1 /* $NetBSD: if.h,v 1.222 2016/07/22 07:09:40 knakahara Exp $ */
2
3 /*-
4 * Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by William Studenmund and Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (c) 1982, 1986, 1989, 1993
34 * The Regents of the University of California. All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 * @(#)if.h 8.3 (Berkeley) 2/9/95
61 */
62
63 #ifndef _NET_IF_H_
64 #define _NET_IF_H_
65
66 #if !defined(_KERNEL) && !defined(_STANDALONE)
67 #include <stdbool.h>
68 #endif
69
70 #include <sys/featuretest.h>
71
72 /*
73 * Length of interface external name, including terminating '\0'.
74 * Note: this is the same size as a generic device's external name.
75 */
76 #define IF_NAMESIZE 16
77
78 #if defined(_NETBSD_SOURCE)
79
80 #include <sys/socket.h>
81 #include <sys/queue.h>
82 #include <sys/mutex.h>
83
84 #include <net/dlt.h>
85 #include <net/pfil.h>
86 #ifdef _KERNEL
87 #include <net/pktqueue.h>
88 #include <sys/pslist.h>
89 #include <sys/pserialize.h>
90 #include <sys/psref.h>
91 #endif
92
93 /*
94 * Always include ALTQ glue here -- we use the ALTQ interface queue
95 * structure even when ALTQ is not configured into the kernel so that
96 * the size of struct ifnet does not changed based on the option. The
97 * ALTQ queue structure is API-compatible with the legacy ifqueue.
98 */
99 #include <altq/if_altq.h>
100
101 /*
102 * Structures defining a network interface, providing a packet
103 * transport mechanism (ala level 0 of the PUP protocols).
104 *
105 * Each interface accepts output datagrams of a specified maximum
106 * length, and provides higher level routines with input datagrams
107 * received from its medium.
108 *
109 * Output occurs when the routine if_output is called, with four parameters:
110 * (*ifp->if_output)(ifp, m, dst, rt)
111 * Here m is the mbuf chain to be sent and dst is the destination address.
112 * The output routine encapsulates the supplied datagram if necessary,
113 * and then transmits it on its medium.
114 *
115 * On input, each interface unwraps the data received by it, and either
116 * places it on the input queue of a internetwork datagram routine
117 * and posts the associated software interrupt, or passes the datagram to a raw
118 * packet input routine.
119 *
120 * Routines exist for locating interfaces by their addresses
121 * or for locating a interface on a certain network, as well as more general
122 * routing and gateway routines maintaining information used to locate
123 * interfaces. These routines live in the files if.c and route.c
124 */
125 #include <sys/time.h>
126
127 #if defined(_KERNEL_OPT)
128 #include "opt_compat_netbsd.h"
129 #include "opt_gateway.h"
130 #endif
131
132 struct mbuf;
133 struct proc;
134 struct rtentry;
135 struct socket;
136 struct ether_header;
137 struct ifaddr;
138 struct ifnet;
139 struct rt_addrinfo;
140
141 #define IFNAMSIZ IF_NAMESIZE
142
143 /*
144 * Structure describing a `cloning' interface.
145 */
146 struct if_clone {
147 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */
148 const char *ifc_name; /* name of device, e.g. `gif' */
149 size_t ifc_namelen; /* length of name */
150
151 int (*ifc_create)(struct if_clone *, int);
152 int (*ifc_destroy)(struct ifnet *);
153 };
154
155 #define IF_CLONE_INITIALIZER(name, create, destroy) \
156 { { NULL, NULL }, name, sizeof(name) - 1, create, destroy }
157
158 /*
159 * Structure used to query names of interface cloners.
160 */
161 struct if_clonereq {
162 int ifcr_total; /* total cloners (out) */
163 int ifcr_count; /* room for this many in user buffer */
164 char *ifcr_buffer; /* buffer for cloner names */
165 };
166
167 /*
168 * Structure defining statistics and other data kept regarding a network
169 * interface.
170 */
171 struct if_data {
172 /* generic interface information */
173 u_char ifi_type; /* ethernet, tokenring, etc. */
174 u_char ifi_addrlen; /* media address length */
175 u_char ifi_hdrlen; /* media header length */
176 int ifi_link_state; /* current link state */
177 uint64_t ifi_mtu; /* maximum transmission unit */
178 uint64_t ifi_metric; /* routing metric (external only) */
179 uint64_t ifi_baudrate; /* linespeed */
180 /* volatile statistics */
181 uint64_t ifi_ipackets; /* packets received on interface */
182 uint64_t ifi_ierrors; /* input errors on interface */
183 uint64_t ifi_opackets; /* packets sent on interface */
184 uint64_t ifi_oerrors; /* output errors on interface */
185 uint64_t ifi_collisions; /* collisions on csma interfaces */
186 uint64_t ifi_ibytes; /* total number of octets received */
187 uint64_t ifi_obytes; /* total number of octets sent */
188 uint64_t ifi_imcasts; /* packets received via multicast */
189 uint64_t ifi_omcasts; /* packets sent via multicast */
190 uint64_t ifi_iqdrops; /* dropped on input, this interface */
191 uint64_t ifi_noproto; /* destined for unsupported protocol */
192 struct timespec ifi_lastchange;/* last operational state change */
193 };
194
195 /*
196 * Values for if_link_state.
197 */
198 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */
199 #define LINK_STATE_DOWN 1 /* link is down */
200 #define LINK_STATE_UP 2 /* link is up */
201
202 /*
203 * Structure defining a queue for a network interface.
204 */
205 struct ifqueue {
206 struct mbuf *ifq_head;
207 struct mbuf *ifq_tail;
208 int ifq_len;
209 int ifq_maxlen;
210 int ifq_drops;
211 kmutex_t *ifq_lock;
212 };
213
214 #ifdef _KERNEL
215 #include <sys/percpu.h>
216 #include <sys/callout.h>
217 #include <sys/rwlock.h>
218
219 #endif /* _KERNEL */
220
221 /*
222 * Structure defining a queue for a network interface.
223 *
224 * (Would like to call this struct ``if'', but C isn't PL/1.)
225 */
226 TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */
227
228 struct bridge_softc;
229 struct bridge_iflist;
230 struct callout;
231 struct krwlock;
232 struct if_percpuq;
233
234 typedef unsigned short if_index_t;
235
236 typedef struct ifnet {
237 void *if_softc; /* lower-level data for this if */
238 /* DEPRECATED. Keep it to avoid breaking kvm(3) users */
239 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */
240 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */
241 char if_xname[IFNAMSIZ]; /* external name (name + unit) */
242 int if_pcount; /* number of promiscuous listeners */
243 struct bpf_if *if_bpf; /* packet filter structure */
244 if_index_t if_index; /* numeric abbreviation for this if */
245 short if_timer; /* time 'til if_slowtimo called */
246 short if_flags; /* up/down, broadcast, etc. */
247 short if_extflags; /* if_output MP-safe, etc. */
248 struct if_data if_data; /* statistics and other data about if */
249 /*
250 * Procedure handles. If you add more of these, don't forget the
251 * corresponding NULL stub in if.c.
252 */
253 int (*if_output) /* output routine (enqueue) */
254 (struct ifnet *, struct mbuf *, const struct sockaddr *,
255 const struct rtentry *);
256 void (*_if_input) /* input routine (from h/w driver) */
257 (struct ifnet *, struct mbuf *);
258 void (*if_start) /* initiate output routine */
259 (struct ifnet *);
260 int (*if_transmit) /* output routine, must be MP-safe */
261 (struct ifnet *, struct mbuf *);
262 int (*if_ioctl) /* ioctl routine */
263 (struct ifnet *, u_long, void *);
264 int (*if_init) /* init routine */
265 (struct ifnet *);
266 void (*if_stop) /* stop routine */
267 (struct ifnet *, int);
268 void (*if_slowtimo) /* timer routine */
269 (struct ifnet *);
270 #define if_watchdog if_slowtimo
271 void (*if_drain) /* routine to release resources */
272 (struct ifnet *);
273 struct ifaltq if_snd; /* output queue (includes altq) */
274 struct ifaddr *if_dl; /* identity of this interface. */
275 const struct sockaddr_dl *if_sadl; /* pointer to sockaddr_dl
276 * of if_dl
277 */
278 /* if_hwdl: h/w identity
279 *
280 * May be NULL. If not NULL, it is the address assigned
281 * to the interface by the manufacturer, so it very likely
282 * to be unique. It MUST NOT be deleted. It is highly
283 * suitable for deriving the EUI64 for the interface.
284 */
285 struct ifaddr *if_hwdl;
286 const uint8_t *if_broadcastaddr;/* linklevel broadcast bytestring */
287 struct bridge_softc *if_bridge; /* bridge glue */
288 struct bridge_iflist *if_bridgeif; /* shortcut to interface list entry */
289 int if_dlt; /* data link type (<net/dlt.h>) */
290 pfil_head_t * if_pfil; /* filtering point */
291 uint64_t if_capabilities; /* interface capabilities */
292 uint64_t if_capenable; /* capabilities enabled */
293 union {
294 void * carp_s; /* carp structure (used by !carp ifs) */
295 struct ifnet *carp_d;/* ptr to carpdev (used by carp ifs) */
296 } if_carp_ptr;
297 #define if_carp if_carp_ptr.carp_s
298 #define if_carpdev if_carp_ptr.carp_d
299 /*
300 * These are pre-computed based on an interfaces enabled
301 * capabilities, for speed elsewhere.
302 */
303 int if_csum_flags_tx; /* M_CSUM_* flags for Tx */
304 int if_csum_flags_rx; /* M_CSUM_* flags for Rx */
305
306 void *if_afdata[AF_MAX];
307 struct mowner *if_mowner; /* who owns mbufs for this interface */
308
309 void *if_agrprivate; /* used only when #if NAGR > 0 */
310
311 /*
312 * pf specific data, used only when #if NPF > 0.
313 */
314 void *if_pf_kif; /* pf interface abstraction */
315 void *if_pf_groups; /* pf interface groups */
316 /*
317 * During an ifnet's lifetime, it has only one if_index, but
318 * and if_index is not sufficient to identify an ifnet
319 * because during the lifetime of the system, many ifnets may occupy a
320 * given if_index. Let us tell different ifnets at the same
321 * if_index apart by their if_index_gen, a unique number that each ifnet
322 * is assigned when it if_attach()s. Now, the kernel can use the
323 * pair (if_index, if_index_gen) as a weak reference to an ifnet.
324 */
325 uint64_t if_index_gen; /* generation number for the ifnet
326 * at if_index: if two ifnets' index
327 * and generation number are both the
328 * same, they are the same ifnet.
329 */
330 struct sysctllog *if_sysctl_log;
331 int (*if_initaddr)(struct ifnet *, struct ifaddr *, bool);
332 int (*if_mcastop)(struct ifnet *, const unsigned long,
333 const struct sockaddr *);
334 int (*if_setflags)(struct ifnet *, const short);
335 kmutex_t *if_ioctl_lock;
336 #ifdef _KERNEL /* XXX kvm(3) */
337 struct callout *if_slowtimo_ch;
338 struct krwlock *if_afdata_lock;
339 struct if_percpuq *if_percpuq; /* We should remove it in the future */
340 void *if_link_si; /* softint to handle link state changes */
341 uint16_t if_link_queue; /* masked link state change queue */
342 struct pslist_entry if_pslist_entry;
343 struct psref_target if_psref;
344 struct pslist_head if_addr_pslist;
345 #endif
346 } ifnet_t;
347
348 #define if_mtu if_data.ifi_mtu
349 #define if_type if_data.ifi_type
350 #define if_addrlen if_data.ifi_addrlen
351 #define if_hdrlen if_data.ifi_hdrlen
352 #define if_metric if_data.ifi_metric
353 #define if_link_state if_data.ifi_link_state
354 #define if_baudrate if_data.ifi_baudrate
355 #define if_ipackets if_data.ifi_ipackets
356 #define if_ierrors if_data.ifi_ierrors
357 #define if_opackets if_data.ifi_opackets
358 #define if_oerrors if_data.ifi_oerrors
359 #define if_collisions if_data.ifi_collisions
360 #define if_ibytes if_data.ifi_ibytes
361 #define if_obytes if_data.ifi_obytes
362 #define if_imcasts if_data.ifi_imcasts
363 #define if_omcasts if_data.ifi_omcasts
364 #define if_iqdrops if_data.ifi_iqdrops
365 #define if_noproto if_data.ifi_noproto
366 #define if_lastchange if_data.ifi_lastchange
367
368 #define IFF_UP 0x0001 /* interface is up */
369 #define IFF_BROADCAST 0x0002 /* broadcast address valid */
370 #define IFF_DEBUG 0x0004 /* turn on debugging */
371 #define IFF_LOOPBACK 0x0008 /* is a loopback net */
372 #define IFF_POINTOPOINT 0x0010 /* interface is point-to-point link */
373 #define IFF_NOTRAILERS 0x0020 /* avoid use of trailers */
374 #define IFF_RUNNING 0x0040 /* resources allocated */
375 #define IFF_NOARP 0x0080 /* no address resolution protocol */
376 #define IFF_PROMISC 0x0100 /* receive all packets */
377 #define IFF_ALLMULTI 0x0200 /* receive all multicast packets */
378 #define IFF_OACTIVE 0x0400 /* transmission in progress */
379 #define IFF_SIMPLEX 0x0800 /* can't hear own transmissions */
380 #define IFF_LINK0 0x1000 /* per link layer defined bit */
381 #define IFF_LINK1 0x2000 /* per link layer defined bit */
382 #define IFF_LINK2 0x4000 /* per link layer defined bit */
383 #define IFF_MULTICAST 0x8000 /* supports multicast */
384
385 #define IFEF_OUTPUT_MPSAFE __BIT(0) /* if_output() can run parallel */
386 #define IFEF_START_MPSAFE __BIT(1) /* if_start() can run parallel */
387 #define IFEF_NO_LINK_STATE_CHANGE __BIT(2) /* doesn't use link state interrupts */
388
389 #ifdef _KERNEL
390 static inline bool
if_output_is_mpsafe(struct ifnet * ifp)391 if_output_is_mpsafe(struct ifnet *ifp)
392 {
393
394 return ((ifp->if_extflags & IFEF_OUTPUT_MPSAFE) != 0);
395 }
396
397 static inline int
if_output_lock(struct ifnet * cifp,struct ifnet * ifp,struct mbuf * m,const struct sockaddr * dst,const struct rtentry * rt)398 if_output_lock(struct ifnet *cifp, struct ifnet *ifp, struct mbuf *m,
399 const struct sockaddr *dst, const struct rtentry *rt)
400 {
401
402 if (if_output_is_mpsafe(cifp)) {
403 return (*cifp->if_output)(ifp, m, dst, rt);
404 } else {
405 int ret;
406
407 KERNEL_LOCK(1, NULL);
408 ret = (*cifp->if_output)(ifp, m, dst, rt);
409 KERNEL_UNLOCK_ONE(NULL);
410 return ret;
411 }
412 }
413
414 static inline bool
if_start_is_mpsafe(struct ifnet * ifp)415 if_start_is_mpsafe(struct ifnet *ifp)
416 {
417
418 return ((ifp->if_extflags & IFEF_START_MPSAFE) != 0);
419 }
420
421 static inline void
if_start_lock(struct ifnet * ifp)422 if_start_lock(struct ifnet *ifp)
423 {
424
425 if (if_start_is_mpsafe(ifp)) {
426 (*ifp->if_start)(ifp);
427 } else {
428 KERNEL_LOCK(1, NULL);
429 (*ifp->if_start)(ifp);
430 KERNEL_UNLOCK_ONE(NULL);
431 }
432 }
433
434 static inline bool
if_is_link_state_changeable(struct ifnet * ifp)435 if_is_link_state_changeable(struct ifnet *ifp)
436 {
437
438 return ((ifp->if_extflags & IFEF_NO_LINK_STATE_CHANGE) == 0);
439 }
440 #endif /* _KERNEL */
441
442 #define IFFBITS \
443 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS" \
444 "\7RUNNING\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX" \
445 "\15LINK0\16LINK1\17LINK2\20MULTICAST"
446
447 /* flags set internally only: */
448 #define IFF_CANTCHANGE \
449 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
450 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC)
451
452 /*
453 * Some convenience macros used for setting ifi_baudrate.
454 */
455 #define IF_Kbps(x) ((x) * 1000ULL) /* kilobits/sec. */
456 #define IF_Mbps(x) (IF_Kbps((x) * 1000ULL)) /* megabits/sec. */
457 #define IF_Gbps(x) (IF_Mbps((x) * 1000ULL)) /* gigabits/sec. */
458
459 /* Capabilities that interfaces can advertise. */
460 /* 0x01 .. 0x40 were previously used */
461 #define IFCAP_TSOv4 0x00080 /* can do TCPv4 segmentation offload */
462 #define IFCAP_CSUM_IPv4_Rx 0x00100 /* can do IPv4 header checksums (Rx) */
463 #define IFCAP_CSUM_IPv4_Tx 0x00200 /* can do IPv4 header checksums (Tx) */
464 #define IFCAP_CSUM_TCPv4_Rx 0x00400 /* can do IPv4/TCP checksums (Rx) */
465 #define IFCAP_CSUM_TCPv4_Tx 0x00800 /* can do IPv4/TCP checksums (Tx) */
466 #define IFCAP_CSUM_UDPv4_Rx 0x01000 /* can do IPv4/UDP checksums (Rx) */
467 #define IFCAP_CSUM_UDPv4_Tx 0x02000 /* can do IPv4/UDP checksums (Tx) */
468 #define IFCAP_CSUM_TCPv6_Rx 0x04000 /* can do IPv6/TCP checksums (Rx) */
469 #define IFCAP_CSUM_TCPv6_Tx 0x08000 /* can do IPv6/TCP checksums (Tx) */
470 #define IFCAP_CSUM_UDPv6_Rx 0x10000 /* can do IPv6/UDP checksums (Rx) */
471 #define IFCAP_CSUM_UDPv6_Tx 0x20000 /* can do IPv6/UDP checksums (Tx) */
472 #define IFCAP_TSOv6 0x40000 /* can do TCPv6 segmentation offload */
473 #define IFCAP_LRO 0x80000 /* can do Large Receive Offload */
474 #define IFCAP_MASK 0xfff80 /* currently valid capabilities */
475
476 #define IFCAPBITS \
477 "\020" \
478 "\10TSO4" \
479 "\11IP4CSUM_Rx" \
480 "\12IP4CSUM_Tx" \
481 "\13TCP4CSUM_Rx" \
482 "\14TCP4CSUM_Tx" \
483 "\15UDP4CSUM_Rx" \
484 "\16UDP4CSUM_Tx" \
485 "\17TCP6CSUM_Rx" \
486 "\20TCP6CSUM_Tx" \
487 "\21UDP6CSUM_Rx" \
488 "\22UDP6CSUM_Tx" \
489 "\23TSO6" \
490 "\24LRO" \
491
492 #define IF_AFDATA_LOCK_INIT(ifp) \
493 do {(ifp)->if_afdata_lock = rw_obj_alloc();} while (0)
494
495 #define IF_AFDATA_LOCK_DESTROY(ifp) rw_obj_free((ifp)->if_afdata_lock)
496
497 #define IF_AFDATA_WLOCK(ifp) rw_enter((ifp)->if_afdata_lock, RW_WRITER)
498 #define IF_AFDATA_RLOCK(ifp) rw_enter((ifp)->if_afdata_lock, RW_READER)
499 #define IF_AFDATA_WUNLOCK(ifp) rw_exit((ifp)->if_afdata_lock)
500 #define IF_AFDATA_RUNLOCK(ifp) rw_exit((ifp)->if_afdata_lock)
501 #define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp)
502 #define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp)
503 #define IF_AFDATA_TRYLOCK(ifp) rw_tryenter((ifp)->if_afdata_lock, RW_WRITER)
504
505 #define IF_AFDATA_LOCK_ASSERT(ifp) \
506 KASSERT(rw_lock_held((ifp)->if_afdata_lock))
507 #define IF_AFDATA_RLOCK_ASSERT(ifp) \
508 KASSERT(rw_read_held((ifp)->if_afdata_lock))
509 #define IF_AFDATA_WLOCK_ASSERT(ifp) \
510 KASSERT(rw_write_held((ifp)->if_afdata_lock))
511 #define IF_AFDATA_UNLOCK_ASSERT(ifp) \
512 KASSERT(!rw_lock_held((ifp)->if_afdata_lock))
513
514 /*
515 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1)
516 * input routines have queues of messages stored on ifqueue structures
517 * (defined above). Entries are added to and deleted from these structures
518 * by these macros, which should be called with ipl raised to splnet().
519 */
520 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
521 #define IF_DROP(ifq) ((ifq)->ifq_drops++)
522 #define IF_ENQUEUE(ifq, m) do { \
523 (m)->m_nextpkt = 0; \
524 if ((ifq)->ifq_tail == 0) \
525 (ifq)->ifq_head = m; \
526 else \
527 (ifq)->ifq_tail->m_nextpkt = m; \
528 (ifq)->ifq_tail = m; \
529 (ifq)->ifq_len++; \
530 } while (/*CONSTCOND*/0)
531 #define IF_PREPEND(ifq, m) do { \
532 (m)->m_nextpkt = (ifq)->ifq_head; \
533 if ((ifq)->ifq_tail == 0) \
534 (ifq)->ifq_tail = (m); \
535 (ifq)->ifq_head = (m); \
536 (ifq)->ifq_len++; \
537 } while (/*CONSTCOND*/0)
538 #define IF_DEQUEUE(ifq, m) do { \
539 (m) = (ifq)->ifq_head; \
540 if (m) { \
541 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \
542 (ifq)->ifq_tail = 0; \
543 (m)->m_nextpkt = 0; \
544 (ifq)->ifq_len--; \
545 } \
546 } while (/*CONSTCOND*/0)
547 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head)
548 #define IF_PURGE(ifq) \
549 do { \
550 struct mbuf *__m0; \
551 \
552 for (;;) { \
553 IF_DEQUEUE((ifq), __m0); \
554 if (__m0 == NULL) \
555 break; \
556 else \
557 m_freem(__m0); \
558 } \
559 } while (/*CONSTCOND*/ 0)
560 #define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0)
561
562 #ifndef IFQ_MAXLEN
563 #define IFQ_MAXLEN 256
564 #endif
565 #define IFNET_SLOWHZ 1 /* granularity is 1 second */
566
567 /*
568 * Structure defining statistics and other data kept regarding an address
569 * on a network interface.
570 */
571 struct ifaddr_data {
572 int64_t ifad_inbytes;
573 int64_t ifad_outbytes;
574 };
575
576 /*
577 * The ifaddr structure contains information about one address
578 * of an interface. They are maintained by the different address families,
579 * are allocated and attached when an address is set, and are linked
580 * together so all addresses for an interface can be located.
581 */
582 struct ifaddr {
583 struct sockaddr *ifa_addr; /* address of interface */
584 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
585 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
586 struct sockaddr *ifa_netmask; /* used to determine subnet */
587 struct ifnet *ifa_ifp; /* back-pointer to interface */
588 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */
589 struct ifaddr_data ifa_data; /* statistics on the address */
590 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
591 (int, struct rtentry *, const struct rt_addrinfo *);
592 u_int ifa_flags; /* mostly rt_flags for cloning */
593 int ifa_refcnt; /* count of references */
594 int ifa_metric; /* cost of going out this interface */
595 struct ifaddr *(*ifa_getifa)(struct ifaddr *,
596 const struct sockaddr *);
597 uint32_t *ifa_seqno;
598 int16_t ifa_preference; /* preference level for this address */
599 /* XXX adding variables here breaks kvm(3) users of struct *_ifaddr */
600 };
601 #define IFA_ROUTE RTF_UP /* (0x01) route installed */
602
603 /*
604 * Message format for use in obtaining information about interfaces from
605 * sysctl and the routing socket. We need to force 64-bit alignment if we
606 * aren't using compatiblity definitons.
607 */
608 #if !defined(_KERNEL) || !defined(COMPAT_RTSOCK)
609 #define __align64 __aligned(sizeof(uint64_t))
610 #else
611 #define __align64
612 #endif
613 struct if_msghdr {
614 u_short ifm_msglen __align64;
615 /* to skip over non-understood messages */
616 u_char ifm_version; /* future binary compatibility */
617 u_char ifm_type; /* message type */
618 int ifm_addrs; /* like rtm_addrs */
619 int ifm_flags; /* value of if_flags */
620 u_short ifm_index; /* index for associated ifp */
621 struct if_data ifm_data __align64;
622 /* statistics and other data about if */
623 };
624
625 /*
626 * Message format for use in obtaining information about interface addresses
627 * from sysctl and the routing socket.
628 */
629 struct ifa_msghdr {
630 u_short ifam_msglen __align64;
631 /* to skip over non-understood messages */
632 u_char ifam_version; /* future binary compatibility */
633 u_char ifam_type; /* message type */
634 int ifam_addrs; /* like rtm_addrs */
635 int ifam_flags; /* value of ifa_flags */
636 int ifam_metric; /* value of ifa_metric */
637 u_short ifam_index; /* index for associated ifp */
638 };
639
640 /*
641 * Message format announcing the arrival or departure of a network interface.
642 */
643 struct if_announcemsghdr {
644 u_short ifan_msglen __align64;
645 /* to skip over non-understood messages */
646 u_char ifan_version; /* future binary compatibility */
647 u_char ifan_type; /* message type */
648 u_short ifan_index; /* index for associated ifp */
649 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
650 u_short ifan_what; /* what type of announcement */
651 };
652
653 #define IFAN_ARRIVAL 0 /* interface arrival */
654 #define IFAN_DEPARTURE 1 /* interface departure */
655
656 #undef __align64
657
658 /*
659 * Interface request structure used for socket
660 * ioctl's. All interface ioctl's must have parameter
661 * definitions which begin with ifr_name. The
662 * remainder may be interface specific.
663 */
664 struct ifreq {
665 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
666 union {
667 struct sockaddr ifru_addr;
668 struct sockaddr ifru_dstaddr;
669 struct sockaddr ifru_broadaddr;
670 struct sockaddr_storage ifru_space;
671 short ifru_flags;
672 int ifru_addrflags;
673 int ifru_metric;
674 int ifru_mtu;
675 int ifru_dlt;
676 u_int ifru_value;
677 void * ifru_data;
678 struct {
679 uint32_t b_buflen;
680 void *b_buf;
681 } ifru_b;
682 } ifr_ifru;
683 #define ifr_addr ifr_ifru.ifru_addr /* address */
684 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
685 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
686 #define ifr_space ifr_ifru.ifru_space /* sockaddr_storage */
687 #define ifr_flags ifr_ifru.ifru_flags /* flags */
688 #define ifr_addrflags ifr_ifru.ifru_addrflags /* addr flags */
689 #define ifr_metric ifr_ifru.ifru_metric /* metric */
690 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
691 #define ifr_dlt ifr_ifru.ifru_dlt /* data link type (DLT_*) */
692 #define ifr_value ifr_ifru.ifru_value /* generic value */
693 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */
694 #define ifr_data ifr_ifru.ifru_data /* for use by interface
695 * XXX deprecated
696 */
697 #define ifr_buf ifr_ifru.ifru_b.b_buf /* new interface ioctls */
698 #define ifr_buflen ifr_ifru.ifru_b.b_buflen
699 #define ifr_index ifr_ifru.ifru_value /* interface index, BSD */
700 #define ifr_ifindex ifr_index /* interface index, linux */
701 };
702
703 #ifdef _KERNEL
704 #define ifreq_setdstaddr ifreq_setaddr
705 #define ifreq_setbroadaddr ifreq_setaddr
706 #define ifreq_getdstaddr ifreq_getaddr
707 #define ifreq_getbroadaddr ifreq_getaddr
708
709 static inline const struct sockaddr *
710 /*ARGSUSED*/
ifreq_getaddr(u_long cmd,const struct ifreq * ifr)711 ifreq_getaddr(u_long cmd, const struct ifreq *ifr)
712 {
713 return &ifr->ifr_addr;
714 }
715 #endif /* _KERNEL */
716
717 struct ifcapreq {
718 char ifcr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
719 uint64_t ifcr_capabilities; /* supported capabiliites */
720 uint64_t ifcr_capenable; /* capabilities enabled */
721 };
722
723 struct ifaliasreq {
724 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
725 struct sockaddr ifra_addr;
726 struct sockaddr ifra_dstaddr;
727 #define ifra_broadaddr ifra_dstaddr
728 struct sockaddr ifra_mask;
729 };
730
731 struct ifdatareq {
732 char ifdr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
733 struct if_data ifdr_data;
734 };
735
736 struct ifmediareq {
737 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */
738 int ifm_current; /* current media options */
739 int ifm_mask; /* don't care mask */
740 int ifm_status; /* media status */
741 int ifm_active; /* active options */
742 int ifm_count; /* # entries in ifm_ulist
743 array */
744 int *ifm_ulist; /* media words */
745 };
746
747
748 struct ifdrv {
749 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */
750 unsigned long ifd_cmd;
751 size_t ifd_len;
752 void *ifd_data;
753 };
754 #define IFLINKSTR_QUERYLEN 0x01
755 #define IFLINKSTR_UNSET 0x02
756
757 /*
758 * Structure used in SIOCGIFCONF request.
759 * Used to retrieve interface configuration
760 * for machine (useful for programs which
761 * must know all networks accessible).
762 */
763 struct ifconf {
764 int ifc_len; /* size of associated buffer */
765 union {
766 void * ifcu_buf;
767 struct ifreq *ifcu_req;
768 } ifc_ifcu;
769 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
770 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
771 };
772
773 /*
774 * Structure for SIOC[AGD]LIFADDR
775 */
776 struct if_laddrreq {
777 char iflr_name[IFNAMSIZ];
778 unsigned int flags;
779 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */
780 #define IFLR_ACTIVE 0x4000 /* in/out: link-layer address activation */
781 #define IFLR_FACTORY 0x2000 /* in/out: factory link-layer address */
782 unsigned int prefixlen; /* in/out */
783 struct sockaddr_storage addr; /* in/out */
784 struct sockaddr_storage dstaddr; /* out */
785 };
786
787 /*
788 * Structure for SIOC[SG]IFADDRPREF
789 */
790 struct if_addrprefreq {
791 char ifap_name[IFNAMSIZ];
792 int16_t ifap_preference; /* in/out */
793 struct sockaddr_storage ifap_addr; /* in/out */
794 };
795
796 #include <net/if_arp.h>
797
798 #endif /* _NETBSD_SOURCE */
799
800 #ifdef _KERNEL
801 #ifdef ALTQ
802 #define IFQ_ENQUEUE(ifq, m, err) \
803 do { \
804 mutex_enter((ifq)->ifq_lock); \
805 if (ALTQ_IS_ENABLED((ifq))) \
806 ALTQ_ENQUEUE((ifq), (m), (err)); \
807 else { \
808 if (IF_QFULL((ifq))) { \
809 m_freem((m)); \
810 (err) = ENOBUFS; \
811 } else { \
812 IF_ENQUEUE((ifq), (m)); \
813 (err) = 0; \
814 } \
815 } \
816 if ((err)) \
817 (ifq)->ifq_drops++; \
818 mutex_exit((ifq)->ifq_lock); \
819 } while (/*CONSTCOND*/ 0)
820
821 #define IFQ_DEQUEUE(ifq, m) \
822 do { \
823 mutex_enter((ifq)->ifq_lock); \
824 if (TBR_IS_ENABLED((ifq))) \
825 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \
826 else if (ALTQ_IS_ENABLED((ifq))) \
827 ALTQ_DEQUEUE((ifq), (m)); \
828 else \
829 IF_DEQUEUE((ifq), (m)); \
830 mutex_exit((ifq)->ifq_lock); \
831 } while (/*CONSTCOND*/ 0)
832
833 #define IFQ_POLL(ifq, m) \
834 do { \
835 mutex_enter((ifq)->ifq_lock); \
836 if (TBR_IS_ENABLED((ifq))) \
837 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \
838 else if (ALTQ_IS_ENABLED((ifq))) \
839 ALTQ_POLL((ifq), (m)); \
840 else \
841 IF_POLL((ifq), (m)); \
842 mutex_exit((ifq)->ifq_lock); \
843 } while (/*CONSTCOND*/ 0)
844
845 #define IFQ_PURGE(ifq) \
846 do { \
847 mutex_enter((ifq)->ifq_lock); \
848 if (ALTQ_IS_ENABLED((ifq))) \
849 ALTQ_PURGE((ifq)); \
850 else \
851 IF_PURGE((ifq)); \
852 mutex_exit((ifq)->ifq_lock); \
853 } while (/*CONSTCOND*/ 0)
854
855 #define IFQ_SET_READY(ifq) \
856 do { \
857 (ifq)->altq_flags |= ALTQF_READY; \
858 } while (/*CONSTCOND*/ 0)
859
860 #define IFQ_CLASSIFY(ifq, m, af) \
861 do { \
862 mutex_enter((ifq)->ifq_lock); \
863 if (ALTQ_IS_ENABLED((ifq))) { \
864 if (ALTQ_NEEDS_CLASSIFY((ifq))) \
865 m->m_pkthdr.pattr_class = (*(ifq)->altq_classify) \
866 ((ifq)->altq_clfier, (m), (af)); \
867 m->m_pkthdr.pattr_af = (af); \
868 m->m_pkthdr.pattr_hdr = mtod((m), void *); \
869 } \
870 mutex_exit((ifq)->ifq_lock); \
871 } while (/*CONSTCOND*/ 0)
872 #else /* ! ALTQ */
873 #define IFQ_ENQUEUE(ifq, m, err) \
874 do { \
875 mutex_enter((ifq)->ifq_lock); \
876 if (IF_QFULL((ifq))) { \
877 m_freem((m)); \
878 (err) = ENOBUFS; \
879 } else { \
880 IF_ENQUEUE((ifq), (m)); \
881 (err) = 0; \
882 } \
883 if ((err)) \
884 (ifq)->ifq_drops++; \
885 mutex_exit((ifq)->ifq_lock); \
886 } while (/*CONSTCOND*/ 0)
887
888 #define IFQ_DEQUEUE(ifq, m) \
889 do { \
890 mutex_enter((ifq)->ifq_lock); \
891 IF_DEQUEUE((ifq), (m)); \
892 mutex_exit((ifq)->ifq_lock); \
893 } while (/*CONSTCOND*/ 0)
894
895 #define IFQ_POLL(ifq, m) \
896 do { \
897 mutex_enter((ifq)->ifq_lock); \
898 IF_POLL((ifq), (m)); \
899 mutex_exit((ifq)->ifq_lock); \
900 } while (/*CONSTCOND*/ 0)
901
902 #define IFQ_PURGE(ifq) \
903 do { \
904 mutex_enter((ifq)->ifq_lock); \
905 IF_PURGE((ifq)); \
906 mutex_exit((ifq)->ifq_lock); \
907 } while (/*CONSTCOND*/ 0)
908
909 #define IFQ_SET_READY(ifq) /* nothing */
910
911 #define IFQ_CLASSIFY(ifq, m, af) /* nothing */
912
913 #endif /* ALTQ */
914
915 #define IFQ_IS_EMPTY(ifq) IF_IS_EMPTY((ifq))
916 #define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++)
917 #define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len)
918 #define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++)
919 #define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len))
920
921 #include <sys/mallocvar.h>
922 MALLOC_DECLARE(M_IFADDR);
923 MALLOC_DECLARE(M_IFMADDR);
924
925 int ifreq_setaddr(u_long, struct ifreq *, const struct sockaddr *);
926
927 struct ifnet *if_alloc(u_char);
928 void if_free(struct ifnet *);
929 void if_initname(struct ifnet *, const char *, int);
930 struct ifaddr *if_dl_create(const struct ifnet *, const struct sockaddr_dl **);
931 void if_activate_sadl(struct ifnet *, struct ifaddr *,
932 const struct sockaddr_dl *);
933 void if_set_sadl(struct ifnet *, const void *, u_char, bool);
934 void if_alloc_sadl(struct ifnet *);
935 void if_initialize(struct ifnet *);
936 void if_register(struct ifnet *);
937 void if_attach(struct ifnet *); /* Deprecated. Use if_initialize and if_register */
938 void if_attachdomain(void);
939 void if_deactivate(struct ifnet *);
940 bool if_is_deactivated(struct ifnet *);
941 void if_purgeaddrs(struct ifnet *, int, void (*)(struct ifaddr *));
942 void if_detach(struct ifnet *);
943 void if_down(struct ifnet *);
944 void if_link_state_change(struct ifnet *, int);
945 void if_up(struct ifnet *);
946 void ifinit(void);
947 void ifinit1(void);
948 int ifaddrpref_ioctl(struct socket *, u_long, void *, struct ifnet *);
949 extern int (*ifioctl)(struct socket *, u_long, void *, struct lwp *);
950 int ifioctl_common(struct ifnet *, u_long, void *);
951 int ifpromisc(struct ifnet *, int);
952 int if_addr_init(ifnet_t *, struct ifaddr *, bool);
953 int if_do_dad(struct ifnet *);
954 int if_mcast_op(ifnet_t *, const unsigned long, const struct sockaddr *);
955 int if_flags_set(struct ifnet *, const short);
956 int if_clone_list(int, char *, int *);
957
958 struct ifnet *ifunit(const char *);
959 struct ifnet *if_get(const char *, struct psref *);
960 ifnet_t *if_byindex(u_int);
961 ifnet_t *if_get_byindex(u_int, struct psref *);
962 void if_put(const struct ifnet *, struct psref *);
963 void if_acquire_NOMPSAFE(struct ifnet *, struct psref *);
964
965 static inline if_index_t
if_get_index(const struct ifnet * ifp)966 if_get_index(const struct ifnet *ifp)
967 {
968
969 return ifp != NULL ? ifp->if_index : 0;
970 }
971
972 bool if_held(struct ifnet *);
973
974 void if_input(struct ifnet *, struct mbuf *);
975
976 struct if_percpuq *
977 if_percpuq_create(struct ifnet *);
978 void if_percpuq_destroy(struct if_percpuq *);
979 void
980 if_percpuq_enqueue(struct if_percpuq *, struct mbuf *);
981
982 void ifa_insert(struct ifnet *, struct ifaddr *);
983 void ifa_remove(struct ifnet *, struct ifaddr *);
984
985 void ifaref(struct ifaddr *);
986 void ifafree(struct ifaddr *);
987
988 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *);
989 struct ifaddr *ifa_ifwithaf(int);
990 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *);
991 struct ifaddr *ifa_ifwithnet(const struct sockaddr *);
992 struct ifaddr *ifa_ifwithladdr(const struct sockaddr *);
993 struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *,
994 const struct sockaddr *);
995 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *);
996 void link_rtrequest(int, struct rtentry *, const struct rt_addrinfo *);
997 void p2p_rtrequest(int, struct rtentry *, const struct rt_addrinfo *);
998
999 void if_clone_attach(struct if_clone *);
1000 void if_clone_detach(struct if_clone *);
1001
1002 int if_transmit_lock(struct ifnet *, struct mbuf *);
1003
1004 int ifq_enqueue(struct ifnet *, struct mbuf *);
1005 int ifq_enqueue2(struct ifnet *, struct ifqueue *, struct mbuf *);
1006
1007 int loioctl(struct ifnet *, u_long, void *);
1008 void loopattach(int);
1009 int looutput(struct ifnet *,
1010 struct mbuf *, const struct sockaddr *, const struct rtentry *);
1011 void lortrequest(int, struct rtentry *, const struct rt_addrinfo *);
1012
1013 /*
1014 * These are exported because they're an easy way to tell if
1015 * an interface is going away without having to burn a flag.
1016 */
1017 int if_nulloutput(struct ifnet *, struct mbuf *,
1018 const struct sockaddr *, const struct rtentry *);
1019 void if_nullinput(struct ifnet *, struct mbuf *);
1020 void if_nullstart(struct ifnet *);
1021 int if_nulltransmit(struct ifnet *, struct mbuf *);
1022 int if_nullioctl(struct ifnet *, u_long, void *);
1023 int if_nullinit(struct ifnet *);
1024 void if_nullstop(struct ifnet *, int);
1025 void if_nullslowtimo(struct ifnet *);
1026 #define if_nullwatchdog if_nullslowtimo
1027 void if_nulldrain(struct ifnet *);
1028 #else
1029 struct if_nameindex {
1030 unsigned int if_index; /* 1, 2, ... */
1031 char *if_name; /* null terminated name: "le0", ... */
1032 };
1033
1034 #include <sys/cdefs.h>
1035 __BEGIN_DECLS
1036 unsigned int if_nametoindex(const char *);
1037 char * if_indextoname(unsigned int, char *);
1038 struct if_nameindex * if_nameindex(void);
1039 void if_freenameindex(struct if_nameindex *);
1040 __END_DECLS
1041 #endif /* _KERNEL */ /* XXX really ALTQ? */
1042
1043 #ifdef _KERNEL
1044
1045 #define IFADDR_FIRST(__ifp) TAILQ_FIRST(&(__ifp)->if_addrlist)
1046 #define IFADDR_NEXT(__ifa) TAILQ_NEXT((__ifa), ifa_list)
1047 #define IFADDR_FOREACH(__ifa, __ifp) TAILQ_FOREACH(__ifa, \
1048 &(__ifp)->if_addrlist, ifa_list)
1049 #define IFADDR_FOREACH_SAFE(__ifa, __ifp, __nifa) \
1050 TAILQ_FOREACH_SAFE(__ifa, \
1051 &(__ifp)->if_addrlist, ifa_list, __nifa)
1052 #define IFADDR_EMPTY(__ifp) TAILQ_EMPTY(&(__ifp)->if_addrlist)
1053
1054 #ifdef notyet
1055 #define IFADDR_ENTRY_INIT(__ifa) \
1056 PSLIST_ENTRY_INIT((__ifa), ifa_pslist_entry)
1057 #define IFADDR_ENTRY_DESTROY(__ifa) \
1058 PSLIST_ENTRY_DESTROY((__ifa), ifa_pslist_entry)
1059 #define IFADDR_READER_EMPTY(__ifp) \
1060 (PSLIST_READER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \
1061 ifa_pslist_entry) == NULL)
1062 #define IFADDR_READER_FIRST(__ifp) \
1063 PSLIST_READER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \
1064 ifa_pslist_entry)
1065 #define IFADDR_READER_NEXT(__ifa) \
1066 PSLIST_READER_NEXT((__ifa), struct ifaddr, ifa_pslist_entry)
1067 #define IFADDR_READER_FOREACH(__ifa, __ifp) \
1068 PSLIST_READER_FOREACH((__ifa), &(__ifp)->if_addr_pslist, struct ifaddr,\
1069 ifa_pslist_entry)
1070 #define IFADDR_WRITER_INSERT_HEAD(__ifp, __ifa) \
1071 PSLIST_WRITER_INSERT_HEAD(&(__ifp)->if_addr_pslist, (__ifa), \
1072 ifa_pslist_entry)
1073 #define IFADDR_WRITER_REMOVE(__ifa) \
1074 PSLIST_WRITER_REMOVE((__ifa), ifa_pslist_entry)
1075 #define IFADDR_WRITER_FOREACH(__ifa, __ifp) \
1076 PSLIST_WRITER_FOREACH((__ifa), &(__ifp)->if_addr_pslist, struct ifaddr,\
1077 ifa_pslist_entry)
1078 #define IFADDR_WRITER_NEXT(__ifp) \
1079 PSLIST_WRITER_NEXT((__ifp), struct ifaddr, ifa_pslist_entry)
1080 #define IFADDR_WRITER_INSERT_AFTER(__ifp, __new) \
1081 PSLIST_WRITER_INSERT_AFTER((__ifp), (__new), ifa_pslist_entry)
1082 #define IFADDR_WRITER_EMPTY(__ifp) \
1083 (PSLIST_WRITER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \
1084 ifa_pslist_entry) == NULL)
1085 #define IFADDR_WRITER_INSERT_TAIL(__ifp, __new) \
1086 do { \
1087 if (IFADDR_WRITER_EMPTY((__ifp))) { \
1088 IFADDR_WRITER_INSERT_HEAD((__ifp), (__new)); \
1089 } else { \
1090 struct ifaddr *__ifa; \
1091 IFADDR_WRITER_FOREACH(__ifa, (__ifp)) { \
1092 if (IFADDR_WRITER_NEXT(__ifa) == NULL) {\
1093 IFADDR_WRITER_INSERT_AFTER(__ifa,\
1094 (__new)); \
1095 break; \
1096 } \
1097 } \
1098 } \
1099 } while (0)
1100 #else
1101 #define IFADDR_ENTRY_INIT(__ifa) \
1102 do {} while (0)
1103 #define IFADDR_ENTRY_DESTROY(__ifa) \
1104 do {} while (0)
1105 #define IFADDR_READER_EMPTY(__ifp) \
1106 IFADDR_EMPTY(__ifp)
1107 #define IFADDR_READER_FIRST(__ifp) \
1108 IFADDR_FIRST(__ifp)
1109 #define IFADDR_READER_NEXT(__ifa) \
1110 IFADDR_NEXT(__ifa)
1111 #define IFADDR_READER_FOREACH(__ifa, __ifp) \
1112 IFADDR_FOREACH(__ifa, __ifp)
1113 #define IFADDR_WRITER_INSERT_HEAD(__ifp, __ifa) \
1114 do {} while (0)
1115 #define IFADDR_WRITER_REMOVE(__ifa) \
1116 do {} while (0)
1117 #define IFADDR_WRITER_FOREACH(__ifa, __ifp) \
1118 IFADDR_FOREACH(__ifa, __ifp)
1119 #define IFADDR_WRITER_NEXT(__ifp) \
1120 IFADDR_NEXT(__ifa)
1121 #define IFADDR_WRITER_INSERT_AFTER(__ifp, __new) \
1122 do {} while (0)
1123 #define IFADDR_WRITER_EMPTY(__ifp) \
1124 IFADDR_EMPTY(__ifp)
1125 #define IFADDR_WRITER_INSERT_TAIL(__ifp, __new) \
1126 do {} while (0)
1127 #endif /* notyet */
1128
1129 #define IFNET_LOCK() mutex_enter(&ifnet_mtx)
1130 #define IFNET_UNLOCK() mutex_exit(&ifnet_mtx)
1131 #define IFNET_LOCKED() mutex_owned(&ifnet_mtx)
1132
1133 #define IFNET_READER_EMPTY() \
1134 (PSLIST_READER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) == NULL)
1135 #define IFNET_READER_FIRST() \
1136 PSLIST_READER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry)
1137 #define IFNET_READER_NEXT(__ifp) \
1138 PSLIST_READER_NEXT((__ifp), struct ifnet, if_pslist_entry)
1139 #define IFNET_READER_FOREACH(__ifp) \
1140 PSLIST_READER_FOREACH((__ifp), &ifnet_pslist, struct ifnet, \
1141 if_pslist_entry)
1142 #define IFNET_WRITER_INSERT_HEAD(__ifp) \
1143 PSLIST_WRITER_INSERT_HEAD(&ifnet_pslist, (__ifp), if_pslist_entry)
1144 #define IFNET_WRITER_REMOVE(__ifp) \
1145 PSLIST_WRITER_REMOVE((__ifp), if_pslist_entry)
1146 #define IFNET_WRITER_FOREACH(__ifp) \
1147 PSLIST_WRITER_FOREACH((__ifp), &ifnet_pslist, struct ifnet, \
1148 if_pslist_entry)
1149 #define IFNET_WRITER_NEXT(__ifp) \
1150 PSLIST_WRITER_NEXT((__ifp), struct ifnet, if_pslist_entry)
1151 #define IFNET_WRITER_INSERT_AFTER(__ifp, __new) \
1152 PSLIST_WRITER_INSERT_AFTER((__ifp), (__new), if_pslist_entry)
1153 #define IFNET_WRITER_EMPTY() \
1154 (PSLIST_WRITER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) == NULL)
1155 #define IFNET_WRITER_INSERT_TAIL(__new) \
1156 do { \
1157 if (IFNET_WRITER_EMPTY()) { \
1158 IFNET_WRITER_INSERT_HEAD((__new)); \
1159 } else { \
1160 struct ifnet *__ifp; \
1161 IFNET_WRITER_FOREACH(__ifp) { \
1162 if (IFNET_WRITER_NEXT(__ifp) == NULL) { \
1163 IFNET_WRITER_INSERT_AFTER(__ifp,\
1164 (__new)); \
1165 break; \
1166 } \
1167 } \
1168 } \
1169 } while (0)
1170
1171 extern struct pslist_head ifnet_pslist;
1172 extern struct psref_class *ifnet_psref_class;
1173 extern kmutex_t ifnet_mtx;
1174
1175 extern struct ifnet *lo0ifp;
1176
1177 /*
1178 * ifq sysctl support
1179 */
1180 int sysctl_ifq(int *name, u_int namelen, void *oldp,
1181 size_t *oldlenp, void *newp, size_t newlen,
1182 struct ifqueue *ifq);
1183 /* symbolic names for terminal (per-protocol) CTL_IFQ_ nodes */
1184 #define IFQCTL_LEN 1
1185 #define IFQCTL_MAXLEN 2
1186 #define IFQCTL_PEAK 3
1187 #define IFQCTL_DROPS 4
1188 #define IFQCTL_MAXID 5
1189
1190 #endif /* _KERNEL */
1191
1192 #ifdef _NETBSD_SOURCE
1193 /*
1194 * sysctl for ifq (per-protocol packet input queue variant of ifqueue)
1195 */
1196 #define CTL_IFQ_NAMES { \
1197 { 0, 0 }, \
1198 { "len", CTLTYPE_INT }, \
1199 { "maxlen", CTLTYPE_INT }, \
1200 { "peak", CTLTYPE_INT }, \
1201 { "drops", CTLTYPE_INT }, \
1202 }
1203 #endif /* _NETBSD_SOURCE */
1204 #endif /* !_NET_IF_H_ */
1205