From: wang.yong19@zte.com.cn
To: yuanhan.liu@linux.intel.com
Cc: dev@dpdk.org
Subject: [dpdk-dev] examples/vhost: how to use vhost-switch between VMs?
Date: Fri, 23 Dec 2016 19:15:12 +0800 [thread overview]
Message-ID: <OF1A741D7D.89D6A688-ON48258092.003D8C87-48258092.003DCD04@zte.com.cn> (raw)
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Dear Mr. Liu,
There are some descriptions in
dpdk-16.11\doc\guides\sample_app_ug\vhost.rst,
"The sample application performs simple packet switching between virtual
machines based on Media Access Control (MAC) address or Virtual Local Area
Network (VLAN) tag." So, we runned the vhost-switch sample in a VM with
three
virtio ports. First, we binded one virtio port to igb_uio. Then we runned
the command
"./vhost-switch -c f -n 4 --socket-mem 1024 -- --socket-file /tmp/sock0
¨C-vm2vm 1 ¨C-dequeue-zero-copy"
And then error occured. We found that the 'dev_info.max_vmdq_pools' of the
virtio
port was 0, and division by zero error occured at the statement
'queues_per_pool = dev_info.vmdq_queue_num / dev_info.max_vmdq_pools;'
We fixed this by assigning 'queues_per_pool' to 0 if
'dev_info.max_vmdq_pools'
was 0, but there were still other errors when running vhost-switch.
So, we doubted whether we use the vhost-switch in a wrong way. Could you
please give us some advice that how to use the vhost-switch between two or
more
VMs?
I look forward to hearing from you.
Yours faithfully,
Yong Wang
reply other threads:[~2016-12-23 11:15 UTC|newest]
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