ip_queue_xmit
int ip_queue_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl);
EXPORT_SYMBOL(ip_queue_xmit);
.queue_xmit = ip_queue_xmit,
INDIRECT_CALLABLE_DECLARE(int ip_queue_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl));
inet6_csk_xmit, ip_queue_xmit,
.queue_xmit = ip_queue_xmit,
err = ip_queue_xmit(tunnel->sock, skb, fl);
rc = ip_queue_xmit(sk, skb, &inet->cork.fl);