#endif
#define WIFI_DRIVER_LOADER_DELAY 1000000
+#define SYSFS_PATH_MAX 256
static const char IFACE_DIR[] = "/data/system/wpa_supplicant";
#ifdef WIFI_DRIVER_MODULE_PATH
-static const char DRIVER_MODULE_NAME[] = WIFI_DRIVER_MODULE_NAME;
-static const char DRIVER_MODULE_TAG[] = WIFI_DRIVER_MODULE_NAME " ";
-static const char DRIVER_MODULE_PATH[] = WIFI_DRIVER_MODULE_PATH;
+static const char DRIVER_NAME_PROP[] = "wlan.modname";
+static const char DRIVER_PATH_PROP[] = "wlan.modpath";
static const char DRIVER_MODULE_ARG[] = WIFI_DRIVER_MODULE_ARG;
#endif
static const char FIRMWARE_LOADER[] = WIFI_FIRMWARE_LOADER;
static const char P2P_CONFIG_FILE[] = "/data/misc/wifi/p2p_supplicant.conf";
static const char CONTROL_IFACE_PATH[] = "/data/misc/wifi/sockets";
static const char MODULE_FILE[] = "/proc/modules";
+static const char SYSFS_CLASS_NET[] = "/sys/class/net";
+static const char MODULE_DEFAULT_DIR[] = "/system/lib/modules";
+static const char SYS_MOD_NAME_DIR[] = "device/driver/module";
static const char IFNAME[] = "IFNAME=";
#define IFNAMELEN (sizeof(IFNAME) - 1)
return dhcp_lasterror();
}
+#ifdef WIFI_DRIVER_STATE_CTRL_PARAM
+int wifi_change_driver_state(const char *state)
+{
+ int len;
+ int fd;
+ int ret = 0;
+
+ if (!state)
+ return -1;
+ fd = TEMP_FAILURE_RETRY(open(WIFI_DRIVER_STATE_CTRL_PARAM, O_WRONLY));
+ if (fd < 0) {
+ ALOGE("Failed to open driver state control param (%s)", strerror(errno));
+ return -1;
+ }
+ len = strlen(state) + 1;
+ if (TEMP_FAILURE_RETRY(write(fd, state, len)) != len) {
+ ALOGE("Failed to write driver state control param (%s)", strerror(errno));
+ ret = -1;
+ }
+ close(fd);
+ return ret;
+}
+#endif
+
+#ifdef WIFI_DRIVER_MODULE_PATH
+static int get_driver_path(const char *mod, const char *path, char *buf) {
+ DIR *dir;
+ struct dirent *de;
+ char modpath[SYSFS_PATH_MAX];
+ int ret = 0;
+
+ if ((dir = opendir(path))) {
+ while ((de = readdir(dir))) {
+ struct stat sb;
+ if (de->d_name[0] == '.')
+ continue;
+ snprintf(modpath, SYSFS_PATH_MAX, "%s/%s", path, de->d_name);
+ if (!strcmp(de->d_name, mod)) {
+ strncpy(buf, modpath, SYSFS_PATH_MAX - 1);
+ buf[SYSFS_PATH_MAX - 1] = '\0';
+ ret = 1;
+ break;
+ }
+ if (!stat(modpath, &sb) && (sb.st_mode & S_IFMT) == S_IFDIR)
+ if ((ret = get_driver_path(mod, modpath, buf)))
+ break;
+ }
+ closedir(dir);
+ }
+ return ret;
+}
+
+static int get_driver_info(char *buf) {
+ DIR *netdir;
+ struct dirent *de;
+ char path[SYSFS_PATH_MAX];
+ char link[SYSFS_PATH_MAX];
+ int ret = 0;
+
+ if ((netdir = opendir(SYSFS_CLASS_NET))) {
+ while ((de = readdir(netdir))) {
+ int cnt;
+ char *pos;
+ if (de->d_name[0] == '.')
+ continue;
+ snprintf(path, SYSFS_PATH_MAX, "%s/%s/wireless", SYSFS_CLASS_NET, de->d_name);
+ if (access(path, F_OK)) {
+ snprintf(path, SYSFS_PATH_MAX, "%s/%s/phy80211", SYSFS_CLASS_NET, de->d_name);
+ if (access(path, F_OK))
+ continue;
+ }
+ /* found the wifi interface */
+ property_set("wlan.interface", de->d_name);
+ snprintf(path, SYSFS_PATH_MAX, "%s/%s/%s", SYSFS_CLASS_NET, de->d_name, SYS_MOD_NAME_DIR);
+ if ((cnt = readlink(path, link, SYSFS_PATH_MAX - 1)) < 0) {
+ ALOGW("can not find link of %s", path);
+ continue;
+ }
+ link[cnt] = '\0';
+ if ((pos = strrchr(link, '/'))) {
+ property_set(DRIVER_NAME_PROP, ++pos);
+ strncpy(buf, pos, PROPERTY_VALUE_MAX - 1);
+ buf[PROPERTY_VALUE_MAX - 1] = '\0';
+ ret = 1;
+ break;
+ }
+ }
+ closedir(netdir);
+ }
+
+ return ret;
+}
+#endif
+
int is_wifi_driver_loaded() {
- char driver_status[PROPERTY_VALUE_MAX];
#ifdef WIFI_DRIVER_MODULE_PATH
+ char modname[PROPERTY_VALUE_MAX];
+ char line[PROPERTY_VALUE_MAX];
FILE *proc;
- char line[sizeof(DRIVER_MODULE_TAG)+10];
-#endif
+ int cnt = property_get(DRIVER_NAME_PROP, modname, NULL);
- if (!property_get(DRIVER_PROP_NAME, driver_status, NULL)
- || strcmp(driver_status, "ok") != 0) {
- return 0; /* driver not loaded */
+ if (!cnt) {
+ if (get_driver_info(modname))
+ cnt = strlen(modname);
+ else if (property_get("wlan.interface", line, NULL))
+ return 1; // found an interface without modname, assume built-in
+ else
+ goto unloaded;
}
-#ifdef WIFI_DRIVER_MODULE_PATH
+ modname[cnt++] = ' ';
+
/*
* If the property says the driver is loaded, check to
* make sure that the property setting isn't just left
*/
if ((proc = fopen(MODULE_FILE, "r")) == NULL) {
ALOGW("Could not open %s: %s", MODULE_FILE, strerror(errno));
- property_set(DRIVER_PROP_NAME, "unloaded");
- return 0;
+ goto unloaded;
}
+
while ((fgets(line, sizeof(line), proc)) != NULL) {
- if (strncmp(line, DRIVER_MODULE_TAG, strlen(DRIVER_MODULE_TAG)) == 0) {
+ if (strncmp(line, modname, cnt) == 0) {
fclose(proc);
return 1;
}
}
fclose(proc);
+
+unloaded:
property_set(DRIVER_PROP_NAME, "unloaded");
return 0;
#else
{
#ifdef WIFI_DRIVER_MODULE_PATH
char driver_status[PROPERTY_VALUE_MAX];
+ char modname[PROPERTY_VALUE_MAX];
+ char modpath[SYSFS_PATH_MAX];
int count = 100; /* wait at most 20 seconds for completion */
if (is_wifi_driver_loaded()) {
return 0;
}
- if (insmod(DRIVER_MODULE_PATH, DRIVER_MODULE_ARG) < 0)
+ if (!property_get(DRIVER_PATH_PROP, modpath, NULL)) {
+ property_get(DRIVER_NAME_PROP, modname, NULL);
+ strcat(modname, ".ko");
+ if (!get_driver_path(modname, MODULE_DEFAULT_DIR, modpath))
+ strcpy(modpath, WIFI_DRIVER_MODULE_PATH);
+ }
+
+ ALOGI("got module path %s", modpath);
+ if (insmod(modpath, DRIVER_MODULE_ARG) < 0)
return -1;
if (strcmp(FIRMWARE_LOADER,"") == 0) {
sched_yield();
while (count-- > 0) {
if (property_get(DRIVER_PROP_NAME, driver_status, NULL)) {
- if (strcmp(driver_status, "ok") == 0)
+ if (strcmp(driver_status, "ok") == 0) {
+ get_driver_info(modname);
return 0;
- else if (strcmp(DRIVER_PROP_NAME, "failed") == 0) {
+ } else if (strcmp(driver_status, "failed") == 0) {
wifi_unload_driver();
return -1;
}
wifi_unload_driver();
return -1;
#else
+#ifdef WIFI_DRIVER_STATE_CTRL_PARAM
+ if (is_wifi_driver_loaded()) {
+ return 0;
+ }
+
+ if (wifi_change_driver_state(WIFI_DRIVER_STATE_ON) < 0)
+ return -1;
+#endif
property_set(DRIVER_PROP_NAME, "ok");
return 0;
#endif
{
usleep(200000); /* allow to finish interface down */
#ifdef WIFI_DRIVER_MODULE_PATH
- if (rmmod(DRIVER_MODULE_NAME) == 0) {
+ char modname[PROPERTY_VALUE_MAX];
+ if (property_get("wlan.no-unload-driver", modname, NULL)
+ && strcmp(modname, "1") == 0)
+ return 0;
+ if (!property_get(DRIVER_NAME_PROP, modname, NULL))
+ return -1;
+
+ if (rmmod(modname) == 0) {
int count = 20; /* wait at most 10 seconds for completion */
while (count-- > 0) {
if (!is_wifi_driver_loaded())
if (count) {
return 0;
}
- return -1;
- } else
- return -1;
+ }
+ return -1;
#else
+#ifdef WIFI_DRIVER_STATE_CTRL_PARAM
+ if (is_wifi_driver_loaded()) {
+ if (wifi_change_driver_state(WIFI_DRIVER_STATE_OFF) < 0)
+ return -1;
+ }
+#endif
property_set(DRIVER_PROP_NAME, "unloaded");
return 0;
#endif
if (pi != NULL) {
serial = __system_property_serial(pi);
}
- property_get("wifi.interface", primary_iface, WIFI_TEST_INTERFACE);
+ property_get("wlan.interface", primary_iface, WIFI_TEST_INTERFACE);
property_set("ctl.start", supplicant_name);
sched_yield();
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