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| author | Saeed Mahameed <saeedm@mellanox.com> | 2016-09-21 12:19:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-09-22 09:51:41 +0300 |
| commit | b5503b994ed5ed8dbfe821317e7b5b38acb065c5 (patch) | |
| tree | 828873ca28180be2736d83e917105c7acf333ac0 /drivers/net/ethernet/mellanox/mlx5/core/en_stats.h | |
| parent | f10b7cc7707f7d598e3ddacd848080b18ba4cbff (diff) | |
| download | linux-b5503b994ed5ed8dbfe821317e7b5b38acb065c5.tar.xz | |
net/mlx5e: XDP TX forwarding support
Adding support for XDP_TX forwarding from xdp program.
Using XDP, now user can loop packets out of the same port.
We create a dedicated TX SQ for each channel that will serve
XDP programs that return XDP_TX action to loop packets back to
the wire directly from the channel RQ RX path.
For that RX pages will now need to be mapped bi-directionally,
and on XDP_TX action we will sync the page back to device then
queue it into SQ for transmission. The XDP xmit frame function will
report back to the RX path if the page was consumed (transmitted), if so,
RX path will forget about that page as if it were released to the stack.
Later on, on XDP TX completion, the page will be released back to the
page cache.
For simplicity this patch will hit a doorbell on every XDP TX packet.
Next patch will introduce a xmit more like mechanism that will
queue up more than one packet into SQ w/o notifying the hardware,
once RX napi loop is done we will hit doorbell once for all XDP TX
packets form the previous loop. This should drastically improve
XDP TX performance.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_stats.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_stats.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h index 084d6c893a6e..57452fdc5154 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h @@ -66,6 +66,8 @@ struct mlx5e_sw_stats { u64 rx_csum_complete; u64 rx_csum_unnecessary_inner; u64 rx_xdp_drop; + u64 rx_xdp_tx; + u64 rx_xdp_tx_full; u64 tx_csum_partial; u64 tx_csum_partial_inner; u64 tx_queue_stopped; @@ -102,6 +104,8 @@ static const struct counter_desc sw_stats_desc[] = { { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_complete) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_unnecessary_inner) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_xdp_drop) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_xdp_tx) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_xdp_tx_full) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_csum_partial) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_csum_partial_inner) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_queue_stopped) }, @@ -281,6 +285,8 @@ struct mlx5e_rq_stats { u64 lro_packets; u64 lro_bytes; u64 xdp_drop; + u64 xdp_tx; + u64 xdp_tx_full; u64 wqe_err; u64 mpwqe_filler; u64 buff_alloc_err; @@ -299,6 +305,8 @@ static const struct counter_desc rq_stats_desc[] = { { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, csum_unnecessary_inner) }, { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, csum_none) }, { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, xdp_drop) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, xdp_tx) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, xdp_tx_full) }, { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, lro_packets) }, { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, lro_bytes) }, { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, wqe_err) }, |