From 7e43a2a5bae39fedaa7cce21d637e0c8d96d8e54 Mon Sep 17 00:00:00 2001 From: Bodong Wang Date: Mon, 31 Oct 2016 12:16:44 +0200 Subject: IB/mlx5: Report mlx5 CQE compression caps during query 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 Reviewed-by: Matan Barak Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford --- drivers/infiniband/hw/mlx5/main.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/infiniband/hw') diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index a16207c33333..2687a93c4af2 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -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); -- cgit v1.2.3