switchdev: Adding IGMP snooping documentation
authorElad Raz <eladr@mellanox.com>
Sun, 10 Jan 2016 20:06:29 +0000 (21:06 +0100)
committerDavid S. Miller <davem@davemloft.net>
Sun, 10 Jan 2016 21:50:21 +0000 (16:50 -0500)
Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Documentation/networking/switchdev.txt

index 91994134efca9c92635eb5fe8503e5d5b63ae4b0..fad63136ee3eb8ecf5ad013da54b4013fc9c6e10 100644 (file)
@@ -304,8 +304,12 @@ certain netdevs from flooding unicast traffic for which there is no FDB entry.
 IGMP Snooping
 ^^^^^^^^^^^^^
 
-XXX: complete this section
-
+In order to support IGMP snooping, the port netdevs should trap to the bridge
+driver all IGMP join and leave messages.
+The bridge multicast module will notify port netdevs on every multicast group
+changed whether it is static configured or dynamically joined/leave.
+The hardware implementation should be forwarding all registered multicast
+traffic groups only to the configured ports.
 
 L3 Routing Offload
 ------------------