br_private.h 7.4 KB

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  1. /*
  2. * Linux ethernet bridge
  3. *
  4. * Authors:
  5. * Lennert Buytenhek <buytenh@gnu.org>
  6. *
  7. * $Id: br_private.h,v 1.1.1.1 2007/06/12 07:27:14 eyryu 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. #ifndef _BR_PRIVATE_H
  15. #define _BR_PRIVATE_H
  16. #include <linux/netdevice.h>
  17. #include <linux/if_bridge.h>
  18. #define BR_HASH_BITS 8
  19. #define BR_HASH_SIZE (1 << BR_HASH_BITS)
  20. #define BR_HOLD_TIME (1*HZ)
  21. #define BR_PORT_BITS 10
  22. #define BR_MAX_PORTS (1<<BR_PORT_BITS)
  23. #define BR_VERSION "2.2"
  24. typedef struct bridge_id bridge_id;
  25. typedef struct mac_addr mac_addr;
  26. typedef __u16 port_id;
  27. struct bridge_id
  28. {
  29. unsigned char prio[2];
  30. unsigned char addr[6];
  31. };
  32. struct mac_addr
  33. {
  34. unsigned char addr[6];
  35. };
  36. struct net_bridge_fdb_entry
  37. {
  38. struct hlist_node hlist;
  39. struct net_bridge_port *dst;
  40. struct rcu_head rcu;
  41. atomic_t use_count;
  42. unsigned long ageing_timer;
  43. mac_addr addr;
  44. unsigned char is_local;
  45. unsigned char is_static;
  46. };
  47. struct net_bridge_port
  48. {
  49. struct net_bridge *br;
  50. struct net_device *dev;
  51. struct list_head list;
  52. /* STP */
  53. u8 priority;
  54. u8 state;
  55. u16 port_no;
  56. unsigned char topology_change_ack;
  57. unsigned char config_pending;
  58. port_id port_id;
  59. port_id designated_port;
  60. bridge_id designated_root;
  61. bridge_id designated_bridge;
  62. u32 path_cost;
  63. u32 designated_cost;
  64. struct timer_list forward_delay_timer;
  65. struct timer_list hold_timer;
  66. struct timer_list message_age_timer;
  67. struct kobject kobj;
  68. struct rcu_head rcu;
  69. };
  70. struct net_bridge
  71. {
  72. spinlock_t lock;
  73. struct list_head port_list;
  74. struct net_device *dev;
  75. struct net_device_stats statistics;
  76. spinlock_t hash_lock;
  77. struct hlist_head hash[BR_HASH_SIZE];
  78. struct list_head age_list;
  79. unsigned long feature_mask;
  80. /* STP */
  81. bridge_id designated_root;
  82. bridge_id bridge_id;
  83. u32 root_path_cost;
  84. unsigned long max_age;
  85. unsigned long hello_time;
  86. unsigned long forward_delay;
  87. unsigned long bridge_max_age;
  88. unsigned long ageing_time;
  89. unsigned long bridge_hello_time;
  90. unsigned long bridge_forward_delay;
  91. u8 group_addr[ETH_ALEN];
  92. u16 root_port;
  93. unsigned char stp_enabled;
  94. unsigned char topology_change;
  95. unsigned char topology_change_detected;
  96. struct timer_list hello_timer;
  97. struct timer_list tcn_timer;
  98. struct timer_list topology_change_timer;
  99. struct timer_list gc_timer;
  100. struct kobject ifobj;
  101. };
  102. extern struct notifier_block br_device_notifier;
  103. extern const u8 br_group_address[ETH_ALEN];
  104. /* called under bridge lock */
  105. static inline int br_is_root_bridge(const struct net_bridge *br)
  106. {
  107. return !memcmp(&br->bridge_id, &br->designated_root, 8);
  108. }
  109. /* br_device.c */
  110. extern void br_dev_setup(struct net_device *dev);
  111. extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
  112. /* br_fdb.c */
  113. extern void br_fdb_init(void);
  114. extern void br_fdb_fini(void);
  115. extern void br_fdb_changeaddr(struct net_bridge_port *p,
  116. const unsigned char *newaddr);
  117. extern void br_fdb_cleanup(unsigned long arg);
  118. extern void br_fdb_delete_by_port(struct net_bridge *br,
  119. const struct net_bridge_port *p, int do_all);
  120. extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
  121. const unsigned char *addr);
  122. extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
  123. unsigned char *addr);
  124. extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
  125. extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
  126. unsigned long count, unsigned long off);
  127. extern int br_fdb_insert(struct net_bridge *br,
  128. struct net_bridge_port *source,
  129. const unsigned char *addr);
  130. extern void br_fdb_update(struct net_bridge *br,
  131. struct net_bridge_port *source,
  132. const unsigned char *addr);
  133. /* br_forward.c */
  134. extern void br_deliver(const struct net_bridge_port *to,
  135. struct sk_buff *skb);
  136. extern int br_dev_queue_push_xmit(struct sk_buff *skb);
  137. extern void br_forward(const struct net_bridge_port *to,
  138. struct sk_buff *skb);
  139. extern int br_forward_finish(struct sk_buff *skb);
  140. extern void br_flood_deliver(struct net_bridge *br,
  141. struct sk_buff *skb,
  142. int clone);
  143. extern void br_flood_forward(struct net_bridge *br,
  144. struct sk_buff *skb,
  145. int clone);
  146. /* br_if.c */
  147. extern void br_port_carrier_check(struct net_bridge_port *p);
  148. extern int br_add_bridge(const char *name);
  149. extern int br_del_bridge(const char *name);
  150. extern void br_cleanup_bridges(void);
  151. extern int br_add_if(struct net_bridge *br,
  152. struct net_device *dev);
  153. extern int br_del_if(struct net_bridge *br,
  154. struct net_device *dev);
  155. extern int br_min_mtu(const struct net_bridge *br);
  156. extern void br_features_recompute(struct net_bridge *br);
  157. /* br_input.c */
  158. extern int br_handle_frame_finish(struct sk_buff *skb);
  159. extern int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb);
  160. /* br_ioctl.c */
  161. extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
  162. extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
  163. /* br_netfilter.c */
  164. #ifdef CONFIG_BRIDGE_NETFILTER
  165. extern int br_netfilter_init(void);
  166. extern void br_netfilter_fini(void);
  167. #else
  168. #define br_netfilter_init() (0)
  169. #define br_netfilter_fini() do { } while(0)
  170. #endif
  171. /* br_stp.c */
  172. extern void br_log_state(const struct net_bridge_port *p);
  173. extern struct net_bridge_port *br_get_port(struct net_bridge *br,
  174. u16 port_no);
  175. extern void br_init_port(struct net_bridge_port *p);
  176. extern void br_become_designated_port(struct net_bridge_port *p);
  177. /* br_stp_if.c */
  178. extern void br_stp_enable_bridge(struct net_bridge *br);
  179. extern void br_stp_disable_bridge(struct net_bridge *br);
  180. extern void br_stp_enable_port(struct net_bridge_port *p);
  181. extern void br_stp_disable_port(struct net_bridge_port *p);
  182. extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
  183. extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
  184. extern void br_stp_set_bridge_priority(struct net_bridge *br,
  185. u16 newprio);
  186. extern void br_stp_set_port_priority(struct net_bridge_port *p,
  187. u8 newprio);
  188. extern void br_stp_set_path_cost(struct net_bridge_port *p,
  189. u32 path_cost);
  190. extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
  191. /* br_stp_bpdu.c */
  192. extern int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
  193. struct packet_type *pt, struct net_device *orig_dev);
  194. /* br_stp_timer.c */
  195. extern void br_stp_timer_init(struct net_bridge *br);
  196. extern void br_stp_port_timer_init(struct net_bridge_port *p);
  197. extern unsigned long br_timer_value(const struct timer_list *timer);
  198. /* br.c */
  199. extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
  200. unsigned char *addr);
  201. extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);
  202. /* br_netlink.c */
  203. extern void br_netlink_init(void);
  204. extern void br_netlink_fini(void);
  205. extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
  206. #ifdef CONFIG_SYSFS
  207. /* br_sysfs_if.c */
  208. extern struct sysfs_ops brport_sysfs_ops;
  209. extern int br_sysfs_addif(struct net_bridge_port *p);
  210. /* br_sysfs_br.c */
  211. extern int br_sysfs_addbr(struct net_device *dev);
  212. extern void br_sysfs_delbr(struct net_device *dev);
  213. #else
  214. #define br_sysfs_addif(p) (0)
  215. #define br_sysfs_addbr(dev) (0)
  216. #define br_sysfs_delbr(dev) do { } while(0)
  217. #endif /* CONFIG_SYSFS */
  218. #endif