Hi Fedin,

On 1/12/2016 4:39 PM, Tan, Jianfeng wrote:

Hi Fedin,

On 1/12/2016 3:45 PM, Pavel Fedin wrote:

quoted

  Hello!

  See inline

quoted

...
      }

+    struct rte_mbuf *m = NULL;
+    if (dev->dev_type == RTE_ETH_DEV_PCI)
+        vq->offset = (uintptr_t)&m->buf_addr;
+#ifdef RTE_VIRTIO_VDEV
+    else {
+        vq->offset = (uintptr_t)&m->buf_physaddr;

  Not sure, but shouldn't these be swapped? Originally, for PCI 
devices, we used buf_physaddr.

Oops, seems that you are right. I'm trying to figure out why I can 
rx/tx pkts using the wrong version.

I figure out why. When we run apps without root privilege, mempool's 
elt_pa is assigned the same of elt_va_start. So it happens to be right 
value to translate addresses. But it's definitely a bug. Thanks for 
pointing this out.

Thanks,
Jianfeng