Commit c3976a3f authored by Arınç ÜNAL's avatar Arınç ÜNAL Committed by Jakub Kicinski
Browse files

net: bridge: offload BR_HAIRPIN_MODE, BR_ISOLATED, BR_MULTICAST_TO_UNICAST 



Add BR_HAIRPIN_MODE, BR_ISOLATED and BR_MULTICAST_TO_UNICAST port flags to
BR_PORT_FLAGS_HW_OFFLOAD so that switchdev drivers which have an offloaded
data plane have a chance to reject these bridge port flags if they don't
support them yet.

It makes the code path go through the
SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS driver handlers, which return
-EINVAL for everything they don't recognize.

For drivers that don't catch SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS at
all, switchdev will return -EOPNOTSUPP for those which is then ignored, but
those are in the minority.

Signed-off-by: default avatarArınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: default avatarIdo Schimmel <idosch@nvidia.com>
Reviewed-by: default avatarVladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20220410134227.18810-1-arinc.unal@arinc9.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 808cee16

net/bridge/br_switchdev.c

+2 −1
Original line number Diff line number Diff line
@@ -72,7 +72,8 @@ bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, 


/* Flags that can be offloaded to hardware */

#define BR_PORT_FLAGS_HW_OFFLOAD (BR_LEARNING | BR_FLOOD | \

				  BR_MCAST_FLOOD | BR_BCAST_FLOOD | BR_PORT_LOCKED)

				  BR_MCAST_FLOOD | BR_BCAST_FLOOD | BR_PORT_LOCKED | \

				  BR_HAIRPIN_MODE | BR_ISOLATED | BR_MULTICAST_TO_UNICAST)



int br_switchdev_set_port_flag(struct net_bridge_port *p,

			       unsigned long flags,