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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
[mirror_ubuntu-eoan-kernel.git] / net / bridge / br_private.h
CommitLineData
1da177e4
LT		 1/*
2 * Linux ethernet bridge
3 *
4 * Authors:
5 * Lennert Buytenhek <buytenh@gnu.org>
6 *
1da177e4
LT		 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>
1da177e4 17#include <linux/if_bridge.h>
91d2c34a 18#include <linux/netpoll.h>
406818ff 19#include <linux/u64_stats_sync.h>
4adf0af6 20#include <net/route.h>
243a2e63 21#include <linux/if_vlan.h>
1da177e4
LT		 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)
243a2e63 30#define BR_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
1da177e4 31
9cde0708
SH		 32#define BR_VERSION "2.3"
33
515853cc 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
9cde0708
SH		 39/* Path to usermode spanning tree program */
40#define BR_STP_PROG "/sbin/bridge-stp"
8cbb512e 41
1da177e4
LT		 42typedef struct bridge_id bridge_id;
43typedef struct mac_addr mac_addr;
44typedef __u16 port_id;
45
46struct bridge_id
47{
48 unsigned char prio[2];
49 unsigned char addr[6];
50};
51
52struct mac_addr
53{
54 unsigned char addr[6];
55};
56
8ef2a9a5
YH		 57struct br_ip
58{
59 union {
60 __be32 ip4;
dfd56b8b 61#if IS_ENABLED(CONFIG_IPV6)
08b202b6
YH		 62 struct in6_addr ip6;
63#endif
8ef2a9a5
YH		 64 } u;
65 __be16 proto;
b0e9a30d 66 __u16 vid;
8ef2a9a5
YH		 67};
68
cc0fdd80
LL		 69#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
70/* our own querier */
71struct bridge_mcast_query {
72 struct timer_list timer;
73 u32 startup_sent;
74};
75
76/* other querier */
77struct bridge_mcast_querier {
78 struct timer_list timer;
79 unsigned long delay_time;
80};
81#endif
82
243a2e63
VY		 83struct net_port_vlans {
84 u16 port_idx;
78851988 85 u16 pvid;
243a2e63
VY		 86 union {
87 struct net_bridge_port *port;
88 struct net_bridge *br;
89 } parent;
90 struct rcu_head rcu;
91 unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN];
35e03f3a 92 unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN];
6cbdceeb 93 u16 num_vlans;
243a2e63
VY		 94};
95
1da177e4
LT		 96struct net_bridge_fdb_entry
97{
98 struct hlist_node hlist;
99 struct net_bridge_port *dst;
100
101 struct rcu_head rcu;
7cd8861a 102 unsigned long updated;
103 unsigned long used;
1da177e4
LT		 104 mac_addr addr;
105 unsigned char is_local;
106 unsigned char is_static;
2ba071ec 107 __u16 vlan_id;
1da177e4
LT		 108};
109
eb1d1641
HX		 110struct net_bridge_port_group {
111 struct net_bridge_port *port;
e8051688 112 struct net_bridge_port_group __rcu *next;
eb1d1641
HX		 113 struct hlist_node mglist;
114 struct rcu_head rcu;
115 struct timer_list timer;
8ef2a9a5 116 struct br_ip addr;
ccb1c31a 117 unsigned char state;
eb1d1641
HX		 118};
119
120struct net_bridge_mdb_entry
121{
122 struct hlist_node hlist[2];
eb1d1641 123 struct net_bridge *br;
e8051688 124 struct net_bridge_port_group __rcu *ports;
eb1d1641
HX		 125 struct rcu_head rcu;
126 struct timer_list timer;
8ef2a9a5 127 struct br_ip addr;
8a870178 128 bool mglist;
eb1d1641
HX		 129};
130
131struct net_bridge_mdb_htable
132{
133 struct hlist_head *mhash;
134 struct rcu_head rcu;
135 struct net_bridge_mdb_htable *old;
136 u32 size;
137 u32 max;
138 u32 secret;
139 u32 ver;
140};
141
1da177e4
LT		 142struct net_bridge_port
143{
144 struct net_bridge *br;
145 struct net_device *dev;
146 struct list_head list;
147
148 /* STP */
149 u8 priority;
150 u8 state;
151 u16 port_no;
152 unsigned char topology_change_ack;
153 unsigned char config_pending;
154 port_id port_id;
155 port_id designated_port;
156 bridge_id designated_root;
157 bridge_id designated_bridge;
158 u32 path_cost;
159 u32 designated_cost;
0c03150e 160 unsigned long designated_age;
1da177e4
LT		 161
162 struct timer_list forward_delay_timer;
163 struct timer_list hold_timer;
164 struct timer_list message_age_timer;
165 struct kobject kobj;
166 struct rcu_head rcu;
3982d3d2
FA		 167
168 unsigned long flags;
169#define BR_HAIRPIN_MODE 0x00000001
a2e01a65 170#define BR_BPDU_GUARD 0x00000002
1007dd1a 171#define BR_ROOT_BLOCK 0x00000004
c2d3babf 172#define BR_MULTICAST_FAST_LEAVE 0x00000008
8f3359bd 173#define BR_ADMIN_COST 0x00000010
9ba18891 174#define BR_LEARNING 0x00000020
867a5943 175#define BR_FLOOD 0x00000040
eb1d1641
HX		 176
177#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
cc0fdd80
LL		 178 struct bridge_mcast_query ip4_query;
179#if IS_ENABLED(CONFIG_IPV6)
180 struct bridge_mcast_query ip6_query;
181#endif /* IS_ENABLED(CONFIG_IPV6) */
eb1d1641
HX		 182 unsigned char multicast_router;
183 struct timer_list multicast_router_timer;
eb1d1641
HX		 184 struct hlist_head mglist;
185 struct hlist_node rlist;
186#endif
e0f43752
SA		 187
188#ifdef CONFIG_SYSFS
189 char sysfs_name[IFNAMSIZ];
190#endif
91d2c34a
HX		 191
192#ifdef CONFIG_NET_POLL_CONTROLLER
193 struct netpoll *np;
194#endif
243a2e63
VY		 195#ifdef CONFIG_BRIDGE_VLAN_FILTERING
196 struct net_port_vlans __rcu *vlan_info;
197#endif
1da177e4
LT		 198};
199
f350a0a8
JP		 200#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
201
b5ed54e9 202static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
203{
716ec052 204 return rcu_dereference(dev->rx_handler_data);
b5ed54e9 205}
206
1fb1754a 207static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
b5ed54e9 208{
ec1e5610
ED		 209 return br_port_exists(dev) ?
210 rtnl_dereference(dev->rx_handler_data) : NULL;
b5ed54e9 211}
212
0eae88f3 213struct br_cpu_netstats {
406818ff
ED		 214 u64 rx_packets;
215 u64 rx_bytes;
216 u64 tx_packets;
217 u64 tx_bytes;
218 struct u64_stats_sync syncp;
0eae88f3
ED		 219};
220
1da177e4
LT		 221struct net_bridge
222{
223 spinlock_t lock;
224 struct list_head port_list;
225 struct net_device *dev;
14bb4789 226
0eae88f3 227 struct br_cpu_netstats __percpu *stats;
1da177e4
LT		 228 spinlock_t hash_lock;
229 struct hlist_head hash[BR_HASH_SIZE];
4adf0af6
SW		 230#ifdef CONFIG_BRIDGE_NETFILTER
231 struct rtable fake_rtable;
4df53d8b
PM		 232 bool nf_call_iptables;
233 bool nf_call_ip6tables;
234 bool nf_call_arptables;
4adf0af6 235#endif
515853cc 236 u16 group_fwd_mask;
237
1da177e4
LT		 238 /* STP */
239 bridge_id designated_root;
240 bridge_id bridge_id;
241 u32 root_path_cost;
242 unsigned long max_age;
243 unsigned long hello_time;
244 unsigned long forward_delay;
245 unsigned long bridge_max_age;
246 unsigned long ageing_time;
247 unsigned long bridge_hello_time;
248 unsigned long bridge_forward_delay;
249
fda93d92 250 u8 group_addr[ETH_ALEN];
1da177e4 251 u16 root_port;
9cde0708
SH		 252
253 enum {
254 BR_NO_STP, /* no spanning tree */
255 BR_KERNEL_STP, /* old STP in kernel */
256 BR_USER_STP, /* new RSTP in userspace */
257 } stp_enabled;
258
1da177e4
LT		 259 unsigned char topology_change;
260 unsigned char topology_change_detected;
261
eb1d1641
HX		 262#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
263 unsigned char multicast_router;
264
265 u8 multicast_disabled:1;
c5c23260 266 u8 multicast_querier:1;
1c8ad5bf 267 u8 multicast_query_use_ifaddr:1;
eb1d1641
HX		 268
269 u32 hash_elasticity;
270 u32 hash_max;
271
272 u32 multicast_last_member_count;
eb1d1641
HX		 273 u32 multicast_startup_query_count;
274
275 unsigned long multicast_last_member_interval;
276 unsigned long multicast_membership_interval;
277 unsigned long multicast_querier_interval;
278 unsigned long multicast_query_interval;
279 unsigned long multicast_query_response_interval;
280 unsigned long multicast_startup_query_interval;
281
282 spinlock_t multicast_lock;
e8051688 283 struct net_bridge_mdb_htable __rcu *mdb;
eb1d1641 284 struct hlist_head router_list;
eb1d1641
HX		 285
286 struct timer_list multicast_router_timer;
cc0fdd80
LL		 287 struct bridge_mcast_querier ip4_querier;
288 struct bridge_mcast_query ip4_query;
289#if IS_ENABLED(CONFIG_IPV6)
290 struct bridge_mcast_querier ip6_querier;
291 struct bridge_mcast_query ip6_query;
292#endif /* IS_ENABLED(CONFIG_IPV6) */
eb1d1641
HX		 293#endif
294
1da177e4
LT		 295 struct timer_list hello_timer;
296 struct timer_list tcn_timer;
297 struct timer_list topology_change_timer;
298 struct timer_list gc_timer;
43b98c4a 299 struct kobject *ifobj;
243a2e63
VY		 300#ifdef CONFIG_BRIDGE_VLAN_FILTERING
301 u8 vlan_enabled;
302 struct net_port_vlans __rcu *vlan_info;
303#endif
1da177e4
LT		 304};
305
68b7c895
HX		 306struct br_input_skb_cb {
307 struct net_device *brdev;
32dec5dd 308#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
eb1d1641
HX		 309 int igmp;
310 int mrouters_only;
32dec5dd 311#endif
68b7c895
HX		 312};
313
314#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
315
32dec5dd
YH		 316#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
317# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
318#else
319# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
320#endif
321
28a16c97 322#define br_printk(level, br, format, args...) \
323 printk(level "%s: " format, (br)->dev->name, ##args)
324
325#define br_err(__br, format, args...) \
326 br_printk(KERN_ERR, __br, format, ##args)
327#define br_warn(__br, format, args...) \
328 br_printk(KERN_WARNING, __br, format, ##args)
329#define br_notice(__br, format, args...) \
330 br_printk(KERN_NOTICE, __br, format, ##args)
331#define br_info(__br, format, args...) \
332 br_printk(KERN_INFO, __br, format, ##args)
333
334#define br_debug(br, format, args...) \
335 pr_debug("%s: " format, (br)->dev->name, ##args)
336
1da177e4 337extern struct notifier_block br_device_notifier;
1da177e4
LT		 338
339/* called under bridge lock */
340static inline int br_is_root_bridge(const struct net_bridge *br)
341{
342 return !memcmp(&br->bridge_id, &br->designated_root, 8);
343}
344
1da177e4 345/* br_device.c */
348662a1
JP		 346void br_dev_setup(struct net_device *dev);
347void br_dev_delete(struct net_device *dev, struct list_head *list);
348netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
cfb478da 349#ifdef CONFIG_NET_POLL_CONTROLLER
91d2c34a
HX		 350static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
351 struct sk_buff *skb)
352{
353 struct netpoll *np = p->np;
354
355 if (np)
356 netpoll_send_skb(np, skb);
357}
358
348662a1
JP		 359int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp);
360void br_netpoll_disable(struct net_bridge_port *p);
cfb478da 361#else
9f70b0fc 362static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
91d2c34a
HX		 363 struct sk_buff *skb)
364{
365}
cfb478da 366
47be03a2 367static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp)
91d2c34a
HX		 368{
369 return 0;
370}
371
372static inline void br_netpoll_disable(struct net_bridge_port *p)
373{
374}
cfb478da 375#endif
1da177e4
LT		 376
377/* br_fdb.c */
348662a1
JP		 378int br_fdb_init(void);
379void br_fdb_fini(void);
380void br_fdb_flush(struct net_bridge *br);
381void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
382void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
383void br_fdb_cleanup(unsigned long arg);
384void br_fdb_delete_by_port(struct net_bridge *br,
385 const struct net_bridge_port *p, int do_all);
386struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
387 const unsigned char *addr, __u16 vid);
388int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
389int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
390 unsigned long off);
391int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
392 const unsigned char *addr, u16 vid);
393void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
394 const unsigned char *addr, u16 vid);
395int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vid);
396
397int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
398 struct net_device *dev, const unsigned char *addr);
399int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
400 const unsigned char *addr, u16 nlh_flags);
401int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
402 struct net_device *dev, int idx);
1da177e4
LT		 403
404/* br_forward.c */
348662a1
JP		 405void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb);
406int br_dev_queue_push_xmit(struct sk_buff *skb);
407void br_forward(const struct net_bridge_port *to,
7f7708f0 408 struct sk_buff *skb, struct sk_buff *skb0);
348662a1
JP		 409int br_forward_finish(struct sk_buff *skb);
410void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast);
411void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
412 struct sk_buff *skb2, bool unicast);
1da177e4
LT		 413
414/* br_if.c */
348662a1
JP		 415void br_port_carrier_check(struct net_bridge_port *p);
416int br_add_bridge(struct net *net, const char *name);
417int br_del_bridge(struct net *net, const char *name);
418void br_net_exit(struct net *net);
419int br_add_if(struct net_bridge *br, struct net_device *dev);
420int br_del_if(struct net_bridge *br, struct net_device *dev);
421int br_min_mtu(const struct net_bridge *br);
422netdev_features_t br_features_recompute(struct net_bridge *br,
423 netdev_features_t features);
1da177e4
LT		 424
425/* br_input.c */
348662a1
JP		 426int br_handle_frame_finish(struct sk_buff *skb);
427rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
1da177e4 428
859828c0
JP		 429static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
430{
431 return rcu_dereference(dev->rx_handler) == br_handle_frame;
432}
433
434static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
435{
436 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
437}
438
1da177e4 439/* br_ioctl.c */
348662a1
JP		 440int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
441int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
442 void __user *arg);
1da177e4 443
eb1d1641
HX		 444/* br_multicast.c */
445#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
2ce297fc 446extern unsigned int br_mdb_rehash_seq;
348662a1 447int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
394efd19 448 struct sk_buff *skb, u16 vid);
348662a1
JP		 449struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
450 struct sk_buff *skb, u16 vid);
451void br_multicast_add_port(struct net_bridge_port *port);
452void br_multicast_del_port(struct net_bridge_port *port);
453void br_multicast_enable_port(struct net_bridge_port *port);
454void br_multicast_disable_port(struct net_bridge_port *port);
455void br_multicast_init(struct net_bridge *br);
456void br_multicast_open(struct net_bridge *br);
457void br_multicast_stop(struct net_bridge *br);
458void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
459 struct sk_buff *skb);
460void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
461 struct sk_buff *skb, struct sk_buff *skb2);
462int br_multicast_set_router(struct net_bridge *br, unsigned long val);
463int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
464int br_multicast_toggle(struct net_bridge *br, unsigned long val);
465int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
466int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
467struct net_bridge_mdb_entry *
468br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
469struct net_bridge_mdb_entry *
470br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port,
471 struct br_ip *group);
472void br_multicast_free_pg(struct rcu_head *head);
473struct net_bridge_port_group *
474br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
475 struct net_bridge_port_group __rcu *next,
476 unsigned char state);
477void br_mdb_init(void);
478void br_mdb_uninit(void);
479void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
480 struct br_ip *group, int type);
85b35269 481
cfd56754
CW		 482#define mlock_dereference(X, br) \
483 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
484
85b35269
SS		 485static inline bool br_multicast_is_router(struct net_bridge *br)
486{
487 return br->multicast_router == 2 ||
488 (br->multicast_router == 1 &&
489 timer_pending(&br->multicast_router_timer));
490}
b00589af 491
cc0fdd80
LL		 492static inline bool
493__br_multicast_querier_exists(struct net_bridge *br,
494 struct bridge_mcast_querier *querier)
b00589af 495{
cc0fdd80
LL		 496 return time_is_before_jiffies(querier->delay_time) &&
497 (br->multicast_querier || timer_pending(&querier->timer));
498}
499
500static inline bool br_multicast_querier_exists(struct net_bridge *br,
501 struct ethhdr *eth)
502{
503 switch (eth->h_proto) {
504 case (htons(ETH_P_IP)):
505 return __br_multicast_querier_exists(br, &br->ip4_querier);
506#if IS_ENABLED(CONFIG_IPV6)
507 case (htons(ETH_P_IPV6)):
508 return __br_multicast_querier_exists(br, &br->ip6_querier);
509#endif
510 default:
511 return false;
512 }
b00589af 513}
eb1d1641
HX		 514#else
515static inline int br_multicast_rcv(struct net_bridge *br,
516 struct net_bridge_port *port,
06499098
VY		 517 struct sk_buff *skb,
518 u16 vid)
eb1d1641
HX		 519{
520 return 0;
521}
522
523static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
fbca58a2 524 struct sk_buff *skb, u16 vid)
eb1d1641
HX		 525{
526 return NULL;
527}
528
529static inline void br_multicast_add_port(struct net_bridge_port *port)
530{
531}
532
533static inline void br_multicast_del_port(struct net_bridge_port *port)
534{
535}
536
537static inline void br_multicast_enable_port(struct net_bridge_port *port)
538{
539}
540
541static inline void br_multicast_disable_port(struct net_bridge_port *port)
542{
543}
544
545static inline void br_multicast_init(struct net_bridge *br)
546{
547}
548
549static inline void br_multicast_open(struct net_bridge *br)
550{
551}
552
553static inline void br_multicast_stop(struct net_bridge *br)
554{
555}
5cb5e947
HX		 556
557static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
558 struct sk_buff *skb)
559{
560}
561
562static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
563 struct sk_buff *skb,
564 struct sk_buff *skb2)
565{
566}
eb1d1641
HX		 567static inline bool br_multicast_is_router(struct net_bridge *br)
568{
85b35269 569 return 0;
eb1d1641 570}
cc0fdd80
LL		 571static inline bool br_multicast_querier_exists(struct net_bridge *br,
572 struct ethhdr *eth)
b00589af
LL		 573{
574 return false;
575}
fdb184d1
RR		 576static inline void br_mdb_init(void)
577{
578}
579static inline void br_mdb_uninit(void)
580{
581}
85b35269 582#endif
eb1d1641 583
243a2e63
VY		 584/* br_vlan.c */
585#ifdef CONFIG_BRIDGE_VLAN_FILTERING
348662a1
JP		 586bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v,
587 struct sk_buff *skb, u16 *vid);
588bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v,
589 const struct sk_buff *skb);
590struct sk_buff *br_handle_vlan(struct net_bridge *br,
591 const struct net_port_vlans *v,
592 struct sk_buff *skb);
593int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
594int br_vlan_delete(struct net_bridge *br, u16 vid);
595void br_vlan_flush(struct net_bridge *br);
596int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
597int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
598int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
599void nbp_vlan_flush(struct net_bridge_port *port);
600bool nbp_vlan_find(struct net_bridge_port *port, u16 vid);
a37b85c9
VY		 601
602static inline struct net_port_vlans *br_get_vlan_info(
603 const struct net_bridge *br)
604{
1690be63 605 return rcu_dereference_rtnl(br->vlan_info);
a37b85c9
VY		 606}
607
608static inline struct net_port_vlans *nbp_get_vlan_info(
609 const struct net_bridge_port *p)
610{
1690be63 611 return rcu_dereference_rtnl(p->vlan_info);
a37b85c9
VY		 612}
613
614/* Since bridge now depends on 8021Q module, but the time bridge sees the
615 * skb, the vlan tag will always be present if the frame was tagged.
616 */
617static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
618{
619 int err = 0;
620
621 if (vlan_tx_tag_present(skb))
622 *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK;
623 else {
624 *vid = 0;
625 err = -EINVAL;
626 }
627
628 return err;
629}
78851988
VY		 630
631static inline u16 br_get_pvid(const struct net_port_vlans *v)
632{
633 /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if
634 * vid wasn't set
635 */
636 smp_rmb();
d1c6c708 637 return v->pvid ?: VLAN_N_VID;
78851988
VY		 638}
639
243a2e63 640#else
a37b85c9
VY		 641static inline bool br_allowed_ingress(struct net_bridge *br,
642 struct net_port_vlans *v,
78851988
VY		 643 struct sk_buff *skb,
644 u16 *vid)
a37b85c9
VY		 645{
646 return true;
647}
648
85f46c6b
VY		 649static inline bool br_allowed_egress(struct net_bridge *br,
650 const struct net_port_vlans *v,
651 const struct sk_buff *skb)
652{
653 return true;
654}
655
78851988
VY		 656static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
657 const struct net_port_vlans *v,
658 struct sk_buff *skb)
659{
660 return skb;
661}
662
552406c4 663static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
243a2e63
VY		 664{
665 return -EOPNOTSUPP;
666}
667
668static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
669{
670 return -EOPNOTSUPP;
671}
672
673static inline void br_vlan_flush(struct net_bridge *br)
674{
675}
676
552406c4 677static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
243a2e63
VY		 678{
679 return -EOPNOTSUPP;
680}
681
682static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
683{
684 return -EOPNOTSUPP;
685}
686
687static inline void nbp_vlan_flush(struct net_bridge_port *port)
688{
689}
690
a37b85c9
VY		 691static inline struct net_port_vlans *br_get_vlan_info(
692 const struct net_bridge *br)
693{
694 return NULL;
695}
696static inline struct net_port_vlans *nbp_get_vlan_info(
697 const struct net_bridge_port *p)
698{
699 return NULL;
700}
701
bc9a25d2
VY		 702static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid)
703{
704 return false;
705}
706
78851988 707static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
a37b85c9
VY		 708{
709 return 0;
710}
78851988
VY		 711static inline u16 br_get_pvid(const struct net_port_vlans *v)
712{
713 return VLAN_N_VID; /* Returns invalid vid */
714}
243a2e63
VY		 715#endif
716
1da177e4 717/* br_netfilter.c */
c0909713 718#ifdef CONFIG_BRIDGE_NETFILTER
348662a1
JP		 719int br_netfilter_init(void);
720void br_netfilter_fini(void);
721void br_netfilter_rtable_init(struct net_bridge *);
c0909713
SH		 722#else
723#define br_netfilter_init() (0)
31a5b837 724#define br_netfilter_fini() do { } while (0)
4adf0af6 725#define br_netfilter_rtable_init(x)
c0909713 726#endif
1da177e4
LT		 727
728/* br_stp.c */
348662a1
JP		 729void br_log_state(const struct net_bridge_port *p);
730struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
731void br_init_port(struct net_bridge_port *p);
732void br_become_designated_port(struct net_bridge_port *p);
1da177e4 733
348662a1
JP		 734void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
735int br_set_forward_delay(struct net_bridge *br, unsigned long x);
736int br_set_hello_time(struct net_bridge *br, unsigned long x);
737int br_set_max_age(struct net_bridge *br, unsigned long x);
14f98f25 738
739
1da177e4 740/* br_stp_if.c */
348662a1
JP		 741void br_stp_enable_bridge(struct net_bridge *br);
742void br_stp_disable_bridge(struct net_bridge *br);
743void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
744void br_stp_enable_port(struct net_bridge_port *p);
745void br_stp_disable_port(struct net_bridge_port *p);
746bool br_stp_recalculate_bridge_id(struct net_bridge *br);
747void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
748void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
749int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
750int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
751ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1da177e4
LT		 752
753/* br_stp_bpdu.c */
7c85fbf0 754struct stp_proto;
348662a1
JP		 755void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
756 struct net_device *dev);
1da177e4
LT		 757
758/* br_stp_timer.c */
348662a1
JP		 759void br_stp_timer_init(struct net_bridge *br);
760void br_stp_port_timer_init(struct net_bridge_port *p);
761unsigned long br_timer_value(const struct timer_list *timer);
1da177e4
LT		 762
763/* br.c */
e6373c4c 764#if IS_ENABLED(CONFIG_ATM_LANE)
da678292
MM		 765extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
766#endif
1da177e4 767
11dc1f36 768/* br_netlink.c */
149ddd83 769extern struct rtnl_link_ops br_link_ops;
348662a1
JP		 770int br_netlink_init(void);
771void br_netlink_fini(void);
772void br_ifinfo_notify(int event, struct net_bridge_port *port);
773int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg);
774int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg);
775int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
776 u32 filter_mask);
11dc1f36 777
1da177e4
LT		 778#ifdef CONFIG_SYSFS
779/* br_sysfs_if.c */
52cf25d0 780extern const struct sysfs_ops brport_sysfs_ops;
348662a1
JP		 781int br_sysfs_addif(struct net_bridge_port *p);
782int br_sysfs_renameif(struct net_bridge_port *p);
1da177e4
LT		 783
784/* br_sysfs_br.c */
348662a1
JP		 785int br_sysfs_addbr(struct net_device *dev);
786void br_sysfs_delbr(struct net_device *dev);
1da177e4
LT		 787
788#else
789
0cb2bbbe
LJ		 790static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
791static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
792static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
793static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1da177e4
LT		 794#endif /* CONFIG_SYSFS */
795
796#endif
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