Re: ICMPv6 Redirects

[Alexander Aring <alex.aring@gmail.com>]

On Mon, Sep 29, 2014 at 03:12:21PM +0100, Simon Vincent wrote:
> 
> On 29/09/14 14:58, 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.
> I do not catch any PACKET_OTHERHOST packets in the ip6_input.c ipv6_rcv
> function.

Can you please check these two functions:

lowpan_give_skb_to_devices -> send to IPv6 layer

and

lowpan_rcv -> getting sk_buff from mac802154

and with check I mean PACKET_OTHERHOST value. I suppose we drop the
information somewhere in the middle.

- Alex