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 * $FreeBSD$ 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[AUTHLEN]; /* Peers name (authenticated) */ 60}; 61 62struct mpserver { 63 struct fdescriptor 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 int af; /* Next address family to send */ 88 } out; 89 90 struct { 91 u_int32_t min_in; /* minimum received incoming seq */ 92 u_int32_t next_in; /* next incoming seq to process */ 93 } seq; 94 95 struct { 96 u_short mrru; /* Max Reconstructed Receive Unit */ 97 unsigned shortseq : 2; /* I want short Sequence Numbers */ 98 unsigned negenddisc : 2; /* I want an endpoint discriminator */ 99 struct enddisc enddisc; /* endpoint discriminator */ 100 struct { 101 int min; /* Lowest percent of bundle->bandwidth */ 102 int max; /* Highest percent of bundle->bandwidth out */ 103 int period; /* link->throughput sample period */ 104 } autoload; 105 } cfg; 106 107 struct mbuf *inbufs; /* Received fragments */ 108 struct fsm_parent fsmp; /* Our callback functions */ 109 struct bundle *bundle; /* Parent */ 110}; 111 112struct mp_link { 113 u_int32_t seq; /* 12 or 24 bit incoming seq */ 114 unsigned bandwidth; /* Our link bandwidth (or zero) */ 115}; 116 117struct mp_header { 118 unsigned begin : 1; 119 unsigned end : 1; 120 u_int32_t seq; 121}; 122 123#define descriptor2mpserver(d) \ 124 ((d)->type == MPSERVER_DESCRIPTOR ? (struct mpserver *)(d) : NULL) 125#define mpserver_IsOpen(s) ((s)->fd != -1) 126 127extern void peerid_Init(struct peerid *); 128extern int peerid_Equal(const struct peerid *, const struct peerid *); 129extern void mpserver_Init(struct mpserver *); 130extern int mpserver_Open(struct mpserver *, struct peerid *); 131extern void mpserver_Close(struct mpserver *); 132extern void mp_Init(struct mp *, struct bundle *); 133extern void mp_linkInit(struct mp_link *); 134extern int mp_Up(struct mp *, struct datalink *); 135extern void mp_Down(struct mp *); 136extern struct mbuf *mp_Input(struct bundle *, struct link *, struct mbuf *); 137extern int mp_FillPhysicalQueues(struct bundle *); 138extern int mp_SetDatalinkBandwidth(struct cmdargs const *); 139extern int mp_ShowStatus(struct cmdargs const *); 140extern const char *mp_Enddisc(u_char, const char *, size_t); 141extern int mp_SetEnddisc(struct cmdargs const *); 142extern void mp_LinkLost(struct mp *, struct datalink *); 143extern void mp_RestartAutoloadTimer(struct mp *); 144extern void mp_CheckAutoloadTimer(struct mp *); 145extern void mp_StopAutoloadTimer(struct mp *); 146extern size_t mp_QueueLen(struct mp *); 147