| Message ID | 1356690724-37891-8-git-send-email-jasowang@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, Dec 28, 2012 at 06:31:59PM +0800, Jason Wang wrote: > Some device (such as virtio-net) needs the ability to destroy or re-order the > virtqueues, this patch adds a helper to do this. > > Signed-off-by: Jason Wang <jasowang> Actually del_queue unlike what the subject says :) > --- > hw/virtio.c | 9 +++++++++ > hw/virtio.h | 2 ++ > 2 files changed, 11 insertions(+), 0 deletions(-) > > diff --git a/hw/virtio.c b/hw/virtio.c > index f40a8c5..bc3c9c3 100644 > --- a/hw/virtio.c > +++ b/hw/virtio.c > @@ -700,6 +700,15 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size, > return &vdev->vq[i]; > } > > +void virtio_del_queue(VirtIODevice *vdev, int n) > +{ > + if (n < 0 || n >= VIRTIO_PCI_QUEUE_MAX) { > + abort(); > + } > + > + vdev->vq[n].vring.num = 0; > +} > + > void virtio_irq(VirtQueue *vq) > { > trace_virtio_irq(vq); > diff --git a/hw/virtio.h b/hw/virtio.h > index 7c17f7b..f6cb0f9 100644 > --- a/hw/virtio.h > +++ b/hw/virtio.h > @@ -138,6 +138,8 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size, > void (*handle_output)(VirtIODevice *, > VirtQueue *)); > > +void virtio_del_queue(VirtIODevice *vdev, int n); > + > void virtqueue_push(VirtQueue *vq, const VirtQueueElement *elem, > unsigned int len); > void virtqueue_flush(VirtQueue *vq, unsigned int count); > -- > 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 01/08/2013 03:14 PM, Michael S. Tsirkin wrote: > On Fri, Dec 28, 2012 at 06:31:59PM +0800, Jason Wang wrote: >> Some device (such as virtio-net) needs the ability to destroy or re-order the >> virtqueues, this patch adds a helper to do this. >> >> Signed-off-by: Jason Wang <jasowang> > Actually del_queue unlike what the subject says :) Oh, yes, will correct this. > >> --- >> hw/virtio.c | 9 +++++++++ >> hw/virtio.h | 2 ++ >> 2 files changed, 11 insertions(+), 0 deletions(-) >> >> diff --git a/hw/virtio.c b/hw/virtio.c >> index f40a8c5..bc3c9c3 100644 >> --- a/hw/virtio.c >> +++ b/hw/virtio.c >> @@ -700,6 +700,15 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size, >> return &vdev->vq[i]; >> } >> >> +void virtio_del_queue(VirtIODevice *vdev, int n) >> +{ >> + if (n < 0 || n >= VIRTIO_PCI_QUEUE_MAX) { >> + abort(); >> + } >> + >> + vdev->vq[n].vring.num = 0; >> +} >> + >> void virtio_irq(VirtQueue *vq) >> { >> trace_virtio_irq(vq); >> diff --git a/hw/virtio.h b/hw/virtio.h >> index 7c17f7b..f6cb0f9 100644 >> --- a/hw/virtio.h >> +++ b/hw/virtio.h >> @@ -138,6 +138,8 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size, >> void (*handle_output)(VirtIODevice *, >> VirtQueue *)); >> >> +void virtio_del_queue(VirtIODevice *vdev, int n); >> + >> void virtqueue_push(VirtQueue *vq, const VirtQueueElement *elem, >> unsigned int len); >> void virtqueue_flush(VirtQueue *vq, unsigned int count); >> -- >> 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/hw/virtio.c b/hw/virtio.c index f40a8c5..bc3c9c3 100644 --- a/hw/virtio.c +++ b/hw/virtio.c @@ -700,6 +700,15 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size, return &vdev->vq[i]; } +void virtio_del_queue(VirtIODevice *vdev, int n) +{ + if (n < 0 || n >= VIRTIO_PCI_QUEUE_MAX) { + abort(); + } + + vdev->vq[n].vring.num = 0; +} + void virtio_irq(VirtQueue *vq) { trace_virtio_irq(vq); diff --git a/hw/virtio.h b/hw/virtio.h index 7c17f7b..f6cb0f9 100644 --- a/hw/virtio.h +++ b/hw/virtio.h @@ -138,6 +138,8 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size, void (*handle_output)(VirtIODevice *, VirtQueue *)); +void virtio_del_queue(VirtIODevice *vdev, int n); + void virtqueue_push(VirtQueue *vq, const VirtQueueElement *elem, unsigned int len); void virtqueue_flush(VirtQueue *vq, unsigned int count);
Some device (such as virtio-net) needs the ability to destroy or re-order the virtqueues, this patch adds a helper to do this. Signed-off-by: Jason Wang <jasowang> --- hw/virtio.c | 9 +++++++++ hw/virtio.h | 2 ++ 2 files changed, 11 insertions(+), 0 deletions(-)