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 *);
267 void (*if_qpoll_unused)(void);
269 struct ifaltq if_snd; /* output queue (includes altq) */
270 struct ifprefixhead if_prefixhead; /* list of prefixes per if */
271 const uint8_t *if_broadcastaddr;
272 void *if_bridge; /* bridge glue */
273 void *if_afdata[AF_MAX];
274 struct ifaddr *if_lladdr;
275 struct lwkt_serialize *if_serializer; /* serializer or MP lock */
276 struct lwkt_serialize if_default_serializer; /* if not supplied */
277 struct mtx if_ioctl_mtx; /* high-level ioctl serializing mutex */
279 struct netmsg_base *if_start_nmsg; /* percpu msgs to sched if_start */
280 void *if_pf_kif; /* pf interface abstraction */
283 typedef void if_init_f_t (void *);
285 #define if_mtu if_data.ifi_mtu
286 #define if_type if_data.ifi_type
287 #define if_physical if_data.ifi_physical
288 #define if_addrlen if_data.ifi_addrlen
289 #define if_hdrlen if_data.ifi_hdrlen
290 #define if_metric if_data.ifi_metric
291 #define if_link_state if_data.ifi_link_state
292 #define if_baudrate if_data.ifi_baudrate
293 #define if_hwassist if_data.ifi_hwassist
294 #define if_ipackets if_data.ifi_ipackets
295 #define if_ierrors if_data.ifi_ierrors
296 #define if_opackets if_data.ifi_opackets
297 #define if_oerrors if_data.ifi_oerrors
298 #define if_collisions if_data.ifi_collisions
299 #define if_ibytes if_data.ifi_ibytes
300 #define if_obytes if_data.ifi_obytes
301 #define if_imcasts if_data.ifi_imcasts
302 #define if_omcasts if_data.ifi_omcasts
303 #define if_iqdrops if_data.ifi_iqdrops
304 #define if_noproto if_data.ifi_noproto
305 #define if_lastchange if_data.ifi_lastchange
306 #define if_recvquota if_data.ifi_recvquota
307 #define if_xmitquota if_data.ifi_xmitquota
308 #define if_rawoutput(if, m, sa) if_output(if, m, sa, NULL)
310 /* for compatibility with other BSDs */
311 #define if_list if_link
316 * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq)
317 * are queues of messages stored on ifqueue structures
318 * (defined above). Entries are added to and deleted from these structures
319 * by these macros, which should be called with ipl raised to splimp().
321 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
322 #define IF_DROP(ifq) ((ifq)->ifq_drops++)
323 #define IF_QLEN(ifq) ((ifq)->ifq_len)
324 #define IF_QEMPTY(ifq) (IF_QLEN(ifq) == 0)
326 #define IF_ENQUEUE(ifq, m) do { \
327 (m)->m_nextpkt = NULL; \
328 if ((ifq)->ifq_tail == NULL) \
329 (ifq)->ifq_head = m; \
331 (ifq)->ifq_tail->m_nextpkt = m; \
332 (ifq)->ifq_tail = m; \
336 #define IF_PREPEND(ifq, m) do { \
337 (m)->m_nextpkt = (ifq)->ifq_head; \
338 if ((ifq)->ifq_tail == NULL) \
339 (ifq)->ifq_tail = (m); \
340 (ifq)->ifq_head = (m); \
344 #define IF_DEQUEUE(ifq, m) do { \
345 (m) = (ifq)->ifq_head; \
347 if (((ifq)->ifq_head = (m)->m_nextpkt) == NULL) \
348 (ifq)->ifq_tail = NULL; \
349 (m)->m_nextpkt = NULL; \
354 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head)
356 #define IF_DRAIN(ifq) do { \
359 IF_DEQUEUE(ifq, m); \
368 /* interface link layer address change event */
369 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *);
370 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t);
373 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) \
374 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, TRUE)
375 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) \
376 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, FALSE)
378 #define ASSERT_IFNET_SERIALIZED_TX(ifp) \
379 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_TX, TRUE)
380 #define ASSERT_IFNET_NOT_SERIALIZED_TX(ifp) \
381 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_TX, FALSE)
383 #define ASSERT_IFNET_SERIALIZED_MAIN(ifp) \
384 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_MAIN, TRUE)
385 #define ASSERT_IFNET_NOT_SERIALIZED_MAIN(ifp) \
386 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_MAIN, FALSE)
388 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) ((void)0)
389 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) ((void)0)
390 #define ASSERT_IFNET_SERIALIZED_TX(ifp) ((void)0)
391 #define ASSERT_IFNET_NOT_SERIALIZED_TX(ifp) ((void)0)
392 #define ASSERT_IFNET_SERIALIZED_MAIN(ifp) ((void)0)
393 #define ASSERT_IFNET_NOT_SERIALIZED_MAIN(ifp) ((void)0)
397 ifnet_serialize_all(struct ifnet *_ifp)
399 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_ALL);
403 ifnet_deserialize_all(struct ifnet *_ifp)
405 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_ALL);
409 ifnet_tryserialize_all(struct ifnet *_ifp)
411 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_ALL);
415 ifnet_serialize_tx(struct ifnet *_ifp)
417 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_TX);
421 ifnet_deserialize_tx(struct ifnet *_ifp)
423 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_TX);
427 ifnet_tryserialize_tx(struct ifnet *_ifp)
429 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_TX);
433 ifnet_serialize_main(struct ifnet *_ifp)
435 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_MAIN);
439 ifnet_deserialize_main(struct ifnet *_ifp)
441 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_MAIN);
445 ifnet_tryserialize_main(struct ifnet *_ifp)
447 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_MAIN);
451 * DEPRECATED - should not be used by any new driver. This code uses the
452 * old queueing interface and if_start ABI and does not use the ifp's
455 #define IF_HANDOFF(ifq, m, ifp) if_handoff(ifq, m, ifp, 0)
456 #define IF_HANDOFF_ADJ(ifq, m, ifp, adj) if_handoff(ifq, m, ifp, adj)
459 if_handoff(struct ifqueue *_ifq, struct mbuf *_m, struct ifnet *_ifp,
462 int _need_if_start = 0;
466 if (IF_QFULL(_ifq)) {
473 _ifp->if_obytes += _m->m_pkthdr.len + _adjust;
474 if (_m->m_flags & M_MCAST)
476 _need_if_start = !(_ifp->if_flags & IFF_OACTIVE);
478 IF_ENQUEUE(_ifq, _m);
479 if (_need_if_start) {
480 (*_ifp->if_start)(_ifp);
487 * 72 was chosen below because it is the size of a TCP/IP
488 * header (40) + the minimum mss (32).
491 #define IF_MAXMTU 65535
497 struct in_ifaddr_container {
498 struct in_ifaddr *ia;
499 LIST_ENTRY(in_ifaddr_container) ia_hash;
500 /* entry in bucket of inet addresses */
501 TAILQ_ENTRY(in_ifaddr_container) ia_link;
502 /* list of internet addresses */
503 struct ifaddr_container *ia_ifac; /* parent ifaddr_container */
506 struct ifaddr_container {
507 #define IFA_CONTAINER_MAGIC 0x19810219
508 #define IFA_CONTAINER_DEAD 0xc0dedead
509 uint32_t ifa_magic; /* IFA_CONTAINER_MAGIC */
511 TAILQ_ENTRY(ifaddr_container) ifa_link; /* queue macro glue */
512 u_int ifa_refcnt; /* references to this structure */
513 uint16_t ifa_listmask; /* IFA_LIST_ */
514 uint16_t ifa_prflags; /* protocol specific flags */
517 * Protocol specific states
520 struct in_ifaddr_container u_in_ifac;
524 #define IFA_LIST_IFADDRHEAD 0x01 /* on ifnet.if_addrheads[cpuid] */
525 #define IFA_LIST_IN_IFADDRHEAD 0x02 /* on in_ifaddrheads[cpuid] */
526 #define IFA_LIST_IN_IFADDRHASH 0x04 /* on in_ifaddrhashtbls[cpuid] */
528 #define IFA_PRF_FLAG0 0x01
529 #define IFA_PRF_FLAG1 0x02
530 #define IFA_PRF_FLAG2 0x04
531 #define IFA_PRF_FLAG3 0x08
534 * The ifaddr structure contains information about one address
535 * of an interface. They are maintained by the different address families,
536 * are allocated and attached when an address is set, and are linked
537 * together so all addresses for an interface can be located.
540 struct sockaddr *ifa_addr; /* address of interface */
541 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
542 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
543 struct sockaddr *ifa_netmask; /* used to determine subnet */
544 struct if_data if_data; /* not all members are meaningful */
545 struct ifnet *ifa_ifp; /* back-pointer to interface */
547 struct ifaddr_container *ifa_containers;
548 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
549 (int, struct rtentry *, struct rt_addrinfo *);
550 u_short ifa_flags; /* mostly rt_flags for cloning */
551 int ifa_ncnt; /* # of valid ifaddr_container */
552 int ifa_metric; /* cost of going out this interface */
554 struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */
556 int (*ifa_claim_addr) /* check if an addr goes to this if */
557 (struct ifaddr *, struct sockaddr *);
560 #define IFA_ROUTE RTF_UP /* route installed */
562 /* for compatibility with other BSDs */
563 #define ifa_list ifa_link
566 * The prefix structure contains information about one prefix
567 * of an interface. They are maintained by the different address families,
568 * are allocated and attached when an prefix or an address is set,
569 * and are linked together so all prefixes for an interface can be located.
572 struct sockaddr *ifpr_prefix; /* prefix of interface */
573 struct ifnet *ifpr_ifp; /* back-pointer to interface */
574 TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */
575 u_char ifpr_plen; /* prefix length in bits */
576 u_char ifpr_type; /* protocol dependent prefix type */
580 * Multicast address structure. This is analogous to the ifaddr
581 * structure except that it keeps track of multicast addresses.
582 * Also, the reference count here is a count of requests for this
583 * address, not a count of pointers to this structure.
586 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */
587 struct sockaddr *ifma_addr; /* address this membership is for */
588 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */
589 struct ifnet *ifma_ifp; /* back-pointer to interface */
590 u_int ifma_refcount; /* reference count */
591 void *ifma_protospec; /* protocol-specific state, if any */
596 #ifndef _SYS_SERIALIZE2_H_
597 #include <sys/serialize2.h>
606 /* interface address change event */
607 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *,
608 enum ifaddr_event, struct ifaddr *);
609 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t);
610 /* new interface attach event */
611 typedef void (*ifnet_attach_event_handler_t)(void *, struct ifnet *);
612 EVENTHANDLER_DECLARE(ifnet_attach_event, ifnet_attach_event_handler_t);
613 /* interface detach event */
614 typedef void (*ifnet_detach_event_handler_t)(void *, struct ifnet *);
615 EVENTHANDLER_DECLARE(ifnet_detach_event, ifnet_detach_event_handler_t);
621 char ifg_group[IFNAMSIZ];
624 int ifg_carp_demoted;
625 TAILQ_HEAD(, ifg_member) ifg_members;
626 TAILQ_ENTRY(ifg_group) ifg_next;
630 TAILQ_ENTRY(ifg_member) ifgm_next;
631 struct ifnet *ifgm_ifp;
635 struct ifg_group *ifgl_group;
636 TAILQ_ENTRY(ifg_list) ifgl_next;
639 /* group attach event */
640 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *);
641 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t);
642 /* group detach event */
643 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *);
644 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t);
645 /* group change event */
646 typedef void (*group_change_event_handler_t)(void *, const char *);
647 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t);
651 #define ASSERT_IFAC_VALID(ifac) do { \
652 KKASSERT((ifac)->ifa_magic == IFA_CONTAINER_MAGIC); \
653 KKASSERT((ifac)->ifa_refcnt > 0); \
656 #define ASSERT_IFAC_VALID(ifac) ((void)0)
660 _IFAREF(struct ifaddr *_ifa, int _cpu_id)
662 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id];
665 ASSERT_IFAC_VALID(_ifac);
671 IFAREF(struct ifaddr *_ifa)
673 _IFAREF(_ifa, mycpuid);
676 #include <sys/malloc.h>
678 MALLOC_DECLARE(M_IFADDR);
679 MALLOC_DECLARE(M_IFMADDR);
680 MALLOC_DECLARE(M_IFNET);
682 void ifac_free(struct ifaddr_container *, int);
685 _IFAFREE(struct ifaddr *_ifa, int _cpu_id)
687 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id];
690 ASSERT_IFAC_VALID(_ifac);
691 if (--_ifac->ifa_refcnt == 0)
692 ifac_free(_ifac, _cpu_id);
697 IFAFREE(struct ifaddr *_ifa)
699 _IFAFREE(_ifa, mycpuid);
702 struct lwkt_port *ifnet_portfn(int);
703 int ifnet_domsg(struct lwkt_msg *, int);
704 void ifnet_sendmsg(struct lwkt_msg *, int);
705 void ifnet_forwardmsg(struct lwkt_msg *, int);
706 struct ifnet *ifnet_byindex(unsigned short);
709 ifa_domsg(struct lwkt_msg *_lmsg, int _cpu)
711 return ifnet_domsg(_lmsg, _cpu);
715 ifa_sendmsg(struct lwkt_msg *_lmsg, int _cpu)
717 ifnet_sendmsg(_lmsg, _cpu);
721 ifa_forwardmsg(struct lwkt_msg *_lmsg, int _nextcpu)
723 ifnet_forwardmsg(_lmsg, _nextcpu);
727 ifnet_serialize_array_index(int _arrcnt, int _txoff, int _rxoff,
728 enum ifnet_serialize _slz)
732 if (_slz == IFNET_SERIALIZE_MAIN) {
734 } else if (_slz & IFNET_SERIALIZE_TX_BASE) {
735 _off = (_slz & ~IFNET_SERIALIZE_TX_BASE) + _txoff;
736 KASSERT(_off < _arrcnt,
737 ("invalid TX serializer %#x", _slz));
738 } else if (_slz & IFNET_SERIALIZE_RX_BASE) {
739 _off = (_slz & ~IFNET_SERIALIZE_RX_BASE) + _rxoff;
740 KASSERT(_off < _arrcnt,
741 ("invalid RX serializer %#x", _slz));
743 panic("unknown serializer %#x", _slz);
749 ifnet_serialize_array_enter(lwkt_serialize_t *_arr, int _arrcnt,
750 int _txoff, int _rxoff, enum ifnet_serialize _slz)
754 if (_slz == IFNET_SERIALIZE_ALL) {
755 lwkt_serialize_array_enter(_arr, _arrcnt, 0);
759 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz);
760 lwkt_serialize_enter(_arr[_off]);
764 ifnet_serialize_array_exit(lwkt_serialize_t *_arr, int _arrcnt,
765 int _txoff, int _rxoff, enum ifnet_serialize _slz)
769 if (_slz == IFNET_SERIALIZE_ALL) {
770 lwkt_serialize_array_exit(_arr, _arrcnt, 0);
774 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz);
775 lwkt_serialize_exit(_arr[_off]);
779 ifnet_serialize_array_try(lwkt_serialize_t *_arr, int _arrcnt,
780 int _txoff, int _rxoff, enum ifnet_serialize _slz)
784 if (_slz == IFNET_SERIALIZE_ALL)
785 return lwkt_serialize_array_try(_arr, _arrcnt, 0);
787 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz);
788 return lwkt_serialize_try(_arr[_off]);
794 ifnet_serialize_array_assert(lwkt_serialize_t *_arr, int _arrcnt,
795 int _txoff, int _rxoff, enum ifnet_serialize _slz, boolean_t _serialized)
799 if (_slz == IFNET_SERIALIZE_ALL) {
803 for (_i = 0; _i < _arrcnt; ++_i)
804 ASSERT_SERIALIZED(_arr[_i]);
806 for (_i = 0; _i < _arrcnt; ++_i)
807 ASSERT_NOT_SERIALIZED(_arr[_i]);
812 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz);
814 ASSERT_SERIALIZED(_arr[_off]);
816 ASSERT_NOT_SERIALIZED(_arr[_off]);
819 #endif /* INVARIANTS */
821 #define REINPUT_KEEPRCVIF 0x0001 /* ether_reinput_oncpu() */
822 #define REINPUT_RUNBPF 0x0002 /* ether_reinput_oncpu() */
824 extern struct ifnethead ifnet;
825 extern struct ifnet **ifindex2ifnet;
826 extern int ifqmaxlen;
827 extern struct ifnet loif[];
833 void ether_ifattach(struct ifnet *, uint8_t *, struct lwkt_serialize *);
834 void ether_ifattach_bpf(struct ifnet *, uint8_t *, u_int, u_int,
835 struct lwkt_serialize *);
836 void ether_ifdetach(struct ifnet *);
837 void ether_demux(struct mbuf *);
838 void ether_demux_oncpu(struct ifnet *, struct mbuf *);
839 void ether_reinput_oncpu(struct ifnet *, struct mbuf *, int);
840 void ether_input_pkt(struct ifnet *, struct mbuf *, const struct pktinfo *);
841 int ether_output_frame(struct ifnet *, struct mbuf *);
842 int ether_ioctl(struct ifnet *, u_long, caddr_t);
843 boolean_t ether_tso_pullup(struct mbuf **, int *, struct ip **, int *,
844 struct tcphdr **, int *);
845 struct ifnet *ether_bridge_interface(struct ifnet *ifp);
846 uint32_t ether_crc32_le(const uint8_t *, size_t);
847 uint32_t ether_crc32_be(const uint8_t *, size_t);
849 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **);
850 int if_allmulti(struct ifnet *, int);
851 void if_attach(struct ifnet *, struct lwkt_serialize *);
852 int if_delmulti(struct ifnet *, struct sockaddr *);
853 void if_delallmulti(struct ifnet *ifp);
854 void if_purgeaddrs_nolink(struct ifnet *);
855 void if_detach(struct ifnet *);
856 void if_down(struct ifnet *);
857 void if_link_state_change(struct ifnet *);
858 void if_initname(struct ifnet *, const char *, int);
859 int if_getanyethermac(uint16_t *, int);
860 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3);
861 struct ifnet *if_alloc(uint8_t);
862 void if_free(struct ifnet *);
863 void if_route(struct ifnet *, int flag, int fam);
864 int if_setlladdr(struct ifnet *, const u_char *, int);
865 void if_unroute(struct ifnet *, int flag, int fam);
866 void if_up(struct ifnet *);
867 /*void ifinit(void);*/ /* declared in systm.h for main() */
868 int ifioctl(struct socket *, u_long, caddr_t, struct ucred *);
869 int ifpromisc(struct ifnet *, int);
870 struct ifnet *ifunit(const char *);
871 struct ifnet *if_withname(struct sockaddr *);
873 struct ifg_group *if_creategroup(const char *);
874 int if_addgroup(struct ifnet *, const char *);
875 int if_delgroup(struct ifnet *, const char *);
876 int if_getgroup(caddr_t, struct ifnet *);
877 int if_getgroupmembers(caddr_t);
879 struct ifaddr *ifa_ifwithaddr(struct sockaddr *);
880 struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *);
881 struct ifaddr *ifa_ifwithnet(struct sockaddr *);
882 struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *);
883 struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *);
885 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp);
886 typedef void if_com_free_t(void *com, u_char type);
887 void if_register_com_alloc(u_char, if_com_alloc_t *a, if_com_free_t *);
888 void if_deregister_com_alloc(u_char);
890 void *ifa_create(int, int);
891 void ifa_destroy(struct ifaddr *);
892 void ifa_iflink(struct ifaddr *, struct ifnet *, int);
893 void ifa_ifunlink(struct ifaddr *, struct ifnet *);
895 struct ifaddr *ifaddr_byindex(unsigned short);
897 struct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *);
898 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen);
899 void if_devstart(struct ifnet *ifp);
900 int if_ring_count2(int cnt, int cnt_max);
902 #define IF_LLSOCKADDR(ifp) \
903 ((struct sockaddr_dl *)(ifp)->if_lladdr->ifa_addr)
904 #define IF_LLADDR(ifp) LLADDR(IF_LLSOCKADDR(ifp))
906 #ifdef DEVICE_POLLING
907 typedef void poll_handler_t (struct ifnet *ifp, enum poll_cmd cmd, int count);
908 int ether_poll_register(struct ifnet *);
909 int ether_poll_deregister(struct ifnet *);
910 int ether_pollcpu_register(struct ifnet *, int);
911 #endif /* DEVICE_POLLING */
914 int ifpoll_register(struct ifnet *);
915 int ifpoll_deregister(struct ifnet *);
916 #endif /* IFPOLL_ENABLE */
920 #endif /* !_NET_IF_VAR_H_ */