* 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.
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 */
#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.
#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 */
#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 */
#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_ */
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