/*
This file is part of GNUnet.
- (C) 2010-2015 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2010-2015 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.
-
- 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.
+ 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/>.
*/
/**
* @file ats/ats_api_scheduling.c
* @brief automatic transport selection and outbound bandwidth determination
* @author Christian Grothoff
* @author Matthias Wachs
+ *
+ * TODO:
+ * - we could avoid a linear scan over the
+ * active addresses in some cases, so if
+ * there is need, we can still optimize here
+ * - we might want to split off the logic to
+ * determine LAN vs. WAN, as it has nothing
+ * to do with accessing the ATS service.
*/
#include "platform.h"
#include "gnunet_ats_service.h"
*/
#define INTERFACE_PROCESSING_INTERVAL GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 2)
+#define LOG(kind,...) GNUNET_log_from(kind, "ats-scheduling-api", __VA_ARGS__)
/**
* Session ID we use if there is no session / slot.
/**
- * Information we track per session.
+ * Information we track per address, incoming or outgoing. It also
+ * doesn't matter if we have a session, any address that ATS is
+ * allowed to suggest right now should be tracked.
*/
-struct SessionRecord
+struct GNUNET_ATS_AddressRecord
{
- /**
- * Identity of the peer (just needed for error checking).
- */
- struct GNUNET_PeerIdentity peer;
-
- /**
- * Session handle.
- */
- struct Session *session;
-
- /**
- * Set to #GNUNET_YES if the slot is used.
- */
- int slot_used;
-};
-
-/**
- * We keep a list of our local networks so we can answer
- * LAN vs. WAN questions. Note: WLAN is not detected yet.
- * (maybe we can do that heuristically based on interface
- * name in the future?)
- */
-struct ATS_Network
-{
/**
- * Kept in a DLL.
+ * Scheduling handle this address record belongs to.
*/
- struct ATS_Network *next;
+ struct GNUNET_ATS_SchedulingHandle *sh;
/**
- * Kept in a DLL.
+ * Address data.
*/
- struct ATS_Network *prev;
+ struct GNUNET_HELLO_Address *address;
/**
- * Network address.
+ * Session handle. NULL if we have an address but no
+ * active session for this address.
*/
- struct sockaddr *network;
+ struct GNUNET_ATS_Session *session;
/**
- * Netmask to determine what is in the LAN.
+ * Performance data about the address.
*/
- struct sockaddr *netmask;
+ struct GNUNET_ATS_PropertiesNBO properties;
/**
- * How long are @e network and @e netmask?
+ * Which slot (index) in the session array does
+ * this record correspond to?
+ * FIXME: a linear search on this is really crappy!
+ * Maybe switch to a 64-bit global counter and be
+ * done with it? Or does that then cause too much
+ * trouble on the ATS-service side?
*/
- socklen_t length;
-};
-
+ uint32_t slot;
-/**
- * Handle for ATS address suggestion requests.
- */
-struct GNUNET_ATS_SuggestHandle
-{
/**
- * ID of the peer for which address suggestion was requested.
+ * We're about to destroy this address record, just ATS does
+ * not know this yet. Once ATS confirms its destruction,
+ * we can clean up.
*/
- struct GNUNET_PeerIdentity id;
+ int in_destroy;
};
*/
void *suggest_cb_cls;
- /**
- * Map with the identities of all the peers for which we would
- * like to have address suggestions. The key is the PID, the
- * value is currently the `struct GNUNET_ATS_SuggestHandle`
- */
- struct GNUNET_CONTAINER_MultiPeerMap *sug_requests;
-
- /**
- * Connection to ATS service.
- */
- struct GNUNET_CLIENT_Connection *client;
-
/**
* Message queue for sending requests to the ATS service.
*/
struct GNUNET_MQ_Handle *mq;
- /**
- * Head of LAN networks list.
- */
- struct ATS_Network *net_head;
-
- /**
- * Tail of LAN networks list.
- */
- struct ATS_Network *net_tail;
-
/**
* Array of session objects (we need to translate them to numbers and back
* for the protocol; the offset in the array is the session number on the
* network). Index 0 is always NULL and reserved to represent the NULL pointer.
* Unused entries are also NULL.
*/
- struct SessionRecord *session_array;
+ struct GNUNET_ATS_AddressRecord **session_array;
/**
* Task to trigger reconnect.
struct GNUNET_SCHEDULER_Task *task;
/**
- * Task for periodically refreshing our LAN network list.
+ * Reconnect backoff delay.
*/
- struct GNUNET_SCHEDULER_Task *interface_task;
+ struct GNUNET_TIME_Relative backoff;
/**
* Size of the @e session_array.
* Re-establish the connection to the ATS service.
*
* @param cls handle to use to re-connect.
- * @param tc scheduler context
*/
static void
-reconnect_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+reconnect_task (void *cls)
{
struct GNUNET_ATS_SchedulingHandle *sh = cls;
GNUNET_MQ_destroy (sh->mq);
sh->mq = NULL;
}
- if (NULL != sh->client)
- {
- GNUNET_CLIENT_disconnect (sh->client);
- sh->client = NULL;
- }
- sh->task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
+ sh->suggest_cb (sh->suggest_cb_cls,
+ NULL, NULL, NULL,
+ GNUNET_BANDWIDTH_ZERO,
+ GNUNET_BANDWIDTH_ZERO);
+ sh->backoff = GNUNET_TIME_STD_BACKOFF (sh->backoff);
+ sh->task = GNUNET_SCHEDULER_add_delayed (sh->backoff,
&reconnect_task,
sh);
}
* @param peer peer the session belongs to
* @return the session object (or NULL)
*/
-static struct Session *
+static struct GNUNET_ATS_AddressRecord *
find_session (struct GNUNET_ATS_SchedulingHandle *sh,
uint32_t session_id,
const struct GNUNET_PeerIdentity *peer)
{
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "ats-scheduling-api",
- "Find session %u from peer %s in %p\n",
- (unsigned int) session_id, GNUNET_i2s (peer), sh);
+ struct GNUNET_ATS_AddressRecord *ar;
if (session_id >= sh->session_array_size)
{
}
if (0 == session_id)
return NULL;
- if (sh->session_array[session_id].session == NULL)
+ ar = sh->session_array[session_id];
+ if (NULL == ar)
{
- GNUNET_break (0 ==
- memcmp (peer, &sh->session_array[session_id].peer,
- sizeof (struct GNUNET_PeerIdentity)));
+ GNUNET_break (0);
return NULL;
}
-
- if (0 !=
- memcmp (peer, &sh->session_array[session_id].peer,
- sizeof (struct GNUNET_PeerIdentity)))
+ if (NULL == ar->address)
{
- GNUNET_break (0);
- force_reconnect (sh);
+ /* address was destroyed in the meantime, this can happen
+ as we communicate asynchronously with the ATS service. */
return NULL;
}
- /* This check exploits the fact that first field of a session object
- * is peer identity.
- */
- if (0 !=
- memcmp (peer, sh->session_array[session_id].session,
- sizeof (struct GNUNET_PeerIdentity)))
+ if (0 != memcmp (peer,
+ &ar->address->peer,
+ sizeof (struct GNUNET_PeerIdentity)))
{
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "ats-scheduling-api",
- "Session %p belongs to peer `%s'\n",
- sh->session_array[session_id].session,
- GNUNET_i2s_full ((struct GNUNET_PeerIdentity *) &sh->session_array[session_id].peer));
-/*
GNUNET_break (0);
- sh->reconnect = GNUNET_YES;
return NULL;
-*/
}
- return sh->session_array[session_id].session;
+ return ar;
}
/**
- * Get an available session ID for the given session object.
+ * Get an available session ID.
*
* @param sh our handle
- * @param session session object
- * @param peer peer the session belongs to
- * @return the session id
+ * @return an unused slot, but never NOT_FOUND (0)
*/
static uint32_t
-find_empty_session_slot (struct GNUNET_ATS_SchedulingHandle *sh,
- struct Session *session,
- const struct GNUNET_PeerIdentity *peer)
+find_empty_session_slot (struct GNUNET_ATS_SchedulingHandle *sh)
{
- unsigned int i;
- unsigned int f;
-
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "ats-scheduling-api",
- "Get session ID for session %p from peer %s in %p\n",
- session,
- GNUNET_i2s (peer),
- sh);
- if (NULL == session)
- return NOT_FOUND;
- f = 0;
- for (i = 1; i < sh->session_array_size; i++)
- {
- if ((f == 0) && (sh->session_array[i].slot_used == GNUNET_NO))
- f = i;
- }
- if (f == 0)
+ static uint32_t off;
+ uint32_t i;
+
+ GNUNET_assert (0 != sh->session_array_size);
+ i = 0;
+ while ( ( (NOT_FOUND == off) ||
+ (NULL != sh->session_array[off % sh->session_array_size]) ) &&
+ (i < sh->session_array_size) )
{
- f = sh->session_array_size;
- GNUNET_array_grow (sh->session_array, sh->session_array_size,
- sh->session_array_size * 2);
+ off++;
+ i++;
}
- GNUNET_assert (f > 0);
- sh->session_array[f].session = session;
- sh->session_array[f].peer = *peer;
- sh->session_array[f].slot_used = GNUNET_YES;
-
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "ats-scheduling-api",
- "Assigning session ID %u for session %p of peer %s in %p\n", f,
- session, GNUNET_i2s (peer), sh);
-
- return f;
+ if ( (NOT_FOUND != off % sh->session_array_size) &&
+ (NULL == sh->session_array[off % sh->session_array_size]) )
+ return off;
+ i = sh->session_array_size;
+ GNUNET_array_grow (sh->session_array,
+ sh->session_array_size,
+ sh->session_array_size * 2);
+ return i;
}
*
* @param sh our handle
* @param session session object
- * @param peer peer the session belongs to
+ * @param address the address we are looking for
* @return the session id or NOT_FOUND for error
*/
static uint32_t
find_session_id (struct GNUNET_ATS_SchedulingHandle *sh,
- struct Session *session,
- const struct GNUNET_PeerIdentity *peer)
+ struct GNUNET_ATS_Session *session,
+ const struct GNUNET_HELLO_Address *address)
{
- unsigned int i;
- char * p2;
+ uint32_t i;
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "ats-scheduling-api",
- "Get session ID for session %p from peer %s in %p\n", session,
- GNUNET_i2s (peer), sh);
-
- if (NULL == session)
+ if (NULL == address)
+ {
+ GNUNET_break (0);
return NOT_FOUND;
+ }
for (i = 1; i < sh->session_array_size; i++)
- {
- if (session == sh->session_array[i].session)
- {
- if (0 != memcmp (peer, &sh->session_array[i].peer,
- sizeof (struct GNUNET_PeerIdentity)))
- {
- p2 = strdup (GNUNET_i2s (&sh->session_array[i].peer));
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, "ats-scheduling-api",
- "Session %p did not match: old session was for peer `%s' new session is for `%s'\n",
- session, GNUNET_i2s (peer), p2);
- GNUNET_free (p2);
- return NOT_FOUND;
- }
+ if ( (NULL != sh->session_array[i]) &&
+ (GNUNET_NO == sh->session_array[i]->in_destroy) &&
+ ( (session == sh->session_array[i]->session) ||
+ (NULL == sh->session_array[i]->session) ) &&
+ (0 == memcmp (&address->peer,
+ &sh->session_array[i]->address->peer,
+ sizeof (struct GNUNET_PeerIdentity))) &&
+ (0 == GNUNET_HELLO_address_cmp (address,
+ sh->session_array[i]->address)) )
return i;
- }
- }
return NOT_FOUND;
}
-/**
- * Remove the session of the given session ID from the session
- * table (it is no longer valid).
- *
- * @param sh our handle
- * @param session_id identifies session that is no longer valid
- * @param peer peer the session belongs to
- */
-static void
-remove_session (struct GNUNET_ATS_SchedulingHandle *sh,
- uint32_t session_id,
- const struct GNUNET_PeerIdentity *peer)
-{
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "ats-scheduling-api",
- "Release sessionID %u from peer %s in %p\n",
- (unsigned int) session_id,
- GNUNET_i2s (peer),
- sh);
-
- if (0 == session_id)
- return;
-
- GNUNET_assert (session_id < sh->session_array_size);
- GNUNET_assert (GNUNET_YES == sh->session_array[session_id].slot_used);
- GNUNET_assert (0 == memcmp (peer,
- &sh->session_array[session_id].peer,
- sizeof (struct GNUNET_PeerIdentity)));
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "ats-scheduling-api",
- "Session %p for peer `%s' removed from slot %u \n",
- sh->session_array[session_id].session,
- GNUNET_i2s (peer),
- session_id);
- sh->session_array[session_id].session = NULL;
-}
-
-
/**
* Release the session slot from the session table (ATS service is
* also done using it).
*
* @param sh our handle
* @param session_id identifies session that is no longer valid
- * @param peer peer the session belongs to
*/
static void
release_session (struct GNUNET_ATS_SchedulingHandle *sh,
- uint32_t session_id,
- const struct GNUNET_PeerIdentity *peer)
+ uint32_t session_id)
{
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "ats-scheduling-api",
- "Release sessionID %u from peer %s in %p\n",
- (unsigned int) session_id,
- GNUNET_i2s (peer),
- sh);
+ struct GNUNET_ATS_AddressRecord *ar;
+
+ if (NOT_FOUND == session_id)
+ return;
if (session_id >= sh->session_array_size)
{
GNUNET_break (0);
return;
}
/* this slot should have been removed from remove_session before */
- GNUNET_assert (sh->session_array[session_id].session == NULL);
-
- if (0 !=
- memcmp (peer, &sh->session_array[session_id].peer,
- sizeof (struct GNUNET_PeerIdentity)))
+ ar = sh->session_array[session_id];
+ if (NULL != ar->session)
{
GNUNET_break (0);
force_reconnect (sh);
return;
}
- sh->session_array[session_id].slot_used = GNUNET_NO;
- memset (&sh->session_array[session_id].peer,
- 0,
- sizeof (struct GNUNET_PeerIdentity));
+ GNUNET_HELLO_address_free (ar->address);
+ GNUNET_free (ar);
+ sh->session_array[session_id] = NULL;
}
* message from the service.
*
* @param cls the `struct GNUNET_ATS_SchedulingHandle`
- * @param msg message received, NULL on timeout or fatal error
+ * @param srm message received
*/
static void
-process_ats_session_release_message (void *cls,
- const struct GNUNET_MessageHeader *msg)
+handle_ats_session_release (void *cls,
+ const struct GNUNET_ATS_SessionReleaseMessage *srm)
{
struct GNUNET_ATS_SchedulingHandle *sh = cls;
- const struct SessionReleaseMessage *srm;
-
- srm = (const struct SessionReleaseMessage *) msg;
+ /* Note: peer field in srm not necessary right now,
+ but might be good to have in the future */
release_session (sh,
- ntohl (srm->session_id),
- &srm->peer);
+ ntohl (srm->session_id));
}
* message from the service.
*
* @param cls the `struct GNUNET_ATS_SchedulingHandle`
- * @param msg message received, NULL on timeout or fatal error
+ * @param m message received
*/
static void
-process_ats_address_suggestion_message (void *cls,
- const struct GNUNET_MessageHeader *msg)
+handle_ats_address_suggestion (void *cls,
+ const struct AddressSuggestionMessage *m)
{
struct GNUNET_ATS_SchedulingHandle *sh = cls;
- const struct AddressSuggestionMessage *m;
- const struct GNUNET_ATS_Information *atsi;
- const char *plugin_address;
- const char *plugin_name;
- uint16_t plugin_address_length;
- uint16_t plugin_name_length;
- uint32_t ats_count;
- struct GNUNET_HELLO_Address address;
- struct Session *s;
-
- if (ntohs (msg->size) <= sizeof (struct AddressSuggestionMessage))
+ struct GNUNET_ATS_AddressRecord *ar;
+ uint32_t session_id;
+
+ session_id = ntohl (m->session_id);
+ if (0 == session_id)
{
GNUNET_break (0);
force_reconnect (sh);
return;
}
- m = (const struct AddressSuggestionMessage *) msg;
- ats_count = ntohl (m->ats_count);
- plugin_address_length = ntohs (m->address_length);
- atsi = (const struct GNUNET_ATS_Information *) &m[1];
- plugin_address = (const char *) &atsi[ats_count];
- plugin_name = &plugin_address[plugin_address_length];
- plugin_name_length = ntohs (m->plugin_name_length);
- if ((plugin_address_length + plugin_name_length +
- ats_count * sizeof (struct GNUNET_ATS_Information) +
- sizeof (struct AddressSuggestionMessage) != ntohs (msg->size)) ||
- (ats_count >
- GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_ATS_Information))
- || (plugin_name[plugin_name_length - 1] != '\0'))
+ ar = find_session (sh,
+ session_id,
+ &m->peer);
+ if (NULL == ar)
{
GNUNET_break (0);
force_reconnect (sh);
return;
}
- uint32_t session_id = ntohl (m->session_id);
-
- if (session_id == 0)
- s = NULL;
- else
+ if (NULL == sh->suggest_cb)
+ return;
+ if (GNUNET_YES == ar->in_destroy)
{
- s = find_session (sh, session_id, &m->peer);
- if (NULL == s)
+ /* ignore suggestion, as this address is dying, unless BW is 0,
+ in that case signal 'disconnect' via BW 0 */
+ if ( (0 == ntohl (m->bandwidth_out.value__)) &&
+ (0 == ntohl (m->bandwidth_in.value__)) )
{
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "ats-scheduling-api",
- "ATS tries to use outdated session `%s'\n",
- GNUNET_i2s (&m->peer));
- return;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "ATS suggests disconnect from peer `%s' with BW %u/%u\n",
+ GNUNET_i2s (&ar->address->peer),
+ (unsigned int) ntohl (m->bandwidth_out.value__),
+ (unsigned int) ntohl (m->bandwidth_in.value__));
+ sh->suggest_cb (sh->suggest_cb_cls,
+ &m->peer,
+ NULL,
+ NULL,
+ m->bandwidth_out,
+ m->bandwidth_in);
}
- }
- if (NULL == sh->suggest_cb)
return;
- address.peer = m->peer;
- address.address = plugin_address;
- address.address_length = plugin_address_length;
- address.transport_name = plugin_name;
- address.local_info = ntohl(m->address_local_info);
-
- if ((s == NULL) && (0 == address.address_length))
+ }
+ if ( (NULL == ar->session) &&
+ (GNUNET_HELLO_address_check_option (ar->address,
+ GNUNET_HELLO_ADDRESS_INFO_INBOUND)) )
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "ATS returned invalid address for peer `%s' transport `%s' address length %i, session_id %i\n",
- GNUNET_i2s (&address.peer),
- address.transport_name,
- plugin_address_length,
- session_id);
- GNUNET_break_op (0);
+ GNUNET_break (0);
return;
}
+ sh->backoff = GNUNET_TIME_UNIT_ZERO;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "ATS suggests address slot %u for peer `%s' using plugin %s\n",
+ ar->slot,
+ GNUNET_i2s (&ar->address->peer),
+ ar->address->transport_name);
sh->suggest_cb (sh->suggest_cb_cls,
&m->peer,
- &address,
- s,
+ ar->address,
+ ar->session,
m->bandwidth_out,
- m->bandwidth_in,
- atsi, ats_count);
+ m->bandwidth_in);
}
{
struct GNUNET_ATS_SchedulingHandle *sh = cls;
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- "ATS connection died (code %d), reconnecting\n",
- (int) error);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "ATS connection died (code %d), reconnecting\n",
+ (int) error);
force_reconnect (sh);
}
/**
- * Re-establish the connection to the ATS service.
+ * Generate and transmit the `struct AddressAddMessage` for the given
+ * address record.
*
- * @param sh handle to use to re-connect.
+ * @param sh the scheduling handle to use for transmission
+ * @param ar the address to inform the ATS service about
*/
static void
-reconnect (struct GNUNET_ATS_SchedulingHandle *sh)
+send_add_address_message (struct GNUNET_ATS_SchedulingHandle *sh,
+ const struct GNUNET_ATS_AddressRecord *ar)
{
- static const struct GNUNET_MQ_MessageHandler handlers[] =
- { { &process_ats_session_release_message,
- GNUNET_MESSAGE_TYPE_ATS_SESSION_RELEASE,
- sizeof (struct SessionReleaseMessage) },
- { &process_ats_address_suggestion_message,
- GNUNET_MESSAGE_TYPE_ATS_ADDRESS_SUGGESTION,
- 0 },
- { NULL, 0, 0 } };
struct GNUNET_MQ_Envelope *ev;
- struct ClientStartMessage *init;
+ struct AddressAddMessage *m;
+ char *pm;
+ size_t namelen;
+ size_t msize;
- GNUNET_assert (NULL == sh->client);
- sh->client = GNUNET_CLIENT_connect ("ats", sh->cfg);
- if (NULL == sh->client)
- {
- force_reconnect (sh);
- return;
- }
- sh->mq = GNUNET_MQ_queue_for_connection_client (sh->client,
- handlers,
- &error_handler,
- sh);
- ev = GNUNET_MQ_msg (init,
- GNUNET_MESSAGE_TYPE_ATS_START);
- init->start_flag = htonl (START_FLAG_SCHEDULING);
+ if (NULL == sh->mq)
+ return; /* disconnected, skip for now */
+ GNUNET_break (GNUNET_ATS_NET_UNSPECIFIED != ar->properties.scope);
+ namelen = strlen (ar->address->transport_name) + 1;
+ msize = ar->address->address_length + namelen;
+ ev = GNUNET_MQ_msg_extra (m, msize, GNUNET_MESSAGE_TYPE_ATS_ADDRESS_ADD);
+ m->peer = ar->address->peer;
+ m->address_length = htons (ar->address->address_length);
+ m->address_local_info = htonl ((uint32_t) ar->address->local_info);
+ m->plugin_name_length = htons (namelen);
+ m->session_id = htonl (ar->slot);
+ m->properties = ar->properties;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Adding address for peer `%s', plugin `%s', session %p slot %u\n",
+ GNUNET_i2s (&ar->address->peer),
+ ar->address->transport_name,
+ ar->session,
+ ar->slot);
+ pm = (char *) &m[1];
+ GNUNET_memcpy (pm,
+ ar->address->address,
+ ar->address->address_length);
+ if (NULL != ar->address->transport_name)
+ GNUNET_memcpy (&pm[ar->address->address_length],
+ ar->address->transport_name,
+ namelen);
GNUNET_MQ_send (sh->mq, ev);
- // FIXME: iterate over addresses...
- // FIXME: iterate over peermap for address suggestion requests!
-}
-
-
-/**
- * Delete all entries from the current network list.
- *
- * @param sh scheduling handle to clean up
- */
-static void
-delete_networks (struct GNUNET_ATS_SchedulingHandle *sh)
-{
- struct ATS_Network *cur;
-
- while (NULL != (cur = sh->net_head))
- {
- GNUNET_CONTAINER_DLL_remove (sh->net_head,
- sh->net_tail,
- cur);
- GNUNET_free (cur);
- }
-}
-
-
-/**
- * Function invoked for each interface found. Adds the interface's
- * network addresses to the respective DLL, so we can distinguish
- * between LAN and WAN.
- *
- * @param cls closure
- * @param name name of the interface (can be NULL for unknown)
- * @param isDefault is this presumably the default interface
- * @param addr address of this interface (can be NULL for unknown or unassigned)
- * @param broadcast_addr the broadcast address (can be NULL for unknown or unassigned)
- * @param netmask the network mask (can be NULL for unknown or unassigned)
- * @param addrlen length of the address
- * @return #GNUNET_OK to continue iteration
- */
-static int
-interface_proc (void *cls,
- const char *name,
- int isDefault,
- const struct sockaddr *addr,
- const struct sockaddr *broadcast_addr,
- const struct sockaddr *netmask,
- socklen_t addrlen)
-{
- struct GNUNET_ATS_SchedulingHandle *sh = cls;
- /* Calculate network */
- struct ATS_Network *net = NULL;
-
- /* Skipping IPv4 loopback addresses since we have special check */
- if (addr->sa_family == AF_INET)
- {
- const struct sockaddr_in *a4 = (const struct sockaddr_in *) addr;
-
- if ((a4->sin_addr.s_addr & htonl(0xff000000)) == htonl (0x7f000000))
- return GNUNET_OK;
- }
- /* Skipping IPv6 loopback addresses since we have special check */
- if (addr->sa_family == AF_INET6)
- {
- const struct sockaddr_in6 *a6 = (const struct sockaddr_in6 *) addr;
- if (IN6_IS_ADDR_LOOPBACK (&a6->sin6_addr))
- return GNUNET_OK;
- }
-
- if (addr->sa_family == AF_INET)
- {
- const struct sockaddr_in *addr4 = (const struct sockaddr_in *) addr;
- const struct sockaddr_in *netmask4 = (const struct sockaddr_in *) netmask;
- struct sockaddr_in *tmp;
- struct sockaddr_in network4;
-
- net = GNUNET_malloc (sizeof (struct ATS_Network) + 2 * sizeof (struct sockaddr_in));
- tmp = (struct sockaddr_in *) &net[1];
- net->network = (struct sockaddr *) &tmp[0];
- net->netmask = (struct sockaddr *) &tmp[1];
- net->length = addrlen;
-
- memset (&network4, 0, sizeof (network4));
- network4.sin_family = AF_INET;
-#if HAVE_SOCKADDR_IN_SIN_LEN
- network4.sin_len = sizeof (network4);
-#endif
- network4.sin_addr.s_addr = (addr4->sin_addr.s_addr & netmask4->sin_addr.s_addr);
-
- memcpy (net->netmask, netmask4, sizeof (struct sockaddr_in));
- memcpy (net->network, &network4, sizeof (struct sockaddr_in));
- }
-
- if (addr->sa_family == AF_INET6)
- {
- const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6 *) addr;
- const struct sockaddr_in6 *netmask6 = (const struct sockaddr_in6 *) netmask;
- struct sockaddr_in6 * tmp;
- struct sockaddr_in6 network6;
-
- net = GNUNET_malloc (sizeof (struct ATS_Network) + 2 * sizeof (struct sockaddr_in6));
- tmp = (struct sockaddr_in6 *) &net[1];
- net->network = (struct sockaddr *) &tmp[0];
- net->netmask = (struct sockaddr *) &tmp[1];
- net->length = addrlen;
-
- memset (&network6, 0, sizeof (network6));
- network6.sin6_family = AF_INET6;
-#if HAVE_SOCKADDR_IN_SIN_LEN
- network6.sin6_len = sizeof (network6);
-#endif
- unsigned int c = 0;
- uint32_t *addr_elem = (uint32_t *) &addr6->sin6_addr;
- uint32_t *mask_elem = (uint32_t *) &netmask6->sin6_addr;
- uint32_t *net_elem = (uint32_t *) &network6.sin6_addr;
- for (c = 0; c < 4; c++)
- net_elem[c] = addr_elem[c] & mask_elem[c];
-
- memcpy (net->netmask, netmask6, sizeof (struct sockaddr_in6));
- memcpy (net->network, &network6, sizeof (struct sockaddr_in6));
- }
- if (NULL == net)
- return GNUNET_OK; /* odd / unsupported address family */
-
- /* Store in list */
-#if VERBOSE_ATS
- char * netmask = GNUNET_strdup (GNUNET_a2s((struct sockaddr *) net->netmask, addrlen));
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Adding network `%s', netmask `%s'\n",
- GNUNET_a2s ((struct sockaddr *) net->network,
- addrlen),
- netmask);
- GNUNET_free (netmask);
-#endif
- GNUNET_CONTAINER_DLL_insert (sh->net_head,
- sh->net_tail,
- net);
-
- return GNUNET_OK;
}
/**
- * Periodically get list of network addresses from our interfaces.
+ * Re-establish the connection to the ATS service.
*
- * @param cls closure
- * @param tc Task context
+ * @param sh handle to use to re-connect.
*/
static void
-get_addresses (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct GNUNET_ATS_SchedulingHandle *sh = cls;
-
- sh->interface_task = NULL;
- delete_networks (sh);
- GNUNET_OS_network_interfaces_list (&interface_proc,
- sh);
- sh->interface_task = GNUNET_SCHEDULER_add_delayed (INTERFACE_PROCESSING_INTERVAL,
- &get_addresses,
- sh);
-}
-
-
-/**
- * Convert a `enum GNUNET_ATS_Network_Type` to a string
- *
- * @param net the network type
- * @return a string or NULL if invalid
- */
-const char *
-GNUNET_ATS_print_network_type (enum GNUNET_ATS_Network_Type net)
-{
- switch (net)
- {
- case GNUNET_ATS_NET_UNSPECIFIED:
- return "UNSPECIFIED";
- case GNUNET_ATS_NET_LOOPBACK:
- return "LOOPBACK";
- case GNUNET_ATS_NET_LAN:
- return "LAN";
- case GNUNET_ATS_NET_WAN:
- return "WAN";
- case GNUNET_ATS_NET_WLAN:
- return "WLAN";
- case GNUNET_ATS_NET_BT:
- return "BLUETOOTH";
- default:
- return NULL;
- }
-}
-
-
-/**
- * Convert a ATS property to a string
- *
- * @param type the property type
- * @return a string or NULL if invalid
- */
-const char *
-GNUNET_ATS_print_property_type (enum GNUNET_ATS_Property type)
+reconnect (struct GNUNET_ATS_SchedulingHandle *sh)
{
- switch (type)
+ struct GNUNET_MQ_MessageHandler handlers[] = {
+ GNUNET_MQ_hd_fixed_size (ats_session_release,
+ GNUNET_MESSAGE_TYPE_ATS_SESSION_RELEASE,
+ struct GNUNET_ATS_SessionReleaseMessage,
+ sh),
+ GNUNET_MQ_hd_fixed_size (ats_address_suggestion,
+ GNUNET_MESSAGE_TYPE_ATS_ADDRESS_SUGGESTION,
+ struct AddressSuggestionMessage,
+ sh),
+ GNUNET_MQ_handler_end ()
+ };
+ struct GNUNET_MQ_Envelope *ev;
+ struct ClientStartMessage *init;
+ unsigned int i;
+ struct GNUNET_ATS_AddressRecord *ar;
+
+ GNUNET_assert (NULL == sh->mq);
+ sh->mq = GNUNET_CLIENT_connect (sh->cfg,
+ "ats",
+ handlers,
+ &error_handler,
+ sh);
+ if (NULL == sh->mq)
{
- case GNUNET_ATS_ARRAY_TERMINATOR:
- return "TERMINATOR";
- case GNUNET_ATS_UTILIZATION_OUT:
- return "UTILIZATION_UP";
- case GNUNET_ATS_UTILIZATION_IN:
- return "UTILIZATION_DOWN";
- case GNUNET_ATS_UTILIZATION_PAYLOAD_OUT:
- return "UTILIZATION_PAYLOAD_UP";
- case GNUNET_ATS_UTILIZATION_PAYLOAD_IN:
- return "UTILIZATION_PAYLOAD_DOWN";
- case GNUNET_ATS_NETWORK_TYPE:
- return "NETWORK_TYPE";
- case GNUNET_ATS_QUALITY_NET_DELAY:
- return "DELAY";
- case GNUNET_ATS_QUALITY_NET_DISTANCE:
- return "DISTANCE";
- case GNUNET_ATS_COST_WAN:
- return "COST_WAN";
- case GNUNET_ATS_COST_LAN:
- return "COST_LAN";
- case GNUNET_ATS_COST_WLAN:
- return "COST_WLAN";
- default:
- return NULL;
+ GNUNET_break (0);
+ force_reconnect (sh);
+ return;
}
-}
-
-
-/**
- * Returns where the address is located: LAN or WAN or ...
- *
- * @param sh the scheduling handle
- * @param addr address
- * @param addrlen address length
- * @return type of the network the address belongs to
- */
-enum GNUNET_ATS_Network_Type
-GNUNET_ATS_address_get_type (struct GNUNET_ATS_SchedulingHandle *sh,
- const struct sockaddr *addr,
- socklen_t addrlen)
-{
- struct ATS_Network *cur = sh->net_head;
- enum GNUNET_ATS_NetworkType type = GNUNET_ATS_NET_UNSPECIFIED;
-
- switch (addr->sa_family)
- {
- case AF_UNIX:
- type = GNUNET_ATS_NET_LOOPBACK;
- break;
- case AF_INET:
- {
- const struct sockaddr_in *a4 = (const struct sockaddr_in *) addr;
-
- if ((a4->sin_addr.s_addr & htonl(0xff000000)) == htonl (0x7f000000))
- type = GNUNET_ATS_NET_LOOPBACK;
- break;
- }
- case AF_INET6:
- {
- const struct sockaddr_in6 *a6 = (const struct sockaddr_in6 *) addr;
-
- if (IN6_IS_ADDR_LOOPBACK (&a6->sin6_addr))
- type = GNUNET_ATS_NET_LOOPBACK;
- break;
- }
- default:
- GNUNET_break (0);
- break;
- }
-
- /* Check local networks */
- while ((NULL != cur) && (GNUNET_ATS_NET_UNSPECIFIED == type))
+ ev = GNUNET_MQ_msg (init,
+ GNUNET_MESSAGE_TYPE_ATS_START);
+ init->start_flag = htonl (START_FLAG_SCHEDULING);
+ GNUNET_MQ_send (sh->mq, ev);
+ if (NULL == sh->mq)
+ return;
+ for (i=0;i<sh->session_array_size;i++)
{
- if (addrlen != cur->length)
- {
- cur = cur->next;
+ ar = sh->session_array[i];
+ if (NULL == ar)
continue;
- }
- if (addr->sa_family == AF_INET)
- {
- const struct sockaddr_in *a4 = (const struct sockaddr_in *) addr;
- const struct sockaddr_in *net4 = (const struct sockaddr_in *) cur->network;
- const struct sockaddr_in *mask4 = (const struct sockaddr_in *) cur->netmask;
-
- if (((a4->sin_addr.s_addr & mask4->sin_addr.s_addr)) == net4->sin_addr.s_addr)
- type = GNUNET_ATS_NET_LAN;
- }
- if (addr->sa_family == AF_INET6)
- {
- const struct sockaddr_in6 *a6 = (const struct sockaddr_in6 *) addr;
- const struct sockaddr_in6 *net6 = (const struct sockaddr_in6 *) cur->network;
- const struct sockaddr_in6 *mask6 = (const struct sockaddr_in6 *) cur->netmask;
-
- int res = GNUNET_YES;
- int c = 0;
- uint32_t *addr_elem = (uint32_t *) &a6->sin6_addr;
- uint32_t *mask_elem = (uint32_t *) &mask6->sin6_addr;
- uint32_t *net_elem = (uint32_t *) &net6->sin6_addr;
- for (c = 0; c < 4; c++)
- if ((addr_elem[c] & mask_elem[c]) != net_elem[c])
- res = GNUNET_NO;
-
- if (res == GNUNET_YES)
- type = GNUNET_ATS_NET_LAN;
- }
- cur = cur->next;
+ send_add_address_message (sh, ar);
+ if (NULL == sh->mq)
+ return;
}
-
- /* no local network found for this address, default: WAN */
- if (type == GNUNET_ATS_NET_UNSPECIFIED)
- type = GNUNET_ATS_NET_WAN;
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "ats-scheduling-api",
- "`%s' is in network `%s'\n",
- GNUNET_a2s (addr,
- addrlen),
- GNUNET_ATS_print_network_type (type));
- return type;
}
GNUNET_array_grow (sh->session_array,
sh->session_array_size,
4);
- sh->sug_requests = GNUNET_CONTAINER_multipeermap_create (32,
- GNUNET_YES);
- GNUNET_OS_network_interfaces_list (&interface_proc,
- sh);
- sh->interface_task = GNUNET_SCHEDULER_add_delayed (INTERFACE_PROCESSING_INTERVAL,
- &get_addresses,
- sh);
reconnect (sh);
return sh;
}
-/**
- * Function called to free all `struct GNUNET_ATS_SuggestHandles`
- * in the map.
- *
- * @param cls NULL
- * @param key the key
- * @param value the value to free
- * @return #GNUNET_OK (continue to iterate)
- */
-static int
-free_sug_handle (void *cls,
- const struct GNUNET_PeerIdentity *key,
- void *value)
-{
- struct GNUNET_ATS_SuggestHandle *cur = value;
-
- GNUNET_free (cur);
- return GNUNET_OK;
-}
-
-
-
/**
* Client is done with ATS scheduling, release resources.
*
void
GNUNET_ATS_scheduling_done (struct GNUNET_ATS_SchedulingHandle *sh)
{
+ struct GNUNET_ATS_AddressRecord *ar;
+ unsigned int i;
+
if (NULL != sh->mq)
{
GNUNET_MQ_destroy (sh->mq);
sh->mq = NULL;
}
- if (NULL != sh->client)
- {
- GNUNET_CLIENT_disconnect (sh->client);
- sh->client = NULL;
- }
if (NULL != sh->task)
{
GNUNET_SCHEDULER_cancel (sh->task);
sh->task = NULL;
}
- GNUNET_CONTAINER_multipeermap_iterate (sh->sug_requests,
- &free_sug_handle,
- NULL);
- GNUNET_CONTAINER_multipeermap_destroy (sh->sug_requests);
- if (NULL != sh->interface_task)
+ for (i=0;i<sh->session_array_size;i++)
{
- GNUNET_SCHEDULER_cancel (sh->interface_task);
- sh->interface_task = NULL;
+ if (NULL != (ar = sh->session_array[i]))
+ {
+ GNUNET_HELLO_address_free (ar->address);
+ GNUNET_free (ar);
+ sh->session_array[i] = NULL;
+ }
}
- delete_networks (sh);
GNUNET_array_grow (sh->session_array,
sh->session_array_size,
0);
}
-/**
- * We would like to reset the address suggestion block time for this
- * peer
- *
- * @param sh handle
- * @param peer identity of the peer we want to reset
- */
-void
-GNUNET_ATS_reset_backoff (struct GNUNET_ATS_SchedulingHandle *sh,
- const struct GNUNET_PeerIdentity *peer)
-{
- struct GNUNET_MQ_Envelope *ev;
- struct ResetBackoffMessage *m;
-
- ev = GNUNET_MQ_msg (m, GNUNET_MESSAGE_TYPE_ATS_RESET_BACKOFF);
- m->reserved = htonl (0);
- m->peer = *peer;
- GNUNET_MQ_send (sh->mq, ev);
-}
-
-
-/**
- * We would like to receive address suggestions for a peer. ATS will
- * respond with a call to the continuation immediately containing an address or
- * no address if none is available. ATS can suggest more addresses until we call
- * #GNUNET_ATS_suggest_address_cancel().
- *
- * @param sh handle
- * @param peer identity of the peer we need an address for
- * @return suggest handle
- */
-struct GNUNET_ATS_SuggestHandle *
-GNUNET_ATS_suggest_address (struct GNUNET_ATS_SchedulingHandle *sh,
- const struct GNUNET_PeerIdentity *peer)
-{
- struct GNUNET_MQ_Envelope *ev;
- struct RequestAddressMessage *m;
- struct GNUNET_ATS_SuggestHandle *s;
-
- s = GNUNET_new (struct GNUNET_ATS_SuggestHandle);
- s->id = *peer;
- GNUNET_break (GNUNET_OK ==
- GNUNET_CONTAINER_multipeermap_put (sh->sug_requests,
- &s->id,
- s,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
- if (NULL == sh->mq)
- return s;
- ev = GNUNET_MQ_msg (m, GNUNET_MESSAGE_TYPE_ATS_REQUEST_ADDRESS);
- m->reserved = htonl (0);
- m->peer = *peer;
- GNUNET_MQ_send (sh->mq, ev);
- return s;
-}
-
-
-/**
- * We would like to stop receiving address updates for this peer
- *
- * @param sh handle
- * @param peer identity of the peer
- */
-void
-GNUNET_ATS_suggest_address_cancel (struct GNUNET_ATS_SchedulingHandle *sh,
- const struct GNUNET_PeerIdentity *peer)
-{
- struct GNUNET_MQ_Envelope *ev;
- struct RequestAddressMessage *m;
- struct GNUNET_ATS_SuggestHandle *s;
-
- s = GNUNET_CONTAINER_multipeermap_get (sh->sug_requests,
- peer);
- if (NULL == s)
- {
- GNUNET_break (0);
- return;
- }
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_multipeermap_remove (sh->sug_requests,
- &s->id,
- s));
- GNUNET_free (s);
- if (NULL == sh->mq)
- return;
- ev = GNUNET_MQ_msg (m, GNUNET_MESSAGE_TYPE_ATS_REQUEST_ADDRESS_CANCEL);
- m->reserved = htonl (0);
- m->peer = *peer;
- GNUNET_MQ_send (sh->mq, ev);
-}
-
-
-/**
- * Test if a address and a session is known to ATS
- *
- * @param sh the scheduling handle
- * @param address the address
- * @param session the session
- * @return #GNUNET_YES or #GNUNET_NO
- */
-int
-GNUNET_ATS_session_known (struct GNUNET_ATS_SchedulingHandle *sh,
- const struct GNUNET_HELLO_Address *address,
- struct Session *session)
-{
- if (NULL == session)
- return GNUNET_NO;
- if (NOT_FOUND != find_session_id (sh,
- session,
- &address->peer))
- return GNUNET_YES; /* Exists */
- return GNUNET_NO;
-}
-
-
/**
* We have a new address ATS should know. Addresses have to be added
* with this function before they can be: updated, set in use and
* @param sh handle
* @param address the address
* @param session session handle, can be NULL
- * @param ats performance data for the address
- * @param ats_count number of performance records in @a ats
- * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
+ * @param prop performance data for the address
+ * @return handle to the address representation inside ATS, NULL
+ * on error (i.e. ATS knows this exact address already)
*/
-int
+struct GNUNET_ATS_AddressRecord *
GNUNET_ATS_address_add (struct GNUNET_ATS_SchedulingHandle *sh,
const struct GNUNET_HELLO_Address *address,
- struct Session *session,
- const struct GNUNET_ATS_Information *ats,
- uint32_t ats_count)
+ struct GNUNET_ATS_Session *session,
+ const struct GNUNET_ATS_Properties *prop)
{
- struct GNUNET_MQ_Envelope *ev;
- struct AddressUpdateMessage *m;
- struct GNUNET_ATS_Information *am;
- char *pm;
+ struct GNUNET_ATS_AddressRecord *ar;
size_t namelen;
size_t msize;
- uint32_t s = 0;
+ uint32_t s;
if (NULL == address)
{
+ /* we need a valid address */
GNUNET_break (0);
- return GNUNET_SYSERR;
+ return NULL;
}
-
- namelen = (NULL == address->transport_name)
- ? 0
- : strlen (address->transport_name) + 1;
-
- msize = address->address_length +
- ats_count * sizeof (struct GNUNET_ATS_Information) + namelen;
- if ((msize + sizeof (struct AddressUpdateMessage) >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (address->address_length >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (namelen >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (ats_count >=
- GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_ATS_Information)))
+ GNUNET_break (GNUNET_ATS_NET_UNSPECIFIED != prop->scope);
+ namelen = strlen (address->transport_name) + 1;
+ msize = address->address_length + namelen;
+ if ((msize + sizeof (struct AddressUpdateMessage) >= GNUNET_MAX_MESSAGE_SIZE) ||
+ (address->address_length >= GNUNET_MAX_MESSAGE_SIZE) ||
+ (namelen >= GNUNET_MAX_MESSAGE_SIZE) )
{
+ /* address too large for us, this should not happen */
GNUNET_break (0);
- return GNUNET_SYSERR;
+ return NULL;
}
- if (NULL != session)
+ if (NOT_FOUND !=
+ find_session_id (sh,
+ session,
+ address))
{
- if (NOT_FOUND != (s = find_session_id (sh, session, &address->peer)))
- {
- /* Already existing, nothing todo */
- return GNUNET_SYSERR;
- }
- s = find_empty_session_slot (sh,
- session,
- &address->peer);
- GNUNET_break (NOT_FOUND != s);
+ /* Already existing, nothing todo, but this should not happen */
+ GNUNET_break (0);
+ return NULL;
}
-
- ev = GNUNET_MQ_msg_extra (m, msize, GNUNET_MESSAGE_TYPE_ATS_ADDRESS_ADD);
- m->ats_count = htonl (ats_count);
- m->peer = address->peer;
- m->address_length = htons (address->address_length);
- m->address_local_info = htonl ((uint32_t) address->local_info);
- m->plugin_name_length = htons (namelen);
- m->session_id = htonl (s);
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Adding address for peer `%s', plugin `%s', session %p id %u\n",
- GNUNET_i2s (&address->peer),
- address->transport_name,
- session,
- s);
- am = (struct GNUNET_ATS_Information *) &m[1];
- memcpy (am,
- ats,
- ats_count * sizeof (struct GNUNET_ATS_Information));
- pm = (char *) &am[ats_count];
- memcpy (pm, address->address, address->address_length);
- if (NULL != address->transport_name)
- memcpy (&pm[address->address_length],
- address->transport_name,
- namelen);
- GNUNET_MQ_send (sh->mq, ev);
- return GNUNET_OK;
+ s = find_empty_session_slot (sh);
+ ar = GNUNET_new (struct GNUNET_ATS_AddressRecord);
+ ar->sh = sh;
+ ar->slot = s;
+ ar->session = session;
+ ar->address = GNUNET_HELLO_address_copy (address);
+ GNUNET_ATS_properties_hton (&ar->properties,
+ prop);
+ sh->session_array[s] = ar;
+ send_add_address_message (sh, ar);
+ return ar;
}
/**
- * We have updated performance statistics for a given address. Note
- * that this function can be called for addresses that are currently
- * in use as well as addresses that are valid but not actively in use.
- * Furthermore, the peer may not even be connected to us right now (in
- * which case the call may be ignored or the information may be stored
- * for later use). Update bandwidth assignments.
+ * An address was used to initiate a session.
*
- * @param sh handle
- * @param address the address
- * @param session session handle, can be NULL
- * @param ats performance data for the address
- * @param ats_count number of performance records in @a ats
- * @return #GNUNET_YES on success, #GNUNET_NO if address or session are unknown,
- * #GNUNET_SYSERR on hard failure
+ * @param ar address record to update information for
+ * @param session session handle
*/
-int
-GNUNET_ATS_address_update (struct GNUNET_ATS_SchedulingHandle *sh,
- const struct GNUNET_HELLO_Address *address,
- struct Session *session,
- const struct GNUNET_ATS_Information *ats,
- uint32_t ats_count)
+void
+GNUNET_ATS_address_add_session (struct GNUNET_ATS_AddressRecord *ar,
+ struct GNUNET_ATS_Session *session)
{
- struct GNUNET_MQ_Envelope *ev;
- struct AddressUpdateMessage *m;
- struct GNUNET_ATS_Information *am;
- char *pm;
- size_t namelen;
- size_t msize;
- uint32_t s = 0;
-
- if (NULL == address)
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- if (NULL == sh)
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
+ GNUNET_break (NULL == ar->session);
+ ar->session = session;
+}
- namelen = (address->transport_name ==
- NULL) ? 0 : strlen (address->transport_name) + 1;
- msize = address->address_length +
- ats_count * sizeof (struct GNUNET_ATS_Information) + namelen;
- if ((msize + sizeof (struct AddressUpdateMessage) >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (address->address_length >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (namelen >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (ats_count >=
- GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_ATS_Information)))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- if (NULL != session)
+/**
+ * A session was destroyed, disassociate it from the
+ * given address record. If this was an incoming
+ * addess, destroy the address as well.
+ *
+ * @param ar address record to update information for
+ * @param session session handle
+ * @return #GNUNET_YES if the @a ar was destroyed because
+ * it was an incoming address,
+ * #GNUNET_NO if the @ar was kept because we can
+ * use it still to establish a new session
+ */
+int
+GNUNET_ATS_address_del_session (struct GNUNET_ATS_AddressRecord *ar,
+ struct GNUNET_ATS_Session *session)
+{
+ GNUNET_assert (session == ar->session);
+ ar->session = NULL;
+ if (GNUNET_HELLO_address_check_option (ar->address,
+ GNUNET_HELLO_ADDRESS_INFO_INBOUND))
{
- s = find_session_id (sh, session, &address->peer);
- if (NOT_FOUND == s)
- return GNUNET_NO;
+ GNUNET_ATS_address_destroy (ar);
+ return GNUNET_YES;
}
-
- ev = GNUNET_MQ_msg_extra (m, msize, GNUNET_MESSAGE_TYPE_ATS_ADDRESS_UPDATE);
- m->ats_count = htonl (ats_count);
- m->peer = address->peer;
- m->address_length = htons (address->address_length);
- m->address_local_info = htonl ((uint32_t) address->local_info);
- m->plugin_name_length = htons (namelen);
- m->session_id = htonl (s);
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Updating address for peer `%s', plugin `%s', session %p id %u\n",
- GNUNET_i2s (&address->peer),
- address->transport_name,
- session,
- s);
-
- am = (struct GNUNET_ATS_Information *) &m[1];
- memcpy (am,
- ats,
- ats_count * sizeof (struct GNUNET_ATS_Information));
- pm = (char *) &am[ats_count];
- memcpy (pm, address->address, address->address_length);
- memcpy (&pm[address->address_length], address->transport_name, namelen);
- GNUNET_MQ_send (sh->mq, ev);
- return GNUNET_YES;
+ return GNUNET_NO;
}
/**
- * An address is now in use or not used any more.
+ * We have updated performance statistics for a given address. Note
+ * that this function can be called for addresses that are currently
+ * in use as well as addresses that are valid but not actively in use.
+ * Furthermore, the peer may not even be connected to us right now (in
+ * which case the call may be ignored or the information may be stored
+ * for later use). Update bandwidth assignments.
*
- * @param sh handle
- * @param address the address
- * @param session session handle, can be NULL
- * @param in_use #GNUNET_YES if this address is now used, #GNUNET_NO
- * if address is not used any more
+ * @param ar address record to update information for
+ * @param prop performance data for the address
*/
void
-GNUNET_ATS_address_in_use (struct GNUNET_ATS_SchedulingHandle *sh,
- const struct GNUNET_HELLO_Address *address,
- struct Session *session,
- int in_use)
+GNUNET_ATS_address_update (struct GNUNET_ATS_AddressRecord *ar,
+ const struct GNUNET_ATS_Properties *prop)
{
+ struct GNUNET_ATS_SchedulingHandle *sh = ar->sh;
struct GNUNET_MQ_Envelope *ev;
- struct AddressUseMessage *m;
- char *pm;
- size_t namelen;
- size_t msize;
- uint32_t s = 0;
-
- namelen =
- (address->transport_name ==
- NULL) ? 0 : strlen (address->transport_name) + 1;
- msize = address->address_length + namelen;
- if ((msize + sizeof (struct AddressUseMessage) >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (address->address_length >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (namelen >= GNUNET_SERVER_MAX_MESSAGE_SIZE))
- {
- GNUNET_break (0);
- return;
- }
-
- if (NULL != session)
- {
- s = find_session_id (sh, session, &address->peer);
- if ((s == NOT_FOUND) && (GNUNET_NO == in_use))
- {
- /* trying to set unknown address to NO */
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Trying to set unknown address to unused for peer `%s', plugin `%s', session %p\n",
- GNUNET_i2s (&address->peer), address->transport_name, session);
- GNUNET_break (0);
- return;
- }
- if ((s == NOT_FOUND) && (GNUNET_YES == in_use))
- {
- /* trying to set new address to YES */
- s = find_empty_session_slot (sh, session, &address->peer);
- GNUNET_assert (NOT_FOUND != s);
- }
- }
-
- ev = GNUNET_MQ_msg_extra (m, msize, GNUNET_MESSAGE_TYPE_ATS_ADDRESS_IN_USE);
- m->peer = address->peer;
- m->in_use = htons (in_use);
- m->address_length = htons (address->address_length);
- m->address_local_info = htonl ((uint32_t) address->local_info);
- m->plugin_name_length = htons (namelen);
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Setting address used to %s for peer `%s', plugin `%s', session %p\n",
- (GNUNET_YES == in_use) ? "YES" : "NO",
- GNUNET_i2s (&address->peer), address->transport_name, session);
+ struct AddressUpdateMessage *m;
- m->session_id = htonl (s);
- pm = (char *) &m[1];
- memcpy (pm, address->address, address->address_length);
- memcpy (&pm[address->address_length], address->transport_name, namelen);
- GNUNET_MQ_send (sh->mq, ev);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Updating address for peer `%s', plugin `%s', session %p slot %u\n",
+ GNUNET_i2s (&ar->address->peer),
+ ar->address->transport_name,
+ ar->session,
+ ar->slot);
+ GNUNET_break (GNUNET_ATS_NET_UNSPECIFIED != prop->scope);
+ GNUNET_ATS_properties_hton (&ar->properties,
+ prop);
+ if (NULL == sh->mq)
+ return; /* disconnected, skip for now */
+ ev = GNUNET_MQ_msg (m, GNUNET_MESSAGE_TYPE_ATS_ADDRESS_UPDATE);
+ m->session_id = htonl (ar->slot);
+ m->peer = ar->address->peer;
+ m->properties = ar->properties;
+ GNUNET_MQ_send (sh->mq,
+ ev);
}
/**
- * An address got destroyed, stop including it as a valid address.
- *
- * If a session is given, only the session will be removed, if no session is
- * given the full address will be deleted.
+ * An address got destroyed, stop using it as a valid address.
*
- * @param sh handle
- * @param address the address
- * @param session session handle that is no longer valid, can be NULL
+ * @param ar address to destroy
*/
void
-GNUNET_ATS_address_destroyed (struct GNUNET_ATS_SchedulingHandle *sh,
- const struct GNUNET_HELLO_Address *address,
- struct Session *session)
+GNUNET_ATS_address_destroy (struct GNUNET_ATS_AddressRecord *ar)
{
+ struct GNUNET_ATS_SchedulingHandle *sh = ar->sh;
struct GNUNET_MQ_Envelope *ev;
struct AddressDestroyedMessage *m;
- char *pm;
- size_t namelen;
- size_t msize;
- uint32_t s;
- if (NULL == address)
- {
- GNUNET_break (0);
- return;
- }
- GNUNET_assert (NULL != address->transport_name);
- namelen = strlen (address->transport_name) + 1;
- GNUNET_assert (namelen > 1);
- msize = address->address_length + namelen;
- if ((msize + sizeof (struct AddressDestroyedMessage) >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (address->address_length >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (namelen >= GNUNET_SERVER_MAX_MESSAGE_SIZE))
- {
- GNUNET_break (0);
- return;
- }
-
- s = find_session_id (sh, session, &address->peer);
- if ((NULL != session) && (NOT_FOUND == s))
- {
- /* trying to delete unknown address */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Trying to delete unknown address for peer `%s', plugin `%s', session %p\n",
- GNUNET_i2s (&address->peer), address->transport_name, session);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Deleting address for peer `%s', plugin `%s', slot %u session %p\n",
+ GNUNET_i2s (&ar->address->peer),
+ ar->address->transport_name,
+ ar->slot,
+ ar->session);
+ GNUNET_break (NULL == ar->session);
+ ar->session = NULL;
+ ar->in_destroy = GNUNET_YES;
+ if (NULL == sh->mq)
return;
- }
-
- ev = GNUNET_MQ_msg_extra (m, msize, GNUNET_MESSAGE_TYPE_ATS_ADDRESS_DESTROYED);
- m->peer = address->peer;
- m->address_length = htons (address->address_length);
- m->address_local_info = htonl ((uint32_t) address->local_info);
- m->plugin_name_length = htons (namelen);
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Deleting address for peer `%s', plugin `%s', session %p\n",
- GNUNET_i2s (&address->peer), address->transport_name, session);
-
- m->session_id = htonl (s);
- pm = (char *) &m[1];
- memcpy (pm, address->address, address->address_length);
- memcpy (&pm[address->address_length], address->transport_name, namelen);
+ ev = GNUNET_MQ_msg (m, GNUNET_MESSAGE_TYPE_ATS_ADDRESS_DESTROYED);
+ m->session_id = htonl (ar->slot);
+ m->peer = ar->address->peer;
GNUNET_MQ_send (sh->mq, ev);
- remove_session (sh, s, &address->peer);
}
+
/* end of ats_api_scheduling.c */
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