net/sctp/associola.c

205 	/* Make an empty list of remote transport addresses.  */
316 	struct sctp_transport *transport;
374 	/* Release the transport structures. */
376 		transport = list_entry(pos, struct sctp_transport, transports);
378 		sctp_unhash_transport(transport);
379 		sctp_transport_free(transport);
423 			    struct sctp_transport *transport)
431 	    asoc->peer.primary_path != transport)
434 	asoc->peer.primary_path = transport;
435 	sctp_ulpevent_notify_peer_addr_change(transport,
439 	memcpy(&asoc->peer.primary_addr, &transport->ipaddr,
445 	if ((transport->state == SCTP_ACTIVE) ||
446 	    (transport->state == SCTP_UNKNOWN))
447 		asoc->peer.active_path = transport;
466 	if (transport->cacc.changeover_active)
467 		transport->cacc.cycling_changeover = changeover;
472 	transport->cacc.changeover_active = changeover;
477 	transport->cacc.next_tsn_at_change = asoc->next_tsn;
480 /* Remove a transport from an association.  */
484 	struct sctp_transport *transport;
499 	/* Remove this peer from the transport hashtable */
502 	/* Get the first transport of asoc. */
504 	transport = list_entry(pos, struct sctp_transport, transports);
508 		sctp_assoc_set_primary(asoc, transport);
510 		asoc->peer.active_path = transport;
512 		asoc->peer.retran_path = transport;
514 		asoc->peer.last_data_from = transport;
517 	    asoc->strreset_chunk->transport == peer) {
518 		asoc->strreset_chunk->transport = transport;
519 		sctp_transport_reset_reconf_timer(transport);
522 	/* If we remove the transport an INIT was last sent to, set it to
525 	 * transport, maintaining the cycle.
530 	/* If we remove the transport an SHUTDOWN was last sent to, set it
533 	 * transport, maintaining the cycle.
538 	/* If we remove the transport an ASCONF was last sent to, set it to
542 	    asoc->addip_last_asconf->transport == peer)
543 		asoc->addip_last_asconf->transport = NULL;
551 		/* Reset the transport of each chunk on this list */
554 			ch->transport = NULL;
572 		if (ch->transport == peer)
573 			ch->transport = NULL;
581 /* Add a transport address to an association.  */
661 	/* Initialize the pmtu of the transport. */
664 	/* If this is the first transport addr on this association,
703 	/* Set the transport's RTO.initial value */
710 	/* Add this peer into the transport hashtable */
718 	/* Attach the remote transport to our asoc.  */
738 /* Delete a transport address from an association.  */
744 	struct sctp_transport	*transport;
747 		transport = list_entry(pos, struct sctp_transport, transports);
748 		if (sctp_cmp_addr_exact(addr, &transport->ipaddr)) {
750 			sctp_assoc_rm_peer(asoc, transport);
756 /* Lookup a transport by address. */
783 		/* if the current transport is not the primary one, delete it */
789 /* Engage in transport control operations.
790  * Mark the transport up or down and send a notification to the user.
794 				  struct sctp_transport *transport,
801 	/* Record the transition on the transport.  */
808 		if (transport->state == SCTP_PF &&
811 		else if (transport->state == SCTP_UNCONFIRMED &&
815 		transport->state = SCTP_ACTIVE;
816 		sctp_transport_pl_reset(transport);
820 		/* If the transport was never confirmed, do not transition it
824 		if (transport->state != SCTP_UNCONFIRMED) {
825 			transport->state = SCTP_INACTIVE;
826 			sctp_transport_pl_reset(transport);
829 			sctp_transport_dst_release(transport);
835 		transport->state = SCTP_PF;
850 		sctp_ulpevent_notify_peer_addr_change(transport,
920  * Find which transport this TSN was sent on.
927 	struct sctp_transport *transport;
939 	 * The general strategy is to search each transport's transmitted
940 	 * list.   Return which transport this TSN lives on.
960 	list_for_each_entry(transport, &asoc->peer.transport_addr_list,
963 		if (transport == active)
965 		list_for_each_entry(chunk, &transport->transmitted,
968 				match = transport;
1039 			asoc->peer.last_data_from = chunk->transport;
1047 		if (chunk->transport)
1048 			chunk->transport->last_time_heard = ktime_get();
1201  *   inactive destination transport address, before reporting
1203  *   the data to an alternate active destination transport
1220  * transport with state SCTP_ACTIVE exists, round-robin through
1262 	/* First, try a score-based selection if both transport states
1324 		/* Keep track of the best PF transport from our
1348 	 * destination transport address (and possibly source transport
1350 	 * bump the most recently used transport.]
1366 	/* If we failed to find a usable transport, just camp on the
1423  * transports. This routine is called when a transport's PMTU has changed.