hisi_acc_vfio_pci: extract public functions for container_of

In the current driver, vdev is obtained from struct
hisi_acc_vf_core_device through the container_of function.
This method is used in many places in the driver. In order to
reduce this repetitive operation, It was extracted into
a public function.

Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Reviewed-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Link: https://lore.kernel.org/r/20241112073322.54550-2-liulongfang@huawei.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

diff --git a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c
index 0d632ba..299766a 100644 (file)
--- a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c
+++ b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c
@@ -630,6 +630,12 @@ static void hisi_acc_vf_disable_fds(struct hisi_acc_vf_core_device *hisi_acc_vde
        }
 }
 
+static struct hisi_acc_vf_core_device *hisi_acc_get_vf_dev(struct vfio_device *vdev)
+{
+       return container_of(vdev, struct hisi_acc_vf_core_device,
+                           core_device.vdev);
+}
+
 static void hisi_acc_vf_reset(struct hisi_acc_vf_core_device *hisi_acc_vdev)
 {
        hisi_acc_vdev->vf_qm_state = QM_NOT_READY;
@@ -1031,8 +1037,7 @@ static struct file *
 hisi_acc_vfio_pci_set_device_state(struct vfio_device *vdev,
                                   enum vfio_device_mig_state new_state)
 {
-       struct hisi_acc_vf_core_device *hisi_acc_vdev = container_of(vdev,
-                       struct hisi_acc_vf_core_device, core_device.vdev);
+       struct hisi_acc_vf_core_device *hisi_acc_vdev = hisi_acc_get_vf_dev(vdev);
        enum vfio_device_mig_state next_state;
        struct file *res = NULL;
        int ret;
@@ -1073,8 +1078,7 @@ static int
 hisi_acc_vfio_pci_get_device_state(struct vfio_device *vdev,
                                   enum vfio_device_mig_state *curr_state)
 {
-       struct hisi_acc_vf_core_device *hisi_acc_vdev = container_of(vdev,
-                       struct hisi_acc_vf_core_device, core_device.vdev);
+       struct hisi_acc_vf_core_device *hisi_acc_vdev = hisi_acc_get_vf_dev(vdev);
 
        mutex_lock(&hisi_acc_vdev->state_mutex);
        *curr_state = hisi_acc_vdev->mig_state;
@@ -1278,8 +1282,7 @@ static long hisi_acc_vfio_pci_ioctl(struct vfio_device *core_vdev, unsigned int
 
 static int hisi_acc_vfio_pci_open_device(struct vfio_device *core_vdev)
 {
-       struct hisi_acc_vf_core_device *hisi_acc_vdev = container_of(core_vdev,
-                       struct hisi_acc_vf_core_device, core_device.vdev);
+       struct hisi_acc_vf_core_device *hisi_acc_vdev = hisi_acc_get_vf_dev(core_vdev);
        struct vfio_pci_core_device *vdev = &hisi_acc_vdev->core_device;
        int ret;
 
@@ -1302,8 +1305,7 @@ static int hisi_acc_vfio_pci_open_device(struct vfio_device *core_vdev)
 
 static void hisi_acc_vfio_pci_close_device(struct vfio_device *core_vdev)
 {
-       struct hisi_acc_vf_core_device *hisi_acc_vdev = container_of(core_vdev,
-                       struct hisi_acc_vf_core_device, core_device.vdev);
+       struct hisi_acc_vf_core_device *hisi_acc_vdev = hisi_acc_get_vf_dev(core_vdev);
        struct hisi_qm *vf_qm = &hisi_acc_vdev->vf_qm;
 
        iounmap(vf_qm->io_base);
@@ -1318,8 +1320,7 @@ static const struct vfio_migration_ops hisi_acc_vfio_pci_migrn_state_ops = {
 
 static int hisi_acc_vfio_pci_migrn_init_dev(struct vfio_device *core_vdev)
 {
-       struct hisi_acc_vf_core_device *hisi_acc_vdev = container_of(core_vdev,
-                       struct hisi_acc_vf_core_device, core_device.vdev);
+       struct hisi_acc_vf_core_device *hisi_acc_vdev = hisi_acc_get_vf_dev(core_vdev);
        struct pci_dev *pdev = to_pci_dev(core_vdev->dev);
        struct hisi_qm *pf_qm = hisi_acc_get_pf_qm(pdev);