+/*
+ * 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 "system.h"
struct vlist_tree interfaces;
+static LIST_HEAD(iface_all_users);
+static unsigned int interface_serial = 0;
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_IP6ASSIGN,
+ IFACE_ATTR_IP6HINT,
+ IFACE_ATTR_IP4TABLE,
+ IFACE_ATTR_IP6TABLE,
+ IFACE_ATTR_IP6CLASS,
IFACE_ATTR_MAX
};
[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 },
+ [IFACE_ATTR_IP6ASSIGN] = { .name = "ip6assign", .type = BLOBMSG_TYPE_INT32 },
+ [IFACE_ATTR_IP6HINT] = { .name = "ip6hint", .type = BLOBMSG_TYPE_STRING },
+ [IFACE_ATTR_IP4TABLE] = { .name = "ip4table", .type = BLOBMSG_TYPE_STRING },
+ [IFACE_ATTR_IP6TABLE] = { .name = "ip6table", .type = BLOBMSG_TYPE_STRING },
+ [IFACE_ATTR_IP6CLASS] = { .name = "ip6class", .type = BLOBMSG_TYPE_ARRAY },
+};
+
+static const union config_param_info iface_attr_info[IFACE_ATTR_MAX] = {
+ [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING },
+ [IFACE_ATTR_IP6CLASS] = { .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
struct interface_error *error;
int i, len = 0;
int *datalen = NULL;
- char *dest;
+ char *dest, *d_subsys, *d_code;
if (n_data) {
len = n_data * sizeof(char *);
}
}
- error = calloc(1, sizeof(*error) + sizeof(char *) + len);
+ error = calloc_a(sizeof(*error) + sizeof(char *) + len,
+ &d_subsys, subsystem ? strlen(subsystem) + 1 : 0,
+ &d_code, code ? strlen(code) + 1 : 0);
if (!error)
return;
list_add_tail(&error->list, &iface->errors);
- error->subsystem = subsystem;
- error->code = code;
dest = (char *) &error->data[n_data + 1];
for (i = 0; i < n_data; i++) {
memcpy(dest, data[i], datalen[i]);
dest += datalen[i];
}
- error->data[n_data] = NULL;
+ error->data[n_data++] = NULL;
+
+ if (subsystem)
+ error->subsystem = strcpy(d_subsys, subsystem);
+
+ if (code)
+ error->code = strcpy(d_code, code);
+}
+
+static void
+interface_data_del(struct interface *iface, struct interface_data *data)
+{
+ avl_delete(&iface->data, &data->node);
+ free(data);
+}
+
+static void
+interface_data_flush(struct interface *iface)
+{
+ struct interface_data *d, *tmp;
+
+ avl_for_each_element_safe(&iface->data, d, node, tmp)
+ interface_data_del(iface, d);
+}
+
+int
+interface_add_data(struct interface *iface, const struct blob_attr *data)
+{
+ struct interface_data *n, *o;
+
+ if (!blobmsg_check_attr(data, true))
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ n = calloc(1, sizeof(*n) + blob_pad_len(data));
+ memcpy(n->data, data, blob_pad_len(data));
+ n->node.key = blobmsg_name(data);
+
+ 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, IFEV_UP);
+ dep->cb(dep, iface, ev);
+
+ list_for_each_entry_safe(dep, tmp, &iface_all_users, list)
+ dep->cb(dep, iface, ev);
- interface_queue_event(iface, ev);
+ switch (ev) {
+ case IFEV_UP:
+ adev = iface->l3_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->main_dev.dev)
- device_release(&iface->main_dev);
if (iface->l3_dev.dev)
device_release(&iface->l3_dev);
+ interface_data_flush(iface);
}
static void
mark_interface_down(struct interface *iface)
{
- if (iface->state == IFS_UP)
+ 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);
- iface->state = IFS_DOWN;
+ system_flush_routes();
}
void
__interface_set_down(struct interface *iface, bool force)
{
- 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_ip_flush(&iface->config_ip);
- interface_ip_flush(&iface->proto_ip);
interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
if (force)
interface_flush_state(iface);
}
interface_set_available(iface, new_state);
+ if (!new_state && dep->dev->external)
+ interface_set_main_dev(iface, NULL);
}
void
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, IFEV_UP);
+ dep->cb(dep, iface, IFEV_UP);
}
void
}
static void
+interface_add_assignment_classes(struct interface *iface, struct blob_attr *list)
+{
+ struct blob_attr *cur;
+ int rem;
+
+ blobmsg_for_each_attr(cur, list, rem) {
+ if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+ continue;
+
+ if (!blobmsg_check_attr(cur, NULL))
+ continue;
+
+ struct interface_assignment_class *c = malloc(sizeof(*c) + blobmsg_data_len(cur));
+ memcpy(c->name, blobmsg_data(cur), blobmsg_data_len(cur));
+ list_add(&c->head, &iface->assignment_classes);
+ }
+}
+
+static void
+interface_clear_assignment_classes(struct interface *iface)
+{
+ while (!list_empty(&iface->assignment_classes)) {
+ struct interface_assignment_class *c = list_first_entry(&iface->assignment_classes,
+ struct interface_assignment_class, head);
+ list_del(&c->head);
+ free(c);
+ }
+}
+
+static void
+interface_merge_assignment_data(struct interface *old, struct interface *new)
+{
+ bool changed = (old->assignment_hint != new->assignment_hint ||
+ old->assignment_length != new->assignment_length ||
+ list_empty(&old->assignment_classes) != list_empty(&new->assignment_classes));
+
+ struct interface_assignment_class *c;
+ list_for_each_entry(c, &new->assignment_classes, head) {
+ // Compare list entries one-by-one to see if there was a change
+ if (list_empty(&old->assignment_classes)) // The new list is longer
+ changed = true;
+
+ if (changed)
+ break;
+
+ struct interface_assignment_class *c_old = list_first_entry(&old->assignment_classes,
+ struct interface_assignment_class, head);
+
+ if (strcmp(c_old->name, c->name)) // An entry didn't match
+ break;
+
+ list_del(&c_old->head);
+ free(c_old);
+ }
+
+ // The old list was longer than the new one or the last entry didn't match
+ if (!list_empty(&old->assignment_classes)) {
+ interface_clear_assignment_classes(old);
+ changed = true;
+ }
+
+ list_splice_init(&new->assignment_classes, &old->assignment_classes);
+
+ if (changed) {
+ old->assignment_hint = new->assignment_hint;
+ old->assignment_length = new->assignment_length;
+ interface_refresh_assignments(true);
+ }
+}
+
+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->ifname &&
+ if (iface->parent_iface.iface)
+ interface_remove_user(&iface->parent_iface);
+
+ 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)
- interface_set_main_dev(iface, 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_state(struct interface *iface)
+{
+ interface_set_available(iface, false);
+
+ interface_flush_state(iface);
+ interface_clear_errors(iface);
+ interface_set_proto_state(iface, NULL);
+
+ if (iface->main_dev.dev)
+ interface_set_main_dev(iface, NULL);
+}
static void
-interface_cleanup(struct interface *iface, bool reload)
+interface_cleanup(struct interface *iface)
{
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_clear_assignment_classes(iface);
interface_ip_flush(&iface->config_ip);
- interface_flush_state(iface);
- interface_clear_errors(iface);
- if (iface->main_dev.dev &&
- (!reload || !iface->main_dev.hotplug))
- interface_set_main_dev(iface, NULL);
- interface_set_proto_state(iface, NULL);
+ interface_cleanup_state(iface);
}
static void
interface_do_free(struct interface *iface)
{
- interface_cleanup(iface, false);
+ interface_event(iface, IFEV_FREE);
+ interface_cleanup(iface);
free(iface->config);
netifd_ubus_remove_interface(iface);
avl_delete(&interfaces.avl, &iface->node.avl);
static void
interface_do_reload(struct interface *iface)
{
- interface_cleanup(iface, true);
+ interface_event(iface, IFEV_RELOAD);
+ interface_cleanup_state(iface);
proto_init_interface(iface, iface->config);
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:
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:
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);
+ if (iface->main_dev.dev)
+ device_release(&iface->main_dev);
interface_handle_config_change(iface);
break;
case IFPEV_LINK_LOST:
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);
+ mark_interface_down(iface);
iface->state = IFS_SETUP;
break;
}
+
+ interface_write_resolv_conf();
}
void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
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);
+ INIT_LIST_HEAD(&iface->assignment_classes);
+ interface_ip_init(iface);
+ avl_init(&iface->data, avl_strcmp, false, NULL);
iface->config_ip.enabled = false;
iface->main_dev.cb = interface_cb;
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);
+
+ if ((cur = tb[IFACE_ATTR_IP6ASSIGN]))
+ iface->assignment_length = blobmsg_get_u32(cur);
+
+ iface->assignment_hint = -1;
+ if ((cur = tb[IFACE_ATTR_IP6HINT]))
+ iface->assignment_hint = strtol(blobmsg_get_string(cur), NULL, 16) &
+ ~((1 << (64 - iface->assignment_length)) - 1);
+
+ if ((cur = tb[IFACE_ATTR_IP6CLASS]))
+ interface_add_assignment_classes(iface, cur);
+
+
+ if ((cur = tb[IFACE_ATTR_IP4TABLE])) {
+ if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip4table))
+ DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
+ }
+
+ // Set a default exteranl routing table for IPv6 to do source-based-filtering
+
+ iface->ip6table = 1000 + ++interface_serial;
+ if ((cur = tb[IFACE_ATTR_IP6TABLE])) {
+ if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip6table))
+ DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(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, iface->name);
+ return true;
+}
+
+void
+interface_add(struct interface *iface, struct blob_attr *config)
+{
+ __interface_add(iface, config, false);
+}
+
+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
if (iface->main_dev.dev == dev)
return;
- device_add_user(&iface->main_dev, dev);
if (set_l3)
interface_set_l3_dev(iface, dev);
+ device_add_user(&iface->main_dev, dev);
if (claimed)
device_claim(&iface->l3_dev);
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_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 struct proto_handler *proto = if_old->proto_handler;
+ bool reload = false, reload_ip = false;
+
+#define FIELD_CHANGED_STR(field) \
+ ((!!if_old->field != !!if_new->field) || \
+ (if_old->field && \
+ strcmp(if_old->field, if_new->field) != 0))
+
+ if (FIELD_CHANGED_STR(parent_ifname)) {
+ if (if_old->parent_iface.iface)
+ interface_remove_user(&if_old->parent_iface);
+ reload = true;
+ }
+
+ if (FIELD_CHANGED_STR(ifname) ||
+ if_old->proto_handler != if_new->proto_handler)
+ reload = true;
+
+ if (!if_old->proto_handler->config_params)
+ D(INTERFACE, "No config parameters for interface '%s'\n",
+ if_old->name);
+ else if (!config_check_equal(if_old->config, if_new->config,
+ if_old->proto_handler->config_params))
+ reload = true;
+
+#define UPDATE(field, __var) ({ \
+ bool __changed = (if_old->field != if_new->field); \
+ if_old->field = if_new->field; \
+ __var |= __changed; \
+ })
- 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;
- 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_old->proto_ip.no_dns = if_new->proto_ip.no_dns;
+ interface_replace_dns(&if_old->config_ip, &if_new->config_ip);
- 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)) {
+ UPDATE(metric, reload_ip);
+ UPDATE(proto_ip.no_defaultroute, reload_ip);
+ UPDATE(ip4table, reload_ip);
+ UPDATE(ip6table, reload_ip);
+ interface_merge_assignment_data(if_old, if_new);
+
+#undef UPDATE
+
+ if (reload) {
D(INTERFACE, "Reload interface '%s because of config changes\n",
if_old->name);
- goto reload;
+ interface_clear_errors(if_old);
+ set_config_state(if_old, IFC_RELOAD);
+ goto out;
}
-#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)) {
+ if (reload_ip) {
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);
}
-#undef UPDATE
-
- goto out;
+ interface_write_resolv_conf();
-reload:
- set_config_state(if_old, IFC_RELOAD);
out:
+ if_new->config = NULL;
+ interface_cleanup(if_new);
free(old_config);
free(if_new);
}
projects / project / netifd.git / blobdiff