diff options
| author | Yishai Hadas <yishaih@mellanox.com> | 2017-12-24 17:31:35 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2017-12-28 21:37:46 +0300 |
| commit | 4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0 (patch) | |
| tree | 1fa66369ee11cfd3ed87bb7dccf8e909830119e9 /drivers/infiniband/hw/mlx5/qp.c | |
| parent | 31a78a5a7983141c17852d31eb3a1f70d8161225 (diff) | |
| download | linux-4ed131d0bb1597ce12fff22d9d7fc9720a6e8cf0.tar.xz | |
IB/mlx5: Expose dynamic mmap allocation
This patch exposes the option to dynamic allocates a UAR, this
functionality will be used in downstream patch in this series as
part of QP creation.
Specifically, the user space driver asks for a UAR allocation in a given
page index, upon success this UAR and its bfregs can be used as part of
QP creation by the user space driver.
To enable allocating more than 256 UARs the page index is encoded in an
extra one byte just after the command byte.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/qp.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/qp.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 1acc445a93cd..ddf52dc4a78a 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -581,7 +581,7 @@ static int alloc_bfreg(struct mlx5_ib_dev *dev, return bfregn; } -static void free_bfreg(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi, int bfregn) +void mlx5_ib_free_bfreg(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi, int bfregn) { mutex_lock(&bfregi->lock); bfregi->count[bfregn]--; @@ -874,7 +874,7 @@ err_umem: ib_umem_release(ubuffer->umem); err_bfreg: - free_bfreg(dev, &context->bfregi, bfregn); + mlx5_ib_free_bfreg(dev, &context->bfregi, bfregn); return err; } @@ -887,7 +887,7 @@ static void destroy_qp_user(struct mlx5_ib_dev *dev, struct ib_pd *pd, mlx5_ib_db_unmap_user(context, &qp->db); if (base->ubuffer.umem) ib_umem_release(base->ubuffer.umem); - free_bfreg(dev, &context->bfregi, qp->bfregn); + mlx5_ib_free_bfreg(dev, &context->bfregi, qp->bfregn); } static int create_kernel_qp(struct mlx5_ib_dev *dev, |