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Subject: Re: nice stuff from cloudflare (and, we need something like ethtool!)
To: freebsd-net@freebsd.org
References: <CA+hQ2+hFHeS_+CLS6Y7XSVUPQjppd6pPmgPHWy8fw+A5hK+MRQ@mail.gmail.com>
From: Julian Elischer <julian@freebsd.org>
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Date: Thu, 15 Oct 2015 17:03:55 +0800
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On 10/10/15 10:59 PM, Luigi Rizzo wrote:
> the nice folks at cloudflare implemented a nice feature
> in netmap that puts some queues of the NIC in netmap mode
> leaving others attached to the host stack
>
> https://blog.cloudflare.com/single-rx-queue-kernel-bypass-with-netmap/
>
> and use ethtool (and native NIC filters) to steer traffic around.
> [FWIW, the chelsio native netmap driver is similar except that
> the netmap queue has a different MAC address]
>
> While their code was developed on linux, it should run
> almost unmodified on FreeBSD (and we plan to import it soon),
> except for the fact that we don't have ethtool hence no
> device-independent mechanism to configure traffic steering.
>
> We really need to address the latter.

I suspect the answer may be a device dependent sysctl

>
> cheers
> luigi
>
>