include/linux/if_bridge.h

   1 /*
   2  *      Linux ethernet bridge
   3  *
   4  *      Authors:
   5  *      Lennert Buytenhek               <buytenh@gnu.org>
   6  *
   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 #ifndef _LINUX_IF_BRIDGE_H
  13 #define _LINUX_IF_BRIDGE_H
  14
  15
  16 #include <linux/netdevice.h>
  17 #include <uapi/linux/if_bridge.h>
  18 #include <linux/bitops.h>
  19
  20 struct br_ip {
  21         union {
  22                 __be32  ip4;
  23 #if IS_ENABLED(CONFIG_IPV6)
  24                 struct in6_addr ip6;
  25 #endif
  26         } u;
  27         __be16          proto;
  28         __u16           vid;
  29 };
  30
  31 struct br_ip_list {
  32         struct list_head list;
  33         struct br_ip addr;
  34 };
  35
  36 #define BR_HAIRPIN_MODE         BIT(0)
  37 #define BR_BPDU_GUARD           BIT(1)
  38 #define BR_ROOT_BLOCK           BIT(2)
  39 #define BR_MULTICAST_FAST_LEAVE BIT(3)
  40 #define BR_ADMIN_COST           BIT(4)
  41 #define BR_LEARNING             BIT(5)
  42 #define BR_FLOOD                BIT(6)
  43 #define BR_AUTO_MASK            (BR_FLOOD | BR_LEARNING)
  44 #define BR_PROMISC              BIT(7)
  45 #define BR_PROXYARP             BIT(8)
  46 #define BR_LEARNING_SYNC        BIT(9)
  47
  48 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
  49
  50 typedef int br_should_route_hook_t(struct sk_buff *skb);
  51 extern br_should_route_hook_t __rcu *br_should_route_hook;
  52
  53 #if IS_ENABLED(CONFIG_BRIDGE)
  54 int br_fdb_external_learn_add(struct net_device *dev,
  55                               const unsigned char *addr, u16 vid);
  56 int br_fdb_external_learn_del(struct net_device *dev,
  57                               const unsigned char *addr, u16 vid);
  58 #else
  59 static inline int br_fdb_external_learn_add(struct net_device *dev,
  60                                             const unsigned char *addr, u16 vid)
  61 {
  62         return 0;
  63 }
  64 static inline int br_fdb_external_learn_del(struct net_device *dev,
  65                                             const unsigned char *addr, u16 vid)
  66 {
  67         return 0;
  68 }
  69 #endif
  70
  71 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
  72 int br_multicast_list_adjacent(struct net_device *dev,
  73                                struct list_head *br_ip_list);
  74 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
  75 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
  76 #else
  77 static inline int br_multicast_list_adjacent(struct net_device *dev,
  78                                              struct list_head *br_ip_list)
  79 {
  80         return 0;
  81 }
  82 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
  83                                                      int proto)
  84 {
  85         return false;
  86 }
  87 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
  88                                                      int proto)
  89 {
  90         return false;
  91 }
  92 #endif
  93
  94 #endif