};
+/**
+ * Linked list of pending reservations.
+ */
+struct GNUNET_ATS_AddressListHandle
+{
+
+ /**
+ * Kept in a DLL.
+ */
+ struct GNUNET_ATS_AddressListHandle *next;
+
+ /**
+ * Kept in a DLL.
+ */
+ struct GNUNET_ATS_AddressListHandle *prev;
+
+ /**
+ * Performance handle
+ */
+ struct GNUNET_ATS_PerformanceHandle *ph;
+
+ /**
+ * Callback
+ */
+ GNUNET_ATS_AddressInformationCallback cb;
+
+ /**
+ * Callback closure
+ */
+ void *cb_cls;
+
+ /**
+ * Target peer.
+ */
+ struct GNUNET_PeerIdentity peer;
+
+ /**
+ * Return all or specific peer only
+ */
+ int all_peers;
+
+ /**
+ * Return all or used address only
+ */
+ int all_addresses;
+
+ /**
+ * Request multiplexing
+ */
+ uint32_t id;
+};
+
+
+
/**
* ATS Handle to obtain and/or modify performance information.
*/
const struct GNUNET_CONFIGURATION_Handle *cfg;
/**
- * Callback to invoke on performance changes.
+ * Callback to invoke when an address has performance changes.
*/
- GNUNET_ATS_PeerInformationCallback infocb;
+ GNUNET_ATS_AddressInformationCallback addr_info_cb;
/**
- * Closure for 'infocb'.
+ * Closure for 'addr_info_cb'.
*/
- void *infocb_cls;
+ void *addr_info_cb_cls;
/**
* Connection to ATS service.
*/
struct GNUNET_ATS_ReservationContext *reservation_tail;
+ /**
+ * Head of linked list of pending address list requests.
+ */
+ struct GNUNET_ATS_AddressListHandle *addresslist_head;
+
+ /**
+ * Tail of linked list of pending address list requests.
+ */
+ struct GNUNET_ATS_AddressListHandle *addresslist_tail;
+
+
/**
* Current request for transmission to ATS.
*/
*/
GNUNET_SCHEDULER_TaskIdentifier task;
+ /**
+ * Monitor request multiplexing
+ */
+ uint32_t monitor_id;
+
+ /**
+ * Request multiplexing
+ */
+ uint32_t id;
};
do_transmit (struct GNUNET_ATS_PerformanceHandle *ph);
+/**
+ * Type of a function to call when we receive a message
+ * from the service.
+ *
+ * @param cls the 'struct GNUNET_ATS_SchedulingHandle'
+ * @param msg message received, NULL on timeout or fatal error
+ */
+static void
+process_ats_message (void *cls, const struct GNUNET_MessageHeader *msg);
+
/**
* We can now transmit a message to ATS. Do it.
*
ret += p->size;
size -= p->size;
GNUNET_CONTAINER_DLL_remove (ph->pending_head, ph->pending_tail, p);
+ if (GNUNET_YES == p->is_init)
+ GNUNET_CLIENT_receive (ph->client, &process_ats_message, ph,
+ GNUNET_TIME_UNIT_FOREVER_REL);
+
GNUNET_free (p);
}
do_transmit (ph);
uint16_t plugin_address_length;
uint16_t plugin_name_length;
uint32_t ats_count;
+ int addr_active;
- if (ph->infocb == NULL)
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
if (ntohs (msg->size) < sizeof (struct PeerInformationMessage))
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
+
pi = (const struct PeerInformationMessage *) msg;
ats_count = ntohl (pi->ats_count);
plugin_address_length = ntohs (pi->address_length);
plugin_name_length = ntohs (pi->plugin_name_length);
+ addr_active = ntohl (pi->address_active);
atsi = (const struct GNUNET_ATS_Information *) &pi[1];
plugin_address = (const char *) &atsi[ats_count];
plugin_name = &plugin_address[plugin_address_length];
GNUNET_break (0);
return GNUNET_SYSERR;
}
- address.peer = pi->peer;
- address.address = plugin_address;
- address.address_length = plugin_address_length;
- address.transport_name = plugin_name;
- ph->infocb (ph->infocb_cls, &address, pi->bandwidth_out, pi->bandwidth_in,
+
+ if (NULL != ph->addr_info_cb)
+ {
+ address.peer = pi->peer;
+ address.address = plugin_address;
+ address.address_length = plugin_address_length;
+ address.transport_name = plugin_name;
+
+ ph->addr_info_cb (ph->addr_info_cb_cls, &address, addr_active, pi->bandwidth_out, pi->bandwidth_in,
atsi, ats_count);
+ }
return GNUNET_OK;
}
}
+/**
+ * We received a reservation result message. Validate and process it.
+ *
+ * @param ph our context with the callback
+ * @param msg the message
+ * @return GNUNET_OK if the message was well-formed
+ */
+static int
+process_ar_message (struct GNUNET_ATS_PerformanceHandle *ph,
+ const struct GNUNET_MessageHeader *msg)
+{
+ const struct PeerInformationMessage *pi;
+ struct GNUNET_ATS_AddressListHandle *alh;
+ struct GNUNET_ATS_AddressListHandle *next;
+ const struct GNUNET_ATS_Information *atsi;
+ const char *plugin_address;
+ const char *plugin_name;
+ struct GNUNET_HELLO_Address address;
+ struct GNUNET_PeerIdentity allzeros;
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_zero;
+ uint16_t plugin_address_length;
+ uint16_t plugin_name_length;
+ uint32_t ats_count;
+ uint32_t active;
+ uint32_t id;
+
+ if (ntohs (msg->size) < sizeof (struct PeerInformationMessage))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ _("Received %s message\n"), "ATS_ADDRESSLIST_RESPONSE");
+
+ pi = (const struct PeerInformationMessage *) msg;
+ id = ntohl (pi->id);
+ ats_count = ntohl (pi->ats_count);
+ active = ntohl (pi->address_active);
+ plugin_address_length = ntohs (pi->address_length);
+ plugin_name_length = ntohs (pi->plugin_name_length);
+ atsi = (const struct GNUNET_ATS_Information *) &pi[1];
+ plugin_address = (const char *) &atsi[ats_count];
+ plugin_name = &plugin_address[plugin_address_length];
+ if ((plugin_address_length + plugin_name_length +
+ ats_count * sizeof (struct GNUNET_ATS_Information) +
+ sizeof (struct PeerInformationMessage) != ntohs (msg->size)) ||
+ (ats_count >
+ GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_ATS_Information))
+ || (plugin_name[plugin_name_length - 1] != '\0'))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+
+ next = ph->addresslist_head;
+ while (NULL != (alh = next))
+ {
+ next = alh->next;
+ if (alh->id == id)
+ break;
+ }
+ if (NULL == alh)
+ {
+ /* was canceled */
+ return GNUNET_SYSERR;
+ }
+
+ memset (&allzeros, '\0', sizeof (allzeros));
+ if ((0 == memcmp (&allzeros, &pi->peer, sizeof (allzeros))) &&
+ (0 == plugin_name_length) &&
+ (0 == plugin_address_length) &&
+ (0 == ats_count))
+ {
+ /* Done */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ _("Received last message for %s \n"), "ATS_ADDRESSLIST_RESPONSE");
+ bandwidth_zero.value__ = htonl (0);
+ if (NULL != alh->cb)
+ alh->cb (ph->addr_info_cb_cls,
+ NULL,
+ GNUNET_NO,
+ bandwidth_zero, bandwidth_zero,
+ NULL, 0);
+ GNUNET_CONTAINER_DLL_remove (ph->addresslist_head, ph->addresslist_tail, alh);
+ GNUNET_free (alh);
+ return GNUNET_OK;
+ }
+
+ address.peer = pi->peer;
+ address.address = plugin_address;
+ address.address_length = plugin_address_length;
+ address.transport_name = plugin_name;
+
+ if ((GNUNET_YES == alh->all_addresses) || (GNUNET_YES == active))
+ {
+ if (NULL != alh->cb)
+ alh->cb (ph->addr_info_cb_cls,
+ &address,
+ active,
+ pi->bandwidth_out, pi->bandwidth_in,
+ atsi, ats_count);
+ }
+ return GNUNET_OK;
+}
+
+
/**
* Type of a function to call when we receive a message
* from the service.
if (GNUNET_OK != process_rr_message (ph, msg))
goto reconnect;
break;
+ case GNUNET_MESSAGE_TYPE_ATS_ADDRESSLIST_RESPONSE:
+ if (GNUNET_OK != process_ar_message (ph, msg))
+ goto reconnect;
+ break;
default:
GNUNET_break (0);
goto reconnect;
- return;
}
GNUNET_CLIENT_receive (ph->client, &process_ats_message, ph,
GNUNET_TIME_UNIT_FOREVER_REL);
return;
reconnect:
- GNUNET_CLIENT_disconnect (ph->client, GNUNET_NO);
+ if (NULL != ph->th)
+ {
+ GNUNET_CLIENT_notify_transmit_ready_cancel (ph->th);
+ ph->th = NULL;
+ }
+ GNUNET_CLIENT_disconnect (ph->client);
ph->client = NULL;
ph->task =
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS, &reconnect_task,
GNUNET_assert (NULL == ph->client);
ph->client = GNUNET_CLIENT_connect ("ats", ph->cfg);
GNUNET_assert (NULL != ph->client);
- GNUNET_CLIENT_receive (ph->client, &process_ats_message, ph,
- GNUNET_TIME_UNIT_FOREVER_REL);
if ((NULL == (p = ph->pending_head)) || (GNUNET_YES != p->is_init))
{
p = GNUNET_malloc (sizeof (struct PendingMessage) +
init->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_START);
init->header.size = htons (sizeof (struct ClientStartMessage));
init->start_flag =
- htonl ((ph->infocb ==
- NULL) ? START_FLAG_PERFORMANCE_NO_PIC :
- START_FLAG_PERFORMANCE_WITH_PIC);
+ htonl ((NULL ==ph->addr_info_cb) ?
+ START_FLAG_PERFORMANCE_NO_PIC : START_FLAG_PERFORMANCE_WITH_PIC);
GNUNET_CONTAINER_DLL_insert (ph->pending_head, ph->pending_tail, p);
}
do_transmit (ph);
* Get handle to access performance API of the ATS subsystem.
*
* @param cfg configuration to use
- * @param infocb function to call on allocation changes, can be NULL
- * @param infocb_cls closure for infocb
+ * @param addr_info_cb callback called when performance characteristics for
+ * an address change
+ * @param addr_info_cb_cls closure for infocb
* @return ats performance context
*/
struct GNUNET_ATS_PerformanceHandle *
GNUNET_ATS_performance_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
- GNUNET_ATS_PeerInformationCallback infocb,
- void *infocb_cls)
+ GNUNET_ATS_AddressInformationCallback addr_info_cb,
+ void *addr_info_cb_cls)
{
struct GNUNET_ATS_PerformanceHandle *ph;
ph = GNUNET_malloc (sizeof (struct GNUNET_ATS_PerformanceHandle));
ph->cfg = cfg;
- ph->infocb = infocb;
- ph->infocb_cls = infocb_cls;
+ ph->addr_info_cb = addr_info_cb;
+ ph->addr_info_cb_cls = addr_info_cb_cls;
+ ph->id = 0;
reconnect (ph);
return ph;
}
-
/**
* Client is done using the ATS performance subsystem, release resources.
*
{
struct PendingMessage *p;
struct GNUNET_ATS_ReservationContext *rc;
+ struct GNUNET_ATS_AddressListHandle *alh;
while (NULL != (p = ph->pending_head))
{
GNUNET_CONTAINER_DLL_remove (ph->pending_head, ph->pending_tail, p);
GNUNET_free (p);
}
+ while (NULL != (alh = ph->addresslist_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (ph->addresslist_head, ph->addresslist_tail,
+ alh);
+ GNUNET_free (alh);
+ }
while (NULL != (rc = ph->reservation_head))
{
GNUNET_CONTAINER_DLL_remove (ph->reservation_head, ph->reservation_tail,
GNUNET_break (NULL == rc->rcb);
GNUNET_free (rc);
}
+
if (GNUNET_SCHEDULER_NO_TASK != ph->task)
{
GNUNET_SCHEDULER_cancel (ph->task);
}
if (NULL != ph->client)
{
- GNUNET_CLIENT_disconnect (ph->client, GNUNET_NO);
+ GNUNET_CLIENT_disconnect (ph->client);
ph->client = NULL;
}
GNUNET_free (ph);
rc->rcb = NULL;
}
+/**
+ * Get information about addresses known to the ATS subsystem.
+ *
+ * @param handle the performance handle to use
+ * @param peer peer idm can be NULL for all peers
+ * @param all GNUNET_YES to get information about all addresses or GNUNET_NO to
+ * get only address currently used
+ * @param infocb callback to call with the addresses,
+ * will callback with address == NULL when done
+ * @param infocb_cls closure for infocb
+ * @return ats performance context
+ */
+struct GNUNET_ATS_AddressListHandle*
+GNUNET_ATS_performance_list_addresses (struct GNUNET_ATS_PerformanceHandle *handle,
+ const struct GNUNET_PeerIdentity *peer,
+ int all,
+ GNUNET_ATS_AddressInformationCallback infocb,
+ void *infocb_cls)
+{
+ struct GNUNET_ATS_AddressListHandle *alh;
+ struct PendingMessage *p;
+ struct AddressListRequestMessage *m;
+
+ GNUNET_assert (NULL != handle);
+ if (NULL == infocb)
+ return NULL;
+
+ alh = GNUNET_malloc (sizeof (struct GNUNET_ATS_AddressListHandle));
+ alh->id = handle->id;
+ handle->id ++;
+ alh->cb = infocb;
+ alh->cb_cls = infocb_cls;
+ alh->ph = handle;
+ alh->all_addresses = all;
+ if (NULL == peer)
+ alh->all_peers = GNUNET_YES;
+ else
+ {
+ alh->all_peers = GNUNET_NO;
+ alh->peer = (*peer);
+ }
+
+ GNUNET_CONTAINER_DLL_insert (handle->addresslist_head, handle->addresslist_tail, alh);
+
+ p = GNUNET_malloc (sizeof (struct PendingMessage) +
+ sizeof (struct AddressListRequestMessage));
+ p->size = sizeof (struct AddressListRequestMessage);
+ m = (struct AddressListRequestMessage *) &p[1];
+ m->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_ADDRESSLIST_REQUEST);
+ m->header.size = htons (sizeof (struct AddressListRequestMessage));
+ m->all = htonl (all);
+ m->id = htonl (alh->id);
+ if (NULL != peer)
+ m->peer = *peer;
+ else
+ {
+ memset (&m->peer, '\0', sizeof (struct GNUNET_PeerIdentity));
+ }
+ GNUNET_CONTAINER_DLL_insert_tail (handle->pending_head, handle->pending_tail, p);
+
+ do_transmit (handle);
+
+ return alh;
+}
+
+
+/**
+ * Cancel a pending address listing operation
+ *
+ * @param handle the GNUNET_ATS_AddressListHandle handle to cancel
+ */
+void
+GNUNET_ATS_performance_list_addresses_cancel (struct GNUNET_ATS_AddressListHandle *handle)
+{
+ GNUNET_assert (NULL != handle);
+
+ GNUNET_CONTAINER_DLL_remove (handle->ph->addresslist_head, handle->ph->addresslist_tail, handle);
+ GNUNET_free (handle);
+}
+
+
+/**
+ * Convert a GNUNET_ATS_PreferenceType to a string
+ *
+ * @param type the preference type
+ * @return a string or NULL if invalid
+ */
+const char *
+GNUNET_ATS_print_preference_type (uint32_t type)
+{
+ char *prefs[GNUNET_ATS_PreferenceCount] = GNUNET_ATS_PreferenceTypeString;
+ if (type < GNUNET_ATS_PreferenceCount)
+ return prefs[type];
+ return NULL;
+}
+
/**
* Change preferences for the given peer. Preference changes are forgotten if peers
* @param ... 0-terminated specification of the desired changes
*/
void
-GNUNET_ATS_change_preference (struct GNUNET_ATS_PerformanceHandle *ph,
+GNUNET_ATS_performance_change_preference (struct GNUNET_ATS_PerformanceHandle *ph,
const struct GNUNET_PeerIdentity *peer, ...)
{
struct PendingMessage *p;
do_transmit (ph);
}
+/**
+ * Send feedback to ATS on how good a the requirements for a peer and a
+ * preference is satisfied by ATS
+ *
+ * @param ph performance handle
+ * @param scope the time interval this valid for: [now - scope .. now]
+ * @param peer identifies the peer
+ * @param ... 0-terminated specification of the desired changes
+ */
+void
+GNUNET_ATS_performance_give_feedback (struct GNUNET_ATS_PerformanceHandle *ph,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_TIME_Relative scope, ...)
+{
+ struct PendingMessage *p;
+ struct FeedbackPreferenceMessage *m;
+ size_t msize;
+ uint32_t count;
+ struct PreferenceInformation *pi;
+ va_list ap;
+ enum GNUNET_ATS_PreferenceKind kind;
+
+ count = 0;
+ va_start (ap, scope);
+ while (GNUNET_ATS_PREFERENCE_END !=
+ (kind = va_arg (ap, enum GNUNET_ATS_PreferenceKind)))
+ {
+ switch (kind)
+ {
+ case GNUNET_ATS_PREFERENCE_BANDWIDTH:
+ count++;
+ (void) va_arg (ap, double);
+
+ break;
+ case GNUNET_ATS_PREFERENCE_LATENCY:
+ count++;
+ (void) va_arg (ap, double);
+
+ break;
+ default:
+ GNUNET_assert (0);
+ }
+ }
+ va_end (ap);
+ msize =
+ count * sizeof (struct PreferenceInformation) +
+ sizeof (struct FeedbackPreferenceMessage);
+ p = GNUNET_malloc (sizeof (struct PendingMessage) + msize);
+ p->size = msize;
+ p->is_init = GNUNET_NO;
+ m = (struct FeedbackPreferenceMessage *) &p[1];
+ m->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_PREFERENCE_FEEDBACK);
+ m->header.size = htons (msize);
+ m->scope = GNUNET_TIME_relative_hton (scope);
+ m->num_feedback = htonl (count);
+ m->peer = *peer;
+ pi = (struct PreferenceInformation *) &m[1];
+ count = 0;
+ va_start (ap, scope);
+ while (GNUNET_ATS_PREFERENCE_END !=
+ (kind = va_arg (ap, enum GNUNET_ATS_PreferenceKind)))
+ {
+ pi[count].preference_kind = htonl (kind);
+ switch (kind)
+ {
+ case GNUNET_ATS_PREFERENCE_BANDWIDTH:
+ pi[count].preference_value = (float) va_arg (ap, double);
+
+ count++;
+ break;
+ case GNUNET_ATS_PREFERENCE_LATENCY:
+ pi[count].preference_value = (float) va_arg (ap, double);
+
+ count++;
+ break;
+ default:
+ GNUNET_assert (0);
+ }
+ }
+ va_end (ap);
+ GNUNET_CONTAINER_DLL_insert_tail (ph->pending_head, ph->pending_tail, p);
+ do_transmit (ph);
+}
+
/* end of ats_api_performance.c */
projects / oweals / gnunet.git / blobdiff