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From: kumaraparameshwaran rathinavel <kumaraparamesh92@gmail.com>
Date: Fri, 1 May 2020 03:07:07 +0530
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To: dev@dpdk.org, maxime.coquelin@redhat.com, yinan.wang@intel.com
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Subject: [dpdk-dev] VIRTIO DPDK
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Hi All,

We are using 16.04 version of DPDK and I am using the virtio driver in the
guest VM which uses virtio_recv_mergeable_pkts in the rx_code path and I am
thinking that there can be an infinite loop. Please let me know if this
could happen and was there any bugs reported related to this and I see the
log "*vring descriptor with no mbuf cookie at*" continuously which is
invoked inside the function  *virtqueue_dequeue_burst_rx.  *Any pointers
would be appreciated.


My code looks like this,

1118     while (i < nb_used) {
1119         struct virtio_net_hdr_mrg_rxbuf *header;
1120
1121         if (nb_rx == nb_pkts)
1122             break;
1123
1124         num = virtqueue_dequeue_burst_rx(rxvq, rcv_pkts, len, 1);
1125         if (num != 1)
1126             continue;
1127
1128         i++;
1129

Thanks,
Param.