+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- 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 "networkd-link.h"
-#include "network-internal.h"
-
-#include "sd-icmp6-nd.h"
-#include "sd-dhcp6-client.h"
-
-static int dhcp6_lease_information_acquired(sd_dhcp6_client *client,
- Link *link) {
- return 0;
-}
-
-static int dhcp6_address_handler(sd_rtnl *rtnl, sd_rtnl_message *m,
- void *userdata) {
- _cleanup_link_unref_ Link *link = userdata;
- int r;
-
- assert(link);
-
- r = sd_rtnl_message_get_errno(m);
- if (r < 0 && r != -EEXIST) {
- log_link_error(link, "Could not set DHCPv6 address: %s",
- strerror(-r));
-
- link_enter_failed(link);
-
- } else if (r >= 0)
- link_rtnl_process_address(rtnl, m, link->manager);
-
- return 1;
-}
-
-static int dhcp6_address_update(Link *link, struct in6_addr *ip6_addr,
- uint8_t prefixlen, uint32_t lifetime_preferred,
- uint32_t lifetime_valid) {
- int r;
- _cleanup_address_free_ Address *addr = NULL;
-
- r = address_new_dynamic(&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 = 64;
-
- addr->cinfo.ifa_prefered = lifetime_preferred;
- addr->cinfo.ifa_valid = lifetime_valid;
-
- log_link_struct(link, LOG_INFO, "MESSAGE=%-*s: DHCPv6 address "SD_ICMP6_ADDRESS_FORMAT_STR"/%d timeout preferred %d valid %d",
- IFNAMSIZ,
- link->ifname, SD_ICMP6_ADDRESS_FORMAT_VAL(addr->in_addr.in6),
- addr->prefixlen, lifetime_preferred, lifetime_valid,
- NULL);
-
- r = address_update(addr, link, dhcp6_address_handler);
- if (r < 0)
- log_link_warning(link, "Could not assign DHCPv6 address: %s",
- strerror(-r));
-
- 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;
- uint8_t prefixlen;
-
- 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 = sd_icmp6_ra_get_prefixlen(link->icmp6_router_discovery,
- &ip6_addr, &prefixlen);
- if (r < 0 && r != -EADDRNOTAVAIL) {
- log_link_warning(link, "Could not get prefix information: %s",
- strerror(-r));
- return r;
- }
-
- if (r == -EADDRNOTAVAIL)
- prefixlen = 128;
-
- r = dhcp6_address_update(link, &ip6_addr, prefixlen,
- 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 DHCP6_EVENT_STOP:
- case DHCP6_EVENT_RESEND_EXPIRE:
- case DHCP6_EVENT_RETRANS_MAX:
- log_link_debug(link, "DHCPv6 event %d", event);
- break;
-
- case DHCP6_EVENT_IP_ACQUIRE:
- r = dhcp6_lease_address_acquired(client, link);
- if (r < 0) {
- link_enter_failed(link);
- return;
- }
-
- /* fall through */
- case DHCP6_EVENT_INFORMATION_REQUEST:
- r = dhcp6_lease_information_acquired(client, link);
- if (r < 0) {
- link_enter_failed(link);
- return;
- }
-
- break;
-
- default:
- if (event < 0)
- log_link_warning(link, "DHCPv6 error: %s",
- strerror(-event));
- else
- log_link_warning(link, "DHCPv6 unknown event: %d",
- event);
- return;
- }
-}
-
-static int dhcp6_configure(Link *link, int event) {
- int r;
- bool information_request;
-
- assert_return(link, -EINVAL);
-
- if (link->dhcp6_client) {
- if (event != ICMP6_EVENT_ROUTER_ADVERTISMENT_MANAGED)
- return 0;
-
- 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;
- }
-
- if (!information_request)
- return r;
-
- 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;
- }
-
- return r;
- }
-
- r = sd_dhcp6_client_new(&link->dhcp6_client);
- if (r < 0)
- return r;
-
- 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;
- }
-
- 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;
- }
-
- 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;
- }
-
- 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 (event == ICMP6_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;
- }
- }
-
- r = sd_dhcp6_client_start(link->dhcp6_client);
- if (r < 0)
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
-
- return r;
-}
-
-static void icmp6_router_handler(sd_icmp6_nd *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 ICMP6_EVENT_ROUTER_ADVERTISMENT_NONE:
- case ICMP6_EVENT_ROUTER_ADVERTISMENT_PREFIX_EXPIRED:
- return;
-
- case ICMP6_EVENT_ROUTER_ADVERTISMENT_TIMEOUT:
- case ICMP6_EVENT_ROUTER_ADVERTISMENT_OTHER:
- case ICMP6_EVENT_ROUTER_ADVERTISMENT_MANAGED:
- dhcp6_configure(link, event);
-
- break;
-
- default:
- if (event < 0)
- log_link_warning(link, "ICMPv6 error: %s",
- strerror(-event));
- else
- log_link_warning(link, "ICMPv6 unknown event: %d",
- event);
-
- break;
- }
-
-}
-
-int icmp6_configure(Link *link) {
- int r;
-
- assert_return(link, -EINVAL);
-
- r = sd_icmp6_nd_new(&link->icmp6_router_discovery);
- if (r < 0)
- return r;
-
- r = sd_icmp6_nd_attach_event(link->icmp6_router_discovery, NULL, 0);
- if (r < 0)
- return r;
-
- r = sd_icmp6_nd_set_mac(link->icmp6_router_discovery, &link->mac);
- if (r < 0)
- return r;
-
- r = sd_icmp6_nd_set_index(link->icmp6_router_discovery, link->ifindex);
- if (r < 0)
- return r;
-
- r = sd_icmp6_nd_set_callback(link->icmp6_router_discovery,
- icmp6_router_handler, link);
-
- return r;
-}
~ianmdlvl / elogind.git / blobdiff