tcp_clock_ns 762 include/net/tcp.h return div_u64(tcp_clock_ns(), NSEC_PER_USEC); tcp_clock_ns 774 include/net/tcp.h return div_u64(tcp_clock_ns(), NSEC_PER_SEC / TCP_TS_HZ); tcp_clock_ns 2308 include/net/tcp.h return tcp_clock_ns() + (u64)delay * NSEC_PER_USEC; tcp_clock_ns 54 net/ipv4/tcp_output.c u64 val = tcp_clock_ns(); tcp_clock_ns 3311 net/ipv4/tcp_output.c now = tcp_clock_ns();