Hi Jan,
Simplifying my iptables private struct in ipt_CSUM.h down to
struct ipt_CSUM_info {
u_int32_t count;
};
and calculating .size .userspacesize (in libiptCSUM.c) and .targetsize
(in ipt_CSUM.c) all with IPT_ALIGN(sizeof(struct ipt_CSUM_info) gives
me an error stating:
iptables: CSUM target: invalid size 12 != 4
In what way should I be creating this struct so that it aligns
correctly in user and kernel space?
Thanks again,
Kevin
On Tue, Jul 15, 2008 at 10:52 AM, Jan Engelhardt <jengelh@xxxxxxxxxx> wrote:
>
> On Tuesday 2008-07-15 14:47, Kevin Sookocheff wrote:
>
> >Great, that worked wonderfully!
> >
> >So, just out of curiosity and for completeness, do you know why this
> >error would present itself only on SMP kernels? I'm presuming it has
> >something to do with what version of IPTables is compiled in the
> >kernel.
>
> The kernel-level iptables component has no version number (it uses
> the kernel version). For best interoperability (and chance to get an
> answer to a bugreport), 2.6.18 or any kernel more recent than that,
> specifically its latest stable versions, and userspace
> iptables >= 1.4.1.1 are strongly recommended.
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