See include/net/tcp.h in kernel tree. You can use "grep" tool for such things. For example grep -rwn MAX_TCP_HEADER /usr/src/linux | grep define Regards Mohanlal ----- Original Message ----- From: "bunty" <bunty123_4@rediffmail.com> To: <kernelnewbies@nl.linux.org> Sent: Monday, May 10, 2004 12:43 PM Subject: what is value of MAX_TCP_HEADER? hi, while studying kernel source i came across variable MAX_TCP_HEADER in tcp_output.c. but i am unable to figure out value of it. can anybody know it? regards, parag -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/