File-copy from v4.4.100

This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Please refer to that tree for all history prior to this point.

Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/include/uapi/linux/netrom.h b/include/uapi/linux/netrom.h
new file mode 100644
index 0000000..af7313c
--- /dev/null
+++ b/include/uapi/linux/netrom.h
@@ -0,0 +1,36 @@
+/*
+ * These are the public elements of the Linux kernel NET/ROM implementation.
+ * For kernel AX.25 see the file ax25.h. This file requires ax25.h for the
+ * definition of the ax25_address structure.
+ */
+
+#ifndef	NETROM_KERNEL_H
+#define	NETROM_KERNEL_H
+
+#include <linux/ax25.h>
+
+#define NETROM_MTU	236
+
+#define NETROM_T1	1
+#define NETROM_T2	2
+#define NETROM_N2	3
+#define	NETROM_T4	6
+#define	NETROM_IDLE	7
+
+#define	SIOCNRDECOBS		(SIOCPROTOPRIVATE+2)
+
+struct nr_route_struct {
+#define	NETROM_NEIGH	0
+#define	NETROM_NODE	1
+	int		type;
+	ax25_address	callsign;
+	char		device[16];
+	unsigned int	quality;
+	char		mnemonic[7];
+	ax25_address	neighbour;
+	unsigned int	obs_count;
+	unsigned int	ndigis;
+	ax25_address	digipeaters[AX25_MAX_DIGIS];
+};
+
+#endif