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author | Luca Boccassi <luca.boccassi@gmail.com> | 2017-12-08 17:16:13 +0000 |
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committer | Luca Boccassi <luca.boccassi@gmail.com> | 2017-12-08 17:16:56 +0000 |
commit | 47d9763a1dd3103d732da9eec350cfc1cd784717 (patch) | |
tree | e44976be8d0ddfb4a054556d07b3b6036cf88e87 /drivers/net/virtio/virtqueue.c | |
parent | fdd2322bb45e83d3fd96b06ea32a4afbb60bcb6f (diff) |
New upstream version 16.11.4
Change-Id: I733e0292d2e060161d148b3e114065d00b36d2ba
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
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); + } +} |