net: mscc: ocelot: offload ingress skbedit and vlan actions to VCAP IS1
VCAP IS1 is a VCAP module which can filter on the most common L2/L3/L4 Ethernet keys, and modify the results of the basic QoS classification and VLAN classification based on those flow keys. There are 3 VCAP IS1 lookups, mapped over chains 10000, 11000 and 12000. Currently the driver is hardcoded to use IS1_ACTION_TYPE_NORMAL half keys. Note that the VLAN_MANGLE has been omitted for now. In hardware, the VCAP_IS1_ACT_VID_REPLACE_ENA field replaces the classified VLAN (metadata associated with the frame) and not the VLAN from the header itself. There are currently some issues which need to be addressed when operating in standalone, or in bridge with vlan_filtering=0 modes, because in those cases the switch ports have VLAN awareness disabled, and changing the classified VLAN to anything other than the pvid causes the packets to be dropped. Another issue is that on egress, we expect port tagging to push the classified VLAN, but port tagging is disabled in the modes mentioned above, so although the classified VLAN is replaced, it is not visible in the packet transmitted by the switch. Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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