6lowpan: fix udp compress ordering
In case ((ntohs(uh->source) & LOWPAN_NHC_UDP_8BIT_MASK) the order of
uncompression is wrong. It's always first source port then destination
port as second.
See:
http://tools.ietf.org/html/rfc6282#section-4.3.3
"Fields carried in-line (in part or in whole) appear in the same order
as they do in the UDP header format"
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/ieee802154/6lowpan_iphc.c b/net/ieee802154/6lowpan_iphc.c
index 77c0366..1933f5b 100644
--- a/net/ieee802154/6lowpan_iphc.c
+++ b/net/ieee802154/6lowpan_iphc.c
@@ -567,9 +567,9 @@
pr_debug("UDP header: remove 8 bits of source\n");
tmp = LOWPAN_NHC_UDP_CS_P_10;
lowpan_push_hc_data(hc06_ptr, &tmp, sizeof(tmp));
- lowpan_push_hc_data(hc06_ptr, &uh->dest, sizeof(uh->dest));
tmp = (u8)(uh->source - LOWPAN_NHC_UDP_8BIT_PORT);
lowpan_push_hc_data(hc06_ptr, &tmp, sizeof(tmp));
+ lowpan_push_hc_data(hc06_ptr, &uh->dest, sizeof(uh->dest));
} else {
pr_debug("UDP header: can't compress\n");
tmp = LOWPAN_NHC_UDP_CS_P_00;