Hello friends i'm trying to extend iptables to include a target by which we can change the packet type field of a packet.
For this i created a kernel module and a userspace extension.
Now i face the problem that when i try to invoke iptable with the target i created i get an error message saying that "no match/target/chain by that name" but when i do lsmod to show the modules that are loaded my kernel module is shown (that means it is loaded) i also went through userspace extension in iptables made by me but could not locate any problem.
only thing that i could locate was that the error message was coming from libiptc.c (here strange thing was that in libiptc.c in the function that printed error there was a structure which stored the function name where error originally occured, the error no. and msg. Now in my case the function name was shown as NULL so I can't figure out where the error is actually coming from.)
One more related problem, to debug above, in kernel module i gave some kernel messages (which i obviously thought that would be printed out some where as they will b reached) but i'm not able to figure out where that message is going. I checked system log in /var/log/messages but there i could just find one system message that the module has been loaded but not the customized message that i gave. Can someone help me out with that where is my message going.
Oh sorry! I forgot to tell my system description. I'm running redhat 9.0 (kernel 2.4.20) and using iptables 1.2.7a.