net/mlx5: DR, Set STEv0 ICMP flex parser dynamically

Set the flex parser ID dynamicly for ICMP instead of relying
on hardcoded values.
Signed-off-by: Muhammad Sammar <muhammads@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_matcher.c

@@ -376,13 +376,11 @@ static int dr_matcher_set_ste_builders(struct mlx5dr_matcher *matcher,
 			mlx5dr_ste_build_tnl_mpls(ste_ctx, &sb[idx++],
 						  &mask, inner, rx);
 
-		if (dr_mask_is_icmp(&mask, dmn)) {
-			ret = mlx5dr_ste_build_icmp(ste_ctx, &sb[idx++],
-						    &mask, &dmn->info.caps,
-						    inner, rx);
-			if (ret)
-				return ret;
-		}
+		if (dr_mask_is_icmp(&mask, dmn))
+			mlx5dr_ste_build_icmp(ste_ctx, &sb[idx++],
+					      &mask, &dmn->info.caps,
+					      inner, rx);
+
 		if (dr_mask_is_tnl_gre_set(&mask.misc))
 			mlx5dr_ste_build_tnl_gre(ste_ctx, &sb[idx++],
 						 &mask, inner, rx);

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c

@@ -1095,16 +1095,16 @@ void mlx5dr_ste_build_tnl_mpls(struct mlx5dr_ste_ctx *ste_ctx,
 	ste_ctx->build_tnl_mpls_init(sb, mask);
 }
 
-int mlx5dr_ste_build_icmp(struct mlx5dr_ste_ctx *ste_ctx,
-			  struct mlx5dr_ste_build *sb,
-			  struct mlx5dr_match_param *mask,
-			  struct mlx5dr_cmd_caps *caps,
-			  bool inner, bool rx)
+void mlx5dr_ste_build_icmp(struct mlx5dr_ste_ctx *ste_ctx,
+			   struct mlx5dr_ste_build *sb,
+			   struct mlx5dr_match_param *mask,
+			   struct mlx5dr_cmd_caps *caps,
+			   bool inner, bool rx)
 {
 	sb->rx = rx;
 	sb->inner = inner;
 	sb->caps = caps;
-	return ste_ctx->build_icmp_init(sb, mask);
+	ste_ctx->build_icmp_init(sb, mask);
 }
 
 void mlx5dr_ste_build_general_purpose(struct mlx5dr_ste_ctx *ste_ctx,

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.h

@@ -120,7 +120,7 @@ struct mlx5dr_ste_ctx {
 	void DR_STE_CTX_BUILDER(mpls);
 	void DR_STE_CTX_BUILDER(tnl_gre);
 	void DR_STE_CTX_BUILDER(tnl_mpls);
-	int  DR_STE_CTX_BUILDER(icmp);
+	void DR_STE_CTX_BUILDER(icmp);
 	void DR_STE_CTX_BUILDER(general_purpose);
 	void DR_STE_CTX_BUILDER(eth_l4_misc);
 	void DR_STE_CTX_BUILDER(tnl_vxlan_gpe);

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v0.c

@@ -1297,9 +1297,11 @@ dr_ste_v0_build_icmp_tag(struct mlx5dr_match_param *value,
 	u32 *icmp_header_data;
 	int dw0_location;
 	int dw1_location;
+	u8 *parser_ptr;
 	u8 *icmp_type;
 	u8 *icmp_code;
 	bool is_ipv4;
+	u32 icmp_hdr;
 
 	is_ipv4 = DR_MASK_IS_ICMPV4_SET(misc_3);
 	if (is_ipv4) {
@@ -1316,47 +1318,40 @@ dr_ste_v0_build_icmp_tag(struct mlx5dr_match_param *value,
 		dw1_location		= sb->caps->flex_parser_id_icmpv6_dw1;
 	}
 
-	switch (dw0_location) {
-	case 4:
-		MLX5_SET(ste_flex_parser_1, tag, flex_parser_4,
-			 (*icmp_type << ICMP_TYPE_OFFSET_FIRST_DW) |
-			 (*icmp_code << ICMP_TYPE_OFFSET_FIRST_DW));
-
-		*icmp_type = 0;
-		*icmp_code = 0;
-		break;
-	default:
-		return -EINVAL;
-	}
+	parser_ptr = dr_ste_calc_flex_parser_offset(tag, dw0_location);
+	icmp_hdr = (*icmp_type << ICMP_TYPE_OFFSET_FIRST_DW) |
+		   (*icmp_code << ICMP_CODE_OFFSET_FIRST_DW);
+	*(__be32 *)parser_ptr = cpu_to_be32(icmp_hdr);
+	*icmp_code = 0;
+	*icmp_type = 0;
 
-	switch (dw1_location) {
-	case 5:
-		MLX5_SET(ste_flex_parser_1, tag, flex_parser_5,
-			 *icmp_header_data);
-		*icmp_header_data = 0;
-		break;
-	default:
-		return -EINVAL;
-	}
+	parser_ptr = dr_ste_calc_flex_parser_offset(tag, dw1_location);
+	*(__be32 *)parser_ptr = cpu_to_be32(*icmp_header_data);
+	*icmp_header_data = 0;
 
 	return 0;
 }
 
-static int
+static void
 dr_ste_v0_build_icmp_init(struct mlx5dr_ste_build *sb,
 			  struct mlx5dr_match_param *mask)
 {
-	int ret;
+	u8 parser_id;
+	bool is_ipv4;
 
-	ret = dr_ste_v0_build_icmp_tag(mask, sb, sb->bit_mask);
-	if (ret)
-		return ret;
+	dr_ste_v0_build_icmp_tag(mask, sb, sb->bit_mask);
 
-	sb->lu_type = DR_STE_V0_LU_TYPE_FLEX_PARSER_1;
+	/* STEs with lookup type FLEX_PARSER_{0/1} includes
+	 * flex parsers_{0-3}/{4-7} respectively.
+	 */
+	is_ipv4 = DR_MASK_IS_ICMPV4_SET(&mask->misc3);
+	parser_id = is_ipv4 ? sb->caps->flex_parser_id_icmp_dw0 :
+		    sb->caps->flex_parser_id_icmpv6_dw0;
+	sb->lu_type = parser_id > DR_STE_MAX_FLEX_0_ID ?
+		      DR_STE_V0_LU_TYPE_FLEX_PARSER_1 :
+		      DR_STE_V0_LU_TYPE_FLEX_PARSER_0;
 	sb->byte_mask = mlx5dr_ste_conv_bit_to_byte_mask(sb->bit_mask);
 	sb->ste_build_tag_func = &dr_ste_v0_build_icmp_tag;
-
-	return 0;
 }
 
 static int

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v1.c

@@ -1337,16 +1337,14 @@ static int dr_ste_v1_build_icmp_tag(struct mlx5dr_match_param *value,
 	return 0;
 }
 
-static int dr_ste_v1_build_icmp_init(struct mlx5dr_ste_build *sb,
-				     struct mlx5dr_match_param *mask)
+static void dr_ste_v1_build_icmp_init(struct mlx5dr_ste_build *sb,
+				      struct mlx5dr_match_param *mask)
 {
 	dr_ste_v1_build_icmp_tag(mask, sb, sb->bit_mask);
 
 	sb->lu_type = DR_STE_V1_LU_TYPE_ETHL4_MISC_O;
 	sb->byte_mask = mlx5dr_ste_conv_bit_to_byte_mask(sb->bit_mask);
 	sb->ste_build_tag_func = &dr_ste_v1_build_icmp_tag;
-
-	return 0;
 }
 
 static int dr_ste_v1_build_general_purpose_tag(struct mlx5dr_match_param *value,

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h

@@ -393,11 +393,11 @@ void mlx5dr_ste_build_tnl_mpls(struct mlx5dr_ste_ctx *ste_ctx,
 			       struct mlx5dr_ste_build *sb,
 			       struct mlx5dr_match_param *mask,
 			       bool inner, bool rx);
-int mlx5dr_ste_build_icmp(struct mlx5dr_ste_ctx *ste_ctx,
-			  struct mlx5dr_ste_build *sb,
-			  struct mlx5dr_match_param *mask,
-			  struct mlx5dr_cmd_caps *caps,
-			  bool inner, bool rx);
+void mlx5dr_ste_build_icmp(struct mlx5dr_ste_ctx *ste_ctx,
+			   struct mlx5dr_ste_build *sb,
+			   struct mlx5dr_match_param *mask,
+			   struct mlx5dr_cmd_caps *caps,
+			   bool inner, bool rx);
 void mlx5dr_ste_build_tnl_vxlan_gpe(struct mlx5dr_ste_ctx *ste_ctx,
 				    struct mlx5dr_ste_build *sb,
 				    struct mlx5dr_match_param *mask,