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authorTom Gundersen <teg@jklm.no>2014-07-25 14:44:12 +0200
committerTom Gundersen <teg@jklm.no>2014-07-28 10:44:51 +0200
commit0af03ba57f43b973463e15949c2830cbd228f19d (patch)
treea722f53dff27ef7b4b80e6ae2fae08b6118cb5d0 /src
parent076adf013a171e819f84684e2eb22e965e96ee59 (diff)
sd-dhcp-client: listen on UDP socket as soon as a lease is acquired
This is necessary in order to listen for FORCERENEW events.
Diffstat (limited to 'src')
-rw-r--r--src/libsystemd-network/sd-dhcp-client.c50
1 files changed, 35 insertions, 15 deletions
diff --git a/src/libsystemd-network/sd-dhcp-client.c b/src/libsystemd-network/sd-dhcp-client.c
index 1a60f4439a..68bce5e459 100644
--- a/src/libsystemd-network/sd-dhcp-client.c
+++ b/src/libsystemd-network/sd-dhcp-client.c
@@ -731,8 +731,8 @@ error:
return 0;
}
-static int client_initialize_events(sd_dhcp_client *client,
- sd_event_io_handler_t io_callback) {
+static int client_initialize_io_events(sd_dhcp_client *client,
+ sd_event_io_handler_t io_callback) {
int r;
assert(client);
@@ -749,6 +749,19 @@ static int client_initialize_events(sd_dhcp_client *client,
if (r < 0)
goto error;
+error:
+ if (r < 0)
+ client_stop(client, r);
+
+ return 0;
+}
+
+static int client_initialize_time_events(sd_dhcp_client *client) {
+ int r;
+
+ assert(client);
+ assert(client->event);
+
client->timeout_resend = sd_event_source_unref(client->timeout_resend);
r = sd_event_add_time(client->event,
@@ -770,6 +783,14 @@ error:
}
+static int client_initialize_events(sd_dhcp_client *client,
+ sd_event_io_handler_t io_callback) {
+ client_initialize_io_events(client, io_callback);
+ client_initialize_time_events(client);
+
+ return 0;
+}
+
static int client_start(sd_dhcp_client *client) {
int r;
@@ -846,16 +867,7 @@ static int client_timeout_t1(sd_event_source *s, uint64_t usec,
client->state = DHCP_STATE_RENEWING;
client->attempt = 1;
- r = dhcp_network_bind_udp_socket(client->lease->address,
- DHCP_PORT_CLIENT);
- if (r < 0) {
- log_dhcp_client(client, "could not bind UDP socket");
- return 0;
- }
-
- client->fd = r;
-
- return client_initialize_events(client, client_receive_message_udp);
+ return client_initialize_time_events(client);
}
static int client_handle_offer(sd_dhcp_client *client, DHCPMessage *offer,
@@ -1175,15 +1187,23 @@ static int client_handle_message(sd_dhcp_client *client, DHCPMessage *message,
if (r < 0)
goto error;
+ r = dhcp_network_bind_udp_socket(client->lease->address,
+ DHCP_PORT_CLIENT);
+ if (r < 0) {
+ log_dhcp_client(client, "could not bind UDP socket");
+ goto error;
+ }
+
+ client->fd = r;
+
+ client_initialize_io_events(client, client_receive_message_udp);
+
if (notify_event) {
client_notify(client, notify_event);
if (client->state == DHCP_STATE_STOPPED)
return 0;
}
- client->receive_message =
- sd_event_source_unref(client->receive_message);
- client->fd = asynchronous_close(client->fd);
} else if (r == -EADDRNOTAVAIL) {
/* got a NAK, let's restart the client */
client->timeout_resend =