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IB/mlx5: Extend CQ creation to get uar page index from user space

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Extend CQ creation to get uar page index from user space, this mode can be
used with the UAR dynamic mode APIs to allocate/destroy a UAR object.

Link: https://lore.kernel.org/r/20200324060143.1569116-3-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Yishai Hadas
2020-03-24 08:01:40 +02:00
committed by Jason Gunthorpe
parent 342ee59de9
commit 64d99f6a62
2 changed files with 15 additions and 6 deletions
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17
drivers/infiniband/hw/mlx5/cq.c
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@@ -692,17 +692,19 @@ static int create_cq_user(struct mlx5_ib_dev *dev, struct ib_udata *udata,
struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context(
udata, struct mlx5_ib_ucontext, ibucontext);
ucmdlen = udata->inlen < sizeof(ucmd) ?
(sizeof(ucmd) - sizeof(ucmd.flags)) : sizeof(ucmd);
ucmdlen = min(udata->inlen, sizeof(ucmd));
if (ucmdlen < offsetof(struct mlx5_ib_create_cq, flags))
return -EINVAL;
if (ib_copy_from_udata(&ucmd, udata, ucmdlen))
return -EFAULT;
if (ucmdlen == sizeof(ucmd) &&
(ucmd.flags & ~(MLX5_IB_CREATE_CQ_FLAGS_CQE_128B_PAD)))
if ((ucmd.flags & ~(MLX5_IB_CREATE_CQ_FLAGS_CQE_128B_PAD |
MLX5_IB_CREATE_CQ_FLAGS_UAR_PAGE_INDEX)))
return -EINVAL;
if (ucmd.cqe_size != 64 && ucmd.cqe_size != 128)
if ((ucmd.cqe_size != 64 && ucmd.cqe_size != 128) ||
ucmd.reserved0 || ucmd.reserved1)
return -EINVAL;
*cqe_size = ucmd.cqe_size;
@@ -739,7 +741,10 @@ static int create_cq_user(struct mlx5_ib_dev *dev, struct ib_udata *udata,
MLX5_SET(cqc, cqc, log_page_size,
page_shift - MLX5_ADAPTER_PAGE_SHIFT);
*index = context->bfregi.sys_pages[0];
if (ucmd.flags & MLX5_IB_CREATE_CQ_FLAGS_UAR_PAGE_INDEX)
*index = ucmd.uar_page_index;
else
*index = context->bfregi.sys_pages[0];
if (ucmd.cqe_comp_en == 1) {
int mini_cqe_format;