/* Connect to zebra for nexthop lookup. */
static int zclient_lookup_connect(struct thread *t)
{
struct zclient *zlookup;
zlookup = THREAD_ARG(t);
zlookup->t_connect = NULL;
if (zlookup->sock >= 0) {
return 0;
}
if (zclient_socket_connect(zlookup) < 0) {
++zlookup->fail;
zlog_warn("%s: failure connecting zclient socket: failures=%d",
__PRETTY_FUNCTION__, zlookup->fail);
}
else {
zlookup->fail = 0; /* reset counter on connection */
}
zassert(!zlookup->t_connect);
if (zlookup->sock < 0) {
/* Since last connect failed, retry within 10 secs */
zclient_lookup_sched(zlookup, 10);
return -1;
}
return 0;
}
/* Make connection to zebra daemon. */
int
zclient_start (struct zclient *zclient)
{
int i;
if (zclient_debug)
zlog_debug ("zclient_start is called");
/* zclient is disabled. */
if (! zclient->enable)
return 0;
/* If already connected to the zebra. */
if (zclient->sock >= 0)
return 0;
/* Check connect thread. */
if (zclient->t_connect)
return 0;
if (zclient_socket_connect(zclient) < 0)
{
if (zclient_debug)
zlog_debug ("zclient connection fail");
zclient->fail++;
zclient_event (ZCLIENT_CONNECT, zclient);
return -1;
}
if (set_nonblocking(zclient->sock) < 0)
zlog_warn("%s: set_nonblocking(%d) failed", __func__, zclient->sock);
/* Clear fail count. */
zclient->fail = 0;
if (zclient_debug)
zlog_debug ("zclient connect success with socket [%d]", zclient->sock);
/* Create read thread. */
zclient_event (ZCLIENT_READ, zclient);
zebra_hello_send (zclient);
/* We need router-id information. */
zebra_message_send (zclient, ZEBRA_ROUTER_ID_ADD);
/* We need interface information. */
zebra_message_send (zclient, ZEBRA_INTERFACE_ADD);
/* Flush all redistribute request. */
for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
if (i != zclient->redist_default && zclient->redist[i])
zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, i);
/* If default information is needed. */
if (zclient->default_information)
zebra_message_send (zclient, ZEBRA_REDISTRIBUTE_DEFAULT_ADD);
return 0;
}
/* Make connection to zebra daemon. */
int
zclient_start (struct zclient *zclient)
{
if (zclient_debug)
zlog_debug ("zclient_start is called");
/* zclient is disabled. */
if (! zclient->enable)
return 0;
/* If already connected to the zebra. */
if (zclient->sock >= 0)
return 0;
/* Check connect thread. */
if (zclient->t_connect)
return 0;
/*
* If we fail to connect to the socket on initialization,
* Let's wait a second and see if we can reconnect.
* Cause if we don't connect, we never attempt to
* reconnect. On startup if zebra is slow we
* can get into this situation.
*/
while (zclient_socket_connect(zclient) < 0 && zclient->fail < 5)
{
if (zclient_debug)
zlog_debug ("zclient connection fail");
zclient->fail++;
sleep (1);
}
if (zclient->sock < 0)
{
zclient_event (ZCLIENT_CONNECT, zclient);
return -1;
}
if (set_nonblocking(zclient->sock) < 0)
zlog_warn("%s: set_nonblocking(%d) failed", __func__, zclient->sock);
/* Clear fail count. */
zclient->fail = 0;
if (zclient_debug)
zlog_debug ("zclient connect success with socket [%d]", zclient->sock);
/* Create read thread. */
zclient_event (ZCLIENT_READ, zclient);
zebra_hello_send (zclient);
/* Inform the successful connection. */
if (zclient->zebra_connected)
(*zclient->zebra_connected) (zclient);
return 0;
}
/* Connect to zebra for nexthop lookup. */
static int
zlookup_connect (struct thread *t)
{
struct zclient *zlookup;
zlookup = THREAD_ARG (t);
zlookup->t_connect = NULL;
if (zlookup->sock != -1)
return 0;
if (zclient_socket_connect (zlookup) < 0)
return -1;
return 0;
}
/* Make connection to zebra daemon. */
int
zclient_start (struct zclient *zclient)
{
if (zclient_debug)
zlog_debug ("zclient_start is called");
/* zclient is disabled. */
if (! zclient->enable)
return 0;
/* If already connected to the zebra. */
if (zclient->sock >= 0)
return 0;
/* Check connect thread. */
if (zclient->t_connect)
return 0;
if (zclient_socket_connect(zclient) < 0)
{
if (zclient_debug)
zlog_debug ("zclient connection fail");
zclient->fail++;
zclient_event (ZCLIENT_CONNECT, zclient);
return -1;
}
if (set_nonblocking(zclient->sock) < 0)
zlog_warn("%s: set_nonblocking(%d) failed", __func__, zclient->sock);
/* Clear fail count. */
zclient->fail = 0;
if (zclient_debug)
zlog_debug ("zclient connect success with socket [%d]", zclient->sock);
/* Create read thread. */
zclient_event (ZCLIENT_READ, zclient);
zebra_hello_send (zclient);
/* Inform the successful connection. */
if (zclient->zebra_connected)
(*zclient->zebra_connected) (zclient);
return 0;
}
