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| author | Tariq Toukan <tariqt@mellanox.com> | 2018-02-07 14:46:36 +0200 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@mellanox.com> | 2018-03-30 16:55:06 -0700 |
| commit | 22f4539881944a8acc9c6f5afa7aa7f028898002 (patch) | |
| tree | 0c914203d9a0d17238fc8f47add2dc2ba51e608b /drivers/net/ethernet/mellanox/mlx5/core/en.h | |
| parent | 121e89275471dccbd5b252e40ad6a823fa0527f7 (diff) | |
| download | linux-22f4539881944a8acc9c6f5afa7aa7f028898002.tar.bz2 | |
net/mlx5e: Support XDP over Striding RQ
Add XDP support over Striding RQ.
Now that linear SKB is supported over Striding RQ,
we can support XDP by setting stride size to PAGE_SIZE
and headroom to XDP_PACKET_HEADROOM.
Upon a MPWQE free, do not release pages that are being
XDP xmit, they will be released upon completions.
Striding RQ is capable of a higher packet-rate than
conventional RQ.
A performance gain is expected for all cases that had
a HW packet-rate bottleneck. This is the case whenever
using many flows that distribute to many cores.
Performance testing:
ConnectX-5, 24 rings, default MTU.
CQE compression ON (to reduce completions BW in PCI).
XDP_DROP packet rate:
--------------------------------------------------
| pkt size | XDP rate | 100GbE linerate | pct% |
--------------------------------------------------
| 64byte | 126.2 Mpps | 148.0 Mpps | 85% |
| 128byte | 80.0 Mpps | 84.8 Mpps | 94% |
| 256byte | 42.7 Mpps | 42.7 Mpps | 100% |
| 512byte | 23.4 Mpps | 23.4 Mpps | 100% |
--------------------------------------------------
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index a6ca54393bb6..7997d7c159db 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -457,6 +457,7 @@ struct mlx5e_mpw_info { struct mlx5e_umr_dma_info umr; u16 consumed_strides; u16 skbs_frags[MLX5_MPWRQ_PAGES_PER_WQE]; + DECLARE_BITMAP(xdp_xmit_bitmap, MLX5_MPWRQ_PAGES_PER_WQE); }; /* a single cache unit is capable to serve one napi call (for non-striding rq) |