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virtio: record the maximum queue num supported by the device.

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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>
This commit is contained in:
Xuan Zhuo
2022-08-01 14:38:21 +08:00
committed by Michael S. Tsirkin
parent 0b6fd46ec5
commit da80296183
9 changed files with 18 additions and 0 deletions
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2
drivers/virtio/virtio_vdpa.c
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@@ -183,6 +183,8 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index,
goto error_new_virtqueue;
}
vq->num_max = max_num;
/* Setup virtqueue callback */
cb.callback = callback ? virtio_vdpa_virtqueue_cb : NULL;
cb.private = info;