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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>
This commit is contained in:
Yotam Gigi 2017-09-27 08:23:21 +02:00 committed by David S. Miller
parent d42b0965b1
commit fd890fe98f
1 changed files with 11 additions and 0 deletions
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11
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
View File

@ -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;