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         if (iter == NULL) {
  95                 ERR("Fail to get list from SignalPoll");
  96                 return 0;
  97         }
  98
  99         while (g_variant_iter_loop(iter, "{sv}", &key, &variant)) {
 100                 key_value = g_variant_get_int32(variant);
 101
 102                 if (g_strcmp0(key, "rssi") == 0) {
 103                         rssi_dbm = (int)key_value;
 104                         DBG("Currently signal dbm value [%d]", rssi_dbm);
 105                         g_variant_unref(variant);
 106                         g_free(key);
 107                         break;
 108                 }
 109         }
 110
 111         g_variant_iter_free(iter);
 112
 113         if (value)
 114                 g_variant_unref(value);
 115
 116         netconfig_wifi_rssi = rssi_dbm;
 117
 118         return rssi_dbm;
 119 }
 120
 121 int netconfig_wifi_rssi_level(const int rssi_dbm)
 122 {
 123         int snr_level = 0;
 124
 125         /* Wi-Fi Signal Strength Display
 126          *
 127          * Excellent :  -63 ~
 128          * Good:                -74 ~ -64
 129          * Weak:                -82 ~ -75
 130          * Very weak:           ~ -83
 131          */
 132         if (rssi_dbm >= -63)
 133                 snr_level = 4;
 134         else if (rssi_dbm >= -74)
 135                 snr_level = 3;
 136         else if (rssi_dbm >= -82)
 137                 snr_level = 2;
 138         else
 139                 snr_level = 1;
 140
 141         return snr_level;
 142 }
 143
 144 static void __netconfig_wifi_set_rssi_level(const int snr_level)
 145 {
 146         static int last_snr_level = 0;
 147
 148         if (snr_level != last_snr_level) {
 149                 netconfig_set_vconf_int(VCONFKEY_WIFI_STRENGTH, snr_level);
 150                 last_snr_level = snr_level;
 151         }
 152 }
 153
 154 static void __netconfig_wifi_data_activity_booster(int level)
 155 {
 156         gboolean reply = FALSE;
 157         GVariant *params = NULL;
 158         int level1 = 1;
 159         int level2 = 2;
 160         int level3 = 3;
 161
 162         int lock = 2000;
 163         int unlock = 0;
 164
 165         static int old_level = 0;
 166
 167         if (level < 0)
 168                 return;
 169
 170         if (level > 0) {
 171                 /* enable booster */
 172                 switch (level) {
 173                 case 1:
 174                         params = g_variant_new("(ii)", level1, lock);
 175                         break;
 176                 case 2:
 177                         params = g_variant_new("(ii)", level2, lock);
 178                         break;
 179                 case 3:
 180                         params = g_variant_new("(ii)", level3, lock);
 181                         break;
 182                 default:
 183                         ERR("Invalid level");
 184                         return;
 185                 }
 186
 187                 reply = netconfig_invoke_dbus_method_nonblock(
 188                                 "org.tizen.system.deviced",
 189                                 "/Org/Tizen/System/DeviceD/PmQos",
 190                                 "org.tizen.system.deviced.PmQos",
 191                                 "WifiThroughput",
 192                                 params,
 193                                 NULL);
 194                 if (reply != TRUE)
 195                         return;
 196         }
 197
 198         /* disable previous booster */
 199         if (old_level == 0 || old_level == level)
 200                 return;
 201
 202         switch (old_level) {
 203         case 1:
 204                 params = g_variant_new("(ii)", level1, unlock);
 205                 break;
 206         case 2:
 207                 params = g_variant_new("(ii)", level2, unlock);
 208                 break;
 209         case 3:
 210                 params = g_variant_new("(ii)", level3, unlock);
 211                 break;
 212         default:
 213                 ERR("Invalid level");
 214                 return;
 215         }
 216
 217         reply = netconfig_invoke_dbus_method_nonblock(
 218                         "org.tizen.system.deviced",
 219                         "/Org/Tizen/System/DeviceD/PmQos",
 220                         "org.tizen.system.deviced.PmQos",
 221                         "WifiThroughput",
 222                         params,
 223                         NULL);
 224         if (reply != TRUE)
 225                 return;
 226
 227         old_level = level;
 228 }
 229
 230 static void __netconfig_wifi_update_indicator(void)
 231 {
 232         static int last_transfer_state = 0;
 233         static guint64 netconfig_wifi_tx_bytes = 0;
 234         static guint64 netconfig_wifi_rx_bytes = 0;
 235         static int booster_tic = 0;
 236         static int old_level = 0;
 237         int booster_level = 0;
 238         guint64 tx, rx, tx_diff, rx_diff;
 239         int transfer_state;
 240
 241         if (netconfig_wifi_get_bytes_statistics(&tx, &rx) == TRUE) {
 242                 tx_diff = tx - netconfig_wifi_tx_bytes;
 243                 rx_diff = rx - netconfig_wifi_rx_bytes;
 244
 245                 if (tx_diff > 0) {
 246                         if (rx_diff > 0)
 247                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_TXRX;
 248                         else
 249                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_TX;
 250                 } else {
 251                         if (rx_diff > 0)
 252                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_RX;
 253                         else
 254                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_NONE;
 255                 }
 256
 257                 if (transfer_state != last_transfer_state) {
 258                         netconfig_set_vconf_int(VCONFKEY_WIFI_TRANSFER_STATE, transfer_state);
 259                         last_transfer_state = transfer_state;
 260                 }
 261
 262                 /* NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER */
 263                 if (tx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL1 ||
 264                         rx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL1)
 265                         booster_level = 1;
 266                 else if (tx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL2 ||
 267                                 rx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL2)
 268                         booster_level = 2;
 269                 else if (tx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL3 ||
 270                                 rx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL3)
 271                         booster_level = 3;
 272
 273                 if (old_level == booster_level) {
 274                         if (--booster_tic <= 0) {
 275                                 __netconfig_wifi_data_activity_booster(booster_level);
 276
 277                                 booster_tic = 2;
 278                         }
 279                 } else {
 280                         __netconfig_wifi_data_activity_booster(booster_level);
 281
 282                         if (booster_level > 0)
 283                                 booster_tic = 2;
 284                         else
 285                                 booster_tic = 0;
 286                 }
 287
 288                 old_level = booster_level;
 289
 290                 netconfig_wifi_tx_bytes = tx;
 291                 netconfig_wifi_rx_bytes = rx;
 292         }
 293 }
 294
 295 static gboolean __wifi_indicator_monitor(gpointer data)
 296 {
 297         int rssi_dbm = 0;
 298         int snr_level = 0;
 299         int pm_state = VCONFKEY_PM_STATE_NORMAL;
 300
 301         if (wifi_state_get_service_state() != NETCONFIG_WIFI_CONNECTED)
 302                 return FALSE;
 303
 304         /* In case of LCD off, we don't need to update Wi-Fi indicator */
 305         netconfig_vconf_get_int(VCONFKEY_PM_STATE, &pm_state);
 306         if (pm_state >= VCONFKEY_PM_STATE_LCDOFF)
 307                 return TRUE;
 308
 309         rssi_dbm = __netconfig_wifi_update_and_get_rssi();
 310         /* INFO("%d dbm", rssi_dbm); */
 311         snr_level = netconfig_wifi_rssi_level(rssi_dbm);
 312         __netconfig_wifi_set_rssi_level(snr_level);
 313
 314         __netconfig_wifi_update_indicator();
 315
 316         return TRUE;
 317 }
 318
 319 void netconfig_wifi_indicator_start(void)
 320 {
 321         INFO("Start Wi-Fi indicator");
 322
 323         netconfig_set_vconf_int(VCONFKEY_WIFI_STRENGTH, VCONFKEY_WIFI_STRENGTH_MAX);
 324         netconfig_start_timer_seconds(WIFI_INDICATOR_INTERVAL, __wifi_indicator_monitor, NULL, &netconfig_wifi_indicator_timer);
 325 }
 326
 327 void netconfig_wifi_indicator_stop(void)
 328 {
 329         INFO("Stop Wi-Fi indicator");
 330
 331         netconfig_stop_timer(&netconfig_wifi_indicator_timer);
 332
 333         netconfig_wifi_rssi = VCONFKEY_WIFI_SNR_MIN;
 334 }