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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * From: @(#)if.h 8.1 (Berkeley) 6/10/93
30 * $FreeBSD: src/sys/net/if_var.h,v 1.18.2.16 2003/04/15 18:11:19 fjoe Exp $
33 #ifndef _NET_IF_VAR_H_
34 #define _NET_IF_VAR_H_
36 #ifndef _SYS_SERIALIZE_H_
37 #include <sys/serialize.h>
43 #include <sys/mutex.h>
47 * Structures defining a network interface, providing a packet
48 * transport mechanism (ala level 0 of the PUP protocols).
50 * Each interface accepts output datagrams of a specified maximum
51 * length, and provides higher level routines with input datagrams
52 * received from its medium.
54 * Output occurs when the routine if_output is called, with four parameters:
56 * 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 four parameters:
67 * ifp->if_input(ifp, m, pi, cpuid)
69 * Here m is the mbuf chain to be received. The input routine removes the
70 * protocol dependent header if necessary. A driver may also call using
71 * custom struct pktinfo reference pi and a cpuid to take advantage of
72 * hardware supplied information. Otherwise, the defaults for pi and cpuid
75 * ifp->if_input(ifp, m, NULL, -1);
77 * Routines exist for locating interfaces by their addresses
78 * or for locating a interface on a certain network, as well as more general
79 * routing and gateway routines maintaining information used to locate
80 * interfaces. These routines live in the files if.c and route.c
84 * Forward structure declarations for function prototypes [sic].
86 struct rtentry; /* ifa_rtrequest */
89 struct lwkt_serialize;
90 struct ifaddr_container;
96 #include <sys/queue.h> /* get TAILQ macros */
98 #include <net/altq/if_altq.h>
101 #include <sys/eventhandler.h>
102 #include <sys/mbuf.h>
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(ifmultihead, ifmultiaddr);
113 * Structure defining a mbuf queue.
116 struct mbuf *ifq_head;
117 struct mbuf *ifq_tail;
124 * Note of IFPOLL_ENABLE
125 * 1) Any file(*.c) that depends on IFPOLL_ENABLE supports in this
126 * file should include opt_ifpoll.h at its beginning.
127 * 2) When struct changes, which are conditioned by IFPOLL_ENABLE,
128 * are to be introduced, please keep the struct's size and layout
129 * same, no matter whether IFPOLL_ENABLE is defined or not.
130 * See ifnet.if_npoll and ifnet.if_npoll_unused for example.
134 * Network serialize/deserialize types
136 enum ifnet_serialize {
137 IFNET_SERIALIZE_ALL /* all serializers */
140 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
143 * Structure defining a network interface.
145 * (Would like to call this struct ``if'', but C isn't PL/1.)
149 * NB: For DragonFlyBSD, it is assumed that each NIC driver's softc starts
150 * with one of these structures, typically held within an arpcom structure.
152 * struct <foo>_softc {
154 * struct ifnet ac_if;
160 * The assumption is used in a number of places, including many
161 * files in sys/net, device drivers, and sys/dev/mii.c:miibus_attach().
163 * Unfortunately devices' softc are opaque, so we depend on this layout
164 * to locate the struct ifnet from the softc in the generic code.
170 * ifnet is protected by calling if_serialize, if_tryserialize and
171 * if_deserialize serialize functions with the ifnet_serialize parameter.
172 * Callers of if_ioctl, if_watchdog, if_init, if_resolvemulti, and if_npoll
173 * should call the ifnet serialize functions with IFNET_SERIALIZE_ALL.
175 * if_snd subqueues are protected by its own serializers. Callers of
176 * if_start should call ifsq_serialiize_hw(), ifsq_deserialize_hw() and
177 * ifsq_tryserialize_hw() to properly serialize hardware for transmission.
179 * Caller of if_output MUST NOT serialize ifnet or if_snd by calling
180 * the related serialize functions.
182 * For better tranmission performance, driver should setup if_snd subqueue
183 * owner cpuid properly using ifsq_set_cpuid() (or ifq_set_cpuid(), if not
184 * multiple transmit queue capable). Normally, the if_snd subqueue owner
185 * cpu is the one that processing the transmission interrupt. And in driver,
186 * direct call of if_start should be avoided, use ifsq_devstart() or
187 * ifsq_devstart_sched() instead (or if_devstart()/if_devstart_sched(), if
188 * not multiple transmit queue capable).
194 * if_data is no longer used to hold per interface statistics, so DO NOT use
195 * the old style ifp->if_ipackets++ to update statistics; instead IFNET_STAT_
196 * macros should be used.
200 * SINGLE SERIALIZER MODE:
202 * In this mode, driver MUST NOT setup if_serialize, if_deserialize,
203 * if_tryserialize or if_serialize_assert. Driver could supply its own
204 * serializer to be used (through the type specific attach function, e.g.
205 * ether_ifattach()) or it could depend on the default serializer. In this
206 * mode if_serializer will be setup properly.
208 * If a device driver installs the same serializer for its interrupt
209 * as for ifnet, then the driver only really needs to worry about further
210 * serialization in timeout based entry points and device_method_t entry
211 * points. All other entry points will already be serialized.
215 * MULTI SERIALIZERS MODE:
217 * In this mode, driver MUST setup if_serialize, if_deserialize,
218 * if_tryserialize and if_serialize_assert. Driver MUST NOT supply its own
219 * serializer to be used. In this mode, if_serializer will be left as NULL.
220 * And driver MUST setup if_snd subqueues' hardware serailizer properly by
221 * calling ifsq_set_hw_serialize().
225 * MULTIPLE TRANSMIT QUEUES:
227 * This should be implemented in "MULTI SERIALIZERS MODE". Legacy if_watchdog
228 * method SHOULD NOT be used.
232 * Before the type specific attach, e.g. ether_ifattach(), driver should
233 * setup the transmit queue count and cpuid to subqueue mapping method
234 * properly (assume QCOUNT is power of 2):
236 * ifq_set_subq_cnt(&ifp->if_snd, QCOUNT);
237 * ifp->if_mapsubq = ifq_mapsubq_modulo;
238 * ifq_set_subq_divisor(&ifp->if_snd, QCOUNT);
240 * After the type specific attach, driver should setup the subqueues owner
241 * cpu, serializer and watchdog properly:
243 * for (i = 0; i < QCOUNT, ++i) {
244 * struct ifaltq_subque *ifsq = ifq_get_subq(&ifp->if_snd, i);
246 * ifsq_set_cpuid(ifsq, Q_CPUID);
247 * ifsq_set_hw_serialize(ifsq, Q_SLIZE);
248 * ifsq_watchdog_init(Q_WDOG, ifsq, Q_WDOG_FUNC);
251 * Q_CPUID, the cpu which handles the hardware transmit queue interrupt
252 * Q_SLIZE, the serializer protects the hardware transmit queue
253 * Q_WDOG, per hardware transmit queue watchdog handler, struct ifsubq_watchdog
254 * Q_WDOG_FUNC, watchdog function, probably should reset hardware
258 * Make sure per hardware transmit queue watchdog is stopped and oactive is
261 * for (i = 0; i < QCOUNT, ++i) {
262 * ifsq_clr_oactive(ifsq);
263 * ifsq_watchdog_stop(Q_WDOG);
268 * Make sure per hardware transmit queue watchdog is started and oactive is
271 * for (i = 0; i < QCOUNT, ++i) {
272 * ifsq_clr_oactive(ifsq);
273 * ifsq_watchdog_start(Q_WDOG);
278 * if_start takes subqueue as parameter, so instead of using ifq_ functions
279 * ifsq_ functions should be used. If device could not be programmed to
280 * transmit when no media link is not up, MAKE SURE to purge the subqueue:
282 * if ((ifp->if_flags & IFF_RUNNING) == 0 || ifsq_is_oactive(ifsq))
289 * if (NO_FREE_DESC) {
290 * ifsq_set_oactive(ifsq);
293 * m = ifsq_dequeue(ifsq);
296 * Q_WDOG.wd_timer = WDOG_TIMEOUT;
299 * 5) Transmission done, e.g. transmit queue interrupt processing
301 * Same as if_start, ifsq_ functions should be used:
303 * DRIVER_COLLECT_DESC();
305 * ifsq_clr_oactive(ifsq);
306 * if (NO_PENDING_DESC)
307 * Q_WDOG.wd_timer = 0;
308 * if (!ifsq_is_empty(ifsq))
309 * ifsq_devstart(ifsq);
312 void *if_softc; /* pointer to driver state */
313 void *if_l2com; /* pointer to protocol bits */
314 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */
315 char if_xname[IFNAMSIZ]; /* external name (name + unit) */
316 const char *if_dname; /* driver name */
317 int if_dunit; /* unit or IF_DUNIT_NONE */
318 void *if_vlantrunks; /* vlan trunks */
319 struct ifaddrhead *if_addrheads; /* per-cpu per-if addresses */
320 int if_pcount; /* number of promiscuous listeners */
321 void *if_carp; /* carp interfaces */
322 struct bpf_if *if_bpf; /* packet filter structure */
323 u_short if_index; /* numeric abbreviation for this if */
324 short if_timer; /* time 'til if_watchdog called */
325 int if_flags; /* up/down, broadcast, etc. */
326 int if_capabilities; /* interface capabilities */
327 int if_capenable; /* enabled features */
328 void *if_linkmib; /* link-type-specific MIB data */
329 size_t if_linkmiblen; /* length of above data */
330 struct if_data if_data; /* NOTE: stats are in if_data_pcpu */
331 struct ifmultihead if_multiaddrs; /* multicast addresses configured */
332 int if_amcount; /* number of all-multicast requests */
333 /* procedure handles */
334 int (*if_output) /* output routine (enqueue) */
335 (struct ifnet *, struct mbuf *, struct sockaddr *,
337 void (*if_input) /* input routine from hardware driver */
338 (struct ifnet *, struct mbuf *,
339 const struct pktinfo *pi, int cpuid);
340 void (*if_start) /* initiate output routine */
341 (struct ifnet *, struct ifaltq_subque *);
342 int (*if_ioctl) /* ioctl routine */
343 (struct ifnet *, u_long, caddr_t, struct ucred *);
344 void (*if_watchdog) /* timer routine */
346 void (*if_init) /* init routine */
348 int (*if_resolvemulti) /* validate/resolve multicast */
349 (struct ifnet *, struct sockaddr **, struct sockaddr *);
351 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */
352 int (*if_mapsubq) /* cpuid to if_snd subqueue map */
353 (struct ifaltq *, int);
357 * ifnet serialize functions
360 (struct ifnet *, enum ifnet_serialize);
361 void (*if_deserialize)
362 (struct ifnet *, enum ifnet_serialize);
363 int (*if_tryserialize)
364 (struct ifnet *, enum ifnet_serialize);
366 void (*if_serialize_assert)
367 (struct ifnet *, enum ifnet_serialize, boolean_t);
370 void (*if_serialize_unused)(void);
374 void (*if_npoll) /* polling config */
375 (struct ifnet *, struct ifpoll_info *);
378 void (*if_npoll_unused)(void);
380 int if_tsolen; /* max TSO length */
381 struct ifaltq if_snd; /* output subqueues */
382 const uint8_t *if_broadcastaddr;
383 void *if_bridge; /* bridge glue */
384 void *if_lagg; /* lagg glue */
385 void *if_afdata[AF_MAX];
386 struct ifaddr *if_lladdr;
388 /* serializer, in single serializer mode */
389 struct lwkt_serialize *if_serializer;
391 * default serializer, in single serializer mode,
392 * if driver does not supply one
394 struct lwkt_serialize if_default_serializer;
397 struct ifdata_pcpu *if_data_pcpu; /* per-cpu stats */
398 void *if_pf_kif; /* pf interface */
401 * Mbuf clusters/jclusters limits should be increased
402 * by if_nmbclusters/if_nmbjclusters. Mainly for mbuf
403 * clusters/jclusters that could sit on the device
404 * queues, e.g. reception queues, for quite some time.
409 typedef void if_init_f_t (void *);
411 #define if_mtu if_data.ifi_mtu
412 #define if_type if_data.ifi_type
413 #define if_physical if_data.ifi_physical
414 #define if_addrlen if_data.ifi_addrlen
415 #define if_hdrlen if_data.ifi_hdrlen
416 #define if_metric if_data.ifi_metric
417 #define if_link_state if_data.ifi_link_state
418 #define if_baudrate if_data.ifi_baudrate
419 #define if_hwassist if_data.ifi_hwassist
420 #define if_ipackets if_data.ifi_ipackets
421 #define if_ierrors if_data.ifi_ierrors
422 #define if_opackets if_data.ifi_opackets
423 #define if_oerrors if_data.ifi_oerrors
424 #define if_collisions if_data.ifi_collisions
425 #define if_ibytes if_data.ifi_ibytes
426 #define if_obytes if_data.ifi_obytes
427 #define if_imcasts if_data.ifi_imcasts
428 #define if_omcasts if_data.ifi_omcasts
429 #define if_iqdrops if_data.ifi_iqdrops
430 #define if_noproto if_data.ifi_noproto
431 #define if_oqdrops if_data.ifi_oqdrops
432 #define if_lastchange if_data.ifi_lastchange
433 #define if_recvquota if_data.ifi_recvquota
434 #define if_xmitquota if_data.ifi_xmitquota
435 #define if_rawoutput(if, m, sa) if_output(if, m, sa, NULL)
437 /* for compatibility with other BSDs */
438 #define if_list if_link
441 * Per-cpu interface statistics
444 u_long ifd_ipackets; /* packets received on interface */
445 u_long ifd_ierrors; /* input errors on interface */
446 u_long ifd_opackets; /* packets sent on interface */
447 u_long ifd_oerrors; /* output errors on interface */
448 u_long ifd_collisions; /* collisions on csma interfaces */
449 u_long ifd_ibytes; /* total number of octets received */
450 u_long ifd_obytes; /* total number of octets sent */
451 u_long ifd_imcasts; /* packets received via multicast */
452 u_long ifd_omcasts; /* packets sent via multicast */
453 u_long ifd_iqdrops; /* dropped on input, this interface */
454 u_long ifd_noproto; /* destined for unsupported protocol */
455 u_long ifd_oqdrops; /* dropped on output, this interface */
458 #endif /* _KERNEL || _KERNEL_STRUCTURES */
461 * ifqueue operation macros
463 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
464 #define IF_DROP(ifq) ((ifq)->ifq_drops++)
465 #define IF_QLEN(ifq) ((ifq)->ifq_len)
466 #define IF_QEMPTY(ifq) (IF_QLEN(ifq) == 0)
468 #define IF_ENQUEUE(ifq, m) do { \
469 (m)->m_nextpkt = NULL; \
470 if ((ifq)->ifq_tail == NULL) \
471 (ifq)->ifq_head = m; \
473 (ifq)->ifq_tail->m_nextpkt = m; \
474 (ifq)->ifq_tail = m; \
478 #define IF_PREPEND(ifq, m) do { \
479 (m)->m_nextpkt = (ifq)->ifq_head; \
480 if ((ifq)->ifq_tail == NULL) \
481 (ifq)->ifq_tail = (m); \
482 (ifq)->ifq_head = (m); \
486 #define IF_DEQUEUE(ifq, m) do { \
487 (m) = (ifq)->ifq_head; \
489 if (((ifq)->ifq_head = (m)->m_nextpkt) == NULL) \
490 (ifq)->ifq_tail = NULL; \
491 (m)->m_nextpkt = NULL; \
496 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head)
498 #define IF_DRAIN(ifq) do { \
501 IF_DEQUEUE(ifq, m); \
510 /* interface link layer address change event */
511 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *);
512 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t);
515 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) \
516 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, TRUE)
517 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) \
518 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, FALSE)
520 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) ((void)0)
521 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) ((void)0)
525 ifnet_serialize_all(struct ifnet *_ifp)
527 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_ALL);
531 ifnet_deserialize_all(struct ifnet *_ifp)
533 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_ALL);
537 ifnet_tryserialize_all(struct ifnet *_ifp)
539 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_ALL);
543 * 72 was chosen below because it is the size of a TCP/IP
544 * header (40) + the minimum mss (32).
547 #define IF_MAXMTU 65535
553 struct in_ifaddr_container {
554 struct in_ifaddr *ia;
555 LIST_ENTRY(in_ifaddr_container) ia_hash;
556 /* entry in bucket of inet addresses */
557 TAILQ_ENTRY(in_ifaddr_container) ia_link;
558 /* list of internet addresses */
559 struct ifaddr_container *ia_ifac; /* parent ifaddr_container */
563 * Per-cpu ifaddr container:
564 * - per-cpu ifaddr reference count
565 * - linkage to per-cpu addresses lists
566 * - per-cpu ifaddr statistics
568 struct ifaddr_container {
569 #define IFA_CONTAINER_MAGIC 0x19810219
570 #define IFA_CONTAINER_DEAD 0xc0dedead
571 uint32_t ifa_magic; /* IFA_CONTAINER_MAGIC */
573 TAILQ_ENTRY(ifaddr_container) ifa_link; /* queue macro glue */
574 u_int ifa_refcnt; /* references to this structure */
575 uint16_t ifa_listmask; /* IFA_LIST_ */
576 uint16_t ifa_prflags; /* protocol specific flags */
578 u_long ifa_ipackets; /* packets received on addr */
579 u_long ifa_ibytes; /* bytes received on addr */
580 u_long ifa_opackets; /* packets sent on addr */
581 u_long ifa_obytes; /* bytes sent on addr */
584 * Protocol specific states
587 struct in_ifaddr_container u_in_ifac;
591 #define IFA_LIST_IFADDRHEAD 0x01 /* on ifnet.if_addrheads[cpuid] */
592 #define IFA_LIST_IN_IFADDRHEAD 0x02 /* on in_ifaddrheads[cpuid] */
593 #define IFA_LIST_IN_IFADDRHASH 0x04 /* on in_ifaddrhashtbls[cpuid] */
595 #define IFA_PRF_FLAG0 0x01
596 #define IFA_PRF_FLAG1 0x02
597 #define IFA_PRF_FLAG2 0x04
598 #define IFA_PRF_FLAG3 0x08
601 * The ifaddr structure contains information about one address
602 * of an interface. They are maintained by the different address families,
603 * are allocated and attached when an address is set, and are linked
604 * together so all addresses for an interface can be located.
607 * Statistics are no longer stored in if_data, instead, they are stored
608 * in the per-cpu ifaddr_container. So don't use the old style
609 * ifa->if_ipackets++ to update statistics, use IFA_STAT_ macros.
612 struct sockaddr *ifa_addr; /* address of interface */
613 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
614 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
615 struct sockaddr *ifa_netmask; /* used to determine subnet */
616 struct if_data if_data; /* not all members are meaningful */
617 struct ifnet *ifa_ifp; /* back-pointer to interface */
619 struct ifaddr_container *ifa_containers; /* per-cpu data */
620 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
621 (int, struct rtentry *);
622 u_short ifa_flags; /* mostly rt_flags for cloning */
623 int ifa_ncnt; /* # of valid ifaddr_container */
624 int ifa_metric; /* cost of going out this interface */
626 struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */
628 int (*ifa_claim_addr) /* check if an addr goes to this if */
629 (struct ifaddr *, struct sockaddr *);
632 #define IFA_ROUTE RTF_UP /* route installed */
634 /* for compatibility with other BSDs */
635 #define ifa_list ifa_link
638 * Multicast address structure. This is analogous to the ifaddr
639 * structure except that it keeps track of multicast addresses.
640 * Also, the reference count here is a count of requests for this
641 * address, not a count of pointers to this structure.
644 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */
645 struct sockaddr *ifma_addr; /* address this membership is for */
646 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */
647 struct ifnet *ifma_ifp; /* back-pointer to interface */
648 u_int ifma_refcount; /* reference count */
649 void *ifma_protospec; /* protocol-specific state, if any */
654 struct ifaddr_marker {
656 struct ifaddr_container ifac;
657 struct sockaddr addr;
658 struct sockaddr netmask;
659 struct sockaddr dstaddr;
663 * ifaddr statistics update macro
665 #define IFA_STAT_INC(ifa, name, v) \
667 (ifa)->ifa_containers[mycpuid].ifa_##name += (v); \
671 * Interface (ifnet) statistics update macros
673 #define IFNET_STAT_INC(ifp, name, v) \
675 (ifp)->if_data_pcpu[mycpuid].ifd_##name += (v); \
678 #define IFNET_STAT_SET(ifp, name, v) \
681 (ifp)->if_data_pcpu[0].ifd_##name = (v); \
682 for (_cpu = 1; _cpu < ncpus; ++_cpu) \
683 (ifp)->if_data_pcpu[_cpu].ifd_##name = 0; \
686 #define IFNET_STAT_GET(ifp, name, v) \
689 (v) = (ifp)->if_data_pcpu[0].ifd_##name; \
690 for (_cpu = 1; _cpu < ncpus; ++_cpu) \
691 (v) += (ifp)->if_data_pcpu[_cpu].ifd_##name; \
694 #ifndef _SYS_SERIALIZE2_H_
695 #include <sys/serialize2.h>
704 /* interface address change event */
705 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *,
706 enum ifaddr_event, struct ifaddr *);
707 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t);
708 /* new interface attach event */
709 typedef void (*ifnet_attach_event_handler_t)(void *, struct ifnet *);
710 EVENTHANDLER_DECLARE(ifnet_attach_event, ifnet_attach_event_handler_t);
711 /* interface detach event */
712 typedef void (*ifnet_detach_event_handler_t)(void *, struct ifnet *);
713 EVENTHANDLER_DECLARE(ifnet_detach_event, ifnet_detach_event_handler_t);
715 /* Array of all ifnets in the system */
717 int ifnet_count; /* # of elem. in ifnet_arr */
718 int ifnet_pad; /* explicit */
719 struct ifnet *ifnet_arr[];
726 char ifg_group[IFNAMSIZ];
729 int ifg_carp_demoted;
730 TAILQ_HEAD(, ifg_member) ifg_members;
731 TAILQ_ENTRY(ifg_group) ifg_next;
735 TAILQ_ENTRY(ifg_member) ifgm_next;
736 struct ifnet *ifgm_ifp;
740 struct ifg_group *ifgl_group;
741 TAILQ_ENTRY(ifg_list) ifgl_next;
744 /* group attach event */
745 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *);
746 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t);
747 /* group detach event */
748 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *);
749 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t);
750 /* group change event */
751 typedef void (*group_change_event_handler_t)(void *, const char *);
752 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t);
756 #define ASSERT_IFAC_VALID(ifac) do { \
757 KKASSERT((ifac)->ifa_magic == IFA_CONTAINER_MAGIC); \
758 KKASSERT((ifac)->ifa_refcnt > 0); \
761 #define ASSERT_IFAC_VALID(ifac) ((void)0)
765 _IFAREF(struct ifaddr *_ifa, int _cpu_id)
767 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id];
770 ASSERT_IFAC_VALID(_ifac);
776 IFAREF(struct ifaddr *_ifa)
778 _IFAREF(_ifa, mycpuid);
781 #include <sys/malloc.h>
783 MALLOC_DECLARE(M_IFADDR);
784 MALLOC_DECLARE(M_IFMADDR);
785 MALLOC_DECLARE(M_IFNET);
787 void ifac_free(struct ifaddr_container *, int);
790 _IFAFREE(struct ifaddr *_ifa, int _cpu_id)
792 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id];
795 ASSERT_IFAC_VALID(_ifac);
796 if (--_ifac->ifa_refcnt == 0)
797 ifac_free(_ifac, _cpu_id);
802 IFAFREE(struct ifaddr *_ifa)
804 _IFAFREE(_ifa, mycpuid);
808 ifnet_serialize_array_enter(lwkt_serialize_t *_arr, int _arrcnt,
809 enum ifnet_serialize _slz)
811 KKASSERT(_slz == IFNET_SERIALIZE_ALL);
812 lwkt_serialize_array_enter(_arr, _arrcnt, 0);
816 ifnet_serialize_array_exit(lwkt_serialize_t *_arr, int _arrcnt,
817 enum ifnet_serialize _slz)
819 KKASSERT(_slz == IFNET_SERIALIZE_ALL);
820 lwkt_serialize_array_exit(_arr, _arrcnt, 0);
824 ifnet_serialize_array_try(lwkt_serialize_t *_arr, int _arrcnt,
825 enum ifnet_serialize _slz)
827 KKASSERT(_slz == IFNET_SERIALIZE_ALL);
828 return lwkt_serialize_array_try(_arr, _arrcnt, 0);
834 ifnet_serialize_array_assert(lwkt_serialize_t *_arr, int _arrcnt,
835 enum ifnet_serialize _slz, boolean_t _serialized)
839 KKASSERT(_slz == IFNET_SERIALIZE_ALL);
841 for (_i = 0; _i < _arrcnt; ++_i)
842 ASSERT_SERIALIZED(_arr[_i]);
844 for (_i = 0; _i < _arrcnt; ++_i)
845 ASSERT_NOT_SERIALIZED(_arr[_i]);
849 #endif /* INVARIANTS */
851 #define REINPUT_KEEPRCVIF 0x0001 /* ether_reinput_oncpu() */
852 #define REINPUT_RUNBPF 0x0002 /* ether_reinput_oncpu() */
855 * MPSAFE NOTE for ifnet queue (ifnet), ifnet array, ifunit() and
858 * - ifnet queue must only be accessed by non-netisr threads and
859 * ifnet lock must be held (by ifnet_lock()).
860 * - If accessing ifnet queue is needed in netisrs, ifnet array
861 * (obtained through ifnet_array_get()) must be used instead.
862 * There is no need to (must not, actually) hold ifnet lock for
863 * ifnet array accessing.
864 * - ifindex2ifnet could be accessed by both non-netisr threads and
865 * netisrs. Accessing ifindex2ifnet in non-netisr threads must be
866 * protected by ifnet lock (by ifnet_lock()). Accessing
867 * ifindex2ifnet in netisrs is lockless MPSAFE and ifnet lock must
868 * not be held. However, ifindex2ifnet should be saved in a stack
869 * variable to get a consistent view of ifindex2ifnet, if
870 * ifindex2ifnet is accessed multiple times from a function in
872 * - ifunit() must only be called in non-netisr threads and ifnet
873 * lock must be held before calling this function and for the
874 * accessing of the ifp returned by this function.
875 * - If ifunit() is needed in netisr, ifunit_netisr() must be used
876 * instead. There is no need to (must not, actually) hold ifnet
877 * lock for ifunit_netisr() and the returned ifp.
879 extern struct ifnethead ifnet;
880 #define ifnetlist ifnet /* easily distinguished ifnet alias */
882 extern struct ifnet **ifindex2ifnet;
885 struct ifnet *ifunit(const char *);
886 struct ifnet *ifunit_netisr(const char *);
887 const struct ifnet_array *ifnet_array_get(void);
888 int ifnet_array_isempty(void);
890 extern int ifqmaxlen;
891 extern struct ifnet *loif;
896 void ether_ifattach(struct ifnet *, const uint8_t *,
897 struct lwkt_serialize *);
898 void ether_ifattach_bpf(struct ifnet *, const uint8_t *, u_int, u_int,
899 struct lwkt_serialize *);
900 void ether_ifdetach(struct ifnet *);
901 void ether_demux(struct mbuf *);
902 void ether_demux_oncpu(struct ifnet *, struct mbuf *);
903 void ether_reinput_oncpu(struct ifnet *, struct mbuf *, int);
904 void ether_input(struct ifnet *, struct mbuf *,
905 const struct pktinfo *, int);
906 int ether_output_frame(struct ifnet *, struct mbuf *);
907 int ether_ioctl(struct ifnet *, u_long, caddr_t);
908 u_char *kether_aton(const char *, u_char *);
909 char *kether_ntoa(const u_char *, char *);
910 struct ifnet *ether_bridge_interface(struct ifnet *ifp);
911 uint32_t ether_crc32_le(const uint8_t *, size_t);
912 uint32_t ether_crc32_be(const uint8_t *, size_t);
914 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **);
915 int if_addmulti_serialized(struct ifnet *, struct sockaddr *,
916 struct ifmultiaddr **);
917 int if_allmulti(struct ifnet *, int);
918 void if_attach(struct ifnet *, struct lwkt_serialize *);
919 int if_delmulti(struct ifnet *, struct sockaddr *);
920 void if_delallmulti_serialized(struct ifnet *ifp);
921 void if_purgeaddrs_nolink(struct ifnet *);
922 void if_detach(struct ifnet *);
923 void if_down(struct ifnet *);
924 void if_link_state_change(struct ifnet *);
925 void if_initname(struct ifnet *, const char *, int);
926 int if_getanyethermac(uint16_t *, int);
927 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3);
928 struct ifnet *if_alloc(uint8_t);
929 void if_free(struct ifnet *);
930 void if_route(struct ifnet *, int flag, int fam);
931 int if_setlladdr(struct ifnet *, const u_char *, int);
932 void if_unroute(struct ifnet *, int flag, int fam);
933 void if_up(struct ifnet *);
934 /*void ifinit(void);*/ /* declared in systm.h for main() */
935 int ifioctl(struct socket *, u_long, caddr_t, struct ucred *);
936 int ifpromisc(struct ifnet *, int);
938 struct ifg_group *if_creategroup(const char *);
939 int if_addgroup(struct ifnet *, const char *);
940 int if_delgroup(struct ifnet *, const char *);
941 int if_getgroup(caddr_t, struct ifnet *);
942 int if_getgroupmembers(caddr_t);
944 struct ifaddr *ifa_ifwithaddr(struct sockaddr *);
945 struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *);
946 struct ifaddr *ifa_ifwithnet(struct sockaddr *);
947 struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *);
948 struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *);
950 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp);
951 typedef void if_com_free_t(void *com, u_char type);
952 void if_register_com_alloc(u_char, if_com_alloc_t *a, if_com_free_t *);
953 void if_deregister_com_alloc(u_char);
955 void *ifa_create(int);
956 void ifa_destroy(struct ifaddr *);
957 void ifa_iflink(struct ifaddr *, struct ifnet *, int);
958 void ifa_ifunlink(struct ifaddr *, struct ifnet *);
959 void ifa_marker_init(struct ifaddr_marker *, struct ifnet *);
961 struct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *);
962 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen);
963 void if_devstart(struct ifnet *ifp); /* COMPAT */
964 void if_devstart_sched(struct ifnet *ifp); /* COMPAT */
966 void ifnet_lock(void);
967 void ifnet_unlock(void);
969 #define IF_LLSOCKADDR(ifp) \
970 ((struct sockaddr_dl *)(ifp)->if_lladdr->ifa_addr)
971 #define IF_LLADDR(ifp) LLADDR(IF_LLSOCKADDR(ifp))
974 int ifpoll_register(struct ifnet *);
975 int ifpoll_deregister(struct ifnet *);
976 #endif /* IFPOLL_ENABLE */
980 #endif /* !_NET_IF_VAR_H_ */