diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2017-02-07 06:15:13 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-05-02 23:41:43 +0300 |
| commit | 5a08b04f637921e44ba767c07c74b0535504ab71 (patch) | |
| tree | 41123464f2875505de9989115a1104ceb974d589 /include/linux/virtio.h | |
| parent | 0a12ae4024a5167c30444d722b0cbafbdb5f4b57 (diff) | |
virtio: allow extra context per descriptor
Allow extra context per descriptor. To avoid slow down for data path,
this disables use of indirect descriptors for this vq.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/linux/virtio.h')
| -rw-r--r-- | include/linux/virtio.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/virtio.h b/include/linux/virtio.h index 7edfbdb55a99..ed04753278d4 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -44,6 +44,12 @@ int virtqueue_add_inbuf(struct virtqueue *vq, void *data, gfp_t gfp); +int virtqueue_add_inbuf_ctx(struct virtqueue *vq, + struct scatterlist sg[], unsigned int num, + void *data, + void *ctx, + gfp_t gfp); + int virtqueue_add_sgs(struct virtqueue *vq, struct scatterlist *sgs[], unsigned int out_sgs, @@ -59,6 +65,9 @@ bool virtqueue_notify(struct virtqueue *vq); void *virtqueue_get_buf(struct virtqueue *vq, unsigned int *len); +void *virtqueue_get_buf_ctx(struct virtqueue *vq, unsigned int *len, + void **ctx); + void virtqueue_disable_cb(struct virtqueue *vq); bool virtqueue_enable_cb(struct virtqueue *vq); |