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| author | Hadar Hen Zion <hadarh@mellanox.com> | 2015-07-27 14:46:34 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-07-28 01:00:37 +0300 |
| commit | e38af4faf01d0b35df6995fb395e5fa4a4898289 (patch) | |
| tree | 67caf30865de860044d1dae8ee9c84b4cdc4d0eb /drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | |
| parent | e802f8e4c54e6adf4215ef9fa3d6eea8fcb10bf9 (diff) | |
| download | linux-e38af4faf01d0b35df6995fb395e5fa4a4898289.tar.xz | |
net/mlx4_en: Add support for hardware accelerated 802.1ad vlan
To enable device support in accelerated 802.1ad vlan, the port
capability "packet has vlan enable" (phv_en) should be set.
Firmware won't work properly, in case phv_en is not set.
The user can enable "phv_en" port capability with the new ethtool
private flag phv-bit. The phv-bit private flag default value is OFF,
users who are interested in 802.1ad hardware acceleration should turn ON
the phv-bit private flag:
$ ethtool --set-priv-flags eth1 phv-bit on
Once the private flag is set, the device is ready for 802.1ad vlan
acceleration.
The user should also change the interface device features and turn on
"tx-vlan-stag-hw-insert" which is off by default:
$ ethtool -K eth1 tx-vlan-stag-hw-insert on
"phv-bit" private flag setting is available only for Physical
Functions(PF), the Virtual Function (VF) will be able to use the feature
by setting "tx-vlan-stag-hw-insert" ethtool device feature only if the
feature was enabled by the Hypervisor.
Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/en_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c index 70f65534e786..f79d8124321e 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c @@ -102,6 +102,7 @@ mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo) static const char mlx4_en_priv_flags[][ETH_GSTRING_LEN] = { "blueflame", + "phv-bit" }; static const char main_strings[][ETH_GSTRING_LEN] = { @@ -1797,9 +1798,13 @@ static int mlx4_en_get_ts_info(struct net_device *dev, static int mlx4_en_set_priv_flags(struct net_device *dev, u32 flags) { struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; bool bf_enabled_new = !!(flags & MLX4_EN_PRIV_FLAGS_BLUEFLAME); bool bf_enabled_old = !!(priv->pflags & MLX4_EN_PRIV_FLAGS_BLUEFLAME); + bool phv_enabled_new = !!(flags & MLX4_EN_PRIV_FLAGS_PHV); + bool phv_enabled_old = !!(priv->pflags & MLX4_EN_PRIV_FLAGS_PHV); int i; + int ret = 0; if (bf_enabled_new != bf_enabled_old) { if (bf_enabled_new) { @@ -1825,6 +1830,17 @@ static int mlx4_en_set_priv_flags(struct net_device *dev, u32 flags) bf_enabled_new ? "Enabled" : "Disabled"); } + if (phv_enabled_new != phv_enabled_old) { + ret = set_phv_bit(mdev->dev, priv->port, (int)phv_enabled_new); + if (ret) + return ret; + else if (phv_enabled_new) + priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV; + else + priv->pflags &= ~MLX4_EN_PRIV_FLAGS_PHV; + en_info(priv, "PHV bit %s\n", + phv_enabled_new ? "Enabled" : "Disabled"); + } return 0; } |