1 /* $NetBSD: if_pppvar.h,v 1.27 2008/02/20 17:05:53 matt Exp $ */ 2 /* Id: if_pppvar.h,v 1.3 1996/07/01 01:04:37 paulus Exp */ 3 4 /* 5 * if_pppvar.h - private structures and declarations for PPP. 6 * 7 * Copyright (c) 1989-2002 Paul Mackerras. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The name(s) of the authors of this software must not be used to 22 * endorse or promote products derived from this software without 23 * prior written permission. 24 * 25 * 4. Redistributions of any form whatsoever must retain the following 26 * acknowledgment: 27 * "This product includes software developed by Paul Mackerras 28 * <paulus@samba.org>". 29 * 30 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO 31 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 32 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY 33 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 34 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 35 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 36 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 37 * 38 * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in 49 * the documentation and/or other materials provided with the 50 * distribution. 51 * 52 * 3. The name "Carnegie Mellon University" must not be used to 53 * endorse or promote products derived from this software without 54 * prior written permission. For permission or any legal 55 * details, please contact 56 * Office of Technology Transfer 57 * Carnegie Mellon University 58 * 5000 Forbes Avenue 59 * Pittsburgh, PA 15213-3890 60 * (412) 268-4387, fax: (412) 268-7395 61 * tech-transfer@andrew.cmu.edu 62 * 63 * 4. Redistributions of any form whatsoever must retain the following 64 * acknowledgment: 65 * "This product includes software developed by Computing Services 66 * at Carnegie Mellon University (http://www.cmu.edu/computing/)." 67 * 68 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO 69 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 70 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE 71 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 72 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 73 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 74 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 75 */ 76 77 #ifndef _NET_IF_PPPVAR_H_ 78 #define _NET_IF_PPPVAR_H_ 79 80 #include <sys/callout.h> 81 82 /* 83 * Supported network protocols. These values are used for 84 * indexing sc_npmode. 85 */ 86 #define NP_IP 0 /* Internet Protocol */ 87 #define NP_IPV6 1 /* Internet Protocol version 6 */ 88 #define NUM_NP 2 /* Number of NPs. */ 89 90 /* 91 * Structure describing each ppp unit. 92 */ 93 struct ppp_softc { 94 struct ifnet sc_if; /* network-visible interface */ 95 int sc_unit; /* XXX unit number */ 96 u_int sc_flags; /* control/status bits; see if_ppp.h */ 97 void *sc_devp; /* pointer to device-dep structure */ 98 void (*sc_start)(struct ppp_softc *); /* start output proc */ 99 void (*sc_ctlp)(struct ppp_softc *); /* rcvd control pkt */ 100 void (*sc_relinq)(struct ppp_softc *); /* relinquish ifunit */ 101 struct callout sc_timo_ch; /* timeout callout */ 102 uint16_t sc_mru; /* max receive unit */ 103 pid_t sc_xfer; /* used in transferring unit */ 104 struct ifqueue sc_rawq; /* received packets */ 105 struct ifqueue sc_inq; /* queue of input packets for daemon */ 106 struct ifqueue sc_fastq; /* interactive output packet q */ 107 struct mbuf *sc_togo; /* output packet ready to go */ 108 struct mbuf *sc_npqueue; /* output packets not to be sent yet */ 109 struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */ 110 struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */ 111 enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */ 112 struct compressor *sc_xcomp; /* transmit compressor */ 113 void *sc_xc_state; /* transmit compressor state */ 114 struct compressor *sc_rcomp; /* receive decompressor */ 115 void *sc_rc_state; /* receive decompressor state */ 116 time_t sc_last_sent; /* time (secs) last NP pkt sent */ 117 time_t sc_last_recv; /* time (secs) last NP pkt rcvd */ 118 void *sc_si; /* software interrupt handle */ 119 #ifdef PPP_FILTER 120 /* Filter for packets to pass. */ 121 struct bpf_program sc_pass_filt_in; 122 struct bpf_program sc_pass_filt_out; 123 124 /* Filter for "non-idle" packets. */ 125 struct bpf_program sc_active_filt_in; 126 struct bpf_program sc_active_filt_out; 127 #endif /* PPP_FILTER */ 128 #ifdef VJC 129 struct slcompress *sc_comp; /* vjc control buffer */ 130 #endif 131 132 /* Device-dependent part for async lines. */ 133 ext_accm sc_asyncmap; /* async control character map */ 134 uint32_t sc_rasyncmap; /* receive async control char map */ 135 struct mbuf *sc_outm; /* mbuf chain currently being output */ 136 struct mbuf *sc_m; /* pointer to input mbuf chain */ 137 struct mbuf *sc_mc; /* pointer to current input mbuf */ 138 char *sc_mp; /* ptr to next char in input mbuf */ 139 uint16_t sc_ilen; /* length of input packet so far */ 140 uint16_t sc_fcs; /* FCS so far (input) */ 141 uint16_t sc_outfcs; /* FCS so far for output packet */ 142 uint16_t sc_maxfastq; /* Maximum number of packets that 143 * can be received back-to-back in 144 * the high priority queue */ 145 uint8_t sc_nfastq; /* Number of packets received 146 * back-to-back in the high priority 147 * queue */ 148 u_char sc_rawin_start; /* current char start */ 149 struct ppp_rawin sc_rawin; /* chars as received */ 150 LIST_ENTRY(ppp_softc) sc_iflist; 151 }; 152 153 #ifdef _KERNEL 154 155 struct ppp_softc *pppalloc(pid_t); 156 void pppdealloc(struct ppp_softc *); 157 int pppioctl(struct ppp_softc *, u_long, void *, int, struct lwp *); 158 void ppp_restart(struct ppp_softc *); 159 void ppppktin(struct ppp_softc *, struct mbuf *, int); 160 struct mbuf *ppp_dequeue(struct ppp_softc *); 161 int pppoutput(struct ifnet *, struct mbuf *, const struct sockaddr *, 162 struct rtentry *); 163 #endif /* _KERNEL */ 164 165 #endif /* !_NET_IF_PPPVAR_H_ */ 166