X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=src%2Ffs%2Fgnunet-service-fs_cp.h;h=3ca27e814dfae4f8b8164e2c7aa4d486392a4fb4;hb=cfd880578bd21f9adedba557291c903d325e93cd;hp=4ad27afd809567dacb86919cbb75c1574ca78194;hpb=86d7f49fc64f0c766d4bec6b3f34879f108fc8a9;p=oweals%2Fgnunet.git diff --git a/src/fs/gnunet-service-fs_cp.h b/src/fs/gnunet-service-fs_cp.h index 4ad27afd8..3ca27e814 100644 --- a/src/fs/gnunet-service-fs_cp.h +++ b/src/fs/gnunet-service-fs_cp.h @@ -1,6 +1,6 @@ /* This file is part of GNUnet. - (C) 2011 Christian Grothoff (and other contributing authors) + Copyright (C) 2011 Christian Grothoff (and other contributing authors) GNUnet is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published @@ -26,20 +26,43 @@ #ifndef GNUNET_SERVICE_FS_CP_H #define GNUNET_SERVICE_FS_CP_H +#include "fs.h" #include "gnunet-service-fs.h" +/** + * Maximum number of outgoing messages we queue per peer. + * + * Performance measurements for 2 peer setup for 50 MB file + * (using perf_gnunet_service_fs_p2p): + * + * 24: 2-3 MB/s # ~ 24 MB RAM + * 256: 8 MB/s # ~256 MB RAM + * + * Conclusion: 24 should suffice (reasonable + * performance, no excessive memory use). + */ +#define MAX_QUEUE_PER_PEER 24 + +/** + * Length of the P2P success tracker. Note that having a very long + * list can also hurt performance. + */ +#define P2P_SUCCESS_LIST_SIZE 8 + +/** + * Length of the CS-2-P success tracker. Note that + * having a very long list can also hurt performance. + */ +#define CS2P_SUCCESS_LIST_SIZE 8 + + /** * Performance data kept for a peer. */ struct GSF_PeerPerformanceData { - /** - * Transport performance data. - */ - struct GNUNET_TRANSPORT_ATS_Information *atsi; - /** * List of the last clients for which this peer successfully * answered a query. @@ -58,9 +81,16 @@ struct GSF_PeerPerformanceData * getting a reply (only calculated over the requests for * which we actually got a reply). Calculated * as a moving average: new_delay = ((n-1)*last_delay+curr_delay) / n - */ + */ struct GNUNET_TIME_Relative avg_reply_delay; + /** + * If we get content we already have from this peer, for how + * long do we block him? Adjusted based on the fraction of + * redundant data we receive, between 1s and 1h. + */ + struct GNUNET_TIME_Relative migration_delay; + /** * Point in time until which this peer does not want us to migrate content * to it. @@ -89,6 +119,16 @@ struct GSF_PeerPerformanceData */ double avg_priority; + /** + * The peer's identity. + */ + GNUNET_PEER_Id pid; + + /** + * Respect rating for this peer + */ + uint32_t respect; + /** * Number of pending queries (replies are not counted) */ @@ -110,23 +150,25 @@ struct GSF_PeerPerformanceData * @param cp handle to the connected peer record * @param perf peer performance data */ -typedef void (*GSF_ConnectedPeerIterator)(void *cls, - const struct GNUNET_PeerIdentity *peer, - struct GSF_ConnectedPeer *cp, - const struct GSF_PeerPerformanceData *ppd); +typedef void +(*GSF_ConnectedPeerIterator) (void *cls, + const struct GNUNET_PeerIdentity *peer, + struct GSF_ConnectedPeer *cp, + const struct GSF_PeerPerformanceData *ppd); /** * Function called to get a message for transmission. * * @param cls closure - * @param buf_size number of bytes available in buf + * @param buf_size number of bytes available in @a buf * @param buf where to copy the message, NULL on error (peer disconnect) - * @return number of bytes copied to 'buf', can be 0 (without indicating an error) + * @return number of bytes copied to @a buf, can be 0 (without indicating an error) */ -typedef size_t (*GSF_GetMessageCallback)(void *cls, - size_t buf_size, - void *buf); +typedef size_t +(*GSF_GetMessageCallback) (void *cls, + size_t buf_size, + void *buf); /** @@ -134,11 +176,23 @@ typedef size_t (*GSF_GetMessageCallback)(void *cls, * * @param cls closure * @param cp handle to the connected peer record - * @param success GNUNET_YES on success, GNUNET_NO on failure + * @param success #GNUNET_YES on success, #GNUNET_NO on failure + */ +typedef void +(*GSF_PeerReserveCallback) (void *cls, + struct GSF_ConnectedPeer *cp, + int success); + + +/** + * Function called after the creation of a connected peer record is complete. + * + * @param cls closure + * @param cp handle to the newly created connected peer record */ -typedef void (*GSF_PeerReserveCallback)(void *cls, - struct GSF_ConnectedPeer *cp, - int success); +typedef void +(*GSF_ConnectedPeerCreationCallback) (void *cls, + struct GSF_ConnectedPeer *cp); /** @@ -152,12 +206,34 @@ struct GSF_PeerTransmitHandle; * records. * * @param peer identity of peer that connected - * @param atsi performance data for the connection - * @return handle to connected peer entry + * @param creation_cb callback function when the record is created. + * @param creation_cb_cls closure for @creation_cb */ -struct GSF_ConnectedPeer * +void GSF_peer_connect_handler_ (const struct GNUNET_PeerIdentity *peer, - const struct GNUNET_TRANSPORT_ATS_Information *atsi); + GSF_ConnectedPeerCreationCallback creation_cb, + void *creation_cb_cls); + + +/** + * Get a handle for a connected peer. + * + * @param peer peer's identity + * @return NULL if this peer is not currently connected + */ +struct GSF_ConnectedPeer * +GSF_peer_get_ (const struct GNUNET_PeerIdentity *peer); + + +/** + * Update the latency information kept for the given peer. + * + * @param id peer record to update + * @param latency current latency value + */ +void +GSF_update_peer_latency_ (const struct GNUNET_PeerIdentity *id, + struct GNUNET_TIME_Relative latency); /** @@ -165,7 +241,7 @@ GSF_peer_connect_handler_ (const struct GNUNET_PeerIdentity *peer, * If the peer disconnects before the transmission can happen, * the callback is invoked with a 'NULL' buffer. * - * @param peer target peer + * @param cp target peer * @param is_query is this a query (GNUNET_YES) or content (GNUNET_NO) * @param priority how important is this request? * @param timeout when does this request timeout (call gmc with error) @@ -175,13 +251,12 @@ GSF_peer_connect_handler_ (const struct GNUNET_PeerIdentity *peer, * @return handle to cancel request */ struct GSF_PeerTransmitHandle * -GSF_peer_transmit_ (struct GSF_ConnectedPeer *peer, - int is_query, - uint32_t priority, - struct GNUNET_TIME_Relative timeout, - size_t size, - GSF_GetMessageCallback gmc, - void *gmc_cls); +GSF_peer_transmit_ (struct GSF_ConnectedPeer *cp, + int is_query, + uint32_t priority, + struct GNUNET_TIME_Relative timeout, + size_t size, GSF_GetMessageCallback gmc, + void *gmc_cls); /** @@ -199,35 +274,36 @@ GSF_peer_transmit_cancel_ (struct GSF_PeerTransmitHandle *pth); * @param cp responding peer (will be updated) * @param request_time time at which the original query was transmitted * @param request_priority priority of the original request - * @param initiator_client local client on responsible for query (or NULL) - * @param initiator_peer other peer responsible for query (or NULL) */ void GSF_peer_update_performance_ (struct GSF_ConnectedPeer *cp, - struct GNUNET_TIME_Absolute request_time, - uint32_t request_priority, - const struct GSF_LocalClient *initiator_client, - const struct GSF_ConnectedPeer *initiator_peer); + struct GNUNET_TIME_Absolute request_time, + uint32_t request_priority); /** - * Method called whenever a given peer has a status change. + * Report on receiving a reply in response to an initiating client. + * Remember that this peer is good for this client. * - * @param cls closure - * @param peer peer identity this notification is about - * @param bandwidth_in available amount of inbound bandwidth - * @param bandwidth_out available amount of outbound bandwidth - * @param timeout absolute time when this peer will time out - * unless we see some further activity from it - * @param atsi status information + * @param cp responding peer (will be updated) + * @param initiator_client local client on responsible for query */ void -GSF_peer_status_handler_ (void *cls, - const struct GNUNET_PeerIdentity *peer, - struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, - struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out, - struct GNUNET_TIME_Absolute timeout, - const struct GNUNET_TRANSPORT_ATS_Information *atsi); +GSF_peer_update_responder_client_ (struct GSF_ConnectedPeer *cp, + struct GSF_LocalClient *initiator_client); + + +/** + * Report on receiving a reply in response to an initiating peer. + * Remember that this peer is good for this initiating peer. + * + * @param cp responding peer (will be updated) + * @param initiator_peer other peer responsible for query + */ +void +GSF_peer_update_responder_peer_ (struct GSF_ConnectedPeer *cp, + const struct GSF_ConnectedPeer + *initiator_peer); /** @@ -237,15 +313,51 @@ GSF_peer_status_handler_ (void *cls, * @param other the other peer involved (sender or receiver, NULL * for loopback messages where we are both sender and receiver) * @param message the actual message - * @param atsi performance information - * @return GNUNET_OK to keep the connection open, - * GNUNET_SYSERR to close it (signal serious error) + * @return #GNUNET_OK to keep the connection open, + * #GNUNET_SYSERR to close it (signal serious error) */ int GSF_handle_p2p_migration_stop_ (void *cls, - const struct GNUNET_PeerIdentity *other, - const struct GNUNET_MessageHeader *message, - const struct GNUNET_TRANSPORT_ATS_Information *atsi); + const struct GNUNET_PeerIdentity *other, + const struct GNUNET_MessageHeader *message); + + +/** + * Handle P2P "QUERY" message. Only responsible for creating the + * request entry itself and setting up reply callback and cancellation + * on peer disconnect. Does NOT execute the actual request strategy + * (planning) or local database operations. + * + * @param other the other peer involved (sender or receiver, NULL + * for loopback messages where we are both sender and receiver) + * @param message the actual message + * @return pending request handle, NULL on error + */ +struct GSF_PendingRequest * +GSF_handle_p2p_query_ (const struct GNUNET_PeerIdentity *other, + const struct GNUNET_MessageHeader *message); + + +/** + * Return the performance data record for the given peer + * + * @param cp peer to query + * @return performance data record for the peer + */ +struct GSF_PeerPerformanceData * +GSF_get_peer_performance_data_ (struct GSF_ConnectedPeer *cp); + + +/** + * Ask a peer to stop migrating data to us until the given point + * in time. + * + * @param cp peer to ask + * @param block_time until when to block + */ +void +GSF_block_peer_migration_ (struct GSF_ConnectedPeer *cp, + struct GNUNET_TIME_Absolute block_time); /** @@ -257,7 +369,7 @@ GSF_handle_p2p_migration_stop_ (void *cls, */ void GSF_peer_disconnect_handler_ (void *cls, - const struct GNUNET_PeerIdentity *peer); + const struct GNUNET_PeerIdentity *peer); /** @@ -281,18 +393,29 @@ GSF_handle_local_client_disconnect_ (const struct GSF_LocalClient *lc); */ void GSF_connected_peer_change_preference_ (struct GSF_ConnectedPeer *cp, - uint64_t pref); + uint64_t pref); /** * Obtain the identity of a connected peer. * - * @param cp peer to reserve bandwidth from + * @param cp peer to get identity of * @param id identity to set (written to) */ void GSF_connected_peer_get_identity_ (const struct GSF_ConnectedPeer *cp, - struct GNUNET_PeerIdentity *id); + struct GNUNET_PeerIdentity *id); + + +/** + * Obtain the identity of a connected peer. + * + * @param cp peer to get identity of + * @return reference to peer identity, valid until peer disconnects (!) + */ +const struct GNUNET_PeerIdentity * +GSF_connected_peer_get_identity2_ (const struct GSF_ConnectedPeer *cp); + /** @@ -302,17 +425,14 @@ GSF_connected_peer_get_identity_ (const struct GSF_ConnectedPeer *cp, * @param it_cls closure for it */ void -GSF_iterate_connected_peers_ (GSF_ConnectedPeerIterator it, - void *it_cls); +GSF_iterate_connected_peers_ (GSF_ConnectedPeerIterator it, void *it_cls); /** * Initialize peer management subsystem. - * - * @param cfg configuration to use */ void -GSF_connected_peer_init_ (struct GNUNET_CONFIGURATION_Handle *cfg); +GSF_connected_peer_init_ (void); /**