libwimaxll: add wimaxll_ifidx() to report the interface index the handle refers to

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>

2 files changed, 21 insertions, 0 deletions

diff --git a/include/wimaxll.h b/include/wimaxll.h
index 5396c16..c2469f2 100644
--- a/include/wimaxll.h
+++ b/include/wimaxll.h
@@ -308,6 +308,7 @@ void *wimaxll_priv_get(struct wimaxll_handle *);
 void wimaxll_priv_set(struct wimaxll_handle *, void *);
 void wimaxll_close(struct wimaxll_handle *);
 const char *wimaxll_ifname(const struct wimaxll_handle *);
+unsigned wimaxll_ifidx(const struct wimaxll_handle *);
 
 /* Wait for data from the kernel, execute callbacks */
 int wimaxll_recv_fd(struct wimaxll_handle *);
diff --git a/lib/wimax.c b/lib/wimax.c
index d579d8c..83bc16e 100644
--- a/lib/wimax.c
+++ b/lib/wimax.c
@@ -272,6 +272,26 @@ const char *wimaxll_ifname(const struct wimaxll_handle *wmx)
 
 
 /**
+ * Return the interface index of the system's WiMAX interface
+ * associated to an open handle
+ *
+ * \param wmx WiMAX device handle
+ * \return Interface index
+ *
+ * Note that if this is an \e any interface (open for all devices),
+ * this will vary. When not processing a callback, it will be
+ * zero. When processing a callback, this call will return the
+ * interface for which the callback was executed.
+ *
+ * \ingroup device_management
+ */
+unsigned wimaxll_ifidx(const struct wimaxll_handle *wmx)
+{
+	return wmx->ifidx;
+}
+
+
+/**
  * Set the private data associated to a WiMAX device handle
  *
  * @param wmx WiMAX device handle