/*
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];
+
#ifdef __STDC__
#define SIOCSIFCOMPAC _IOW('p', 130, char)
#define SIOCSIFCOMPPROT _IOW('p', 131, char)
-#define SIOCSIFMRU _IOW('p', 132, int)
-#define SIOCGIFMRU _IOR('p', 133, int)
-#define SIOCGIFASYNCMAP _IOR('p', 134, long)
-#define SIOCSIFASYNCMAP _IOW('p', 135, long)
+#define SIOCSIFMRU _IOW('p', 132, int) /* set max receive unit */
+#define SIOCGIFMRU _IOR('p', 133, int) /* get max receive unit */
+#define SIOCGIFASYNCMAP _IOR('p', 134, long) /* get transmit async map */
+#define SIOCSIFASYNCMAP _IOW('p', 135, long) /* set transmit async map */
#define SIOCGETU _IOR('p', 136, int) /* get unit number */
-#define SIOCSIFVJCOMP _IOW('p', 137, char) /* enable/disable VJ Compression */
+#define SIOCSIFVJCOMP _IOW('p', 137, char) /* enable/disable VJ comp */
#define SIOCGIFDEBUG _IOR('p', 138, int) /* get debug flags */
#define SIOCSIFDEBUG _IOW('p', 139, int) /* set debug flags */
+#define SIOCGIFRASYNCMAP _IOR('p', 140, long) /* get receive async map */
+#define SIOCSIFRASYNCMAP _IOW('p', 141, long) /* set receive async map */
+#define SIOCGIFXASYNCMAP _IOR('p', 142, ext_accm) /* get extended xmit map */
+#define SIOCSIFXASYNCMAP _IOW('p', 143, ext_accm) /* set extended xmit map */
#else
/* traditional C compiler */
#define SIOCSIFCOMPAC _IOW(p, 130, char)
#define SIOCSIFCOMPPROT _IOW(p, 131, char)
-#define SIOCSIFMRU _IOW(p, 132, int)
-#define SIOCGIFMRU _IOR(p, 133, int)
-#define SIOCGIFASYNCMAP _IOR(p, 134, long)
-#define SIOCSIFASYNCMAP _IOW(p, 135, long)
+#define SIOCSIFMRU _IOW(p, 132, int) /* set max receive unit */
+#define SIOCGIFMRU _IOR(p, 133, int) /* get max receive unit */
+#define SIOCGIFASYNCMAP _IOR(p, 134, long) /* get transmit async map */
+#define SIOCSIFASYNCMAP _IOW(p, 135, long) /* set transmit async map */
#define SIOCGETU _IOR(p, 136, int) /* get unit number */
-#define SIOCSIFVJCOMP _IOW(p, 137, char) /* enable/disable VJ Compression */
+#define SIOCSIFVJCOMP _IOW(p, 137, char) /* enable/disable VJ comp */
#define SIOCGIFDEBUG _IOR(p, 138, int) /* get debug flags */
#define SIOCSIFDEBUG _IOW(p, 139, int) /* set debug flags */
+#define SIOCGIFRASYNCMAP _IOR(p, 140, long) /* get receive async map */
+#define SIOCSIFRASYNCMAP _IOW(p, 141, long) /* set receive async map */
+#define SIOCGIFXASYNCMAP _IOR(p, 142, ext_accm) /* get extended xmit map */
+#define SIOCSIFXASYNCMAP _IOW(p, 143, ext_accm) /* set extended xmit map */
#endif
+/*
+ * Note on SIOCSIFVJCOMP: the parameter is now encoded as follows.
+ * Bit 0 = overall VJ enable, bit 1 = don't compress connection ID,
+ * bit 2 = receiver rejects VJ compression,
+ * bits 4--7 = maximum slot ID (0 => use default (15)).
+ */
+
+/*
+ * Structure used within the ppp_if streams module.
+ */
struct ppp_if_info {
- int pii_flags;
-#define PII_FLAGS_INUSE 0x1 /* in use by a stream */
-#define PII_FLAGS_COMPAC 0x2
-#define PII_FLAGS_COMPPROT 0x4
-#define PII_FLAGS_ATTACHED 0x8 /* already if_attached */
-#define PII_FLAGS_VJC_ON 0x10 /* VJ TCP header compression enabled */
- struct ifnet pii_ifnet;
- queue_t *pii_writeq; /* used by ppp_output */
+ int pii_flags;
+#define PII_FLAGS_INUSE 0x1 /* in use by a stream */
+#define PII_FLAGS_ATTACHED 0x8 /* already if_attached */
+#define PII_FLAGS_VJC_ON 0x10 /* VJ TCP header compression enabled */
+#define PII_FLAGS_VJC_NOCCID 0x20 /* VJ: don't compress conn. id */
+#define PII_FLAGS_VJC_REJ 0x40 /* receive: reject VJ comp */
+#define PII_FLAGS_DEBUG 0x80 /* enable debug printout */
+
+ struct ifnet pii_ifnet;
+ queue_t *pii_writeq; /* used by ppp_output */
#ifdef VJC
struct slcompress pii_sc_comp; /* vjc control buffer */
#endif
u_int ppp_obytes;
u_int ppp_opackets;
u_int ppp_oerrors;
- } pii_stats;
+ } pii_stats;
#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 */
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