Annotation of src/sys/net/if.c, Revision 1.145
1.145 ! itojun 1: /* $NetBSD: if.c,v 1.144 2004/07/27 12:22:59 yamt Exp $ */
1.53 thorpej 2:
3: /*-
1.89 thorpej 4: * Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
1.53 thorpej 5: * All rights reserved.
6: *
7: * This code is derived from software contributed to The NetBSD Foundation
8: * by William Studnemund and Jason R. Thorpe.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the NetBSD
21: * Foundation, Inc. and its contributors.
22: * 4. Neither the name of The NetBSD Foundation nor the names of its
23: * contributors may be used to endorse or promote products derived
24: * from this software without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36: * POSSIBILITY OF SUCH DAMAGE.
37: */
1.49 itojun 38:
39: /*
40: * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
41: * All rights reserved.
42: *
43: * Redistribution and use in source and binary forms, with or without
44: * modification, are permitted provided that the following conditions
45: * are met:
46: * 1. Redistributions of source code must retain the above copyright
47: * notice, this list of conditions and the following disclaimer.
48: * 2. Redistributions in binary form must reproduce the above copyright
49: * notice, this list of conditions and the following disclaimer in the
50: * documentation and/or other materials provided with the distribution.
51: * 3. Neither the name of the project nor the names of its contributors
52: * may be used to endorse or promote products derived from this software
53: * without specific prior written permission.
54: *
55: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
56: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
57: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
58: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
59: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
60: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
61: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
62: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
63: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
64: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65: * SUCH DAMAGE.
66: */
1.16 cgd 67:
1.1 cgd 68: /*
1.15 mycroft 69: * Copyright (c) 1980, 1986, 1993
70: * The Regents of the University of California. All rights reserved.
1.1 cgd 71: *
72: * Redistribution and use in source and binary forms, with or without
73: * modification, are permitted provided that the following conditions
74: * are met:
75: * 1. Redistributions of source code must retain the above copyright
76: * notice, this list of conditions and the following disclaimer.
77: * 2. Redistributions in binary form must reproduce the above copyright
78: * notice, this list of conditions and the following disclaimer in the
79: * documentation and/or other materials provided with the distribution.
1.126 agc 80: * 3. Neither the name of the University nor the names of its contributors
1.1 cgd 81: * may be used to endorse or promote products derived from this software
82: * without specific prior written permission.
83: *
84: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
85: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
86: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
87: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
88: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
89: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
90: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
91: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
92: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
93: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
94: * SUCH DAMAGE.
95: *
1.44 fvdl 96: * @(#)if.c 8.5 (Berkeley) 1/9/95
1.1 cgd 97: */
1.99 lukem 98:
99: #include <sys/cdefs.h>
1.145 ! itojun 100: __KERNEL_RCSID(0, "$NetBSD: if.c,v 1.144 2004/07/27 12:22:59 yamt Exp $");
1.50 thorpej 101:
102: #include "opt_inet.h"
1.46 thorpej 103:
104: #include "opt_compat_linux.h"
1.47 thorpej 105: #include "opt_compat_svr4.h"
1.119 christos 106: #include "opt_compat_ultrix.h"
1.48 christos 107: #include "opt_compat_43.h"
1.51 bouyer 108: #include "opt_atalk.h"
1.120 martin 109: #include "opt_ccitt.h"
110: #include "opt_natm.h"
1.87 thorpej 111: #include "opt_pfil_hooks.h"
1.1 cgd 112:
1.8 mycroft 113: #include <sys/param.h>
114: #include <sys/mbuf.h>
115: #include <sys/systm.h>
1.59 thorpej 116: #include <sys/callout.h>
1.15 mycroft 117: #include <sys/proc.h>
1.8 mycroft 118: #include <sys/socket.h>
119: #include <sys/socketvar.h>
1.56 thorpej 120: #include <sys/domain.h>
1.8 mycroft 121: #include <sys/protosw.h>
122: #include <sys/kernel.h>
123: #include <sys/ioctl.h>
1.133 jonathan 124: #include <sys/sysctl.h>
1.1 cgd 125:
1.8 mycroft 126: #include <net/if.h>
127: #include <net/if_dl.h>
1.66 onoe 128: #include <net/if_ether.h>
1.124 dyoung 129: #include <net/if_media.h>
1.132 dyoung 130: #include <net80211/ieee80211.h>
131: #include <net80211/ieee80211_ioctl.h>
1.8 mycroft 132: #include <net/if_types.h>
1.24 christos 133: #include <net/radix.h>
1.53 thorpej 134: #include <net/route.h>
1.95 itojun 135: #include <net/netisr.h>
1.51 bouyer 136: #ifdef NETATALK
137: #include <netatalk/at_extern.h>
138: #include <netatalk/at.h>
139: #endif
1.143 itojun 140: #include <net/pfil.h>
1.1 cgd 141:
1.49 itojun 142: #ifdef INET6
143: #include <netinet/in.h>
1.72 thorpej 144: #include <netinet6/in6_var.h>
1.108 itojun 145: #include <netinet6/nd6.h>
1.49 itojun 146: #endif
1.117 thorpej 147:
148: MALLOC_DEFINE(M_IFADDR, "ifaddr", "interface address");
149: MALLOC_DEFINE(M_IFMADDR, "ether_multi", "link-level multicast address");
1.49 itojun 150:
1.1 cgd 151: int ifqmaxlen = IFQ_MAXLEN;
1.59 thorpej 152: struct callout if_slowtimo_ch;
1.49 itojun 153:
1.104 matt 154: int netisr; /* scheduling bits for network */
155:
156: int if_rt_walktree __P((struct radix_node *, void *));
1.53 thorpej 157:
1.63 thorpej 158: struct if_clone *if_clone_lookup __P((const char *, int *));
1.67 thorpej 159: int if_clone_list __P((struct if_clonereq *));
1.63 thorpej 160:
161: LIST_HEAD(, if_clone) if_cloners = LIST_HEAD_INITIALIZER(if_cloners);
1.67 thorpej 162: int if_cloners_count;
1.63 thorpej 163:
1.143 itojun 164: #ifdef PFIL_HOOKS
165: struct pfil_head if_pfil; /* packet filtering hook for interfaces */
166: #endif
167:
1.101 abs 168: #if defined(INET) || defined(INET6) || defined(NETATALK) || defined(NS) || \
169: defined(ISO) || defined(CCITT) || defined(NATM)
1.95 itojun 170: static void if_detach_queues __P((struct ifnet *, struct ifqueue *));
1.101 abs 171: #endif
1.95 itojun 172:
1.1 cgd 173: /*
174: * Network interface utility routines.
175: *
176: * Routines with ifa_ifwith* names take sockaddr *'s as
177: * parameters.
178: */
1.4 andrew 179: void
1.1 cgd 180: ifinit()
181: {
182:
1.59 thorpej 183: callout_init(&if_slowtimo_ch);
1.4 andrew 184: if_slowtimo(NULL);
1.143 itojun 185: #ifdef PFIL_HOOKS
186: if_pfil.ph_type = PFIL_TYPE_IFNET;
187: if_pfil.ph_ifnet = NULL;
188: if (pfil_head_register(&if_pfil) != 0)
189: printf("WARNING: unable to register pfil hook\n");
190: #endif
1.1 cgd 191: }
192:
1.53 thorpej 193: /*
194: * Null routines used while an interface is going away. These routines
195: * just return an error.
196: */
197:
198: int
199: if_nulloutput(ifp, m, so, rt)
200: struct ifnet *ifp;
201: struct mbuf *m;
202: struct sockaddr *so;
203: struct rtentry *rt;
204: {
205:
206: return (ENXIO);
207: }
208:
209: void
210: if_nullinput(ifp, m)
211: struct ifnet *ifp;
212: struct mbuf *m;
213: {
214:
215: /* Nothing. */
216: }
217:
218: void
219: if_nullstart(ifp)
220: struct ifnet *ifp;
221: {
222:
223: /* Nothing. */
224: }
225:
226: int
227: if_nullioctl(ifp, cmd, data)
228: struct ifnet *ifp;
229: u_long cmd;
230: caddr_t data;
231: {
232:
233: return (ENXIO);
234: }
235:
236: int
1.75 thorpej 237: if_nullinit(ifp)
1.53 thorpej 238: struct ifnet *ifp;
239: {
240:
241: return (ENXIO);
242: }
243:
244: void
1.75 thorpej 245: if_nullstop(ifp, disable)
246: struct ifnet *ifp;
247: int disable;
248: {
249:
250: /* Nothing. */
251: }
252:
253: void
1.53 thorpej 254: if_nullwatchdog(ifp)
255: struct ifnet *ifp;
256: {
257:
258: /* Nothing. */
259: }
260:
261: void
262: if_nulldrain(ifp)
263: struct ifnet *ifp;
264: {
265:
266: /* Nothing. */
267: }
268:
1.137 itojun 269: static u_int if_index = 1;
1.103 simonb 270: struct ifnet_head ifnet;
1.137 itojun 271: size_t if_indexlim = 0;
1.49 itojun 272: struct ifaddr **ifnet_addrs = NULL;
273: struct ifnet **ifindex2ifnet = NULL;
1.1 cgd 274:
275: /*
1.81 thorpej 276: * Allocate the link level name for the specified interface. This
277: * is an attachment helper. It must be called after ifp->if_addrlen
278: * is initialized, which may not be the case when if_attach() is
279: * called.
280: */
281: void
282: if_alloc_sadl(struct ifnet *ifp)
283: {
284: unsigned socksize, ifasize;
285: int namelen, masklen;
286: struct sockaddr_dl *sdl;
287: struct ifaddr *ifa;
1.84 thorpej 288:
289: /*
290: * If the interface already has a link name, release it
291: * now. This is useful for interfaces that can change
292: * link types, and thus switch link names often.
293: */
294: if (ifp->if_sadl != NULL)
295: if_free_sadl(ifp);
1.81 thorpej 296:
297: namelen = strlen(ifp->if_xname);
298: masklen = offsetof(struct sockaddr_dl, sdl_data[0]) + namelen;
299: socksize = masklen + ifp->if_addrlen;
300: #define ROUNDUP(a) (1 + (((a) - 1) | (sizeof(long) - 1)))
301: if (socksize < sizeof(*sdl))
302: socksize = sizeof(*sdl);
303: socksize = ROUNDUP(socksize);
304: ifasize = sizeof(*ifa) + 2 * socksize;
305: ifa = (struct ifaddr *)malloc(ifasize, M_IFADDR, M_WAITOK);
1.92 thorpej 306: memset((caddr_t)ifa, 0, ifasize);
1.81 thorpej 307: sdl = (struct sockaddr_dl *)(ifa + 1);
308: sdl->sdl_len = socksize;
309: sdl->sdl_family = AF_LINK;
310: bcopy(ifp->if_xname, sdl->sdl_data, namelen);
311: sdl->sdl_nlen = namelen;
1.83 itojun 312: sdl->sdl_alen = ifp->if_addrlen;
1.81 thorpej 313: sdl->sdl_index = ifp->if_index;
314: sdl->sdl_type = ifp->if_type;
315: ifnet_addrs[ifp->if_index] = ifa;
316: IFAREF(ifa);
317: ifa->ifa_ifp = ifp;
318: ifa->ifa_rtrequest = link_rtrequest;
319: TAILQ_INSERT_HEAD(&ifp->if_addrlist, ifa, ifa_list);
320: IFAREF(ifa);
321: ifa->ifa_addr = (struct sockaddr *)sdl;
322: ifp->if_sadl = sdl;
323: sdl = (struct sockaddr_dl *)(socksize + (caddr_t)sdl);
324: ifa->ifa_netmask = (struct sockaddr *)sdl;
325: sdl->sdl_len = masklen;
326: while (namelen != 0)
327: sdl->sdl_data[--namelen] = 0xff;
328: }
329:
330: /*
331: * Free the link level name for the specified interface. This is
332: * a detach helper. This is called from if_detach() or from
333: * link layer type specific detach functions.
334: */
335: void
336: if_free_sadl(struct ifnet *ifp)
337: {
338: struct ifaddr *ifa;
339: int s;
340:
341: ifa = ifnet_addrs[ifp->if_index];
342: if (ifa == NULL) {
343: KASSERT(ifp->if_sadl == NULL);
344: return;
345: }
346:
347: KASSERT(ifp->if_sadl != NULL);
348:
1.88 thorpej 349: s = splnet();
1.81 thorpej 350: rtinit(ifa, RTM_DELETE, 0);
351: TAILQ_REMOVE(&ifp->if_addrlist, ifa, ifa_list);
352: IFAFREE(ifa);
353:
354: ifp->if_sadl = NULL;
355:
356: ifnet_addrs[ifp->if_index] = NULL;
357: IFAFREE(ifa);
358: splx(s);
359: }
360:
361: /*
1.1 cgd 362: * Attach an interface to the
363: * list of "active" interfaces.
364: */
1.15 mycroft 365: void
1.1 cgd 366: if_attach(ifp)
367: struct ifnet *ifp;
368: {
1.102 atatat 369: int indexlim = 0;
1.1 cgd 370:
1.102 atatat 371: if (if_indexlim == 0) {
1.22 mycroft 372: TAILQ_INIT(&ifnet);
1.102 atatat 373: if_indexlim = 8;
374: }
1.22 mycroft 375: TAILQ_INIT(&ifp->if_addrlist);
1.21 mycroft 376: TAILQ_INSERT_TAIL(&ifnet, ifp, if_list);
1.102 atatat 377: ifp->if_index = if_index;
378: if (ifindex2ifnet == 0)
379: if_index++;
380: else
1.131 itojun 381: while (ifp->if_index < if_indexlim &&
382: ifindex2ifnet[ifp->if_index] != NULL) {
1.102 atatat 383: ++if_index;
384: if (if_index == 0)
385: if_index = 1;
386: /*
387: * If we hit USHRT_MAX, we skip back to 0 since
388: * there are a number of places where the value
389: * of if_index or if_index itself is compared
1.111 itojun 390: * to or stored in an unsigned short. By
1.102 atatat 391: * jumping back, we won't botch those assignments
392: * or comparisons.
393: */
394: else if (if_index == USHRT_MAX) {
395: /*
396: * However, if we have to jump back to
397: * zero *twice* without finding an empty
398: * slot in ifindex2ifnet[], then there
399: * there are too many (>65535) interfaces.
400: */
401: if (indexlim++)
402: panic("too many interfaces");
403: else
404: if_index = 1;
405: }
406: ifp->if_index = if_index;
407: }
1.49 itojun 408:
409: /*
410: * We have some arrays that should be indexed by if_index.
411: * since if_index will grow dynamically, they should grow too.
412: * struct ifadd **ifnet_addrs
413: * struct ifnet **ifindex2ifnet
414: */
1.53 thorpej 415: if (ifnet_addrs == 0 || ifindex2ifnet == 0 ||
416: ifp->if_index >= if_indexlim) {
1.131 itojun 417: size_t m, n, oldlim;
1.49 itojun 418: caddr_t q;
419:
1.131 itojun 420: oldlim = if_indexlim;
1.53 thorpej 421: while (ifp->if_index >= if_indexlim)
1.49 itojun 422: if_indexlim <<= 1;
423:
424: /* grow ifnet_addrs */
1.131 itojun 425: m = oldlim * sizeof(struct ifaddr *);
1.81 thorpej 426: n = if_indexlim * sizeof(struct ifaddr *);
1.49 itojun 427: q = (caddr_t)malloc(n, M_IFADDR, M_WAITOK);
1.92 thorpej 428: memset(q, 0, n);
1.1 cgd 429: if (ifnet_addrs) {
1.131 itojun 430: bcopy((caddr_t)ifnet_addrs, q, m);
1.1 cgd 431: free((caddr_t)ifnet_addrs, M_IFADDR);
432: }
1.49 itojun 433: ifnet_addrs = (struct ifaddr **)q;
434:
435: /* grow ifindex2ifnet */
1.131 itojun 436: m = oldlim * sizeof(struct ifnet *);
1.49 itojun 437: n = if_indexlim * sizeof(struct ifnet *);
438: q = (caddr_t)malloc(n, M_IFADDR, M_WAITOK);
1.92 thorpej 439: memset(q, 0, n);
1.49 itojun 440: if (ifindex2ifnet) {
1.131 itojun 441: bcopy((caddr_t)ifindex2ifnet, q, m);
1.49 itojun 442: free((caddr_t)ifindex2ifnet, M_IFADDR);
443: }
444: ifindex2ifnet = (struct ifnet **)q;
1.1 cgd 445: }
1.49 itojun 446:
1.53 thorpej 447: ifindex2ifnet[ifp->if_index] = ifp;
1.49 itojun 448:
1.1 cgd 449: /*
1.81 thorpej 450: * Link level name is allocated later by a separate call to
451: * if_alloc_sadl().
1.1 cgd 452: */
1.81 thorpej 453:
1.40 thorpej 454: if (ifp->if_snd.ifq_maxlen == 0)
1.94 itojun 455: ifp->if_snd.ifq_maxlen = ifqmaxlen;
1.42 is 456: ifp->if_broadcastaddr = 0; /* reliably crash if used uninitialized */
1.57 thorpej 457:
458: ifp->if_link_state = LINK_STATE_UNKNOWN;
459:
1.89 thorpej 460: ifp->if_capenable = 0;
1.97 thorpej 461: ifp->if_csum_flags_tx = 0;
462: ifp->if_csum_flags_rx = 0;
1.89 thorpej 463:
1.86 thorpej 464: #ifdef ALTQ
465: ifp->if_snd.altq_type = 0;
466: ifp->if_snd.altq_disc = NULL;
467: ifp->if_snd.altq_flags &= ALTQF_CANTCHANGE;
468: ifp->if_snd.altq_tbr = NULL;
469: ifp->if_snd.altq_ifp = ifp;
470: #endif
471:
1.87 thorpej 472: #ifdef PFIL_HOOKS
473: ifp->if_pfil.ph_type = PFIL_TYPE_IFNET;
474: ifp->if_pfil.ph_ifnet = ifp;
475: if (pfil_head_register(&ifp->if_pfil) != 0)
476: printf("%s: WARNING: unable to register pfil hook\n",
477: ifp->if_xname);
1.144 yamt 478: (void)pfil_run_hooks(&if_pfil,
479: (struct mbuf **)PFIL_IFNET_ATTACH, ifp, PFIL_IFNET);
1.87 thorpej 480: #endif
481:
1.107 itojun 482: /* Announce the interface. */
483: rt_ifannouncemsg(ifp, IFAN_ARRIVAL);
484: }
485:
486: void
487: if_attachdomain()
488: {
489: struct ifnet *ifp;
1.110 itojun 490: int s;
1.107 itojun 491:
1.110 itojun 492: s = splnet();
1.107 itojun 493: for (ifp = TAILQ_FIRST(&ifnet); ifp; ifp = TAILQ_NEXT(ifp, if_list))
494: if_attachdomain1(ifp);
1.110 itojun 495: splx(s);
1.107 itojun 496: }
497:
498: void
499: if_attachdomain1(ifp)
500: struct ifnet *ifp;
501: {
502: struct domain *dp;
1.109 itojun 503: int s;
504:
505: s = splnet();
1.107 itojun 506:
1.106 itojun 507: /* address family dependent data region */
508: memset(ifp->if_afdata, 0, sizeof(ifp->if_afdata));
509: for (dp = domains; dp; dp = dp->dom_next) {
510: if (dp->dom_ifattach)
511: ifp->if_afdata[dp->dom_family] =
512: (*dp->dom_ifattach)(ifp);
513: }
1.109 itojun 514:
515: splx(s);
1.1 cgd 516: }
1.53 thorpej 517:
518: /*
519: * Deactivate an interface. This points all of the procedure
520: * handles at error stubs. May be called from interrupt context.
521: */
522: void
523: if_deactivate(ifp)
524: struct ifnet *ifp;
525: {
526: int s;
527:
1.88 thorpej 528: s = splnet();
1.53 thorpej 529:
530: ifp->if_output = if_nulloutput;
531: ifp->if_input = if_nullinput;
532: ifp->if_start = if_nullstart;
533: ifp->if_ioctl = if_nullioctl;
1.75 thorpej 534: ifp->if_init = if_nullinit;
535: ifp->if_stop = if_nullstop;
1.53 thorpej 536: ifp->if_watchdog = if_nullwatchdog;
537: ifp->if_drain = if_nulldrain;
538:
539: /* No more packets may be enqueued. */
540: ifp->if_snd.ifq_maxlen = 0;
541:
542: splx(s);
543: }
544:
545: /*
546: * Detach an interface from the list of "active" interfaces,
547: * freeing any resources as we go along.
548: *
549: * NOTE: This routine must be called with a valid thread context,
550: * as it may block.
551: */
552: void
553: if_detach(ifp)
554: struct ifnet *ifp;
555: {
1.56 thorpej 556: struct socket so;
1.134 drochner 557: struct ifaddr *ifa, **ifap;
1.53 thorpej 558: #ifdef IFAREF_DEBUG
559: struct ifaddr *last_ifa = NULL;
560: #endif
1.56 thorpej 561: struct domain *dp;
1.141 matt 562: const struct protosw *pr;
1.53 thorpej 563: struct radix_node_head *rnh;
1.56 thorpej 564: int s, i, family, purged;
1.53 thorpej 565:
1.56 thorpej 566: /*
567: * XXX It's kind of lame that we have to have the
568: * XXX socket structure...
569: */
570: memset(&so, 0, sizeof(so));
1.53 thorpej 571:
1.88 thorpej 572: s = splnet();
1.53 thorpej 573:
574: /*
575: * Do an if_down() to give protocols a chance to do something.
576: */
577: if_down(ifp);
1.86 thorpej 578:
579: #ifdef ALTQ
580: if (ALTQ_IS_ENABLED(&ifp->if_snd))
581: altq_disable(&ifp->if_snd);
582: if (ALTQ_IS_ATTACHED(&ifp->if_snd))
583: altq_detach(&ifp->if_snd);
1.87 thorpej 584: #endif
585:
586: #ifdef PFIL_HOOKS
1.144 yamt 587: (void)pfil_run_hooks(&if_pfil,
588: (struct mbuf **)PFIL_IFNET_DETACH, ifp, PFIL_IFNET);
589: (void)pfil_head_unregister(&ifp->if_pfil);
1.86 thorpej 590: #endif
1.53 thorpej 591:
592: /*
593: * Rip all the addresses off the interface. This should make
594: * all of the routes go away.
595: */
1.134 drochner 596: ifap = &TAILQ_FIRST(&ifp->if_addrlist); /* XXX abstraction violation */
597: while ((ifa = *ifap)) {
1.56 thorpej 598: family = ifa->ifa_addr->sa_family;
1.53 thorpej 599: #ifdef IFAREF_DEBUG
600: printf("if_detach: ifaddr %p, family %d, refcnt %d\n",
1.56 thorpej 601: ifa, family, ifa->ifa_refcnt);
1.53 thorpej 602: if (last_ifa != NULL && ifa == last_ifa)
1.56 thorpej 603: panic("if_detach: loop detected");
1.53 thorpej 604: last_ifa = ifa;
605: #endif
1.134 drochner 606: if (family == AF_LINK) {
607: ifap = &TAILQ_NEXT(ifa, ifa_list);
1.118 itojun 608: continue;
1.134 drochner 609: }
1.118 itojun 610: dp = pffinddomain(family);
1.56 thorpej 611: #ifdef DIAGNOSTIC
1.118 itojun 612: if (dp == NULL)
613: panic("if_detach: no domain for AF %d",
614: family);
1.56 thorpej 615: #endif
1.118 itojun 616: purged = 0;
617: for (pr = dp->dom_protosw;
618: pr < dp->dom_protoswNPROTOSW; pr++) {
619: so.so_proto = pr;
620: if (pr->pr_usrreq != NULL) {
621: (void) (*pr->pr_usrreq)(&so,
622: PRU_PURGEIF, NULL, NULL,
1.123 fvdl 623: (struct mbuf *) ifp, curproc);
1.118 itojun 624: purged = 1;
1.53 thorpej 625: }
1.118 itojun 626: }
627: if (purged == 0) {
628: /*
629: * XXX What's really the best thing to do
1.135 keihan 630: * XXX here? --thorpej@NetBSD.org
1.118 itojun 631: */
632: printf("if_detach: WARNING: AF %d not purged\n",
633: family);
1.134 drochner 634: TAILQ_REMOVE(&ifp->if_addrlist, ifa, ifa_list);
1.53 thorpej 635: }
636: }
1.118 itojun 637:
638: if_free_sadl(ifp);
1.53 thorpej 639:
640: /* Walk the routing table looking for straglers. */
1.54 thorpej 641: for (i = 0; i <= AF_MAX; i++) {
642: if ((rnh = rt_tables[i]) != NULL)
643: (void) (*rnh->rnh_walktree)(rnh, if_rt_walktree, ifp);
1.106 itojun 644: }
645:
646: for (dp = domains; dp; dp = dp->dom_next) {
647: if (dp->dom_ifdetach && ifp->if_afdata[dp->dom_family])
648: (*dp->dom_ifdetach)(ifp,
649: ifp->if_afdata[dp->dom_family]);
1.53 thorpej 650: }
1.57 thorpej 651:
652: /* Announce that the interface is gone. */
653: rt_ifannouncemsg(ifp, IFAN_DEPARTURE);
1.93 itojun 654:
655: ifindex2ifnet[ifp->if_index] = NULL;
1.53 thorpej 656:
657: TAILQ_REMOVE(&ifnet, ifp, if_list);
658:
1.95 itojun 659: /*
660: * remove packets came from ifp, from software interrupt queues.
661: * net/netisr_dispatch.h is not usable, as some of them use
662: * strange queue names.
663: */
664: #define IF_DETACH_QUEUES(x) \
665: do { \
666: extern struct ifqueue x; \
667: if_detach_queues(ifp, & x); \
1.116 perry 668: } while (/*CONSTCOND*/ 0)
1.95 itojun 669: #ifdef INET
670: #if NARP > 0
671: IF_DETACH_QUEUES(arpintrq);
672: #endif
673: IF_DETACH_QUEUES(ipintrq);
674: #endif
675: #ifdef INET6
676: IF_DETACH_QUEUES(ip6intrq);
677: #endif
678: #ifdef NETATALK
679: IF_DETACH_QUEUES(atintrq1);
680: IF_DETACH_QUEUES(atintrq2);
681: #endif
682: #ifdef NS
683: IF_DETACH_QUEUES(nsintrq);
684: #endif
685: #ifdef ISO
686: IF_DETACH_QUEUES(clnlintrq);
687: #endif
688: #ifdef CCITT
689: IF_DETACH_QUEUES(llcintrq);
690: IF_DETACH_QUEUES(hdintrq);
691: #endif
692: #ifdef NATM
693: IF_DETACH_QUEUES(natmintrq);
694: #endif
1.125 itojun 695: #ifdef DECNET
696: IF_DETACH_QUEUES(decnetintrq);
697: #endif
1.95 itojun 698: #undef IF_DETACH_QUEUES
699:
1.53 thorpej 700: splx(s);
1.95 itojun 701: }
702:
1.100 augustss 703: #if defined(INET) || defined(INET6) || defined(NETATALK) || defined(NS) || \
1.125 itojun 704: defined(ISO) || defined(CCITT) || defined(NATM) || defined(DECNET)
1.95 itojun 705: static void
706: if_detach_queues(ifp, q)
707: struct ifnet *ifp;
708: struct ifqueue *q;
709: {
710: struct mbuf *m, *prev, *next;
711:
712: prev = NULL;
1.96 itojun 713: for (m = q->ifq_head; m; m = next) {
1.95 itojun 714: next = m->m_nextpkt;
715: #ifdef DIAGNOSTIC
1.96 itojun 716: if ((m->m_flags & M_PKTHDR) == 0) {
717: prev = m;
1.95 itojun 718: continue;
1.96 itojun 719: }
1.95 itojun 720: #endif
1.96 itojun 721: if (m->m_pkthdr.rcvif != ifp) {
722: prev = m;
1.95 itojun 723: continue;
1.96 itojun 724: }
1.95 itojun 725:
726: if (prev)
727: prev->m_nextpkt = m->m_nextpkt;
728: else
729: q->ifq_head = m->m_nextpkt;
730: if (q->ifq_tail == m)
731: q->ifq_tail = prev;
732: q->ifq_len--;
733:
734: m->m_nextpkt = NULL;
735: m_freem(m);
736: IF_DROP(q);
737: }
1.53 thorpej 738: }
1.100 augustss 739: #endif /* defined(INET) || ... */
1.53 thorpej 740:
741: /*
742: * Callback for a radix tree walk to delete all references to an
743: * ifnet.
744: */
745: int
746: if_rt_walktree(rn, v)
747: struct radix_node *rn;
748: void *v;
749: {
1.55 itojun 750: struct ifnet *ifp = (struct ifnet *)v;
1.53 thorpej 751: struct rtentry *rt = (struct rtentry *)rn;
752: int error;
753:
754: if (rt->rt_ifp == ifp) {
755: /* Delete the entry. */
756: error = rtrequest(RTM_DELETE, rt_key(rt), rt->rt_gateway,
757: rt_mask(rt), rt->rt_flags, NULL);
758: if (error)
759: printf("%s: warning: unable to delete rtentry @ %p, "
760: "error = %d\n", ifp->if_xname, rt, error);
761: }
762: return (0);
763: }
764:
1.1 cgd 765: /*
1.63 thorpej 766: * Create a clone network interface.
767: */
768: int
769: if_clone_create(name)
770: const char *name;
771: {
772: struct if_clone *ifc;
1.145 ! itojun 773: struct ifnet *ifp;
1.63 thorpej 774: int unit;
1.145 ! itojun 775: int error;
! 776: int s;
1.63 thorpej 777:
778: ifc = if_clone_lookup(name, &unit);
779: if (ifc == NULL)
780: return (EINVAL);
781:
782: if (ifunit(name) != NULL)
783: return (EEXIST);
784:
1.145 ! itojun 785: error = (*ifc->ifc_create)(ifc, unit);
! 786: if (error)
! 787: return (error);
! 788:
! 789: s = splnet();
! 790: for (ifp = TAILQ_FIRST(&ifnet); ifp; ifp = TAILQ_NEXT(ifp, if_list)) {
! 791: if (strcmp(name, ifp->if_xname) == 0) {
! 792: if_attachdomain1(ifp);
! 793: break;
! 794: }
! 795: }
! 796: splx(s);
! 797:
! 798: return (error);
1.63 thorpej 799: }
800:
801: /*
802: * Destroy a clone network interface.
803: */
804: int
805: if_clone_destroy(name)
806: const char *name;
807: {
808: struct if_clone *ifc;
809: struct ifnet *ifp;
810:
811: ifc = if_clone_lookup(name, NULL);
812: if (ifc == NULL)
813: return (EINVAL);
814:
815: ifp = ifunit(name);
816: if (ifp == NULL)
817: return (ENXIO);
818:
819: if (ifc->ifc_destroy == NULL)
820: return (EOPNOTSUPP);
821:
822: (*ifc->ifc_destroy)(ifp);
823: return (0);
824: }
825:
826: /*
827: * Look up a network interface cloner.
828: */
829: struct if_clone *
830: if_clone_lookup(name, unitp)
831: const char *name;
832: int *unitp;
833: {
834: struct if_clone *ifc;
835: const char *cp;
1.128 itojun 836: int unit;
1.63 thorpej 837:
1.128 itojun 838: /* separate interface name from unit */
839: for (cp = name;
1.130 itojun 840: cp - name < IFNAMSIZ && *cp && (*cp < '0' || *cp > '9');
1.128 itojun 841: cp++)
842: continue;
843:
844: if (cp == name || cp - name == IFNAMSIZ || !*cp)
845: return (NULL); /* No name or unit number */
846:
847: LIST_FOREACH(ifc, &if_cloners, ifc_list) {
848: if (strlen(ifc->ifc_name) == cp - name &&
849: !strncmp(name, ifc->ifc_name, cp - name))
850: break;
1.63 thorpej 851: }
852:
1.128 itojun 853: if (ifc == NULL)
854: return (NULL);
1.63 thorpej 855:
1.128 itojun 856: unit = 0;
1.129 itojun 857: while (cp - name < IFNAMSIZ && *cp) {
858: if (*cp < '0' || *cp > '9' || unit > INT_MAX / 10) {
1.63 thorpej 859: /* Bogus unit number. */
860: return (NULL);
861: }
1.128 itojun 862: unit = (unit * 10) + (*cp++ - '0');
1.63 thorpej 863: }
864:
865: if (unitp != NULL)
1.128 itojun 866: *unitp = unit;
1.63 thorpej 867: return (ifc);
868: }
869:
870: /*
871: * Register a network interface cloner.
872: */
873: void
874: if_clone_attach(ifc)
875: struct if_clone *ifc;
876: {
877:
878: LIST_INSERT_HEAD(&if_cloners, ifc, ifc_list);
1.67 thorpej 879: if_cloners_count++;
1.63 thorpej 880: }
881:
882: /*
883: * Unregister a network interface cloner.
884: */
885: void
886: if_clone_detach(ifc)
887: struct if_clone *ifc;
888: {
889:
890: LIST_REMOVE(ifc, ifc_list);
1.67 thorpej 891: if_cloners_count--;
892: }
893:
894: /*
895: * Provide list of interface cloners to userspace.
896: */
897: int
898: if_clone_list(ifcr)
899: struct if_clonereq *ifcr;
900: {
901: char outbuf[IFNAMSIZ], *dst;
902: struct if_clone *ifc;
903: int count, error = 0;
904:
905: ifcr->ifcr_total = if_cloners_count;
906: if ((dst = ifcr->ifcr_buffer) == NULL) {
907: /* Just asking how many there are. */
908: return (0);
909: }
910:
911: if (ifcr->ifcr_count < 0)
912: return (EINVAL);
913:
914: count = (if_cloners_count < ifcr->ifcr_count) ?
915: if_cloners_count : ifcr->ifcr_count;
916:
917: for (ifc = LIST_FIRST(&if_cloners); ifc != NULL && count != 0;
918: ifc = LIST_NEXT(ifc, ifc_list), count--, dst += IFNAMSIZ) {
919: strncpy(outbuf, ifc->ifc_name, IFNAMSIZ);
920: outbuf[IFNAMSIZ - 1] = '\0'; /* sanity */
921: error = copyout(outbuf, dst, IFNAMSIZ);
922: if (error)
923: break;
924: }
925:
926: return (error);
1.63 thorpej 927: }
928:
929: /*
1.1 cgd 930: * Locate an interface based on a complete address.
931: */
932: /*ARGSUSED*/
933: struct ifaddr *
934: ifa_ifwithaddr(addr)
1.140 matt 935: const struct sockaddr *addr;
1.1 cgd 936: {
1.61 augustss 937: struct ifnet *ifp;
938: struct ifaddr *ifa;
1.1 cgd 939:
940: #define equal(a1, a2) \
941: (bcmp((caddr_t)(a1), (caddr_t)(a2), ((struct sockaddr *)(a1))->sa_len) == 0)
1.53 thorpej 942:
943: for (ifp = TAILQ_FIRST(&ifnet); ifp != NULL;
944: ifp = TAILQ_NEXT(ifp, if_list)) {
945: if (ifp->if_output == if_nulloutput)
1.1 cgd 946: continue;
1.53 thorpej 947: for (ifa = TAILQ_FIRST(&ifp->if_addrlist); ifa != NULL;
948: ifa = TAILQ_NEXT(ifa, ifa_list)) {
949: if (ifa->ifa_addr->sa_family != addr->sa_family)
950: continue;
951: if (equal(addr, ifa->ifa_addr))
952: return (ifa);
953: if ((ifp->if_flags & IFF_BROADCAST) &&
954: ifa->ifa_broadaddr &&
955: /* IP6 doesn't have broadcast */
956: ifa->ifa_broadaddr->sa_len != 0 &&
957: equal(ifa->ifa_broadaddr, addr))
958: return (ifa);
959: }
1.1 cgd 960: }
1.53 thorpej 961: return (NULL);
1.1 cgd 962: }
1.49 itojun 963:
1.1 cgd 964: /*
965: * Locate the point to point interface with a given destination address.
966: */
967: /*ARGSUSED*/
968: struct ifaddr *
969: ifa_ifwithdstaddr(addr)
1.140 matt 970: const struct sockaddr *addr;
1.1 cgd 971: {
1.61 augustss 972: struct ifnet *ifp;
973: struct ifaddr *ifa;
1.1 cgd 974:
1.53 thorpej 975: for (ifp = TAILQ_FIRST(&ifnet); ifp != NULL;
976: ifp = TAILQ_NEXT(ifp, if_list)) {
977: if (ifp->if_output == if_nulloutput)
978: continue;
979: if (ifp->if_flags & IFF_POINTOPOINT) {
980: for (ifa = TAILQ_FIRST(&ifp->if_addrlist); ifa != NULL;
981: ifa = TAILQ_NEXT(ifa, ifa_list)) {
982: if (ifa->ifa_addr->sa_family !=
983: addr->sa_family ||
984: ifa->ifa_dstaddr == NULL)
985: continue;
986: if (equal(addr, ifa->ifa_dstaddr))
987: return (ifa);
988: }
989: }
1.1 cgd 990: }
1.53 thorpej 991: return (NULL);
1.1 cgd 992: }
993:
994: /*
995: * Find an interface on a specific network. If many, choice
1.15 mycroft 996: * is most specific found.
1.1 cgd 997: */
998: struct ifaddr *
999: ifa_ifwithnet(addr)
1.140 matt 1000: const struct sockaddr *addr;
1.1 cgd 1001: {
1.61 augustss 1002: struct ifnet *ifp;
1003: struct ifaddr *ifa;
1.140 matt 1004: const struct sockaddr_dl *sdl;
1.15 mycroft 1005: struct ifaddr *ifa_maybe = 0;
1.1 cgd 1006: u_int af = addr->sa_family;
1.15 mycroft 1007: char *addr_data = addr->sa_data, *cplim;
1.1 cgd 1008:
1009: if (af == AF_LINK) {
1.53 thorpej 1010: sdl = (struct sockaddr_dl *)addr;
1.137 itojun 1011: if (sdl->sdl_index && sdl->sdl_index < if_indexlim &&
1012: ifindex2ifnet[sdl->sdl_index] &&
1.53 thorpej 1013: ifindex2ifnet[sdl->sdl_index]->if_output != if_nulloutput)
1014: return (ifnet_addrs[sdl->sdl_index]);
1.1 cgd 1015: }
1.51 bouyer 1016: #ifdef NETATALK
1017: if (af == AF_APPLETALK) {
1.140 matt 1018: const struct sockaddr_at *sat, *sat2;
1.62 bouyer 1019: sat = (struct sockaddr_at *)addr;
1.53 thorpej 1020: for (ifp = TAILQ_FIRST(&ifnet); ifp != NULL;
1021: ifp = TAILQ_NEXT(ifp, if_list)) {
1022: if (ifp->if_output == if_nulloutput)
1023: continue;
1.51 bouyer 1024: ifa = at_ifawithnet((struct sockaddr_at *)addr, ifp);
1.62 bouyer 1025: if (ifa == NULL)
1026: continue;
1027: sat2 = (struct sockaddr_at *)ifa->ifa_addr;
1028: if (sat2->sat_addr.s_net == sat->sat_addr.s_net)
1029: return (ifa); /* exact match */
1030: if (ifa_maybe == NULL) {
1.112 wiz 1031: /* else keep the if with the right range */
1.62 bouyer 1032: ifa_maybe = ifa;
1033: }
1.51 bouyer 1034: }
1.62 bouyer 1035: return (ifa_maybe);
1.51 bouyer 1036: }
1037: #endif
1.53 thorpej 1038: for (ifp = TAILQ_FIRST(&ifnet); ifp != NULL;
1039: ifp = TAILQ_NEXT(ifp, if_list)) {
1040: if (ifp->if_output == if_nulloutput)
1041: continue;
1042: for (ifa = TAILQ_FIRST(&ifp->if_addrlist); ifa != NULL;
1043: ifa = TAILQ_NEXT(ifa, ifa_list)) {
1.61 augustss 1044: char *cp, *cp2, *cp3;
1.15 mycroft 1045:
1046: if (ifa->ifa_addr->sa_family != af ||
1047: ifa->ifa_netmask == 0)
1.53 thorpej 1048: next: continue;
1.15 mycroft 1049: cp = addr_data;
1050: cp2 = ifa->ifa_addr->sa_data;
1051: cp3 = ifa->ifa_netmask->sa_data;
1052: cplim = (char *)ifa->ifa_netmask +
1.53 thorpej 1053: ifa->ifa_netmask->sa_len;
1054: while (cp3 < cplim) {
1055: if ((*cp++ ^ *cp2++) & *cp3++) {
1056: /* want to continue for() loop */
1.32 mrg 1057: goto next;
1.53 thorpej 1058: }
1059: }
1.15 mycroft 1060: if (ifa_maybe == 0 ||
1061: rn_refines((caddr_t)ifa->ifa_netmask,
1062: (caddr_t)ifa_maybe->ifa_netmask))
1063: ifa_maybe = ifa;
1064: }
1.53 thorpej 1065: }
1.15 mycroft 1066: return (ifa_maybe);
1.26 mrg 1067: }
1.53 thorpej 1068:
1.26 mrg 1069: /*
1070: * Find the interface of the addresss.
1071: */
1072: struct ifaddr *
1073: ifa_ifwithladdr(addr)
1.140 matt 1074: const struct sockaddr *addr;
1.26 mrg 1075: {
1076: struct ifaddr *ia;
1077:
1.53 thorpej 1078: if ((ia = ifa_ifwithaddr(addr)) || (ia = ifa_ifwithdstaddr(addr)) ||
1079: (ia = ifa_ifwithnet(addr)))
1.26 mrg 1080: return (ia);
1081: return (NULL);
1.1 cgd 1082: }
1083:
1084: /*
1085: * Find an interface using a specific address family
1086: */
1087: struct ifaddr *
1088: ifa_ifwithaf(af)
1.61 augustss 1089: int af;
1.1 cgd 1090: {
1.61 augustss 1091: struct ifnet *ifp;
1092: struct ifaddr *ifa;
1.1 cgd 1093:
1.53 thorpej 1094: for (ifp = TAILQ_FIRST(&ifnet); ifp != NULL;
1095: ifp = TAILQ_NEXT(ifp, if_list)) {
1096: if (ifp->if_output == if_nulloutput)
1097: continue;
1098: for (ifa = TAILQ_FIRST(&ifp->if_addrlist); ifa != NULL;
1099: ifa = TAILQ_NEXT(ifa, ifa_list)) {
1.21 mycroft 1100: if (ifa->ifa_addr->sa_family == af)
1101: return (ifa);
1.53 thorpej 1102: }
1103: }
1104: return (NULL);
1.1 cgd 1105: }
1106:
1107: /*
1108: * Find an interface address specific to an interface best matching
1109: * a given address.
1110: */
1111: struct ifaddr *
1112: ifaof_ifpforaddr(addr, ifp)
1.140 matt 1113: const struct sockaddr *addr;
1.61 augustss 1114: struct ifnet *ifp;
1.1 cgd 1115: {
1.61 augustss 1116: struct ifaddr *ifa;
1.140 matt 1117: const char *cp, *cp2, *cp3;
1118: const char *cplim;
1.1 cgd 1119: struct ifaddr *ifa_maybe = 0;
1120: u_int af = addr->sa_family;
1121:
1.53 thorpej 1122: if (ifp->if_output == if_nulloutput)
1123: return (NULL);
1124:
1.1 cgd 1125: if (af >= AF_MAX)
1.53 thorpej 1126: return (NULL);
1127:
1128: for (ifa = TAILQ_FIRST(&ifp->if_addrlist); ifa != NULL;
1129: ifa = TAILQ_NEXT(ifa, ifa_list)) {
1.1 cgd 1130: if (ifa->ifa_addr->sa_family != af)
1131: continue;
1132: ifa_maybe = ifa;
1133: if (ifa->ifa_netmask == 0) {
1134: if (equal(addr, ifa->ifa_addr) ||
1.53 thorpej 1135: (ifa->ifa_dstaddr &&
1136: equal(addr, ifa->ifa_dstaddr)))
1.1 cgd 1137: return (ifa);
1138: continue;
1139: }
1140: cp = addr->sa_data;
1141: cp2 = ifa->ifa_addr->sa_data;
1142: cp3 = ifa->ifa_netmask->sa_data;
1143: cplim = ifa->ifa_netmask->sa_len + (char *)ifa->ifa_netmask;
1.53 thorpej 1144: for (; cp3 < cplim; cp3++) {
1.1 cgd 1145: if ((*cp++ ^ *cp2++) & *cp3)
1146: break;
1.53 thorpej 1147: }
1.1 cgd 1148: if (cp3 == cplim)
1149: return (ifa);
1150: }
1151: return (ifa_maybe);
1152: }
1.9 mycroft 1153:
1.1 cgd 1154: /*
1155: * Default action when installing a route with a Link Level gateway.
1156: * Lookup an appropriate real ifa to point to.
1157: * This should be moved to /sys/net/link.c eventually.
1158: */
1.15 mycroft 1159: void
1.82 itojun 1160: link_rtrequest(cmd, rt, info)
1.15 mycroft 1161: int cmd;
1.61 augustss 1162: struct rtentry *rt;
1.82 itojun 1163: struct rt_addrinfo *info;
1.1 cgd 1164: {
1.61 augustss 1165: struct ifaddr *ifa;
1.1 cgd 1166: struct sockaddr *dst;
1.15 mycroft 1167: struct ifnet *ifp;
1.1 cgd 1168:
1169: if (cmd != RTM_ADD || ((ifa = rt->rt_ifa) == 0) ||
1170: ((ifp = ifa->ifa_ifp) == 0) || ((dst = rt_key(rt)) == 0))
1171: return;
1.24 christos 1172: if ((ifa = ifaof_ifpforaddr(dst, ifp)) != NULL) {
1.15 mycroft 1173: IFAFREE(rt->rt_ifa);
1.1 cgd 1174: rt->rt_ifa = ifa;
1.53 thorpej 1175: IFAREF(ifa);
1.1 cgd 1176: if (ifa->ifa_rtrequest && ifa->ifa_rtrequest != link_rtrequest)
1.82 itojun 1177: ifa->ifa_rtrequest(cmd, rt, info);
1.1 cgd 1178: }
1179: }
1180:
1181: /*
1182: * Mark an interface down and notify protocols of
1183: * the transition.
1.23 mycroft 1184: * NOTE: must be called at splsoftnet or equivalent.
1.1 cgd 1185: */
1.15 mycroft 1186: void
1.1 cgd 1187: if_down(ifp)
1.61 augustss 1188: struct ifnet *ifp;
1.1 cgd 1189: {
1.61 augustss 1190: struct ifaddr *ifa;
1.1 cgd 1191:
1192: ifp->if_flags &= ~IFF_UP;
1.91 itojun 1193: microtime(&ifp->if_lastchange);
1.53 thorpej 1194: for (ifa = TAILQ_FIRST(&ifp->if_addrlist); ifa != NULL;
1195: ifa = TAILQ_NEXT(ifa, ifa_list))
1.1 cgd 1196: pfctlinput(PRC_IFDOWN, ifa->ifa_addr);
1.78 thorpej 1197: IFQ_PURGE(&ifp->if_snd);
1.15 mycroft 1198: rt_ifmsg(ifp);
1199: }
1200:
1201: /*
1202: * Mark an interface up and notify protocols of
1203: * the transition.
1.23 mycroft 1204: * NOTE: must be called at splsoftnet or equivalent.
1.15 mycroft 1205: */
1206: void
1207: if_up(ifp)
1.61 augustss 1208: struct ifnet *ifp;
1.15 mycroft 1209: {
1.24 christos 1210: #ifdef notyet
1.61 augustss 1211: struct ifaddr *ifa;
1.24 christos 1212: #endif
1.15 mycroft 1213:
1214: ifp->if_flags |= IFF_UP;
1.91 itojun 1215: microtime(&ifp->if_lastchange);
1.15 mycroft 1216: #ifdef notyet
1217: /* this has no effect on IP, and will kill all ISO connections XXX */
1.53 thorpej 1218: for (ifa = TAILQ_FIRST(&ifp->if_addrlist); ifa != NULL;
1219: ifa = TAILQ_NEXT(ifa, ifa_list))
1.15 mycroft 1220: pfctlinput(PRC_IFUP, ifa->ifa_addr);
1221: #endif
1222: rt_ifmsg(ifp);
1.49 itojun 1223: #ifdef INET6
1224: in6_if_up(ifp);
1225: #endif
1.1 cgd 1226: }
1227:
1228: /*
1229: * Handle interface watchdog timer routines. Called
1230: * from softclock, we decrement timers (if set) and
1231: * call the appropriate interface routine on expiration.
1232: */
1.4 andrew 1233: void
1.13 cgd 1234: if_slowtimo(arg)
1235: void *arg;
1.1 cgd 1236: {
1.61 augustss 1237: struct ifnet *ifp;
1.88 thorpej 1238: int s = splnet();
1.1 cgd 1239:
1.53 thorpej 1240: for (ifp = TAILQ_FIRST(&ifnet); ifp != NULL;
1241: ifp = TAILQ_NEXT(ifp, if_list)) {
1.1 cgd 1242: if (ifp->if_timer == 0 || --ifp->if_timer)
1243: continue;
1244: if (ifp->if_watchdog)
1.34 thorpej 1245: (*ifp->if_watchdog)(ifp);
1.1 cgd 1246: }
1247: splx(s);
1.59 thorpej 1248: callout_reset(&if_slowtimo_ch, hz / IFNET_SLOWHZ,
1249: if_slowtimo, NULL);
1.65 thorpej 1250: }
1251:
1252: /*
1253: * Set/clear promiscuous mode on interface ifp based on the truth value
1254: * of pswitch. The calls are reference counted so that only the first
1255: * "on" request actually has an effect, as does the final "off" request.
1256: * Results are undefined if the "off" and "on" requests are not matched.
1257: */
1258: int
1259: ifpromisc(ifp, pswitch)
1260: struct ifnet *ifp;
1261: int pswitch;
1262: {
1263: int pcount, ret;
1264: short flags;
1265: struct ifreq ifr;
1266:
1267: pcount = ifp->if_pcount;
1268: flags = ifp->if_flags;
1269: if (pswitch) {
1270: /*
1.71 thorpej 1271: * Allow the device to be "placed" into promiscuous
1272: * mode even if it is not configured up. It will
1273: * consult IFF_PROMISC when it is is brought up.
1.65 thorpej 1274: */
1.68 pk 1275: if (ifp->if_pcount++ != 0)
1.65 thorpej 1276: return (0);
1277: ifp->if_flags |= IFF_PROMISC;
1.71 thorpej 1278: if ((ifp->if_flags & IFF_UP) == 0)
1279: return (0);
1.65 thorpej 1280: } else {
1281: if (--ifp->if_pcount > 0)
1282: return (0);
1283: ifp->if_flags &= ~IFF_PROMISC;
1284: /*
1285: * If the device is not configured up, we should not need to
1286: * turn off promiscuous mode (device should have turned it
1287: * off when interface went down; and will look at IFF_PROMISC
1288: * again next time interface comes up).
1289: */
1290: if ((ifp->if_flags & IFF_UP) == 0)
1291: return (0);
1292: }
1293: memset(&ifr, 0, sizeof(ifr));
1294: ifr.ifr_flags = ifp->if_flags;
1295: ret = (*ifp->if_ioctl)(ifp, SIOCSIFFLAGS, (caddr_t) &ifr);
1296: /* Restore interface state if not successful. */
1297: if (ret != 0) {
1298: ifp->if_pcount = pcount;
1299: ifp->if_flags = flags;
1300: }
1301: return (ret);
1.1 cgd 1302: }
1303:
1304: /*
1305: * Map interface name to
1306: * interface structure pointer.
1307: */
1308: struct ifnet *
1309: ifunit(name)
1.52 thorpej 1310: const char *name;
1.1 cgd 1311: {
1.61 augustss 1312: struct ifnet *ifp;
1.105 matt 1313: const char *cp = name;
1314: u_int unit = 0;
1315: u_int i;
1316:
1317: /*
1318: * If the entire name is a number, treat it as an ifindex.
1319: */
1320: for (i = 0; i < IFNAMSIZ && *cp >= '0' && *cp <= '9'; i++, cp++) {
1321: unit = unit * 10 + (*cp - '0');
1322: }
1323:
1324: /*
1325: * If the number took all of the name, then it's a valid ifindex.
1326: */
1327: if (i == IFNAMSIZ || (cp != name && *cp == '\0')) {
1.137 itojun 1328: if (unit >= if_indexlim)
1.105 matt 1329: return (NULL);
1330: ifp = ifindex2ifnet[unit];
1331: if (ifp == NULL || ifp->if_output == if_nulloutput)
1332: return (NULL);
1333: return (ifp);
1334: }
1.34 thorpej 1335:
1.53 thorpej 1336: for (ifp = TAILQ_FIRST(&ifnet); ifp != NULL;
1337: ifp = TAILQ_NEXT(ifp, if_list)) {
1338: if (ifp->if_output == if_nulloutput)
1339: continue;
1340: if (strcmp(ifp->if_xname, name) == 0)
1.34 thorpej 1341: return (ifp);
1.53 thorpej 1342: }
1.34 thorpej 1343: return (NULL);
1.1 cgd 1344: }
1.49 itojun 1345:
1.1 cgd 1346: /*
1347: * Interface ioctls.
1348: */
1.15 mycroft 1349: int
1.123 fvdl 1350: ifioctl(so, cmd, data, p)
1.1 cgd 1351: struct socket *so;
1.18 cgd 1352: u_long cmd;
1.1 cgd 1353: caddr_t data;
1.123 fvdl 1354: struct proc *p;
1.1 cgd 1355: {
1.61 augustss 1356: struct ifnet *ifp;
1357: struct ifreq *ifr;
1.89 thorpej 1358: struct ifcapreq *ifcr;
1.105 matt 1359: struct ifdatareq *ifdr;
1.89 thorpej 1360: int s, error = 0;
1.49 itojun 1361: short oif_flags;
1.140 matt 1362: int prived_error;
1363:
1364: if (p)
1365: prived_error = suser(p->p_ucred, &p->p_acflag);
1366: else
1367: prived_error = 0;
1.1 cgd 1368:
1369: switch (cmd) {
1370:
1371: case SIOCGIFCONF:
1372: case OSIOCGIFCONF:
1373: return (ifconf(cmd, data));
1374: }
1375: ifr = (struct ifreq *)data;
1.89 thorpej 1376: ifcr = (struct ifcapreq *)data;
1.105 matt 1377: ifdr = (struct ifdatareq *)data;
1.63 thorpej 1378:
1379: switch (cmd) {
1380: case SIOCIFCREATE:
1381: case SIOCIFDESTROY:
1.140 matt 1382: if (prived_error)
1383: return (prived_error);
1.64 thorpej 1384: return ((cmd == SIOCIFCREATE) ?
1385: if_clone_create(ifr->ifr_name) :
1386: if_clone_destroy(ifr->ifr_name));
1.67 thorpej 1387:
1388: case SIOCIFGCLONERS:
1389: return (if_clone_list((struct if_clonereq *)data));
1.63 thorpej 1390: }
1391:
1.1 cgd 1392: ifp = ifunit(ifr->ifr_name);
1393: if (ifp == 0)
1394: return (ENXIO);
1.49 itojun 1395: oif_flags = ifp->if_flags;
1.1 cgd 1396: switch (cmd) {
1397:
1398: case SIOCGIFFLAGS:
1399: ifr->ifr_flags = ifp->if_flags;
1400: break;
1401:
1402: case SIOCGIFMETRIC:
1403: ifr->ifr_metric = ifp->if_metric;
1404: break;
1.7 hpeyerl 1405:
1.36 mycroft 1406: case SIOCGIFMTU:
1.37 cgd 1407: ifr->ifr_mtu = ifp->if_mtu;
1.80 thorpej 1408: break;
1409:
1410: case SIOCGIFDLT:
1411: ifr->ifr_dlt = ifp->if_dlt;
1.37 cgd 1412: break;
1.36 mycroft 1413:
1.1 cgd 1414: case SIOCSIFFLAGS:
1.140 matt 1415: if (prived_error != 0)
1416: return (prived_error);
1.1 cgd 1417: if (ifp->if_flags & IFF_UP && (ifr->ifr_flags & IFF_UP) == 0) {
1.89 thorpej 1418: s = splnet();
1.1 cgd 1419: if_down(ifp);
1420: splx(s);
1421: }
1.15 mycroft 1422: if (ifr->ifr_flags & IFF_UP && (ifp->if_flags & IFF_UP) == 0) {
1.89 thorpej 1423: s = splnet();
1.15 mycroft 1424: if_up(ifp);
1425: splx(s);
1426: }
1.1 cgd 1427: ifp->if_flags = (ifp->if_flags & IFF_CANTCHANGE) |
1428: (ifr->ifr_flags &~ IFF_CANTCHANGE);
1429: if (ifp->if_ioctl)
1430: (void) (*ifp->if_ioctl)(ifp, cmd, data);
1431: break;
1432:
1.89 thorpej 1433: case SIOCGIFCAP:
1434: ifcr->ifcr_capabilities = ifp->if_capabilities;
1435: ifcr->ifcr_capenable = ifp->if_capenable;
1436: break;
1437:
1438: case SIOCSIFCAP:
1.140 matt 1439: if (prived_error != 0)
1440: return (prived_error);
1.89 thorpej 1441: if ((ifcr->ifcr_capenable & ~ifp->if_capabilities) != 0)
1442: return (EINVAL);
1443: if (ifp->if_ioctl == NULL)
1444: return (EOPNOTSUPP);
1445:
1446: /* Must prevent race with packet reception here. */
1447: s = splnet();
1448: if (ifcr->ifcr_capenable != ifp->if_capenable) {
1449: struct ifreq ifrq;
1450:
1451: ifrq.ifr_flags = ifp->if_flags;
1452: ifp->if_capenable = ifcr->ifcr_capenable;
1453:
1454: /* Pre-compute the checksum flags mask. */
1.97 thorpej 1455: ifp->if_csum_flags_tx = 0;
1456: ifp->if_csum_flags_rx = 0;
1457: if (ifp->if_capenable & IFCAP_CSUM_IPv4) {
1458: ifp->if_csum_flags_tx |= M_CSUM_IPv4;
1459: ifp->if_csum_flags_rx |= M_CSUM_IPv4;
1460: }
1461:
1462: if (ifp->if_capenable & IFCAP_CSUM_TCPv4) {
1463: ifp->if_csum_flags_tx |= M_CSUM_TCPv4;
1464: ifp->if_csum_flags_rx |= M_CSUM_TCPv4;
1465: } else if (ifp->if_capenable & IFCAP_CSUM_TCPv4_Rx)
1466: ifp->if_csum_flags_rx |= M_CSUM_TCPv4;
1467:
1468: if (ifp->if_capenable & IFCAP_CSUM_UDPv4) {
1469: ifp->if_csum_flags_tx |= M_CSUM_UDPv4;
1470: ifp->if_csum_flags_rx |= M_CSUM_UDPv4;
1471: } else if (ifp->if_capenable & IFCAP_CSUM_UDPv4_Rx)
1472: ifp->if_csum_flags_rx |= M_CSUM_UDPv4;
1473:
1474: if (ifp->if_capenable & IFCAP_CSUM_TCPv6) {
1475: ifp->if_csum_flags_tx |= M_CSUM_TCPv6;
1476: ifp->if_csum_flags_rx |= M_CSUM_TCPv6;
1477: }
1478:
1479: if (ifp->if_capenable & IFCAP_CSUM_UDPv6) {
1480: ifp->if_csum_flags_tx |= M_CSUM_UDPv6;
1481: ifp->if_csum_flags_rx |= M_CSUM_UDPv6;
1482: }
1.89 thorpej 1483:
1484: /*
1485: * Only kick the interface if it's up. If it's
1486: * not up now, it will notice the cap enables
1487: * when it is brought up later.
1488: */
1489: if (ifp->if_flags & IFF_UP)
1490: (void) (*ifp->if_ioctl)(ifp, SIOCSIFFLAGS,
1491: (caddr_t) &ifrq);
1492: }
1493: splx(s);
1494: break;
1495:
1.1 cgd 1496: case SIOCSIFMETRIC:
1.140 matt 1497: if (prived_error != 0)
1498: return (prived_error);
1.1 cgd 1499: ifp->if_metric = ifr->ifr_metric;
1.105 matt 1500: break;
1501:
1502: case SIOCGIFDATA:
1503: ifdr->ifdr_data = ifp->if_data;
1504: break;
1505:
1506: case SIOCZIFDATA:
1.140 matt 1507: if (prived_error != 0)
1508: return (prived_error);
1.105 matt 1509: ifdr->ifdr_data = ifp->if_data;
1510: /*
1511: * Assumes that the volatile counters that can be
1512: * zero'ed are at the end of if_data.
1513: */
1514: memset(&ifp->if_data.ifi_ipackets, 0, sizeof(ifp->if_data) -
1515: offsetof(struct if_data, ifi_ipackets));
1.5 deraadt 1516: break;
1517:
1.36 mycroft 1518: case SIOCSIFMTU:
1.49 itojun 1519: {
1520: u_long oldmtu = ifp->if_mtu;
1521:
1.140 matt 1522: if (prived_error)
1523: return (prived_error);
1.49 itojun 1524: if (ifp->if_ioctl == NULL)
1525: return (EOPNOTSUPP);
1526: error = (*ifp->if_ioctl)(ifp, cmd, data);
1527:
1528: /*
1529: * If the link MTU changed, do network layer specific procedure.
1530: */
1531: if (ifp->if_mtu != oldmtu) {
1532: #ifdef INET6
1533: nd6_setmtu(ifp);
1534: #endif
1535: }
1536: break;
1537: }
1.72 thorpej 1538: case SIOCSIFPHYADDR:
1539: case SIOCDIFPHYADDR:
1540: #ifdef INET6
1541: case SIOCSIFPHYADDR_IN6:
1542: #endif
1.85 itojun 1543: case SIOCSLIFPHYADDR:
1.15 mycroft 1544: case SIOCADDMULTI:
1545: case SIOCDELMULTI:
1.39 thorpej 1546: case SIOCSIFMEDIA:
1.140 matt 1547: if (prived_error != 0)
1548: return (prived_error);
1.39 thorpej 1549: /* FALLTHROUGH */
1.74 itojun 1550: case SIOCGIFPSRCADDR:
1551: case SIOCGIFPDSTADDR:
1.85 itojun 1552: case SIOCGLIFPHYADDR:
1.39 thorpej 1553: case SIOCGIFMEDIA:
1.15 mycroft 1554: if (ifp->if_ioctl == 0)
1.5 deraadt 1555: return (EOPNOTSUPP);
1.49 itojun 1556: error = (*ifp->if_ioctl)(ifp, cmd, data);
1557: break;
1.1 cgd 1558:
1.45 kml 1559: case SIOCSDRVSPEC:
1.66 onoe 1560: case SIOCS80211NWID:
1.69 onoe 1561: case SIOCS80211NWKEY:
1.76 thorpej 1562: case SIOCS80211POWER:
1.114 onoe 1563: case SIOCS80211BSSID:
1564: case SIOCS80211CHANNEL:
1.45 kml 1565: /* XXX: need to pass proc pointer through to driver... */
1.140 matt 1566: if (prived_error != 0)
1567: return (prived_error);
1.45 kml 1568: /* FALLTHROUGH */
1.1 cgd 1569: default:
1570: if (so->so_proto == 0)
1571: return (EOPNOTSUPP);
1.119 christos 1572: #if !defined(COMPAT_43) && !defined(COMPAT_LINUX) && !defined(COMPAT_SVR4) && !defined(COMPAT_ULTRIX) && !defined(LKM)
1.49 itojun 1573: error = ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL,
1.36 mycroft 1574: (struct mbuf *)cmd, (struct mbuf *)data,
1.123 fvdl 1575: (struct mbuf *)ifp, p));
1.1 cgd 1576: #else
1577: {
1578: int ocmd = cmd;
1579:
1580: switch (cmd) {
1581:
1.28 mycroft 1582: case SIOCSIFADDR:
1.1 cgd 1583: case SIOCSIFDSTADDR:
1584: case SIOCSIFBRDADDR:
1585: case SIOCSIFNETMASK:
1586: #if BYTE_ORDER != BIG_ENDIAN
1587: if (ifr->ifr_addr.sa_family == 0 &&
1588: ifr->ifr_addr.sa_len < 16) {
1589: ifr->ifr_addr.sa_family = ifr->ifr_addr.sa_len;
1590: ifr->ifr_addr.sa_len = 16;
1591: }
1592: #else
1593: if (ifr->ifr_addr.sa_len == 0)
1594: ifr->ifr_addr.sa_len = 16;
1595: #endif
1596: break;
1597:
1598: case OSIOCGIFADDR:
1599: cmd = SIOCGIFADDR;
1600: break;
1601:
1602: case OSIOCGIFDSTADDR:
1603: cmd = SIOCGIFDSTADDR;
1604: break;
1605:
1606: case OSIOCGIFBRDADDR:
1607: cmd = SIOCGIFBRDADDR;
1608: break;
1609:
1610: case OSIOCGIFNETMASK:
1611: cmd = SIOCGIFNETMASK;
1612: }
1.49 itojun 1613:
1.24 christos 1614: error = ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL,
1.36 mycroft 1615: (struct mbuf *)cmd, (struct mbuf *)data,
1.123 fvdl 1616: (struct mbuf *)ifp, p));
1.49 itojun 1617:
1.1 cgd 1618: switch (ocmd) {
1619: case OSIOCGIFADDR:
1620: case OSIOCGIFDSTADDR:
1621: case OSIOCGIFBRDADDR:
1622: case OSIOCGIFNETMASK:
1.20 cgd 1623: *(u_int16_t *)&ifr->ifr_addr = ifr->ifr_addr.sa_family;
1.1 cgd 1624: }
1.49 itojun 1625: }
1626: #endif /* COMPAT_43 */
1627: break;
1628: }
1.1 cgd 1629:
1.49 itojun 1630: if (((oif_flags ^ ifp->if_flags) & IFF_UP) != 0) {
1631: #ifdef INET6
1632: if ((ifp->if_flags & IFF_UP) != 0) {
1.89 thorpej 1633: s = splnet();
1.49 itojun 1634: in6_if_up(ifp);
1635: splx(s);
1636: }
1.1 cgd 1637: #endif
1638: }
1.49 itojun 1639:
1640: return (error);
1.1 cgd 1641: }
1642:
1643: /*
1644: * Return interface configuration
1645: * of system. List may be used
1646: * in later ioctl's (above) to get
1647: * other information.
1648: */
1649: /*ARGSUSED*/
1.15 mycroft 1650: int
1.1 cgd 1651: ifconf(cmd, data)
1.19 mycroft 1652: u_long cmd;
1.1 cgd 1653: caddr_t data;
1654: {
1.61 augustss 1655: struct ifconf *ifc = (struct ifconf *)data;
1656: struct ifnet *ifp;
1657: struct ifaddr *ifa;
1.1 cgd 1658: struct ifreq ifr, *ifrp;
1659: int space = ifc->ifc_len, error = 0;
1.127 christos 1660: const int sz = (int)sizeof(ifr);
1661: int sign;
1.1 cgd 1662:
1.127 christos 1663: if ((ifrp = ifc->ifc_req) == NULL) {
1664: space = 0;
1665: sign = -1;
1666: } else {
1667: sign = 1;
1668: }
1.98 matt 1669: TAILQ_FOREACH(ifp, &ifnet, if_list) {
1.34 thorpej 1670: bcopy(ifp->if_xname, ifr.ifr_name, IFNAMSIZ);
1.98 matt 1671: if ((ifa = TAILQ_FIRST(&ifp->if_addrlist)) == 0) {
1.127 christos 1672: memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr));
1673: if (ifrp != NULL && space >= sz) {
1674: error = copyout(&ifr, ifrp, sz);
1.70 mellon 1675: if (error)
1676: break;
1.127 christos 1677: ifrp++;
1.70 mellon 1678: }
1.127 christos 1679: space -= sizeof(ifr) * sign;
1680: continue;
1681: }
1682:
1683: for (; ifa != 0; ifa = TAILQ_NEXT(ifa, ifa_list)) {
1.61 augustss 1684: struct sockaddr *sa = ifa->ifa_addr;
1.119 christos 1685: #if defined(COMPAT_43) || defined(COMPAT_LINUX) || defined(COMPAT_SVR4) || defined(COMPAT_ULTRIX)
1.1 cgd 1686: if (cmd == OSIOCGIFCONF) {
1687: struct osockaddr *osa =
1688: (struct osockaddr *)&ifr.ifr_addr;
1.127 christos 1689: /*
1690: * If it does not fit, we don't bother with it
1691: */
1692: if (sa->sa_len > sizeof(*osa))
1693: continue;
1.1 cgd 1694: ifr.ifr_addr = *sa;
1695: osa->sa_family = sa->sa_family;
1.127 christos 1696: if (ifrp != NULL && space >= sz) {
1697: error = copyout(&ifr, ifrp, sz);
1.70 mellon 1698: ifrp++;
1699: }
1.1 cgd 1700: } else
1701: #endif
1702: if (sa->sa_len <= sizeof(*sa)) {
1703: ifr.ifr_addr = *sa;
1.127 christos 1704: if (ifrp != NULL && space >= sz) {
1705: error = copyout(&ifr, ifrp, sz);
1.70 mellon 1706: ifrp++;
1707: }
1.1 cgd 1708: } else {
1.127 christos 1709: space -= (sa->sa_len - sizeof(*sa)) * sign;
1710: if (ifrp != NULL && space >= sz) {
1711: error = copyout(&ifr, ifrp,
1712: sizeof(ifr.ifr_name));
1.70 mellon 1713: if (error == 0) {
1.127 christos 1714: error = copyout(sa,
1715: &ifrp->ifr_addr,
1716: sa->sa_len);
1.70 mellon 1717: }
1718: ifrp = (struct ifreq *)
1719: (sa->sa_len +
1720: (caddr_t)&ifrp->ifr_addr);
1721: }
1.1 cgd 1722: }
1723: if (error)
1724: break;
1.127 christos 1725: space -= sz * sign;
1.1 cgd 1726: }
1727: }
1.127 christos 1728: if (ifrp != NULL)
1729: ifc->ifc_len -= space;
1730: else
1731: ifc->ifc_len = space;
1.1 cgd 1732: return (error);
1733: }
1.133 jonathan 1734:
1.138 drochner 1735: #if defined(INET) || defined(INET6)
1.136 atatat 1736: static void
1.139 atatat 1737: sysctl_net_ifq_setup(struct sysctllog **clog,
1738: int pf, const char *pfname,
1.136 atatat 1739: int ipn, const char *ipname,
1740: int qid, struct ifqueue *ifq)
1741: {
1742:
1.139 atatat 1743: sysctl_createv(clog, 0, NULL, NULL,
1744: CTLFLAG_PERMANENT,
1.136 atatat 1745: CTLTYPE_NODE, "net", NULL,
1746: NULL, 0, NULL, 0,
1747: CTL_NET, CTL_EOL);
1.139 atatat 1748: sysctl_createv(clog, 0, NULL, NULL,
1749: CTLFLAG_PERMANENT,
1.136 atatat 1750: CTLTYPE_NODE, pfname, NULL,
1751: NULL, 0, NULL, 0,
1752: CTL_NET, pf, CTL_EOL);
1.139 atatat 1753: sysctl_createv(clog, 0, NULL, NULL,
1754: CTLFLAG_PERMANENT,
1.136 atatat 1755: CTLTYPE_NODE, ipname, NULL,
1756: NULL, 0, NULL, 0,
1757: CTL_NET, pf, ipn, CTL_EOL);
1.139 atatat 1758: sysctl_createv(clog, 0, NULL, NULL,
1759: CTLFLAG_PERMANENT,
1.142 atatat 1760: CTLTYPE_NODE, "ifq",
1761: SYSCTL_DESCR("Protocol input queue controls"),
1.139 atatat 1762: NULL, 0, NULL, 0,
1763: CTL_NET, pf, ipn, qid, CTL_EOL);
1.136 atatat 1764:
1.139 atatat 1765: sysctl_createv(clog, 0, NULL, NULL,
1766: CTLFLAG_PERMANENT,
1.142 atatat 1767: CTLTYPE_INT, "len",
1768: SYSCTL_DESCR("Current input queue length"),
1.136 atatat 1769: NULL, 0, &ifq->ifq_len, 0,
1770: CTL_NET, pf, ipn, qid, IFQCTL_LEN, CTL_EOL);
1.139 atatat 1771: sysctl_createv(clog, 0, NULL, NULL,
1772: CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1.142 atatat 1773: CTLTYPE_INT, "maxlen",
1774: SYSCTL_DESCR("Maximum allowed input queue length"),
1.136 atatat 1775: NULL, 0, &ifq->ifq_maxlen, 0,
1776: CTL_NET, pf, ipn, qid, IFQCTL_MAXLEN, CTL_EOL);
1.133 jonathan 1777: #ifdef notyet
1.139 atatat 1778: sysctl_createv(clog, 0, NULL, NULL,
1779: CTLFLAG_PERMANENT,
1.142 atatat 1780: CTLTYPE_INT, "peak",
1781: SYSCTL_DESCR("Highest input queue length"),
1.136 atatat 1782: NULL, 0, &ifq->ifq_peak, 0,
1783: CTL_NET, pf, ipn, qid, IFQCTL_PEAK, CTL_EOL);
1784: #endif
1.139 atatat 1785: sysctl_createv(clog, 0, NULL, NULL,
1786: CTLFLAG_PERMANENT,
1.142 atatat 1787: CTLTYPE_INT, "drops",
1788: SYSCTL_DESCR("Packets dropped due to full input queue"),
1.136 atatat 1789: NULL, 0, &ifq->ifq_drops, 0,
1790: CTL_NET, pf, ipn, qid, IFQCTL_DROPS, CTL_EOL);
1791: }
1792:
1793: #ifdef INET
1794: SYSCTL_SETUP(sysctl_net_inet_ip_ifq_setup,
1795: "sysctl net.inet.ip.ifq subtree setup")
1796: {
1797: extern struct ifqueue ipintrq;
1798:
1.139 atatat 1799: sysctl_net_ifq_setup(clog, PF_INET, "inet", IPPROTO_IP, "ip",
1.136 atatat 1800: IPCTL_IFQ, &ipintrq);
1.133 jonathan 1801: }
1.136 atatat 1802: #endif /* INET */
1.133 jonathan 1803:
1.136 atatat 1804: #ifdef INET6
1805: SYSCTL_SETUP(sysctl_net_inet6_ip6_ifq_setup,
1806: "sysctl net.inet6.ip6.ifq subtree setup")
1807: {
1808: extern struct ifqueue ip6intrq;
1809:
1.139 atatat 1810: sysctl_net_ifq_setup(clog, PF_INET6, "inet6", IPPROTO_IPV6, "ip6",
1.136 atatat 1811: IPV6CTL_IFQ, &ip6intrq);
1812: }
1813: #endif /* INET6 */
1.138 drochner 1814: #endif /* INET || INET6 */
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