OPTION_FAST_OPEN_COOKIE 527 net/ipv4/tcp_output.c if (unlikely(OPTION_FAST_OPEN_COOKIE & options)) { OPTION_FAST_OPEN_COOKIE 646 net/ipv4/tcp_output.c opts->options |= OPTION_FAST_OPEN_COOKIE; OPTION_FAST_OPEN_COOKIE 711 net/ipv4/tcp_output.c opts->options |= OPTION_FAST_OPEN_COOKIE;