ice: Add support for inner etype in switchdev

Enable support for adding TC rules that filter on the inner
EtherType field of tunneled packet headers.
Signed-off-by: Martyna Szapar-Mudlaw <martyna.szapar-mudlaw@intel.com>
Reviewed-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/ice/ice_protocol_type.h

@@ -29,6 +29,7 @@ enum ice_protocol_type {
 	ICE_MAC_OFOS = 0,
 	ICE_MAC_IL,
 	ICE_ETYPE_OL,
+	ICE_ETYPE_IL,
 	ICE_VLAN_OFOS,
 	ICE_IPV4_OFOS,
 	ICE_IPV4_IL,
@@ -92,6 +93,7 @@ enum ice_prot_id {
 #define ICE_MAC_OFOS_HW		1
 #define ICE_MAC_IL_HW		4
 #define ICE_ETYPE_OL_HW		9
+#define ICE_ETYPE_IL_HW		10
 #define ICE_VLAN_OF_HW		16
 #define ICE_VLAN_OL_HW		17
 #define ICE_IPV4_OFOS_HW	32

drivers/net/ethernet/intel/ice/ice_tc_lib.c

@@ -33,9 +33,7 @@ ice_tc_count_lkups(u32 flags, struct ice_tc_flower_lyr_2_4_hdrs *headers,
 	if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT)
 		lkups_cnt++;
 
-	/* currently inner etype filter isn't supported */
-	if ((flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) &&
-	    fltr->tunnel_type == TNL_LAST)
+	if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID)
 		lkups_cnt++;
 
 	/* are MAC fields specified? */
@@ -64,6 +62,11 @@ static enum ice_protocol_type ice_proto_type_from_mac(bool inner)
 	return inner ? ICE_MAC_IL : ICE_MAC_OFOS;
 }
 
+static enum ice_protocol_type ice_proto_type_from_etype(bool inner)
+{
+	return inner ? ICE_ETYPE_IL : ICE_ETYPE_OL;
+}
+
 static enum ice_protocol_type ice_proto_type_from_ipv4(bool inner)
 {
 	return inner ? ICE_IPV4_IL : ICE_IPV4_OFOS;
@@ -224,8 +227,10 @@ ice_tc_fill_rules(struct ice_hw *hw, u32 flags,
 
 		headers = &tc_fltr->inner_headers;
 		inner = true;
-	} else if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) {
-		list[i].type = ICE_ETYPE_OL;
+	}
+
+	if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) {
+		list[i].type = ice_proto_type_from_etype(inner);
 		list[i].h_u.ethertype.ethtype_id = headers->l2_key.n_proto;
 		list[i].m_u.ethertype.ethtype_id = headers->l2_mask.n_proto;
 		i++;