1 files changed, 93 insertions, 0 deletions

diff --git a/include/uapi/linux/ppp-comp.h b/include/uapi/linux/ppp-comp.h
new file mode 100644
index 000000000000..0a15bbb04e19
--- /dev/null
+++ b/include/uapi/linux/ppp-comp.h
@@ -0,0 +1,93 @@
+/*
+ * ppp-comp.h - Definitions for doing PPP packet compression.
+ *
+ * Copyright 1994-1998 Paul Mackerras.
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  version 2 as published by the Free Software Foundation.
+ */
+#ifndef _UAPI_NET_PPP_COMP_H
+#define _UAPI_NET_PPP_COMP_H
+
+
+/*
+ * CCP codes.
+ */
+
+#define CCP_CONFREQ     1
+#define CCP_CONFACK     2
+#define CCP_TERMREQ     5
+#define CCP_TERMACK     6
+#define CCP_RESETREQ    14
+#define CCP_RESETACK    15
+
+/*
+ * Max # bytes for a CCP option
+ */
+
+#define CCP_MAX_OPTION_LENGTH   32
+
+/*
+ * Parts of a CCP packet.
+ */
+
+#define CCP_CODE(dp)            ((dp)[0])
+#define CCP_ID(dp)              ((dp)[1])
+#define CCP_LENGTH(dp)          (((dp)[2] << 8) + (dp)[3])
+#define CCP_HDRLEN              4
+
+#define CCP_OPT_CODE(dp)        ((dp)[0])
+#define CCP_OPT_LENGTH(dp)      ((dp)[1])
+#define CCP_OPT_MINLEN          2
+
+/*
+ * Definitions for BSD-Compress.
+ */
+
+#define CI_BSD_COMPRESS         21      /* config. option for BSD-Compress */
+#define CILEN_BSD_COMPRESS      3       /* length of config. option */
+
+/* Macros for handling the 3rd byte of the BSD-Compress config option. */
+#define BSD_NBITS(x)            ((x) & 0x1F)    /* number of bits requested */
+#define BSD_VERSION(x)          ((x) >> 5)      /* version of option format */
+#define BSD_CURRENT_VERSION     1               /* current version number */
+#define BSD_MAKE_OPT(v, n)      (((v) << 5) | (n))
+
+#define BSD_MIN_BITS            9       /* smallest code size supported */
+#define BSD_MAX_BITS            15      /* largest code size supported */
+
+/*
+ * Definitions for Deflate.
+ */
+
+#define CI_DEFLATE              26      /* config option for Deflate */
+#define CI_DEFLATE_DRAFT        24      /* value used in original draft RFC */
+#define CILEN_DEFLATE           4       /* length of its config option */
+
+#define DEFLATE_MIN_SIZE        9
+#define DEFLATE_MAX_SIZE        15
+#define DEFLATE_METHOD_VAL      8
+#define DEFLATE_SIZE(x)         (((x) >> 4) + 8)
+#define DEFLATE_METHOD(x)       ((x) & 0x0F)
+#define DEFLATE_MAKE_OPT(w)     ((((w) - 8) << 4) + DEFLATE_METHOD_VAL)
+#define DEFLATE_CHK_SEQUENCE    0
+
+/*
+ * Definitions for MPPE.
+ */
+
+#define CI_MPPE                18      /* config option for MPPE */
+#define CILEN_MPPE              6      /* length of config option */
+
+/*
+ * Definitions for other, as yet unsupported, compression methods.
+ */
+
+#define CI_PREDICTOR_1          1       /* config option for Predictor-1 */
+#define CILEN_PREDICTOR_1       2       /* length of its config option */
+#define CI_PREDICTOR_2          2       /* config option for Predictor-2 */
+#define CILEN_PREDICTOR_2       2       /* length of its config option */
+
+
+#endif /* _UAPI_NET_PPP_COMP_H */