netdev - Re: IPoIB: Fix multicast packet drops before join is complete

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]

Message-ID: <alpine.DEB.1.10.0906081114530.21954@gentwo.org>
Date:	Mon, 8 Jun 2009 11:16:28 -0400 (EDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Roland Dreier <rdreier@...co.com>
cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	yosefe@...taire.COM
Subject: Re: IPoIB: Fix multicast packet drops before join is complete

On Fri, 5 Jun 2009, Roland Dreier wrote:

>
>  > This is actually better than IPoIB there is nothing before
>  > the initial traffic that arrives. In the IPoIB case 3 packets arrive
>  > suggesting to the other side that the link is okay.
>
> So maybe we should drop the *oldest* packet on queue overflow?  Would
> that make things better?

Definitely. That would avoid the apps thinking that there was a huge
outage. Also the join times on some fabrics can be quite long if there is
heavy reconfiguration of the switch fabric going on. In the
order of seconds it seems. The packet is definitely stale by that time.


--
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