svn commit: r223666 - in head: sbin/ipfw sys/netinet
sys/netinet/ipfw
Luigi Rizzo
rizzo at iet.unipi.it
Fri Jul 1 05:41:48 UTC 2011
On Thu, Jun 30, 2011 at 10:14:44PM -0700, Julian Elischer wrote:
> On 6/29/11 3:06 AM, Andrey V. Elsukov wrote:
> >Author: ae
> >Date: Wed Jun 29 10:06:58 2011
> >New Revision: 223666
> >URL: http://svn.freebsd.org/changeset/base/223666
> >
> >Log:
> > Add new rule actions "call" and "return" to ipfw. They make
> > possible to organize subroutines with rules.
> >
> > The "call" action saves the current rule number in the internal
> > stack and rules processing continues from the first rule with
> > specified number (similar to skipto action). If later a rule with
> > "return" action is encountered, the processing returns to the first
> > rule with number of "call" rule saved in the stack plus one or higher.
> >
> > Submitted by: Vadim Goncharov
> > Discussed by: ipfw@, luigi@
> >
> >Modified:
> what happens if the return target is removed in the meanwhile?
i suppose it has the same vulnerability of skipto: if the target
goes away you continue from the next rule.
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