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vhost-dpdk: dequeue size fix

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Burst size for DPDK is 32, which is different from VLIB_FRAME_SIZE.
A loop is needed to dequeue all packets.

Change-Id: Ie611c58c4e3434251a47fe6ad1f38abcb85180cb
Signed-off-by: Zhihong Wang <zhihong.wang@intel.com>
This commit is contained in:
Zhihong Wang
2016-06-21 20:33:59 -04:00
committed by Damjan Marion
parent 07515d7aae
commit 692581faf8
1 changed files with 12 additions and 4 deletions
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16
vnet/vnet/devices/dpdk/dpdk_priv.h
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@ -92,12 +92,20 @@ dpdk_rx_burst ( dpdk_main_t * dm, dpdk_device_t * xd, u16 queue_id)
return 0;
#endif
n_buffers = rte_vhost_dequeue_burst(&xd->vu_vhost_dev, offset + VIRTIO_TXQ,
bm->pktmbuf_pools[socket_id],
xd->rx_vectors[queue_id], VLIB_FRAME_SIZE);
struct rte_mbuf **pkts = xd->rx_vectors[queue_id];
while (n_left) {
n_this_chunk = rte_vhost_dequeue_burst(&xd->vu_vhost_dev,
offset + VIRTIO_TXQ,
bm->pktmbuf_pools[socket_id],
pkts + n_buffers,
n_left);
n_buffers += n_this_chunk;
n_left -= n_this_chunk;
if (n_this_chunk == 0)
break;
}
int i; u32 bytes = 0;
struct rte_mbuf **pkts = xd->rx_vectors[queue_id];
for (i = 0; i < n_buffers; i++) {
struct rte_mbuf *buff = pkts[i];
bytes += rte_pktmbuf_data_len(buff);