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net/mlx4_en: Avoid changing dev->features directly in run-time

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[ Upstream commit 925ab1aa93 ]

It's forbidden to manually change dev->features in run-time. Currently, this is
done in the driver to make sure that GSO_UDP_TUNNEL is advertized only when
VXLAN tunnel is set. However, since the stack actually does features intersection
with hw_enc_features, we can safely revert to advertizing features early when
registering the netdevice.

Fixes: f4a1edd561 ('net/mlx4_en: Advertize encapsulation offloads [...]')
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eugenia Emantayev 2016-02-17 17:24:27 +02:00 committed by Greg Kroah-Hartman
parent 7675c3c6bd
commit 1cabc3e35f
1 changed files with 5 additions and 4 deletions
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9
drivers/net/ethernet/mellanox/mlx4/en_netdev.c
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@ -2381,8 +2381,6 @@ static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
/* set offloads */
priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
priv->dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
priv->dev->features |= NETIF_F_GSO_UDP_TUNNEL;
}
static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
@ -2393,8 +2391,6 @@ static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
/* unset offloads */
priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL);
priv->dev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL;
priv->dev->features &= ~NETIF_F_GSO_UDP_TUNNEL;
ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
VXLAN_STEER_BY_OUTER_MAC, 0);
@ -3020,6 +3016,11 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
priv->rss_hash_fn = ETH_RSS_HASH_TOP;
}
if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
dev->features |= NETIF_F_GSO_UDP_TUNNEL;
}
mdev->pndev[port] = dev;
mdev->upper[port] = NULL;