netdev - [PATCH iwl-next v3 1/2] ice: Remove unnecessary argument from ice_fdir_comp

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Message-Id: <20231214043449.15835-2-lukasz.plachno@intel.com>
Date: Thu, 14 Dec 2023 05:34:48 +0100
From: Lukasz Plachno <lukasz.plachno@...el.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
	Lukasz Plachno <lukasz.plachno@...el.com>,
	Przemek Kitszel <przemyslaw.kitszel@...el.com>
Subject: [PATCH iwl-next v3 1/2] ice: Remove unnecessary argument from ice_fdir_comp_rules()

Passing v6 argument is unnecessary as flow_type is still
analyzed inside the function.

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Signed-off-by: Lukasz Plachno <lukasz.plachno@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_fdir.c | 85 +++++++++++------------
 1 file changed, 39 insertions(+), 46 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_fdir.c b/drivers/net/ethernet/intel/ice/ice_fdir.c
index ae089d32ee9d..d6053cdad686 100644
--- a/drivers/net/ethernet/intel/ice/ice_fdir.c
+++ b/drivers/net/ethernet/intel/ice/ice_fdir.c
@@ -1212,52 +1212,54 @@ static int ice_cmp_ipv6_addr(__be32 *a, __be32 *b)
  * ice_fdir_comp_rules - compare 2 filters
  * @a: a Flow Director filter data structure
  * @b: a Flow Director filter data structure
- * @v6: bool true if v6 filter
  *
  * Returns true if the filters match
  */
 static bool
-ice_fdir_comp_rules(struct ice_fdir_fltr *a,  struct ice_fdir_fltr *b, bool v6)
+ice_fdir_comp_rules(struct ice_fdir_fltr *a,  struct ice_fdir_fltr *b)
 {
 	enum ice_fltr_ptype flow_type = a->flow_type;
 
 	/* The calling function already checks that the two filters have the
 	 * same flow_type.
 	 */
-	if (!v6) {
-		if (flow_type == ICE_FLTR_PTYPE_NONF_IPV4_TCP ||
-		    flow_type == ICE_FLTR_PTYPE_NONF_IPV4_UDP ||
-		    flow_type == ICE_FLTR_PTYPE_NONF_IPV4_SCTP) {
-			if (a->ip.v4.dst_ip == b->ip.v4.dst_ip &&
-			    a->ip.v4.src_ip == b->ip.v4.src_ip &&
-			    a->ip.v4.dst_port == b->ip.v4.dst_port &&
-			    a->ip.v4.src_port == b->ip.v4.src_port)
-				return true;
-		} else if (flow_type == ICE_FLTR_PTYPE_NONF_IPV4_OTHER) {
-			if (a->ip.v4.dst_ip == b->ip.v4.dst_ip &&
-			    a->ip.v4.src_ip == b->ip.v4.src_ip &&
-			    a->ip.v4.l4_header == b->ip.v4.l4_header &&
-			    a->ip.v4.proto == b->ip.v4.proto &&
-			    a->ip.v4.ip_ver == b->ip.v4.ip_ver &&
-			    a->ip.v4.tos == b->ip.v4.tos)
-				return true;
-		}
-	} else {
-		if (flow_type == ICE_FLTR_PTYPE_NONF_IPV6_UDP ||
-		    flow_type == ICE_FLTR_PTYPE_NONF_IPV6_TCP ||
-		    flow_type == ICE_FLTR_PTYPE_NONF_IPV6_SCTP) {
-			if (a->ip.v6.dst_port == b->ip.v6.dst_port &&
-			    a->ip.v6.src_port == b->ip.v6.src_port &&
-			    !ice_cmp_ipv6_addr(a->ip.v6.dst_ip,
-					       b->ip.v6.dst_ip) &&
-			    !ice_cmp_ipv6_addr(a->ip.v6.src_ip,
-					       b->ip.v6.src_ip))
-				return true;
-		} else if (flow_type == ICE_FLTR_PTYPE_NONF_IPV6_OTHER) {
-			if (a->ip.v6.dst_port == b->ip.v6.dst_port &&
-			    a->ip.v6.src_port == b->ip.v6.src_port)
-				return true;
-		}
+	switch (flow_type) {
+	case ICE_FLTR_PTYPE_NONF_IPV4_TCP:
+	case ICE_FLTR_PTYPE_NONF_IPV4_UDP:
+	case ICE_FLTR_PTYPE_NONF_IPV4_SCTP:
+		if (a->ip.v4.dst_ip == b->ip.v4.dst_ip &&
+		    a->ip.v4.src_ip == b->ip.v4.src_ip &&
+		    a->ip.v4.dst_port == b->ip.v4.dst_port &&
+		    a->ip.v4.src_port == b->ip.v4.src_port)
+			return true;
+		break;
+	case ICE_FLTR_PTYPE_NONF_IPV4_OTHER:
+		if (a->ip.v4.dst_ip == b->ip.v4.dst_ip &&
+		    a->ip.v4.src_ip == b->ip.v4.src_ip &&
+		    a->ip.v4.l4_header == b->ip.v4.l4_header &&
+		    a->ip.v4.proto == b->ip.v4.proto &&
+		    a->ip.v4.ip_ver == b->ip.v4.ip_ver &&
+		    a->ip.v4.tos == b->ip.v4.tos)
+			return true;
+		break;
+	case ICE_FLTR_PTYPE_NONF_IPV6_UDP:
+	case ICE_FLTR_PTYPE_NONF_IPV6_TCP:
+	case ICE_FLTR_PTYPE_NONF_IPV6_SCTP:
+		if (a->ip.v6.dst_port == b->ip.v6.dst_port &&
+		    a->ip.v6.src_port == b->ip.v6.src_port &&
+		    !ice_cmp_ipv6_addr(a->ip.v6.dst_ip,
+				       b->ip.v6.dst_ip) &&
+		    !ice_cmp_ipv6_addr(a->ip.v6.src_ip,
+				       b->ip.v6.src_ip))
+			return true;
+		break;
+	case ICE_FLTR_PTYPE_NONF_IPV6_OTHER:
+		if (a->ip.v6.dst_port == b->ip.v6.dst_port &&
+		    a->ip.v6.src_port == b->ip.v6.src_port)
+			return true;
+		break;
+	default:
+		break;
 	}
 
 	return false;
@@ -1276,19 +1278,10 @@ bool ice_fdir_is_dup_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input)
 	bool ret = false;
 
 	list_for_each_entry(rule, &hw->fdir_list_head, fltr_node) {
-		enum ice_fltr_ptype flow_type;
-
 		if (rule->flow_type != input->flow_type)
 			continue;
 
-		flow_type = input->flow_type;
-		if (flow_type == ICE_FLTR_PTYPE_NONF_IPV4_TCP ||
-		    flow_type == ICE_FLTR_PTYPE_NONF_IPV4_UDP ||
-		    flow_type == ICE_FLTR_PTYPE_NONF_IPV4_SCTP ||
-		    flow_type == ICE_FLTR_PTYPE_NONF_IPV4_OTHER)
-			ret = ice_fdir_comp_rules(rule, input, false);
-		else
-			ret = ice_fdir_comp_rules(rule, input, true);
+		ret = ice_fdir_comp_rules(rule, input);
 		if (ret) {
 			if (rule->fltr_id == input->fltr_id &&
 			    rule->q_index != input->q_index)
-- 
2.34.1