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IB/mlx5: Allow XRC usage via verbs in DEVX context

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Allows XRC usage from the verbs flow in a DEVX context.
As XRCD is some shared kernel resource between processes it should be
created with UID=0 to point on that.

As a result once XRC QP/SRQ are created they must be used as well with
UID=0 so that firmware will allow the XRCD usage.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Yishai Hadas 2018-11-26 08:28:38 +02:00 committed by Doug Ledford
parent 719598c98d
commit 5aa3771ded
3 changed files with 6 additions and 9 deletions
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1
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -543,7 +543,6 @@ struct mlx5_ib_srq {
struct mlx5_ib_xrcd {
struct ib_xrcd ibxrcd;
u32 xrcdn;
u16 uid;
};
enum mlx5_ib_mtt_access_flags {

12
drivers/infiniband/hw/mlx5/qp.c
View File

@ -775,6 +775,7 @@ static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
__be64 *pas;
void *qpc;
int err;
u16 uid;
err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd));
if (err) {
@ -836,7 +837,8 @@ static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
goto err_umem;
}
MLX5_SET(create_qp_in, *in, uid, to_mpd(pd)->uid);
uid = (attr->qp_type != IB_QPT_XRC_TGT) ? to_mpd(pd)->uid : 0;
MLX5_SET(create_qp_in, *in, uid, uid);
pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, *in, pas);
if (ubuffer->umem)
mlx5_ib_populate_pas(dev, ubuffer->umem, page_shift, pas, 0);
@ -5514,7 +5516,6 @@ struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_ib_xrcd *xrcd;
int err;
u16 uid;
if (!MLX5_CAP_GEN(dev->mdev, xrc))
return ERR_PTR(-ENOSYS);
@ -5523,14 +5524,12 @@ struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
if (!xrcd)
return ERR_PTR(-ENOMEM);
uid = context ? to_mucontext(context)->devx_uid : 0;
err = mlx5_cmd_xrcd_alloc(dev->mdev, &xrcd->xrcdn, uid);
err = mlx5_cmd_xrcd_alloc(dev->mdev, &xrcd->xrcdn, 0);
if (err) {
kfree(xrcd);
return ERR_PTR(-ENOMEM);
}
xrcd->uid = uid;
return &xrcd->ibxrcd;
}
@ -5538,10 +5537,9 @@ int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
{
struct mlx5_ib_dev *dev = to_mdev(xrcd->device);
u32 xrcdn = to_mxrcd(xrcd)->xrcdn;
u16 uid = to_mxrcd(xrcd)->uid;
int err;
err = mlx5_cmd_xrcd_dealloc(dev->mdev, xrcdn, uid);
err = mlx5_cmd_xrcd_dealloc(dev->mdev, xrcdn, 0);
if (err)
mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn);

2
drivers/infiniband/hw/mlx5/srq.c
View File

@ -113,7 +113,7 @@ static int create_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq,
in->log_page_size = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
in->page_offset = offset;
in->uid = to_mpd(pd)->uid;
in->uid = (in->type != IB_SRQT_XRC) ? to_mpd(pd)->uid : 0;
if (MLX5_CAP_GEN(dev->mdev, cqe_version) == MLX5_CQE_VERSION_V1 &&
in->type != IB_SRQT_BASIC)
in->user_index = uidx;