[dpdk-dev] [PATCH] net/ice: add support for src MAC filter on FDIR

[Zhirun Yan <zhirun.yan@intel.com>]

This patch enables FDIR with src mac filter and change the logic for
only supporting ether type field without IP pattern. Application may
set ether type with IP. It is redundant for flow, ignore ether type
except for ICE_FLTR_PTYPE_NON_IP_L2.

Also, remove redundant code for checking next_type.

Signed-off-by: Zhirun Yan <zhirun.yan@intel.com>
---
 drivers/net/ice/ice_fdir_filter.c | 63 +++++++++++++------------------
 1 file changed, 26 insertions(+), 37 deletions(-)

diff --git a/drivers/net/ice/ice_fdir_filter.c b/drivers/net/ice/ice_fdir_filter.c
index c0f89db83..48d3fdec8 100644
--- a/drivers/net/ice/ice_fdir_filter.c
+++ b/drivers/net/ice/ice_fdir_filter.c
@@ -19,10 +19,10 @@
 #define ICE_FDIR_MAX_QREGION_SIZE	128
 
 #define ICE_FDIR_INSET_ETH (\
-	ICE_INSET_ETHERTYPE)
+	ICE_INSET_DMAC | ICE_INSET_SMAC | ICE_INSET_ETHERTYPE)
 
 #define ICE_FDIR_INSET_ETH_IPV4 (\
-	ICE_INSET_DMAC | \
+	ICE_FDIR_INSET_ETH | \
 	ICE_INSET_IPV4_SRC | ICE_INSET_IPV4_DST | ICE_INSET_IPV4_TOS | \
 	ICE_INSET_IPV4_TTL | ICE_INSET_IPV4_PROTO)
 
@@ -1620,9 +1620,8 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
 		0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
 	};
 	uint32_t vtc_flow_cpu;
-
-	enum rte_flow_item_type next_type;
 	uint16_t ether_type;
+	enum rte_flow_item_type next_type;
 
 	for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
 		if (item->last) {
@@ -1640,50 +1639,40 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
 			eth_mask = item->mask;
 			next_type = (item + 1)->type;
 
-			if (next_type == RTE_FLOW_ITEM_TYPE_END &&
-				(!eth_spec || !eth_mask)) {
-				rte_flow_error_set(error, EINVAL,
-					RTE_FLOW_ERROR_TYPE_ITEM,
-					item, "NULL eth spec/mask.");
-				return -rte_errno;
-			}
-
 			if (eth_spec && eth_mask) {
-				if (!rte_is_zero_ether_addr(&eth_spec->src) ||
-				    !rte_is_zero_ether_addr(&eth_mask->src)) {
-					rte_flow_error_set(error, EINVAL,
-						RTE_FLOW_ERROR_TYPE_ITEM,
-						item,
-						"Src mac not support");
-					return -rte_errno;
-				}
-
-				if (rte_is_broadcast_ether_addr(&eth_mask->dst)) {
+				if (!rte_is_zero_ether_addr(&eth_mask->dst)) {
 					input_set |= ICE_INSET_DMAC;
 					rte_memcpy(&filter->input.ext_data.dst_mac,
-						&eth_spec->dst,
-						RTE_ETHER_ADDR_LEN);
-				} else if (eth_mask->type == RTE_BE16(0xffff)) {
+						   &eth_spec->dst,
+						   RTE_ETHER_ADDR_LEN);
+				}
+
+				if (!rte_is_zero_ether_addr(&eth_mask->src)) {
+					input_set |= ICE_INSET_SMAC;
+					rte_memcpy(&filter->input.ext_data.src_mac,
+						   &eth_spec->src,
+						   RTE_ETHER_ADDR_LEN);
+				}
+
+				/* Ignore this field except for ICE_FLTR_PTYPE_NON_IP_L2 */
+				if (eth_mask->type == RTE_BE16(0xffff) &&
+				    next_type == RTE_FLOW_ITEM_TYPE_END) {
+					input_set |= ICE_INSET_ETHERTYPE;
 					ether_type = rte_be_to_cpu_16(eth_spec->type);
+
 					if (ether_type == RTE_ETHER_TYPE_IPV4 ||
-						ether_type == RTE_ETHER_TYPE_IPV6) {
+					    ether_type == RTE_ETHER_TYPE_IPV6) {
 						rte_flow_error_set(error, EINVAL,
-							RTE_FLOW_ERROR_TYPE_ITEM,
-							item,
-							"Unsupported ether_type.");
+								   RTE_FLOW_ERROR_TYPE_ITEM,
+								   item,
+								   "Unsupported ether_type.");
 						return -rte_errno;
 					}
 
-					input_set |= ICE_INSET_ETHERTYPE;
 					rte_memcpy(&filter->input.ext_data.ether_type,
-						&eth_spec->type,
-						sizeof(eth_spec->type));
+						   &eth_spec->type,
+						   sizeof(eth_spec->type));
 					flow_type = ICE_FLTR_PTYPE_NON_IP_L2;
-				} else {
-					rte_flow_error_set(error, EINVAL,
-						RTE_FLOW_ERROR_TYPE_ITEM,
-						item,
-						"Invalid dst mac addr mask or ethertype mask");
 				}
 			}
 			break;
-- 
2.17.1