net/mlx5: support adding MAC address on Windows

Get the list of MAC addresses and verify if the input mac parameter
already exists. If not - return -ENOTSUP (as Windows does not support
adding new MAC addresses). If the MAC address exists (EEXIST) return 0
(the equivalent of Linux implementation of this API).

Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>

diff --git a/drivers/net/mlx5/windows/mlx5_os.c b/drivers/net/mlx5/windows/mlx5_os.c
index a8bef70..0e5433e 100644 (file)
--- a/drivers/net/mlx5/windows/mlx5_os.c
+++ b/drivers/net/mlx5/windows/mlx5_os.c
@@ -188,6 +188,42 @@ mlx5_os_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
        DRV_LOG(WARNING, "%s: is not supported", __func__);
 }
 
+/**
+ * Adds a MAC address to the device
+ * Currently it has no support under Windows.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ * @param mac_addr
+ *   MAC address to register.
+ * @param index
+ *   MAC address index.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise
+ */
+int
+mlx5_os_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac,
+                    uint32_t index)
+{
+       (void)index;
+       struct rte_ether_addr lmac;
+
+       if (mlx5_get_mac(dev, &lmac.addr_bytes)) {
+               DRV_LOG(ERR,
+                       "port %u cannot get MAC address, is mlx5_en"
+                       " loaded? (errno: %s)",
+                       dev->data->port_id, strerror(rte_errno));
+               return rte_errno;
+       }
+       if (!rte_is_same_ether_addr(&lmac, mac)) {
+               DRV_LOG(ERR,
+                       "adding new mac address to device is unsupported");
+               return -ENOTSUP;
+       }
+       return 0;
+}
+
 /**
  * Modify a VF MAC address
  * Currently it has no support under Windows.