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/if_bridge.h>
21 #define BR_HASH_BITS 8
22 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
24 #define BR_HOLD_TIME (1*HZ)
26 #define BR_PORT_BITS 10
27 #define BR_MAX_PORTS (1<<BR_PORT_BITS)
29 #define BR_VERSION "2.2"
31 typedef struct bridge_id bridge_id;
32 typedef struct mac_addr mac_addr;
33 typedef __u16 port_id;
37 unsigned char prio[2];
38 unsigned char addr[6];
43 unsigned char addr[6];
46 struct net_bridge_fdb_entry
48 struct hlist_node hlist;
49 struct net_bridge_port *dst;
53 unsigned long ageing_timer;
55 unsigned char is_local;
56 unsigned char is_static;
59 struct net_bridge_port
61 struct net_bridge *br;
62 struct net_device *dev;
63 struct list_head list;
69 unsigned char topology_change_ack;
70 unsigned char config_pending;
72 port_id designated_port;
73 bridge_id designated_root;
74 bridge_id designated_bridge;
78 struct timer_list forward_delay_timer;
79 struct timer_list hold_timer;
80 struct timer_list message_age_timer;
88 struct list_head port_list;
89 struct net_device *dev;
90 struct net_device_stats statistics;
92 struct hlist_head hash[BR_HASH_SIZE];
93 struct list_head age_list;
94 unsigned long feature_mask;
97 bridge_id designated_root;
100 unsigned long max_age;
101 unsigned long hello_time;
102 unsigned long forward_delay;
103 unsigned long bridge_max_age;
104 unsigned long ageing_time;
105 unsigned long bridge_hello_time;
106 unsigned long bridge_forward_delay;
108 u8 group_addr[ETH_ALEN];
110 unsigned char stp_enabled;
111 unsigned char topology_change;
112 unsigned char topology_change_detected;
114 struct timer_list hello_timer;
115 struct timer_list tcn_timer;
116 struct timer_list topology_change_timer;
117 struct timer_list gc_timer;
118 struct kobject ifobj;
121 extern struct notifier_block br_device_notifier;
122 extern const u8 br_group_address[ETH_ALEN];
124 /* called under bridge lock */
125 static inline int br_is_root_bridge(const struct net_bridge *br)
127 return !memcmp(&br->bridge_id, &br->designated_root, 8);
132 extern void br_dev_setup(struct net_device *dev);
133 extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
136 extern void br_fdb_init(void);
137 extern void br_fdb_fini(void);
138 extern void br_fdb_changeaddr(struct net_bridge_port *p,
139 const unsigned char *newaddr);
140 extern void br_fdb_cleanup(unsigned long arg);
141 extern void br_fdb_delete_by_port(struct net_bridge *br,
142 const struct net_bridge_port *p, int do_all);
143 extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
144 const unsigned char *addr);
145 extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
146 unsigned char *addr);
147 extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
148 extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
149 unsigned long count, unsigned long off);
150 extern int br_fdb_insert(struct net_bridge *br,
151 struct net_bridge_port *source,
152 const unsigned char *addr);
153 extern void br_fdb_update(struct net_bridge *br,
154 struct net_bridge_port *source,
155 const unsigned char *addr);
158 extern void br_deliver(const struct net_bridge_port *to,
159 struct sk_buff *skb);
160 extern int br_dev_queue_push_xmit(struct sk_buff *skb);
161 extern void br_forward(const struct net_bridge_port *to,
162 struct sk_buff *skb);
163 extern int br_forward_finish(struct sk_buff *skb);
164 extern void br_flood_deliver(struct net_bridge *br,
167 extern void br_flood_forward(struct net_bridge *br,
172 extern void br_port_carrier_check(struct net_bridge_port *p);
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 #ifdef CONFIG_BRIDGE_NETFILTER
193 extern int br_netfilter_init(void);
194 extern void br_netfilter_fini(void);
196 #define br_netfilter_init() (0)
197 #define br_netfilter_fini() do { } while(0)
201 extern void br_log_state(const struct net_bridge_port *p);
202 extern struct net_bridge_port *br_get_port(struct net_bridge *br,
204 extern void br_init_port(struct net_bridge_port *p);
205 extern void br_become_designated_port(struct net_bridge_port *p);
208 extern void br_stp_enable_bridge(struct net_bridge *br);
209 extern void br_stp_disable_bridge(struct net_bridge *br);
210 extern void br_stp_enable_port(struct net_bridge_port *p);
211 extern void br_stp_disable_port(struct net_bridge_port *p);
212 extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
213 extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
214 extern void br_stp_set_bridge_priority(struct net_bridge *br,
216 extern void br_stp_set_port_priority(struct net_bridge_port *p,
218 extern void br_stp_set_path_cost(struct net_bridge_port *p,
220 extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
223 extern int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
224 struct packet_type *pt, struct net_device *orig_dev);
227 extern void br_stp_timer_init(struct net_bridge *br);
228 extern void br_stp_port_timer_init(struct net_bridge_port *p);
229 extern unsigned long br_timer_value(const struct timer_list *timer);
232 extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
233 unsigned char *addr);
234 extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);
238 extern void br_netlink_init(void);
239 extern void br_netlink_fini(void);
240 extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
244 extern struct sysfs_ops brport_sysfs_ops;
245 extern int br_sysfs_addif(struct net_bridge_port *p);
248 extern int br_sysfs_addbr(struct net_device *dev);
249 extern void br_sysfs_delbr(struct net_device *dev);
253 #define br_sysfs_addif(p) (0)
254 #define br_sysfs_addbr(dev) (0)
255 #define br_sysfs_delbr(dev) do { } while(0)
256 #endif /* CONFIG_SYSFS */