54 bool link_radv_enabled(Link *link) {  in link_radv_enabled()  argument
55         assert(link);  in link_radv_enabled()
57         if (!link_may_have_ipv6ll(link))  in link_radv_enabled()
60         if (link->hw_addr.length != ETH_ALEN)  in link_radv_enabled()
63         return link->network->router_prefix_delegation;  in link_radv_enabled()
180 int link_request_radv_addresses(Link *link) {  in link_request_radv_addresses()  argument
184         assert(link);  in link_request_radv_addresses()
186         if (!link_radv_enabled(link))  in link_request_radv_addresses()
189         HASHMAP_FOREACH(p, link->network->prefixes_by_section) {  in link_request_radv_addresses()
200                 r = radv_generate_addresses(link, p->tokens, &p->prefix, p->prefixlen, &addresses);  in link_request_radv_addresses()
217                         r = link_request_static_address(link, TAKE_PTR(address), true);  in link_request_radv_addresses()
239 static int radv_set_prefix(Link *link, Prefix *prefix) {  in radv_set_prefix()  argument
243         assert(link);  in radv_set_prefix()
244         assert(link->radv);  in radv_set_prefix()
271         return sd_radv_add_prefix(link->radv, p);  in radv_set_prefix()
274 static int radv_set_route_prefix(Link *link, RoutePrefix *prefix) {  in radv_set_route_prefix()  argument
278         assert(link);  in radv_set_route_prefix()
279         assert(link->radv);  in radv_set_route_prefix()
294         return sd_radv_add_route_prefix(link->radv, p);  in radv_set_route_prefix()
330 static int radv_set_dns(Link *link, Link *uplink) {  in radv_set_dns()  argument
335         if (!link->network->router_emit_dns)  in radv_set_dns()
338         if (link->network->router_dns) {  in radv_set_dns()
341                 dns = new(struct in6_addr, link->network->n_router_dns);  in radv_set_dns()
346                 for (size_t i = 0; i < link->network->n_router_dns; i++)  in radv_set_dns()
347                         if (in6_addr_is_null(&link->network->router_dns[i])) {  in radv_set_dns()
348                                 if (in6_addr_is_set(&link->ipv6ll_address))  in radv_set_dns()
349                                         *(p++) = link->ipv6ll_address;  in radv_set_dns()
351                                 *(p++) = link->network->router_dns[i];  in radv_set_dns()
358         r = network_get_ipv6_dns(link->network, &dns, &n_dns);  in radv_set_dns()
373         return sd_radv_set_rdnss(link->radv,  in radv_set_dns()
374                                  usec_to_lifetime(link->network->router_dns_lifetime_usec),  in radv_set_dns()
378 static int radv_set_domains(Link *link, Link *uplink) {  in radv_set_domains()  argument
382         if (!link->network->router_emit_domains)  in radv_set_domains()
385         search_domains = link->network->router_search_domains;  in radv_set_domains()
390         search_domains = link->network->search_domains;  in radv_set_domains()
409         return sd_radv_set_dnssl(link->radv,  in radv_set_domains()
410                                  usec_to_lifetime(link->network->router_dns_lifetime_usec),  in radv_set_domains()
415 static int radv_find_uplink(Link *link, Link **ret) {  in radv_find_uplink()  argument
418         assert(link);  in radv_find_uplink()
420         if (link->network->router_uplink_name)  in radv_find_uplink()
421                 return link_get_by_name(link->manager, link->network->router_uplink_name, ret);  in radv_find_uplink()
423         if (link->network->router_uplink_index > 0)  in radv_find_uplink()
424                 return link_get_by_index(link->manager, link->network->router_uplink_index, ret);  in radv_find_uplink()
426         if (link->network->router_uplink_index == UPLINK_INDEX_AUTO) {  in radv_find_uplink()
427                 if (link_dhcp_pd_is_enabled(link))  in radv_find_uplink()
428 …                 r = dhcp_pd_find_uplink(link, ret); /* When DHCP-PD is enabled, use its uplink. */  in radv_find_uplink()
430                         r = manager_find_uplink(link->manager, AF_INET6, link, ret);  in radv_find_uplink()
441 static int radv_configure(Link *link) {  in radv_configure()  argument
447         assert(link);  in radv_configure()
448         assert(link->network);  in radv_configure()
450         if (link->radv)  in radv_configure()
453         r = sd_radv_new(&link->radv);  in radv_configure()
457         r = sd_radv_attach_event(link->radv, link->manager->event, 0);  in radv_configure()
461         r = sd_radv_set_mac(link->radv, &link->hw_addr.ether);  in radv_configure()
465         r = sd_radv_set_ifindex(link->radv, link->ifindex);  in radv_configure()
469         r = sd_radv_set_managed_information(link->radv, link->network->router_managed);  in radv_configure()
473         r = sd_radv_set_other_information(link->radv, link->network->router_other_information);  in radv_configure()
477         r = sd_radv_set_router_lifetime(link->radv, link->network->router_lifetime_usec);  in radv_configure()
481         if (link->network->router_lifetime_usec > 0) {  in radv_configure()
482                 r = sd_radv_set_preference(link->radv, link->network->router_preference);  in radv_configure()
487         HASHMAP_FOREACH(p, link->network->prefixes_by_section) {  in radv_configure()
488                 r = radv_set_prefix(link, p);  in radv_configure()
493         HASHMAP_FOREACH(q, link->network->route_prefixes_by_section) {  in radv_configure()
494                 r = radv_set_route_prefix(link, q);  in radv_configure()
499         (void) radv_find_uplink(link, &uplink);  in radv_configure()
501         r = radv_set_dns(link, uplink);  in radv_configure()
503                 return log_link_debug_errno(link, r, "Could not set RA DNS: %m");  in radv_configure()
505         r = radv_set_domains(link, uplink);  in radv_configure()
507                 return log_link_debug_errno(link, r, "Could not set RA Domains: %m");  in radv_configure()
512 int radv_update_mac(Link *link) {  in radv_update_mac()  argument
516         assert(link);  in radv_update_mac()
518         if (!link->radv)  in radv_update_mac()
521         restart = sd_radv_is_running(link->radv);  in radv_update_mac()
523         r = sd_radv_stop(link->radv);  in radv_update_mac()
527         r = sd_radv_set_mac(link->radv, &link->hw_addr.ether);  in radv_update_mac()
532                 r = sd_radv_start(link->radv);  in radv_update_mac()
540 static int radv_is_ready_to_configure(Link *link) {  in radv_is_ready_to_configure()  argument
544         assert(link);  in radv_is_ready_to_configure()
545         assert(link->network);  in radv_is_ready_to_configure()
547         if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED))  in radv_is_ready_to_configure()
550         if (in6_addr_is_null(&link->ipv6ll_address))  in radv_is_ready_to_configure()
553         if (link->hw_addr.length != ETH_ALEN || hw_addr_is_null(&link->hw_addr))  in radv_is_ready_to_configure()
556         if (link->network->router_emit_dns && !link->network->router_dns) {  in radv_is_ready_to_configure()
560                 r = network_get_ipv6_dns(link->network, &dns, &n_dns);  in radv_is_ready_to_configure()
567         if (link->network->router_emit_domains &&  in radv_is_ready_to_configure()
568             !link->network->router_search_domains &&  in radv_is_ready_to_configure()
569             !link->network->search_domains)  in radv_is_ready_to_configure()
575                 if (radv_find_uplink(link, &uplink) < 0)  in radv_is_ready_to_configure()
585 static int radv_process_request(Request *req, Link *link, void *userdata) {  in radv_process_request()  argument
588         assert(link);  in radv_process_request()
590         r = radv_is_ready_to_configure(link);  in radv_process_request()
594         r = radv_configure(link);  in radv_process_request()
596 …return log_link_warning_errno(link, r, "Failed to configure IPv6 Router Advertisement engine: %m");  in radv_process_request()
598         if (link_has_carrier(link)) {  in radv_process_request()
599                 r = radv_start(link);  in radv_process_request()
601 …    return log_link_warning_errno(link, r, "Failed to start IPv6 Router Advertisement engine: %m");  in radv_process_request()
604         log_link_debug(link, "IPv6 Router Advertisement engine is configured%s.",  in radv_process_request()
605                        link_has_carrier(link) ? " and started." : "");  in radv_process_request()
609 int link_request_radv(Link *link) {  in link_request_radv()  argument
612         assert(link);  in link_request_radv()
614         if (!link_radv_enabled(link))  in link_request_radv()
617         if (link->radv)  in link_request_radv()
620         r = link_queue_request(link, REQUEST_TYPE_RADV, radv_process_request, NULL);  in link_request_radv()
622 …return log_link_warning_errno(link, r, "Failed to request configuring of the IPv6 Router Advertise…  in link_request_radv()
624         log_link_debug(link, "Requested configuring of the IPv6 Router Advertisement engine.");  in link_request_radv()
628 int radv_start(Link *link) {  in radv_start()  argument
631         assert(link);  in radv_start()
632         assert(link->network);  in radv_start()
634         if (!link->radv)  in radv_start()
637         if (!link_has_carrier(link))  in radv_start()
640         if (in6_addr_is_null(&link->ipv6ll_address))  in radv_start()
643         if (sd_radv_is_running(link->radv))  in radv_start()
646         if (link->network->dhcp_pd_announce) {  in radv_start()
647                 r = dhcp_request_prefix_delegation(link);  in radv_start()
649 …        return log_link_debug_errno(link, r, "Failed to request DHCP delegated subnet prefix: %m");  in radv_start()
652         log_link_debug(link, "Starting IPv6 Router Advertisements");  in radv_start()
653         return sd_radv_start(link->radv);  in radv_start()
657                 Link *link,  in radv_add_prefix()  argument
666         assert(link);  in radv_add_prefix()
668         if (!link->radv)  in radv_add_prefix()
687         r = sd_radv_add_prefix(link->radv, p);  in radv_add_prefix()