diff options
Diffstat (limited to 'drivers/net/virtio/virtqueue.c')
| -rw-r--r-- | drivers/net/virtio/virtqueue.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/net/virtio/virtqueue.c b/drivers/net/virtio/virtqueue.c index 7f60e3ef..4f8707ae 100644 --- a/drivers/net/virtio/virtqueue.c +++ b/drivers/net/virtio/virtqueue.c @@ -70,3 +70,28 @@ virtqueue_detatch_unused(struct virtqueue *vq) } return NULL; } + +/* Flush the elements in the used ring. */ +void +virtqueue_flush(struct virtqueue *vq) +{ + struct vring_used_elem *uep; + struct vq_desc_extra *dxp; + uint16_t used_idx, desc_idx; + uint16_t nb_used, i; + + nb_used = VIRTQUEUE_NUSED(vq); + + for (i = 0; i < nb_used; i++) { + used_idx = vq->vq_used_cons_idx & (vq->vq_nentries - 1); + uep = &vq->vq_ring.used->ring[used_idx]; + desc_idx = (uint16_t)uep->id; + dxp = &vq->vq_descx[desc_idx]; + if (dxp->cookie != NULL) { + rte_pktmbuf_free(dxp->cookie); + dxp->cookie = NULL; + } + vq->vq_used_cons_idx++; + vq_ring_free_chain(vq, desc_idx); + } +} |