From ef96f7d46ad86625237da8a35e812bdf7896e640 Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Tue, 4 Jun 2013 05:13:28 +0000 Subject: [PATCH] net/mlx4_en: Handle unassigned VF MAC address correctly When a VF sense they didn't get MAC address, use random one. This will address the case of administrator not assigning MAC to the VF through the PF OS APIs and keep udev happy. Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 810aab01c3c9..89c47ea84b50 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -2119,6 +2119,7 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, struct mlx4_en_priv *priv; int i; int err; + u64 mac_u64; dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), MAX_TX_RINGS, MAX_RX_RINGS); @@ -2192,10 +2193,17 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, dev->addr_len = ETH_ALEN; mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); if (!is_valid_ether_addr(dev->dev_addr)) { - en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", - priv->port, dev->dev_addr); - err = -EINVAL; - goto out; + if (mlx4_is_slave(priv->mdev->dev)) { + eth_hw_addr_random(dev); + en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); + mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr); + mdev->dev->caps.def_mac[priv->port] = mac_u64; + } else { + en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", + priv->port, dev->dev_addr); + err = -EINVAL; + goto out; + } } memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac)); -- 2.20.1