[NET]: Share correct feature code between bridging and bonding
[linux-2.6.git] / net / bridge / br_private.h
1 /*
2  *      Linux ethernet bridge
3  *
4  *      Authors:
5  *      Lennert Buytenhek               <buytenh@gnu.org>
6  *
7  *      $Id: br_private.h,v 1.7 2001/12/24 00:59:55 davem Exp $
8  *
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.
13  */
14
15 #ifndef _BR_PRIVATE_H
16 #define _BR_PRIVATE_H
17
18 #include <linux/netdevice.h>
19 #include <linux/if_bridge.h>
20
21 #define BR_HASH_BITS 8
22 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
23
24 #define BR_HOLD_TIME (1*HZ)
25
26 #define BR_PORT_BITS    10
27 #define BR_MAX_PORTS    (1<<BR_PORT_BITS)
28
29 #define BR_VERSION      "2.3"
30
31 /* Path to usermode spanning tree program */
32 #define BR_STP_PROG     "/sbin/bridge-stp"
33
34 typedef struct bridge_id bridge_id;
35 typedef struct mac_addr mac_addr;
36 typedef __u16 port_id;
37
38 struct bridge_id
39 {
40         unsigned char   prio[2];
41         unsigned char   addr[6];
42 };
43
44 struct mac_addr
45 {
46         unsigned char   addr[6];
47 };
48
49 struct net_bridge_fdb_entry
50 {
51         struct hlist_node               hlist;
52         struct net_bridge_port          *dst;
53
54         struct rcu_head                 rcu;
55         atomic_t                        use_count;
56         unsigned long                   ageing_timer;
57         mac_addr                        addr;
58         unsigned char                   is_local;
59         unsigned char                   is_static;
60 };
61
62 struct net_bridge_port
63 {
64         struct net_bridge               *br;
65         struct net_device               *dev;
66         struct list_head                list;
67
68         /* STP */
69         u8                              priority;
70         u8                              state;
71         u16                             port_no;
72         unsigned char                   topology_change_ack;
73         unsigned char                   config_pending;
74         port_id                         port_id;
75         port_id                         designated_port;
76         bridge_id                       designated_root;
77         bridge_id                       designated_bridge;
78         u32                             path_cost;
79         u32                             designated_cost;
80
81         struct timer_list               forward_delay_timer;
82         struct timer_list               hold_timer;
83         struct timer_list               message_age_timer;
84         struct kobject                  kobj;
85         struct rcu_head                 rcu;
86 };
87
88 struct net_bridge
89 {
90         spinlock_t                      lock;
91         struct list_head                port_list;
92         struct net_device               *dev;
93         struct net_device_stats         statistics;
94         spinlock_t                      hash_lock;
95         struct hlist_head               hash[BR_HASH_SIZE];
96         struct list_head                age_list;
97         unsigned long                   feature_mask;
98
99         /* STP */
100         bridge_id                       designated_root;
101         bridge_id                       bridge_id;
102         u32                             root_path_cost;
103         unsigned long                   max_age;
104         unsigned long                   hello_time;
105         unsigned long                   forward_delay;
106         unsigned long                   bridge_max_age;
107         unsigned long                   ageing_time;
108         unsigned long                   bridge_hello_time;
109         unsigned long                   bridge_forward_delay;
110
111         u8                              group_addr[ETH_ALEN];
112         u16                             root_port;
113
114         enum {
115                 BR_NO_STP,              /* no spanning tree */
116                 BR_KERNEL_STP,          /* old STP in kernel */
117                 BR_USER_STP,            /* new RSTP in userspace */
118         } stp_enabled;
119
120         unsigned char                   topology_change;
121         unsigned char                   topology_change_detected;
122
123         struct timer_list               hello_timer;
124         struct timer_list               tcn_timer;
125         struct timer_list               topology_change_timer;
126         struct timer_list               gc_timer;
127         struct kobject                  ifobj;
128 };
129
130 extern struct notifier_block br_device_notifier;
131 extern const u8 br_group_address[ETH_ALEN];
132
133 /* called under bridge lock */
134 static inline int br_is_root_bridge(const struct net_bridge *br)
135 {
136         return !memcmp(&br->bridge_id, &br->designated_root, 8);
137 }
138
139 /* br_device.c */
140 extern void br_dev_setup(struct net_device *dev);
141 extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
142
143 /* br_fdb.c */
144 extern int br_fdb_init(void);
145 extern void br_fdb_fini(void);
146 extern void br_fdb_flush(struct net_bridge *br);
147 extern void br_fdb_changeaddr(struct net_bridge_port *p,
148                               const unsigned char *newaddr);
149 extern void br_fdb_cleanup(unsigned long arg);
150 extern void br_fdb_delete_by_port(struct net_bridge *br,
151                                   const struct net_bridge_port *p, int do_all);
152 extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
153                                                  const unsigned char *addr);
154 extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
155                                                unsigned char *addr);
156 extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
157 extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
158                           unsigned long count, unsigned long off);
159 extern int br_fdb_insert(struct net_bridge *br,
160                          struct net_bridge_port *source,
161                          const unsigned char *addr);
162 extern void br_fdb_update(struct net_bridge *br,
163                           struct net_bridge_port *source,
164                           const unsigned char *addr);
165
166 /* br_forward.c */
167 extern void br_deliver(const struct net_bridge_port *to,
168                 struct sk_buff *skb);
169 extern int br_dev_queue_push_xmit(struct sk_buff *skb);
170 extern void br_forward(const struct net_bridge_port *to,
171                 struct sk_buff *skb);
172 extern int br_forward_finish(struct sk_buff *skb);
173 extern void br_flood_deliver(struct net_bridge *br,
174                       struct sk_buff *skb,
175                       int clone);
176 extern void br_flood_forward(struct net_bridge *br,
177                       struct sk_buff *skb,
178                       int clone);
179
180 /* br_if.c */
181 extern void br_port_carrier_check(struct net_bridge_port *p);
182 extern int br_add_bridge(const char *name);
183 extern int br_del_bridge(const char *name);
184 extern void br_cleanup_bridges(void);
185 extern int br_add_if(struct net_bridge *br,
186               struct net_device *dev);
187 extern int br_del_if(struct net_bridge *br,
188               struct net_device *dev);
189 extern int br_min_mtu(const struct net_bridge *br);
190 extern void br_features_recompute(struct net_bridge *br);
191
192 /* br_input.c */
193 extern int br_handle_frame_finish(struct sk_buff *skb);
194 extern struct sk_buff *br_handle_frame(struct net_bridge_port *p,
195                                        struct sk_buff *skb);
196
197 /* br_ioctl.c */
198 extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
199 extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
200
201 /* br_netfilter.c */
202 #ifdef CONFIG_BRIDGE_NETFILTER
203 extern int br_netfilter_init(void);
204 extern void br_netfilter_fini(void);
205 #else
206 #define br_netfilter_init()     (0)
207 #define br_netfilter_fini()     do { } while(0)
208 #endif
209
210 /* br_stp.c */
211 extern void br_log_state(const struct net_bridge_port *p);
212 extern struct net_bridge_port *br_get_port(struct net_bridge *br,
213                                            u16 port_no);
214 extern void br_init_port(struct net_bridge_port *p);
215 extern void br_become_designated_port(struct net_bridge_port *p);
216
217 /* br_stp_if.c */
218 extern void br_stp_enable_bridge(struct net_bridge *br);
219 extern void br_stp_disable_bridge(struct net_bridge *br);
220 extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
221 extern void br_stp_enable_port(struct net_bridge_port *p);
222 extern void br_stp_disable_port(struct net_bridge_port *p);
223 extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
224 extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
225 extern void br_stp_set_bridge_priority(struct net_bridge *br,
226                                        u16 newprio);
227 extern void br_stp_set_port_priority(struct net_bridge_port *p,
228                                      u8 newprio);
229 extern void br_stp_set_path_cost(struct net_bridge_port *p,
230                                  u32 path_cost);
231 extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
232
233 /* br_stp_bpdu.c */
234 extern int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
235                       struct packet_type *pt, struct net_device *orig_dev);
236
237 /* br_stp_timer.c */
238 extern void br_stp_timer_init(struct net_bridge *br);
239 extern void br_stp_port_timer_init(struct net_bridge_port *p);
240 extern unsigned long br_timer_value(const struct timer_list *timer);
241
242 /* br.c */
243 extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
244                                                        unsigned char *addr);
245 extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);
246
247
248 /* br_netlink.c */
249 extern int br_netlink_init(void);
250 extern void br_netlink_fini(void);
251 extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
252
253 #ifdef CONFIG_SYSFS
254 /* br_sysfs_if.c */
255 extern struct sysfs_ops brport_sysfs_ops;
256 extern int br_sysfs_addif(struct net_bridge_port *p);
257
258 /* br_sysfs_br.c */
259 extern int br_sysfs_addbr(struct net_device *dev);
260 extern void br_sysfs_delbr(struct net_device *dev);
261
262 #else
263
264 #define br_sysfs_addif(p)       (0)
265 #define br_sysfs_addbr(dev)     (0)
266 #define br_sysfs_delbr(dev)     do { } while(0)
267 #endif /* CONFIG_SYSFS */
268
269 #endif