lkml.org 
[lkml]   [2014]   [Jul]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] ip_tunnel: fix ip_tunnel_lookup
From
From: Dmitry Popov <ixaphire@qrator.net>
Date: Wed, 9 Jul 2014 04:47:59 +0400

> How I see ip_tunnel_lookup logic:
> 1) try to find exact match (and if found return this tunnel):
> tunnel.saddr == iph.daddr && tunnel.daddr == iph.saddr && key_matched()
> 2) try to find matched (local) wildcard tunnel:
> tunnel.saddr == any && tunnel.daddr == iph.saddr && key_matched()
> 3) try to find matched (remote) wildcard tunnel:
> tunnel.saddr == iph.daddr && tunnel.daddr == any && key_matched()
> (there is also a test for multicast tunnel, but let's skip it for simplicity)
> 4) try to find matched (full) wildcard tunnel:
> tunnel.saddr == any && tunnel.daddr == any && key_matched()
> 5) if nothing found return default tunnel.
>
> According to this logic, in 4th loop (the one you quoted) we have to test that
> tunnel.daddr == any && tunnel.saddr == any. In my opinion those two new lines
> are the best way to achieve it.

Now it makes sense, thanks for explaining.

Applied and queued up for -stable, thanks again.


\
 
 \ /
  Last update: 2014-07-09 05:01    [W:0.033 / U:0.160 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site