#include <stdio.h>
#include "netifd.h"
+#include "device.h"
+#include "interface.h"
+#include "interface-ip.h"
+#include "proto.h"
#include "ubus.h"
-
-LIST_HEAD(interfaces);
+#include "config.h"
+#include "system.h"
+
+struct vlist_tree interfaces;
+
+enum {
+ IFACE_ATTR_IFNAME,
+ IFACE_ATTR_PROTO,
+ IFACE_ATTR_AUTO,
+ IFACE_ATTR_DEFAULTROUTE,
+ IFACE_ATTR_MAX
+};
+
+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 = {
+ .n_params = IFACE_ATTR_MAX,
+ .params = iface_attrs,
+};
static void
-clear_interface_errors(struct interface *iface)
+interface_clear_errors(struct interface *iface)
{
struct interface_error *error, *tmp;
{
struct interface_error *error;
int i, len = 0;
- int *datalen;
+ int *datalen = NULL;
char *dest;
if (n_data) {
error->data[n_data] = NULL;
}
-static int
+static void
interface_event(struct interface *iface, enum interface_event ev)
{
- if (!iface->state || !iface->state->event)
- return 0;
+ struct interface_user *dep, *tmp;
- return iface->state->event(iface, iface->state, ev);
+ list_for_each_entry_safe(dep, tmp, &iface->users, list)
+ dep->cb(dep, IFEV_UP);
+
+ interface_queue_event(iface, ev);
}
static void
-__set_interface_up(struct interface *iface)
+interface_flush_state(struct interface *iface)
{
- if (iface->up)
- return;
-
- if (claim_device(iface->main_dev.dev) < 0)
- return;
-
- if (interface_event(iface, IFEV_UP) < 0) {
- release_device(iface->main_dev.dev);
- return;
- }
-
- iface->up = true;
+ interface_ip_flush(&iface->proto_ip);
+ if (iface->main_dev.dev)
+ device_release(&iface->main_dev);
+ if (iface->l3_dev != &iface->main_dev && iface->l3_dev->dev)
+ device_release(iface->l3_dev);
}
static void
-__set_interface_down(struct interface *iface)
+mark_interface_down(struct interface *iface)
+{
+ if (iface->state == IFS_UP)
+ interface_event(iface, IFEV_DOWN);
+ interface_flush_state(iface);
+ iface->state = IFS_DOWN;
+}
+
+void
+__interface_set_down(struct interface *iface, bool force)
{
- clear_interface_errors(iface);
+ interface_clear_errors(iface);
- if (!iface->up)
+ if (iface->state == IFS_DOWN ||
+ iface->state == IFS_TEARDOWN)
return;
- iface->up = false;
- interface_event(iface, IFEV_DOWN);
- release_device(iface->main_dev.dev);
+ if (iface->state == IFS_UP)
+ interface_event(iface, IFEV_DOWN);
+ iface->state = IFS_TEARDOWN;
+ interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
+ if (force)
+ interface_flush_state(iface);
}
static void
return;
}
- if (iface->active == new_state)
+ interface_set_available(iface, new_state);
+}
+
+void
+interface_set_available(struct interface *iface, bool new_state)
+{
+ if (iface->available == new_state)
return;
- iface->active = new_state;
+ D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
+ iface->available = new_state;
if (new_state) {
- if (iface->autostart)
- __set_interface_up(iface);
+ if (iface->autostart && !config_init)
+ interface_set_up(iface);
} else
- __set_interface_down(iface);
+ __interface_set_down(iface, true);
}
-struct interface *
-alloc_interface(const char *name)
+void
+interface_add_user(struct interface_user *dep, struct interface *iface)
{
- struct interface *iface;
+ dep->iface = iface;
+ list_add(&dep->list, &iface->users);
+ if (iface->state == IFS_UP)
+ dep->cb(dep, IFEV_UP);
+}
- iface = get_interface(name);
- if (iface)
- return iface;
+void
+interface_remove_user(struct interface_user *dep)
+{
+ list_del_init(&dep->list);
+ dep->iface = NULL;
+}
- iface = calloc(1, sizeof(*iface));
- iface->main_dev.cb = interface_cb;
- iface->l3_iface = &iface->main_dev;
- strncpy(iface->name, name, sizeof(iface->name) - 1);
- list_add(&iface->list, &interfaces);
- INIT_LIST_HEAD(&iface->errors);
+static void
+interface_claim_device(struct interface *iface)
+{
+ struct device *dev;
+
+ 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);
+}
- netifd_ubus_add_interface(iface);
- return iface;
+static void
+interface_cleanup(struct interface *iface)
+{
+ 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)
+ device_remove_user(&iface->main_dev);
+ iface->l3_dev = &iface->main_dev;
+ interface_set_proto_state(iface, NULL);
}
-void
-free_interface(struct interface *iface)
+static void
+interface_do_free(struct interface *iface)
{
+ interface_cleanup(iface);
+ free(iface->config);
netifd_ubus_remove_interface(iface);
- list_del(&iface->list);
- if (iface->state && iface->state->free)
- iface->state->free(iface, iface->state);
+ avl_delete(&interfaces.avl, &iface->node.avl);
free(iface);
}
-struct interface *
-get_interface(const char *name)
+static void
+interface_do_reload(struct interface *iface)
{
- struct interface *iface;
+ interface_cleanup(iface);
+ proto_init_interface(iface, iface->config);
+ interface_claim_device(iface);
+}
+
+static void
+interface_handle_config_change(struct interface *iface)
+{
+ switch(iface->config_state) {
+ case IFC_NORMAL:
+ break;
+ case IFC_RELOAD:
+ interface_do_reload(iface);
+ break;
+ case IFC_REMOVE:
+ interface_do_free(iface);
+ return;
+ }
+ if (iface->autostart && iface->available)
+ interface_set_up(iface);
+}
- list_for_each_entry(iface, &interfaces, list) {
- if (!strcmp(iface->name, name))
- return iface;
+static void
+interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
+{
+ struct interface *iface = state->iface;
+
+ switch (ev) {
+ case IFPEV_UP:
+ 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;
+ case IFPEV_LINK_LOST:
+ 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;
+ break;
}
- return NULL;
+}
+
+void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
+{
+ if (iface->proto) {
+ iface->proto->free(iface->proto);
+ iface->proto = NULL;
+ }
+ iface->state = IFS_DOWN;
+ iface->proto = state;
+ if (!state)
+ return;
+
+ state->proto_event = interface_proto_cb;
+ state->iface = iface;
+}
+
+void
+interface_init(struct interface *iface, const char *name,
+ struct blob_attr *config)
+{
+ struct blob_attr *tb[IFACE_ATTR_MAX];
+ struct blob_attr *cur;
+ const char *proto_name = NULL;
+
+ 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;
+
+ blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
+ blob_data(config), blob_len(config));
+
+ if ((cur = tb[IFACE_ATTR_PROTO]))
+ proto_name = blobmsg_data(cur);
+
+ proto_attach_interface(iface, proto_name);
+
+ 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;
+}
+
+void
+interface_add(struct interface *iface, struct blob_attr *config)
+{
+ struct blob_attr *tb[IFACE_ATTR_MAX];
+ struct blob_attr *cur;
+
+ blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
+ blob_data(config), blob_len(config));
+
+ if ((cur = tb[IFACE_ATTR_IFNAME]))
+ iface->ifname = blobmsg_data(cur);
+
+ iface->config = config;
+ vlist_add(&interfaces, &iface->node);
}
void
-interface_remove_link(struct interface *iface, struct device *llif)
+interface_remove_link(struct interface *iface, struct device *dev)
{
- struct device *dev = iface->main_dev.dev;
+ struct device *mdev = iface->main_dev.dev;
- if (dev && dev->hotplug_ops) {
- dev->hotplug_ops->del(dev, llif);
+ if (mdev && mdev->hotplug_ops) {
+ mdev->hotplug_ops->del(mdev, dev);
return;
}
- remove_device_user(&iface->main_dev);
+ device_remove_user(&iface->main_dev);
}
int
-interface_add_link(struct interface *iface, struct device *llif)
+interface_add_link(struct interface *iface, struct device *dev)
{
- struct device *dev = iface->main_dev.dev;
+ struct device *mdev = iface->main_dev.dev;
- if (dev && dev->hotplug_ops)
- return dev->hotplug_ops->add(dev, llif);
+ if (mdev && mdev->hotplug_ops)
+ return mdev->hotplug_ops->add(mdev, dev);
if (iface->main_dev.dev)
interface_remove_link(iface, NULL);
- add_device_user(&iface->main_dev, llif);
+ device_add_user(&iface->main_dev, dev);
return 0;
}
int
-set_interface_up(struct interface *iface)
+interface_set_up(struct interface *iface)
{
+ int ret;
+
iface->autostart = true;
- if (!iface->active) {
+ 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->up)
- return -1;
+ 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;
+ }
- __set_interface_up(iface);
return 0;
}
int
-set_interface_down(struct interface *iface)
+interface_set_down(struct interface *iface)
{
- iface->autostart = false;
- __set_interface_down(iface);
+ if (!iface) {
+ vlist_for_each_element(&interfaces, iface, node)
+ __interface_set_down(iface, false);
+ } else {
+ iface->autostart = false;
+ __interface_set_down(iface, false);
+ }
return 0;
}
+
+void
+interface_start_pending(void)
+{
+ struct interface *iface;
+
+ vlist_for_each_element(&interfaces, iface, node) {
+ if (iface->available && iface->autostart)
+ interface_set_up(iface);
+ }
+}
+
+static void
+set_config_state(struct interface *iface, enum interface_config_state s)
+{
+ iface->config_state = s;
+ if (iface->state == IFS_DOWN)
+ interface_handle_config_change(iface);
+ else
+ __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);
+}
+
+static void
+interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
+ struct vlist_node *node_old)
+{
+ struct interface *if_old = container_of(node_old, struct interface, node);
+ struct interface *if_new = container_of(node_new, struct interface, node);
+
+ if (node_old && node_new) {
+ D(INTERFACE, "Update interface '%s'\n", if_new->name);
+ interface_change_config(if_old, if_new);
+ } else if (node_old) {
+ D(INTERFACE, "Remove interface '%s'\n", if_old->name);
+ set_config_state(if_old, IFC_REMOVE);
+ } else if (node_new) {
+ D(INTERFACE, "Create interface '%s'\n", if_new->name);
+ proto_init_interface(if_new, if_new->config);
+ interface_claim_device(if_new);
+ netifd_ubus_add_interface(if_new);
+ }
+}
+
+
+static void __init
+interface_init_list(void)
+{
+ vlist_init(&interfaces, avl_strcmp, interface_update,
+ struct interface, node, name);
+ interfaces.keep_old = true;
+ interfaces.no_delete = true;
+}