netdev: convert pseudo-devices to netdev_tx_t
[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  *      This program is free software; you can redistribute it and/or
8  *      modify it under the terms of the GNU General Public License
9  *      as published by the Free Software Foundation; either version
10  *      2 of the License, or (at your option) any later version.
11  */
12
13 #ifndef _BR_PRIVATE_H
14 #define _BR_PRIVATE_H
15
16 #include <linux/netdevice.h>
17 #include <linux/if_bridge.h>
18 #include <net/route.h>
19
20 #define BR_HASH_BITS 8
21 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
22
23 #define BR_HOLD_TIME (1*HZ)
24
25 #define BR_PORT_BITS    10
26 #define BR_MAX_PORTS    (1<<BR_PORT_BITS)
27
28 #define BR_VERSION      "2.3"
29
30 /* Path to usermode spanning tree program */
31 #define BR_STP_PROG     "/sbin/bridge-stp"
32
33 typedef struct bridge_id bridge_id;
34 typedef struct mac_addr mac_addr;
35 typedef __u16 port_id;
36
37 struct bridge_id
38 {
39         unsigned char   prio[2];
40         unsigned char   addr[6];
41 };
42
43 struct mac_addr
44 {
45         unsigned char   addr[6];
46 };
47
48 struct net_bridge_fdb_entry
49 {
50         struct hlist_node               hlist;
51         struct net_bridge_port          *dst;
52
53         struct rcu_head                 rcu;
54         unsigned long                   ageing_timer;
55         mac_addr                        addr;
56         unsigned char                   is_local;
57         unsigned char                   is_static;
58 };
59
60 struct net_bridge_port
61 {
62         struct net_bridge               *br;
63         struct net_device               *dev;
64         struct list_head                list;
65
66         /* STP */
67         u8                              priority;
68         u8                              state;
69         u16                             port_no;
70         unsigned char                   topology_change_ack;
71         unsigned char                   config_pending;
72         port_id                         port_id;
73         port_id                         designated_port;
74         bridge_id                       designated_root;
75         bridge_id                       designated_bridge;
76         u32                             path_cost;
77         u32                             designated_cost;
78
79         struct timer_list               forward_delay_timer;
80         struct timer_list               hold_timer;
81         struct timer_list               message_age_timer;
82         struct kobject                  kobj;
83         struct rcu_head                 rcu;
84
85         unsigned long                   flags;
86 #define BR_HAIRPIN_MODE         0x00000001
87 };
88
89 struct net_bridge
90 {
91         spinlock_t                      lock;
92         struct list_head                port_list;
93         struct net_device               *dev;
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 #ifdef CONFIG_BRIDGE_NETFILTER
99         struct rtable                   fake_rtable;
100 #endif
101         unsigned long                   flags;
102 #define BR_SET_MAC_ADDR         0x00000001
103
104         /* STP */
105         bridge_id                       designated_root;
106         bridge_id                       bridge_id;
107         u32                             root_path_cost;
108         unsigned long                   max_age;
109         unsigned long                   hello_time;
110         unsigned long                   forward_delay;
111         unsigned long                   bridge_max_age;
112         unsigned long                   ageing_time;
113         unsigned long                   bridge_hello_time;
114         unsigned long                   bridge_forward_delay;
115
116         u8                              group_addr[ETH_ALEN];
117         u16                             root_port;
118
119         enum {
120                 BR_NO_STP,              /* no spanning tree */
121                 BR_KERNEL_STP,          /* old STP in kernel */
122                 BR_USER_STP,            /* new RSTP in userspace */
123         } stp_enabled;
124
125         unsigned char                   topology_change;
126         unsigned char                   topology_change_detected;
127
128         struct timer_list               hello_timer;
129         struct timer_list               tcn_timer;
130         struct timer_list               topology_change_timer;
131         struct timer_list               gc_timer;
132         struct kobject                  *ifobj;
133 };
134
135 extern struct notifier_block br_device_notifier;
136 extern const u8 br_group_address[ETH_ALEN];
137
138 /* called under bridge lock */
139 static inline int br_is_root_bridge(const struct net_bridge *br)
140 {
141         return !memcmp(&br->bridge_id, &br->designated_root, 8);
142 }
143
144 /* br_device.c */
145 extern void br_dev_setup(struct net_device *dev);
146 extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
147                                struct net_device *dev);
148
149 /* br_fdb.c */
150 extern int br_fdb_init(void);
151 extern void br_fdb_fini(void);
152 extern void br_fdb_flush(struct net_bridge *br);
153 extern void br_fdb_changeaddr(struct net_bridge_port *p,
154                               const unsigned char *newaddr);
155 extern void br_fdb_cleanup(unsigned long arg);
156 extern void br_fdb_delete_by_port(struct net_bridge *br,
157                                   const struct net_bridge_port *p, int do_all);
158 extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
159                                                  const unsigned char *addr);
160 extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
161 extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
162                           unsigned long count, unsigned long off);
163 extern int br_fdb_insert(struct net_bridge *br,
164                          struct net_bridge_port *source,
165                          const unsigned char *addr);
166 extern void br_fdb_update(struct net_bridge *br,
167                           struct net_bridge_port *source,
168                           const unsigned char *addr);
169
170 /* br_forward.c */
171 extern void br_deliver(const struct net_bridge_port *to,
172                 struct sk_buff *skb);
173 extern int br_dev_queue_push_xmit(struct sk_buff *skb);
174 extern void br_forward(const struct net_bridge_port *to,
175                 struct sk_buff *skb);
176 extern int br_forward_finish(struct sk_buff *skb);
177 extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb);
178 extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb);
179
180 /* br_if.c */
181 extern void br_port_carrier_check(struct net_bridge_port *p);
182 extern int br_add_bridge(struct net *net, const char *name);
183 extern int br_del_bridge(struct net *net, const char *name);
184 extern void br_net_exit(struct net *net);
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(struct net *net, 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 extern void br_netfilter_rtable_init(struct net_bridge *);
206 #else
207 #define br_netfilter_init()     (0)
208 #define br_netfilter_fini()     do { } while(0)
209 #define br_netfilter_rtable_init(x)
210 #endif
211
212 /* br_stp.c */
213 extern void br_log_state(const struct net_bridge_port *p);
214 extern struct net_bridge_port *br_get_port(struct net_bridge *br,
215                                            u16 port_no);
216 extern void br_init_port(struct net_bridge_port *p);
217 extern void br_become_designated_port(struct net_bridge_port *p);
218
219 /* br_stp_if.c */
220 extern void br_stp_enable_bridge(struct net_bridge *br);
221 extern void br_stp_disable_bridge(struct net_bridge *br);
222 extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
223 extern void br_stp_enable_port(struct net_bridge_port *p);
224 extern void br_stp_disable_port(struct net_bridge_port *p);
225 extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
226 extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
227 extern void br_stp_set_bridge_priority(struct net_bridge *br,
228                                        u16 newprio);
229 extern void br_stp_set_port_priority(struct net_bridge_port *p,
230                                      u8 newprio);
231 extern void br_stp_set_path_cost(struct net_bridge_port *p,
232                                  u32 path_cost);
233 extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
234
235 /* br_stp_bpdu.c */
236 struct stp_proto;
237 extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
238                        struct net_device *dev);
239
240 /* br_stp_timer.c */
241 extern void br_stp_timer_init(struct net_bridge *br);
242 extern void br_stp_port_timer_init(struct net_bridge_port *p);
243 extern unsigned long br_timer_value(const struct timer_list *timer);
244
245 /* br.c */
246 #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
247 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
248 #endif
249
250 /* br_netlink.c */
251 extern int br_netlink_init(void);
252 extern void br_netlink_fini(void);
253 extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
254
255 #ifdef CONFIG_SYSFS
256 /* br_sysfs_if.c */
257 extern struct sysfs_ops brport_sysfs_ops;
258 extern int br_sysfs_addif(struct net_bridge_port *p);
259
260 /* br_sysfs_br.c */
261 extern int br_sysfs_addbr(struct net_device *dev);
262 extern void br_sysfs_delbr(struct net_device *dev);
263
264 #else
265
266 #define br_sysfs_addif(p)       (0)
267 #define br_sysfs_addbr(dev)     (0)
268 #define br_sysfs_delbr(dev)     do { } while(0)
269 #endif /* CONFIG_SYSFS */
270
271 #endif