[apple/xnu.git] / bsd / net / ether_inet_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 <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/if_ether.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>

#include <sys/socketvar.h>

#include <net/dlil.h>

#if LLC && CCITT
extern struct ifqueue pkintrq;
#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_long lo_dlt = 0;
static ivedonethis = 0;
static u_char	etherbroadcastaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };

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


/*
 * Process a received Ethernet packet;
 * the packet is in the mbuf chain m without
 * the ether header, which is provided separately.
 */
int
inet_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 ISO || LLC || 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 */

    switch (ether_type) {

    case ETHERTYPE_IP:
	if (ipflow_fastforward(m))
	    return EJUSTRETURN;
	ptype = mtod(m, struct ip *)->ip_p;
	if ((sync_ok == 0) || 
	    (ptype != IPPROTO_TCP && ptype != IPPROTO_UDP)) {
	    schednetisr(NETISR_IP); 
	}

	inq = &ipintrq;
	break;

    case ETHERTYPE_ARP:
	schednetisr(NETISR_ARP);
	inq = &arpintrq;
	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);

    if ((sync_ok) && 
	(ptype == IPPROTO_TCP || ptype == IPPROTO_UDP)) {
	extern void ipintr(void);

	s = splnet();
	ipintr();
	splx(s);
    }

    return 0;
}


int
inet_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;
{
    struct rtentry  *rt0 = (struct rtentry *) route;
    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;

    rt = rt0;
    if (rt) {
	if ((rt->rt_flags & RTF_UP) == 0) {
	    rt0 = rt = rtalloc1(dst_netaddr, 1, 0UL);
	    if (rt0)
		rtunref(rt);
	    else
		return EHOSTUNREACH;
	}

	if (rt->rt_flags & RTF_GATEWAY) {
	    if (rt->rt_gwroute == 0)
		goto lookup;
	    if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
		rtfree(rt); rt = rt0;
	    lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1,
					      0UL);
		if ((rt = rt->rt_gwroute) == 0)
		    return (EHOSTUNREACH);
	    }
	}

	
	if (rt->rt_flags & RTF_REJECT)
	    if (rt->rt_rmx.rmx_expire == 0 ||
		time_second < rt->rt_rmx.rmx_expire)
		return (rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
    }

    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_INET:
	if (!arpresolve(ac, rt, m, dst_netaddr, edst, rt0))
	    return (EJUSTRETURN);	/* if not yet resolved */
	off = m->m_pkthdr.len - m->m_len;
	*(u_short *)type = htons(ETHERTYPE_IP);
	break;

    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;

    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_inet_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;
    struct rslvmulti_req *rsreq = (struct rslvmulti_req *) 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;


#if 0
	/* No tneeded at soo_ioctlis already funnelled */
    funnel_state = thread_funnel_set(network_flock,TRUE);
#endif

    switch (command) {
    case SIOCRSLVMULTI: {
	switch(rsreq->sa->sa_family) {

	case AF_INET:
		sin = (struct sockaddr_in *)rsreq->sa;
		if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr)))
			return EADDRNOTAVAIL;
		MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR,
		       M_WAITOK);
		sdl->sdl_len = sizeof *sdl;
		sdl->sdl_family = AF_LINK;
		sdl->sdl_index = ifp->if_index;
		sdl->sdl_type = IFT_ETHER;
		sdl->sdl_nlen = 0;
		sdl->sdl_alen = ETHER_ADDR_LEN;
		sdl->sdl_slen = 0;
		e_addr = LLADDR(sdl);
		ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr);
		*rsreq->llsa = (struct sockaddr *)sdl;
		return EJUSTRETURN;

	default:
		/* 
		 * Well, the text isn't quite right, but it's the name
		 * that counts...
		 */
		return EAFNOSUPPORT;
	}

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

	 switch (ifa->ifa_addr->sa_family) {

	 case AF_INET:

	    if (ifp->if_init)
		ifp->if_init(ifp->if_softc);	/* before arpwhohas */

	    //
	    // See if another station has *our* IP address.
	    // i.e.: There is an address conflict! If a
	    // conflict exists, a message is sent to the
	    // console.
	    //
	    if (IA_SIN(ifa)->sin_addr.s_addr != 0)
	    {
		 /* don't bother for 0.0.0.0 */
		 ac->ac_ipaddr = IA_SIN(ifa)->sin_addr;
		 arpwhohas(ac, &IA_SIN(ifa)->sin_addr);
	    }

	    arp_ifinit(IFP2AC(ifp), ifa);

	    /*
	     * Register new IP and MAC addresses with the kernel debugger
	     * for the en0 interface.
	     */
	    if (ifp->if_unit == 0)
		kdp_set_ip_and_mac_addresses(&(IA_SIN(ifa)->sin_addr), &(IFP2AC(ifp)->ac_enaddr));

	    break;

	default:
	    break;
	}

	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:
	/*
	 * IOKit IONetworkFamily will set the right MTU according to the driver
	 */

	 return (0);

    default:
	 return EOPNOTSUPP;
    }

    //(void) thread_funnel_set(network_flock, FALSE);

    return (error);
}


u_long
ether_attach_inet(struct ifnet *ifp)
{
    struct dlil_proto_reg_str   reg;
    struct dlil_demux_desc      desc;
    struct dlil_demux_desc      desc2;
    u_long			ip_dl_tag=0;
    u_short en_native=ETHERTYPE_IP;
    u_short arp_native=ETHERTYPE_ARP;
    int   stat;
    int i;


    stat = dlil_find_dltag(ifp->if_family, ifp->if_unit, PF_INET, &ip_dl_tag);
    if (stat == 0)
	 return ip_dl_tag;

    TAILQ_INIT(&reg.demux_desc_head);
    desc.type = DLIL_DESC_RAW;
    desc.variants.bitmask.proto_id_length = 0;
    desc.variants.bitmask.proto_id = 0;
    desc.variants.bitmask.proto_id_mask = 0;
    desc.native_type = (char *) &en_native;
    TAILQ_INSERT_TAIL(&reg.demux_desc_head, &desc, next);
    reg.interface_family = ifp->if_family;
    reg.unit_number      = ifp->if_unit;
    reg.input            = inet_ether_input;
    reg.pre_output       = inet_ether_pre_output;
    reg.event            = 0;
    reg.offer            = 0;
    reg.ioctl            = ether_inet_prmod_ioctl;
    reg.default_proto    = 1;
    reg.protocol_family  = PF_INET;

    desc2 = desc;
    desc2.native_type = (char *) &arp_native;
    TAILQ_INSERT_TAIL(&reg.demux_desc_head, &desc2, next);

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

int  ether_detach_inet(struct ifnet *ifp)
{
    u_long      ip_dl_tag = 0;
    int         stat;

    stat = dlil_find_dltag(ifp->if_family, ifp->if_unit, PF_INET, &ip_dl_tag);
    if (stat == 0) {
        stat = dlil_detach_protocol(ip_dl_tag);
        if (stat) {
            printf("WARNING: ether_detach_inet can't detach ip from interface\n");
        }
    }
    return stat;
}
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
de355530 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	*
de355530 A	12	* This Original Code and all software distributed under the License are
de355530 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,
de355530 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 (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>
1c79356b A	73
	74	#include <netinet/in.h>
	75	#include <netinet/in_var.h>
	76	#include <netinet/if_ether.h>
	77	#include <netinet/in_systm.h>
	78	#include <netinet/ip.h>
	79
	80	#include <sys/socketvar.h>
	81
	82	#include <net/dlil.h>
	83
	84	#if LLC && CCITT
	85	extern struct ifqueue pkintrq;
	86	#endif
	87
	88
	89	#if BRIDGE
	90	#include <net/bridge.h>
	91	#endif
	92
	93	/* #include "vlan.h" */
	94	#if NVLAN > 0
	95	#include <net/if_vlan_var.h>
	96	#endif /* NVLAN > 0 */
	97
	98	static u_long lo_dlt = 0;
	99	static ivedonethis = 0;
	100	static u_char etherbroadcastaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
	101
	102	#define IFP2AC(IFP) ((struct arpcom *)IFP)
	103
	104
	105
	106
	107	/*
	108	* Process a received Ethernet packet;
	109	* the packet is in the mbuf chain m without
	110	* the ether header, which is provided separately.
	111	*/
	112	int
	113	inet_ether_input(m, frame_header, ifp, dl_tag, sync_ok)
	114	struct mbuf *m;
	115	char *frame_header;
	116	struct ifnet *ifp;
	117	u_long dl_tag;
	118	int sync_ok;
	119
	120	{
	121	register struct ether_header eh = (struct ether_header ) frame_header;
	122	register struct ifqueue *inq=0;
	123	u_short ether_type;
	124	int s;
	125	u_int16_t ptype = -1;
	126	unsigned char buf[18];
	127
	128	#if ISO \|\| LLC \|\| NETAT
	129	register struct llc *l;
	130	#endif
	131
	132	if ((ifp->if_flags & IFF_UP) == 0) {
	133	m_freem(m);
	134	return EJUSTRETURN;
	135	}
	136
137	ifp->if_lastchange = time;
138
139	if (eh->ether_dhost[0] & 1) {
140	if (bcmp((caddr_t)etherbroadcastaddr, (caddr_t)eh->ether_dhost,
141	sizeof(etherbroadcastaddr)) == 0)
142	m->m_flags \|= M_BCAST;
143	else
144	m->m_flags \|= M_MCAST;
145	}
146	if (m->m_flags & (M_BCAST\|M_MCAST))
147	ifp->if_imcasts++;
148
149	ether_type = ntohs(eh->ether_type);
150
151	#if NVLAN > 0
152	if (ether_type == vlan_proto) {
153	if (vlan_input(eh, m) < 0)
154	ifp->if_data.ifi_noproto++;
155	return EJUSTRETURN;
156	}
157	#endif /* NVLAN > 0 */
158
159	switch (ether_type) {
160
161	case ETHERTYPE_IP:
162	if (ipflow_fastforward(m))
163	return EJUSTRETURN;
164	ptype = mtod(m, struct ip *)->ip_p;
165	if ((sync_ok == 0) \|\|
166	(ptype != IPPROTO_TCP && ptype != IPPROTO_UDP)) {
167	schednetisr(NETISR_IP);
168	}
169
170	inq = &ipintrq;
171	break;
172
173	case ETHERTYPE_ARP:
174	schednetisr(NETISR_ARP);
175	inq = &arpintrq;
176	break;
177
178	default: {
179	return ENOENT;
180	}
181	}
182
183	if (inq == 0)
184	return ENOENT;
185
186	s = splimp();
187	if (IF_QFULL(inq)) {
188	IF_DROP(inq);
189	m_freem(m);
190	splx(s);
191	return EJUSTRETURN;
192	} else
193	IF_ENQUEUE(inq, m);
194	splx(s);
195
196	if ((sync_ok) &&
197	(ptype == IPPROTO_TCP \|\| ptype == IPPROTO_UDP)) {
198	extern void ipintr(void);
199
200	s = splnet();
201	ipintr();
202	splx(s);
203	}
204
205	return 0;
206	}
207
208
209
210
211	int
212	inet_ether_pre_output(ifp, m0, dst_netaddr, route, type, edst, dl_tag )
213	struct ifnet *ifp;
214	struct mbuf **m0;
215	struct sockaddr *dst_netaddr;
216	caddr_t route;
217	char *type;
218	char *edst;
219	u_long dl_tag;
220	{
221	struct rtentry rt0 = (struct rtentry ) route;
222	int s;
223	register struct mbuf m = m0;
224	register struct rtentry *rt;
225	register struct ether_header *eh;
226	int off, len = m->m_pkthdr.len;
227	int hlen; /* link layer header lenght */
228	struct arpcom *ac = IFP2AC(ifp);
229
230
231
232	if ((ifp->if_flags & (IFF_UP\|IFF_RUNNING)) != (IFF_UP\|IFF_RUNNING))
233	return ENETDOWN;
234
235	rt = rt0;
236	if (rt) {
237	if ((rt->rt_flags & RTF_UP) == 0) {
238	rt0 = rt = rtalloc1(dst_netaddr, 1, 0UL);
239	if (rt0)
9bccf70c	240	rtunref(rt);
1c79356b A	241	else
	242	return EHOSTUNREACH;
	243	}
	244
	245	if (rt->rt_flags & RTF_GATEWAY) {
	246	if (rt->rt_gwroute == 0)
	247	goto lookup;
	248	if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
	249	rtfree(rt); rt = rt0;
	250	lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1,
	251	0UL);
	252	if ((rt = rt->rt_gwroute) == 0)
	253	return (EHOSTUNREACH);
	254	}
	255	}
	256
	257
	258	if (rt->rt_flags & RTF_REJECT)
	259	if (rt->rt_rmx.rmx_expire == 0 \|\|
	260	time_second < rt->rt_rmx.rmx_expire)
	261	return (rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
	262	}
	263
	264	hlen = ETHER_HDR_LEN;
	265
	266	/*
	267	* Tell ether_frameout it's ok to loop packet unless negated below.
	268	*/
	269	m->m_flags \|= M_LOOP;
	270
	271	switch (dst_netaddr->sa_family) {
	272
	273	case AF_INET:
	274	if (!arpresolve(ac, rt, m, dst_netaddr, edst, rt0))
	275	return (EJUSTRETURN); /* if not yet resolved */
	276	off = m->m_pkthdr.len - m->m_len;
	277	(u_short )type = htons(ETHERTYPE_IP);
	278	break;
	279
	280	case AF_UNSPEC:
	281	m->m_flags &= ~M_LOOP;
	282	eh = (struct ether_header *)dst_netaddr->sa_data;
	283	(void)memcpy(edst, eh->ether_dhost, 6);
	284	(u_short )type = eh->ether_type;
	285	break;
	286
	287	default:
	288	kprintf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
	289	dst_netaddr->sa_family);
	290
	291	return EAFNOSUPPORT;
	292	}
	293
	294	return (0);
	295	}
	296
	297
	298	int
	299	ether_inet_prmod_ioctl(dl_tag, ifp, command, data)
	300	u_long dl_tag;
	301	struct ifnet *ifp;
	302	int command;
	303	caddr_t data;
	304	{
305	struct ifaddr ifa = (struct ifaddr ) data;
306	struct ifreq ifr = (struct ifreq ) data;
307	struct rslvmulti_req rsreq = (struct rslvmulti_req ) data;
308	int error = 0;
309	boolean_t funnel_state;
310	struct arpcom ac = (struct arpcom ) ifp;
311	struct sockaddr_dl *sdl;
312	struct sockaddr_in *sin;
313	u_char *e_addr;
314
315
316	#if 0
317	/* No tneeded at soo_ioctlis already funnelled */
318	funnel_state = thread_funnel_set(network_flock,TRUE);
319	#endif
320
321	switch (command) {
322	case SIOCRSLVMULTI: {
323	switch(rsreq->sa->sa_family) {
324
325	case AF_INET:
326	sin = (struct sockaddr_in *)rsreq->sa;
327	if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr)))
328	return EADDRNOTAVAIL;
329	MALLOC(sdl, struct sockaddr_dl , sizeof sdl, M_IFMADDR,
330	M_WAITOK);
331	sdl->sdl_len = sizeof *sdl;
332	sdl->sdl_family = AF_LINK;
333	sdl->sdl_index = ifp->if_index;
334	sdl->sdl_type = IFT_ETHER;
335	sdl->sdl_nlen = 0;
336	sdl->sdl_alen = ETHER_ADDR_LEN;
337	sdl->sdl_slen = 0;
338	e_addr = LLADDR(sdl);
339	ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr);
340	rsreq->llsa = (struct sockaddr )sdl;
341	return EJUSTRETURN;
342
343	default:
344	/*
345	* Well, the text isn't quite right, but it's the name
346	* that counts...
347	*/
348	return EAFNOSUPPORT;
349	}
350
351	}
352	case SIOCSIFADDR:
353	if ((ifp->if_flags & IFF_RUNNING) == 0) {
354	ifp->if_flags \|= IFF_UP;
355	dlil_ioctl(0, ifp, SIOCSIFFLAGS, (caddr_t) 0);
356	}
357
358	switch (ifa->ifa_addr->sa_family) {
359
360	case AF_INET:
361
362	if (ifp->if_init)
363	ifp->if_init(ifp->if_softc); /* before arpwhohas */
364
365	//
366	// See if another station has our IP address.
367	// i.e.: There is an address conflict! If a
368	// conflict exists, a message is sent to the
369	// console.
370	//
371	if (IA_SIN(ifa)->sin_addr.s_addr != 0)
372	{
373	/* don't bother for 0.0.0.0 */
374	ac->ac_ipaddr = IA_SIN(ifa)->sin_addr;
375	arpwhohas(ac, &IA_SIN(ifa)->sin_addr);
376	}
377
378	arp_ifinit(IFP2AC(ifp), ifa);
379
9bccf70c A	380	/*
	381	* Register new IP and MAC addresses with the kernel debugger
	382	* for the en0 interface.
	383	*/
	384	if (ifp->if_unit == 0)
	385	kdp_set_ip_and_mac_addresses(&(IA_SIN(ifa)->sin_addr), &(IFP2AC(ifp)->ac_enaddr));
	386
1c79356b A	387	break;
	388
	389	default:
	390	break;
	391	}
	392
	393	break;
	394
	395	case SIOCGIFADDR:
	396	{
	397	struct sockaddr *sa;
	398
	399	sa = (struct sockaddr *) & ifr->ifr_data;
	400	bcopy(IFP2AC(ifp)->ac_enaddr,
	401	(caddr_t) sa->sa_data, ETHER_ADDR_LEN);
	402	}
	403	break;
	404
	405	case SIOCSIFMTU:
	406	/*
9bccf70c	407	* IOKit IONetworkFamily will set the right MTU according to the driver
1c79356b	408	*/
9bccf70c A	409
9bccf70c A	410	return (0);
1c79356b A	411
	412	default:
	413	return EOPNOTSUPP;
	414	}
	415
	416	//(void) thread_funnel_set(network_flock, FALSE);
	417
	418	return (error);
	419	}
	420
	421
	422
	423
	424
	425	u_long
	426	ether_attach_inet(struct ifnet *ifp)
	427	{
	428	struct dlil_proto_reg_str reg;
	429	struct dlil_demux_desc desc;
	430	struct dlil_demux_desc desc2;
	431	u_long ip_dl_tag=0;
	432	u_short en_native=ETHERTYPE_IP;
	433	u_short arp_native=ETHERTYPE_ARP;
	434	int stat;
	435	int i;
	436
	437
	438	stat = dlil_find_dltag(ifp->if_family, ifp->if_unit, PF_INET, &ip_dl_tag);
	439	if (stat == 0)
	440	return ip_dl_tag;
	441
	442	TAILQ_INIT(&reg.demux_desc_head);
	443	desc.type = DLIL_DESC_RAW;
	444	desc.variants.bitmask.proto_id_length = 0;
	445	desc.variants.bitmask.proto_id = 0;
	446	desc.variants.bitmask.proto_id_mask = 0;
	447	desc.native_type = (char *) &en_native;
	448	TAILQ_INSERT_TAIL(&reg.demux_desc_head, &desc, next);
	449	reg.interface_family = ifp->if_family;
	450	reg.unit_number = ifp->if_unit;
	451	reg.input = inet_ether_input;
	452	reg.pre_output = inet_ether_pre_output;
	453	reg.event = 0;
	454	reg.offer = 0;
	455	reg.ioctl = ether_inet_prmod_ioctl;
	456	reg.default_proto = 1;
	457	reg.protocol_family = PF_INET;
	458
	459	desc2 = desc;
	460	desc2.native_type = (char *) &arp_native;
	461	TAILQ_INSERT_TAIL(&reg.demux_desc_head, &desc2, next);
	462
	463	stat = dlil_attach_protocol(&reg, &ip_dl_tag);
	464	if (stat) {
	465	printf("WARNING: ether_attach_inet can't attach ip to interface\n");
	466	return stat;
	467	}
1c79356b A	468	return ip_dl_tag;
1c79356b A	469	}
0b4e3aa0 A	470
	471	int ether_detach_inet(struct ifnet *ifp)
	472	{
	473	u_long ip_dl_tag = 0;
	474	int stat;
	475
	476	stat = dlil_find_dltag(ifp->if_family, ifp->if_unit, PF_INET, &ip_dl_tag);
	477	if (stat == 0) {
	478	stat = dlil_detach_protocol(ip_dl_tag);
	479	if (stat) {
	480	printf("WARNING: ether_detach_inet can't detach ip from interface\n");
	481	}
	482	}
	483	return stat;
	484	}
	485