diff options
| -rw-r--r-- | src/network/networkd-dhcp6.c | 165 |
1 files changed, 159 insertions, 6 deletions
diff --git a/src/network/networkd-dhcp6.c b/src/network/networkd-dhcp6.c index c31bd4ec30..bcfad4c03f 100644 --- a/src/network/networkd-dhcp6.c +++ b/src/network/networkd-dhcp6.c @@ -28,7 +28,137 @@ #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->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; + + 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) { + r = dhcp6_address_update(link, &ip6_addr, 128, + lifetime_preferred, + lifetime_valid); + + return r; + } + } + + return 0; +} + +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); @@ -42,9 +172,23 @@ static void dhcp6_handler(sd_dhcp6_client *client, int event, void *userdata) { 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: - log_link_debug(link, "DHCPv6 event %d", event); + r = dhcp6_lease_information_acquired(client, link); + if (r < 0) { + link_enter_failed(link); + return; + } break; @@ -72,7 +216,8 @@ static int dhcp6_configure(Link *link, int event) { 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"); + 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; @@ -84,7 +229,8 @@ static int dhcp6_configure(Link *link, int event) { r = sd_dhcp6_client_set_information_request(link->dhcp6_client, false); if (r < 0) { - log_link_warning(link, "Could not unset DHCPv6 Information request"); + 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; @@ -92,7 +238,8 @@ static int dhcp6_configure(Link *link, int event) { r = sd_dhcp6_client_start(link->dhcp6_client); if (r < 0) { - log_link_warning(link, "Could not restart DHCPv6 after enabling Information request"); + 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; @@ -166,6 +313,13 @@ static void icmp6_router_handler(sd_icmp6_nd *nd, int event, void *userdata) { case ICMP6_EVENT_ROUTER_ADVERTISMENT_TIMEOUT: case ICMP6_EVENT_ROUTER_ADVERTISMENT_OTHER: case ICMP6_EVENT_ROUTER_ADVERTISMENT_MANAGED: + dhcp6_configure(link, event); + + break; + + case ICMP6_EVENT_ROUTER_ADVERTISMENT_PREFIX_EXPIRED: + dhcp6_prefix_expired(link); + break; default: @@ -176,10 +330,9 @@ static void icmp6_router_handler(sd_icmp6_nd *nd, int event, void *userdata) { log_link_warning(link, "ICMPv6 unknown event: %d", event); - return; + break; } - dhcp6_configure(link, event); } int icmp6_configure(Link *link) { |