#include <stdio.h>
#include <assert.h>
-#include <libubox/uapi.h>
+#include <sys/types.h>
+#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;
-static void API_CTOR dev_init(void)
+static const struct blobmsg_policy dev_attrs[__DEV_ATTR_MAX] = {
+ [DEV_ATTR_TYPE] = { "type", BLOBMSG_TYPE_STRING },
+ [DEV_ATTR_NAME] = { "name", 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 },
+};
+
+const struct config_param_list device_attr_list = {
+ .n_params = __DEV_ATTR_MAX,
+ .params = dev_attrs,
+};
+
+static struct device *
+simple_device_create(struct blob_attr *attr)
{
- avl_init(&devices, avl_strcmp, false, NULL);
+ struct blob_attr *tb[__DEV_ATTR_MAX];
+ 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 (!name)
+ return NULL;
+
+ dev = device_get(name, true);
+ if (!dev)
+ return NULL;
+
+ device_init_settings(dev, tb);
+
+ return dev;
}
-static void free_simple_device(struct device *dev)
+static void simple_device_free(struct device *dev)
{
- cleanup_device(dev);
+ device_cleanup(dev);
free(dev);
}
-static void broadcast_device_event(struct device *dev, enum device_event ev)
+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;
+ struct ether_addr *ea;
+
+ dev->flags = 0;
+
+ if ((cur = tb[DEV_ATTR_MTU])) {
+ dev->mtu = blobmsg_get_u32(cur);
+ dev->flags |= DEV_OPT_MTU;
+ }
+
+ if ((cur = tb[DEV_ATTR_TXQUEUELEN])) {
+ dev->txqueuelen = blobmsg_get_u32(cur);
+ dev->flags |= DEV_OPT_TXQUEUELEN;
+ }
+
+ if ((cur = tb[DEV_ATTR_MACADDR])) {
+ ea = ether_aton(blob_data(cur));
+ if (ea) {
+ memcpy(dev->macaddr, ea, sizeof(dev->macaddr));
+ dev->flags |= DEV_OPT_MACADDR;
+ }
+ }
+}
+
+static void __init dev_init(void)
+{
+ avl_init(&devices, avl_strcmp, true, NULL);
+}
+
+static void device_broadcast_event(struct device *dev, enum device_event ev)
{
struct device_user *dep, *tmp;
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;
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);
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;
if (ret < 0)
return ret;
- check_device_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);
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)
}
}
-void remove_device_user(struct device_user *dep)
+static void
+__device_free_unused(struct device *dev)
+{
+ if (!list_empty(&dev->users) || dev->current_config)
+ 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 */
- free_device(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
-cleanup_devices(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;
- free_device(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], *tb1[__DEV_ATTR_MAX];
+ const struct config_param_list *params = dev->type->config_params;
+
+ blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb,
+ blob_data(attr), blob_len(attr));
+ if (dev->config)
+ blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb1,
+ blob_data(dev->config), blob_len(dev->config));
+ else
+ memset(tb1, 0, sizeof(tb1));
+
+ if (!config_diff(tb, tb1, dev->type->config_params, NULL))
+ return DEV_CONFIG_NO_CHANGE;
+
+ device_init_settings(dev, tb);
+ if (params == &device_attr_list)
+ 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;
+
+ D(DEVICE, "Create new device '%s' (%s)\n", name, type->name);
+ 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;
+ }
+ }
+
+ dev = type->create(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;
}
projects / project / netifd.git / blobdiff