1/* 2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 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 License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * Copyright (c) 1982, 1989, 1993 30 * The Regents of the University of California. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by the University of 43 * California, Berkeley and its contributors. 44 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 */ 61 62 63 64#include <sys/param.h> 65#include <sys/systm.h> 66#include <sys/kernel.h> 67#include <sys/malloc.h> 68#include <sys/mbuf.h> 69#include <sys/socket.h> 70#include <sys/sockio.h> 71#include <sys/sysctl.h> 72 73#include <net/if.h> 74#include <net/route.h> 75#include <net/if_llc.h> 76#include <net/if_dl.h> 77#include <net/if_types.h> 78#include <netinet/if_ether.h> 79#include <net/kpi_interface.h> 80#include <net/kpi_protocol.h> 81 82#include <sys/socketvar.h> 83 84#include <net/dlil.h> 85#include <netat/at_pat.h> 86#if NETAT 87extern struct ifqueue atalkintrq; 88#endif 89 90 91#if BRIDGE 92#include <net/bridge.h> 93#endif 94 95/* #include "vlan.h" */ 96#if NVLAN > 0 97#include <net/if_vlan_var.h> 98#endif /* NVLAN > 0 */ 99 100#include <net/ether_if_module.h> 101 102/* 103 * Process a received Ethernet packet; 104 * the packet is in the mbuf chain m without 105 * the ether header, which is provided separately. 106 */ 107static errno_t 108ether_at_input( 109 __unused ifnet_t ifp, 110 __unused protocol_family_t protocol_family, 111 mbuf_t m, 112 __unused char *frame_header) 113{ 114 errno_t error; 115 /* 116 * note: for AppleTalk we need to pass the enet header of the 117 * packet up stack. To do so, we made sure in that the FULL packet 118 * is copied in the mbuf by the driver, and only the m_data and 119 * length have been shifted to make IP and the other guys happy. 120 */ 121 122 m->m_data -= sizeof(struct ether_header); 123 m->m_len += sizeof(struct ether_header); 124 m->m_pkthdr.len += sizeof(struct ether_header); 125 126 error = proto_input(PF_APPLETALK, m); 127 128 if (error) 129 m_freem(m); 130 131 return error; 132} 133 134 135 136static errno_t 137ether_at_pre_output( 138 ifnet_t ifp, 139 __unused protocol_family_t protocol_family, 140 mbuf_t *m0, 141 const struct sockaddr *dst_netaddr, 142 __unused void *route, 143 char *type, 144 char *edst) 145{ 146 struct mbuf *m = *m0; 147 const struct ether_header *eh; 148 int hlen; /* link layer header length */ 149 150 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 151 return ENETDOWN; 152 153 hlen = ETHER_HDR_LEN; 154 155 /* 156 * Tell ether_frameout it's ok to loop packet unless negated below. 157 */ 158 m->m_flags |= M_LOOP; 159 160 switch (dst_netaddr->sa_family) { 161 case AF_UNSPEC: 162 m->m_flags &= ~M_LOOP; 163 eh = (const struct ether_header *)dst_netaddr->sa_data; 164 (void)memcpy(edst, eh->ether_dhost, 6); 165 *(u_short *)type = eh->ether_type; 166 break; 167 168 case AF_APPLETALK: 169 eh = (const struct ether_header *)dst_netaddr->sa_data; 170 (void)memcpy(edst, eh->ether_dhost, 6); 171 *(u_short *)type = htons(m->m_pkthdr.len); 172 break; 173 174 default: 175 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit, 176 dst_netaddr->sa_family); 177 return EAFNOSUPPORT; 178 } 179 180 return (0); 181} 182 183 184 185 186static errno_t 187ether_at_prmod_ioctl( 188 ifnet_t ifp, 189 __unused protocol_family_t protocol_family, 190 u_int32_t command, 191 void *data) 192{ 193 struct ifreq *ifr = data; 194 int error = 0; 195 196 switch (command) { 197 198 case SIOCSIFADDR: 199 if ((ifp->if_flags & IFF_RUNNING) == 0) { 200 ifnet_set_flags(ifp, IFF_UP, IFF_UP); 201 ifnet_ioctl(ifp, 0, SIOCSIFFLAGS, NULL); 202 } 203 204 break; 205 206 case SIOCGIFADDR: 207 ifnet_lladdr_copy_bytes(ifp, ifr->ifr_addr.sa_data, ETHER_ADDR_LEN); 208 break; 209 210 default: 211 error = EOPNOTSUPP; 212 break; 213 } 214 return (error); 215} 216 217 218 219__private_extern__ errno_t 220ether_attach_at( 221 ifnet_t ifp, 222 __unused protocol_family_t proto_family) 223{ 224 struct ifnet_attach_proto_param proto; 225 struct ifnet_demux_desc demux[2]; 226 u_int8_t atalk_snap[5] = {0x08, 0x00, 0x07, 0x80, 0x9b}; 227 u_int8_t aarp_snap[5] = {0x00, 0x00, 0x00, 0x80, 0xf3}; 228 int error; 229 230 bzero(demux, sizeof(demux)); 231 demux[0].type = DLIL_DESC_SNAP; 232 demux[0].data = atalk_snap; 233 demux[0].datalen = sizeof(atalk_snap); 234 demux[1].type = DLIL_DESC_SNAP; 235 demux[1].data = aarp_snap; 236 demux[1].datalen = sizeof(aarp_snap); 237 238 bzero(&proto, sizeof(proto)); 239 proto.demux_list = demux; 240 proto.demux_count = sizeof(demux) / sizeof(demux[0]); 241 proto.input = ether_at_input; 242 proto.pre_output = ether_at_pre_output; 243 proto.ioctl = ether_at_prmod_ioctl; 244 245 error = ifnet_attach_protocol(ifp, PF_APPLETALK, &proto); 246 if (error && error != EEXIST) { 247 printf("WARNING: ether_attach_at failed to attach" 248 " AppleTalk to %s%d\n", ifp->if_name, ifp->if_unit); 249 } 250 return (error); 251} 252 253__private_extern__ void 254ether_detach_at( 255 ifnet_t ifp, 256 __unused protocol_family_t proto_family) 257{ 258 (void)ifnet_detach_protocol(ifp, PF_APPLETALK); 259} 260