[CentOS] help please , How SYN and ACK packets counted by the server(centos)

Fri May 22 11:36:09 UTC 2015
Ibrahim Celikbilek <ibrahimcelikbilek at std.sehir.edu.tr>

I have a question about tcp layer of linux kernel. I want, Syn and ack
packages received to server will be counted.

[image: enter image description here]

where total_syn_count and total_ack_count are variables to be defined and
will be increased

Which files to be used ????

tcp_input.c ,tcp_output.c , tcp_ipv4.c