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bridge: implement multicast fast leave

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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>
This commit is contained in:
David S. Miller
2012-12-05 16:24:45 -05:00
parent 0d650ec75a
commit c2d3babfaf
5 changed files with 7 additions and 21 deletions
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19
net/bridge/br_sysfs_if.c
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@@ -173,24 +173,7 @@ static int store_multicast_router(struct net_bridge_port *p,
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[] = {