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

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This 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 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	1	/*
5d5c5d0d A	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
5d5c5d0d A	3	*
6601e61a	4	* @APPLE_LICENSE_HEADER_START@
1c79356b	5	*
6601e61a A	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
8f6c56a5	11	*
6601e61a A	12	* This Original Code and all software distributed under the License are
6601e61a A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
6601e61a A	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
8f6c56a5	19	*
6601e61a	20	* @APPLE_LICENSE_HEADER_END@
1c79356b A	21	*/
	22	/*
	23	* Copyright (c) 1996 Apple Computer, Inc.
	24	*
	25	* Created April 8, 1996 by Tuyen Nguyen
	26	* Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
	27	*
	28	* File: rd.c
	29	*/
	30	#include <sys/errno.h>
	31	#include <sys/types.h>
	32	#include <sys/param.h>
	33	#include <machine/spl.h>
	34	#include <sys/systm.h>
	35	#include <sys/kernel.h>
	36	#include <sys/proc.h>
	37	#include <sys/filedesc.h>
	38	#include <sys/fcntl.h>
	39	#include <sys/mbuf.h>
	40	#include <sys/socket.h>
	41	#include <sys/socketvar.h>
	42	#include <net/if.h>
	43
	44	#include <netat/sysglue.h>
	45	#include <netat/appletalk.h>
	46	#include <netat/at_var.h>
	47	#include <netat/routing_tables.h>
	48	#include <netat/at_pcb.h>
	49	#include <netat/aurp.h>
	50
	51	/* */
	52	void AURPsndRDReq(state)
	53	aurp_state_t *state;
	54	{
	55	int msize;
	56	gbuf_t *m;
	57	aurp_hdr_t *hdrp;
	58
	59	if ((state->rcv_state == AURPSTATE_Unconnected) \|\|
	60	(state->snd_state == AURPSTATE_Unconnected))
	61	return;
	62
	63	/* update state info */
	64	state->rcv_state = AURPSTATE_Unconnected;
	65	state->snd_state = AURPSTATE_Unconnected;
	66
	67	/* notify tunnel peer of router going-down for the data receiver side */
	68	msize = sizeof(aurp_hdr_t) + sizeof(short);
	69	if ((m = (gbuf_t *)gbuf_alloc(msize, PRI_MED)) != 0) {
	70	gbuf_wset(m,msize);
	71
	72	/* construct the router down packet */
	73	hdrp = (aurp_hdr_t *)gbuf_rptr(m);
	74	hdrp->connection_id = state->rcv_connection_id;
	75	hdrp->sequence_number = 0;
	76	hdrp->command_code = AURPCMD_RDReq;
	77	hdrp->flags = 0;
	78	(short )(hdrp+1) = AURPERR_NormalConnectionClose;
	79
	80	/* send the packet */
	81	AURPsend(m, AUD_AURP, state->rem_node);
	82	}
	83
	84	/* notify tunnel peer of router going-down for the data sender side */
85	msize = sizeof(aurp_hdr_t) + sizeof(short);
86	if ((m = (gbuf_t *)gbuf_alloc(msize, PRI_MED)) != 0) {
87	gbuf_wset(m,msize);
88
89	/* construct the router down packet */
90	hdrp = (aurp_hdr_t *)gbuf_rptr(m);
91	hdrp->connection_id = state->snd_connection_id;
92	hdrp->sequence_number = state->snd_sequence_number;
93	hdrp->command_code = AURPCMD_RDReq;
94	hdrp->flags = 0;
95	(short )(hdrp+1) = AURPERR_NormalConnectionClose;
96
97	/* send the packet */
98	AURPsend(m, AUD_AURP, state->rem_node);
99	}
100	}
101
102	/* */
103	void AURPrcvRDReq(state, m)
104	aurp_state_t *state;
105	gbuf_t *m;
106	{
107	/* update state info */
108	state->rcv_state = AURPSTATE_Unconnected;
109	state->snd_state = AURPSTATE_Unconnected;
110	AURPcleanup(state);
111
112	/* purge all routes associated with the tunnel peer going-down */
113	AURPpurgeri(state->rem_node);
114
115	/* respond to the going-down peer with an RI Ack packet */
116	AURPsndRIAck(state, m, 0);
117	}