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Date:      Wed, 4 May 2005 15:32:00 +0100
From:      Bruce M Simpson <bms@spc.org>
To:        Andre Oppermann <andre@FreeBSD.org>
Cc:        cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/netinet tcp_subr.c
Message-ID:  <20050504143200.GC746@empiric.icir.org>
In-Reply-To: <200505041348.j44DmiEQ055445@repoman.freebsd.org>
References:  <200505041348.j44DmiEQ055445@repoman.freebsd.org>

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On Wed, May 04, 2005 at 01:48:44PM +0000, Andre Oppermann wrote:
>   Log:
>   If we don't get a suggested MTU during path MTU discovery
>   look up the packet size of the packet that generated the
>   response, step down the MTU by one step through ip_next_mtu()
>   and try again.

Yay! Now I really need to sit down and sort out the gre(4) PMTU story.

Of course a more generic way of doing this might be good, e.g. a generic
PMTU callback for each protocol which needs to exchange this information
with the IP/ICMP layer.

BMS



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