* @author Christian Grothoff
*/
#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
{
- struct PerformanceClient * next;
+ /**
+ * Next in doubly-linked list.
+ */
+ struct PerformanceClient *next;
- struct PerformanceClient * prev;
+ /**
+ * 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;
+
+};
+
+
+/**
+ * We keep clients that are interested in performance in a linked list.
+ */
+struct AddressIteration
+{
+ /**
+ * Actual handle to the client.
+ */
+ struct PerformanceClient *pc;
+
+ int all;
+
+ uint32_t id;
+
+ unsigned int msg_type;
};
* Tail of linked list of all clients to this service.
*/
static struct PerformanceClient *pc_tail;
-
-static struct PerformanceClient *
+/**
+ * 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
+ */
+static struct PerformanceClient *
find_client (struct GNUNET_SERVER_Client *client)
{
- struct PerformanceClient * pc;
+ struct PerformanceClient *pc;
for (pc = pc_head; pc != NULL; pc = pc->next)
if (pc->client == client)
return NULL;
}
+/**
+ * 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);
+}
+/**
+ * Transmit the given performance information to all performance
+ * clients.
+ *
+ * @param pc performance client to send to
+ * @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 is this address active
+ * @param atsi performance data for the address
+ * @param atsi_count number of performance records in 'ats'
+ * @param bandwidth_out assigned outbound bandwidth
+ * @param bandwidth_in assigned inbound bandwidth
+ */
void
-GAS_performance_add_client (struct GNUNET_SERVER_Client *client)
+GAS_performance_notify_client (struct PerformanceClient *pc,
+ const struct GNUNET_PeerIdentity *peer,
+ const char *plugin_name,
+ const void *plugin_addr, size_t plugin_addr_len,
+ const int active,
+ const struct GNUNET_ATS_Information *atsi,
+ uint32_t atsi_count,
+ 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;
+ char buf[msize] GNUNET_ALIGN;
+ struct GNUNET_ATS_Information *atsp;
+ char *addrp;
+
+ GNUNET_assert (NULL != pc);
+ if (NULL == find_client (pc->client))
+ return; /* Client disconnected */
+
+ GNUNET_assert (msize < GNUNET_SERVER_MAX_MESSAGE_SIZE);
+ GNUNET_assert (atsi_count <
+ GNUNET_SERVER_MAX_MESSAGE_SIZE /
+ sizeof (struct GNUNET_ATS_Information));
+ msg = (struct PeerInformationMessage *) buf;
+ msg->header.size = htons (msize);
+ msg->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_PEER_INFORMATION);
+ msg->id = htonl (0);
+ msg->ats_count = htonl (atsi_count);
+ msg->peer = *peer;
+ msg->address_length = htons (plugin_addr_len);
+ msg->address_active = ntohl (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);
+ strcpy (&addrp[plugin_addr_len], plugin_name);
+ GNUNET_SERVER_notification_context_unicast (nc, pc->client, &msg->header,
+ GNUNET_YES);
+}
+
+
+/**
+ * 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 plugin_addr
+ * @param active is this address active
+ * @param atsi performance data for the address
+ * @param atsi_count number of performance records in 'ats'
+ * @param bandwidth_out assigned outbound bandwidth
+ * @param bandwidth_in assigned inbound bandwidth
+ */
+void
+GAS_performance_notify_all_clients (const struct GNUNET_PeerIdentity *peer,
+ const char *plugin_name,
+ const void *plugin_addr, size_t plugin_addr_len,
+ const int active,
+ const struct GNUNET_ATS_Information *atsi,
+ uint32_t atsi_count,
+ struct GNUNET_BANDWIDTH_Value32NBO
+ bandwidth_out,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
+{
+ struct PerformanceClient *pc;
+
+ for (pc = pc_head; pc != NULL; pc = pc->next)
+ if (pc->flag == START_FLAG_PERFORMANCE_WITH_PIC)
+ {
+ GAS_performance_notify_client (pc,
+ peer,
+ plugin_name, plugin_addr, plugin_addr_len,
+ active,
+ atsi, atsi_count,
+ bandwidth_out, bandwidth_in);
+ }
+ GNUNET_STATISTICS_update (GSA_stats,
+ "# performance updates given to clients", 1,
+ GNUNET_NO);
+}
+
+
+static void
+peerinfo_it (void *cls,
+ const struct GNUNET_PeerIdentity *id,
+ const char *plugin_name,
+ const void *plugin_addr, size_t plugin_addr_len,
+ const int active,
+ const struct GNUNET_ATS_Information *atsi,
+ uint32_t atsi_count,
+ struct GNUNET_BANDWIDTH_Value32NBO
+ bandwidth_out,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
+{
+ struct PerformanceClient *pc = cls;
+ GNUNET_assert (NULL != pc);
+ if (NULL == id)
+ return;
+
+ if (GNUNET_NO == active)
+ return;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Callback for peer `%s' plugin `%s' BW out %llu, BW in %llu \n",
+ GNUNET_i2s (id),
+ plugin_name,
+ ntohl (bandwidth_out.value__),
+ ntohl (bandwidth_in.value__));
+ GAS_performance_notify_client(pc,
+ id,
+ plugin_name, plugin_addr, plugin_addr_len,
+ active,
+ atsi, atsi_count,
+ bandwidth_out, bandwidth_in);
+}
+
+
+/**
+ * Iterator for GAS_performance_add_client
+ *
+ * @param cls the client requesting information
+ * @param id result
+ */
+static void
+peer_it (void *cls,
+ const struct GNUNET_PeerIdentity *id)
+{
+ struct PerformanceClient *pc = cls;
+ if (NULL != id)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Callback for peer `%s'\n", GNUNET_i2s (id));
+ GAS_addresses_get_peer_info (id, &peerinfo_it, pc);
+ }
+}
+
+/**
+ * Register a new performance client.
+ *
+ * @param client handle of the new client
+ * @param flag flag specifying the type of the client
+ */
+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;
- GNUNET_CONTAINER_DLL_insert(pc_head, pc_tail, pc);
+ pc->flag = flag;
+ GNUNET_SERVER_notification_context_add (nc, client);
+ GNUNET_SERVER_client_keep (client);
+ GNUNET_CONTAINER_DLL_insert (pc_head, pc_tail, pc);
+
+ /* Send information about clients */
+ GAS_addresses_iterate_peers (&peer_it, pc);
+}
+
+static void transmit_req_addr (struct AddressIteration *ai,
+ const struct GNUNET_PeerIdentity *id,
+ const char *plugin_name,
+ const void *plugin_addr, size_t plugin_addr_len,
+ const int active,
+ const struct GNUNET_ATS_Information *atsi,
+ uint32_t atsi_count,
+ struct GNUNET_BANDWIDTH_Value32NBO
+ bandwidth_out,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
+
+{
+
+ struct GNUNET_ATS_Information *atsp;
+ struct PeerInformationMessage *msg;
+ char *addrp;
+ size_t plugin_name_length;
+ size_t msize;
+
+ if (NULL != plugin_name)
+ plugin_name_length = strlen (plugin_name) + 1;
+ else
+ plugin_name_length = 0;
+ msize = sizeof (struct PeerInformationMessage) +
+ atsi_count * sizeof (struct GNUNET_ATS_Information) +
+ plugin_addr_len + plugin_name_length;
+ char buf[msize] GNUNET_ALIGN;
+
+ GNUNET_assert (msize < GNUNET_SERVER_MAX_MESSAGE_SIZE);
+ GNUNET_assert (atsi_count <
+ GNUNET_SERVER_MAX_MESSAGE_SIZE /
+ sizeof (struct GNUNET_ATS_Information));
+ msg = (struct PeerInformationMessage *) buf;
+ msg->header.size = htons (msize);
+ msg->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_ADDRESSLIST_RESPONSE);
+ msg->ats_count = htonl (atsi_count);
+ msg->id = htonl (ai->id);
+ if (NULL != id)
+ msg->peer = *id;
+ else
+ memset (&msg->peer, '\0', sizeof (struct GNUNET_PeerIdentity));
+ msg->address_length = htons (plugin_addr_len);
+ msg->address_active = ntohl (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];
+ if (NULL != plugin_addr)
+ memcpy (addrp, plugin_addr, plugin_addr_len);
+ if (NULL != plugin_name)
+ strcpy (&addrp[plugin_addr_len], plugin_name);
+ GNUNET_SERVER_notification_context_unicast (nc, ai->pc->client, &msg->header,
+ GNUNET_NO);
+}
+
+static void
+req_addr_peerinfo_it (void *cls,
+ const struct GNUNET_PeerIdentity *id,
+ const char *plugin_name,
+ const void *plugin_addr, size_t plugin_addr_len,
+ const int active,
+ const struct GNUNET_ATS_Information *atsi,
+ uint32_t atsi_count,
+ struct GNUNET_BANDWIDTH_Value32NBO
+ bandwidth_out,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
+{
+ struct AddressIteration *ai = cls;
+
+ GNUNET_assert (NULL != ai);
+ GNUNET_assert (NULL != ai->pc);
+ if (NULL == find_client (ai->pc->client))
+ return; /* Client disconnected */
+
+ if ((NULL == id) && (NULL == id) && (NULL == id))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Address iteration done\n");
+ return;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Callback for %s peer `%s' plugin `%s' BW out %llu, BW in %llu \n",
+ (active == GNUNET_YES) ? "ACTIVE" : "INACTIVE",
+ GNUNET_i2s (id),
+ plugin_name,
+ ntohl (bandwidth_out.value__),
+ ntohl (bandwidth_in.value__));
+
+ /* Transmit result */
+ if ((GNUNET_YES == ai->all) || (GNUNET_YES == active))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending result for %s peer `%s' plugin `%s' BW out %llu, BW in %llu \n",
+ (active == GNUNET_YES) ? "ACTIVE" : "INACTIVE",
+ GNUNET_i2s (id),
+ plugin_name,
+ ntohl (bandwidth_out.value__),
+ ntohl (bandwidth_in.value__));
+ transmit_req_addr (cls,
+ id,
+ plugin_name,
+ plugin_addr, plugin_addr_len,
+ active,
+ atsi,
+ atsi_count,
+ bandwidth_out, bandwidth_in);
+ }
}
+/**
+ * Iterator for GAS_handle_request_address_list
+ *
+ * @param cls the client requesting information
+ * @param id result
+ */
+static void
+req_addr_peer_it (void *cls,
+ const struct GNUNET_PeerIdentity *id)
+{
+ struct AddressIteration *ai = cls;
+ if (NULL != id)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Callback for peer `%s'\n", GNUNET_i2s (id));
+ GAS_addresses_get_peer_info (id, &req_addr_peerinfo_it, ai);
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Peer iteration done\n");
+ }
+}
+
+/**
+ * Handle 'address list request' messages from clients.
+ *
+ * @param cls unused, NULL
+ * @param client client that sent the request
+ * @param message the request message
+ */
void
-GAS_performance_remove_client (struct GNUNET_SERVER_Client *client)
+GAS_handle_request_address_list (void *cls, struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
{
- struct PerformanceClient * pc;
+ struct PerformanceClient *pc;
+ struct AddressIteration ai;
+ struct AddressListRequestMessage * alrm = (struct AddressListRequestMessage *) message;
+ struct GNUNET_PeerIdentity allzeros;
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_zero;
- 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);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n",
+ "ADDRESSLIST_REQUEST");
+
+ if (NULL == (pc = find_client(client)))
+ {
+ GNUNET_break (0);
+ return;
+ }
+
+ ai.all = ntohl (alrm->all);
+ ai.id = ntohl (alrm->id);
+ ai.pc = pc;
+
+ memset (&allzeros, '\0', sizeof (struct GNUNET_PeerIdentity));
+ bandwidth_zero.value__ = htonl (0);
+ if (0 == memcmp (&alrm->peer, &allzeros, sizeof (struct GNUNET_PeerIdentity)))
+ {
+ /* Return addresses for all peers */
+ GAS_addresses_iterate_peers (&req_addr_peer_it, &ai);
+ transmit_req_addr (&ai, NULL, NULL, NULL, 0, GNUNET_NO, NULL, 0, bandwidth_zero, bandwidth_zero);
+ }
+ else
+ {
+ /* Return addresses for a specific peer */
+ GAS_addresses_get_peer_info (&alrm->peer, &req_addr_peerinfo_it, &ai);
+ transmit_req_addr (&ai, NULL, NULL, NULL, 0, GNUNET_NO, NULL, 0, bandwidth_zero, bandwidth_zero);
+ }
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
}
+
+/**
+ * Handle 'reservation request' messages from clients.
+ *
+ * @param cls unused, NULL
+ * @param client client that sent the request
+ * @param message the request message
+ */
void
GAS_handle_reservation_request (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-
+ const struct GNUNET_MessageHeader *message)
{
- // struct AddressUpdateMessage * msg = (struct AddressUpdateMessage *) message;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "RESERVATION_REQUEST");
+ const struct ReservationRequestMessage *msg =
+ (const struct ReservationRequestMessage *) message;
+ struct ReservationResultMessage result;
+ int32_t amount;
+ struct GNUNET_TIME_Relative res_delay;
+
+ if (NULL == find_client (client))
+ {
+ /* missing start message! */
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ 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);
}
+/**
+ * Handle 'preference change' messages from clients.
+ *
+ * @param cls unused, NULL
+ * @param client client that sent the request
+ * @param message the request message
+ */
void
GAS_handle_preference_change (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+ const struct GNUNET_MessageHeader *message)
+{
+ const struct ChangePreferenceMessage *msg;
+ const struct PreferenceInformation *pi;
+ uint16_t msize;
+ uint32_t nump;
+ uint32_t i;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n",
+ "PREFERENCE_CHANGE");
+ msize = ntohs (message->size);
+ if (msize < sizeof (struct ChangePreferenceMessage))
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ msg = (const struct ChangePreferenceMessage *) message;
+ nump = ntohl (msg->num_preferences);
+ if (msize !=
+ sizeof (struct ChangePreferenceMessage) +
+ nump * sizeof (struct PreferenceInformation))
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ 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);
+}
+
+
+/**
+ * Initialize performance subsystem.
+ *
+ * @param server handle to our server
+ */
+void
+GAS_performance_init (struct GNUNET_SERVER_Handle *server)
{
- // struct ChangePreferenceMessage * msg = (struct ChangePreferenceMessage *) message;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "PREFERENCE_CHANGE");
+ nc = GNUNET_SERVER_notification_context_create (server, 128);
}
+/**
+ * Shutdown performance subsystem.
+ */
+void
+GAS_performance_done ()
+{
+ GNUNET_SERVER_notification_context_destroy (nc);
+ nc = NULL;
+}
+
/* end of gnunet-service-ats_performance.c */
projects / oweals / gnunet.git / blobdiff