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Commit fd890fe9 authored Sep 27, 2017 by Yotam Gigi Committed by David S. Miller Sep 27, 2017

mlxsw: spectrum: Notify multicast router on RIF MTU changes



Due to the fact that multicast routes hold the minimum MTU of all the
egress RIFs and trap packets that don't meet it, notify the mulitcast
router code on RIF MTU changes.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent d42b0965

drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -5773,6 +5773,17 @@ int mlxsw_sp_netdevice_router_port_event(struct net_device *dev)
		if (err)
		goto err_rif_fdb_op;

		if (rif->mtu != dev->mtu) {
		struct mlxsw_sp_vr *vr;

		/* The RIF is relevant only to its mr_table instance, as unlike
		* unicast routing, in multicast routing a RIF cannot be shared
		* between several multicast routing tables.
		*/
		vr = &mlxsw_sp->router->vrs[rif->vr_id];
		mlxsw_sp_mr_rif_mtu_update(vr->mr4_table, rif, dev->mtu);
		}

		ether_addr_copy(rif->addr, dev->dev_addr);
		rif->mtu = dev->mtu;