Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Linux ethernet bridge |
| 3 | * |
| 4 | * Authors: |
| 5 | * Lennert Buytenhek <buytenh@gnu.org> |
| 6 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <linux/if_bridge.h> |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 18 | #include <linux/netpoll.h> |
Eric Dumazet | 406818f | 2010-06-23 13:00:48 -0700 | [diff] [blame] | 19 | #include <linux/u64_stats_sync.h> |
Simon Wunderlich | 4adf0af | 2008-07-30 16:27:55 -0700 | [diff] [blame] | 20 | #include <net/route.h> |
Bernhard Thaler | efb6de9 | 2015-05-30 15:30:16 +0200 | [diff] [blame] | 21 | #include <net/ip6_fib.h> |
Vlad Yasevich | 243a2e6 | 2013-02-13 12:00:09 +0000 | [diff] [blame] | 22 | #include <linux/if_vlan.h> |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 23 | #include <linux/rhashtable.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | |
| 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 Hemminger | 9cde070 | 2007-03-21 14:22:44 -0700 | [diff] [blame] | 33 | #define BR_VERSION "2.3" |
| 34 | |
stephen hemminger | 515853c | 2011-10-03 18:14:46 +0000 | [diff] [blame] | 35 | /* Control of forwarding link local multicast */ |
| 36 | #define BR_GROUPFWD_DEFAULT 0 |
Bernhard Thaler | 784b58a | 2015-05-04 22:47:13 +0200 | [diff] [blame] | 37 | /* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */ |
| 38 | #define BR_GROUPFWD_RESTRICTED 0x0007u |
Toshiaki Makita | f2808d2 | 2014-06-10 20:59:24 +0900 | [diff] [blame] | 39 | /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */ |
| 40 | #define BR_GROUPFWD_8021AD 0xB801u |
stephen hemminger | 515853c | 2011-10-03 18:14:46 +0000 | [diff] [blame] | 41 | |
Stephen Hemminger | 9cde070 | 2007-03-21 14:22:44 -0700 | [diff] [blame] | 42 | /* Path to usermode spanning tree program */ |
| 43 | #define BR_STP_PROG "/sbin/bridge-stp" |
Stephen Hemminger | 8cbb512e | 2005-12-21 19:01:30 -0800 | [diff] [blame] | 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | typedef struct bridge_id bridge_id; |
| 46 | typedef struct mac_addr mac_addr; |
| 47 | typedef __u16 port_id; |
| 48 | |
| 49 | struct bridge_id |
| 50 | { |
| 51 | unsigned char prio[2]; |
Joe Perches | e5a727f | 2014-02-23 00:05:25 -0800 | [diff] [blame] | 52 | unsigned char addr[ETH_ALEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | }; |
| 54 | |
| 55 | struct mac_addr |
| 56 | { |
Joe Perches | e5a727f | 2014-02-23 00:05:25 -0800 | [diff] [blame] | 57 | unsigned char addr[ETH_ALEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | }; |
| 59 | |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 60 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 61 | /* our own querier */ |
Linus Lüssing | 90010b3 | 2014-06-07 18:26:26 +0200 | [diff] [blame] | 62 | struct bridge_mcast_own_query { |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 63 | struct timer_list timer; |
| 64 | u32 startup_sent; |
| 65 | }; |
| 66 | |
| 67 | /* other querier */ |
Linus Lüssing | 90010b3 | 2014-06-07 18:26:26 +0200 | [diff] [blame] | 68 | struct bridge_mcast_other_query { |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 69 | struct timer_list timer; |
| 70 | unsigned long delay_time; |
| 71 | }; |
Linus Lüssing | dc4eb53 | 2014-06-07 18:26:27 +0200 | [diff] [blame] | 72 | |
| 73 | /* selected querier */ |
| 74 | struct bridge_mcast_querier { |
| 75 | struct br_ip addr; |
Linus Lüssing | 2cd4143 | 2014-06-07 18:26:29 +0200 | [diff] [blame] | 76 | struct net_bridge_port __rcu *port; |
Linus Lüssing | dc4eb53 | 2014-06-07 18:26:27 +0200 | [diff] [blame] | 77 | }; |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 78 | |
| 79 | /* IGMP/MLD statistics */ |
| 80 | struct bridge_mcast_stats { |
| 81 | struct br_mcast_stats mstats; |
| 82 | struct u64_stats_sync syncp; |
| 83 | }; |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 84 | #endif |
| 85 | |
Nikolay Aleksandrov | 6dada9b | 2016-04-30 10:25:28 +0200 | [diff] [blame] | 86 | struct br_vlan_stats { |
| 87 | u64 rx_bytes; |
| 88 | u64 rx_packets; |
| 89 | u64 tx_bytes; |
| 90 | u64 tx_packets; |
| 91 | struct u64_stats_sync syncp; |
| 92 | }; |
| 93 | |
Roopa Prabhu | efa5356 | 2017-01-31 22:59:54 -0800 | [diff] [blame] | 94 | struct br_tunnel_info { |
| 95 | __be64 tunnel_id; |
| 96 | struct metadata_dst *tunnel_dst; |
| 97 | }; |
| 98 | |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 99 | /** |
| 100 | * struct net_bridge_vlan - per-vlan entry |
| 101 | * |
| 102 | * @vnode: rhashtable member |
| 103 | * @vid: VLAN id |
| 104 | * @flags: bridge vlan flags |
Nikolay Aleksandrov | 6dada9b | 2016-04-30 10:25:28 +0200 | [diff] [blame] | 105 | * @stats: per-cpu VLAN statistics |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 106 | * @br: if MASTER flag set, this points to a bridge struct |
| 107 | * @port: if MASTER flag unset, this points to a port struct |
| 108 | * @refcnt: if MASTER flag set, this is bumped for each port referencing it |
| 109 | * @brvlan: if MASTER flag unset, this points to the global per-VLAN context |
| 110 | * for this VLAN entry |
| 111 | * @vlist: sorted list of VLAN entries |
| 112 | * @rcu: used for entry destruction |
| 113 | * |
| 114 | * This structure is shared between the global per-VLAN entries contained in |
| 115 | * the bridge rhashtable and the local per-port per-VLAN entries contained in |
| 116 | * the port's rhashtable. The union entries should be interpreted depending on |
| 117 | * the entry flags that are set. |
| 118 | */ |
| 119 | struct net_bridge_vlan { |
| 120 | struct rhash_head vnode; |
Roopa Prabhu | efa5356 | 2017-01-31 22:59:54 -0800 | [diff] [blame] | 121 | struct rhash_head tnode; |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 122 | u16 vid; |
| 123 | u16 flags; |
Nikolay Aleksandrov | 6dada9b | 2016-04-30 10:25:28 +0200 | [diff] [blame] | 124 | struct br_vlan_stats __percpu *stats; |
Vlad Yasevich | 243a2e6 | 2013-02-13 12:00:09 +0000 | [diff] [blame] | 125 | union { |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 126 | struct net_bridge *br; |
| 127 | struct net_bridge_port *port; |
| 128 | }; |
| 129 | union { |
| 130 | atomic_t refcnt; |
| 131 | struct net_bridge_vlan *brvlan; |
| 132 | }; |
Roopa Prabhu | efa5356 | 2017-01-31 22:59:54 -0800 | [diff] [blame] | 133 | |
| 134 | struct br_tunnel_info tinfo; |
| 135 | |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 136 | struct list_head vlist; |
| 137 | |
Vlad Yasevich | 243a2e6 | 2013-02-13 12:00:09 +0000 | [diff] [blame] | 138 | struct rcu_head rcu; |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 139 | }; |
| 140 | |
| 141 | /** |
| 142 | * struct net_bridge_vlan_group |
| 143 | * |
| 144 | * @vlan_hash: VLAN entry rhashtable |
| 145 | * @vlan_list: sorted VLAN entry list |
| 146 | * @num_vlans: number of total VLAN entries |
Nikolay Aleksandrov | 77751ee | 2015-09-30 20:16:53 +0200 | [diff] [blame] | 147 | * @pvid: PVID VLAN id |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 148 | * |
| 149 | * IMPORTANT: Be careful when checking if there're VLAN entries using list |
| 150 | * primitives because the bridge can have entries in its list which |
| 151 | * are just for global context but not for filtering, i.e. they have |
| 152 | * the master flag set but not the brentry flag. If you have to check |
| 153 | * if there're "real" entries in the bridge please test @num_vlans |
| 154 | */ |
| 155 | struct net_bridge_vlan_group { |
| 156 | struct rhashtable vlan_hash; |
Roopa Prabhu | efa5356 | 2017-01-31 22:59:54 -0800 | [diff] [blame] | 157 | struct rhashtable tunnel_hash; |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 158 | struct list_head vlan_list; |
Vlad Yasevich | 6cbdcee | 2013-02-13 12:00:13 +0000 | [diff] [blame] | 159 | u16 num_vlans; |
Nikolay Aleksandrov | 77751ee | 2015-09-30 20:16:53 +0200 | [diff] [blame] | 160 | u16 pvid; |
Vlad Yasevich | 243a2e6 | 2013-02-13 12:00:09 +0000 | [diff] [blame] | 161 | }; |
| 162 | |
Nikolay Aleksandrov | 1214628c | 2017-02-04 18:05:08 +0100 | [diff] [blame] | 163 | struct net_bridge_fdb_entry { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | struct hlist_node hlist; |
| 165 | struct net_bridge_port *dst; |
| 166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | mac_addr addr; |
Nikolay Aleksandrov | b22fbf2 | 2015-08-27 14:19:20 -0700 | [diff] [blame] | 168 | __u16 vlan_id; |
Jiri Pirko | 93859b1 | 2014-11-28 14:34:14 +0100 | [diff] [blame] | 169 | unsigned char is_local:1, |
| 170 | is_static:1, |
Scott Feldman | cf6b8e1 | 2014-11-28 14:34:21 +0100 | [diff] [blame] | 171 | added_by_user:1, |
| 172 | added_by_external_learn:1; |
Nikolay Aleksandrov | 1214628c | 2017-02-04 18:05:08 +0100 | [diff] [blame] | 173 | |
| 174 | /* write-heavy members should not affect lookups */ |
| 175 | unsigned long updated ____cacheline_aligned_in_smp; |
| 176 | unsigned long used; |
| 177 | |
Nikolay Aleksandrov | b22fbf2 | 2015-08-27 14:19:20 -0700 | [diff] [blame] | 178 | struct rcu_head rcu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | }; |
| 180 | |
Elad Raz | 9d06b6d | 2016-02-03 09:57:05 +0100 | [diff] [blame] | 181 | #define MDB_PG_FLAGS_PERMANENT BIT(0) |
| 182 | #define MDB_PG_FLAGS_OFFLOAD BIT(1) |
| 183 | |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 184 | struct net_bridge_port_group { |
| 185 | struct net_bridge_port *port; |
Eric Dumazet | e805168 | 2010-11-15 06:38:10 +0000 | [diff] [blame] | 186 | struct net_bridge_port_group __rcu *next; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 187 | struct hlist_node mglist; |
| 188 | struct rcu_head rcu; |
| 189 | struct timer_list timer; |
YOSHIFUJI Hideaki | 8ef2a9a | 2010-04-18 12:42:07 +0900 | [diff] [blame] | 190 | struct br_ip addr; |
Elad Raz | 9d06b6d | 2016-02-03 09:57:05 +0100 | [diff] [blame] | 191 | unsigned char flags; |
Felix Fietkau | 6db6f0e | 2017-01-21 21:01:32 +0100 | [diff] [blame] | 192 | unsigned char eth_addr[ETH_ALEN]; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 193 | }; |
| 194 | |
| 195 | struct net_bridge_mdb_entry |
| 196 | { |
| 197 | struct hlist_node hlist[2]; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 198 | struct net_bridge *br; |
Eric Dumazet | e805168 | 2010-11-15 06:38:10 +0000 | [diff] [blame] | 199 | struct net_bridge_port_group __rcu *ports; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 200 | struct rcu_head rcu; |
| 201 | struct timer_list timer; |
YOSHIFUJI Hideaki | 8ef2a9a | 2010-04-18 12:42:07 +0900 | [diff] [blame] | 202 | struct br_ip addr; |
Herbert Xu | 8a87017 | 2011-02-12 01:05:42 -0800 | [diff] [blame] | 203 | bool mglist; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 204 | }; |
| 205 | |
| 206 | struct net_bridge_mdb_htable |
| 207 | { |
| 208 | struct hlist_head *mhash; |
| 209 | struct rcu_head rcu; |
| 210 | struct net_bridge_mdb_htable *old; |
| 211 | u32 size; |
| 212 | u32 max; |
| 213 | u32 secret; |
| 214 | u32 ver; |
| 215 | }; |
| 216 | |
Nikolay Aleksandrov | 1f90c7f | 2017-02-04 18:05:06 +0100 | [diff] [blame] | 217 | struct net_bridge_port { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | struct net_bridge *br; |
| 219 | struct net_device *dev; |
| 220 | struct list_head list; |
| 221 | |
Nikolay Aleksandrov | 1f90c7f | 2017-02-04 18:05:06 +0100 | [diff] [blame] | 222 | unsigned long flags; |
| 223 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 224 | struct net_bridge_vlan_group __rcu *vlgrp; |
| 225 | #endif |
| 226 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | /* STP */ |
| 228 | u8 priority; |
| 229 | u8 state; |
| 230 | u16 port_no; |
| 231 | unsigned char topology_change_ack; |
| 232 | unsigned char config_pending; |
| 233 | port_id port_id; |
| 234 | port_id designated_port; |
| 235 | bridge_id designated_root; |
| 236 | bridge_id designated_bridge; |
| 237 | u32 path_cost; |
| 238 | u32 designated_cost; |
stephen hemminger | 0c03150 | 2011-07-22 07:47:06 +0000 | [diff] [blame] | 239 | unsigned long designated_age; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | |
| 241 | struct timer_list forward_delay_timer; |
| 242 | struct timer_list hold_timer; |
| 243 | struct timer_list message_age_timer; |
| 244 | struct kobject kobj; |
| 245 | struct rcu_head rcu; |
Fischer, Anna | 3982d3d | 2009-08-13 06:55:16 +0000 | [diff] [blame] | 246 | |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 247 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
Linus Lüssing | 90010b3 | 2014-06-07 18:26:26 +0200 | [diff] [blame] | 248 | struct bridge_mcast_own_query ip4_own_query; |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 249 | #if IS_ENABLED(CONFIG_IPV6) |
Linus Lüssing | 90010b3 | 2014-06-07 18:26:26 +0200 | [diff] [blame] | 250 | struct bridge_mcast_own_query ip6_own_query; |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 251 | #endif /* IS_ENABLED(CONFIG_IPV6) */ |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 252 | unsigned char multicast_router; |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 253 | struct bridge_mcast_stats __percpu *mcast_stats; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 254 | struct timer_list multicast_router_timer; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 255 | struct hlist_head mglist; |
| 256 | struct hlist_node rlist; |
| 257 | #endif |
Simon Arlott | e0f4375 | 2010-05-10 09:31:11 +0000 | [diff] [blame] | 258 | |
| 259 | #ifdef CONFIG_SYSFS |
| 260 | char sysfs_name[IFNAMSIZ]; |
| 261 | #endif |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 262 | |
| 263 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 264 | struct netpoll *np; |
| 265 | #endif |
Ido Schimmel | 6bc506b | 2016-08-25 18:42:37 +0200 | [diff] [blame] | 266 | #ifdef CONFIG_NET_SWITCHDEV |
| 267 | int offload_fwd_mark; |
| 268 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | }; |
| 270 | |
Vlad Yasevich | e028e4b | 2014-05-16 09:59:16 -0400 | [diff] [blame] | 271 | #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK) |
Vlad Yasevich | f3a6ddf | 2014-05-16 09:59:18 -0400 | [diff] [blame] | 272 | #define br_promisc_port(p) ((p)->flags & BR_PROMISC) |
Vlad Yasevich | e028e4b | 2014-05-16 09:59:16 -0400 | [diff] [blame] | 273 | |
Jiri Pirko | f350a0a8 | 2010-06-15 06:50:45 +0000 | [diff] [blame] | 274 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
| 275 | |
stephen hemminger | b5ed54e | 2010-11-15 06:38:13 +0000 | [diff] [blame] | 276 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
| 277 | { |
Hong Zhiguo | 716ec05 | 2013-09-14 22:42:28 +0800 | [diff] [blame] | 278 | return rcu_dereference(dev->rx_handler_data); |
stephen hemminger | b5ed54e | 2010-11-15 06:38:13 +0000 | [diff] [blame] | 279 | } |
| 280 | |
Hong Zhiguo | 1fb1754 | 2013-09-14 22:42:27 +0800 | [diff] [blame] | 281 | static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) |
stephen hemminger | b5ed54e | 2010-11-15 06:38:13 +0000 | [diff] [blame] | 282 | { |
Eric Dumazet | ec1e561 | 2010-11-15 06:38:14 +0000 | [diff] [blame] | 283 | return br_port_exists(dev) ? |
| 284 | rtnl_dereference(dev->rx_handler_data) : NULL; |
stephen hemminger | b5ed54e | 2010-11-15 06:38:13 +0000 | [diff] [blame] | 285 | } |
| 286 | |
Nikolay Aleksandrov | 1f90c7f | 2017-02-04 18:05:06 +0100 | [diff] [blame] | 287 | struct net_bridge { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | spinlock_t lock; |
Nikolay Aleksandrov | 1f90c7f | 2017-02-04 18:05:06 +0100 | [diff] [blame] | 289 | spinlock_t hash_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | struct list_head port_list; |
| 291 | struct net_device *dev; |
Li RongQing | 8f84985 | 2014-01-04 13:57:59 +0800 | [diff] [blame] | 292 | struct pcpu_sw_netstats __percpu *stats; |
Nikolay Aleksandrov | 1f90c7f | 2017-02-04 18:05:06 +0100 | [diff] [blame] | 293 | /* These fields are accessed on each packet */ |
| 294 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 295 | u8 vlan_enabled; |
| 296 | u8 vlan_stats_enabled; |
| 297 | __be16 vlan_proto; |
| 298 | u16 default_pvid; |
| 299 | struct net_bridge_vlan_group __rcu *vlgrp; |
| 300 | #endif |
| 301 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | struct hlist_head hash[BR_HASH_SIZE]; |
Pablo Neira Ayuso | 34666d4 | 2014-09-18 11:29:03 +0200 | [diff] [blame] | 303 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
Bernhard Thaler | efb6de9 | 2015-05-30 15:30:16 +0200 | [diff] [blame] | 304 | union { |
| 305 | struct rtable fake_rtable; |
| 306 | struct rt6_info fake_rt6_info; |
| 307 | }; |
Patrick McHardy | 4df53d8 | 2010-07-02 09:32:57 +0200 | [diff] [blame] | 308 | bool nf_call_iptables; |
| 309 | bool nf_call_ip6tables; |
| 310 | bool nf_call_arptables; |
Simon Wunderlich | 4adf0af | 2008-07-30 16:27:55 -0700 | [diff] [blame] | 311 | #endif |
stephen hemminger | 515853c | 2011-10-03 18:14:46 +0000 | [diff] [blame] | 312 | u16 group_fwd_mask; |
Toshiaki Makita | f2808d2 | 2014-06-10 20:59:24 +0900 | [diff] [blame] | 313 | u16 group_fwd_mask_required; |
stephen hemminger | 515853c | 2011-10-03 18:14:46 +0000 | [diff] [blame] | 314 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | /* STP */ |
| 316 | bridge_id designated_root; |
| 317 | bridge_id bridge_id; |
| 318 | u32 root_path_cost; |
Nikolay Aleksandrov | 1f90c7f | 2017-02-04 18:05:06 +0100 | [diff] [blame] | 319 | unsigned char topology_change; |
| 320 | unsigned char topology_change_detected; |
| 321 | u16 root_port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | unsigned long max_age; |
| 323 | unsigned long hello_time; |
| 324 | unsigned long forward_delay; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | unsigned long ageing_time; |
Vivien Didelot | 34d8acd | 2016-12-10 13:44:29 -0500 | [diff] [blame] | 326 | unsigned long bridge_max_age; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | unsigned long bridge_hello_time; |
| 328 | unsigned long bridge_forward_delay; |
Vivien Didelot | 34d8acd | 2016-12-10 13:44:29 -0500 | [diff] [blame] | 329 | unsigned long bridge_ageing_time; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | |
Stephen Hemminger | fda93d9 | 2006-03-20 22:59:21 -0800 | [diff] [blame] | 331 | u8 group_addr[ETH_ALEN]; |
Toshiaki Makita | 204177f | 2014-06-10 20:59:25 +0900 | [diff] [blame] | 332 | bool group_addr_set; |
Stephen Hemminger | 9cde070 | 2007-03-21 14:22:44 -0700 | [diff] [blame] | 333 | |
| 334 | enum { |
| 335 | BR_NO_STP, /* no spanning tree */ |
| 336 | BR_KERNEL_STP, /* old STP in kernel */ |
| 337 | BR_USER_STP, /* new RSTP in userspace */ |
| 338 | } stp_enabled; |
| 339 | |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 340 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 341 | unsigned char multicast_router; |
| 342 | |
| 343 | u8 multicast_disabled:1; |
Herbert Xu | c5c2326 | 2012-04-13 02:37:42 +0000 | [diff] [blame] | 344 | u8 multicast_querier:1; |
Cong Wang | 1c8ad5b | 2013-05-21 21:52:54 +0000 | [diff] [blame] | 345 | u8 multicast_query_use_ifaddr:1; |
daniel | 0888d5f | 2016-06-24 12:35:18 +0200 | [diff] [blame] | 346 | u8 has_ipv6_addr:1; |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 347 | u8 multicast_stats_enabled:1; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 348 | |
| 349 | u32 hash_elasticity; |
| 350 | u32 hash_max; |
| 351 | |
| 352 | u32 multicast_last_member_count; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 353 | u32 multicast_startup_query_count; |
| 354 | |
Nikolay Aleksandrov | 5e92358 | 2016-11-21 13:03:24 +0100 | [diff] [blame] | 355 | u8 multicast_igmp_version; |
| 356 | |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 357 | unsigned long multicast_last_member_interval; |
| 358 | unsigned long multicast_membership_interval; |
| 359 | unsigned long multicast_querier_interval; |
| 360 | unsigned long multicast_query_interval; |
| 361 | unsigned long multicast_query_response_interval; |
| 362 | unsigned long multicast_startup_query_interval; |
| 363 | |
| 364 | spinlock_t multicast_lock; |
Eric Dumazet | e805168 | 2010-11-15 06:38:10 +0000 | [diff] [blame] | 365 | struct net_bridge_mdb_htable __rcu *mdb; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 366 | struct hlist_head router_list; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 367 | |
| 368 | struct timer_list multicast_router_timer; |
Linus Lüssing | 90010b3 | 2014-06-07 18:26:26 +0200 | [diff] [blame] | 369 | struct bridge_mcast_other_query ip4_other_query; |
| 370 | struct bridge_mcast_own_query ip4_own_query; |
Linus Lüssing | dc4eb53 | 2014-06-07 18:26:27 +0200 | [diff] [blame] | 371 | struct bridge_mcast_querier ip4_querier; |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 372 | struct bridge_mcast_stats __percpu *mcast_stats; |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 373 | #if IS_ENABLED(CONFIG_IPV6) |
Linus Lüssing | 90010b3 | 2014-06-07 18:26:26 +0200 | [diff] [blame] | 374 | struct bridge_mcast_other_query ip6_other_query; |
| 375 | struct bridge_mcast_own_query ip6_own_query; |
Linus Lüssing | dc4eb53 | 2014-06-07 18:26:27 +0200 | [diff] [blame] | 376 | struct bridge_mcast_querier ip6_querier; |
Nikolay Aleksandrov | aa2ae3e | 2016-11-21 13:03:25 +0100 | [diff] [blame] | 377 | u8 multicast_mld_version; |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 378 | #endif /* IS_ENABLED(CONFIG_IPV6) */ |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 379 | #endif |
| 380 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | struct timer_list hello_timer; |
| 382 | struct timer_list tcn_timer; |
| 383 | struct timer_list topology_change_timer; |
Nikolay Aleksandrov | f7cdee8 | 2017-02-04 18:05:07 +0100 | [diff] [blame] | 384 | struct delayed_work gc_work; |
Greg Kroah-Hartman | 43b98c4 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 385 | struct kobject *ifobj; |
Vlad Yasevich | e028e4b | 2014-05-16 09:59:16 -0400 | [diff] [blame] | 386 | u32 auto_cnt; |
Ido Schimmel | 6bc506b | 2016-08-25 18:42:37 +0200 | [diff] [blame] | 387 | |
| 388 | #ifdef CONFIG_NET_SWITCHDEV |
| 389 | int offload_fwd_mark; |
| 390 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | }; |
| 392 | |
Herbert Xu | 68b7c89 | 2010-02-27 19:41:40 +0000 | [diff] [blame] | 393 | struct br_input_skb_cb { |
| 394 | struct net_device *brdev; |
Herbert Xu | 93fdd47 | 2014-10-05 12:00:22 +0800 | [diff] [blame] | 395 | |
YOSHIFUJI Hideaki / 吉藤英明 | 32dec5d | 2010-03-15 21:51:18 +0000 | [diff] [blame] | 396 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 397 | int igmp; |
| 398 | int mrouters_only; |
YOSHIFUJI Hideaki / 吉藤英明 | 32dec5d | 2010-03-15 21:51:18 +0000 | [diff] [blame] | 399 | #endif |
Herbert Xu | 93fdd47 | 2014-10-05 12:00:22 +0800 | [diff] [blame] | 400 | |
Jouni Malinen | 842a9ae | 2015-03-04 12:54:21 +0200 | [diff] [blame] | 401 | bool proxyarp_replied; |
Herbert Xu | 93fdd47 | 2014-10-05 12:00:22 +0800 | [diff] [blame] | 402 | |
Vlad Yasevich | 20adfa1 | 2014-09-12 16:26:16 -0400 | [diff] [blame] | 403 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 404 | bool vlan_filtered; |
| 405 | #endif |
Ido Schimmel | 6bc506b | 2016-08-25 18:42:37 +0200 | [diff] [blame] | 406 | |
| 407 | #ifdef CONFIG_NET_SWITCHDEV |
| 408 | int offload_fwd_mark; |
| 409 | #endif |
Herbert Xu | 68b7c89 | 2010-02-27 19:41:40 +0000 | [diff] [blame] | 410 | }; |
| 411 | |
| 412 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) |
| 413 | |
YOSHIFUJI Hideaki / 吉藤英明 | 32dec5d | 2010-03-15 21:51:18 +0000 | [diff] [blame] | 414 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 415 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) |
| 416 | #else |
| 417 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) |
| 418 | #endif |
| 419 | |
stephen hemminger | 28a16c9 | 2010-05-10 09:31:09 +0000 | [diff] [blame] | 420 | #define br_printk(level, br, format, args...) \ |
| 421 | printk(level "%s: " format, (br)->dev->name, ##args) |
| 422 | |
| 423 | #define br_err(__br, format, args...) \ |
| 424 | br_printk(KERN_ERR, __br, format, ##args) |
| 425 | #define br_warn(__br, format, args...) \ |
| 426 | br_printk(KERN_WARNING, __br, format, ##args) |
| 427 | #define br_notice(__br, format, args...) \ |
| 428 | br_printk(KERN_NOTICE, __br, format, ##args) |
| 429 | #define br_info(__br, format, args...) \ |
| 430 | br_printk(KERN_INFO, __br, format, ##args) |
| 431 | |
| 432 | #define br_debug(br, format, args...) \ |
| 433 | pr_debug("%s: " format, (br)->dev->name, ##args) |
| 434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | /* called under bridge lock */ |
| 436 | static inline int br_is_root_bridge(const struct net_bridge *br) |
| 437 | { |
| 438 | return !memcmp(&br->bridge_id, &br->designated_root, 8); |
| 439 | } |
| 440 | |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 441 | /* check if a VLAN entry is global */ |
| 442 | static inline bool br_vlan_is_master(const struct net_bridge_vlan *v) |
| 443 | { |
| 444 | return v->flags & BRIDGE_VLAN_INFO_MASTER; |
| 445 | } |
| 446 | |
| 447 | /* check if a VLAN entry is used by the bridge */ |
| 448 | static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v) |
| 449 | { |
| 450 | return v->flags & BRIDGE_VLAN_INFO_BRENTRY; |
| 451 | } |
| 452 | |
Nikolay Aleksandrov | 6be144f | 2015-10-02 15:05:13 +0200 | [diff] [blame] | 453 | /* check if we should use the vlan entry, returns false if it's only context */ |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 454 | static inline bool br_vlan_should_use(const struct net_bridge_vlan *v) |
| 455 | { |
| 456 | if (br_vlan_is_master(v)) { |
| 457 | if (br_vlan_is_brentry(v)) |
| 458 | return true; |
| 459 | else |
| 460 | return false; |
| 461 | } |
| 462 | |
| 463 | return true; |
| 464 | } |
| 465 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | /* br_device.c */ |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 467 | void br_dev_setup(struct net_device *dev); |
| 468 | void br_dev_delete(struct net_device *dev, struct list_head *list); |
| 469 | netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); |
stephen hemminger | cfb478d | 2010-05-10 09:31:08 +0000 | [diff] [blame] | 470 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 471 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
| 472 | struct sk_buff *skb) |
| 473 | { |
| 474 | struct netpoll *np = p->np; |
| 475 | |
| 476 | if (np) |
| 477 | netpoll_send_skb(np, skb); |
| 478 | } |
| 479 | |
Eric W. Biederman | a8779ec | 2014-03-27 15:36:38 -0700 | [diff] [blame] | 480 | int br_netpoll_enable(struct net_bridge_port *p); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 481 | void br_netpoll_disable(struct net_bridge_port *p); |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 482 | #else |
Herbert Xu | 9f70b0f | 2010-06-15 21:43:48 -0700 | [diff] [blame] | 483 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 484 | struct sk_buff *skb) |
| 485 | { |
| 486 | } |
| 487 | |
Eric W. Biederman | a8779ec | 2014-03-27 15:36:38 -0700 | [diff] [blame] | 488 | static inline int br_netpoll_enable(struct net_bridge_port *p) |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 489 | { |
| 490 | return 0; |
| 491 | } |
| 492 | |
| 493 | static inline void br_netpoll_disable(struct net_bridge_port *p) |
| 494 | { |
| 495 | } |
stephen hemminger | cfb478d | 2010-05-10 09:31:08 +0000 | [diff] [blame] | 496 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
| 498 | /* br_fdb.c */ |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 499 | int br_fdb_init(void); |
| 500 | void br_fdb_fini(void); |
| 501 | void br_fdb_flush(struct net_bridge *br); |
Toshiaki Makita | 424bb9c | 2014-02-07 16:48:25 +0900 | [diff] [blame] | 502 | void br_fdb_find_delete_local(struct net_bridge *br, |
| 503 | const struct net_bridge_port *p, |
| 504 | const unsigned char *addr, u16 vid); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 505 | void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); |
| 506 | void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); |
Nikolay Aleksandrov | f7cdee8 | 2017-02-04 18:05:07 +0100 | [diff] [blame] | 507 | void br_fdb_cleanup(struct work_struct *work); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 508 | void br_fdb_delete_by_port(struct net_bridge *br, |
Nikolay Aleksandrov | 1ea2d02 | 2015-06-23 05:28:16 -0700 | [diff] [blame] | 509 | const struct net_bridge_port *p, u16 vid, int do_all); |
Nikolay Aleksandrov | bfd0aea | 2017-02-13 14:59:09 +0100 | [diff] [blame] | 510 | struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br, |
| 511 | const unsigned char *addr, |
| 512 | __u16 vid); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 513 | int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
| 514 | int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, |
| 515 | unsigned long off); |
| 516 | int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, |
| 517 | const unsigned char *addr, u16 vid); |
| 518 | void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, |
Toshiaki Makita | a5642ab | 2014-02-07 16:48:18 +0900 | [diff] [blame] | 519 | const unsigned char *addr, u16 vid, bool added_by_user); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 520 | |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 521 | int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], |
Jiri Pirko | f6f6424 | 2014-11-28 14:34:15 +0100 | [diff] [blame] | 522 | struct net_device *dev, const unsigned char *addr, u16 vid); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 523 | int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, |
Jiri Pirko | f6f6424 | 2014-11-28 14:34:15 +0100 | [diff] [blame] | 524 | const unsigned char *addr, u16 vid, u16 nlh_flags); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 525 | int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, |
Roopa Prabhu | d297653 | 2016-08-30 21:56:45 -0700 | [diff] [blame] | 526 | struct net_device *dev, struct net_device *fdev, int *idx); |
Vlad Yasevich | 8db24af | 2014-05-16 09:59:17 -0400 | [diff] [blame] | 527 | int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); |
| 528 | void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); |
Jiri Pirko | 3aeb661 | 2015-01-15 23:49:37 +0100 | [diff] [blame] | 529 | int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, |
| 530 | const unsigned char *addr, u16 vid); |
| 531 | int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, |
| 532 | const unsigned char *addr, u16 vid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
| 534 | /* br_forward.c */ |
Nikolay Aleksandrov | 8addd5e | 2016-08-31 15:36:51 +0200 | [diff] [blame] | 535 | enum br_pkt_type { |
| 536 | BR_PKT_UNICAST, |
| 537 | BR_PKT_MULTICAST, |
| 538 | BR_PKT_BROADCAST |
| 539 | }; |
Eric W. Biederman | 0c4b51f | 2015-09-15 20:04:18 -0500 | [diff] [blame] | 540 | int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb); |
Nikolay Aleksandrov | b35c5f6 | 2016-07-14 06:10:01 +0300 | [diff] [blame] | 541 | void br_forward(const struct net_bridge_port *to, struct sk_buff *skb, |
Nikolay Aleksandrov | 37b090e | 2016-07-14 06:10:02 +0300 | [diff] [blame] | 542 | bool local_rcv, bool local_orig); |
Eric W. Biederman | 0c4b51f | 2015-09-15 20:04:18 -0500 | [diff] [blame] | 543 | int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb); |
Nikolay Aleksandrov | 37b090e | 2016-07-14 06:10:02 +0300 | [diff] [blame] | 544 | void br_flood(struct net_bridge *br, struct sk_buff *skb, |
Nikolay Aleksandrov | 8addd5e | 2016-08-31 15:36:51 +0200 | [diff] [blame] | 545 | enum br_pkt_type pkt_type, bool local_rcv, bool local_orig); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | |
| 547 | /* br_if.c */ |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 548 | void br_port_carrier_check(struct net_bridge_port *p); |
| 549 | int br_add_bridge(struct net *net, const char *name); |
| 550 | int br_del_bridge(struct net *net, const char *name); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 551 | int br_add_if(struct net_bridge *br, struct net_device *dev); |
| 552 | int br_del_if(struct net_bridge *br, struct net_device *dev); |
| 553 | int br_min_mtu(const struct net_bridge *br); |
| 554 | netdev_features_t br_features_recompute(struct net_bridge *br, |
| 555 | netdev_features_t features); |
Vlad Yasevich | e028e4b | 2014-05-16 09:59:16 -0400 | [diff] [blame] | 556 | void br_port_flags_change(struct net_bridge_port *port, unsigned long mask); |
Vlad Yasevich | 2796d0c | 2014-05-16 09:59:20 -0400 | [diff] [blame] | 557 | void br_manage_promisc(struct net_bridge *br); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | |
| 559 | /* br_input.c */ |
Eric W. Biederman | 0c4b51f | 2015-09-15 20:04:18 -0500 | [diff] [blame] | 560 | int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 561 | rx_handler_result_t br_handle_frame(struct sk_buff **pskb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | |
Jiri Pirko | 859828c | 2013-12-05 16:27:37 +0100 | [diff] [blame] | 563 | static inline bool br_rx_handler_check_rcu(const struct net_device *dev) |
| 564 | { |
| 565 | return rcu_dereference(dev->rx_handler) == br_handle_frame; |
| 566 | } |
| 567 | |
| 568 | static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) |
| 569 | { |
| 570 | return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; |
| 571 | } |
| 572 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | /* br_ioctl.c */ |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 574 | int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| 575 | int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, |
| 576 | void __user *arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 578 | /* br_multicast.c */ |
| 579 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
Cong Wang | 2ce297f | 2012-12-10 02:15:35 +0000 | [diff] [blame] | 580 | extern unsigned int br_mdb_rehash_seq; |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 581 | int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, |
David S. Miller | 394efd1 | 2013-11-04 13:48:30 -0500 | [diff] [blame] | 582 | struct sk_buff *skb, u16 vid); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 583 | struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, |
| 584 | struct sk_buff *skb, u16 vid); |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 585 | int br_multicast_add_port(struct net_bridge_port *port); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 586 | void br_multicast_del_port(struct net_bridge_port *port); |
| 587 | void br_multicast_enable_port(struct net_bridge_port *port); |
| 588 | void br_multicast_disable_port(struct net_bridge_port *port); |
| 589 | void br_multicast_init(struct net_bridge *br); |
| 590 | void br_multicast_open(struct net_bridge *br); |
| 591 | void br_multicast_stop(struct net_bridge *br); |
Satish Ashok | e10177a | 2015-07-15 07:16:51 -0700 | [diff] [blame] | 592 | void br_multicast_dev_del(struct net_bridge *br); |
Nikolay Aleksandrov | 37b090e | 2016-07-14 06:10:02 +0300 | [diff] [blame] | 593 | void br_multicast_flood(struct net_bridge_mdb_entry *mdst, |
| 594 | struct sk_buff *skb, bool local_rcv, bool local_orig); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 595 | int br_multicast_set_router(struct net_bridge *br, unsigned long val); |
| 596 | int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val); |
| 597 | int br_multicast_toggle(struct net_bridge *br, unsigned long val); |
| 598 | int br_multicast_set_querier(struct net_bridge *br, unsigned long val); |
| 599 | int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); |
Nikolay Aleksandrov | 5e92358 | 2016-11-21 13:03:24 +0100 | [diff] [blame] | 600 | int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val); |
Nikolay Aleksandrov | aa2ae3e | 2016-11-21 13:03:25 +0100 | [diff] [blame] | 601 | #if IS_ENABLED(CONFIG_IPV6) |
| 602 | int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val); |
| 603 | #endif |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 604 | struct net_bridge_mdb_entry * |
| 605 | br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst); |
| 606 | struct net_bridge_mdb_entry * |
| 607 | br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port, |
| 608 | struct br_ip *group); |
| 609 | void br_multicast_free_pg(struct rcu_head *head); |
| 610 | struct net_bridge_port_group * |
| 611 | br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, |
| 612 | struct net_bridge_port_group __rcu *next, |
Felix Fietkau | 6db6f0e | 2017-01-21 21:01:32 +0100 | [diff] [blame] | 613 | unsigned char flags, const unsigned char *src); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 614 | void br_mdb_init(void); |
| 615 | void br_mdb_uninit(void); |
Elad Raz | 45ebcce | 2016-04-21 12:52:45 +0200 | [diff] [blame] | 616 | void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, |
| 617 | struct br_ip *group, int type, u8 flags); |
Satish Ashok | 949f1e3 | 2015-07-23 05:00:53 -0700 | [diff] [blame] | 618 | void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port, |
| 619 | int type); |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 620 | void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p, |
Nikolay Aleksandrov | a65056e | 2016-07-06 12:12:21 -0700 | [diff] [blame] | 621 | const struct sk_buff *skb, u8 type, u8 dir); |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 622 | int br_multicast_init_stats(struct net_bridge *br); |
Ido Schimmel | b6fe044 | 2017-04-10 14:59:27 +0300 | [diff] [blame] | 623 | void br_multicast_uninit_stats(struct net_bridge *br); |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 624 | void br_multicast_get_stats(const struct net_bridge *br, |
| 625 | const struct net_bridge_port *p, |
| 626 | struct br_mcast_stats *dest); |
Sridhar Samudrala | 85b3526 | 2010-03-01 09:53:04 +0000 | [diff] [blame] | 627 | |
Cong Wang | cfd5675 | 2012-12-11 22:23:08 +0000 | [diff] [blame] | 628 | #define mlock_dereference(X, br) \ |
| 629 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) |
| 630 | |
Sridhar Samudrala | 85b3526 | 2010-03-01 09:53:04 +0000 | [diff] [blame] | 631 | static inline bool br_multicast_is_router(struct net_bridge *br) |
| 632 | { |
| 633 | return br->multicast_router == 2 || |
| 634 | (br->multicast_router == 1 && |
| 635 | timer_pending(&br->multicast_router_timer)); |
| 636 | } |
Linus Lüssing | b00589a | 2013-08-01 01:06:20 +0200 | [diff] [blame] | 637 | |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 638 | static inline bool |
| 639 | __br_multicast_querier_exists(struct net_bridge *br, |
daniel | 0888d5f | 2016-06-24 12:35:18 +0200 | [diff] [blame] | 640 | struct bridge_mcast_other_query *querier, |
| 641 | const bool is_ipv6) |
Linus Lüssing | b00589a | 2013-08-01 01:06:20 +0200 | [diff] [blame] | 642 | { |
daniel | 0888d5f | 2016-06-24 12:35:18 +0200 | [diff] [blame] | 643 | bool own_querier_enabled; |
| 644 | |
| 645 | if (br->multicast_querier) { |
| 646 | if (is_ipv6 && !br->has_ipv6_addr) |
| 647 | own_querier_enabled = false; |
| 648 | else |
| 649 | own_querier_enabled = true; |
| 650 | } else { |
| 651 | own_querier_enabled = false; |
| 652 | } |
| 653 | |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 654 | return time_is_before_jiffies(querier->delay_time) && |
daniel | 0888d5f | 2016-06-24 12:35:18 +0200 | [diff] [blame] | 655 | (own_querier_enabled || timer_pending(&querier->timer)); |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 656 | } |
| 657 | |
| 658 | static inline bool br_multicast_querier_exists(struct net_bridge *br, |
| 659 | struct ethhdr *eth) |
| 660 | { |
| 661 | switch (eth->h_proto) { |
| 662 | case (htons(ETH_P_IP)): |
daniel | 0888d5f | 2016-06-24 12:35:18 +0200 | [diff] [blame] | 663 | return __br_multicast_querier_exists(br, |
| 664 | &br->ip4_other_query, false); |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 665 | #if IS_ENABLED(CONFIG_IPV6) |
| 666 | case (htons(ETH_P_IPV6)): |
daniel | 0888d5f | 2016-06-24 12:35:18 +0200 | [diff] [blame] | 667 | return __br_multicast_querier_exists(br, |
| 668 | &br->ip6_other_query, true); |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 669 | #endif |
| 670 | default: |
| 671 | return false; |
| 672 | } |
Linus Lüssing | b00589a | 2013-08-01 01:06:20 +0200 | [diff] [blame] | 673 | } |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 674 | |
| 675 | static inline int br_multicast_igmp_type(const struct sk_buff *skb) |
| 676 | { |
| 677 | return BR_INPUT_SKB_CB(skb)->igmp; |
| 678 | } |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 679 | #else |
| 680 | static inline int br_multicast_rcv(struct net_bridge *br, |
| 681 | struct net_bridge_port *port, |
Vlad Yasevich | 0649909 | 2013-10-28 15:45:07 -0400 | [diff] [blame] | 682 | struct sk_buff *skb, |
| 683 | u16 vid) |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 684 | { |
| 685 | return 0; |
| 686 | } |
| 687 | |
| 688 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, |
Cong Wang | fbca58a | 2013-03-07 03:05:33 +0000 | [diff] [blame] | 689 | struct sk_buff *skb, u16 vid) |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 690 | { |
| 691 | return NULL; |
| 692 | } |
| 693 | |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 694 | static inline int br_multicast_add_port(struct net_bridge_port *port) |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 695 | { |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 696 | return 0; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 697 | } |
| 698 | |
| 699 | static inline void br_multicast_del_port(struct net_bridge_port *port) |
| 700 | { |
| 701 | } |
| 702 | |
| 703 | static inline void br_multicast_enable_port(struct net_bridge_port *port) |
| 704 | { |
| 705 | } |
| 706 | |
| 707 | static inline void br_multicast_disable_port(struct net_bridge_port *port) |
| 708 | { |
| 709 | } |
| 710 | |
| 711 | static inline void br_multicast_init(struct net_bridge *br) |
| 712 | { |
| 713 | } |
| 714 | |
| 715 | static inline void br_multicast_open(struct net_bridge *br) |
| 716 | { |
| 717 | } |
| 718 | |
| 719 | static inline void br_multicast_stop(struct net_bridge *br) |
| 720 | { |
| 721 | } |
Herbert Xu | 5cb5e94 | 2010-02-27 19:41:46 +0000 | [diff] [blame] | 722 | |
Nikolay Aleksandrov | a7ce45a | 2015-07-20 23:03:45 +0200 | [diff] [blame] | 723 | static inline void br_multicast_dev_del(struct net_bridge *br) |
| 724 | { |
| 725 | } |
| 726 | |
Nikolay Aleksandrov | 37b090e | 2016-07-14 06:10:02 +0300 | [diff] [blame] | 727 | static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst, |
| 728 | struct sk_buff *skb, |
| 729 | bool local_rcv, bool local_orig) |
Herbert Xu | 5cb5e94 | 2010-02-27 19:41:46 +0000 | [diff] [blame] | 730 | { |
| 731 | } |
| 732 | |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 733 | static inline bool br_multicast_is_router(struct net_bridge *br) |
| 734 | { |
Sridhar Samudrala | 85b3526 | 2010-03-01 09:53:04 +0000 | [diff] [blame] | 735 | return 0; |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 736 | } |
Nikolay Aleksandrov | 37b090e | 2016-07-14 06:10:02 +0300 | [diff] [blame] | 737 | |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 738 | static inline bool br_multicast_querier_exists(struct net_bridge *br, |
| 739 | struct ethhdr *eth) |
Linus Lüssing | b00589a | 2013-08-01 01:06:20 +0200 | [diff] [blame] | 740 | { |
| 741 | return false; |
| 742 | } |
Nikolay Aleksandrov | 37b090e | 2016-07-14 06:10:02 +0300 | [diff] [blame] | 743 | |
Rami Rosen | fdb184d | 2013-01-03 13:30:43 +0200 | [diff] [blame] | 744 | static inline void br_mdb_init(void) |
| 745 | { |
| 746 | } |
Nikolay Aleksandrov | 37b090e | 2016-07-14 06:10:02 +0300 | [diff] [blame] | 747 | |
Rami Rosen | fdb184d | 2013-01-03 13:30:43 +0200 | [diff] [blame] | 748 | static inline void br_mdb_uninit(void) |
| 749 | { |
| 750 | } |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 751 | |
| 752 | static inline void br_multicast_count(struct net_bridge *br, |
| 753 | const struct net_bridge_port *p, |
Nikolay Aleksandrov | a65056e | 2016-07-06 12:12:21 -0700 | [diff] [blame] | 754 | const struct sk_buff *skb, |
| 755 | u8 type, u8 dir) |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 756 | { |
| 757 | } |
| 758 | |
| 759 | static inline int br_multicast_init_stats(struct net_bridge *br) |
| 760 | { |
| 761 | return 0; |
| 762 | } |
| 763 | |
Ido Schimmel | b6fe044 | 2017-04-10 14:59:27 +0300 | [diff] [blame] | 764 | static inline void br_multicast_uninit_stats(struct net_bridge *br) |
| 765 | { |
| 766 | } |
| 767 | |
Nikolay Aleksandrov | 1080ab9 | 2016-06-28 16:57:06 +0200 | [diff] [blame] | 768 | static inline int br_multicast_igmp_type(const struct sk_buff *skb) |
| 769 | { |
| 770 | return 0; |
| 771 | } |
Sridhar Samudrala | 85b3526 | 2010-03-01 09:53:04 +0000 | [diff] [blame] | 772 | #endif |
Herbert Xu | eb1d164 | 2010-02-27 19:41:45 +0000 | [diff] [blame] | 773 | |
Vlad Yasevich | 243a2e6 | 2013-02-13 12:00:09 +0000 | [diff] [blame] | 774 | /* br_vlan.c */ |
| 775 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
Nikolay Aleksandrov | 77751ee | 2015-09-30 20:16:53 +0200 | [diff] [blame] | 776 | bool br_allowed_ingress(const struct net_bridge *br, |
| 777 | struct net_bridge_vlan_group *vg, struct sk_buff *skb, |
| 778 | u16 *vid); |
| 779 | bool br_allowed_egress(struct net_bridge_vlan_group *vg, |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 780 | const struct sk_buff *skb); |
Toshiaki Makita | e0d7968 | 2014-05-26 15:15:53 +0900 | [diff] [blame] | 781 | bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 782 | struct sk_buff *br_handle_vlan(struct net_bridge *br, |
Roopa Prabhu | 11538d0 | 2017-01-31 22:59:55 -0800 | [diff] [blame] | 783 | const struct net_bridge_port *port, |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 784 | struct net_bridge_vlan_group *vg, |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 785 | struct sk_buff *skb); |
| 786 | int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); |
| 787 | int br_vlan_delete(struct net_bridge *br, u16 vid); |
| 788 | void br_vlan_flush(struct net_bridge *br); |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 789 | struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid); |
Toshiaki Makita | 204177f | 2014-06-10 20:59:25 +0900 | [diff] [blame] | 790 | void br_recalculate_fwd_mask(struct net_bridge *br); |
Nikolay Aleksandrov | a785403 | 2015-08-07 19:40:45 +0300 | [diff] [blame] | 791 | int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 792 | int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); |
Toshiaki Makita | d2d427b | 2015-08-27 15:32:26 +0900 | [diff] [blame] | 793 | int __br_vlan_set_proto(struct net_bridge *br, __be16 proto); |
Toshiaki Makita | 204177f | 2014-06-10 20:59:25 +0900 | [diff] [blame] | 794 | int br_vlan_set_proto(struct net_bridge *br, unsigned long val); |
Nikolay Aleksandrov | 6dada9b | 2016-04-30 10:25:28 +0200 | [diff] [blame] | 795 | int br_vlan_set_stats(struct net_bridge *br, unsigned long val); |
Vlad Yasevich | 5be5a2d | 2014-10-03 11:29:18 -0400 | [diff] [blame] | 796 | int br_vlan_init(struct net_bridge *br); |
Vlad Yasevich | 96a20d9 | 2014-10-03 11:29:16 -0400 | [diff] [blame] | 797 | int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val); |
Nikolay Aleksandrov | 0f963b7 | 2015-10-04 14:23:47 +0200 | [diff] [blame] | 798 | int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 799 | int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); |
| 800 | int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); |
| 801 | void nbp_vlan_flush(struct net_bridge_port *port); |
Vlad Yasevich | 5be5a2d | 2014-10-03 11:29:18 -0400 | [diff] [blame] | 802 | int nbp_vlan_init(struct net_bridge_port *port); |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 803 | int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask); |
Nikolay Aleksandrov | a60c090 | 2016-04-30 10:25:29 +0200 | [diff] [blame] | 804 | void br_vlan_get_stats(const struct net_bridge_vlan *v, |
| 805 | struct br_vlan_stats *stats); |
Vlad Yasevich | a37b85c | 2013-02-13 12:00:10 +0000 | [diff] [blame] | 806 | |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 807 | static inline struct net_bridge_vlan_group *br_vlan_group( |
| 808 | const struct net_bridge *br) |
Vlad Yasevich | a37b85c | 2013-02-13 12:00:10 +0000 | [diff] [blame] | 809 | { |
Nikolay Aleksandrov | 907b1e6 | 2015-10-12 21:47:02 +0200 | [diff] [blame] | 810 | return rtnl_dereference(br->vlgrp); |
Vlad Yasevich | a37b85c | 2013-02-13 12:00:10 +0000 | [diff] [blame] | 811 | } |
| 812 | |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 813 | static inline struct net_bridge_vlan_group *nbp_vlan_group( |
| 814 | const struct net_bridge_port *p) |
Vlad Yasevich | a37b85c | 2013-02-13 12:00:10 +0000 | [diff] [blame] | 815 | { |
Nikolay Aleksandrov | 907b1e6 | 2015-10-12 21:47:02 +0200 | [diff] [blame] | 816 | return rtnl_dereference(p->vlgrp); |
| 817 | } |
| 818 | |
| 819 | static inline struct net_bridge_vlan_group *br_vlan_group_rcu( |
| 820 | const struct net_bridge *br) |
| 821 | { |
| 822 | return rcu_dereference(br->vlgrp); |
| 823 | } |
| 824 | |
| 825 | static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( |
| 826 | const struct net_bridge_port *p) |
| 827 | { |
| 828 | return rcu_dereference(p->vlgrp); |
Vlad Yasevich | a37b85c | 2013-02-13 12:00:10 +0000 | [diff] [blame] | 829 | } |
| 830 | |
| 831 | /* Since bridge now depends on 8021Q module, but the time bridge sees the |
| 832 | * skb, the vlan tag will always be present if the frame was tagged. |
| 833 | */ |
| 834 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) |
| 835 | { |
| 836 | int err = 0; |
| 837 | |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 838 | if (skb_vlan_tag_present(skb)) { |
Jiri Pirko | df8a39d | 2015-01-13 17:13:44 +0100 | [diff] [blame] | 839 | *vid = skb_vlan_tag_get(skb) & VLAN_VID_MASK; |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 840 | } else { |
Vlad Yasevich | a37b85c | 2013-02-13 12:00:10 +0000 | [diff] [blame] | 841 | *vid = 0; |
| 842 | err = -EINVAL; |
| 843 | } |
| 844 | |
| 845 | return err; |
| 846 | } |
Vlad Yasevich | 7885198 | 2013-02-13 12:00:14 +0000 | [diff] [blame] | 847 | |
Nikolay Aleksandrov | 77751ee | 2015-09-30 20:16:53 +0200 | [diff] [blame] | 848 | static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) |
Vlad Yasevich | 7885198 | 2013-02-13 12:00:14 +0000 | [diff] [blame] | 849 | { |
Nikolay Aleksandrov | 77751ee | 2015-09-30 20:16:53 +0200 | [diff] [blame] | 850 | if (!vg) |
Vlad Yasevich | 5be5a2d | 2014-10-03 11:29:18 -0400 | [diff] [blame] | 851 | return 0; |
| 852 | |
Vlad Yasevich | 7885198 | 2013-02-13 12:00:14 +0000 | [diff] [blame] | 853 | smp_rmb(); |
Nikolay Aleksandrov | 77751ee | 2015-09-30 20:16:53 +0200 | [diff] [blame] | 854 | return vg->pvid; |
Vlad Yasevich | 7885198 | 2013-02-13 12:00:14 +0000 | [diff] [blame] | 855 | } |
| 856 | |
Vlad Yasevich | 2796d0c | 2014-05-16 09:59:20 -0400 | [diff] [blame] | 857 | static inline int br_vlan_enabled(struct net_bridge *br) |
| 858 | { |
| 859 | return br->vlan_enabled; |
| 860 | } |
Vlad Yasevich | 243a2e6 | 2013-02-13 12:00:09 +0000 | [diff] [blame] | 861 | #else |
Nikolay Aleksandrov | 77751ee | 2015-09-30 20:16:53 +0200 | [diff] [blame] | 862 | static inline bool br_allowed_ingress(const struct net_bridge *br, |
| 863 | struct net_bridge_vlan_group *vg, |
Vlad Yasevich | 7885198 | 2013-02-13 12:00:14 +0000 | [diff] [blame] | 864 | struct sk_buff *skb, |
| 865 | u16 *vid) |
Vlad Yasevich | a37b85c | 2013-02-13 12:00:10 +0000 | [diff] [blame] | 866 | { |
| 867 | return true; |
| 868 | } |
| 869 | |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 870 | static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg, |
Vlad Yasevich | 85f46c6 | 2013-02-13 12:00:11 +0000 | [diff] [blame] | 871 | const struct sk_buff *skb) |
| 872 | { |
| 873 | return true; |
| 874 | } |
| 875 | |
Toshiaki Makita | e0d7968 | 2014-05-26 15:15:53 +0900 | [diff] [blame] | 876 | static inline bool br_should_learn(struct net_bridge_port *p, |
| 877 | struct sk_buff *skb, u16 *vid) |
| 878 | { |
| 879 | return true; |
| 880 | } |
| 881 | |
Vlad Yasevich | 7885198 | 2013-02-13 12:00:14 +0000 | [diff] [blame] | 882 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
Roopa Prabhu | 11538d0 | 2017-01-31 22:59:55 -0800 | [diff] [blame] | 883 | const struct net_bridge_port *port, |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 884 | struct net_bridge_vlan_group *vg, |
Vlad Yasevich | 7885198 | 2013-02-13 12:00:14 +0000 | [diff] [blame] | 885 | struct sk_buff *skb) |
| 886 | { |
| 887 | return skb; |
| 888 | } |
| 889 | |
Vlad Yasevich | 552406c | 2013-02-13 12:00:15 +0000 | [diff] [blame] | 890 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
Vlad Yasevich | 243a2e6 | 2013-02-13 12:00:09 +0000 | [diff] [blame] | 891 | { |
| 892 | return -EOPNOTSUPP; |
| 893 | } |
| 894 | |
| 895 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) |
| 896 | { |
| 897 | return -EOPNOTSUPP; |
| 898 | } |
| 899 | |
| 900 | static inline void br_vlan_flush(struct net_bridge *br) |
| 901 | { |
| 902 | } |
| 903 | |
Toshiaki Makita | 204177f | 2014-06-10 20:59:25 +0900 | [diff] [blame] | 904 | static inline void br_recalculate_fwd_mask(struct net_bridge *br) |
| 905 | { |
| 906 | } |
| 907 | |
Vlad Yasevich | 5be5a2d | 2014-10-03 11:29:18 -0400 | [diff] [blame] | 908 | static inline int br_vlan_init(struct net_bridge *br) |
Toshiaki Makita | 8580e21 | 2014-06-10 20:59:23 +0900 | [diff] [blame] | 909 | { |
Vlad Yasevich | 5be5a2d | 2014-10-03 11:29:18 -0400 | [diff] [blame] | 910 | return 0; |
Toshiaki Makita | 8580e21 | 2014-06-10 20:59:23 +0900 | [diff] [blame] | 911 | } |
| 912 | |
Vlad Yasevich | 552406c | 2013-02-13 12:00:15 +0000 | [diff] [blame] | 913 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
Vlad Yasevich | 243a2e6 | 2013-02-13 12:00:09 +0000 | [diff] [blame] | 914 | { |
| 915 | return -EOPNOTSUPP; |
| 916 | } |
| 917 | |
| 918 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) |
| 919 | { |
| 920 | return -EOPNOTSUPP; |
| 921 | } |
| 922 | |
| 923 | static inline void nbp_vlan_flush(struct net_bridge_port *port) |
| 924 | { |
| 925 | } |
| 926 | |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 927 | static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, |
| 928 | u16 vid) |
Vlad Yasevich | a37b85c | 2013-02-13 12:00:10 +0000 | [diff] [blame] | 929 | { |
| 930 | return NULL; |
| 931 | } |
Vlad Yasevich | bc9a25d | 2013-02-13 12:00:19 +0000 | [diff] [blame] | 932 | |
Vlad Yasevich | 5be5a2d | 2014-10-03 11:29:18 -0400 | [diff] [blame] | 933 | static inline int nbp_vlan_init(struct net_bridge_port *port) |
| 934 | { |
| 935 | return 0; |
| 936 | } |
| 937 | |
Vlad Yasevich | 7885198 | 2013-02-13 12:00:14 +0000 | [diff] [blame] | 938 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
Vlad Yasevich | a37b85c | 2013-02-13 12:00:10 +0000 | [diff] [blame] | 939 | { |
| 940 | return 0; |
| 941 | } |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 942 | |
Nikolay Aleksandrov | 77751ee | 2015-09-30 20:16:53 +0200 | [diff] [blame] | 943 | static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) |
Vlad Yasevich | 7885198 | 2013-02-13 12:00:14 +0000 | [diff] [blame] | 944 | { |
Vlad Yasevich | 3df6bf4 | 2014-10-03 11:29:17 -0400 | [diff] [blame] | 945 | return 0; |
Vlad Yasevich | 7885198 | 2013-02-13 12:00:14 +0000 | [diff] [blame] | 946 | } |
Vlad Yasevich | 2796d0c | 2014-05-16 09:59:20 -0400 | [diff] [blame] | 947 | |
Alexei Starovoitov | d4f0e09 | 2014-05-18 10:30:28 -0700 | [diff] [blame] | 948 | static inline int br_vlan_enabled(struct net_bridge *br) |
Vlad Yasevich | 2796d0c | 2014-05-16 09:59:20 -0400 | [diff] [blame] | 949 | { |
| 950 | return 0; |
| 951 | } |
Nikolay Aleksandrov | a785403 | 2015-08-07 19:40:45 +0300 | [diff] [blame] | 952 | |
| 953 | static inline int __br_vlan_filter_toggle(struct net_bridge *br, |
| 954 | unsigned long val) |
| 955 | { |
| 956 | return -EOPNOTSUPP; |
| 957 | } |
Nikolay Aleksandrov | 2594e90 | 2015-09-25 19:00:11 +0200 | [diff] [blame] | 958 | |
| 959 | static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p, |
| 960 | u32 filter_mask) |
| 961 | { |
| 962 | return 0; |
| 963 | } |
| 964 | |
| 965 | static inline struct net_bridge_vlan_group *br_vlan_group( |
| 966 | const struct net_bridge *br) |
| 967 | { |
| 968 | return NULL; |
| 969 | } |
| 970 | |
| 971 | static inline struct net_bridge_vlan_group *nbp_vlan_group( |
| 972 | const struct net_bridge_port *p) |
| 973 | { |
| 974 | return NULL; |
| 975 | } |
Nikolay Aleksandrov | 907b1e6 | 2015-10-12 21:47:02 +0200 | [diff] [blame] | 976 | |
| 977 | static inline struct net_bridge_vlan_group *br_vlan_group_rcu( |
| 978 | const struct net_bridge *br) |
| 979 | { |
| 980 | return NULL; |
| 981 | } |
| 982 | |
| 983 | static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( |
| 984 | const struct net_bridge_port *p) |
| 985 | { |
| 986 | return NULL; |
| 987 | } |
Nikolay Aleksandrov | a60c090 | 2016-04-30 10:25:29 +0200 | [diff] [blame] | 988 | |
| 989 | static inline void br_vlan_get_stats(const struct net_bridge_vlan *v, |
| 990 | struct br_vlan_stats *stats) |
| 991 | { |
| 992 | } |
Vlad Yasevich | 243a2e6 | 2013-02-13 12:00:09 +0000 | [diff] [blame] | 993 | #endif |
| 994 | |
Pablo Neira Ayuso | 1a4ba64 | 2015-03-10 10:27:18 +0100 | [diff] [blame] | 995 | struct nf_br_ops { |
| 996 | int (*br_dev_xmit_hook)(struct sk_buff *skb); |
| 997 | }; |
| 998 | extern const struct nf_br_ops __rcu *nf_br_ops; |
| 999 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | /* br_netfilter.c */ |
Pablo Neira Ayuso | 34666d4 | 2014-09-18 11:29:03 +0200 | [diff] [blame] | 1001 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 1002 | int br_nf_core_init(void); |
| 1003 | void br_nf_core_fini(void); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 1004 | void br_netfilter_rtable_init(struct net_bridge *); |
Stephen Hemminger | c090971 | 2006-05-25 15:59:33 -0700 | [diff] [blame] | 1005 | #else |
Pablo Neira Ayuso | 34666d4 | 2014-09-18 11:29:03 +0200 | [diff] [blame] | 1006 | static inline int br_nf_core_init(void) { return 0; } |
| 1007 | static inline void br_nf_core_fini(void) {} |
Simon Wunderlich | 4adf0af | 2008-07-30 16:27:55 -0700 | [diff] [blame] | 1008 | #define br_netfilter_rtable_init(x) |
Stephen Hemminger | c090971 | 2006-05-25 15:59:33 -0700 | [diff] [blame] | 1009 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | |
| 1011 | /* br_stp.c */ |
Florian Fainelli | 775dd69 | 2014-09-30 16:13:19 -0700 | [diff] [blame] | 1012 | void br_set_state(struct net_bridge_port *p, unsigned int state); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 1013 | struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); |
| 1014 | void br_init_port(struct net_bridge_port *p); |
| 1015 | void br_become_designated_port(struct net_bridge_port *p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 1017 | void __br_set_forward_delay(struct net_bridge *br, unsigned long t); |
| 1018 | int br_set_forward_delay(struct net_bridge *br, unsigned long x); |
| 1019 | int br_set_hello_time(struct net_bridge *br, unsigned long x); |
| 1020 | int br_set_max_age(struct net_bridge *br, unsigned long x); |
Vivien Didelot | 82dd433 | 2016-12-10 13:44:27 -0500 | [diff] [blame] | 1021 | int __set_ageing_time(struct net_device *dev, unsigned long t); |
Vivien Didelot | 9e0b27f | 2016-07-21 12:42:19 -0400 | [diff] [blame] | 1022 | int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time); |
stephen hemminger | 14f98f2 | 2011-04-04 14:03:33 +0000 | [diff] [blame] | 1023 | |
| 1024 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | /* br_stp_if.c */ |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 1026 | void br_stp_enable_bridge(struct net_bridge *br); |
| 1027 | void br_stp_disable_bridge(struct net_bridge *br); |
| 1028 | void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
| 1029 | void br_stp_enable_port(struct net_bridge_port *p); |
| 1030 | void br_stp_disable_port(struct net_bridge_port *p); |
| 1031 | bool br_stp_recalculate_bridge_id(struct net_bridge *br); |
| 1032 | void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
| 1033 | void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); |
| 1034 | int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); |
| 1035 | int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); |
| 1036 | ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | |
| 1038 | /* br_stp_bpdu.c */ |
Patrick McHardy | 7c85fbf | 2008-07-05 21:25:56 -0700 | [diff] [blame] | 1039 | struct stp_proto; |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 1040 | void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, |
| 1041 | struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | |
| 1043 | /* br_stp_timer.c */ |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 1044 | void br_stp_timer_init(struct net_bridge *br); |
| 1045 | void br_stp_port_timer_init(struct net_bridge_port *p); |
| 1046 | unsigned long br_timer_value(const struct timer_list *timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | |
| 1048 | /* br.c */ |
Igor Maravić | e6373c4 | 2011-12-12 02:58:25 +0000 | [diff] [blame] | 1049 | #if IS_ENABLED(CONFIG_ATM_LANE) |
Michał Mirosław | da67829 | 2009-06-05 05:35:28 +0000 | [diff] [blame] | 1050 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
| 1051 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | |
Stephen Hemminger | 11dc1f3 | 2006-05-25 16:00:12 -0700 | [diff] [blame] | 1053 | /* br_netlink.c */ |
stephen hemminger | 149ddd8 | 2012-06-26 05:48:45 +0000 | [diff] [blame] | 1054 | extern struct rtnl_link_ops br_link_ops; |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 1055 | int br_netlink_init(void); |
| 1056 | void br_netlink_fini(void); |
| 1057 | void br_ifinfo_notify(int event, struct net_bridge_port *port); |
Roopa Prabhu | add511b | 2015-01-29 22:40:12 -0800 | [diff] [blame] | 1058 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags); |
| 1059 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags); |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 1060 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, |
Nicolas Dichtel | 46c264d | 2015-04-28 18:33:49 +0200 | [diff] [blame] | 1061 | u32 filter_mask, int nlflags); |
Stephen Hemminger | 11dc1f3 | 2006-05-25 16:00:12 -0700 | [diff] [blame] | 1062 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | #ifdef CONFIG_SYSFS |
| 1064 | /* br_sysfs_if.c */ |
Emese Revfy | 52cf25d | 2010-01-19 02:58:23 +0100 | [diff] [blame] | 1065 | extern const struct sysfs_ops brport_sysfs_ops; |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 1066 | int br_sysfs_addif(struct net_bridge_port *p); |
| 1067 | int br_sysfs_renameif(struct net_bridge_port *p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | |
| 1069 | /* br_sysfs_br.c */ |
Joe Perches | 348662a | 2013-10-18 13:48:22 -0700 | [diff] [blame] | 1070 | int br_sysfs_addbr(struct net_device *dev); |
| 1071 | void br_sysfs_delbr(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | |
| 1073 | #else |
| 1074 | |
Lee Jones | 0cb2bbb | 2012-11-03 23:02:30 +0100 | [diff] [blame] | 1075 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
| 1076 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } |
| 1077 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } |
| 1078 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | #endif /* CONFIG_SYSFS */ |
| 1080 | |
Ido Schimmel | 6bc506b | 2016-08-25 18:42:37 +0200 | [diff] [blame] | 1081 | /* br_switchdev.c */ |
| 1082 | #ifdef CONFIG_NET_SWITCHDEV |
| 1083 | int nbp_switchdev_mark_set(struct net_bridge_port *p); |
| 1084 | void nbp_switchdev_frame_mark(const struct net_bridge_port *p, |
| 1085 | struct sk_buff *skb); |
| 1086 | bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, |
| 1087 | const struct sk_buff *skb); |
| 1088 | #else |
| 1089 | static inline int nbp_switchdev_mark_set(struct net_bridge_port *p) |
| 1090 | { |
| 1091 | return 0; |
| 1092 | } |
| 1093 | |
| 1094 | static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p, |
| 1095 | struct sk_buff *skb) |
| 1096 | { |
| 1097 | } |
| 1098 | |
| 1099 | static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, |
| 1100 | const struct sk_buff *skb) |
| 1101 | { |
| 1102 | return true; |
| 1103 | } |
| 1104 | #endif /* CONFIG_NET_SWITCHDEV */ |
| 1105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | #endif |