From: Elad Raz Date: Sun, 10 Jan 2016 20:06:29 +0000 (+0100) Subject: switchdev: Adding IGMP snooping documentation X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=4f5590f8cd736768170818d1b7ea0075972e2701;p=deliverable%2Flinux.git switchdev: Adding IGMP snooping documentation Signed-off-by: Elad Raz Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- diff --git a/Documentation/networking/switchdev.txt b/Documentation/networking/switchdev.txt index 91994134efca..fad63136ee3e 100644 --- a/Documentation/networking/switchdev.txt +++ b/Documentation/networking/switchdev.txt @@ -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 ------------------