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Date: Wed, 8 Oct 2014 16:43:52 +0530
Message-ID: <CAJuW35iS3s7yZai9Vqt7sycA7W8MNmBhe7fezq74wC3q9beQpQ@mail.gmail.com>
From: Navakanth M <navakanthdev@gmail.com>
To: dev@dpdk.org, rashmin.n.patel@intel.com
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Subject: Re: [dpdk-dev] vmxnet3 pmd dev restart
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Hi Rashmin

I have come across your reply in following post that you have worked
on this problem and would submit the patch for it.
Can you please share information on the changes you worked on or patch
log if you had submitted any for it?
http://thread.gmane.org/gmane.comp.networking.dpdk.devel/4683

Thanks
Navakanth

On Tue, Sep 30, 2014 at 1:44 PM, Navakanth M <navakanthdev@gmail.com> wrote:
> Hi
>
> I am using DPDKv1.7.0 running on Vmware Esxi 5.1 and am trying to
> reset the port which uses pmd_vmnet3 library functions from below
> function calls.
> rte_eth_dev_stop
> rte_eth_dev_start
>
> Doing this, i face panic while rte_free(ring->buf_info) in
> Vmxnet3_cmd_ring_release().
> I have gone through following thread but the patch mentioned didn't
> help rather it crashed in start function while accessing buf_info in
> vmxnet3_post_rx_bufs. I see this buf_info is allocated in queue setup
> functions which are called at initialization.
> http://thread.gmane.org/gmane.comp.networking.dpdk.devel/4683
>
> I tried not freeing it and then rx packets are not received due to mismatch in
> while (rcd->gen == rxq->comp_ring.gen) in vmxnet3_recv_pkts()
>
> To reset the device port, is this the right way what i am doing?
> Or do I have to call vmxnet3_dev_tx_queue_setup()
> vmxnet3_dev_rx_queue_setup() once stop is called? I have checked
> recent patches and threads but did not get much information on this.
>
> Thanks
> Navakanth