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IB/mlx5: Report correctly tag matching rendezvous capability

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Userspace expects the IB_TM_CAP_RC bit to indicate that the device
supports RC transport tag matching with rendezvous offload. However the
firmware splits this into two capabilities for eager and rendezvous tag
matching.

Only if the FW supports both modes should userspace be told the tag
matching capability is available.

Cc: <stable@vger.kernel.org> # 4.13
Fixes: eb76189435 ("IB/mlx5: Fill XRQ capabilities")
Signed-off-by: Danit Goldberg <danitg@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Danit Goldberg
2019-07-05 19:21:57 +03:00
zatwierdzone przez Jason Gunthorpe
rodzic a3a400da20
commit 89705e9270
2 zmienionych plików z 8 dodań i 4 usunięć
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8
drivers/infiniband/hw/mlx5/main.c
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@@ -1046,15 +1046,19 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
}
if (MLX5_CAP_GEN(mdev, tag_matching)) {
props->tm_caps.max_rndv_hdr_size = MLX5_TM_MAX_RNDV_MSG_SIZE;
props->tm_caps.max_num_tags =
(1 << MLX5_CAP_GEN(mdev, log_tag_matching_list_sz)) - 1;
props->tm_caps.flags = IB_TM_CAP_RC;
props->tm_caps.max_ops =
1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
props->tm_caps.max_sge = MLX5_TM_MAX_SGE;
}
if (MLX5_CAP_GEN(mdev, tag_matching) &&
MLX5_CAP_GEN(mdev, rndv_offload_rc)) {
props->tm_caps.flags = IB_TM_CAP_RNDV_RC;
props->tm_caps.max_rndv_hdr_size = MLX5_TM_MAX_RNDV_MSG_SIZE;
}
if (MLX5_CAP_GEN(dev->mdev, cq_moderation)) {
props->cq_caps.max_cq_moderation_count =
MLX5_MAX_CQ_COUNT;