1/* 2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * Copyright (c) 1996 Apple Computer, Inc. 30 * 31 * Created April 8, 1996 by Tuyen Nguyen 32 * Modified, March 17, 1997 by Tuyen Nguyen for MacOSX. 33 * 34 * File: rd.c 35 */ 36 37#ifdef AURP_SUPPORT 38 39#include <sys/errno.h> 40#include <sys/types.h> 41#include <sys/param.h> 42#include <machine/spl.h> 43#include <sys/systm.h> 44#include <sys/kernel.h> 45#include <sys/proc.h> 46#include <sys/filedesc.h> 47#include <sys/fcntl.h> 48#include <sys/mbuf.h> 49#include <sys/socket.h> 50#include <sys/socketvar.h> 51#include <net/if.h> 52 53#include <netat/sysglue.h> 54#include <netat/appletalk.h> 55#include <netat/at_pcb.h> 56#include <netat/at_var.h> 57#include <netat/routing_tables.h> 58#include <netat/aurp.h> 59 60/* */ 61void AURPsndRDReq(state) 62 aurp_state_t *state; 63{ 64 int msize; 65 gbuf_t *m; 66 aurp_hdr_t *hdrp; 67 68 if ((state->rcv_state == AURPSTATE_Unconnected) || 69 (state->snd_state == AURPSTATE_Unconnected)) 70 return; 71 72 /* update state info */ 73 state->rcv_state = AURPSTATE_Unconnected; 74 state->snd_state = AURPSTATE_Unconnected; 75 76 /* notify tunnel peer of router going-down for the data receiver side */ 77 msize = sizeof(aurp_hdr_t) + sizeof(short); 78 if ((m = (gbuf_t *)gbuf_alloc(msize, PRI_MED)) != 0) { 79 gbuf_wset(m,msize); 80 81 /* construct the router down packet */ 82 hdrp = (aurp_hdr_t *)gbuf_rptr(m); 83 hdrp->connection_id = state->rcv_connection_id; 84 hdrp->sequence_number = 0; 85 hdrp->command_code = AURPCMD_RDReq; 86 hdrp->flags = 0; 87 *(short *)(hdrp+1) = AURPERR_NormalConnectionClose; 88 89 /* send the packet */ 90 AURPsend(m, AUD_AURP, state->rem_node); 91 } 92 93 /* notify tunnel peer of router going-down for the data sender side */ 94 msize = sizeof(aurp_hdr_t) + sizeof(short); 95 if ((m = (gbuf_t *)gbuf_alloc(msize, PRI_MED)) != 0) { 96 gbuf_wset(m,msize); 97 98 /* construct the router down packet */ 99 hdrp = (aurp_hdr_t *)gbuf_rptr(m); 100 hdrp->connection_id = state->snd_connection_id; 101 hdrp->sequence_number = state->snd_sequence_number; 102 hdrp->command_code = AURPCMD_RDReq; 103 hdrp->flags = 0; 104 *(short *)(hdrp+1) = AURPERR_NormalConnectionClose; 105 106 /* send the packet */ 107 AURPsend(m, AUD_AURP, state->rem_node); 108 } 109} 110 111/* */ 112void AURPrcvRDReq(state, m) 113 aurp_state_t *state; 114 gbuf_t *m; 115{ 116 /* update state info */ 117 state->rcv_state = AURPSTATE_Unconnected; 118 state->snd_state = AURPSTATE_Unconnected; 119 AURPcleanup(state); 120 121 /* purge all routes associated with the tunnel peer going-down */ 122 AURPpurgeri(state->rem_node); 123 124 /* respond to the going-down peer with an RI Ack packet */ 125 AURPsndRIAck(state, m, 0); 126} 127 128#endif /* AURP_SUPPORT */ 129