Re: v4.1.30 notes and a problem on Linux 2.6 x86_64

You are right and I should have seen that (byte ordering issue). How to fix it?

- Ashwani



On Mon, May 4, 2009 at 11:50 PM, Darren Reed <[email protected]> wrote:
> Version is 5... and I bet ip_hl is 4?
>
> Darren
>
> Ashwani Wason wrote:
>> BTW, the version number that shows up in the packets is 5 :)
>>
>> - Ashwani
>>
>>
>>
>> On Mon, May 4, 2009 at 9:07 AM, Ashwani Wason <[email protected]> wrote:
>>
>>> Darren,
>>>
>>> Using the good old-fashioned printf-based debugging "technique", the
>>> problem seems to be that the I/O netfilter hook callback in
>>> ip_fil_linux.c is unable to recognize the packet version:
>>>
>>>        sk = *skbp;
>>>        ip = MTOD(sk, ip_t *);
>>>        if (ip->ip_v == 4) {
>>>                hlen = ip->ip_hl << 2;
>>>                ip->ip_len = ntohs(ip->ip_len);
>>>                ip->ip_off = ntohs(ip->ip_off);
>>> #ifdef USE_INET6
>>>        } else if (ip->ip_v == 6) {
>>>                hlen = sizeof(ip6_t);
>>> #endif
>>>        } else {
>>>                printk("Dropping unknown IP version packet.\n");
>>>                return NF_DROP;
>>>        }
>>>
>>> I see the "Dropping unknown IP version packet" message pop-up for
>>> every incoming/outgoing packet. This is so basic that any general
>>> problem would have been caught in your testing - I am not sure if it
>>> is related to 32-bit/64-bit. (Not sure if you test IP filter in 64-bit
>>> mode on Linux.)
>>>
>>> - Ashwani
>>>
>>>
>>>
>>> On Fri, May 1, 2009 at 11:10 AM, Ashwani Wason <[email protected]> wrote:
>>>
>>>> Filed bug 2785189.
>>>>
>>>> - Ashwani
>>>>
>>>>
>>>>
>>>> On Fri, May 1, 2009 at 10:28 AM, Darren Reed <[email protected]> wrote:
>>>>
>>>>> Please make sure any bugs/issues/problems are recorded in source forge
>>>>> so that they can be tracked appropriately:
>>>>>
>>>>> https://sourceforge.net/tracker/?group_id=169098&atid=849053
>>>>>
>>>>> Darren
>>>>>
>>>>>
>>>>>
>>>>>
>>
>>
>
>