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

[Ferry Huberts]

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