mp.h revision 36312 
1/*-
2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	$Id: mp.h,v 1.2 1998/05/21 21:47:08 brian Exp $
27 */
28
29struct mbuf;
30struct physical;
31struct bundle;
32struct cmdargs;
33struct datalink;
34
35#define ENDDISC_NULL	0
36#define ENDDISC_LOCAL	1
37#define ENDDISC_IP	2
38#define ENDDISC_MAC	3
39#define ENDDISC_MAGIC	4
40#define ENDDISC_PSN	5
41
42#define MP_LINKSENT	0	/* We attached the link to another ppp */
43#define MP_UP		1	/* We've started MP */
44#define MP_ADDED	2	/* We've added the link to our MP */
45#define MP_FAILED	3	/* No go */
46
47#define MPSERVER_CONNECTED	0
48#define MPSERVER_LISTENING	1
49#define MPSERVER_FAILED		2
50
51struct enddisc {
52  u_char class;
53  char address[50];
54  int len;
55};
56
57struct peerid {
58  struct enddisc enddisc;	/* Peers endpoint discriminator */
59  char authname[50];		/* Peers name (authenticated) */
60};
61
62struct mpserver {
63  struct descriptor desc;
64  int fd;			/* listen()ing or connect()ing here */
65  struct sockaddr_un socket;	/* On this socket */
66
67  struct {
68    struct datalink *dl;	/* Send this datalink */
69  } send;			/* (in UpdateSet()) */
70};
71
72struct mp {
73  struct link link;
74
75  unsigned active : 1;
76  unsigned peer_is12bit : 1;	/* 12/24bit seq nos */
77  unsigned local_is12bit : 1;
78  u_short peer_mrru;
79  u_short local_mrru;
80
81  struct peerid peer;		/* Who are we talking to */
82  struct mpserver server;	/* Our ``sharing'' socket */
83
84  struct {
85    u_int32_t seq;		/* next outgoing seq */
86    int link;			/* Next link to send on */
87  } out;
88
89  struct {
90    u_int32_t min_in;		/* minimum received incoming seq */
91    u_int32_t next_in;		/* next incoming seq to process */
92  } seq;
93
94  struct {
95    u_short mrru;		/* Max Reconstructed Receive Unit */
96    unsigned shortseq : 2;	/* I want short Sequence Numbers */
97    struct enddisc enddisc;	/* endpoint discriminator */
98  } cfg;
99
100  struct mbuf *inbufs;		/* Received fragments */
101  struct fsm_parent fsmp;	/* Our callback functions */
102  struct bundle *bundle;	/* Parent */
103};
104
105struct mp_link {
106  u_int32_t seq;		/* 12 or 24 bit incoming seq */
107  int weight;			/* bytes to send with each write */
108};
109
110struct mp_header {
111  unsigned begin : 1;
112  unsigned end : 1;
113  u_int32_t seq;
114};
115
116#define descriptor2mpserver(d) \
117  ((d)->type == MPSERVER_DESCRIPTOR ? (struct mpserver *)(d) : NULL)
118#define mpserver_IsOpen(s) ((s)->fd != -1)
119
120extern void peerid_Init(struct peerid *);
121extern int peerid_Equal(const struct peerid *, const struct peerid *);
122extern void mpserver_Init(struct mpserver *);
123extern int mpserver_Open(struct mpserver *, struct peerid *);
124extern void mpserver_Close(struct mpserver *);
125extern void mp_Init(struct mp *, struct bundle *);
126extern void mp_linkInit(struct mp_link *);
127extern int mp_Up(struct mp *, struct datalink *);
128extern void mp_Down(struct mp *);
129extern void mp_Input(struct mp *, struct mbuf *, struct physical *);
130extern int mp_FillQueues(struct bundle *);
131extern int mp_SetDatalinkWeight(struct cmdargs const *);
132extern int mp_ShowStatus(struct cmdargs const *);
133extern const char *mp_Enddisc(u_char, const char *, int);
134extern int mp_SetEnddisc(struct cmdargs const *);
135extern void mp_LinkLost(struct mp *, struct datalink *);
136