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bridge: Add functionality to sync static fdb entries to hw
[mirror_ubuntu-hirsute-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];
e5a727f6 49 unsigned char addr[ETH_ALEN];
1da177e4
LT		 50};
51
52struct mac_addr
53{
e5a727f6 54 unsigned char addr[ETH_ALEN];
1da177e4
LT		 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;
a5642ab4 107 unsigned char added_by_user;
2ba071ec 108 __u16 vlan_id;
1da177e4
LT		 109};
110
eb1d1641
HX		 111struct net_bridge_port_group {
112 struct net_bridge_port *port;
e8051688 113 struct net_bridge_port_group __rcu *next;
eb1d1641
HX		 114 struct hlist_node mglist;
115 struct rcu_head rcu;
116 struct timer_list timer;
8ef2a9a5 117 struct br_ip addr;
ccb1c31a 118 unsigned char state;
eb1d1641
HX		 119};
120
121struct net_bridge_mdb_entry
122{
123 struct hlist_node hlist[2];
eb1d1641 124 struct net_bridge *br;
e8051688 125 struct net_bridge_port_group __rcu *ports;
eb1d1641
HX		 126 struct rcu_head rcu;
127 struct timer_list timer;
8ef2a9a5 128 struct br_ip addr;
8a870178 129 bool mglist;
eb1d1641
HX		 130};
131
132struct net_bridge_mdb_htable
133{
134 struct hlist_head *mhash;
135 struct rcu_head rcu;
136 struct net_bridge_mdb_htable *old;
137 u32 size;
138 u32 max;
139 u32 secret;
140 u32 ver;
141};
142
1da177e4
LT		 143struct net_bridge_port
144{
145 struct net_bridge *br;
146 struct net_device *dev;
147 struct list_head list;
148
149 /* STP */
150 u8 priority;
151 u8 state;
152 u16 port_no;
153 unsigned char topology_change_ack;
154 unsigned char config_pending;
155 port_id port_id;
156 port_id designated_port;
157 bridge_id designated_root;
158 bridge_id designated_bridge;
159 u32 path_cost;
160 u32 designated_cost;
0c03150e 161 unsigned long designated_age;
1da177e4
LT		 162
163 struct timer_list forward_delay_timer;
164 struct timer_list hold_timer;
165 struct timer_list message_age_timer;
166 struct kobject kobj;
167 struct rcu_head rcu;
3982d3d2
FA		 168
169 unsigned long flags;
170#define BR_HAIRPIN_MODE 0x00000001
a2e01a65 171#define BR_BPDU_GUARD 0x00000002
1007dd1a 172#define BR_ROOT_BLOCK 0x00000004
c2d3babf 173#define BR_MULTICAST_FAST_LEAVE 0x00000008
8f3359bd 174#define BR_ADMIN_COST 0x00000010
9ba18891 175#define BR_LEARNING 0x00000020
867a5943 176#define BR_FLOOD 0x00000040
e028e4b8 177#define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING)
eb1d1641
HX		 178
179#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
cc0fdd80
LL		 180 struct bridge_mcast_query ip4_query;
181#if IS_ENABLED(CONFIG_IPV6)
182 struct bridge_mcast_query ip6_query;
183#endif /* IS_ENABLED(CONFIG_IPV6) */
eb1d1641
HX		 184 unsigned char multicast_router;
185 struct timer_list multicast_router_timer;
eb1d1641
HX		 186 struct hlist_head mglist;
187 struct hlist_node rlist;
188#endif
e0f43752
SA		 189
190#ifdef CONFIG_SYSFS
191 char sysfs_name[IFNAMSIZ];
192#endif
91d2c34a
HX		 193
194#ifdef CONFIG_NET_POLL_CONTROLLER
195 struct netpoll *np;
196#endif
243a2e63
VY		 197#ifdef CONFIG_BRIDGE_VLAN_FILTERING
198 struct net_port_vlans __rcu *vlan_info;
199#endif
1da177e4
LT		 200};
201
e028e4b8
VY		 202#define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
203
f350a0a8
JP		 204#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
205
b5ed54e9 206static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
207{
716ec052 208 return rcu_dereference(dev->rx_handler_data);
b5ed54e9 209}
210
1fb1754a 211static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
b5ed54e9 212{
ec1e5610
ED		 213 return br_port_exists(dev) ?
214 rtnl_dereference(dev->rx_handler_data) : NULL;
b5ed54e9 215}
216
1da177e4
LT		 217struct net_bridge
218{
219 spinlock_t lock;
220 struct list_head port_list;
221 struct net_device *dev;
14bb4789 222
8f84985f 223 struct pcpu_sw_netstats __percpu *stats;
1da177e4
LT		 224 spinlock_t hash_lock;
225 struct hlist_head hash[BR_HASH_SIZE];
4adf0af6
SW		 226#ifdef CONFIG_BRIDGE_NETFILTER
227 struct rtable fake_rtable;
4df53d8b
PM		 228 bool nf_call_iptables;
229 bool nf_call_ip6tables;
230 bool nf_call_arptables;
4adf0af6 231#endif
515853cc 232 u16 group_fwd_mask;
233
1da177e4
LT		 234 /* STP */
235 bridge_id designated_root;
236 bridge_id bridge_id;
237 u32 root_path_cost;
238 unsigned long max_age;
239 unsigned long hello_time;
240 unsigned long forward_delay;
241 unsigned long bridge_max_age;
242 unsigned long ageing_time;
243 unsigned long bridge_hello_time;
244 unsigned long bridge_forward_delay;
245
fda93d92 246 u8 group_addr[ETH_ALEN];
1da177e4 247 u16 root_port;
9cde0708
SH		 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
1da177e4
LT		 255 unsigned char topology_change;
256 unsigned char topology_change_detected;
257
eb1d1641
HX		 258#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
259 unsigned char multicast_router;
260
261 u8 multicast_disabled:1;
c5c23260 262 u8 multicast_querier:1;
1c8ad5bf 263 u8 multicast_query_use_ifaddr:1;
eb1d1641
HX		 264
265 u32 hash_elasticity;
266 u32 hash_max;
267
268 u32 multicast_last_member_count;
eb1d1641
HX		 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;
e8051688 279 struct net_bridge_mdb_htable __rcu *mdb;
eb1d1641 280 struct hlist_head router_list;
eb1d1641
HX		 281
282 struct timer_list multicast_router_timer;
cc0fdd80
LL		 283 struct bridge_mcast_querier ip4_querier;
284 struct bridge_mcast_query ip4_query;
285#if IS_ENABLED(CONFIG_IPV6)
286 struct bridge_mcast_querier ip6_querier;
287 struct bridge_mcast_query ip6_query;
288#endif /* IS_ENABLED(CONFIG_IPV6) */
eb1d1641
HX		 289#endif
290
1da177e4
LT		 291 struct timer_list hello_timer;
292 struct timer_list tcn_timer;
293 struct timer_list topology_change_timer;
294 struct timer_list gc_timer;
43b98c4a 295 struct kobject *ifobj;
e028e4b8 296 u32 auto_cnt;
243a2e63
VY		 297#ifdef CONFIG_BRIDGE_VLAN_FILTERING
298 u8 vlan_enabled;
299 struct net_port_vlans __rcu *vlan_info;
300#endif
1da177e4
LT		 301};
302
68b7c895
HX		 303struct br_input_skb_cb {
304 struct net_device *brdev;
32dec5dd 305#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
eb1d1641
HX		 306 int igmp;
307 int mrouters_only;
32dec5dd 308#endif
68b7c895
HX		 309};
310
311#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
312
32dec5dd
YH		 313#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
314# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
315#else
316# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
317#endif
318
28a16c97 319#define br_printk(level, br, format, args...) \
320 printk(level "%s: " format, (br)->dev->name, ##args)
321
322#define br_err(__br, format, args...) \
323 br_printk(KERN_ERR, __br, format, ##args)
324#define br_warn(__br, format, args...) \
325 br_printk(KERN_WARNING, __br, format, ##args)
326#define br_notice(__br, format, args...) \
327 br_printk(KERN_NOTICE, __br, format, ##args)
328#define br_info(__br, format, args...) \
329 br_printk(KERN_INFO, __br, format, ##args)
330
331#define br_debug(br, format, args...) \
332 pr_debug("%s: " format, (br)->dev->name, ##args)
333
1da177e4 334extern struct notifier_block br_device_notifier;
1da177e4
LT		 335
336/* called under bridge lock */
337static inline int br_is_root_bridge(const struct net_bridge *br)
338{
339 return !memcmp(&br->bridge_id, &br->designated_root, 8);
340}
341
1da177e4 342/* br_device.c */
348662a1
JP		 343void br_dev_setup(struct net_device *dev);
344void br_dev_delete(struct net_device *dev, struct list_head *list);
345netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
cfb478da 346#ifdef CONFIG_NET_POLL_CONTROLLER
91d2c34a
HX		 347static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
348 struct sk_buff *skb)
349{
350 struct netpoll *np = p->np;
351
352 if (np)
353 netpoll_send_skb(np, skb);
354}
355
a8779ec1 356int br_netpoll_enable(struct net_bridge_port *p);
348662a1 357void br_netpoll_disable(struct net_bridge_port *p);
cfb478da 358#else
9f70b0fc 359static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
91d2c34a
HX		 360 struct sk_buff *skb)
361{
362}
cfb478da 363
a8779ec1 364static inline int br_netpoll_enable(struct net_bridge_port *p)
91d2c34a
HX		 365{
366 return 0;
367}
368
369static inline void br_netpoll_disable(struct net_bridge_port *p)
370{
371}
cfb478da 372#endif
1da177e4
LT		 373
374/* br_fdb.c */
348662a1
JP		 375int br_fdb_init(void);
376void br_fdb_fini(void);
377void br_fdb_flush(struct net_bridge *br);
424bb9c9
TM		 378void br_fdb_find_delete_local(struct net_bridge *br,
379 const struct net_bridge_port *p,
380 const unsigned char *addr, u16 vid);
348662a1
JP		 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,
a5642ab4 394 const unsigned char *addr, u16 vid, bool added_by_user);
348662a1
JP		 395
396int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
397 struct net_device *dev, const unsigned char *addr);
398int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
399 const unsigned char *addr, u16 nlh_flags);
400int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
401 struct net_device *dev, int idx);
8db24af7
VY		 402int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
403void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
1da177e4
LT		 404
405/* br_forward.c */
348662a1
JP		 406void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb);
407int br_dev_queue_push_xmit(struct sk_buff *skb);
408void br_forward(const struct net_bridge_port *to,
7f7708f0 409 struct sk_buff *skb, struct sk_buff *skb0);
348662a1
JP		 410int br_forward_finish(struct sk_buff *skb);
411void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast);
412void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
413 struct sk_buff *skb2, bool unicast);
1da177e4
LT		 414
415/* br_if.c */
348662a1
JP		 416void br_port_carrier_check(struct net_bridge_port *p);
417int br_add_bridge(struct net *net, const char *name);
418int br_del_bridge(struct net *net, const char *name);
348662a1
JP		 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);
e028e4b8 424void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
1da177e4
LT		 425
426/* br_input.c */
348662a1
JP		 427int br_handle_frame_finish(struct sk_buff *skb);
428rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
1da177e4 429
859828c0
JP		 430static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
431{
432 return rcu_dereference(dev->rx_handler) == br_handle_frame;
433}
434
435static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
436{
437 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
438}
439
1da177e4 440/* br_ioctl.c */
348662a1
JP		 441int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
442int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
443 void __user *arg);
1da177e4 444
eb1d1641
HX		 445/* br_multicast.c */
446#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
2ce297fc 447extern unsigned int br_mdb_rehash_seq;
348662a1 448int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
394efd19 449 struct sk_buff *skb, u16 vid);
348662a1
JP		 450struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
451 struct sk_buff *skb, u16 vid);
452void br_multicast_add_port(struct net_bridge_port *port);
453void br_multicast_del_port(struct net_bridge_port *port);
454void br_multicast_enable_port(struct net_bridge_port *port);
455void br_multicast_disable_port(struct net_bridge_port *port);
456void br_multicast_init(struct net_bridge *br);
457void br_multicast_open(struct net_bridge *br);
458void br_multicast_stop(struct net_bridge *br);
459void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
460 struct sk_buff *skb);
461void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
462 struct sk_buff *skb, struct sk_buff *skb2);
463int br_multicast_set_router(struct net_bridge *br, unsigned long val);
464int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
465int br_multicast_toggle(struct net_bridge *br, unsigned long val);
466int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
467int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
468struct net_bridge_mdb_entry *
469br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
470struct net_bridge_mdb_entry *
471br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port,
472 struct br_ip *group);
473void br_multicast_free_pg(struct rcu_head *head);
474struct net_bridge_port_group *
475br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
476 struct net_bridge_port_group __rcu *next,
477 unsigned char state);
478void br_mdb_init(void);
479void br_mdb_uninit(void);
480void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
481 struct br_ip *group, int type);
85b35269 482
cfd56754
CW		 483#define mlock_dereference(X, br) \
484 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
485
85b35269
SS		 486static inline bool br_multicast_is_router(struct net_bridge *br)
487{
488 return br->multicast_router == 2 ||
489 (br->multicast_router == 1 &&
490 timer_pending(&br->multicast_router_timer));
491}
b00589af 492
cc0fdd80
LL		 493static inline bool
494__br_multicast_querier_exists(struct net_bridge *br,
495 struct bridge_mcast_querier *querier)
b00589af 496{
cc0fdd80
LL		 497 return time_is_before_jiffies(querier->delay_time) &&
498 (br->multicast_querier || timer_pending(&querier->timer));
499}
500
501static inline bool br_multicast_querier_exists(struct net_bridge *br,
502 struct ethhdr *eth)
503{
504 switch (eth->h_proto) {
505 case (htons(ETH_P_IP)):
506 return __br_multicast_querier_exists(br, &br->ip4_querier);
507#if IS_ENABLED(CONFIG_IPV6)
508 case (htons(ETH_P_IPV6)):
509 return __br_multicast_querier_exists(br, &br->ip6_querier);
510#endif
511 default:
512 return false;
513 }
b00589af 514}
eb1d1641
HX		 515#else
516static inline int br_multicast_rcv(struct net_bridge *br,
517 struct net_bridge_port *port,
06499098
VY		 518 struct sk_buff *skb,
519 u16 vid)
eb1d1641
HX		 520{
521 return 0;
522}
523
524static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
fbca58a2 525 struct sk_buff *skb, u16 vid)
eb1d1641
HX		 526{
527 return NULL;
528}
529
530static inline void br_multicast_add_port(struct net_bridge_port *port)
531{
532}
533
534static inline void br_multicast_del_port(struct net_bridge_port *port)
535{
536}
537
538static inline void br_multicast_enable_port(struct net_bridge_port *port)
539{
540}
541
542static inline void br_multicast_disable_port(struct net_bridge_port *port)
543{
544}
545
546static inline void br_multicast_init(struct net_bridge *br)
547{
548}
549
550static inline void br_multicast_open(struct net_bridge *br)
551{
552}
553
554static inline void br_multicast_stop(struct net_bridge *br)
555{
556}
5cb5e947
HX		 557
558static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
559 struct sk_buff *skb)
560{
561}
562
563static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
564 struct sk_buff *skb,
565 struct sk_buff *skb2)
566{
567}
eb1d1641
HX		 568static inline bool br_multicast_is_router(struct net_bridge *br)
569{
85b35269 570 return 0;
eb1d1641 571}
cc0fdd80
LL		 572static inline bool br_multicast_querier_exists(struct net_bridge *br,
573 struct ethhdr *eth)
b00589af
LL		 574{
575 return false;
576}
fdb184d1
RR		 577static inline void br_mdb_init(void)
578{
579}
580static inline void br_mdb_uninit(void)
581{
582}
85b35269 583#endif
eb1d1641 584
243a2e63
VY		 585/* br_vlan.c */
586#ifdef CONFIG_BRIDGE_VLAN_FILTERING
348662a1
JP		 587bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v,
588 struct sk_buff *skb, u16 *vid);
589bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v,
590 const struct sk_buff *skb);
591struct sk_buff *br_handle_vlan(struct net_bridge *br,
592 const struct net_port_vlans *v,
593 struct sk_buff *skb);
594int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
595int br_vlan_delete(struct net_bridge *br, u16 vid);
596void br_vlan_flush(struct net_bridge *br);
2b292fb4 597bool br_vlan_find(struct net_bridge *br, u16 vid);
348662a1
JP		 598int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
599int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
600int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
601void nbp_vlan_flush(struct net_bridge_port *port);
602bool nbp_vlan_find(struct net_bridge_port *port, u16 vid);
a37b85c9
VY		 603
604static inline struct net_port_vlans *br_get_vlan_info(
605 const struct net_bridge *br)
606{
1690be63 607 return rcu_dereference_rtnl(br->vlan_info);
a37b85c9
VY		 608}
609
610static inline struct net_port_vlans *nbp_get_vlan_info(
611 const struct net_bridge_port *p)
612{
1690be63 613 return rcu_dereference_rtnl(p->vlan_info);
a37b85c9
VY		 614}
615
616/* Since bridge now depends on 8021Q module, but the time bridge sees the
617 * skb, the vlan tag will always be present if the frame was tagged.
618 */
619static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
620{
621 int err = 0;
622
623 if (vlan_tx_tag_present(skb))
624 *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK;
625 else {
626 *vid = 0;
627 err = -EINVAL;
628 }
629
630 return err;
631}
78851988
VY		 632
633static inline u16 br_get_pvid(const struct net_port_vlans *v)
634{
635 /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if
636 * vid wasn't set
637 */
638 smp_rmb();
d1c6c708 639 return v->pvid ?: VLAN_N_VID;
78851988
VY		 640}
641
243a2e63 642#else
a37b85c9
VY		 643static inline bool br_allowed_ingress(struct net_bridge *br,
644 struct net_port_vlans *v,
78851988
VY		 645 struct sk_buff *skb,
646 u16 *vid)
a37b85c9
VY		 647{
648 return true;
649}
650
85f46c6b
VY		 651static inline bool br_allowed_egress(struct net_bridge *br,
652 const struct net_port_vlans *v,
653 const struct sk_buff *skb)
654{
655 return true;
656}
657
78851988
VY		 658static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
659 const struct net_port_vlans *v,
660 struct sk_buff *skb)
661{
662 return skb;
663}
664
552406c4 665static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
243a2e63
VY		 666{
667 return -EOPNOTSUPP;
668}
669
670static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
671{
672 return -EOPNOTSUPP;
673}
674
675static inline void br_vlan_flush(struct net_bridge *br)
676{
677}
678
2b292fb4
TM		 679static inline bool br_vlan_find(struct net_bridge *br, u16 vid)
680{
681 return false;
682}
683
552406c4 684static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
243a2e63
VY		 685{
686 return -EOPNOTSUPP;
687}
688
689static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
690{
691 return -EOPNOTSUPP;
692}
693
694static inline void nbp_vlan_flush(struct net_bridge_port *port)
695{
696}
697
a37b85c9
VY		 698static inline struct net_port_vlans *br_get_vlan_info(
699 const struct net_bridge *br)
700{
701 return NULL;
702}
703static inline struct net_port_vlans *nbp_get_vlan_info(
704 const struct net_bridge_port *p)
705{
706 return NULL;
707}
708
bc9a25d2
VY		 709static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid)
710{
711 return false;
712}
713
78851988 714static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
a37b85c9
VY		 715{
716 return 0;
717}
78851988
VY		 718static inline u16 br_get_pvid(const struct net_port_vlans *v)
719{
720 return VLAN_N_VID; /* Returns invalid vid */
721}
243a2e63
VY		 722#endif
723
1da177e4 724/* br_netfilter.c */
c0909713 725#ifdef CONFIG_BRIDGE_NETFILTER
348662a1
JP		 726int br_netfilter_init(void);
727void br_netfilter_fini(void);
728void br_netfilter_rtable_init(struct net_bridge *);
c0909713
SH		 729#else
730#define br_netfilter_init() (0)
31a5b837 731#define br_netfilter_fini() do { } while (0)
4adf0af6 732#define br_netfilter_rtable_init(x)
c0909713 733#endif
1da177e4
LT		 734
735/* br_stp.c */
348662a1
JP		 736void br_log_state(const struct net_bridge_port *p);
737struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
738void br_init_port(struct net_bridge_port *p);
739void br_become_designated_port(struct net_bridge_port *p);
1da177e4 740
348662a1
JP		 741void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
742int br_set_forward_delay(struct net_bridge *br, unsigned long x);
743int br_set_hello_time(struct net_bridge *br, unsigned long x);
744int br_set_max_age(struct net_bridge *br, unsigned long x);
14f98f25 745
746
1da177e4 747/* br_stp_if.c */
348662a1
JP		 748void br_stp_enable_bridge(struct net_bridge *br);
749void br_stp_disable_bridge(struct net_bridge *br);
750void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
751void br_stp_enable_port(struct net_bridge_port *p);
752void br_stp_disable_port(struct net_bridge_port *p);
753bool br_stp_recalculate_bridge_id(struct net_bridge *br);
754void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
755void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
756int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
757int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
758ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1da177e4
LT		 759
760/* br_stp_bpdu.c */
7c85fbf0 761struct stp_proto;
348662a1
JP		 762void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
763 struct net_device *dev);
1da177e4
LT		 764
765/* br_stp_timer.c */
348662a1
JP		 766void br_stp_timer_init(struct net_bridge *br);
767void br_stp_port_timer_init(struct net_bridge_port *p);
768unsigned long br_timer_value(const struct timer_list *timer);
1da177e4
LT		 769
770/* br.c */
e6373c4c 771#if IS_ENABLED(CONFIG_ATM_LANE)
da678292
MM		 772extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
773#endif
1da177e4 774
11dc1f36 775/* br_netlink.c */
149ddd83 776extern struct rtnl_link_ops br_link_ops;
348662a1
JP		 777int br_netlink_init(void);
778void br_netlink_fini(void);
779void br_ifinfo_notify(int event, struct net_bridge_port *port);
780int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg);
781int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg);
782int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
783 u32 filter_mask);
11dc1f36 784
1da177e4
LT		 785#ifdef CONFIG_SYSFS
786/* br_sysfs_if.c */
52cf25d0 787extern const struct sysfs_ops brport_sysfs_ops;
348662a1
JP		 788int br_sysfs_addif(struct net_bridge_port *p);
789int br_sysfs_renameif(struct net_bridge_port *p);
1da177e4
LT		 790
791/* br_sysfs_br.c */
348662a1
JP		 792int br_sysfs_addbr(struct net_device *dev);
793void br_sysfs_delbr(struct net_device *dev);
1da177e4
LT		 794
795#else
796
0cb2bbbe
LJ		 797static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
798static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
799static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
800static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1da177e4
LT		 801#endif /* CONFIG_SYSFS */
802
803#endif
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