netdev - Re: [PATCH 3/9] ipv6: sr: add support for SRH encapsulation and injection with lwtunnels

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Date:   Tue, 18 Oct 2016 13:47:02 +0200
From:   David Lebrun <david.lebrun@...ouvain.be>
To:     Tom Herbert <tom@...bertland.com>
CC:     Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: [PATCH 3/9] ipv6: sr: add support for SRH encapsulation and injection
 with lwtunnels

On 10/17/2016 07:17 PM, Tom Herbert wrote:
>> > +       err = ip6_dst_lookup(net, sk, &dst, &fl6);
> Please look at the use of dst_cache that I added in ila_lwt.c, I think
> the SR has similar properties and might be able to use dst_cache which
> is a significant performance improvement when source packets from a
> connected socket. The dst_cache will work in LWT as long as the new
> destination address is the same and other input to routing (saddr,
> flow label, mark, etc.) are either always the same or assumed to be
> immaterial to lookup of the second route.
> 

Great, thanks :)


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