2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1982, 1986, 1989, 1993
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31 * From: @(#)if.h 8.1 (Berkeley) 6/10/93
35 #ifndef _NET_IF_VAR_H_
36 #define _NET_IF_VAR_H_
39 * Structures defining a network interface, providing a packet
40 * transport mechanism (ala level 0 of the PUP protocols).
42 * Each interface accepts output datagrams of a specified maximum
43 * length, and provides higher level routines with input datagrams
44 * received from its medium.
46 * Output occurs when the routine if_output is called, with three parameters:
47 * (*ifp->if_output)(ifp, m, dst, rt)
48 * Here m is the mbuf chain to be sent and dst is the destination address.
49 * The output routine encapsulates the supplied datagram if necessary,
50 * and then transmits it on its medium.
52 * On input, each interface unwraps the data received by it, and either
53 * places it on the input queue of an internetwork datagram routine
54 * and posts the associated software interrupt, or passes the datagram to a raw
55 * packet input routine.
57 * Routines exist for locating interfaces by their addresses
58 * or for locating an interface on a certain network, as well as more general
59 * routing and gateway routines maintaining information used to locate
60 * interfaces. These routines live in the files if.c and route.c
63 struct rtentry; /* ifa_rtrequest */
64 struct rt_addrinfo; /* ifa_rtrequest */
69 struct route; /* if_output */
72 struct netmap_adapter;
75 #include <sys/mbuf.h> /* ifqueue only? */
76 #include <sys/buf_ring.h>
79 #include <sys/counter.h>
80 #include <sys/lock.h> /* XXX */
81 #include <sys/mutex.h> /* struct ifqueue */
82 #include <sys/rwlock.h> /* XXX */
83 #include <sys/sx.h> /* XXX */
84 #include <sys/_task.h> /* if_link_task */
86 #define IF_DUNIT_NONE -1
88 #include <net/altq/if_altq.h>
90 TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */
91 TAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */
92 TAILQ_HEAD(ifmultihead, ifmultiaddr);
93 TAILQ_HEAD(ifgrouphead, ifg_group);
96 VNET_DECLARE(struct pfil_head, link_pfil_hook); /* packet filter hooks */
97 #define V_link_pfil_hook VNET(link_pfil_hook)
99 #define HHOOK_IPSEC_INET 0
100 #define HHOOK_IPSEC_INET6 1
101 #define HHOOK_IPSEC_COUNT 2
102 VNET_DECLARE(struct hhook_head *, ipsec_hhh_in[HHOOK_IPSEC_COUNT]);
103 VNET_DECLARE(struct hhook_head *, ipsec_hhh_out[HHOOK_IPSEC_COUNT]);
104 #define V_ipsec_hhh_in VNET(ipsec_hhh_in)
105 #define V_ipsec_hhh_out VNET(ipsec_hhh_out)
109 IFCOUNTER_IPACKETS = 0,
113 IFCOUNTER_COLLISIONS,
121 IFCOUNTERS /* Array size. */
124 typedef struct ifnet * if_t;
126 typedef void (*if_start_fn_t)(if_t);
127 typedef int (*if_ioctl_fn_t)(if_t, u_long, caddr_t);
128 typedef void (*if_init_fn_t)(void *);
129 typedef void (*if_qflush_fn_t)(if_t);
130 typedef int (*if_transmit_fn_t)(if_t, struct mbuf *);
131 typedef uint64_t (*if_get_counter_t)(if_t, ift_counter);
133 struct ifnet_hw_tsomax {
134 u_int tsomaxbytes; /* TSO total burst length limit in bytes */
135 u_int tsomaxsegcount; /* TSO maximum segment count */
136 u_int tsomaxsegsize; /* TSO maximum segment size in bytes */
139 /* Interface encap request types */
141 IFENCAP_LL = 1 /* pre-calculate link-layer header */
145 * The structure below allows to request various pre-calculated L2/L3 headers
146 * for different media. Requests varies by type (rtype field).
148 * IFENCAP_LL type: pre-calculates link header based on address family
149 * and destination lladdr.
152 * buf: pointer to destination buffer
153 * bufsize: buffer size
154 * flags: IFENCAP_FLAG_BROADCAST if destination is broadcast
155 * family: address family defined by AF_ constant.
156 * lladdr: pointer to link-layer address
157 * lladdr_len: length of link-layer address
158 * hdata: pointer to L3 header (optional, used for ARP requests).
159 * Output data fields:
160 * buf: encap data is stored here
161 * bufsize: resulting encap length is stored here
162 * lladdr_off: offset of link-layer address from encap hdr start
163 * hdata: L3 header may be altered if necessary
166 struct if_encap_req {
167 u_char *buf; /* Destination buffer (w) */
168 size_t bufsize; /* size of provided buffer (r) */
169 ife_type rtype; /* request type (r) */
170 uint32_t flags; /* Request flags (r) */
171 int family; /* Address family AF_* (r) */
172 int lladdr_off; /* offset from header start (w) */
173 int lladdr_len; /* lladdr length (r) */
174 char *lladdr; /* link-level address pointer (r) */
175 char *hdata; /* Upper layer header data (rw) */
178 #define IFENCAP_FLAG_BROADCAST 0x02 /* Destination is broadcast */
181 * Network interface send tag support. The storage of "struct
182 * m_snd_tag" comes from the network driver and it is free to allocate
183 * as much additional space as it wants for its own use.
187 #define IF_SND_TAG_TYPE_RATE_LIMIT 0
188 #define IF_SND_TAG_TYPE_UNLIMITED 1
189 #define IF_SND_TAG_TYPE_MAX 2
191 struct if_snd_tag_alloc_header {
192 uint32_t type; /* send tag type, see IF_SND_TAG_XXX */
193 uint32_t flowid; /* mbuf hash value */
194 uint32_t flowtype; /* mbuf hash type */
197 struct if_snd_tag_alloc_rate_limit {
198 struct if_snd_tag_alloc_header hdr;
199 uint64_t max_rate; /* in bytes/s */
202 struct if_snd_tag_rate_limit_params {
203 uint64_t max_rate; /* in bytes/s */
204 uint32_t queue_level; /* 0 (empty) .. 65535 (full) */
205 #define IF_SND_QUEUE_LEVEL_MIN 0
206 #define IF_SND_QUEUE_LEVEL_MAX 65535
207 uint32_t reserved; /* padding */
210 union if_snd_tag_alloc_params {
211 struct if_snd_tag_alloc_header hdr;
212 struct if_snd_tag_alloc_rate_limit rate_limit;
213 struct if_snd_tag_alloc_rate_limit unlimited;
216 union if_snd_tag_modify_params {
217 struct if_snd_tag_rate_limit_params rate_limit;
218 struct if_snd_tag_rate_limit_params unlimited;
221 union if_snd_tag_query_params {
222 struct if_snd_tag_rate_limit_params rate_limit;
223 struct if_snd_tag_rate_limit_params unlimited;
226 typedef int (if_snd_tag_alloc_t)(struct ifnet *, union if_snd_tag_alloc_params *,
227 struct m_snd_tag **);
228 typedef int (if_snd_tag_modify_t)(struct m_snd_tag *, union if_snd_tag_modify_params *);
229 typedef int (if_snd_tag_query_t)(struct m_snd_tag *, union if_snd_tag_query_params *);
230 typedef void (if_snd_tag_free_t)(struct m_snd_tag *);
233 * Structure defining a network interface.
236 /* General book keeping of interface lists. */
237 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */
238 LIST_ENTRY(ifnet) if_clones; /* interfaces of a cloner */
239 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */
240 /* protected by if_addr_lock */
241 u_char if_alloctype; /* if_type at time of allocation */
243 /* Driver and protocol specific information that remains stable. */
244 void *if_softc; /* pointer to driver state */
245 void *if_llsoftc; /* link layer softc */
246 void *if_l2com; /* pointer to protocol bits */
247 const char *if_dname; /* driver name */
248 int if_dunit; /* unit or IF_DUNIT_NONE */
249 u_short if_index; /* numeric abbreviation for this if */
250 short if_index_reserved; /* spare space to grow if_index */
251 char if_xname[IFNAMSIZ]; /* external name (name + unit) */
252 char *if_description; /* interface description */
254 /* Variable fields that are touched by the stack and drivers. */
255 int if_flags; /* up/down, broadcast, etc. */
256 int if_drv_flags; /* driver-managed status flags */
257 int if_capabilities; /* interface features & capabilities */
258 int if_capenable; /* enabled features & capabilities */
259 void *if_linkmib; /* link-type-specific MIB data */
260 size_t if_linkmiblen; /* length of above data */
261 u_int if_refcount; /* reference count */
263 /* These fields are shared with struct if_data. */
264 uint8_t if_type; /* ethernet, tokenring, etc */
265 uint8_t if_addrlen; /* media address length */
266 uint8_t if_hdrlen; /* media header length */
267 uint8_t if_link_state; /* current link state */
268 uint32_t if_mtu; /* maximum transmission unit */
269 uint32_t if_metric; /* routing metric (external only) */
270 uint64_t if_baudrate; /* linespeed */
271 uint64_t if_hwassist; /* HW offload capabilities, see IFCAP */
272 time_t if_epoch; /* uptime at attach or stat reset */
273 struct timeval if_lastchange; /* time of last administrative change */
275 struct ifaltq if_snd; /* output queue (includes altq) */
276 struct task if_linktask; /* task for link change events */
278 /* Addresses of different protocol families assigned to this if. */
279 struct rwlock if_addr_lock; /* lock to protect address lists */
281 * if_addrhead is the list of all addresses associated to
283 * Some code in the kernel assumes that first element
284 * of the list has type AF_LINK, and contains sockaddr_dl
285 * addresses which store the link-level address and the name
287 * However, access to the AF_LINK address through this
288 * field is deprecated. Use if_addr or ifaddr_byindex() instead.
290 struct ifaddrhead if_addrhead; /* linked list of addresses per if */
291 struct ifmultihead if_multiaddrs; /* multicast addresses configured */
292 int if_amcount; /* number of all-multicast requests */
293 struct ifaddr *if_addr; /* pointer to link-level address */
294 void *if_hw_addr; /* hardware link-level address */
295 const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */
296 struct rwlock if_afdata_lock;
297 void *if_afdata[AF_MAX];
298 int if_afdata_initialized;
300 /* Additional features hung off the interface. */
301 u_int if_fib; /* interface FIB */
302 struct vnet *if_vnet; /* pointer to network stack instance */
303 struct vnet *if_home_vnet; /* where this ifnet originates from */
304 struct ifvlantrunk *if_vlantrunk; /* pointer to 802.1q data */
305 struct bpf_if *if_bpf; /* packet filter structure */
306 int if_pcount; /* number of promiscuous listeners */
307 void *if_bridge; /* bridge glue */
308 void *if_lagg; /* lagg glue */
309 void *if_pf_kif; /* pf glue */
310 struct carp_if *if_carp; /* carp interface structure */
311 struct label *if_label; /* interface MAC label */
312 struct netmap_adapter *if_netmap; /* netmap(4) softc */
314 /* Various procedures of the layer2 encapsulation and drivers. */
315 int (*if_output) /* output routine (enqueue) */
316 (struct ifnet *, struct mbuf *, const struct sockaddr *,
318 void (*if_input) /* input routine (from h/w driver) */
319 (struct ifnet *, struct mbuf *);
320 if_start_fn_t if_start; /* initiate output routine */
321 if_ioctl_fn_t if_ioctl; /* ioctl routine */
322 if_init_fn_t if_init; /* Init routine */
323 int (*if_resolvemulti) /* validate/resolve multicast */
324 (struct ifnet *, struct sockaddr **, struct sockaddr *);
325 if_qflush_fn_t if_qflush; /* flush any queue */
326 if_transmit_fn_t if_transmit; /* initiate output routine */
328 void (*if_reassign) /* reassign to vnet routine */
329 (struct ifnet *, struct vnet *, char *);
330 if_get_counter_t if_get_counter; /* get counter values */
331 int (*if_requestencap) /* make link header from request */
332 (struct ifnet *, struct if_encap_req *);
335 counter_u64_t if_counters[IFCOUNTERS];
337 /* Stuff that's only temporary and doesn't belong here. */
340 * Network adapter TSO limits:
341 * ===========================
343 * If the "if_hw_tsomax" field is zero the maximum segment
344 * length limit does not apply. If the "if_hw_tsomaxsegcount"
345 * or the "if_hw_tsomaxsegsize" field is zero the TSO segment
346 * count limit does not apply. If all three fields are zero,
347 * there is no TSO limit.
349 * NOTE: The TSO limits should reflect the values used in the
350 * BUSDMA tag a network adapter is using to load a mbuf chain
351 * for transmission. The TCP/IP network stack will subtract
352 * space for all linklevel and protocol level headers and
353 * ensure that the full mbuf chain passed to the network
354 * adapter fits within the given limits.
356 u_int if_hw_tsomax; /* TSO maximum size in bytes */
357 u_int if_hw_tsomaxsegcount; /* TSO maximum segment count */
358 u_int if_hw_tsomaxsegsize; /* TSO maximum segment size in bytes */
361 * Network adapter send tag support:
363 if_snd_tag_alloc_t *if_snd_tag_alloc;
364 if_snd_tag_modify_t *if_snd_tag_modify;
365 if_snd_tag_query_t *if_snd_tag_query;
366 if_snd_tag_free_t *if_snd_tag_free;
369 * Spare fields to be added before branching a stable branch, so
370 * that structure can be enhanced without changing the kernel
373 int if_ispare[4]; /* general use */
376 /* for compatibility with other BSDs */
377 #define if_name(ifp) ((ifp)->if_xname)
380 * Locks for address lists on the network interface.
382 #define IF_ADDR_LOCK_INIT(if) rw_init(&(if)->if_addr_lock, "if_addr_lock")
383 #define IF_ADDR_LOCK_DESTROY(if) rw_destroy(&(if)->if_addr_lock)
384 #define IF_ADDR_WLOCK(if) rw_wlock(&(if)->if_addr_lock)
385 #define IF_ADDR_WUNLOCK(if) rw_wunlock(&(if)->if_addr_lock)
386 #define IF_ADDR_RLOCK(if) rw_rlock(&(if)->if_addr_lock)
387 #define IF_ADDR_RUNLOCK(if) rw_runlock(&(if)->if_addr_lock)
388 #define IF_ADDR_LOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_LOCKED)
389 #define IF_ADDR_WLOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_WLOCKED)
392 * Function variations on locking macros intended to be used by loadable
393 * kernel modules in order to divorce them from the internals of address list
396 void if_addr_rlock(struct ifnet *ifp); /* if_addrhead */
397 void if_addr_runlock(struct ifnet *ifp); /* if_addrhead */
398 void if_maddr_rlock(if_t ifp); /* if_multiaddrs */
399 void if_maddr_runlock(if_t ifp); /* if_multiaddrs */
402 #ifdef _SYS_EVENTHANDLER_H_
403 /* interface link layer address change event */
404 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *);
405 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t);
406 /* interface address change event */
407 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *);
408 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t);
409 /* new interface arrival event */
410 typedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *);
411 EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t);
412 /* interface departure event */
413 typedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *);
414 EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t);
415 /* Interface link state change event */
416 typedef void (*ifnet_link_event_handler_t)(void *, struct ifnet *, int);
417 EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t);
418 /* Interface up/down event */
419 #define IFNET_EVENT_UP 0
420 #define IFNET_EVENT_DOWN 1
421 typedef void (*ifnet_event_fn)(void *, struct ifnet *ifp, int event);
422 EVENTHANDLER_DECLARE(ifnet_event, ifnet_event_fn);
423 #endif /* _SYS_EVENTHANDLER_H_ */
429 char ifg_group[IFNAMSIZ];
432 TAILQ_HEAD(, ifg_member) ifg_members;
433 TAILQ_ENTRY(ifg_group) ifg_next;
437 TAILQ_ENTRY(ifg_member) ifgm_next;
438 struct ifnet *ifgm_ifp;
442 struct ifg_group *ifgl_group;
443 TAILQ_ENTRY(ifg_list) ifgl_next;
446 #ifdef _SYS_EVENTHANDLER_H_
447 /* group attach event */
448 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *);
449 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t);
450 /* group detach event */
451 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *);
452 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t);
453 /* group change event */
454 typedef void (*group_change_event_handler_t)(void *, const char *);
455 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t);
456 #endif /* _SYS_EVENTHANDLER_H_ */
458 #define IF_AFDATA_LOCK_INIT(ifp) \
459 rw_init(&(ifp)->if_afdata_lock, "if_afdata")
461 #define IF_AFDATA_WLOCK(ifp) rw_wlock(&(ifp)->if_afdata_lock)
462 #define IF_AFDATA_RLOCK(ifp) rw_rlock(&(ifp)->if_afdata_lock)
463 #define IF_AFDATA_WUNLOCK(ifp) rw_wunlock(&(ifp)->if_afdata_lock)
464 #define IF_AFDATA_RUNLOCK(ifp) rw_runlock(&(ifp)->if_afdata_lock)
465 #define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp)
466 #define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp)
467 #define IF_AFDATA_TRYLOCK(ifp) rw_try_wlock(&(ifp)->if_afdata_lock)
468 #define IF_AFDATA_DESTROY(ifp) rw_destroy(&(ifp)->if_afdata_lock)
470 #define IF_AFDATA_LOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_LOCKED)
471 #define IF_AFDATA_RLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_RLOCKED)
472 #define IF_AFDATA_WLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_WLOCKED)
473 #define IF_AFDATA_UNLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_UNLOCKED)
476 * 72 was chosen below because it is the size of a TCP/IP
477 * header (40) + the minimum mss (32).
480 #define IF_MAXMTU 65535
482 #define TOEDEV(ifp) ((ifp)->if_llsoftc)
485 * The ifaddr structure contains information about one address
486 * of an interface. They are maintained by the different address families,
487 * are allocated and attached when an address is set, and are linked
488 * together so all addresses for an interface can be located.
490 * NOTE: a 'struct ifaddr' is always at the beginning of a larger
491 * chunk of malloc'ed memory, where we store the three addresses
492 * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here.
495 struct sockaddr *ifa_addr; /* address of interface */
496 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
497 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
498 struct sockaddr *ifa_netmask; /* used to determine subnet */
499 struct ifnet *ifa_ifp; /* back-pointer to interface */
500 struct carp_softc *ifa_carp; /* pointer to CARP data */
501 TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */
502 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
503 (int, struct rtentry *, struct rt_addrinfo *);
504 u_short ifa_flags; /* mostly rt_flags for cloning */
505 #define IFA_ROUTE RTF_UP /* route installed */
506 #define IFA_RTSELF RTF_HOST /* loopback route to self installed */
507 u_int ifa_refcnt; /* references to this structure */
509 counter_u64_t ifa_ipackets;
510 counter_u64_t ifa_opackets;
511 counter_u64_t ifa_ibytes;
512 counter_u64_t ifa_obytes;
515 struct ifaddr * ifa_alloc(size_t size, int flags);
516 void ifa_free(struct ifaddr *ifa);
517 void ifa_ref(struct ifaddr *ifa);
520 * Multicast address structure. This is analogous to the ifaddr
521 * structure except that it keeps track of multicast addresses.
524 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */
525 struct sockaddr *ifma_addr; /* address this membership is for */
526 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */
527 struct ifnet *ifma_ifp; /* back-pointer to interface */
528 u_int ifma_refcount; /* reference count */
529 void *ifma_protospec; /* protocol-specific state, if any */
530 struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */
533 extern struct rwlock ifnet_rwlock;
534 extern struct sx ifnet_sxlock;
536 #define IFNET_WLOCK() do { \
537 sx_xlock(&ifnet_sxlock); \
538 rw_wlock(&ifnet_rwlock); \
541 #define IFNET_WUNLOCK() do { \
542 rw_wunlock(&ifnet_rwlock); \
543 sx_xunlock(&ifnet_sxlock); \
547 * To assert the ifnet lock, you must know not only whether it's for read or
548 * write, but also whether it was acquired with sleep support or not.
550 #define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED)
551 #define IFNET_RLOCK_NOSLEEP_ASSERT() rw_assert(&ifnet_rwlock, RA_RLOCKED)
552 #define IFNET_WLOCK_ASSERT() do { \
553 sx_assert(&ifnet_sxlock, SA_XLOCKED); \
554 rw_assert(&ifnet_rwlock, RA_WLOCKED); \
557 #define IFNET_RLOCK() sx_slock(&ifnet_sxlock)
558 #define IFNET_RLOCK_NOSLEEP() rw_rlock(&ifnet_rwlock)
559 #define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock)
560 #define IFNET_RUNLOCK_NOSLEEP() rw_runlock(&ifnet_rwlock)
563 * Look up an ifnet given its index; the _ref variant also acquires a
564 * reference that must be freed using if_rele(). It is almost always a bug
565 * to call ifnet_byindex() instead of ifnet_byindex_ref().
567 struct ifnet *ifnet_byindex(u_short idx);
568 struct ifnet *ifnet_byindex_locked(u_short idx);
569 struct ifnet *ifnet_byindex_ref(u_short idx);
572 * Given the index, ifaddr_byindex() returns the one and only
573 * link-level ifaddr for the interface. You are not supposed to use
574 * it to traverse the list of addresses associated to the interface.
576 struct ifaddr *ifaddr_byindex(u_short idx);
578 VNET_DECLARE(struct ifnethead, ifnet);
579 VNET_DECLARE(struct ifgrouphead, ifg_head);
580 VNET_DECLARE(int, if_index);
581 VNET_DECLARE(struct ifnet *, loif); /* first loopback interface */
583 #define V_ifnet VNET(ifnet)
584 #define V_ifg_head VNET(ifg_head)
585 #define V_if_index VNET(if_index)
586 #define V_loif VNET(loif)
588 int if_addgroup(struct ifnet *, const char *);
589 int if_delgroup(struct ifnet *, const char *);
590 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **);
591 int if_allmulti(struct ifnet *, int);
592 struct ifnet* if_alloc(u_char);
593 void if_attach(struct ifnet *);
594 void if_dead(struct ifnet *);
595 int if_delmulti(struct ifnet *, struct sockaddr *);
596 void if_delmulti_ifma(struct ifmultiaddr *);
597 void if_detach(struct ifnet *);
598 void if_purgeaddrs(struct ifnet *);
599 void if_delallmulti(struct ifnet *);
600 void if_down(struct ifnet *);
602 if_findmulti(struct ifnet *, const struct sockaddr *);
603 void if_free(struct ifnet *);
604 void if_initname(struct ifnet *, const char *, int);
605 void if_link_state_change(struct ifnet *, int);
606 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3);
607 void if_ref(struct ifnet *);
608 void if_rele(struct ifnet *);
609 int if_setlladdr(struct ifnet *, const u_char *, int);
610 void if_up(struct ifnet *);
611 int ifioctl(struct socket *, u_long, caddr_t, struct thread *);
612 int ifpromisc(struct ifnet *, int);
613 struct ifnet *ifunit(const char *);
614 struct ifnet *ifunit_ref(const char *);
616 int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *);
617 int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *);
618 int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *);
620 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *);
621 int ifa_ifwithaddr_check(const struct sockaddr *);
622 struct ifaddr *ifa_ifwithbroadaddr(const struct sockaddr *, int);
623 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *, int);
624 struct ifaddr *ifa_ifwithnet(const struct sockaddr *, int, int);
625 struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, struct sockaddr *,
627 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *);
628 int ifa_preferred(struct ifaddr *, struct ifaddr *);
630 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen);
632 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp);
633 typedef void if_com_free_t(void *com, u_char type);
634 void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f);
635 void if_deregister_com_alloc(u_char type);
636 void if_data_copy(struct ifnet *, struct if_data *);
637 uint64_t if_get_counter_default(struct ifnet *, ift_counter);
638 void if_inc_counter(struct ifnet *, ift_counter, int64_t);
640 #define IF_LLADDR(ifp) \
641 LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr))
643 uint64_t if_setbaudrate(if_t ifp, uint64_t baudrate);
644 uint64_t if_getbaudrate(if_t ifp);
645 int if_setcapabilities(if_t ifp, int capabilities);
646 int if_setcapabilitiesbit(if_t ifp, int setbit, int clearbit);
647 int if_getcapabilities(if_t ifp);
648 int if_togglecapenable(if_t ifp, int togglecap);
649 int if_setcapenable(if_t ifp, int capenable);
650 int if_setcapenablebit(if_t ifp, int setcap, int clearcap);
651 int if_getcapenable(if_t ifp);
652 const char *if_getdname(if_t ifp);
653 int if_setdev(if_t ifp, void *dev);
654 int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags);
655 int if_getdrvflags(if_t ifp);
656 int if_setdrvflags(if_t ifp, int flags);
657 int if_clearhwassist(if_t ifp);
658 int if_sethwassistbits(if_t ifp, int toset, int toclear);
659 int if_sethwassist(if_t ifp, int hwassist_bit);
660 int if_gethwassist(if_t ifp);
661 int if_setsoftc(if_t ifp, void *softc);
662 void *if_getsoftc(if_t ifp);
663 int if_setflags(if_t ifp, int flags);
664 int if_gethwaddr(if_t ifp, struct ifreq *);
665 int if_setmtu(if_t ifp, int mtu);
666 int if_getmtu(if_t ifp);
667 int if_getmtu_family(if_t ifp, int family);
668 int if_setflagbits(if_t ifp, int set, int clear);
669 int if_getflags(if_t ifp);
670 int if_sendq_empty(if_t ifp);
671 int if_setsendqready(if_t ifp);
672 int if_setsendqlen(if_t ifp, int tx_desc_count);
673 int if_sethwtsomax(if_t ifp, u_int if_hw_tsomax);
674 int if_sethwtsomaxsegcount(if_t ifp, u_int if_hw_tsomaxsegcount);
675 int if_sethwtsomaxsegsize(if_t ifp, u_int if_hw_tsomaxsegsize);
676 u_int if_gethwtsomax(if_t ifp);
677 u_int if_gethwtsomaxsegcount(if_t ifp);
678 u_int if_gethwtsomaxsegsize(if_t ifp);
679 int if_input(if_t ifp, struct mbuf* sendmp);
680 int if_sendq_prepend(if_t ifp, struct mbuf *m);
681 struct mbuf *if_dequeue(if_t ifp);
682 int if_setifheaderlen(if_t ifp, int len);
683 void if_setrcvif(struct mbuf *m, if_t ifp);
684 void if_setvtag(struct mbuf *m, u_int16_t tag);
685 u_int16_t if_getvtag(struct mbuf *m);
686 int if_vlantrunkinuse(if_t ifp);
687 caddr_t if_getlladdr(if_t ifp);
688 void *if_gethandle(u_char);
689 void if_bpfmtap(if_t ifp, struct mbuf *m);
690 void if_etherbpfmtap(if_t ifp, struct mbuf *m);
691 void if_vlancap(if_t ifp);
693 int if_setupmultiaddr(if_t ifp, void *mta, int *cnt, int max);
694 int if_multiaddr_array(if_t ifp, void *mta, int *cnt, int max);
695 int if_multiaddr_count(if_t ifp, int max);
697 int if_multi_apply(struct ifnet *ifp, int (*filter)(void *, struct ifmultiaddr *, int), void *arg);
698 int if_getamcount(if_t ifp);
699 struct ifaddr * if_getifaddr(if_t ifp);
702 void if_setinitfn(if_t ifp, void (*)(void *));
703 void if_setioctlfn(if_t ifp, int (*)(if_t, u_long, caddr_t));
704 void if_setstartfn(if_t ifp, void (*)(if_t));
705 void if_settransmitfn(if_t ifp, if_transmit_fn_t);
706 void if_setqflushfn(if_t ifp, if_qflush_fn_t);
707 void if_setgetcounterfn(if_t ifp, if_get_counter_t);
709 /* Revisit the below. These are inline functions originally */
710 int drbr_inuse_drv(if_t ifp, struct buf_ring *br);
711 struct mbuf* drbr_dequeue_drv(if_t ifp, struct buf_ring *br);
712 int drbr_needs_enqueue_drv(if_t ifp, struct buf_ring *br);
713 int drbr_enqueue_drv(if_t ifp, struct buf_ring *br, struct mbuf *m);
716 void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *);
717 int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *);
719 #ifdef DEVICE_POLLING
720 enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS };
722 typedef int poll_handler_t(if_t ifp, enum poll_cmd cmd, int count);
723 int ether_poll_register(poll_handler_t *h, if_t ifp);
724 int ether_poll_deregister(if_t ifp);
725 #endif /* DEVICE_POLLING */
729 #include <net/ifq.h> /* XXXAO: temporary unconditional include */
731 #endif /* !_NET_IF_VAR_H_ */