diff options
author | Hadar Hen Zion <hadarh@mellanox.com> | 2015-07-27 14:46:34 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2015-07-27 15:00:37 -0700 |
commit | e38af4faf01d0b35df6995fb395e5fa4a4898289 (patch) | |
tree | 67caf30865de860044d1dae8ee9c84b4cdc4d0eb /drivers/net/ethernet/mellanox/mlx4/en_rx.c | |
parent | e802f8e4c54e6adf4215ef9fa3d6eea8fcb10bf9 (diff) | |
download | talos-op-linux-e38af4faf01d0b35df6995fb395e5fa4a4898289.tar.gz talos-op-linux-e38af4faf01d0b35df6995fb395e5fa4a4898289.zip |
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_rx.c')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_rx.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index 10f6c2f1d5a0..a67fbb90d69e 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -912,6 +912,12 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud u16 vid = be16_to_cpu(cqe->sl_vid); __vlan_hwaccel_put_tag(gro_skb, htons(ETH_P_8021Q), vid); + } else if ((be32_to_cpu(cqe->vlan_my_qpn) & + MLX4_CQE_SVLAN_PRESENT_MASK) && + (dev->features & NETIF_F_HW_VLAN_STAG_RX)) { + __vlan_hwaccel_put_tag(gro_skb, + htons(ETH_P_8021AD), + be16_to_cpu(cqe->sl_vid)); } if (dev->features & NETIF_F_RXHASH) @@ -973,6 +979,11 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud MLX4_CQE_CVLAN_PRESENT_MASK) && (dev->features & NETIF_F_HW_VLAN_CTAG_RX)) __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), be16_to_cpu(cqe->sl_vid)); + else if ((be32_to_cpu(cqe->vlan_my_qpn) & + MLX4_CQE_SVLAN_PRESENT_MASK) && + (dev->features & NETIF_F_HW_VLAN_STAG_RX)) + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021AD), + be16_to_cpu(cqe->sl_vid)); if (ring->hwtstamp_rx_filter == HWTSTAMP_FILTER_ALL) { timestamp = mlx4_en_get_cqe_ts(cqe); @@ -1070,7 +1081,10 @@ static const int frag_sizes[] = { void mlx4_en_calc_rx_buf(struct net_device *dev) { struct mlx4_en_priv *priv = netdev_priv(dev); - int eff_mtu = dev->mtu + ETH_HLEN + VLAN_HLEN; + /* VLAN_HLEN is added twice,to support skb vlan tagged with multiple + * headers. (For example: ETH_P_8021Q and ETH_P_8021AD). + */ + int eff_mtu = dev->mtu + ETH_HLEN + (2 * VLAN_HLEN); int buf_size = 0; int i = 0; |