commit 573701ce3715434f01a8baea3255da8d04ad5979
author Alexander Aring <alex.aring@gmail.com> Tue Dec 17 14:21:25 2013 +0100
committer Marcel Holtmann <marcel@holtmann.org> Tue Dec 17 06:16:48 2013 -0800
tree 65925d37c0b3a48f0918e66716db81f364549834
parent e5d966eff3ac364e4505c7c4da632321657029b3

6lowpan: add udp warning for elided checksum

Bit 5 of "UDP LOWPAN_NHC Format" indicate that the checksum can be
elided.
The host need to calculate the udp checksum afterwards but this isn't
supported right now.

See:
http://tools.ietf.org/html/rfc6282#section-4.3.3
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

net/ieee802154/6lowpan.h

diff --git a/net/ieee802154/6lowpan.h b/net/ieee802154/6lowpan.h
index 4981bf8..2b835db 100644
--- a/net/ieee802154/6lowpan.h
+++ b/net/ieee802154/6lowpan.h
@@ -231,6 +231,7 @@
 #define LOWPAN_NHC_UDP_CS_P_10	0xF2 /* source = 0xF0 + 8bit inline,
 					dest = 16 bit inline */
 #define LOWPAN_NHC_UDP_CS_P_11	0xF3 /* source & dest = 0xF0B + 4bit inline */
+#define LOWPAN_NHC_UDP_CS_C	0x04 /* checksum elided */
 
 #ifdef DEBUG
 /* print data in line */