6lowpan: use memcpy to set tag value in fraghdr
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ieee802154/6lowpan_rtnl.c b/net/ieee802154/6lowpan_rtnl.c
index 178ffb9..e472618 100644
--- a/net/ieee802154/6lowpan_rtnl.c
+++ b/net/ieee802154/6lowpan_rtnl.c
@@ -265,8 +265,7 @@
/* first fragment header */
head[0] = LOWPAN_DISPATCH_FRAG1 | ((dgram_size >> 8) & 0x7);
head[1] = dgram_size & 0xff;
- head[2] = tag >> 8;
- head[3] = tag & 0xff;
+ memcpy(head + 2, &tag, sizeof(tag));
/* calc the nearest payload length(divided to 8) for first fragment
* which fits into a IEEE802154_MTU