GNUnet  0.10.x
Data Structures | Macros | Enumerations | Functions | Variables
gnunet-service-testbed_links.c File Reference

TESTBED service components that deals with starting slave controllers and establishing lateral links between controllers. More...

#include "gnunet-service-testbed.h"
Include dependency graph for gnunet-service-testbed_links.c:

Go to the source code of this file.

Data Structures

struct  LCFContext
 Link controllers request forwarding context. More...
 
struct  NeighbourConnectNotification
 Notification context to be used to notify when connection to the neighbour's controller is opened. More...
 
struct  Neighbour
 A connected controller which is not our child. More...
 
struct  NeighbourConnectCtxt
 Context information for establishing a link to neighbour (Used is GST_handle_link_controllers() More...
 

Macros

#define LOG(kind, ...)   GNUNET_log_from(kind, "testbed-links", __VA_ARGS__)
 Redefine LOG with a changed log component string. More...
 
#define EVENT_MASK   (1LL << GNUNET_TESTBED_ET_OPERATION_FINISHED)
 The event mask for the events we listen from sub-controllers. More...
 

Enumerations

enum  LCFContextState { INIT, DELEGATED_HOST_REGISTERED, SLAVE_HOST_REGISTERED, FINISHED }
 States of LCFContext. More...
 

Functions

static void slave_list_add (struct Slave *slave)
 Adds a slave to the slave array. More...
 
static int drop_client_entries (void *cls, const struct GNUNET_HashCode *key, void *value)
 Clean up all forwarded operation overlay context matching the client given in cls. More...
 
static void route_list_add (struct Route *route)
 Adds a route to the route list. More...
 
static void neighbour_list_add (struct Neighbour *n)
 Add a neighbour to the neighbour list. More...
 
void GST_route_list_clear ()
 Cleans up the route list. More...
 
static int reghost_free_iterator (void *cls, const struct GNUNET_HashCode *key, void *value)
 Iterator for freeing hash map entries in a slave's reghost_map. More...
 
static void kill_slave (struct Slave *slave)
 Kill a Slave object. More...
 
static void destroy_slave (struct Slave *slave)
 Destroy a Slave object. More...
 
void GST_slave_list_clear ()
 Cleans up the slave list. More...
 
struct RouteGST_find_dest_route (uint32_t host_id)
 Finds the route with directly connected host as destination through which the destination host can be reached. More...
 
static void send_controller_link_response (struct GNUNET_SERVICE_Client *client, uint64_t operation_id, const struct GNUNET_CONFIGURATION_Handle *cfg, const char *emsg)
 Function to send a failure reponse for controller link operation. More...
 
static void lcf_proc_task (void *cls)
 The Link Controller forwarding task. More...
 
static void lcf_proc_cc (void *cls, const char *emsg)
 Completion callback for host registrations while forwarding Link Controller messages. More...
 
static void lcf_forwarded_operation_timeout (void *cls)
 Task to free resources when forwarded link controllers has been timedout. More...
 
static void slave_event_cb (void *cls, const struct GNUNET_TESTBED_EventInformation *event)
 Callback for event from slave controllers. More...
 
static void slave_status_cb (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg, int status)
 Callback to signal successfull startup of the controller process. More...
 
static void trigger_notifications (struct Neighbour *n)
 Trigger notification task if there are notification requests currently waiting in the given neighbour. More...
 
static void neighbour_connect_notify_task (void *cls)
 Task to call the notification queued in the notifications list of the given neighbour. More...
 
static void opstart_neighbour_conn (void *cls)
 Callback to be called when the neighbour connect operation is started. More...
 
static void oprelease_neighbour_conn (void *cls)
 Callback to be called when the neighbour connect operation is released. More...
 
struct NeighbourConnectNotificationGST_neighbour_get_connection (struct Neighbour *n, GST_NeigbourConnectNotifyCallback cb, void *cb_cls)
 Try to open a connection to the given neigbour. More...
 
void GST_neighbour_get_connection_cancel (struct NeighbourConnectNotification *h)
 Cancel the request for opening a connection to the neighbour. More...
 
void GST_neighbour_release_connection (struct Neighbour *n)
 Release the connection to the neighbour. More...
 
static void cleanup_ncc (struct NeighbourConnectCtxt *ncc)
 Cleanup neighbour connect contexts. More...
 
void GST_neighbour_list_clean ()
 Cleans up the neighbour list. More...
 
struct NeighbourGST_get_neighbour (uint32_t id)
 Get a neighbour from the neighbour list. More...
 
void GST_free_nccq ()
 Function to cleanup the neighbour connect contexts. More...
 
static void timeout_neighbour_connect (void *cls)
 Task to be run upon timeout while attempting to connect to the neighbour. More...
 
static void neighbour_connect_cb (void *cls, struct GNUNET_TESTBED_Controller *c)
 Callback called when a connection to the neighbour is made. More...
 
struct NeighbourGST_create_neighbour (struct GNUNET_TESTBED_Host *host)
 Function to create a neigbour and add it into the neighbour list. More...
 
void handle_link_controllers (void *cls, const struct GNUNET_TESTBED_ControllerLinkRequest *msg)
 Message handler for #GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS message. More...
 
void GST_link_notify_disconnect (struct GNUNET_SERVICE_Client *client)
 Clean up client handle if we stored any via handle_link_controllers(), the given client disconnected. More...
 
void GST_free_lcf ()
 Cleans up the queue used for forwarding link controllers requests. More...
 

Variables

static struct Neighbour ** neighbour_list
 The neighbour list. More...
 
static unsigned int neighbour_list_size
 The size of the neighbour list. More...
 
struct NeighbourConnectCtxtncc_head
 DLL head for the list of neighbour connect contexts. More...
 
struct NeighbourConnectCtxtncc_tail
 DLL tail for the list of neighbour connect contexts. More...
 
struct Slave ** GST_slave_list
 A list of directly linked neighbours. More...
 
unsigned int GST_slave_list_size
 The size of directly linked neighbours list. More...
 
static struct Route ** route_list
 A list of routes. More...
 
static struct LCFContextlcf_head
 The LCF queue. More...
 
static struct LCFContextlcf_tail
 The tail for the LCF queue. More...
 
static struct GNUNET_SCHEDULER_Tasklcf_proc_task_id
 The lcf_task handle. More...
 
static unsigned int route_list_size
 The size of the route list. More...
 

Detailed Description

TESTBED service components that deals with starting slave controllers and establishing lateral links between controllers.

Author
Sree Harsha Totakura

Definition in file gnunet-service-testbed_links.c.

Macro Definition Documentation

◆ LOG

#define LOG (   kind,
  ... 
)    GNUNET_log_from(kind, "testbed-links", __VA_ARGS__)

Redefine LOG with a changed log component string.

Definition at line 36 of file gnunet-service-testbed_links.c.

Referenced by handle_link_controllers(), lcf_forwarded_operation_timeout(), lcf_proc_cc(), and slave_status_cb().

◆ EVENT_MASK

#define EVENT_MASK   (1LL << GNUNET_TESTBED_ET_OPERATION_FINISHED)

The event mask for the events we listen from sub-controllers.

Definition at line 42 of file gnunet-service-testbed_links.c.

Referenced by opstart_neighbour_conn(), and slave_status_cb().

Enumeration Type Documentation

◆ LCFContextState

States of LCFContext.

Enumerator
INIT 

The Context has been initialized; Nothing has been done on it.

DELEGATED_HOST_REGISTERED 

Delegated host has been registered at the forwarding controller.

SLAVE_HOST_REGISTERED 

The slave host has been registred at the forwarding controller.

FINISHED 

The context has been finished (may have error)

Definition at line 48 of file gnunet-service-testbed_links.c.

48  {
52  INIT,
53 
58 
63 
67  FINISHED
68 };

Function Documentation

◆ slave_list_add()

static void slave_list_add ( struct Slave slave)
static

Adds a slave to the slave array.

Parameters
slavethe slave controller to add

Definition at line 316 of file gnunet-service-testbed_links.c.

References GNUNET_assert, GST_array_grow_large_enough, GST_slave_list_size, and Slave::host_id.

Referenced by handle_link_controllers().

317 {
318  if (slave->host_id >= GST_slave_list_size)
321  slave->host_id);
322  GNUNET_assert(NULL == GST_slave_list[slave->host_id]);
323  GST_slave_list[slave->host_id] = slave;
324 }
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GST_array_grow_large_enough(ptr, size, accommodate_size)
Similar to GNUNET_array_grow(); however instead of calling GNUNET_array_grow() several times we call ...
uint32_t host_id
The id of the host this controller is running on.
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◆ drop_client_entries()

static int drop_client_entries ( void *  cls,
const struct GNUNET_HashCode key,
void *  value 
)
static

Clean up all forwarded operation overlay context matching the client given in cls.

Parameters
clsa struct GNUNET_SERVICE_Client * to match
keyunused
valuethe struct RegisteredHostContext to search for cls
Returns
GNUNET_OK (continue iterating)

Definition at line 337 of file gnunet-service-testbed_links.c.

References LCFContext::client, ForwardedOverlayConnectContext::client, RegisteredHostContext::focc_dll_head, GNUNET_OK, GST_cleanup_focc(), ForwardedOverlayConnectContext::next, and value.

Referenced by GST_link_notify_disconnect().

340 {
341  struct GNUNET_SERVICE_Client *client = cls;
342  struct RegisteredHostContext *rhc = value;
343  struct ForwardedOverlayConnectContext *focc;
344  struct ForwardedOverlayConnectContext *foccn;
345 
346  for (focc = rhc->focc_dll_head; NULL != focc; focc = foccn)
347  {
348  foccn = focc->next;
349  if (focc->client == client)
350  GST_cleanup_focc(focc);
351  }
352  return GNUNET_OK;
353 }
struct ForwardedOverlayConnectContext * focc_dll_head
Head of the ForwardedOverlayConnectContext DLL.
This context information will be created for each host that is registered at slave controllers during...
struct GNUNET_SERVICE_Client * client
The client handle.
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
Handle to a client that is connected to a service.
Definition: service.c:246
void GST_cleanup_focc(struct ForwardedOverlayConnectContext *focc)
Cleans up ForwardedOverlayConnectContext.
static char * value
Value of the record to add/remove.
Context information to used during operations which forward the overlay connect message.
struct ForwardedOverlayConnectContext * next
next ForwardedOverlayConnectContext in the DLL
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◆ route_list_add()

static void route_list_add ( struct Route route)
static

Adds a route to the route list.

Parameters
routethe route to add

Definition at line 362 of file gnunet-service-testbed_links.c.

References Route::dest, GNUNET_assert, GST_array_grow_large_enough, and route_list_size.

Referenced by handle_link_controllers().

363 {
364  if (route->dest >= route_list_size)
366  GNUNET_assert(NULL == route_list[route->dest]);
367  route_list[route->dest] = route;
368 }
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GST_array_grow_large_enough(ptr, size, accommodate_size)
Similar to GNUNET_array_grow(); however instead of calling GNUNET_array_grow() several times we call ...
uint32_t dest
destination host
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◆ neighbour_list_add()

static void neighbour_list_add ( struct Neighbour n)
static

Add a neighbour to the neighbour list.

Grows the neighbour list automatically.

Parameters
nthe neighbour to add

Definition at line 378 of file gnunet-service-testbed_links.c.

References GNUNET_assert, GST_array_grow_large_enough, Neighbour::host_id, and neighbour_list_size.

Referenced by GST_create_neighbour().

379 {
380  if (n->host_id >= neighbour_list_size)
382  GNUNET_assert(NULL == neighbour_list[n->host_id]);
383  neighbour_list[n->host_id] = n;
384 }
uint32_t host_id
The id of the host this controller is running on.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GST_array_grow_large_enough(ptr, size, accommodate_size)
Similar to GNUNET_array_grow(); however instead of calling GNUNET_array_grow() several times we call ...
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◆ GST_route_list_clear()

void GST_route_list_clear ( void  )

Cleans up the route list.

Definition at line 391 of file gnunet-service-testbed_links.c.

References GNUNET_free, GNUNET_free_non_null, id, and route_list_size.

Referenced by shutdown_task().

392 {
393  unsigned int id;
394 
395  for (id = 0; id < route_list_size; id++)
396  if (NULL != route_list[id])
397  GNUNET_free(route_list[id]);
399  route_list = NULL;
400 }
static struct GNUNET_IDENTITY_Handle * id
Handle to identity service.
#define GNUNET_free_non_null(ptr)
Free the memory pointed to by ptr if ptr is not NULL.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ reghost_free_iterator()

static int reghost_free_iterator ( void *  cls,
const struct GNUNET_HashCode key,
void *  value 
)
static

Iterator for freeing hash map entries in a slave's reghost_map.

Parameters
clshandle to the slave
keycurrent key code
valuevalue in the hash map
Returns
GNUNET_YES if we should continue to iterate, GNUNET_NO if not.

Definition at line 413 of file gnunet-service-testbed_links.c.

References RegisteredHostContext::focc_dll_head, GNUNET_assert, GNUNET_CONTAINER_multihashmap_remove(), GNUNET_free, GNUNET_YES, GST_cleanup_focc(), Slave::reghost_map, and value.

Referenced by kill_slave().

416 {
417  struct Slave *slave = cls;
418  struct RegisteredHostContext *rhc = value;
419  struct ForwardedOverlayConnectContext *focc;
420 
423  value));
424  while (NULL != (focc = rhc->focc_dll_head))
425  GST_cleanup_focc(focc);
427  return GNUNET_YES;
428 }
struct ForwardedOverlayConnectContext * focc_dll_head
Head of the ForwardedOverlayConnectContext DLL.
struct GNUNET_CONTAINER_MultiHashMap * reghost_map
Hashmap to hold Registered host contexts.
This context information will be created for each host that is registered at slave controllers during...
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
Structure representing a connected(directly-linked) controller.
void GST_cleanup_focc(struct ForwardedOverlayConnectContext *focc)
Cleans up ForwardedOverlayConnectContext.
static char * value
Value of the record to add/remove.
Context information to used during operations which forward the overlay connect message.
int GNUNET_CONTAINER_multihashmap_remove(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, const void *value)
Remove the given key-value pair from the map.
#define GNUNET_YES
Definition: gnunet_common.h:77
#define GNUNET_free(ptr)
Wrapper around free.
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◆ kill_slave()

static void kill_slave ( struct Slave slave)
static

Kill a Slave object.

Parameters
slavethe Slave object

Definition at line 437 of file gnunet-service-testbed_links.c.

References Slave::controller, Slave::controller_proc, GNUNET_assert, GNUNET_CONTAINER_DLL_remove, GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_free, GNUNET_SYSERR, GNUNET_TESTBED_cancel_registration(), GNUNET_TESTBED_controller_disconnect(), GNUNET_TESTBED_controller_kill_(), Slave::hr_dll_head, Slave::hr_dll_tail, LOG_DEBUG, reghost_free_iterator(), Slave::reghost_map, and Slave::rhandle.

Referenced by GST_slave_list_clear(), and slave_status_cb().

438 {
439  struct HostRegistration *hr_entry;
440 
441  while (NULL != (hr_entry = slave->hr_dll_head))
442  {
444  hr_entry);
445  GNUNET_free(hr_entry);
446  }
447  if (NULL != slave->rhandle)
452  slave));
454  if (NULL != slave->controller)
456  if (NULL != slave->controller_proc)
457  {
458  LOG_DEBUG("Stopping a slave\n");
460  }
461 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
struct GNUNET_CONTAINER_MultiHashMap * reghost_map
Hashmap to hold Registered host contexts.
void GNUNET_TESTBED_cancel_registration(struct GNUNET_TESTBED_HostRegistrationHandle *handle)
Cancel the pending registration.
void GNUNET_TESTBED_controller_disconnect(struct GNUNET_TESTBED_Controller *c)
Stop the given controller (also will terminate all peers and controllers dependent on this controller...
Definition: testbed_api.c:1713
void GNUNET_TESTBED_controller_kill_(struct GNUNET_TESTBED_ControllerProc *cproc)
Sends termination signal to the controller&#39;s helper process.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_TESTBED_HostRegistrationHandle * rhandle
The current host registration handle.
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
A DLL of host registrations to be made.
struct HostRegistration * hr_dll_tail
Tail of the host registration DLL.
struct HostRegistration * hr_dll_head
Head of the host registration DLL.
struct GNUNET_TESTBED_ControllerProc * controller_proc
The controller process handle if we had started the controller.
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
struct GNUNET_TESTBED_Controller * controller
The controller handle.
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 LOG_DEBUG(...)
Debug logging shorthand.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ destroy_slave()

static void destroy_slave ( struct Slave slave)
static

Destroy a Slave object.

Parameters
slavethe Slave object

Definition at line 470 of file gnunet-service-testbed_links.c.

References Slave::controller_proc, GNUNET_free, GNUNET_TESTBED_controller_destroy_(), Slave::host_id, and LOG_DEBUG.

Referenced by GST_slave_list_clear(), and slave_status_cb().

471 {
472  if (NULL != slave->controller_proc)
473  {
475  LOG_DEBUG("Slave stopped\n");
476  }
477  GST_slave_list[slave->host_id] = NULL;
478  GNUNET_free(slave);
479 }
void GNUNET_TESTBED_controller_destroy_(struct GNUNET_TESTBED_ControllerProc *cproc)
Cleans-up the controller&#39;s helper process handle.
struct GNUNET_TESTBED_ControllerProc * controller_proc
The controller process handle if we had started the controller.
uint32_t host_id
The id of the host this controller is running on.
#define LOG_DEBUG(...)
Debug logging shorthand.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GST_slave_list_clear()

void GST_slave_list_clear ( void  )

Cleans up the slave list.

Definition at line 486 of file gnunet-service-testbed_links.c.

References destroy_slave(), GNUNET_free_non_null, GST_slave_list_size, id, and kill_slave().

Referenced by shutdown_task().

487 {
488  struct Slave *slave;
489  unsigned int id;
490 
491  for (id = 0; id < GST_slave_list_size; id++)
492  {
493  slave = GST_slave_list[id];
494  if (NULL == slave)
495  continue;
496  kill_slave(slave);
497  }
498  for (id = 0; id < GST_slave_list_size; id++)
499  {
500  slave = GST_slave_list[id];
501  if (NULL == slave)
502  continue;
503  destroy_slave(slave);
504  }
506  GST_slave_list = NULL;
507 }
static struct GNUNET_IDENTITY_Handle * id
Handle to identity service.
#define GNUNET_free_non_null(ptr)
Free the memory pointed to by ptr if ptr is not NULL.
Structure representing a connected(directly-linked) controller.
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◆ GST_find_dest_route()

struct Route* GST_find_dest_route ( uint32_t  host_id)

Finds the route with directly connected host as destination through which the destination host can be reached.

Parameters
host_idthe id of the destination host
Returns
the route with directly connected destination host; NULL if no route is found

Definition at line 519 of file gnunet-service-testbed_links.c.

References GST_context, Context::host_id, route_list_size, and Route::thru.

Referenced by forward_overlay_connect(), handle_link_controllers(), and handle_peer_create().

520 {
521  struct Route *route;
522 
523  if (route_list_size <= host_id)
524  return NULL;
525  while (NULL != (route = route_list[host_id]))
526  {
527  if (route->thru == GST_context->host_id)
528  break;
529  host_id = route->thru;
530  }
531  return route;
532 }
uint32_t thru
The destination host is reachable thru.
uint32_t host_id
Our host id according to this context.
A routing entry.
struct Context * GST_context
The master context; generated with the first INIT message.
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◆ send_controller_link_response()

static void send_controller_link_response ( struct GNUNET_SERVICE_Client client,
uint64_t  operation_id,
const struct GNUNET_CONFIGURATION_Handle cfg,
const char *  emsg 
)
static

Function to send a failure reponse for controller link operation.

Parameters
clientthe client to send the message to
operation_idthe operation ID of the controller link request
cfgthe configuration with which the delegated controller is started. Can be NULL if the delegated controller is not started but just linked to.
emsgset to an error message explaining why the controller link failed. Setting this to NULL signifies success. !This should be NULL if cfg is set!

Definition at line 548 of file gnunet-service-testbed_links.c.

References GNUNET_TESTBED_ControllerLinkResponse::config_size, env, GNUNET_assert, GNUNET_free, GNUNET_htonll(), GNUNET_memcpy, GNUNET_MESSAGE_TYPE_TESTBED_LINK_CONTROLLERS_RESULT, GNUNET_MQ_msg_extra, GNUNET_MQ_send(), GNUNET_SERVICE_client_get_mq(), GNUNET_TESTBED_compress_cfg_(), GNUNET_YES, lcf_proc_task(), msg, GNUNET_TESTBED_ControllerLinkResponse::operation_id, and GNUNET_TESTBED_ControllerLinkResponse::success.

Referenced by lcf_forwarded_operation_timeout(), neighbour_connect_cb(), slave_event_cb(), slave_status_cb(), and timeout_neighbour_connect().

552 {
553  struct GNUNET_MQ_Envelope *env;
555  char *xconfig;
556  size_t config_size;
557  size_t xconfig_size;
558  uint16_t msize;
559 
560  GNUNET_assert((NULL == cfg) || (NULL == emsg));
561  xconfig = NULL;
562  xconfig_size = 0;
563  config_size = 0;
564  msize = 0;
565  if (NULL != cfg)
566  {
567  xconfig = GNUNET_TESTBED_compress_cfg_(cfg,
568  &config_size,
569  &xconfig_size);
570  msize += xconfig_size;
571  }
572  if (NULL != emsg)
573  msize += strlen(emsg);
574  env = GNUNET_MQ_msg_extra(msg,
575  msize,
577  if (NULL == emsg)
578  msg->success = htons(GNUNET_YES);
580  msg->config_size = htons((uint16_t)config_size);
581  if (NULL != xconfig)
582  {
583  GNUNET_memcpy(&msg[1],
584  xconfig,
585  xconfig_size);
586  GNUNET_free(xconfig);
587  }
588  if (NULL != emsg)
589  GNUNET_memcpy(&msg[1],
590  emsg,
591  strlen(emsg));
593  env);
594 }
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
uint64_t operation_id
The id of the operation which created this message.
Definition: testbed.h:185
struct GNUNET_MQ_Handle * GNUNET_SERVICE_client_get_mq(struct GNUNET_SERVICE_Client *c)
Obtain the message queue of c.
Definition: service.c:2424
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
Response message for ControllerLinkRequest message.
Definition: testbed.h:165
#define GNUNET_MESSAGE_TYPE_TESTBED_LINK_CONTROLLERS_RESULT
Message to signal the result of GNUNET_MESSAGE_TYPE_TESTBED_LINK_CONTROLLERS request.
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct...
Definition: gnunet_mq_lib.h:52
char * GNUNET_TESTBED_compress_cfg_(const struct GNUNET_CONFIGURATION_Handle *cfg, size_t *size, size_t *xsize)
Function to serialize and compress using zlib a configuration through a configuration handle...
Definition: testbed_api.c:1777
uint64_t GNUNET_htonll(uint64_t n)
Convert unsigned 64-bit integer to network byte order.
Definition: common_endian.c:35
uint16_t success
Set to GNUNET_YES to signify SUCCESS; GNUNET_NO to signify failure.
Definition: testbed.h:180
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
uint16_t config_size
The size of the compressed configuration.
Definition: testbed.h:175
#define GNUNET_YES
Definition: gnunet_common.h:77
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
#define GNUNET_free(ptr)
Wrapper around free.
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◆ lcf_proc_task()

static void lcf_proc_task ( void *  cls)
static

The Link Controller forwarding task.

Parameters
clsthe LCFContext

Definition at line 689 of file gnunet-service-testbed_links.c.

References Slave::controller, LCFContext::delegated_host_id, DELEGATED_HOST_REGISTERED, FINISHED, LCFContext::gateway, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_NO, GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_add_now(), GNUNET_TESTBED_controller_link(), GNUNET_TESTBED_is_host_registered_(), GNUNET_TESTBED_operation_done(), GST_host_list, GST_queue_host_registration(), GST_timeout, INIT, LCFContext::is_subordinate, lcf_forwarded_operation_timeout(), lcf_proc_cc(), LCFContext::op, LCFContext::slave_host_id, SLAVE_HOST_REGISTERED, LCFContext::state, and LCFContext::timeout_task.

Referenced by handle_link_controllers(), lcf_forwarded_operation_timeout(), lcf_proc_cc(), send_controller_link_response(), and slave_event_cb().

690 {
691  struct LCFContext *lcf = cls;
692 
693  lcf_proc_task_id = NULL;
694  switch (lcf->state)
695  {
696  case INIT:
697  if (GNUNET_NO ==
699  [lcf->delegated_host_id],
700  lcf->gateway->controller))
701  {
704  }
705  else
706  {
709  }
710  break;
711 
713  if (GNUNET_NO ==
715  lcf->gateway->controller))
716  {
719  }
720  else
721  {
724  }
725  break;
726 
729  lcf->gateway->controller,
732  lcf->is_subordinate);
733  lcf->timeout_task =
736  lcf);
737  lcf->state = FINISHED;
738  break;
739 
740  case FINISHED:
741  if (NULL != lcf->op)
744  lcf_tail,
745  lcf);
746  GNUNET_free(lcf);
747  if (NULL != lcf_head)
749  lcf_head);
750  }
751 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
Link controllers request forwarding context.
struct GNUNET_TESTBED_Operation * GNUNET_TESTBED_controller_link(void *op_cls, struct GNUNET_TESTBED_Controller *master, struct GNUNET_TESTBED_Host *delegated_host, struct GNUNET_TESTBED_Host *slave_host, int is_subordinate)
Create a link from slave controller to delegated controller.
Definition: testbed_api.c:1824
int is_subordinate
should the slave controller start the delegated controller?
void GST_queue_host_registration(struct Slave *slave, GNUNET_TESTBED_HostRegistrationCompletion cb, void *cb_cls, struct GNUNET_TESTBED_Host *host)
Adds a host registration&#39;s request to a slave&#39;s registration queue.
#define GNUNET_NO
Definition: gnunet_common.h:78
struct GNUNET_TESTBED_Operation * op
Handle for operations which are forwarded while linking controllers.
enum LCFContextState state
The state of this context.
struct Slave * gateway
The gateway which will pass the link message to delegated host.
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_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_TESTBED_Host ** GST_host_list
Array of hosts.
void GNUNET_TESTBED_operation_done(struct GNUNET_TESTBED_Operation *operation)
This function is used to signal that the event information (struct GNUNET_TESTBED_EventInformation) f...
Definition: testbed_api.c:2037
uint32_t delegated_host_id
The delegated host.
int GNUNET_TESTBED_is_host_registered_(const struct GNUNET_TESTBED_Host *host, const struct GNUNET_TESTBED_Controller *const controller)
Checks whether a host has been registered.
uint32_t slave_host_id
The slave host.
struct GNUNET_TIME_Relative GST_timeout
Timeout for operations which may take some time.
struct GNUNET_SCHEDULER_Task * timeout_task
The timeout task.
struct GNUNET_TESTBED_Controller * controller
The controller handle.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ lcf_proc_cc()

static void lcf_proc_cc ( void *  cls,
const char *  emsg 
)
static

Completion callback for host registrations while forwarding Link Controller messages.

Parameters
clsthe LCFContext
emsgthe error message; NULL if host registration is successful

Definition at line 613 of file gnunet-service-testbed_links.c.

References DELEGATED_HOST_REGISTERED, FINISHED, GNUNET_assert, GNUNET_ERROR_TYPE_WARNING, GNUNET_SCHEDULER_add_now(), INIT, lcf_proc_task(), LOG, SLAVE_HOST_REGISTERED, and LCFContext::state.

Referenced by lcf_proc_task().

615 {
616  struct LCFContext *lcf = cls;
617 
619  switch (lcf->state)
620  {
621  case INIT:
622  if (NULL != emsg)
623  goto registration_error;
626  break;
627 
629  if (NULL != emsg)
630  goto registration_error;
633  break;
634 
635  default:
636  GNUNET_assert(0); /* Shouldn't reach here */
637  }
638  return;
639 
640 registration_error:
642  "Host registration failed with message: %s\n",
643  emsg);
644  lcf->state = FINISHED;
646  lcf);
647 }
Link controllers request forwarding context.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
enum LCFContextState state
The state of this context.
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
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◆ lcf_forwarded_operation_timeout()

static void lcf_forwarded_operation_timeout ( void *  cls)
static

Task to free resources when forwarded link controllers has been timedout.

Parameters
clsthe LCFContext

Definition at line 665 of file gnunet-service-testbed_links.c.

References LCFContext::client, GNUNET_assert, GNUNET_ERROR_TYPE_WARNING, GNUNET_SCHEDULER_add_now(), lcf_proc_task(), LOG, LCFContext::operation_id, send_controller_link_response(), and LCFContext::timeout_task.

Referenced by lcf_proc_task().

666 {
667  struct LCFContext *lcf = cls;
668 
669  lcf->timeout_task = NULL;
670  // GST_forwarded_operation_timeout (lcf->fopc, tc);
672  "A forwarded controller link operation has timed out\n");
674  lcf->operation_id,
675  NULL,
676  "A forwarded controller link operation has timed out\n");
679  lcf);
680 }
uint64_t operation_id
The id of the operation which created this context.
Link controllers request forwarding context.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_SERVICE_Client * client
The client which has asked to perform this operation.
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_SCHEDULER_Task * timeout_task
The timeout task.
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◆ slave_event_cb()

static void slave_event_cb ( void *  cls,
const struct GNUNET_TESTBED_EventInformation event 
)
static

Callback for event from slave controllers.

Parameters
clsNULL
eventinformation about the event

Definition at line 761 of file gnunet-service-testbed_links.c.

References LCFContext::client, LCFContext::delegated_host_id, GNUNET_TESTBED_EventInformation::details, FINISHED, GNUNET_assert, GNUNET_SCHEDULER_add_now(), GNUNET_SCHEDULER_cancel(), GNUNET_TESTBED_ET_OPERATION_FINISHED, GNUNET_TESTBED_host_get_cfg_(), GNUNET_TESTBED_operation_done(), GST_host_list, lcf_proc_task(), LCFContext::op, GNUNET_TESTBED_EventInformation::op, GNUNET_TESTBED_EventInformation::operation_finished, LCFContext::operation_id, send_controller_link_response(), LCFContext::state, LCFContext::timeout_task, and GNUNET_TESTBED_EventInformation::type.

Referenced by opstart_neighbour_conn(), and slave_status_cb().

762 {
763  struct LCFContext *lcf;
764 
765  /* We currently only get here when working on LCFContexts */
767  lcf = event->op_cls;
768  GNUNET_assert(lcf->op == event->op);
770  lcf->op = NULL;
771  GNUNET_assert(FINISHED == lcf->state);
772  GNUNET_assert(NULL != lcf->timeout_task);
774  if (NULL == event->details.operation_finished.emsg)
778  NULL);
779  else
781  NULL,
782  event->details.operation_finished.emsg);
785  return;
786 }
uint64_t operation_id
The id of the operation which created this context.
Link controllers request forwarding context.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
enum GNUNET_TESTBED_EventType type
Type of the event.
struct GNUNET_TESTBED_Operation * op
Handle for operations which are forwarded while linking controllers.
enum LCFContextState state
The state of this context.
struct GNUNET_SERVICE_Client * client
The client which has asked to perform this operation.
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_TESTBED_Host ** GST_host_list
Array of hosts.
A requested testbed operation has been completed.
void GNUNET_TESTBED_operation_done(struct GNUNET_TESTBED_Operation *operation)
This function is used to signal that the event information (struct GNUNET_TESTBED_EventInformation) f...
Definition: testbed_api.c:2037
uint32_t delegated_host_id
The delegated host.
const struct GNUNET_CONFIGURATION_Handle * GNUNET_TESTBED_host_get_cfg_(const struct GNUNET_TESTBED_Host *host)
Obtain the host&#39;s configuration template.
struct GNUNET_TESTBED_EventInformation::@58::@63 operation_finished
Details about an operation finished event.
union GNUNET_TESTBED_EventInformation::@58 details
Details about the event.
struct GNUNET_SCHEDULER_Task * timeout_task
The timeout task.
struct GNUNET_TESTBED_Operation * op
Handle for the corresponding operation that generated this event.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
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◆ slave_status_cb()

static void slave_status_cb ( void *  cls,
const struct GNUNET_CONFIGURATION_Handle cfg,
int  status 
)
static

Callback to signal successfull startup of the controller process.

Parameters
clsthe handle to the slave whose status is to be found here
cfgthe configuration with which the controller has been started; NULL if status is not GNUNET_OK
statusGNUNET_OK if the startup is successfull; GNUNET_SYSERR if not, GNUNET_TESTBED_controller_stop() shouldn't be called in this case

Definition at line 799 of file gnunet-service-testbed_links.c.

References LinkControllersContext::client, Slave::controller, Slave::controller_proc, destroy_slave(), EVENT_MASK, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_SCHEDULER_shutdown(), GNUNET_SERVICE_client_continue(), GNUNET_SYSERR, GNUNET_TESTBED_controller_connect(), GST_free_lcf(), GST_host_list, Slave::host_id, kill_slave(), Slave::lcc, LOG, LinkControllersContext::operation_id, send_controller_link_response(), slave_event_cb(), and trigger_notifications().

Referenced by handle_link_controllers().

802 {
803  struct Slave *slave = cls;
804  struct LinkControllersContext *lcc;
805 
806  lcc = slave->lcc;
807  if (GNUNET_SYSERR == status)
808  {
809  slave->controller_proc = NULL;
810  /* Stop all link controller forwarding tasks since we shutdown here anyway
811  and as these tasks they depend on the operation queues which are created
812  through GNUNET_TESTBED_controller_connect() and in kill_slave() we call
813  the destructor function GNUNET_TESTBED_controller_disconnect() */
814  GST_free_lcf();
815  kill_slave(slave);
816  destroy_slave(slave);
817  slave = NULL;
818  LOG(GNUNET_ERROR_TYPE_WARNING, "Unexpected slave shutdown\n");
819  GNUNET_SCHEDULER_shutdown(); /* We too shutdown */
820  goto clean_lcc;
821  }
822  slave->controller =
825  slave);
826  if (NULL != slave->controller)
827  {
828  send_controller_link_response(lcc->client, lcc->operation_id, cfg, NULL);
829  }
830  else
831  {
833  "Could not connect to delegated controller");
834  kill_slave(slave);
835  destroy_slave(slave);
836  slave = NULL;
837  }
838 
839 clean_lcc:
840  if (NULL != lcc)
841  {
842  if (NULL != lcc->client)
843  {
845  lcc->client = NULL;
846  }
847  GNUNET_free(lcc);
848  }
849  if (NULL != slave)
850  slave->lcc = NULL;
851 }
Structure representing a connected(directly-linked) controller.
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:517
Context information used while linking controllers.
struct GNUNET_TESTBED_Host ** GST_host_list
Array of hosts.
uint16_t status
See PRISM_STATUS_*-constants.
struct GNUNET_TESTBED_ControllerProc * controller_proc
The controller process handle if we had started the controller.
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
uint64_t operation_id
The ID of the operation.
struct LinkControllersContext * lcc
handle to lcc which is associated with this slave startup.
struct GNUNET_TESTBED_Controller * GNUNET_TESTBED_controller_connect(struct GNUNET_TESTBED_Host *host, uint64_t event_mask, GNUNET_TESTBED_ControllerCallback cc, void *cc_cls)
Connect to a controller process.
Definition: testbed_api.c:1547
uint32_t host_id
The id of the host this controller is running on.
struct GNUNET_TESTBED_Controller * controller
The controller handle.
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
#define GNUNET_free(ptr)
Wrapper around free.
struct GNUNET_SERVICE_Client * client
The client which initiated the link controller operation.
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◆ trigger_notifications()

static void trigger_notifications ( struct Neighbour n)
static

Trigger notification task if there are notification requests currently waiting in the given neighbour.

Also activates the neighbour connect operation if it was previously inactivated so that the connection to the neighbour can be re-used

Parameters
nthe neighbour

Definition at line 898 of file gnunet-service-testbed_links.c.

References Neighbour::conn_op, Neighbour::controller, GNUNET_assert, GNUNET_SCHEDULER_add_now(), GNUNET_TESTBED_operation_activate_(), Neighbour::inactive, neighbour_connect_notify_task(), Neighbour::nl_head, Neighbour::notify_task, and Neighbour::reference_cnt.

Referenced by GST_neighbour_get_connection(), GST_neighbour_get_connection_cancel(), neighbour_connect_notify_task(), opstart_neighbour_conn(), and slave_status_cb().

899 {
900  GNUNET_assert(NULL != n->conn_op);
901  if (NULL == n->nl_head)
902  return;
903  if (NULL == n->controller)
904  return;
905  if (NULL != n->notify_task)
906  return;
907  if (1 == n->inactive)
908  {
909  GNUNET_assert(0 == n->reference_cnt);
911  n->inactive = 0;
912  }
913  n->reference_cnt++;
914  n->notify_task =
916 }
unsigned int inactive
Is the conn_op inactivated?
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
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_TESTBED_Controller * controller
The controller handle.
struct GNUNET_TESTBED_Operation * conn_op
Operation handle for opening a lateral connection to another controller.
void GNUNET_TESTBED_operation_activate_(struct GNUNET_TESTBED_Operation *op)
Marks and inactive operation as active.
unsigned int reference_cnt
How many references are present currently to this neighbour&#39;s connection.
struct NeighbourConnectNotification * nl_head
DLL head for the list of notification requests.
struct GNUNET_SCHEDULER_Task * notify_task
Task id for the task to call notifications from the notification list.
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◆ neighbour_connect_notify_task()

static void neighbour_connect_notify_task ( void *  cls)
static

Task to call the notification queued in the notifications list of the given neighbour.

Parameters
clsthe neighbour

Definition at line 873 of file gnunet-service-testbed_links.c.

References NeighbourConnectNotification::cb, NeighbourConnectNotification::cb_cls, Neighbour::controller, GNUNET_assert, GNUNET_CONTAINER_DLL_remove, GNUNET_free, h, Neighbour::nl_head, Neighbour::nl_tail, Neighbour::notify_task, and trigger_notifications().

Referenced by trigger_notifications().

874 {
875  struct Neighbour *n = cls;
877 
878  GNUNET_assert(NULL != (h = n->nl_head));
879  GNUNET_assert(NULL != n->notify_task);
880  n->notify_task = NULL;
881  GNUNET_assert(NULL != n->controller);
884  h->cb(h->cb_cls, n->controller);
885  GNUNET_free(h);
886 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
A connected controller which is not our child.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
Notification context to be used to notify when connection to the neighbour&#39;s controller is opened...
struct NeighbourConnectNotification * nl_tail
DLL tail for the list of notification requests.
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:94
GST_NeigbourConnectNotifyCallback cb
The notification callback to call when we are connect to neighbour.
void * cb_cls
The closure for the above callback.
struct GNUNET_TESTBED_Controller * controller
The controller handle.
struct NeighbourConnectNotification * nl_head
DLL head for the list of notification requests.
#define GNUNET_free(ptr)
Wrapper around free.
struct GNUNET_SCHEDULER_Task * notify_task
Task id for the task to call notifications from the notification list.
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◆ opstart_neighbour_conn()

static void opstart_neighbour_conn ( void *  cls)
static

Callback to be called when the neighbour connect operation is started.

The connection to the neigbour is opened here and any pending notifications are trigger.

Parameters
clsthe neighbour

Definition at line 927 of file gnunet-service-testbed_links.c.

References Neighbour::conn_op, Neighbour::controller, EVENT_MASK, GNUNET_assert, GNUNET_TESTBED_controller_connect(), GST_host_list, Neighbour::host_id, LOG_DEBUG, slave_event_cb(), and trigger_notifications().

Referenced by GST_neighbour_get_connection().

928 {
929  struct Neighbour *n = cls;
930 
931  GNUNET_assert(NULL != n->conn_op);
932  GNUNET_assert(NULL == n->controller);
933  LOG_DEBUG("Opening connection to controller on host %u\n", n->host_id);
935  EVENT_MASK,
937  NULL);
939 }
A connected controller which is not our child.
uint32_t host_id
The id of the host this controller is running on.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_TESTBED_Host ** GST_host_list
Array of hosts.
struct GNUNET_TESTBED_Controller * controller
The controller handle.
struct GNUNET_TESTBED_Operation * conn_op
Operation handle for opening a lateral connection to another controller.
struct GNUNET_TESTBED_Controller * GNUNET_TESTBED_controller_connect(struct GNUNET_TESTBED_Host *host, uint64_t event_mask, GNUNET_TESTBED_ControllerCallback cc, void *cc_cls)
Connect to a controller process.
Definition: testbed_api.c:1547
#define LOG_DEBUG(...)
Debug logging shorthand.
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◆ oprelease_neighbour_conn()

static void oprelease_neighbour_conn ( void *  cls)
static

Callback to be called when the neighbour connect operation is released.

Parameters
clsthe neighbour

Definition at line 948 of file gnunet-service-testbed_links.c.

References Neighbour::conn_op, Neighbour::controller, GNUNET_assert, GNUNET_TESTBED_controller_disconnect(), Neighbour::host_id, Neighbour::inactive, LOG_DEBUG, Neighbour::nl_head, Neighbour::notify_task, and Neighbour::reference_cnt.

Referenced by GST_neighbour_get_connection().

949 {
950  struct Neighbour *n = cls;
951 
952  GNUNET_assert(0 == n->reference_cnt);
953  GNUNET_assert(NULL == n->notify_task);
954  GNUNET_assert(NULL == n->nl_head);
955  if (NULL != n->controller)
956  {
957  LOG_DEBUG("Closing connection to controller on host %u\n", n->host_id);
959  n->controller = NULL;
960  }
961  n->conn_op = NULL;
962  n->inactive = 0;
963 }
A connected controller which is not our child.
uint32_t host_id
The id of the host this controller is running on.
void GNUNET_TESTBED_controller_disconnect(struct GNUNET_TESTBED_Controller *c)
Stop the given controller (also will terminate all peers and controllers dependent on this controller...
Definition: testbed_api.c:1713
unsigned int inactive
Is the conn_op inactivated?
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_TESTBED_Controller * controller
The controller handle.
struct GNUNET_TESTBED_Operation * conn_op
Operation handle for opening a lateral connection to another controller.
unsigned int reference_cnt
How many references are present currently to this neighbour&#39;s connection.
struct NeighbourConnectNotification * nl_head
DLL head for the list of notification requests.
#define LOG_DEBUG(...)
Debug logging shorthand.
struct GNUNET_SCHEDULER_Task * notify_task
Task id for the task to call notifications from the notification list.
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◆ GST_neighbour_get_connection()

struct NeighbourConnectNotification* GST_neighbour_get_connection ( struct Neighbour n,
GST_NeigbourConnectNotifyCallback  cb,
void *  cb_cls 
)

Try to open a connection to the given neigbour.

If the connection is open already, then it is re-used. If not, the request is queued in the operation queues responsible for bounding the total number of file descriptors. The actual connection will happen when the operation queue marks the corresponding operation as active.

Parameters
nthe neighbour to open a connection to
cbthe notification callback to call when the connection is opened
cb_clsthe closure for the above callback

Definition at line 978 of file gnunet-service-testbed_links.c.

References NeighbourConnectNotification::cb, NeighbourConnectNotification::cb_cls, Neighbour::conn_op, Neighbour::controller, GNUNET_assert, GNUNET_CONTAINER_DLL_insert_tail, GNUNET_new, GNUNET_TESTBED_operation_begin_wait_(), GNUNET_TESTBED_operation_create_(), GNUNET_TESTBED_operation_queue_insert_(), GST_opq_openfds, h, Neighbour::host_id, LOG_DEBUG, NeighbourConnectNotification::n, Neighbour::nl_head, Neighbour::nl_tail, oprelease_neighbour_conn(), opstart_neighbour_conn(), and trigger_notifications().

Referenced by handle_link_controllers(), and handle_overlay_connect().

981 {
983 
984  GNUNET_assert(NULL != cb);
985  LOG_DEBUG("Attempting to get connection to controller on host %u\n",
986  n->host_id);
988  h->n = n;
989  h->cb = cb;
990  h->cb_cls = cb_cls;
992  if (NULL == n->conn_op)
993  {
994  GNUNET_assert(NULL == n->controller);
999  return h;
1000  }
1002  return h;
1003 }
uint32_t host_id
The id of the host this controller is running on.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
Notification context to be used to notify when connection to the neighbour&#39;s controller is opened...
struct GNUNET_TESTBED_Operation * GNUNET_TESTBED_operation_create_(void *cls, OperationStart start, OperationRelease release)
Create an &#39;operation&#39; to be performed.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
void GNUNET_TESTBED_operation_queue_insert_(struct OperationQueue *queue, struct GNUNET_TESTBED_Operation *op)
Add an operation to a queue.
struct NeighbourConnectNotification * nl_tail
DLL tail for the list of notification requests.
struct OperationQueue * GST_opq_openfds
Operation queue for open file descriptors.
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:94
GST_NeigbourConnectNotifyCallback cb
The notification callback to call when we are connect to neighbour.
void * cb_cls
The closure for the above callback.
struct GNUNET_TESTBED_Controller * controller
The controller handle.
struct GNUNET_TESTBED_Operation * conn_op
Operation handle for opening a lateral connection to another controller.
struct Neighbour * n
The neighbour.
#define GNUNET_CONTAINER_DLL_insert_tail(head, tail, element)
Insert an element at the tail of a DLL.
void GNUNET_TESTBED_operation_begin_wait_(struct GNUNET_TESTBED_Operation *op)
Marks the given operation as waiting on the queues.
struct NeighbourConnectNotification * nl_head
DLL head for the list of notification requests.
#define LOG_DEBUG(...)
Debug logging shorthand.
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◆ GST_neighbour_get_connection_cancel()

void GST_neighbour_get_connection_cancel ( struct NeighbourConnectNotification h)

Cancel the request for opening a connection to the neighbour.

Parameters
hthe notification handle

Definition at line 1012 of file gnunet-service-testbed_links.c.

References cleanup_task, Neighbour::conn_op, GNUNET_assert, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_NO, GNUNET_SCHEDULER_cancel(), GNUNET_TESTBED_operation_inactivate_(), GNUNET_YES, Neighbour::inactive, NeighbourConnectNotification::n, Neighbour::nl_head, Neighbour::nl_tail, Neighbour::notify_task, Neighbour::reference_cnt, and trigger_notifications().

Referenced by cleanup_ncc(), and cleanup_occ_rp2c().

1013 {
1014  struct Neighbour *n;
1015  int cleanup_task;
1016 
1017  n = h->n;
1018  cleanup_task = (h == n->nl_head) ? GNUNET_YES : GNUNET_NO;
1020  GNUNET_free(h);
1021  if (GNUNET_NO == cleanup_task)
1022  return;
1023  if (NULL == n->notify_task)
1024  return;
1025  GNUNET_assert(0 < n->reference_cnt);
1026  n->reference_cnt--;
1028  n->notify_task = NULL;
1029  if (NULL == n->nl_head)
1030  {
1031  if ((0 == n->reference_cnt) && (0 == n->inactive))
1032  {
1033  n->inactive = 1;
1035  }
1036  return;
1037  }
1039 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
A connected controller which is not our child.
unsigned int inactive
Is the conn_op inactivated?
static struct GNUNET_SCHEDULER_Task * cleanup_task
Cleanup task.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_NO
Definition: gnunet_common.h:78
struct NeighbourConnectNotification * nl_tail
DLL tail for the list of notification requests.
struct GNUNET_TESTBED_Operation * conn_op
Operation handle for opening a lateral connection to another controller.
struct Neighbour * n
The neighbour.
unsigned int reference_cnt
How many references are present currently to this neighbour&#39;s connection.
struct NeighbourConnectNotification * nl_head
DLL head for the list of notification requests.
#define GNUNET_YES
Definition: gnunet_common.h:77
void GNUNET_TESTBED_operation_inactivate_(struct GNUNET_TESTBED_Operation *op)
Marks an active operation as inactive - the operation will be kept in a ready-to-be-released state an...
#define GNUNET_free(ptr)
Wrapper around free.
struct GNUNET_SCHEDULER_Task * notify_task
Task id for the task to call notifications from the notification list.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
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◆ GST_neighbour_release_connection()

void GST_neighbour_release_connection ( struct Neighbour n)

Release the connection to the neighbour.

The actual connection will be closed if connections to other neighbour are waiting (to maintain a bound on the total number of connections that are open).

Parameters
nthe neighbour whose connection can be closed

Definition at line 1050 of file gnunet-service-testbed_links.c.

References Neighbour::conn_op, GNUNET_assert, GNUNET_TESTBED_operation_inactivate_(), Neighbour::inactive, and Neighbour::reference_cnt.

Referenced by cleanup_occ_rp2c(), and neighbour_connect_cb().

1051 {
1052  GNUNET_assert(0 == n->inactive);
1053  GNUNET_assert(0 < n->reference_cnt);
1054  n->reference_cnt--;
1055  if (0 == n->reference_cnt)
1056  {
1057  n->inactive = 1;
1059  }
1060 }
unsigned int inactive
Is the conn_op inactivated?
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_TESTBED_Operation * conn_op
Operation handle for opening a lateral connection to another controller.
unsigned int reference_cnt
How many references are present currently to this neighbour&#39;s connection.
void GNUNET_TESTBED_operation_inactivate_(struct GNUNET_TESTBED_Operation *op)
Marks an active operation as inactive - the operation will be kept in a ready-to-be-released state an...
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◆ cleanup_ncc()

static void cleanup_ncc ( struct NeighbourConnectCtxt ncc)
static

Cleanup neighbour connect contexts.

Parameters
nccthe neighbour connect context to cleanup

Definition at line 1069 of file gnunet-service-testbed_links.c.

References GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_SCHEDULER_cancel(), GST_neighbour_get_connection_cancel(), NeighbourConnectCtxt::nh, and NeighbourConnectCtxt::timeout_task.

Referenced by GST_free_nccq(), GST_link_notify_disconnect(), neighbour_connect_cb(), and timeout_neighbour_connect().

1070 {
1071  if (NULL != ncc->nh)
1073  if (NULL != ncc->timeout_task)
1076  ncc_tail,
1077  ncc);
1078  GNUNET_free(ncc);
1079 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
struct GNUNET_SCHEDULER_Task * timeout_task
Task to be run upon timeout.
struct NeighbourConnectNotification * nh
The notification handle associated with the neighbour&#39;s connection request.
#define GNUNET_free(ptr)
Wrapper around free.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
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◆ GST_neighbour_list_clean()

void GST_neighbour_list_clean ( void  )

Cleans up the neighbour list.

Definition at line 1086 of file gnunet-service-testbed_links.c.

References Neighbour::conn_op, GNUNET_free, GNUNET_free_non_null, GNUNET_TESTBED_operation_release_(), id, and neighbour_list_size.

Referenced by shutdown_task().

1087 {
1088  struct Neighbour *n;
1089  unsigned int id;
1090 
1091  for (id = 0; id < neighbour_list_size; id++)
1092  {
1093  if (NULL == (n = neighbour_list[id]))
1094  continue;
1095  if (NULL != n->conn_op)
1097  GNUNET_free(n);
1098  neighbour_list[id] = NULL;
1099  }
1101 }
A connected controller which is not our child.
void GNUNET_TESTBED_operation_release_(struct GNUNET_TESTBED_Operation *op)
An operation is &#39;done&#39; (was cancelled or finished); remove it from the queues and release associated ...
static struct GNUNET_IDENTITY_Handle * id
Handle to identity service.
#define GNUNET_free_non_null(ptr)
Free the memory pointed to by ptr if ptr is not NULL.
struct GNUNET_TESTBED_Operation * conn_op
Operation handle for opening a lateral connection to another controller.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GST_get_neighbour()

struct Neighbour* GST_get_neighbour ( uint32_t  id)

Get a neighbour from the neighbour list.

Parameters
idthe index of the neighbour in the neighbour list
Returns
the Neighbour; NULL if the given index in invalid (index greater than the list size or neighbour at that index is NULL)

Definition at line 1112 of file gnunet-service-testbed_links.c.

References id, and neighbour_list_size.

Referenced by handle_overlay_connect().

1113 {
1114  if (neighbour_list_size <= id)
1115  return NULL;
1116  return neighbour_list[id];
1117 }
static struct GNUNET_IDENTITY_Handle * id
Handle to identity service.
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◆ GST_free_nccq()

void GST_free_nccq ( void  )

Function to cleanup the neighbour connect contexts.

Definition at line 1124 of file gnunet-service-testbed_links.c.

References cleanup_ncc().

Referenced by shutdown_task().

1125 {
1126  while (NULL != ncc_head)
1128 }
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◆ timeout_neighbour_connect()

static void timeout_neighbour_connect ( void *  cls)
static

Task to be run upon timeout while attempting to connect to the neighbour.

Parameters
clsthe NeighbourConnectCtxt created in GST_handle_link_controllers()

Definition at line 1137 of file gnunet-service-testbed_links.c.

References cleanup_ncc(), NeighbourConnectCtxt::client, NeighbourConnectCtxt::op_id, send_controller_link_response(), and NeighbourConnectCtxt::timeout_task.

Referenced by handle_link_controllers().

1138 {
1139  struct NeighbourConnectCtxt *ncc = cls;
1140 
1141  ncc->timeout_task = NULL;
1143  ncc->op_id,
1144  NULL,
1145  "Could not connect to delegated controller");
1146  cleanup_ncc(ncc);
1147 }
struct GNUNET_SCHEDULER_Task * timeout_task
Task to be run upon timeout.
Context information for establishing a link to neighbour (Used is GST_handle_link_controllers() ...
uint64_t op_id
The id of the link-controllers operation responsible for creating this context.
struct GNUNET_SERVICE_Client * client
The client requesting the connection.
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◆ neighbour_connect_cb()

static void neighbour_connect_cb ( void *  cls,
struct GNUNET_TESTBED_Controller c 
)
static

Callback called when a connection to the neighbour is made.

Parameters
clsthe NeighbourConnectCtxt created in GST_handle_link_controllers()
cthe handle the neighbour's controller

Definition at line 1157 of file gnunet-service-testbed_links.c.

References cleanup_ncc(), NeighbourConnectCtxt::client, GNUNET_SCHEDULER_cancel(), GST_neighbour_release_connection(), NeighbourConnectCtxt::n, NeighbourConnectCtxt::nh, NeighbourConnectCtxt::op_id, send_controller_link_response(), and NeighbourConnectCtxt::timeout_task.

Referenced by handle_link_controllers().

1159 {
1160  struct NeighbourConnectCtxt *ncc = cls;
1161 
1163  ncc->timeout_task = NULL;
1164  ncc->nh = NULL;
1167  ncc->op_id,
1168  NULL,
1169  NULL);
1170  cleanup_ncc(ncc);
1171 }
struct GNUNET_SCHEDULER_Task * timeout_task
Task to be run upon timeout.
Context information for establishing a link to neighbour (Used is GST_handle_link_controllers() ...
struct Neighbour * n
The neighbour to whom connection should be made.
struct NeighbourConnectNotification * nh
The notification handle associated with the neighbour&#39;s connection request.
uint64_t op_id
The id of the link-controllers operation responsible for creating this context.
struct GNUNET_SERVICE_Client * client
The client requesting the connection.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
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◆ GST_create_neighbour()

struct Neighbour* GST_create_neighbour ( struct GNUNET_TESTBED_Host host)

Function to create a neigbour and add it into the neighbour list.

Parameters
hostthe host of the neighbour

Definition at line 1180 of file gnunet-service-testbed_links.c.

References GNUNET_new, GNUNET_TESTBED_host_get_id_(), Neighbour::host_id, and neighbour_list_add().

Referenced by handle_link_controllers(), and handle_overlay_connect().

1181 {
1182  struct Neighbour *n;
1183 
1184  n = GNUNET_new(struct Neighbour);
1186  neighbour_list_add(n); /* just add; connect on-demand */
1187  return n;
1188 }
A connected controller which is not our child.
uint32_t host_id
The id of the host this controller is running on.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
uint32_t GNUNET_TESTBED_host_get_id_(const struct GNUNET_TESTBED_Host *host)
Obtain the host&#39;s unique global ID.
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◆ handle_link_controllers()

void handle_link_controllers ( void *  cls,
const struct GNUNET_TESTBED_ControllerLinkRequest msg 
)

Message handler for #GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS message.

Parameters
clsidentification of the client
msgthe actual message

Definition at line 1198 of file gnunet-service-testbed_links.c.

References LCFContext::client, LinkControllersContext::client, NeighbourConnectCtxt::client, Slave::controller_proc, LCFContext::delegated_host_id, GNUNET_TESTBED_ControllerLinkRequest::delegated_host_id, Route::dest, LCFContext::gateway, GNUNET_assert, GNUNET_break, GNUNET_break_op, GNUNET_CONTAINER_DLL_insert_tail, GNUNET_CONTAINER_multihashmap_create(), GNUNET_ERROR_TYPE_WARNING, GNUNET_new, GNUNET_NO, GNUNET_ntohll(), GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_add_now(), GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GNUNET_TESTBED_controller_start(), GST_context, GST_create_neighbour(), GST_find_dest_route(), GST_host_list, GST_host_list_size, GST_neighbour_get_connection(), GST_slave_list_size, GST_timeout, Slave::host_id, Context::host_id, INIT, LCFContext::is_subordinate, GNUNET_TESTBED_ControllerLinkRequest::is_subordinate, Slave::lcc, lcf_proc_task(), LOG, LOG_DEBUG, Context::master_ip, NeighbourConnectCtxt::n, neighbour_connect_cb(), neighbour_list_size, NeighbourConnectCtxt::nh, NeighbourConnectCtxt::op_id, LCFContext::operation_id, GNUNET_TESTBED_ControllerLinkRequest::operation_id, LinkControllersContext::operation_id, Slave::reghost_map, route_list_add(), route_list_size, LCFContext::slave_host_id, GNUNET_TESTBED_ControllerLinkRequest::slave_host_id, slave_list_add(), slave_status_cb(), LCFContext::state, Route::thru, timeout_neighbour_connect(), and NeighbourConnectCtxt::timeout_task.

1200 {
1201  struct GNUNET_SERVICE_Client *client = cls;
1202  struct LCFContext *lcf;
1203  struct Route *route;
1204  struct Route *new_route;
1205  uint64_t op_id;
1206  uint32_t delegated_host_id;
1207  uint32_t slave_host_id;
1208 
1209  if (NULL == GST_context)
1210  {
1211  GNUNET_break(0);
1213  return;
1214  }
1215  delegated_host_id = ntohl(msg->delegated_host_id);
1216  if (delegated_host_id == GST_context->host_id)
1217  {
1218  GNUNET_break(0);
1220  "Trying to link ourselves\n");
1222  return;
1223  }
1224  if ((delegated_host_id >= GST_host_list_size) ||
1225  (NULL == GST_host_list[delegated_host_id]))
1226  {
1228  "Delegated host %u not registered with us\n",
1229  delegated_host_id);
1231  return;
1232  }
1233  slave_host_id = ntohl(msg->slave_host_id);
1234  if ((slave_host_id >= GST_host_list_size) ||
1235  (NULL == GST_host_list[slave_host_id]))
1236  {
1238  "Slave host %u not registered with us\n",
1239  slave_host_id);
1241  return;
1242  }
1243  if (slave_host_id == delegated_host_id)
1244  {
1246  "Slave and delegated host are same\n");
1248  return;
1249  }
1250  op_id = GNUNET_ntohll(msg->operation_id);
1251  if (slave_host_id == GST_context->host_id) /* Link from us */
1252  {
1253  struct Slave *slave;
1254  struct LinkControllersContext *lcc;
1255 
1256  if (1 != msg->is_subordinate)
1257  {
1258  struct Neighbour *n;
1259  struct NeighbourConnectCtxt *ncc;
1260 
1261  if ((delegated_host_id < neighbour_list_size) &&
1262  (NULL != neighbour_list[delegated_host_id]))
1263  {
1264  GNUNET_break(0);
1266  return;
1267  }
1268  LOG_DEBUG("Received request to establish a link to host %u\n",
1269  delegated_host_id);
1270  n = GST_create_neighbour(GST_host_list[delegated_host_id]);
1271  ncc = GNUNET_new(struct NeighbourConnectCtxt);
1272  ncc->n = n;
1273  ncc->op_id = op_id;
1274  ncc->client = client;
1277  ncc);
1278  ncc->timeout_task
1281  ncc);
1283  ncc_tail,
1284  ncc);
1286  return;
1287  }
1288  if ((delegated_host_id < GST_slave_list_size) &&
1289  (NULL != GST_slave_list[delegated_host_id]))
1290  {
1291  GNUNET_break(0);
1293  return;
1294  }
1295  LOG_DEBUG("Received request to start and establish a link to host %u\n",
1296  delegated_host_id);
1297  slave = GNUNET_new(struct Slave);
1298  slave->host_id = delegated_host_id;
1300  GNUNET_NO);
1301  slave_list_add(slave);
1302  lcc = GNUNET_new(struct LinkControllersContext);
1303  lcc->operation_id = op_id;
1304  lcc->client = client;
1305  slave->lcc = lcc;
1306  slave->controller_proc
1308  GST_host_list[slave->host_id],
1309  &slave_status_cb,
1310  slave);
1311  new_route = GNUNET_new(struct Route);
1312  new_route->dest = delegated_host_id;
1313  new_route->thru = GST_context->host_id;
1314  route_list_add(new_route);
1315  return;
1316  }
1317 
1318  /* Route the request */
1319  if (slave_host_id >= route_list_size)
1320  {
1322  "No route towards slave host");
1324  return;
1325  }
1326  lcf = GNUNET_new(struct LCFContext);
1327  lcf->delegated_host_id = delegated_host_id;
1328  lcf->slave_host_id = slave_host_id;
1329  route = GST_find_dest_route(slave_host_id);
1330  GNUNET_assert(NULL != route); /* because we add routes carefully */
1332  GNUNET_assert(NULL != GST_slave_list[route->dest]);
1333  lcf->is_subordinate = msg->is_subordinate;
1334  lcf->state = INIT;
1335  lcf->operation_id = op_id;
1336  lcf->gateway = GST_slave_list[route->dest];
1337  lcf->client = client;
1338  if (NULL == lcf_head)
1339  {
1342  lcf_tail,
1343  lcf);
1345  lcf);
1346  }
1347  else
1348  {
1350  lcf_tail,
1351  lcf);
1352  }
1353  /* FIXME: Adding a new route should happen after the controllers are linked
1354  * successfully */
1355  if (1 != msg->is_subordinate)
1356  {
1358  return;
1359  }
1360  if ((delegated_host_id < route_list_size) &&
1361  (NULL != route_list[delegated_host_id]))
1362  {
1363  GNUNET_break_op(0); /* Are you trying to link delegated host twice
1364  * with is subordinate flag set to GNUNET_YES? */
1366  return;
1367  }
1368  new_route = GNUNET_new(struct Route);
1369  new_route->dest = delegated_host_id;
1370  new_route->thru = route->dest;
1371  route_list_add(new_route);
1373 }
struct GNUNET_CONTAINER_MultiHashMap * reghost_map
Hashmap to hold Registered host contexts.
struct GNUNET_SCHEDULER_Task * timeout_task
Task to be run upon timeout.
A connected controller which is not our child.
uint64_t operation_id
The id of the operation which created this context.
Context information for establishing a link to neighbour (Used is GST_handle_link_controllers() ...
unsigned int GST_host_list_size
The size of the host list.
struct Neighbour * n
The neighbour to whom connection should be made.
Link controllers request forwarding context.
uint32_t thru
The destination host is reachable thru.
struct NeighbourConnectNotification * nh
The notification handle associated with the neighbour&#39;s connection request.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
char * master_ip
The network address of the master controller.
int is_subordinate
should the slave controller start the delegated controller?
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_new(type)
Allocate a struct or union of the given type.
Structure representing a connected(directly-linked) controller.
enum LCFContextState state
The state of this context.
Context information used while linking controllers.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
struct Slave * gateway
The gateway which will pass the link message to delegated host.
Handle to a client that is connected to a service.
Definition: service.c:246
uint32_t delegated_host_id
For which host should requests be delegated? NBO.
Definition: testbed.h:142
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
uint32_t host_id
Our host id according to this context.
struct GNUNET_SERVICE_Client * client
The client which has asked to perform this operation.
#define GNUNET_break_op(cond)
Use this for assertion violations caused by other peers (i.e.
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_TESTBED_Host ** GST_host_list
Array of hosts.
A routing entry.
uint32_t delegated_host_id
The delegated host.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
struct GNUNET_TESTBED_ControllerProc * controller_proc
The controller process handle if we had started the controller.
uint64_t operation_id
The ID of the operation.
uint32_t slave_host_id
The slave host.
#define GNUNET_CONTAINER_DLL_insert_tail(head, tail, element)
Insert an element at the tail of a DLL.
struct LinkControllersContext * lcc
handle to lcc which is associated with this slave startup.
uint64_t op_id
The id of the link-controllers operation responsible for creating this context.
struct GNUNET_TIME_Relative GST_timeout
Timeout for operations which may take some time.
uint32_t slave_host_id
Which host is responsible for managing the delegation? NBO.
Definition: testbed.h:152
uint32_t host_id
The id of the host this controller is running on.
struct Context * GST_context
The master context; generated with the first INIT message.
struct GNUNET_SERVICE_Client * client
The client requesting the connection.
uint8_t is_subordinate
Set to 1 if the receiving controller is the master controller for the slave host (and thus responsibl...
Definition: testbed.h:158
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
uint64_t operation_id
The id of the operation which created this message.
Definition: testbed.h:147
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
uint32_t dest
destination host
#define LOG_DEBUG(...)
Debug logging shorthand.
struct GNUNET_TESTBED_ControllerProc * GNUNET_TESTBED_controller_start(const char *trusted_ip, struct GNUNET_TESTBED_Host *host, GNUNET_TESTBED_ControllerStatusCallback cb, void *cls)
Starts a controller process at the given host.
uint64_t GNUNET_ntohll(uint64_t n)
Convert unsigned 64-bit integer to host byte order.
Definition: common_endian.c:48
struct GNUNET_SERVICE_Client * client
The client which initiated the link controller operation.
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◆ GST_link_notify_disconnect()

void GST_link_notify_disconnect ( struct GNUNET_SERVICE_Client client)

Clean up client handle if we stored any via handle_link_controllers(), the given client disconnected.

Parameters
clientthe client that is history

Definition at line 1383 of file gnunet-service-testbed_links.c.

References cleanup_ncc(), LCFContext::client, LinkControllersContext::client, NeighbourConnectCtxt::client, drop_client_entries(), GNUNET_CONTAINER_DLL_remove, GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_free, GNUNET_TESTBED_operation_done(), GST_slave_list_size, Slave::lcc, LCFContext::next, NeighbourConnectCtxt::next, LCFContext::op, and Slave::reghost_map.

Referenced by client_disconnect_cb().

1384 {
1385  struct NeighbourConnectCtxt *ncc;
1386  struct NeighbourConnectCtxt *nccn;
1387  struct LCFContext *lcf;
1388  struct LCFContext *lcfn;
1389 
1390  for (ncc = ncc_head; NULL != ncc; ncc = nccn)
1391  {
1392  nccn = ncc->next;
1393  if (ncc->client == client)
1394  cleanup_ncc(ncc);
1395  }
1396  for (unsigned int i = 0; i < GST_slave_list_size; i++)
1397  {
1398  struct Slave *slave = GST_slave_list[i];
1399  struct LinkControllersContext *lcc;
1400 
1401  if (NULL == slave)
1402  continue;
1405  client);
1406  lcc = slave->lcc;
1407  if (NULL == lcc)
1408  continue;
1409  if (lcc->client == client)
1410  {
1411  slave->lcc = NULL;
1412  GNUNET_free(lcc);
1413  }
1414  }
1415  for (lcf = lcf_head; NULL != lcf; lcf = lcfn)
1416  {
1417  lcfn = lcf->next;
1418  if ((NULL != lcf) &&
1419  (client == lcf->client))
1420  {
1421  if (NULL != lcf->op)
1424  lcf_tail,
1425  lcf);
1426  GNUNET_free(lcf);
1427  }
1428  }
1429 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
struct GNUNET_CONTAINER_MultiHashMap * reghost_map
Hashmap to hold Registered host contexts.
Context information for establishing a link to neighbour (Used is GST_handle_link_controllers() ...
Link controllers request forwarding context.
struct GNUNET_TESTBED_Operation * op
Handle for operations which are forwarded while linking controllers.
Structure representing a connected(directly-linked) controller.
Context information used while linking controllers.
struct GNUNET_SERVICE_Client * client
The client which has asked to perform this operation.
void GNUNET_TESTBED_operation_done(struct GNUNET_TESTBED_Operation *operation)
This function is used to signal that the event information (struct GNUNET_TESTBED_EventInformation) f...
Definition: testbed_api.c:2037
struct LinkControllersContext * lcc
handle to lcc which is associated with this slave startup.
struct NeighbourConnectCtxt * next
DLL next for inclusion in the corresponding context list.
struct GNUNET_SERVICE_Client * client
The client requesting the connection.
int GNUNET_CONTAINER_multihashmap_iterate(struct GNUNET_CONTAINER_MultiHashMap *map, GNUNET_CONTAINER_MulitHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map.
struct LCFContext * next
The LCFContext.
#define GNUNET_free(ptr)
Wrapper around free.
struct GNUNET_SERVICE_Client * client
The client which initiated the link controller operation.
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◆ GST_free_lcf()

void GST_free_lcf ( void  )

Cleans up the queue used for forwarding link controllers requests.

Definition at line 1436 of file gnunet-service-testbed_links.c.

References GNUNET_assert, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_SCHEDULER_cancel(), GNUNET_TESTBED_operation_done(), lcf_head, LCFContext::op, and LCFContext::timeout_task.

Referenced by shutdown_task(), and slave_status_cb().

1437 {
1438  struct LCFContext *lcf;
1439 
1440  if (NULL != lcf_head)
1441  {
1442  if (NULL != lcf_proc_task_id)
1443  {
1445  lcf_proc_task_id = NULL;
1446  }
1447  }
1449  for (lcf = lcf_head; NULL != lcf; lcf = lcf_head)
1450  {
1451  if (NULL != lcf->op)
1453  if (NULL != lcf->timeout_task)
1456  lcf_tail,
1457  lcf);
1458  GNUNET_free(lcf);
1459  }
1460 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
Link controllers request forwarding context.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_TESTBED_Operation * op
Handle for operations which are forwarded while linking controllers.
void GNUNET_TESTBED_operation_done(struct GNUNET_TESTBED_Operation *operation)
This function is used to signal that the event information (struct GNUNET_TESTBED_EventInformation) f...
Definition: testbed_api.c:2037
struct GNUNET_SCHEDULER_Task * timeout_task
The timeout task.
#define GNUNET_free(ptr)
Wrapper around free.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
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Variable Documentation

◆ neighbour_list

struct Neighbour** neighbour_list
static

The neighbour list.

Definition at line 214 of file gnunet-service-testbed_links.c.

◆ neighbour_list_size

unsigned int neighbour_list_size
static

The size of the neighbour list.

Definition at line 219 of file gnunet-service-testbed_links.c.

Referenced by GST_get_neighbour(), GST_neighbour_list_clean(), handle_link_controllers(), and neighbour_list_add().

◆ ncc_head

struct NeighbourConnectCtxt* ncc_head

DLL head for the list of neighbour connect contexts.

Definition at line 267 of file gnunet-service-testbed_links.c.

◆ ncc_tail

struct NeighbourConnectCtxt* ncc_tail

DLL tail for the list of neighbour connect contexts.

Definition at line 272 of file gnunet-service-testbed_links.c.

◆ GST_slave_list

struct Slave** GST_slave_list

A list of directly linked neighbours.

Definition at line 277 of file gnunet-service-testbed_links.c.

Referenced by handle_barrier_init(), handle_peer_create(), handle_shutdown_peers(), and handle_slave_get_config().

◆ GST_slave_list_size

unsigned int GST_slave_list_size

◆ route_list

struct Route** route_list
static

A list of routes.

Definition at line 287 of file gnunet-service-testbed_links.c.

◆ lcf_head

struct LCFContext* lcf_head
static

The LCF queue.

Definition at line 292 of file gnunet-service-testbed_links.c.

Referenced by GST_free_lcf().

◆ lcf_tail

struct LCFContext* lcf_tail
static

The tail for the LCF queue.

Definition at line 297 of file gnunet-service-testbed_links.c.

◆ lcf_proc_task_id

struct GNUNET_SCHEDULER_Task* lcf_proc_task_id
static

The lcf_task handle.

Definition at line 302 of file gnunet-service-testbed_links.c.

◆ route_list_size

unsigned int route_list_size
static

The size of the route list.

Definition at line 307 of file gnunet-service-testbed_links.c.

Referenced by GST_find_dest_route(), GST_route_list_clear(), handle_link_controllers(), and route_list_add().