X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=include%2Fnet%2Fppp_str.h;h=c2ee6c1ff78605b75c4817d3bd5e5f7f279ceba1;hp=dacea495ee7b7e8e4d24ef39923f75f91cf10aa5;hb=1acc38d1a82052c4dd967991622e9adc84f9a311;hpb=0ae17bd9d21166d8274d4b4da594d05efd0ae87d diff --git a/include/net/ppp_str.h b/include/net/ppp_str.h index dacea49..c2ee6c1 100644 --- a/include/net/ppp_str.h +++ b/include/net/ppp_str.h @@ -1,49 +1,108 @@ /* 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 +#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 @@ -55,15 +114,16 @@ struct ppp_if_info { 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 */