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31 /* $KAME: sctp_pcb.h,v 1.21 2005/07/16 01:18:47 suz Exp $ */
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #ifndef __sctp_pcb_h__
37 #define __sctp_pcb_h__
39 #include <netinet/sctp_os.h>
40 #include <netinet/sctp.h>
41 #include <netinet/sctp_constants.h>
43 LIST_HEAD(sctppcbhead, sctp_inpcb);
44 LIST_HEAD(sctpasochead, sctp_tcb);
45 LIST_HEAD(sctpladdr, sctp_laddr);
46 LIST_HEAD(sctpvtaghead, sctp_tagblock);
47 LIST_HEAD(sctp_vrflist, sctp_vrf);
48 LIST_HEAD(sctp_ifnlist, sctp_ifn);
49 LIST_HEAD(sctp_ifalist, sctp_ifa);
50 TAILQ_HEAD(sctp_readhead, sctp_queued_to_read);
51 TAILQ_HEAD(sctp_streamhead, sctp_stream_queue_pending);
53 #include <netinet/sctp_structs.h>
54 #include <netinet/sctp_auth.h>
56 #define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask)
57 #define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask)
60 LIST_ENTRY(sctp_vrf) next_vrf;
61 struct sctp_ifalist *vrf_addr_hash;
62 struct sctp_ifnlist *vrf_ifn_hash;
63 struct sctp_ifnlist ifnlist;
65 uint32_t total_ifa_count;
66 u_long vrf_addr_hashmark;
67 u_long vrf_ifn_hashmark;
71 struct sctp_ifalist ifalist;
73 LIST_ENTRY(sctp_ifn) next_ifn;
74 LIST_ENTRY(sctp_ifn) next_bucket;
75 void *ifn_p; /* never access without appropriate lock */
78 uint32_t ifn_index; /* shorthand way to look at ifn for reference */
79 uint32_t refcount; /* number of reference held should be >=
81 uint32_t ifa_count; /* IFA's we hold (in our list - ifalist) */
82 char ifn_name[SCTP_IFNAMSIZ];
85 /* SCTP local IFA flags */
86 #define SCTP_ADDR_VALID 0x00000001 /* its up and active */
87 #define SCTP_BEING_DELETED 0x00000002 /* being deleted, when
88 * refcount = 0. Note that it
89 * is pulled from the ifn list
90 * and ifa_p is nulled right
91 * away but it cannot be freed
93 * pointing to it is deleted. */
94 #define SCTP_ADDR_DEFER_USE 0x00000004 /* Hold off using this one */
95 #define SCTP_ADDR_IFA_UNUSEABLE 0x00000008
98 LIST_ENTRY(sctp_ifa) next_ifa;
99 LIST_ENTRY(sctp_ifa) next_bucket;
100 struct sctp_ifn *ifn_p; /* back pointer to parent ifn */
101 void *ifa; /* pointer to ifa, needed for flag update for
102 * that we MUST lock appropriate locks. This
104 union sctp_sockstore address;
105 uint32_t refcount; /* number of folks refering to this */
107 uint32_t localifa_flags;
116 LIST_ENTRY(sctp_laddr) sctp_nxt_addr; /* next in list */
117 struct sctp_ifa *ifa;
118 uint32_t action; /* Used during asconf and adding if no-zero
119 * src-addr selection will not consider this
123 struct sctp_block_entry {
127 struct sctp_timewait {
128 uint32_t tv_sec_at_expire; /* the seconds from boot to expire */
129 uint32_t v_tag; /* the vtag that can not be reused */
132 struct sctp_tagblock {
133 LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock;
134 struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK];
138 struct sctpasochead *sctp_asochash;
141 struct sctppcbhead *sctp_ephash;
144 struct sctpasochead *sctp_restarthash;
145 u_long hashrestartmark;
147 * The TCP model represents a substantial overhead in that we get an
148 * additional hash table to keep explicit connections in. The
149 * listening TCP endpoint will exist in the usual ephash above and
150 * accept only INIT's. It will be incapable of sending off an INIT.
151 * When a dg arrives we must look in the normal ephash. If we find a
152 * TCP endpoint that will tell us to go to the specific endpoint
153 * hash and re-hash to find the right assoc/socket. If we find a UDP
154 * model socket we then must complete the lookup. If this fails,
155 * i.e. no association can be found then we must continue to see if
156 * a sctp_peeloff()'d socket is in the tcpephash (a spun off socket
157 * acts like a TCP model connected socket).
159 struct sctppcbhead *sctp_tcpephash;
161 uint32_t hashtblsize;
163 struct sctp_vrflist *sctp_vrfhash;
166 struct sctppcbhead listhead;
167 struct sctpladdr addr_wq;
169 struct sctpiterators iteratorhead;
172 sctp_zone_t ipi_zone_ep;
173 sctp_zone_t ipi_zone_asoc;
174 sctp_zone_t ipi_zone_laddr;
175 sctp_zone_t ipi_zone_net;
176 sctp_zone_t ipi_zone_chunk;
177 sctp_zone_t ipi_zone_readq;
178 sctp_zone_t ipi_zone_strmoq;
180 struct mtx ipi_ep_mtx;
182 struct mtx ipi_iterator_wq_mtx;
183 struct mtx ipi_addr_mtx;
184 uint32_t ipi_count_ep;
186 /* assoc/tcb zone info */
187 uint32_t ipi_count_asoc;
189 /* local addrlist zone info */
190 uint32_t ipi_count_laddr;
192 /* remote addrlist zone info */
193 uint32_t ipi_count_raddr;
195 /* chunk structure list for output */
196 uint32_t ipi_count_chunk;
198 /* socket queue zone info */
199 uint32_t ipi_count_readq;
201 /* socket queue zone info */
202 uint32_t ipi_count_strmoq;
205 uint32_t ipi_count_vrfs;
208 uint32_t ipi_count_ifns;
211 uint32_t ipi_count_ifas;
213 /* system wide number of free chunks hanging around */
214 uint32_t ipi_free_chunks;
215 uint32_t ipi_free_strmoq;
218 struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE];
220 /* address work queue handling */
221 #if defined(SCTP_USE_THREAD_BASED_ITERATOR)
222 uint32_t iterator_running;
223 SCTP_PROCESS_STRUCT thread_proc;
225 struct sctp_timer addr_wq_timer;
230 * Here we have all the relevant information for each SCTP entity created. We
231 * will need to modify this as approprate. We also need to figure out how to
232 * access /dev/random.
235 unsigned int time_of_secret_change; /* number of seconds from
237 uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS];
238 unsigned int size_of_a_cookie;
240 unsigned int sctp_timeoutticks[SCTP_NUM_TMRS];
241 unsigned int sctp_minrto;
242 unsigned int sctp_maxrto;
243 unsigned int initial_rto;
244 int initial_init_rto_max;
246 unsigned int sctp_sack_freq;
247 uint32_t sctp_sws_sender;
248 uint32_t sctp_sws_receiver;
250 /* authentication related fields */
251 struct sctp_keyhead shared_keys;
252 sctp_auth_chklist_t *local_auth_chunks;
253 sctp_hmaclist_t *local_hmacs;
254 uint16_t default_keyid;
256 /* various thresholds */
257 /* Max times I will init at a guy */
258 uint16_t max_init_times;
260 /* Max times I will send before we consider someone dead */
261 uint16_t max_send_times;
263 uint16_t def_net_failure;
265 /* number of streams to pre-open on a association */
266 uint16_t pre_open_stream_count;
267 uint16_t max_open_streams_intome;
269 /* random number generator */
270 uint32_t random_counter;
271 uint8_t random_numbers[SCTP_SIGNATURE_ALOC_SIZE];
272 uint8_t random_store[SCTP_SIGNATURE_ALOC_SIZE];
275 * This timer is kept running per endpoint. When it fires it will
276 * change the secret key. The default is once a hour
278 struct sctp_timer signature_change;
282 uint32_t initial_sequence_debug;
283 uint32_t adaptation_layer_indicator;
286 char current_secret_number;
287 char last_secret_number;
290 #ifndef SCTP_ALIGNMENT
291 #define SCTP_ALIGNMENT 32
295 #define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1)
298 #define sctp_lport ip_inp.inp.inp_lport
302 * put an inpcb in front of it all, kind of a waste but we need to
303 * for compatability with all the other stuff.
307 char align[(sizeof(struct in6pcb) + SCTP_ALIGNM1) &
312 /* Socket buffer lock protects read_queue and of course sb_cc */
313 struct sctp_readhead read_queue;
315 LIST_ENTRY(sctp_inpcb) sctp_list; /* lists all endpoints */
316 /* hash of all endpoints for model */
317 LIST_ENTRY(sctp_inpcb) sctp_hash;
318 /* count of local addresses bound, 0 if bound all */
321 /* list of addrs in use by the EP, NULL if bound-all */
322 struct sctpladdr sctp_addr_list;
324 * used for source address selection rotation when we are subset
327 struct sctp_laddr *next_addr_touse;
329 /* back pointer to our socket */
330 struct socket *sctp_socket;
331 uint32_t sctp_flags; /* INP state flag set */
332 uint32_t sctp_features; /* Feature flags */
333 struct sctp_pcb sctp_ep;/* SCTP ep data */
334 /* head of the hash of all associations */
335 struct sctpasochead *sctp_tcbhash;
336 u_long sctp_hashmark;
337 /* head of the list of all associations */
338 struct sctpasochead sctp_asoc_list;
339 #ifdef SCTP_TRACK_FREED_ASOCS
340 struct sctpasochead sctp_asoc_free_list;
342 struct sctp_iterator *inp_starting_point_for_iterator;
343 uint32_t sctp_frag_point;
344 uint32_t partial_delivery_point;
345 uint32_t sctp_context;
346 struct sctp_sndrcvinfo def_send;
348 * These three are here for the sosend_dgram
349 * (pkt, pkt_last and control).
350 * routine. However, I don't think anyone in
351 * the current FreeBSD kernel calls this. So
352 * they are candidates with sctp_sendm for
355 struct mbuf *pkt, *pkt_last;
356 struct mbuf *control;
358 struct mtx inp_create_mtx;
359 struct mtx inp_rdata_mtx;
362 uint32_t def_table_id;
363 uint32_t total_sends;
364 uint32_t total_recvs;
365 uint32_t last_abort_code;
366 uint32_t total_nospaces;
370 struct socket *sctp_socket; /* back pointer to socket */
371 struct sctp_inpcb *sctp_ep; /* back pointer to ep */
372 LIST_ENTRY(sctp_tcb) sctp_tcbhash; /* next link in hash
374 LIST_ENTRY(sctp_tcb) sctp_tcblist; /* list of all of the
376 LIST_ENTRY(sctp_tcb) sctp_tcbrestarhash; /* next link in restart
378 LIST_ENTRY(sctp_tcb) sctp_asocs; /* vtag hash list */
379 struct sctp_block_entry *block_entry; /* pointer locked by socket
381 struct sctp_association asoc;
383 * freed_by_sorcv_sincelast is protected by the sockbuf_lock NOT the
384 * tcb_lock. Its special in this way to help avoid extra mutex calls
385 * in the reading of data.
387 uint32_t freed_by_sorcv_sincelast;
388 uint32_t total_sends;
389 uint32_t total_recvs;
390 int freed_from_where;
391 uint16_t rport; /* remote port in network format */
394 struct mtx tcb_send_mtx;
399 #include <netinet/sctp_lock_bsd.h>
404 extern struct sctp_epinfo sctppcbinfo;
406 int SCTP6_ARE_ADDR_EQUAL(struct in6_addr *a, struct in6_addr *b);
408 void sctp_fill_pcbinfo(struct sctp_pcbinfo *);
411 sctp_find_ifn(struct sctp_vrf *vrf, void *ifn, uint32_t ifn_index);
413 struct sctp_vrf *sctp_allocate_vrf(int vrfid);
415 struct sctp_vrf *sctp_find_vrf(uint32_t vrfid);
418 sctp_add_addr_to_vrf(uint32_t vrfid,
419 void *ifn, uint32_t ifn_index, uint32_t ifn_type,
421 void *ifa, struct sockaddr *addr, uint32_t ifa_flags, int dynamic_add);
423 void sctp_update_ifn_mtu(uint32_t vrf_id, uint32_t ifn_index, uint32_t mtu);
425 void sctp_free_ifn(struct sctp_ifn *sctp_ifnp);
426 void sctp_free_ifa(struct sctp_ifa *sctp_ifap);
430 sctp_del_addr_from_vrf(uint32_t vrfid, struct sockaddr *addr,
435 struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *);
437 struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int, uint32_t);
439 int sctp_inpcb_bind(struct socket *, struct sockaddr *, struct thread *);
443 sctp_findassociation_addr(struct mbuf *, int, int,
444 struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **,
445 struct sctp_nets **, uint32_t vrf_id);
448 sctp_findassociation_addr_sa(struct sockaddr *,
449 struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int, uint32_t);
452 sctp_move_pcb_and_assoc(struct sctp_inpcb *, struct sctp_inpcb *,
456 * For this call ep_addr, the to is the destination endpoint address of the
457 * peer (relative to outbound). The from field is only used if the TCP model
458 * is enabled and helps distingush amongst the subset bound (non-boundall).
459 * The TCP model MAY change the actual ep field, this is why it is passed.
462 sctp_findassociation_ep_addr(struct sctp_inpcb **,
463 struct sockaddr *, struct sctp_nets **, struct sockaddr *,
467 sctp_findassociation_ep_asocid(struct sctp_inpcb *,
471 sctp_findassociation_ep_asconf(struct mbuf *, int, int,
472 struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **);
474 int sctp_inpcb_alloc(struct socket *);
476 int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id);
478 void sctp_inpcb_free(struct sctp_inpcb *, int, int);
481 sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *,
482 int, int *, uint32_t, uint32_t);
484 int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int);
487 sctp_add_vtag_to_timewait(struct sctp_inpcb *, uint32_t, uint32_t);
489 void sctp_add_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *, uint32_t);
491 int sctp_insert_laddr(struct sctpladdr *, struct sctp_ifa *, uint32_t);
493 void sctp_remove_laddr(struct sctp_laddr *);
495 void sctp_del_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *);
497 void sctp_set_initial_cc_param(struct sctp_tcb *, struct sctp_nets *net);
500 int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, int, int);
502 void sctp_remove_net(struct sctp_tcb *, struct sctp_nets *);
504 int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *);
506 void sctp_pcb_init(void);
508 void sctp_add_local_addr_assoc(struct sctp_tcb *, struct sctp_ifa *, int);
510 void sctp_del_local_addr_assoc(struct sctp_tcb *, struct sctp_ifa *);
513 sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int,
514 int, struct sctphdr *, struct sockaddr *);
517 sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *,
520 int sctp_is_vtag_good(struct sctp_inpcb *, uint32_t, struct timeval *);
522 /* void sctp_drain(void); */
524 int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *);
527 * Null in last arg inpcb indicate run on ALL ep's. Specific inp in last arg
528 * indicates run on ONLY assoc's of the specified endpoint.
531 sctp_initiate_iterator(inp_func inpf,
542 #endif /* !__sctp_pcb_h__ */