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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/ocrdma | |
| 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/ocrdma')
| -rw-r--r-- | drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 5 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ocrdma/ocrdma_verbs.h | 2 |
2 files changed, 4 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index c1751c9a0f62..a9d2f7a40b51 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -664,7 +664,7 @@ exit: return status; } -void ocrdma_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) +int ocrdma_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) { struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); @@ -682,10 +682,11 @@ void ocrdma_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) if (is_ucontext_pd(uctx, pd)) { ocrdma_release_ucontext_pd(uctx); - return; + return 0; } } _ocrdma_dealloc_pd(dev, pd); + return 0; } static int ocrdma_alloc_lkey(struct ocrdma_dev *dev, struct ocrdma_mr *mr, diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h index df8e3b923a44..4c85be43507c 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h @@ -67,7 +67,7 @@ void ocrdma_dealloc_ucontext(struct ib_ucontext *uctx); int ocrdma_mmap(struct ib_ucontext *, struct vm_area_struct *vma); int ocrdma_alloc_pd(struct ib_pd *pd, struct ib_udata *udata); -void ocrdma_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata); +int ocrdma_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata); int ocrdma_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, struct ib_udata *udata); |