[85a0f07] | 1 | /* $Id$ */ |
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| 2 | /* |
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| 3 | * if_pppvar.h - private structures and declarations for PPP. |
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| 4 | * |
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| 5 | * Copyright (c) 1994 The Australian National University. |
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| 6 | * All rights reserved. |
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| 7 | * |
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| 8 | * Permission to use, copy, modify, and distribute this software and its |
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| 9 | * documentation is hereby granted, provided that the above copyright |
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| 10 | * notice appears in all copies. This software is provided without any |
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| 11 | * warranty, express or implied. The Australian National University |
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| 12 | * makes no representations about the suitability of this software for |
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| 13 | * any purpose. |
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| 14 | * |
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| 15 | * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY |
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| 16 | * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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| 17 | * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF |
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| 18 | * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY |
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| 19 | * OF SUCH DAMAGE. |
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| 20 | * |
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| 21 | * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, |
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| 22 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
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| 23 | * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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| 24 | * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO |
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| 25 | * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, |
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| 26 | * OR MODIFICATIONS. |
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| 27 | * |
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| 28 | * Copyright (c) 1989 Carnegie Mellon University. |
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| 29 | * All rights reserved. |
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| 30 | * |
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| 31 | * Redistribution and use in source and binary forms are permitted |
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| 32 | * provided that the above copyright notice and this paragraph are |
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| 33 | * duplicated in all such forms and that any documentation, |
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| 34 | * advertising materials, and other materials related to such |
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| 35 | * distribution and use acknowledge that the software was developed |
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| 36 | * by Carnegie Mellon University. The name of the |
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| 37 | * University may not be used to endorse or promote products derived |
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| 38 | * from this software without specific prior written permission. |
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| 39 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
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| 40 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
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| 41 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
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| 42 | */ |
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| 43 | |
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| 44 | /* |
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| 45 | * Supported network protocols. These values are used for |
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| 46 | * indexing sc_npmode. |
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| 47 | */ |
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| 48 | #define NP_IP 0 /* Internet Protocol */ |
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| 49 | #define NUM_NP 1 /* Number of NPs. */ |
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| 50 | |
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| 51 | /* |
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| 52 | * Structure describing each ppp unit. |
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| 53 | */ |
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| 54 | struct ppp_softc { |
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| 55 | struct ifnet sc_if; /* network-visible interface */ |
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| 56 | u_int sc_flags; /* control/status bits; see if_ppp.h */ |
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| 57 | void *sc_devp; /* pointer to device-dep structure */ |
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| 58 | void (*sc_start) __P((struct ppp_softc *)); /* start output proc */ |
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| 59 | void (*sc_ctlp) __P((struct ppp_softc *)); /* rcvd control pkt */ |
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| 60 | void (*sc_relinq) __P((struct ppp_softc *)); /* relinquish ifunit */ |
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| 61 | short sc_mru; /* max receive unit */ |
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| 62 | pid_t sc_xfer; /* used in transferring unit */ |
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| 63 | struct ifqueue sc_rawq; /* received packets */ |
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| 64 | struct ifqueue sc_inq; /* queue of input packets for daemon */ |
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| 65 | struct ifqueue sc_fastq; /* interactive output packet q */ |
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| 66 | struct mbuf *sc_togo; /* output packet ready to go */ |
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| 67 | struct mbuf *sc_npqueue; /* output packets not to be sent yet */ |
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| 68 | struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */ |
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| 69 | struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */ |
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| 70 | caddr_t sc_bpf; /* hook for BPF */ |
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| 71 | enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */ |
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| 72 | struct compressor *sc_xcomp; /* transmit compressor */ |
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| 73 | void *sc_xc_state; /* transmit compressor state */ |
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| 74 | struct compressor *sc_rcomp; /* receive decompressor */ |
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| 75 | void *sc_rc_state; /* receive decompressor state */ |
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| 76 | time_t sc_last_sent; /* time (secs) last NP pkt sent */ |
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| 77 | time_t sc_last_recv; /* time (secs) last NP pkt rcvd */ |
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| 78 | #ifdef PPP_FILTER |
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| 79 | struct bpf_program sc_pass_filt; /* filter for packets to pass */ |
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| 80 | struct bpf_program sc_active_filt; /* filter for "non-idle" packets */ |
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| 81 | #endif /* PPP_FILTER */ |
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| 82 | #ifdef VJC |
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| 83 | struct vjcompress *sc_comp; /* vjc control buffer */ |
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| 84 | #endif |
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| 85 | |
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| 86 | /* Device-dependent part for async lines. */ |
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| 87 | ext_accm sc_asyncmap; /* async control character map */ |
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| 88 | u_long sc_rasyncmap; /* receive async control char map */ |
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| 89 | struct mbuf *sc_outm; /* mbuf chain currently being output */ |
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| 90 | struct mbuf *sc_m; /* pointer to input mbuf chain */ |
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| 91 | struct mbuf *sc_mc; /* pointer to current input mbuf */ |
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| 92 | char *sc_mp; /* ptr to next char in input mbuf */ |
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| 93 | short sc_ilen; /* length of input packet so far */ |
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| 94 | u_short sc_fcs; /* FCS so far (input) */ |
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| 95 | u_short sc_outfcs; /* FCS so far for output packet */ |
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| 96 | u_char sc_rawin[16]; /* chars as received */ |
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| 97 | int sc_rawin_count; /* # in sc_rawin */ |
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| 98 | rtems_id sem_id; /* ID of comm semaphore */ |
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| 99 | }; |
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| 100 | |
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| 101 | struct ppp_softc ppp_softc[NPPP]; |
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| 102 | |
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| 103 | struct ppp_softc *pppalloc __P((pid_t pid)); |
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| 104 | void pppdealloc __P((struct ppp_softc *sc)); |
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| 105 | int pppoutput __P((struct ifnet *, struct mbuf *, |
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| 106 | struct sockaddr *, struct rtentry *)); |
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| 107 | int pppioctl __P((struct ppp_softc *sc, int cmd, caddr_t data, |
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| 108 | int flag, struct proc *p)); |
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| 109 | void ppp_restart __P((struct ppp_softc *sc)); |
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| 110 | void ppppktin __P((struct ppp_softc *sc, struct mbuf *m, int lost)); |
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| 111 | struct mbuf *ppp_dequeue __P((struct ppp_softc *sc)); |
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