Lines Matching refs:asoc
69 static struct sctp_association *sctp_association_init(struct sctp_association *asoc,
82 memset(asoc, 0, sizeof(struct sctp_association));
85 asoc->ep = (struct sctp_endpoint *)ep;
86 sctp_endpoint_hold(asoc->ep);
89 asoc->base.sk = (struct sock *)sk;
90 sock_hold(asoc->base.sk);
93 asoc->base.type = SCTP_EP_TYPE_ASSOCIATION;
96 atomic_set(&asoc->base.refcnt, 1);
97 asoc->base.dead = 0;
98 asoc->base.malloced = 0;
101 sctp_bind_addr_init(&asoc->base.bind_addr, ep->base.bind_addr.port);
102 rwlock_init(&asoc->base.addr_lock);
104 asoc->state = SCTP_STATE_CLOSED;
109 asoc->cookie_life.tv_sec = sp->assocparams.sasoc_cookie_life / 1000;
110 asoc->cookie_life.tv_usec = (sp->assocparams.sasoc_cookie_life % 1000)
112 asoc->frag_point = 0;
117 asoc->max_retrans = sp->assocparams.sasoc_asocmaxrxt;
118 asoc->rto_initial = msecs_to_jiffies(sp->rtoinfo.srto_initial);
119 asoc->rto_max = msecs_to_jiffies(sp->rtoinfo.srto_max);
120 asoc->rto_min = msecs_to_jiffies(sp->rtoinfo.srto_min);
122 asoc->overall_error_count = 0;
127 asoc->hbinterval = msecs_to_jiffies(sp->hbinterval);
130 asoc->pathmaxrxt = sp->pathmaxrxt;
133 asoc->pathmtu = sp->pathmtu;
136 asoc->sackdelay = msecs_to_jiffies(sp->sackdelay);
141 asoc->param_flags = sp->param_flags;
146 asoc->max_burst = sp->max_burst;
149 asoc->timeouts[SCTP_EVENT_TIMEOUT_NONE] = 0;
150 asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_COOKIE] = asoc->rto_initial;
151 asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_INIT] = asoc->rto_initial;
152 asoc->timeouts[SCTP_EVENT_TIMEOUT_T2_SHUTDOWN] = asoc->rto_initial;
153 asoc->timeouts[SCTP_EVENT_TIMEOUT_T3_RTX] = 0;
154 asoc->timeouts[SCTP_EVENT_TIMEOUT_T4_RTO] = 0;
160 asoc->timeouts[SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD]
161 = 5 * asoc->rto_max;
163 asoc->timeouts[SCTP_EVENT_TIMEOUT_HEARTBEAT] = 0;
164 asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] = asoc->sackdelay;
165 asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE] =
170 init_timer(&asoc->timers[i]);
171 asoc->timers[i].function = sctp_timer_events[i];
172 asoc->timers[i].data = (unsigned long) asoc;
179 asoc->c.sinit_max_instreams = sp->initmsg.sinit_max_instreams;
180 asoc->c.sinit_num_ostreams = sp->initmsg.sinit_num_ostreams;
181 asoc->max_init_attempts = sp->initmsg.sinit_max_attempts;
183 asoc->max_init_timeo =
189 asoc->ssnmap = NULL;
197 asoc->rwnd = SCTP_DEFAULT_MINWINDOW;
199 asoc->rwnd = sk->sk_rcvbuf/2;
201 asoc->a_rwnd = asoc->rwnd;
203 asoc->rwnd_over = 0;
206 asoc->peer.rwnd = SCTP_DEFAULT_MAXWINDOW;
209 asoc->sndbuf_used = 0;
212 atomic_set(&asoc->rmem_alloc, 0);
214 init_waitqueue_head(&asoc->wait);
216 asoc->c.my_vtag = sctp_generate_tag(ep);
217 asoc->peer.i.init_tag = 0; /* INIT needs a vtag of 0. */
218 asoc->c.peer_vtag = 0;
219 asoc->c.my_ttag = 0;
220 asoc->c.peer_ttag = 0;
221 asoc->c.my_port = ep->base.bind_addr.port;
223 asoc->c.initial_tsn = sctp_generate_tsn(ep);
225 asoc->next_tsn = asoc->c.initial_tsn;
227 asoc->ctsn_ack_point = asoc->next_tsn - 1;
228 asoc->adv_peer_ack_point = asoc->ctsn_ack_point;
229 asoc->highest_sacked = asoc->ctsn_ack_point;
230 asoc->last_cwr_tsn = asoc->ctsn_ack_point;
231 asoc->unack_data = 0;
243 asoc->addip_serial = asoc->c.initial_tsn;
245 INIT_LIST_HEAD(&asoc->addip_chunk_list);
248 INIT_LIST_HEAD(&asoc->peer.transport_addr_list);
249 asoc->peer.transport_count = 0;
262 asoc->peer.sack_needed = 1;
267 asoc->peer.asconf_capable = 1;
270 sctp_inq_init(&asoc->base.inqueue);
271 sctp_inq_set_th_handler(&asoc->base.inqueue, sctp_assoc_bh_rcv);
274 sctp_outq_init(asoc, &asoc->outqueue);
276 if (!sctp_ulpq_init(&asoc->ulpq, asoc))
280 sctp_tsnmap_init(&asoc->peer.tsn_map, SCTP_TSN_MAP_SIZE, 0);
282 asoc->need_ecne = 0;
284 asoc->assoc_id = 0;
289 asoc->peer.ipv4_address = 1;
290 asoc->peer.ipv6_address = 1;
291 INIT_LIST_HEAD(&asoc->asocs);
293 asoc->autoclose = sp->autoclose;
295 asoc->default_stream = sp->default_stream;
296 asoc->default_ppid = sp->default_ppid;
297 asoc->default_flags = sp->default_flags;
298 asoc->default_context = sp->default_context;
299 asoc->default_timetolive = sp->default_timetolive;
300 asoc->default_rcv_context = sp->default_rcv_context;
302 return asoc;
305 sctp_endpoint_put(asoc->ep);
306 sock_put(asoc->base.sk);
316 struct sctp_association *asoc;
318 asoc = t_new(struct sctp_association, gfp);
319 if (!asoc)
322 if (!sctp_association_init(asoc, ep, sk, scope, gfp))
325 asoc->base.malloced = 1;
327 SCTP_DEBUG_PRINTK("Created asoc %p\n", asoc);
329 return asoc;
332 kfree(asoc);
340 void sctp_association_free(struct sctp_association *asoc)
342 struct sock *sk = asoc->base.sk;
350 if (!asoc->temp) {
351 list_del(&asoc->asocs);
363 asoc->base.dead = 1;
366 sctp_outq_free(&asoc->outqueue);
369 sctp_ulpq_free(&asoc->ulpq);
372 sctp_inq_free(&asoc->base.inqueue);
375 sctp_ssnmap_free(asoc->ssnmap);
378 sctp_bind_addr_free(&asoc->base.bind_addr);
386 if (timer_pending(&asoc->timers[i]) &&
387 del_timer(&asoc->timers[i]))
388 sctp_association_put(asoc);
392 kfree(asoc->peer.cookie);
395 list_for_each_safe(pos, temp, &asoc->peer.transport_addr_list) {
401 asoc->peer.transport_count = 0;
404 if (asoc->addip_last_asconf_ack)
405 sctp_chunk_free(asoc->addip_last_asconf_ack);
408 if (asoc->addip_last_asconf)
409 sctp_chunk_free(asoc->addip_last_asconf);
411 sctp_association_put(asoc);
415 static void sctp_association_destroy(struct sctp_association *asoc)
417 SCTP_ASSERT(asoc->base.dead, "Assoc is not dead", return);
419 sctp_endpoint_put(asoc->ep);
420 sock_put(asoc->base.sk);
422 if (asoc->assoc_id != 0) {
424 idr_remove(&sctp_assocs_id, asoc->assoc_id);
428 BUG_TRAP(!atomic_read(&asoc->rmem_alloc));
430 if (asoc->base.malloced) {
431 kfree(asoc);
437 void sctp_assoc_set_primary(struct sctp_association *asoc,
440 asoc->peer.primary_path = transport;
443 memcpy(&asoc->peer.primary_addr, &transport->ipaddr,
451 asoc->peer.active_path = transport;
475 transport->cacc.next_tsn_at_change = asoc->next_tsn;
479 void sctp_assoc_rm_peer(struct sctp_association *asoc,
487 asoc,
494 if (asoc->peer.retran_path == peer)
495 sctp_assoc_update_retran_path(asoc);
500 /* Get the first transport of asoc. */
501 pos = asoc->peer.transport_addr_list.next;
505 if (asoc->peer.primary_path == peer)
506 sctp_assoc_set_primary(asoc, transport);
507 if (asoc->peer.active_path == peer)
508 asoc->peer.active_path = transport;
509 if (asoc->peer.last_data_from == peer)
510 asoc->peer.last_data_from = transport;
517 if (asoc->init_last_sent_to == peer)
518 asoc->init_last_sent_to = NULL;
520 asoc->peer.transport_count--;
526 struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
535 sp = sctp_sk(asoc->base.sk);
542 asoc,
548 if (0 == asoc->peer.port)
549 asoc->peer.port = port;
552 peer = sctp_assoc_lookup_paddr(asoc, addr);
567 sctp_transport_set_owner(peer, asoc);
572 peer->hbinterval = asoc->hbinterval;
575 peer->pathmaxrxt = asoc->pathmaxrxt;
580 peer->sackdelay = asoc->sackdelay;
585 peer->param_flags = asoc->param_flags;
590 else if (asoc->pathmtu)
591 peer->pathmtu = asoc->pathmtu;
600 if (asoc->pathmtu)
601 asoc->pathmtu = min_t(int, peer->pathmtu, asoc->pathmtu);
603 asoc->pathmtu = peer->pathmtu;
606 "%d\n", asoc, asoc->pathmtu);
608 asoc->frag_point = sctp_frag_point(sp, asoc->pathmtu);
610 /* The asoc->peer.port might not be meaningful yet, but
613 sctp_packet_init(&peer->packet, peer, asoc->base.bind_addr.port,
614 asoc->peer.port);
626 peer->cwnd = min(4*asoc->pathmtu, max_t(__u32, 2*asoc->pathmtu, 4380));
638 peer->rto = asoc->rto_initial;
643 /* Attach the remote transport to our asoc. */
644 list_add_tail(&peer->transports, &asoc->peer.transport_addr_list);
645 asoc->peer.transport_count++;
648 if (!asoc->peer.primary_path) {
649 sctp_assoc_set_primary(asoc, peer);
650 asoc->peer.retran_path = peer;
653 if (asoc->peer.active_path == asoc->peer.retran_path) {
654 asoc->peer.retran_path = peer;
661 void sctp_assoc_del_peer(struct sctp_association *asoc,
668 list_for_each_safe(pos, temp, &asoc->peer.transport_addr_list) {
672 sctp_assoc_rm_peer(asoc, transport);
680 const struct sctp_association *asoc,
688 list_for_each(pos, &asoc->peer.transport_addr_list) {
701 void sctp_assoc_control_transport(struct sctp_association *asoc,
743 event = sctp_ulpevent_make_peer_addr_change(asoc, &addr,
746 sctp_ulpq_tail_event(&asoc->ulpq, event);
758 list_for_each(pos, &asoc->peer.transport_addr_list) {
782 if (((asoc->peer.primary_path->state == SCTP_ACTIVE) ||
783 (asoc->peer.primary_path->state == SCTP_UNKNOWN)) &&
784 first != asoc->peer.primary_path) {
786 first = asoc->peer.primary_path;
793 first = asoc->peer.primary_path;
794 second = asoc->peer.primary_path;
798 asoc->peer.active_path = first;
799 asoc->peer.retran_path = second;
803 void sctp_association_hold(struct sctp_association *asoc)
805 atomic_inc(&asoc->base.refcnt);
811 void sctp_association_put(struct sctp_association *asoc)
813 if (atomic_dec_and_test(&asoc->base.refcnt))
814 sctp_association_destroy(asoc);
820 __u32 sctp_association_get_next_tsn(struct sctp_association *asoc)
827 __u32 retval = asoc->next_tsn;
828 asoc->next_tsn++;
829 asoc->unack_data++;
849 struct sctp_chunk *sctp_get_ecne_prepend(struct sctp_association *asoc)
856 if (asoc->need_ecne)
857 chunk = sctp_make_ecne(asoc, asoc->last_ecne_tsn);
867 struct sctp_transport *sctp_assoc_lookup_tsn(struct sctp_association *asoc,
890 active = asoc->peer.active_path;
902 list_for_each(pos, &asoc->peer.transport_addr_list) {
921 struct sctp_transport *sctp_assoc_is_match(struct sctp_association *asoc,
927 sctp_read_lock(&asoc->base.addr_lock);
929 if ((htons(asoc->base.bind_addr.port) == laddr->v4.sin_port) &&
930 (htons(asoc->peer.port) == paddr->v4.sin_port)) {
931 transport = sctp_assoc_lookup_paddr(asoc, paddr);
935 if (sctp_bind_addr_match(&asoc->base.bind_addr, laddr,
936 sctp_sk(asoc->base.sk)))
942 sctp_read_unlock(&asoc->base.addr_lock);
949 struct sctp_association *asoc =
961 ep = asoc->ep;
962 sk = asoc->base.sk;
964 inqueue = &asoc->base.inqueue;
965 sctp_association_hold(asoc);
967 state = asoc->state;
974 asoc->peer.last_data_from = chunk->transport;
983 state, ep, asoc, chunk, GFP_ATOMIC);
988 if (asoc->base.dead)
995 sctp_association_put(asoc);
1030 void sctp_assoc_update(struct sctp_association *asoc,
1037 asoc->c = new->c;
1038 asoc->peer.rwnd = new->peer.rwnd;
1039 asoc->peer.sack_needed = new->peer.sack_needed;
1040 asoc->peer.i = new->peer.i;
1041 sctp_tsnmap_init(&asoc->peer.tsn_map, SCTP_TSN_MAP_SIZE,
1042 asoc->peer.i.initial_tsn);
1045 list_for_each_safe(pos, temp, &asoc->peer.transport_addr_list) {
1048 sctp_assoc_del_peer(asoc, &trans->ipaddr);
1050 if (asoc->state >= SCTP_STATE_ESTABLISHED)
1059 if (asoc->state >= SCTP_STATE_ESTABLISHED) {
1060 asoc->next_tsn = new->next_tsn;
1061 asoc->ctsn_ack_point = new->ctsn_ack_point;
1062 asoc->adv_peer_ack_point = new->adv_peer_ack_point;
1067 sctp_ssnmap_clear(asoc->ssnmap);
1073 sctp_ulpq_flush(&asoc->ulpq);
1079 asoc->overall_error_count = 0;
1086 if (!sctp_assoc_lookup_paddr(asoc, &trans->ipaddr))
1087 sctp_assoc_add_peer(asoc, &trans->ipaddr,
1091 asoc->ctsn_ack_point = asoc->next_tsn - 1;
1092 asoc->adv_peer_ack_point = asoc->ctsn_ack_point;
1093 if (!asoc->ssnmap) {
1095 asoc->ssnmap = new->ssnmap;
1099 if (!asoc->assoc_id) {
1103 sctp_assoc_set_id(asoc, GFP_ATOMIC);
1113 void sctp_assoc_update_retran_path(struct sctp_association *asoc)
1116 struct list_head *head = &asoc->peer.transport_addr_list;
1120 t = asoc->peer.retran_path;
1150 if (t == asoc->peer.retran_path) {
1156 asoc->peer.retran_path = t;
1161 asoc,
1168 struct sctp_association *asoc)
1175 if (!asoc->init_last_sent_to) {
1176 t = asoc->peer.active_path;
1178 if (asoc->init_last_sent_to == asoc->peer.retran_path)
1179 sctp_assoc_update_retran_path(asoc);
1180 t = asoc->peer.retran_path;
1186 asoc,
1195 struct sctp_association *asoc)
1201 if (!asoc->shutdown_last_sent_to)
1202 return asoc->peer.active_path;
1204 if (asoc->shutdown_last_sent_to == asoc->peer.retran_path)
1205 sctp_assoc_update_retran_path(asoc);
1206 return asoc->peer.retran_path;
1214 void sctp_assoc_sync_pmtu(struct sctp_association *asoc)
1220 if (!asoc)
1224 list_for_each(pos, &asoc->peer.transport_addr_list) {
1235 struct sctp_sock *sp = sctp_sk(asoc->base.sk);
1236 asoc->pathmtu = pmtu;
1237 asoc->frag_point = sctp_frag_point(sp, pmtu);
1240 SCTP_DEBUG_PRINTK("%s: asoc:%p, pmtu:%d, frag_point:%d\n",
1241 __FUNCTION__, asoc, asoc->pathmtu, asoc->frag_point);
1245 static inline int sctp_peer_needs_update(struct sctp_association *asoc)
1247 switch (asoc->state) {
1252 if ((asoc->rwnd > asoc->a_rwnd) &&
1253 ((asoc->rwnd - asoc->a_rwnd) >=
1254 min_t(__u32, (asoc->base.sk->sk_rcvbuf >> 1), asoc->pathmtu)))
1263 /* Increase asoc's rwnd by len and send any window update SACK if needed. */
1264 void sctp_assoc_rwnd_increase(struct sctp_association *asoc, unsigned len)
1269 if (asoc->rwnd_over) {
1270 if (asoc->rwnd_over >= len) {
1271 asoc->rwnd_over -= len;
1273 asoc->rwnd += (len - asoc->rwnd_over);
1274 asoc->rwnd_over = 0;
1277 asoc->rwnd += len;
1280 SCTP_DEBUG_PRINTK("%s: asoc %p rwnd increased by %d to (%u, %u) "
1281 "- %u\n", __FUNCTION__, asoc, len, asoc->rwnd,
1282 asoc->rwnd_over, asoc->a_rwnd);
1289 if (sctp_peer_needs_update(asoc)) {
1290 asoc->a_rwnd = asoc->rwnd;
1291 SCTP_DEBUG_PRINTK("%s: Sending window update SACK- asoc: %p "
1293 asoc, asoc->rwnd, asoc->a_rwnd);
1294 sack = sctp_make_sack(asoc);
1298 asoc->peer.sack_needed = 0;
1300 sctp_outq_tail(&asoc->outqueue, sack);
1303 timer = &asoc->timers[SCTP_EVENT_TIMEOUT_SACK];
1305 sctp_association_put(asoc);
1309 /* Decrease asoc's rwnd by len. */
1310 void sctp_assoc_rwnd_decrease(struct sctp_association *asoc, unsigned len)
1312 SCTP_ASSERT(asoc->rwnd, "rwnd zero", return);
1313 SCTP_ASSERT(!asoc->rwnd_over, "rwnd_over not zero", return);
1314 if (asoc->rwnd >= len) {
1315 asoc->rwnd -= len;
1317 asoc->rwnd_over = len - asoc->rwnd;
1318 asoc->rwnd = 0;
1320 SCTP_DEBUG_PRINTK("%s: asoc %p rwnd decreased by %d to (%u, %u)\n",
1321 __FUNCTION__, asoc, len, asoc->rwnd,
1322 asoc->rwnd_over);
1328 int sctp_assoc_set_bind_addr_from_ep(struct sctp_association *asoc,
1337 scope = sctp_scope(&asoc->peer.active_path->ipaddr);
1338 flags = (PF_INET6 == asoc->base.sk->sk_family) ? SCTP_ADDR6_ALLOWED : 0;
1339 if (asoc->peer.ipv4_address)
1341 if (asoc->peer.ipv6_address)
1344 return sctp_bind_addr_copy(&asoc->base.bind_addr,
1345 &asoc->ep->base.bind_addr,
1350 int sctp_assoc_set_bind_addr_from_cookie(struct sctp_association *asoc,
1358 return sctp_raw_to_bind_addrs(&asoc->base.bind_addr, raw, var_size3,
1359 asoc->ep->base.bind_addr.port, gfp);
1363 int sctp_assoc_lookup_laddr(struct sctp_association *asoc,
1368 sctp_read_lock(&asoc->base.addr_lock);
1369 if ((asoc->base.bind_addr.port == ntohs(laddr->v4.sin_port)) &&
1370 sctp_bind_addr_match(&asoc->base.bind_addr, laddr,
1371 sctp_sk(asoc->base.sk))) {
1378 sctp_read_unlock(&asoc->base.addr_lock);
1383 int sctp_assoc_set_id(struct sctp_association *asoc, gfp_t gfp)
1392 error = idr_get_new_above(&sctp_assocs_id, (void *)asoc,
1400 asoc->assoc_id = (sctp_assoc_t) assoc_id;