- route->family = AF_INET;
- route->scope = RT_SCOPE_LINK;
- route->metrics = 99;
-
- route_drop(route, link, &route_drop_handler);
- }
-
- return 0;
-}
-
-static int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) {
- struct in_addr address;
- int r;
-
- assert(ll);
- assert(link);
-
- r = sd_ipv4ll_get_address(ll, &address);
- if (r < 0)
- return r;
-
- log_struct_link(LOG_INFO, link,
- "MESSAGE=%-*s: IPv4 link-local address %u.%u.%u.%u",
- IFNAMSIZ,
- link->ifname,
- ADDRESS_FMT_VAL(address),
- NULL);
-
- link_enter_set_addresses(link);
-
- return 0;
-}
-
-static void ipv4ll_handler(sd_ipv4ll *ll, int event, void *userdata){
- Link *link = userdata;
- int r;
-
- assert(link);
- assert(link->network);
- assert(link->manager);
-
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
- return;
-
- switch(event) {
- case IPV4LL_EVENT_STOP:
- case IPV4LL_EVENT_CONFLICT:
- r = ipv4ll_address_lost(link);
- if (r < 0) {
- link_enter_failed(link);
- return;
- }
- break;
- case IPV4LL_EVENT_BIND:
- r = ipv4ll_address_claimed(ll, link);
- if (r < 0) {
- link_enter_failed(link);
- return;
- }
- break;
- default:
- if (event < 0)
- log_warning_link(link, "IPv4 link-local error: %s", strerror(-event));
- else
- log_warning_link(link, "IPv4 link-local unknown event: %d", event);
- break;
- }
-}
-
-static void dhcp6_handler(sd_dhcp6_client *client, 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 DHCP6_EVENT_STOP:
- case DHCP6_EVENT_RESEND_EXPIRE:
- case DHCP6_EVENT_RETRANS_MAX:
- case DHCP6_EVENT_IP_ACQUIRE:
- log_debug_link(link, "DHCPv6 event %d", event);
-
- break;
-
- default:
- if (event < 0)
- log_warning_link(link, "DHCPv6 error: %s",
- strerror(-event));
- else
- log_warning_link(link, "DHCPv6 unknown event: %d",
- event);
- return;
- }
-}
-
-static void icmp6_router_handler(sd_icmp6_nd *nd, int event, void *userdata) {
- Link *link = userdata;
- int r;
-
- 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_OTHER:
- return;
-
- case ICMP6_EVENT_ROUTER_ADVERTISMENT_TIMEOUT:
- case ICMP6_EVENT_ROUTER_ADVERTISMENT_MANAGED:
- break;
-
- default:
- if (event < 0)
- log_warning_link(link, "ICMPv6 error: %s",
- strerror(-event));
- else
- log_warning_link(link, "ICMPv6 unknown event: %d",
- event);
-
- return;
- }
-
- if (link->dhcp6_client)
- return;
-
- r = sd_dhcp6_client_new(&link->dhcp6_client);
- if (r < 0)
- return;
-
- 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 = sd_dhcp6_client_set_mac(link->dhcp6_client, &link->mac);
- if (r < 0) {
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
- return;
- }
-
- 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 = 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 = sd_dhcp6_client_start(link->dhcp6_client);
- if (r < 0)
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
-}
-
-static int link_acquire_conf(Link *link) {
- int r;
-
- assert(link);
- assert(link->network);
- assert(link->manager);
- assert(link->manager->event);
-
- if (link->network->ipv4ll) {
- assert(link->ipv4ll);
-
- log_debug_link(link, "acquiring IPv4 link-local address");
-
- r = sd_ipv4ll_start(link->ipv4ll);
- if (r < 0) {
- log_warning_link(link, "could not acquire IPv4 "
- "link-local address");
- return r;
- }
- }
-
- if (IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V4)) {
- assert(link->dhcp_client);
-
- log_debug_link(link, "acquiring DHCPv4 lease");
-
- r = sd_dhcp_client_start(link->dhcp_client);
- if (r < 0) {
- log_warning_link(link, "could not acquire DHCPv4 "
- "lease");
- return r;
- }
- }
-
- if (IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V6)) {
- assert(link->icmp6_router_discovery);
-
- log_debug_link(link, "discovering IPv6 routers");
-
- r = sd_icmp6_router_solicitation_start(link->icmp6_router_discovery);
- if (r < 0) {
- log_warning_link(link, "could not start IPv6 router discovery");
- return r;
- }
- }
-
- return 0;
-}
-
-bool link_has_carrier(unsigned flags, uint8_t operstate) {
- /* see Documentation/networking/operstates.txt in the kernel sources */
-
- if (operstate == IF_OPER_UP)
- return true;
-
- if (operstate == IF_OPER_UNKNOWN)
- /* operstate may not be implemented, so fall back to flags */
- if ((flags & IFF_LOWER_UP) && !(flags & IFF_DORMANT))
- return true;
-
- return false;
-}
-
-#define FLAG_STRING(string, flag, old, new) \
- (((old ^ new) & flag) \
- ? ((old & flag) ? (" -" string) : (" +" string)) \
- : "")
-
-static int link_update_flags(Link *link, sd_rtnl_message *m) {
- unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags;
- uint8_t operstate;
- bool carrier_gained = false, carrier_lost = false;
- int r;
-
- assert(link);
-
- r = sd_rtnl_message_link_get_flags(m, &flags);
- if (r < 0) {
- log_warning_link(link, "Could not get link flags");
- return r;
- }
-
- r = sd_rtnl_message_read_u8(m, IFLA_OPERSTATE, &operstate);
- if (r < 0)
- /* if we got a message without operstate, take it to mean
- the state was unchanged */
- operstate = link->kernel_operstate;
-
- if ((link->flags == flags) && (link->kernel_operstate == operstate))
- return 0;
-
- if (link->flags != flags) {
- log_debug_link(link, "flags change:%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
- FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags),
- FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags),
- FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags),
- FLAG_STRING("UP", IFF_UP, link->flags, flags),
- FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags),
- FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags),
- FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags),
- FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags),
- FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags),
- FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags),
- FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags),
- FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags),
- FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags),
- FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags),
- FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags),
- FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags),
- FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags),
- FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags),
- FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags));
-
- unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP |
- IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING |
- IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT |
- IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL |
- IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP |
- IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO);
- unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags);
- unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags);