kernel - MPSAFE work - tokenize more vm stuff
[dragonfly.git] / sys / net / if.c
CommitLineData
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1/*
2 * Copyright (c) 1980, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)if.c 8.3 (Berkeley) 1/4/94
f23061d4 34 * $FreeBSD: src/sys/net/if.c,v 1.185 2004/03/13 02:35:03 brooks Exp $
2a3e1dbd 35 * $DragonFly: src/sys/net/if.c,v 1.84 2008/11/15 11:58:16 sephe Exp $
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36 */
37
38#include "opt_compat.h"
39#include "opt_inet6.h"
40#include "opt_inet.h"
2b71c8f1 41#include "opt_polling.h"
b3a7093f 42#include "opt_ifpoll.h"
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43
44#include <sys/param.h>
45#include <sys/malloc.h>
46#include <sys/mbuf.h>
47#include <sys/systm.h>
48#include <sys/proc.h>
895c1f85 49#include <sys/priv.h>
6b6e0885 50#include <sys/protosw.h>
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51#include <sys/socket.h>
52#include <sys/socketvar.h>
6b6e0885 53#include <sys/socketops.h>
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54#include <sys/protosw.h>
55#include <sys/kernel.h>
9db4b353 56#include <sys/ktr.h>
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57#include <sys/sockio.h>
58#include <sys/syslog.h>
59#include <sys/sysctl.h>
698ac46c 60#include <sys/domain.h>
e9cb6d99 61#include <sys/thread.h>
65a24520 62#include <sys/thread2.h>
78195a76 63#include <sys/serialize.h>
b2632176 64#include <sys/msgport2.h>
71fc104f 65#include <sys/bus.h>
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66
67#include <net/if.h>
68#include <net/if_arp.h>
69#include <net/if_dl.h>
70#include <net/if_types.h>
71#include <net/if_var.h>
4d723e5a 72#include <net/ifq_var.h>
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73#include <net/radix.h>
74#include <net/route.h>
65a24520 75#include <net/if_clone.h>
9db4b353 76#include <net/netisr.h>
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77#include <net/netmsg2.h>
78
d5a2b87c 79#include <machine/atomic.h>
984263bc 80#include <machine/stdarg.h>
b2632176 81#include <machine/smp.h>
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82
83#if defined(INET) || defined(INET6)
84/*XXX*/
85#include <netinet/in.h>
86#include <netinet/in_var.h>
87#include <netinet/if_ether.h>
88#ifdef INET6
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89#include <netinet6/in6_var.h>
90#include <netinet6/in6_ifattach.h>
91#endif
92#endif
93
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94#if defined(COMPAT_43)
95#include <emulation/43bsd/43bsd_socket.h>
96#endif /* COMPAT_43 */
97
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98struct netmsg_ifaddr {
99 struct netmsg netmsg;
100 struct ifaddr *ifa;
101 struct ifnet *ifp;
102 int tail;
103};
104
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105/*
106 * System initialization
107 */
698ac46c
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108static void if_attachdomain(void *);
109static void if_attachdomain1(struct ifnet *);
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110static int ifconf(u_long, caddr_t, struct ucred *);
111static void ifinit(void *);
90af4fd3 112static void ifnetinit(void *);
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113static void if_slowtimo(void *);
114static void link_rtrequest(int, struct rtentry *, struct rt_addrinfo *);
115static int if_rtdel(struct radix_node *, void *);
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116
117#ifdef INET6
118/*
119 * XXX: declare here to avoid to include many inet6 related files..
120 * should be more generalized?
121 */
436c57ea 122extern void nd6_setmtu(struct ifnet *);
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123#endif
124
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125SYSCTL_NODE(_net, PF_LINK, link, CTLFLAG_RW, 0, "Link layers");
126SYSCTL_NODE(_net_link, 0, generic, CTLFLAG_RW, 0, "Generic link-management");
127
128SYSINIT(interfaces, SI_SUB_PROTO_IF, SI_ORDER_FIRST, ifinit, NULL)
b2632176 129/* Must be after netisr_init */
90af4fd3 130SYSINIT(ifnet, SI_SUB_PRE_DRIVERS, SI_ORDER_SECOND, ifnetinit, NULL)
436c57ea 131
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132static if_com_alloc_t *if_com_alloc[256];
133static if_com_free_t *if_com_free[256];
134
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135MALLOC_DEFINE(M_IFADDR, "ifaddr", "interface address");
136MALLOC_DEFINE(M_IFMADDR, "ether_multi", "link-level multicast address");
cb80735c 137MALLOC_DEFINE(M_IFNET, "ifnet", "interface structure");
984263bc 138
436c57ea 139int ifqmaxlen = IFQ_MAXLEN;
b64bfcc3 140struct ifnethead ifnet = TAILQ_HEAD_INITIALIZER(ifnet);
984263bc 141
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142/* In ifq_dispatch(), try to do direct ifnet.if_start first */
143static int ifq_dispatch_schedonly = 0;
144SYSCTL_INT(_net_link_generic, OID_AUTO, ifq_dispatch_schedonly, CTLFLAG_RW,
145 &ifq_dispatch_schedonly, 0, "");
146
147/* In ifq_dispatch(), schedule ifnet.if_start without checking ifnet.if_snd */
148static int ifq_dispatch_schednochk = 0;
149SYSCTL_INT(_net_link_generic, OID_AUTO, ifq_dispatch_schednochk, CTLFLAG_RW,
150 &ifq_dispatch_schednochk, 0, "");
151
152/* In if_devstart(), try to do direct ifnet.if_start first */
153static int if_devstart_schedonly = 0;
154SYSCTL_INT(_net_link_generic, OID_AUTO, if_devstart_schedonly, CTLFLAG_RW,
155 &if_devstart_schedonly, 0, "");
156
157/* In if_devstart(), schedule ifnet.if_start without checking ifnet.if_snd */
158static int if_devstart_schednochk = 0;
159SYSCTL_INT(_net_link_generic, OID_AUTO, if_devstart_schednochk, CTLFLAG_RW,
160 &if_devstart_schednochk, 0, "");
161
162#ifdef SMP
163/* Schedule ifnet.if_start on the current CPU */
164static int if_start_oncpu_sched = 0;
165SYSCTL_INT(_net_link_generic, OID_AUTO, if_start_oncpu_sched, CTLFLAG_RW,
166 &if_start_oncpu_sched, 0, "");
167#endif
168
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169struct callout if_slowtimo_timer;
170
171int if_index = 0;
172struct ifnet **ifindex2ifnet = NULL;
90af4fd3 173static struct thread ifnet_threads[MAXCPU];
92db3805 174static int ifnet_mpsafe_thread = NETMSG_SERVICE_MPSAFE;
abbb44bb 175
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176#define IFQ_KTR_STRING "ifq=%p"
177#define IFQ_KTR_ARG_SIZE (sizeof(void *))
178#ifndef KTR_IFQ
179#define KTR_IFQ KTR_ALL
180#endif
181KTR_INFO_MASTER(ifq);
182KTR_INFO(KTR_IFQ, ifq, enqueue, 0, IFQ_KTR_STRING, IFQ_KTR_ARG_SIZE);
183KTR_INFO(KTR_IFQ, ifq, dequeue, 1, IFQ_KTR_STRING, IFQ_KTR_ARG_SIZE);
184#define logifq(name, arg) KTR_LOG(ifq_ ## name, arg)
185
186#define IF_START_KTR_STRING "ifp=%p"
187#define IF_START_KTR_ARG_SIZE (sizeof(void *))
188#ifndef KTR_IF_START
189#define KTR_IF_START KTR_ALL
190#endif
191KTR_INFO_MASTER(if_start);
192KTR_INFO(KTR_IF_START, if_start, run, 0,
193 IF_START_KTR_STRING, IF_START_KTR_ARG_SIZE);
194KTR_INFO(KTR_IF_START, if_start, sched, 1,
195 IF_START_KTR_STRING, IF_START_KTR_ARG_SIZE);
196KTR_INFO(KTR_IF_START, if_start, avoid, 2,
197 IF_START_KTR_STRING, IF_START_KTR_ARG_SIZE);
198KTR_INFO(KTR_IF_START, if_start, contend_sched, 3,
199 IF_START_KTR_STRING, IF_START_KTR_ARG_SIZE);
0d1d845c 200#ifdef SMP
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201KTR_INFO(KTR_IF_START, if_start, chase_sched, 4,
202 IF_START_KTR_STRING, IF_START_KTR_ARG_SIZE);
0d1d845c 203#endif
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204#define logifstart(name, arg) KTR_LOG(if_start_ ## name, arg)
205
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206/*
207 * Network interface utility routines.
208 *
209 * Routines with ifa_ifwith* names take sockaddr *'s as
210 * parameters.
211 */
212/* ARGSUSED*/
213void
f23061d4 214ifinit(void *dummy)
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215{
216 struct ifnet *ifp;
984263bc 217
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218 callout_init(&if_slowtimo_timer);
219
4986965b 220 crit_enter();
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221 TAILQ_FOREACH(ifp, &ifnet, if_link) {
222 if (ifp->if_snd.ifq_maxlen == 0) {
3e4a09e7 223 if_printf(ifp, "XXX: driver didn't set ifq_maxlen\n");
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224 ifp->if_snd.ifq_maxlen = ifqmaxlen;
225 }
226 }
4986965b 227 crit_exit();
abbb44bb 228
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229 if_slowtimo(0);
230}
231
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232static int
233if_start_cpuid(struct ifnet *ifp)
234{
235 return ifp->if_cpuid;
236}
237
238#ifdef DEVICE_POLLING
239static int
240if_start_cpuid_poll(struct ifnet *ifp)
241{
242 int poll_cpuid = ifp->if_poll_cpuid;
243
244 if (poll_cpuid >= 0)
245 return poll_cpuid;
246 else
247 return ifp->if_cpuid;
248}
249#endif
250
251static void
252if_start_ipifunc(void *arg)
253{
254 struct ifnet *ifp = arg;
255 struct lwkt_msg *lmsg = &ifp->if_start_nmsg[mycpuid].nm_lmsg;
256
257 crit_enter();
258 if (lmsg->ms_flags & MSGF_DONE)
d7944f0b 259 lwkt_sendmsg(ifnet_portfn(mycpuid), lmsg);
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260 crit_exit();
261}
262
263/*
264 * Schedule ifnet.if_start on ifnet's CPU
265 */
266static void
267if_start_schedule(struct ifnet *ifp)
268{
269#ifdef SMP
270 int cpu;
271
272 if (if_start_oncpu_sched)
273 cpu = mycpuid;
274 else
275 cpu = ifp->if_start_cpuid(ifp);
276
277 if (cpu != mycpuid)
278 lwkt_send_ipiq(globaldata_find(cpu), if_start_ipifunc, ifp);
279 else
280#endif
281 if_start_ipifunc(ifp);
282}
283
284/*
285 * NOTE:
286 * This function will release ifnet.if_start interlock,
287 * if ifnet.if_start does not need to be scheduled
288 */
289static __inline int
290if_start_need_schedule(struct ifaltq *ifq, int running)
291{
292 if (!running || ifq_is_empty(ifq)
293#ifdef ALTQ
294 || ifq->altq_tbr != NULL
295#endif
296 ) {
297 ALTQ_LOCK(ifq);
298 /*
299 * ifnet.if_start interlock is released, if:
300 * 1) Hardware can not take any packets, due to
301 * o interface is marked down
302 * o hardware queue is full (IFF_OACTIVE)
303 * Under the second situation, hardware interrupt
304 * or polling(4) will call/schedule ifnet.if_start
305 * when hardware queue is ready
306 * 2) There is not packet in the ifnet.if_snd.
307 * Further ifq_dispatch or ifq_handoff will call/
308 * schedule ifnet.if_start
309 * 3) TBR is used and it does not allow further
310 * dequeueing.
311 * TBR callout will call ifnet.if_start
312 */
313 if (!running || !ifq_data_ready(ifq)) {
314 ifq->altq_started = 0;
315 ALTQ_UNLOCK(ifq);
316 return 0;
317 }
318 ALTQ_UNLOCK(ifq);
319 }
320 return 1;
321}
322
323static void
324if_start_dispatch(struct netmsg *nmsg)
325{
326 struct lwkt_msg *lmsg = &nmsg->nm_lmsg;
327 struct ifnet *ifp = lmsg->u.ms_resultp;
328 struct ifaltq *ifq = &ifp->if_snd;
329 int running = 0;
330
331 crit_enter();
332 lwkt_replymsg(lmsg, 0); /* reply ASAP */
333 crit_exit();
334
335#ifdef SMP
336 if (!if_start_oncpu_sched && mycpuid != ifp->if_start_cpuid(ifp)) {
337 /*
338 * If the ifnet is still up, we need to
339 * chase its CPU change.
340 */
341 if (ifp->if_flags & IFF_UP) {
342 logifstart(chase_sched, ifp);
343 if_start_schedule(ifp);
344 return;
345 } else {
346 goto check;
347 }
348 }
349#endif
350
351 if (ifp->if_flags & IFF_UP) {
a3dd34d2 352 ifnet_serialize_tx(ifp); /* XXX try? */
9db4b353
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353 if ((ifp->if_flags & IFF_OACTIVE) == 0) {
354 logifstart(run, ifp);
355 ifp->if_start(ifp);
356 if ((ifp->if_flags &
357 (IFF_OACTIVE | IFF_RUNNING)) == IFF_RUNNING)
358 running = 1;
359 }
a3dd34d2 360 ifnet_deserialize_tx(ifp);
9db4b353 361 }
f21578c4 362#ifdef SMP
9db4b353 363check:
f21578c4 364#endif
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365 if (if_start_need_schedule(ifq, running)) {
366 crit_enter();
367 if (lmsg->ms_flags & MSGF_DONE) { /* XXX necessary? */
368 logifstart(sched, ifp);
d7944f0b 369 lwkt_sendmsg(ifnet_portfn(mycpuid), lmsg);
9db4b353
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370 }
371 crit_exit();
372 }
373}
374
375/* Device driver ifnet.if_start helper function */
376void
377if_devstart(struct ifnet *ifp)
378{
379 struct ifaltq *ifq = &ifp->if_snd;
380 int running = 0;
381
2c9effcf 382 ASSERT_IFNET_SERIALIZED_TX(ifp);
9db4b353
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383
384 ALTQ_LOCK(ifq);
385 if (ifq->altq_started || !ifq_data_ready(ifq)) {
386 logifstart(avoid, ifp);
387 ALTQ_UNLOCK(ifq);
388 return;
389 }
390 ifq->altq_started = 1;
391 ALTQ_UNLOCK(ifq);
392
393 if (if_devstart_schedonly) {
394 /*
395 * Always schedule ifnet.if_start on ifnet's CPU,
396 * short circuit the rest of this function.
397 */
398 logifstart(sched, ifp);
399 if_start_schedule(ifp);
400 return;
401 }
402
403 logifstart(run, ifp);
404 ifp->if_start(ifp);
405
406 if ((ifp->if_flags & (IFF_OACTIVE | IFF_RUNNING)) == IFF_RUNNING)
407 running = 1;
408
409 if (if_devstart_schednochk || if_start_need_schedule(ifq, running)) {
410 /*
411 * More data need to be transmitted, ifnet.if_start is
412 * scheduled on ifnet's CPU, and we keep going.
413 * NOTE: ifnet.if_start interlock is not released.
414 */
415 logifstart(sched, ifp);
416 if_start_schedule(ifp);
417 }
418}
419
a3dd34d2
SZ
420static void
421if_default_serialize(struct ifnet *ifp, enum ifnet_serialize slz __unused)
422{
423 lwkt_serialize_enter(ifp->if_serializer);
424}
425
426static void
427if_default_deserialize(struct ifnet *ifp, enum ifnet_serialize slz __unused)
428{
429 lwkt_serialize_exit(ifp->if_serializer);
430}
431
432static int
433if_default_tryserialize(struct ifnet *ifp, enum ifnet_serialize slz __unused)
434{
435 return lwkt_serialize_try(ifp->if_serializer);
436}
437
2c9effcf
SZ
438#ifdef INVARIANTS
439static void
440if_default_serialize_assert(struct ifnet *ifp,
441 enum ifnet_serialize slz __unused,
442 boolean_t serialized)
443{
444 if (serialized)
445 ASSERT_SERIALIZED(ifp->if_serializer);
446 else
447 ASSERT_NOT_SERIALIZED(ifp->if_serializer);
448}
449#endif
450
984263bc 451/*
78195a76
MD
452 * Attach an interface to the list of "active" interfaces.
453 *
454 * The serializer is optional. If non-NULL access to the interface
455 * may be MPSAFE.
984263bc
MD
456 */
457void
78195a76 458if_attach(struct ifnet *ifp, lwkt_serialize_t serializer)
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MD
459{
460 unsigned socksize, ifasize;
461 int namelen, masklen;
82ed7fc2
RG
462 struct sockaddr_dl *sdl;
463 struct ifaddr *ifa;
e3e4574a 464 struct ifaltq *ifq;
b2632176 465 int i;
590b8cd4 466
984263bc 467 static int if_indexlim = 8;
984263bc 468
a3dd34d2
SZ
469 if (ifp->if_serialize != NULL) {
470 KASSERT(ifp->if_deserialize != NULL &&
2c9effcf
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471 ifp->if_tryserialize != NULL &&
472 ifp->if_serialize_assert != NULL,
a3dd34d2 473 ("serialize functions are partially setup\n"));
ae474cfa
SZ
474
475 /*
476 * If the device supplies serialize functions,
477 * then clear if_serializer to catch any invalid
478 * usage of this field.
479 */
480 KASSERT(serializer == NULL,
481 ("both serialize functions and default serializer "
482 "are supplied\n"));
483 ifp->if_serializer = NULL;
a3dd34d2
SZ
484 } else {
485 KASSERT(ifp->if_deserialize == NULL &&
2c9effcf
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486 ifp->if_tryserialize == NULL &&
487 ifp->if_serialize_assert == NULL,
a3dd34d2
SZ
488 ("serialize functions are partially setup\n"));
489 ifp->if_serialize = if_default_serialize;
490 ifp->if_deserialize = if_default_deserialize;
491 ifp->if_tryserialize = if_default_tryserialize;
2c9effcf
SZ
492#ifdef INVARIANTS
493 ifp->if_serialize_assert = if_default_serialize_assert;
494#endif
ae474cfa
SZ
495
496 /*
497 * The serializer can be passed in from the device,
498 * allowing the same serializer to be used for both
499 * the interrupt interlock and the device queue.
500 * If not specified, the netif structure will use an
501 * embedded serializer.
502 */
503 if (serializer == NULL) {
504 serializer = &ifp->if_default_serializer;
505 lwkt_serialize_init(serializer);
506 }
507 ifp->if_serializer = serializer;
a3dd34d2
SZ
508 }
509
9db4b353
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510 ifp->if_start_cpuid = if_start_cpuid;
511 ifp->if_cpuid = 0;
512
1630efc5
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513#ifdef DEVICE_POLLING
514 /* Device is not in polling mode by default */
515 ifp->if_poll_cpuid = -1;
9db4b353
SZ
516 if (ifp->if_poll != NULL)
517 ifp->if_start_cpuid = if_start_cpuid_poll;
1630efc5
SZ
518#endif
519
9db4b353 520 ifp->if_start_nmsg = kmalloc(ncpus * sizeof(struct netmsg),
a71cbd17 521 M_LWKTMSG, M_WAITOK);
9db4b353 522 for (i = 0; i < ncpus; ++i) {
48e7b118
MD
523 netmsg_init(&ifp->if_start_nmsg[i], NULL, &netisr_adone_rport,
524 0, if_start_dispatch);
9db4b353
SZ
525 ifp->if_start_nmsg[i].nm_lmsg.u.ms_resultp = ifp;
526 }
527
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MD
528 TAILQ_INSERT_TAIL(&ifnet, ifp, if_link);
529 ifp->if_index = ++if_index;
b2632176 530
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531 /*
532 * XXX -
533 * The old code would work if the interface passed a pre-existing
534 * chain of ifaddrs to this code. We don't trust our callers to
535 * properly initialize the tailq, however, so we no longer allow
536 * this unlikely case.
537 */
b2632176
SZ
538 ifp->if_addrheads = kmalloc(ncpus * sizeof(struct ifaddrhead),
539 M_IFADDR, M_WAITOK | M_ZERO);
540 for (i = 0; i < ncpus; ++i)
541 TAILQ_INIT(&ifp->if_addrheads[i]);
542
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MD
543 TAILQ_INIT(&ifp->if_prefixhead);
544 LIST_INIT(&ifp->if_multiaddrs);
545 getmicrotime(&ifp->if_lastchange);
141697b6 546 if (ifindex2ifnet == NULL || if_index >= if_indexlim) {
590b8cd4 547 unsigned int n;
141697b6 548 struct ifnet **q;
590b8cd4
JH
549
550 if_indexlim <<= 1;
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MD
551
552 /* grow ifindex2ifnet */
141697b6 553 n = if_indexlim * sizeof(*q);
efda3bd0 554 q = kmalloc(n, M_IFADDR, M_WAITOK | M_ZERO);
984263bc 555 if (ifindex2ifnet) {
f23061d4 556 bcopy(ifindex2ifnet, q, n/2);
efda3bd0 557 kfree(ifindex2ifnet, M_IFADDR);
984263bc 558 }
141697b6 559 ifindex2ifnet = q;
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MD
560 }
561
562 ifindex2ifnet[if_index] = ifp;
563
564 /*
565 * create a Link Level name for this device
566 */
3e4a09e7 567 namelen = strlen(ifp->if_xname);
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568#define _offsetof(t, m) ((int)((caddr_t)&((t *)0)->m))
569 masklen = _offsetof(struct sockaddr_dl, sdl_data[0]) + namelen;
570 socksize = masklen + ifp->if_addrlen;
571#define ROUNDUP(a) (1 + (((a) - 1) | (sizeof(long) - 1)))
572 if (socksize < sizeof(*sdl))
573 socksize = sizeof(*sdl);
574 socksize = ROUNDUP(socksize);
590b8cd4 575 ifasize = sizeof(struct ifaddr) + 2 * socksize;
b2632176 576 ifa = ifa_create(ifasize, M_WAITOK);
590b8cd4
JH
577 sdl = (struct sockaddr_dl *)(ifa + 1);
578 sdl->sdl_len = socksize;
579 sdl->sdl_family = AF_LINK;
580 bcopy(ifp->if_xname, sdl->sdl_data, namelen);
581 sdl->sdl_nlen = namelen;
582 sdl->sdl_index = ifp->if_index;
583 sdl->sdl_type = ifp->if_type;
141697b6 584 ifp->if_lladdr = ifa;
590b8cd4
JH
585 ifa->ifa_ifp = ifp;
586 ifa->ifa_rtrequest = link_rtrequest;
587 ifa->ifa_addr = (struct sockaddr *)sdl;
588 sdl = (struct sockaddr_dl *)(socksize + (caddr_t)sdl);
589 ifa->ifa_netmask = (struct sockaddr *)sdl;
590 sdl->sdl_len = masklen;
591 while (namelen != 0)
592 sdl->sdl_data[--namelen] = 0xff;
b2632176 593 ifa_iflink(ifa, ifp, 0 /* Insert head */);
984263bc 594
f2bd8b67 595 EVENTHANDLER_INVOKE(ifnet_attach_event, ifp);
71fc104f 596 devctl_notify("IFNET", ifp->if_xname, "ATTACH", NULL);
f2bd8b67 597
e3e4574a
JS
598 ifq = &ifp->if_snd;
599 ifq->altq_type = 0;
600 ifq->altq_disc = NULL;
601 ifq->altq_flags &= ALTQF_CANTCHANGE;
602 ifq->altq_tbr = NULL;
603 ifq->altq_ifp = ifp;
9db4b353
SZ
604 ifq->altq_started = 0;
605 ifq->altq_prepended = NULL;
606 ALTQ_LOCK_INIT(ifq);
b2f93efe 607 ifq_set_classic(ifq);
4d723e5a 608
9c70fe43 609 if (!SLIST_EMPTY(&domains))
698ac46c
HS
610 if_attachdomain1(ifp);
611
984263bc
MD
612 /* Announce the interface. */
613 rt_ifannouncemsg(ifp, IFAN_ARRIVAL);
614}
615
698ac46c
HS
616static void
617if_attachdomain(void *dummy)
618{
619 struct ifnet *ifp;
698ac46c 620
4986965b
JS
621 crit_enter();
622 TAILQ_FOREACH(ifp, &ifnet, if_list)
698ac46c 623 if_attachdomain1(ifp);
4986965b 624 crit_exit();
698ac46c
HS
625}
626SYSINIT(domainifattach, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_FIRST,
627 if_attachdomain, NULL);
628
629static void
630if_attachdomain1(struct ifnet *ifp)
631{
632 struct domain *dp;
698ac46c 633
4986965b 634 crit_enter();
698ac46c
HS
635
636 /* address family dependent data region */
637 bzero(ifp->if_afdata, sizeof(ifp->if_afdata));
9c70fe43 638 SLIST_FOREACH(dp, &domains, dom_next)
698ac46c
HS
639 if (dp->dom_ifattach)
640 ifp->if_afdata[dp->dom_family] =
641 (*dp->dom_ifattach)(ifp);
4986965b 642 crit_exit();
698ac46c
HS
643}
644
c727e142
SZ
645/*
646 * Purge all addresses whose type is _not_ AF_LINK
647 */
648void
649if_purgeaddrs_nolink(struct ifnet *ifp)
650{
b2632176
SZ
651 struct ifaddr_container *ifac, *next;
652
653 TAILQ_FOREACH_MUTABLE(ifac, &ifp->if_addrheads[mycpuid],
654 ifa_link, next) {
655 struct ifaddr *ifa = ifac->ifa;
c727e142 656
c727e142
SZ
657 /* Leave link ifaddr as it is */
658 if (ifa->ifa_addr->sa_family == AF_LINK)
659 continue;
660#ifdef INET
661 /* XXX: Ugly!! ad hoc just for INET */
662 if (ifa->ifa_addr && ifa->ifa_addr->sa_family == AF_INET) {
663 struct ifaliasreq ifr;
b2632176
SZ
664#ifdef IFADDR_DEBUG_VERBOSE
665 int i;
666
667 kprintf("purge in4 addr %p: ", ifa);
668 for (i = 0; i < ncpus; ++i)
669 kprintf("%d ", ifa->ifa_containers[i].ifa_refcnt);
670 kprintf("\n");
671#endif
c727e142
SZ
672
673 bzero(&ifr, sizeof ifr);
674 ifr.ifra_addr = *ifa->ifa_addr;
675 if (ifa->ifa_dstaddr)
676 ifr.ifra_broadaddr = *ifa->ifa_dstaddr;
677 if (in_control(NULL, SIOCDIFADDR, (caddr_t)&ifr, ifp,
678 NULL) == 0)
679 continue;
680 }
681#endif /* INET */
682#ifdef INET6
683 if (ifa->ifa_addr && ifa->ifa_addr->sa_family == AF_INET6) {
b2632176
SZ
684#ifdef IFADDR_DEBUG_VERBOSE
685 int i;
686
687 kprintf("purge in6 addr %p: ", ifa);
688 for (i = 0; i < ncpus; ++i)
689 kprintf("%d ", ifa->ifa_containers[i].ifa_refcnt);
690 kprintf("\n");
691#endif
692
c727e142
SZ
693 in6_purgeaddr(ifa);
694 /* ifp_addrhead is already updated */
695 continue;
696 }
697#endif /* INET6 */
b2632176
SZ
698 ifa_ifunlink(ifa, ifp);
699 ifa_destroy(ifa);
c727e142
SZ
700 }
701}
702
984263bc
MD
703/*
704 * Detach an interface, removing it from the
705 * list of "active" interfaces.
706 */
707void
f23061d4 708if_detach(struct ifnet *ifp)
984263bc 709{
984263bc 710 struct radix_node_head *rnh;
984263bc 711 int i;
ecdefdda 712 int cpu, origcpu;
698ac46c 713 struct domain *dp;
984263bc 714
f2bd8b67
JS
715 EVENTHANDLER_INVOKE(ifnet_detach_event, ifp);
716
984263bc
MD
717 /*
718 * Remove routes and flush queues.
719 */
4986965b 720 crit_enter();
323f031d 721#ifdef DEVICE_POLLING
9c095379
MD
722 if (ifp->if_flags & IFF_POLLING)
723 ether_poll_deregister(ifp);
b3a7093f
SZ
724#endif
725#ifdef IFPOLL_ENABLE
726 if (ifp->if_flags & IFF_NPOLLING)
727 ifpoll_deregister(ifp);
323f031d 728#endif
984263bc
MD
729 if_down(ifp);
730
4d723e5a
JS
731 if (ifq_is_enabled(&ifp->if_snd))
732 altq_disable(&ifp->if_snd);
733 if (ifq_is_attached(&ifp->if_snd))
734 altq_detach(&ifp->if_snd);
735
984263bc 736 /*
984263bc
MD
737 * Clean up all addresses.
738 */
141697b6 739 ifp->if_lladdr = NULL;
984263bc 740
c727e142 741 if_purgeaddrs_nolink(ifp);
b2632176 742 if (!TAILQ_EMPTY(&ifp->if_addrheads[mycpuid])) {
c727e142
SZ
743 struct ifaddr *ifa;
744
b2632176 745 ifa = TAILQ_FIRST(&ifp->if_addrheads[mycpuid])->ifa;
c727e142 746 KASSERT(ifa->ifa_addr->sa_family == AF_LINK,
27eaa4f1 747 ("non-link ifaddr is left on if_addrheads"));
984263bc 748
b2632176
SZ
749 ifa_ifunlink(ifa, ifp);
750 ifa_destroy(ifa);
751 KASSERT(TAILQ_EMPTY(&ifp->if_addrheads[mycpuid]),
27eaa4f1 752 ("there are still ifaddrs left on if_addrheads"));
984263bc
MD
753 }
754
a98eb818
JS
755#ifdef INET
756 /*
757 * Remove all IPv4 kernel structures related to ifp.
758 */
759 in_ifdetach(ifp);
760#endif
761
984263bc
MD
762#ifdef INET6
763 /*
764 * Remove all IPv6 kernel structs related to ifp. This should be done
765 * before removing routing entries below, since IPv6 interface direct
766 * routes are expected to be removed by the IPv6-specific kernel API.
767 * Otherwise, the kernel will detect some inconsistency and bark it.
768 */
769 in6_ifdetach(ifp);
770#endif
771
772 /*
773 * Delete all remaining routes using this interface
774 * Unfortuneatly the only way to do this is to slog through
775 * the entire routing table looking for routes which point
776 * to this interface...oh well...
777 */
ecdefdda
MD
778 origcpu = mycpuid;
779 for (cpu = 0; cpu < ncpus2; cpu++) {
780 lwkt_migratecpu(cpu);
781 for (i = 1; i <= AF_MAX; i++) {
b2632176 782 if ((rnh = rt_tables[cpu][i]) == NULL)
ecdefdda
MD
783 continue;
784 rnh->rnh_walktree(rnh, if_rtdel, ifp);
785 }
984263bc 786 }
ecdefdda 787 lwkt_migratecpu(origcpu);
984263bc
MD
788
789 /* Announce that the interface is gone. */
790 rt_ifannouncemsg(ifp, IFAN_DEPARTURE);
71fc104f 791 devctl_notify("IFNET", ifp->if_xname, "DETACH", NULL);
984263bc 792
9c70fe43 793 SLIST_FOREACH(dp, &domains, dom_next)
698ac46c
HS
794 if (dp->dom_ifdetach && ifp->if_afdata[dp->dom_family])
795 (*dp->dom_ifdetach)(ifp,
796 ifp->if_afdata[dp->dom_family]);
698ac46c 797
141697b6
JS
798 /*
799 * Remove interface from ifindex2ifp[] and maybe decrement if_index.
800 */
75857e7c 801 ifindex2ifnet[ifp->if_index] = NULL;
141697b6
JS
802 while (if_index > 0 && ifindex2ifnet[if_index] == NULL)
803 if_index--;
75857e7c 804
984263bc 805 TAILQ_REMOVE(&ifnet, ifp, if_link);
b2632176 806 kfree(ifp->if_addrheads, M_IFADDR);
a71cbd17 807 kfree(ifp->if_start_nmsg, M_LWKTMSG);
4986965b 808 crit_exit();
984263bc
MD
809}
810
811/*
812 * Delete Routes for a Network Interface
f23061d4 813 *
984263bc
MD
814 * Called for each routing entry via the rnh->rnh_walktree() call above
815 * to delete all route entries referencing a detaching network interface.
816 *
817 * Arguments:
818 * rn pointer to node in the routing table
819 * arg argument passed to rnh->rnh_walktree() - detaching interface
820 *
821 * Returns:
822 * 0 successful
823 * errno failed - reason indicated
824 *
825 */
826static int
f23061d4 827if_rtdel(struct radix_node *rn, void *arg)
984263bc
MD
828{
829 struct rtentry *rt = (struct rtentry *)rn;
830 struct ifnet *ifp = arg;
831 int err;
832
833 if (rt->rt_ifp == ifp) {
834
835 /*
836 * Protect (sorta) against walktree recursion problems
837 * with cloned routes
838 */
f23061d4 839 if (!(rt->rt_flags & RTF_UP))
984263bc
MD
840 return (0);
841
842 err = rtrequest(RTM_DELETE, rt_key(rt), rt->rt_gateway,
843 rt_mask(rt), rt->rt_flags,
2038fb68 844 NULL);
984263bc
MD
845 if (err) {
846 log(LOG_WARNING, "if_rtdel: error %d\n", err);
847 }
848 }
849
850 return (0);
851}
852
984263bc
MD
853/*
854 * Locate an interface based on a complete address.
855 */
984263bc 856struct ifaddr *
f23061d4 857ifa_ifwithaddr(struct sockaddr *addr)
984263bc 858{
82ed7fc2 859 struct ifnet *ifp;
984263bc 860
b2632176
SZ
861 TAILQ_FOREACH(ifp, &ifnet, if_link) {
862 struct ifaddr_container *ifac;
863
864 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
865 struct ifaddr *ifa = ifac->ifa;
866
867 if (ifa->ifa_addr->sa_family != addr->sa_family)
868 continue;
869 if (sa_equal(addr, ifa->ifa_addr))
870 return (ifa);
871 if ((ifp->if_flags & IFF_BROADCAST) &&
872 ifa->ifa_broadaddr &&
873 /* IPv6 doesn't have broadcast */
874 ifa->ifa_broadaddr->sa_len != 0 &&
875 sa_equal(ifa->ifa_broadaddr, addr))
876 return (ifa);
877 }
984263bc 878 }
b2632176 879 return (NULL);
984263bc
MD
880}
881/*
882 * Locate the point to point interface with a given destination address.
883 */
984263bc 884struct ifaddr *
f23061d4 885ifa_ifwithdstaddr(struct sockaddr *addr)
984263bc 886{
82ed7fc2 887 struct ifnet *ifp;
984263bc 888
b2632176
SZ
889 TAILQ_FOREACH(ifp, &ifnet, if_link) {
890 struct ifaddr_container *ifac;
891
892 if (!(ifp->if_flags & IFF_POINTOPOINT))
893 continue;
894
895 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
896 struct ifaddr *ifa = ifac->ifa;
897
984263bc
MD
898 if (ifa->ifa_addr->sa_family != addr->sa_family)
899 continue;
0c3c561c
JH
900 if (ifa->ifa_dstaddr &&
901 sa_equal(addr, ifa->ifa_dstaddr))
984263bc 902 return (ifa);
b2632176 903 }
984263bc 904 }
b2632176 905 return (NULL);
984263bc
MD
906}
907
908/*
909 * Find an interface on a specific network. If many, choice
910 * is most specific found.
911 */
912struct ifaddr *
f23061d4 913ifa_ifwithnet(struct sockaddr *addr)
984263bc 914{
82ed7fc2 915 struct ifnet *ifp;
b2632176 916 struct ifaddr *ifa_maybe = NULL;
984263bc
MD
917 u_int af = addr->sa_family;
918 char *addr_data = addr->sa_data, *cplim;
919
920 /*
921 * AF_LINK addresses can be looked up directly by their index number,
922 * so do that if we can.
923 */
924 if (af == AF_LINK) {
b2632176 925 struct sockaddr_dl *sdl = (struct sockaddr_dl *)addr;
590b8cd4 926
b2632176
SZ
927 if (sdl->sdl_index && sdl->sdl_index <= if_index)
928 return (ifindex2ifnet[sdl->sdl_index]->if_lladdr);
984263bc
MD
929 }
930
931 /*
932 * Scan though each interface, looking for ones that have
933 * addresses in this address family.
934 */
935 TAILQ_FOREACH(ifp, &ifnet, if_link) {
b2632176
SZ
936 struct ifaddr_container *ifac;
937
938 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
939 struct ifaddr *ifa = ifac->ifa;
82ed7fc2 940 char *cp, *cp2, *cp3;
984263bc
MD
941
942 if (ifa->ifa_addr->sa_family != af)
943next: continue;
944 if (af == AF_INET && ifp->if_flags & IFF_POINTOPOINT) {
945 /*
946 * This is a bit broken as it doesn't
947 * take into account that the remote end may
948 * be a single node in the network we are
949 * looking for.
950 * The trouble is that we don't know the
951 * netmask for the remote end.
952 */
0c3c561c
JH
953 if (ifa->ifa_dstaddr != NULL &&
954 sa_equal(addr, ifa->ifa_dstaddr))
f23061d4 955 return (ifa);
984263bc
MD
956 } else {
957 /*
958 * if we have a special address handler,
959 * then use it instead of the generic one.
960 */
f23061d4 961 if (ifa->ifa_claim_addr) {
984263bc
MD
962 if ((*ifa->ifa_claim_addr)(ifa, addr)) {
963 return (ifa);
964 } else {
965 continue;
966 }
967 }
968
969 /*
970 * Scan all the bits in the ifa's address.
971 * If a bit dissagrees with what we are
972 * looking for, mask it with the netmask
973 * to see if it really matters.
974 * (A byte at a time)
975 */
976 if (ifa->ifa_netmask == 0)
977 continue;
978 cp = addr_data;
979 cp2 = ifa->ifa_addr->sa_data;
980 cp3 = ifa->ifa_netmask->sa_data;
590b8cd4
JH
981 cplim = ifa->ifa_netmask->sa_len +
982 (char *)ifa->ifa_netmask;
984263bc
MD
983 while (cp3 < cplim)
984 if ((*cp++ ^ *cp2++) & *cp3++)
985 goto next; /* next address! */
986 /*
987 * If the netmask of what we just found
988 * is more specific than what we had before
989 * (if we had one) then remember the new one
990 * before continuing to search
991 * for an even better one.
992 */
993 if (ifa_maybe == 0 ||
f23061d4
JH
994 rn_refines((char *)ifa->ifa_netmask,
995 (char *)ifa_maybe->ifa_netmask))
984263bc
MD
996 ifa_maybe = ifa;
997 }
998 }
999 }
1000 return (ifa_maybe);
1001}
1002
1003/*
1004 * Find an interface address specific to an interface best matching
1005 * a given address.
1006 */
1007struct ifaddr *
f23061d4 1008ifaof_ifpforaddr(struct sockaddr *addr, struct ifnet *ifp)
984263bc 1009{
b2632176 1010 struct ifaddr_container *ifac;
82ed7fc2
RG
1011 char *cp, *cp2, *cp3;
1012 char *cplim;
984263bc
MD
1013 struct ifaddr *ifa_maybe = 0;
1014 u_int af = addr->sa_family;
1015
1016 if (af >= AF_MAX)
1017 return (0);
b2632176
SZ
1018 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
1019 struct ifaddr *ifa = ifac->ifa;
1020
984263bc
MD
1021 if (ifa->ifa_addr->sa_family != af)
1022 continue;
1023 if (ifa_maybe == 0)
1024 ifa_maybe = ifa;
0c3c561c
JH
1025 if (ifa->ifa_netmask == NULL) {
1026 if (sa_equal(addr, ifa->ifa_addr) ||
1027 (ifa->ifa_dstaddr != NULL &&
1028 sa_equal(addr, ifa->ifa_dstaddr)))
984263bc
MD
1029 return (ifa);
1030 continue;
1031 }
1032 if (ifp->if_flags & IFF_POINTOPOINT) {
0c3c561c 1033 if (sa_equal(addr, ifa->ifa_dstaddr))
984263bc
MD
1034 return (ifa);
1035 } else {
1036 cp = addr->sa_data;
1037 cp2 = ifa->ifa_addr->sa_data;
1038 cp3 = ifa->ifa_netmask->sa_data;
1039 cplim = ifa->ifa_netmask->sa_len + (char *)ifa->ifa_netmask;
1040 for (; cp3 < cplim; cp3++)
1041 if ((*cp++ ^ *cp2++) & *cp3)
1042 break;
1043 if (cp3 == cplim)
1044 return (ifa);
1045 }
1046 }
1047 return (ifa_maybe);
1048}
1049
984263bc
MD
1050/*
1051 * Default action when installing a route with a Link Level gateway.
1052 * Lookup an appropriate real ifa to point to.
1053 * This should be moved to /sys/net/link.c eventually.
1054 */
1055static void
f23061d4 1056link_rtrequest(int cmd, struct rtentry *rt, struct rt_addrinfo *info)
984263bc 1057{
82ed7fc2 1058 struct ifaddr *ifa;
984263bc
MD
1059 struct sockaddr *dst;
1060 struct ifnet *ifp;
1061
f23061d4
JH
1062 if (cmd != RTM_ADD || (ifa = rt->rt_ifa) == NULL ||
1063 (ifp = ifa->ifa_ifp) == NULL || (dst = rt_key(rt)) == NULL)
984263bc
MD
1064 return;
1065 ifa = ifaof_ifpforaddr(dst, ifp);
f23061d4 1066 if (ifa != NULL) {
984263bc 1067 IFAFREE(rt->rt_ifa);
f23061d4 1068 IFAREF(ifa);
984263bc 1069 rt->rt_ifa = ifa;
984263bc
MD
1070 if (ifa->ifa_rtrequest && ifa->ifa_rtrequest != link_rtrequest)
1071 ifa->ifa_rtrequest(cmd, rt, info);
1072 }
1073}
1074
1075/*
1076 * Mark an interface down and notify protocols of
1077 * the transition.
1078 * NOTE: must be called at splnet or eqivalent.
1079 */
1080void
f23061d4 1081if_unroute(struct ifnet *ifp, int flag, int fam)
984263bc 1082{
b2632176 1083 struct ifaddr_container *ifac;
984263bc
MD
1084
1085 ifp->if_flags &= ~flag;
1086 getmicrotime(&ifp->if_lastchange);
b2632176
SZ
1087 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
1088 struct ifaddr *ifa = ifac->ifa;
1089
984263bc 1090 if (fam == PF_UNSPEC || (fam == ifa->ifa_addr->sa_family))
91be174d 1091 kpfctlinput(PRC_IFDOWN, ifa->ifa_addr);
b2632176 1092 }
4d723e5a 1093 ifq_purge(&ifp->if_snd);
984263bc
MD
1094 rt_ifmsg(ifp);
1095}
1096
1097/*
1098 * Mark an interface up and notify protocols of
1099 * the transition.
1100 * NOTE: must be called at splnet or eqivalent.
1101 */
1102void
f23061d4 1103if_route(struct ifnet *ifp, int flag, int fam)
984263bc 1104{
b2632176 1105 struct ifaddr_container *ifac;
984263bc 1106
68633c85 1107 ifq_purge(&ifp->if_snd);
984263bc
MD
1108 ifp->if_flags |= flag;
1109 getmicrotime(&ifp->if_lastchange);
b2632176
SZ
1110 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
1111 struct ifaddr *ifa = ifac->ifa;
1112
984263bc 1113 if (fam == PF_UNSPEC || (fam == ifa->ifa_addr->sa_family))
91be174d 1114 kpfctlinput(PRC_IFUP, ifa->ifa_addr);
b2632176 1115 }
984263bc
MD
1116 rt_ifmsg(ifp);
1117#ifdef INET6
1118 in6_if_up(ifp);
1119#endif
1120}
1121
1122/*
5c703385
MD
1123 * Mark an interface down and notify protocols of the transition. An
1124 * interface going down is also considered to be a synchronizing event.
1125 * We must ensure that all packet processing related to the interface
1126 * has completed before we return so e.g. the caller can free the ifnet
1127 * structure that the mbufs may be referencing.
1128 *
984263bc
MD
1129 * NOTE: must be called at splnet or eqivalent.
1130 */
1131void
f23061d4 1132if_down(struct ifnet *ifp)
984263bc 1133{
984263bc 1134 if_unroute(ifp, IFF_UP, AF_UNSPEC);
5c703385 1135 netmsg_service_sync();
984263bc
MD
1136}
1137
1138/*
1139 * Mark an interface up and notify protocols of
1140 * the transition.
1141 * NOTE: must be called at splnet or eqivalent.
1142 */
1143void
f23061d4 1144if_up(struct ifnet *ifp)
984263bc 1145{
984263bc
MD
1146 if_route(ifp, IFF_UP, AF_UNSPEC);
1147}
1148
6de83abe
SZ
1149/*
1150 * Process a link state change.
1151 * NOTE: must be called at splsoftnet or equivalent.
1152 */
1153void
1154if_link_state_change(struct ifnet *ifp)
1155{
71fc104f
HT
1156 int link_state = ifp->if_link_state;
1157
6de83abe 1158 rt_ifmsg(ifp);
71fc104f
HT
1159 devctl_notify("IFNET", ifp->if_xname,
1160 (link_state == LINK_STATE_UP) ? "LINK_UP" : "LINK_DOWN", NULL);
6de83abe
SZ
1161}
1162
984263bc
MD
1163/*
1164 * Handle interface watchdog timer routines. Called
1165 * from softclock, we decrement timers (if set) and
1166 * call the appropriate interface routine on expiration.
1167 */
1168static void
f23061d4 1169if_slowtimo(void *arg)
984263bc 1170{
82ed7fc2 1171 struct ifnet *ifp;
4986965b
JS
1172
1173 crit_enter();
984263bc
MD
1174
1175 TAILQ_FOREACH(ifp, &ifnet, if_link) {
1176 if (ifp->if_timer == 0 || --ifp->if_timer)
1177 continue;
78195a76 1178 if (ifp->if_watchdog) {
a3dd34d2 1179 if (ifnet_tryserialize_all(ifp)) {
78195a76 1180 (*ifp->if_watchdog)(ifp);
a3dd34d2 1181 ifnet_deserialize_all(ifp);
78195a76
MD
1182 } else {
1183 /* try again next timeout */
1184 ++ifp->if_timer;
1185 }
1186 }
984263bc 1187 }
4986965b
JS
1188
1189 crit_exit();
1190
abbb44bb 1191 callout_reset(&if_slowtimo_timer, hz / IFNET_SLOWHZ, if_slowtimo, NULL);
984263bc
MD
1192}
1193
1194/*
1195 * Map interface name to
1196 * interface structure pointer.
1197 */
1198struct ifnet *
1199ifunit(const char *name)
1200{
984263bc 1201 struct ifnet *ifp;
984263bc 1202
984263bc 1203 /*
3e4a09e7 1204 * Search all the interfaces for this name/number
984263bc 1205 */
3e4a09e7 1206
984263bc 1207 TAILQ_FOREACH(ifp, &ifnet, if_link) {
3e4a09e7 1208 if (strncmp(ifp->if_xname, name, IFNAMSIZ) == 0)
984263bc
MD
1209 break;
1210 }
1211 return (ifp);
1212}
1213
1214
1215/*
1216 * Map interface name in a sockaddr_dl to
1217 * interface structure pointer.
1218 */
1219struct ifnet *
f23061d4 1220if_withname(struct sockaddr *sa)
984263bc
MD
1221{
1222 char ifname[IFNAMSIZ+1];
1223 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
1224
1225 if ( (sa->sa_family != AF_LINK) || (sdl->sdl_nlen == 0) ||
1226 (sdl->sdl_nlen > IFNAMSIZ) )
1227 return NULL;
1228
1229 /*
1230 * ifunit wants a null-terminated name. It may not be null-terminated
1231 * in the sockaddr. We don't want to change the caller's sockaddr,
1232 * and there might not be room to put the trailing null anyway, so we
1233 * make a local copy that we know we can null terminate safely.
1234 */
1235
1236 bcopy(sdl->sdl_data, ifname, sdl->sdl_nlen);
1237 ifname[sdl->sdl_nlen] = '\0';
1238 return ifunit(ifname);
1239}
1240
1241
1242/*
1243 * Interface ioctls.
1244 */
1245int
87de5057 1246ifioctl(struct socket *so, u_long cmd, caddr_t data, struct ucred *cred)
984263bc 1247{
41c20dac
MD
1248 struct ifnet *ifp;
1249 struct ifreq *ifr;
984263bc
MD
1250 struct ifstat *ifs;
1251 int error;
1252 short oif_flags;
1253 int new_flags;
1fdf0954
HP
1254 size_t namelen, onamelen;
1255 char new_name[IFNAMSIZ];
1256 struct ifaddr *ifa;
1257 struct sockaddr_dl *sdl;
984263bc
MD
1258
1259 switch (cmd) {
1260
1261 case SIOCGIFCONF:
1262 case OSIOCGIFCONF:
87de5057 1263 return (ifconf(cmd, data, cred));
984263bc
MD
1264 }
1265 ifr = (struct ifreq *)data;
1266
1267 switch (cmd) {
1268 case SIOCIFCREATE:
c5e14c14
RP
1269 case SIOCIFCREATE2:
1270 if ((error = priv_check_cred(cred, PRIV_ROOT, 0)) != 0)
1271 return (error);
1272 return (if_clone_create(ifr->ifr_name, sizeof(ifr->ifr_name),
1273 cmd == SIOCIFCREATE2 ? ifr->ifr_data : NULL));
984263bc 1274 case SIOCIFDESTROY:
895c1f85 1275 if ((error = priv_check_cred(cred, PRIV_ROOT, 0)) != 0)
984263bc 1276 return (error);
c5e14c14 1277 return (if_clone_destroy(ifr->ifr_name));
f23061d4 1278
984263bc
MD
1279 case SIOCIFGCLONERS:
1280 return (if_clone_list((struct if_clonereq *)data));
1281 }
1282
1283 ifp = ifunit(ifr->ifr_name);
1284 if (ifp == 0)
1285 return (ENXIO);
1286 switch (cmd) {
1287
12b71966
PA
1288 case SIOCGIFINDEX:
1289 ifr->ifr_index = ifp->if_index;
1290 break;
1291
984263bc
MD
1292 case SIOCGIFFLAGS:
1293 ifr->ifr_flags = ifp->if_flags;
46f25451 1294 ifr->ifr_flagshigh = ifp->if_flags >> 16;
984263bc
MD
1295 break;
1296
1297 case SIOCGIFCAP:
1298 ifr->ifr_reqcap = ifp->if_capabilities;
1299 ifr->ifr_curcap = ifp->if_capenable;
1300 break;
1301
1302 case SIOCGIFMETRIC:
1303 ifr->ifr_metric = ifp->if_metric;
1304 break;
1305
1306 case SIOCGIFMTU:
1307 ifr->ifr_mtu = ifp->if_mtu;
1308 break;
1309
1310 case SIOCGIFPHYS:
1311 ifr->ifr_phys = ifp->if_physical;
1312 break;
1313
1630efc5
SZ
1314 case SIOCGIFPOLLCPU:
1315#ifdef DEVICE_POLLING
1316 ifr->ifr_pollcpu = ifp->if_poll_cpuid;
1317#else
1318 ifr->ifr_pollcpu = -1;
1319#endif
1320 break;
1321
1322 case SIOCSIFPOLLCPU:
1323#ifdef DEVICE_POLLING
1324 if ((ifp->if_flags & IFF_POLLING) == 0)
1325 ether_pollcpu_register(ifp, ifr->ifr_pollcpu);
1326#endif
1327 break;
1328
984263bc 1329 case SIOCSIFFLAGS:
895c1f85 1330 error = priv_check_cred(cred, PRIV_ROOT, 0);
984263bc
MD
1331 if (error)
1332 return (error);
1333 new_flags = (ifr->ifr_flags & 0xffff) |
1334 (ifr->ifr_flagshigh << 16);
1335 if (ifp->if_flags & IFF_SMART) {
1336 /* Smart drivers twiddle their own routes */
1337 } else if (ifp->if_flags & IFF_UP &&
1338 (new_flags & IFF_UP) == 0) {
4986965b 1339 crit_enter();
984263bc 1340 if_down(ifp);
4986965b 1341 crit_exit();
984263bc
MD
1342 } else if (new_flags & IFF_UP &&
1343 (ifp->if_flags & IFF_UP) == 0) {
4986965b 1344 crit_enter();
984263bc 1345 if_up(ifp);
4986965b 1346 crit_exit();
984263bc 1347 }
9c095379
MD
1348
1349#ifdef DEVICE_POLLING
1350 if ((new_flags ^ ifp->if_flags) & IFF_POLLING) {
1351 if (new_flags & IFF_POLLING) {
1352 ether_poll_register(ifp);
1353 } else {
1354 ether_poll_deregister(ifp);
1355 }
1356 }
1357#endif
b3a7093f
SZ
1358#ifdef IFPOLL_ENABLE
1359 if ((new_flags ^ ifp->if_flags) & IFF_NPOLLING) {
1360 if (new_flags & IFF_NPOLLING)
1361 ifpoll_register(ifp);
1362 else
1363 ifpoll_deregister(ifp);
1364 }
1365#endif
9c095379 1366
984263bc
MD
1367 ifp->if_flags = (ifp->if_flags & IFF_CANTCHANGE) |
1368 (new_flags &~ IFF_CANTCHANGE);
984263bc
MD
1369 if (new_flags & IFF_PPROMISC) {
1370 /* Permanently promiscuous mode requested */
1371 ifp->if_flags |= IFF_PROMISC;
1372 } else if (ifp->if_pcount == 0) {
1373 ifp->if_flags &= ~IFF_PROMISC;
1374 }
78195a76 1375 if (ifp->if_ioctl) {
a3dd34d2 1376 ifnet_serialize_all(ifp);
87de5057 1377 ifp->if_ioctl(ifp, cmd, data, cred);
a3dd34d2 1378 ifnet_deserialize_all(ifp);
78195a76 1379 }
984263bc
MD
1380 getmicrotime(&ifp->if_lastchange);
1381 break;
1382
1383 case SIOCSIFCAP:
895c1f85 1384 error = priv_check_cred(cred, PRIV_ROOT, 0);
984263bc
MD
1385 if (error)
1386 return (error);
1387 if (ifr->ifr_reqcap & ~ifp->if_capabilities)
1388 return (EINVAL);
a3dd34d2 1389 ifnet_serialize_all(ifp);
87de5057 1390 ifp->if_ioctl(ifp, cmd, data, cred);
a3dd34d2 1391 ifnet_deserialize_all(ifp);
984263bc
MD
1392 break;
1393
f23061d4 1394 case SIOCSIFNAME:
895c1f85 1395 error = priv_check_cred(cred, PRIV_ROOT, 0);
f23061d4
JH
1396 if (error != 0)
1397 return (error);
1398 error = copyinstr(ifr->ifr_data, new_name, IFNAMSIZ, NULL);
1399 if (error != 0)
1400 return (error);
1fdf0954
HP
1401 if (new_name[0] == '\0')
1402 return (EINVAL);
f23061d4
JH
1403 if (ifunit(new_name) != NULL)
1404 return (EEXIST);
f2bd8b67
JS
1405
1406 EVENTHANDLER_INVOKE(ifnet_detach_event, ifp);
f23061d4
JH
1407
1408 /* Announce the departure of the interface. */
1409 rt_ifannouncemsg(ifp, IFAN_DEPARTURE);
1410
1411 strlcpy(ifp->if_xname, new_name, sizeof(ifp->if_xname));
b2632176 1412 ifa = TAILQ_FIRST(&ifp->if_addrheads[mycpuid])->ifa;
f23061d4
JH
1413 /* XXX IFA_LOCK(ifa); */
1414 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
1415 namelen = strlen(new_name);
1416 onamelen = sdl->sdl_nlen;
1417 /*
1418 * Move the address if needed. This is safe because we
1419 * allocate space for a name of length IFNAMSIZ when we
1420 * create this in if_attach().
1421 */
1422 if (namelen != onamelen) {
1423 bcopy(sdl->sdl_data + onamelen,
1424 sdl->sdl_data + namelen, sdl->sdl_alen);
1425 }
1426 bcopy(new_name, sdl->sdl_data, namelen);
1427 sdl->sdl_nlen = namelen;
1428 sdl = (struct sockaddr_dl *)ifa->ifa_netmask;
1429 bzero(sdl->sdl_data, onamelen);
1430 while (namelen != 0)
1431 sdl->sdl_data[--namelen] = 0xff;
1432 /* XXX IFA_UNLOCK(ifa) */
f2bd8b67
JS
1433
1434 EVENTHANDLER_INVOKE(ifnet_attach_event, ifp);
f23061d4
JH
1435
1436 /* Announce the return of the interface. */
1437 rt_ifannouncemsg(ifp, IFAN_ARRIVAL);
1438 break;
1fdf0954 1439
984263bc 1440 case SIOCSIFMETRIC:
895c1f85 1441 error = priv_check_cred(cred, PRIV_ROOT, 0);
984263bc
MD
1442 if (error)
1443 return (error);
1444 ifp->if_metric = ifr->ifr_metric;
1445 getmicrotime(&ifp->if_lastchange);
1446 break;
1447
1448 case SIOCSIFPHYS:
895c1f85 1449 error = priv_check_cred(cred, PRIV_ROOT, 0);
984263bc
MD
1450 if (error)
1451 return error;
1452 if (!ifp->if_ioctl)
1453 return EOPNOTSUPP;
a3dd34d2 1454 ifnet_serialize_all(ifp);
87de5057 1455 error = ifp->if_ioctl(ifp, cmd, data, cred);
a3dd34d2 1456 ifnet_deserialize_all(ifp);
984263bc
MD
1457 if (error == 0)
1458 getmicrotime(&ifp->if_lastchange);
f23061d4 1459 return (error);
984263bc
MD
1460
1461 case SIOCSIFMTU:
1462 {
1463 u_long oldmtu = ifp->if_mtu;
1464
895c1f85 1465 error = priv_check_cred(cred, PRIV_ROOT, 0);
984263bc
MD
1466 if (error)
1467 return (error);
1468 if (ifp->if_ioctl == NULL)
1469 return (EOPNOTSUPP);
1470 if (ifr->ifr_mtu < IF_MINMTU || ifr->ifr_mtu > IF_MAXMTU)
1471 return (EINVAL);
a3dd34d2 1472 ifnet_serialize_all(ifp);
87de5057 1473 error = ifp->if_ioctl(ifp, cmd, data, cred);
a3dd34d2 1474 ifnet_deserialize_all(ifp);
984263bc
MD
1475 if (error == 0) {
1476 getmicrotime(&ifp->if_lastchange);
1477 rt_ifmsg(ifp);
1478 }
1479 /*
1480 * If the link MTU changed, do network layer specific procedure.
1481 */
1482 if (ifp->if_mtu != oldmtu) {
1483#ifdef INET6
1484 nd6_setmtu(ifp);
1485#endif
1486 }
1487 return (error);
1488 }
1489
1490 case SIOCADDMULTI:
1491 case SIOCDELMULTI:
895c1f85 1492 error = priv_check_cred(cred, PRIV_ROOT, 0);
984263bc
MD
1493 if (error)
1494 return (error);
1495
1496 /* Don't allow group membership on non-multicast interfaces. */
1497 if ((ifp->if_flags & IFF_MULTICAST) == 0)
1498 return EOPNOTSUPP;
1499
1500 /* Don't let users screw up protocols' entries. */
1501 if (ifr->ifr_addr.sa_family != AF_LINK)
1502 return EINVAL;
1503
1504 if (cmd == SIOCADDMULTI) {
1505 struct ifmultiaddr *ifma;
1506 error = if_addmulti(ifp, &ifr->ifr_addr, &ifma);
1507 } else {
1508 error = if_delmulti(ifp, &ifr->ifr_addr);
1509 }
1510 if (error == 0)
1511 getmicrotime(&ifp->if_lastchange);
1512 return error;
1513
1514 case SIOCSIFPHYADDR:
1515 case SIOCDIFPHYADDR:
1516#ifdef INET6
1517 case SIOCSIFPHYADDR_IN6:
1518#endif
1519 case SIOCSLIFPHYADDR:
1520 case SIOCSIFMEDIA:
1521 case SIOCSIFGENERIC:
895c1f85 1522 error = priv_check_cred(cred, PRIV_ROOT, 0);
984263bc
MD
1523 if (error)
1524 return (error);
1525 if (ifp->if_ioctl == 0)
1526 return (EOPNOTSUPP);
a3dd34d2 1527 ifnet_serialize_all(ifp);
87de5057 1528 error = ifp->if_ioctl(ifp, cmd, data, cred);
a3dd34d2 1529 ifnet_deserialize_all(ifp);
984263bc
MD
1530 if (error == 0)
1531 getmicrotime(&ifp->if_lastchange);
1532 return error;
1533
1534 case SIOCGIFSTATUS:
1535 ifs = (struct ifstat *)data;
1536 ifs->ascii[0] = '\0';
f23061d4 1537
984263bc
MD
1538 case SIOCGIFPSRCADDR:
1539 case SIOCGIFPDSTADDR:
1540 case SIOCGLIFPHYADDR:
1541 case SIOCGIFMEDIA:
1542 case SIOCGIFGENERIC:
78195a76 1543 if (ifp->if_ioctl == NULL)
984263bc 1544 return (EOPNOTSUPP);
a3dd34d2 1545 ifnet_serialize_all(ifp);
87de5057 1546 error = ifp->if_ioctl(ifp, cmd, data, cred);
a3dd34d2 1547 ifnet_deserialize_all(ifp);
78195a76 1548 return (error);
984263bc
MD
1549
1550 case SIOCSIFLLADDR:
895c1f85 1551 error = priv_check_cred(cred, PRIV_ROOT, 0);
984263bc
MD
1552 if (error)
1553 return (error);
19f10c78 1554 error = if_setlladdr(ifp,
984263bc 1555 ifr->ifr_addr.sa_data, ifr->ifr_addr.sa_len);
19f10c78
RP
1556 EVENTHANDLER_INVOKE(iflladdr_event, ifp);
1557 return (error);
984263bc
MD
1558
1559 default:
1560 oif_flags = ifp->if_flags;
1561 if (so->so_proto == 0)
1562 return (EOPNOTSUPP);
1563#ifndef COMPAT_43
87de5057 1564 error = so_pru_control(so, cmd, data, ifp);
984263bc
MD
1565#else
1566 {
1567 int ocmd = cmd;
1568
1569 switch (cmd) {
1570
1571 case SIOCSIFDSTADDR:
1572 case SIOCSIFADDR:
1573 case SIOCSIFBRDADDR:
1574 case SIOCSIFNETMASK:
1575#if BYTE_ORDER != BIG_ENDIAN
1576 if (ifr->ifr_addr.sa_family == 0 &&
1577 ifr->ifr_addr.sa_len < 16) {
1578 ifr->ifr_addr.sa_family = ifr->ifr_addr.sa_len;
1579 ifr->ifr_addr.sa_len = 16;
1580 }
1581#else
1582 if (ifr->ifr_addr.sa_len == 0)
1583 ifr->ifr_addr.sa_len = 16;
1584#endif
1585 break;
1586
1587 case OSIOCGIFADDR:
1588 cmd = SIOCGIFADDR;
1589 break;
1590
1591 case OSIOCGIFDSTADDR:
1592 cmd = SIOCGIFDSTADDR;
1593 break;
1594
1595 case OSIOCGIFBRDADDR:
1596 cmd = SIOCGIFBRDADDR;
1597 break;
1598
1599 case OSIOCGIFNETMASK:
1600 cmd = SIOCGIFNETMASK;
1601 }
87de5057 1602 error = so_pru_control(so, cmd, data, ifp);
984263bc
MD
1603 switch (ocmd) {
1604
1605 case OSIOCGIFADDR:
1606 case OSIOCGIFDSTADDR:
1607 case OSIOCGIFBRDADDR:
1608 case OSIOCGIFNETMASK:
1609 *(u_short *)&ifr->ifr_addr = ifr->ifr_addr.sa_family;
1610
1611 }
1612 }
1613#endif /* COMPAT_43 */
1614
1615 if ((oif_flags ^ ifp->if_flags) & IFF_UP) {
1616#ifdef INET6
1617 DELAY(100);/* XXX: temporary workaround for fxp issue*/
1618 if (ifp->if_flags & IFF_UP) {
4986965b 1619 crit_enter();
984263bc 1620 in6_if_up(ifp);
4986965b 1621 crit_exit();
984263bc
MD
1622 }
1623#endif
1624 }
1625 return (error);
1626
1627 }
1628 return (0);
1629}
1630
1631/*
1632 * Set/clear promiscuous mode on interface ifp based on the truth value
1633 * of pswitch. The calls are reference counted so that only the first
1634 * "on" request actually has an effect, as does the final "off" request.
1635 * Results are undefined if the "off" and "on" requests are not matched.
1636 */
1637int
f23061d4 1638ifpromisc(struct ifnet *ifp, int pswitch)
984263bc
MD
1639{
1640 struct ifreq ifr;
1641 int error;
1642 int oldflags;
1643
1644 oldflags = ifp->if_flags;
46f25451 1645 if (ifp->if_flags & IFF_PPROMISC) {
984263bc
MD
1646 /* Do nothing if device is in permanently promiscuous mode */
1647 ifp->if_pcount += pswitch ? 1 : -1;
1648 return (0);
1649 }
1650 if (pswitch) {
1651 /*
1652 * If the device is not configured up, we cannot put it in
1653 * promiscuous mode.
1654 */
1655 if ((ifp->if_flags & IFF_UP) == 0)
1656 return (ENETDOWN);
1657 if (ifp->if_pcount++ != 0)
1658 return (0);
1659 ifp->if_flags |= IFF_PROMISC;
3e4a09e7
MD
1660 log(LOG_INFO, "%s: promiscuous mode enabled\n",
1661 ifp->if_xname);
984263bc
MD
1662 } else {
1663 if (--ifp->if_pcount > 0)
1664 return (0);
1665 ifp->if_flags &= ~IFF_PROMISC;
3e4a09e7
MD
1666 log(LOG_INFO, "%s: promiscuous mode disabled\n",
1667 ifp->if_xname);
984263bc
MD
1668 }
1669 ifr.ifr_flags = ifp->if_flags;
46f25451 1670 ifr.ifr_flagshigh = ifp->if_flags >> 16;
a3dd34d2
SZ
1671 ifnet_serialize_all(ifp);
1672 error = ifp->if_ioctl(ifp, SIOCSIFFLAGS, (caddr_t)&ifr, NULL);
1673 ifnet_deserialize_all(ifp);
984263bc
MD
1674 if (error == 0)
1675 rt_ifmsg(ifp);
1676 else
1677 ifp->if_flags = oldflags;
1678 return error;
1679}
1680
1681/*
1682 * Return interface configuration
1683 * of system. List may be used
1684 * in later ioctl's (above) to get
1685 * other information.
1686 */
984263bc 1687static int
87de5057 1688ifconf(u_long cmd, caddr_t data, struct ucred *cred)
984263bc 1689{
41c20dac
MD
1690 struct ifconf *ifc = (struct ifconf *)data;
1691 struct ifnet *ifp;
984263bc
MD
1692 struct sockaddr *sa;
1693 struct ifreq ifr, *ifrp;
1694 int space = ifc->ifc_len, error = 0;
1695
1696 ifrp = ifc->ifc_req;
1697 TAILQ_FOREACH(ifp, &ifnet, if_link) {
b2632176 1698 struct ifaddr_container *ifac;
3e4a09e7 1699 int addrs;
984263bc 1700
f23061d4 1701 if (space <= sizeof ifr)
984263bc 1702 break;
623c059e
JS
1703
1704 /*
95f018e8
MD
1705 * Zero the stack declared structure first to prevent
1706 * memory disclosure.
623c059e 1707 */
95f018e8 1708 bzero(&ifr, sizeof(ifr));
3e4a09e7
MD
1709 if (strlcpy(ifr.ifr_name, ifp->if_xname, sizeof(ifr.ifr_name))
1710 >= sizeof(ifr.ifr_name)) {
984263bc
MD
1711 error = ENAMETOOLONG;
1712 break;
984263bc
MD
1713 }
1714
1715 addrs = 0;
b2632176
SZ
1716 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
1717 struct ifaddr *ifa = ifac->ifa;
1718
f23061d4 1719 if (space <= sizeof ifr)
984263bc
MD
1720 break;
1721 sa = ifa->ifa_addr;
87de5057
MD
1722 if (cred->cr_prison &&
1723 prison_if(cred, sa))
984263bc
MD
1724 continue;
1725 addrs++;
1726#ifdef COMPAT_43
1727 if (cmd == OSIOCGIFCONF) {
1728 struct osockaddr *osa =
1729 (struct osockaddr *)&ifr.ifr_addr;
1730 ifr.ifr_addr = *sa;
1731 osa->sa_family = sa->sa_family;
f23061d4 1732 error = copyout(&ifr, ifrp, sizeof ifr);
984263bc
MD
1733 ifrp++;
1734 } else
1735#endif
1736 if (sa->sa_len <= sizeof(*sa)) {
1737 ifr.ifr_addr = *sa;
f23061d4 1738 error = copyout(&ifr, ifrp, sizeof ifr);
984263bc
MD
1739 ifrp++;
1740 } else {
f23061d4 1741 if (space < (sizeof ifr) + sa->sa_len -
984263bc
MD
1742 sizeof(*sa))
1743 break;
1744 space -= sa->sa_len - sizeof(*sa);
f23061d4
JH
1745 error = copyout(&ifr, ifrp,
1746 sizeof ifr.ifr_name);
984263bc 1747 if (error == 0)
f23061d4
JH
1748 error = copyout(sa, &ifrp->ifr_addr,
1749 sa->sa_len);
984263bc
MD
1750 ifrp = (struct ifreq *)
1751 (sa->sa_len + (caddr_t)&ifrp->ifr_addr);
1752 }
1753 if (error)
1754 break;
f23061d4 1755 space -= sizeof ifr;
984263bc
MD
1756 }
1757 if (error)
1758 break;
1759 if (!addrs) {
f23061d4
JH
1760 bzero(&ifr.ifr_addr, sizeof ifr.ifr_addr);
1761 error = copyout(&ifr, ifrp, sizeof ifr);
984263bc
MD
1762 if (error)
1763 break;
f23061d4 1764 space -= sizeof ifr;
984263bc
MD
1765 ifrp++;
1766 }
1767 }
1768 ifc->ifc_len -= space;
1769 return (error);
1770}
1771
1772/*
1773 * Just like if_promisc(), but for all-multicast-reception mode.
1774 */
1775int
f23061d4 1776if_allmulti(struct ifnet *ifp, int onswitch)
984263bc
MD
1777{
1778 int error = 0;
984263bc
MD
1779 struct ifreq ifr;
1780
4986965b
JS
1781 crit_enter();
1782
984263bc
MD
1783 if (onswitch) {
1784 if (ifp->if_amcount++ == 0) {
1785 ifp->if_flags |= IFF_ALLMULTI;
1786 ifr.ifr_flags = ifp->if_flags;
46f25451 1787 ifr.ifr_flagshigh = ifp->if_flags >> 16;
a3dd34d2 1788 ifnet_serialize_all(ifp);
bd4539cc 1789 error = ifp->if_ioctl(ifp, SIOCSIFFLAGS, (caddr_t)&ifr,
2038fb68 1790 NULL);
a3dd34d2 1791 ifnet_deserialize_all(ifp);
984263bc
MD
1792 }
1793 } else {
1794 if (ifp->if_amcount > 1) {
1795 ifp->if_amcount--;
1796 } else {
1797 ifp->if_amcount = 0;
1798 ifp->if_flags &= ~IFF_ALLMULTI;
1799 ifr.ifr_flags = ifp->if_flags;
46f25451 1800 ifr.ifr_flagshigh = ifp->if_flags >> 16;
a3dd34d2 1801 ifnet_serialize_all(ifp);
bd4539cc 1802 error = ifp->if_ioctl(ifp, SIOCSIFFLAGS, (caddr_t)&ifr,
2038fb68 1803 NULL);
a3dd34d2 1804 ifnet_deserialize_all(ifp);
984263bc
MD
1805 }
1806 }
4986965b
JS
1807
1808 crit_exit();
984263bc
MD
1809
1810 if (error == 0)
1811 rt_ifmsg(ifp);
1812 return error;
1813}
1814
1815/*
1816 * Add a multicast listenership to the interface in question.
1817 * The link layer provides a routine which converts
1818 */
1819int
f23061d4
JH
1820if_addmulti(
1821 struct ifnet *ifp, /* interface to manipulate */
1822 struct sockaddr *sa, /* address to add */
1823 struct ifmultiaddr **retifma)
984263bc
MD
1824{
1825 struct sockaddr *llsa, *dupsa;
4986965b 1826 int error;
984263bc
MD
1827 struct ifmultiaddr *ifma;
1828
1829 /*
1830 * If the matching multicast address already exists
1831 * then don't add a new one, just add a reference
1832 */
1833 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
0c3c561c 1834 if (sa_equal(sa, ifma->ifma_addr)) {
984263bc
MD
1835 ifma->ifma_refcount++;
1836 if (retifma)
1837 *retifma = ifma;
1838 return 0;
1839 }
1840 }
1841
1842 /*
1843 * Give the link layer a chance to accept/reject it, and also
1844 * find out which AF_LINK address this maps to, if it isn't one
1845 * already.
1846 */
1847 if (ifp->if_resolvemulti) {
a3dd34d2 1848 ifnet_serialize_all(ifp);
984263bc 1849 error = ifp->if_resolvemulti(ifp, &llsa, sa);
a3dd34d2 1850 ifnet_deserialize_all(ifp);
78195a76
MD
1851 if (error)
1852 return error;
984263bc
MD
1853 } else {
1854 llsa = 0;
1855 }
1856
1857 MALLOC(ifma, struct ifmultiaddr *, sizeof *ifma, M_IFMADDR, M_WAITOK);
1858 MALLOC(dupsa, struct sockaddr *, sa->sa_len, M_IFMADDR, M_WAITOK);
1859 bcopy(sa, dupsa, sa->sa_len);
1860
1861 ifma->ifma_addr = dupsa;
1862 ifma->ifma_lladdr = llsa;
1863 ifma->ifma_ifp = ifp;
1864 ifma->ifma_refcount = 1;
1865 ifma->ifma_protospec = 0;
1866 rt_newmaddrmsg(RTM_NEWMADDR, ifma);
1867
1868 /*
1869 * Some network interfaces can scan the address list at
1870 * interrupt time; lock them out.
1871 */
4986965b 1872 crit_enter();
984263bc 1873 LIST_INSERT_HEAD(&ifp->if_multiaddrs, ifma, ifma_link);
4986965b 1874 crit_exit();
6cd0715f
RP
1875 if (retifma)
1876 *retifma = ifma;
984263bc
MD
1877
1878 if (llsa != 0) {
1879 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
0c3c561c 1880 if (sa_equal(ifma->ifma_addr, llsa))
984263bc
MD
1881 break;
1882 }
1883 if (ifma) {
1884 ifma->ifma_refcount++;
1885 } else {
1886 MALLOC(ifma, struct ifmultiaddr *, sizeof *ifma,
1887 M_IFMADDR, M_WAITOK);
1888 MALLOC(dupsa, struct sockaddr *, llsa->sa_len,
1889 M_IFMADDR, M_WAITOK);
1890 bcopy(llsa, dupsa, llsa->sa_len);
1891 ifma->ifma_addr = dupsa;
1892 ifma->ifma_ifp = ifp;
1893 ifma->ifma_refcount = 1;
4986965b 1894 crit_enter();
984263bc 1895 LIST_INSERT_HEAD(&ifp->if_multiaddrs, ifma, ifma_link);
4986965b 1896 crit_exit();
984263bc
MD
1897 }
1898 }
1899 /*
1900 * We are certain we have added something, so call down to the
1901 * interface to let them know about it.
1902 */
4986965b 1903 crit_enter();
a3dd34d2 1904 ifnet_serialize_all(ifp);
6cd0715f
RP
1905 if (ifp->if_ioctl)
1906 ifp->if_ioctl(ifp, SIOCADDMULTI, 0, NULL);
a3dd34d2 1907 ifnet_deserialize_all(ifp);
4986965b 1908 crit_exit();
984263bc
MD
1909
1910 return 0;
1911}
1912
1913/*
1914 * Remove a reference to a multicast address on this interface. Yell
1915 * if the request does not match an existing membership.
1916 */
1917int
f23061d4 1918if_delmulti(struct ifnet *ifp, struct sockaddr *sa)
984263bc
MD
1919{
1920 struct ifmultiaddr *ifma;
984263bc
MD
1921
1922 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
0c3c561c 1923 if (sa_equal(sa, ifma->ifma_addr))
984263bc
MD
1924 break;
1925 if (ifma == 0)
1926 return ENOENT;
1927
1928 if (ifma->ifma_refcount > 1) {
1929 ifma->ifma_refcount--;
1930 return 0;
1931 }
1932
1933 rt_newmaddrmsg(RTM_DELMADDR, ifma);
1934 sa = ifma->ifma_lladdr;
4986965b 1935 crit_enter();
984263bc
MD
1936 LIST_REMOVE(ifma, ifma_link);
1937 /*
1938 * Make sure the interface driver is notified
1939 * in the case of a link layer mcast group being left.
1940 */
78195a76 1941 if (ifma->ifma_addr->sa_family == AF_LINK && sa == 0) {
a3dd34d2 1942 ifnet_serialize_all(ifp);
2038fb68 1943 ifp->if_ioctl(ifp, SIOCDELMULTI, 0, NULL);
a3dd34d2 1944 ifnet_deserialize_all(ifp);
78195a76 1945 }
4986965b 1946 crit_exit();
efda3bd0
MD
1947 kfree(ifma->ifma_addr, M_IFMADDR);
1948 kfree(ifma, M_IFMADDR);
984263bc
MD
1949 if (sa == 0)
1950 return 0;
1951
1952 /*
1953 * Now look for the link-layer address which corresponds to
1954 * this network address. It had been squirreled away in
1955 * ifma->ifma_lladdr for this purpose (so we don't have
1956 * to call ifp->if_resolvemulti() again), and we saved that
1957 * value in sa above. If some nasty deleted the
1958 * link-layer address out from underneath us, we can deal because
1959 * the address we stored was is not the same as the one which was
1960 * in the record for the link-layer address. (So we don't complain
1961 * in that case.)
1962 */
1963 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
0c3c561c 1964 if (sa_equal(sa, ifma->ifma_addr))
984263bc
MD
1965 break;
1966 if (ifma == 0)
1967 return 0;
1968
1969 if (ifma->ifma_refcount > 1) {
1970 ifma->ifma_refcount--;
1971 return 0;
1972 }
1973
4986965b 1974 crit_enter();
a3dd34d2 1975 ifnet_serialize_all(ifp);
984263bc 1976 LIST_REMOVE(ifma, ifma_link);
2038fb68 1977 ifp->if_ioctl(ifp, SIOCDELMULTI, 0, NULL);
a3dd34d2 1978 ifnet_deserialize_all(ifp);
4986965b 1979 crit_exit();
efda3bd0
MD
1980 kfree(ifma->ifma_addr, M_IFMADDR);
1981 kfree(sa, M_IFMADDR);
1982 kfree(ifma, M_IFMADDR);
984263bc
MD
1983
1984 return 0;
1985}
1986
3976c93a
RP
1987/*
1988 * Delete all multicast group membership for an interface.
1989 * Should be used to quickly flush all multicast filters.
1990 */
1991void
1992if_delallmulti(struct ifnet *ifp)
1993{
1994 struct ifmultiaddr *ifma;
1995 struct ifmultiaddr *next;
1996
1997 LIST_FOREACH_MUTABLE(ifma, &ifp->if_multiaddrs, ifma_link, next)
1998 if_delmulti(ifp, ifma->ifma_addr);
1999}
2000
2001
984263bc
MD
2002/*
2003 * Set the link layer address on an interface.
2004 *
2005 * At this time we only support certain types of interfaces,
2006 * and we don't allow the length of the address to change.
2007 */
2008int
2009if_setlladdr(struct ifnet *ifp, const u_char *lladdr, int len)
2010{
2011 struct sockaddr_dl *sdl;
984263bc
MD
2012 struct ifreq ifr;
2013
f2682cb9 2014 sdl = IF_LLSOCKADDR(ifp);
984263bc
MD
2015 if (sdl == NULL)
2016 return (EINVAL);
2017 if (len != sdl->sdl_alen) /* don't allow length to change */
2018 return (EINVAL);
2019 switch (ifp->if_type) {
2020 case IFT_ETHER: /* these types use struct arpcom */
984263bc 2021 case IFT_XETHER:
984263bc
MD
2022 case IFT_L2VLAN:
2023 bcopy(lladdr, ((struct arpcom *)ifp->if_softc)->ac_enaddr, len);
984263bc
MD
2024 bcopy(lladdr, LLADDR(sdl), len);
2025 break;
2026 default:
2027 return (ENODEV);
2028 }
2029 /*
2030 * If the interface is already up, we need
2031 * to re-init it in order to reprogram its
2032 * address filter.
2033 */
a3dd34d2 2034 ifnet_serialize_all(ifp);
984263bc 2035 if ((ifp->if_flags & IFF_UP) != 0) {
b2632176
SZ
2036 struct ifaddr_container *ifac;
2037
984263bc
MD
2038 ifp->if_flags &= ~IFF_UP;
2039 ifr.ifr_flags = ifp->if_flags;
46f25451 2040 ifr.ifr_flagshigh = ifp->if_flags >> 16;
78195a76 2041 ifp->if_ioctl(ifp, SIOCSIFFLAGS, (caddr_t)&ifr,
2038fb68 2042 NULL);
984263bc
MD
2043 ifp->if_flags |= IFF_UP;
2044 ifr.ifr_flags = ifp->if_flags;
46f25451 2045 ifr.ifr_flagshigh = ifp->if_flags >> 16;
78195a76 2046 ifp->if_ioctl(ifp, SIOCSIFFLAGS, (caddr_t)&ifr,
2038fb68 2047 NULL);
984263bc
MD
2048#ifdef INET
2049 /*
2050 * Also send gratuitous ARPs to notify other nodes about
2051 * the address change.
2052 */
b2632176
SZ
2053 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
2054 struct ifaddr *ifa = ifac->ifa;
2055
984263bc
MD
2056 if (ifa->ifa_addr != NULL &&
2057 ifa->ifa_addr->sa_family == AF_INET)
2058 arp_ifinit(ifp, ifa);
2059 }
2060#endif
2061 }
a3dd34d2 2062 ifnet_deserialize_all(ifp);
984263bc
MD
2063 return (0);
2064}
2065
2066struct ifmultiaddr *
f23061d4 2067ifmaof_ifpforaddr(struct sockaddr *sa, struct ifnet *ifp)
984263bc
MD
2068{
2069 struct ifmultiaddr *ifma;
2070
2071 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
0c3c561c 2072 if (sa_equal(ifma->ifma_addr, sa))
984263bc
MD
2073 break;
2074
2075 return ifma;
2076}
2077
e9bd1548
MD
2078/*
2079 * This function locates the first real ethernet MAC from a network
2080 * card and loads it into node, returning 0 on success or ENOENT if
2081 * no suitable interfaces were found. It is used by the uuid code to
2082 * generate a unique 6-byte number.
2083 */
2084int
2085if_getanyethermac(uint16_t *node, int minlen)
2086{
2087 struct ifnet *ifp;
2088 struct sockaddr_dl *sdl;
2089
2090 TAILQ_FOREACH(ifp, &ifnet, if_link) {
2091 if (ifp->if_type != IFT_ETHER)
2092 continue;
2093 sdl = IF_LLSOCKADDR(ifp);
2094 if (sdl->sdl_alen < minlen)
2095 continue;
2096 bcopy(((struct arpcom *)ifp->if_softc)->ac_enaddr, node,
2097 minlen);
2098 return(0);
2099 }
2100 return (ENOENT);
2101}
2102
1550dfd9
MD
2103/*
2104 * The name argument must be a pointer to storage which will last as
2105 * long as the interface does. For physical devices, the result of
2106 * device_get_name(dev) is a good choice and for pseudo-devices a
2107 * static string works well.
2108 */
2109void
2110if_initname(struct ifnet *ifp, const char *name, int unit)
2111{
3e4a09e7
MD
2112 ifp->if_dname = name;
2113 ifp->if_dunit = unit;
1550dfd9 2114 if (unit != IF_DUNIT_NONE)
f8c7a42d 2115 ksnprintf(ifp->if_xname, IFNAMSIZ, "%s%d", name, unit);
1550dfd9
MD
2116 else
2117 strlcpy(ifp->if_xname, name, IFNAMSIZ);
2118}
2119
984263bc
MD
2120int
2121if_printf(struct ifnet *ifp, const char *fmt, ...)
2122{
e2565a42 2123 __va_list ap;
984263bc
MD
2124 int retval;
2125
4b1cf444 2126 retval = kprintf("%s: ", ifp->if_xname);
e2565a42 2127 __va_start(ap, fmt);
379210cb 2128 retval += kvprintf(fmt, ap);
e2565a42 2129 __va_end(ap);
984263bc
MD
2130 return (retval);
2131}
2132
cb80735c
RP
2133struct ifnet *
2134if_alloc(uint8_t type)
2135{
2136 struct ifnet *ifp;
2137
2138 ifp = kmalloc(sizeof(struct ifnet), M_IFNET, M_WAITOK|M_ZERO);
2139
2140 ifp->if_type = type;
2141
aeb3c11e
RP
2142 if (if_com_alloc[type] != NULL) {
2143 ifp->if_l2com = if_com_alloc[type](type, ifp);
2144 if (ifp->if_l2com == NULL) {
2145 kfree(ifp, M_IFNET);
2146 return (NULL);
2147 }
2148 }
cb80735c
RP
2149 return (ifp);
2150}
2151
2152void
2153if_free(struct ifnet *ifp)
2154{
2155 kfree(ifp, M_IFNET);
2156}
2157
b2f93efe
JS
2158void
2159ifq_set_classic(struct ifaltq *ifq)
2160{
2161 ifq->altq_enqueue = ifq_classic_enqueue;
2162 ifq->altq_dequeue = ifq_classic_dequeue;
2163 ifq->altq_request = ifq_classic_request;
2164}
2165
9db4b353 2166int
e3e4574a
JS
2167ifq_classic_enqueue(struct ifaltq *ifq, struct mbuf *m,
2168 struct altq_pktattr *pa __unused)
2169{
9db4b353 2170 logifq(enqueue, ifq);
e3e4574a
JS
2171 if (IF_QFULL(ifq)) {
2172 m_freem(m);
2173 return(ENOBUFS);
2174 } else {
2175 IF_ENQUEUE(ifq, m);
2176 return(0);
2177 }
2178}
2179
9db4b353 2180struct mbuf *
d2c71fa0 2181ifq_classic_dequeue(struct ifaltq *ifq, struct mbuf *mpolled, int op)
e3e4574a
JS
2182{
2183 struct mbuf *m;
2184
2185 switch (op) {
2186 case ALTDQ_POLL:
2187 IF_POLL(ifq, m);
2188 break;
2189 case ALTDQ_REMOVE:
9db4b353 2190 logifq(dequeue, ifq);
e3e4574a
JS
2191 IF_DEQUEUE(ifq, m);
2192 break;
2193 default:
2194 panic("unsupported ALTQ dequeue op: %d", op);
2195 }
d2c71fa0 2196 KKASSERT(mpolled == NULL || mpolled == m);
e3e4574a
JS
2197 return(m);
2198}
2199
9db4b353 2200int
e3e4574a
JS
2201ifq_classic_request(struct ifaltq *ifq, int req, void *arg)
2202{
2203 switch (req) {
2204 case ALTRQ_PURGE:
2205 IF_DRAIN(ifq);
2206 break;
2207 default:
3f625015 2208 panic("unsupported ALTQ request: %d", req);
e3e4574a 2209 }
e3e4574a
JS
2210 return(0);
2211}
b2632176 2212
9db4b353
SZ
2213int
2214ifq_dispatch(struct ifnet *ifp, struct mbuf *m, struct altq_pktattr *pa)
2215{
2216 struct ifaltq *ifq = &ifp->if_snd;
57dff79c
SZ
2217 int running = 0, error, start = 0;
2218
2c9effcf 2219 ASSERT_IFNET_NOT_SERIALIZED_TX(ifp);
9db4b353
SZ
2220
2221 ALTQ_LOCK(ifq);
2222 error = ifq_enqueue_locked(ifq, m, pa);
2223 if (error) {
2224 ALTQ_UNLOCK(ifq);
2225 return error;
2226 }
2227 if (!ifq->altq_started) {
2228 /*
2229 * Hold the interlock of ifnet.if_start
2230 */
2231 ifq->altq_started = 1;
2232 start = 1;
2233 }
2234 ALTQ_UNLOCK(ifq);
2235
2236 ifp->if_obytes += m->m_pkthdr.len;
2237 if (m->m_flags & M_MCAST)
2238 ifp->if_omcasts++;
2239
2240 if (!start) {
2241 logifstart(avoid, ifp);
2242 return 0;
2243 }
2244
2245 if (ifq_dispatch_schedonly) {
2246 /*
2247 * Always schedule ifnet.if_start on ifnet's CPU,
2248 * short circuit the rest of this function.
2249 */
2250 logifstart(sched, ifp);
2251 if_start_schedule(ifp);
2252 return 0;
2253 }
2254
2255 /*
2256 * Try to do direct ifnet.if_start first, if there is
2257 * contention on ifnet's serializer, ifnet.if_start will
2258 * be scheduled on ifnet's CPU.
2259 */
a3dd34d2 2260 if (!ifnet_tryserialize_tx(ifp)) {
57dff79c
SZ
2261 /*
2262 * ifnet serializer contention happened,
2263 * ifnet.if_start is scheduled on ifnet's
2264 * CPU, and we keep going.
2265 */
2266 logifstart(contend_sched, ifp);
2267 if_start_schedule(ifp);
2268 return 0;
9db4b353
SZ
2269 }
2270
2271 if ((ifp->if_flags & IFF_OACTIVE) == 0) {
2272 logifstart(run, ifp);
2273 ifp->if_start(ifp);
2274 if ((ifp->if_flags &
57dff79c 2275 (IFF_OACTIVE | IFF_RUNNING)) == IFF_RUNNING)
9db4b353
SZ
2276 running = 1;
2277 }
2278
a3dd34d2 2279 ifnet_deserialize_tx(ifp);
9db4b353
SZ
2280
2281 if (ifq_dispatch_schednochk || if_start_need_schedule(ifq, running)) {
2282 /*
2283 * More data need to be transmitted, ifnet.if_start is
2284 * scheduled on ifnet's CPU, and we keep going.
2285 * NOTE: ifnet.if_start interlock is not released.
2286 */
2287 logifstart(sched, ifp);
2288 if_start_schedule(ifp);
2289 }
2290 return 0;
2291}
2292
b2632176
SZ
2293void *
2294ifa_create(int size, int flags)
2295{
2296 struct ifaddr *ifa;
2297 int i;
2298
2299 KASSERT(size >= sizeof(*ifa), ("ifaddr size too small\n"));
2300
2301 ifa = kmalloc(size, M_IFADDR, flags | M_ZERO);
2302 if (ifa == NULL)
2303 return NULL;
2304
2305 ifa->ifa_containers = kmalloc(ncpus * sizeof(struct ifaddr_container),
2306 M_IFADDR, M_WAITOK | M_ZERO);
d5a2b87c 2307 ifa->ifa_ncnt = ncpus;
b2632176
SZ
2308 for (i = 0; i < ncpus; ++i) {
2309 struct ifaddr_container *ifac = &ifa->ifa_containers[i];
2310
2311 ifac->ifa_magic = IFA_CONTAINER_MAGIC;
2312 ifac->ifa = ifa;
2313 ifac->ifa_refcnt = 1;
2314 }
2315#ifdef IFADDR_DEBUG
2316 kprintf("alloc ifa %p %d\n", ifa, size);
2317#endif
2318 return ifa;
2319}
2320
b2632176
SZ
2321void
2322ifac_free(struct ifaddr_container *ifac, int cpu_id)
2323{
d5a2b87c 2324 struct ifaddr *ifa = ifac->ifa;
b2632176
SZ
2325
2326 KKASSERT(ifac->ifa_magic == IFA_CONTAINER_MAGIC);
2327 KKASSERT(ifac->ifa_refcnt == 0);
40f667f2
SZ
2328 KASSERT(ifac->ifa_listmask == 0,
2329 ("ifa is still on %#x lists\n", ifac->ifa_listmask));
b2632176
SZ
2330
2331 ifac->ifa_magic = IFA_CONTAINER_DEAD;
2332
b2632176 2333#ifdef IFADDR_DEBUG_VERBOSE
8967ddc7 2334 kprintf("try free ifa %p cpu_id %d\n", ifac->ifa, cpu_id);
b2632176
SZ
2335#endif
2336
d5a2b87c
SZ
2337 KASSERT(ifa->ifa_ncnt > 0 && ifa->ifa_ncnt <= ncpus,
2338 ("invalid # of ifac, %d\n", ifa->ifa_ncnt));
2339 if (atomic_fetchadd_int(&ifa->ifa_ncnt, -1) == 1) {
2340#ifdef IFADDR_DEBUG
2341 kprintf("free ifa %p\n", ifa);
2342#endif
2343 kfree(ifa->ifa_containers, M_IFADDR);
2344 kfree(ifa, M_IFADDR);
2345 }
b2632176
SZ
2346}
2347
2348static void
2349ifa_iflink_dispatch(struct netmsg *nmsg)
2350{
2351 struct netmsg_ifaddr *msg = (struct netmsg_ifaddr *)nmsg;
2352 struct ifaddr *ifa = msg->ifa;
2353 struct ifnet *ifp = msg->ifp;
2354 int cpu = mycpuid;
40f667f2 2355 struct ifaddr_container *ifac;
b2632176
SZ
2356
2357 crit_enter();
23027d35 2358
40f667f2 2359 ifac = &ifa->ifa_containers[cpu];
2adb7bc2 2360 ASSERT_IFAC_VALID(ifac);
40f667f2
SZ
2361 KASSERT((ifac->ifa_listmask & IFA_LIST_IFADDRHEAD) == 0,
2362 ("ifaddr is on if_addrheads\n"));
23027d35 2363
40f667f2
SZ
2364 ifac->ifa_listmask |= IFA_LIST_IFADDRHEAD;
2365 if (msg->tail)
2366 TAILQ_INSERT_TAIL(&ifp->if_addrheads[cpu], ifac, ifa_link);
2367 else
2368 TAILQ_INSERT_HEAD(&ifp->if_addrheads[cpu], ifac, ifa_link);
23027d35 2369
b2632176
SZ
2370 crit_exit();
2371
2372 ifa_forwardmsg(&nmsg->nm_lmsg, cpu + 1);
2373}
2374
2375void
2376ifa_iflink(struct ifaddr *ifa, struct ifnet *ifp, int tail)
2377{
2378 struct netmsg_ifaddr msg;
2379
48e7b118
MD
2380 netmsg_init(&msg.netmsg, NULL, &curthread->td_msgport,
2381 0, ifa_iflink_dispatch);
b2632176
SZ
2382 msg.ifa = ifa;
2383 msg.ifp = ifp;
2384 msg.tail = tail;
2385
45e6dc84 2386 ifa_domsg(&msg.netmsg.nm_lmsg, 0);
b2632176
SZ
2387}
2388
2389static void
2390ifa_ifunlink_dispatch(struct netmsg *nmsg)
2391{
2392 struct netmsg_ifaddr *msg = (struct netmsg_ifaddr *)nmsg;
2393 struct ifaddr *ifa = msg->ifa;
2394 struct ifnet *ifp = msg->ifp;
2395 int cpu = mycpuid;
40f667f2 2396 struct ifaddr_container *ifac;
b2632176
SZ
2397
2398 crit_enter();
23027d35 2399
40f667f2 2400 ifac = &ifa->ifa_containers[cpu];
2adb7bc2 2401 ASSERT_IFAC_VALID(ifac);
40f667f2
SZ
2402 KASSERT(ifac->ifa_listmask & IFA_LIST_IFADDRHEAD,
2403 ("ifaddr is not on if_addrhead\n"));
23027d35 2404
40f667f2
SZ
2405 TAILQ_REMOVE(&ifp->if_addrheads[cpu], ifac, ifa_link);
2406 ifac->ifa_listmask &= ~IFA_LIST_IFADDRHEAD;
23027d35 2407
b2632176
SZ
2408 crit_exit();
2409
2410 ifa_forwardmsg(&nmsg->nm_lmsg, cpu + 1);
2411}
2412
2413void
2414ifa_ifunlink(struct ifaddr *ifa, struct ifnet *ifp)
2415{
2416 struct netmsg_ifaddr msg;
2417
48e7b118
MD
2418 netmsg_init(&msg.netmsg, NULL, &curthread->td_msgport,
2419 0, ifa_ifunlink_dispatch);
b2632176
SZ
2420 msg.ifa = ifa;
2421 msg.ifp = ifp;
2422
45e6dc84 2423 ifa_domsg(&msg.netmsg.nm_lmsg, 0);
b2632176
SZ
2424}
2425
2426static void
2427ifa_destroy_dispatch(struct netmsg *nmsg)
2428{
2429 struct netmsg_ifaddr *msg = (struct netmsg_ifaddr *)nmsg;
2430
2431 IFAFREE(msg->ifa);
2432 ifa_forwardmsg(&nmsg->nm_lmsg, mycpuid + 1);
2433}
2434
2435void
2436ifa_destroy(struct ifaddr *ifa)
2437{
2438 struct netmsg_ifaddr msg;
2439
48e7b118
MD
2440 netmsg_init(&msg.netmsg, NULL, &curthread->td_msgport,
2441 0, ifa_destroy_dispatch);
b2632176
SZ
2442 msg.ifa = ifa;
2443
45e6dc84 2444 ifa_domsg(&msg.netmsg.nm_lmsg, 0);
b2632176
SZ
2445}
2446
2447struct lwkt_port *
d7944f0b 2448ifnet_portfn(int cpu)
b2632176 2449{
90af4fd3 2450 return &ifnet_threads[cpu].td_msgport;
b2632176
SZ
2451}
2452
c4882b7e
SZ
2453void
2454ifnet_forwardmsg(struct lwkt_msg *lmsg, int next_cpu)
2455{
ea2e6532
SZ
2456 KKASSERT(next_cpu > mycpuid && next_cpu <= ncpus);
2457
c4882b7e
SZ
2458 if (next_cpu < ncpus)
2459 lwkt_forwardmsg(ifnet_portfn(next_cpu), lmsg);
2460 else
2461 lwkt_replymsg(lmsg, 0);
2462}
2463
2a3e1dbd 2464int
c4882b7e
SZ
2465ifnet_domsg(struct lwkt_msg *lmsg, int cpu)
2466{
2467 KKASSERT(cpu < ncpus);
2a3e1dbd 2468 return lwkt_domsg(ifnet_portfn(cpu), lmsg, 0);
c4882b7e
SZ
2469}
2470
8967ddc7
SZ
2471void
2472ifnet_sendmsg(struct lwkt_msg *lmsg, int cpu)
2473{
2474 KKASSERT(cpu < ncpus);
2475 lwkt_sendmsg(ifnet_portfn(cpu), lmsg);
2476}
2477
b2632176 2478static void
90af4fd3 2479ifnetinit(void *dummy __unused)
b2632176
SZ
2480{
2481 int i;
2482
2483 for (i = 0; i < ncpus; ++i) {
90af4fd3 2484 struct thread *thr = &ifnet_threads[i];
b2632176 2485
92db3805
SZ
2486 lwkt_create(netmsg_service_loop, &ifnet_mpsafe_thread, NULL,
2487 thr, TDF_NETWORK | TDF_MPSAFE, i, "ifnet %d", i);
b2632176
SZ
2488 netmsg_service_port_init(&thr->td_msgport);
2489 }
2490}
bd08b792
RP
2491
2492struct ifnet *
2493ifnet_byindex(unsigned short idx)
2494{
2495 if (idx > if_index)
2496 return NULL;
2497 return ifindex2ifnet[idx];
2498}
2499
2500struct ifaddr *
2501ifaddr_byindex(unsigned short idx)
2502{
2503 struct ifnet *ifp;
2504
2505 ifp = ifnet_byindex(idx);
ec27babc
RP
2506 if (!ifp)
2507 return NULL;
d79c4535 2508 return TAILQ_FIRST(&ifp->if_addrheads[mycpuid])->ifa;
bd08b792 2509}
aeb3c11e
RP
2510
2511void
2512if_register_com_alloc(u_char type,
2513 if_com_alloc_t *a, if_com_free_t *f)
2514{
2515
2516 KASSERT(if_com_alloc[type] == NULL,
2517 ("if_register_com_alloc: %d already registered", type));
2518 KASSERT(if_com_free[type] == NULL,
2519 ("if_register_com_alloc: %d free already registered", type));
2520
2521 if_com_alloc[type] = a;
2522 if_com_free[type] = f;
2523}
2524
2525void
2526if_deregister_com_alloc(u_char type)
2527{
2528
2529 KASSERT(if_com_alloc[type] != NULL,
2530 ("if_deregister_com_alloc: %d not registered", type));
2531 KASSERT(if_com_free[type] != NULL,
2532 ("if_deregister_com_alloc: %d free not registered", type));
2533 if_com_alloc[type] = NULL;
2534 if_com_free[type] = NULL;
2535}