1 /* $NetBSD: if_pppvar.h,v 1.3 1996/03/15 02:28:06 paulus Exp $ */ 2 /* 3 * if_pppvar.h - private structures and declarations for PPP. 4 * 5 * Copyright (c) 1994 The Australian National University. 6 * All rights reserved. 7 * 8 * Permission to use, copy, modify, and distribute this software and its 9 * documentation is hereby granted, provided that the above copyright 10 * notice appears in all copies. This software is provided without any 11 * warranty, express or implied. The Australian National University 12 * makes no representations about the suitability of this software for 13 * any purpose. 14 * 15 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY 16 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 17 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF 18 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY 19 * OF SUCH DAMAGE. 20 * 21 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, 22 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 23 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 24 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO 25 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 26 * OR MODIFICATIONS. 27 * 28 * Copyright (c) 1989 Carnegie Mellon University. 29 * All rights reserved. 30 * 31 * Redistribution and use in source and binary forms are permitted 32 * provided that the above copyright notice and this paragraph are 33 * duplicated in all such forms and that any documentation, 34 * advertising materials, and other materials related to such 35 * distribution and use acknowledge that the software was developed 36 * by Carnegie Mellon University. The name of the 37 * University may not be used to endorse or promote products derived 38 * from this software without specific prior written permission. 39 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 40 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 41 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 42 */ 43 44 /* 45 * Supported network protocols. These values are used for 46 * indexing sc_npmode. 47 */ 48 #define NP_IP 0 /* Internet Protocol */ 49 #define NUM_NP 1 /* Number of NPs. */ 50 51 /* 52 * Structure describing each ppp unit. 53 */ 54 struct ppp_softc { 55 struct ifnet sc_if; /* network-visible interface */ 56 u_int sc_flags; /* control/status bits; see if_ppp.h */ 57 void *sc_devp; /* pointer to device-dep structure */ 58 void (*sc_start) __P((struct ppp_softc *)); /* start output proc */ 59 void (*sc_ctlp) __P((struct ppp_softc *)); /* rcvd control pkt */ 60 void (*sc_relinq) __P((struct ppp_softc *)); /* relinquish ifunit */ 61 u_int16_t sc_mru; /* max receive unit */ 62 pid_t sc_xfer; /* used in transferring unit */ 63 struct ifqueue sc_rawq; /* received packets */ 64 struct ifqueue sc_inq; /* queue of input packets for daemon */ 65 struct ifqueue sc_fastq; /* interactive output packet q */ 66 struct mbuf *sc_togo; /* output packet ready to go */ 67 struct mbuf *sc_npqueue; /* output packets not to be sent yet */ 68 struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */ 69 struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */ 70 caddr_t sc_bpf; /* hook for BPF */ 71 enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */ 72 struct compressor *sc_xcomp; /* transmit compressor */ 73 void *sc_xc_state; /* transmit compressor state */ 74 struct compressor *sc_rcomp; /* receive decompressor */ 75 void *sc_rc_state; /* receive decompressor state */ 76 time_t sc_last_sent; /* time (secs) last NP pkt sent */ 77 time_t sc_last_recv; /* time (secs) last NP pkt rcvd */ 78 struct bpf_program sc_pass_filt; /* filter for packets to pass */ 79 struct bpf_program sc_active_filt; /* filter for "non-idle" packets */ 80 #ifdef VJC 81 struct slcompress *sc_comp; /* vjc control buffer */ 82 #endif 83 84 /* Device-dependent part for async lines. */ 85 ext_accm sc_asyncmap; /* async control character map */ 86 u_int32_t sc_rasyncmap; /* receive async control char map */ 87 struct mbuf *sc_outm; /* mbuf chain currently being output */ 88 struct mbuf *sc_m; /* pointer to input mbuf chain */ 89 struct mbuf *sc_mc; /* pointer to current input mbuf */ 90 char *sc_mp; /* ptr to next char in input mbuf */ 91 u_int16_t sc_ilen; /* length of input packet so far */ 92 u_int16_t sc_fcs; /* FCS so far (input) */ 93 u_int16_t sc_outfcs; /* FCS so far for output packet */ 94 u_char sc_rawin[16]; /* chars as received */ 95 int sc_rawin_count; /* # in sc_rawin */ 96 }; 97 98 struct ppp_softc ppp_softc[NPPP]; 99 100 struct ppp_softc *pppalloc __P((pid_t pid)); 101 void pppdealloc __P((struct ppp_softc *sc)); 102 int pppioctl __P((struct ppp_softc *sc, u_long cmd, caddr_t data, 103 int flag, struct proc *p)); 104 void ppppktin __P((struct ppp_softc *sc, struct mbuf *m, int lost)); 105 struct mbuf *ppp_dequeue __P((struct ppp_softc *sc)); 106