netdev - Re: [PATCH net-next] net: enable RPS on vlan devices

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Date:   Wed, 10 Oct 2018 11:25:46 -0700
From:   Shannon Nelson <shannon.nelson@...cle.com>
To:     John Fastabend <john.fastabend@...il.com>,
        Eric Dumazet <eric.dumazet@...il.com>, davem@...emloft.net,
        netdev@...r.kernel.org
Cc:     silviu.smarandache@...cle.com
Subject: Re: [PATCH net-next] net: enable RPS on vlan devices

On 10/10/2018 10:37 AM, John Fastabend wrote:
> Latest tree has a sk_lookup() helper supported in 'tc' layer now
> to lookup the socket. And XDP has support for a "cpumap" object
> that allows redirect to remote CPUs. Neither was specifically
> designed for this but I suspect with some extra work these might
> be what is needed.
> 
> I would start by looking at bpf_sk_lookup() in filter.c and the
> cpumap type in ./kernel/bpf/cpumap.c, also in general sk_lookup
> from XDP layer will likely be needed shortly anyways.

Thanks, John, for pointing to something I can start looking at.  My 
customer still wants to use the RPS that they already know, but I'll 
start looking into how this also might work for us.

sln