net/sctp/associola.c

206 	/* Make an empty list of remote transport addresses.  */
317 	struct sctp_transport *transport;
375 	/* Release the transport structures. */
377 		transport = list_entry(pos, struct sctp_transport, transports);
379 		sctp_unhash_transport(transport);
380 		sctp_transport_free(transport);
424 			    struct sctp_transport *transport)
432 	    asoc->peer.primary_path != transport)
435 	asoc->peer.primary_path = transport;
436 	sctp_ulpevent_notify_peer_addr_change(transport,
440 	memcpy(&asoc->peer.primary_addr, &transport->ipaddr,
446 	if ((transport->state == SCTP_ACTIVE) ||
447 	    (transport->state == SCTP_UNKNOWN))
448 		asoc->peer.active_path = transport;
467 	if (transport->cacc.changeover_active)
468 		transport->cacc.cycling_changeover = changeover;
473 	transport->cacc.changeover_active = changeover;
478 	transport->cacc.next_tsn_at_change = asoc->next_tsn;
481 /* Remove a transport from an association.  */
485 	struct sctp_transport *transport;
500 	/* Remove this peer from the transport hashtable */
503 	/* Get the first transport of asoc. */
505 	transport = list_entry(pos, struct sctp_transport, transports);
509 		sctp_assoc_set_primary(asoc, transport);
511 		asoc->peer.active_path = transport;
513 		asoc->peer.retran_path = transport;
515 		asoc->peer.last_data_from = transport;
518 	    asoc->strreset_chunk->transport == peer) {
519 		asoc->strreset_chunk->transport = transport;
520 		sctp_transport_reset_reconf_timer(transport);
523 	/* If we remove the transport an INIT was last sent to, set it to
526 	 * transport, maintaining the cycle.
531 	/* If we remove the transport an SHUTDOWN was last sent to, set it
534 	 * transport, maintaining the cycle.
539 	/* If we remove the transport an ASCONF was last sent to, set it to
543 	    asoc->addip_last_asconf->transport == peer)
544 		asoc->addip_last_asconf->transport = NULL;
552 		/* Reset the transport of each chunk on this list */
555 			ch->transport = NULL;
573 		if (ch->transport == peer)
574 			ch->transport = NULL;
582 /* Add a transport address to an association.  */
662 	/* Initialize the pmtu of the transport. */
665 	/* If this is the first transport addr on this association,
704 	/* Set the transport's RTO.initial value */
711 	/* Add this peer into the transport hashtable */
719 	/* Attach the remote transport to our asoc.  */
739 /* Lookup a transport by address. */
766 		/* if the current transport is not the primary one, delete it */
772 /* Engage in transport control operations.
773  * Mark the transport up or down and send a notification to the user.
777 				  struct sctp_transport *transport,
784 	/* Record the transition on the transport.  */
791 		if (transport->state == SCTP_PF &&
794 		else if (transport->state == SCTP_UNCONFIRMED &&
798 		transport->state = SCTP_ACTIVE;
799 		sctp_transport_pl_reset(transport);
803 		/* If the transport was never confirmed, do not transition it
807 		if (transport->state != SCTP_UNCONFIRMED) {
808 			transport->state = SCTP_INACTIVE;
809 			sctp_transport_pl_reset(transport);
812 			sctp_transport_dst_release(transport);
818 		transport->state = SCTP_PF;
833 		sctp_ulpevent_notify_peer_addr_change(transport,
903  * Find which transport this TSN was sent on.
910 	struct sctp_transport *transport;
922 	 * The general strategy is to search each transport's transmitted
923 	 * list.   Return which transport this TSN lives on.
943 	list_for_each_entry(transport, &asoc->peer.transport_addr_list,
946 		if (transport == active)
948 		list_for_each_entry(chunk, &transport->transmitted,
951 				match = transport;
1022 			asoc->peer.last_data_from = chunk->transport;
1030 		if (chunk->transport)
1031 			chunk->transport->last_time_heard = ktime_get();
1184  *   inactive destination transport address, before reporting
1186  *   the data to an alternate active destination transport
1203  * transport with state SCTP_ACTIVE exists, round-robin through
1245 	/* First, try a score-based selection if both transport states
1307 		/* Keep track of the best PF transport from our
1331 	 * destination transport address (and possibly source transport
1333 	 * bump the most recently used transport.]
1349 	/* If we failed to find a usable transport, just camp on the
1406  * transports. This routine is called when a transport's PMTU has changed.