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

/*
 * Copyright (c) 2000-2004 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) 1997-1999 Apple Computer, Inc.
 *	All Rights Reserved.
 */
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
 * Copyright (c) 1982, 1986, 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)at_pcb.c	8.2 (Berkeley) 1/4/94
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <kern/kern_types.h>
#include <kern/zalloc.h>
#include <kern/queue.h>

#include <net/if.h>

#include <netat/sysglue.h>
#include <netat/appletalk.h>
#include <netat/ddp.h>
#include <netat/at_pcb.h>
#include <netat/debug.h>
#include <netat/at_var.h>
#include <netat/adsp.h>
#include <netat/adsp_internal.h>

extern struct atpcb ddp_head;
extern struct atpcb *atp_inputQ[];
extern CCB *adsp_inputQ[];
extern at_ifaddr_t *ifID_home;
extern struct {
  void (*func)();
  } ddp_handler[];

int DDP_chksum_on = FALSE;
int DDP_slfsnd_on = FALSE;

zone_t atpcb_zone;

void at_memzone_init()
{
	vm_size_t str_size;

	str_size = (vm_size_t)sizeof(struct atpcb);
	atpcb_zone = (zone_t)zinit(str_size, 1000*str_size, 8192, "atpcb zone");
}

int at_pcballoc(so, head)
	struct socket *so;
	struct atpcb *head;
{
	register struct atpcb *pcb;

	pcb = (struct atpcb *)zalloc(atpcb_zone);
	if (pcb == NULL)
		return (ENOBUFS);
	bzero((caddr_t)pcb, sizeof(*pcb));

	/* set the flags to the system defaults */
	if (DDP_chksum_on)
		pcb->ddp_flags |= DDPFLG_CHKSUM;
	else
		pcb->ddp_flags &= ~DDPFLG_CHKSUM;
	if (DDP_slfsnd_on)
		pcb->ddp_flags |= DDPFLG_SLFSND;
	else
		pcb->ddp_flags &= ~DDPFLG_SLFSND;

	pcb->atpcb_head = head;
	pcb->atpcb_socket = so;
	atalk_lock();	/* makes sure the list is locked while inserting atpcb */
	if (head)
	    insque((queue_t)pcb, (queue_t)head);
	so->so_pcb = (caddr_t)pcb;
	atalk_unlock();

	return (0);
}

int at_pcbdetach(pcb)
	struct atpcb *pcb;
{
	struct socket *so = pcb->atpcb_socket;

	/* Notify NBP that we are closing this DDP socket */
	if (pcb->lport) {
		ddp_notify_nbp(pcb->lport, pcb->pid, pcb->ddptype);
		pcb->lport = 0;
	}

	so->so_pcb = 0;
	so->so_flags |= SOF_PCBCLEARING;
	if ((pcb->atpcb_next) && (pcb->atpcb_prev))
	    remque((queue_t)pcb);
	zfree(atpcb_zone, pcb);
	sofree(so);
	return(0);
}

int ddp_socket_inuse(ddpsock, proto)
          u_char ddpsock, proto;
{
          struct atpcb *pcb;

	  if ((!proto || (proto == DDP_ATP)) && atp_inputQ[ddpsock])
	  	return TRUE;
          if ((!proto || (proto == DDP_ADSP)) && adsp_inputQ[ddpsock])
                return TRUE;
          if (ddp_handler[ddpsock].func)
                return TRUE;
          for (pcb = ddp_head.atpcb_next; pcb != &ddp_head;
	       pcb = pcb->atpcb_next) {
	  	if (pcb->lport == ddpsock &&
		    (!pcb->ddptype || !proto || (pcb->ddptype == proto)))
			return TRUE;
	  }
	  return FALSE;
}

int at_pcbbind(pcb, nam)
	register struct atpcb *pcb;
	struct sockaddr *nam;
{
	register struct sockaddr_at *local = (struct sockaddr_at *) nam;
	u_char ddpsock = local->sat_port;

	if ((!ifID_home) || (local->sat_family != AF_APPLETALK))
		return(EADDRNOTAVAIL);

	if (pcb->lport != ATADDR_ANYPORT ||
	    pcb->laddr.s_node != ATADDR_ANYNODE ||
	    pcb->laddr.s_net != ATADDR_ANYNET)
		return(EINVAL);

	/* Request for dynamic socket? */
	if (ddpsock == 0) {
		/* Search table for free one */
		/* *** borrow IP algorithm, instead? *** */
		for (ddpsock = DDP_SOCKET_LAST; 
		     ddpsock >= (DDP_SOCKET_1st_DYNAMIC + 1); 
		     				/* sip has 1st */
		     ddpsock--) {
			if (! ddp_socket_inuse(ddpsock, pcb->ddptype))
				break;
		}
		if (ddpsock < (DDP_SOCKET_1st_DYNAMIC + 1))
			return(EADDRNOTAVAIL);	/* Error if no free sockets */
	} else {
		/* Asking to open a socket by its number.  
		   Check if its legal & free. */
		if (ddpsock > DDP_SOCKET_LAST)
			return(EINVAL);
		if (ddp_socket_inuse(ddpsock, pcb->ddptype))
			return(EADDRNOTAVAIL);
	}

	pcb->lport = ddpsock;
	/* if address is specified, make sure address matches one of the 
	   interfaces configured for AppleTalk */
	if (local->sat_addr.s_net || local->sat_addr.s_node) {
	    if (MULTIHOME_MODE) {
		at_ifaddr_t *ifID;
		TAILQ_FOREACH(ifID, &at_ifQueueHd, aa_link) {
			if (ifID->ifThisNode.s_net == local->sat_addr.s_net &&
			    ifID->ifThisNode.s_node == local->sat_addr.s_node) {
				pcb->laddr = local->sat_addr;
				return(0);
			}
		}
		return(EINVAL);
	    } else {
	      /* for single-port and router modes if the local address is
		 specified, it must match the default interface, which is
		 what will be put into packets' source address anyway */
		if (ifID_home->ifThisNode.s_net == local->sat_addr.s_net &&
		    ifID_home->ifThisNode.s_node == local->sat_addr.s_node) {
			pcb->laddr = local->sat_addr;
			return(0);
		}
		return(EINVAL);

	    }
	}
	return(0);
}
Commit	Line	Data
1c79356b	1	/*
5d5c5d0d A	2	* Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
5d5c5d0d A	3	*
8f6c56a5	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
8f6c56a5 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.
	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
8ad349bb	24	* limitations under the License.
8f6c56a5 A	25	*
8f6c56a5 A	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28
	29	/*
	30	* Copyright (c) 1997-1999 Apple Computer, Inc.
	31	* All Rights Reserved.
	32	*/
	33	/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
	34	/*
	35	* Copyright (c) 1982, 1986, 1991, 1993
	36	* The Regents of the University of California. All rights reserved.
	37	*
	38	* Redistribution and use in source and binary forms, with or without
	39	* modification, are permitted provided that the following conditions
	40	* are met:
	41	* 1. Redistributions of source code must retain the above copyright
	42	* notice, this list of conditions and the following disclaimer.
	43	* 2. Redistributions in binary form must reproduce the above copyright
	44	* notice, this list of conditions and the following disclaimer in the
	45	* documentation and/or other materials provided with the distribution.
	46	* 3. All advertising materials mentioning features or use of this software
	47	* must display the following acknowledgement:
	48	* This product includes software developed by the University of
	49	* California, Berkeley and its contributors.
	50	* 4. Neither the name of the University nor the names of its contributors
	51	* may be used to endorse or promote products derived from this software
	52	* without specific prior written permission.
	53	*
	54	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	55	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	56	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	57	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	58	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	59	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	60	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	61	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	62	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	63	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	64	* SUCH DAMAGE.
	65	*
	66	* @(#)at_pcb.c 8.2 (Berkeley) 1/4/94
	67	*/
	68
	69	#include <sys/param.h>
	70	#include <sys/systm.h>
	71	#include <sys/malloc.h>
	72	#include <sys/mbuf.h>
	73	#include <sys/protosw.h>
	74	#include <sys/socket.h>
	75	#include <sys/socketvar.h>
	76	#include <sys/ioctl.h>
	77	#include <sys/errno.h>
	78	#include <sys/time.h>
	79	#include <sys/proc.h>
	80	#include <kern/kern_types.h>
	81	#include <kern/zalloc.h>
	82	#include <kern/queue.h>
	83
	84	#include <net/if.h>
	85
	86	#include <netat/sysglue.h>
	87	#include <netat/appletalk.h>
	88	#include <netat/ddp.h>
	89	#include <netat/at_pcb.h>
	90	#include <netat/debug.h>
91	#include <netat/at_var.h>
92	#include <netat/adsp.h>
93	#include <netat/adsp_internal.h>
94
95	extern struct atpcb ddp_head;
96	extern struct atpcb *atp_inputQ[];
97	extern CCB *adsp_inputQ[];
98	extern at_ifaddr_t *ifID_home;
99	extern struct {
100	void (*func)();
101	} ddp_handler[];
102
103	int DDP_chksum_on = FALSE;
104	int DDP_slfsnd_on = FALSE;
105
106	zone_t atpcb_zone;
107
108	void at_memzone_init()
109	{
110	vm_size_t str_size;
111
112	str_size = (vm_size_t)sizeof(struct atpcb);
113	atpcb_zone = (zone_t)zinit(str_size, 1000*str_size, 8192, "atpcb zone");
114	}
115
116	int at_pcballoc(so, head)
117	struct socket *so;
118	struct atpcb *head;
119	{
120	register struct atpcb *pcb;
121
122	pcb = (struct atpcb *)zalloc(atpcb_zone);
123	if (pcb == NULL)
124	return (ENOBUFS);
125	bzero((caddr_t)pcb, sizeof(*pcb));
126
127	/* set the flags to the system defaults */
128	if (DDP_chksum_on)
129	pcb->ddp_flags \|= DDPFLG_CHKSUM;
130	else
131	pcb->ddp_flags &= ~DDPFLG_CHKSUM;
132	if (DDP_slfsnd_on)
133	pcb->ddp_flags \|= DDPFLG_SLFSND;
134	else
135	pcb->ddp_flags &= ~DDPFLG_SLFSND;
136
137	pcb->atpcb_head = head;
138	pcb->atpcb_socket = so;
91447636	139	atalk_lock(); /* makes sure the list is locked while inserting atpcb */
1c79356b A	140	if (head)
	141	insque((queue_t)pcb, (queue_t)head);
	142	so->so_pcb = (caddr_t)pcb;
91447636	143	atalk_unlock();
1c79356b A	144
	145	return (0);
	146	}
	147
	148	int at_pcbdetach(pcb)
	149	struct atpcb *pcb;
	150	{
	151	struct socket *so = pcb->atpcb_socket;
	152
	153	/* Notify NBP that we are closing this DDP socket */
	154	if (pcb->lport) {
	155	ddp_notify_nbp(pcb->lport, pcb->pid, pcb->ddptype);
	156	pcb->lport = 0;
	157	}
	158
	159	so->so_pcb = 0;
91447636	160	so->so_flags \|= SOF_PCBCLEARING;
1c79356b A	161	if ((pcb->atpcb_next) && (pcb->atpcb_prev))
1c79356b A	162	remque((queue_t)pcb);
91447636	163	zfree(atpcb_zone, pcb);
1c79356b A	164	sofree(so);
	165	return(0);
	166	}
	167
	168	int ddp_socket_inuse(ddpsock, proto)
	169	u_char ddpsock, proto;
	170	{
	171	struct atpcb *pcb;
	172
	173	if ((!proto \|\| (proto == DDP_ATP)) && atp_inputQ[ddpsock])
	174	return TRUE;
	175	if ((!proto \|\| (proto == DDP_ADSP)) && adsp_inputQ[ddpsock])
	176	return TRUE;
	177	if (ddp_handler[ddpsock].func)
	178	return TRUE;
	179	for (pcb = ddp_head.atpcb_next; pcb != &ddp_head;
	180	pcb = pcb->atpcb_next) {
	181	if (pcb->lport == ddpsock &&
	182	(!pcb->ddptype \|\| !proto \|\| (pcb->ddptype == proto)))
	183	return TRUE;
	184	}
	185	return FALSE;
	186	}
	187
	188	int at_pcbbind(pcb, nam)
	189	register struct atpcb *pcb;
	190	struct sockaddr *nam;
	191	{
1c79356b A	192	register struct sockaddr_at local = (struct sockaddr_at ) nam;
	193	u_char ddpsock = local->sat_port;
	194
	195	if ((!ifID_home) \|\| (local->sat_family != AF_APPLETALK))
	196	return(EADDRNOTAVAIL);
	197
	198	if (pcb->lport != ATADDR_ANYPORT \|\|
	199	pcb->laddr.s_node != ATADDR_ANYNODE \|\|
	200	pcb->laddr.s_net != ATADDR_ANYNET)
	201	return(EINVAL);
	202
	203	/* Request for dynamic socket? */
	204	if (ddpsock == 0) {
	205	/* Search table for free one */
	206	/* * borrow IP algorithm, instead? * */
	207	for (ddpsock = DDP_SOCKET_LAST;
	208	ddpsock >= (DDP_SOCKET_1st_DYNAMIC + 1);
	209	/* sip has 1st */
	210	ddpsock--) {
	211	if (! ddp_socket_inuse(ddpsock, pcb->ddptype))
	212	break;
	213	}
	214	if (ddpsock < (DDP_SOCKET_1st_DYNAMIC + 1))
	215	return(EADDRNOTAVAIL); /* Error if no free sockets */
	216	} else {
	217	/* Asking to open a socket by its number.
	218	Check if its legal & free. */
	219	if (ddpsock > DDP_SOCKET_LAST)
	220	return(EINVAL);
	221	if (ddp_socket_inuse(ddpsock, pcb->ddptype))
	222	return(EADDRNOTAVAIL);
	223	}
	224
	225	pcb->lport = ddpsock;
	226	/* if address is specified, make sure address matches one of the
	227	interfaces configured for AppleTalk */
	228	if (local->sat_addr.s_net \|\| local->sat_addr.s_node) {
	229	if (MULTIHOME_MODE) {
	230	at_ifaddr_t *ifID;
	231	TAILQ_FOREACH(ifID, &at_ifQueueHd, aa_link) {
	232	if (ifID->ifThisNode.s_net == local->sat_addr.s_net &&
	233	ifID->ifThisNode.s_node == local->sat_addr.s_node) {
	234	pcb->laddr = local->sat_addr;
	235	return(0);
	236	}
	237	}
	238	return(EINVAL);
	239	} else {
	240	/* for single-port and router modes if the local address is
	241	specified, it must match the default interface, which is
	242	what will be put into packets' source address anyway */
	243	if (ifID_home->ifThisNode.s_net == local->sat_addr.s_net &&
	244	ifID_home->ifThisNode.s_node == local->sat_addr.s_node) {
	245	pcb->laddr = local->sat_addr;
	246	return(0);
	247	}
	248	return(EINVAL);
	249
	250	}
	251	}
	252	return(0);
	253	}