9  * SPDX-License-Identifier: Apache-2.0
41  * seconds value internally for applicable options. These are also values
53 /* This is the upper bound on DESYNC_FACTOR. The value is in seconds.
63 #define DESYNC_FACTOR(ipv6) ((ipv6)->desync_factor)
67 /* The REGEN_ADVANCE is in seconds
139 	ARRAY_FOR_EACH(ipv6->unicast, i) {  in ipv6_pe_prefix_already_exists()
140 		if (!ipv6->unicast[i].is_used ||  in ipv6_pe_prefix_already_exists()
141 		    ipv6->unicast[i].address.family != AF_INET6 ||  in ipv6_pe_prefix_already_exists()
142 		    !ipv6->unicast[i].is_temporary ||  in ipv6_pe_prefix_already_exists()
143 		    ipv6->unicast[i].addr_state == NET_ADDR_DEPRECATED) {  in ipv6_pe_prefix_already_exists()
148 			    (uint8_t *)&ipv6->unicast[i].address.in6_addr,  in ipv6_pe_prefix_already_exists()
163 	ARRAY_FOR_EACH(ipv6->unicast, i) {  in ipv6_pe_prefix_remove()
164 		if (ipv6->unicast[i].is_used &&  in ipv6_pe_prefix_remove()
165 		    ipv6->unicast[i].address.family == AF_INET6 &&  in ipv6_pe_prefix_remove()
166 		    ipv6->unicast[i].is_temporary &&  in ipv6_pe_prefix_remove()
168 			    (uint8_t *)&ipv6->unicast[i].address.in6_addr,  in ipv6_pe_prefix_remove()
171 					    &ipv6->unicast[i].address.in6_addr);  in ipv6_pe_prefix_remove()
185 	ARRAY_FOR_EACH(ipv6->unicast, i) {  in ipv6_pe_prefix_update_lifetimes()
186 		if (!(ipv6->unicast[i].is_used &&  in ipv6_pe_prefix_update_lifetimes()
187 		      ipv6->unicast[i].address.family == AF_INET6 &&  in ipv6_pe_prefix_update_lifetimes()
188 		      ipv6->unicast[i].is_temporary &&  in ipv6_pe_prefix_update_lifetimes()
189 		      ipv6->unicast[i].addr_state == NET_ADDR_PREFERRED &&  in ipv6_pe_prefix_update_lifetimes()
191 			      (uint8_t *)&ipv6->unicast[i].address.in6_addr,  in ipv6_pe_prefix_update_lifetimes()
196 		addr_age = k_uptime_seconds() - ipv6->unicast[i].addr_create_time;  in ipv6_pe_prefix_update_lifetimes()
200 		    (new_age >= (TEMP_PREFERRED_LIFETIME -  in ipv6_pe_prefix_update_lifetimes()
205 		net_if_ipv6_addr_update_lifetime(&ipv6->unicast[i], vlifetime);  in ipv6_pe_prefix_update_lifetimes()
207 		/* RFC 8981 ch 3.5, "... at most one temporary address per  in ipv6_pe_prefix_update_lifetimes()
208 		 * prefix should be in a non-deprecated state at any given  in ipv6_pe_prefix_update_lifetimes()
250 	memcpy(buf.mac, net_if_get_link_addr(iface)->addr,  in gen_temporary_iid()
251 	       MIN(sizeof(buf.mac), net_if_get_link_addr(iface)->len));  in gen_temporary_iid()
338 				 TEMP_PREFERRED_LIFETIME -  in net_ipv6_pe_start()
341 	    preferred_lifetime <= REGEN_ADVANCE(ipv6->retrans_timer, 1U)) {  in net_ipv6_pe_start()
344 			REGEN_ADVANCE(ipv6->retrans_timer, 1U),  in net_ipv6_pe_start()
357 						    (iface->config.name,  in net_ipv6_pe_start()
358 						     sizeof(iface->config.name)),  in net_ipv6_pe_start()
359 						    (net_if_get_device(iface)->name,  in net_ipv6_pe_start()
360 						     strlen(net_if_get_device(iface)->name))),  in net_ipv6_pe_start()
382 		iface->pe_enabled = false;  in net_ipv6_pe_start()
396 	lifetime = TEMP_VALID_LIFETIME -  in net_ipv6_pe_start()
401 	/* Make sure that the address timeout happens at least two seconds  in net_ipv6_pe_start()
406 	ifaddr->is_temporary = true;  in net_ipv6_pe_start()
407 	ifaddr->addr_preferred_lifetime = preferred_lifetime;  in net_ipv6_pe_start()
408 	ifaddr->addr_timeout = ifaddr->addr_preferred_lifetime - DESYNC_FACTOR(ipv6);  in net_ipv6_pe_start()
409 	ifaddr->addr_create_time = k_uptime_seconds();  in net_ipv6_pe_start()
412 		lifetime, DESYNC_FACTOR(ipv6), ifaddr->addr_timeout,  in net_ipv6_pe_start()
413 		ifaddr->addr_preferred_lifetime, vlifetime);  in net_ipv6_pe_start()
420 	vlifetimeout = K_SECONDS(ifaddr->addr_timeout);  in net_ipv6_pe_start()
424 		NET_DBG("Next check for temp addresses in %d seconds",  in net_ipv6_pe_start()
425 			ifaddr->addr_timeout);  in net_ipv6_pe_start()
452 	ARRAY_FOR_EACH(ipv6->unicast, i) {  in iface_cb()
453 		if (!ipv6->unicast[i].is_used ||  in iface_cb()
454 		    ipv6->unicast[i].address.family != AF_INET6 ||  in iface_cb()
455 		    !ipv6->unicast[i].is_temporary) {  in iface_cb()
460 				(uint8_t *)&ipv6->unicast[i].address.in6_addr,  in iface_cb()
469 					    &ipv6->unicast[i].address.in6_addr);  in iface_cb()
474 					    &ipv6->unicast[i].address.in6_addr);  in iface_cb()
526 	int free_slot = -1;  in net_ipv6_pe_add_filter()
549 		ret = -EALREADY;  in net_ipv6_pe_add_filter()
555 		ret = -ENOMEM;  in net_ipv6_pe_add_filter()
582 	return -ENOTSUP;  in net_ipv6_pe_add_filter()
589 	int ret = -ENOENT;  in net_ipv6_pe_del_filter()
618 	return -ENOTSUP;  in net_ipv6_pe_del_filter()
671 					dw->iface, &dw->addr,  in send_deprecated_event()
688 	ARRAY_FOR_EACH(ipv6->unicast, i) {  in renewal_cb()
691 		if (!ipv6->unicast[i].is_used ||  in renewal_cb()
692 		    ipv6->unicast[i].address.family != AF_INET6 ||  in renewal_cb()
693 		    !ipv6->unicast[i].is_temporary ||  in renewal_cb()
694 		    ipv6->unicast[i].addr_state == NET_ADDR_DEPRECATED) {  in renewal_cb()
701 		diff = (int32_t)(ipv6->unicast[i].addr_create_time - k_uptime_seconds());  in renewal_cb()
704 		if (diff < (ipv6->unicast[i].addr_preferred_lifetime -  in renewal_cb()
705 			    REGEN_ADVANCE(ipv6->retrans_timer, 1U) -  in renewal_cb()
710 		net_ipaddr_copy(&prefix, &ipv6->unicast[i].address.in6_addr);  in renewal_cb()
711 		memset(prefix.s6_addr + 8, 0, sizeof(prefix) - 8);  in renewal_cb()
714 			net_sprint_ipv6_addr(&ipv6->unicast[i].address.in6_addr));  in renewal_cb()
716 		ipv6->unicast[i].addr_state = NET_ADDR_DEPRECATED;  in renewal_cb()
720 		 * re-connect to use the new address. We cannot send deprecated  in renewal_cb()
722 		 * and that takes a bit time.  in renewal_cb()
740 		       &ipv6->unicast[i].address.in6_addr,  in renewal_cb()
762 	lifetime = TEMP_VALID_LIFETIME -  in net_ipv6_pe_init()
766 		iface->pe_enabled = false;  in net_ipv6_pe_init()
768 		ret = -EINVAL;  in net_ipv6_pe_init()
772 	iface->pe_enabled = true;  in net_ipv6_pe_init()
773 	iface->pe_prefer_public =  in net_ipv6_pe_init()
783 		iface->pe_enabled ? "enabled" : "disabled",  in net_ipv6_pe_init()
784 		iface->pe_prefer_public ? "public" : "temporary",  in net_ipv6_pe_init()