diff options
| -rw-r--r-- | net/bridge/br_fdb.c | 19 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 1 | ||||
| -rw-r--r-- | net/bridge/br_sysfs_br.c | 14 | ||||
| -rw-r--r-- | net/bridge/br_sysfs_if.c | 8 |
4 files changed, 42 insertions, 0 deletions
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index dd5a5d5fb280..22645e3edf23 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -135,7 +135,26 @@ void br_fdb_cleanup(unsigned long _data) mod_timer(&br->gc_timer, jiffies + HZ/10); } +/* Completely flush all dynamic entries in forwarding database.*/ +void br_fdb_flush(struct net_bridge *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) + fdb_delete(f); + } + } + spin_unlock_bh(&br->hash_lock); +} + +/* Flush all entries refering to a specific port. + * if do_all is set also flush static entries + */ void br_fdb_delete_by_port(struct net_bridge *br, const struct net_bridge_port *p, int do_all) diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index fab8ce0ce88d..3adacdf3406f 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -135,6 +135,7 @@ extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev); /* br_fdb.c */ extern void br_fdb_init(void); extern void br_fdb_fini(void); +extern void br_fdb_flush(struct net_bridge *br); extern void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); extern void br_fdb_cleanup(unsigned long arg); diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c index 01a22ad0cc75..6cc5cfe665cd 100644 --- a/net/bridge/br_sysfs_br.c +++ b/net/bridge/br_sysfs_br.c @@ -309,6 +309,19 @@ static ssize_t store_group_addr(struct device *d, static DEVICE_ATTR(group_addr, S_IRUGO | S_IWUSR, show_group_addr, store_group_addr); +static ssize_t store_flush(struct device *d, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct net_bridge *br = to_bridge(d); + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + br_fdb_flush(br); + return len; +} +static DEVICE_ATTR(flush, S_IWUSR, NULL, store_flush); static struct attribute *bridge_attrs[] = { &dev_attr_forward_delay.attr, @@ -328,6 +341,7 @@ static struct attribute *bridge_attrs[] = { &dev_attr_topology_change_timer.attr, &dev_attr_gc_timer.attr, &dev_attr_group_addr.attr, + &dev_attr_flush.attr, NULL }; diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c index 0bc2aef8f9f3..2da22927d8dd 100644 --- a/net/bridge/br_sysfs_if.c +++ b/net/bridge/br_sysfs_if.c @@ -137,6 +137,13 @@ static ssize_t show_hold_timer(struct net_bridge_port *p, } static BRPORT_ATTR(hold_timer, S_IRUGO, show_hold_timer, NULL); +static ssize_t store_flush(struct net_bridge_port *p, unsigned long v) +{ + br_fdb_delete_by_port(p->br, p, 0); // Don't delete local entry + return 0; +} +static BRPORT_ATTR(flush, S_IWUSR, NULL, store_flush); + static struct brport_attribute *brport_attrs[] = { &brport_attr_path_cost, &brport_attr_priority, @@ -152,6 +159,7 @@ static struct brport_attribute *brport_attrs[] = { &brport_attr_message_age_timer, &brport_attr_forward_delay_timer, &brport_attr_hold_timer, + &brport_attr_flush, NULL }; |