+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "proto.h"
#include "ubus.h"
#include "config.h"
+#include "system.h"
struct vlist_tree interfaces;
+static LIST_HEAD(iface_all_users);
enum {
IFACE_ATTR_IFNAME,
IFACE_ATTR_PROTO,
IFACE_ATTR_AUTO,
+ IFACE_ATTR_DEFAULTROUTE,
+ IFACE_ATTR_PEERDNS,
+ IFACE_ATTR_DNS,
+ IFACE_ATTR_DNS_SEARCH,
+ IFACE_ATTR_METRIC,
+ IFACE_ATTR_INTERFACE,
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 },
+ [IFACE_ATTR_PEERDNS] = { .name = "peerdns", .type = BLOBMSG_TYPE_BOOL },
+ [IFACE_ATTR_METRIC] = { .name = "metric", .type = BLOBMSG_TYPE_INT32 },
+ [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
+ [IFACE_ATTR_DNS_SEARCH] = { .name = "dns_search", .type = BLOBMSG_TYPE_ARRAY },
+ [IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
+};
+
+static const union config_param_info iface_attr_info[IFACE_ATTR_MAX] = {
+ [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING },
};
const struct config_param_list interface_attr_list = {
.n_params = IFACE_ATTR_MAX,
.params = iface_attrs,
+ .info = iface_attr_info,
};
static void
-clear_interface_errors(struct interface *iface)
+interface_clear_errors(struct interface *iface)
{
struct interface_error *error, *tmp;
}
static void
-interface_event(struct interface *iface, enum interface_event ev)
+interface_data_del(struct interface *iface, struct interface_data *data)
{
- /* TODO */
+ avl_delete(&iface->data, &data->node);
+ free(data);
}
static void
-mark_interface_down(struct interface *iface)
+interface_data_flush(struct interface *iface)
{
- vlist_flush_all(&iface->proto_addr);
- vlist_flush_all(&iface->proto_route);
- if (iface->main_dev.dev)
- device_release(&iface->main_dev);
- iface->state = IFS_DOWN;
+ struct interface_data *d, *tmp;
+
+ avl_for_each_element_safe(&iface->data, d, node, tmp)
+ interface_data_del(iface, d);
}
-static int
-__interface_set_up(struct interface *iface)
+int
+interface_add_data(struct interface *iface, const struct blob_attr *data)
{
- int ret;
+ struct interface_data *n, *o;
- if (iface->state != IFS_DOWN)
- return 0;
+ if (!blobmsg_check_attr(data, true))
+ return UBUS_STATUS_INVALID_ARGUMENT;
- if (iface->main_dev.dev) {
- ret = device_claim(&iface->main_dev);
- if (ret)
- return ret;
- }
+ n = calloc(1, sizeof(*n) + blob_pad_len(data));
+ memcpy(n->data, data, blob_pad_len(data));
+ n->node.key = blobmsg_name(data);
- iface->state = IFS_SETUP;
- ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
- if (ret) {
- mark_interface_down(iface);
- return ret;
- }
+ o = avl_find_element(&iface->data, n->node.key, o, node);
+ if (o)
+ interface_data_del(iface, o);
+ avl_insert(&iface->data, &n->node);
return 0;
+}
+
+static void
+interface_event(struct interface *iface, enum interface_event ev)
+{
+ struct interface_user *dep, *tmp;
+ struct device *adev = NULL;
+ list_for_each_entry_safe(dep, tmp, &iface->users, list)
+ dep->cb(dep, iface, ev);
+
+ list_for_each_entry_safe(dep, tmp, &iface_all_users, list)
+ dep->cb(dep, iface, ev);
+
+ switch (ev) {
+ case IFEV_UP:
+ adev = iface->main_dev.dev;
+ /* fall through */
+ case IFEV_DOWN:
+ alias_notify_device(iface->name, adev);
+ break;
+ default:
+ break;
+ }
}
static void
+interface_flush_state(struct interface *iface)
+{
+ if (iface->l3_dev.dev)
+ device_release(&iface->l3_dev);
+ interface_data_flush(iface);
+}
+
+static void
+mark_interface_down(struct interface *iface)
+{
+ enum interface_state state = iface->state;
+
+ iface->state = IFS_DOWN;
+ if (state == IFS_UP)
+ interface_event(iface, IFEV_DOWN);
+ interface_ip_set_enabled(&iface->config_ip, false);
+ interface_ip_flush(&iface->proto_ip);
+ interface_flush_state(iface);
+ system_flush_routes();
+}
+
+void
__interface_set_down(struct interface *iface, bool force)
{
- clear_interface_errors(iface);
+ interface_clear_errors(iface);
if (iface->state == IFS_DOWN ||
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
}
interface_set_available(iface, new_state);
+ if (!new_state && dep->dev->external)
+ interface_set_main_dev(iface, NULL);
}
void
__interface_set_down(iface, true);
}
+void
+interface_add_user(struct interface_user *dep, struct interface *iface)
+{
+ if (!iface) {
+ list_add(&dep->list, &iface_all_users);
+ return;
+ }
+
+ dep->iface = iface;
+ list_add(&dep->list, &iface->users);
+ if (iface->state == IFS_UP)
+ dep->cb(dep, iface, IFEV_UP);
+}
+
+void
+interface_remove_user(struct interface_user *dep)
+{
+ list_del_init(&dep->list);
+ dep->iface = NULL;
+}
+
+static void
+interface_alias_cb(struct interface_user *dep, struct interface *iface, enum interface_event ev)
+{
+ struct interface *alias = container_of(dep, struct interface, parent_iface);
+ struct device *dev = iface->l3_dev.dev;
+
+ switch (ev) {
+ case IFEV_UP:
+ if (!dev)
+ return;
+
+ interface_set_main_dev(alias, dev);
+ interface_set_available(alias, true);
+ break;
+ case IFEV_DOWN:
+ interface_set_available(alias, false);
+ interface_set_main_dev(alias, NULL);
+ break;
+ case IFEV_FREE:
+ interface_remove_user(dep);
+ break;
+ case IFEV_RELOAD:
+ break;
+ }
+}
+
static void
interface_claim_device(struct interface *iface)
{
- struct device *dev;
+ struct interface *parent;
+ struct device *dev = NULL;
+
+ if (iface->parent_iface.iface)
+ interface_remove_user(&iface->parent_iface);
- if (iface->proto_handler &&
+ if (iface->parent_ifname) {
+ parent = vlist_find(&interfaces, iface->parent_ifname, parent, node);
+ iface->parent_iface.cb = interface_alias_cb;
+ interface_add_user(&iface->parent_iface, parent);
+ } else 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 (dev)
+ interface_set_main_dev(iface, 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)
- device_remove_user(&iface->main_dev);
+ struct interface_user *dep, *tmp;
+
+ if (iface->parent_iface.iface)
+ interface_remove_user(&iface->parent_iface);
+
+ 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)
+ interface_set_main_dev(iface, NULL);
interface_set_proto_state(iface, NULL);
}
static void
interface_do_free(struct interface *iface)
{
- interface_cleanup(iface);
+ interface_event(iface, IFEV_FREE);
+ 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_event(iface, IFEV_RELOAD);
+ interface_cleanup(iface, true);
proto_init_interface(iface, iface->config);
-
- if (iface->autostart)
- interface_set_up(iface);
+ interface_claim_device(iface);
}
static void
interface_handle_config_change(struct interface *iface)
{
- switch(iface->config_state) {
+ enum interface_config_state state = iface->config_state;
+
+ iface->config_state = IFC_NORMAL;
+ switch(state) {
case IFC_NORMAL:
break;
case IFC_RELOAD:
break;
case IFC_REMOVE:
interface_do_free(iface);
- break;
+ return;
}
+ if (iface->autostart && iface->available)
+ interface_set_up(iface);
}
static void
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);
+ 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);
mark_interface_down(iface);
+ if (iface->main_dev.dev)
+ device_release(&iface->main_dev);
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);
+ mark_interface_down(iface);
iface->state = IFS_SETUP;
- interface_event(iface, IFEV_DOWN);
break;
}
+
+ interface_write_resolv_conf();
}
void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
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);
+ avl_init(&iface->data, avl_strcmp, false, NULL);
+ 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));
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->proto_ip.no_dns =
+ !blobmsg_get_bool_default(tb[IFACE_ATTR_PEERDNS], true);
+
+ if ((cur = tb[IFACE_ATTR_DNS]))
+ interface_add_dns_server_list(&iface->config_ip, cur);
+
+ if ((cur = tb[IFACE_ATTR_DNS_SEARCH]))
+ interface_add_dns_search_list(&iface->config_ip, cur);
+
+ if ((cur = tb[IFACE_ATTR_METRIC]))
+ iface->metric = blobmsg_get_u32(cur);
+
iface->config_autostart = iface->autostart;
}
-void
-interface_add(struct interface *iface, struct blob_attr *config)
+static bool __interface_add(struct interface *iface, struct blob_attr *config, bool alias)
{
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);
+ if (alias) {
+ if ((cur = tb[IFACE_ATTR_INTERFACE]))
+ iface->parent_ifname = blobmsg_data(cur);
+ if (!iface->parent_ifname)
+ return false;
+ } else {
+ if ((cur = tb[IFACE_ATTR_IFNAME]))
+ iface->ifname = blobmsg_data(cur);
}
+
iface->config = config;
- vlist_add(&interfaces, &iface->node);
+ vlist_add(&interfaces, &iface->node, iface->name);
+ return true;
}
void
-interface_remove_link(struct interface *iface, struct device *dev)
+interface_add(struct interface *iface, struct blob_attr *config)
{
- struct device *mdev = iface->main_dev.dev;
+ __interface_add(iface, config, false);
+}
- if (mdev && mdev->hotplug_ops) {
- mdev->hotplug_ops->del(mdev, dev);
+bool
+interface_add_alias(struct interface *iface, struct blob_attr *config)
+{
+ if (iface->proto_handler->flags & PROTO_FLAG_NODEV)
+ return false;
+
+ return __interface_add(iface, config, true);
+}
+
+void
+interface_set_l3_dev(struct interface *iface, struct device *dev)
+{
+ bool enabled = iface->config_ip.enabled;
+ bool claimed = iface->l3_dev.claimed;
+
+ if (iface->l3_dev.dev == dev)
return;
+
+ interface_ip_set_enabled(&iface->config_ip, false);
+ interface_ip_flush(&iface->proto_ip);
+ device_add_user(&iface->l3_dev, dev);
+
+ if (dev) {
+ if (claimed)
+ device_claim(&iface->l3_dev);
+ interface_ip_set_enabled(&iface->config_ip, enabled);
}
+}
+
+void
+interface_set_main_dev(struct interface *iface, struct device *dev)
+{
+ bool set_l3 = (iface->main_dev.dev == iface->l3_dev.dev);
+ bool claimed = iface->l3_dev.claimed;
+
+ if (iface->main_dev.dev == dev)
+ return;
+
+ if (set_l3)
+ interface_set_l3_dev(iface, dev);
+
+ device_add_user(&iface->main_dev, dev);
+ if (claimed)
+ device_claim(&iface->l3_dev);
+
+ if (!iface->l3_dev.dev)
+ interface_set_l3_dev(iface, dev);
+}
+
+int
+interface_remove_link(struct interface *iface, struct device *dev)
+{
+ struct device *mdev = iface->main_dev.dev;
+
+ 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
{
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;
+ }
+ interface_set_main_dev(iface, 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
if (iface->state == IFS_DOWN)
interface_handle_config_change(iface);
else
- interface_set_down(iface);
+ __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)
+{
+ interface_ip_update_complete(&iface->proto_ip);
+}
+
+static void
+interface_replace_dns(struct interface_ip_settings *new, struct interface_ip_settings *old)
+{
+ vlist_simple_replace(&new->dns_servers, &old->dns_servers);
+ vlist_simple_replace(&new->dns_search, &old->dns_search);
}
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 char *old_parent_ifname = if_old->parent_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->device_config = if_new->device_config;
if_old->config_autostart = if_new->config_autostart;
if_old->ifname = if_new->ifname;
+ if_old->parent_ifname = if_new->parent_ifname;
+ if_old->proto_handler = if_new->proto_handler;
+
+#define FIELD_CHANGED_STR(field) \
+ ((!!if_old->field != !!old_ ## field) || \
+ (old_ ## field && \
+ strcmp(old_ ## field, if_old->field) != 0))
+
+ if (FIELD_CHANGED_STR(parent_ifname)) {
+ if (if_old->parent_iface.iface)
+ interface_remove_user(&if_old->parent_iface);
+ goto reload;
+ }
+ if (FIELD_CHANGED_STR(ifname) || 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;
+ }
+
+#define UPDATE(field) ({ \
+ bool __changed = (if_old->field != if_new->field); \
+ if_old->field = if_new->field; \
+ __changed; \
+ })
+
+ if (UPDATE(metric) || UPDATE(proto_ip.no_defaultroute)) {
+ interface_ip_set_enabled(&if_old->config_ip, false);
+ interface_ip_set_enabled(&if_old->config_ip, if_new->config_ip.enabled);
+ interface_ip_set_enabled(&if_old->proto_ip, false);
+ interface_ip_set_enabled(&if_old->proto_ip, if_new->proto_ip.enabled);
+ }
+
+ UPDATE(proto_ip.no_dns);
+ interface_replace_dns(&if_old->config_ip, &if_new->config_ip);
+ interface_write_resolv_conf();
+
+#undef UPDATE
+
+ goto out;
+
+reload:
set_config_state(if_old, IFC_RELOAD);
+out:
+ if_new->config = NULL;
+ interface_cleanup(if_new, false);
free(old_config);
free(if_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);
}
}
static void __init
interface_init_list(void)
{
- vlist_init(&interfaces, avl_strcmp, interface_update,
- struct interface, node, name);
+ vlist_init(&interfaces, avl_strcmp, interface_update);
interfaces.keep_old = true;
interfaces.no_delete = true;
}
projects / project / netifd.git / blobdiff