diff options
Diffstat (limited to 'net/bridge')
40 files changed, 8982 insertions, 0 deletions
diff --git a/net/bridge/Makefile b/net/bridge/Makefile new file mode 100644 index 000000000000..59556e40e143 --- /dev/null +++ b/net/bridge/Makefile @@ -0,0 +1,15 @@ +# +# Makefile for the IEEE 802.1d ethernet bridging layer. +# + +obj-$(CONFIG_BRIDGE) += bridge.o + +bridge-y := br.o br_device.o br_fdb.o br_forward.o br_if.o br_input.o \ + br_ioctl.o br_notify.o br_stp.o br_stp_bpdu.o \ + br_stp_if.o br_stp_timer.o + +bridge-$(CONFIG_SYSFS) += br_sysfs_if.o br_sysfs_br.o + +bridge-$(CONFIG_BRIDGE_NETFILTER) += br_netfilter.o + +obj-$(CONFIG_BRIDGE_NF_EBTABLES) += netfilter/ diff --git a/net/bridge/br.c b/net/bridge/br.c new file mode 100644 index 000000000000..f8f184942aaf --- /dev/null +++ b/net/bridge/br.c @@ -0,0 +1,69 @@ +/* + * Generic parts + * Linux ethernet bridge + * + * Authors: + * Lennert Buytenhek <buytenh@gnu.org> + * + * $Id: br.c,v 1.47 2001/12/24 00:56:41 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. + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/init.h> + +#include "br_private.h" + +int (*br_should_route_hook) (struct sk_buff **pskb) = NULL; + +static int __init br_init(void) +{ + br_fdb_init(); + +#ifdef CONFIG_BRIDGE_NETFILTER + if (br_netfilter_init()) + return 1; +#endif + brioctl_set(br_ioctl_deviceless_stub); + br_handle_frame_hook = br_handle_frame; + + br_fdb_get_hook = br_fdb_get; + br_fdb_put_hook = br_fdb_put; + + register_netdevice_notifier(&br_device_notifier); + + return 0; +} + +static void __exit br_deinit(void) +{ +#ifdef CONFIG_BRIDGE_NETFILTER + br_netfilter_fini(); +#endif + unregister_netdevice_notifier(&br_device_notifier); + brioctl_set(NULL); + + br_cleanup_bridges(); + + synchronize_net(); + + br_fdb_get_hook = NULL; + br_fdb_put_hook = NULL; + + br_handle_frame_hook = NULL; + br_fdb_fini(); +} + +EXPORT_SYMBOL(br_should_route_hook); + +module_init(br_init) +module_exit(br_deinit) +MODULE_LICENSE("GPL"); diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c new file mode 100644 index 000000000000..d9b72fde433c --- /dev/null +++ b/net/bridge/br_device.c @@ -0,0 +1,104 @@ +/* + * Device handling code + * Linux ethernet bridge + * + * Authors: + * Lennert Buytenhek <buytenh@gnu.org> + * + * $Id: br_device.c,v 1.6 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. + */ + +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/module.h> +#include <asm/uaccess.h> +#include "br_private.h" + +static struct net_device_stats *br_dev_get_stats(struct net_device *dev) +{ + struct net_bridge *br; + + br = dev->priv; + + return &br->statistics; +} + +int br_dev_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct net_bridge *br = netdev_priv(dev); + const unsigned char *dest = skb->data; + struct net_bridge_fdb_entry *dst; + + br->statistics.tx_packets++; + br->statistics.tx_bytes += skb->len; + + skb->mac.raw = skb->data; + skb_pull(skb, ETH_HLEN); + + rcu_read_lock(); + if (dest[0] & 1) + br_flood_deliver(br, skb, 0); + else if ((dst = __br_fdb_get(br, dest)) != NULL) + br_deliver(dst->dst, skb); + else + br_flood_deliver(br, skb, 0); + + rcu_read_unlock(); + return 0; +} + +static int br_dev_open(struct net_device *dev) +{ + netif_start_queue(dev); + + br_stp_enable_bridge(dev->priv); + + return 0; +} + +static void br_dev_set_multicast_list(struct net_device *dev) +{ +} + +static int br_dev_stop(struct net_device *dev) +{ + br_stp_disable_bridge(dev->priv); + + netif_stop_queue(dev); + + return 0; +} + +static int br_change_mtu(struct net_device *dev, int new_mtu) +{ + if ((new_mtu < 68) || new_mtu > br_min_mtu(dev->priv)) + return -EINVAL; + + dev->mtu = new_mtu; + return 0; +} + +void br_dev_setup(struct net_device *dev) +{ + memset(dev->dev_addr, 0, ETH_ALEN); + + ether_setup(dev); + + dev->do_ioctl = br_dev_ioctl; + dev->get_stats = br_dev_get_stats; + dev->hard_start_xmit = br_dev_xmit; + dev->open = br_dev_open; + dev->set_multicast_list = br_dev_set_multicast_list; + dev->change_mtu = br_change_mtu; + dev->destructor = free_netdev; + SET_MODULE_OWNER(dev); + dev->stop = br_dev_stop; + dev->tx_queue_len = 0; + dev->set_mac_address = NULL; + dev->priv_flags = IFF_EBRIDGE; +} diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c new file mode 100644 index 000000000000..e6c2200b7ca3 --- /dev/null +++ b/net/bridge/br_fdb.c @@ -0,0 +1,368 @@ +/* + * Forwarding database + * Linux ethernet bridge + * + * Authors: + * Lennert Buytenhek <buytenh@gnu.org> + * + * $Id: br_fdb.c,v 1.6 2002/01/17 00:57:07 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. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/spinlock.h> +#include <linux/times.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/jhash.h> +#include <asm/atomic.h> +#include "br_private.h" + +static kmem_cache_t *br_fdb_cache; +static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source, + const unsigned char *addr); + +void __init br_fdb_init(void) +{ + br_fdb_cache = kmem_cache_create("bridge_fdb_cache", + sizeof(struct net_bridge_fdb_entry), + 0, + SLAB_HWCACHE_ALIGN, NULL, NULL); +} + +void __exit br_fdb_fini(void) +{ + kmem_cache_destroy(br_fdb_cache); +} + + +/* if topology_changing then use forward_delay (default 15 sec) + * otherwise keep longer (default 5 minutes) + */ +static __inline__ unsigned long hold_time(const struct net_bridge *br) +{ + return br->topology_change ? br->forward_delay : br->ageing_time; +} + +static __inline__ int has_expired(const struct net_bridge *br, + const struct net_bridge_fdb_entry *fdb) +{ + return !fdb->is_static + && time_before_eq(fdb->ageing_timer + hold_time(br), jiffies); +} + +static __inline__ int br_mac_hash(const unsigned char *mac) +{ + return jhash(mac, ETH_ALEN, 0) & (BR_HASH_SIZE - 1); +} + +static __inline__ void fdb_delete(struct net_bridge_fdb_entry *f) +{ + hlist_del_rcu(&f->hlist); + br_fdb_put(f); +} + +void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr) +{ + struct net_bridge *br = p->br; + int i; + + spin_lock_bh(&br->hash_lock); + + /* Search all chains since old address/hash is unknown */ + for (i = 0; i < BR_HASH_SIZE; i++) { + struct hlist_node *h; + hlist_for_each(h, &br->hash[i]) { + struct net_bridge_fdb_entry *f; + + f = hlist_entry(h, struct net_bridge_fdb_entry, hlist); + if (f->dst == p && f->is_local) { + /* maybe another port has same hw addr? */ + struct net_bridge_port *op; + list_for_each_entry(op, &br->port_list, list) { + if (op != p && + !memcmp(op->dev->dev_addr, + f->addr.addr, ETH_ALEN)) { + f->dst = op; + goto insert; + } + } + + /* delete old one */ + fdb_delete(f); + goto insert; + } + } + } + insert: + /* insert new address, may fail if invalid address or dup. */ + fdb_insert(br, p, newaddr); + + spin_unlock_bh(&br->hash_lock); +} + +void br_fdb_cleanup(unsigned long _data) +{ + struct net_bridge *br = (struct net_bridge *)_data; + unsigned long delay = hold_time(br); + int i; + + spin_lock_bh(&br->hash_lock); + for (i = 0; i < BR_HASH_SIZE; i++) { + struct net_bridge_fdb_entry *f; + struct hlist_node *h, *n; + + hlist_for_each_entry_safe(f, h, n, &br->hash[i], hlist) { + if (!f->is_static && + time_before_eq(f->ageing_timer + delay, jiffies)) + fdb_delete(f); + } + } + spin_unlock_bh(&br->hash_lock); + + mod_timer(&br->gc_timer, jiffies + HZ/10); +} + +void br_fdb_delete_by_port(struct net_bridge *br, struct net_bridge_port *p) +{ + int i; + + spin_lock_bh(&br->hash_lock); + for (i = 0; i < BR_HASH_SIZE; i++) { + struct hlist_node *h, *g; + + hlist_for_each_safe(h, g, &br->hash[i]) { + struct net_bridge_fdb_entry *f + = hlist_entry(h, struct net_bridge_fdb_entry, hlist); + if (f->dst != p) + continue; + + /* + * if multiple ports all have the same device address + * then when one port is deleted, assign + * the local entry to other port + */ + if (f->is_local) { + struct net_bridge_port *op; + list_for_each_entry(op, &br->port_list, list) { + if (op != p && + !memcmp(op->dev->dev_addr, + f->addr.addr, ETH_ALEN)) { + f->dst = op; + goto skip_delete; + } + } + } + + fdb_delete(f); + skip_delete: ; + } + } + spin_unlock_bh(&br->hash_lock); +} + +/* No locking or refcounting, assumes caller has no preempt (rcu_read_lock) */ +struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, + const unsigned char *addr) +{ + struct hlist_node *h; + struct net_bridge_fdb_entry *fdb; + + hlist_for_each_entry_rcu(fdb, h, &br->hash[br_mac_hash(addr)], hlist) { + if (!memcmp(fdb->addr.addr, addr, ETH_ALEN)) { + if (unlikely(has_expired(br, fdb))) + break; + return fdb; + } + } + + return NULL; +} + +/* Interface used by ATM hook that keeps a ref count */ +struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br, + unsigned char *addr) +{ + struct net_bridge_fdb_entry *fdb; + + rcu_read_lock(); + fdb = __br_fdb_get(br, addr); + if (fdb) + atomic_inc(&fdb->use_count); + rcu_read_unlock(); + return fdb; +} + +static void fdb_rcu_free(struct rcu_head *head) +{ + struct net_bridge_fdb_entry *ent + = container_of(head, struct net_bridge_fdb_entry, rcu); + kmem_cache_free(br_fdb_cache, ent); +} + +/* Set entry up for deletion with RCU */ +void br_fdb_put(struct net_bridge_fdb_entry *ent) +{ + if (atomic_dec_and_test(&ent->use_count)) + call_rcu(&ent->rcu, fdb_rcu_free); +} + +/* + * Fill buffer with forwarding table records in + * the API format. + */ +int br_fdb_fillbuf(struct net_bridge *br, void *buf, + unsigned long maxnum, unsigned long skip) +{ + struct __fdb_entry *fe = buf; + int i, num = 0; + struct hlist_node *h; + struct net_bridge_fdb_entry *f; + + memset(buf, 0, maxnum*sizeof(struct __fdb_entry)); + + rcu_read_lock(); + for (i = 0; i < BR_HASH_SIZE; i++) { + hlist_for_each_entry_rcu(f, h, &br->hash[i], hlist) { + if (num >= maxnum) + goto out; + + if (has_expired(br, f)) + continue; + + if (skip) { + --skip; + continue; + } + + /* convert from internal format to API */ + memcpy(fe->mac_addr, f->addr.addr, ETH_ALEN); + fe->port_no = f->dst->port_no; + fe->is_local = f->is_local; + if (!f->is_static) + fe->ageing_timer_value = jiffies_to_clock_t(jiffies - f->ageing_timer); + ++fe; + ++num; + } + } + + out: + rcu_read_unlock(); + + return num; +} + +static inline struct net_bridge_fdb_entry *fdb_find(struct hlist_head *head, + const unsigned char *addr) +{ + struct hlist_node *h; + struct net_bridge_fdb_entry *fdb; + + hlist_for_each_entry_rcu(fdb, h, head, hlist) { + if (!memcmp(fdb->addr.addr, addr, ETH_ALEN)) + return fdb; + } + return NULL; +} + +static struct net_bridge_fdb_entry *fdb_create(struct hlist_head *head, + struct net_bridge_port *source, + const unsigned char *addr, + int is_local) +{ + struct net_bridge_fdb_entry *fdb; + + fdb = kmem_cache_alloc(br_fdb_cache, GFP_ATOMIC); + if (fdb) { + memcpy(fdb->addr.addr, addr, ETH_ALEN); + atomic_set(&fdb->use_count, 1); + hlist_add_head_rcu(&fdb->hlist, head); + + fdb->dst = source; + fdb->is_local = is_local; + fdb->is_static = is_local; + fdb->ageing_timer = jiffies; + } + return fdb; +} + +static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source, + const unsigned char *addr) +{ + struct hlist_head *head = &br->hash[br_mac_hash(addr)]; + struct net_bridge_fdb_entry *fdb; + + if (!is_valid_ether_addr(addr)) + return -EINVAL; + + fdb = fdb_find(head, addr); + if (fdb) { + /* it is okay to have multiple ports with same + * address, just use the first one. + */ + if (fdb->is_local) + return 0; + + printk(KERN_WARNING "%s adding interface with same address " + "as a received packet\n", + source->dev->name); + fdb_delete(fdb); + } + + if (!fdb_create(head, source, addr, 1)) + return -ENOMEM; + + return 0; +} + +int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, + const unsigned char *addr) +{ + int ret; + + spin_lock_bh(&br->hash_lock); + ret = fdb_insert(br, source, addr); + spin_unlock_bh(&br->hash_lock); + return ret; +} + +void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, + const unsigned char *addr) +{ + struct hlist_head *head = &br->hash[br_mac_hash(addr)]; + struct net_bridge_fdb_entry *fdb; + + /* some users want to always flood. */ + if (hold_time(br) == 0) + return; + + rcu_read_lock(); + fdb = fdb_find(head, addr); + if (likely(fdb)) { + /* attempt to update an entry for a local interface */ + if (unlikely(fdb->is_local)) { + if (net_ratelimit()) + printk(KERN_WARNING "%s: received packet with " + " own address as source address\n", + source->dev->name); + } else { + /* fastpath: update of existing entry */ + fdb->dst = source; + fdb->ageing_timer = jiffies; + } + } else { + spin_lock_bh(&br->hash_lock); + if (!fdb_find(head, addr)) + fdb_create(head, source, addr, 0); + /* else we lose race and someone else inserts + * it first, don't bother updating + */ + spin_unlock_bh(&br->hash_lock); + } + rcu_read_unlock(); +} diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c new file mode 100644 index 000000000000..ef9f2095f96e --- /dev/null +++ b/net/bridge/br_forward.c @@ -0,0 +1,159 @@ +/* + * Forwarding decision + * Linux ethernet bridge + * + * Authors: + * Lennert Buytenhek <buytenh@gnu.org> + * + * $Id: br_forward.c,v 1.4 2001/08/14 22:05:57 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. + */ + +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/skbuff.h> +#include <linux/netfilter_bridge.h> +#include "br_private.h" + +static inline int should_deliver(const struct net_bridge_port *p, + const struct sk_buff *skb) +{ + if (skb->dev == p->dev || + p->state != BR_STATE_FORWARDING) + return 0; + + return 1; +} + +int br_dev_queue_push_xmit(struct sk_buff *skb) +{ + if (skb->len > skb->dev->mtu) + kfree_skb(skb); + else { +#ifdef CONFIG_BRIDGE_NETFILTER + /* ip_refrag calls ip_fragment, doesn't copy the MAC header. */ + nf_bridge_maybe_copy_header(skb); +#endif + skb_push(skb, ETH_HLEN); + + dev_queue_xmit(skb); + } + + return 0; +} + +int br_forward_finish(struct sk_buff *skb) +{ + NF_HOOK(PF_BRIDGE, NF_BR_POST_ROUTING, skb, NULL, skb->dev, + br_dev_queue_push_xmit); + + return 0; +} + +static void __br_deliver(const struct net_bridge_port *to, struct sk_buff *skb) +{ + skb->dev = to->dev; +#ifdef CONFIG_NETFILTER_DEBUG + skb->nf_debug = 0; +#endif + NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev, + br_forward_finish); +} + +static void __br_forward(const struct net_bridge_port *to, struct sk_buff *skb) +{ + struct net_device *indev; + + indev = skb->dev; + skb->dev = to->dev; + skb->ip_summed = CHECKSUM_NONE; + + NF_HOOK(PF_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev, + br_forward_finish); +} + +/* called with rcu_read_lock */ +void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb) +{ + if (should_deliver(to, skb)) { + __br_deliver(to, skb); + return; + } + + kfree_skb(skb); +} + +/* called with rcu_read_lock */ +void br_forward(const struct net_bridge_port *to, struct sk_buff *skb) +{ + if (should_deliver(to, skb)) { + __br_forward(to, skb); + return; + } + + kfree_skb(skb); +} + +/* called under bridge lock */ +static void br_flood(struct net_bridge *br, struct sk_buff *skb, int clone, + void (*__packet_hook)(const struct net_bridge_port *p, + struct sk_buff *skb)) +{ + struct net_bridge_port *p; + struct net_bridge_port *prev; + + if (clone) { + struct sk_buff *skb2; + + if ((skb2 = skb_clone(skb, GFP_ATOMIC)) == NULL) { + br->statistics.tx_dropped++; + return; + } + + skb = skb2; + } + + prev = NULL; + + list_for_each_entry_rcu(p, &br->port_list, list) { + if (should_deliver(p, skb)) { + if (prev != NULL) { + struct sk_buff *skb2; + + if ((skb2 = skb_clone(skb, GFP_ATOMIC)) == NULL) { + br->statistics.tx_dropped++; + kfree_skb(skb); + return; + } + + __packet_hook(prev, skb2); + } + + prev = p; + } + } + + if (prev != NULL) { + __packet_hook(prev, skb); + return; + } + + kfree_skb(skb); +} + + +/* called with rcu_read_lock */ +void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, int clone) +{ + br_flood(br, skb, clone, __br_deliver); +} + +/* called under bridge lock */ +void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, int clone) +{ + br_flood(br, skb, clone, __br_forward); +} diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c new file mode 100644 index 000000000000..69872bf3b87e --- /dev/null +++ b/net/bridge/br_if.c @@ -0,0 +1,388 @@ +/* + * Userspace interface + * Linux ethernet bridge + * + * Authors: + * Lennert Buytenhek <buytenh@gnu.org> + * + * $Id: br_if.c,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. + */ + +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/ethtool.h> +#include <linux/if_arp.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/rtnetlink.h> +#include <net/sock.h> + +#include "br_private.h" + +/* + * Determine initial path cost based on speed. + * using recommendations from 802.1d standard + * + * Need to simulate user ioctl because not all device's that support + * ethtool, use ethtool_ops. Also, since driver might sleep need to + * not be holding any locks. + */ +static int br_initial_port_cost(struct net_device *dev) +{ + + struct ethtool_cmd ecmd = { ETHTOOL_GSET }; + struct ifreq ifr; + mm_segment_t old_fs; + int err; + + strncpy(ifr.ifr_name, dev->name, IFNAMSIZ); + ifr.ifr_data = (void __user *) &ecmd; + + old_fs = get_fs(); + set_fs(KERNEL_DS); + err = dev_ethtool(&ifr); + set_fs(old_fs); + + if (!err) { + switch(ecmd.speed) { + case SPEED_100: + return 19; + case SPEED_1000: + return 4; + case SPEED_10000: + return 2; + case SPEED_10: + return 100; + default: + pr_info("bridge: can't decode speed from %s: %d\n", + dev->name, ecmd.speed); + return 100; + } + } + + /* Old silly heuristics based on name */ + if (!strncmp(dev->name, "lec", 3)) + return 7; + + if (!strncmp(dev->name, "plip", 4)) + return 2500; + + return 100; /* assume old 10Mbps */ +} + +static void destroy_nbp(struct net_bridge_port *p) +{ + struct net_device *dev = p->dev; + + dev->br_port = NULL; + p->br = NULL; + p->dev = NULL; + dev_put(dev); + + br_sysfs_freeif(p); +} + +static void destroy_nbp_rcu(struct rcu_head *head) +{ + struct net_bridge_port *p = + container_of(head, struct net_bridge_port, rcu); + destroy_nbp(p); +} + +/* called with RTNL */ +static void del_nbp(struct net_bridge_port *p) +{ + struct net_bridge *br = p->br; + struct net_device *dev = p->dev; + + dev_set_promiscuity(dev, -1); + + spin_lock_bh(&br->lock); + br_stp_disable_port(p); + spin_unlock_bh(&br->lock); + + br_fdb_delete_by_port(br, p); + + list_del_rcu(&p->list); + + del_timer_sync(&p->message_age_timer); + del_timer_sync(&p->forward_delay_timer); + del_timer_sync(&p->hold_timer); + + call_rcu(&p->rcu, destroy_nbp_rcu); +} + +/* called with RTNL */ +static void del_br(struct net_bridge *br) +{ + struct net_bridge_port *p, *n; + + list_for_each_entry_safe(p, n, &br->port_list, list) { + br_sysfs_removeif(p); + del_nbp(p); + } + + del_timer_sync(&br->gc_timer); + + br_sysfs_delbr(br->dev); + unregister_netdevice(br->dev); +} + +static struct net_device *new_bridge_dev(const char *name) +{ + struct net_bridge *br; + struct net_device *dev; + + dev = alloc_netdev(sizeof(struct net_bridge), name, + br_dev_setup); + + if (!dev) + return NULL; + + br = netdev_priv(dev); + br->dev = dev; + + spin_lock_init(&br->lock); + INIT_LIST_HEAD(&br->port_list); + spin_lock_init(&br->hash_lock); + + br->bridge_id.prio[0] = 0x80; + br->bridge_id.prio[1] = 0x00; + memset(br->bridge_id.addr, 0, ETH_ALEN); + + br->stp_enabled = 0; + br->designated_root = br->bridge_id; + br->root_path_cost = 0; + br->root_port = 0; + br->bridge_max_age = br->max_age = 20 * HZ; + br->bridge_hello_time = br->hello_time = 2 * HZ; + br->bridge_forward_delay = br->forward_delay = 15 * HZ; + br->topology_change = 0; + br->topology_change_detected = 0; + br->ageing_time = 300 * HZ; + INIT_LIST_HEAD(&br->age_list); + + br_stp_timer_init(br); + + return dev; +} |