2 * Copyright (c) 1982, 1986, 1989, 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 * From: @(#)if.h 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/net/if_var.h,v 1.18.2.16 2003/04/15 18:11:19 fjoe Exp $
35 * $DragonFly: src/sys/net/if_var.h,v 1.71 2008/11/22 04:00:53 sephe Exp $
38 #ifndef _NET_IF_VAR_H_
39 #define _NET_IF_VAR_H_
41 #ifndef _SYS_SERIALIZE_H_
42 #include <sys/serialize.h>
48 #include <sys/mutex.h>
52 * Structures defining a network interface, providing a packet
53 * transport mechanism (ala level 0 of the PUP protocols).
55 * Each interface accepts output datagrams of a specified maximum
56 * length, and provides higher level routines with input datagrams
57 * received from its medium.
59 * Output occurs when the routine if_output is called, with four parameters:
60 * ifp->if_output(ifp, m, dst, rt)
61 * Here m is the mbuf chain to be sent and dst is the destination address.
62 * The output routine encapsulates the supplied datagram if necessary,
63 * and then transmits it on its medium.
65 * On input, each interface unwraps the data received by it, and either
66 * places it on the input queue of a internetwork datagram routine
67 * and posts the associated software interrupt, or passes the datagram to
68 * the routine if_input. It is called with the mbuf chain as parameter:
69 * ifp->if_input(ifp, m)
70 * The input routine removes the protocol dependent header if necessary.
72 * Routines exist for locating interfaces by their addresses
73 * or for locating a interface on a certain network, as well as more general
74 * routing and gateway routines maintaining information used to locate
75 * interfaces. These routines live in the files if.c and route.c
79 * Forward structure declarations for function prototypes [sic].
88 struct lwkt_serialize;
89 struct ifaddr_container;
97 #include <sys/queue.h> /* get TAILQ macros */
99 #include <net/altq/if_altq.h>
102 #include <sys/eventhandler.h>
103 #include <sys/mbuf.h>
104 #include <sys/systm.h> /* XXX */
105 #include <sys/thread2.h>
108 #define IF_DUNIT_NONE -1
110 TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */
111 TAILQ_HEAD(ifaddrhead, ifaddr_container); /* instantiation is preserved in the list */
112 TAILQ_HEAD(ifprefixhead, ifprefix);
113 TAILQ_HEAD(ifmultihead, ifmultiaddr);
116 * Structure defining a queue for a network interface.
119 struct mbuf *ifq_head;
120 struct mbuf *ifq_tail;
127 * Note of DEVICE_POLLING
128 * 1) Any file(*.c) that depends on DEVICE_POLLING supports in this
129 * file should include opt_polling.h at its beginning.
130 * 2) When struct changes, which are conditioned by DEVICE_POLLING,
131 * are to be introduced, please keep the struct's size and layout
132 * same, no matter whether DEVICE_POLLING is defined or not.
133 * See ifnet.if_poll and ifnet.if_poll_unused for example.
136 #ifdef DEVICE_POLLING
137 enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS, POLL_DEREGISTER,
141 enum ifnet_serialize {
143 IFNET_SERIALIZE_MAIN,
144 IFNET_SERIALIZE_TX_BASE = 0x10000000,
145 IFNET_SERIALIZE_RX_BASE = 0x20000000
147 #define IFNET_SERIALIZE_TX IFNET_SERIALIZE_TX_BASE
148 #define IFNET_SERIALIZE_RX(i) (IFNET_SERIALIZE_RX_BASE + (i))
150 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
153 * Structure defining a network interface.
155 * (Would like to call this struct ``if'', but C isn't PL/1.)
159 * NB: For FreeBSD, it is assumed that each NIC driver's softc starts with
160 * one of these structures, typically held within an arpcom structure.
162 * struct <foo>_softc {
164 * struct ifnet ac_if;
170 * The assumption is used in a number of places, including many
171 * files in sys/net, device drivers, and sys/dev/mii.c:miibus_attach().
173 * Unfortunately devices' softc are opaque, so we depend on this layout
174 * to locate the struct ifnet from the softc in the generic code.
178 * ifnet is protected by calling if_serialize, if_tryserialize and
179 * if_deserialize serialize functions with the ifnet_serialize parameter.
180 * ifnet.if_snd is protected by its own spinlock. Callers of if_ioctl,
181 * if_watchdog, if_init, if_resolvemulti, and if_poll should call the
182 * ifnet serialize functions with IFNET_SERIALIZE_ALL. Callers of if_start
183 * sould call the ifnet serialize functions with IFNET_SERIALIZE_TX.
185 * FIXME: Device drivers usually use the same serializer for their interrupt
186 * FIXME: but this is not required.
188 * Caller of if_output must not serialize ifnet by calling ifnet serialize
189 * functions; if_output will call the ifnet serialize functions based on
190 * its own needs. Caller of if_input does not necessarily hold the related
193 * If a device driver installs the same serializer for its interrupt
194 * as for ifnet, then the driver only really needs to worry about further
195 * serialization in timeout based entry points. All other entry points
196 * will already be serialized. Older ISA drivers still using the old
197 * interrupt infrastructure will have to obtain and release the serializer
198 * in their interrupt routine themselves.
201 void *if_softc; /* pointer to driver state */
202 void *if_l2com; /* pointer to protocol bits */
203 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */
204 char if_xname[IFNAMSIZ]; /* external name (name + unit) */
205 const char *if_dname; /* driver name */
206 int if_dunit; /* unit or IF_DUNIT_NONE */
207 void *if_vlantrunks; /* vlan trunks */
208 struct ifaddrhead *if_addrheads; /* array[NCPU] of TAILQs of addresses per if */
209 int if_pcount; /* number of promiscuous listeners */
210 void *if_carp; /* carp interfaces */
211 struct bpf_if *if_bpf; /* packet filter structure */
212 u_short if_index; /* numeric abbreviation for this if */
213 short if_timer; /* time 'til if_watchdog called */
214 int if_flags; /* up/down, broadcast, etc. */
215 int if_capabilities; /* interface capabilities */
216 int if_capenable; /* enabled features */
217 void *if_linkmib; /* link-type-specific MIB data */
218 size_t if_linkmiblen; /* length of above data */
219 struct if_data if_data;
220 struct ifmultihead if_multiaddrs; /* multicast addresses configured */
221 int if_amcount; /* number of all-multicast requests */
222 /* procedure handles */
223 int (*if_output) /* output routine (enqueue) */
224 (struct ifnet *, struct mbuf *, struct sockaddr *,
226 void (*if_input) /* input routine from hardware driver */
227 (struct ifnet *, struct mbuf *);
228 void (*if_start) /* initiate output routine */
230 int (*if_ioctl) /* ioctl routine */
231 (struct ifnet *, u_long, caddr_t, struct ucred *);
232 void (*if_watchdog) /* timer routine */
234 void (*if_init) /* Init routine */
236 int (*if_resolvemulti) /* validate/resolve multicast */
237 (struct ifnet *, struct sockaddr **, struct sockaddr *);
238 int (*if_start_cpuid) /* cpuid to run if_start */
240 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */
241 #ifdef DEVICE_POLLING
242 void (*if_poll) /* IFF_POLLING support */
243 (struct ifnet *, enum poll_cmd, int);
247 void (*if_poll_unused)(void);
248 int if_poll_cpuid_used;
251 (struct ifnet *, enum ifnet_serialize);
252 void (*if_deserialize)
253 (struct ifnet *, enum ifnet_serialize);
254 int (*if_tryserialize)
255 (struct ifnet *, enum ifnet_serialize);
257 void (*if_serialize_assert)
258 (struct ifnet *, enum ifnet_serialize, boolean_t);
261 void (*if_serialize_unused)(void);
265 (struct ifnet *, struct ifpoll_info *);
268 void (*if_qpoll_unused)(void);
270 struct ifaltq if_snd; /* output queue (includes altq) */
271 struct ifprefixhead if_prefixhead; /* list of prefixes per if */
272 const uint8_t *if_broadcastaddr;
273 void *if_bridge; /* bridge glue */
274 void *if_afdata[AF_MAX];
275 struct ifaddr *if_lladdr;
276 struct lwkt_serialize *if_serializer; /* serializer or MP lock */
277 struct lwkt_serialize if_default_serializer; /* if not supplied */
278 struct mtx if_ioctl_mtx; /* high-level ioctl serializing mutex */
280 struct netmsg_base *if_start_nmsg; /* percpu msgs to sched if_start */
281 void *if_pf_kif; /* pf interface abstraction */
284 typedef void if_init_f_t (void *);
286 #define if_mtu if_data.ifi_mtu
287 #define if_type if_data.ifi_type
288 #define if_physical if_data.ifi_physical
289 #define if_addrlen if_data.ifi_addrlen
290 #define if_hdrlen if_data.ifi_hdrlen
291 #define if_metric if_data.ifi_metric
292 #define if_link_state if_data.ifi_link_state
293 #define if_baudrate if_data.ifi_baudrate
294 #define if_hwassist if_data.ifi_hwassist
295 #define if_ipackets if_data.ifi_ipackets
296 #define if_ierrors if_data.ifi_ierrors
297 #define if_opackets if_data.ifi_opackets
298 #define if_oerrors if_data.ifi_oerrors
299 #define if_collisions if_data.ifi_collisions
300 #define if_ibytes if_data.ifi_ibytes
301 #define if_obytes if_data.ifi_obytes
302 #define if_imcasts if_data.ifi_imcasts
303 #define if_omcasts if_data.ifi_omcasts
304 #define if_iqdrops if_data.ifi_iqdrops
305 #define if_noproto if_data.ifi_noproto
306 #define if_lastchange if_data.ifi_lastchange
307 #define if_recvquota if_data.ifi_recvquota
308 #define if_xmitquota if_data.ifi_xmitquota
309 #define if_rawoutput(if, m, sa) if_output(if, m, sa, NULL)
311 /* for compatibility with other BSDs */
312 #define if_list if_link
317 * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq)
318 * are queues of messages stored on ifqueue structures
319 * (defined above). Entries are added to and deleted from these structures
320 * by these macros, which should be called with ipl raised to splimp().
322 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
323 #define IF_DROP(ifq) ((ifq)->ifq_drops++)
324 #define IF_QLEN(ifq) ((ifq)->ifq_len)
325 #define IF_QEMPTY(ifq) (IF_QLEN(ifq) == 0)
327 #define IF_ENQUEUE(ifq, m) do { \
328 (m)->m_nextpkt = 0; \
329 if ((ifq)->ifq_tail == 0) \
330 (ifq)->ifq_head = m; \
332 (ifq)->ifq_tail->m_nextpkt = m; \
333 (ifq)->ifq_tail = m; \
337 #define IF_PREPEND(ifq, m) do { \
338 (m)->m_nextpkt = (ifq)->ifq_head; \
339 if ((ifq)->ifq_tail == 0) \
340 (ifq)->ifq_tail = (m); \
341 (ifq)->ifq_head = (m); \
345 #define IF_DEQUEUE(ifq, m) do { \
346 (m) = (ifq)->ifq_head; \
348 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \
349 (ifq)->ifq_tail = 0; \
350 (m)->m_nextpkt = 0; \
355 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head)
357 #define IF_DRAIN(ifq) do { \
360 IF_DEQUEUE(ifq, m); \
369 /* interface link layer address change event */
370 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *);
371 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t);
374 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) \
375 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, TRUE)
376 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) \
377 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, FALSE)
379 #define ASSERT_IFNET_SERIALIZED_TX(ifp) \
380 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_TX, TRUE)
381 #define ASSERT_IFNET_NOT_SERIALIZED_TX(ifp) \
382 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_TX, FALSE)
384 #define ASSERT_IFNET_SERIALIZED_MAIN(ifp) \
385 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_MAIN, TRUE)
386 #define ASSERT_IFNET_NOT_SERIALIZED_MAIN(ifp) \
387 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_MAIN, FALSE)
389 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) ((void)0)
390 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) ((void)0)
391 #define ASSERT_IFNET_SERIALIZED_TX(ifp) ((void)0)
392 #define ASSERT_IFNET_NOT_SERIALIZED_TX(ifp) ((void)0)
393 #define ASSERT_IFNET_SERIALIZED_MAIN(ifp) ((void)0)
394 #define ASSERT_IFNET_NOT_SERIALIZED_MAIN(ifp) ((void)0)
398 ifnet_serialize_all(struct ifnet *_ifp)
400 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_ALL);
404 ifnet_deserialize_all(struct ifnet *_ifp)
406 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_ALL);
410 ifnet_tryserialize_all(struct ifnet *_ifp)
412 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_ALL);
416 ifnet_serialize_tx(struct ifnet *_ifp)
418 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_TX);
422 ifnet_deserialize_tx(struct ifnet *_ifp)
424 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_TX);
428 ifnet_tryserialize_tx(struct ifnet *_ifp)
430 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_TX);
434 ifnet_serialize_main(struct ifnet *_ifp)
436 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_MAIN);
440 ifnet_deserialize_main(struct ifnet *_ifp)
442 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_MAIN);
446 ifnet_tryserialize_main(struct ifnet *_ifp)
448 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_MAIN);
452 * DEPRECATED - should not be used by any new driver. This code uses the
453 * old queueing interface and if_start ABI and does not use the ifp's
456 #define IF_HANDOFF(ifq, m, ifp) if_handoff(ifq, m, ifp, 0)
457 #define IF_HANDOFF_ADJ(ifq, m, ifp, adj) if_handoff(ifq, m, ifp, adj)
460 if_handoff(struct ifqueue *_ifq, struct mbuf *_m, struct ifnet *_ifp,
463 int _need_if_start = 0;
467 if (IF_QFULL(_ifq)) {
474 _ifp->if_obytes += _m->m_pkthdr.len + _adjust;
475 if (_m->m_flags & M_MCAST)
477 _need_if_start = !(_ifp->if_flags & IFF_OACTIVE);
479 IF_ENQUEUE(_ifq, _m);
480 if (_need_if_start) {
481 (*_ifp->if_start)(_ifp);
488 * 72 was chosen below because it is the size of a TCP/IP
489 * header (40) + the minimum mss (32).
492 #define IF_MAXMTU 65535
498 struct in_ifaddr_container {
499 struct in_ifaddr *ia;
500 LIST_ENTRY(in_ifaddr_container) ia_hash;
501 /* entry in bucket of inet addresses */
502 TAILQ_ENTRY(in_ifaddr_container) ia_link;
503 /* list of internet addresses */
504 struct ifaddr_container *ia_ifac; /* parent ifaddr_container */
507 struct ifaddr_container {
508 #define IFA_CONTAINER_MAGIC 0x19810219
509 #define IFA_CONTAINER_DEAD 0xc0dedead
510 uint32_t ifa_magic; /* IFA_CONTAINER_MAGIC */
512 TAILQ_ENTRY(ifaddr_container) ifa_link; /* queue macro glue */
513 u_int ifa_refcnt; /* references to this structure */
514 uint16_t ifa_listmask; /* IFA_LIST_ */
515 uint16_t ifa_prflags; /* protocol specific flags */
518 * Protocol specific states
521 struct in_ifaddr_container u_in_ifac;
525 #define IFA_LIST_IFADDRHEAD 0x01 /* on ifnet.if_addrheads[cpuid] */
526 #define IFA_LIST_IN_IFADDRHEAD 0x02 /* on in_ifaddrheads[cpuid] */
527 #define IFA_LIST_IN_IFADDRHASH 0x04 /* on in_ifaddrhashtbls[cpuid] */
529 #define IFA_PRF_FLAG0 0x01
530 #define IFA_PRF_FLAG1 0x02
531 #define IFA_PRF_FLAG2 0x04
532 #define IFA_PRF_FLAG3 0x08
535 * The ifaddr structure contains information about one address
536 * of an interface. They are maintained by the different address families,
537 * are allocated and attached when an address is set, and are linked
538 * together so all addresses for an interface can be located.
541 struct sockaddr *ifa_addr; /* address of interface */
542 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
543 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
544 struct sockaddr *ifa_netmask; /* used to determine subnet */
545 struct if_data if_data; /* not all members are meaningful */
546 struct ifnet *ifa_ifp; /* back-pointer to interface */
548 struct ifaddr_container *ifa_containers;
549 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
550 (int, struct rtentry *, struct rt_addrinfo *);
551 u_short ifa_flags; /* mostly rt_flags for cloning */
552 int ifa_ncnt; /* # of valid ifaddr_container */
553 int ifa_metric; /* cost of going out this interface */
555 struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */
557 int (*ifa_claim_addr) /* check if an addr goes to this if */
558 (struct ifaddr *, struct sockaddr *);
561 #define IFA_ROUTE RTF_UP /* route installed */
563 /* for compatibility with other BSDs */
564 #define ifa_list ifa_link
567 * The prefix structure contains information about one prefix
568 * of an interface. They are maintained by the different address families,
569 * are allocated and attached when an prefix or an address is set,
570 * and are linked together so all prefixes for an interface can be located.
573 struct sockaddr *ifpr_prefix; /* prefix of interface */
574 struct ifnet *ifpr_ifp; /* back-pointer to interface */
575 TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */
576 u_char ifpr_plen; /* prefix length in bits */
577 u_char ifpr_type; /* protocol dependent prefix type */
581 * Multicast address structure. This is analogous to the ifaddr
582 * structure except that it keeps track of multicast addresses.
583 * Also, the reference count here is a count of requests for this
584 * address, not a count of pointers to this structure.
587 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */
588 struct sockaddr *ifma_addr; /* address this membership is for */
589 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */
590 struct ifnet *ifma_ifp; /* back-pointer to interface */
591 u_int ifma_refcount; /* reference count */
592 void *ifma_protospec; /* protocol-specific state, if any */
597 #ifndef _SYS_SERIALIZE2_H_
598 #include <sys/serialize2.h>
607 /* interface address change event */
608 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *,
609 enum ifaddr_event, struct ifaddr *);
610 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t);
611 /* new interface attach event */
612 typedef void (*ifnet_attach_event_handler_t)(void *, struct ifnet *);
613 EVENTHANDLER_DECLARE(ifnet_attach_event, ifnet_attach_event_handler_t);
614 /* interface detach event */
615 typedef void (*ifnet_detach_event_handler_t)(void *, struct ifnet *);
616 EVENTHANDLER_DECLARE(ifnet_detach_event, ifnet_detach_event_handler_t);
622 char ifg_group[IFNAMSIZ];
625 int ifg_carp_demoted;
626 TAILQ_HEAD(, ifg_member) ifg_members;
627 TAILQ_ENTRY(ifg_group) ifg_next;
631 TAILQ_ENTRY(ifg_member) ifgm_next;
632 struct ifnet *ifgm_ifp;
636 struct ifg_group *ifgl_group;
637 TAILQ_ENTRY(ifg_list) ifgl_next;
640 /* group attach event */
641 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *);
642 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t);
643 /* group detach event */
644 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *);
645 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t);
646 /* group change event */
647 typedef void (*group_change_event_handler_t)(void *, const char *);
648 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t);
652 #define ASSERT_IFAC_VALID(ifac) do { \
653 KKASSERT((ifac)->ifa_magic == IFA_CONTAINER_MAGIC); \
654 KKASSERT((ifac)->ifa_refcnt > 0); \
657 #define ASSERT_IFAC_VALID(ifac) ((void)0)
661 _IFAREF(struct ifaddr *_ifa, int _cpu_id)
663 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id];
666 ASSERT_IFAC_VALID(_ifac);
672 IFAREF(struct ifaddr *_ifa)
674 _IFAREF(_ifa, mycpuid);
677 #include <sys/malloc.h>
679 MALLOC_DECLARE(M_IFADDR);
680 MALLOC_DECLARE(M_IFMADDR);
681 MALLOC_DECLARE(M_IFNET);
683 void ifac_free(struct ifaddr_container *, int);
686 _IFAFREE(struct ifaddr *_ifa, int _cpu_id)
688 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id];
691 ASSERT_IFAC_VALID(_ifac);
692 if (--_ifac->ifa_refcnt == 0)
693 ifac_free(_ifac, _cpu_id);
698 IFAFREE(struct ifaddr *_ifa)
700 _IFAFREE(_ifa, mycpuid);
703 struct lwkt_port *ifnet_portfn(int);
704 int ifnet_domsg(struct lwkt_msg *, int);
705 void ifnet_sendmsg(struct lwkt_msg *, int);
706 void ifnet_forwardmsg(struct lwkt_msg *, int);
707 struct ifnet *ifnet_byindex(unsigned short);
710 ifa_domsg(struct lwkt_msg *_lmsg, int _cpu)
712 return ifnet_domsg(_lmsg, _cpu);
716 ifa_sendmsg(struct lwkt_msg *_lmsg, int _cpu)
718 ifnet_sendmsg(_lmsg, _cpu);
722 ifa_forwardmsg(struct lwkt_msg *_lmsg, int _nextcpu)
724 ifnet_forwardmsg(_lmsg, _nextcpu);
728 ifnet_serialize_array_index(int _arrcnt, int _txoff, int _rxoff,
729 enum ifnet_serialize _slz)
733 if (_slz == IFNET_SERIALIZE_MAIN) {
735 } else if (_slz & IFNET_SERIALIZE_TX_BASE) {
736 _off = (_slz & ~IFNET_SERIALIZE_TX_BASE) + _txoff;
737 KASSERT(_off < _arrcnt,
738 ("invalid TX serializer %#x", _slz));
739 } else if (_slz & IFNET_SERIALIZE_RX_BASE) {
740 _off = (_slz & ~IFNET_SERIALIZE_RX_BASE) + _rxoff;
741 KASSERT(_off < _arrcnt,
742 ("invalid RX serializer %#x", _slz));
744 panic("unknown serializer %#x", _slz);
750 ifnet_serialize_array_enter(lwkt_serialize_t *_arr, int _arrcnt,
751 int _txoff, int _rxoff, enum ifnet_serialize _slz)
755 if (_slz == IFNET_SERIALIZE_ALL) {
756 lwkt_serialize_array_enter(_arr, _arrcnt, 0);
760 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz);
761 lwkt_serialize_enter(_arr[_off]);
765 ifnet_serialize_array_exit(lwkt_serialize_t *_arr, int _arrcnt,
766 int _txoff, int _rxoff, enum ifnet_serialize _slz)
770 if (_slz == IFNET_SERIALIZE_ALL) {
771 lwkt_serialize_array_exit(_arr, _arrcnt, 0);
775 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz);
776 lwkt_serialize_exit(_arr[_off]);
780 ifnet_serialize_array_try(lwkt_serialize_t *_arr, int _arrcnt,
781 int _txoff, int _rxoff, enum ifnet_serialize _slz)
785 if (_slz == IFNET_SERIALIZE_ALL)
786 return lwkt_serialize_array_try(_arr, _arrcnt, 0);
788 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz);
789 return lwkt_serialize_try(_arr[_off]);
795 ifnet_serialize_array_assert(lwkt_serialize_t *_arr, int _arrcnt,
796 int _txoff, int _rxoff, enum ifnet_serialize _slz, boolean_t _serialized)
800 if (_slz == IFNET_SERIALIZE_ALL) {
804 for (_i = 0; _i < _arrcnt; ++_i)
805 ASSERT_SERIALIZED(_arr[_i]);
807 for (_i = 0; _i < _arrcnt; ++_i)
808 ASSERT_NOT_SERIALIZED(_arr[_i]);
813 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz);
815 ASSERT_SERIALIZED(_arr[_off]);
817 ASSERT_NOT_SERIALIZED(_arr[_off]);
820 #endif /* INVARIANTS */
822 #define REINPUT_KEEPRCVIF 0x0001 /* ether_reinput_oncpu() */
823 #define REINPUT_RUNBPF 0x0002 /* ether_reinput_oncpu() */
825 extern struct ifnethead ifnet;
826 extern struct ifnet **ifindex2ifnet;
827 extern int ifqmaxlen;
828 extern struct ifnet loif[];
831 void ether_ifattach(struct ifnet *, uint8_t *, struct lwkt_serialize *);
832 void ether_ifattach_bpf(struct ifnet *, uint8_t *, u_int, u_int,
833 struct lwkt_serialize *);
834 void ether_ifdetach(struct ifnet *);
835 void ether_demux(struct mbuf *);
836 void ether_demux_oncpu(struct ifnet *, struct mbuf *);
837 void ether_reinput_oncpu(struct ifnet *, struct mbuf *, int);
838 void ether_input_pkt(struct ifnet *, struct mbuf *, const struct pktinfo *);
839 int ether_output_frame(struct ifnet *, struct mbuf *);
840 int ether_ioctl(struct ifnet *, u_long, caddr_t);
841 struct ifnet *ether_bridge_interface(struct ifnet *ifp);
842 uint32_t ether_crc32_le(const uint8_t *, size_t);
843 uint32_t ether_crc32_be(const uint8_t *, size_t);
845 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **);
846 int if_allmulti(struct ifnet *, int);
847 void if_attach(struct ifnet *, struct lwkt_serialize *);
848 int if_delmulti(struct ifnet *, struct sockaddr *);
849 void if_delallmulti(struct ifnet *ifp);
850 void if_purgeaddrs_nolink(struct ifnet *);
851 void if_detach(struct ifnet *);
852 void if_down(struct ifnet *);
853 void if_link_state_change(struct ifnet *);
854 void if_initname(struct ifnet *, const char *, int);
855 int if_getanyethermac(uint16_t *, int);
856 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3);
857 struct ifnet *if_alloc(uint8_t);
858 void if_free(struct ifnet *);
859 void if_route(struct ifnet *, int flag, int fam);
860 int if_setlladdr(struct ifnet *, const u_char *, int);
861 void if_unroute(struct ifnet *, int flag, int fam);
862 void if_up(struct ifnet *);
863 /*void ifinit(void);*/ /* declared in systm.h for main() */
864 int ifioctl(struct socket *, u_long, caddr_t, struct ucred *);
865 int ifpromisc(struct ifnet *, int);
866 struct ifnet *ifunit(const char *);
867 struct ifnet *if_withname(struct sockaddr *);
869 struct ifg_group *if_creategroup(const char *);
870 int if_addgroup(struct ifnet *, const char *);
871 int if_delgroup(struct ifnet *, const char *);
872 int if_getgroup(caddr_t, struct ifnet *);
873 int if_getgroupmembers(caddr_t);
875 struct ifaddr *ifa_ifwithaddr(struct sockaddr *);
876 struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *);
877 struct ifaddr *ifa_ifwithnet(struct sockaddr *);
878 struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *);
879 struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *);
881 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp);
882 typedef void if_com_free_t(void *com, u_char type);
883 void if_register_com_alloc(u_char, if_com_alloc_t *a, if_com_free_t *);
884 void if_deregister_com_alloc(u_char);
886 void *ifa_create(int, int);
887 void ifa_destroy(struct ifaddr *);
888 void ifa_iflink(struct ifaddr *, struct ifnet *, int);
889 void ifa_ifunlink(struct ifaddr *, struct ifnet *);
891 struct ifaddr *ifaddr_byindex(unsigned short);
893 struct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *);
894 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen);
895 void if_devstart(struct ifnet *ifp);
896 int if_ring_count2(int cnt, int cnt_max);
898 #define IF_LLSOCKADDR(ifp) \
899 ((struct sockaddr_dl *)(ifp)->if_lladdr->ifa_addr)
900 #define IF_LLADDR(ifp) LLADDR(IF_LLSOCKADDR(ifp))
902 #ifdef DEVICE_POLLING
903 typedef void poll_handler_t (struct ifnet *ifp, enum poll_cmd cmd, int count);
904 int ether_poll_register(struct ifnet *);
905 int ether_poll_deregister(struct ifnet *);
906 int ether_pollcpu_register(struct ifnet *, int);
907 #endif /* DEVICE_POLLING */
910 int ifpoll_register(struct ifnet *);
911 int ifpoll_deregister(struct ifnet *);
912 #endif /* IFPOLL_ENABLE */
916 #endif /* !_NET_IF_VAR_H_ */