[RESEND V2 3/6] tcmu: refactor rm_device cmd with new nl helpers

[Zhu Lingshan]

use new netlink events helpers tcmu_netlink_init() and
tcmu_netlink_send() to refactor netlink event
TCMU_CMD_REMOVED_DEVICE

Signed-off-by: Zhu Lingshan <ls...@suse.com>
---
Changes in V2:
  - return tcmu_netlink_event_send() directly, instead of a ret value.

 drivers/target/target_core_user.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/target/target_core_user.c 
b/drivers/target/target_core_user.c
index 52d0e868a192..24e1f0b3662e 100644
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -1727,6 +1727,20 @@ static int tcmu_send_dev_add_event(struct tcmu_dev *udev)
 
 }
 
+static int tcmu_send_dev_remove_event(struct tcmu_dev *udev)
+{
+       struct sk_buff *skb = NULL;
+       void *msg_header = NULL;
+       int ret = 0;
+
+       ret = tcmu_netlink_event_init(udev, TCMU_CMD_REMOVED_DEVICE,
+                                     &skb, &msg_header);
+       if (ret < 0)
+               return ret;
+       return tcmu_netlink_event_send(udev, TCMU_CMD_REMOVED_DEVICE,
+                                      &skb, &msg_header);
+}
+
 static int tcmu_update_uio_info(struct tcmu_dev *udev)
 {
        struct tcmu_hba *hba = udev->hba->hba_ptr;
@@ -1886,7 +1900,7 @@ static void tcmu_destroy_device(struct se_device *dev)
        list_del(&udev->node);
        mutex_unlock(&root_udev_mutex);
 
-       tcmu_netlink_event(udev, TCMU_CMD_REMOVED_DEVICE, 0, NULL);
+       tcmu_send_dev_remove_event(udev);
 
        uio_unregister_device(&udev->uio_info);
 
-- 
2.14.3