[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;

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	/*
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 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
6601e61a A	79	extern atlock_t
	80	ddpall_lock, ddpinp_lock, arpinp_lock, refall_lock, nve_lock,
	81	aspall_lock, asptmo_lock, atpall_lock, atptmo_lock, atpgen_lock;
1c79356b	82
6601e61a A	83	extern int (sys_ATsocket )(), (sys_ATgetmsg)(), (*sys_ATputmsg)();
	84	extern int (sys_ATPsndreq)(), (sys_ATPsndrsp)();
	85	extern int (sys_ATPgetreq)(), (sys_ATPgetrsp)();
1c79356b A	86
	87	void atalk_load()
	88	{
6601e61a A	89	extern int _ATsocket(), _ATgetmsg(), _ATputmsg();
6601e61a A	90	extern int _ATPsndreq(), _ATPsndrsp(), _ATPgetreq(), _ATPgetrsp();
91447636	91	extern lck_mtx_t *domain_proto_mtx;
1c79356b	92
6601e61a A	93	sys_ATsocket = _ATsocket;
	94	sys_ATgetmsg = _ATgetmsg;
	95	sys_ATputmsg = _ATputmsg;
	96	sys_ATPsndreq = _ATPsndreq;
	97	sys_ATPsndrsp = _ATPsndrsp;
	98	sys_ATPgetreq = _ATPgetreq;
	99	sys_ATPgetrsp = _ATPgetrsp;
	100
	101	ATLOCKINIT(ddpall_lock);
	102	ATLOCKINIT(ddpinp_lock);
	103	ATLOCKINIT(arpinp_lock);
	104	ATLOCKINIT(refall_lock);
	105	ATLOCKINIT(aspall_lock);
	106	ATLOCKINIT(asptmo_lock);
	107	ATLOCKINIT(atpall_lock);
	108	ATLOCKINIT(atptmo_lock);
	109	ATLOCKINIT(atpgen_lock);
	110	ATLOCKINIT(nve_lock);
1c79356b A	111
	112	atp_init();
	113	atp_link();
	114	adspInited = 0;
	115
	116	/* adsp_init();
	117	for 2225395
	118	this happens in adsp_open and is undone on ADSP_UNLINK
	119	*/
91447636 A	120	lck_mtx_unlock(domain_proto_mtx);
	121	proto_register_input(PF_APPLETALK, at_input_packet, NULL);
	122	lck_mtx_lock(domain_proto_mtx);
1c79356b A	123	} /* atalk_load */
	124
	125	/* Undo everything atalk_load() did. */
	126	void atalk_unload() /* not currently used */
	127	{
	128	extern gbuf_t *scb_resource_m;
	129	extern gbuf_t *atp_resource_m;
	130
6601e61a A	131	sys_ATsocket = 0;
	132	sys_ATgetmsg = 0;
	133	sys_ATputmsg = 0;
	134	sys_ATPsndreq = 0;
	135	sys_ATPsndrsp = 0;
	136	sys_ATPgetreq = 0;
	137	sys_ATPgetrsp = 0;
	138
1c79356b A	139	atp_unlink();
	140
	141	#ifdef NOT_YET
	142	if (scb_resource_m) {
	143	gbuf_freem(scb_resource_m);
	144	scb_resource_m = 0;
	145	scb_free_list = 0;
	146	}
	147	/* allocated in atp_trans_alloc() */
	148	if (atp_resource_m) {
	149	gbuf_freem(atp_resource_m);
	150	atp_resource_m = 0;
	151	atp_trans_free_list = 0;
	152	}
	153	#endif
	154
	155	appletalk_inited = 0;
	156	} /* atalk_unload */
	157
	158	void appletalk_hack_start()
	159	{
	160	if (!appletalk_inited) {
	161	atalk_load();
	162	atalkintrq.ifq_maxlen = IFQ_MAXLEN;
	163	appletalk_inited = 1;
	164	}
	165	} /* appletalk_hack_start */
	166
	167	int pat_output(patp, mlist, dst_addr, type)
	168	at_ifaddr_t *patp;
	169	struct mbuf mlist; / packet chain */
6601e61a	170	unsigned char *dst_addr;
1c79356b A	171	int type;
	172	{
	173	struct mbuf m, m1;
	174	llc_header_t *llc_header;
	175	struct sockaddr dst;
	176
	177	if (! patp->aa_ifp) {
	178	for (m = mlist; m; m = mlist) {
	179	mlist = m->m_nextpkt;
	180	m->m_nextpkt = 0;
	181	m_freem(m);
	182	}
	183	return ENOTREADY;
	184	}
	185
	186	/* this is for ether_output */
	187	dst.sa_family = AF_APPLETALK;
	188	dst.sa_len = 2 + sizeof(struct etalk_addr);
	189	bcopy (dst_addr, &dst.sa_data[0], sizeof(struct etalk_addr));
	190
	191	/* packet chains are used on output and can be tested using aufs */
	192	for (m = mlist; m; m = mlist) {
	193	mlist = m->m_nextpkt;
	194	m->m_nextpkt = 0;
	195
9bccf70c	196	M_PREPEND(m, sizeof(llc_header_t), M_DONTWAIT);
1c79356b A	197	if (m == 0) {
	198	continue;
	199	}
	200
	201	llc_header = mtod(m, llc_header_t *);
	202	*llc_header =
	203	(type == AARP_AT_TYPE) ? snap_hdr_aarp : snap_hdr_at;
	204
	205	for (m->m_pkthdr.len = 0, m1 = m; m1; m1 = m1->m_next)
	206	m->m_pkthdr.len += m1->m_len;
	207	m->m_pkthdr.rcvif = 0;
	208
	209	/* *** Note: AT is sending out mbufs of type MSG_DATA,
	210	not MT_DATA. *** */
	211	#ifdef APPLETALK_DEBUG
	212	if (m->m_next &&
	213	!((m->m_next)->m_flags & M_EXT))
	214	kprintf("po: mlen= %d, m2len= %d\n", m->m_len,
	215	(m->m_next)->m_len);
	216	#endif
91447636 A	217	atalk_unlock();
	218	dlil_output(patp->aa_ifp, PF_APPLETALK, m, NULL, &dst, 0);
	219	atalk_lock();
1c79356b A	220
	221	pktsOut++;
	222	}
	223
	224	return 0;
	225	} /* pat_output */
	226
91447636 A	227	static void
	228	at_input_packet(
	229	__unused protocol_family_t protocol,
	230	mbuf_t m)
1c79356b	231	{
91447636	232	struct mbuf *m1;
1c79356b	233	struct ifnet *ifp;
1c79356b A	234	llc_header_t *llc_header;
	235	at_ifaddr_t *ifID;
	236	char src[6];
	237	enet_header_t *enet_header;
1c79356b	238
91447636	239	if (!appletalk_inited) {
1c79356b	240	m_freem(m);
91447636 A	241	return;
91447636 A	242	}
1c79356b	243
91447636	244	if ((m->m_flags & M_PKTHDR) == 0) {
1c79356b	245	#ifdef APPLETALK_DEBUG
91447636	246	kprintf("atalkintr: no HDR on packet received");
1c79356b A	247	#endif
1c79356b A	248	m_freem(m);
91447636 A	249	return;
91447636 A	250	}
1c79356b A	251
	252	/* make sure the interface this packet was received on is configured
	253	for AppleTalk */
	254	ifp = m->m_pkthdr.rcvif;
	255	TAILQ_FOREACH(ifID, &at_ifQueueHd, aa_link) {
	256	if (ifID->aa_ifp && (ifID->aa_ifp == ifp))
	257	break;
	258	}
	259	/* if we didn't find a matching interface */
	260	if (!ifID) {
	261	m_freem(m);
91447636	262	return; /* was EAFNOSUPPORT */
1c79356b A	263	}
	264
	265	/* make sure the entire packet header is in the current mbuf */
	266	if (m->m_len < ENET_LLC_SIZE &&
	267	(m = m_pullup(m, ENET_LLC_SIZE)) == 0) {
	268	#ifdef APPLETALK_DEBUG
	269	kprintf("atalkintr: packet too small\n");
	270	#endif
	271	m_freem(m);
91447636	272	return;
1c79356b A	273	}
	274	enet_header = mtod(m, enet_header_t *);
	275
	276	/* Ignore multicast packets from local station */
	277	/* * Note: code for IFTYPE_TOKENTALK may be needed here. * */
91447636 A	278	if (ifID->aa_ifp->if_type == IFT_ETHER \|\|
	279	ifID->aa_ifp->if_type == IFT_L2VLAN \|\|
	280	ifID->aa_ifp->if_type == IFT_IEEE8023ADLAG) {
1c79356b A	281	bcopy((char *)enet_header->src, src, sizeof(src));
	282
	283	#ifdef COMMENT /* In order to receive packets from the Blue Box, we cannot
	284	reject packets whose source address matches our local address.
	285	*/
	286	if ((enet_header->dst[0] & 1) &&
	287	(bcmp(src, ifID->xaddr, sizeof(src)) == 0)) {
	288	/* Packet rejected: think it's a local mcast. */
	289	m_freem(m);
91447636	290	return; /* was EAFNOSUPPORT */
1c79356b	291	}
55e303ae	292	#endif /* COMMENT */
1c79356b A	293
	294	llc_header = (llc_header_t *)(enet_header+1);
	295
	296	/* advance the mbuf pointers past the ethernet header */
	297	m->m_data += ENET_LLC_SIZE;
	298	m->m_len -= ENET_LLC_SIZE;
	299
	300	pktsIn++;
	301
	302	if (LLC_PROTO_EQUAL(llc_header->protocol,snap_proto_aarp)) {
	303	(void)aarp_rcv_pkt(mtod(m, aarp_pkt_t *), ifID);
	304	m_freem(m);
	305	}
	306	else if (LLC_PROTO_EQUAL(llc_header->protocol, snap_proto_ddp)) {
	307	/* if we're a router take all pkts */
	308	if (!ROUTING_MODE) {
	309	if (aarp_chk_addr(mtod(m, at_ddp_t *), ifID)
	310	== AARP_ERR_NOT_OURS) {
	311	#ifdef APPLETALK_DEBUG
	312	kprintf("pat_input: Packet Rejected: not for us? dest=%x.%x.%x.%x.%x.%x LLC_PROTO= %02x%02x\n",
	313	enet_header->dst[0], enet_header->dst[1],
	314	enet_header->dst[2], enet_header->dst[3],
	315	enet_header->dst[4], enet_header->dst[5],
	316	llc_header->protocol[3],
	317	llc_header->protocol[4]);
	318	#endif
	319	m_freem(m);
91447636	320	return; /* was EAFNOSUPPORT */
1c79356b A	321	}
	322	}
	323	MCHTYPE(m, MSG_DATA); /* set the mbuf type */
	324
	325	ifID->stats.rcv_packets++;
	326	for (m1 = m; m1; m1 = m1->m_next)
	327	ifID->stats.rcv_bytes += m1->m_len;
	328
	329	if (!MULTIPORT_MODE)
	330	ddp_glean(m, ifID, src);
	331
	332	ddp_input(m, ifID);
	333	} else {
	334	#ifdef APPLETALK_DEBUG
	335	kprintf("pat_input: Packet Rejected: wrong LLC_PROTO = %02x%02x\n",
	336	llc_header->protocol[3],
	337	llc_header->protocol[4]);
	338	#endif
	339	m_freem(m);
	340	}
1c79356b	341	}
91447636	342	}