X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fnetifd.git;a=blobdiff_plain;f=interface.c;h=6e3feebfa28dff2ea2d3687ba74aec877cc362aa;hp=7bf8f25a2535edb4631152a5173ad6a9b8902d59;hb=f5f78c1eca1fe2df04dae56a4d9f024533066b29;hpb=7cba7704a46a830264fd6f7234d8927ea01feaf2

diff --git a/interface.c b/interface.c
index 7bf8f25..6e3feeb 100644
--- a/interface.c
+++ b/interface.c
@@ -9,6 +9,7 @@
 #include "proto.h"
 #include "ubus.h"
 #include "config.h"
+#include "system.h"
 
 struct vlist_tree interfaces;
 
@@ -16,6 +17,7 @@ enum {
 	IFACE_ATTR_IFNAME,
 	IFACE_ATTR_PROTO,
 	IFACE_ATTR_AUTO,
+	IFACE_ATTR_DEFAULTROUTE,
 	IFACE_ATTR_MAX
 };
 
@@ -23,6 +25,7 @@ static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
 	[IFACE_ATTR_PROTO] = { .name = "proto", .type = BLOBMSG_TYPE_STRING },
 	[IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
 	[IFACE_ATTR_AUTO] = { .name = "auto", .type = BLOBMSG_TYPE_BOOL },
+	[IFACE_ATTR_DEFAULTROUTE] = { .name = "defaultroute", .type = BLOBMSG_TYPE_BOOL },
 };
 
 const struct config_param_list interface_attr_list = {
@@ -78,45 +81,34 @@ void interface_add_error(struct interface *iface, const char *subsystem,
 static void
 interface_event(struct interface *iface, enum interface_event ev)
 {
-	/* TODO */
+	struct interface_user *dep, *tmp;
+
+	list_for_each_entry_safe(dep, tmp, &iface->users, list)
+		dep->cb(dep, IFEV_UP);
+
+	interface_queue_event(iface, ev);
 }
 
 static void
-mark_interface_down(struct interface *iface)
+interface_flush_state(struct interface *iface)
 {
-	vlist_flush_all(&iface->proto_addr);
-	vlist_flush_all(&iface->proto_route);
+	interface_ip_flush(&iface->proto_ip);
 	if (iface->main_dev.dev)
 		device_release(&iface->main_dev);
-	iface->state = IFS_DOWN;
+	if (iface->l3_dev != &iface->main_dev && iface->l3_dev->dev)
+		device_release(iface->l3_dev);
 }
 
-static int
-__interface_set_up(struct interface *iface)
+static void
+mark_interface_down(struct interface *iface)
 {
-	int ret;
-
-	if (iface->state != IFS_DOWN)
-		return 0;
-
-	if (iface->main_dev.dev) {
-		ret = device_claim(&iface->main_dev);
-		if (ret)
-			return ret;
-	}
-
-	iface->state = IFS_SETUP;
-	ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
-	if (ret) {
-		mark_interface_down(iface);
-		return ret;
-	}
-
-	return 0;
-
+	if (iface->state == IFS_UP)
+		interface_event(iface, IFEV_DOWN);
+	interface_flush_state(iface);
+	iface->state = IFS_DOWN;
 }
 
-static void
+void
 __interface_set_down(struct interface *iface, bool force)
 {
 	interface_clear_errors(iface);
@@ -125,9 +117,12 @@ __interface_set_down(struct interface *iface, bool force)
 		iface->state == IFS_TEARDOWN)
 		return;
 
+	if (iface->state == IFS_UP)
+		interface_event(iface, IFEV_DOWN);
 	iface->state = IFS_TEARDOWN;
-	interface_event(iface, IFEV_DOWN);
 	interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
+	if (force)
+		interface_flush_state(iface);
 }
 
 static void
@@ -167,47 +162,72 @@ interface_set_available(struct interface *iface, bool new_state)
 		__interface_set_down(iface, true);
 }
 
+void
+interface_add_user(struct interface_user *dep, struct interface *iface)
+{
+	dep->iface = iface;
+	list_add(&dep->list, &iface->users);
+	if (iface->state == IFS_UP)
+		dep->cb(dep, IFEV_UP);
+}
+
+void
+interface_remove_user(struct interface_user *dep)
+{
+	list_del_init(&dep->list);
+	dep->iface = NULL;
+}
+
 static void
 interface_claim_device(struct interface *iface)
 {
 	struct device *dev;
 
-	if (iface->proto_handler &&
+	if (iface->ifname &&
 		!(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
 		dev = device_get(iface->ifname, true);
 		if (dev)
 			device_add_user(&iface->main_dev, dev);
 	}
+	if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
+		interface_set_available(iface, true);
 }
 
 
 static void
-interface_cleanup(struct interface *iface)
+interface_cleanup(struct interface *iface, bool reload)
 {
-	if (iface->main_dev.dev)
+	struct interface_user *dep, *tmp;
+
+	list_for_each_entry_safe(dep, tmp, &iface->users, list)
+		interface_remove_user(dep);
+
+	interface_ip_flush(&iface->config_ip);
+	interface_flush_state(iface);
+	interface_clear_errors(iface);
+	if (iface->main_dev.dev &&
+	    (!reload || !iface->main_dev.hotplug))
 		device_remove_user(&iface->main_dev);
+	iface->l3_dev = &iface->main_dev;
 	interface_set_proto_state(iface, NULL);
 }
 
 static void
 interface_do_free(struct interface *iface)
 {
-	interface_cleanup(iface);
+	interface_cleanup(iface, false);
 	free(iface->config);
 	netifd_ubus_remove_interface(iface);
+	avl_delete(&interfaces.avl, &iface->node.avl);
 	free(iface);
 }
 
 static void
 interface_do_reload(struct interface *iface)
 {
-	interface_cleanup(iface);
-
-	interface_claim_device(iface);
+	interface_cleanup(iface, true);
 	proto_init_interface(iface, iface->config);
-
-	if (iface->autostart)
-		interface_set_up(iface);
+	interface_claim_device(iface);
 }
 
 static void
@@ -221,8 +241,10 @@ interface_handle_config_change(struct interface *iface)
 		break;
 	case IFC_REMOVE:
 		interface_do_free(iface);
-		break;
+		return;
 	}
+	if (iface->autostart && iface->available)
+		interface_set_up(iface);
 }
 
 static void
@@ -235,13 +257,21 @@ interface_proto_cb(struct interface_proto_state *state, enum interface_proto_eve
 		if (iface->state != IFS_SETUP)
 			return;
 
+		interface_ip_set_enabled(&iface->config_ip, true);
+		system_flush_routes();
 		iface->state = IFS_UP;
+		iface->start_time = system_get_rtime();
 		interface_event(iface, IFEV_UP);
+		interface_write_resolv_conf();
+		netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
 		break;
 	case IFPEV_DOWN:
 		if (iface->state == IFS_DOWN)
 			return;
 
+		netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
+		interface_ip_set_enabled(&iface->config_ip, false);
+		system_flush_routes();
 		mark_interface_down(iface);
 		interface_handle_config_change(iface);
 		break;
@@ -249,8 +279,10 @@ interface_proto_cb(struct interface_proto_state *state, enum interface_proto_eve
 		if (iface->state != IFS_UP)
 			return;
 
+		netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
+		if (iface->state == IFS_UP)
+			interface_event(iface, IFEV_DOWN);
 		iface->state = IFS_SETUP;
-		interface_event(iface, IFEV_DOWN);
 		break;
 	}
 }
@@ -280,6 +312,11 @@ interface_init(struct interface *iface, const char *name,
 
 	strncpy(iface->name, name, sizeof(iface->name) - 1);
 	INIT_LIST_HEAD(&iface->errors);
+	INIT_LIST_HEAD(&iface->users);
+	INIT_LIST_HEAD(&iface->hotplug_list);
+	interface_ip_init(&iface->proto_ip, iface);
+	interface_ip_init(&iface->config_ip, iface);
+	iface->config_ip.enabled = false;
 
 	iface->main_dev.cb = interface_cb;
 	iface->l3_dev = &iface->main_dev;
@@ -292,10 +329,10 @@ interface_init(struct interface *iface, const char *name,
 
 	proto_attach_interface(iface, proto_name);
 
-	if ((cur = tb[IFACE_ATTR_AUTO]))
-		iface->autostart = blobmsg_get_bool(cur);
-	else
-		iface->autostart = true;
+	iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
+	iface->proto_ip.no_defaultroute =
+		!blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
+
 	iface->config_autostart = iface->autostart;
 }
 
@@ -315,17 +352,22 @@ interface_add(struct interface *iface, struct blob_attr *config)
 	vlist_add(&interfaces, &iface->node);
 }
 
-void
+int
 interface_remove_link(struct interface *iface, struct device *dev)
 {
 	struct device *mdev = iface->main_dev.dev;
 
-	if (mdev && mdev->hotplug_ops) {
-		mdev->hotplug_ops->del(mdev, dev);
-		return;
-	}
+	if (mdev && mdev->hotplug_ops)
+		return mdev->hotplug_ops->del(mdev, dev);
+
+	if (!iface->main_dev.hotplug)
+		return UBUS_STATUS_INVALID_ARGUMENT;
+
+	if (dev != iface->main_dev.dev)
+		return UBUS_STATUS_INVALID_ARGUMENT;
 
 	device_remove_user(&iface->main_dev);
+	return 0;
 }
 
 int
@@ -333,31 +375,54 @@ interface_add_link(struct interface *iface, struct device *dev)
 {
 	struct device *mdev = iface->main_dev.dev;
 
-	if (mdev && mdev->hotplug_ops)
-		return mdev->hotplug_ops->add(mdev, dev);
+	if (mdev == dev)
+		return 0;
 
-	if (iface->main_dev.dev)
-		interface_remove_link(iface, NULL);
+	if (iface->main_dev.hotplug)
+		device_remove_user(&iface->main_dev);
 
-	device_add_user(&iface->main_dev, dev);
+	if (mdev) {
+		if (mdev->hotplug_ops)
+			return mdev->hotplug_ops->add(mdev, dev);
+		else
+			return UBUS_STATUS_NOT_SUPPORTED;
+	}
 
+	device_add_user(&iface->main_dev, dev);
+	iface->main_dev.hotplug = true;
 	return 0;
 }
 
 int
 interface_set_up(struct interface *iface)
 {
+	int ret;
+
 	iface->autostart = true;
 
+	if (iface->state != IFS_DOWN)
+		return 0;
+
+	interface_clear_errors(iface);
 	if (!iface->available) {
 		interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
 		return -1;
 	}
 
-	if (iface->state != IFS_DOWN)
-		return 0;
+	if (iface->main_dev.dev) {
+		ret = device_claim(&iface->main_dev);
+		if (ret)
+			return ret;
+	}
 
-	return __interface_set_up(iface);
+	iface->state = IFS_SETUP;
+	ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
+	if (ret) {
+		mark_interface_down(iface);
+		return ret;
+	}
+
+	return 0;
 }
 
 int
@@ -395,19 +460,70 @@ set_config_state(struct interface *iface, enum interface_config_state s)
 		__interface_set_down(iface, false);
 }
 
+void
+interface_update_start(struct interface *iface)
+{
+	interface_ip_update_start(&iface->proto_ip);
+}
+
+void
+interface_update_complete(struct interface *iface)
+{
+	struct device_route *route;
+
+	interface_ip_update_complete(&iface->proto_ip);
+	vlist_for_each_element(&iface->config_ip.route, route, node) {
+		if (iface->l3_dev->dev) {
+			system_add_route(iface->l3_dev->dev, route);
+			route->enabled = true;
+		}
+	}
+}
+
 static void
 interface_change_config(struct interface *if_old, struct interface *if_new)
 {
 	struct blob_attr *old_config = if_old->config;
+	const char *old_ifname = if_old->ifname;
+	const struct proto_handler *proto = if_old->proto_handler;
 
+	interface_clear_errors(if_old);
 	if_old->config = if_new->config;
 	if (!if_old->config_autostart && if_new->config_autostart)
 		if_old->autostart = true;
 
 	if_old->config_autostart = if_new->config_autostart;
 	if_old->ifname = if_new->ifname;
+	if_old->proto_handler = if_new->proto_handler;
+
+	if ((!!old_ifname != !!if_new->ifname) ||
+	    (old_ifname && strcmp(old_ifname, if_new->ifname) != 0) ||
+	    proto != if_new->proto_handler) {
+		D(INTERFACE, "Reload interface '%s' because of ifname/proto change\n",
+		  if_old->name);
+		goto reload;
+	}
 
+	if (!proto->config_params)
+		D(INTERFACE, "No config parameters for interface '%s'\n",
+		  if_old->name);
+	else if (!config_check_equal(old_config, if_new->config,
+				proto->config_params)) {
+		D(INTERFACE, "Reload interface '%s because of config changes\n",
+		  if_old->name);
+		goto reload;
+	}
+
+	if (if_old->proto_ip.no_defaultroute != if_new->proto_ip.no_defaultroute) {
+		if_old->proto_ip.no_defaultroute = if_new->proto_ip.no_defaultroute;
+		interface_ip_set_enabled(&if_old->proto_ip, if_old->proto_ip.enabled);
+	}
+
+	goto out;
+
+reload:
 	set_config_state(if_old, IFC_RELOAD);
+out:
 	free(old_config);
 	free(if_new);
 }
@@ -427,9 +543,8 @@ interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
 		set_config_state(if_old, IFC_REMOVE);
 	} else if (node_new) {
 		D(INTERFACE, "Create interface '%s'\n", if_new->name);
-		interface_claim_device(if_new);
 		proto_init_interface(if_new, if_new->config);
-		interface_ip_init(if_new);
+		interface_claim_device(if_new);
 		netifd_ubus_add_interface(if_new);
 	}
 }