taglinefilesource code
fin_seq563net/inet/af_inet.csk->fin_seq = 0;
fin_seq64net/inet/sock.hunsigned long      fin_seq;
fin_seq1980net/inet/tcp.cnewsk->fin_seq = skb->h.th->seq;
fin_seq2855net/inet/tcp.cif (sk->rcv_ack_seq == sk->write_seq && sk->acked_seq == sk->fin_seq) 
fin_seq2877net/inet/tcp.cif (sk->acked_seq != sk->fin_seq) 
fin_seq3318net/inet/tcp.csk->fin_seq = th->seq + skb->len + th->syn + th->fin;
fin_seq4111net/inet/tcp.csk->fin_seq = th->seq;