use uci_to_blob for creating devices
[project/netifd.git] / device.c
index e1ffba1..9e0881a 100644 (file)
--- a/device.c
+++ b/device.c
 #include <stdio.h>
 #include <assert.h>
 
-#include <libubox/uapi.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <net/ethernet.h>
 
 #include "netifd.h"
 #include "system.h"
+#include "config.h"
 
 static struct avl_tree devices;
 
-static int avl_strcmp(const void *k1, const void *k2, void *ptr)
+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_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 void
+device_init_settings(struct device *dev, struct blob_attr **tb)
 {
-       return strcmp(k1, k2);
+       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 API_CTOR dev_init(void)
+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_device(struct device *dev)
+static void free_simple_device(struct device *dev)
 {
        cleanup_device(dev);
        free(dev);
@@ -40,15 +116,11 @@ static void broadcast_device_event(struct device *dev, enum device_event ev)
 
 static int set_device_state(struct device *dev, bool state)
 {
-       if (state) {
-               broadcast_device_event(dev, DEV_EVENT_SETUP);
+       if (state)
                system_if_up(dev);
-               broadcast_device_event(dev, DEV_EVENT_UP);
-       } else {
-               broadcast_device_event(dev, DEV_EVENT_TEARDOWN);
+       else
                system_if_down(dev);
-               broadcast_device_event(dev, DEV_EVENT_DOWN);
-       }
+
        return 0;
 }
 
@@ -60,8 +132,11 @@ int claim_device(struct device *dev)
        if (++dev->active != 1)
                return 0;
 
+       broadcast_device_event(dev, DEV_EVENT_SETUP);
        ret = dev->set_state(dev, true);
-       if (ret != 0)
+       if (ret == 0)
+               broadcast_device_event(dev, DEV_EVENT_UP);
+       else
                dev->active = 0;
 
        return ret;
@@ -73,8 +148,12 @@ void release_device(struct device *dev)
        DPRINTF("release device %s, new refcount: %d\n", dev->ifname, dev->active);
        assert(dev->active >= 0);
 
-       if (!dev->active)
-               dev->set_state(dev, false);
+       if (dev->active)
+               return;
+
+       broadcast_device_event(dev, DEV_EVENT_TEARDOWN);
+       dev->set_state(dev, false);
+       broadcast_device_event(dev, DEV_EVENT_DOWN);
 }
 
 int check_device_state(struct device *dev)
@@ -85,29 +164,36 @@ int check_device_state(struct device *dev)
        return dev->type->check_state(dev);
 }
 
-int init_device(struct device *dev, const struct device_type *type, const char *ifname)
+void init_virtual_device(struct device *dev, const struct device_type *type, const char *name)
 {
-       int ret;
-
        assert(dev);
        assert(type);
 
-       if (ifname)
-               strncpy(dev->ifname, ifname, IFNAMSIZ);
+       if (name)
+               strncpy(dev->ifname, name, IFNAMSIZ);
+
+       fprintf(stderr, "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 ret;
+
+       init_virtual_device(dev, type, ifname);
 
        if (!dev->set_state)
                dev->set_state = set_device_state;
 
-       fprintf(stderr, "Initialize interface '%s'\n", dev->ifname);
-       INIT_LIST_HEAD(&dev->users);
        dev->avl.key = dev->ifname;
-       dev->type = type;
 
        ret = avl_insert(&devices, &dev->avl);
        if (ret < 0)
                return ret;
 
        check_device_state(dev);
+
        return 0;
 }
 
@@ -116,7 +202,7 @@ struct device *get_device(const char *name, bool create)
        static const struct device_type simple_type = {
                .name = "Device",
                .check_state = system_if_check,
-               .free = free_device,
+               .free = free_simple_device,
        };
        struct device *dev;
 
@@ -141,7 +227,7 @@ void cleanup_device(struct device *dev)
 {
        struct device_user *dep, *tmp;
 
-       fprintf(stderr, "Clean up interface '%s'\n", dev->ifname);
+       fprintf(stderr, "Clean up device '%s'\n", dev->ifname);
        list_for_each_entry_safe(dep, tmp, &dev->users, list) {
                if (!dep->cb)
                        continue;
@@ -149,7 +235,8 @@ void cleanup_device(struct device *dev)
                dep->cb(dep, DEV_EVENT_REMOVE);
        }
 
-       avl_delete(&devices, &dev->avl);
+       if (dev->avl.key)
+               avl_delete(&devices, &dev->avl);
 }
 
 void set_device_present(struct device *dev, bool state)
@@ -180,9 +267,22 @@ void remove_device_user(struct device_user *dep)
        list_del(&dep->list);
 
        if (list_empty(&dev->users)) {
-               /* all references have gone away, remove this interface */
-               dev->type->free(dev);
+               /* all references have gone away, remove this device */
+               free_device(dev);
        }
 
        dep->dev = NULL;
 }
+
+void
+cleanup_devices(void)
+{
+       struct device *dev, *tmp;
+
+       avl_for_each_element_safe(&devices, dev, avl, tmp) {
+               if (!list_empty(&dev->users))
+                       continue;
+
+               free_device(dev);
+       }
+}