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RDMA/core: Check for verbs callbacks before using them 

Make sure the providers implement the verbs callbacks before calling
them, otherwise return -EOPNOTSUPP.

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Kamal Heib 2018-07-27 21:23:05 +03:00 committed by Jason Gunthorpe
parent 7150c3d554
commit 0584c47bbc
2 changed files with 5 additions and 1 deletions
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3
drivers/infiniband/core/uverbs_cmd.c
View File

@ -2504,7 +2504,8 @@ ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
goto out;
resp.bad_wr = 0;
ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
ret = srq->device->post_srq_recv ?
srq->device->post_srq_recv(srq, wr, &bad_wr) : -EOPNOTSUPP;
uobj_put_obj_read(srq);

3
drivers/infiniband/core/verbs.c
View File

@ -479,6 +479,9 @@ static struct ib_ah *_rdma_create_ah(struct ib_pd *pd,
{
struct ib_ah *ah;
if (!pd->device->create_ah)
return ERR_PTR(-EOPNOTSUPP);
ah = pd->device->create_ah(pd, ah_attr, udata);
if (!IS_ERR(ah)) {