20 Nov
2009
20 Nov
'09
4:25 p.m.
Hi Sylvain,
On Fri, Nov 20, 2009 at 03:11:33PM +0100, Sylvain Munaut wrote:
That was my first thought. But it's not set (or at least not always),
leading to a seg fault when I tried that. For examples packets send
with gprs_ns_tx_simple don't have it set. And I didn't see any clean way
to get it from where those were generated.
ok, we need to fix those. I understand that the NS layer does not know yet
which BTS has sent it. That's what the ns_link structure was intended for.
However, what makes probably even more sense is to identify the BTS based on
its source IP address in the input/ipaccess.c code. So for every packet we
receive, we iterate over all BTS's and compare the source IP address. If we
have a match, we assign msg->trx = bts->c0 and all higher layers have that
knowledge and can use it.
Regards,
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
+ /* FIXME: Just take the first ip.access bts we find
*/
+ llist_for_each_entry(bts, &e1h->gsmnet->bts_list, list) {
+ if (!is_ipaccess_bts(bts))
+ continue;
+ break;
msg->trx will be set, so you can simply dereference msg->trx->bts to get to the
bts to which this should be sent.