From: Eric Dumazet <eric.dumazet@gmail.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>,
"Jamal Hadi Salim" <hadi@cyberus.ca>,
"Stephen Hemminger" <shemminger@vyatta.com>,
"Jason Wang" <jasowang@redhat.com>,
"Neil Horman" <nhorman@tuxdriver.com>,
"Jiri Pirko" <jpirko@redhat.com>,
"Jeff Kirsher" <jeffrey.t.kirsher@intel.com>,
"Michał Mirosław" <mirq-linux@rere.qmqm.pl>,
"Ben Hutchings" <bhutchings@solarflare.com>,
"Herbert Xu" <herbert@gondor.hengli.com.au>
Subject: Re: [PATCH] net: orphan queued skbs if device tx can stall
Date: Tue, 10 Apr 2012 12:04:19 +0200 [thread overview]
Message-ID: <1334052259.3126.68.camel@edumazet-glaptop> (raw)
In-Reply-To: <20120410093140.GA27651@redhat.com>
On Tue, 2012-04-10 at 12:31 +0300, Michael S. Tsirkin wrote:
> True. Still this is the only interface we have for controlling
> the internal queue length so it seems safe to assume someone
> is using it for this purpose.
>
So to workaround a problem in tun, you want to hack net/core/dev.c :(
Packets in qdisc should not be orphaned.
If you think about it, why do we attach skb to socket in the first
place ?
If its not needed for tun, why should it be needed for other devices ?
If TUN has a problem being stopped forever, maybe it should take
appropriate action to flush all packets in qdisc queue after a while, as
this makes no sense to delay packets forever.
next prev parent reply other threads:[~2012-04-10 10:04 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-08 17:13 [PATCH] net: orphan queued skbs if device tx can stall Michael S. Tsirkin
2012-04-08 23:49 ` Herbert Xu
2012-04-09 7:28 ` Michael S. Tsirkin
2012-04-09 7:33 ` Herbert Xu
2012-04-09 7:39 ` Michael S. Tsirkin
2012-04-09 8:29 ` Herbert Xu
2012-04-09 8:34 ` Michael S. Tsirkin
2012-04-09 8:39 ` Herbert Xu
2012-04-09 8:42 ` Michael S. Tsirkin
2012-04-09 9:13 ` Eric Dumazet
2012-04-10 7:55 ` Eric Dumazet
2012-04-10 8:41 ` Michael S. Tsirkin
2012-04-10 8:55 ` Eric Dumazet
2012-04-10 9:31 ` Michael S. Tsirkin
2012-04-10 10:04 ` Eric Dumazet [this message]
2012-04-10 11:25 ` Michael S. Tsirkin
2012-04-10 11:45 ` Eric Dumazet
2012-04-10 12:41 ` Michael S. Tsirkin
2012-04-10 13:52 ` Eric Dumazet
2012-04-10 14:10 ` Michael S. Tsirkin
2012-04-11 21:52 ` Michael S. Tsirkin
2012-05-08 19:35 ` Michael S. Tsirkin
2012-05-08 19:50 ` Michael S. Tsirkin
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=1334052259.3126.68.camel@edumazet-glaptop \
--to=eric.dumazet@gmail.com \
--cc=bhutchings@solarflare.com \
--cc=davem@davemloft.net \
--cc=hadi@cyberus.ca \
--cc=herbert@gondor.hengli.com.au \
--cc=jasowang@redhat.com \
--cc=jeffrey.t.kirsher@intel.com \
--cc=jpirko@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mirq-linux@rere.qmqm.pl \
--cc=mst@redhat.com \
--cc=netdev@vger.kernel.org \
--cc=nhorman@tuxdriver.com \
--cc=shemminger@vyatta.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