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 #define BR_PROXYARP_WIFI        BIT(10)
  48
  49 /* values as per ieee8021QBridgeFdbAgingTime */
  50 #define BR_MIN_AGEING_TIME      (10 * HZ)
  51 #define BR_MAX_AGEING_TIME      (1000000 * HZ)
  52
  53 #define BR_DEFAULT_AGEING_TIME  (300 * HZ)
  54
  55 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
  56
  57 typedef int br_should_route_hook_t(struct sk_buff *skb);
  58 extern br_should_route_hook_t __rcu *br_should_route_hook;
  59
  60 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
  61 int br_multicast_list_adjacent(struct net_device *dev,
  62                                struct list_head *br_ip_list);
  63 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
  64 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
  65 #else
  66 static inline int br_multicast_list_adjacent(struct net_device *dev,
  67                                              struct list_head *br_ip_list)
  68 {
  69         return 0;
  70 }
  71 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
  72                                                      int proto)
  73 {
  74         return false;
  75 }
  76 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
  77                                                      int proto)
  78 {
  79         return false;
  80 }
  81 #endif
  82
  83 #endif