mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-10-05 19:08:52 +02:00
b3a395091d
The ifindex is used to index the netdevs in the system (wlan, ethernet, etc.) but we can also do wifi scanning on interfaces that have no corresponding netdev object, like the P2P-device virtual interfaces. Use the wdev id's to reference interfaces, the nl80211 api doesn't care whether we use a NL80211_ATTR_IFINDEX or NL80211_ATTR_WDEV. Only wireless interfaces have a wdev id.
481 lines
12 KiB
C
481 lines
12 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2013-2018 Intel Corporation. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <errno.h>
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#include <linux/if_ether.h>
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#include <ell/ell.h>
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#include "src/iwd.h"
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#include "src/util.h"
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#include "src/wiphy.h"
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#include "src/scan.h"
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#include "src/netdev.h"
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#include "src/dbus.h"
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#include "src/station.h"
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#include "src/device.h"
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struct device {
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uint32_t index;
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struct wiphy *wiphy;
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struct netdev *netdev;
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bool powered : 1; /* Current IFUP state */
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bool dbus_powered : 1; /* Last IFUP state wanted via D-Bus */
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uint32_t ap_roam_watch;
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uint32_t wiphy_rfkill_watch;
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};
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static uint32_t netdev_watch;
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static void device_ap_roam_frame_event(struct netdev *netdev,
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const struct mmpdu_header *hdr,
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const void *body, size_t body_len,
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void *user_data)
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{
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struct device *device = user_data;
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struct station *station = station_find(device->index);
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if (!station)
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return;
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station_ap_directed_roam(station, hdr, body, body_len);
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}
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static bool device_property_get_name(struct l_dbus *dbus,
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struct l_dbus_message *message,
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struct l_dbus_message_builder *builder,
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void *user_data)
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{
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struct device *device = user_data;
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l_dbus_message_builder_append_basic(builder, 's',
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netdev_get_name(device->netdev));
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return true;
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}
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static bool device_property_get_address(struct l_dbus *dbus,
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struct l_dbus_message *message,
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struct l_dbus_message_builder *builder,
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void *user_data)
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{
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struct device *device = user_data;
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const char *str;
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str = util_address_to_string(netdev_get_address(device->netdev));
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l_dbus_message_builder_append_basic(builder, 's', str);
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return true;
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}
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static bool device_property_get_powered(struct l_dbus *dbus,
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struct l_dbus_message *message,
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struct l_dbus_message_builder *builder,
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void *user_data)
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{
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struct device *device = user_data;
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bool powered = device->powered;
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l_dbus_message_builder_append_basic(builder, 'b', &powered);
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return true;
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}
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struct set_generic_cb_data {
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struct device *device;
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struct l_dbus *dbus;
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struct l_dbus_message *message;
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l_dbus_property_complete_cb_t complete;
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};
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static void set_generic_destroy(void *user_data)
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{
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struct set_generic_cb_data *cb_data = user_data;
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/* Message hasn't been replied to, generate an Aborted error */
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if (cb_data->message)
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cb_data->complete(cb_data->dbus, cb_data->message,
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dbus_error_aborted(cb_data->message));
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l_free(cb_data);
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}
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static void set_powered_cb(struct netdev *netdev, int result, void *user_data)
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{
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struct set_generic_cb_data *cb_data = user_data;
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struct l_dbus_message *reply = NULL;
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if (result < 0)
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reply = dbus_error_failed(cb_data->message);
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cb_data->complete(cb_data->dbus, cb_data->message, reply);
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cb_data->message = NULL;
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}
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static struct l_dbus_message *device_property_set_powered(struct l_dbus *dbus,
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struct l_dbus_message *message,
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struct l_dbus_message_iter *new_value,
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l_dbus_property_complete_cb_t complete,
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void *user_data)
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{
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struct device *device = user_data;
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bool powered;
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struct set_generic_cb_data *cb_data;
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int r;
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if (!l_dbus_message_iter_get_variant(new_value, "b", &powered))
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return dbus_error_invalid_args(message);
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device->dbus_powered = powered;
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if (powered == device->powered) {
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complete(dbus, message, NULL);
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return NULL;
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}
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cb_data = l_new(struct set_generic_cb_data, 1);
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cb_data->device = device;
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cb_data->dbus = dbus;
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cb_data->message = message;
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cb_data->complete = complete;
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r = netdev_set_powered(device->netdev, powered, set_powered_cb,
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cb_data, set_generic_destroy);
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if (r < 0) {
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l_free(cb_data);
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return dbus_error_from_errno(r, message);
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}
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return NULL;
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}
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static bool device_property_get_4addr(struct l_dbus *dbus,
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struct l_dbus_message *message,
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struct l_dbus_message_builder *builder,
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void *user_data)
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{
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struct device *device = user_data;
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bool use_4addr = netdev_get_4addr(device->netdev);
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l_dbus_message_builder_append_basic(builder, 'b', &use_4addr);
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return true;
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}
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static void set_4addr_cb(struct netdev *netdev, int result, void *user_data)
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{
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struct set_generic_cb_data *cb_data = user_data;
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struct l_dbus_message *reply = NULL;
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if (result < 0)
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reply = dbus_error_failed(cb_data->message);
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cb_data->complete(cb_data->dbus, cb_data->message, reply);
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cb_data->message = NULL;
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l_dbus_property_changed(cb_data->dbus,
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netdev_get_path(cb_data->device->netdev),
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IWD_DEVICE_INTERFACE, "WDS");
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}
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static struct l_dbus_message *device_property_set_4addr(struct l_dbus *dbus,
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struct l_dbus_message *message,
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struct l_dbus_message_iter *new_value,
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l_dbus_property_complete_cb_t complete,
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void *user_data)
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{
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struct set_generic_cb_data *cb_data;
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struct device *device = user_data;
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bool use_4addr;
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if (!l_dbus_message_iter_get_variant(new_value, "b", &use_4addr))
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return dbus_error_invalid_args(message);
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if (use_4addr == netdev_get_4addr(device->netdev)) {
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complete(dbus, message, NULL);
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return NULL;
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}
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cb_data = l_new(struct set_generic_cb_data, 1);
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cb_data->device = device;
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cb_data->dbus = dbus;
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cb_data->message = message;
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cb_data->complete = complete;
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if (netdev_set_4addr(device->netdev, use_4addr, set_4addr_cb,
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cb_data, set_generic_destroy) < 0)
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return dbus_error_failed(message);
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return NULL;
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}
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static bool device_property_get_adapter(struct l_dbus *dbus,
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struct l_dbus_message *message,
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struct l_dbus_message_builder *builder,
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void *user_data)
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{
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struct device *device = user_data;
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l_dbus_message_builder_append_basic(builder, 'o',
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wiphy_get_path(device->wiphy));
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return true;
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}
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static bool device_property_get_mode(struct l_dbus *dbus,
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struct l_dbus_message *message,
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struct l_dbus_message_builder *builder,
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void *user_data)
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{
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struct device *device = user_data;
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uint32_t iftype = netdev_get_iftype(device->netdev);
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const char *modestr = dbus_iftype_to_string(iftype);
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if (modestr == NULL)
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modestr = "unknown";
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l_dbus_message_builder_append_basic(builder, 's', modestr);
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return true;
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}
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static void set_mode_cb(struct netdev *netdev, int result, void *user_data)
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{
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struct set_generic_cb_data *cb_data = user_data;
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struct l_dbus_message *reply = NULL;
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if (result < 0)
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reply = dbus_error_from_errno(result, cb_data->message);
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cb_data->complete(cb_data->dbus, cb_data->message, reply);
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cb_data->message = NULL;
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l_dbus_property_changed(cb_data->dbus,
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netdev_get_path(cb_data->device->netdev),
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IWD_DEVICE_INTERFACE, "Mode");
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}
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static struct l_dbus_message *device_property_set_mode(struct l_dbus *dbus,
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struct l_dbus_message *message,
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struct l_dbus_message_iter *new_value,
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l_dbus_property_complete_cb_t complete,
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void *user_data)
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{
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struct device *device = user_data;
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struct netdev *netdev = device->netdev;
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const char *mode;
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enum netdev_iftype iftype;
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int r;
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struct set_generic_cb_data *cb_data;
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if (!l_dbus_message_iter_get_variant(new_value, "s", &mode))
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return dbus_error_invalid_args(message);
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if (!strcmp(mode, "station"))
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iftype = NETDEV_IFTYPE_STATION;
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else if (!strcmp(mode, "ap"))
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iftype = NETDEV_IFTYPE_AP;
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else if (!strcmp(mode, "ad-hoc"))
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iftype = NETDEV_IFTYPE_ADHOC;
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else
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return dbus_error_invalid_args(message);
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if (iftype == netdev_get_iftype(netdev)) {
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complete(dbus, message, NULL);
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return NULL;
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}
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cb_data = l_new(struct set_generic_cb_data, 1);
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cb_data->device = device;
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cb_data->dbus = dbus;
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cb_data->message = message;
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cb_data->complete = complete;
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r = netdev_set_iftype(device->netdev, iftype, set_mode_cb,
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cb_data, set_generic_destroy);
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if (r < 0) {
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l_free(cb_data);
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return dbus_error_from_errno(r, message);
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}
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return NULL;
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}
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static void setup_device_interface(struct l_dbus_interface *interface)
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{
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l_dbus_interface_property(interface, "Name", 0, "s",
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device_property_get_name, NULL);
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l_dbus_interface_property(interface, "Address", 0, "s",
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device_property_get_address, NULL);
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l_dbus_interface_property(interface, "WDS", 0, "b",
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device_property_get_4addr,
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device_property_set_4addr);
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l_dbus_interface_property(interface, "Powered", 0, "b",
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device_property_get_powered,
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device_property_set_powered);
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l_dbus_interface_property(interface, "Adapter", 0, "o",
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device_property_get_adapter, NULL);
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l_dbus_interface_property(interface, "Mode", 0, "s",
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device_property_get_mode,
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device_property_set_mode);
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}
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static void device_netdev_notify(struct netdev *netdev,
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enum netdev_watch_event event,
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void *user_data)
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{
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struct device *device = netdev_get_device(netdev);
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struct l_dbus *dbus = dbus_get_bus();
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if (!device)
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return;
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switch (event) {
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case NETDEV_WATCH_EVENT_UP:
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device->powered = true;
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l_dbus_property_changed(dbus, netdev_get_path(device->netdev),
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IWD_DEVICE_INTERFACE, "Powered");
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break;
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case NETDEV_WATCH_EVENT_DOWN:
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device->powered = false;
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l_dbus_property_changed(dbus, netdev_get_path(device->netdev),
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IWD_DEVICE_INTERFACE, "Powered");
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break;
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case NETDEV_WATCH_EVENT_NAME_CHANGE:
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l_dbus_property_changed(dbus, netdev_get_path(device->netdev),
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IWD_DEVICE_INTERFACE, "Name");
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break;
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case NETDEV_WATCH_EVENT_ADDRESS_CHANGE:
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l_dbus_property_changed(dbus, netdev_get_path(device->netdev),
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IWD_DEVICE_INTERFACE, "Address");
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break;
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default:
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break;
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}
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}
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static void device_wiphy_state_changed_event(struct wiphy *wiphy,
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enum wiphy_state_watch_event event,
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void *user_data)
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{
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struct device *device = user_data;
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switch (event) {
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case WIPHY_STATE_WATCH_EVENT_RFKILLED:
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break;
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case WIPHY_STATE_WATCH_EVENT_POWERED:
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if (device->dbus_powered)
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netdev_set_powered(device->netdev, true,
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NULL, NULL, NULL);
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break;
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}
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}
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struct device *device_create(struct wiphy *wiphy, struct netdev *netdev)
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{
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struct device *device;
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struct l_dbus *dbus = dbus_get_bus();
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uint32_t ifindex = netdev_get_ifindex(netdev);
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const uint8_t action_ap_roam_prefix[2] = { 0x0a, 0x07 };
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device = l_new(struct device, 1);
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device->index = ifindex;
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device->wiphy = wiphy;
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device->netdev = netdev;
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if (!l_dbus_object_add_interface(dbus, netdev_get_path(device->netdev),
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IWD_DEVICE_INTERFACE, device))
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l_info("Unable to register %s interface", IWD_DEVICE_INTERFACE);
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if (!l_dbus_object_add_interface(dbus, netdev_get_path(device->netdev),
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L_DBUS_INTERFACE_PROPERTIES, device))
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l_info("Unable to register %s interface",
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L_DBUS_INTERFACE_PROPERTIES);
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scan_wdev_add(netdev_get_wdev_id(device->netdev));
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/*
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* register for AP roam transition watch
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*/
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device->ap_roam_watch = netdev_frame_watch_add(netdev, 0x00d0,
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action_ap_roam_prefix, sizeof(action_ap_roam_prefix),
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device_ap_roam_frame_event, device);
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device->powered = netdev_get_is_up(netdev);
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device->dbus_powered = true;
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device->wiphy_rfkill_watch =
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wiphy_state_watch_add(wiphy, device_wiphy_state_changed_event,
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device, NULL);
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return device;
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}
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void device_remove(struct device *device)
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{
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struct l_dbus *dbus = dbus_get_bus();
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l_debug("");
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l_dbus_unregister_object(dbus, netdev_get_path(device->netdev));
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scan_wdev_remove(netdev_get_wdev_id(device->netdev));
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netdev_frame_watch_remove(device->netdev, device->ap_roam_watch);
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wiphy_state_watch_remove(device->wiphy, device->wiphy_rfkill_watch);
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l_free(device);
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}
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static int device_init(void)
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{
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if (!l_dbus_register_interface(dbus_get_bus(),
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IWD_DEVICE_INTERFACE,
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setup_device_interface,
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NULL, false))
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return false;
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netdev_watch = netdev_watch_add(device_netdev_notify, NULL, NULL);
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return 0;
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}
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static void device_exit(void)
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{
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netdev_watch_remove(netdev_watch);
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l_dbus_unregister_interface(dbus_get_bus(), IWD_DEVICE_INTERFACE);
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}
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IWD_MODULE(device, device_init, device_exit)
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