26 static bool link_dhcp4_server_enabled(Link *link) {  in link_dhcp4_server_enabled()  argument
27         assert(link);  in link_dhcp4_server_enabled()
29         if (link->flags & IFF_LOOPBACK)  in link_dhcp4_server_enabled()
32         if (!link->network)  in link_dhcp4_server_enabled()
35         if (link->iftype == ARPHRD_CAN)  in link_dhcp4_server_enabled()
38         return link->network->dhcp_server;  in link_dhcp4_server_enabled()
87 int link_request_dhcp_server_address(Link *link) {  in link_request_dhcp_server_address()  argument
92         assert(link);  in link_request_dhcp_server_address()
93         assert(link->network);  in link_request_dhcp_server_address()
95         if (!link_dhcp4_server_enabled(link))  in link_request_dhcp_server_address()
98         if (!in4_addr_is_set(&link->network->dhcp_server_address))  in link_request_dhcp_server_address()
107         address->in_addr.in = link->network->dhcp_server_address;  in link_request_dhcp_server_address()
108         address->prefixlen = link->network->dhcp_server_address_prefixlen;  in link_request_dhcp_server_address()
109         address_set_broadcast(address, link);  in link_request_dhcp_server_address()
111         if (address_get(link, address, &existing) >= 0 &&  in link_request_dhcp_server_address()
118         return link_request_static_address(link, TAKE_PTR(address), true);  in link_request_dhcp_server_address()
121 static int link_find_dhcp_server_address(Link *link, Address **ret) {  in link_find_dhcp_server_address()  argument
124         assert(link);  in link_find_dhcp_server_address()
125         assert(link->network);  in link_find_dhcp_server_address()
128         if (in4_addr_is_set(&link->network->dhcp_server_address))  in link_find_dhcp_server_address()
129                 return link_get_ipv4_address(link, &link->network->dhcp_server_address,  in link_find_dhcp_server_address()
130                                              link->network->dhcp_server_address_prefixlen, ret);  in link_find_dhcp_server_address()
133         SET_FOREACH(address, link->addresses) {  in link_find_dhcp_server_address()
154 static int dhcp_server_find_uplink(Link *link, Link **ret) {  in dhcp_server_find_uplink()  argument
155         assert(link);  in dhcp_server_find_uplink()
157         if (link->network->dhcp_server_uplink_name)  in dhcp_server_find_uplink()
158                 return link_get_by_name(link->manager, link->network->dhcp_server_uplink_name, ret);  in dhcp_server_find_uplink()
160         if (link->network->dhcp_server_uplink_index > 0)  in dhcp_server_find_uplink()
161 …             return link_get_by_index(link->manager, link->network->dhcp_server_uplink_index, ret);  in dhcp_server_find_uplink()
163         if (link->network->dhcp_server_uplink_index == UPLINK_INDEX_AUTO) {  in dhcp_server_find_uplink()
165                 if (manager_find_uplink(link->manager, AF_INET, link, ret) < 0)  in dhcp_server_find_uplink()
175                 Link *link,  in link_push_uplink_to_dhcp_server()  argument
183         assert(link);  in link_push_uplink_to_dhcp_server()
185         if (!link->network)  in link_push_uplink_to_dhcp_server()
187         assert(link->network);  in link_push_uplink_to_dhcp_server()
189         log_link_debug(link, "Copying %s from link", dhcp_lease_server_type_to_string(what));  in link_push_uplink_to_dhcp_server()
197                 for (unsigned i = 0; i < link->network->n_dns; i++) {  in link_push_uplink_to_dhcp_server()
201                         if (link->network->dns[i]->family != AF_INET)  in link_push_uplink_to_dhcp_server()
204                         ia = link->network->dns[i]->address.in;  in link_push_uplink_to_dhcp_server()
216                 use_dhcp_lease_data = link->network->dhcp_use_dns;  in link_push_uplink_to_dhcp_server()
223                 STRV_FOREACH(i, link->network->ntp) {  in link_push_uplink_to_dhcp_server()
239                 use_dhcp_lease_data = link->network->dhcp_use_ntp;  in link_push_uplink_to_dhcp_server()
246                 use_dhcp_lease_data = link->network->dhcp_use_sip;  in link_push_uplink_to_dhcp_server()
260         if (use_dhcp_lease_data && link->dhcp_lease) {  in link_push_uplink_to_dhcp_server()
263                 int n = sd_dhcp_lease_get_servers(link->dhcp_lease, what, &da);  in link_push_uplink_to_dhcp_server()
319 static int dhcp4_server_set_dns_from_resolve_conf(Link *link) {  in dhcp4_server_set_dns_from_resolve_conf()  argument
362         return sd_dhcp_server_set_dns(link->dhcp_server, addresses, n_addresses);  in dhcp4_server_set_dns_from_resolve_conf()
365 static int dhcp4_server_configure(Link *link) {  in dhcp4_server_configure()  argument
374         assert(link);  in dhcp4_server_configure()
376         log_link_debug(link, "Configuring DHCP Server.");  in dhcp4_server_configure()
378         if (link->dhcp_server)  in dhcp4_server_configure()
381         r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex);  in dhcp4_server_configure()
385         r = sd_dhcp_server_attach_event(link->dhcp_server, link->manager->event, 0);  in dhcp4_server_configure()
389         r = sd_dhcp_server_set_callback(link->dhcp_server, dhcp_server_callback, link);  in dhcp4_server_configure()
391 …   return log_link_warning_errno(link, r, "Failed to set callback for DHCPv4 server instance: %m");  in dhcp4_server_configure()
393         r = link_find_dhcp_server_address(link, &address);  in dhcp4_server_configure()
395 …return log_link_error_errno(link, r, "Failed to find suitable address for DHCPv4 server instance: …  in dhcp4_server_configure()
398 …     r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen,  in dhcp4_server_configure()
399 …                     link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size);  in dhcp4_server_configure()
401 …return log_link_error_errno(link, r, "Failed to configure address pool for DHCPv4 server instance:…  in dhcp4_server_configure()
403         if (link->network->dhcp_server_max_lease_time_usec > 0) {  in dhcp4_server_configure()
404                 r = sd_dhcp_server_set_max_lease_time(link->dhcp_server,  in dhcp4_server_configure()
405 …                       DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC));  in dhcp4_server_configure()
407 …return log_link_error_errno(link, r, "Failed to set maximum lease time for DHCPv4 server instance:…  in dhcp4_server_configure()
410         if (link->network->dhcp_server_default_lease_time_usec > 0) {  in dhcp4_server_configure()
411                 r = sd_dhcp_server_set_default_lease_time(link->dhcp_server,  in dhcp4_server_configure()
412 …                   DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC));  in dhcp4_server_configure()
414 …return log_link_error_errno(link, r, "Failed to set default lease time for DHCPv4 server instance:…  in dhcp4_server_configure()
417 …r = sd_dhcp_server_set_boot_server_address(link->dhcp_server, &link->network->dhcp_server_boot_ser…  in dhcp4_server_configure()
419 …return log_link_warning_errno(link, r, "Failed to set boot server address for DHCPv4 server instan…  in dhcp4_server_configure()
421 …r = sd_dhcp_server_set_boot_server_name(link->dhcp_server, link->network->dhcp_server_boot_server_…  in dhcp4_server_configure()
423 …return log_link_warning_errno(link, r, "Failed to set boot server name for DHCPv4 server instance:…  in dhcp4_server_configure()
425 … r = sd_dhcp_server_set_boot_filename(link->dhcp_server, link->network->dhcp_server_boot_filename);  in dhcp4_server_configure()
427 …return log_link_warning_errno(link, r, "Failed to set boot filename for DHCPv4 server instance: %m…  in dhcp4_server_configure()
431                 if (!link->network->dhcp_server_emit[type].emit)  in dhcp4_server_configure()
434                 if (link->network->dhcp_server_emit[type].n_addresses > 0)  in dhcp4_server_configure()
437                                         link->dhcp_server,  in dhcp4_server_configure()
439                                         link->network->dhcp_server_emit[type].addresses,  in dhcp4_server_configure()
440                                         link->network->dhcp_server_emit[type].n_addresses);  in dhcp4_server_configure()
444                                 (void) dhcp_server_find_uplink(link, &uplink);  in dhcp4_server_configure()
449 …                              r = link_push_uplink_to_dhcp_server(uplink, type, link->dhcp_server);  in dhcp4_server_configure()
451                                 r = dhcp4_server_set_dns_from_resolve_conf(link);  in dhcp4_server_configure()
453                                 log_link_debug(link,  in dhcp4_server_configure()
461                         log_link_warning_errno(link, r,  in dhcp4_server_configure()
466         if (link->network->dhcp_server_emit_router) {  in dhcp4_server_configure()
467 …              r = sd_dhcp_server_set_router(link->dhcp_server, &link->network->dhcp_server_router);  in dhcp4_server_configure()
469 …          return log_link_error_errno(link, r, "Failed to set router address for DHCP server: %m");  in dhcp4_server_configure()
472 …  r = sd_dhcp_server_set_relay_target(link->dhcp_server, &link->network->dhcp_server_relay_target);  in dhcp4_server_configure()
474 …            return log_link_error_errno(link, r, "Failed to set relay target for DHCP server: %m");  in dhcp4_server_configure()
476 …bind_to_interface = sd_dhcp_server_is_in_relay_mode(link->dhcp_server) ? false : link->network->dh…  in dhcp4_server_configure()
477         r = sd_dhcp_server_set_bind_to_interface(link->dhcp_server, bind_to_interface);  in dhcp4_server_configure()
479 …       return log_link_error_errno(link, r, "Failed to set interface binding for DHCP server: %m");  in dhcp4_server_configure()
481 …hcp_server_set_relay_agent_information(link->dhcp_server, link->network->dhcp_server_relay_agent_c…  in dhcp4_server_configure()
483 … return log_link_error_errno(link, r, "Failed to set agent circuit/remote id for DHCP server: %m");  in dhcp4_server_configure()
485         if (link->network->dhcp_server_emit_timezone) {  in dhcp4_server_configure()
489                 if (link->network->dhcp_server_timezone)  in dhcp4_server_configure()
490                         tz = link->network->dhcp_server_timezone;  in dhcp4_server_configure()
494 …         log_link_warning_errno(link, r, "Failed to determine timezone, not sending timezone: %m");  in dhcp4_server_configure()
500                         r = sd_dhcp_server_set_timezone(link->dhcp_server, tz);  in dhcp4_server_configure()
502 …                return log_link_error_errno(link, r, "Failed to set timezone for DHCP server: %m");  in dhcp4_server_configure()
506         ORDERED_HASHMAP_FOREACH(p, link->network->dhcp_server_send_options) {  in dhcp4_server_configure()
507                 r = sd_dhcp_server_add_option(link->dhcp_server, p);  in dhcp4_server_configure()
511                         return log_link_error_errno(link, r, "Failed to set DHCPv4 option: %m");  in dhcp4_server_configure()
514         ORDERED_HASHMAP_FOREACH(p, link->network->dhcp_server_send_vendor_options) {  in dhcp4_server_configure()
515                 r = sd_dhcp_server_add_vendor_option(link->dhcp_server, p);  in dhcp4_server_configure()
519                         return log_link_error_errno(link, r, "Failed to set DHCPv4 option: %m");  in dhcp4_server_configure()
522         HASHMAP_FOREACH(static_lease, link->network->dhcp_static_leases_by_section) {  in dhcp4_server_configure()
523 …r = sd_dhcp_server_set_static_lease(link->dhcp_server, &static_lease->address, static_lease->clien…  in dhcp4_server_configure()
525 …     return log_link_error_errno(link, r, "Failed to set DHCPv4 static lease for DHCP server: %m");  in dhcp4_server_configure()
528         r = sd_dhcp_server_start(link->dhcp_server);  in dhcp4_server_configure()
530                 return log_link_error_errno(link, r, "Could not start DHCPv4 server instance: %m");  in dhcp4_server_configure()
532         log_link_debug(link, "Offering DHCPv4 leases");  in dhcp4_server_configure()
536 static bool dhcp_server_is_ready_to_configure(Link *link) {  in dhcp_server_is_ready_to_configure()  argument
540         assert(link);  in dhcp_server_is_ready_to_configure()
542         if (!link->network)  in dhcp_server_is_ready_to_configure()
545         if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED))  in dhcp_server_is_ready_to_configure()
548         if (link->set_flags_messages > 0)  in dhcp_server_is_ready_to_configure()
551         if (!link_has_carrier(link))  in dhcp_server_is_ready_to_configure()
554         if (!link->static_addresses_configured)  in dhcp_server_is_ready_to_configure()
557         if (link_find_dhcp_server_address(link, &a) < 0)  in dhcp_server_is_ready_to_configure()
563         if (dhcp_server_find_uplink(link, &uplink) < 0)  in dhcp_server_is_ready_to_configure()
572 static int dhcp_server_process_request(Request *req, Link *link, void *userdata) {  in dhcp_server_process_request()  argument
575         assert(link);  in dhcp_server_process_request()
577         if (!dhcp_server_is_ready_to_configure(link))  in dhcp_server_process_request()
580         r = dhcp4_server_configure(link);  in dhcp_server_process_request()
582                 return log_link_warning_errno(link, r, "Failed to configure DHCP server: %m");  in dhcp_server_process_request()
587 int link_request_dhcp_server(Link *link) {  in link_request_dhcp_server()  argument
590         assert(link);  in link_request_dhcp_server()
592         if (!link_dhcp4_server_enabled(link))  in link_request_dhcp_server()
595         if (link->dhcp_server)  in link_request_dhcp_server()
598         log_link_debug(link, "Requesting DHCP server.");  in link_request_dhcp_server()
599         r = link_queue_request(link, REQUEST_TYPE_DHCP_SERVER, dhcp_server_process_request, NULL);  in link_request_dhcp_server()
601 …      return log_link_warning_errno(link, r, "Failed to request configuration of DHCP server: %m");  in link_request_dhcp_server()