diff options
| author |   Eran Ben Elisha <eranbe@mellanox.com> | 2015-12-29 14:58:32 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-01-05 14:11:50 -0500 |
| commit | 3d8c38af149309feb2541b995b3a45df170d6da3 (patch) | |
| tree | da57592cc23e5b7ff6a640a0173a30f373a6e5ba /drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | |
| parent | net/mlx5e: Add HW timestamping (TS) support (diff) | |
| download | linux-dev-3d8c38af149309feb2541b995b3a45df170d6da3.tar.xz linux-dev-3d8c38af149309feb2541b995b3a45df170d6da3.zip | |
net/mlx5e: Add PTP Hardware Clock (PHC) support
Add a PHC support to the mlx5_en driver. Use reader/writer spinlocks to
protect the timecounter since every packet received needs to call
timecounter_cycle2time() when timestamping is enabled. This can become
a performance bottleneck with RSS and multiple receive queues if normal
spinlocks are used.
The driver has been tested with both Documentation/ptp/testptp and the
linuxptp project (http://linuxptp.sourceforge.net/) on a Mellanox
ConnectX-4 card.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index a8a90f3c5807..65624ac65b4c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -865,7 +865,8 @@ static int mlx5e_get_ts_info(struct net_device *dev, if (ret) return ret; - info->phc_index = -1; + info->phc_index = priv->tstamp.ptp ? + ptp_clock_index(priv->tstamp.ptp) : -1; if (!MLX5_CAP_GEN(priv->mdev, device_frequency_khz)) return 0; |