net/bnxt: fix handling of null flow mask

[ upstream commit dea1afc ]

When the mask field of an rte_flow pattern item is NULL,
the default mask for that item type should be used.

Fixes: 5ef3b79 ("net/bnxt: support flow filter ops")

Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>

drivers/net/bnxt/bnxt_flow.c

@@ -188,11 +188,15 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
 				PMD_DRV_LOG(DEBUG, "Parse inner header\n");
 			break;
 		case RTE_FLOW_ITEM_TYPE_ETH:
-			if (!item->spec || !item->mask)
+			if (!item->spec)
 				break;
 
 			eth_spec = item->spec;
-			eth_mask = item->mask;
+
+			if (item->mask)
+				eth_mask = item->mask;
+			else
+				eth_mask = &rte_flow_item_eth_mask;
 
 			/* Source MAC address mask cannot be partially set.
 			 * Should be All 0's or all 1's.
@@ -281,7 +285,12 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
 			break;
 		case RTE_FLOW_ITEM_TYPE_VLAN:
 			vlan_spec = item->spec;
-			vlan_mask = item->mask;
+
+			if (item->mask)
+				vlan_mask = item->mask;
+			else
+				vlan_mask = &rte_flow_item_vlan_mask;
+
 			if (en & en_ethertype) {
 				rte_flow_error_set(error, EINVAL,
 						   RTE_FLOW_ERROR_TYPE_ITEM,
@@ -324,11 +333,15 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
 		case RTE_FLOW_ITEM_TYPE_IPV4:
 			/* If mask is not involved, we could use EM filters. */
 			ipv4_spec = item->spec;
-			ipv4_mask = item->mask;
 
-			if (!item->spec || !item->mask)
+			if (!item->spec)
 				break;
 
+			if (item->mask)
+				ipv4_mask = item->mask;
+			else
+				ipv4_mask = &rte_flow_item_ipv4_mask;
+
 			/* Only IP DST and SRC fields are maskable. */
 			if (ipv4_mask->hdr.version_ihl ||
 			    ipv4_mask->hdr.type_of_service ||
@@ -385,11 +398,15 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
 			break;
 		case RTE_FLOW_ITEM_TYPE_IPV6:
 			ipv6_spec = item->spec;
-			ipv6_mask = item->mask;
 
-			if (!item->spec || !item->mask)
+			if (!item->spec)
 				break;
 
+			if (item->mask)
+				ipv6_mask = item->mask;
+			else
+				ipv6_mask = &rte_flow_item_ipv6_mask;
+
 			/* Only IP DST and SRC fields are maskable. */
 			if (ipv6_mask->hdr.vtc_flow ||
 			    ipv6_mask->hdr.payload_len ||
@@ -437,11 +454,15 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
 			break;
 		case RTE_FLOW_ITEM_TYPE_TCP:
 			tcp_spec = item->spec;
-			tcp_mask = item->mask;
 
-			if (!item->spec || !item->mask)
+			if (!item->spec)
 				break;
 
+			if (item->mask)
+				tcp_mask = item->mask;
+			else
+				tcp_mask = &rte_flow_item_tcp_mask;
+
 			/* Check TCP mask. Only DST & SRC ports are maskable */
 			if (tcp_mask->hdr.sent_seq ||
 			    tcp_mask->hdr.recv_ack ||
@@ -482,11 +503,15 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
 			break;
 		case RTE_FLOW_ITEM_TYPE_UDP:
 			udp_spec = item->spec;
-			udp_mask = item->mask;
 
-			if (!item->spec || !item->mask)
+			if (!item->spec)
 				break;
 
+			if (item->mask)
+				udp_mask = item->mask;
+			else
+				udp_mask = &rte_flow_item_udp_mask;
+
 			if (udp_mask->hdr.dgram_len ||
 			    udp_mask->hdr.dgram_cksum) {
 				rte_flow_error_set(error,