2 * Linux ethernet bridge
5 * Lennert Buytenhek <buytenh@gnu.org>
7 * $Id: br_private.h,v 1.7 2001/12/24 00:59:55 davem Exp $
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
18 #include <linux/netdevice.h>
19 #include <linux/miscdevice.h>
20 #include <linux/if_bridge.h>
22 #define BR_HASH_BITS 8
23 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
25 #define BR_HOLD_TIME (1*HZ)
27 #define BR_PORT_BITS 10
28 #define BR_MAX_PORTS (1<<BR_PORT_BITS)
30 #define BR_PORT_DEBOUNCE (HZ/10)
32 typedef struct bridge_id bridge_id;
33 typedef struct mac_addr mac_addr;
34 typedef __u16 port_id;
38 unsigned char prio[2];
39 unsigned char addr[6];
44 unsigned char addr[6];
47 struct net_bridge_fdb_entry
49 struct hlist_node hlist;
50 struct net_bridge_port *dst;
54 unsigned long ageing_timer;
56 unsigned char is_local;
57 unsigned char is_static;
60 struct net_bridge_port
62 struct net_bridge *br;
63 struct net_device *dev;
64 struct list_head list;
70 unsigned char topology_change_ack;
71 unsigned char config_pending;
73 port_id designated_port;
74 bridge_id designated_root;
75 bridge_id designated_bridge;
79 struct timer_list forward_delay_timer;
80 struct timer_list hold_timer;
81 struct timer_list message_age_timer;
83 struct work_struct carrier_check;
90 struct list_head port_list;
91 struct net_device *dev;
92 struct net_device_stats statistics;
94 struct hlist_head hash[BR_HASH_SIZE];
95 struct list_head age_list;
96 unsigned long feature_mask;
99 bridge_id designated_root;
102 unsigned long max_age;
103 unsigned long hello_time;
104 unsigned long forward_delay;
105 unsigned long bridge_max_age;
106 unsigned long ageing_time;
107 unsigned long bridge_hello_time;
108 unsigned long bridge_forward_delay;
111 unsigned char stp_enabled;
112 unsigned char topology_change;
113 unsigned char topology_change_detected;
115 struct timer_list hello_timer;
116 struct timer_list tcn_timer;
117 struct timer_list topology_change_timer;
118 struct timer_list gc_timer;
119 struct kobject ifobj;
122 extern struct notifier_block br_device_notifier;
123 extern const unsigned char bridge_ula[6];
125 /* called under bridge lock */
126 static inline int br_is_root_bridge(const struct net_bridge *br)
128 return !memcmp(&br->bridge_id, &br->designated_root, 8);
133 extern void br_dev_setup(struct net_device *dev);
134 extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
137 extern void br_fdb_init(void);
138 extern void br_fdb_fini(void);
139 extern void br_fdb_changeaddr(struct net_bridge_port *p,
140 const unsigned char *newaddr);
141 extern void br_fdb_cleanup(unsigned long arg);
142 extern void br_fdb_delete_by_port(struct net_bridge *br,
143 struct net_bridge_port *p);
144 extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
145 const unsigned char *addr);
146 extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
147 unsigned char *addr);
148 extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
149 extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
150 unsigned long count, unsigned long off);
151 extern int br_fdb_insert(struct net_bridge *br,
152 struct net_bridge_port *source,
153 const unsigned char *addr);
154 extern void br_fdb_update(struct net_bridge *br,
155 struct net_bridge_port *source,
156 const unsigned char *addr);
159 extern void br_deliver(const struct net_bridge_port *to,
160 struct sk_buff *skb);
161 extern int br_dev_queue_push_xmit(struct sk_buff *skb);
162 extern void br_forward(const struct net_bridge_port *to,
163 struct sk_buff *skb);
164 extern int br_forward_finish(struct sk_buff *skb);
165 extern void br_flood_deliver(struct net_bridge *br,
168 extern void br_flood_forward(struct net_bridge *br,
173 extern int br_add_bridge(const char *name);
174 extern int br_del_bridge(const char *name);
175 extern void br_cleanup_bridges(void);
176 extern int br_add_if(struct net_bridge *br,
177 struct net_device *dev);
178 extern int br_del_if(struct net_bridge *br,
179 struct net_device *dev);
180 extern int br_min_mtu(const struct net_bridge *br);
181 extern void br_features_recompute(struct net_bridge *br);
184 extern int br_handle_frame_finish(struct sk_buff *skb);
185 extern int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb);
188 extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
189 extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
192 extern int br_netfilter_init(void);
193 extern void br_netfilter_fini(void);
196 extern void br_log_state(const struct net_bridge_port *p);
197 extern struct net_bridge_port *br_get_port(struct net_bridge *br,
199 extern void br_init_port(struct net_bridge_port *p);
200 extern void br_become_designated_port(struct net_bridge_port *p);
203 extern void br_stp_enable_bridge(struct net_bridge *br);
204 extern void br_stp_disable_bridge(struct net_bridge *br);
205 extern void br_stp_enable_port(struct net_bridge_port *p);
206 extern void br_stp_disable_port(struct net_bridge_port *p);
207 extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
208 extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
209 extern void br_stp_set_bridge_priority(struct net_bridge *br,
211 extern void br_stp_set_port_priority(struct net_bridge_port *p,
213 extern void br_stp_set_path_cost(struct net_bridge_port *p,
215 extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
218 extern int br_stp_handle_bpdu(struct sk_buff *skb);
221 extern void br_stp_timer_init(struct net_bridge *br);
222 extern void br_stp_port_timer_init(struct net_bridge_port *p);
223 extern unsigned long br_timer_value(const struct timer_list *timer);
226 extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
227 unsigned char *addr);
228 extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);
233 extern int br_sysfs_addif(struct net_bridge_port *p);
234 extern void br_sysfs_removeif(struct net_bridge_port *p);
235 extern void br_sysfs_freeif(struct net_bridge_port *p);
238 extern int br_sysfs_addbr(struct net_device *dev);
239 extern void br_sysfs_delbr(struct net_device *dev);
243 #define br_sysfs_addif(p) (0)
244 #define br_sysfs_removeif(p) do { } while(0)
245 #define br_sysfs_freeif(p) kfree(p)
246 #define br_sysfs_addbr(dev) (0)
247 #define br_sysfs_delbr(dev) do { } while(0)
248 #endif /* CONFIG_SYSFS */