Re: [PATCH V3 3/3] vDPA/ifcvf: get_config_size should return dev specific config size

[Jason Wang]

在 2021/4/16 下午3:16, Zhu Lingshan 写道:

get_config_size() should return the size based on the decected
device type.

Signed-off-by: Zhu Lingshan <lingshan....@intel.com>

Acked-by: Jason Wang <jasow...@redhat.com>

---
  drivers/vdpa/ifcvf/ifcvf_main.c | 19 ++++++++++++++++++-
  1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c
index 376b2014916a..3b6f7862dbb8 100644
--- a/drivers/vdpa/ifcvf/ifcvf_main.c
+++ b/drivers/vdpa/ifcvf/ifcvf_main.c
@@ -356,7 +356,24 @@ static u32 ifcvf_vdpa_get_vq_align(struct vdpa_device 
*vdpa_dev)

static size_t ifcvf_vdpa_get_config_size(struct vdpa_device *vdpa_dev)

  {
-       return sizeof(struct virtio_net_config);
+       struct ifcvf_adapter *adapter = vdpa_to_adapter(vdpa_dev);
+       struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
+       struct pci_dev *pdev = adapter->pdev;
+       size_t size;
+
+       switch (vf->dev_type) {
+       case VIRTIO_ID_NET:
+               size = sizeof(struct virtio_net_config);
+               break;
+       case VIRTIO_ID_BLOCK:
+               size = sizeof(struct virtio_blk_config);
+               break;
+       default:
+               size = 0;
+               IFCVF_ERR(pdev, "VIRTIO ID %u not supported\n", vf->dev_type);
+       }
+
+       return size;
  }

static void ifcvf_vdpa_get_config(struct vdpa_device *vdpa_dev,