Date: Wed, 28 Mar 2001 05:38:17 -0800 From: Julian Elischer <julian@elischer.org> To: s2209866@cse.unsw.edu.au Cc: FreeBSD <freebsd-questions@freeBSD.org>, freebsd-net@freeBSD.ORG Subject: Re: What do I have to change to add a sysctl ? Message-ID: <3AC1E949.C9410FE@elischer.org> References: <NDBBJCEECLLLJHEBJOGDMEOIEMAA.s2209866@cse.unsw.edu.au>
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Daniel Wong wrote:
>
> Hi All,
>
> I want to add a sysctl to the net.inet.ip what do I have to change ??
That depends upon what you are doing...
if you have your own module, you can add line of the form:
#include <sys/sysctl.h>
myinteger = 0;
SYSCTL_INT(_net_inet_ip, IPCTL_FORWARDING, Mycutename, CTLFLAG_RW,
&myinterger, 0, "Description of my cute new feature");
There are many alternative variations depending upon whether
you want some code to be run when you set a new value, or
whether you want to set a string, an integer or a char (etc.).
If you just want to instrument existing code,
then add the above lines into existing files :-)
>
> Thanks
> Dan
>
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