?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
crypto: qat - Enforce valid numa configuration
[linux-2.6/btrfs-unstable.git] / net / bridge / br_private.h
blob4d783d071305a4d7aa683aaa74b57088db6142a8
1 /*
2 * Linux ethernet bridge
3 *
4 * Authors:
5 * Lennert Buytenhek <buytenh@gnu.org>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 */
12
13 #ifndef _BR_PRIVATE_H
14 #define _BR_PRIVATE_H
15
16 #include <linux/netdevice.h>
17 #include <linux/if_bridge.h>
18 #include <linux/netpoll.h>
19 #include <linux/u64_stats_sync.h>
20 #include <net/route.h>
21 #include <linux/if_vlan.h>
22
23 #define BR_HASH_BITS 8
24 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
25
26 #define BR_HOLD_TIME (1*HZ)
27
28 #define BR_PORT_BITS 10
29 #define BR_MAX_PORTS (1<<BR_PORT_BITS)
30 #define BR_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
31
32 #define BR_VERSION "2.3"
33
34 /* Control of forwarding link local multicast */
35 #define BR_GROUPFWD_DEFAULT 0
36 /* Don't allow forwarding control protocols like STP and LLDP */
37 #define BR_GROUPFWD_RESTRICTED 0x4007u
38 /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */
39 #define BR_GROUPFWD_8021AD 0xB801u
40
41 /* Path to usermode spanning tree program */
42 #define BR_STP_PROG "/sbin/bridge-stp"
43
44 typedef struct bridge_id bridge_id;
45 typedef struct mac_addr mac_addr;
46 typedef __u16 port_id;
47
48 struct bridge_id
49 {
50 unsigned char prio[2];
51 unsigned char addr[ETH_ALEN];
52 };
53
54 struct mac_addr
55 {
56 unsigned char addr[ETH_ALEN];
57 };
58
59 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
60 /* our own querier */
61 struct bridge_mcast_own_query {
62 struct timer_list timer;
63 u32 startup_sent;
64 };
65
66 /* other querier */
67 struct bridge_mcast_other_query {
68 struct timer_list timer;
69 unsigned long delay_time;
70 };
71
72 /* selected querier */
73 struct bridge_mcast_querier {
74 struct br_ip addr;
75 struct net_bridge_port __rcu *port;
76 };
77 #endif
78
79 struct net_port_vlans {
80 u16 port_idx;
81 u16 pvid;
82 union {
83 struct net_bridge_port *port;
84 struct net_bridge *br;
85 } parent;
86 struct rcu_head rcu;
87 unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN];
88 unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN];
89 u16 num_vlans;
90 };
91
92 struct net_bridge_fdb_entry
93 {
94 struct hlist_node hlist;
95 struct net_bridge_port *dst;
96
97 struct rcu_head rcu;
98 unsigned long updated;
99 unsigned long used;
100 mac_addr addr;
101 unsigned char is_local;
102 unsigned char is_static;
103 unsigned char added_by_user;
104 __u16 vlan_id;
105 };
106
107 struct net_bridge_port_group {
108 struct net_bridge_port *port;
109 struct net_bridge_port_group __rcu *next;
110 struct hlist_node mglist;
111 struct rcu_head rcu;
112 struct timer_list timer;
113 struct br_ip addr;
114 unsigned char state;
115 };
116
117 struct net_bridge_mdb_entry
118 {
119 struct hlist_node hlist[2];
120 struct net_bridge *br;
121 struct net_bridge_port_group __rcu *ports;
122 struct rcu_head rcu;
123 struct timer_list timer;
124 struct br_ip addr;
125 bool mglist;
126 };
127
128 struct net_bridge_mdb_htable
129 {
130 struct hlist_head *mhash;
131 struct rcu_head rcu;
132 struct net_bridge_mdb_htable *old;
133 u32 size;
134 u32 max;
135 u32 secret;
136 u32 ver;
137 };
138
139 struct net_bridge_port
140 {
141 struct net_bridge *br;
142 struct net_device *dev;
143 struct list_head list;
144
145 /* STP */
146 u8 priority;
147 u8 state;
148 u16 port_no;
149 unsigned char topology_change_ack;
150 unsigned char config_pending;
151 port_id port_id;
152 port_id designated_port;
153 bridge_id designated_root;
154 bridge_id designated_bridge;
155 u32 path_cost;
156 u32 designated_cost;
157 unsigned long designated_age;
158
159 struct timer_list forward_delay_timer;
160 struct timer_list hold_timer;
161 struct timer_list message_age_timer;
162 struct kobject kobj;
163 struct rcu_head rcu;
164
165 unsigned long flags;
166 #define BR_HAIRPIN_MODE 0x00000001
167 #define BR_BPDU_GUARD 0x00000002
168 #define BR_ROOT_BLOCK 0x00000004
169 #define BR_MULTICAST_FAST_LEAVE 0x00000008
170 #define BR_ADMIN_COST 0x00000010
171 #define BR_LEARNING 0x00000020
172 #define BR_FLOOD 0x00000040
173 #define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING)
174 #define BR_PROMISC 0x00000080
175
176 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
177 struct bridge_mcast_own_query ip4_own_query;
178 #if IS_ENABLED(CONFIG_IPV6)
179 struct bridge_mcast_own_query ip6_own_query;
180 #endif /* IS_ENABLED(CONFIG_IPV6) */
181 unsigned char multicast_router;
182 struct timer_list multicast_router_timer;
183 struct hlist_head mglist;
184 struct hlist_node rlist;
185 #endif
186
187 #ifdef CONFIG_SYSFS
188 char sysfs_name[IFNAMSIZ];
189 #endif
190
191 #ifdef CONFIG_NET_POLL_CONTROLLER
192 struct netpoll *np;
193 #endif
194 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
195 struct net_port_vlans __rcu *vlan_info;
196 #endif
197 };
198
199 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
200 #define br_promisc_port(p) ((p)->flags & BR_PROMISC)
201
202 #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
203
204 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
205 {
206 return rcu_dereference(dev->rx_handler_data);
207 }
208
209 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
210 {
211 return br_port_exists(dev) ?
212 rtnl_dereference(dev->rx_handler_data) : NULL;
213 }
214
215 struct net_bridge
216 {
217 spinlock_t lock;
218 struct list_head port_list;
219 struct net_device *dev;
220
221 struct pcpu_sw_netstats __percpu *stats;
222 spinlock_t hash_lock;
223 struct hlist_head hash[BR_HASH_SIZE];
224 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
225 struct rtable fake_rtable;
226 bool nf_call_iptables;
227 bool nf_call_ip6tables;
228 bool nf_call_arptables;
229 #endif
230 u16 group_fwd_mask;
231 u16 group_fwd_mask_required;
232
233 /* STP */
234 bridge_id designated_root;
235 bridge_id bridge_id;
236 u32 root_path_cost;
237 unsigned long max_age;
238 unsigned long hello_time;
239 unsigned long forward_delay;
240 unsigned long bridge_max_age;
241 unsigned long ageing_time;
242 unsigned long bridge_hello_time;
243 unsigned long bridge_forward_delay;
244
245 u8 group_addr[ETH_ALEN];
246 bool group_addr_set;
247 u16 root_port;
248
249 enum {
250 BR_NO_STP, /* no spanning tree */
251 BR_KERNEL_STP, /* old STP in kernel */
252 BR_USER_STP, /* new RSTP in userspace */
253 } stp_enabled;
254
255 unsigned char topology_change;
256 unsigned char topology_change_detected;
257
258 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
259 unsigned char multicast_router;
260
261 u8 multicast_disabled:1;
262 u8 multicast_querier:1;
263 u8 multicast_query_use_ifaddr:1;
264
265 u32 hash_elasticity;
266 u32 hash_max;
267
268 u32 multicast_last_member_count;
269 u32 multicast_startup_query_count;
270
271 unsigned long multicast_last_member_interval;
272 unsigned long multicast_membership_interval;
273 unsigned long multicast_querier_interval;
274 unsigned long multicast_query_interval;
275 unsigned long multicast_query_response_interval;
276 unsigned long multicast_startup_query_interval;
277
278 spinlock_t multicast_lock;
279 struct net_bridge_mdb_htable __rcu *mdb;
280 struct hlist_head router_list;
281
282 struct timer_list multicast_router_timer;
283 struct bridge_mcast_other_query ip4_other_query;
284 struct bridge_mcast_own_query ip4_own_query;
285 struct bridge_mcast_querier ip4_querier;
286 #if IS_ENABLED(CONFIG_IPV6)
287 struct bridge_mcast_other_query ip6_other_query;
288 struct bridge_mcast_own_query ip6_own_query;
289 struct bridge_mcast_querier ip6_querier;
290 #endif /* IS_ENABLED(CONFIG_IPV6) */
291 #endif
292
293 struct timer_list hello_timer;
294 struct timer_list tcn_timer;
295 struct timer_list topology_change_timer;
296 struct timer_list gc_timer;
297 struct kobject *ifobj;
298 u32 auto_cnt;
299 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
300 u8 vlan_enabled;
301 __be16 vlan_proto;
302 u16 default_pvid;
303 struct net_port_vlans __rcu *vlan_info;
304 #endif
305 };
306
307 struct br_input_skb_cb {
308 struct net_device *brdev;
309
310 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
311 int igmp;
312 int mrouters_only;
313 #endif
314
315 u16 frag_max_size;
316
317 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
318 bool vlan_filtered;
319 #endif
320 };
321
322 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
323
324 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
325 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
326 #else
327 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
328 #endif
329
330 #define br_printk(level, br, format, args...) \
331 printk(level "%s: " format, (br)->dev->name, ##args)
332
333 #define br_err(__br, format, args...) \
334 br_printk(KERN_ERR, __br, format, ##args)
335 #define br_warn(__br, format, args...) \
336 br_printk(KERN_WARNING, __br, format, ##args)
337 #define br_notice(__br, format, args...) \
338 br_printk(KERN_NOTICE, __br, format, ##args)
339 #define br_info(__br, format, args...) \
340 br_printk(KERN_INFO, __br, format, ##args)
341
342 #define br_debug(br, format, args...) \
343 pr_debug("%s: " format, (br)->dev->name, ##args)
344
345 /* called under bridge lock */
346 static inline int br_is_root_bridge(const struct net_bridge *br)
347 {
348 return !memcmp(&br->bridge_id, &br->designated_root, 8);
349 }
350
351 /* br_device.c */
352 void br_dev_setup(struct net_device *dev);
353 void br_dev_delete(struct net_device *dev, struct list_head *list);
354 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
355 #ifdef CONFIG_NET_POLL_CONTROLLER
356 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
357 struct sk_buff *skb)
358 {
359 struct netpoll *np = p->np;
360
361 if (np)
362 netpoll_send_skb(np, skb);
363 }
364
365 int br_netpoll_enable(struct net_bridge_port *p);
366 void br_netpoll_disable(struct net_bridge_port *p);
367 #else
368 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
369 struct sk_buff *skb)
370 {
371 }
372
373 static inline int br_netpoll_enable(struct net_bridge_port *p)
374 {
375 return 0;
376 }
377
378 static inline void br_netpoll_disable(struct net_bridge_port *p)
379 {
380 }
381 #endif
382
383 /* br_fdb.c */
384 int br_fdb_init(void);
385 void br_fdb_fini(void);
386 void br_fdb_flush(struct net_bridge *br);
387 void br_fdb_find_delete_local(struct net_bridge *br,
388 const struct net_bridge_port *p,
389 const unsigned char *addr, u16 vid);
390 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
391 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
392 void br_fdb_cleanup(unsigned long arg);
393 void br_fdb_delete_by_port(struct net_bridge *br,
394 const struct net_bridge_port *p, int do_all);
395 struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
396 const unsigned char *addr, __u16 vid);
397 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
398 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
399 unsigned long off);
400 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
401 const unsigned char *addr, u16 vid);
402 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
403 const unsigned char *addr, u16 vid, bool added_by_user);
404
405 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
406 struct net_device *dev, const unsigned char *addr);
407 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
408 const unsigned char *addr, u16 nlh_flags);
409 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
410 struct net_device *dev, struct net_device *fdev, int idx);
411 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
412 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
413
414 /* br_forward.c */
415 void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb);
416 int br_dev_queue_push_xmit(struct sk_buff *skb);
417 void br_forward(const struct net_bridge_port *to,
418 struct sk_buff *skb, struct sk_buff *skb0);
419 int br_forward_finish(struct sk_buff *skb);
420 void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast);
421 void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
422 struct sk_buff *skb2, bool unicast);
423
424 /* br_if.c */
425 void br_port_carrier_check(struct net_bridge_port *p);
426 int br_add_bridge(struct net *net, const char *name);
427 int br_del_bridge(struct net *net, const char *name);
428 int br_add_if(struct net_bridge *br, struct net_device *dev);
429 int br_del_if(struct net_bridge *br, struct net_device *dev);
430 int br_min_mtu(const struct net_bridge *br);
431 netdev_features_t br_features_recompute(struct net_bridge *br,
432 netdev_features_t features);
433 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
434 void br_manage_promisc(struct net_bridge *br);
435
436 /* br_input.c */
437 int br_handle_frame_finish(struct sk_buff *skb);
438 rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
439
440 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
441 {
442 return rcu_dereference(dev->rx_handler) == br_handle_frame;
443 }
444
445 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
446 {
447 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
448 }
449
450 /* br_ioctl.c */
451 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
452 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
453 void __user *arg);
454
455 /* br_multicast.c */
456 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
457 extern unsigned int br_mdb_rehash_seq;
458 int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
459 struct sk_buff *skb, u16 vid);
460 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
461 struct sk_buff *skb, u16 vid);
462 void br_multicast_add_port(struct net_bridge_port *port);
463 void br_multicast_del_port(struct net_bridge_port *port);
464 void br_multicast_enable_port(struct net_bridge_port *port);
465 void br_multicast_disable_port(struct net_bridge_port *port);
466 void br_multicast_init(struct net_bridge *br);
467 void br_multicast_open(struct net_bridge *br);
468 void br_multicast_stop(struct net_bridge *br);
469 void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
470 struct sk_buff *skb);
471 void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
472 struct sk_buff *skb, struct sk_buff *skb2);
473 int br_multicast_set_router(struct net_bridge *br, unsigned long val);
474 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
475 int br_multicast_toggle(struct net_bridge *br, unsigned long val);
476 int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
477 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
478 struct net_bridge_mdb_entry *
479 br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
480 struct net_bridge_mdb_entry *
481 br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port,
482 struct br_ip *group);
483 void br_multicast_free_pg(struct rcu_head *head);
484 struct net_bridge_port_group *
485 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
486 struct net_bridge_port_group __rcu *next,
487 unsigned char state);
488 void br_mdb_init(void);
489 void br_mdb_uninit(void);
490 void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
491 struct br_ip *group, int type);
492
493 #define mlock_dereference(X, br) \
494 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
495
496 static inline bool br_multicast_is_router(struct net_bridge *br)
497 {
498 return br->multicast_router == 2 ||
499 (br->multicast_router == 1 &&
500 timer_pending(&br->multicast_router_timer));
501 }
502
503 static inline bool
504 __br_multicast_querier_exists(struct net_bridge *br,
505 struct bridge_mcast_other_query *querier)
506 {
507 return time_is_before_jiffies(querier->delay_time) &&
508 (br->multicast_querier || timer_pending(&querier->timer));
509 }
510
511 static inline bool br_multicast_querier_exists(struct net_bridge *br,
512 struct ethhdr *eth)
513 {
514 switch (eth->h_proto) {
515 case (htons(ETH_P_IP)):
516 return __br_multicast_querier_exists(br, &br->ip4_other_query);
517 #if IS_ENABLED(CONFIG_IPV6)
518 case (htons(ETH_P_IPV6)):
519 return __br_multicast_querier_exists(br, &br->ip6_other_query);
520 #endif
521 default:
522 return false;
523 }
524 }
525 #else
526 static inline int br_multicast_rcv(struct net_bridge *br,
527 struct net_bridge_port *port,
528 struct sk_buff *skb,
529 u16 vid)
530 {
531 return 0;
532 }
533
534 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
535 struct sk_buff *skb, u16 vid)
536 {
537 return NULL;
538 }
539
540 static inline void br_multicast_add_port(struct net_bridge_port *port)
541 {
542 }
543
544 static inline void br_multicast_del_port(struct net_bridge_port *port)
545 {
546 }
547
548 static inline void br_multicast_enable_port(struct net_bridge_port *port)
549 {
550 }
551
552 static inline void br_multicast_disable_port(struct net_bridge_port *port)
553 {
554 }
555
556 static inline void br_multicast_init(struct net_bridge *br)
557 {
558 }
559
560 static inline void br_multicast_open(struct net_bridge *br)
561 {
562 }
563
564 static inline void br_multicast_stop(struct net_bridge *br)
565 {
566 }
567
568 static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
569 struct sk_buff *skb)
570 {
571 }
572
573 static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
574 struct sk_buff *skb,
575 struct sk_buff *skb2)
576 {
577 }
578 static inline bool br_multicast_is_router(struct net_bridge *br)
579 {
580 return 0;
581 }
582 static inline bool br_multicast_querier_exists(struct net_bridge *br,
583 struct ethhdr *eth)
584 {
585 return false;
586 }
587 static inline void br_mdb_init(void)
588 {
589 }
590 static inline void br_mdb_uninit(void)
591 {
592 }
593 #endif
594
595 /* br_vlan.c */
596 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
597 bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v,
598 struct sk_buff *skb, u16 *vid);
599 bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v,
600 const struct sk_buff *skb);
601 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
602 struct sk_buff *br_handle_vlan(struct net_bridge *br,
603 const struct net_port_vlans *v,
604 struct sk_buff *skb);
605 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
606 int br_vlan_delete(struct net_bridge *br, u16 vid);
607 void br_vlan_flush(struct net_bridge *br);
608 bool br_vlan_find(struct net_bridge *br, u16 vid);
609 void br_recalculate_fwd_mask(struct net_bridge *br);
610 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
611 int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
612 int br_vlan_init(struct net_bridge *br);
613 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
614 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
615 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
616 void nbp_vlan_flush(struct net_bridge_port *port);
617 bool nbp_vlan_find(struct net_bridge_port *port, u16 vid);
618 int nbp_vlan_init(struct net_bridge_port *port);
619
620 static inline struct net_port_vlans *br_get_vlan_info(
621 const struct net_bridge *br)
622 {
623 return rcu_dereference_rtnl(br->vlan_info);
624 }
625
626 static inline struct net_port_vlans *nbp_get_vlan_info(
627 const struct net_bridge_port *p)
628 {
629 return rcu_dereference_rtnl(p->vlan_info);
630 }
631
632 /* Since bridge now depends on 8021Q module, but the time bridge sees the
633 * skb, the vlan tag will always be present if the frame was tagged.
634 */
635 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
636 {
637 int err = 0;
638
639 if (vlan_tx_tag_present(skb))
640 *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK;
641 else {
642 *vid = 0;
643 err = -EINVAL;
644 }
645
646 return err;
647 }
648
649 static inline u16 br_get_pvid(const struct net_port_vlans *v)
650 {
651 if (!v)
652 return 0;
653
654 smp_rmb();
655 return v->pvid;
656 }
657
658 static inline int br_vlan_enabled(struct net_bridge *br)
659 {
660 return br->vlan_enabled;
661 }
662 #else
663 static inline bool br_allowed_ingress(struct net_bridge *br,
664 struct net_port_vlans *v,
665 struct sk_buff *skb,
666 u16 *vid)
667 {
668 return true;
669 }
670
671 static inline bool br_allowed_egress(struct net_bridge *br,
672 const struct net_port_vlans *v,
673 const struct sk_buff *skb)
674 {
675 return true;
676 }
677
678 static inline bool br_should_learn(struct net_bridge_port *p,
679 struct sk_buff *skb, u16 *vid)
680 {
681 return true;
682 }
683
684 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
685 const struct net_port_vlans *v,
686 struct sk_buff *skb)
687 {
688 return skb;
689 }
690
691 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
692 {
693 return -EOPNOTSUPP;
694 }
695
696 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
697 {
698 return -EOPNOTSUPP;
699 }
700
701 static inline void br_vlan_flush(struct net_bridge *br)
702 {
703 }
704
705 static inline bool br_vlan_find(struct net_bridge *br, u16 vid)
706 {
707 return false;
708 }
709
710 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
711 {
712 }
713
714 static inline int br_vlan_init(struct net_bridge *br)
715 {
716 return 0;
717 }
718
719 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
720 {
721 return -EOPNOTSUPP;
722 }
723
724 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
725 {
726 return -EOPNOTSUPP;
727 }
728
729 static inline void nbp_vlan_flush(struct net_bridge_port *port)
730 {
731 }
732
733 static inline struct net_port_vlans *br_get_vlan_info(
734 const struct net_bridge *br)
735 {
736 return NULL;
737 }
738 static inline struct net_port_vlans *nbp_get_vlan_info(
739 const struct net_bridge_port *p)
740 {
741 return NULL;
742 }
743
744 static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid)
745 {
746 return false;
747 }
748
749 static inline int nbp_vlan_init(struct net_bridge_port *port)
750 {
751 return 0;
752 }
753
754 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
755 {
756 return 0;
757 }
758 static inline u16 br_get_pvid(const struct net_port_vlans *v)
759 {
760 return 0;
761 }
762
763 static inline int br_vlan_enabled(struct net_bridge *br)
764 {
765 return 0;
766 }
767 #endif
768
769 /* br_netfilter.c */
770 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
771 int br_nf_core_init(void);
772 void br_nf_core_fini(void);
773 void br_netfilter_rtable_init(struct net_bridge *);
774 #else
775 static inline int br_nf_core_init(void) { return 0; }
776 static inline void br_nf_core_fini(void) {}
777 #define br_netfilter_rtable_init(x)
778 #endif
779
780 /* br_stp.c */
781 void br_log_state(const struct net_bridge_port *p);
782 void br_set_state(struct net_bridge_port *p, unsigned int state);
783 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
784 void br_init_port(struct net_bridge_port *p);
785 void br_become_designated_port(struct net_bridge_port *p);
786
787 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
788 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
789 int br_set_hello_time(struct net_bridge *br, unsigned long x);
790 int br_set_max_age(struct net_bridge *br, unsigned long x);
791
792
793 /* br_stp_if.c */
794 void br_stp_enable_bridge(struct net_bridge *br);
795 void br_stp_disable_bridge(struct net_bridge *br);
796 void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
797 void br_stp_enable_port(struct net_bridge_port *p);
798 void br_stp_disable_port(struct net_bridge_port *p);
799 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
800 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
801 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
802 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
803 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
804 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
805
806 /* br_stp_bpdu.c */
807 struct stp_proto;
808 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
809 struct net_device *dev);
810
811 /* br_stp_timer.c */
812 void br_stp_timer_init(struct net_bridge *br);
813 void br_stp_port_timer_init(struct net_bridge_port *p);
814 unsigned long br_timer_value(const struct timer_list *timer);
815
816 /* br.c */
817 #if IS_ENABLED(CONFIG_ATM_LANE)
818 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
819 #endif
820
821 /* br_netlink.c */
822 extern struct rtnl_link_ops br_link_ops;
823 int br_netlink_init(void);
824 void br_netlink_fini(void);
825 void br_ifinfo_notify(int event, struct net_bridge_port *port);
826 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg);
827 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg);
828 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
829 u32 filter_mask);
830
831 #ifdef CONFIG_SYSFS
832 /* br_sysfs_if.c */
833 extern const struct sysfs_ops brport_sysfs_ops;
834 int br_sysfs_addif(struct net_bridge_port *p);
835 int br_sysfs_renameif(struct net_bridge_port *p);
836
837 /* br_sysfs_br.c */
838 int br_sysfs_addbr(struct net_device *dev);
839 void br_sysfs_delbr(struct net_device *dev);
840
841 #else
842
843 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
844 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
845 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
846 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
847 #endif /* CONFIG_SYSFS */
848
849 #endif
(deprecated) Btrfs devel tree