From: Ori Kam <orika@mellanox.com>
Date: Wed, 30 Oct 2019 23:53:16 +0000 (+0000)
Subject: net/mlx5: get hairpin capabilities
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=b6b3bf86bd1a;p=dpdk.git

net/mlx5: get hairpin capabilities

This commits adds the hairpin get capabilities function.

Signed-off-by: Ori Kam <orika@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
---

diff --git a/doc/guides/rel_notes/release_19_11.rst b/doc/guides/rel_notes/release_19_11.rst
index ccbdca1c5e..b08dbed7ee 100644
--- a/doc/guides/rel_notes/release_19_11.rst
+++ b/doc/guides/rel_notes/release_19_11.rst
@@ -166,6 +166,7 @@ New Features
   * Added support for VLAN set PCP offload command.
   * Added support for VLAN set VID offload command.
   * Added support for matching on packets withe Geneve tunnel header.
+  * Added hairpin support.
 
 * **Updated the AF_XDP PMD.**
 
diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 8e7ff1dbae..e72e9ebf35 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -1039,6 +1039,7 @@ const struct eth_dev_ops mlx5_dev_ops = {
 	.udp_tunnel_port_add  = mlx5_udp_tunnel_port_add,
 	.get_module_info = mlx5_get_module_info,
 	.get_module_eeprom = mlx5_get_module_eeprom,
+	.hairpin_cap_get = mlx5_hairpin_cap_get,
 };
 
 /* Available operations from secondary process. */
@@ -1101,6 +1102,7 @@ const struct eth_dev_ops mlx5_dev_ops_isolate = {
 	.is_removed = mlx5_is_removed,
 	.get_module_info = mlx5_get_module_info,
 	.get_module_eeprom = mlx5_get_module_eeprom,
+	.hairpin_cap_get = mlx5_hairpin_cap_get,
 };
 
 /**
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 566bf2dd8a..742bedd692 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -789,7 +789,8 @@ int mlx5_get_module_info(struct rte_eth_dev *dev,
 			 struct rte_eth_dev_module_info *modinfo);
 int mlx5_get_module_eeprom(struct rte_eth_dev *dev,
 			   struct rte_dev_eeprom_info *info);
-
+int mlx5_hairpin_cap_get(struct rte_eth_dev *dev,
+			 struct rte_eth_hairpin_cap *cap);
 /* mlx5_mac.c */
 
 int mlx5_get_mac(struct rte_eth_dev *dev, uint8_t (*mac)[RTE_ETHER_ADDR_LEN]);
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 2278b24c01..fe1b4d41b4 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -2114,3 +2114,30 @@ int mlx5_get_module_eeprom(struct rte_eth_dev *dev,
 	rte_free(eeprom);
 	return ret;
 }
+
+/**
+ * DPDK callback to retrieve hairpin capabilities.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ * @param[out] cap
+ *   Storage for hairpin capability data.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int mlx5_hairpin_cap_get(struct rte_eth_dev *dev,
+			 struct rte_eth_hairpin_cap *cap)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+
+	if (priv->sh->devx == 0) {
+		rte_errno = ENOTSUP;
+		return -rte_errno;
+	}
+	cap->max_nb_queues = UINT16_MAX;
+	cap->max_rx_2_tx = 1;
+	cap->max_tx_2_rx = 1;
+	cap->max_nb_desc = 8192;
+	return 0;
+}