[dpdk-dev] [PATCH v4 1/4] pipeline: support QinQ PPPoE encap

[Nemanja Marjanovic <nemanja.marjanovic@intel.com>]

From: "Nemanja Marjanovic" <nemanja.marjanovic@intel.com>

Add support of QinQ PPPoE packet encapsulation action.

Signed-off-by: Nemanja Marjanovic <nemanja.marjanovic@intel.com>
---
v4:Splitting of patches for easier review
---
 lib/librte_pipeline/rte_table_action.c | 61 ++++++++++++++++++++++++++
 lib/librte_pipeline/rte_table_action.h | 16 +++++++
 2 files changed, 77 insertions(+)

diff --git a/lib/librte_pipeline/rte_table_action.c b/lib/librte_pipeline/rte_table_action.c
index 7c7c8dd82..466019934 100644
--- a/lib/librte_pipeline/rte_table_action.c
+++ b/lib/librte_pipeline/rte_table_action.c
@@ -432,6 +432,7 @@ encap_valid(enum rte_table_action_encap_type encap)
 	case RTE_TABLE_ACTION_ENCAP_MPLS:
 	case RTE_TABLE_ACTION_ENCAP_PPPOE:
 	case RTE_TABLE_ACTION_ENCAP_VXLAN:
+	case RTE_TABLE_ACTION_ENCAP_QINQ_PPPOE:
 		return 1;
 	default:
 		return 0;
@@ -532,6 +533,13 @@ struct encap_vxlan_ipv6_vlan_data {
 	struct vxlan_hdr vxlan;
 } __attribute__((__packed__));
 
+struct encap_qinq_pppoe_data {
+	struct ether_hdr ether;
+	struct vlan_hdr svlan;
+	struct vlan_hdr cvlan;
+	struct pppoe_ppp_hdr pppoe_ppp;
+} __attribute__((__packed__));
+
 static size_t
 encap_data_size(struct rte_table_action_encap_config *encap)
 {
@@ -563,6 +571,9 @@ encap_data_size(struct rte_table_action_encap_config *encap)
 			else
 				return sizeof(struct encap_vxlan_ipv6_data);
 
+	case 1LLU << RTE_TABLE_ACTION_ENCAP_QINQ_PPPOE:
+			return sizeof(struct encap_qinq_pppoe_data);
+
 	default:
 		return 0;
 	}
@@ -599,6 +610,9 @@ encap_apply_check(struct rte_table_action_encap_params *p,
 	case RTE_TABLE_ACTION_ENCAP_VXLAN:
 		return 0;
 
+	case RTE_TABLE_ACTION_ENCAP_QINQ_PPPOE:
+		return 0;
+
 	default:
 		return -EINVAL;
 	}
@@ -676,6 +690,38 @@ encap_qinq_apply(void *data,
 	return 0;
 }
 
+static int
+encap_qinq_pppoe_apply(void *data,
+	struct rte_table_action_encap_params *p)
+{
+	struct encap_qinq_pppoe_data *d = data;
+
+	/* Ethernet */
+	ether_addr_copy(&p->qinq.ether.da, &d->ether.d_addr);
+	ether_addr_copy(&p->qinq.ether.sa, &d->ether.s_addr);
+	d->ether.ether_type = rte_htons(ETHER_TYPE_VLAN);
+
+	/* SVLAN */
+	d->svlan.vlan_tci = rte_htons(VLAN(p->qinq.svlan.pcp,
+		p->qinq.svlan.dei,
+		p->qinq.svlan.vid));
+	d->svlan.eth_proto = rte_htons(ETHER_TYPE_VLAN);
+
+	/* CVLAN */
+	d->cvlan.vlan_tci = rte_htons(VLAN(p->qinq.cvlan.pcp,
+		p->qinq.cvlan.dei,
+		p->qinq.cvlan.vid));
+	d->cvlan.eth_proto = rte_htons(ETHER_TYPE_PPPOE_SESSION);
+
+	/* PPPoE and PPP*/
+	d->pppoe_ppp.ver_type_code = rte_htons(0x1100);
+	d->pppoe_ppp.session_id = rte_htons(p->qinq_pppoe.pppoe.session_id);
+	d->pppoe_ppp.length = 0; /* not pre-computed */
+	d->pppoe_ppp.protocol = rte_htons(PPP_PROTOCOL_IP);
+
+	return 0;
+}
+
 static int
 encap_mpls_apply(void *data,
 	struct rte_table_action_encap_params *p)
@@ -921,6 +967,9 @@ encap_apply(void *data,
 	case RTE_TABLE_ACTION_ENCAP_VXLAN:
 		return encap_vxlan_apply(data, p, cfg);
 
+	case RTE_TABLE_ACTION_ENCAP_QINQ_PPPOE:
+		return encap_qinq_pppoe_apply(data, p);
+
 	default:
 		return -EINVAL;
 	}
@@ -1119,6 +1168,18 @@ pkt_work_encap(struct rte_mbuf *mbuf,
 		break;
 	}
 
+	case 1LLU << RTE_TABLE_ACTION_ENCAP_QINQ_PPPOE:
+	{
+		struct encap_qinq_pppoe_data *qinq_pppoe =
+			encap(ip, data, sizeof(struct encap_qinq_pppoe_data));
+		qinq_pppoe->pppoe_ppp.length = rte_htons(total_length + 2);
+		mbuf->data_off = ip_offset - (sizeof(struct rte_mbuf) +
+			sizeof(struct encap_qinq_pppoe_data));
+		mbuf->pkt_len = mbuf->data_len = total_length +
+			sizeof(struct encap_qinq_pppoe_data);
+		break;
+	}
+
 	case 1LLU << RTE_TABLE_ACTION_ENCAP_VXLAN:
 	{
 		if (cfg->vxlan.ip_version)
diff --git a/lib/librte_pipeline/rte_table_action.h b/lib/librte_pipeline/rte_table_action.h
index c96061291..53d16af8a 100644
--- a/lib/librte_pipeline/rte_table_action.h
+++ b/lib/librte_pipeline/rte_table_action.h
@@ -380,6 +380,9 @@ enum rte_table_action_encap_type {
 	 * Ether -> { Ether | VLAN | IP | UDP | VXLAN | Ether }
 	 */
 	RTE_TABLE_ACTION_ENCAP_VXLAN,
+
+	/** IP -> { Ether | S-VLAN | C-VLAN | PPPoE | PPP | IP } */
+	RTE_TABLE_ACTION_ENCAP_QINQ_PPPOE,
 };
 
 /** Pre-computed Ethernet header fields for encapsulation action. */
@@ -529,6 +532,16 @@ struct rte_table_action_encap_config {
 	};
 };
 
+/** QinQ_PPPoE encap paramaeters. */
+struct rte_table_encap_ether_qinq_pppoe {
+
+	/** Only valid when *type* is set to QinQ. */
+	struct rte_table_action_ether_hdr ether;
+	struct rte_table_action_vlan_hdr svlan; /**< Service VLAN header. */
+	struct rte_table_action_vlan_hdr cvlan; /**< Customer VLAN header. */
+	struct rte_table_action_pppoe_hdr pppoe; /**< PPPoE/PPP headers. */
+};
+
 /** Encap action parameters (per table rule). */
 struct rte_table_action_encap_params {
 	/** Encapsulation type. */
@@ -553,6 +566,9 @@ struct rte_table_action_encap_params {
 
 		/** Only valid when *type* is set to VXLAN. */
 		struct rte_table_action_encap_vxlan_params vxlan;
+
+		/** Only valid when *type* is set to QinQ_PPPoE. */
+		struct rte_table_encap_ether_qinq_pppoe qinq_pppoe;
 	};
 };
 
-- 
2.17.1

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