1 files changed, 96 insertions, 23 deletions

diff --git a/drivers/net/ethernet/intel/iavf/iavf_adv_rss.c b/drivers/net/ethernet/intel/iavf/iavf_adv_rss.c
index a9e1da35e248..4d12dfe1b481 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_adv_rss.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_adv_rss.c
@@ -91,6 +91,55 @@ iavf_fill_adv_rss_sctp_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds)
 }
 
 /**
+ * iavf_fill_adv_rss_gtp_hdr - Fill GTP-related RSS protocol headers
+ * @proto_hdrs: pointer to the virtchnl protocol headers structure to populate
+ * @packet_hdrs: bitmask of packet header types to configure
+ * @hash_flds: RSS hash field configuration
+ *
+ * This function populates the virtchnl protocol header structure with
+ * appropriate GTP-related header types based on the specified packet_hdrs.
+ * It supports GTPC, GTPU with extension headers, and uplink/downlink PDU
+ * types. For certain GTPU types, it also appends an IPv4 header to enable
+ * hashing on the destination IP address.
+ *
+ * Return: 0 on success or -EOPNOTSUPP if the packet_hdrs value is unsupported.
+ */
+static int
+iavf_fill_adv_rss_gtp_hdr(struct virtchnl_proto_hdrs *proto_hdrs,
+			  u32 packet_hdrs, u64 hash_flds)
+{
+	struct virtchnl_proto_hdr *hdr;
+
+	hdr = &proto_hdrs->proto_hdr[proto_hdrs->count - 1];
+
+	switch (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_GTP) {
+	case IAVF_ADV_RSS_FLOW_SEG_HDR_GTPC_TEID:
+	case IAVF_ADV_RSS_FLOW_SEG_HDR_GTPC:
+		VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, GTPC);
+		break;
+	case IAVF_ADV_RSS_FLOW_SEG_HDR_GTPU_EH:
+		VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, GTPU_EH);
+		break;
+	case IAVF_ADV_RSS_FLOW_SEG_HDR_GTPU_UP:
+		VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, GTPU_EH_PDU_UP);
+		hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
+		iavf_fill_adv_rss_ip4_hdr(hdr, IAVF_ADV_RSS_HASH_FLD_IPV4_DA);
+		break;
+	case IAVF_ADV_RSS_FLOW_SEG_HDR_GTPU_DWN:
+		VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, GTPU_EH_PDU_DWN);
+		fallthrough;
+	case IAVF_ADV_RSS_FLOW_SEG_HDR_GTPU_IP:
+		hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
+		iavf_fill_adv_rss_ip4_hdr(hdr, IAVF_ADV_RSS_HASH_FLD_IPV4_DA);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+/**
  * iavf_fill_adv_rss_cfg_msg - fill the RSS configuration into virtchnl message
  * @rss_cfg: the virtchnl message to be filled with RSS configuration setting
  * @packet_hdrs: the RSS configuration protocol header types
@@ -103,6 +152,8 @@ int
 iavf_fill_adv_rss_cfg_msg(struct virtchnl_rss_cfg *rss_cfg,
 			  u32 packet_hdrs, u64 hash_flds, bool symm)
 {
+	const u32 packet_l3_hdrs = packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_L3;
+	const u32 packet_l4_hdrs = packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_L4;
 	struct virtchnl_proto_hdrs *proto_hdrs = &rss_cfg->proto_hdrs;
 	struct virtchnl_proto_hdr *hdr;
 
@@ -113,31 +164,41 @@ iavf_fill_adv_rss_cfg_msg(struct virtchnl_rss_cfg *rss_cfg,
 
 	proto_hdrs->tunnel_level = 0;	/* always outer layer */
 
-	hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
-	switch (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_L3) {
-	case IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4:
-		iavf_fill_adv_rss_ip4_hdr(hdr, hash_flds);
-		break;
-	case IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6:
-		iavf_fill_adv_rss_ip6_hdr(hdr, hash_flds);
-		break;
-	default:
-		return -EINVAL;
+	if (packet_l3_hdrs) {
+		hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
+		switch (packet_l3_hdrs) {
+		case IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4:
+			iavf_fill_adv_rss_ip4_hdr(hdr, hash_flds);
+			break;
+		case IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6:
+			iavf_fill_adv_rss_ip6_hdr(hdr, hash_flds);
+			break;
+		default:
+			return -EINVAL;
+		}
 	}
 
-	hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
-	switch (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_L4) {
-	case IAVF_ADV_RSS_FLOW_SEG_HDR_TCP:
-		iavf_fill_adv_rss_tcp_hdr(hdr, hash_flds);
-		break;
-	case IAVF_ADV_RSS_FLOW_SEG_HDR_UDP:
-		iavf_fill_adv_rss_udp_hdr(hdr, hash_flds);
-		break;
-	case IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP:
-		iavf_fill_adv_rss_sctp_hdr(hdr, hash_flds);
-		break;
-	default:
-		return -EINVAL;
+	if (packet_l4_hdrs) {
+		hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
+		switch (packet_l4_hdrs) {
+		case IAVF_ADV_RSS_FLOW_SEG_HDR_TCP:
+			iavf_fill_adv_rss_tcp_hdr(hdr, hash_flds);
+			break;
+		case IAVF_ADV_RSS_FLOW_SEG_HDR_UDP:
+			iavf_fill_adv_rss_udp_hdr(hdr, hash_flds);
+			break;
+		case IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP:
+			iavf_fill_adv_rss_sctp_hdr(hdr, hash_flds);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_GTP) {
+		hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
+		if (iavf_fill_adv_rss_gtp_hdr(proto_hdrs, packet_hdrs, hash_flds))
+			return -EINVAL;
 	}
 
 	return 0;
@@ -186,6 +247,8 @@ iavf_print_adv_rss_cfg(struct iavf_adapter *adapter, struct iavf_adv_rss *rss,
 		proto = "UDP";
 	else if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP)
 		proto = "SCTP";
+	else if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_GTP)
+		proto = "GTP";
 	else
 		return;
 
@@ -211,6 +274,16 @@ iavf_print_adv_rss_cfg(struct iavf_adapter *adapter, struct iavf_adv_rss *rss,
 			 IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT |
 			 IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT))
 		strcat(hash_opt, "dst port,");
+	if (hash_flds & IAVF_ADV_RSS_HASH_FLD_GTPC_TEID)
+		strcat(hash_opt, "gtp-c,");
+	if (hash_flds & IAVF_ADV_RSS_HASH_FLD_GTPU_IP_TEID)
+		strcat(hash_opt, "gtp-u ip,");
+	if (hash_flds & IAVF_ADV_RSS_HASH_FLD_GTPU_EH_TEID)
+		strcat(hash_opt, "gtp-u ext,");
+	if (hash_flds & IAVF_ADV_RSS_HASH_FLD_GTPU_UP_TEID)
+		strcat(hash_opt, "gtp-u ul,");
+	if (hash_flds & IAVF_ADV_RSS_HASH_FLD_GTPU_DWN_TEID)
+		strcat(hash_opt, "gtp-u dl,");
 
 	if (!action)
 		action = "";