/*
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 "gnunet-service-ats_reservations.h"
#include "ats.h"
/**
- * We keep clients that are interested in performance in a linked list.
- */
-struct PerformanceClient
-{
- /**
- * Next in doubly-linked list.
- */
- struct PerformanceClient *next;
-
- /**
- * Previous in doubly-linked list.
- */
- struct PerformanceClient *prev;
-
- /**
- * Actual handle to the client.
- */
- struct GNUNET_SERVER_Client *client;
-
- /**
- * Options for the client.
- */
- enum StartFlag flag;
-
-};
-
-
-/**
- * Head of linked list of all clients to this service.
- */
-static struct PerformanceClient *pc_head;
-
-/**
- * Tail of linked list of all clients to this service.
- */
-static struct PerformanceClient *pc_tail;
-
-/**
- * Context for sending messages to performance clients.
- */
-static struct GNUNET_SERVER_NotificationContext *nc;
-
-
-/**
- * Find the performance client associated with the given handle.
- *
- * @param client server handle
- * @return internal handle
+ * Context for sending messages to performance clients without PIC.
*/
-static struct PerformanceClient *
-find_client (struct GNUNET_SERVER_Client *client)
-{
- struct PerformanceClient *pc;
-
- for (pc = pc_head; pc != NULL; pc = pc->next)
- if (pc->client == client)
- return pc;
- return NULL;
-}
-
+static struct GNUNET_NotificationContext *nc_no_pic;
/**
- * Register a new performance client.
- *
- * @param client handle of the new client
- * @param flag flag specifying the type of the client
+ * Context for sending messages to performance clients with PIC.
*/
-void
-GAS_performance_add_client (struct GNUNET_SERVER_Client *client,
- enum StartFlag flag)
-{
- struct PerformanceClient *pc;
-
- GNUNET_break (NULL == find_client (client));
- pc = GNUNET_malloc (sizeof (struct PerformanceClient));
- pc->client = client;
- pc->flag = flag;
- GNUNET_SERVER_notification_context_add (nc, client);
- GNUNET_SERVER_client_keep (client);
- GNUNET_CONTAINER_DLL_insert (pc_head, pc_tail, pc);
-}
-
-
-/**
- * Unregister a client (which may have been a performance client,
- * but this is not assured).
- *
- * @param client handle of the (now dead) client
- */
-void
-GAS_performance_remove_client (struct GNUNET_SERVER_Client *client)
-{
- struct PerformanceClient *pc;
-
- pc = find_client (client);
- if (NULL == pc)
- return;
- GNUNET_CONTAINER_DLL_remove (pc_head, pc_tail, pc);
- GNUNET_SERVER_client_drop (client);
- GNUNET_free (pc);
-}
+static struct GNUNET_NotificationContext *nc_pic;
/**
* 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 atsi performance data for the address
- * @param atsi_count number of performance records in 'ats'
+ * @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_performance_notify_clients (const struct GNUNET_PeerIdentity *peer,
- const char *plugin_name,
- const void *plugin_addr, size_t plugin_addr_len,
- const struct GNUNET_ATS_Information *atsi,
- uint32_t atsi_count,
- struct GNUNET_BANDWIDTH_Value32NBO
- bandwidth_out,
- struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
+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) +
- atsi_count * sizeof (struct GNUNET_ATS_Information) + plugin_addr_len +
- plugin_name_length;
+ sizeof (struct PeerInformationMessage) +
+ plugin_addr_len +
+ plugin_name_length;
char buf[msize] GNUNET_ALIGN;
- struct GNUNET_ATS_Information *atsp;
char *addrp;
- GNUNET_assert (msize < GNUNET_SERVER_MAX_MESSAGE_SIZE);
- GNUNET_assert (atsi_count <
- GNUNET_SERVER_MAX_MESSAGE_SIZE /
- sizeof (struct GNUNET_ATS_Information));
+ 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->ats_count = htonl (atsi_count);
+ 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;
- atsp = (struct GNUNET_ATS_Information *) &msg[1];
- memcpy (atsp, atsi, sizeof (struct GNUNET_ATS_Information) * atsi_count);
- addrp = (char *) &atsp[atsi_count];
- memcpy (addrp, plugin_addr, plugin_addr_len);
+ 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);
- for (pc = pc_head; pc != NULL; pc = pc->next)
- if (pc->flag == START_FLAG_PERFORMANCE_WITH_PIC)
- {
- GNUNET_SERVER_notification_context_unicast (nc, pc->client, &msg->header,
- GNUNET_YES);
- GNUNET_STATISTICS_update (GSA_stats,
- "# performance updates given to clients", 1,
- GNUNET_NO);
- }
+ 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);
+ }
}
/**
- * Handle 'reservation request' messages from clients.
+ * Transmit the given performance information to all performance
+ * clients.
*
- * @param cls unused, NULL
- * @param client client that sent the request
- * @param message the request message
+ * @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_handle_reservation_request (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+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)
{
- const struct ReservationRequestMessage *msg =
- (const struct ReservationRequestMessage *) message;
- struct ReservationResultMessage result;
- int32_t amount;
- struct GNUNET_TIME_Relative res_delay;
+ 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);
+}
- if (NULL == find_client (client))
- {
- /* missing start message! */
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+
+/**
+ * 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 GNUNET_SERVICE_Client *client = cls;
+
+ if (NULL == id)
return;
- }
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n",
- "RESERVATION_REQUEST");
- amount = (int32_t) ntohl (msg->amount);
- res_delay = GAS_reservations_reserve (&msg->peer, amount);
- if (res_delay.rel_value > 0)
- amount = 0;
- result.header.size = htons (sizeof (struct ReservationResultMessage));
- result.header.type = htons (GNUNET_MESSAGE_TYPE_ATS_RESERVATION_RESULT);
- result.amount = htonl (amount);
- result.peer = msg->peer;
- result.res_delay = GNUNET_TIME_relative_hton (res_delay);
- GNUNET_STATISTICS_update (GSA_stats, "# reservation requests processed", 1,
- GNUNET_NO);
- GNUNET_SERVER_notification_context_unicast (nc, client, &result.header,
- GNUNET_NO);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ 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);
}
/**
- * Handle 'preference change' messages from clients.
+ * Register a new performance client.
*
- * @param cls unused, NULL
- * @param client client that sent the request
- * @param message the request message
+ * @param client handle of the new client
+ * @param flag flag specifying the type of the client
*/
void
-GAS_handle_preference_change (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+GAS_performance_add_client (struct GNUNET_SERVICE_Client *client,
+ enum StartFlag flag)
{
- const struct ChangePreferenceMessage *msg;
- const struct PreferenceInformation *pi;
- uint16_t msize;
- uint32_t nump;
- uint32_t i;
+ struct GNUNET_MQ_Handle *mq;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n",
- "PREFERENCE_CHANGE");
- msize = ntohs (message->size);
- if (msize < sizeof (struct ChangePreferenceMessage))
+ mq = GNUNET_SERVICE_client_get_mq (client);
+ if (START_FLAG_PERFORMANCE_WITH_PIC == flag)
{
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
+ GNUNET_notification_context_add (nc_pic,
+ mq);
+ GAS_addresses_get_peer_info (NULL,
+ &peerinfo_it,
+ client);
}
- msg = (const struct ChangePreferenceMessage *) message;
- nump = ntohl (msg->num_preferences);
- if (msize !=
- sizeof (struct ChangePreferenceMessage) +
- nump * sizeof (struct PreferenceInformation))
+ else
{
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
+ GNUNET_notification_context_add (nc_no_pic,
+ mq);
}
- GNUNET_STATISTICS_update (GSA_stats, "# preference change requests processed",
- 1, GNUNET_NO);
- pi = (const struct PreferenceInformation *) &msg[1];
- for (i = 0; i < nump; i++)
- GAS_addresses_change_preference (&msg->peer,
- (enum GNUNET_ATS_PreferenceKind)
- ntohl (pi[i].preference_kind),
- pi[i].preference_value);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
}
* @param server handle to our server
*/
void
-GAS_performance_init (struct GNUNET_SERVER_Handle *server)
+GAS_performance_init ()
{
- nc = GNUNET_SERVER_notification_context_create (server, 128);
+ nc_no_pic = GNUNET_notification_context_create (32);
+ nc_pic = GNUNET_notification_context_create (32);
}
void
GAS_performance_done ()
{
- GNUNET_SERVER_notification_context_destroy (nc);
- nc = NULL;
+ 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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