From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-we0-f179.google.com ([74.125.82.179]:57873 "EHLO mail-we0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754387AbaI2OM5 (ORCPT ); Mon, 29 Sep 2014 10:12:57 -0400 Received: by mail-we0-f179.google.com with SMTP id u56so5130842wes.38 for ; Mon, 29 Sep 2014 07:12:56 -0700 (PDT) Date: Mon, 29 Sep 2014 16:12:53 +0200 From: Alexander Aring Subject: Re: ICMPv6 Redirects Message-ID: <20140929141249.GB15411@omega> References: <5429441C.5000302@gmail.com> <5429466F.4080506@gmail.com> <54295556.3030800@xsilon.com> <20140929131200.GA14608@omega> <20140929133048.GB14608@omega> <54295FA9.8030506@xsilon.com> <20140929133841.GA15176@omega> <542963F7.4030903@xsilon.com> <20140929135759.GA15411@omega> <54296711.8060006@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <54296711.8060006@gmail.com> Sender: linux-wpan-owner@vger.kernel.org List-ID: To: Varka Bhadram Cc: Simon Vincent , linux-wpan@vger.kernel.org On Mon, Sep 29, 2014 at 07:35:05PM +0530, Varka Bhadram wrote: > On Monday 29 September 2014 07:28 PM, Alexander Aring wrote: > >On Mon, Sep 29, 2014 at 02:51:51PM +0100, Simon Vincent wrote: > >>Sorry for the confusion. My problem is I am receiving all packets. > >>PACKET_OTHERHOST does not seem to be dropped. A suggestion from Varka was to > >>disable redirects however it now seems that this is not possible on a ipv6 > >>interface. > >> > >>I can fix the problem by dropping PACKET_OTHERHOST in mac802154_subif_frame. > >The first what IPv6 does is [0]. > > > >See my previous mail. Also that we should handle on 6LoWPAN packet > >handler function for receiving "lowpan_rcv" we should do the same, > >otherwise we parsing PACKET_OTHERHOST sk_buff's and drop these directly > >in IPv6 layer, which makes no sense. > > > >But what I see is that the current behaviour should also work. > >Instrument the IPv6 delivery function and be sure that the information > >about PACKET_OTHERHOST was not dropped. > > > >- Alex > > > >[0] http://lxr.free-electrons.com/source/net/ipv6/ip6_input.c#L72 > > Generally Echo reply will happen at the IP Layer. But the dropping of packet is > happening at IPv6 layer by as you mentioned above. > IP Layer == (IPv6 || IPv4) I don't understand what you mean. There is some code sharing between IPv4 and IPv6 like neighbor discovery and ARP handling. Also for route things... - Alex