./move.sh

1 files changed, 255 insertions, 0 deletions

diff --git a/src/grp-network/networkd-dhcp6.c b/src/grp-network/networkd-dhcp6.c
new file mode 100644
index 0000000000..c5a3c52e94
--- /dev/null
+++ b/src/grp-network/networkd-dhcp6.c
@@ -0,0 +1,255 @@
+/***
+  This file is part of systemd.
+
+  Copyright (C) 2014 Intel Corporation. All rights reserved.
+
+  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>
+
+#include <systemd/sd-dhcp6-client.h>
+
+#include "network-internal.h"
+#include "networkd.h"
+
+static int dhcp6_lease_address_acquired(sd_dhcp6_client *client, Link *link);
+
+static int dhcp6_lease_information_acquired(sd_dhcp6_client *client,
+                                        Link *link) {
+        return 0;
+}
+
+static int dhcp6_address_handler(sd_netlink *rtnl, sd_netlink_message *m,
+                                 void *userdata) {
+        _cleanup_link_unref_ Link *link = userdata;
+        int r;
+
+        assert(link);
+
+        r = sd_netlink_message_get_errno(m);
+        if (r < 0 && r != -EEXIST) {
+                if (link->rtnl_extended_attrs) {
+                        log_link_warning(link, "Could not set extended netlink attributes, reverting to fallback mechanism");
+
+                        link->rtnl_extended_attrs = false;
+                        dhcp6_lease_address_acquired(link->dhcp6_client, link);
+
+                        return 1;
+                }
+
+                log_link_error_errno(link, r, "Could not set DHCPv6 address: %m");
+
+                link_enter_failed(link);
+
+        } else if (r >= 0)
+                manager_rtnl_process_address(rtnl, m, link->manager);
+
+        return 1;
+}
+
+static int dhcp6_address_change(Link *link, struct in6_addr *ip6_addr,
+                                uint32_t lifetime_preferred, uint32_t lifetime_valid) {
+        int r;
+        _cleanup_address_free_ Address *addr = NULL;
+
+        r = address_new(&addr);
+        if (r < 0)
+                return r;
+
+        addr->family = AF_INET6;
+        memcpy(&addr->in_addr.in6, ip6_addr, sizeof(*ip6_addr));
+
+        addr->flags = IFA_F_NOPREFIXROUTE;
+        addr->prefixlen = 128;
+
+        addr->cinfo.ifa_prefered = lifetime_preferred;
+        addr->cinfo.ifa_valid = lifetime_valid;
+
+        log_link_info(link,
+                      "DHCPv6 address "SD_NDISC_ADDRESS_FORMAT_STR"/%d timeout preferred %d valid %d",
+                      SD_NDISC_ADDRESS_FORMAT_VAL(addr->in_addr.in6),
+                      addr->prefixlen, lifetime_preferred, lifetime_valid);
+
+        r = address_configure(addr, link, dhcp6_address_handler, true);
+        if (r < 0)
+                log_link_warning_errno(link, r, "Could not assign DHCPv6 address: %m");
+
+        return r;
+}
+
+static int dhcp6_lease_address_acquired(sd_dhcp6_client *client, Link *link) {
+        int r;
+        sd_dhcp6_lease *lease;
+        struct in6_addr ip6_addr;
+        uint32_t lifetime_preferred, lifetime_valid;
+
+        r = sd_dhcp6_client_get_lease(client, &lease);
+        if (r < 0)
+                return r;
+
+        sd_dhcp6_lease_reset_address_iter(lease);
+
+        while (sd_dhcp6_lease_get_address(lease, &ip6_addr,
+                                                 &lifetime_preferred,
+                                                 &lifetime_valid) >= 0) {
+
+                r = dhcp6_address_change(link, &ip6_addr, lifetime_preferred, lifetime_valid);
+                if (r < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
+static void dhcp6_handler(sd_dhcp6_client *client, int event, void *userdata) {
+        int r;
+        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_DHCP6_CLIENT_EVENT_STOP:
+        case SD_DHCP6_CLIENT_EVENT_RESEND_EXPIRE:
+        case SD_DHCP6_CLIENT_EVENT_RETRANS_MAX:
+                if (sd_dhcp6_client_get_lease(client, NULL) >= 0)
+                        log_link_warning(link, "DHCPv6 lease lost");
+
+                link->dhcp6_configured = false;
+                break;
+
+        case SD_DHCP6_CLIENT_EVENT_IP_ACQUIRE:
+                r = dhcp6_lease_address_acquired(client, link);
+                if (r < 0) {
+                        link_enter_failed(link);
+                        return;
+                }
+
+                /* fall through */
+        case SD_DHCP6_CLIENT_EVENT_INFORMATION_REQUEST:
+                r = dhcp6_lease_information_acquired(client, link);
+                if (r < 0) {
+                        link_enter_failed(link);
+                        return;
+                }
+
+                link->dhcp6_configured = true;
+                break;
+
+        default:
+                if (event < 0)
+                        log_link_warning_errno(link, event, "DHCPv6 error: %m");
+                else
+                        log_link_warning(link, "DHCPv6 unknown event: %d", event);
+                return;
+        }
+
+        link_check_ready(link);
+}
+
+int dhcp6_request_address(Link *link) {
+        int r, inf_req;
+        bool running;
+
+        assert(link);
+        assert(link->dhcp6_client);
+
+        r = sd_dhcp6_client_get_information_request(link->dhcp6_client, &inf_req);
+        if (r < 0)
+                return r;
+
+        if (!inf_req)
+                return 0;
+
+        r = sd_dhcp6_client_is_running(link->dhcp6_client);
+        if (r < 0)
+                return r;
+        else
+                running = !!r;
+
+        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;
+
+        return 0;
+}
+
+int dhcp6_configure(Link *link) {
+        sd_dhcp6_client *client = NULL;
+        int r;
+        const DUID *duid;
+
+        assert(link);
+
+        if (link->dhcp6_client)
+                return 0;
+
+        r = sd_dhcp6_client_new(&client);
+        if (r < 0)
+                return r;
+
+        r = sd_dhcp6_client_attach_event(client, NULL, 0);
+        if (r < 0)
+                goto error;
+
+        r = sd_dhcp6_client_set_information_request(client, true);
+        if (r < 0)
+                goto error;
+
+        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_iaid(client, link->network->iaid);
+        if (r < 0)
+                goto error;
+
+        duid = link_duid(link);
+        r = sd_dhcp6_client_set_duid(client,
+                                     duid->type,
+                                     duid->raw_data_len > 0 ? duid->raw_data : NULL,
+                                     duid->raw_data_len);
+        if (r < 0)
+                goto error;
+
+        r = sd_dhcp6_client_set_index(client, link->ifindex);
+        if (r < 0)
+                goto error;
+
+        r = sd_dhcp6_client_set_callback(client, dhcp6_handler, link);
+        if (r < 0)
+                goto error;
+
+        link->dhcp6_client = client;
+
+        return 0;
+
+error:
+        sd_dhcp6_client_unref(client);
+        return r;
+}