1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright (C) 2014 Intel Corporation. All rights reserved.
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include <netinet/ether.h>
25 #include "networkd-link.h"
26 #include "network-internal.h"
28 #include "sd-icmp6-nd.h"
29 #include "sd-dhcp6-client.h"
31 static void dhcp6_handler(sd_dhcp6_client *client, int event, void *userdata) {
32 Link *link = userdata;
35 assert(link->network);
36 assert(link->manager);
38 if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
42 case DHCP6_EVENT_STOP:
43 case DHCP6_EVENT_RESEND_EXPIRE:
44 case DHCP6_EVENT_RETRANS_MAX:
45 case DHCP6_EVENT_IP_ACQUIRE:
46 case DHCP6_EVENT_INFORMATION_REQUEST:
47 log_link_debug(link, "DHCPv6 event %d", event);
53 log_link_warning(link, "DHCPv6 error: %s",
56 log_link_warning(link, "DHCPv6 unknown event: %d",
62 static int dhcp6_configure(Link *link, int event) {
64 bool information_request;
66 assert_return(link, -EINVAL);
68 if (link->dhcp6_client) {
69 if (event != ICMP6_EVENT_ROUTER_ADVERTISMENT_MANAGED)
72 r = sd_dhcp6_client_get_information_request(link->dhcp6_client,
73 &information_request);
75 log_link_warning(link, "Could not get DHCPv6 Information request setting");
77 sd_dhcp6_client_unref(link->dhcp6_client);
81 if (!information_request)
84 r = sd_dhcp6_client_set_information_request(link->dhcp6_client,
87 log_link_warning(link, "Could not unset DHCPv6 Information request");
89 sd_dhcp6_client_unref(link->dhcp6_client);
93 r = sd_dhcp6_client_start(link->dhcp6_client);
95 log_link_warning(link, "Could not restart DHCPv6 after enabling Information request");
97 sd_dhcp6_client_unref(link->dhcp6_client);
104 r = sd_dhcp6_client_new(&link->dhcp6_client);
108 r = sd_dhcp6_client_attach_event(link->dhcp6_client, NULL, 0);
110 link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
114 r = sd_dhcp6_client_set_mac(link->dhcp6_client,
115 (const uint8_t *) &link->mac,
116 sizeof (link->mac), ARPHRD_ETHER);
118 link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
122 r = sd_dhcp6_client_set_index(link->dhcp6_client, link->ifindex);
124 link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
128 r = sd_dhcp6_client_set_callback(link->dhcp6_client, dhcp6_handler,
131 link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
135 if (event == ICMP6_EVENT_ROUTER_ADVERTISMENT_OTHER) {
136 r = sd_dhcp6_client_set_information_request(link->dhcp6_client,
140 sd_dhcp6_client_unref(link->dhcp6_client);
145 r = sd_dhcp6_client_start(link->dhcp6_client);
147 link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
152 static void icmp6_router_handler(sd_icmp6_nd *nd, int event, void *userdata) {
153 Link *link = userdata;
156 assert(link->network);
157 assert(link->manager);
159 if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
163 case ICMP6_EVENT_ROUTER_ADVERTISMENT_NONE:
166 case ICMP6_EVENT_ROUTER_ADVERTISMENT_TIMEOUT:
167 case ICMP6_EVENT_ROUTER_ADVERTISMENT_OTHER:
168 case ICMP6_EVENT_ROUTER_ADVERTISMENT_MANAGED:
173 log_link_warning(link, "ICMPv6 error: %s",
176 log_link_warning(link, "ICMPv6 unknown event: %d",
182 dhcp6_configure(link, event);
185 int icmp6_configure(Link *link) {
188 assert_return(link, -EINVAL);
190 r = sd_icmp6_nd_new(&link->icmp6_router_discovery);
194 r = sd_icmp6_nd_attach_event(link->icmp6_router_discovery, NULL, 0);
198 r = sd_icmp6_nd_set_mac(link->icmp6_router_discovery, &link->mac);
202 r = sd_icmp6_nd_set_index(link->icmp6_router_discovery, link->ifindex);
206 r = sd_icmp6_nd_set_callback(link->icmp6_router_discovery,
207 icmp6_router_handler, link);