rose: Set the destination address in rose_header

Not setting the destination address is a bug that I suspect causes no
problems today, as only the arp code seems to call dev_hard_header and
the description I have of rose is that it is expected to be used with a
static neigbour table.

I have derived the offset and the length of the rose destination address
from rose_rebuild_header where arp_find calls neigh_ha_snapshot to set
the destination address.

Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-hams@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/rose/rose_dev.c b/net/rose/rose_dev.c
index 50005888be57..24d2b40b6c6b 100644
--- a/net/rose/rose_dev.c
+++ b/net/rose/rose_dev.c
@@ -41,6 +41,9 @@ static int rose_header(struct sk_buff *skb, struct net_device *dev,
 {
         unsigned char *buff = skb_push(skb, ROSE_MIN_LEN + 2);
 
+        if (daddr)
+                memcpy(buff + 7, daddr, dev->addr_len);
+
         *buff++ = ROSE_GFI | ROSE_Q_BIT;
         *buff++ = 0x00;
         *buff++ = ROSE_DATA;