tcp_queue
int tcp_fragment(struct sock *sk, enum tcp_queue tcp_queue,
enum tcp_queue tcp_queue)
if (tcp_queue == TCP_FRAG_IN_WRITE_QUEUE)
int tcp_fragment(struct sock *sk, enum tcp_queue tcp_queue,
tcp_queue != TCP_FRAG_IN_WRITE_QUEUE &&
tcp_insert_write_queue_after(skb, buff, sk, tcp_queue);
if (tcp_queue == TCP_FRAG_IN_RTX_QUEUE)