net/mlx5/hws: fix tunnel protocol checks

[ upstream commit 28e69588f4170f29b73a04fc3bffba2596305782 ]

Align GRE, GTPU and VXLAN tunnel protocols to fail
in case the packet is already tunneled. Also use local
defines for protocol UDP ports for better layering of
mlx5dr API.

Fixes: c55c2bf ("net/mlx5/hws: add definer layer")
Fixes: 5bf14a4beb1a ("net/mlx5/hws: support matching on MPLSoUDP")

Signed-off-by: Alex Vesker <valex@nvidia.com>
Acked-by: Suanming Mou <suanmingm@nvidia.com>

drivers/net/mlx5/hws/mlx5dr_definer.c

@@ -8,7 +8,7 @@
 #define BAD_PORT	0xBAD
 #define ETH_TYPE_IPV4_VXLAN	0x0800
 #define ETH_TYPE_IPV6_VXLAN	0x86DD
-#define ETH_VXLAN_DEFAULT_PORT	4789
+#define UDP_VXLAN_PORT	4789
 
 #define STE_NO_VLAN	0x0
 #define STE_SVLAN	0x1
@@ -153,7 +153,7 @@ struct mlx5dr_definer_conv_data {
 	X(SET,		gtp_ext_hdr_pdu,	v->hdr.type,		rte_flow_item_gtp_psc) \
 	X(SET,		gtp_ext_hdr_qfi,	v->hdr.qfi,		rte_flow_item_gtp_psc) \
 	X(SET,		vxlan_flags,		v->flags,		rte_flow_item_vxlan) \
-	X(SET,		vxlan_udp_port,		ETH_VXLAN_DEFAULT_PORT,	rte_flow_item_vxlan) \
+	X(SET,		vxlan_udp_port,		UDP_VXLAN_PORT,		rte_flow_item_vxlan) \
 	X(SET,		source_qp,		v->queue,		mlx5_rte_flow_item_sq) \
 	X(SET,		tag,			v->data,		rte_flow_item_tag) \
 	X(SET,		metadata,		v->data,		rte_flow_item_meta) \
@@ -824,6 +824,12 @@ mlx5dr_definer_conv_item_gtp(struct mlx5dr_definer_conv_data *cd,
 	const struct rte_flow_item_gtp *m = item->mask;
 	struct mlx5dr_definer_fc *fc;
 
+	if (cd->tunnel) {
+		DR_LOG(ERR, "Inner GTPU item not supported");
+		rte_errno = ENOTSUP;
+		return rte_errno;
+	}
+
 	/* Overwrite GTPU dest port if not present */
 	fc = &cd->fc[DR_CALC_FNAME(L4_DPORT, false)];
 	if (!fc->tag_set && !cd->relaxed) {
@@ -996,9 +1002,13 @@ mlx5dr_definer_conv_item_vxlan(struct mlx5dr_definer_conv_data *cd,
 	struct mlx5dr_definer_fc *fc;
 	bool inner = cd->tunnel;
 
-	/* In order to match on VXLAN we must match on ether_type, ip_protocol
-	 * and l4_dport.
-	 */
+	if (inner) {
+		DR_LOG(ERR, "Inner VXLAN item not supported");
+		rte_errno = ENOTSUP;
+		return rte_errno;
+	}
+
+	/* In order to match on VXLAN we must match on ip_protocol and l4_dport */
 	if (!cd->relaxed) {
 		fc = &cd->fc[DR_CALC_FNAME(IP_PROTOCOL, inner)];
 		if (!fc->tag_set) {
@@ -1021,12 +1031,6 @@ mlx5dr_definer_conv_item_vxlan(struct mlx5dr_definer_conv_data *cd,
 		return 0;
 
 	if (m->flags) {
-		if (inner) {
-			DR_LOG(ERR, "Inner VXLAN flags item not supported");
-			rte_errno = ENOTSUP;
-			return rte_errno;
-		}
-
 		fc = &cd->fc[MLX5DR_DEFINER_FNAME_VXLAN_FLAGS];
 		fc->item_idx = item_idx;
 		fc->tag_set = &mlx5dr_definer_vxlan_flags_set;
@@ -1036,12 +1040,6 @@ mlx5dr_definer_conv_item_vxlan(struct mlx5dr_definer_conv_data *cd,
 	}
 
 	if (!is_mem_zero(m->vni, 3)) {
-		if (inner) {
-			DR_LOG(ERR, "Inner VXLAN vni item not supported");
-			rte_errno = ENOTSUP;
-			return rte_errno;
-		}
-
 		fc = &cd->fc[MLX5DR_DEFINER_FNAME_VXLAN_VNI];
 		fc->item_idx = item_idx;
 		fc->tag_set = &mlx5dr_definer_vxlan_vni_set;