GNUnet  0.11.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 ( \
47  GNUNET_TIME_UNIT_MINUTES, 5)
48 
52 #define REPLY_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, \
53  2)
54 
58 #define INSANE_STATISTICS GNUNET_NO
59 
60 
65 {
70 
75 
80 
85 
90 
94  int is_query;
95 
100 
104  uint32_t priority;
105 };
106 
107 
112 {
117 
122 
127 
132 
137 
141  size_t msize;
142 };
143 
144 
149 {
154 
159 
164 };
165 
166 
171 {
176 
181  struct GNUNET_TIME_Absolute last_migration_block;
182 
187 
193 
199 
205 
211 
216 
221 
226 
232 
237  uint64_t inc_preference;
238 
242  unsigned int delay_queue_size;
243 
247  uint32_t disk_respect;
248 
253  unsigned int last_p2p_replies_woff;
254 
260 
265 
271 
276 };
277 
278 
283 
288 
293 
294 
301 void
303  struct GNUNET_TIME_Relative latency)
304 {
305  struct GSF_ConnectedPeer *cp;
306 
307  cp = GSF_peer_get_ (id);
308  if (NULL == cp)
309  return; /* we're not yet connected at the core level, ignore */
311  latency);
312 }
313 
314 
323 {
324  return &cp->ppd;
325 }
326 
327 
333 static void
335 
336 
347 static void
348 ats_reserve_callback (void *cls,
349  const struct GNUNET_PeerIdentity *peer,
350  int32_t amount,
351  struct GNUNET_TIME_Relative res_delay);
352 
353 
360 static void
362 {
363  struct GSF_ConnectedPeer *cp;
364  struct GNUNET_PeerIdentity target;
365 
366  cp = pth->cp;
367  GNUNET_assert (0 != cp->ppd.pid);
368  GNUNET_PEER_resolve (cp->ppd.pid, &target);
369 
370  if (0 != cp->inc_preference)
371  {
373  &target,
375  (double) cp->inc_preference,
377  cp->inc_preference = 0;
378  }
379 
380  if ((GNUNET_YES == pth->is_query) &&
381  (GNUNET_YES != pth->was_reserved))
382  {
383  /* query, need reservation */
384  if (GNUNET_YES != cp->did_reserve)
385  return; /* not ready */
386  cp->did_reserve = GNUNET_NO;
387  /* reservation already done! */
388  pth->was_reserved = GNUNET_YES;
390  &target,
391  DBLOCK_SIZE,
393  cp);
394  return;
395  }
396  peer_transmit (cp);
397 }
398 
399 
405 static void
407 {
408  struct GSF_PeerTransmitHandle *pth = cp->pth_head;
409  struct GSF_PeerTransmitHandle *pos;
410 
411  if (NULL == pth)
412  return;
414  cp->pth_tail,
415  pth);
416  if (GNUNET_YES == pth->is_query)
417  {
419  % MAX_QUEUE_PER_PEER] =
421  GNUNET_assert (0 < cp->ppd.pending_queries--);
422  }
423  else if (GNUNET_NO == pth->is_query)
424  {
425  GNUNET_assert (0 < cp->ppd.pending_replies--);
426  }
430  GNUNET_MQ_send (cp->mq,
431  pth->env);
432  GNUNET_free (pth);
433  if (NULL != (pos = cp->pth_head))
434  {
435  GNUNET_assert (pos != pth);
436  schedule_transmission (pos);
437  }
438 }
439 
440 
446 static void
447 retry_reservation (void *cls)
448 {
449  struct GSF_ConnectedPeer *cp = cls;
450  struct GNUNET_PeerIdentity target;
451 
452  GNUNET_PEER_resolve (cp->ppd.pid, &target);
453  cp->rc_delay_task = NULL;
454  cp->rc =
456  &target,
457  DBLOCK_SIZE,
458  &ats_reserve_callback, cp);
459 }
460 
461 
472 static void
474  const struct GNUNET_PeerIdentity *peer,
475  int32_t amount,
476  struct GNUNET_TIME_Relative res_delay)
477 {
478  struct GSF_ConnectedPeer *cp = cls;
479  struct GSF_PeerTransmitHandle *pth;
480 
482  "Reserved %d bytes / need to wait %s for reservation\n",
483  (int) amount,
485  cp->rc = NULL;
486  if (0 == amount)
487  {
488  cp->rc_delay_task =
489  GNUNET_SCHEDULER_add_delayed (res_delay,
491  cp);
492  return;
493  }
494  cp->did_reserve = GNUNET_YES;
495  pth = cp->pth_head;
496  if (NULL != pth)
497  {
498  /* reservation success, try transmission now! */
499  peer_transmit (cp);
500  }
501 }
502 
503 
511 static void
512 peer_respect_cb (void *cls,
513  const struct GNUNET_PEERSTORE_Record *record,
514  const char *emsg)
515 {
516  struct GSF_ConnectedPeer *cp = cls;
517 
518  GNUNET_assert (NULL != cp->respect_iterate_req);
519  if ((NULL != record) &&
520  (sizeof(cp->disk_respect) == record->value_size))
521  {
522  cp->disk_respect = *((uint32_t *) record->value);
523  cp->ppd.respect += *((uint32_t *) record->value);
524  }
525  GSF_push_start_ (cp);
526  if (NULL != record)
528  cp->respect_iterate_req = NULL;
529 }
530 
531 
542 static int
544  const struct GNUNET_HashCode *key,
545  struct GSF_PendingRequest *pr)
546 {
547  struct GSF_ConnectedPeer *cp = cls;
548  struct GNUNET_PeerIdentity pid;
549 
550  if (GNUNET_YES !=
552  return GNUNET_YES; /* request is not actually active, skip! */
554  if (GNUNET_YES !=
556  {
558  gettext_noop ("# Loopback routes suppressed"),
559  1,
560  GNUNET_NO);
561  return GNUNET_YES;
562  }
563  GSF_plan_add_ (cp, pr);
564  return GNUNET_YES;
565 }
566 
567 
577 void *
579  const struct GNUNET_PeerIdentity *peer,
580  struct GNUNET_MQ_Handle *mq)
581 {
582  struct GSF_ConnectedPeer *cp;
583 
584  if (0 ==
586  peer))
587  return NULL;
589  "Connected to peer %s\n",
590  GNUNET_i2s (peer));
591  cp = GNUNET_new (struct GSF_ConnectedPeer);
592  cp->ppd.pid = GNUNET_PEER_intern (peer);
593  cp->ppd.peer = peer;
594  cp->mq = mq;
596  cp->rc =
598  peer,
599  DBLOCK_SIZE,
600  &ats_reserve_callback, cp);
602  GNUNET_YES);
606  cp),
607  cp,
610  gettext_noop ("# peers connected"),
612  GNUNET_NO);
614  = GNUNET_PEERSTORE_iterate (peerstore,
615  "fs",
616  peer,
617  "respect",
619  cp);
621  cp);
622  return cp;
623 }
624 
625 
632 static void
633 revive_migration (void *cls)
634 {
635  struct GSF_ConnectedPeer *cp = cls;
636  struct GNUNET_TIME_Relative bt;
637 
638  cp->mig_revive_task = NULL;
640  if (0 != bt.rel_value_us)
641  {
642  /* still time left... */
643  cp->mig_revive_task =
645  return;
646  }
647  GSF_push_start_ (cp);
648 }
649 
650 
657 struct GSF_ConnectedPeer *
658 GSF_peer_get_ (const struct GNUNET_PeerIdentity *peer)
659 {
660  if (NULL == cp_map)
661  return NULL;
662  return GNUNET_CONTAINER_multipeermap_get (cp_map, peer);
663 }
664 
665 
672 void
674  const struct MigrationStopMessage *msm)
675 {
676  struct GSF_ConnectedPeer *cp = cls;
677  struct GNUNET_TIME_Relative bt;
678 
680  gettext_noop ("# migration stop messages received"),
681  1, GNUNET_NO);
684  _ ("Migration of content to peer `%s' blocked for %s\n"),
685  GNUNET_i2s (cp->ppd.peer),
688  if ((NULL == cp->mig_revive_task) &&
689  (NULL == cp->respect_iterate_req))
690  {
691  GSF_push_stop_ (cp);
692  cp->mig_revive_task =
694  &revive_migration, cp);
695  }
696 }
697 
698 
704 static void
706 {
707  struct GSF_ConnectedPeer *cp = peerreq->cp;
708  struct GSF_PendingRequestData *prd;
709 
710  prd = GSF_pending_request_get_data_ (peerreq->pr);
711  if (NULL != peerreq->kill_task)
712  {
714  peerreq->kill_task = NULL;
715  }
717  gettext_noop ("# P2P searches active"),
718  -1,
719  GNUNET_NO);
722  &prd->query,
723  peerreq));
724  GNUNET_free (peerreq);
725 }
726 
727 
736 static int
738  const struct GNUNET_HashCode *query,
739  void *value)
740 {
741  struct PeerRequest *peerreq = value;
742  struct GSF_PendingRequest *pr = peerreq->pr;
743 
744  free_pending_request (peerreq);
746  GNUNET_NO);
747  return GNUNET_OK;
748 }
749 
750 
756 static void
758 {
759  struct PeerRequest *peerreq = cls;
760  struct GSF_PendingRequest *pr = peerreq->pr;
761  struct GSF_PendingRequestData *prd;
762 
763  peerreq->kill_task = NULL;
766  &prd->query,
767  peerreq);
768 }
769 
770 
776 static void
778 {
779  struct GSF_DelayedHandle *dh = cls;
780  struct GSF_ConnectedPeer *cp = dh->cp;
781 
783  cp->delayed_tail,
784  dh);
785  cp->delay_queue_size--;
786  GSF_peer_transmit_ (cp,
787  GNUNET_NO,
788  UINT32_MAX,
789  dh->env);
790  GNUNET_free (dh);
791 }
792 
793 
799 static struct GNUNET_TIME_Relative
801 {
802  struct GNUNET_TIME_Relative ret;
803 
804  ret =
808  2 * GSF_avg_latency.rel_value_us + 1));
809 #if INSANE_STATISTICS
812  ("# artificial delays introduced (ms)"),
813  ret.rel_value_us / 1000LL, GNUNET_NO);
814 #endif
815  return ret;
816 }
817 
818 
837 static void
838 handle_p2p_reply (void *cls,
840  struct GSF_PendingRequest *pr,
841  uint32_t reply_anonymity_level,
844  enum GNUNET_BLOCK_Type type,
845  const void *data,
846  size_t data_len)
847 {
848  struct PeerRequest *peerreq = cls;
849  struct GSF_ConnectedPeer *cp = peerreq->cp;
850  struct GSF_PendingRequestData *prd;
851  struct GNUNET_MQ_Envelope *env;
852  struct PutMessage *pm;
853  size_t msize;
854 
855  GNUNET_assert (data_len + sizeof(struct PutMessage) <
857  GNUNET_assert (peerreq->pr == pr);
859  if (NULL == data)
860  {
861  free_pending_request (peerreq);
862  return;
863  }
865  if ((prd->type != type) && (GNUNET_BLOCK_TYPE_ANY != prd->type))
866  {
869  ("# replies dropped due to type mismatch"),
870  1, GNUNET_NO);
871  return;
872  }
874  "Transmitting result for query `%s' to peer\n",
875  GNUNET_h2s (&prd->query));
877  gettext_noop ("# replies received for other peers"),
878  1, GNUNET_NO);
879  msize = sizeof(struct PutMessage) + data_len;
880  if (msize >= GNUNET_MAX_MESSAGE_SIZE)
881  {
882  GNUNET_break (0);
883  return;
884  }
885  if ((UINT32_MAX != reply_anonymity_level) && (reply_anonymity_level > 1))
886  {
887  if (reply_anonymity_level - 1 > GSF_cover_content_count)
888  {
891  (
892  "# replies dropped due to insufficient cover traffic"),
893  1, GNUNET_NO);
894  return;
895  }
896  GSF_cover_content_count -= (reply_anonymity_level - 1);
897  }
898 
899  env = GNUNET_MQ_msg_extra (pm,
900  data_len,
902  pm->type = htonl (type);
903  pm->expiration = GNUNET_TIME_absolute_hton (expiration);
904  GNUNET_memcpy (&pm[1],
905  data,
906  data_len);
907  if ((UINT32_MAX != reply_anonymity_level) &&
908  (0 != reply_anonymity_level) &&
910  {
911  struct GSF_DelayedHandle *dh;
912 
913  dh = GNUNET_new (struct GSF_DelayedHandle);
914  dh->cp = cp;
915  dh->env = env;
916  dh->msize = msize;
918  cp->delayed_tail,
919  dh);
920  cp->delay_queue_size++;
921  dh->delay_task =
924  dh);
925  }
926  else
927  {
928  GSF_peer_transmit_ (cp,
929  GNUNET_NO,
930  UINT32_MAX,
931  env);
932  }
934  return;
935  if (NULL == peerreq->kill_task)
936  {
939  (
940  "# P2P searches destroyed due to ultimate reply"),
941  1,
942  GNUNET_NO);
943  peerreq->kill_task =
945  peerreq);
946  }
947 }
948 
949 
958 static int
960 {
961  if (0 == value)
962  return 0;
963  GNUNET_assert (NULL != cp);
964  if (value > 0)
965  {
966  if (cp->ppd.respect + value < cp->ppd.respect)
967  {
968  value = UINT32_MAX - cp->ppd.respect;
969  cp->ppd.respect = UINT32_MAX;
970  }
971  else
972  cp->ppd.respect += value;
973  }
974  else
975  {
976  if (cp->ppd.respect < -value)
977  {
978  value = -cp->ppd.respect;
979  cp->ppd.respect = 0;
980  }
981  else
982  cp->ppd.respect += value;
983  }
984  return value;
985 }
986 
987 
996 static int32_t
997 bound_priority (uint32_t prio_in,
998  struct GSF_ConnectedPeer *cp)
999 {
1000 #define N ((double) 128.0)
1001  uint32_t ret;
1002  double rret;
1003  int ld;
1004 
1005  ld = GSF_test_get_load_too_high_ (0);
1006  if (GNUNET_SYSERR == ld)
1007  {
1008 #if INSANE_STATISTICS
1010  gettext_noop
1011  ("# requests done for free (low load)"), 1,
1012  GNUNET_NO);
1013 #endif
1014  return 0; /* excess resources */
1015  }
1016  if (prio_in > INT32_MAX)
1017  prio_in = INT32_MAX;
1018  ret = -change_peer_respect (cp, -(int) prio_in);
1019  if (ret > 0)
1020  {
1021  if (ret > GSF_current_priorities + N)
1022  rret = GSF_current_priorities + N;
1023  else
1024  rret = ret;
1025  GSF_current_priorities = (GSF_current_priorities * (N - 1) + rret) / N;
1026  }
1027  if ((GNUNET_YES == ld) && (ret > 0))
1028  {
1029  /* try with charging */
1030  ld = GSF_test_get_load_too_high_ (ret);
1031  }
1032  if (GNUNET_YES == ld)
1033  {
1035  gettext_noop
1036  ("# request dropped, priority insufficient"), 1,
1037  GNUNET_NO);
1038  /* undo charge */
1039  change_peer_respect (cp, (int) ret);
1040  return -1; /* not enough resources */
1041  }
1042  else
1043  {
1045  gettext_noop
1046  ("# requests done for a price (normal load)"),
1047  1,
1048  GNUNET_NO);
1049  }
1050 #undef N
1051  return ret;
1052 }
1053 
1054 
1064 static int32_t
1065 bound_ttl (int32_t ttl_in,
1066  uint32_t prio)
1067 {
1068  unsigned long long allowed;
1069 
1070  if (ttl_in <= 0)
1071  return ttl_in;
1072  allowed = ((unsigned long long) prio) * TTL_DECREMENT / 1000;
1073  if (ttl_in > allowed)
1074  {
1075  if (allowed >= (1 << 30))
1076  return 1 << 30;
1077  return allowed;
1078  }
1079  return ttl_in;
1080 }
1081 
1082 
1087 {
1091  int32_t priority;
1092 
1096  int32_t ttl;
1097 
1102 
1107 };
1108 
1109 
1120 static int
1121 test_exist_cb (void *cls,
1122  const struct GNUNET_HashCode *hc,
1123  void *value)
1124 {
1125  struct TestExistClosure *tec = cls;
1126  struct PeerRequest *peerreq = value;
1127  struct GSF_PendingRequest *pr;
1128  struct GSF_PendingRequestData *prd;
1129 
1130  pr = peerreq->pr;
1131  prd = GSF_pending_request_get_data_ (pr);
1132  if (prd->type != tec->type)
1133  return GNUNET_YES;
1134  if (prd->ttl.abs_value_us >=
1135  GNUNET_TIME_absolute_get ().abs_value_us + tec->ttl * 1000LL)
1136  {
1137  /* existing request has higher TTL, drop new one! */
1138  prd->priority += tec->priority;
1140  "Have existing request with higher TTL, dropping new request.\n");
1142  gettext_noop
1143  ("# requests dropped due to higher-TTL request"),
1144  1, GNUNET_NO);
1145  tec->finished = GNUNET_YES;
1146  return GNUNET_NO;
1147  }
1148  /* existing request has lower TTL, drop old one! */
1149  tec->priority += prd->priority;
1150  free_pending_request (peerreq);
1152  GNUNET_YES);
1153  return GNUNET_NO;
1154 }
1155 
1156 
1166 void
1167 handle_p2p_get (void *cls,
1168  const struct GetMessage *gm)
1169 {
1170  struct GSF_ConnectedPeer *cps = cls;
1171  struct PeerRequest *peerreq;
1172  struct GSF_PendingRequest *pr;
1173  struct GSF_ConnectedPeer *cp;
1174  const struct GNUNET_PeerIdentity *target;
1176  uint16_t msize;
1177  unsigned int bits;
1178  const struct GNUNET_PeerIdentity *opt;
1179  uint32_t bm;
1180  size_t bfsize;
1181  uint32_t ttl_decrement;
1182  struct TestExistClosure tec;
1183  GNUNET_PEER_Id spid;
1184  const struct GSF_PendingRequestData *prd;
1185 
1186  msize = ntohs (gm->header.size);
1187  tec.type = ntohl (gm->type);
1188  bm = ntohl (gm->hash_bitmap);
1189  bits = 0;
1190  while (bm > 0)
1191  {
1192  if (1 == (bm & 1))
1193  bits++;
1194  bm >>= 1;
1195  }
1196  opt = (const struct GNUNET_PeerIdentity *) &gm[1];
1197  bfsize = msize - sizeof(struct GetMessage) - bits * sizeof(struct
1200  gettext_noop
1201  ("# GET requests received (from other peers)"),
1202  1,
1203  GNUNET_NO);
1205  bm = ntohl (gm->hash_bitmap);
1206  bits = 0;
1207  if (0 != (bm & GET_MESSAGE_BIT_RETURN_TO))
1208  cp = GSF_peer_get_ (&opt[bits++]);
1209  else
1210  cp = cps;
1211  if (NULL == cp)
1212  {
1213  if (0 != (bm & GET_MESSAGE_BIT_RETURN_TO))
1215  "Failed to find RETURN-TO peer `%s' in connection set. Dropping query.\n",
1216  GNUNET_i2s (&opt[bits - 1]));
1217 
1218  else
1220  "Failed to find peer `%s' in connection set. Dropping query.\n",
1221  GNUNET_i2s (cps->ppd.peer));
1223  gettext_noop
1224  (
1225  "# requests dropped due to missing reverse route"),
1226  1,
1227  GNUNET_NO);
1228  return;
1229  }
1230  unsigned int queue_size = GNUNET_MQ_get_length (cp->mq);
1231  queue_size += cp->ppd.pending_replies + cp->delay_queue_size;
1232  if (queue_size > MAX_QUEUE_PER_PEER)
1233  {
1235  "Peer `%s' has too many replies queued already. Dropping query.\n",
1236  GNUNET_i2s (cps->ppd.peer));
1238  gettext_noop (
1239  "# requests dropped due to full reply queue"),
1240  1,
1241  GNUNET_NO);
1242  return;
1243  }
1244  /* note that we can really only check load here since otherwise
1245  * peers could find out that we are overloaded by not being
1246  * disconnected after sending us a malformed query... */
1247  tec.priority = bound_priority (ntohl (gm->priority),
1248  cps);
1249  if (tec.priority < 0)
1250  {
1252  "Dropping query from `%s', this peer is too busy.\n",
1253  GNUNET_i2s (cps->ppd.peer));
1254  return;
1255  }
1257  "Received request for `%s' of type %u from peer `%s' with flags %u\n",
1258  GNUNET_h2s (&gm->query),
1259  (unsigned int) tec.type,
1260  GNUNET_i2s (cps->ppd.peer),
1261  (unsigned int) bm);
1262  target =
1263  (0 !=
1264  (bm & GET_MESSAGE_BIT_TRANSMIT_TO)) ? (&opt[bits++]) : NULL;
1265  options = GSF_PRO_DEFAULTS;
1266  spid = 0;
1267  if ((GNUNET_LOAD_get_load (cp->ppd.transmission_delay) > 3 * (1
1268  + 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 (
1341  "# P2P query messages received and processed"),
1342  1,
1343  GNUNET_NO);
1345  gettext_noop ("# P2P searches active"),
1346  1,
1347  GNUNET_NO);
1349  GSF_local_lookup_ (pr,
1351  NULL);
1352 }
1353 
1354 
1367 void
1369  int is_query,
1370  uint32_t priority,
1371  struct GNUNET_MQ_Envelope *env)
1372 {
1373  struct GSF_PeerTransmitHandle *pth;
1374  struct GSF_PeerTransmitHandle *pos;
1375  struct GSF_PeerTransmitHandle *prev;
1376 
1377  pth = GNUNET_new (struct GSF_PeerTransmitHandle);
1379  pth->env = env;
1380  pth->is_query = is_query;
1381  pth->priority = priority;
1382  pth->cp = cp;
1383  /* insertion sort (by priority, descending) */
1384  prev = NULL;
1385  pos = cp->pth_head;
1386  while ((NULL != pos) && (pos->priority > priority))
1387  {
1388  prev = pos;
1389  pos = pos->next;
1390  }
1392  cp->pth_tail,
1393  prev,
1394  pth);
1395  if (GNUNET_YES == is_query)
1396  cp->ppd.pending_queries++;
1397  else if (GNUNET_NO == is_query)
1398  cp->ppd.pending_replies++;
1399  schedule_transmission (pth);
1400 }
1401 
1402 
1410 void
1412  struct GNUNET_TIME_Absolute request_time,
1413  uint32_t request_priority)
1414 {
1415  struct GNUNET_TIME_Relative delay;
1416 
1417  delay = GNUNET_TIME_absolute_get_duration (request_time);
1420  + delay.rel_value_us) / RUNAVG_DELAY_N;
1421  cp->ppd.avg_priority =
1422  (cp->ppd.avg_priority * (RUNAVG_DELAY_N - 1)
1423  + request_priority) / RUNAVG_DELAY_N;
1424 }
1425 
1426 
1434 void
1436  struct GSF_LocalClient *initiator_client)
1437 {
1439  % CS2P_SUCCESS_LIST_SIZE] = initiator_client;
1440 }
1441 
1442 
1450 void
1452  const struct GSF_ConnectedPeer *initiator_peer)
1453 {
1454  unsigned int woff;
1455 
1457  GNUNET_PEER_change_rc (cp->ppd.last_p2p_replies[woff], -1);
1458  cp->ppd.last_p2p_replies[woff] = initiator_peer->ppd.pid;
1459  GNUNET_PEER_change_rc (initiator_peer->ppd.pid, 1);
1460  cp->last_p2p_replies_woff = (woff + 1) % P2P_SUCCESS_LIST_SIZE;
1461 }
1462 
1463 
1472 static int
1473 flush_respect (void *cls,
1474  const struct GNUNET_PeerIdentity *key,
1475  void *value)
1476 {
1477  struct GSF_ConnectedPeer *cp = value;
1478  struct GNUNET_PeerIdentity pid;
1479 
1480  if (cp->ppd.respect == cp->disk_respect)
1481  return GNUNET_OK; /* unchanged */
1482  GNUNET_assert (0 != cp->ppd.pid);
1483  GNUNET_PEER_resolve (cp->ppd.pid, &pid);
1484  GNUNET_PEERSTORE_store (peerstore, "fs", &pid, "respect", &cp->ppd.respect,
1485  sizeof(cp->ppd.respect),
1488  NULL,
1489  NULL);
1490  return GNUNET_OK;
1491 }
1492 
1493 
1502 void
1504  const struct GNUNET_PeerIdentity *peer,
1505  void *internal_cls)
1506 {
1507  struct GSF_ConnectedPeer *cp = internal_cls;
1508  struct GSF_PeerTransmitHandle *pth;
1509  struct GSF_DelayedHandle *dh;
1510 
1511  if (NULL == cp)
1512  return; /* must have been disconnect from core with
1513  * 'peer' == my_id, ignore */
1514  flush_respect (NULL,
1515  peer,
1516  cp);
1519  peer,
1520  cp));
1522  gettext_noop ("# peers connected"),
1524  GNUNET_NO);
1525  if (NULL != cp->respect_iterate_req)
1526  {
1528  cp->respect_iterate_req = NULL;
1529  }
1530  if (NULL != cp->rc)
1531  {
1533  cp->rc = NULL;
1534  }
1535  if (NULL != cp->rc_delay_task)
1536  {
1538  cp->rc_delay_task = NULL;
1539  }
1542  cp);
1544  cp->request_map = NULL;
1549  memset (cp->ppd.last_p2p_replies,
1550  0,
1551  sizeof(cp->ppd.last_p2p_replies));
1552  GSF_push_stop_ (cp);
1553  while (NULL != (pth = cp->pth_head))
1554  {
1556  cp->pth_tail,
1557  pth);
1558  if (GNUNET_YES == pth->is_query)
1559  GNUNET_assert (0 < cp->ppd.pending_queries--);
1560  else if (GNUNET_NO == pth->is_query)
1561  GNUNET_assert (0 < cp->ppd.pending_replies--);
1562  GNUNET_free (pth);
1563  }
1564  while (NULL != (dh = cp->delayed_head))
1565  {
1567  cp->delayed_tail,
1568  dh);
1569  GNUNET_MQ_discard (dh->env);
1570  cp->delay_queue_size--;
1572  GNUNET_free (dh);
1573  }
1574  GNUNET_PEER_change_rc (cp->ppd.pid, -1);
1575  if (NULL != cp->mig_revive_task)
1576  {
1578  cp->mig_revive_task = NULL;
1579  }
1580  GNUNET_break (0 == cp->ppd.pending_queries);
1581  GNUNET_break (0 == cp->ppd.pending_replies);
1582  GNUNET_free (cp);
1583 }
1584 
1585 
1590 {
1595 
1599  void *it_cls;
1600 };
1601 
1602 
1611 static int
1612 call_iterator (void *cls,
1613  const struct GNUNET_PeerIdentity *key,
1614  void *value)
1615 {
1616  struct IterationContext *ic = cls;
1617  struct GSF_ConnectedPeer *cp = value;
1618 
1619  ic->it (ic->it_cls,
1620  key, cp,
1621  &cp->ppd);
1622  return GNUNET_YES;
1623 }
1624 
1625 
1632 void
1634  void *it_cls)
1635 {
1636  struct IterationContext ic;
1637 
1638  ic.it = it;
1639  ic.it_cls = it_cls;
1641  &call_iterator,
1642  &ic);
1643 }
1644 
1645 
1652 void
1654  struct GNUNET_PeerIdentity *id)
1655 {
1656  GNUNET_assert (0 != cp->ppd.pid);
1657  GNUNET_PEER_resolve (cp->ppd.pid, id);
1658 }
1659 
1660 
1667 const struct GNUNET_PeerIdentity *
1669 {
1670  GNUNET_assert (0 != cp->ppd.pid);
1671  return GNUNET_PEER_resolve2 (cp->ppd.pid);
1672 }
1673 
1674 
1682 void
1684  struct GNUNET_TIME_Absolute block_time)
1685 {
1686  struct GNUNET_MQ_Envelope *env;
1687  struct MigrationStopMessage *msm;
1688 
1689  if (cp->last_migration_block.abs_value_us > block_time.abs_value_us)
1690  {
1692  "Migration already blocked for another %s\n",
1695  (cp->
1696  last_migration_block), GNUNET_YES));
1697  return; /* already blocked */
1698  }
1699  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Asking to stop migration for %s\n",
1702  GNUNET_YES));
1703  cp->last_migration_block = block_time;
1704  env = GNUNET_MQ_msg (msm,
1706  msm->reserved = htonl (0);
1707  msm->duration
1709  (cp->last_migration_block));
1711  gettext_noop ("# migration stop messages sent"),
1712  1,
1713  GNUNET_NO);
1714  GSF_peer_transmit_ (cp,
1715  GNUNET_SYSERR,
1716  UINT32_MAX,
1717  env);
1718 }
1719 
1720 
1730 void
1732  uint64_t pref)
1733 {
1734  cp->inc_preference += pref;
1735 }
1736 
1737 
1743 static void
1745 {
1746  fr_task = NULL;
1748  &flush_respect,
1749  NULL);
1753  NULL);
1754 }
1755 
1756 
1760 void
1762 {
1764  peerstore = GNUNET_PEERSTORE_connect (GSF_cfg);
1766  &cron_flush_respect, NULL);
1767 }
1768 
1769 
1773 void
1775 {
1777  &flush_respect,
1778  NULL);
1779  GNUNET_SCHEDULER_cancel (fr_task);
1780  fr_task = NULL;
1782  cp_map = NULL;
1783  GNUNET_PEERSTORE_disconnect (peerstore,
1784  GNUNET_YES);
1785 }
1786 
1787 
1796 static int
1798  const struct GNUNET_PeerIdentity *key,
1799  void *value)
1800 {
1801  const struct GSF_LocalClient *lc = cls;
1802  struct GSF_ConnectedPeer *cp = value;
1803  unsigned int i;
1804 
1805  for (i = 0; i < CS2P_SUCCESS_LIST_SIZE; i++)
1806  if (cp->ppd.last_client_replies[i] == lc)
1807  cp->ppd.last_client_replies[i] = NULL;
1808  return GNUNET_YES;
1809 }
1810 
1811 
1818 void
1820 {
1821  if (NULL == cp_map)
1822  return; /* already cleaned up */
1825  (void *) lc);
1826 }
1827 
1828 
1829 /* 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:245
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?
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:145
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:124
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:328
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
Information per peer and request.
struct GNUNET_TIME_AbsoluteNBO expiration
When does this result expire?
Definition: fs.h:343
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:1183
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:246
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:200
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.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
struct GSF_DelayedHandle * next
Kept in a doubly-linked list.
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
#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...
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:78
double GNUNET_LOAD_get_average(struct GNUNET_LOAD_Value *load)
Get the average value given to update so far.
Definition: load.c:215
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:75
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).
void GNUNET_PEER_resolve(GNUNET_PEER_Id id, struct GNUNET_PeerIdentity *pid)
Convert an interned PID to a normal peer identity.
Definition: peer.c:225
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:236
#define GNUNET_TIME_UNIT_FOREVER_ABS
Constant used to specify "forever".
#define _(String)
GNU gettext support macro.
Definition: platform.h:181
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:1253
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:1207
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...
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:140
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:1280
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:687
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:442
#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:641
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.
static char * expiration
Credential TTL.
Definition: gnunet-abd.c:96
uint32_t priority
Priority of this request.
#define GNUNET_TIME_UNIT_MILLISECONDS
One millisecond.
uint32_t type
Desired content type.
Definition: datastore.h:150
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:162
#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:76
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:625
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:338
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.
int GNUNET_CONTAINER_multihashmap_get_multiple(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, GNUNET_CONTAINER_MulitHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map that match a particular key.
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:375
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.
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:197
#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.
static void record(void *cls, size_t data_size, const void *data)
Process recorded audio data.
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:77
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:142
#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...
int GNUNET_CONTAINER_multihashmap_iterate(struct GNUNET_CONTAINER_MultiHashMap *map, GNUNET_CONTAINER_MulitHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map.
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:657
#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:966