msgb: add ->dst attribute to store routing information
This patch adds a new attribute to msgb objects. This new
attribute will store a pointer to the routing information,
in the case of the A-bis link, this will be used to store
e1inp_sign_link instead of struct gsm_bts_trx.
This deprecates msg->trx, that can be removed once all
application are ported to use msg->dst.
diff --git a/include/osmocom/core/msgb.h b/include/osmocom/core/msgb.h
index 58976f7..08dfaac 100644
--- a/include/osmocom/core/msgb.h
+++ b/include/osmocom/core/msgb.h
@@ -29,6 +29,9 @@
struct msgb {
struct llist_head list;
+ /* routing information. */
+ void *dst;
+
/* Part of which TRX logical channel we were received / transmitted */
/* FIXME: move them into the control buffer */
struct gsm_bts_trx *trx;