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bridge: Add a default_pvid sysfs attribute
[linux-2.6-block.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
f2808d22
TM		 38/* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */
39#define BR_GROUPFWD_8021AD 0xB801u
515853cc 40
9cde0708
SH		 41/* Path to usermode spanning tree program */
42#define BR_STP_PROG "/sbin/bridge-stp"
8cbb512e 43
1da177e4
LT		 44typedef struct bridge_id bridge_id;
45typedef struct mac_addr mac_addr;
46typedef __u16 port_id;
47
48struct bridge_id
49{
50 unsigned char prio[2];
e5a727f6 51 unsigned char addr[ETH_ALEN];
1da177e4
LT		 52};
53
54struct mac_addr
55{
e5a727f6 56 unsigned char addr[ETH_ALEN];
1da177e4
LT		 57};
58
cc0fdd80
LL		 59#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
60/* our own querier */
90010b36 61struct bridge_mcast_own_query {
cc0fdd80
LL		 62 struct timer_list timer;
63 u32 startup_sent;
64};
65
66/* other querier */
90010b36 67struct bridge_mcast_other_query {
cc0fdd80
LL		 68 struct timer_list timer;
69 unsigned long delay_time;
70};
dc4eb53a
LL		 71
72/* selected querier */
73struct bridge_mcast_querier {
74 struct br_ip addr;
2cd41431 75 struct net_bridge_port __rcu *port;
dc4eb53a 76};
cc0fdd80
LL		 77#endif
78
243a2e63
VY		 79struct net_port_vlans {
80 u16 port_idx;
78851988 81 u16 pvid;
243a2e63
VY		 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];
35e03f3a 88 unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN];
6cbdceeb 89 u16 num_vlans;
243a2e63
VY		 90};
91
1da177e4
LT		 92struct net_bridge_fdb_entry
93{
94 struct hlist_node hlist;
95 struct net_bridge_port *dst;
96
97 struct rcu_head rcu;
7cd8861a 98 unsigned long updated;
99 unsigned long used;
1da177e4
LT		 100 mac_addr addr;
101 unsigned char is_local;
102 unsigned char is_static;
a5642ab4 103 unsigned char added_by_user;
2ba071ec 104 __u16 vlan_id;
1da177e4
LT		 105};
106
eb1d1641
HX		 107struct net_bridge_port_group {
108 struct net_bridge_port *port;
e8051688 109 struct net_bridge_port_group __rcu *next;
eb1d1641
HX		 110 struct hlist_node mglist;
111 struct rcu_head rcu;
112 struct timer_list timer;
8ef2a9a5 113 struct br_ip addr;
ccb1c31a 114 unsigned char state;
eb1d1641
HX		 115};
116
117struct net_bridge_mdb_entry
118{
119 struct hlist_node hlist[2];
eb1d1641 120 struct net_bridge *br;
e8051688 121 struct net_bridge_port_group __rcu *ports;
eb1d1641
HX		 122 struct rcu_head rcu;
123 struct timer_list timer;
8ef2a9a5 124 struct br_ip addr;
8a870178 125 bool mglist;
eb1d1641
HX		 126};
127
128struct 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
1da177e4
LT		 139struct 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;
0c03150e 157 unsigned long designated_age;
1da177e4
LT		 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;
3982d3d2
FA		 164
165 unsigned long flags;
166#define BR_HAIRPIN_MODE 0x00000001
a2e01a65 167#define BR_BPDU_GUARD 0x00000002
1007dd1a 168#define BR_ROOT_BLOCK 0x00000004
c2d3babf 169#define BR_MULTICAST_FAST_LEAVE 0x00000008
8f3359bd 170#define BR_ADMIN_COST 0x00000010
9ba18891 171#define BR_LEARNING 0x00000020
867a5943 172#define BR_FLOOD 0x00000040
e028e4b8 173#define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING)
f3a6ddf1 174#define BR_PROMISC 0x00000080
eb1d1641
HX		 175
176#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
90010b36 177 struct bridge_mcast_own_query ip4_own_query;
cc0fdd80 178#if IS_ENABLED(CONFIG_IPV6)
90010b36 179 struct bridge_mcast_own_query ip6_own_query;
cc0fdd80 180#endif /* IS_ENABLED(CONFIG_IPV6) */
eb1d1641
HX		 181 unsigned char multicast_router;
182 struct timer_list multicast_router_timer;
eb1d1641
HX		 183 struct hlist_head mglist;
184 struct hlist_node rlist;
185#endif
e0f43752
SA		 186
187#ifdef CONFIG_SYSFS
188 char sysfs_name[IFNAMSIZ];
189#endif
91d2c34a
HX		 190
191#ifdef CONFIG_NET_POLL_CONTROLLER
192 struct netpoll *np;
193#endif
243a2e63
VY		 194#ifdef CONFIG_BRIDGE_VLAN_FILTERING
195 struct net_port_vlans __rcu *vlan_info;
196#endif
1da177e4
LT		 197};
198
e028e4b8 199#define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
f3a6ddf1 200#define br_promisc_port(p) ((p)->flags & BR_PROMISC)
e028e4b8 201
f350a0a8
JP		 202#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
203
b5ed54e9 204static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
205{
716ec052 206 return rcu_dereference(dev->rx_handler_data);
b5ed54e9 207}
208
1fb1754a 209static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
b5ed54e9 210{
ec1e5610
ED		 211 return br_port_exists(dev) ?
212 rtnl_dereference(dev->rx_handler_data) : NULL;
b5ed54e9 213}
214
1da177e4
LT		 215struct net_bridge
216{
217 spinlock_t lock;
218 struct list_head port_list;
219 struct net_device *dev;
14bb4789 220
8f84985f 221 struct pcpu_sw_netstats __percpu *stats;
1da177e4
LT		 222 spinlock_t hash_lock;
223 struct hlist_head hash[BR_HASH_SIZE];
34666d46 224#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
4adf0af6 225 struct rtable fake_rtable;
4df53d8b
PM		 226 bool nf_call_iptables;
227 bool nf_call_ip6tables;
228 bool nf_call_arptables;
4adf0af6 229#endif
515853cc 230 u16 group_fwd_mask;
f2808d22 231 u16 group_fwd_mask_required;
515853cc 232
1da177e4
LT		 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
fda93d92 245 u8 group_addr[ETH_ALEN];
204177f3 246 bool group_addr_set;
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;
90010b36
LL		 283 struct bridge_mcast_other_query ip4_other_query;
284 struct bridge_mcast_own_query ip4_own_query;
dc4eb53a 285 struct bridge_mcast_querier ip4_querier;
cc0fdd80 286#if IS_ENABLED(CONFIG_IPV6)
90010b36
LL		 287 struct bridge_mcast_other_query ip6_other_query;
288 struct bridge_mcast_own_query ip6_own_query;
dc4eb53a 289 struct bridge_mcast_querier ip6_querier;
cc0fdd80 290#endif /* IS_ENABLED(CONFIG_IPV6) */
eb1d1641
HX		 291#endif
292
1da177e4
LT		 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;
43b98c4a 297 struct kobject *ifobj;
e028e4b8 298 u32 auto_cnt;
243a2e63
VY		 299#ifdef CONFIG_BRIDGE_VLAN_FILTERING
300 u8 vlan_enabled;
8580e211 301 __be16 vlan_proto;
96a20d9d 302 u16 default_pvid;
243a2e63
VY		 303 struct net_port_vlans __rcu *vlan_info;
304#endif
1da177e4
LT		 305};
306
68b7c895
HX		 307struct br_input_skb_cb {
308 struct net_device *brdev;
32dec5dd 309#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
eb1d1641
HX		 310 int igmp;
311 int mrouters_only;
32dec5dd 312#endif
20adfa1a
VY		 313#ifdef CONFIG_BRIDGE_VLAN_FILTERING
314 bool vlan_filtered;
315#endif
68b7c895
HX		 316};
317
318#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
319
32dec5dd
YH		 320#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
321# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
322#else
323# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
324#endif
325
28a16c97 326#define br_printk(level, br, format, args...) \
327 printk(level "%s: " format, (br)->dev->name, ##args)
328
329#define br_err(__br, format, args...) \
330 br_printk(KERN_ERR, __br, format, ##args)
331#define br_warn(__br, format, args...) \
332 br_printk(KERN_WARNING, __br, format, ##args)
333#define br_notice(__br, format, args...) \
334 br_printk(KERN_NOTICE, __br, format, ##args)
335#define br_info(__br, format, args...) \
336 br_printk(KERN_INFO, __br, format, ##args)
337
338#define br_debug(br, format, args...) \
339 pr_debug("%s: " format, (br)->dev->name, ##args)
340
1da177e4
LT		 341/* called under bridge lock */
342static inline int br_is_root_bridge(const struct net_bridge *br)
343{
344 return !memcmp(&br->bridge_id, &br->designated_root, 8);
345}
346
1da177e4 347/* br_device.c */
348662a1
JP		 348void br_dev_setup(struct net_device *dev);
349void br_dev_delete(struct net_device *dev, struct list_head *list);
350netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
cfb478da 351#ifdef CONFIG_NET_POLL_CONTROLLER
91d2c34a
HX		 352static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
353 struct sk_buff *skb)
354{
355 struct netpoll *np = p->np;
356
357 if (np)
358 netpoll_send_skb(np, skb);
359}
360
a8779ec1 361int br_netpoll_enable(struct net_bridge_port *p);
348662a1 362void br_netpoll_disable(struct net_bridge_port *p);
cfb478da 363#else
9f70b0fc 364static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
91d2c34a
HX		 365 struct sk_buff *skb)
366{
367}
cfb478da 368
a8779ec1 369static inline int br_netpoll_enable(struct net_bridge_port *p)
91d2c34a
HX		 370{
371 return 0;
372}
373
374static inline void br_netpoll_disable(struct net_bridge_port *p)
375{
376}
cfb478da 377#endif
1da177e4
LT		 378
379/* br_fdb.c */
348662a1
JP		 380int br_fdb_init(void);
381void br_fdb_fini(void);
382void br_fdb_flush(struct net_bridge *br);
424bb9c9
TM		 383void br_fdb_find_delete_local(struct net_bridge *br,
384 const struct net_bridge_port *p,
385 const unsigned char *addr, u16 vid);
348662a1
JP		 386void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
387void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
388void br_fdb_cleanup(unsigned long arg);
389void br_fdb_delete_by_port(struct net_bridge *br,
390 const struct net_bridge_port *p, int do_all);
391struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
392 const unsigned char *addr, __u16 vid);
393int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
394int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
395 unsigned long off);
396int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
397 const unsigned char *addr, u16 vid);
398void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
a5642ab4 399 const unsigned char *addr, u16 vid, bool added_by_user);
348662a1
JP		 400
401int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
402 struct net_device *dev, const unsigned char *addr);
403int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
404 const unsigned char *addr, u16 nlh_flags);
405int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
5d5eacb3 406 struct net_device *dev, struct net_device *fdev, int idx);
8db24af7
VY		 407int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
408void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
1da177e4
LT		 409
410/* br_forward.c */
348662a1
JP		 411void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb);
412int br_dev_queue_push_xmit(struct sk_buff *skb);
413void br_forward(const struct net_bridge_port *to,
7f7708f0 414 struct sk_buff *skb, struct sk_buff *skb0);
348662a1
JP		 415int br_forward_finish(struct sk_buff *skb);
416void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast);
417void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
418 struct sk_buff *skb2, bool unicast);
1da177e4
LT		 419
420/* br_if.c */
348662a1
JP		 421void br_port_carrier_check(struct net_bridge_port *p);
422int br_add_bridge(struct net *net, const char *name);
423int br_del_bridge(struct net *net, const char *name);
348662a1
JP		 424int br_add_if(struct net_bridge *br, struct net_device *dev);
425int br_del_if(struct net_bridge *br, struct net_device *dev);
426int br_min_mtu(const struct net_bridge *br);
427netdev_features_t br_features_recompute(struct net_bridge *br,
428 netdev_features_t features);
e028e4b8 429void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
2796d0c6 430void br_manage_promisc(struct net_bridge *br);
1da177e4
LT		 431
432/* br_input.c */
348662a1
JP		 433int br_handle_frame_finish(struct sk_buff *skb);
434rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
1da177e4 435
859828c0
JP		 436static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
437{
438 return rcu_dereference(dev->rx_handler) == br_handle_frame;
439}
440
441static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
442{
443 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
444}
445
1da177e4 446/* br_ioctl.c */
348662a1
JP		 447int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
448int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
449 void __user *arg);
1da177e4 450
eb1d1641
HX		 451/* br_multicast.c */
452#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
2ce297fc 453extern unsigned int br_mdb_rehash_seq;
348662a1 454int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
394efd19 455 struct sk_buff *skb, u16 vid);
348662a1
JP		 456struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
457 struct sk_buff *skb, u16 vid);
458void br_multicast_add_port(struct net_bridge_port *port);
459void br_multicast_del_port(struct net_bridge_port *port);
460void br_multicast_enable_port(struct net_bridge_port *port);
461void br_multicast_disable_port(struct net_bridge_port *port);
462void br_multicast_init(struct net_bridge *br);
463void br_multicast_open(struct net_bridge *br);
464void br_multicast_stop(struct net_bridge *br);
465void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
466 struct sk_buff *skb);
467void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
468 struct sk_buff *skb, struct sk_buff *skb2);
469int br_multicast_set_router(struct net_bridge *br, unsigned long val);
470int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
471int br_multicast_toggle(struct net_bridge *br, unsigned long val);
472int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
473int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
474struct net_bridge_mdb_entry *
475br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
476struct net_bridge_mdb_entry *
477br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port,
478 struct br_ip *group);
479void br_multicast_free_pg(struct rcu_head *head);
480struct net_bridge_port_group *
481br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
482 struct net_bridge_port_group __rcu *next,
483 unsigned char state);
484void br_mdb_init(void);
485void br_mdb_uninit(void);
486void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
487 struct br_ip *group, int type);
85b35269 488
cfd56754
CW		 489#define mlock_dereference(X, br) \
490 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
491
85b35269
SS		 492static inline bool br_multicast_is_router(struct net_bridge *br)
493{
494 return br->multicast_router == 2 ||
495 (br->multicast_router == 1 &&
496 timer_pending(&br->multicast_router_timer));
497}
b00589af 498
cc0fdd80
LL		 499static inline bool
500__br_multicast_querier_exists(struct net_bridge *br,
90010b36 501 struct bridge_mcast_other_query *querier)
b00589af 502{
cc0fdd80
LL		 503 return time_is_before_jiffies(querier->delay_time) &&
504 (br->multicast_querier || timer_pending(&querier->timer));
505}
506
507static inline bool br_multicast_querier_exists(struct net_bridge *br,
508 struct ethhdr *eth)
509{
510 switch (eth->h_proto) {
511 case (htons(ETH_P_IP)):
90010b36 512 return __br_multicast_querier_exists(br, &br->ip4_other_query);
cc0fdd80
LL		 513#if IS_ENABLED(CONFIG_IPV6)
514 case (htons(ETH_P_IPV6)):
90010b36 515 return __br_multicast_querier_exists(br, &br->ip6_other_query);
cc0fdd80
LL		 516#endif
517 default:
518 return false;
519 }
b00589af 520}
eb1d1641
HX		 521#else
522static inline int br_multicast_rcv(struct net_bridge *br,
523 struct net_bridge_port *port,
06499098
VY		 524 struct sk_buff *skb,
525 u16 vid)
eb1d1641
HX		 526{
527 return 0;
528}
529
530static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
fbca58a2 531 struct sk_buff *skb, u16 vid)
eb1d1641
HX		 532{
533 return NULL;
534}
535
536static inline void br_multicast_add_port(struct net_bridge_port *port)
537{
538}
539
540static inline void br_multicast_del_port(struct net_bridge_port *port)
541{
542}
543
544static inline void br_multicast_enable_port(struct net_bridge_port *port)
545{
546}
547
548static inline void br_multicast_disable_port(struct net_bridge_port *port)
549{
550}
551
552static inline void br_multicast_init(struct net_bridge *br)
553{
554}
555
556static inline void br_multicast_open(struct net_bridge *br)
557{
558}
559
560static inline void br_multicast_stop(struct net_bridge *br)
561{
562}
5cb5e947
HX		 563
564static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
565 struct sk_buff *skb)
566{
567}
568
569static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
570 struct sk_buff *skb,
571 struct sk_buff *skb2)
572{
573}
eb1d1641
HX		 574static inline bool br_multicast_is_router(struct net_bridge *br)
575{
85b35269 576 return 0;
eb1d1641 577}
cc0fdd80
LL		 578static inline bool br_multicast_querier_exists(struct net_bridge *br,
579 struct ethhdr *eth)
b00589af
LL		 580{
581 return false;
582}
fdb184d1
RR		 583static inline void br_mdb_init(void)
584{
585}
586static inline void br_mdb_uninit(void)
587{
588}
85b35269 589#endif
eb1d1641 590
243a2e63
VY		 591/* br_vlan.c */
592#ifdef CONFIG_BRIDGE_VLAN_FILTERING
348662a1
JP		 593bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v,
594 struct sk_buff *skb, u16 *vid);
595bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v,
596 const struct sk_buff *skb);
e0d7968a 597bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
348662a1
JP		 598struct sk_buff *br_handle_vlan(struct net_bridge *br,
599 const struct net_port_vlans *v,
600 struct sk_buff *skb);
601int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
602int br_vlan_delete(struct net_bridge *br, u16 vid);
603void br_vlan_flush(struct net_bridge *br);
2b292fb4 604bool br_vlan_find(struct net_bridge *br, u16 vid);
204177f3 605void br_recalculate_fwd_mask(struct net_bridge *br);
348662a1 606int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
204177f3 607int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
8580e211 608void br_vlan_init(struct net_bridge *br);
96a20d9d 609int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
348662a1
JP		 610int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
611int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
612void nbp_vlan_flush(struct net_bridge_port *port);
613bool nbp_vlan_find(struct net_bridge_port *port, u16 vid);
a37b85c9
VY		 614
615static inline struct net_port_vlans *br_get_vlan_info(
616 const struct net_bridge *br)
617{
1690be63 618 return rcu_dereference_rtnl(br->vlan_info);
a37b85c9
VY		 619}
620
621static inline struct net_port_vlans *nbp_get_vlan_info(
622 const struct net_bridge_port *p)
623{
1690be63 624 return rcu_dereference_rtnl(p->vlan_info);
a37b85c9
VY		 625}
626
627/* Since bridge now depends on 8021Q module, but the time bridge sees the
628 * skb, the vlan tag will always be present if the frame was tagged.
629 */
630static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
631{
632 int err = 0;
633
634 if (vlan_tx_tag_present(skb))
635 *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK;
636 else {
637 *vid = 0;
638 err = -EINVAL;
639 }
640
641 return err;
642}
78851988
VY		 643
644static inline u16 br_get_pvid(const struct net_port_vlans *v)
645{
646 /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if
647 * vid wasn't set
648 */
649 smp_rmb();
d1c6c708 650 return v->pvid ?: VLAN_N_VID;
78851988
VY		 651}
652
2796d0c6
VY		 653static inline int br_vlan_enabled(struct net_bridge *br)
654{
655 return br->vlan_enabled;
656}
243a2e63 657#else
a37b85c9
VY		 658static inline bool br_allowed_ingress(struct net_bridge *br,
659 struct net_port_vlans *v,
78851988
VY		 660 struct sk_buff *skb,
661 u16 *vid)
a37b85c9
VY		 662{
663 return true;
664}
665
85f46c6b
VY		 666static inline bool br_allowed_egress(struct net_bridge *br,
667 const struct net_port_vlans *v,
668 const struct sk_buff *skb)
669{
670 return true;
671}
672
e0d7968a
TM		 673static inline bool br_should_learn(struct net_bridge_port *p,
674 struct sk_buff *skb, u16 *vid)
675{
676 return true;
677}
678
78851988
VY		 679static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
680 const struct net_port_vlans *v,
681 struct sk_buff *skb)
682{
683 return skb;
684}
685
552406c4 686static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
243a2e63
VY		 687{
688 return -EOPNOTSUPP;
689}
690
691static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
692{
693 return -EOPNOTSUPP;
694}
695
696static inline void br_vlan_flush(struct net_bridge *br)
697{
698}
699
2b292fb4
TM		 700static inline bool br_vlan_find(struct net_bridge *br, u16 vid)
701{
702 return false;
703}
704
204177f3
TM		 705static inline void br_recalculate_fwd_mask(struct net_bridge *br)
706{
707}
708
8580e211
TM		 709static inline void br_vlan_init(struct net_bridge *br)
710{
711}
712
552406c4 713static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
243a2e63
VY		 714{
715 return -EOPNOTSUPP;
716}
717
718static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
719{
720 return -EOPNOTSUPP;
721}
722
723static inline void nbp_vlan_flush(struct net_bridge_port *port)
724{
725}
726
a37b85c9
VY		 727static inline struct net_port_vlans *br_get_vlan_info(
728 const struct net_bridge *br)
729{
730 return NULL;
731}
732static inline struct net_port_vlans *nbp_get_vlan_info(
733 const struct net_bridge_port *p)
734{
735 return NULL;
736}
737
bc9a25d2
VY		 738static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid)
739{
740 return false;
741}
742
78851988 743static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
a37b85c9
VY		 744{
745 return 0;
746}
78851988
VY		 747static inline u16 br_get_pvid(const struct net_port_vlans *v)
748{
749 return VLAN_N_VID; /* Returns invalid vid */
750}
2796d0c6 751
d4f0e095 752static inline int br_vlan_enabled(struct net_bridge *br)
2796d0c6
VY		 753{
754 return 0;
755}
243a2e63
VY		 756#endif
757
1da177e4 758/* br_netfilter.c */
34666d46
PNA		 759#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
760int br_nf_core_init(void);
761void br_nf_core_fini(void);
348662a1 762void br_netfilter_rtable_init(struct net_bridge *);
c0909713 763#else
34666d46
PNA		 764static inline int br_nf_core_init(void) { return 0; }
765static inline void br_nf_core_fini(void) {}
4adf0af6 766#define br_netfilter_rtable_init(x)
c0909713 767#endif
1da177e4
LT		 768
769/* br_stp.c */
348662a1 770void br_log_state(const struct net_bridge_port *p);
775dd692 771void br_set_state(struct net_bridge_port *p, unsigned int state);
348662a1
JP		 772struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
773void br_init_port(struct net_bridge_port *p);
774void br_become_designated_port(struct net_bridge_port *p);
1da177e4 775
348662a1
JP		 776void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
777int br_set_forward_delay(struct net_bridge *br, unsigned long x);
778int br_set_hello_time(struct net_bridge *br, unsigned long x);
779int br_set_max_age(struct net_bridge *br, unsigned long x);
14f98f25 780
781
1da177e4 782/* br_stp_if.c */
348662a1
JP		 783void br_stp_enable_bridge(struct net_bridge *br);
784void br_stp_disable_bridge(struct net_bridge *br);
785void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
786void br_stp_enable_port(struct net_bridge_port *p);
787void br_stp_disable_port(struct net_bridge_port *p);
788bool br_stp_recalculate_bridge_id(struct net_bridge *br);
789void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
790void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
791int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
792int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
793ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1da177e4
LT		 794
795/* br_stp_bpdu.c */
7c85fbf0 796struct stp_proto;
348662a1
JP		 797void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
798 struct net_device *dev);
1da177e4
LT		 799
800/* br_stp_timer.c */
348662a1
JP		 801void br_stp_timer_init(struct net_bridge *br);
802void br_stp_port_timer_init(struct net_bridge_port *p);
803unsigned long br_timer_value(const struct timer_list *timer);
1da177e4
LT		 804
805/* br.c */
e6373c4c 806#if IS_ENABLED(CONFIG_ATM_LANE)
da678292
MM		 807extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
808#endif
1da177e4 809
11dc1f36 810/* br_netlink.c */
149ddd83 811extern struct rtnl_link_ops br_link_ops;
348662a1
JP		 812int br_netlink_init(void);
813void br_netlink_fini(void);
814void br_ifinfo_notify(int event, struct net_bridge_port *port);
815int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg);
816int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg);
817int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
818 u32 filter_mask);
11dc1f36 819
1da177e4
LT		 820#ifdef CONFIG_SYSFS
821/* br_sysfs_if.c */
52cf25d0 822extern const struct sysfs_ops brport_sysfs_ops;
348662a1
JP		 823int br_sysfs_addif(struct net_bridge_port *p);
824int br_sysfs_renameif(struct net_bridge_port *p);
1da177e4
LT		 825
826/* br_sysfs_br.c */
348662a1
JP		 827int br_sysfs_addbr(struct net_device *dev);
828void br_sysfs_delbr(struct net_device *dev);
1da177e4
LT		 829
830#else
831
0cb2bbbe
LJ		 832static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
833static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
834static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
835static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1da177e4
LT		 836#endif /* CONFIG_SYSFS */
837
838#endif
Linux 6.x block layer and io_uring tree(s)