[apple/xnu.git] / bsd / net / if_ethersubr.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 (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.
 *
 *	@(#)if_ethersubr.c	8.1 (Berkeley) 6/10/93
 * $FreeBSD: src/sys/net/if_ethersubr.c,v 1.70.2.17 2001/08/01 00:47:49 fenner Exp $
 */

#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/route.h>
#include <net/if_llc.h>
#include <net/if_dl.h>
#include <net/if_types.h>

#if INET || INET6
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/if_ether.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#endif

#if IPX
#include <netipx/ipx.h>
#include <netipx/ipx_if.h>
#endif

#include <sys/socketvar.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 */

extern u_char	etherbroadcastaddr[];
#define senderr(e) do { error = (e); goto bad;} while (0)

/*
 * Perform common duties while attaching to interface list
 */

int
ether_resolvemulti(
	struct ifnet *ifp,
	struct sockaddr **llsa,
	struct sockaddr *sa)
{
	struct sockaddr_dl *sdl;
	struct sockaddr_in *sin;
	u_char *e_addr;
#if INET6
        struct sockaddr_in6 *sin6;
#endif


	switch(sa->sa_family) {
	case AF_UNSPEC:
		/* AppleTalk uses AF_UNSPEC for multicast registration.
		 * No mapping needed. Just check that it's a valid MC address.
		 */
		e_addr = &sa->sa_data[0];
		if ((e_addr[0] & 1) != 1)
			return EADDRNOTAVAIL;
		*llsa = 0;
		return 0;

	case AF_LINK:
		/* 
		 * No mapping needed. Just check that it's a valid MC address.
		 */
		sdl = (struct sockaddr_dl *)sa;
		e_addr = LLADDR(sdl);
		if ((e_addr[0] & 1) != 1)
			return EADDRNOTAVAIL;
		*llsa = 0;
		return 0;

#if INET
	case AF_INET:
		sin = (struct sockaddr_in *)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);
		*llsa = (struct sockaddr *)sdl;
		return 0;
#endif
#if INET6
        case AF_INET6:
                sin6 = (struct sockaddr_in6 *)sa;
                if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
                        /*
                         * An IP6 address of 0 means listen to all
                         * of the Ethernet multicast address used for IP6.
                         * (This is used for multicast routers.)
                         */
                        ifp->if_flags |= IFF_ALLMULTI;
                        *llsa = 0;
                        return 0;
                }
                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_IPV6_MULTICAST(&sin6->sin6_addr, e_addr);
                kprintf("ether_resolvemulti Adding %x:%x:%x:%x:%x:%x\n",
                                e_addr[0], e_addr[1], e_addr[2], e_addr[3], e_addr[4], e_addr[5]);
                *llsa = (struct sockaddr *)sdl;
                return 0;
#endif

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


/*
 * Convert Ethernet address to printable (loggable) representation.
 */
static u_char digits[] = "0123456789abcdef";
char *
ether_sprintf(p, ap)
	register u_char *p;
        register u_char *ap;
{	register char *cp;
        register i;

        for (cp = p, i = 0; i < 6; i++) {
                *cp++ = digits[*ap >> 4];
                *cp++ = digits[*ap++ & 0xf];
                *cp++ = ':';
        }
        *--cp = 0;
        return (p);
}
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 (c) 1982, 1989, 1993
	32	* The Regents of the University of California. All rights reserved.
	33	*
	34	* Redistribution and use in source and binary forms, with or without
	35	* modification, are permitted provided that the following conditions
	36	* are met:
	37	* 1. Redistributions of source code must retain the above copyright
	38	* notice, this list of conditions and the following disclaimer.
	39	* 2. Redistributions in binary form must reproduce the above copyright
	40	* notice, this list of conditions and the following disclaimer in the
	41	* documentation and/or other materials provided with the distribution.
	42	* 3. All advertising materials mentioning features or use of this software
	43	* must display the following acknowledgement:
	44	* This product includes software developed by the University of
	45	* California, Berkeley and its contributors.
	46	* 4. Neither the name of the University nor the names of its contributors
	47	* may be used to endorse or promote products derived from this software
	48	* without specific prior written permission.
	49	*
	50	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	51	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	52	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	53	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	54	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	55	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	56	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	57	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	58	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	59	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	60	* SUCH DAMAGE.
	61	*
	62	* @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93
9bccf70c	63	* $FreeBSD: src/sys/net/if_ethersubr.c,v 1.70.2.17 2001/08/01 00:47:49 fenner Exp $
1c79356b A	64	*/
1c79356b A	65
1c79356b A	66	#include <sys/param.h>
	67	#include <sys/systm.h>
	68	#include <sys/kernel.h>
	69	#include <sys/malloc.h>
	70	#include <sys/mbuf.h>
	71	#include <sys/socket.h>
	72	#include <sys/sockio.h>
	73	#include <sys/sysctl.h>
	74
	75	#include <net/if.h>
1c79356b A	76	#include <net/route.h>
	77	#include <net/if_llc.h>
	78	#include <net/if_dl.h>
	79	#include <net/if_types.h>
1c79356b	80
9bccf70c	81	#if INET \|\| INET6
1c79356b A	82	#include <netinet/in.h>
	83	#include <netinet/in_var.h>
	84	#include <netinet/if_ether.h>
	85	#include <netinet/in_systm.h>
	86	#include <netinet/ip.h>
	87	#endif
	88
	89	#if IPX
	90	#include <netipx/ipx.h>
	91	#include <netipx/ipx_if.h>
	92	#endif
	93
1c79356b A	94	#include <sys/socketvar.h>
	95
	96	#if LLC && CCITT
	97	extern struct ifqueue pkintrq;
	98	#endif
	99
	100	#if BRIDGE
	101	#include <net/bridge.h>
	102	#endif
	103
	104	/* #include "vlan.h" */
	105	#if NVLAN > 0
	106	#include <net/if_vlan_var.h>
	107	#endif /* NVLAN > 0 */
	108
1c79356b A	109	extern u_char etherbroadcastaddr[];
1c79356b A	110	#define senderr(e) do { error = (e); goto bad;} while (0)
1c79356b A	111
	112	/*
	113	* Perform common duties while attaching to interface list
	114	*/
	115
1c79356b	116	int
91447636 A	117	ether_resolvemulti(
	118	struct ifnet *ifp,
	119	struct sockaddr **llsa,
	120	struct sockaddr *sa)
1c79356b A	121	{
	122	struct sockaddr_dl *sdl;
	123	struct sockaddr_in *sin;
	124	u_char *e_addr;
	125	#if INET6
	126	struct sockaddr_in6 *sin6;
	127	#endif
	128
	129
	130	switch(sa->sa_family) {
	131	case AF_UNSPEC:
	132	/* AppleTalk uses AF_UNSPEC for multicast registration.
	133	* No mapping needed. Just check that it's a valid MC address.
	134	*/
	135	e_addr = &sa->sa_data[0];
	136	if ((e_addr[0] & 1) != 1)
	137	return EADDRNOTAVAIL;
	138	*llsa = 0;
	139	return 0;
	140
	141	case AF_LINK:
	142	/*
	143	* No mapping needed. Just check that it's a valid MC address.
	144	*/
	145	sdl = (struct sockaddr_dl *)sa;
	146	e_addr = LLADDR(sdl);
	147	if ((e_addr[0] & 1) != 1)
	148	return EADDRNOTAVAIL;
	149	*llsa = 0;
	150	return 0;
	151
	152	#if INET
	153	case AF_INET:
	154	sin = (struct sockaddr_in *)sa;
	155	if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr)))
	156	return EADDRNOTAVAIL;
	157	MALLOC(sdl, struct sockaddr_dl , sizeof sdl, M_IFMADDR,
	158	M_WAITOK);
	159	sdl->sdl_len = sizeof *sdl;
	160	sdl->sdl_family = AF_LINK;
	161	sdl->sdl_index = ifp->if_index;
	162	sdl->sdl_type = IFT_ETHER;
	163	sdl->sdl_nlen = 0;
	164	sdl->sdl_alen = ETHER_ADDR_LEN;
	165	sdl->sdl_slen = 0;
	166	e_addr = LLADDR(sdl);
	167	ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr);
	168	llsa = (struct sockaddr )sdl;
	169	return 0;
	170	#endif
	171	#if INET6
	172	case AF_INET6:
	173	sin6 = (struct sockaddr_in6 *)sa;
	174	if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
	175	/*
	176	* An IP6 address of 0 means listen to all
	177	* of the Ethernet multicast address used for IP6.
	178	* (This is used for multicast routers.)
	179	*/
	180	ifp->if_flags \|= IFF_ALLMULTI;
	181	*llsa = 0;
	182	return 0;
	183	}
	184	MALLOC(sdl, struct sockaddr_dl , sizeof sdl, M_IFMADDR,
185	M_WAITOK);
186	sdl->sdl_len = sizeof *sdl;
187	sdl->sdl_family = AF_LINK;
188	sdl->sdl_index = ifp->if_index;
189	sdl->sdl_type = IFT_ETHER;
190	sdl->sdl_nlen = 0;
191	sdl->sdl_alen = ETHER_ADDR_LEN;
192	sdl->sdl_slen = 0;
193	e_addr = LLADDR(sdl);
194	ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr);
195	kprintf("ether_resolvemulti Adding %x:%x:%x:%x:%x:%x\n",
196	e_addr[0], e_addr[1], e_addr[2], e_addr[3], e_addr[4], e_addr[5]);
197	llsa = (struct sockaddr )sdl;
198	return 0;
199	#endif
200
201	default:
202	/*
203	* Well, the text isn't quite right, but it's the name
204	* that counts...
205	*/
206	return EAFNOSUPPORT;
207	}
208	}
209
210
1c79356b A	211	/*
	212	* Convert Ethernet address to printable (loggable) representation.
	213	*/
	214	static u_char digits[] = "0123456789abcdef";
	215	char *
	216	ether_sprintf(p, ap)
	217	register u_char *p;
	218	register u_char *ap;
	219	{ register char *cp;
	220	register i;
	221
	222	for (cp = p, i = 0; i < 6; i++) {
	223	cp++ = digits[ap >> 4];
	224	cp++ = digits[ap++ & 0xf];
	225	*cp++ = ':';
	226	}
	227	*--cp = 0;
	228	return (p);
	229	}