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, curr;
 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         snprintf(t_buf, TEMP_BUFFER_LEN, "/sys/class/net/wlan0/queues/rx-0/rps_cpus");
 228         DBG("Command : [%s]", t_buf);
 229         curr = 0;
 230
 231         while ((fd = open(t_buf, O_RDWR | O_CLOEXEC)) >= 0) {
 232                 curr++;
 233                 count = read(fd, r_buf, 1);
 234
 235                 if (count < 0) {
 236                         DBG("read failed");
 237                         close(fd);
 238                         return -1;
 239                 } else {
 240                         DBG("read size = %d", count);
 241                 }
 242
 243                 if (r_buf[0] == 'e') {
 244                         close(fd);
 245                         DBG("e is already written");
 246                         snprintf(t_buf, TEMP_BUFFER_LEN, "/sys/class/net/wlan0/queues/rx-%d/rps_cpus", curr);
 247                         DBG("Command : [%s]", t_buf);
 248                         continue;
 249                 } else {
 250                         DBG("writing e");
 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                 snprintf(t_buf, TEMP_BUFFER_LEN, "/sys/class/net/wlan0/queues/rx-%d/rps_cpus", curr);
 271                 DBG("Command : [%s]", t_buf);
 272         }
 273
 274         return 0;
 275 }
 276
 277 int netconfig_wifi_firmware(enum netconfig_wifi_firmware type, gboolean enable)
 278 {
 279         int err;
 280         static enum netconfig_wifi_firmware current_driver = NETCONFIG_WIFI_OFF;
 281         enum netconfig_wifi_firmware alias = type;
 282
 283         DBG("Wi-Fi current firmware %d (type: %d %s)", current_driver, type,
 284                                                         enable == TRUE ? "enable" : "disable");
 285
 286         if (enable == FALSE) {
 287                 if (current_driver == NETCONFIG_WIFI_OFF) {
 288                         return -EALREADY;
 289                 } else if (current_driver == alias) {
 290
 291                         err = __netconfig_wifi_firmware_stop(type);
 292                         if (err < 0 && err != -EALREADY)
 293                                 return err;
 294
 295                         current_driver = NETCONFIG_WIFI_OFF;
 296
 297                         return err;
 298                 }
 299
 300                 return -EIO;
 301         }
 302
 303         if (current_driver > NETCONFIG_WIFI_OFF) {
 304                 if (current_driver == alias)
 305                         return -EALREADY;
 306
 307                 return -EIO;
 308         }
 309
 310         err = __netconfig_wifi_firmware_start(type);
 311         if (err < 0)
 312                 DBG("Failed to execute script file");
 313         else
 314                 current_driver = alias;
 315
 316         if (__netconfig_set_rps_cpus() < 0)
 317                 DBG("Failed to set rps_cpus");
 318
 319         return err;
 320 }
 321
 322 gboolean handle_start(WifiFirmware *firmware, GDBusMethodInvocation *context, const gchar *device)
 323 {
 324         int err;
 325
 326         g_return_val_if_fail(firmware != NULL, TRUE);
 327
 328         DBG("Wi-Fi firmware start %s", device != NULL ? device : "null");
 329
 330         if (g_strcmp0("p2p", device) == 0)
 331                 err = netconfig_wifi_firmware(NETCONFIG_WIFI_P2P, TRUE);
 332         else if (g_strcmp0("softap", device) == 0)
 333                 err = netconfig_wifi_firmware(NETCONFIG_WIFI_SOFTAP, TRUE);
 334         else
 335                 err = -EINVAL;
 336
 337         if (err < 0) {
 338                 if (err == -EALREADY)
 339                         netconfig_error_already_exists(context);
 340                 else if (g_strcmp0("softap", device) == 0 && err == -EIO && netconfig_is_wifi_direct_on() == FALSE) {
 341                         if (netconfig_wifi_firmware(NETCONFIG_WIFI_P2P, FALSE) == 0 && netconfig_wifi_firmware(NETCONFIG_WIFI_SOFTAP, TRUE) == 0) {
 342                                 wifi_firmware_complete_start(firmware, context);
 343                                 return TRUE;
 344                         } else
 345                                 netconfig_error_wifi_driver_failed(context);
 346                 } else
 347                         netconfig_error_wifi_driver_failed(context);
 348
 349                 return TRUE;
 350         }
 351
 352         wifi_firmware_complete_start(firmware, context);
 353         return TRUE;
 354 }
 355
 356 gboolean handle_stop(WifiFirmware *firmware, GDBusMethodInvocation *context, const gchar *device)
 357 {
 358         int err;
 359
 360         g_return_val_if_fail(firmware != NULL, TRUE);
 361
 362         DBG("Wi-Fi firmware stop %s", device != NULL ? device : "null");
 363
 364         if (g_strcmp0("p2p", device) == 0)
 365                 err = netconfig_wifi_firmware(NETCONFIG_WIFI_P2P, FALSE);
 366         else if (g_strcmp0("softap", device) == 0)
 367                 err = netconfig_wifi_firmware(NETCONFIG_WIFI_SOFTAP, FALSE);
 368         else
 369                 err = -EINVAL;
 370
 371         if (err < 0) {
 372                 if (err == -EALREADY)
 373                         netconfig_error_already_exists(context);
 374                 else
 375                         netconfig_error_wifi_driver_failed(context);
 376
 377                 return TRUE;
 378         }
 379
 380         wifi_firmware_complete_stop(firmware, context);
 381         return TRUE;
 382 }