Read net/ipv4/tcp_timer.c to figure out where and how the tcp_ probe_timer() is hooked. Is it directly hooked on a time_list structure just as tcp_keepalive_timer() ? Modify and compile the preceding...

Read net/ipv4/tcp_timer.c to figure out where and how the tcp_ probe_timer() is hooked. Is it directly hooked on a time_list structure just as tcp_keepalive_timer() ?

Modify and compile the preceding example to dump the fields of the MAC header into a file and identify the transport protocol for each received packet. Note that you need to have the root privilege for the machine to run this.