tcp_write_wakeup 587 include/net/tcp.h int tcp_write_wakeup(struct sock *, int mib); tcp_write_wakeup 3824 net/ipv4/tcp_output.c err = tcp_write_wakeup(sk, LINUX_MIB_TCPWINPROBE); tcp_write_wakeup 709 net/ipv4/tcp_timer.c if (tcp_write_wakeup(sk, LINUX_MIB_TCPKEEPALIVE) <= 0) {