[apple/xnu.git] / bsd / net / ether_at_pr_module.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) 1982, 1989, 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.
 *
 */


#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>

#include <net/if.h>
#include <net/netisr.h>
#include <net/route.h>
#include <net/if_llc.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/ndrv.h>
#include <netinet/if_ether.h>

#include <sys/socketvar.h>

#include <net/dlil.h>
#include <netat/at_pat.h>
#if NETAT
extern struct ifqueue atalkintrq;
#endif


#if BRIDGE
#include <net/bridge.h>
#endif

/* #include "vlan.h" */
#if NVLAN > 0
#include <net/if_vlan_var.h>
#endif /* NVLAN > 0 */

static
u_char	etherbroadcastaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };

#define IFP2AC(IFP) ((struct arpcom *)IFP)


struct dl_es_at_entry 
{
     struct ifnet *ifp;
     u_long	  dl_tag;
     int    ref_count;
};


/*
 * Temp static for protocol registration XXX
 */

#define MAX_EN_COUNT 30

static struct dl_es_at_entry en_at_array[MAX_EN_COUNT];

/*
 * Process a received Ethernet packet;
 * the packet is in the mbuf chain m without
 * the ether header, which is provided separately.
 */
int
at_ether_input(m, frame_header, ifp, dl_tag, sync_ok)
    struct mbuf  *m;
    char         *frame_header;
    struct ifnet *ifp;
    u_long	     dl_tag;
    int          sync_ok;

{
    register struct ether_header *eh = (struct ether_header *) frame_header;
    register struct ifqueue *inq=0;
    u_short ether_type;
    int s;
    u_int16_t ptype = -1;
    unsigned char buf[18];

#if NETAT
    register struct llc *l;
#endif

    if ((ifp->if_flags & IFF_UP) == 0) {
	m_freem(m);
	return EJUSTRETURN;
    }

    ifp->if_lastchange = time;

    if (eh->ether_dhost[0] & 1) {
	if (bcmp((caddr_t)etherbroadcastaddr, (caddr_t)eh->ether_dhost,
		 sizeof(etherbroadcastaddr)) == 0)
	    m->m_flags |= M_BCAST;
	else
	    m->m_flags |= M_MCAST;
    }
    if (m->m_flags & (M_BCAST|M_MCAST))
	ifp->if_imcasts++;

    ether_type = ntohs(eh->ether_type);

#if NVLAN > 0
	if (ether_type == vlan_proto) {
		if (vlan_input(eh, m) < 0)
			ifp->if_data.ifi_noproto++;
		return EJUSTRETURN;
	}
#endif /* NVLAN > 0 */

	if (ether_type > ETHERMTU)
	     return ENOENT;

#if NETAT
	l = mtod(m, struct llc *);

	switch (l->llc_dsap) {
	case LLC_SNAP_LSAP:

	     /* Temporary hack: check for AppleTalk and AARP packets */
	     /* WARNING we're checking only on the "ether_type" (the 2 bytes
	      * of the SNAP header. This shouldn't be a big deal, 
	      * AppleTalk pat_input is making sure we have the right packets
	      * because it needs to discrimante AARP from EtherTalk packets.
	      */

	     if (l->llc_ssap == LLC_SNAP_LSAP &&
		 l->llc_un.type_snap.control == 0x03) {

#ifdef APPLETALK_DEBUG
		  printf("new_ether_input: SNAP Cntrol type=0x%x Src=%s\n",
			 l->llc_un.type_snap.ether_type,
			 ether_sprintf(buf, &eh->ether_shost));
		  printf("                                     Dst=%s\n",
			 ether_sprintf(buf, &eh->ether_dhost));
#endif /* APPLETALK_DEBUG */

		  if ((l->llc_un.type_snap.ether_type == 0x809B) ||
		      (l->llc_un.type_snap.ether_type == 0x80F3)) {


		       /*
			* note: for AppleTalk we need to pass the enet header of the
			* packet up stack. To do so, we made sure in that the FULL packet
			* is copied in the mbuf by the mace driver, and only the m_data and
			* length have been shifted to make IP and the other guys happy.
			*/

		       m->m_data -= sizeof(*eh);
		       m->m_len += sizeof(*eh);
		       m->m_pkthdr.len += sizeof(*eh);	
#ifdef APPLETALK_DEBUG
		       l == (struct llc *)(eh+1);
		       if (l->llc_un.type_snap.ether_type == 0x80F3) {
			    kprintf("new_ether_input: RCV AppleTalk type=0x%x Src=%s\n",
				    l->llc_un.type_snap.ether_type,
				    ether_sprintf(buf, &eh->ether_shost));
			    kprintf("                                     Dst=%s\n",
				    ether_sprintf(buf, &eh->ether_dhost));
		       }
#endif /* APPLETALK_DEBUG */
		       schednetisr(NETISR_APPLETALK);
		       inq = &atalkintrq ;
		    
		       break;
		  }
	     }
	    
	     break;
	    
	    
	default:
	     return ENOENT;
	}


	if (inq == 0)
	     return ENOENT;

	s = splimp();
	if (IF_QFULL(inq)) {
		IF_DROP(inq);
		m_freem(m);
		splx(s);
		return EJUSTRETURN;
	} else
		IF_ENQUEUE(inq, m);
	splx(s);
	return 0;
#else
	return ENOENT;
#endif  /* NETAT */
}


int
ether_pre_output(ifp, m0, dst_netaddr, route, type, edst, dl_tag )
    struct ifnet    *ifp;
    struct mbuf     **m0;
    struct sockaddr *dst_netaddr;
    caddr_t	    route;
    char	    *type;
    char            *edst;
    u_long	    dl_tag;
{
    int s;
    register struct mbuf *m = *m0;
    register struct rtentry *rt;
    register struct ether_header *eh;
    int off, len = m->m_pkthdr.len;
    int hlen;	/* link layer header lenght */
    struct arpcom *ac = IFP2AC(ifp);


    if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 
	return ENETDOWN;

    hlen = ETHER_HDR_LEN;

    /*
     * Tell ether_frameout it's ok to loop packet unless negated below.
     */
    m->m_flags |= M_LOOP;

    switch (dst_netaddr->sa_family) {
    case AF_UNSPEC:
	m->m_flags &= ~M_LOOP;
	eh = (struct ether_header *)dst_netaddr->sa_data;
	(void)memcpy(edst, eh->ether_dhost, 6);
	*(u_short *)type = eh->ether_type;
	break;
	

    case AF_APPLETALK:
    {
	eh = (struct ether_header *)dst_netaddr->sa_data;
	bcopy((caddr_t)eh->ether_dhost, (caddr_t)edst, 6);
		
	*(u_short *)type = m->m_pkthdr.len;
    }
    break;


    default:
	kprintf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
	       dst_netaddr->sa_family);

        return EAFNOSUPPORT;
    }

    return (0);
}


int
ether_prmod_ioctl(dl_tag, ifp, command, data)
    u_long       dl_tag;
    struct ifnet *ifp;
    int          command;
    caddr_t      data;
{
    struct ifaddr *ifa = (struct ifaddr *) data;
    struct ifreq *ifr = (struct ifreq *) data;
    int error = 0;
    boolean_t funnel_state;
    struct arpcom *ac = (struct arpcom *) ifp;
    struct sockaddr_dl *sdl;
    struct sockaddr_in *sin;
    u_char *e_addr;


    funnel_state = thread_funnel_set(network_flock, TRUE);

    switch (command) {

    case SIOCSIFADDR:
	 if ((ifp->if_flags & IFF_RUNNING) == 0) {
	      ifp->if_flags |= IFF_UP;
	      dlil_ioctl(0, ifp, SIOCSIFFLAGS, (caddr_t) 0);
	 }

	break;

    case SIOCGIFADDR:
    {
	struct sockaddr *sa;

	sa = (struct sockaddr *) & ifr->ifr_data;
	bcopy(IFP2AC(ifp)->ac_enaddr,
	      (caddr_t) sa->sa_data, ETHER_ADDR_LEN);
    }
    break;

    case SIOCSIFMTU:
	/*
	 * Set the interface MTU.
	 */
	if (ifr->ifr_mtu > ETHERMTU) {
	    error = EINVAL;
	} else {
	    ifp->if_mtu = ifr->ifr_mtu;
	}
	break;

    default:
	 return EOPNOTSUPP;
    }

    (void) thread_funnel_set(network_flock, funnel_state);

    return (error);
}


void
ether_attach_at(struct ifnet *ifp, u_long *at_dl_tag, u_long *aarp_dl_tag)
{
    struct dlil_proto_reg_str   reg;
    struct dlil_demux_desc      desc;
    struct dlil_demux_desc      desc2;
    u_short native = 0;           /* 802.2 frames use a length here */
    int   stat;
    int   first_empty;
    int   i;


    first_empty = MAX_EN_COUNT;
    for (i=0; i < MAX_EN_COUNT; i++) {
	 if (en_at_array[i].ifp == 0)
	      first_empty = i;

	 if (en_at_array[i].ifp == ifp) {
	      en_at_array[i].ref_count++;
	      *at_dl_tag = *aarp_dl_tag = en_at_array[i].dl_tag;
	      return;
	}
    }
    
    if (first_empty == MAX_EN_COUNT)
	 return;

    TAILQ_INIT(&reg.demux_desc_head);
    desc.type = DLIL_DESC_802_2_SNAP;
    desc.variants.desc_802_2_SNAP.dsap = LLC_SNAP_LSAP;
    desc.variants.desc_802_2_SNAP.ssap = LLC_SNAP_LSAP;
    desc.variants.desc_802_2_SNAP.control_code = 0x03;
    desc.variants.desc_802_2_SNAP.org[0] = 0x08;
    desc.variants.desc_802_2_SNAP.org[1] = 0x00;
    desc.variants.desc_802_2_SNAP.org[2] = 0x07;
    desc.variants.desc_802_2_SNAP.protocol_type = 0x809B;
    desc.native_type = (char *) &native;
    TAILQ_INSERT_TAIL(&reg.demux_desc_head, &desc, next);
    reg.interface_family = ifp->if_family;
    reg.unit_number      = ifp->if_unit;
    reg.input            = at_ether_input;
    reg.pre_output       = ether_pre_output;
    reg.event            = 0;
    reg.offer            = 0;
    reg.ioctl            = ether_prmod_ioctl;
    reg.default_proto    = 0;
    reg.protocol_family  = PF_APPLETALK;

    desc2 = desc;
    desc2.variants.desc_802_2_SNAP.protocol_type = 0x80F3;
    desc2.variants.desc_802_2_SNAP.org[0] = 0;
    desc2.variants.desc_802_2_SNAP.org[1] = 0;
    desc2.variants.desc_802_2_SNAP.org[2] = 0;

    TAILQ_INSERT_TAIL(&reg.demux_desc_head, &desc2, next); 

    stat = dlil_attach_protocol(&reg, at_dl_tag);
    if (stat) {
	printf("WARNING: ether_attach_at can't attach at to interface\n");
	return;
    }

    *aarp_dl_tag = *at_dl_tag;

    en_at_array[first_empty].ifp = ifp;
    en_at_array[first_empty].dl_tag = *at_dl_tag;
    en_at_array[first_empty].ref_count = 1;

} /* ether_attach_at */


void
ether_detach_at(struct ifnet *ifp)
{
     int i;
     
     for (i=0; i < MAX_EN_COUNT; i++) {
	  if (en_at_array[i].ifp == ifp)
	       break;
     }

     if (i < MAX_EN_COUNT) {
	  if (en_at_array[i].ref_count > 1) 
	       en_at_array[i].ref_count--;
	  else {
	       if (en_at_array[i].ref_count == 1) {
		    dlil_detach_protocol(en_at_array[i].dl_tag);
		    en_at_array[i].ifp = 0;
	       }
	  }
     }
}
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	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.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	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.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* Copyright (c) 1982, 1989, 1993
	24	* The Regents of the University of California. All rights reserved.
	25	*
	26	* Redistribution and use in source and binary forms, with or without
	27	* modification, are permitted provided that the following conditions
	28	* are met:
	29	* 1. Redistributions of source code must retain the above copyright
	30	* notice, this list of conditions and the following disclaimer.
	31	* 2. Redistributions in binary form must reproduce the above copyright
	32	* notice, this list of conditions and the following disclaimer in the
	33	* documentation and/or other materials provided with the distribution.
	34	* 3. All advertising materials mentioning features or use of this software
	35	* must display the following acknowledgement:
	36	* This product includes software developed by the University of
	37	* California, Berkeley and its contributors.
	38	* 4. Neither the name of the University nor the names of its contributors
	39	* may be used to endorse or promote products derived from this software
	40	* without specific prior written permission.
	41	*
	42	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	43	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	44	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	45	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	46	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	47	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	48	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	49	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	50	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	51	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	52	* SUCH DAMAGE.
	53	*
	54	*/
	55
	56
	57
	58	#include <sys/param.h>
	59	#include <sys/systm.h>
	60	#include <sys/kernel.h>
	61	#include <sys/malloc.h>
	62	#include <sys/mbuf.h>
	63	#include <sys/socket.h>
	64	#include <sys/sockio.h>
65	#include <sys/sysctl.h>
66
67	#include <net/if.h>
68	#include <net/netisr.h>
69	#include <net/route.h>
70	#include <net/if_llc.h>
71	#include <net/if_dl.h>
72	#include <net/if_types.h>
73	#include <net/ndrv.h>
74	#include <netinet/if_ether.h>
75
76	#include <sys/socketvar.h>
77
78	#include <net/dlil.h>
79	#include <netat/at_pat.h>
80	#if NETAT
81	extern struct ifqueue atalkintrq;
82	#endif
83
84
85	#if BRIDGE
86	#include <net/bridge.h>
87	#endif
88
89	/* #include "vlan.h" */
90	#if NVLAN > 0
91	#include <net/if_vlan_var.h>
92	#endif /* NVLAN > 0 */
93
94	static
95	u_char etherbroadcastaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
96
97	#define IFP2AC(IFP) ((struct arpcom *)IFP)
98
99
100	struct dl_es_at_entry
101	{
102	struct ifnet *ifp;
103	u_long dl_tag;
104	int ref_count;
105	};
106
107
108	/*
109	* Temp static for protocol registration XXX
110	*/
111
112	#define MAX_EN_COUNT 30
113
114	static struct dl_es_at_entry en_at_array[MAX_EN_COUNT];
115
116	/*
117	* Process a received Ethernet packet;
118	* the packet is in the mbuf chain m without
119	* the ether header, which is provided separately.
120	*/
121	int
122	at_ether_input(m, frame_header, ifp, dl_tag, sync_ok)
123	struct mbuf *m;
124	char *frame_header;
125	struct ifnet *ifp;
126	u_long dl_tag;
127	int sync_ok;
128
129	{
130	register struct ether_header eh = (struct ether_header ) frame_header;
131	register struct ifqueue *inq=0;
132	u_short ether_type;
133	int s;
134	u_int16_t ptype = -1;
135	unsigned char buf[18];
136
137	#if NETAT
138	register struct llc *l;
139	#endif
140
141	if ((ifp->if_flags & IFF_UP) == 0) {
142	m_freem(m);
143	return EJUSTRETURN;
144	}
145
146	ifp->if_lastchange = time;
147
148	if (eh->ether_dhost[0] & 1) {
149	if (bcmp((caddr_t)etherbroadcastaddr, (caddr_t)eh->ether_dhost,
150	sizeof(etherbroadcastaddr)) == 0)
151	m->m_flags \|= M_BCAST;
152	else
153	m->m_flags \|= M_MCAST;
154	}
155	if (m->m_flags & (M_BCAST\|M_MCAST))
156	ifp->if_imcasts++;
157
158	ether_type = ntohs(eh->ether_type);
159
160	#if NVLAN > 0
161	if (ether_type == vlan_proto) {
162	if (vlan_input(eh, m) < 0)
163	ifp->if_data.ifi_noproto++;
164	return EJUSTRETURN;
165	}
166	#endif /* NVLAN > 0 */
167
168	if (ether_type > ETHERMTU)
169	return ENOENT;
170
171	#if NETAT
172	l = mtod(m, struct llc *);
173
174	switch (l->llc_dsap) {
175	case LLC_SNAP_LSAP:
176
177	/* Temporary hack: check for AppleTalk and AARP packets */
178	/* WARNING we're checking only on the "ether_type" (the 2 bytes
179	* of the SNAP header. This shouldn't be a big deal,
180	* AppleTalk pat_input is making sure we have the right packets
181	* because it needs to discrimante AARP from EtherTalk packets.
182	*/
183
184	if (l->llc_ssap == LLC_SNAP_LSAP &&
185	l->llc_un.type_snap.control == 0x03) {
186
187	#ifdef APPLETALK_DEBUG
188	printf("new_ether_input: SNAP Cntrol type=0x%x Src=%s\n",
189	l->llc_un.type_snap.ether_type,
190	ether_sprintf(buf, &eh->ether_shost));
191	printf(" Dst=%s\n",
192	ether_sprintf(buf, &eh->ether_dhost));
193	#endif /* APPLETALK_DEBUG */
194
195	if ((l->llc_un.type_snap.ether_type == 0x809B) \|\|
196	(l->llc_un.type_snap.ether_type == 0x80F3)) {
197
198
199	/*
200	* note: for AppleTalk we need to pass the enet header of the
201	* packet up stack. To do so, we made sure in that the FULL packet
202	* is copied in the mbuf by the mace driver, and only the m_data and
203	* length have been shifted to make IP and the other guys happy.
204	*/
205
206	m->m_data -= sizeof(*eh);
207	m->m_len += sizeof(*eh);
208	m->m_pkthdr.len += sizeof(*eh);
209	#ifdef APPLETALK_DEBUG
210	l == (struct llc *)(eh+1);
211	if (l->llc_un.type_snap.ether_type == 0x80F3) {
212	kprintf("new_ether_input: RCV AppleTalk type=0x%x Src=%s\n",
213	l->llc_un.type_snap.ether_type,
214	ether_sprintf(buf, &eh->ether_shost));
215	kprintf(" Dst=%s\n",
216	ether_sprintf(buf, &eh->ether_dhost));
217	}
218	#endif /* APPLETALK_DEBUG */
219	schednetisr(NETISR_APPLETALK);
220	inq = &atalkintrq ;
221
222	break;
223	}
224	}
225
226	break;
227
228
229	default:
230	return ENOENT;
231	}
232
233
234	if (inq == 0)
235	return ENOENT;
236
237	s = splimp();
238	if (IF_QFULL(inq)) {
239	IF_DROP(inq);
240	m_freem(m);
241	splx(s);
242	return EJUSTRETURN;
243	} else
244	IF_ENQUEUE(inq, m);
245	splx(s);
246	return 0;
247	#else
248	return ENOENT;
249	#endif /* NETAT */
250	}
251
252
253
254	int
255	ether_pre_output(ifp, m0, dst_netaddr, route, type, edst, dl_tag )
256	struct ifnet *ifp;
257	struct mbuf **m0;
258	struct sockaddr *dst_netaddr;
259	caddr_t route;
260	char *type;
261	char *edst;
262	u_long dl_tag;
263	{
264	int s;
265	register struct mbuf m = m0;
266	register struct rtentry *rt;
267	register struct ether_header *eh;
268	int off, len = m->m_pkthdr.len;
269	int hlen; /* link layer header lenght */
270	struct arpcom *ac = IFP2AC(ifp);
271
272
273
274	if ((ifp->if_flags & (IFF_UP\|IFF_RUNNING)) != (IFF_UP\|IFF_RUNNING))
275	return ENETDOWN;
276
277	hlen = ETHER_HDR_LEN;
278
279	/*
280	* Tell ether_frameout it's ok to loop packet unless negated below.
281	*/
282	m->m_flags \|= M_LOOP;
283
284	switch (dst_netaddr->sa_family) {
285	case AF_UNSPEC:
286	m->m_flags &= ~M_LOOP;
287	eh = (struct ether_header *)dst_netaddr->sa_data;
288	(void)memcpy(edst, eh->ether_dhost, 6);
289	(u_short )type = eh->ether_type;
290	break;
291
292
293	case AF_APPLETALK:
294	{
295	eh = (struct ether_header *)dst_netaddr->sa_data;
296	bcopy((caddr_t)eh->ether_dhost, (caddr_t)edst, 6);
297
298	(u_short )type = m->m_pkthdr.len;
299	}
300	break;
301
302
303	default:
304	kprintf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
305	dst_netaddr->sa_family);
306
307	return EAFNOSUPPORT;
308	}
309
310	return (0);
311	}
312
313
314
315
316
317	int
318	ether_prmod_ioctl(dl_tag, ifp, command, data)
319	u_long dl_tag;
320	struct ifnet *ifp;
321	int command;
322	caddr_t data;
323	{
324	struct ifaddr ifa = (struct ifaddr ) data;
325	struct ifreq ifr = (struct ifreq ) data;
326	int error = 0;
327	boolean_t funnel_state;
328	struct arpcom ac = (struct arpcom ) ifp;
329	struct sockaddr_dl *sdl;
330	struct sockaddr_in *sin;
331	u_char *e_addr;
332
333
334	funnel_state = thread_funnel_set(network_flock, TRUE);
335
336	switch (command) {
337
338	case SIOCSIFADDR:
339	if ((ifp->if_flags & IFF_RUNNING) == 0) {
340	ifp->if_flags \|= IFF_UP;
341	dlil_ioctl(0, ifp, SIOCSIFFLAGS, (caddr_t) 0);
342	}
343
344	break;
345
346	case SIOCGIFADDR:
347	{
348	struct sockaddr *sa;
349
350	sa = (struct sockaddr *) & ifr->ifr_data;
351	bcopy(IFP2AC(ifp)->ac_enaddr,
352	(caddr_t) sa->sa_data, ETHER_ADDR_LEN);
353	}
354	break;
355
356	case SIOCSIFMTU:
357	/*
358	* Set the interface MTU.
359	*/
360	if (ifr->ifr_mtu > ETHERMTU) {
361	error = EINVAL;
362	} else {
363	ifp->if_mtu = ifr->ifr_mtu;
364	}
365	break;
366
367	default:
368	return EOPNOTSUPP;
369	}
370
371	(void) thread_funnel_set(network_flock, funnel_state);
372
373	return (error);
374	}
375
376
377
378	void
379	ether_attach_at(struct ifnet ifp, u_long at_dl_tag, u_long *aarp_dl_tag)
380	{
381	struct dlil_proto_reg_str reg;
382	struct dlil_demux_desc desc;
383	struct dlil_demux_desc desc2;
384	u_short native = 0; /* 802.2 frames use a length here */
385	int stat;
386	int first_empty;
387	int i;
388
389
390	first_empty = MAX_EN_COUNT;
391	for (i=0; i < MAX_EN_COUNT; i++) {
392	if (en_at_array[i].ifp == 0)
393	first_empty = i;
394
395	if (en_at_array[i].ifp == ifp) {
396	en_at_array[i].ref_count++;
397	at_dl_tag = aarp_dl_tag = en_at_array[i].dl_tag;
398	return;
399	}
400	}
401
402	if (first_empty == MAX_EN_COUNT)
403	return;
404
405	TAILQ_INIT(&reg.demux_desc_head);
406	desc.type = DLIL_DESC_802_2_SNAP;
407	desc.variants.desc_802_2_SNAP.dsap = LLC_SNAP_LSAP;
408	desc.variants.desc_802_2_SNAP.ssap = LLC_SNAP_LSAP;
409	desc.variants.desc_802_2_SNAP.control_code = 0x03;
410	desc.variants.desc_802_2_SNAP.org[0] = 0x08;
411	desc.variants.desc_802_2_SNAP.org[1] = 0x00;
412	desc.variants.desc_802_2_SNAP.org[2] = 0x07;
413	desc.variants.desc_802_2_SNAP.protocol_type = 0x809B;
414	desc.native_type = (char *) &native;
415	TAILQ_INSERT_TAIL(&reg.demux_desc_head, &desc, next);
416	reg.interface_family = ifp->if_family;
417	reg.unit_number = ifp->if_unit;
418	reg.input = at_ether_input;
419	reg.pre_output = ether_pre_output;
420	reg.event = 0;
421	reg.offer = 0;
422	reg.ioctl = ether_prmod_ioctl;
423	reg.default_proto = 0;
424	reg.protocol_family = PF_APPLETALK;
425
426	desc2 = desc;
427	desc2.variants.desc_802_2_SNAP.protocol_type = 0x80F3;
428	desc2.variants.desc_802_2_SNAP.org[0] = 0;
429	desc2.variants.desc_802_2_SNAP.org[1] = 0;
430	desc2.variants.desc_802_2_SNAP.org[2] = 0;
431
432	TAILQ_INSERT_TAIL(&reg.demux_desc_head, &desc2, next);
433
434	stat = dlil_attach_protocol(&reg, at_dl_tag);
435	if (stat) {
436	printf("WARNING: ether_attach_at can't attach at to interface\n");
437	return;
438	}
439
440	aarp_dl_tag = at_dl_tag;
441
442	en_at_array[first_empty].ifp = ifp;
443	en_at_array[first_empty].dl_tag = *at_dl_tag;
444	en_at_array[first_empty].ref_count = 1;
445
446	} /* ether_attach_at */
447
448
449	void
450	ether_detach_at(struct ifnet *ifp)
451	{
452	int i;
453
454	for (i=0; i < MAX_EN_COUNT; i++) {
455	if (en_at_array[i].ifp == ifp)
456	break;
457	}
458
459	if (i < MAX_EN_COUNT) {
460	if (en_at_array[i].ref_count > 1)
461	en_at_array[i].ref_count--;
462	else {
463	if (en_at_array[i].ref_count == 1) {
464	dlil_detach_protocol(en_at_array[i].dl_tag);
465	en_at_array[i].ifp = 0;
466	}
467	}
468	}
469	}