/*
This file is part of GNUnet.
- (C) 2011 Christian Grothoff (and other contributing authors)
+ 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 General Public License as published
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.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
#include "gnunet-service-ats_scheduling.h"
#include "ats.h"
-
-/**
- * We keep clients that are interested in scheduling in a linked list.
- * This list typically has only one entry (for the
- * gnunet-service-transport process); however, it is possible that
- * there is more than one (at least briefly) because after a crash a
- * new one may connect before we've been notified to clean up the old
- * process.
- */
-struct SchedulingClient
-{
- /**
- * Next in doubly-linked list.
- */
- struct SchedulingClient * next;
-
- /**
- * Previous in doubly-linked list.
- */
- struct SchedulingClient * prev;
-
- /**
- * Actual handle to the client.
- */
- struct GNUNET_SERVER_Client *client;
-
-};
-
-
-/**
- * Head of linked list of all clients to this service.
- */
-static struct SchedulingClient *sc_head;
-
-/**
- * Tail of linked list of all clients to this service.
- */
-static struct SchedulingClient *sc_tail;
-
-/**
- * Context for sending messages to clients.
- */
-static struct GNUNET_SERVER_NotificationContext *nc;
-
-
/**
- * Find the scheduling client associated with the given
- * handle.
- *
- * @param client server handle
- * @return internal handle
+ * Actual handle to the client.
*/
-static struct SchedulingClient *
-find_client (struct GNUNET_SERVER_Client *client)
-{
- struct SchedulingClient * sc;
-
- for (sc = sc_head; sc != NULL; sc = sc->next)
- if (sc->client == client)
- return sc;
- return NULL;
-}
+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
*/
-void
-GAS_scheduling_add_client (struct GNUNET_SERVER_Client *client)
+int
+GAS_scheduling_add_client (struct GNUNET_SERVICE_Client *client)
{
- struct SchedulingClient *sc;
-
- GNUNET_break (NULL == find_client (client));
- sc = GNUNET_malloc (sizeof (struct SchedulingClient));
- sc->client = client;
- GNUNET_SERVER_notification_context_add (nc, client);
- GNUNET_SERVER_client_keep (client);
- GNUNET_CONTAINER_DLL_insert(sc_head, sc_tail, sc);
+ 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_SERVER_Client *client)
+GAS_scheduling_remove_client (struct GNUNET_SERVICE_Client *client)
{
- struct SchedulingClient * sc;
-
- sc = find_client (client);
- if (NULL == sc)
+ if (my_client != client)
return;
- GNUNET_CONTAINER_DLL_remove (sc_head, sc_tail, sc);
- GAS_address_client_disconnected (client);
- GNUNET_SERVER_client_drop (client);
- GNUNET_free (sc);
+ GAS_addresses_destroy_all ();
+ my_client = NULL;
}
* 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 session_client which client gave us this session_id?
- * @param session_id session ID to use for the given client (other clients will see 0)
- * @param atsi performance data for the address
- * @param atsi_count number of performance records in 'ats'
+ * @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,
- const char *plugin_name,
- const void *plugin_addr, size_t plugin_addr_len,
- struct GNUNET_SERVER_Client *session_client,
- uint32_t session_id,
- const struct GNUNET_TRANSPORT_ATS_Information *atsi,
- uint32_t atsi_count,
- struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
- struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
+ uint32_t session_id,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
{
- struct SchedulingClient *sc;
+ struct GNUNET_MQ_Envelope *env;
struct AddressSuggestionMessage *msg;
- size_t plugin_name_length = strlen (plugin_name) + 1;
- size_t msize = sizeof (struct AddressSuggestionMessage) + atsi_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information)
- + plugin_addr_len + plugin_name_length;
- char buf[msize];
- struct GNUNET_TRANSPORT_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_TRANSPORT_ATS_Information));
- msg = (struct AddressSuggestionMessage*) buf;
- msg->header.size = htons (msize);
- msg->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_ADDRESS_SUGGESTION);
- msg->ats_count = htonl (atsi_count);
+ 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->address_length = htons (plugin_addr_len);
- msg->plugin_name_length = htons (plugin_name_length);
- /* session ID is set only if 'client' is the same... */
+ msg->session_id = htonl (session_id);
msg->bandwidth_out = bandwidth_out;
msg->bandwidth_in = bandwidth_in;
- atsp = (struct GNUNET_TRANSPORT_ATS_Information* ) &msg[1];
- memcpy (atsp, atsi, sizeof (struct GNUNET_TRANSPORT_ATS_Information) * atsi_count);
- addrp = (char*) &atsp[atsi_count];
- memcpy (addrp, plugin_addr, plugin_addr_len);
- strcpy (&addrp[plugin_addr_len], plugin_name);
- for (sc = sc_head; sc != NULL; sc = sc->next)
- {
- if (sc->client == session_client)
- msg->session_id = htonl (session_id);
- else
- msg->session_id = htonl (0);
- GNUNET_SERVER_notification_context_unicast (nc,
- sc->client,
- &msg->header,
- GNUNET_YES);
- }
-}
-
-
-/**
- * Handle 'request address' messages from clients.
- *
- * @param cls unused, NULL
- * @param client client that sent the request
- * @param message the request message
- */
-void
-GAS_handle_request_address (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-
-{
- const struct RequestAddressMessage * msg = (const struct RequestAddressMessage *) message;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "REQUEST_ADDRESS");
- GNUNET_break (0 == ntohl (msg->reserved));
- GAS_addresses_request_address (&msg->peer);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ 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 update' messages from clients.
+ * Handle 'address add' messages from clients.
*
- * @param cls unused, NULL
- * @param client client that sent the request
- * @param message the request message
+ * @param m the request message
*/
void
-GAS_handle_address_update (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-
+GAS_handle_address_add (const struct AddressAddMessage *m)
{
- const struct AddressUpdateMessage * m;
- const struct GNUNET_TRANSPORT_ATS_Information *atsi;
const char *address;
const char *plugin_name;
uint16_t address_length;
uint16_t plugin_name_length;
- uint32_t ats_count;
- uint16_t size;
+ struct GNUNET_ATS_Properties prop;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received `%s' message\n",
- "ADDRESS_UPDATE");
- size = ntohs (message->size);
- if (size <= sizeof (struct AddressUpdateMessage))
- {
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- m = (const struct AddressUpdateMessage*) message;
- ats_count = ntohl (m->ats_count);
+ 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);
- atsi = (const struct GNUNET_TRANSPORT_ATS_Information*) &m[1];
- address = (const char*) &atsi[ats_count];
- plugin_name = &address[address_length];
- if ( (address_length +
- plugin_name_length +
- ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information) +
- sizeof (struct AddressUpdateMessage) != ntohs (message->size)) ||
- (ats_count > GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_TRANSPORT_ATS_Information)) ||
- (plugin_name[plugin_name_length - 1] != '\0') )
- {
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- GAS_address_update (&m->peer,
- plugin_name,
- address,
- address_length,
- client,
- ntohl (m->session_id),
- atsi,
- ats_count);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ 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_ATS_NET_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 destroyed' messages from clients.
+ * Handle 'address update' messages from clients.
*
- * @param cls unused, NULL
- * @param client client that sent the request
- * @param message the request message
+ * @param m the request message
*/
void
-GAS_handle_address_destroyed (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-
+GAS_handle_address_update (const struct AddressUpdateMessage *m)
{
- const struct AddressDestroyedMessage * m;
- const char *address;
- const char *plugin_name;
- uint16_t address_length;
- uint16_t plugin_name_length;
- uint16_t size;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received `%s' message\n",
- "ADDRESS_DESTROYED");
- size = ntohs (message->size);
- if (size <= sizeof (struct AddressDestroyedMessage))
- {
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- m = (const struct AddressDestroyedMessage*) message;
- GNUNET_break (0 == ntohl (m->reserved));
- address_length = ntohs (m->address_length);
- plugin_name_length = ntohs (m->plugin_name_length);
- address = (const char*) &m[1];
- plugin_name = &address[address_length];
- if ( (address_length +
- plugin_name_length +
- sizeof (struct AddressDestroyedMessage) != ntohs (message->size)) ||
- (plugin_name[plugin_name_length - 1] != '\0') )
- {
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- GAS_address_destroyed (&m->peer,
- plugin_name,
- address,
- address_length,
- client,
- ntohl (m->session_id));
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ 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);
}
/**
- * Initialize scheduling subsystem.
+ * Handle 'address destroyed' messages from clients.
*
- * @param server handle to our server
+ * @param m the request message
*/
void
-GAS_scheduling_init (struct GNUNET_SERVER_Handle *server)
+GAS_handle_address_destroyed (const struct AddressDestroyedMessage *m)
{
- nc = GNUNET_SERVER_notification_context_create (server, 128);
-}
+ struct GNUNET_MQ_Envelope *env;
+ struct GNUNET_ATS_SessionReleaseMessage *srm;
-
-/**
- * Shutdown scheduling subsystem.
- */
-void
-GAS_scheduling_done ()
-{
- GNUNET_SERVER_notification_context_destroy (nc);
- nc = NULL;
+ 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);
}
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