octeontx2-pf: Fix UDP/TCP src and dst port tc filters

commit 59e1be6f83 upstream.

Check the mask for non-zero value before installing tc filters
for L4 source and destination ports. Otherwise installing a
filter for source port installs destination port too and
vice-versa.

Fixes: 1d4d9e42c2 ("octeontx2-pf: Add tc flower hardware offload on ingress traffic")
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c

@@ -571,21 +571,27 @@ static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node,
 
 		flow_spec->dport = match.key->dst;
 		flow_mask->dport = match.mask->dst;
-		if (ip_proto == IPPROTO_UDP)
-			req->features |= BIT_ULL(NPC_DPORT_UDP);
-		else if (ip_proto == IPPROTO_TCP)
-			req->features |= BIT_ULL(NPC_DPORT_TCP);
-		else if (ip_proto == IPPROTO_SCTP)
-			req->features |= BIT_ULL(NPC_DPORT_SCTP);
+
+		if (flow_mask->dport) {
+			if (ip_proto == IPPROTO_UDP)
+				req->features |= BIT_ULL(NPC_DPORT_UDP);
+			else if (ip_proto == IPPROTO_TCP)
+				req->features |= BIT_ULL(NPC_DPORT_TCP);
+			else if (ip_proto == IPPROTO_SCTP)
+				req->features |= BIT_ULL(NPC_DPORT_SCTP);
+		}
 
 		flow_spec->sport = match.key->src;
 		flow_mask->sport = match.mask->src;
-		if (ip_proto == IPPROTO_UDP)
-			req->features |= BIT_ULL(NPC_SPORT_UDP);
-		else if (ip_proto == IPPROTO_TCP)
-			req->features |= BIT_ULL(NPC_SPORT_TCP);
-		else if (ip_proto == IPPROTO_SCTP)
-			req->features |= BIT_ULL(NPC_SPORT_SCTP);
+
+		if (flow_mask->sport) {
+			if (ip_proto == IPPROTO_UDP)
+				req->features |= BIT_ULL(NPC_SPORT_UDP);
+			else if (ip_proto == IPPROTO_TCP)
+				req->features |= BIT_ULL(NPC_SPORT_TCP);
+			else if (ip_proto == IPPROTO_SCTP)
+				req->features |= BIT_ULL(NPC_SPORT_SCTP);
+		}
 	}
 
 	return otx2_tc_parse_actions(nic, &rule->action, req, f, node);