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| author |   Yishai Hadas <yishaih@mellanox.com> | 2020-03-24 08:01:40 +0200 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2020-03-27 12:59:04 -0300 |
| commit | 64d99f6a62b98532886ede9913a026b2e2bc0419 (patch) | |
| tree | 7c2677ee2dc67c91c06dd1c76547d946a1ddebf0 /drivers/infiniband/hw/mlx5/cq.c | |
| parent | IB/mlx5: Expose UAR object and its alloc/destroy commands (diff) | |
| download | linux-dev-64d99f6a62b98532886ede9913a026b2e2bc0419.tar.xz linux-dev-64d99f6a62b98532886ede9913a026b2e2bc0419.zip | |
IB/mlx5: Extend CQ creation to get uar page index from user space
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>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/cq.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/cq.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c index 367a71bc5f4b..1d184bd5c759 100644 --- a/drivers/infiniband/hw/mlx5/cq.c +++ b/drivers/infiniband/hw/mlx5/cq.c @@ -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; |