[dpdk-dev] [PATCH v4 08/13] net/ice: add support for PFCP

[Wei Zhao <wei.zhao1@intel.com>]

This patch add switch filter support for PFCP packets,
it enable swicth filter to direct ipv4/ipv6 packets with
PFCP session or node payload to specific action.

Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
---
 drivers/net/ice/ice_generic_flow.c  | 15 +++++++
 drivers/net/ice/ice_generic_flow.h  |  4 ++
 drivers/net/ice/ice_switch_filter.c | 62 +++++++++++++++++++++++++++++
 3 files changed, 81 insertions(+)

diff --git a/drivers/net/ice/ice_generic_flow.c b/drivers/net/ice/ice_generic_flow.c
index 189ef6c4a..04dcaba08 100644
--- a/drivers/net/ice/ice_generic_flow.c
+++ b/drivers/net/ice/ice_generic_flow.c
@@ -1400,6 +1400,21 @@ enum rte_flow_item_type pattern_eth_ipv6_l2tp[] = {
 	RTE_FLOW_ITEM_TYPE_L2TPV3OIP,
 	RTE_FLOW_ITEM_TYPE_END,
 };
+enum rte_flow_item_type pattern_eth_ipv4_pfcp[] = {
+	RTE_FLOW_ITEM_TYPE_ETH,
+	RTE_FLOW_ITEM_TYPE_IPV4,
+	RTE_FLOW_ITEM_TYPE_UDP,
+	RTE_FLOW_ITEM_TYPE_PFCP,
+	RTE_FLOW_ITEM_TYPE_END,
+};
+enum rte_flow_item_type pattern_eth_ipv6_pfcp[] = {
+	RTE_FLOW_ITEM_TYPE_ETH,
+	RTE_FLOW_ITEM_TYPE_IPV6,
+	RTE_FLOW_ITEM_TYPE_UDP,
+	RTE_FLOW_ITEM_TYPE_PFCP,
+	RTE_FLOW_ITEM_TYPE_END,
+};
+
 
 
 typedef struct ice_flow_engine * (*parse_engine_t)(struct ice_adapter *ad,
diff --git a/drivers/net/ice/ice_generic_flow.h b/drivers/net/ice/ice_generic_flow.h
index 006fd00b3..8a866d2ee 100644
--- a/drivers/net/ice/ice_generic_flow.h
+++ b/drivers/net/ice/ice_generic_flow.h
@@ -400,6 +400,10 @@ extern enum rte_flow_item_type pattern_eth_ipv6_ah[];
 /* L2TP */
 extern enum rte_flow_item_type pattern_eth_ipv6_l2tp[];
 
+/* PFCP */
+extern enum rte_flow_item_type pattern_eth_ipv4_pfcp[];
+extern enum rte_flow_item_type pattern_eth_ipv6_pfcp[];
+
 struct ice_adapter;
 
 extern const struct rte_flow_ops ice_flow_ops;
diff --git a/drivers/net/ice/ice_switch_filter.c b/drivers/net/ice/ice_switch_filter.c
index 9c87a16dd..9b4b9346c 100644
--- a/drivers/net/ice/ice_switch_filter.c
+++ b/drivers/net/ice/ice_switch_filter.c
@@ -154,6 +154,10 @@ ice_pattern_match_item ice_switch_pattern_dist_comms[] = {
 			ICE_INSET_NONE, ICE_INSET_NONE},
 	{pattern_eth_ipv6_l2tp,
 			ICE_INSET_NONE, ICE_INSET_NONE},
+	{pattern_eth_ipv4_pfcp,
+			ICE_INSET_NONE, ICE_INSET_NONE},
+	{pattern_eth_ipv6_pfcp,
+			ICE_INSET_NONE, ICE_INSET_NONE},
 };
 
 static struct
@@ -224,6 +228,10 @@ ice_pattern_match_item ice_switch_pattern_perm[] = {
 			ICE_INSET_NONE, ICE_INSET_NONE},
 	{pattern_eth_ipv6_l2tp,
 			ICE_INSET_NONE, ICE_INSET_NONE},
+	{pattern_eth_ipv4_pfcp,
+			ICE_INSET_NONE, ICE_INSET_NONE},
+	{pattern_eth_ipv6_pfcp,
+			ICE_INSET_NONE, ICE_INSET_NONE},
 };
 
 static int
@@ -350,6 +358,7 @@ ice_switch_inset_get(const struct rte_flow_item pattern[],
 	const struct rte_flow_item_esp *esp_spec, *esp_mask;
 	const struct rte_flow_item_ah *ah_spec, *ah_mask;
 	const struct rte_flow_item_l2tpv3oip *l2tp_spec, *l2tp_mask;
+	const struct rte_flow_item_pfcp *pfcp_spec, *pfcp_mask;
 	uint64_t input_set = ICE_INSET_NONE;
 	uint16_t j, t = 0;
 	uint16_t tunnel_valid = 0;
@@ -996,6 +1005,55 @@ ice_switch_inset_get(const struct rte_flow_item pattern[],
 			if (ipv6_valiad)
 				*tun_type = ICE_SW_TUN_PROFID_MAC_IPV6_L2TPV3;
 			break;
+		case RTE_FLOW_ITEM_TYPE_PFCP:
+			pfcp_spec = item->spec;
+			pfcp_mask = item->mask;
+			/* Check if PFCP item is used to describe protocol.
+			 * If yes, both spec and mask should be NULL.
+			 * If no, both spec and mask shouldn't be NULL.
+			 */
+			if ((!pfcp_spec && pfcp_mask) ||
+			    (pfcp_spec && !pfcp_mask)) {
+				rte_flow_error_set(error, EINVAL,
+					   RTE_FLOW_ERROR_TYPE_ITEM,
+					   item,
+					   "Invalid PFCP item");
+				return -ENOTSUP;
+			}
+			if (pfcp_spec && pfcp_mask) {
+				/* Check pfcp mask and update input set */
+				if (pfcp_mask->msg_type ||
+					pfcp_mask->msg_len ||
+					pfcp_mask->seid) {
+					rte_flow_error_set(error, EINVAL,
+						RTE_FLOW_ERROR_TYPE_ITEM,
+						item,
+						"Invalid pfcp mask");
+					return -ENOTSUP;
+				}
+				if (pfcp_mask->s_field &&
+					pfcp_spec->s_field == 0x01 &&
+					ipv6_valiad)
+					*tun_type =
+					ICE_SW_TUN_PROFID_IPV6_PFCP_SESSION;
+				else if (pfcp_mask->s_field &&
+					pfcp_spec->s_field == 0x01)
+					*tun_type =
+					ICE_SW_TUN_PROFID_IPV4_PFCP_SESSION;
+				else if (pfcp_mask->s_field &&
+					!pfcp_spec->s_field &&
+					ipv6_valiad)
+					*tun_type =
+					ICE_SW_TUN_PROFID_IPV6_PFCP_NODE;
+				else if (pfcp_mask->s_field &&
+					!pfcp_spec->s_field)
+					*tun_type =
+					ICE_SW_TUN_PROFID_IPV4_PFCP_NODE;
+				else
+					return -ENOTSUP;
+			}
+			break;
+
 
 		case RTE_FLOW_ITEM_TYPE_VOID:
 			break;
@@ -1179,6 +1237,10 @@ ice_is_profile_rule(enum ice_sw_tunnel_type tun_type)
 	case ICE_SW_TUN_PROFID_IPV6_ESP:
 	case ICE_SW_TUN_PROFID_IPV6_AH:
 	case ICE_SW_TUN_PROFID_MAC_IPV6_L2TPV3:
+	case ICE_SW_TUN_PROFID_IPV4_PFCP_NODE:
+	case ICE_SW_TUN_PROFID_IPV4_PFCP_SESSION:
+	case ICE_SW_TUN_PROFID_IPV6_PFCP_NODE:
+	case ICE_SW_TUN_PROFID_IPV6_PFCP_SESSION:
 		return true;
 	default:
 		break;
-- 
2.19.1