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 * $Id$ 27 */ 28 29 struct mp { 30 struct link link; 31 32 unsigned active : 1; 33 unsigned is12bit : 1; /* 12 / 24bit seq nos */ 34 35 struct { 36 u_int32_t out; /* next outgoing seq */ 37 u_int32_t min_in; /* minimum received incoming seq */ 38 u_int32_t next_in; /* next incoming seq to process */ 39 } seq; 40 struct mbuf *inbufs; /* Received fragments */ 41 42 struct fsm_parent fsmp; /* Our callback functions */ 43 44 struct bundle *bundle; 45 }; 46 47 struct mp_link { 48 u_int32_t seq; /* 12 or 24 bit incoming seq */ 49 int weight; /* bytes to send with each write */ 50 }; 51 52 struct mp_header { 53 unsigned begin : 1; 54 unsigned end : 1; 55 u_int32_t seq; 56 }; 57 58 extern void mp_Init(struct mp *, struct bundle *); 59 extern void mp_linkInit(struct mp_link *); 60 extern void mp_Input(struct mp *, struct mbuf *, struct physical *); 61 extern int mp_FillQueues(struct bundle *); 62 extern int mp_SetDatalinkWeight(struct cmdargs const *); 63