/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1996 Apple Computer, Inc. * * Created April 8, 1996 by Tuyen Nguyen * Modified, March 17, 1997 by Tuyen Nguyen for MacOSX. * * File: rd.c */ #ifdef AURP_SUPPORT #include <sys/errno.h> #include <sys/types.h> #include <sys/param.h> #include <machine/spl.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/proc.h> #include <sys/filedesc.h> #include <sys/fcntl.h> #include <sys/mbuf.h> #include <sys/socket.h> #include <sys/socketvar.h> #include <net/if.h> #include <netat/sysglue.h> #include <netat/appletalk.h> #include <netat/at_pcb.h> #include <netat/at_var.h> #include <netat/routing_tables.h> #include <netat/aurp.h> /* */ void AURPsndRDReq(state) aurp_state_t *state; { int msize; gbuf_t *m; aurp_hdr_t *hdrp; if ((state->rcv_state == AURPSTATE_Unconnected) || (state->snd_state == AURPSTATE_Unconnected)) return; /* update state info */ state->rcv_state = AURPSTATE_Unconnected; state->snd_state = AURPSTATE_Unconnected; /* notify tunnel peer of router going-down for the data receiver side */ msize = sizeof(aurp_hdr_t) + sizeof(short); if ((m = (gbuf_t *)gbuf_alloc(msize, PRI_MED)) != 0) { gbuf_wset(m,msize); /* construct the router down packet */ hdrp = (aurp_hdr_t *)gbuf_rptr(m); hdrp->connection_id = state->rcv_connection_id; hdrp->sequence_number = 0; hdrp->command_code = AURPCMD_RDReq; hdrp->flags = 0; *(short *)(hdrp+1) = AURPERR_NormalConnectionClose; /* send the packet */ AURPsend(m, AUD_AURP, state->rem_node); } /* notify tunnel peer of router going-down for the data sender side */ msize = sizeof(aurp_hdr_t) + sizeof(short); if ((m = (gbuf_t *)gbuf_alloc(msize, PRI_MED)) != 0) { gbuf_wset(m,msize); /* construct the router down packet */ hdrp = (aurp_hdr_t *)gbuf_rptr(m); hdrp->connection_id = state->snd_connection_id; hdrp->sequence_number = state->snd_sequence_number; hdrp->command_code = AURPCMD_RDReq; hdrp->flags = 0; *(short *)(hdrp+1) = AURPERR_NormalConnectionClose; /* send the packet */ AURPsend(m, AUD_AURP, state->rem_node); } } /* */ void AURPrcvRDReq(state, m) aurp_state_t *state; gbuf_t *m; { /* update state info */ state->rcv_state = AURPSTATE_Unconnected; state->snd_state = AURPSTATE_Unconnected; AURPcleanup(state); /* purge all routes associated with the tunnel peer going-down */ AURPpurgeri(state->rem_node); /* respond to the going-down peer with an RI Ack packet */ AURPsndRIAck(state, m, 0); } #endif /* AURP_SUPPORT */