ice: refactor ICE_TC_FLWR_FIELD_ENC_OPTS

FLOW_DISSECTOR_KEY_ENC_OPTS can be used for multiple headers, but currently
it is treated as GTP-exclusive in ice. Rename ICE_TC_FLWR_FIELD_ENC_OPTS to
ICE_TC_FLWR_FIELD_GTP_OPTS and check for tunnel type earlier. After this
refactor, it is easier to add new headers using FLOW_DISSECTOR_KEY_ENC_OPTS
- instead of checking tunnel type in ice_tc_count_lkups() and
ice_tc_fill_tunnel_outer(), it needs to be checked only once, in
ice_parse_tunnel_attr().
Signed-off-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -35,7 +35,7 @@ ice_tc_count_lkups(u32 flags, struct ice_tc_flower_lyr_2_4_hdrs *headers,
 	if (flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC)
 		lkups_cnt++;
 
-	if (flags & ICE_TC_FLWR_FIELD_ENC_OPTS)
+	if (flags & ICE_TC_FLWR_FIELD_GTP_OPTS)
 		lkups_cnt++;
 
 	if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 |
@@ -219,8 +219,7 @@ ice_tc_fill_tunnel_outer(u32 flags, struct ice_tc_flower_fltr *fltr,
 		i++;
 	}
 
-	if (flags & ICE_TC_FLWR_FIELD_ENC_OPTS &&
-	    (fltr->tunnel_type == TNL_GTPU || fltr->tunnel_type == TNL_GTPC)) {
+	if (flags & ICE_TC_FLWR_FIELD_GTP_OPTS) {
 		list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type);
 
 		if (fltr->gtp_pdu_info_masks.pdu_type) {
@@ -1401,7 +1400,8 @@ ice_parse_tunnel_attr(struct net_device *dev, struct flow_rule *rule,
 		}
 	}
 
-	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_OPTS)) {
+	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_OPTS) &&
+	    (fltr->tunnel_type == TNL_GTPU || fltr->tunnel_type == TNL_GTPC)) {
 		struct flow_match_enc_opts match;
 
 		flow_rule_match_enc_opts(rule, &match);
@@ -1412,7 +1412,7 @@ ice_parse_tunnel_attr(struct net_device *dev, struct flow_rule *rule,
 		memcpy(&fltr->gtp_pdu_info_masks, &match.mask->data[0],
 		       sizeof(struct gtp_pdu_session_info));
 
-		fltr->flags |= ICE_TC_FLWR_FIELD_ENC_OPTS;
+		fltr->flags |= ICE_TC_FLWR_FIELD_GTP_OPTS;
 	}
 
 	return 0;

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

@@ -22,7 +22,7 @@
 #define ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT	BIT(15)
 #define ICE_TC_FLWR_FIELD_ENC_DST_MAC		BIT(16)
 #define ICE_TC_FLWR_FIELD_ETH_TYPE_ID		BIT(17)
-#define ICE_TC_FLWR_FIELD_ENC_OPTS		BIT(18)
+#define ICE_TC_FLWR_FIELD_GTP_OPTS		BIT(18)
 #define ICE_TC_FLWR_FIELD_CVLAN			BIT(19)
 #define ICE_TC_FLWR_FIELD_PPPOE_SESSID		BIT(20)
 #define ICE_TC_FLWR_FIELD_PPP_PROTO		BIT(21)