Annotation of src/sys/net/if_ethersubr.c, Revision 1.258
1.258 ! maxv 1: /* $NetBSD: if_ethersubr.c,v 1.257 2018/01/19 12:31:27 nakayama Exp $ */
1.44 itojun 2:
3: /*
4: * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5: * All rights reserved.
1.120 perry 6: *
1.44 itojun 7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. Neither the name of the project nor the names of its contributors
16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
1.120 perry 18: *
1.44 itojun 19: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
1.9 cgd 31:
1.1 cgd 32: /*
1.8 mycroft 33: * Copyright (c) 1982, 1989, 1993
34: * The Regents of the University of California. All rights reserved.
1.1 cgd 35: *
36: * Redistribution and use in source and binary forms, with or without
37: * modification, are permitted provided that the following conditions
38: * are met:
39: * 1. Redistributions of source code must retain the above copyright
40: * notice, this list of conditions and the following disclaimer.
41: * 2. Redistributions in binary form must reproduce the above copyright
42: * notice, this list of conditions and the following disclaimer in the
43: * documentation and/or other materials provided with the distribution.
1.113 agc 44: * 3. Neither the name of the University nor the names of its contributors
1.1 cgd 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: *
1.27 fvdl 60: * @(#)if_ethersubr.c 8.2 (Berkeley) 4/4/96
1.1 cgd 61: */
1.90 lukem 62:
63: #include <sys/cdefs.h>
1.258 ! maxv 64: __KERNEL_RCSID(0, "$NetBSD: if_ethersubr.c,v 1.257 2018/01/19 12:31:27 nakayama Exp $");
1.1 cgd 65:
1.212 pooka 66: #ifdef _KERNEL_OPT
1.33 jonathan 67: #include "opt_inet.h"
68: #include "opt_atalk.h"
1.112 martin 69: #include "opt_mbuftrace.h"
1.182 kefren 70: #include "opt_mpls.h"
1.30 matt 71: #include "opt_gateway.h"
1.135 pavel 72: #include "opt_pppoe.h"
1.206 ozaki-r 73: #include "opt_net_mpsafe.h"
1.212 pooka 74: #endif
75:
1.59 thorpej 76: #include "vlan.h"
1.81 martin 77: #include "pppoe.h"
1.78 thorpej 78: #include "bridge.h"
1.93 martin 79: #include "arp.h"
1.121 yamt 80: #include "agr.h"
1.30 matt 81:
1.200 joerg 82: #include <sys/sysctl.h>
1.4 mycroft 83: #include <sys/mbuf.h>
1.211 ozaki-r 84: #include <sys/mutex.h>
1.4 mycroft 85: #include <sys/ioctl.h>
86: #include <sys/errno.h>
1.158 dyoung 87: #include <sys/device.h>
1.204 tls 88: #include <sys/rnd.h>
1.207 riastrad 89: #include <sys/rndsource.h>
1.216 ozaki-r 90: #include <sys/cpu.h>
1.231 ozaki-r 91: #include <sys/kmem.h>
1.8 mycroft 92:
1.4 mycroft 93: #include <net/if.h>
94: #include <net/netisr.h>
95: #include <net/route.h>
96: #include <net/if_llc.h>
97: #include <net/if_dl.h>
1.8 mycroft 98: #include <net/if_types.h>
1.211 ozaki-r 99: #include <net/pktqueue.h>
1.93 martin 100:
1.158 dyoung 101: #include <net/if_media.h>
102: #include <dev/mii/mii.h>
103: #include <dev/mii/miivar.h>
104:
1.93 martin 105: #if NARP == 0
106: /*
1.102 jmmv 107: * XXX there should really be a way to issue this warning from within config(8)
1.93 martin 108: */
1.111 martin 109: #error You have included NETATALK or a pseudo-device in your configuration that depends on the presence of ethernet interfaces, but have no such interfaces configured. Check if you really need pseudo-device bridge, pppoe, vlan or options NETATALK.
1.93 martin 110: #endif
1.1 cgd 111:
1.69 thorpej 112: #include <net/bpf.h>
113:
1.22 is 114: #include <net/if_ether.h>
1.59 thorpej 115: #include <net/if_vlanvar.h>
1.22 is 116:
1.81 martin 117: #if NPPPOE > 0
118: #include <net/if_pppoe.h>
119: #endif
120:
1.121 yamt 121: #if NAGR > 0
122: #include <net/agr/ieee8023_slowprotocols.h> /* XXX */
123: #include <net/agr/ieee8023ad.h>
124: #include <net/agr/if_agrvar.h>
125: #endif
126:
1.78 thorpej 127: #if NBRIDGE > 0
128: #include <net/if_bridgevar.h>
129: #endif
130:
1.15 phil 131: #include <netinet/in.h>
1.1 cgd 132: #ifdef INET
1.4 mycroft 133: #include <netinet/in_var.h>
1.1 cgd 134: #endif
1.22 is 135: #include <netinet/if_inarp.h>
1.1 cgd 136:
1.44 itojun 137: #ifdef INET6
138: #ifndef INET
139: #include <netinet/in.h>
140: #endif
141: #include <netinet6/in6_var.h>
142: #include <netinet6/nd6.h>
143: #endif
144:
1.1 cgd 145:
1.133 liamjfoy 146: #include "carp.h"
147: #if NCARP > 0
148: #include <netinet/ip_carp.h>
149: #endif
150:
1.23 christos 151: #ifdef NETATALK
152: #include <netatalk/at.h>
153: #include <netatalk/at_var.h>
154: #include <netatalk/at_extern.h>
155:
156: #define llc_snap_org_code llc_un.type_snap.org_code
157: #define llc_snap_ether_type llc_un.type_snap.ether_type
158:
159: extern u_char at_org_code[3];
160: extern u_char aarp_org_code[3];
161: #endif /* NETATALK */
162:
1.182 kefren 163: #ifdef MPLS
164: #include <netmpls/mpls.h>
165: #include <netmpls/mpls_var.h>
166: #endif
167:
1.123 matt 168: static struct timeval bigpktppslim_last;
169: static int bigpktppslim = 2; /* XXX */
170: static int bigpktpps_count;
1.203 ozaki-r 171: static kmutex_t bigpktpps_lock __cacheline_aligned;
1.123 matt 172:
173:
1.118 yamt 174: const uint8_t etherbroadcastaddr[ETHER_ADDR_LEN] =
175: { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
1.121 yamt 176: const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] =
177: { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 };
1.8 mycroft 178: #define senderr(e) { error = (e); goto bad;}
1.1 cgd 179:
1.128 thorpej 180: static int ether_output(struct ifnet *, struct mbuf *,
1.222 ozaki-r 181: const struct sockaddr *, const struct rtentry *);
1.42 thorpej 182:
1.1 cgd 183: /*
184: * Ethernet output routine.
185: * Encapsulate a packet of type family for the local net.
1.22 is 186: * Assumes that ifp is actually pointer to ethercom structure.
1.1 cgd 187: */
1.42 thorpej 188: static int
1.178 dyoung 189: ether_output(struct ifnet * const ifp0, struct mbuf * const m0,
1.256 maxv 190: const struct sockaddr * const dst, const struct rtentry *rt)
1.1 cgd 191: {
1.256 maxv 192: uint8_t esrc[ETHER_ADDR_LEN], edst[ETHER_ADDR_LEN];
1.162 matt 193: uint16_t etype = 0;
1.122 christos 194: int error = 0, hdrcmplt = 0;
1.29 mrg 195: struct mbuf *m = m0;
1.151 dyoung 196: struct mbuf *mcopy = NULL;
1.29 mrg 197: struct ether_header *eh;
1.133 liamjfoy 198: struct ifnet *ifp = ifp0;
1.24 christos 199: #ifdef INET
1.22 is 200: struct arphdr *ah;
1.24 christos 201: #endif /* INET */
1.23 christos 202: #ifdef NETATALK
203: struct at_ifaddr *aa;
204: #endif /* NETATALK */
1.1 cgd 205:
1.104 matt 206: #ifdef MBUFTRACE
1.116 jonathan 207: m_claimm(m, ifp->if_mowner);
1.104 matt 208: #endif
1.133 liamjfoy 209:
210: #if NCARP > 0
211: if (ifp->if_type == IFT_CARP) {
212: struct ifaddr *ifa;
1.227 ozaki-r 213: int s = pserialize_read_enter();
1.133 liamjfoy 214:
215: /* loop back if this is going to the carp interface */
216: if (dst != NULL && ifp0->if_link_state == LINK_STATE_UP &&
1.227 ozaki-r 217: (ifa = ifa_ifwithaddr(dst)) != NULL) {
218: if (ifa->ifa_ifp == ifp0) {
219: pserialize_read_exit(s);
220: return looutput(ifp0, m, dst, rt);
221: }
222: }
223: pserialize_read_exit(s);
1.133 liamjfoy 224:
225: ifp = ifp->if_carpdev;
226: /* ac = (struct arpcom *)ifp; */
227:
1.247 msaitoh 228: if ((ifp0->if_flags & (IFF_UP | IFF_RUNNING)) !=
229: (IFF_UP | IFF_RUNNING))
1.133 liamjfoy 230: senderr(ENETDOWN);
231: }
232: #endif /* NCARP > 0 */
233:
1.247 msaitoh 234: if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) != (IFF_UP | IFF_RUNNING))
1.8 mycroft 235: senderr(ENETDOWN);
1.72 thorpej 236:
1.1 cgd 237: switch (dst->sa_family) {
238:
239: #ifdef INET
240: case AF_INET:
1.22 is 241: if (m->m_flags & M_BCAST)
1.256 maxv 242: memcpy(edst, etherbroadcastaddr, sizeof(edst));
1.145 dyoung 243: else if (m->m_flags & M_MCAST)
244: ETHER_MAP_IP_MULTICAST(&satocsin(dst)->sin_addr, edst);
1.217 christos 245: else if ((error = arpresolve(ifp, rt, m, dst, edst,
1.224 knakahar 246: sizeof(edst))) != 0) {
1.214 roy 247: return error == EWOULDBLOCK ? 0 : error;
1.224 knakahar 248: }
1.3 hpeyerl 249: /* If broadcasting on a simplex interface, loopback a copy */
250: if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
1.256 maxv 251: mcopy = m_copy(m, 0, M_COPYALL);
1.17 mycroft 252: etype = htons(ETHERTYPE_IP);
1.8 mycroft 253: break;
1.22 is 254:
255: case AF_ARP:
256: ah = mtod(m, struct arphdr *);
257: if (m->m_flags & M_BCAST)
1.256 maxv 258: memcpy(edst, etherbroadcastaddr, sizeof(edst));
1.131 mrg 259: else {
1.147 christos 260: void *tha = ar_tha(ah);
1.131 mrg 261:
1.173 christos 262: if (tha == NULL) {
1.258 ! maxv 263: /* fake with ARPHRD_IEEE1394 */
1.236 maxv 264: m_freem(m);
1.173 christos 265: return 0;
266: }
1.146 dyoung 267: memcpy(edst, tha, sizeof(edst));
1.131 mrg 268: }
1.120 perry 269:
1.22 is 270: ah->ar_hrd = htons(ARPHRD_ETHER);
271:
1.107 itojun 272: switch (ntohs(ah->ar_op)) {
1.22 is 273: case ARPOP_REVREQUEST:
274: case ARPOP_REVREPLY:
275: etype = htons(ETHERTYPE_REVARP);
276: break;
277:
278: case ARPOP_REQUEST:
279: case ARPOP_REPLY:
280: default:
281: etype = htons(ETHERTYPE_ARP);
282: }
283: break;
1.1 cgd 284: #endif
1.256 maxv 285:
1.44 itojun 286: #ifdef INET6
287: case AF_INET6:
1.238 ozaki-r 288: if (m->m_flags & M_BCAST)
1.256 maxv 289: memcpy(edst, etherbroadcastaddr, sizeof(edst));
1.238 ozaki-r 290: else if (m->m_flags & M_MCAST) {
291: ETHER_MAP_IPV6_MULTICAST(&satocsin6(dst)->sin6_addr,
292: edst);
293: } else {
294: error = nd6_resolve(ifp, rt, m, dst, edst,
295: sizeof(edst));
296: if (error != 0)
297: return error == EWOULDBLOCK ? 0 : error;
1.51 itojun 298: }
1.44 itojun 299: etype = htons(ETHERTYPE_IPV6);
300: break;
301: #endif
1.256 maxv 302:
1.23 christos 303: #ifdef NETATALK
1.250 maxv 304: case AF_APPLETALK: {
1.227 ozaki-r 305: struct ifaddr *ifa;
306: int s;
307:
1.224 knakahar 308: KERNEL_LOCK(1, NULL);
1.256 maxv 309:
1.226 rjs 310: if (!aarpresolve(ifp, m, (const struct sockaddr_at *)dst, edst)) {
1.23 christos 311: #ifdef NETATALKDEBUG
312: printf("aarpresolv failed\n");
1.256 maxv 313: #endif
1.224 knakahar 314: KERNEL_UNLOCK_ONE(NULL);
1.23 christos 315: return (0);
316: }
1.256 maxv 317:
1.23 christos 318: /*
319: * ifaddr is the first thing in at_ifaddr
320: */
1.227 ozaki-r 321: s = pserialize_read_enter();
322: ifa = at_ifawithnet((const struct sockaddr_at *)dst, ifp);
323: if (ifa == NULL) {
324: pserialize_read_exit(s);
325: KERNEL_UNLOCK_ONE(NULL);
1.256 maxv 326: /* XXX error? */
1.227 ozaki-r 327: goto bad;
1.224 knakahar 328: }
1.227 ozaki-r 329: aa = (struct at_ifaddr *)ifa;
1.120 perry 330:
1.23 christos 331: /*
332: * In the phase 2 case, we need to prepend an mbuf for the
333: * llc header. Since we must preserve the value of m,
334: * which is passed to us by value, we m_copy() the first
335: * mbuf, and use it for our llc header.
336: */
337: if (aa->aa_flags & AFA_PHASE2) {
338: struct llc llc;
339:
1.43 bouyer 340: M_PREPEND(m, sizeof(struct llc), M_DONTWAIT);
1.256 maxv 341: if (m == NULL) {
342: KERNEL_UNLOCK_ONE(NULL);
343: senderr(ENOBUFS);
344: }
345:
1.23 christos 346: llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP;
347: llc.llc_control = LLC_UI;
1.146 dyoung 348: memcpy(llc.llc_snap_org_code, at_org_code,
1.23 christos 349: sizeof(llc.llc_snap_org_code));
1.38 kim 350: llc.llc_snap_ether_type = htons(ETHERTYPE_ATALK);
1.147 christos 351: memcpy(mtod(m, void *), &llc, sizeof(struct llc));
1.23 christos 352: } else {
1.38 kim 353: etype = htons(ETHERTYPE_ATALK);
1.23 christos 354: }
1.227 ozaki-r 355: pserialize_read_exit(s);
1.224 knakahar 356: KERNEL_UNLOCK_ONE(NULL);
1.23 christos 357: break;
1.250 maxv 358: }
1.23 christos 359: #endif /* NETATALK */
1.256 maxv 360:
1.31 thorpej 361: case pseudo_AF_HDRCMPLT:
362: hdrcmplt = 1;
1.146 dyoung 363: memcpy(esrc,
364: ((const struct ether_header *)dst->sa_data)->ether_shost,
365: sizeof(esrc));
1.31 thorpej 366: /* FALLTHROUGH */
367:
1.1 cgd 368: case AF_UNSPEC:
1.250 maxv 369: memcpy(edst,
1.146 dyoung 370: ((const struct ether_header *)dst->sa_data)->ether_dhost,
371: sizeof(edst));
1.8 mycroft 372: /* AF_UNSPEC doesn't swap the byte order of the ether_type. */
1.145 dyoung 373: etype = ((const struct ether_header *)dst->sa_data)->ether_type;
1.8 mycroft 374: break;
1.1 cgd 375:
376: default:
1.21 christos 377: printf("%s: can't handle af%d\n", ifp->if_xname,
1.1 cgd 378: dst->sa_family);
1.8 mycroft 379: senderr(EAFNOSUPPORT);
1.1 cgd 380: }
381:
1.182 kefren 382: #ifdef MPLS
1.224 knakahar 383: KERNEL_LOCK(1, NULL);
1.210 ozaki-r 384: {
385: struct m_tag *mtag;
386: mtag = m_tag_find(m, PACKET_TAG_MPLS, NULL);
387: if (mtag != NULL) {
388: /* Having the tag itself indicates it's MPLS */
1.184 dyoung 389: etype = htons(ETHERTYPE_MPLS);
1.210 ozaki-r 390: m_tag_delete(m, mtag);
391: }
1.184 dyoung 392: }
1.224 knakahar 393: KERNEL_UNLOCK_ONE(NULL);
1.182 kefren 394: #endif
395:
1.1 cgd 396: if (mcopy)
1.145 dyoung 397: (void)looutput(ifp, mcopy, dst, rt);
1.16 mycroft 398:
1.256 maxv 399: KASSERT((m->m_flags & M_PKTHDR) != 0);
400:
401: /*
402: * If no ether type is set, this must be a 802.2 formatted packet.
1.50 matt 403: */
404: if (etype == 0)
405: etype = htons(m->m_pkthdr.len);
1.256 maxv 406:
1.1 cgd 407: /*
1.256 maxv 408: * Add local net header. If no space in first mbuf, allocate another.
1.1 cgd 409: */
1.256 maxv 410: M_PREPEND(m, sizeof(struct ether_header), M_DONTWAIT);
411: if (m == NULL)
1.8 mycroft 412: senderr(ENOBUFS);
1.256 maxv 413:
1.1 cgd 414: eh = mtod(m, struct ether_header *);
1.96 thorpej 415: /* Note: etype is already in network byte order. */
1.256 maxv 416: memcpy(&eh->ether_type, &etype, sizeof(eh->ether_type));
1.250 maxv 417: memcpy(eh->ether_dhost, edst, sizeof(edst));
1.31 thorpej 418: if (hdrcmplt)
1.146 dyoung 419: memcpy(eh->ether_shost, esrc, sizeof(eh->ether_shost));
1.31 thorpej 420: else
1.153 dyoung 421: memcpy(eh->ether_shost, CLLADDR(ifp->if_sadl),
1.31 thorpej 422: sizeof(eh->ether_shost));
1.77 thorpej 423:
1.133 liamjfoy 424: #if NCARP > 0
425: if (ifp0 != ifp && ifp0->if_type == IFT_CARP) {
1.153 dyoung 426: memcpy(eh->ether_shost, CLLADDR(ifp0->if_sadl),
1.133 liamjfoy 427: sizeof(eh->ether_shost));
428: }
1.256 maxv 429: #endif
1.133 liamjfoy 430:
1.195 rmind 431: if ((error = pfil_run_hooks(ifp->if_pfil, &m, ifp, PFIL_OUT)) != 0)
1.77 thorpej 432: return (error);
433: if (m == NULL)
434: return (0);
435:
1.78 thorpej 436: #if NBRIDGE > 0
437: /*
438: * Bridges require special output handling.
439: */
440: if (ifp->if_bridge)
1.256 maxv 441: return bridge_output(ifp, m, NULL, NULL);
1.78 thorpej 442: #endif
443:
1.133 liamjfoy 444: #if NCARP > 0
445: if (ifp != ifp0)
446: ifp0->if_obytes += m->m_pkthdr.len + ETHER_HDR_LEN;
1.256 maxv 447: #endif
1.133 liamjfoy 448:
1.77 thorpej 449: #ifdef ALTQ
1.224 knakahar 450: KERNEL_LOCK(1, NULL);
1.77 thorpej 451: /*
452: * If ALTQ is enabled on the parent interface, do
453: * classification; the queueing discipline might not
454: * require classification, but might require the
455: * address family/header pointer in the pktattr.
456: */
457: if (ALTQ_IS_ENABLED(&ifp->if_snd))
1.220 knakahar 458: altq_etherclassify(&ifp->if_snd, m);
1.224 knakahar 459: KERNEL_UNLOCK_ONE(NULL);
1.77 thorpej 460: #endif
1.221 knakahar 461: return ifq_enqueue(ifp, m);
1.1 cgd 462:
463: bad:
464: if (m)
465: m_freem(m);
466: return (error);
467: }
1.76 thorpej 468:
469: #ifdef ALTQ
470: /*
471: * This routine is a slight hack to allow a packet to be classified
472: * if the Ethernet headers are present. It will go away when ALTQ's
473: * classification engine understands link headers.
474: */
475: void
1.220 knakahar 476: altq_etherclassify(struct ifaltq *ifq, struct mbuf *m)
1.76 thorpej 477: {
478: struct ether_header *eh;
1.255 maxv 479: struct mbuf *mtop = m;
1.162 matt 480: uint16_t ether_type;
1.76 thorpej 481: int hlen, af, hdrsize;
1.147 christos 482: void *hdr;
1.76 thorpej 483:
1.255 maxv 484: KASSERT((mtop->m_flags & M_PKTHDR) != 0);
485:
1.76 thorpej 486: hlen = ETHER_HDR_LEN;
487: eh = mtod(m, struct ether_header *);
488:
489: ether_type = htons(eh->ether_type);
490:
491: if (ether_type < ETHERMTU) {
492: /* LLC/SNAP */
493: struct llc *llc = (struct llc *)(eh + 1);
494: hlen += 8;
495:
496: if (m->m_len < hlen ||
497: llc->llc_dsap != LLC_SNAP_LSAP ||
498: llc->llc_ssap != LLC_SNAP_LSAP ||
499: llc->llc_control != LLC_UI) {
500: /* Not SNAP. */
501: goto bad;
502: }
503:
504: ether_type = htons(llc->llc_un.type_snap.ether_type);
505: }
506:
507: switch (ether_type) {
508: case ETHERTYPE_IP:
509: af = AF_INET;
510: hdrsize = 20; /* sizeof(struct ip) */
511: break;
512:
513: case ETHERTYPE_IPV6:
514: af = AF_INET6;
515: hdrsize = 40; /* sizeof(struct ip6_hdr) */
516: break;
517:
518: default:
519: af = AF_UNSPEC;
520: hdrsize = 0;
521: break;
522: }
523:
1.95 itojun 524: while (m->m_len <= hlen) {
525: hlen -= m->m_len;
526: m = m->m_next;
1.255 maxv 527: if (m == NULL)
528: goto bad;
1.95 itojun 529: }
1.255 maxv 530:
1.76 thorpej 531: if (m->m_len < (hlen + hdrsize)) {
532: /*
1.95 itojun 533: * protocol header not in a single mbuf.
534: * We can't cope with this situation right
1.76 thorpej 535: * now (but it shouldn't ever happen, really, anyhow).
536: */
1.92 itojun 537: #ifdef DEBUG
1.78 thorpej 538: printf("altq_etherclassify: headers span multiple mbufs: "
539: "%d < %d\n", m->m_len, (hlen + hdrsize));
1.92 itojun 540: #endif
1.76 thorpej 541: goto bad;
542: }
543:
544: m->m_data += hlen;
545: m->m_len -= hlen;
546:
1.147 christos 547: hdr = mtod(m, void *);
1.76 thorpej 548:
1.255 maxv 549: if (ALTQ_NEEDS_CLASSIFY(ifq)) {
550: mtop->m_pkthdr.pattr_class =
1.76 thorpej 551: (*ifq->altq_classify)(ifq->altq_clfier, m, af);
1.255 maxv 552: }
553: mtop->m_pkthdr.pattr_af = af;
554: mtop->m_pkthdr.pattr_hdr = hdr;
1.76 thorpej 555:
556: m->m_data -= hlen;
557: m->m_len += hlen;
558:
559: return;
560:
1.250 maxv 561: bad:
1.255 maxv 562: mtop->m_pkthdr.pattr_class = NULL;
563: mtop->m_pkthdr.pattr_hdr = NULL;
564: mtop->m_pkthdr.pattr_af = AF_UNSPEC;
1.76 thorpej 565: }
566: #endif /* ALTQ */
1.1 cgd 567:
568: /*
569: * Process a received Ethernet packet;
1.42 thorpej 570: * the packet is in the mbuf chain m with
571: * the ether header.
1.1 cgd 572: */
1.133 liamjfoy 573: void
1.58 matt 574: ether_input(struct ifnet *ifp, struct mbuf *m)
1.1 cgd 575: {
1.91 thorpej 576: struct ethercom *ec = (struct ethercom *) ifp;
1.199 rmind 577: pktqueue_t *pktq = NULL;
578: struct ifqueue *inq = NULL;
1.162 matt 579: uint16_t etype;
1.42 thorpej 580: struct ether_header *eh;
1.187 matt 581: size_t ehlen;
1.204 tls 582: static int earlypkts;
1.198 msaitoh 583: int isr = 0;
1.194 joerg 584: #if defined (LLC) || defined(NETATALK)
1.29 mrg 585: struct llc *l;
1.18 christos 586: #endif
1.1 cgd 587:
1.216 ozaki-r 588: KASSERT(!cpu_intr_p());
1.253 maxv 589: KASSERT((m->m_flags & M_PKTHDR) != 0);
1.216 ozaki-r 590:
1.8 mycroft 591: if ((ifp->if_flags & IFF_UP) == 0) {
592: m_freem(m);
593: return;
594: }
1.42 thorpej 595:
1.104 matt 596: #ifdef MBUFTRACE
1.116 jonathan 597: m_claimm(m, &ec->ec_rx_mowner);
1.104 matt 598: #endif
1.42 thorpej 599: eh = mtod(m, struct ether_header *);
1.63 thorpej 600: etype = ntohs(eh->ether_type);
1.187 matt 601: ehlen = sizeof(*eh);
1.63 thorpej 602:
1.250 maxv 603: if (__predict_false(earlypkts < 100 || !rnd_initial_entropy)) {
1.204 tls 604: rnd_add_data(NULL, eh, ehlen, 0);
605: earlypkts++;
606: }
607:
1.63 thorpej 608: /*
1.258 ! maxv 609: * Determine if the packet is within its size limits. For MPLS the
! 610: * header length is variable, so we skip the check.
1.63 thorpej 611: */
1.182 kefren 612: if (etype != ETHERTYPE_MPLS && m->m_pkthdr.len >
1.83 thorpej 613: ETHER_MAX_FRAME(ifp, etype, m->m_flags & M_HASFCS)) {
1.203 ozaki-r 614: mutex_enter(&bigpktpps_lock);
1.123 matt 615: if (ppsratecheck(&bigpktppslim_last, &bigpktpps_count,
616: bigpktppslim)) {
617: printf("%s: discarding oversize frame (len=%d)\n",
618: ifp->if_xname, m->m_pkthdr.len);
619: }
1.203 ozaki-r 620: mutex_exit(&bigpktpps_lock);
1.63 thorpej 621: m_freem(m);
622: return;
623: }
1.77 thorpej 624:
1.84 thorpej 625: if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
626: /*
627: * If this is not a simplex interface, drop the packet
628: * if it came from us.
629: */
630: if ((ifp->if_flags & IFF_SIMPLEX) == 0 &&
1.153 dyoung 631: memcmp(CLLADDR(ifp->if_sadl), eh->ether_shost,
1.84 thorpej 632: ETHER_ADDR_LEN) == 0) {
633: m_freem(m);
634: return;
635: }
636:
637: if (memcmp(etherbroadcastaddr,
638: eh->ether_dhost, ETHER_ADDR_LEN) == 0)
639: m->m_flags |= M_BCAST;
640: else
641: m->m_flags |= M_MCAST;
642: ifp->if_imcasts++;
643: }
644:
1.79 thorpej 645: /* If the CRC is still on the packet, trim it off. */
646: if (m->m_flags & M_HASFCS) {
647: m_adj(m, -ETHER_CRC_LEN);
648: m->m_flags &= ~M_HASFCS;
649: }
650:
1.42 thorpej 651: ifp->if_ibytes += m->m_pkthdr.len;
1.78 thorpej 652:
1.201 ozaki-r 653: #if NCARP > 0
654: if (__predict_false(ifp->if_carp && ifp->if_type != IFT_CARP)) {
655: /*
656: * clear M_PROMISC, in case the packets comes from a
657: * vlan
658: */
1.137 rpaulo 659: m->m_flags &= ~M_PROMISC;
1.201 ozaki-r 660: if (carp_input(m, (uint8_t *)&eh->ether_shost,
661: (uint8_t *)&eh->ether_dhost, eh->ether_type) == 0)
1.137 rpaulo 662: return;
1.201 ozaki-r 663: }
1.253 maxv 664: #endif
1.250 maxv 665:
1.247 msaitoh 666: if ((m->m_flags & (M_BCAST | M_MCAST | M_PROMISC)) == 0 &&
1.201 ozaki-r 667: (ifp->if_flags & IFF_PROMISC) != 0 &&
668: memcmp(CLLADDR(ifp->if_sadl), eh->ether_dhost,
669: ETHER_ADDR_LEN) != 0) {
670: m->m_flags |= M_PROMISC;
1.70 bouyer 671: }
1.78 thorpej 672:
1.106 bouyer 673: if ((m->m_flags & M_PROMISC) == 0) {
1.195 rmind 674: if (pfil_run_hooks(ifp->if_pfil, &m, ifp, PFIL_IN) != 0)
1.106 bouyer 675: return;
676: if (m == NULL)
677: return;
1.78 thorpej 678:
1.106 bouyer 679: eh = mtod(m, struct ether_header *);
680: etype = ntohs(eh->ether_type);
681: }
1.70 bouyer 682:
1.172 darran 683: #if NAGR > 0
684: if (ifp->if_agrprivate &&
685: __predict_true(etype != ETHERTYPE_SLOWPROTOCOLS)) {
686: m->m_flags &= ~M_PROMISC;
687: agr_input(ifp, m);
688: return;
689: }
1.253 maxv 690: #endif
1.172 darran 691:
1.91 thorpej 692: /*
693: * If VLANs are configured on the interface, check to
694: * see if the device performed the decapsulation and
695: * provided us with the tag.
696: */
1.244 knakahar 697: if (ec->ec_nvlans && vlan_has_tag(m)) {
1.70 bouyer 698: #if NVLAN > 0
699: /*
700: * vlan_input() will either recursively call ether_input()
701: * or drop the packet.
702: */
1.91 thorpej 703: vlan_input(ifp, m);
704: #else
705: m_freem(m);
1.70 bouyer 706: #endif
1.61 thorpej 707: return;
708: }
1.1 cgd 709:
1.59 thorpej 710: /*
711: * Handle protocols that expect to have the Ethernet header
712: * (and possibly FCS) intact.
713: */
714: switch (etype) {
1.187 matt 715: case ETHERTYPE_VLAN: {
716: struct ether_vlan_header *evl = (void *)eh;
1.253 maxv 717:
1.187 matt 718: /*
719: * If there is a tag of 0, then the VLAN header was probably
720: * just being used to store the priority. Extract the ether
1.250 maxv 721: * type, and if IP or IPV6, let them deal with it.
1.187 matt 722: */
1.254 maxv 723: if (m->m_len >= sizeof(*evl) &&
1.253 maxv 724: EVL_VLANOFTAG(evl->evl_tag) == 0) {
1.187 matt 725: etype = ntohs(evl->evl_proto);
726: ehlen = sizeof(*evl);
1.253 maxv 727: if ((m->m_flags & M_PROMISC) == 0 &&
728: (etype == ETHERTYPE_IP ||
729: etype == ETHERTYPE_IPV6))
1.187 matt 730: break;
731: }
1.253 maxv 732:
1.59 thorpej 733: #if NVLAN > 0
734: /*
735: * vlan_input() will either recursively call ether_input()
736: * or drop the packet.
737: */
1.253 maxv 738: if (ec->ec_nvlans != 0)
1.63 thorpej 739: vlan_input(ifp, m);
1.65 enami 740: else
1.253 maxv 741: #endif
1.65 enami 742: m_freem(m);
1.253 maxv 743:
1.59 thorpej 744: return;
1.187 matt 745: }
1.253 maxv 746:
1.81 martin 747: #if NPPPOE > 0
748: case ETHERTYPE_PPPOEDISC:
1.218 ozaki-r 749: pppoedisc_input(ifp, m);
750: return;
1.253 maxv 751:
1.81 martin 752: case ETHERTYPE_PPPOE:
1.218 ozaki-r 753: pppoe_input(ifp, m);
1.81 martin 754: return;
1.253 maxv 755: #endif
756:
1.121 yamt 757: case ETHERTYPE_SLOWPROTOCOLS: {
758: uint8_t subtype;
759:
1.257 nakayama 760: KASSERTMSG((m->m_pkthdr.len >= sizeof(*eh) + sizeof(subtype)),
1.253 maxv 761: "too short slow protocol packet");
762:
1.121 yamt 763: m_copydata(m, sizeof(*eh), sizeof(subtype), &subtype);
764: switch (subtype) {
765: #if NAGR > 0
766: case SLOWPROTOCOLS_SUBTYPE_LACP:
767: if (ifp->if_agrprivate) {
768: ieee8023ad_lacp_input(ifp, m);
769: return;
770: }
771: break;
772:
773: case SLOWPROTOCOLS_SUBTYPE_MARKER:
774: if (ifp->if_agrprivate) {
775: ieee8023ad_marker_input(ifp, m);
776: return;
777: }
778: break;
779: #endif /* NAGR > 0 */
1.253 maxv 780:
1.121 yamt 781: default:
782: if (subtype == 0 || subtype > 10) {
783: /* illegal value */
784: m_freem(m);
785: return;
786: }
787: /* unknown subtype */
788: break;
789: }
790: /* FALLTHROUGH */
791: }
1.253 maxv 792:
1.59 thorpej 793: default:
1.106 bouyer 794: if (m->m_flags & M_PROMISC) {
795: m_freem(m);
796: return;
797: }
1.59 thorpej 798: }
1.42 thorpej 799:
1.45 thorpej 800: /* If the CRC is still on the packet, trim it off. */
1.79 thorpej 801: if (m->m_flags & M_HASFCS) {
1.45 thorpej 802: m_adj(m, -ETHER_CRC_LEN);
1.79 thorpej 803: m->m_flags &= ~M_HASFCS;
804: }
1.42 thorpej 805:
1.253 maxv 806: if (etype > ETHERMTU + sizeof(struct ether_header)) {
1.139 is 807: /* Strip off the Ethernet header. */
1.187 matt 808: m_adj(m, ehlen);
1.139 is 809:
810: switch (etype) {
1.1 cgd 811: #ifdef INET
1.139 is 812: case ETHERTYPE_IP:
1.30 matt 813: #ifdef GATEWAY
1.139 is 814: if (ipflow_fastforward(m))
815: return;
1.30 matt 816: #endif
1.199 rmind 817: pktq = ip_pktq;
1.139 is 818: break;
1.1 cgd 819:
1.139 is 820: case ETHERTYPE_ARP:
1.198 msaitoh 821: isr = NETISR_ARP;
1.139 is 822: inq = &arpintrq;
823: break;
1.7 glass 824:
1.139 is 825: case ETHERTYPE_REVARP:
826: revarpinput(m); /* XXX queue? */
827: return;
1.1 cgd 828: #endif
1.253 maxv 829:
1.44 itojun 830: #ifdef INET6
1.139 is 831: case ETHERTYPE_IPV6:
1.196 pooka 832: if (__predict_false(!in6_present)) {
833: m_freem(m);
834: return;
835: }
1.250 maxv 836: #ifdef GATEWAY
1.192 christos 837: if (ip6flow_fastforward(&m))
1.148 liamjfoy 838: return;
839: #endif
1.199 rmind 840: pktq = ip6_pktq;
1.139 is 841: break;
1.44 itojun 842: #endif
1.253 maxv 843:
1.23 christos 844: #ifdef NETATALK
1.174 isaki 845: case ETHERTYPE_ATALK:
1.198 msaitoh 846: isr = NETISR_ATALK;
1.174 isaki 847: inq = &atintrq1;
848: break;
1.253 maxv 849:
1.174 isaki 850: case ETHERTYPE_AARP:
1.253 maxv 851: aarpinput(ifp, m); /* XXX queue? */
1.174 isaki 852: return;
1.253 maxv 853: #endif
854:
1.182 kefren 855: #ifdef MPLS
856: case ETHERTYPE_MPLS:
1.198 msaitoh 857: isr = NETISR_MPLS;
1.182 kefren 858: inq = &mplsintrq;
859: break;
860: #endif
1.253 maxv 861:
1.139 is 862: default:
863: m_freem(m);
864: return;
865: }
866: } else {
1.254 maxv 867: KASSERT(ehlen == sizeof(*eh));
1.194 joerg 868: #if defined (LLC) || defined (NETATALK)
1.254 maxv 869: if (m->m_len < sizeof(*eh) + sizeof(struct llc)) {
1.249 maxv 870: goto dropanyway;
871: }
1.139 is 872: l = (struct llc *)(eh+1);
1.254 maxv 873:
1.8 mycroft 874: switch (l->llc_dsap) {
1.23 christos 875: #ifdef NETATALK
876: case LLC_SNAP_LSAP:
877: switch (l->llc_control) {
878: case LLC_UI:
879: if (l->llc_ssap != LLC_SNAP_LSAP) {
880: goto dropanyway;
881: }
1.120 perry 882:
1.166 dyoung 883: if (memcmp(&(l->llc_snap_org_code)[0],
1.23 christos 884: at_org_code, sizeof(at_org_code)) == 0 &&
885: ntohs(l->llc_snap_ether_type) ==
1.38 kim 886: ETHERTYPE_ATALK) {
1.23 christos 887: inq = &atintrq2;
1.139 is 888: m_adj(m, sizeof(struct ether_header)
889: + sizeof(struct llc));
1.198 msaitoh 890: isr = NETISR_ATALK;
1.23 christos 891: break;
892: }
893:
1.166 dyoung 894: if (memcmp(&(l->llc_snap_org_code)[0],
1.23 christos 895: aarp_org_code,
896: sizeof(aarp_org_code)) == 0 &&
897: ntohs(l->llc_snap_ether_type) ==
898: ETHERTYPE_AARP) {
1.254 maxv 899: m_adj(m, sizeof(struct ether_header)
1.139 is 900: + sizeof(struct llc));
1.23 christos 901: aarpinput(ifp, m); /* XXX */
1.254 maxv 902: return;
1.23 christos 903: }
1.120 perry 904:
1.23 christos 905: default:
906: goto dropanyway;
907: }
908: break;
1.249 maxv 909: #endif
1.1 cgd 910: dropanyway:
911: default:
1.8 mycroft 912: m_freem(m);
913: return;
914: }
1.250 maxv 915: #else /* LLC || NETATALK */
1.139 is 916: m_freem(m);
917: return;
1.250 maxv 918: #endif /* LLC || NETATALK */
1.1 cgd 919: }
920:
1.199 rmind 921: if (__predict_true(pktq)) {
1.229 ozaki-r 922: #ifdef NET_MPSAFE
923: const u_int h = curcpu()->ci_index;
924: #else
1.199 rmind 925: const uint32_t h = pktq_rps_hash(m);
1.229 ozaki-r 926: #endif
1.199 rmind 927: if (__predict_false(!pktq_enqueue(pktq, m, h))) {
928: m_freem(m);
929: }
930: return;
931: }
932:
933: if (__predict_false(!inq)) {
934: /* Should not happen. */
935: m_freem(m);
936: return;
937: }
1.228 ozaki-r 938:
939: IFQ_LOCK(inq);
1.1 cgd 940: if (IF_QFULL(inq)) {
941: IF_DROP(inq);
1.228 ozaki-r 942: IFQ_UNLOCK(inq);
1.1 cgd 943: m_freem(m);
1.198 msaitoh 944: } else {
1.1 cgd 945: IF_ENQUEUE(inq, m);
1.228 ozaki-r 946: IFQ_UNLOCK(inq);
1.198 msaitoh 947: schednetisr(isr);
948: }
1.1 cgd 949: }
950:
951: /*
952: * Convert Ethernet address to printable (loggable) representation.
953: */
954: char *
1.58 matt 955: ether_sprintf(const u_char *ap)
1.1 cgd 956: {
1.129 christos 957: static char etherbuf[3 * ETHER_ADDR_LEN];
958: return ether_snprintf(etherbuf, sizeof(etherbuf), ap);
959: }
960:
961: char *
962: ether_snprintf(char *buf, size_t len, const u_char *ap)
963: {
964: char *cp = buf;
965: size_t i;
1.1 cgd 966:
1.129 christos 967: for (i = 0; i < len / 3; i++) {
1.124 christos 968: *cp++ = hexdigits[*ap >> 4];
969: *cp++ = hexdigits[*ap++ & 0xf];
1.1 cgd 970: *cp++ = ':';
971: }
1.129 christos 972: *--cp = '\0';
973: return buf;
1.1 cgd 974: }
1.8 mycroft 975:
976: /*
977: * Perform common duties while attaching to interface list
978: */
979: void
1.162 matt 980: ether_ifattach(struct ifnet *ifp, const uint8_t *lla)
1.8 mycroft 981: {
1.104 matt 982: struct ethercom *ec = (struct ethercom *)ifp;
1.8 mycroft 983:
984: ifp->if_type = IFT_ETHER;
1.94 enami 985: ifp->if_hdrlen = ETHER_HDR_LEN;
1.73 thorpej 986: ifp->if_dlt = DLT_EN10MB;
1.8 mycroft 987: ifp->if_mtu = ETHERMTU;
1.12 mycroft 988: ifp->if_output = ether_output;
1.216 ozaki-r 989: ifp->_if_input = ether_input;
1.54 thorpej 990: if (ifp->if_baudrate == 0)
991: ifp->if_baudrate = IF_Mbps(10); /* just a default */
1.75 thorpej 992:
1.230 ozaki-r 993: if (lla != NULL)
994: if_set_sadl(ifp, lla, ETHER_ADDR_LEN, !ETHER_IS_LOCAL(lla));
1.75 thorpej 995:
1.104 matt 996: LIST_INIT(&ec->ec_multiaddrs);
1.233 ozaki-r 997: ec->ec_lock = mutex_obj_alloc(MUTEX_DEFAULT, IPL_NET);
1.26 is 998: ifp->if_broadcastaddr = etherbroadcastaddr;
1.177 joerg 999: bpf_attach(ifp, DLT_EN10MB, sizeof(struct ether_header));
1.104 matt 1000: #ifdef MBUFTRACE
1.108 itojun 1001: strlcpy(ec->ec_tx_mowner.mo_name, ifp->if_xname,
1002: sizeof(ec->ec_tx_mowner.mo_name));
1003: strlcpy(ec->ec_tx_mowner.mo_descr, "tx",
1004: sizeof(ec->ec_tx_mowner.mo_descr));
1005: strlcpy(ec->ec_rx_mowner.mo_name, ifp->if_xname,
1006: sizeof(ec->ec_rx_mowner.mo_name));
1007: strlcpy(ec->ec_rx_mowner.mo_descr, "rx",
1008: sizeof(ec->ec_rx_mowner.mo_descr));
1.104 matt 1009: MOWNER_ATTACH(&ec->ec_tx_mowner);
1010: MOWNER_ATTACH(&ec->ec_rx_mowner);
1011: ifp->if_mowner = &ec->ec_tx_mowner;
1012: #endif
1.52 thorpej 1013: }
1014:
1015: void
1.58 matt 1016: ether_ifdetach(struct ifnet *ifp)
1.52 thorpej 1017: {
1.63 thorpej 1018: struct ethercom *ec = (void *) ifp;
1019: struct ether_multi *enm;
1.69 thorpej 1020:
1.190 christos 1021: /*
1022: * Prevent further calls to ioctl (for example turning off
1023: * promiscuous mode from the bridge code), which eventually can
1024: * call if_init() which can cause panics because the interface
1025: * is in the process of being detached. Return device not configured
1026: * instead.
1027: */
1028: ifp->if_ioctl = (int (*)(struct ifnet *, u_long, void *))enxio;
1029:
1.115 dyoung 1030: #if NBRIDGE > 0
1031: if (ifp->if_bridge)
1032: bridge_ifdetach(ifp);
1033: #endif
1.177 joerg 1034: bpf_detach(ifp);
1.64 thorpej 1035: #if NVLAN > 0
1036: if (ec->ec_nvlans)
1037: vlan_ifdetach(ifp);
1038: #endif
1.63 thorpej 1039:
1.245 msaitoh 1040: ETHER_LOCK(ec);
1.63 thorpej 1041: while ((enm = LIST_FIRST(&ec->ec_multiaddrs)) != NULL) {
1042: LIST_REMOVE(enm, enm_list);
1.248 ozaki-r 1043: kmem_free(enm, sizeof(*enm));
1.63 thorpej 1044: ec->ec_multicnt--;
1045: }
1.245 msaitoh 1046: ETHER_UNLOCK(ec);
1.52 thorpej 1047:
1.252 maxv 1048: mutex_obj_free(ec->ec_lock);
1.253 maxv 1049: ec->ec_lock = NULL;
1.231 ozaki-r 1050:
1.189 chs 1051: ifp->if_mowner = NULL;
1.104 matt 1052: MOWNER_DETACH(&ec->ec_rx_mowner);
1053: MOWNER_DETACH(&ec->ec_tx_mowner);
1.53 thorpej 1054: }
1055:
1.56 thorpej 1056: #if 0
1057: /*
1058: * This is for reference. We have a table-driven version
1059: * of the little-endian crc32 generator, which is faster
1060: * than the double-loop.
1061: */
1.162 matt 1062: uint32_t
1063: ether_crc32_le(const uint8_t *buf, size_t len)
1.53 thorpej 1064: {
1.162 matt 1065: uint32_t c, crc, carry;
1.53 thorpej 1066: size_t i, j;
1067:
1068: crc = 0xffffffffU; /* initial value */
1069:
1070: for (i = 0; i < len; i++) {
1071: c = buf[i];
1072: for (j = 0; j < 8; j++) {
1073: carry = ((crc & 0x01) ? 1 : 0) ^ (c & 0x01);
1074: crc >>= 1;
1075: c >>= 1;
1076: if (carry)
1.56 thorpej 1077: crc = (crc ^ ETHER_CRC_POLY_LE);
1.53 thorpej 1078: }
1079: }
1080:
1081: return (crc);
1082: }
1.56 thorpej 1083: #else
1.162 matt 1084: uint32_t
1085: ether_crc32_le(const uint8_t *buf, size_t len)
1.56 thorpej 1086: {
1.162 matt 1087: static const uint32_t crctab[] = {
1.56 thorpej 1088: 0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac,
1089: 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c,
1090: 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c,
1091: 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c
1092: };
1.162 matt 1093: uint32_t crc;
1.98 thorpej 1094: size_t i;
1.56 thorpej 1095:
1096: crc = 0xffffffffU; /* initial value */
1097:
1098: for (i = 0; i < len; i++) {
1099: crc ^= buf[i];
1100: crc = (crc >> 4) ^ crctab[crc & 0xf];
1101: crc = (crc >> 4) ^ crctab[crc & 0xf];
1102: }
1103:
1104: return (crc);
1105: }
1106: #endif
1.53 thorpej 1107:
1.162 matt 1108: uint32_t
1109: ether_crc32_be(const uint8_t *buf, size_t len)
1.53 thorpej 1110: {
1.162 matt 1111: uint32_t c, crc, carry;
1.53 thorpej 1112: size_t i, j;
1113:
1114: crc = 0xffffffffU; /* initial value */
1115:
1116: for (i = 0; i < len; i++) {
1117: c = buf[i];
1118: for (j = 0; j < 8; j++) {
1119: carry = ((crc & 0x80000000U) ? 1 : 0) ^ (c & 0x01);
1120: crc <<= 1;
1121: c >>= 1;
1122: if (carry)
1123: crc = (crc ^ ETHER_CRC_POLY_BE) | carry;
1124: }
1125: }
1126:
1127: return (crc);
1.8 mycroft 1128: }
1129:
1.48 is 1130: #ifdef INET
1.118 yamt 1131: const uint8_t ether_ipmulticast_min[ETHER_ADDR_LEN] =
1132: { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
1133: const uint8_t ether_ipmulticast_max[ETHER_ADDR_LEN] =
1134: { 0x01, 0x00, 0x5e, 0x7f, 0xff, 0xff };
1.48 is 1135: #endif
1.44 itojun 1136: #ifdef INET6
1.118 yamt 1137: const uint8_t ether_ip6multicast_min[ETHER_ADDR_LEN] =
1138: { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
1139: const uint8_t ether_ip6multicast_max[ETHER_ADDR_LEN] =
1140: { 0x33, 0x33, 0xff, 0xff, 0xff, 0xff };
1.44 itojun 1141: #endif
1.60 enami 1142:
1.3 hpeyerl 1143: /*
1.138 rpaulo 1144: * ether_aton implementation, not using a static buffer.
1145: */
1146: int
1.180 christos 1147: ether_aton_r(u_char *dest, size_t len, const char *str)
1.138 rpaulo 1148: {
1.250 maxv 1149: const u_char *cp = (const void *)str;
1.180 christos 1150: u_char *ep;
1151:
1.185 tsutsui 1152: #define atox(c) (((c) <= '9') ? ((c) - '0') : ((toupper(c) - 'A') + 10))
1.180 christos 1153:
1154: if (len < ETHER_ADDR_LEN)
1155: return ENOSPC;
1156:
1157: ep = dest + ETHER_ADDR_LEN;
1.250 maxv 1158:
1.180 christos 1159: while (*cp) {
1.250 maxv 1160: if (!isxdigit(*cp))
1161: return EINVAL;
1.252 maxv 1162:
1.180 christos 1163: *dest = atox(*cp);
1164: cp++;
1.250 maxv 1165: if (isxdigit(*cp)) {
1166: *dest = (*dest << 4) | atox(*cp);
1.180 christos 1167: cp++;
1.250 maxv 1168: }
1.252 maxv 1169: dest++;
1170:
1.180 christos 1171: if (dest == ep)
1.252 maxv 1172: return (*cp == '\0') ? 0 : ENAMETOOLONG;
1173:
1.180 christos 1174: switch (*cp) {
1175: case ':':
1176: case '-':
1177: case '.':
1.179 jakllsch 1178: cp++;
1.180 christos 1179: break;
1.179 jakllsch 1180: }
1.250 maxv 1181: }
1.180 christos 1182: return ENOBUFS;
1.138 rpaulo 1183: }
1184:
1185: /*
1.60 enami 1186: * Convert a sockaddr into an Ethernet address or range of Ethernet
1187: * addresses.
1.3 hpeyerl 1188: */
1189: int
1.162 matt 1190: ether_multiaddr(const struct sockaddr *sa, uint8_t addrlo[ETHER_ADDR_LEN],
1191: uint8_t addrhi[ETHER_ADDR_LEN])
1.3 hpeyerl 1192: {
1.24 christos 1193: #ifdef INET
1.155 dyoung 1194: const struct sockaddr_in *sin;
1.24 christos 1195: #endif /* INET */
1.44 itojun 1196: #ifdef INET6
1.155 dyoung 1197: const struct sockaddr_in6 *sin6;
1.44 itojun 1198: #endif /* INET6 */
1.3 hpeyerl 1199:
1.60 enami 1200: switch (sa->sa_family) {
1.3 hpeyerl 1201:
1202: case AF_UNSPEC:
1.146 dyoung 1203: memcpy(addrlo, sa->sa_data, ETHER_ADDR_LEN);
1204: memcpy(addrhi, addrlo, ETHER_ADDR_LEN);
1.3 hpeyerl 1205: break;
1206:
1207: #ifdef INET
1208: case AF_INET:
1.155 dyoung 1209: sin = satocsin(sa);
1.3 hpeyerl 1210: if (sin->sin_addr.s_addr == INADDR_ANY) {
1211: /*
1.60 enami 1212: * An IP address of INADDR_ANY means listen to
1213: * or stop listening to all of the Ethernet
1214: * multicast addresses used for IP.
1.3 hpeyerl 1215: * (This is for the sake of IP multicast routers.)
1216: */
1.146 dyoung 1217: memcpy(addrlo, ether_ipmulticast_min, ETHER_ADDR_LEN);
1218: memcpy(addrhi, ether_ipmulticast_max, ETHER_ADDR_LEN);
1.252 maxv 1219: } else {
1.3 hpeyerl 1220: ETHER_MAP_IP_MULTICAST(&sin->sin_addr, addrlo);
1.146 dyoung 1221: memcpy(addrhi, addrlo, ETHER_ADDR_LEN);
1.3 hpeyerl 1222: }
1223: break;
1224: #endif
1.44 itojun 1225: #ifdef INET6
1226: case AF_INET6:
1.155 dyoung 1227: sin6 = satocsin6(sa);
1.47 itojun 1228: if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1.44 itojun 1229: /*
1.60 enami 1230: * An IP6 address of 0 means listen to or stop
1231: * listening to all of the Ethernet multicast
1232: * address used for IP6.
1.44 itojun 1233: * (This is used for multicast routers.)
1234: */
1.146 dyoung 1235: memcpy(addrlo, ether_ip6multicast_min, ETHER_ADDR_LEN);
1236: memcpy(addrhi, ether_ip6multicast_max, ETHER_ADDR_LEN);
1.44 itojun 1237: } else {
1238: ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, addrlo);
1.146 dyoung 1239: memcpy(addrhi, addrlo, ETHER_ADDR_LEN);
1.44 itojun 1240: }
1241: break;
1242: #endif
1.3 hpeyerl 1243:
1244: default:
1.146 dyoung 1245: return EAFNOSUPPORT;
1.60 enami 1246: }
1.146 dyoung 1247: return 0;
1.60 enami 1248: }
1249:
1250: /*
1251: * Add an Ethernet multicast address or range of addresses to the list for a
1252: * given interface.
1253: */
1254: int
1.155 dyoung 1255: ether_addmulti(const struct sockaddr *sa, struct ethercom *ec)
1.60 enami 1256: {
1.231 ozaki-r 1257: struct ether_multi *enm, *_enm;
1.60 enami 1258: u_char addrlo[ETHER_ADDR_LEN];
1259: u_char addrhi[ETHER_ADDR_LEN];
1.237 skrll 1260: int error = 0;
1.231 ozaki-r 1261:
1262: /* Allocate out of lock */
1.248 ozaki-r 1263: enm = kmem_alloc(sizeof(*enm), KM_SLEEP);
1.60 enami 1264:
1.245 msaitoh 1265: ETHER_LOCK(ec);
1.155 dyoung 1266: error = ether_multiaddr(sa, addrlo, addrhi);
1.231 ozaki-r 1267: if (error != 0)
1268: goto out;
1.3 hpeyerl 1269:
1270: /*
1271: * Verify that we have valid Ethernet multicast addresses.
1272: */
1.186 yamt 1273: if (!ETHER_IS_MULTICAST(addrlo) || !ETHER_IS_MULTICAST(addrhi)) {
1.231 ozaki-r 1274: error = EINVAL;
1275: goto out;
1.3 hpeyerl 1276: }
1.252 maxv 1277:
1.3 hpeyerl 1278: /*
1279: * See if the address range is already in the list.
1280: */
1.231 ozaki-r 1281: ETHER_LOOKUP_MULTI(addrlo, addrhi, ec, _enm);
1282: if (_enm != NULL) {
1.3 hpeyerl 1283: /*
1284: * Found it; just increment the reference count.
1285: */
1.231 ozaki-r 1286: ++_enm->enm_refcount;
1287: error = 0;
1288: goto out;
1.3 hpeyerl 1289: }
1.252 maxv 1290:
1.3 hpeyerl 1291: /*
1.239 ozaki-r 1292: * Link a new multicast record into the interface's multicast list.
1.3 hpeyerl 1293: */
1.252 maxv 1294: memcpy(enm->enm_addrlo, addrlo, ETHER_ADDR_LEN);
1295: memcpy(enm->enm_addrhi, addrhi, ETHER_ADDR_LEN);
1.3 hpeyerl 1296: enm->enm_refcount = 1;
1.22 is 1297: LIST_INSERT_HEAD(&ec->ec_multiaddrs, enm, enm_list);
1298: ec->ec_multicnt++;
1.252 maxv 1299:
1.3 hpeyerl 1300: /*
1301: * Return ENETRESET to inform the driver that the list has changed
1302: * and its reception filter should be adjusted accordingly.
1303: */
1.231 ozaki-r 1304: error = ENETRESET;
1305: enm = NULL;
1.252 maxv 1306:
1.231 ozaki-r 1307: out:
1.245 msaitoh 1308: ETHER_UNLOCK(ec);
1.231 ozaki-r 1309: if (enm != NULL)
1.248 ozaki-r 1310: kmem_free(enm, sizeof(*enm));
1.231 ozaki-r 1311: return error;
1.3 hpeyerl 1312: }
1313:
1314: /*
1315: * Delete a multicast address record.
1316: */
1317: int
1.155 dyoung 1318: ether_delmulti(const struct sockaddr *sa, struct ethercom *ec)
1.3 hpeyerl 1319: {
1.29 mrg 1320: struct ether_multi *enm;
1.60 enami 1321: u_char addrlo[ETHER_ADDR_LEN];
1322: u_char addrhi[ETHER_ADDR_LEN];
1.237 skrll 1323: int error;
1.3 hpeyerl 1324:
1.245 msaitoh 1325: ETHER_LOCK(ec);
1.155 dyoung 1326: error = ether_multiaddr(sa, addrlo, addrhi);
1.231 ozaki-r 1327: if (error != 0)
1328: goto error;
1.3 hpeyerl 1329:
1330: /*
1.252 maxv 1331: * Look up the address in our list.
1.3 hpeyerl 1332: */
1.22 is 1333: ETHER_LOOKUP_MULTI(addrlo, addrhi, ec, enm);
1.3 hpeyerl 1334: if (enm == NULL) {
1.231 ozaki-r 1335: error = ENXIO;
1336: goto error;
1.3 hpeyerl 1337: }
1338: if (--enm->enm_refcount != 0) {
1339: /*
1340: * Still some claims to this record.
1341: */
1.231 ozaki-r 1342: error = 0;
1343: goto error;
1.3 hpeyerl 1344: }
1.252 maxv 1345:
1.3 hpeyerl 1346: /*
1347: * No remaining claims to this record; unlink and free it.
1348: */
1.13 mycroft 1349: LIST_REMOVE(enm, enm_list);
1.22 is 1350: ec->ec_multicnt--;
1.245 msaitoh 1351: ETHER_UNLOCK(ec);
1.252 maxv 1352: kmem_free(enm, sizeof(*enm));
1.231 ozaki-r 1353:
1.3 hpeyerl 1354: /*
1355: * Return ENETRESET to inform the driver that the list has changed
1356: * and its reception filter should be adjusted accordingly.
1357: */
1.231 ozaki-r 1358: return ENETRESET;
1.252 maxv 1359:
1.231 ozaki-r 1360: error:
1.245 msaitoh 1361: ETHER_UNLOCK(ec);
1.231 ozaki-r 1362: return error;
1.66 thorpej 1363: }
1364:
1.170 dyoung 1365: void
1366: ether_set_ifflags_cb(struct ethercom *ec, ether_cb_t cb)
1367: {
1368: ec->ec_ifflags_cb = cb;
1369: }
1370:
1.66 thorpej 1371: /*
1372: * Common ioctls for Ethernet interfaces. Note, we must be
1373: * called at splnet().
1374: */
1375: int
1.147 christos 1376: ether_ioctl(struct ifnet *ifp, u_long cmd, void *data)
1.66 thorpej 1377: {
1378: struct ethercom *ec = (void *) ifp;
1.193 msaitoh 1379: struct eccapreq *eccr;
1.66 thorpej 1380: struct ifreq *ifr = (struct ifreq *)data;
1.170 dyoung 1381: struct if_laddrreq *iflr = data;
1382: const struct sockaddr_dl *sdl;
1383: static const uint8_t zero[ETHER_ADDR_LEN];
1.169 dyoung 1384: int error;
1.66 thorpej 1385:
1386: switch (cmd) {
1.170 dyoung 1387: case SIOCINITIFADDR:
1.191 matt 1388: {
1389: struct ifaddr *ifa = (struct ifaddr *)data;
1390: if (ifa->ifa_addr->sa_family != AF_LINK
1.247 msaitoh 1391: && (ifp->if_flags & (IFF_UP | IFF_RUNNING)) !=
1392: (IFF_UP | IFF_RUNNING)) {
1.170 dyoung 1393: ifp->if_flags |= IFF_UP;
1394: if ((error = (*ifp->if_init)(ifp)) != 0)
1395: return error;
1396: }
1.66 thorpej 1397: #ifdef INET
1.191 matt 1398: if (ifa->ifa_addr->sa_family == AF_INET)
1399: arp_ifinit(ifp, ifa);
1.252 maxv 1400: #endif
1.169 dyoung 1401: return 0;
1.191 matt 1402: }
1.66 thorpej 1403:
1404: case SIOCSIFMTU:
1.82 thorpej 1405: {
1406: int maxmtu;
1407:
1408: if (ec->ec_capabilities & ETHERCAP_JUMBO_MTU)
1409: maxmtu = ETHERMTU_JUMBO;
1410: else
1411: maxmtu = ETHERMTU;
1412:
1413: if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > maxmtu)
1.169 dyoung 1414: return EINVAL;
1415: else if ((error = ifioctl_common(ifp, cmd, data)) != ENETRESET)
1416: return error;
1417: else if (ifp->if_flags & IFF_UP) {
1.88 thorpej 1418: /* Make sure the device notices the MTU change. */
1.169 dyoung 1419: return (*ifp->if_init)(ifp);
1420: } else
1421: return 0;
1.82 thorpej 1422: }
1.66 thorpej 1423:
1424: case SIOCSIFFLAGS:
1.170 dyoung 1425: if ((error = ifioctl_common(ifp, cmd, data)) != 0)
1426: return error;
1.247 msaitoh 1427: switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) {
1.169 dyoung 1428: case IFF_RUNNING:
1.66 thorpej 1429: /*
1430: * If interface is marked down and it is running,
1431: * then stop and disable it.
1432: */
1433: (*ifp->if_stop)(ifp, 1);
1.169 dyoung 1434: break;
1435: case IFF_UP:
1.66 thorpej 1436: /*
1437: * If interface is marked up and it is stopped, then
1438: * start it.
1439: */
1.169 dyoung 1440: return (*ifp->if_init)(ifp);
1.247 msaitoh 1441: case IFF_UP | IFF_RUNNING:
1.170 dyoung 1442: error = 0;
1.247 msaitoh 1443: if (ec->ec_ifflags_cb != NULL) {
1444: error = (*ec->ec_ifflags_cb)(ec);
1445: if (error == ENETRESET) {
1446: /*
1447: * Reset the interface to pick up
1448: * changes in any other flags that
1449: * affect the hardware state.
1450: */
1451: return (*ifp->if_init)(ifp);
1452: }
1453: } else
1454: error = (*ifp->if_init)(ifp);
1455: return error;
1.169 dyoung 1456: case 0:
1457: break;
1.66 thorpej 1458: }
1.169 dyoung 1459: return 0;
1.193 msaitoh 1460: case SIOCGETHERCAP:
1461: eccr = (struct eccapreq *)data;
1462: eccr->eccr_capabilities = ec->ec_capabilities;
1463: eccr->eccr_capenable = ec->ec_capenable;
1464: return 0;
1.66 thorpej 1465: case SIOCADDMULTI:
1.169 dyoung 1466: return ether_addmulti(ifreq_getaddr(cmd, ifr), ec);
1.66 thorpej 1467: case SIOCDELMULTI:
1.169 dyoung 1468: return ether_delmulti(ifreq_getaddr(cmd, ifr), ec);
1.160 dyoung 1469: case SIOCSIFMEDIA:
1470: case SIOCGIFMEDIA:
1471: if (ec->ec_mii == NULL)
1.169 dyoung 1472: return ENOTTY;
1473: return ifmedia_ioctl(ifp, ifr, &ec->ec_mii->mii_media, cmd);
1.170 dyoung 1474: case SIOCALIFADDR:
1475: sdl = satocsdl(sstocsa(&iflr->addr));
1476: if (sdl->sdl_family != AF_LINK)
1477: ;
1478: else if (ETHER_IS_MULTICAST(CLLADDR(sdl)))
1479: return EINVAL;
1480: else if (memcmp(zero, CLLADDR(sdl), sizeof(zero)) == 0)
1481: return EINVAL;
1482: /*FALLTHROUGH*/
1483: default:
1.161 dyoung 1484: return ifioctl_common(ifp, cmd, data);
1.66 thorpej 1485: }
1.169 dyoung 1486: return 0;
1.3 hpeyerl 1487: }
1.200 joerg 1488:
1.215 christos 1489: /*
1490: * Enable/disable passing VLAN packets if the parent interface supports it.
1491: * Return:
1492: * 0: Ok
1493: * -1: Parent interface does not support vlans
1494: * >0: Error
1495: */
1496: int
1497: ether_enable_vlan_mtu(struct ifnet *ifp)
1498: {
1499: int error;
1500: struct ethercom *ec = (void *)ifp;
1501:
1502: /* Parent does not support VLAN's */
1503: if ((ec->ec_capabilities & ETHERCAP_VLAN_MTU) == 0)
1504: return -1;
1505:
1506: /*
1507: * Parent supports the VLAN_MTU capability,
1508: * i.e. can Tx/Rx larger than ETHER_MAX_LEN frames;
1509: * enable it.
1510: */
1511: ec->ec_capenable |= ETHERCAP_VLAN_MTU;
1512:
1513: /* Interface is down, defer for later */
1514: if ((ifp->if_flags & IFF_UP) == 0)
1515: return 0;
1516:
1517: if ((error = if_flags_set(ifp, ifp->if_flags)) == 0)
1518: return 0;
1519:
1520: ec->ec_capenable &= ~ETHERCAP_VLAN_MTU;
1521: return error;
1522: }
1523:
1524: int
1525: ether_disable_vlan_mtu(struct ifnet *ifp)
1526: {
1527: int error;
1528: struct ethercom *ec = (void *)ifp;
1529:
1530: /* We still have VLAN's, defer for later */
1531: if (ec->ec_nvlans != 0)
1532: return 0;
1533:
1534: /* Parent does not support VLAB's, nothing to do. */
1535: if ((ec->ec_capenable & ETHERCAP_VLAN_MTU) == 0)
1536: return -1;
1537:
1538: /*
1539: * Disable Tx/Rx of VLAN-sized frames.
1540: */
1541: ec->ec_capenable &= ~ETHERCAP_VLAN_MTU;
1.250 maxv 1542:
1.215 christos 1543: /* Interface is down, defer for later */
1544: if ((ifp->if_flags & IFF_UP) == 0)
1545: return 0;
1546:
1547: if ((error = if_flags_set(ifp, ifp->if_flags)) == 0)
1548: return 0;
1549:
1550: ec->ec_capenable |= ETHERCAP_VLAN_MTU;
1551: return error;
1552: }
1553:
1.200 joerg 1554: static int
1555: ether_multicast_sysctl(SYSCTLFN_ARGS)
1556: {
1557: struct ether_multi *enm;
1558: struct ifnet *ifp;
1559: struct ethercom *ec;
1.223 ozaki-r 1560: int error = 0;
1.200 joerg 1561: size_t written;
1.223 ozaki-r 1562: struct psref psref;
1.237 skrll 1563: int bound;
1.233 ozaki-r 1564: unsigned int multicnt;
1565: struct ether_multi_sysctl *addrs;
1566: int i;
1.200 joerg 1567:
1568: if (namelen != 1)
1569: return EINVAL;
1570:
1.223 ozaki-r 1571: bound = curlwp_bind();
1572: ifp = if_get_byindex(name[0], &psref);
1573: if (ifp == NULL) {
1574: error = ENODEV;
1575: goto out;
1576: }
1.200 joerg 1577: if (ifp->if_type != IFT_ETHER) {
1.223 ozaki-r 1578: if_put(ifp, &psref);
1.200 joerg 1579: *oldlenp = 0;
1.223 ozaki-r 1580: goto out;
1.200 joerg 1581: }
1582: ec = (struct ethercom *)ifp;
1583:
1584: if (oldp == NULL) {
1.223 ozaki-r 1585: if_put(ifp, &psref);
1.233 ozaki-r 1586: *oldlenp = ec->ec_multicnt * sizeof(*addrs);
1.223 ozaki-r 1587: goto out;
1.200 joerg 1588: }
1589:
1.233 ozaki-r 1590: /*
1591: * ec->ec_lock is a spin mutex so we cannot call sysctl_copyout, which
1.251 maxv 1592: * is sleepable, while holding it. Copy data to a local buffer first
1593: * with the lock taken and then call sysctl_copyout without holding it.
1.233 ozaki-r 1594: */
1595: retry:
1596: multicnt = ec->ec_multicnt;
1.251 maxv 1597:
1598: if (multicnt == 0) {
1599: if_put(ifp, &psref);
1600: *oldlenp = 0;
1601: goto out;
1602: }
1603:
1.252 maxv 1604: addrs = kmem_zalloc(sizeof(*addrs) * multicnt, KM_SLEEP);
1.200 joerg 1605:
1.245 msaitoh 1606: ETHER_LOCK(ec);
1.251 maxv 1607: if (multicnt != ec->ec_multicnt) {
1608: /* The number of multicast addresses has changed */
1.245 msaitoh 1609: ETHER_UNLOCK(ec);
1.233 ozaki-r 1610: kmem_free(addrs, sizeof(*addrs) * multicnt);
1611: goto retry;
1612: }
1613:
1614: i = 0;
1.200 joerg 1615: LIST_FOREACH(enm, &ec->ec_multiaddrs, enm_list) {
1.233 ozaki-r 1616: struct ether_multi_sysctl *addr = &addrs[i];
1617: addr->enm_refcount = enm->enm_refcount;
1618: memcpy(addr->enm_addrlo, enm->enm_addrlo, ETHER_ADDR_LEN);
1619: memcpy(addr->enm_addrhi, enm->enm_addrhi, ETHER_ADDR_LEN);
1620: i++;
1621: }
1.245 msaitoh 1622: ETHER_UNLOCK(ec);
1.233 ozaki-r 1623:
1624: error = 0;
1625: written = 0;
1626: for (i = 0; i < multicnt; i++) {
1627: struct ether_multi_sysctl *addr = &addrs[i];
1628:
1629: if (written + sizeof(*addr) > *oldlenp)
1.200 joerg 1630: break;
1.233 ozaki-r 1631: error = sysctl_copyout(l, addr, oldp, sizeof(*addr));
1.200 joerg 1632: if (error)
1633: break;
1.233 ozaki-r 1634: written += sizeof(*addr);
1635: oldp = (char *)oldp + sizeof(*addr);
1.200 joerg 1636: }
1.233 ozaki-r 1637: kmem_free(addrs, sizeof(*addrs) * multicnt);
1638:
1.223 ozaki-r 1639: if_put(ifp, &psref);
1.200 joerg 1640:
1641: *oldlenp = written;
1.223 ozaki-r 1642: out:
1643: curlwp_bindx(bound);
1.200 joerg 1644: return error;
1645: }
1646:
1.234 ozaki-r 1647: static void
1648: ether_sysctl_setup(struct sysctllog **clog)
1.200 joerg 1649: {
1650: const struct sysctlnode *rnode = NULL;
1651:
1652: sysctl_createv(clog, 0, NULL, &rnode,
1653: CTLFLAG_PERMANENT,
1654: CTLTYPE_NODE, "ether",
1655: SYSCTL_DESCR("Ethernet-specific information"),
1656: NULL, 0, NULL, 0,
1657: CTL_NET, CTL_CREATE, CTL_EOL);
1658:
1659: sysctl_createv(clog, 0, &rnode, NULL,
1660: CTLFLAG_PERMANENT,
1661: CTLTYPE_NODE, "multicast",
1662: SYSCTL_DESCR("multicast addresses"),
1663: ether_multicast_sysctl, 0, NULL, 0,
1664: CTL_CREATE, CTL_EOL);
1665: }
1.203 ozaki-r 1666:
1667: void
1668: etherinit(void)
1669: {
1.234 ozaki-r 1670:
1.203 ozaki-r 1671: mutex_init(&bigpktpps_lock, MUTEX_DEFAULT, IPL_NET);
1.234 ozaki-r 1672: ether_sysctl_setup(NULL);
1.203 ozaki-r 1673: }
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