On Sun, Jul 20, 2014 at 03:52:14PM +0200, phoebe.buckheis...@itwm.fraunhofer.de
wrote:
> > IPv6 packets sent via lowpan over iee802.15.4 with be at most 1280 octets.
> >
> > Signed-off-by: Martin Townsend <mtownsend1...@gmail.com>
> > ---
> > net/ieee802154/reassembly.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/net/ieee802154/reassembly.c b/net/ieee802154/reassembly.c
> > index b85bd3f..758377b 100644
> > --- a/net/ieee802154/reassembly.c
> > +++ b/net/ieee802154/reassembly.c
> > @@ -529,7 +529,7 @@ static int __net_init lowpan_frags_init_net(struct
> > net *net)
> > ieee802154_lowpan->frags.high_thresh = IPV6_FRAG_HIGH_THRESH;
> > ieee802154_lowpan->frags.low_thresh = IPV6_FRAG_LOW_THRESH;
> > ieee802154_lowpan->frags.timeout = IPV6_FRAG_TIMEOUT;
> > - ieee802154_lowpan->max_dsize = 0xFFFF;
> > + ieee802154_lowpan->max_dsize = IPV6_MIN_MTU;
>
> If you do that, you should probably also adjust the lowpan device MTU to
> 1280. It is currently set at 1281 for some reason.
>
yes, we should make an another patch which fix this to be RFC complaint.
diff --git a/net/ieee802154/6lowpan_rtnl.c b/net/ieee802154/6lowpan_rtnl.c
index fe6bd7a..6371644 100644
--- a/net/ieee802154/6lowpan_rtnl.c
+++ b/net/ieee802154/6lowpan_rtnl.c
@@ -433,7 +433,7 @@ static void lowpan_setup(struct net_device *dev)
/* Frame Control + Sequence Number + Address fields + Security Header */
dev->hard_header_len = 2 + 1 + 20 + 14;
dev->needed_tailroom = 2; /* FCS */
- dev->mtu = 1281;
+ dev->mtu = IPV6_MIN_MTU;
dev->tx_queue_len = 0;
dev->flags = IFF_BROADCAST | IFF_MULTICAST;
dev->watchdog_timeo = 0;
- Alex
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