You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
448 lines
12 KiB
448 lines
12 KiB
/*
|
|
* 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 _BR_PRIVATE_H
|
|
#define _BR_PRIVATE_H
|
|
|
|
#include <linux/netdevice.h>
|
|
#include <linux/if_bridge.h>
|
|
#include <net/route.h>
|
|
|
|
#define BR_HASH_BITS 8
|
|
#define BR_HASH_SIZE (1 << BR_HASH_BITS)
|
|
|
|
#define BR_HOLD_TIME (1*HZ)
|
|
|
|
#define BR_PORT_BITS 10
|
|
#define BR_MAX_PORTS (1<<BR_PORT_BITS)
|
|
|
|
#define BR_VERSION "2.3"
|
|
|
|
/* Path to usermode spanning tree program */
|
|
#define BR_STP_PROG "/sbin/bridge-stp"
|
|
|
|
typedef struct bridge_id bridge_id;
|
|
typedef struct mac_addr mac_addr;
|
|
typedef __u16 port_id;
|
|
|
|
struct bridge_id
|
|
{
|
|
unsigned char prio[2];
|
|
unsigned char addr[6];
|
|
};
|
|
|
|
struct mac_addr
|
|
{
|
|
unsigned char addr[6];
|
|
};
|
|
|
|
struct net_bridge_fdb_entry
|
|
{
|
|
struct hlist_node hlist;
|
|
struct net_bridge_port *dst;
|
|
|
|
struct rcu_head rcu;
|
|
unsigned long ageing_timer;
|
|
mac_addr addr;
|
|
unsigned char is_local;
|
|
unsigned char is_static;
|
|
};
|
|
|
|
struct net_bridge_port_group {
|
|
struct net_bridge_port *port;
|
|
struct net_bridge_port_group *next;
|
|
struct hlist_node mglist;
|
|
struct rcu_head rcu;
|
|
struct timer_list timer;
|
|
struct timer_list query_timer;
|
|
__be32 addr;
|
|
u32 queries_sent;
|
|
};
|
|
|
|
struct net_bridge_mdb_entry
|
|
{
|
|
struct hlist_node hlist[2];
|
|
struct hlist_node mglist;
|
|
struct net_bridge *br;
|
|
struct net_bridge_port_group *ports;
|
|
struct rcu_head rcu;
|
|
struct timer_list timer;
|
|
struct timer_list query_timer;
|
|
__be32 addr;
|
|
u32 queries_sent;
|
|
};
|
|
|
|
struct net_bridge_mdb_htable
|
|
{
|
|
struct hlist_head *mhash;
|
|
struct rcu_head rcu;
|
|
struct net_bridge_mdb_htable *old;
|
|
u32 size;
|
|
u32 max;
|
|
u32 secret;
|
|
u32 ver;
|
|
};
|
|
|
|
struct net_bridge_port
|
|
{
|
|
struct net_bridge *br;
|
|
struct net_device *dev;
|
|
struct list_head list;
|
|
|
|
/* STP */
|
|
u8 priority;
|
|
u8 state;
|
|
u16 port_no;
|
|
unsigned char topology_change_ack;
|
|
unsigned char config_pending;
|
|
port_id port_id;
|
|
port_id designated_port;
|
|
bridge_id designated_root;
|
|
bridge_id designated_bridge;
|
|
u32 path_cost;
|
|
u32 designated_cost;
|
|
|
|
struct timer_list forward_delay_timer;
|
|
struct timer_list hold_timer;
|
|
struct timer_list message_age_timer;
|
|
struct kobject kobj;
|
|
struct rcu_head rcu;
|
|
|
|
unsigned long flags;
|
|
#define BR_HAIRPIN_MODE 0x00000001
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
u32 multicast_startup_queries_sent;
|
|
unsigned char multicast_router;
|
|
struct timer_list multicast_router_timer;
|
|
struct timer_list multicast_query_timer;
|
|
struct hlist_head mglist;
|
|
struct hlist_node rlist;
|
|
#endif
|
|
};
|
|
|
|
struct net_bridge
|
|
{
|
|
spinlock_t lock;
|
|
struct list_head port_list;
|
|
struct net_device *dev;
|
|
spinlock_t hash_lock;
|
|
struct hlist_head hash[BR_HASH_SIZE];
|
|
unsigned long feature_mask;
|
|
#ifdef CONFIG_BRIDGE_NETFILTER
|
|
struct rtable fake_rtable;
|
|
#endif
|
|
unsigned long flags;
|
|
#define BR_SET_MAC_ADDR 0x00000001
|
|
|
|
/* STP */
|
|
bridge_id designated_root;
|
|
bridge_id bridge_id;
|
|
u32 root_path_cost;
|
|
unsigned long max_age;
|
|
unsigned long hello_time;
|
|
unsigned long forward_delay;
|
|
unsigned long bridge_max_age;
|
|
unsigned long ageing_time;
|
|
unsigned long bridge_hello_time;
|
|
unsigned long bridge_forward_delay;
|
|
|
|
u8 group_addr[ETH_ALEN];
|
|
u16 root_port;
|
|
|
|
enum {
|
|
BR_NO_STP, /* no spanning tree */
|
|
BR_KERNEL_STP, /* old STP in kernel */
|
|
BR_USER_STP, /* new RSTP in userspace */
|
|
} stp_enabled;
|
|
|
|
unsigned char topology_change;
|
|
unsigned char topology_change_detected;
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
unsigned char multicast_router;
|
|
|
|
u8 multicast_disabled:1;
|
|
|
|
u32 hash_elasticity;
|
|
u32 hash_max;
|
|
|
|
u32 multicast_last_member_count;
|
|
u32 multicast_startup_queries_sent;
|
|
u32 multicast_startup_query_count;
|
|
|
|
unsigned long multicast_last_member_interval;
|
|
unsigned long multicast_membership_interval;
|
|
unsigned long multicast_querier_interval;
|
|
unsigned long multicast_query_interval;
|
|
unsigned long multicast_query_response_interval;
|
|
unsigned long multicast_startup_query_interval;
|
|
|
|
spinlock_t multicast_lock;
|
|
struct net_bridge_mdb_htable *mdb;
|
|
struct hlist_head router_list;
|
|
struct hlist_head mglist;
|
|
|
|
struct timer_list multicast_router_timer;
|
|
struct timer_list multicast_querier_timer;
|
|
struct timer_list multicast_query_timer;
|
|
#endif
|
|
|
|
struct timer_list hello_timer;
|
|
struct timer_list tcn_timer;
|
|
struct timer_list topology_change_timer;
|
|
struct timer_list gc_timer;
|
|
struct kobject *ifobj;
|
|
};
|
|
|
|
struct br_input_skb_cb {
|
|
struct net_device *brdev;
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
int igmp;
|
|
int mrouters_only;
|
|
#endif
|
|
};
|
|
|
|
#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
|
|
#else
|
|
# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
|
|
#endif
|
|
|
|
extern struct notifier_block br_device_notifier;
|
|
extern const u8 br_group_address[ETH_ALEN];
|
|
|
|
/* called under bridge lock */
|
|
static inline int br_is_root_bridge(const struct net_bridge *br)
|
|
{
|
|
return !memcmp(&br->bridge_id, &br->designated_root, 8);
|
|
}
|
|
|
|
/* br_device.c */
|
|
extern void br_dev_setup(struct net_device *dev);
|
|
extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
|
|
struct net_device *dev);
|
|
|
|
/* br_fdb.c */
|
|
extern int br_fdb_init(void);
|
|
extern void br_fdb_fini(void);
|
|
extern void br_fdb_flush(struct net_bridge *br);
|
|
extern void br_fdb_changeaddr(struct net_bridge_port *p,
|
|
const unsigned char *newaddr);
|
|
extern void br_fdb_cleanup(unsigned long arg);
|
|
extern void br_fdb_delete_by_port(struct net_bridge *br,
|
|
const struct net_bridge_port *p, int do_all);
|
|
extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
|
|
const unsigned char *addr);
|
|
extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
|
|
extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
|
|
unsigned long count, unsigned long off);
|
|
extern int br_fdb_insert(struct net_bridge *br,
|
|
struct net_bridge_port *source,
|
|
const unsigned char *addr);
|
|
extern void br_fdb_update(struct net_bridge *br,
|
|
struct net_bridge_port *source,
|
|
const unsigned char *addr);
|
|
|
|
/* br_forward.c */
|
|
extern void br_deliver(const struct net_bridge_port *to,
|
|
struct sk_buff *skb);
|
|
extern int br_dev_queue_push_xmit(struct sk_buff *skb);
|
|
extern void br_forward(const struct net_bridge_port *to,
|
|
struct sk_buff *skb, struct sk_buff *skb0);
|
|
extern int br_forward_finish(struct sk_buff *skb);
|
|
extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb);
|
|
extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
|
|
struct sk_buff *skb2);
|
|
|
|
/* br_if.c */
|
|
extern void br_port_carrier_check(struct net_bridge_port *p);
|
|
extern int br_add_bridge(struct net *net, const char *name);
|
|
extern int br_del_bridge(struct net *net, const char *name);
|
|
extern void br_net_exit(struct net *net);
|
|
extern int br_add_if(struct net_bridge *br,
|
|
struct net_device *dev);
|
|
extern int br_del_if(struct net_bridge *br,
|
|
struct net_device *dev);
|
|
extern int br_min_mtu(const struct net_bridge *br);
|
|
extern void br_features_recompute(struct net_bridge *br);
|
|
|
|
/* br_input.c */
|
|
extern int br_handle_frame_finish(struct sk_buff *skb);
|
|
extern struct sk_buff *br_handle_frame(struct net_bridge_port *p,
|
|
struct sk_buff *skb);
|
|
|
|
/* br_ioctl.c */
|
|
extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
|
|
extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg);
|
|
|
|
/* br_multicast.c */
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
extern int br_multicast_rcv(struct net_bridge *br,
|
|
struct net_bridge_port *port,
|
|
struct sk_buff *skb);
|
|
extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
|
|
struct sk_buff *skb);
|
|
extern void br_multicast_add_port(struct net_bridge_port *port);
|
|
extern void br_multicast_del_port(struct net_bridge_port *port);
|
|
extern void br_multicast_enable_port(struct net_bridge_port *port);
|
|
extern void br_multicast_disable_port(struct net_bridge_port *port);
|
|
extern void br_multicast_init(struct net_bridge *br);
|
|
extern void br_multicast_open(struct net_bridge *br);
|
|
extern void br_multicast_stop(struct net_bridge *br);
|
|
extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
|
|
struct sk_buff *skb);
|
|
extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
|
|
struct sk_buff *skb, struct sk_buff *skb2);
|
|
extern int br_multicast_set_router(struct net_bridge *br, unsigned long val);
|
|
extern int br_multicast_set_port_router(struct net_bridge_port *p,
|
|
unsigned long val);
|
|
extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
|
|
extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
|
|
|
|
static inline bool br_multicast_is_router(struct net_bridge *br)
|
|
{
|
|
return br->multicast_router == 2 ||
|
|
(br->multicast_router == 1 &&
|
|
timer_pending(&br->multicast_router_timer));
|
|
}
|
|
#else
|
|
static inline int br_multicast_rcv(struct net_bridge *br,
|
|
struct net_bridge_port *port,
|
|
struct sk_buff *skb)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
|
|
struct sk_buff *skb)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void br_multicast_add_port(struct net_bridge_port *port)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_del_port(struct net_bridge_port *port)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_enable_port(struct net_bridge_port *port)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_disable_port(struct net_bridge_port *port)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_init(struct net_bridge *br)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_open(struct net_bridge *br)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_stop(struct net_bridge *br)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
|
|
struct sk_buff *skb)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
|
|
struct sk_buff *skb,
|
|
struct sk_buff *skb2)
|
|
{
|
|
}
|
|
static inline bool br_multicast_is_router(struct net_bridge *br)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* br_netfilter.c */
|
|
#ifdef CONFIG_BRIDGE_NETFILTER
|
|
extern int br_netfilter_init(void);
|
|
extern void br_netfilter_fini(void);
|
|
extern void br_netfilter_rtable_init(struct net_bridge *);
|
|
#else
|
|
#define br_netfilter_init() (0)
|
|
#define br_netfilter_fini() do { } while(0)
|
|
#define br_netfilter_rtable_init(x)
|
|
#endif
|
|
|
|
/* br_stp.c */
|
|
extern void br_log_state(const struct net_bridge_port *p);
|
|
extern struct net_bridge_port *br_get_port(struct net_bridge *br,
|
|
u16 port_no);
|
|
extern void br_init_port(struct net_bridge_port *p);
|
|
extern void br_become_designated_port(struct net_bridge_port *p);
|
|
|
|
/* br_stp_if.c */
|
|
extern void br_stp_enable_bridge(struct net_bridge *br);
|
|
extern void br_stp_disable_bridge(struct net_bridge *br);
|
|
extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
|
|
extern void br_stp_enable_port(struct net_bridge_port *p);
|
|
extern void br_stp_disable_port(struct net_bridge_port *p);
|
|
extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
|
|
extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
|
|
extern void br_stp_set_bridge_priority(struct net_bridge *br,
|
|
u16 newprio);
|
|
extern void br_stp_set_port_priority(struct net_bridge_port *p,
|
|
u8 newprio);
|
|
extern void br_stp_set_path_cost(struct net_bridge_port *p,
|
|
u32 path_cost);
|
|
extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
|
|
|
|
/* br_stp_bpdu.c */
|
|
struct stp_proto;
|
|
extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
|
|
struct net_device *dev);
|
|
|
|
/* br_stp_timer.c */
|
|
extern void br_stp_timer_init(struct net_bridge *br);
|
|
extern void br_stp_port_timer_init(struct net_bridge_port *p);
|
|
extern unsigned long br_timer_value(const struct timer_list *timer);
|
|
|
|
/* br.c */
|
|
#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
|
|
extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
|
|
#endif
|
|
|
|
/* br_netlink.c */
|
|
extern int br_netlink_init(void);
|
|
extern void br_netlink_fini(void);
|
|
extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
|
|
|
|
#ifdef CONFIG_SYSFS
|
|
/* br_sysfs_if.c */
|
|
extern const struct sysfs_ops brport_sysfs_ops;
|
|
extern int br_sysfs_addif(struct net_bridge_port *p);
|
|
|
|
/* br_sysfs_br.c */
|
|
extern int br_sysfs_addbr(struct net_device *dev);
|
|
extern void br_sysfs_delbr(struct net_device *dev);
|
|
|
|
#else
|
|
|
|
#define br_sysfs_addif(p) (0)
|
|
#define br_sysfs_addbr(dev) (0)
|
|
#define br_sysfs_delbr(dev) do { } while(0)
|
|
#endif /* CONFIG_SYSFS */
|
|
|
|
#endif
|
|
|