bridge: implement multicast fast leave
V3: make it a flag
V2: make the toggle per-port
Fast leave allows bridge to immediately stops the multicast
traffic on the port receives IGMP Leave when IGMP snooping is enabled,
no timeouts are observed.
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c
index dc484ac..a1ef1b6 100644
--- a/net/bridge/br_sysfs_if.c
+++ b/net/bridge/br_sysfs_if.c
@@ -173,24 +173,7 @@
static BRPORT_ATTR(multicast_router, S_IRUGO | S_IWUSR, show_multicast_router,
store_multicast_router);
-static ssize_t show_multicast_fast_leave(struct net_bridge_port *p,
- char *buf)
-{
- return sprintf(buf, "%d\n", p->multicast_fast_leave);
-}
-
-static int store_multicast_fast_leave(struct net_bridge_port *p,
- unsigned long v)
-{
- if (p->br->multicast_disabled)
- return -EINVAL;
-
- p->multicast_fast_leave = !!v;
- return 0;
-}
-
-static BRPORT_ATTR(multicast_fast_leave, S_IRUGO | S_IWUSR,
- show_multicast_fast_leave, store_multicast_fast_leave);
+BRPORT_ATTR_FLAG(multicast_fast_leave, BR_MULTICAST_FAST_LEAVE);
#endif
static const struct brport_attribute *brport_attrs[] = {
