diff options
| author |   Shawn Bohrer <sbohrer@rgmadvisors.com> | 2013-12-31 11:39:39 -0600 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-01-02 03:30:36 -0500 |
| commit | ad7d4eaed995d76fb24a18e202fdf5072197ff0a (patch) | |
| tree | 2625d165dd5b6972f582f19e20cc6c955fd9259a /drivers/net/ethernet/mellanox/mlx4/en_main.c | |
| parent | ipv4: switch and case should be at the same indent (diff) | |
| download | linux-dev-ad7d4eaed995d76fb24a18e202fdf5072197ff0a.tar.xz linux-dev-ad7d4eaed995d76fb24a18e202fdf5072197ff0a.zip | |
mlx4_en: Add PTP hardware clock
This adds a PHC to the mlx4_en driver. We 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.
This driver has been tested with both Documentation/ptp/testptp and the
linuxptp project (http://linuxptp.sourceforge.net/) on a Mellanox
ConnectX-3 card.
Signed-off-by: Shawn Bohrer <sbohrer@rgmadvisors.com>
Acked-By: Hadar Hen Zion <hadarh@mellanox.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/en_main.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_main.c b/drivers/net/ethernet/mellanox/mlx4/en_main.c index 725a4e1b5f67..d357bf5a4686 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_main.c @@ -199,6 +199,9 @@ static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr) if (mdev->pndev[i]) mlx4_en_destroy_netdev(mdev->pndev[i]); + if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) + mlx4_en_remove_timestamp(mdev); + flush_workqueue(mdev->workqueue); destroy_workqueue(mdev->workqueue); (void) mlx4_mr_free(dev, &mdev->mr); |