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-rw-r--r--src/libsystemd-network/sd-dhcp6-client.c35
-rw-r--r--src/libsystemd-network/test-dhcp6-client.c4
-rw-r--r--src/network/networkd-dhcp6.c98
-rw-r--r--src/network/networkd-link.c3
-rw-r--r--src/network/networkd-link.h1
5 files changed, 81 insertions, 60 deletions
diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
index 2367509693..acb31a16c2 100644
--- a/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -125,6 +125,8 @@ int sd_dhcp6_client_set_index(sd_dhcp6_client *client, int interface_index) {
assert_return(client, -EINVAL);
assert_return(interface_index >= -1, -EINVAL);
+ assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY);
+
client->index = interface_index;
return 0;
@@ -140,6 +142,8 @@ int sd_dhcp6_client_set_mac(
assert_return(addr_len > 0 && addr_len <= MAX_MAC_ADDR_LEN, -EINVAL);
assert_return(arp_type > 0, -EINVAL);
+ assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY);
+
if (arp_type == ARPHRD_ETHER)
assert_return(addr_len == ETH_ALEN, -EINVAL);
else if (arp_type == ARPHRD_INFINIBAND)
@@ -173,6 +177,8 @@ int sd_dhcp6_client_set_duid(
assert_return(duid, -EINVAL);
assert_return(duid_len > 0 && duid_len <= MAX_DUID_LEN, -EINVAL);
+ assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY);
+
switch (type) {
case DHCP6_DUID_LLT:
if (duid_len <= sizeof(client->duid.llt))
@@ -205,6 +211,8 @@ int sd_dhcp6_client_set_duid(
int sd_dhcp6_client_set_information_request(sd_dhcp6_client *client, bool enabled) {
assert_return(client, -EINVAL);
+ assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY);
+
client->information_request = enabled;
return 0;
@@ -266,13 +274,18 @@ static void client_notify(sd_dhcp6_client *client, int event) {
client->cb(client, event, client->userdata);
}
-static int client_reset(sd_dhcp6_client *client) {
- assert_return(client, -EINVAL);
-
+static void client_set_lease(sd_dhcp6_client *client, sd_dhcp6_lease *lease) {
if (client->lease) {
dhcp6_lease_clear_timers(&client->lease->ia);
- client->lease = sd_dhcp6_lease_unref(client->lease);
+ sd_dhcp6_lease_unref(client->lease);
}
+ client->lease = lease;
+}
+
+static int client_reset(sd_dhcp6_client *client) {
+ assert_return(client, -EINVAL);
+
+ client_set_lease(client, NULL);
client->receive_message =
sd_event_source_unref(client->receive_message);
@@ -826,12 +839,7 @@ static int client_receive_reply(sd_dhcp6_client *client, DHCP6Message *reply, si
return 0;
}
- if (client->lease) {
- dhcp6_lease_clear_timers(&client->lease->ia);
- client->lease = sd_dhcp6_lease_unref(client->lease);
- }
-
- client->lease = lease;
+ client_set_lease(client, lease);
lease = NULL;
return DHCP6_STATE_BOUND;
@@ -860,8 +868,7 @@ static int client_receive_advertise(sd_dhcp6_client *client, DHCP6Message *adver
r = dhcp6_lease_get_preference(client->lease, &pref_lease);
if (r < 0 || pref_advertise > pref_lease) {
- sd_dhcp6_lease_unref(client->lease);
- client->lease = lease;
+ client_set_lease(client, lease);
lease = NULL;
r = 0;
}
@@ -1126,6 +1133,9 @@ int sd_dhcp6_client_start(sd_dhcp6_client *client) {
assert_return(client->event, -EINVAL);
assert_return(client->index > 0, -EINVAL);
+ if (!IN_SET(client->state, DHCP6_STATE_STOPPED))
+ return -EALREADY;
+
r = client_reset(client);
if (r < 0)
return r;
@@ -1233,7 +1243,6 @@ sd_dhcp6_client *sd_dhcp6_client_unref(sd_dhcp6_client *client) {
client_reset(client);
sd_dhcp6_client_detach_event(client);
- sd_dhcp6_lease_unref(client->lease);
free(client->req_opts);
free(client);
diff --git a/src/libsystemd-network/test-dhcp6-client.c b/src/libsystemd-network/test-dhcp6-client.c
index 178f536337..0c131a9897 100644
--- a/src/libsystemd-network/test-dhcp6-client.c
+++ b/src/libsystemd-network/test-dhcp6-client.c
@@ -581,7 +581,11 @@ static void test_client_information_cb(sd_dhcp6_client *client, int event,
if (verbose)
printf(" got DHCPv6 event %d\n", event);
+ assert_se(sd_dhcp6_client_set_information_request(client, false) == -EBUSY);
+ assert_se(sd_dhcp6_client_set_callback(client, NULL, e) >= 0);
+ assert_se(sd_dhcp6_client_stop(client) >= 0);
assert_se(sd_dhcp6_client_set_information_request(client, false) >= 0);
+
assert_se(sd_dhcp6_client_set_callback(client,
test_client_solicit_cb, e) >= 0);
diff --git a/src/network/networkd-dhcp6.c b/src/network/networkd-dhcp6.c
index fca73b3154..13105c7865 100644
--- a/src/network/networkd-dhcp6.c
+++ b/src/network/networkd-dhcp6.c
@@ -147,7 +147,9 @@ static void dhcp6_handler(sd_dhcp6_client *client, int event, void *userdata) {
case SD_DHCP6_CLIENT_EVENT_STOP:
case SD_DHCP6_CLIENT_EVENT_RESEND_EXPIRE:
case SD_DHCP6_CLIENT_EVENT_RETRANS_MAX:
- log_link_debug(link, "DHCPv6 event %d", event);
+ log_link_warning(link, "DHCPv6 lease lost");
+
+ link->dhcp6_configured = false;
break;
case SD_DHCP6_CLIENT_EVENT_IP_ACQUIRE:
@@ -165,6 +167,7 @@ static void dhcp6_handler(sd_dhcp6_client *client, int event, void *userdata) {
return;
}
+ link->dhcp6_configured = true;
break;
default:
@@ -176,6 +179,8 @@ static void dhcp6_handler(sd_dhcp6_client *client, int event, void *userdata) {
event);
return;
}
+
+ link_client_handler(link);
}
static int dhcp6_configure(Link *link, int event) {
@@ -183,91 +188,90 @@ static int dhcp6_configure(Link *link, int event) {
bool information_request;
assert_return(link, -EINVAL);
+ assert_return(IN_SET(event, SD_ICMP6_ND_EVENT_ROUTER_ADVERTISMENT_TIMEOUT,
+ SD_ICMP6_ND_EVENT_ROUTER_ADVERTISMENT_OTHER,
+ SD_ICMP6_ND_EVENT_ROUTER_ADVERTISMENT_MANAGED), -EINVAL);
- if (link->dhcp6_client) {
- if (event != SD_ICMP6_ND_EVENT_ROUTER_ADVERTISMENT_MANAGED)
- return 0;
+ link->dhcp6_configured = false;
+ if (link->dhcp6_client) {
r = sd_dhcp6_client_get_information_request(link->dhcp6_client,
&information_request);
if (r < 0) {
log_link_warning(link, "Could not get DHCPv6 Information request setting: %s",
- strerror(-r));
- link->dhcp6_client =
- sd_dhcp6_client_unref(link->dhcp6_client);
- return r;
+ strerror(-r));
+ goto error;
}
- if (!information_request)
- return r;
+ if (information_request && event != SD_ICMP6_ND_EVENT_ROUTER_ADVERTISMENT_OTHER) {
+ r = sd_dhcp6_client_stop(link->dhcp6_client);
+ if (r < 0) {
+ log_link_warning(link, "Could not stop DHCPv6 while setting Managed mode %s",
+ strerror(-r));
+ goto error;
+ }
+
+ r = sd_dhcp6_client_set_information_request(link->dhcp6_client,
+ false);
+ if (r < 0) {
+ log_link_warning(link, "Could not unset DHCPv6 Information request: %s",
+ strerror(-r));
+ goto error;
+ }
- r = sd_dhcp6_client_set_information_request(link->dhcp6_client,
- false);
- if (r < 0) {
- log_link_warning(link, "Could not unset DHCPv6 Information request: %s",
- strerror(-r));
- link->dhcp6_client =
- sd_dhcp6_client_unref(link->dhcp6_client);
- return r;
}
r = sd_dhcp6_client_start(link->dhcp6_client);
- if (r < 0) {
- log_link_warning(link, "Could not restart DHCPv6 after enabling Information request: %s",
- strerror(-r));
- link->dhcp6_client =
- sd_dhcp6_client_unref(link->dhcp6_client);
- return r;
+ if (r < 0 && r != -EALREADY) {
+ log_link_warning(link, "Could not restart DHCPv6: %s",
+ strerror(-r));
+ goto error;
}
+ if (r == -EALREADY)
+ link->dhcp6_configured = true;
+
return r;
}
r = sd_dhcp6_client_new(&link->dhcp6_client);
if (r < 0)
- return r;
+ goto error;
r = sd_dhcp6_client_attach_event(link->dhcp6_client, NULL, 0);
- if (r < 0) {
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
- return r;
- }
+ if (r < 0)
+ goto error;
r = sd_dhcp6_client_set_mac(link->dhcp6_client,
(const uint8_t *) &link->mac,
sizeof (link->mac), ARPHRD_ETHER);
- if (r < 0) {
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
- return r;
- }
+ if (r < 0)
+ goto error;
r = sd_dhcp6_client_set_index(link->dhcp6_client, link->ifindex);
- if (r < 0) {
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
- return r;
- }
+ if (r < 0)
+ goto error;
r = sd_dhcp6_client_set_callback(link->dhcp6_client, dhcp6_handler,
link);
- if (r < 0) {
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
- return r;
- }
+ if (r < 0)
+ goto error;
if (event == SD_ICMP6_ND_EVENT_ROUTER_ADVERTISMENT_OTHER) {
r = sd_dhcp6_client_set_information_request(link->dhcp6_client,
true);
- if (r < 0) {
- link->dhcp6_client =
- sd_dhcp6_client_unref(link->dhcp6_client);
- return r;
- }
+ if (r < 0)
+ goto error;
}
r = sd_dhcp6_client_start(link->dhcp6_client);
if (r < 0)
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
+ goto error;
+
+ return r;
+ error:
+ link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
return r;
}
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 05a1358eca..5dd14b1104 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -504,6 +504,9 @@ void link_client_handler(Link *link) {
if (link_dhcp4_enabled(link) && !link->dhcp4_configured)
return;
+ if (link_dhcp6_enabled(link) && !link->dhcp6_configured)
+ return;
+
if (link->state != LINK_STATE_CONFIGURED)
link_enter_configured(link);
diff --git a/src/network/networkd-link.h b/src/network/networkd-link.h
index f588faf209..7b219c6854 100644
--- a/src/network/networkd-link.h
+++ b/src/network/networkd-link.h
@@ -91,6 +91,7 @@ struct Link {
uint16_t original_mtu;
unsigned dhcp4_messages;
bool dhcp4_configured;
+ bool dhcp6_configured;
sd_ipv4ll *ipv4ll;
bool ipv4ll_address;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-14 10:23:22 +0000