tun, rfs: fix the incorrect hash value

The code incorrectly save the queue index as the hash, so this patch
is fixing it with the hash received in the stack receive path.

Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 3cf0457f5c699d337cd86cf2c7796bd92344d6f1..09f66624eaca1eea40793f4c6c5c057f837a2e20 100644 (file)
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -378,8 +378,8 @@ static u16 tun_select_queue(struct net_device *dev, struct sk_buff *skb)
        if (txq) {
                e = tun_flow_find(&tun->flows[tun_hashfn(txq)], txq);
                if (e) {
-                       txq = e->queue_index;
                        tun_flow_save_rps_rxhash(e, txq);
+                       txq = e->queue_index;
                } else
                        /* use multiply and shift instead of expensive divide */
                        txq = ((u64)txq * numqueues) >> 32;