2 * Copyright (c) 1980, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
33 * @(#)if.c 8.3 (Berkeley) 1/4/94
34 * $FreeBSD: src/sys/net/if.c,v 1.185 2004/03/13 02:35:03 brooks Exp $
35 * $DragonFly: src/sys/net/if.c,v 1.60 2008/01/11 11:59:40 sephe Exp $
38 #include "opt_compat.h"
39 #include "opt_inet6.h"
41 #include "opt_polling.h"
43 #include <sys/param.h>
44 #include <sys/malloc.h>
46 #include <sys/systm.h>
48 #include <sys/protosw.h>
49 #include <sys/socket.h>
50 #include <sys/socketvar.h>
51 #include <sys/socketops.h>
52 #include <sys/protosw.h>
53 #include <sys/kernel.h>
54 #include <sys/sockio.h>
55 #include <sys/syslog.h>
56 #include <sys/sysctl.h>
57 #include <sys/domain.h>
58 #include <sys/thread.h>
59 #include <sys/thread2.h>
60 #include <sys/serialize.h>
63 #include <net/if_arp.h>
64 #include <net/if_dl.h>
65 #include <net/if_types.h>
66 #include <net/if_var.h>
67 #include <net/ifq_var.h>
68 #include <net/radix.h>
69 #include <net/route.h>
70 #include <net/if_clone.h>
71 #include <machine/stdarg.h>
73 #if defined(INET) || defined(INET6)
75 #include <netinet/in.h>
76 #include <netinet/in_var.h>
77 #include <netinet/if_ether.h>
79 #include <netinet6/in6_var.h>
80 #include <netinet6/in6_ifattach.h>
84 #if defined(COMPAT_43)
85 #include <emulation/43bsd/43bsd_socket.h>
86 #endif /* COMPAT_43 */
89 * Support for non-ALTQ interfaces.
91 static int ifq_classic_enqueue(struct ifaltq
*, struct mbuf
*,
92 struct altq_pktattr
*);
94 ifq_classic_dequeue(struct ifaltq
*, struct mbuf
*, int);
95 static int ifq_classic_request(struct ifaltq
*, int, void *);
98 * System initialization
100 static void if_attachdomain(void *);
101 static void if_attachdomain1(struct ifnet
*);
102 static int ifconf(u_long
, caddr_t
, struct ucred
*);
103 static void ifinit(void *);
104 static void if_slowtimo(void *);
105 static void link_rtrequest(int, struct rtentry
*, struct rt_addrinfo
*);
106 static int if_rtdel(struct radix_node
*, void *);
110 * XXX: declare here to avoid to include many inet6 related files..
111 * should be more generalized?
113 extern void nd6_setmtu(struct ifnet
*);
116 SYSCTL_NODE(_net
, PF_LINK
, link
, CTLFLAG_RW
, 0, "Link layers");
117 SYSCTL_NODE(_net_link
, 0, generic
, CTLFLAG_RW
, 0, "Generic link-management");
119 SYSINIT(interfaces
, SI_SUB_PROTO_IF
, SI_ORDER_FIRST
, ifinit
, NULL
)
121 MALLOC_DEFINE(M_IFADDR
, "ifaddr", "interface address");
122 MALLOC_DEFINE(M_IFMADDR
, "ether_multi", "link-level multicast address");
124 int ifqmaxlen
= IFQ_MAXLEN
;
125 struct ifnethead ifnet
= TAILQ_HEAD_INITIALIZER(ifnet
);
127 struct callout if_slowtimo_timer
;
130 struct ifnet
**ifindex2ifnet
= NULL
;
133 * Network interface utility routines.
135 * Routines with ifa_ifwith* names take sockaddr *'s as
144 callout_init(&if_slowtimo_timer
);
147 TAILQ_FOREACH(ifp
, &ifnet
, if_link
) {
148 if (ifp
->if_snd
.ifq_maxlen
== 0) {
149 if_printf(ifp
, "XXX: driver didn't set ifq_maxlen\n");
150 ifp
->if_snd
.ifq_maxlen
= ifqmaxlen
;
159 * Attach an interface to the list of "active" interfaces.
161 * The serializer is optional. If non-NULL access to the interface
165 if_attach(struct ifnet
*ifp
, lwkt_serialize_t serializer
)
167 unsigned socksize
, ifasize
;
168 int namelen
, masklen
;
169 struct sockaddr_dl
*sdl
;
173 static int if_indexlim
= 8;
176 * The serializer can be passed in from the device, allowing the
177 * same serializer to be used for both the interrupt interlock and
178 * the device queue. If not specified, the netif structure will
179 * use an embedded serializer.
181 if (serializer
== NULL
) {
182 serializer
= &ifp
->if_default_serializer
;
183 lwkt_serialize_init(serializer
);
185 ifp
->if_serializer
= serializer
;
187 #ifdef DEVICE_POLLING
188 /* Device is not in polling mode by default */
189 ifp
->if_poll_cpuid
= -1;
192 TAILQ_INSERT_TAIL(&ifnet
, ifp
, if_link
);
193 ifp
->if_index
= ++if_index
;
196 * The old code would work if the interface passed a pre-existing
197 * chain of ifaddrs to this code. We don't trust our callers to
198 * properly initialize the tailq, however, so we no longer allow
199 * this unlikely case.
201 TAILQ_INIT(&ifp
->if_addrhead
);
202 TAILQ_INIT(&ifp
->if_prefixhead
);
203 LIST_INIT(&ifp
->if_multiaddrs
);
204 getmicrotime(&ifp
->if_lastchange
);
205 if (ifindex2ifnet
== NULL
|| if_index
>= if_indexlim
) {
211 /* grow ifindex2ifnet */
212 n
= if_indexlim
* sizeof(*q
);
213 q
= kmalloc(n
, M_IFADDR
, M_WAITOK
| M_ZERO
);
215 bcopy(ifindex2ifnet
, q
, n
/2);
216 kfree(ifindex2ifnet
, M_IFADDR
);
221 ifindex2ifnet
[if_index
] = ifp
;
224 * create a Link Level name for this device
226 namelen
= strlen(ifp
->if_xname
);
227 #define _offsetof(t, m) ((int)((caddr_t)&((t *)0)->m))
228 masklen
= _offsetof(struct sockaddr_dl
, sdl_data
[0]) + namelen
;
229 socksize
= masklen
+ ifp
->if_addrlen
;
230 #define ROUNDUP(a) (1 + (((a) - 1) | (sizeof(long) - 1)))
231 if (socksize
< sizeof(*sdl
))
232 socksize
= sizeof(*sdl
);
233 socksize
= ROUNDUP(socksize
);
234 ifasize
= sizeof(struct ifaddr
) + 2 * socksize
;
235 ifa
= kmalloc(ifasize
, M_IFADDR
, M_WAITOK
| M_ZERO
);
236 sdl
= (struct sockaddr_dl
*)(ifa
+ 1);
237 sdl
->sdl_len
= socksize
;
238 sdl
->sdl_family
= AF_LINK
;
239 bcopy(ifp
->if_xname
, sdl
->sdl_data
, namelen
);
240 sdl
->sdl_nlen
= namelen
;
241 sdl
->sdl_index
= ifp
->if_index
;
242 sdl
->sdl_type
= ifp
->if_type
;
243 ifp
->if_lladdr
= ifa
;
245 ifa
->ifa_rtrequest
= link_rtrequest
;
246 ifa
->ifa_addr
= (struct sockaddr
*)sdl
;
247 sdl
= (struct sockaddr_dl
*)(socksize
+ (caddr_t
)sdl
);
248 ifa
->ifa_netmask
= (struct sockaddr
*)sdl
;
249 sdl
->sdl_len
= masklen
;
251 sdl
->sdl_data
[--namelen
] = 0xff;
252 TAILQ_INSERT_HEAD(&ifp
->if_addrhead
, ifa
, ifa_link
);
254 EVENTHANDLER_INVOKE(ifnet_attach_event
, ifp
);
258 ifq
->altq_disc
= NULL
;
259 ifq
->altq_flags
&= ALTQF_CANTCHANGE
;
260 ifq
->altq_tbr
= NULL
;
262 ifq_set_classic(ifq
);
264 if (!SLIST_EMPTY(&domains
))
265 if_attachdomain1(ifp
);
267 /* Announce the interface. */
268 rt_ifannouncemsg(ifp
, IFAN_ARRIVAL
);
272 if_attachdomain(void *dummy
)
277 TAILQ_FOREACH(ifp
, &ifnet
, if_list
)
278 if_attachdomain1(ifp
);
281 SYSINIT(domainifattach
, SI_SUB_PROTO_IFATTACHDOMAIN
, SI_ORDER_FIRST
,
282 if_attachdomain
, NULL
);
285 if_attachdomain1(struct ifnet
*ifp
)
291 /* address family dependent data region */
292 bzero(ifp
->if_afdata
, sizeof(ifp
->if_afdata
));
293 SLIST_FOREACH(dp
, &domains
, dom_next
)
294 if (dp
->dom_ifattach
)
295 ifp
->if_afdata
[dp
->dom_family
] =
296 (*dp
->dom_ifattach
)(ifp
);
301 * Purge all addresses whose type is _not_ AF_LINK
304 if_purgeaddrs_nolink(struct ifnet
*ifp
)
306 struct ifaddr
*ifa
, *next
;
308 TAILQ_FOREACH_MUTABLE(ifa
, &ifp
->if_addrhead
, ifa_link
, next
) {
309 /* Leave link ifaddr as it is */
310 if (ifa
->ifa_addr
->sa_family
== AF_LINK
)
313 /* XXX: Ugly!! ad hoc just for INET */
314 if (ifa
->ifa_addr
&& ifa
->ifa_addr
->sa_family
== AF_INET
) {
315 struct ifaliasreq ifr
;
317 bzero(&ifr
, sizeof ifr
);
318 ifr
.ifra_addr
= *ifa
->ifa_addr
;
319 if (ifa
->ifa_dstaddr
)
320 ifr
.ifra_broadaddr
= *ifa
->ifa_dstaddr
;
321 if (in_control(NULL
, SIOCDIFADDR
, (caddr_t
)&ifr
, ifp
,
327 if (ifa
->ifa_addr
&& ifa
->ifa_addr
->sa_family
== AF_INET6
) {
329 /* ifp_addrhead is already updated */
333 TAILQ_REMOVE(&ifp
->if_addrhead
, ifa
, ifa_link
);
339 * Detach an interface, removing it from the
340 * list of "active" interfaces.
343 if_detach(struct ifnet
*ifp
)
345 struct radix_node_head
*rnh
;
350 EVENTHANDLER_INVOKE(ifnet_detach_event
, ifp
);
353 * Remove routes and flush queues.
356 #ifdef DEVICE_POLLING
357 if (ifp
->if_flags
& IFF_POLLING
)
358 ether_poll_deregister(ifp
);
362 if (ifq_is_enabled(&ifp
->if_snd
))
363 altq_disable(&ifp
->if_snd
);
364 if (ifq_is_attached(&ifp
->if_snd
))
365 altq_detach(&ifp
->if_snd
);
368 * Clean up all addresses.
370 ifp
->if_lladdr
= NULL
;
372 if_purgeaddrs_nolink(ifp
);
373 if (!TAILQ_EMPTY(&ifp
->if_addrhead
)) {
376 ifa
= TAILQ_FIRST(&ifp
->if_addrhead
);
377 KASSERT(ifa
->ifa_addr
->sa_family
== AF_LINK
,
378 ("non-link ifaddr is left on if_addrhead"));
380 TAILQ_REMOVE(&ifp
->if_addrhead
, ifa
, ifa_link
);
382 KASSERT(TAILQ_EMPTY(&ifp
->if_addrhead
),
383 ("there are still ifaddrs left on if_addrhead"));
388 * Remove all IPv4 kernel structures related to ifp.
395 * Remove all IPv6 kernel structs related to ifp. This should be done
396 * before removing routing entries below, since IPv6 interface direct
397 * routes are expected to be removed by the IPv6-specific kernel API.
398 * Otherwise, the kernel will detect some inconsistency and bark it.
404 * Delete all remaining routes using this interface
405 * Unfortuneatly the only way to do this is to slog through
406 * the entire routing table looking for routes which point
407 * to this interface...oh well...
410 for (cpu
= 0; cpu
< ncpus2
; cpu
++) {
411 lwkt_migratecpu(cpu
);
412 for (i
= 1; i
<= AF_MAX
; i
++) {
413 if ((rnh
= rt_tables
[mycpuid
][i
]) == NULL
)
415 rnh
->rnh_walktree(rnh
, if_rtdel
, ifp
);
418 lwkt_migratecpu(origcpu
);
420 /* Announce that the interface is gone. */
421 rt_ifannouncemsg(ifp
, IFAN_DEPARTURE
);
423 SLIST_FOREACH(dp
, &domains
, dom_next
)
424 if (dp
->dom_ifdetach
&& ifp
->if_afdata
[dp
->dom_family
])
425 (*dp
->dom_ifdetach
)(ifp
,
426 ifp
->if_afdata
[dp
->dom_family
]);
429 * Remove interface from ifindex2ifp[] and maybe decrement if_index.
431 ifindex2ifnet
[ifp
->if_index
] = NULL
;
432 while (if_index
> 0 && ifindex2ifnet
[if_index
] == NULL
)
435 TAILQ_REMOVE(&ifnet
, ifp
, if_link
);
440 * Delete Routes for a Network Interface
442 * Called for each routing entry via the rnh->rnh_walktree() call above
443 * to delete all route entries referencing a detaching network interface.
446 * rn pointer to node in the routing table
447 * arg argument passed to rnh->rnh_walktree() - detaching interface
451 * errno failed - reason indicated
455 if_rtdel(struct radix_node
*rn
, void *arg
)
457 struct rtentry
*rt
= (struct rtentry
*)rn
;
458 struct ifnet
*ifp
= arg
;
461 if (rt
->rt_ifp
== ifp
) {
464 * Protect (sorta) against walktree recursion problems
467 if (!(rt
->rt_flags
& RTF_UP
))
470 err
= rtrequest(RTM_DELETE
, rt_key(rt
), rt
->rt_gateway
,
471 rt_mask(rt
), rt
->rt_flags
,
472 (struct rtentry
**) NULL
);
474 log(LOG_WARNING
, "if_rtdel: error %d\n", err
);
482 * Locate an interface based on a complete address.
485 ifa_ifwithaddr(struct sockaddr
*addr
)
490 TAILQ_FOREACH(ifp
, &ifnet
, if_link
)
491 TAILQ_FOREACH(ifa
, &ifp
->if_addrhead
, ifa_link
) {
492 if (ifa
->ifa_addr
->sa_family
!= addr
->sa_family
)
494 if (sa_equal(addr
, ifa
->ifa_addr
))
496 if ((ifp
->if_flags
& IFF_BROADCAST
) && ifa
->ifa_broadaddr
&&
497 /* IPv6 doesn't have broadcast */
498 ifa
->ifa_broadaddr
->sa_len
!= 0 &&
499 sa_equal(ifa
->ifa_broadaddr
, addr
))
502 return ((struct ifaddr
*)NULL
);
505 * Locate the point to point interface with a given destination address.
508 ifa_ifwithdstaddr(struct sockaddr
*addr
)
513 TAILQ_FOREACH(ifp
, &ifnet
, if_link
)
514 if (ifp
->if_flags
& IFF_POINTOPOINT
)
515 TAILQ_FOREACH(ifa
, &ifp
->if_addrhead
, ifa_link
) {
516 if (ifa
->ifa_addr
->sa_family
!= addr
->sa_family
)
518 if (ifa
->ifa_dstaddr
&&
519 sa_equal(addr
, ifa
->ifa_dstaddr
))
522 return ((struct ifaddr
*)NULL
);
526 * Find an interface on a specific network. If many, choice
527 * is most specific found.
530 ifa_ifwithnet(struct sockaddr
*addr
)
534 struct ifaddr
*ifa_maybe
= (struct ifaddr
*) 0;
535 u_int af
= addr
->sa_family
;
536 char *addr_data
= addr
->sa_data
, *cplim
;
539 * AF_LINK addresses can be looked up directly by their index number,
540 * so do that if we can.
543 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*)addr
;
545 if (sdl
->sdl_index
&& sdl
->sdl_index
<= if_index
)
546 return (ifindex2ifnet
[sdl
->sdl_index
]->if_lladdr
);
550 * Scan though each interface, looking for ones that have
551 * addresses in this address family.
553 TAILQ_FOREACH(ifp
, &ifnet
, if_link
) {
554 TAILQ_FOREACH(ifa
, &ifp
->if_addrhead
, ifa_link
) {
555 char *cp
, *cp2
, *cp3
;
557 if (ifa
->ifa_addr
->sa_family
!= af
)
559 if (af
== AF_INET
&& ifp
->if_flags
& IFF_POINTOPOINT
) {
561 * This is a bit broken as it doesn't
562 * take into account that the remote end may
563 * be a single node in the network we are
565 * The trouble is that we don't know the
566 * netmask for the remote end.
568 if (ifa
->ifa_dstaddr
!= NULL
&&
569 sa_equal(addr
, ifa
->ifa_dstaddr
))
573 * if we have a special address handler,
574 * then use it instead of the generic one.
576 if (ifa
->ifa_claim_addr
) {
577 if ((*ifa
->ifa_claim_addr
)(ifa
, addr
)) {
585 * Scan all the bits in the ifa's address.
586 * If a bit dissagrees with what we are
587 * looking for, mask it with the netmask
588 * to see if it really matters.
591 if (ifa
->ifa_netmask
== 0)
594 cp2
= ifa
->ifa_addr
->sa_data
;
595 cp3
= ifa
->ifa_netmask
->sa_data
;
596 cplim
= ifa
->ifa_netmask
->sa_len
+
597 (char *)ifa
->ifa_netmask
;
599 if ((*cp
++ ^ *cp2
++) & *cp3
++)
600 goto next
; /* next address! */
602 * If the netmask of what we just found
603 * is more specific than what we had before
604 * (if we had one) then remember the new one
605 * before continuing to search
606 * for an even better one.
608 if (ifa_maybe
== 0 ||
609 rn_refines((char *)ifa
->ifa_netmask
,
610 (char *)ifa_maybe
->ifa_netmask
))
619 * Find an interface address specific to an interface best matching
623 ifaof_ifpforaddr(struct sockaddr
*addr
, struct ifnet
*ifp
)
626 char *cp
, *cp2
, *cp3
;
628 struct ifaddr
*ifa_maybe
= 0;
629 u_int af
= addr
->sa_family
;
633 TAILQ_FOREACH(ifa
, &ifp
->if_addrhead
, ifa_link
) {
634 if (ifa
->ifa_addr
->sa_family
!= af
)
638 if (ifa
->ifa_netmask
== NULL
) {
639 if (sa_equal(addr
, ifa
->ifa_addr
) ||
640 (ifa
->ifa_dstaddr
!= NULL
&&
641 sa_equal(addr
, ifa
->ifa_dstaddr
)))
645 if (ifp
->if_flags
& IFF_POINTOPOINT
) {
646 if (sa_equal(addr
, ifa
->ifa_dstaddr
))
650 cp2
= ifa
->ifa_addr
->sa_data
;
651 cp3
= ifa
->ifa_netmask
->sa_data
;
652 cplim
= ifa
->ifa_netmask
->sa_len
+ (char *)ifa
->ifa_netmask
;
653 for (; cp3
< cplim
; cp3
++)
654 if ((*cp
++ ^ *cp2
++) & *cp3
)
664 * Default action when installing a route with a Link Level gateway.
665 * Lookup an appropriate real ifa to point to.
666 * This should be moved to /sys/net/link.c eventually.
669 link_rtrequest(int cmd
, struct rtentry
*rt
, struct rt_addrinfo
*info
)
672 struct sockaddr
*dst
;
675 if (cmd
!= RTM_ADD
|| (ifa
= rt
->rt_ifa
) == NULL
||
676 (ifp
= ifa
->ifa_ifp
) == NULL
|| (dst
= rt_key(rt
)) == NULL
)
678 ifa
= ifaof_ifpforaddr(dst
, ifp
);
683 if (ifa
->ifa_rtrequest
&& ifa
->ifa_rtrequest
!= link_rtrequest
)
684 ifa
->ifa_rtrequest(cmd
, rt
, info
);
689 * Mark an interface down and notify protocols of
691 * NOTE: must be called at splnet or eqivalent.
694 if_unroute(struct ifnet
*ifp
, int flag
, int fam
)
698 ifp
->if_flags
&= ~flag
;
699 getmicrotime(&ifp
->if_lastchange
);
700 TAILQ_FOREACH(ifa
, &ifp
->if_addrhead
, ifa_link
)
701 if (fam
== PF_UNSPEC
|| (fam
== ifa
->ifa_addr
->sa_family
))
702 pfctlinput(PRC_IFDOWN
, ifa
->ifa_addr
);
703 ifq_purge(&ifp
->if_snd
);
708 * Mark an interface up and notify protocols of
710 * NOTE: must be called at splnet or eqivalent.
713 if_route(struct ifnet
*ifp
, int flag
, int fam
)
717 ifp
->if_flags
|= flag
;
718 getmicrotime(&ifp
->if_lastchange
);
719 TAILQ_FOREACH(ifa
, &ifp
->if_addrhead
, ifa_link
)
720 if (fam
== PF_UNSPEC
|| (fam
== ifa
->ifa_addr
->sa_family
))
721 pfctlinput(PRC_IFUP
, ifa
->ifa_addr
);
729 * Mark an interface down and notify protocols of the transition. An
730 * interface going down is also considered to be a synchronizing event.
731 * We must ensure that all packet processing related to the interface
732 * has completed before we return so e.g. the caller can free the ifnet
733 * structure that the mbufs may be referencing.
735 * NOTE: must be called at splnet or eqivalent.
738 if_down(struct ifnet
*ifp
)
740 if_unroute(ifp
, IFF_UP
, AF_UNSPEC
);
741 netmsg_service_sync();
745 * Mark an interface up and notify protocols of
747 * NOTE: must be called at splnet or eqivalent.
750 if_up(struct ifnet
*ifp
)
753 if_route(ifp
, IFF_UP
, AF_UNSPEC
);
757 * Process a link state change.
758 * NOTE: must be called at splsoftnet or equivalent.
761 if_link_state_change(struct ifnet
*ifp
)
767 * Handle interface watchdog timer routines. Called
768 * from softclock, we decrement timers (if set) and
769 * call the appropriate interface routine on expiration.
772 if_slowtimo(void *arg
)
778 TAILQ_FOREACH(ifp
, &ifnet
, if_link
) {
779 if (ifp
->if_timer
== 0 || --ifp
->if_timer
)
781 if (ifp
->if_watchdog
) {
782 if (lwkt_serialize_try(ifp
->if_serializer
)) {
783 (*ifp
->if_watchdog
)(ifp
);
784 lwkt_serialize_exit(ifp
->if_serializer
);
786 /* try again next timeout */
794 callout_reset(&if_slowtimo_timer
, hz
/ IFNET_SLOWHZ
, if_slowtimo
, NULL
);
798 * Map interface name to
799 * interface structure pointer.
802 ifunit(const char *name
)
807 * Search all the interfaces for this name/number
810 TAILQ_FOREACH(ifp
, &ifnet
, if_link
) {
811 if (strncmp(ifp
->if_xname
, name
, IFNAMSIZ
) == 0)
819 * Map interface name in a sockaddr_dl to
820 * interface structure pointer.
823 if_withname(struct sockaddr
*sa
)
825 char ifname
[IFNAMSIZ
+1];
826 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*)sa
;
828 if ( (sa
->sa_family
!= AF_LINK
) || (sdl
->sdl_nlen
== 0) ||
829 (sdl
->sdl_nlen
> IFNAMSIZ
) )
833 * ifunit wants a null-terminated name. It may not be null-terminated
834 * in the sockaddr. We don't want to change the caller's sockaddr,
835 * and there might not be room to put the trailing null anyway, so we
836 * make a local copy that we know we can null terminate safely.
839 bcopy(sdl
->sdl_data
, ifname
, sdl
->sdl_nlen
);
840 ifname
[sdl
->sdl_nlen
] = '\0';
841 return ifunit(ifname
);
849 ifioctl(struct socket
*so
, u_long cmd
, caddr_t data
, struct ucred
*cred
)
857 size_t namelen
, onamelen
;
858 char new_name
[IFNAMSIZ
];
860 struct sockaddr_dl
*sdl
;
866 return (ifconf(cmd
, data
, cred
));
868 ifr
= (struct ifreq
*)data
;
873 if ((error
= suser_cred(cred
, 0)) != 0)
875 return ((cmd
== SIOCIFCREATE
) ?
876 if_clone_create(ifr
->ifr_name
, sizeof(ifr
->ifr_name
)) :
877 if_clone_destroy(ifr
->ifr_name
));
880 return (if_clone_list((struct if_clonereq
*)data
));
883 ifp
= ifunit(ifr
->ifr_name
);
889 ifr
->ifr_flags
= ifp
->if_flags
;
890 ifr
->ifr_flagshigh
= ifp
->if_flags
>> 16;
894 ifr
->ifr_reqcap
= ifp
->if_capabilities
;
895 ifr
->ifr_curcap
= ifp
->if_capenable
;
899 ifr
->ifr_metric
= ifp
->if_metric
;
903 ifr
->ifr_mtu
= ifp
->if_mtu
;
907 ifr
->ifr_phys
= ifp
->if_physical
;
911 #ifdef DEVICE_POLLING
912 ifr
->ifr_pollcpu
= ifp
->if_poll_cpuid
;
914 ifr
->ifr_pollcpu
= -1;
919 #ifdef DEVICE_POLLING
920 if ((ifp
->if_flags
& IFF_POLLING
) == 0)
921 ether_pollcpu_register(ifp
, ifr
->ifr_pollcpu
);
926 error
= suser_cred(cred
, 0);
929 new_flags
= (ifr
->ifr_flags
& 0xffff) |
930 (ifr
->ifr_flagshigh
<< 16);
931 if (ifp
->if_flags
& IFF_SMART
) {
932 /* Smart drivers twiddle their own routes */
933 } else if (ifp
->if_flags
& IFF_UP
&&
934 (new_flags
& IFF_UP
) == 0) {
938 } else if (new_flags
& IFF_UP
&&
939 (ifp
->if_flags
& IFF_UP
) == 0) {
945 #ifdef DEVICE_POLLING
946 if ((new_flags
^ ifp
->if_flags
) & IFF_POLLING
) {
947 if (new_flags
& IFF_POLLING
) {
948 ether_poll_register(ifp
);
950 ether_poll_deregister(ifp
);
955 ifp
->if_flags
= (ifp
->if_flags
& IFF_CANTCHANGE
) |
956 (new_flags
&~ IFF_CANTCHANGE
);
957 if (new_flags
& IFF_PPROMISC
) {
958 /* Permanently promiscuous mode requested */
959 ifp
->if_flags
|= IFF_PROMISC
;
960 } else if (ifp
->if_pcount
== 0) {
961 ifp
->if_flags
&= ~IFF_PROMISC
;
964 lwkt_serialize_enter(ifp
->if_serializer
);
965 ifp
->if_ioctl(ifp
, cmd
, data
, cred
);
966 lwkt_serialize_exit(ifp
->if_serializer
);
968 getmicrotime(&ifp
->if_lastchange
);
972 error
= suser_cred(cred
, 0);
975 if (ifr
->ifr_reqcap
& ~ifp
->if_capabilities
)
977 lwkt_serialize_enter(ifp
->if_serializer
);
978 ifp
->if_ioctl(ifp
, cmd
, data
, cred
);
979 lwkt_serialize_exit(ifp
->if_serializer
);
983 error
= suser_cred(cred
, 0);
986 error
= copyinstr(ifr
->ifr_data
, new_name
, IFNAMSIZ
, NULL
);
989 if (new_name
[0] == '\0')
991 if (ifunit(new_name
) != NULL
)
994 EVENTHANDLER_INVOKE(ifnet_detach_event
, ifp
);
996 /* Announce the departure of the interface. */
997 rt_ifannouncemsg(ifp
, IFAN_DEPARTURE
);
999 strlcpy(ifp
->if_xname
, new_name
, sizeof(ifp
->if_xname
));
1000 ifa
= TAILQ_FIRST(&ifp
->if_addrhead
);
1001 /* XXX IFA_LOCK(ifa); */
1002 sdl
= (struct sockaddr_dl
*)ifa
->ifa_addr
;
1003 namelen
= strlen(new_name
);
1004 onamelen
= sdl
->sdl_nlen
;
1006 * Move the address if needed. This is safe because we
1007 * allocate space for a name of length IFNAMSIZ when we
1008 * create this in if_attach().
1010 if (namelen
!= onamelen
) {
1011 bcopy(sdl
->sdl_data
+ onamelen
,
1012 sdl
->sdl_data
+ namelen
, sdl
->sdl_alen
);
1014 bcopy(new_name
, sdl
->sdl_data
, namelen
);
1015 sdl
->sdl_nlen
= namelen
;
1016 sdl
= (struct sockaddr_dl
*)ifa
->ifa_netmask
;
1017 bzero(sdl
->sdl_data
, onamelen
);
1018 while (namelen
!= 0)
1019 sdl
->sdl_data
[--namelen
] = 0xff;
1020 /* XXX IFA_UNLOCK(ifa) */
1022 EVENTHANDLER_INVOKE(ifnet_attach_event
, ifp
);
1024 /* Announce the return of the interface. */
1025 rt_ifannouncemsg(ifp
, IFAN_ARRIVAL
);
1029 error
= suser_cred(cred
, 0);
1032 ifp
->if_metric
= ifr
->ifr_metric
;
1033 getmicrotime(&ifp
->if_lastchange
);
1037 error
= suser_cred(cred
, 0);
1042 lwkt_serialize_enter(ifp
->if_serializer
);
1043 error
= ifp
->if_ioctl(ifp
, cmd
, data
, cred
);
1044 lwkt_serialize_exit(ifp
->if_serializer
);
1046 getmicrotime(&ifp
->if_lastchange
);
1051 u_long oldmtu
= ifp
->if_mtu
;
1053 error
= suser_cred(cred
, 0);
1056 if (ifp
->if_ioctl
== NULL
)
1057 return (EOPNOTSUPP
);
1058 if (ifr
->ifr_mtu
< IF_MINMTU
|| ifr
->ifr_mtu
> IF_MAXMTU
)
1060 lwkt_serialize_enter(ifp
->if_serializer
);
1061 error
= ifp
->if_ioctl(ifp
, cmd
, data
, cred
);
1062 lwkt_serialize_exit(ifp
->if_serializer
);
1064 getmicrotime(&ifp
->if_lastchange
);
1068 * If the link MTU changed, do network layer specific procedure.
1070 if (ifp
->if_mtu
!= oldmtu
) {
1080 error
= suser_cred(cred
, 0);
1084 /* Don't allow group membership on non-multicast interfaces. */
1085 if ((ifp
->if_flags
& IFF_MULTICAST
) == 0)
1088 /* Don't let users screw up protocols' entries. */
1089 if (ifr
->ifr_addr
.sa_family
!= AF_LINK
)
1092 if (cmd
== SIOCADDMULTI
) {
1093 struct ifmultiaddr
*ifma
;
1094 error
= if_addmulti(ifp
, &ifr
->ifr_addr
, &ifma
);
1096 error
= if_delmulti(ifp
, &ifr
->ifr_addr
);
1099 getmicrotime(&ifp
->if_lastchange
);
1102 case SIOCSIFPHYADDR
:
1103 case SIOCDIFPHYADDR
:
1105 case SIOCSIFPHYADDR_IN6
:
1107 case SIOCSLIFPHYADDR
:
1109 case SIOCSIFGENERIC
:
1110 error
= suser_cred(cred
, 0);
1113 if (ifp
->if_ioctl
== 0)
1114 return (EOPNOTSUPP
);
1115 lwkt_serialize_enter(ifp
->if_serializer
);
1116 error
= ifp
->if_ioctl(ifp
, cmd
, data
, cred
);
1117 lwkt_serialize_exit(ifp
->if_serializer
);
1119 getmicrotime(&ifp
->if_lastchange
);
1123 ifs
= (struct ifstat
*)data
;
1124 ifs
->ascii
[0] = '\0';
1126 case SIOCGIFPSRCADDR
:
1127 case SIOCGIFPDSTADDR
:
1128 case SIOCGLIFPHYADDR
:
1130 case SIOCGIFGENERIC
:
1131 if (ifp
->if_ioctl
== NULL
)
1132 return (EOPNOTSUPP
);
1133 lwkt_serialize_enter(ifp
->if_serializer
);
1134 error
= ifp
->if_ioctl(ifp
, cmd
, data
, cred
);
1135 lwkt_serialize_exit(ifp
->if_serializer
);
1139 error
= suser_cred(cred
, 0);
1142 return if_setlladdr(ifp
,
1143 ifr
->ifr_addr
.sa_data
, ifr
->ifr_addr
.sa_len
);
1146 oif_flags
= ifp
->if_flags
;
1147 if (so
->so_proto
== 0)
1148 return (EOPNOTSUPP
);
1150 error
= so_pru_control(so
, cmd
, data
, ifp
);
1157 case SIOCSIFDSTADDR
:
1159 case SIOCSIFBRDADDR
:
1160 case SIOCSIFNETMASK
:
1161 #if BYTE_ORDER != BIG_ENDIAN
1162 if (ifr
->ifr_addr
.sa_family
== 0 &&
1163 ifr
->ifr_addr
.sa_len
< 16) {
1164 ifr
->ifr_addr
.sa_family
= ifr
->ifr_addr
.sa_len
;
1165 ifr
->ifr_addr
.sa_len
= 16;
1168 if (ifr
->ifr_addr
.sa_len
== 0)
1169 ifr
->ifr_addr
.sa_len
= 16;
1177 case OSIOCGIFDSTADDR
:
1178 cmd
= SIOCGIFDSTADDR
;
1181 case OSIOCGIFBRDADDR
:
1182 cmd
= SIOCGIFBRDADDR
;
1185 case OSIOCGIFNETMASK
:
1186 cmd
= SIOCGIFNETMASK
;
1188 error
= so_pru_control(so
, cmd
, data
, ifp
);
1192 case OSIOCGIFDSTADDR
:
1193 case OSIOCGIFBRDADDR
:
1194 case OSIOCGIFNETMASK
:
1195 *(u_short
*)&ifr
->ifr_addr
= ifr
->ifr_addr
.sa_family
;
1199 #endif /* COMPAT_43 */
1201 if ((oif_flags
^ ifp
->if_flags
) & IFF_UP
) {
1203 DELAY(100);/* XXX: temporary workaround for fxp issue*/
1204 if (ifp
->if_flags
& IFF_UP
) {
1218 * Set/clear promiscuous mode on interface ifp based on the truth value
1219 * of pswitch. The calls are reference counted so that only the first
1220 * "on" request actually has an effect, as does the final "off" request.
1221 * Results are undefined if the "off" and "on" requests are not matched.
1224 ifpromisc(struct ifnet
*ifp
, int pswitch
)
1230 oldflags
= ifp
->if_flags
;
1231 if (ifp
->if_flags
& IFF_PPROMISC
) {
1232 /* Do nothing if device is in permanently promiscuous mode */
1233 ifp
->if_pcount
+= pswitch
? 1 : -1;
1238 * If the device is not configured up, we cannot put it in
1241 if ((ifp
->if_flags
& IFF_UP
) == 0)
1243 if (ifp
->if_pcount
++ != 0)
1245 ifp
->if_flags
|= IFF_PROMISC
;
1246 log(LOG_INFO
, "%s: promiscuous mode enabled\n",
1249 if (--ifp
->if_pcount
> 0)
1251 ifp
->if_flags
&= ~IFF_PROMISC
;
1252 log(LOG_INFO
, "%s: promiscuous mode disabled\n",
1255 ifr
.ifr_flags
= ifp
->if_flags
;
1256 ifr
.ifr_flagshigh
= ifp
->if_flags
>> 16;
1257 lwkt_serialize_enter(ifp
->if_serializer
);
1258 error
= ifp
->if_ioctl(ifp
, SIOCSIFFLAGS
, (caddr_t
)&ifr
,
1259 (struct ucred
*)NULL
);
1260 lwkt_serialize_exit(ifp
->if_serializer
);
1264 ifp
->if_flags
= oldflags
;
1269 * Return interface configuration
1270 * of system. List may be used
1271 * in later ioctl's (above) to get
1272 * other information.
1275 ifconf(u_long cmd
, caddr_t data
, struct ucred
*cred
)
1277 struct ifconf
*ifc
= (struct ifconf
*)data
;
1280 struct sockaddr
*sa
;
1281 struct ifreq ifr
, *ifrp
;
1282 int space
= ifc
->ifc_len
, error
= 0;
1284 ifrp
= ifc
->ifc_req
;
1285 TAILQ_FOREACH(ifp
, &ifnet
, if_link
) {
1288 if (space
<= sizeof ifr
)
1292 * Zero the stack declared structure first to prevent
1293 * memory disclosure.
1295 bzero(&ifr
, sizeof(ifr
));
1296 if (strlcpy(ifr
.ifr_name
, ifp
->if_xname
, sizeof(ifr
.ifr_name
))
1297 >= sizeof(ifr
.ifr_name
)) {
1298 error
= ENAMETOOLONG
;
1303 TAILQ_FOREACH(ifa
, &ifp
->if_addrhead
, ifa_link
) {
1304 if (space
<= sizeof ifr
)
1307 if (cred
->cr_prison
&&
1308 prison_if(cred
, sa
))
1312 if (cmd
== OSIOCGIFCONF
) {
1313 struct osockaddr
*osa
=
1314 (struct osockaddr
*)&ifr
.ifr_addr
;
1316 osa
->sa_family
= sa
->sa_family
;
1317 error
= copyout(&ifr
, ifrp
, sizeof ifr
);
1321 if (sa
->sa_len
<= sizeof(*sa
)) {
1323 error
= copyout(&ifr
, ifrp
, sizeof ifr
);
1326 if (space
< (sizeof ifr
) + sa
->sa_len
-
1329 space
-= sa
->sa_len
- sizeof(*sa
);
1330 error
= copyout(&ifr
, ifrp
,
1331 sizeof ifr
.ifr_name
);
1333 error
= copyout(sa
, &ifrp
->ifr_addr
,
1335 ifrp
= (struct ifreq
*)
1336 (sa
->sa_len
+ (caddr_t
)&ifrp
->ifr_addr
);
1340 space
-= sizeof ifr
;
1345 bzero(&ifr
.ifr_addr
, sizeof ifr
.ifr_addr
);
1346 error
= copyout(&ifr
, ifrp
, sizeof ifr
);
1349 space
-= sizeof ifr
;
1353 ifc
->ifc_len
-= space
;
1358 * Just like if_promisc(), but for all-multicast-reception mode.
1361 if_allmulti(struct ifnet
*ifp
, int onswitch
)
1369 if (ifp
->if_amcount
++ == 0) {
1370 ifp
->if_flags
|= IFF_ALLMULTI
;
1371 ifr
.ifr_flags
= ifp
->if_flags
;
1372 ifr
.ifr_flagshigh
= ifp
->if_flags
>> 16;
1373 lwkt_serialize_enter(ifp
->if_serializer
);
1374 error
= ifp
->if_ioctl(ifp
, SIOCSIFFLAGS
, (caddr_t
)&ifr
,
1375 (struct ucred
*)NULL
);
1376 lwkt_serialize_exit(ifp
->if_serializer
);
1379 if (ifp
->if_amcount
> 1) {
1382 ifp
->if_amcount
= 0;
1383 ifp
->if_flags
&= ~IFF_ALLMULTI
;
1384 ifr
.ifr_flags
= ifp
->if_flags
;
1385 ifr
.ifr_flagshigh
= ifp
->if_flags
>> 16;
1386 lwkt_serialize_enter(ifp
->if_serializer
);
1387 error
= ifp
->if_ioctl(ifp
, SIOCSIFFLAGS
, (caddr_t
)&ifr
,
1388 (struct ucred
*)NULL
);
1389 lwkt_serialize_exit(ifp
->if_serializer
);
1401 * Add a multicast listenership to the interface in question.
1402 * The link layer provides a routine which converts
1406 struct ifnet
*ifp
, /* interface to manipulate */
1407 struct sockaddr
*sa
, /* address to add */
1408 struct ifmultiaddr
**retifma
)
1410 struct sockaddr
*llsa
, *dupsa
;
1412 struct ifmultiaddr
*ifma
;
1415 * If the matching multicast address already exists
1416 * then don't add a new one, just add a reference
1418 LIST_FOREACH(ifma
, &ifp
->if_multiaddrs
, ifma_link
) {
1419 if (sa_equal(sa
, ifma
->ifma_addr
)) {
1420 ifma
->ifma_refcount
++;
1428 * Give the link layer a chance to accept/reject it, and also
1429 * find out which AF_LINK address this maps to, if it isn't one
1432 if (ifp
->if_resolvemulti
) {
1433 lwkt_serialize_enter(ifp
->if_serializer
);
1434 error
= ifp
->if_resolvemulti(ifp
, &llsa
, sa
);
1435 lwkt_serialize_exit(ifp
->if_serializer
);
1442 MALLOC(ifma
, struct ifmultiaddr
*, sizeof *ifma
, M_IFMADDR
, M_WAITOK
);
1443 MALLOC(dupsa
, struct sockaddr
*, sa
->sa_len
, M_IFMADDR
, M_WAITOK
);
1444 bcopy(sa
, dupsa
, sa
->sa_len
);
1446 ifma
->ifma_addr
= dupsa
;
1447 ifma
->ifma_lladdr
= llsa
;
1448 ifma
->ifma_ifp
= ifp
;
1449 ifma
->ifma_refcount
= 1;
1450 ifma
->ifma_protospec
= 0;
1451 rt_newmaddrmsg(RTM_NEWMADDR
, ifma
);
1454 * Some network interfaces can scan the address list at
1455 * interrupt time; lock them out.
1458 LIST_INSERT_HEAD(&ifp
->if_multiaddrs
, ifma
, ifma_link
);
1463 LIST_FOREACH(ifma
, &ifp
->if_multiaddrs
, ifma_link
) {
1464 if (sa_equal(ifma
->ifma_addr
, llsa
))
1468 ifma
->ifma_refcount
++;
1470 MALLOC(ifma
, struct ifmultiaddr
*, sizeof *ifma
,
1471 M_IFMADDR
, M_WAITOK
);
1472 MALLOC(dupsa
, struct sockaddr
*, llsa
->sa_len
,
1473 M_IFMADDR
, M_WAITOK
);
1474 bcopy(llsa
, dupsa
, llsa
->sa_len
);
1475 ifma
->ifma_addr
= dupsa
;
1476 ifma
->ifma_ifp
= ifp
;
1477 ifma
->ifma_refcount
= 1;
1479 LIST_INSERT_HEAD(&ifp
->if_multiaddrs
, ifma
, ifma_link
);
1484 * We are certain we have added something, so call down to the
1485 * interface to let them know about it.
1488 lwkt_serialize_enter(ifp
->if_serializer
);
1489 ifp
->if_ioctl(ifp
, SIOCADDMULTI
, 0, (struct ucred
*)NULL
);
1490 lwkt_serialize_exit(ifp
->if_serializer
);
1497 * Remove a reference to a multicast address on this interface. Yell
1498 * if the request does not match an existing membership.
1501 if_delmulti(struct ifnet
*ifp
, struct sockaddr
*sa
)
1503 struct ifmultiaddr
*ifma
;
1505 LIST_FOREACH(ifma
, &ifp
->if_multiaddrs
, ifma_link
)
1506 if (sa_equal(sa
, ifma
->ifma_addr
))
1511 if (ifma
->ifma_refcount
> 1) {
1512 ifma
->ifma_refcount
--;
1516 rt_newmaddrmsg(RTM_DELMADDR
, ifma
);
1517 sa
= ifma
->ifma_lladdr
;
1519 LIST_REMOVE(ifma
, ifma_link
);
1521 * Make sure the interface driver is notified
1522 * in the case of a link layer mcast group being left.
1524 if (ifma
->ifma_addr
->sa_family
== AF_LINK
&& sa
== 0) {
1525 lwkt_serialize_enter(ifp
->if_serializer
);
1526 ifp
->if_ioctl(ifp
, SIOCDELMULTI
, 0, (struct ucred
*)NULL
);
1527 lwkt_serialize_exit(ifp
->if_serializer
);
1530 kfree(ifma
->ifma_addr
, M_IFMADDR
);
1531 kfree(ifma
, M_IFMADDR
);
1536 * Now look for the link-layer address which corresponds to
1537 * this network address. It had been squirreled away in
1538 * ifma->ifma_lladdr for this purpose (so we don't have
1539 * to call ifp->if_resolvemulti() again), and we saved that
1540 * value in sa above. If some nasty deleted the
1541 * link-layer address out from underneath us, we can deal because
1542 * the address we stored was is not the same as the one which was
1543 * in the record for the link-layer address. (So we don't complain
1546 LIST_FOREACH(ifma
, &ifp
->if_multiaddrs
, ifma_link
)
1547 if (sa_equal(sa
, ifma
->ifma_addr
))
1552 if (ifma
->ifma_refcount
> 1) {
1553 ifma
->ifma_refcount
--;
1558 lwkt_serialize_enter(ifp
->if_serializer
);
1559 LIST_REMOVE(ifma
, ifma_link
);
1560 ifp
->if_ioctl(ifp
, SIOCDELMULTI
, 0, (struct ucred
*)NULL
);
1561 lwkt_serialize_exit(ifp
->if_serializer
);
1563 kfree(ifma
->ifma_addr
, M_IFMADDR
);
1564 kfree(sa
, M_IFMADDR
);
1565 kfree(ifma
, M_IFMADDR
);
1571 * Set the link layer address on an interface.
1573 * At this time we only support certain types of interfaces,
1574 * and we don't allow the length of the address to change.
1577 if_setlladdr(struct ifnet
*ifp
, const u_char
*lladdr
, int len
)
1579 struct sockaddr_dl
*sdl
;
1583 sdl
= IF_LLSOCKADDR(ifp
);
1586 if (len
!= sdl
->sdl_alen
) /* don't allow length to change */
1588 switch (ifp
->if_type
) {
1589 case IFT_ETHER
: /* these types use struct arpcom */
1592 bcopy(lladdr
, ((struct arpcom
*)ifp
->if_softc
)->ac_enaddr
, len
);
1593 bcopy(lladdr
, LLADDR(sdl
), len
);
1599 * If the interface is already up, we need
1600 * to re-init it in order to reprogram its
1603 lwkt_serialize_enter(ifp
->if_serializer
);
1604 if ((ifp
->if_flags
& IFF_UP
) != 0) {
1605 ifp
->if_flags
&= ~IFF_UP
;
1606 ifr
.ifr_flags
= ifp
->if_flags
;
1607 ifr
.ifr_flagshigh
= ifp
->if_flags
>> 16;
1608 ifp
->if_ioctl(ifp
, SIOCSIFFLAGS
, (caddr_t
)&ifr
,
1609 (struct ucred
*)NULL
);
1610 ifp
->if_flags
|= IFF_UP
;
1611 ifr
.ifr_flags
= ifp
->if_flags
;
1612 ifr
.ifr_flagshigh
= ifp
->if_flags
>> 16;
1613 ifp
->if_ioctl(ifp
, SIOCSIFFLAGS
, (caddr_t
)&ifr
,
1614 (struct ucred
*)NULL
);
1617 * Also send gratuitous ARPs to notify other nodes about
1618 * the address change.
1620 TAILQ_FOREACH(ifa
, &ifp
->if_addrhead
, ifa_link
) {
1621 if (ifa
->ifa_addr
!= NULL
&&
1622 ifa
->ifa_addr
->sa_family
== AF_INET
)
1623 arp_ifinit(ifp
, ifa
);
1627 lwkt_serialize_exit(ifp
->if_serializer
);
1631 struct ifmultiaddr
*
1632 ifmaof_ifpforaddr(struct sockaddr
*sa
, struct ifnet
*ifp
)
1634 struct ifmultiaddr
*ifma
;
1636 LIST_FOREACH(ifma
, &ifp
->if_multiaddrs
, ifma_link
)
1637 if (sa_equal(ifma
->ifma_addr
, sa
))
1644 * This function locates the first real ethernet MAC from a network
1645 * card and loads it into node, returning 0 on success or ENOENT if
1646 * no suitable interfaces were found. It is used by the uuid code to
1647 * generate a unique 6-byte number.
1650 if_getanyethermac(uint16_t *node
, int minlen
)
1653 struct sockaddr_dl
*sdl
;
1655 TAILQ_FOREACH(ifp
, &ifnet
, if_link
) {
1656 if (ifp
->if_type
!= IFT_ETHER
)
1658 sdl
= IF_LLSOCKADDR(ifp
);
1659 if (sdl
->sdl_alen
< minlen
)
1661 bcopy(((struct arpcom
*)ifp
->if_softc
)->ac_enaddr
, node
,
1669 * The name argument must be a pointer to storage which will last as
1670 * long as the interface does. For physical devices, the result of
1671 * device_get_name(dev) is a good choice and for pseudo-devices a
1672 * static string works well.
1675 if_initname(struct ifnet
*ifp
, const char *name
, int unit
)
1677 ifp
->if_dname
= name
;
1678 ifp
->if_dunit
= unit
;
1679 if (unit
!= IF_DUNIT_NONE
)
1680 ksnprintf(ifp
->if_xname
, IFNAMSIZ
, "%s%d", name
, unit
);
1682 strlcpy(ifp
->if_xname
, name
, IFNAMSIZ
);
1686 if_printf(struct ifnet
*ifp
, const char *fmt
, ...)
1691 retval
= kprintf("%s: ", ifp
->if_xname
);
1692 __va_start(ap
, fmt
);
1693 retval
+= kvprintf(fmt
, ap
);
1699 ifq_set_classic(struct ifaltq
*ifq
)
1701 ifq
->altq_enqueue
= ifq_classic_enqueue
;
1702 ifq
->altq_dequeue
= ifq_classic_dequeue
;
1703 ifq
->altq_request
= ifq_classic_request
;
1707 ifq_classic_enqueue(struct ifaltq
*ifq
, struct mbuf
*m
,
1708 struct altq_pktattr
*pa __unused
)
1711 if (IF_QFULL(ifq
)) {
1722 static struct mbuf
*
1723 ifq_classic_dequeue(struct ifaltq
*ifq
, struct mbuf
*mpolled
, int op
)
1736 panic("unsupported ALTQ dequeue op: %d", op
);
1739 KKASSERT(mpolled
== NULL
|| mpolled
== m
);
1744 ifq_classic_request(struct ifaltq
*ifq
, int req
, void *arg
)
1752 panic("unsupported ALTQ request: %d", req
);