tcp_v6_send_ack  1031 net/ipv6/tcp_ipv6.c 	tcp_v6_send_ack(sk, skb, tcptw->tw_snd_nxt, tcptw->tw_rcv_nxt,
tcp_v6_send_ack  1051 net/ipv6/tcp_ipv6.c 	tcp_v6_send_ack(sk, skb, (sk->sk_state == TCP_LISTEN) ?