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 * Routines exist for locating interfaces by their addresses
72 * or for locating a interface on a certain network, as well as more general
73 * routing and gateway routines maintaining information used to locate
74 * interfaces. These routines live in the files if.c and route.c
78 * Forward structure declarations for function prototypes [sic].
87 struct lwkt_serialize;
88 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/systm.h> /* XXX */
104 #include <sys/thread2.h>
107 #define IF_DUNIT_NONE -1
109 TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */
110 TAILQ_HEAD(ifaddrhead, ifaddr_container); /* instantiation is preserved in the list */
111 TAILQ_HEAD(ifprefixhead, ifprefix);
112 TAILQ_HEAD(ifmultihead, ifmultiaddr);
115 * Structure defining a queue for a network interface.
118 struct mbuf *ifq_head;
119 struct mbuf *ifq_tail;
126 * Note of DEVICE_POLLING
127 * 1) Any file(*.c) that depends on DEVICE_POLLING supports in this
128 * file should include opt_polling.h at its beginning.
129 * 2) When struct changes, which are conditioned by DEVICE_POLLING,
130 * are to be introduced, please keep the struct's size and layout
131 * same, no matter whether DEVICE_POLLING is defined or not.
132 * See ifnet.if_poll and ifnet.if_poll_unused for example.
135 #ifdef DEVICE_POLLING
136 enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS, POLL_DEREGISTER,
140 enum ifnet_serialize {
142 IFNET_SERIALIZE_MAIN,
143 IFNET_SERIALIZE_TX_BASE = 0x10000000,
144 IFNET_SERIALIZE_RX_BASE = 0x20000000
146 #define IFNET_SERIALIZE_TX IFNET_SERIALIZE_TX_BASE
147 #define IFNET_SERIALIZE_RX(i) (IFNET_SERIALIZE_RX_BASE + (i))
149 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
152 * Structure defining a network interface.
154 * (Would like to call this struct ``if'', but C isn't PL/1.)
158 * NB: For FreeBSD, it is assumed that each NIC driver's softc starts with
159 * one of these structures, typically held within an arpcom structure.
161 * struct <foo>_softc {
163 * struct ifnet ac_if;
169 * The assumption is used in a number of places, including many
170 * files in sys/net, device drivers, and sys/dev/mii.c:miibus_attach().
172 * Unfortunately devices' softc are opaque, so we depend on this layout
173 * to locate the struct ifnet from the softc in the generic code.
177 * ifnet is protected by calling if_serialize, if_tryserialize and
178 * if_deserialize serialize functions with the ifnet_serialize parameter.
179 * ifnet.if_snd is protected by its own spinlock. Callers of if_ioctl,
180 * if_watchdog, if_init, if_resolvemulti, and if_poll should call the
181 * ifnet serialize functions with IFNET_SERIALIZE_ALL. Callers of if_start
182 * sould call the ifnet serialize functions with IFNET_SERIALIZE_TX.
184 * FIXME: Device drivers usually use the same serializer for their interrupt
185 * FIXME: but this is not required.
187 * Caller of if_output must not serialize ifnet by calling ifnet serialize
188 * functions; if_output will call the ifnet serialize functions based on
189 * its own needs. Caller of if_input does not necessarily hold the related
192 * If a device driver installs the same serializer for its interrupt
193 * as for ifnet, then the driver only really needs to worry about further
194 * serialization in timeout based entry points. All other entry points
195 * will already be serialized. Older ISA drivers still using the old
196 * interrupt infrastructure will have to obtain and release the serializer
197 * in their interrupt routine themselves.
200 void *if_softc; /* pointer to driver state */
201 void *if_l2com; /* pointer to protocol bits */
202 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */
203 char if_xname[IFNAMSIZ]; /* external name (name + unit) */
204 const char *if_dname; /* driver name */
205 int if_dunit; /* unit or IF_DUNIT_NONE */
206 void *if_vlantrunks; /* vlan trunks */
207 struct ifaddrhead *if_addrheads; /* array[NCPU] of TAILQs of addresses per if */
208 int if_pcount; /* number of promiscuous listeners */
209 void *if_carp; /* carp interfaces */
210 struct bpf_if *if_bpf; /* packet filter structure */
211 u_short if_index; /* numeric abbreviation for this if */
212 short if_timer; /* time 'til if_watchdog called */
213 int if_flags; /* up/down, broadcast, etc. */
214 int if_capabilities; /* interface capabilities */
215 int if_capenable; /* enabled features */
216 void *if_linkmib; /* link-type-specific MIB data */
217 size_t if_linkmiblen; /* length of above data */
218 struct if_data if_data;
219 struct ifmultihead if_multiaddrs; /* multicast addresses configured */
220 int if_amcount; /* number of all-multicast requests */
221 /* procedure handles */
222 int (*if_output) /* output routine (enqueue) */
223 (struct ifnet *, struct mbuf *, struct sockaddr *,
225 void (*if_input) /* input routine from hardware driver */
226 (struct ifnet *, struct mbuf *);
227 void (*if_start) /* initiate output routine */
229 int (*if_ioctl) /* ioctl routine */
230 (struct ifnet *, u_long, caddr_t, struct ucred *);
231 void (*if_watchdog) /* timer routine */
233 void (*if_init) /* Init routine */
235 int (*if_resolvemulti) /* validate/resolve multicast */
236 (struct ifnet *, struct sockaddr **, struct sockaddr *);
237 int (*if_start_cpuid) /* cpuid to run if_start */
239 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */
240 #ifdef DEVICE_POLLING
241 void (*if_poll) /* IFF_POLLING support */
242 (struct ifnet *, enum poll_cmd, int);
246 void (*if_poll_unused)(void);
247 int if_poll_cpuid_used;
250 (struct ifnet *, enum ifnet_serialize);
251 void (*if_deserialize)
252 (struct ifnet *, enum ifnet_serialize);
253 int (*if_tryserialize)
254 (struct ifnet *, enum ifnet_serialize);
256 void (*if_serialize_assert)
257 (struct ifnet *, enum ifnet_serialize, boolean_t);
260 void (*if_serialize_unused)(void);
264 (struct ifnet *, struct ifpoll_info *);
268 void (*if_npoll_unused)(void);
269 int if_npoll_cpuid_unused;
271 struct ifaltq if_snd; /* output queue (includes altq) */
272 struct ifprefixhead if_prefixhead; /* list of prefixes per if */
273 const uint8_t *if_broadcastaddr;
274 void *if_bridge; /* bridge glue */
275 void *if_afdata[AF_MAX];
276 struct ifaddr *if_lladdr;
277 struct lwkt_serialize *if_serializer; /* serializer or MP lock */
278 struct lwkt_serialize if_default_serializer; /* if not supplied */
279 struct mtx if_ioctl_mtx; /* high-level ioctl serializing mutex */
281 struct netmsg_base *if_start_nmsg; /* percpu msgs to sched if_start */
282 void *if_pf_kif; /* pf interface abstraction */
285 typedef void if_init_f_t (void *);
287 #define if_mtu if_data.ifi_mtu
288 #define if_type if_data.ifi_type
289 #define if_physical if_data.ifi_physical
290 #define if_addrlen if_data.ifi_addrlen
291 #define if_hdrlen if_data.ifi_hdrlen
292 #define if_metric if_data.ifi_metric
293 #define if_link_state if_data.ifi_link_state
294 #define if_baudrate if_data.ifi_baudrate
295 #define if_hwassist if_data.ifi_hwassist
296 #define if_ipackets if_data.ifi_ipackets
297 #define if_ierrors if_data.ifi_ierrors
298 #define if_opackets if_data.ifi_opackets
299 #define if_oerrors if_data.ifi_oerrors
300 #define if_collisions if_data.ifi_collisions
301 #define if_ibytes if_data.ifi_ibytes
302 #define if_obytes if_data.ifi_obytes
303 #define if_imcasts if_data.ifi_imcasts
304 #define if_omcasts if_data.ifi_omcasts
305 #define if_iqdrops if_data.ifi_iqdrops
306 #define if_noproto if_data.ifi_noproto
307 #define if_lastchange if_data.ifi_lastchange
308 #define if_recvquota if_data.ifi_recvquota
309 #define if_xmitquota if_data.ifi_xmitquota
310 #define if_rawoutput(if, m, sa) if_output(if, m, sa, NULL)
312 /* for compatibility with other BSDs */
313 #define if_list if_link
318 * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq)
319 * are queues of messages stored on ifqueue structures
320 * (defined above). Entries are added to and deleted from these structures
321 * by these macros, which should be called with ipl raised to splimp().
323 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
324 #define IF_DROP(ifq) ((ifq)->ifq_drops++)
325 #define IF_QLEN(ifq) ((ifq)->ifq_len)
326 #define IF_QEMPTY(ifq) (IF_QLEN(ifq) == 0)
328 #define IF_ENQUEUE(ifq, m) do { \
329 (m)->m_nextpkt = NULL; \
330 if ((ifq)->ifq_tail == NULL) \
331 (ifq)->ifq_head = m; \
333 (ifq)->ifq_tail->m_nextpkt = m; \
334 (ifq)->ifq_tail = m; \
338 #define IF_PREPEND(ifq, m) do { \
339 (m)->m_nextpkt = (ifq)->ifq_head; \
340 if ((ifq)->ifq_tail == NULL) \
341 (ifq)->ifq_tail = (m); \
342 (ifq)->ifq_head = (m); \
346 #define IF_DEQUEUE(ifq, m) do { \
347 (m) = (ifq)->ifq_head; \
349 if (((ifq)->ifq_head = (m)->m_nextpkt) == NULL) \
350 (ifq)->ifq_tail = NULL; \
351 (m)->m_nextpkt = NULL; \
356 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head)
358 #define IF_DRAIN(ifq) do { \
361 IF_DEQUEUE(ifq, m); \
370 /* interface link layer address change event */
371 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *);
372 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t);
375 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) \
376 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, TRUE)
377 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) \
378 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, FALSE)
380 #define ASSERT_IFNET_SERIALIZED_TX(ifp) \
381 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_TX, TRUE)
382 #define ASSERT_IFNET_NOT_SERIALIZED_TX(ifp) \
383 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_TX, FALSE)
385 #define ASSERT_IFNET_SERIALIZED_MAIN(ifp) \
386 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_MAIN, TRUE)
387 #define ASSERT_IFNET_NOT_SERIALIZED_MAIN(ifp) \
388 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_MAIN, FALSE)
390 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) ((void)0)
391 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) ((void)0)
392 #define ASSERT_IFNET_SERIALIZED_TX(ifp) ((void)0)
393 #define ASSERT_IFNET_NOT_SERIALIZED_TX(ifp) ((void)0)
394 #define ASSERT_IFNET_SERIALIZED_MAIN(ifp) ((void)0)
395 #define ASSERT_IFNET_NOT_SERIALIZED_MAIN(ifp) ((void)0)
399 ifnet_serialize_all(struct ifnet *_ifp)
401 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_ALL);
405 ifnet_deserialize_all(struct ifnet *_ifp)
407 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_ALL);
411 ifnet_tryserialize_all(struct ifnet *_ifp)
413 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_ALL);
417 ifnet_serialize_tx(struct ifnet *_ifp)
419 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_TX);
423 ifnet_deserialize_tx(struct ifnet *_ifp)
425 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_TX);
429 ifnet_tryserialize_tx(struct ifnet *_ifp)
431 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_TX);
435 ifnet_serialize_main(struct ifnet *_ifp)
437 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_MAIN);
441 ifnet_deserialize_main(struct ifnet *_ifp)
443 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_MAIN);
447 ifnet_tryserialize_main(struct ifnet *_ifp)
449 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_MAIN);
453 * DEPRECATED - should not be used by any new driver. This code uses the
454 * old queueing interface and if_start ABI and does not use the ifp's
457 #define IF_HANDOFF(ifq, m, ifp) if_handoff(ifq, m, ifp, 0)
458 #define IF_HANDOFF_ADJ(ifq, m, ifp, adj) if_handoff(ifq, m, ifp, adj)
461 if_handoff(struct ifqueue *_ifq, struct mbuf *_m, struct ifnet *_ifp,
464 int _need_if_start = 0;
468 if (IF_QFULL(_ifq)) {
475 _ifp->if_obytes += _m->m_pkthdr.len + _adjust;
476 if (_m->m_flags & M_MCAST)
478 _need_if_start = !(_ifp->if_flags & IFF_OACTIVE);
480 IF_ENQUEUE(_ifq, _m);
481 if (_need_if_start) {
482 (*_ifp->if_start)(_ifp);
489 * 72 was chosen below because it is the size of a TCP/IP
490 * header (40) + the minimum mss (32).
493 #define IF_MAXMTU 65535
499 struct in_ifaddr_container {
500 struct in_ifaddr *ia;
501 LIST_ENTRY(in_ifaddr_container) ia_hash;
502 /* entry in bucket of inet addresses */
503 TAILQ_ENTRY(in_ifaddr_container) ia_link;
504 /* list of internet addresses */
505 struct ifaddr_container *ia_ifac; /* parent ifaddr_container */
508 struct ifaddr_container {
509 #define IFA_CONTAINER_MAGIC 0x19810219
510 #define IFA_CONTAINER_DEAD 0xc0dedead
511 uint32_t ifa_magic; /* IFA_CONTAINER_MAGIC */
513 TAILQ_ENTRY(ifaddr_container) ifa_link; /* queue macro glue */
514 u_int ifa_refcnt; /* references to this structure */
515 uint16_t ifa_listmask; /* IFA_LIST_ */
516 uint16_t ifa_prflags; /* protocol specific flags */
519 * Protocol specific states
522 struct in_ifaddr_container u_in_ifac;
526 #define IFA_LIST_IFADDRHEAD 0x01 /* on ifnet.if_addrheads[cpuid] */
527 #define IFA_LIST_IN_IFADDRHEAD 0x02 /* on in_ifaddrheads[cpuid] */
528 #define IFA_LIST_IN_IFADDRHASH 0x04 /* on in_ifaddrhashtbls[cpuid] */
530 #define IFA_PRF_FLAG0 0x01
531 #define IFA_PRF_FLAG1 0x02
532 #define IFA_PRF_FLAG2 0x04
533 #define IFA_PRF_FLAG3 0x08
536 * The ifaddr structure contains information about one address
537 * of an interface. They are maintained by the different address families,
538 * are allocated and attached when an address is set, and are linked
539 * together so all addresses for an interface can be located.
542 struct sockaddr *ifa_addr; /* address of interface */
543 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
544 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
545 struct sockaddr *ifa_netmask; /* used to determine subnet */
546 struct if_data if_data; /* not all members are meaningful */
547 struct ifnet *ifa_ifp; /* back-pointer to interface */
549 struct ifaddr_container *ifa_containers;
550 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
551 (int, struct rtentry *, struct rt_addrinfo *);
552 u_short ifa_flags; /* mostly rt_flags for cloning */
553 int ifa_ncnt; /* # of valid ifaddr_container */
554 int ifa_metric; /* cost of going out this interface */
556 struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */
558 int (*ifa_claim_addr) /* check if an addr goes to this if */
559 (struct ifaddr *, struct sockaddr *);
562 #define IFA_ROUTE RTF_UP /* route installed */
564 /* for compatibility with other BSDs */
565 #define ifa_list ifa_link
568 * The prefix structure contains information about one prefix
569 * of an interface. They are maintained by the different address families,
570 * are allocated and attached when an prefix or an address is set,
571 * and are linked together so all prefixes for an interface can be located.
574 struct sockaddr *ifpr_prefix; /* prefix of interface */
575 struct ifnet *ifpr_ifp; /* back-pointer to interface */
576 TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */
577 u_char ifpr_plen; /* prefix length in bits */
578 u_char ifpr_type; /* protocol dependent prefix type */
582 * Multicast address structure. This is analogous to the ifaddr
583 * structure except that it keeps track of multicast addresses.
584 * Also, the reference count here is a count of requests for this
585 * address, not a count of pointers to this structure.
588 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */
589 struct sockaddr *ifma_addr; /* address this membership is for */
590 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */
591 struct ifnet *ifma_ifp; /* back-pointer to interface */
592 u_int ifma_refcount; /* reference count */
593 void *ifma_protospec; /* protocol-specific state, if any */
598 #ifndef _SYS_SERIALIZE2_H_
599 #include <sys/serialize2.h>
608 /* interface address change event */
609 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *,
610 enum ifaddr_event, struct ifaddr *);
611 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t);
612 /* new interface attach event */
613 typedef void (*ifnet_attach_event_handler_t)(void *, struct ifnet *);
614 EVENTHANDLER_DECLARE(ifnet_attach_event, ifnet_attach_event_handler_t);
615 /* interface detach event */
616 typedef void (*ifnet_detach_event_handler_t)(void *, struct ifnet *);
617 EVENTHANDLER_DECLARE(ifnet_detach_event, ifnet_detach_event_handler_t);
623 char ifg_group[IFNAMSIZ];
626 int ifg_carp_demoted;
627 TAILQ_HEAD(, ifg_member) ifg_members;
628 TAILQ_ENTRY(ifg_group) ifg_next;
632 TAILQ_ENTRY(ifg_member) ifgm_next;
633 struct ifnet *ifgm_ifp;
637 struct ifg_group *ifgl_group;
638 TAILQ_ENTRY(ifg_list) ifgl_next;
641 /* group attach event */
642 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *);
643 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t);
644 /* group detach event */
645 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *);
646 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t);
647 /* group change event */
648 typedef void (*group_change_event_handler_t)(void *, const char *);
649 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t);
653 #define ASSERT_IFAC_VALID(ifac) do { \
654 KKASSERT((ifac)->ifa_magic == IFA_CONTAINER_MAGIC); \
655 KKASSERT((ifac)->ifa_refcnt > 0); \
658 #define ASSERT_IFAC_VALID(ifac) ((void)0)
662 _IFAREF(struct ifaddr *_ifa, int _cpu_id)
664 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id];
667 ASSERT_IFAC_VALID(_ifac);
673 IFAREF(struct ifaddr *_ifa)
675 _IFAREF(_ifa, mycpuid);
678 #include <sys/malloc.h>
680 MALLOC_DECLARE(M_IFADDR);
681 MALLOC_DECLARE(M_IFMADDR);
682 MALLOC_DECLARE(M_IFNET);
684 void ifac_free(struct ifaddr_container *, int);
687 _IFAFREE(struct ifaddr *_ifa, int _cpu_id)
689 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id];
692 ASSERT_IFAC_VALID(_ifac);
693 if (--_ifac->ifa_refcnt == 0)
694 ifac_free(_ifac, _cpu_id);
699 IFAFREE(struct ifaddr *_ifa)
701 _IFAFREE(_ifa, mycpuid);
704 struct lwkt_port *ifnet_portfn(int);
705 int ifnet_domsg(struct lwkt_msg *, int);
706 void ifnet_sendmsg(struct lwkt_msg *, int);
707 void ifnet_forwardmsg(struct lwkt_msg *, int);
708 struct ifnet *ifnet_byindex(unsigned short);
711 ifa_domsg(struct lwkt_msg *_lmsg, int _cpu)
713 return ifnet_domsg(_lmsg, _cpu);
717 ifa_sendmsg(struct lwkt_msg *_lmsg, int _cpu)
719 ifnet_sendmsg(_lmsg, _cpu);
723 ifa_forwardmsg(struct lwkt_msg *_lmsg, int _nextcpu)
725 ifnet_forwardmsg(_lmsg, _nextcpu);
729 ifnet_serialize_array_index(int _arrcnt, int _txoff, int _rxoff,
730 enum ifnet_serialize _slz)
734 if (_slz == IFNET_SERIALIZE_MAIN) {
736 } else if (_slz & IFNET_SERIALIZE_TX_BASE) {
737 _off = (_slz & ~IFNET_SERIALIZE_TX_BASE) + _txoff;
738 KASSERT(_off < _arrcnt,
739 ("invalid TX serializer %#x", _slz));
740 } else if (_slz & IFNET_SERIALIZE_RX_BASE) {
741 _off = (_slz & ~IFNET_SERIALIZE_RX_BASE) + _rxoff;
742 KASSERT(_off < _arrcnt,
743 ("invalid RX serializer %#x", _slz));
745 panic("unknown serializer %#x", _slz);
751 ifnet_serialize_array_enter(lwkt_serialize_t *_arr, int _arrcnt,
752 int _txoff, int _rxoff, enum ifnet_serialize _slz)
756 if (_slz == IFNET_SERIALIZE_ALL) {
757 lwkt_serialize_array_enter(_arr, _arrcnt, 0);
761 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz);
762 lwkt_serialize_enter(_arr[_off]);
766 ifnet_serialize_array_exit(lwkt_serialize_t *_arr, int _arrcnt,
767 int _txoff, int _rxoff, enum ifnet_serialize _slz)
771 if (_slz == IFNET_SERIALIZE_ALL) {
772 lwkt_serialize_array_exit(_arr, _arrcnt, 0);
776 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz);
777 lwkt_serialize_exit(_arr[_off]);
781 ifnet_serialize_array_try(lwkt_serialize_t *_arr, int _arrcnt,
782 int _txoff, int _rxoff, enum ifnet_serialize _slz)
786 if (_slz == IFNET_SERIALIZE_ALL)
787 return lwkt_serialize_array_try(_arr, _arrcnt, 0);
789 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz);
790 return lwkt_serialize_try(_arr[_off]);
796 ifnet_serialize_array_assert(lwkt_serialize_t *_arr, int _arrcnt,
797 int _txoff, int _rxoff, enum ifnet_serialize _slz, boolean_t _serialized)
801 if (_slz == IFNET_SERIALIZE_ALL) {
805 for (_i = 0; _i < _arrcnt; ++_i)
806 ASSERT_SERIALIZED(_arr[_i]);
808 for (_i = 0; _i < _arrcnt; ++_i)
809 ASSERT_NOT_SERIALIZED(_arr[_i]);
814 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz);
816 ASSERT_SERIALIZED(_arr[_off]);
818 ASSERT_NOT_SERIALIZED(_arr[_off]);
821 #endif /* INVARIANTS */
823 #define REINPUT_KEEPRCVIF 0x0001 /* ether_reinput_oncpu() */
824 #define REINPUT_RUNBPF 0x0002 /* ether_reinput_oncpu() */
826 extern struct ifnethead ifnet;
827 extern struct ifnet **ifindex2ifnet;
828 extern int ifqmaxlen;
829 extern struct ifnet loif[];
835 void ether_ifattach(struct ifnet *, uint8_t *, struct lwkt_serialize *);
836 void ether_ifattach_bpf(struct ifnet *, uint8_t *, u_int, u_int,
837 struct lwkt_serialize *);
838 void ether_ifdetach(struct ifnet *);
839 void ether_demux(struct mbuf *);
840 void ether_demux_oncpu(struct ifnet *, struct mbuf *);
841 void ether_reinput_oncpu(struct ifnet *, struct mbuf *, int);
842 void ether_input_pkt(struct ifnet *, struct mbuf *, const struct pktinfo *);
843 int ether_output_frame(struct ifnet *, struct mbuf *);
844 int ether_ioctl(struct ifnet *, u_long, caddr_t);
845 boolean_t ether_tso_pullup(struct mbuf **, int *, struct ip **, int *,
846 struct tcphdr **, int *);
847 struct ifnet *ether_bridge_interface(struct ifnet *ifp);
848 uint32_t ether_crc32_le(const uint8_t *, size_t);
849 uint32_t ether_crc32_be(const uint8_t *, size_t);
851 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **);
852 int if_allmulti(struct ifnet *, int);
853 void if_attach(struct ifnet *, struct lwkt_serialize *);
854 int if_delmulti(struct ifnet *, struct sockaddr *);
855 void if_delallmulti(struct ifnet *ifp);
856 void if_purgeaddrs_nolink(struct ifnet *);
857 void if_detach(struct ifnet *);
858 void if_down(struct ifnet *);
859 void if_link_state_change(struct ifnet *);
860 void if_initname(struct ifnet *, const char *, int);
861 int if_getanyethermac(uint16_t *, int);
862 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3);
863 struct ifnet *if_alloc(uint8_t);
864 void if_free(struct ifnet *);
865 void if_route(struct ifnet *, int flag, int fam);
866 int if_setlladdr(struct ifnet *, const u_char *, int);
867 void if_unroute(struct ifnet *, int flag, int fam);
868 void if_up(struct ifnet *);
869 /*void ifinit(void);*/ /* declared in systm.h for main() */
870 int ifioctl(struct socket *, u_long, caddr_t, struct ucred *);
871 int ifpromisc(struct ifnet *, int);
872 struct ifnet *ifunit(const char *);
873 struct ifnet *if_withname(struct sockaddr *);
875 struct ifg_group *if_creategroup(const char *);
876 int if_addgroup(struct ifnet *, const char *);
877 int if_delgroup(struct ifnet *, const char *);
878 int if_getgroup(caddr_t, struct ifnet *);
879 int if_getgroupmembers(caddr_t);
881 struct ifaddr *ifa_ifwithaddr(struct sockaddr *);
882 struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *);
883 struct ifaddr *ifa_ifwithnet(struct sockaddr *);
884 struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *);
885 struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *);
887 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp);
888 typedef void if_com_free_t(void *com, u_char type);
889 void if_register_com_alloc(u_char, if_com_alloc_t *a, if_com_free_t *);
890 void if_deregister_com_alloc(u_char);
892 void *ifa_create(int, int);
893 void ifa_destroy(struct ifaddr *);
894 void ifa_iflink(struct ifaddr *, struct ifnet *, int);
895 void ifa_ifunlink(struct ifaddr *, struct ifnet *);
897 struct ifaddr *ifaddr_byindex(unsigned short);
899 struct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *);
900 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen);
901 void if_devstart(struct ifnet *ifp);
902 int if_ring_count2(int cnt, int cnt_max);
904 #define IF_LLSOCKADDR(ifp) \
905 ((struct sockaddr_dl *)(ifp)->if_lladdr->ifa_addr)
906 #define IF_LLADDR(ifp) LLADDR(IF_LLSOCKADDR(ifp))
908 #ifdef DEVICE_POLLING
909 typedef void poll_handler_t (struct ifnet *ifp, enum poll_cmd cmd, int count);
910 int ether_poll_register(struct ifnet *);
911 int ether_poll_deregister(struct ifnet *);
912 int ether_pollcpu_register(struct ifnet *, int);
913 #endif /* DEVICE_POLLING */
916 int ifpoll_register(struct ifnet *);
917 int ifpoll_deregister(struct ifnet *);
918 #endif /* IFPOLL_ENABLE */
922 #endif /* !_NET_IF_VAR_H_ */