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/*
* Linux ethernet bridge
*
* Authors:
* Lennert Buytenhek <buytenh@gnu.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _LINUX_IF_BRIDGE_H
#define _LINUX_IF_BRIDGE_H
#include <linux/netdevice.h>
#include <uapi/linux/if_bridge.h>
#include <linux/bitops.h>
struct br_ip {
union {
__be32 ip4;
#if IS_ENABLED(CONFIG_IPV6)
struct in6_addr ip6;
#endif
} u;
__be16 proto;
__u16 vid;
};
struct br_ip_list {
struct list_head list;
struct br_ip addr;
};
#define BR_HAIRPIN_MODE BIT(0)
#define BR_BPDU_GUARD BIT(1)
#define BR_ROOT_BLOCK BIT(2)
#define BR_MULTICAST_FAST_LEAVE BIT(3)
#define BR_ADMIN_COST BIT(4)
#define BR_LEARNING BIT(5)
#define BR_FLOOD BIT(6)
#define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING)
#define BR_PROMISC BIT(7)
#define BR_PROXYARP BIT(8)
#define BR_LEARNING_SYNC BIT(9)
#define BR_PROXYARP_WIFI BIT(10)
#define BR_MCAST_FLOOD BIT(11)
#define BR_MULTICAST_TO_UNICAST BIT(12)
#define BR_VLAN_TUNNEL BIT(13)
#define BR_BCAST_FLOOD BIT(14)
#define BR_NEIGH_SUPPRESS BIT(15)
#define BR_ISOLATED BIT(16)
#define BR_DEFAULT_AGEING_TIME (300 * HZ)
extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
typedef int br_should_route_hook_t(struct sk_buff *skb);
extern br_should_route_hook_t __rcu *br_should_route_hook;
#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
int br_multicast_list_adjacent(struct net_device *dev,
struct list_head *br_ip_list);
bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
bool br_multicast_enabled(const struct net_device *dev);
bool br_multicast_router(const struct net_device *dev);
#else
static inline int br_multicast_list_adjacent(struct net_device *dev,
struct list_head *br_ip_list)
{
return 0;
}
static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
int proto)
{
return false;
}
static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
int proto)
{
return false;
}
static inline bool br_multicast_enabled(const struct net_device *dev)
{
return false;
}
static inline bool br_multicast_router(const struct net_device *dev)
{
return false;
}
#endif
#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
bool br_vlan_enabled(const struct net_device *dev);
int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
int br_vlan_get_info(const struct net_device *dev, u16 vid,
struct bridge_vlan_info *p_vinfo);
#else
static inline bool br_vlan_enabled(const struct net_device *dev)
{
return false;
}
static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
{
return -EINVAL;
}
static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
struct bridge_vlan_info *p_vinfo)
{
return -EINVAL;
}
#endif
#if IS_ENABLED(CONFIG_BRIDGE)
struct net_device *br_fdb_find_port(const struct net_device *br_dev,
const unsigned char *addr,
__u16 vid);
void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
#else
static inline struct net_device *
br_fdb_find_port(const struct net_device *br_dev,
const unsigned char *addr,
__u16 vid)
{
return NULL;
}
static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
{
}
static inline bool
br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
{
return false;
}
#endif
#endif
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