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| author |   Leon Romanovsky <leonro@mellanox.com> | 2020-09-07 15:09:13 +0300 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2020-09-09 13:57:22 -0300 |
| commit | 91a7c58fce065506fd98954d27694e5d83c96638 (patch) | |
| tree | a2e06921077e53db3b9678d44398183a063ca038 /drivers/infiniband/hw/qedr | |
| parent | RDMA/rtrs-srv: Incorporate ib_register_client into rtrs server init (diff) | |
| download | linux-dev-91a7c58fce065506fd98954d27694e5d83c96638.tar.xz linux-dev-91a7c58fce065506fd98954d27694e5d83c96638.zip | |
RDMA: Restore ability to fail on PD deallocate
The IB verbs objects are counted by the kernel and ib_core ensures that
deallocate PD will success so it will be called once all other objects
that depends on PD will be released. This is achieved by managing various
reference counters on such objects.
The mlx5 driver didn't follow this standard flow when allowed DEVX objects
that are not managed by ib_core to be interleaved with the ones under
ib_core responsibility.
In such interleaved scenarios deallocate command can fail and ib_core will
leave uobject in internal DB and attempt to clean it later to free
resources anyway.
This change partially restores returned value from dealloc_pd() for all
drivers, but keeping in mind that non-DEVX devices and kernel verbs paths
shouldn't fail.
Fixes: 21a428a019c9 ("RDMA: Handle PD allocations by IB/core")
Link: https://lore.kernel.org/r/20200907120921.476363-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/qedr')
| -rw-r--r-- | drivers/infiniband/hw/qedr/verbs.c | 3 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qedr/verbs.h | 2 |
2 files changed, 3 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c index 0bdfa300865d..c81d1e547295 100644 --- a/drivers/infiniband/hw/qedr/verbs.c +++ b/drivers/infiniband/hw/qedr/verbs.c @@ -471,13 +471,14 @@ int qedr_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) return 0; } -void qedr_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) +int qedr_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) { struct qedr_dev *dev = get_qedr_dev(ibpd->device); struct qedr_pd *pd = get_qedr_pd(ibpd); DP_DEBUG(dev, QEDR_MSG_INIT, "Deallocating PD %d\n", pd->pd_id); dev->ops->rdma_dealloc_pd(dev->rdma_ctx, pd->pd_id); + return 0; } static void qedr_free_pbl(struct qedr_dev *dev, diff --git a/drivers/infiniband/hw/qedr/verbs.h b/drivers/infiniband/hw/qedr/verbs.h index 39dd6286ba39..1b450919ba9c 100644 --- a/drivers/infiniband/hw/qedr/verbs.h +++ b/drivers/infiniband/hw/qedr/verbs.h @@ -47,7 +47,7 @@ void qedr_dealloc_ucontext(struct ib_ucontext *uctx); int qedr_mmap(struct ib_ucontext *ucontext, struct vm_area_struct *vma); void qedr_mmap_free(struct rdma_user_mmap_entry *rdma_entry); int qedr_alloc_pd(struct ib_pd *pd, struct ib_udata *udata); -void qedr_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata); +int qedr_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata); int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, struct ib_udata *udata); |