[Olsr-dev] Problem with compile olsrd on SDK AirmaxOS

[Ferry Huberts]

@Conrad:

This means that the only thing you have to do is to upgrade your kernel 
to at least 2.4.21 and you can use IPV6_V6ONLY


On 10/11/14 14:56, Ferry Huberts wrote:
>
>
> On 10/11/14 14:03, Henning Rogge wrote:
>> The patches look reasonable, they should not be a problem with the
>> current kernels.
>>
>> Ferry, do you see a problem with these changes?
>
>
> mmm, I guess I do.
> Didn't we already have some kernel version detection somewhere?
> I'd rather use something like that.
>
> Ah, found it, see olsrd_conf.c line 544 for an example:
>
>> #if !defined LINUX_VERSION_CODE || !defined KERNEL_VERSION
>> #error "Both LINUX_VERSION_CODE and KERNEL_VERSION need to be defined"
>> #else /* !defined LINUX_VERSION_CODE || !defined KERNEL_VERSION */
>> #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
>>   if (cnf->ip_version == AF_INET6 && cnf->smart_gw_active) {
>>     fprintf(stderr, "Smart gateways are not supported for linux kernel
>> < 2.6.24 and ipv6\n");
>>     return -1;
>>   }
>> #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24) */
>
>
>
> According to 'man 7 ipv6':
>
>>       IPV6_V6ONLY (since Linux 2.4.21 and 2.6)
>>               If  this flag is set to true (nonzero), then the socket
>> is restricted to sending and receiving IPv6 packets only.  In this
>>               case, an IPv4 and an IPv6 application can bind to a
>> single port at the same time.
>>
>>               If this flag is set to false (zero), then the socket can
>> be used to send and receive packets to and from an  IPv6  address
>>               or an IPv4-mapped IPv6 address.
>>
>>               The argument is a pointer to a boolean value in an integer.
>>
>>               The  default  value for this flag is defined by the
>> contents of the file /proc/sys/net/ipv6/bindv6only.  The default value
>>               for that file is 0 (false).
>
>
>
>
>>
>> Hennig
>>
>> On Mon, Nov 10, 2014 at 1:56 PM, Waldek SPdwaONG <(spam-protected)>
>> wrote:
>>> Hi,
>>>
>>> One big problem for old devices UBNT like NS2 (not NS Mx models)
>>> where we
>>> use AirMAX OS SDK which have kernel 2.4.x and if we want to use
>>> latest olsr
>>> we have problem with compile (but after apply patch now OK).
>>> I have try use OpenWRT Attitude Adjustment on NS2 but is is not
>>> enough space
>>> to load olsrd with plugins and  it is very slow WEB interface compare to
>>> original AirMAX OS. One way with NS2 NS5 etc UBNT is use Backfire
>>> 10.03.1
>>> but WEB interface is slowly to compare AirMAX OS for this reason we
>>> can only
>>> use AirMAX SDK with kernel 2.4 or Backfire OpenWRT.
>>> This patch is necessary for unix/iface.c
>>> and lib/txtinfo/src/olsrd_txtinfo.c,
>>> lib/jsoninfo/src/olsrd_jsoninfo.c to
>>> problem with "IPV6_V6ONLY"
>>>
>>> I have apply (it is work but I am not sure that iti is correct place):
>>>
>>> #if defined linux
>>>      if (jsoninfo_ipv6_only && olsr_cnf->ip_version == AF_INET6) {
>>> #ifdef IPV6_V6ONLY
>>>        if (setsockopt(ipc_socket, IPPROTO_IPV6, IPV6_V6ONLY, (char
>>> *)&yes,
>>> sizeof(yes)) < 0) {
>>>          perror("IPV6_V6ONLY failed");
>>>          return 0;
>>>        }
>>> #endif
>>>      }
>>> #endif /* defined linux */
>>>      /* Bind the socket */
>>>
>>> and for olsrd_txtinfo.c
>>>
>>> #if defined linux
>>>      if (txtinfo_ipv6_only && olsr_cnf->ip_version == AF_INET6) {
>>> #ifdef IPV6_V6ONLY
>>>        if (setsockopt(ipc_socket, IPPROTO_IPV6, IPV6_V6ONLY, (char
>>> *)&yes,
>>> sizeof(yes)) < 0) {
>>>          perror("IPV6_V6ONLY failed");
>>>          return 0;
>>>        }
>>> #endif
>>>      }
>>> #endif /* defined linux */
>>>      /* Bind the socket */
>>>
>>>
>>> 2014-11-10 10:11 GMT+01:00 Henning Rogge <(spam-protected)>:
>>>>
>>>> On Sun, Nov 9, 2014 at 9:07 PM,  <(spam-protected)> wrote:
>>>>> Sorry for asking this but I have use (and others ) Nanostation 2 which
>>>>> we
>>>>> can use only old kernel 2.4.x.
>>>>
>>>> I think OpenWRT Attitude Adjustment should run on a 4MB flash device.
>>>>
>>>> In fact I have used kernel 2.6 on the original (pre 802.11n) Ubiquiti
>>>> hardware.
>>>>
>>>> What do you think of a deal... you start looking for the places where
>>>> you get errors (and eliminate them by commenting them out) and post
>>>> them here and I look if we can do an easy patch for them that wont
>>>> break too much for you.
>>>>
>>>> Henning Rogge
>>>>
>>>
>>>
>>>
>>> --
>>> Waldek sp2ong
>

-- 
Ferry Huberts