1 files changed, 35 insertions, 5 deletions

diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 84a5e9a6d483..11c13c1381cf 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -51,6 +51,7 @@
 
 #include <rdma/ib.h>
 #include <rdma/uverbs_std_types.h>
+#include <rdma/rdma_netlink.h>
 
 #include "uverbs.h"
 #include "core_priv.h"
@@ -198,7 +199,7 @@ void ib_uverbs_release_file(struct kref *ref)
 	ib_dev = srcu_dereference(file->device->ib_dev,
 				  &file->device->disassociate_srcu);
 	if (ib_dev && !ib_dev->ops.disassociate_ucontext)
-		module_put(ib_dev->owner);
+		module_put(ib_dev->ops.owner);
 	srcu_read_unlock(&file->device->disassociate_srcu, srcu_key);
 
 	if (atomic_dec_and_test(&file->device->refcount))
@@ -1065,7 +1066,7 @@ static int ib_uverbs_open(struct inode *inode, struct file *filp)
 	module_dependent = !(ib_dev->ops.disassociate_ucontext);
 
 	if (module_dependent) {
-		if (!try_module_get(ib_dev->owner)) {
+		if (!try_module_get(ib_dev->ops.owner)) {
 			ret = -ENODEV;
 			goto err;
 		}
@@ -1100,7 +1101,7 @@ static int ib_uverbs_open(struct inode *inode, struct file *filp)
 	return stream_open(inode, filp);
 
 err_module:
-	module_put(ib_dev->owner);
+	module_put(ib_dev->ops.owner);
 
 err:
 	mutex_unlock(&dev->lists_mutex);
@@ -1148,12 +1149,41 @@ static const struct file_operations uverbs_mmap_fops = {
 	.compat_ioctl = ib_uverbs_ioctl,
 };
 
+static int ib_uverbs_get_nl_info(struct ib_device *ibdev, void *client_data,
+				 struct ib_client_nl_info *res)
+{
+	struct ib_uverbs_device *uverbs_dev = client_data;
+	int ret;
+
+	if (res->port != -1)
+		return -EINVAL;
+
+	res->abi = ibdev->ops.uverbs_abi_ver;
+	res->cdev = &uverbs_dev->dev;
+
+	/*
+	 * To support DRIVER_ID binding in userspace some of the driver need
+	 * upgrading to expose their PCI dependent revision information
+	 * through get_context instead of relying on modalias matching. When
+	 * the drivers are fixed they can drop this flag.
+	 */
+	if (!ibdev->ops.uverbs_no_driver_id_binding) {
+		ret = nla_put_u32(res->nl_msg, RDMA_NLDEV_ATTR_UVERBS_DRIVER_ID,
+				  ibdev->ops.driver_id);
+		if (ret)
+			return ret;
+	}
+	return 0;
+}
+
 static struct ib_client uverbs_client = {
 	.name   = "uverbs",
 	.no_kverbs_req = true,
 	.add    = ib_uverbs_add_one,
-	.remove = ib_uverbs_remove_one
+	.remove = ib_uverbs_remove_one,
+	.get_nl_info = ib_uverbs_get_nl_info,
 };
+MODULE_ALIAS_RDMA_CLIENT("uverbs");
 
 static ssize_t ibdev_show(struct device *device, struct device_attribute *attr,
 			  char *buf)
@@ -1186,7 +1216,7 @@ static ssize_t abi_version_show(struct device *device,
 	srcu_key = srcu_read_lock(&dev->disassociate_srcu);
 	ib_dev = srcu_dereference(dev->ib_dev, &dev->disassociate_srcu);
 	if (ib_dev)
-		ret = sprintf(buf, "%d\n", ib_dev->uverbs_abi_ver);
+		ret = sprintf(buf, "%u\n", ib_dev->ops.uverbs_abi_ver);
 	srcu_read_unlock(&dev->disassociate_srcu, srcu_key);
 
 	return ret;