src/wifi-indicator.c

   1 /*
   2  * Network Configuration Module
   3  *
   4  * Copyright (c) 2000 - 2012 Samsung Electronics Co., Ltd. All rights reserved.
   5  *
   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
   9  *
  10  * http://www.apache.org/licenses/LICENSE-2.0
  11  *
  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.
  17  *
  18  */
  19
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24 #include <sys/ioctl.h>
  25 #include <netinet/in.h>
  26 #include <netinet/ip.h>
  27 #include <linux/wireless.h>
  28 #include <vconf.h>
  29 #include <vconf-keys.h>
  30
  31 #include "log.h"
  32 #include "util.h"
  33 #include "netdbus.h"
  34 #include "wifi-state.h"
  35 #include "network-state.h"
  36 #include "network-statistics.h"
  37 #include "netsupplicant.h"
  38 #include "wifi-indicator.h"
  39
  40 #define VCONFKEY_WIFI_SNR_MIN   -89
  41
  42 #if !defined TIZEN_WEARABLE
  43 #define WIFI_INDICATOR_INTERVAL 1
  44 #else
  45 #define WIFI_INDICATOR_INTERVAL 10
  46 #endif
  47
  48 #if defined TIZEN_WEARABLE
  49 #define NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL1     (19200 * 1024)
  50 #define NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL2     (2560 * 1024)
  51 #define NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL3     (1536 * 1024)
  52 #else
  53 #define NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL1     (19200 * 1024)
  54 #define NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL2     (7680 * 1024)
  55 #define NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL3     (3840 * 1024)
  56 #endif
  57 #define NETCONFIG_PROCWIRELESS                                  "/proc/net/wireless"
  58
  59 static int netconfig_wifi_rssi = VCONFKEY_WIFI_SNR_MIN;
  60 static guint netconfig_wifi_indicator_timer = 0;
  61
  62 int netconfig_wifi_get_rssi(void)
  63 {
  64         return netconfig_wifi_rssi;
  65 }
  66
  67 static int __netconfig_wifi_update_and_get_rssi(void)
  68 {
  69         const char *if_path = NULL;
  70         GVariant *message = NULL;
  71         GVariant *value = NULL;
  72         gchar *key;
  73         GVariantIter *iter;
  74         GVariant *variant;
  75         gint32 key_value;
  76         int rssi_dbm = VCONFKEY_WIFI_SNR_MIN;
  77
  78         if_path = netconfig_wifi_get_supplicant_interface();
  79         if (if_path == NULL) {
  80                 ERR("Fail to get wpa_supplicant DBus path");
  81                 return 0;
  82         }
  83
  84         message = netconfig_invoke_dbus_method(SUPPLICANT_SERVICE, if_path,
  85                                 SUPPLICANT_INTERFACE ".Interface", "SignalPoll", NULL);
  86         if (message == NULL) {
  87                 ERR("Fail to get SignalPoll from wpa_supplicant");
  88                 return 0;
  89         }
  90
  91         g_variant_get(message, "(v)", &value);
  92
  93         g_variant_get(value, "a{sv}", &iter);
  94         while (g_variant_iter_loop(iter, "{sv}", &key, &variant)) {
  95                 key_value = g_variant_get_int32(variant);
  96
  97                 if (g_strcmp0(key, "rssi") == 0) {
  98                         rssi_dbm = (int)key_value;
  99                         DBG("Currently signal dbm value [%d]", rssi_dbm);
 100                         g_variant_unref(variant);
 101                         g_free(key);
 102                         break;
 103                 }
 104         }
 105
 106         g_variant_iter_free(iter);
 107
 108         if (value)
 109                 g_variant_unref(value);
 110
 111         netconfig_wifi_rssi = rssi_dbm;
 112
 113         return rssi_dbm;
 114 }
 115
 116 int netconfig_wifi_rssi_level(const int rssi_dbm)
 117 {
 118         int snr_level = 0;
 119
 120         /* Wi-Fi Signal Strength Display
 121          *
 122          * Excellent :  -63 ~
 123          * Good:                -74 ~ -64
 124          * Weak:                -82 ~ -75
 125          * Very weak:           ~ -83
 126          */
 127         if (rssi_dbm >= -63)
 128                 snr_level = 4;
 129         else if (rssi_dbm >= -74)
 130                 snr_level = 3;
 131         else if (rssi_dbm >= -82)
 132                 snr_level = 2;
 133         else
 134                 snr_level = 1;
 135
 136         return snr_level;
 137 }
 138
 139 static void __netconfig_wifi_set_rssi_level(const int snr_level)
 140 {
 141         static int last_snr_level = 0;
 142
 143         if (snr_level != last_snr_level) {
 144                 netconfig_set_vconf_int(VCONFKEY_WIFI_STRENGTH, snr_level);
 145                 last_snr_level = snr_level;
 146         }
 147 }
 148
 149 static void __netconfig_wifi_data_activity_booster(int level)
 150 {
 151         gboolean reply = FALSE;
 152         GVariant *params = NULL;
 153         int level1 = 1;
 154         int level2 = 2;
 155         int level3 = 3;
 156
 157         int lock = 2000;
 158         int unlock = 0;
 159
 160         static int old_level = 0;
 161
 162         if (level < 0)
 163                 return;
 164
 165         if (level > 0) {
 166                 /* enable booster */
 167                 switch (level) {
 168                 case 1:
 169                         params = g_variant_new("(ii)", level1, lock);
 170                         break;
 171                 case 2:
 172                         params = g_variant_new("(ii)", level2, lock);
 173                         break;
 174                 case 3:
 175                         params = g_variant_new("(ii)", level3, lock);
 176                         break;
 177                 default:
 178                         ERR("Invalid level");
 179                         return;
 180                 }
 181
 182                 reply = netconfig_invoke_dbus_method_nonblock(
 183                                 "org.tizen.system.deviced",
 184                                 "/Org/Tizen/System/DeviceD/PmQos",
 185                                 "org.tizen.system.deviced.PmQos",
 186                                 "WifiThroughput",
 187                                 params,
 188                                 NULL);
 189                 if (reply != TRUE)
 190                         return;
 191         }
 192
 193         /* disable previous booster */
 194         if (old_level == 0 || old_level == level)
 195                 return;
 196
 197         switch (old_level) {
 198         case 1:
 199                 params = g_variant_new("(ii)", level1, unlock);
 200                 break;
 201         case 2:
 202                 params = g_variant_new("(ii)", level2, unlock);
 203                 break;
 204         case 3:
 205                 params = g_variant_new("(ii)", level3, unlock);
 206                 break;
 207         default:
 208                 ERR("Invalid level");
 209                 return;
 210         }
 211
 212         reply = netconfig_invoke_dbus_method_nonblock(
 213                         "org.tizen.system.deviced",
 214                         "/Org/Tizen/System/DeviceD/PmQos",
 215                         "org.tizen.system.deviced.PmQos",
 216                         "WifiThroughput",
 217                         params,
 218                         NULL);
 219         if (reply != TRUE)
 220                 return;
 221
 222         old_level = level;
 223 }
 224
 225 static void __netconfig_wifi_update_indicator(void)
 226 {
 227         static int last_transfer_state = 0;
 228         static guint64 netconfig_wifi_tx_bytes = 0;
 229         static guint64 netconfig_wifi_rx_bytes = 0;
 230         static int booster_tic = 0;
 231         static int old_level = 0;
 232         int booster_level = 0;
 233         guint64 tx, rx, tx_diff, rx_diff;
 234         int transfer_state;
 235
 236         if (netconfig_wifi_get_bytes_statistics(&tx, &rx) == TRUE) {
 237                 tx_diff = tx - netconfig_wifi_tx_bytes;
 238                 rx_diff = rx - netconfig_wifi_rx_bytes;
 239
 240                 if (tx_diff > 0) {
 241                         if (rx_diff > 0)
 242                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_TXRX;
 243                         else
 244                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_TX;
 245                 } else {
 246                         if (rx_diff > 0)
 247                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_RX;
 248                         else
 249                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_NONE;
 250                 }
 251
 252                 if (transfer_state != last_transfer_state) {
 253                         netconfig_set_vconf_int(VCONFKEY_WIFI_TRANSFER_STATE, transfer_state);
 254                         last_transfer_state = transfer_state;
 255                 }
 256
 257                 /* NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER */
 258                 if (tx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL1 ||
 259                         rx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL1)
 260                         booster_level = 1;
 261                 else if (tx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL2 ||
 262                                 rx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL2)
 263                         booster_level = 2;
 264                 else if (tx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL3 ||
 265                                 rx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL3)
 266                         booster_level = 3;
 267
 268                 if (old_level == booster_level) {
 269                         if (--booster_tic <= 0) {
 270                                 __netconfig_wifi_data_activity_booster(booster_level);
 271
 272                                 booster_tic = 2;
 273                         }
 274                 } else {
 275                         __netconfig_wifi_data_activity_booster(booster_level);
 276
 277                         if (booster_level > 0)
 278                                 booster_tic = 2;
 279                         else
 280                                 booster_tic = 0;
 281                 }
 282
 283                 old_level = booster_level;
 284
 285                 netconfig_wifi_tx_bytes = tx;
 286                 netconfig_wifi_rx_bytes = rx;
 287         }
 288 }
 289
 290 static gboolean __wifi_indicator_monitor(gpointer data)
 291 {
 292         int rssi_dbm = 0;
 293         int snr_level = 0;
 294         int pm_state = VCONFKEY_PM_STATE_NORMAL;
 295
 296         if (wifi_state_get_service_state() != NETCONFIG_WIFI_CONNECTED)
 297                 return FALSE;
 298
 299         /* In case of LCD off, we don't need to update Wi-Fi indicator */
 300         netconfig_vconf_get_int(VCONFKEY_PM_STATE, &pm_state);
 301         if (pm_state >= VCONFKEY_PM_STATE_LCDOFF)
 302                 return TRUE;
 303
 304         rssi_dbm = __netconfig_wifi_update_and_get_rssi();
 305         /* INFO("%d dbm", rssi_dbm); */
 306         snr_level = netconfig_wifi_rssi_level(rssi_dbm);
 307         __netconfig_wifi_set_rssi_level(snr_level);
 308
 309         __netconfig_wifi_update_indicator();
 310
 311         return TRUE;
 312 }
 313
 314 void netconfig_wifi_indicator_start(void)
 315 {
 316         INFO("Start Wi-Fi indicator");
 317
 318         netconfig_set_vconf_int(VCONFKEY_WIFI_STRENGTH, VCONFKEY_WIFI_STRENGTH_MAX);
 319         netconfig_start_timer_seconds(WIFI_INDICATOR_INTERVAL, __wifi_indicator_monitor, NULL, &netconfig_wifi_indicator_timer);
 320 }
 321
 322 void netconfig_wifi_indicator_stop(void)
 323 {
 324         INFO("Stop Wi-Fi indicator");
 325
 326         netconfig_stop_timer(&netconfig_wifi_indicator_timer);
 327
 328         netconfig_wifi_rssi = VCONFKEY_WIFI_SNR_MIN;
 329 }