From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [bisected] xfrm: TCP connection initiating PMTU discovery
 stalls on v3.
Date: Fri, 12 Dec 2014 09:27:05 -0800
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Cc: Thomas Jarosch <thomas.jarosch@intra2net.com>,
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	Herbert Xu <herbert@gondor.apana.org.au>,
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To: Wolfgang Walter <linux@stwm.de>
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On Fri, 2014-12-12 at 17:58 +0100, Wolfgang Walter wrote:

> This fixes hangs of local tcp connections over ipsec tunnels where
> pmtu is lower than the mtu of the interface.

Again this is a work around, the one liner patch is not a clean patch.

Something is wrong, we should fix GSO path instead.

Why ? Because we can queue a GSO packet in a qdisc, then later call
sk_setup_caps() (too late)