Improved IPv6 featureset

[project/netifd.git] / interface-ip.c

diff --git a/interface-ip.c b/interface-ip.c
index 6906d62..df2904f 100644 (file)
--- a/interface-ip.c
+++ b/interface-ip.c
@@ -33,6 +33,7 @@ enum {
        ROUTE_GATEWAY,
        ROUTE_METRIC,
        ROUTE_MTU,
+       ROUTE_VALID,
        __ROUTE_MAX
 };
 
@@ -43,6 +44,7 @@ static const struct blobmsg_policy route_attr[__ROUTE_MAX] = {
        [ROUTE_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
        [ROUTE_METRIC] = { .name = "metric", .type = BLOBMSG_TYPE_INT32 },
        [ROUTE_MTU] = { .name = "mtu", .type = BLOBMSG_TYPE_INT32 },
+       [ROUTE_VALID] = { .name = "valid", .type = BLOBMSG_TYPE_INT32 },
 };
 
 const struct config_param_list route_attr_list = {
@@ -53,6 +55,7 @@ const struct config_param_list route_attr_list = {
 
 struct list_head prefixes = LIST_HEAD_INIT(prefixes);
 static struct device_prefix *ula_prefix = NULL;
+static struct uloop_timeout valid_until_timeout;
 
 
 static void
@@ -248,6 +251,9 @@ interface_ip_add_route(struct interface *iface, struct blob_attr *attr, bool v6)
                route->flags |= DEVROUTE_MTU;
        }
 
+       if ((cur = tb[ROUTE_VALID]) != NULL)
+               route->valid_until = system_get_rtime() + blobmsg_get_u32(cur);
+
        vlist_add(&ip->route, &route->node, &route->flags);
        return;
 
@@ -293,11 +299,14 @@ interface_handle_subnet_route(struct interface *iface, struct device_addr *addr,
                route.flags |= DEVADDR_KERNEL;
                system_del_route(dev, &route);
 
-               route.flags &= ~DEVADDR_KERNEL;
-               route.metric = iface->metric;
-               system_add_route(dev, &route);
+               if (!(addr->flags & DEVADDR_OFFLINK)) {
+                       route.flags &= ~DEVADDR_KERNEL;
+                       route.metric = iface->metric;
+                       system_add_route(dev, &route);
+               }
        } else {
-               system_del_route(dev, &route);
+               if (!(addr->flags & DEVADDR_OFFLINK))
+                       system_del_route(dev, &route);
        }
 }
 
@@ -336,7 +345,9 @@ interface_update_proto_addr(struct vlist_tree *tree,
        if (a_new && a_old) {
                keep = true;
 
-               if (a_old->flags != a_new->flags)
+               if (a_old->flags != a_new->flags ||
+                               a_old->valid_until != a_new->valid_until ||
+                               a_old->preferred_until != a_new->preferred_until)
                        keep = false;
 
                if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4 &&
@@ -356,7 +367,7 @@ interface_update_proto_addr(struct vlist_tree *tree,
                a_new->enabled = true;
                if (!(a_new->flags & DEVADDR_EXTERNAL) && !keep) {
                        system_add_address(dev, a_new);
-                       if (iface->metric)
+                       if ((a_new->flags & DEVADDR_OFFLINK) || iface->metric)
                                interface_handle_subnet_route(iface, a_new, true);
                }
        }
@@ -618,7 +629,7 @@ interface_update_prefix(struct vlist_tree *tree,
                list_add(&prefix_new->head, &prefixes);
 }
 
-void
+struct device_prefix*
 interface_ip_add_device_prefix(struct interface *iface, struct in6_addr *addr,
                uint8_t length, time_t valid_until, time_t preferred_until)
 {
@@ -633,6 +644,8 @@ interface_ip_add_device_prefix(struct interface *iface, struct in6_addr *addr,
                vlist_add(&iface->proto_ip.prefix, &prefix->node, &prefix->addr);
        else
                interface_update_prefix(NULL, &prefix->node, NULL);
+
+       return prefix;
 }
 
 void
@@ -657,13 +670,13 @@ interface_ip_set_ula_prefix(const char *prefix)
        if (!prefixlen || (length = atoi(prefixlen)) < 1 || length > 64)
                return;
 
-       if (ula_prefix && (!IN6_ARE_ADDR_EQUAL(&addr, &ula_prefix->addr) ||
-                       ula_prefix->length != length)) {
-               interface_update_prefix(NULL, NULL, &ula_prefix->node);
-               ula_prefix = NULL;
-       }
+       if (!ula_prefix || !IN6_ARE_ADDR_EQUAL(&addr, &ula_prefix->addr) ||
+                       ula_prefix->length != length) {
+               if (ula_prefix)
+                       interface_update_prefix(NULL, NULL, &ula_prefix->node);
 
-       interface_ip_add_device_prefix(NULL, &addr, length, 0, 0);
+               ula_prefix = interface_ip_add_device_prefix(NULL, &addr, length, 0, 0);
+       }
 }
 
 void
@@ -894,4 +907,42 @@ interface_ip_init(struct interface *iface)
        __interface_ip_init(&iface->proto_ip, iface);
        __interface_ip_init(&iface->config_ip, iface);
        vlist_init(&iface->host_routes, route_cmp, interface_update_host_route);
+
+}
+
+static void
+interface_ip_valid_until_handler(struct uloop_timeout *t)
+{
+       time_t now = system_get_rtime();
+       struct interface *iface;
+       vlist_for_each_element(&interfaces, iface, node) {
+               if (iface->state != IFS_UP)
+                       continue;
+
+               struct device_addr *addr, *addrp;
+               struct device_route *route, *routep;
+               struct device_prefix *pref, *prefp;
+
+               vlist_for_each_element_safe(&iface->proto_ip.addr, addr, node, addrp)
+                       if (addr->valid_until && addr->valid_until < now)
+                               vlist_delete(&iface->proto_ip.addr, &addr->node);
+
+               vlist_for_each_element_safe(&iface->proto_ip.route, route, node, routep)
+                       if (route->valid_until && route->valid_until < now)
+                               vlist_delete(&iface->proto_ip.route, &route->node);
+
+               vlist_for_each_element_safe(&iface->proto_ip.prefix, pref, node, prefp)
+                       if (pref->valid_until && pref->valid_until < now)
+                               vlist_delete(&iface->proto_ip.prefix, &pref->node);
+
+       }
+
+       uloop_timeout_set(t, 1000);
+}
+
+static void __init
+interface_ip_init_worker(void)
+{
+       valid_until_timeout.cb = interface_ip_valid_until_handler;
+       uloop_timeout_set(&valid_until_timeout, 1000);
 }