/*
This file is part of GNUnet.
- (C) 2011 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2011-2015 GNUnet e.V.
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
+ 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
- General Public License for more details.
+ 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/>.
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ SPDX-License-Identifier: AGPL3.0-or-later
*/
-
/**
* @file ats/gnunet-service-ats_performance.c
* @brief ats service, interaction with 'performance' API
* @author Matthias Wachs
+ * @author Christian Grothoff
+ *
+ * TODO:
+ * - simplify functions by passing a `struct GNUNET_HELLO_Address`
*/
#include "platform.h"
+#include "gnunet-service-ats.h"
+#include "gnunet-service-ats_addresses.h"
#include "gnunet-service-ats_performance.h"
#include "ats.h"
-struct PerformanceClient
-{
- struct PerformanceClient * next;
-
- struct PerformanceClient * prev;
-
- struct GNUNET_SERVER_Client *client;
-
-};
-
-
/**
- * Head of linked list of all clients to this service.
+ * Context for sending messages to performance clients without PIC.
*/
-static struct PerformanceClient *pc_head;
+static struct GNUNET_NotificationContext *nc_no_pic;
/**
- * Tail of linked list of all clients to this service.
+ * Context for sending messages to performance clients with PIC.
*/
-static struct PerformanceClient *pc_tail;
-
+static struct GNUNET_NotificationContext *nc_pic;
+
-static struct PerformanceClient *
-find_client (struct GNUNET_SERVER_Client *client)
+/**
+ * Transmit the given performance information to all performance
+ * clients.
+ *
+ * @param client client to send to, NULL for all
+ * @param peer peer for which this is an address suggestion
+ * @param plugin_name 0-termintated string specifying the transport plugin
+ * @param plugin_addr binary address for the plugin to use
+ * @param plugin_addr_len number of bytes in plugin_addr
+ * @param active #GNUNET_YES if this address is actively used
+ * to maintain a connection to a peer;
+ * #GNUNET_NO if the address is not actively used;
+ * #GNUNET_SYSERR if this address is no longer available for ATS
+ * @param prop performance data for the address
+ * @param local_address_info information about the local flags for the address
+ * @param bandwidth_out assigned outbound bandwidth
+ * @param bandwidth_in assigned inbound bandwidth
+ */
+static void
+notify_client (struct GNUNET_SERVICE_Client *client,
+ const struct GNUNET_PeerIdentity *peer,
+ const char *plugin_name,
+ const void *plugin_addr,
+ size_t plugin_addr_len,
+ int active,
+ const struct GNUNET_ATS_Properties *prop,
+ enum GNUNET_HELLO_AddressInfo local_address_info,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
{
- struct PerformanceClient * pc;
+ struct PeerInformationMessage *msg;
+ size_t plugin_name_length = strlen (plugin_name) + 1;
+ size_t msize =
+ sizeof (struct PeerInformationMessage) +
+ plugin_addr_len +
+ plugin_name_length;
+ char buf[msize] GNUNET_ALIGN;
+ char *addrp;
- for (pc = pc_head; pc != NULL; pc = pc->next)
- if (pc->client == client)
- return pc;
- return NULL;
+ if (NULL != prop)
+ GNUNET_break (GNUNET_NT_UNSPECIFIED != prop->scope);
+ GNUNET_assert (msize < GNUNET_MAX_MESSAGE_SIZE);
+ msg = (struct PeerInformationMessage *) buf;
+ msg->header.size = htons (msize);
+ msg->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_PEER_INFORMATION);
+ msg->id = htonl (0);
+ msg->peer = *peer;
+ msg->address_length = htons (plugin_addr_len);
+ msg->address_active = ntohl ((uint32_t) active);
+ msg->plugin_name_length = htons (plugin_name_length);
+ msg->bandwidth_out = bandwidth_out;
+ msg->bandwidth_in = bandwidth_in;
+ if (NULL != prop)
+ GNUNET_ATS_properties_hton (&msg->properties,
+ prop);
+ else
+ memset (&msg->properties,
+ 0,
+ sizeof (struct GNUNET_ATS_Properties));
+ msg->address_local_info = htonl (local_address_info);
+ addrp = (char *) &msg[1];
+ GNUNET_memcpy (addrp, plugin_addr, plugin_addr_len);
+ strcpy (&addrp[plugin_addr_len], plugin_name);
+ if (NULL == client)
+ {
+ GNUNET_notification_context_broadcast (nc_pic,
+ &msg->header,
+ GNUNET_YES);
+ }
+ else
+ {
+ struct GNUNET_MQ_Envelope *env;
+
+ env = GNUNET_MQ_msg_copy (&msg->header);
+ GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq (client),
+ env);
+ }
}
+/**
+ * Transmit the given performance information to all performance
+ * clients.
+ *
+ * @param peer peer for which this is an address suggestion
+ * @param plugin_name 0-termintated string specifying the transport plugin
+ * @param plugin_addr binary address for the plugin to use
+ * @param plugin_addr_len number of bytes in @a plugin_addr
+ * @param active #GNUNET_YES if this address is actively used
+ * to maintain a connection to a peer;
+ * #GNUNET_NO if the address is not actively used;
+ * #GNUNET_SYSERR if this address is no longer available for ATS
+ * @param prop performance data for the address
+ * @param local_address_info information about the local flags for the address
+ * @param bandwidth_out assigned outbound bandwidth
+ * @param bandwidth_in assigned inbound bandwidth
+ */
void
-GAS_add_performance_client (struct GNUNET_SERVER_Client *client)
+GAS_performance_notify_all_clients (const struct GNUNET_PeerIdentity *peer,
+ const char *plugin_name,
+ const void *plugin_addr,
+ size_t plugin_addr_len,
+ int active,
+ const struct GNUNET_ATS_Properties *prop,
+ enum GNUNET_HELLO_AddressInfo local_address_info,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
{
- struct PerformanceClient * pc;
-
- GNUNET_break (NULL == find_client (client));
- pc = GNUNET_malloc (sizeof (struct PerformanceClient));
- pc->client = client;
- GNUNET_CONTAINER_DLL_insert(pc_head, pc_tail, pc);
+ GNUNET_break ( (NULL == prop) ||
+ (GNUNET_NT_UNSPECIFIED != prop->scope) );
+ notify_client (NULL,
+ peer,
+ plugin_name,
+ plugin_addr,
+ plugin_addr_len,
+ active,
+ prop,
+ local_address_info,
+ bandwidth_out,
+ bandwidth_in);
+ GNUNET_STATISTICS_update (GSA_stats,
+ "# performance updates given to clients",
+ 1,
+ GNUNET_NO);
}
-void
-GAS_remove_performance_client (struct GNUNET_SERVER_Client *client)
+/**
+ * Iterator for called from #GAS_addresses_get_peer_info()
+ *
+ * @param cls closure with the `struct GNUNET_SERVICE_Client *` to inform.
+ * @param id the peer id
+ * @param plugin_name plugin name
+ * @param plugin_addr address
+ * @param plugin_addr_len length of @a plugin_addr
+ * @param active is address actively used
+ * @param prop performance information
+ * @param local_address_info information about the local flags for the address
+ * @param bandwidth_out current outbound bandwidth assigned to address
+ * @param bandwidth_in current inbound bandwidth assigned to address
+ */
+static void
+peerinfo_it (void *cls,
+ const struct GNUNET_PeerIdentity *id,
+ const char *plugin_name,
+ const void *plugin_addr,
+ size_t plugin_addr_len,
+ int active,
+ const struct GNUNET_ATS_Properties *prop,
+ enum GNUNET_HELLO_AddressInfo local_address_info,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
{
- struct PerformanceClient * pc;
+ struct GNUNET_SERVICE_Client *client = cls;
- pc = find_client (client);
- if (NULL == pc)
+ if (NULL == id)
return;
- GNUNET_CONTAINER_DLL_remove (pc_head, pc_tail, pc);
- GNUNET_SERVER_client_drop (client);
- GNUNET_free (pc);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Callback for peer `%s' plugin `%s' BW out %u, BW in %u \n",
+ GNUNET_i2s (id),
+ plugin_name,
+ (unsigned int) ntohl (bandwidth_out.value__),
+ (unsigned int) ntohl (bandwidth_in.value__));
+ GNUNET_break (GNUNET_NT_UNSPECIFIED != prop->scope);
+ notify_client (client,
+ id,
+ plugin_name,
+ plugin_addr,
+ plugin_addr_len,
+ active,
+ prop,
+ local_address_info,
+ bandwidth_out,
+ bandwidth_in);
}
+/**
+ * Register a new performance client.
+ *
+ * @param client handle of the new client
+ * @param flag flag specifying the type of the client
+ */
void
-GAS_handle_reservation_request (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-
+GAS_performance_add_client (struct GNUNET_SERVICE_Client *client,
+ enum StartFlag flag)
{
- // struct AddressUpdateMessage * msg = (struct AddressUpdateMessage *) message;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "RESERVATION_REQUEST");
+ struct GNUNET_MQ_Handle *mq;
+
+ mq = GNUNET_SERVICE_client_get_mq (client);
+ if (START_FLAG_PERFORMANCE_WITH_PIC == flag)
+ {
+ GNUNET_notification_context_add (nc_pic,
+ mq);
+ GAS_addresses_get_peer_info (NULL,
+ &peerinfo_it,
+ client);
+ }
+ else
+ {
+ GNUNET_notification_context_add (nc_no_pic,
+ mq);
+ }
}
+/**
+ * Initialize performance subsystem.
+ *
+ * @param server handle to our server
+ */
void
-GAS_handle_preference_change (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-
+GAS_performance_init ()
{
- // struct ChangePreferenceMessage * msg = (struct ChangePreferenceMessage *) message;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "PREFERENCE_CHANGE");
+ nc_no_pic = GNUNET_notification_context_create (32);
+ nc_pic = GNUNET_notification_context_create (32);
}
+/**
+ * Shutdown performance subsystem.
+ */
+void
+GAS_performance_done ()
+{
+ GNUNET_notification_context_destroy (nc_no_pic);
+ nc_no_pic = NULL;
+ GNUNET_notification_context_destroy (nc_pic);
+ nc_pic = NULL;
+}
+
/* end of gnunet-service-ats_performance.c */
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