Commit 4cf35a2b authored by Vladimir Oltean's avatar Vladimir Oltean Committed by Paolo Abeni
Browse files

net: mscc: ocelot: fix broken IP multicast flooding 



When the user runs:
bridge link set dev $br_port mcast_flood on

this command should affect not only L2 multicast, but also IPv4 and IPv6
multicast.

In the Ocelot switch, unknown multicast gets flooded according to
different PGIDs according to its type, and PGID_MC only handles L2
multicast. Therefore, by leaving PGID_MCIPV4 and PGID_MCIPV6 at their
default value of 0, unknown IP multicast traffic is never flooded.

Fixes: 421741ea ("net: mscc: ocelot: offload bridge port flags to device")
Signed-off-by: default avatarVladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20220415151950.219660-1-vladimir.oltean@nxp.com


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 0763120b

drivers/net/ethernet/mscc/ocelot.c

+2 −0
Original line number Diff line number Diff line
@@ -2859,6 +2859,8 @@ static void ocelot_port_set_mcast_flood(struct ocelot *ocelot, int port, 
		val = BIT(port);



	ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MC);

	ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MCIPV4);

	ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MCIPV6);

}



static void ocelot_port_set_bcast_flood(struct ocelot *ocelot, int port,