From: Ben Hutchings <bhutchings@solarflare.com>
To: "\"Oleg A. Arkhangelsky\"" <sysoleg@yandex.ru>
Cc: netdev@vger.kernel.org
Subject: Re: [net-next-2.6 PATCH] Preserve queue mapping with bonding and VLAN devices
Date: Tue, 23 Feb 2010 15:59:01 +0000 [thread overview]
Message-ID: <1266940741.2109.7.camel@achroite.uk.solarflarecom.com> (raw)
In-Reply-To: <33081266938239@webmail48.yandex.ru>
On Tue, 2010-02-23 at 18:17 +0300, "Oleg A. Arkhangelsky" wrote:
>
> Must be applied with "[net-next-2.6 PATCH] Multiqueue support for bonding devices"
>
> Forwarded packet goes more that once throught dev_queue_xmit() when
> using bonding or 802.1q VLAN devices, so we've lost rx-tx queue mapping
> index for real devices.
[...]
The queue mapping will normally be the same, only no longer biased by 1.
So I think a better solution would be to maintain that bias on TX as
well, or to remove the bias and reserve -1 for unknown RX queue.
We already have hardware that can do RSS across up to 128 RX queues, so
an 8-bit limit is uncomfortably close.
Ben.
--
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
next prev parent reply other threads:[~2010-02-23 15:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-23 15:17 [net-next-2.6 PATCH] Preserve queue mapping with bonding and VLAN devices "Oleg A. Arkhangelsky"
2010-02-23 15:59 ` Ben Hutchings [this message]
2010-02-23 19:36 ` "Oleg A. Arkhangelsky"
2010-02-24 9:53 ` Jeff Kirsher
2010-02-26 13:50 ` David Miller
2010-02-27 9:53 ` "Oleg A. Arkhangelsky"
2010-02-27 10:02 ` David Miller
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