[PATCH V2 3/3] vDPA/ifcvf: get_config_size should return dev specific config size
From: Zhu Lingshan <hidden>
Date: 2021-04-15 09:59:15
Also in:
kvm, lkml
Subsystem:
intel virtio data path accelerator, the rest, virtio core · Maintainers:
Zhu Lingshan, Linus Torvalds, "Michael S. Tsirkin", Jason Wang
get_config_size() should return the size based on the decected device type. Signed-off-by: Zhu Lingshan <redacted> --- drivers/vdpa/ifcvf/ifcvf_main.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c
index cea1313b1a3f..6844c49fe1de 100644
--- a/drivers/vdpa/ifcvf/ifcvf_main.c
+++ b/drivers/vdpa/ifcvf/ifcvf_main.c@@ -347,7 +347,23 @@ 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; + + if (vf->dev_type == VIRTIO_ID_NET) + size = sizeof(struct virtio_net_config); + + else if (vf->dev_type == VIRTIO_ID_BLOCK) + size = sizeof(struct virtio_blk_config); + + else { + 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,
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2.27.0