| /* |
| * Linux ethernet bridge |
| * |
| * Authors: |
| * Lennert Buytenhek <buytenh@gnu.org> |
| * |
| * $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 <linux/netdevice.h> |
| #include <linux/miscdevice.h> |
| #include <linux/if_bridge.h> |
| #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 |
| { |
| 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 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 int br_stp_handle_bpdu(struct sk_buff *skb); |
| |
| #endif |