About 'sysctl' routine problem?

[ouyang kai]

Hi guys,   In the "TCP/IP Illustrated, Volume2: The Implementation" book, there give 'ioctl' and 'sysctl' in the kernel routine.   ioctl -> sooioctl->(interface)ifioctl.....   sysctl-> net_sysctl -> pr_sysctl -> ip_sysctl....   Now, I can find the corresponding code about 'ioctl' routine. But, I could not find any code about 'sysctl', why? how the FreeBSD realize the corresponding functions?    Thank you!   Best Regards Ouyang Kai   Get more from the Web. FREE MSN Explorer download : http://explorer.msn.com