GNUnet  0.10.x
plugin_ats2_simple.c
Go to the documentation of this file.
1 /*
2  This file is part of GNUnet.
3  Copyright (C) 2011-2015, 2018 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  */
29 #include "platform.h"
30 #include "gnunet_ats_plugin_new.h"
31 #include "gnunet_hello_lib.h"
33 
34 #define LOG(kind, ...) GNUNET_log_from(kind, "ats-simple", __VA_ARGS__)
35 
36 
44 #define SUGGEST_FREQ GNUNET_TIME_UNIT_SECONDS
45 
52 #define MIN_BANDWIDTH_PER_SESSION 1024
53 
54 
58 struct SimpleHandle;
59 
60 
65 struct Peer;
66 
67 
71 struct Hello {
75  struct Hello *next;
76 
80  struct Hello *prev;
81 
85  struct Peer *peer;
86 
90  const char *address;
91 
97 
102 
107 
112 
117 };
118 
119 
129 
134 
139 
144 
148  struct Hello *hello;
149 
153  struct Peer *peer;
154 
158  const char *address;
159 
164  struct GNUNET_TIME_Absolute last_allocation;
165 
170 
175 
179  uint64_t target_in;
180 
184  uint64_t target_out;
185 };
186 
187 
192 struct Peer {
197 
202 
206  struct Hello *h_head;
207 
211  struct Hello *h_tail;
212 
216  struct SimpleHandle *h;
217 
223 
228 
233 
237  struct GNUNET_TIME_Absolute last_suggestion;
238 
243  uint64_t bw_by_pk[GNUNET_MQ_PREFERENCE_COUNT];
244 };
245 
246 
250 struct Network {
254  unsigned long long total_quota_in;
255 
259  unsigned long long total_quota_out;
260 
265 };
266 
267 
271 struct SimpleHandle {
276 
281 
286 
292  uint64_t bw_by_pk[GNUNET_MQ_PREFERENCE_COUNT];
293 
297  struct Network networks[GNUNET_NT_COUNT];
298 };
299 
300 
308 struct Peer *
310 {
312 }
313 
314 
322 static int
324 {
326  pk++)
327  if (0 != p->bw_by_pk[pk])
328  return GNUNET_NO;
329  if (NULL != p->sh_head)
330  return GNUNET_NO;
331  return GNUNET_YES;
332 }
333 
334 
342 static void
344 {
345  struct Peer *p = hello->peer;
346  struct SimpleHandle *h = p->h;
347 
349  hello->backoff =
352  hello->expiration));
353  h->env->suggest_cb(h->env->cls, &p->pid, hello->address);
354 }
355 
356 
371 static void
373 {
374  struct Peer *p = cls;
376  struct Hello *hello = NULL;
378  struct GNUNET_TIME_Relative xdelay;
379  struct GNUNET_TIME_Absolute xnext;
380  unsigned int num_sessions = 0;
381  uint32_t sq;
382 
383  /* count number of active sessions */
384  for (struct GNUNET_ATS_SessionHandle *sh = p->sh_head; NULL != sh;
385  sh = sh->next)
386  num_sessions++;
387  /* calculate square of number of sessions */
388  num_sessions++; /* start with 1, even if we have zero sessions */
389  if (num_sessions < UINT16_MAX)
390  sq = num_sessions * (uint32_t)num_sessions;
391  else
392  sq = UINT32_MAX;
393  xdelay =
395  sq),
397  xnext = GNUNET_TIME_relative_to_absolute(xdelay);
398 
399  p->task = NULL;
400  while (0 == delay.rel_value_us)
401  {
402  struct Hello *next;
403  struct GNUNET_TIME_Absolute xmax;
404 
405  if (NULL != hello)
406  {
407  /* We went through the loop already once and found
408  a HELLO that is due *now*, so make a suggestion! */
409  GNUNET_break(NULL == hello->sh);
410  suggest_hello(hello);
411  hello = NULL;
413  }
414  for (struct Hello *pos = p->h_head; NULL != pos; pos = next)
415  {
416  struct GNUNET_TIME_Absolute pt;
417 
418  next = pos->next;
419  if (NULL != pos->sh)
420  continue;
421  if (0 ==
423  {
424  /* expired, remove! */
426  GNUNET_free(pos);
427  continue;
428  }
429  pt = GNUNET_TIME_absolute_add(pos->last_attempt, pos->backoff);
430  if ((NULL == hello) || (pt.abs_value_us < hpt.abs_value_us))
431  {
432  hello = pos;
433  hpt = pt;
434  }
435  }
436  if (NULL == hello)
437  return; /* no HELLOs that could still be tried */
438 
439  /* hpt is now the *earliest* possible time for any HELLO
440  but we might not want to go for as early as possible for
441  this peer. So the actual time is the max of the earliest
442  HELLO and the 'xnext' */
443  xmax = GNUNET_TIME_absolute_max(hpt, xnext);
445  }
447 }
448 
449 
457 static void
458 watch_cb(void *cls,
459  const struct GNUNET_PEERSTORE_Record *record,
460  const char *emsg)
461 {
462  struct Peer *p = cls;
463  char *addr;
464  size_t alen;
465  enum GNUNET_NetworkType nt;
466  struct GNUNET_TIME_Absolute expiration;
467  struct Hello *hello;
468 
469  if (0 != GNUNET_memcmp(&p->pid, &record->peer))
470  {
471  GNUNET_break(0);
472  return;
473  }
474  if (0 != strcmp(record->key, GNUNET_PEERSTORE_TRANSPORT_URLADDRESS_KEY))
475  {
476  GNUNET_break(0);
477  return;
478  }
479  addr = GNUNET_HELLO_extract_address(record->value,
480  record->value_size,
481  &p->pid,
482  &nt,
483  &expiration);
484  if (NULL == addr)
485  return; /* invalid hello, bad signature, other problem */
486  if (0 == GNUNET_TIME_absolute_get_remaining(expiration).rel_value_us)
487  {
488  /* expired, ignore */
489  GNUNET_free(addr);
490  return;
491  }
492  /* check if addr is already known */
493  for (struct Hello *he = p->h_head; NULL != he; he = he->next)
494  {
495  if (0 != strcmp(he->address, addr))
496  continue;
497  if (he->expiration.abs_value_us < expiration.abs_value_us)
498  {
499  he->expiration = expiration;
500  he->nt = nt;
501  }
502  GNUNET_free(addr);
503  return;
504  }
505  /* create new HELLO */
506  alen = strlen(addr) + 1;
507  hello = GNUNET_malloc(sizeof(struct Hello) + alen);
508  hello->address = (const char *)&hello[1];
509  hello->expiration = expiration;
510  hello->nt = nt;
511  hello->peer = p;
512  memcpy(&hello[1], addr, alen);
514  /* check if sh for this HELLO already exists */
515  for (struct GNUNET_ATS_SessionHandle *sh = p->sh_head; NULL != sh;
516  sh = sh->next)
517  {
518  if ((NULL == sh->address) || (0 != strcmp(sh->address, addr)))
519  continue;
520  GNUNET_assert(NULL == sh->hello);
521  sh->hello = hello;
522  hello->sh = sh;
523  break;
524  }
525  GNUNET_free(addr);
526  if (NULL == p->task)
528 }
529 
530 
538 static struct Peer *
540 {
541  struct Peer *p = lookup_peer(h, pid);
542 
543  if (NULL != p)
544  return p;
545  p = GNUNET_new(struct Peer);
546  p->h = h;
547  p->pid = *pid;
548  p->wc = GNUNET_PEERSTORE_watch(h->ps,
549  "transport",
550  &p->pid,
552  &watch_cb,
553  p);
556  h->peers,
557  &p->pid,
558  p,
560 
561  return p;
562 }
563 
564 
571 static void
572 peer_free(struct Peer *p)
573 {
574  struct SimpleHandle *h = p->h;
575  struct Hello *hello;
576 
577  GNUNET_assert(NULL == p->sh_head);
578  while (NULL != (hello = p->h_head))
579  {
581  GNUNET_assert(NULL == hello->sh);
582  GNUNET_free(hello);
583  }
584  if (NULL != p->task)
585  {
587  p->task = NULL;
588  }
589  if (NULL != p->wc)
590  {
592  p->wc = NULL;
593  }
596  GNUNET_free(p);
597 }
598 
599 
606 static void
608 {
609  struct Peer *peer = sh->peer;
610  struct SimpleHandle *h = peer->h;
611  enum GNUNET_NetworkType nt = sh->data->prop.nt;
612  struct GNUNET_TIME_Relative delay;
613  uint64_t sig_in;
614  uint64_t sig_out;
615  int64_t delta_in;
616  int64_t delta_out;
617 
619  /* A significant change is more than 10% of the quota,
620  which is given in bytes/second */
621  sig_in = h->networks[nt].total_quota_in * (delay.rel_value_us / 1000LL) /
622  1000LL / 10;
623  sig_out = h->networks[nt].total_quota_out * (delay.rel_value_us / 1000LL) /
624  1000LL / 10;
625  delta_in = ((int64_t)ntohl(sh->bw_in.value__)) - ((int64_t)sh->target_in);
626  delta_out = ((int64_t)ntohl(sh->bw_in.value__)) - ((int64_t)sh->target_in);
627  /* we want the absolute values */
628  if (delta_in < 0)
629  delta_in = -delta_in;
630  if (INT64_MIN == delta_in)
631  delta_in = INT64_MAX; /* Handle corner case: INT_MIN == - INT_MIN */
632  if (delta_out < 0)
633  delta_out = -delta_out;
634  if (INT64_MIN == delta_out)
635  delta_out = INT64_MAX; /* Handle corner case: INT_MIN == - INT_MIN */
636  if ((sig_in > delta_in) && (sig_out > delta_out))
637  return; /* insignificant change */
638  /* change is significant, tell transport! */
639  if (sh->target_in > UINT32_MAX)
640  sh->target_in = UINT32_MAX;
641  sh->bw_in.value__ = htonl((uint32_t)sh->target_in);
642  if (sh->target_out > UINT32_MAX)
643  sh->target_out = UINT32_MAX;
644  sh->bw_out.value__ = htonl((uint32_t)sh->target_out);
646  h->env->allocate_cb(h->env->cls,
647  sh->session,
648  &peer->pid,
649  sh->bw_in,
650  sh->bw_out);
651 }
652 
653 
657 struct Counters {
661  struct SimpleHandle *h;
662 
669  uint64_t bw_out_by_nt[GNUNET_NT_COUNT];
670 
675  uint64_t bw_in_by_nt[GNUNET_NT_COUNT];
676 
681  double scale_out[GNUNET_NT_COUNT];
682 
687  double scale_in[GNUNET_NT_COUNT];
688 };
689 
690 
700 static int
701 update_counters(void *cls, const struct GNUNET_PeerIdentity *pid, void *value)
702 {
703  struct Counters *c = cls;
704  struct Peer *peer = value;
706 
707  (void)pid;
708  if (NULL == peer->sh_head)
709  return GNUNET_YES; /* no available session, cannot allocate bandwidth */
710  memset(best, 0, sizeof(best));
711  for (struct GNUNET_ATS_SessionHandle *sh = peer->sh_head; NULL != sh;
712  sh = sh->next)
713  {
714  enum GNUNET_NetworkType nt = sh->data->prop.nt;
715 
718  c->bw_in_by_nt[nt] +=
721  pk++)
722  {
723  /* General rule: always prefer smaller distance if possible,
724  otherwise decide by pk: */
725  switch (pk)
726  {
728  break;
729 
731  /* For bandwidth, we compare the sum of transmitted bytes and
732  confirmed transmitted bytes, so confirmed data counts twice */
733  if ((NULL == best[pk]) ||
734  (sh->data->prop.distance < best[pk]->data->prop.distance) ||
736  best[pk]->data->prop.utilization_out +
737  best[pk]->data->prop.goodput_out))
738  best[pk] = sh;
739  /* If both are equal (i.e. usually this happens if there is a zero), use
740  latency as a yardstick */
742  best[pk]->data->prop.utilization_out +
743  best[pk]->data->prop.goodput_out) &&
744  (sh->data->prop.distance == best[pk]->data->prop.distance) &&
746  best[pk]->data->prop.delay.rel_value_us))
747  best[pk] = sh;
748  break;
749 
751  if ((NULL == best[pk]) ||
752  (sh->data->prop.distance < best[pk]->data->prop.distance) ||
753  ((sh->data->prop.distance == best[pk]->data->prop.distance) &&
755  best[pk]->data->prop.delay.rel_value_us)))
756  best[pk] = sh;
757  break;
758 
760  /* For reliability, we consider the ratio of goodput to utilization
761  (but use multiplicative formultations to avoid division by zero) */
762  if ((NULL == best[pk]) || (1ULL * sh->data->prop.goodput_out *
763  best[pk]->data->prop.utilization_out >
764  1ULL * sh->data->prop.utilization_out *
765  best[pk]->data->prop.goodput_out))
766  best[pk] = sh;
767  /* If both are equal (i.e. usually this happens if there is a zero), use
768  latency as a yardstick */
769  if ((1ULL * sh->data->prop.goodput_out *
770  best[pk]->data->prop.utilization_out ==
771  1ULL * sh->data->prop.utilization_out *
772  best[pk]->data->prop.goodput_out) &&
773  (sh->data->prop.distance == best[pk]->data->prop.distance) &&
775  best[pk]->data->prop.delay.rel_value_us))
776  best[pk] = sh;
777  break;
778  }
779  }
780  }
781  /* for first round, assign target bandwidth simply to sum of
782  requested bandwidth */
783  for (enum GNUNET_MQ_PreferenceKind pk =
784  1 /* skip GNUNET_MQ_PREFERENCE_NONE */;
786  pk++)
787  {
788  const struct GNUNET_ATS_SessionData *data = best[pk]->data;
789  enum GNUNET_NetworkType nt;
790 
791  GNUNET_assert(NULL != data);
792  nt = data->prop.nt;
793  best[pk]->target_out =
795  c->bw_out_by_nt[nt] +=
796  (uint64_t)(best[pk]->target_out - MIN_BANDWIDTH_PER_SESSION);
797  }
798  return GNUNET_YES;
799 }
800 
801 
811 static int
813  const struct GNUNET_PeerIdentity *pid,
814  void *value)
815 {
816  struct Counters *c = cls;
817  struct Peer *peer = value;
818 
819  (void)pid;
820  for (struct GNUNET_ATS_SessionHandle *sh = peer->sh_head; NULL != sh;
821  sh = sh->next)
822  {
823  enum GNUNET_NetworkType nt = sh->data->prop.nt;
824 
825  sh->target_out = (uint64_t)(c->scale_out[nt] * sh->target_out);
826  sh->target_in = (uint64_t)(c->scale_in[nt] * sh->target_in);
828  }
829  return GNUNET_YES;
830 }
831 
832 
836 static void
838 {
839  struct Counters cnt = { .h = h };
840 
842  /* calculate how badly the missmatch between requested
843  allocations and available bandwidth is per network type */
844  for (enum GNUNET_NetworkType nt = 0; nt < GNUNET_NT_COUNT; nt++)
845  {
846  cnt.scale_out[nt] =
847  1.0 * cnt.bw_out_by_nt[nt] / h->networks[nt].total_quota_out;
848  cnt.scale_in[nt] =
849  1.0 * cnt.bw_in_by_nt[nt] / h->networks[nt].total_quota_in;
850  }
851  /* recalculate allocations, considering scaling factor, and
852  update transport if the change is significant */
854 }
855 
856 
864 static struct GNUNET_ATS_PreferenceHandle *
865 simple_preference_add(void *cls, const struct GNUNET_ATS_Preference *pref)
866 {
867  struct SimpleHandle *h = cls;
868  struct Peer *p = peer_add(h, &pref->peer);
869 
871  p->bw_by_pk[pref->pk] += ntohl(pref->bw.value__);
872  h->bw_by_pk[pref->pk] += ntohl(pref->bw.value__);
873  update(h);
874  return NULL;
875 }
876 
877 
886 static void
888  struct GNUNET_ATS_PreferenceHandle *ph,
889  const struct GNUNET_ATS_Preference *pref)
890 {
891  struct SimpleHandle *h = cls;
892  struct Peer *p = lookup_peer(h, &pref->peer);
893 
894  GNUNET_assert(NULL != p);
896  p->bw_by_pk[pref->pk] -= ntohl(pref->bw.value__);
897  h->bw_by_pk[pref->pk] -= ntohl(pref->bw.value__);
898  if ((0 == p->bw_by_pk[pref->pk]) && (GNUNET_YES == peer_test_dead(p)))
899  peer_free(p);
900  update(h);
901 }
902 
903 
913 static struct GNUNET_ATS_SessionHandle *
915  const struct GNUNET_ATS_SessionData *data,
916  const char *address)
917 {
918  struct SimpleHandle *h = cls;
919  struct Peer *p = peer_add(h, &data->peer);
920  struct Hello *hello;
921  size_t alen;
923 
924  /* setup session handle */
925  GNUNET_assert(NULL != data);
926  if (NULL == address)
927  alen = 0;
928  else
929  alen = strlen(address) + 1;
930  sh = GNUNET_malloc(sizeof(struct GNUNET_ATS_SessionHandle) + alen);
931  sh->peer = p;
932  sh->session = data->session;
933  sh->data = data;
934  if (NULL == address)
935  {
936  sh->address = NULL;
937  }
938  else
939  {
940  memcpy(&sh[1], address, alen);
941  sh->address = (const char *)&sh[1];
942  }
944  if (NULL != address)
945  {
946  /* match HELLO */
947  hello = p->h_head;
948  while ((NULL != hello) && (0 != strcmp(address, hello->address)))
949  hello = hello->next;
950  if (NULL != hello)
951  {
952  hello->sh = sh;
954  sh->hello = hello;
955  }
956  }
957  update(h);
958  return sh;
959 }
960 
961 
970 static void
973  const struct GNUNET_ATS_SessionData *data)
974 {
975  struct SimpleHandle *h = cls;
976 
977  GNUNET_assert(NULL != data);
978  sh->data = data; /* this statement should not really do anything... */
979  update(h);
980 }
981 
982 
990 static void
993  const struct GNUNET_ATS_SessionData *data)
994 {
995  struct SimpleHandle *h = cls;
996  struct Peer *p = sh->peer;
997  struct Hello *hello = sh->hello;
998 
999  /* clean up sh */
1001  if (NULL != hello)
1002  {
1003  GNUNET_assert(sh == hello->sh);
1004  hello->sh = NULL;
1005  /* session went down, if necessary restart suggesting
1006  addresses */
1007  if (NULL == p->task)
1009  }
1010  GNUNET_free(sh);
1011  /* del peer if otherwise dead */
1012  if ((NULL == p->sh_head) && (GNUNET_YES == peer_test_dead(p)))
1013  peer_free(p);
1014  update(h);
1015 }
1016 
1017 
1018 #include "plugin_ats2_common.c"
1019 
1020 
1028 void *
1030 {
1031  static struct GNUNET_ATS_SolverFunctions sf;
1033  struct SimpleHandle *s;
1034 
1035  s = GNUNET_new(struct SimpleHandle);
1036  s->env = env;
1038  s->ps = GNUNET_PEERSTORE_connect(env->cfg);
1039  sf.cls = s;
1045  for (enum GNUNET_NetworkType nt = 0; nt < GNUNET_NT_COUNT; nt++)
1046  {
1047  const char *name = GNUNET_NT_to_string(nt);
1048 
1049  if (NULL == name)
1050  {
1051  GNUNET_break(0);
1052  break;
1053  }
1054  get_quota(env->cfg, name, "IN", &s->networks[nt].total_quota_in);
1055  get_quota(env->cfg, name, "OUT", &s->networks[nt].total_quota_out);
1056  s->networks[nt].type = nt;
1057  }
1058  return &sf;
1059 }
1060 
1061 
1067 void *
1069 {
1070  struct GNUNET_ATS_SolverFunctions *sf = cls;
1071  struct SimpleHandle *s = sf->cls;
1072 
1076  GNUNET_free(s);
1077  return NULL;
1078 }
1079 
1080 
1081 /* end of plugin_ats2_simple.c */
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
uint64_t bw_by_pk[GNUNET_MQ_PREFERENCE_COUNT]
Array where we sum up the bandwidth requests received indexed by preference kind (see enum GNUNET_MQ_...
void GNUNET_PEERSTORE_watch_cancel(struct GNUNET_PEERSTORE_WatchContext *wc)
Cancel a watch request.
enum GNUNET_NetworkType nt
Type of the network for this HELLO.
struct GNUNET_PEERSTORE_WatchContext * GNUNET_PEERSTORE_watch(struct GNUNET_PEERSTORE_Handle *h, const char *sub_system, const struct GNUNET_PeerIdentity *peer, const char *key, GNUNET_PEERSTORE_Processor callback, void *callback_cls)
Request watching a given key User will be notified with any new values added to key.
static struct GNUNET_CRYPTO_EddsaPrivateKey * pk
Private key of this peer.
uint64_t rel_value_us
The actual value.
const char * GNUNET_NT_to_string(enum GNUNET_NetworkType net)
Convert a enum GNUNET_NetworkType to a string.
Definition: nt.c:43
struct GNUNET_ATS_Session * session
Handle to the session that has the given properties.
double scale_in[GNUNET_NT_COUNT]
By how much do we have to scale (up or down) our expectations for inbound bandwidth?
unsigned long long total_quota_out
Total outbound quota.
const struct GNUNET_ATS_SessionData * data
Current performance data for this session.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
struct GNUNET_PeerIdentity peer
Peer Identity.
void(* session_update)(void *cls, struct GNUNET_ATS_SessionHandle *sh, const struct GNUNET_ATS_SessionData *data)
data changed for a given sh, solver should consider the updated performance characteristics.
static struct GNUNET_ATS_SessionHandle * simple_session_add(void *cls, const struct GNUNET_ATS_SessionData *data, const char *address)
Transport established a new session with performance characteristics given in data.
uint32_t goodput_out
Confirmed successful payload on this connection from this peer to the other peer. ...
static struct GNUNET_ATS_PreferenceHandle * simple_preference_add(void *cls, const struct GNUNET_ATS_Preference *pref)
The plugin should begin to respect a new preference.
static void suggest_hello(struct Hello *hello)
Contact the transport service and suggest to it to try connecting to the address of hello...
static void update(struct SimpleHandle *h)
The world changed, recalculate our allocations.
uint64_t target_in
New BW-in allocation given to the transport service.
void * libgnunet_plugin_ats2_simple_done(void *cls)
Function used to unload the plugin.
static struct Peer * peer_add(struct SimpleHandle *h, const struct GNUNET_PeerIdentity *pid)
Find or add peer if necessary.
enum GNUNET_MQ_PreferenceKind pk
What type of performance preference does the client have?
size_t value_size
Size of value BLOB.
Internal representation of a session by the plugin.
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
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static struct GNUNET_ATS_PerformanceHandle * ph
ATS performance handle used.
Definition: gnunet-ats.c:116
struct Hello * prev
Kept in a DLL.
struct GNUNET_TIME_Absolute last_suggestion
When did we last suggest an address to connect to for this peer?
struct GNUNET_TIME_Absolute last_attempt
When did we try it last?
static void simple_preference_del(void *cls, struct GNUNET_ATS_PreferenceHandle *ph, const struct GNUNET_ATS_Preference *pref)
The plugin should end respecting a preference.
static int update_counters(void *cls, const struct GNUNET_PeerIdentity *pid, void *value)
Function used to iterate over all peers and collect counter data.
No preference was expressed.
struct GNUNET_PeerIdentity peer
Peer the session is with.
static void watch_cb(void *cls, const struct GNUNET_PEERSTORE_Record *record, const char *emsg)
Function called by PEERSTORE for each matching record.
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
struct GNUNET_BANDWIDTH_Value32NBO bw_in
Last BW-in allocation given to the transport service.
void * libgnunet_plugin_ats2_simple_init(void *cls)
Function invoked when the plugin is loaded.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_add(struct GNUNET_TIME_Absolute start, struct GNUNET_TIME_Relative duration)
Add a given relative duration to the given start time.
Definition: time.c:393
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct Peer * peer
Peer this session is for.
uint64_t bw_by_pk[GNUNET_MQ_PREFERENCE_COUNT]
Array where we sum up the bandwidth requests received indexed by preference kind (see enum GNUNET_MQ_...
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).
uint64_t abs_value_us
The actual value.
#define SUGGEST_FREQ
Base frequency at which we suggest addresses to transport.
static void simple_session_update(void *cls, struct GNUNET_ATS_SessionHandle *sh, const struct GNUNET_ATS_SessionData *data)
data changed for a given sh, solver should consider the updated performance characteristics.
uint64_t bw_out_by_nt[GNUNET_NT_COUNT]
Bandwidth that applications would prefer to allocate in this network type.
GNUNET_NetworkType
Types of networks (with separate quotas) we support.
Definition: gnunet_nt_lib.h:35
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:94
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
#define GNUNET_TIME_UNIT_FOREVER_ABS
Constant used to specify "forever".
uint32_t value__
The actual value (bytes per second).
void(* session_del)(void *cls, struct GNUNET_ATS_SessionHandle *sh, const struct GNUNET_ATS_SessionData *data)
A session went away.
char * key
Record key string.
struct Hello * h_tail
Kept in a DLL.
double scale_out[GNUNET_NT_COUNT]
By how much do we have to scale (up or down) our expectations for outbound bandwidth?
struct GNUNET_ATS_PluginEnvironment * env
Our execution environment.
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:1237
struct GNUNET_PEERSTORE_Handle * ps
Handle to the peerstore service.
struct GNUNET_ATS_SessionHandle * sh_head
Kept in DLL per peer.
GNUNET_MQ_PreferenceKind
Enum defining all known preference categories.
static struct GNUNET_OS_Process * p
Helper process we started.
Definition: gnunet-qr.c:59
void * value
Record value BLOB.
static char * value
Value of the record to add/remove.
Information about ongoing sessions of the transport client.
void GNUNET_PEERSTORE_disconnect(struct GNUNET_PEERSTORE_Handle *h, int sync_first)
Disconnect from the PEERSTORE service.
struct GNUNET_ATS_PreferenceHandle *(* preference_add)(void *cls, const struct GNUNET_ATS_Preference *pref)
The plugin should begin to respect a new preference.
#define GNUNET_MQ_PREFERENCE_COUNT
#define GNUNET_MAX(a, b)
Definition: gnunet_common.h:82
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:1264
struct GNUNET_TIME_Absolute expiration
When does the HELLO expire?
#define GNUNET_MIN(a, b)
Definition: gnunet_common.h:80
struct SimpleHandle * h
The handle for the proportional solver.
uint64_t bw_in_by_nt[GNUNET_NT_COUNT]
Current bandwidth utilization for this network type.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_max(struct GNUNET_TIME_Absolute t1, struct GNUNET_TIME_Absolute t2)
Return the maximum of two absolute time values.
Definition: time.c:317
Representation of a network (to be expanded...)
struct GNUNET_TIME_Relative delay
Delay.
The preferred transmission for this envelope focuses on maximizing bandwidth.
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:440
Preference being expressed by an application client.
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
struct GNUNET_CONTAINER_MultiPeerMap * peers
Information we track for each peer.
Context for a watch request.
Internal representation of the hash map.
struct GNUNET_ATS_SessionHandle * sh_tail
Kept in DLL per peer.
Handle to the PEERSTORE service.
Definition: peerstore_api.c:40
struct Hello * h_head
Kept in a DLL.
static int peer_test_dead(struct Peer *p)
Check if there is any interesting information left we store about the peer in p.
struct GNUNET_BANDWIDTH_Value32NBO bw_out
Last BW-out allocation given to the transport service.
uint32_t goodput_in
Confirmed useful payload on this connection to this peer from the other peer.
struct GNUNET_ATS_SessionHandle *(* session_add)(void *cls, const struct GNUNET_ATS_SessionData *data, const char *address)
Transport established a new session with performance characteristics given in data.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
Entry in list of addresses we could try per peer.
uint64_t target_out
New BW-out allocation given to the transport service.
#define MIN_BANDWIDTH_PER_SESSION
What is the minimum bandwidth we always try to allocate for any session that is up? (May still be scaled down lower if the number of sessions is so high that the total bandwidth is insufficient to allow for this value to be granted.)
struct Peer * peer
Peer this hello belongs to.
enum GNUNET_NetworkType type
ATS network type.
ATS solver helper functions to be inlined.
static void get_quota(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *nts, const char *direction, unsigned long long *quota)
Parse cfg for quota as specified for direction of network type nts.
There must only be one value per key; storing a value should fail if a value under the same key alrea...
unsigned long long total_quota_in
Total inbound quota.
static void peer_free(struct Peer *p)
Free the entry (and associated tasks) of peer p.
struct Hello * hello
Hello matching this session, or NULL for none.
struct GNUNET_BANDWIDTH_Value32NBO bw
How much bandwidth in bytes/second does the application expect?
struct GNUNET_PEERSTORE_Handle * GNUNET_PEERSTORE_connect(const struct GNUNET_CONFIGURATION_Handle *cfg)
Connect to the PEERSTORE service.
const char * name
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
void * cls
Closure to pass to all solver functions in this struct.
Plugin-relevant information about a session.
struct GNUNET_PeerIdentity pid
Which peer is this for?
32-bit bandwidth used for network exchange by GNUnet, in bytes per second.
enum GNUNET_NetworkType nt
Which network scope does the respective address belong to?
#define GNUNET_TIME_UNIT_ZERO
Relative time zero.
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
struct GNUNET_SCHEDULER_Task * task
Task used to try again to suggest an address for this peer.
static void consider_notify_transport(struct GNUNET_ATS_SessionHandle *sh)
Check if the new allocation for sh is significantly different from the last one, and if so...
struct GNUNET_TIME_Absolute last_allocation
When did we last update transport about the allocation? Used to dampen the frequency of updates...
#define GNUNET_PEERSTORE_TRANSPORT_URLADDRESS_KEY
Key used for storing addresses in URL format in the peerstore.
void(* suggest_cb)(void *cls, const struct GNUNET_PeerIdentity *pid, const char *address)
Suggest to the transport that it should try establishing a connection using the given address...
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_ATS_SessionHandle * prev
Kept in DLL per 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.
static void simple_session_del(void *cls, struct GNUNET_ATS_SessionHandle *sh, const struct GNUNET_ATS_SessionData *data)
A session went away.
The identity of the host (wraps the signing key of the peer).
void(* allocate_cb)(void *cls, struct GNUNET_ATS_Session *session, const struct GNUNET_PeerIdentity *peer, struct GNUNET_BANDWIDTH_Value32NBO bw_in, struct GNUNET_BANDWIDTH_Value32NBO bw_out)
Tell the transport that it should allocate the given bandwidth to the specified session.
struct GNUNET_TIME_Relative backoff
Current exponential backoff value.
static int update_allocation(void *cls, const struct GNUNET_PeerIdentity *pid, void *value)
Function used to iterate over all peers and collect counter data.
Information about preferences and sessions we track per peer.
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
void(* preference_del)(void *cls, struct GNUNET_ATS_PreferenceHandle *ph, const struct GNUNET_ATS_Preference *pref)
The plugin should end respecting a preference.
struct Network networks[GNUNET_NT_COUNT]
Information we track per network type (quotas).
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.
static void suggest_start_cb(void *cls)
Consider suggesting a HELLO (without a session) to transport.
struct Hello * next
Kept in a DLL.
The preferred transmission for this envelope foces on minimizing latency.
Single PEERSTORE record.
const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration handle to be used by the solver.
Entry in list of pending tasks.
Definition: scheduler.c:131
Closure for update_counters and update_allocation.
struct Peer * lookup_peer(struct SimpleHandle *h, const struct GNUNET_PeerIdentity *pid)
Lookup peer in the peers map.
struct GNUNET_HELLO_Message * hello
Pointer to the HELLO message of this peer; can be NULL.
static void record(void *cls, size_t data_size, const void *data)
Process recorded audio data.
const char * address
The address we could try.
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
enum GNUNET_TESTBED_UnderlayLinkModelType type
the type of this model
void * cls
Closure to pass to all callbacks in this struct.
Time for absolute times used by GNUnet, in microseconds.
#define GNUNET_YES
Definition: gnunet_common.h:77
struct GNUNET_ATS_SessionHandle * sh
Is a session with this address already up? If not, set to NULL.
A handle for the proportional solver.
unsigned int GNUNET_CONTAINER_multipeermap_size(const struct GNUNET_CONTAINER_MultiPeerMap *map)
Get the number of key-value pairs in the map.
struct GNUNET_PeerIdentity peer
Peer to get address suggestions for.
static struct GNUNET_ATS_SolverFunctions * sf
Solver handle.
The ATS plugin will pass a pointer to a struct of this type as to the initialization function of the ...
static struct GNUNET_PeerIdentity pid
Identity of the peer we transmit to / connect to.
struct SimpleHandle * h
Plugin&#39;s state.
uint32_t data
The data value.
const char * address
Address used by this session (largely for debugging).
char * GNUNET_HELLO_extract_address(const void *raw, size_t raw_size, const struct GNUNET_PeerIdentity *pid, enum GNUNET_NetworkType *nt, struct GNUNET_TIME_Absolute *mono_time)
Check signature and extract address record.
Definition: hello-ng.c:107
unsigned int distance
Distance on network layer (required for distance-vector routing) in hops.
#define GNUNET_NT_COUNT
struct GNUNET_TIME_Relative GNUNET_TIME_randomized_backoff(struct GNUNET_TIME_Relative rt, struct GNUNET_TIME_Relative threshold)
Randomized exponential back-off, starting at 1 ms and going up by a factor of 2+r, where 0 <= r <= 0.5, up to a maximum of the given threshold.
Definition: time.c:758
#define GNUNET_malloc(size)
Wrapper around malloc.
#define GNUNET_free(ptr)
Wrapper around free.
Time for relative time used by GNUnet, in microseconds.
uint32_t utilization_out
Actual traffic on this connection from this peer to the other peer.
struct GNUNET_PEERSTORE_WatchContext * wc
Watch context where we are currently looking for HELLOs for this peer.
struct GNUNET_ATS_Session * session
The session in the main ATS service.
struct GNUNET_ATS_Properties prop
ATS performance characteristics for a session.
struct GNUNET_ATS_SessionHandle * next
Kept in DLL per peer.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
The preferred transmission for this envelope foces on reliability.