msgb: introduce msgb->cb (the control buffer)
diff --git a/include/osmocore/msgb.h b/include/osmocore/msgb.h
index 61c224f..2841dc5 100644
--- a/include/osmocore/msgb.h
+++ b/include/osmocore/msgb.h
@@ -27,6 +27,7 @@
struct llist_head list;
/* Part of which TRX logical channel we were received / transmitted */
+ /* FIXME: move them into the control buffer */
struct gsm_bts_trx *trx;
struct gsm_lchan *lchan;
@@ -39,6 +40,9 @@
/* the layer 4 header */
unsigned char *l4h;
+ /* the 'control buffer', large enough to contain 5 pointers */
+ unsigned long cb[5];
+
uint16_t data_len;
uint16_t len;