diff options
| author |   Amir Vadai <amirv@mellanox.com> | 2013-04-23 06:06:49 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-04-24 16:30:14 -0400 |
| commit | ec693d47010e8302e61e0bdf3f47496c5610641a (patch) | |
| tree | 8fbcfe632cb618318dcb1c9a9050afd025462b0a /drivers/net/ethernet/mellanox/mlx4/cq.c | |
| parent | net/mlx4_core: Read HCA frequency and map internal clock (diff) | |
| download | linux-dev-ec693d47010e8302e61e0bdf3f47496c5610641a.tar.xz linux-dev-ec693d47010e8302e61e0bdf3f47496c5610641a.zip | |
net/mlx4_en: Add HW timestamping (TS) support
The patch allows to enable/disable HW timestamping for incoming and/or
outgoing packets. It adds and initializes all structs and callbacks
needed by kernel TS API.
To enable/disable HW timestamping appropriate ioctl should be used.
Currently HWTSTAMP_FILTER_ALL/NONE and HWTSAMP_TX_ON/OFF only are
supported.
When enabling TS on receive flow - VLAN stripping will be disabled.
Also were made all relevant changes in RX/TX flows to consider TS request
and plant HW timestamps into relevant structures.
mlx4_ib was fixed to compile with new mlx4_cq_alloc() signature.
Signed-off-by: Eugenia Emantayev <eugenia@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/cq.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/cq.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/cq.c b/drivers/net/ethernet/mellanox/mlx4/cq.c index 0706623cfb96..004e4231af67 100644 --- a/drivers/net/ethernet/mellanox/mlx4/cq.c +++ b/drivers/net/ethernet/mellanox/mlx4/cq.c @@ -240,9 +240,10 @@ static void mlx4_cq_free_icm(struct mlx4_dev *dev, int cqn) __mlx4_cq_free_icm(dev, cqn); } -int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, struct mlx4_mtt *mtt, - struct mlx4_uar *uar, u64 db_rec, struct mlx4_cq *cq, - unsigned vector, int collapsed) +int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, + struct mlx4_mtt *mtt, struct mlx4_uar *uar, u64 db_rec, + struct mlx4_cq *cq, unsigned vector, int collapsed, + int timestamp_en) { struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_cq_table *cq_table = &priv->cq_table; @@ -276,6 +277,9 @@ int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, struct mlx4_mtt *mtt, memset(cq_context, 0, sizeof *cq_context); cq_context->flags = cpu_to_be32(!!collapsed << 18); + if (timestamp_en) + cq_context->flags |= cpu_to_be32(1 << 19); + cq_context->logsize_usrpage = cpu_to_be32((ilog2(nent) << 24) | uar->index); cq_context->comp_eqn = priv->eq_table.eq[vector].eqn; cq_context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT; |