IB/uverbs: Extend uverbs_ioctl header with driver_id

Extending uverbs_ioctl header with driver_id and another reserved
field. driver_id should be used in order to identify the driver.
Since every driver could have its own parsing tree, this is necessary
for strace support.
Downstream patches take off the EXPERIMENTAL flag from the ioctl() IB
support and thus we add some reserved fields for future usage.

Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

18 files changed, 22 insertions, 4 deletions

diff --git a/drivers/infiniband/core/uverbs_ioctl.c b/drivers/infiniband/core/uverbs_ioctl.c
index 339b85145044..7016e729f139 100644
--- a/drivers/infiniband/core/uverbs_ioctl.c
+++ b/drivers/infiniband/core/uverbs_ioctl.c
@@ -246,6 +246,9 @@ static long ib_uverbs_cmd_verbs(struct ib_device *ib_dev,
 	size_t ctx_size;
 	uintptr_t data[UVERBS_OPTIMIZE_USING_STACK_SZ / sizeof(uintptr_t)];
 
+	if (hdr->driver_id != ib_dev->driver_id)
+		return -EINVAL;
+
 	object_spec = uverbs_get_object(ib_dev, hdr->object_id);
 	if (!object_spec)
 		return -EPROTONOSUPPORT;
@@ -350,7 +353,7 @@ long ib_uverbs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 			goto out;
 		}
 
-		if (hdr.reserved) {
+		if (hdr.reserved1 || hdr.reserved2) {
 			err = -EPROTONOSUPPORT;
 			goto out;
 		}
diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
index f6e361750466..abe0be8b5ddc 100644
--- a/drivers/infiniband/hw/bnxt_re/main.c
+++ b/drivers/infiniband/hw/bnxt_re/main.c
@@ -619,6 +619,7 @@ static int bnxt_re_register_ib(struct bnxt_re_dev *rdev)
 	ibdev->get_hw_stats             = bnxt_re_ib_get_hw_stats;
 	ibdev->alloc_hw_stats           = bnxt_re_ib_alloc_hw_stats;
 
+	ibdev->driver_id = RDMA_DRIVER_BNXT_RE;
 	return ib_register_device(ibdev, NULL);
 }
 
diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index a578ca559e11..1804b6c4a6ec 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -1439,6 +1439,7 @@ int iwch_register_device(struct iwch_dev *dev)
 	memcpy(dev->ibdev.iwcm->ifname, dev->rdev.t3cdev_p->lldev->name,
 	       sizeof(dev->ibdev.iwcm->ifname));
 
+	dev->ibdev.driver_id = RDMA_DRIVER_CXGB3;
 	ret = ib_register_device(&dev->ibdev, NULL);
 	if (ret)
 		goto bail1;
diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
index 42568a4df3f8..dc4eabd85f54 100644
--- a/drivers/infiniband/hw/cxgb4/provider.c
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -629,6 +629,7 @@ void c4iw_register_device(struct work_struct *work)
 	memcpy(dev->ibdev.iwcm->ifname, dev->rdev.lldi.ports[0]->name,
 	       sizeof(dev->ibdev.iwcm->ifname));
 
+	dev->ibdev.driver_id = RDMA_DRIVER_CXGB4;
 	ret = ib_register_device(&dev->ibdev, NULL);
 	if (ret)
 		goto err_kfree_iwcm;
diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c
index 471d55c50066..c8cf4d4984d3 100644
--- a/drivers/infiniband/hw/hfi1/verbs.c
+++ b/drivers/infiniband/hw/hfi1/verbs.c
@@ -1960,7 +1960,7 @@ int hfi1_register_ib_device(struct hfi1_devdata *dd)
 			      i,
 			      ppd->pkeys);
 
-	ret = rvt_register_device(&dd->verbs_dev.rdi);
+	ret = rvt_register_device(&dd->verbs_dev.rdi, RDMA_DRIVER_HFI1);
 	if (ret)
 		goto err_verbs_txreq;
 
diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index 6e48b1f507cf..83e21f696bbc 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -526,6 +526,7 @@ static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
 	/* OTHERS */
 	ib_dev->get_port_immutable	= hns_roce_port_immutable;
 
+	ib_dev->driver_id = RDMA_DRIVER_HNS;
 	ret = ib_register_device(ib_dev, NULL);
 	if (ret) {
 		dev_err(dev, "ib_register_device failed!\n");
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
index 60e004d2100e..40e4f5ab2b46 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
@@ -2927,6 +2927,7 @@ int i40iw_register_rdma_device(struct i40iw_device *iwdev)
 		return -ENOMEM;
 	iwibdev = iwdev->iwibdev;
 
+	iwibdev->ibdev.driver_id = RDMA_DRIVER_I40IW;
 	ret = ib_register_device(&iwibdev->ibdev, NULL);
 	if (ret)
 		goto error;
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index b9befda1eb27..d1be3231f4f0 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -2955,6 +2955,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
 	if (mlx4_ib_alloc_diag_counters(ibdev))
 		goto err_steer_free_bitmap;
 
+	ibdev->ib_dev.driver_id = RDMA_DRIVER_MLX4;
 	if (ib_register_device(&ibdev->ib_dev, NULL))
 		goto err_diag_counters;
 
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index d06aae9aa600..6b50711df786 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -4779,6 +4779,7 @@ int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev)
 	dev->ib_dev.uverbs_ex_cmd_mask |=
 			(1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
 			(1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
+	dev->ib_dev.driver_id = RDMA_DRIVER_MLX5;
 
 	err = init_node_data(dev);
 	if (err)
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
index 6fee7795d1c8..541f237965c7 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -1295,6 +1295,7 @@ int mthca_register_device(struct mthca_dev *dev)
 
 	mutex_init(&dev->cap_mask_mutex);
 
+	dev->ib_dev.driver_id = RDMA_DRIVER_MTHCA;
 	ret = ib_register_device(&dev->ib_dev, NULL);
 	if (ret)
 		return ret;
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index 162475aeeedd..1040a6e34230 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -3854,6 +3854,7 @@ int nes_register_ofa_device(struct nes_ib_device *nesibdev)
 	struct nes_adapter *nesadapter = nesdev->nesadapter;
 	int i, ret;
 
+	nesvnic->nesibdev->ibdev.driver_id = RDMA_DRIVER_NES;
 	ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
 	if (ret) {
 		return ret;
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
index 42dc0de54cb8..4547aa28d4ae 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
@@ -215,6 +215,7 @@ static int ocrdma_register_device(struct ocrdma_dev *dev)
 		dev->ibdev.destroy_srq = ocrdma_destroy_srq;
 		dev->ibdev.post_srq_recv = ocrdma_post_srq_recv;
 	}
+	dev->ibdev.driver_id = RDMA_DRIVER_OCRDMA;
 	return ib_register_device(&dev->ibdev, NULL);
 }
 
diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index db4bf97c0e15..f865c0991ad9 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -257,6 +257,7 @@ static int qedr_register_device(struct qedr_dev *dev)
 	dev->ibdev.get_link_layer = qedr_link_layer;
 	dev->ibdev.get_dev_fw_str = qedr_get_dev_fw_str;
 
+	dev->ibdev.driver_id = RDMA_DRIVER_QEDR;
 	return ib_register_device(&dev->ibdev, NULL);
 }
 
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index fabee760407e..3977abbc83ad 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -1646,7 +1646,7 @@ int qib_register_ib_device(struct qib_devdata *dd)
 			      dd->rcd[ctxt]->pkeys);
 	}
 
-	ret = rvt_register_device(&dd->verbs_dev.rdi);
+	ret = rvt_register_device(&dd->verbs_dev.rdi, RDMA_DRIVER_QIB);
 	if (ret)
 		goto err_tx;
 
diff --git a/drivers/infiniband/hw/usnic/usnic_ib_main.c b/drivers/infiniband/hw/usnic/usnic_ib_main.c
index f45e99a938e0..aed1ca390e30 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_main.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_main.c
@@ -433,6 +433,7 @@ static void *usnic_ib_device_add(struct pci_dev *dev)
 	us_ibdev->ib_dev.get_dev_fw_str     = usnic_get_dev_fw_str;
 
 
+	us_ibdev->ib_dev.driver_id = RDMA_DRIVER_USNIC;
 	if (ib_register_device(&us_ibdev->ib_dev, NULL))
 		goto err_fwd_dealloc;
 
diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c
index d650a9fcde24..4834460e2a0b 100644
--- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c
+++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c
@@ -276,6 +276,7 @@ static int pvrdma_register_device(struct pvrdma_dev *dev)
 		if (!dev->srq_tbl)
 			goto err_qp_free;
 	}
+	dev->ib_dev.driver_id = RDMA_DRIVER_VMW_PVRDMA;
 	spin_lock_init(&dev->srq_tbl_lock);
 
 	ret = ib_register_device(&dev->ib_dev, NULL);
diff --git a/drivers/infiniband/sw/rdmavt/vt.c b/drivers/infiniband/sw/rdmavt/vt.c
index a67b0ddc2230..434199d0bc96 100644
--- a/drivers/infiniband/sw/rdmavt/vt.c
+++ b/drivers/infiniband/sw/rdmavt/vt.c
@@ -730,7 +730,7 @@ static noinline int check_support(struct rvt_dev_info *rdi, int verb)
  *
  * Return: 0 on success otherwise an errno.
  */
-int rvt_register_device(struct rvt_dev_info *rdi)
+int rvt_register_device(struct rvt_dev_info *rdi, u32 driver_id)
 {
 	int ret = 0, i;
 
@@ -831,6 +831,7 @@ int rvt_register_device(struct rvt_dev_info *rdi)
 	rdi->ibdev.node_type = RDMA_NODE_IB_CA;
 	rdi->ibdev.num_comp_vectors = 1;
 
+	rdi->ibdev.driver_id = driver_id;
 	/* We are now good to announce we exist */
 	ret =  ib_register_device(&rdi->ibdev, rdi->driver_f.port_callback);
 	if (ret) {
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c
index ced79e49234b..5ef8c3333e43 100644
--- a/drivers/infiniband/sw/rxe/rxe_verbs.c
+++ b/drivers/infiniband/sw/rxe/rxe_verbs.c
@@ -1335,6 +1335,7 @@ int rxe_register_device(struct rxe_dev *rxe)
 	}
 	rxe->tfm = tfm;
 
+	dev->driver_id = RDMA_DRIVER_RXE;
 	err = ib_register_device(dev, NULL);
 	if (err) {
 		pr_warn("%s failed with error %d\n", __func__, err);