if_ppp.h
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上传用户:luoyougen
上传日期:2008-05-12
资源大小:23136k
文件大小:8k
源码类别:
VxWorks
开发平台:
C/C++
- /* if_ppp.h - Point-to-Point Protocol (PPP) Asynchronous driver header */
- /* Copyright 1995 Wind River Systems, Inc. */
- /*
- * Copyright (c) 1989 Carnegie Mellon University.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by Carnegie Mellon University. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
- /*
- modification history
- --------------------
- 01b,09mar95,dzb ppp_softc: added sc_iprcvd/sc_ipsent and removed bpf.
- 01a,16jan95,dab VxWorks port - first WRS version.
- +dzb WRS-ize. moved in global prototypes from if_ppp.c.
- */
- #ifndef __INCif_ppph
- #define __INCif_ppph
- #ifdef __cplusplus
- extern "C" {
- #endif
- /* includes */
- #include "private/semLibP.h"
- #include "rngLib.h"
- #include "netinet/sl_compress.h"
- /*
- * Standard PPP header.
- */
- struct ppp_header {
- u_char ph_address; /* Address Field */
- u_char ph_control; /* Control Field */
- u_short ph_protocol; /* Protocol Field */
- };
- #define PPP_HDRLEN 4 /* sizeof(struct ppp_header) must be 4 */
- #define PPP_FCSLEN 2 /* octets for FCS */
- #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];
- /*
- * Structure describing each ppp unit.
- */
- struct ppp_softc {
- struct ifnet sc_if; /* network-visible interface */
- u_int sc_flags; /* see below */
- void *sc_devp; /* pointer to device-dependent structure */
- int (*sc_start)(); /* start routine */
- short sc_mru; /* max receive unit */
- int sc_xfer; /* used in xferring unit to another dev */
- struct ifqueue sc_inq; /* TTY side input queue */
- struct ifqueue sc_fastq; /* IP interactive output packet queue */
- #ifdef VJC
- struct slcompress sc_comp; /* vjc control buffer */
- #endif
- u_int sc_bytessent; /* count of octets sent */
- u_int sc_bytesrcvd; /* count of octets received */
- u_int sc_ipsent; /* count of ip packets sent */
- u_int sc_iprcvd; /* count of ip packets received */
- /* 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 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 */
- u_char sc_rawin[16]; /* chars as received */
- int sc_rawin_count; /* # in sc_rawin */
- /* VxWorks-dependent part */
- int sc_fd; /* file descriptor */
- short sc_qlen; /* length of tty input queue */
- SEMAPHORE sc_wrtsem; /* write semaphore */
- int sc_wrt_task_id; /* write task ID */
- int pkt_len; /* length of current packet */
- int sc_tid; /* tid of daemon task */
- };
- /* flags */
- #define SC_COMP_PROT 0x00000001 /* protocol compression (output) */
- #define SC_COMP_AC 0x00000002 /* header compression (output) */
- #define SC_COMP_TCP 0x00000004 /* TCP (VJ) compression (output) */
- #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_ENABLE_IP 0x00000100 /* IP packets may be exchanged */
- #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 0x80000000 /* saw a PPP_ESCAPE */
- #define SC_FLUSH 0x40000000 /* flush input until next PPP_FLAG */
- #define SC_DISCARD_PKT 0x20000000 /* Discard packet at interrupt level */
- #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 = 0 */
- #define SC_RCV_EVNP 0x04000000 /* have rcvd char with even parity */
- #define SC_RCV_ODDP 0x08000000 /* have rcvd char with odd parity */
- /* this stuff doesn't belong here... */
- #define PPPIOCGSEM _IOR('t', 92, int) /* get ppp read semaphore */
- #define PPPIOCGFD _IOR('t', 91, int) /* get ppp underlying fd */
- #define PPPIOCGFLAGS _IOR('t', 90, int) /* get configuration flags */
- #define PPPIOCSFLAGS _IOW('t', 89, int) /* set configuration flags */
- #define PPPIOCGASYNCMAP _IOR('t', 88, int) /* get async map */
- #define PPPIOCSASYNCMAP _IOW('t', 87, int) /* set async map */
- #define PPPIOCGUNIT _IOR('t', 86, int) /* get ppp unit number */
- #define PPPIOCGRASYNCMAP _IOR('t', 85, int) /* get receive async map */
- #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 */
- #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
- /* function declarations */
- extern int pppopen __ARGS((int, char *));
- extern int pppclose __ARGS((int));
- extern int pppread __ARGS((int , char *, int));
- extern int pppwrite __ARGS((int , char *, int));
- extern int ppptioctl __ARGS((int , int , caddr_t));
- extern void ppp_wrt_task __ARGS((struct ppp_softc *));
- #ifdef __cplusplus
- }
- #endif
- #endif /* __INCif_ppph */