-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
#include <netinet/ether.h>
#include <linux/if.h>
-#include "networkd-link.h"
-#include "network-internal.h"
-
-#include "sd-ndisc.h"
#include "sd-dhcp6-client.h"
+#include "network-internal.h"
+#include "networkd-link.h"
+
static int dhcp6_lease_address_acquired(sd_dhcp6_client *client, Link *link);
static int dhcp6_lease_information_acquired(sd_dhcp6_client *client,
}
static int dhcp6_address_change(Link *link, struct in6_addr *ip6_addr,
- uint8_t prefixlen, uint32_t lifetime_preferred,
- uint32_t lifetime_valid) {
+ uint32_t lifetime_preferred, uint32_t lifetime_valid) {
int r;
_cleanup_address_free_ Address *addr = NULL;
memcpy(&addr->in_addr.in6, ip6_addr, sizeof(*ip6_addr));
addr->flags = IFA_F_NOPREFIXROUTE;
- addr->prefixlen = prefixlen;
+ addr->prefixlen = 128;
addr->cinfo.ifa_prefered = lifetime_preferred;
addr->cinfo.ifa_valid = lifetime_valid;
sd_dhcp6_lease *lease;
struct in6_addr ip6_addr;
uint32_t lifetime_preferred, lifetime_valid;
- uint8_t prefixlen;
r = sd_dhcp6_client_get_lease(client, &lease);
if (r < 0)
&lifetime_preferred,
&lifetime_valid) >= 0) {
- r = sd_ndisc_get_prefixlen(link->icmp6_router_discovery,
- &ip6_addr, &prefixlen);
- if (r < 0 && r != -EADDRNOTAVAIL) {
- log_link_warning_errno(link, r, "Could not get prefix information: %m");
- return r;
- }
-
- if (r == -EADDRNOTAVAIL)
- prefixlen = 128;
-
- r = dhcp6_address_change(link, &ip6_addr, prefixlen,
- lifetime_preferred, lifetime_valid);
+ r = dhcp6_address_change(link, &ip6_addr, lifetime_preferred, lifetime_valid);
if (r < 0)
return r;
}
case SD_DHCP6_CLIENT_EVENT_STOP:
case SD_DHCP6_CLIENT_EVENT_RESEND_EXPIRE:
case SD_DHCP6_CLIENT_EVENT_RETRANS_MAX:
- log_link_warning(link, "DHCPv6 lease lost");
+ if (sd_dhcp6_client_get_lease(client, NULL) >= 0)
+ log_link_warning(link, "DHCPv6 lease lost");
link->dhcp6_configured = false;
break;
link_check_ready(link);
}
-static int dhcp6_configure(Link *link, int event) {
- int r;
- bool information_request;
+int dhcp6_request_address(Link *link) {
+ int r, inf_req;
+ bool running;
- assert_return(link, -EINVAL);
- assert_return(IN_SET(event, SD_NDISC_EVENT_ROUTER_ADVERTISMENT_TIMEOUT,
- SD_NDISC_EVENT_ROUTER_ADVERTISMENT_OTHER,
- SD_NDISC_EVENT_ROUTER_ADVERTISMENT_MANAGED), -EINVAL);
+ assert(link);
+ assert(link->dhcp6_client);
- link->dhcp6_configured = false;
+ r = sd_dhcp6_client_get_information_request(link->dhcp6_client, &inf_req);
+ if (r < 0)
+ return r;
- if (link->dhcp6_client) {
- r = sd_dhcp6_client_get_information_request(link->dhcp6_client,
- &information_request);
- if (r < 0) {
- log_link_warning_errno(link, r, "Could not get DHCPv6 Information request setting: %m");
- goto error;
- }
+ if (!inf_req)
+ return 0;
- if (information_request && event != SD_NDISC_EVENT_ROUTER_ADVERTISMENT_OTHER) {
- r = sd_dhcp6_client_stop(link->dhcp6_client);
- if (r < 0) {
- log_link_warning_errno(link, r, "Could not stop DHCPv6 while setting Managed mode: %m");
- goto error;
- }
+ r = sd_dhcp6_client_is_running(link->dhcp6_client);
+ if (r < 0)
+ return r;
+ else
+ running = !!r;
- r = sd_dhcp6_client_set_information_request(link->dhcp6_client,
- false);
- if (r < 0) {
- log_link_warning_errno(link, r, "Could not unset DHCPv6 Information request: %m");
- goto error;
- }
+ if (running) {
+ r = sd_dhcp6_client_stop(link->dhcp6_client);
+ if (r < 0)
+ return r;
+ }
- }
+ r = sd_dhcp6_client_set_information_request(link->dhcp6_client, false);
+ if (r < 0)
+ return r;
+ if (running) {
r = sd_dhcp6_client_start(link->dhcp6_client);
- if (r < 0 && r != -EALREADY) {
- log_link_warning_errno(link, r, "Could not restart DHCPv6: %m");
- goto error;
- }
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+int dhcp6_configure(Link *link) {
+ sd_dhcp6_client *client = NULL;
+ int r;
+
+ assert(link);
- if (r == -EALREADY)
- link->dhcp6_configured = true;
+ if (link->dhcp6_client)
+ return 0;
+ r = sd_dhcp6_client_new(&client);
+ if (r < 0)
return r;
- }
- r = sd_dhcp6_client_new(&link->dhcp6_client);
+ r = sd_dhcp6_client_attach_event(client, NULL, 0);
if (r < 0)
goto error;
- r = sd_dhcp6_client_attach_event(link->dhcp6_client, NULL, 0);
+ r = sd_dhcp6_client_set_information_request(client, true);
if (r < 0)
goto error;
- r = sd_dhcp6_client_set_mac(link->dhcp6_client,
+ r = sd_dhcp6_client_set_mac(client,
(const uint8_t *) &link->mac,
sizeof (link->mac), ARPHRD_ETHER);
if (r < 0)
goto error;
- r = sd_dhcp6_client_set_index(link->dhcp6_client, link->ifindex);
+ r = sd_dhcp6_client_set_iaid(client, link->network->iaid);
if (r < 0)
goto error;
- r = sd_dhcp6_client_set_callback(link->dhcp6_client, dhcp6_handler,
- link);
+ if (link->network->duid_type != _DUID_TYPE_INVALID)
+ r = sd_dhcp6_client_set_duid(client,
+ link->network->dhcp_duid_type,
+ link->network->dhcp_duid,
+ link->network->dhcp_duid_len);
+ else
+ r = sd_dhcp6_client_set_duid(client,
+ link->manager->dhcp_duid_type,
+ link->manager->dhcp_duid,
+ link->manager->dhcp_duid_len);
if (r < 0)
goto error;
- if (event == SD_NDISC_EVENT_ROUTER_ADVERTISMENT_OTHER) {
- r = sd_dhcp6_client_set_information_request(link->dhcp6_client,
- true);
- if (r < 0)
- goto error;
- }
-
- r = sd_dhcp6_client_start(link->dhcp6_client);
+ r = sd_dhcp6_client_set_index(client, link->ifindex);
if (r < 0)
goto error;
- return r;
-
- error:
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
- return r;
-}
-
-static int dhcp6_prefix_expired(Link *link) {
- int r;
- sd_dhcp6_lease *lease;
- struct in6_addr *expired_prefix, ip6_addr;
- uint8_t expired_prefixlen;
- uint32_t lifetime_preferred, lifetime_valid;
-
- r = sd_ndisc_get_expired_prefix(link->icmp6_router_discovery,
- &expired_prefix, &expired_prefixlen);
- if (r < 0)
- return r;
-
- r = sd_dhcp6_client_get_lease(link->dhcp6_client, &lease);
+ r = sd_dhcp6_client_set_callback(client, dhcp6_handler, link);
if (r < 0)
- return r;
-
- log_link_info(link, "IPv6 prefix "SD_NDISC_ADDRESS_FORMAT_STR"/%d expired",
- SD_NDISC_ADDRESS_FORMAT_VAL(*expired_prefix),
- expired_prefixlen);
-
- sd_dhcp6_lease_reset_address_iter(lease);
-
- while (sd_dhcp6_lease_get_address(lease, &ip6_addr,
- &lifetime_preferred,
- &lifetime_valid) >= 0) {
-
- r = sd_ndisc_prefix_match(expired_prefix, expired_prefixlen,
- &ip6_addr);
- if (r < 0)
- continue;
-
- log_link_info(link, "IPv6 prefix length updated "SD_NDISC_ADDRESS_FORMAT_STR"/%d", SD_NDISC_ADDRESS_FORMAT_VAL(ip6_addr), 128);
+ goto error;
- dhcp6_address_change(link, &ip6_addr, 128, lifetime_preferred, lifetime_valid);
- }
+ link->dhcp6_client = client;
return 0;
-}
-
-static void icmp6_router_handler(sd_ndisc *nd, int event, void *userdata) {
- Link *link = userdata;
-
- assert(link);
- assert(link->network);
- assert(link->manager);
-
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
- return;
-
- switch(event) {
- case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_NONE:
- return;
-
- case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_TIMEOUT:
- case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_OTHER:
- case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_MANAGED:
- dhcp6_configure(link, event);
-
- break;
-
- case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_PREFIX_EXPIRED:
- if (!link->rtnl_extended_attrs)
- dhcp6_prefix_expired(link);
-
- break;
-
- default:
- if (event < 0)
- log_link_warning_errno(link, event, "ICMPv6 error: %m");
- else
- log_link_warning(link, "ICMPv6 unknown event: %d", event);
-
- break;
- }
-
-}
-
-int icmp6_configure(Link *link) {
- int r;
-
- assert_return(link, -EINVAL);
-
- r = sd_ndisc_new(&link->icmp6_router_discovery);
- if (r < 0)
- return r;
-
- r = sd_ndisc_attach_event(link->icmp6_router_discovery, NULL, 0);
- if (r < 0)
- return r;
-
- r = sd_ndisc_set_mac(link->icmp6_router_discovery, &link->mac);
- if (r < 0)
- return r;
-
- r = sd_ndisc_set_index(link->icmp6_router_discovery, link->ifindex);
- if (r < 0)
- return r;
-
- r = sd_ndisc_set_callback(link->icmp6_router_discovery,
- icmp6_router_handler, link);
+error:
+ sd_dhcp6_client_unref(client);
return r;
}
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