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From: Navakanth M <navakanthdev@gmail.com>
To: dev@dpdk.org
Subject: [dpdk-dev] vmxnet3 pmd dev restart
Date: Tue, 30 Sep 2014 13:44:48 +0530	[thread overview]
Message-ID: <CAJuW35gvYkzOBE7PtOepj0YDGwb79OWGB_Bp1fo6vD5if+BEDQ@mail.gmail.com> (raw)

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

             reply	other threads:[~2014-09-30  8:08 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-30  8:14 Navakanth M [this message]
2014-10-08 11:13 ` Navakanth M
2014-10-08 19:16   ` Patel, Rashmin N
2014-10-09  5:10     ` Navakanth M
2014-10-09 22:06       ` Patel, Rashmin N
2014-10-10  3:09         ` Cao, Waterman
2014-10-13  3:07           ` Navakanth M
2014-10-13 18:12             ` Patel, Rashmin N
2014-10-26  4:48               ` Navakanth M

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