X-Git-Url: https://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=include%2Fnet%2Fif_ppp.h;h=91205540959fa8ee2d469e2ea4b44f8091647374;hp=e5197397363bb2116c8c1e54f5cf43cc4dbf3420;hb=9faea8a8533fe693a25a2bec728c969099809ab7;hpb=0ae17bd9d21166d8274d4b4da594d05efd0ae87d diff --git a/include/net/if_ppp.h b/include/net/if_ppp.h index e519739..9120554 100644 --- a/include/net/if_ppp.h +++ b/include/net/if_ppp.h @@ -16,15 +16,11 @@ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. * - * Modified by Paul Mackerras (paulus@cs.anu.edu.au) - * Added PPP_MRU, sc_outm, sc_fastq, sc_bpf. - * - * if_ppp.h,v 1.2 1993/08/31 00:05:31 paulus Exp + * $Id: if_ppp.h,v 1.5 1994/09/16 01:54:06 paulus Exp $ */ -/* Portions Copyright (C) 1990 Brad K. Clements (streams support) - (huh? there isn't any streams support in this file) -*/ +#ifndef _IF_PPP_H_ +#define _IF_PPP_H_ /* * Standard PPP header. @@ -35,9 +31,16 @@ struct ppp_header { u_short ph_protocol; /* Protocol Field */ }; -#define PPP_HEADER_LEN 4 /* octets, must == sizeof(struct ppp_header) */ -#define PPP_FCS_LEN 2 /* octets for FCS */ +#define PPP_HDRLEN 4 /* sizeof(struct ppp_header) must be 4 */ +#define PPP_FCSLEN 2 /* octets for FCS */ + +#define PPP_ADDRESS(p) (((u_char *)(p))[0]) +#define PPP_CONTROL(p) (((u_char *)(p))[1]) +#define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3]) +/* + * Significant octet values. + */ #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ #define PPP_UI 0x03 /* Unnumbered Information */ #define PPP_FLAG 0x7e /* Flag Sequence */ @@ -45,13 +48,15 @@ struct ppp_header { #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ /* - * Protocol types. + * 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. @@ -60,33 +65,69 @@ struct ppp_header { #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 */ -#define PPP_HIWAT 400 /* Don't start a new packet if HIWAT on que */ +/* Extended asyncmap - allows any character to be escaped. */ +typedef u_long ext_accm[8]; + +/* + * What to do with network protocol (NP) packets. + */ +enum NPmode { + NPMODE_PASS, /* pass the packet through */ + NPMODE_DROP, /* silently drop the packet */ + NPMODE_ERROR, /* return an error */ + NPMODE_QUEUE /* save it up for later. */ +}; + +/* + * Supported network protocols. These values are used for + * indexing sc_npmode. + */ +#define NP_IP 0 /* Internet Protocol */ +#define NUM_NP 1 /* Number of NPs. */ + +/* + * Structure describing each ppp unit. + */ struct ppp_softc { - struct ifnet sc_if; /* network-visible interface */ - u_int sc_flags; /* see below */ - struct tty *sc_ttyp; /* pointer to tty structure */ - struct mbuf *sc_outm; /* mbuf chain being output currently */ - struct mbuf *sc_m; /* pointer to input mbuf chain */ - struct mbuf *sc_mc; /* pointer to current input mbuf */ - char *sc_mp; /* pointer to next char in input mbuf */ - short sc_ilen; /* length of input-packet-so-far */ - u_short sc_fcs; /* FCS so far (input) */ - u_short sc_outfcs; /* FCS so far for output packet */ - short sc_mru; /* max receive unit */ - u_long sc_asyncmap; /* async control character map */ - u_long sc_rasyncmap; /* receive async control char map */ - struct ifqueue sc_inq; /* TTY side input queue */ - struct ifqueue sc_fastq; /* IP interactive output packet queue */ + struct ifnet sc_if; /* network-visible interface */ + u_int sc_flags; /* see below */ + void *sc_devp; /* pointer to device-dep structure */ + int (*sc_start)(); /* start routine */ + short sc_mru; /* max receive unit */ + pid_t sc_xfer; /* used in transferring unit */ + struct ifqueue sc_inq; /* TTY side input queue */ + struct ifqueue sc_fastq; /* IP interactive output packet q */ #ifdef VJC - struct slcompress sc_comp; /* vjc control buffer */ + struct slcompress sc_comp; /* vjc control buffer */ #endif - u_int sc_bytessent; - u_int sc_bytesrcvd; - caddr_t sc_bpf; + u_int sc_bytessent; /* count of octets sent */ + u_int sc_bytesrcvd; /* count of octets received */ + caddr_t sc_bpf; /* hook for BPF */ + enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */ + struct compressor *sc_xcomp; /* transmit compressor */ + void *sc_xc_state; /* transmit compressor state */ + struct compressor *sc_rcomp; /* receive decompressor */ + void *sc_rc_state; /* receive decompressor state */ + + /* Device-dependent part for async lines. */ + ext_accm sc_asyncmap; /* async control character map */ + u_long sc_rasyncmap; /* receive async control char map */ + struct mbuf *sc_outm; /* mbuf chain currently being output */ + struct mbuf *sc_m; /* pointer to input mbuf chain */ + struct mbuf *sc_mc; /* pointer to current input mbuf */ + char *sc_mp; /* ptr to next char in input mbuf */ + short sc_ilen; /* length of input packet so far */ + u_short sc_fcs; /* FCS so far (input) */ + u_short sc_outfcs; /* FCS so far for output packet */ + u_char sc_rawin[16]; /* chars as received */ + int sc_rawin_count; /* # in sc_rawin */ }; /* flags */ @@ -96,13 +137,44 @@ struct ppp_softc { #define SC_NO_TCP_CCID 0x00000008 /* disable VJ connection-id comp. */ #define SC_REJ_COMP_AC 0x00000010 /* reject adrs/ctrl comp. on input */ #define SC_REJ_COMP_TCP 0x00000020 /* reject TCP (VJ) comp. on input */ -#define SC_MASK 0x0000ffff /* bits that user can change */ +#define SC_CCP_OPEN 0x00000040 /* Look at CCP packets */ +#define SC_CCP_UP 0x00000080 /* May send/recv compressed packets */ +#define SC_ENABLE_IP 0x00000100 /* IP packets may be exchanged */ +#define SC_COMP_RUN 0x00001000 /* compressor has been inited */ +#define SC_DECOMP_RUN 0x00002000 /* decompressor has been inited */ +#define SC_DEBUG 0x00010000 /* enable debug messages */ +#define SC_LOG_INPKT 0x00020000 /* log contents of good pkts recvd */ +#define SC_LOG_OUTPKT 0x00040000 /* log contents of pkts sent */ +#define SC_LOG_RAWIN 0x00080000 /* log all chars received */ +#define SC_LOG_FLUSH 0x00100000 /* log all chars flushed */ +#define SC_MASK 0x0fffffff /* bits that user can change */ /* state bits */ -#define SC_ESCAPED 0x00010000 /* saw a PPP_ESCAPE */ -#define SC_FLUSH 0x00020000 /* flush input until next PPP_FLAG */ +#define SC_ESCAPED 0x80000000 /* saw a PPP_ESCAPE */ +#define SC_FLUSH 0x40000000 /* flush input until next PPP_FLAG */ +#define SC_VJ_RESET 0x20000000 /* Need to reset the VJ decompressor */ +#define SC_RCV_B7_0 0x01000000 /* have rcvd char with bit 7 = 0 */ +#define SC_RCV_B7_1 0x02000000 /* have rcvd char with bit 7 = 1 */ +#define SC_RCV_EVNP 0x04000000 /* have rcvd char with even parity */ +#define SC_RCV_ODDP 0x08000000 /* have rcvd char with odd parity */ +#define SC_DC_ERROR 0x00400000 /* non-fatal decomp error detected */ +#define SC_DC_FERROR 0x00800000 /* fatal decomp error detected */ + +/* + * Ioctl definitions. + */ + +struct npioctl { + int protocol; /* PPP procotol, e.g. PPP_IP */ + enum NPmode mode; +}; -#define t_sc T_LINEP +/* Structure describing a CCP configuration option, for PPPIOCSCOMPRESS */ +struct ppp_option_data { + u_char *ptr; + u_int length; + int transmit; +}; /* this stuff doesn't belong here... */ #define PPPIOCGFLAGS _IOR('t', 90, int) /* get configuration flags */ @@ -114,9 +186,20 @@ struct ppp_softc { #define PPPIOCSRASYNCMAP _IOW('t', 84, int) /* set receive async map */ #define PPPIOCGMRU _IOR('t', 83, int) /* get max receive unit */ #define PPPIOCSMRU _IOW('t', 82, int) /* set max receive unit */ +#define PPPIOCSMAXCID _IOW('t', 81, int) /* set VJ max slot ID */ +#define PPPIOCGXASYNCMAP _IOR('t', 80, ext_accm) /* get extended ACCM */ +#define PPPIOCSXASYNCMAP _IOW('t', 79, ext_accm) /* set extended ACCM */ +#define PPPIOCXFERUNIT _IO('t', 78) /* transfer PPP unit */ +#define PPPIOCSCOMPRESS _IOW('t', 77, struct ppp_option_data) +#define PPPIOCGNPMODE _IOWR('t', 76, struct npioctl) /* get NP mode */ +#define PPPIOCSNPMODE _IOW('t', 75, struct npioctl) /* set NP mode */ + +#ifdef ultrix +#define ifr_mtu ifr_ifru.ifru_metric +#endif -/* old copies of PPP may have defined this */ #if !defined(ifr_mtu) #define ifr_mtu ifr_metric #endif +#endif /* _IF_PPP_H_ */