[apple/xnu.git] / bsd / netat / aurp_rd.c

/*
 * 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 */
Commit	Line	Data
1c79356b	1	/*
5d5c5d0d A	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
5d5c5d0d A	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	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.
8f6c56a5	14	*
2d21ac55 A	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
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	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.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	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	*/
0c530ab8 A	36
	37	#ifdef AURP_SUPPORT
	38
1c79356b A	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>
2d21ac55	55	#include <netat/at_pcb.h>
1c79356b A	56	#include <netat/at_var.h>
1c79356b A	57	#include <netat/routing_tables.h>
1c79356b A	58	#include <netat/aurp.h>
	59
	60	/* */
	61	void 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	/* */
	112	void 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	}
0c530ab8	127
2d21ac55	128	#endif /* AURP_SUPPORT */