xref: /freebsd/sys/netinet/sctp_pcb.h (revision 39beb93c3f8bdbf72a61fda42300b5ebed7390c8)
1 /*-
2  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are met:
6  *
7  * a) Redistributions of source code must retain the above copyright notice,
8  *   this list of conditions and the following disclaimer.
9  *
10  * b) Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in
12  *   the documentation and/or other materials provided with the distribution.
13  *
14  * c) Neither the name of Cisco Systems, Inc. nor the names of its
15  *    contributors may be used to endorse or promote products derived
16  *    from this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28  * THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 /* $KAME: sctp_pcb.h,v 1.21 2005/07/16 01:18:47 suz Exp $	 */
32 
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35 
36 #ifndef __sctp_pcb_h__
37 #define __sctp_pcb_h__
38 
39 #include <netinet/sctp_os.h>
40 #include <netinet/sctp.h>
41 #include <netinet/sctp_constants.h>
42 #include <netinet/sctp_sysctl.h>
43 
44 LIST_HEAD(sctppcbhead, sctp_inpcb);
45 LIST_HEAD(sctpasochead, sctp_tcb);
46 LIST_HEAD(sctpladdr, sctp_laddr);
47 LIST_HEAD(sctpvtaghead, sctp_tagblock);
48 LIST_HEAD(sctp_vrflist, sctp_vrf);
49 LIST_HEAD(sctp_ifnlist, sctp_ifn);
50 LIST_HEAD(sctp_ifalist, sctp_ifa);
51 TAILQ_HEAD(sctp_readhead, sctp_queued_to_read);
52 TAILQ_HEAD(sctp_streamhead, sctp_stream_queue_pending);
53 
54 #include <netinet/sctp_structs.h>
55 #include <netinet/sctp_auth.h>
56 
57 #define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask)
58 #define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask)
59 
60 struct sctp_vrf {
61 	LIST_ENTRY(sctp_vrf) next_vrf;
62 	struct sctp_ifalist *vrf_addr_hash;
63 	struct sctp_ifnlist ifnlist;
64 	uint32_t vrf_id;
65 	uint32_t tbl_id_v4;	/* default v4 table id */
66 	uint32_t tbl_id_v6;	/* default v6 table id */
67 	uint32_t total_ifa_count;
68 	u_long vrf_addr_hashmark;
69 	uint32_t refcount;
70 };
71 
72 struct sctp_ifn {
73 	struct sctp_ifalist ifalist;
74 	struct sctp_vrf *vrf;
75 	         LIST_ENTRY(sctp_ifn) next_ifn;
76 	         LIST_ENTRY(sctp_ifn) next_bucket;
77 	void *ifn_p;		/* never access without appropriate lock */
78 	uint32_t ifn_mtu;
79 	uint32_t ifn_type;
80 	uint32_t ifn_index;	/* shorthand way to look at ifn for reference */
81 	uint32_t refcount;	/* number of reference held should be >=
82 				 * ifa_count */
83 	uint32_t ifa_count;	/* IFA's we hold (in our list - ifalist) */
84 	uint32_t num_v6;	/* number of v6 addresses */
85 	uint32_t num_v4;	/* number of v4 addresses */
86 	uint32_t registered_af;	/* registered address family for i/f events */
87 	char ifn_name[SCTP_IFNAMSIZ];
88 };
89 
90 /* SCTP local IFA flags */
91 #define SCTP_ADDR_VALID         0x00000001	/* its up and active */
92 #define SCTP_BEING_DELETED      0x00000002	/* being deleted, when
93 						 * refcount = 0. Note that it
94 						 * is pulled from the ifn list
95 						 * and ifa_p is nulled right
96 						 * away but it cannot be freed
97 						 * until the last *net
98 						 * pointing to it is deleted. */
99 #define SCTP_ADDR_DEFER_USE     0x00000004	/* Hold off using this one */
100 #define SCTP_ADDR_IFA_UNUSEABLE 0x00000008
101 
102 struct sctp_ifa {
103 	LIST_ENTRY(sctp_ifa) next_ifa;
104 	LIST_ENTRY(sctp_ifa) next_bucket;
105 	struct sctp_ifn *ifn_p;	/* back pointer to parent ifn */
106 	void *ifa;		/* pointer to ifa, needed for flag update for
107 				 * that we MUST lock appropriate locks. This
108 				 * is for V6. */
109 	union sctp_sockstore address;
110 	uint32_t refcount;	/* number of folks refering to this */
111 	uint32_t flags;
112 	uint32_t localifa_flags;
113 	uint32_t vrf_id;	/* vrf_id of this addr (for deleting) */
114 	uint8_t src_is_loop;
115 	uint8_t src_is_priv;
116 	uint8_t src_is_glob;
117 	uint8_t resv;
118 };
119 
120 struct sctp_laddr {
121 	LIST_ENTRY(sctp_laddr) sctp_nxt_addr;	/* next in list */
122 	struct sctp_ifa *ifa;
123 	uint32_t action;	/* Used during asconf and adding if no-zero
124 				 * src-addr selection will not consider this
125 				 * address. */
126 	struct timeval start_time;	/* time when this address was created */
127 };
128 
129 struct sctp_block_entry {
130 	int error;
131 };
132 
133 struct sctp_timewait {
134 	uint32_t tv_sec_at_expire;	/* the seconds from boot to expire */
135 	uint32_t v_tag;		/* the vtag that can not be reused */
136 	uint16_t lport;		/* the local port used in vtag */
137 	uint16_t rport;		/* the remote port used in vtag */
138 };
139 
140 struct sctp_tagblock {
141 	LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock;
142 	struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK];
143 };
144 
145 
146 struct sctp_epinfo {
147 	struct socket *udp_tun_socket;
148 	struct sctpasochead *sctp_asochash;
149 	u_long hashasocmark;
150 
151 	struct sctppcbhead *sctp_ephash;
152 	u_long hashmark;
153 
154 	/*-
155 	 * The TCP model represents a substantial overhead in that we get an
156 	 * additional hash table to keep explicit connections in. The
157 	 * listening TCP endpoint will exist in the usual ephash above and
158 	 * accept only INIT's. It will be incapable of sending off an INIT.
159 	 * When a dg arrives we must look in the normal ephash. If we find a
160 	 * TCP endpoint that will tell us to go to the specific endpoint
161 	 * hash and re-hash to find the right assoc/socket. If we find a UDP
162 	 * model socket we then must complete the lookup. If this fails,
163 	 * i.e. no association can be found then we must continue to see if
164 	 * a sctp_peeloff()'d socket is in the tcpephash (a spun off socket
165 	 * acts like a TCP model connected socket).
166 	 */
167 	struct sctppcbhead *sctp_tcpephash;
168 	u_long hashtcpmark;
169 	uint32_t hashtblsize;
170 
171 	struct sctp_vrflist *sctp_vrfhash;
172 	u_long hashvrfmark;
173 
174 	struct sctp_ifnlist *vrf_ifn_hash;
175 	u_long vrf_ifn_hashmark;
176 
177 	struct sctppcbhead listhead;
178 	struct sctpladdr addr_wq;
179 
180 	struct sctpiterators iteratorhead;
181 	int threads_must_exit;
182 	/* ep zone info */
183 	sctp_zone_t ipi_zone_ep;
184 	sctp_zone_t ipi_zone_asoc;
185 	sctp_zone_t ipi_zone_laddr;
186 	sctp_zone_t ipi_zone_net;
187 	sctp_zone_t ipi_zone_chunk;
188 	sctp_zone_t ipi_zone_readq;
189 	sctp_zone_t ipi_zone_strmoq;
190 	sctp_zone_t ipi_zone_asconf;
191 	sctp_zone_t ipi_zone_asconf_ack;
192 
193 	struct rwlock ipi_ep_mtx;
194 	struct mtx it_mtx;
195 	struct mtx ipi_iterator_wq_mtx;
196 	struct rwlock ipi_addr_mtx;
197 	struct mtx ipi_pktlog_mtx;
198 	uint32_t ipi_count_ep;
199 
200 	/* assoc/tcb zone info */
201 	uint32_t ipi_count_asoc;
202 
203 	/* local addrlist zone info */
204 	uint32_t ipi_count_laddr;
205 
206 	/* remote addrlist zone info */
207 	uint32_t ipi_count_raddr;
208 
209 	/* chunk structure list for output */
210 	uint32_t ipi_count_chunk;
211 
212 	/* socket queue zone info */
213 	uint32_t ipi_count_readq;
214 
215 	/* socket queue zone info */
216 	uint32_t ipi_count_strmoq;
217 
218 	/* Number of vrfs */
219 	uint32_t ipi_count_vrfs;
220 
221 	/* Number of ifns */
222 	uint32_t ipi_count_ifns;
223 
224 	/* Number of ifas */
225 	uint32_t ipi_count_ifas;
226 
227 	/* system wide number of free chunks hanging around */
228 	uint32_t ipi_free_chunks;
229 	uint32_t ipi_free_strmoq;
230 
231 
232 	struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE];
233 
234 	/* address work queue handling */
235 #if defined(SCTP_USE_THREAD_BASED_ITERATOR)
236 	uint32_t iterator_running;
237 	SCTP_PROCESS_STRUCT thread_proc;
238 #endif
239 	struct sctp_timer addr_wq_timer;
240 
241 };
242 
243 
244 struct sctp_base_info {
245 	/*
246 	 * All static structures that anchor the system must be here.
247 	 */
248 	struct sctp_epinfo sctppcbinfo;
249 	struct sctpstat sctpstat;
250 	struct sctp_sysctl sctpsysctl;
251 	uint8_t first_time;
252 	char sctp_pcb_initialized;
253 #if defined(SCTP_PACKET_LOGGING)
254 	int packet_log_writers;
255 	int packet_log_end;
256 	uint8_t packet_log_buffer[SCTP_PACKET_LOG_SIZE];
257 #endif
258 };
259 
260 /*-
261  * Here we have all the relevant information for each SCTP entity created. We
262  * will need to modify this as approprate. We also need to figure out how to
263  * access /dev/random.
264  */
265 struct sctp_pcb {
266 	unsigned int time_of_secret_change;	/* number of seconds from
267 						 * timeval.tv_sec */
268 	uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS];
269 	unsigned int size_of_a_cookie;
270 
271 	unsigned int sctp_timeoutticks[SCTP_NUM_TMRS];
272 	unsigned int sctp_minrto;
273 	unsigned int sctp_maxrto;
274 	unsigned int initial_rto;
275 	int initial_init_rto_max;
276 
277 	unsigned int sctp_sack_freq;
278 	uint32_t sctp_sws_sender;
279 	uint32_t sctp_sws_receiver;
280 
281 	uint32_t sctp_default_cc_module;
282 	/* authentication related fields */
283 	struct sctp_keyhead shared_keys;
284 	sctp_auth_chklist_t *local_auth_chunks;
285 	sctp_hmaclist_t *local_hmacs;
286 	uint16_t default_keyid;
287 
288 	/* various thresholds */
289 	/* Max times I will init at a guy */
290 	uint16_t max_init_times;
291 
292 	/* Max times I will send before we consider someone dead */
293 	uint16_t max_send_times;
294 
295 	uint16_t def_net_failure;
296 
297 	/* number of streams to pre-open on a association */
298 	uint16_t pre_open_stream_count;
299 	uint16_t max_open_streams_intome;
300 
301 	/* random number generator */
302 	uint32_t random_counter;
303 	uint8_t random_numbers[SCTP_SIGNATURE_ALOC_SIZE];
304 	uint8_t random_store[SCTP_SIGNATURE_ALOC_SIZE];
305 
306 	/*
307 	 * This timer is kept running per endpoint.  When it fires it will
308 	 * change the secret key.  The default is once a hour
309 	 */
310 	struct sctp_timer signature_change;
311 
312 	/* Zero copy full buffer timer */
313 	struct sctp_timer zero_copy_timer;
314 	/* Zero copy app to transport (sendq) read repulse timer */
315 	struct sctp_timer zero_copy_sendq_timer;
316 	uint32_t def_cookie_life;
317 	/* defaults to 0 */
318 	int auto_close_time;
319 	uint32_t initial_sequence_debug;
320 	uint32_t adaptation_layer_indicator;
321 	uint32_t store_at;
322 	uint8_t max_burst;
323 	char current_secret_number;
324 	char last_secret_number;
325 };
326 
327 #ifndef SCTP_ALIGNMENT
328 #define SCTP_ALIGNMENT 32
329 #endif
330 
331 #ifndef SCTP_ALIGNM1
332 #define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1)
333 #endif
334 
335 #define sctp_lport ip_inp.inp.inp_lport
336 
337 struct sctp_pcbtsn_rlog {
338 	uint32_t vtag;
339 	uint16_t strm;
340 	uint16_t seq;
341 	uint16_t sz;
342 	uint16_t flgs;
343 };
344 
345 #define SCTP_READ_LOG_SIZE 135	/* we choose the number to make a pcb a page */
346 
347 
348 struct sctp_inpcb {
349 	/*-
350 	 * put an inpcb in front of it all, kind of a waste but we need to
351 	 * for compatability with all the other stuff.
352 	 */
353 	union {
354 		struct inpcb inp;
355 		char align[(sizeof(struct in6pcb) + SCTP_ALIGNM1) &
356 		        ~SCTP_ALIGNM1];
357 	}     ip_inp;
358 
359 
360 	/* Socket buffer lock protects read_queue and of course sb_cc */
361 	struct sctp_readhead read_queue;
362 
363 	              LIST_ENTRY(sctp_inpcb) sctp_list;	/* lists all endpoints */
364 	/* hash of all endpoints for model */
365 	              LIST_ENTRY(sctp_inpcb) sctp_hash;
366 	/* count of local addresses bound, 0 if bound all */
367 	int laddr_count;
368 
369 	/* list of addrs in use by the EP, NULL if bound-all */
370 	struct sctpladdr sctp_addr_list;
371 	/*
372 	 * used for source address selection rotation when we are subset
373 	 * bound
374 	 */
375 	struct sctp_laddr *next_addr_touse;
376 
377 	/* back pointer to our socket */
378 	struct socket *sctp_socket;
379 	uint32_t sctp_flags;	/* INP state flag set */
380 	uint32_t sctp_features;	/* Feature flags */
381 	uint32_t sctp_mobility_features;	/* Mobility  Feature flags */
382 	struct sctp_pcb sctp_ep;/* SCTP ep data */
383 	/* head of the hash of all associations */
384 	struct sctpasochead *sctp_tcbhash;
385 	u_long sctp_hashmark;
386 	/* head of the list of all associations */
387 	struct sctpasochead sctp_asoc_list;
388 #ifdef SCTP_TRACK_FREED_ASOCS
389 	struct sctpasochead sctp_asoc_free_list;
390 #endif
391 	struct sctp_iterator *inp_starting_point_for_iterator;
392 	uint32_t sctp_frag_point;
393 	uint32_t partial_delivery_point;
394 	uint32_t sctp_context;
395 	struct sctp_nonpad_sndrcvinfo def_send;
396 	/*-
397 	 * These three are here for the sosend_dgram
398 	 * (pkt, pkt_last and control).
399 	 * routine. However, I don't think anyone in
400 	 * the current FreeBSD kernel calls this. So
401 	 * they are candidates with sctp_sendm for
402 	 * de-supporting.
403 	 */
404 	struct mbuf *pkt, *pkt_last;
405 	struct mbuf *control;
406 	struct mtx inp_mtx;
407 	struct mtx inp_create_mtx;
408 	struct mtx inp_rdata_mtx;
409 	int32_t refcount;
410 	uint32_t def_vrf_id;
411 	uint32_t total_sends;
412 	uint32_t total_recvs;
413 	uint32_t last_abort_code;
414 	uint32_t total_nospaces;
415 	struct sctpasochead *sctp_asocidhash;
416 	u_long hashasocidmark;
417 	uint32_t sctp_associd_counter;
418 
419 #ifdef SCTP_ASOCLOG_OF_TSNS
420 	struct sctp_pcbtsn_rlog readlog[SCTP_READ_LOG_SIZE];
421 	uint32_t readlog_index;
422 #endif
423 };
424 
425 struct sctp_tcb {
426 	struct socket *sctp_socket;	/* back pointer to socket */
427 	struct sctp_inpcb *sctp_ep;	/* back pointer to ep */
428 	           LIST_ENTRY(sctp_tcb) sctp_tcbhash;	/* next link in hash
429 							 * table */
430 	           LIST_ENTRY(sctp_tcb) sctp_tcblist;	/* list of all of the
431 							 * TCB's */
432 	           LIST_ENTRY(sctp_tcb) sctp_tcbasocidhash;	/* next link in asocid
433 								 * hash table */
434 	           LIST_ENTRY(sctp_tcb) sctp_asocs;	/* vtag hash list */
435 	struct sctp_block_entry *block_entry;	/* pointer locked by  socket
436 						 * send buffer */
437 	struct sctp_association asoc;
438 	/*-
439 	 * freed_by_sorcv_sincelast is protected by the sockbuf_lock NOT the
440 	 * tcb_lock. Its special in this way to help avoid extra mutex calls
441 	 * in the reading of data.
442 	 */
443 	uint32_t freed_by_sorcv_sincelast;
444 	uint32_t total_sends;
445 	uint32_t total_recvs;
446 	int freed_from_where;
447 	uint16_t rport;		/* remote port in network format */
448 	uint16_t resv;
449 	struct mtx tcb_mtx;
450 	struct mtx tcb_send_mtx;
451 };
452 
453 
454 
455 #include <netinet/sctp_lock_bsd.h>
456 
457 
458 /* TODO where to put non-_KERNEL things for __Userspace__? */
459 #if defined(_KERNEL) || defined(__Userspace__)
460 
461 /* Attention Julian, this is the extern that
462  * goes with the base info. sctp_pcb.c has
463  * the real definition.
464  */
465 extern struct sctp_base_info system_base_info;
466 
467 #ifdef INET6
468 int SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b);
469 
470 #endif
471 
472 void sctp_fill_pcbinfo(struct sctp_pcbinfo *);
473 
474 struct sctp_ifn *
475          sctp_find_ifn(void *ifn, uint32_t ifn_index);
476 
477 struct sctp_vrf *sctp_allocate_vrf(int vrfid);
478 struct sctp_vrf *sctp_find_vrf(uint32_t vrfid);
479 void sctp_free_vrf(struct sctp_vrf *vrf);
480 
481 /*-
482  * Change address state, can be used if
483  * O/S supports telling transports about
484  * changes to IFA/IFN's (link layer triggers).
485  * If a ifn goes down, we will do src-addr-selection
486  * and NOT use that, as a source address. This does
487  * not stop the routing system from routing out
488  * that interface, but we won't put it as a source.
489  */
490 void sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index);
491 void sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index);
492 
493 struct sctp_ifa *
494 sctp_add_addr_to_vrf(uint32_t vrfid,
495     void *ifn, uint32_t ifn_index, uint32_t ifn_type,
496     const char *if_name,
497     void *ifa, struct sockaddr *addr, uint32_t ifa_flags,
498     int dynamic_add);
499 
500 void sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu);
501 
502 void sctp_free_ifn(struct sctp_ifn *sctp_ifnp);
503 void sctp_free_ifa(struct sctp_ifa *sctp_ifap);
504 
505 
506 void
507 sctp_del_addr_from_vrf(uint32_t vrfid, struct sockaddr *addr,
508     uint32_t ifn_index, const char *if_name);
509 
510 
511 
512 struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *);
513 
514 struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int, uint32_t);
515 
516 int
517 sctp_inpcb_bind(struct socket *, struct sockaddr *,
518     struct sctp_ifa *, struct thread *);
519 
520 struct sctp_tcb *
521 sctp_findassociation_addr(struct mbuf *, int, int,
522     struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **,
523     struct sctp_nets **, uint32_t vrf_id);
524 
525 struct sctp_tcb *
526 sctp_findassociation_addr_sa(struct sockaddr *,
527     struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int, uint32_t);
528 
529 void
530 sctp_move_pcb_and_assoc(struct sctp_inpcb *, struct sctp_inpcb *,
531     struct sctp_tcb *);
532 
533 /*-
534  * For this call ep_addr, the to is the destination endpoint address of the
535  * peer (relative to outbound). The from field is only used if the TCP model
536  * is enabled and helps distingush amongst the subset bound (non-boundall).
537  * The TCP model MAY change the actual ep field, this is why it is passed.
538  */
539 struct sctp_tcb *
540 sctp_findassociation_ep_addr(struct sctp_inpcb **,
541     struct sockaddr *, struct sctp_nets **, struct sockaddr *,
542     struct sctp_tcb *);
543 
544 struct sctp_tcb *
545          sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock);
546 
547 struct sctp_tcb *
548 sctp_findassociation_ep_asocid(struct sctp_inpcb *,
549     sctp_assoc_t, int);
550 
551 struct sctp_tcb *
552 sctp_findassociation_ep_asconf(struct mbuf *, int, int,
553     struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **, uint32_t vrf_id);
554 
555 int sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id);
556 
557 int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id);
558 
559 void sctp_inpcb_free(struct sctp_inpcb *, int, int);
560 
561 struct sctp_tcb *
562 sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *,
563     int, int *, uint32_t, uint32_t, struct thread *);
564 
565 int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int);
566 
567 
568 void sctp_delete_from_timewait(uint32_t, uint16_t, uint16_t);
569 
570 int sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport);
571 
572 void
573      sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport);
574 
575 void sctp_add_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *, uint32_t);
576 
577 int sctp_insert_laddr(struct sctpladdr *, struct sctp_ifa *, uint32_t);
578 
579 void sctp_remove_laddr(struct sctp_laddr *);
580 
581 void sctp_del_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *);
582 
583 int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, int, int);
584 
585 void sctp_remove_net(struct sctp_tcb *, struct sctp_nets *);
586 
587 int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *);
588 
589 void sctp_pcb_init(void);
590 
591 void sctp_pcb_finish(void);
592 
593 void sctp_add_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *);
594 void sctp_del_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *);
595 
596 int
597 sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int,
598     int, struct sctphdr *, struct sockaddr *);
599 
600 int
601 sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *,
602     struct sctp_nets *);
603 
604 int sctp_is_vtag_good(struct sctp_inpcb *, uint32_t, uint16_t lport, uint16_t rport, struct timeval *, int);
605 
606 /* void sctp_drain(void); */
607 
608 int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *);
609 
610 int sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp);
611 
612 /*-
613  * Null in last arg inpcb indicate run on ALL ep's. Specific inp in last arg
614  * indicates run on ONLY assoc's of the specified endpoint.
615  */
616 int
617 sctp_initiate_iterator(inp_func inpf,
618     asoc_func af,
619     inp_func inpe,
620     uint32_t, uint32_t,
621     uint32_t, void *,
622     uint32_t,
623     end_func ef,
624     struct sctp_inpcb *,
625     uint8_t co_off);
626 
627 #endif				/* _KERNEL */
628 #endif				/* !__sctp_pcb_h__ */
629