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switchdev: bridge: Offload multicast disabled

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Offload multicast disabled flag, for more accurate mc flood behavior:
When it is on, the mdb should be ignored.
When it is off, unregistered mc packets should be flooded to mc router
ports.

Signed-off-by: Nogah Frankel <[email protected]>
Signed-off-by: Yotam Gigi <[email protected]>
Signed-off-by: Jiri Pirko <[email protected]>
Acked-by: Ivan Vecera <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Nogah Frankel 2017-02-09 14:54:40 +01:00 • committed by David S. Miller
commit 147c1e9b90
2 changed files with 18 additions and 0 deletions
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16
net/bridge/br_multicast.c
View file

@ -27,6 +27,7 @@
#include <linux/inetdevice.h>
#include <linux/mroute.h>
#include <net/ip.h>
#include <net/switchdev.h>
#if IS_ENABLED(CONFIG_IPV6)
#include <net/ipv6.h>
#include <net/mld.h>
@ -1007,6 +1008,18 @@ static void br_ip6_multicast_port_query_expired(unsigned long data)
}
#endif
static void br_mc_disabled_update(struct net_device *dev, bool value)
{
struct switchdev_attr attr = {
.orig_dev = dev,
.id = SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
.flags = SWITCHDEV_F_DEFER,
.u.mc_disabled = value,
};
switchdev_port_attr_set(dev, &attr);
}
int br_multicast_add_port(struct net_bridge_port *port)
{
port->multicast_router = MDB_RTR_TYPE_TEMP_QUERY;
@ -1019,6 +1032,8 @@ int br_multicast_add_port(struct net_bridge_port *port)
setup_timer(&port->ip6_own_query.timer,
br_ip6_multicast_port_query_expired, (unsigned long)port);
#endif
br_mc_disabled_update(port->dev, port->br->multicast_disabled);
port->mcast_stats = netdev_alloc_pcpu_stats(struct bridge_mcast_stats);
if (!port->mcast_stats)
return -ENOMEM;
@ -2121,6 +2136,7 @@ int br_multicast_toggle(struct net_bridge *br, unsigned long val)
if (br->multicast_disabled == !val)
goto unlock;
br_mc_disabled_update(br->dev, !val);
br->multicast_disabled = !val;
if (br->multicast_disabled)
goto unlock;