[dpdk-dev] [PATCH v2 3/3] net/mlx5: set VF MAC address from host

[Thomas Monjalon <thomas@monjalon.net>]

Allow to configure the default MAC address of a VF
via its representor port in the host.

This patch is a stub to demonstrate how to implement a VF operation.
The real code is not implemented.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
---
 drivers/net/mlx5/mlx5.c     |  6 ++++++
 drivers/net/mlx5/mlx5.h     |  1 +
 drivers/net/mlx5/mlx5_mac.c | 19 +++++++++++++++++++
 3 files changed, 26 insertions(+)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index fac510507d..b679b5e299 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -1073,6 +1073,11 @@ const struct eth_dev_ops mlx5_dev_ops_isolate = {
 	.get_module_eeprom = mlx5_get_module_eeprom,
 };
 
+/* Available operations for VF connected to a representor. */
+const struct eth_dev_ops mlx5_remote_vf_ops = {
+	.mac_addr_set = mlx5_vf_mac_addr_set,
+};
+
 /**
  * Verify and store value for device argument.
  *
@@ -2130,6 +2135,7 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
 	eth_dev->rx_pkt_burst = removed_rx_burst;
 	eth_dev->tx_pkt_burst = removed_tx_burst;
 	eth_dev->dev_ops = &mlx5_dev_ops;
+	eth_dev->vf_ops = &mlx5_remote_vf_ops;
 	/* Register MAC address. */
 	claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0));
 	if (config.vf && config.vf_nl_en)
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index b6a51b2b4d..e34a24ee7c 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -754,6 +754,7 @@ void mlx5_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
 int mlx5_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac,
 		      uint32_t index, uint32_t vmdq);
 int mlx5_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr);
+int mlx5_vf_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac);
 int mlx5_set_mc_addr_list(struct rte_eth_dev *dev,
 			struct rte_ether_addr *mc_addr_set,
 			uint32_t nb_mc_addr);
diff --git a/drivers/net/mlx5/mlx5_mac.c b/drivers/net/mlx5/mlx5_mac.c
index 0ffef5c5db..4c4dd55b86 100644
--- a/drivers/net/mlx5/mlx5_mac.c
+++ b/drivers/net/mlx5/mlx5_mac.c
@@ -202,6 +202,25 @@ mlx5_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr)
 	return mlx5_mac_addr_add(dev, mac_addr, 0, 0);
 }
 
+/**
+ * DPDK callback to set primary MAC address of the remote VF.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure of a representor.
+ * @param mac_addr
+ *   MAC address to register in the remote VF.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int mlx5_vf_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac)
+{
+	DRV_LOG(DEBUG, "VF represented by port %u setting primary MAC address",
+		dev->data->port_id);
+	/* TODO: should not be this dev but its VF */
+	return mlx5_nl_mac_addr_add(dev, mac, 0);
+}
+
 /**
  * DPDK callback to set multicast addresses list.
  *
-- 
2.23.0