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>
49 * Structures defining a network interface, providing a packet
50 * transport mechanism (ala level 0 of the PUP protocols).
52 * Each interface accepts output datagrams of a specified maximum
53 * length, and provides higher level routines with input datagrams
54 * received from its medium.
56 * Output occurs when the routine if_output is called, with four parameters:
57 * ifp->if_output(ifp, m, dst, rt)
58 * Here m is the mbuf chain to be sent and dst is the destination address.
59 * The output routine encapsulates the supplied datagram if necessary,
60 * and then transmits it on its medium.
62 * On input, each interface unwraps the data received by it, and either
63 * places it on the input queue of a internetwork datagram routine
64 * and posts the associated software interrupt, or passes the datagram to
65 * the routine if_input. It is called with the mbuf chain as parameter:
66 * ifp->if_input(ifp, m)
67 * The input routine removes the protocol dependent header if necessary.
69 * Routines exist for locating interfaces by their addresses
70 * or for locating a interface on a certain network, as well as more general
71 * routing and gateway routines maintaining information used to locate
72 * interfaces. These routines live in the files if.c and route.c
76 * Forward structure declarations for function prototypes [sic].
86 struct lwkt_serialize;
87 struct ifaddr_container;
95 #include <sys/queue.h> /* get TAILQ macros */
97 #include <net/altq/if_altq.h>
100 #include <sys/eventhandler.h>
101 #include <sys/mbuf.h>
102 #include <sys/systm.h> /* XXX */
103 #include <sys/thread2.h>
106 #define IF_DUNIT_NONE -1
108 TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */
109 TAILQ_HEAD(ifaddrhead, ifaddr_container); /* instantiation is preserved in the list */
110 TAILQ_HEAD(ifprefixhead, ifprefix);
111 TAILQ_HEAD(ifmultihead, ifmultiaddr);
114 * Structure defining a queue for a network interface.
117 struct mbuf *ifq_head;
118 struct mbuf *ifq_tail;
125 * Note of DEVICE_POLLING
126 * 1) Any file(*.c) that depends on DEVICE_POLLING supports in this
127 * file should include opt_polling.h at its beginning.
128 * 2) When struct changes, which are conditioned by DEVICE_POLLING,
129 * are to be introduced, please keep the struct's size and layout
130 * same, no matter whether DEVICE_POLLING is defined or not.
131 * See ifnet.if_poll and ifnet.if_poll_unused for example.
134 #ifdef DEVICE_POLLING
135 enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS, POLL_DEREGISTER,
139 enum ifnet_serialize {
141 IFNET_SERIALIZE_MAIN,
142 IFNET_SERIALIZE_TX_BASE = 0x10000000,
143 IFNET_SERIALIZE_RX_BASE = 0x20000000
145 #define IFNET_SERIALIZE_TX IFNET_SERIALIZE_TX_BASE
146 #define IFNET_SERIALIZE_RX(i) (IFNET_SERIALIZE_RX_BASE + (i))
149 * Structure defining a network interface.
151 * (Would like to call this struct ``if'', but C isn't PL/1.)
155 * NB: For FreeBSD, it is assumed that each NIC driver's softc starts with
156 * one of these structures, typically held within an arpcom structure.
158 * struct <foo>_softc {
160 * struct ifnet ac_if;
166 * The assumption is used in a number of places, including many
167 * files in sys/net, device drivers, and sys/dev/mii.c:miibus_attach().
169 * Unfortunately devices' softc are opaque, so we depend on this layout
170 * to locate the struct ifnet from the softc in the generic code.
174 * ifnet is protected by calling if_serialize, if_tryserialize and
175 * if_deserialize serialize functions with the ifnet_serialize parameter.
176 * ifnet.if_snd is protected by its own spinlock. Callers of if_ioctl,
177 * if_watchdog, if_init, if_resolvemulti, and if_poll should call the
178 * ifnet serialize functions with IFNET_SERIALIZE_ALL. Callers of if_start
179 * sould call the ifnet serialize functions with IFNET_SERIALIZE_TX.
181 * FIXME: Device drivers usually use the same serializer for their interrupt
182 * FIXME: but this is not required.
184 * Caller of if_output must not serialize ifnet by calling ifnet serialize
185 * functions; if_output will call the ifnet serialize functions based on
186 * its own needs. Caller of if_input does not necessarily hold the related
189 * If a device driver installs the same serializer for its interrupt
190 * as for ifnet, then the driver only really needs to worry about further
191 * serialization in timeout based entry points. All other entry points
192 * will already be serialized. Older ISA drivers still using the old
193 * interrupt infrastructure will have to obtain and release the serializer
194 * in their interrupt routine themselves.
197 void *if_softc; /* pointer to driver state */
198 void *if_l2com; /* pointer to protocol bits */
199 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */
200 char if_xname[IFNAMSIZ]; /* external name (name + unit) */
201 const char *if_dname; /* driver name */
202 int if_dunit; /* unit or IF_DUNIT_NONE */
203 void *if_vlantrunks; /* vlan trunks */
204 struct ifaddrhead *if_addrheads; /* array[NCPU] of TAILQs of addresses per if */
205 int if_pcount; /* number of promiscuous listeners */
206 void *if_carp; /* carp interfaces */
207 struct bpf_if *if_bpf; /* packet filter structure */
208 u_short if_index; /* numeric abbreviation for this if */
209 short if_timer; /* time 'til if_watchdog called */
210 int if_flags; /* up/down, broadcast, etc. */
211 int if_capabilities; /* interface capabilities */
212 int if_capenable; /* enabled features */
213 void *if_linkmib; /* link-type-specific MIB data */
214 size_t if_linkmiblen; /* length of above data */
215 struct if_data if_data;
216 struct ifmultihead if_multiaddrs; /* multicast addresses configured */
217 int if_amcount; /* number of all-multicast requests */
218 /* procedure handles */
219 int (*if_output) /* output routine (enqueue) */
220 (struct ifnet *, struct mbuf *, struct sockaddr *,
222 void (*if_input) /* input routine from hardware driver */
223 (struct ifnet *, struct mbuf *);
224 void (*if_start) /* initiate output routine */
226 int (*if_ioctl) /* ioctl routine */
227 (struct ifnet *, u_long, caddr_t, struct ucred *);
228 void (*if_watchdog) /* timer routine */
230 void (*if_init) /* Init routine */
232 int (*if_resolvemulti) /* validate/resolve multicast */
233 (struct ifnet *, struct sockaddr **, struct sockaddr *);
234 int (*if_start_cpuid) /* cpuid to run if_start */
236 #ifdef DEVICE_POLLING
237 void (*if_poll) /* IFF_POLLING support */
238 (struct ifnet *, enum poll_cmd, int);
242 void (*if_poll_unused)(void);
243 int if_poll_cpuid_used;
246 (struct ifnet *, enum ifnet_serialize);
247 void (*if_deserialize)
248 (struct ifnet *, enum ifnet_serialize);
249 int (*if_tryserialize)
250 (struct ifnet *, enum ifnet_serialize);
252 void (*if_serialize_assert)
253 (struct ifnet *, enum ifnet_serialize, boolean_t);
256 void (*if_serialize_unused)(void);
260 (struct ifnet *, struct ifpoll_info *);
263 void (*if_qpoll_unused)(void);
265 struct ifaltq if_snd; /* output queue (includes altq) */
266 struct ifprefixhead if_prefixhead; /* list of prefixes per if */
267 const uint8_t *if_broadcastaddr;
268 void *if_bridge; /* bridge glue */
269 void *if_afdata[AF_MAX];
270 struct ifaddr *if_lladdr;
271 struct lwkt_serialize *if_serializer; /* serializer or MP lock */
272 struct lwkt_serialize if_default_serializer; /* if not supplied */
274 struct netmsg *if_start_nmsg; /* percpu messages to schedule if_start */
276 typedef void if_init_f_t (void *);
278 #define if_mtu if_data.ifi_mtu
279 #define if_type if_data.ifi_type
280 #define if_physical if_data.ifi_physical
281 #define if_addrlen if_data.ifi_addrlen
282 #define if_hdrlen if_data.ifi_hdrlen
283 #define if_metric if_data.ifi_metric
284 #define if_link_state if_data.ifi_link_state
285 #define if_baudrate if_data.ifi_baudrate
286 #define if_hwassist if_data.ifi_hwassist
287 #define if_ipackets if_data.ifi_ipackets
288 #define if_ierrors if_data.ifi_ierrors
289 #define if_opackets if_data.ifi_opackets
290 #define if_oerrors if_data.ifi_oerrors
291 #define if_collisions if_data.ifi_collisions
292 #define if_ibytes if_data.ifi_ibytes
293 #define if_obytes if_data.ifi_obytes
294 #define if_imcasts if_data.ifi_imcasts
295 #define if_omcasts if_data.ifi_omcasts
296 #define if_iqdrops if_data.ifi_iqdrops
297 #define if_noproto if_data.ifi_noproto
298 #define if_lastchange if_data.ifi_lastchange
299 #define if_recvquota if_data.ifi_recvquota
300 #define if_xmitquota if_data.ifi_xmitquota
301 #define if_rawoutput(if, m, sa) if_output(if, m, sa, NULL)
303 /* for compatibility with other BSDs */
304 #define if_list if_link
308 * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq)
309 * are queues of messages stored on ifqueue structures
310 * (defined above). Entries are added to and deleted from these structures
311 * by these macros, which should be called with ipl raised to splimp().
313 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
314 #define IF_DROP(ifq) ((ifq)->ifq_drops++)
315 #define IF_QLEN(ifq) ((ifq)->ifq_len)
316 #define IF_QEMPTY(ifq) (IF_QLEN(ifq) == 0)
317 #define IF_ENQUEUE(ifq, m) do { \
318 (m)->m_nextpkt = 0; \
319 if ((ifq)->ifq_tail == 0) \
320 (ifq)->ifq_head = m; \
322 (ifq)->ifq_tail->m_nextpkt = m; \
323 (ifq)->ifq_tail = m; \
326 #define IF_PREPEND(ifq, m) do { \
327 (m)->m_nextpkt = (ifq)->ifq_head; \
328 if ((ifq)->ifq_tail == 0) \
329 (ifq)->ifq_tail = (m); \
330 (ifq)->ifq_head = (m); \
333 #define IF_DEQUEUE(ifq, m) do { \
334 (m) = (ifq)->ifq_head; \
336 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \
337 (ifq)->ifq_tail = 0; \
338 (m)->m_nextpkt = 0; \
343 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head)
345 #define IF_DRAIN(ifq) do { \
348 IF_DEQUEUE(ifq, m); \
357 /* interface link layer address change event */
358 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *);
359 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t);
362 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) \
363 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, TRUE)
364 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) \
365 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, FALSE)
367 #define ASSERT_IFNET_SERIALIZED_TX(ifp) \
368 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_TX, TRUE)
369 #define ASSERT_IFNET_NOT_SERIALIZED_TX(ifp) \
370 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_TX, FALSE)
372 #define ASSERT_IFNET_SERIALIZED_MAIN(ifp) \
373 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_MAIN, TRUE)
374 #define ASSERT_IFNET_NOT_SERIALIZED_MAIN(ifp) \
375 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_MAIN, FALSE)
377 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) ((void)0)
378 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) ((void)0)
379 #define ASSERT_IFNET_SERIALIZED_TX(ifp) ((void)0)
380 #define ASSERT_IFNET_NOT_SERIALIZED_TX(ifp) ((void)0)
381 #define ASSERT_IFNET_SERIALIZED_MAIN(ifp) ((void)0)
382 #define ASSERT_IFNET_NOT_SERIALIZED_MAIN(ifp) ((void)0)
386 ifnet_serialize_all(struct ifnet *_ifp)
388 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_ALL);
392 ifnet_deserialize_all(struct ifnet *_ifp)
394 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_ALL);
398 ifnet_tryserialize_all(struct ifnet *_ifp)
400 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_ALL);
404 ifnet_serialize_tx(struct ifnet *_ifp)
406 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_TX);
410 ifnet_deserialize_tx(struct ifnet *_ifp)
412 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_TX);
416 ifnet_tryserialize_tx(struct ifnet *_ifp)
418 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_TX);
422 ifnet_serialize_main(struct ifnet *_ifp)
424 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_MAIN);
428 ifnet_deserialize_main(struct ifnet *_ifp)
430 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_MAIN);
434 ifnet_tryserialize_main(struct ifnet *_ifp)
436 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_MAIN);
440 * DEPRECATED - should not be used by any new driver. This code uses the
441 * old queueing interface and if_start ABI and does not use the ifp's
444 #define IF_HANDOFF(ifq, m, ifp) if_handoff(ifq, m, ifp, 0)
445 #define IF_HANDOFF_ADJ(ifq, m, ifp, adj) if_handoff(ifq, m, ifp, adj)
448 if_handoff(struct ifqueue *_ifq, struct mbuf *_m, struct ifnet *_ifp,
451 int _need_if_start = 0;
455 if (IF_QFULL(_ifq)) {
462 _ifp->if_obytes += _m->m_pkthdr.len + _adjust;
463 if (_m->m_flags & M_MCAST)
465 _need_if_start = !(_ifp->if_flags & IFF_OACTIVE);
467 IF_ENQUEUE(_ifq, _m);
468 if (_need_if_start) {
469 (*_ifp->if_start)(_ifp);
476 * 72 was chosen below because it is the size of a TCP/IP
477 * header (40) + the minimum mss (32).
480 #define IF_MAXMTU 65535
486 struct in_ifaddr_container {
487 struct in_ifaddr *ia;
488 LIST_ENTRY(in_ifaddr_container) ia_hash;
489 /* entry in bucket of inet addresses */
490 TAILQ_ENTRY(in_ifaddr_container) ia_link;
491 /* list of internet addresses */
492 struct ifaddr_container *ia_ifac; /* parent ifaddr_container */
495 struct ifaddr_container {
496 #define IFA_CONTAINER_MAGIC 0x19810219
497 #define IFA_CONTAINER_DEAD 0xc0dedead
498 uint32_t ifa_magic; /* IFA_CONTAINER_MAGIC */
500 TAILQ_ENTRY(ifaddr_container) ifa_link; /* queue macro glue */
501 u_int ifa_refcnt; /* references to this structure */
502 uint16_t ifa_listmask; /* IFA_LIST_ */
503 uint16_t ifa_prflags; /* protocol specific flags */
506 * Protocol specific states
509 struct in_ifaddr_container u_in_ifac;
513 #define IFA_LIST_IFADDRHEAD 0x01 /* on ifnet.if_addrheads[cpuid] */
514 #define IFA_LIST_IN_IFADDRHEAD 0x02 /* on in_ifaddrheads[cpuid] */
515 #define IFA_LIST_IN_IFADDRHASH 0x04 /* on in_ifaddrhashtbls[cpuid] */
517 #define IFA_PRF_FLAG0 0x01
518 #define IFA_PRF_FLAG1 0x02
519 #define IFA_PRF_FLAG2 0x04
520 #define IFA_PRF_FLAG3 0x08
523 * The ifaddr structure contains information about one address
524 * of an interface. They are maintained by the different address families,
525 * are allocated and attached when an address is set, and are linked
526 * together so all addresses for an interface can be located.
529 struct sockaddr *ifa_addr; /* address of interface */
530 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
531 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
532 struct sockaddr *ifa_netmask; /* used to determine subnet */
533 struct if_data if_data; /* not all members are meaningful */
534 struct ifnet *ifa_ifp; /* back-pointer to interface */
536 struct ifaddr_container *ifa_containers;
537 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
538 (int, struct rtentry *, struct rt_addrinfo *);
539 u_short ifa_flags; /* mostly rt_flags for cloning */
540 int ifa_ncnt; /* # of valid ifaddr_container */
541 int ifa_metric; /* cost of going out this interface */
543 struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */
545 int (*ifa_claim_addr) /* check if an addr goes to this if */
546 (struct ifaddr *, struct sockaddr *);
549 #define IFA_ROUTE RTF_UP /* route installed */
551 /* for compatibility with other BSDs */
552 #define ifa_list ifa_link
555 * The prefix structure contains information about one prefix
556 * of an interface. They are maintained by the different address families,
557 * are allocated and attached when an prefix or an address is set,
558 * and are linked together so all prefixes for an interface can be located.
561 struct sockaddr *ifpr_prefix; /* prefix of interface */
562 struct ifnet *ifpr_ifp; /* back-pointer to interface */
563 TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */
564 u_char ifpr_plen; /* prefix length in bits */
565 u_char ifpr_type; /* protocol dependent prefix type */
569 * Multicast address structure. This is analogous to the ifaddr
570 * structure except that it keeps track of multicast addresses.
571 * Also, the reference count here is a count of requests for this
572 * address, not a count of pointers to this structure.
575 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */
576 struct sockaddr *ifma_addr; /* address this membership is for */
577 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */
578 struct ifnet *ifma_ifp; /* back-pointer to interface */
579 u_int ifma_refcount; /* reference count */
580 void *ifma_protospec; /* protocol-specific state, if any */
591 /* interface address change event */
592 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *,
593 enum ifaddr_event, struct ifaddr *);
594 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t);
595 /* new interface attach event */
596 typedef void (*ifnet_attach_event_handler_t)(void *, struct ifnet *);
597 EVENTHANDLER_DECLARE(ifnet_attach_event, ifnet_attach_event_handler_t);
598 /* interface detach event */
599 typedef void (*ifnet_detach_event_handler_t)(void *, struct ifnet *);
600 EVENTHANDLER_DECLARE(ifnet_detach_event, ifnet_detach_event_handler_t);
603 #define ASSERT_IFAC_VALID(ifac) do { \
604 KKASSERT((ifac)->ifa_magic == IFA_CONTAINER_MAGIC); \
605 KKASSERT((ifac)->ifa_refcnt > 0); \
608 #define ASSERT_IFAC_VALID(ifac) ((void)0)
612 _IFAREF(struct ifaddr *_ifa, int _cpu_id)
614 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id];
617 ASSERT_IFAC_VALID(_ifac);
623 IFAREF(struct ifaddr *_ifa)
625 _IFAREF(_ifa, mycpuid);
628 #include <sys/malloc.h>
630 MALLOC_DECLARE(M_IFADDR);
631 MALLOC_DECLARE(M_IFMADDR);
632 MALLOC_DECLARE(M_IFNET);
634 void ifac_free(struct ifaddr_container *, int);
637 _IFAFREE(struct ifaddr *_ifa, int _cpu_id)
639 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id];
642 ASSERT_IFAC_VALID(_ifac);
643 if (--_ifac->ifa_refcnt == 0)
644 ifac_free(_ifac, _cpu_id);
649 IFAFREE(struct ifaddr *_ifa)
651 _IFAFREE(_ifa, mycpuid);
654 struct lwkt_port *ifnet_portfn(int);
655 int ifnet_domsg(struct lwkt_msg *, int);
656 void ifnet_sendmsg(struct lwkt_msg *, int);
657 void ifnet_forwardmsg(struct lwkt_msg *, int);
658 struct ifnet *ifnet_byindex(unsigned short);
661 ifa_domsg(struct lwkt_msg *_lmsg, int _cpu)
663 return ifnet_domsg(_lmsg, _cpu);
667 ifa_sendmsg(struct lwkt_msg *_lmsg, int _cpu)
669 ifnet_sendmsg(_lmsg, _cpu);
673 ifa_forwardmsg(struct lwkt_msg *_lmsg, int _nextcpu)
675 ifnet_forwardmsg(_lmsg, _nextcpu);
678 extern struct ifnethead ifnet;
679 extern struct ifnet **ifindex2ifnet;
680 extern int ifqmaxlen;
681 extern struct ifnet loif[];
684 void ether_ifattach(struct ifnet *, uint8_t *, struct lwkt_serialize *);
685 void ether_ifattach_bpf(struct ifnet *, uint8_t *, u_int, u_int,
686 struct lwkt_serialize *);
687 void ether_ifdetach(struct ifnet *);
688 void ether_demux_oncpu(struct ifnet *, struct mbuf *);
689 void ether_input_oncpu(struct ifnet *, struct mbuf *);
690 void ether_reinput_oncpu(struct ifnet *, struct mbuf *, int);
691 void ether_input_chain(struct ifnet *, struct mbuf *,
692 const struct pktinfo *, struct mbuf_chain *);
693 void ether_input_chain_init(struct mbuf_chain *);
694 void ether_input_dispatch(struct mbuf_chain *);
695 int ether_output_frame(struct ifnet *, struct mbuf *);
696 int ether_ioctl(struct ifnet *, int, caddr_t);
697 uint32_t ether_crc32_le(const uint8_t *, size_t);
698 uint32_t ether_crc32_be(const uint8_t *, size_t);
700 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **);
701 int if_allmulti(struct ifnet *, int);
702 void if_attach(struct ifnet *, struct lwkt_serialize *);
703 int if_delmulti(struct ifnet *, struct sockaddr *);
704 void if_delallmulti(struct ifnet *ifp);
705 void if_purgeaddrs_nolink(struct ifnet *);
706 void if_detach(struct ifnet *);
707 void if_down(struct ifnet *);
708 void if_link_state_change(struct ifnet *);
709 void if_initname(struct ifnet *, const char *, int);
710 int if_getanyethermac(uint16_t *, int);
711 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3);
712 struct ifnet *if_alloc(uint8_t);
713 void if_free(struct ifnet *);
714 void if_route(struct ifnet *, int flag, int fam);
715 int if_setlladdr(struct ifnet *, const u_char *, int);
716 void if_unroute(struct ifnet *, int flag, int fam);
717 void if_up(struct ifnet *);
718 /*void ifinit(void);*/ /* declared in systm.h for main() */
719 int ifioctl(struct socket *, u_long, caddr_t, struct ucred *);
720 int ifpromisc(struct ifnet *, int);
721 struct ifnet *ifunit(const char *);
722 struct ifnet *if_withname(struct sockaddr *);
724 struct ifaddr *ifa_ifwithaddr(struct sockaddr *);
725 struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *);
726 struct ifaddr *ifa_ifwithnet(struct sockaddr *);
727 struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *);
728 struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *);
730 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp);
731 typedef void if_com_free_t(void *com, u_char type);
732 void if_register_com_alloc(u_char, if_com_alloc_t *a, if_com_free_t *);
733 void if_deregister_com_alloc(u_char);
735 void *ifa_create(int, int);
736 void ifa_destroy(struct ifaddr *);
737 void ifa_iflink(struct ifaddr *, struct ifnet *, int);
738 void ifa_ifunlink(struct ifaddr *, struct ifnet *);
740 struct ifaddr *ifaddr_byindex(unsigned short);
742 struct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *);
743 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen);
744 void if_devstart(struct ifnet *ifp);
746 #define IF_LLSOCKADDR(ifp) \
747 ((struct sockaddr_dl *)(ifp)->if_lladdr->ifa_addr)
748 #define IF_LLADDR(ifp) LLADDR(IF_LLSOCKADDR(ifp))
750 #ifdef DEVICE_POLLING
751 typedef void poll_handler_t (struct ifnet *ifp, enum poll_cmd cmd, int count);
752 int ether_poll_register(struct ifnet *);
753 int ether_poll_deregister(struct ifnet *);
754 int ether_pollcpu_register(struct ifnet *, int);
755 #endif /* DEVICE_POLLING */
758 int ifpoll_register(struct ifnet *);
759 int ifpoll_deregister(struct ifnet *);
760 #endif /* IFPOLL_ENABLE */
764 #endif /* !_NET_IF_VAR_H_ */