All of lore.kernel.org
 help / color / mirror / Atom feed
From: Rasesh Mody <rmody@marvell.com>
To: Thomas Monjalon <thomas@monjalon.net>,
	Jerin Jacob <jerinjacobk@gmail.com>,
	Ferruh Yigit <ferruh.yigit@intel.com>
Cc: dpdk-dev <dev@dpdk.org>,
	Jerin Jacob Kollanukkaran <jerinj@marvell.com>,
	GR-Everest-DPDK-Dev <GR-Everest-DPDK-Dev@marvell.com>,
	Igor Russkikh <irusskikh@marvell.com>,
	Andrew Rybchenko <arybchenko@solarflare.com>
Subject: Re: [dpdk-dev] [EXT] Re: [PATCH 2/2] net/qede: restore Tx queue setup
Date: Wed, 6 May 2020 02:43:34 +0000	[thread overview]
Message-ID: <BYAPR18MB2838855101EF89E820BD6C29B5A40@BYAPR18MB2838.namprd18.prod.outlook.com> (raw)
In-Reply-To: 4248918.cEBGB3zze1@thomas

Hi,

>From: Thomas Monjalon <thomas@monjalon.net>
>Sent: Tuesday, May 05, 2020 2:15 AM
>
>05/05/2020 10:59, Ferruh Yigit:
>> On 5/5/2020 7:44 AM, Jerin Jacob wrote:
>> > On Tue, May 5, 2020 at 8:39 AM Rasesh Mody <rmody@marvell.com>
>wrote:
>> >>
>> >> Some applications do not explicitly restore Tx queues setup during
>> >> port re-configuration. This patch adds changes to check for
>> >> released Tx queues and restore the setup if application doesn't
>> >> explicitly does that.
>> >
>> > +ethdev maintainers.
>> >
>> > I think, Ideally, the fix should be in common code if we need to
>> > support such applications.
>>
>> Is this a case application re-configures to increase the number of
>> queues but doesn't setup new queues?
>> If so this looks like application error and application should be
>> fixed instead of recover this in the ethdev.
>
>+1
>

This is a case of KNI application performing device re-configuration to change MTU. The application explicitly calls Rx queue setup, however doesn't call Tx queue setup. When MTU for KNI interface is changed it runs into a segfault when trying to start Tx queues.
Some other applications make use of rte_eth_dev_set_mtu() ethdev op, which looks to be cleaner approach.

Thanks!
-Rasesh


  reply	other threads:[~2020-05-06  2:43 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-05  3:09 [dpdk-dev] [PATCH 1/2] net/qede: fix assignment of Rx/Tx handlers Rasesh Mody
2020-05-05  3:09 ` [dpdk-dev] [PATCH 2/2] net/qede: restore Tx queue setup Rasesh Mody
2020-05-05  6:44   ` Jerin Jacob
2020-05-05  8:59     ` Ferruh Yigit
2020-05-05  9:15       ` Thomas Monjalon
2020-05-06  2:43         ` Rasesh Mody [this message]
2020-05-10  7:04           ` [dpdk-dev] [EXT] " Jerin Jacob
2020-05-14  4:10             ` Rasesh Mody
2020-05-14  7:56               ` Jerin Jacob
2020-05-14 14:32           ` Ferruh Yigit
2020-05-14 22:43             ` Rasesh Mody
2020-05-15 10:39               ` Ferruh Yigit
2020-05-05  9:01 ` [dpdk-dev] [PATCH 1/2] net/qede: fix assignment of Rx/Tx handlers Ferruh Yigit
2020-05-06  2:34   ` [dpdk-dev] [EXT] " Rasesh Mody
2020-05-14  4:09 ` [dpdk-dev] [PATCH v2 " Rasesh Mody
2020-05-14  4:09 ` [dpdk-dev] [PATCH v2 2/2] examples/kni: fix MTU change to setup Tx queue Rasesh Mody
2020-05-14 15:33   ` Ferruh Yigit
2020-05-15 11:29   ` Ferruh Yigit
2020-05-19 16:31     ` Thomas Monjalon
2020-05-15  6:34 ` [dpdk-dev] [PATCH v3 1/2] net/qede: fix assignment of Rx/Tx handlers Rasesh Mody
2020-05-15 12:26   ` Jerin Jacob
2020-05-15  6:34 ` [dpdk-dev] [PATCH v3 2/2] net/qede: fix port reconfiguration Rasesh Mody

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=BYAPR18MB2838855101EF89E820BD6C29B5A40@BYAPR18MB2838.namprd18.prod.outlook.com \
    --to=rmody@marvell.com \
    --cc=GR-Everest-DPDK-Dev@marvell.com \
    --cc=arybchenko@solarflare.com \
    --cc=dev@dpdk.org \
    --cc=ferruh.yigit@intel.com \
    --cc=irusskikh@marvell.com \
    --cc=jerinj@marvell.com \
    --cc=jerinjacobk@gmail.com \
    --cc=thomas@monjalon.net \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.