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

/*
 * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
 * 
 * @APPLE_LICENSE_OSREFERENCE_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_LICENSE_OSREFERENCE_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;

extern atlock_t 
	ddpall_lock, ddpinp_lock, arpinp_lock, refall_lock, nve_lock,
  	aspall_lock, asptmo_lock, atpall_lock, atptmo_lock, atpgen_lock;

extern int (*sys_ATsocket )(), (*sys_ATgetmsg)(), (*sys_ATputmsg)();
extern int (*sys_ATPsndreq)(), (*sys_ATPsndrsp)();
extern int (*sys_ATPgetreq)(), (*sys_ATPgetrsp)();

void atalk_load()
{
	extern int _ATsocket(), _ATgetmsg(), _ATputmsg();
	extern int _ATPsndreq(), _ATPsndrsp(), _ATPgetreq(), _ATPgetrsp();
	extern lck_mtx_t *domain_proto_mtx;

	sys_ATsocket  = _ATsocket;
	sys_ATgetmsg  = _ATgetmsg;
	sys_ATputmsg  = _ATputmsg;
	sys_ATPsndreq = _ATPsndreq;
	sys_ATPsndrsp = _ATPsndrsp;
	sys_ATPgetreq = _ATPgetreq;
	sys_ATPgetrsp = _ATPgetrsp;

	ATLOCKINIT(ddpall_lock);
	ATLOCKINIT(ddpinp_lock);
	ATLOCKINIT(arpinp_lock);
	ATLOCKINIT(refall_lock);
	ATLOCKINIT(aspall_lock);
	ATLOCKINIT(asptmo_lock);
	ATLOCKINIT(atpall_lock);
	ATLOCKINIT(atptmo_lock);
	ATLOCKINIT(atpgen_lock);
	ATLOCKINIT(nve_lock);

	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;

	sys_ATsocket  = 0;
	sys_ATgetmsg  = 0;
	sys_ATputmsg  = 0;
	sys_ATPsndreq = 0;
	sys_ATPsndrsp = 0;
	sys_ATPgetreq = 0;
	sys_ATPgetrsp = 0;

	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;
	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	1	/*
8ad349bb	2	* Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
1c79356b	3	*
8ad349bb	4	* @APPLE_LICENSE_OSREFERENCE_HEADER_START@
1c79356b	5	*
8ad349bb 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
	10	* License may not be used to create, or enable the creation or
	11	* redistribution of, unlawful or unlicensed copies of an Apple operating
	12	* system, or to circumvent, violate, or enable the circumvention or
	13	* violation of, any terms of an Apple operating system software license
	14	* agreement.
	15	*
	16	* Please obtain a copy of the License at
	17	* http://www.opensource.apple.com/apsl/ and read it before using this
	18	* file.
	19	*
	20	* The Original Code and all software distributed under the License are
	21	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	22	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	23	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	24	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	25	* Please see the License for the specific language governing rights and
	26	* limitations under the License.
	27	*
	28	* @APPLE_LICENSE_OSREFERENCE_HEADER_END@
1c79356b A	29	*/
	30	/*
	31	* Copyright 1994 Apple Computer, Inc.
	32	* All Rights Reserved.
	33	*
	34	* Tuyen A. Nguyen. (December 5, 1994)
	35	* Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
	36	*/
	37
	38	#include <sys/errno.h>
	39	#include <sys/types.h>
	40	#include <sys/param.h>
	41	#include <machine/spl.h>
	42	#include <sys/systm.h>
	43	#include <sys/kernel.h>
	44	#include <sys/proc.h>
	45	#include <sys/filedesc.h>
	46	#include <sys/fcntl.h>
	47	#include <sys/mbuf.h>
	48	#include <sys/ioctl.h>
	49	#include <sys/malloc.h>
	50	#include <sys/socket.h>
	51	#include <sys/socketvar.h>
	52	#include <sys/sockio.h>
	53
	54	#include <net/if.h>
	55	#include <net/if_types.h>
	56	#include <net/if_dl.h>
1c79356b	57	#include <net/ethernet.h>
1c79356b A	58
	59	#include <netat/sysglue.h>
	60	#include <netat/appletalk.h>
	61	#include <netat/at_pcb.h>
	62	#include <netat/at_var.h>
	63	#include <netat/ddp.h>
	64	#include <netat/at_aarp.h>
	65	#include <netat/at_pat.h>
	66	#include <netat/debug.h>
	67
	68	#define DSAP_SNAP 0xaa
	69
	70	extern void gref_init(), atp_init(), atp_link(), atp_unlink();
	71
	72	extern int adspInited;
	73
	74	static llc_header_t snap_hdr_at = SNAP_HDR_AT;
	75	static llc_header_t snap_hdr_aarp = SNAP_HDR_AARP;
	76	static unsigned char snap_proto_ddp[5] = SNAP_PROTO_AT;
	77	static unsigned char snap_proto_aarp[5] = SNAP_PROTO_AARP;
	78
91447636 A	79	static void at_input_packet(protocol_family_t protocol, mbuf_t m);
91447636 A	80
1c79356b A	81	int pktsIn, pktsOut;
	82
	83	struct ifqueue atalkintrq; /* appletalk and aarp packet input queue */
	84
	85	short appletalk_inited = 0;
	86
8ad349bb A	87	extern atlock_t
	88	ddpall_lock, ddpinp_lock, arpinp_lock, refall_lock, nve_lock,
	89	aspall_lock, asptmo_lock, atpall_lock, atptmo_lock, atpgen_lock;
1c79356b	90
8ad349bb A	91	extern int (sys_ATsocket )(), (sys_ATgetmsg)(), (*sys_ATputmsg)();
	92	extern int (sys_ATPsndreq)(), (sys_ATPsndrsp)();
	93	extern int (sys_ATPgetreq)(), (sys_ATPgetrsp)();
1c79356b A	94
	95	void atalk_load()
	96	{
8ad349bb A	97	extern int _ATsocket(), _ATgetmsg(), _ATputmsg();
8ad349bb A	98	extern int _ATPsndreq(), _ATPsndrsp(), _ATPgetreq(), _ATPgetrsp();
91447636	99	extern lck_mtx_t *domain_proto_mtx;
1c79356b	100
8ad349bb A	101	sys_ATsocket = _ATsocket;
	102	sys_ATgetmsg = _ATgetmsg;
	103	sys_ATputmsg = _ATputmsg;
	104	sys_ATPsndreq = _ATPsndreq;
	105	sys_ATPsndrsp = _ATPsndrsp;
	106	sys_ATPgetreq = _ATPgetreq;
	107	sys_ATPgetrsp = _ATPgetrsp;
	108
	109	ATLOCKINIT(ddpall_lock);
	110	ATLOCKINIT(ddpinp_lock);
	111	ATLOCKINIT(arpinp_lock);
	112	ATLOCKINIT(refall_lock);
	113	ATLOCKINIT(aspall_lock);
	114	ATLOCKINIT(asptmo_lock);
	115	ATLOCKINIT(atpall_lock);
	116	ATLOCKINIT(atptmo_lock);
	117	ATLOCKINIT(atpgen_lock);
	118	ATLOCKINIT(nve_lock);
1c79356b A	119
	120	atp_init();
	121	atp_link();
	122	adspInited = 0;
	123
	124	/* adsp_init();
	125	for 2225395
	126	this happens in adsp_open and is undone on ADSP_UNLINK
	127	*/
91447636 A	128	lck_mtx_unlock(domain_proto_mtx);
	129	proto_register_input(PF_APPLETALK, at_input_packet, NULL);
	130	lck_mtx_lock(domain_proto_mtx);
1c79356b A	131	} /* atalk_load */
	132
	133	/* Undo everything atalk_load() did. */
	134	void atalk_unload() /* not currently used */
	135	{
	136	extern gbuf_t *scb_resource_m;
	137	extern gbuf_t *atp_resource_m;
	138
8ad349bb A	139	sys_ATsocket = 0;
	140	sys_ATgetmsg = 0;
	141	sys_ATputmsg = 0;
	142	sys_ATPsndreq = 0;
	143	sys_ATPsndrsp = 0;
	144	sys_ATPgetreq = 0;
	145	sys_ATPgetrsp = 0;
	146
1c79356b A	147	atp_unlink();
	148
	149	#ifdef NOT_YET
	150	if (scb_resource_m) {
	151	gbuf_freem(scb_resource_m);
	152	scb_resource_m = 0;
	153	scb_free_list = 0;
	154	}
	155	/* allocated in atp_trans_alloc() */
	156	if (atp_resource_m) {
	157	gbuf_freem(atp_resource_m);
	158	atp_resource_m = 0;
	159	atp_trans_free_list = 0;
	160	}
	161	#endif
	162
	163	appletalk_inited = 0;
	164	} /* atalk_unload */
	165
	166	void appletalk_hack_start()
	167	{
	168	if (!appletalk_inited) {
	169	atalk_load();
	170	atalkintrq.ifq_maxlen = IFQ_MAXLEN;
	171	appletalk_inited = 1;
	172	}
	173	} /* appletalk_hack_start */
	174
	175	int pat_output(patp, mlist, dst_addr, type)
	176	at_ifaddr_t *patp;
	177	struct mbuf mlist; / packet chain */
8ad349bb	178	unsigned char *dst_addr;
1c79356b A	179	int type;
	180	{
	181	struct mbuf m, m1;
	182	llc_header_t *llc_header;
	183	struct sockaddr dst;
	184
	185	if (! patp->aa_ifp) {
	186	for (m = mlist; m; m = mlist) {
	187	mlist = m->m_nextpkt;
	188	m->m_nextpkt = 0;
	189	m_freem(m);
	190	}
	191	return ENOTREADY;
	192	}
	193
	194	/* this is for ether_output */
	195	dst.sa_family = AF_APPLETALK;
	196	dst.sa_len = 2 + sizeof(struct etalk_addr);
	197	bcopy (dst_addr, &dst.sa_data[0], sizeof(struct etalk_addr));
	198
	199	/* packet chains are used on output and can be tested using aufs */
	200	for (m = mlist; m; m = mlist) {
	201	mlist = m->m_nextpkt;
	202	m->m_nextpkt = 0;
	203
9bccf70c	204	M_PREPEND(m, sizeof(llc_header_t), M_DONTWAIT);
1c79356b A	205	if (m == 0) {
	206	continue;
	207	}
	208
	209	llc_header = mtod(m, llc_header_t *);
	210	*llc_header =
	211	(type == AARP_AT_TYPE) ? snap_hdr_aarp : snap_hdr_at;
	212
	213	for (m->m_pkthdr.len = 0, m1 = m; m1; m1 = m1->m_next)
	214	m->m_pkthdr.len += m1->m_len;
	215	m->m_pkthdr.rcvif = 0;
	216
	217	/* *** Note: AT is sending out mbufs of type MSG_DATA,
	218	not MT_DATA. *** */
	219	#ifdef APPLETALK_DEBUG
	220	if (m->m_next &&
	221	!((m->m_next)->m_flags & M_EXT))
	222	kprintf("po: mlen= %d, m2len= %d\n", m->m_len,
	223	(m->m_next)->m_len);
	224	#endif
91447636 A	225	atalk_unlock();
	226	dlil_output(patp->aa_ifp, PF_APPLETALK, m, NULL, &dst, 0);
	227	atalk_lock();
1c79356b A	228
	229	pktsOut++;
	230	}
	231
	232	return 0;
	233	} /* pat_output */
	234
91447636 A	235	static void
	236	at_input_packet(
	237	__unused protocol_family_t protocol,
	238	mbuf_t m)
1c79356b	239	{
91447636	240	struct mbuf *m1;
1c79356b	241	struct ifnet *ifp;
1c79356b A	242	llc_header_t *llc_header;
	243	at_ifaddr_t *ifID;
	244	char src[6];
	245	enet_header_t *enet_header;
1c79356b	246
91447636	247	if (!appletalk_inited) {
1c79356b	248	m_freem(m);
91447636 A	249	return;
91447636 A	250	}
1c79356b	251
91447636	252	if ((m->m_flags & M_PKTHDR) == 0) {
1c79356b	253	#ifdef APPLETALK_DEBUG
91447636	254	kprintf("atalkintr: no HDR on packet received");
1c79356b A	255	#endif
1c79356b A	256	m_freem(m);
91447636 A	257	return;
91447636 A	258	}
1c79356b A	259
	260	/* make sure the interface this packet was received on is configured
	261	for AppleTalk */
	262	ifp = m->m_pkthdr.rcvif;
	263	TAILQ_FOREACH(ifID, &at_ifQueueHd, aa_link) {
	264	if (ifID->aa_ifp && (ifID->aa_ifp == ifp))
	265	break;
	266	}
	267	/* if we didn't find a matching interface */
	268	if (!ifID) {
	269	m_freem(m);
91447636	270	return; /* was EAFNOSUPPORT */
1c79356b A	271	}
	272
	273	/* make sure the entire packet header is in the current mbuf */
	274	if (m->m_len < ENET_LLC_SIZE &&
	275	(m = m_pullup(m, ENET_LLC_SIZE)) == 0) {
	276	#ifdef APPLETALK_DEBUG
	277	kprintf("atalkintr: packet too small\n");
	278	#endif
	279	m_freem(m);
91447636	280	return;
1c79356b A	281	}
	282	enet_header = mtod(m, enet_header_t *);
	283
	284	/* Ignore multicast packets from local station */
	285	/* * Note: code for IFTYPE_TOKENTALK may be needed here. * */
91447636 A	286	if (ifID->aa_ifp->if_type == IFT_ETHER \|\|
	287	ifID->aa_ifp->if_type == IFT_L2VLAN \|\|
	288	ifID->aa_ifp->if_type == IFT_IEEE8023ADLAG) {
1c79356b A	289	bcopy((char *)enet_header->src, src, sizeof(src));
	290
	291	#ifdef COMMENT /* In order to receive packets from the Blue Box, we cannot
	292	reject packets whose source address matches our local address.
	293	*/
	294	if ((enet_header->dst[0] & 1) &&
	295	(bcmp(src, ifID->xaddr, sizeof(src)) == 0)) {
	296	/* Packet rejected: think it's a local mcast. */
	297	m_freem(m);
91447636	298	return; /* was EAFNOSUPPORT */
1c79356b	299	}
55e303ae	300	#endif /* COMMENT */
1c79356b A	301
	302	llc_header = (llc_header_t *)(enet_header+1);
	303
	304	/* advance the mbuf pointers past the ethernet header */
	305	m->m_data += ENET_LLC_SIZE;
	306	m->m_len -= ENET_LLC_SIZE;
	307
	308	pktsIn++;
	309
	310	if (LLC_PROTO_EQUAL(llc_header->protocol,snap_proto_aarp)) {
	311	(void)aarp_rcv_pkt(mtod(m, aarp_pkt_t *), ifID);
	312	m_freem(m);
	313	}
	314	else if (LLC_PROTO_EQUAL(llc_header->protocol, snap_proto_ddp)) {
	315	/* if we're a router take all pkts */
	316	if (!ROUTING_MODE) {
	317	if (aarp_chk_addr(mtod(m, at_ddp_t *), ifID)
	318	== AARP_ERR_NOT_OURS) {
	319	#ifdef APPLETALK_DEBUG
	320	kprintf("pat_input: Packet Rejected: not for us? dest=%x.%x.%x.%x.%x.%x LLC_PROTO= %02x%02x\n",
	321	enet_header->dst[0], enet_header->dst[1],
	322	enet_header->dst[2], enet_header->dst[3],
	323	enet_header->dst[4], enet_header->dst[5],
	324	llc_header->protocol[3],
	325	llc_header->protocol[4]);
	326	#endif
	327	m_freem(m);
91447636	328	return; /* was EAFNOSUPPORT */
1c79356b A	329	}
	330	}
	331	MCHTYPE(m, MSG_DATA); /* set the mbuf type */
	332
	333	ifID->stats.rcv_packets++;
	334	for (m1 = m; m1; m1 = m1->m_next)
	335	ifID->stats.rcv_bytes += m1->m_len;
	336
	337	if (!MULTIPORT_MODE)
	338	ddp_glean(m, ifID, src);
	339
	340	ddp_input(m, ifID);
	341	} else {
	342	#ifdef APPLETALK_DEBUG
	343	kprintf("pat_input: Packet Rejected: wrong LLC_PROTO = %02x%02x\n",
	344	llc_header->protocol[3],
	345	llc_header->protocol[4]);
	346	#endif
	347	m_freem(m);
	348	}
1c79356b	349	}
91447636	350	}