physical device reference for the network logical device |
2602 | * if set prior to registration will cause a symlink during initialization. | |
2603 | */ | |
43cb76d9 | 2604 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 2605 | |
384912ed | 2606 | /* Set the sysfs device type for the network logical device to allow |
3f79410c | 2607 | * fine-grained identification of different network device types. For |
5e82b4b2 | 2608 | * example Ethernet, Wireless LAN, Bluetooth, WiMAX etc. |
384912ed MH |
2609 | */ |
2610 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) | |
2611 | ||
82dc3c63 ED |
2612 | /* Default NAPI poll() weight |
2613 | * Device drivers are strongly advised to not use bigger value | |
2614 | */ | |
2615 | #define NAPI_POLL_WEIGHT 64 | |
2616 | ||
58caed3d JK |
2617 | void netif_napi_add_weight(struct net_device *dev, struct napi_struct *napi, |
2618 | int (*poll)(struct napi_struct *, int), int weight); | |
2619 | ||
3b582cc1 | 2620 | /** |
58caed3d JK |
2621 | * netif_napi_add() - initialize a NAPI context |
2622 | * @dev: network device | |
2623 | * @napi: NAPI context | |
2624 | * @poll: polling function | |
3b582cc1 | 2625 | * |
5e82b4b2 BH |
2626 | * netif_napi_add() must be used to initialize a NAPI context prior to calling |
2627 | * *any* of the other NAPI-related functions. | |
3b582cc1 | 2628 | */ |
58caed3d JK |
2629 | static inline void |
2630 | netif_napi_add(struct net_device *dev, struct napi_struct *napi, | |
b48b89f9 | 2631 | int (*poll)(struct napi_struct *, int)) |
58caed3d | 2632 | { |
b48b89f9 | 2633 | netif_napi_add_weight(dev, napi, poll, NAPI_POLL_WEIGHT); |
58caed3d JK |
2634 | } |
2635 | ||
2636 | static inline void | |
2637 | netif_napi_add_tx_weight(struct net_device *dev, | |
2638 | struct napi_struct *napi, | |
2639 | int (*poll)(struct napi_struct *, int), | |
2640 | int weight) | |
2641 | { | |
2642 | set_bit(NAPI_STATE_NO_BUSY_POLL, &napi->state); | |
2643 | netif_napi_add_weight(dev, napi, poll, weight); | |
2644 | } | |
2645 | ||
d64b5e85 | 2646 | /** |
58caed3d JK |
2647 | * netif_napi_add_tx() - initialize a NAPI context to be used for Tx only |
2648 | * @dev: network device | |
2649 | * @napi: NAPI context | |
2650 | * @poll: polling function | |
d64b5e85 ED |
2651 | * |
2652 | * This variant of netif_napi_add() should be used from drivers using NAPI | |
2653 | * to exclusively poll a TX queue. | |
2654 | * This will avoid we add it into napi_hash[], thus polluting this hash table. | |
2655 | */ | |
58caed3d | 2656 | static inline void netif_napi_add_tx(struct net_device *dev, |
d64b5e85 | 2657 | struct napi_struct *napi, |
58caed3d | 2658 | int (*poll)(struct napi_struct *, int)) |
d64b5e85 | 2659 | { |
58caed3d | 2660 | netif_napi_add_tx_weight(dev, napi, poll, NAPI_POLL_WEIGHT); |
d64b5e85 ED |
2661 | } |
2662 | ||
5198d545 JK |
2663 | /** |
2664 | * __netif_napi_del - remove a NAPI context | |
2665 | * @napi: NAPI context | |
2666 | * | |
2667 | * Warning: caller must observe RCU grace period before freeing memory | |
2668 | * containing @napi. Drivers might want to call this helper to combine | |
2669 | * all the needed RCU grace periods into a single one. | |
2670 | */ | |
2671 | void __netif_napi_del(struct napi_struct *napi); | |
2672 | ||
d8156534 | 2673 | /** |
5e82b4b2 BH |
2674 | * netif_napi_del - remove a NAPI context |
2675 | * @napi: NAPI context | |
d8156534 | 2676 | * |
5e82b4b2 | 2677 | * netif_napi_del() removes a NAPI context from the network device NAPI list |
d8156534 | 2678 | */ |
5198d545 JK |
2679 | static inline void netif_napi_del(struct napi_struct *napi) |
2680 | { | |
2681 | __netif_napi_del(napi); | |
2682 | synchronize_net(); | |
2683 | } | |
d565b0a1 | 2684 | |
1da177e4 | 2685 | struct packet_type { |
f2ccd8fa | 2686 | __be16 type; /* This is really htons(ether_type). */ |
fa788d98 | 2687 | bool ignore_outgoing; |
f2ccd8fa | 2688 | struct net_device *dev; /* NULL is wildcarded here */ |
f1d9268e | 2689 | netdevice_tracker dev_tracker; |
f2ccd8fa DM |
2690 | int (*func) (struct sk_buff *, |
2691 | struct net_device *, | |
2692 | struct packet_type *, | |
2693 | struct net_device *); | |
17266ee9 EC |
2694 | void (*list_func) (struct list_head *, |
2695 | struct packet_type *, | |
2696 | struct net_device *); | |
c0de08d0 EL |
2697 | bool (*id_match)(struct packet_type *ptype, |
2698 | struct sock *sk); | |
47934e06 | 2699 | struct net *af_packet_net; |
1da177e4 LT |
2700 | void *af_packet_priv; |
2701 | struct list_head list; | |
2702 | }; | |
2703 | ||
f191a1d1 | 2704 | struct offload_callbacks { |
576a30eb | 2705 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
c8f44aff | 2706 | netdev_features_t features); |
d4546c25 DM |
2707 | struct sk_buff *(*gro_receive)(struct list_head *head, |
2708 | struct sk_buff *skb); | |
299603e8 | 2709 | int (*gro_complete)(struct sk_buff *skb, int nhoff); |
f191a1d1 VY |
2710 | }; |
2711 | ||
2712 | struct packet_offload { | |
2713 | __be16 type; /* This is really htons(ether_type). */ | |
bdef7de4 | 2714 | u16 priority; |
f191a1d1 VY |
2715 | struct offload_callbacks callbacks; |
2716 | struct list_head list; | |
1da177e4 LT |
2717 | }; |
2718 | ||
5e82b4b2 | 2719 | /* often modified stats are per-CPU, other are shared (netdev->stats) */ |
8f84985f | 2720 | struct pcpu_sw_netstats { |
9962acef ED |
2721 | u64_stats_t rx_packets; |
2722 | u64_stats_t rx_bytes; | |
2723 | u64_stats_t tx_packets; | |
2724 | u64_stats_t tx_bytes; | |
8f84985f | 2725 | struct u64_stats_sync syncp; |
9a5ee462 | 2726 | } __aligned(4 * sizeof(u64)); |
52bb6677 LR |
2727 | |
2728 | struct pcpu_lstats { | |
fd2f4737 ED |
2729 | u64_stats_t packets; |
2730 | u64_stats_t bytes; | |
52bb6677 | 2731 | struct u64_stats_sync syncp; |
9a5ee462 | 2732 | } __aligned(2 * sizeof(u64)); |
8f84985f | 2733 | |
de7d5084 ED |
2734 | void dev_lstats_read(struct net_device *dev, u64 *packets, u64 *bytes); |
2735 | ||
451b05f4 FF |
2736 | static inline void dev_sw_netstats_rx_add(struct net_device *dev, unsigned int len) |
2737 | { | |
2738 | struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats); | |
2739 | ||
2740 | u64_stats_update_begin(&tstats->syncp); | |
9962acef ED |
2741 | u64_stats_add(&tstats->rx_bytes, len); |
2742 | u64_stats_inc(&tstats->rx_packets); | |
451b05f4 FF |
2743 | u64_stats_update_end(&tstats->syncp); |
2744 | } | |
2745 | ||
d3fd6548 HK |
2746 | static inline void dev_sw_netstats_tx_add(struct net_device *dev, |
2747 | unsigned int packets, | |
2748 | unsigned int len) | |
2749 | { | |
2750 | struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats); | |
2751 | ||
2752 | u64_stats_update_begin(&tstats->syncp); | |
9962acef ED |
2753 | u64_stats_add(&tstats->tx_bytes, len); |
2754 | u64_stats_add(&tstats->tx_packets, packets); | |
d3fd6548 HK |
2755 | u64_stats_update_end(&tstats->syncp); |
2756 | } | |
2757 | ||
dd5382a0 ED |
2758 | static inline void dev_lstats_add(struct net_device *dev, unsigned int len) |
2759 | { | |
2760 | struct pcpu_lstats *lstats = this_cpu_ptr(dev->lstats); | |
2761 | ||
2762 | u64_stats_update_begin(&lstats->syncp); | |
fd2f4737 ED |
2763 | u64_stats_add(&lstats->bytes, len); |
2764 | u64_stats_inc(&lstats->packets); | |
dd5382a0 ED |
2765 | u64_stats_update_end(&lstats->syncp); |
2766 | } | |
2767 | ||
aabc92bb PNA |
2768 | #define __netdev_alloc_pcpu_stats(type, gfp) \ |
2769 | ({ \ | |
2770 | typeof(type) __percpu *pcpu_stats = alloc_percpu_gfp(type, gfp);\ | |
2771 | if (pcpu_stats) { \ | |
2772 | int __cpu; \ | |
2773 | for_each_possible_cpu(__cpu) { \ | |
2774 | typeof(type) *stat; \ | |
2775 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ | |
2776 | u64_stats_init(&stat->syncp); \ | |
2777 | } \ | |
2778 | } \ | |
2779 | pcpu_stats; \ | |
1c213bd2 WC |
2780 | }) |
2781 | ||
aabc92bb | 2782 | #define netdev_alloc_pcpu_stats(type) \ |
326fcfa5 | 2783 | __netdev_alloc_pcpu_stats(type, GFP_KERNEL) |
aabc92bb | 2784 | |
81b01894 HK |
2785 | #define devm_netdev_alloc_pcpu_stats(dev, type) \ |
2786 | ({ \ | |
2787 | typeof(type) __percpu *pcpu_stats = devm_alloc_percpu(dev, type);\ | |
2788 | if (pcpu_stats) { \ | |
2789 | int __cpu; \ | |
2790 | for_each_possible_cpu(__cpu) { \ | |
2791 | typeof(type) *stat; \ | |
2792 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ | |
2793 | u64_stats_init(&stat->syncp); \ | |
2794 | } \ | |
2795 | } \ | |
2796 | pcpu_stats; \ | |
2797 | }) | |
2798 | ||
764f5e54 JP |
2799 | enum netdev_lag_tx_type { |
2800 | NETDEV_LAG_TX_TYPE_UNKNOWN, | |
2801 | NETDEV_LAG_TX_TYPE_RANDOM, | |
2802 | NETDEV_LAG_TX_TYPE_BROADCAST, | |
2803 | NETDEV_LAG_TX_TYPE_ROUNDROBIN, | |
2804 | NETDEV_LAG_TX_TYPE_ACTIVEBACKUP, | |
2805 | NETDEV_LAG_TX_TYPE_HASH, | |
2806 | }; | |
2807 | ||
f44aa9ef JH |
2808 | enum netdev_lag_hash { |
2809 | NETDEV_LAG_HASH_NONE, | |
2810 | NETDEV_LAG_HASH_L2, | |
2811 | NETDEV_LAG_HASH_L34, | |
2812 | NETDEV_LAG_HASH_L23, | |
2813 | NETDEV_LAG_HASH_E23, | |
2814 | NETDEV_LAG_HASH_E34, | |
7b8fc010 | 2815 | NETDEV_LAG_HASH_VLAN_SRCMAC, |
f44aa9ef JH |
2816 | NETDEV_LAG_HASH_UNKNOWN, |
2817 | }; | |
2818 | ||
764f5e54 JP |
2819 | struct netdev_lag_upper_info { |
2820 | enum netdev_lag_tx_type tx_type; | |
f44aa9ef | 2821 | enum netdev_lag_hash hash_type; |
764f5e54 JP |
2822 | }; |
2823 | ||
fb1b2e3c JP |
2824 | struct netdev_lag_lower_state_info { |
2825 | u8 link_up : 1, | |
2826 | tx_enabled : 1; | |
2827 | }; | |
2828 | ||
1da177e4 LT |
2829 | #include <linux/notifier.h> |
2830 | ||
ede2762d KT |
2831 | /* netdevice notifier chain. Please remember to update netdev_cmd_to_name() |
2832 | * and the rtnetlink notification exclusion list in rtnetlink_event() when | |
2833 | * adding new types. | |
dcfe1421 | 2834 | */ |
ede2762d KT |
2835 | enum netdev_cmd { |
2836 | NETDEV_UP = 1, /* For now you can't veto a device up/down */ | |
2837 | NETDEV_DOWN, | |
2838 | NETDEV_REBOOT, /* Tell a protocol stack a network interface | |
dcfe1421 AW |
2839 | detected a hardware crash and restarted |
2840 | - we can use this eg to kick tcp sessions | |
2841 | once done */ | |
ede2762d KT |
2842 | NETDEV_CHANGE, /* Notify device state change */ |
2843 | NETDEV_REGISTER, | |
2844 | NETDEV_UNREGISTER, | |
2845 | NETDEV_CHANGEMTU, /* notify after mtu change happened */ | |
1570415f PM |
2846 | NETDEV_CHANGEADDR, /* notify after the address change */ |
2847 | NETDEV_PRE_CHANGEADDR, /* notify before the address change */ | |
ede2762d KT |
2848 | NETDEV_GOING_DOWN, |
2849 | NETDEV_CHANGENAME, | |
2850 | NETDEV_FEAT_CHANGE, | |
2851 | NETDEV_BONDING_FAILOVER, | |
2852 | NETDEV_PRE_UP, | |
2853 | NETDEV_PRE_TYPE_CHANGE, | |
2854 | NETDEV_POST_TYPE_CHANGE, | |
2855 | NETDEV_POST_INIT, | |
02a68a47 | 2856 | NETDEV_PRE_UNINIT, |
ede2762d KT |
2857 | NETDEV_RELEASE, |
2858 | NETDEV_NOTIFY_PEERS, | |
2859 | NETDEV_JOIN, | |
2860 | NETDEV_CHANGEUPPER, | |
2861 | NETDEV_RESEND_IGMP, | |
2862 | NETDEV_PRECHANGEMTU, /* notify before mtu change happened */ | |
2863 | NETDEV_CHANGEINFODATA, | |
2864 | NETDEV_BONDING_INFO, | |
2865 | NETDEV_PRECHANGEUPPER, | |
2866 | NETDEV_CHANGELOWERSTATE, | |
2867 | NETDEV_UDP_TUNNEL_PUSH_INFO, | |
2868 | NETDEV_UDP_TUNNEL_DROP_INFO, | |
2869 | NETDEV_CHANGE_TX_QUEUE_LEN, | |
9daae9bd GP |
2870 | NETDEV_CVLAN_FILTER_PUSH_INFO, |
2871 | NETDEV_CVLAN_FILTER_DROP_INFO, | |
2872 | NETDEV_SVLAN_FILTER_PUSH_INFO, | |
2873 | NETDEV_SVLAN_FILTER_DROP_INFO, | |
9309f97a PM |
2874 | NETDEV_OFFLOAD_XSTATS_ENABLE, |
2875 | NETDEV_OFFLOAD_XSTATS_DISABLE, | |
2876 | NETDEV_OFFLOAD_XSTATS_REPORT_USED, | |
2877 | NETDEV_OFFLOAD_XSTATS_REPORT_DELTA, | |
d3d854fd | 2878 | NETDEV_XDP_FEAT_CHANGE, |
ede2762d KT |
2879 | }; |
2880 | const char *netdev_cmd_to_name(enum netdev_cmd cmd); | |
dcfe1421 | 2881 | |
f629d208 JP |
2882 | int register_netdevice_notifier(struct notifier_block *nb); |
2883 | int unregister_netdevice_notifier(struct notifier_block *nb); | |
a30c7b42 JP |
2884 | int register_netdevice_notifier_net(struct net *net, struct notifier_block *nb); |
2885 | int unregister_netdevice_notifier_net(struct net *net, | |
2886 | struct notifier_block *nb); | |
93642e14 JP |
2887 | int register_netdevice_notifier_dev_net(struct net_device *dev, |
2888 | struct notifier_block *nb, | |
2889 | struct netdev_net_notifier *nn); | |
2890 | int unregister_netdevice_notifier_dev_net(struct net_device *dev, | |
2891 | struct notifier_block *nb, | |
2892 | struct netdev_net_notifier *nn); | |
351638e7 JP |
2893 | |
2894 | struct netdev_notifier_info { | |
51d0c047 DA |
2895 | struct net_device *dev; |
2896 | struct netlink_ext_ack *extack; | |
351638e7 JP |
2897 | }; |
2898 | ||
af7d6cce SD |
2899 | struct netdev_notifier_info_ext { |
2900 | struct netdev_notifier_info info; /* must be first */ | |
2901 | union { | |
2902 | u32 mtu; | |
2903 | } ext; | |
2904 | }; | |
2905 | ||
be9efd36 JP |
2906 | struct netdev_notifier_change_info { |
2907 | struct netdev_notifier_info info; /* must be first */ | |
2908 | unsigned int flags_changed; | |
2909 | }; | |
2910 | ||
0e4ead9d JP |
2911 | struct netdev_notifier_changeupper_info { |
2912 | struct netdev_notifier_info info; /* must be first */ | |
2913 | struct net_device *upper_dev; /* new upper dev */ | |
2914 | bool master; /* is upper dev master */ | |
5e82b4b2 | 2915 | bool linking; /* is the notification for link or unlink */ |
29bf24af | 2916 | void *upper_info; /* upper dev info */ |
0e4ead9d JP |
2917 | }; |
2918 | ||
04d48266 JP |
2919 | struct netdev_notifier_changelowerstate_info { |
2920 | struct netdev_notifier_info info; /* must be first */ | |
2921 | void *lower_state_info; /* is lower dev state */ | |
2922 | }; | |
2923 | ||
1570415f PM |
2924 | struct netdev_notifier_pre_changeaddr_info { |
2925 | struct netdev_notifier_info info; /* must be first */ | |
2926 | const unsigned char *dev_addr; | |
2927 | }; | |
2928 | ||
9309f97a PM |
2929 | enum netdev_offload_xstats_type { |
2930 | NETDEV_OFFLOAD_XSTATS_TYPE_L3 = 1, | |
2931 | }; | |
2932 | ||
2933 | struct netdev_notifier_offload_xstats_info { | |
2934 | struct netdev_notifier_info info; /* must be first */ | |
2935 | enum netdev_offload_xstats_type type; | |
2936 | ||
2937 | union { | |
2938 | /* NETDEV_OFFLOAD_XSTATS_REPORT_DELTA */ | |
2939 | struct netdev_notifier_offload_xstats_rd *report_delta; | |
2940 | /* NETDEV_OFFLOAD_XSTATS_REPORT_USED */ | |
2941 | struct netdev_notifier_offload_xstats_ru *report_used; | |
2942 | }; | |
2943 | }; | |
2944 | ||
2945 | int netdev_offload_xstats_enable(struct net_device *dev, | |
2946 | enum netdev_offload_xstats_type type, | |
2947 | struct netlink_ext_ack *extack); | |
2948 | int netdev_offload_xstats_disable(struct net_device *dev, | |
2949 | enum netdev_offload_xstats_type type); | |
2950 | bool netdev_offload_xstats_enabled(const struct net_device *dev, | |
2951 | enum netdev_offload_xstats_type type); | |
2952 | int netdev_offload_xstats_get(struct net_device *dev, | |
2953 | enum netdev_offload_xstats_type type, | |
2954 | struct rtnl_hw_stats64 *stats, bool *used, | |
2955 | struct netlink_ext_ack *extack); | |
2956 | void | |
2957 | netdev_offload_xstats_report_delta(struct netdev_notifier_offload_xstats_rd *rd, | |
2958 | const struct rtnl_hw_stats64 *stats); | |
2959 | void | |
2960 | netdev_offload_xstats_report_used(struct netdev_notifier_offload_xstats_ru *ru); | |
2961 | void netdev_offload_xstats_push_delta(struct net_device *dev, | |
2962 | enum netdev_offload_xstats_type type, | |
2963 | const struct rtnl_hw_stats64 *stats); | |
2964 | ||
75538c2b CW |
2965 | static inline void netdev_notifier_info_init(struct netdev_notifier_info *info, |
2966 | struct net_device *dev) | |
2967 | { | |
2968 | info->dev = dev; | |
51d0c047 | 2969 | info->extack = NULL; |
75538c2b CW |
2970 | } |
2971 | ||
351638e7 JP |
2972 | static inline struct net_device * |
2973 | netdev_notifier_info_to_dev(const struct netdev_notifier_info *info) | |
2974 | { | |
2975 | return info->dev; | |
2976 | } | |
2977 | ||
51d0c047 DA |
2978 | static inline struct netlink_ext_ack * |
2979 | netdev_notifier_info_to_extack(const struct netdev_notifier_info *info) | |
2980 | { | |
2981 | return info->extack; | |
2982 | } | |
2983 | ||
f629d208 | 2984 | int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
88c0a6b5 VO |
2985 | int call_netdevice_notifiers_info(unsigned long val, |
2986 | struct netdev_notifier_info *info); | |
dcfe1421 | 2987 | |
1da177e4 LT |
2988 | extern rwlock_t dev_base_lock; /* Device list lock */ |
2989 | ||
881d966b EB |
2990 | #define for_each_netdev(net, d) \ |
2991 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
dcbccbd4 EB |
2992 | #define for_each_netdev_reverse(net, d) \ |
2993 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) | |
c6d14c84 ED |
2994 | #define for_each_netdev_rcu(net, d) \ |
2995 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b EB |
2996 | #define for_each_netdev_safe(net, d, n) \ |
2997 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
2998 | #define for_each_netdev_continue(net, d) \ | |
2999 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
afa0df59 JP |
3000 | #define for_each_netdev_continue_reverse(net, d) \ |
3001 | list_for_each_entry_continue_reverse(d, &(net)->dev_base_head, \ | |
3002 | dev_list) | |
254245d2 | 3003 | #define for_each_netdev_continue_rcu(net, d) \ |
3004 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) | |
8a7fbfab | 3005 | #define for_each_netdev_in_bond_rcu(bond, slave) \ |
3006 | for_each_netdev_rcu(&init_net, slave) \ | |
4ccce02e | 3007 | if (netdev_master_upper_dev_get_rcu(slave) == (bond)) |
881d966b | 3008 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
7562f876 | 3009 | |
84e00d9b JK |
3010 | #define for_each_netdev_dump(net, d, ifindex) \ |
3011 | xa_for_each_start(&(net)->dev_by_index, (ifindex), (d), (ifindex)) | |
3012 | ||
a050c33f DL |
3013 | static inline struct net_device *next_net_device(struct net_device *dev) |
3014 | { | |
3015 | struct list_head *lh; | |
3016 | struct net *net; | |
3017 | ||
c346dca1 | 3018 | net = dev_net(dev); |
a050c33f DL |
3019 | lh = dev->dev_list.next; |
3020 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
3021 | } | |
3022 | ||
ce81b76a ED |
3023 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
3024 | { | |
3025 | struct list_head *lh; | |
3026 | struct net *net; | |
3027 | ||
3028 | net = dev_net(dev); | |
ccf43438 | 3029 | lh = rcu_dereference(list_next_rcu(&dev->dev_list)); |
ce81b76a ED |
3030 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
3031 | } | |
3032 | ||
a050c33f DL |
3033 | static inline struct net_device *first_net_device(struct net *net) |
3034 | { | |
3035 | return list_empty(&net->dev_base_head) ? NULL : | |
3036 | net_device_entry(net->dev_base_head.next); | |
3037 | } | |
7562f876 | 3038 | |
ccf43438 ED |
3039 | static inline struct net_device *first_net_device_rcu(struct net *net) |
3040 | { | |
3041 | struct list_head *lh = rcu_dereference(list_next_rcu(&net->dev_base_head)); | |
3042 | ||
3043 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
3044 | } | |
3045 | ||
f629d208 | 3046 | int netdev_boot_setup_check(struct net_device *dev); |
f629d208 JP |
3047 | struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, |
3048 | const char *hwaddr); | |
3049 | struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
f629d208 JP |
3050 | void dev_add_pack(struct packet_type *pt); |
3051 | void dev_remove_pack(struct packet_type *pt); | |
3052 | void __dev_remove_pack(struct packet_type *pt); | |
3053 | void dev_add_offload(struct packet_offload *po); | |
3054 | void dev_remove_offload(struct packet_offload *po); | |
f629d208 | 3055 | |
a54acb3a | 3056 | int dev_get_iflink(const struct net_device *dev); |
fc4099f1 | 3057 | int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb); |
ddb94eaf PNA |
3058 | int dev_fill_forward_path(const struct net_device *dev, const u8 *daddr, |
3059 | struct net_device_path_stack *stack); | |
6c555490 WC |
3060 | struct net_device *__dev_get_by_flags(struct net *net, unsigned short flags, |
3061 | unsigned short mask); | |
f629d208 JP |
3062 | struct net_device *dev_get_by_name(struct net *net, const char *name); |
3063 | struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); | |
3064 | struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
75ea27d0 | 3065 | bool netdev_name_in_use(struct net *net, const char *name); |
f629d208 | 3066 | int dev_alloc_name(struct net_device *dev, const char *name); |
00f54e68 | 3067 | int dev_open(struct net_device *dev, struct netlink_ext_ack *extack); |
7051b88a | 3068 | void dev_close(struct net_device *dev); |
3069 | void dev_close_many(struct list_head *head, bool unlink); | |
f629d208 | 3070 | void dev_disable_lro(struct net_device *dev); |
0c4b51f0 | 3071 | int dev_loopback_xmit(struct net *net, struct sock *sk, struct sk_buff *newskb); |
a4ea8a3d | 3072 | u16 dev_pick_tx_zero(struct net_device *dev, struct sk_buff *skb, |
a350ecce | 3073 | struct net_device *sb_dev); |
a4ea8a3d | 3074 | u16 dev_pick_tx_cpu_id(struct net_device *dev, struct sk_buff *skb, |
a350ecce | 3075 | struct net_device *sb_dev); |
36ccdf85 | 3076 | |
c526fd8f | 3077 | int __dev_queue_xmit(struct sk_buff *skb, struct net_device *sb_dev); |
36ccdf85 BT |
3078 | int __dev_direct_xmit(struct sk_buff *skb, u16 queue_id); |
3079 | ||
c526fd8f PB |
3080 | static inline int dev_queue_xmit(struct sk_buff *skb) |
3081 | { | |
3082 | return __dev_queue_xmit(skb, NULL); | |
3083 | } | |
3084 | ||
3085 | static inline int dev_queue_xmit_accel(struct sk_buff *skb, | |
3086 | struct net_device *sb_dev) | |
3087 | { | |
3088 | return __dev_queue_xmit(skb, sb_dev); | |
3089 | } | |
3090 | ||
36ccdf85 BT |
3091 | static inline int dev_direct_xmit(struct sk_buff *skb, u16 queue_id) |
3092 | { | |
3093 | int ret; | |
3094 | ||
3095 | ret = __dev_direct_xmit(skb, queue_id); | |
3096 | if (!dev_xmit_complete(ret)) | |
3097 | kfree_skb(skb); | |
3098 | return ret; | |
3099 | } | |
3100 | ||
f629d208 JP |
3101 | int register_netdevice(struct net_device *dev); |
3102 | void unregister_netdevice_queue(struct net_device *dev, struct list_head *head); | |
3103 | void unregister_netdevice_many(struct list_head *head); | |
44a0873d ED |
3104 | static inline void unregister_netdevice(struct net_device *dev) |
3105 | { | |
3106 | unregister_netdevice_queue(dev, NULL); | |
3107 | } | |
3108 | ||
f629d208 JP |
3109 | int netdev_refcnt_read(const struct net_device *dev); |
3110 | void free_netdev(struct net_device *dev); | |
74d332c1 | 3111 | void netdev_freemem(struct net_device *dev); |
f629d208 | 3112 | int init_dummy_netdev(struct net_device *dev); |
937f1ba5 | 3113 | |
cff9f12b MG |
3114 | struct net_device *netdev_get_xmit_slave(struct net_device *dev, |
3115 | struct sk_buff *skb, | |
3116 | bool all_slaves); | |
719a402c TT |
3117 | struct net_device *netdev_sk_get_lowest_dev(struct net_device *dev, |
3118 | struct sock *sk); | |
f629d208 JP |
3119 | struct net_device *dev_get_by_index(struct net *net, int ifindex); |
3120 | struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
70f7457a JK |
3121 | struct net_device *netdev_get_by_index(struct net *net, int ifindex, |
3122 | netdevice_tracker *tracker, gfp_t gfp); | |
3123 | struct net_device *netdev_get_by_name(struct net *net, const char *name, | |
3124 | netdevice_tracker *tracker, gfp_t gfp); | |
f629d208 | 3125 | struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); |
90b602f8 | 3126 | struct net_device *dev_get_by_napi_id(unsigned int napi_id); |
5f114163 | 3127 | |
0c4e8581 SH |
3128 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
3129 | unsigned short type, | |
3b04ddde | 3130 | const void *daddr, const void *saddr, |
95c96174 | 3131 | unsigned int len) |
0c4e8581 | 3132 | { |
f1ecfd5d | 3133 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 3134 | return 0; |
3b04ddde SH |
3135 | |
3136 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
3137 | } |
3138 | ||
b95cce35 SH |
3139 | static inline int dev_parse_header(const struct sk_buff *skb, |
3140 | unsigned char *haddr) | |
3141 | { | |
3142 | const struct net_device *dev = skb->dev; | |
3143 | ||
1b83336b | 3144 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 3145 | return 0; |
3b04ddde | 3146 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
3147 | } |
3148 | ||
e78b2915 MM |
3149 | static inline __be16 dev_parse_header_protocol(const struct sk_buff *skb) |
3150 | { | |
3151 | const struct net_device *dev = skb->dev; | |
3152 | ||
3153 | if (!dev->header_ops || !dev->header_ops->parse_protocol) | |
3154 | return 0; | |
3155 | return dev->header_ops->parse_protocol(skb); | |
3156 | } | |
3157 | ||
2793a23a WB |
3158 | /* ll_header must have at least hard_header_len allocated */ |
3159 | static inline bool dev_validate_header(const struct net_device *dev, | |
3160 | char *ll_header, int len) | |
3161 | { | |
3162 | if (likely(len >= dev->hard_header_len)) | |
3163 | return true; | |
217e6fa2 WB |
3164 | if (len < dev->min_header_len) |
3165 | return false; | |
2793a23a WB |
3166 | |
3167 | if (capable(CAP_SYS_RAWIO)) { | |
3168 | memset(ll_header + len, 0, dev->hard_header_len - len); | |
3169 | return true; | |
3170 | } | |
3171 | ||
3172 | if (dev->header_ops && dev->header_ops->validate) | |
3173 | return dev->header_ops->validate(ll_header, len); | |
3174 | ||
3175 | return false; | |
3176 | } | |
3177 | ||
d5496990 EB |
3178 | static inline bool dev_has_header(const struct net_device *dev) |
3179 | { | |
3180 | return dev->header_ops && dev->header_ops->create; | |
3181 | } | |
3182 | ||
1da177e4 | 3183 | /* |
5e82b4b2 | 3184 | * Incoming packets are placed on per-CPU queues |
1da177e4 | 3185 | */ |
d94d9fee | 3186 | struct softnet_data { |
1da177e4 | 3187 | struct list_head poll_list; |
6e7676c1 | 3188 | struct sk_buff_head process_queue; |
1da177e4 | 3189 | |
dee42870 | 3190 | /* stats */ |
cd7b5396 DM |
3191 | unsigned int processed; |
3192 | unsigned int time_squeeze; | |
fd793d89 | 3193 | #ifdef CONFIG_RPS |
88751275 | 3194 | struct softnet_data *rps_ipi_list; |
4cdb1e2e | 3195 | #endif |
87eff2ec | 3196 | |
c59647c0 | 3197 | bool in_net_rx_action; |
87eff2ec ED |
3198 | bool in_napi_threaded_poll; |
3199 | ||
4cdb1e2e ED |
3200 | #ifdef CONFIG_NET_FLOW_LIMIT |
3201 | struct sd_flow_limit __rcu *flow_limit; | |
3202 | #endif | |
3203 | struct Qdisc *output_queue; | |
3204 | struct Qdisc **output_queue_tailp; | |
3205 | struct sk_buff *completion_queue; | |
f53c7239 SK |
3206 | #ifdef CONFIG_XFRM_OFFLOAD |
3207 | struct sk_buff_head xfrm_backlog; | |
3208 | #endif | |
97cdcf37 FW |
3209 | /* written and read only by owning cpu: */ |
3210 | struct { | |
3211 | u16 recursion; | |
3212 | u8 more; | |
2f1e85b1 TZ |
3213 | #ifdef CONFIG_NET_EGRESS |
3214 | u8 skip_txqueue; | |
3215 | #endif | |
97cdcf37 | 3216 | } xmit; |
4cdb1e2e | 3217 | #ifdef CONFIG_RPS |
501e7ef5 ED |
3218 | /* input_queue_head should be written by cpu owning this struct, |
3219 | * and only read by other cpus. Worth using a cache line. | |
3220 | */ | |
3221 | unsigned int input_queue_head ____cacheline_aligned_in_smp; | |
3222 | ||
3223 | /* Elements below can be accessed between CPUs for RPS/RFS */ | |
966a9671 | 3224 | call_single_data_t csd ____cacheline_aligned_in_smp; |
88751275 ED |
3225 | struct softnet_data *rps_ipi_next; |
3226 | unsigned int cpu; | |
76cc8b13 | 3227 | unsigned int input_queue_tail; |
1e94d72f | 3228 | #endif |
14d898f3 | 3229 | unsigned int received_rps; |
95c96174 | 3230 | unsigned int dropped; |
0a9627f2 | 3231 | struct sk_buff_head input_pkt_queue; |
bea3348e | 3232 | struct napi_struct backlog; |
99bbc707 | 3233 | |
68822bdf ED |
3234 | /* Another possibly contended cache line */ |
3235 | spinlock_t defer_lock ____cacheline_aligned_in_smp; | |
3236 | int defer_count; | |
97e719a8 | 3237 | int defer_ipi_scheduled; |
68822bdf ED |
3238 | struct sk_buff *defer_list; |
3239 | call_single_data_t defer_csd; | |
1da177e4 LT |
3240 | }; |
3241 | ||
76cc8b13 | 3242 | static inline void input_queue_head_incr(struct softnet_data *sd) |
fec5e652 TH |
3243 | { |
3244 | #ifdef CONFIG_RPS | |
76cc8b13 TH |
3245 | sd->input_queue_head++; |
3246 | #endif | |
3247 | } | |
3248 | ||
3249 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, | |
3250 | unsigned int *qtail) | |
3251 | { | |
3252 | #ifdef CONFIG_RPS | |
3253 | *qtail = ++sd->input_queue_tail; | |
fec5e652 TH |
3254 | #endif |
3255 | } | |
3256 | ||
0a9627f2 | 3257 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
1da177e4 | 3258 | |
97cdcf37 FW |
3259 | static inline int dev_recursion_level(void) |
3260 | { | |
28b05b92 | 3261 | return this_cpu_read(softnet_data.xmit.recursion); |
97cdcf37 FW |
3262 | } |
3263 | ||
fb7861d1 | 3264 | #define XMIT_RECURSION_LIMIT 8 |
97cdcf37 FW |
3265 | static inline bool dev_xmit_recursion(void) |
3266 | { | |
3267 | return unlikely(__this_cpu_read(softnet_data.xmit.recursion) > | |
3268 | XMIT_RECURSION_LIMIT); | |
3269 | } | |
3270 | ||
3271 | static inline void dev_xmit_recursion_inc(void) | |
3272 | { | |
3273 | __this_cpu_inc(softnet_data.xmit.recursion); | |
3274 | } | |
3275 | ||
3276 | static inline void dev_xmit_recursion_dec(void) | |
3277 | { | |
3278 | __this_cpu_dec(softnet_data.xmit.recursion); | |
3279 | } | |
3280 | ||
f629d208 | 3281 | void __netif_schedule(struct Qdisc *q); |
46e5da40 | 3282 | void netif_schedule_queue(struct netdev_queue *txq); |
86d804e1 | 3283 | |
fd2ea0a7 DM |
3284 | static inline void netif_tx_schedule_all(struct net_device *dev) |
3285 | { | |
3286 | unsigned int i; | |
3287 | ||
3288 | for (i = 0; i < dev->num_tx_queues; i++) | |
3289 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
3290 | } | |
3291 | ||
f9a7cbbf | 3292 | static __always_inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
d29f749e | 3293 | { |
73466498 | 3294 | clear_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3295 | } |
3296 | ||
bea3348e SH |
3297 | /** |
3298 | * netif_start_queue - allow transmit | |
3299 | * @dev: network device | |
3300 | * | |
3301 | * Allow upper layers to call the device hard_start_xmit routine. | |
3302 | */ | |
1da177e4 LT |
3303 | static inline void netif_start_queue(struct net_device *dev) |
3304 | { | |
e8a0464c | 3305 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3306 | } |
3307 | ||
fd2ea0a7 DM |
3308 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
3309 | { | |
3310 | unsigned int i; | |
3311 | ||
3312 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3313 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
3314 | netif_tx_start_queue(txq); | |
3315 | } | |
3316 | } | |
3317 | ||
46e5da40 | 3318 | void netif_tx_wake_queue(struct netdev_queue *dev_queue); |
79d16385 | 3319 | |
d29f749e DJ |
3320 | /** |
3321 | * netif_wake_queue - restart transmit | |
3322 | * @dev: network device | |
3323 | * | |
3324 | * Allow upper layers to call the device hard_start_xmit routine. | |
3325 | * Used for flow control when transmit resources are available. | |
3326 | */ | |
79d16385 DM |
3327 | static inline void netif_wake_queue(struct net_device *dev) |
3328 | { | |
e8a0464c | 3329 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3330 | } |
3331 | ||
fd2ea0a7 DM |
3332 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
3333 | { | |
3334 | unsigned int i; | |
3335 | ||
3336 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3337 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
3338 | netif_tx_wake_queue(txq); | |
3339 | } | |
3340 | } | |
3341 | ||
f9a7cbbf | 3342 | static __always_inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
d29f749e | 3343 | { |
c91c46de | 3344 | /* Must be an atomic op see netif_txq_try_stop() */ |
73466498 | 3345 | set_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3346 | } |
3347 | ||
bea3348e SH |
3348 | /** |
3349 | * netif_stop_queue - stop transmitted packets | |
3350 | * @dev: network device | |
3351 | * | |
3352 | * Stop upper layers calling the device hard_start_xmit routine. | |
3353 | * Used for flow control when transmit resources are unavailable. | |
3354 | */ | |
1da177e4 LT |
3355 | static inline void netif_stop_queue(struct net_device *dev) |
3356 | { | |
e8a0464c | 3357 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3358 | } |
3359 | ||
a2029240 | 3360 | void netif_tx_stop_all_queues(struct net_device *dev); |
fd2ea0a7 | 3361 | |
4d29515f | 3362 | static inline bool netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
d29f749e | 3363 | { |
73466498 | 3364 | return test_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3365 | } |
3366 | ||
bea3348e SH |
3367 | /** |
3368 | * netif_queue_stopped - test if transmit queue is flowblocked | |
3369 | * @dev: network device | |
3370 | * | |
3371 | * Test if transmit queue on device is currently unable to send. | |
3372 | */ | |
4d29515f | 3373 | static inline bool netif_queue_stopped(const struct net_device *dev) |
1da177e4 | 3374 | { |
e8a0464c | 3375 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3376 | } |
3377 | ||
4d29515f | 3378 | static inline bool netif_xmit_stopped(const struct netdev_queue *dev_queue) |
c3f26a26 | 3379 | { |
73466498 TH |
3380 | return dev_queue->state & QUEUE_STATE_ANY_XOFF; |
3381 | } | |
3382 | ||
8e2f1a63 DB |
3383 | static inline bool |
3384 | netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue) | |
73466498 TH |
3385 | { |
3386 | return dev_queue->state & QUEUE_STATE_ANY_XOFF_OR_FROZEN; | |
3387 | } | |
3388 | ||
8e2f1a63 DB |
3389 | static inline bool |
3390 | netif_xmit_frozen_or_drv_stopped(const struct netdev_queue *dev_queue) | |
3391 | { | |
3392 | return dev_queue->state & QUEUE_STATE_DRV_XOFF_OR_FROZEN; | |
3393 | } | |
3394 | ||
f57bac3c VM |
3395 | /** |
3396 | * netdev_queue_set_dql_min_limit - set dql minimum limit | |
3397 | * @dev_queue: pointer to transmit queue | |
3398 | * @min_limit: dql minimum limit | |
3399 | * | |
3400 | * Forces xmit_more() to return true until the minimum threshold | |
3401 | * defined by @min_limit is reached (or until the tx queue is | |
3402 | * empty). Warning: to be use with care, misuse will impact the | |
3403 | * latency. | |
3404 | */ | |
3405 | static inline void netdev_queue_set_dql_min_limit(struct netdev_queue *dev_queue, | |
3406 | unsigned int min_limit) | |
3407 | { | |
3408 | #ifdef CONFIG_BQL | |
3409 | dev_queue->dql.min_limit = min_limit; | |
3410 | #endif | |
3411 | } | |
3412 | ||
53511453 ED |
3413 | /** |
3414 | * netdev_txq_bql_enqueue_prefetchw - prefetch bql data for write | |
3415 | * @dev_queue: pointer to transmit queue | |
3416 | * | |
3417 | * BQL enabled drivers might use this helper in their ndo_start_xmit(), | |
5e82b4b2 | 3418 | * to give appropriate hint to the CPU. |
53511453 ED |
3419 | */ |
3420 | static inline void netdev_txq_bql_enqueue_prefetchw(struct netdev_queue *dev_queue) | |
3421 | { | |
3422 | #ifdef CONFIG_BQL | |
3423 | prefetchw(&dev_queue->dql.num_queued); | |
3424 | #endif | |
3425 | } | |
3426 | ||
3427 | /** | |
3428 | * netdev_txq_bql_complete_prefetchw - prefetch bql data for write | |
3429 | * @dev_queue: pointer to transmit queue | |
3430 | * | |
3431 | * BQL enabled drivers might use this helper in their TX completion path, | |
5e82b4b2 | 3432 | * to give appropriate hint to the CPU. |
53511453 ED |
3433 | */ |
3434 | static inline void netdev_txq_bql_complete_prefetchw(struct netdev_queue *dev_queue) | |
3435 | { | |
3436 | #ifdef CONFIG_BQL | |
3437 | prefetchw(&dev_queue->dql.limit); | |
3438 | #endif | |
3439 | } | |
3440 | ||
977f1aa5 ED |
3441 | /** |
3442 | * netdev_tx_sent_queue - report the number of bytes queued to a given tx queue | |
3443 | * @dev_queue: network device queue | |
3444 | * @bytes: number of bytes queued to the device queue | |
3445 | * | |
3446 | * Report the number of bytes queued for sending/completion to the network | |
3447 | * device hardware queue. @bytes should be a good approximation and should | |
3448 | * exactly match netdev_completed_queue() @bytes. | |
3449 | * This is typically called once per packet, from ndo_start_xmit(). | |
3450 | */ | |
c5d67bd7 TH |
3451 | static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, |
3452 | unsigned int bytes) | |
3453 | { | |
114cf580 TH |
3454 | #ifdef CONFIG_BQL |
3455 | dql_queued(&dev_queue->dql, bytes); | |
b37c0fbe AD |
3456 | |
3457 | if (likely(dql_avail(&dev_queue->dql) >= 0)) | |
3458 | return; | |
3459 | ||
3460 | set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
3461 | ||
3462 | /* | |
3463 | * The XOFF flag must be set before checking the dql_avail below, | |
3464 | * because in netdev_tx_completed_queue we update the dql_completed | |
3465 | * before checking the XOFF flag. | |
3466 | */ | |
3467 | smp_mb(); | |
3468 | ||
3469 | /* check again in case another CPU has just made room avail */ | |
3470 | if (unlikely(dql_avail(&dev_queue->dql) >= 0)) | |
3471 | clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
114cf580 | 3472 | #endif |
c5d67bd7 TH |
3473 | } |
3474 | ||
3e59020a ED |
3475 | /* Variant of netdev_tx_sent_queue() for drivers that are aware |
3476 | * that they should not test BQL status themselves. | |
3477 | * We do want to change __QUEUE_STATE_STACK_XOFF only for the last | |
3478 | * skb of a batch. | |
3479 | * Returns true if the doorbell must be used to kick the NIC. | |
3480 | */ | |
3481 | static inline bool __netdev_tx_sent_queue(struct netdev_queue *dev_queue, | |
3482 | unsigned int bytes, | |
3483 | bool xmit_more) | |
3484 | { | |
3485 | if (xmit_more) { | |
3486 | #ifdef CONFIG_BQL | |
3487 | dql_queued(&dev_queue->dql, bytes); | |
3488 | #endif | |
3489 | return netif_tx_queue_stopped(dev_queue); | |
3490 | } | |
3491 | netdev_tx_sent_queue(dev_queue, bytes); | |
3492 | return true; | |
3493 | } | |
3494 | ||
0042d0c8 | 3495 | /** |
977f1aa5 ED |
3496 | * netdev_sent_queue - report the number of bytes queued to hardware |
3497 | * @dev: network device | |
3498 | * @bytes: number of bytes queued to the hardware device queue | |
0042d0c8 | 3499 | * |
977f1aa5 ED |
3500 | * Report the number of bytes queued for sending/completion to the network |
3501 | * device hardware queue#0. @bytes should be a good approximation and should | |
3502 | * exactly match netdev_completed_queue() @bytes. | |
3503 | * This is typically called once per packet, from ndo_start_xmit(). | |
0042d0c8 | 3504 | */ |
c5d67bd7 TH |
3505 | static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes) |
3506 | { | |
3507 | netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes); | |
3508 | } | |
3509 | ||
620344c4 HK |
3510 | static inline bool __netdev_sent_queue(struct net_device *dev, |
3511 | unsigned int bytes, | |
3512 | bool xmit_more) | |
3513 | { | |
3514 | return __netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes, | |
3515 | xmit_more); | |
3516 | } | |
3517 | ||
977f1aa5 ED |
3518 | /** |
3519 | * netdev_tx_completed_queue - report number of packets/bytes at TX completion. | |
3520 | * @dev_queue: network device queue | |
3521 | * @pkts: number of packets (currently ignored) | |
3522 | * @bytes: number of bytes dequeued from the device queue | |
3523 | * | |
3524 | * Must be called at most once per TX completion round (and not per | |
3525 | * individual packet), so that BQL can adjust its limits appropriately. | |
3526 | */ | |
c5d67bd7 | 3527 | static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue, |
95c96174 | 3528 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 | 3529 | { |
114cf580 | 3530 | #ifdef CONFIG_BQL |
b37c0fbe AD |
3531 | if (unlikely(!bytes)) |
3532 | return; | |
3533 | ||
3534 | dql_completed(&dev_queue->dql, bytes); | |
3535 | ||
3536 | /* | |
3537 | * Without the memory barrier there is a small possiblity that | |
3538 | * netdev_tx_sent_queue will miss the update and cause the queue to | |
3539 | * be stopped forever | |
3540 | */ | |
301f227f | 3541 | smp_mb(); /* NOTE: netdev_txq_completed_mb() assumes this exists */ |
b37c0fbe | 3542 | |
f3acd33d | 3543 | if (unlikely(dql_avail(&dev_queue->dql) < 0)) |
b37c0fbe AD |
3544 | return; |
3545 | ||
3546 | if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state)) | |
3547 | netif_schedule_queue(dev_queue); | |
114cf580 | 3548 | #endif |
c5d67bd7 TH |
3549 | } |
3550 | ||
0042d0c8 FF |
3551 | /** |
3552 | * netdev_completed_queue - report bytes and packets completed by device | |
3553 | * @dev: network device | |
3554 | * @pkts: actual number of packets sent over the medium | |
3555 | * @bytes: actual number of bytes sent over the medium | |
3556 | * | |
3557 | * Report the number of bytes and packets transmitted by the network device | |
3558 | * hardware queue over the physical medium, @bytes must exactly match the | |
3559 | * @bytes amount passed to netdev_sent_queue() | |
3560 | */ | |
c5d67bd7 | 3561 | static inline void netdev_completed_queue(struct net_device *dev, |
95c96174 | 3562 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 TH |
3563 | { |
3564 | netdev_tx_completed_queue(netdev_get_tx_queue(dev, 0), pkts, bytes); | |
3565 | } | |
3566 | ||
3567 | static inline void netdev_tx_reset_queue(struct netdev_queue *q) | |
3568 | { | |
114cf580 | 3569 | #ifdef CONFIG_BQL |
5c490354 | 3570 | clear_bit(__QUEUE_STATE_STACK_XOFF, &q->state); |
114cf580 TH |
3571 | dql_reset(&q->dql); |
3572 | #endif | |
c5d67bd7 TH |
3573 | } |
3574 | ||
0042d0c8 FF |
3575 | /** |
3576 | * netdev_reset_queue - reset the packets and bytes count of a network device | |
3577 | * @dev_queue: network device | |
3578 | * | |
3579 | * Reset the bytes and packet count of a network device and clear the | |
3580 | * software flow control OFF bit for this network device | |
3581 | */ | |
c5d67bd7 TH |
3582 | static inline void netdev_reset_queue(struct net_device *dev_queue) |
3583 | { | |
3584 | netdev_tx_reset_queue(netdev_get_tx_queue(dev_queue, 0)); | |
c3f26a26 DM |
3585 | } |
3586 | ||
b9507bda DB |
3587 | /** |
3588 | * netdev_cap_txqueue - check if selected tx queue exceeds device queues | |
3589 | * @dev: network device | |
3590 | * @queue_index: given tx queue index | |
3591 | * | |
3592 | * Returns 0 if given tx queue index >= number of device tx queues, | |
3593 | * otherwise returns the originally passed tx queue index. | |
3594 | */ | |
3595 | static inline u16 netdev_cap_txqueue(struct net_device *dev, u16 queue_index) | |
3596 | { | |
3597 | if (unlikely(queue_index >= dev->real_num_tx_queues)) { | |
3598 | net_warn_ratelimited("%s selects TX queue %d, but real number of TX queues is %d\n", | |
3599 | dev->name, queue_index, | |
3600 | dev->real_num_tx_queues); | |
3601 | return 0; | |
3602 | } | |
3603 | ||
3604 | return queue_index; | |
3605 | } | |
3606 | ||
bea3348e SH |
3607 | /** |
3608 | * netif_running - test if up | |
3609 | * @dev: network device | |
3610 | * | |
3611 | * Test if the device has been brought up. | |
3612 | */ | |
4d29515f | 3613 | static inline bool netif_running(const struct net_device *dev) |
1da177e4 LT |
3614 | { |
3615 | return test_bit(__LINK_STATE_START, &dev->state); | |
3616 | } | |
3617 | ||
f25f4e44 | 3618 | /* |
5e82b4b2 | 3619 | * Routines to manage the subqueues on a device. We only need start, |
f25f4e44 PWJ |
3620 | * stop, and a check if it's stopped. All other device management is |
3621 | * done at the overall netdevice level. | |
3622 | * Also test the device if we're multiqueue. | |
3623 | */ | |
bea3348e SH |
3624 | |
3625 | /** | |
3626 | * netif_start_subqueue - allow sending packets on subqueue | |
3627 | * @dev: network device | |
3628 | * @queue_index: sub queue index | |
3629 | * | |
3630 | * Start individual transmit queue of a device with multiple transmit queues. | |
3631 | */ | |
f25f4e44 PWJ |
3632 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
3633 | { | |
fd2ea0a7 | 3634 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3635 | |
3636 | netif_tx_start_queue(txq); | |
f25f4e44 PWJ |
3637 | } |
3638 | ||
bea3348e SH |
3639 | /** |
3640 | * netif_stop_subqueue - stop sending packets on subqueue | |
3641 | * @dev: network device | |
3642 | * @queue_index: sub queue index | |
3643 | * | |
3644 | * Stop individual transmit queue of a device with multiple transmit queues. | |
3645 | */ | |
f25f4e44 PWJ |
3646 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
3647 | { | |
fd2ea0a7 | 3648 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f | 3649 | netif_tx_stop_queue(txq); |
f25f4e44 PWJ |
3650 | } |
3651 | ||
bea3348e | 3652 | /** |
270f3385 | 3653 | * __netif_subqueue_stopped - test status of subqueue |
bea3348e SH |
3654 | * @dev: network device |
3655 | * @queue_index: sub queue index | |
3656 | * | |
3657 | * Check individual transmit queue of a device with multiple transmit queues. | |
3658 | */ | |
4d29515f DM |
3659 | static inline bool __netif_subqueue_stopped(const struct net_device *dev, |
3660 | u16 queue_index) | |
f25f4e44 | 3661 | { |
fd2ea0a7 | 3662 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3663 | |
3664 | return netif_tx_queue_stopped(txq); | |
f25f4e44 PWJ |
3665 | } |
3666 | ||
270f3385 MCC |
3667 | /** |
3668 | * netif_subqueue_stopped - test status of subqueue | |
3669 | * @dev: network device | |
3670 | * @skb: sub queue buffer pointer | |
3671 | * | |
3672 | * Check individual transmit queue of a device with multiple transmit queues. | |
3673 | */ | |
4d29515f DM |
3674 | static inline bool netif_subqueue_stopped(const struct net_device *dev, |
3675 | struct sk_buff *skb) | |
668f895a PE |
3676 | { |
3677 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
3678 | } | |
bea3348e | 3679 | |
738b35cc FF |
3680 | /** |
3681 | * netif_wake_subqueue - allow sending packets on subqueue | |
3682 | * @dev: network device | |
3683 | * @queue_index: sub queue index | |
3684 | * | |
3685 | * Resume individual transmit queue of a device with multiple transmit queues. | |
3686 | */ | |
3687 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) | |
3688 | { | |
3689 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); | |
3690 | ||
3691 | netif_tx_wake_queue(txq); | |
3692 | } | |
f25f4e44 | 3693 | |
537c00de | 3694 | #ifdef CONFIG_XPS |
53af53ae | 3695 | int netif_set_xps_queue(struct net_device *dev, const struct cpumask *mask, |
f629d208 | 3696 | u16 index); |
80d19669 | 3697 | int __netif_set_xps_queue(struct net_device *dev, const unsigned long *mask, |
044ab86d | 3698 | u16 index, enum xps_map_type type); |
80d19669 AN |
3699 | |
3700 | /** | |
3701 | * netif_attr_test_mask - Test a CPU or Rx queue set in a mask | |
3702 | * @j: CPU/Rx queue index | |
3703 | * @mask: bitmask of all cpus/rx queues | |
3704 | * @nr_bits: number of bits in the bitmask | |
3705 | * | |
3706 | * Test if a CPU or Rx queue index is set in a mask of all CPU/Rx queues. | |
3707 | */ | |
3708 | static inline bool netif_attr_test_mask(unsigned long j, | |
3709 | const unsigned long *mask, | |
3710 | unsigned int nr_bits) | |
3711 | { | |
3712 | cpu_max_bits_warn(j, nr_bits); | |
3713 | return test_bit(j, mask); | |
3714 | } | |
3715 | ||
3716 | /** | |
3717 | * netif_attr_test_online - Test for online CPU/Rx queue | |
3718 | * @j: CPU/Rx queue index | |
3719 | * @online_mask: bitmask for CPUs/Rx queues that are online | |
3720 | * @nr_bits: number of bits in the bitmask | |
3721 | * | |
3722 | * Returns true if a CPU/Rx queue is online. | |
3723 | */ | |
3724 | static inline bool netif_attr_test_online(unsigned long j, | |
3725 | const unsigned long *online_mask, | |
3726 | unsigned int nr_bits) | |
3727 | { | |
3728 | cpu_max_bits_warn(j, nr_bits); | |
3729 | ||
3730 | if (online_mask) | |
3731 | return test_bit(j, online_mask); | |
3732 | ||
3733 | return (j < nr_bits); | |
3734 | } | |
3735 | ||
3736 | /** | |
3737 | * netif_attrmask_next - get the next CPU/Rx queue in a cpu/Rx queues mask | |
3738 | * @n: CPU/Rx queue index | |
3739 | * @srcp: the cpumask/Rx queue mask pointer | |
3740 | * @nr_bits: number of bits in the bitmask | |
3741 | * | |
3742 | * Returns >= nr_bits if no further CPUs/Rx queues set. | |
3743 | */ | |
3744 | static inline unsigned int netif_attrmask_next(int n, const unsigned long *srcp, | |
3745 | unsigned int nr_bits) | |
3746 | { | |
fc8695eb JK |
3747 | /* -1 is a legal arg here. */ |
3748 | if (n != -1) | |
3749 | cpu_max_bits_warn(n, nr_bits); | |
80d19669 AN |
3750 | |
3751 | if (srcp) | |
3752 | return find_next_bit(srcp, nr_bits, n + 1); | |
3753 | ||
3754 | return n + 1; | |
3755 | } | |
3756 | ||
3757 | /** | |
a1fa83bd | 3758 | * netif_attrmask_next_and - get the next CPU/Rx queue in \*src1p & \*src2p |
80d19669 AN |
3759 | * @n: CPU/Rx queue index |
3760 | * @src1p: the first CPUs/Rx queues mask pointer | |
3761 | * @src2p: the second CPUs/Rx queues mask pointer | |
3762 | * @nr_bits: number of bits in the bitmask | |
3763 | * | |
3764 | * Returns >= nr_bits if no further CPUs/Rx queues set in both. | |
3765 | */ | |
3766 | static inline int netif_attrmask_next_and(int n, const unsigned long *src1p, | |
3767 | const unsigned long *src2p, | |
3768 | unsigned int nr_bits) | |
3769 | { | |
fc8695eb JK |
3770 | /* -1 is a legal arg here. */ |
3771 | if (n != -1) | |
3772 | cpu_max_bits_warn(n, nr_bits); | |
80d19669 AN |
3773 | |
3774 | if (src1p && src2p) | |
3775 | return find_next_and_bit(src1p, src2p, nr_bits, n + 1); | |
3776 | else if (src1p) | |
3777 | return find_next_bit(src1p, nr_bits, n + 1); | |
3778 | else if (src2p) | |
3779 | return find_next_bit(src2p, nr_bits, n + 1); | |
3780 | ||
3781 | return n + 1; | |
3782 | } | |
537c00de AD |
3783 | #else |
3784 | static inline int netif_set_xps_queue(struct net_device *dev, | |
3573540c | 3785 | const struct cpumask *mask, |
537c00de AD |
3786 | u16 index) |
3787 | { | |
3788 | return 0; | |
3789 | } | |
c9fbb2d2 KK |
3790 | |
3791 | static inline int __netif_set_xps_queue(struct net_device *dev, | |
3792 | const unsigned long *mask, | |
044ab86d | 3793 | u16 index, enum xps_map_type type) |
c9fbb2d2 KK |
3794 | { |
3795 | return 0; | |
3796 | } | |
537c00de AD |
3797 | #endif |
3798 | ||
bea3348e SH |
3799 | /** |
3800 | * netif_is_multiqueue - test if device has multiple transmit queues | |
3801 | * @dev: network device | |
3802 | * | |
3803 | * Check if device has multiple transmit queues | |
bea3348e | 3804 | */ |
4d29515f | 3805 | static inline bool netif_is_multiqueue(const struct net_device *dev) |
f25f4e44 | 3806 | { |
a02cec21 | 3807 | return dev->num_tx_queues > 1; |
f25f4e44 | 3808 | } |
1da177e4 | 3809 | |
f629d208 | 3810 | int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq); |
f0796d5c | 3811 | |
a953be53 | 3812 | #ifdef CONFIG_SYSFS |
f629d208 | 3813 | int netif_set_real_num_rx_queues(struct net_device *dev, unsigned int rxq); |
62fe0b40 BH |
3814 | #else |
3815 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, | |
c29c2ebd | 3816 | unsigned int rxqs) |
62fe0b40 | 3817 | { |
c29c2ebd | 3818 | dev->real_num_rx_queues = rxqs; |
62fe0b40 BH |
3819 | return 0; |
3820 | } | |
3821 | #endif | |
271e5b7d JK |
3822 | int netif_set_real_num_queues(struct net_device *dev, |
3823 | unsigned int txq, unsigned int rxq); | |
62fe0b40 | 3824 | |
f629d208 | 3825 | int netif_get_num_default_rss_queues(void); |
16917b87 | 3826 | |
40bbae58 ED |
3827 | void dev_kfree_skb_irq_reason(struct sk_buff *skb, enum skb_drop_reason reason); |
3828 | void dev_kfree_skb_any_reason(struct sk_buff *skb, enum skb_drop_reason reason); | |
1da177e4 | 3829 | |
e6247027 ED |
3830 | /* |
3831 | * It is not allowed to call kfree_skb() or consume_skb() from hardware | |
3832 | * interrupt context or with hardware interrupts being disabled. | |
afa79d08 | 3833 | * (in_hardirq() || irqs_disabled()) |
e6247027 ED |
3834 | * |
3835 | * We provide four helpers that can be used in following contexts : | |
3836 | * | |
3837 | * dev_kfree_skb_irq(skb) when caller drops a packet from irq context, | |
3838 | * replacing kfree_skb(skb) | |
3839 | * | |
3840 | * dev_consume_skb_irq(skb) when caller consumes a packet from irq context. | |
3841 | * Typically used in place of consume_skb(skb) in TX completion path | |
3842 | * | |
3843 | * dev_kfree_skb_any(skb) when caller doesn't know its current irq context, | |
3844 | * replacing kfree_skb(skb) | |
3845 | * | |
3846 | * dev_consume_skb_any(skb) when caller doesn't know its current irq context, | |
3847 | * and consumed a packet. Used in place of consume_skb(skb) | |
1da177e4 | 3848 | */ |
e6247027 ED |
3849 | static inline void dev_kfree_skb_irq(struct sk_buff *skb) |
3850 | { | |
40bbae58 | 3851 | dev_kfree_skb_irq_reason(skb, SKB_DROP_REASON_NOT_SPECIFIED); |
e6247027 ED |
3852 | } |
3853 | ||
3854 | static inline void dev_consume_skb_irq(struct sk_buff *skb) | |
3855 | { | |
40bbae58 | 3856 | dev_kfree_skb_irq_reason(skb, SKB_CONSUMED); |
e6247027 ED |
3857 | } |
3858 | ||
3859 | static inline void dev_kfree_skb_any(struct sk_buff *skb) | |
3860 | { | |
40bbae58 | 3861 | dev_kfree_skb_any_reason(skb, SKB_DROP_REASON_NOT_SPECIFIED); |
e6247027 ED |
3862 | } |
3863 | ||
3864 | static inline void dev_consume_skb_any(struct sk_buff *skb) | |
3865 | { | |
40bbae58 | 3866 | dev_kfree_skb_any_reason(skb, SKB_CONSUMED); |
e6247027 | 3867 | } |
1da177e4 | 3868 | |
fe21cb91 KKD |
3869 | u32 bpf_prog_run_generic_xdp(struct sk_buff *skb, struct xdp_buff *xdp, |
3870 | struct bpf_prog *xdp_prog); | |
7c497478 JW |
3871 | void generic_xdp_tx(struct sk_buff *skb, struct bpf_prog *xdp_prog); |
3872 | int do_xdp_generic(struct bpf_prog *xdp_prog, struct sk_buff *skb); | |
f629d208 | 3873 | int netif_rx(struct sk_buff *skb); |
baebdf48 SAS |
3874 | int __netif_rx(struct sk_buff *skb); |
3875 | ||
04eb4489 | 3876 | int netif_receive_skb(struct sk_buff *skb); |
1c601d82 | 3877 | int netif_receive_skb_core(struct sk_buff *skb); |
587652bb | 3878 | void netif_receive_skb_list_internal(struct list_head *head); |
f6ad8c1b | 3879 | void netif_receive_skb_list(struct list_head *head); |
f629d208 JP |
3880 | gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb); |
3881 | void napi_gro_flush(struct napi_struct *napi, bool flush_old); | |
3882 | struct sk_buff *napi_get_frags(struct napi_struct *napi); | |
dbae2b06 | 3883 | void napi_get_frags_check(struct napi_struct *napi); |
f629d208 | 3884 | gro_result_t napi_gro_frags(struct napi_struct *napi); |
bf5a755f JC |
3885 | struct packet_offload *gro_find_receive_by_type(__be16 type); |
3886 | struct packet_offload *gro_find_complete_by_type(__be16 type); | |
76620aaf HX |
3887 | |
3888 | static inline void napi_free_frags(struct napi_struct *napi) | |
3889 | { | |
3890 | kfree_skb(napi->skb); | |
3891 | napi->skb = NULL; | |
3892 | } | |
3893 | ||
24b27fc4 | 3894 | bool netdev_is_rx_handler_busy(struct net_device *dev); |
f629d208 JP |
3895 | int netdev_rx_handler_register(struct net_device *dev, |
3896 | rx_handler_func_t *rx_handler, | |
3897 | void *rx_handler_data); | |
3898 | void netdev_rx_handler_unregister(struct net_device *dev); | |
3899 | ||
3900 | bool dev_valid_name(const char *name); | |
d0efb162 PC |
3901 | static inline bool is_socket_ioctl_cmd(unsigned int cmd) |
3902 | { | |
3903 | return _IOC_TYPE(cmd) == SOCK_IOC_TYPE; | |
3904 | } | |
29c49648 AB |
3905 | int get_user_ifreq(struct ifreq *ifr, void __user **ifrdata, void __user *arg); |
3906 | int put_user_ifreq(struct ifreq *ifr, void __user *arg); | |
44c02a2c | 3907 | int dev_ioctl(struct net *net, unsigned int cmd, struct ifreq *ifr, |
a554bf96 | 3908 | void __user *data, bool *need_copyout); |
876f0bf9 | 3909 | int dev_ifconf(struct net *net, struct ifconf __user *ifc); |
e47d01fe MG |
3910 | int generic_hwtstamp_get_lower(struct net_device *dev, |
3911 | struct kernel_hwtstamp_config *kernel_cfg); | |
3912 | int generic_hwtstamp_set_lower(struct net_device *dev, | |
3913 | struct kernel_hwtstamp_config *kernel_cfg, | |
3914 | struct netlink_ext_ack *extack); | |
a554bf96 | 3915 | int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *userdata); |
f629d208 | 3916 | unsigned int dev_get_flags(const struct net_device *); |
6d040321 PM |
3917 | int __dev_change_flags(struct net_device *dev, unsigned int flags, |
3918 | struct netlink_ext_ack *extack); | |
567c5e13 PM |
3919 | int dev_change_flags(struct net_device *dev, unsigned int flags, |
3920 | struct netlink_ext_ack *extack); | |
f629d208 | 3921 | int dev_set_alias(struct net_device *, const char *, size_t); |
6c557001 | 3922 | int dev_get_alias(const struct net_device *, char *, size_t); |
0854fa82 AV |
3923 | int __dev_change_net_namespace(struct net_device *dev, struct net *net, |
3924 | const char *pat, int new_ifindex); | |
3925 | static inline | |
eeb85a14 | 3926 | int dev_change_net_namespace(struct net_device *dev, struct net *net, |
0854fa82 AV |
3927 | const char *pat) |
3928 | { | |
3929 | return __dev_change_net_namespace(dev, net, pat, 0); | |
3930 | } | |
f51048c3 | 3931 | int __dev_set_mtu(struct net_device *, int); |
f629d208 | 3932 | int dev_set_mtu(struct net_device *, int); |
d59cdf94 PM |
3933 | int dev_pre_changeaddr_notify(struct net_device *dev, const char *addr, |
3934 | struct netlink_ext_ack *extack); | |
3a37a963 PM |
3935 | int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa, |
3936 | struct netlink_ext_ack *extack); | |
3b23a32a CW |
3937 | int dev_set_mac_address_user(struct net_device *dev, struct sockaddr *sa, |
3938 | struct netlink_ext_ack *extack); | |
3939 | int dev_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name); | |
d6abc596 FF |
3940 | int dev_get_port_parent_id(struct net_device *dev, |
3941 | struct netdev_phys_item_id *ppid, bool recurse); | |
3942 | bool netdev_port_same_parent_id(struct net_device *a, struct net_device *b); | |
f53c7239 | 3943 | struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev, bool *again); |
ce93718f DM |
3944 | struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, |
3945 | struct netdev_queue *txq, int *ret); | |
d67b9cd2 | 3946 | |
aa8d3a71 | 3947 | int bpf_xdp_link_attach(const union bpf_attr *attr, struct bpf_prog *prog); |
879af96f | 3948 | u8 dev_xdp_prog_count(struct net_device *dev); |
7f0a8382 | 3949 | u32 dev_xdp_prog_id(struct net_device *dev, enum bpf_xdp_mode mode); |
aa8d3a71 | 3950 | |
a0265d28 | 3951 | int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
f629d208 | 3952 | int dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
5f7d5728 | 3953 | int dev_forward_skb_nomtu(struct net_device *dev, struct sk_buff *skb); |
f4b05d27 NA |
3954 | bool is_skb_forwardable(const struct net_device *dev, |
3955 | const struct sk_buff *skb); | |
1da177e4 | 3956 | |
5f7d5728 JDB |
3957 | static __always_inline bool __is_skb_forwardable(const struct net_device *dev, |
3958 | const struct sk_buff *skb, | |
3959 | const bool check_mtu) | |
3960 | { | |
3961 | const u32 vlan_hdr_len = 4; /* VLAN_HLEN */ | |
3962 | unsigned int len; | |
3963 | ||
3964 | if (!(dev->flags & IFF_UP)) | |
3965 | return false; | |
3966 | ||
3967 | if (!check_mtu) | |
3968 | return true; | |
3969 | ||
3970 | len = dev->mtu + dev->hard_header_len + vlan_hdr_len; | |
3971 | if (skb->len <= len) | |
3972 | return true; | |
3973 | ||
3974 | /* if TSO is enabled, we don't care about the length as the packet | |
3975 | * could be forwarded without being segmented before | |
3976 | */ | |
3977 | if (skb_is_gso(skb)) | |
3978 | return true; | |
3979 | ||
3980 | return false; | |
3981 | } | |
3982 | ||
6510ea97 | 3983 | struct net_device_core_stats __percpu *netdev_core_stats_alloc(struct net_device *dev); |
625788b5 | 3984 | |
6510ea97 | 3985 | static inline struct net_device_core_stats __percpu *dev_core_stats(struct net_device *dev) |
625788b5 ED |
3986 | { |
3987 | /* This READ_ONCE() pairs with the write in netdev_core_stats_alloc() */ | |
3988 | struct net_device_core_stats __percpu *p = READ_ONCE(dev->core_stats); | |
3989 | ||
3990 | if (likely(p)) | |
6510ea97 | 3991 | return p; |
625788b5 ED |
3992 | |
3993 | return netdev_core_stats_alloc(dev); | |
3994 | } | |
3995 | ||
3996 | #define DEV_CORE_STATS_INC(FIELD) \ | |
3997 | static inline void dev_core_stats_##FIELD##_inc(struct net_device *dev) \ | |
3998 | { \ | |
6510ea97 | 3999 | struct net_device_core_stats __percpu *p; \ |
fc93db15 | 4000 | \ |
fc93db15 | 4001 | p = dev_core_stats(dev); \ |
625788b5 | 4002 | if (p) \ |
6510ea97 | 4003 | this_cpu_inc(p->FIELD); \ |
625788b5 ED |
4004 | } |
4005 | DEV_CORE_STATS_INC(rx_dropped) | |
4006 | DEV_CORE_STATS_INC(tx_dropped) | |
4007 | DEV_CORE_STATS_INC(rx_nohandler) | |
794c24e9 | 4008 | DEV_CORE_STATS_INC(rx_otherhost_dropped) |
625788b5 | 4009 | |
4e3264d2 | 4010 | static __always_inline int ____dev_forward_skb(struct net_device *dev, |
5f7d5728 JDB |
4011 | struct sk_buff *skb, |
4012 | const bool check_mtu) | |
4e3264d2 MKL |
4013 | { |
4014 | if (skb_orphan_frags(skb, GFP_ATOMIC) || | |
5f7d5728 | 4015 | unlikely(!__is_skb_forwardable(dev, skb, check_mtu))) { |
625788b5 | 4016 | dev_core_stats_rx_dropped_inc(dev); |
4e3264d2 MKL |
4017 | kfree_skb(skb); |
4018 | return NET_RX_DROP; | |
4019 | } | |
4020 | ||
ff70202b | 4021 | skb_scrub_packet(skb, !net_eq(dev_net(dev), dev_net(skb->dev))); |
4e3264d2 MKL |
4022 | skb->priority = 0; |
4023 | return 0; | |
4024 | } | |
4025 | ||
9f9a742d | 4026 | bool dev_nit_active(struct net_device *dev); |
74b20582 DA |
4027 | void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev); |
4028 | ||
4c6c11ea | 4029 | static inline void __dev_put(struct net_device *dev) |
1da177e4 | 4030 | { |
b37a4668 | 4031 | if (dev) { |
919067cc | 4032 | #ifdef CONFIG_PCPU_DEV_REFCNT |
b37a4668 | 4033 | this_cpu_dec(*dev->pcpu_refcnt); |
919067cc | 4034 | #else |
b37a4668 | 4035 | refcount_dec(&dev->dev_refcnt); |
919067cc | 4036 | #endif |
b37a4668 | 4037 | } |
1da177e4 LT |
4038 | } |
4039 | ||
4c6c11ea | 4040 | static inline void __dev_hold(struct net_device *dev) |
15333061 | 4041 | { |
b37a4668 | 4042 | if (dev) { |
919067cc | 4043 | #ifdef CONFIG_PCPU_DEV_REFCNT |
b37a4668 | 4044 | this_cpu_inc(*dev->pcpu_refcnt); |
919067cc | 4045 | #else |
b37a4668 | 4046 | refcount_inc(&dev->dev_refcnt); |
919067cc | 4047 | #endif |
b37a4668 | 4048 | } |
15333061 | 4049 | } |
1da177e4 | 4050 | |
4c6c11ea ED |
4051 | static inline void __netdev_tracker_alloc(struct net_device *dev, |
4052 | netdevice_tracker *tracker, | |
4053 | gfp_t gfp) | |
4054 | { | |
4055 | #ifdef CONFIG_NET_DEV_REFCNT_TRACKER | |
4056 | ref_tracker_alloc(&dev->refcnt_tracker, tracker, gfp); | |
4057 | #endif | |
4058 | } | |
4059 | ||
4060 | /* netdev_tracker_alloc() can upgrade a prior untracked reference | |
4061 | * taken by dev_get_by_name()/dev_get_by_index() to a tracked one. | |
4062 | */ | |
4d92b95f ED |
4063 | static inline void netdev_tracker_alloc(struct net_device *dev, |
4064 | netdevice_tracker *tracker, gfp_t gfp) | |
4065 | { | |
4066 | #ifdef CONFIG_NET_DEV_REFCNT_TRACKER | |
4c6c11ea ED |
4067 | refcount_dec(&dev->refcnt_tracker.no_tracker); |
4068 | __netdev_tracker_alloc(dev, tracker, gfp); | |
4d92b95f ED |
4069 | #endif |
4070 | } | |
4071 | ||
4072 | static inline void netdev_tracker_free(struct net_device *dev, | |
4073 | netdevice_tracker *tracker) | |
4074 | { | |
4075 | #ifdef CONFIG_NET_DEV_REFCNT_TRACKER | |
4076 | ref_tracker_free(&dev->refcnt_tracker, tracker); | |
4077 | #endif | |
4078 | } | |
4079 | ||
d62607c3 JK |
4080 | static inline void netdev_hold(struct net_device *dev, |
4081 | netdevice_tracker *tracker, gfp_t gfp) | |
4d92b95f ED |
4082 | { |
4083 | if (dev) { | |
4c6c11ea ED |
4084 | __dev_hold(dev); |
4085 | __netdev_tracker_alloc(dev, tracker, gfp); | |
4d92b95f ED |
4086 | } |
4087 | } | |
4088 | ||
d62607c3 JK |
4089 | static inline void netdev_put(struct net_device *dev, |
4090 | netdevice_tracker *tracker) | |
4d92b95f ED |
4091 | { |
4092 | if (dev) { | |
4093 | netdev_tracker_free(dev, tracker); | |
4c6c11ea | 4094 | __dev_put(dev); |
4d92b95f ED |
4095 | } |
4096 | } | |
4097 | ||
4c6c11ea ED |
4098 | /** |
4099 | * dev_hold - get reference to device | |
4100 | * @dev: network device | |
4101 | * | |
4102 | * Hold reference to device to keep it from being freed. | |
d62607c3 | 4103 | * Try using netdev_hold() instead. |
4c6c11ea ED |
4104 | */ |
4105 | static inline void dev_hold(struct net_device *dev) | |
4106 | { | |
d62607c3 | 4107 | netdev_hold(dev, NULL, GFP_ATOMIC); |
4c6c11ea ED |
4108 | } |
4109 | ||
4110 | /** | |
4111 | * dev_put - release reference to device | |
4112 | * @dev: network device | |
4113 | * | |
4114 | * Release reference to device to allow it to be freed. | |
d62607c3 | 4115 | * Try using netdev_put() instead. |
4c6c11ea ED |
4116 | */ |
4117 | static inline void dev_put(struct net_device *dev) | |
4118 | { | |
d62607c3 | 4119 | netdev_put(dev, NULL); |
4c6c11ea ED |
4120 | } |
4121 | ||
d62607c3 JK |
4122 | static inline void netdev_ref_replace(struct net_device *odev, |
4123 | struct net_device *ndev, | |
4124 | netdevice_tracker *tracker, | |
4125 | gfp_t gfp) | |
9038c320 | 4126 | { |
9038c320 | 4127 | if (odev) |
9280ac2e ED |
4128 | netdev_tracker_free(odev, tracker); |
4129 | ||
4c6c11ea ED |
4130 | __dev_hold(ndev); |
4131 | __dev_put(odev); | |
9280ac2e | 4132 | |
9038c320 | 4133 | if (ndev) |
4c6c11ea | 4134 | __netdev_tracker_alloc(ndev, tracker, gfp); |
9038c320 ED |
4135 | } |
4136 | ||
1da177e4 LT |
4137 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on |
4138 | * and _off may be called from IRQ context, but it is caller | |
4139 | * who is responsible for serialization of these calls. | |
b00055aa SR |
4140 | * |
4141 | * The name carrier is inappropriate, these functions should really be | |
4142 | * called netif_lowerlayer_*() because they represent the state of any | |
4143 | * kind of lower layer not just hardware media. | |
1da177e4 | 4144 | */ |
f629d208 | 4145 | void linkwatch_fire_event(struct net_device *dev); |
1da177e4 | 4146 | |
bea3348e SH |
4147 | /** |
4148 | * netif_carrier_ok - test if carrier present | |
4149 | * @dev: network device | |
4150 | * | |
4151 | * Check if carrier is present on device | |
4152 | */ | |
4d29515f | 4153 | static inline bool netif_carrier_ok(const struct net_device *dev) |
1da177e4 LT |
4154 | { |
4155 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
4156 | } | |
4157 | ||
f629d208 | 4158 | unsigned long dev_trans_start(struct net_device *dev); |
9d21493b | 4159 | |
f629d208 | 4160 | void __netdev_watchdog_up(struct net_device *dev); |
1da177e4 | 4161 | |
f629d208 | 4162 | void netif_carrier_on(struct net_device *dev); |
f629d208 | 4163 | void netif_carrier_off(struct net_device *dev); |
490dceca | 4164 | void netif_carrier_event(struct net_device *dev); |
1da177e4 | 4165 | |
bea3348e SH |
4166 | /** |
4167 | * netif_dormant_on - mark device as dormant. | |
4168 | * @dev: network device | |
4169 | * | |
4170 | * Mark device as dormant (as per RFC2863). | |
4171 | * | |
4172 | * The dormant state indicates that the relevant interface is not | |
4173 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
4174 | * in a "pending" state, waiting for some external event. For "on- | |
4175 | * demand" interfaces, this new state identifies the situation where the | |
4176 | * interface is waiting for events to place it in the up state. | |
bea3348e | 4177 | */ |
b00055aa SR |
4178 | static inline void netif_dormant_on(struct net_device *dev) |
4179 | { | |
4180 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
4181 | linkwatch_fire_event(dev); | |
4182 | } | |
4183 | ||
bea3348e SH |
4184 | /** |
4185 | * netif_dormant_off - set device as not dormant. | |
4186 | * @dev: network device | |
4187 | * | |
4188 | * Device is not in dormant state. | |
4189 | */ | |
b00055aa SR |
4190 | static inline void netif_dormant_off(struct net_device *dev) |
4191 | { | |
4192 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
4193 | linkwatch_fire_event(dev); | |
4194 | } | |
4195 | ||
bea3348e | 4196 | /** |
8ecbc40a | 4197 | * netif_dormant - test if device is dormant |
bea3348e SH |
4198 | * @dev: network device |
4199 | * | |
8ecbc40a | 4200 | * Check if device is dormant. |
bea3348e | 4201 | */ |
4d29515f | 4202 | static inline bool netif_dormant(const struct net_device *dev) |
b00055aa SR |
4203 | { |
4204 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
4205 | } | |
4206 | ||
4207 | ||
eec517cd AL |
4208 | /** |
4209 | * netif_testing_on - mark device as under test. | |
4210 | * @dev: network device | |
4211 | * | |
4212 | * Mark device as under test (as per RFC2863). | |
4213 | * | |
4214 | * The testing state indicates that some test(s) must be performed on | |
4215 | * the interface. After completion, of the test, the interface state | |
4216 | * will change to up, dormant, or down, as appropriate. | |
4217 | */ | |
4218 | static inline void netif_testing_on(struct net_device *dev) | |
4219 | { | |
4220 | if (!test_and_set_bit(__LINK_STATE_TESTING, &dev->state)) | |
4221 | linkwatch_fire_event(dev); | |
4222 | } | |
4223 | ||
4224 | /** | |
4225 | * netif_testing_off - set device as not under test. | |
4226 | * @dev: network device | |
4227 | * | |
4228 | * Device is not in testing state. | |
4229 | */ | |
4230 | static inline void netif_testing_off(struct net_device *dev) | |
4231 | { | |
4232 | if (test_and_clear_bit(__LINK_STATE_TESTING, &dev->state)) | |
4233 | linkwatch_fire_event(dev); | |
4234 | } | |
4235 | ||
4236 | /** | |
4237 | * netif_testing - test if device is under test | |
4238 | * @dev: network device | |
4239 | * | |
4240 | * Check if device is under test | |
4241 | */ | |
4242 | static inline bool netif_testing(const struct net_device *dev) | |
4243 | { | |
4244 | return test_bit(__LINK_STATE_TESTING, &dev->state); | |
4245 | } | |
4246 | ||
4247 | ||
bea3348e SH |
4248 | /** |
4249 | * netif_oper_up - test if device is operational | |
4250 | * @dev: network device | |
4251 | * | |
4252 | * Check if carrier is operational | |
4253 | */ | |
4d29515f | 4254 | static inline bool netif_oper_up(const struct net_device *dev) |
d94d9fee | 4255 | { |
b00055aa SR |
4256 | return (dev->operstate == IF_OPER_UP || |
4257 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
4258 | } | |
4259 | ||
bea3348e SH |
4260 | /** |
4261 | * netif_device_present - is device available or removed | |
4262 | * @dev: network device | |
4263 | * | |
4264 | * Check if device has not been removed from system. | |
4265 | */ | |
7a126a43 | 4266 | static inline bool netif_device_present(const struct net_device *dev) |
1da177e4 LT |
4267 | { |
4268 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
4269 | } | |
4270 | ||
f629d208 | 4271 | void netif_device_detach(struct net_device *dev); |
1da177e4 | 4272 | |
f629d208 | 4273 | void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
4274 | |
4275 | /* | |
4276 | * Network interface message level settings | |
4277 | */ | |
1da177e4 LT |
4278 | |
4279 | enum { | |
6a94b8cc MK |
4280 | NETIF_MSG_DRV_BIT, |
4281 | NETIF_MSG_PROBE_BIT, | |
4282 | NETIF_MSG_LINK_BIT, | |
4283 | NETIF_MSG_TIMER_BIT, | |
4284 | NETIF_MSG_IFDOWN_BIT, | |
4285 | NETIF_MSG_IFUP_BIT, | |
4286 | NETIF_MSG_RX_ERR_BIT, | |
4287 | NETIF_MSG_TX_ERR_BIT, | |
4288 | NETIF_MSG_TX_QUEUED_BIT, | |
4289 | NETIF_MSG_INTR_BIT, | |
4290 | NETIF_MSG_TX_DONE_BIT, | |
4291 | NETIF_MSG_RX_STATUS_BIT, | |
4292 | NETIF_MSG_PKTDATA_BIT, | |
4293 | NETIF_MSG_HW_BIT, | |
4294 | NETIF_MSG_WOL_BIT, | |
4295 | ||
4296 | /* When you add a new bit above, update netif_msg_class_names array | |
4297 | * in net/ethtool/common.c | |
4298 | */ | |
4299 | NETIF_MSG_CLASS_COUNT, | |
1da177e4 | 4300 | }; |
6a94b8cc MK |
4301 | /* Both ethtool_ops interface and internal driver implementation use u32 */ |
4302 | static_assert(NETIF_MSG_CLASS_COUNT <= 32); | |
4303 | ||
4304 | #define __NETIF_MSG_BIT(bit) ((u32)1 << (bit)) | |
4305 | #define __NETIF_MSG(name) __NETIF_MSG_BIT(NETIF_MSG_ ## name ## _BIT) | |
4306 | ||
4307 | #define NETIF_MSG_DRV __NETIF_MSG(DRV) | |
4308 | #define NETIF_MSG_PROBE __NETIF_MSG(PROBE) | |
4309 | #define NETIF_MSG_LINK __NETIF_MSG(LINK) | |
4310 | #define NETIF_MSG_TIMER __NETIF_MSG(TIMER) | |
4311 | #define NETIF_MSG_IFDOWN __NETIF_MSG(IFDOWN) | |
4312 | #define NETIF_MSG_IFUP __NETIF_MSG(IFUP) | |
4313 | #define NETIF_MSG_RX_ERR __NETIF_MSG(RX_ERR) | |
4314 | #define NETIF_MSG_TX_ERR __NETIF_MSG(TX_ERR) | |
4315 | #define NETIF_MSG_TX_QUEUED __NETIF_MSG(TX_QUEUED) | |
4316 | #define NETIF_MSG_INTR __NETIF_MSG(INTR) | |
4317 | #define NETIF_MSG_TX_DONE __NETIF_MSG(TX_DONE) | |
4318 | #define NETIF_MSG_RX_STATUS __NETIF_MSG(RX_STATUS) | |
4319 | #define NETIF_MSG_PKTDATA __NETIF_MSG(PKTDATA) | |
4320 | #define NETIF_MSG_HW __NETIF_MSG(HW) | |
4321 | #define NETIF_MSG_WOL __NETIF_MSG(WOL) | |
1da177e4 LT |
4322 | |
4323 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
4324 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
4325 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
4326 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
4327 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
4328 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
4329 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
4330 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
4331 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
4332 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
4333 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
4334 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
4335 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
4336 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
4337 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
4338 | ||
4339 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
4340 | { | |
4341 | /* use default */ | |
4342 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
4343 | return default_msg_enable_bits; | |
4344 | if (debug_value == 0) /* no output */ | |
4345 | return 0; | |
4346 | /* set low N bits */ | |
f4d7b3e2 | 4347 | return (1U << debug_value) - 1; |
1da177e4 LT |
4348 | } |
4349 | ||
c773e847 | 4350 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 4351 | { |
c773e847 | 4352 | spin_lock(&txq->_xmit_lock); |
7a10d8c8 ED |
4353 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ |
4354 | WRITE_ONCE(txq->xmit_lock_owner, cpu); | |
22dd7495 JHS |
4355 | } |
4356 | ||
5a717f4f MT |
4357 | static inline bool __netif_tx_acquire(struct netdev_queue *txq) |
4358 | { | |
4359 | __acquire(&txq->_xmit_lock); | |
4360 | return true; | |
4361 | } | |
4362 | ||
4363 | static inline void __netif_tx_release(struct netdev_queue *txq) | |
4364 | { | |
4365 | __release(&txq->_xmit_lock); | |
4366 | } | |
4367 | ||
fd2ea0a7 DM |
4368 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
4369 | { | |
4370 | spin_lock_bh(&txq->_xmit_lock); | |
7a10d8c8 ED |
4371 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ |
4372 | WRITE_ONCE(txq->xmit_lock_owner, smp_processor_id()); | |
fd2ea0a7 DM |
4373 | } |
4374 | ||
4d29515f | 4375 | static inline bool __netif_tx_trylock(struct netdev_queue *txq) |
c3f26a26 | 4376 | { |
4d29515f | 4377 | bool ok = spin_trylock(&txq->_xmit_lock); |
7a10d8c8 ED |
4378 | |
4379 | if (likely(ok)) { | |
4380 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ | |
4381 | WRITE_ONCE(txq->xmit_lock_owner, smp_processor_id()); | |
4382 | } | |
c3f26a26 DM |
4383 | return ok; |
4384 | } | |
4385 | ||
4386 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
4387 | { | |
7a10d8c8 ED |
4388 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ |
4389 | WRITE_ONCE(txq->xmit_lock_owner, -1); | |
c3f26a26 DM |
4390 | spin_unlock(&txq->_xmit_lock); |
4391 | } | |
4392 | ||
4393 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
4394 | { | |
7a10d8c8 ED |
4395 | /* Pairs with READ_ONCE() in __dev_queue_xmit() */ |
4396 | WRITE_ONCE(txq->xmit_lock_owner, -1); | |
c3f26a26 DM |
4397 | spin_unlock_bh(&txq->_xmit_lock); |
4398 | } | |
4399 | ||
5337824f ED |
4400 | /* |
4401 | * txq->trans_start can be read locklessly from dev_watchdog() | |
4402 | */ | |
08baf561 ED |
4403 | static inline void txq_trans_update(struct netdev_queue *txq) |
4404 | { | |
4405 | if (txq->xmit_lock_owner != -1) | |
5337824f ED |
4406 | WRITE_ONCE(txq->trans_start, jiffies); |
4407 | } | |
4408 | ||
4409 | static inline void txq_trans_cond_update(struct netdev_queue *txq) | |
4410 | { | |
4411 | unsigned long now = jiffies; | |
4412 | ||
4413 | if (READ_ONCE(txq->trans_start) != now) | |
4414 | WRITE_ONCE(txq->trans_start, now); | |
08baf561 ED |
4415 | } |
4416 | ||
ba162f8e FW |
4417 | /* legacy drivers only, netdev_start_xmit() sets txq->trans_start */ |
4418 | static inline void netif_trans_update(struct net_device *dev) | |
4419 | { | |
9b36627a FW |
4420 | struct netdev_queue *txq = netdev_get_tx_queue(dev, 0); |
4421 | ||
5337824f | 4422 | txq_trans_cond_update(txq); |
ba162f8e FW |
4423 | } |
4424 | ||
d29f749e DJ |
4425 | /** |
4426 | * netif_tx_lock - grab network device transmit lock | |
4427 | * @dev: network device | |
d29f749e DJ |
4428 | * |
4429 | * Get network device transmit lock | |
4430 | */ | |
dab8fe32 | 4431 | void netif_tx_lock(struct net_device *dev); |
932ff279 HX |
4432 | |
4433 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
4434 | { | |
e8a0464c DM |
4435 | local_bh_disable(); |
4436 | netif_tx_lock(dev); | |
932ff279 HX |
4437 | } |
4438 | ||
dab8fe32 | 4439 | void netif_tx_unlock(struct net_device *dev); |
932ff279 HX |
4440 | |
4441 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
4442 | { | |
e8a0464c DM |
4443 | netif_tx_unlock(dev); |
4444 | local_bh_enable(); | |
932ff279 HX |
4445 | } |
4446 | ||
c773e847 | 4447 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 4448 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 4449 | __netif_tx_lock(txq, cpu); \ |
5a717f4f MT |
4450 | } else { \ |
4451 | __netif_tx_acquire(txq); \ | |
22dd7495 JHS |
4452 | } \ |
4453 | } | |
4454 | ||
5efeac44 EB |
4455 | #define HARD_TX_TRYLOCK(dev, txq) \ |
4456 | (((dev->features & NETIF_F_LLTX) == 0) ? \ | |
4457 | __netif_tx_trylock(txq) : \ | |
5a717f4f | 4458 | __netif_tx_acquire(txq)) |
5efeac44 | 4459 | |
c773e847 | 4460 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 4461 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 4462 | __netif_tx_unlock(txq); \ |
5a717f4f MT |
4463 | } else { \ |
4464 | __netif_tx_release(txq); \ | |
22dd7495 JHS |
4465 | } \ |
4466 | } | |
4467 | ||
1da177e4 LT |
4468 | static inline void netif_tx_disable(struct net_device *dev) |
4469 | { | |
fd2ea0a7 | 4470 | unsigned int i; |
c3f26a26 | 4471 | int cpu; |
fd2ea0a7 | 4472 | |
c3f26a26 DM |
4473 | local_bh_disable(); |
4474 | cpu = smp_processor_id(); | |
3aa6bce9 | 4475 | spin_lock(&dev->tx_global_lock); |
fd2ea0a7 DM |
4476 | for (i = 0; i < dev->num_tx_queues; i++) { |
4477 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
4478 | |
4479 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 4480 | netif_tx_stop_queue(txq); |
c3f26a26 | 4481 | __netif_tx_unlock(txq); |
fd2ea0a7 | 4482 | } |
3aa6bce9 | 4483 | spin_unlock(&dev->tx_global_lock); |
c3f26a26 | 4484 | local_bh_enable(); |
1da177e4 LT |
4485 | } |
4486 | ||
e308a5d8 DM |
4487 | static inline void netif_addr_lock(struct net_device *dev) |
4488 | { | |
1fc70edb | 4489 | unsigned char nest_level = 0; |
e308a5d8 | 4490 | |
1fc70edb TY |
4491 | #ifdef CONFIG_LOCKDEP |
4492 | nest_level = dev->nested_level; | |
4493 | #endif | |
4494 | spin_lock_nested(&dev->addr_list_lock, nest_level); | |
845e0ebb CW |
4495 | } |
4496 | ||
e308a5d8 DM |
4497 | static inline void netif_addr_lock_bh(struct net_device *dev) |
4498 | { | |
1fc70edb TY |
4499 | unsigned char nest_level = 0; |
4500 | ||
4501 | #ifdef CONFIG_LOCKDEP | |
4502 | nest_level = dev->nested_level; | |
4503 | #endif | |
4504 | local_bh_disable(); | |
4505 | spin_lock_nested(&dev->addr_list_lock, nest_level); | |
e308a5d8 DM |
4506 | } |
4507 | ||
4508 | static inline void netif_addr_unlock(struct net_device *dev) | |
4509 | { | |
4510 | spin_unlock(&dev->addr_list_lock); | |
4511 | } | |
4512 | ||
4513 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
4514 | { | |
4515 | spin_unlock_bh(&dev->addr_list_lock); | |
4516 | } | |
4517 | ||
f001fde5 | 4518 | /* |
31278e71 | 4519 | * dev_addrs walker. Should be used only for read access. Call with |
f001fde5 JP |
4520 | * rcu_read_lock held. |
4521 | */ | |
4522 | #define for_each_dev_addr(dev, ha) \ | |
31278e71 | 4523 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
f001fde5 | 4524 | |
1da177e4 LT |
4525 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
4526 | ||
f629d208 | 4527 | void ether_setup(struct net_device *dev); |
1da177e4 LT |
4528 | |
4529 | /* Support for loadable net-drivers */ | |
f629d208 | 4530 | struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, |
c835a677 | 4531 | unsigned char name_assign_type, |
f629d208 JP |
4532 | void (*setup)(struct net_device *), |
4533 | unsigned int txqs, unsigned int rxqs); | |
c835a677 TG |
4534 | #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \ |
4535 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, 1, 1) | |
36909ea4 | 4536 | |
c835a677 TG |
4537 | #define alloc_netdev_mq(sizeof_priv, name, name_assign_type, setup, count) \ |
4538 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, count, \ | |
4539 | count) | |
36909ea4 | 4540 | |
f629d208 JP |
4541 | int register_netdev(struct net_device *dev); |
4542 | void unregister_netdev(struct net_device *dev); | |
f001fde5 | 4543 | |
cd16627f BG |
4544 | int devm_register_netdev(struct device *dev, struct net_device *ndev); |
4545 | ||
22bedad3 | 4546 | /* General hardware address lists handling functions */ |
f629d208 JP |
4547 | int __hw_addr_sync(struct netdev_hw_addr_list *to_list, |
4548 | struct netdev_hw_addr_list *from_list, int addr_len); | |
4549 | void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, | |
4550 | struct netdev_hw_addr_list *from_list, int addr_len); | |
670e5b8e AD |
4551 | int __hw_addr_sync_dev(struct netdev_hw_addr_list *list, |
4552 | struct net_device *dev, | |
4553 | int (*sync)(struct net_device *, const unsigned char *), | |
4554 | int (*unsync)(struct net_device *, | |
4555 | const unsigned char *)); | |
e7946760 IK |
4556 | int __hw_addr_ref_sync_dev(struct netdev_hw_addr_list *list, |
4557 | struct net_device *dev, | |
4558 | int (*sync)(struct net_device *, | |
4559 | const unsigned char *, int), | |
4560 | int (*unsync)(struct net_device *, | |
4561 | const unsigned char *, int)); | |
4562 | void __hw_addr_ref_unsync_dev(struct netdev_hw_addr_list *list, | |
4563 | struct net_device *dev, | |
4564 | int (*unsync)(struct net_device *, | |
4565 | const unsigned char *, int)); | |
670e5b8e AD |
4566 | void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list, |
4567 | struct net_device *dev, | |
4568 | int (*unsync)(struct net_device *, | |
4569 | const unsigned char *)); | |
f629d208 | 4570 | void __hw_addr_init(struct netdev_hw_addr_list *list); |
22bedad3 | 4571 | |
f001fde5 | 4572 | /* Functions used for device addresses handling */ |
adeef3e3 JK |
4573 | void dev_addr_mod(struct net_device *dev, unsigned int offset, |
4574 | const void *addr, size_t len); | |
4575 | ||
48eab831 | 4576 | static inline void |
40af35fd | 4577 | __dev_addr_set(struct net_device *dev, const void *addr, size_t len) |
48eab831 | 4578 | { |
adeef3e3 | 4579 | dev_addr_mod(dev, 0, addr, len); |
48eab831 JK |
4580 | } |
4581 | ||
4582 | static inline void dev_addr_set(struct net_device *dev, const u8 *addr) | |
4583 | { | |
4584 | __dev_addr_set(dev, addr, dev->addr_len); | |
4585 | } | |
4586 | ||
f629d208 JP |
4587 | int dev_addr_add(struct net_device *dev, const unsigned char *addr, |
4588 | unsigned char addr_type); | |
4589 | int dev_addr_del(struct net_device *dev, const unsigned char *addr, | |
4590 | unsigned char addr_type); | |
a748ee24 JP |
4591 | |
4592 | /* Functions used for unicast addresses handling */ | |
f629d208 JP |
4593 | int dev_uc_add(struct net_device *dev, const unsigned char *addr); |
4594 | int dev_uc_add_excl(struct net_device *dev, const unsigned char *addr); | |
4595 | int dev_uc_del(struct net_device *dev, const unsigned char *addr); | |
4596 | int dev_uc_sync(struct net_device *to, struct net_device *from); | |
4597 | int dev_uc_sync_multiple(struct net_device *to, struct net_device *from); | |
4598 | void dev_uc_unsync(struct net_device *to, struct net_device *from); | |
4599 | void dev_uc_flush(struct net_device *dev); | |
4600 | void dev_uc_init(struct net_device *dev); | |
f001fde5 | 4601 | |
670e5b8e AD |
4602 | /** |
4603 | * __dev_uc_sync - Synchonize device's unicast list | |
4604 | * @dev: device to sync | |
4605 | * @sync: function to call if address should be added | |
4606 | * @unsync: function to call if address should be removed | |
4607 | * | |
4608 | * Add newly added addresses to the interface, and release | |
4609 | * addresses that have been deleted. | |
5e82b4b2 | 4610 | */ |
670e5b8e AD |
4611 | static inline int __dev_uc_sync(struct net_device *dev, |
4612 | int (*sync)(struct net_device *, | |
4613 | const unsigned char *), | |
4614 | int (*unsync)(struct net_device *, | |
4615 | const unsigned char *)) | |
4616 | { | |
4617 | return __hw_addr_sync_dev(&dev->uc, dev, sync, unsync); | |
4618 | } | |
4619 | ||
4620 | /** | |
e793c0f7 | 4621 | * __dev_uc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
4622 | * @dev: device to sync |
4623 | * @unsync: function to call if address should be removed | |
4624 | * | |
4625 | * Remove all addresses that were added to the device by dev_uc_sync(). | |
5e82b4b2 | 4626 | */ |
670e5b8e AD |
4627 | static inline void __dev_uc_unsync(struct net_device *dev, |
4628 | int (*unsync)(struct net_device *, | |
4629 | const unsigned char *)) | |
4630 | { | |
4631 | __hw_addr_unsync_dev(&dev->uc, dev, unsync); | |
4632 | } | |
4633 | ||
22bedad3 | 4634 | /* Functions used for multicast addresses handling */ |
f629d208 JP |
4635 | int dev_mc_add(struct net_device *dev, const unsigned char *addr); |
4636 | int dev_mc_add_global(struct net_device *dev, const unsigned char *addr); | |
4637 | int dev_mc_add_excl(struct net_device *dev, const unsigned char *addr); | |
4638 | int dev_mc_del(struct net_device *dev, const unsigned char *addr); | |
4639 | int dev_mc_del_global(struct net_device *dev, const unsigned char *addr); | |
4640 | int dev_mc_sync(struct net_device *to, struct net_device *from); | |
4641 | int dev_mc_sync_multiple(struct net_device *to, struct net_device *from); | |
4642 | void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
4643 | void dev_mc_flush(struct net_device *dev); | |
4644 | void dev_mc_init(struct net_device *dev); | |
f001fde5 | 4645 | |
670e5b8e AD |
4646 | /** |
4647 | * __dev_mc_sync - Synchonize device's multicast list | |
4648 | * @dev: device to sync | |
4649 | * @sync: function to call if address should be added | |
4650 | * @unsync: function to call if address should be removed | |
4651 | * | |
4652 | * Add newly added addresses to the interface, and release | |
4653 | * addresses that have been deleted. | |
5e82b4b2 | 4654 | */ |
670e5b8e AD |
4655 | static inline int __dev_mc_sync(struct net_device *dev, |
4656 | int (*sync)(struct net_device *, | |
4657 | const unsigned char *), | |
4658 | int (*unsync)(struct net_device *, | |
4659 | const unsigned char *)) | |
4660 | { | |
4661 | return __hw_addr_sync_dev(&dev->mc, dev, sync, unsync); | |
4662 | } | |
4663 | ||
4664 | /** | |
e793c0f7 | 4665 | * __dev_mc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
4666 | * @dev: device to sync |
4667 | * @unsync: function to call if address should be removed | |
4668 | * | |
4669 | * Remove all addresses that were added to the device by dev_mc_sync(). | |
5e82b4b2 | 4670 | */ |
670e5b8e AD |
4671 | static inline void __dev_mc_unsync(struct net_device *dev, |
4672 | int (*unsync)(struct net_device *, | |
4673 | const unsigned char *)) | |
4674 | { | |
4675 | __hw_addr_unsync_dev(&dev->mc, dev, unsync); | |
4676 | } | |
4677 | ||
4417da66 | 4678 | /* Functions used for secondary unicast and multicast support */ |
f629d208 | 4679 | void dev_set_rx_mode(struct net_device *dev); |
f629d208 JP |
4680 | int dev_set_promiscuity(struct net_device *dev, int inc); |
4681 | int dev_set_allmulti(struct net_device *dev, int inc); | |
4682 | void netdev_state_change(struct net_device *dev); | |
7061eb8c | 4683 | void __netdev_notify_peers(struct net_device *dev); |
f629d208 JP |
4684 | void netdev_notify_peers(struct net_device *dev); |
4685 | void netdev_features_change(struct net_device *dev); | |
1da177e4 | 4686 | /* Load a device via the kmod */ |
f629d208 JP |
4687 | void dev_load(struct net *net, const char *name); |
4688 | struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, | |
4689 | struct rtnl_link_stats64 *storage); | |
4690 | void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64, | |
4691 | const struct net_device_stats *netdev_stats); | |
44fa32f0 HK |
4692 | void dev_fetch_sw_netstats(struct rtnl_link_stats64 *s, |
4693 | const struct pcpu_sw_netstats __percpu *netstats); | |
a1839426 | 4694 | void dev_get_tstats64(struct net_device *dev, struct rtnl_link_stats64 *s); |
eeda3fd6 | 4695 | |
1da177e4 | 4696 | extern int netdev_max_backlog; |
3d48b53f MT |
4697 | extern int dev_rx_weight; |
4698 | extern int dev_tx_weight; | |
323ebb61 | 4699 | extern int gro_normal_batch; |
9ff162a8 | 4700 | |
1fc70edb TY |
4701 | enum { |
4702 | NESTED_SYNC_IMM_BIT, | |
4703 | NESTED_SYNC_TODO_BIT, | |
4704 | }; | |
4705 | ||
4706 | #define __NESTED_SYNC_BIT(bit) ((u32)1 << (bit)) | |
4707 | #define __NESTED_SYNC(name) __NESTED_SYNC_BIT(NESTED_SYNC_ ## name ## _BIT) | |
4708 | ||
4709 | #define NESTED_SYNC_IMM __NESTED_SYNC(IMM) | |
4710 | #define NESTED_SYNC_TODO __NESTED_SYNC(TODO) | |
4711 | ||
eff74233 | 4712 | struct netdev_nested_priv { |
1fc70edb | 4713 | unsigned char flags; |
eff74233 TY |
4714 | void *data; |
4715 | }; | |
4716 | ||
f629d208 | 4717 | bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev); |
44a40855 VY |
4718 | struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev, |
4719 | struct list_head **iter); | |
8b5be856 | 4720 | |
44a40855 VY |
4721 | /* iterate through upper list, must be called under RCU read lock */ |
4722 | #define netdev_for_each_upper_dev_rcu(dev, updev, iter) \ | |
4723 | for (iter = &(dev)->adj_list.upper, \ | |
4724 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter)); \ | |
4725 | updev; \ | |
4726 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter))) | |
4727 | ||
1a3f060c DA |
4728 | int netdev_walk_all_upper_dev_rcu(struct net_device *dev, |
4729 | int (*fn)(struct net_device *upper_dev, | |
eff74233 TY |
4730 | struct netdev_nested_priv *priv), |
4731 | struct netdev_nested_priv *priv); | |
1a3f060c DA |
4732 | |
4733 | bool netdev_has_upper_dev_all_rcu(struct net_device *dev, | |
4734 | struct net_device *upper_dev); | |
4735 | ||
25cc72a3 IS |
4736 | bool netdev_has_any_upper_dev(struct net_device *dev); |
4737 | ||
f629d208 JP |
4738 | void *netdev_lower_get_next_private(struct net_device *dev, |
4739 | struct list_head **iter); | |
4740 | void *netdev_lower_get_next_private_rcu(struct net_device *dev, | |
4741 | struct list_head **iter); | |
31088a11 VF |
4742 | |
4743 | #define netdev_for_each_lower_private(dev, priv, iter) \ | |
4744 | for (iter = (dev)->adj_list.lower.next, \ | |
4745 | priv = netdev_lower_get_next_private(dev, &(iter)); \ | |
4746 | priv; \ | |
4747 | priv = netdev_lower_get_next_private(dev, &(iter))) | |
4748 | ||
4749 | #define netdev_for_each_lower_private_rcu(dev, priv, iter) \ | |
4750 | for (iter = &(dev)->adj_list.lower, \ | |
4751 | priv = netdev_lower_get_next_private_rcu(dev, &(iter)); \ | |
4752 | priv; \ | |
4753 | priv = netdev_lower_get_next_private_rcu(dev, &(iter))) | |
4754 | ||
4085ebe8 VY |
4755 | void *netdev_lower_get_next(struct net_device *dev, |
4756 | struct list_head **iter); | |
7ce856aa | 4757 | |
4085ebe8 | 4758 | #define netdev_for_each_lower_dev(dev, ldev, iter) \ |
cfdd28be | 4759 | for (iter = (dev)->adj_list.lower.next, \ |
4085ebe8 VY |
4760 | ldev = netdev_lower_get_next(dev, &(iter)); \ |
4761 | ldev; \ | |
4762 | ldev = netdev_lower_get_next(dev, &(iter))) | |
4763 | ||
7151affe | 4764 | struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev, |
7ce856aa | 4765 | struct list_head **iter); |
1a3f060c DA |
4766 | int netdev_walk_all_lower_dev(struct net_device *dev, |
4767 | int (*fn)(struct net_device *lower_dev, | |
eff74233 TY |
4768 | struct netdev_nested_priv *priv), |
4769 | struct netdev_nested_priv *priv); | |
1a3f060c DA |
4770 | int netdev_walk_all_lower_dev_rcu(struct net_device *dev, |
4771 | int (*fn)(struct net_device *lower_dev, | |
eff74233 TY |
4772 | struct netdev_nested_priv *priv), |
4773 | struct netdev_nested_priv *priv); | |
1a3f060c | 4774 | |
f629d208 | 4775 | void *netdev_adjacent_get_private(struct list_head *adj_list); |
e001bfad | 4776 | void *netdev_lower_get_first_private_rcu(struct net_device *dev); |
f629d208 JP |
4777 | struct net_device *netdev_master_upper_dev_get(struct net_device *dev); |
4778 | struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev); | |
42ab19ee DA |
4779 | int netdev_upper_dev_link(struct net_device *dev, struct net_device *upper_dev, |
4780 | struct netlink_ext_ack *extack); | |
f629d208 | 4781 | int netdev_master_upper_dev_link(struct net_device *dev, |
6dffb044 | 4782 | struct net_device *upper_dev, |
42ab19ee DA |
4783 | void *upper_priv, void *upper_info, |
4784 | struct netlink_ext_ack *extack); | |
f629d208 JP |
4785 | void netdev_upper_dev_unlink(struct net_device *dev, |
4786 | struct net_device *upper_dev); | |
32b6d34f TY |
4787 | int netdev_adjacent_change_prepare(struct net_device *old_dev, |
4788 | struct net_device *new_dev, | |
4789 | struct net_device *dev, | |
4790 | struct netlink_ext_ack *extack); | |
4791 | void netdev_adjacent_change_commit(struct net_device *old_dev, | |
4792 | struct net_device *new_dev, | |
4793 | struct net_device *dev); | |
4794 | void netdev_adjacent_change_abort(struct net_device *old_dev, | |
4795 | struct net_device *new_dev, | |
4796 | struct net_device *dev); | |
5bb025fa | 4797 | void netdev_adjacent_rename_links(struct net_device *dev, char *oldname); |
f629d208 JP |
4798 | void *netdev_lower_dev_get_private(struct net_device *dev, |
4799 | struct net_device *lower_dev); | |
04d48266 JP |
4800 | void netdev_lower_state_changed(struct net_device *lower_dev, |
4801 | void *lower_state_info); | |
960fb622 ED |
4802 | |
4803 | /* RSS keys are 40 or 52 bytes long */ | |
4804 | #define NETDEV_RSS_KEY_LEN 52 | |
ba905f5e | 4805 | extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
4806 | void netdev_rss_key_fill(void *buffer, size_t len); |
4807 | ||
f629d208 | 4808 | int skb_checksum_help(struct sk_buff *skb); |
b72b5bf6 | 4809 | int skb_crc32c_csum_help(struct sk_buff *skb); |
43c26a1a DC |
4810 | int skb_csum_hwoffload_help(struct sk_buff *skb, |
4811 | const netdev_features_t features); | |
4812 | ||
61bd3857 MS |
4813 | struct netdev_bonding_info { |
4814 | ifslave slave; | |
4815 | ifbond master; | |
4816 | }; | |
4817 | ||
4818 | struct netdev_notifier_bonding_info { | |
4819 | struct netdev_notifier_info info; /* must be first */ | |
4820 | struct netdev_bonding_info bonding_info; | |
4821 | }; | |
4822 | ||
4823 | void netdev_bonding_info_change(struct net_device *dev, | |
4824 | struct netdev_bonding_info *bonding_info); | |
4825 | ||
6b08d6c1 MK |
4826 | #if IS_ENABLED(CONFIG_ETHTOOL_NETLINK) |
4827 | void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data); | |
4828 | #else | |
4829 | static inline void ethtool_notify(struct net_device *dev, unsigned int cmd, | |
4830 | const void *data) | |
4831 | { | |
4832 | } | |
4833 | #endif | |
4834 | ||
53d6471c | 4835 | __be16 skb_network_protocol(struct sk_buff *skb, int *depth); |
ec5f0615 PS |
4836 | |
4837 | static inline bool can_checksum_protocol(netdev_features_t features, | |
4838 | __be16 protocol) | |
4839 | { | |
c8cd0989 TH |
4840 | if (protocol == htons(ETH_P_FCOE)) |
4841 | return !!(features & NETIF_F_FCOE_CRC); | |
4842 | ||
4843 | /* Assume this is an IP checksum (not SCTP CRC) */ | |
4844 | ||
4845 | if (features & NETIF_F_HW_CSUM) { | |
4846 | /* Can checksum everything */ | |
4847 | return true; | |
4848 | } | |
4849 | ||
4850 | switch (protocol) { | |
4851 | case htons(ETH_P_IP): | |
4852 | return !!(features & NETIF_F_IP_CSUM); | |
4853 | case htons(ETH_P_IPV6): | |
4854 | return !!(features & NETIF_F_IPV6_CSUM); | |
4855 | default: | |
4856 | return false; | |
4857 | } | |
ec5f0615 | 4858 | } |
12b0004d | 4859 | |
fb286bb2 | 4860 | #ifdef CONFIG_BUG |
7fe50ac8 | 4861 | void netdev_rx_csum_fault(struct net_device *dev, struct sk_buff *skb); |
fb286bb2 | 4862 | #else |
7fe50ac8 CW |
4863 | static inline void netdev_rx_csum_fault(struct net_device *dev, |
4864 | struct sk_buff *skb) | |
fb286bb2 HX |
4865 | { |
4866 | } | |
4867 | #endif | |
1da177e4 | 4868 | /* rx skb timestamps */ |
f629d208 JP |
4869 | void net_enable_timestamp(void); |
4870 | void net_disable_timestamp(void); | |
1da177e4 | 4871 | |
97dc7cd9 GE |
4872 | static inline ktime_t netdev_get_tstamp(struct net_device *dev, |
4873 | const struct skb_shared_hwtstamps *hwtstamps, | |
4874 | bool cycles) | |
4875 | { | |
4876 | const struct net_device_ops *ops = dev->netdev_ops; | |
4877 | ||
4878 | if (ops->ndo_get_tstamp) | |
4879 | return ops->ndo_get_tstamp(dev, hwtstamps, cycles); | |
4880 | ||
4881 | return hwtstamps->hwtstamp; | |
4882 | } | |
4883 | ||
4798248e | 4884 | static inline netdev_tx_t __netdev_start_xmit(const struct net_device_ops *ops, |
fa2dbdc2 DM |
4885 | struct sk_buff *skb, struct net_device *dev, |
4886 | bool more) | |
4798248e | 4887 | { |
6b16f9ee | 4888 | __this_cpu_write(softnet_data.xmit.more, more); |
0b725a2c | 4889 | return ops->ndo_start_xmit(skb, dev); |
4798248e DM |
4890 | } |
4891 | ||
97cdcf37 FW |
4892 | static inline bool netdev_xmit_more(void) |
4893 | { | |
4894 | return __this_cpu_read(softnet_data.xmit.more); | |
4895 | } | |
4896 | ||
10b3ad8c | 4897 | static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev, |
fa2dbdc2 | 4898 | struct netdev_queue *txq, bool more) |
4798248e DM |
4899 | { |
4900 | const struct net_device_ops *ops = dev->netdev_ops; | |
2183435c | 4901 | netdev_tx_t rc; |
4798248e | 4902 | |
fa2dbdc2 | 4903 | rc = __netdev_start_xmit(ops, skb, dev, more); |
10b3ad8c DM |
4904 | if (rc == NETDEV_TX_OK) |
4905 | txq_trans_update(txq); | |
4906 | ||
4907 | return rc; | |
4798248e DM |
4908 | } |
4909 | ||
b793dc5c | 4910 | int netdev_class_create_file_ns(const struct class_attribute *class_attr, |
42a2d923 | 4911 | const void *ns); |
b793dc5c | 4912 | void netdev_class_remove_file_ns(const struct class_attribute *class_attr, |
42a2d923 | 4913 | const void *ns); |
58292cbe | 4914 | |
737aec57 | 4915 | extern const struct kobj_ns_type_operations net_ns_type_operations; |
04600794 | 4916 | |
f629d208 | 4917 | const char *netdev_drivername(const struct net_device *dev); |
6579e57b | 4918 | |
da08143b MK |
4919 | static inline netdev_features_t netdev_intersect_features(netdev_features_t f1, |
4920 | netdev_features_t f2) | |
4921 | { | |
c8cd0989 TH |
4922 | if ((f1 ^ f2) & NETIF_F_HW_CSUM) { |
4923 | if (f1 & NETIF_F_HW_CSUM) | |
b6a0e72a | 4924 | f1 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 4925 | else |
b6a0e72a | 4926 | f2 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 4927 | } |
da08143b | 4928 | |
c8cd0989 | 4929 | return f1 & f2; |
da08143b MK |
4930 | } |
4931 | ||
c8f44aff MM |
4932 | static inline netdev_features_t netdev_get_wanted_features( |
4933 | struct net_device *dev) | |
5455c699 MM |
4934 | { |
4935 | return (dev->features & ~dev->hw_features) | dev->wanted_features; | |
4936 | } | |
c8f44aff MM |
4937 | netdev_features_t netdev_increment_features(netdev_features_t all, |
4938 | netdev_features_t one, netdev_features_t mask); | |
b0ce3508 ED |
4939 | |
4940 | /* Allow TSO being used on stacked device : | |
4941 | * Performing the GSO segmentation before last device | |
4942 | * is a performance improvement. | |
4943 | */ | |
4944 | static inline netdev_features_t netdev_add_tso_features(netdev_features_t features, | |
4945 | netdev_features_t mask) | |
4946 | { | |
4947 | return netdev_increment_features(features, NETIF_F_ALL_TSO, mask); | |
4948 | } | |
4949 | ||
6cb6a27c | 4950 | int __netdev_update_features(struct net_device *dev); |
5455c699 | 4951 | void netdev_update_features(struct net_device *dev); |
afe12cc8 | 4952 | void netdev_change_features(struct net_device *dev); |
7f353bf2 | 4953 | |
fc4a7489 PM |
4954 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
4955 | struct net_device *dev); | |
4956 | ||
e38f3025 TM |
4957 | netdev_features_t passthru_features_check(struct sk_buff *skb, |
4958 | struct net_device *dev, | |
4959 | netdev_features_t features); | |
c1e756bf | 4960 | netdev_features_t netif_skb_features(struct sk_buff *skb); |
d457a0e3 | 4961 | void skb_warn_bad_offload(const struct sk_buff *skb); |
58e998c6 | 4962 | |
4d29515f | 4963 | static inline bool net_gso_ok(netdev_features_t features, int gso_type) |
576a30eb | 4964 | { |
7b748340 | 4965 | netdev_features_t feature = (netdev_features_t)gso_type << NETIF_F_GSO_SHIFT; |
0345e186 MM |
4966 | |
4967 | /* check flags correspondence */ | |
4968 | BUILD_BUG_ON(SKB_GSO_TCPV4 != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT)); | |
0345e186 MM |
4969 | BUILD_BUG_ON(SKB_GSO_DODGY != (NETIF_F_GSO_ROBUST >> NETIF_F_GSO_SHIFT)); |
4970 | BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT)); | |
cbc53e08 | 4971 | BUILD_BUG_ON(SKB_GSO_TCP_FIXEDID != (NETIF_F_TSO_MANGLEID >> NETIF_F_GSO_SHIFT)); |
0345e186 MM |
4972 | BUILD_BUG_ON(SKB_GSO_TCPV6 != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT)); |
4973 | BUILD_BUG_ON(SKB_GSO_FCOE != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
4974 | BUILD_BUG_ON(SKB_GSO_GRE != (NETIF_F_GSO_GRE >> NETIF_F_GSO_SHIFT)); |
4975 | BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT)); | |
7e13318d TH |
4976 | BUILD_BUG_ON(SKB_GSO_IPXIP4 != (NETIF_F_GSO_IPXIP4 >> NETIF_F_GSO_SHIFT)); |
4977 | BUILD_BUG_ON(SKB_GSO_IPXIP6 != (NETIF_F_GSO_IPXIP6 >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
4978 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT)); |
4979 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT)); | |
802ab55a | 4980 | BUILD_BUG_ON(SKB_GSO_PARTIAL != (NETIF_F_GSO_PARTIAL >> NETIF_F_GSO_SHIFT)); |
e585f236 | 4981 | BUILD_BUG_ON(SKB_GSO_TUNNEL_REMCSUM != (NETIF_F_GSO_TUNNEL_REMCSUM >> NETIF_F_GSO_SHIFT)); |
90017acc | 4982 | BUILD_BUG_ON(SKB_GSO_SCTP != (NETIF_F_GSO_SCTP >> NETIF_F_GSO_SHIFT)); |
c7ef8f0c | 4983 | BUILD_BUG_ON(SKB_GSO_ESP != (NETIF_F_GSO_ESP >> NETIF_F_GSO_SHIFT)); |
0c19f846 | 4984 | BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_GSO_UDP >> NETIF_F_GSO_SHIFT)); |
83aa025f | 4985 | BUILD_BUG_ON(SKB_GSO_UDP_L4 != (NETIF_F_GSO_UDP_L4 >> NETIF_F_GSO_SHIFT)); |
3b335832 | 4986 | BUILD_BUG_ON(SKB_GSO_FRAGLIST != (NETIF_F_GSO_FRAGLIST >> NETIF_F_GSO_SHIFT)); |
0345e186 | 4987 | |
d6b4991a | 4988 | return (features & feature) == feature; |
576a30eb HX |
4989 | } |
4990 | ||
4d29515f | 4991 | static inline bool skb_gso_ok(struct sk_buff *skb, netdev_features_t features) |
bcd76111 | 4992 | { |
278b2513 | 4993 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
21dc3301 | 4994 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
bcd76111 HX |
4995 | } |
4996 | ||
8b86a61d | 4997 | static inline bool netif_needs_gso(struct sk_buff *skb, |
4d29515f | 4998 | netdev_features_t features) |
7967168c | 4999 | { |
fc741216 | 5000 | return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || |
cdbee74c YZ |
5001 | unlikely((skb->ip_summed != CHECKSUM_PARTIAL) && |
5002 | (skb->ip_summed != CHECKSUM_UNNECESSARY))); | |
7967168c HX |
5003 | } |
5004 | ||
14d7b812 JK |
5005 | void netif_set_tso_max_size(struct net_device *dev, unsigned int size); |
5006 | void netif_set_tso_max_segs(struct net_device *dev, unsigned int segs); | |
6df6398f JK |
5007 | void netif_inherit_tso_max(struct net_device *to, |
5008 | const struct net_device *from); | |
5009 | ||
3c175784 SD |
5010 | static inline bool netif_is_macsec(const struct net_device *dev) |
5011 | { | |
5012 | return dev->priv_flags & IFF_MACSEC; | |
5013 | } | |
5014 | ||
b618aaa9 | 5015 | static inline bool netif_is_macvlan(const struct net_device *dev) |
a6cc0cfa JF |
5016 | { |
5017 | return dev->priv_flags & IFF_MACVLAN; | |
5018 | } | |
5019 | ||
b618aaa9 | 5020 | static inline bool netif_is_macvlan_port(const struct net_device *dev) |
2f33e7d5 MB |
5021 | { |
5022 | return dev->priv_flags & IFF_MACVLAN_PORT; | |
5023 | } | |
5024 | ||
b618aaa9 | 5025 | static inline bool netif_is_bond_master(const struct net_device *dev) |
8a7fbfab | 5026 | { |
5027 | return dev->flags & IFF_MASTER && dev->priv_flags & IFF_BONDING; | |
5028 | } | |
5029 | ||
b618aaa9 | 5030 | static inline bool netif_is_bond_slave(const struct net_device *dev) |
1765a575 JP |
5031 | { |
5032 | return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING; | |
5033 | } | |
5034 | ||
3bdc0eba BG |
5035 | static inline bool netif_supports_nofcs(struct net_device *dev) |
5036 | { | |
5037 | return dev->priv_flags & IFF_SUPP_NOFCS; | |
5038 | } | |
5039 | ||
d5256083 DB |
5040 | static inline bool netif_has_l3_rx_handler(const struct net_device *dev) |
5041 | { | |
5042 | return dev->priv_flags & IFF_L3MDEV_RX_HANDLER; | |
5043 | } | |
5044 | ||
007979ea | 5045 | static inline bool netif_is_l3_master(const struct net_device *dev) |
4e3c8992 | 5046 | { |
007979ea | 5047 | return dev->priv_flags & IFF_L3MDEV_MASTER; |
4e3c8992 DA |
5048 | } |
5049 | ||
fee6d4c7 DA |
5050 | static inline bool netif_is_l3_slave(const struct net_device *dev) |
5051 | { | |
5052 | return dev->priv_flags & IFF_L3MDEV_SLAVE; | |
5053 | } | |
5054 | ||
9a5cb797 GS |
5055 | static inline int dev_sdif(const struct net_device *dev) |
5056 | { | |
5057 | #ifdef CONFIG_NET_L3_MASTER_DEV | |
5058 | if (netif_is_l3_slave(dev)) | |
5059 | return dev->ifindex; | |
5060 | #endif | |
5061 | return 0; | |
5062 | } | |
5063 | ||
0894ae3f JP |
5064 | static inline bool netif_is_bridge_master(const struct net_device *dev) |
5065 | { | |
5066 | return dev->priv_flags & IFF_EBRIDGE; | |
5067 | } | |
5068 | ||
28f9ee22 VY |
5069 | static inline bool netif_is_bridge_port(const struct net_device *dev) |
5070 | { | |
5071 | return dev->priv_flags & IFF_BRIDGE_PORT; | |
5072 | } | |
5073 | ||
35d4e172 JP |
5074 | static inline bool netif_is_ovs_master(const struct net_device *dev) |
5075 | { | |
5076 | return dev->priv_flags & IFF_OPENVSWITCH; | |
5077 | } | |
5078 | ||
5be66141 JP |
5079 | static inline bool netif_is_ovs_port(const struct net_device *dev) |
5080 | { | |
5081 | return dev->priv_flags & IFF_OVS_DATAPATH; | |
5082 | } | |
5083 | ||
f11e5bd1 MK |
5084 | static inline bool netif_is_any_bridge_master(const struct net_device *dev) |
5085 | { | |
5086 | return netif_is_bridge_master(dev) || netif_is_ovs_master(dev); | |
5087 | } | |
5088 | ||
df23bb18 SB |
5089 | static inline bool netif_is_any_bridge_port(const struct net_device *dev) |
5090 | { | |
5091 | return netif_is_bridge_port(dev) || netif_is_ovs_port(dev); | |
5092 | } | |
5093 | ||
b618aaa9 | 5094 | static inline bool netif_is_team_master(const struct net_device *dev) |
c981e421 JP |
5095 | { |
5096 | return dev->priv_flags & IFF_TEAM; | |
5097 | } | |
5098 | ||
b618aaa9 | 5099 | static inline bool netif_is_team_port(const struct net_device *dev) |
f7f019ee JP |
5100 | { |
5101 | return dev->priv_flags & IFF_TEAM_PORT; | |
5102 | } | |
5103 | ||
b618aaa9 | 5104 | static inline bool netif_is_lag_master(const struct net_device *dev) |
7be61833 JP |
5105 | { |
5106 | return netif_is_bond_master(dev) || netif_is_team_master(dev); | |
5107 | } | |
5108 | ||
b618aaa9 | 5109 | static inline bool netif_is_lag_port(const struct net_device *dev) |
e0ba1414 JP |
5110 | { |
5111 | return netif_is_bond_slave(dev) || netif_is_team_port(dev); | |
5112 | } | |
5113 | ||
d4ab4286 KJ |
5114 | static inline bool netif_is_rxfh_configured(const struct net_device *dev) |
5115 | { | |
5116 | return dev->priv_flags & IFF_RXFH_CONFIGURED; | |
5117 | } | |
5118 | ||
30c8bd5a SS |
5119 | static inline bool netif_is_failover(const struct net_device *dev) |
5120 | { | |
5121 | return dev->priv_flags & IFF_FAILOVER; | |
5122 | } | |
5123 | ||
5124 | static inline bool netif_is_failover_slave(const struct net_device *dev) | |
5125 | { | |
5126 | return dev->priv_flags & IFF_FAILOVER_SLAVE; | |
5127 | } | |
5128 | ||
02875878 ED |
5129 | /* This device needs to keep skb dst for qdisc enqueue or ndo_start_xmit() */ |
5130 | static inline void netif_keep_dst(struct net_device *dev) | |
5131 | { | |
5132 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM); | |
5133 | } | |
5134 | ||
18d3df3e PA |
5135 | /* return true if dev can't cope with mtu frames that need vlan tag insertion */ |
5136 | static inline bool netif_reduces_vlan_mtu(struct net_device *dev) | |
5137 | { | |
5138 | /* TODO: reserve and use an additional IFF bit, if we get more users */ | |
01992152 | 5139 | return netif_is_macsec(dev); |
18d3df3e PA |
5140 | } |
5141 | ||
505d4f73 | 5142 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 | 5143 | |
571ba423 JP |
5144 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ |
5145 | ||
5146 | /* netdev_printk helpers, similar to dev_printk */ | |
5147 | ||
5148 | static inline const char *netdev_name(const struct net_device *dev) | |
5149 | { | |
c6f854d5 VF |
5150 | if (!dev->name[0] || strchr(dev->name, '%')) |
5151 | return "(unnamed net_device)"; | |
571ba423 JP |
5152 | return dev->name; |
5153 | } | |
5154 | ||
ccc7f496 VF |
5155 | static inline const char *netdev_reg_state(const struct net_device *dev) |
5156 | { | |
5157 | switch (dev->reg_state) { | |
5158 | case NETREG_UNINITIALIZED: return " (uninitialized)"; | |
5159 | case NETREG_REGISTERED: return ""; | |
5160 | case NETREG_UNREGISTERING: return " (unregistering)"; | |
5161 | case NETREG_UNREGISTERED: return " (unregistered)"; | |
5162 | case NETREG_RELEASED: return " (released)"; | |
5163 | case NETREG_DUMMY: return " (dummy)"; | |
5164 | } | |
5165 | ||
5166 | WARN_ONCE(1, "%s: unknown reg_state %d\n", dev->name, dev->reg_state); | |
5167 | return " (unknown)"; | |
5168 | } | |
5169 | ||
8909c9ad VK |
5170 | #define MODULE_ALIAS_NETDEV(device) \ |
5171 | MODULE_ALIAS("netdev-" device) | |
5172 | ||
571ba423 JP |
5173 | /* |
5174 | * netdev_WARN() acts like dev_printk(), but with the key difference | |
5175 | * of using a WARN/WARN_ON to get the message out, including the | |
5176 | * file/line information and a backtrace. | |
5177 | */ | |
5178 | #define netdev_WARN(dev, format, args...) \ | |
e1cfe3d0 | 5179 | WARN(1, "netdevice: %s%s: " format, netdev_name(dev), \ |
ccc7f496 | 5180 | netdev_reg_state(dev), ##args) |
571ba423 | 5181 | |
72dd831e | 5182 | #define netdev_WARN_ONCE(dev, format, args...) \ |
e1cfe3d0 | 5183 | WARN_ONCE(1, "netdevice: %s%s: " format, netdev_name(dev), \ |
375ef2b1 GP |
5184 | netdev_reg_state(dev), ##args) |
5185 | ||
900ff8c6 CW |
5186 | /* |
5187 | * The list of packet types we will receive (as opposed to discard) | |
5188 | * and the routines to invoke. | |
5189 | * | |
5190 | * Why 16. Because with 16 the only overlap we get on a hash of the | |
5191 | * low nibble of the protocol value is RARP/SNAP/X.25. | |
5192 | * | |
900ff8c6 | 5193 | * 0800 IP |
900ff8c6 CW |
5194 | * 0001 802.3 |
5195 | * 0002 AX.25 | |
5196 | * 0004 802.2 | |
5197 | * 8035 RARP | |
5198 | * 0005 SNAP | |
5199 | * 0805 X.25 | |
5200 | * 0806 ARP | |
5201 | * 8137 IPX | |
5202 | * 0009 Localtalk | |
5203 | * 86DD IPv6 | |
5204 | */ | |
5205 | #define PTYPE_HASH_SIZE (16) | |
5206 | #define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) | |
5207 | ||
744b8376 VO |
5208 | extern struct list_head ptype_all __read_mostly; |
5209 | extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly; | |
5210 | ||
4de83b88 MB |
5211 | extern struct net_device *blackhole_netdev; |
5212 | ||
6c1c5097 ED |
5213 | /* Note: Avoid these macros in fast path, prefer per-cpu or per-queue counters. */ |
5214 | #define DEV_STATS_INC(DEV, FIELD) atomic_long_inc(&(DEV)->stats.__##FIELD) | |
5215 | #define DEV_STATS_ADD(DEV, FIELD, VAL) \ | |
5216 | atomic_long_add((VAL), &(DEV)->stats.__##FIELD) | |
5217 | ||
385a154c | 5218 | #endif /* _LINUX_NETDEVICE_H */ |