netdev - Re: PROBLEM: IPv6 TCP-Connections resetting

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Message-ID: <20130408115651.445341f5@trediske.ws.office.manitu.net>
Date:	Mon, 8 Apr 2013 11:56:51 +0200
From:	Tetja Rediske <tetja@...ja.de>
To:	christoph.paasch@...ouvain.be
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	djduanjiong@...il.com, netdev@...r.kernel.org,
	steffen.klassert@...unet.com, Neal Cardwell <ncardwell@...gle.com>,
	David Miller <davem@...emloft.net>
Subject: Re: PROBLEM: IPv6 TCP-Connections resetting

Hi,

> I made a setup to trigger the ICMPv6 Redirect.
> Yes, the bug was added by ec18d9a26 (ipv6: Add redirect support to
> all protocol icmp error handlers.), but prior to 093d04d4 (ipv6:
> Change skb->data before using icmpv6_notify() to propagate redirect)
> the stack did not enter tcp_v6_err upon a redirect message.
> 
> This, because inside icmpv6_notify, skb->data did not point to the
> inner IP header. So, when icmpv6_notify looks up the
> protocol-handler, it will not match on tcp_v6_err.

with the goto line I can't see this behaviour anymore.

Thanks!

Tetja
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