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 2
  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 typedef struct {
  60         char *interface_name;
  61         char *default_path;
  62         int last_snr_level;
  63 } rssi_data_s;
  64
  65 static GSList *g_rssi_list = NULL;
  66 static guint netconfig_wifi_statistics_timer = 0;
  67
  68 static rssi_data_s *__create_rssi_data(const char *interface_name)
  69 {
  70         rssi_data_s *rssi_data = g_try_malloc0(sizeof(rssi_data_s));
  71         if (!rssi_data) {
  72                 ERR("Memory allocation failed");
  73                 return NULL;
  74         }
  75
  76         rssi_data->interface_name = g_strdup(interface_name);
  77
  78         g_rssi_list = g_slist_append(g_rssi_list, rssi_data);
  79
  80         return rssi_data;
  81 }
  82
  83 static rssi_data_s *__get_rssi_data(const char *interface_name)
  84 {
  85         GSList *list;
  86         rssi_data_s *rssi_data = NULL;
  87
  88         for (list = g_rssi_list; list; list = list->next) {
  89                 rssi_data = list->data;
  90                 if (g_strcmp0(rssi_data->interface_name, interface_name) == 0)
  91                         return rssi_data;
  92         }
  93
  94         return rssi_data;
  95 }
  96
  97 static void __set_rssi_data_default_path(const char *interface_name,
  98                 const char *path)
  99 {
 100         rssi_data_s *rssi_data = __get_rssi_data(interface_name);
 101         if (rssi_data == NULL)
 102                 return;
 103
 104         rssi_data->default_path = g_strdup(path);
 105 }
 106
 107 static void __destroy_rssi_data(const char *interface_name)
 108 {
 109         rssi_data_s *rssi_data = __get_rssi_data(interface_name);
 110
 111         if (!rssi_data)
 112                 return;
 113
 114         g_rssi_list = g_slist_remove(g_rssi_list, rssi_data);
 115         g_free(rssi_data->interface_name);
 116         g_free(rssi_data->default_path);
 117         g_free(rssi_data);
 118 }
 119
 120 static int __netconfig_wifi_convert_dbm_to_level_24(int rssi_dbm)
 121 {
 122         int rssi_level = 0;
 123
 124         /* Wi-Fi Signal Strength Display (for 2.4G (dB))
 125          *
 126          * Excellent :     ~ -63
 127          * Good      : -64 ~ -74
 128          * Weak      : -75 ~ -82
 129          * Very weak : -83 ~ -88
 130          * No signal : -89 ~
 131          */
 132
 133         if (rssi_dbm >= -63)
 134                 rssi_level = 4;
 135         else if (rssi_dbm >= -74)
 136                 rssi_level = 3;
 137         else if (rssi_dbm >= -82)
 138                 rssi_level = 2;
 139         else if (rssi_dbm >= -88)
 140                 rssi_level = 1;
 141         else
 142                 rssi_level = 0;
 143
 144         return rssi_level;
 145 }
 146
 147 static int __netconfig_wifi_convert_dbm_to_level_50(int rssi_dbm)
 148 {
 149         int rssi_level = 0;
 150
 151         /* Wi-Fi Signal Strength Display (for 5G (dB))
 152          *
 153          * Excellent :     ~ -67
 154          * Good      : -68 ~ -76
 155          * Weak      : -77 ~ -82
 156          * Very weak : -83 ~ -88
 157          * No signal : -89 ~
 158          */
 159
 160         if (rssi_dbm >= -67)
 161                 rssi_level = 4;
 162         else if (rssi_dbm >= -76)
 163                 rssi_level = 3;
 164         else if (rssi_dbm >= -82)
 165                 rssi_level = 2;
 166         else if (rssi_dbm >= -88)
 167                 rssi_level = 1;
 168         else
 169                 rssi_level = 0;
 170
 171         return rssi_level;
 172 }
 173
 174 static int __netconfig_wifi_get_rssi_level(const int rssi_dbm)
 175 {
 176         int snr_level = 0;
 177         int freq = 0;
 178         int ret = 0;
 179
 180         ret = netconfig_vconf_get_int("memory/private/wifi/frequency", &freq);
 181
 182         if (!ret && freq > 4900)
 183                 snr_level = __netconfig_wifi_convert_dbm_to_level_50(rssi_dbm);
 184         else
 185                 snr_level = __netconfig_wifi_convert_dbm_to_level_24(rssi_dbm);
 186
 187         return snr_level;
 188 }
 189
 190 static void __netconfig_wifi_set_rssi_level(const char *interface_name,
 191                 const char *path, const int snr_level)
 192 {
 193         rssi_data_s *rssi_data = NULL;
 194         const char *default_ifname = NULL;
 195
 196         rssi_data = __get_rssi_data(interface_name);
 197         if (rssi_data == NULL)
 198                 return;
 199
 200         if (snr_level != rssi_data->last_snr_level) {
 201                 default_ifname = netconfig_get_default_ifname();
 202                 if (g_strcmp0(default_ifname, interface_name) == 0)
 203                         netconfig_set_vconf_int(VCONFKEY_WIFI_STRENGTH, snr_level);
 204
 205                 if (g_strcmp0(rssi_data->default_path, path) == 0) {
 206                         wifi_emit_rssi_changed((Wifi *)get_wifi_object(), interface_name, snr_level);
 207
 208                         netconfig_battery_update_wifi_rssi(snr_level);
 209
 210                         rssi_data->last_snr_level = snr_level;
 211                 }
 212         }
 213 }
 214
 215 static void __netconfig_wifi_data_activity_booster(int level)
 216 {
 217         gboolean reply = FALSE;
 218         GVariant *params = NULL;
 219         int level1 = 1;
 220         int level2 = 2;
 221         int level3 = 3;
 222
 223         int lock = 2000;
 224         int unlock = 0;
 225
 226         static int old_level = 0;
 227
 228         if (level < 0)
 229                 return;
 230
 231         if (level > 0) {
 232                 /* enable booster */
 233                 switch (level) {
 234                 case 1:
 235                         params = g_variant_new("(ii)", level1, lock);
 236                         break;
 237                 case 2:
 238                         params = g_variant_new("(ii)", level2, lock);
 239                         break;
 240                 case 3:
 241                         params = g_variant_new("(ii)", level3, lock);
 242                         break;
 243                 default:
 244                         ERR("Invalid level");
 245                         return;
 246                 }
 247
 248                 reply = netconfig_invoke_dbus_method_nonblock(
 249                                 "org.tizen.system.deviced",
 250                                 "/Org/Tizen/System/DeviceD/PmQos",
 251                                 "org.tizen.system.deviced.PmQos",
 252                                 "WifiThroughput",
 253                                 params,
 254                                 NULL,
 255                                 NULL);
 256                 if (reply != TRUE)
 257                         return;
 258         }
 259
 260         /* disable previous booster */
 261         if (old_level == 0 || old_level == level)
 262                 return;
 263
 264         switch (old_level) {
 265         case 1:
 266                 params = g_variant_new("(ii)", level1, unlock);
 267                 break;
 268         case 2:
 269                 params = g_variant_new("(ii)", level2, unlock);
 270                 break;
 271         case 3:
 272                 params = g_variant_new("(ii)", level3, unlock);
 273                 break;
 274         default:
 275                 ERR("Invalid level");
 276                 return;
 277         }
 278
 279         reply = netconfig_invoke_dbus_method_nonblock(
 280                         "org.tizen.system.deviced",
 281                         "/Org/Tizen/System/DeviceD/PmQos",
 282                         "org.tizen.system.deviced.PmQos",
 283                         "WifiThroughput",
 284                         params,
 285                         NULL,
 286                         NULL);
 287         if (reply != TRUE)
 288                 return;
 289
 290         old_level = level;
 291 }
 292
 293 static void __netconfig_wifi_get_statistics(void)
 294 {
 295         static int last_transfer_state = 0;
 296         static guint64 netconfig_wifi_tx_bytes = 0;
 297         static guint64 netconfig_wifi_rx_bytes = 0;
 298         static int booster_tic = 0;
 299         static int old_level = 0;
 300         int booster_level = 0;
 301         guint64 tx, rx, tx_diff, rx_diff;
 302         int transfer_state;
 303
 304         if (netconfig_wifi_get_bytes_statistics(&tx, &rx) == TRUE) {
 305                 tx_diff = tx - netconfig_wifi_tx_bytes;
 306                 rx_diff = rx - netconfig_wifi_rx_bytes;
 307
 308                 if (tx_diff > 0) {
 309                         if (rx_diff > 0)
 310                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_TXRX;
 311                         else
 312                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_TX;
 313                 } else {
 314                         if (rx_diff > 0)
 315                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_RX;
 316                         else
 317                                 transfer_state = VCONFKEY_WIFI_TRANSFER_STATE_NONE;
 318                 }
 319
 320                 if (transfer_state != last_transfer_state) {
 321                         netconfig_set_vconf_int(VCONFKEY_WIFI_TRANSFER_STATE, transfer_state);
 322                         last_transfer_state = transfer_state;
 323                 }
 324
 325                 /* NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER */
 326                 if (tx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL1 ||
 327                         rx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL1)
 328                         booster_level = 1;
 329                 else if (tx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL2 ||
 330                                 rx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL2)
 331                         booster_level = 2;
 332                 else if (tx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL3 ||
 333                                 rx_diff >= NETCONFIG_WIFI_DATA_ACTIVITY_BOOSTER_LEVEL3)
 334                         booster_level = 3;
 335
 336                 if (old_level == booster_level) {
 337                         if (--booster_tic <= 0) {
 338                                 __netconfig_wifi_data_activity_booster(booster_level);
 339
 340                                 booster_tic = 2;
 341                         }
 342                 } else {
 343                         __netconfig_wifi_data_activity_booster(booster_level);
 344
 345                         if (booster_level > 0)
 346                                 booster_tic = 2;
 347                         else
 348                                 booster_tic = 0;
 349                 }
 350
 351                 old_level = booster_level;
 352
 353                 netconfig_wifi_tx_bytes = tx;
 354                 netconfig_wifi_rx_bytes = rx;
 355         }
 356 }
 357
 358 static gboolean __netconfig_wifi_update_statistics(gpointer data)
 359 {
 360         int pm_state = VCONFKEY_PM_STATE_NORMAL;
 361         char *interface_name = data;
 362
 363         if (wifi_state_get_service_state(interface_name) != NETCONFIG_WIFI_CONNECTED) {
 364                 g_free(interface_name);
 365                 return FALSE;
 366         }
 367
 368         /* In case of LCD off, we don't need to update Wi-Fi indicator */
 369         netconfig_vconf_get_int(VCONFKEY_PM_STATE, &pm_state);
 370         if (pm_state >= VCONFKEY_PM_STATE_LCDOFF)
 371                 return TRUE;
 372
 373         __netconfig_wifi_get_statistics();
 374
 375         return TRUE;
 376 }
 377
 378 void netconfig_wifi_indicator_update(const char *interface_name,
 379                 const char *path, int rssi_dbm)
 380 {
 381         int pm_state = VCONFKEY_PM_STATE_NORMAL;
 382         int snr_level = 0;
 383
 384         /* In case of LCD off, we don't need to update Wi-Fi indicator */
 385         netconfig_vconf_get_int(VCONFKEY_PM_STATE, &pm_state);
 386         if (pm_state >= VCONFKEY_PM_STATE_LCDOFF)
 387                 return;
 388
 389         snr_level = __netconfig_wifi_get_rssi_level(rssi_dbm);
 390         __netconfig_wifi_set_rssi_level(interface_name, path, snr_level);
 391 }
 392
 393 void netconfig_wifi_indicator_start(const char *interface_name,
 394                 const char *profile_path)
 395 {
 396         const char *default_ifname = NULL;
 397
 398         INFO("Start Wi-Fi indicator");
 399
 400         __create_rssi_data(interface_name);
 401
 402         if (profile_path)
 403                 __set_rssi_data_default_path(interface_name, profile_path);
 404
 405         default_ifname = netconfig_get_default_ifname();
 406         if (g_strcmp0(default_ifname, interface_name) == 0)
 407                 netconfig_set_vconf_int(VCONFKEY_WIFI_STRENGTH, VCONFKEY_WIFI_STRENGTH_MAX);
 408
 409         wifi_emit_rssi_changed((Wifi *)get_wifi_object(),
 410                 interface_name, VCONFKEY_WIFI_STRENGTH_MAX);
 411
 412         netconfig_start_timer_seconds(WIFI_INDICATOR_INTERVAL,
 413                 __netconfig_wifi_update_statistics, g_strdup(interface_name),
 414                 &netconfig_wifi_statistics_timer);
 415
 416         netconfig_battery_update_wifi_rssi(VCONFKEY_WIFI_STRENGTH_MAX);
 417 }
 418
 419 void netconfig_wifi_indicator_stop(const char *interface_name)
 420 {
 421         INFO("Stop Wi-Fi indicator");
 422
 423         netconfig_stop_timer(&netconfig_wifi_statistics_timer);
 424
 425         __destroy_rssi_data(interface_name);
 426 }