diff options
| author | Hadar Hen Zion <hadarh@mellanox.com> | 2015-07-27 14:46:34 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-07-28 01:00:37 +0300 |
| commit | e38af4faf01d0b35df6995fb395e5fa4a4898289 (patch) | |
| tree | 67caf30865de860044d1dae8ee9c84b4cdc4d0eb /drivers/net/ethernet/mellanox/mlx4/en_tx.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_tx.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_tx.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c index 7c858f67ef28..494e7762fdb1 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c @@ -718,6 +718,7 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev) u32 index, bf_index; __be32 op_own; u16 vlan_tag = 0; + u16 vlan_proto = 0; int i_frag; int lso_header_size; void *fragptr = NULL; @@ -750,9 +751,10 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev) goto tx_drop; } - if (skb_vlan_tag_present(skb)) + if (skb_vlan_tag_present(skb)) { vlan_tag = skb_vlan_tag_get(skb); - + vlan_proto = be16_to_cpu(skb->vlan_proto); + } netdev_txq_bql_enqueue_prefetchw(ring->tx_queue); @@ -958,8 +960,11 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev) ring->bf.offset ^= ring->bf.buf_size; } else { tx_desc->ctrl.vlan_tag = cpu_to_be16(vlan_tag); - tx_desc->ctrl.ins_vlan = MLX4_WQE_CTRL_INS_CVLAN * - !!skb_vlan_tag_present(skb); + if (vlan_proto == ETH_P_8021AD) + tx_desc->ctrl.ins_vlan = MLX4_WQE_CTRL_INS_SVLAN; + else if (vlan_proto == ETH_P_8021Q) + tx_desc->ctrl.ins_vlan = MLX4_WQE_CTRL_INS_CVLAN; + tx_desc->ctrl.fence_size = real_size; /* Ensure new descriptor hits memory |