diff options
Diffstat (limited to 'net/bridge/br_private.h')
| -rw-r--r-- | net/bridge/br_private.h | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h new file mode 100644 index 0000000..54d63f13 --- /dev/null +++ b/net/bridge/br_private.h @@ -0,0 +1,244 @@ +/* + * Linux ethernet bridge + * + * Authors: + * Lennert Buytenhek <buytenh@gnu.org> + * + * $Id: br_private.h,v 1.7 2001/12/24 00:59:55 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> + +#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) + +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; + atomic_t use_count; + unsigned long ageing_timer; + mac_addr addr; + unsigned char is_local; + unsigned char is_static; +}; + +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; +}; + +struct net_bridge +{ + spinlock_t lock; + struct list_head port_list; + struct net_device *dev; + struct net_device_stats statistics; + spinlock_t hash_lock; + struct hlist_head hash[BR_HASH_SIZE]; + struct list_head age_list; + + /* 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; + + u16 root_port; + unsigned char stp_enabled; + unsigned char topology_change; + unsigned char topology_change_detected; + + struct timer_list hello_timer; + struct timer_list tcn_timer; + struct timer_list topology_change_timer; + struct timer_list gc_timer; + struct kobject ifobj; +}; + +extern struct notifier_block br_device_notifier; +extern const unsigned char bridge_ula[6]; + +/* 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 int br_dev_xmit(struct sk_buff *skb, struct net_device *dev); + +/* br_fdb.c */ +extern void br_fdb_init(void); +extern void br_fdb_fini(void); +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, + struct net_bridge_port *p); +extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, + const unsigned char *addr); +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_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); +extern int br_forward_finish(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(const char *name); +extern int br_del_bridge(const char *name); +extern void br_cleanup_bridges(void); +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); + +/* br_input.c */ +extern int br_handle_frame_finish(struct sk_buff *skb); +extern int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb); + +/* br_ioctl.c */ +extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg); + +/* br_netfilter.c */ +extern int br_netfilter_init(void); +extern void br_netfilter_fini(void); + +/* 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_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, + 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 */ +extern int br_stp_handle_bpdu(struct sk_buff *skb); + +/* 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 */ +extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br, + unsigned char *addr); +extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent); + + +#ifdef CONFIG_SYSFS +/* br_sysfs_if.c */ +extern int br_sysfs_addif(struct net_bridge_port *p); +extern void br_sysfs_removeif(struct net_bridge_port *p); +extern void br_sysfs_freeif(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_removeif(p) do { } while(0) +#define br_sysfs_freeif(p) kfree(p) +#define br_sysfs_addbr(dev) (0) +#define br_sysfs_delbr(dev) do { } while(0) +#endif /* CONFIG_SYSFS */ + +#endif |
