userapps/opensource/bridge-utils/libbridge/libbridge.h

   1 /*
   2  * Copyright (C) 2000 Lennert Buytenhek
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 #ifndef _LIBBRIDGE_H
  20 #define _LIBBRIDGE_H
  21
  22 #include <net/if.h>
  23 #include <linux/if_bridge.h>
  24
  25 struct bridge_id
  26 {
  27         unsigned char prio[2];
  28         unsigned char addr[6];
  29 };
  30
  31 struct bridge_info
  32 {
  33         struct bridge_id designated_root;
  34         struct bridge_id bridge_id;
  35         unsigned root_path_cost;
  36         struct timeval max_age;
  37         struct timeval hello_time;
  38         struct timeval forward_delay;
  39         struct timeval bridge_max_age;
  40         struct timeval bridge_hello_time;
  41         struct timeval bridge_forward_delay;
  42         u_int16_t root_port;
  43         unsigned char stp_enabled;
  44         unsigned char topology_change;
  45         unsigned char topology_change_detected;
  46         struct timeval ageing_time;
  47         struct timeval hello_timer_value;
  48         struct timeval tcn_timer_value;
  49         struct timeval topology_change_timer_value;
  50         struct timeval gc_timer_value;
  51 };
  52
  53 struct fdb_entry
  54 {
  55         u_int8_t mac_addr[6];
  56         u_int16_t port_no;
  57         unsigned char is_local;
  58         struct timeval ageing_timer_value;
  59 };
  60
  61 struct port_info
  62 {
  63         unsigned port_no;
  64         struct bridge_id designated_root;
  65         struct bridge_id designated_bridge;
  66         u_int16_t port_id;
  67         u_int16_t designated_port;
  68         u_int8_t priority;
  69         unsigned char top_change_ack;
  70         unsigned char config_pending;
  71         unsigned char state;
  72         unsigned path_cost;
  73         unsigned designated_cost;
  74         struct timeval message_age_timer_value;
  75         struct timeval forward_delay_timer_value;
  76         struct timeval hold_timer_value;
  77 };
  78
  79 extern int br_init(void);
  80 extern int br_refresh(void);
  81 extern void br_shutdown(void);
  82
  83 extern int br_foreach_bridge(int (*iterator)(const char *brname, void *),
  84                              void *arg);
  85 extern int br_foreach_port(const char *brname,
  86                            int (*iterator)(const char *brname, const char *port,
  87                                            void *arg ),
  88                            void *arg);
  89 extern const char *br_get_state_name(int state);
  90
  91 extern int br_get_bridge_info(const char *br, struct bridge_info *info);
  92 extern int br_get_port_info(const char *brname, const char *port,
  93                             struct port_info *info);
  94 extern int br_add_bridge(const char *brname);
  95 extern int br_del_bridge(const char *brname);
  96 extern int br_add_interface(const char *br, const char *dev);
  97 extern int br_del_interface(const char *br, const char *dev);
  98 extern int br_set_bridge_forward_delay(const char *br, struct timeval *tv);
  99 extern int br_set_bridge_hello_time(const char *br, struct timeval *tv);
 100 extern int br_set_bridge_max_age(const char *br, struct timeval *tv);
 101 extern int br_set_ageing_time(const char *br, struct timeval *tv);
 102 extern int br_set_stp_state(const char *br, int stp_state);
 103 extern int br_set_bridge_priority(const char *br, int bridge_priority);
 104 extern int br_set_port_priority(const char *br, const char *p,
 105                                 int port_priority);
 106 extern int br_set_path_cost(const char *br, const char *p,
 107                             int path_cost);
 108 extern int br_read_fdb(const char *br, struct fdb_entry *fdbs,
 109                        unsigned long skip, int num);
 110 #endif