/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
struct mbuf;
struct physical;
struct bundle;
struct cmdargs;
struct datalink;
#define ENDDISC_NULL 0
#define ENDDISC_LOCAL 1
#define ENDDISC_IP 2
#define ENDDISC_MAC 3
#define ENDDISC_MAGIC 4
#define ENDDISC_PSN 5
#define MP_LINKSENT 0 /* We attached the link to another ppp */
#define MP_UP 1 /* We've started MP */
#define MP_ADDED 2 /* We've added the link to our MP */
#define MP_FAILED 3 /* No go */
#define MPSERVER_CONNECTED 0
#define MPSERVER_LISTENING 1
#define MPSERVER_FAILED 2
struct enddisc {
u_char class;
char address[50];
int len;
};
struct peerid {
struct enddisc enddisc; /* Peers endpoint discriminator */
char authname[AUTHLEN]; /* Peers name (authenticated) */
};
struct mpserver {
struct fdescriptor desc;
int fd; /* listen()ing or connect()ing here */
struct sockaddr_un socket; /* On this socket */
struct {
struct datalink *dl; /* Send this datalink */
} send; /* (in UpdateSet()) */
};
struct mp {
struct link link;
unsigned active : 1;
unsigned peer_is12bit : 1; /* 12/24bit seq nos */
unsigned local_is12bit : 1;
u_short peer_mrru;
u_short local_mrru;
struct peerid peer; /* Who are we talking to */
struct mpserver server; /* Our ``sharing'' socket */
struct {
u_int32_t seq; /* next outgoing seq */
int link; /* Next link to send on */
int af; /* Next address family to send */
} out;
struct {
u_int32_t min_in; /* minimum received incoming seq */
u_int32_t next_in; /* next incoming seq to process */
} seq;
struct {
u_short mrru; /* Max Reconstructed Receive Unit */
unsigned shortseq : 2; /* I want short Sequence Numbers */
unsigned negenddisc : 2; /* I want an endpoint discriminator */
struct enddisc enddisc; /* endpoint discriminator */
struct {
int min; /* Lowest percent of bundle->bandwidth */
int max; /* Highest percent of bundle->bandwidth out */
int period; /* link->throughput sample period */
} autoload;
} cfg;
struct mbuf *inbufs; /* Received fragments */
struct fsm_parent fsmp; /* Our callback functions */
struct bundle *bundle; /* Parent */
};
struct mp_link {
u_int32_t seq; /* 12 or 24 bit incoming seq */
unsigned bandwidth; /* Our link bandwidth (or zero) */
};
struct mp_header {
unsigned begin : 1;
unsigned end : 1;
u_int32_t seq;
};
#define descriptor2mpserver(d) \
((d)->type == MPSERVER_DESCRIPTOR ? (struct mpserver *)(d) : NULL)
#define mpserver_IsOpen(s) ((s)->fd != -1)
extern void peerid_Init(struct peerid *);
extern int peerid_Equal(const struct peerid *, const struct peerid *);
extern void mpserver_Init(struct mpserver *);
extern int mpserver_Open(struct mpserver *, struct peerid *);
extern void mpserver_Close(struct mpserver *);
extern void mp_Init(struct mp *, struct bundle *);
extern void mp_linkInit(struct mp_link *);
extern int mp_Up(struct mp *, struct datalink *);
extern void mp_Down(struct mp *);
extern struct mbuf *mp_Input(struct bundle *, struct link *, struct mbuf *);
extern int mp_FillPhysicalQueues(struct bundle *);
extern int mp_SetDatalinkBandwidth(struct cmdargs const *);
extern int mp_ShowStatus(struct cmdargs const *);
extern const char *mp_Enddisc(u_char, const char *, size_t);
extern int mp_SetEnddisc(struct cmdargs const *);
extern void mp_LinkLost(struct mp *, struct datalink *);
extern void mp_RestartAutoloadTimer(struct mp *);
extern void mp_CheckAutoloadTimer(struct mp *);
extern void mp_StopAutoloadTimer(struct mp *);
extern size_t mp_QueueLen(struct mp *);
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