GNUnet  0.10.x
Data Structures | Macros | Typedefs | Functions
gnunet-service-fs_cp.h File Reference

API to handle 'connected peers'. More...

#include "fs.h"
#include "gnunet-service-fs.h"
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Data Structures

struct  GSF_PeerPerformanceData
 Performance data kept for a peer. More...
 

Macros

#define MAX_QUEUE_PER_PEER   24
 Maximum number of outgoing messages we queue per peer. More...
 
#define P2P_SUCCESS_LIST_SIZE   8
 Length of the P2P success tracker. More...
 
#define CS2P_SUCCESS_LIST_SIZE   8
 Length of the CS-2-P success tracker. More...
 

Typedefs

typedef 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. More...
 
typedef size_t(* GSF_GetMessageCallback) (void *cls, size_t buf_size, void *buf)
 Function called to get a message for transmission. More...
 
typedef void(* GSF_PeerReserveCallback) (void *cls, struct GSF_ConnectedPeer *cp, int success)
 Signature of function called on a reservation success or failure. More...
 

Functions

void * GSF_peer_connect_handler (void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_MQ_Handle *mq)
 A peer connected to us. More...
 
struct GSF_ConnectedPeerGSF_peer_get_ (const struct GNUNET_PeerIdentity *peer)
 Get a handle for a connected peer. More...
 
void GSF_update_peer_latency_ (const struct GNUNET_PeerIdentity *id, struct GNUNET_TIME_Relative latency)
 Update the latency information kept for the given peer. More...
 
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. More...
 
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. More...
 
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. More...
 
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. More...
 
void handle_p2p_migration_stop (void *cls, const struct MigrationStopMessage *message)
 Handle P2P GNUNET_MESSAGE_TYPE_FS_MIGRATION_STOP message. More...
 
void handle_p2p_get (void *cls, const struct GetMessage *gm)
 Handle P2P "QUERY" message. More...
 
struct GSF_PeerPerformanceDataGSF_get_peer_performance_data_ (struct GSF_ConnectedPeer *cp)
 Return the performance data record for the given peer. More...
 
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. More...
 
void GSF_peer_disconnect_handler (void *cls, const struct GNUNET_PeerIdentity *peer, void *internal_cls)
 A peer disconnected from us. More...
 
void GSF_handle_local_client_disconnect_ (const struct GSF_LocalClient *lc)
 Notification that a local client disconnected. More...
 
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). More...
 
void GSF_connected_peer_get_identity_ (const struct GSF_ConnectedPeer *cp, struct GNUNET_PeerIdentity *id)
 Obtain the identity of a connected peer. More...
 
const struct GNUNET_PeerIdentityGSF_connected_peer_get_identity2_ (const struct GSF_ConnectedPeer *cp)
 Obtain the identity of a connected peer. More...
 
void GSF_iterate_connected_peers_ (GSF_ConnectedPeerIterator it, void *it_cls)
 Iterate over all connected peers. More...
 
void GSF_connected_peer_init_ (void)
 Initialize peer management subsystem. More...
 
void GSF_connected_peer_done_ (void)
 Shutdown peer management subsystem. More...
 

Detailed Description

API to handle 'connected peers'.

Author
Christian Grothoff

Definition in file gnunet-service-fs_cp.h.

Macro Definition Documentation

◆ MAX_QUEUE_PER_PEER

#define MAX_QUEUE_PER_PEER   24

Maximum number of outgoing messages we queue per peer.

Performance measurements for 2 peer setup for 50 MB file (using perf_gnunet_service_fs_p2p):

24: 2-3 MB/s # ~ 24 MB RAM 256: 8 MB/s # ~256 MB RAM

Conclusion: 24 should suffice (reasonable performance, no excessive memory use).

Definition at line 45 of file gnunet-service-fs_cp.h.

Referenced by handle_p2p_get(), and peer_transmit().

◆ P2P_SUCCESS_LIST_SIZE

#define P2P_SUCCESS_LIST_SIZE   8

Length of the P2P success tracker.

Note that having a very long list can also hurt performance.

Definition at line 51 of file gnunet-service-fs_cp.h.

Referenced by GSF_peer_disconnect_handler(), and GSF_peer_update_responder_peer_().

◆ CS2P_SUCCESS_LIST_SIZE

#define CS2P_SUCCESS_LIST_SIZE   8

Length of the CS-2-P success tracker.

Note that having a very long list can also hurt performance.

Definition at line 57 of file gnunet-service-fs_cp.h.

Referenced by clean_local_client(), and GSF_peer_update_responder_client_().

Typedef Documentation

◆ GSF_ConnectedPeerIterator

typedef 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.

Parameters
clsclosure
peeridentity of the peer
cphandle to the connected peer record
perfpeer performance data

Definition at line 159 of file gnunet-service-fs_cp.h.

◆ GSF_GetMessageCallback

typedef size_t(* GSF_GetMessageCallback) (void *cls, size_t buf_size, void *buf)

Function called to get a message for transmission.

Parameters
clsclosure
buf_sizenumber of bytes available in buf
bufwhere to copy the message, NULL on error (peer disconnect)
Returns
number of bytes copied to buf, can be 0 (without indicating an error)

Definition at line 174 of file gnunet-service-fs_cp.h.

◆ GSF_PeerReserveCallback

typedef void(* GSF_PeerReserveCallback) (void *cls, struct GSF_ConnectedPeer *cp, int success)

Signature of function called on a reservation success or failure.

Parameters
clsclosure
cphandle to the connected peer record
successGNUNET_YES on success, GNUNET_NO on failure

Definition at line 187 of file gnunet-service-fs_cp.h.

Function Documentation

◆ GSF_peer_connect_handler()

void* GSF_peer_connect_handler ( void *  cls,
const struct GNUNET_PeerIdentity peer,
struct GNUNET_MQ_Handle mq 
)

A peer connected to us.

Setup the connected peer records.

Parameters
clsNULL
peeridentity of peer that connected
mqqueue for sending messages to peer
Returns
internal handle for the peer

Setup the connected peer records.

Parameters
clsNULL
peeridentity of peer that connected
mqmessage queue for talking to peer
Returns
our internal handle for the peer

Definition at line 584 of file gnunet-service-fs_cp.c.

References ats_reserve_callback(), consider_peer_for_forwarding(), GSF_PeerTransmitHandle::cp, DBLOCK_SIZE, gettext_noop, GNUNET_ATS_reserve_bandwidth(), GNUNET_break, GNUNET_CONTAINER_multihashmap_create(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY, GNUNET_CONTAINER_multipeermap_put(), GNUNET_CONTAINER_multipeermap_size(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_LOAD_value_init(), GNUNET_log, GNUNET_memcmp, GNUNET_new, GNUNET_NO, GNUNET_OK, GNUNET_PEER_intern(), GNUNET_PEERSTORE_iterate(), GNUNET_STATISTICS_set(), GNUNET_TIME_UNIT_ZERO, GNUNET_YES, GSF_ats, GSF_connected_peer_get_identity2_(), GSF_iterate_pending_requests_(), GSF_my_id, GSF_stats, mq, GSF_ConnectedPeer::mq, peer, GSF_PeerPerformanceData::peer, peer_respect_cb(), GSF_PeerPerformanceData::pid, GSF_ConnectedPeer::ppd, GSF_ConnectedPeer::rc, GSF_ConnectedPeer::request_map, GSF_ConnectedPeer::respect_iterate_req, and GSF_PeerPerformanceData::transmission_delay.

Referenced by main_init().

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);
620  "fs",
621  peer,
622  "respect",
624  cp);
626  cp);
627  return cp;
628 }
struct GNUNET_CONTAINER_MultiHashMap * request_map
Active requests from this neighbour, map of query to struct PeerRequest.
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.
struct GNUNET_LOAD_Value * GNUNET_LOAD_value_init(struct GNUNET_TIME_Relative autodecline)
Create a new load value.
Definition: load.c:125
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.
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's identity (pointer).
static struct GNUNET_CONTAINER_MultiPeerMap * cp_map
Map from peer identities to struct GSF_ConnectPeer entries.
struct GNUNET_ATS_PerformanceHandle * GSF_ats
Handle to ATS service.
struct GNUNET_STATISTICS_Handle * GSF_stats
Handle for reporting statistics.
#define GNUNET_NO
Definition: gnunet_common.h:81
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
#define GNUNET_new(type)
Allocate a struct or union of the given type.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
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.
struct GNUNET_ATS_ReservationContext * rc
Context of our GNUNET_ATS_reserve_bandwidth call (or NULL).
struct GSF_PeerPerformanceData ppd
Performance data for this peer.
struct GNUNET_PeerIdentity GSF_my_id
Identity of this peer.
static struct GNUNET_PEERSTORE_Handle * peerstore
Handle to peerstore service.
void GNUNET_STATISTICS_set(struct GNUNET_STATISTICS_Handle *handle, const char *name, uint64_t value, int make_persistent)
Set statistic value for the peer.
#define DBLOCK_SIZE
Size of the individual blocks used for file-sharing.
Definition: fs.h:40
There must only be one value per key; storing a value should fail if a value under the same key alrea...
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.
void GSF_iterate_pending_requests_(GSF_PendingRequestIterator it, void *cls)
Iterate over all pending requests.
static void peer_respect_cb(void *cls, const struct GNUNET_PEERSTORE_Record *record, const char *emsg)
Function called by PEERSTORE with peer respect record.
GNUNET_PEER_Id pid
The peer's identity (interned version).
#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.
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.
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...
const struct GNUNET_PeerIdentity * GSF_connected_peer_get_identity2_(const struct GSF_ConnectedPeer *cp)
Obtain the identity of a connected peer.
struct GNUNET_MQ_Handle * mq
Handle for an active request for transmission to this peer.
struct GNUNET_PEERSTORE_IterateContext * respect_iterate_req
Handle to the PEERSTORE iterate request for peer respect value.
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
#define GNUNET_log(kind,...)
A connected peer.
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
#define GNUNET_YES
Definition: gnunet_common.h:80
unsigned int GNUNET_CONTAINER_multipeermap_size(const struct GNUNET_CONTAINER_MultiPeerMap *map)
Get the number of key-value pairs in the map.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
GNUNET_PEER_Id GNUNET_PEER_intern(const struct GNUNET_PeerIdentity *pid)
Intern an peer identity.
Definition: peer.c:107
#define gettext_noop(String)
Definition: gettext.h:69
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◆ GSF_peer_get_()

struct GSF_ConnectedPeer* GSF_peer_get_ ( const struct GNUNET_PeerIdentity peer)

Get a handle for a connected peer.

Parameters
peerpeer's identity
Returns
NULL if this peer is not currently connected
Parameters
peerpeer's identity
Returns
NULL if the peer is not currently connected

Definition at line 663 of file gnunet-service-fs_cp.c.

References GNUNET_CONTAINER_multipeermap_get().

Referenced by GSF_update_peer_latency_(), handle_p2p_get(), and put_migration_continuation().

664 {
665  if (NULL == cp_map)
666  return NULL;
668 }
static struct GNUNET_CONTAINER_MultiPeerMap * cp_map
Map from peer identities to struct GSF_ConnectPeer entries.
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.
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◆ GSF_update_peer_latency_()

void GSF_update_peer_latency_ ( const struct GNUNET_PeerIdentity id,
struct GNUNET_TIME_Relative  latency 
)

Update the latency information kept for the given peer.

Parameters
idpeer record to update
latencycurrent latency value

Definition at line 308 of file gnunet-service-fs_cp.c.

References GSF_PeerTransmitHandle::cp, GNUNET_LOAD_value_set_decline(), GSF_peer_get_(), GSF_ConnectedPeer::ppd, and GSF_PeerPerformanceData::transmission_delay.

Referenced by update_latencies().

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 }
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...
struct GSF_PeerPerformanceData ppd
Performance data for this peer.
struct GSF_ConnectedPeer * GSF_peer_get_(const struct GNUNET_PeerIdentity *peer)
Get a handle for a connected peer.
A connected peer.
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
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◆ GSF_peer_transmit_()

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.

If the peer disconnects before the transmission can happen, the callback is invoked with a 'NULL' buffer.

Parameters
cptarget peer
is_queryis this a query (GNUNET_YES) or content (GNUNET_NO)
priorityhow important is this request?
envenvelope of message to send

If the peer disconnects before the transmission can happen, the callback is invoked with a NULL buffer.

Parameters
cptarget peer
is_queryis this a query (GNUNET_YES) or content (GNUNET_NO) or neither (GNUNET_SYSERR)
priorityhow important is this request?
timeoutwhen does this request timeout
sizenumber of bytes we would like to send to the peer
envmessage to send

Definition at line 1367 of file gnunet-service-fs_cp.c.

References GSF_PeerTransmitHandle::cp, GSF_PeerTransmitHandle::env, GNUNET_CONTAINER_DLL_insert_after, GNUNET_new, GNUNET_NO, GNUNET_TIME_absolute_get(), GNUNET_YES, GSF_PeerTransmitHandle::is_query, GSF_PeerTransmitHandle::next, GSF_PeerPerformanceData::pending_queries, GSF_PeerPerformanceData::pending_replies, GSF_ConnectedPeer::ppd, GSF_PeerTransmitHandle::prev, GSF_PeerTransmitHandle::priority, GSF_ConnectedPeer::pth_head, GSF_ConnectedPeer::pth_tail, schedule_transmission(), and GSF_PeerTransmitHandle::transmission_request_start_time.

Referenced by GSF_block_peer_migration_(), handle_p2p_reply(), schedule_peer_transmission(), transmit_content(), and transmit_delayed_now().

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 }
unsigned int pending_queries
Number of pending queries (replies are not counted)
int is_query
GNUNET_YES if this is a query, GNUNET_NO for content.
struct GSF_PeerTransmitHandle * next
Kept in a doubly-linked list.
#define GNUNET_NO
Definition: gnunet_common.h:81
struct GSF_PeerTransmitHandle * pth_head
Messages (replies, queries, content migration) we would like to send to this peer in the near future...
struct GSF_ConnectedPeer * cp
Peer this request targets.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
unsigned int pending_replies
Number of pending replies (queries are not counted)
static void schedule_transmission(struct GSF_PeerTransmitHandle *pth)
If ready (bandwidth reserved), try to schedule transmission via core for the given handle...
struct GSF_PeerPerformanceData ppd
Performance data for this peer.
#define GNUNET_CONTAINER_DLL_insert_after(head, tail, other, element)
Insert an element into a DLL after the given other element.
uint32_t priority
Priority of this request.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
struct GNUNET_MQ_Envelope * env
Envelope with the actual message.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
struct GSF_PeerTransmitHandle * prev
Kept in a doubly-linked list.
struct GSF_PeerTransmitHandle * pth_tail
Messages (replies, queries, content migration) we would like to send to this peer in the near future...
#define GNUNET_YES
Definition: gnunet_common.h:80
struct GNUNET_TIME_Absolute transmission_request_start_time
Time when this transmission request was issued.
Handle to cancel a transmission request.
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◆ GSF_peer_update_performance_()

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.

Parameters
cpresponding peer (will be updated)
request_timetime at which the original query was transmitted
request_prioritypriority of the original request

Definition at line 1410 of file gnunet-service-fs_cp.c.

References GSF_PeerPerformanceData::avg_priority, GSF_PeerPerformanceData::avg_reply_delay, GNUNET_TIME_absolute_get_duration(), GSF_ConnectedPeer::ppd, GNUNET_TIME_Relative::rel_value_us, and RUNAVG_DELAY_N.

Referenced by update_request_performance_data().

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 }
uint64_t rel_value_us
The actual value.
#define RUNAVG_DELAY_N
Ratio for moving average delay calculation.
double avg_priority
Average priority of successful replies.
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 GSF_PeerPerformanceData ppd
Performance data for this peer.
static struct GNUNET_TIME_Relative delay
When should dkg communication start?
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
Time for relative time used by GNUnet, in microseconds.
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◆ GSF_peer_update_responder_client_()

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.

Remember that this peer is good for this client.

Parameters
cpresponding peer (will be updated)
initiator_clientlocal client on responsible for query

Definition at line 1434 of file gnunet-service-fs_cp.c.

References CS2P_SUCCESS_LIST_SIZE, GSF_PeerPerformanceData::last_client_replies, GSF_ConnectedPeer::last_client_replies_woff, and GSF_ConnectedPeer::ppd.

1436 {
1438  CS2P_SUCCESS_LIST_SIZE] = initiator_client;
1439 }
#define CS2P_SUCCESS_LIST_SIZE
Length of the CS-2-P success tracker.
unsigned int last_client_replies_woff
Which offset in last_client_replies will be updated next? (we go round-robin).
struct GSF_PeerPerformanceData ppd
Performance data for this peer.
struct GSF_LocalClient * last_client_replies[8]
List of the last clients for which this peer successfully answered a query.

◆ GSF_peer_update_responder_peer_()

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.

Remember that this peer is good for this initiating peer.

Parameters
cpresponding peer (will be updated)
initiator_peerother peer responsible for query

Definition at line 1450 of file gnunet-service-fs_cp.c.

References GNUNET_PEER_change_rc(), GSF_PeerPerformanceData::last_p2p_replies, GSF_ConnectedPeer::last_p2p_replies_woff, P2P_SUCCESS_LIST_SIZE, GSF_PeerPerformanceData::pid, and GSF_ConnectedPeer::ppd.

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 }
#define P2P_SUCCESS_LIST_SIZE
Length of the P2P success tracker.
unsigned int last_p2p_replies_woff
Which offset in last_p2p_replies will be updated next? (we go round-robin).
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...
struct GSF_PeerPerformanceData ppd
Performance data for this peer.
GNUNET_PEER_Id pid
The peer's identity (interned version).
void GNUNET_PEER_change_rc(GNUNET_PEER_Id id, int delta)
Change the reference counter of an interned PID.
Definition: peer.c:198
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◆ handle_p2p_migration_stop()

void handle_p2p_migration_stop ( void *  cls,
const struct MigrationStopMessage msm 
)

Handle P2P GNUNET_MESSAGE_TYPE_FS_MIGRATION_STOP message.

Parameters
clsclosure, the struct GSF_ConnectedPeer
msmthe actual message

Definition at line 678 of file gnunet-service-fs_cp.c.

References _, MigrationStopMessage::duration, gettext_noop, GNUNET_ERROR_TYPE_INFO, GNUNET_i2s(), GNUNET_log, GNUNET_NO, GNUNET_SCHEDULER_add_delayed(), GNUNET_STATISTICS_update(), GNUNET_STRINGS_relative_time_to_string(), GNUNET_TIME_relative_ntoh(), GNUNET_TIME_relative_to_absolute(), GNUNET_YES, GSF_push_stop_(), GSF_stats, GSF_ConnectedPeer::mig_revive_task, GSF_PeerPerformanceData::migration_blocked_until, GSF_PeerPerformanceData::peer, GSF_ConnectedPeer::ppd, GSF_ConnectedPeer::respect_iterate_req, and revive_migration().

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 }
void GSF_push_stop_(struct GSF_ConnectedPeer *peer)
A peer disconnected from us.
const struct GNUNET_PeerIdentity * peer
The peer's identity (pointer).
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
struct GNUNET_STATISTICS_Handle * GSF_stats
Handle for reporting statistics.
#define GNUNET_NO
Definition: gnunet_common.h:81
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
#define _(String)
GNU gettext support macro.
Definition: platform.h:208
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
struct GSF_PeerPerformanceData ppd
Performance data for this 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.
struct GNUNET_TIME_Relative GNUNET_TIME_relative_ntoh(struct GNUNET_TIME_RelativeNBO a)
Convert relative time from network byte order.
Definition: time.c:638
struct GNUNET_TIME_RelativeNBO duration
How long should the block last?
struct GNUNET_SCHEDULER_Task * mig_revive_task
Task scheduled to revive migration to this peer.
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_PEERSTORE_IterateContext * respect_iterate_req
Handle to the PEERSTORE iterate request for peer respect value.
#define GNUNET_log(kind,...)
A connected peer.
#define GNUNET_YES
Definition: gnunet_common.h:80
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
Time for relative time used by GNUnet, in microseconds.
#define gettext_noop(String)
Definition: gettext.h:69
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◆ handle_p2p_get()

void handle_p2p_get ( void *  cls,
const struct GetMessage gm 
)

Handle P2P "QUERY" message.

Parameters
clsthe struct GSF_ConnectedPeer of the other sender
gmthe actual message

Creates the pending request entry and sets up all of the data structures to that we will process replies properly. Does not initiate forwarding or local database lookups.

Parameters
clsthe other peer involved (sender of the message)
gmthe GET message

Definition at line 1171 of file gnunet-service-fs_cp.c.

References bound_priority(), bound_ttl(), GSF_PeerTransmitHandle::cp, PeerRequest::cp, GSF_ConnectedPeer::delay_queue_size, GetMessage::filter_mutator, TestExistClosure::finished, GET_MESSAGE_BIT_RETURN_TO, GET_MESSAGE_BIT_TRANSMIT_TO, gettext_noop, GNUNET_assert, GNUNET_break, GNUNET_CONSTANTS_MAX_CORK_DELAY, GNUNET_CONTAINER_multihashmap_get_multiple(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE, GNUNET_CRYPTO_QUALITY_WEAK, GNUNET_CRYPTO_random_u32(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_h2s(), GNUNET_i2s(), GNUNET_LOAD_get_average(), GNUNET_LOAD_get_load(), GNUNET_log, GNUNET_MQ_get_length(), GNUNET_new, GNUNET_NO, GNUNET_OK, GNUNET_PEER_intern(), GNUNET_STATISTICS_update(), GNUNET_YES, GSF_consider_forwarding(), GSF_cover_query_count, GSF_local_lookup_(), GSF_peer_get_(), GSF_pending_request_create_(), GSF_pending_request_get_data_(), GSF_PRO_DEFAULTS, GSF_PRO_FORWARD_ONLY, GSF_rt_entry_lifetime, GSF_stats, handle_p2p_reply(), GSF_PendingRequestData::has_started, GetMessage::hash_bitmap, GetMessage::header, MAX_QUEUE_PER_PEER, GSF_ConnectedPeer::mq, options, GSF_PeerPerformanceData::peer, GSF_PeerPerformanceData::pending_replies, GSF_ConnectedPeer::ppd, PeerRequest::pr, GetMessage::priority, TestExistClosure::priority, GetMessage::query, GSF_PendingRequestData::query, GSF_ConnectedPeer::request_map, GNUNET_MessageHeader::size, test_exist_cb(), GSF_PeerPerformanceData::transmission_delay, GetMessage::ttl, TestExistClosure::ttl, TTL_DECREMENT, GetMessage::type, and TestExistClosure::type.

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 }
struct GNUNET_CONTAINER_MultiHashMap * request_map
Active requests from this neighbour, map of query to struct PeerRequest.
struct GNUNET_MessageHeader header
Type is GNUNET_MESSAGE_TYPE_DATASTORE_GET.
Definition: datastore.h:148
static int32_t bound_priority(uint32_t prio_in, struct GSF_ConnectedPeer *cp)
We&#39;ve received a request with the specified priority.
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
Information per peer and request.
#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)
uint32_t priority
How important is this request (network byte order)
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).
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).
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
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.
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.
#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
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
static int test_exist_cb(void *cls, const struct GNUNET_HashCode *hc, void *value)
Test if the query already exists.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
#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 ...
struct GNUNET_HashCode query
Primary query hash for this request.
Public data (in the sense of not encapsulated within &#39;gnunet-service-fs_pr&#39;, not in the sense of netw...
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...
unsigned int pending_replies
Number of pending replies (queries are not counted)
Message to the datastore service asking about specific content.
Definition: datastore.h:143
unsigned int GNUNET_MQ_get_length(struct GNUNET_MQ_Handle *mq)
Obtain the current length of the message queue.
Definition: mq.c:335
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 GSF_PeerPerformanceData ppd
Performance data for this peer.
struct GNUNET_HashCode query
Hashcodes of the file(s) we&#39;re looking for.
struct GSF_ConnectedPeer * GSF_peer_get_(const struct GNUNET_PeerIdentity *peer)
Get a handle for a connected 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...
void GSF_local_lookup_(struct GSF_PendingRequest *pr, GSF_LocalLookupContinuation cont, void *cont_cls)
Look up the request in the local datastore.
Closure for test_exist_cb().
uint32_t type
Desired content type.
Definition: datastore.h:153
struct GSF_ConnectedPeer * cp
Which specific peer issued this request?
unsigned int delay_queue_size
Number of entries in delayed_head DLL.
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.
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.
Allow multiple values with the same key.
The identity of the host (wraps the signing key of the peer).
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.
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.
Request must only be forwarded (no routing)
struct GNUNET_MQ_Handle * mq
Handle for an active request for transmission to this peer.
#define GNUNET_log(kind,...)
#define TTL_DECREMENT
By which amount do we decrement the TTL for simple forwarding / indirection of the query; in milli-se...
A connected peer.
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.
#define GNUNET_YES
Definition: gnunet_common.h:80
#define MAX_QUEUE_PER_PEER
Maximum number of outgoing messages we queue per peer.
An active request.
#define GNUNET_CONSTANTS_MAX_CORK_DELAY
How long do we delay messages to get larger packet sizes (CORKing)?
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).
GNUNET_PEER_Id GNUNET_PEER_intern(const struct GNUNET_PeerIdentity *pid)
Intern an peer identity.
Definition: peer.c:107
#define gettext_noop(String)
Definition: gettext.h:69
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◆ GSF_get_peer_performance_data_()

struct GSF_PeerPerformanceData* GSF_get_peer_performance_data_ ( struct GSF_ConnectedPeer cp)

Return the performance data record for the given peer.

Parameters
cppeer to query
Returns
performance data record for the peer

Definition at line 328 of file gnunet-service-fs_cp.c.

References ats_reserve_callback(), GSF_PeerTransmitHandle::cp, peer, peer_transmit(), and GSF_ConnectedPeer::ppd.

Referenced by handle_p2p_put(), put_migration_continuation(), score_content(), and transmit_content().

329 {
330  return &cp->ppd;
331 }
struct GSF_PeerPerformanceData ppd
Performance data for this peer.
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◆ GSF_block_peer_migration_()

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.

Parameters
cppeer to ask
block_timeuntil when to block

Definition at line 1682 of file gnunet-service-fs_cp.c.

References GNUNET_TIME_Absolute::abs_value_us, MigrationStopMessage::duration, GSF_PeerTransmitHandle::env, gettext_noop, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_MESSAGE_TYPE_FS_MIGRATION_STOP, GNUNET_MQ_msg, GNUNET_NO, GNUNET_STATISTICS_update(), GNUNET_STRINGS_relative_time_to_string(), GNUNET_SYSERR, GNUNET_TIME_absolute_get_remaining(), GNUNET_TIME_relative_hton(), GNUNET_YES, GSF_peer_transmit_(), GSF_stats, GSF_ConnectedPeer::last_migration_block, and MigrationStopMessage::reserved.

Referenced by handle_p2p_put(), and put_migration_continuation().

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 }
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.
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
struct GNUNET_STATISTICS_Handle * GSF_stats
Handle for reporting statistics.
#define GNUNET_NO
Definition: gnunet_common.h:81
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.
uint64_t abs_value_us
The actual value.
uint32_t reserved
Always zero.
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
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
struct GNUNET_TIME_RelativeNBO GNUNET_TIME_relative_hton(struct GNUNET_TIME_Relative a)
Convert relative time to network byte order.
Definition: time.c:622
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
Message send by a peer that wants to be excluded from migration for a while.
struct GNUNET_TIME_RelativeNBO duration
How long should the block last?
#define GNUNET_MESSAGE_TYPE_FS_MIGRATION_STOP
Peer asks us to stop migrating content towards it for a while.
#define GNUNET_log(kind,...)
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
#define GNUNET_YES
Definition: gnunet_common.h:80
#define gettext_noop(String)
Definition: gettext.h:69
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◆ GSF_peer_disconnect_handler()

void GSF_peer_disconnect_handler ( void *  cls,
const struct GNUNET_PeerIdentity peer,
void *  internal_cls 
)

A peer disconnected from us.

Tear down the connected peer record.

Parameters
clsunused
peeridentity of peer that connected
internal_clsour struct GSF_ConnectedPeer for peer

Tear down the connected peer record.

Parameters
clsunused
peeridentity of peer that disconnected
internal_clsthe corresponding struct GSF_ConnectedPeer

Definition at line 1502 of file gnunet-service-fs_cp.c.

References cancel_pending_request(), GSF_ConnectedPeer::delay_queue_size, GSF_DelayedHandle::delay_task, GSF_ConnectedPeer::delayed_head, GSF_ConnectedPeer::delayed_tail, GSF_DelayedHandle::env, flush_respect(), gettext_noop, GNUNET_assert, GNUNET_ATS_reserve_bandwidth_cancel(), GNUNET_break, GNUNET_CONTAINER_DLL_remove, GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_CONTAINER_multipeermap_remove(), GNUNET_CONTAINER_multipeermap_size(), GNUNET_free, GNUNET_LOAD_value_free, GNUNET_MQ_discard(), GNUNET_NO, GNUNET_PEER_change_rc(), GNUNET_PEER_decrement_rcs(), GNUNET_PEERSTORE_iterate_cancel(), GNUNET_SCHEDULER_cancel(), GNUNET_STATISTICS_set(), GNUNET_YES, GSF_plan_notify_peer_disconnect_(), GSF_push_stop_(), GSF_stats, GSF_PeerTransmitHandle::is_query, GSF_PeerPerformanceData::last_p2p_replies, GSF_ConnectedPeer::mig_revive_task, P2P_SUCCESS_LIST_SIZE, GSF_PeerPerformanceData::pending_queries, GSF_PeerPerformanceData::pending_replies, GSF_PeerPerformanceData::pid, GSF_ConnectedPeer::ppd, GSF_ConnectedPeer::pth_head, GSF_ConnectedPeer::pth_tail, GSF_ConnectedPeer::rc, GSF_ConnectedPeer::rc_delay_task, GSF_ConnectedPeer::request_map, GSF_ConnectedPeer::respect_iterate_req, and GSF_PeerPerformanceData::transmission_delay.

Referenced by main_init().

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 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
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)
#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.
void GSF_push_stop_(struct GSF_ConnectedPeer *peer)
A peer disconnected from us.
static int cancel_pending_request(void *cls, const struct GNUNET_HashCode *query, void *value)
Cancel all requests associated with the peer.
Handle for an entry in our delay list.
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...
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static struct GNUNET_CONTAINER_MultiPeerMap * cp_map
Map from peer identities to struct GSF_ConnectPeer entries.
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
struct GSF_PeerTransmitHandle * pth_head
Messages (replies, queries, content migration) we would like to send to this peer in the near future...
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...
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
struct GSF_DelayedHandle * delayed_head
Messages (replies, queries, content migration) we would like to send to this peer in the near future...
unsigned int pending_replies
Number of pending replies (queries are not counted)
struct GNUNET_ATS_ReservationContext * rc
Context of our GNUNET_ATS_reserve_bandwidth call (or NULL).
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...
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
struct GSF_PeerPerformanceData ppd
Performance data for this peer.
void GNUNET_STATISTICS_set(struct GNUNET_STATISTICS_Handle *handle, const char *name, uint64_t value, int make_persistent)
Set statistic value for the peer.
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
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.
unsigned int delay_queue_size
Number of entries in delayed_head DLL.
GNUNET_PEER_Id pid
The peer&#39;s identity (interned version).
struct GNUNET_SCHEDULER_Task * mig_revive_task
Task scheduled to revive migration to this peer.
void GNUNET_ATS_reserve_bandwidth_cancel(struct GNUNET_ATS_ReservationContext *rc)
Cancel request for reserving bandwidth.
struct GSF_PeerTransmitHandle * pth_tail
Messages (replies, queries, content migration) we would like to send to this peer in the near future...
#define GNUNET_LOAD_value_free(lv)
Free a load value.
struct GNUNET_PEERSTORE_IterateContext * respect_iterate_req
Handle to the PEERSTORE iterate request for peer respect value.
void GNUNET_PEER_change_rc(GNUNET_PEER_Id id, int delta)
Change the reference counter of an interned PID.
Definition: peer.c:198
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.
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...
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_MQ_Envelope * env
Envelope of the message that was delayed.
#define GNUNET_YES
Definition: gnunet_common.h:80
unsigned int GNUNET_CONTAINER_multipeermap_size(const struct GNUNET_CONTAINER_MultiPeerMap *map)
Get the number of key-value pairs in the map.
int GNUNET_CONTAINER_multihashmap_iterate(struct GNUNET_CONTAINER_MultiHashMap *map, GNUNET_CONTAINER_MulitHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map.
#define GNUNET_free(ptr)
Wrapper around free.
#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
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◆ GSF_handle_local_client_disconnect_()

void GSF_handle_local_client_disconnect_ ( const struct GSF_LocalClient lc)

Notification that a local client disconnected.

Clean up all of our references to the given handle.

Parameters
lchandle to the local client (henceforth invalid)

Definition at line 1815 of file gnunet-service-fs_cp.c.

References clean_local_client(), and GNUNET_CONTAINER_multipeermap_iterate().

1816 {
1817  if (NULL == cp_map)
1818  return; /* already cleaned up */
1821  (void *) lc);
1822 }
static struct GNUNET_CONTAINER_MultiPeerMap * cp_map
Map from peer identities to struct GSF_ConnectPeer entries.
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 int clean_local_client(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Iterator to remove references to LC entry.
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◆ GSF_connected_peer_change_preference_()

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).

The change will be communicated the next time we reserve bandwidth with core (not instantly).

Parameters
cppeer to reserve bandwidth from
prefpreference change

Definition at line 1727 of file gnunet-service-fs_cp.c.

References GSF_ConnectedPeer::inc_preference.

Referenced by handle_p2p_put().

1729 {
1730  cp->inc_preference += pref;
1731 }
uint64_t inc_preference
Increase in traffic preference still to be submitted to the core service for this peer...
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◆ GSF_connected_peer_get_identity_()

void GSF_connected_peer_get_identity_ ( const struct GSF_ConnectedPeer cp,
struct GNUNET_PeerIdentity id 
)

Obtain the identity of a connected peer.

Parameters
cppeer to get identity of
ididentity to set (written to)

Definition at line 1652 of file gnunet-service-fs_cp.c.

References GNUNET_assert, GNUNET_PEER_resolve(), GSF_PeerPerformanceData::pid, and GSF_ConnectedPeer::ppd.

Referenced by consider_peer_for_forwarding().

1654 {
1655  GNUNET_assert (0 != cp->ppd.pid);
1656  GNUNET_PEER_resolve (cp->ppd.pid, id);
1657 }
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
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
struct GSF_PeerPerformanceData ppd
Performance data for this peer.
GNUNET_PEER_Id pid
The peer&#39;s identity (interned version).
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◆ GSF_connected_peer_get_identity2_()

const struct GNUNET_PeerIdentity* GSF_connected_peer_get_identity2_ ( const struct GSF_ConnectedPeer cp)

Obtain the identity of a connected peer.

Parameters
cppeer to get identity of
Returns
reference to peer identity, valid until peer disconnects (!)

Definition at line 1667 of file gnunet-service-fs_cp.c.

References GNUNET_assert, GNUNET_PEER_resolve2(), GSF_PeerPerformanceData::pid, and GSF_ConnectedPeer::ppd.

Referenced by GSF_peer_connect_handler(), GSF_plan_add_(), GSF_plan_notify_peer_disconnect_(), GSF_push_start_(), and process_migration_content().

1668 {
1669  GNUNET_assert (0 != cp->ppd.pid);
1670  return GNUNET_PEER_resolve2 (cp->ppd.pid);
1671 }
const struct GNUNET_PeerIdentity * GNUNET_PEER_resolve2(GNUNET_PEER_Id id)
Convert an interned PID to a normal peer identity.
Definition: peer.c:246
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GSF_PeerPerformanceData ppd
Performance data for this peer.
GNUNET_PEER_Id pid
The peer&#39;s identity (interned version).
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◆ GSF_iterate_connected_peers_()

void GSF_iterate_connected_peers_ ( GSF_ConnectedPeerIterator  it,
void *  it_cls 
)

Iterate over all connected peers.

Parameters
itfunction to call for each peer
it_clsclosure for it
itfunction to call for each peer
it_clsclosure for it

Definition at line 1632 of file gnunet-service-fs_cp.c.

References call_iterator(), GNUNET_CONTAINER_multipeermap_iterate(), IterationContext::it, and IterationContext::it_cls.

Referenced by GSF_consider_forwarding().

1634 {
1635  struct IterationContext ic;
1636 
1637  ic.it = it;
1638  ic.it_cls = it_cls;
1640  &call_iterator,
1641  &ic);
1642 }
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().
static struct GNUNET_CONTAINER_MultiPeerMap * cp_map
Map from peer identities to struct GSF_ConnectPeer entries.
GSF_ConnectedPeerIterator it
Function to call on each entry.
void * it_cls
Closure for it.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
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◆ GSF_connected_peer_init_()

void GSF_connected_peer_init_ ( void  )

Initialize peer management subsystem.

Definition at line 1756 of file gnunet-service-fs_cp.c.

References cron_flush_respect(), GNUNET_CONTAINER_multipeermap_create(), GNUNET_PEERSTORE_connect(), GNUNET_SCHEDULER_add_with_priority(), GNUNET_SCHEDULER_PRIORITY_HIGH, GNUNET_YES, and GSF_cfg.

Referenced by run().

1757 {
1761  &cron_flush_respect, NULL);
1762 }
Run with high priority (important requests).
static struct GNUNET_CONTAINER_MultiPeerMap * cp_map
Map from peer identities to struct GSF_ConnectPeer entries.
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).
const struct GNUNET_CONFIGURATION_Handle * GSF_cfg
Our configuration.
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 struct GNUNET_PEERSTORE_Handle * peerstore
Handle to peerstore service.
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.
static void cron_flush_respect(void *cls)
Call this method periodically to flush respect information to disk.
#define GNUNET_YES
Definition: gnunet_common.h:80
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◆ GSF_connected_peer_done_()

void GSF_connected_peer_done_ ( void  )

Shutdown peer management subsystem.

Definition at line 1769 of file gnunet-service-fs_cp.c.

References flush_respect(), GNUNET_CONTAINER_multipeermap_destroy(), GNUNET_CONTAINER_multipeermap_iterate(), GNUNET_PEERSTORE_disconnect(), GNUNET_SCHEDULER_cancel(), and GNUNET_YES.

Referenced by shutdown_task().

1770 {
1772  &flush_respect,
1773  NULL);
1775  fr_task = NULL;
1777  cp_map = NULL;
1779  GNUNET_YES);
1780 
1781 }
static struct GNUNET_CONTAINER_MultiPeerMap * cp_map
Map from peer identities to struct GSF_ConnectPeer entries.
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
void GNUNET_PEERSTORE_disconnect(struct GNUNET_PEERSTORE_Handle *h, int sync_first)
Disconnect from the PEERSTORE service.
static struct GNUNET_PEERSTORE_Handle * peerstore
Handle to peerstore service.
static struct GNUNET_SCHEDULER_Task * fr_task
Task used to flush respect values to disk.
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 int flush_respect(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Write peer-respect information to a file - flush the buffer entry!
#define GNUNET_YES
Definition: gnunet_common.h:80
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:965
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