+/* $Id: if_ppp.h,v 1.7 1994/10/21 06:26:15 paulus Exp $ */
+
/*
* if_ppp.h - Point-to-Point Protocol definitions.
*
* 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.
- *
- * $Id: if_ppp.h,v 1.4 1994/09/01 00:45:32 paulus Exp $
*/
#ifndef _IF_PPP_H_
#define _IF_PPP_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.
+ * Bit definitions for flags.
*/
-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 */
- pid_t 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 */
- caddr_t sc_bpf; /* hook for BPF */
- 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 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 */
-};
-
-/* 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_REJ_COMP_TCP 0x00000020 /* reject TCP (VJ) comp. on input */
#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_XCOMP_RUN 0x00001000 /* compressor has been inited */
-#define SC_RCOMP_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 0x80000000 /* saw a PPP_ESCAPE */
-#define SC_FLUSH 0x40000000 /* flush input until next PPP_FLAG */
#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_MASK 0x0fff00ff /* bits that user can change */
/*
- * What to do with network protocol (NP) packets.
+ * State bits in sc_flags, not changeable by user.
*/
+#define SC_VJ_RESET 0x00000800 /* need to reset VJ decomp */
+#define SC_COMP_RUN 0x00001000 /* compressor has been inited */
+#define SC_DECOMP_RUN 0x00002000 /* decompressor has been inited */
+#define SC_DC_ERROR 0x00004000 /* non-fatal decomp error detected */
+#define SC_DC_FERROR 0x00008000 /* fatal decomp error detected */
+#define SC_TBUSY 0x10000000 /* xmitter doesn't need a packet yet */
+#define SC_PKTLOST 0x20000000 /* have lost or dropped a packet */
+#define SC_FLUSH 0x40000000 /* flush input until next PPP_FLAG */
+#define SC_ESCAPED 0x80000000 /* saw a PPP_ESCAPE */
-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. */
-};
+/*
+ * Ioctl definitions.
+ */
struct npioctl {
int protocol; /* PPP procotol, e.g. PPP_IP */
int transmit;
};
-/* this stuff doesn't belong here... */
+struct ifpppstatsreq {
+ char ifr_name[IFNAMSIZ];
+ struct ppp_stats stats;
+};
+
+/*
+ * Ioctl definitions.
+ */
#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 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
+#define SIOCGPPPSTATS _IOWR('i', 123, struct ifpppstatsreq)
-/* old copies of PPP may have defined this */
#if !defined(ifr_mtu)
-#define ifr_mtu ifr_metric
+#define ifr_mtu ifr_ifru.ifru_metric
#endif
#endif /* _IF_PPP_H_ */
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