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IB/mlx5: Report mlx5 CQE compression caps during query

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The capabilities include:
- Max number of compressed and aggregated CQEs in a single session,
  while zero means unsupported.
- For Responder, there are two formats of mini CQE: mini CQE with Rx
  hash and mini CQE with checksum. They're mutual exclusive.

Signed-off-by: Bodong Wang <bodong@mellanox.com>
Reviewed-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Bodong Wang
2016-10-31 12:16:44 +02:00
committed by Doug Ledford
parent 191ded4a4d
commit 7e43a2a5ba
2 changed files with 22 additions and 0 deletions
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10
drivers/infiniband/hw/mlx5/main.c
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@@ -683,6 +683,16 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
if (field_avail(typeof(resp), reserved, uhw->outlen))
resp.response_length += sizeof(resp.reserved);
if (field_avail(typeof(resp), cqe_comp_caps, uhw->outlen)) {
resp.cqe_comp_caps.max_num =
MLX5_CAP_GEN(dev->mdev, cqe_compression) ?
MLX5_CAP_GEN(dev->mdev, cqe_compression_max_num) : 0;
resp.cqe_comp_caps.supported_format =
MLX5_IB_CQE_RES_FORMAT_HASH |
MLX5_IB_CQE_RES_FORMAT_CSUM;
resp.response_length += sizeof(resp.cqe_comp_caps);
}
if (uhw->outlen) {
err = ib_copy_to_udata(uhw, &resp, resp.response_length);