diff options
Diffstat (limited to 'synadhd/wpa_supplicant_8_lib/driver_cmd_wext.c')
| -rw-r--r-- | synadhd/wpa_supplicant_8_lib/driver_cmd_wext.c | 396 |
1 files changed, 396 insertions, 0 deletions
diff --git a/synadhd/wpa_supplicant_8_lib/driver_cmd_wext.c b/synadhd/wpa_supplicant_8_lib/driver_cmd_wext.c new file mode 100644 index 0000000..3734cb0 --- /dev/null +++ b/synadhd/wpa_supplicant_8_lib/driver_cmd_wext.c @@ -0,0 +1,396 @@ +/* + * Driver interaction with extended Linux Wireless Extensions + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Alternatively, this software may be distributed under the terms of BSD + * license. + * + */ + +#include "includes.h" +#include <sys/ioctl.h> +#include <net/if_arp.h> +#include <net/if.h> + +#include "linux_wext.h" +#include "common.h" +#include "driver.h" +#include "eloop.h" +#include "priv_netlink.h" +#include "driver_wext.h" +#include "ieee802_11_defs.h" +#include "wpa_common.h" +#include "wpa_ctrl.h" +#include "wpa_supplicant_i.h" +#include "config.h" +#include "linux_ioctl.h" +#include "scan.h" + +#include "driver_cmd_wext.h" +#ifdef ANDROID +#include "android_drv.h" +#endif /* ANDROID */ + +#define RSSI_CMD "RSSI" +#define LINKSPEED_CMD "LINKSPEED" + +/** + * wpa_driver_wext_set_scan_timeout - Set scan timeout to report scan completion + * @priv: Pointer to private wext data from wpa_driver_wext_init() + * + * This function can be used to set registered timeout when starting a scan to + * generate a scan completed event if the driver does not report this. + */ +static void wpa_driver_wext_set_scan_timeout(void *priv) +{ + struct wpa_driver_wext_data *drv = priv; + int timeout = 10; /* In case scan A and B bands it can be long */ + + /* Not all drivers generate "scan completed" wireless event, so try to + * read results after a timeout. */ + if (drv->scan_complete_events) { + /* + * The driver seems to deliver SIOCGIWSCAN events to notify + * when scan is complete, so use longer timeout to avoid race + * conditions with scanning and following association request. + */ + timeout = 30; + } + wpa_printf(MSG_DEBUG, "Scan requested - scan timeout %d seconds", + timeout); + eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx); + eloop_register_timeout(timeout, 0, wpa_driver_wext_scan_timeout, drv, + drv->ctx); +} + +/** + * wpa_driver_wext_combo_scan - Request the driver to initiate combo scan + * @priv: Pointer to private wext data from wpa_driver_wext_init() + * @params: Scan parameters + * Returns: 0 on success, -1 on failure + */ +int wpa_driver_wext_combo_scan(void *priv, struct wpa_driver_scan_params *params) +{ + char buf[WEXT_CSCAN_BUF_LEN]; + struct wpa_driver_wext_data *drv = priv; + struct iwreq iwr; + int ret, bp; + unsigned i; + + if (!drv->driver_is_started) { + wpa_printf(MSG_DEBUG, "%s: Driver stopped", __func__); + return 0; + } + + wpa_printf(MSG_DEBUG, "%s: Start", __func__); + + /* Set list of SSIDs */ + bp = WEXT_CSCAN_HEADER_SIZE; + os_memcpy(buf, WEXT_CSCAN_HEADER, bp); + for(i=0; i < params->num_ssids; i++) { + if ((bp + IW_ESSID_MAX_SIZE + 10) >= (int)sizeof(buf)) + break; + wpa_printf(MSG_DEBUG, "For Scan: %s", params->ssids[i].ssid); + buf[bp++] = WEXT_CSCAN_SSID_SECTION; + buf[bp++] = params->ssids[i].ssid_len; + os_memcpy(&buf[bp], params->ssids[i].ssid, params->ssids[i].ssid_len); + bp += params->ssids[i].ssid_len; + } + + /* Set list of channels */ + buf[bp++] = WEXT_CSCAN_CHANNEL_SECTION; + buf[bp++] = 0; + + /* Set passive dwell time (default is 250) */ + buf[bp++] = WEXT_CSCAN_PASV_DWELL_SECTION; + buf[bp++] = (u8)WEXT_CSCAN_PASV_DWELL_TIME; + buf[bp++] = (u8)(WEXT_CSCAN_PASV_DWELL_TIME >> 8); + + /* Set home dwell time (default is 40) */ + buf[bp++] = WEXT_CSCAN_HOME_DWELL_SECTION; + buf[bp++] = (u8)WEXT_CSCAN_HOME_DWELL_TIME; + buf[bp++] = (u8)(WEXT_CSCAN_HOME_DWELL_TIME >> 8); + + os_memset(&iwr, 0, sizeof(iwr)); + os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); + iwr.u.data.pointer = buf; + iwr.u.data.length = bp; + + if ((ret = ioctl(drv->ioctl_sock, SIOCSIWPRIV, &iwr)) < 0) { + if (!drv->bgscan_enabled) + wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (cscan): %d", ret); + else + ret = 0; /* Hide error in case of bg scan */ + } + return ret; +} + +static int wpa_driver_wext_set_cscan_params(char *buf, size_t buf_len, char *cmd) +{ + char *pasv_ptr; + int bp, i; + u16 pasv_dwell = WEXT_CSCAN_PASV_DWELL_TIME_DEF; + u8 channel; + + wpa_printf(MSG_DEBUG, "%s: %s", __func__, cmd); + + /* Get command parameters */ + pasv_ptr = os_strstr(cmd, ",TIME="); + if (pasv_ptr) { + *pasv_ptr = '\0'; + pasv_ptr += 6; + pasv_dwell = (u16)atoi(pasv_ptr); + if (pasv_dwell == 0) + pasv_dwell = WEXT_CSCAN_PASV_DWELL_TIME_DEF; + } + channel = (u8)atoi(cmd + 5); + + bp = WEXT_CSCAN_HEADER_SIZE; + os_memcpy(buf, WEXT_CSCAN_HEADER, bp); + + /* Set list of channels */ + buf[bp++] = WEXT_CSCAN_CHANNEL_SECTION; + buf[bp++] = channel; + if (channel != 0) { + i = (pasv_dwell - 1) / WEXT_CSCAN_PASV_DWELL_TIME_DEF; + for (; i > 0; i--) { + if ((size_t)(bp + 12) >= buf_len) + break; + buf[bp++] = WEXT_CSCAN_CHANNEL_SECTION; + buf[bp++] = channel; + } + } else { + if (pasv_dwell > WEXT_CSCAN_PASV_DWELL_TIME_MAX) + pasv_dwell = WEXT_CSCAN_PASV_DWELL_TIME_MAX; + } + + /* Set passive dwell time (default is 250) */ + buf[bp++] = WEXT_CSCAN_PASV_DWELL_SECTION; + if (channel != 0) { + buf[bp++] = (u8)WEXT_CSCAN_PASV_DWELL_TIME_DEF; + buf[bp++] = (u8)(WEXT_CSCAN_PASV_DWELL_TIME_DEF >> 8); + } else { + buf[bp++] = (u8)pasv_dwell; + buf[bp++] = (u8)(pasv_dwell >> 8); + } + + /* Set home dwell time (default is 40) */ + buf[bp++] = WEXT_CSCAN_HOME_DWELL_SECTION; + buf[bp++] = (u8)WEXT_CSCAN_HOME_DWELL_TIME; + buf[bp++] = (u8)(WEXT_CSCAN_HOME_DWELL_TIME >> 8); + + /* Set cscan type */ + buf[bp++] = WEXT_CSCAN_TYPE_SECTION; + buf[bp++] = WEXT_CSCAN_TYPE_PASSIVE; + return bp; +} + +static char *wpa_driver_get_country_code(int channels) +{ + char *country = "US"; /* WEXT_NUMBER_SCAN_CHANNELS_FCC */ + + if (channels == WEXT_NUMBER_SCAN_CHANNELS_ETSI) + country = "EU"; + else if( channels == WEXT_NUMBER_SCAN_CHANNELS_MKK1) + country = "JP"; + return country; +} + +static int wpa_driver_set_backgroundscan_params(void *priv) +{ + struct wpa_driver_wext_data *drv = priv; + struct wpa_supplicant *wpa_s; + struct iwreq iwr; + int ret = 0, i = 0, bp; + char buf[WEXT_PNO_MAX_COMMAND_SIZE]; + struct wpa_ssid *ssid_conf; + + if (drv == NULL) { + wpa_printf(MSG_ERROR, "%s: drv is NULL. Exiting", __func__); + return -1; + } + if (drv->ctx == NULL) { + wpa_printf(MSG_ERROR, "%s: drv->ctx is NULL. Exiting", __func__); + return -1; + } + wpa_s = (struct wpa_supplicant *)(drv->ctx); + if (wpa_s->conf == NULL) { + wpa_printf(MSG_ERROR, "%s: wpa_s->conf is NULL. Exiting", __func__); + return -1; + } + ssid_conf = wpa_s->conf->ssid; + + bp = WEXT_PNOSETUP_HEADER_SIZE; + os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); + buf[bp++] = WEXT_PNO_TLV_PREFIX; + buf[bp++] = WEXT_PNO_TLV_VERSION; + buf[bp++] = WEXT_PNO_TLV_SUBVERSION; + buf[bp++] = WEXT_PNO_TLV_RESERVED; + + while ((i < WEXT_PNO_AMOUNT) && (ssid_conf != NULL)) { + /* Check that there is enough space needed for 1 more SSID, the other sections and null termination */ + if ((bp + WEXT_PNO_SSID_HEADER_SIZE + IW_ESSID_MAX_SIZE + WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int)sizeof(buf)) + break; + if ((!ssid_conf->disabled) && (ssid_conf->ssid_len <= IW_ESSID_MAX_SIZE)){ + wpa_printf(MSG_DEBUG, "For PNO Scan: %s", ssid_conf->ssid); + buf[bp++] = WEXT_PNO_SSID_SECTION; + buf[bp++] = ssid_conf->ssid_len; + os_memcpy(&buf[bp], ssid_conf->ssid, ssid_conf->ssid_len); + bp += ssid_conf->ssid_len; + i++; + } + ssid_conf = ssid_conf->next; + } + + buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; + os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", WEXT_PNO_SCAN_INTERVAL); + bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; + + buf[bp++] = WEXT_PNO_REPEAT_SECTION; + os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", WEXT_PNO_REPEAT); + bp += WEXT_PNO_REPEAT_LENGTH; + + buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; + os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", WEXT_PNO_MAX_REPEAT); + bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; + + os_memset(&iwr, 0, sizeof(iwr)); + os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); + iwr.u.data.pointer = buf; + iwr.u.data.length = bp; + + ret = ioctl(drv->ioctl_sock, SIOCSIWPRIV, &iwr); + + if (ret < 0) { + wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", ret); + drv->errors++; + if (drv->errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { + drv->errors = 0; + wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); + } + } else { + drv->errors = 0; + } + return ret; + +} + +int wpa_driver_wext_driver_cmd( void *priv, char *cmd, char *buf, size_t buf_len ) +{ + struct wpa_driver_wext_data *drv = priv; + struct wpa_supplicant *wpa_s = (struct wpa_supplicant *)(drv->ctx); + struct iwreq iwr; + int ret = 0, flags; + + wpa_printf(MSG_DEBUG, "%s %s len = %d", __func__, cmd, buf_len); + + if (!drv->driver_is_started && (os_strcasecmp(cmd, "START") != 0)) { + wpa_printf(MSG_ERROR,"WEXT: Driver not initialized yet"); + return -1; + } + + if (os_strcasecmp(cmd, "RSSI-APPROX") == 0) { + os_strlcpy(cmd, RSSI_CMD, MAX_DRV_CMD_SIZE); + } else if( os_strncasecmp(cmd, "SCAN-CHANNELS", 13) == 0 ) { + int no_of_chan; + + no_of_chan = atoi(cmd + 13); + os_snprintf(cmd, MAX_DRV_CMD_SIZE, "COUNTRY %s", + wpa_driver_get_country_code(no_of_chan)); + } else if (os_strcasecmp(cmd, "STOP") == 0) { + linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 0); + } else if( os_strcasecmp(cmd, "RELOAD") == 0 ) { + wpa_printf(MSG_DEBUG,"Reload command"); + wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); + return ret; + } else if( os_strcasecmp(cmd, "BGSCAN-START") == 0 ) { + ret = wpa_driver_set_backgroundscan_params(priv); + if (ret < 0) { + return ret; + } + os_strlcpy(cmd, "PNOFORCE 1", MAX_DRV_CMD_SIZE); + drv->bgscan_enabled = 1; + } else if( os_strcasecmp(cmd, "BGSCAN-STOP") == 0 ) { + os_strlcpy(cmd, "PNOFORCE 0", MAX_DRV_CMD_SIZE); + drv->bgscan_enabled = 0; + } + + os_memset(&iwr, 0, sizeof(iwr)); + os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); + os_memcpy(buf, cmd, strlen(cmd) + 1); + iwr.u.data.pointer = buf; + iwr.u.data.length = buf_len; + + if( os_strncasecmp(cmd, "CSCAN", 5) == 0 ) { + if (!wpa_s->scanning && ((wpa_s->wpa_state <= WPA_SCANNING) || + (wpa_s->wpa_state >= WPA_COMPLETED))) { + iwr.u.data.length = wpa_driver_wext_set_cscan_params(buf, buf_len, cmd); + } else { + wpa_printf(MSG_ERROR, "Ongoing Scan action..."); + return ret; + } + } + + ret = ioctl(drv->ioctl_sock, SIOCSIWPRIV, &iwr); + + if (ret < 0) { + wpa_printf(MSG_ERROR, "%s failed (%d): %s", __func__, ret, cmd); + drv->errors++; + if (drv->errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { + drv->errors = 0; + wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); + } + } else { + drv->errors = 0; + ret = 0; + if ((os_strcasecmp(cmd, RSSI_CMD) == 0) || + (os_strcasecmp(cmd, LINKSPEED_CMD) == 0) || + (os_strcasecmp(cmd, "MACADDR") == 0) || + (os_strcasecmp(cmd, "GETPOWER") == 0) || + (os_strcasecmp(cmd, "GETBAND") == 0)) { + ret = strlen(buf); + } else if (os_strcasecmp(cmd, "START") == 0) { + drv->driver_is_started = TRUE; + linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1); + /* os_sleep(0, WPA_DRIVER_WEXT_WAIT_US); + wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STARTED"); */ + } else if (os_strcasecmp(cmd, "STOP") == 0) { + drv->driver_is_started = FALSE; + /* wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STOPPED"); */ + } else if (os_strncasecmp(cmd, "CSCAN", 5) == 0) { + wpa_driver_wext_set_scan_timeout(priv); + wpa_supplicant_notify_scanning(wpa_s, 1); + } + wpa_printf(MSG_DEBUG, "%s %s len = %d, %d", __func__, buf, ret, strlen(buf)); + } + return ret; +} + +int wpa_driver_signal_poll(void *priv, struct wpa_signal_info *si) +{ + char buf[MAX_DRV_CMD_SIZE]; + struct wpa_driver_wext_data *drv = priv; + char *prssi; + int res; + + os_memset(si, 0, sizeof(*si)); + res = wpa_driver_wext_driver_cmd(priv, RSSI_CMD, buf, sizeof(buf)); + /* Answer: SSID rssi -Val */ + if (res < 0) + return res; + prssi = strcasestr(buf, RSSI_CMD); + if (!prssi) + return -1; + si->current_signal = atoi(prssi + strlen(RSSI_CMD) + 1); + + res = wpa_driver_wext_driver_cmd(priv, LINKSPEED_CMD, buf, sizeof(buf)); + /* Answer: LinkSpeed Val */ + if (res < 0) + return res; + si->current_txrate = atoi(buf + strlen(LINKSPEED_CMD) + 1) * 1000; + + return 0; +} |