patches for DPDK stable branches
 help / color / mirror / Atom feed
From: "Xia, Chenbo" <chenbo.xia@intel.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>,
	Ilya Maximets <i.maximets@ovn.org>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
	Adrian Moreno <amorenoz@redhat.com>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	Julia Suvorova <jusual@redhat.com>,
	"stable@dpdk.org" <stable@dpdk.org>,
	"Yang, Zhiyong" <zhiyong.yang@intel.com>
Subject: Re: [dpdk-stable] [PATCH 1/4] net/virtio: fix interrupt unregistering for listening socket
Date: Wed, 7 Apr 2021 07:21:50 +0000
Message-ID: <MN2PR11MB40635369D996E028F3A594059C759@MN2PR11MB4063.namprd11.prod.outlook.com> (raw)
In-Reply-To: <9bc9ed67-521d-2c12-c965-cba3a69bbd77@redhat.com>

> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin@redhat.com>
> Sent: Thursday, March 25, 2021 4:32 PM
> To: Ilya Maximets <i.maximets@ovn.org>
> Cc: Xia, Chenbo <chenbo.xia@intel.com>; dev@dpdk.org; Adrian Moreno
> <amorenoz@redhat.com>; Stefan Hajnoczi <stefanha@redhat.com>; Julia Suvorova
> <jusual@redhat.com>; stable@dpdk.org; Yang, Zhiyong <zhiyong.yang@intel.com>
> Subject: Re: [PATCH 1/4] net/virtio: fix interrupt unregistering for listening
> socket
> 
> 
> 
> On 3/17/21 9:25 PM, Ilya Maximets wrote:
> > virtio_user_dev_server_reconnect() is typically called from the
> > interrupt context while checking the link state:
> >
> >   vhost_user_update_link_state()
> >   --> virtio_user_dev_server_reconnect()
> >
> > Under this conditions callback unregistering always fails.  This means
> > that listenfd is never unregistered and continue to trigger interrupts.
> > For example, if second client will try to connect to the same socket,
> > the server will receive interrupts infinitely because it will not
> > accept them while listen fd is readable and generates epoll events.
> >
> > Fix that by moving reconfiguration of interrupts out of the
> > interrupt context to alarm handler.
> >
> > 'virtio_user_dev_delayed_handler' renamed to
> > 'virtio_user_dev_delayed_disconnect_handler' to better reflect its
> > purpose.
> >
> > Additionally improved error logging around interrupt management.
> >
> > Fixes: bd8f50a45d0f ("net/virtio-user: support server mode")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
> > ---
> >
> > CC: Zhiyong Yang <zhiyong.yang@intel.com>
> >
> >  drivers/net/virtio/virtio_user/vhost_user.c   |  4 +-
> >  .../net/virtio/virtio_user/virtio_user_dev.c  | 70 ++++++++++++++-----
> >  .../net/virtio/virtio_user/virtio_user_dev.h  |  2 +-
> >  3 files changed, 57 insertions(+), 19 deletions(-)
> >
> 
> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> 
> Thanks,
> Maxime

This patch is applied to next-virtio/main with below fix:

In virtio_user_dev_delayed_intr_reconfig_handler, change 'dev->port_id' to 'dev->hw.port_id'

Thanks

      reply	other threads:[~2021-04-07  7:22 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20210317202530.4145673-1-i.maximets@ovn.org>
2021-03-17 20:25 ` Ilya Maximets
2021-03-25  8:32   ` Maxime Coquelin
2021-04-07  7:21     ` Xia, Chenbo [this message]

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=MN2PR11MB40635369D996E028F3A594059C759@MN2PR11MB4063.namprd11.prod.outlook.com \
    --to=chenbo.xia@intel.com \
    --cc=amorenoz@redhat.com \
    --cc=dev@dpdk.org \
    --cc=i.maximets@ovn.org \
    --cc=jusual@redhat.com \
    --cc=maxime.coquelin@redhat.com \
    --cc=stable@dpdk.org \
    --cc=stefanha@redhat.com \
    --cc=zhiyong.yang@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

patches for DPDK stable branches

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.dpdk.org/stable/0 stable/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 stable stable/ https://inbox.dpdk.org/stable \
		stable@dpdk.org
	public-inbox-index stable

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.stable


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git