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 $
37 #ifndef _NET_IF_VAR_H_
38 #define _NET_IF_VAR_H_
40 #ifndef _SYS_SERIALIZE_H_
41 #include <sys/serialize.h>
47 #include <sys/mutex.h>
51 * Structures defining a network interface, providing a packet
52 * transport mechanism (ala level 0 of the PUP protocols).
54 * Each interface accepts output datagrams of a specified maximum
55 * length, and provides higher level routines with input datagrams
56 * received from its medium.
58 * Output occurs when the routine if_output is called, with four parameters:
59 * ifp->if_output(ifp, m, dst, rt)
60 * Here m is the mbuf chain to be sent and dst is the destination address.
61 * The output routine encapsulates the supplied datagram if necessary,
62 * and then transmits it on its medium.
64 * On input, each interface unwraps the data received by it, and either
65 * places it on the input queue of a internetwork datagram routine
66 * and posts the associated software interrupt, or passes the datagram to
67 * the routine if_input. It is called with the mbuf chain as parameter:
68 * ifp->if_input(ifp, m)
69 * The input routine removes the protocol dependent header if necessary.
71 * Driver may call type specific interface, e.g. ether_input_pkt(), instead
72 * of if_input, to take advantage of hardware supplied information.
74 * Routines exist for locating interfaces by their addresses
75 * or for locating a interface on a certain network, as well as more general
76 * routing and gateway routines maintaining information used to locate
77 * interfaces. These routines live in the files if.c and route.c
81 * Forward structure declarations for function prototypes [sic].
90 struct lwkt_serialize;
91 struct ifaddr_container;
100 #include <sys/queue.h> /* get TAILQ macros */
102 #include <net/altq/if_altq.h>
105 #include <sys/eventhandler.h>
106 #include <sys/mbuf.h>
107 #include <sys/systm.h> /* XXX */
108 #include <sys/thread2.h>
111 #define IF_DUNIT_NONE -1
113 TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */
114 TAILQ_HEAD(ifaddrhead, ifaddr_container); /* instantiation is preserved in the list */
115 TAILQ_HEAD(ifprefixhead, ifprefix);
116 TAILQ_HEAD(ifmultihead, ifmultiaddr);
119 * Structure defining a mbuf queue.
122 struct mbuf *ifq_head;
123 struct mbuf *ifq_tail;
130 * Note of IFPOLL_ENABLE
131 * 1) Any file(*.c) that depends on IFPOLL_ENABLE supports in this
132 * file should include opt_ifpoll.h at its beginning.
133 * 2) When struct changes, which are conditioned by IFPOLL_ENABLE,
134 * are to be introduced, please keep the struct's size and layout
135 * same, no matter whether IFPOLL_ENABLE is defined or not.
136 * See ifnet.if_npoll and ifnet.if_npoll_unused for example.
140 * Network serialize/deserialize types
142 enum ifnet_serialize {
143 IFNET_SERIALIZE_ALL /* all serializers */
146 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
149 * Structure defining a network interface.
151 * (Would like to call this struct ``if'', but C isn't PL/1.)
155 * NB: For DragonFlyBSD, it is assumed that each NIC driver's softc starts
156 * with 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.
176 * ifnet is protected by calling if_serialize, if_tryserialize and
177 * if_deserialize serialize functions with the ifnet_serialize parameter.
178 * Callers of if_ioctl, if_watchdog, if_init, if_resolvemulti, and if_npoll
179 * should call the ifnet serialize functions with IFNET_SERIALIZE_ALL.
181 * if_snd subqueues are protected by its own serializers. Callers of
182 * if_start should call ifsq_serialiize_hw(), ifsq_deserialize_hw() and
183 * ifsq_tryserialize_hw() to properly serialize hardware for transmission.
185 * Caller of if_output MUST NOT serialize ifnet or if_snd by calling
186 * the related serialize functions.
188 * For better tranmission performance, driver should setup if_snd subqueue
189 * owner cpuid properly using ifsq_set_cpuid() (or ifq_set_cpuid(), if not
190 * multiple transmit queue capable). Normally, the if_snd subqueue owner
191 * cpu is the one that processing the transmission interrupt. And in driver,
192 * direct call of if_start should be avoided, use ifsq_devstart() or
193 * ifsq_devstart_sched() instead (or if_devstart()/if_devstart_sched(), if
194 * not multiple transmit queue capable).
200 * if_data is no longer used to hold per interface statistics, so DO NOT use
201 * the old style ifp->if_ipackets++ to update statistics; instead IFNET_STAT_
202 * macros should be used.
206 * SINGLE SERIALIZER MODE:
208 * In this mode, driver MUST NOT setup if_serialize, if_deserialize,
209 * if_tryserialize or if_serialize_assert. Driver could supply its own
210 * serializer to be used (through the type specific attach function, e.g.
211 * ether_ifattach()) or it could depend on the default serializer. In this
212 * mode if_serializer will be setup properly.
214 * If a device driver installs the same serializer for its interrupt
215 * as for ifnet, then the driver only really needs to worry about further
216 * serialization in timeout based entry points and device_method_t entry
217 * points. All other entry points will already be serialized.
221 * MULTI SERIALIZERS MODE:
223 * In this mode, driver MUST setup if_serialize, if_deserialize,
224 * if_tryserialize and if_serialize_assert. Driver MUST NOT supply its own
225 * serializer to be used. In this mode, if_serializer will be left as NULL.
226 * And driver MUST setup if_snd subqueues' hardware serailizer properly by
227 * calling ifsq_set_hw_serialize().
231 * MULTIPLE TRANSMIT QUEUES:
233 * This should be implemented in "MULTI SERIALIZERS MODE". Legacy if_watchdog
234 * method SHOULD NOT be used.
238 * Before the type specific attach, e.g. ether_ifattach(), driver should
239 * setup the transmit queue count and cpuid to subqueue mapping method
240 * properly (assume QCOUNT is power of 2):
242 * ifq_set_subq_cnt(&ifp->if_snd, QCOUNT);
243 * ifp->if_mapsubq = ifq_mapsubq_mask;
244 * ifq_set_subq_mask(&ifp->if_snd, QCOUNT - 1);
246 * After the type specific attach, driver should setup the subqueues owner
247 * cpu, serializer and watchdog properly:
249 * for (i = 0; i < QCOUNT, ++i) {
250 * struct ifaltq_subque *ifsq = ifq_get_subq(&ifp->if_snd, i);
252 * ifsq_set_cpuid(ifsq, Q_CPUID);
253 * ifsq_set_hw_serialize(ifsq, Q_SLIZE);
254 * ifsq_watchdog_init(Q_WDOG, ifsq, Q_WDOG_FUNC);
257 * Q_CPUID, the cpu which handles the hardware transmit queue interrupt
258 * Q_SLIZE, the serializer protects the hardware transmit queue
259 * Q_WDOG, per hardware transmit queue watchdog handler, struct ifsubq_watchdog
260 * Q_WDOG_FUNC, watchdog function, probably should reset hardware
264 * Make sure per hardware transmit queue watchdog is stopped and oactive is
267 * for (i = 0; i < QCOUNT, ++i) {
268 * ifsq_clr_oactive(ifsq);
269 * ifsq_watchdog_stop(Q_WDOG);
274 * Make sure per hardware transmit queue watchdog is started and oactive is
277 * for (i = 0; i < QCOUNT, ++i) {
278 * ifsq_clr_oactive(ifsq);
279 * ifsq_watchdog_start(Q_WDOG);
284 * if_start takes subqueue as parameter, so instead of using ifq_ functions
285 * ifsq_ functions should be used. If device could not be programmed to
286 * transmit when no media link is not up, MAKE SURE to purge the subqueue:
288 * if ((ifp->if_flags & IFF_RUNNING) == 0 || ifsq_is_oactive(ifsq))
295 * if (NO_FREE_DESC) {
296 * ifsq_set_oactive(ifsq);
299 * m = ifsq_dequeue(ifsq);
302 * Q_WDOG.wd_timer = WDOG_TIMEOUT;
305 * 5) Transmission done, e.g. transmit queue interrupt processing
307 * Same as if_start, ifsq_ functions should be used:
309 * DRIVER_COLLECT_DESC();
311 * ifsq_clr_oactive(ifsq);
312 * if (NO_PENDING_DESC)
313 * Q_WDOG.wd_timer = 0;
314 * if (!ifsq_is_empty(ifsq))
315 * ifsq_devstart(ifsq);
318 void *if_softc; /* pointer to driver state */
319 void *if_l2com; /* pointer to protocol bits */
320 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */
321 char if_xname[IFNAMSIZ]; /* external name (name + unit) */
322 const char *if_dname; /* driver name */
323 int if_dunit; /* unit or IF_DUNIT_NONE */
324 void *if_vlantrunks; /* vlan trunks */
325 struct ifaddrhead *if_addrheads; /* per-cpu per-if addresses */
326 int if_pcount; /* number of promiscuous listeners */
327 void *if_carp; /* carp interfaces */
328 struct bpf_if *if_bpf; /* packet filter structure */
329 u_short if_index; /* numeric abbreviation for this if */
330 short if_timer; /* time 'til if_watchdog called */
331 int if_flags; /* up/down, broadcast, etc. */
332 int if_capabilities; /* interface capabilities */
333 int if_capenable; /* enabled features */
334 void *if_linkmib; /* link-type-specific MIB data */
335 size_t if_linkmiblen; /* length of above data */
336 struct if_data if_data; /* NOTE: stats are in if_data_pcpu */
337 struct ifmultihead if_multiaddrs; /* multicast addresses configured */
338 int if_amcount; /* number of all-multicast requests */
339 /* procedure handles */
340 int (*if_output) /* output routine (enqueue) */
341 (struct ifnet *, struct mbuf *, struct sockaddr *,
343 void (*if_input) /* input routine from hardware driver */
344 (struct ifnet *, struct mbuf *);
345 void (*if_start) /* initiate output routine */
346 (struct ifnet *, struct ifaltq_subque *);
347 int (*if_ioctl) /* ioctl routine */
348 (struct ifnet *, u_long, caddr_t, struct ucred *);
349 void (*if_watchdog) /* timer routine */
351 void (*if_init) /* init routine */
353 int (*if_resolvemulti) /* validate/resolve multicast */
354 (struct ifnet *, struct sockaddr **, struct sockaddr *);
356 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */
357 int (*if_mapsubq) /* cpuid to if_snd subqueue map */
358 (struct ifaltq *, int);
362 * ifnet serialize functions
365 (struct ifnet *, enum ifnet_serialize);
366 void (*if_deserialize)
367 (struct ifnet *, enum ifnet_serialize);
368 int (*if_tryserialize)
369 (struct ifnet *, enum ifnet_serialize);
371 void (*if_serialize_assert)
372 (struct ifnet *, enum ifnet_serialize, boolean_t);
375 void (*if_serialize_unused)(void);
379 void (*if_npoll) /* polling config */
380 (struct ifnet *, struct ifpoll_info *);
383 void (*if_npoll_unused)(void);
385 int if_tsolen; /* max TSO length */
386 struct ifaltq if_snd; /* output subqueues */
387 struct ifprefixhead if_prefixhead; /* list of prefixes per if */
388 const uint8_t *if_broadcastaddr;
389 void *if_bridge; /* bridge glue */
390 void *if_afdata[AF_MAX];
391 struct ifaddr *if_lladdr;
393 /* serializer, in single serializer mode */
394 struct lwkt_serialize *if_serializer;
396 * default serializer, in single serializer mode,
397 * if driver does not supply one
399 struct lwkt_serialize if_default_serializer;
401 struct mtx if_ioctl_mtx; /* high-level ioctl mutex */
403 struct ifdata_pcpu *if_data_pcpu; /* per-cpu stats */
404 void *if_pf_kif; /* pf interface */
407 typedef void if_init_f_t (void *);
409 #define if_mtu if_data.ifi_mtu
410 #define if_type if_data.ifi_type
411 #define if_physical if_data.ifi_physical
412 #define if_addrlen if_data.ifi_addrlen
413 #define if_hdrlen if_data.ifi_hdrlen
414 #define if_metric if_data.ifi_metric
415 #define if_link_state if_data.ifi_link_state
416 #define if_baudrate if_data.ifi_baudrate
417 #define if_hwassist if_data.ifi_hwassist
418 #define if_ipackets if_data.ifi_ipackets
419 #define if_ierrors if_data.ifi_ierrors
420 #define if_opackets if_data.ifi_opackets
421 #define if_oerrors if_data.ifi_oerrors
422 #define if_collisions if_data.ifi_collisions
423 #define if_ibytes if_data.ifi_ibytes
424 #define if_obytes if_data.ifi_obytes
425 #define if_imcasts if_data.ifi_imcasts
426 #define if_omcasts if_data.ifi_omcasts
427 #define if_iqdrops if_data.ifi_iqdrops
428 #define if_noproto if_data.ifi_noproto
429 #define if_lastchange if_data.ifi_lastchange
430 #define if_recvquota if_data.ifi_recvquota
431 #define if_xmitquota if_data.ifi_xmitquota
432 #define if_rawoutput(if, m, sa) if_output(if, m, sa, NULL)
434 /* for compatibility with other BSDs */
435 #define if_list if_link
438 * Per-cpu interface statistics
441 u_long ifd_ipackets; /* packets received on interface */
442 u_long ifd_ierrors; /* input errors on interface */
443 u_long ifd_opackets; /* packets sent on interface */
444 u_long ifd_oerrors; /* output errors on interface */
445 u_long ifd_collisions; /* collisions on csma interfaces */
446 u_long ifd_ibytes; /* total number of octets received */
447 u_long ifd_obytes; /* total number of octets sent */
448 u_long ifd_imcasts; /* packets received via multicast */
449 u_long ifd_omcasts; /* packets sent via multicast */
450 u_long ifd_iqdrops; /* dropped on input, this interface */
451 u_long ifd_noproto; /* destined for unsupported protocol */
454 #endif /* _KERNEL || _KERNEL_STRUCTURES */
457 * ifqueue operation macros
459 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
460 #define IF_DROP(ifq) ((ifq)->ifq_drops++)
461 #define IF_QLEN(ifq) ((ifq)->ifq_len)
462 #define IF_QEMPTY(ifq) (IF_QLEN(ifq) == 0)
464 #define IF_ENQUEUE(ifq, m) do { \
465 (m)->m_nextpkt = NULL; \
466 if ((ifq)->ifq_tail == NULL) \
467 (ifq)->ifq_head = m; \
469 (ifq)->ifq_tail->m_nextpkt = m; \
470 (ifq)->ifq_tail = m; \
474 #define IF_PREPEND(ifq, m) do { \
475 (m)->m_nextpkt = (ifq)->ifq_head; \
476 if ((ifq)->ifq_tail == NULL) \
477 (ifq)->ifq_tail = (m); \
478 (ifq)->ifq_head = (m); \
482 #define IF_DEQUEUE(ifq, m) do { \
483 (m) = (ifq)->ifq_head; \
485 if (((ifq)->ifq_head = (m)->m_nextpkt) == NULL) \
486 (ifq)->ifq_tail = NULL; \
487 (m)->m_nextpkt = NULL; \
492 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head)
494 #define IF_DRAIN(ifq) do { \
497 IF_DEQUEUE(ifq, m); \
506 /* interface link layer address change event */
507 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *);
508 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t);
511 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) \
512 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, TRUE)
513 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) \
514 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, FALSE)
516 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) ((void)0)
517 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) ((void)0)
521 ifnet_serialize_all(struct ifnet *_ifp)
523 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_ALL);
527 ifnet_deserialize_all(struct ifnet *_ifp)
529 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_ALL);
533 ifnet_tryserialize_all(struct ifnet *_ifp)
535 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_ALL);
539 * 72 was chosen below because it is the size of a TCP/IP
540 * header (40) + the minimum mss (32).
543 #define IF_MAXMTU 65535
549 struct in_ifaddr_container {
550 struct in_ifaddr *ia;
551 LIST_ENTRY(in_ifaddr_container) ia_hash;
552 /* entry in bucket of inet addresses */
553 TAILQ_ENTRY(in_ifaddr_container) ia_link;
554 /* list of internet addresses */
555 struct ifaddr_container *ia_ifac; /* parent ifaddr_container */
559 * Per-cpu ifaddr container:
560 * - per-cpu ifaddr reference count
561 * - linkage to per-cpu addresses lists
562 * - per-cpu ifaddr statistics
564 struct ifaddr_container {
565 #define IFA_CONTAINER_MAGIC 0x19810219
566 #define IFA_CONTAINER_DEAD 0xc0dedead
567 uint32_t ifa_magic; /* IFA_CONTAINER_MAGIC */
569 TAILQ_ENTRY(ifaddr_container) ifa_link; /* queue macro glue */
570 u_int ifa_refcnt; /* references to this structure */
571 uint16_t ifa_listmask; /* IFA_LIST_ */
572 uint16_t ifa_prflags; /* protocol specific flags */
574 u_long ifa_ipackets; /* packets received on addr */
575 u_long ifa_ibytes; /* bytes received on addr */
576 u_long ifa_opackets; /* packets sent on addr */
577 u_long ifa_obytes; /* bytes sent on addr */
580 * Protocol specific states
583 struct in_ifaddr_container u_in_ifac;
587 #define IFA_LIST_IFADDRHEAD 0x01 /* on ifnet.if_addrheads[cpuid] */
588 #define IFA_LIST_IN_IFADDRHEAD 0x02 /* on in_ifaddrheads[cpuid] */
589 #define IFA_LIST_IN_IFADDRHASH 0x04 /* on in_ifaddrhashtbls[cpuid] */
591 #define IFA_PRF_FLAG0 0x01
592 #define IFA_PRF_FLAG1 0x02
593 #define IFA_PRF_FLAG2 0x04
594 #define IFA_PRF_FLAG3 0x08
597 * The ifaddr structure contains information about one address
598 * of an interface. They are maintained by the different address families,
599 * are allocated and attached when an address is set, and are linked
600 * together so all addresses for an interface can be located.
603 * Statistics are no longer stored in if_data, instead, they are stored
604 * in the per-cpu ifaddr_container. So don't use the old style
605 * ifa->if_ipackets++ to update statistics, use IFA_STAT_ macros.
608 struct sockaddr *ifa_addr; /* address of interface */
609 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
610 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
611 struct sockaddr *ifa_netmask; /* used to determine subnet */
612 struct if_data if_data; /* not all members are meaningful */
613 struct ifnet *ifa_ifp; /* back-pointer to interface */
615 struct ifaddr_container *ifa_containers; /* per-cpu data */
616 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
617 (int, struct rtentry *);
618 u_short ifa_flags; /* mostly rt_flags for cloning */
619 int ifa_ncnt; /* # of valid ifaddr_container */
620 int ifa_metric; /* cost of going out this interface */
622 struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */
624 int (*ifa_claim_addr) /* check if an addr goes to this if */
625 (struct ifaddr *, struct sockaddr *);
628 #define IFA_ROUTE RTF_UP /* route installed */
630 /* for compatibility with other BSDs */
631 #define ifa_list ifa_link
634 * The prefix structure contains information about one prefix
635 * of an interface. They are maintained by the different address families,
636 * are allocated and attached when an prefix or an address is set,
637 * and are linked together so all prefixes for an interface can be located.
640 struct sockaddr *ifpr_prefix; /* prefix of interface */
641 struct ifnet *ifpr_ifp; /* back-pointer to interface */
642 TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */
643 u_char ifpr_plen; /* prefix length in bits */
644 u_char ifpr_type; /* protocol dependent prefix type */
648 * Multicast address structure. This is analogous to the ifaddr
649 * structure except that it keeps track of multicast addresses.
650 * Also, the reference count here is a count of requests for this
651 * address, not a count of pointers to this structure.
654 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */
655 struct sockaddr *ifma_addr; /* address this membership is for */
656 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */
657 struct ifnet *ifma_ifp; /* back-pointer to interface */
658 u_int ifma_refcount; /* reference count */
659 void *ifma_protospec; /* protocol-specific state, if any */
665 * ifaddr statistics update macro
667 #define IFA_STAT_INC(ifa, name, v) \
669 (ifa)->ifa_containers[mycpuid].ifa_##name += (v); \
673 * Interface (ifnet) statistics update macros
675 #define IFNET_STAT_INC(ifp, name, v) \
677 (ifp)->if_data_pcpu[mycpuid].ifd_##name += (v); \
680 #define IFNET_STAT_SET(ifp, name, v) \
683 (ifp)->if_data_pcpu[0].ifd_##name = (v); \
684 for (_cpu = 1; _cpu < ncpus; ++_cpu) \
685 (ifp)->if_data_pcpu[_cpu].ifd_##name = 0; \
688 #define IFNET_STAT_GET(ifp, name, v) \
691 (v) = (ifp)->if_data_pcpu[0].ifd_##name; \
692 for (_cpu = 1; _cpu < ncpus; ++_cpu) \
693 (v) += (ifp)->if_data_pcpu[_cpu].ifd_##name; \
696 #ifndef _SYS_SERIALIZE2_H_
697 #include <sys/serialize2.h>
706 /* interface address change event */
707 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *,
708 enum ifaddr_event, struct ifaddr *);
709 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t);
710 /* new interface attach event */
711 typedef void (*ifnet_attach_event_handler_t)(void *, struct ifnet *);
712 EVENTHANDLER_DECLARE(ifnet_attach_event, ifnet_attach_event_handler_t);
713 /* interface detach event */
714 typedef void (*ifnet_detach_event_handler_t)(void *, struct ifnet *);
715 EVENTHANDLER_DECLARE(ifnet_detach_event, ifnet_detach_event_handler_t);
721 char ifg_group[IFNAMSIZ];
724 int ifg_carp_demoted;
725 TAILQ_HEAD(, ifg_member) ifg_members;
726 TAILQ_ENTRY(ifg_group) ifg_next;
730 TAILQ_ENTRY(ifg_member) ifgm_next;
731 struct ifnet *ifgm_ifp;
735 struct ifg_group *ifgl_group;
736 TAILQ_ENTRY(ifg_list) ifgl_next;
739 /* group attach event */
740 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *);
741 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t);
742 /* group detach event */
743 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *);
744 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t);
745 /* group change event */
746 typedef void (*group_change_event_handler_t)(void *, const char *);
747 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t);
751 #define ASSERT_IFAC_VALID(ifac) do { \
752 KKASSERT((ifac)->ifa_magic == IFA_CONTAINER_MAGIC); \
753 KKASSERT((ifac)->ifa_refcnt > 0); \
756 #define ASSERT_IFAC_VALID(ifac) ((void)0)
760 _IFAREF(struct ifaddr *_ifa, int _cpu_id)
762 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id];
765 ASSERT_IFAC_VALID(_ifac);
771 IFAREF(struct ifaddr *_ifa)
773 _IFAREF(_ifa, mycpuid);
776 #include <sys/malloc.h>
778 MALLOC_DECLARE(M_IFADDR);
779 MALLOC_DECLARE(M_IFMADDR);
780 MALLOC_DECLARE(M_IFNET);
782 void ifac_free(struct ifaddr_container *, int);
785 _IFAFREE(struct ifaddr *_ifa, int _cpu_id)
787 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id];
790 ASSERT_IFAC_VALID(_ifac);
791 if (--_ifac->ifa_refcnt == 0)
792 ifac_free(_ifac, _cpu_id);
797 IFAFREE(struct ifaddr *_ifa)
799 _IFAFREE(_ifa, mycpuid);
802 struct lwkt_port *ifnet_portfn(int);
803 int ifnet_domsg(struct lwkt_msg *, int);
804 void ifnet_sendmsg(struct lwkt_msg *, int);
805 void ifnet_forwardmsg(struct lwkt_msg *, int);
806 struct ifnet *ifnet_byindex(unsigned short);
809 ifa_domsg(struct lwkt_msg *_lmsg, int _cpu)
811 return ifnet_domsg(_lmsg, _cpu);
815 ifa_sendmsg(struct lwkt_msg *_lmsg, int _cpu)
817 ifnet_sendmsg(_lmsg, _cpu);
821 ifa_forwardmsg(struct lwkt_msg *_lmsg, int _nextcpu)
823 ifnet_forwardmsg(_lmsg, _nextcpu);
827 ifnet_serialize_array_enter(lwkt_serialize_t *_arr, int _arrcnt,
828 enum ifnet_serialize _slz)
830 KKASSERT(_slz == IFNET_SERIALIZE_ALL);
831 lwkt_serialize_array_enter(_arr, _arrcnt, 0);
835 ifnet_serialize_array_exit(lwkt_serialize_t *_arr, int _arrcnt,
836 enum ifnet_serialize _slz)
838 KKASSERT(_slz == IFNET_SERIALIZE_ALL);
839 lwkt_serialize_array_exit(_arr, _arrcnt, 0);
843 ifnet_serialize_array_try(lwkt_serialize_t *_arr, int _arrcnt,
844 enum ifnet_serialize _slz)
846 KKASSERT(_slz == IFNET_SERIALIZE_ALL);
847 return lwkt_serialize_array_try(_arr, _arrcnt, 0);
853 ifnet_serialize_array_assert(lwkt_serialize_t *_arr, int _arrcnt,
854 enum ifnet_serialize _slz, boolean_t _serialized)
858 KKASSERT(_slz == IFNET_SERIALIZE_ALL);
860 for (_i = 0; _i < _arrcnt; ++_i)
861 ASSERT_SERIALIZED(_arr[_i]);
863 for (_i = 0; _i < _arrcnt; ++_i)
864 ASSERT_NOT_SERIALIZED(_arr[_i]);
868 #endif /* INVARIANTS */
870 #define REINPUT_KEEPRCVIF 0x0001 /* ether_reinput_oncpu() */
871 #define REINPUT_RUNBPF 0x0002 /* ether_reinput_oncpu() */
873 extern struct ifnethead ifnet;
874 extern struct ifnet **ifindex2ifnet;
875 extern int ifqmaxlen;
876 extern struct ifnet loif[];
882 void ether_ifattach(struct ifnet *, const uint8_t *,
883 struct lwkt_serialize *);
884 void ether_ifattach_bpf(struct ifnet *, const uint8_t *, u_int, u_int,
885 struct lwkt_serialize *);
886 void ether_ifdetach(struct ifnet *);
887 void ether_demux(struct mbuf *);
888 void ether_demux_oncpu(struct ifnet *, struct mbuf *);
889 void ether_reinput_oncpu(struct ifnet *, struct mbuf *, int);
890 void ether_input_pkt(struct ifnet *, struct mbuf *,
891 const struct pktinfo *, int);
892 int ether_output_frame(struct ifnet *, struct mbuf *);
893 int ether_ioctl(struct ifnet *, u_long, caddr_t);
894 u_char *kether_aton(const char *, u_char *);
895 char *kether_ntoa(const u_char *, char *);
896 struct ifnet *ether_bridge_interface(struct ifnet *ifp);
897 uint32_t ether_crc32_le(const uint8_t *, size_t);
898 uint32_t ether_crc32_be(const uint8_t *, size_t);
900 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **);
901 int if_addmulti_serialized(struct ifnet *, struct sockaddr *,
902 struct ifmultiaddr **);
903 int if_allmulti(struct ifnet *, int);
904 void if_attach(struct ifnet *, struct lwkt_serialize *);
905 int if_delmulti(struct ifnet *, struct sockaddr *);
906 void if_delallmulti_serialized(struct ifnet *ifp);
907 void if_purgeaddrs_nolink(struct ifnet *);
908 void if_detach(struct ifnet *);
909 void if_down(struct ifnet *);
910 void if_link_state_change(struct ifnet *);
911 void if_initname(struct ifnet *, const char *, int);
912 int if_getanyethermac(uint16_t *, int);
913 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3);
914 struct ifnet *if_alloc(uint8_t);
915 void if_free(struct ifnet *);
916 void if_route(struct ifnet *, int flag, int fam);
917 int if_setlladdr(struct ifnet *, const u_char *, int);
918 void if_unroute(struct ifnet *, int flag, int fam);
919 void if_up(struct ifnet *);
920 /*void ifinit(void);*/ /* declared in systm.h for main() */
921 int ifioctl(struct socket *, u_long, caddr_t, struct ucred *);
922 int ifpromisc(struct ifnet *, int);
923 struct ifnet *ifunit(const char *);
924 struct ifnet *if_withname(struct sockaddr *);
926 struct ifg_group *if_creategroup(const char *);
927 int if_addgroup(struct ifnet *, const char *);
928 int if_delgroup(struct ifnet *, const char *);
929 int if_getgroup(caddr_t, struct ifnet *);
930 int if_getgroupmembers(caddr_t);
932 struct ifaddr *ifa_ifwithaddr(struct sockaddr *);
933 struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *);
934 struct ifaddr *ifa_ifwithnet(struct sockaddr *);
935 struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *);
936 struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *);
938 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp);
939 typedef void if_com_free_t(void *com, u_char type);
940 void if_register_com_alloc(u_char, if_com_alloc_t *a, if_com_free_t *);
941 void if_deregister_com_alloc(u_char);
943 void *ifa_create(int, int);
944 void ifa_destroy(struct ifaddr *);
945 void ifa_iflink(struct ifaddr *, struct ifnet *, int);
946 void ifa_ifunlink(struct ifaddr *, struct ifnet *);
948 struct ifaddr *ifaddr_byindex(unsigned short);
950 struct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *);
951 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen);
952 void if_devstart(struct ifnet *ifp); /* COMPAT */
953 void if_devstart_sched(struct ifnet *ifp); /* COMPAT */
954 int if_ring_count2(int cnt, int cnt_max);
956 #define IF_LLSOCKADDR(ifp) \
957 ((struct sockaddr_dl *)(ifp)->if_lladdr->ifa_addr)
958 #define IF_LLADDR(ifp) LLADDR(IF_LLSOCKADDR(ifp))
961 int ifpoll_register(struct ifnet *);
962 int ifpoll_deregister(struct ifnet *);
963 #endif /* IFPOLL_ENABLE */
967 #endif /* !_NET_IF_VAR_H_ */