2 * Network Configuration Module
4 * Copyright (c) 2012-2013 Samsung Electronics Co., Ltd. All rights reserved.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
22 #include <sys/ioctl.h>
23 #include <netinet/in.h>
24 #include <netinet/ip.h>
25 #include <linux/wireless.h>
27 #include <vconf-keys.h>
32 #include "network-statistics.h"
33 #include "netsupplicant.h"
34 #include "wifi-indicator.h"
36 #define VCONFKEY_WIFI_SNR_MIN -89
38 #define NETCONFIG_WIFI_INDICATOR_INTERVAL 1
40 static guint64 netconfig_wifi_tx_bytes = 0;
41 static guint64 netconfig_wifi_rx_bytes = 0;
43 static guint netconfig_wifi_indicator_timer = 0;
46 static int __netconfig_wifi_get_signal(const char *object_path)
48 DBusConnection *connection = NULL;
49 DBusMessage *message = NULL;
54 if (object_path == NULL) {
55 ERR("Error!!! path is NULL");
59 connection = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
60 if (connection == NULL) {
61 ERR("Error!!! Failed to get system DBus");
65 message = netconfig_supplicant_invoke_dbus_method(
66 SUPPLICANT_SERVICE, connection, object_path,
67 SUPPLICANT_INTERFACE ".Interface", "GetLinkSignal",
70 if (message == NULL) {
71 ERR("Error!!! Failed to get service properties");
75 MessageType = dbus_message_get_type(message);
77 if (MessageType == DBUS_MESSAGE_TYPE_ERROR) {
78 const char *err_msg = dbus_message_get_error_name(message);
79 ERR("Error!!! Error message received [%s]", err_msg);
83 dbus_message_iter_init(message, &iter);
85 if ((MessageType = dbus_message_iter_get_arg_type(&iter)) == DBUS_TYPE_INT32)
86 dbus_message_iter_get_basic(&iter, &rssi_dbm);
90 dbus_message_unref(message);
91 dbus_connection_unref(connection);
97 dbus_message_unref(message);
99 if (connection != NULL)
100 dbus_connection_unref(connection);
102 return VCONFKEY_WIFI_SNR_MIN;
105 static int __netconfig_wifi_get_rssi_from_supplicant(void)
109 char object_path[DBUS_PATH_MAX_BUFLEN] = { 0, };
110 char *path_ptr = &object_path[0];
112 if (netconfig_wifi_get_supplicant_interface(&path_ptr) != TRUE) {
113 DBG("Fail to get wpa_supplicant DBus path");
114 return VCONFKEY_WIFI_SNR_MIN;
117 rssi_dbm = __netconfig_wifi_get_signal((const char *)path_ptr);
121 #endif /* #if defined NL80211 */
124 static int __netconfig_wifi_get_rssi_from_system(void)
127 char ifname[16] = { 0, };
128 char *ifname_ptr = &ifname[0];
131 struct iwreq wifi_req;
132 struct iw_statistics stats;
133 unsigned int iw_stats_len = sizeof(struct iw_statistics);
135 if (netconfig_wifi_get_ifname(&ifname_ptr) != TRUE) {
136 DBG("Fail to get Wi-Fi ifname from wpa_supplicant: %s", ifname_ptr);
137 return VCONFKEY_WIFI_SNR_MIN;
140 /* Set device name */
141 memset(wifi_req.ifr_name, 0, sizeof(wifi_req.ifr_name));
142 strncpy(wifi_req.ifr_name, ifname, sizeof(wifi_req.ifr_name) - 1);
143 wifi_req.ifr_name[sizeof(wifi_req.ifr_name) - 1] = '\0';
145 wifi_req.u.data.pointer = (caddr_t) &stats;
146 wifi_req.u.data.length = iw_stats_len;
147 wifi_req.u.data.flags = 1; /* Clear updated flag */
149 if ((fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0) {
150 DBG("Fail to open socket to get rssi");
151 return VCONFKEY_WIFI_SNR_MIN;
154 memset(&stats, 0, iw_stats_len);
156 if (ioctl(fd, SIOCGIWSTATS, &wifi_req) < 0) {
157 DBG("Fail to execute ioctl for SIOCGIWSTATS");
160 return VCONFKEY_WIFI_SNR_MIN;
164 rssi_dbm = stats.qual.level - 255; /** signed integer, so 255 */
168 #endif /* #if !defined NL80211 */
170 int netconfig_wifi_get_rssi(void)
174 /* There are two ways to get Wi-Fi RSSI:
175 * - WEXT interface, get DBus path of wpa_supplicant,
176 * and get Wi-Fi interface name e.g. wlan0 from wpa_supplicant.
177 * IOCTL with ifname will return RSSI dB.
178 * - NL80211 interface, get DBus path of wpa_supplicant,
179 * and get RSSI from wpa_supplicant directly.
180 * However, in this case wpa_supplicant needs some modification
181 * to get RSSI from DBus interface. */
184 rssi_dbm = __netconfig_wifi_get_rssi_from_supplicant();
186 rssi_dbm = __netconfig_wifi_get_rssi_from_system();
192 static void __netconfig_wifi_set_rssi_level(int rssi_dbm)
195 static int last_snr_level = 0;
197 /* Wi-Fi Signal Strength Display
206 else if (rssi_dbm >= -74)
208 else if (rssi_dbm >= -82)
213 if (snr_level != last_snr_level) {
214 INFO("Wi-Fi RSSI: %d dB, %d level", rssi_dbm, snr_level);
216 vconf_set_int(VCONFKEY_WIFI_STRENGTH, snr_level);
218 last_snr_level = snr_level;
222 static gboolean __netconfig_wifi_indicator_monitor(gpointer data)
225 int pm_state = VCONFKEY_PM_STATE_NORMAL;
226 guint64 tx = 0, rx = 0;
228 /* In case of LCD off, we don't need to update Wi-Fi indicator */
229 vconf_get_int(VCONFKEY_PM_STATE, &pm_state);
230 if (pm_state >= VCONFKEY_PM_STATE_LCDOFF)
233 rssi_dbm = netconfig_wifi_get_rssi();
235 if (netconfig_wifi_get_bytes_statistics(&tx, &rx) == TRUE) {
236 if (netconfig_wifi_tx_bytes < tx) {
237 if (netconfig_wifi_rx_bytes < rx)
238 vconf_set_int(VCONFKEY_WIFI_TRANSFER_STATE, VCONFKEY_WIFI_TRANSFER_STATE_TXRX);
240 vconf_set_int(VCONFKEY_WIFI_TRANSFER_STATE, VCONFKEY_WIFI_TRANSFER_STATE_TX);
242 if (netconfig_wifi_rx_bytes < rx)
243 vconf_set_int(VCONFKEY_WIFI_TRANSFER_STATE, VCONFKEY_WIFI_TRANSFER_STATE_RX);
245 vconf_set_int(VCONFKEY_WIFI_TRANSFER_STATE, VCONFKEY_WIFI_TRANSFER_STATE_NONE);
248 netconfig_wifi_tx_bytes = tx;
249 netconfig_wifi_rx_bytes = rx;
252 __netconfig_wifi_set_rssi_level(rssi_dbm);
257 void netconfig_wifi_indicator_start(void)
259 guint64 tx = 0, rx = 0;
261 INFO("Start Wi-Fi indicator");
263 vconf_set_int(VCONFKEY_WIFI_STRENGTH, VCONFKEY_WIFI_STRENGTH_MAX);
265 if (netconfig_wifi_get_bytes_statistics(&tx, &rx) == TRUE) {
266 netconfig_wifi_tx_bytes = tx;
267 netconfig_wifi_rx_bytes = rx;
269 netconfig_wifi_tx_bytes = 0;
270 netconfig_wifi_rx_bytes = 0;
273 netconfig_start_timer_seconds(
274 NETCONFIG_WIFI_INDICATOR_INTERVAL,
275 __netconfig_wifi_indicator_monitor,
277 &netconfig_wifi_indicator_timer);
280 void netconfig_wifi_indicator_stop(void)
282 INFO("Stop Wi-Fi indicator");
284 vconf_set_int(VCONFKEY_WIFI_STRENGTH, VCONFKEY_WIFI_STRENGTH_MAX);
286 netconfig_stop_timer(&netconfig_wifi_indicator_timer);