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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Linux ethernet bridge
3 *
4 * Authors:
5 * Lennert Buytenhek <buytenh@gnu.org>
6 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * 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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070017#include <linux/if_bridge.h>
Herbert Xu91d2c342010-06-10 16:12:50 +000018#include <linux/netpoll.h>
Eric Dumazet406818f2010-06-23 13:00:48 -070019#include <linux/u64_stats_sync.h>
Simon Wunderlich4adf0af2008-07-30 16:27:55 -070020#include <net/route.h>
Bernhard Thalerefb6de92015-05-30 15:30:16 +020021#include <net/ip6_fib.h>
Vlad Yasevich243a2e62013-02-13 12:00:09 +000022#include <linux/if_vlan.h>
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +020023#include <linux/rhashtable.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024
25#define BR_HASH_BITS 8
26#define BR_HASH_SIZE (1 << BR_HASH_BITS)
27
28#define BR_HOLD_TIME (1*HZ)
29
30#define BR_PORT_BITS 10
31#define BR_MAX_PORTS (1<<BR_PORT_BITS)
32
Stephen Hemminger9cde0702007-03-21 14:22:44 -070033#define BR_VERSION "2.3"
34
stephen hemminger515853c2011-10-03 18:14:46 +000035/* Control of forwarding link local multicast */
36#define BR_GROUPFWD_DEFAULT 0
Bernhard Thaler784b58a2015-05-04 22:47:13 +020037/* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */
38#define BR_GROUPFWD_RESTRICTED 0x0007u
Toshiaki Makitaf2808d22014-06-10 20:59:24 +090039/* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */
40#define BR_GROUPFWD_8021AD 0xB801u
stephen hemminger515853c2011-10-03 18:14:46 +000041
Stephen Hemminger9cde0702007-03-21 14:22:44 -070042/* Path to usermode spanning tree program */
43#define BR_STP_PROG "/sbin/bridge-stp"
Stephen Hemminger8cbb512e2005-12-21 19:01:30 -080044
Linus Torvalds1da177e2005-04-16 15:20:36 -070045typedef struct bridge_id bridge_id;
46typedef struct mac_addr mac_addr;
47typedef __u16 port_id;
48
49struct bridge_id
50{
51 unsigned char prio[2];
Joe Perchese5a727f2014-02-23 00:05:25 -080052 unsigned char addr[ETH_ALEN];
Linus Torvalds1da177e2005-04-16 15:20:36 -070053};
54
55struct mac_addr
56{
Joe Perchese5a727f2014-02-23 00:05:25 -080057 unsigned char addr[ETH_ALEN];
Linus Torvalds1da177e2005-04-16 15:20:36 -070058};
59
Linus Lüssingcc0fdd82013-08-30 17:28:17 +020060#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
61/* our own querier */
Linus Lüssing90010b32014-06-07 18:26:26 +020062struct bridge_mcast_own_query {
Linus Lüssingcc0fdd82013-08-30 17:28:17 +020063 struct timer_list timer;
64 u32 startup_sent;
65};
66
67/* other querier */
Linus Lüssing90010b32014-06-07 18:26:26 +020068struct bridge_mcast_other_query {
Linus Lüssingcc0fdd82013-08-30 17:28:17 +020069 struct timer_list timer;
70 unsigned long delay_time;
71};
Linus Lüssingdc4eb532014-06-07 18:26:27 +020072
73/* selected querier */
74struct bridge_mcast_querier {
75 struct br_ip addr;
Linus Lüssing2cd41432014-06-07 18:26:29 +020076 struct net_bridge_port __rcu *port;
Linus Lüssingdc4eb532014-06-07 18:26:27 +020077};
Linus Lüssingcc0fdd82013-08-30 17:28:17 +020078#endif
79
Nikolay Aleksandrov6dada9b2016-04-30 10:25:28 +020080struct br_vlan_stats {
81 u64 rx_bytes;
82 u64 rx_packets;
83 u64 tx_bytes;
84 u64 tx_packets;
85 struct u64_stats_sync syncp;
86};
87
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +020088/**
89 * struct net_bridge_vlan - per-vlan entry
90 *
91 * @vnode: rhashtable member
92 * @vid: VLAN id
93 * @flags: bridge vlan flags
Nikolay Aleksandrov6dada9b2016-04-30 10:25:28 +020094 * @stats: per-cpu VLAN statistics
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +020095 * @br: if MASTER flag set, this points to a bridge struct
96 * @port: if MASTER flag unset, this points to a port struct
97 * @refcnt: if MASTER flag set, this is bumped for each port referencing it
98 * @brvlan: if MASTER flag unset, this points to the global per-VLAN context
99 * for this VLAN entry
100 * @vlist: sorted list of VLAN entries
101 * @rcu: used for entry destruction
102 *
103 * This structure is shared between the global per-VLAN entries contained in
104 * the bridge rhashtable and the local per-port per-VLAN entries contained in
105 * the port's rhashtable. The union entries should be interpreted depending on
106 * the entry flags that are set.
107 */
108struct net_bridge_vlan {
109 struct rhash_head vnode;
110 u16 vid;
111 u16 flags;
Nikolay Aleksandrov6dada9b2016-04-30 10:25:28 +0200112 struct br_vlan_stats __percpu *stats;
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000113 union {
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200114 struct net_bridge *br;
115 struct net_bridge_port *port;
116 };
117 union {
118 atomic_t refcnt;
119 struct net_bridge_vlan *brvlan;
120 };
121 struct list_head vlist;
122
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000123 struct rcu_head rcu;
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200124};
125
126/**
127 * struct net_bridge_vlan_group
128 *
129 * @vlan_hash: VLAN entry rhashtable
130 * @vlan_list: sorted VLAN entry list
131 * @num_vlans: number of total VLAN entries
Nikolay Aleksandrov77751ee2015-09-30 20:16:53 +0200132 * @pvid: PVID VLAN id
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200133 *
134 * IMPORTANT: Be careful when checking if there're VLAN entries using list
135 * primitives because the bridge can have entries in its list which
136 * are just for global context but not for filtering, i.e. they have
137 * the master flag set but not the brentry flag. If you have to check
138 * if there're "real" entries in the bridge please test @num_vlans
139 */
140struct net_bridge_vlan_group {
141 struct rhashtable vlan_hash;
142 struct list_head vlan_list;
Vlad Yasevich6cbdcee2013-02-13 12:00:13 +0000143 u16 num_vlans;
Nikolay Aleksandrov77751ee2015-09-30 20:16:53 +0200144 u16 pvid;
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000145};
146
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147struct net_bridge_fdb_entry
148{
149 struct hlist_node hlist;
150 struct net_bridge_port *dst;
151
stephen hemminger7cd88612011-04-04 14:03:28 +0000152 unsigned long updated;
153 unsigned long used;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 mac_addr addr;
Nikolay Aleksandrovb22fbf22015-08-27 14:19:20 -0700155 __u16 vlan_id;
Jiri Pirko93859b12014-11-28 14:34:14 +0100156 unsigned char is_local:1,
157 is_static:1,
Scott Feldmancf6b8e12014-11-28 14:34:21 +0100158 added_by_user:1,
159 added_by_external_learn:1;
Nikolay Aleksandrovb22fbf22015-08-27 14:19:20 -0700160 struct rcu_head rcu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161};
162
Elad Raz9d06b6d2016-02-03 09:57:05 +0100163#define MDB_PG_FLAGS_PERMANENT BIT(0)
164#define MDB_PG_FLAGS_OFFLOAD BIT(1)
165
Herbert Xueb1d1642010-02-27 19:41:45 +0000166struct net_bridge_port_group {
167 struct net_bridge_port *port;
Eric Dumazete8051682010-11-15 06:38:10 +0000168 struct net_bridge_port_group __rcu *next;
Herbert Xueb1d1642010-02-27 19:41:45 +0000169 struct hlist_node mglist;
170 struct rcu_head rcu;
171 struct timer_list timer;
YOSHIFUJI Hideaki8ef2a9a2010-04-18 12:42:07 +0900172 struct br_ip addr;
Elad Raz9d06b6d2016-02-03 09:57:05 +0100173 unsigned char flags;
Herbert Xueb1d1642010-02-27 19:41:45 +0000174};
175
176struct net_bridge_mdb_entry
177{
178 struct hlist_node hlist[2];
Herbert Xueb1d1642010-02-27 19:41:45 +0000179 struct net_bridge *br;
Eric Dumazete8051682010-11-15 06:38:10 +0000180 struct net_bridge_port_group __rcu *ports;
Herbert Xueb1d1642010-02-27 19:41:45 +0000181 struct rcu_head rcu;
182 struct timer_list timer;
YOSHIFUJI Hideaki8ef2a9a2010-04-18 12:42:07 +0900183 struct br_ip addr;
Herbert Xu8a870172011-02-12 01:05:42 -0800184 bool mglist;
Herbert Xueb1d1642010-02-27 19:41:45 +0000185};
186
187struct net_bridge_mdb_htable
188{
189 struct hlist_head *mhash;
190 struct rcu_head rcu;
191 struct net_bridge_mdb_htable *old;
192 u32 size;
193 u32 max;
194 u32 secret;
195 u32 ver;
196};
197
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198struct net_bridge_port
199{
200 struct net_bridge *br;
201 struct net_device *dev;
202 struct list_head list;
203
204 /* STP */
205 u8 priority;
206 u8 state;
207 u16 port_no;
208 unsigned char topology_change_ack;
209 unsigned char config_pending;
210 port_id port_id;
211 port_id designated_port;
212 bridge_id designated_root;
213 bridge_id designated_bridge;
214 u32 path_cost;
215 u32 designated_cost;
stephen hemminger0c031502011-07-22 07:47:06 +0000216 unsigned long designated_age;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217
218 struct timer_list forward_delay_timer;
219 struct timer_list hold_timer;
220 struct timer_list message_age_timer;
221 struct kobject kobj;
222 struct rcu_head rcu;
Fischer, Anna3982d3d2009-08-13 06:55:16 +0000223
224 unsigned long flags;
Herbert Xueb1d1642010-02-27 19:41:45 +0000225
226#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
Linus Lüssing90010b32014-06-07 18:26:26 +0200227 struct bridge_mcast_own_query ip4_own_query;
Linus Lüssingcc0fdd82013-08-30 17:28:17 +0200228#if IS_ENABLED(CONFIG_IPV6)
Linus Lüssing90010b32014-06-07 18:26:26 +0200229 struct bridge_mcast_own_query ip6_own_query;
Linus Lüssingcc0fdd82013-08-30 17:28:17 +0200230#endif /* IS_ENABLED(CONFIG_IPV6) */
Herbert Xueb1d1642010-02-27 19:41:45 +0000231 unsigned char multicast_router;
232 struct timer_list multicast_router_timer;
Herbert Xueb1d1642010-02-27 19:41:45 +0000233 struct hlist_head mglist;
234 struct hlist_node rlist;
235#endif
Simon Arlotte0f43752010-05-10 09:31:11 +0000236
237#ifdef CONFIG_SYSFS
238 char sysfs_name[IFNAMSIZ];
239#endif
Herbert Xu91d2c342010-06-10 16:12:50 +0000240
241#ifdef CONFIG_NET_POLL_CONTROLLER
242 struct netpoll *np;
243#endif
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000244#ifdef CONFIG_BRIDGE_VLAN_FILTERING
Nikolay Aleksandrov907b1e62015-10-12 21:47:02 +0200245 struct net_bridge_vlan_group __rcu *vlgrp;
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000246#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247};
248
Vlad Yaseviche028e4b2014-05-16 09:59:16 -0400249#define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
Vlad Yasevichf3a6ddf2014-05-16 09:59:18 -0400250#define br_promisc_port(p) ((p)->flags & BR_PROMISC)
Vlad Yaseviche028e4b2014-05-16 09:59:16 -0400251
Jiri Pirkof350a0a82010-06-15 06:50:45 +0000252#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
253
stephen hemmingerb5ed54e2010-11-15 06:38:13 +0000254static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
255{
Hong Zhiguo716ec052013-09-14 22:42:28 +0800256 return rcu_dereference(dev->rx_handler_data);
stephen hemmingerb5ed54e2010-11-15 06:38:13 +0000257}
258
Hong Zhiguo1fb17542013-09-14 22:42:27 +0800259static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
stephen hemmingerb5ed54e2010-11-15 06:38:13 +0000260{
Eric Dumazetec1e5612010-11-15 06:38:14 +0000261 return br_port_exists(dev) ?
262 rtnl_dereference(dev->rx_handler_data) : NULL;
stephen hemmingerb5ed54e2010-11-15 06:38:13 +0000263}
264
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265struct net_bridge
266{
267 spinlock_t lock;
268 struct list_head port_list;
269 struct net_device *dev;
stephen hemminger14bb4782010-03-02 13:32:09 +0000270
Li RongQing8f849852014-01-04 13:57:59 +0800271 struct pcpu_sw_netstats __percpu *stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 spinlock_t hash_lock;
273 struct hlist_head hash[BR_HASH_SIZE];
Pablo Neira Ayuso34666d42014-09-18 11:29:03 +0200274#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
Bernhard Thalerefb6de92015-05-30 15:30:16 +0200275 union {
276 struct rtable fake_rtable;
277 struct rt6_info fake_rt6_info;
278 };
Patrick McHardy4df53d82010-07-02 09:32:57 +0200279 bool nf_call_iptables;
280 bool nf_call_ip6tables;
281 bool nf_call_arptables;
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700282#endif
stephen hemminger515853c2011-10-03 18:14:46 +0000283 u16 group_fwd_mask;
Toshiaki Makitaf2808d22014-06-10 20:59:24 +0900284 u16 group_fwd_mask_required;
stephen hemminger515853c2011-10-03 18:14:46 +0000285
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 /* STP */
287 bridge_id designated_root;
288 bridge_id bridge_id;
289 u32 root_path_cost;
290 unsigned long max_age;
291 unsigned long hello_time;
292 unsigned long forward_delay;
293 unsigned long bridge_max_age;
294 unsigned long ageing_time;
295 unsigned long bridge_hello_time;
296 unsigned long bridge_forward_delay;
297
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800298 u8 group_addr[ETH_ALEN];
Toshiaki Makita204177f2014-06-10 20:59:25 +0900299 bool group_addr_set;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 u16 root_port;
Stephen Hemminger9cde0702007-03-21 14:22:44 -0700301
302 enum {
303 BR_NO_STP, /* no spanning tree */
304 BR_KERNEL_STP, /* old STP in kernel */
305 BR_USER_STP, /* new RSTP in userspace */
306 } stp_enabled;
307
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 unsigned char topology_change;
309 unsigned char topology_change_detected;
310
Herbert Xueb1d1642010-02-27 19:41:45 +0000311#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
312 unsigned char multicast_router;
313
314 u8 multicast_disabled:1;
Herbert Xuc5c23262012-04-13 02:37:42 +0000315 u8 multicast_querier:1;
Cong Wang1c8ad5b2013-05-21 21:52:54 +0000316 u8 multicast_query_use_ifaddr:1;
Herbert Xueb1d1642010-02-27 19:41:45 +0000317
318 u32 hash_elasticity;
319 u32 hash_max;
320
321 u32 multicast_last_member_count;
Herbert Xueb1d1642010-02-27 19:41:45 +0000322 u32 multicast_startup_query_count;
323
324 unsigned long multicast_last_member_interval;
325 unsigned long multicast_membership_interval;
326 unsigned long multicast_querier_interval;
327 unsigned long multicast_query_interval;
328 unsigned long multicast_query_response_interval;
329 unsigned long multicast_startup_query_interval;
330
331 spinlock_t multicast_lock;
Eric Dumazete8051682010-11-15 06:38:10 +0000332 struct net_bridge_mdb_htable __rcu *mdb;
Herbert Xueb1d1642010-02-27 19:41:45 +0000333 struct hlist_head router_list;
Herbert Xueb1d1642010-02-27 19:41:45 +0000334
335 struct timer_list multicast_router_timer;
Linus Lüssing90010b32014-06-07 18:26:26 +0200336 struct bridge_mcast_other_query ip4_other_query;
337 struct bridge_mcast_own_query ip4_own_query;
Linus Lüssingdc4eb532014-06-07 18:26:27 +0200338 struct bridge_mcast_querier ip4_querier;
Linus Lüssingcc0fdd82013-08-30 17:28:17 +0200339#if IS_ENABLED(CONFIG_IPV6)
Linus Lüssing90010b32014-06-07 18:26:26 +0200340 struct bridge_mcast_other_query ip6_other_query;
341 struct bridge_mcast_own_query ip6_own_query;
Linus Lüssingdc4eb532014-06-07 18:26:27 +0200342 struct bridge_mcast_querier ip6_querier;
Linus Lüssingcc0fdd82013-08-30 17:28:17 +0200343#endif /* IS_ENABLED(CONFIG_IPV6) */
Herbert Xueb1d1642010-02-27 19:41:45 +0000344#endif
345
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 struct timer_list hello_timer;
347 struct timer_list tcn_timer;
348 struct timer_list topology_change_timer;
349 struct timer_list gc_timer;
Greg Kroah-Hartman43b98c42007-12-17 15:54:39 -0400350 struct kobject *ifobj;
Vlad Yaseviche028e4b2014-05-16 09:59:16 -0400351 u32 auto_cnt;
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000352#ifdef CONFIG_BRIDGE_VLAN_FILTERING
Nikolay Aleksandrov907b1e62015-10-12 21:47:02 +0200353 struct net_bridge_vlan_group __rcu *vlgrp;
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000354 u8 vlan_enabled;
Nikolay Aleksandrov6dada9b2016-04-30 10:25:28 +0200355 u8 vlan_stats_enabled;
Toshiaki Makita8580e212014-06-10 20:59:23 +0900356 __be16 vlan_proto;
Vlad Yasevich96a20d92014-10-03 11:29:16 -0400357 u16 default_pvid;
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000358#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359};
360
Herbert Xu68b7c892010-02-27 19:41:40 +0000361struct br_input_skb_cb {
362 struct net_device *brdev;
Herbert Xu93fdd472014-10-05 12:00:22 +0800363
YOSHIFUJI Hideaki / 吉藤英明32dec5d2010-03-15 21:51:18 +0000364#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
Herbert Xueb1d1642010-02-27 19:41:45 +0000365 int igmp;
366 int mrouters_only;
YOSHIFUJI Hideaki / 吉藤英明32dec5d2010-03-15 21:51:18 +0000367#endif
Herbert Xu93fdd472014-10-05 12:00:22 +0800368
Jouni Malinen842a9ae2015-03-04 12:54:21 +0200369 bool proxyarp_replied;
Herbert Xu93fdd472014-10-05 12:00:22 +0800370
Vlad Yasevich20adfa12014-09-12 16:26:16 -0400371#ifdef CONFIG_BRIDGE_VLAN_FILTERING
372 bool vlan_filtered;
373#endif
Herbert Xu68b7c892010-02-27 19:41:40 +0000374};
375
376#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
377
YOSHIFUJI Hideaki / 吉藤英明32dec5d2010-03-15 21:51:18 +0000378#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
379# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
380#else
381# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
382#endif
383
stephen hemminger28a16c92010-05-10 09:31:09 +0000384#define br_printk(level, br, format, args...) \
385 printk(level "%s: " format, (br)->dev->name, ##args)
386
387#define br_err(__br, format, args...) \
388 br_printk(KERN_ERR, __br, format, ##args)
389#define br_warn(__br, format, args...) \
390 br_printk(KERN_WARNING, __br, format, ##args)
391#define br_notice(__br, format, args...) \
392 br_printk(KERN_NOTICE, __br, format, ##args)
393#define br_info(__br, format, args...) \
394 br_printk(KERN_INFO, __br, format, ##args)
395
396#define br_debug(br, format, args...) \
397 pr_debug("%s: " format, (br)->dev->name, ##args)
398
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399/* called under bridge lock */
400static inline int br_is_root_bridge(const struct net_bridge *br)
401{
402 return !memcmp(&br->bridge_id, &br->designated_root, 8);
403}
404
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200405/* check if a VLAN entry is global */
406static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
407{
408 return v->flags & BRIDGE_VLAN_INFO_MASTER;
409}
410
411/* check if a VLAN entry is used by the bridge */
412static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
413{
414 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
415}
416
Nikolay Aleksandrov6be144f2015-10-02 15:05:13 +0200417/* check if we should use the vlan entry, returns false if it's only context */
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200418static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
419{
420 if (br_vlan_is_master(v)) {
421 if (br_vlan_is_brentry(v))
422 return true;
423 else
424 return false;
425 }
426
427 return true;
428}
429
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430/* br_device.c */
Joe Perches348662a2013-10-18 13:48:22 -0700431void br_dev_setup(struct net_device *dev);
432void br_dev_delete(struct net_device *dev, struct list_head *list);
433netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
stephen hemmingercfb478d2010-05-10 09:31:08 +0000434#ifdef CONFIG_NET_POLL_CONTROLLER
Herbert Xu91d2c342010-06-10 16:12:50 +0000435static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
436 struct sk_buff *skb)
437{
438 struct netpoll *np = p->np;
439
440 if (np)
441 netpoll_send_skb(np, skb);
442}
443
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700444int br_netpoll_enable(struct net_bridge_port *p);
Joe Perches348662a2013-10-18 13:48:22 -0700445void br_netpoll_disable(struct net_bridge_port *p);
Herbert Xu91d2c342010-06-10 16:12:50 +0000446#else
Herbert Xu9f70b0f2010-06-15 21:43:48 -0700447static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
Herbert Xu91d2c342010-06-10 16:12:50 +0000448 struct sk_buff *skb)
449{
450}
451
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700452static inline int br_netpoll_enable(struct net_bridge_port *p)
Herbert Xu91d2c342010-06-10 16:12:50 +0000453{
454 return 0;
455}
456
457static inline void br_netpoll_disable(struct net_bridge_port *p)
458{
459}
stephen hemmingercfb478d2010-05-10 09:31:08 +0000460#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461
462/* br_fdb.c */
Joe Perches348662a2013-10-18 13:48:22 -0700463int br_fdb_init(void);
464void br_fdb_fini(void);
465void br_fdb_flush(struct net_bridge *br);
Toshiaki Makita424bb9c2014-02-07 16:48:25 +0900466void br_fdb_find_delete_local(struct net_bridge *br,
467 const struct net_bridge_port *p,
468 const unsigned char *addr, u16 vid);
Joe Perches348662a2013-10-18 13:48:22 -0700469void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
470void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
471void br_fdb_cleanup(unsigned long arg);
472void br_fdb_delete_by_port(struct net_bridge *br,
Nikolay Aleksandrov1ea2d022015-06-23 05:28:16 -0700473 const struct net_bridge_port *p, u16 vid, int do_all);
Joe Perches348662a2013-10-18 13:48:22 -0700474struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
475 const unsigned char *addr, __u16 vid);
476int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
477int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
478 unsigned long off);
479int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
480 const unsigned char *addr, u16 vid);
481void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
Toshiaki Makitaa5642ab2014-02-07 16:48:18 +0900482 const unsigned char *addr, u16 vid, bool added_by_user);
John Fastabend77162022012-04-15 06:43:56 +0000483
Joe Perches348662a2013-10-18 13:48:22 -0700484int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
Jiri Pirkof6f64242014-11-28 14:34:15 +0100485 struct net_device *dev, const unsigned char *addr, u16 vid);
Joe Perches348662a2013-10-18 13:48:22 -0700486int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
Jiri Pirkof6f64242014-11-28 14:34:15 +0100487 const unsigned char *addr, u16 vid, u16 nlh_flags);
Joe Perches348662a2013-10-18 13:48:22 -0700488int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
Jamal Hadi Salim5d5eacb2014-07-10 07:01:58 -0400489 struct net_device *dev, struct net_device *fdev, int idx);
Vlad Yasevich8db24af2014-05-16 09:59:17 -0400490int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
491void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
Jiri Pirko3aeb6612015-01-15 23:49:37 +0100492int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
493 const unsigned char *addr, u16 vid);
494int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
495 const unsigned char *addr, u16 vid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496
497/* br_forward.c */
Joe Perches348662a2013-10-18 13:48:22 -0700498void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb);
Eric W. Biederman0c4b51f2015-09-15 20:04:18 -0500499int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
Joe Perches348662a2013-10-18 13:48:22 -0700500void br_forward(const struct net_bridge_port *to,
Michael Braun7f7708f2010-03-16 00:26:22 -0700501 struct sk_buff *skb, struct sk_buff *skb0);
Eric W. Biederman0c4b51f2015-09-15 20:04:18 -0500502int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
Joe Perches348662a2013-10-18 13:48:22 -0700503void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast);
504void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
505 struct sk_buff *skb2, bool unicast);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506
507/* br_if.c */
Joe Perches348662a2013-10-18 13:48:22 -0700508void br_port_carrier_check(struct net_bridge_port *p);
509int br_add_bridge(struct net *net, const char *name);
510int br_del_bridge(struct net *net, const char *name);
Joe Perches348662a2013-10-18 13:48:22 -0700511int br_add_if(struct net_bridge *br, struct net_device *dev);
512int br_del_if(struct net_bridge *br, struct net_device *dev);
513int br_min_mtu(const struct net_bridge *br);
514netdev_features_t br_features_recompute(struct net_bridge *br,
515 netdev_features_t features);
Vlad Yaseviche028e4b2014-05-16 09:59:16 -0400516void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
Vlad Yasevich2796d0c2014-05-16 09:59:20 -0400517void br_manage_promisc(struct net_bridge *br);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518
519/* br_input.c */
Eric W. Biederman0c4b51f2015-09-15 20:04:18 -0500520int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
Joe Perches348662a2013-10-18 13:48:22 -0700521rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522
Jiri Pirko859828c2013-12-05 16:27:37 +0100523static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
524{
525 return rcu_dereference(dev->rx_handler) == br_handle_frame;
526}
527
528static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
529{
530 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
531}
532
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533/* br_ioctl.c */
Joe Perches348662a2013-10-18 13:48:22 -0700534int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
535int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
536 void __user *arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537
Herbert Xueb1d1642010-02-27 19:41:45 +0000538/* br_multicast.c */
539#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
Cong Wang2ce297f2012-12-10 02:15:35 +0000540extern unsigned int br_mdb_rehash_seq;
Joe Perches348662a2013-10-18 13:48:22 -0700541int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
David S. Miller394efd12013-11-04 13:48:30 -0500542 struct sk_buff *skb, u16 vid);
Joe Perches348662a2013-10-18 13:48:22 -0700543struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
544 struct sk_buff *skb, u16 vid);
545void br_multicast_add_port(struct net_bridge_port *port);
546void br_multicast_del_port(struct net_bridge_port *port);
547void br_multicast_enable_port(struct net_bridge_port *port);
548void br_multicast_disable_port(struct net_bridge_port *port);
549void br_multicast_init(struct net_bridge *br);
550void br_multicast_open(struct net_bridge *br);
551void br_multicast_stop(struct net_bridge *br);
Satish Ashoke10177a2015-07-15 07:16:51 -0700552void br_multicast_dev_del(struct net_bridge *br);
Joe Perches348662a2013-10-18 13:48:22 -0700553void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
554 struct sk_buff *skb);
555void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
556 struct sk_buff *skb, struct sk_buff *skb2);
557int br_multicast_set_router(struct net_bridge *br, unsigned long val);
558int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
559int br_multicast_toggle(struct net_bridge *br, unsigned long val);
560int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
561int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
562struct net_bridge_mdb_entry *
563br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
564struct net_bridge_mdb_entry *
565br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port,
566 struct br_ip *group);
567void br_multicast_free_pg(struct rcu_head *head);
568struct net_bridge_port_group *
569br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
570 struct net_bridge_port_group __rcu *next,
Elad Raz9d06b6d2016-02-03 09:57:05 +0100571 unsigned char flags);
Joe Perches348662a2013-10-18 13:48:22 -0700572void br_mdb_init(void);
573void br_mdb_uninit(void);
Elad Raz45ebcce2016-04-21 12:52:45 +0200574void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
575 struct br_ip *group, int type, u8 flags);
Satish Ashok949f1e32015-07-23 05:00:53 -0700576void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
577 int type);
Sridhar Samudrala85b35262010-03-01 09:53:04 +0000578
Cong Wangcfd56752012-12-11 22:23:08 +0000579#define mlock_dereference(X, br) \
580 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
581
Sridhar Samudrala85b35262010-03-01 09:53:04 +0000582static inline bool br_multicast_is_router(struct net_bridge *br)
583{
584 return br->multicast_router == 2 ||
585 (br->multicast_router == 1 &&
586 timer_pending(&br->multicast_router_timer));
587}
Linus Lüssingb00589a2013-08-01 01:06:20 +0200588
Linus Lüssingcc0fdd82013-08-30 17:28:17 +0200589static inline bool
590__br_multicast_querier_exists(struct net_bridge *br,
Linus Lüssing90010b32014-06-07 18:26:26 +0200591 struct bridge_mcast_other_query *querier)
Linus Lüssingb00589a2013-08-01 01:06:20 +0200592{
Linus Lüssingcc0fdd82013-08-30 17:28:17 +0200593 return time_is_before_jiffies(querier->delay_time) &&
594 (br->multicast_querier || timer_pending(&querier->timer));
595}
596
597static inline bool br_multicast_querier_exists(struct net_bridge *br,
598 struct ethhdr *eth)
599{
600 switch (eth->h_proto) {
601 case (htons(ETH_P_IP)):
Linus Lüssing90010b32014-06-07 18:26:26 +0200602 return __br_multicast_querier_exists(br, &br->ip4_other_query);
Linus Lüssingcc0fdd82013-08-30 17:28:17 +0200603#if IS_ENABLED(CONFIG_IPV6)
604 case (htons(ETH_P_IPV6)):
Linus Lüssing90010b32014-06-07 18:26:26 +0200605 return __br_multicast_querier_exists(br, &br->ip6_other_query);
Linus Lüssingcc0fdd82013-08-30 17:28:17 +0200606#endif
607 default:
608 return false;
609 }
Linus Lüssingb00589a2013-08-01 01:06:20 +0200610}
Herbert Xueb1d1642010-02-27 19:41:45 +0000611#else
612static inline int br_multicast_rcv(struct net_bridge *br,
613 struct net_bridge_port *port,
Vlad Yasevich06499092013-10-28 15:45:07 -0400614 struct sk_buff *skb,
615 u16 vid)
Herbert Xueb1d1642010-02-27 19:41:45 +0000616{
617 return 0;
618}
619
620static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
Cong Wangfbca58a2013-03-07 03:05:33 +0000621 struct sk_buff *skb, u16 vid)
Herbert Xueb1d1642010-02-27 19:41:45 +0000622{
623 return NULL;
624}
625
626static inline void br_multicast_add_port(struct net_bridge_port *port)
627{
628}
629
630static inline void br_multicast_del_port(struct net_bridge_port *port)
631{
632}
633
634static inline void br_multicast_enable_port(struct net_bridge_port *port)
635{
636}
637
638static inline void br_multicast_disable_port(struct net_bridge_port *port)
639{
640}
641
642static inline void br_multicast_init(struct net_bridge *br)
643{
644}
645
646static inline void br_multicast_open(struct net_bridge *br)
647{
648}
649
650static inline void br_multicast_stop(struct net_bridge *br)
651{
652}
Herbert Xu5cb5e942010-02-27 19:41:46 +0000653
Nikolay Aleksandrova7ce45a2015-07-20 23:03:45 +0200654static inline void br_multicast_dev_del(struct net_bridge *br)
655{
656}
657
Herbert Xu5cb5e942010-02-27 19:41:46 +0000658static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
659 struct sk_buff *skb)
660{
661}
662
663static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
664 struct sk_buff *skb,
665 struct sk_buff *skb2)
666{
667}
Herbert Xueb1d1642010-02-27 19:41:45 +0000668static inline bool br_multicast_is_router(struct net_bridge *br)
669{
Sridhar Samudrala85b35262010-03-01 09:53:04 +0000670 return 0;
Herbert Xueb1d1642010-02-27 19:41:45 +0000671}
Linus Lüssingcc0fdd82013-08-30 17:28:17 +0200672static inline bool br_multicast_querier_exists(struct net_bridge *br,
673 struct ethhdr *eth)
Linus Lüssingb00589a2013-08-01 01:06:20 +0200674{
675 return false;
676}
Rami Rosenfdb184d2013-01-03 13:30:43 +0200677static inline void br_mdb_init(void)
678{
679}
680static inline void br_mdb_uninit(void)
681{
682}
Sridhar Samudrala85b35262010-03-01 09:53:04 +0000683#endif
Herbert Xueb1d1642010-02-27 19:41:45 +0000684
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000685/* br_vlan.c */
686#ifdef CONFIG_BRIDGE_VLAN_FILTERING
Nikolay Aleksandrov77751ee2015-09-30 20:16:53 +0200687bool br_allowed_ingress(const struct net_bridge *br,
688 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
689 u16 *vid);
690bool br_allowed_egress(struct net_bridge_vlan_group *vg,
Joe Perches348662a2013-10-18 13:48:22 -0700691 const struct sk_buff *skb);
Toshiaki Makitae0d79682014-05-26 15:15:53 +0900692bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
Joe Perches348662a2013-10-18 13:48:22 -0700693struct sk_buff *br_handle_vlan(struct net_bridge *br,
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200694 struct net_bridge_vlan_group *vg,
Joe Perches348662a2013-10-18 13:48:22 -0700695 struct sk_buff *skb);
696int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
697int br_vlan_delete(struct net_bridge *br, u16 vid);
698void br_vlan_flush(struct net_bridge *br);
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200699struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
Toshiaki Makita204177f2014-06-10 20:59:25 +0900700void br_recalculate_fwd_mask(struct net_bridge *br);
Nikolay Aleksandrova7854032015-08-07 19:40:45 +0300701int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
Joe Perches348662a2013-10-18 13:48:22 -0700702int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
Toshiaki Makitad2d427b2015-08-27 15:32:26 +0900703int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
Toshiaki Makita204177f2014-06-10 20:59:25 +0900704int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
Nikolay Aleksandrov6dada9b2016-04-30 10:25:28 +0200705int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
Vlad Yasevich5be5a2d2014-10-03 11:29:18 -0400706int br_vlan_init(struct net_bridge *br);
Vlad Yasevich96a20d92014-10-03 11:29:16 -0400707int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
Nikolay Aleksandrov0f963b72015-10-04 14:23:47 +0200708int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid);
Joe Perches348662a2013-10-18 13:48:22 -0700709int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
710int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
711void nbp_vlan_flush(struct net_bridge_port *port);
Vlad Yasevich5be5a2d2014-10-03 11:29:18 -0400712int nbp_vlan_init(struct net_bridge_port *port);
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200713int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
Nikolay Aleksandrova60c0902016-04-30 10:25:29 +0200714void br_vlan_get_stats(const struct net_bridge_vlan *v,
715 struct br_vlan_stats *stats);
Vlad Yasevicha37b85c2013-02-13 12:00:10 +0000716
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200717static inline struct net_bridge_vlan_group *br_vlan_group(
718 const struct net_bridge *br)
Vlad Yasevicha37b85c2013-02-13 12:00:10 +0000719{
Nikolay Aleksandrov907b1e62015-10-12 21:47:02 +0200720 return rtnl_dereference(br->vlgrp);
Vlad Yasevicha37b85c2013-02-13 12:00:10 +0000721}
722
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200723static inline struct net_bridge_vlan_group *nbp_vlan_group(
724 const struct net_bridge_port *p)
Vlad Yasevicha37b85c2013-02-13 12:00:10 +0000725{
Nikolay Aleksandrov907b1e62015-10-12 21:47:02 +0200726 return rtnl_dereference(p->vlgrp);
727}
728
729static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
730 const struct net_bridge *br)
731{
732 return rcu_dereference(br->vlgrp);
733}
734
735static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
736 const struct net_bridge_port *p)
737{
738 return rcu_dereference(p->vlgrp);
Vlad Yasevicha37b85c2013-02-13 12:00:10 +0000739}
740
741/* Since bridge now depends on 8021Q module, but the time bridge sees the
742 * skb, the vlan tag will always be present if the frame was tagged.
743 */
744static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
745{
746 int err = 0;
747
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200748 if (skb_vlan_tag_present(skb)) {
Jiri Pirkodf8a39d2015-01-13 17:13:44 +0100749 *vid = skb_vlan_tag_get(skb) & VLAN_VID_MASK;
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200750 } else {
Vlad Yasevicha37b85c2013-02-13 12:00:10 +0000751 *vid = 0;
752 err = -EINVAL;
753 }
754
755 return err;
756}
Vlad Yasevich78851982013-02-13 12:00:14 +0000757
Nikolay Aleksandrov77751ee2015-09-30 20:16:53 +0200758static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
Vlad Yasevich78851982013-02-13 12:00:14 +0000759{
Nikolay Aleksandrov77751ee2015-09-30 20:16:53 +0200760 if (!vg)
Vlad Yasevich5be5a2d2014-10-03 11:29:18 -0400761 return 0;
762
Vlad Yasevich78851982013-02-13 12:00:14 +0000763 smp_rmb();
Nikolay Aleksandrov77751ee2015-09-30 20:16:53 +0200764 return vg->pvid;
Vlad Yasevich78851982013-02-13 12:00:14 +0000765}
766
Vlad Yasevich2796d0c2014-05-16 09:59:20 -0400767static inline int br_vlan_enabled(struct net_bridge *br)
768{
769 return br->vlan_enabled;
770}
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000771#else
Nikolay Aleksandrov77751ee2015-09-30 20:16:53 +0200772static inline bool br_allowed_ingress(const struct net_bridge *br,
773 struct net_bridge_vlan_group *vg,
Vlad Yasevich78851982013-02-13 12:00:14 +0000774 struct sk_buff *skb,
775 u16 *vid)
Vlad Yasevicha37b85c2013-02-13 12:00:10 +0000776{
777 return true;
778}
779
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200780static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
Vlad Yasevich85f46c62013-02-13 12:00:11 +0000781 const struct sk_buff *skb)
782{
783 return true;
784}
785
Toshiaki Makitae0d79682014-05-26 15:15:53 +0900786static inline bool br_should_learn(struct net_bridge_port *p,
787 struct sk_buff *skb, u16 *vid)
788{
789 return true;
790}
791
Vlad Yasevich78851982013-02-13 12:00:14 +0000792static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200793 struct net_bridge_vlan_group *vg,
Vlad Yasevich78851982013-02-13 12:00:14 +0000794 struct sk_buff *skb)
795{
796 return skb;
797}
798
Vlad Yasevich552406c2013-02-13 12:00:15 +0000799static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000800{
801 return -EOPNOTSUPP;
802}
803
804static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
805{
806 return -EOPNOTSUPP;
807}
808
809static inline void br_vlan_flush(struct net_bridge *br)
810{
811}
812
Toshiaki Makita204177f2014-06-10 20:59:25 +0900813static inline void br_recalculate_fwd_mask(struct net_bridge *br)
814{
815}
816
Vlad Yasevich5be5a2d2014-10-03 11:29:18 -0400817static inline int br_vlan_init(struct net_bridge *br)
Toshiaki Makita8580e212014-06-10 20:59:23 +0900818{
Vlad Yasevich5be5a2d2014-10-03 11:29:18 -0400819 return 0;
Toshiaki Makita8580e212014-06-10 20:59:23 +0900820}
821
Vlad Yasevich552406c2013-02-13 12:00:15 +0000822static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000823{
824 return -EOPNOTSUPP;
825}
826
827static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
828{
829 return -EOPNOTSUPP;
830}
831
832static inline void nbp_vlan_flush(struct net_bridge_port *port)
833{
834}
835
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200836static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
837 u16 vid)
Vlad Yasevicha37b85c2013-02-13 12:00:10 +0000838{
839 return NULL;
840}
Vlad Yasevichbc9a25d2013-02-13 12:00:19 +0000841
Vlad Yasevich5be5a2d2014-10-03 11:29:18 -0400842static inline int nbp_vlan_init(struct net_bridge_port *port)
843{
844 return 0;
845}
846
Vlad Yasevich78851982013-02-13 12:00:14 +0000847static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
Vlad Yasevicha37b85c2013-02-13 12:00:10 +0000848{
849 return 0;
850}
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200851
Nikolay Aleksandrov77751ee2015-09-30 20:16:53 +0200852static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
Vlad Yasevich78851982013-02-13 12:00:14 +0000853{
Vlad Yasevich3df6bf42014-10-03 11:29:17 -0400854 return 0;
Vlad Yasevich78851982013-02-13 12:00:14 +0000855}
Vlad Yasevich2796d0c2014-05-16 09:59:20 -0400856
Alexei Starovoitovd4f0e092014-05-18 10:30:28 -0700857static inline int br_vlan_enabled(struct net_bridge *br)
Vlad Yasevich2796d0c2014-05-16 09:59:20 -0400858{
859 return 0;
860}
Nikolay Aleksandrova7854032015-08-07 19:40:45 +0300861
862static inline int __br_vlan_filter_toggle(struct net_bridge *br,
863 unsigned long val)
864{
865 return -EOPNOTSUPP;
866}
Nikolay Aleksandrov2594e902015-09-25 19:00:11 +0200867
868static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
869 u32 filter_mask)
870{
871 return 0;
872}
873
874static inline struct net_bridge_vlan_group *br_vlan_group(
875 const struct net_bridge *br)
876{
877 return NULL;
878}
879
880static inline struct net_bridge_vlan_group *nbp_vlan_group(
881 const struct net_bridge_port *p)
882{
883 return NULL;
884}
Nikolay Aleksandrov907b1e62015-10-12 21:47:02 +0200885
886static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
887 const struct net_bridge *br)
888{
889 return NULL;
890}
891
892static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
893 const struct net_bridge_port *p)
894{
895 return NULL;
896}
Nikolay Aleksandrova60c0902016-04-30 10:25:29 +0200897
898static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
899 struct br_vlan_stats *stats)
900{
901}
Vlad Yasevich243a2e62013-02-13 12:00:09 +0000902#endif
903
Pablo Neira Ayuso1a4ba642015-03-10 10:27:18 +0100904struct nf_br_ops {
905 int (*br_dev_xmit_hook)(struct sk_buff *skb);
906};
907extern const struct nf_br_ops __rcu *nf_br_ops;
908
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909/* br_netfilter.c */
Pablo Neira Ayuso34666d42014-09-18 11:29:03 +0200910#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
911int br_nf_core_init(void);
912void br_nf_core_fini(void);
Joe Perches348662a2013-10-18 13:48:22 -0700913void br_netfilter_rtable_init(struct net_bridge *);
Stephen Hemmingerc0909712006-05-25 15:59:33 -0700914#else
Pablo Neira Ayuso34666d42014-09-18 11:29:03 +0200915static inline int br_nf_core_init(void) { return 0; }
916static inline void br_nf_core_fini(void) {}
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700917#define br_netfilter_rtable_init(x)
Stephen Hemmingerc0909712006-05-25 15:59:33 -0700918#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919
920/* br_stp.c */
Florian Fainelli775dd692014-09-30 16:13:19 -0700921void br_set_state(struct net_bridge_port *p, unsigned int state);
Joe Perches348662a2013-10-18 13:48:22 -0700922struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
923void br_init_port(struct net_bridge_port *p);
924void br_become_designated_port(struct net_bridge_port *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925
Joe Perches348662a2013-10-18 13:48:22 -0700926void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
927int br_set_forward_delay(struct net_bridge *br, unsigned long x);
928int br_set_hello_time(struct net_bridge *br, unsigned long x);
929int br_set_max_age(struct net_bridge *br, unsigned long x);
Scott Feldmanc62987b2015-10-08 19:23:19 -0700930int br_set_ageing_time(struct net_bridge *br, u32 ageing_time);
stephen hemminger14f98f22011-04-04 14:03:33 +0000931
932
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933/* br_stp_if.c */
Joe Perches348662a2013-10-18 13:48:22 -0700934void br_stp_enable_bridge(struct net_bridge *br);
935void br_stp_disable_bridge(struct net_bridge *br);
936void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
937void br_stp_enable_port(struct net_bridge_port *p);
938void br_stp_disable_port(struct net_bridge_port *p);
939bool br_stp_recalculate_bridge_id(struct net_bridge *br);
940void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
941void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
942int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
943int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
944ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700945
946/* br_stp_bpdu.c */
Patrick McHardy7c85fbf2008-07-05 21:25:56 -0700947struct stp_proto;
Joe Perches348662a2013-10-18 13:48:22 -0700948void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
949 struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950
951/* br_stp_timer.c */
Joe Perches348662a2013-10-18 13:48:22 -0700952void br_stp_timer_init(struct net_bridge *br);
953void br_stp_port_timer_init(struct net_bridge_port *p);
954unsigned long br_timer_value(const struct timer_list *timer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955
956/* br.c */
Igor Maraviće6373c42011-12-12 02:58:25 +0000957#if IS_ENABLED(CONFIG_ATM_LANE)
Michał Mirosławda678292009-06-05 05:35:28 +0000958extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
959#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960
Stephen Hemminger11dc1f32006-05-25 16:00:12 -0700961/* br_netlink.c */
stephen hemminger149ddd82012-06-26 05:48:45 +0000962extern struct rtnl_link_ops br_link_ops;
Joe Perches348662a2013-10-18 13:48:22 -0700963int br_netlink_init(void);
964void br_netlink_fini(void);
965void br_ifinfo_notify(int event, struct net_bridge_port *port);
Roopa Prabhuadd511b2015-01-29 22:40:12 -0800966int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
967int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
Joe Perches348662a2013-10-18 13:48:22 -0700968int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
Nicolas Dichtel46c264d2015-04-28 18:33:49 +0200969 u32 filter_mask, int nlflags);
Stephen Hemminger11dc1f32006-05-25 16:00:12 -0700970
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971#ifdef CONFIG_SYSFS
972/* br_sysfs_if.c */
Emese Revfy52cf25d2010-01-19 02:58:23 +0100973extern const struct sysfs_ops brport_sysfs_ops;
Joe Perches348662a2013-10-18 13:48:22 -0700974int br_sysfs_addif(struct net_bridge_port *p);
975int br_sysfs_renameif(struct net_bridge_port *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700976
977/* br_sysfs_br.c */
Joe Perches348662a2013-10-18 13:48:22 -0700978int br_sysfs_addbr(struct net_device *dev);
979void br_sysfs_delbr(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980
981#else
982
Lee Jones0cb2bbb2012-11-03 23:02:30 +0100983static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
984static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
985static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
986static inline void br_sysfs_delbr(struct net_device *dev) { return; }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987#endif /* CONFIG_SYSFS */
988
989#endif