08-14-2009
What i need is simply avoid the kernel's action in the cache when receiving an arp frame, i don't think i must disable the entire TCP/IP stack for that.
i've been reading arptables code, but there's nothing that could give me a clue... only that i need to code a lkm to access to the kernel space and kinda "intercept" the frames before the kernel does, but not HOW.
The question always is how...
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LEARN ABOUT CENTOS
trace-cmd-stack
TRACE-CMD-STACK(1) TRACE-CMD-STACK(1)
NAME
trace-cmd-stack - read, enable or disable Ftrace Linux kernel stack tracing.
SYNOPSIS
trace-cmd stack
DESCRIPTION
The trace-cmd(1) stack enables the Ftrace stack tracer within the kernel. The stack tracer enables the function tracer and at each function
call within the kernel, the stack is checked. When a new maximum usage stack is discovered, it is recorded.
When no option is used, the current stack is displayed.
To enable the stack tracer, use the option --start, and to disable the stack tracer, use the option --stop. The output will be the maximum
stack found since the start was enabled.
Use --reset to reset the stack counter to zero.
SEE ALSO
trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1),
trace-cmd-list(1), trace-cmd-listen(1)
AUTHOR
Written by Steven Rostedt, <rostedt@goodmis.org[1]>
RESOURCES
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git
COPYING
Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL).
NOTES
1. rostedt@goodmis.org
mailto:rostedt@goodmis.org
06/11/2014 TRACE-CMD-STACK(1)