net: Add and use skb_mark_not_on_list().

An SKB is not on a list if skb->next is NULL.

Codify this convention into a helper function and use it
where we are dequeueing an SKB and need to mark it as such.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 418f03d0be90..91891041e5e1 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -577,7 +577,7 @@ static int tipc_l2_rcv_msg(struct sk_buff *skb, struct net_device *dev,
                 rcu_dereference_rtnl(orig_dev->tipc_ptr);
         if (likely(b && test_bit(0, &b->up) &&
                    (skb->pkt_type <= PACKET_MULTICAST))) {
-                skb->next = NULL;
+                skb_mark_not_on_list(skb);
                 tipc_rcv(dev_net(b->pt.dev), skb, b);
                 rcu_read_unlock();
                 return NET_RX_SUCCESS;