/* * Linux ethernet bridge * * Authors: * Lennert Buytenhek * * $Id: br_private.h,v 1.6.2.1 2001/12/24 00:59:27 davem Exp $ * * 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 #include #include #include "br_private_timer.h" #define BR_HASH_BITS 8 #define BR_HASH_SIZE (1 << BR_HASH_BITS) #define BR_HOLD_TIME (1*HZ) 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]; unsigned char pad[2]; }; struct net_bridge_fdb_entry { struct net_bridge_fdb_entry *next_hash; struct net_bridge_fdb_entry **pprev_hash; atomic_t use_count; mac_addr addr; struct net_bridge_port *dst; unsigned long ageing_timer; unsigned is_local:1; unsigned is_static:1; }; struct net_bridge_port { struct net_bridge_port *next; struct net_bridge *br; struct net_device *dev; int port_no; /* STP */ port_id port_id; int state; int path_cost; bridge_id designated_root; int designated_cost; bridge_id designated_bridge; port_id designated_port; unsigned topology_change_ack:1; unsigned config_pending:1; int priority; struct br_timer forward_delay_timer; struct br_timer hold_timer; struct br_timer message_age_timer; }; struct net_bridge { struct net_bridge *next; rwlock_t lock; struct net_bridge_port *port_list; struct net_device dev; struct net_device_stats statistics; rwlock_t hash_lock; struct net_bridge_fdb_entry *hash[BR_HASH_SIZE]; struct timer_list tick; /* STP */ bridge_id designated_root; int root_path_cost; int root_port; int max_age; int hello_time; int forward_delay; bridge_id bridge_id; int bridge_max_age; int bridge_hello_time; int bridge_forward_delay; unsigned stp_enabled:1; unsigned topology_change:1; unsigned topology_change_detected:1; struct br_timer hello_timer; struct br_timer tcn_timer; struct br_timer topology_change_timer; struct br_timer gc_timer; int ageing_time; int gc_interval; }; extern struct notifier_block br_device_notifier; extern unsigned char bridge_ula[6]; /* br.c */ extern void br_dec_use_count(void); extern void br_inc_use_count(void); /* br_device.c */ extern void br_dev_setup(struct net_device *dev); extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev); /* br_fdb.c */ extern void br_fdb_changeaddr(struct net_bridge_port *p, unsigned char *newaddr); extern void br_fdb_cleanup(struct net_bridge *br); extern void br_fdb_delete_by_port(struct net_bridge *br, struct net_bridge_port *p); extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br, unsigned char *addr); extern void br_fdb_put(struct net_bridge_fdb_entry *ent); extern int br_fdb_get_entries(struct net_bridge *br, unsigned char *_buf, int maxnum, int offset); extern void br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, unsigned char *addr, int is_local); /* br_forward.c */ extern void br_deliver(struct net_bridge_port *to, struct sk_buff *skb); extern void br_forward(struct net_bridge_port *to, struct sk_buff *skb); extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, int clone); extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, int clone); /* br_if.c */ extern int br_add_bridge(char *name); extern int br_del_bridge(char *name); 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_get_bridge_ifindices(int *indices, int num); extern void br_get_port_ifindices(struct net_bridge *br, int *ifindices); /* br_input.c */ extern void br_handle_frame(struct sk_buff *skb); /* br_ioctl.c */ extern void br_call_ioctl_atomic(void (*fn)(void)); extern int br_ioctl(struct net_bridge *br, unsigned int cmd, unsigned long arg0, unsigned long arg1, unsigned long arg2); extern int br_ioctl_deviceless_stub(unsigned long arg); /* br_stp.c */ extern int br_is_root_bridge(struct net_bridge *br); extern struct net_bridge_port *br_get_port(struct net_bridge *br, int port_no); extern void br_init_port(struct net_bridge_port *p); extern port_id br_make_port_id(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_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_set_bridge_priority(struct net_bridge *br, int newprio); extern void br_stp_set_port_priority(struct net_bridge_port *p, int newprio); extern void br_stp_set_path_cost(struct net_bridge_port *p, int path_cost); /* br_stp_bpdu.c */ extern void br_stp_handle_bpdu(struct sk_buff *skb); #endif