netdev - Re: A problem about ICMP packet-too-big message handler

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Date:	Wed, 28 Jan 2015 04:45:09 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Yang Yingliang <yangyingliang@...wei.com>
Cc:	Martin Lau <kafai@...com>, netdev <netdev@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: A problem about ICMP packet-too-big message handler

On Wed, 2015-01-28 at 14:46 +0800, Yang Yingliang wrote:
> On 2015/1/28 13:19, Martin Lau wrote:
> > On Tue, Jan 27, 2015 at 08:58:53PM +0800, Yang Yingliang wrote:
> >> Hi,
> >>
> >> My kernel is 3.10 LTS.
> >>
> >> I got a problem here about handling ICMP packet-too-big message.
> >>
> >> Before sending a packet-too-big packet :
> > The expires should be set by the host _receiving_ the icmpv6 too-big.
> > 
> > Can you spell out some details of the outgoing icmpv6 too-big packet?
> > like, the src/dst ip of the icmpv6 and the original ip packet that triggered the
> > too-big.
> > 
> 
> I don't send too-big packet to trigger the err handling.
> 
> I just only send a ICMPv6 packet which type is ICMPV6_PKT_TOOBIG.

You meant : you received an ICMPv6 packet, or you send it ?



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