/* * 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. * * @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93 */ #if NOTFB31 #include "opt_atalk.h" #include "opt_inet.h" #include "opt_ipx.h" #include "opt_bdg.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if INET #include #include #include #include #include #endif #if IPX #include #include #endif #if NS #include #include ushort ns_nettype; int ether_outputdebug = 0; int ether_inputdebug = 0; #endif #if ISO #include #include #include #include #endif /*#if LLC #include #include #endif*/ #include #if LLC && CCITT extern struct ifqueue pkintrq; #endif #if BRIDGE #include #endif /* #include "vlan.h" */ #if NVLAN > 0 #include #endif /* NVLAN > 0 */ static int ether_resolvemulti __P((struct ifnet *, struct sockaddr **, struct sockaddr *)); extern u_char etherbroadcastaddr[]; #define senderr(e) do { error = (e); goto bad;} while (0) #define IFP2AC(IFP) ((struct arpcom *)IFP) /* * Perform common duties while attaching to interface list */ void ether_ifattach(ifp) register struct ifnet *ifp; { register struct ifaddr *ifa; register struct sockaddr_dl *sdl; boolean_t funnel_state; funnel_state = thread_funnel_set(network_flock, TRUE); printf("ether_ifattach called for %s\n", ifp->if_name); ether_family_init(); ifp->if_name = "en"; ifp->if_family = APPLE_IF_FAM_ETHERNET; ifp->if_type = IFT_ETHER; ifp->if_addrlen = 6; ifp->if_hdrlen = 14; ifp->if_mtu = ETHERMTU; ifp->if_resolvemulti = ether_resolvemulti; if (ifp->if_baudrate == 0) ifp->if_baudrate = 10000000; dlil_if_attach(ifp); ifa = ifnet_addrs[ifp->if_index - 1]; if (ifa == 0) { printf("ether_ifattach: no lladdr!\n"); (void) thread_funnel_set(network_flock, funnel_state); return; } sdl = (struct sockaddr_dl *)ifa->ifa_addr; sdl->sdl_type = IFT_ETHER; sdl->sdl_alen = ifp->if_addrlen; bcopy((IFP2AC(ifp))->ac_enaddr, LLADDR(sdl), ifp->if_addrlen); #ifdef INET6 in6_ifattach_getifid(ifp); #endif (void) thread_funnel_set(network_flock, funnel_state); } SYSCTL_DECL(_net_link); SYSCTL_NODE(_net_link, IFT_ETHER, ether, CTLFLAG_RW, 0, "Ethernet"); int ether_resolvemulti(ifp, llsa, sa) 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; } } u_char ether_ipmulticast_min[6] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 }; u_char ether_ipmulticast_max[6] = { 0x01, 0x00, 0x5e, 0x7f, 0xff, 0xff }; /* * Add an Ethernet multicast address or range of addresses to the list for a * given interface. */ int ether_addmulti(ifr, ac) struct ifreq *ifr; register struct arpcom *ac; { register struct ether_multi *enm; struct sockaddr_in *sin; u_char addrlo[6]; u_char addrhi[6]; int s = splimp(); switch (ifr->ifr_addr.sa_family) { case AF_UNSPEC: bcopy(ifr->ifr_addr.sa_data, addrlo, 6); bcopy(addrlo, addrhi, 6); break; #if INET case AF_INET: sin = (struct sockaddr_in *)&(ifr->ifr_addr); if (sin->sin_addr.s_addr == INADDR_ANY) { /* * An IP address of INADDR_ANY means listen to all * of the Ethernet multicast addresses used for IP. * (This is for the sake of IP multicast routers.) */ bcopy(ether_ipmulticast_min, addrlo, 6); bcopy(ether_ipmulticast_max, addrhi, 6); } else { ETHER_MAP_IP_MULTICAST(&sin->sin_addr, addrlo); bcopy(addrlo, addrhi, 6); } break; #endif default: splx(s); return (EAFNOSUPPORT); } /* * Verify that we have valid Ethernet multicast addresses. */ if ((addrlo[0] & 0x01) != 1 || (addrhi[0] & 0x01) != 1) { splx(s); return (EINVAL); } /* * See if the address range is already in the list. */ ETHER_LOOKUP_MULTI(addrlo, addrhi, ac, enm); if (enm != NULL) { /* * Found it; just increment the reference count. */ ++enm->enm_refcount; splx(s); return (0); } /* * New address or range; malloc a new multicast record * and link it into the interface's multicast list. */ enm = (struct ether_multi *)_MALLOC(sizeof(*enm), M_IFMADDR, M_WAITOK); if (enm == NULL) { splx(s); return (ENOBUFS); } bcopy(addrlo, enm->enm_addrlo, 6); bcopy(addrhi, enm->enm_addrhi, 6); enm->enm_ac = ac; enm->enm_refcount = 1; enm->enm_next = ac->ac_multiaddrs; ac->ac_multiaddrs = enm; splx(s); /* * Return ENETRESET to inform the driver that the list has changed * and its reception filter should be adjusted accordingly. */ return (ENETRESET); } /* * Delete a multicast address record. */ int ether_delmulti(ifr, ac, ret_mca) struct ifreq *ifr; register struct arpcom *ac; struct ether_addr * ret_mca; { register struct ether_multi *enm; register struct ether_multi **p; struct sockaddr_in *sin; u_char addrlo[6]; u_char addrhi[6]; int s = splimp(); switch (ifr->ifr_addr.sa_family) { case AF_UNSPEC: bcopy(ifr->ifr_addr.sa_data, addrlo, 6); bcopy(addrlo, addrhi, 6); break; #if INET case AF_INET: sin = (struct sockaddr_in *)&(ifr->ifr_addr); if (sin->sin_addr.s_addr == INADDR_ANY) { /* * An IP address of INADDR_ANY means stop listening * to the range of Ethernet multicast addresses used * for IP. */ bcopy(ether_ipmulticast_min, addrlo, 6); bcopy(ether_ipmulticast_max, addrhi, 6); } else { ETHER_MAP_IP_MULTICAST(&sin->sin_addr, addrlo); bcopy(addrlo, addrhi, 6); } break; #endif default: splx(s); return (EAFNOSUPPORT); } /* * Look up the address in our list. */ ETHER_LOOKUP_MULTI(addrlo, addrhi, ac, enm); if (enm == NULL) { splx(s); return (ENXIO); } if (--enm->enm_refcount != 0) { /* * Still some claims to this record. */ splx(s); return (0); } /* save the low and high address of the range before deletion */ if (ret_mca) { *ret_mca = *((struct ether_addr *)addrlo); *(ret_mca + 1) = *((struct ether_addr *)addrhi); } /* * No remaining claims to this record; unlink and free it. */ for (p = &enm->enm_ac->ac_multiaddrs; *p != enm; p = &(*p)->enm_next) continue; *p = (*p)->enm_next; FREE(enm, M_IFMADDR); splx(s); /* * Return ENETRESET to inform the driver that the list has changed * and its reception filter should be adjusted accordingly. */ return (ENETRESET); } /* * 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); }