/*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#define STATES \
STATE(VOID, 1 << 0) \
STATE(BACKOFF, 1 << 1) \
- STATE(CONNECT_IN_PROGRESS, 1 << 3) \
+ STATE(CONNECTING, 1 << 3) \
STATE(ACTIVE, 1 << 4) \
STATE(IDLE, 1 << 5) \
STATE(RECONNECT, 1 << 6) \
int backoff;
long long int last_received;
long long int last_connected;
+ long long int last_disconnected;
unsigned int max_tries;
/* These values are simply for statistics reporting, not otherwise used
fsm->state_entered = now;
fsm->backoff = 0;
fsm->last_received = now;
- fsm->last_connected = now;
+ fsm->last_connected = LLONG_MAX;
+ fsm->last_disconnected = LLONG_MAX;
fsm->max_tries = UINT_MAX;
fsm->creation_time = now;
fsm->passive = passive;
if (passive
- ? fsm->state & (S_CONNECT_IN_PROGRESS | S_RECONNECT)
+ ? fsm->state & (S_CONNECTING | S_RECONNECT)
: fsm->state == S_LISTENING && reconnect_may_retry(fsm)) {
reconnect_transition__(fsm, now, S_BACKOFF);
fsm->backoff = 0;
void
reconnect_force_reconnect(struct reconnect *fsm, long long int now)
{
- if (fsm->state & (S_CONNECT_IN_PROGRESS | S_ACTIVE | S_IDLE)) {
+ if (fsm->state & (S_CONNECTING | S_ACTIVE | S_IDLE)) {
reconnect_transition__(fsm, now, S_RECONNECT);
}
}
}
}
+ if (fsm->state & (S_ACTIVE | S_IDLE)) {
+ fsm->last_disconnected = now;
+ }
/* Back off. */
if (fsm->state & (S_ACTIVE | S_IDLE)
&& (fsm->last_received - fsm->last_connected >= fsm->backoff
void
reconnect_connecting(struct reconnect *fsm, long long int now)
{
- if (fsm->state != S_CONNECT_IN_PROGRESS) {
+ if (fsm->state != S_CONNECTING) {
if (fsm->passive) {
VLOG(fsm->info, "%s: listening...", fsm->name);
} else {
VLOG(fsm->info, "%s: connecting...", fsm->name);
}
- reconnect_transition__(fsm, now, S_CONNECT_IN_PROGRESS);
+ reconnect_transition__(fsm, now, S_CONNECTING);
}
}
reconnect_transition__(struct reconnect *fsm, long long int now,
enum state state)
{
- if (fsm->state == S_CONNECT_IN_PROGRESS) {
+ if (fsm->state == S_CONNECTING) {
fsm->n_attempted_connections++;
if (state == S_ACTIVE) {
fsm->n_successful_connections++;
case S_BACKOFF:
return fsm->state_entered + fsm->backoff;
- case S_CONNECT_IN_PROGRESS:
+ case S_CONNECTING:
return fsm->state_entered + MAX(1000, fsm->backoff);
case S_ACTIVE:
return LLONG_MAX;
case S_IDLE:
- return fsm->state_entered + fsm->probe_interval;
+ if (fsm->probe_interval) {
+ return fsm->state_entered + fsm->probe_interval;
+ }
+ return LLONG_MAX;
case S_RECONNECT:
return fsm->state_entered;
case S_BACKOFF:
return RECONNECT_CONNECT;
- case S_CONNECT_IN_PROGRESS:
+ case S_CONNECTING:
return RECONNECT_DISCONNECT;
case S_ACTIVE:
return is_connected_state(fsm->state);
}
-/* Returns the number of milliseconds for which 'fsm' has been continuously
- * connected to its peer. (If 'fsm' is not currently connected, this is 0.) */
+/* Returns the number of milliseconds since 'fsm' last successfully connected
+ * to its peer (even if it has since disconnected). Returns UINT_MAX if never
+ * connected. */
+unsigned int
+reconnect_get_last_connect_elapsed(const struct reconnect *fsm,
+ long long int now)
+{
+ return fsm->last_connected == LLONG_MAX ? UINT_MAX
+ : now - fsm->last_connected;
+}
+
+/* Returns the number of milliseconds since 'fsm' last disconnected
+ * from its peer (even if it has since reconnected). Returns UINT_MAX if never
+ * disconnected. */
unsigned int
-reconnect_get_connection_duration(const struct reconnect *fsm,
- long long int now)
+reconnect_get_last_disconnect_elapsed(const struct reconnect *fsm,
+ long long int now)
{
- return reconnect_is_connected(fsm) ? now - fsm->last_connected : 0;
+ return fsm->last_disconnected == LLONG_MAX ? UINT_MAX
+ : now - fsm->last_disconnected;
}
/* Copies various statistics for 'fsm' into '*stats'. */
stats->creation_time = fsm->creation_time;
stats->last_received = fsm->last_received;
stats->last_connected = fsm->last_connected;
+ stats->last_disconnected = fsm->last_disconnected;
stats->backoff = fsm->backoff;
stats->seqno = fsm->seqno;
stats->is_connected = reconnect_is_connected(fsm);
- stats->current_connection_duration
- = reconnect_get_connection_duration(fsm, now);
- stats->total_connected_duration = (stats->current_connection_duration
- + fsm->total_connected_duration);
+ stats->msec_since_connect
+ = reconnect_get_last_connect_elapsed(fsm, now);
+ stats->msec_since_disconnect
+ = reconnect_get_last_disconnect_elapsed(fsm, now);
+ stats->total_connected_duration = fsm->total_connected_duration
+ + (is_connected_state(fsm->state)
+ ? reconnect_get_last_connect_elapsed(fsm, now) : 0);
stats->n_attempted_connections = fsm->n_attempted_connections;
stats->n_successful_connections = fsm->n_successful_connections;
stats->state = reconnect_state_name__(fsm->state);