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| author |   Eran Ben Elisha <eranbe@mellanox.com> | 2015-12-29 14:58:31 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-01-05 14:11:50 -0500 |
| commit | ef9814deafd0c83a358d49e3709c3e16cc352118 (patch) | |
| tree | 19247899ec032c9b104a68ddcf915351379b6db6 /drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | |
| parent | net/mlx5_core: Introduce access function to read internal timer (diff) | |
| download | linux-dev-ef9814deafd0c83a358d49e3709c3e16cc352118.tar.xz linux-dev-ef9814deafd0c83a358d49e3709c3e16cc352118.zip | |
net/mlx5e: Add HW timestamping (TS) support
Add support for enable/disable HW timestamping for incoming and/or
outgoing packets. To enable/disable HW timestamping appropriate
ioctl should be used. Currently HWTSTAMP_FILTER_ALL/NONE and
HWTSAMP_TX_ON/OFF only are supported. Make all relevant changes in
RX/TX flows to consider TS request and plant HW timestamps into
relevant structures.
Add internal clock for converting hardware timestamp to nanoseconds. In
addition, add a service task to catch internal clock overflow, to make
sure timestamping is accurate.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.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_tx.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c index aa037eb1a0b2..2c3fba0fff54 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c @@ -282,6 +282,9 @@ static netdev_tx_t mlx5e_sq_xmit(struct mlx5e_sq *sq, struct sk_buff *skb) netdev_tx_sent_queue(sq->txq, wi->num_bytes); + if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) + skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; + if (unlikely(!mlx5e_sq_has_room_for(sq, MLX5E_SQ_STOP_ROOM))) { netif_tx_stop_queue(sq->txq); sq->stats.stopped++; @@ -380,6 +383,15 @@ bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq) continue; } + if (unlikely(skb_shinfo(skb)->tx_flags & + SKBTX_HW_TSTAMP)) { + struct skb_shared_hwtstamps hwts = {}; + + mlx5e_fill_hwstamp(sq->tstamp, + get_cqe_ts(cqe), &hwts); + skb_tstamp_tx(skb, &hwts); + } + for (j = 0; j < wi->num_dma; j++) { struct mlx5e_sq_dma *dma = mlx5e_dma_get(sq, dma_fifo_cc++); |