From: "Zhang, Peng1X" <peng1x.zhang@intel.com>
To: "lihuisong (C)" <lihuisong@huawei.com>,
Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: "Singh, Aman Deep" <aman.deep.singh@intel.com>,
"Zhang, Yuying" <yuying.zhang@intel.com>,
"stable@dpdk.org" <stable@dpdk.org>
Subject: RE: [PATCH] app/testpmd: fix secondary process cannot dump packet
Date: Tue, 5 Jul 2022 10:12:33 +0000 [thread overview]
Message-ID: <CO1PR11MB5105C7AE6F973E7E9E5D2054CE819@CO1PR11MB5105.namprd11.prod.outlook.com> (raw)
In-Reply-To: <9a5ab8bb-ccdd-25d2-65d6-370ef95ab712@huawei.com>
Hi Song,
Currently this patch is just fix the issue detected for rx queue on secondary process.
Later patch for tx queue will be submit.
@Andrew, what's your opinion about the solution of this patch?
Thanks,
Peng
> -----Original Message-----
> From: lihuisong (C) <lihuisong@huawei.com>
> Sent: Monday, July 4, 2022 10:37 AM
> To: Zhang, Peng1X <peng1x.zhang@intel.com>; Andrew Rybchenko
> <andrew.rybchenko@oktetlabs.ru>; dev@dpdk.org
> Cc: Singh, Aman Deep <aman.deep.singh@intel.com>; Zhang, Yuying
> <yuying.zhang@intel.com>; stable@dpdk.org
> Subject: Re: [PATCH] app/testpmd: fix secondary process cannot dump packet
>
> Hi Peng1X,
>
> 在 2022/7/1 19:36, Zhang, Peng1X 写道:
> > Hi,
> > In fact, the patch is aim to fix this issue that secondary process cannot dump
> packet after start testpmd.
> > This issue is induced by commit id is 3c4426db54fc ("app/testpmd: do
> > not poll stopped queues"). After secondary process start, the default
> > value of Rx/Tx queue state maintained by testpmd is
> > 'RTE_ETH_QUEUE_STATE_STOPPED', the 'fsm[sm_id]->disabled' flag will set
> true according to queues state, then packet cannot forward and dump.
> I get your meaning.
> However, failing to dump packet isn't the first exception, and the first one is
> that testpmd doesn't call 'struct fwd_engine::packet_fwd()' to receive or send
> packet.
> So, I think you should describe and resolve this problem from this point. This
> patch cannot completely resolve this problem. The Tx queue state should also
> be added here.
> >
> > The reason why not use 'dev->data->rx_queue_state' is whether queue
> > state is start or stop in primary process depend on
> > rx_conf->rx_deferred_start after start testpmd. And after having started
> testpmd, queue state can be controlled by command for example 'port x rxq x
> start'.
> > Should we align with the same behavior of queues state for primary and
> secondary process after start testpmd?
> If primary process stops a queue, but secondary doesn't know.
> we have to simplify this queue state problem like you momentioned if we don't
> have a good idea.
>
> @Andrew, what do you think?
>
> Thanks,
>
> Huisong
>
> >
> >> -----Original Message-----
> >> From: lihuisong (C) <lihuisong@huawei.com>
> >> Sent: Wednesday, June 29, 2022 10:55 AM
> >> To: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>; Zhang, Peng1X
> >> <peng1x.zhang@intel.com>; dev@dpdk.org
> >> Cc: Singh, Aman Deep <aman.deep.singh@intel.com>; Zhang, Yuying
> >> <yuying.zhang@intel.com>; stable@dpdk.org
> >> Subject: Re: [PATCH] app/testpmd: fix secondary process cannot dump
> >> packet
> >>
> >>
> >> 在 2022/6/23 20:10, Andrew Rybchenko 写道:
> >>> On 6/23/22 21:15, peng1x.zhang@intel.com wrote:
> >>>> From: Peng Zhang <peng1x.zhang@intel.com>
> >>>>
> >>>> The origin design is whether testpmd is primary or not, if state of
> >>>> receive queue is stop, then packets will not be dumped for show.
> >>>> While to secondary process, receive queue will not be set up, and
> >>>> state will still be stop even if testpmd is started. So packets of
> >>>> stated secondary process cannot be dumped for show.
> >>>>
> >>>> The current design is to secondary process state of queue will be
> >>>> set to start after testpmd is started. Then packets of started
> >>>> secondary process can be dumped for show.
> >>>>
> >>>> Fixes: a550baf24af9 ("app/testpmd: support multi-process")
> >>>> Cc: stable@dpdk.org
> >>>>
> >>>> Signed-off-by: Peng Zhang <peng1x.zhang@intel.com>
> >>>> ---
> >>>> app/test-pmd/testpmd.c | 12 ++++++++++++
> >>>> 1 file changed, 12 insertions(+)
> >>>>
> >>>> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c index
> >>>> 205d98ee3d..93ba7e7c9b 100644
> >>>> --- a/app/test-pmd/testpmd.c
> >>>> +++ b/app/test-pmd/testpmd.c
> >>>> @@ -3007,6 +3007,18 @@ start_port(portid_t pid)
> >>>> if (setup_hairpin_queues(pi, p_pi, cnt_pi) != 0)
> >>>> return -1;
> >>>> }
> >>>> +
> >>>> + if (port->need_reconfig_queues > 0 && !is_proc_primary())
> >>>> +{
> >>>> + struct rte_eth_rxconf *rx_conf;
> >>>> + for (qi = 0; qi < nb_rxq; qi++) {
> >>>> + rx_conf = &(port->rxq[qi].conf);
> >>>> + ports[pi].rxq[qi].state =
> >>>> + rx_conf->rx_deferred_start ?
> >>>> + RTE_ETH_QUEUE_STATE_STOPPED :
> >>>> + RTE_ETH_QUEUE_STATE_STARTED;
> >>> I'm not sure why it is correct to assume that deferred queue is not
> >>> yet started.
> >> +1.
> >>
> >> We should also consider whether the queue state can be changed in
> secondary.
> >> The 'rx_conf->rx_deferred_start' is the data in secondary.
> >> Why not use 'dev->data->rx_queue_state[]'.
> >>
> >> In fact, the issue you memtioned was introduced the following patch:
> >> Fixes: 3c4426db54fc ("app/testpmd: do not poll stopped queues")
> >>
> >> The root cause of this issue is that the default value of Rx/Tx queue
> >> state maintained by testpmd is 'RTE_ETH_QUEUE_STATE_STOPPED'. As a
> >> result, secondary doesn't start polling thread to receive packets
> >> when start packet forwarding. And now, secondary cannot receive and send
> any packets.
> >>
> >> Could you fix it together?
> >>>> + }
> >>>> + }
> >>>> +
> >>>> configure_rxtx_dump_callbacks(verbose_level);
> >>>> if (clear_ptypes) {
> >>>> diag = rte_eth_dev_set_ptypes(pi, RTE_PTYPE_UNKNOWN,
> >>> .
next prev parent reply other threads:[~2022-07-05 10:12 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-23 18:15 peng1x.zhang
2022-06-23 12:10 ` Andrew Rybchenko
2022-06-29 2:55 ` lihuisong (C)
2022-07-01 11:36 ` Zhang, Peng1X
2022-07-04 2:36 ` lihuisong (C)
2022-07-04 5:28 ` Dmitry Kozlyuk
2022-07-05 10:12 ` Zhang, Peng1X [this message]
2022-07-06 2:00 ` lihuisong (C)
2022-07-06 13:40 ` Andrew Rybchenko
2022-06-27 4:53 ` Zhang, Yuying
2022-07-01 9:21 ` Zhang, Yuying
2022-08-19 10:09 ` [PATCH v2] app/testpmd: fix incorrect queues state of secondary process peng1x.zhang
2022-08-24 18:21 ` Singh, Aman Deep
2022-08-26 7:47 ` Zhang, Peng1X
2022-09-06 14:53 ` [PATCH v3] " Peng Zhang
2022-09-07 1:53 ` lihuisong (C)
2022-10-13 3:33 ` Stephen Hemminger
2022-10-14 10:11 ` Zhou, YidingX
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CO1PR11MB5105C7AE6F973E7E9E5D2054CE819@CO1PR11MB5105.namprd11.prod.outlook.com \
--to=peng1x.zhang@intel.com \
--cc=aman.deep.singh@intel.com \
--cc=andrew.rybchenko@oktetlabs.ru \
--cc=dev@dpdk.org \
--cc=lihuisong@huawei.com \
--cc=stable@dpdk.org \
--cc=yuying.zhang@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).