tcp_write_queue_tail
struct sk_buff *skb = tcp_write_queue_tail(sk);
struct sk_buff *skb = tcp_write_queue_tail(sk);
skb = tcp_write_queue_tail(sk);
skb = tcp_write_queue_tail(sk);
if (!tcp_write_queue_tail(sk))
struct sk_buff *skb = tcp_write_queue_tail(sk);
skb = tcp_write_queue_tail(sk);
if (likely(max_len <= window && skb != tcp_write_queue_tail(sk)))
if ((skb != tcp_write_queue_tail(sk)) && (limit >= skb->len))
struct sk_buff *skb, *tskb, *tail = tcp_write_queue_tail(sk);
skb = tcp_write_queue_tail(ssk);