GNUnet  0.10.x
gnunet-service-fs_cp.c
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1 /*
2  This file is part of GNUnet.
3  Copyright (C) 2011, 2016 GNUnet e.V.
4 
5  GNUnet is free software: you can redistribute it and/or modify it
6  under the terms of the GNU Affero General Public License as published
7  by the Free Software Foundation, either version 3 of the License,
8  or (at your option) any later version.
9 
10  GNUnet is distributed in the hope that it will be useful, but
11  WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  Affero General Public License for more details.
14 
15  You should have received a copy of the GNU Affero General Public License
16  along with this program. If not, see <http://www.gnu.org/licenses/>.
17 
18  SPDX-License-Identifier: AGPL3.0-or-later
19 */
25 #include "platform.h"
26 #include "gnunet_util_lib.h"
27 #include "gnunet_load_lib.h"
28 #include "gnunet-service-fs.h"
29 #include "gnunet-service-fs_cp.h"
30 #include "gnunet-service-fs_pe.h"
31 #include "gnunet-service-fs_pr.h"
32 #include "gnunet-service-fs_push.h"
34 
35 
41 #define RUNAVG_DELAY_N 16
42 
46 #define RESPECT_FLUSH_FREQ GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5)
47 
51 #define REPLY_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 2)
52 
56 #define INSANE_STATISTICS GNUNET_NO
57 
58 
63 {
64 
69 
74 
79 
84 
89 
93  int is_query;
94 
99 
103  uint32_t priority;
104 
105 };
106 
107 
112 {
113 
118 
123 
128 
133 
138 
142  size_t msize;
143 
144 };
145 
146 
151 {
152 
157 
162 
167 
168 };
169 
170 
175 {
176 
181 
186  struct GNUNET_TIME_Absolute last_migration_block;
187 
192 
198 
204 
210 
216 
221 
226 
231 
237 
242  uint64_t inc_preference;
243 
247  unsigned int delay_queue_size;
248 
252  uint32_t disk_respect;
253 
258  unsigned int last_p2p_replies_woff;
259 
265 
270 
276 
281 
282 };
283 
284 
289 
294 
299 
300 
307 void
309  struct GNUNET_TIME_Relative latency)
310 {
311  struct GSF_ConnectedPeer *cp;
312 
313  cp = GSF_peer_get_ (id);
314  if (NULL == cp)
315  return; /* we're not yet connected at the core level, ignore */
317  latency);
318 }
319 
320 
329 {
330  return &cp->ppd;
331 }
332 
333 
339 static void
341 
342 
353 static void
354 ats_reserve_callback (void *cls,
355  const struct GNUNET_PeerIdentity *peer,
356  int32_t amount,
357  struct GNUNET_TIME_Relative res_delay);
358 
359 
366 static void
368 {
369  struct GSF_ConnectedPeer *cp;
370  struct GNUNET_PeerIdentity target;
371 
372  cp = pth->cp;
373  GNUNET_assert (0 != cp->ppd.pid);
374  GNUNET_PEER_resolve (cp->ppd.pid, &target);
375 
376  if (0 != cp->inc_preference)
377  {
379  &target,
381  (double) cp->inc_preference,
383  cp->inc_preference = 0;
384  }
385 
386  if ( (GNUNET_YES == pth->is_query) &&
387  (GNUNET_YES != pth->was_reserved) )
388  {
389  /* query, need reservation */
390  if (GNUNET_YES != cp->did_reserve)
391  return; /* not ready */
392  cp->did_reserve = GNUNET_NO;
393  /* reservation already done! */
394  pth->was_reserved = GNUNET_YES;
396  &target,
397  DBLOCK_SIZE,
399  cp);
400  return;
401  }
402  peer_transmit (cp);
403 }
404 
405 
411 static void
413 {
414  struct GSF_PeerTransmitHandle *pth = cp->pth_head;
415  struct GSF_PeerTransmitHandle *pos;
416 
417  if (NULL == pth)
418  return;
420  cp->pth_tail,
421  pth);
422  if (GNUNET_YES == pth->is_query)
423  {
427  GNUNET_assert (0 < cp->ppd.pending_queries--);
428  }
429  else if (GNUNET_NO == pth->is_query)
430  {
431  GNUNET_assert (0 < cp->ppd.pending_replies--);
432  }
436  GNUNET_MQ_send (cp->mq,
437  pth->env);
438  GNUNET_free (pth);
439  if (NULL != (pos = cp->pth_head))
440  {
441  GNUNET_assert (pos != pth);
442  schedule_transmission (pos);
443  }
444 }
445 
446 
452 static void
453 retry_reservation (void *cls)
454 {
455  struct GSF_ConnectedPeer *cp = cls;
456  struct GNUNET_PeerIdentity target;
457 
458  GNUNET_PEER_resolve (cp->ppd.pid, &target);
459  cp->rc_delay_task = NULL;
460  cp->rc =
462  &target,
463  DBLOCK_SIZE,
464  &ats_reserve_callback, cp);
465 }
466 
467 
478 static void
480  const struct GNUNET_PeerIdentity *peer,
481  int32_t amount,
482  struct GNUNET_TIME_Relative res_delay)
483 {
484  struct GSF_ConnectedPeer *cp = cls;
485  struct GSF_PeerTransmitHandle *pth;
486 
488  "Reserved %d bytes / need to wait %s for reservation\n",
489  (int) amount,
491  cp->rc = NULL;
492  if (0 == amount)
493  {
494  cp->rc_delay_task =
495  GNUNET_SCHEDULER_add_delayed (res_delay,
497  cp);
498  return;
499  }
500  cp->did_reserve = GNUNET_YES;
501  pth = cp->pth_head;
502  if (NULL != pth)
503  {
504  /* reservation success, try transmission now! */
505  peer_transmit (cp);
506  }
507 }
508 
509 
517 static void
518 peer_respect_cb (void *cls,
519  const struct GNUNET_PEERSTORE_Record *record,
520  const char *emsg)
521 {
522  struct GSF_ConnectedPeer *cp = cls;
523 
524  GNUNET_assert (NULL != cp->respect_iterate_req);
525  if ( (NULL != record) &&
526  (sizeof (cp->disk_respect) == record->value_size))
527  {
528  cp->disk_respect = *((uint32_t *)record->value);
529  cp->ppd.respect += *((uint32_t *)record->value);
530  }
531  GSF_push_start_ (cp);
532  if (NULL != record)
534  cp->respect_iterate_req = NULL;
535 }
536 
537 
548 static int
550  const struct GNUNET_HashCode *key,
551  struct GSF_PendingRequest *pr)
552 {
553  struct GSF_ConnectedPeer *cp = cls;
554  struct GNUNET_PeerIdentity pid;
555 
556  if (GNUNET_YES !=
558  return GNUNET_YES; /* request is not actually active, skip! */
560  if (GNUNET_YES !=
562  {
564  gettext_noop ("# Loopback routes suppressed"),
565  1,
566  GNUNET_NO);
567  return GNUNET_YES;
568  }
569  GSF_plan_add_ (cp, pr);
570  return GNUNET_YES;
571 }
572 
573 
583 void *
585  const struct GNUNET_PeerIdentity *peer,
586  struct GNUNET_MQ_Handle *mq)
587 {
588  struct GSF_ConnectedPeer *cp;
589 
590  if (0 ==
592  peer))
593  return NULL;
595  "Connected to peer %s\n",
596  GNUNET_i2s (peer));
597  cp = GNUNET_new (struct GSF_ConnectedPeer);
598  cp->ppd.pid = GNUNET_PEER_intern (peer);
599  cp->ppd.peer = peer;
600  cp->mq = mq;
602  cp->rc =
604  peer,
605  DBLOCK_SIZE,
606  &ats_reserve_callback, cp);
608  GNUNET_YES);
612  cp,
615  gettext_noop ("# peers connected"),
617  GNUNET_NO);
619  = GNUNET_PEERSTORE_iterate (peerstore,
620  "fs",
621  peer,
622  "respect",
624  cp);
626  cp);
627  return cp;
628 }
629 
630 
637 static void
638 revive_migration (void *cls)
639 {
640  struct GSF_ConnectedPeer *cp = cls;
641  struct GNUNET_TIME_Relative bt;
642 
643  cp->mig_revive_task = NULL;
645  if (0 != bt.rel_value_us)
646  {
647  /* still time left... */
648  cp->mig_revive_task =
650  return;
651  }
652  GSF_push_start_ (cp);
653 }
654 
655 
662 struct GSF_ConnectedPeer *
663 GSF_peer_get_ (const struct GNUNET_PeerIdentity *peer)
664 {
665  if (NULL == cp_map)
666  return NULL;
667  return GNUNET_CONTAINER_multipeermap_get (cp_map, peer);
668 }
669 
670 
677 void
679  const struct MigrationStopMessage *msm)
680 {
681  struct GSF_ConnectedPeer *cp = cls;
682  struct GNUNET_TIME_Relative bt;
683 
685  gettext_noop ("# migration stop messages received"),
686  1, GNUNET_NO);
689  _("Migration of content to peer `%s' blocked for %s\n"),
690  GNUNET_i2s (cp->ppd.peer),
693  if ( (NULL == cp->mig_revive_task) &&
694  (NULL == cp->respect_iterate_req) )
695  {
696  GSF_push_stop_ (cp);
697  cp->mig_revive_task =
699  &revive_migration, cp);
700  }
701 }
702 
703 
709 static void
711 {
712  struct GSF_ConnectedPeer *cp = peerreq->cp;
713  struct GSF_PendingRequestData *prd;
714 
715  prd = GSF_pending_request_get_data_ (peerreq->pr);
716  if (NULL != peerreq->kill_task)
717  {
719  peerreq->kill_task = NULL;
720  }
722  gettext_noop ("# P2P searches active"),
723  -1,
724  GNUNET_NO);
727  &prd->query,
728  peerreq));
729  GNUNET_free (peerreq);
730 }
731 
732 
741 static int
743  const struct GNUNET_HashCode *query,
744  void *value)
745 {
746  struct PeerRequest *peerreq = value;
747  struct GSF_PendingRequest *pr = peerreq->pr;
748 
749  free_pending_request (peerreq);
751  GNUNET_NO);
752  return GNUNET_OK;
753 }
754 
755 
761 static void
763 {
764  struct PeerRequest *peerreq = cls;
765  struct GSF_PendingRequest *pr = peerreq->pr;
766  struct GSF_PendingRequestData *prd;
767 
768  peerreq->kill_task = NULL;
771  &prd->query,
772  peerreq);
773 }
774 
775 
781 static void
783 {
784  struct GSF_DelayedHandle *dh = cls;
785  struct GSF_ConnectedPeer *cp = dh->cp;
786 
788  cp->delayed_tail,
789  dh);
790  cp->delay_queue_size--;
791  GSF_peer_transmit_ (cp,
792  GNUNET_NO,
793  UINT32_MAX,
794  dh->env);
795  GNUNET_free (dh);
796 }
797 
798 
804 static struct GNUNET_TIME_Relative
806 {
807  struct GNUNET_TIME_Relative ret;
808 
809  ret =
813  2 * GSF_avg_latency.rel_value_us + 1));
814 #if INSANE_STATISTICS
817  ("# artificial delays introduced (ms)"),
818  ret.rel_value_us / 1000LL, GNUNET_NO);
819 #endif
820  return ret;
821 }
822 
823 
842 static void
843 handle_p2p_reply (void *cls,
845  struct GSF_PendingRequest *pr,
846  uint32_t reply_anonymity_level,
849  enum GNUNET_BLOCK_Type type,
850  const void *data,
851  size_t data_len)
852 {
853  struct PeerRequest *peerreq = cls;
854  struct GSF_ConnectedPeer *cp = peerreq->cp;
855  struct GSF_PendingRequestData *prd;
856  struct GNUNET_MQ_Envelope *env;
857  struct PutMessage *pm;
858  size_t msize;
859 
860  GNUNET_assert (data_len + sizeof (struct PutMessage) <
862  GNUNET_assert (peerreq->pr == pr);
864  if (NULL == data)
865  {
866  free_pending_request (peerreq);
867  return;
868  }
870  if ((prd->type != type) && (GNUNET_BLOCK_TYPE_ANY != prd->type))
871  {
874  ("# replies dropped due to type mismatch"),
875  1, GNUNET_NO);
876  return;
877  }
879  "Transmitting result for query `%s' to peer\n",
880  GNUNET_h2s (&prd->query));
882  gettext_noop ("# replies received for other peers"),
883  1, GNUNET_NO);
884  msize = sizeof (struct PutMessage) + data_len;
885  if (msize >= GNUNET_MAX_MESSAGE_SIZE)
886  {
887  GNUNET_break (0);
888  return;
889  }
890  if ((UINT32_MAX != reply_anonymity_level) && (reply_anonymity_level > 1))
891  {
892  if (reply_anonymity_level - 1 > GSF_cover_content_count)
893  {
896  ("# replies dropped due to insufficient cover traffic"),
897  1, GNUNET_NO);
898  return;
899  }
900  GSF_cover_content_count -= (reply_anonymity_level - 1);
901  }
902 
903  env = GNUNET_MQ_msg_extra (pm,
904  data_len,
906  pm->type = htonl (type);
907  pm->expiration = GNUNET_TIME_absolute_hton (expiration);
908  GNUNET_memcpy (&pm[1],
909  data,
910  data_len);
911  if ( (UINT32_MAX != reply_anonymity_level) &&
912  (0 != reply_anonymity_level) &&
914  {
915  struct GSF_DelayedHandle *dh;
916 
917  dh = GNUNET_new (struct GSF_DelayedHandle);
918  dh->cp = cp;
919  dh->env = env;
920  dh->msize = msize;
922  cp->delayed_tail,
923  dh);
924  cp->delay_queue_size++;
925  dh->delay_task =
928  dh);
929  }
930  else
931  {
932  GSF_peer_transmit_ (cp,
933  GNUNET_NO,
934  UINT32_MAX,
935  env);
936  }
938  return;
939  if (NULL == peerreq->kill_task)
940  {
943  ("# P2P searches destroyed due to ultimate reply"),
944  1,
945  GNUNET_NO);
946  peerreq->kill_task =
948  peerreq);
949  }
950 }
951 
952 
961 static int
963 {
964  if (0 == value)
965  return 0;
966  GNUNET_assert (NULL != cp);
967  if (value > 0)
968  {
969  if (cp->ppd.respect + value < cp->ppd.respect)
970  {
971  value = UINT32_MAX - cp->ppd.respect;
972  cp->ppd.respect = UINT32_MAX;
973  }
974  else
975  cp->ppd.respect += value;
976  }
977  else
978  {
979  if (cp->ppd.respect < -value)
980  {
981  value = -cp->ppd.respect;
982  cp->ppd.respect = 0;
983  }
984  else
985  cp->ppd.respect += value;
986  }
987  return value;
988 }
989 
990 
999 static int32_t
1000 bound_priority (uint32_t prio_in,
1001  struct GSF_ConnectedPeer *cp)
1002 {
1003 #define N ((double)128.0)
1004  uint32_t ret;
1005  double rret;
1006  int ld;
1007 
1008  ld = GSF_test_get_load_too_high_ (0);
1009  if (GNUNET_SYSERR == ld)
1010  {
1011 #if INSANE_STATISTICS
1013  gettext_noop
1014  ("# requests done for free (low load)"), 1,
1015  GNUNET_NO);
1016 #endif
1017  return 0; /* excess resources */
1018  }
1019  if (prio_in > INT32_MAX)
1020  prio_in = INT32_MAX;
1021  ret = -change_peer_respect (cp, -(int) prio_in);
1022  if (ret > 0)
1023  {
1024  if (ret > GSF_current_priorities + N)
1025  rret = GSF_current_priorities + N;
1026  else
1027  rret = ret;
1028  GSF_current_priorities = (GSF_current_priorities * (N - 1) + rret) / N;
1029  }
1030  if ((GNUNET_YES == ld) && (ret > 0))
1031  {
1032  /* try with charging */
1033  ld = GSF_test_get_load_too_high_ (ret);
1034  }
1035  if (GNUNET_YES == ld)
1036  {
1038  gettext_noop
1039  ("# request dropped, priority insufficient"), 1,
1040  GNUNET_NO);
1041  /* undo charge */
1042  change_peer_respect (cp, (int) ret);
1043  return -1; /* not enough resources */
1044  }
1045  else
1046  {
1048  gettext_noop
1049  ("# requests done for a price (normal load)"), 1,
1050  GNUNET_NO);
1051  }
1052 #undef N
1053  return ret;
1054 }
1055 
1056 
1066 static int32_t
1067 bound_ttl (int32_t ttl_in,
1068  uint32_t prio)
1069 {
1070  unsigned long long allowed;
1071 
1072  if (ttl_in <= 0)
1073  return ttl_in;
1074  allowed = ((unsigned long long) prio) * TTL_DECREMENT / 1000;
1075  if (ttl_in > allowed)
1076  {
1077  if (allowed >= (1 << 30))
1078  return 1 << 30;
1079  return allowed;
1080  }
1081  return ttl_in;
1082 }
1083 
1084 
1089 {
1090 
1094  int32_t priority;
1095 
1099  int32_t ttl;
1100 
1105 
1110 
1111 };
1112 
1113 
1124 static int
1125 test_exist_cb (void *cls,
1126  const struct GNUNET_HashCode *hc,
1127  void *value)
1128 {
1129  struct TestExistClosure *tec = cls;
1130  struct PeerRequest *peerreq = value;
1131  struct GSF_PendingRequest *pr;
1132  struct GSF_PendingRequestData *prd;
1133 
1134  pr = peerreq->pr;
1135  prd = GSF_pending_request_get_data_ (pr);
1136  if (prd->type != tec->type)
1137  return GNUNET_YES;
1138  if (prd->ttl.abs_value_us >=
1139  GNUNET_TIME_absolute_get ().abs_value_us + tec->ttl * 1000LL)
1140  {
1141  /* existing request has higher TTL, drop new one! */
1142  prd->priority += tec->priority;
1144  "Have existing request with higher TTL, dropping new request.\n");
1146  gettext_noop
1147  ("# requests dropped due to higher-TTL request"),
1148  1, GNUNET_NO);
1149  tec->finished = GNUNET_YES;
1150  return GNUNET_NO;
1151  }
1152  /* existing request has lower TTL, drop old one! */
1153  tec->priority += prd->priority;
1154  free_pending_request (peerreq);
1156  GNUNET_YES);
1157  return GNUNET_NO;
1158 }
1159 
1160 
1170 void
1171 handle_p2p_get (void *cls,
1172  const struct GetMessage *gm)
1173 {
1174  struct GSF_ConnectedPeer *cps = cls;
1175  struct PeerRequest *peerreq;
1176  struct GSF_PendingRequest *pr;
1177  struct GSF_ConnectedPeer *cp;
1178  const struct GNUNET_PeerIdentity *target;
1180  uint16_t msize;
1181  unsigned int bits;
1182  const struct GNUNET_PeerIdentity *opt;
1183  uint32_t bm;
1184  size_t bfsize;
1185  uint32_t ttl_decrement;
1186  struct TestExistClosure tec;
1187  GNUNET_PEER_Id spid;
1188  const struct GSF_PendingRequestData *prd;
1189 
1190  msize = ntohs (gm->header.size);
1191  tec.type = ntohl (gm->type);
1192  bm = ntohl (gm->hash_bitmap);
1193  bits = 0;
1194  while (bm > 0)
1195  {
1196  if (1 == (bm & 1))
1197  bits++;
1198  bm >>= 1;
1199  }
1200  opt = (const struct GNUNET_PeerIdentity *) &gm[1];
1201  bfsize = msize - sizeof (struct GetMessage) - bits * sizeof (struct GNUNET_PeerIdentity);
1203  gettext_noop
1204  ("# GET requests received (from other peers)"),
1205  1,
1206  GNUNET_NO);
1208  bm = ntohl (gm->hash_bitmap);
1209  bits = 0;
1210  if (0 != (bm & GET_MESSAGE_BIT_RETURN_TO))
1211  cp = GSF_peer_get_ (&opt[bits++]);
1212  else
1213  cp = cps;
1214  if (NULL == cp)
1215  {
1216  if (0 != (bm & GET_MESSAGE_BIT_RETURN_TO))
1218  "Failed to find RETURN-TO peer `%s' in connection set. Dropping query.\n",
1219  GNUNET_i2s (&opt[bits - 1]));
1220 
1221  else
1223  "Failed to find peer `%s' in connection set. Dropping query.\n",
1224  GNUNET_i2s (cps->ppd.peer));
1226  gettext_noop
1227  ("# requests dropped due to missing reverse route"),
1228  1,
1229  GNUNET_NO);
1230  return;
1231  }
1232  unsigned int queue_size = GNUNET_MQ_get_length (cp->mq);
1233  queue_size += cp->ppd.pending_replies + cp->delay_queue_size;
1234  if (queue_size > MAX_QUEUE_PER_PEER)
1235  {
1237  "Peer `%s' has too many replies queued already. Dropping query.\n",
1238  GNUNET_i2s (cps->ppd.peer));
1240  gettext_noop ("# requests dropped due to full reply queue"),
1241  1,
1242  GNUNET_NO);
1243  return;
1244  }
1245  /* note that we can really only check load here since otherwise
1246  * peers could find out that we are overloaded by not being
1247  * disconnected after sending us a malformed query... */
1248  tec.priority = bound_priority (ntohl (gm->priority),
1249  cps);
1250  if (tec.priority < 0)
1251  {
1253  "Dropping query from `%s', this peer is too busy.\n",
1254  GNUNET_i2s (cps->ppd.peer));
1255  return;
1256  }
1258  "Received request for `%s' of type %u from peer `%s' with flags %u\n",
1259  GNUNET_h2s (&gm->query),
1260  (unsigned int) tec.type,
1261  GNUNET_i2s (cps->ppd.peer),
1262  (unsigned int) bm);
1263  target =
1264  (0 !=
1265  (bm & GET_MESSAGE_BIT_TRANSMIT_TO)) ? (&opt[bits++]) : NULL;
1266  options = GSF_PRO_DEFAULTS;
1267  spid = 0;
1268  if ((GNUNET_LOAD_get_load (cp->ppd.transmission_delay) > 3 * (1 + tec.priority))
1270  GNUNET_CONSTANTS_MAX_CORK_DELAY.rel_value_us * 2 +
1272  {
1273  /* don't have BW to send to peer, or would likely take longer than we have for it,
1274  * so at best indirect the query */
1275  tec.priority = 0;
1276  options |= GSF_PRO_FORWARD_ONLY;
1277  spid = GNUNET_PEER_intern (cps->ppd.peer);
1278  GNUNET_assert (0 != spid);
1279  }
1280  tec.ttl = bound_ttl (ntohl (gm->ttl),
1281  tec.priority);
1282  /* decrement ttl (always) */
1283  ttl_decrement =
1285  TTL_DECREMENT);
1286  if ( (tec.ttl < 0) &&
1287  (((int32_t) (tec.ttl - ttl_decrement)) > 0) )
1288  {
1290  "Dropping query from `%s' due to TTL underflow (%d - %u).\n",
1291  GNUNET_i2s (cps->ppd.peer),
1292  tec.ttl,
1293  ttl_decrement);
1295  gettext_noop
1296  ("# requests dropped due TTL underflow"), 1,
1297  GNUNET_NO);
1298  /* integer underflow => drop (should be very rare)! */
1299  return;
1300  }
1301  tec.ttl -= ttl_decrement;
1302 
1303  /* test if the request already exists */
1304  tec.finished = GNUNET_NO;
1306  &gm->query,
1307  &test_exist_cb,
1308  &tec);
1309  if (GNUNET_YES == tec.finished)
1310  return; /* merged into existing request, we're done */
1311 
1312  peerreq = GNUNET_new (struct PeerRequest);
1313  peerreq->cp = cp;
1314  pr = GSF_pending_request_create_ (options,
1315  tec.type,
1316  &gm->query,
1317  target,
1318  (bfsize > 0)
1319  ? (const char *) &opt[bits]
1320  : NULL,
1321  bfsize,
1322  ntohl (gm->filter_mutator),
1323  1 /* anonymity */,
1324  (uint32_t) tec.priority,
1325  tec.ttl,
1326  spid,
1327  GNUNET_PEER_intern (cps->ppd.peer),
1328  NULL, 0, /* replies_seen */
1330  peerreq);
1331  GNUNET_assert (NULL != pr);
1332  prd = GSF_pending_request_get_data_ (pr);
1333  peerreq->pr = pr;
1336  &prd->query,
1337  peerreq,
1340  gettext_noop ("# P2P query messages received and processed"),
1341  1,
1342  GNUNET_NO);
1344  gettext_noop ("# P2P searches active"),
1345  1,
1346  GNUNET_NO);
1348  GSF_local_lookup_ (pr,
1350  NULL);
1351 }
1352 
1353 
1366 void
1368  int is_query,
1369  uint32_t priority,
1370  struct GNUNET_MQ_Envelope *env)
1371 {
1372  struct GSF_PeerTransmitHandle *pth;
1373  struct GSF_PeerTransmitHandle *pos;
1374  struct GSF_PeerTransmitHandle *prev;
1375 
1376  pth = GNUNET_new (struct GSF_PeerTransmitHandle);
1378  pth->env = env;
1379  pth->is_query = is_query;
1380  pth->priority = priority;
1381  pth->cp = cp;
1382  /* insertion sort (by priority, descending) */
1383  prev = NULL;
1384  pos = cp->pth_head;
1385  while ((NULL != pos) && (pos->priority > priority))
1386  {
1387  prev = pos;
1388  pos = pos->next;
1389  }
1391  cp->pth_tail,
1392  prev,
1393  pth);
1394  if (GNUNET_YES == is_query)
1395  cp->ppd.pending_queries++;
1396  else if (GNUNET_NO == is_query)
1397  cp->ppd.pending_replies++;
1398  schedule_transmission (pth);
1399 }
1400 
1401 
1409 void
1411  struct GNUNET_TIME_Absolute request_time,
1412  uint32_t request_priority)
1413 {
1414  struct GNUNET_TIME_Relative delay;
1415 
1416  delay = GNUNET_TIME_absolute_get_duration (request_time);
1419  delay.rel_value_us) / RUNAVG_DELAY_N;
1420  cp->ppd.avg_priority =
1421  (cp->ppd.avg_priority * (RUNAVG_DELAY_N - 1) +
1422  request_priority) / RUNAVG_DELAY_N;
1423 }
1424 
1425 
1433 void
1435  struct GSF_LocalClient *initiator_client)
1436 {
1438  CS2P_SUCCESS_LIST_SIZE] = initiator_client;
1439 }
1440 
1441 
1449 void
1451  const struct GSF_ConnectedPeer *initiator_peer)
1452 {
1453  unsigned int woff;
1454 
1456  GNUNET_PEER_change_rc (cp->ppd.last_p2p_replies[woff], -1);
1457  cp->ppd.last_p2p_replies[woff] = initiator_peer->ppd.pid;
1458  GNUNET_PEER_change_rc (initiator_peer->ppd.pid, 1);
1459  cp->last_p2p_replies_woff = (woff + 1) % P2P_SUCCESS_LIST_SIZE;
1460 }
1461 
1462 
1471 static int
1472 flush_respect (void *cls,
1473  const struct GNUNET_PeerIdentity *key,
1474  void *value)
1475 {
1476  struct GSF_ConnectedPeer *cp = value;
1477  struct GNUNET_PeerIdentity pid;
1478 
1479  if (cp->ppd.respect == cp->disk_respect)
1480  return GNUNET_OK; /* unchanged */
1481  GNUNET_assert (0 != cp->ppd.pid);
1482  GNUNET_PEER_resolve (cp->ppd.pid, &pid);
1483  GNUNET_PEERSTORE_store (peerstore, "fs", &pid, "respect", &cp->ppd.respect,
1484  sizeof (cp->ppd.respect),
1487  NULL,
1488  NULL);
1489  return GNUNET_OK;
1490 }
1491 
1492 
1501 void
1503  const struct GNUNET_PeerIdentity *peer,
1504  void *internal_cls)
1505 {
1506  struct GSF_ConnectedPeer *cp = internal_cls;
1507  struct GSF_PeerTransmitHandle *pth;
1508  struct GSF_DelayedHandle *dh;
1509 
1510  if (NULL == cp)
1511  return; /* must have been disconnect from core with
1512  * 'peer' == my_id, ignore */
1513  flush_respect (NULL,
1514  peer,
1515  cp);
1518  peer,
1519  cp));
1521  gettext_noop ("# peers connected"),
1523  GNUNET_NO);
1524  if (NULL != cp->respect_iterate_req)
1525  {
1527  cp->respect_iterate_req = NULL;
1528  }
1529  if (NULL != cp->rc)
1530  {
1532  cp->rc = NULL;
1533  }
1534  if (NULL != cp->rc_delay_task)
1535  {
1537  cp->rc_delay_task = NULL;
1538  }
1541  cp);
1543  cp->request_map = NULL;
1548  memset (cp->ppd.last_p2p_replies,
1549  0,
1550  sizeof (cp->ppd.last_p2p_replies));
1551  GSF_push_stop_ (cp);
1552  while (NULL != (pth = cp->pth_head))
1553  {
1555  cp->pth_tail,
1556  pth);
1557  if (GNUNET_YES == pth->is_query)
1558  GNUNET_assert (0 < cp->ppd.pending_queries--);
1559  else if (GNUNET_NO == pth->is_query)
1560  GNUNET_assert (0 < cp->ppd.pending_replies--);
1561  GNUNET_free (pth);
1562  }
1563  while (NULL != (dh = cp->delayed_head))
1564  {
1566  cp->delayed_tail,
1567  dh);
1568  GNUNET_MQ_discard (dh->env);
1569  cp->delay_queue_size--;
1571  GNUNET_free (dh);
1572  }
1573  GNUNET_PEER_change_rc (cp->ppd.pid, -1);
1574  if (NULL != cp->mig_revive_task)
1575  {
1577  cp->mig_revive_task = NULL;
1578  }
1579  GNUNET_break (0 == cp->ppd.pending_queries);
1580  GNUNET_break (0 == cp->ppd.pending_replies);
1581  GNUNET_free (cp);
1582 }
1583 
1584 
1589 {
1594 
1598  void *it_cls;
1599 };
1600 
1601 
1610 static int
1611 call_iterator (void *cls,
1612  const struct GNUNET_PeerIdentity *key,
1613  void *value)
1614 {
1615  struct IterationContext *ic = cls;
1616  struct GSF_ConnectedPeer *cp = value;
1617 
1618  ic->it (ic->it_cls,
1619  key, cp,
1620  &cp->ppd);
1621  return GNUNET_YES;
1622 }
1623 
1624 
1631 void
1633  void *it_cls)
1634 {
1635  struct IterationContext ic;
1636 
1637  ic.it = it;
1638  ic.it_cls = it_cls;
1640  &call_iterator,
1641  &ic);
1642 }
1643 
1644 
1651 void
1653  struct GNUNET_PeerIdentity *id)
1654 {
1655  GNUNET_assert (0 != cp->ppd.pid);
1656  GNUNET_PEER_resolve (cp->ppd.pid, id);
1657 }
1658 
1659 
1666 const struct GNUNET_PeerIdentity *
1668 {
1669  GNUNET_assert (0 != cp->ppd.pid);
1670  return GNUNET_PEER_resolve2 (cp->ppd.pid);
1671 }
1672 
1673 
1681 void
1683  struct GNUNET_TIME_Absolute block_time)
1684 {
1685  struct GNUNET_MQ_Envelope *env;
1686  struct MigrationStopMessage *msm;
1687 
1688  if (cp->last_migration_block.abs_value_us > block_time.abs_value_us)
1689  {
1691  "Migration already blocked for another %s\n",
1694  return; /* already blocked */
1695  }
1696  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Asking to stop migration for %s\n",
1698  GNUNET_YES));
1699  cp->last_migration_block = block_time;
1700  env = GNUNET_MQ_msg (msm,
1702  msm->reserved = htonl (0);
1703  msm->duration
1705  (cp->last_migration_block));
1707  gettext_noop ("# migration stop messages sent"),
1708  1,
1709  GNUNET_NO);
1710  GSF_peer_transmit_ (cp,
1711  GNUNET_SYSERR,
1712  UINT32_MAX,
1713  env);
1714 }
1715 
1716 
1726 void
1728  uint64_t pref)
1729 {
1730  cp->inc_preference += pref;
1731 }
1732 
1733 
1739 static void
1741 {
1742  fr_task = NULL;
1744  &flush_respect,
1745  NULL);
1748  &cron_flush_respect, NULL);
1749 }
1750 
1751 
1755 void
1757 {
1759  peerstore = GNUNET_PEERSTORE_connect (GSF_cfg);
1761  &cron_flush_respect, NULL);
1762 }
1763 
1764 
1768 void
1770 {
1772  &flush_respect,
1773  NULL);
1774  GNUNET_SCHEDULER_cancel (fr_task);
1775  fr_task = NULL;
1777  cp_map = NULL;
1778  GNUNET_PEERSTORE_disconnect (peerstore,
1779  GNUNET_YES);
1780 
1781 }
1782 
1783 
1792 static int
1794  const struct GNUNET_PeerIdentity *key,
1795  void *value)
1796 {
1797  const struct GSF_LocalClient *lc = cls;
1798  struct GSF_ConnectedPeer *cp = value;
1799  unsigned int i;
1800 
1801  for (i = 0; i < CS2P_SUCCESS_LIST_SIZE; i++)
1802  if (cp->ppd.last_client_replies[i] == lc)
1803  cp->ppd.last_client_replies[i] = NULL;
1804  return GNUNET_YES;
1805 }
1806 
1807 
1814 void
1816 {
1817  if (NULL == cp_map)
1818  return; /* already cleaned up */
1821  (void *) lc);
1822 }
1823 
1824 
1825 /* end of gnunet-service-fs_cp.c */
void GSF_connected_peer_change_preference_(struct GSF_ConnectedPeer *cp, uint64_t pref)
Notify core about a preference we have for the given peer (to allocate more resources towards it)...
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
const struct GNUNET_PeerIdentity * GNUNET_PEER_resolve2(GNUNET_PEER_Id id)
Convert an interned PID to a normal peer identity.
Definition: peer.c:246
API to handle &#39;connected peers&#39;.
struct GNUNET_CONTAINER_MultiHashMap * request_map
Active requests from this neighbour, map of query to struct PeerRequest.
unsigned int pending_queries
Number of pending queries (replies are not counted)
static int call_iterator(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Function that calls the callback for each peer.
Closure for call_iterator().
#define P2P_SUCCESS_LIST_SIZE
Length of the P2P success tracker.
int is_query
GNUNET_YES if this is a query, GNUNET_NO for content.
Run with high priority (important requests).
static void ats_reserve_callback(void *cls, const struct GNUNET_PeerIdentity *peer, int32_t amount, struct GNUNET_TIME_Relative res_delay)
Function called by core upon success or failure of our bandwidth reservation request.
int GSF_enable_randomized_delays
Are we introducing randomized delays for better anonymity?
static char * expiration
Credential TTL.
void GSF_plan_add_(struct GSF_ConnectedPeer *cp, struct GSF_PendingRequest *pr)
Create a new query plan entry.
struct GNUNET_MessageHeader header
Type is GNUNET_MESSAGE_TYPE_DATASTORE_GET.
Definition: datastore.h:148
void GSF_connected_peer_get_identity_(const struct GSF_ConnectedPeer *cp, struct GNUNET_PeerIdentity *id)
Obtain the identity of a connected peer.
uint64_t rel_value_us
The actual value.
struct GNUNET_LOAD_Value * GNUNET_LOAD_value_init(struct GNUNET_TIME_Relative autodecline)
Create a new load value.
Definition: load.c:125
static int32_t bound_priority(uint32_t prio_in, struct GSF_ConnectedPeer *cp)
We&#39;ve received a request with the specified priority.
#define CS2P_SUCCESS_LIST_SIZE
Length of the CS-2-P success tracker.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
void GSF_push_stop_(struct GSF_ConnectedPeer *peer)
A peer disconnected from us.
Any type of block, used as a wildcard when searching.
static GNUNET_CronTime last_transmission
void GSF_connected_peer_init_()
Initialize peer management subsystem.
Response from FS service with a result for a previous FS search.
Definition: fs.h:336
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
Information per peer and request.
Definition: w32nsp.c:83
struct GNUNET_TIME_AbsoluteNBO expiration
When does this result expire?
Definition: fs.h:352
void handle_p2p_get(void *cls, const struct GetMessage *gm)
Handle P2P "QUERY" message.
#define GET_MESSAGE_BIT_TRANSMIT_TO
The peer identity of a peer that had claimed to have the content previously is included (can be used ...
int32_t ttl
Relative time to live in MILLISECONDS (network byte order)
static int cancel_pending_request(void *cls, const struct GNUNET_HashCode *query, void *value)
Cancel all requests associated with the peer.
size_t msize
Size of the message.
GNUNET_BLOCK_Type
Blocks in the datastore and the datacache must have a unique type.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed_with_priority(struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1178
struct GSF_PeerTransmitHandle * next
Kept in a doubly-linked list.
double GSF_current_priorities
Typical priorities we&#39;re seeing from other peers right now.
uint32_t priority
How important is this request (network byte order)
Delete any previous values for the given key before storing the given value.
struct GNUNET_TIME_Absolute ttl
Current TTL for the request.
struct GNUNET_PEERSTORE_IterateContext * GNUNET_PEERSTORE_iterate(struct GNUNET_PEERSTORE_Handle *h, const char *sub_system, const struct GNUNET_PeerIdentity *peer, const char *key, GNUNET_PEERSTORE_Processor callback, void *callback_cls)
Iterate over records matching supplied key information.
Handle for an entry in our delay list.
void GSF_peer_disconnect_handler(void *cls, const struct GNUNET_PeerIdentity *peer, void *internal_cls)
A peer disconnected from us.
size_t value_size
Size of value BLOB.
struct GNUNET_LOAD_Value * transmission_delay
How long does it typically take for us to transmit a message to this peer? (delay between the request...
const struct GNUNET_PeerIdentity * peer
The peer&#39;s identity (pointer).
#define RUNAVG_DELAY_N
Ratio for moving average delay calculation.
struct GNUNET_TIME_Absolute GNUNET_TIME_relative_to_absolute(struct GNUNET_TIME_Relative rel)
Convert relative time to an absolute time in the future.
Definition: time.c:245
uint32_t GNUNET_CRYPTO_random_u32(enum GNUNET_CRYPTO_Quality mode, uint32_t i)
Produce a random value.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
No special options (P2P-default).
static struct GNUNET_CONTAINER_MultiPeerMap * cp_map
Map from peer identities to struct GSF_ConnectPeer entries.
void GSF_peer_transmit_(struct GSF_ConnectedPeer *cp, int is_query, uint32_t priority, struct GNUNET_MQ_Envelope *env)
Transmit a message to the given peer as soon as possible.
struct GSF_PendingRequest * pr
Handle to generic request (generic: from peer or local client).
double GNUNET_LOAD_get_load(struct GNUNET_LOAD_Value *load)
Get the current load.
Definition: load.c:202
struct GNUNET_ATS_PerformanceHandle * GSF_ats
Handle to ATS service.
static void handle_p2p_reply(void *cls, enum GNUNET_BLOCK_EvaluationResult eval, struct GSF_PendingRequest *pr, uint32_t reply_anonymity_level, struct GNUNET_TIME_Absolute expiration, struct GNUNET_TIME_Absolute last_transmission, enum GNUNET_BLOCK_Type type, const void *data, size_t data_len)
Handle a reply to a pending request.
struct GSF_DelayedHandle * next
Kept in a doubly-linked list.
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
unsigned int GSF_cover_query_count
How many query messages have we received &#39;recently&#39; that have not yet been claimed as cover traffic...
int GNUNET_CONTAINER_multihashmap_iterate(struct GNUNET_CONTAINER_MultiHashMap *map, GNUNET_CONTAINER_HashMapIterator it, void *it_cls)
Iterate over all entries in the map.
struct GNUNET_STATISTICS_Handle * GSF_stats
Handle for reporting statistics.
int GNUNET_CONTAINER_multipeermap_remove(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, const void *value)
Remove the given key-value pair from the map.
#define GNUNET_NO
Definition: gnunet_common.h:81
double GNUNET_LOAD_get_average(struct GNUNET_LOAD_Value *load)
Get the average value given to update so far.
Definition: load.c:217
unsigned int last_client_replies_woff
Which offset in last_client_replies will be updated next? (we go round-robin).
shared data structures of gnunet-service-fs.c
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
struct GSF_PeerTransmitHandle * pth_head
Messages (replies, queries, content migration) we would like to send to this peer in the near future...
static int test_exist_cb(void *cls, const struct GNUNET_HashCode *hc, void *value)
Test if the query already exists.
struct GSF_ConnectedPeer * cp
Peer this request targets.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct GNUNET_SCHEDULER_Task * rc_delay_task
Task scheduled if we need to retry bandwidth reservation later.
struct GSF_DelayedHandle * delayed_tail
Messages (replies, queries, content migration) we would like to send to this peer in the near future...
uint32_t disk_respect
Respect rating for this peer on disk.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
unsigned int last_p2p_replies_woff
Which offset in last_p2p_replies will be updated next? (we go round-robin).
struct GNUNET_TIME_Absolute last_migration_block
Time until when we blocked this peer from migrating data to us.
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
struct GNUNET_CONTAINER_MultiPeerMap * GNUNET_CONTAINER_multipeermap_create(unsigned int len, int do_not_copy_keys)
Create a multi peer map (hash map for public keys of peers).
static int ret
Final status code.
Definition: gnunet-arm.c:89
void GNUNET_PEER_resolve(GNUNET_PEER_Id id, struct GNUNET_PeerIdentity *pid)
Convert an interned PID to a normal peer identity.
Definition: peer.c:226
uint64_t abs_value_us
The actual value.
GSF_ConnectedPeerIterator it
Function to call on each entry.
const struct GNUNET_CONFIGURATION_Handle * GSF_cfg
Our configuration.
void GSF_iterate_connected_peers_(GSF_ConnectedPeerIterator it, void *it_cls)
Iterate over all connected peers.
Internal representation of the hash map.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
uint32_t filter_mutator
The content hash should be mutated using this value before checking against the bloomfilter (used to ...
int did_reserve
GNUNET_YES if we did successfully reserve 32k bandwidth, GNUNET_NO if not.
End of preference list.
void GSF_peer_update_performance_(struct GSF_ConnectedPeer *cp, struct GNUNET_TIME_Absolute request_time, uint32_t request_priority)
Report on receiving a reply; update the performance record of the given peer.
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
void GNUNET_LOAD_update(struct GNUNET_LOAD_Value *load, uint64_t data)
Update the current load.
Definition: load.c:238
#define GNUNET_TIME_UNIT_FOREVER_ABS
Constant used to specify "forever".
#define _(String)
GNU gettext support macro.
Definition: platform.h:208
struct GNUNET_HashCode query
Primary query hash for this request.
A local client.
static void free_pending_request(struct PeerRequest *peerreq)
Free resources associated with the given peer request.
static struct GNUNET_TIME_Relative get_randomized_delay()
Get the randomized delay a response should be subjected to.
API to handle pending requests.
Public data (in the sense of not encapsulated within &#39;gnunet-service-fs_pr&#39;, not in the sense of netw...
enum GNUNET_BLOCK_Type type
Type of the incoming request.
double avg_priority
Average priority of successful replies.
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct...
Definition: gnunet_mq_lib.h:52
static void peer_request_destroy(void *cls)
Free the given request.
struct GNUNET_TIME_Relative avg_reply_delay
Average delay between sending the peer a request and getting a reply (only calculated over the reques...
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1246
API to manage query plan.
void GSF_update_peer_latency_(const struct GNUNET_PeerIdentity *id, struct GNUNET_TIME_Relative latency)
Update the latency information kept for the given peer.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_with_priority(enum GNUNET_SCHEDULER_Priority prio, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified priority.
Definition: scheduler.c:1200
static int32_t bound_ttl(int32_t ttl_in, uint32_t prio)
The priority level imposes a bound on the maximum value for the ttl that can be requested.
unsigned int GNUNET_PEER_Id
A GNUNET_PEER_Id is simply a shorter version of a "struct GNUNET_PeerIdentifier" that can be used ins...
struct GSF_DelayedHandle * delayed_head
Messages (replies, queries, content migration) we would like to send to this peer in the near future...
#define GNUNET_memcpy(dst, src, n)
struct GNUNET_ATS_ReservationContext * GNUNET_ATS_reserve_bandwidth(struct GNUNET_ATS_PerformanceHandle *ph, const struct GNUNET_PeerIdentity *peer, int32_t amount, GNUNET_ATS_ReservationCallback rcb, void *rcb_cls)
Reserve inbound bandwidth from the given peer.
void * value
Record value BLOB.
unsigned int pending_replies
Number of pending replies (queries are not counted)
static char * value
Value of the record to add/remove.
struct GNUNET_ATS_ReservationContext * rc
Context of our GNUNET_ATS_reserve_bandwidth call (or NULL).
static void schedule_transmission(struct GSF_PeerTransmitHandle *pth)
If ready (bandwidth reserved), try to schedule transmission via core for the given handle...
int GSF_pending_request_test_active_(struct GSF_PendingRequest *pr)
Check if the given request is still active.
uint32_t respect
Respect rating for this peer.
Message to the datastore service asking about specific content.
Definition: datastore.h:143
void GNUNET_PEERSTORE_disconnect(struct GNUNET_PEERSTORE_Handle *h, int sync_first)
Disconnect from the PEERSTORE service.
unsigned int GNUNET_MQ_get_length(struct GNUNET_MQ_Handle *mq)
Obtain the current length of the message queue.
Definition: mq.c:335
GNUNET_PEER_Id last_p2p_replies[8]
List of the last PIDs for which this peer successfully answered a query; We use 0 to indicate no succ...
uint32_t hash_bitmap
Which of the optional hash codes are present at the end of the message? See GET_MESSAGE_BIT_xx consta...
struct GNUNET_PEERSTORE_StoreContext * GNUNET_PEERSTORE_store(struct GNUNET_PEERSTORE_Handle *h, const char *sub_system, const struct GNUNET_PeerIdentity *peer, const char *key, const void *value, size_t size, struct GNUNET_TIME_Absolute expiry, enum GNUNET_PEERSTORE_StoreOption options, GNUNET_PEERSTORE_Continuation cont, void *cont_cls)
Store a new entry in the PEERSTORE.
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
struct GSF_PeerPerformanceData * GSF_get_peer_performance_data_(struct GSF_ConnectedPeer *cp)
Return the performance data record for the given peer.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1273
void GSF_handle_local_client_disconnect_(const struct GSF_LocalClient *lc)
Notification that a local client disconnected.
struct GSF_PeerPerformanceData ppd
Performance data for this peer.
struct GNUNET_HashCode query
Hashcodes of the file(s) we&#39;re looking for.
uint32_t reserved
Always zero.
struct GSF_ConnectedPeer * GSF_peer_get_(const struct GNUNET_PeerIdentity *peer)
Get a handle for a connected peer.
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:727
static void revive_migration(void *cls)
It may be time to re-start migrating content to this peer.
#define GET_MESSAGE_BIT_RETURN_TO
The peer identity of a peer waiting for the reply is included (used if the response should be transmi...
Last possible valid result.
int GNUNET_CONTAINER_multihashmap_remove(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, const void *value)
Remove the given key-value pair from the map.
struct GNUNET_PeerIdentity GSF_my_id
Identity of this peer.
void GSF_local_lookup_(struct GSF_PendingRequest *pr, GSF_LocalLookupContinuation cont, void *cont_cls)
Look up the request in the local datastore.
void GSF_peer_update_responder_client_(struct GSF_ConnectedPeer *cp, struct GSF_LocalClient *initiator_client)
Report on receiving a reply in response to an initiating client.
struct GNUNET_TIME_Relative GNUNET_TIME_relative_multiply(struct GNUNET_TIME_Relative rel, unsigned long long factor)
Multiply relative time by a given factor.
Definition: time.c:439
#define GNUNET_CONTAINER_DLL_insert_after(head, tail, other, element)
Insert an element into a DLL after the given other element.
Closure for test_exist_cb().
enum GNUNET_BLOCK_Type type
Type of the requested block.
int finished
Set to GNUNET_YES if we are done handling the query.
Internal representation of the hash map.
static struct GNUNET_PEERSTORE_Handle * peerstore
Handle to peerstore service.
static void peer_transmit(struct GSF_ConnectedPeer *cp)
Core is ready to transmit to a peer, get the message.
Handle to the PEERSTORE service.
Definition: peerstore_api.c:40
struct GNUNET_TIME_Relative GNUNET_TIME_relative_ntoh(struct GNUNET_TIME_RelativeNBO a)
Convert relative time from network byte order.
Definition: time.c:638
void GNUNET_STATISTICS_set(struct GNUNET_STATISTICS_Handle *handle, const char *name, uint64_t value, int make_persistent)
Set statistic value for the peer.
static void retry_reservation(void *cls)
(re)try to reserve bandwidth from the given peer.
A 512-bit hashcode.
uint32_t priority
Priority of this request.
#define GNUNET_TIME_UNIT_MILLISECONDS
One millisecond.
uint32_t type
Desired content type.
Definition: datastore.h:153
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
void GNUNET_PEER_decrement_rcs(const GNUNET_PEER_Id *ids, unsigned int count)
Decrement multiple RCs of peer identities by one.
Definition: peer.c:163
#define DBLOCK_SIZE
Size of the individual blocks used for file-sharing.
Definition: fs.h:40
void GNUNET_MQ_discard(struct GNUNET_MQ_Envelope *mqm)
Discard the message queue message, free all allocated resources.
Definition: mq.c:321
struct GNUNET_SCHEDULER_Task * delay_task
Task for the delay.
There must only be one value per key; storing a value should fail if a value under the same key alrea...
struct GSF_ConnectedPeer * cp
Which specific peer issued this request?
struct GNUNET_MQ_Envelope * env
Envelope with the actual message.
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.
struct GNUNET_HashCode key
The key used in the DHT.
unsigned int last_request_times_off
Current offset into last_request_times ring buffer.
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
int32_t ttl
Relative TTL of the incoming request.
struct GNUNET_TIME_RelativeNBO GNUNET_TIME_relative_hton(struct GNUNET_TIME_Relative a)
Convert relative time to network byte order.
Definition: time.c:622
int GSF_test_get_load_too_high_(uint32_t priority)
Test if the DATABASE (GET) load on this peer is too high to even consider processing the query at all...
unsigned int delay_queue_size
Number of entries in delayed_head DLL.
struct GNUNET_PEERSTORE_Handle * GNUNET_PEERSTORE_connect(const struct GNUNET_CONFIGURATION_Handle *cfg)
Connect to the PEERSTORE service.
static struct GNUNET_SCHEDULER_Task * fr_task
Task used to flush respect values to disk.
GNUNET_BLOCK_EvaluationResult
Possible ways for how a block may relate to a query.
void GSF_iterate_pending_requests_(GSF_PendingRequestIterator it, void *cls)
Iterate over all pending requests.
struct GNUNET_TIME_Absolute last_request_times[24]
Transmission times for the last MAX_QUEUE_PER_PEER requests for this peer.
void GSF_consider_forwarding(void *cls, struct GSF_PendingRequest *pr, enum GNUNET_BLOCK_EvaluationResult result)
Function to be called after we&#39;re done processing replies from the local lookup.
static int change_peer_respect(struct GSF_ConnectedPeer *cp, int value)
Increase the peer&#39;s respect by a value.
Message send by a peer that wants to be excluded from migration for a while.
struct GSF_PeerTransmitHandle * prev
Kept in a doubly-linked list.
static void peer_respect_cb(void *cls, const struct GNUNET_PEERSTORE_Record *record, const char *emsg)
Function called by PEERSTORE with peer respect record.
struct GNUNET_SCHEDULER_Task * kill_task
Task for asynchronous stopping of this request.
int GNUNET_CONTAINER_multihashmap_put(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
void * it_cls
Closure for it.
uint32_t type
Type of the block (in big endian).
Definition: fs.h:347
GNUNET_PEER_Id pid
The peer&#39;s identity (interned version).
#define GNUNET_TIME_UNIT_ZERO
Relative time zero.
int was_reserved
Did we get a reservation already?
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message...
struct GNUNET_TIME_RelativeNBO duration
How long should the block last?
Allow multiple values with the same key.
Handle to a message queue.
Definition: mq.c:85
int GSF_pending_request_test_target_(struct GSF_PendingRequest *pr, const struct GNUNET_PeerIdentity *target)
Is the given target a legitimate peer for forwarding the given request?
void GSF_push_start_(struct GSF_ConnectedPeer *peer)
A peer connected to us.
int GNUNET_CONTAINER_multipeermap_put(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
struct GNUNET_SCHEDULER_Task * mig_revive_task
Task scheduled to revive migration to this peer.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
#define N
The identity of the host (wraps the signing key of the peer).
#define RESPECT_FLUSH_FREQ
How often do we flush respect values to disk?
struct GNUNET_TIME_Absolute migration_blocked_until
Point in time until which this peer does not want us to migrate content to it.
struct GNUNET_LOAD_Value * GSF_rt_entry_lifetime
How long do requests typically stay in the routing table?
struct GSF_PendingRequestData * GSF_pending_request_get_data_(struct GSF_PendingRequest *pr)
Obtain the public data associated with a pending request.
void * GSF_peer_connect_handler(void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_MQ_Handle *mq)
A peer connected to us.
int32_t priority
Priority of the incoming request.
void GNUNET_ATS_reserve_bandwidth_cancel(struct GNUNET_ATS_ReservationContext *rc)
Cancel request for reserving bandwidth.
static int consider_peer_for_forwarding(void *cls, const struct GNUNET_HashCode *key, struct GSF_PendingRequest *pr)
Function called for each pending request whenever a new peer connects, giving us a chance to decide a...
Request must only be forwarded (no routing)
Performance data kept for a peer.
struct GSF_ConnectedPeer * cp
Peer this transmission belongs to.
const struct GNUNET_PeerIdentity * GSF_connected_peer_get_identity2_(const struct GSF_ConnectedPeer *cp)
Obtain the identity of a connected peer.
struct GSF_PeerTransmitHandle * pth_tail
Messages (replies, queries, content migration) we would like to send to this peer in the near future...
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_duration(struct GNUNET_TIME_Absolute whence)
Get the duration of an operation as the difference of the current time and the given start time "henc...
Definition: time.c:373
struct GNUNET_MQ_Handle * mq
Handle for an active request for transmission to this peer.
#define GNUNET_LOAD_value_free(lv)
Free a load value.
void GNUNET_ATS_performance_change_preference(struct GNUNET_ATS_PerformanceHandle *ph, const struct GNUNET_PeerIdentity *peer,...)
Change preferences for the given peer.
struct GNUNET_PEERSTORE_IterateContext * respect_iterate_req
Handle to the PEERSTORE iterate request for peer respect value.
#define GNUNET_MESSAGE_TYPE_FS_MIGRATION_STOP
Peer asks us to stop migrating content towards it for a while.
int GNUNET_CONTAINER_multihashmap_get_multiple(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, GNUNET_CONTAINER_HashMapIterator it, void *it_cls)
Iterate over all entries in the map that match a particular key.
void * GNUNET_CONTAINER_multipeermap_get(const struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key)
Given a key find a value in the map matching the key.
Single PEERSTORE record.
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
void GNUNET_PEER_change_rc(GNUNET_PEER_Id id, int delta)
Change the reference counter of an interned PID.
Definition: peer.c:198
#define GNUNET_log(kind,...)
static void cron_flush_respect(void *cls)
Call this method periodically to flush respect information to disk.
Entry in list of pending tasks.
Definition: scheduler.c:134
#define TTL_DECREMENT
By which amount do we decrement the TTL for simple forwarding / indirection of the query; in milli-se...
Change the peer&#39;s bandwidth value (value per byte of bandwidth in the goal function) to the given amo...
A connected peer.
void GNUNET_PEERSTORE_iterate_cancel(struct GNUNET_PEERSTORE_IterateContext *ic)
Cancel an iterate request Please do not call after the iterate request is done.
struct GSF_LocalClient * last_client_replies[8]
List of the last clients for which this peer successfully answered a query.
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
void GSF_plan_notify_peer_disconnect_(const struct GSF_ConnectedPeer *cp)
Notify the plan about a peer being no longer available; destroy all entries associated with this peer...
unsigned int GSF_cover_content_count
How many content messages have we received &#39;recently&#39; that have not yet been claimed as cover traffic...
static int flush_respect(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Write peer-respect information to a file - flush the buffer entry!
struct GNUNET_TIME_Relative GSF_avg_latency
Running average of the observed latency to other peers (round trip).
struct GSF_PendingRequest * GSF_pending_request_create_(enum GSF_PendingRequestOptions options, enum GNUNET_BLOCK_Type type, const struct GNUNET_HashCode *query, const struct GNUNET_PeerIdentity *target, const char *bf_data, size_t bf_size, uint32_t mingle, uint32_t anonymity_level, uint32_t priority, int32_t ttl, GNUNET_PEER_Id sender_pid, GNUNET_PEER_Id origin_pid, const struct GNUNET_HashCode *replies_seen, unsigned int replies_seen_count, GSF_PendingRequestReplyHandler rh, void *rh_cls)
Create a new pending request.
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_remaining(struct GNUNET_TIME_Absolute future)
Given a timestamp in the future, how much time remains until then?
Definition: time.c:331
struct GNUNET_MQ_Envelope * env
Envelope of the message that was delayed.
enum GNUNET_TESTBED_UnderlayLinkModelType type
the type of this model
void(* GSF_ConnectedPeerIterator)(void *cls, const struct GNUNET_PeerIdentity *peer, struct GSF_ConnectedPeer *cp, const struct GSF_PeerPerformanceData *ppd)
Signature of function called on a connected peer.
Time for absolute times used by GNUnet, in microseconds.
#define GNUNET_YES
Definition: gnunet_common.h:80
struct GSF_DelayedHandle * prev
Kept in a doubly-linked list.
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:353
void handle_p2p_migration_stop(void *cls, const struct MigrationStopMessage *msm)
Handle P2P GNUNET_MESSAGE_TYPE_FS_MIGRATION_STOP message.
struct GNUNET_TIME_Absolute transmission_request_start_time
Time when this transmission request was issued.
uint32_t priority
Priority that this request (still) has for us.
void GSF_connected_peer_done_()
Shutdown peer management subsystem.
void GNUNET_LOAD_value_set_decline(struct GNUNET_LOAD_Value *load, struct GNUNET_TIME_Relative autodecline)
Change the value by which the load automatically declines.
Definition: load.c:143
#define MAX_QUEUE_PER_PEER
Maximum number of outgoing messages we queue per peer.
unsigned int GNUNET_CONTAINER_multipeermap_size(const struct GNUNET_CONTAINER_MultiPeerMap *map)
Get the number of key-value pairs in the map.
void GSF_block_peer_migration_(struct GSF_ConnectedPeer *cp, struct GNUNET_TIME_Absolute block_time)
Ask a peer to stop migrating data to us until the given point in time.
An active request.
support for pushing out content
#define GNUNET_CONSTANTS_MAX_CORK_DELAY
How long do we delay messages to get larger packet sizes (CORKing)?
void GSF_peer_update_responder_peer_(struct GSF_ConnectedPeer *cp, const struct GSF_ConnectedPeer *initiator_peer)
Report on receiving a reply in response to an initiating peer.
void GSF_pending_request_cancel_(struct GSF_PendingRequest *pr, int full_cleanup)
Explicitly cancel a pending request.
uint64_t inc_preference
Increase in traffic preference still to be submitted to the core service for this peer...
uint32_t data
The data value.
struct GNUNET_TIME_AbsoluteNBO GNUNET_TIME_absolute_hton(struct GNUNET_TIME_Absolute a)
Convert absolute time to network byte order.
Definition: time.c:654
#define GNUNET_MESSAGE_TYPE_FS_PUT
P2P response with content or active migration of content.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
int has_started
Has this request been started yet (local/p2p operations)? Or are we still constructing it...
GSF_PendingRequestOptions
Options for pending requests (bits to be ORed).
No good quality of the operation is needed (i.e., random numbers can be pseudo-random).
static void transmit_delayed_now(void *cls)
The artificial delay is over, transmit the message now.
Context for a iterate request.
GNUNET_PEER_Id GNUNET_PEER_intern(const struct GNUNET_PeerIdentity *pid)
Intern an peer identity.
Definition: peer.c:107
#define GNUNET_free(ptr)
Wrapper around free.
Time for relative time used by GNUnet, in microseconds.
static int clean_local_client(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Iterator to remove references to LC entry.
Linked list of pending reservations.
static struct GNUNET_TRANSPORT_PluginMonitor * pm
Handle if we are monitoring plugin session activity.
#define gettext_noop(String)
Definition: gettext.h:69
Handle to cancel a transmission request.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:965