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
  19 struct br_ip {
  20         union {
  21                 __be32  ip4;
  22 #if IS_ENABLED(CONFIG_IPV6)
  23                 struct in6_addr ip6;
  24 #endif
  25         } u;
  26         __be16          proto;
  27         __u16           vid;
  28 };
  29
  30 struct br_ip_list {
  31         struct list_head list;
  32         struct br_ip addr;
  33 };
  34
  35 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
  36
  37 typedef int br_should_route_hook_t(struct sk_buff *skb);
  38 extern br_should_route_hook_t __rcu *br_should_route_hook;
  39
  40 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
  41 int br_multicast_list_adjacent(struct net_device *dev,
  42                                struct list_head *br_ip_list);
  43 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
  44 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
  45 #else
  46 static inline int br_multicast_list_adjacent(struct net_device *dev,
  47                                              struct list_head *br_ip_list)
  48 {
  49         return 0;
  50 }
  51 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
  52                                                      int proto)
  53 {
  54         return false;
  55 }
  56 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
  57                                                      int proto)
  58 {
  59         return false;
  60 }
  61 #endif
  62
  63 #endif