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 (file)
--- a/net/ieee802154/6lowpan_rtnl.c
+++ b/net/ieee802154/6lowpan_rtnl.c
@@ -265,8 +265,7 @@ lowpan_skb_fragmentation(struct sk_buff *skb, struct net_device *dev)
        /* 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