FreeBSD/Linux Kernel Cross Reference
sys/net/if_pppvar.h
1 /*
2 * if_pppvar.h - private structures and declarations for PPP.
3 *
4 * Copyright (c) 1994 The Australian National University.
5 * All rights reserved.
6 *
7 * Permission to use, copy, modify, and distribute this software and its
8 * documentation is hereby granted, provided that the above copyright
9 * notice appears in all copies. This software is provided without any
10 * warranty, express or implied. The Australian National University
11 * makes no representations about the suitability of this software for
12 * any purpose.
13 *
14 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
15 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
16 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
17 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
18 * OF SUCH DAMAGE.
19 *
20 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
21 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
22 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
23 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
24 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
25 * OR MODIFICATIONS.
26 *
27 * Copyright (c) 1989 Carnegie Mellon University.
28 * All rights reserved.
29 *
30 * Redistribution and use in source and binary forms are permitted
31 * provided that the above copyright notice and this paragraph are
32 * duplicated in all such forms and that any documentation,
33 * advertising materials, and other materials related to such
34 * distribution and use acknowledge that the software was developed
35 * by Carnegie Mellon University. The name of the
36 * University may not be used to endorse or promote products derived
37 * from this software without specific prior written permission.
38 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
39 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
40 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
41 *
42 * $FreeBSD: releng/5.1/sys/net/if_pppvar.h 101588 2002-08-09 15:30:48Z brooks $
43 */
44
45 /*
46 * Supported network protocols. These values are used for
47 * indexing sc_npmode.
48 */
49 #define NP_IP 0 /* Internet Protocol */
50 #define NUM_NP 1 /* Number of NPs. */
51
52 /*
53 * Structure describing each ppp unit.
54 */
55 struct ppp_softc {
56 struct ifnet sc_if; /* network-visible interface */
57 /*hi*/ u_int sc_flags; /* control/status bits; see if_ppp.h */
58 struct callout_handle sc_ch; /* Used for scheduling timeouts */
59 void *sc_devp; /* pointer to device-dep structure */
60 void (*sc_start)(struct ppp_softc *); /* start output proc */
61 void (*sc_ctlp)(struct ppp_softc *); /* rcvd control pkt */
62 void (*sc_relinq)(struct ppp_softc *); /* relinquish ifunit */
63 void (*sc_setmtu)(struct ppp_softc *); /* set mtu */
64 short sc_mru; /* max receive unit */
65 pid_t sc_xfer; /* used in transferring unit */
66 /*hi*/ struct ifqueue sc_rawq; /* received packets */
67 /*net*/ struct ifqueue sc_inq; /* queue of input packets for daemon */
68 /*net*/ struct ifqueue sc_fastq; /* interactive output packet q */
69 struct mbuf *sc_npqueue; /* output packets not to be sent yet */
70 struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */
71 struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */
72 enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
73 struct compressor *sc_xcomp; /* transmit compressor */
74 void *sc_xc_state; /* transmit compressor state */
75 struct compressor *sc_rcomp; /* receive decompressor */
76 void *sc_rc_state; /* receive decompressor state */
77 time_t sc_last_sent; /* time (secs) last NP pkt sent */
78 time_t sc_last_recv; /* time (secs) last NP pkt rcvd */
79 #ifdef PPP_FILTER
80 struct bpf_program sc_pass_filt; /* filter for packets to pass */
81 struct bpf_program sc_active_filt; /* filter for "non-idle" packets */
82 #endif /* PPP_FILTER */
83 #ifdef VJC
84 struct slcompress *sc_comp; /* vjc control buffer */
85 #endif
86
87 /* Device-dependent part for async lines. */
88 ext_accm sc_asyncmap; /* async control character map */
89 u_long sc_rasyncmap; /* receive async control char map */
90 struct mbuf *sc_outm; /* mbuf chain currently being output */
91 struct mbuf *sc_m; /* pointer to input mbuf chain */
92 struct mbuf *sc_mc; /* pointer to current input mbuf */
93 char *sc_mp; /* ptr to next char in input mbuf */
94 short sc_ilen; /* length of input packet so far */
95 u_short sc_fcs; /* FCS so far (input) */
96 u_short sc_outfcs; /* FCS so far for output packet */
97 u_char sc_rawin[16]; /* chars as received */
98 int sc_rawin_count; /* # in sc_rawin */
99 LIST_ENTRY(ppp_softc) sc_list;
100 };
101
102 struct ppp_softc *pppalloc(pid_t pid);
103 void pppdealloc(struct ppp_softc *sc);
104 int pppioctl(struct ppp_softc *sc, u_long cmd, caddr_t data, int flag,
105 struct thread *td);
106 int pppoutput(struct ifnet *ifp, struct mbuf *m0, struct sockaddr *dst,
107 struct rtentry *rtp);
108 void ppp_restart(struct ppp_softc *sc);
109 void ppppktin(struct ppp_softc *sc, struct mbuf *m, int lost);
110 struct mbuf *ppp_dequeue(struct ppp_softc *sc);
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