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 = prefixlen; 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_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_icmp6_ra_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); if (r < 0) return r; log_link_struct(link, LOG_INFO, "MESSAGE=%-*s: IPv6 prefix "SD_ICMP6_ADDRESS_FORMAT_STR"/%d expired", IFNAMSIZ, link->ifname, SD_ICMP6_ADDRESS_FORMAT_VAL(*expired_prefix), expired_prefixlen, NULL); sd_dhcp6_lease_reset_address_iter(lease); while (sd_dhcp6_lease_get_address(lease, &ip6_addr, &lifetime_preferred, &lifetime_valid) >= 0) { r = sd_icmp6_prefix_match(expired_prefix, expired_prefixlen, &ip6_addr); if (r < 0) continue; log_link_struct(link, LOG_INFO, "MESSAGE=%-*s: IPv6 prefix length updated "SD_ICMP6_ADDRESS_FORMAT_STR"/%d", IFNAMSIZ, link->ifname, SD_ICMP6_ADDRESS_FORMAT_VAL(ip6_addr), 128, NULL); dhcp6_address_update(link, &ip6_addr, 128, lifetime_preferred, lifetime_valid); } return 0; }
static int dhcp_lease_acquired(sd_dhcp_client *client, Link *link) { sd_dhcp_lease *lease; struct in_addr address; struct in_addr netmask; struct in_addr gateway; unsigned prefixlen; uint32_t lifetime = CACHE_INFO_INFINITY_LIFE_TIME; int r; assert(client); assert(link); r = sd_dhcp_client_get_lease(client, &lease); if (r < 0) { log_link_warning(link, "DHCP error: no lease: %s", strerror(-r)); return r; } r = sd_dhcp_lease_get_address(lease, &address); if (r < 0) { log_link_warning(link, "DHCP error: no address: %s", strerror(-r)); return r; } r = sd_dhcp_lease_get_netmask(lease, &netmask); if (r < 0) { log_link_warning(link, "DHCP error: no netmask: %s", strerror(-r)); return r; } prefixlen = in_addr_netmask_to_prefixlen(&netmask); r = sd_dhcp_lease_get_router(lease, &gateway); if (r < 0 && r != -ENOENT) { log_link_warning(link, "DHCP error: could not get gateway: %s", strerror(-r)); return r; } if (r >= 0) log_link_struct(link, LOG_INFO, "MESSAGE=%-*s: DHCPv4 address %u.%u.%u.%u/%u via %u.%u.%u.%u", IFNAMSIZ, link->ifname, ADDRESS_FMT_VAL(address), prefixlen, 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); else log_link_struct(link, LOG_INFO, "MESSAGE=%-*s: DHCPv4 address %u.%u.%u.%u/%u", IFNAMSIZ, link->ifname, ADDRESS_FMT_VAL(address), prefixlen, "ADDRESS=%u.%u.%u.%u", ADDRESS_FMT_VAL(address), "PREFIXLEN=%u", prefixlen, NULL); link->dhcp_lease = lease; if (link->network->dhcp_mtu) { uint16_t mtu; r = sd_dhcp_lease_get_mtu(lease, &mtu); if (r >= 0) { r = link_set_mtu(link, mtu); if (r < 0) log_link_error(link, "Failed to set MTU " "to %" PRIu16, mtu); } } if (link->network->dhcp_hostname) { const char *hostname; r = sd_dhcp_lease_get_hostname(lease, &hostname); if (r >= 0) { r = link_set_hostname(link, hostname); if (r < 0) log_link_error(link, "Failed to set transient hostname to '%s'", hostname); } } if (!link->network->dhcp_critical) { r = sd_dhcp_lease_get_lifetime(link->dhcp_lease, &lifetime); if (r < 0) { log_link_warning(link, "DHCP error: no lifetime: %s", strerror(-r)); return r; } } r = dhcp4_update_address(link, &address, &netmask, lifetime); if (r < 0) { log_link_warning(link, "could not update IP address: %s", strerror(-r)); link_enter_failed(link); return r; } return 0; }