[dpdk-dev] [PATCH] net/mlx5: support adding a new UDP tunnel

[Raslan Darawsheh <rasland@mellanox.com>]

This adds support for adding a new udp tunnel port
on a specific vxlan types.

currently we only support vxlan, vxlan-gpe on ports
4789, 4790 respectivly. without having to configure
anything in the NIC.

Signed-off-by: Raslan Darawsheh <rasland@mellanox.com>
---
 drivers/net/mlx5/mlx5.c | 26 ++++++++++++++++++++++++++
 drivers/net/mlx5/mlx5.h |  2 ++
 2 files changed, 28 insertions(+)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 962c0d5..dc7b10b 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -745,6 +745,31 @@ mlx5_free_verbs_buf(void *ptr, void *data __rte_unused)
 }
 
 /**
+ * DPDK callback to add udp tunnel port
+ *
+ * @param[in] dev
+ *   A pointer to eth_dev
+ * @param[in] udp_tunnel
+ *   A pointer to udp tunnel
+ *
+ * @return
+ *   0 on valid udp ports and tunnels, -ENOTSUP otherwise.
+ */
+int
+mlx5_udp_tunnel_port_add(struct rte_eth_dev *dev __rte_unused,
+			 struct rte_eth_udp_tunnel *udp_tunnel)
+{
+	assert(udp_tunnel != NULL);
+	if (udp_tunnel->prot_type == RTE_TUNNEL_TYPE_VXLAN &&
+	    udp_tunnel->udp_port == 4789)
+		return 0;
+	if (udp_tunnel->prot_type == RTE_TUNNEL_TYPE_VXLAN_GPE &&
+	    udp_tunnel->udp_port == 4790)
+		return 0;
+	return -ENOTSUP;
+}
+
+/**
  * Initialize process private data structure.
  *
  * @param dev
@@ -962,6 +987,7 @@ const struct eth_dev_ops mlx5_dev_ops = {
 	.rx_queue_intr_enable = mlx5_rx_intr_enable,
 	.rx_queue_intr_disable = mlx5_rx_intr_disable,
 	.is_removed = mlx5_is_removed,
+	.udp_tunnel_port_add  = mlx5_udp_tunnel_port_add,
 };
 
 /* Available operations from secondary process. */
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index f559f83..fda9f5d 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -674,6 +674,8 @@ int64_t mlx5_get_dbr(struct rte_eth_dev *dev,
 		     struct mlx5_devx_dbr_page **dbr_page);
 int32_t mlx5_release_dbr(struct rte_eth_dev *dev, uint32_t umem_id,
 			 uint64_t offset);
+int mlx5_udp_tunnel_port_add(struct rte_eth_dev *dev,
+			      struct rte_eth_udp_tunnel *udp_tunnel);
 
 /* mlx5_ethdev.c */
 
-- 
2.7.4