RDMA: Allow fail of destroy CQ

Like any other verbs objects, CQ shouldn't fail during destroy, but
mlx5_ib didn't follow this contract with mixed IB verbs objects with
DEVX. Such mix causes to the situation where FW and kernel are fully
interdependent on the reference counting of each side.

Kernel verbs and drivers that don't have DEVX flows shouldn't fail.

Fixes: e39afe3d6d ("RDMA: Convert CQ allocations to be under core responsibility")
Link: https://lore.kernel.org/r/20200907120921.476363-7-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Leon Romanovsky
2020-09-07 15:09:18 +03:00
committed by Jason Gunthorpe
parent 7e3c66c9a9
commit 43d781b9fa
31 changed files with 66 additions and 37 deletions

View File

@@ -2423,7 +2423,7 @@ struct ib_device_ops {
int (*create_cq)(struct ib_cq *cq, const struct ib_cq_init_attr *attr,
struct ib_udata *udata);
int (*modify_cq)(struct ib_cq *cq, u16 cq_count, u16 cq_period);
void (*destroy_cq)(struct ib_cq *cq, struct ib_udata *udata);
int (*destroy_cq)(struct ib_cq *cq, struct ib_udata *udata);
int (*resize_cq)(struct ib_cq *cq, int cqe, struct ib_udata *udata);
struct ib_mr *(*get_dma_mr)(struct ib_pd *pd, int mr_access_flags);
struct ib_mr *(*reg_user_mr)(struct ib_pd *pd, u64 start, u64 length,
@@ -3890,7 +3890,9 @@ int ib_destroy_cq_user(struct ib_cq *cq, struct ib_udata *udata);
*/
static inline void ib_destroy_cq(struct ib_cq *cq)
{
ib_destroy_cq_user(cq, NULL);
int ret = ib_destroy_cq_user(cq, NULL);
WARN_ONCE(ret, "Destroy of kernel CQ shouldn't fail");
}
/**