From b7bb9e691d29f31d35fe866068ba3cf16e2ef338 Mon Sep 17 00:00:00 2001
From: Richard Braun <rbraun@sceen.net>
Date: Sun, 2 Sep 2018 17:04:24 +0200
Subject: mbuf: add the mbuf_avail_size function

---
 src/mbuf.c | 6 ++++++
 src/mbuf.h | 5 +++++
 2 files changed, 11 insertions(+)

diff --git a/src/mbuf.c b/src/mbuf.c
index a6cfc7f..f2813c6 100644
--- a/src/mbuf.c
+++ b/src/mbuf.c
@@ -164,3 +164,9 @@ out:
     *sizep = size;
     return error;
 }
+
+size_t
+mbuf_avail_size(const struct mbuf *mbuf)
+{
+    return cbuf_avail_size(&mbuf->cbuf);
+}
diff --git a/src/mbuf.h b/src/mbuf.h
index f1464c7..458b52a 100644
--- a/src/mbuf.h
+++ b/src/mbuf.h
@@ -84,4 +84,9 @@ int mbuf_push(struct mbuf *mbuf, const void *buf, size_t size, bool erase);
  */
 int mbuf_pop(struct mbuf *mbuf, void *buf, size_t *sizep);
 
+/*
+ * Get the number of availabe bytes in a message buffer.
+ */
+size_t mbuf_avail_size(const struct mbuf *mbuf);
+
 #endif /* MBUF_H */
-- 
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