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