diff options
author | Xuan Zhuo <xuanzhuo@linux.alibaba.com> | 2022-08-01 09:38:21 +0300 |
---|---|---|
committer | Michael S. Tsirkin <mst@redhat.com> | 2022-08-11 11:06:38 +0300 |
commit | da802961832f9852886304290135457519815497 (patch) | |
tree | 15d1e1ab7b0387b95bfc5931a98f3ff12e77f9fc /drivers/virtio/virtio_pci_legacy.c | |
parent | 0b6fd46ec5f5720b76cbb01300ed9f7b7c6365c4 (diff) | |
download | linux-da802961832f9852886304290135457519815497.tar.xz |
virtio: record the maximum queue num supported by the device.
virtio-net can display the maximum (supported by hardware) ring size in
ethtool -g eth0.
When the subsequent patch implements vring reset, it can judge whether
the ring size passed by the driver is legal based on this.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220801063902.129329-2-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/virtio/virtio_pci_legacy.c')
-rw-r--r-- | drivers/virtio/virtio_pci_legacy.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_pci_legacy.c b/drivers/virtio/virtio_pci_legacy.c index a5e5721145c7..2257f1b3d8ae 100644 --- a/drivers/virtio/virtio_pci_legacy.c +++ b/drivers/virtio/virtio_pci_legacy.c @@ -135,6 +135,8 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev, if (!vq) return ERR_PTR(-ENOMEM); + vq->num_max = num; + q_pfn = virtqueue_get_desc_addr(vq) >> VIRTIO_PCI_QUEUE_ADDR_SHIFT; if (q_pfn >> 32) { dev_err(&vp_dev->pci_dev->dev, |