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-rw-r--r--src/libsystemd-network/sd-dhcp-client.c57
1 files changed, 51 insertions, 6 deletions
diff --git a/src/libsystemd-network/sd-dhcp-client.c b/src/libsystemd-network/sd-dhcp-client.c
index 792e4af9c6..84111412d1 100644
--- a/src/libsystemd-network/sd-dhcp-client.c
+++ b/src/libsystemd-network/sd-dhcp-client.c
@@ -338,7 +338,17 @@ static int client_send_request(sd_dhcp_client *client, uint16_t secs) {
if (err < 0)
return err;
- if (client->state == DHCP_STATE_REQUESTING) {
+ switch (client->state) {
+
+ case DHCP_STATE_INIT_REBOOT:
+ err = dhcp_option_append(&opt, &optlen,
+ DHCP_OPTION_REQUESTED_IP_ADDRESS,
+ 4, &client->last_addr);
+ if (err < 0)
+ return err;
+ break;
+
+ case DHCP_STATE_REQUESTING:
err = dhcp_option_append(&opt, &optlen,
DHCP_OPTION_REQUESTED_IP_ADDRESS,
4, &client->lease->address);
@@ -350,6 +360,16 @@ static int client_send_request(sd_dhcp_client *client, uint16_t secs) {
4, &client->lease->server_address);
if (err < 0)
return err;
+ break;
+
+ case DHCP_STATE_INIT:
+ case DHCP_STATE_SELECTING:
+ case DHCP_STATE_REBOOTING:
+ case DHCP_STATE_BOUND:
+ case DHCP_STATE_RENEWING:
+ case DHCP_STATE_REBINDING:
+
+ break;
}
err = dhcp_option_append(&opt, &optlen, DHCP_OPTION_END, 0, NULL);
@@ -416,9 +436,15 @@ static int client_timeout_resend(sd_event_source *s, uint64_t usec,
next_timeout = time_now + time_left * USEC_PER_SEC;
break;
+ case DHCP_STATE_REBOOTING:
+ /* start over as we did not receive a timely ack or nak */
+ client->state = DHCP_STATE_INIT;
+ client->attempt = 1;
+ client->xid = random_u32();
+
+ /* fall through */
case DHCP_STATE_INIT:
case DHCP_STATE_INIT_REBOOT:
- case DHCP_STATE_REBOOTING:
case DHCP_STATE_SELECTING:
case DHCP_STATE_REQUESTING:
case DHCP_STATE_BOUND:
@@ -473,6 +499,7 @@ static int client_timeout_resend(sd_event_source *s, uint64_t usec,
break;
+ case DHCP_STATE_INIT_REBOOT:
case DHCP_STATE_REQUESTING:
case DHCP_STATE_RENEWING:
case DHCP_STATE_REBINDING:
@@ -480,11 +507,13 @@ static int client_timeout_resend(sd_event_source *s, uint64_t usec,
if (r < 0 && client->attempt >= 64)
goto error;
+ if (client->state == DHCP_STATE_INIT_REBOOT)
+ client->state = DHCP_STATE_REBOOTING;
+
client->request_sent = time_now;
break;
- case DHCP_STATE_INIT_REBOOT:
case DHCP_STATE_REBOOTING:
case DHCP_STATE_BOUND:
@@ -853,20 +882,37 @@ static int client_handle_message(sd_dhcp_client *client, DHCPMessage *message,
break;
+ case DHCP_STATE_REBOOTING:
case DHCP_STATE_REQUESTING:
case DHCP_STATE_RENEWING:
case DHCP_STATE_REBINDING:
r = client_handle_ack(client, message, len);
- if (r == DHCP_EVENT_NO_LEASE)
+ if (r == DHCP_EVENT_NO_LEASE) {
+
+ client->timeout_resend =
+ sd_event_source_unref(client->timeout_resend);
+
+ if (client->state == DHCP_STATE_REBOOTING) {
+ r = client_initialize(client);
+ if (r < 0)
+ goto error;
+
+ r = client_start(client);
+ if (r < 0)
+ goto error;
+ }
+
goto error;
+ }
if (r >= 0) {
client->timeout_resend =
sd_event_source_unref(client->timeout_resend);
- if (client->state == DHCP_STATE_REQUESTING)
+ if (IN_SET(client->state, DHCP_STATE_REQUESTING,
+ DHCP_STATE_REBOOTING))
notify_event = DHCP_EVENT_IP_ACQUIRE;
else if (r != DHCP_EVENT_IP_ACQUIRE)
notify_event = r;
@@ -894,7 +940,6 @@ static int client_handle_message(sd_dhcp_client *client, DHCPMessage *message,
case DHCP_STATE_INIT:
case DHCP_STATE_INIT_REBOOT:
- case DHCP_STATE_REBOOTING:
case DHCP_STATE_BOUND:
break;