diff options
| 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/bnxt_re | |
| 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/bnxt_re')
| -rw-r--r-- | drivers/infiniband/hw/bnxt_re/ib_verbs.c | 3 | ||||
| -rw-r--r-- | drivers/infiniband/hw/bnxt_re/ib_verbs.h | 2 |
2 files changed, 3 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c index 5ee272d27aaa..c53f6e329d84 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -532,7 +532,7 @@ fail: } /* Protection Domains */ -void bnxt_re_dealloc_pd(struct ib_pd *ib_pd, struct ib_udata *udata) +int bnxt_re_dealloc_pd(struct ib_pd *ib_pd, struct ib_udata *udata) { struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); struct bnxt_re_dev *rdev = pd->rdev; @@ -542,6 +542,7 @@ void bnxt_re_dealloc_pd(struct ib_pd *ib_pd, struct ib_udata *udata) if (pd->qplib_pd.id) bnxt_qplib_dealloc_pd(&rdev->qplib_res, &rdev->qplib_res.pd_tbl, &pd->qplib_pd); + return 0; } int bnxt_re_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.h b/drivers/infiniband/hw/bnxt_re/ib_verbs.h index 1daeb30e06fd..d9e2e406f66a 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.h +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.h @@ -163,7 +163,7 @@ int bnxt_re_query_gid(struct ib_device *ibdev, u8 port_num, enum rdma_link_layer bnxt_re_get_link_layer(struct ib_device *ibdev, u8 port_num); int bnxt_re_alloc_pd(struct ib_pd *pd, struct ib_udata *udata); -void bnxt_re_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata); +int bnxt_re_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata); int bnxt_re_create_ah(struct ib_ah *ah, struct rdma_ah_init_attr *init_attr, struct ib_udata *udata); int bnxt_re_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |