tcp_twsk_destructor 310 include/net/tcp.h extern void tcp_twsk_destructor(struct sock *sk); tcp_twsk_destructor 1173 net/ipv4/tcp_ipv4.c .twsk_destructor= tcp_twsk_destructor, tcp_twsk_destructor 906 net/ipv6/tcp_ipv6.c .twsk_destructor= tcp_twsk_destructor,