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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 | /* * Linux ethernet bridge * * Authors: * Lennert Buytenhek <buytenh@gnu.org> * * $Id: br_private.h,v 1.7 2001/12/24 00:59:55 davem Exp $ * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef _BR_PRIVATE_H #define _BR_PRIVATE_H #include <linux/netdevice.h> #include <linux/miscdevice.h> #include <linux/if_bridge.h> #define BR_HASH_BITS 8 #define BR_HASH_SIZE (1 << BR_HASH_BITS) #define BR_HOLD_TIME (1*HZ) typedef struct bridge_id bridge_id; typedef struct mac_addr mac_addr; typedef __u16 port_id; struct bridge_id { unsigned char prio[2]; unsigned char addr[6]; }; struct mac_addr { unsigned char addr[6]; unsigned char pad[2]; }; struct net_bridge_fdb_entry { struct hlist_node hlist; struct net_bridge_port *dst; struct list_head age_list; atomic_t use_count; unsigned long ageing_timer; mac_addr addr; unsigned is_local:1; unsigned is_static:1; }; struct net_bridge_port { struct net_bridge *br; struct net_device *dev; struct list_head list; int port_no; /* STP */ port_id port_id; int state; int path_cost; bridge_id designated_root; int designated_cost; bridge_id designated_bridge; port_id designated_port; unsigned topology_change_ack:1; unsigned config_pending:1; int priority; struct timer_list forward_delay_timer; struct timer_list hold_timer; struct timer_list message_age_timer; struct rcu_head rcu; }; struct net_bridge { spinlock_t lock; struct list_head port_list; struct net_device *dev; struct net_device_stats statistics; rwlock_t hash_lock; struct hlist_head hash[BR_HASH_SIZE]; struct list_head age_list; /* STP */ bridge_id designated_root; int root_path_cost; int root_port; int max_age; int hello_time; int forward_delay; bridge_id bridge_id; int bridge_max_age; int bridge_hello_time; int bridge_forward_delay; unsigned stp_enabled:1; unsigned topology_change:1; unsigned topology_change_detected:1; struct timer_list hello_timer; struct timer_list tcn_timer; struct timer_list topology_change_timer; struct timer_list gc_timer; int ageing_time; }; extern struct notifier_block br_device_notifier; extern unsigned char bridge_ula[6]; /* called under bridge lock */ static inline int br_is_root_bridge(const struct net_bridge *br) { return !memcmp(&br->bridge_id, &br->designated_root, 8); } /* br_device.c */ extern void br_dev_setup(struct net_device *dev); extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev); /* br_fdb.c */ extern void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); extern void br_fdb_cleanup(unsigned long arg); extern void br_fdb_delete_by_port(struct net_bridge *br, struct net_bridge_port *p); extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br, unsigned char *addr); extern void br_fdb_put(struct net_bridge_fdb_entry *ent); extern int br_fdb_get_entries(struct net_bridge *br, unsigned char *_buf, int maxnum, int offset); extern void br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, const unsigned char *addr, int is_local); /* br_forward.c */ extern void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb); extern int br_dev_queue_push_xmit(struct sk_buff *skb); extern void br_forward(const struct net_bridge_port *to, struct sk_buff *skb); extern int br_forward_finish(struct sk_buff *skb); extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, int clone); extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, int clone); /* br_if.c */ extern int br_add_bridge(const char *name); extern int br_del_bridge(const char *name); extern void br_cleanup_bridges(void); extern int br_add_if(struct net_bridge *br, struct net_device *dev); extern int br_del_if(struct net_bridge *br, struct net_device *dev); extern int br_get_bridge_ifindices(int *indices, int num); extern void br_get_port_ifindices(struct net_bridge *br, int *ifindices); /* br_input.c */ extern int br_handle_frame_finish(struct sk_buff *skb); extern int br_handle_frame(struct sk_buff *skb); /* br_ioctl.c */ extern int br_ioctl(struct net_bridge *br, unsigned int cmd, unsigned long arg0, unsigned long arg1, unsigned long arg2); extern int br_ioctl_deviceless_stub(unsigned long arg); /* br_netfilter.c */ extern int br_netfilter_init(void); extern void br_netfilter_fini(void); /* br_stp.c */ extern void br_log_state(const struct net_bridge_port *p); extern struct net_bridge_port *br_get_port(struct net_bridge *br, int port_no); extern void br_init_port(struct net_bridge_port *p); extern void br_become_designated_port(struct net_bridge_port *p); /* br_stp_if.c */ extern void br_stp_enable_bridge(struct net_bridge *br); extern void br_stp_disable_bridge(struct net_bridge *br); extern void br_stp_enable_port(struct net_bridge_port *p); extern void br_stp_disable_port(struct net_bridge_port *p); extern void br_stp_recalculate_bridge_id(struct net_bridge *br); extern void br_stp_set_bridge_priority(struct net_bridge *br, int newprio); extern void br_stp_set_port_priority(struct net_bridge_port *p, int newprio); extern void br_stp_set_path_cost(struct net_bridge_port *p, int path_cost); /* br_stp_bpdu.c */ extern int br_stp_handle_bpdu(struct sk_buff *skb); /* br_stp_timer.c */ extern void br_stp_timer_init(struct net_bridge *br); extern void br_stp_port_timer_init(struct net_bridge_port *p); #endif |