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net/mlx4_en: Add RX-FCS support 

Enabled when device supports KEEP FCS. When the flag is set, Ethernet FCS
is appended to the end of the frame, controlled by ethtool.

Signed-off-by: Muhammad Mahajna <muhammadm@mellanox.com>
Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Muhammad Mahajna 2015-04-02 16:31:21 +03:00 committed by David S. Miller
parent 51af33cfed
commit f0df35037a
2 changed files with 31 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/net/ethernet/mellanox/mlx4/en_netdev.c
View File

@ -2195,15 +2195,19 @@ static int mlx4_en_set_features(struct net_device *netdev,
netdev_features_t features)
{
struct mlx4_en_priv *priv = netdev_priv(netdev);
bool reset = false;
int ret = 0;
if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
en_info(priv, "Turn %s RX-FCS\n",
(features & NETIF_F_RXFCS) ? "ON" : "OFF");
reset = true;
}
if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
en_info(priv, "Turn %s RX vlan strip offload\n",
(features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
features);
if (ret)
return ret;
reset = true;
}
if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
@ -2216,8 +2220,14 @@ static int mlx4_en_set_features(struct net_device *netdev,
mlx4_en_update_loopback_state(netdev, features);
}
return 0;
if (reset) {
ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
features);
if (ret)
return ret;
}
return 0;
}
static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
@ -2901,6 +2911,9 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
dev->hw_features |= NETIF_F_LOOPBACK |
NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
dev->hw_features |= NETIF_F_RXFCS;
if (mdev->dev->caps.steering_mode ==
MLX4_STEERING_MODE_DEVICE_MANAGED &&
mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
@ -2997,7 +3010,8 @@ int mlx4_en_reset_config(struct net_device *dev,
if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
!DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX))
!DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
!DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
return 0; /* Nothing to change */
if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
@ -3036,6 +3050,13 @@ int mlx4_en_reset_config(struct net_device *dev,
dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
}
if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
if (features & NETIF_F_RXFCS)
dev->features |= NETIF_F_RXFCS;
else
dev->features &= ~NETIF_F_RXFCS;
}
/* RX vlan offload and RX time-stamping can't co-exist !
* Regardless of the caller's choice,
* Turn Off RX vlan offload in case of time-stamping is ON

5
drivers/net/ethernet/mellanox/mlx4/en_rx.c
View File

@ -1116,7 +1116,10 @@ static int mlx4_en_config_rss_qp(struct mlx4_en_priv *priv, int qpn,
/* Cancel FCS removal if FW allows */
if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) {
context->param3 |= cpu_to_be32(1 << 29);
ring->fcs_del = ETH_FCS_LEN;
if (priv->dev->features & NETIF_F_RXFCS)
ring->fcs_del = 0;
else
ring->fcs_del = ETH_FCS_LEN;
} else
ring->fcs_del = 0;