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

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * 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. 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_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
 */
#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_var.h>
#include <netat/routing_tables.h>
#include <netat/at_pcb.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);
}
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
43866e37	6	* Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
1c79356b	7	*
43866e37 A	8	* This file contains Original Code and/or Modifications of Original Code
	9	* as defined in and that are subject to the Apple Public Source License
	10	* Version 2.0 (the 'License'). You may not use this file except in
	11	* compliance with the License. Please obtain a copy of the License at
	12	* http://www.opensource.apple.com/apsl/ and read it before using this
	13	* file.
	14	*
	15	* The Original Code and all software distributed under the License are
	16	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	17	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	18	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
43866e37 A	19	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	20	* Please see the License for the specific language governing rights and
	21	* limitations under the License.
1c79356b A	22	*
	23	* @APPLE_LICENSE_HEADER_END@
	24	*/
	25	/*
	26	* Copyright (c) 1996 Apple Computer, Inc.
	27	*
	28	* Created April 8, 1996 by Tuyen Nguyen
	29	* Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
	30	*
	31	* File: rd.c
	32	*/
	33	#include <sys/errno.h>
	34	#include <sys/types.h>
	35	#include <sys/param.h>
	36	#include <machine/spl.h>
	37	#include <sys/systm.h>
	38	#include <sys/kernel.h>
	39	#include <sys/proc.h>
	40	#include <sys/filedesc.h>
	41	#include <sys/fcntl.h>
	42	#include <sys/mbuf.h>
	43	#include <sys/socket.h>
	44	#include <sys/socketvar.h>
	45	#include <net/if.h>
	46
	47	#include <netat/sysglue.h>
	48	#include <netat/appletalk.h>
	49	#include <netat/at_var.h>
	50	#include <netat/routing_tables.h>
	51	#include <netat/at_pcb.h>
	52	#include <netat/aurp.h>
	53
	54	/* */
	55	void AURPsndRDReq(state)
	56	aurp_state_t *state;
	57	{
	58	int msize;
	59	gbuf_t *m;
	60	aurp_hdr_t *hdrp;
	61
	62	if ((state->rcv_state == AURPSTATE_Unconnected) \|\|
	63	(state->snd_state == AURPSTATE_Unconnected))
	64	return;
	65
	66	/* update state info */
	67	state->rcv_state = AURPSTATE_Unconnected;
	68	state->snd_state = AURPSTATE_Unconnected;
	69
	70	/* notify tunnel peer of router going-down for the data receiver side */
	71	msize = sizeof(aurp_hdr_t) + sizeof(short);
	72	if ((m = (gbuf_t *)gbuf_alloc(msize, PRI_MED)) != 0) {
	73	gbuf_wset(m,msize);
	74
	75	/* construct the router down packet */
	76	hdrp = (aurp_hdr_t *)gbuf_rptr(m);
	77	hdrp->connection_id = state->rcv_connection_id;
	78	hdrp->sequence_number = 0;
	79	hdrp->command_code = AURPCMD_RDReq;
	80	hdrp->flags = 0;
	81	(short )(hdrp+1) = AURPERR_NormalConnectionClose;
	82
	83	/* send the packet */
	84	AURPsend(m, AUD_AURP, state->rem_node);
	85	}
86
87	/* notify tunnel peer of router going-down for the data sender side */
88	msize = sizeof(aurp_hdr_t) + sizeof(short);
89	if ((m = (gbuf_t *)gbuf_alloc(msize, PRI_MED)) != 0) {
90	gbuf_wset(m,msize);
91
92	/* construct the router down packet */
93	hdrp = (aurp_hdr_t *)gbuf_rptr(m);
94	hdrp->connection_id = state->snd_connection_id;
95	hdrp->sequence_number = state->snd_sequence_number;
96	hdrp->command_code = AURPCMD_RDReq;
97	hdrp->flags = 0;
98	(short )(hdrp+1) = AURPERR_NormalConnectionClose;
99
100	/* send the packet */
101	AURPsend(m, AUD_AURP, state->rem_node);
102	}
103	}
104
105	/* */
106	void AURPrcvRDReq(state, m)
107	aurp_state_t *state;
108	gbuf_t *m;
109	{
110	/* update state info */
111	state->rcv_state = AURPSTATE_Unconnected;
112	state->snd_state = AURPSTATE_Unconnected;
113	AURPcleanup(state);
114
115	/* purge all routes associated with the tunnel peer going-down */
116	AURPpurgeri(state->rem_node);
117
118	/* respond to the going-down peer with an RI Ack packet */
119	AURPsndRIAck(state, m, 0);
120	}