On Wednesday 2023-05-31 08:42, ValdikSS wrote:
> However, it's not getting processed due to nonlinear skb:
>
>> static bool
>> ipp2p_mt(const struct sk_buff *skb, struct xt_action_param *par)
>> /* make sure that skb is linear */
>> if (skb_is_nonlinear(skb)) {
>> if (info->debug)
>> printk("IPP2P.match: nonlinear skb found\n");
>> return 0;
>> }
It should be possible to just take the code from xt_ECHO and call
if (skb_linearize(skb) < 0)
return false;
However, none of the xtables matches in the Linux kernel do this linearization,
at least not that I can see directly. Or xt_string's call to skb_find_text is
magic..
