kernel/linux/net/bridge/br_private.h

   1 /*
   2  *      Linux ethernet bridge
   3  *
   4  *      Authors:
   5  *      Lennert Buytenhek               <buytenh@gnu.org>
   6  *
   7  *      $Id: br_private.h,v 1.7 2001/12/24 00:59:55 davem 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
  15 #ifndef _BR_PRIVATE_H
  16 #define _BR_PRIVATE_H
  17
  18 #include <linux/netdevice.h>
  19 #include <linux/miscdevice.h>
  20 #include <linux/if_bridge.h>
  21
  22 #define BR_HASH_BITS 8
  23 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
  24
  25 #define BR_HOLD_TIME (1*HZ)
  26
  27 #define BR_PORT_BITS    10
  28 #define BR_MAX_PORTS    (1<<BR_PORT_BITS)
  29
  30 #if defined(CONFIG_MIPS_BRCM)
  31 #define TIMER_CHECK_TIMEOUT 10
  32 #define QUERY_TIMEOUT 130
  33 //#define QUERY_TIMEOUT 60
  34 #endif
  35
  36 typedef struct bridge_id bridge_id;
  37 typedef struct mac_addr mac_addr;
  38 typedef __u16 port_id;
  39
  40 struct bridge_id
  41 {
  42         unsigned char   prio[2];
  43         unsigned char   addr[6];
  44 };
  45
  46 struct mac_addr
  47 {
  48         unsigned char   addr[6];
  49 };
  50
  51 #if defined(CONFIG_MIPS_BRCM)
  52 struct net_bridge_mc_fdb_entry
  53 {
  54         struct net_bridge_port          *dst;
  55         mac_addr                        addr;
  56         mac_addr                        host;
  57         unsigned char                   is_local;
  58         unsigned char                   is_static;
  59         unsigned long                   tstamp;
  60         struct list_head                list;
  61 };
  62
  63 struct net_bridge_fdb_entry
  64 {
  65         struct hlist_node               hlist;
  66         struct net_bridge_port          *dst;
  67         union {
  68                 struct list_head        age_list;
  69                 struct rcu_head         rcu;
  70         } u;
  71         atomic_t                        use_count;
  72         unsigned long                   ageing_timer;
  73         mac_addr                        addr;
  74         unsigned char                   is_local;
  75         unsigned char                   is_static;
  76 };
  77 #endif
  78
  79 struct net_bridge_port
  80 {
  81         struct net_bridge               *br;
  82         struct net_device               *dev;
  83         struct list_head                list;
  84
  85         /* STP */
  86         u8                              priority;
  87         u8                              state;
  88         u16                             port_no;
  89         unsigned char                   topology_change_ack;
  90         unsigned char                   config_pending;
  91         port_id                         port_id;
  92         port_id                         designated_port;
  93         bridge_id                       designated_root;
  94         bridge_id                       designated_bridge;
  95         u32                             path_cost;
  96         u32                             designated_cost;
  97 #if defined(CONFIG_MIPS_BRCM)
  98         int                             dirty;
  99 #endif
 100
 101         struct timer_list               forward_delay_timer;
 102         struct timer_list               hold_timer;
 103         struct timer_list               message_age_timer;
 104         struct kobject                  kobj;
 105         struct rcu_head                 rcu;
 106 };
 107
 108 struct net_bridge
 109 {
 110         spinlock_t                      lock;
 111         struct list_head                port_list;
 112         struct net_device               *dev;
 113         struct net_device_stats         statistics;
 114         spinlock_t                      hash_lock;
 115         struct hlist_head               hash[BR_HASH_SIZE];
 116         struct list_head                age_list;
 117
 118 #if defined(CONFIG_MIPS_BRCM)
 119         struct list_head                mc_list;
 120         struct timer_list               igmp_timer;
 121         int                             proxy;
 122         spinlock_t                      mcl_lock;
 123         int                             start_timer;
 124 #endif
 125
 126         /* STP */
 127         bridge_id                       designated_root;
 128         bridge_id                       bridge_id;
 129         u32                             root_path_cost;
 130         unsigned long                   max_age;
 131         unsigned long                   hello_time;
 132         unsigned long                   forward_delay;
 133         unsigned long                   bridge_max_age;
 134         unsigned long                   ageing_time;
 135         unsigned long                   bridge_hello_time;
 136         unsigned long                   bridge_forward_delay;
 137
 138         u16                             root_port;
 139         unsigned char                   stp_enabled;
 140         unsigned char                   topology_change;
 141         unsigned char                   topology_change_detected;
 142
 143         struct timer_list               hello_timer;
 144         struct timer_list               tcn_timer;
 145         struct timer_list               topology_change_timer;
 146         struct timer_list               gc_timer;
 147         struct kobject                  ifobj;
 148 };
 149
 150 extern struct notifier_block br_device_notifier;
 151 extern const unsigned char bridge_ula[6];
 152
 153 /* called under bridge lock */
 154 static inline int br_is_root_bridge(const struct net_bridge *br)
 155 {
 156         return !memcmp(&br->bridge_id, &br->designated_root, 8);
 157 }
 158
 159
 160 /* br_device.c */
 161 extern void br_dev_setup(struct net_device *dev);
 162 extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
 163
 164 /* br_fdb.c */
 165 extern void br_fdb_init(void);
 166 extern void br_fdb_fini(void);
 167 extern void br_fdb_changeaddr(struct net_bridge_port *p,
 168                               const unsigned char *newaddr);
 169 extern void br_fdb_cleanup(unsigned long arg);
 170 extern void br_fdb_delete_by_port(struct net_bridge *br,
 171                            struct net_bridge_port *p);
 172 extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
 173                                                  const unsigned char *addr);
 174 extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
 175                                                unsigned char *addr);
 176 extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
 177 extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
 178                           unsigned long count, unsigned long off);
 179 extern int br_fdb_insert(struct net_bridge *br,
 180                          struct net_bridge_port *source,
 181                          const unsigned char *addr,
 182                          int is_local);
 183
 184 /* br_forward.c */
 185 extern void br_deliver(const struct net_bridge_port *to,
 186                 struct sk_buff *skb);
 187 extern int br_dev_queue_push_xmit(struct sk_buff *skb);
 188 extern void br_forward(const struct net_bridge_port *to,
 189                 struct sk_buff *skb);
 190 extern int br_forward_finish(struct sk_buff *skb);
 191 extern void br_flood_deliver(struct net_bridge *br,
 192                       struct sk_buff *skb,
 193                       int clone);
 194 extern void br_flood_forward(struct net_bridge *br,
 195                       struct sk_buff *skb,
 196                       int clone);
 197
 198 /* br_if.c */
 199 extern int br_add_bridge(const char *name);
 200 extern int br_del_bridge(const char *name);
 201 extern void br_cleanup_bridges(void);
 202 extern int br_add_if(struct net_bridge *br,
 203               struct net_device *dev);
 204 extern int br_del_if(struct net_bridge *br,
 205               struct net_device *dev);
 206 extern int br_min_mtu(const struct net_bridge *br);
 207
 208 /* br_input.c */
 209 extern int br_handle_frame_finish(struct sk_buff *skb);
 210 extern int br_handle_frame(struct sk_buff *skb);
 211 #if defined(CONFIG_MIPS_BRCM)
 212 extern int snooping;
 213 extern void query_timeout(unsigned long ptr);
 214 extern int mc_forward(struct net_bridge *br, struct sk_buff *skb, unsigned char *dest,int forward, int clone);
 215 extern void dolist(struct net_bridge *br);
 216 extern int br_mc_fdb_update(struct net_bridge *br, struct net_bridge_port *prt, unsigned char *dest, unsigned char *host);
 217 extern struct net_bridge_mc_fdb_entry *br_mc_fdb_get(struct net_bridge *br, struct net_bridge_port *prt, unsigned char *dest, unsigned char *host);
 218 extern int br_mc_fdb_add(struct net_bridge *br, struct net_bridge_port *prt, unsigned char *dest, unsigned char *host);
 219 extern void br_mc_fdb_cleanup(struct net_bridge *br);
 220 extern void br_mc_fdb_remove_grp(struct net_bridge *br, struct net_bridge_port *prt, unsigned char *dest);
 221 extern int br_mc_fdb_remove(struct net_bridge *br, struct net_bridge_port *prt, unsigned char *dest, unsigned char *host);
 222 extern void addr_debug(unsigned char *dest);
 223 #endif
 224
 225 /* br_ioctl.c */
 226 extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 227 extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
 228
 229 /* br_netfilter.c */
 230 extern int br_netfilter_init(void);
 231 extern void br_netfilter_fini(void);
 232
 233 /* br_stp.c */
 234 extern void br_log_state(const struct net_bridge_port *p);
 235 extern struct net_bridge_port *br_get_port(struct net_bridge *br,
 236                                            u16 port_no);
 237 extern void br_init_port(struct net_bridge_port *p);
 238 extern void br_become_designated_port(struct net_bridge_port *p);
 239
 240 /* br_stp_if.c */
 241 extern void br_stp_enable_bridge(struct net_bridge *br);
 242 extern void br_stp_disable_bridge(struct net_bridge *br);
 243 extern void br_stp_enable_port(struct net_bridge_port *p);
 244 extern void br_stp_disable_port(struct net_bridge_port *p);
 245 extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
 246 extern void br_stp_set_bridge_priority(struct net_bridge *br,
 247                                        u16 newprio);
 248 extern void br_stp_set_port_priority(struct net_bridge_port *p,
 249                                      u8 newprio);
 250 extern void br_stp_set_path_cost(struct net_bridge_port *p,
 251                                  u32 path_cost);
 252 extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
 253
 254 /* br_stp_bpdu.c */
 255 extern int br_stp_handle_bpdu(struct sk_buff *skb);
 256
 257 /* br_stp_timer.c */
 258 extern void br_stp_timer_init(struct net_bridge *br);
 259 extern void br_stp_port_timer_init(struct net_bridge_port *p);
 260 extern unsigned long br_timer_value(const struct timer_list *timer);
 261
 262 #ifdef CONFIG_SYSFS
 263 /* br_sysfs_if.c */
 264 extern int br_sysfs_addif(struct net_bridge_port *p);
 265 extern void br_sysfs_removeif(struct net_bridge_port *p);
 266 extern void br_sysfs_freeif(struct net_bridge_port *p);
 267
 268 /* br_sysfs_br.c */
 269 extern int br_sysfs_addbr(struct net_device *dev);
 270 extern void br_sysfs_delbr(struct net_device *dev);
 271
 272 #else
 273
 274 #define br_sysfs_addif(p)       (0)
 275 #define br_sysfs_removeif(p)    do { } while(0)
 276 #define br_sysfs_freeif(p)      kfree(p)
 277 #define br_sysfs_addbr(dev)     (0)
 278 #define br_sysfs_delbr(dev)     do { } while(0)
 279 #endif /* CONFIG_SYSFS */
 280
 281 #endif