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1da177e4 LT |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * Definitions for the Interfaces handler. | |
7 | * | |
8 | * Version: @(#)dev.h 1.0.10 08/12/93 | |
9 | * | |
02c30a84 | 10 | * Authors: Ross Biro |
1da177e4 LT |
11 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
12 | * Corey Minyard <wf-rch!minyard@relay.EU.net> | |
13 | * Donald J. Becker, <becker@cesdis.gsfc.nasa.gov> | |
113aa838 | 14 | * Alan Cox, <alan@lxorguk.ukuu.org.uk> |
1da177e4 LT |
15 | * Bjorn Ekwall. <bj0rn@blox.se> |
16 | * Pekka Riikonen <priikone@poseidon.pspt.fi> | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or | |
19 | * modify it under the terms of the GNU General Public License | |
20 | * as published by the Free Software Foundation; either version | |
21 | * 2 of the License, or (at your option) any later version. | |
22 | * | |
23 | * Moved to /usr/include/linux for NET3 | |
24 | */ | |
25 | #ifndef _LINUX_NETDEVICE_H | |
26 | #define _LINUX_NETDEVICE_H | |
27 | ||
28 | #include <linux/if.h> | |
29 | #include <linux/if_ether.h> | |
30 | #include <linux/if_packet.h> | |
95c26df8 | 31 | #include <linux/if_link.h> |
1da177e4 LT |
32 | |
33 | #ifdef __KERNEL__ | |
ed77134b | 34 | #include <linux/pm_qos_params.h> |
d7fe0f24 | 35 | #include <linux/timer.h> |
bea3348e | 36 | #include <linux/delay.h> |
1da177e4 LT |
37 | #include <asm/atomic.h> |
38 | #include <asm/cache.h> | |
39 | #include <asm/byteorder.h> | |
40 | ||
1da177e4 LT |
41 | #include <linux/device.h> |
42 | #include <linux/percpu.h> | |
4d5b78c0 | 43 | #include <linux/rculist.h> |
db217334 | 44 | #include <linux/dmaengine.h> |
bea3348e | 45 | #include <linux/workqueue.h> |
1da177e4 | 46 | |
b1b67dd4 | 47 | #include <linux/ethtool.h> |
a050c33f | 48 | #include <net/net_namespace.h> |
cf85d08f | 49 | #include <net/dsa.h> |
7a6b6f51 | 50 | #ifdef CONFIG_DCB |
2f90b865 AD |
51 | #include <net/dcbnl.h> |
52 | #endif | |
a050c33f | 53 | |
1da177e4 | 54 | struct vlan_group; |
115c1d6e | 55 | struct netpoll_info; |
c1f19b51 | 56 | struct phy_device; |
704232c2 JB |
57 | /* 802.11 specific */ |
58 | struct wireless_dev; | |
1da177e4 LT |
59 | /* source back-compat hooks */ |
60 | #define SET_ETHTOOL_OPS(netdev,ops) \ | |
61 | ( (netdev)->ethtool_ops = (ops) ) | |
62 | ||
63 | #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev | |
64 | functions are available. */ | |
65 | #define HAVE_FREE_NETDEV /* free_netdev() */ | |
66 | #define HAVE_NETDEV_PRIV /* netdev_priv() */ | |
67 | ||
c1f79426 SA |
68 | /* hardware address assignment types */ |
69 | #define NET_ADDR_PERM 0 /* address is permanent (default) */ | |
70 | #define NET_ADDR_RANDOM 1 /* address is generated randomly */ | |
71 | #define NET_ADDR_STOLEN 2 /* address is stolen from other device */ | |
72 | ||
9a1654ba JP |
73 | /* Backlog congestion levels */ |
74 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
75 | #define NET_RX_DROP 1 /* packet dropped */ | |
76 | ||
572a9d7b PM |
77 | /* |
78 | * Transmit return codes: transmit return codes originate from three different | |
79 | * namespaces: | |
80 | * | |
81 | * - qdisc return codes | |
82 | * - driver transmit return codes | |
83 | * - errno values | |
84 | * | |
85 | * Drivers are allowed to return any one of those in their hard_start_xmit() | |
86 | * function. Real network devices commonly used with qdiscs should only return | |
87 | * the driver transmit return codes though - when qdiscs are used, the actual | |
88 | * transmission happens asynchronously, so the value is not propagated to | |
89 | * higher layers. Virtual network devices transmit synchronously, in this case | |
90 | * the driver transmit return codes are consumed by dev_queue_xmit(), all | |
91 | * others are propagated to higher layers. | |
92 | */ | |
93 | ||
94 | /* qdisc ->enqueue() return codes. */ | |
95 | #define NET_XMIT_SUCCESS 0x00 | |
9a1654ba JP |
96 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
97 | #define NET_XMIT_CN 0x02 /* congestion notification */ | |
98 | #define NET_XMIT_POLICED 0x03 /* skb is shot by police */ | |
99 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ | |
1da177e4 | 100 | |
b9df3cb8 GR |
101 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
102 | * indicates that the device will soon be dropping packets, or already drops | |
103 | * some packets of the same priority; prompting us to send less aggressively. */ | |
572a9d7b | 104 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
1da177e4 LT |
105 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
106 | ||
dc1f8bf6 | 107 | /* Driver transmit return codes */ |
9a1654ba | 108 | #define NETDEV_TX_MASK 0xf0 |
572a9d7b | 109 | |
dc1f8bf6 | 110 | enum netdev_tx { |
572a9d7b | 111 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
9a1654ba JP |
112 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
113 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ | |
114 | NETDEV_TX_LOCKED = 0x20, /* driver tx lock was already taken */ | |
dc1f8bf6 SH |
115 | }; |
116 | typedef enum netdev_tx netdev_tx_t; | |
117 | ||
9a1654ba JP |
118 | /* |
119 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; | |
120 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. | |
121 | */ | |
122 | static inline bool dev_xmit_complete(int rc) | |
123 | { | |
124 | /* | |
125 | * Positive cases with an skb consumed by a driver: | |
126 | * - successful transmission (rc == NETDEV_TX_OK) | |
127 | * - error while transmitting (rc < 0) | |
128 | * - error while queueing to a different device (rc & NET_XMIT_MASK) | |
129 | */ | |
130 | if (likely(rc < NET_XMIT_MASK)) | |
131 | return true; | |
132 | ||
133 | return false; | |
134 | } | |
135 | ||
1da177e4 LT |
136 | #endif |
137 | ||
138 | #define MAX_ADDR_LEN 32 /* Largest hardware address length */ | |
139 | ||
23b41168 VD |
140 | /* Initial net device group. All devices belong to group 0 by default. */ |
141 | #define INIT_NETDEV_GROUP 0 | |
142 | ||
c88e6f51 | 143 | #ifdef __KERNEL__ |
1da177e4 LT |
144 | /* |
145 | * Compute the worst case header length according to the protocols | |
146 | * used. | |
147 | */ | |
fe2918b0 | 148 | |
caf66e58 | 149 | #if defined(CONFIG_WLAN) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) |
8388e3da DM |
150 | # if defined(CONFIG_MAC80211_MESH) |
151 | # define LL_MAX_HEADER 128 | |
152 | # else | |
153 | # define LL_MAX_HEADER 96 | |
154 | # endif | |
c759a6b4 | 155 | #elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE) |
8388e3da | 156 | # define LL_MAX_HEADER 48 |
1da177e4 | 157 | #else |
8388e3da | 158 | # define LL_MAX_HEADER 32 |
1da177e4 LT |
159 | #endif |
160 | ||
e81c7359 DM |
161 | #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \ |
162 | !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ | |
163 | !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ | |
164 | !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) | |
1da177e4 LT |
165 | #define MAX_HEADER LL_MAX_HEADER |
166 | #else | |
167 | #define MAX_HEADER (LL_MAX_HEADER + 48) | |
168 | #endif | |
169 | ||
170 | /* | |
be1f3c2c BH |
171 | * Old network device statistics. Fields are native words |
172 | * (unsigned long) so they can be read and written atomically. | |
1da177e4 | 173 | */ |
fe2918b0 | 174 | |
d94d9fee | 175 | struct net_device_stats { |
3cfde79c BH |
176 | unsigned long rx_packets; |
177 | unsigned long tx_packets; | |
178 | unsigned long rx_bytes; | |
179 | unsigned long tx_bytes; | |
180 | unsigned long rx_errors; | |
181 | unsigned long tx_errors; | |
182 | unsigned long rx_dropped; | |
183 | unsigned long tx_dropped; | |
184 | unsigned long multicast; | |
1da177e4 | 185 | unsigned long collisions; |
1da177e4 | 186 | unsigned long rx_length_errors; |
3cfde79c BH |
187 | unsigned long rx_over_errors; |
188 | unsigned long rx_crc_errors; | |
189 | unsigned long rx_frame_errors; | |
190 | unsigned long rx_fifo_errors; | |
191 | unsigned long rx_missed_errors; | |
1da177e4 LT |
192 | unsigned long tx_aborted_errors; |
193 | unsigned long tx_carrier_errors; | |
194 | unsigned long tx_fifo_errors; | |
195 | unsigned long tx_heartbeat_errors; | |
196 | unsigned long tx_window_errors; | |
1da177e4 LT |
197 | unsigned long rx_compressed; |
198 | unsigned long tx_compressed; | |
199 | }; | |
200 | ||
be1f3c2c BH |
201 | #endif /* __KERNEL__ */ |
202 | ||
1da177e4 LT |
203 | |
204 | /* Media selection options. */ | |
205 | enum { | |
206 | IF_PORT_UNKNOWN = 0, | |
207 | IF_PORT_10BASE2, | |
208 | IF_PORT_10BASET, | |
209 | IF_PORT_AUI, | |
210 | IF_PORT_100BASET, | |
211 | IF_PORT_100BASETX, | |
212 | IF_PORT_100BASEFX | |
213 | }; | |
214 | ||
215 | #ifdef __KERNEL__ | |
216 | ||
217 | #include <linux/cache.h> | |
218 | #include <linux/skbuff.h> | |
219 | ||
220 | struct neighbour; | |
221 | struct neigh_parms; | |
222 | struct sk_buff; | |
223 | ||
f001fde5 JP |
224 | struct netdev_hw_addr { |
225 | struct list_head list; | |
226 | unsigned char addr[MAX_ADDR_LEN]; | |
227 | unsigned char type; | |
ccffad25 JP |
228 | #define NETDEV_HW_ADDR_T_LAN 1 |
229 | #define NETDEV_HW_ADDR_T_SAN 2 | |
230 | #define NETDEV_HW_ADDR_T_SLAVE 3 | |
231 | #define NETDEV_HW_ADDR_T_UNICAST 4 | |
22bedad3 | 232 | #define NETDEV_HW_ADDR_T_MULTICAST 5 |
ccffad25 | 233 | bool synced; |
22bedad3 | 234 | bool global_use; |
8f8f103d | 235 | int refcount; |
f001fde5 JP |
236 | struct rcu_head rcu_head; |
237 | }; | |
238 | ||
31278e71 JP |
239 | struct netdev_hw_addr_list { |
240 | struct list_head list; | |
241 | int count; | |
242 | }; | |
243 | ||
22bedad3 JP |
244 | #define netdev_hw_addr_list_count(l) ((l)->count) |
245 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) | |
246 | #define netdev_hw_addr_list_for_each(ha, l) \ | |
247 | list_for_each_entry(ha, &(l)->list, list) | |
32e7bfc4 | 248 | |
22bedad3 JP |
249 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
250 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) | |
251 | #define netdev_for_each_uc_addr(ha, dev) \ | |
252 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) | |
6683ece3 | 253 | |
22bedad3 JP |
254 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
255 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) | |
18e225f2 | 256 | #define netdev_for_each_mc_addr(ha, dev) \ |
22bedad3 | 257 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
6683ece3 | 258 | |
d94d9fee | 259 | struct hh_cache { |
1da177e4 LT |
260 | struct hh_cache *hh_next; /* Next entry */ |
261 | atomic_t hh_refcnt; /* number of users */ | |
f0490980 ED |
262 | /* |
263 | * We want hh_output, hh_len, hh_lock and hh_data be a in a separate | |
264 | * cache line on SMP. | |
265 | * They are mostly read, but hh_refcnt may be changed quite frequently, | |
266 | * incurring cache line ping pongs. | |
267 | */ | |
268 | __be16 hh_type ____cacheline_aligned_in_smp; | |
269 | /* protocol identifier, f.e ETH_P_IP | |
1da177e4 LT |
270 | * NOTE: For VLANs, this will be the |
271 | * encapuslated type. --BLG | |
272 | */ | |
d5c42c0e | 273 | u16 hh_len; /* length of header */ |
1da177e4 | 274 | int (*hh_output)(struct sk_buff *skb); |
3644f0ce | 275 | seqlock_t hh_lock; |
1da177e4 LT |
276 | |
277 | /* cached hardware header; allow for machine alignment needs. */ | |
278 | #define HH_DATA_MOD 16 | |
279 | #define HH_DATA_OFF(__len) \ | |
5ba0eac6 | 280 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
1da177e4 LT |
281 | #define HH_DATA_ALIGN(__len) \ |
282 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
283 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
284 | }; | |
285 | ||
34d101dd ED |
286 | static inline void hh_cache_put(struct hh_cache *hh) |
287 | { | |
288 | if (atomic_dec_and_test(&hh->hh_refcnt)) | |
289 | kfree(hh); | |
290 | } | |
291 | ||
1da177e4 LT |
292 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. |
293 | * Alternative is: | |
294 | * dev->hard_header_len ? (dev->hard_header_len + | |
295 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
296 | * | |
297 | * We could use other alignment values, but we must maintain the | |
298 | * relationship HH alignment <= LL alignment. | |
f5184d26 JB |
299 | * |
300 | * LL_ALLOCATED_SPACE also takes into account the tailroom the device | |
301 | * may need. | |
1da177e4 LT |
302 | */ |
303 | #define LL_RESERVED_SPACE(dev) \ | |
f5184d26 | 304 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
1da177e4 | 305 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
f5184d26 JB |
306 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
307 | #define LL_ALLOCATED_SPACE(dev) \ | |
308 | ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
1da177e4 | 309 | |
3b04ddde SH |
310 | struct header_ops { |
311 | int (*create) (struct sk_buff *skb, struct net_device *dev, | |
312 | unsigned short type, const void *daddr, | |
313 | const void *saddr, unsigned len); | |
314 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); | |
315 | int (*rebuild)(struct sk_buff *skb); | |
316 | #define HAVE_HEADER_CACHE | |
317 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh); | |
318 | void (*cache_update)(struct hh_cache *hh, | |
319 | const struct net_device *dev, | |
320 | const unsigned char *haddr); | |
321 | }; | |
322 | ||
1da177e4 LT |
323 | /* These flag bits are private to the generic network queueing |
324 | * layer, they may not be explicitly referenced by any other | |
325 | * code. | |
326 | */ | |
327 | ||
d94d9fee | 328 | enum netdev_state_t { |
1da177e4 LT |
329 | __LINK_STATE_START, |
330 | __LINK_STATE_PRESENT, | |
1da177e4 | 331 | __LINK_STATE_NOCARRIER, |
b00055aa SR |
332 | __LINK_STATE_LINKWATCH_PENDING, |
333 | __LINK_STATE_DORMANT, | |
1da177e4 LT |
334 | }; |
335 | ||
336 | ||
337 | /* | |
338 | * This structure holds at boot time configured netdevice settings. They | |
fe2918b0 | 339 | * are then used in the device probing. |
1da177e4 LT |
340 | */ |
341 | struct netdev_boot_setup { | |
342 | char name[IFNAMSIZ]; | |
343 | struct ifmap map; | |
344 | }; | |
345 | #define NETDEV_BOOT_SETUP_MAX 8 | |
346 | ||
20380731 | 347 | extern int __init netdev_boot_setup(char *str); |
1da177e4 | 348 | |
bea3348e SH |
349 | /* |
350 | * Structure for NAPI scheduling similar to tasklet but with weighting | |
351 | */ | |
352 | struct napi_struct { | |
353 | /* The poll_list must only be managed by the entity which | |
354 | * changes the state of the NAPI_STATE_SCHED bit. This means | |
355 | * whoever atomically sets that bit can add this napi_struct | |
356 | * to the per-cpu poll_list, and whoever clears that bit | |
357 | * can remove from the list right before clearing the bit. | |
358 | */ | |
359 | struct list_head poll_list; | |
360 | ||
361 | unsigned long state; | |
362 | int weight; | |
363 | int (*poll)(struct napi_struct *, int); | |
364 | #ifdef CONFIG_NETPOLL | |
365 | spinlock_t poll_lock; | |
366 | int poll_owner; | |
bea3348e | 367 | #endif |
4ae5544f HX |
368 | |
369 | unsigned int gro_count; | |
370 | ||
5d38a079 | 371 | struct net_device *dev; |
d565b0a1 HX |
372 | struct list_head dev_list; |
373 | struct sk_buff *gro_list; | |
5d38a079 | 374 | struct sk_buff *skb; |
bea3348e SH |
375 | }; |
376 | ||
d94d9fee | 377 | enum { |
bea3348e | 378 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
a0a46196 | 379 | NAPI_STATE_DISABLE, /* Disable pending */ |
7b363e44 | 380 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
bea3348e SH |
381 | }; |
382 | ||
5b252f0c | 383 | enum gro_result { |
d1c76af9 HX |
384 | GRO_MERGED, |
385 | GRO_MERGED_FREE, | |
386 | GRO_HELD, | |
387 | GRO_NORMAL, | |
388 | GRO_DROP, | |
389 | }; | |
5b252f0c | 390 | typedef enum gro_result gro_result_t; |
d1c76af9 | 391 | |
8a4eb573 JP |
392 | /* |
393 | * enum rx_handler_result - Possible return values for rx_handlers. | |
394 | * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it | |
395 | * further. | |
396 | * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in | |
397 | * case skb->dev was changed by rx_handler. | |
398 | * @RX_HANDLER_EXACT: Force exact delivery, no wildcard. | |
399 | * @RX_HANDLER_PASS: Do nothing, passe the skb as if no rx_handler was called. | |
400 | * | |
401 | * rx_handlers are functions called from inside __netif_receive_skb(), to do | |
402 | * special processing of the skb, prior to delivery to protocol handlers. | |
403 | * | |
404 | * Currently, a net_device can only have a single rx_handler registered. Trying | |
405 | * to register a second rx_handler will return -EBUSY. | |
406 | * | |
407 | * To register a rx_handler on a net_device, use netdev_rx_handler_register(). | |
408 | * To unregister a rx_handler on a net_device, use | |
409 | * netdev_rx_handler_unregister(). | |
410 | * | |
411 | * Upon return, rx_handler is expected to tell __netif_receive_skb() what to | |
412 | * do with the skb. | |
413 | * | |
414 | * If the rx_handler consumed to skb in some way, it should return | |
415 | * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for | |
416 | * the skb to be delivered in some other ways. | |
417 | * | |
418 | * If the rx_handler changed skb->dev, to divert the skb to another | |
419 | * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the | |
420 | * new device will be called if it exists. | |
421 | * | |
422 | * If the rx_handler consider the skb should be ignored, it should return | |
423 | * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that | |
424 | * are registred on exact device (ptype->dev == skb->dev). | |
425 | * | |
426 | * If the rx_handler didn't changed skb->dev, but want the skb to be normally | |
427 | * delivered, it should return RX_HANDLER_PASS. | |
428 | * | |
429 | * A device without a registered rx_handler will behave as if rx_handler | |
430 | * returned RX_HANDLER_PASS. | |
431 | */ | |
432 | ||
433 | enum rx_handler_result { | |
434 | RX_HANDLER_CONSUMED, | |
435 | RX_HANDLER_ANOTHER, | |
436 | RX_HANDLER_EXACT, | |
437 | RX_HANDLER_PASS, | |
438 | }; | |
439 | typedef enum rx_handler_result rx_handler_result_t; | |
440 | typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb); | |
ab95bfe0 | 441 | |
b3c97528 | 442 | extern void __napi_schedule(struct napi_struct *n); |
bea3348e | 443 | |
a0a46196 DM |
444 | static inline int napi_disable_pending(struct napi_struct *n) |
445 | { | |
446 | return test_bit(NAPI_STATE_DISABLE, &n->state); | |
447 | } | |
448 | ||
bea3348e SH |
449 | /** |
450 | * napi_schedule_prep - check if napi can be scheduled | |
451 | * @n: napi context | |
452 | * | |
453 | * Test if NAPI routine is already running, and if not mark | |
454 | * it as running. This is used as a condition variable | |
a0a46196 DM |
455 | * insure only one NAPI poll instance runs. We also make |
456 | * sure there is no pending NAPI disable. | |
bea3348e SH |
457 | */ |
458 | static inline int napi_schedule_prep(struct napi_struct *n) | |
459 | { | |
a0a46196 DM |
460 | return !napi_disable_pending(n) && |
461 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); | |
bea3348e SH |
462 | } |
463 | ||
464 | /** | |
465 | * napi_schedule - schedule NAPI poll | |
466 | * @n: napi context | |
467 | * | |
468 | * Schedule NAPI poll routine to be called if it is not already | |
469 | * running. | |
470 | */ | |
471 | static inline void napi_schedule(struct napi_struct *n) | |
472 | { | |
473 | if (napi_schedule_prep(n)) | |
474 | __napi_schedule(n); | |
475 | } | |
476 | ||
bfe13f54 RD |
477 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
478 | static inline int napi_reschedule(struct napi_struct *napi) | |
479 | { | |
480 | if (napi_schedule_prep(napi)) { | |
481 | __napi_schedule(napi); | |
482 | return 1; | |
483 | } | |
484 | return 0; | |
485 | } | |
486 | ||
bea3348e SH |
487 | /** |
488 | * napi_complete - NAPI processing complete | |
489 | * @n: napi context | |
490 | * | |
491 | * Mark NAPI processing as complete. | |
492 | */ | |
d565b0a1 HX |
493 | extern void __napi_complete(struct napi_struct *n); |
494 | extern void napi_complete(struct napi_struct *n); | |
bea3348e SH |
495 | |
496 | /** | |
497 | * napi_disable - prevent NAPI from scheduling | |
498 | * @n: napi context | |
499 | * | |
500 | * Stop NAPI from being scheduled on this context. | |
501 | * Waits till any outstanding processing completes. | |
502 | */ | |
503 | static inline void napi_disable(struct napi_struct *n) | |
504 | { | |
a0a46196 | 505 | set_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e | 506 | while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) |
43cc7380 | 507 | msleep(1); |
a0a46196 | 508 | clear_bit(NAPI_STATE_DISABLE, &n->state); |
bea3348e SH |
509 | } |
510 | ||
511 | /** | |
512 | * napi_enable - enable NAPI scheduling | |
513 | * @n: napi context | |
514 | * | |
515 | * Resume NAPI from being scheduled on this context. | |
516 | * Must be paired with napi_disable. | |
517 | */ | |
518 | static inline void napi_enable(struct napi_struct *n) | |
519 | { | |
520 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
521 | smp_mb__before_clear_bit(); | |
522 | clear_bit(NAPI_STATE_SCHED, &n->state); | |
523 | } | |
524 | ||
c264c3de SH |
525 | #ifdef CONFIG_SMP |
526 | /** | |
527 | * napi_synchronize - wait until NAPI is not running | |
528 | * @n: napi context | |
529 | * | |
530 | * Wait until NAPI is done being scheduled on this context. | |
531 | * Waits till any outstanding processing completes but | |
532 | * does not disable future activations. | |
533 | */ | |
534 | static inline void napi_synchronize(const struct napi_struct *n) | |
535 | { | |
536 | while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
537 | msleep(1); | |
538 | } | |
539 | #else | |
540 | # define napi_synchronize(n) barrier() | |
541 | #endif | |
542 | ||
d94d9fee | 543 | enum netdev_queue_state_t { |
79d16385 | 544 | __QUEUE_STATE_XOFF, |
c3f26a26 | 545 | __QUEUE_STATE_FROZEN, |
5a0d2268 ED |
546 | #define QUEUE_STATE_XOFF_OR_FROZEN ((1 << __QUEUE_STATE_XOFF) | \ |
547 | (1 << __QUEUE_STATE_FROZEN)) | |
79d16385 DM |
548 | }; |
549 | ||
bb949fbd | 550 | struct netdev_queue { |
6a321cb3 ED |
551 | /* |
552 | * read mostly part | |
553 | */ | |
bb949fbd | 554 | struct net_device *dev; |
b0e1e646 | 555 | struct Qdisc *qdisc; |
79d16385 | 556 | unsigned long state; |
b0e1e646 | 557 | struct Qdisc *qdisc_sleeping; |
1d24eb48 TH |
558 | #ifdef CONFIG_RPS |
559 | struct kobject kobj; | |
560 | #endif | |
f2cd2d3e ED |
561 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
562 | int numa_node; | |
563 | #endif | |
6a321cb3 ED |
564 | /* |
565 | * write mostly part | |
566 | */ | |
567 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; | |
568 | int xmit_lock_owner; | |
9d21493b ED |
569 | /* |
570 | * please use this field instead of dev->trans_start | |
571 | */ | |
572 | unsigned long trans_start; | |
e8a0464c | 573 | } ____cacheline_aligned_in_smp; |
bb949fbd | 574 | |
f2cd2d3e ED |
575 | static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) |
576 | { | |
577 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
578 | return q->numa_node; | |
579 | #else | |
b236da69 | 580 | return NUMA_NO_NODE; |
f2cd2d3e ED |
581 | #endif |
582 | } | |
583 | ||
584 | static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node) | |
585 | { | |
586 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) | |
587 | q->numa_node = node; | |
588 | #endif | |
589 | } | |
590 | ||
df334545 | 591 | #ifdef CONFIG_RPS |
0a9627f2 TH |
592 | /* |
593 | * This structure holds an RPS map which can be of variable length. The | |
594 | * map is an array of CPUs. | |
595 | */ | |
596 | struct rps_map { | |
597 | unsigned int len; | |
598 | struct rcu_head rcu; | |
599 | u16 cpus[0]; | |
600 | }; | |
601 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16))) | |
602 | ||
fec5e652 | 603 | /* |
c445477d BH |
604 | * The rps_dev_flow structure contains the mapping of a flow to a CPU, the |
605 | * tail pointer for that CPU's input queue at the time of last enqueue, and | |
606 | * a hardware filter index. | |
fec5e652 TH |
607 | */ |
608 | struct rps_dev_flow { | |
609 | u16 cpu; | |
c445477d | 610 | u16 filter; |
fec5e652 TH |
611 | unsigned int last_qtail; |
612 | }; | |
c445477d | 613 | #define RPS_NO_FILTER 0xffff |
fec5e652 TH |
614 | |
615 | /* | |
616 | * The rps_dev_flow_table structure contains a table of flow mappings. | |
617 | */ | |
618 | struct rps_dev_flow_table { | |
619 | unsigned int mask; | |
620 | struct rcu_head rcu; | |
621 | struct work_struct free_work; | |
622 | struct rps_dev_flow flows[0]; | |
623 | }; | |
624 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ | |
625 | (_num * sizeof(struct rps_dev_flow))) | |
626 | ||
627 | /* | |
628 | * The rps_sock_flow_table contains mappings of flows to the last CPU | |
629 | * on which they were processed by the application (set in recvmsg). | |
630 | */ | |
631 | struct rps_sock_flow_table { | |
632 | unsigned int mask; | |
633 | u16 ents[0]; | |
634 | }; | |
635 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_sock_flow_table) + \ | |
636 | (_num * sizeof(u16))) | |
637 | ||
638 | #define RPS_NO_CPU 0xffff | |
639 | ||
640 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, | |
641 | u32 hash) | |
642 | { | |
643 | if (table && hash) { | |
644 | unsigned int cpu, index = hash & table->mask; | |
645 | ||
646 | /* We only give a hint, preemption can change cpu under us */ | |
647 | cpu = raw_smp_processor_id(); | |
648 | ||
649 | if (table->ents[index] != cpu) | |
650 | table->ents[index] = cpu; | |
651 | } | |
652 | } | |
653 | ||
654 | static inline void rps_reset_sock_flow(struct rps_sock_flow_table *table, | |
655 | u32 hash) | |
656 | { | |
657 | if (table && hash) | |
658 | table->ents[hash & table->mask] = RPS_NO_CPU; | |
659 | } | |
660 | ||
6e3f7faf | 661 | extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; |
fec5e652 | 662 | |
c445477d BH |
663 | #ifdef CONFIG_RFS_ACCEL |
664 | extern bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, | |
665 | u32 flow_id, u16 filter_id); | |
666 | #endif | |
667 | ||
0a9627f2 TH |
668 | /* This structure contains an instance of an RX queue. */ |
669 | struct netdev_rx_queue { | |
6e3f7faf ED |
670 | struct rps_map __rcu *rps_map; |
671 | struct rps_dev_flow_table __rcu *rps_flow_table; | |
672 | struct kobject kobj; | |
fe822240 | 673 | struct net_device *dev; |
0a9627f2 | 674 | } ____cacheline_aligned_in_smp; |
fec5e652 | 675 | #endif /* CONFIG_RPS */ |
d314774c | 676 | |
bf264145 TH |
677 | #ifdef CONFIG_XPS |
678 | /* | |
679 | * This structure holds an XPS map which can be of variable length. The | |
680 | * map is an array of queues. | |
681 | */ | |
682 | struct xps_map { | |
683 | unsigned int len; | |
684 | unsigned int alloc_len; | |
685 | struct rcu_head rcu; | |
686 | u16 queues[0]; | |
687 | }; | |
688 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + (_num * sizeof(u16))) | |
689 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_BYTES - sizeof(struct xps_map)) \ | |
690 | / sizeof(u16)) | |
691 | ||
692 | /* | |
693 | * This structure holds all XPS maps for device. Maps are indexed by CPU. | |
694 | */ | |
695 | struct xps_dev_maps { | |
696 | struct rcu_head rcu; | |
a4177869 | 697 | struct xps_map __rcu *cpu_map[0]; |
bf264145 TH |
698 | }; |
699 | #define XPS_DEV_MAPS_SIZE (sizeof(struct xps_dev_maps) + \ | |
700 | (nr_cpu_ids * sizeof(struct xps_map *))) | |
701 | #endif /* CONFIG_XPS */ | |
702 | ||
4f57c087 JF |
703 | #define TC_MAX_QUEUE 16 |
704 | #define TC_BITMASK 15 | |
705 | /* HW offloaded queuing disciplines txq count and offset maps */ | |
706 | struct netdev_tc_txq { | |
707 | u16 count; | |
708 | u16 offset; | |
709 | }; | |
710 | ||
d314774c SH |
711 | /* |
712 | * This structure defines the management hooks for network devices. | |
00829823 SH |
713 | * The following hooks can be defined; unless noted otherwise, they are |
714 | * optional and can be filled with a null pointer. | |
d314774c SH |
715 | * |
716 | * int (*ndo_init)(struct net_device *dev); | |
717 | * This function is called once when network device is registered. | |
718 | * The network device can use this to any late stage initializaton | |
719 | * or semantic validattion. It can fail with an error code which will | |
720 | * be propogated back to register_netdev | |
721 | * | |
722 | * void (*ndo_uninit)(struct net_device *dev); | |
723 | * This function is called when device is unregistered or when registration | |
724 | * fails. It is not called if init fails. | |
725 | * | |
726 | * int (*ndo_open)(struct net_device *dev); | |
727 | * This function is called when network device transistions to the up | |
728 | * state. | |
729 | * | |
730 | * int (*ndo_stop)(struct net_device *dev); | |
731 | * This function is called when network device transistions to the down | |
732 | * state. | |
733 | * | |
dc1f8bf6 SH |
734 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
735 | * struct net_device *dev); | |
00829823 | 736 | * Called when a packet needs to be transmitted. |
dc1f8bf6 SH |
737 | * Must return NETDEV_TX_OK , NETDEV_TX_BUSY. |
738 | * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX) | |
00829823 SH |
739 | * Required can not be NULL. |
740 | * | |
741 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb); | |
742 | * Called to decide which queue to when device supports multiple | |
743 | * transmit queues. | |
744 | * | |
d314774c SH |
745 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
746 | * This function is called to allow device receiver to make | |
747 | * changes to configuration when multicast or promiscious is enabled. | |
748 | * | |
749 | * void (*ndo_set_rx_mode)(struct net_device *dev); | |
750 | * This function is called device changes address list filtering. | |
751 | * | |
752 | * void (*ndo_set_multicast_list)(struct net_device *dev); | |
753 | * This function is called when the multicast address list changes. | |
754 | * | |
755 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
756 | * This function is called when the Media Access Control address | |
37b607c5 | 757 | * needs to be changed. If this interface is not defined, the |
d314774c SH |
758 | * mac address can not be changed. |
759 | * | |
760 | * int (*ndo_validate_addr)(struct net_device *dev); | |
761 | * Test if Media Access Control address is valid for the device. | |
762 | * | |
763 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
764 | * Called when a user request an ioctl which can't be handled by | |
765 | * the generic interface code. If not defined ioctl's return | |
766 | * not supported error code. | |
767 | * | |
768 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); | |
769 | * Used to set network devices bus interface parameters. This interface | |
770 | * is retained for legacy reason, new devices should use the bus | |
771 | * interface (PCI) for low level management. | |
772 | * | |
773 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
774 | * Called when a user wants to change the Maximum Transfer Unit | |
775 | * of a device. If not defined, any request to change MTU will | |
776 | * will return an error. | |
777 | * | |
00829823 | 778 | * void (*ndo_tx_timeout)(struct net_device *dev); |
d314774c SH |
779 | * Callback uses when the transmitter has not made any progress |
780 | * for dev->watchdog ticks. | |
781 | * | |
3cfde79c | 782 | * struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
28172739 | 783 | * struct rtnl_link_stats64 *storage); |
d308e38f | 784 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
d314774c | 785 | * Called when a user wants to get the network device usage |
be1f3c2c | 786 | * statistics. Drivers must do one of the following: |
3cfde79c BH |
787 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
788 | * rtnl_link_stats64 structure passed by the caller. | |
82695d9b | 789 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
be1f3c2c BH |
790 | * (which should normally be dev->stats) and return a pointer to |
791 | * it. The structure may be changed asynchronously only if each | |
792 | * field is written atomically. | |
793 | * 3. Update dev->stats asynchronously and atomically, and define | |
794 | * neither operation. | |
d314774c SH |
795 | * |
796 | * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp); | |
68763c89 | 797 | * If device support VLAN receive acceleration |
d314774c SH |
798 | * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called |
799 | * when vlan groups for the device changes. Note: grp is NULL | |
800 | * if no vlan's groups are being used. | |
801 | * | |
802 | * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid); | |
803 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
804 | * this function is called when a VLAN id is registered. | |
805 | * | |
806 | * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid); | |
807 | * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
808 | * this function is called when a VLAN id is unregistered. | |
809 | * | |
810 | * void (*ndo_poll_controller)(struct net_device *dev); | |
95c26df8 WM |
811 | * |
812 | * SR-IOV management functions. | |
813 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); | |
814 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos); | |
815 | * int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate); | |
816 | * int (*ndo_get_vf_config)(struct net_device *dev, | |
817 | * int vf, struct ifla_vf_info *ivf); | |
57b61080 SF |
818 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
819 | * struct nlattr *port[]); | |
820 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); | |
4f57c087 JF |
821 | * int (*ndo_setup_tc)(struct net_device *dev, u8 tc) |
822 | * Called to setup 'tc' number of traffic classes in the net device. This | |
823 | * is always called from the stack with the rtnl lock held and netif tx | |
824 | * queues stopped. This allows the netdevice to perform queue management | |
825 | * safely. | |
c445477d | 826 | * |
e9bce845 YZ |
827 | * Fiber Channel over Ethernet (FCoE) offload functions. |
828 | * int (*ndo_fcoe_enable)(struct net_device *dev); | |
829 | * Called when the FCoE protocol stack wants to start using LLD for FCoE | |
830 | * so the underlying device can perform whatever needed configuration or | |
831 | * initialization to support acceleration of FCoE traffic. | |
832 | * | |
833 | * int (*ndo_fcoe_disable)(struct net_device *dev); | |
834 | * Called when the FCoE protocol stack wants to stop using LLD for FCoE | |
835 | * so the underlying device can perform whatever needed clean-ups to | |
836 | * stop supporting acceleration of FCoE traffic. | |
837 | * | |
838 | * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid, | |
839 | * struct scatterlist *sgl, unsigned int sgc); | |
840 | * Called when the FCoE Initiator wants to initialize an I/O that | |
841 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
842 | * perform necessary setup and returns 1 to indicate the device is set up | |
843 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
844 | * | |
845 | * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); | |
846 | * Called when the FCoE Initiator/Target is done with the DDPed I/O as | |
847 | * indicated by the FC exchange id 'xid', so the underlying device can | |
848 | * clean up and reuse resources for later DDP requests. | |
849 | * | |
850 | * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid, | |
851 | * struct scatterlist *sgl, unsigned int sgc); | |
852 | * Called when the FCoE Target wants to initialize an I/O that | |
853 | * is a possible candidate for Direct Data Placement (DDP). The LLD can | |
854 | * perform necessary setup and returns 1 to indicate the device is set up | |
855 | * successfully to perform DDP on this I/O, otherwise this returns 0. | |
856 | * | |
857 | * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); | |
858 | * Called when the underlying device wants to override default World Wide | |
859 | * Name (WWN) generation mechanism in FCoE protocol stack to pass its own | |
860 | * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE | |
861 | * protocol stack to use. | |
862 | * | |
c445477d BH |
863 | * RFS acceleration. |
864 | * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, | |
865 | * u16 rxq_index, u32 flow_id); | |
866 | * Set hardware filter for RFS. rxq_index is the target queue index; | |
867 | * flow_id is a flow ID to be passed to rps_may_expire_flow() later. | |
868 | * Return the filter ID on success, or a negative error code. | |
fbaec0ea JP |
869 | * |
870 | * Slave management functions (for bridge, bonding, etc). User should | |
871 | * call netdev_set_master() to set dev->master properly. | |
872 | * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); | |
873 | * Called to make another netdev an underling. | |
874 | * | |
875 | * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); | |
876 | * Called to release previously enslaved netdev. | |
5455c699 MM |
877 | * |
878 | * Feature/offload setting functions. | |
879 | * u32 (*ndo_fix_features)(struct net_device *dev, u32 features); | |
880 | * Adjusts the requested feature flags according to device-specific | |
881 | * constraints, and returns the resulting flags. Must not modify | |
882 | * the device state. | |
883 | * | |
884 | * int (*ndo_set_features)(struct net_device *dev, u32 features); | |
885 | * Called to update device configuration to new features. Passed | |
886 | * feature set might be less than what was returned by ndo_fix_features()). | |
887 | * Must return >0 or -errno if it changed dev->features itself. | |
888 | * | |
d314774c | 889 | */ |
47fd5b83 | 890 | #define HAVE_NET_DEVICE_OPS |
d314774c SH |
891 | struct net_device_ops { |
892 | int (*ndo_init)(struct net_device *dev); | |
893 | void (*ndo_uninit)(struct net_device *dev); | |
894 | int (*ndo_open)(struct net_device *dev); | |
895 | int (*ndo_stop)(struct net_device *dev); | |
dc1f8bf6 | 896 | netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb, |
00829823 SH |
897 | struct net_device *dev); |
898 | u16 (*ndo_select_queue)(struct net_device *dev, | |
899 | struct sk_buff *skb); | |
d314774c SH |
900 | void (*ndo_change_rx_flags)(struct net_device *dev, |
901 | int flags); | |
d314774c | 902 | void (*ndo_set_rx_mode)(struct net_device *dev); |
d314774c | 903 | void (*ndo_set_multicast_list)(struct net_device *dev); |
d314774c SH |
904 | int (*ndo_set_mac_address)(struct net_device *dev, |
905 | void *addr); | |
d314774c | 906 | int (*ndo_validate_addr)(struct net_device *dev); |
d314774c SH |
907 | int (*ndo_do_ioctl)(struct net_device *dev, |
908 | struct ifreq *ifr, int cmd); | |
d314774c SH |
909 | int (*ndo_set_config)(struct net_device *dev, |
910 | struct ifmap *map); | |
00829823 SH |
911 | int (*ndo_change_mtu)(struct net_device *dev, |
912 | int new_mtu); | |
913 | int (*ndo_neigh_setup)(struct net_device *dev, | |
914 | struct neigh_parms *); | |
d314774c SH |
915 | void (*ndo_tx_timeout) (struct net_device *dev); |
916 | ||
28172739 ED |
917 | struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
918 | struct rtnl_link_stats64 *storage); | |
d314774c SH |
919 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
920 | ||
921 | void (*ndo_vlan_rx_register)(struct net_device *dev, | |
922 | struct vlan_group *grp); | |
923 | void (*ndo_vlan_rx_add_vid)(struct net_device *dev, | |
924 | unsigned short vid); | |
925 | void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, | |
926 | unsigned short vid); | |
927 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
d314774c | 928 | void (*ndo_poll_controller)(struct net_device *dev); |
4247e161 HX |
929 | int (*ndo_netpoll_setup)(struct net_device *dev, |
930 | struct netpoll_info *info); | |
0e34e931 | 931 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
d314774c | 932 | #endif |
95c26df8 WM |
933 | int (*ndo_set_vf_mac)(struct net_device *dev, |
934 | int queue, u8 *mac); | |
935 | int (*ndo_set_vf_vlan)(struct net_device *dev, | |
936 | int queue, u16 vlan, u8 qos); | |
937 | int (*ndo_set_vf_tx_rate)(struct net_device *dev, | |
938 | int vf, int rate); | |
939 | int (*ndo_get_vf_config)(struct net_device *dev, | |
940 | int vf, | |
941 | struct ifla_vf_info *ivf); | |
57b61080 SF |
942 | int (*ndo_set_vf_port)(struct net_device *dev, |
943 | int vf, | |
944 | struct nlattr *port[]); | |
945 | int (*ndo_get_vf_port)(struct net_device *dev, | |
946 | int vf, struct sk_buff *skb); | |
4f57c087 | 947 | int (*ndo_setup_tc)(struct net_device *dev, u8 tc); |
4d288d57 | 948 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
cb454399 YZ |
949 | int (*ndo_fcoe_enable)(struct net_device *dev); |
950 | int (*ndo_fcoe_disable)(struct net_device *dev); | |
4d288d57 YZ |
951 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
952 | u16 xid, | |
953 | struct scatterlist *sgl, | |
954 | unsigned int sgc); | |
955 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
956 | u16 xid); | |
6247e086 YZ |
957 | int (*ndo_fcoe_ddp_target)(struct net_device *dev, |
958 | u16 xid, | |
959 | struct scatterlist *sgl, | |
960 | unsigned int sgc); | |
df5c7945 YZ |
961 | #define NETDEV_FCOE_WWNN 0 |
962 | #define NETDEV_FCOE_WWPN 1 | |
963 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, | |
964 | u64 *wwn, int type); | |
4d288d57 | 965 | #endif |
c445477d BH |
966 | #ifdef CONFIG_RFS_ACCEL |
967 | int (*ndo_rx_flow_steer)(struct net_device *dev, | |
968 | const struct sk_buff *skb, | |
969 | u16 rxq_index, | |
970 | u32 flow_id); | |
971 | #endif | |
fbaec0ea JP |
972 | int (*ndo_add_slave)(struct net_device *dev, |
973 | struct net_device *slave_dev); | |
974 | int (*ndo_del_slave)(struct net_device *dev, | |
975 | struct net_device *slave_dev); | |
5455c699 MM |
976 | u32 (*ndo_fix_features)(struct net_device *dev, |
977 | u32 features); | |
978 | int (*ndo_set_features)(struct net_device *dev, | |
979 | u32 features); | |
d314774c SH |
980 | }; |
981 | ||
1da177e4 LT |
982 | /* |
983 | * The DEVICE structure. | |
984 | * Actually, this whole structure is a big mistake. It mixes I/O | |
985 | * data with strictly "high-level" data, and it has to know about | |
986 | * almost every data structure used in the INET module. | |
987 | * | |
988 | * FIXME: cleanup struct net_device such that network protocol info | |
989 | * moves out. | |
990 | */ | |
991 | ||
d94d9fee | 992 | struct net_device { |
1da177e4 LT |
993 | |
994 | /* | |
995 | * This is the first field of the "visible" part of this structure | |
996 | * (i.e. as seen by users in the "Space.c" file). It is the name | |
724df615 | 997 | * of the interface. |
1da177e4 LT |
998 | */ |
999 | char name[IFNAMSIZ]; | |
ed77134b | 1000 | |
82f68251 | 1001 | struct pm_qos_request_list pm_qos_req; |
ed77134b | 1002 | |
9356b8fc ED |
1003 | /* device name hash chain */ |
1004 | struct hlist_node name_hlist; | |
0b815a1a SH |
1005 | /* snmp alias */ |
1006 | char *ifalias; | |
1da177e4 LT |
1007 | |
1008 | /* | |
1009 | * I/O specific fields | |
1010 | * FIXME: Merge these and struct ifmap into one | |
1011 | */ | |
1012 | unsigned long mem_end; /* shared mem end */ | |
1013 | unsigned long mem_start; /* shared mem start */ | |
1014 | unsigned long base_addr; /* device I/O address */ | |
1015 | unsigned int irq; /* device IRQ number */ | |
1016 | ||
1017 | /* | |
1018 | * Some hardware also needs these fields, but they are not | |
1019 | * part of the usual set specified in Space.c. | |
1020 | */ | |
1021 | ||
1da177e4 LT |
1022 | unsigned long state; |
1023 | ||
7562f876 | 1024 | struct list_head dev_list; |
bea3348e | 1025 | struct list_head napi_list; |
44a0873d | 1026 | struct list_head unreg_list; |
1da177e4 | 1027 | |
5455c699 | 1028 | /* currently active device features */ |
04ed3e74 | 1029 | u32 features; |
5455c699 MM |
1030 | /* user-changeable features */ |
1031 | u32 hw_features; | |
1032 | /* user-requested features */ | |
1033 | u32 wanted_features; | |
1aac6267 | 1034 | /* mask of features inheritable by VLAN devices */ |
04ed3e74 MM |
1035 | u32 vlan_features; |
1036 | ||
5455c699 MM |
1037 | /* Net device feature bits; if you change something, |
1038 | * also update netdev_features_strings[] in ethtool.c */ | |
1039 | ||
9356b8fc | 1040 | #define NETIF_F_SG 1 /* Scatter/gather IO. */ |
d212f87b | 1041 | #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ |
9356b8fc ED |
1042 | #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ |
1043 | #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ | |
d212f87b | 1044 | #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ |
9356b8fc ED |
1045 | #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ |
1046 | #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ | |
1047 | #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ | |
1048 | #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ | |
1049 | #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ | |
1050 | #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ | |
37c3185a | 1051 | #define NETIF_F_GSO 2048 /* Enable software GSO. */ |
e24eb521 CB |
1052 | #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ |
1053 | /* do not use LLTX in new drivers */ | |
ce286d32 | 1054 | #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ |
d565b0a1 | 1055 | #define NETIF_F_GRO 16384 /* Generic receive offload */ |
3ae7c0b2 | 1056 | #define NETIF_F_LRO 32768 /* large receive offload */ |
7967168c | 1057 | |
8dc92f7e | 1058 | /* the GSO_MASK reserves bits 16 through 23 */ |
01d5b2fc | 1059 | #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */ |
8dc92f7e | 1060 | #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */ |
bb2af4f5 | 1061 | #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/ |
15682bc4 | 1062 | #define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */ |
b00fabb4 | 1063 | #define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */ |
e83d360d | 1064 | #define NETIF_F_RXCSUM (1 << 29) /* Receive checksumming offload */ |
c6e1a0d1 | 1065 | #define NETIF_F_NOCACHE_COPY (1 << 30) /* Use no-cache copyfromuser */ |
eed2a12f | 1066 | #define NETIF_F_LOOPBACK (1 << 31) /* Enable loopback */ |
01d5b2fc | 1067 | |
7967168c | 1068 | /* Segmentation offload features */ |
289c79a4 | 1069 | #define NETIF_F_GSO_SHIFT 16 |
43eb99c5 | 1070 | #define NETIF_F_GSO_MASK 0x00ff0000 |
7967168c | 1071 | #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) |
f83ef8c0 | 1072 | #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) |
576a30eb | 1073 | #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) |
f83ef8c0 HX |
1074 | #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) |
1075 | #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) | |
01d5b2fc | 1076 | #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT) |
9356b8fc | 1077 | |
5455c699 MM |
1078 | /* Features valid for ethtool to change */ |
1079 | /* = all defined minus driver/device-class-related */ | |
fa2bd7ff | 1080 | #define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \ |
5455c699 | 1081 | NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) |
eed2a12f | 1082 | #define NETIF_F_ETHTOOL_BITS (0xff3fffff & ~NETIF_F_NEVER_CHANGE) |
5455c699 | 1083 | |
78eb8877 | 1084 | /* List of features with software fallbacks. */ |
d29c0c5c HX |
1085 | #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \ |
1086 | NETIF_F_TSO6 | NETIF_F_UFO) | |
78eb8877 | 1087 | |
d212f87b | 1088 | |
8648b305 | 1089 | #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) |
d212f87b SH |
1090 | #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) |
1091 | #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) | |
1092 | #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) | |
8648b305 | 1093 | |
0a417704 MM |
1094 | #define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN) |
1095 | ||
7f267051 YZ |
1096 | #define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \ |
1097 | NETIF_F_FSO) | |
1098 | ||
0a417704 MM |
1099 | #define NETIF_F_ALL_TX_OFFLOADS (NETIF_F_ALL_CSUM | NETIF_F_SG | \ |
1100 | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ | |
fa2bd7ff | 1101 | NETIF_F_HIGHDMA | \ |
7f267051 YZ |
1102 | NETIF_F_SCTP_CSUM | \ |
1103 | NETIF_F_ALL_FCOE) | |
0a417704 | 1104 | |
b63365a2 HX |
1105 | /* |
1106 | * If one device supports one of these features, then enable them | |
1107 | * for all in netdev_increment_features. | |
1108 | */ | |
1109 | #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ | |
d314774c | 1110 | NETIF_F_SG | NETIF_F_HIGHDMA | \ |
1742f183 MM |
1111 | NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED) |
1112 | /* | |
1113 | * If one device doesn't support one of these features, then disable it | |
1114 | * for all in netdev_increment_features. | |
1115 | */ | |
1116 | #define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO) | |
b63365a2 | 1117 | |
212b573f MM |
1118 | /* changeable features with no special hardware requirements */ |
1119 | #define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO) | |
1120 | ||
1da177e4 LT |
1121 | /* Interface index. Unique device identifier */ |
1122 | int ifindex; | |
1123 | int iflink; | |
1124 | ||
c45d286e | 1125 | struct net_device_stats stats; |
caf586e5 ED |
1126 | atomic_long_t rx_dropped; /* dropped packets by core network |
1127 | * Do not use this in drivers. | |
1128 | */ | |
1da177e4 | 1129 | |
b86e0280 | 1130 | #ifdef CONFIG_WIRELESS_EXT |
1da177e4 LT |
1131 | /* List of functions to handle Wireless Extensions (instead of ioctl). |
1132 | * See <net/iw_handler.h> for details. Jean II */ | |
1133 | const struct iw_handler_def * wireless_handlers; | |
1134 | /* Instance data managed by the core of Wireless Extensions. */ | |
1135 | struct iw_public_data * wireless_data; | |
b86e0280 | 1136 | #endif |
d314774c SH |
1137 | /* Management operations */ |
1138 | const struct net_device_ops *netdev_ops; | |
76fd8593 | 1139 | const struct ethtool_ops *ethtool_ops; |
1da177e4 | 1140 | |
3b04ddde SH |
1141 | /* Hardware header description */ |
1142 | const struct header_ops *header_ops; | |
1143 | ||
b00055aa | 1144 | unsigned int flags; /* interface flags (a la BSD) */ |
bdc220da | 1145 | unsigned int priv_flags; /* Like 'flags' but invisible to userspace. */ |
1da177e4 | 1146 | unsigned short gflags; |
1da177e4 LT |
1147 | unsigned short padded; /* How much padding added by alloc_netdev() */ |
1148 | ||
b00055aa SR |
1149 | unsigned char operstate; /* RFC2863 operstate */ |
1150 | unsigned char link_mode; /* mapping policy to operstate */ | |
1151 | ||
bdc220da JP |
1152 | unsigned char if_port; /* Selectable AUI, TP,..*/ |
1153 | unsigned char dma; /* DMA channel */ | |
1154 | ||
cd7b5396 | 1155 | unsigned int mtu; /* interface MTU value */ |
1da177e4 LT |
1156 | unsigned short type; /* interface hardware type */ |
1157 | unsigned short hard_header_len; /* hardware hdr length */ | |
1da177e4 | 1158 | |
f5184d26 JB |
1159 | /* extra head- and tailroom the hardware may need, but not in all cases |
1160 | * can this be guaranteed, especially tailroom. Some cases also use | |
1161 | * LL_MAX_HEADER instead to allocate the skb. | |
1162 | */ | |
1163 | unsigned short needed_headroom; | |
1164 | unsigned short needed_tailroom; | |
1165 | ||
1da177e4 | 1166 | /* Interface address info. */ |
a6f9a705 | 1167 | unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ |
c1f79426 | 1168 | unsigned char addr_assign_type; /* hw address assignment type */ |
1da177e4 LT |
1169 | unsigned char addr_len; /* hardware address length */ |
1170 | unsigned short dev_id; /* for shared network cards */ | |
1171 | ||
ccffad25 | 1172 | spinlock_t addr_list_lock; |
22bedad3 JP |
1173 | struct netdev_hw_addr_list uc; /* Unicast mac addresses */ |
1174 | struct netdev_hw_addr_list mc; /* Multicast mac addresses */ | |
1175 | int uc_promisc; | |
9d45abe1 WC |
1176 | unsigned int promiscuity; |
1177 | unsigned int allmulti; | |
1da177e4 | 1178 | |
1da177e4 LT |
1179 | |
1180 | /* Protocol specific pointers */ | |
65ac6a5f JG |
1181 | |
1182 | #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) | |
b616b09a | 1183 | struct vlan_group __rcu *vlgrp; /* VLAN group */ |
65ac6a5f | 1184 | #endif |
91da11f8 LB |
1185 | #ifdef CONFIG_NET_DSA |
1186 | void *dsa_ptr; /* dsa specific data */ | |
1187 | #endif | |
1da177e4 | 1188 | void *atalk_ptr; /* AppleTalk link */ |
95ae6b22 | 1189 | struct in_device __rcu *ip_ptr; /* IPv4 specific data */ |
fc766e4c | 1190 | struct dn_dev __rcu *dn_ptr; /* DECnet specific data */ |
198caeca | 1191 | struct inet6_dev __rcu *ip6_ptr; /* IPv6 specific data */ |
1da177e4 LT |
1192 | void *ec_ptr; /* Econet specific data */ |
1193 | void *ax25_ptr; /* AX.25 specific data */ | |
704232c2 JB |
1194 | struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, |
1195 | assign before registering */ | |
1da177e4 | 1196 | |
9356b8fc | 1197 | /* |
cd13539b | 1198 | * Cache lines mostly used on receive path (including eth_type_trans()) |
9356b8fc | 1199 | */ |
4dc89133 ED |
1200 | unsigned long last_rx; /* Time of last Rx |
1201 | * This should not be set in | |
1202 | * drivers, unless really needed, | |
1203 | * because network stack (bonding) | |
1204 | * use it if/when necessary, to | |
1205 | * avoid dirtying this cache line. | |
1206 | */ | |
1207 | ||
cd13539b ED |
1208 | struct net_device *master; /* Pointer to master device of a group, |
1209 | * which this device is member of. | |
1210 | */ | |
1211 | ||
9356b8fc | 1212 | /* Interface address info used in eth_type_trans() */ |
f001fde5 JP |
1213 | unsigned char *dev_addr; /* hw address, (before bcast |
1214 | because most packets are | |
1215 | unicast) */ | |
1216 | ||
31278e71 JP |
1217 | struct netdev_hw_addr_list dev_addrs; /* list of device |
1218 | hw addresses */ | |
9356b8fc ED |
1219 | |
1220 | unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ | |
1da177e4 | 1221 | |
df334545 | 1222 | #ifdef CONFIG_RPS |
0a9627f2 TH |
1223 | struct kset *queues_kset; |
1224 | ||
1225 | struct netdev_rx_queue *_rx; | |
1226 | ||
62fe0b40 | 1227 | /* Number of RX queues allocated at register_netdev() time */ |
0a9627f2 | 1228 | unsigned int num_rx_queues; |
62fe0b40 BH |
1229 | |
1230 | /* Number of RX queues currently active in device */ | |
1231 | unsigned int real_num_rx_queues; | |
c445477d BH |
1232 | |
1233 | #ifdef CONFIG_RFS_ACCEL | |
1234 | /* CPU reverse-mapping for RX completion interrupts, indexed | |
1235 | * by RX queue number. Assigned by driver. This must only be | |
1236 | * set if the ndo_rx_flow_steer operation is defined. */ | |
1237 | struct cpu_rmap *rx_cpu_rmap; | |
1238 | #endif | |
df334545 | 1239 | #endif |
0a9627f2 | 1240 | |
61391cde | 1241 | rx_handler_func_t __rcu *rx_handler; |
1242 | void __rcu *rx_handler_data; | |
e8a0464c | 1243 | |
24824a09 | 1244 | struct netdev_queue __rcu *ingress_queue; |
cd13539b ED |
1245 | |
1246 | /* | |
1247 | * Cache lines mostly used on transmit path | |
1248 | */ | |
e8a0464c | 1249 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
fd2ea0a7 DM |
1250 | |
1251 | /* Number of TX queues allocated at alloc_netdev_mq() time */ | |
e8a0464c | 1252 | unsigned int num_tx_queues; |
fd2ea0a7 DM |
1253 | |
1254 | /* Number of TX queues currently active in device */ | |
1255 | unsigned int real_num_tx_queues; | |
1256 | ||
af356afa PM |
1257 | /* root qdisc from userspace point of view */ |
1258 | struct Qdisc *qdisc; | |
1259 | ||
1da177e4 | 1260 | unsigned long tx_queue_len; /* Max frames per queue allowed */ |
c3f26a26 | 1261 | spinlock_t tx_global_lock; |
cd13539b | 1262 | |
bf264145 | 1263 | #ifdef CONFIG_XPS |
a4177869 | 1264 | struct xps_dev_maps __rcu *xps_maps; |
bf264145 | 1265 | #endif |
1d24eb48 | 1266 | |
9356b8fc | 1267 | /* These may be needed for future network-power-down code. */ |
9d21493b ED |
1268 | |
1269 | /* | |
1270 | * trans_start here is expensive for high speed devices on SMP, | |
1271 | * please use netdev_queue->trans_start instead. | |
1272 | */ | |
9356b8fc ED |
1273 | unsigned long trans_start; /* Time (in jiffies) of last Tx */ |
1274 | ||
1275 | int watchdog_timeo; /* used by dev_watchdog() */ | |
1276 | struct timer_list watchdog_timer; | |
1277 | ||
1da177e4 | 1278 | /* Number of references to this device */ |
29b4433d | 1279 | int __percpu *pcpu_refcnt; |
9356b8fc | 1280 | |
1da177e4 LT |
1281 | /* delayed register/unregister */ |
1282 | struct list_head todo_list; | |
1da177e4 LT |
1283 | /* device index hash chain */ |
1284 | struct hlist_node index_hlist; | |
1285 | ||
e014debe | 1286 | struct list_head link_watch_list; |
572a103d | 1287 | |
1da177e4 LT |
1288 | /* register/unregister state machine */ |
1289 | enum { NETREG_UNINITIALIZED=0, | |
b17a7c17 | 1290 | NETREG_REGISTERED, /* completed register_netdevice */ |
1da177e4 LT |
1291 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
1292 | NETREG_UNREGISTERED, /* completed unregister todo */ | |
1293 | NETREG_RELEASED, /* called free_netdev */ | |
937f1ba5 | 1294 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
449f4544 ED |
1295 | } reg_state:8; |
1296 | ||
1297 | bool dismantle; /* device is going do be freed */ | |
a2835763 PM |
1298 | |
1299 | enum { | |
1300 | RTNL_LINK_INITIALIZED, | |
1301 | RTNL_LINK_INITIALIZING, | |
1302 | } rtnl_link_state:16; | |
1da177e4 | 1303 | |
d314774c SH |
1304 | /* Called from unregister, can be used to call free_netdev */ |
1305 | void (*destructor)(struct net_device *dev); | |
1da177e4 | 1306 | |
1da177e4 | 1307 | #ifdef CONFIG_NETPOLL |
115c1d6e | 1308 | struct netpoll_info *npinfo; |
1da177e4 | 1309 | #endif |
eae792b7 | 1310 | |
c346dca1 | 1311 | #ifdef CONFIG_NET_NS |
4a1c5371 EB |
1312 | /* Network namespace this network device is inside */ |
1313 | struct net *nd_net; | |
c346dca1 | 1314 | #endif |
4a1c5371 | 1315 | |
4951704b | 1316 | /* mid-layer private */ |
a7855c78 ED |
1317 | union { |
1318 | void *ml_priv; | |
1319 | struct pcpu_lstats __percpu *lstats; /* loopback stats */ | |
290b895e | 1320 | struct pcpu_tstats __percpu *tstats; /* tunnel stats */ |
6d81f41c | 1321 | struct pcpu_dstats __percpu *dstats; /* dummy stats */ |
a7855c78 | 1322 | }; |
eca9ebac | 1323 | /* GARP */ |
3cc77ec7 | 1324 | struct garp_port __rcu *garp_port; |
1da177e4 | 1325 | |
1da177e4 | 1326 | /* class/net/name entry */ |
43cb76d9 | 1327 | struct device dev; |
0c509a6c EB |
1328 | /* space for optional device, statistics, and wireless sysfs groups */ |
1329 | const struct attribute_group *sysfs_groups[4]; | |
38f7b870 PM |
1330 | |
1331 | /* rtnetlink link ops */ | |
1332 | const struct rtnl_link_ops *rtnl_link_ops; | |
f25f4e44 | 1333 | |
82cc1a7a PWJ |
1334 | /* for setting kernel sock attribute on TCP connection setup */ |
1335 | #define GSO_MAX_SIZE 65536 | |
1336 | unsigned int gso_max_size; | |
d314774c | 1337 | |
7a6b6f51 | 1338 | #ifdef CONFIG_DCB |
2f90b865 | 1339 | /* Data Center Bridging netlink ops */ |
32953543 | 1340 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
2f90b865 | 1341 | #endif |
4f57c087 JF |
1342 | u8 num_tc; |
1343 | struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE]; | |
1344 | u8 prio_tc_map[TC_BITMASK + 1]; | |
2f90b865 | 1345 | |
4d288d57 YZ |
1346 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
1347 | /* max exchange id for FCoE LRO by ddp */ | |
1348 | unsigned int fcoe_ddp_xid; | |
1349 | #endif | |
c1f19b51 RC |
1350 | /* phy device may attach itself for hardware timestamping */ |
1351 | struct phy_device *phydev; | |
cbda10fa VD |
1352 | |
1353 | /* group the device belongs to */ | |
1354 | int group; | |
1da177e4 | 1355 | }; |
43cb76d9 | 1356 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
1da177e4 LT |
1357 | |
1358 | #define NETDEV_ALIGN 32 | |
1da177e4 | 1359 | |
4f57c087 JF |
1360 | static inline |
1361 | int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio) | |
1362 | { | |
1363 | return dev->prio_tc_map[prio & TC_BITMASK]; | |
1364 | } | |
1365 | ||
1366 | static inline | |
1367 | int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc) | |
1368 | { | |
1369 | if (tc >= dev->num_tc) | |
1370 | return -EINVAL; | |
1371 | ||
1372 | dev->prio_tc_map[prio & TC_BITMASK] = tc & TC_BITMASK; | |
1373 | return 0; | |
1374 | } | |
1375 | ||
1376 | static inline | |
1377 | void netdev_reset_tc(struct net_device *dev) | |
1378 | { | |
1379 | dev->num_tc = 0; | |
1380 | memset(dev->tc_to_txq, 0, sizeof(dev->tc_to_txq)); | |
1381 | memset(dev->prio_tc_map, 0, sizeof(dev->prio_tc_map)); | |
1382 | } | |
1383 | ||
1384 | static inline | |
1385 | int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset) | |
1386 | { | |
1387 | if (tc >= dev->num_tc) | |
1388 | return -EINVAL; | |
1389 | ||
1390 | dev->tc_to_txq[tc].count = count; | |
1391 | dev->tc_to_txq[tc].offset = offset; | |
1392 | return 0; | |
1393 | } | |
1394 | ||
1395 | static inline | |
1396 | int netdev_set_num_tc(struct net_device *dev, u8 num_tc) | |
1397 | { | |
1398 | if (num_tc > TC_MAX_QUEUE) | |
1399 | return -EINVAL; | |
1400 | ||
1401 | dev->num_tc = num_tc; | |
1402 | return 0; | |
1403 | } | |
1404 | ||
1405 | static inline | |
1406 | int netdev_get_num_tc(struct net_device *dev) | |
1407 | { | |
1408 | return dev->num_tc; | |
1409 | } | |
1410 | ||
e8a0464c DM |
1411 | static inline |
1412 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
1413 | unsigned int index) | |
1414 | { | |
1415 | return &dev->_tx[index]; | |
1416 | } | |
1417 | ||
1418 | static inline void netdev_for_each_tx_queue(struct net_device *dev, | |
1419 | void (*f)(struct net_device *, | |
1420 | struct netdev_queue *, | |
1421 | void *), | |
1422 | void *arg) | |
1423 | { | |
1424 | unsigned int i; | |
1425 | ||
1426 | for (i = 0; i < dev->num_tx_queues; i++) | |
1427 | f(dev, &dev->_tx[i], arg); | |
1428 | } | |
1429 | ||
c346dca1 YH |
1430 | /* |
1431 | * Net namespace inlines | |
1432 | */ | |
1433 | static inline | |
1434 | struct net *dev_net(const struct net_device *dev) | |
1435 | { | |
c2d9ba9b | 1436 | return read_pnet(&dev->nd_net); |
c346dca1 YH |
1437 | } |
1438 | ||
1439 | static inline | |
f5aa23fd | 1440 | void dev_net_set(struct net_device *dev, struct net *net) |
c346dca1 YH |
1441 | { |
1442 | #ifdef CONFIG_NET_NS | |
f3005d7f DL |
1443 | release_net(dev->nd_net); |
1444 | dev->nd_net = hold_net(net); | |
c346dca1 YH |
1445 | #endif |
1446 | } | |
1447 | ||
cf85d08f LB |
1448 | static inline bool netdev_uses_dsa_tags(struct net_device *dev) |
1449 | { | |
1450 | #ifdef CONFIG_NET_DSA_TAG_DSA | |
1451 | if (dev->dsa_ptr != NULL) | |
1452 | return dsa_uses_dsa_tags(dev->dsa_ptr); | |
1453 | #endif | |
1454 | ||
1455 | return 0; | |
1456 | } | |
1457 | ||
8a83a00b AB |
1458 | #ifndef CONFIG_NET_NS |
1459 | static inline void skb_set_dev(struct sk_buff *skb, struct net_device *dev) | |
1460 | { | |
1461 | skb->dev = dev; | |
1462 | } | |
1463 | #else /* CONFIG_NET_NS */ | |
1464 | void skb_set_dev(struct sk_buff *skb, struct net_device *dev); | |
1465 | #endif | |
1466 | ||
396138f0 LB |
1467 | static inline bool netdev_uses_trailer_tags(struct net_device *dev) |
1468 | { | |
1469 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
1470 | if (dev->dsa_ptr != NULL) | |
1471 | return dsa_uses_trailer_tags(dev->dsa_ptr); | |
1472 | #endif | |
1473 | ||
1474 | return 0; | |
1475 | } | |
1476 | ||
bea3348e SH |
1477 | /** |
1478 | * netdev_priv - access network device private data | |
1479 | * @dev: network device | |
1480 | * | |
1481 | * Get network device private data | |
1482 | */ | |
6472ce60 | 1483 | static inline void *netdev_priv(const struct net_device *dev) |
1da177e4 | 1484 | { |
1ce8e7b5 | 1485 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
1da177e4 LT |
1486 | } |
1487 | ||
1da177e4 LT |
1488 | /* Set the sysfs physical device reference for the network logical device |
1489 | * if set prior to registration will cause a symlink during initialization. | |
1490 | */ | |
43cb76d9 | 1491 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
1da177e4 | 1492 | |
384912ed MH |
1493 | /* Set the sysfs device type for the network logical device to allow |
1494 | * fin grained indentification of different network device types. For | |
1495 | * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc. | |
1496 | */ | |
1497 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) | |
1498 | ||
3b582cc1 SH |
1499 | /** |
1500 | * netif_napi_add - initialize a napi context | |
1501 | * @dev: network device | |
1502 | * @napi: napi context | |
1503 | * @poll: polling function | |
1504 | * @weight: default weight | |
1505 | * | |
1506 | * netif_napi_add() must be used to initialize a napi context prior to calling | |
1507 | * *any* of the other napi related functions. | |
1508 | */ | |
d565b0a1 HX |
1509 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
1510 | int (*poll)(struct napi_struct *, int), int weight); | |
bea3348e | 1511 | |
d8156534 AD |
1512 | /** |
1513 | * netif_napi_del - remove a napi context | |
1514 | * @napi: napi context | |
1515 | * | |
1516 | * netif_napi_del() removes a napi context from the network device napi list | |
1517 | */ | |
d565b0a1 HX |
1518 | void netif_napi_del(struct napi_struct *napi); |
1519 | ||
1520 | struct napi_gro_cb { | |
78a478d0 HX |
1521 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
1522 | void *frag0; | |
1523 | ||
7489594c HX |
1524 | /* Length of frag0. */ |
1525 | unsigned int frag0_len; | |
1526 | ||
86911732 HX |
1527 | /* This indicates where we are processing relative to skb->data. */ |
1528 | int data_offset; | |
1529 | ||
d565b0a1 HX |
1530 | /* This is non-zero if the packet may be of the same flow. */ |
1531 | int same_flow; | |
1532 | ||
1533 | /* This is non-zero if the packet cannot be merged with the new skb. */ | |
1534 | int flush; | |
1535 | ||
1536 | /* Number of segments aggregated. */ | |
1537 | int count; | |
5d38a079 HX |
1538 | |
1539 | /* Free the skb? */ | |
1540 | int free; | |
d565b0a1 HX |
1541 | }; |
1542 | ||
1543 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) | |
d8156534 | 1544 | |
1da177e4 | 1545 | struct packet_type { |
f2ccd8fa DM |
1546 | __be16 type; /* This is really htons(ether_type). */ |
1547 | struct net_device *dev; /* NULL is wildcarded here */ | |
1548 | int (*func) (struct sk_buff *, | |
1549 | struct net_device *, | |
1550 | struct packet_type *, | |
1551 | struct net_device *); | |
576a30eb | 1552 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
04ed3e74 | 1553 | u32 features); |
a430a43d | 1554 | int (*gso_send_check)(struct sk_buff *skb); |
d565b0a1 HX |
1555 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
1556 | struct sk_buff *skb); | |
1557 | int (*gro_complete)(struct sk_buff *skb); | |
1da177e4 LT |
1558 | void *af_packet_priv; |
1559 | struct list_head list; | |
1560 | }; | |
1561 | ||
1da177e4 LT |
1562 | #include <linux/notifier.h> |
1563 | ||
1da177e4 LT |
1564 | extern rwlock_t dev_base_lock; /* Device list lock */ |
1565 | ||
7562f876 | 1566 | |
881d966b EB |
1567 | #define for_each_netdev(net, d) \ |
1568 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
dcbccbd4 EB |
1569 | #define for_each_netdev_reverse(net, d) \ |
1570 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) | |
c6d14c84 ED |
1571 | #define for_each_netdev_rcu(net, d) \ |
1572 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b EB |
1573 | #define for_each_netdev_safe(net, d, n) \ |
1574 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
1575 | #define for_each_netdev_continue(net, d) \ | |
1576 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
254245d2 | 1577 | #define for_each_netdev_continue_rcu(net, d) \ |
1578 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) | |
881d966b | 1579 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
7562f876 | 1580 | |
a050c33f DL |
1581 | static inline struct net_device *next_net_device(struct net_device *dev) |
1582 | { | |
1583 | struct list_head *lh; | |
1584 | struct net *net; | |
1585 | ||
c346dca1 | 1586 | net = dev_net(dev); |
a050c33f DL |
1587 | lh = dev->dev_list.next; |
1588 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
1589 | } | |
1590 | ||
ce81b76a ED |
1591 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
1592 | { | |
1593 | struct list_head *lh; | |
1594 | struct net *net; | |
1595 | ||
1596 | net = dev_net(dev); | |
ccf43438 | 1597 | lh = rcu_dereference(list_next_rcu(&dev->dev_list)); |
ce81b76a ED |
1598 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
1599 | } | |
1600 | ||
a050c33f DL |
1601 | static inline struct net_device *first_net_device(struct net *net) |
1602 | { | |
1603 | return list_empty(&net->dev_base_head) ? NULL : | |
1604 | net_device_entry(net->dev_base_head.next); | |
1605 | } | |
7562f876 | 1606 | |
ccf43438 ED |
1607 | static inline struct net_device *first_net_device_rcu(struct net *net) |
1608 | { | |
1609 | struct list_head *lh = rcu_dereference(list_next_rcu(&net->dev_base_head)); | |
1610 | ||
1611 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
1612 | } | |
1613 | ||
1da177e4 LT |
1614 | extern int netdev_boot_setup_check(struct net_device *dev); |
1615 | extern unsigned long netdev_boot_base(const char *prefix, int unit); | |
941666c2 ED |
1616 | extern struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, |
1617 | const char *hwaddr); | |
881d966b EB |
1618 | extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); |
1619 | extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
1da177e4 LT |
1620 | extern void dev_add_pack(struct packet_type *pt); |
1621 | extern void dev_remove_pack(struct packet_type *pt); | |
1622 | extern void __dev_remove_pack(struct packet_type *pt); | |
1623 | ||
bb69ae04 ED |
1624 | extern struct net_device *dev_get_by_flags_rcu(struct net *net, unsigned short flags, |
1625 | unsigned short mask); | |
881d966b | 1626 | extern struct net_device *dev_get_by_name(struct net *net, const char *name); |
72c9528b | 1627 | extern struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); |
881d966b | 1628 | extern struct net_device *__dev_get_by_name(struct net *net, const char *name); |
1da177e4 LT |
1629 | extern int dev_alloc_name(struct net_device *dev, const char *name); |
1630 | extern int dev_open(struct net_device *dev); | |
1631 | extern int dev_close(struct net_device *dev); | |
0187bdfb | 1632 | extern void dev_disable_lro(struct net_device *dev); |
1da177e4 LT |
1633 | extern int dev_queue_xmit(struct sk_buff *skb); |
1634 | extern int register_netdevice(struct net_device *dev); | |
44a0873d ED |
1635 | extern void unregister_netdevice_queue(struct net_device *dev, |
1636 | struct list_head *head); | |
9b5e383c | 1637 | extern void unregister_netdevice_many(struct list_head *head); |
44a0873d ED |
1638 | static inline void unregister_netdevice(struct net_device *dev) |
1639 | { | |
1640 | unregister_netdevice_queue(dev, NULL); | |
1641 | } | |
1642 | ||
29b4433d | 1643 | extern int netdev_refcnt_read(const struct net_device *dev); |
1da177e4 LT |
1644 | extern void free_netdev(struct net_device *dev); |
1645 | extern void synchronize_net(void); | |
1646 | extern int register_netdevice_notifier(struct notifier_block *nb); | |
1647 | extern int unregister_netdevice_notifier(struct notifier_block *nb); | |
937f1ba5 | 1648 | extern int init_dummy_netdev(struct net_device *dev); |
9d40bbda | 1649 | extern void netdev_resync_ops(struct net_device *dev); |
937f1ba5 | 1650 | |
ad7379d4 | 1651 | extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
881d966b EB |
1652 | extern struct net_device *dev_get_by_index(struct net *net, int ifindex); |
1653 | extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
fb699dfd | 1654 | extern struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); |
1da177e4 LT |
1655 | extern int dev_restart(struct net_device *dev); |
1656 | #ifdef CONFIG_NETPOLL_TRAP | |
1657 | extern int netpoll_trap(void); | |
1658 | #endif | |
86911732 HX |
1659 | extern int skb_gro_receive(struct sk_buff **head, |
1660 | struct sk_buff *skb); | |
78a478d0 | 1661 | extern void skb_gro_reset_offset(struct sk_buff *skb); |
86911732 HX |
1662 | |
1663 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) | |
1664 | { | |
1665 | return NAPI_GRO_CB(skb)->data_offset; | |
1666 | } | |
1667 | ||
1668 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) | |
1669 | { | |
1670 | return skb->len - NAPI_GRO_CB(skb)->data_offset; | |
1671 | } | |
1672 | ||
1673 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) | |
1674 | { | |
1675 | NAPI_GRO_CB(skb)->data_offset += len; | |
1676 | } | |
1677 | ||
a5b1cf28 HX |
1678 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
1679 | unsigned int offset) | |
86911732 | 1680 | { |
a5b1cf28 HX |
1681 | return NAPI_GRO_CB(skb)->frag0 + offset; |
1682 | } | |
78a478d0 | 1683 | |
a5b1cf28 HX |
1684 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
1685 | { | |
1686 | return NAPI_GRO_CB(skb)->frag0_len < hlen; | |
1687 | } | |
78a478d0 | 1688 | |
a5b1cf28 HX |
1689 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
1690 | unsigned int offset) | |
1691 | { | |
1692 | NAPI_GRO_CB(skb)->frag0 = NULL; | |
1693 | NAPI_GRO_CB(skb)->frag0_len = 0; | |
1694 | return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL; | |
86911732 | 1695 | } |
1da177e4 | 1696 | |
aa4b9f53 HX |
1697 | static inline void *skb_gro_mac_header(struct sk_buff *skb) |
1698 | { | |
78d3fd0b | 1699 | return NAPI_GRO_CB(skb)->frag0 ?: skb_mac_header(skb); |
aa4b9f53 HX |
1700 | } |
1701 | ||
36e7b1b8 HX |
1702 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
1703 | { | |
78d3fd0b HX |
1704 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
1705 | skb_network_offset(skb); | |
36e7b1b8 HX |
1706 | } |
1707 | ||
0c4e8581 SH |
1708 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
1709 | unsigned short type, | |
3b04ddde SH |
1710 | const void *daddr, const void *saddr, |
1711 | unsigned len) | |
0c4e8581 | 1712 | { |
f1ecfd5d | 1713 | if (!dev->header_ops || !dev->header_ops->create) |
0c4e8581 | 1714 | return 0; |
3b04ddde SH |
1715 | |
1716 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
0c4e8581 SH |
1717 | } |
1718 | ||
b95cce35 SH |
1719 | static inline int dev_parse_header(const struct sk_buff *skb, |
1720 | unsigned char *haddr) | |
1721 | { | |
1722 | const struct net_device *dev = skb->dev; | |
1723 | ||
1b83336b | 1724 | if (!dev->header_ops || !dev->header_ops->parse) |
b95cce35 | 1725 | return 0; |
3b04ddde | 1726 | return dev->header_ops->parse(skb, haddr); |
b95cce35 SH |
1727 | } |
1728 | ||
1da177e4 LT |
1729 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
1730 | extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); | |
1731 | static inline int unregister_gifconf(unsigned int family) | |
1732 | { | |
1733 | return register_gifconf(family, NULL); | |
1734 | } | |
1735 | ||
1736 | /* | |
88751275 | 1737 | * Incoming packets are placed on per-cpu queues |
1da177e4 | 1738 | */ |
d94d9fee | 1739 | struct softnet_data { |
37437bb2 | 1740 | struct Qdisc *output_queue; |
a9cbd588 | 1741 | struct Qdisc **output_queue_tailp; |
1da177e4 | 1742 | struct list_head poll_list; |
1da177e4 | 1743 | struct sk_buff *completion_queue; |
6e7676c1 | 1744 | struct sk_buff_head process_queue; |
1da177e4 | 1745 | |
dee42870 | 1746 | /* stats */ |
cd7b5396 DM |
1747 | unsigned int processed; |
1748 | unsigned int time_squeeze; | |
1749 | unsigned int cpu_collision; | |
1750 | unsigned int received_rps; | |
dee42870 | 1751 | |
fd793d89 | 1752 | #ifdef CONFIG_RPS |
88751275 ED |
1753 | struct softnet_data *rps_ipi_list; |
1754 | ||
1755 | /* Elements below can be accessed between CPUs for RPS */ | |
0a9627f2 | 1756 | struct call_single_data csd ____cacheline_aligned_in_smp; |
88751275 ED |
1757 | struct softnet_data *rps_ipi_next; |
1758 | unsigned int cpu; | |
fec5e652 | 1759 | unsigned int input_queue_head; |
76cc8b13 | 1760 | unsigned int input_queue_tail; |
1e94d72f | 1761 | #endif |
dee42870 | 1762 | unsigned dropped; |
0a9627f2 | 1763 | struct sk_buff_head input_pkt_queue; |
bea3348e | 1764 | struct napi_struct backlog; |
1da177e4 LT |
1765 | }; |
1766 | ||
76cc8b13 | 1767 | static inline void input_queue_head_incr(struct softnet_data *sd) |
fec5e652 TH |
1768 | { |
1769 | #ifdef CONFIG_RPS | |
76cc8b13 TH |
1770 | sd->input_queue_head++; |
1771 | #endif | |
1772 | } | |
1773 | ||
1774 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, | |
1775 | unsigned int *qtail) | |
1776 | { | |
1777 | #ifdef CONFIG_RPS | |
1778 | *qtail = ++sd->input_queue_tail; | |
fec5e652 TH |
1779 | #endif |
1780 | } | |
1781 | ||
0a9627f2 | 1782 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
1da177e4 LT |
1783 | |
1784 | #define HAVE_NETIF_QUEUE | |
1785 | ||
37437bb2 | 1786 | extern void __netif_schedule(struct Qdisc *q); |
1da177e4 | 1787 | |
86d804e1 | 1788 | static inline void netif_schedule_queue(struct netdev_queue *txq) |
1da177e4 | 1789 | { |
79d16385 | 1790 | if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1791 | __netif_schedule(txq->qdisc); |
86d804e1 DM |
1792 | } |
1793 | ||
fd2ea0a7 DM |
1794 | static inline void netif_tx_schedule_all(struct net_device *dev) |
1795 | { | |
1796 | unsigned int i; | |
1797 | ||
1798 | for (i = 0; i < dev->num_tx_queues; i++) | |
1799 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
1800 | } | |
1801 | ||
d29f749e DJ |
1802 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
1803 | { | |
1804 | clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1805 | } | |
1806 | ||
bea3348e SH |
1807 | /** |
1808 | * netif_start_queue - allow transmit | |
1809 | * @dev: network device | |
1810 | * | |
1811 | * Allow upper layers to call the device hard_start_xmit routine. | |
1812 | */ | |
1da177e4 LT |
1813 | static inline void netif_start_queue(struct net_device *dev) |
1814 | { | |
e8a0464c | 1815 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1816 | } |
1817 | ||
fd2ea0a7 DM |
1818 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
1819 | { | |
1820 | unsigned int i; | |
1821 | ||
1822 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1823 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1824 | netif_tx_start_queue(txq); | |
1825 | } | |
1826 | } | |
1827 | ||
79d16385 | 1828 | static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) |
1da177e4 LT |
1829 | { |
1830 | #ifdef CONFIG_NETPOLL_TRAP | |
5f286e11 | 1831 | if (netpoll_trap()) { |
7b3d3e4f | 1832 | netif_tx_start_queue(dev_queue); |
1da177e4 | 1833 | return; |
5f286e11 | 1834 | } |
1da177e4 | 1835 | #endif |
79d16385 | 1836 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state)) |
37437bb2 | 1837 | __netif_schedule(dev_queue->qdisc); |
79d16385 DM |
1838 | } |
1839 | ||
d29f749e DJ |
1840 | /** |
1841 | * netif_wake_queue - restart transmit | |
1842 | * @dev: network device | |
1843 | * | |
1844 | * Allow upper layers to call the device hard_start_xmit routine. | |
1845 | * Used for flow control when transmit resources are available. | |
1846 | */ | |
79d16385 DM |
1847 | static inline void netif_wake_queue(struct net_device *dev) |
1848 | { | |
e8a0464c | 1849 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1850 | } |
1851 | ||
fd2ea0a7 DM |
1852 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
1853 | { | |
1854 | unsigned int i; | |
1855 | ||
1856 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1857 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1858 | netif_tx_wake_queue(txq); | |
1859 | } | |
1860 | } | |
1861 | ||
d29f749e DJ |
1862 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
1863 | { | |
18543a64 | 1864 | if (WARN_ON(!dev_queue)) { |
256ee435 | 1865 | pr_info("netif_stop_queue() cannot be called before register_netdev()\n"); |
18543a64 GC |
1866 | return; |
1867 | } | |
d29f749e DJ |
1868 | set_bit(__QUEUE_STATE_XOFF, &dev_queue->state); |
1869 | } | |
1870 | ||
bea3348e SH |
1871 | /** |
1872 | * netif_stop_queue - stop transmitted packets | |
1873 | * @dev: network device | |
1874 | * | |
1875 | * Stop upper layers calling the device hard_start_xmit routine. | |
1876 | * Used for flow control when transmit resources are unavailable. | |
1877 | */ | |
1da177e4 LT |
1878 | static inline void netif_stop_queue(struct net_device *dev) |
1879 | { | |
e8a0464c | 1880 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1881 | } |
1882 | ||
fd2ea0a7 DM |
1883 | static inline void netif_tx_stop_all_queues(struct net_device *dev) |
1884 | { | |
1885 | unsigned int i; | |
1886 | ||
1887 | for (i = 0; i < dev->num_tx_queues; i++) { | |
1888 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
1889 | netif_tx_stop_queue(txq); | |
1890 | } | |
1891 | } | |
1892 | ||
d29f749e DJ |
1893 | static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
1894 | { | |
1895 | return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
1896 | } | |
1897 | ||
bea3348e SH |
1898 | /** |
1899 | * netif_queue_stopped - test if transmit queue is flowblocked | |
1900 | * @dev: network device | |
1901 | * | |
1902 | * Test if transmit queue on device is currently unable to send. | |
1903 | */ | |
1da177e4 LT |
1904 | static inline int netif_queue_stopped(const struct net_device *dev) |
1905 | { | |
e8a0464c | 1906 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
1da177e4 LT |
1907 | } |
1908 | ||
5a0d2268 | 1909 | static inline int netif_tx_queue_frozen_or_stopped(const struct netdev_queue *dev_queue) |
c3f26a26 | 1910 | { |
5a0d2268 | 1911 | return dev_queue->state & QUEUE_STATE_XOFF_OR_FROZEN; |
c3f26a26 DM |
1912 | } |
1913 | ||
bea3348e SH |
1914 | /** |
1915 | * netif_running - test if up | |
1916 | * @dev: network device | |
1917 | * | |
1918 | * Test if the device has been brought up. | |
1919 | */ | |
1da177e4 LT |
1920 | static inline int netif_running(const struct net_device *dev) |
1921 | { | |
1922 | return test_bit(__LINK_STATE_START, &dev->state); | |
1923 | } | |
1924 | ||
f25f4e44 PWJ |
1925 | /* |
1926 | * Routines to manage the subqueues on a device. We only need start | |
1927 | * stop, and a check if it's stopped. All other device management is | |
1928 | * done at the overall netdevice level. | |
1929 | * Also test the device if we're multiqueue. | |
1930 | */ | |
bea3348e SH |
1931 | |
1932 | /** | |
1933 | * netif_start_subqueue - allow sending packets on subqueue | |
1934 | * @dev: network device | |
1935 | * @queue_index: sub queue index | |
1936 | * | |
1937 | * Start individual transmit queue of a device with multiple transmit queues. | |
1938 | */ | |
f25f4e44 PWJ |
1939 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
1940 | { | |
fd2ea0a7 | 1941 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
1942 | |
1943 | netif_tx_start_queue(txq); | |
f25f4e44 PWJ |
1944 | } |
1945 | ||
bea3348e SH |
1946 | /** |
1947 | * netif_stop_subqueue - stop sending packets on subqueue | |
1948 | * @dev: network device | |
1949 | * @queue_index: sub queue index | |
1950 | * | |
1951 | * Stop individual transmit queue of a device with multiple transmit queues. | |
1952 | */ | |
f25f4e44 PWJ |
1953 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
1954 | { | |
fd2ea0a7 | 1955 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1956 | #ifdef CONFIG_NETPOLL_TRAP |
1957 | if (netpoll_trap()) | |
1958 | return; | |
1959 | #endif | |
7b3d3e4f | 1960 | netif_tx_stop_queue(txq); |
f25f4e44 PWJ |
1961 | } |
1962 | ||
bea3348e SH |
1963 | /** |
1964 | * netif_subqueue_stopped - test status of subqueue | |
1965 | * @dev: network device | |
1966 | * @queue_index: sub queue index | |
1967 | * | |
1968 | * Check individual transmit queue of a device with multiple transmit queues. | |
1969 | */ | |
668f895a | 1970 | static inline int __netif_subqueue_stopped(const struct net_device *dev, |
f25f4e44 PWJ |
1971 | u16 queue_index) |
1972 | { | |
fd2ea0a7 | 1973 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
7b3d3e4f KK |
1974 | |
1975 | return netif_tx_queue_stopped(txq); | |
f25f4e44 PWJ |
1976 | } |
1977 | ||
668f895a PE |
1978 | static inline int netif_subqueue_stopped(const struct net_device *dev, |
1979 | struct sk_buff *skb) | |
1980 | { | |
1981 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
1982 | } | |
bea3348e SH |
1983 | |
1984 | /** | |
1985 | * netif_wake_subqueue - allow sending packets on subqueue | |
1986 | * @dev: network device | |
1987 | * @queue_index: sub queue index | |
1988 | * | |
1989 | * Resume individual transmit queue of a device with multiple transmit queues. | |
1990 | */ | |
f25f4e44 PWJ |
1991 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) |
1992 | { | |
fd2ea0a7 | 1993 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
f25f4e44 PWJ |
1994 | #ifdef CONFIG_NETPOLL_TRAP |
1995 | if (netpoll_trap()) | |
1996 | return; | |
1997 | #endif | |
fd2ea0a7 | 1998 | if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state)) |
37437bb2 | 1999 | __netif_schedule(txq->qdisc); |
f25f4e44 PWJ |
2000 | } |
2001 | ||
a3d22a68 VZ |
2002 | /* |
2003 | * Returns a Tx hash for the given packet when dev->real_num_tx_queues is used | |
2004 | * as a distribution range limit for the returned value. | |
2005 | */ | |
2006 | static inline u16 skb_tx_hash(const struct net_device *dev, | |
2007 | const struct sk_buff *skb) | |
2008 | { | |
2009 | return __skb_tx_hash(dev, skb, dev->real_num_tx_queues); | |
2010 | } | |
2011 | ||
bea3348e SH |
2012 | /** |
2013 | * netif_is_multiqueue - test if device has multiple transmit queues | |
2014 | * @dev: network device | |
2015 | * | |
2016 | * Check if device has multiple transmit queues | |
bea3348e | 2017 | */ |
f25f4e44 PWJ |
2018 | static inline int netif_is_multiqueue(const struct net_device *dev) |
2019 | { | |
a02cec21 | 2020 | return dev->num_tx_queues > 1; |
f25f4e44 | 2021 | } |
1da177e4 | 2022 | |
e6484930 TH |
2023 | extern int netif_set_real_num_tx_queues(struct net_device *dev, |
2024 | unsigned int txq); | |
f0796d5c | 2025 | |
62fe0b40 BH |
2026 | #ifdef CONFIG_RPS |
2027 | extern int netif_set_real_num_rx_queues(struct net_device *dev, | |
2028 | unsigned int rxq); | |
2029 | #else | |
2030 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, | |
2031 | unsigned int rxq) | |
2032 | { | |
2033 | return 0; | |
2034 | } | |
2035 | #endif | |
2036 | ||
3171d026 BH |
2037 | static inline int netif_copy_real_num_queues(struct net_device *to_dev, |
2038 | const struct net_device *from_dev) | |
2039 | { | |
2040 | netif_set_real_num_tx_queues(to_dev, from_dev->real_num_tx_queues); | |
2041 | #ifdef CONFIG_RPS | |
2042 | return netif_set_real_num_rx_queues(to_dev, | |
2043 | from_dev->real_num_rx_queues); | |
2044 | #else | |
2045 | return 0; | |
2046 | #endif | |
2047 | } | |
2048 | ||
1da177e4 | 2049 | /* Use this variant when it is known for sure that it |
0ef47309 ML |
2050 | * is executing from hardware interrupt context or with hardware interrupts |
2051 | * disabled. | |
1da177e4 | 2052 | */ |
bea3348e | 2053 | extern void dev_kfree_skb_irq(struct sk_buff *skb); |
1da177e4 LT |
2054 | |
2055 | /* Use this variant in places where it could be invoked | |
0ef47309 ML |
2056 | * from either hardware interrupt or other context, with hardware interrupts |
2057 | * either disabled or enabled. | |
1da177e4 | 2058 | */ |
56079431 | 2059 | extern void dev_kfree_skb_any(struct sk_buff *skb); |
1da177e4 LT |
2060 | |
2061 | #define HAVE_NETIF_RX 1 | |
2062 | extern int netif_rx(struct sk_buff *skb); | |
2063 | extern int netif_rx_ni(struct sk_buff *skb); | |
2064 | #define HAVE_NETIF_RECEIVE_SKB 1 | |
2065 | extern int netif_receive_skb(struct sk_buff *skb); | |
5b252f0c | 2066 | extern gro_result_t dev_gro_receive(struct napi_struct *napi, |
96e93eab | 2067 | struct sk_buff *skb); |
c7c4b3b6 BH |
2068 | extern gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb); |
2069 | extern gro_result_t napi_gro_receive(struct napi_struct *napi, | |
d565b0a1 | 2070 | struct sk_buff *skb); |
86cac58b | 2071 | extern void napi_gro_flush(struct napi_struct *napi); |
76620aaf | 2072 | extern struct sk_buff * napi_get_frags(struct napi_struct *napi); |
c7c4b3b6 | 2073 | extern gro_result_t napi_frags_finish(struct napi_struct *napi, |
5b252f0c BH |
2074 | struct sk_buff *skb, |
2075 | gro_result_t ret); | |
76620aaf | 2076 | extern struct sk_buff * napi_frags_skb(struct napi_struct *napi); |
c7c4b3b6 | 2077 | extern gro_result_t napi_gro_frags(struct napi_struct *napi); |
76620aaf HX |
2078 | |
2079 | static inline void napi_free_frags(struct napi_struct *napi) | |
2080 | { | |
2081 | kfree_skb(napi->skb); | |
2082 | napi->skb = NULL; | |
2083 | } | |
2084 | ||
ab95bfe0 | 2085 | extern int netdev_rx_handler_register(struct net_device *dev, |
93e2c32b JP |
2086 | rx_handler_func_t *rx_handler, |
2087 | void *rx_handler_data); | |
ab95bfe0 JP |
2088 | extern void netdev_rx_handler_unregister(struct net_device *dev); |
2089 | ||
c2373ee9 | 2090 | extern int dev_valid_name(const char *name); |
881d966b EB |
2091 | extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); |
2092 | extern int dev_ethtool(struct net *net, struct ifreq *); | |
1da177e4 | 2093 | extern unsigned dev_get_flags(const struct net_device *); |
bd380811 | 2094 | extern int __dev_change_flags(struct net_device *, unsigned int flags); |
1da177e4 | 2095 | extern int dev_change_flags(struct net_device *, unsigned); |
bd380811 | 2096 | extern void __dev_notify_flags(struct net_device *, unsigned int old_flags); |
cf04a4c7 | 2097 | extern int dev_change_name(struct net_device *, const char *); |
0b815a1a | 2098 | extern int dev_set_alias(struct net_device *, const char *, size_t); |
ce286d32 EB |
2099 | extern int dev_change_net_namespace(struct net_device *, |
2100 | struct net *, const char *); | |
1da177e4 | 2101 | extern int dev_set_mtu(struct net_device *, int); |
cbda10fa | 2102 | extern void dev_set_group(struct net_device *, int); |
1da177e4 LT |
2103 | extern int dev_set_mac_address(struct net_device *, |
2104 | struct sockaddr *); | |
f6a78bfc | 2105 | extern int dev_hard_start_xmit(struct sk_buff *skb, |
fd2ea0a7 DM |
2106 | struct net_device *dev, |
2107 | struct netdev_queue *txq); | |
44540960 AB |
2108 | extern int dev_forward_skb(struct net_device *dev, |
2109 | struct sk_buff *skb); | |
1da177e4 | 2110 | |
20380731 | 2111 | extern int netdev_budget; |
1da177e4 LT |
2112 | |
2113 | /* Called by rtnetlink.c:rtnl_unlock() */ | |
2114 | extern void netdev_run_todo(void); | |
2115 | ||
bea3348e SH |
2116 | /** |
2117 | * dev_put - release reference to device | |
2118 | * @dev: network device | |
2119 | * | |
9ef4429b | 2120 | * Release reference to device to allow it to be freed. |
bea3348e | 2121 | */ |
1da177e4 LT |
2122 | static inline void dev_put(struct net_device *dev) |
2123 | { | |
29b4433d | 2124 | irqsafe_cpu_dec(*dev->pcpu_refcnt); |
1da177e4 LT |
2125 | } |
2126 | ||
bea3348e SH |
2127 | /** |
2128 | * dev_hold - get reference to device | |
2129 | * @dev: network device | |
2130 | * | |
9ef4429b | 2131 | * Hold reference to device to keep it from being freed. |
bea3348e | 2132 | */ |
15333061 SH |
2133 | static inline void dev_hold(struct net_device *dev) |
2134 | { | |
29b4433d | 2135 | irqsafe_cpu_inc(*dev->pcpu_refcnt); |
15333061 | 2136 | } |
1da177e4 LT |
2137 | |
2138 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
2139 | * and _off may be called from IRQ context, but it is caller | |
2140 | * who is responsible for serialization of these calls. | |
b00055aa SR |
2141 | * |
2142 | * The name carrier is inappropriate, these functions should really be | |
2143 | * called netif_lowerlayer_*() because they represent the state of any | |
2144 | * kind of lower layer not just hardware media. | |
1da177e4 LT |
2145 | */ |
2146 | ||
2147 | extern void linkwatch_fire_event(struct net_device *dev); | |
e014debe | 2148 | extern void linkwatch_forget_dev(struct net_device *dev); |
1da177e4 | 2149 | |
bea3348e SH |
2150 | /** |
2151 | * netif_carrier_ok - test if carrier present | |
2152 | * @dev: network device | |
2153 | * | |
2154 | * Check if carrier is present on device | |
2155 | */ | |
1da177e4 LT |
2156 | static inline int netif_carrier_ok(const struct net_device *dev) |
2157 | { | |
2158 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
2159 | } | |
2160 | ||
9d21493b ED |
2161 | extern unsigned long dev_trans_start(struct net_device *dev); |
2162 | ||
1da177e4 LT |
2163 | extern void __netdev_watchdog_up(struct net_device *dev); |
2164 | ||
0a242efc | 2165 | extern void netif_carrier_on(struct net_device *dev); |
1da177e4 | 2166 | |
0a242efc | 2167 | extern void netif_carrier_off(struct net_device *dev); |
1da177e4 | 2168 | |
06c4648d IC |
2169 | extern void netif_notify_peers(struct net_device *dev); |
2170 | ||
bea3348e SH |
2171 | /** |
2172 | * netif_dormant_on - mark device as dormant. | |
2173 | * @dev: network device | |
2174 | * | |
2175 | * Mark device as dormant (as per RFC2863). | |
2176 | * | |
2177 | * The dormant state indicates that the relevant interface is not | |
2178 | * actually in a condition to pass packets (i.e., it is not 'up') but is | |
2179 | * in a "pending" state, waiting for some external event. For "on- | |
2180 | * demand" interfaces, this new state identifies the situation where the | |
2181 | * interface is waiting for events to place it in the up state. | |
2182 | * | |
2183 | */ | |
b00055aa SR |
2184 | static inline void netif_dormant_on(struct net_device *dev) |
2185 | { | |
2186 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
2187 | linkwatch_fire_event(dev); | |
2188 | } | |
2189 | ||
bea3348e SH |
2190 | /** |
2191 | * netif_dormant_off - set device as not dormant. | |
2192 | * @dev: network device | |
2193 | * | |
2194 | * Device is not in dormant state. | |
2195 | */ | |
b00055aa SR |
2196 | static inline void netif_dormant_off(struct net_device *dev) |
2197 | { | |
2198 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
2199 | linkwatch_fire_event(dev); | |
2200 | } | |
2201 | ||
bea3348e SH |
2202 | /** |
2203 | * netif_dormant - test if carrier present | |
2204 | * @dev: network device | |
2205 | * | |
2206 | * Check if carrier is present on device | |
2207 | */ | |
b00055aa SR |
2208 | static inline int netif_dormant(const struct net_device *dev) |
2209 | { | |
2210 | return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
2211 | } | |
2212 | ||
2213 | ||
bea3348e SH |
2214 | /** |
2215 | * netif_oper_up - test if device is operational | |
2216 | * @dev: network device | |
2217 | * | |
2218 | * Check if carrier is operational | |
2219 | */ | |
d94d9fee ED |
2220 | static inline int netif_oper_up(const struct net_device *dev) |
2221 | { | |
b00055aa SR |
2222 | return (dev->operstate == IF_OPER_UP || |
2223 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
2224 | } | |
2225 | ||
bea3348e SH |
2226 | /** |
2227 | * netif_device_present - is device available or removed | |
2228 | * @dev: network device | |
2229 | * | |
2230 | * Check if device has not been removed from system. | |
2231 | */ | |
1da177e4 LT |
2232 | static inline int netif_device_present(struct net_device *dev) |
2233 | { | |
2234 | return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
2235 | } | |
2236 | ||
56079431 | 2237 | extern void netif_device_detach(struct net_device *dev); |
1da177e4 | 2238 | |
56079431 | 2239 | extern void netif_device_attach(struct net_device *dev); |
1da177e4 LT |
2240 | |
2241 | /* | |
2242 | * Network interface message level settings | |
2243 | */ | |
2244 | #define HAVE_NETIF_MSG 1 | |
2245 | ||
2246 | enum { | |
2247 | NETIF_MSG_DRV = 0x0001, | |
2248 | NETIF_MSG_PROBE = 0x0002, | |
2249 | NETIF_MSG_LINK = 0x0004, | |
2250 | NETIF_MSG_TIMER = 0x0008, | |
2251 | NETIF_MSG_IFDOWN = 0x0010, | |
2252 | NETIF_MSG_IFUP = 0x0020, | |
2253 | NETIF_MSG_RX_ERR = 0x0040, | |
2254 | NETIF_MSG_TX_ERR = 0x0080, | |
2255 | NETIF_MSG_TX_QUEUED = 0x0100, | |
2256 | NETIF_MSG_INTR = 0x0200, | |
2257 | NETIF_MSG_TX_DONE = 0x0400, | |
2258 | NETIF_MSG_RX_STATUS = 0x0800, | |
2259 | NETIF_MSG_PKTDATA = 0x1000, | |
2260 | NETIF_MSG_HW = 0x2000, | |
2261 | NETIF_MSG_WOL = 0x4000, | |
2262 | }; | |
2263 | ||
2264 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
2265 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
2266 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
2267 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
2268 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
2269 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
2270 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
2271 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
2272 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
2273 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
2274 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
2275 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
2276 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
2277 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
2278 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
2279 | ||
2280 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
2281 | { | |
2282 | /* use default */ | |
2283 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
2284 | return default_msg_enable_bits; | |
2285 | if (debug_value == 0) /* no output */ | |
2286 | return 0; | |
2287 | /* set low N bits */ | |
2288 | return (1 << debug_value) - 1; | |
2289 | } | |
2290 | ||
c773e847 | 2291 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
932ff279 | 2292 | { |
c773e847 DM |
2293 | spin_lock(&txq->_xmit_lock); |
2294 | txq->xmit_lock_owner = cpu; | |
22dd7495 JHS |
2295 | } |
2296 | ||
fd2ea0a7 DM |
2297 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
2298 | { | |
2299 | spin_lock_bh(&txq->_xmit_lock); | |
2300 | txq->xmit_lock_owner = smp_processor_id(); | |
2301 | } | |
2302 | ||
c3f26a26 DM |
2303 | static inline int __netif_tx_trylock(struct netdev_queue *txq) |
2304 | { | |
2305 | int ok = spin_trylock(&txq->_xmit_lock); | |
2306 | if (likely(ok)) | |
2307 | txq->xmit_lock_owner = smp_processor_id(); | |
2308 | return ok; | |
2309 | } | |
2310 | ||
2311 | static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
2312 | { | |
2313 | txq->xmit_lock_owner = -1; | |
2314 | spin_unlock(&txq->_xmit_lock); | |
2315 | } | |
2316 | ||
2317 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
2318 | { | |
2319 | txq->xmit_lock_owner = -1; | |
2320 | spin_unlock_bh(&txq->_xmit_lock); | |
2321 | } | |
2322 | ||
08baf561 ED |
2323 | static inline void txq_trans_update(struct netdev_queue *txq) |
2324 | { | |
2325 | if (txq->xmit_lock_owner != -1) | |
2326 | txq->trans_start = jiffies; | |
2327 | } | |
2328 | ||
d29f749e DJ |
2329 | /** |
2330 | * netif_tx_lock - grab network device transmit lock | |
2331 | * @dev: network device | |
d29f749e DJ |
2332 | * |
2333 | * Get network device transmit lock | |
2334 | */ | |
22dd7495 JHS |
2335 | static inline void netif_tx_lock(struct net_device *dev) |
2336 | { | |
e8a0464c | 2337 | unsigned int i; |
c3f26a26 | 2338 | int cpu; |
c773e847 | 2339 | |
c3f26a26 DM |
2340 | spin_lock(&dev->tx_global_lock); |
2341 | cpu = smp_processor_id(); | |
e8a0464c DM |
2342 | for (i = 0; i < dev->num_tx_queues; i++) { |
2343 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
2344 | |
2345 | /* We are the only thread of execution doing a | |
2346 | * freeze, but we have to grab the _xmit_lock in | |
2347 | * order to synchronize with threads which are in | |
2348 | * the ->hard_start_xmit() handler and already | |
2349 | * checked the frozen bit. | |
2350 | */ | |
e8a0464c | 2351 | __netif_tx_lock(txq, cpu); |
c3f26a26 DM |
2352 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
2353 | __netif_tx_unlock(txq); | |
e8a0464c | 2354 | } |
932ff279 HX |
2355 | } |
2356 | ||
2357 | static inline void netif_tx_lock_bh(struct net_device *dev) | |
2358 | { | |
e8a0464c DM |
2359 | local_bh_disable(); |
2360 | netif_tx_lock(dev); | |
932ff279 HX |
2361 | } |
2362 | ||
932ff279 HX |
2363 | static inline void netif_tx_unlock(struct net_device *dev) |
2364 | { | |
e8a0464c DM |
2365 | unsigned int i; |
2366 | ||
2367 | for (i = 0; i < dev->num_tx_queues; i++) { | |
2368 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c773e847 | 2369 | |
c3f26a26 DM |
2370 | /* No need to grab the _xmit_lock here. If the |
2371 | * queue is not stopped for another reason, we | |
2372 | * force a schedule. | |
2373 | */ | |
2374 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
7b3d3e4f | 2375 | netif_schedule_queue(txq); |
c3f26a26 DM |
2376 | } |
2377 | spin_unlock(&dev->tx_global_lock); | |
932ff279 HX |
2378 | } |
2379 | ||
2380 | static inline void netif_tx_unlock_bh(struct net_device *dev) | |
2381 | { | |
e8a0464c DM |
2382 | netif_tx_unlock(dev); |
2383 | local_bh_enable(); | |
932ff279 HX |
2384 | } |
2385 | ||
c773e847 | 2386 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
22dd7495 | 2387 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 2388 | __netif_tx_lock(txq, cpu); \ |
22dd7495 JHS |
2389 | } \ |
2390 | } | |
2391 | ||
c773e847 | 2392 | #define HARD_TX_UNLOCK(dev, txq) { \ |
22dd7495 | 2393 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
c773e847 | 2394 | __netif_tx_unlock(txq); \ |
22dd7495 JHS |
2395 | } \ |
2396 | } | |
2397 | ||
1da177e4 LT |
2398 | static inline void netif_tx_disable(struct net_device *dev) |
2399 | { | |
fd2ea0a7 | 2400 | unsigned int i; |
c3f26a26 | 2401 | int cpu; |
fd2ea0a7 | 2402 | |
c3f26a26 DM |
2403 | local_bh_disable(); |
2404 | cpu = smp_processor_id(); | |
fd2ea0a7 DM |
2405 | for (i = 0; i < dev->num_tx_queues; i++) { |
2406 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
c3f26a26 DM |
2407 | |
2408 | __netif_tx_lock(txq, cpu); | |
fd2ea0a7 | 2409 | netif_tx_stop_queue(txq); |
c3f26a26 | 2410 | __netif_tx_unlock(txq); |
fd2ea0a7 | 2411 | } |
c3f26a26 | 2412 | local_bh_enable(); |
1da177e4 LT |
2413 | } |
2414 | ||
e308a5d8 DM |
2415 | static inline void netif_addr_lock(struct net_device *dev) |
2416 | { | |
2417 | spin_lock(&dev->addr_list_lock); | |
2418 | } | |
2419 | ||
2420 | static inline void netif_addr_lock_bh(struct net_device *dev) | |
2421 | { | |
2422 | spin_lock_bh(&dev->addr_list_lock); | |
2423 | } | |
2424 | ||
2425 | static inline void netif_addr_unlock(struct net_device *dev) | |
2426 | { | |
2427 | spin_unlock(&dev->addr_list_lock); | |
2428 | } | |
2429 | ||
2430 | static inline void netif_addr_unlock_bh(struct net_device *dev) | |
2431 | { | |
2432 | spin_unlock_bh(&dev->addr_list_lock); | |
2433 | } | |
2434 | ||
f001fde5 | 2435 | /* |
31278e71 | 2436 | * dev_addrs walker. Should be used only for read access. Call with |
f001fde5 JP |
2437 | * rcu_read_lock held. |
2438 | */ | |
2439 | #define for_each_dev_addr(dev, ha) \ | |
31278e71 | 2440 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
f001fde5 | 2441 | |
1da177e4 LT |
2442 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
2443 | ||
2444 | extern void ether_setup(struct net_device *dev); | |
2445 | ||
2446 | /* Support for loadable net-drivers */ | |
36909ea4 | 2447 | extern struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, |
f25f4e44 | 2448 | void (*setup)(struct net_device *), |
36909ea4 | 2449 | unsigned int txqs, unsigned int rxqs); |
f25f4e44 | 2450 | #define alloc_netdev(sizeof_priv, name, setup) \ |
36909ea4 TH |
2451 | alloc_netdev_mqs(sizeof_priv, name, setup, 1, 1) |
2452 | ||
2453 | #define alloc_netdev_mq(sizeof_priv, name, setup, count) \ | |
2454 | alloc_netdev_mqs(sizeof_priv, name, setup, count, count) | |
2455 | ||
1da177e4 LT |
2456 | extern int register_netdev(struct net_device *dev); |
2457 | extern void unregister_netdev(struct net_device *dev); | |
f001fde5 | 2458 | |
22bedad3 JP |
2459 | /* General hardware address lists handling functions */ |
2460 | extern int __hw_addr_add_multiple(struct netdev_hw_addr_list *to_list, | |
2461 | struct netdev_hw_addr_list *from_list, | |
2462 | int addr_len, unsigned char addr_type); | |
2463 | extern void __hw_addr_del_multiple(struct netdev_hw_addr_list *to_list, | |
2464 | struct netdev_hw_addr_list *from_list, | |
2465 | int addr_len, unsigned char addr_type); | |
2466 | extern int __hw_addr_sync(struct netdev_hw_addr_list *to_list, | |
2467 | struct netdev_hw_addr_list *from_list, | |
2468 | int addr_len); | |
2469 | extern void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, | |
2470 | struct netdev_hw_addr_list *from_list, | |
2471 | int addr_len); | |
2472 | extern void __hw_addr_flush(struct netdev_hw_addr_list *list); | |
2473 | extern void __hw_addr_init(struct netdev_hw_addr_list *list); | |
2474 | ||
f001fde5 JP |
2475 | /* Functions used for device addresses handling */ |
2476 | extern int dev_addr_add(struct net_device *dev, unsigned char *addr, | |
2477 | unsigned char addr_type); | |
2478 | extern int dev_addr_del(struct net_device *dev, unsigned char *addr, | |
2479 | unsigned char addr_type); | |
2480 | extern int dev_addr_add_multiple(struct net_device *to_dev, | |
2481 | struct net_device *from_dev, | |
2482 | unsigned char addr_type); | |
2483 | extern int dev_addr_del_multiple(struct net_device *to_dev, | |
2484 | struct net_device *from_dev, | |
2485 | unsigned char addr_type); | |
a748ee24 JP |
2486 | extern void dev_addr_flush(struct net_device *dev); |
2487 | extern int dev_addr_init(struct net_device *dev); | |
2488 | ||
2489 | /* Functions used for unicast addresses handling */ | |
2490 | extern int dev_uc_add(struct net_device *dev, unsigned char *addr); | |
2491 | extern int dev_uc_del(struct net_device *dev, unsigned char *addr); | |
2492 | extern int dev_uc_sync(struct net_device *to, struct net_device *from); | |
2493 | extern void dev_uc_unsync(struct net_device *to, struct net_device *from); | |
2494 | extern void dev_uc_flush(struct net_device *dev); | |
2495 | extern void dev_uc_init(struct net_device *dev); | |
f001fde5 | 2496 | |
22bedad3 JP |
2497 | /* Functions used for multicast addresses handling */ |
2498 | extern int dev_mc_add(struct net_device *dev, unsigned char *addr); | |
2499 | extern int dev_mc_add_global(struct net_device *dev, unsigned char *addr); | |
2500 | extern int dev_mc_del(struct net_device *dev, unsigned char *addr); | |
2501 | extern int dev_mc_del_global(struct net_device *dev, unsigned char *addr); | |
2502 | extern int dev_mc_sync(struct net_device *to, struct net_device *from); | |
2503 | extern void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
2504 | extern void dev_mc_flush(struct net_device *dev); | |
2505 | extern void dev_mc_init(struct net_device *dev); | |
f001fde5 | 2506 | |
4417da66 PM |
2507 | /* Functions used for secondary unicast and multicast support */ |
2508 | extern void dev_set_rx_mode(struct net_device *dev); | |
2509 | extern void __dev_set_rx_mode(struct net_device *dev); | |
dad9b335 WC |
2510 | extern int dev_set_promiscuity(struct net_device *dev, int inc); |
2511 | extern int dev_set_allmulti(struct net_device *dev, int inc); | |
1da177e4 | 2512 | extern void netdev_state_change(struct net_device *dev); |
3ca5b404 | 2513 | extern int netdev_bonding_change(struct net_device *dev, |
75c78500 | 2514 | unsigned long event); |
d8a33ac4 | 2515 | extern void netdev_features_change(struct net_device *dev); |
1da177e4 | 2516 | /* Load a device via the kmod */ |
881d966b | 2517 | extern void dev_load(struct net *net, const char *name); |
1da177e4 | 2518 | extern void dev_mcast_init(void); |
d7753516 BH |
2519 | extern struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, |
2520 | struct rtnl_link_stats64 *storage); | |
eeda3fd6 | 2521 | |
1da177e4 | 2522 | extern int netdev_max_backlog; |
3b098e2d | 2523 | extern int netdev_tstamp_prequeue; |
1da177e4 | 2524 | extern int weight_p; |
0a14842f | 2525 | extern int bpf_jit_enable; |
1da177e4 | 2526 | extern int netdev_set_master(struct net_device *dev, struct net_device *master); |
1765a575 JP |
2527 | extern int netdev_set_bond_master(struct net_device *dev, |
2528 | struct net_device *master); | |
84fa7933 | 2529 | extern int skb_checksum_help(struct sk_buff *skb); |
04ed3e74 | 2530 | extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, u32 features); |
fb286bb2 HX |
2531 | #ifdef CONFIG_BUG |
2532 | extern void netdev_rx_csum_fault(struct net_device *dev); | |
2533 | #else | |
2534 | static inline void netdev_rx_csum_fault(struct net_device *dev) | |
2535 | { | |
2536 | } | |
2537 | #endif | |
1da177e4 LT |
2538 | /* rx skb timestamps */ |
2539 | extern void net_enable_timestamp(void); | |
2540 | extern void net_disable_timestamp(void); | |
2541 | ||
20380731 ACM |
2542 | #ifdef CONFIG_PROC_FS |
2543 | extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); | |
2544 | extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); | |
2545 | extern void dev_seq_stop(struct seq_file *seq, void *v); | |
2546 | #endif | |
2547 | ||
b8a9787e JV |
2548 | extern int netdev_class_create_file(struct class_attribute *class_attr); |
2549 | extern void netdev_class_remove_file(struct class_attribute *class_attr); | |
2550 | ||
04600794 JB |
2551 | extern struct kobj_ns_type_operations net_ns_type_operations; |
2552 | ||
3019de12 | 2553 | extern const char *netdev_drivername(const struct net_device *dev); |
6579e57b | 2554 | |
20380731 ACM |
2555 | extern void linkwatch_run_queue(void); |
2556 | ||
5455c699 MM |
2557 | static inline u32 netdev_get_wanted_features(struct net_device *dev) |
2558 | { | |
2559 | return (dev->features & ~dev->hw_features) | dev->wanted_features; | |
2560 | } | |
04ed3e74 | 2561 | u32 netdev_increment_features(u32 all, u32 one, u32 mask); |
acd1130e | 2562 | u32 netdev_fix_features(struct net_device *dev, u32 features); |
6cb6a27c | 2563 | int __netdev_update_features(struct net_device *dev); |
5455c699 | 2564 | void netdev_update_features(struct net_device *dev); |
afe12cc8 | 2565 | void netdev_change_features(struct net_device *dev); |
7f353bf2 | 2566 | |
fc4a7489 PM |
2567 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
2568 | struct net_device *dev); | |
2569 | ||
04ed3e74 | 2570 | u32 netif_skb_features(struct sk_buff *skb); |
58e998c6 | 2571 | |
04ed3e74 | 2572 | static inline int net_gso_ok(u32 features, int gso_type) |
576a30eb | 2573 | { |
bcd76111 | 2574 | int feature = gso_type << NETIF_F_GSO_SHIFT; |
d6b4991a | 2575 | return (features & feature) == feature; |
576a30eb HX |
2576 | } |
2577 | ||
04ed3e74 | 2578 | static inline int skb_gso_ok(struct sk_buff *skb, u32 features) |
bcd76111 | 2579 | { |
278b2513 | 2580 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
21dc3301 | 2581 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
bcd76111 HX |
2582 | } |
2583 | ||
fc741216 | 2584 | static inline int netif_needs_gso(struct sk_buff *skb, int features) |
7967168c | 2585 | { |
fc741216 JG |
2586 | return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || |
2587 | unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); | |
7967168c HX |
2588 | } |
2589 | ||
82cc1a7a PWJ |
2590 | static inline void netif_set_gso_max_size(struct net_device *dev, |
2591 | unsigned int size) | |
2592 | { | |
2593 | dev->gso_max_size = size; | |
2594 | } | |
2595 | ||
1765a575 JP |
2596 | static inline int netif_is_bond_slave(struct net_device *dev) |
2597 | { | |
2598 | return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING; | |
2599 | } | |
2600 | ||
505d4f73 | 2601 | extern struct pernet_operations __net_initdata loopback_net_ops; |
b1b67dd4 | 2602 | |
8ae6daca DD |
2603 | int dev_ethtool_get_settings(struct net_device *dev, |
2604 | struct ethtool_cmd *cmd); | |
b1b67dd4 PM |
2605 | |
2606 | static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev) | |
2607 | { | |
4dd5ffe4 MM |
2608 | if (dev->features & NETIF_F_RXCSUM) |
2609 | return 1; | |
b1b67dd4 PM |
2610 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum) |
2611 | return 0; | |
2612 | return dev->ethtool_ops->get_rx_csum(dev); | |
2613 | } | |
2614 | ||
2615 | static inline u32 dev_ethtool_get_flags(struct net_device *dev) | |
2616 | { | |
2617 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_flags) | |
2618 | return 0; | |
2619 | return dev->ethtool_ops->get_flags(dev); | |
2620 | } | |
571ba423 JP |
2621 | |
2622 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ | |
2623 | ||
2624 | /* netdev_printk helpers, similar to dev_printk */ | |
2625 | ||
2626 | static inline const char *netdev_name(const struct net_device *dev) | |
2627 | { | |
2628 | if (dev->reg_state != NETREG_REGISTERED) | |
2629 | return "(unregistered net_device)"; | |
2630 | return dev->name; | |
2631 | } | |
2632 | ||
256df2f3 JP |
2633 | extern int netdev_printk(const char *level, const struct net_device *dev, |
2634 | const char *format, ...) | |
2635 | __attribute__ ((format (printf, 3, 4))); | |
2636 | extern int netdev_emerg(const struct net_device *dev, const char *format, ...) | |
2637 | __attribute__ ((format (printf, 2, 3))); | |
2638 | extern int netdev_alert(const struct net_device *dev, const char *format, ...) | |
2639 | __attribute__ ((format (printf, 2, 3))); | |
2640 | extern int netdev_crit(const struct net_device *dev, const char *format, ...) | |
2641 | __attribute__ ((format (printf, 2, 3))); | |
2642 | extern int netdev_err(const struct net_device *dev, const char *format, ...) | |
2643 | __attribute__ ((format (printf, 2, 3))); | |
2644 | extern int netdev_warn(const struct net_device *dev, const char *format, ...) | |
2645 | __attribute__ ((format (printf, 2, 3))); | |
2646 | extern int netdev_notice(const struct net_device *dev, const char *format, ...) | |
2647 | __attribute__ ((format (printf, 2, 3))); | |
2648 | extern int netdev_info(const struct net_device *dev, const char *format, ...) | |
2649 | __attribute__ ((format (printf, 2, 3))); | |
571ba423 | 2650 | |
8909c9ad VK |
2651 | #define MODULE_ALIAS_NETDEV(device) \ |
2652 | MODULE_ALIAS("netdev-" device) | |
2653 | ||
571ba423 JP |
2654 | #if defined(DEBUG) |
2655 | #define netdev_dbg(__dev, format, args...) \ | |
2656 | netdev_printk(KERN_DEBUG, __dev, format, ##args) | |
2657 | #elif defined(CONFIG_DYNAMIC_DEBUG) | |
2658 | #define netdev_dbg(__dev, format, args...) \ | |
2659 | do { \ | |
2660 | dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \ | |
2661 | netdev_name(__dev), ##args); \ | |
2662 | } while (0) | |
2663 | #else | |
2664 | #define netdev_dbg(__dev, format, args...) \ | |
2665 | ({ \ | |
2666 | if (0) \ | |
2667 | netdev_printk(KERN_DEBUG, __dev, format, ##args); \ | |
2668 | 0; \ | |
2669 | }) | |
2670 | #endif | |
2671 | ||
2672 | #if defined(VERBOSE_DEBUG) | |
2673 | #define netdev_vdbg netdev_dbg | |
2674 | #else | |
2675 | ||
2676 | #define netdev_vdbg(dev, format, args...) \ | |
2677 | ({ \ | |
2678 | if (0) \ | |
2679 | netdev_printk(KERN_DEBUG, dev, format, ##args); \ | |
2680 | 0; \ | |
2681 | }) | |
2682 | #endif | |
2683 | ||
2684 | /* | |
2685 | * netdev_WARN() acts like dev_printk(), but with the key difference | |
2686 | * of using a WARN/WARN_ON to get the message out, including the | |
2687 | * file/line information and a backtrace. | |
2688 | */ | |
2689 | #define netdev_WARN(dev, format, args...) \ | |
2690 | WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args); | |
2691 | ||
b3d95c5c JP |
2692 | /* netif printk helpers, similar to netdev_printk */ |
2693 | ||
2694 | #define netif_printk(priv, type, level, dev, fmt, args...) \ | |
2695 | do { \ | |
2696 | if (netif_msg_##type(priv)) \ | |
2697 | netdev_printk(level, (dev), fmt, ##args); \ | |
2698 | } while (0) | |
2699 | ||
f45f4321 JP |
2700 | #define netif_level(level, priv, type, dev, fmt, args...) \ |
2701 | do { \ | |
2702 | if (netif_msg_##type(priv)) \ | |
2703 | netdev_##level(dev, fmt, ##args); \ | |
2704 | } while (0) | |
2705 | ||
b3d95c5c | 2706 | #define netif_emerg(priv, type, dev, fmt, args...) \ |
f45f4321 | 2707 | netif_level(emerg, priv, type, dev, fmt, ##args) |
b3d95c5c | 2708 | #define netif_alert(priv, type, dev, fmt, args...) \ |
f45f4321 | 2709 | netif_level(alert, priv, type, dev, fmt, ##args) |
b3d95c5c | 2710 | #define netif_crit(priv, type, dev, fmt, args...) \ |
f45f4321 | 2711 | netif_level(crit, priv, type, dev, fmt, ##args) |
b3d95c5c | 2712 | #define netif_err(priv, type, dev, fmt, args...) \ |
f45f4321 | 2713 | netif_level(err, priv, type, dev, fmt, ##args) |
b3d95c5c | 2714 | #define netif_warn(priv, type, dev, fmt, args...) \ |
f45f4321 | 2715 | netif_level(warn, priv, type, dev, fmt, ##args) |
b3d95c5c | 2716 | #define netif_notice(priv, type, dev, fmt, args...) \ |
f45f4321 | 2717 | netif_level(notice, priv, type, dev, fmt, ##args) |
b3d95c5c | 2718 | #define netif_info(priv, type, dev, fmt, args...) \ |
f45f4321 | 2719 | netif_level(info, priv, type, dev, fmt, ##args) |
b3d95c5c JP |
2720 | |
2721 | #if defined(DEBUG) | |
2722 | #define netif_dbg(priv, type, dev, format, args...) \ | |
2723 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args) | |
2724 | #elif defined(CONFIG_DYNAMIC_DEBUG) | |
2725 | #define netif_dbg(priv, type, netdev, format, args...) \ | |
2726 | do { \ | |
2727 | if (netif_msg_##type(priv)) \ | |
2728 | dynamic_dev_dbg((netdev)->dev.parent, \ | |
2729 | "%s: " format, \ | |
2730 | netdev_name(netdev), ##args); \ | |
2731 | } while (0) | |
2732 | #else | |
2733 | #define netif_dbg(priv, type, dev, format, args...) \ | |
2734 | ({ \ | |
2735 | if (0) \ | |
2736 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ | |
2737 | 0; \ | |
2738 | }) | |
2739 | #endif | |
2740 | ||
2741 | #if defined(VERBOSE_DEBUG) | |
bcfcc450 | 2742 | #define netif_vdbg netif_dbg |
b3d95c5c JP |
2743 | #else |
2744 | #define netif_vdbg(priv, type, dev, format, args...) \ | |
2745 | ({ \ | |
2746 | if (0) \ | |
a4ed89cb | 2747 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
b3d95c5c JP |
2748 | 0; \ |
2749 | }) | |
2750 | #endif | |
571ba423 | 2751 | |
1da177e4 LT |
2752 | #endif /* __KERNEL__ */ |
2753 | ||
385a154c | 2754 | #endif /* _LINUX_NETDEVICE_H */ |