[PATCH v5 1/8]i40e:support VxLAN packet identification in librte_ether

[Jijiang Liu <jijiang.liu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

Add data structures and APIs in librte_ether for supporting tunneling UDP port configuration on i40e,
Currently, only VxLAN is implemented, which include
 -  VxLAN UDP port initialization
 -  Add APIs to configure VxLAN UDP port
 
Signed-off-by: Jijiang Liu <jijiang.liu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Acked-by: Helin Zhang <helin.zhang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Acked-by: Jingjing Wu <jingjing.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Acked-by: Jing Chen <jing.d.chen-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>

---
 lib/librte_ether/rte_ethdev.c |   63 ++++++++++++++++++++++++++++++++++
 lib/librte_ether/rte_ethdev.h |   76 +++++++++++++++++++++++++++++++++++++++++
 lib/librte_ether/rte_ether.h  |    8 ++++
 3 files changed, 147 insertions(+), 0 deletions(-)

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index b71b679..642d312 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -2029,6 +2029,69 @@ rte_eth_dev_rss_hash_conf_get(uint8_t port_id,
 }
 
 int
+rte_eth_dev_udp_tunnel_add(uint8_t port_id,
+			   struct rte_eth_udp_tunnel *udp_tunnel,
+			   uint8_t count)
+{
+	uint8_t i;
+	struct rte_eth_dev *dev;
+	struct rte_eth_udp_tunnel *tunnel;
+
+	if (port_id >= nb_ports) {
+		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
+		return -ENODEV;
+	}
+
+	if (udp_tunnel == NULL) {
+		PMD_DEBUG_TRACE("Invalid udp_tunnel parameter\n");
+		return -EINVAL;
+	}
+	tunnel = udp_tunnel;
+
+	for (i = 0; i < count; i++, tunnel++) {
+		if (tunnel->prot_type >= RTE_TUNNEL_TYPE_MAX) {
+			PMD_DEBUG_TRACE("Invalid tunnel type\n");
+			return -EINVAL;
+		}
+	}
+
+	dev = &rte_eth_devices[port_id];
+	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->udp_tunnel_add, -ENOTSUP);
+	return (*dev->dev_ops->udp_tunnel_add)(dev, udp_tunnel, count);
+}
+
+int
+rte_eth_dev_udp_tunnel_delete(uint8_t port_id,
+			      struct rte_eth_udp_tunnel *udp_tunnel,
+			      uint8_t count)
+{
+	uint8_t i;
+	struct rte_eth_dev *dev;
+	struct rte_eth_udp_tunnel *tunnel;
+
+	if (port_id >= nb_ports) {
+		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
+		return -ENODEV;
+	}
+	dev = &rte_eth_devices[port_id];
+
+	if (udp_tunnel == NULL) {
+		PMD_DEBUG_TRACE("Invalid udp_tunnel parametr\n");
+		return -EINVAL;
+	}
+	tunnel = udp_tunnel;
+	for (i = 0; i < count; i++, tunnel++) {
+		if (tunnel->prot_type >= RTE_TUNNEL_TYPE_MAX) {
+			PMD_DEBUG_TRACE("Invalid tunnel type\n");
+			return -EINVAL;
+		}
+	}
+
+	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->udp_tunnel_del, -ENOTSUP);
+	return (*dev->dev_ops->udp_tunnel_del)(dev, udp_tunnel, count);
+}
+
+int
 rte_eth_led_on(uint8_t port_id)
 {
 	struct rte_eth_dev *dev;
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 3f79cc3..3f84c23 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -708,6 +708,26 @@ struct rte_fdir_conf {
 };
 
 /**
+ * UDP tunneling configuration.
+ */
+struct rte_eth_udp_tunnel {
+	uint16_t udp_port;
+	uint8_t prot_type;
+};
+
+/**
+ * Tunneled type.
+ */
+enum rte_eth_tunnel_type {
+	RTE_TUNNEL_TYPE_NONE = 0,
+	RTE_TUNNEL_TYPE_VXLAN,
+	RTE_TUNNEL_TYPE_GENEVE,
+	RTE_TUNNEL_TYPE_TEREDO,
+	RTE_TUNNEL_TYPE_NVGRE,
+	RTE_TUNNEL_TYPE_MAX,
+};
+
+/**
  *  Possible l4type of FDIR filters.
  */
 enum rte_l4type {
@@ -829,6 +849,7 @@ struct rte_intr_conf {
  * configuration settings may be needed.
  */
 struct rte_eth_conf {
+	enum rte_eth_tunnel_type tunnel_type;
 	uint16_t link_speed;
 	/**< ETH_LINK_SPEED_10[0|00|000], or 0 for autonegotation */
 	uint16_t link_duplex;
@@ -1262,6 +1283,17 @@ typedef int (*eth_mirror_rule_reset_t)(struct rte_eth_dev *dev,
 				  uint8_t rule_id);
 /**< @internal Remove a traffic mirroring rule on an Ethernet device */
 
+typedef int (*eth_udp_tunnel_add_t)(struct rte_eth_dev *dev,
+				    struct rte_eth_udp_tunnel *tunnel_udp,
+				    uint8_t count);
+/**< @internal Add tunneling UDP info */
+
+typedef int (*eth_udp_tunnel_del_t)(struct rte_eth_dev *dev,
+				    struct rte_eth_udp_tunnel *tunnel_udp,
+				    uint8_t count);
+/**< @internal Delete tunneling UDP info */
+
+
 #ifdef RTE_NIC_BYPASS
 
 enum {
@@ -1436,6 +1468,8 @@ struct eth_dev_ops {
 	eth_set_vf_rx_t            set_vf_rx;  /**< enable/disable a VF receive */
 	eth_set_vf_tx_t            set_vf_tx;  /**< enable/disable a VF transmit */
 	eth_set_vf_vlan_filter_t   set_vf_vlan_filter;  /**< Set VF VLAN filter */
+	eth_udp_tunnel_add_t       udp_tunnel_add;
+	eth_udp_tunnel_del_t       udp_tunnel_del;
 	eth_set_queue_rate_limit_t set_queue_rate_limit;   /**< Set queue rate limit */
 	eth_set_vf_rate_limit_t    set_vf_rate_limit;   /**< Set VF rate limit */
 
@@ -3327,6 +3361,48 @@ int
 rte_eth_dev_rss_hash_conf_get(uint8_t port_id,
 			      struct rte_eth_rss_conf *rss_conf);
 
+ /**
+ * Add tunneling UDP port configuration of Ethernet device
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param tunnel_udp
+ *   Where to store the current Tunneling UDP configuration
+ *   of the Ethernet device.
+ * @param count
+ *   How many configurations are going to added.
+ *
+ * @return
+ *   - (0) if successful.
+ *   - (-ENODEV) if port identifier is invalid.
+ *   - (-ENOTSUP) if hardware doesn't support tunnel type.
+ */
+int
+rte_eth_dev_udp_tunnel_add(uint8_t port_id,
+			struct rte_eth_udp_tunnel *tunnel_udp,
+			uint8_t count);
+
+ /**
+ * Detete tunneling UDP port configuration of Ethernet device
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param tunnel_udp
+ *   Where to store the current Tunneling UDP configuration
+ *   of the Ethernet device.
+ * @param count
+ *   How many configurations are going to deleted.
+ *
+ * @return
+ *   - (0) if successful.
+ *   - (-ENODEV) if port identifier is invalid.
+ *   - (-ENOTSUP) if hardware doesn't support tunnel type.
+ */
+int
+rte_eth_dev_udp_tunnel_delete(uint8_t port_id,
+			struct rte_eth_udp_tunnel *tunnel_udp,
+			uint8_t count);
+
 /**
  * add syn filter
  *
diff --git a/lib/librte_ether/rte_ether.h b/lib/librte_ether/rte_ether.h
index 2e08f23..ddbdbb3 100644
--- a/lib/librte_ether/rte_ether.h
+++ b/lib/librte_ether/rte_ether.h
@@ -286,6 +286,12 @@ struct vlan_hdr {
 	uint16_t eth_proto;/**< Ethernet type of encapsulated frame. */
 } __attribute__((__packed__));
 
+/* VXLAN protocol header */
+struct vxlan_hdr {
+	uint32_t vx_flags; /**< VxLAN flag. */
+	uint32_t vx_vni;   /**< VxLAN ID. */
+} __attribute__((__packed__));
+
 /* Ethernet frame types */
 #define ETHER_TYPE_IPv4 0x0800 /**< IPv4 Protocol. */
 #define ETHER_TYPE_IPv6 0x86DD /**< IPv6 Protocol. */
@@ -294,6 +300,8 @@ struct vlan_hdr {
 #define ETHER_TYPE_VLAN 0x8100 /**< IEEE 802.1Q VLAN tagging. */
 #define ETHER_TYPE_1588 0x88F7 /**< IEEE 802.1AS 1588 Precise Time Protocol. */
 
+#define ETHER_VXLAN_HLEN (sizeof(struct udp_hdr) + sizeof(struct vxlan_hdr))
+
 #ifdef __cplusplus
 }
 #endif
-- 
1.7.7.6