diff options
| author | Haggai Abramovsky <hagaya@mellanox.com> | 2016-01-14 20:12:58 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-01-21 20:01:08 +0300 |
| commit | f72300c56c3bedac5fdb22cdc90f6633dc858c84 (patch) | |
| tree | 19c88374ce5a680782969d8410c7fa54b2e57feb /drivers | |
| parent | cfb5e088e26ae0e12064171f645ed022cf6d55b9 (diff) | |
| download | linux-f72300c56c3bedac5fdb22cdc90f6633dc858c84.tar.xz | |
IB/mlx5: Expose CQE version to user-space
Per user context, work with CQE version that both the user-space
and the kernel support. Report this CQE version via the response of
the alloc_ucontext command.
Signed-off-by: Haggai Abramovsky <hagaya@mellanox.com>
Reviewed-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 15 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/user.h | 8 |
2 files changed, 18 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index f82336699c3e..829c37c95d60 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -869,7 +869,7 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, if (req.total_num_uuars == 0) return ERR_PTR(-EINVAL); - if (req.comp_mask) + if (req.comp_mask || req.reserved0 || req.reserved1 || req.reserved2) return ERR_PTR(-EOPNOTSUPP); if (reqlen > sizeof(req) && @@ -892,6 +892,9 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, resp.max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz); resp.max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz); resp.max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz); + resp.cqe_version = min_t(__u8, + (__u8)MLX5_CAP_GEN(dev->mdev, cqe_version), + req.max_cqe_version); resp.response_length = min(offsetof(typeof(resp), response_length) + sizeof(resp.response_length), udata->outlen); @@ -945,8 +948,8 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, resp.tot_uuars = req.total_num_uuars; resp.num_ports = MLX5_CAP_GEN(dev->mdev, num_ports); - if (field_avail(typeof(resp), reserved2, udata->outlen)) - resp.response_length += sizeof(resp.reserved2); + if (field_avail(typeof(resp), cqe_version, udata->outlen)) + resp.response_length += sizeof(resp.cqe_version); if (field_avail(typeof(resp), hca_core_clock_offset, udata->outlen)) { resp.comp_mask |= @@ -954,7 +957,9 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, resp.hca_core_clock_offset = offsetof(struct mlx5_init_seg, internal_timer_h) % PAGE_SIZE; - resp.response_length += sizeof(resp.hca_core_clock_offset); + resp.response_length += sizeof(resp.hca_core_clock_offset) + + sizeof(resp.reserved2) + + sizeof(resp.reserved3); } err = ib_copy_to_udata(udata, &resp, resp.response_length); @@ -965,6 +970,8 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, uuari->num_low_latency_uuars = req.num_low_latency_uuars; uuari->uars = uars; uuari->num_uars = num_uars; + context->cqe_version = resp.cqe_version; + return &context->ibucontext; out_uars: diff --git a/drivers/infiniband/hw/mlx5/user.h b/drivers/infiniband/hw/mlx5/user.h index 5bf0935f0cb5..41f0525e825c 100644 --- a/drivers/infiniband/hw/mlx5/user.h +++ b/drivers/infiniband/hw/mlx5/user.h @@ -69,6 +69,10 @@ struct mlx5_ib_alloc_ucontext_req_v2 { __u32 num_low_latency_uuars; __u32 flags; __u32 comp_mask; + __u8 max_cqe_version; + __u8 reserved0; + __u16 reserved1; + __u32 reserved2; }; enum mlx5_ib_alloc_ucontext_resp_mask { @@ -89,7 +93,9 @@ struct mlx5_ib_alloc_ucontext_resp { __u16 reserved1; __u32 comp_mask; __u32 response_length; - __u32 reserved2; + __u8 cqe_version; + __u8 reserved2; + __u16 reserved3; __u64 hca_core_clock_offset; }; |