ice: Add more advanced protocol support in flow filter

Add more protocol support in flow filter, these
include PPPoE, L2TPv3, GTP, PFCP, ESP and AH.

Signed-off-by: Ting Xu <ting.xu@intel.com>
Signed-off-by: Yahui Cao <yahui.cao@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Tested-by: Chen Bo <BoX.C.Chen@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 266 insertions, 5 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_flow.c b/drivers/net/ethernet/intel/ice/ice_flow.c
index 39744773a403..fddf5c24930b 100644
--- a/drivers/net/ethernet/intel/ice/ice_flow.c
+++ b/drivers/net/ethernet/intel/ice/ice_flow.c
@@ -96,6 +96,38 @@ struct ice_flow_field_info ice_flds_info[ICE_FLOW_FIELD_IDX_MAX] = {
 	/* ICE_FLOW_FIELD_IDX_GRE_KEYID */
 	ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_GRE, 12,
 			  sizeof_field(struct gre_full_hdr, key)),
+	/* GTP */
+	/* ICE_FLOW_FIELD_IDX_GTPC_TEID */
+	ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_GTPC_TEID, 12, sizeof(__be32)),
+	/* ICE_FLOW_FIELD_IDX_GTPU_IP_TEID */
+	ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_GTPU_IP, 12, sizeof(__be32)),
+	/* ICE_FLOW_FIELD_IDX_GTPU_EH_TEID */
+	ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_GTPU_EH, 12, sizeof(__be32)),
+	/* ICE_FLOW_FIELD_IDX_GTPU_EH_QFI */
+	ICE_FLOW_FLD_INFO_MSK(ICE_FLOW_SEG_HDR_GTPU_EH, 22, sizeof(__be16),
+			      0x3f00),
+	/* ICE_FLOW_FIELD_IDX_GTPU_UP_TEID */
+	ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_GTPU_UP, 12, sizeof(__be32)),
+	/* ICE_FLOW_FIELD_IDX_GTPU_DWN_TEID */
+	ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_GTPU_DWN, 12, sizeof(__be32)),
+	/* PPPoE */
+	/* ICE_FLOW_FIELD_IDX_PPPOE_SESS_ID */
+	ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_PPPOE, 2, sizeof(__be16)),
+	/* PFCP */
+	/* ICE_FLOW_FIELD_IDX_PFCP_SEID */
+	ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_PFCP_SESSION, 12, sizeof(__be64)),
+	/* L2TPv3 */
+	/* ICE_FLOW_FIELD_IDX_L2TPV3_SESS_ID */
+	ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_L2TPV3, 0, sizeof(__be32)),
+	/* ESP */
+	/* ICE_FLOW_FIELD_IDX_ESP_SPI */
+	ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_ESP, 0, sizeof(__be32)),
+	/* AH */
+	/* ICE_FLOW_FIELD_IDX_AH_SPI */
+	ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_AH, 4, sizeof(__be32)),
+	/* NAT_T_ESP */
+	/* ICE_FLOW_FIELD_IDX_NAT_T_ESP_SPI */
+	ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_NAT_T_ESP, 8, sizeof(__be32)),
 };
 
 /* Bitmaps indicating relevant packet types for a particular protocol header
@@ -128,6 +160,8 @@ static const u32 ice_ptypes_macvlan_il[] = {
 /* Packet types for packets with an Outer/First/Single IPv4 header */
 static const u32 ice_ptypes_ipv4_ofos[] = {
 	0x1DC00000, 0x04000800, 0x00000000, 0x00000000,
+	0x00000000, 0x00000155, 0x00000000, 0x00000000,
+	0x00000000, 0x000FC000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
@@ -141,7 +175,7 @@ static const u32 ice_ptypes_ipv4_ofos[] = {
 static const u32 ice_ptypes_ipv4_il[] = {
 	0xE0000000, 0xB807700E, 0x80000003, 0xE01DC03B,
 	0x0000000E, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x001FF800, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
@@ -152,6 +186,8 @@ static const u32 ice_ptypes_ipv4_il[] = {
 /* Packet types for packets with an Outer/First/Single IPv6 header */
 static const u32 ice_ptypes_ipv6_ofos[] = {
 	0x00000000, 0x00000000, 0x77000000, 0x10002000,
+	0x00000000, 0x000002AA, 0x00000000, 0x00000000,
+	0x00000000, 0x03F00000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
@@ -165,7 +201,7 @@ static const u32 ice_ptypes_ipv6_ofos[] = {
 static const u32 ice_ptypes_ipv6_il[] = {
 	0x00000000, 0x03B80770, 0x000001DC, 0x0EE00000,
 	0x00000770, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x7FE00000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
@@ -239,7 +275,7 @@ static const u32 ice_ipv6_il_no_l4[] = {
 static const u32 ice_ptypes_udp_il[] = {
 	0x81000000, 0x20204040, 0x04000010, 0x80810102,
 	0x00000040, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00410000, 0x90842000, 0x00000007,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
@@ -251,7 +287,7 @@ static const u32 ice_ptypes_udp_il[] = {
 static const u32 ice_ptypes_tcp_il[] = {
 	0x04000000, 0x80810102, 0x10000040, 0x02040408,
 	0x00000102, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00820000, 0x21084000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
@@ -263,6 +299,7 @@ static const u32 ice_ptypes_tcp_il[] = {
 static const u32 ice_ptypes_sctp_il[] = {
 	0x08000000, 0x01020204, 0x20000081, 0x04080810,
 	0x00000204, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x01040000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
@@ -318,6 +355,125 @@ static const u32 ice_ptypes_mac_il[] = {
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 };
 
+/* Packet types for GTPC */
+static const u32 ice_ptypes_gtpc[] = {
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000180, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+};
+
+/* Packet types for GTPC with TEID */
+static const u32 ice_ptypes_gtpc_tid[] = {
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000060, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+};
+
+static const u32 ice_ptypes_gtpu[] = {
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x7FFFFE00, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+};
+
+/* Packet types for PPPoE */
+static const u32 ice_ptypes_pppoe[] = {
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x03ffe000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+};
+
+/* Packet types for packets with PFCP NODE header */
+static const u32 ice_ptypes_pfcp_node[] = {
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x80000000, 0x00000002,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+};
+
+/* Packet types for packets with PFCP SESSION header */
+static const u32 ice_ptypes_pfcp_session[] = {
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000005,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+};
+
+/* Packet types for L2TPv3 */
+static const u32 ice_ptypes_l2tpv3[] = {
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000300,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+};
+
+/* Packet types for ESP */
+static const u32 ice_ptypes_esp[] = {
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000003, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+};
+
+/* Packet types for AH */
+static const u32 ice_ptypes_ah[] = {
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x0000000C, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+};
+
+/* Packet types for packets with NAT_T ESP header */
+static const u32 ice_ptypes_nat_t_esp[] = {
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000030, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+	0x00000000, 0x00000000, 0x00000000, 0x00000000,
+};
+
 /* Manage parameters and info. used during the creation of a flow profile */
 struct ice_flow_prof_params {
 	enum ice_block blk;
@@ -334,6 +490,15 @@ struct ice_flow_prof_params {
 	DECLARE_BITMAP(ptypes, ICE_FLOW_PTYPE_MAX);
 };
 
+#define ICE_FLOW_RSS_HDRS_INNER_MASK \
+	(ICE_FLOW_SEG_HDR_PPPOE | ICE_FLOW_SEG_HDR_GTPC | \
+	ICE_FLOW_SEG_HDR_GTPC_TEID | ICE_FLOW_SEG_HDR_GTPU | \
+	ICE_FLOW_SEG_HDR_PFCP_SESSION | ICE_FLOW_SEG_HDR_L2TPV3 | \
+	ICE_FLOW_SEG_HDR_ESP | ICE_FLOW_SEG_HDR_AH | \
+	ICE_FLOW_SEG_HDR_NAT_T_ESP)
+
+#define ICE_FLOW_SEG_HDRS_L2_MASK	\
+	(ICE_FLOW_SEG_HDR_ETH | ICE_FLOW_SEG_HDR_VLAN)
 #define ICE_FLOW_SEG_HDRS_L3_MASK	\
 	(ICE_FLOW_SEG_HDR_IPV4 | ICE_FLOW_SEG_HDR_IPV6 | ICE_FLOW_SEG_HDR_ARP)
 #define ICE_FLOW_SEG_HDRS_L4_MASK	\
@@ -478,6 +643,16 @@ ice_flow_proc_seg_hdrs(struct ice_flow_prof_params *params)
 				   ICE_FLOW_PTYPE_MAX);
 		}
 
+		if (hdrs & ICE_FLOW_SEG_HDR_PPPOE) {
+			src = (const unsigned long *)ice_ptypes_pppoe;
+			bitmap_and(params->ptypes, params->ptypes, src,
+				   ICE_FLOW_PTYPE_MAX);
+		} else {
+			src = (const unsigned long *)ice_ptypes_pppoe;
+			bitmap_andnot(params->ptypes, params->ptypes, src,
+				      ICE_FLOW_PTYPE_MAX);
+		}
+
 		if (hdrs & ICE_FLOW_SEG_HDR_UDP) {
 			src = (const unsigned long *)ice_ptypes_udp_il;
 			bitmap_and(params->ptypes, params->ptypes, src,
@@ -503,6 +678,64 @@ ice_flow_proc_seg_hdrs(struct ice_flow_prof_params *params)
 				bitmap_and(params->ptypes, params->ptypes,
 					   src, ICE_FLOW_PTYPE_MAX);
 			}
+		} else if (hdrs & ICE_FLOW_SEG_HDR_GTPC) {
+			src = (const unsigned long *)ice_ptypes_gtpc;
+			bitmap_and(params->ptypes, params->ptypes, src,
+				   ICE_FLOW_PTYPE_MAX);
+		} else if (hdrs & ICE_FLOW_SEG_HDR_GTPC_TEID) {
+			src = (const unsigned long *)ice_ptypes_gtpc_tid;
+			bitmap_and(params->ptypes, params->ptypes, src,
+				   ICE_FLOW_PTYPE_MAX);
+		} else if (hdrs & ICE_FLOW_SEG_HDR_GTPU_DWN) {
+			src = (const unsigned long *)ice_ptypes_gtpu;
+			bitmap_and(params->ptypes, params->ptypes, src,
+				   ICE_FLOW_PTYPE_MAX);
+		} else if (hdrs & ICE_FLOW_SEG_HDR_GTPU_UP) {
+			src = (const unsigned long *)ice_ptypes_gtpu;
+			bitmap_and(params->ptypes, params->ptypes, src,
+				   ICE_FLOW_PTYPE_MAX);
+		} else if (hdrs & ICE_FLOW_SEG_HDR_GTPU_EH) {
+			src = (const unsigned long *)ice_ptypes_gtpu;
+			bitmap_and(params->ptypes, params->ptypes, src,
+				   ICE_FLOW_PTYPE_MAX);
+		} else if (hdrs & ICE_FLOW_SEG_HDR_GTPU_IP) {
+			src = (const unsigned long *)ice_ptypes_gtpu;
+			bitmap_and(params->ptypes, params->ptypes, src,
+				   ICE_FLOW_PTYPE_MAX);
+		} else if (hdrs & ICE_FLOW_SEG_HDR_L2TPV3) {
+			src = (const unsigned long *)ice_ptypes_l2tpv3;
+			bitmap_and(params->ptypes, params->ptypes, src,
+				   ICE_FLOW_PTYPE_MAX);
+		} else if (hdrs & ICE_FLOW_SEG_HDR_ESP) {
+			src = (const unsigned long *)ice_ptypes_esp;
+			bitmap_and(params->ptypes, params->ptypes, src,
+				   ICE_FLOW_PTYPE_MAX);
+		} else if (hdrs & ICE_FLOW_SEG_HDR_AH) {
+			src = (const unsigned long *)ice_ptypes_ah;
+			bitmap_and(params->ptypes, params->ptypes, src,
+				   ICE_FLOW_PTYPE_MAX);
+		} else if (hdrs & ICE_FLOW_SEG_HDR_NAT_T_ESP) {
+			src = (const unsigned long *)ice_ptypes_nat_t_esp;
+			bitmap_and(params->ptypes, params->ptypes, src,
+				   ICE_FLOW_PTYPE_MAX);
+		}
+
+		if (hdrs & ICE_FLOW_SEG_HDR_PFCP) {
+			if (hdrs & ICE_FLOW_SEG_HDR_PFCP_NODE)
+				src = (const unsigned long *)ice_ptypes_pfcp_node;
+			else
+				src = (const unsigned long *)ice_ptypes_pfcp_session;
+
+			bitmap_and(params->ptypes, params->ptypes, src,
+				   ICE_FLOW_PTYPE_MAX);
+		} else {
+			src = (const unsigned long *)ice_ptypes_pfcp_node;
+			bitmap_andnot(params->ptypes, params->ptypes, src,
+				      ICE_FLOW_PTYPE_MAX);
+
+			src = (const unsigned long *)ice_ptypes_pfcp_session;
+			bitmap_andnot(params->ptypes, params->ptypes, src,
+				      ICE_FLOW_PTYPE_MAX);
 		}
 	}
 
@@ -611,6 +844,33 @@ ice_flow_xtract_fld(struct ice_hw *hw, struct ice_flow_prof_params *params,
 	case ICE_FLOW_FIELD_IDX_SCTP_DST_PORT:
 		prot_id = ICE_PROT_SCTP_IL;
 		break;
+	case ICE_FLOW_FIELD_IDX_GTPC_TEID:
+	case ICE_FLOW_FIELD_IDX_GTPU_IP_TEID:
+	case ICE_FLOW_FIELD_IDX_GTPU_UP_TEID:
+	case ICE_FLOW_FIELD_IDX_GTPU_DWN_TEID:
+	case ICE_FLOW_FIELD_IDX_GTPU_EH_TEID:
+	case ICE_FLOW_FIELD_IDX_GTPU_EH_QFI:
+		/* GTP is accessed through UDP OF protocol */
+		prot_id = ICE_PROT_UDP_OF;
+		break;
+	case ICE_FLOW_FIELD_IDX_PPPOE_SESS_ID:
+		prot_id = ICE_PROT_PPPOE;
+		break;
+	case ICE_FLOW_FIELD_IDX_PFCP_SEID:
+		prot_id = ICE_PROT_UDP_IL_OR_S;
+		break;
+	case ICE_FLOW_FIELD_IDX_L2TPV3_SESS_ID:
+		prot_id = ICE_PROT_L2TPV3;
+		break;
+	case ICE_FLOW_FIELD_IDX_ESP_SPI:
+		prot_id = ICE_PROT_ESP_F;
+		break;
+	case ICE_FLOW_FIELD_IDX_AH_SPI:
+		prot_id = ICE_PROT_ESP_2;
+		break;
+	case ICE_FLOW_FIELD_IDX_NAT_T_ESP_SPI:
+		prot_id = ICE_PROT_UDP_IL_OR_S;
+		break;
 	case ICE_FLOW_FIELD_IDX_ARP_SIP:
 	case ICE_FLOW_FIELD_IDX_ARP_DIP:
 	case ICE_FLOW_FIELD_IDX_ARP_SHA:
@@ -1446,7 +1706,8 @@ ice_flow_set_rss_seg_info(struct ice_flow_seg_info *segs, u64 hash_fields,
 
 	ICE_FLOW_SET_HDRS(segs, flow_hdr);
 
-	if (segs->hdrs & ~ICE_FLOW_RSS_SEG_HDR_VAL_MASKS)
+	if (segs->hdrs & ~ICE_FLOW_RSS_SEG_HDR_VAL_MASKS &
+	    ~ICE_FLOW_RSS_HDRS_INNER_MASK)
 		return ICE_ERR_PARAM;
 
 	val = (u64)(segs->hdrs & ICE_FLOW_RSS_SEG_HDR_L3_MASKS);