tcp_transmit_time 779 net/ipv4/tcp_ipv4.c transmit_time = tcp_transmit_time(sk); tcp_transmit_time 876 net/ipv4/tcp_ipv4.c transmit_time = tcp_transmit_time(sk); tcp_transmit_time 897 net/ipv6/tcp_ipv6.c buff->tstamp = tcp_transmit_time(sk);