diff options
| -rw-r--r-- | net/bridge/br_multicast.c | 61 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 1 | ||||
| -rw-r--r-- | net/bridge/br_sysfs_br.c | 18 |
3 files changed, 75 insertions, 5 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 674224b6729d..c7a1095ed84a 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -656,6 +656,15 @@ void br_multicast_del_port(struct net_bridge_port *port) del_timer_sync(&port->multicast_router_timer); } +static void __br_multicast_enable_port(struct net_bridge_port *port) +{ + port->multicast_startup_queries_sent = 0; + + if (try_to_del_timer_sync(&port->multicast_query_timer) >= 0 || + del_timer(&port->multicast_query_timer)) + mod_timer(&port->multicast_query_timer, jiffies); +} + void br_multicast_enable_port(struct net_bridge_port *port) { struct net_bridge *br = port->br; @@ -664,11 +673,7 @@ void br_multicast_enable_port(struct net_bridge_port *port) if (br->multicast_disabled || !netif_running(br->dev)) goto out; - port->multicast_startup_queries_sent = 0; - - if (try_to_del_timer_sync(&port->multicast_query_timer) >= 0 || - del_timer(&port->multicast_query_timer)) - mod_timer(&port->multicast_query_timer, jiffies); + __br_multicast_enable_port(port); out: spin_unlock(&br->multicast_lock); @@ -1210,3 +1215,49 @@ unlock: return err; } + +int br_multicast_toggle(struct net_bridge *br, unsigned long val) +{ + struct net_bridge_port *port; + int err = -ENOENT; + + spin_lock(&br->multicast_lock); + if (!netif_running(br->dev)) + goto unlock; + + err = 0; + if (br->multicast_disabled == !val) + goto unlock; + + br->multicast_disabled = !val; + if (br->multicast_disabled) + goto unlock; + + if (br->mdb) { + if (br->mdb->old) { + err = -EEXIST; +rollback: + br->multicast_disabled = !!val; + goto unlock; + } + + err = br_mdb_rehash(&br->mdb, br->mdb->max, + br->hash_elasticity); + if (err) + goto rollback; + } + + br_multicast_open(br); + list_for_each_entry(port, &br->port_list, list) { + if (port->state == BR_STATE_DISABLED || + port->state == BR_STATE_BLOCKING) + continue; + + __br_multicast_enable_port(port); + } + +unlock: + spin_unlock(&br->multicast_lock); + + return err; +} diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index dcdfafbe4b17..bf162fa6b23b 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -300,6 +300,7 @@ extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); extern int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val); +extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); #else static inline int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c index cb742016db21..0ab288332fc5 100644 --- a/net/bridge/br_sysfs_br.c +++ b/net/bridge/br_sysfs_br.c @@ -361,6 +361,23 @@ static ssize_t store_multicast_router(struct device *d, } static DEVICE_ATTR(multicast_router, S_IRUGO | S_IWUSR, show_multicast_router, store_multicast_router); + +static ssize_t show_multicast_snooping(struct device *d, + struct device_attribute *attr, + char *buf) +{ + struct net_bridge *br = to_bridge(d); + return sprintf(buf, "%d\n", !br->multicast_disabled); +} + +static ssize_t store_multicast_snooping(struct device *d, + struct device_attribute *attr, + const char *buf, size_t len) +{ + return store_bridge_parm(d, buf, len, br_multicast_toggle); +} +static DEVICE_ATTR(multicast_snooping, S_IRUGO | S_IWUSR, + show_multicast_snooping, store_multicast_snooping); #endif static struct attribute *bridge_attrs[] = { @@ -384,6 +401,7 @@ static struct attribute *bridge_attrs[] = { &dev_attr_flush.attr, #ifdef CONFIG_BRIDGE_IGMP_SNOOPING &dev_attr_multicast_router.attr, + &dev_attr_multicast_snooping.attr, #endif NULL }; |