src/wifi-firmware.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 <errno.h>
  21 #include <vconf.h>
  22 #include <vconf-keys.h>
  23 #include <stdio.h>
  24 #include <fcntl.h>
  25
  26 #include "log.h"
  27 #include "util.h"
  28 #include "netdbus.h"
  29 #include "emulator.h"
  30 #include "neterror.h"
  31 #include "netsupplicant.h"
  32 #include "wifi-firmware.h"
  33 #include "network-statistics.h"
  34
  35 #define WLAN_DRIVER_SCRIPT                      "/usr/bin/wlan.sh"
  36 #define WLAN_IFACE_NAME                         "wlan0"
  37
  38 #define WLAN_P2P_IFACE_NAME_TV                  "p2p0"
  39 #define WLAN_P2P_IFACE_NAME_COMMON                      "wlan0"
  40 #define WLAN_P2P_IFACE_NAME ((TIZEN_TV) ? (WLAN_P2P_IFACE_NAME_TV) : (WLAN_P2P_IFACE_NAME_COMMON))
  41 #define QUAD_CPUS_COUNT                 4
  42 #define TEMP_BUFFER_LEN                 100
  43 #define WIFI_MAC_ADD_PATH               "/sys/class/net/wlan0/address"
  44
  45 static int __netconfig_sta_firmware_start(void)
  46 {
  47         int rv = 0;
  48         const char *path = WLAN_DRIVER_SCRIPT;
  49         char *const args[] = { "/usr/bin/wlan.sh", "start", NULL };
  50         char *const envs[] = { NULL };
  51
  52         rv = netconfig_execute_file(path, args, envs);
  53         if (rv < 0)
  54                 return -EIO;
  55
  56         rv = netconfig_interface_up(WLAN_IFACE_NAME);
  57         if (rv != TRUE)
  58                 return -EIO;
  59
  60         DBG("Successfully loaded wireless device driver");
  61         return 0;
  62 }
  63
  64 static int __netconfig_sta_firmware_stop(void)
  65 {
  66         int rv = 0;
  67         const char *path = WLAN_DRIVER_SCRIPT;
  68         char *const args[] = { "/usr/bin/wlan.sh", "stop", NULL };
  69         char *const envs[] = { NULL };
  70
  71         /* Update statistics before driver remove */
  72         netconfig_wifi_statistics_update_powered_off();
  73
  74         rv = netconfig_interface_down(WLAN_IFACE_NAME);
  75         if (rv != TRUE)
  76                 return -EIO;
  77
  78         rv = netconfig_execute_file(path, args, envs);
  79         if (rv < 0)
  80                 return -EIO;
  81
  82         DBG("Successfully removed wireless device driver");
  83         return 0;
  84 }
  85
  86 static int __netconfig_p2p_firmware_start(void)
  87 {
  88         if (!netconfig_check_feature_supported(NETCONFIG_SUPPORTED_FEATURE_WIFI_DIRECT))
  89                 return -ENODEV;
  90
  91         int rv = 0;
  92         const char *path = WLAN_DRIVER_SCRIPT;
  93         char *const args[] = { "/usr/bin/wlan.sh", "p2p", NULL };
  94         char *const envs[] = { NULL };
  95
  96         rv = netconfig_execute_file(path, args, envs);
  97         if (rv < 0)
  98                 return -EIO;
  99
 100 #if defined TIZEN_WLAN_USE_P2P_INTERFACE
 101         rv = netconfig_interface_up(WLAN_P2P_IFACE_NAME);
 102         if (rv != TRUE)
 103                 return -EIO;
 104 #endif
 105
 106         DBG("Successfully loaded p2p device driver");
 107         return 0;
 108 }
 109
 110 static int __netconfig_p2p_firmware_stop(void)
 111 {
 112         if (!netconfig_check_feature_supported(NETCONFIG_SUPPORTED_FEATURE_WIFI_DIRECT))
 113                 return -ENODEV;
 114
 115         int rv = 0;
 116         const char *path = WLAN_DRIVER_SCRIPT;
 117         char *const args[] = { "/usr/bin/wlan.sh", "stop", NULL };
 118         char *const envs[] = { NULL };
 119
 120         rv = netconfig_interface_down(WLAN_IFACE_NAME);
 121         if (rv != TRUE)
 122                 return -EIO;
 123
 124         rv = netconfig_execute_file(path, args, envs);
 125         if (rv < 0)
 126                 return -EIO;
 127
 128         DBG("Successfully removed p2p device driver");
 129         return 0;
 130 }
 131
 132 static int __netconfig_softap_firmware_start(void)
 133 {
 134         if (!netconfig_check_feature_supported(NETCONFIG_SUPPORTED_FEATURE_TETHERING))
 135                 return -ENODEV;
 136
 137         int rv = 0;
 138         const char *path = WLAN_DRIVER_SCRIPT;
 139         char *const args[] = { "/usr/bin/wlan.sh", "softap", NULL };
 140         char *const envs[] = { NULL };
 141
 142         rv = netconfig_execute_file(path, args, envs);
 143         if (rv < 0)
 144                 return -EIO;
 145
 146         if (netconfig_interface_up(WLAN_IFACE_NAME) == FALSE)
 147                 return -EIO;
 148
 149         DBG("Successfully loaded softap device driver");
 150         return 0;
 151 }
 152
 153 static int __netconfig_softap_firmware_stop(void)
 154 {
 155         if (!netconfig_check_feature_supported(NETCONFIG_SUPPORTED_FEATURE_TETHERING))
 156                 return -ENODEV;
 157
 158         int rv = 0;
 159         const char *path = WLAN_DRIVER_SCRIPT;
 160         char *const args[] = { "/usr/bin/wlan.sh", "stop", NULL };
 161         char *const envs[] = { NULL };
 162
 163         rv = netconfig_interface_down(WLAN_IFACE_NAME);
 164         if (rv != TRUE)
 165                 return -EIO;
 166
 167         rv = netconfig_execute_file(path, args, envs);
 168         if (rv < 0)
 169                 return -EIO;
 170
 171         DBG("Successfully removed softap device driver");
 172         return 0;
 173 }
 174
 175 static int __netconfig_wifi_firmware_start(enum netconfig_wifi_firmware type)
 176 {
 177         if (emulator_is_emulated() == TRUE)
 178                 return -EIO;
 179
 180         switch (type) {
 181         case NETCONFIG_WIFI_STA:
 182                 return __netconfig_sta_firmware_start();
 183         case NETCONFIG_WIFI_P2P:
 184                 return __netconfig_p2p_firmware_start();
 185         case NETCONFIG_WIFI_SOFTAP:
 186                 return __netconfig_softap_firmware_start();
 187         default:
 188                 break;
 189         }
 190
 191         return -ENXIO;
 192 }
 193
 194 static int __netconfig_wifi_firmware_stop(enum netconfig_wifi_firmware type)
 195 {
 196         if (emulator_is_emulated() == TRUE)
 197                 return -EIO;
 198
 199         switch (type) {
 200         case NETCONFIG_WIFI_STA:
 201                 return __netconfig_sta_firmware_stop();
 202         case NETCONFIG_WIFI_P2P:
 203                 return __netconfig_p2p_firmware_stop();
 204         case NETCONFIG_WIFI_SOFTAP:
 205                 return __netconfig_softap_firmware_stop();
 206         default:
 207                 break;
 208         }
 209
 210         return -ENXIO;
 211 }
 212
 213 static int __netconfig_set_rps_cpus(void)
 214 {
 215         int fd, i;
 216         ssize_t count;
 217         char t_buf[TEMP_BUFFER_LEN];
 218         char r_buf[TEMP_BUFFER_LEN];
 219
 220         if (access(WIFI_MAC_ADD_PATH, F_OK) != 0) {
 221                 DBG("WiFi driver is not loaded... ");
 222                 return -1;
 223         } else {
 224                 DBG("WiFi driver loaded... ");
 225         }
 226
 227         for (i = 0; i < QUAD_CPUS_COUNT; i++) {
 228                 snprintf(t_buf, TEMP_BUFFER_LEN, "/sys/class/net/wlan0/queues/rx-%d/rps_cpus", i);
 229                 DBG("Command : [%s]", t_buf);
 230                 fd = open(t_buf, O_RDWR | O_CLOEXEC);
 231
 232                 if (fd < 0) {
 233                         DBG("failed to open rps file");
 234                         return -1;
 235                 } else {
 236                         count = read(fd, r_buf, 1);
 237
 238                         if (count < 0) {
 239                                 DBG("read failed");
 240                                 close(fd);
 241                                 return -1;
 242                         } else {
 243                                 DBG("read size = %d", count);
 244                         }
 245
 246                         if (r_buf[0] == 'e') {
 247                                 close(fd);
 248                                 continue;
 249                         } else {
 250                                 DBG("e is already written");
 251                         }
 252
 253                         if (lseek(fd, 0, SEEK_SET) < 0) {
 254                                 DBG("lseek failed");
 255                                 close(fd);
 256                                 return -1;
 257                         }
 258
 259                         count = write(fd, "e", 1);
 260
 261                         if (count < 0) {
 262                                 DBG("write failed");
 263                                 close(fd);
 264                                 return -1;
 265                         } else {
 266                                 DBG("write size = %d", count);
 267                         }
 268
 269                         close(fd);
 270                 }
 271         }
 272
 273         return 0;
 274 }
 275
 276 int netconfig_wifi_firmware(enum netconfig_wifi_firmware type, gboolean enable)
 277 {
 278         int err;
 279         static enum netconfig_wifi_firmware current_driver = NETCONFIG_WIFI_OFF;
 280         enum netconfig_wifi_firmware alias = type;
 281
 282         DBG("Wi-Fi current firmware %d (type: %d %s)", current_driver, type,
 283                                                         enable == TRUE ? "enable" : "disable");
 284
 285         if (enable == FALSE) {
 286                 if (current_driver == NETCONFIG_WIFI_OFF) {
 287                         return -EALREADY;
 288                 } else if (current_driver == alias) {
 289
 290                         err = __netconfig_wifi_firmware_stop(type);
 291                         if (err < 0 && err != -EALREADY)
 292                                 return err;
 293
 294                         current_driver = NETCONFIG_WIFI_OFF;
 295
 296                         return err;
 297                 }
 298
 299                 return -EIO;
 300         }
 301
 302         if (current_driver > NETCONFIG_WIFI_OFF) {
 303                 if (current_driver == alias)
 304                         return -EALREADY;
 305
 306                 return -EIO;
 307         }
 308
 309         err = __netconfig_wifi_firmware_start(type);
 310         if (err < 0)
 311                 DBG("Failed to execute script file");
 312         else
 313                 current_driver = alias;
 314
 315         if (__netconfig_set_rps_cpus() < 0)
 316                 DBG("Failed to set rps_cpus");
 317
 318         return err;
 319 }
 320
 321 gboolean handle_start(WifiFirmware *firmware, GDBusMethodInvocation *context, const gchar *device)
 322 {
 323         int err;
 324
 325         g_return_val_if_fail(firmware != NULL, TRUE);
 326
 327         DBG("Wi-Fi firmware start %s", device != NULL ? device : "null");
 328
 329         if (g_strcmp0("p2p", device) == 0)
 330                 err = netconfig_wifi_firmware(NETCONFIG_WIFI_P2P, TRUE);
 331         else if (g_strcmp0("softap", device) == 0)
 332                 err = netconfig_wifi_firmware(NETCONFIG_WIFI_SOFTAP, TRUE);
 333         else
 334                 err = -EINVAL;
 335
 336         if (err < 0) {
 337                 if (err == -EALREADY)
 338                         netconfig_error_already_exists(context);
 339                 else if (g_strcmp0("softap", device) == 0 && err == -EIO && netconfig_is_wifi_direct_on() == FALSE) {
 340                         if (netconfig_wifi_firmware(NETCONFIG_WIFI_P2P, FALSE) == 0 && netconfig_wifi_firmware(NETCONFIG_WIFI_SOFTAP, TRUE) == 0) {
 341                                 wifi_firmware_complete_start(firmware, context);
 342                                 return TRUE;
 343                         } else
 344                                 netconfig_error_wifi_driver_failed(context);
 345                 } else
 346                         netconfig_error_wifi_driver_failed(context);
 347
 348                 return TRUE;
 349         }
 350
 351         wifi_firmware_complete_start(firmware, context);
 352         return TRUE;
 353 }
 354
 355 gboolean handle_stop(WifiFirmware *firmware, GDBusMethodInvocation *context, const gchar *device)
 356 {
 357         int err;
 358
 359         g_return_val_if_fail(firmware != NULL, TRUE);
 360
 361         DBG("Wi-Fi firmware stop %s", device != NULL ? device : "null");
 362
 363         if (g_strcmp0("p2p", device) == 0)
 364                 err = netconfig_wifi_firmware(NETCONFIG_WIFI_P2P, FALSE);
 365         else if (g_strcmp0("softap", device) == 0)
 366                 err = netconfig_wifi_firmware(NETCONFIG_WIFI_SOFTAP, FALSE);
 367         else
 368                 err = -EINVAL;
 369
 370         if (err < 0) {
 371                 if (err == -EALREADY)
 372                         netconfig_error_already_exists(context);
 373                 else
 374                         netconfig_error_wifi_driver_failed(context);
 375
 376                 return TRUE;
 377         }
 378
 379         wifi_firmware_complete_stop(firmware, context);
 380         return TRUE;
 381 }