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         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
  87         g_free(if_path);
  88         if (message == NULL) {
  89                 ERR("Fail to get SignalPoll from wpa_supplicant");
  90                 return 0;
  91         }
  92
  93         g_variant_get(message, "(v)", &value);
  94
  95         g_variant_get(value, "a{sv}", &iter);
  96         if (iter == NULL) {
  97                 ERR("Fail to get list from SignalPoll");
  98                 return 0;
  99         }
 100
 101         while (g_variant_iter_loop(iter, "{sv}", &key, &variant)) {
 102                 key_value = g_variant_get_int32(variant);
 103
 104                 if (g_strcmp0(key, "rssi") == 0) {
 105                         rssi_dbm = (int)key_value;
 106                         DBG("Currently signal dbm value [%d]", rssi_dbm);
 107                         g_variant_unref(variant);
 108                         g_free(key);
 109                         break;
 110                 }
 111         }
 112
 113         g_variant_iter_free(iter);
 114
 115         if (value)
 116                 g_variant_unref(value);
 117
 118         netconfig_wifi_rssi = rssi_dbm;
 119
 120         return rssi_dbm;
 121 }
 122
 123 int netconfig_wifi_rssi_level(const int rssi_dbm)
 124 {
 125         int snr_level = 0;
 126
 127         /* Wi-Fi Signal Strength Display
 128          *
 129          * Excellent :  -63 ~
 130          * Good:                -74 ~ -64
 131          * Weak:                -82 ~ -75
 132          * Very weak:           ~ -83
 133          */
 134         if (rssi_dbm >= -63)
 135                 snr_level = 4;
 136         else if (rssi_dbm >= -74)
 137                 snr_level = 3;
 138         else if (rssi_dbm >= -82)
 139                 snr_level = 2;
 140         else
 141                 snr_level = 1;
 142
 143         return snr_level;
 144 }
 145
 146 static void __netconfig_wifi_set_rssi_level(const int snr_level)
 147 {
 148         static int last_snr_level = 0;
 149
 150         if (snr_level != last_snr_level) {
 151                 netconfig_set_vconf_int(VCONFKEY_WIFI_STRENGTH, snr_level);
 152                 last_snr_level = snr_level;
 153         }
 154 }
 155
 156 static void __netconfig_wifi_data_activity_booster(int level)
 157 {
 158         gboolean reply = FALSE;
 159         GVariant *params = NULL;
 160         int level1 = 1;
 161         int level2 = 2;
 162         int level3 = 3;
 163
 164         int lock = 2000;
 165         int unlock = 0;
 166
 167         static int old_level = 0;
 168
 169         if (level < 0)
 170                 return;
 171
 172         if (level > 0) {
 173                 /* enable booster */
 174                 switch (level) {
 175                 case 1:
 176                         params = g_variant_new("(ii)", level1, lock);
 177                         break;
 178                 case 2:
 179                         params = g_variant_new("(ii)", level2, lock);
 180                         break;
 181                 case 3:
 182                         params = g_variant_new("(ii)", level3, lock);
 183                         break;
 184                 default:
 185                         ERR("Invalid level");
 186                         return;
 187                 }
 188
 189                 reply = netconfig_invoke_dbus_method_nonblock(
 190                                 "org.tizen.system.deviced",
 191                                 "/Org/Tizen/System/DeviceD/PmQos",
 192                                 "org.tizen.system.deviced.PmQos",
 193                                 "WifiThroughput",
 194                                 params,
 195                                 NULL);
 196                 if (reply != TRUE)
 197                         return;
 198         }
 199
 200         /* disable previous booster */
 201         if (old_level == 0 || old_level == level)
 202                 return;
 203
 204         switch (old_level) {
 205         case 1:
 206                 params = g_variant_new("(ii)", level1, unlock);
 207                 break;
 208         case 2:
 209                 params = g_variant_new("(ii)", level2, unlock);
 210                 break;
 211         case 3:
 212                 params = g_variant_new("(ii)", level3, unlock);
 213                 break;
 214         default:
 215                 ERR("Invalid level");
 216                 return;
 217         }
 218
 219         reply = netconfig_invoke_dbus_method_nonblock(
 220                         "org.tizen.system.deviced",
 221                         "/Org/Tizen/System/DeviceD/PmQos",
 222                         "org.tizen.system.deviced.PmQos",
 223                         "WifiThroughput",
 224                         params,
 225                         NULL);
 226         if (reply != TRUE)
 227                 return;
 228
 229         old_level = level;
 230 }
 231
 232 static void __netconfig_wifi_update_indicator(void)
 233 {
 234         static int last_transfer_state = 0;
 235         static guint64 netconfig_wifi_tx_bytes = 0;
 236         static guint64 netconfig_wifi_rx_bytes = 0;
 237         static int booster_tic = 0;
 238         static int old_level = 0;
 239         int booster_level = 0;
 240         guint64 tx, rx, tx_diff, rx_diff;
 241         int transfer_state;
 242
 243         if (netconfig_wifi_get_bytes_statistics(&tx, &rx) == TRUE) {
 244                 tx_diff = tx - netconfig_wifi_tx_bytes;
 245                 rx_diff = rx - netconfig_wifi_rx_bytes;
 246
 247                 if (tx_diff > 0) {
 248                         if (rx_diff > 0)
 249                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_TXRX;
 250                         else
 251                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_TX;
 252                 } else {
 253                         if (rx_diff > 0)
 254                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_RX;
 255                         else
 256                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_NONE;
 257                 }
 258
 259                 if (transfer_state != last_transfer_state) {
 260                         netconfig_set_vconf_int(VCONFKEY_WIFI_TRANSFER_STATE, transfer_state);
 261                         last_transfer_state = transfer_state;
 262                 }
 263
 264                 /* NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER */
 265                 if (tx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL1 ||
 266                         rx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL1)
 267                         booster_level = 1;
 268                 else if (tx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL2 ||
 269                                 rx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL2)
 270                         booster_level = 2;
 271                 else if (tx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL3 ||
 272                                 rx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL3)
 273                         booster_level = 3;
 274
 275                 if (old_level == booster_level) {
 276                         if (--booster_tic <= 0) {
 277                                 __netconfig_wifi_data_activity_booster(booster_level);
 278
 279                                 booster_tic = 2;
 280                         }
 281                 } else {
 282                         __netconfig_wifi_data_activity_booster(booster_level);
 283
 284                         if (booster_level > 0)
 285                                 booster_tic = 2;
 286                         else
 287                                 booster_tic = 0;
 288                 }
 289
 290                 old_level = booster_level;
 291
 292                 netconfig_wifi_tx_bytes = tx;
 293                 netconfig_wifi_rx_bytes = rx;
 294         }
 295 }
 296
 297 static gboolean __wifi_indicator_monitor(gpointer data)
 298 {
 299         int rssi_dbm = 0;
 300         int snr_level = 0;
 301         int pm_state = VCONFKEY_PM_STATE_NORMAL;
 302
 303         if (wifi_state_get_service_state() != NETCONFIG_WIFI_CONNECTED)
 304                 return FALSE;
 305
 306         /* In case of LCD off, we don't need to update Wi-Fi indicator */
 307         netconfig_vconf_get_int(VCONFKEY_PM_STATE, &pm_state);
 308         if (pm_state >= VCONFKEY_PM_STATE_LCDOFF)
 309                 return TRUE;
 310
 311         rssi_dbm = __netconfig_wifi_update_and_get_rssi();
 312         /* INFO("%d dbm", rssi_dbm); */
 313         snr_level = netconfig_wifi_rssi_level(rssi_dbm);
 314         __netconfig_wifi_set_rssi_level(snr_level);
 315
 316         __netconfig_wifi_update_indicator();
 317
 318         return TRUE;
 319 }
 320
 321 void netconfig_wifi_indicator_start(void)
 322 {
 323         INFO("Start Wi-Fi indicator");
 324
 325         netconfig_set_vconf_int(VCONFKEY_WIFI_STRENGTH, VCONFKEY_WIFI_STRENGTH_MAX);
 326         netconfig_start_timer_seconds(WIFI_INDICATOR_INTERVAL, __wifi_indicator_monitor, NULL, &netconfig_wifi_indicator_timer);
 327 }
 328
 329 void netconfig_wifi_indicator_stop(void)
 330 {
 331         INFO("Stop Wi-Fi indicator");
 332
 333         netconfig_stop_timer(&netconfig_wifi_indicator_timer);
 334
 335         netconfig_wifi_rssi = VCONFKEY_WIFI_SNR_MIN;
 336 }