net/mlx5: DR, Add support for Geneve packets SW steering

Add support for SW steering matching on Geneve header fields:
 - VNI
 - OAM
 - protocol type
 - options length

Signed-off-by: Yevgeny Kliteynik <[email protected]>
Reviewed-by: Alex Vesker <[email protected]>
Signed-off-by: Saeed Mahameed <[email protected]>

Author: Yevgeny Kliteynik

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

@@ -125,6 +125,29 @@ dr_mask_is_flex_parser_tnl_vxlan_gpe_set(struct mlx5dr_match_param *mask,
 	       dr_matcher_supp_flex_parser_vxlan_gpe(&dmn->info.caps);
 }
 
+static bool dr_mask_is_misc_geneve_set(struct mlx5dr_match_misc *misc)
+{
+	return misc->geneve_vni ||
+	       misc->geneve_oam ||
+	       misc->geneve_protocol_type ||
+	       misc->geneve_opt_len;
+}
+
+static bool
+dr_matcher_supp_flex_parser_geneve(struct mlx5dr_cmd_caps *caps)
+{
+	return caps->flex_protocols &
+	       MLX5_FLEX_PARSER_GENEVE_ENABLED;
+}
+
+static bool
+dr_mask_is_flex_parser_tnl_geneve_set(struct mlx5dr_match_param *mask,
+				      struct mlx5dr_domain *dmn)
+{
+	return dr_mask_is_misc_geneve_set(&mask->misc) &&
+	       dr_matcher_supp_flex_parser_geneve(&dmn->info.caps);
+}
+
 static bool dr_mask_is_flex_parser_icmpv6_set(struct mlx5dr_match_misc3 *misc3)
 {
 	return (misc3->icmpv6_type || misc3->icmpv6_code ||
@@ -275,6 +298,10 @@ static int dr_matcher_set_ste_builders(struct mlx5dr_matcher *matcher,
 			mlx5dr_ste_build_flex_parser_tnl_vxlan_gpe(&sb[idx++],
 								   &mask,
 								   inner, rx);
+		else if (dr_mask_is_flex_parser_tnl_geneve_set(&mask, dmn))
+			mlx5dr_ste_build_flex_parser_tnl_geneve(&sb[idx++],
+								&mask,
+								inner, rx);
 
 		if (DR_MASK_IS_ETH_L4_MISC_SET(mask.misc3, outer))
 			mlx5dr_ste_build_eth_l4_misc(&sb[idx++], &mask, inner, rx);

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

@@ -2156,6 +2156,59 @@ void mlx5dr_ste_build_flex_parser_tnl_vxlan_gpe(struct mlx5dr_ste_build *sb,
 	sb->ste_build_tag_func = &dr_ste_build_flex_parser_tnl_vxlan_gpe_tag;
 }
 
+static void
+dr_ste_build_flex_parser_tnl_geneve_bit_mask(struct mlx5dr_match_param *value,
+					     u8 *bit_mask)
+{
+	struct mlx5dr_match_misc *misc_mask = &value->misc;
+
+	DR_STE_SET_MASK_V(flex_parser_tnl_geneve, bit_mask,
+			  geneve_protocol_type,
+			  misc_mask, geneve_protocol_type);
+	DR_STE_SET_MASK_V(flex_parser_tnl_geneve, bit_mask,
+			  geneve_oam,
+			  misc_mask, geneve_oam);
+	DR_STE_SET_MASK_V(flex_parser_tnl_geneve, bit_mask,
+			  geneve_opt_len,
+			  misc_mask, geneve_opt_len);
+	DR_STE_SET_MASK_V(flex_parser_tnl_geneve, bit_mask,
+			  geneve_vni,
+			  misc_mask, geneve_vni);
+}
+
+static int
+dr_ste_build_flex_parser_tnl_geneve_tag(struct mlx5dr_match_param *value,
+					struct mlx5dr_ste_build *sb,
+					u8 *hw_ste_p)
+{
+	struct dr_hw_ste_format *hw_ste = (struct dr_hw_ste_format *)hw_ste_p;
+	struct mlx5dr_match_misc *misc = &value->misc;
+	u8 *tag = hw_ste->tag;
+
+	DR_STE_SET_TAG(flex_parser_tnl_geneve, tag,
+		       geneve_protocol_type, misc, geneve_protocol_type);
+	DR_STE_SET_TAG(flex_parser_tnl_geneve, tag,
+		       geneve_oam, misc, geneve_oam);
+	DR_STE_SET_TAG(flex_parser_tnl_geneve, tag,
+		       geneve_opt_len, misc, geneve_opt_len);
+	DR_STE_SET_TAG(flex_parser_tnl_geneve, tag,
+		       geneve_vni, misc, geneve_vni);
+
+	return 0;
+}
+
+void mlx5dr_ste_build_flex_parser_tnl_geneve(struct mlx5dr_ste_build *sb,
+					     struct mlx5dr_match_param *mask,
+					     bool inner, bool rx)
+{
+	dr_ste_build_flex_parser_tnl_geneve_bit_mask(mask, sb->bit_mask);
+	sb->rx = rx;
+	sb->inner = inner;
+	sb->lu_type = MLX5DR_STE_LU_TYPE_FLEX_PARSER_TNL_HEADER;
+	sb->byte_mask = dr_ste_conv_bit_to_byte_mask(sb->bit_mask);
+	sb->ste_build_tag_func = &dr_ste_build_flex_parser_tnl_geneve_tag;
+}
+
 static void dr_ste_build_register_0_bit_mask(struct mlx5dr_match_param *value,
 					     u8 *bit_mask)
 {

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

@@ -328,6 +328,9 @@ int mlx5dr_ste_build_flex_parser_1(struct mlx5dr_ste_build *sb,
 void mlx5dr_ste_build_flex_parser_tnl_vxlan_gpe(struct mlx5dr_ste_build *sb,
 						struct mlx5dr_match_param *mask,
 						bool inner, bool rx);
+void mlx5dr_ste_build_flex_parser_tnl_geneve(struct mlx5dr_ste_build *sb,
+					     struct mlx5dr_match_param *mask,
+					     bool inner, bool rx);
 void mlx5dr_ste_build_general_purpose(struct mlx5dr_ste_build *sb,
 				      struct mlx5dr_match_param *mask,
 				      bool inner, bool rx);