/* SPDX-License-Identifier: LGPL-2.1+ */
-/***
- This file is part of systemd.
-
- Copyright 2013-2014 Tom Gundersen <teg@jklm.no>
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
#include <netinet/ether.h>
#include <linux/if.h>
static int dhcp4_route_handler(sd_netlink *rtnl, sd_netlink_message *m,
void *userdata) {
- _cleanup_link_unref_ Link *link = userdata;
+ _cleanup_(link_unrefp) Link *link = userdata;
int r;
assert(link);
return log_link_warning_errno(link, r, "DHCP error: could not get address: %m");
n = sd_dhcp_lease_get_routes(link->dhcp_lease, &static_routes);
- if (n < 0)
+ if (n == -ENODATA)
+ log_link_debug_errno(link, n, "DHCP: No routes received from DHCP server: %m");
+ else if (n < 0)
log_link_debug_errno(link, n, "DHCP error: could not get routes: %m");
for (i = 0; i < n; i++) {
}
for (i = 0; i < n; i++) {
- _cleanup_route_free_ Route *route = NULL;
+ _cleanup_(route_freep) Route *route = NULL;
/* if the DHCP server returns both a Classless Static Routes option and a Static Routes option,
the DHCP client MUST ignore the Static Routes option. */
r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway);
if (r == -ENODATA)
- log_link_info_errno(link, r, "DHCP: No routes received from DHCP server: %m");
+ log_link_info_errno(link, r, "DHCP: No gateway received from DHCP server: %m");
else if (r < 0)
log_link_warning_errno(link, r, "DHCP error: could not get gateway: %m");
log_link_warning(link, "Classless static routes received from DHCP server: ignoring static-route option and router option");
if (r >= 0 && !classless_route) {
- _cleanup_route_free_ Route *route = NULL;
- _cleanup_route_free_ Route *route_gw = NULL;
+ _cleanup_(route_freep) Route *route = NULL;
+ _cleanup_(route_freep) Route *route_gw = NULL;
r = route_new(&route);
if (r < 0)
}
static int dhcp_lease_lost(Link *link) {
- _cleanup_address_free_ Address *address = NULL;
+ _cleanup_(address_freep) Address *address = NULL;
struct in_addr addr;
struct in_addr netmask;
struct in_addr gateway;
n = sd_dhcp_lease_get_routes(link->dhcp_lease, &routes);
if (n >= 0) {
for (i = 0; i < n; i++) {
- _cleanup_route_free_ Route *route = NULL;
+ _cleanup_(route_freep) Route *route = NULL;
r = route_new(&route);
if (r >= 0) {
if (r >= 0) {
r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway);
if (r >= 0) {
- _cleanup_route_free_ Route *route_gw = NULL;
- _cleanup_route_free_ Route *route = NULL;
+ _cleanup_(route_freep) Route *route_gw = NULL;
+ _cleanup_(route_freep) Route *route = NULL;
r = route_new(&route_gw);
if (r >= 0) {
static int dhcp4_address_handler(sd_netlink *rtnl, sd_netlink_message *m,
void *userdata) {
- _cleanup_link_unref_ Link *link = userdata;
+ _cleanup_(link_unrefp) Link *link = userdata;
int r;
assert(link);
link_set_dhcp_routes(link);
+ if (link->dhcp4_messages == 0) {
+ link->dhcp4_configured = true;
+ link_check_ready(link);
+ }
+
return 1;
}
struct in_addr *address,
struct in_addr *netmask,
uint32_t lifetime) {
- _cleanup_address_free_ Address *addr = NULL;
+ _cleanup_(address_freep) Address *addr = NULL;
unsigned prefixlen;
int r;
ADDRESS_FMT_VAL(gateway)),
"ADDRESS=%u.%u.%u.%u", ADDRESS_FMT_VAL(address),
"PREFIXLEN=%u", prefixlen,
- "GATEWAY=%u.%u.%u.%u", ADDRESS_FMT_VAL(gateway),
- NULL);
+ "GATEWAY=%u.%u.%u.%u", ADDRESS_FMT_VAL(gateway));
else
log_struct(LOG_INFO,
LOG_LINK_INTERFACE(link),
ADDRESS_FMT_VAL(address),
prefixlen),
"ADDRESS=%u.%u.%u.%u", ADDRESS_FMT_VAL(address),
- "PREFIXLEN=%u", prefixlen,
- NULL);
+ "PREFIXLEN=%u", prefixlen);
link->dhcp_lease = sd_dhcp_lease_ref(lease);
link_dirty(link);
if (!link->dhcp_client) {
r = sd_dhcp_client_new(&link->dhcp_client, link->network->dhcp_anonymize);
+ if (r == -ENOMEM)
+ return log_oom();
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to create DHCP4 client: %m");
}
r = sd_dhcp_client_attach_event(link->dhcp_client, NULL, 0);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to attach event: %m");
r = sd_dhcp_client_set_mac(link->dhcp_client,
(const uint8_t *) &link->mac,
sizeof (link->mac), ARPHRD_ETHER);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set MAC address: %m");
r = sd_dhcp_client_set_ifindex(link->dhcp_client, link->ifindex);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set ifindex: %m");
r = sd_dhcp_client_set_callback(link->dhcp_client, dhcp4_handler, link);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set callback: %m");
r = sd_dhcp_client_set_request_broadcast(link->dhcp_client,
link->network->dhcp_broadcast);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set request flag for broadcast: %m");
if (link->mtu) {
r = sd_dhcp_client_set_mtu(link->dhcp_client, link->mtu);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set MTU: %m");
}
if (link->network->dhcp_use_mtu) {
r = sd_dhcp_client_set_request_option(link->dhcp_client,
SD_DHCP_OPTION_INTERFACE_MTU);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set request flag for MTU: %m");
}
/* NOTE: even if this variable is called "use", it also "sends" PRL
r = sd_dhcp_client_set_request_option(link->dhcp_client,
SD_DHCP_OPTION_STATIC_ROUTE);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set request flag for static route: %m");
+
r = sd_dhcp_client_set_request_option(link->dhcp_client,
SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set request flag for classless static route: %m");
}
if (link->network->dhcp_use_ntp) {
r = sd_dhcp_client_set_request_option(link->dhcp_client, SD_DHCP_OPTION_NTP_SERVER);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set request flag for NTP server: %m");
}
if (link->network->dhcp_use_timezone) {
r = sd_dhcp_client_set_request_option(link->dhcp_client, SD_DHCP_OPTION_NEW_TZDB_TIMEZONE);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set request flag for timezone: %m");
}
r = dhcp4_set_hostname(link);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set hostname: %m");
if (link->network->dhcp_vendor_class_identifier) {
r = sd_dhcp_client_set_vendor_class_identifier(link->dhcp_client,
link->network->dhcp_vendor_class_identifier);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set vendor class identifier: %m");
+ }
+
+ if (link->network->dhcp_user_class) {
+ r = sd_dhcp_client_set_user_class(link->dhcp_client, (const char **) link->network->dhcp_user_class);
+ if (r < 0)
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set user class: %m");
}
if (link->network->dhcp_client_port) {
r = sd_dhcp_client_set_client_port(link->dhcp_client, link->network->dhcp_client_port);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set listen port: %m");
}
switch (link->network->dhcp_client_identifier) {
duid->raw_data_len > 0 ? duid->raw_data : NULL,
duid->raw_data_len);
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set DUID: %m");
+ break;
+ }
+ case DHCP_CLIENT_ID_DUID_ONLY: {
+ /* If configured, apply user specified DUID */
+ const DUID *duid = link_duid(link);
+
+ r = sd_dhcp_client_set_duid(link->dhcp_client,
+ duid->type,
+ duid->raw_data_len > 0 ? duid->raw_data : NULL,
+ duid->raw_data_len);
+ if (r < 0)
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set DUID: %m");
break;
}
case DHCP_CLIENT_ID_MAC:
(const uint8_t *) &link->mac,
sizeof(link->mac));
if (r < 0)
- return r;
+ return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set client ID: %m");
break;
default:
assert_not_reached("Unknown client identifier type.");
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