[v2,1/2] vhost: support to clear in-flight packets for async dequeue
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Commit Message
rte_vhost_clear_queue_thread_unsafe() supports to clear
in-flight packets for async enqueue only. But after
supporting async dequeue, this API should support async dequeue too.
Signed-off-by: Yuan Wang <yuanx.wang@intel.com>
---
lib/vhost/virtio_net.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
@@ -27,6 +27,11 @@
#define VHOST_ASYNC_BATCH_THRESHOLD 32
+static __rte_always_inline uint16_t
+async_poll_dequeue_completed_split(struct virtio_net *dev,
+ struct vhost_virtqueue *vq, uint16_t queue_id,
+ struct rte_mbuf **pkts, uint16_t count, bool legacy_ol_flags);
+
static __rte_always_inline bool
rxvq_is_mergeable(struct virtio_net *dev)
{
@@ -2120,7 +2125,7 @@ rte_vhost_clear_queue_thread_unsafe(int vid, uint16_t queue_id,
return 0;
VHOST_LOG_DATA(DEBUG, "(%d) %s\n", dev->vid, __func__);
- if (unlikely(!is_valid_virt_queue_idx(queue_id, 0, dev->nr_vring))) {
+ if (unlikely(queue_id >= dev->nr_vring)) {
VHOST_LOG_DATA(ERR, "(%d) %s: invalid virtqueue idx %d.\n",
dev->vid, __func__, queue_id);
return 0;
@@ -2134,7 +2139,17 @@ rte_vhost_clear_queue_thread_unsafe(int vid, uint16_t queue_id,
return 0;
}
- n_pkts_cpl = vhost_poll_enqueue_completed(dev, queue_id, pkts, count);
+ if (queue_id % 2 == 0)
+ n_pkts_cpl = vhost_poll_enqueue_completed(dev, queue_id, pkts, count);
+ else {
+ if (unlikely(vq_is_packed(dev)))
+ VHOST_LOG_DATA(ERR,
+ "(%d) %s: async dequeue does not support packed ring.\n",
+ dev->vid, __func__);
+ else
+ n_pkts_cpl = async_poll_dequeue_completed_split(dev, vq, queue_id, pkts,
+ count, dev->flags & VIRTIO_DEV_LEGACY_OL_FLAGS);
+ }
return n_pkts_cpl;
}