X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fnetifd.git;a=blobdiff_plain;f=device.c;h=4d0de677ec0bad93b95248cc57c1771548956dd2;hp=239b547abfd193d825615bb38f09c1986ead3691;hb=6dfd44e127c153e721a398f22b510be1a5e9d0b0;hpb=5d4c6b0453a5dc8cd704144d1c0647855ff63656

diff --git a/device.c b/device.c
index 239b547..4d0de67 100644
--- a/device.c
+++ b/device.c
@@ -7,24 +7,19 @@
 #include <sys/socket.h>
 #include <net/ethernet.h>
 
+#ifdef linux
+#include <netinet/ether.h>
+#endif
+
 #include "netifd.h"
 #include "system.h"
 #include "config.h"
 
 static struct avl_tree devices;
 
-enum {
-	DEV_ATTR_NAME,
-	DEV_ATTR_TYPE,
-	DEV_ATTR_MTU,
-	DEV_ATTR_MACADDR,
-	DEV_ATTR_TXQUEUELEN,
-	__DEV_ATTR_MAX,
-};
-
 static const struct blobmsg_policy dev_attrs[__DEV_ATTR_MAX] = {
-	[DEV_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING },
 	[DEV_ATTR_TYPE] = { "type", BLOBMSG_TYPE_STRING },
+	[DEV_ATTR_IFNAME] = { "ifname", BLOBMSG_TYPE_ARRAY },
 	[DEV_ATTR_MTU] = { "mtu", BLOBMSG_TYPE_INT32 },
 	[DEV_ATTR_MACADDR] = { "macaddr", BLOBMSG_TYPE_STRING },
 	[DEV_ATTR_TXQUEUELEN] = { "txqueuelen", BLOBMSG_TYPE_INT32 },
@@ -35,7 +30,38 @@ const struct config_param_list device_attr_list = {
 	.params = dev_attrs,
 };
 
-static void
+static struct device *
+simple_device_create(const char *name, struct blob_attr *attr)
+{
+	struct blob_attr *tb[__DEV_ATTR_MAX];
+	struct device *dev = NULL;
+
+	blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb, blob_data(attr), blob_len(attr));
+	dev = device_get(name, true);
+	if (!dev)
+		return NULL;
+
+	device_init_settings(dev, tb);
+
+	return dev;
+}
+
+static void simple_device_free(struct device *dev)
+{
+	device_cleanup(dev);
+	free(dev);
+}
+
+const struct device_type simple_device_type = {
+	.name = "Network device",
+	.config_params = &device_attr_list,
+
+	.create = simple_device_create,
+	.check_state = system_if_check,
+	.free = simple_device_free,
+};
+
+void
 device_init_settings(struct device *dev, struct blob_attr **tb)
 {
 	struct blob_attr *cur;
@@ -62,47 +88,12 @@ device_init_settings(struct device *dev, struct blob_attr **tb)
 	}
 }
 
-struct device *
-device_create(struct blob_attr *attr, struct uci_section *s)
-{
-	struct blob_attr *tb[__DEV_ATTR_MAX];
-	struct blob_attr *cur;
-	struct device *dev = NULL;
-	const char *name;
-
-	blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb, blob_data(attr), blob_len(attr));
-	if (!tb[DEV_ATTR_NAME])
-		return NULL;
-
-	name = blobmsg_data(tb[DEV_ATTR_NAME]);
-	if ((cur = tb[DEV_ATTR_TYPE])) {
-		if (!strcmp(blobmsg_data(cur), "bridge"))
-			dev = bridge_create(name, s);
-	} else {
-		dev = get_device(name, true);
-	}
-
-	if (!dev)
-		return NULL;
-
-	device_init_settings(dev, tb);
-
-	return dev;
-}
-
-
 static void __init dev_init(void)
 {
-	avl_init(&devices, avl_strcmp, false, NULL);
-}
-
-static void free_simple_device(struct device *dev)
-{
-	cleanup_device(dev);
-	free(dev);
+	avl_init(&devices, avl_strcmp, true, NULL);
 }
 
-static void broadcast_device_event(struct device *dev, enum device_event ev)
+static void device_broadcast_event(struct device *dev, enum device_event ev)
 {
 	struct device_user *dep, *tmp;
 
@@ -124,39 +115,53 @@ static int set_device_state(struct device *dev, bool state)
 	return 0;
 }
 
-int claim_device(struct device *dev)
+int device_claim(struct device_user *dep)
 {
+	struct device *dev = dep->dev;
 	int ret;
 
-	DPRINTF("claim device %s, new refcount: %d\n", dev->ifname, dev->active + 1);
+	if (dep->claimed)
+		return 0;
+
+	dep->claimed = true;
+	D(DEVICE, "claim device %s, new refcount: %d\n", dev->ifname, dev->active + 1);
 	if (++dev->active != 1)
 		return 0;
 
-	broadcast_device_event(dev, DEV_EVENT_SETUP);
+	device_broadcast_event(dev, DEV_EVENT_SETUP);
 	ret = dev->set_state(dev, true);
 	if (ret == 0)
-		broadcast_device_event(dev, DEV_EVENT_UP);
-	else
+		device_broadcast_event(dev, DEV_EVENT_UP);
+	else {
+		D(DEVICE, "claim device %s failed: %d\n", dev->ifname, ret);
 		dev->active = 0;
+		dep->claimed = false;
+	}
 
 	return ret;
 }
 
-void release_device(struct device *dev)
+void device_release(struct device_user *dep)
 {
+	struct device *dev = dep->dev;
+
+	if (!dep->claimed)
+		return;
+
+	dep->claimed = false;
 	dev->active--;
-	DPRINTF("release device %s, new refcount: %d\n", dev->ifname, dev->active);
+	D(DEVICE, "release device %s, new refcount: %d\n", dev->ifname, dev->active);
 	assert(dev->active >= 0);
 
 	if (dev->active)
 		return;
 
-	broadcast_device_event(dev, DEV_EVENT_TEARDOWN);
+	device_broadcast_event(dev, DEV_EVENT_TEARDOWN);
 	dev->set_state(dev, false);
-	broadcast_device_event(dev, DEV_EVENT_DOWN);
+	device_broadcast_event(dev, DEV_EVENT_DOWN);
 }
 
-int check_device_state(struct device *dev)
+int device_check_state(struct device *dev)
 {
 	if (!dev->type->check_state)
 		return 0;
@@ -164,7 +169,7 @@ int check_device_state(struct device *dev)
 	return dev->type->check_state(dev);
 }
 
-void init_virtual_device(struct device *dev, const struct device_type *type, const char *name)
+void device_init_virtual(struct device *dev, const struct device_type *type, const char *name)
 {
 	assert(dev);
 	assert(type);
@@ -172,16 +177,16 @@ void init_virtual_device(struct device *dev, const struct device_type *type, con
 	if (name)
 		strncpy(dev->ifname, name, IFNAMSIZ);
 
-	fprintf(stderr, "Initialize device '%s'\n", dev->ifname);
+	D(DEVICE, "Initialize device '%s'\n", dev->ifname);
 	INIT_LIST_HEAD(&dev->users);
 	dev->type = type;
 }
 
-int init_device(struct device *dev, const struct device_type *type, const char *ifname)
+int device_init(struct device *dev, const struct device_type *type, const char *ifname)
 {
 	int ret;
 
-	init_virtual_device(dev, type, ifname);
+	device_init_virtual(dev, type, ifname);
 
 	if (!dev->set_state)
 		dev->set_state = set_device_state;
@@ -192,20 +197,28 @@ int init_device(struct device *dev, const struct device_type *type, const char *
 	if (ret < 0)
 		return ret;
 
-	check_device_state(dev);
+	system_if_clear_state(dev);
+	device_check_state(dev);
 
 	return 0;
 }
 
-struct device *get_device(const char *name, bool create)
+static struct device *
+device_create_default(const char *name)
 {
-	static const struct device_type simple_type = {
-		.name = "Device",
-		.check_state = system_if_check,
-		.free = free_simple_device,
-	};
 	struct device *dev;
 
+	D(DEVICE, "Create simple device '%s'\n", name);
+	dev = calloc(1, sizeof(*dev));
+	device_init(dev, &simple_device_type, name);
+	dev->default_config = true;
+	return dev;
+}
+
+struct device *
+device_get(const char *name, bool create)
+{
+	struct device *dev;
 
 	if (strchr(name, '.'))
 		return get_vlan_device_chain(name, create);
@@ -217,42 +230,50 @@ struct device *get_device(const char *name, bool create)
 	if (!create)
 		return NULL;
 
-	dev = calloc(1, sizeof(*dev));
-	init_device(dev, &simple_type, name);
+	return device_create_default(name);
+}
 
-	return dev;
+static void
+device_delete(struct device *dev)
+{
+	if (!dev->avl.key)
+		return;
+
+	D(DEVICE, "Delete device '%s' from list\n", dev->ifname);
+	avl_delete(&devices, &dev->avl);
+	dev->avl.key = NULL;
 }
 
-void cleanup_device(struct device *dev)
+void device_cleanup(struct device *dev)
 {
 	struct device_user *dep, *tmp;
 
-	fprintf(stderr, "Clean up device '%s'\n", dev->ifname);
+	D(DEVICE, "Clean up device '%s'\n", dev->ifname);
 	list_for_each_entry_safe(dep, tmp, &dev->users, list) {
 		if (!dep->cb)
 			continue;
 
 		dep->cb(dep, DEV_EVENT_REMOVE);
+		device_release(dep);
 	}
 
-	if (dev->avl.key)
-		avl_delete(&devices, &dev->avl);
+	device_delete(dev);
 }
 
-void set_device_present(struct device *dev, bool state)
+void device_set_present(struct device *dev, bool state)
 {
 	if (dev->present == state)
 		return;
 
-	DPRINTF("Device '%s' %s present\n", dev->ifname, state ? "is now" : "is no longer" );
+	D(DEVICE, "Device '%s' %s present\n", dev->ifname, state ? "is now" : "is no longer" );
 	dev->present = state;
-	broadcast_device_event(dev, state ? DEV_EVENT_ADD : DEV_EVENT_REMOVE);
+	device_broadcast_event(dev, state ? DEV_EVENT_ADD : DEV_EVENT_REMOVE);
 }
 
-void add_device_user(struct device_user *dep, struct device *dev)
+void device_add_user(struct device_user *dep, struct device *dev)
 {
 	dep->dev = dev;
-	list_add(&dep->list, &dev->users);
+	list_add_tail(&dep->list, &dev->users);
 	if (dep->cb && dev->present) {
 		dep->cb(dep, DEV_EVENT_ADD);
 		if (dev->active)
@@ -260,29 +281,215 @@ void add_device_user(struct device_user *dep, struct device *dev)
 	}
 }
 
-void remove_device_user(struct device_user *dep)
+static void
+__device_free_unused(struct device *dev)
+{
+	if (!list_empty(&dev->users) || dev->current_config || config_init)
+		return;
+
+	device_free(dev);
+}
+
+void device_remove_user(struct device_user *dep)
 {
 	struct device *dev = dep->dev;
 
+	if (dep->claimed)
+		device_release(dep);
+
 	list_del(&dep->list);
+	dep->dev = NULL;
+	__device_free_unused(dev);
+}
 
-	if (list_empty(&dev->users)) {
-		/* all references have gone away, remove this device */
-		device_free(dev);
-	}
+void
+device_free_unused(struct device *dev)
+{
+	struct device *tmp;
 
-	dep->dev = NULL;
+	if (dev)
+		return __device_free_unused(dev);
+
+	avl_for_each_element_safe(&devices, dev, avl, tmp)
+		__device_free_unused(dev);
 }
 
 void
-device_free_all(void)
+device_init_pending(void)
 {
 	struct device *dev, *tmp;
 
 	avl_for_each_element_safe(&devices, dev, avl, tmp) {
-		if (!list_empty(&dev->users))
+		if (!dev->config_pending)
 			continue;
 
-		device_free(dev);
+		dev->type->config_init(dev);
+		dev->config_pending = false;
 	}
 }
+
+enum dev_change_type
+device_reload_config(struct device *dev, struct blob_attr *attr)
+{
+	struct blob_attr *tb[__DEV_ATTR_MAX];
+	const struct config_param_list *cfg = dev->type->config_params;
+
+	if (config_check_equal(dev->config, attr, cfg))
+		return DEV_CONFIG_NO_CHANGE;
+
+	if (cfg == &device_attr_list) {
+		memset(tb, 0, sizeof(tb));
+
+		if (dev->config)
+			blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb,
+				blob_data(attr), blob_len(attr));
+
+		device_init_settings(dev, tb);
+		return DEV_CONFIG_APPLIED;
+	} else
+		return DEV_CONFIG_RECREATE;
+}
+
+static enum dev_change_type
+device_check_config(struct device *dev, const struct device_type *type,
+		    struct blob_attr *attr)
+{
+	if (type != dev->type)
+		return DEV_CONFIG_RECREATE;
+
+	if (dev->type->reload)
+		return dev->type->reload(dev, attr);
+
+	return device_reload_config(dev, attr);
+}
+
+static void
+device_replace(struct device *dev, struct device *odev)
+{
+	struct device_user *dep, *tmp;
+	bool present = odev->present;
+
+	if (present)
+		device_set_present(odev, false);
+
+	list_for_each_entry_safe(dep, tmp, &odev->users, list) {
+		device_release(dep);
+		list_move_tail(&dep->list, &dev->users);
+		dep->dev = dev;
+	}
+	device_free(odev);
+
+	if (present)
+		device_set_present(dev, true);
+}
+
+void
+device_reset_config(void)
+{
+	struct device *dev;
+
+	avl_for_each_element(&devices, dev, avl)
+		dev->current_config = false;
+}
+
+void
+device_reset_old(void)
+{
+	struct device *dev, *tmp, *ndev;
+
+	avl_for_each_element_safe(&devices, dev, avl, tmp) {
+		if (dev->current_config || dev->default_config)
+			continue;
+
+		if (dev->type != &simple_device_type)
+			continue;
+
+		ndev = device_create_default(dev->ifname);
+		device_replace(ndev, dev);
+	}
+}
+
+struct device *
+device_create(const char *name, const struct device_type *type,
+	      struct blob_attr *config)
+{
+	struct device *odev = NULL, *dev;
+	enum dev_change_type change;
+
+	config = config_memdup(config);
+	if (!config)
+		return NULL;
+
+	odev = device_get(name, false);
+	if (odev) {
+		odev->current_config = true;
+		change = device_check_config(odev, type, config);
+		switch (change) {
+		case DEV_CONFIG_APPLIED:
+			D(DEVICE, "Device '%s': config applied\n", odev->ifname);
+			free(odev->config);
+			odev->config = config;
+			if (odev->present) {
+				device_set_present(odev, false);
+				device_set_present(odev, true);
+			}
+			return odev;
+		case DEV_CONFIG_NO_CHANGE:
+			D(DEVICE, "Device '%s': no configuration change\n", odev->ifname);
+			free(config);
+			return odev;
+		case DEV_CONFIG_RECREATE:
+			D(DEVICE, "Device '%s': recreate device\n", odev->ifname);
+			device_delete(odev);
+			break;
+		}
+	} else
+		D(DEVICE, "Create new device '%s' (%s)\n", name, type->name);
+
+	dev = type->create(name, config);
+	if (!dev)
+		return NULL;
+
+	dev->current_config = true;
+	dev->config = config;
+	if (odev)
+		device_replace(dev, odev);
+
+	if (!config_init && dev->config_pending)
+		type->config_init(dev);
+
+	return dev;
+}
+
+void
+device_dump_status(struct blob_buf *b, struct device *dev)
+{
+	void *c, *s;
+
+	if (!dev) {
+		avl_for_each_element(&devices, dev, avl) {
+			if (!dev->present)
+				continue;
+			c = blobmsg_open_table(b, dev->ifname);
+			device_dump_status(b, dev);
+			blobmsg_close_table(b, c);
+		}
+
+		return;
+	}
+
+	if (!dev->present)
+		return;
+
+	blobmsg_add_string(b, "type", dev->type->name);
+	blobmsg_add_u8(b, "up", !!dev->active);
+	if (dev->type->dump_info)
+		dev->type->dump_info(dev, b);
+
+	s = blobmsg_open_table(b, "statistics");
+	if (dev->type->dump_stats)
+		dev->type->dump_stats(dev, b);
+	else
+		system_if_dump_stats(dev, b);
+	blobmsg_close_table(b, s);
+}