nat: Implement a post-routing for the NAT software
* The post-routing is applied after the first re-writing. To do this
the new number is copied back into the called data structure.
* Add a testcase that goes from 0172 to 0049 and then back to 0049
using the post rule with a table lookup.
diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat_utils.c b/openbsc/src/osmo-bsc_nat/bsc_nat_utils.c
index 45c224c..bc8c4c1 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_nat_utils.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_nat_utils.c
@@ -96,6 +96,7 @@
INIT_LLIST_HEAD(&nat->access_lists);
INIT_LLIST_HEAD(&nat->dests);
INIT_LLIST_HEAD(&nat->num_rewr);
+ INIT_LLIST_HEAD(&nat->num_rewr_post);
INIT_LLIST_HEAD(&nat->smsc_rewr);
INIT_LLIST_HEAD(&nat->tpdest_match);
INIT_LLIST_HEAD(&nat->sms_clear_tp_srr);