[apple/xnu.git] / bsd / netat / drv_dep.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 1994 Apple Computer, Inc.
 * All Rights Reserved.
 *
 * Tuyen A. Nguyen. (December 5, 1994)
 *   Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
 */

#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/ioctl.h>
#include <sys/malloc.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sockio.h>

#include <net/if.h>
#include <net/if_types.h>
#include <net/if_dl.h>
#include <net/ethernet.h>

#include <netat/sysglue.h>
#include <netat/appletalk.h>
#include <netat/at_pcb.h>
#include <netat/at_var.h>
#include <netat/ddp.h>
#include <netat/at_aarp.h>
#include <netat/at_pat.h>
#include <netat/debug.h>

#define DSAP_SNAP 0xaa

extern void gref_init(), atp_init(), atp_link(), atp_unlink();

extern int adspInited;

static llc_header_t	snap_hdr_at = SNAP_HDR_AT;
static llc_header_t	snap_hdr_aarp = SNAP_HDR_AARP;
static unsigned char snap_proto_ddp[5] = SNAP_PROTO_AT;
static unsigned char snap_proto_aarp[5] = SNAP_PROTO_AARP;

static void at_input_packet(protocol_family_t protocol, mbuf_t m);

int pktsIn, pktsOut;

struct ifqueue atalkintrq; 	/* appletalk and aarp packet input queue */

short appletalk_inited = 0;


void atalk_load()
{
	extern lck_mtx_t *domain_proto_mtx;


	atp_init();
	atp_link();
	adspInited = 0;

/*	adsp_init(); 
		for 2225395
		this happens in adsp_open and is undone on ADSP_UNLINK 
*/
	lck_mtx_unlock(domain_proto_mtx);
	proto_register_input(PF_APPLETALK, at_input_packet, NULL);
	lck_mtx_lock(domain_proto_mtx);
} /* atalk_load */

/* Undo everything atalk_load() did. */
void atalk_unload()  /* not currently used */
{
	extern gbuf_t *scb_resource_m;
	extern gbuf_t *atp_resource_m;

	atp_unlink();

#ifdef NOT_YET
	if (scb_resource_m) { 
		gbuf_freem(scb_resource_m);
		scb_resource_m = 0;
		scb_free_list = 0;
	}
	/* allocated in atp_trans_alloc() */
	if (atp_resource_m) {
		gbuf_freem(atp_resource_m);
		atp_resource_m = 0;
		atp_trans_free_list = 0;
	}
#endif

	appletalk_inited = 0;
} /* atalk_unload */

void appletalk_hack_start()
{
	if (!appletalk_inited) {
		atalk_load();
		atalkintrq.ifq_maxlen = IFQ_MAXLEN; 
		appletalk_inited = 1;
	}
} /* appletalk_hack_start */

int pat_output(patp, mlist, dst_addr, type)
	at_ifaddr_t *patp;
	struct mbuf *mlist;			/* packet chain */
	unsigned char *dst_addr;	/* for atalk addr - net # must be in network byte order */
	int 	type;
{
	struct mbuf *m, *m1;
	llc_header_t *llc_header;
	struct sockaddr dst;

	if (! patp->aa_ifp) {
		for (m = mlist; m; m = mlist) {
			mlist = m->m_nextpkt;
			m->m_nextpkt = 0;
			m_freem(m);
		}
		return ENOTREADY;
	}

	/* this is for ether_output */
	dst.sa_family = AF_APPLETALK;
	dst.sa_len = 2 + sizeof(struct etalk_addr);
	bcopy (dst_addr, &dst.sa_data[0], sizeof(struct etalk_addr)); 

	/* packet chains are used on output and can be tested using aufs */
	for (m = mlist; m; m = mlist) {
		mlist = m->m_nextpkt;
		m->m_nextpkt = 0;

		M_PREPEND(m, sizeof(llc_header_t), M_DONTWAIT);
		if (m == 0) {
			continue;
		}

		llc_header = mtod(m, llc_header_t *);
		*llc_header = 
		  (type == AARP_AT_TYPE) ? snap_hdr_aarp : snap_hdr_at;

		for (m->m_pkthdr.len = 0, m1 = m; m1; m1 = m1->m_next)
			m->m_pkthdr.len += m1->m_len;
		m->m_pkthdr.rcvif = 0;

		/* *** Note: AT is sending out mbufs of type MSG_DATA,
		   not MT_DATA.  *** */
#ifdef APPLETALK_DEBUG
		if (m->m_next && 
		    !((m->m_next)->m_flags & M_EXT))
			kprintf("po: mlen= %d, m2len= %d\n", m->m_len, 
				(m->m_next)->m_len);
#endif
		atalk_unlock();
		dlil_output(patp->aa_ifp, PF_APPLETALK, m, NULL, &dst, 0);
		atalk_lock();

		pktsOut++;
	}

	return 0;
} /* pat_output */

static void
at_input_packet(
	__unused protocol_family_t	protocol,
	mbuf_t						m)
{
	struct mbuf *m1;
	struct ifnet *ifp;
	llc_header_t *llc_header;
	at_ifaddr_t *ifID;
	char src[6];
	enet_header_t *enet_header;

	if (!appletalk_inited) {
		m_freem(m);
		return;
	}

	if ((m->m_flags & M_PKTHDR) == 0) {
#ifdef APPLETALK_DEBUG
		kprintf("atalkintr: no HDR on packet received");
#endif
		m_freem(m);
		return;
	}

	  /* make sure the interface this packet was received on is configured
	     for AppleTalk */
	  ifp = m->m_pkthdr.rcvif;
	  TAILQ_FOREACH(ifID, &at_ifQueueHd, aa_link) {
		if (ifID->aa_ifp && (ifID->aa_ifp == ifp)) 
			break;
	  }
	  /* if we didn't find a matching interface */
	  if (!ifID) {
		m_freem(m);
		return; /* was EAFNOSUPPORT */
	  }

	  /* make sure the entire packet header is in the current mbuf */
	  if (m->m_len < ENET_LLC_SIZE &&
	      (m = m_pullup(m, ENET_LLC_SIZE)) == 0) {
#ifdef APPLETALK_DEBUG
		kprintf("atalkintr: packet too small\n");
#endif
		m_freem(m);
		return;
	  }
	  enet_header = mtod(m, enet_header_t *);

	  /* Ignore multicast packets from local station */
	  /* *** Note: code for IFTYPE_TOKENTALK may be needed here. *** */
	  if (ifID->aa_ifp->if_type == IFT_ETHER ||
		ifID->aa_ifp->if_type == IFT_L2VLAN ||
		ifID->aa_ifp->if_type == IFT_IEEE8023ADLAG) {
		bcopy((char *)enet_header->src, src, sizeof(src));

#ifdef COMMENT  /* In order to receive packets from the Blue Box, we cannot 
		   reject packets whose source address matches our local address.
		*/
		if ((enet_header->dst[0] & 1) && 
		    (bcmp(src, ifID->xaddr, sizeof(src)) == 0)) {
		  /* Packet rejected: think it's a local mcast. */
		  m_freem(m);
		  return; /* was EAFNOSUPPORT */
		}
#endif /* COMMENT */

		llc_header = (llc_header_t *)(enet_header+1);

		/* advance the mbuf pointers past the ethernet header */
		m->m_data += ENET_LLC_SIZE;
		m->m_len -= ENET_LLC_SIZE;

		pktsIn++;

		if (LLC_PROTO_EQUAL(llc_header->protocol,snap_proto_aarp)) {
	       		(void)aarp_rcv_pkt(mtod(m, aarp_pkt_t *), ifID);
			m_freem(m);
		} 
		else if (LLC_PROTO_EQUAL(llc_header->protocol, snap_proto_ddp)) {
			/* if we're a router take all pkts */
			if (!ROUTING_MODE) {
			  if (aarp_chk_addr(mtod(m, at_ddp_t  *), ifID)
			      == AARP_ERR_NOT_OURS) {
#ifdef APPLETALK_DEBUG
			    kprintf("pat_input: Packet Rejected: not for us? dest=%x.%x.%x.%x.%x.%x LLC_PROTO= %02x%02x\n",
				    enet_header->dst[0], enet_header->dst[1], 
				    enet_header->dst[2], enet_header->dst[3], 
				    enet_header->dst[4], enet_header->dst[5], 
				    llc_header->protocol[3],
				    llc_header->protocol[4]);
#endif
			    m_freem(m);
			    return; /* was EAFNOSUPPORT */
			  }
			}
			MCHTYPE(m, MSG_DATA); /* set the mbuf type */

			ifID->stats.rcv_packets++;
			for (m1 = m; m1; m1 = m1->m_next)
				ifID->stats.rcv_bytes += m1->m_len;

			if (!MULTIPORT_MODE)
				ddp_glean(m, ifID, src);

			ddp_input(m, ifID);
		} else {
#ifdef APPLETALK_DEBUG
		  	kprintf("pat_input: Packet Rejected: wrong LLC_PROTO = %02x%02x\n",
				llc_header->protocol[3],
				llc_header->protocol[4]);
#endif
			m_freem(m);
		}
	}
}
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
37839358 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.
1c79356b	11	*
37839358 A	12	* This Original Code and all software distributed under the License are
37839358 A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
37839358 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.
1c79356b A	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* Copyright 1994 Apple Computer, Inc.
	24	* All Rights Reserved.
	25	*
	26	* Tuyen A. Nguyen. (December 5, 1994)
	27	* Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
	28	*/
	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/ioctl.h>
	41	#include <sys/malloc.h>
	42	#include <sys/socket.h>
	43	#include <sys/socketvar.h>
	44	#include <sys/sockio.h>
	45
	46	#include <net/if.h>
	47	#include <net/if_types.h>
	48	#include <net/if_dl.h>
1c79356b	49	#include <net/ethernet.h>
1c79356b A	50
	51	#include <netat/sysglue.h>
	52	#include <netat/appletalk.h>
	53	#include <netat/at_pcb.h>
	54	#include <netat/at_var.h>
	55	#include <netat/ddp.h>
	56	#include <netat/at_aarp.h>
	57	#include <netat/at_pat.h>
	58	#include <netat/debug.h>
	59
	60	#define DSAP_SNAP 0xaa
	61
	62	extern void gref_init(), atp_init(), atp_link(), atp_unlink();
	63
	64	extern int adspInited;
	65
	66	static llc_header_t snap_hdr_at = SNAP_HDR_AT;
	67	static llc_header_t snap_hdr_aarp = SNAP_HDR_AARP;
	68	static unsigned char snap_proto_ddp[5] = SNAP_PROTO_AT;
	69	static unsigned char snap_proto_aarp[5] = SNAP_PROTO_AARP;
	70
91447636 A	71	static void at_input_packet(protocol_family_t protocol, mbuf_t m);
91447636 A	72
1c79356b A	73	int pktsIn, pktsOut;
	74
	75	struct ifqueue atalkintrq; /* appletalk and aarp packet input queue */
	76
	77	short appletalk_inited = 0;
	78
1c79356b	79
1c79356b A	80
	81	void atalk_load()
	82	{
91447636	83	extern lck_mtx_t *domain_proto_mtx;
1c79356b	84
1c79356b A	85
	86	atp_init();
	87	atp_link();
	88	adspInited = 0;
	89
	90	/* adsp_init();
	91	for 2225395
	92	this happens in adsp_open and is undone on ADSP_UNLINK
	93	*/
91447636 A	94	lck_mtx_unlock(domain_proto_mtx);
	95	proto_register_input(PF_APPLETALK, at_input_packet, NULL);
	96	lck_mtx_lock(domain_proto_mtx);
1c79356b A	97	} /* atalk_load */
	98
	99	/* Undo everything atalk_load() did. */
	100	void atalk_unload() /* not currently used */
	101	{
	102	extern gbuf_t *scb_resource_m;
	103	extern gbuf_t *atp_resource_m;
	104
1c79356b A	105	atp_unlink();
	106
	107	#ifdef NOT_YET
	108	if (scb_resource_m) {
	109	gbuf_freem(scb_resource_m);
	110	scb_resource_m = 0;
	111	scb_free_list = 0;
	112	}
	113	/* allocated in atp_trans_alloc() */
	114	if (atp_resource_m) {
	115	gbuf_freem(atp_resource_m);
	116	atp_resource_m = 0;
	117	atp_trans_free_list = 0;
	118	}
	119	#endif
	120
	121	appletalk_inited = 0;
	122	} /* atalk_unload */
	123
	124	void appletalk_hack_start()
	125	{
	126	if (!appletalk_inited) {
	127	atalk_load();
	128	atalkintrq.ifq_maxlen = IFQ_MAXLEN;
	129	appletalk_inited = 1;
	130	}
	131	} /* appletalk_hack_start */
	132
	133	int pat_output(patp, mlist, dst_addr, type)
	134	at_ifaddr_t *patp;
	135	struct mbuf mlist; / packet chain */
c0fea474	136	unsigned char dst_addr; / for atalk addr - net # must be in network byte order */
1c79356b A	137	int type;
	138	{
	139	struct mbuf m, m1;
	140	llc_header_t *llc_header;
	141	struct sockaddr dst;
	142
	143	if (! patp->aa_ifp) {
	144	for (m = mlist; m; m = mlist) {
	145	mlist = m->m_nextpkt;
	146	m->m_nextpkt = 0;
	147	m_freem(m);
	148	}
	149	return ENOTREADY;
	150	}
	151
	152	/* this is for ether_output */
	153	dst.sa_family = AF_APPLETALK;
	154	dst.sa_len = 2 + sizeof(struct etalk_addr);
	155	bcopy (dst_addr, &dst.sa_data[0], sizeof(struct etalk_addr));
	156
	157	/* packet chains are used on output and can be tested using aufs */
	158	for (m = mlist; m; m = mlist) {
	159	mlist = m->m_nextpkt;
	160	m->m_nextpkt = 0;
	161
9bccf70c	162	M_PREPEND(m, sizeof(llc_header_t), M_DONTWAIT);
1c79356b A	163	if (m == 0) {
	164	continue;
	165	}
	166
	167	llc_header = mtod(m, llc_header_t *);
	168	*llc_header =
	169	(type == AARP_AT_TYPE) ? snap_hdr_aarp : snap_hdr_at;
	170
	171	for (m->m_pkthdr.len = 0, m1 = m; m1; m1 = m1->m_next)
	172	m->m_pkthdr.len += m1->m_len;
	173	m->m_pkthdr.rcvif = 0;
	174
	175	/* *** Note: AT is sending out mbufs of type MSG_DATA,
	176	not MT_DATA. *** */
	177	#ifdef APPLETALK_DEBUG
	178	if (m->m_next &&
	179	!((m->m_next)->m_flags & M_EXT))
	180	kprintf("po: mlen= %d, m2len= %d\n", m->m_len,
	181	(m->m_next)->m_len);
	182	#endif
91447636 A	183	atalk_unlock();
	184	dlil_output(patp->aa_ifp, PF_APPLETALK, m, NULL, &dst, 0);
	185	atalk_lock();
1c79356b A	186
	187	pktsOut++;
	188	}
	189
	190	return 0;
	191	} /* pat_output */
	192
91447636 A	193	static void
	194	at_input_packet(
	195	__unused protocol_family_t protocol,
	196	mbuf_t m)
1c79356b	197	{
91447636	198	struct mbuf *m1;
1c79356b	199	struct ifnet *ifp;
1c79356b A	200	llc_header_t *llc_header;
	201	at_ifaddr_t *ifID;
	202	char src[6];
	203	enet_header_t *enet_header;
1c79356b	204
91447636	205	if (!appletalk_inited) {
1c79356b	206	m_freem(m);
91447636 A	207	return;
91447636 A	208	}
1c79356b	209
91447636	210	if ((m->m_flags & M_PKTHDR) == 0) {
1c79356b	211	#ifdef APPLETALK_DEBUG
91447636	212	kprintf("atalkintr: no HDR on packet received");
1c79356b A	213	#endif
1c79356b A	214	m_freem(m);
91447636 A	215	return;
91447636 A	216	}
1c79356b A	217
	218	/* make sure the interface this packet was received on is configured
	219	for AppleTalk */
	220	ifp = m->m_pkthdr.rcvif;
	221	TAILQ_FOREACH(ifID, &at_ifQueueHd, aa_link) {
	222	if (ifID->aa_ifp && (ifID->aa_ifp == ifp))
	223	break;
	224	}
	225	/* if we didn't find a matching interface */
	226	if (!ifID) {
	227	m_freem(m);
91447636	228	return; /* was EAFNOSUPPORT */
1c79356b A	229	}
	230
	231	/* make sure the entire packet header is in the current mbuf */
	232	if (m->m_len < ENET_LLC_SIZE &&
	233	(m = m_pullup(m, ENET_LLC_SIZE)) == 0) {
	234	#ifdef APPLETALK_DEBUG
	235	kprintf("atalkintr: packet too small\n");
	236	#endif
	237	m_freem(m);
91447636	238	return;
1c79356b A	239	}
	240	enet_header = mtod(m, enet_header_t *);
	241
	242	/* Ignore multicast packets from local station */
	243	/* * Note: code for IFTYPE_TOKENTALK may be needed here. * */
91447636 A	244	if (ifID->aa_ifp->if_type == IFT_ETHER \|\|
	245	ifID->aa_ifp->if_type == IFT_L2VLAN \|\|
	246	ifID->aa_ifp->if_type == IFT_IEEE8023ADLAG) {
1c79356b A	247	bcopy((char *)enet_header->src, src, sizeof(src));
	248
	249	#ifdef COMMENT /* In order to receive packets from the Blue Box, we cannot
	250	reject packets whose source address matches our local address.
	251	*/
	252	if ((enet_header->dst[0] & 1) &&
	253	(bcmp(src, ifID->xaddr, sizeof(src)) == 0)) {
	254	/* Packet rejected: think it's a local mcast. */
	255	m_freem(m);
91447636	256	return; /* was EAFNOSUPPORT */
1c79356b	257	}
55e303ae	258	#endif /* COMMENT */
1c79356b A	259
	260	llc_header = (llc_header_t *)(enet_header+1);
	261
	262	/* advance the mbuf pointers past the ethernet header */
	263	m->m_data += ENET_LLC_SIZE;
	264	m->m_len -= ENET_LLC_SIZE;
	265
	266	pktsIn++;
	267
	268	if (LLC_PROTO_EQUAL(llc_header->protocol,snap_proto_aarp)) {
	269	(void)aarp_rcv_pkt(mtod(m, aarp_pkt_t *), ifID);
	270	m_freem(m);
	271	}
	272	else if (LLC_PROTO_EQUAL(llc_header->protocol, snap_proto_ddp)) {
	273	/* if we're a router take all pkts */
	274	if (!ROUTING_MODE) {
	275	if (aarp_chk_addr(mtod(m, at_ddp_t *), ifID)
	276	== AARP_ERR_NOT_OURS) {
	277	#ifdef APPLETALK_DEBUG
	278	kprintf("pat_input: Packet Rejected: not for us? dest=%x.%x.%x.%x.%x.%x LLC_PROTO= %02x%02x\n",
	279	enet_header->dst[0], enet_header->dst[1],
	280	enet_header->dst[2], enet_header->dst[3],
	281	enet_header->dst[4], enet_header->dst[5],
	282	llc_header->protocol[3],
	283	llc_header->protocol[4]);
	284	#endif
	285	m_freem(m);
91447636	286	return; /* was EAFNOSUPPORT */
1c79356b A	287	}
	288	}
	289	MCHTYPE(m, MSG_DATA); /* set the mbuf type */
	290
	291	ifID->stats.rcv_packets++;
	292	for (m1 = m; m1; m1 = m1->m_next)
	293	ifID->stats.rcv_bytes += m1->m_len;
	294
	295	if (!MULTIPORT_MODE)
	296	ddp_glean(m, ifID, src);
	297
	298	ddp_input(m, ifID);
	299	} else {
	300	#ifdef APPLETALK_DEBUG
	301	kprintf("pat_input: Packet Rejected: wrong LLC_PROTO = %02x%02x\n",
	302	llc_header->protocol[3],
	303	llc_header->protocol[4]);
	304	#endif
	305	m_freem(m);
	306	}
1c79356b	307	}
91447636	308	}