netdev - Re: UDP multicast packet loss not reported if TX ring overrun?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 28 Aug 2009 15:53:42 -0400 (EDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	David Miller <davem@...emloft.net>
cc:	sri@...ibm.com, dlstevens@...ibm.com, eric.dumazet@...il.com,
	netdev@...r.kernel.org, niv@...ux.vnet.ibm.com
Subject: Re: UDP multicast packet loss not reported if TX ring overrun?

On Fri, 28 Aug 2009, David Miller wrote:

> From: Christoph Lameter <cl@...ux-foundation.org>
> Date: Fri, 28 Aug 2009 09:53:40 -0400 (EDT)
>
> > Seems though that the qdisc drop count does not flow into the tx_dropped
> > counter for the interface.
>
> And it should not.
>
> The qdisc drops the packet due to flow control, not the hardware
> device.
>
> Device drops are for things like transmission errors on the wire.
>
> If you start incrementing tx_dropped here, people won't be able
> to tell they have a deteriorating cable or bad switch or similar.

?? The patch does not do that. That was extra stuff not covered by the
patch.

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html