Subject: Re: [PATCH] udp: fix for unicast RX path optimization

From: David Miller <[email-masked]>
Date: Thu, 08 Apr 2010 11:30:02 -0700 (PDT)

From: Eric Dumazet <[email-masked]>
Date: Thu, 08 Apr 2010 17:12:27 +0200

> Le jeudi 08 avril 2010 à 16:56 +0200, Jorge Boncompte [DTI2] a écrit :
>> 	Commits 5051ebd275de672b807c28d93002c2fb0514a3c9 and
>> 5051ebd275de672b807c28d93002c2fb0514a3c9 ("ipv[46]: udp: optimize unicast RX
>> path") broke some programs.
>> 
>> 	After upgrading a L2TP server to 2.6.33 it started to fail, tunnels going up an
>> down, after the 10th tunnel came up. My modified rp-l2tp uses a global
>> unconnected socket bound to (INADDR_ANY, 1701) and one connected socket per
>> tunnel after parameter negotiation.
>> 
>> 	After ten sockets were open and due to mixed parameters to
>> udp[46]_lib_lookup2() kernel started to drop packets.
>> 
>> Signed-off-by: Jorge Boncompte [DTI2] <[email-masked]>
 ...
> Signed-off-by: Eric Dumazet <[email-masked]>

Applied and queued up for -stable.