net/bridge: use kobject_put to release kobject in br_add_if error path
[linux-2.6.git] / net / bridge / br_private_stp.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_STP_H
14 #define _BR_PRIVATE_STP_H
15
16 #define BPDU_TYPE_CONFIG 0
17 #define BPDU_TYPE_TCN 0x80
18
19 struct br_config_bpdu
20 {
21         unsigned        topology_change:1;
22         unsigned        topology_change_ack:1;
23         bridge_id       root;
24         int             root_path_cost;
25         bridge_id       bridge_id;
26         port_id         port_id;
27         int             message_age;
28         int             max_age;
29         int             hello_time;
30         int             forward_delay;
31 };
32
33 /* called under bridge lock */
34 static inline int br_is_designated_port(const struct net_bridge_port *p)
35 {
36         return !memcmp(&p->designated_bridge, &p->br->bridge_id, 8) &&
37                 (p->designated_port == p->port_id);
38 }
39
40
41 /* br_stp.c */
42 extern void br_become_root_bridge(struct net_bridge *br);
43 extern void br_config_bpdu_generation(struct net_bridge *);
44 extern void br_configuration_update(struct net_bridge *);
45 extern void br_port_state_selection(struct net_bridge *);
46 extern void br_received_config_bpdu(struct net_bridge_port *p, struct br_config_bpdu *bpdu);
47 extern void br_received_tcn_bpdu(struct net_bridge_port *p);
48 extern void br_transmit_config(struct net_bridge_port *p);
49 extern void br_transmit_tcn(struct net_bridge *br);
50 extern void br_topology_change_detection(struct net_bridge *br);
51
52 /* br_stp_bpdu.c */
53 extern void br_send_config_bpdu(struct net_bridge_port *, struct br_config_bpdu *);
54 extern void br_send_tcn_bpdu(struct net_bridge_port *);
55
56 #endif