Initial revision

[ppp.git] / include / net / ppp_str.h

diff --git a/include/net/ppp_str.h b/include/net/ppp_str.h
index e468b4bd230bed68121aac79ff9db495a04b653e..c2ee6c1ff78605b75c4817d3bd5e5f7f279ceba1 100644 (file)
--- a/include/net/ppp_str.h
+++ b/include/net/ppp_str.h
@@ -1,14 +1,50 @@
 /*
   ppp_str.h - streams version include file
 
-  defines ioctl calls for MRU, COMPPROT and ASYNCMAP
-
   Copyright (C) 1990 Brad K. Clements, All Rights Reserved,
   See copyright statement in NOTES
 */
 
 #include       <sys/ioccom.h>
 
+#define PPP_HDRLEN     4       /* octets for standard ppp header */
+#define PPP_FCSLEN     2       /* octets for FCS */
+
+#define PPP_ADDRESS(cp)                ((cp)[0])
+#define PPP_CONTROL(cp)                ((cp)[1])
+#define PPP_PROTOCOL(cp)       (((cp)[2] << 8) + (cp)[3])
+
+#define        PPP_ALLSTATIONS 0xff    /* All-Stations broadcast address */
+#define        PPP_UI          0x03    /* Unnumbered Information */
+#define        PPP_FLAG        0x7e    /* Flag Sequence */
+#define        PPP_ESCAPE      0x7d    /* Asynchronous Control Escape */
+#define        PPP_TRANS       0x20    /* Asynchronous transparency modifier */
+
+/*
+ * Protocol field values.
+ */
+#define PPP_IP         0x21    /* Internet Protocol */
+#define        PPP_XNS         0x25    /* Xerox NS */
+#define        PPP_VJC_COMP    0x2d    /* VJ compressed TCP */
+#define        PPP_VJC_UNCOMP  0x2f    /* VJ uncompressed TCP */
+#define PPP_COMP       0xfd    /* compressed packet */
+#define PPP_LCP                0xc021  /* Link Control Protocol */
+#define PPP_CCP                0x80fd  /* Compression Control Protocol */
+
+/*
+ * Important FCS values.
+ */
+#define PPP_INITFCS    0xffff  /* Initial FCS value */
+#define PPP_GOODFCS    0xf0b8  /* Good final FCS value */
+#define PPP_FCS(fcs, c)        (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
+
+/*
+ * Packet sizes
+ */
+#define        PPP_MTU         1500    /* Default MTU (size of Info field) */
+#define PPP_MRU                1500    /* Default MRU (max receive unit) */
+#define PPP_MAXMRU     65000   /* Largest MRU we allow */
+
 /* Extended asyncmap - allows any character to be escaped. */
 typedef u_long ext_accm[8];
 
@@ -82,11 +118,12 @@ struct     ppp_if_info {
 #endif
 };
 
-#ifdef        STREAMS
 /* defines for streams modules */
 #define       IF_INPUT_ERROR  0xe1
 #define       IF_OUTPUT_ERROR 0xe2
 
 #define       ALLOCBSIZE      64              /* how big of a buffer block to
 allocate for each chunk of the input chain */
-#endif
+
+#define        PPP_MTU         1500    /* Default MTU (size of Info field) */
+#define PPP_HDRLEN     4       /* sizeof(struct ppp_header) must be 4 */