2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #define ENDDISC_NULL 0
38 #define ENDDISC_LOCAL 1
41 #define ENDDISC_MAGIC 4
44 #define MP_LINKSENT 0 /* We attached the link to another ppp */
45 #define MP_UP 1 /* We've started MP */
46 #define MP_ADDED 2 /* We've added the link to our MP */
47 #define MP_FAILED 3 /* No go */
49 #define MPSERVER_CONNECTED 0
50 #define MPSERVER_LISTENING 1
51 #define MPSERVER_FAILED 2
60 struct enddisc enddisc; /* Peers endpoint discriminator */
61 char authname[AUTHLEN]; /* Peers name (authenticated) */
65 struct fdescriptor desc;
66 int fd; /* listen()ing or connect()ing here */
67 struct sockaddr_un socket; /* On this socket */
70 struct datalink *dl; /* Send this datalink */
71 } send; /* (in UpdateSet()) */
78 unsigned peer_is12bit : 1; /* 12/24bit seq nos */
79 unsigned local_is12bit : 1;
83 struct peerid peer; /* Who are we talking to */
84 struct mpserver server; /* Our ``sharing'' socket */
87 u_int32_t seq; /* next outgoing seq */
88 int link; /* Next link to send on */
89 int af; /* Next address family to send */
93 u_int32_t min_in; /* minimum received incoming seq */
94 u_int32_t next_in; /* next incoming seq to process */
98 u_short mrru; /* Max Reconstructed Receive Unit */
99 unsigned shortseq : 2; /* I want short Sequence Numbers */
100 unsigned negenddisc : 2; /* I want an endpoint discriminator */
101 struct enddisc enddisc; /* endpoint discriminator */
103 int min; /* Lowest percent of bundle->bandwidth */
104 int max; /* Highest percent of bundle->bandwidth out */
105 int period; /* link->throughput sample period */
109 struct mbuf *inbufs; /* Received fragments */
110 struct fsm_parent fsmp; /* Our callback functions */
111 struct bundle *bundle; /* Parent */
115 u_int32_t seq; /* 12 or 24 bit incoming seq */
116 unsigned bandwidth; /* Our link bandwidth (or zero) */
125 #define descriptor2mpserver(d) \
126 ((d)->type == MPSERVER_DESCRIPTOR ? (struct mpserver *)(d) : NULL)
127 #define mpserver_IsOpen(s) ((s)->fd != -1)
129 extern void peerid_Init(struct peerid *);
130 extern int peerid_Equal(const struct peerid *, const struct peerid *);
131 extern void mpserver_Init(struct mpserver *);
132 extern int mpserver_Open(struct mpserver *, struct peerid *);
133 extern void mpserver_Close(struct mpserver *);
134 extern void mp_Init(struct mp *, struct bundle *);
135 extern void mp_linkInit(struct mp_link *);
136 extern int mp_Up(struct mp *, struct datalink *);
137 extern void mp_Down(struct mp *);
138 extern struct mbuf *mp_Input(struct bundle *, struct link *, struct mbuf *);
139 extern int mp_FillPhysicalQueues(struct bundle *);
140 extern int mp_SetDatalinkBandwidth(struct cmdargs const *);
141 extern int mp_ShowStatus(struct cmdargs const *);
142 extern const char *mp_Enddisc(u_char, const char *, size_t);
143 extern int mp_SetEnddisc(struct cmdargs const *);
144 extern void mp_LinkLost(struct mp *, struct datalink *);
145 extern void mp_RestartAutoloadTimer(struct mp *);
146 extern void mp_CheckAutoloadTimer(struct mp *);
147 extern void mp_StopAutoloadTimer(struct mp *);
148 extern size_t mp_QueueLen(struct mp *);