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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> | |
31 | ||
1da177e4 | 32 | #include <linux/percpu.h> |
4d5b78c0 | 33 | #include <linux/rculist.h> |
bea3348e | 34 | #include <linux/workqueue.h> |
114cf580 | 35 | #include <linux/dynamic_queue_limits.h> |
1da177e4 | 36 | |
a050c33f | 37 | #include <net/net_namespace.h> |
7a6b6f51 | 38 | #ifdef CONFIG_DCB |
2f90b865 AD |
39 | #include <net/dcbnl.h> |
40 | #endif | |
5bc1421e | 41 | #include <net/netprio_cgroup.h> |
e817f856 | 42 | #include <net/xdp.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> |
59cc1f61 | 49 | #include <linux/hashtable.h> |
406f42fa | 50 | #include <linux/rbtree.h> |
a59e2ecb | 51 | |
115c1d6e | 52 | struct netpoll_info; |
313162d0 | 53 | struct device; |
cc69837f | 54 | struct ethtool_ops; |
c1f19b51 | 55 | struct phy_device; |
2f657a60 | 56 | struct dsa_port; |
607259a6 | 57 | struct ip_tunnel_parm; |
30e9bb84 AT |
58 | struct macsec_context; |
59 | struct macsec_ops; | |
c6e970a0 | 60 | |
e679c9c1 | 61 | struct sfp_bus; |
704232c2 JB |
62 | /* 802.11 specific */ |
63 | struct wireless_dev; | |
98a18b6f AA |
64 | /* 802.15.4 specific */ |
65 | struct wpan_dev; | |
03c57747 | 66 | struct mpls_dev; |
7c46a640 AD |
67 | /* UDP Tunnel offloads */ |
68 | struct udp_tunnel_info; | |
cc4e3835 JK |
69 | struct udp_tunnel_nic_info; |
70 | struct udp_tunnel_nic; | |
a7862b45 | 71 | struct bpf_prog; |
814abfab | 72 | struct xdp_buff; |
1da177e4 | 73 | |
5198d545 | 74 | void synchronize_net(void); |
f629d208 JP |
75 | void netdev_set_default_ethtool_ops(struct net_device *dev, |
76 | const struct ethtool_ops *ops); | |
d07d7507 | 77 | |
9a1654ba JP |
78 | /* Backlog congestion levels */ |
79 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
80 | #define NET_RX_DROP 1 /* packet dropped */ | |
81 | ||
7151affe TY |
82 | #define MAX_NEST_DEV 8 |
83 | ||
572a9d7b PM |
84 | /* |
85 | * Transmit return codes: transmit return codes originate from three different | |
86 | * namespaces: | |
87 | * | |
88 | * - qdisc return codes | |
89 | * - driver transmit return codes | |
90 | * - errno values | |
91 | * | |
92 | * Drivers are allowed to return any one of those in their hard_start_xmit() | |
93 | * function. Real network devices commonly used with qdiscs should only return | |
94 | * the driver transmit return codes though - when qdiscs are used, the actual | |
95 | * transmission happens asynchronously, so the value is not propagated to | |
5e82b4b2 BH |
96 | * higher layers. Virtual network devices transmit synchronously; in this case |
97 | * the driver transmit return codes are consumed by dev_queue_xmit(), and all | |
572a9d7b PM |
98 | * others are propagated to higher layers. |
99 | */ | |
100 | ||
101 | /* qdisc ->enqueue() return codes. */ | |
102 | #define NET_XMIT_SUCCESS 0x00 | |
9a1654ba JP |
103 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
104 | #define NET_XMIT_CN 0x02 /* congestion notification */ | |
9a1654ba | 105 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ |
1da177e4 | 106 | |
b9df3cb8 GR |
107 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
108 | * indicates that the device will soon be dropping packets, or already drops | |
109 | * some packets of the same priority; prompting us to send less aggressively. */ | |
572a9d7b | 110 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
1da177e4 LT |
111 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
112 | ||
dc1f8bf6 | 113 | /* Driver transmit return codes */ |
9a1654ba | 114 | #define NETDEV_TX_MASK 0xf0 |
572a9d7b | 115 | |
dc1f8bf6 | 116 | enum netdev_tx { |
572a9d7b | 117 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
9a1654ba JP |
118 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
119 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ | |
dc1f8bf6 SH |
120 | }; |
121 | typedef enum netdev_tx netdev_tx_t; | |
122 | ||
9a1654ba JP |
123 | /* |
124 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; | |
125 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. | |
126 | */ | |
127 | static inline bool dev_xmit_complete(int rc) | |
128 | { | |
129 | /* | |
130 | * Positive cases with an skb consumed by a driver: | |
131 | * - successful transmission (rc == NETDEV_TX_OK) | |
132 | * - error while transmitting (rc < 0) | |
133 | * - error while queueing to a different device (rc & NET_XMIT_MASK) | |
134 | */ | |
135 | if (likely(rc < NET_XMIT_MASK)) | |
136 | return true; | |
137 | ||
138 | return false; | |
139 | } | |
140 | ||
1da177e4 | 141 | /* |
5e82b4b2 | 142 | * Compute the worst-case header length according to the protocols |
1da177e4 LT |
143 | * used. |
144 | */ | |
fe2918b0 | 145 | |
c0eb4540 KS |
146 | #if defined(CONFIG_HYPERV_NET) |
147 | # define LL_MAX_HEADER 128 | |
148 | #elif defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) | |
8388e3da DM |
149 | # if defined(CONFIG_MAC80211_MESH) |
150 | # define LL_MAX_HEADER 128 | |
151 | # else | |
152 | # define LL_MAX_HEADER 96 | |
153 | # endif | |
1da177e4 | 154 | #else |
8388e3da | 155 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
156 | #endif |
157 | ||
d11ead75 BH |
158 | #if !IS_ENABLED(CONFIG_NET_IPIP) && !IS_ENABLED(CONFIG_NET_IPGRE) && \ |
159 | !IS_ENABLED(CONFIG_IPV6_SIT) && !IS_ENABLED(CONFIG_IPV6_TUNNEL) | |
1da177e4 LT |
160 | #define MAX_HEADER LL_MAX_HEADER |
161 | #else | |
162 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
163 | #endif | |
164 | ||
165 | /* | |
be1f3c2c BH |
166 | * Old network device statistics. Fields are native words |
167 | * (unsigned long) so they can be read and written atomically. | |
1da177e4 | 168 | */ |
fe2918b0 | 169 | |
d94d9fee | 170 | struct net_device_stats { |
3cfde79c BH |
171 | unsigned long rx_packets; |
172 | unsigned long tx_packets; | |
173 | unsigned long rx_bytes; | |
174 | unsigned long tx_bytes; | |
175 | unsigned long rx_errors; | |
176 | unsigned long tx_errors; | |
177 | unsigned long rx_dropped; | |
178 | unsigned long tx_dropped; | |
179 | unsigned long multicast; | |
1da177e4 | 180 | unsigned long collisions; |
1da177e4 | 181 | unsigned long rx_length_errors; |
3cfde79c BH |
182 | unsigned long rx_over_errors; |
183 | unsigned long rx_crc_errors; | |
184 | unsigned long rx_frame_errors; | |
185 | unsigned long rx_fifo_errors; | |
186 | unsigned long rx_missed_errors; | |
1da177e4 LT |
187 | unsigned long tx_aborted_errors; |
188 | unsigned long tx_carrier_errors; | |
189 | unsigned long tx_fifo_errors; | |
190 | unsigned long tx_heartbeat_errors; | |
191 | unsigned long tx_window_errors; | |
1da177e4 LT |
192 | unsigned long rx_compressed; |
193 | unsigned long tx_compressed; | |
194 | }; | |
195 | ||
1da177e4 LT |
196 | |
197 | #include <linux/cache.h> | |
198 | #include <linux/skbuff.h> | |
199 | ||
adc9300e | 200 | #ifdef CONFIG_RPS |
c5905afb | 201 | #include <linux/static_key.h> |
dc05360f ED |
202 | extern struct static_key_false rps_needed; |
203 | extern struct static_key_false rfs_needed; | |
adc9300e ED |
204 | #endif |
205 | ||
1da177e4 LT |
206 | struct neighbour; |
207 | struct neigh_parms; | |
208 | struct sk_buff; | |
209 | ||
f001fde5 JP |
210 | struct netdev_hw_addr { |
211 | struct list_head list; | |
406f42fa | 212 | struct rb_node node; |
f001fde5 JP |
213 | unsigned char addr[MAX_ADDR_LEN]; |
214 | unsigned char type; | |
ccffad25 JP |
215 | #define NETDEV_HW_ADDR_T_LAN 1 |
216 | #define NETDEV_HW_ADDR_T_SAN 2 | |
8e1b3884 TY |
217 | #define NETDEV_HW_ADDR_T_UNICAST 3 |
218 | #define NETDEV_HW_ADDR_T_MULTICAST 4 | |
22bedad3 | 219 | bool global_use; |
4cd729b0 | 220 | int sync_cnt; |
8f8f103d | 221 | int refcount; |
4543fbef | 222 | int synced; |
f001fde5 JP |
223 | struct rcu_head rcu_head; |
224 | }; | |
225 | ||
31278e71 JP |
226 | struct netdev_hw_addr_list { |
227 | struct list_head list; | |
228 | int count; | |
406f42fa GN |
229 | |
230 | /* Auxiliary tree for faster lookup on addition and deletion */ | |
231 | struct rb_root tree; | |
31278e71 JP |
232 | }; |
233 | ||
22bedad3 JP |
234 | #define netdev_hw_addr_list_count(l) ((l)->count) |
235 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) | |
236 | #define netdev_hw_addr_list_for_each(ha, l) \ | |
237 | list_for_each_entry(ha, &(l)->list, list) | |
32e7bfc4 | 238 | |
22bedad3 JP |
239 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
240 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) | |
241 | #define netdev_for_each_uc_addr(ha, dev) \ | |
242 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) | |
6683ece3 | 243 | |
22bedad3 JP |
244 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
245 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) | |
18e225f2 | 246 | #define netdev_for_each_mc_addr(ha, dev) \ |
22bedad3 | 247 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
6683ece3 | 248 | |
d94d9fee | 249 | struct hh_cache { |
5b3dc2f3 | 250 | unsigned int hh_len; |
3644f0ce | 251 | seqlock_t hh_lock; |
1da177e4 LT |
252 | |
253 | /* cached hardware header; allow for machine alignment needs. */ | |
254 | #define HH_DATA_MOD 16 | |
255 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 256 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
257 | #define HH_DATA_ALIGN(__len) \ |
258 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
259 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
260 | }; | |
261 | ||
5e82b4b2 | 262 | /* Reserve HH_DATA_MOD byte-aligned hard_header_len, but at least that much. |
1da177e4 LT |
263 | * Alternative is: |
264 | * dev->hard_header_len ? (dev->hard_header_len + | |
265 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
266 | * | |
267 | * We could use other alignment values, but we must maintain the | |
268 | * relationship HH alignment <= LL alignment. | |
269 | */ | |
270 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 271 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 272 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 | 273 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 274 | |
3b04ddde SH |
275 | struct header_ops { |
276 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
277 | unsigned short type, const void *daddr, | |
95c96174 | 278 | const void *saddr, unsigned int len); |
3b04ddde | 279 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); |
e69dd336 | 280 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh, __be16 type); |
3b04ddde SH |
281 | void (*cache_update)(struct hh_cache *hh, |
282 | const struct net_device *dev, | |
283 | const unsigned char *haddr); | |
2793a23a | 284 | bool (*validate)(const char *ll_header, unsigned int len); |
e78b2915 | 285 | __be16 (*parse_protocol)(const struct sk_buff *skb); |
3b04ddde SH |
286 | }; |
287 | ||
1da177e4 | 288 | /* These flag bits are private to the generic network queueing |
5e82b4b2 | 289 | * layer; they may not be explicitly referenced by any other |
1da177e4 LT |
290 | * code. |
291 | */ | |
292 | ||
d94d9fee | 293 | enum netdev_state_t { |
1da177e4 LT |
294 | __LINK_STATE_START, |
295 | __LINK_STATE_PRESENT, | |
1da177e4 | 296 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
297 | __LINK_STATE_LINKWATCH_PENDING, |
298 | __LINK_STATE_DORMANT, | |
eec517cd | 299 | __LINK_STATE_TESTING, |
1da177e4 LT |
300 | }; |
301 | ||
302 | ||
6312fe77 LR |
303 | struct gro_list { |
304 | struct list_head list; | |
305 | int count; | |
306 | }; | |
307 | ||
bea3348e | 308 | /* |
d9f37d01 LR |
309 | * size of gro hash buckets, must less than bit number of |
310 | * napi_struct::gro_bitmask | |
bea3348e | 311 | */ |
07d78363 | 312 | #define GRO_HASH_BUCKETS 8 |
d9f37d01 LR |
313 | |
314 | /* | |
315 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
316 | */ | |
bea3348e SH |
317 | struct napi_struct { |
318 | /* The poll_list must only be managed by the entity which | |
319 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
320 | * whoever atomically sets that bit can add this napi_struct | |
5e82b4b2 | 321 | * to the per-CPU poll_list, and whoever clears that bit |
bea3348e SH |
322 | * can remove from the list right before clearing the bit. |
323 | */ | |
324 | struct list_head poll_list; | |
325 | ||
326 | unsigned long state; | |
327 | int weight; | |
6f8b12d6 | 328 | int defer_hard_irqs_count; |
d9f37d01 | 329 | unsigned long gro_bitmask; |
bea3348e SH |
330 | int (*poll)(struct napi_struct *, int); |
331 | #ifdef CONFIG_NETPOLL | |
bea3348e | 332 | int poll_owner; |
bea3348e | 333 | #endif |
5d38a079 | 334 | struct net_device *dev; |
6312fe77 | 335 | struct gro_list gro_hash[GRO_HASH_BUCKETS]; |
5d38a079 | 336 | struct sk_buff *skb; |
323ebb61 EC |
337 | struct list_head rx_list; /* Pending GRO_NORMAL skbs */ |
338 | int rx_count; /* length of rx_list */ | |
3b47d303 | 339 | struct hrtimer timer; |
404f7c9e | 340 | struct list_head dev_list; |
af12fa6e ET |
341 | struct hlist_node napi_hash_node; |
342 | unsigned int napi_id; | |
29863d41 | 343 | struct task_struct *thread; |
bea3348e SH |
344 | }; |
345 | ||
d94d9fee | 346 | enum { |
7fd3253a BT |
347 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
348 | NAPI_STATE_MISSED, /* reschedule a napi */ | |
349 | NAPI_STATE_DISABLE, /* Disable pending */ | |
350 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ | |
351 | NAPI_STATE_LISTED, /* NAPI added to system lists */ | |
352 | NAPI_STATE_NO_BUSY_POLL, /* Do not add in napi_hash, no busy polling */ | |
353 | NAPI_STATE_IN_BUSY_POLL, /* sk_busy_loop() owns this NAPI */ | |
354 | NAPI_STATE_PREFER_BUSY_POLL, /* prefer busy-polling over softirq processing*/ | |
29863d41 | 355 | NAPI_STATE_THREADED, /* The poll is performed inside its own thread*/ |
cb038357 | 356 | NAPI_STATE_SCHED_THREADED, /* Napi is currently scheduled in threaded mode */ |
217f6974 ED |
357 | }; |
358 | ||
359 | enum { | |
7fd3253a BT |
360 | NAPIF_STATE_SCHED = BIT(NAPI_STATE_SCHED), |
361 | NAPIF_STATE_MISSED = BIT(NAPI_STATE_MISSED), | |
362 | NAPIF_STATE_DISABLE = BIT(NAPI_STATE_DISABLE), | |
363 | NAPIF_STATE_NPSVC = BIT(NAPI_STATE_NPSVC), | |
364 | NAPIF_STATE_LISTED = BIT(NAPI_STATE_LISTED), | |
365 | NAPIF_STATE_NO_BUSY_POLL = BIT(NAPI_STATE_NO_BUSY_POLL), | |
366 | NAPIF_STATE_IN_BUSY_POLL = BIT(NAPI_STATE_IN_BUSY_POLL), | |
367 | NAPIF_STATE_PREFER_BUSY_POLL = BIT(NAPI_STATE_PREFER_BUSY_POLL), | |
29863d41 | 368 | NAPIF_STATE_THREADED = BIT(NAPI_STATE_THREADED), |
cb038357 | 369 | NAPIF_STATE_SCHED_THREADED = BIT(NAPI_STATE_SCHED_THREADED), |
bea3348e SH |
370 | }; |
371 | ||
5b252f0c | 372 | enum gro_result { |
d1c76af9 HX |
373 | GRO_MERGED, |
374 | GRO_MERGED_FREE, | |
375 | GRO_HELD, | |
376 | GRO_NORMAL, | |
25393d3f | 377 | GRO_CONSUMED, |
d1c76af9 | 378 | }; |
5b252f0c | 379 | typedef enum gro_result gro_result_t; |
d1c76af9 | 380 | |
8a4eb573 JP |
381 | /* |
382 | * enum rx_handler_result - Possible return values for rx_handlers. | |
383 | * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it | |
384 | * further. | |
385 | * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in | |
386 | * case skb->dev was changed by rx_handler. | |
387 | * @RX_HANDLER_EXACT: Force exact delivery, no wildcard. | |
5e82b4b2 | 388 | * @RX_HANDLER_PASS: Do nothing, pass the skb as if no rx_handler was called. |
8a4eb573 JP |
389 | * |
390 | * rx_handlers are functions called from inside __netif_receive_skb(), to do | |
391 | * special processing of the skb, prior to delivery to protocol handlers. | |
392 | * | |
393 | * Currently, a net_device can only have a single rx_handler registered. Trying | |
394 | * to register a second rx_handler will return -EBUSY. | |
395 | * | |
396 | * To register a rx_handler on a net_device, use netdev_rx_handler_register(). | |
397 | * To unregister a rx_handler on a net_device, use | |
398 | * netdev_rx_handler_unregister(). | |
399 | * | |
400 | * Upon return, rx_handler is expected to tell __netif_receive_skb() what to | |
401 | * do with the skb. | |
402 | * | |
5e82b4b2 | 403 | * If the rx_handler consumed the skb in some way, it should return |
8a4eb573 | 404 | * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for |
5e82b4b2 | 405 | * the skb to be delivered in some other way. |
8a4eb573 JP |
406 | * |
407 | * If the rx_handler changed skb->dev, to divert the skb to another | |
408 | * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the | |
409 | * new device will be called if it exists. | |
410 | * | |
5e82b4b2 | 411 | * If the rx_handler decides the skb should be ignored, it should return |
8a4eb573 | 412 | * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that |
d93cf068 | 413 | * are registered on exact device (ptype->dev == skb->dev). |
8a4eb573 | 414 | * |
5e82b4b2 | 415 | * If the rx_handler didn't change skb->dev, but wants the skb to be normally |
8a4eb573 JP |
416 | * delivered, it should return RX_HANDLER_PASS. |
417 | * | |
418 | * A device without a registered rx_handler will behave as if rx_handler | |
419 | * returned RX_HANDLER_PASS. | |
420 | */ | |
421 | ||
422 | enum rx_handler_result { | |
423 | RX_HANDLER_CONSUMED, | |
424 | RX_HANDLER_ANOTHER, | |
425 | RX_HANDLER_EXACT, | |
426 | RX_HANDLER_PASS, | |
427 | }; | |
428 | typedef enum rx_handler_result rx_handler_result_t; | |
429 | typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb); | |
ab95bfe0 | 430 | |
f629d208 | 431 | void __napi_schedule(struct napi_struct *n); |
bc9ad166 | 432 | void __napi_schedule_irqoff(struct napi_struct *n); |
bea3348e | 433 | |
4d29515f | 434 | static inline bool napi_disable_pending(struct napi_struct *n) |
a0a46196 DM |
435 | { |
436 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
437 | } | |
438 | ||
7fd3253a BT |
439 | static inline bool napi_prefer_busy_poll(struct napi_struct *n) |
440 | { | |
441 | return test_bit(NAPI_STATE_PREFER_BUSY_POLL, &n->state); | |
442 | } | |
443 | ||
39e6c820 | 444 | bool napi_schedule_prep(struct napi_struct *n); |
bea3348e SH |
445 | |
446 | /** | |
447 | * napi_schedule - schedule NAPI poll | |
5e82b4b2 | 448 | * @n: NAPI context |
bea3348e SH |
449 | * |
450 | * Schedule NAPI poll routine to be called if it is not already | |
451 | * running. | |
452 | */ | |
453 | static inline void napi_schedule(struct napi_struct *n) | |
454 | { | |
455 | if (napi_schedule_prep(n)) | |
456 | __napi_schedule(n); | |
457 | } | |
458 | ||
bc9ad166 ED |
459 | /** |
460 | * napi_schedule_irqoff - schedule NAPI poll | |
5e82b4b2 | 461 | * @n: NAPI context |
bc9ad166 ED |
462 | * |
463 | * Variant of napi_schedule(), assuming hard irqs are masked. | |
464 | */ | |
465 | static inline void napi_schedule_irqoff(struct napi_struct *n) | |
466 | { | |
467 | if (napi_schedule_prep(n)) | |
468 | __napi_schedule_irqoff(n); | |
469 | } | |
470 | ||
bfe13f54 | 471 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
4d29515f | 472 | static inline bool napi_reschedule(struct napi_struct *napi) |
bfe13f54 RD |
473 | { |
474 | if (napi_schedule_prep(napi)) { | |
475 | __napi_schedule(napi); | |
4d29515f | 476 | return true; |
bfe13f54 | 477 | } |
4d29515f | 478 | return false; |
bfe13f54 RD |
479 | } |
480 | ||
364b6055 | 481 | bool napi_complete_done(struct napi_struct *n, int work_done); |
bea3348e SH |
482 | /** |
483 | * napi_complete - NAPI processing complete | |
5e82b4b2 | 484 | * @n: NAPI context |
bea3348e SH |
485 | * |
486 | * Mark NAPI processing as complete. | |
3b47d303 | 487 | * Consider using napi_complete_done() instead. |
364b6055 | 488 | * Return false if device should avoid rearming interrupts. |
bea3348e | 489 | */ |
364b6055 | 490 | static inline bool napi_complete(struct napi_struct *n) |
3b47d303 ED |
491 | { |
492 | return napi_complete_done(n, 0); | |
493 | } | |
bea3348e | 494 | |
5fdd2f0e WW |
495 | int dev_set_threaded(struct net_device *dev, bool threaded); |
496 | ||
bea3348e SH |
497 | /** |
498 | * napi_disable - prevent NAPI from scheduling | |
5e82b4b2 | 499 | * @n: NAPI context |
bea3348e SH |
500 | * |
501 | * Stop NAPI from being scheduled on this context. | |
502 | * Waits till any outstanding processing completes. | |
503 | */ | |
3b47d303 | 504 | void napi_disable(struct napi_struct *n); |
bea3348e | 505 | |
29863d41 | 506 | void napi_enable(struct napi_struct *n); |
bea3348e | 507 | |
c264c3de SH |
508 | /** |
509 | * napi_synchronize - wait until NAPI is not running | |
5e82b4b2 | 510 | * @n: NAPI context |
c264c3de SH |
511 | * |
512 | * Wait until NAPI is done being scheduled on this context. | |
513 | * Waits till any outstanding processing completes but | |
514 | * does not disable future activations. | |
515 | */ | |
516 | static inline void napi_synchronize(const struct napi_struct *n) | |
517 | { | |
facc432f AB |
518 | if (IS_ENABLED(CONFIG_SMP)) |
519 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
520 | msleep(1); | |
521 | else | |
522 | barrier(); | |
c264c3de | 523 | } |
c264c3de | 524 | |
6c5c9581 MK |
525 | /** |
526 | * napi_if_scheduled_mark_missed - if napi is running, set the | |
527 | * NAPIF_STATE_MISSED | |
528 | * @n: NAPI context | |
529 | * | |
530 | * If napi is running, set the NAPIF_STATE_MISSED, and return true if | |
531 | * NAPI is scheduled. | |
532 | **/ | |
533 | static inline bool napi_if_scheduled_mark_missed(struct napi_struct *n) | |
534 | { | |
535 | unsigned long val, new; | |
536 | ||
537 | do { | |
538 | val = READ_ONCE(n->state); | |
539 | if (val & NAPIF_STATE_DISABLE) | |
540 | return true; | |
541 | ||
542 | if (!(val & NAPIF_STATE_SCHED)) | |
543 | return false; | |
544 | ||
545 | new = val | NAPIF_STATE_MISSED; | |
546 | } while (cmpxchg(&n->state, val, new) != val); | |
547 | ||
548 | return true; | |
549 | } | |
550 | ||
d94d9fee | 551 | enum netdev_queue_state_t { |
73466498 TH |
552 | __QUEUE_STATE_DRV_XOFF, |
553 | __QUEUE_STATE_STACK_XOFF, | |
c3f26a26 | 554 | __QUEUE_STATE_FROZEN, |
79d16385 | 555 | }; |
8e2f1a63 DB |
556 | |
557 | #define QUEUE_STATE_DRV_XOFF (1 << __QUEUE_STATE_DRV_XOFF) | |
558 | #define QUEUE_STATE_STACK_XOFF (1 << __QUEUE_STATE_STACK_XOFF) | |
559 | #define QUEUE_STATE_FROZEN (1 << __QUEUE_STATE_FROZEN) | |
560 | ||
561 | #define QUEUE_STATE_ANY_XOFF (QUEUE_STATE_DRV_XOFF | QUEUE_STATE_STACK_XOFF) | |
562 | #define QUEUE_STATE_ANY_XOFF_OR_FROZEN (QUEUE_STATE_ANY_XOFF | \ | |
563 | QUEUE_STATE_FROZEN) | |
564 | #define QUEUE_STATE_DRV_XOFF_OR_FROZEN (QUEUE_STATE_DRV_XOFF | \ | |
565 | QUEUE_STATE_FROZEN) | |
566 | ||
73466498 TH |
567 | /* |
568 | * __QUEUE_STATE_DRV_XOFF is used by drivers to stop the transmit queue. The | |
569 | * netif_tx_* functions below are used to manipulate this flag. The | |
570 | * __QUEUE_STATE_STACK_XOFF flag is used by the stack to stop the transmit | |
571 | * queue independently. The netif_xmit_*stopped functions below are called | |
572 | * to check if the queue has been stopped by the driver or stack (either | |
573 | * of the XOFF bits are set in the state). Drivers should not need to call | |
574 | * netif_xmit*stopped functions, they should only be using netif_tx_*. | |
575 | */ | |
79d16385 | 576 | |
bb949fbd | 577 | struct netdev_queue { |
6a321cb3 | 578 | /* |
5e82b4b2 | 579 | * read-mostly part |
6a321cb3 | 580 | */ |
bb949fbd | 581 | struct net_device *dev; |
46e5da40 | 582 | struct Qdisc __rcu *qdisc; |
b0e1e646 | 583 | struct Qdisc *qdisc_sleeping; |
ccf5ff69 | 584 | #ifdef CONFIG_SYSFS |
1d24eb48 TH |
585 | struct kobject kobj; |
586 | #endif | |
f2cd2d3e ED |
587 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
588 | int numa_node; | |
589 | #endif | |
c0ef079c FW |
590 | unsigned long tx_maxrate; |
591 | /* | |
592 | * Number of TX timeouts for this queue | |
593 | * (/sys/class/net/DEV/Q/trans_timeout) | |
594 | */ | |
595 | unsigned long trans_timeout; | |
ffcfe25b AD |
596 | |
597 | /* Subordinate device that the queue has been assigned to */ | |
598 | struct net_device *sb_dev; | |
661b8d1b | 599 | #ifdef CONFIG_XDP_SOCKETS |
1742b3d5 | 600 | struct xsk_buff_pool *pool; |
661b8d1b | 601 | #endif |
6a321cb3 | 602 | /* |
5e82b4b2 | 603 | * write-mostly part |
6a321cb3 ED |
604 | */ |
605 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
606 | int xmit_lock_owner; | |
9d21493b | 607 | /* |
9b36627a | 608 | * Time (in jiffies) of last Tx |
9d21493b ED |
609 | */ |
610 | unsigned long trans_start; | |
ccf5ff69 | 611 | |
114cf580 TH |
612 | unsigned long state; |
613 | ||
614 | #ifdef CONFIG_BQL | |
615 | struct dql dql; | |
616 | #endif | |
e8a0464c | 617 | } ____cacheline_aligned_in_smp; |
bb949fbd | 618 | |
79134e6c | 619 | extern int sysctl_fb_tunnels_only_for_init_net; |
856c395c | 620 | extern int sysctl_devconf_inherit_init_net; |
79134e6c | 621 | |
316cdaa1 MB |
622 | /* |
623 | * sysctl_fb_tunnels_only_for_init_net == 0 : For all netns | |
624 | * == 1 : For initns only | |
625 | * == 2 : For none. | |
626 | */ | |
79134e6c ED |
627 | static inline bool net_has_fallback_tunnels(const struct net *net) |
628 | { | |
3753d977 MB |
629 | return !IS_ENABLED(CONFIG_SYSCTL) || |
630 | !sysctl_fb_tunnels_only_for_init_net || | |
631 | (net == &init_net && sysctl_fb_tunnels_only_for_init_net == 1); | |
79134e6c ED |
632 | } |
633 | ||
f2cd2d3e ED |
634 | static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) |
635 | { | |
636 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
637 | return q->numa_node; | |
638 | #else | |
b236da69 | 639 | return NUMA_NO_NODE; |
f2cd2d3e ED |
640 | #endif |
641 | } | |
642 | ||
643 | static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node) | |
644 | { | |
645 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
646 | q->numa_node = node; | |
647 | #endif | |
648 | } | |
649 | ||
df334545 | 650 | #ifdef CONFIG_RPS |
0a9627f2 TH |
651 | /* |
652 | * This structure holds an RPS map which can be of variable length. The | |
653 | * map is an array of CPUs. | |
654 | */ | |
655 | struct rps_map { | |
656 | unsigned int len; | |
657 | struct rcu_head rcu; | |
bb4cf02d | 658 | u16 cpus[]; |
0a9627f2 | 659 | }; |
60b778ce | 660 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + ((_num) * sizeof(u16))) |
0a9627f2 | 661 | |
fec5e652 | 662 | /* |
c445477d BH |
663 | * The rps_dev_flow structure contains the mapping of a flow to a CPU, the |
664 | * tail pointer for that CPU's input queue at the time of last enqueue, and | |
665 | * a hardware filter index. | |
fec5e652 TH |
666 | */ |
667 | struct rps_dev_flow { | |
668 | u16 cpu; | |
c445477d | 669 | u16 filter; |
fec5e652 TH |
670 | unsigned int last_qtail; |
671 | }; | |
c445477d | 672 | #define RPS_NO_FILTER 0xffff |
fec5e652 TH |
673 | |
674 | /* | |
675 | * The rps_dev_flow_table structure contains a table of flow mappings. | |
676 | */ | |
677 | struct rps_dev_flow_table { | |
678 | unsigned int mask; | |
679 | struct rcu_head rcu; | |
bb4cf02d | 680 | struct rps_dev_flow flows[]; |
fec5e652 TH |
681 | }; |
682 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ | |
60b778ce | 683 | ((_num) * sizeof(struct rps_dev_flow))) |
fec5e652 TH |
684 | |
685 | /* | |
686 | * The rps_sock_flow_table contains mappings of flows to the last CPU | |
687 | * on which they were processed by the application (set in recvmsg). | |
5e82b4b2 BH |
688 | * Each entry is a 32bit value. Upper part is the high-order bits |
689 | * of flow hash, lower part is CPU number. | |
567e4b79 | 690 | * rps_cpu_mask is used to partition the space, depending on number of |
5e82b4b2 BH |
691 | * possible CPUs : rps_cpu_mask = roundup_pow_of_two(nr_cpu_ids) - 1 |
692 | * For example, if 64 CPUs are possible, rps_cpu_mask = 0x3f, | |
567e4b79 | 693 | * meaning we use 32-6=26 bits for the hash. |
fec5e652 TH |
694 | */ |
695 | struct rps_sock_flow_table { | |
567e4b79 | 696 | u32 mask; |
93c1af6c | 697 | |
bb4cf02d | 698 | u32 ents[] ____cacheline_aligned_in_smp; |
fec5e652 | 699 | }; |
567e4b79 | 700 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (offsetof(struct rps_sock_flow_table, ents[_num])) |
fec5e652 TH |
701 | |
702 | #define RPS_NO_CPU 0xffff | |
703 | ||
567e4b79 ED |
704 | extern u32 rps_cpu_mask; |
705 | extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; | |
706 | ||
fec5e652 TH |
707 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, |
708 | u32 hash) | |
709 | { | |
710 | if (table && hash) { | |
567e4b79 ED |
711 | unsigned int index = hash & table->mask; |
712 | u32 val = hash & ~rps_cpu_mask; | |
fec5e652 | 713 | |
5e82b4b2 | 714 | /* We only give a hint, preemption can change CPU under us */ |
567e4b79 | 715 | val |= raw_smp_processor_id(); |
fec5e652 | 716 | |
567e4b79 ED |
717 | if (table->ents[index] != val) |
718 | table->ents[index] = val; | |
fec5e652 TH |
719 | } |
720 | } | |
721 | ||
c445477d | 722 | #ifdef CONFIG_RFS_ACCEL |
f629d208 JP |
723 | bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, u32 flow_id, |
724 | u16 filter_id); | |
c445477d | 725 | #endif |
a953be53 | 726 | #endif /* CONFIG_RPS */ |
c445477d | 727 | |
0a9627f2 TH |
728 | /* This structure contains an instance of an RX queue. */ |
729 | struct netdev_rx_queue { | |
95d1d249 | 730 | struct xdp_rxq_info xdp_rxq; |
a953be53 | 731 | #ifdef CONFIG_RPS |
6e3f7faf ED |
732 | struct rps_map __rcu *rps_map; |
733 | struct rps_dev_flow_table __rcu *rps_flow_table; | |
a953be53 | 734 | #endif |
6e3f7faf | 735 | struct kobject kobj; |
fe822240 | 736 | struct net_device *dev; |
661b8d1b | 737 | #ifdef CONFIG_XDP_SOCKETS |
1742b3d5 | 738 | struct xsk_buff_pool *pool; |
661b8d1b | 739 | #endif |
0a9627f2 | 740 | } ____cacheline_aligned_in_smp; |
a953be53 MD |
741 | |
742 | /* | |
743 | * RX queue sysfs structures and functions. | |
744 | */ | |
745 | struct rx_queue_attribute { | |
746 | struct attribute attr; | |
718ad681 | 747 | ssize_t (*show)(struct netdev_rx_queue *queue, char *buf); |
a953be53 | 748 | ssize_t (*store)(struct netdev_rx_queue *queue, |
718ad681 | 749 | const char *buf, size_t len); |
a953be53 | 750 | }; |
d314774c | 751 | |
044ab86d AT |
752 | /* XPS map type and offset of the xps map within net_device->xps_maps[]. */ |
753 | enum xps_map_type { | |
754 | XPS_CPUS = 0, | |
755 | XPS_RXQS, | |
756 | XPS_MAPS_MAX, | |
757 | }; | |
758 | ||
bf264145 TH |
759 | #ifdef CONFIG_XPS |
760 | /* | |
761 | * This structure holds an XPS map which can be of variable length. The | |
762 | * map is an array of queues. | |
763 | */ | |
764 | struct xps_map { | |
765 | unsigned int len; | |
766 | unsigned int alloc_len; | |
767 | struct rcu_head rcu; | |
bb4cf02d | 768 | u16 queues[]; |
bf264145 | 769 | }; |
60b778ce | 770 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + ((_num) * sizeof(u16))) |
c59f419b HD |
771 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_ALIGN(offsetof(struct xps_map, queues[1])) \ |
772 | - sizeof(struct xps_map)) / sizeof(u16)) | |
bf264145 TH |
773 | |
774 | /* | |
775 | * This structure holds all XPS maps for device. Maps are indexed by CPU. | |
255c04a8 | 776 | * |
5478fcd0 AT |
777 | * We keep track of the number of cpus/rxqs used when the struct is allocated, |
778 | * in nr_ids. This will help not accessing out-of-bound memory. | |
779 | * | |
255c04a8 AT |
780 | * We keep track of the number of traffic classes used when the struct is |
781 | * allocated, in num_tc. This will be used to navigate the maps, to ensure we're | |
782 | * not crossing its upper bound, as the original dev->num_tc can be updated in | |
783 | * the meantime. | |
bf264145 TH |
784 | */ |
785 | struct xps_dev_maps { | |
786 | struct rcu_head rcu; | |
5478fcd0 | 787 | unsigned int nr_ids; |
255c04a8 | 788 | s16 num_tc; |
bb4cf02d | 789 | struct xps_map __rcu *attr_map[]; /* Either CPUs map or RXQs map */ |
bf264145 | 790 | }; |
80d19669 AN |
791 | |
792 | #define XPS_CPU_DEV_MAPS_SIZE(_tcs) (sizeof(struct xps_dev_maps) + \ | |
184c449f | 793 | (nr_cpu_ids * (_tcs) * sizeof(struct xps_map *))) |
80d19669 AN |
794 | |
795 | #define XPS_RXQ_DEV_MAPS_SIZE(_tcs, _rxqs) (sizeof(struct xps_dev_maps) +\ | |
796 | (_rxqs * (_tcs) * sizeof(struct xps_map *))) | |
797 | ||
bf264145 TH |
798 | #endif /* CONFIG_XPS */ |
799 | ||
4f57c087 JF |
800 | #define TC_MAX_QUEUE 16 |
801 | #define TC_BITMASK 15 | |
802 | /* HW offloaded queuing disciplines txq count and offset maps */ | |
803 | struct netdev_tc_txq { | |
804 | u16 count; | |
805 | u16 offset; | |
806 | }; | |
807 | ||
68bad94e NP |
808 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
809 | /* | |
810 | * This structure is to hold information about the device | |
811 | * configured to run FCoE protocol stack. | |
812 | */ | |
813 | struct netdev_fcoe_hbainfo { | |
814 | char manufacturer[64]; | |
815 | char serial_number[64]; | |
816 | char hardware_version[64]; | |
817 | char driver_version[64]; | |
818 | char optionrom_version[64]; | |
819 | char firmware_version[64]; | |
820 | char model[256]; | |
821 | char model_description[256]; | |
822 | }; | |
823 | #endif | |
824 | ||
02637fce | 825 | #define MAX_PHYS_ITEM_ID_LEN 32 |
66b52b0d | 826 | |
02637fce JP |
827 | /* This structure holds a unique identifier to identify some |
828 | * physical item (port for example) used by a netdevice. | |
66b52b0d | 829 | */ |
02637fce JP |
830 | struct netdev_phys_item_id { |
831 | unsigned char id[MAX_PHYS_ITEM_ID_LEN]; | |
66b52b0d JP |
832 | unsigned char id_len; |
833 | }; | |
834 | ||
d754f98b SF |
835 | static inline bool netdev_phys_item_id_same(struct netdev_phys_item_id *a, |
836 | struct netdev_phys_item_id *b) | |
837 | { | |
838 | return a->id_len == b->id_len && | |
839 | memcmp(a->id, b->id, a->id_len) == 0; | |
840 | } | |
841 | ||
99932d4f | 842 | typedef u16 (*select_queue_fallback_t)(struct net_device *dev, |
8ec56fc3 AD |
843 | struct sk_buff *skb, |
844 | struct net_device *sb_dev); | |
99932d4f | 845 | |
ddb94eaf PNA |
846 | enum net_device_path_type { |
847 | DEV_PATH_ETHERNET = 0, | |
e4417d69 | 848 | DEV_PATH_VLAN, |
ec9d16ba | 849 | DEV_PATH_BRIDGE, |
f6efc675 | 850 | DEV_PATH_PPPOE, |
0994d492 | 851 | DEV_PATH_DSA, |
ddb94eaf PNA |
852 | }; |
853 | ||
854 | struct net_device_path { | |
855 | enum net_device_path_type type; | |
856 | const struct net_device *dev; | |
e4417d69 PNA |
857 | union { |
858 | struct { | |
859 | u16 id; | |
860 | __be16 proto; | |
f6efc675 | 861 | u8 h_dest[ETH_ALEN]; |
e4417d69 | 862 | } encap; |
bcf2766b FF |
863 | struct { |
864 | enum { | |
865 | DEV_PATH_BR_VLAN_KEEP, | |
866 | DEV_PATH_BR_VLAN_TAG, | |
867 | DEV_PATH_BR_VLAN_UNTAG, | |
26267bf9 | 868 | DEV_PATH_BR_VLAN_UNTAG_HW, |
bcf2766b FF |
869 | } vlan_mode; |
870 | u16 vlan_id; | |
871 | __be16 vlan_proto; | |
872 | } bridge; | |
0994d492 FF |
873 | struct { |
874 | int port; | |
875 | u16 proto; | |
876 | } dsa; | |
e4417d69 | 877 | }; |
ddb94eaf PNA |
878 | }; |
879 | ||
880 | #define NET_DEVICE_PATH_STACK_MAX 5 | |
bcf2766b | 881 | #define NET_DEVICE_PATH_VLAN_MAX 2 |
ddb94eaf PNA |
882 | |
883 | struct net_device_path_stack { | |
884 | int num_paths; | |
885 | struct net_device_path path[NET_DEVICE_PATH_STACK_MAX]; | |
886 | }; | |
887 | ||
888 | struct net_device_path_ctx { | |
889 | const struct net_device *dev; | |
890 | const u8 *daddr; | |
bcf2766b FF |
891 | |
892 | int num_vlans; | |
893 | struct { | |
894 | u16 id; | |
895 | __be16 proto; | |
896 | } vlan[NET_DEVICE_PATH_VLAN_MAX]; | |
ddb94eaf PNA |
897 | }; |
898 | ||
2572ac53 | 899 | enum tc_setup_type { |
575ed7d3 | 900 | TC_SETUP_QDISC_MQPRIO, |
a1b7c5fd | 901 | TC_SETUP_CLSU32, |
5b33f488 | 902 | TC_SETUP_CLSFLOWER, |
ade9b658 | 903 | TC_SETUP_CLSMATCHALL, |
332ae8e2 | 904 | TC_SETUP_CLSBPF, |
8c4083b3 | 905 | TC_SETUP_BLOCK, |
8521db4c | 906 | TC_SETUP_QDISC_CBS, |
602f3baf | 907 | TC_SETUP_QDISC_RED, |
7fdb61b4 | 908 | TC_SETUP_QDISC_PRIO, |
f971b132 | 909 | TC_SETUP_QDISC_MQ, |
25db26a9 | 910 | TC_SETUP_QDISC_ETF, |
98b0e5f6 | 911 | TC_SETUP_ROOT_QDISC, |
890d8d23 | 912 | TC_SETUP_QDISC_GRED, |
9c66d156 | 913 | TC_SETUP_QDISC_TAPRIO, |
c29f74e0 | 914 | TC_SETUP_FT, |
d35eb52b | 915 | TC_SETUP_QDISC_ETS, |
ef6aadcc | 916 | TC_SETUP_QDISC_TBF, |
aaca9408 | 917 | TC_SETUP_QDISC_FIFO, |
d03b195b | 918 | TC_SETUP_QDISC_HTB, |
16e5cc64 JF |
919 | }; |
920 | ||
f4e63525 JK |
921 | /* These structures hold the attributes of bpf state that are being passed |
922 | * to the netdevice through the bpf op. | |
a7862b45 | 923 | */ |
f4e63525 | 924 | enum bpf_netdev_command { |
a7862b45 BB |
925 | /* Set or clear a bpf program used in the earliest stages of packet |
926 | * rx. The prog will have been loaded as BPF_PROG_TYPE_XDP. The callee | |
927 | * is responsible for calling bpf_prog_put on any old progs that are | |
928 | * stored. In case of error, the callee need not release the new prog | |
929 | * reference, but on success it takes ownership and must bpf_prog_put | |
930 | * when it is no longer used. | |
931 | */ | |
932 | XDP_SETUP_PROG, | |
ee5d032f | 933 | XDP_SETUP_PROG_HW, |
ab3f0063 | 934 | /* BPF program for offload callbacks, invoked at program load time. */ |
a3884572 JK |
935 | BPF_OFFLOAD_MAP_ALLOC, |
936 | BPF_OFFLOAD_MAP_FREE, | |
1742b3d5 | 937 | XDP_SETUP_XSK_POOL, |
a7862b45 BB |
938 | }; |
939 | ||
cae1927c | 940 | struct bpf_prog_offload_ops; |
ddf9f970 | 941 | struct netlink_ext_ack; |
74515c57 | 942 | struct xdp_umem; |
75ccae62 | 943 | struct xdp_dev_bulk_queue; |
aa8d3a71 | 944 | struct bpf_xdp_link; |
ddf9f970 | 945 | |
7f0a8382 AN |
946 | enum bpf_xdp_mode { |
947 | XDP_MODE_SKB = 0, | |
948 | XDP_MODE_DRV = 1, | |
949 | XDP_MODE_HW = 2, | |
950 | __MAX_XDP_MODE | |
951 | }; | |
952 | ||
953 | struct bpf_xdp_entity { | |
954 | struct bpf_prog *prog; | |
aa8d3a71 | 955 | struct bpf_xdp_link *link; |
7f0a8382 | 956 | }; |
ddf9f970 | 957 | |
f4e63525 JK |
958 | struct netdev_bpf { |
959 | enum bpf_netdev_command command; | |
a7862b45 BB |
960 | union { |
961 | /* XDP_SETUP_PROG */ | |
ddf9f970 | 962 | struct { |
32d60277 | 963 | u32 flags; |
ddf9f970 JK |
964 | struct bpf_prog *prog; |
965 | struct netlink_ext_ack *extack; | |
966 | }; | |
a3884572 JK |
967 | /* BPF_OFFLOAD_MAP_ALLOC, BPF_OFFLOAD_MAP_FREE */ |
968 | struct { | |
969 | struct bpf_offloaded_map *offmap; | |
970 | }; | |
1742b3d5 | 971 | /* XDP_SETUP_XSK_POOL */ |
74515c57 | 972 | struct { |
1742b3d5 | 973 | struct xsk_buff_pool *pool; |
f8ebfaf6 | 974 | u16 queue_id; |
74515c57 | 975 | } xsk; |
a7862b45 BB |
976 | }; |
977 | }; | |
16e5cc64 | 978 | |
9116e5e2 MK |
979 | /* Flags for ndo_xsk_wakeup. */ |
980 | #define XDP_WAKEUP_RX (1 << 0) | |
981 | #define XDP_WAKEUP_TX (1 << 1) | |
982 | ||
d77e38e6 SK |
983 | #ifdef CONFIG_XFRM_OFFLOAD |
984 | struct xfrmdev_ops { | |
985 | int (*xdo_dev_state_add) (struct xfrm_state *x); | |
986 | void (*xdo_dev_state_delete) (struct xfrm_state *x); | |
987 | void (*xdo_dev_state_free) (struct xfrm_state *x); | |
988 | bool (*xdo_dev_offload_ok) (struct sk_buff *skb, | |
989 | struct xfrm_state *x); | |
50bd870a | 990 | void (*xdo_dev_state_advance_esn) (struct xfrm_state *x); |
d77e38e6 SK |
991 | }; |
992 | #endif | |
993 | ||
6c557001 FW |
994 | struct dev_ifalias { |
995 | struct rcu_head rcuhead; | |
996 | char ifalias[]; | |
997 | }; | |
998 | ||
b473b0d2 | 999 | struct devlink; |
da68b4ad | 1000 | struct tlsdev_ops; |
b473b0d2 | 1001 | |
ff927412 JP |
1002 | struct netdev_name_node { |
1003 | struct hlist_node hlist; | |
36fbf1e5 | 1004 | struct list_head list; |
ff927412 JP |
1005 | struct net_device *dev; |
1006 | const char *name; | |
1007 | }; | |
1008 | ||
36fbf1e5 JP |
1009 | int netdev_name_node_alt_create(struct net_device *dev, const char *name); |
1010 | int netdev_name_node_alt_destroy(struct net_device *dev, const char *name); | |
1011 | ||
93642e14 JP |
1012 | struct netdev_net_notifier { |
1013 | struct list_head list; | |
1014 | struct notifier_block *nb; | |
1015 | }; | |
1016 | ||
d314774c SH |
1017 | /* |
1018 | * This structure defines the management hooks for network devices. | |
00829823 SH |
1019 | * The following hooks can be defined; unless noted otherwise, they are |
1020 | * optional and can be filled with a null pointer. | |
d314774c SH |
1021 | * |
1022 | * int (*ndo_init)(struct net_device *dev); | |
5e82b4b2 BH |
1023 | * This function is called once when a network device is registered. |
1024 | * The network device can use this for any late stage initialization | |
1025 | * or semantic validation. It can fail with an error code which will | |
1026 | * be propagated back to register_netdev. | |
d314774c SH |
1027 | * |
1028 | * void (*ndo_uninit)(struct net_device *dev); | |
1029 | * This function is called when device is unregistered or when registration | |
1030 | * fails. It is not called if init fails. | |
1031 | * | |
1032 | * int (*ndo_open)(struct net_device *dev); | |
5e82b4b2 | 1033 | * This function is called when a network device transitions to the up |
d314774c SH |
1034 | * state. |
1035 | * | |
1036 | * int (*ndo_stop)(struct net_device *dev); | |
5e82b4b2 | 1037 | * This function is called when a network device transitions to the down |
d314774c SH |
1038 | * state. |
1039 | * | |
dc1f8bf6 SH |
1040 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
1041 | * struct net_device *dev); | |
00829823 | 1042 | * Called when a packet needs to be transmitted. |
e79d8429 RR |
1043 | * Returns NETDEV_TX_OK. Can return NETDEV_TX_BUSY, but you should stop |
1044 | * the queue before that can happen; it's for obsolete devices and weird | |
1045 | * corner cases, but the stack really does a non-trivial amount | |
1046 | * of useless work if you return NETDEV_TX_BUSY. | |
5e82b4b2 | 1047 | * Required; cannot be NULL. |
00829823 | 1048 | * |
1a2a1444 DM |
1049 | * netdev_features_t (*ndo_features_check)(struct sk_buff *skb, |
1050 | * struct net_device *dev | |
1051 | * netdev_features_t features); | |
1052 | * Called by core transmit path to determine if device is capable of | |
1053 | * performing offload operations on a given packet. This is to give | |
1054 | * the device an opportunity to implement any restrictions that cannot | |
1055 | * be otherwise expressed by feature flags. The check is called with | |
1056 | * the set of features that the stack has calculated and it returns | |
1057 | * those the driver believes to be appropriate. | |
cdba756f | 1058 | * |
f663dd9a | 1059 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb, |
a350ecce | 1060 | * struct net_device *sb_dev); |
5e82b4b2 | 1061 | * Called to decide which queue to use when device supports multiple |
00829823 SH |
1062 | * transmit queues. |
1063 | * | |
d314774c SH |
1064 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
1065 | * This function is called to allow device receiver to make | |
5e82b4b2 | 1066 | * changes to configuration when multicast or promiscuous is enabled. |
d314774c SH |
1067 | * |
1068 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
1069 | * This function is called device changes address list filtering. | |
01789349 | 1070 | * If driver handles unicast address filtering, it should set |
5e82b4b2 | 1071 | * IFF_UNICAST_FLT in its priv_flags. |
d314774c SH |
1072 | * |
1073 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
1074 | * This function is called when the Media Access Control address | |
37b607c5 | 1075 | * needs to be changed. If this interface is not defined, the |
5e82b4b2 | 1076 | * MAC address can not be changed. |
d314774c SH |
1077 | * |
1078 | * int (*ndo_validate_addr)(struct net_device *dev); | |
1079 | * Test if Media Access Control address is valid for the device. | |
1080 | * | |
1081 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
3d9d00bd AB |
1082 | * Old-style ioctl entry point. This is used internally by the |
1083 | * appletalk and ieee802154 subsystems but is no longer called by | |
1084 | * the device ioctl handler. | |
1085 | * | |
1086 | * int (*ndo_siocbond)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
1087 | * Used by the bonding driver for its device specific ioctls: | |
1088 | * SIOCBONDENSLAVE, SIOCBONDRELEASE, SIOCBONDSETHWADDR, SIOCBONDCHANGEACTIVE, | |
1089 | * SIOCBONDSLAVEINFOQUERY, and SIOCBONDINFOQUERY | |
d314774c | 1090 | * |
a7605370 AB |
1091 | * * int (*ndo_eth_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); |
1092 | * Called for ethernet specific ioctls: SIOCGMIIPHY, SIOCGMIIREG, | |
1093 | * SIOCSMIIREG, SIOCSHWTSTAMP and SIOCGHWTSTAMP. | |
1094 | * | |
d314774c SH |
1095 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); |
1096 | * Used to set network devices bus interface parameters. This interface | |
5e82b4b2 | 1097 | * is retained for legacy reasons; new devices should use the bus |
d314774c SH |
1098 | * interface (PCI) for low level management. |
1099 | * | |
1100 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
1101 | * Called when a user wants to change the Maximum Transfer Unit | |
db46a0e1 | 1102 | * of a device. |
d314774c | 1103 | * |
0290bd29 | 1104 | * void (*ndo_tx_timeout)(struct net_device *dev, unsigned int txqueue); |
5e82b4b2 | 1105 | * Callback used when the transmitter has not made any progress |
d314774c SH |
1106 | * for dev->watchdog ticks. |
1107 | * | |
bc1f4470 | 1108 | * void (*ndo_get_stats64)(struct net_device *dev, |
1109 | * struct rtnl_link_stats64 *storage); | |
d308e38f | 1110 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
d314774c | 1111 | * Called when a user wants to get the network device usage |
be1f3c2c | 1112 | * statistics. Drivers must do one of the following: |
3cfde79c BH |
1113 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
1114 | * rtnl_link_stats64 structure passed by the caller. | |
82695d9b | 1115 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
be1f3c2c BH |
1116 | * (which should normally be dev->stats) and return a pointer to |
1117 | * it. The structure may be changed asynchronously only if each | |
1118 | * field is written atomically. | |
1119 | * 3. Update dev->stats asynchronously and atomically, and define | |
1120 | * neither operation. | |
d314774c | 1121 | * |
3df5b3c6 | 1122 | * bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id) |
2c9d85d4 NF |
1123 | * Return true if this device supports offload stats of this attr_id. |
1124 | * | |
1125 | * int (*ndo_get_offload_stats)(int attr_id, const struct net_device *dev, | |
1126 | * void *attr_data) | |
1127 | * Get statistics for offload operations by attr_id. Write it into the | |
1128 | * attr_data pointer. | |
1129 | * | |
5d632cb7 | 1130 | * int (*ndo_vlan_rx_add_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 1131 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 1132 | * VLAN id is registered. |
d314774c | 1133 | * |
5d632cb7 | 1134 | * int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, __be16 proto, u16 vid); |
5e82b4b2 | 1135 | * If device supports VLAN filtering this function is called when a |
80d5c368 | 1136 | * VLAN id is unregistered. |
d314774c SH |
1137 | * |
1138 | * void (*ndo_poll_controller)(struct net_device *dev); | |
95c26df8 WM |
1139 | * |
1140 | * SR-IOV management functions. | |
1141 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); | |
79aab093 MS |
1142 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, |
1143 | * u8 qos, __be16 proto); | |
ed616689 SC |
1144 | * int (*ndo_set_vf_rate)(struct net_device *dev, int vf, int min_tx_rate, |
1145 | * int max_tx_rate); | |
5f8444a3 | 1146 | * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting); |
dd461d6a | 1147 | * int (*ndo_set_vf_trust)(struct net_device *dev, int vf, bool setting); |
95c26df8 WM |
1148 | * int (*ndo_get_vf_config)(struct net_device *dev, |
1149 | * int vf, struct ifla_vf_info *ivf); | |
1d8faf48 | 1150 | * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state); |
57b61080 SF |
1151 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
1152 | * struct nlattr *port[]); | |
01a3d796 VZ |
1153 | * |
1154 | * Enable or disable the VF ability to query its RSS Redirection Table and | |
1155 | * Hash Key. This is needed since on some devices VF share this information | |
5e82b4b2 | 1156 | * with PF and querying it may introduce a theoretical security risk. |
01a3d796 | 1157 | * int (*ndo_set_vf_rss_query_en)(struct net_device *dev, int vf, bool setting); |
57b61080 | 1158 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); |
2572ac53 | 1159 | * int (*ndo_setup_tc)(struct net_device *dev, enum tc_setup_type type, |
de4784ca | 1160 | * void *type_data); |
6a4bc2b4 FF |
1161 | * Called to setup any 'tc' scheduler, classifier or action on @dev. |
1162 | * This is always called from the stack with the rtnl lock held and netif | |
1163 | * tx queues stopped. This allows the netdevice to perform queue | |
1164 | * management safely. | |
c445477d | 1165 | * |
e9bce845 YZ |
1166 | * Fiber Channel over Ethernet (FCoE) offload functions. |
1167 | * int (*ndo_fcoe_enable)(struct net_device *dev); | |
1168 | * Called when the FCoE protocol stack wants to start using LLD for FCoE | |
1169 | * so the underlying device can perform whatever needed configuration or | |
1170 | * initialization to support acceleration of FCoE traffic. | |
1171 | * | |
1172 | * int (*ndo_fcoe_disable)(struct net_device *dev); | |
1173 | * Called when the FCoE protocol stack wants to stop using LLD for FCoE | |
1174 | * so the underlying device can perform whatever needed clean-ups to | |
1175 | * stop supporting acceleration of FCoE traffic. | |
1176 | * | |
1177 | * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid, | |
1178 | * struct scatterlist *sgl, unsigned int sgc); | |
1179 | * Called when the FCoE Initiator wants to initialize an I/O that | |
1180 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
1181 | * perform necessary setup and returns 1 to indicate the device is set up | |
1182 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
1183 | * | |
1184 | * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); | |
1185 | * Called when the FCoE Initiator/Target is done with the DDPed I/O as | |
1186 | * indicated by the FC exchange id 'xid', so the underlying device can | |
1187 | * clean up and reuse resources for later DDP requests. | |
1188 | * | |
1189 | * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid, | |
1190 | * struct scatterlist *sgl, unsigned int sgc); | |
1191 | * Called when the FCoE Target wants to initialize an I/O that | |
1192 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
1193 | * perform necessary setup and returns 1 to indicate the device is set up | |
1194 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
1195 | * | |
68bad94e NP |
1196 | * int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1197 | * struct netdev_fcoe_hbainfo *hbainfo); | |
1198 | * Called when the FCoE Protocol stack wants information on the underlying | |
1199 | * device. This information is utilized by the FCoE protocol stack to | |
1200 | * register attributes with Fiber Channel management service as per the | |
1201 | * FC-GS Fabric Device Management Information(FDMI) specification. | |
1202 | * | |
e9bce845 YZ |
1203 | * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); |
1204 | * Called when the underlying device wants to override default World Wide | |
1205 | * Name (WWN) generation mechanism in FCoE protocol stack to pass its own | |
1206 | * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE | |
1207 | * protocol stack to use. | |
1208 | * | |
c445477d BH |
1209 | * RFS acceleration. |
1210 | * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, | |
1211 | * u16 rxq_index, u32 flow_id); | |
1212 | * Set hardware filter for RFS. rxq_index is the target queue index; | |
1213 | * flow_id is a flow ID to be passed to rps_may_expire_flow() later. | |
1214 | * Return the filter ID on success, or a negative error code. | |
fbaec0ea | 1215 | * |
8b98a70c | 1216 | * Slave management functions (for bridge, bonding, etc). |
fbaec0ea JP |
1217 | * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); |
1218 | * Called to make another netdev an underling. | |
1219 | * | |
1220 | * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); | |
1221 | * Called to release previously enslaved netdev. | |
5455c699 | 1222 | * |
cff9f12b MG |
1223 | * struct net_device *(*ndo_get_xmit_slave)(struct net_device *dev, |
1224 | * struct sk_buff *skb, | |
1225 | * bool all_slaves); | |
1226 | * Get the xmit slave of master device. If all_slaves is true, function | |
1227 | * assume all the slaves can transmit. | |
1228 | * | |
5455c699 | 1229 | * Feature/offload setting functions. |
1a2a1444 DM |
1230 | * netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1231 | * netdev_features_t features); | |
1232 | * Adjusts the requested feature flags according to device-specific | |
1233 | * constraints, and returns the resulting flags. Must not modify | |
1234 | * the device state. | |
1235 | * | |
c8f44aff | 1236 | * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); |
5455c699 MM |
1237 | * Called to update device configuration to new features. Passed |
1238 | * feature set might be less than what was returned by ndo_fix_features()). | |
1239 | * Must return >0 or -errno if it changed dev->features itself. | |
1240 | * | |
edc7d573 | 1241 | * int (*ndo_fdb_add)(struct ndmsg *ndm, struct nlattr *tb[], |
1242 | * struct net_device *dev, | |
87b0984e PM |
1243 | * const unsigned char *addr, u16 vid, u16 flags, |
1244 | * struct netlink_ext_ack *extack); | |
77162022 | 1245 | * Adds an FDB entry to dev for addr. |
1690be63 VY |
1246 | * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[], |
1247 | * struct net_device *dev, | |
f6f6424b | 1248 | * const unsigned char *addr, u16 vid) |
77162022 JF |
1249 | * Deletes the FDB entry from dev coresponding to addr. |
1250 | * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb, | |
5d5eacb3 | 1251 | * struct net_device *dev, struct net_device *filter_dev, |
d297653d | 1252 | * int *idx) |
77162022 JF |
1253 | * Used to add FDB entries to dump requests. Implementers should add |
1254 | * entries to skb and update idx with the number of entries. | |
e5a55a89 | 1255 | * |
ad41faa8 | 1256 | * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh, |
2fd527b7 | 1257 | * u16 flags, struct netlink_ext_ack *extack) |
e5a55a89 | 1258 | * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, |
46c264da ND |
1259 | * struct net_device *dev, u32 filter_mask, |
1260 | * int nlflags) | |
ad41faa8 ND |
1261 | * int (*ndo_bridge_dellink)(struct net_device *dev, struct nlmsghdr *nlh, |
1262 | * u16 flags); | |
4bf84c35 JP |
1263 | * |
1264 | * int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier); | |
1265 | * Called to change device carrier. Soft-devices (like dummy, team, etc) | |
1266 | * which do not represent real hardware may define this to allow their | |
1267 | * userspace components to manage their virtual carrier state. Devices | |
1268 | * that determine carrier state from physical hardware properties (eg | |
1269 | * network cables) or protocol-dependent mechanisms (eg | |
1270 | * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function. | |
66b52b0d JP |
1271 | * |
1272 | * int (*ndo_get_phys_port_id)(struct net_device *dev, | |
02637fce | 1273 | * struct netdev_phys_item_id *ppid); |
66b52b0d JP |
1274 | * Called to get ID of physical port of this device. If driver does |
1275 | * not implement this, it is assumed that the hw is not able to have | |
1276 | * multiple net devices on single physical port. | |
53cf5275 | 1277 | * |
d6abc596 FF |
1278 | * int (*ndo_get_port_parent_id)(struct net_device *dev, |
1279 | * struct netdev_phys_item_id *ppid) | |
1280 | * Called to get the parent ID of the physical port of this device. | |
1281 | * | |
a6cc0cfa JF |
1282 | * void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1283 | * struct net_device *dev) | |
1284 | * Called by upper layer devices to accelerate switching or other | |
1285 | * station functionality into hardware. 'pdev is the lowerdev | |
1286 | * to use for the offload and 'dev' is the net device that will | |
1287 | * back the offload. Returns a pointer to the private structure | |
1288 | * the upper layer will maintain. | |
1289 | * void (*ndo_dfwd_del_station)(struct net_device *pdev, void *priv) | |
1290 | * Called by upper layer device to delete the station created | |
1291 | * by 'ndo_dfwd_add_station'. 'pdev' is the net device backing | |
1292 | * the station and priv is the structure returned by the add | |
1293 | * operation. | |
822b3b2e JF |
1294 | * int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1295 | * int queue_index, u32 maxrate); | |
1296 | * Called when a user wants to set a max-rate limitation of specific | |
1297 | * TX queue. | |
a54acb3a ND |
1298 | * int (*ndo_get_iflink)(const struct net_device *dev); |
1299 | * Called to get the iflink value of this device. | |
d746d707 | 1300 | * void (*ndo_change_proto_down)(struct net_device *dev, |
5e82b4b2 | 1301 | * bool proto_down); |
d746d707 AK |
1302 | * This function is used to pass protocol port error state information |
1303 | * to the switch driver. The switch driver can react to the proto_down | |
1304 | * by doing a phys down on the associated switch port. | |
fc4099f1 PS |
1305 | * int (*ndo_fill_metadata_dst)(struct net_device *dev, struct sk_buff *skb); |
1306 | * This function is used to get egress tunnel information for given skb. | |
1307 | * This is useful for retrieving outer tunnel header parameters while | |
1308 | * sampling packet. | |
871b642a PA |
1309 | * void (*ndo_set_rx_headroom)(struct net_device *dev, int needed_headroom); |
1310 | * This function is used to specify the headroom that the skb must | |
1311 | * consider when allocation skb during packet reception. Setting | |
1312 | * appropriate rx headroom value allows avoiding skb head copy on | |
5e82b4b2 | 1313 | * forward. Setting a negative value resets the rx headroom to the |
871b642a | 1314 | * default value. |
f4e63525 | 1315 | * int (*ndo_bpf)(struct net_device *dev, struct netdev_bpf *bpf); |
a7862b45 | 1316 | * This function is used to set or query state related to XDP on the |
f4e63525 JK |
1317 | * netdevice and manage BPF offload. See definition of |
1318 | * enum bpf_netdev_command for details. | |
42b33468 JDB |
1319 | * int (*ndo_xdp_xmit)(struct net_device *dev, int n, struct xdp_frame **xdp, |
1320 | * u32 flags); | |
735fc405 JDB |
1321 | * This function is used to submit @n XDP packets for transmit on a |
1322 | * netdevice. Returns number of frames successfully transmitted, frames | |
1323 | * that got dropped are freed/returned via xdp_return_frame(). | |
1324 | * Returns negative number, means general error invoking ndo, meaning | |
1325 | * no frames were xmit'ed and core-caller will free all frames. | |
879af96f JM |
1326 | * struct net_device *(*ndo_xdp_get_xmit_slave)(struct net_device *dev, |
1327 | * struct xdp_buff *xdp); | |
1328 | * Get the xmit slave of master device based on the xdp_buff. | |
9116e5e2 MK |
1329 | * int (*ndo_xsk_wakeup)(struct net_device *dev, u32 queue_id, u32 flags); |
1330 | * This function is used to wake up the softirq, ksoftirqd or kthread | |
1331 | * responsible for sending and/or receiving packets on a specific | |
1332 | * queue id bound to an AF_XDP socket. The flags field specifies if | |
1333 | * only RX, only Tx, or both should be woken up using the flags | |
1334 | * XDP_WAKEUP_RX and XDP_WAKEUP_TX. | |
5dc37bb9 JP |
1335 | * struct devlink_port *(*ndo_get_devlink_port)(struct net_device *dev); |
1336 | * Get devlink port instance associated with a given netdev. | |
b473b0d2 JK |
1337 | * Called with a reference on the netdevice and devlink locks only, |
1338 | * rtnl_lock is not held. | |
607259a6 CH |
1339 | * int (*ndo_tunnel_ctl)(struct net_device *dev, struct ip_tunnel_parm *p, |
1340 | * int cmd); | |
1341 | * Add, change, delete or get information on an IPv4 tunnel. | |
9aa1206e DB |
1342 | * struct net_device *(*ndo_get_peer_dev)(struct net_device *dev); |
1343 | * If a device is paired with a peer device, return the peer instance. | |
1344 | * The caller must be under RCU read context. | |
ddb94eaf PNA |
1345 | * int (*ndo_fill_forward_path)(struct net_device_path_ctx *ctx, struct net_device_path *path); |
1346 | * Get the forwarding path to reach the real device from the HW destination address | |
d314774c SH |
1347 | */ |
1348 | struct net_device_ops { | |
1349 | int (*ndo_init)(struct net_device *dev); | |
1350 | void (*ndo_uninit)(struct net_device *dev); | |
1351 | int (*ndo_open)(struct net_device *dev); | |
1352 | int (*ndo_stop)(struct net_device *dev); | |
cdba756f ED |
1353 | netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
1354 | struct net_device *dev); | |
1355 | netdev_features_t (*ndo_features_check)(struct sk_buff *skb, | |
1356 | struct net_device *dev, | |
1357 | netdev_features_t features); | |
00829823 | 1358 | u16 (*ndo_select_queue)(struct net_device *dev, |
f663dd9a | 1359 | struct sk_buff *skb, |
a350ecce | 1360 | struct net_device *sb_dev); |
d314774c SH |
1361 | void (*ndo_change_rx_flags)(struct net_device *dev, |
1362 | int flags); | |
d314774c | 1363 | void (*ndo_set_rx_mode)(struct net_device *dev); |
d314774c SH |
1364 | int (*ndo_set_mac_address)(struct net_device *dev, |
1365 | void *addr); | |
d314774c | 1366 | int (*ndo_validate_addr)(struct net_device *dev); |
d314774c SH |
1367 | int (*ndo_do_ioctl)(struct net_device *dev, |
1368 | struct ifreq *ifr, int cmd); | |
a7605370 AB |
1369 | int (*ndo_eth_ioctl)(struct net_device *dev, |
1370 | struct ifreq *ifr, int cmd); | |
3d9d00bd AB |
1371 | int (*ndo_siocbond)(struct net_device *dev, |
1372 | struct ifreq *ifr, int cmd); | |
ad7eab2a AB |
1373 | int (*ndo_siocwandev)(struct net_device *dev, |
1374 | struct if_settings *ifs); | |
b9067f5d AB |
1375 | int (*ndo_siocdevprivate)(struct net_device *dev, |
1376 | struct ifreq *ifr, | |
1377 | void __user *data, int cmd); | |
d314774c SH |
1378 | int (*ndo_set_config)(struct net_device *dev, |
1379 | struct ifmap *map); | |
00829823 SH |
1380 | int (*ndo_change_mtu)(struct net_device *dev, |
1381 | int new_mtu); | |
1382 | int (*ndo_neigh_setup)(struct net_device *dev, | |
1383 | struct neigh_parms *); | |
0290bd29 MT |
1384 | void (*ndo_tx_timeout) (struct net_device *dev, |
1385 | unsigned int txqueue); | |
d314774c | 1386 | |
bc1f4470 | 1387 | void (*ndo_get_stats64)(struct net_device *dev, |
1388 | struct rtnl_link_stats64 *storage); | |
3df5b3c6 | 1389 | bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id); |
2c9d85d4 NF |
1390 | int (*ndo_get_offload_stats)(int attr_id, |
1391 | const struct net_device *dev, | |
1392 | void *attr_data); | |
d314774c SH |
1393 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
1394 | ||
8e586137 | 1395 | int (*ndo_vlan_rx_add_vid)(struct net_device *dev, |
80d5c368 | 1396 | __be16 proto, u16 vid); |
8e586137 | 1397 | int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, |
80d5c368 | 1398 | __be16 proto, u16 vid); |
d314774c | 1399 | #ifdef CONFIG_NET_POLL_CONTROLLER |
d314774c | 1400 | void (*ndo_poll_controller)(struct net_device *dev); |
4247e161 | 1401 | int (*ndo_netpoll_setup)(struct net_device *dev, |
a8779ec1 | 1402 | struct netpoll_info *info); |
0e34e931 | 1403 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
d314774c | 1404 | #endif |
95c26df8 WM |
1405 | int (*ndo_set_vf_mac)(struct net_device *dev, |
1406 | int queue, u8 *mac); | |
1407 | int (*ndo_set_vf_vlan)(struct net_device *dev, | |
79aab093 MS |
1408 | int queue, u16 vlan, |
1409 | u8 qos, __be16 proto); | |
ed616689 SC |
1410 | int (*ndo_set_vf_rate)(struct net_device *dev, |
1411 | int vf, int min_tx_rate, | |
1412 | int max_tx_rate); | |
5f8444a3 GR |
1413 | int (*ndo_set_vf_spoofchk)(struct net_device *dev, |
1414 | int vf, bool setting); | |
dd461d6a HS |
1415 | int (*ndo_set_vf_trust)(struct net_device *dev, |
1416 | int vf, bool setting); | |
95c26df8 WM |
1417 | int (*ndo_get_vf_config)(struct net_device *dev, |
1418 | int vf, | |
1419 | struct ifla_vf_info *ivf); | |
1d8faf48 RE |
1420 | int (*ndo_set_vf_link_state)(struct net_device *dev, |
1421 | int vf, int link_state); | |
3b766cd8 EBE |
1422 | int (*ndo_get_vf_stats)(struct net_device *dev, |
1423 | int vf, | |
1424 | struct ifla_vf_stats | |
1425 | *vf_stats); | |
57b61080 SF |
1426 | int (*ndo_set_vf_port)(struct net_device *dev, |
1427 | int vf, | |
1428 | struct nlattr *port[]); | |
1429 | int (*ndo_get_vf_port)(struct net_device *dev, | |
1430 | int vf, struct sk_buff *skb); | |
30aad417 DG |
1431 | int (*ndo_get_vf_guid)(struct net_device *dev, |
1432 | int vf, | |
1433 | struct ifla_vf_guid *node_guid, | |
1434 | struct ifla_vf_guid *port_guid); | |
cc8e27cc EC |
1435 | int (*ndo_set_vf_guid)(struct net_device *dev, |
1436 | int vf, u64 guid, | |
1437 | int guid_type); | |
01a3d796 VZ |
1438 | int (*ndo_set_vf_rss_query_en)( |
1439 | struct net_device *dev, | |
1440 | int vf, bool setting); | |
16e5cc64 | 1441 | int (*ndo_setup_tc)(struct net_device *dev, |
2572ac53 | 1442 | enum tc_setup_type type, |
de4784ca | 1443 | void *type_data); |
d11ead75 | 1444 | #if IS_ENABLED(CONFIG_FCOE) |
cb454399 YZ |
1445 | int (*ndo_fcoe_enable)(struct net_device *dev); |
1446 | int (*ndo_fcoe_disable)(struct net_device *dev); | |
4d288d57 YZ |
1447 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
1448 | u16 xid, | |
1449 | struct scatterlist *sgl, | |
1450 | unsigned int sgc); | |
1451 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
1452 | u16 xid); | |
6247e086 YZ |
1453 | int (*ndo_fcoe_ddp_target)(struct net_device *dev, |
1454 | u16 xid, | |
1455 | struct scatterlist *sgl, | |
1456 | unsigned int sgc); | |
68bad94e NP |
1457 | int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
1458 | struct netdev_fcoe_hbainfo *hbainfo); | |
3c9c36bc BPG |
1459 | #endif |
1460 | ||
d11ead75 | 1461 | #if IS_ENABLED(CONFIG_LIBFCOE) |
df5c7945 YZ |
1462 | #define NETDEV_FCOE_WWNN 0 |
1463 | #define NETDEV_FCOE_WWPN 1 | |
1464 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, | |
1465 | u64 *wwn, int type); | |
4d288d57 | 1466 | #endif |
3c9c36bc | 1467 | |
c445477d BH |
1468 | #ifdef CONFIG_RFS_ACCEL |
1469 | int (*ndo_rx_flow_steer)(struct net_device *dev, | |
1470 | const struct sk_buff *skb, | |
1471 | u16 rxq_index, | |
1472 | u32 flow_id); | |
1473 | #endif | |
fbaec0ea | 1474 | int (*ndo_add_slave)(struct net_device *dev, |
33eaf2a6 DA |
1475 | struct net_device *slave_dev, |
1476 | struct netlink_ext_ack *extack); | |
fbaec0ea JP |
1477 | int (*ndo_del_slave)(struct net_device *dev, |
1478 | struct net_device *slave_dev); | |
cff9f12b MG |
1479 | struct net_device* (*ndo_get_xmit_slave)(struct net_device *dev, |
1480 | struct sk_buff *skb, | |
1481 | bool all_slaves); | |
719a402c TT |
1482 | struct net_device* (*ndo_sk_get_lower_dev)(struct net_device *dev, |
1483 | struct sock *sk); | |
c8f44aff MM |
1484 | netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
1485 | netdev_features_t features); | |
5455c699 | 1486 | int (*ndo_set_features)(struct net_device *dev, |
c8f44aff | 1487 | netdev_features_t features); |
503eebc2 JP |
1488 | int (*ndo_neigh_construct)(struct net_device *dev, |
1489 | struct neighbour *n); | |
1490 | void (*ndo_neigh_destroy)(struct net_device *dev, | |
1491 | struct neighbour *n); | |
77162022 JF |
1492 | |
1493 | int (*ndo_fdb_add)(struct ndmsg *ndm, | |
edc7d573 | 1494 | struct nlattr *tb[], |
77162022 | 1495 | struct net_device *dev, |
6b6e2725 | 1496 | const unsigned char *addr, |
f6f6424b | 1497 | u16 vid, |
87b0984e PM |
1498 | u16 flags, |
1499 | struct netlink_ext_ack *extack); | |
77162022 | 1500 | int (*ndo_fdb_del)(struct ndmsg *ndm, |
1690be63 | 1501 | struct nlattr *tb[], |
77162022 | 1502 | struct net_device *dev, |
f6f6424b JP |
1503 | const unsigned char *addr, |
1504 | u16 vid); | |
77162022 JF |
1505 | int (*ndo_fdb_dump)(struct sk_buff *skb, |
1506 | struct netlink_callback *cb, | |
1507 | struct net_device *dev, | |
5d5eacb3 | 1508 | struct net_device *filter_dev, |
d297653d | 1509 | int *idx); |
5b2f94b2 RP |
1510 | int (*ndo_fdb_get)(struct sk_buff *skb, |
1511 | struct nlattr *tb[], | |
1512 | struct net_device *dev, | |
1513 | const unsigned char *addr, | |
1514 | u16 vid, u32 portid, u32 seq, | |
1515 | struct netlink_ext_ack *extack); | |
e5a55a89 | 1516 | int (*ndo_bridge_setlink)(struct net_device *dev, |
add511b3 | 1517 | struct nlmsghdr *nlh, |
2fd527b7 PM |
1518 | u16 flags, |
1519 | struct netlink_ext_ack *extack); | |
e5a55a89 JF |
1520 | int (*ndo_bridge_getlink)(struct sk_buff *skb, |
1521 | u32 pid, u32 seq, | |
6cbdceeb | 1522 | struct net_device *dev, |
46c264da ND |
1523 | u32 filter_mask, |
1524 | int nlflags); | |
407af329 | 1525 | int (*ndo_bridge_dellink)(struct net_device *dev, |
add511b3 RP |
1526 | struct nlmsghdr *nlh, |
1527 | u16 flags); | |
4bf84c35 JP |
1528 | int (*ndo_change_carrier)(struct net_device *dev, |
1529 | bool new_carrier); | |
66b52b0d | 1530 | int (*ndo_get_phys_port_id)(struct net_device *dev, |
02637fce | 1531 | struct netdev_phys_item_id *ppid); |
d6abc596 FF |
1532 | int (*ndo_get_port_parent_id)(struct net_device *dev, |
1533 | struct netdev_phys_item_id *ppid); | |
db24a904 DA |
1534 | int (*ndo_get_phys_port_name)(struct net_device *dev, |
1535 | char *name, size_t len); | |
a6cc0cfa JF |
1536 | void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
1537 | struct net_device *dev); | |
1538 | void (*ndo_dfwd_del_station)(struct net_device *pdev, | |
1539 | void *priv); | |
1540 | ||
822b3b2e JF |
1541 | int (*ndo_set_tx_maxrate)(struct net_device *dev, |
1542 | int queue_index, | |
1543 | u32 maxrate); | |
a54acb3a | 1544 | int (*ndo_get_iflink)(const struct net_device *dev); |
d746d707 AK |
1545 | int (*ndo_change_proto_down)(struct net_device *dev, |
1546 | bool proto_down); | |
fc4099f1 PS |
1547 | int (*ndo_fill_metadata_dst)(struct net_device *dev, |
1548 | struct sk_buff *skb); | |
871b642a PA |
1549 | void (*ndo_set_rx_headroom)(struct net_device *dev, |
1550 | int needed_headroom); | |
f4e63525 JK |
1551 | int (*ndo_bpf)(struct net_device *dev, |
1552 | struct netdev_bpf *bpf); | |
735fc405 | 1553 | int (*ndo_xdp_xmit)(struct net_device *dev, int n, |
42b33468 JDB |
1554 | struct xdp_frame **xdp, |
1555 | u32 flags); | |
879af96f JM |
1556 | struct net_device * (*ndo_xdp_get_xmit_slave)(struct net_device *dev, |
1557 | struct xdp_buff *xdp); | |
9116e5e2 MK |
1558 | int (*ndo_xsk_wakeup)(struct net_device *dev, |
1559 | u32 queue_id, u32 flags); | |
5dc37bb9 | 1560 | struct devlink_port * (*ndo_get_devlink_port)(struct net_device *dev); |
607259a6 CH |
1561 | int (*ndo_tunnel_ctl)(struct net_device *dev, |
1562 | struct ip_tunnel_parm *p, int cmd); | |
9aa1206e | 1563 | struct net_device * (*ndo_get_peer_dev)(struct net_device *dev); |
ddb94eaf PNA |
1564 | int (*ndo_fill_forward_path)(struct net_device_path_ctx *ctx, |
1565 | struct net_device_path *path); | |
d314774c SH |
1566 | }; |
1567 | ||
7aa98047 | 1568 | /** |
270f3385 | 1569 | * enum netdev_priv_flags - &struct net_device priv_flags |
7aa98047 LR |
1570 | * |
1571 | * These are the &struct net_device, they are only set internally | |
1572 | * by drivers and used in the kernel. These flags are invisible to | |
5e82b4b2 | 1573 | * userspace; this means that the order of these flags can change |
7aa98047 LR |
1574 | * during any kernel release. |
1575 | * | |
1576 | * You should have a pretty good reason to be extending these flags. | |
1577 | * | |
1578 | * @IFF_802_1Q_VLAN: 802.1Q VLAN device | |
1579 | * @IFF_EBRIDGE: Ethernet bridging device | |
7aa98047 | 1580 | * @IFF_BONDING: bonding master or slave |
7aa98047 | 1581 | * @IFF_ISATAP: ISATAP interface (RFC4214) |
7aa98047 LR |
1582 | * @IFF_WAN_HDLC: WAN HDLC device |
1583 | * @IFF_XMIT_DST_RELEASE: dev_hard_start_xmit() is allowed to | |
1584 | * release skb->dst | |
1585 | * @IFF_DONT_BRIDGE: disallow bridging this ether dev | |
1586 | * @IFF_DISABLE_NETPOLL: disable netpoll at run-time | |
1587 | * @IFF_MACVLAN_PORT: device used as macvlan port | |
1588 | * @IFF_BRIDGE_PORT: device used as bridge port | |
1589 | * @IFF_OVS_DATAPATH: device used as Open vSwitch datapath port | |
1590 | * @IFF_TX_SKB_SHARING: The interface supports sharing skbs on transmit | |
1591 | * @IFF_UNICAST_FLT: Supports unicast filtering | |
1592 | * @IFF_TEAM_PORT: device used as team port | |
1593 | * @IFF_SUPP_NOFCS: device supports sending custom FCS | |
1594 | * @IFF_LIVE_ADDR_CHANGE: device supports hardware address | |
1595 | * change when it's running | |
1596 | * @IFF_MACVLAN: Macvlan device | |
6d0e24cd LB |
1597 | * @IFF_XMIT_DST_RELEASE_PERM: IFF_XMIT_DST_RELEASE not taking into account |
1598 | * underlying stacked devices | |
007979ea | 1599 | * @IFF_L3MDEV_MASTER: device is an L3 master device |
fa8187c9 | 1600 | * @IFF_NO_QUEUE: device can run without qdisc attached |
35d4e172 | 1601 | * @IFF_OPENVSWITCH: device is a Open vSwitch master |
fee6d4c7 | 1602 | * @IFF_L3MDEV_SLAVE: device is enslaved to an L3 master device |
c981e421 | 1603 | * @IFF_TEAM: device is a team device |
d4ab4286 | 1604 | * @IFF_RXFH_CONFIGURED: device has had Rx Flow indirection table configured |
871b642a PA |
1605 | * @IFF_PHONY_HEADROOM: the headroom value is controlled by an external |
1606 | * entity (i.e. the master device for bridged veth) | |
3c175784 | 1607 | * @IFF_MACSEC: device is a MACsec device |
f5426250 | 1608 | * @IFF_NO_RX_HANDLER: device doesn't support the rx_handler hook |
30c8bd5a SS |
1609 | * @IFF_FAILOVER: device is a failover master device |
1610 | * @IFF_FAILOVER_SLAVE: device is lower dev of a failover master device | |
d5256083 | 1611 | * @IFF_L3MDEV_RX_HANDLER: only invoke the rx handler of L3 master device |
8065a779 | 1612 | * @IFF_LIVE_RENAME_OK: rename is allowed while device is up and running |
c2ff53d8 XZ |
1613 | * @IFF_TX_SKB_NO_LINEAR: device/driver is capable of xmitting frames with |
1614 | * skb_headlen(skb) == 0 (data starts from frag0) | |
7aa98047 LR |
1615 | */ |
1616 | enum netdev_priv_flags { | |
1617 | IFF_802_1Q_VLAN = 1<<0, | |
1618 | IFF_EBRIDGE = 1<<1, | |
0dc1549b JP |
1619 | IFF_BONDING = 1<<2, |
1620 | IFF_ISATAP = 1<<3, | |
1621 | IFF_WAN_HDLC = 1<<4, | |
1622 | IFF_XMIT_DST_RELEASE = 1<<5, | |
1623 | IFF_DONT_BRIDGE = 1<<6, | |
1624 | IFF_DISABLE_NETPOLL = 1<<7, | |
1625 | IFF_MACVLAN_PORT = 1<<8, | |
1626 | IFF_BRIDGE_PORT = 1<<9, | |
1627 | IFF_OVS_DATAPATH = 1<<10, | |
1628 | IFF_TX_SKB_SHARING = 1<<11, | |
1629 | IFF_UNICAST_FLT = 1<<12, | |
1630 | IFF_TEAM_PORT = 1<<13, | |
1631 | IFF_SUPP_NOFCS = 1<<14, | |
1632 | IFF_LIVE_ADDR_CHANGE = 1<<15, | |
1633 | IFF_MACVLAN = 1<<16, | |
1634 | IFF_XMIT_DST_RELEASE_PERM = 1<<17, | |
1ec54cb4 PA |
1635 | IFF_L3MDEV_MASTER = 1<<18, |
1636 | IFF_NO_QUEUE = 1<<19, | |
1637 | IFF_OPENVSWITCH = 1<<20, | |
1638 | IFF_L3MDEV_SLAVE = 1<<21, | |
1639 | IFF_TEAM = 1<<22, | |
1640 | IFF_RXFH_CONFIGURED = 1<<23, | |
1641 | IFF_PHONY_HEADROOM = 1<<24, | |
1642 | IFF_MACSEC = 1<<25, | |
f5426250 | 1643 | IFF_NO_RX_HANDLER = 1<<26, |
30c8bd5a SS |
1644 | IFF_FAILOVER = 1<<27, |
1645 | IFF_FAILOVER_SLAVE = 1<<28, | |
d5256083 | 1646 | IFF_L3MDEV_RX_HANDLER = 1<<29, |
8065a779 | 1647 | IFF_LIVE_RENAME_OK = 1<<30, |
c2ff53d8 | 1648 | IFF_TX_SKB_NO_LINEAR = 1<<31, |
7aa98047 LR |
1649 | }; |
1650 | ||
1651 | #define IFF_802_1Q_VLAN IFF_802_1Q_VLAN | |
1652 | #define IFF_EBRIDGE IFF_EBRIDGE | |
7aa98047 | 1653 | #define IFF_BONDING IFF_BONDING |
7aa98047 | 1654 | #define IFF_ISATAP IFF_ISATAP |
7aa98047 LR |
1655 | #define IFF_WAN_HDLC IFF_WAN_HDLC |
1656 | #define IFF_XMIT_DST_RELEASE IFF_XMIT_DST_RELEASE | |
1657 | #define IFF_DONT_BRIDGE IFF_DONT_BRIDGE | |
1658 | #define IFF_DISABLE_NETPOLL IFF_DISABLE_NETPOLL | |
1659 | #define IFF_MACVLAN_PORT IFF_MACVLAN_PORT | |
1660 | #define IFF_BRIDGE_PORT IFF_BRIDGE_PORT | |
1661 | #define IFF_OVS_DATAPATH IFF_OVS_DATAPATH | |
1662 | #define IFF_TX_SKB_SHARING IFF_TX_SKB_SHARING | |
1663 | #define IFF_UNICAST_FLT IFF_UNICAST_FLT | |
1664 | #define IFF_TEAM_PORT IFF_TEAM_PORT | |
1665 | #define IFF_SUPP_NOFCS IFF_SUPP_NOFCS | |
1666 | #define IFF_LIVE_ADDR_CHANGE IFF_LIVE_ADDR_CHANGE | |
1667 | #define IFF_MACVLAN IFF_MACVLAN | |
02875878 | 1668 | #define IFF_XMIT_DST_RELEASE_PERM IFF_XMIT_DST_RELEASE_PERM |
007979ea | 1669 | #define IFF_L3MDEV_MASTER IFF_L3MDEV_MASTER |
fa8187c9 | 1670 | #define IFF_NO_QUEUE IFF_NO_QUEUE |
35d4e172 | 1671 | #define IFF_OPENVSWITCH IFF_OPENVSWITCH |
8f25348b | 1672 | #define IFF_L3MDEV_SLAVE IFF_L3MDEV_SLAVE |
c981e421 | 1673 | #define IFF_TEAM IFF_TEAM |
d4ab4286 | 1674 | #define IFF_RXFH_CONFIGURED IFF_RXFH_CONFIGURED |
2463e073 | 1675 | #define IFF_PHONY_HEADROOM IFF_PHONY_HEADROOM |
3c175784 | 1676 | #define IFF_MACSEC IFF_MACSEC |
f5426250 | 1677 | #define IFF_NO_RX_HANDLER IFF_NO_RX_HANDLER |
30c8bd5a SS |
1678 | #define IFF_FAILOVER IFF_FAILOVER |
1679 | #define IFF_FAILOVER_SLAVE IFF_FAILOVER_SLAVE | |
d5256083 | 1680 | #define IFF_L3MDEV_RX_HANDLER IFF_L3MDEV_RX_HANDLER |
8065a779 | 1681 | #define IFF_LIVE_RENAME_OK IFF_LIVE_RENAME_OK |
c2ff53d8 | 1682 | #define IFF_TX_SKB_NO_LINEAR IFF_TX_SKB_NO_LINEAR |
7aa98047 | 1683 | |
4e096a18 OR |
1684 | /* Specifies the type of the struct net_device::ml_priv pointer */ |
1685 | enum netdev_ml_priv_type { | |
1686 | ML_PRIV_NONE, | |
1687 | ML_PRIV_CAN, | |
1688 | }; | |
1689 | ||
536721b1 KK |
1690 | /** |
1691 | * struct net_device - The DEVICE structure. | |
d651983d MCC |
1692 | * |
1693 | * Actually, this whole structure is a big mistake. It mixes I/O | |
1694 | * data with strictly "high-level" data, and it has to know about | |
1695 | * almost every data structure used in the INET module. | |
536721b1 KK |
1696 | * |
1697 | * @name: This is the first field of the "visible" part of this structure | |
1698 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
d651983d | 1699 | * of the interface. |
536721b1 | 1700 | * |
ff927412 | 1701 | * @name_node: Name hashlist node |
536721b1 KK |
1702 | * @ifalias: SNMP alias |
1703 | * @mem_end: Shared memory end | |
1704 | * @mem_start: Shared memory start | |
1705 | * @base_addr: Device I/O address | |
1706 | * @irq: Device IRQ number | |
1707 | * | |
1708 | * @state: Generic network queuing layer state, see netdev_state_t | |
1709 | * @dev_list: The global list of network devices | |
5e82b4b2 BH |
1710 | * @napi_list: List entry used for polling NAPI devices |
1711 | * @unreg_list: List entry when we are unregistering the | |
1712 | * device; see the function unregister_netdev | |
1713 | * @close_list: List entry used when we are closing the device | |
62d885fe BP |
1714 | * @ptype_all: Device-specific packet handlers for all protocols |
1715 | * @ptype_specific: Device-specific, protocol-specific packet handlers | |
536721b1 KK |
1716 | * |
1717 | * @adj_list: Directly linked devices, like slaves for bonding | |
536721b1 KK |
1718 | * @features: Currently active device features |
1719 | * @hw_features: User-changeable features | |
1720 | * | |
1721 | * @wanted_features: User-requested features | |
1722 | * @vlan_features: Mask of features inheritable by VLAN devices | |
1723 | * | |
1724 | * @hw_enc_features: Mask of features inherited by encapsulating devices | |
1725 | * This field indicates what encapsulation | |
1726 | * offloads the hardware is capable of doing, | |
1727 | * and drivers will need to set them appropriately. | |
1728 | * | |
1729 | * @mpls_features: Mask of features inheritable by MPLS | |
a1fa83bd | 1730 | * @gso_partial_features: value(s) from NETIF_F_GSO\* |
536721b1 KK |
1731 | * |
1732 | * @ifindex: interface index | |
5e82b4b2 | 1733 | * @group: The group the device belongs to |
536721b1 KK |
1734 | * |
1735 | * @stats: Statistics struct, which was left as a legacy, use | |
1736 | * rtnl_link_stats64 instead | |
1737 | * | |
1738 | * @rx_dropped: Dropped packets by core network, | |
1739 | * do not use this in drivers | |
1740 | * @tx_dropped: Dropped packets by core network, | |
1741 | * do not use this in drivers | |
6e7333d3 JW |
1742 | * @rx_nohandler: nohandler dropped packets by core network on |
1743 | * inactive devices, do not use this in drivers | |
9e55e5d3 FF |
1744 | * @carrier_up_count: Number of times the carrier has been up |
1745 | * @carrier_down_count: Number of times the carrier has been down | |
536721b1 | 1746 | * |
536721b1 KK |
1747 | * @wireless_handlers: List of functions to handle Wireless Extensions, |
1748 | * instead of ioctl, | |
1749 | * see <net/iw_handler.h> for details. | |
1750 | * @wireless_data: Instance data managed by the core of wireless extensions | |
1751 | * | |
1752 | * @netdev_ops: Includes several pointers to callbacks, | |
1753 | * if one wants to override the ndo_*() functions | |
1754 | * @ethtool_ops: Management operations | |
a1fa83bd | 1755 | * @l3mdev_ops: Layer 3 master device operations |
f997c55c AA |
1756 | * @ndisc_ops: Includes callbacks for different IPv6 neighbour |
1757 | * discovery handling. Necessary for e.g. 6LoWPAN. | |
a1fa83bd RD |
1758 | * @xfrmdev_ops: Transformation offload operations |
1759 | * @tlsdev_ops: Transport Layer Security offload operations | |
d476059e | 1760 | * @header_ops: Includes callbacks for creating,parsing,caching,etc |
536721b1 KK |
1761 | * of Layer 2 headers. |
1762 | * | |
1763 | * @flags: Interface flags (a la BSD) | |
1764 | * @priv_flags: Like 'flags' but invisible to userspace, | |
1765 | * see if.h for the definitions | |
1766 | * @gflags: Global flags ( kept as legacy ) | |
1767 | * @padded: How much padding added by alloc_netdev() | |
1768 | * @operstate: RFC2863 operstate | |
1769 | * @link_mode: Mapping policy to operstate | |
1770 | * @if_port: Selectable AUI, TP, ... | |
1771 | * @dma: DMA channel | |
1772 | * @mtu: Interface MTU value | |
61e84623 JW |
1773 | * @min_mtu: Interface Minimum MTU value |
1774 | * @max_mtu: Interface Maximum MTU value | |
536721b1 | 1775 | * @type: Interface hardware type |
2793a23a | 1776 | * @hard_header_len: Maximum hardware header length. |
217e6fa2 | 1777 | * @min_header_len: Minimum hardware header length |
536721b1 KK |
1778 | * |
1779 | * @needed_headroom: Extra headroom the hardware may need, but not in all | |
1780 | * cases can this be guaranteed | |
1781 | * @needed_tailroom: Extra tailroom the hardware may need, but not in all | |
1782 | * cases can this be guaranteed. Some cases also use | |
1783 | * LL_MAX_HEADER instead to allocate the skb | |
1784 | * | |
1785 | * interface address info: | |
1786 | * | |
1787 | * @perm_addr: Permanent hw address | |
1788 | * @addr_assign_type: Hw address assignment type | |
1789 | * @addr_len: Hardware address length | |
5343da4c TY |
1790 | * @upper_level: Maximum depth level of upper devices. |
1791 | * @lower_level: Maximum depth level of lower devices. | |
8626a0c8 | 1792 | * @neigh_priv_len: Used in neigh_alloc() |
536721b1 KK |
1793 | * @dev_id: Used to differentiate devices that share |
1794 | * the same link layer address | |
1795 | * @dev_port: Used to differentiate devices that share | |
1796 | * the same function | |
1797 | * @addr_list_lock: XXX: need comments on this one | |
a1fa83bd | 1798 | * @name_assign_type: network interface name assignment type |
5e82b4b2 | 1799 | * @uc_promisc: Counter that indicates promiscuous mode |
536721b1 KK |
1800 | * has been enabled due to the need to listen to |
1801 | * additional unicast addresses in a device that | |
1802 | * does not implement ndo_set_rx_mode() | |
14ffbbb8 TG |
1803 | * @uc: unicast mac addresses |
1804 | * @mc: multicast mac addresses | |
1805 | * @dev_addrs: list of device hw addresses | |
1806 | * @queues_kset: Group of all Kobjects in the Tx and RX queues | |
5e82b4b2 BH |
1807 | * @promiscuity: Number of times the NIC is told to work in |
1808 | * promiscuous mode; if it becomes 0 the NIC will | |
1809 | * exit promiscuous mode | |
536721b1 KK |
1810 | * @allmulti: Counter, enables or disables allmulticast mode |
1811 | * | |
1812 | * @vlan_info: VLAN info | |
1813 | * @dsa_ptr: dsa specific data | |
1814 | * @tipc_ptr: TIPC specific data | |
1815 | * @atalk_ptr: AppleTalk link | |
1816 | * @ip_ptr: IPv4 specific data | |
1817 | * @dn_ptr: DECnet specific data | |
1818 | * @ip6_ptr: IPv6 specific data | |
1819 | * @ax25_ptr: AX.25 specific data | |
1820 | * @ieee80211_ptr: IEEE 802.11 specific data, assign before registering | |
a1fa83bd RD |
1821 | * @ieee802154_ptr: IEEE 802.15.4 low-rate Wireless Personal Area Network |
1822 | * device struct | |
1823 | * @mpls_ptr: mpls_dev struct pointer | |
583be982 | 1824 | * @mctp_ptr: MCTP specific data |
536721b1 | 1825 | * |
536721b1 KK |
1826 | * @dev_addr: Hw address (before bcast, |
1827 | * because most packets are unicast) | |
1828 | * | |
1829 | * @_rx: Array of RX queues | |
1830 | * @num_rx_queues: Number of RX queues | |
1831 | * allocated at register_netdev() time | |
1832 | * @real_num_rx_queues: Number of RX queues currently active in device | |
a1fa83bd RD |
1833 | * @xdp_prog: XDP sockets filter program pointer |
1834 | * @gro_flush_timeout: timeout for GRO layer in NAPI | |
5c45a918 MCC |
1835 | * @napi_defer_hard_irqs: If not zero, provides a counter that would |
1836 | * allow to avoid NIC hard IRQ, on busy queues. | |
536721b1 KK |
1837 | * |
1838 | * @rx_handler: handler for received packets | |
1839 | * @rx_handler_data: XXX: need comments on this one | |
46209401 JP |
1840 | * @miniq_ingress: ingress/clsact qdisc specific data for |
1841 | * ingress processing | |
536721b1 | 1842 | * @ingress_queue: XXX: need comments on this one |
2f5e70c8 | 1843 | * @nf_hooks_ingress: netfilter hooks executed for ingress packets |
536721b1 KK |
1844 | * @broadcast: hw bcast address |
1845 | * | |
14ffbbb8 TG |
1846 | * @rx_cpu_rmap: CPU reverse-mapping for RX completion interrupts, |
1847 | * indexed by RX queue number. Assigned by driver. | |
1848 | * This must only be set if the ndo_rx_flow_steer | |
1849 | * operation is defined | |
1850 | * @index_hlist: Device index hash chain | |
1851 | * | |
536721b1 KK |
1852 | * @_tx: Array of TX queues |
1853 | * @num_tx_queues: Number of TX queues allocated at alloc_netdev_mq() time | |
1854 | * @real_num_tx_queues: Number of TX queues currently active in device | |
1855 | * @qdisc: Root qdisc from userspace point of view | |
1856 | * @tx_queue_len: Max frames per queue allowed | |
1857 | * @tx_global_lock: XXX: need comments on this one | |
a1fa83bd | 1858 | * @xdp_bulkq: XDP device bulk queue |
044ab86d | 1859 | * @xps_maps: all CPUs/RXQs maps for XPS device |
536721b1 KK |
1860 | * |
1861 | * @xps_maps: XXX: need comments on this one | |
46209401 JP |
1862 | * @miniq_egress: clsact qdisc specific data for |
1863 | * egress processing | |
a1fa83bd | 1864 | * @qdisc_hash: qdisc hash table |
536721b1 | 1865 | * @watchdog_timeo: Represents the timeout that is used by |
5e82b4b2 | 1866 | * the watchdog (see dev_watchdog()) |
536721b1 KK |
1867 | * @watchdog_timer: List of timers |
1868 | * | |
eb02d39a | 1869 | * @proto_down_reason: reason a netdev interface is held down |
536721b1 | 1870 | * @pcpu_refcnt: Number of references to this device |
add2d736 | 1871 | * @dev_refcnt: Number of references to this device |
536721b1 | 1872 | * @todo_list: Delayed register/unregister |
536721b1 KK |
1873 | * @link_watch_list: XXX: need comments on this one |
1874 | * | |
1875 | * @reg_state: Register/unregister state machine | |
1876 | * @dismantle: Device is going to be freed | |
1877 | * @rtnl_link_state: This enum represents the phases of creating | |
1878 | * a new link | |
1879 | * | |
cf124db5 DM |
1880 | * @needs_free_netdev: Should unregister perform free_netdev? |
1881 | * @priv_destructor: Called from unregister | |
536721b1 KK |
1882 | * @npinfo: XXX: need comments on this one |
1883 | * @nd_net: Network namespace this network device is inside | |
1884 | * | |
1885 | * @ml_priv: Mid-layer private | |
4e096a18 | 1886 | * @ml_priv_type: Mid-layer private type |
536721b1 KK |
1887 | * @lstats: Loopback statistics |
1888 | * @tstats: Tunnel statistics | |
1889 | * @dstats: Dummy statistics | |
1890 | * @vstats: Virtual ethernet statistics | |
1891 | * | |
1892 | * @garp_port: GARP | |
1893 | * @mrp_port: MRP | |
1894 | * | |
1895 | * @dev: Class/net/name entry | |
1896 | * @sysfs_groups: Space for optional device, statistics and wireless | |
1897 | * sysfs groups | |
1898 | * | |
1899 | * @sysfs_rx_queue_group: Space for optional per-rx queue attributes | |
1900 | * @rtnl_link_ops: Rtnl_link_ops | |
1901 | * | |
1902 | * @gso_max_size: Maximum size of generic segmentation offload | |
1903 | * @gso_max_segs: Maximum number of segments that can be passed to the | |
1904 | * NIC for GSO | |
1905 | * | |
1906 | * @dcbnl_ops: Data Center Bridging netlink ops | |
1907 | * @num_tc: Number of traffic classes in the net device | |
1908 | * @tc_to_txq: XXX: need comments on this one | |
920c1cd3 | 1909 | * @prio_tc_map: XXX: need comments on this one |
536721b1 KK |
1910 | * |
1911 | * @fcoe_ddp_xid: Max exchange id for FCoE LRO by ddp | |
1912 | * | |
1913 | * @priomap: XXX: need comments on this one | |
1914 | * @phydev: Physical device may attach itself | |
1915 | * for hardware timestamping | |
e679c9c1 | 1916 | * @sfp_bus: attached &struct sfp_bus structure. |
1a33e10e | 1917 | * |
1a33e10e CW |
1918 | * @qdisc_tx_busylock: lockdep class annotating Qdisc->busylock spinlock |
1919 | * @qdisc_running_key: lockdep class annotating Qdisc->running seqcount | |
536721b1 | 1920 | * |
d746d707 AK |
1921 | * @proto_down: protocol port state information can be sent to the |
1922 | * switch driver and used to set the phys state of the | |
1923 | * switch port. | |
1924 | * | |
61941143 HK |
1925 | * @wol_enabled: Wake-on-LAN is enabled |
1926 | * | |
29863d41 WW |
1927 | * @threaded: napi threaded mode is enabled |
1928 | * | |
93642e14 JP |
1929 | * @net_notifier_list: List of per-net netdev notifier block |
1930 | * that follow this device when it is moved | |
1931 | * to another network namespace. | |
1932 | * | |
30e9bb84 AT |
1933 | * @macsec_ops: MACsec offloading ops |
1934 | * | |
cc4e3835 JK |
1935 | * @udp_tunnel_nic_info: static structure describing the UDP tunnel |
1936 | * offload capabilities of the device | |
1937 | * @udp_tunnel_nic: UDP tunnel offload state | |
ffa59b0b | 1938 | * @xdp_state: stores info on attached XDP BPF programs |
cc4e3835 | 1939 | * |
a93bdcb9 MCC |
1940 | * @nested_level: Used as as a parameter of spin_lock_nested() of |
1941 | * dev->addr_list_lock. | |
1942 | * @unlink_list: As netif_addr_lock() can be called recursively, | |
1943 | * keep a list of interfaces to be deleted. | |
1944 | * | |
1da177e4 LT |
1945 | * FIXME: cleanup struct net_device such that network protocol info |
1946 | * moves out. | |
1947 | */ | |
1948 | ||
d94d9fee | 1949 | struct net_device { |
1da177e4 | 1950 | char name[IFNAMSIZ]; |
ff927412 | 1951 | struct netdev_name_node *name_node; |
6c557001 | 1952 | struct dev_ifalias __rcu *ifalias; |
1da177e4 LT |
1953 | /* |
1954 | * I/O specific fields | |
1955 | * FIXME: Merge these and struct ifmap into one | |
1956 | */ | |
536721b1 KK |
1957 | unsigned long mem_end; |
1958 | unsigned long mem_start; | |
1959 | unsigned long base_addr; | |
1da177e4 LT |
1960 | |
1961 | /* | |
536721b1 KK |
1962 | * Some hardware also needs these fields (state,dev_list, |
1963 | * napi_list,unreg_list,close_list) but they are not | |
1da177e4 LT |
1964 | * part of the usual set specified in Space.c. |
1965 | */ | |
1966 | ||
1da177e4 LT |
1967 | unsigned long state; |
1968 | ||
7562f876 | 1969 | struct list_head dev_list; |
bea3348e | 1970 | struct list_head napi_list; |
44a0873d | 1971 | struct list_head unreg_list; |
5cde2829 | 1972 | struct list_head close_list; |
7866a621 SN |
1973 | struct list_head ptype_all; |
1974 | struct list_head ptype_specific; | |
2f268f12 | 1975 | |
2f268f12 VF |
1976 | struct { |
1977 | struct list_head upper; | |
1978 | struct list_head lower; | |
1979 | } adj_list; | |
1980 | ||
28af22c6 JDB |
1981 | /* Read-mostly cache-line for fast-path access */ |
1982 | unsigned int flags; | |
1983 | unsigned int priv_flags; | |
1984 | const struct net_device_ops *netdev_ops; | |
1985 | int ifindex; | |
1986 | unsigned short gflags; | |
1987 | unsigned short hard_header_len; | |
1988 | ||
1989 | /* Note : dev->mtu is often read without holding a lock. | |
1990 | * Writers usually hold RTNL. | |
1991 | * It is recommended to use READ_ONCE() to annotate the reads, | |
1992 | * and to use WRITE_ONCE() to annotate the writes. | |
1993 | */ | |
1994 | unsigned int mtu; | |
1995 | unsigned short needed_headroom; | |
1996 | unsigned short needed_tailroom; | |
1997 | ||
c8f44aff | 1998 | netdev_features_t features; |
c8f44aff | 1999 | netdev_features_t hw_features; |
c8f44aff | 2000 | netdev_features_t wanted_features; |
c8f44aff | 2001 | netdev_features_t vlan_features; |
6a674e9c | 2002 | netdev_features_t hw_enc_features; |
0d89d203 | 2003 | netdev_features_t mpls_features; |
802ab55a | 2004 | netdev_features_t gso_partial_features; |
04ed3e74 | 2005 | |
28af22c6 JDB |
2006 | unsigned int min_mtu; |
2007 | unsigned int max_mtu; | |
2008 | unsigned short type; | |
2009 | unsigned char min_header_len; | |
2010 | unsigned char name_assign_type; | |
2011 | ||
7a66bbc9 | 2012 | int group; |
1da177e4 | 2013 | |
28af22c6 | 2014 | struct net_device_stats stats; /* not used by modern drivers */ |
015f0688 | 2015 | |
015f0688 ED |
2016 | atomic_long_t rx_dropped; |
2017 | atomic_long_t tx_dropped; | |
6e7333d3 | 2018 | atomic_long_t rx_nohandler; |
1da177e4 | 2019 | |
b2d3bcfa DD |
2020 | /* Stats to monitor link on/off, flapping */ |
2021 | atomic_t carrier_up_count; | |
2022 | atomic_t carrier_down_count; | |
2023 | ||
b86e0280 | 2024 | #ifdef CONFIG_WIRELESS_EXT |
5e82b4b2 BH |
2025 | const struct iw_handler_def *wireless_handlers; |
2026 | struct iw_public_data *wireless_data; | |
b86e0280 | 2027 | #endif |
76fd8593 | 2028 | const struct ethtool_ops *ethtool_ops; |
1b69c6d0 DA |
2029 | #ifdef CONFIG_NET_L3_MASTER_DEV |
2030 | const struct l3mdev_ops *l3mdev_ops; | |
2031 | #endif | |
f997c55c AA |
2032 | #if IS_ENABLED(CONFIG_IPV6) |
2033 | const struct ndisc_ops *ndisc_ops; | |
2034 | #endif | |
1da177e4 | 2035 | |
9cb0d21d | 2036 | #ifdef CONFIG_XFRM_OFFLOAD |
d77e38e6 SK |
2037 | const struct xfrmdev_ops *xfrmdev_ops; |
2038 | #endif | |
2039 | ||
a5c37c63 IL |
2040 | #if IS_ENABLED(CONFIG_TLS_DEVICE) |
2041 | const struct tlsdev_ops *tlsdev_ops; | |
2042 | #endif | |
2043 | ||
3b04ddde SH |
2044 | const struct header_ops *header_ops; |
2045 | ||
536721b1 KK |
2046 | unsigned char operstate; |
2047 | unsigned char link_mode; | |
b00055aa | 2048 | |
536721b1 KK |
2049 | unsigned char if_port; |
2050 | unsigned char dma; | |
bdc220da | 2051 | |
1da177e4 | 2052 | /* Interface address info. */ |
536721b1 KK |
2053 | unsigned char perm_addr[MAX_ADDR_LEN]; |
2054 | unsigned char addr_assign_type; | |
2055 | unsigned char addr_len; | |
5343da4c TY |
2056 | unsigned char upper_level; |
2057 | unsigned char lower_level; | |
1fc70edb | 2058 | |
a0a9663d | 2059 | unsigned short neigh_priv_len; |
536721b1 KK |
2060 | unsigned short dev_id; |
2061 | unsigned short dev_port; | |
28af22c6 JDB |
2062 | unsigned short padded; |
2063 | ||
ccffad25 | 2064 | spinlock_t addr_list_lock; |
28af22c6 | 2065 | int irq; |
1fc70edb | 2066 | |
536721b1 KK |
2067 | struct netdev_hw_addr_list uc; |
2068 | struct netdev_hw_addr_list mc; | |
2069 | struct netdev_hw_addr_list dev_addrs; | |
2070 | ||
4c3d5e7b ED |
2071 | #ifdef CONFIG_SYSFS |
2072 | struct kset *queues_kset; | |
1fc70edb TY |
2073 | #endif |
2074 | #ifdef CONFIG_LOCKDEP | |
2075 | struct list_head unlink_list; | |
4c3d5e7b | 2076 | #endif |
9d45abe1 WC |
2077 | unsigned int promiscuity; |
2078 | unsigned int allmulti; | |
1fc70edb TY |
2079 | bool uc_promisc; |
2080 | #ifdef CONFIG_LOCKDEP | |
2081 | unsigned char nested_level; | |
2082 | #endif | |
1da177e4 | 2083 | |
1da177e4 | 2084 | |
5e82b4b2 | 2085 | /* Protocol-specific pointers */ |
65ac6a5f | 2086 | |
d11ead75 | 2087 | #if IS_ENABLED(CONFIG_VLAN_8021Q) |
536721b1 | 2088 | struct vlan_info __rcu *vlan_info; |
65ac6a5f | 2089 | #endif |
34a430d7 | 2090 | #if IS_ENABLED(CONFIG_NET_DSA) |
2f657a60 | 2091 | struct dsa_port *dsa_ptr; |
37cb0620 YX |
2092 | #endif |
2093 | #if IS_ENABLED(CONFIG_TIPC) | |
536721b1 | 2094 | struct tipc_bearer __rcu *tipc_ptr; |
91da11f8 | 2095 | #endif |
89e58148 | 2096 | #if IS_ENABLED(CONFIG_IRDA) || IS_ENABLED(CONFIG_ATALK) |
536721b1 | 2097 | void *atalk_ptr; |
89e58148 | 2098 | #endif |
536721b1 | 2099 | struct in_device __rcu *ip_ptr; |
330c7272 | 2100 | #if IS_ENABLED(CONFIG_DECNET) |
536721b1 | 2101 | struct dn_dev __rcu *dn_ptr; |
330c7272 | 2102 | #endif |
536721b1 | 2103 | struct inet6_dev __rcu *ip6_ptr; |
19ff13f2 | 2104 | #if IS_ENABLED(CONFIG_AX25) |
536721b1 | 2105 | void *ax25_ptr; |
19ff13f2 | 2106 | #endif |
536721b1 | 2107 | struct wireless_dev *ieee80211_ptr; |
98a18b6f | 2108 | struct wpan_dev *ieee802154_ptr; |
03c57747 RS |
2109 | #if IS_ENABLED(CONFIG_MPLS_ROUTING) |
2110 | struct mpls_dev __rcu *mpls_ptr; | |
2111 | #endif | |
583be982 JK |
2112 | #if IS_ENABLED(CONFIG_MCTP) |
2113 | struct mctp_dev __rcu *mctp_ptr; | |
2114 | #endif | |
1da177e4 | 2115 | |
9356b8fc | 2116 | /* |
cd13539b | 2117 | * Cache lines mostly used on receive path (including eth_type_trans()) |
9356b8fc | 2118 | */ |
9356b8fc | 2119 | /* Interface address info used in eth_type_trans() */ |
536721b1 | 2120 | unsigned char *dev_addr; |
f001fde5 | 2121 | |
0a9627f2 | 2122 | struct netdev_rx_queue *_rx; |
0a9627f2 | 2123 | unsigned int num_rx_queues; |
62fe0b40 | 2124 | unsigned int real_num_rx_queues; |
0a9627f2 | 2125 | |
7acedaf5 | 2126 | struct bpf_prog __rcu *xdp_prog; |
3b47d303 | 2127 | unsigned long gro_flush_timeout; |
6f8b12d6 | 2128 | int napi_defer_hard_irqs; |
61391cde | 2129 | rx_handler_func_t __rcu *rx_handler; |
2130 | void __rcu *rx_handler_data; | |
e8a0464c | 2131 | |
4cda01e8 | 2132 | #ifdef CONFIG_NET_CLS_ACT |
46209401 | 2133 | struct mini_Qdisc __rcu *miniq_ingress; |
d2788d34 | 2134 | #endif |
24824a09 | 2135 | struct netdev_queue __rcu *ingress_queue; |
e687ad60 | 2136 | #ifdef CONFIG_NETFILTER_INGRESS |
960632ec | 2137 | struct nf_hook_entries __rcu *nf_hooks_ingress; |
e687ad60 | 2138 | #endif |
d2788d34 | 2139 | |
536721b1 | 2140 | unsigned char broadcast[MAX_ADDR_LEN]; |
14ffbbb8 TG |
2141 | #ifdef CONFIG_RFS_ACCEL |
2142 | struct cpu_rmap *rx_cpu_rmap; | |
2143 | #endif | |
2144 | struct hlist_node index_hlist; | |
cd13539b ED |
2145 | |
2146 | /* | |
2147 | * Cache lines mostly used on transmit path | |
2148 | */ | |
e8a0464c DM |
2149 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
2150 | unsigned int num_tx_queues; | |
fd2ea0a7 | 2151 | unsigned int real_num_tx_queues; |
af356afa | 2152 | struct Qdisc *qdisc; |
0cd29503 | 2153 | unsigned int tx_queue_len; |
c3f26a26 | 2154 | spinlock_t tx_global_lock; |
75ccae62 THJ |
2155 | |
2156 | struct xdp_dev_bulk_queue __percpu *xdp_bulkq; | |
cd13539b | 2157 | |
bf264145 | 2158 | #ifdef CONFIG_XPS |
044ab86d | 2159 | struct xps_dev_maps __rcu *xps_maps[XPS_MAPS_MAX]; |
bf264145 | 2160 | #endif |
1f211a1b | 2161 | #ifdef CONFIG_NET_CLS_ACT |
46209401 | 2162 | struct mini_Qdisc __rcu *miniq_egress; |
1f211a1b | 2163 | #endif |
0c4f691f | 2164 | |
75ccae62 THJ |
2165 | #ifdef CONFIG_NET_SCHED |
2166 | DECLARE_HASHTABLE (qdisc_hash, 4); | |
2167 | #endif | |
9356b8fc | 2168 | /* These may be needed for future network-power-down code. */ |
9356b8fc | 2169 | struct timer_list watchdog_timer; |
75ccae62 | 2170 | int watchdog_timeo; |
9356b8fc | 2171 | |
829eb208 RP |
2172 | u32 proto_down_reason; |
2173 | ||
1da177e4 | 2174 | struct list_head todo_list; |
919067cc ED |
2175 | |
2176 | #ifdef CONFIG_PCPU_DEV_REFCNT | |
75ccae62 | 2177 | int __percpu *pcpu_refcnt; |
919067cc ED |
2178 | #else |
2179 | refcount_t dev_refcnt; | |
2180 | #endif | |
1da177e4 | 2181 | |
e014debe | 2182 | struct list_head link_watch_list; |
572a103d | 2183 | |
1da177e4 | 2184 | enum { NETREG_UNINITIALIZED=0, |
b17a7c17 | 2185 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
2186 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
2187 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
2188 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 2189 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
449f4544 ED |
2190 | } reg_state:8; |
2191 | ||
536721b1 | 2192 | bool dismantle; |
a2835763 PM |
2193 | |
2194 | enum { | |
2195 | RTNL_LINK_INITIALIZED, | |
2196 | RTNL_LINK_INITIALIZING, | |
2197 | } rtnl_link_state:16; | |
1da177e4 | 2198 | |
cf124db5 DM |
2199 | bool needs_free_netdev; |
2200 | void (*priv_destructor)(struct net_device *dev); | |
1da177e4 | 2201 | |
1da177e4 | 2202 | #ifdef CONFIG_NETPOLL |
5fbee843 | 2203 | struct netpoll_info __rcu *npinfo; |
1da177e4 | 2204 | #endif |
eae792b7 | 2205 | |
0c5c9fb5 | 2206 | possible_net_t nd_net; |
4a1c5371 | 2207 | |
4951704b | 2208 | /* mid-layer private */ |
4e096a18 OR |
2209 | void *ml_priv; |
2210 | enum netdev_ml_priv_type ml_priv_type; | |
2211 | ||
a7855c78 | 2212 | union { |
536721b1 | 2213 | struct pcpu_lstats __percpu *lstats; |
8f84985f | 2214 | struct pcpu_sw_netstats __percpu *tstats; |
536721b1 | 2215 | struct pcpu_dstats __percpu *dstats; |
a7855c78 | 2216 | }; |
536721b1 | 2217 | |
fb585b44 | 2218 | #if IS_ENABLED(CONFIG_GARP) |
3cc77ec7 | 2219 | struct garp_port __rcu *garp_port; |
fb585b44 TK |
2220 | #endif |
2221 | #if IS_ENABLED(CONFIG_MRP) | |
febf018d | 2222 | struct mrp_port __rcu *mrp_port; |
fb585b44 | 2223 | #endif |
1da177e4 | 2224 | |
5e82b4b2 | 2225 | struct device dev; |
0c509a6c | 2226 | const struct attribute_group *sysfs_groups[4]; |
a953be53 | 2227 | const struct attribute_group *sysfs_rx_queue_group; |
38f7b870 | 2228 | |
38f7b870 | 2229 | const struct rtnl_link_ops *rtnl_link_ops; |
f25f4e44 | 2230 | |
82cc1a7a PWJ |
2231 | /* for setting kernel sock attribute on TCP connection setup */ |
2232 | #define GSO_MAX_SIZE 65536 | |
2233 | unsigned int gso_max_size; | |
30b678d8 BH |
2234 | #define GSO_MAX_SEGS 65535 |
2235 | u16 gso_max_segs; | |
743b03a8 | 2236 | |
7a6b6f51 | 2237 | #ifdef CONFIG_DCB |
32953543 | 2238 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
2f90b865 | 2239 | #endif |
ffcfe25b | 2240 | s16 num_tc; |
5e82b4b2 BH |
2241 | struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE]; |
2242 | u8 prio_tc_map[TC_BITMASK + 1]; | |
2f90b865 | 2243 | |
d11ead75 | 2244 | #if IS_ENABLED(CONFIG_FCOE) |
4d288d57 | 2245 | unsigned int fcoe_ddp_xid; |
5bc1421e | 2246 | #endif |
86f8515f | 2247 | #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO) |
5bc1421e | 2248 | struct netprio_map __rcu *priomap; |
4d288d57 | 2249 | #endif |
5e82b4b2 | 2250 | struct phy_device *phydev; |
e679c9c1 | 2251 | struct sfp_bus *sfp_bus; |
1a33e10e CW |
2252 | struct lock_class_key *qdisc_tx_busylock; |
2253 | struct lock_class_key *qdisc_running_key; | |
5e82b4b2 | 2254 | bool proto_down; |
61941143 | 2255 | unsigned wol_enabled:1; |
29863d41 | 2256 | unsigned threaded:1; |
93642e14 JP |
2257 | |
2258 | struct list_head net_notifier_list; | |
30e9bb84 AT |
2259 | |
2260 | #if IS_ENABLED(CONFIG_MACSEC) | |
2261 | /* MACsec management functions */ | |
2262 | const struct macsec_ops *macsec_ops; | |
2263 | #endif | |
cc4e3835 JK |
2264 | const struct udp_tunnel_nic_info *udp_tunnel_nic_info; |
2265 | struct udp_tunnel_nic *udp_tunnel_nic; | |
7f0a8382 AN |
2266 | |
2267 | /* protected by rtnl_lock */ | |
2268 | struct bpf_xdp_entity xdp_state[__MAX_XDP_MODE]; | |
1da177e4 | 2269 | }; |
43cb76d9 | 2270 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 | 2271 | |
b5cdae32 DM |
2272 | static inline bool netif_elide_gro(const struct net_device *dev) |
2273 | { | |
2274 | if (!(dev->features & NETIF_F_GRO) || dev->xdp_prog) | |
2275 | return true; | |
2276 | return false; | |
2277 | } | |
2278 | ||
1da177e4 | 2279 | #define NETDEV_ALIGN 32 |
1da177e4 | 2280 | |
4f57c087 JF |
2281 | static inline |
2282 | int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio) | |
2283 | { | |
2284 | return dev->prio_tc_map[prio & TC_BITMASK]; | |
2285 | } | |
2286 | ||
2287 | static inline | |
2288 | int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc) | |
2289 | { | |
2290 | if (tc >= dev->num_tc) | |
2291 | return -EINVAL; | |
2292 | ||
2293 | dev->prio_tc_map[prio & TC_BITMASK] = tc & TC_BITMASK; | |
2294 | return 0; | |
2295 | } | |
2296 | ||
8d059b0f | 2297 | int netdev_txq_to_tc(struct net_device *dev, unsigned int txq); |
9cf1f6a8 AD |
2298 | void netdev_reset_tc(struct net_device *dev); |
2299 | int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset); | |
2300 | int netdev_set_num_tc(struct net_device *dev, u8 num_tc); | |
4f57c087 JF |
2301 | |
2302 | static inline | |
2303 | int netdev_get_num_tc(struct net_device *dev) | |
2304 | { | |
2305 | return dev->num_tc; | |
2306 | } | |
2307 | ||
f468f21b TT |
2308 | static inline void net_prefetch(void *p) |
2309 | { | |
2310 | prefetch(p); | |
2311 | #if L1_CACHE_BYTES < 128 | |
2312 | prefetch((u8 *)p + L1_CACHE_BYTES); | |
2313 | #endif | |
2314 | } | |
2315 | ||
2316 | static inline void net_prefetchw(void *p) | |
2317 | { | |
2318 | prefetchw(p); | |
2319 | #if L1_CACHE_BYTES < 128 | |
2320 | prefetchw((u8 *)p + L1_CACHE_BYTES); | |
2321 | #endif | |
2322 | } | |
2323 | ||
ffcfe25b AD |
2324 | void netdev_unbind_sb_channel(struct net_device *dev, |
2325 | struct net_device *sb_dev); | |
2326 | int netdev_bind_sb_channel_queue(struct net_device *dev, | |
2327 | struct net_device *sb_dev, | |
2328 | u8 tc, u16 count, u16 offset); | |
2329 | int netdev_set_sb_channel(struct net_device *dev, u16 channel); | |
2330 | static inline int netdev_get_sb_channel(struct net_device *dev) | |
2331 | { | |
2332 | return max_t(int, -dev->num_tc, 0); | |
2333 | } | |
2334 | ||
e8a0464c DM |
2335 | static inline |
2336 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
2337 | unsigned int index) | |
2338 | { | |
2339 | return &dev->_tx[index]; | |
2340 | } | |
2341 | ||
10c51b56 DB |
2342 | static inline struct netdev_queue *skb_get_tx_queue(const struct net_device *dev, |
2343 | const struct sk_buff *skb) | |
2344 | { | |
2345 | return netdev_get_tx_queue(dev, skb_get_queue_mapping(skb)); | |
2346 | } | |
2347 | ||
e8a0464c DM |
2348 | static inline void netdev_for_each_tx_queue(struct net_device *dev, |
2349 | void (*f)(struct net_device *, | |
2350 | struct netdev_queue *, | |
2351 | void *), | |
2352 | void *arg) | |
2353 | { | |
2354 | unsigned int i; | |
2355 | ||
2356 | for (i = 0; i < dev->num_tx_queues; i++) | |
2357 | f(dev, &dev->_tx[i], arg); | |
2358 | } | |
2359 | ||
1a33e10e CW |
2360 | #define netdev_lockdep_set_classes(dev) \ |
2361 | { \ | |
2362 | static struct lock_class_key qdisc_tx_busylock_key; \ | |
2363 | static struct lock_class_key qdisc_running_key; \ | |
2364 | static struct lock_class_key qdisc_xmit_lock_key; \ | |
845e0ebb | 2365 | static struct lock_class_key dev_addr_list_lock_key; \ |
1a33e10e CW |
2366 | unsigned int i; \ |
2367 | \ | |
2368 | (dev)->qdisc_tx_busylock = &qdisc_tx_busylock_key; \ | |
2369 | (dev)->qdisc_running_key = &qdisc_running_key; \ | |
845e0ebb CW |
2370 | lockdep_set_class(&(dev)->addr_list_lock, \ |
2371 | &dev_addr_list_lock_key); \ | |
1a33e10e CW |
2372 | for (i = 0; i < (dev)->num_tx_queues; i++) \ |
2373 | lockdep_set_class(&(dev)->_tx[i]._xmit_lock, \ | |
2374 | &qdisc_xmit_lock_key); \ | |
2375 | } | |
2376 | ||
b71b5837 PA |
2377 | u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb, |
2378 | struct net_device *sb_dev); | |
4bd97d51 PA |
2379 | struct netdev_queue *netdev_core_pick_tx(struct net_device *dev, |
2380 | struct sk_buff *skb, | |
2381 | struct net_device *sb_dev); | |
8c4c49df | 2382 | |
871b642a PA |
2383 | /* returns the headroom that the master device needs to take in account |
2384 | * when forwarding to this dev | |
2385 | */ | |
2386 | static inline unsigned netdev_get_fwd_headroom(struct net_device *dev) | |
2387 | { | |
2388 | return dev->priv_flags & IFF_PHONY_HEADROOM ? 0 : dev->needed_headroom; | |
2389 | } | |
2390 | ||
2391 | static inline void netdev_set_rx_headroom(struct net_device *dev, int new_hr) | |
2392 | { | |
2393 | if (dev->netdev_ops->ndo_set_rx_headroom) | |
2394 | dev->netdev_ops->ndo_set_rx_headroom(dev, new_hr); | |
2395 | } | |
2396 | ||
2397 | /* set the device rx headroom to the dev's default */ | |
2398 | static inline void netdev_reset_rx_headroom(struct net_device *dev) | |
2399 | { | |
2400 | netdev_set_rx_headroom(dev, -1); | |
2401 | } | |
2402 | ||
4e096a18 OR |
2403 | static inline void *netdev_get_ml_priv(struct net_device *dev, |
2404 | enum netdev_ml_priv_type type) | |
2405 | { | |
2406 | if (dev->ml_priv_type != type) | |
2407 | return NULL; | |
2408 | ||
2409 | return dev->ml_priv; | |
2410 | } | |
2411 | ||
2412 | static inline void netdev_set_ml_priv(struct net_device *dev, | |
2413 | void *ml_priv, | |
2414 | enum netdev_ml_priv_type type) | |
2415 | { | |
2416 | WARN(dev->ml_priv_type && dev->ml_priv_type != type, | |
2417 | "Overwriting already set ml_priv_type (%u) with different ml_priv_type (%u)!\n", | |
2418 | dev->ml_priv_type, type); | |
2419 | WARN(!dev->ml_priv_type && dev->ml_priv, | |
2420 | "Overwriting already set ml_priv and ml_priv_type is ML_PRIV_NONE!\n"); | |
2421 | ||
2422 | dev->ml_priv = ml_priv; | |
2423 | dev->ml_priv_type = type; | |
2424 | } | |
2425 | ||
c346dca1 YH |
2426 | /* |
2427 | * Net namespace inlines | |
2428 | */ | |
2429 | static inline | |
2430 | struct net *dev_net(const struct net_device *dev) | |
2431 | { | |
c2d9ba9b | 2432 | return read_pnet(&dev->nd_net); |
c346dca1 YH |
2433 | } |
2434 | ||
2435 | static inline | |
f5aa23fd | 2436 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 | 2437 | { |
0c5c9fb5 | 2438 | write_pnet(&dev->nd_net, net); |
c346dca1 YH |
2439 | } |
2440 | ||
bea3348e SH |
2441 | /** |
2442 | * netdev_priv - access network device private data | |
2443 | * @dev: network device | |
2444 | * | |
2445 | * Get network device private data | |
2446 | */ | |
6472ce60 | 2447 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 2448 | { |
1ce8e7b5 | 2449 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
1da177e4 LT |
2450 | } |
2451 | ||
1da177e4 LT |
2452 | /* Set the sysfs physical device reference for the network logical device |
2453 | * if set prior to registration will cause a symlink during initialization. | |
2454 | */ | |
43cb76d9 | 2455 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 2456 | |
384912ed | 2457 | /* Set the sysfs device type for the network logical device to allow |
3f79410c | 2458 | * fine-grained identification of different network device types. For |
5e82b4b2 | 2459 | * example Ethernet, Wireless LAN, Bluetooth, WiMAX etc. |
384912ed MH |
2460 | */ |
2461 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) | |
2462 | ||
82dc3c63 ED |
2463 | /* Default NAPI poll() weight |
2464 | * Device drivers are strongly advised to not use bigger value | |
2465 | */ | |
2466 | #define NAPI_POLL_WEIGHT 64 | |
2467 | ||
3b582cc1 | 2468 | /** |
5e82b4b2 | 2469 | * netif_napi_add - initialize a NAPI context |
3b582cc1 | 2470 | * @dev: network device |
5e82b4b2 | 2471 | * @napi: NAPI context |
3b582cc1 SH |
2472 | * @poll: polling function |
2473 | * @weight: default weight | |
2474 | * | |
5e82b4b2 BH |
2475 | * netif_napi_add() must be used to initialize a NAPI context prior to calling |
2476 | * *any* of the other NAPI-related functions. | |
3b582cc1 | 2477 | */ |
d565b0a1 HX |
2478 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
2479 | int (*poll)(struct napi_struct *, int), int weight); | |
bea3348e | 2480 | |
d64b5e85 | 2481 | /** |
5e82b4b2 | 2482 | * netif_tx_napi_add - initialize a NAPI context |
d64b5e85 | 2483 | * @dev: network device |
5e82b4b2 | 2484 | * @napi: NAPI context |
d64b5e85 ED |
2485 | * @poll: polling function |
2486 | * @weight: default weight | |
2487 | * | |
2488 | * This variant of netif_napi_add() should be used from drivers using NAPI | |
2489 | * to exclusively poll a TX queue. | |
2490 | * This will avoid we add it into napi_hash[], thus polluting this hash table. | |
2491 | */ | |
2492 | static inline void netif_tx_napi_add(struct net_device *dev, | |
2493 | struct napi_struct *napi, | |
2494 | int (*poll)(struct napi_struct *, int), | |
2495 | int weight) | |
2496 | { | |
2497 | set_bit(NAPI_STATE_NO_BUSY_POLL, &napi->state); | |
2498 | netif_napi_add(dev, napi, poll, weight); | |
2499 | } | |
2500 | ||
5198d545 JK |
2501 | /** |
2502 | * __netif_napi_del - remove a NAPI context | |
2503 | * @napi: NAPI context | |
2504 | * | |
2505 | * Warning: caller must observe RCU grace period before freeing memory | |
2506 | * containing @napi. Drivers might want to call this helper to combine | |
2507 | * all the needed RCU grace periods into a single one. | |
2508 | */ | |
2509 | void __netif_napi_del(struct napi_struct *napi); | |
2510 | ||
d8156534 | 2511 | /** |
5e82b4b2 BH |
2512 | * netif_napi_del - remove a NAPI context |
2513 | * @napi: NAPI context | |
d8156534 | 2514 | * |
5e82b4b2 | 2515 | * netif_napi_del() removes a NAPI context from the network device NAPI list |
d8156534 | 2516 | */ |
5198d545 JK |
2517 | static inline void netif_napi_del(struct napi_struct *napi) |
2518 | { | |
2519 | __netif_napi_del(napi); | |
2520 | synchronize_net(); | |
2521 | } | |
d565b0a1 HX |
2522 | |
2523 | struct napi_gro_cb { | |
78a478d0 | 2524 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
5e82b4b2 | 2525 | void *frag0; |
78a478d0 | 2526 | |
7489594c HX |
2527 | /* Length of frag0. */ |
2528 | unsigned int frag0_len; | |
2529 | ||
86911732 | 2530 | /* This indicates where we are processing relative to skb->data. */ |
5e82b4b2 | 2531 | int data_offset; |
86911732 | 2532 | |
d565b0a1 | 2533 | /* This is non-zero if the packet cannot be merged with the new skb. */ |
bf5a755f JC |
2534 | u16 flush; |
2535 | ||
2536 | /* Save the IP ID here and check when we get to the transport layer */ | |
2537 | u16 flush_id; | |
d565b0a1 HX |
2538 | |
2539 | /* Number of segments aggregated. */ | |
2e71a6f8 ED |
2540 | u16 count; |
2541 | ||
15e2396d TH |
2542 | /* Start offset for remote checksum offload */ |
2543 | u16 gro_remcsum_start; | |
2544 | ||
2e71a6f8 ED |
2545 | /* jiffies when first packet was created/queued */ |
2546 | unsigned long age; | |
86347245 | 2547 | |
afe93325 | 2548 | /* Used in ipv6_gro_receive() and foo-over-udp */ |
b582ef09 OG |
2549 | u16 proto; |
2550 | ||
baa32ff4 TH |
2551 | /* This is non-zero if the packet may be of the same flow. */ |
2552 | u8 same_flow:1; | |
2553 | ||
fac8e0f5 JG |
2554 | /* Used in tunnel GRO receive */ |
2555 | u8 encap_mark:1; | |
573e8fca TH |
2556 | |
2557 | /* GRO checksum is valid */ | |
2558 | u8 csum_valid:1; | |
2559 | ||
662880f4 TH |
2560 | /* Number of checksums via CHECKSUM_UNNECESSARY */ |
2561 | u8 csum_cnt:3; | |
c3c7c254 | 2562 | |
baa32ff4 TH |
2563 | /* Free the skb? */ |
2564 | u8 free:2; | |
2565 | #define NAPI_GRO_FREE 1 | |
2566 | #define NAPI_GRO_FREE_STOLEN_HEAD 2 | |
2567 | ||
efc98d08 TH |
2568 | /* Used in foo-over-udp, set in udp[46]_gro_receive */ |
2569 | u8 is_ipv6:1; | |
2570 | ||
a0ca153f AD |
2571 | /* Used in GRE, set in fou/gue_gro_receive */ |
2572 | u8 is_fou:1; | |
2573 | ||
1530545e AD |
2574 | /* Used to determine if flush_id can be ignored */ |
2575 | u8 is_atomic:1; | |
2576 | ||
fcd91dd4 SD |
2577 | /* Number of gro_receive callbacks this packet already went through */ |
2578 | u8 recursion_counter:4; | |
2579 | ||
3a1296a3 SK |
2580 | /* GRO is done by frag_list pointer chaining. */ |
2581 | u8 is_flist:1; | |
baa32ff4 | 2582 | |
bf5a755f JC |
2583 | /* used to support CHECKSUM_COMPLETE for tunneling protocols */ |
2584 | __wsum csum; | |
2585 | ||
c3c7c254 ED |
2586 | /* used in skb_gro_receive() slow path */ |
2587 | struct sk_buff *last; | |
d565b0a1 HX |
2588 | }; |
2589 | ||
2590 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) | |
d8156534 | 2591 | |
fcd91dd4 SD |
2592 | #define GRO_RECURSION_LIMIT 15 |
2593 | static inline int gro_recursion_inc_test(struct sk_buff *skb) | |
2594 | { | |
2595 | return ++NAPI_GRO_CB(skb)->recursion_counter == GRO_RECURSION_LIMIT; | |
2596 | } | |
2597 | ||
d4546c25 DM |
2598 | typedef struct sk_buff *(*gro_receive_t)(struct list_head *, struct sk_buff *); |
2599 | static inline struct sk_buff *call_gro_receive(gro_receive_t cb, | |
2600 | struct list_head *head, | |
2601 | struct sk_buff *skb) | |
fcd91dd4 SD |
2602 | { |
2603 | if (unlikely(gro_recursion_inc_test(skb))) { | |
2604 | NAPI_GRO_CB(skb)->flush |= 1; | |
2605 | return NULL; | |
2606 | } | |
2607 | ||
2608 | return cb(head, skb); | |
2609 | } | |
2610 | ||
d4546c25 DM |
2611 | typedef struct sk_buff *(*gro_receive_sk_t)(struct sock *, struct list_head *, |
2612 | struct sk_buff *); | |
2613 | static inline struct sk_buff *call_gro_receive_sk(gro_receive_sk_t cb, | |
2614 | struct sock *sk, | |
2615 | struct list_head *head, | |
2616 | struct sk_buff *skb) | |
fcd91dd4 SD |
2617 | { |
2618 | if (unlikely(gro_recursion_inc_test(skb))) { | |
2619 | NAPI_GRO_CB(skb)->flush |= 1; | |
2620 | return NULL; | |
2621 | } | |
2622 | ||
2623 | return cb(sk, head, skb); | |
2624 | } | |
2625 | ||
1da177e4 | 2626 | struct packet_type { |
f2ccd8fa | 2627 | __be16 type; /* This is really htons(ether_type). */ |
fa788d98 | 2628 | bool ignore_outgoing; |
f2ccd8fa DM |
2629 | struct net_device *dev; /* NULL is wildcarded here */ |
2630 | int (*func) (struct sk_buff *, | |
2631 | struct net_device *, | |
2632 | struct packet_type *, | |
2633 | struct net_device *); | |
17266ee9 EC |
2634 | void (*list_func) (struct list_head *, |
2635 | struct packet_type *, | |
2636 | struct net_device *); | |
c0de08d0 EL |
2637 | bool (*id_match)(struct packet_type *ptype, |
2638 | struct sock *sk); | |
1da177e4 LT |
2639 | void *af_packet_priv; |
2640 | struct list_head list; | |
2641 | }; | |
2642 | ||
f191a1d1 | 2643 | struct offload_callbacks { |
576a30eb | 2644 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
c8f44aff | 2645 | netdev_features_t features); |
d4546c25 DM |
2646 | struct sk_buff *(*gro_receive)(struct list_head *head, |
2647 | struct sk_buff *skb); | |
299603e8 | 2648 | int (*gro_complete)(struct sk_buff *skb, int nhoff); |
f191a1d1 VY |
2649 | }; |
2650 | ||
2651 | struct packet_offload { | |
2652 | __be16 type; /* This is really htons(ether_type). */ | |
bdef7de4 | 2653 | u16 priority; |
f191a1d1 VY |
2654 | struct offload_callbacks callbacks; |
2655 | struct list_head list; | |
1da177e4 LT |
2656 | }; |
2657 | ||
5e82b4b2 | 2658 | /* often modified stats are per-CPU, other are shared (netdev->stats) */ |
8f84985f LR |
2659 | struct pcpu_sw_netstats { |
2660 | u64 rx_packets; | |
2661 | u64 rx_bytes; | |
2662 | u64 tx_packets; | |
2663 | u64 tx_bytes; | |
2664 | struct u64_stats_sync syncp; | |
9a5ee462 | 2665 | } __aligned(4 * sizeof(u64)); |
52bb6677 LR |
2666 | |
2667 | struct pcpu_lstats { | |
fd2f4737 ED |
2668 | u64_stats_t packets; |
2669 | u64_stats_t bytes; | |
52bb6677 | 2670 | struct u64_stats_sync syncp; |
9a5ee462 | 2671 | } __aligned(2 * sizeof(u64)); |
8f84985f | 2672 | |
de7d5084 ED |
2673 | void dev_lstats_read(struct net_device *dev, u64 *packets, u64 *bytes); |
2674 | ||
451b05f4 FF |
2675 | static inline void dev_sw_netstats_rx_add(struct net_device *dev, unsigned int len) |
2676 | { | |
2677 | struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats); | |
2678 | ||
2679 | u64_stats_update_begin(&tstats->syncp); | |
2680 | tstats->rx_bytes += len; | |
2681 | tstats->rx_packets++; | |
2682 | u64_stats_update_end(&tstats->syncp); | |
2683 | } | |
2684 | ||
d3fd6548 HK |
2685 | static inline void dev_sw_netstats_tx_add(struct net_device *dev, |
2686 | unsigned int packets, | |
2687 | unsigned int len) | |
2688 | { | |
2689 | struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats); | |
2690 | ||
2691 | u64_stats_update_begin(&tstats->syncp); | |
2692 | tstats->tx_bytes += len; | |
2693 | tstats->tx_packets += packets; | |
2694 | u64_stats_update_end(&tstats->syncp); | |
2695 | } | |
2696 | ||
dd5382a0 ED |
2697 | static inline void dev_lstats_add(struct net_device *dev, unsigned int len) |
2698 | { | |
2699 | struct pcpu_lstats *lstats = this_cpu_ptr(dev->lstats); | |
2700 | ||
2701 | u64_stats_update_begin(&lstats->syncp); | |
fd2f4737 ED |
2702 | u64_stats_add(&lstats->bytes, len); |
2703 | u64_stats_inc(&lstats->packets); | |
dd5382a0 ED |
2704 | u64_stats_update_end(&lstats->syncp); |
2705 | } | |
2706 | ||
aabc92bb PNA |
2707 | #define __netdev_alloc_pcpu_stats(type, gfp) \ |
2708 | ({ \ | |
2709 | typeof(type) __percpu *pcpu_stats = alloc_percpu_gfp(type, gfp);\ | |
2710 | if (pcpu_stats) { \ | |
2711 | int __cpu; \ | |
2712 | for_each_possible_cpu(__cpu) { \ | |
2713 | typeof(type) *stat; \ | |
2714 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ | |
2715 | u64_stats_init(&stat->syncp); \ | |
2716 | } \ | |
2717 | } \ | |
2718 | pcpu_stats; \ | |
1c213bd2 WC |
2719 | }) |
2720 | ||
aabc92bb | 2721 | #define netdev_alloc_pcpu_stats(type) \ |
326fcfa5 | 2722 | __netdev_alloc_pcpu_stats(type, GFP_KERNEL) |
aabc92bb | 2723 | |
81b01894 HK |
2724 | #define devm_netdev_alloc_pcpu_stats(dev, type) \ |
2725 | ({ \ | |
2726 | typeof(type) __percpu *pcpu_stats = devm_alloc_percpu(dev, type);\ | |
2727 | if (pcpu_stats) { \ | |
2728 | int __cpu; \ | |
2729 | for_each_possible_cpu(__cpu) { \ | |
2730 | typeof(type) *stat; \ | |
2731 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ | |
2732 | u64_stats_init(&stat->syncp); \ | |
2733 | } \ | |
2734 | } \ | |
2735 | pcpu_stats; \ | |
2736 | }) | |
2737 | ||
764f5e54 JP |
2738 | enum netdev_lag_tx_type { |
2739 | NETDEV_LAG_TX_TYPE_UNKNOWN, | |
2740 | NETDEV_LAG_TX_TYPE_RANDOM, | |
2741 | NETDEV_LAG_TX_TYPE_BROADCAST, | |
2742 | NETDEV_LAG_TX_TYPE_ROUNDROBIN, | |
2743 | NETDEV_LAG_TX_TYPE_ACTIVEBACKUP, | |
2744 | NETDEV_LAG_TX_TYPE_HASH, | |
2745 | }; | |
2746 | ||
f44aa9ef JH |
2747 | enum netdev_lag_hash { |
2748 | NETDEV_LAG_HASH_NONE, | |
2749 | NETDEV_LAG_HASH_L2, | |
2750 | NETDEV_LAG_HASH_L34, | |
2751 | NETDEV_LAG_HASH_L23, | |
2752 | NETDEV_LAG_HASH_E23, | |
2753 | NETDEV_LAG_HASH_E34, | |
7b8fc010 | 2754 | NETDEV_LAG_HASH_VLAN_SRCMAC, |
f44aa9ef JH |
2755 | NETDEV_LAG_HASH_UNKNOWN, |
2756 | }; | |
2757 | ||
764f5e54 JP |
2758 | struct netdev_lag_upper_info { |
2759 | enum netdev_lag_tx_type tx_type; | |
f44aa9ef | 2760 | enum netdev_lag_hash hash_type; |
764f5e54 JP |
2761 | }; |
2762 | ||
fb1b2e3c JP |
2763 | struct netdev_lag_lower_state_info { |
2764 | u8 link_up : 1, | |
2765 | tx_enabled : 1; | |
2766 | }; | |
2767 | ||
1da177e4 LT |
2768 | #include <linux/notifier.h> |
2769 | ||
ede2762d KT |
2770 | /* netdevice notifier chain. Please remember to update netdev_cmd_to_name() |
2771 | * and the rtnetlink notification exclusion list in rtnetlink_event() when | |
2772 | * adding new types. | |
dcfe1421 | 2773 | */ |
ede2762d KT |
2774 | enum netdev_cmd { |
2775 | NETDEV_UP = 1, /* For now you can't veto a device up/down */ | |
2776 | NETDEV_DOWN, | |
2777 | NETDEV_REBOOT, /* Tell a protocol stack a network interface | |
dcfe1421 AW |
2778 | detected a hardware crash and restarted |
2779 | - we can use this eg to kick tcp sessions | |
2780 | once done */ | |
ede2762d KT |
2781 | NETDEV_CHANGE, /* Notify device state change */ |
2782 | NETDEV_REGISTER, | |
2783 | NETDEV_UNREGISTER, | |
2784 | NETDEV_CHANGEMTU, /* notify after mtu change happened */ | |
1570415f PM |
2785 | NETDEV_CHANGEADDR, /* notify after the address change */ |
2786 | NETDEV_PRE_CHANGEADDR, /* notify before the address change */ | |
ede2762d KT |
2787 | NETDEV_GOING_DOWN, |
2788 | NETDEV_CHANGENAME, | |
2789 | NETDEV_FEAT_CHANGE, | |
2790 | NETDEV_BONDING_FAILOVER, | |
2791 | NETDEV_PRE_UP, | |
2792 | NETDEV_PRE_TYPE_CHANGE, | |
2793 | NETDEV_POST_TYPE_CHANGE, | |
2794 | NETDEV_POST_INIT, | |
ede2762d KT |
2795 | NETDEV_RELEASE, |
2796 | NETDEV_NOTIFY_PEERS, | |
2797 | NETDEV_JOIN, | |
2798 | NETDEV_CHANGEUPPER, | |
2799 | NETDEV_RESEND_IGMP, | |
2800 | NETDEV_PRECHANGEMTU, /* notify before mtu change happened */ | |
2801 | NETDEV_CHANGEINFODATA, | |
2802 | NETDEV_BONDING_INFO, | |
2803 | NETDEV_PRECHANGEUPPER, | |
2804 | NETDEV_CHANGELOWERSTATE, | |
2805 | NETDEV_UDP_TUNNEL_PUSH_INFO, | |
2806 | NETDEV_UDP_TUNNEL_DROP_INFO, | |
2807 | NETDEV_CHANGE_TX_QUEUE_LEN, | |
9daae9bd GP |
2808 | NETDEV_CVLAN_FILTER_PUSH_INFO, |
2809 | NETDEV_CVLAN_FILTER_DROP_INFO, | |
2810 | NETDEV_SVLAN_FILTER_PUSH_INFO, | |
2811 | NETDEV_SVLAN_FILTER_DROP_INFO, | |
ede2762d KT |
2812 | }; |
2813 | const char *netdev_cmd_to_name(enum netdev_cmd cmd); | |
dcfe1421 | 2814 | |
f629d208 JP |
2815 | int register_netdevice_notifier(struct notifier_block *nb); |
2816 | int unregister_netdevice_notifier(struct notifier_block *nb); | |
a30c7b42 JP |
2817 | int register_netdevice_notifier_net(struct net *net, struct notifier_block *nb); |
2818 | int unregister_netdevice_notifier_net(struct net *net, | |
2819 | struct notifier_block *nb); | |
93642e14 JP |
2820 | int register_netdevice_notifier_dev_net(struct net_device *dev, |
2821 | struct notifier_block *nb, | |
2822 | struct netdev_net_notifier *nn); | |
2823 | int unregister_netdevice_notifier_dev_net(struct net_device *dev, | |
2824 | struct notifier_block *nb, | |
2825 | struct netdev_net_notifier *nn); | |
351638e7 JP |
2826 | |
2827 | struct netdev_notifier_info { | |
51d0c047 DA |
2828 | struct net_device *dev; |
2829 | struct netlink_ext_ack *extack; | |
351638e7 JP |
2830 | }; |
2831 | ||
af7d6cce SD |
2832 | struct netdev_notifier_info_ext { |
2833 | struct netdev_notifier_info info; /* must be first */ | |
2834 | union { | |
2835 | u32 mtu; | |
2836 | } ext; | |
2837 | }; | |
2838 | ||
be9efd36 JP |
2839 | struct netdev_notifier_change_info { |
2840 | struct netdev_notifier_info info; /* must be first */ | |
2841 | unsigned int flags_changed; | |
2842 | }; | |
2843 | ||
0e4ead9d JP |
2844 | struct netdev_notifier_changeupper_info { |
2845 | struct netdev_notifier_info info; /* must be first */ | |
2846 | struct net_device *upper_dev; /* new upper dev */ | |
2847 | bool master; /* is upper dev master */ | |
5e82b4b2 | 2848 | bool linking; /* is the notification for link or unlink */ |
29bf24af | 2849 | void *upper_info; /* upper dev info */ |
0e4ead9d JP |
2850 | }; |
2851 | ||
04d48266 JP |
2852 | struct netdev_notifier_changelowerstate_info { |
2853 | struct netdev_notifier_info info; /* must be first */ | |
2854 | void *lower_state_info; /* is lower dev state */ | |
2855 | }; | |
2856 | ||
1570415f PM |
2857 | struct netdev_notifier_pre_changeaddr_info { |
2858 | struct netdev_notifier_info info; /* must be first */ | |
2859 | const unsigned char *dev_addr; | |
2860 | }; | |
2861 | ||
75538c2b CW |
2862 | static inline void netdev_notifier_info_init(struct netdev_notifier_info *info, |
2863 | struct net_device *dev) | |
2864 | { | |
2865 | info->dev = dev; | |
51d0c047 | 2866 | info->extack = NULL; |
75538c2b CW |
2867 | } |
2868 | ||
351638e7 JP |
2869 | static inline struct net_device * |
2870 | netdev_notifier_info_to_dev(const struct netdev_notifier_info *info) | |
2871 | { | |
2872 | return info->dev; | |
2873 | } | |
2874 | ||
51d0c047 DA |
2875 | static inline struct netlink_ext_ack * |
2876 | netdev_notifier_info_to_extack(const struct netdev_notifier_info *info) | |
2877 | { | |
2878 | return info->extack; | |
2879 | } | |
2880 | ||
f629d208 | 2881 | int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
dcfe1421 AW |
2882 | |
2883 | ||
1da177e4 LT |
2884 | extern rwlock_t dev_base_lock; /* Device list lock */ |
2885 | ||
881d966b EB |
2886 | #define for_each_netdev(net, d) \ |
2887 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
dcbccbd4 EB |
2888 | #define for_each_netdev_reverse(net, d) \ |
2889 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) | |
c6d14c84 ED |
2890 | #define for_each_netdev_rcu(net, d) \ |
2891 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b EB |
2892 | #define for_each_netdev_safe(net, d, n) \ |
2893 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
2894 | #define for_each_netdev_continue(net, d) \ | |
2895 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
afa0df59 JP |
2896 | #define for_each_netdev_continue_reverse(net, d) \ |
2897 | list_for_each_entry_continue_reverse(d, &(net)->dev_base_head, \ | |
2898 | dev_list) | |
254245d2 | 2899 | #define for_each_netdev_continue_rcu(net, d) \ |
2900 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) | |
8a7fbfab | 2901 | #define for_each_netdev_in_bond_rcu(bond, slave) \ |
2902 | for_each_netdev_rcu(&init_net, slave) \ | |
4ccce02e | 2903 | if (netdev_master_upper_dev_get_rcu(slave) == (bond)) |
881d966b | 2904 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
7562f876 | 2905 | |
a050c33f DL |
2906 | static inline struct net_device *next_net_device(struct net_device *dev) |
2907 | { | |
2908 | struct list_head *lh; | |
2909 | struct net *net; | |
2910 | ||
c346dca1 | 2911 | net = dev_net(dev); |
a050c33f DL |
2912 | lh = dev->dev_list.next; |
2913 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2914 | } | |
2915 | ||
ce81b76a ED |
2916 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
2917 | { | |
2918 | struct list_head *lh; | |
2919 | struct net *net; | |
2920 | ||
2921 | net = dev_net(dev); | |
ccf43438 | 2922 | lh = rcu_dereference(list_next_rcu(&dev->dev_list)); |
ce81b76a ED |
2923 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
2924 | } | |
2925 | ||
a050c33f DL |
2926 | static inline struct net_device *first_net_device(struct net *net) |
2927 | { | |
2928 | return list_empty(&net->dev_base_head) ? NULL : | |
2929 | net_device_entry(net->dev_base_head.next); | |
2930 | } | |
7562f876 | 2931 | |
ccf43438 ED |
2932 | static inline struct net_device *first_net_device_rcu(struct net *net) |
2933 | { | |
2934 | struct list_head *lh = rcu_dereference(list_next_rcu(&net->dev_base_head)); | |
2935 | ||
2936 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
2937 | } | |
2938 | ||
f629d208 | 2939 | int netdev_boot_setup_check(struct net_device *dev); |
f629d208 JP |
2940 | struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, |
2941 | const char *hwaddr); | |
2942 | struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
f629d208 JP |
2943 | void dev_add_pack(struct packet_type *pt); |
2944 | void dev_remove_pack(struct packet_type *pt); | |
2945 | void __dev_remove_pack(struct packet_type *pt); | |
2946 | void dev_add_offload(struct packet_offload *po); | |
2947 | void dev_remove_offload(struct packet_offload *po); | |
f629d208 | 2948 | |
a54acb3a | 2949 | int dev_get_iflink(const struct net_device *dev); |
fc4099f1 | 2950 | int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb); |
ddb94eaf PNA |
2951 | int dev_fill_forward_path(const struct net_device *dev, const u8 *daddr, |
2952 | struct net_device_path_stack *stack); | |
6c555490 WC |
2953 | struct net_device *__dev_get_by_flags(struct net *net, unsigned short flags, |
2954 | unsigned short mask); | |
f629d208 JP |
2955 | struct net_device *dev_get_by_name(struct net *net, const char *name); |
2956 | struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); | |
2957 | struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
2958 | int dev_alloc_name(struct net_device *dev, const char *name); | |
00f54e68 | 2959 | int dev_open(struct net_device *dev, struct netlink_ext_ack *extack); |
7051b88a | 2960 | void dev_close(struct net_device *dev); |
2961 | void dev_close_many(struct list_head *head, bool unlink); | |
f629d208 | 2962 | void dev_disable_lro(struct net_device *dev); |
0c4b51f0 | 2963 | int dev_loopback_xmit(struct net *net, struct sock *sk, struct sk_buff *newskb); |
a4ea8a3d | 2964 | u16 dev_pick_tx_zero(struct net_device *dev, struct sk_buff *skb, |
a350ecce | 2965 | struct net_device *sb_dev); |
a4ea8a3d | 2966 | u16 dev_pick_tx_cpu_id(struct net_device *dev, struct sk_buff *skb, |
a350ecce | 2967 | struct net_device *sb_dev); |
36ccdf85 | 2968 | |
2b4aa3ce | 2969 | int dev_queue_xmit(struct sk_buff *skb); |
eadec877 | 2970 | int dev_queue_xmit_accel(struct sk_buff *skb, struct net_device *sb_dev); |
36ccdf85 BT |
2971 | int __dev_direct_xmit(struct sk_buff *skb, u16 queue_id); |
2972 | ||
2973 | static inline int dev_direct_xmit(struct sk_buff *skb, u16 queue_id) | |
2974 | { | |
2975 | int ret; | |
2976 | ||
2977 | ret = __dev_direct_xmit(skb, queue_id); | |
2978 | if (!dev_xmit_complete(ret)) | |
2979 | kfree_skb(skb); | |
2980 | return ret; | |
2981 | } | |
2982 | ||
f629d208 JP |
2983 | int register_netdevice(struct net_device *dev); |
2984 | void unregister_netdevice_queue(struct net_device *dev, struct list_head *head); | |
2985 | void unregister_netdevice_many(struct list_head *head); | |
44a0873d ED |
2986 | static inline void unregister_netdevice(struct net_device *dev) |
2987 | { | |
2988 | unregister_netdevice_queue(dev, NULL); | |
2989 | } | |
2990 | ||
f629d208 JP |
2991 | int netdev_refcnt_read(const struct net_device *dev); |
2992 | void free_netdev(struct net_device *dev); | |
74d332c1 | 2993 | void netdev_freemem(struct net_device *dev); |
f629d208 | 2994 | int init_dummy_netdev(struct net_device *dev); |
937f1ba5 | 2995 | |
cff9f12b MG |
2996 | struct net_device *netdev_get_xmit_slave(struct net_device *dev, |
2997 | struct sk_buff *skb, | |
2998 | bool all_slaves); | |
719a402c TT |
2999 | struct net_device *netdev_sk_get_lowest_dev(struct net_device *dev, |
3000 | struct sock *sk); | |
f629d208 JP |
3001 | struct net_device *dev_get_by_index(struct net *net, int ifindex); |
3002 | struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
3003 | struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); | |
90b602f8 | 3004 | struct net_device *dev_get_by_napi_id(unsigned int napi_id); |
f629d208 JP |
3005 | int netdev_get_name(struct net *net, char *name, int ifindex); |
3006 | int dev_restart(struct net_device *dev); | |
d4546c25 | 3007 | int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb); |
3a1296a3 | 3008 | int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb); |
86911732 HX |
3009 | |
3010 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) | |
3011 | { | |
3012 | return NAPI_GRO_CB(skb)->data_offset; | |
3013 | } | |
3014 | ||
3015 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) | |
3016 | { | |
3017 | return skb->len - NAPI_GRO_CB(skb)->data_offset; | |
3018 | } | |
3019 | ||
3020 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) | |
3021 | { | |
3022 | NAPI_GRO_CB(skb)->data_offset += len; | |
3023 | } | |
3024 | ||
a5b1cf28 HX |
3025 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
3026 | unsigned int offset) | |
86911732 | 3027 | { |
a5b1cf28 HX |
3028 | return NAPI_GRO_CB(skb)->frag0 + offset; |
3029 | } | |
78a478d0 | 3030 | |
a5b1cf28 HX |
3031 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
3032 | { | |
3033 | return NAPI_GRO_CB(skb)->frag0_len < hlen; | |
3034 | } | |
78a478d0 | 3035 | |
57ea52a8 HX |
3036 | static inline void skb_gro_frag0_invalidate(struct sk_buff *skb) |
3037 | { | |
3038 | NAPI_GRO_CB(skb)->frag0 = NULL; | |
3039 | NAPI_GRO_CB(skb)->frag0_len = 0; | |
3040 | } | |
3041 | ||
a5b1cf28 HX |
3042 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
3043 | unsigned int offset) | |
3044 | { | |
17dd759c HX |
3045 | if (!pskb_may_pull(skb, hlen)) |
3046 | return NULL; | |
3047 | ||
57ea52a8 | 3048 | skb_gro_frag0_invalidate(skb); |
17dd759c | 3049 | return skb->data + offset; |
86911732 | 3050 | } |
1da177e4 | 3051 | |
36e7b1b8 HX |
3052 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
3053 | { | |
78d3fd0b HX |
3054 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
3055 | skb_network_offset(skb); | |
36e7b1b8 HX |
3056 | } |
3057 | ||
bf5a755f JC |
3058 | static inline void skb_gro_postpull_rcsum(struct sk_buff *skb, |
3059 | const void *start, unsigned int len) | |
3060 | { | |
573e8fca | 3061 | if (NAPI_GRO_CB(skb)->csum_valid) |
bf5a755f JC |
3062 | NAPI_GRO_CB(skb)->csum = csum_sub(NAPI_GRO_CB(skb)->csum, |
3063 | csum_partial(start, len, 0)); | |
3064 | } | |
3065 | ||
573e8fca TH |
3066 | /* GRO checksum functions. These are logical equivalents of the normal |
3067 | * checksum functions (in skbuff.h) except that they operate on the GRO | |
3068 | * offsets and fields in sk_buff. | |
3069 | */ | |
3070 | ||
3071 | __sum16 __skb_gro_checksum_complete(struct sk_buff *skb); | |
3072 | ||
15e2396d TH |
3073 | static inline bool skb_at_gro_remcsum_start(struct sk_buff *skb) |
3074 | { | |
b7fe10e5 | 3075 | return (NAPI_GRO_CB(skb)->gro_remcsum_start == skb_gro_offset(skb)); |
15e2396d TH |
3076 | } |
3077 | ||
573e8fca TH |
3078 | static inline bool __skb_gro_checksum_validate_needed(struct sk_buff *skb, |
3079 | bool zero_okay, | |
3080 | __sum16 check) | |
3081 | { | |
6edec0e6 TH |
3082 | return ((skb->ip_summed != CHECKSUM_PARTIAL || |
3083 | skb_checksum_start_offset(skb) < | |
3084 | skb_gro_offset(skb)) && | |
15e2396d | 3085 | !skb_at_gro_remcsum_start(skb) && |
662880f4 | 3086 | NAPI_GRO_CB(skb)->csum_cnt == 0 && |
573e8fca TH |
3087 | (!zero_okay || check)); |
3088 | } | |
3089 | ||
3090 | static inline __sum16 __skb_gro_checksum_validate_complete(struct sk_buff *skb, | |
3091 | __wsum psum) | |
3092 | { | |
3093 | if (NAPI_GRO_CB(skb)->csum_valid && | |
3094 | !csum_fold(csum_add(psum, NAPI_GRO_CB(skb)->csum))) | |
3095 | return 0; | |
3096 | ||
3097 | NAPI_GRO_CB(skb)->csum = psum; | |
3098 | ||
3099 | return __skb_gro_checksum_complete(skb); | |
3100 | } | |
3101 | ||
573e8fca TH |
3102 | static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb) |
3103 | { | |
662880f4 TH |
3104 | if (NAPI_GRO_CB(skb)->csum_cnt > 0) { |
3105 | /* Consume a checksum from CHECKSUM_UNNECESSARY */ | |
3106 | NAPI_GRO_CB(skb)->csum_cnt--; | |
3107 | } else { | |
3108 | /* Update skb for CHECKSUM_UNNECESSARY and csum_level when we | |
3109 | * verified a new top level checksum or an encapsulated one | |
3110 | * during GRO. This saves work if we fallback to normal path. | |
3111 | */ | |
3112 | __skb_incr_checksum_unnecessary(skb); | |
573e8fca TH |
3113 | } |
3114 | } | |
3115 | ||
3116 | #define __skb_gro_checksum_validate(skb, proto, zero_okay, check, \ | |
3117 | compute_pseudo) \ | |
3118 | ({ \ | |
3119 | __sum16 __ret = 0; \ | |
3120 | if (__skb_gro_checksum_validate_needed(skb, zero_okay, check)) \ | |
3121 | __ret = __skb_gro_checksum_validate_complete(skb, \ | |
3122 | compute_pseudo(skb, proto)); \ | |
219f1d79 | 3123 | if (!__ret) \ |
573e8fca TH |
3124 | skb_gro_incr_csum_unnecessary(skb); \ |
3125 | __ret; \ | |
3126 | }) | |
3127 | ||
3128 | #define skb_gro_checksum_validate(skb, proto, compute_pseudo) \ | |
3129 | __skb_gro_checksum_validate(skb, proto, false, 0, compute_pseudo) | |
3130 | ||
3131 | #define skb_gro_checksum_validate_zero_check(skb, proto, check, \ | |
3132 | compute_pseudo) \ | |
3133 | __skb_gro_checksum_validate(skb, proto, true, check, compute_pseudo) | |
3134 | ||
3135 | #define skb_gro_checksum_simple_validate(skb) \ | |
3136 | __skb_gro_checksum_validate(skb, 0, false, 0, null_compute_pseudo) | |
3137 | ||
d96535a1 TH |
3138 | static inline bool __skb_gro_checksum_convert_check(struct sk_buff *skb) |
3139 | { | |
3140 | return (NAPI_GRO_CB(skb)->csum_cnt == 0 && | |
3141 | !NAPI_GRO_CB(skb)->csum_valid); | |
3142 | } | |
3143 | ||
3144 | static inline void __skb_gro_checksum_convert(struct sk_buff *skb, | |
b39c78b2 | 3145 | __wsum pseudo) |
d96535a1 TH |
3146 | { |
3147 | NAPI_GRO_CB(skb)->csum = ~pseudo; | |
3148 | NAPI_GRO_CB(skb)->csum_valid = 1; | |
3149 | } | |
3150 | ||
b39c78b2 | 3151 | #define skb_gro_checksum_try_convert(skb, proto, compute_pseudo) \ |
d96535a1 TH |
3152 | do { \ |
3153 | if (__skb_gro_checksum_convert_check(skb)) \ | |
b39c78b2 | 3154 | __skb_gro_checksum_convert(skb, \ |
d96535a1 TH |
3155 | compute_pseudo(skb, proto)); \ |
3156 | } while (0) | |
3157 | ||
26c4f7da TH |
3158 | struct gro_remcsum { |
3159 | int offset; | |
3160 | __wsum delta; | |
3161 | }; | |
3162 | ||
3163 | static inline void skb_gro_remcsum_init(struct gro_remcsum *grc) | |
3164 | { | |
846cd667 | 3165 | grc->offset = 0; |
26c4f7da TH |
3166 | grc->delta = 0; |
3167 | } | |
3168 | ||
b7fe10e5 TH |
3169 | static inline void *skb_gro_remcsum_process(struct sk_buff *skb, void *ptr, |
3170 | unsigned int off, size_t hdrlen, | |
3171 | int start, int offset, | |
3172 | struct gro_remcsum *grc, | |
3173 | bool nopartial) | |
dcdc8994 TH |
3174 | { |
3175 | __wsum delta; | |
b7fe10e5 | 3176 | size_t plen = hdrlen + max_t(size_t, offset + sizeof(u16), start); |
dcdc8994 TH |
3177 | |
3178 | BUG_ON(!NAPI_GRO_CB(skb)->csum_valid); | |
3179 | ||
15e2396d | 3180 | if (!nopartial) { |
b7fe10e5 TH |
3181 | NAPI_GRO_CB(skb)->gro_remcsum_start = off + hdrlen + start; |
3182 | return ptr; | |
3183 | } | |
3184 | ||
3185 | ptr = skb_gro_header_fast(skb, off); | |
3186 | if (skb_gro_header_hard(skb, off + plen)) { | |
3187 | ptr = skb_gro_header_slow(skb, off + plen, off); | |
3188 | if (!ptr) | |
3189 | return NULL; | |
15e2396d TH |
3190 | } |
3191 | ||
b7fe10e5 TH |
3192 | delta = remcsum_adjust(ptr + hdrlen, NAPI_GRO_CB(skb)->csum, |
3193 | start, offset); | |
dcdc8994 TH |
3194 | |
3195 | /* Adjust skb->csum since we changed the packet */ | |
dcdc8994 | 3196 | NAPI_GRO_CB(skb)->csum = csum_add(NAPI_GRO_CB(skb)->csum, delta); |
26c4f7da | 3197 | |
b7fe10e5 | 3198 | grc->offset = off + hdrlen + offset; |
26c4f7da | 3199 | grc->delta = delta; |
b7fe10e5 TH |
3200 | |
3201 | return ptr; | |
dcdc8994 TH |
3202 | } |
3203 | ||
26c4f7da TH |
3204 | static inline void skb_gro_remcsum_cleanup(struct sk_buff *skb, |
3205 | struct gro_remcsum *grc) | |
3206 | { | |
b7fe10e5 TH |
3207 | void *ptr; |
3208 | size_t plen = grc->offset + sizeof(u16); | |
3209 | ||
26c4f7da TH |
3210 | if (!grc->delta) |
3211 | return; | |
3212 | ||
b7fe10e5 TH |
3213 | ptr = skb_gro_header_fast(skb, grc->offset); |
3214 | if (skb_gro_header_hard(skb, grc->offset + sizeof(u16))) { | |
3215 | ptr = skb_gro_header_slow(skb, plen, grc->offset); | |
3216 | if (!ptr) | |
3217 | return; | |
3218 | } | |
3219 | ||
3220 | remcsum_unadjust((__sum16 *)ptr, grc->delta); | |
26c4f7da | 3221 | } |
dcdc8994 | 3222 | |
25393d3f | 3223 | #ifdef CONFIG_XFRM_OFFLOAD |
d4546c25 | 3224 | static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff *pp, int flush) |
25393d3f SK |
3225 | { |
3226 | if (PTR_ERR(pp) != -EINPROGRESS) | |
3227 | NAPI_GRO_CB(skb)->flush |= flush; | |
3228 | } | |
603d4cf8 | 3229 | static inline void skb_gro_flush_final_remcsum(struct sk_buff *skb, |
5cd3da4b | 3230 | struct sk_buff *pp, |
603d4cf8 SD |
3231 | int flush, |
3232 | struct gro_remcsum *grc) | |
3233 | { | |
3234 | if (PTR_ERR(pp) != -EINPROGRESS) { | |
3235 | NAPI_GRO_CB(skb)->flush |= flush; | |
3236 | skb_gro_remcsum_cleanup(skb, grc); | |
3237 | skb->remcsum_offload = 0; | |
3238 | } | |
3239 | } | |
25393d3f | 3240 | #else |
d4546c25 | 3241 | static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff *pp, int flush) |
5f114163 SK |
3242 | { |
3243 | NAPI_GRO_CB(skb)->flush |= flush; | |
3244 | } | |
603d4cf8 | 3245 | static inline void skb_gro_flush_final_remcsum(struct sk_buff *skb, |
5cd3da4b | 3246 | struct sk_buff *pp, |
603d4cf8 SD |
3247 | int flush, |
3248 | struct gro_remcsum *grc) | |
3249 | { | |
3250 | NAPI_GRO_CB(skb)->flush |= flush; | |
3251 | skb_gro_remcsum_cleanup(skb, grc); | |
3252 | skb->remcsum_offload = 0; | |
3253 | } | |
25393d3f | 3254 | #endif |
5f114163 | 3255 | |
0c4e8581 SH |
3256 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
3257 | unsigned short type, | |
3b04ddde | 3258 | const void *daddr, const void *saddr, |
95c96174 | 3259 | unsigned int len) |
0c4e8581 | 3260 | { |
f1ecfd5d | 3261 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 3262 | return 0; |
3b04ddde SH |
3263 | |
3264 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
3265 | } |
3266 | ||
b95cce35 SH |
3267 | static inline int dev_parse_header(const struct sk_buff *skb, |
3268 | unsigned char *haddr) | |
3269 | { | |
3270 | const struct net_device *dev = skb->dev; | |
3271 | ||
1b83336b | 3272 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 3273 | return 0; |
3b04ddde | 3274 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
3275 | } |
3276 | ||
e78b2915 MM |
3277 | static inline __be16 dev_parse_header_protocol(const struct sk_buff *skb) |
3278 | { | |
3279 | const struct net_device *dev = skb->dev; | |
3280 | ||
3281 | if (!dev->header_ops || !dev->header_ops->parse_protocol) | |
3282 | return 0; | |
3283 | return dev->header_ops->parse_protocol(skb); | |
3284 | } | |
3285 | ||
2793a23a WB |
3286 | /* ll_header must have at least hard_header_len allocated */ |
3287 | static inline bool dev_validate_header(const struct net_device *dev, | |
3288 | char *ll_header, int len) | |
3289 | { | |
3290 | if (likely(len >= dev->hard_header_len)) | |
3291 | return true; | |
217e6fa2 WB |
3292 | if (len < dev->min_header_len) |
3293 | return false; | |
2793a23a WB |
3294 | |
3295 | if (capable(CAP_SYS_RAWIO)) { | |
3296 | memset(ll_header + len, 0, dev->hard_header_len - len); | |
3297 | return true; | |
3298 | } | |
3299 | ||
3300 | if (dev->header_ops && dev->header_ops->validate) | |
3301 | return dev->header_ops->validate(ll_header, len); | |
3302 | ||
3303 | return false; | |
3304 | } | |
3305 | ||
d5496990 EB |
3306 | static inline bool dev_has_header(const struct net_device *dev) |
3307 | { | |
3308 | return dev->header_ops && dev->header_ops->create; | |
3309 | } | |
3310 | ||
99bbc707 | 3311 | #ifdef CONFIG_NET_FLOW_LIMIT |
5f121b9a | 3312 | #define FLOW_LIMIT_HISTORY (1 << 7) /* must be ^2 and !overflow buckets */ |
99bbc707 WB |
3313 | struct sd_flow_limit { |
3314 | u64 count; | |
3315 | unsigned int num_buckets; | |
3316 | unsigned int history_head; | |
3317 | u16 history[FLOW_LIMIT_HISTORY]; | |
3318 | u8 buckets[]; | |
3319 | }; | |
3320 | ||
3321 | extern int netdev_flow_limit_table_len; | |
3322 | #endif /* CONFIG_NET_FLOW_LIMIT */ | |
3323 | ||
1da177e4 | 3324 | /* |
5e82b4b2 | 3325 | * Incoming packets are placed on per-CPU queues |
1da177e4 | 3326 | */ |
d94d9fee | 3327 | struct softnet_data { |
1da177e4 | 3328 | struct list_head poll_list; |
6e7676c1 | 3329 | struct sk_buff_head process_queue; |
1da177e4 | 3330 | |
dee42870 | 3331 | /* stats */ |
cd7b5396 DM |
3332 | unsigned int processed; |
3333 | unsigned int time_squeeze; | |
cd7b5396 | 3334 | unsigned int received_rps; |
fd793d89 | 3335 | #ifdef CONFIG_RPS |
88751275 | 3336 | struct softnet_data *rps_ipi_list; |
4cdb1e2e ED |
3337 | #endif |
3338 | #ifdef CONFIG_NET_FLOW_LIMIT | |
3339 | struct sd_flow_limit __rcu *flow_limit; | |
3340 | #endif | |
3341 | struct Qdisc *output_queue; | |
3342 | struct Qdisc **output_queue_tailp; | |
3343 | struct sk_buff *completion_queue; | |
f53c7239 SK |
3344 | #ifdef CONFIG_XFRM_OFFLOAD |
3345 | struct sk_buff_head xfrm_backlog; | |
3346 | #endif | |
97cdcf37 FW |
3347 | /* written and read only by owning cpu: */ |
3348 | struct { | |
3349 | u16 recursion; | |
3350 | u8 more; | |
3351 | } xmit; | |
4cdb1e2e | 3352 | #ifdef CONFIG_RPS |
501e7ef5 ED |
3353 | /* input_queue_head should be written by cpu owning this struct, |
3354 | * and only read by other cpus. Worth using a cache line. | |
3355 | */ | |
3356 | unsigned int input_queue_head ____cacheline_aligned_in_smp; | |
3357 | ||
3358 | /* Elements below can be accessed between CPUs for RPS/RFS */ | |
966a9671 | 3359 | call_single_data_t csd ____cacheline_aligned_in_smp; |
88751275 ED |
3360 | struct softnet_data *rps_ipi_next; |
3361 | unsigned int cpu; | |
76cc8b13 | 3362 | unsigned int input_queue_tail; |
1e94d72f | 3363 | #endif |
95c96174 | 3364 | unsigned int dropped; |
0a9627f2 | 3365 | struct sk_buff_head input_pkt_queue; |
bea3348e | 3366 | struct napi_struct backlog; |
99bbc707 | 3367 | |
1da177e4 LT |
3368 | }; |
3369 | ||
76cc8b13 | 3370 | static inline void input_queue_head_incr(struct softnet_data *sd) |
fec5e652 TH |
3371 | { |
3372 | #ifdef CONFIG_RPS | |
76cc8b13 TH |
3373 | sd->input_queue_head++; |
3374 | #endif | |
3375 | } | |
3376 | ||
3377 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, | |
3378 | unsigned int *qtail) | |
3379 | { | |
3380 | #ifdef CONFIG_RPS | |
3381 | *qtail = ++sd->input_queue_tail; | |
fec5e652 TH |
3382 | #endif |
3383 | } | |
3384 | ||
0a9627f2 | 3385 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
1da177e4 | 3386 | |
97cdcf37 FW |
3387 | static inline int dev_recursion_level(void) |
3388 | { | |
28b05b92 | 3389 | return this_cpu_read(softnet_data.xmit.recursion); |
97cdcf37 FW |
3390 | } |
3391 | ||
fb7861d1 | 3392 | #define XMIT_RECURSION_LIMIT 8 |
97cdcf37 FW |
3393 | static inline bool dev_xmit_recursion(void) |
3394 | { | |
3395 | return unlikely(__this_cpu_read(softnet_data.xmit.recursion) > | |
3396 | XMIT_RECURSION_LIMIT); | |
3397 | } | |
3398 | ||
3399 | static inline void dev_xmit_recursion_inc(void) | |
3400 | { | |
3401 | __this_cpu_inc(softnet_data.xmit.recursion); | |
3402 | } | |
3403 | ||
3404 | static inline void dev_xmit_recursion_dec(void) | |
3405 | { | |
3406 | __this_cpu_dec(softnet_data.xmit.recursion); | |
3407 | } | |
3408 | ||
f629d208 | 3409 | void __netif_schedule(struct Qdisc *q); |
46e5da40 | 3410 | void netif_schedule_queue(struct netdev_queue *txq); |
86d804e1 | 3411 | |
fd2ea0a7 DM |
3412 | static inline void netif_tx_schedule_all(struct net_device *dev) |
3413 | { | |
3414 | unsigned int i; | |
3415 | ||
3416 | for (i = 0; i < dev->num_tx_queues; i++) | |
3417 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
3418 | } | |
3419 | ||
f9a7cbbf | 3420 | static __always_inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
d29f749e | 3421 | { |
73466498 | 3422 | clear_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3423 | } |
3424 | ||
bea3348e SH |
3425 | /** |
3426 | * netif_start_queue - allow transmit | |
3427 | * @dev: network device | |
3428 | * | |
3429 | * Allow upper layers to call the device hard_start_xmit routine. | |
3430 | */ | |
1da177e4 LT |
3431 | static inline void netif_start_queue(struct net_device *dev) |
3432 | { | |
e8a0464c | 3433 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3434 | } |
3435 | ||
fd2ea0a7 DM |
3436 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
3437 | { | |
3438 | unsigned int i; | |
3439 | ||
3440 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3441 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
3442 | netif_tx_start_queue(txq); | |
3443 | } | |
3444 | } | |
3445 | ||
46e5da40 | 3446 | void netif_tx_wake_queue(struct netdev_queue *dev_queue); |
79d16385 | 3447 | |
d29f749e DJ |
3448 | /** |
3449 | * netif_wake_queue - restart transmit | |
3450 | * @dev: network device | |
3451 | * | |
3452 | * Allow upper layers to call the device hard_start_xmit routine. | |
3453 | * Used for flow control when transmit resources are available. | |
3454 | */ | |
79d16385 DM |
3455 | static inline void netif_wake_queue(struct net_device *dev) |
3456 | { | |
e8a0464c | 3457 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3458 | } |
3459 | ||
fd2ea0a7 DM |
3460 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
3461 | { | |
3462 | unsigned int i; | |
3463 | ||
3464 | for (i = 0; i < dev->num_tx_queues; i++) { | |
3465 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
3466 | netif_tx_wake_queue(txq); | |
3467 | } | |
3468 | } | |
3469 | ||
f9a7cbbf | 3470 | static __always_inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
d29f749e | 3471 | { |
73466498 | 3472 | set_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3473 | } |
3474 | ||
bea3348e SH |
3475 | /** |
3476 | * netif_stop_queue - stop transmitted packets | |
3477 | * @dev: network device | |
3478 | * | |
3479 | * Stop upper layers calling the device hard_start_xmit routine. | |
3480 | * Used for flow control when transmit resources are unavailable. | |
3481 | */ | |
1da177e4 LT |
3482 | static inline void netif_stop_queue(struct net_device *dev) |
3483 | { | |
e8a0464c | 3484 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3485 | } |
3486 | ||
a2029240 | 3487 | void netif_tx_stop_all_queues(struct net_device *dev); |
fd2ea0a7 | 3488 | |
4d29515f | 3489 | static inline bool netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
d29f749e | 3490 | { |
73466498 | 3491 | return test_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
d29f749e DJ |
3492 | } |
3493 | ||
bea3348e SH |
3494 | /** |
3495 | * netif_queue_stopped - test if transmit queue is flowblocked | |
3496 | * @dev: network device | |
3497 | * | |
3498 | * Test if transmit queue on device is currently unable to send. | |
3499 | */ | |
4d29515f | 3500 | static inline bool netif_queue_stopped(const struct net_device *dev) |
1da177e4 | 3501 | { |
e8a0464c | 3502 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
3503 | } |
3504 | ||
4d29515f | 3505 | static inline bool netif_xmit_stopped(const struct netdev_queue *dev_queue) |
c3f26a26 | 3506 | { |
73466498 TH |
3507 | return dev_queue->state & QUEUE_STATE_ANY_XOFF; |
3508 | } | |
3509 | ||
8e2f1a63 DB |
3510 | static inline bool |
3511 | netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue) | |
73466498 TH |
3512 | { |
3513 | return dev_queue->state & QUEUE_STATE_ANY_XOFF_OR_FROZEN; | |
3514 | } | |
3515 | ||
8e2f1a63 DB |
3516 | static inline bool |
3517 | netif_xmit_frozen_or_drv_stopped(const struct netdev_queue *dev_queue) | |
3518 | { | |
3519 | return dev_queue->state & QUEUE_STATE_DRV_XOFF_OR_FROZEN; | |
3520 | } | |
3521 | ||
f57bac3c VM |
3522 | /** |
3523 | * netdev_queue_set_dql_min_limit - set dql minimum limit | |
3524 | * @dev_queue: pointer to transmit queue | |
3525 | * @min_limit: dql minimum limit | |
3526 | * | |
3527 | * Forces xmit_more() to return true until the minimum threshold | |
3528 | * defined by @min_limit is reached (or until the tx queue is | |
3529 | * empty). Warning: to be use with care, misuse will impact the | |
3530 | * latency. | |
3531 | */ | |
3532 | static inline void netdev_queue_set_dql_min_limit(struct netdev_queue *dev_queue, | |
3533 | unsigned int min_limit) | |
3534 | { | |
3535 | #ifdef CONFIG_BQL | |
3536 | dev_queue->dql.min_limit = min_limit; | |
3537 | #endif | |
3538 | } | |
3539 | ||
53511453 ED |
3540 | /** |
3541 | * netdev_txq_bql_enqueue_prefetchw - prefetch bql data for write | |
3542 | * @dev_queue: pointer to transmit queue | |
3543 | * | |
3544 | * BQL enabled drivers might use this helper in their ndo_start_xmit(), | |
5e82b4b2 | 3545 | * to give appropriate hint to the CPU. |
53511453 ED |
3546 | */ |
3547 | static inline void netdev_txq_bql_enqueue_prefetchw(struct netdev_queue *dev_queue) | |
3548 | { | |
3549 | #ifdef CONFIG_BQL | |
3550 | prefetchw(&dev_queue->dql.num_queued); | |
3551 | #endif | |
3552 | } | |
3553 | ||
3554 | /** | |
3555 | * netdev_txq_bql_complete_prefetchw - prefetch bql data for write | |
3556 | * @dev_queue: pointer to transmit queue | |
3557 | * | |
3558 | * BQL enabled drivers might use this helper in their TX completion path, | |
5e82b4b2 | 3559 | * to give appropriate hint to the CPU. |
53511453 ED |
3560 | */ |
3561 | static inline void netdev_txq_bql_complete_prefetchw(struct netdev_queue *dev_queue) | |
3562 | { | |
3563 | #ifdef CONFIG_BQL | |
3564 | prefetchw(&dev_queue->dql.limit); | |
3565 | #endif | |
3566 | } | |
3567 | ||
c5d67bd7 TH |
3568 | static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, |
3569 | unsigned int bytes) | |
3570 | { | |
114cf580 TH |
3571 | #ifdef CONFIG_BQL |
3572 | dql_queued(&dev_queue->dql, bytes); | |
b37c0fbe AD |
3573 | |
3574 | if (likely(dql_avail(&dev_queue->dql) >= 0)) | |
3575 | return; | |
3576 | ||
3577 | set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
3578 | ||
3579 | /* | |
3580 | * The XOFF flag must be set before checking the dql_avail below, | |
3581 | * because in netdev_tx_completed_queue we update the dql_completed | |
3582 | * before checking the XOFF flag. | |
3583 | */ | |
3584 | smp_mb(); | |
3585 | ||
3586 | /* check again in case another CPU has just made room avail */ | |
3587 | if (unlikely(dql_avail(&dev_queue->dql) >= 0)) | |
3588 | clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); | |
114cf580 | 3589 | #endif |
c5d67bd7 TH |
3590 | } |
3591 | ||
3e59020a ED |
3592 | /* Variant of netdev_tx_sent_queue() for drivers that are aware |
3593 | * that they should not test BQL status themselves. | |
3594 | * We do want to change __QUEUE_STATE_STACK_XOFF only for the last | |
3595 | * skb of a batch. | |
3596 | * Returns true if the doorbell must be used to kick the NIC. | |
3597 | */ | |
3598 | static inline bool __netdev_tx_sent_queue(struct netdev_queue *dev_queue, | |
3599 | unsigned int bytes, | |
3600 | bool xmit_more) | |
3601 | { | |
3602 | if (xmit_more) { | |
3603 | #ifdef CONFIG_BQL | |
3604 | dql_queued(&dev_queue->dql, bytes); | |
3605 | #endif | |
3606 | return netif_tx_queue_stopped(dev_queue); | |
3607 | } | |
3608 | netdev_tx_sent_queue(dev_queue, bytes); | |
3609 | return true; | |
3610 | } | |
3611 | ||
0042d0c8 FF |
3612 | /** |
3613 | * netdev_sent_queue - report the number of bytes queued to hardware | |
3614 | * @dev: network device | |
3615 | * @bytes: number of bytes queued to the hardware device queue | |
3616 | * | |
3617 | * Report the number of bytes queued for sending/completion to the network | |
3618 | * device hardware queue. @bytes should be a good approximation and should | |
3619 | * exactly match netdev_completed_queue() @bytes | |
3620 | */ | |
c5d67bd7 TH |
3621 | static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes) |
3622 | { | |
3623 | netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes); | |
3624 | } | |
3625 | ||
620344c4 HK |
3626 | static inline bool __netdev_sent_queue(struct net_device *dev, |
3627 | unsigned int bytes, | |
3628 | bool xmit_more) | |
3629 | { | |
3630 | return __netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes, | |
3631 | xmit_more); | |
3632 | } | |
3633 | ||
c5d67bd7 | 3634 | static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue, |
95c96174 | 3635 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 | 3636 | { |
114cf580 | 3637 | #ifdef CONFIG_BQL |
b37c0fbe AD |
3638 | if (unlikely(!bytes)) |
3639 | return; | |
3640 | ||
3641 | dql_completed(&dev_queue->dql, bytes); | |
3642 | ||
3643 | /* | |
3644 | * Without the memory barrier there is a small possiblity that | |
3645 | * netdev_tx_sent_queue will miss the update and cause the queue to | |
3646 | * be stopped forever | |
3647 | */ | |
3648 | smp_mb(); | |
3649 | ||
f3acd33d | 3650 | if (unlikely(dql_avail(&dev_queue->dql) < 0)) |
b37c0fbe AD |
3651 | return; |
3652 | ||
3653 | if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state)) | |
3654 | netif_schedule_queue(dev_queue); | |
114cf580 | 3655 | #endif |
c5d67bd7 TH |
3656 | } |
3657 | ||
0042d0c8 FF |
3658 | /** |
3659 | * netdev_completed_queue - report bytes and packets completed by device | |
3660 | * @dev: network device | |
3661 | * @pkts: actual number of packets sent over the medium | |
3662 | * @bytes: actual number of bytes sent over the medium | |
3663 | * | |
3664 | * Report the number of bytes and packets transmitted by the network device | |
3665 | * hardware queue over the physical medium, @bytes must exactly match the | |
3666 | * @bytes amount passed to netdev_sent_queue() | |
3667 | */ | |
c5d67bd7 | 3668 | static inline void netdev_completed_queue(struct net_device *dev, |
95c96174 | 3669 | unsigned int pkts, unsigned int bytes) |
c5d67bd7 TH |
3670 | { |
3671 | netdev_tx_completed_queue(netdev_get_tx_queue(dev, 0), pkts, bytes); | |
3672 | } | |
3673 | ||
3674 | static inline void netdev_tx_reset_queue(struct netdev_queue *q) | |
3675 | { | |
114cf580 | 3676 | #ifdef CONFIG_BQL |
5c490354 | 3677 | clear_bit(__QUEUE_STATE_STACK_XOFF, &q->state); |
114cf580 TH |
3678 | dql_reset(&q->dql); |
3679 | #endif | |
c5d67bd7 TH |
3680 | } |
3681 | ||
0042d0c8 FF |
3682 | /** |
3683 | * netdev_reset_queue - reset the packets and bytes count of a network device | |
3684 | * @dev_queue: network device | |
3685 | * | |
3686 | * Reset the bytes and packet count of a network device and clear the | |
3687 | * software flow control OFF bit for this network device | |
3688 | */ | |
c5d67bd7 TH |
3689 | static inline void netdev_reset_queue(struct net_device *dev_queue) |
3690 | { | |
3691 | netdev_tx_reset_queue(netdev_get_tx_queue(dev_queue, 0)); | |
c3f26a26 DM |
3692 | } |
3693 | ||
b9507bda DB |
3694 | /** |
3695 | * netdev_cap_txqueue - check if selected tx queue exceeds device queues | |
3696 | * @dev: network device | |
3697 | * @queue_index: given tx queue index | |
3698 | * | |
3699 | * Returns 0 if given tx queue index >= number of device tx queues, | |
3700 | * otherwise returns the originally passed tx queue index. | |
3701 | */ | |
3702 | static inline u16 netdev_cap_txqueue(struct net_device *dev, u16 queue_index) | |
3703 | { | |
3704 | if (unlikely(queue_index >= dev->real_num_tx_queues)) { | |
3705 | net_warn_ratelimited("%s selects TX queue %d, but real number of TX queues is %d\n", | |
3706 | dev->name, queue_index, | |
3707 | dev->real_num_tx_queues); | |
3708 | return 0; | |
3709 | } | |
3710 | ||
3711 | return queue_index; | |
3712 | } | |
3713 | ||
bea3348e SH |
3714 | /** |
3715 | * netif_running - test if up | |
3716 | * @dev: network device | |
3717 | * | |
3718 | * Test if the device has been brought up. | |
3719 | */ | |
4d29515f | 3720 | static inline bool netif_running(const struct net_device *dev) |
1da177e4 LT |
3721 | { |
3722 | return test_bit(__LINK_STATE_START, &dev->state); | |
3723 | } | |
3724 | ||
f25f4e44 | 3725 | /* |
5e82b4b2 | 3726 | * Routines to manage the subqueues on a device. We only need start, |
f25f4e44 PWJ |
3727 | * stop, and a check if it's stopped. All other device management is |
3728 | * done at the overall netdevice level. | |
3729 | * Also test the device if we're multiqueue. | |
3730 | */ | |
bea3348e SH |
3731 | |
3732 | /** | |
3733 | * netif_start_subqueue - allow sending packets on subqueue | |
3734 | * @dev: network device | |
3735 | * @queue_index: sub queue index | |
3736 | * | |
3737 | * Start individual transmit queue of a device with multiple transmit queues. | |
3738 | */ | |
f25f4e44 PWJ |
3739 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
3740 | { | |
fd2ea0a7 | 3741 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3742 | |
3743 | netif_tx_start_queue(txq); | |
f25f4e44 PWJ |
3744 | } |
3745 | ||
bea3348e SH |
3746 | /** |
3747 | * netif_stop_subqueue - stop sending packets on subqueue | |
3748 | * @dev: network device | |
3749 | * @queue_index: sub queue index | |
3750 | * | |
3751 | * Stop individual transmit queue of a device with multiple transmit queues. | |
3752 | */ | |
f25f4e44 PWJ |
3753 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
3754 | { | |
fd2ea0a7 | 3755 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f | 3756 | netif_tx_stop_queue(txq); |
f25f4e44 PWJ |
3757 | } |
3758 | ||
bea3348e | 3759 | /** |
270f3385 | 3760 | * __netif_subqueue_stopped - test status of subqueue |
bea3348e SH |
3761 | * @dev: network device |
3762 | * @queue_index: sub queue index | |
3763 | * | |
3764 | * Check individual transmit queue of a device with multiple transmit queues. | |
3765 | */ | |
4d29515f DM |
3766 | static inline bool __netif_subqueue_stopped(const struct net_device *dev, |
3767 | u16 queue_index) | |
f25f4e44 | 3768 | { |
fd2ea0a7 | 3769 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
3770 | |
3771 | return netif_tx_queue_stopped(txq); | |
f25f4e44 PWJ |
3772 | } |
3773 | ||
270f3385 MCC |
3774 | /** |
3775 | * netif_subqueue_stopped - test status of subqueue | |
3776 | * @dev: network device | |
3777 | * @skb: sub queue buffer pointer | |
3778 | * | |
3779 | * Check individual transmit queue of a device with multiple transmit queues. | |
3780 | */ | |
4d29515f DM |
3781 | static inline bool netif_subqueue_stopped(const struct net_device *dev, |
3782 | struct sk_buff *skb) | |
668f895a PE |
3783 | { |
3784 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
3785 | } | |
bea3348e | 3786 | |
738b35cc FF |
3787 | /** |
3788 | * netif_wake_subqueue - allow sending packets on subqueue | |
3789 | * @dev: network device | |
3790 | * @queue_index: sub queue index | |
3791 | * | |
3792 | * Resume individual transmit queue of a device with multiple transmit queues. | |
3793 | */ | |
3794 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) | |
3795 | { | |
3796 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); | |
3797 | ||
3798 | netif_tx_wake_queue(txq); | |
3799 | } | |
f25f4e44 | 3800 | |
537c00de | 3801 | #ifdef CONFIG_XPS |
53af53ae | 3802 | int netif_set_xps_queue(struct net_device *dev, const struct cpumask *mask, |
f629d208 | 3803 | u16 index); |
80d19669 | 3804 | int __netif_set_xps_queue(struct net_device *dev, const unsigned long *mask, |
044ab86d | 3805 | u16 index, enum xps_map_type type); |
80d19669 AN |
3806 | |
3807 | /** | |
3808 | * netif_attr_test_mask - Test a CPU or Rx queue set in a mask | |
3809 | * @j: CPU/Rx queue index | |
3810 | * @mask: bitmask of all cpus/rx queues | |
3811 | * @nr_bits: number of bits in the bitmask | |
3812 | * | |
3813 | * Test if a CPU or Rx queue index is set in a mask of all CPU/Rx queues. | |
3814 | */ | |
3815 | static inline bool netif_attr_test_mask(unsigned long j, | |
3816 | const unsigned long *mask, | |
3817 | unsigned int nr_bits) | |
3818 | { | |
3819 | cpu_max_bits_warn(j, nr_bits); | |
3820 | return test_bit(j, mask); | |
3821 | } | |
3822 | ||
3823 | /** | |
3824 | * netif_attr_test_online - Test for online CPU/Rx queue | |
3825 | * @j: CPU/Rx queue index | |
3826 | * @online_mask: bitmask for CPUs/Rx queues that are online | |
3827 | * @nr_bits: number of bits in the bitmask | |
3828 | * | |
3829 | * Returns true if a CPU/Rx queue is online. | |
3830 | */ | |
3831 | static inline bool netif_attr_test_online(unsigned long j, | |
3832 | const unsigned long *online_mask, | |
3833 | unsigned int nr_bits) | |
3834 | { | |
3835 | cpu_max_bits_warn(j, nr_bits); | |
3836 | ||
3837 | if (online_mask) | |
3838 | return test_bit(j, online_mask); | |
3839 | ||
3840 | return (j < nr_bits); | |
3841 | } | |
3842 | ||
3843 | /** | |
3844 | * netif_attrmask_next - get the next CPU/Rx queue in a cpu/Rx queues mask | |
3845 | * @n: CPU/Rx queue index | |
3846 | * @srcp: the cpumask/Rx queue mask pointer | |
3847 | * @nr_bits: number of bits in the bitmask | |
3848 | * | |
3849 | * Returns >= nr_bits if no further CPUs/Rx queues set. | |
3850 | */ | |
3851 | static inline unsigned int netif_attrmask_next(int n, const unsigned long *srcp, | |
3852 | unsigned int nr_bits) | |
3853 | { | |
3854 | /* -1 is a legal arg here. */ | |
3855 | if (n != -1) | |
3856 | cpu_max_bits_warn(n, nr_bits); | |
3857 | ||
3858 | if (srcp) | |
3859 | return find_next_bit(srcp, nr_bits, n + 1); | |
3860 | ||
3861 | return n + 1; | |
3862 | } | |
3863 | ||
3864 | /** | |
a1fa83bd | 3865 | * netif_attrmask_next_and - get the next CPU/Rx queue in \*src1p & \*src2p |
80d19669 AN |
3866 | * @n: CPU/Rx queue index |
3867 | * @src1p: the first CPUs/Rx queues mask pointer | |
3868 | * @src2p: the second CPUs/Rx queues mask pointer | |
3869 | * @nr_bits: number of bits in the bitmask | |
3870 | * | |
3871 | * Returns >= nr_bits if no further CPUs/Rx queues set in both. | |
3872 | */ | |
3873 | static inline int netif_attrmask_next_and(int n, const unsigned long *src1p, | |
3874 | const unsigned long *src2p, | |
3875 | unsigned int nr_bits) | |
3876 | { | |
3877 | /* -1 is a legal arg here. */ | |
3878 | if (n != -1) | |
3879 | cpu_max_bits_warn(n, nr_bits); | |
3880 | ||
3881 | if (src1p && src2p) | |
3882 | return find_next_and_bit(src1p, src2p, nr_bits, n + 1); | |
3883 | else if (src1p) | |
3884 | return find_next_bit(src1p, nr_bits, n + 1); | |
3885 | else if (src2p) | |
3886 | return find_next_bit(src2p, nr_bits, n + 1); | |
3887 | ||
3888 | return n + 1; | |
3889 | } | |
537c00de AD |
3890 | #else |
3891 | static inline int netif_set_xps_queue(struct net_device *dev, | |
3573540c | 3892 | const struct cpumask *mask, |
537c00de AD |
3893 | u16 index) |
3894 | { | |
3895 | return 0; | |
3896 | } | |
c9fbb2d2 KK |
3897 | |
3898 | static inline int __netif_set_xps_queue(struct net_device *dev, | |
3899 | const unsigned long *mask, | |
044ab86d | 3900 | u16 index, enum xps_map_type type) |
c9fbb2d2 KK |
3901 | { |
3902 | return 0; | |
3903 | } | |
537c00de AD |
3904 | #endif |
3905 | ||
bea3348e SH |
3906 | /** |
3907 | * netif_is_multiqueue - test if device has multiple transmit queues | |
3908 | * @dev: network device | |
3909 | * | |
3910 | * Check if device has multiple transmit queues | |
bea3348e | 3911 | */ |
4d29515f | 3912 | static inline bool netif_is_multiqueue(const struct net_device *dev) |
f25f4e44 | 3913 | { |
a02cec21 | 3914 | return dev->num_tx_queues > 1; |
f25f4e44 | 3915 | } |
1da177e4 | 3916 | |
f629d208 | 3917 | int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq); |
f0796d5c | 3918 | |
a953be53 | 3919 | #ifdef CONFIG_SYSFS |
f629d208 | 3920 | int netif_set_real_num_rx_queues(struct net_device *dev, unsigned int rxq); |
62fe0b40 BH |
3921 | #else |
3922 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, | |
c29c2ebd | 3923 | unsigned int rxqs) |
62fe0b40 | 3924 | { |
c29c2ebd | 3925 | dev->real_num_rx_queues = rxqs; |
62fe0b40 BH |
3926 | return 0; |
3927 | } | |
3928 | #endif | |
271e5b7d JK |
3929 | int netif_set_real_num_queues(struct net_device *dev, |
3930 | unsigned int txq, unsigned int rxq); | |
62fe0b40 | 3931 | |
65073a67 DB |
3932 | static inline struct netdev_rx_queue * |
3933 | __netif_get_rx_queue(struct net_device *dev, unsigned int rxq) | |
3934 | { | |
3935 | return dev->_rx + rxq; | |
3936 | } | |
3937 | ||
a953be53 MD |
3938 | #ifdef CONFIG_SYSFS |
3939 | static inline unsigned int get_netdev_rx_queue_index( | |
3940 | struct netdev_rx_queue *queue) | |
3941 | { | |
3942 | struct net_device *dev = queue->dev; | |
3943 | int index = queue - dev->_rx; | |
3944 | ||
3945 | BUG_ON(index >= dev->num_rx_queues); | |
3946 | return index; | |
3947 | } | |
3948 | #endif | |
3949 | ||
16917b87 | 3950 | #define DEFAULT_MAX_NUM_RSS_QUEUES (8) |
f629d208 | 3951 | int netif_get_num_default_rss_queues(void); |
16917b87 | 3952 | |
e6247027 ED |
3953 | enum skb_free_reason { |
3954 | SKB_REASON_CONSUMED, | |
3955 | SKB_REASON_DROPPED, | |
3956 | }; | |
3957 | ||
3958 | void __dev_kfree_skb_irq(struct sk_buff *skb, enum skb_free_reason reason); | |
3959 | void __dev_kfree_skb_any(struct sk_buff *skb, enum skb_free_reason reason); | |
1da177e4 | 3960 | |
e6247027 ED |
3961 | /* |
3962 | * It is not allowed to call kfree_skb() or consume_skb() from hardware | |
3963 | * interrupt context or with hardware interrupts being disabled. | |
afa79d08 | 3964 | * (in_hardirq() || irqs_disabled()) |
e6247027 ED |
3965 | * |
3966 | * We provide four helpers that can be used in following contexts : | |
3967 | * | |
3968 | * dev_kfree_skb_irq(skb) when caller drops a packet from irq context, | |
3969 | * replacing kfree_skb(skb) | |
3970 | * | |
3971 | * dev_consume_skb_irq(skb) when caller consumes a packet from irq context. | |
3972 | * Typically used in place of consume_skb(skb) in TX completion path | |
3973 | * | |
3974 | * dev_kfree_skb_any(skb) when caller doesn't know its current irq context, | |
3975 | * replacing kfree_skb(skb) | |
3976 | * | |
3977 | * dev_consume_skb_any(skb) when caller doesn't know its current irq context, | |
3978 | * and consumed a packet. Used in place of consume_skb(skb) | |
1da177e4 | 3979 | */ |
e6247027 ED |
3980 | static inline void dev_kfree_skb_irq(struct sk_buff *skb) |
3981 | { | |
3982 | __dev_kfree_skb_irq(skb, SKB_REASON_DROPPED); | |
3983 | } | |
3984 | ||
3985 | static inline void dev_consume_skb_irq(struct sk_buff *skb) | |
3986 | { | |
3987 | __dev_kfree_skb_irq(skb, SKB_REASON_CONSUMED); | |
3988 | } | |
3989 | ||
3990 | static inline void dev_kfree_skb_any(struct sk_buff *skb) | |
3991 | { | |
3992 | __dev_kfree_skb_any(skb, SKB_REASON_DROPPED); | |
3993 | } | |
3994 | ||
3995 | static inline void dev_consume_skb_any(struct sk_buff *skb) | |
3996 | { | |
3997 | __dev_kfree_skb_any(skb, SKB_REASON_CONSUMED); | |
3998 | } | |
1da177e4 | 3999 | |
fe21cb91 KKD |
4000 | u32 bpf_prog_run_generic_xdp(struct sk_buff *skb, struct xdp_buff *xdp, |
4001 | struct bpf_prog *xdp_prog); | |
7c497478 JW |
4002 | void generic_xdp_tx(struct sk_buff *skb, struct bpf_prog *xdp_prog); |
4003 | int do_xdp_generic(struct bpf_prog *xdp_prog, struct sk_buff *skb); | |
f629d208 JP |
4004 | int netif_rx(struct sk_buff *skb); |
4005 | int netif_rx_ni(struct sk_buff *skb); | |
c11171a4 | 4006 | int netif_rx_any_context(struct sk_buff *skb); |
04eb4489 | 4007 | int netif_receive_skb(struct sk_buff *skb); |
1c601d82 | 4008 | int netif_receive_skb_core(struct sk_buff *skb); |
f6ad8c1b | 4009 | void netif_receive_skb_list(struct list_head *head); |
f629d208 JP |
4010 | gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb); |
4011 | void napi_gro_flush(struct napi_struct *napi, bool flush_old); | |
4012 | struct sk_buff *napi_get_frags(struct napi_struct *napi); | |
4013 | gro_result_t napi_gro_frags(struct napi_struct *napi); | |
bf5a755f JC |
4014 | struct packet_offload *gro_find_receive_by_type(__be16 type); |
4015 | struct packet_offload *gro_find_complete_by_type(__be16 type); | |
76620aaf HX |
4016 | |
4017 | static inline void napi_free_frags(struct napi_struct *napi) | |
4018 | { | |
4019 | kfree_skb(napi->skb); | |
4020 | napi->skb = NULL; | |
4021 | } | |
4022 | ||
24b27fc4 | 4023 | bool netdev_is_rx_handler_busy(struct net_device *dev); |
f629d208 JP |
4024 | int netdev_rx_handler_register(struct net_device *dev, |
4025 | rx_handler_func_t *rx_handler, | |
4026 | void *rx_handler_data); | |
4027 | void netdev_rx_handler_unregister(struct net_device *dev); | |
4028 | ||
4029 | bool dev_valid_name(const char *name); | |
d0efb162 PC |
4030 | static inline bool is_socket_ioctl_cmd(unsigned int cmd) |
4031 | { | |
4032 | return _IOC_TYPE(cmd) == SOCK_IOC_TYPE; | |
4033 | } | |
29c49648 AB |
4034 | int get_user_ifreq(struct ifreq *ifr, void __user **ifrdata, void __user *arg); |
4035 | int put_user_ifreq(struct ifreq *ifr, void __user *arg); | |
44c02a2c | 4036 | int dev_ioctl(struct net *net, unsigned int cmd, struct ifreq *ifr, |
a554bf96 | 4037 | void __user *data, bool *need_copyout); |
876f0bf9 | 4038 | int dev_ifconf(struct net *net, struct ifconf __user *ifc); |
a554bf96 | 4039 | int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *userdata); |
f629d208 | 4040 | unsigned int dev_get_flags(const struct net_device *); |
6d040321 PM |
4041 | int __dev_change_flags(struct net_device *dev, unsigned int flags, |
4042 | struct netlink_ext_ack *extack); | |
567c5e13 PM |
4043 | int dev_change_flags(struct net_device *dev, unsigned int flags, |
4044 | struct netlink_ext_ack *extack); | |
cb178190 DM |
4045 | void __dev_notify_flags(struct net_device *, unsigned int old_flags, |
4046 | unsigned int gchanges); | |
f629d208 JP |
4047 | int dev_change_name(struct net_device *, const char *); |
4048 | int dev_set_alias(struct net_device *, const char *, size_t); | |
6c557001 | 4049 | int dev_get_alias(const struct net_device *, char *, size_t); |
0854fa82 AV |
4050 | int __dev_change_net_namespace(struct net_device *dev, struct net *net, |
4051 | const char *pat, int new_ifindex); | |
4052 | static inline | |
eeb85a14 | 4053 | int dev_change_net_namespace(struct net_device *dev, struct net *net, |
0854fa82 AV |
4054 | const char *pat) |
4055 | { | |
4056 | return __dev_change_net_namespace(dev, net, pat, 0); | |
4057 | } | |
f51048c3 | 4058 | int __dev_set_mtu(struct net_device *, int); |
d836f5c6 ED |
4059 | int dev_validate_mtu(struct net_device *dev, int mtu, |
4060 | struct netlink_ext_ack *extack); | |
7a4c53be SH |
4061 | int dev_set_mtu_ext(struct net_device *dev, int mtu, |
4062 | struct netlink_ext_ack *extack); | |
f629d208 | 4063 | int dev_set_mtu(struct net_device *, int); |
6a643ddb | 4064 | int dev_change_tx_queue_len(struct net_device *, unsigned long); |
f629d208 | 4065 | void dev_set_group(struct net_device *, int); |
d59cdf94 PM |
4066 | int dev_pre_changeaddr_notify(struct net_device *dev, const char *addr, |
4067 | struct netlink_ext_ack *extack); | |
3a37a963 PM |
4068 | int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa, |
4069 | struct netlink_ext_ack *extack); | |
3b23a32a CW |
4070 | int dev_set_mac_address_user(struct net_device *dev, struct sockaddr *sa, |
4071 | struct netlink_ext_ack *extack); | |
4072 | int dev_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name); | |
f629d208 JP |
4073 | int dev_change_carrier(struct net_device *, bool new_carrier); |
4074 | int dev_get_phys_port_id(struct net_device *dev, | |
02637fce | 4075 | struct netdev_phys_item_id *ppid); |
db24a904 DA |
4076 | int dev_get_phys_port_name(struct net_device *dev, |
4077 | char *name, size_t len); | |
d6abc596 FF |
4078 | int dev_get_port_parent_id(struct net_device *dev, |
4079 | struct netdev_phys_item_id *ppid, bool recurse); | |
4080 | bool netdev_port_same_parent_id(struct net_device *a, struct net_device *b); | |
d746d707 | 4081 | int dev_change_proto_down(struct net_device *dev, bool proto_down); |
b5899679 | 4082 | int dev_change_proto_down_generic(struct net_device *dev, bool proto_down); |
829eb208 RP |
4083 | void dev_change_proto_down_reason(struct net_device *dev, unsigned long mask, |
4084 | u32 value); | |
f53c7239 | 4085 | struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev, bool *again); |
ce93718f DM |
4086 | struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, |
4087 | struct netdev_queue *txq, int *ret); | |
d67b9cd2 | 4088 | |
f4e63525 | 4089 | typedef int (*bpf_op_t)(struct net_device *dev, struct netdev_bpf *bpf); |
d67b9cd2 | 4090 | int dev_change_xdp_fd(struct net_device *dev, struct netlink_ext_ack *extack, |
92234c8f | 4091 | int fd, int expected_fd, u32 flags); |
aa8d3a71 | 4092 | int bpf_xdp_link_attach(const union bpf_attr *attr, struct bpf_prog *prog); |
879af96f | 4093 | u8 dev_xdp_prog_count(struct net_device *dev); |
7f0a8382 | 4094 | u32 dev_xdp_prog_id(struct net_device *dev, enum bpf_xdp_mode mode); |
aa8d3a71 | 4095 | |
a0265d28 | 4096 | int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
f629d208 | 4097 | int dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
5f7d5728 | 4098 | int dev_forward_skb_nomtu(struct net_device *dev, struct sk_buff *skb); |
f4b05d27 NA |
4099 | bool is_skb_forwardable(const struct net_device *dev, |
4100 | const struct sk_buff *skb); | |
1da177e4 | 4101 | |
5f7d5728 JDB |
4102 | static __always_inline bool __is_skb_forwardable(const struct net_device *dev, |
4103 | const struct sk_buff *skb, | |
4104 | const bool check_mtu) | |
4105 | { | |
4106 | const u32 vlan_hdr_len = 4; /* VLAN_HLEN */ | |
4107 | unsigned int len; | |
4108 | ||
4109 | if (!(dev->flags & IFF_UP)) | |
4110 | return false; | |
4111 | ||
4112 | if (!check_mtu) | |
4113 | return true; | |
4114 | ||
4115 | len = dev->mtu + dev->hard_header_len + vlan_hdr_len; | |
4116 | if (skb->len <= len) | |
4117 | return true; | |
4118 | ||
4119 | /* if TSO is enabled, we don't care about the length as the packet | |
4120 | * could be forwarded without being segmented before | |
4121 | */ | |
4122 | if (skb_is_gso(skb)) | |
4123 | return true; | |
4124 | ||
4125 | return false; | |
4126 | } | |
4127 | ||
4e3264d2 | 4128 | static __always_inline int ____dev_forward_skb(struct net_device *dev, |
5f7d5728 JDB |
4129 | struct sk_buff *skb, |
4130 | const bool check_mtu) | |
4e3264d2 MKL |
4131 | { |
4132 | if (skb_orphan_frags(skb, GFP_ATOMIC) || | |
5f7d5728 | 4133 | unlikely(!__is_skb_forwardable(dev, skb, check_mtu))) { |
4e3264d2 MKL |
4134 | atomic_long_inc(&dev->rx_dropped); |
4135 | kfree_skb(skb); | |
4136 | return NET_RX_DROP; | |
4137 | } | |
4138 | ||
ff70202b | 4139 | skb_scrub_packet(skb, !net_eq(dev_net(dev), dev_net(skb->dev))); |
4e3264d2 MKL |
4140 | skb->priority = 0; |
4141 | return 0; | |
4142 | } | |
4143 | ||
9f9a742d | 4144 | bool dev_nit_active(struct net_device *dev); |
74b20582 DA |
4145 | void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev); |
4146 | ||
20380731 | 4147 | extern int netdev_budget; |
7acf8a1e | 4148 | extern unsigned int netdev_budget_usecs; |
1da177e4 LT |
4149 | |
4150 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
f629d208 | 4151 | void netdev_run_todo(void); |
1da177e4 | 4152 | |
bea3348e SH |
4153 | /** |
4154 | * dev_put - release reference to device | |
4155 | * @dev: network device | |
4156 | * | |
9ef4429b | 4157 | * Release reference to device to allow it to be freed. |
bea3348e | 4158 | */ |
1da177e4 LT |
4159 | static inline void dev_put(struct net_device *dev) |
4160 | { | |
b37a4668 | 4161 | if (dev) { |
919067cc | 4162 | #ifdef CONFIG_PCPU_DEV_REFCNT |
b37a4668 | 4163 | this_cpu_dec(*dev->pcpu_refcnt); |
919067cc | 4164 | #else |
b37a4668 | 4165 | refcount_dec(&dev->dev_refcnt); |
919067cc | 4166 | #endif |
b37a4668 | 4167 | } |
1da177e4 LT |
4168 | } |
4169 | ||
bea3348e SH |
4170 | /** |
4171 | * dev_hold - get reference to device | |
4172 | * @dev: network device | |
4173 | * | |
9ef4429b | 4174 | * Hold reference to device to keep it from being freed. |
bea3348e | 4175 | */ |
15333061 SH |
4176 | static inline void dev_hold(struct net_device *dev) |
4177 | { | |
b37a4668 | 4178 | if (dev) { |
919067cc | 4179 | #ifdef CONFIG_PCPU_DEV_REFCNT |
b37a4668 | 4180 | this_cpu_inc(*dev->pcpu_refcnt); |
919067cc | 4181 | #else |
b37a4668 | 4182 | refcount_inc(&dev->dev_refcnt); |
919067cc | 4183 | #endif |
b37a4668 | 4184 | } |
15333061 | 4185 | } |
1da177e4 LT |
4186 | |
4187 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
4188 | * and _off may be called from IRQ context, but it is caller | |
4189 | * who is responsible for serialization of these calls. | |
b00055aa SR |
4190 | * |
4191 | * The name carrier is inappropriate, these functions should really be | |
4192 | * called netif_lowerlayer_*() because they represent the state of any | |
4193 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
4194 | */ |
4195 | ||
f629d208 JP |
4196 | void linkwatch_init_dev(struct net_device *dev); |
4197 | void linkwatch_fire_event(struct net_device *dev); | |
4198 | void linkwatch_forget_dev(struct net_device *dev); | |
1da177e4 | 4199 | |
bea3348e SH |
4200 | /** |
4201 | * netif_carrier_ok - test if carrier present | |
4202 | * @dev: network device | |
4203 | * | |
4204 | * Check if carrier is present on device | |
4205 | */ | |
4d29515f | 4206 | static inline bool netif_carrier_ok(const struct net_device *dev) |
1da177e4 LT |
4207 | { |
4208 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
4209 | } | |
4210 | ||
f629d208 | 4211 | unsigned long dev_trans_start(struct net_device *dev); |
9d21493b | 4212 | |
f629d208 | 4213 | void __netdev_watchdog_up(struct net_device *dev); |
1da177e4 | 4214 | |
f629d208 | 4215 | void netif_carrier_on(struct net_device *dev); |
f629d208 | 4216 | void netif_carrier_off(struct net_device *dev); |
490dceca | 4217 | void netif_carrier_event(struct net_device *dev); |
1da177e4 | 4218 | |
bea3348e SH |
4219 | /** |
4220 | * netif_dormant_on - mark device as dormant. | |
4221 | * @dev: network device | |
4222 | * | |
4223 | * Mark device as dormant (as per RFC2863). | |
4224 | * | |
4225 | * The dormant state indicates that the relevant interface is not | |
4226 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
4227 | * in a "pending" state, waiting for some external event. For "on- | |
4228 | * demand" interfaces, this new state identifies the situation where the | |
4229 | * interface is waiting for events to place it in the up state. | |
bea3348e | 4230 | */ |
b00055aa SR |
4231 | static inline void netif_dormant_on(struct net_device *dev) |
4232 | { | |
4233 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
4234 | linkwatch_fire_event(dev); | |
4235 | } | |
4236 | ||
bea3348e SH |
4237 | /** |
4238 | * netif_dormant_off - set device as not dormant. | |
4239 | * @dev: network device | |
4240 | * | |
4241 | * Device is not in dormant state. | |
4242 | */ | |
b00055aa SR |
4243 | static inline void netif_dormant_off(struct net_device *dev) |
4244 | { | |
4245 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
4246 | linkwatch_fire_event(dev); | |
4247 | } | |
4248 | ||
bea3348e | 4249 | /** |
8ecbc40a | 4250 | * netif_dormant - test if device is dormant |
bea3348e SH |
4251 | * @dev: network device |
4252 | * | |
8ecbc40a | 4253 | * Check if device is dormant. |
bea3348e | 4254 | */ |
4d29515f | 4255 | static inline bool netif_dormant(const struct net_device *dev) |
b00055aa SR |
4256 | { |
4257 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
4258 | } | |
4259 | ||
4260 | ||
eec517cd AL |
4261 | /** |
4262 | * netif_testing_on - mark device as under test. | |
4263 | * @dev: network device | |
4264 | * | |
4265 | * Mark device as under test (as per RFC2863). | |
4266 | * | |
4267 | * The testing state indicates that some test(s) must be performed on | |
4268 | * the interface. After completion, of the test, the interface state | |
4269 | * will change to up, dormant, or down, as appropriate. | |
4270 | */ | |
4271 | static inline void netif_testing_on(struct net_device *dev) | |
4272 | { | |
4273 | if (!test_and_set_bit(__LINK_STATE_TESTING, &dev->state)) | |
4274 | linkwatch_fire_event(dev); | |
4275 | } | |
4276 | ||
4277 | /** | |
4278 | * netif_testing_off - set device as not under test. | |
4279 | * @dev: network device | |
4280 | * | |
4281 | * Device is not in testing state. | |
4282 | */ | |
4283 | static inline void netif_testing_off(struct net_device *dev) | |
4284 | { | |
4285 | if (test_and_clear_bit(__LINK_STATE_TESTING, &dev->state)) | |
4286 | linkwatch_fire_event(dev); | |
4287 | } | |
4288 | ||
4289 | /** | |
4290 | * netif_testing - test if device is under test | |
4291 | * @dev: network device | |
4292 | * | |
4293 | * Check if device is under test | |
4294 | */ | |
4295 | static inline bool netif_testing(const struct net_device *dev) | |
4296 | { | |
4297 | return test_bit(__LINK_STATE_TESTING, &dev->state); | |
4298 | } | |
4299 | ||
4300 | ||
bea3348e SH |
4301 | /** |
4302 | * netif_oper_up - test if device is operational | |
4303 | * @dev: network device | |
4304 | * | |
4305 | * Check if carrier is operational | |
4306 | */ | |
4d29515f | 4307 | static inline bool netif_oper_up(const struct net_device *dev) |
d94d9fee | 4308 | { |
b00055aa SR |
4309 | return (dev->operstate == IF_OPER_UP || |
4310 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
4311 | } | |
4312 | ||
bea3348e SH |
4313 | /** |
4314 | * netif_device_present - is device available or removed | |
4315 | * @dev: network device | |
4316 | * | |
4317 | * Check if device has not been removed from system. | |
4318 | */ | |
7a126a43 | 4319 | static inline bool netif_device_present(const struct net_device *dev) |
1da177e4 LT |
4320 | { |
4321 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
4322 | } | |
4323 | ||
f629d208 | 4324 | void netif_device_detach(struct net_device *dev); |
1da177e4 | 4325 | |
f629d208 | 4326 | void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
4327 | |
4328 | /* | |
4329 | * Network interface message level settings | |
4330 | */ | |
1da177e4 LT |
4331 | |
4332 | enum { | |
6a94b8cc MK |
4333 | NETIF_MSG_DRV_BIT, |
4334 | NETIF_MSG_PROBE_BIT, | |
4335 | NETIF_MSG_LINK_BIT, | |
4336 | NETIF_MSG_TIMER_BIT, | |
4337 | NETIF_MSG_IFDOWN_BIT, | |
4338 | NETIF_MSG_IFUP_BIT, | |
4339 | NETIF_MSG_RX_ERR_BIT, | |
4340 | NETIF_MSG_TX_ERR_BIT, | |
4341 | NETIF_MSG_TX_QUEUED_BIT, | |
4342 | NETIF_MSG_INTR_BIT, | |
4343 | NETIF_MSG_TX_DONE_BIT, | |
4344 | NETIF_MSG_RX_STATUS_BIT, | |
4345 | NETIF_MSG_PKTDATA_BIT, | |
4346 | NETIF_MSG_HW_BIT, | |
4347 | NETIF_MSG_WOL_BIT, | |
4348 | ||
4349 | /* When you add a new bit above, update netif_msg_class_names array | |
4350 | * in net/ethtool/common.c | |
4351 | */ | |
4352 | NETIF_MSG_CLASS_COUNT, | |
1da177e4 | 4353 | }; |
6a94b8cc MK |
4354 | /* Both ethtool_ops interface and internal driver implementation use u32 */ |
4355 | static_assert(NETIF_MSG_CLASS_COUNT <= 32); | |
4356 | ||
4357 | #define __NETIF_MSG_BIT(bit) ((u32)1 << (bit)) | |
4358 | #define __NETIF_MSG(name) __NETIF_MSG_BIT(NETIF_MSG_ ## name ## _BIT) | |
4359 | ||
4360 | #define NETIF_MSG_DRV __NETIF_MSG(DRV) | |
4361 | #define NETIF_MSG_PROBE __NETIF_MSG(PROBE) | |
4362 | #define NETIF_MSG_LINK __NETIF_MSG(LINK) | |
4363 | #define NETIF_MSG_TIMER __NETIF_MSG(TIMER) | |
4364 | #define NETIF_MSG_IFDOWN __NETIF_MSG(IFDOWN) | |
4365 | #define NETIF_MSG_IFUP __NETIF_MSG(IFUP) | |
4366 | #define NETIF_MSG_RX_ERR __NETIF_MSG(RX_ERR) | |
4367 | #define NETIF_MSG_TX_ERR __NETIF_MSG(TX_ERR) | |
4368 | #define NETIF_MSG_TX_QUEUED __NETIF_MSG(TX_QUEUED) | |
4369 | #define NETIF_MSG_INTR __NETIF_MSG(INTR) | |
4370 | #define NETIF_MSG_TX_DONE __NETIF_MSG(TX_DONE) | |
4371 | #define NETIF_MSG_RX_STATUS __NETIF_MSG(RX_STATUS) | |
4372 | #define NETIF_MSG_PKTDATA __NETIF_MSG(PKTDATA) | |
4373 | #define NETIF_MSG_HW __NETIF_MSG(HW) | |
4374 | #define NETIF_MSG_WOL __NETIF_MSG(WOL) | |
1da177e4 LT |
4375 | |
4376 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
4377 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
4378 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
4379 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
4380 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
4381 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
4382 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
4383 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
4384 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
4385 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
4386 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
4387 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
4388 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
4389 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
4390 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
4391 | ||
4392 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
4393 | { | |
4394 | /* use default */ | |
4395 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
4396 | return default_msg_enable_bits; | |
4397 | if (debug_value == 0) /* no output */ | |
4398 | return 0; | |
4399 | /* set low N bits */ | |
f4d7b3e2 | 4400 | return (1U << debug_value) - 1; |
1da177e4 LT |
4401 | } |
4402 | ||
c773e847 | 4403 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 4404 | { |
c773e847 DM |
4405 | spin_lock(&txq->_xmit_lock); |
4406 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
4407 | } |
4408 | ||
5a717f4f MT |
4409 | static inline bool __netif_tx_acquire(struct netdev_queue *txq) |
4410 | { | |
4411 | __acquire(&txq->_xmit_lock); | |
4412 | return true; | |
4413 | } | |
4414 | ||
4415 | static inline void __netif_tx_release(struct netdev_queue *txq) | |
4416 | { | |
4417 | __release(&txq->_xmit_lock); | |
4418 | } | |
4419 | ||
fd2ea0a7 DM |
4420 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
4421 | { | |
4422 | spin_lock_bh(&txq->_xmit_lock); | |
4423 | txq->xmit_lock_owner = smp_processor_id(); | |
4424 | } | |
4425 | ||
4d29515f | 4426 | static inline bool __netif_tx_trylock(struct netdev_queue *txq) |
c3f26a26 | 4427 | { |
4d29515f | 4428 | bool ok = spin_trylock(&txq->_xmit_lock); |
c3f26a26 DM |
4429 | if (likely(ok)) |
4430 | txq->xmit_lock_owner = smp_processor_id(); | |
4431 | return ok; | |
4432 | } | |
4433 | ||
4434 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
4435 | { | |
4436 | txq->xmit_lock_owner = -1; | |
4437 | spin_unlock(&txq->_xmit_lock); | |
4438 | } | |
4439 | ||
4440 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
4441 | { | |
4442 | txq->xmit_lock_owner = -1; | |
4443 | spin_unlock_bh(&txq->_xmit_lock); | |
4444 | } | |
4445 | ||
08baf561 ED |
4446 | static inline void txq_trans_update(struct netdev_queue *txq) |
4447 | { | |
4448 | if (txq->xmit_lock_owner != -1) | |
4449 | txq->trans_start = jiffies; | |
4450 | } | |
4451 | ||
ba162f8e FW |
4452 | /* legacy drivers only, netdev_start_xmit() sets txq->trans_start */ |
4453 | static inline void netif_trans_update(struct net_device *dev) | |
4454 | { | |
9b36627a FW |
4455 | struct netdev_queue *txq = netdev_get_tx_queue(dev, 0); |
4456 | ||
4457 | if (txq->trans_start != jiffies) | |
4458 | txq->trans_start = jiffies; | |
ba162f8e FW |
4459 | } |
4460 | ||
d29f749e DJ |
4461 | /** |
4462 | * netif_tx_lock - grab network device transmit lock | |
4463 | * @dev: network device | |
d29f749e DJ |
4464 | * |
4465 | * Get network device transmit lock | |
4466 | */ | |
22dd7495 JHS |
4467 | static inline void netif_tx_lock(struct net_device *dev) |
4468 | { | |
e8a0464c | 4469 | unsigned int i; |
c3f26a26 | 4470 | int cpu; |
c773e847 | 4471 | |
c3f26a26 DM |
4472 | spin_lock(&dev->tx_global_lock); |
4473 | cpu = smp_processor_id(); | |
e8a0464c DM |
4474 | for (i = 0; i < dev->num_tx_queues; i++) { |
4475 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
4476 | |
4477 | /* We are the only thread of execution doing a | |
4478 | * freeze, but we have to grab the _xmit_lock in | |
4479 | * order to synchronize with threads which are in | |
4480 | * the ->hard_start_xmit() handler and already | |
4481 | * checked the frozen bit. | |
4482 | */ | |
e8a0464c | 4483 | __netif_tx_lock(txq, cpu); |
c3f26a26 DM |
4484 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
4485 | __netif_tx_unlock(txq); | |
e8a0464c | 4486 | } |
932ff279 HX |
4487 | } |
4488 | ||
4489 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
4490 | { | |
e8a0464c DM |
4491 | local_bh_disable(); |
4492 | netif_tx_lock(dev); | |
932ff279 HX |
4493 | } |
4494 | ||
932ff279 HX |
4495 | static inline void netif_tx_unlock(struct net_device *dev) |
4496 | { | |
e8a0464c DM |
4497 | unsigned int i; |
4498 | ||
4499 | for (i = 0; i < dev->num_tx_queues; i++) { | |
4500 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c773e847 | 4501 | |
c3f26a26 DM |
4502 | /* No need to grab the _xmit_lock here. If the |
4503 | * queue is not stopped for another reason, we | |
4504 | * force a schedule. | |
4505 | */ | |
4506 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
7b3d3e4f | 4507 | netif_schedule_queue(txq); |
c3f26a26 DM |
4508 | } |
4509 | spin_unlock(&dev->tx_global_lock); | |
932ff279 HX |
4510 | } |
4511 | ||
4512 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
4513 | { | |
e8a0464c DM |
4514 | netif_tx_unlock(dev); |
4515 | local_bh_enable(); | |
932ff279 HX |
4516 | } |
4517 | ||
c773e847 | 4518 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 4519 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 4520 | __netif_tx_lock(txq, cpu); \ |
5a717f4f MT |
4521 | } else { \ |
4522 | __netif_tx_acquire(txq); \ | |
22dd7495 JHS |
4523 | } \ |
4524 | } | |
4525 | ||
5efeac44 EB |
4526 | #define HARD_TX_TRYLOCK(dev, txq) \ |
4527 | (((dev->features & NETIF_F_LLTX) == 0) ? \ | |
4528 | __netif_tx_trylock(txq) : \ | |
5a717f4f | 4529 | __netif_tx_acquire(txq)) |
5efeac44 | 4530 | |
c773e847 | 4531 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 4532 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 4533 | __netif_tx_unlock(txq); \ |
5a717f4f MT |
4534 | } else { \ |
4535 | __netif_tx_release(txq); \ | |
22dd7495 JHS |
4536 | } \ |
4537 | } | |
4538 | ||
1da177e4 LT |
4539 | static inline void netif_tx_disable(struct net_device *dev) |
4540 | { | |
fd2ea0a7 | 4541 | unsigned int i; |
c3f26a26 | 4542 | int cpu; |
fd2ea0a7 | 4543 | |
c3f26a26 DM |
4544 | local_bh_disable(); |
4545 | cpu = smp_processor_id(); | |
3aa6bce9 | 4546 | spin_lock(&dev->tx_global_lock); |
fd2ea0a7 DM |
4547 | for (i = 0; i < dev->num_tx_queues; i++) { |
4548 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
4549 | |
4550 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 4551 | netif_tx_stop_queue(txq); |
c3f26a26 | 4552 | __netif_tx_unlock(txq); |
fd2ea0a7 | 4553 | } |
3aa6bce9 | 4554 | spin_unlock(&dev->tx_global_lock); |
c3f26a26 | 4555 | local_bh_enable(); |
1da177e4 LT |
4556 | } |
4557 | ||
e308a5d8 DM |
4558 | static inline void netif_addr_lock(struct net_device *dev) |
4559 | { | |
1fc70edb | 4560 | unsigned char nest_level = 0; |
e308a5d8 | 4561 | |
1fc70edb TY |
4562 | #ifdef CONFIG_LOCKDEP |
4563 | nest_level = dev->nested_level; | |
4564 | #endif | |
4565 | spin_lock_nested(&dev->addr_list_lock, nest_level); | |
845e0ebb CW |
4566 | } |
4567 | ||
e308a5d8 DM |
4568 | static inline void netif_addr_lock_bh(struct net_device *dev) |
4569 | { | |
1fc70edb TY |
4570 | unsigned char nest_level = 0; |
4571 | ||
4572 | #ifdef CONFIG_LOCKDEP | |
4573 | nest_level = dev->nested_level; | |
4574 | #endif | |
4575 | local_bh_disable(); | |
4576 | spin_lock_nested(&dev->addr_list_lock, nest_level); | |
e308a5d8 DM |
4577 | } |
4578 | ||
4579 | static inline void netif_addr_unlock(struct net_device *dev) | |
4580 | { | |
4581 | spin_unlock(&dev->addr_list_lock); | |
4582 | } | |
4583 | ||
4584 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
4585 | { | |
4586 | spin_unlock_bh(&dev->addr_list_lock); | |
4587 | } | |
4588 | ||
f001fde5 | 4589 | /* |
31278e71 | 4590 | * dev_addrs walker. Should be used only for read access. Call with |
f001fde5 JP |
4591 | * rcu_read_lock held. |
4592 | */ | |
4593 | #define for_each_dev_addr(dev, ha) \ | |
31278e71 | 4594 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
f001fde5 | 4595 | |
1da177e4 LT |
4596 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
4597 | ||
f629d208 | 4598 | void ether_setup(struct net_device *dev); |
1da177e4 LT |
4599 | |
4600 | /* Support for loadable net-drivers */ | |
f629d208 | 4601 | struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, |
c835a677 | 4602 | unsigned char name_assign_type, |
f629d208 JP |
4603 | void (*setup)(struct net_device *), |
4604 | unsigned int txqs, unsigned int rxqs); | |
c835a677 TG |
4605 | #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \ |
4606 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, 1, 1) | |
36909ea4 | 4607 | |
c835a677 TG |
4608 | #define alloc_netdev_mq(sizeof_priv, name, name_assign_type, setup, count) \ |
4609 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, count, \ | |
4610 | count) | |
36909ea4 | 4611 | |
f629d208 JP |
4612 | int register_netdev(struct net_device *dev); |
4613 | void unregister_netdev(struct net_device *dev); | |
f001fde5 | 4614 | |
cd16627f BG |
4615 | int devm_register_netdev(struct device *dev, struct net_device *ndev); |
4616 | ||
22bedad3 | 4617 | /* General hardware address lists handling functions */ |
f629d208 JP |
4618 | int __hw_addr_sync(struct netdev_hw_addr_list *to_list, |
4619 | struct netdev_hw_addr_list *from_list, int addr_len); | |
4620 | void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, | |
4621 | struct netdev_hw_addr_list *from_list, int addr_len); | |
670e5b8e AD |
4622 | int __hw_addr_sync_dev(struct netdev_hw_addr_list *list, |
4623 | struct net_device *dev, | |
4624 | int (*sync)(struct net_device *, const unsigned char *), | |
4625 | int (*unsync)(struct net_device *, | |
4626 | const unsigned char *)); | |
e7946760 IK |
4627 | int __hw_addr_ref_sync_dev(struct netdev_hw_addr_list *list, |
4628 | struct net_device *dev, | |
4629 | int (*sync)(struct net_device *, | |
4630 | const unsigned char *, int), | |
4631 | int (*unsync)(struct net_device *, | |
4632 | const unsigned char *, int)); | |
4633 | void __hw_addr_ref_unsync_dev(struct netdev_hw_addr_list *list, | |
4634 | struct net_device *dev, | |
4635 | int (*unsync)(struct net_device *, | |
4636 | const unsigned char *, int)); | |
670e5b8e AD |
4637 | void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list, |
4638 | struct net_device *dev, | |
4639 | int (*unsync)(struct net_device *, | |
4640 | const unsigned char *)); | |
f629d208 | 4641 | void __hw_addr_init(struct netdev_hw_addr_list *list); |
22bedad3 | 4642 | |
f001fde5 | 4643 | /* Functions used for device addresses handling */ |
48eab831 JK |
4644 | static inline void |
4645 | __dev_addr_set(struct net_device *dev, const u8 *addr, size_t len) | |
4646 | { | |
4647 | memcpy(dev->dev_addr, addr, len); | |
4648 | } | |
4649 | ||
4650 | static inline void dev_addr_set(struct net_device *dev, const u8 *addr) | |
4651 | { | |
4652 | __dev_addr_set(dev, addr, dev->addr_len); | |
4653 | } | |
4654 | ||
4655 | static inline void | |
4656 | dev_addr_mod(struct net_device *dev, unsigned int offset, | |
4657 | const u8 *addr, size_t len) | |
4658 | { | |
4659 | memcpy(&dev->dev_addr[offset], addr, len); | |
4660 | } | |
4661 | ||
f629d208 JP |
4662 | int dev_addr_add(struct net_device *dev, const unsigned char *addr, |
4663 | unsigned char addr_type); | |
4664 | int dev_addr_del(struct net_device *dev, const unsigned char *addr, | |
4665 | unsigned char addr_type); | |
f629d208 JP |
4666 | void dev_addr_flush(struct net_device *dev); |
4667 | int dev_addr_init(struct net_device *dev); | |
a748ee24 JP |
4668 | |
4669 | /* Functions used for unicast addresses handling */ | |
f629d208 JP |
4670 | int dev_uc_add(struct net_device *dev, const unsigned char *addr); |
4671 | int dev_uc_add_excl(struct net_device *dev, const unsigned char *addr); | |
4672 | int dev_uc_del(struct net_device *dev, const unsigned char *addr); | |
4673 | int dev_uc_sync(struct net_device *to, struct net_device *from); | |
4674 | int dev_uc_sync_multiple(struct net_device *to, struct net_device *from); | |
4675 | void dev_uc_unsync(struct net_device *to, struct net_device *from); | |
4676 | void dev_uc_flush(struct net_device *dev); | |
4677 | void dev_uc_init(struct net_device *dev); | |
f001fde5 | 4678 | |
670e5b8e AD |
4679 | /** |
4680 | * __dev_uc_sync - Synchonize device's unicast list | |
4681 | * @dev: device to sync | |
4682 | * @sync: function to call if address should be added | |
4683 | * @unsync: function to call if address should be removed | |
4684 | * | |
4685 | * Add newly added addresses to the interface, and release | |
4686 | * addresses that have been deleted. | |
5e82b4b2 | 4687 | */ |
670e5b8e AD |
4688 | static inline int __dev_uc_sync(struct net_device *dev, |
4689 | int (*sync)(struct net_device *, | |
4690 | const unsigned char *), | |
4691 | int (*unsync)(struct net_device *, | |
4692 | const unsigned char *)) | |
4693 | { | |
4694 | return __hw_addr_sync_dev(&dev->uc, dev, sync, unsync); | |
4695 | } | |
4696 | ||
4697 | /** | |
e793c0f7 | 4698 | * __dev_uc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
4699 | * @dev: device to sync |
4700 | * @unsync: function to call if address should be removed | |
4701 | * | |
4702 | * Remove all addresses that were added to the device by dev_uc_sync(). | |
5e82b4b2 | 4703 | */ |
670e5b8e AD |
4704 | static inline void __dev_uc_unsync(struct net_device *dev, |
4705 | int (*unsync)(struct net_device *, | |
4706 | const unsigned char *)) | |
4707 | { | |
4708 | __hw_addr_unsync_dev(&dev->uc, dev, unsync); | |
4709 | } | |
4710 | ||
22bedad3 | 4711 | /* Functions used for multicast addresses handling */ |
f629d208 JP |
4712 | int dev_mc_add(struct net_device *dev, const unsigned char *addr); |
4713 | int dev_mc_add_global(struct net_device *dev, const unsigned char *addr); | |
4714 | int dev_mc_add_excl(struct net_device *dev, const unsigned char *addr); | |
4715 | int dev_mc_del(struct net_device *dev, const unsigned char *addr); | |
4716 | int dev_mc_del_global(struct net_device *dev, const unsigned char *addr); | |
4717 | int dev_mc_sync(struct net_device *to, struct net_device *from); | |
4718 | int dev_mc_sync_multiple(struct net_device *to, struct net_device *from); | |
4719 | void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
4720 | void dev_mc_flush(struct net_device *dev); | |
4721 | void dev_mc_init(struct net_device *dev); | |
f001fde5 | 4722 | |
670e5b8e AD |
4723 | /** |
4724 | * __dev_mc_sync - Synchonize device's multicast list | |
4725 | * @dev: device to sync | |
4726 | * @sync: function to call if address should be added | |
4727 | * @unsync: function to call if address should be removed | |
4728 | * | |
4729 | * Add newly added addresses to the interface, and release | |
4730 | * addresses that have been deleted. | |
5e82b4b2 | 4731 | */ |
670e5b8e AD |
4732 | static inline int __dev_mc_sync(struct net_device *dev, |
4733 | int (*sync)(struct net_device *, | |
4734 | const unsigned char *), | |
4735 | int (*unsync)(struct net_device *, | |
4736 | const unsigned char *)) | |
4737 | { | |
4738 | return __hw_addr_sync_dev(&dev->mc, dev, sync, unsync); | |
4739 | } | |
4740 | ||
4741 | /** | |
e793c0f7 | 4742 | * __dev_mc_unsync - Remove synchronized addresses from device |
670e5b8e AD |
4743 | * @dev: device to sync |
4744 | * @unsync: function to call if address should be removed | |
4745 | * | |
4746 | * Remove all addresses that were added to the device by dev_mc_sync(). | |
5e82b4b2 | 4747 | */ |
670e5b8e AD |
4748 | static inline void __dev_mc_unsync(struct net_device *dev, |
4749 | int (*unsync)(struct net_device *, | |
4750 | const unsigned char *)) | |
4751 | { | |
4752 | __hw_addr_unsync_dev(&dev->mc, dev, unsync); | |
4753 | } | |
4754 | ||
4417da66 | 4755 | /* Functions used for secondary unicast and multicast support */ |
f629d208 JP |
4756 | void dev_set_rx_mode(struct net_device *dev); |
4757 | void __dev_set_rx_mode(struct net_device *dev); | |
4758 | int dev_set_promiscuity(struct net_device *dev, int inc); | |
4759 | int dev_set_allmulti(struct net_device *dev, int inc); | |
4760 | void netdev_state_change(struct net_device *dev); | |
7061eb8c | 4761 | void __netdev_notify_peers(struct net_device *dev); |
f629d208 JP |
4762 | void netdev_notify_peers(struct net_device *dev); |
4763 | void netdev_features_change(struct net_device *dev); | |
1da177e4 | 4764 | /* Load a device via the kmod */ |
f629d208 JP |
4765 | void dev_load(struct net *net, const char *name); |
4766 | struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, | |
4767 | struct rtnl_link_stats64 *storage); | |
4768 | void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64, | |
4769 | const struct net_device_stats *netdev_stats); | |
44fa32f0 HK |
4770 | void dev_fetch_sw_netstats(struct rtnl_link_stats64 *s, |
4771 | const struct pcpu_sw_netstats __percpu *netstats); | |
a1839426 | 4772 | void dev_get_tstats64(struct net_device *dev, struct rtnl_link_stats64 *s); |
eeda3fd6 | 4773 | |
1da177e4 | 4774 | extern int netdev_max_backlog; |
3b098e2d | 4775 | extern int netdev_tstamp_prequeue; |
5aa3afe1 | 4776 | extern int netdev_unregister_timeout_secs; |
1da177e4 | 4777 | extern int weight_p; |
3d48b53f MT |
4778 | extern int dev_weight_rx_bias; |
4779 | extern int dev_weight_tx_bias; | |
4780 | extern int dev_rx_weight; | |
4781 | extern int dev_tx_weight; | |
323ebb61 | 4782 | extern int gro_normal_batch; |
9ff162a8 | 4783 | |
1fc70edb TY |
4784 | enum { |
4785 | NESTED_SYNC_IMM_BIT, | |
4786 | NESTED_SYNC_TODO_BIT, | |
4787 | }; | |
4788 | ||
4789 | #define __NESTED_SYNC_BIT(bit) ((u32)1 << (bit)) | |
4790 | #define __NESTED_SYNC(name) __NESTED_SYNC_BIT(NESTED_SYNC_ ## name ## _BIT) | |
4791 | ||
4792 | #define NESTED_SYNC_IMM __NESTED_SYNC(IMM) | |
4793 | #define NESTED_SYNC_TODO __NESTED_SYNC(TODO) | |
4794 | ||
eff74233 | 4795 | struct netdev_nested_priv { |
1fc70edb | 4796 | unsigned char flags; |
eff74233 TY |
4797 | void *data; |
4798 | }; | |
4799 | ||
f629d208 | 4800 | bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev); |
44a40855 VY |
4801 | struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev, |
4802 | struct list_head **iter); | |
f629d208 JP |
4803 | struct net_device *netdev_all_upper_get_next_dev_rcu(struct net_device *dev, |
4804 | struct list_head **iter); | |
8b5be856 | 4805 | |
1fc70edb TY |
4806 | #ifdef CONFIG_LOCKDEP |
4807 | static LIST_HEAD(net_unlink_list); | |
4808 | ||
4809 | static inline void net_unlink_todo(struct net_device *dev) | |
4810 | { | |
4811 | if (list_empty(&dev->unlink_list)) | |
4812 | list_add_tail(&dev->unlink_list, &net_unlink_list); | |
4813 | } | |
4814 | #endif | |
4815 | ||
44a40855 VY |
4816 | /* iterate through upper list, must be called under RCU read lock */ |
4817 | #define netdev_for_each_upper_dev_rcu(dev, updev, iter) \ | |
4818 | for (iter = &(dev)->adj_list.upper, \ | |
4819 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter)); \ | |
4820 | updev; \ | |
4821 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter))) | |
4822 | ||
1a3f060c DA |
4823 | int netdev_walk_all_upper_dev_rcu(struct net_device *dev, |
4824 | int (*fn)(struct net_device *upper_dev, | |
eff74233 TY |
4825 | struct netdev_nested_priv *priv), |
4826 | struct netdev_nested_priv *priv); | |
1a3f060c DA |
4827 | |
4828 | bool netdev_has_upper_dev_all_rcu(struct net_device *dev, | |
4829 | struct net_device *upper_dev); | |
4830 | ||
25cc72a3 IS |
4831 | bool netdev_has_any_upper_dev(struct net_device *dev); |
4832 | ||
f629d208 JP |
4833 | void *netdev_lower_get_next_private(struct net_device *dev, |
4834 | struct list_head **iter); | |
4835 | void *netdev_lower_get_next_private_rcu(struct net_device *dev, | |
4836 | struct list_head **iter); | |
31088a11 VF |
4837 | |
4838 | #define netdev_for_each_lower_private(dev, priv, iter) \ | |
4839 | for (iter = (dev)->adj_list.lower.next, \ | |
4840 | priv = netdev_lower_get_next_private(dev, &(iter)); \ | |
4841 | priv; \ | |
4842 | priv = netdev_lower_get_next_private(dev, &(iter))) | |
4843 | ||
4844 | #define netdev_for_each_lower_private_rcu(dev, priv, iter) \ | |
4845 | for (iter = &(dev)->adj_list.lower, \ | |
4846 | priv = netdev_lower_get_next_private_rcu(dev, &(iter)); \ | |
4847 | priv; \ | |
4848 | priv = netdev_lower_get_next_private_rcu(dev, &(iter))) | |
4849 | ||
4085ebe8 VY |
4850 | void *netdev_lower_get_next(struct net_device *dev, |
4851 | struct list_head **iter); | |
7ce856aa | 4852 | |
4085ebe8 | 4853 | #define netdev_for_each_lower_dev(dev, ldev, iter) \ |
cfdd28be | 4854 | for (iter = (dev)->adj_list.lower.next, \ |
4085ebe8 VY |
4855 | ldev = netdev_lower_get_next(dev, &(iter)); \ |
4856 | ldev; \ | |
4857 | ldev = netdev_lower_get_next(dev, &(iter))) | |
4858 | ||
7151affe | 4859 | struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev, |
7ce856aa | 4860 | struct list_head **iter); |
1a3f060c DA |
4861 | int netdev_walk_all_lower_dev(struct net_device *dev, |
4862 | int (*fn)(struct net_device *lower_dev, | |
eff74233 TY |
4863 | struct netdev_nested_priv *priv), |
4864 | struct netdev_nested_priv *priv); | |
1a3f060c DA |
4865 | int netdev_walk_all_lower_dev_rcu(struct net_device *dev, |
4866 | int (*fn)(struct net_device *lower_dev, | |
eff74233 TY |
4867 | struct netdev_nested_priv *priv), |
4868 | struct netdev_nested_priv *priv); | |
1a3f060c | 4869 | |
f629d208 | 4870 | void *netdev_adjacent_get_private(struct list_head *adj_list); |
e001bfad | 4871 | void *netdev_lower_get_first_private_rcu(struct net_device *dev); |
f629d208 JP |
4872 | struct net_device *netdev_master_upper_dev_get(struct net_device *dev); |
4873 | struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev); | |
42ab19ee DA |
4874 | int netdev_upper_dev_link(struct net_device *dev, struct net_device *upper_dev, |
4875 | struct netlink_ext_ack *extack); | |
f629d208 | 4876 | int netdev_master_upper_dev_link(struct net_device *dev, |
6dffb044 | 4877 | struct net_device *upper_dev, |
42ab19ee DA |
4878 | void *upper_priv, void *upper_info, |
4879 | struct netlink_ext_ack *extack); | |
f629d208 JP |
4880 | void netdev_upper_dev_unlink(struct net_device *dev, |
4881 | struct net_device *upper_dev); | |
32b6d34f TY |
4882 | int netdev_adjacent_change_prepare(struct net_device *old_dev, |
4883 | struct net_device *new_dev, | |
4884 | struct net_device *dev, | |
4885 | struct netlink_ext_ack *extack); | |
4886 | void netdev_adjacent_change_commit(struct net_device *old_dev, | |
4887 | struct net_device *new_dev, | |
4888 | struct net_device *dev); | |
4889 | void netdev_adjacent_change_abort(struct net_device *old_dev, | |
4890 | struct net_device *new_dev, | |
4891 | struct net_device *dev); | |
5bb025fa | 4892 | void netdev_adjacent_rename_links(struct net_device *dev, char *oldname); |
f629d208 JP |
4893 | void *netdev_lower_dev_get_private(struct net_device *dev, |
4894 | struct net_device *lower_dev); | |
04d48266 JP |
4895 | void netdev_lower_state_changed(struct net_device *lower_dev, |
4896 | void *lower_state_info); | |
960fb622 ED |
4897 | |
4898 | /* RSS keys are 40 or 52 bytes long */ | |
4899 | #define NETDEV_RSS_KEY_LEN 52 | |
ba905f5e | 4900 | extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
4901 | void netdev_rss_key_fill(void *buffer, size_t len); |
4902 | ||
f629d208 | 4903 | int skb_checksum_help(struct sk_buff *skb); |
b72b5bf6 | 4904 | int skb_crc32c_csum_help(struct sk_buff *skb); |
43c26a1a DC |
4905 | int skb_csum_hwoffload_help(struct sk_buff *skb, |
4906 | const netdev_features_t features); | |
4907 | ||
f629d208 JP |
4908 | struct sk_buff *__skb_gso_segment(struct sk_buff *skb, |
4909 | netdev_features_t features, bool tx_path); | |
4910 | struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb, | |
4911 | netdev_features_t features); | |
12b0004d | 4912 | |
61bd3857 MS |
4913 | struct netdev_bonding_info { |
4914 | ifslave slave; | |
4915 | ifbond master; | |
4916 | }; | |
4917 | ||
4918 | struct netdev_notifier_bonding_info { | |
4919 | struct netdev_notifier_info info; /* must be first */ | |
4920 | struct netdev_bonding_info bonding_info; | |
4921 | }; | |
4922 | ||
4923 | void netdev_bonding_info_change(struct net_device *dev, | |
4924 | struct netdev_bonding_info *bonding_info); | |
4925 | ||
6b08d6c1 MK |
4926 | #if IS_ENABLED(CONFIG_ETHTOOL_NETLINK) |
4927 | void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data); | |
4928 | #else | |
4929 | static inline void ethtool_notify(struct net_device *dev, unsigned int cmd, | |
4930 | const void *data) | |
4931 | { | |
4932 | } | |
4933 | #endif | |
4934 | ||
12b0004d CW |
4935 | static inline |
4936 | struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features) | |
4937 | { | |
4938 | return __skb_gso_segment(skb, features, true); | |
4939 | } | |
53d6471c | 4940 | __be16 skb_network_protocol(struct sk_buff *skb, int *depth); |
ec5f0615 PS |
4941 | |
4942 | static inline bool can_checksum_protocol(netdev_features_t features, | |
4943 | __be16 protocol) | |
4944 | { | |
c8cd0989 TH |
4945 | if (protocol == htons(ETH_P_FCOE)) |
4946 | return !!(features & NETIF_F_FCOE_CRC); | |
4947 | ||
4948 | /* Assume this is an IP checksum (not SCTP CRC) */ | |
4949 | ||
4950 | if (features & NETIF_F_HW_CSUM) { | |
4951 | /* Can checksum everything */ | |
4952 | return true; | |
4953 | } | |
4954 | ||
4955 | switch (protocol) { | |
4956 | case htons(ETH_P_IP): | |
4957 | return !!(features & NETIF_F_IP_CSUM); | |
4958 | case htons(ETH_P_IPV6): | |
4959 | return !!(features & NETIF_F_IPV6_CSUM); | |
4960 | default: | |
4961 | return false; | |
4962 | } | |
ec5f0615 | 4963 | } |
12b0004d | 4964 | |
fb286bb2 | 4965 | #ifdef CONFIG_BUG |
7fe50ac8 | 4966 | void netdev_rx_csum_fault(struct net_device *dev, struct sk_buff *skb); |
fb286bb2 | 4967 | #else |
7fe50ac8 CW |
4968 | static inline void netdev_rx_csum_fault(struct net_device *dev, |
4969 | struct sk_buff *skb) | |
fb286bb2 HX |
4970 | { |
4971 | } | |
4972 | #endif | |
1da177e4 | 4973 | /* rx skb timestamps */ |
f629d208 JP |
4974 | void net_enable_timestamp(void); |
4975 | void net_disable_timestamp(void); | |
1da177e4 | 4976 | |
20380731 | 4977 | #ifdef CONFIG_PROC_FS |
f629d208 | 4978 | int __init dev_proc_init(void); |
900ff8c6 CW |
4979 | #else |
4980 | #define dev_proc_init() 0 | |
20380731 ACM |
4981 | #endif |
4982 | ||
4798248e | 4983 | static inline netdev_tx_t __netdev_start_xmit(const struct net_device_ops *ops, |
fa2dbdc2 DM |
4984 | struct sk_buff *skb, struct net_device *dev, |
4985 | bool more) | |
4798248e | 4986 | { |
6b16f9ee | 4987 | __this_cpu_write(softnet_data.xmit.more, more); |
0b725a2c | 4988 | return ops->ndo_start_xmit(skb, dev); |
4798248e DM |
4989 | } |
4990 | ||
97cdcf37 FW |
4991 | static inline bool netdev_xmit_more(void) |
4992 | { | |
4993 | return __this_cpu_read(softnet_data.xmit.more); | |
4994 | } | |
4995 | ||
10b3ad8c | 4996 | static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev, |
fa2dbdc2 | 4997 | struct netdev_queue *txq, bool more) |
4798248e DM |
4998 | { |
4999 | const struct net_device_ops *ops = dev->netdev_ops; | |
2183435c | 5000 | netdev_tx_t rc; |
4798248e | 5001 | |
fa2dbdc2 | 5002 | rc = __netdev_start_xmit(ops, skb, dev, more); |
10b3ad8c DM |
5003 | if (rc == NETDEV_TX_OK) |
5004 | txq_trans_update(txq); | |
5005 | ||
5006 | return rc; | |
4798248e DM |
5007 | } |
5008 | ||
b793dc5c | 5009 | int netdev_class_create_file_ns(const struct class_attribute *class_attr, |
42a2d923 | 5010 | const void *ns); |
b793dc5c | 5011 | void netdev_class_remove_file_ns(const struct class_attribute *class_attr, |
42a2d923 | 5012 | const void *ns); |
58292cbe | 5013 | |
737aec57 | 5014 | extern const struct kobj_ns_type_operations net_ns_type_operations; |
04600794 | 5015 | |
f629d208 | 5016 | const char *netdev_drivername(const struct net_device *dev); |
6579e57b | 5017 | |
f629d208 | 5018 | void linkwatch_run_queue(void); |
20380731 | 5019 | |
da08143b MK |
5020 | static inline netdev_features_t netdev_intersect_features(netdev_features_t f1, |
5021 | netdev_features_t f2) | |
5022 | { | |
c8cd0989 TH |
5023 | if ((f1 ^ f2) & NETIF_F_HW_CSUM) { |
5024 | if (f1 & NETIF_F_HW_CSUM) | |
b6a0e72a | 5025 | f1 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 5026 | else |
b6a0e72a | 5027 | f2 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); |
c8cd0989 | 5028 | } |
da08143b | 5029 | |
c8cd0989 | 5030 | return f1 & f2; |
da08143b MK |
5031 | } |
5032 | ||
c8f44aff MM |
5033 | static inline netdev_features_t netdev_get_wanted_features( |
5034 | struct net_device *dev) | |
5455c699 MM |
5035 | { |
5036 | return (dev->features & ~dev->hw_features) | dev->wanted_features; | |
5037 | } | |
c8f44aff MM |
5038 | netdev_features_t netdev_increment_features(netdev_features_t all, |
5039 | netdev_features_t one, netdev_features_t mask); | |
b0ce3508 ED |
5040 | |
5041 | /* Allow TSO being used on stacked device : | |
5042 | * Performing the GSO segmentation before last device | |
5043 | * is a performance improvement. | |
5044 | */ | |
5045 | static inline netdev_features_t netdev_add_tso_features(netdev_features_t features, | |
5046 | netdev_features_t mask) | |
5047 | { | |
5048 | return netdev_increment_features(features, NETIF_F_ALL_TSO, mask); | |
5049 | } | |
5050 | ||
6cb6a27c | 5051 | int __netdev_update_features(struct net_device *dev); |
5455c699 | 5052 | void netdev_update_features(struct net_device *dev); |
afe12cc8 | 5053 | void netdev_change_features(struct net_device *dev); |
7f353bf2 | 5054 | |
fc4a7489 PM |
5055 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
5056 | struct net_device *dev); | |
5057 | ||
e38f3025 TM |
5058 | netdev_features_t passthru_features_check(struct sk_buff *skb, |
5059 | struct net_device *dev, | |
5060 | netdev_features_t features); | |
c1e756bf | 5061 | netdev_features_t netif_skb_features(struct sk_buff *skb); |
58e998c6 | 5062 | |
4d29515f | 5063 | static inline bool net_gso_ok(netdev_features_t features, int gso_type) |
576a30eb | 5064 | { |
7b748340 | 5065 | netdev_features_t feature = (netdev_features_t)gso_type << NETIF_F_GSO_SHIFT; |
0345e186 MM |
5066 | |
5067 | /* check flags correspondence */ | |
5068 | BUILD_BUG_ON(SKB_GSO_TCPV4 != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT)); | |
0345e186 MM |
5069 | BUILD_BUG_ON(SKB_GSO_DODGY != (NETIF_F_GSO_ROBUST >> NETIF_F_GSO_SHIFT)); |
5070 | BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT)); | |
cbc53e08 | 5071 | BUILD_BUG_ON(SKB_GSO_TCP_FIXEDID != (NETIF_F_TSO_MANGLEID >> NETIF_F_GSO_SHIFT)); |
0345e186 MM |
5072 | BUILD_BUG_ON(SKB_GSO_TCPV6 != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT)); |
5073 | BUILD_BUG_ON(SKB_GSO_FCOE != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
5074 | BUILD_BUG_ON(SKB_GSO_GRE != (NETIF_F_GSO_GRE >> NETIF_F_GSO_SHIFT)); |
5075 | BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT)); | |
7e13318d TH |
5076 | BUILD_BUG_ON(SKB_GSO_IPXIP4 != (NETIF_F_GSO_IPXIP4 >> NETIF_F_GSO_SHIFT)); |
5077 | BUILD_BUG_ON(SKB_GSO_IPXIP6 != (NETIF_F_GSO_IPXIP6 >> NETIF_F_GSO_SHIFT)); | |
4b28252c TH |
5078 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT)); |
5079 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT)); | |
802ab55a | 5080 | BUILD_BUG_ON(SKB_GSO_PARTIAL != (NETIF_F_GSO_PARTIAL >> NETIF_F_GSO_SHIFT)); |
e585f236 | 5081 | BUILD_BUG_ON(SKB_GSO_TUNNEL_REMCSUM != (NETIF_F_GSO_TUNNEL_REMCSUM >> NETIF_F_GSO_SHIFT)); |
90017acc | 5082 | BUILD_BUG_ON(SKB_GSO_SCTP != (NETIF_F_GSO_SCTP >> NETIF_F_GSO_SHIFT)); |
c7ef8f0c | 5083 | BUILD_BUG_ON(SKB_GSO_ESP != (NETIF_F_GSO_ESP >> NETIF_F_GSO_SHIFT)); |
0c19f846 | 5084 | BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_GSO_UDP >> NETIF_F_GSO_SHIFT)); |
83aa025f | 5085 | BUILD_BUG_ON(SKB_GSO_UDP_L4 != (NETIF_F_GSO_UDP_L4 >> NETIF_F_GSO_SHIFT)); |
3b335832 | 5086 | BUILD_BUG_ON(SKB_GSO_FRAGLIST != (NETIF_F_GSO_FRAGLIST >> NETIF_F_GSO_SHIFT)); |
0345e186 | 5087 | |
d6b4991a | 5088 | return (features & feature) == feature; |
576a30eb HX |
5089 | } |
5090 | ||
4d29515f | 5091 | static inline bool skb_gso_ok(struct sk_buff *skb, netdev_features_t features) |
bcd76111 | 5092 | { |
278b2513 | 5093 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
21dc3301 | 5094 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
bcd76111 HX |
5095 | } |
5096 | ||
8b86a61d | 5097 | static inline bool netif_needs_gso(struct sk_buff *skb, |
4d29515f | 5098 | netdev_features_t features) |
7967168c | 5099 | { |
fc741216 | 5100 | return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || |
cdbee74c YZ |
5101 | unlikely((skb->ip_summed != CHECKSUM_PARTIAL) && |
5102 | (skb->ip_summed != CHECKSUM_UNNECESSARY))); | |
7967168c HX |
5103 | } |
5104 | ||
82cc1a7a PWJ |
5105 | static inline void netif_set_gso_max_size(struct net_device *dev, |
5106 | unsigned int size) | |
5107 | { | |
5108 | dev->gso_max_size = size; | |
5109 | } | |
5110 | ||
7a7ffbab WCC |
5111 | static inline void skb_gso_error_unwind(struct sk_buff *skb, __be16 protocol, |
5112 | int pulled_hlen, u16 mac_offset, | |
5113 | int mac_len) | |
5114 | { | |
5115 | skb->protocol = protocol; | |
5116 | skb->encapsulation = 1; | |
5117 | skb_push(skb, pulled_hlen); | |
5118 | skb_reset_transport_header(skb); | |
5119 | skb->mac_header = mac_offset; | |
5120 | skb->network_header = skb->mac_header + mac_len; | |
5121 | skb->mac_len = mac_len; | |
5122 | } | |
5123 | ||
3c175784 SD |
5124 | static inline bool netif_is_macsec(const struct net_device *dev) |
5125 | { | |
5126 | return dev->priv_flags & IFF_MACSEC; | |
5127 | } | |
5128 | ||
b618aaa9 | 5129 | static inline bool netif_is_macvlan(const struct net_device *dev) |
a6cc0cfa JF |
5130 | { |
5131 | return dev->priv_flags & IFF_MACVLAN; | |
5132 | } | |
5133 | ||
b618aaa9 | 5134 | static inline bool netif_is_macvlan_port(const struct net_device *dev) |
2f33e7d5 MB |
5135 | { |
5136 | return dev->priv_flags & IFF_MACVLAN_PORT; | |
5137 | } | |
5138 | ||
b618aaa9 | 5139 | static inline bool netif_is_bond_master(const struct net_device *dev) |
8a7fbfab | 5140 | { |
5141 | return dev->flags & IFF_MASTER && dev->priv_flags & IFF_BONDING; | |
5142 | } | |
5143 | ||
b618aaa9 | 5144 | static inline bool netif_is_bond_slave(const struct net_device *dev) |
1765a575 JP |
5145 | { |
5146 | return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING; | |
5147 | } | |
5148 | ||
3bdc0eba BG |
5149 | static inline bool netif_supports_nofcs(struct net_device *dev) |
5150 | { | |
5151 | return dev->priv_flags & IFF_SUPP_NOFCS; | |
5152 | } | |
5153 | ||
d5256083 DB |
5154 | static inline bool netif_has_l3_rx_handler(const struct net_device *dev) |
5155 | { | |
5156 | return dev->priv_flags & IFF_L3MDEV_RX_HANDLER; | |
5157 | } | |
5158 | ||
007979ea | 5159 | static inline bool netif_is_l3_master(const struct net_device *dev) |
4e3c8992 | 5160 | { |
007979ea | 5161 | return dev->priv_flags & IFF_L3MDEV_MASTER; |
4e3c8992 DA |
5162 | } |
5163 | ||
fee6d4c7 DA |
5164 | static inline bool netif_is_l3_slave(const struct net_device *dev) |
5165 | { | |
5166 | return dev->priv_flags & IFF_L3MDEV_SLAVE; | |
5167 | } | |
5168 | ||
0894ae3f JP |
5169 | static inline bool netif_is_bridge_master(const struct net_device *dev) |
5170 | { | |
5171 | return dev->priv_flags & IFF_EBRIDGE; | |
5172 | } | |
5173 | ||
28f9ee22 VY |
5174 | static inline bool netif_is_bridge_port(const struct net_device *dev) |
5175 | { | |
5176 | return dev->priv_flags & IFF_BRIDGE_PORT; | |
5177 | } | |
5178 | ||
35d4e172 JP |
5179 | static inline bool netif_is_ovs_master(const struct net_device *dev) |
5180 | { | |
5181 | return dev->priv_flags & IFF_OPENVSWITCH; | |
5182 | } | |
5183 | ||
5be66141 JP |
5184 | static inline bool netif_is_ovs_port(const struct net_device *dev) |
5185 | { | |
5186 | return dev->priv_flags & IFF_OVS_DATAPATH; | |
5187 | } | |
5188 | ||
df23bb18 SB |
5189 | static inline bool netif_is_any_bridge_port(const struct net_device *dev) |
5190 | { | |
5191 | return netif_is_bridge_port(dev) || netif_is_ovs_port(dev); | |
5192 | } | |
5193 | ||
b618aaa9 | 5194 | static inline bool netif_is_team_master(const struct net_device *dev) |
c981e421 JP |
5195 | { |
5196 | return dev->priv_flags & IFF_TEAM; | |
5197 | } | |
5198 | ||
b618aaa9 | 5199 | static inline bool netif_is_team_port(const struct net_device *dev) |
f7f019ee JP |
5200 | { |
5201 | return dev->priv_flags & IFF_TEAM_PORT; | |
5202 | } | |
5203 | ||
b618aaa9 | 5204 | static inline bool netif_is_lag_master(const struct net_device *dev) |
7be61833 JP |
5205 | { |
5206 | return netif_is_bond_master(dev) || netif_is_team_master(dev); | |
5207 | } | |
5208 | ||
b618aaa9 | 5209 | static inline bool netif_is_lag_port(const struct net_device *dev) |
e0ba1414 JP |
5210 | { |
5211 | return netif_is_bond_slave(dev) || netif_is_team_port(dev); | |
5212 | } | |
5213 | ||
d4ab4286 KJ |
5214 | static inline bool netif_is_rxfh_configured(const struct net_device *dev) |
5215 | { | |
5216 | return dev->priv_flags & IFF_RXFH_CONFIGURED; | |
5217 | } | |
5218 | ||
30c8bd5a SS |
5219 | static inline bool netif_is_failover(const struct net_device *dev) |
5220 | { | |
5221 | return dev->priv_flags & IFF_FAILOVER; | |
5222 | } | |
5223 | ||
5224 | static inline bool netif_is_failover_slave(const struct net_device *dev) | |
5225 | { | |
5226 | return dev->priv_flags & IFF_FAILOVER_SLAVE; | |
5227 | } | |
5228 | ||
02875878 ED |
5229 | /* This device needs to keep skb dst for qdisc enqueue or ndo_start_xmit() */ |
5230 | static inline void netif_keep_dst(struct net_device *dev) | |
5231 | { | |
5232 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM); | |
5233 | } | |
5234 | ||
18d3df3e PA |
5235 | /* return true if dev can't cope with mtu frames that need vlan tag insertion */ |
5236 | static inline bool netif_reduces_vlan_mtu(struct net_device *dev) | |
5237 | { | |
5238 | /* TODO: reserve and use an additional IFF bit, if we get more users */ | |
5239 | return dev->priv_flags & IFF_MACSEC; | |
5240 | } | |
5241 | ||
505d4f73 | 5242 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 | 5243 | |
571ba423 JP |
5244 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ |
5245 | ||
5246 | /* netdev_printk helpers, similar to dev_printk */ | |
5247 | ||
5248 | static inline const char *netdev_name(const struct net_device *dev) | |
5249 | { | |
c6f854d5 VF |
5250 | if (!dev->name[0] || strchr(dev->name, '%')) |
5251 | return "(unnamed net_device)"; | |
571ba423 JP |
5252 | return dev->name; |
5253 | } | |
5254 | ||
8397ed36 DA |
5255 | static inline bool netdev_unregistering(const struct net_device *dev) |
5256 | { | |
5257 | return dev->reg_state == NETREG_UNREGISTERING; | |
5258 | } | |
5259 | ||
ccc7f496 VF |
5260 | static inline const char *netdev_reg_state(const struct net_device *dev) |
5261 | { | |
5262 | switch (dev->reg_state) { | |
5263 | case NETREG_UNINITIALIZED: return " (uninitialized)"; | |
5264 | case NETREG_REGISTERED: return ""; | |
5265 | case NETREG_UNREGISTERING: return " (unregistering)"; | |
5266 | case NETREG_UNREGISTERED: return " (unregistered)"; | |
5267 | case NETREG_RELEASED: return " (released)"; | |
5268 | case NETREG_DUMMY: return " (dummy)"; | |
5269 | } | |
5270 | ||
5271 | WARN_ONCE(1, "%s: unknown reg_state %d\n", dev->name, dev->reg_state); | |
5272 | return " (unknown)"; | |
5273 | } | |
5274 | ||
ce3fdb69 | 5275 | __printf(3, 4) __cold |
6ea754eb JP |
5276 | void netdev_printk(const char *level, const struct net_device *dev, |
5277 | const char *format, ...); | |
ce3fdb69 | 5278 | __printf(2, 3) __cold |
6ea754eb | 5279 | void netdev_emerg(const struct net_device *dev, const char *format, ...); |
ce3fdb69 | 5280 | __printf(2, 3) __cold |
6ea754eb | 5281 | void netdev_alert(const struct net_device *dev, const char *format, ...); |
ce3fdb69 | 5282 | __printf(2, 3) __cold |
6ea754eb | 5283 | void netdev_crit(const struct net_device *dev, const char *format, ...); |
ce3fdb69 | 5284 | __printf(2, 3) __cold |
6ea754eb | 5285 | void netdev_err(const struct net_device *dev, const char *format, ...); |
ce3fdb69 | 5286 | __printf(2, 3) __cold |
6ea754eb | 5287 | void netdev_warn(const struct net_device *dev, const char *format, ...); |
ce3fdb69 | 5288 | __printf(2, 3) __cold |
6ea754eb | 5289 | void netdev_notice(const struct net_device *dev, const char *format, ...); |
ce3fdb69 | 5290 | __printf(2, 3) __cold |
6ea754eb | 5291 | void netdev_info(const struct net_device *dev, const char *format, ...); |
571ba423 | 5292 | |
375ef2b1 GP |
5293 | #define netdev_level_once(level, dev, fmt, ...) \ |
5294 | do { \ | |
5295 | static bool __print_once __read_mostly; \ | |
5296 | \ | |
5297 | if (!__print_once) { \ | |
5298 | __print_once = true; \ | |
5299 | netdev_printk(level, dev, fmt, ##__VA_ARGS__); \ | |
5300 | } \ | |
5301 | } while (0) | |
5302 | ||
5303 | #define netdev_emerg_once(dev, fmt, ...) \ | |
5304 | netdev_level_once(KERN_EMERG, dev, fmt, ##__VA_ARGS__) | |
5305 | #define netdev_alert_once(dev, fmt, ...) \ | |
5306 | netdev_level_once(KERN_ALERT, dev, fmt, ##__VA_ARGS__) | |
5307 | #define netdev_crit_once(dev, fmt, ...) \ | |
5308 | netdev_level_once(KERN_CRIT, dev, fmt, ##__VA_ARGS__) | |
5309 | #define netdev_err_once(dev, fmt, ...) \ | |
5310 | netdev_level_once(KERN_ERR, dev, fmt, ##__VA_ARGS__) | |
5311 | #define netdev_warn_once(dev, fmt, ...) \ | |
5312 | netdev_level_once(KERN_WARNING, dev, fmt, ##__VA_ARGS__) | |
5313 | #define netdev_notice_once(dev, fmt, ...) \ | |
5314 | netdev_level_once(KERN_NOTICE, dev, fmt, ##__VA_ARGS__) | |
5315 | #define netdev_info_once(dev, fmt, ...) \ | |
5316 | netdev_level_once(KERN_INFO, dev, fmt, ##__VA_ARGS__) | |
5317 | ||
8909c9ad VK |
5318 | #define MODULE_ALIAS_NETDEV(device) \ |
5319 | MODULE_ALIAS("netdev-" device) | |
5320 | ||
ceabef7d OZ |
5321 | #if defined(CONFIG_DYNAMIC_DEBUG) || \ |
5322 | (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) | |
571ba423 JP |
5323 | #define netdev_dbg(__dev, format, args...) \ |
5324 | do { \ | |
ffa10cb4 | 5325 | dynamic_netdev_dbg(__dev, format, ##args); \ |
571ba423 | 5326 | } while (0) |
b558c96f JC |
5327 | #elif defined(DEBUG) |
5328 | #define netdev_dbg(__dev, format, args...) \ | |
5329 | netdev_printk(KERN_DEBUG, __dev, format, ##args) | |
571ba423 JP |
5330 | #else |
5331 | #define netdev_dbg(__dev, format, args...) \ | |
5332 | ({ \ | |
5333 | if (0) \ | |
5334 | netdev_printk(KERN_DEBUG, __dev, format, ##args); \ | |
571ba423 JP |
5335 | }) |
5336 | #endif | |
5337 | ||
5338 | #if defined(VERBOSE_DEBUG) | |
5339 | #define netdev_vdbg netdev_dbg | |
5340 | #else | |
5341 | ||
5342 | #define netdev_vdbg(dev, format, args...) \ | |
5343 | ({ \ | |
5344 | if (0) \ | |
5345 | netdev_printk(KERN_DEBUG, dev, format, ##args); \ | |
5346 | 0; \ | |
5347 | }) | |
5348 | #endif | |
5349 | ||
5350 | /* | |
5351 | * netdev_WARN() acts like dev_printk(), but with the key difference | |
5352 | * of using a WARN/WARN_ON to get the message out, including the | |
5353 | * file/line information and a backtrace. | |
5354 | */ | |
5355 | #define netdev_WARN(dev, format, args...) \ | |
e1cfe3d0 | 5356 | WARN(1, "netdevice: %s%s: " format, netdev_name(dev), \ |
ccc7f496 | 5357 | netdev_reg_state(dev), ##args) |
571ba423 | 5358 | |
72dd831e | 5359 | #define netdev_WARN_ONCE(dev, format, args...) \ |
e1cfe3d0 | 5360 | WARN_ONCE(1, "netdevice: %s%s: " format, netdev_name(dev), \ |
375ef2b1 GP |
5361 | netdev_reg_state(dev), ##args) |
5362 | ||
b3d95c5c JP |
5363 | /* netif printk helpers, similar to netdev_printk */ |
5364 | ||
5365 | #define netif_printk(priv, type, level, dev, fmt, args...) \ | |
5366 | do { \ | |
5367 | if (netif_msg_##type(priv)) \ | |
5368 | netdev_printk(level, (dev), fmt, ##args); \ | |
5369 | } while (0) | |
5370 | ||
f45f4321 JP |
5371 | #define netif_level(level, priv, type, dev, fmt, args...) \ |
5372 | do { \ | |
5373 | if (netif_msg_##type(priv)) \ | |
5374 | netdev_##level(dev, fmt, ##args); \ | |
5375 | } while (0) | |
5376 | ||
b3d95c5c | 5377 | #define netif_emerg(priv, type, dev, fmt, args...) \ |
f45f4321 | 5378 | netif_level(emerg, priv, type, dev, fmt, ##args) |
b3d95c5c | 5379 | #define netif_alert(priv, type, dev, fmt, args...) \ |
f45f4321 | 5380 | netif_level(alert, priv, type, dev, fmt, ##args) |
b3d95c5c | 5381 | #define netif_crit(priv, type, dev, fmt, args...) \ |
f45f4321 | 5382 | netif_level(crit, priv, type, dev, fmt, ##args) |
b3d95c5c | 5383 | #define netif_err(priv, type, dev, fmt, args...) \ |
f45f4321 | 5384 | netif_level(err, priv, type, dev, fmt, ##args) |
b3d95c5c | 5385 | #define netif_warn(priv, type, dev, fmt, args...) \ |
f45f4321 | 5386 | netif_level(warn, priv, type, dev, fmt, ##args) |
b3d95c5c | 5387 | #define netif_notice(priv, type, dev, fmt, args...) \ |
f45f4321 | 5388 | netif_level(notice, priv, type, dev, fmt, ##args) |
b3d95c5c | 5389 | #define netif_info(priv, type, dev, fmt, args...) \ |
f45f4321 | 5390 | netif_level(info, priv, type, dev, fmt, ##args) |
b3d95c5c | 5391 | |
ceabef7d OZ |
5392 | #if defined(CONFIG_DYNAMIC_DEBUG) || \ |
5393 | (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) | |
b3d95c5c JP |
5394 | #define netif_dbg(priv, type, netdev, format, args...) \ |
5395 | do { \ | |
5396 | if (netif_msg_##type(priv)) \ | |
b5fb0a03 | 5397 | dynamic_netdev_dbg(netdev, format, ##args); \ |
b3d95c5c | 5398 | } while (0) |
0053ea9c JP |
5399 | #elif defined(DEBUG) |
5400 | #define netif_dbg(priv, type, dev, format, args...) \ | |
5401 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args) | |
b3d95c5c JP |
5402 | #else |
5403 | #define netif_dbg(priv, type, dev, format, args...) \ | |
5404 | ({ \ | |
5405 | if (0) \ | |
5406 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ | |
5407 | 0; \ | |
5408 | }) | |
5409 | #endif | |
5410 | ||
f617f276 EC |
5411 | /* if @cond then downgrade to debug, else print at @level */ |
5412 | #define netif_cond_dbg(priv, type, netdev, cond, level, fmt, args...) \ | |
5413 | do { \ | |
5414 | if (cond) \ | |
5415 | netif_dbg(priv, type, netdev, fmt, ##args); \ | |
5416 | else \ | |
5417 | netif_ ## level(priv, type, netdev, fmt, ##args); \ | |
5418 | } while (0) | |
5419 | ||
b3d95c5c | 5420 | #if defined(VERBOSE_DEBUG) |
bcfcc450 | 5421 | #define netif_vdbg netif_dbg |
b3d95c5c JP |
5422 | #else |
5423 | #define netif_vdbg(priv, type, dev, format, args...) \ | |
5424 | ({ \ | |
5425 | if (0) \ | |
a4ed89cb | 5426 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
b3d95c5c JP |
5427 | 0; \ |
5428 | }) | |
5429 | #endif | |
571ba423 | 5430 | |
900ff8c6 CW |
5431 | /* |
5432 | * The list of packet types we will receive (as opposed to discard) | |
5433 | * and the routines to invoke. | |
5434 | * | |
5435 | * Why 16. Because with 16 the only overlap we get on a hash of the | |
5436 | * low nibble of the protocol value is RARP/SNAP/X.25. | |
5437 | * | |
900ff8c6 | 5438 | * 0800 IP |
900ff8c6 CW |
5439 | * 0001 802.3 |
5440 | * 0002 AX.25 | |
5441 | * 0004 802.2 | |
5442 | * 8035 RARP | |
5443 | * 0005 SNAP | |
5444 | * 0805 X.25 | |
5445 | * 0806 ARP | |
5446 | * 8137 IPX | |
5447 | * 0009 Localtalk | |
5448 | * 86DD IPv6 | |
5449 | */ | |
5450 | #define PTYPE_HASH_SIZE (16) | |
5451 | #define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) | |
5452 | ||
744b8376 VO |
5453 | extern struct list_head ptype_all __read_mostly; |
5454 | extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly; | |
5455 | ||
4de83b88 MB |
5456 | extern struct net_device *blackhole_netdev; |
5457 | ||
385a154c | 5458 | #endif /* _LINUX_NETDEVICE_H */ |