qemu/include/hw/virtio
Wei Wang 9b02e1618c virtio-net: enable configurable tx queue size
This patch enables the virtio-net tx queue size to be configurable
between 256 (the default queue size) and 1024 by the user when the
vhost-user backend is used.

Currently, the maximum tx queue size for other backends is 512 due
to the following limitations:
- QEMU backend: the QEMU backend implementation in some cases may
send 1024+1 iovs to writev.
- Vhost_net backend: there are possibilities that the guest sends
a vring_desc of memory which crosses a MemoryRegion thereby
generating more than 1024 iovs after translation from guest-physical
address in the backend.

Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-07-03 22:29:48 +03:00
..
vhost-backend.h vhost: rework IOTLB messaging 2017-06-02 18:57:17 +03:00
vhost-scsi-common.h vhost-scsi: create a vhost-scsi-common abstraction 2017-05-05 12:10:00 +02:00
vhost-scsi.h vhost-scsi: create a vhost-scsi-common abstraction 2017-05-05 12:10:00 +02:00
vhost-user-scsi.h vhost-user-scsi: Introduce vhost-user-scsi host device 2017-06-15 11:18:40 +02:00
vhost-vsock.h
vhost.h vhost: propagate errors in vhost_device_iotlb_miss() 2017-06-02 18:57:17 +03:00
virtio-access.h
virtio-balloon.h
virtio-blk.h
virtio-bus.h
virtio-crypto.h
virtio-gpu.h virtio-gpu: move virtio_gpu_gl_block 2017-05-12 12:02:48 +02:00
virtio-input.h
virtio-net.h virtio-net: enable configurable tx queue size 2017-07-03 22:29:48 +03:00
virtio-rng.h
virtio-scsi.h vhost-user-scsi: Introduce vhost-user-scsi host device 2017-06-15 11:18:40 +02:00
virtio-serial.h
virtio.h virtio_net: Bypass backends for MTU feature negotiation 2017-05-25 21:25:28 +03:00