1 files changed, 33 insertions, 0 deletions

diff --git a/include/linux/hdlc/ioctl.h b/include/linux/hdlc/ioctl.h
index 78430ba3ea69..583972364357 100644
--- a/include/linux/hdlc/ioctl.h
+++ b/include/linux/hdlc/ioctl.h
@@ -1,6 +1,39 @@
 #ifndef __HDLC_IOCTL_H__
 #define __HDLC_IOCTL_H__
 
+
+#define GENERIC_HDLC_VERSION 4  /* For synchronization with sethdlc utility */
+
+#define CLOCK_DEFAULT   0       /* Default setting */
+#define CLOCK_EXT       1       /* External TX and RX clock - DTE */
+#define CLOCK_INT       2       /* Internal TX and RX clock - DCE */
+#define CLOCK_TXINT     3       /* Internal TX and external RX clock */
+#define CLOCK_TXFROMRX  4       /* TX clock derived from external RX clock */
+
+
+#define ENCODING_DEFAULT        0 /* Default setting */
+#define ENCODING_NRZ            1
+#define ENCODING_NRZI           2
+#define ENCODING_FM_MARK        3
+#define ENCODING_FM_SPACE       4
+#define ENCODING_MANCHESTER     5
+
+
+#define PARITY_DEFAULT          0 /* Default setting */
+#define PARITY_NONE             1 /* No parity */
+#define PARITY_CRC16_PR0        2 /* CRC16, initial value 0x0000 */
+#define PARITY_CRC16_PR1        3 /* CRC16, initial value 0xFFFF */
+#define PARITY_CRC16_PR0_CCITT  4 /* CRC16, initial 0x0000, ITU-T version */
+#define PARITY_CRC16_PR1_CCITT  5 /* CRC16, initial 0xFFFF, ITU-T version */
+#define PARITY_CRC32_PR0_CCITT  6 /* CRC32, initial value 0x00000000 */
+#define PARITY_CRC32_PR1_CCITT  7 /* CRC32, initial value 0xFFFFFFFF */
+
+#define LMI_DEFAULT             0 /* Default setting */
+#define LMI_NONE                1 /* No LMI, all PVCs are static */
+#define LMI_ANSI                2 /* ANSI Annex D */
+#define LMI_CCITT               3 /* ITU-T Annex A */
+#define LMI_CISCO               4 /* The "original" LMI, aka Gang of Four */
+
 typedef struct { 
         unsigned int clock_rate; /* bits per second */
         unsigned int clock_type; /* internal, external, TX-internal etc. */