add msgb_l1() and msgb_l1len() inline functions
diff --git a/include/osmocore/msgb.h b/include/osmocore/msgb.h
index 7de242b..4f0c8c3 100644
--- a/include/osmocore/msgb.h
+++ b/include/osmocore/msgb.h
@@ -67,10 +67,16 @@
extern struct msgb *msgb_dequeue(struct llist_head *queue);
extern void msgb_reset(struct msgb *m);
+#define msgb_l1(m) ((void *)(m->l1h))
#define msgb_l2(m) ((void *)(m->l2h))
#define msgb_l3(m) ((void *)(m->l3h))
#define msgb_sms(m) ((void *)(m->smsh))
+static inline unsigned int msgb_l1len(const struct msgb *msgb)
+{
+ return msgb->tail - (uint8_t *)msgb_l1(msgb);
+}
+
static inline unsigned int msgb_l2len(const struct msgb *msgb)
{
return msgb->tail - (uint8_t *)msgb_l2(msgb);