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ethernet/mellanox: use core min/max MTU checking

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mlx4: min_mtu 46, max_mtu depends on hardware

mlx5: min_mtu 68, max_mtu depends on hardware

CC: netdev@vger.kernel.org
CC: Tariq Toukan <tariqt@mellanox.com>
CC: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jarod Wilson 2016-10-17 15:54:07 -04:00 committed by David S. Miller
parent 5777987e0f
commit b80f71f581
2 changed files with 10 additions and 22 deletions
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8
drivers/net/ethernet/mellanox/mlx4/en_netdev.c
View File

@ -2205,10 +2205,6 @@ static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
dev->mtu, new_mtu);
if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
en_err(priv, "Bad MTU size:%d.\n", new_mtu);
return -EPERM;
}
if (priv->xdp_ring_num && MLX4_EN_EFF_MTU(new_mtu) > FRAG_SZ0) {
en_err(priv, "MTU size:%d requires frags but XDP running\n",
new_mtu);
@ -3288,6 +3284,10 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
}
/* MTU range: 46 - hw-specific max */
dev->min_mtu = MLX4_EN_MIN_MTU;
dev->max_mtu = priv->max_mtu;
mdev->pndev[port] = dev;
mdev->upper[port] = NULL;

24
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -2851,31 +2851,13 @@ static int mlx5e_set_features(struct net_device *netdev,
return err ? -EINVAL : 0;
}
#define MXL5_HW_MIN_MTU 64
#define MXL5E_MIN_MTU (MXL5_HW_MIN_MTU + ETH_FCS_LEN)
static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5_core_dev *mdev = priv->mdev;
bool was_opened;
u16 max_mtu;
u16 min_mtu;
int err = 0;
bool reset;
mlx5_query_port_max_mtu(mdev, &max_mtu, 1);
max_mtu = MLX5E_HW2SW_MTU(max_mtu);
min_mtu = MLX5E_HW2SW_MTU(MXL5E_MIN_MTU);
if (new_mtu > max_mtu || new_mtu < min_mtu) {
netdev_err(netdev,
"%s: Bad MTU (%d), valid range is: [%d..%d]\n",
__func__, new_mtu, min_mtu, max_mtu);
return -EINVAL;
}
mutex_lock(&priv->state_lock);
reset = !priv->params.lro_en &&
@ -3835,6 +3817,7 @@ int mlx5e_attach_netdev(struct mlx5_core_dev *mdev, struct net_device *netdev)
{
const struct mlx5e_profile *profile;
struct mlx5e_priv *priv;
u16 max_mtu;
int err;
priv = netdev_priv(netdev);
@ -3865,6 +3848,11 @@ int mlx5e_attach_netdev(struct mlx5_core_dev *mdev, struct net_device *netdev)
mlx5e_init_l2_addr(priv);
/* MTU range: 68 - hw-specific max */
netdev->min_mtu = ETH_MIN_MTU;
mlx5_query_port_max_mtu(priv->mdev, &max_mtu, 1);
netdev->max_mtu = MLX5E_HW2SW_MTU(max_mtu);
mlx5e_set_dev_port_mtu(netdev);
if (profile->enable)