+static bool
+parse_addr(struct interface *iface, const char *str, bool v6, int mask, bool ext)
+{
+ struct device_addr *addr;
+
+ addr = proto_parse_ip_addr_string(str, v6, mask);
+ if (!addr) {
+ interface_add_error(iface, "proto", "INVALID_ADDRESS", &str, 1);
+ return false;
+ }
+
+ if (ext)
+ addr->flags |= DEVADDR_EXTERNAL;
+
+ vlist_add(&iface->proto_ip.addr, &addr->node);
+ return true;
+}
+
+static int
+parse_address_option(struct interface *iface, struct blob_attr *attr, bool v6, int netmask, bool ext)
+{
+ struct blob_attr *cur;
+ int n_addr = 0;
+ int rem;
+
+ blobmsg_for_each_attr(cur, attr, rem) {
+ if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+ return -1;
+
+ n_addr++;
+ if (!parse_addr(iface, blobmsg_data(cur), v6, netmask, ext))
+ return -1;
+ }
+
+ return n_addr;
+}
+
+
+static bool
+parse_gateway_option(struct interface *iface, struct blob_attr *attr, bool v6)
+{
+ struct device_route *route;
+ const char *str = blobmsg_data(attr);
+ int af = v6 ? AF_INET6 : AF_INET;
+
+ route = calloc(1, sizeof(*route));
+ if (!inet_pton(af, str, &route->nexthop)) {
+ interface_add_error(iface, "proto", "INVALID_GATEWAY", &str, 1);
+ free(route);
+ return false;
+ }
+
+ route->mask = 0;
+ route->flags = DEVADDR_DEVICE | (v6 ? DEVADDR_INET6 : DEVADDR_INET4);
+ vlist_add(&iface->proto_ip.route, &route->node);
+
+ return true;
+}
+
+int
+proto_apply_ip_settings(struct interface *iface, struct blob_attr *attr, bool ext)
+{
+ struct blob_attr *tb[__OPT_MAX];
+ const char *error;
+ unsigned int netmask = 32;
+ int n_v4 = 0, n_v6 = 0;
+
+ blobmsg_parse(proto_ip_attributes, __OPT_MAX, tb, blob_data(attr), blob_len(attr));
+
+ if (tb[OPT_NETMASK]) {
+ netmask = parse_netmask_string(blobmsg_data(tb[OPT_NETMASK]), false);
+ if (netmask > 32) {
+ error = "INVALID_NETMASK";
+ goto error;
+ }
+ }
+
+ if (tb[OPT_IPADDR])
+ n_v4 = parse_address_option(iface, tb[OPT_IPADDR], false, netmask, ext);
+
+ if (tb[OPT_IP6ADDR])
+ n_v6 = parse_address_option(iface, tb[OPT_IP6ADDR], true, netmask, ext);
+
+ if (!n_v4 && !n_v6) {
+ error = "NO_ADDRESS";
+ goto error;
+ }
+
+ if (n_v4 < 0 || n_v6 < 0)
+ goto out;
+
+ if (n_v4 && tb[OPT_GATEWAY]) {
+ if (!parse_gateway_option(iface, tb[OPT_GATEWAY], false))
+ goto out;
+ }
+
+ if (n_v6 && tb[OPT_IP6GW]) {
+ if (!parse_gateway_option(iface, tb[OPT_IP6GW], true))
+ goto out;
+ }
+
+ if (tb[OPT_DNS])
+ interface_add_dns_server_list(&iface->proto_ip, tb[OPT_DNS]);
+
+ if (tb[OPT_DNS_SEARCH])
+ interface_add_dns_search_list(&iface->proto_ip, tb[OPT_DNS_SEARCH]);
+
+ return 0;
+
+error:
+ interface_add_error(iface, "proto", error, NULL, 0);
+out:
+ return -1;
+}