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- /*
- This file is part of GNUnet.
- Copyright (C) 2011-2016 GNUnet e.V.
- GNUnet is free software: you can redistribute it and/or modify it
- under the terms of the GNU Affero General Public License as published
- by the Free Software Foundation, either version 3 of the License,
- or (at your option) any later version.
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Affero General Public License for more details.
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- SPDX-License-Identifier: AGPL3.0-or-later
- */
- /**
- * @file ats/gnunet-service-ats_scheduling.c
- * @brief ats service, interaction with 'scheduling' API
- * @author Matthias Wachs
- * @author Christian Grothoff
- */
- #include "platform.h"
- #include "gnunet-service-ats_addresses.h"
- #include "gnunet-service-ats_scheduling.h"
- #include "ats.h"
- /**
- * Actual handle to the client.
- */
- static struct GNUNET_SERVICE_Client *my_client;
- /**
- * Register a new scheduling client.
- *
- * @param client handle of the new client
- * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
- */
- int
- GAS_scheduling_add_client (struct GNUNET_SERVICE_Client *client)
- {
- if (NULL != my_client)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "This ATS already has a scheduling client, refusing new scheduling client for now.\n");
- return GNUNET_SYSERR;
- }
- my_client = client;
- return GNUNET_OK;
- }
- /**
- * Unregister a client (which may have been a scheduling client,
- * but this is not assured).
- *
- * @param client handle of the (now dead) client
- */
- void
- GAS_scheduling_remove_client (struct GNUNET_SERVICE_Client *client)
- {
- if (my_client != client)
- return;
- GAS_addresses_destroy_all ();
- my_client = NULL;
- }
- /**
- * Transmit the given address suggestion and bandwidth update to all scheduling
- * clients.
- *
- * @param peer peer for which this is an address suggestion
- * @param session_id session ID to use for the given client
- * @param bandwidth_out assigned outbound bandwidth
- * @param bandwidth_in assigned inbound bandwidth
- */
- void
- GAS_scheduling_transmit_address_suggestion (const struct
- GNUNET_PeerIdentity *peer,
- uint32_t session_id,
- struct GNUNET_BANDWIDTH_Value32NBO
- bandwidth_out,
- struct GNUNET_BANDWIDTH_Value32NBO
- bandwidth_in)
- {
- struct GNUNET_MQ_Envelope *env;
- struct AddressSuggestionMessage *msg;
- if (NULL == my_client)
- return;
- GNUNET_STATISTICS_update (GSA_stats,
- "# address suggestions made",
- 1,
- GNUNET_NO);
- env = GNUNET_MQ_msg (msg,
- GNUNET_MESSAGE_TYPE_ATS_ADDRESS_SUGGESTION);
- msg->peer = *peer;
- msg->session_id = htonl (session_id);
- msg->bandwidth_out = bandwidth_out;
- msg->bandwidth_in = bandwidth_in;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "ATS sends quota for peer `%s': (in/out) %u/%u\n",
- GNUNET_i2s (peer),
- (unsigned int) ntohl (bandwidth_in.value__),
- (unsigned int) ntohl (bandwidth_out.value__));
- GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq (my_client),
- env);
- }
- /**
- * Handle 'address add' messages from clients.
- *
- * @param m the request message
- */
- void
- GAS_handle_address_add (const struct AddressAddMessage *m)
- {
- const char *address;
- const char *plugin_name;
- uint16_t address_length;
- uint16_t plugin_name_length;
- struct GNUNET_ATS_Properties prop;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received `%s' message\n",
- "ADDRESS_ADD");
- address_length = ntohs (m->address_length);
- plugin_name_length = ntohs (m->plugin_name_length);
- address = (const char *) &m[1];
- if (plugin_name_length != 0)
- plugin_name = &address[address_length];
- else
- plugin_name = "";
- GNUNET_STATISTICS_update (GSA_stats,
- "# addresses created",
- 1,
- GNUNET_NO);
- GNUNET_ATS_properties_ntoh (&prop,
- &m->properties);
- GNUNET_break (GNUNET_NT_UNSPECIFIED != prop.scope);
- GAS_addresses_add (&m->peer,
- plugin_name,
- address,
- address_length,
- ntohl (m->address_local_info),
- ntohl (m->session_id),
- &prop);
- }
- /**
- * Handle 'address update' messages from clients.
- *
- * @param m the request message
- */
- void
- GAS_handle_address_update (const struct AddressUpdateMessage *m)
- {
- struct GNUNET_ATS_Properties prop;
- GNUNET_STATISTICS_update (GSA_stats,
- "# address updates received",
- 1,
- GNUNET_NO);
- GNUNET_ATS_properties_ntoh (&prop,
- &m->properties);
- GAS_addresses_update (&m->peer,
- ntohl (m->session_id),
- &prop);
- }
- /**
- * Handle 'address destroyed' messages from clients.
- *
- * @param m the request message
- */
- void
- GAS_handle_address_destroyed (const struct AddressDestroyedMessage *m)
- {
- struct GNUNET_MQ_Envelope *env;
- struct GNUNET_ATS_SessionReleaseMessage *srm;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received `%s' message\n",
- "ADDRESS_DESTROYED");
- GNUNET_STATISTICS_update (GSA_stats,
- "# addresses destroyed",
- 1,
- GNUNET_NO);
- GAS_addresses_destroy (&m->peer,
- ntohl (m->session_id));
- env = GNUNET_MQ_msg (srm,
- GNUNET_MESSAGE_TYPE_ATS_SESSION_RELEASE);
- srm->session_id = m->session_id;
- srm->peer = m->peer;
- GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq (my_client),
- env);
- }
- /* end of gnunet-service-ats_scheduling.c */
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