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-rw-r--r--net/bridge/br_multicast.c20
-rw-r--r--net/bridge/br_private.h2
-rw-r--r--net/bridge/br_sysfs_br.c18
3 files changed, 40 insertions, 0 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index b3647d090e1f..708e84f31888 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -783,6 +783,7 @@ static void br_multicast_send_query(struct net_bridge *br,
struct br_ip br_group;
if (!netif_running(br->dev) || br->multicast_disabled ||
+ !br->multicast_querier ||
timer_pending(&br->multicast_querier_timer))
return;
@@ -1565,6 +1566,7 @@ void br_multicast_init(struct net_bridge *br)
br->hash_max = 512;
br->multicast_router = 1;
+ br->multicast_querier = 0;
br->multicast_last_member_count = 2;
br->multicast_startup_query_count = 2;
@@ -1760,6 +1762,24 @@ unlock:
return err;
}
+int br_multicast_set_querier(struct net_bridge *br, unsigned long val)
+{
+ val = !!val;
+
+ spin_lock_bh(&br->multicast_lock);
+ if (br->multicast_querier == val)
+ goto unlock;
+
+ br->multicast_querier = val;
+ if (val)
+ br_multicast_start_querier(br);
+
+unlock:
+ spin_unlock_bh(&br->multicast_lock);
+
+ return 0;
+}
+
int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val)
{
int err = -ENOENT;
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index e1d882257877..f8ffd8c49054 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -224,6 +224,7 @@ struct net_bridge
unsigned char multicast_router;
u8 multicast_disabled:1;
+ u8 multicast_querier:1;
u32 hash_elasticity;
u32 hash_max;
@@ -417,6 +418,7 @@ 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);
+extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
static inline bool br_multicast_is_router(struct net_bridge *br)
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 766fd7fb0295..c5c059333eab 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -379,6 +379,23 @@ static ssize_t store_multicast_snooping(struct device *d,
static DEVICE_ATTR(multicast_snooping, S_IRUGO | S_IWUSR,
show_multicast_snooping, store_multicast_snooping);
+static ssize_t show_multicast_querier(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct net_bridge *br = to_bridge(d);
+ return sprintf(buf, "%d\n", br->multicast_querier);
+}
+
+static ssize_t store_multicast_querier(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ return store_bridge_parm(d, buf, len, br_multicast_set_querier);
+}
+static DEVICE_ATTR(multicast_querier, S_IRUGO | S_IWUSR,
+ show_multicast_querier, store_multicast_querier);
+
static ssize_t show_hash_elasticity(struct device *d,
struct device_attribute *attr, char *buf)
{
@@ -702,6 +719,7 @@ static struct attribute *bridge_attrs[] = {
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
&dev_attr_multicast_router.attr,
&dev_attr_multicast_snooping.attr,
+ &dev_attr_multicast_querier.attr,
&dev_attr_hash_elasticity.attr,
&dev_attr_hash_max.attr,
&dev_attr_multicast_last_member_count.attr,