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>

16 files changed, 28 insertions, 8 deletions

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index 6d2603571771..64129646f6a6 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -632,6 +632,7 @@ struct ib_device *_ib_alloc_device(size_t size)
 		BIT_ULL(IB_USER_VERBS_CMD_RESIZE_CQ);
 
 	device->uverbs_ex_cmd_mask =
+		BIT_ULL(IB_USER_VERBS_EX_CMD_CREATE_CQ) |
 		BIT_ULL(IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
 		BIT_ULL(IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) |
 		BIT_ULL(IB_USER_VERBS_EX_CMD_CREATE_WQ) |
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index f3ec6d3fba62..edc47093c63b 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -2831,6 +2831,9 @@ int bnxt_re_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 	struct bnxt_qplib_nq *nq = NULL;
 	unsigned int nq_alloc_cnt;
 
+	if (attr->flags)
+		return -EOPNOTSUPP;
+
 	/* Validate CQ fields */
 	if (cqe < 1 || cqe > dev_attr->max_cq_wqes) {
 		ibdev_err(&rdev->ibdev, "Failed to create CQ -max exceeded");
diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
index 28349ed50885..2cb65be24770 100644
--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/drivers/infiniband/hw/cxgb4/cq.c
@@ -1006,7 +1006,7 @@ int c4iw_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 
 	pr_debug("ib_dev %p entries %d\n", ibdev, entries);
 	if (attr->flags)
-		return -EINVAL;
+		return -EOPNOTSUPP;
 
 	if (vector >= rhp->rdev.lldi.nciq)
 		return -EINVAL;
diff --git a/drivers/infiniband/hw/efa/efa_verbs.c b/drivers/infiniband/hw/efa/efa_verbs.c
index e3d9a5a5f4d9..2fe5708b2d9d 100644
--- a/drivers/infiniband/hw/efa/efa_verbs.c
+++ b/drivers/infiniband/hw/efa/efa_verbs.c
@@ -1032,6 +1032,9 @@ int efa_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 
 	ibdev_dbg(ibdev, "create_cq entries %d\n", entries);
 
+	if (attr->flags)
+		return -EOPNOTSUPP;
+
 	if (entries < 1 || entries > dev->dev_attr.max_cq_depth) {
 		ibdev_dbg(ibdev,
 			  "cq: requested entries[%u] non-positive or greater than max[%u]\n",
diff --git a/drivers/infiniband/hw/hns/hns_roce_cq.c b/drivers/infiniband/hw/hns/hns_roce_cq.c
index 809b22aa5056..68f355fba425 100644
--- a/drivers/infiniband/hw/hns/hns_roce_cq.c
+++ b/drivers/infiniband/hw/hns/hns_roce_cq.c
@@ -251,6 +251,9 @@ int hns_roce_create_cq(struct ib_cq *ib_cq, const struct ib_cq_init_attr *attr,
 	u32 cq_entries = attr->cqe;
 	int ret;
 
+	if (attr->flags)
+		return -EOPNOTSUPP;
+
 	if (cq_entries < 1 || cq_entries > hr_dev->caps.max_cqes) {
 		ibdev_err(ibdev, "Failed to check CQ count %d max=%d\n",
 			  cq_entries, hr_dev->caps.max_cqes);
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
index acc5e945d303..f3eb60ba078d 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
@@ -1107,6 +1107,9 @@ static int i40iw_create_cq(struct ib_cq *ibcq,
 	int err_code;
 	int entries = attr->cqe;
 
+	if (attr->flags)
+		return -EOPNOTSUPP;
+
 	if (iwdev->closing)
 		return -ENODEV;
 
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 355c8268d195..c2c66b958b83 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -2659,7 +2659,6 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
 
 	ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_ops);
 	ibdev->ib_dev.uverbs_ex_cmd_mask |=
-		(1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
 		(1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
 
 	if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) &&
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index b9a12a1d1c5c..261cc669aaf1 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -4143,7 +4143,6 @@ static int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev)
 		(1ull << IB_USER_VERBS_CMD_CREATE_AH)		|
 		(1ull << IB_USER_VERBS_CMD_DESTROY_AH);
 	dev->ib_dev.uverbs_ex_cmd_mask |=
-		(1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ)	|
 		(1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
 
 	if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) &&
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
index ea4a8deabfb6..e37c965bb030 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -612,7 +612,7 @@ static int mthca_create_cq(struct ib_cq *ibcq,
 		udata, struct mthca_ucontext, ibucontext);
 
 	if (attr->flags)
-		return -EINVAL;
+		return -EOPNOTSUPP;
 
 	if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
 		return -EINVAL;
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index 244dd22d53ef..29ec0a808a19 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -974,7 +974,7 @@ int ocrdma_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 	struct ocrdma_create_cq_ureq ureq;
 
 	if (attr->flags)
-		return -EINVAL;
+		return -EOPNOTSUPP;
 
 	if (udata) {
 		if (ib_copy_from_udata(&ureq, udata, sizeof(ureq)))
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index 34c07a18c2c2..80373170ce51 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -928,6 +928,9 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 		 "create_cq: called from %s. entries=%d, vector=%d\n",
 		 udata ? "User Lib" : "Kernel", entries, vector);
 
+	if (attr->flags)
+		return -EOPNOTSUPP;
+
 	if (entries > QEDR_MAX_CQES) {
 		DP_ERR(dev,
 		       "create cq: the number of entries %d is too high. Must be equal or below %d.\n",
diff --git a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
index a89d5816685a..d6708d1db73a 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
@@ -584,7 +584,7 @@ int usnic_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 		       struct ib_udata *udata)
 {
 	if (attr->flags)
-		return -EINVAL;
+		return -EOPNOTSUPP;
 
 	return 0;
 }
diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c
index 319546a39a0d..a119ac3e103c 100644
--- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c
+++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c
@@ -119,6 +119,9 @@ int pvrdma_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 
 	BUILD_BUG_ON(sizeof(struct pvrdma_cqe) != 64);
 
+	if (attr->flags)
+		return -EOPNOTSUPP;
+
 	entries = roundup_pow_of_two(entries);
 	if (entries < 1 || entries > dev->dsr->caps.max_cqe)
 		return -EINVAL;
diff --git a/drivers/infiniband/sw/rdmavt/cq.c b/drivers/infiniband/sw/rdmavt/cq.c
index 19248be14093..20cc0799ac4b 100644
--- a/drivers/infiniband/sw/rdmavt/cq.c
+++ b/drivers/infiniband/sw/rdmavt/cq.c
@@ -211,7 +211,7 @@ int rvt_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 	int err;
 
 	if (attr->flags)
-		return -EINVAL;
+		return -EOPNOTSUPP;
 
 	if (entries < 1 || entries > rdi->dparms.props.max_cqe)
 		return -EINVAL;
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c
index dafcc0329148..7d32cb246d9e 100644
--- a/drivers/infiniband/sw/rxe/rxe_verbs.c
+++ b/drivers/infiniband/sw/rxe/rxe_verbs.c
@@ -771,7 +771,7 @@ static int rxe_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 	}
 
 	if (attr->flags)
-		return -EINVAL;
+		return -EOPNOTSUPP;
 
 	err = rxe_cq_chk_attr(rxe, NULL, attr->cqe, attr->comp_vector);
 	if (err)
diff --git a/drivers/infiniband/sw/siw/siw_verbs.c b/drivers/infiniband/sw/siw/siw_verbs.c
index 947b8b1cbe9a..bcea5c5ace2b 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;