Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue

Tony Nguyen says:

====================
ethtool: ice: Support for RSS settings to GTP

Takeru Hayasaka enables RSS functionality for GTP packets on ice driver
with ethtool.

A user can include TEID and make RSS work for GTP-U over IPv4 by doing the
following:`ethtool -N ens3 rx-flow-hash gtpu4 sde`

In addition to gtpu(4|6), we now support gtpc(4|6),gtpc(4|6)t,gtpu(4|6)e,
gtpu(4|6)u, and gtpu(4|6)d.

gtpc(4|6): Used for GTP-C in IPv4 and IPv6, where the GTP header format does
not include a TEID.
gtpc(4|6)t: Used for GTP-C in IPv4 and IPv6, with a GTP header format that
includes a TEID.
gtpu(4|6): Used for GTP-U in both IPv4 and IPv6 scenarios.
gtpu(4|6)e: Used for GTP-U with extended headers in both IPv4 and IPv6.
gtpu(4|6)u: Used when the PSC (PDU session container) in the GTP-U extended
header includes Uplink, applicable to both IPv4 and IPv6.
gtpu(4|6)d: Used when the PSC in the GTP-U extended header includes Downlink,
for both IPv4 and IPv6.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 210 insertions, 9 deletions

diff --git a/Documentation/networking/device_drivers/ethernet/intel/ice.rst b/Documentation/networking/device_drivers/ethernet/intel/ice.rst
index 5038e54586af..934752f675ba 100644
--- a/Documentation/networking/device_drivers/ethernet/intel/ice.rst
+++ b/Documentation/networking/device_drivers/ethernet/intel/ice.rst
@@ -368,15 +368,28 @@ more options for Receive Side Scaling (RSS) hash byte configuration.
   # ethtool -N <ethX> rx-flow-hash <type> <option>
 
   Where <type> is:
-    tcp4  signifying TCP over IPv4
-    udp4  signifying UDP over IPv4
-    tcp6  signifying TCP over IPv6
-    udp6  signifying UDP over IPv6
+    tcp4    signifying TCP over IPv4
+    udp4    signifying UDP over IPv4
+    gtpc4   signifying GTP-C over IPv4
+    gtpc4t  signifying GTP-C (include TEID) over IPv4
+    gtpu4   signifying GTP-U over IPV4
+    gtpu4e  signifying GTP-U and Extension Header over IPV4
+    gtpu4u  signifying GTP-U PSC Uplink over IPV4
+    gtpu4d  signifying GTP-U PSC Downlink over IPV4
+    tcp6    signifying TCP over IPv6
+    udp6    signifying UDP over IPv6
+    gtpc6   signifying GTP-C over IPv6
+    gtpc6t  signifying GTP-C (include TEID) over IPv6
+    gtpu6   signifying GTP-U over IPV6
+    gtpu6e  signifying GTP-U and Extension Header over IPV6
+    gtpu6u  signifying GTP-U PSC Uplink over IPV6
+    gtpu6d  signifying GTP-U PSC Downlink over IPV6
   And <option> is one or more of:
     s     Hash on the IP source address of the Rx packet.
     d     Hash on the IP destination address of the Rx packet.
     f     Hash on bytes 0 and 1 of the Layer 4 header of the Rx packet.
     n     Hash on bytes 2 and 3 of the Layer 4 header of the Rx packet.
+    e     Hash on GTP Packet on TEID (4bytes) of the Rx packet.
 
 
 Accelerated Receive Flow Steering (aRFS)
diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
index bb912155676e..255a9c8151b4 100644
--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -2483,6 +2483,24 @@ static u32 ice_parse_hdrs(struct ethtool_rxnfc *nfc)
 	case SCTP_V4_FLOW:
 		hdrs |= ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV4;
 		break;
+	case GTPU_V4_FLOW:
+		hdrs |= ICE_FLOW_SEG_HDR_GTPU_IP | ICE_FLOW_SEG_HDR_IPV4;
+		break;
+	case GTPC_V4_FLOW:
+		hdrs |= ICE_FLOW_SEG_HDR_GTPC | ICE_FLOW_SEG_HDR_IPV4;
+		break;
+	case GTPC_TEID_V4_FLOW:
+		hdrs |= ICE_FLOW_SEG_HDR_GTPC_TEID | ICE_FLOW_SEG_HDR_IPV4;
+		break;
+	case GTPU_EH_V4_FLOW:
+		hdrs |= ICE_FLOW_SEG_HDR_GTPU_EH | ICE_FLOW_SEG_HDR_IPV4;
+		break;
+	case GTPU_UL_V4_FLOW:
+		hdrs |= ICE_FLOW_SEG_HDR_GTPU_UP | ICE_FLOW_SEG_HDR_IPV4;
+		break;
+	case GTPU_DL_V4_FLOW:
+		hdrs |= ICE_FLOW_SEG_HDR_GTPU_DWN | ICE_FLOW_SEG_HDR_IPV4;
+		break;
 	case TCP_V6_FLOW:
 		hdrs |= ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_IPV6;
 		break;
@@ -2492,6 +2510,24 @@ static u32 ice_parse_hdrs(struct ethtool_rxnfc *nfc)
 	case SCTP_V6_FLOW:
 		hdrs |= ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV6;
 		break;
+	case GTPU_V6_FLOW:
+		hdrs |= ICE_FLOW_SEG_HDR_GTPU_IP | ICE_FLOW_SEG_HDR_IPV6;
+		break;
+	case GTPC_V6_FLOW:
+		hdrs |= ICE_FLOW_SEG_HDR_GTPC | ICE_FLOW_SEG_HDR_IPV6;
+		break;
+	case GTPC_TEID_V6_FLOW:
+		hdrs |= ICE_FLOW_SEG_HDR_GTPC_TEID | ICE_FLOW_SEG_HDR_IPV6;
+		break;
+	case GTPU_EH_V6_FLOW:
+		hdrs |= ICE_FLOW_SEG_HDR_GTPU_EH | ICE_FLOW_SEG_HDR_IPV6;
+		break;
+	case GTPU_UL_V6_FLOW:
+		hdrs |= ICE_FLOW_SEG_HDR_GTPU_UP | ICE_FLOW_SEG_HDR_IPV6;
+		break;
+	case GTPU_DL_V6_FLOW:
+		hdrs |= ICE_FLOW_SEG_HDR_GTPU_DWN | ICE_FLOW_SEG_HDR_IPV6;
+		break;
 	default:
 		break;
 	}
@@ -2515,6 +2551,12 @@ static u64 ice_parse_hash_flds(struct ethtool_rxnfc *nfc, bool symm)
 		case TCP_V4_FLOW:
 		case UDP_V4_FLOW:
 		case SCTP_V4_FLOW:
+		case GTPU_V4_FLOW:
+		case GTPC_V4_FLOW:
+		case GTPC_TEID_V4_FLOW:
+		case GTPU_EH_V4_FLOW:
+		case GTPU_UL_V4_FLOW:
+		case GTPU_DL_V4_FLOW:
 			if (nfc->data & RXH_IP_SRC)
 				hfld |= ICE_FLOW_HASH_FLD_IPV4_SA;
 			if (nfc->data & RXH_IP_DST)
@@ -2523,6 +2565,12 @@ static u64 ice_parse_hash_flds(struct ethtool_rxnfc *nfc, bool symm)
 		case TCP_V6_FLOW:
 		case UDP_V6_FLOW:
 		case SCTP_V6_FLOW:
+		case GTPU_V6_FLOW:
+		case GTPC_V6_FLOW:
+		case GTPC_TEID_V6_FLOW:
+		case GTPU_EH_V6_FLOW:
+		case GTPU_UL_V6_FLOW:
+		case GTPU_DL_V6_FLOW:
 			if (nfc->data & RXH_IP_SRC)
 				hfld |= ICE_FLOW_HASH_FLD_IPV6_SA;
 			if (nfc->data & RXH_IP_DST)
@@ -2561,6 +2609,33 @@ static u64 ice_parse_hash_flds(struct ethtool_rxnfc *nfc, bool symm)
 		}
 	}
 
+	if (nfc->data & RXH_GTP_TEID) {
+		switch (nfc->flow_type) {
+		case GTPC_TEID_V4_FLOW:
+		case GTPC_TEID_V6_FLOW:
+			hfld |= ICE_FLOW_HASH_FLD_GTPC_TEID;
+			break;
+		case GTPU_V4_FLOW:
+		case GTPU_V6_FLOW:
+			hfld |= ICE_FLOW_HASH_FLD_GTPU_IP_TEID;
+			break;
+		case GTPU_EH_V4_FLOW:
+		case GTPU_EH_V6_FLOW:
+			hfld |= ICE_FLOW_HASH_FLD_GTPU_EH_TEID;
+			break;
+		case GTPU_UL_V4_FLOW:
+		case GTPU_UL_V6_FLOW:
+			hfld |= ICE_FLOW_HASH_FLD_GTPU_UP_TEID;
+			break;
+		case GTPU_DL_V4_FLOW:
+		case GTPU_DL_V6_FLOW:
+			hfld |= ICE_FLOW_HASH_FLD_GTPU_DWN_TEID;
+			break;
+		default:
+			break;
+		}
+	}
+
 	return hfld;
 }
 
@@ -2673,6 +2748,13 @@ ice_get_rss_hash_opt(struct ice_vsi *vsi, struct ethtool_rxnfc *nfc)
 	    hash_flds & ICE_FLOW_HASH_FLD_UDP_DST_PORT ||
 	    hash_flds & ICE_FLOW_HASH_FLD_SCTP_DST_PORT)
 		nfc->data |= (u64)RXH_L4_B_2_3;
+
+	if (hash_flds & ICE_FLOW_HASH_FLD_GTPC_TEID ||
+	    hash_flds & ICE_FLOW_HASH_FLD_GTPU_IP_TEID ||
+	    hash_flds & ICE_FLOW_HASH_FLD_GTPU_EH_TEID ||
+	    hash_flds & ICE_FLOW_HASH_FLD_GTPU_UP_TEID ||
+	    hash_flds & ICE_FLOW_HASH_FLD_GTPU_DWN_TEID)
+		nfc->data |= (u64)RXH_GTP_TEID;
 }
 
 /**
diff --git a/drivers/net/ethernet/intel/ice/ice_flow.h b/drivers/net/ethernet/intel/ice/ice_flow.h
index ff82915ab497..2fd2e0cb483d 100644
--- a/drivers/net/ethernet/intel/ice/ice_flow.h
+++ b/drivers/net/ethernet/intel/ice/ice_flow.h
@@ -37,13 +37,13 @@
 #define ICE_HASH_SCTP_IPV4	(ICE_FLOW_HASH_IPV4 | ICE_FLOW_HASH_SCTP_PORT)
 #define ICE_HASH_SCTP_IPV6	(ICE_FLOW_HASH_IPV6 | ICE_FLOW_HASH_SCTP_PORT)
 
-#define ICE_FLOW_HASH_GTP_TEID \
+#define ICE_FLOW_HASH_GTP_C_TEID \
 	(BIT_ULL(ICE_FLOW_FIELD_IDX_GTPC_TEID))
 
-#define ICE_FLOW_HASH_GTP_IPV4_TEID \
-	(ICE_FLOW_HASH_IPV4 | ICE_FLOW_HASH_GTP_TEID)
-#define ICE_FLOW_HASH_GTP_IPV6_TEID \
-	(ICE_FLOW_HASH_IPV6 | ICE_FLOW_HASH_GTP_TEID)
+#define ICE_FLOW_HASH_GTP_C_IPV4_TEID \
+	(ICE_FLOW_HASH_IPV4 | ICE_FLOW_HASH_GTP_C_TEID)
+#define ICE_FLOW_HASH_GTP_C_IPV6_TEID \
+	(ICE_FLOW_HASH_IPV6 | ICE_FLOW_HASH_GTP_C_TEID)
 
 #define ICE_FLOW_HASH_GTP_U_TEID \
 	(BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_IP_TEID))
@@ -66,6 +66,20 @@
 	(ICE_FLOW_HASH_IPV6 | ICE_FLOW_HASH_GTP_U_EH_TEID | \
 	 ICE_FLOW_HASH_GTP_U_EH_QFI)
 
+#define ICE_FLOW_HASH_GTP_U_UP \
+	(BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_UP_TEID))
+#define ICE_FLOW_HASH_GTP_U_DWN \
+	(BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_DWN_TEID))
+
+#define ICE_FLOW_HASH_GTP_U_IPV4_UP \
+	(ICE_FLOW_HASH_IPV4 | ICE_FLOW_HASH_GTP_U_UP)
+#define ICE_FLOW_HASH_GTP_U_IPV6_UP \
+	(ICE_FLOW_HASH_IPV6 | ICE_FLOW_HASH_GTP_U_UP)
+#define ICE_FLOW_HASH_GTP_U_IPV4_DWN \
+	(ICE_FLOW_HASH_IPV4 | ICE_FLOW_HASH_GTP_U_DWN)
+#define ICE_FLOW_HASH_GTP_U_IPV6_DWN \
+	(ICE_FLOW_HASH_IPV6 | ICE_FLOW_HASH_GTP_U_DWN)
+
 #define ICE_FLOW_HASH_PPPOE_SESS_ID \
 	(BIT_ULL(ICE_FLOW_FIELD_IDX_PPPOE_SESS_ID))
 
@@ -242,6 +256,13 @@ enum ice_flow_field {
 #define ICE_FLOW_HASH_FLD_SCTP_DST_PORT	\
 	BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_DST_PORT)
 
+#define ICE_FLOW_HASH_FLD_GTPC_TEID	BIT_ULL(ICE_FLOW_FIELD_IDX_GTPC_TEID)
+#define ICE_FLOW_HASH_FLD_GTPU_IP_TEID BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_IP_TEID)
+#define ICE_FLOW_HASH_FLD_GTPU_EH_TEID BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_EH_TEID)
+#define ICE_FLOW_HASH_FLD_GTPU_UP_TEID BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_UP_TEID)
+#define ICE_FLOW_HASH_FLD_GTPU_DWN_TEID \
+	BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_DWN_TEID)
+
 /* Flow headers and fields for AVF support */
 enum ice_flow_avf_hdr_field {
 	/* Values 0 - 28 are reserved for future use */
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index 71f061667980..ee3f0d3e3f6d 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -1618,6 +1618,25 @@ static const struct ice_rss_hash_cfg default_rss_cfgs[] = {
 	 */
 	{ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV4,
 		ICE_HASH_SCTP_IPV4, ICE_RSS_OUTER_HEADERS, false},
+	/* configure RSS for gtpc4 with input set IPv4 src/dst */
+	{ICE_FLOW_SEG_HDR_GTPC | ICE_FLOW_SEG_HDR_IPV4,
+		ICE_FLOW_HASH_IPV4, ICE_RSS_OUTER_HEADERS, false},
+	/* configure RSS for gtpc4t with input set IPv4 src/dst */
+	{ICE_FLOW_SEG_HDR_GTPC_TEID | ICE_FLOW_SEG_HDR_IPV4,
+		ICE_FLOW_HASH_GTP_C_IPV4_TEID, ICE_RSS_OUTER_HEADERS, false},
+	/* configure RSS for gtpu4 with input set IPv4 src/dst */
+	{ICE_FLOW_SEG_HDR_GTPU_IP | ICE_FLOW_SEG_HDR_IPV4,
+		ICE_FLOW_HASH_GTP_U_IPV4_TEID, ICE_RSS_OUTER_HEADERS, false},
+	/* configure RSS for gtpu4e with input set IPv4 src/dst */
+	{ICE_FLOW_SEG_HDR_GTPU_EH | ICE_FLOW_SEG_HDR_IPV4,
+		ICE_FLOW_HASH_GTP_U_IPV4_EH, ICE_RSS_OUTER_HEADERS, false},
+	/* configure RSS for gtpu4u with input set IPv4 src/dst */
+	{ ICE_FLOW_SEG_HDR_GTPU_UP | ICE_FLOW_SEG_HDR_IPV4,
+		ICE_FLOW_HASH_GTP_U_IPV4_UP, ICE_RSS_OUTER_HEADERS, false},
+	/* configure RSS for gtpu4d with input set IPv4 src/dst */
+	{ICE_FLOW_SEG_HDR_GTPU_DWN | ICE_FLOW_SEG_HDR_IPV4,
+		ICE_FLOW_HASH_GTP_U_IPV4_DWN, ICE_RSS_OUTER_HEADERS, false},
+
 	/* configure RSS for tcp6 with input set IPv6 src/dst, TCP src/dst */
 	{ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_IPV6,
 				ICE_HASH_TCP_IPV6,  ICE_RSS_ANY_HEADERS, false},
@@ -1632,6 +1651,24 @@ static const struct ice_rss_hash_cfg default_rss_cfgs[] = {
 	/* configure RSS for IPSEC ESP SPI with input set MAC_IPV4_SPI */
 	{ICE_FLOW_SEG_HDR_ESP,
 		ICE_FLOW_HASH_ESP_SPI, ICE_RSS_OUTER_HEADERS, false},
+	/* configure RSS for gtpc6 with input set IPv6 src/dst */
+	{ICE_FLOW_SEG_HDR_GTPC | ICE_FLOW_SEG_HDR_IPV6,
+		ICE_FLOW_HASH_IPV6, ICE_RSS_OUTER_HEADERS, false},
+	/* configure RSS for gtpc6t with input set IPv6 src/dst */
+	{ICE_FLOW_SEG_HDR_GTPC_TEID | ICE_FLOW_SEG_HDR_IPV6,
+		ICE_FLOW_HASH_GTP_C_IPV6_TEID, ICE_RSS_OUTER_HEADERS, false},
+	/* configure RSS for gtpu6 with input set IPv6 src/dst */
+	{ICE_FLOW_SEG_HDR_GTPU_IP | ICE_FLOW_SEG_HDR_IPV6,
+		ICE_FLOW_HASH_GTP_U_IPV6_TEID, ICE_RSS_OUTER_HEADERS, false},
+	/* configure RSS for gtpu6e with input set IPv6 src/dst */
+	{ICE_FLOW_SEG_HDR_GTPU_EH | ICE_FLOW_SEG_HDR_IPV6,
+		ICE_FLOW_HASH_GTP_U_IPV6_EH, ICE_RSS_OUTER_HEADERS, false},
+	/* configure RSS for gtpu6u with input set IPv6 src/dst */
+	{ ICE_FLOW_SEG_HDR_GTPU_UP | ICE_FLOW_SEG_HDR_IPV6,
+		ICE_FLOW_HASH_GTP_U_IPV6_UP, ICE_RSS_OUTER_HEADERS, false},
+	/* configure RSS for gtpu6d with input set IPv6 src/dst */
+	{ICE_FLOW_SEG_HDR_GTPU_DWN | ICE_FLOW_SEG_HDR_IPV6,
+		ICE_FLOW_HASH_GTP_U_IPV6_DWN, ICE_RSS_OUTER_HEADERS, false},
 };
 
 /**
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index 06ef6b78b7de..11fc18988bc2 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -2023,6 +2023,53 @@ static inline int ethtool_validate_duplex(__u8 duplex)
 #define	IPV4_FLOW	0x10	/* hash only */
 #define	IPV6_FLOW	0x11	/* hash only */
 #define	ETHER_FLOW	0x12	/* spec only (ether_spec) */
+
+/* Used for GTP-U IPv4 and IPv6.
+ * The format of GTP packets only includes
+ * elements such as TEID and GTP version.
+ * It is primarily intended for data communication of the UE.
+ */
+#define GTPU_V4_FLOW 0x13	/* hash only */
+#define GTPU_V6_FLOW 0x14	/* hash only */
+
+/* Use for GTP-C IPv4 and v6.
+ * The format of these GTP packets does not include TEID.
+ * Primarily expected to be used for communication
+ * to create sessions for UE data communication,
+ * commonly referred to as CSR (Create Session Request).
+ */
+#define GTPC_V4_FLOW 0x15	/* hash only */
+#define GTPC_V6_FLOW 0x16	/* hash only */
+
+/* Use for GTP-C IPv4 and v6.
+ * Unlike GTPC_V4_FLOW, the format of these GTP packets includes TEID.
+ * After session creation, it becomes this packet.
+ * This is mainly used for requests to realize UE handover.
+ */
+#define GTPC_TEID_V4_FLOW 0x17	/* hash only */
+#define GTPC_TEID_V6_FLOW 0x18	/* hash only */
+
+/* Use for GTP-U and extended headers for the PSC (PDU Session Container).
+ * The format of these GTP packets includes TEID and QFI.
+ * In 5G communication using UPF (User Plane Function),
+ * data communication with this extended header is performed.
+ */
+#define GTPU_EH_V4_FLOW 0x19	/* hash only */
+#define GTPU_EH_V6_FLOW 0x1a	/* hash only */
+
+/* Use for GTP-U IPv4 and v6 PSC (PDU Session Container) extended headers.
+ * This differs from GTPU_EH_V(4|6)_FLOW in that it is distinguished by
+ * UL/DL included in the PSC.
+ * There are differences in the data included based on Downlink/Uplink,
+ * and can be used to distinguish packets.
+ * The functions described so far are useful when you want to
+ * handle communication from the mobile network in UPF, PGW, etc.
+ */
+#define GTPU_UL_V4_FLOW 0x1b	/* hash only */
+#define GTPU_UL_V6_FLOW 0x1c	/* hash only */
+#define GTPU_DL_V4_FLOW 0x1d	/* hash only */
+#define GTPU_DL_V6_FLOW 0x1e	/* hash only */
+
 /* Flag to enable additional fields in struct ethtool_rx_flow_spec */
 #define	FLOW_EXT	0x80000000
 #define	FLOW_MAC_EXT	0x40000000
@@ -2037,6 +2084,7 @@ static inline int ethtool_validate_duplex(__u8 duplex)
 #define	RXH_IP_DST	(1 << 5)
 #define	RXH_L4_B_0_1	(1 << 6) /* src port in case of TCP/UDP/SCTP */
 #define	RXH_L4_B_2_3	(1 << 7) /* dst port in case of TCP/UDP/SCTP */
+#define	RXH_GTP_TEID	(1 << 8) /* teid in case of GTP */
 #define	RXH_DISCARD	(1 << 31)
 
 #define	RX_CLS_FLOW_DISC	0xffffffffffffffffULL