1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index 6d61602208c1..35f195329fdd 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -46,6 +46,7 @@
 #include <linux/stddef.h>
 #include <linux/device.h>
 #include <linux/mutex.h>
+#include <linux/slab.h>
 #include <net/slhc_vj.h>
 #include <asm/atomic.h>
 
@@ -2163,6 +2164,24 @@ int ppp_unit_number(struct ppp_channel *chan)
 }
 
 /*
+ * Return the PPP device interface name of a channel.
+ */
+char *ppp_dev_name(struct ppp_channel *chan)
+{
+        struct channel *pch = chan->ppp;
+        char *name = NULL;
+
+        if (pch) {
+                read_lock_bh(&pch->upl);
+                if (pch->ppp && pch->ppp->dev)
+                        name = pch->ppp->dev->name;
+                read_unlock_bh(&pch->upl);
+        }
+        return name;
+}
+
+
+/*
  * Disconnect a channel from the generic layer.
  * This must be called in process context.
  */
@@ -2890,6 +2909,7 @@ EXPORT_SYMBOL(ppp_register_channel);
 EXPORT_SYMBOL(ppp_unregister_channel);
 EXPORT_SYMBOL(ppp_channel_index);
 EXPORT_SYMBOL(ppp_unit_number);
+EXPORT_SYMBOL(ppp_dev_name);
 EXPORT_SYMBOL(ppp_input);
 EXPORT_SYMBOL(ppp_input_error);
 EXPORT_SYMBOL(ppp_output_wakeup);