167 	asoc->peer.rwnd = SCTP_DEFAULT_MAXWINDOW;  in sctp_association_init()
203 	INIT_LIST_HEAD(&asoc->peer.transport_addr_list);  in sctp_association_init()
216 	asoc->peer.sack_needed = 1;  in sctp_association_init()
217 	asoc->peer.sack_generation = 1;  in sctp_association_init()
237 	/* Assume that peer would support both address types unless we are  in sctp_association_init()
240 	asoc->peer.ipv4_address = 1;  in sctp_association_init()
242 		asoc->peer.ipv6_address = 1;  in sctp_association_init()
347 	sctp_tsnmap_free(&asoc->peer.tsn_map);  in sctp_association_free()
368 	/* Free peer's cached cookie. */  in sctp_association_free()
369 	kfree(asoc->peer.cookie);  in sctp_association_free()
370 	kfree(asoc->peer.peer_random);  in sctp_association_free()
371 	kfree(asoc->peer.peer_chunks);  in sctp_association_free()
372 	kfree(asoc->peer.peer_hmacs);  in sctp_association_free()
375 	list_for_each_safe(pos, temp, &asoc->peer.transport_addr_list) {  in sctp_association_free()
382 	asoc->peer.transport_count = 0;  in sctp_association_free()
421 /* Change the primary destination address for the peer. */
430 	if (asoc->peer.primary_path != NULL &&  in sctp_assoc_set_primary()
431 	    asoc->peer.primary_path != transport)  in sctp_assoc_set_primary()
434 	asoc->peer.primary_path = transport;  in sctp_assoc_set_primary()
439 	memcpy(&asoc->peer.primary_addr, &transport->ipaddr,  in sctp_assoc_set_primary()
447 		asoc->peer.active_path = transport;  in sctp_assoc_set_primary()
482 			struct sctp_transport *peer)  in sctp_assoc_rm_peer()  argument
489 		 __func__, asoc, &peer->ipaddr.sa);  in sctp_assoc_rm_peer()
492 	 * to the next peer before removing this peer from the list.  in sctp_assoc_rm_peer()
494 	if (asoc->peer.retran_path == peer)  in sctp_assoc_rm_peer()
497 	/* Remove this peer from the list. */  in sctp_assoc_rm_peer()
498 	list_del_rcu(&peer->transports);  in sctp_assoc_rm_peer()
499 	/* Remove this peer from the transport hashtable */  in sctp_assoc_rm_peer()
500 	sctp_unhash_transport(peer);  in sctp_assoc_rm_peer()
503 	pos = asoc->peer.transport_addr_list.next;  in sctp_assoc_rm_peer()
506 	/* Update any entries that match the peer to be deleted. */  in sctp_assoc_rm_peer()
507 	if (asoc->peer.primary_path == peer)  in sctp_assoc_rm_peer()
509 	if (asoc->peer.active_path == peer)  in sctp_assoc_rm_peer()
510 		asoc->peer.active_path = transport;  in sctp_assoc_rm_peer()
511 	if (asoc->peer.retran_path == peer)  in sctp_assoc_rm_peer()
512 		asoc->peer.retran_path = transport;  in sctp_assoc_rm_peer()
513 	if (asoc->peer.last_data_from == peer)  in sctp_assoc_rm_peer()
514 		asoc->peer.last_data_from = transport;  in sctp_assoc_rm_peer()
517 	    asoc->strreset_chunk->transport == peer) {  in sctp_assoc_rm_peer()
527 	if (asoc->init_last_sent_to == peer)  in sctp_assoc_rm_peer()
535 	if (asoc->shutdown_last_sent_to == peer)  in sctp_assoc_rm_peer()
542 	    asoc->addip_last_asconf->transport == peer)  in sctp_assoc_rm_peer()
548 	if (!list_empty(&peer->transmitted)) {  in sctp_assoc_rm_peer()
549 		struct sctp_transport *active = asoc->peer.active_path;  in sctp_assoc_rm_peer()
552 		list_for_each_entry(ch, &peer->transmitted,  in sctp_assoc_rm_peer()
558 		list_splice_tail_init(&peer->transmitted,  in sctp_assoc_rm_peer()
572 		if (ch->transport == peer)  in sctp_assoc_rm_peer()
575 	asoc->peer.transport_count--;  in sctp_assoc_rm_peer()
577 	sctp_ulpevent_notify_peer_addr_change(peer, SCTP_ADDR_REMOVED, 0);  in sctp_assoc_rm_peer()
578 	sctp_transport_free(peer);  in sctp_assoc_rm_peer()
587 	struct sctp_transport *peer;  in sctp_assoc_add_peer()  local
600 	if (0 == asoc->peer.port)  in sctp_assoc_add_peer()
601 		asoc->peer.port = port;  in sctp_assoc_add_peer()
604 	peer = sctp_assoc_lookup_paddr(asoc, addr);  in sctp_assoc_add_peer()
605 	if (peer) {  in sctp_assoc_add_peer()
610 		if (peer->state == SCTP_UNKNOWN) {  in sctp_assoc_add_peer()
611 			peer->state = SCTP_ACTIVE;  in sctp_assoc_add_peer()
613 		return peer;  in sctp_assoc_add_peer()
616 	peer = sctp_transport_new(asoc->base.net, addr, gfp);  in sctp_assoc_add_peer()
617 	if (!peer)  in sctp_assoc_add_peer()
620 	sctp_transport_set_owner(peer, asoc);  in sctp_assoc_add_peer()
622 	/* Initialize the peer's heartbeat interval based on the  in sctp_assoc_add_peer()
625 	peer->hbinterval = asoc->hbinterval;  in sctp_assoc_add_peer()
628 	peer->pathmaxrxt = asoc->pathmaxrxt;  in sctp_assoc_add_peer()
631 	peer->pf_retrans = asoc->pf_retrans;  in sctp_assoc_add_peer()
633 	peer->ps_retrans = asoc->ps_retrans;  in sctp_assoc_add_peer()
635 	/* Initialize the peer's SACK delay timeout based on the  in sctp_assoc_add_peer()
638 	peer->sackdelay = asoc->sackdelay;  in sctp_assoc_add_peer()
639 	peer->sackfreq = asoc->sackfreq;  in sctp_assoc_add_peer()
645 			peer->flowlabel = ntohl(info & IPV6_FLOWLABEL_MASK);  in sctp_assoc_add_peer()
646 			peer->flowlabel |= SCTP_FLOWLABEL_SET_MASK;  in sctp_assoc_add_peer()
648 			peer->flowlabel = asoc->flowlabel;  in sctp_assoc_add_peer()
651 	peer->dscp = asoc->dscp;  in sctp_assoc_add_peer()
656 	peer->param_flags = asoc->param_flags;  in sctp_assoc_add_peer()
659 	sctp_transport_route(peer, NULL, sp);  in sctp_assoc_add_peer()
662 	 * initialize the association PMTU to the peer's PMTU.  in sctp_assoc_add_peer()
664 	 * peer's PMTU, reset the association PMTU to the new peer's PMTU.  in sctp_assoc_add_peer()
667 				  min_t(int, peer->pathmtu, asoc->pathmtu) :  in sctp_assoc_add_peer()
668 				  peer->pathmtu);  in sctp_assoc_add_peer()
670 	peer->pmtu_pending = 0;  in sctp_assoc_add_peer()
672 	/* The asoc->peer.port might not be meaningful yet, but  in sctp_assoc_add_peer()
675 	sctp_packet_init(&peer->packet, peer, asoc->base.bind_addr.port,  in sctp_assoc_add_peer()
676 			 asoc->peer.port);  in sctp_assoc_add_peer()
688 	peer->cwnd = min(4*asoc->pathmtu, max_t(__u32, 2*asoc->pathmtu, 4380));  in sctp_assoc_add_peer()
694 	peer->ssthresh = SCTP_DEFAULT_MAXWINDOW;  in sctp_assoc_add_peer()
696 	peer->partial_bytes_acked = 0;  in sctp_assoc_add_peer()
697 	peer->flight_size = 0;  in sctp_assoc_add_peer()
698 	peer->burst_limited = 0;  in sctp_assoc_add_peer()
701 	peer->rto = asoc->rto_initial;  in sctp_assoc_add_peer()
702 	sctp_max_rto(asoc, peer);  in sctp_assoc_add_peer()
704 	/* Set the peer's active state. */  in sctp_assoc_add_peer()
705 	peer->state = peer_state;  in sctp_assoc_add_peer()
707 	/* Add this peer into the transport hashtable */  in sctp_assoc_add_peer()
708 	if (sctp_hash_transport(peer)) {  in sctp_assoc_add_peer()
709 		sctp_transport_free(peer);  in sctp_assoc_add_peer()
714 	list_add_tail_rcu(&peer->transports, &asoc->peer.transport_addr_list);  in sctp_assoc_add_peer()
715 	asoc->peer.transport_count++;  in sctp_assoc_add_peer()
717 	sctp_ulpevent_notify_peer_addr_change(peer, SCTP_ADDR_ADDED, 0);  in sctp_assoc_add_peer()
720 	if (!asoc->peer.primary_path) {  in sctp_assoc_add_peer()
721 		sctp_assoc_set_primary(asoc, peer);  in sctp_assoc_add_peer()
722 		asoc->peer.retran_path = peer;  in sctp_assoc_add_peer()
725 	if (asoc->peer.active_path == asoc->peer.retran_path &&  in sctp_assoc_add_peer()
726 	    peer->state != SCTP_UNCONFIRMED) {  in sctp_assoc_add_peer()
727 		asoc->peer.retran_path = peer;  in sctp_assoc_add_peer()
730 	return peer;  in sctp_assoc_add_peer()
741 	list_for_each_safe(pos, temp, &asoc->peer.transport_addr_list) {  in sctp_assoc_del_peer()
744 			/* Do book keeping for removing the peer and free it. */  in sctp_assoc_del_peer()
758 	/* Cycle through all transports searching for a peer address. */  in sctp_assoc_lookup_paddr()
760 	list_for_each_entry(t, &asoc->peer.transport_addr_list,  in sctp_assoc_lookup_paddr()
776 	list_for_each_entry_safe(t, temp, &asoc->peer.transport_addr_list,  in sctp_assoc_del_nonprimary_peers()
941 	active = asoc->peer.active_path;  in sctp_assoc_lookup_tsn()
953 	list_for_each_entry(transport, &asoc->peer.transport_addr_list,  in sctp_assoc_lookup_tsn()
1021 		 *    been sent to the peer during the association setup.  It  in sctp_assoc_bh_rcv()
1032 			asoc->peer.last_data_from = chunk->transport;  in sctp_assoc_bh_rcv()
1101 	/* Copy in new parameters of peer. */  in sctp_assoc_update()
1103 	asoc->peer.rwnd = new->peer.rwnd;  in sctp_assoc_update()
1104 	asoc->peer.sack_needed = new->peer.sack_needed;  in sctp_assoc_update()
1105 	asoc->peer.auth_capable = new->peer.auth_capable;  in sctp_assoc_update()
1106 	asoc->peer.i = new->peer.i;  in sctp_assoc_update()
1108 	if (!sctp_tsnmap_init(&asoc->peer.tsn_map, SCTP_TSN_MAP_INITIAL,  in sctp_assoc_update()
1109 			      asoc->peer.i.initial_tsn, GFP_ATOMIC))  in sctp_assoc_update()
1112 	/* Remove any peer addresses not present in the new association. */  in sctp_assoc_update()
1113 	list_for_each_safe(pos, temp, &asoc->peer.transport_addr_list) {  in sctp_assoc_update()
1126 	 * current next_tsn in case data sent to peer  in sctp_assoc_update()
1135 		 * and peer's streams.  in sctp_assoc_update()
1152 		/* Add any peer addresses from the new association. */  in sctp_assoc_update()
1153 		list_for_each_entry(trans, &new->peer.transport_addr_list,  in sctp_assoc_update()
1171 	/* SCTP-AUTH: Save the peer parameters from the new associations  in sctp_assoc_update()
1174 	kfree(asoc->peer.peer_random);  in sctp_assoc_update()
1175 	asoc->peer.peer_random = new->peer.peer_random;  in sctp_assoc_update()
1176 	new->peer.peer_random = NULL;  in sctp_assoc_update()
1178 	kfree(asoc->peer.peer_chunks);  in sctp_assoc_update()
1179 	asoc->peer.peer_chunks = new->peer.peer_chunks;  in sctp_assoc_update()
1180 	new->peer.peer_chunks = NULL;  in sctp_assoc_update()
1182 	kfree(asoc->peer.peer_hmacs);  in sctp_assoc_update()
1183 	asoc->peer.peer_hmacs = new->peer.peer_hmacs;  in sctp_assoc_update()
1184 	new->peer.peer_hmacs = NULL;  in sctp_assoc_update()
1270 	struct sctp_transport *trans = asoc->peer.retran_path;  in sctp_assoc_update_retran_path()
1274 	if (asoc->peer.transport_count == 1)  in sctp_assoc_update_retran_path()
1279 	if (asoc->peer.active_path == asoc->peer.retran_path &&  in sctp_assoc_update_retran_path()
1280 	    asoc->peer.active_path->state == SCTP_ACTIVE)  in sctp_assoc_update_retran_path()
1287 		if (&trans->transports == &asoc->peer.transport_addr_list)  in sctp_assoc_update_retran_path()
1296 		if (trans == asoc->peer.retran_path)  in sctp_assoc_update_retran_path()
1300 	asoc->peer.retran_path = trans_next;  in sctp_assoc_update_retran_path()
1303 		 __func__, asoc, &asoc->peer.retran_path->ipaddr.sa);  in sctp_assoc_update_retran_path()
1312 	list_for_each_entry(trans, &asoc->peer.transport_addr_list,  in sctp_select_active_and_retran_path()
1346 	if ((asoc->peer.primary_path->state == SCTP_ACTIVE ||  in sctp_select_active_and_retran_path()
1347 	     asoc->peer.primary_path->state == SCTP_UNKNOWN) &&  in sctp_select_active_and_retran_path()
1348 	     asoc->peer.primary_path != trans_pri) {  in sctp_select_active_and_retran_path()
1350 		trans_pri = asoc->peer.primary_path;  in sctp_select_active_and_retran_path()
1364 		trans_pri = sctp_trans_elect_best(asoc->peer.active_path, trans_pf);  in sctp_select_active_and_retran_path()
1369 	asoc->peer.active_path = trans_pri;  in sctp_select_active_and_retran_path()
1370 	asoc->peer.retran_path = trans_sec;  in sctp_select_active_and_retran_path()
1382 		return asoc->peer.active_path;  in sctp_assoc_choose_alter_transport()
1384 		if (last_sent_to == asoc->peer.retran_path)  in sctp_assoc_choose_alter_transport()
1387 		return asoc->peer.retran_path;  in sctp_assoc_choose_alter_transport()
1428 	list_for_each_entry(t, &asoc->peer.transport_addr_list, transports) {  in sctp_assoc_sync_pmtu()
1441 /* Should we send a SACK to update our peer? */
1511 		asoc->peer.sack_needed = 0;  in sctp_assoc_rwnd_increase()
1563  * local endpoint and the remote peer.
1577 	if (asoc->peer.ipv4_address)  in sctp_assoc_set_bind_addr_from_ep()
1579 	if (asoc->peer.ipv6_address)  in sctp_assoc_set_bind_addr_from_ep()
1675 	 * the "Peer-Sequence-Number".  in sctp_assoc_clean_asconf_ack_cache()
1680 				htonl(asoc->peer.addip_serial))  in sctp_assoc_clean_asconf_ack_cache()