RDMA: Check flags during create_cq
Each driver should check that the CQ attrs is supported. Unfortuantely
when flags was added to the CQ attrs the drivers were not updated,
uverbs_ex_cmd_mask was used to block it. This was missed when create CQ
was converted to ioctl, so non-zero flags could have been passed into
drivers.
Check that flags is zero in all drivers that don't use it, remove
IB_USER_VERBS_EX_CMD_CREATE_CQ from uverbs_ex_cmd_mask.
Fixes: 41b2a71fc848 ("IB/uverbs: Move ioctl path of create_cq and destroy_cq to a new file")
Link: https://lore.kernel.org/r/7-v1-caa70ba3d1ab+1436e-ucmd_mask_jgg@nvidia.com
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
diff --git a/drivers/infiniband/sw/siw/siw_verbs.c b/drivers/infiniband/sw/siw/siw_verbs.c
index 947b8b1..bcea5c5 100644
--- a/drivers/infiniband/sw/siw/siw_verbs.c
+++ b/drivers/infiniband/sw/siw/siw_verbs.c
@@ -1097,6 +1097,9 @@ int siw_create_cq(struct ib_cq *base_cq, const struct ib_cq_init_attr *attr,
struct siw_cq *cq = to_siw_cq(base_cq);
int rv, size = attr->cqe;
+ if (attr->flags)
+ return -EOPNOTSUPP;
+
if (atomic_inc_return(&sdev->num_cq) > SIW_MAX_CQ) {
siw_dbg(base_cq->device, "too many CQ's\n");
rv = -ENOMEM;