/** @file mlan_scan.c
*
* @brief Functions implementing wlan scan IOCTL and firmware command APIs
*
* IOCTL handlers as well as command preparation and response routines
* for sending scan commands to the firmware.
*
* Copyright (C) 2008-2017, Marvell International Ltd.
*
* This software file (the "File") is distributed by Marvell International
* Ltd. under the terms of the GNU General Public License Version 2, June 1991
* (the "License"). You may use, redistribute and/or modify this File in
* accordance with the terms and conditions of the License, a copy of which
* is available by writing to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
*
* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
* this warranty disclaimer.
*/
/******************************************************
Change log:
10/28/2008: initial version
******************************************************/
#include "mlan.h"
#include "mlan_join.h"
#include "mlan_util.h"
#include "mlan_fw.h"
#include "mlan_main.h"
#include "mlan_11n.h"
#include "mlan_11h.h"
#ifdef DRV_EMBEDDED_SUPPLICANT
#include "authenticator_api.h"
#endif
/********************************************************
Local Constants
********************************************************/
#define MRVDRV_MAX_CHANNELS_PER_SCAN 40
/** The maximum number of channels the firmware can scan per command */
#define MRVDRV_MAX_CHANNELS_PER_SPECIFIC_SCAN 4
/**
* Number of channels to scan per firmware scan command issuance.
*
* Number restricted to prevent hitting the limit on the amount of scan data
* returned in a single firmware scan command.
*/
#define MRVDRV_CHANNELS_PER_SCAN_CMD 4
/** Memory needed to store a max sized Channel List TLV for a firmware scan */
#define CHAN_TLV_MAX_SIZE (sizeof(MrvlIEtypesHeader_t) \
+ (MRVDRV_MAX_CHANNELS_PER_SPECIFIC_SCAN \
* sizeof(ChanScanParamSet_t)))
/** Memory needed to store supported rate */
#define RATE_TLV_MAX_SIZE (sizeof(MrvlIEtypes_RatesParamSet_t) + HOSTCMD_SUPPORTED_RATES)
/** Memory needed to store a max number/size WildCard
* SSID TLV for a firmware scan */
#define WILDCARD_SSID_TLV_MAX_SIZE \
(MRVDRV_MAX_SSID_LIST_LENGTH * \
(sizeof(MrvlIEtypes_WildCardSsIdParamSet_t) + \
MRVDRV_MAX_SSID_LENGTH))
/** WPS TLV MAX size is MAX IE size plus 2 bytes for
* t_u16 MRVL TLV extension */
#define WPS_TLV_MAX_SIZE (sizeof(IEEEtypes_VendorSpecific_t) + 2)
/** Maximum memory needed for a wlan_scan_cmd_config
* with all TLVs at max */
#define MAX_SCAN_CFG_ALLOC (sizeof(wlan_scan_cmd_config) \
+ sizeof(MrvlIEtypes_NumProbes_t) \
+ sizeof(MrvlIETypes_HTCap_t) \
+ CHAN_TLV_MAX_SIZE \
+ RATE_TLV_MAX_SIZE \
+ WILDCARD_SSID_TLV_MAX_SIZE \
+ WPS_TLV_MAX_SIZE)
/********************************************************
Local Variables
********************************************************/
/**
* Interally used to send a configured scan cmd between
* driver routines
*/
typedef union {
/** Scan configuration (variable length) */
wlan_scan_cmd_config config;
/** Max allocated block */
t_u8 config_alloc_buf[MAX_SCAN_CFG_ALLOC];
} wlan_scan_cmd_config_tlv;
/********************************************************
Global Variables
********************************************************/
/********************************************************
Local Functions
********************************************************/
/** Cipher suite definition */
enum cipher_suite {
CIPHER_SUITE_WEP40,
CIPHER_SUITE_TKIP,
CIPHER_SUITE_CCMP,
CIPHER_SUITE_WEP104,
CIPHER_SUITE_MAX
};
static t_u8 wpa_oui[CIPHER_SUITE_MAX][4] = {
{0x00, 0x50, 0xf2, 0x01}, /* WEP40 */
{0x00, 0x50, 0xf2, 0x02}, /* TKIP */
{0x00, 0x50, 0xf2, 0x04}, /* AES */
{0x00, 0x50, 0xf2, 0x05}, /* WEP104 */
};
static t_u8 rsn_oui[CIPHER_SUITE_MAX][4] = {
{0x00, 0x0f, 0xac, 0x01}, /* WEP40 */
{0x00, 0x0f, 0xac, 0x02}, /* TKIP */
{0x00, 0x0f, 0xac, 0x04}, /* AES */
{0x00, 0x0f, 0xac, 0x05}, /* WEP104 */
};
/**
* @brief Convert radio type scan parameter to a band config used in join cmd
*
* @param radio_type Scan parameter indicating the radio used for a channel
* in a scan command.
*
* @return Band type conversion of scanBand used in join/assoc cmds
*
*/
t_u8
radio_type_to_band(t_u8 radio_type)
{
t_u8 ret_band;
switch (radio_type) {
case BAND_5GHZ:
ret_band = BAND_A;
break;
case BAND_2GHZ:
default:
ret_band = BAND_G;
break;
}
return ret_band;
}
/**
* @brief This function will update the channel statistics from scan result
*
* @param pmpriv A pointer to mlan_private structure
* @param pchanstats_tlv A pointer to MrvlIEtypes_ChannelStats_t tlv
*
* @return NA
*/
void
wlan_update_chan_statistics(mlan_private *pmpriv,
MrvlIEtypes_ChannelStats_t *pchanstats_tlv)
{
mlan_adapter *pmadapter = pmpriv->adapter;
t_u8 i;
ChanStatistics_t *pchan_stats =
(ChanStatistics_t *)((t_u8 *)pchanstats_tlv +
sizeof(MrvlIEtypesHeader_t));
t_u8 num_chan =
wlan_le16_to_cpu(pchanstats_tlv->header.len) /
sizeof(ChanStatistics_t);
ENTER();
for (i = 0; i < num_chan; i++) {
if (pmadapter->idx_chan_stats >= pmadapter->num_in_chan_stats) {
PRINTM(MERROR,
"Over flow: idx_chan_stats=%d, num_in_chan_stats=%d\n",
pmadapter->idx_chan_stats,
pmadapter->num_in_chan_stats);
break;
}
pchan_stats->total_networks =
wlan_le16_to_cpu(pchan_stats->total_networks);
pchan_stats->cca_scan_duration =
wlan_le16_to_cpu(pchan_stats->cca_scan_duration);
pchan_stats->cca_busy_duration =
wlan_le16_to_cpu(pchan_stats->cca_busy_duration);
PRINTM(MCMND,
"chan=%d, noise=%d, total_network=%d scan_duration=%d, busy_duration=%d\n",
pchan_stats->chan_num, pchan_stats->noise,
pchan_stats->total_networks,
pchan_stats->cca_scan_duration,
pchan_stats->cca_busy_duration);
memcpy(pmadapter,
&pmadapter->pchan_stats[pmadapter->idx_chan_stats],
pchan_stats, sizeof(ChanStatistics_t));
pmadapter->idx_chan_stats++;
pchan_stats++;
}
LEAVE();
return;
}
/**
* @brief This function will parse a given IE for a given OUI
*
* Parse a given WPA/RSN IE to find if it has a given oui in PTK,
* if no OUI found for PTK it returns 0.
*
* @param pbss_desc A pointer to current BSS descriptor
* @return 0 on failure to find OUI, 1 on success.
*/
static t_u8
search_oui_in_ie(mlan_adapter *pmadapter, IEBody *ie_body, t_u8 *oui)
{
t_u8 count;
count = ie_body->PtkCnt[0];
ENTER();
/* There could be multiple OUIs for PTK hence
* 1) Take the length.
* 2) Check all the OUIs for AES.
* 3) If one of them is AES then pass success.
*/
while (count) {
if (!memcmp
(pmadapter, ie_body->PtkBody, oui,
sizeof(ie_body->PtkBody))) {
LEAVE();
return MLAN_OUI_PRESENT;
}
--count;
if (count) {
ie_body = (IEBody *)((t_u8 *)ie_body +
sizeof(ie_body->PtkBody));
}
}
PRINTM(MINFO, "The OUI %x:%x:%x:%x is not found in PTK\n", oui[0],
oui[1], oui[2], oui[3]);
LEAVE();
return MLAN_OUI_NOT_PRESENT;
}
/**
* @brief This function will pass the correct ie and oui to search_oui_in_ie
*
* Check the pbss_desc for appropriate IE and then check if RSN IE has AES
* OUI in it. If RSN IE does not have AES in PTK then return 0;
*
* @param pbss_desc A pointer to current BSS descriptor
* @return 0 on failure to find AES OUI, 1 on success.
*/
static t_u8
is_rsn_oui_present(mlan_adapter *pmadapter, BSSDescriptor_t *pbss_desc,
t_u32 cipher_suite)
{
t_u8 *oui = MNULL;
IEBody *ie_body = MNULL;
t_u8 ret = MLAN_OUI_NOT_PRESENT;
ENTER();
if (((pbss_desc->prsn_ie) &&
((*(pbss_desc->prsn_ie)).ieee_hdr.element_id == RSN_IE))) {
ie_body =
(IEBody *)(((t_u8 *)pbss_desc->prsn_ie->data) +
RSN_GTK_OUI_OFFSET);
oui = &rsn_oui[cipher_suite][0];
ret = search_oui_in_ie(pmadapter, ie_body, oui);
if (ret) {
LEAVE();
return ret;
}
}
LEAVE();
return ret;
}
/**
* @brief This function will pass the correct ie and oui to search_oui_in_ie
*
* Check the pbss_desc for appropriate IE and then check if WPA IE has AES
* OUI in it. If WPA IE does not have AES in PTK then return 0;
*
* @param pbss_desc A pointer to current BSS descriptor
* @return 0 on failure to find AES OUI, 1 on success.
*/
static t_u8
is_wpa_oui_present(mlan_adapter *pmadapter, BSSDescriptor_t *pbss_desc,
t_u32 cipher_suite)
{
t_u8 *oui = MNULL;
IEBody *ie_body = MNULL;
t_u8 ret = MLAN_OUI_NOT_PRESENT;
ENTER();
if (((pbss_desc->pwpa_ie) &&
((*(pbss_desc->pwpa_ie)).vend_hdr.element_id == WPA_IE))) {
ie_body = (IEBody *)pbss_desc->pwpa_ie->data;
oui = &wpa_oui[cipher_suite][0];
ret = search_oui_in_ie(pmadapter, ie_body, oui);
if (ret) {
LEAVE();
return ret;
}
}
LEAVE();
return ret;
}
/**
* @brief compare config band and a band from the scan result,
* which is defined by functiion radio_type_to_band(t_u8 radio_type) above
*
* @param cfg_band: band configured
* scan_band: band from scan result
*
* @return matched: non-zero. unmatched: 0
*
*/
static t_u8
wlan_is_band_compatible(t_u8 cfg_band, t_u8 scan_band)
{
t_u8 band;
switch (scan_band) {
case BAND_A:
band = BAND_A | BAND_AN;
break;
case BAND_G:
default:
band = BAND_B | BAND_G | BAND_GN;
}
return cfg_band & band;
}
/**
* @brief This function finds the best SSID in the Scan List
*
* Search the scan table for the best SSID that also matches the current
* adapter network preference (infrastructure or adhoc)
*
* @param pmpriv A pointer to mlan_private structure
* @return index in BSSID list
*/
static t_s32
wlan_find_best_network_in_list(IN mlan_private *pmpriv)
{
mlan_adapter *pmadapter = pmpriv->adapter;
t_u32 mode = pmpriv->bss_mode;
t_s32 best_net = -1;
t_s32 best_rssi = 0;
t_u32 i;
ENTER();
PRINTM(MINFO, "Num of BSSIDs = %d\n", pmadapter->num_in_scan_table);
for (i = 0; i < pmadapter->num_in_scan_table; i++) {
switch (mode) {
case MLAN_BSS_MODE_INFRA:
case MLAN_BSS_MODE_IBSS:
if (wlan_is_network_compatible(pmpriv, i, mode) >= 0) {
if (SCAN_RSSI(pmadapter->pscan_table[i].rssi) >
best_rssi) {
best_rssi =
SCAN_RSSI(pmadapter->
pscan_table[i].rssi);
best_net = i;
}
}
break;
case MLAN_BSS_MODE_AUTO:
default:
if (SCAN_RSSI(pmadapter->pscan_table[i].rssi) >
best_rssi) {
best_rssi =
SCAN_RSSI(pmadapter->pscan_table[i].
rssi);
best_net = i;
}
break;
}
}
LEAVE();
return best_net;
}
/**
* @brief Create a channel list for the driver to scan based on region info
*
* Use the driver region/band information to construct a comprehensive list
* of channels to scan. This routine is used for any scan that is not
* provided a specific channel list to scan.
*
* @param pmpriv A pointer to mlan_private structure
* @param puser_scan_in MNULL or pointer to scan configuration parameters
* @param pscan_chan_list Output parameter: Resulting channel list to scan
* @param filtered_scan Flag indicating whether or not a BSSID or SSID filter
* is being sent in the command to firmware. Used to
* increase the number of channels sent in a scan
* command and to disable the firmware channel scan
* filter.
*
* @return N/A
*/
static t_void
wlan_scan_create_channel_list(IN mlan_private *pmpriv,
IN const wlan_user_scan_cfg *puser_scan_in,
OUT ChanScanParamSet_t *pscan_chan_list,
IN t_u8 filtered_scan)
{
mlan_adapter *pmadapter = pmpriv->adapter;
region_chan_t *pscan_region;
chan_freq_power_t *cfp;
t_u32 region_idx;
t_u32 chan_idx = 0;
t_u32 next_chan;
t_u8 scan_type;
t_u8 radio_type;
ENTER();
for (region_idx = 0;
region_idx < NELEMENTS(pmadapter->region_channel); region_idx++) {
if (wlan_11d_is_enabled(pmpriv) &&
pmpriv->media_connected != MTRUE) {
/* Scan all the supported chan for the first scan */
if (!pmadapter->universal_channel[region_idx].valid)
continue;
pscan_region =
&pmadapter->universal_channel[region_idx];
} else {
if (!pmadapter->region_channel[region_idx].valid)
continue;
pscan_region = &pmadapter->region_channel[region_idx];
}
if (puser_scan_in && !puser_scan_in->chan_list[0].chan_number &&
puser_scan_in->chan_list[0].radio_type & BAND_SPECIFIED) {
radio_type =
puser_scan_in->chan_list[0].
radio_type & ~BAND_SPECIFIED;
if (!radio_type && (pscan_region->band != BAND_B) &&
(pscan_region->band != BAND_G))
continue;
if (radio_type && (pscan_region->band != BAND_A))
continue;
}
if (!wlan_is_band_compatible
(pmpriv->config_bands | pmadapter->adhoc_start_band,
pscan_region->band))
continue;
for (next_chan = 0;
next_chan < pscan_region->num_cfp;
next_chan++, chan_idx++) {
/* Set the default scan type to the user specified type, will later
* be changed to passive on a per channel basis if restricted by
* regulatory requirements (11d or 11h)
*/
scan_type = pmadapter->scan_type;
cfp = pscan_region->pcfp + next_chan;
switch (pscan_region->band) {
case BAND_A:
pscan_chan_list[chan_idx].bandcfg.chanBand =
BAND_5GHZ;
/* Passive scan on DFS channels */
if (wlan_11h_radar_detect_required
(pmpriv, (t_u8)cfp->channel))
scan_type = MLAN_SCAN_TYPE_PASSIVE;
break;
case BAND_B:
case BAND_G:
if (wlan_bg_scan_type_is_passive
(pmpriv, (t_u8)cfp->channel)) {
scan_type = MLAN_SCAN_TYPE_PASSIVE;
}
pscan_chan_list[chan_idx].bandcfg.chanBand =
BAND_2GHZ;
break;
default:
pscan_chan_list[chan_idx].bandcfg.chanBand =
BAND_2GHZ;
break;
}
if (puser_scan_in &&
puser_scan_in->chan_list[0].scan_time) {
pscan_chan_list[chan_idx].max_scan_time =
wlan_cpu_to_le16((t_u16)puser_scan_in->
chan_list[0].
scan_time);
} else if (scan_type == MLAN_SCAN_TYPE_PASSIVE) {
pscan_chan_list[chan_idx].max_scan_time =
wlan_cpu_to_le16(pmadapter->
passive_scan_time);
} else if (filtered_scan) {
pscan_chan_list[chan_idx].max_scan_time =
wlan_cpu_to_le16(pmadapter->
specific_scan_time);
} else {
pscan_chan_list[chan_idx].max_scan_time =
wlan_cpu_to_le16(pmadapter->
active_scan_time);
}
if (scan_type == MLAN_SCAN_TYPE_PASSIVE) {
pscan_chan_list[chan_idx].chan_scan_mode.
passive_scan = MTRUE;
pscan_chan_list[chan_idx].chan_scan_mode.
hidden_ssid_report = MTRUE;
} else {
pscan_chan_list[chan_idx].chan_scan_mode.
passive_scan = MFALSE;
}
pscan_chan_list[chan_idx].chan_number =
(t_u8)cfp->channel;
if (filtered_scan) {
pscan_chan_list[chan_idx].chan_scan_mode.
disable_chan_filt = MTRUE;
}
}
}
LEAVE();
}
/**
* @brief Add WPS IE to probe request frame
*
* @param pmpriv A pointer to mlan_private structure
* @param pptlv_out A pointer to TLV to fill in
*
* @return N/A
*/
static void
wlan_add_wps_probe_request_ie(IN mlan_private *pmpriv, OUT t_u8 **pptlv_out)
{
MrvlIEtypesHeader_t *tlv;
ENTER();
if (pmpriv->wps.wps_ie.vend_hdr.len) {
tlv = (MrvlIEtypesHeader_t *)*pptlv_out;
tlv->type = wlan_cpu_to_le16(VENDOR_SPECIFIC_221);
tlv->len = wlan_cpu_to_le16(pmpriv->wps.wps_ie.vend_hdr.len);
*pptlv_out += sizeof(MrvlIEtypesHeader_t);
memcpy(pmpriv->adapter, *pptlv_out,
pmpriv->wps.wps_ie.vend_hdr.oui,
pmpriv->wps.wps_ie.vend_hdr.len);
*pptlv_out += (pmpriv->wps.wps_ie.vend_hdr.len
+ sizeof(MrvlIEtypesHeader_t));
}
LEAVE();
}
/**
* @brief Construct and send multiple scan config commands to the firmware
*
* Previous routines have created a wlan_scan_cmd_config with any requested
* TLVs. This function splits the channel TLV into max_chan_per_scan lists
* and sends the portion of the channel TLV along with the other TLVs
* to the wlan_cmd routines for execution in the firmware.
*
* @param pmpriv A pointer to mlan_private structure
* @param pioctl_buf A pointer to MLAN IOCTL Request buffer
* @param max_chan_per_scan Maximum number channels to be included in each
* scan command sent to firmware
* @param filtered_scan Flag indicating whether or not a BSSID or SSID
* filter is being used for the firmware command
* scan command sent to firmware
* @param pscan_cfg_out Scan configuration used for this scan.
* @param pchan_tlv_out Pointer in the pscan_cfg_out where the channel TLV
* should start. This is past any other TLVs that
* must be sent down in each firmware command.
* @param pscan_chan_list List of channels to scan in max_chan_per_scan segments
*
* @return MLAN_STATUS_SUCCESS or error return otherwise
*/
static mlan_status
wlan_scan_channel_list(IN mlan_private *pmpriv,
IN t_void *pioctl_buf,
IN t_u32 max_chan_per_scan,
IN t_u8 filtered_scan,
OUT wlan_scan_cmd_config *pscan_cfg_out,
OUT MrvlIEtypes_ChanListParamSet_t *pchan_tlv_out,
IN ChanScanParamSet_t *pscan_chan_list)
{
mlan_status ret = MLAN_STATUS_SUCCESS;
mlan_adapter *pmadapter = pmpriv->adapter;
ChanScanParamSet_t *ptmp_chan_list;
ChanScanParamSet_t *pstart_chan;
pmlan_ioctl_req pioctl_req = (mlan_ioctl_req *)pioctl_buf;
t_u8 *pchan_tlv_out_temp = MNULL;
t_u8 *ptlv_temp = MNULL;
t_bool foundJPch14 = MFALSE;
t_u16 tlv_buf_len = 0;
t_u32 tlv_idx;
t_u32 total_scan_time;
t_u32 done_early;
t_u32 cmd_no;
t_u32 first_chan = 1;
mlan_callbacks *pcb = (mlan_callbacks *)&pmadapter->callbacks;
ENTER();
if (!pscan_cfg_out || !pchan_tlv_out || !pscan_chan_list) {
PRINTM(MINFO, "Scan: Null detect: %p, %p, %p\n",
pscan_cfg_out, pchan_tlv_out, pscan_chan_list);
if (pioctl_req)
pioctl_req->status_code = MLAN_ERROR_CMD_SCAN_FAIL;
LEAVE();
return MLAN_STATUS_FAILURE;
}
if (!pscan_chan_list->chan_number) {
PRINTM(MERROR, "Scan: No channel configured\n");
if (pioctl_req)
pioctl_req->status_code = MLAN_ERROR_CMD_SCAN_FAIL;
LEAVE();
return MLAN_STATUS_FAILURE;
}
/* check expiry before preparing scan list - may affect blacklist */
wlan_11h_get_csa_closed_channel(pmpriv);
pchan_tlv_out->header.type = wlan_cpu_to_le16(TLV_TYPE_CHANLIST);
/* Set the temp channel struct pointer to the start of the desired list */
ptmp_chan_list = pscan_chan_list;
/*
* Loop through the desired channel list, sending a new firmware scan
* commands for each max_chan_per_scan channels (or for 1,6,11
* individually if configured accordingly)
*/
while (ptmp_chan_list->chan_number) {
tlv_idx = 0;
total_scan_time = 0;
pchan_tlv_out->header.len = 0;
pstart_chan = ptmp_chan_list;
done_early = MFALSE;
/*
* Construct the Channel TLV for the scan command. Continue to
* insert channel TLVs until:
* - the tlv_idx hits the maximum configured per scan command
* - the next channel to insert is 0 (end of desired
* channel list)
* - done_early is set (controlling individual
* scanning of 1,6,11)
*/
while (tlv_idx < max_chan_per_scan &&
ptmp_chan_list->chan_number && !done_early) {
if (wlan_is_chan_blacklisted
(pmpriv,
radio_type_to_band(ptmp_chan_list->bandcfg.
chanBand),
ptmp_chan_list->chan_number) ||
wlan_is_chan_disabled(pmpriv,
radio_type_to_band
(ptmp_chan_list->bandcfg.
chanBand),
ptmp_chan_list->
chan_number)) {
ptmp_chan_list++;
continue;
}
if (first_chan) {
ptmp_chan_list->chan_scan_mode.first_chan =
MTRUE;
first_chan = 0;
}
PRINTM(MINFO,
"Scan: Chan(%3d), bandcfg(%x), Mode(%d,%d), Dur(%d)\n",
ptmp_chan_list->chan_number,
ptmp_chan_list->bandcfg,
ptmp_chan_list->chan_scan_mode.passive_scan,
ptmp_chan_list->chan_scan_mode.disable_chan_filt,
wlan_le16_to_cpu(ptmp_chan_list->max_scan_time));
if (foundJPch14 == MTRUE) {
foundJPch14 = MFALSE;
/* Restore the TLV buffer */
pchan_tlv_out =
(MrvlIEtypes_ChanListParamSet_t *)
pchan_tlv_out_temp;
pchan_tlv_out->header.type =
wlan_cpu_to_le16(TLV_TYPE_CHANLIST);
pchan_tlv_out->header.len = 0;
if (ptlv_temp) {
memcpy(pmadapter,
pscan_cfg_out->tlv_buf,
ptlv_temp, tlv_buf_len);
pcb->moal_mfree(pmadapter->pmoal_handle,
ptlv_temp);
ptlv_temp = MNULL;
}
}
/* Special Case: For Japan, Scan on CH14 for 11G rates is not allowed
Hence Rates TLV needs to be updated to support only 11B rates */
if ((pmadapter->region_code == COUNTRY_CODE_JP_40 ||
pmadapter->region_code == COUNTRY_CODE_JP_FF)
&& (ptmp_chan_list->chan_number == 14)
&& (pmadapter->ext_scan_type != EXT_SCAN_ENHANCE)
) {
t_u8 *ptlv_pos = pscan_cfg_out->tlv_buf;
t_u16 old_ratetlv_len, new_ratetlv_len;
MrvlIEtypesHeader_t *header;
MrvlIEtypes_RatesParamSet_t *prates_tlv;
/* Preserve the current TLV buffer */
ret = pcb->moal_malloc(pmadapter->pmoal_handle,
MAX_SCAN_CFG_ALLOC -
CHAN_TLV_MAX_SIZE,
MLAN_MEM_DEF,
(t_u8 **)&ptlv_temp);
if (ret != MLAN_STATUS_SUCCESS || !ptlv_temp) {
PRINTM(MERROR,
"Memory allocation for pscan_cfg_out failed!\n");
if (pioctl_req)
pioctl_req->status_code =
MLAN_ERROR_NO_MEM;
LEAVE();
return MLAN_STATUS_FAILURE;
}
pchan_tlv_out_temp = (t_u8 *)pchan_tlv_out;
tlv_buf_len =
(t_u32)(pchan_tlv_out_temp -
pscan_cfg_out->tlv_buf);
memcpy(pmadapter, ptlv_temp, ptlv_pos,
tlv_buf_len);
/* Search for Rates TLV */
while ((!foundJPch14) &&
(ptlv_pos < pchan_tlv_out_temp)) {
header = (MrvlIEtypesHeader_t *)
ptlv_pos;
if (header->type ==
wlan_cpu_to_le16(TLV_TYPE_RATES))
foundJPch14 = MTRUE;
else
ptlv_pos +=
(sizeof
(MrvlIEtypesHeader_t) +
wlan_le16_to_cpu
(header->len));
}
if (foundJPch14) {
/* Update the TLV buffer with *new* Rates TLV and rearrange remaining TLV buffer */
prates_tlv =
(MrvlIEtypes_RatesParamSet_t *)
ptlv_pos;
old_ratetlv_len =
sizeof(MrvlIEtypesHeader_t) +
wlan_le16_to_cpu(prates_tlv->
header.len);
prates_tlv->header.len =
wlan_copy_rates(prates_tlv->
rates, 0,
SupportedRates_B,
sizeof
(SupportedRates_B));
new_ratetlv_len =
sizeof(MrvlIEtypesHeader_t) +
prates_tlv->header.len;
prates_tlv->header.len =
wlan_cpu_to_le16(prates_tlv->
header.len);
memmove(pmadapter,
ptlv_pos + new_ratetlv_len,
ptlv_pos + old_ratetlv_len,
(t_u32)(pchan_tlv_out_temp -
(ptlv_pos +
old_ratetlv_len)));
pchan_tlv_out =
(MrvlIEtypes_ChanListParamSet_t
*)
(pchan_tlv_out_temp -
(old_ratetlv_len -
new_ratetlv_len));
pchan_tlv_out->header.type =
wlan_cpu_to_le16
(TLV_TYPE_CHANLIST);
pchan_tlv_out->header.len = 0;
}
}
/* Copy the current channel TLV to the command being prepared */
memcpy(pmadapter,
pchan_tlv_out->chan_scan_param + tlv_idx,
ptmp_chan_list,
sizeof(pchan_tlv_out->chan_scan_param));
/* Increment the TLV header length by the size appended */
pchan_tlv_out->header.len +=
sizeof(pchan_tlv_out->chan_scan_param);
/*
* The tlv buffer length is set to the number of
* bytes of the between the channel tlv pointer
* and the start of the tlv buffer. This
* compensates for any TLVs that were appended
* before the channel list.
*/
pscan_cfg_out->tlv_buf_len =
(t_u32)((t_u8 *)pchan_tlv_out -
pscan_cfg_out->tlv_buf);
/* Add the size of the channel tlv header and the data length */
pscan_cfg_out->tlv_buf_len +=
(sizeof(pchan_tlv_out->header)
+ pchan_tlv_out->header.len);
/* Increment the index to the channel tlv we are constructing */
tlv_idx++;
/* Count the total scan time per command */
total_scan_time +=
wlan_le16_to_cpu(ptmp_chan_list->max_scan_time);
done_early = MFALSE;
/*
* Stop the loop if the *current* channel is in the 1,6,11 set
* and we are not filtering on a BSSID or SSID.
*/
if (!filtered_scan &&
(ptmp_chan_list->chan_number == 1 ||
ptmp_chan_list->chan_number == 6 ||
ptmp_chan_list->chan_number == 11)) {
done_early = MTRUE;
}
/*
* Stop the loop if the *current* channel is 14
* and region code is Japan (0x40 or 0xFF)
*/
if ((pmadapter->region_code == COUNTRY_CODE_JP_40 ||
pmadapter->region_code == COUNTRY_CODE_JP_FF)
&& (ptmp_chan_list->chan_number == 14)) {
done_early = MTRUE;
}
/* Increment the tmp pointer to the next channel to be scanned */
ptmp_chan_list++;
/*
* Stop the loop if the *next* channel is in the 1,6,11 set.
* This will cause it to be the only channel scanned on the next
* interation
*/
if (!filtered_scan &&
(ptmp_chan_list->chan_number == 1 ||
ptmp_chan_list->chan_number == 6 ||
ptmp_chan_list->chan_number == 11)) {
done_early = MTRUE;
}
/*
* Stop the loop if the *next* channel is 14
* and region code is Japan (0x40 or 0xFF)
*/
if ((pmadapter->region_code == COUNTRY_CODE_JP_40 ||
pmadapter->region_code == COUNTRY_CODE_JP_FF)
&& (ptmp_chan_list->chan_number == 14)) {
done_early = MTRUE;
}
if (pmadapter->ext_scan && pmadapter->ext_scan_enh &&
pmadapter->ext_scan_type == EXT_SCAN_ENHANCE)
done_early = MFALSE;
}
/* The total scan time should be less than scan command timeout value */
if (total_scan_time > MRVDRV_MAX_TOTAL_SCAN_TIME) {
PRINTM(MMSG,
"Total scan time %d ms is over limit (%d ms), scan skipped\n",
total_scan_time, MRVDRV_MAX_TOTAL_SCAN_TIME);
if (pioctl_req)
pioctl_req->status_code =
MLAN_ERROR_CMD_SCAN_FAIL;
ret = MLAN_STATUS_FAILURE;
break;
}
pchan_tlv_out->header.len =
wlan_cpu_to_le16(pchan_tlv_out->header.len);
pmadapter->pscan_channels = pstart_chan;
/* Send the scan command to the firmware with the specified cfg */
if (pmadapter->ext_scan)
cmd_no = HostCmd_CMD_802_11_SCAN_EXT;
else
cmd_no = HostCmd_CMD_802_11_SCAN;
ret = wlan_prepare_cmd(pmpriv,
cmd_no,
HostCmd_ACT_GEN_SET,
0, MNULL, pscan_cfg_out);
if (ret)
break;
}
LEAVE();
if (ptlv_temp)
pcb->moal_mfree(pmadapter->pmoal_handle, ptlv_temp);
if (ret)
return MLAN_STATUS_FAILURE;
return MLAN_STATUS_SUCCESS;
}
/**
* @brief Construct a wlan_scan_cmd_config structure to use in scan commands
*
* Application layer or other functions can invoke wlan_scan_networks
* with a scan configuration supplied in a wlan_ioctl_user_scan_cfg struct.
* This structure is used as the basis of one or many wlan_scan_cmd_config
* commands that are sent to the command processing module and sent to
* firmware.
*
* Create a wlan_scan_cmd_config based on the following user supplied
* parameters (if present):
* - SSID filter
* - BSSID filter
* - Number of Probes to be sent
* - Channel list
*
* If the SSID or BSSID filter is not present, disable/clear the filter.
* If the number of probes is not set, use the adapter default setting
* Qualify the channel
*
* @param pmpriv A pointer to mlan_private structure
* @param puser_scan_in MNULL or pointer to scan config parameters
* @param pscan_cfg_out Output parameter: Resulting scan configuration
* @param ppchan_list_out Output parameter: Pointer to the start of the
* channel TLV portion of the output scan config
* @param pscan_chan_list Output parameter: Pointer to the resulting
* channel list to scan
* @param pmax_chan_per_scan Output parameter: Number of channels to scan for
* each issuance of the firmware scan command
* @param pfiltered_scan Output parameter: Flag indicating whether or not
* a BSSID or SSID filter is being sent in the
* command to firmware. Used to increase the number
* of channels sent in a scan command and to
* disable the firmware channel scan filter.
* @param pscan_current_only Output parameter: Flag indicating whether or not
* we are only scanning our current active channel
*
* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
*/
static mlan_status
wlan_scan_setup_scan_config(IN mlan_private *pmpriv,
IN wlan_user_scan_cfg *puser_scan_in,
OUT wlan_scan_cmd_config *pscan_cfg_out,
OUT MrvlIEtypes_ChanListParamSet_t
**ppchan_list_out,
OUT ChanScanParamSet_t *pscan_chan_list,
OUT t_u8 *pmax_chan_per_scan,
OUT t_u8 *pfiltered_scan,
OUT t_u8 *pscan_current_only)
{
mlan_adapter *pmadapter = pmpriv->adapter;
mlan_status ret = MLAN_STATUS_SUCCESS;
MrvlIEtypes_NumProbes_t *pnum_probes_tlv;
MrvlIEtypes_WildCardSsIdParamSet_t *pwildcard_ssid_tlv;
MrvlIEtypes_RatesParamSet_t *prates_tlv;
MrvlIEtypes_Bssid_List_t *pbssid_tlv;
const t_u8 zero_mac[MLAN_MAC_ADDR_LENGTH] = { 0, 0, 0, 0, 0, 0 };
t_u8 *ptlv_pos;
t_u32 num_probes;
t_u32 ssid_len;
t_u32 chan_idx;
t_u32 scan_type;
t_u16 scan_dur;
t_u8 channel;
t_u8 radio_type;
t_u32 ssid_idx;
t_u8 ssid_filter;
WLAN_802_11_RATES rates;
t_u32 rates_size;
MrvlIETypes_HTCap_t *pht_cap;
MrvlIEtypes_ScanChanGap_t *pscan_gap_tlv;
MrvlIEtypes_BssMode_t *pbss_mode;
ENTER();
/* The tlv_buf_len is calculated for each scan command. The TLVs added
* in this routine will be preserved since the routine that sends
* the command will append channelTLVs at *ppchan_list_out. The
* difference between the *ppchan_list_out and the tlv_buf start will be
* used to calculate the size of anything we add in this routine.
*/
pscan_cfg_out->tlv_buf_len = 0;
/* Running tlv pointer. Assigned to ppchan_list_out at end of function
* so later routines know where channels can be added to the command buf
*/
ptlv_pos = pscan_cfg_out->tlv_buf;
/* Initialize the scan as un-filtered; the flag is later set to
* TRUE below if a SSID or BSSID filter is sent in the command
*/
*pfiltered_scan = MFALSE;
/* Initialize the scan as not being only on the current channel. If
* the channel list is customized, only contains one channel, and
* is the active channel, this is set true and data flow is not halted.
*/
*pscan_current_only = MFALSE;
if (puser_scan_in) {
ssid_filter = MFALSE;
/* Set the bss type scan filter, use Adapter setting if unset */
pscan_cfg_out->bss_mode = (puser_scan_in->bss_mode
? (t_u8)puser_scan_in->bss_mode :
(t_u8)pmadapter->scan_mode);
/* Set the number of probes to send, use Adapter setting if unset */
num_probes =
(puser_scan_in->num_probes ? puser_scan_in->
num_probes : pmadapter->scan_probes);
/*
* Set the BSSID filter to the incoming configuration,
* if non-zero. If not set, it will remain disabled
* (all zeros).
*/
memcpy(pmadapter, pscan_cfg_out->specific_bssid,
puser_scan_in->specific_bssid,
sizeof(pscan_cfg_out->specific_bssid));
if (pmadapter->ext_scan
&& memcmp(pmadapter, pscan_cfg_out->specific_bssid,
&zero_mac, sizeof(zero_mac))) {
pbssid_tlv = (MrvlIEtypes_Bssid_List_t *)ptlv_pos;
pbssid_tlv->header.type = TLV_TYPE_BSSID;
pbssid_tlv->header.len = MLAN_MAC_ADDR_LENGTH;
memcpy(pmadapter, pbssid_tlv->bssid,
puser_scan_in->specific_bssid,
MLAN_MAC_ADDR_LENGTH);
ptlv_pos += sizeof(MrvlIEtypes_Bssid_List_t);
}
for (ssid_idx = 0;
((ssid_idx < NELEMENTS(puser_scan_in->ssid_list))
&& (*puser_scan_in->ssid_list[ssid_idx].ssid ||
puser_scan_in->ssid_list[ssid_idx].max_len));
ssid_idx++) {
ssid_len =
wlan_strlen((char *)puser_scan_in->
ssid_list[ssid_idx].ssid);
pwildcard_ssid_tlv
=
(MrvlIEtypes_WildCardSsIdParamSet_t *)ptlv_pos;
pwildcard_ssid_tlv->header.type =
wlan_cpu_to_le16(TLV_TYPE_WILDCARDSSID);
pwildcard_ssid_tlv->header.len =
(t_u16)(ssid_len +
sizeof(pwildcard_ssid_tlv->
max_ssid_length));
pwildcard_ssid_tlv->max_ssid_length =
puser_scan_in->ssid_list[ssid_idx].max_len;
memcpy(pmadapter, pwildcard_ssid_tlv->ssid,
puser_scan_in->ssid_list[ssid_idx].ssid,
MIN(MLAN_MAX_SSID_LENGTH, ssid_len));
ptlv_pos += (sizeof(pwildcard_ssid_tlv->header)
+ pwildcard_ssid_tlv->header.len);
pwildcard_ssid_tlv->header.len
=
wlan_cpu_to_le16(pwildcard_ssid_tlv->header.
len);
PRINTM(MINFO, "Scan: ssid_list[%d]: %s, %d\n",
ssid_idx,
pwildcard_ssid_tlv->ssid,
pwildcard_ssid_tlv->max_ssid_length);
if (ssid_len) {
ssid_filter = MTRUE;
if (!puser_scan_in->ssid_list[ssid_idx].max_len) {
PRINTM(MCMND, "user scan: %s\n",
pwildcard_ssid_tlv->ssid);
puser_scan_in->ssid_filter = MTRUE;
}
}
}
/*
* The default number of channels sent in the command is low to
* ensure the response buffer from the firmware does not
* truncate scan results. That is not an issue with an SSID or
* BSSID filter applied to the scan results in the firmware.
*/
if ((ssid_idx && ssid_filter) ||
memcmp(pmadapter, pscan_cfg_out->specific_bssid, &zero_mac,
sizeof(zero_mac))) {
*pfiltered_scan = MTRUE;
}
} else {
pscan_cfg_out->bss_mode = (t_u8)pmadapter->scan_mode;
num_probes = pmadapter->scan_probes;
}
/*
* If a specific BSSID or SSID is used, the number of channels in
* the scan command will be increased to the absolute maximum.
*/
if (*pfiltered_scan)
*pmax_chan_per_scan = MRVDRV_MAX_CHANNELS_PER_SPECIFIC_SCAN;
else
*pmax_chan_per_scan = MRVDRV_CHANNELS_PER_SCAN_CMD;
if (puser_scan_in && puser_scan_in->scan_chan_gap) {
*pmax_chan_per_scan = MRVDRV_MAX_CHANNELS_PER_SPECIFIC_SCAN;
PRINTM(MINFO, "Scan: channel gap = %d\n",
puser_scan_in->scan_chan_gap);
pscan_gap_tlv = (MrvlIEtypes_ScanChanGap_t *)ptlv_pos;
pscan_gap_tlv->header.type =
wlan_cpu_to_le16(TLV_TYPE_SCAN_CHANNEL_GAP);
pscan_gap_tlv->header.len = sizeof(pscan_gap_tlv->gap);
pscan_gap_tlv->gap =
wlan_cpu_to_le16((t_u16)puser_scan_in->scan_chan_gap);
ptlv_pos +=
sizeof(pscan_gap_tlv->header) +
pscan_gap_tlv->header.len;
pscan_gap_tlv->header.len =
wlan_cpu_to_le16(pscan_gap_tlv->header.len);
}
if (pmadapter->ext_scan) {
pbss_mode = (MrvlIEtypes_BssMode_t *) ptlv_pos;
pbss_mode->header.type = wlan_cpu_to_le16(TLV_TYPE_BSS_MODE);
pbss_mode->header.len = sizeof(pbss_mode->bss_mode);
pbss_mode->bss_mode = pscan_cfg_out->bss_mode;
ptlv_pos += sizeof(pbss_mode->header) + pbss_mode->header.len;
pbss_mode->header.len = wlan_cpu_to_le16(pbss_mode->header.len);
if (pmadapter->ext_scan_enh) {
if (puser_scan_in) {
if (puser_scan_in->ext_scan_type ==
EXT_SCAN_ENHANCE)
pmadapter->ext_scan_type =
EXT_SCAN_ENHANCE;
else
pmadapter->ext_scan_type =
EXT_SCAN_DEFAULT;
} else if (pmadapter->ext_scan == EXT_SCAN_TYPE_ENH)
pmadapter->ext_scan_type = EXT_SCAN_ENHANCE;
else
pmadapter->ext_scan_type = EXT_SCAN_DEFAULT;
if (pmadapter->ext_scan_type == EXT_SCAN_ENHANCE)
*pmax_chan_per_scan =
MRVDRV_MAX_CHANNELS_PER_SCAN;
}
}
/* If the input config or adapter has the number of Probes set, add tlv */
if (num_probes) {
PRINTM(MINFO, "Scan: num_probes = %d\n", num_probes);
pnum_probes_tlv = (MrvlIEtypes_NumProbes_t *)ptlv_pos;
pnum_probes_tlv->header.type =
wlan_cpu_to_le16(TLV_TYPE_NUMPROBES);
pnum_probes_tlv->header.len =
sizeof(pnum_probes_tlv->num_probes);
pnum_probes_tlv->num_probes =
wlan_cpu_to_le16((t_u16)num_probes);
ptlv_pos +=
sizeof(pnum_probes_tlv->header) +
pnum_probes_tlv->header.len;
pnum_probes_tlv->header.len =
wlan_cpu_to_le16(pnum_probes_tlv->header.len);
}
/* Append rates tlv */
memset(pmadapter, rates, 0, sizeof(rates));
rates_size = wlan_get_supported_rates(pmpriv, pmpriv->bss_mode,
(pmpriv->bss_mode ==
MLAN_BSS_MODE_INFRA) ? pmpriv->
config_bands : pmadapter->
adhoc_start_band, rates);
prates_tlv = (MrvlIEtypes_RatesParamSet_t *)ptlv_pos;
prates_tlv->header.type = wlan_cpu_to_le16(TLV_TYPE_RATES);
prates_tlv->header.len = wlan_cpu_to_le16((t_u16)rates_size);
memcpy(pmadapter, prates_tlv->rates, rates, rates_size);
ptlv_pos += sizeof(prates_tlv->header) + rates_size;
PRINTM(MINFO, "SCAN_CMD: Rates size = %d\n", rates_size);
if (ISSUPP_11NENABLED(pmpriv->adapter->fw_cap_info)
&& (pmpriv->config_bands & BAND_GN
|| pmpriv->config_bands & BAND_AN)) {
pht_cap = (MrvlIETypes_HTCap_t *)ptlv_pos;
memset(pmadapter, pht_cap, 0, sizeof(MrvlIETypes_HTCap_t));
pht_cap->header.type = wlan_cpu_to_le16(HT_CAPABILITY);
pht_cap->header.len = sizeof(HTCap_t);
wlan_fill_ht_cap_tlv(pmpriv, pht_cap, pmpriv->config_bands,
MTRUE);
HEXDUMP("SCAN: HT_CAPABILITIES IE", (t_u8 *)pht_cap,
sizeof(MrvlIETypes_HTCap_t));
ptlv_pos += sizeof(MrvlIETypes_HTCap_t);
pht_cap->header.len = wlan_cpu_to_le16(pht_cap->header.len);
}
if (wlan_is_ext_capa_support(pmpriv))
wlan_add_ext_capa_info_ie(pmpriv, &ptlv_pos);
if (pmpriv->adapter->ecsa_enable) {
t_u8 bandwidth = BW_20MHZ;
t_u8 oper_class = 1;
t_u32 usr_dot_11n_dev_cap;
if (pmpriv->media_connected) {
if (pmpriv->config_bands & BAND_A)
usr_dot_11n_dev_cap =
pmpriv->usr_dot_11n_dev_cap_a;
else
usr_dot_11n_dev_cap =
pmpriv->usr_dot_11n_dev_cap_bg;
if (usr_dot_11n_dev_cap & MBIT(17)) {
bandwidth = BW_40MHZ;
}
wlan_get_curr_oper_class(pmpriv,
pmpriv->curr_bss_params.
bss_descriptor.channel,
bandwidth, &oper_class);
}
wlan_add_supported_oper_class_ie(pmpriv, &ptlv_pos, oper_class);
}
wlan_add_wps_probe_request_ie(pmpriv, &ptlv_pos);
if (puser_scan_in && puser_scan_in->proberesp_only) {
MrvlIEtypes_OnlyProberesp_t *proberesp_only =
(MrvlIEtypes_OnlyProberesp_t *) ptlv_pos;
memset(pmadapter, proberesp_only, 0,
sizeof(MrvlIEtypes_OnlyProberesp_t));
proberesp_only->header.type =
wlan_cpu_to_le16(TLV_TYPE_ONLYPROBERESP);
proberesp_only->header.len = wlan_cpu_to_le16(sizeof(t_u8));
proberesp_only->proberesp_only = puser_scan_in->proberesp_only;
ptlv_pos += sizeof(MrvlIEtypes_OnlyProberesp_t);
}
/*
* Set the output for the channel TLV to the address in the tlv buffer
* past any TLVs that were added in this function (SSID, num_probes).
* Channel TLVs will be added past this for each scan command,
* preserving the TLVs that were previously added.
*/
*ppchan_list_out = (MrvlIEtypes_ChanListParamSet_t *)ptlv_pos;
if (puser_scan_in && puser_scan_in->chan_list[0].chan_number) {
PRINTM(MINFO, "Scan: Using supplied channel list\n");
for (chan_idx = 0;
chan_idx < WLAN_USER_SCAN_CHAN_MAX
&& puser_scan_in->chan_list[chan_idx].chan_number;
chan_idx++) {
channel =
puser_scan_in->chan_list[chan_idx].chan_number;
(pscan_chan_list + chan_idx)->chan_number = channel;
radio_type =
puser_scan_in->chan_list[chan_idx].radio_type;
(pscan_chan_list + chan_idx)->bandcfg.chanBand =
radio_type;
scan_type =
puser_scan_in->chan_list[chan_idx].scan_type;
if (scan_type == MLAN_SCAN_TYPE_UNCHANGED)
scan_type = pmadapter->scan_type;
if (radio_type == BAND_5GHZ) {
if (pmadapter->fw_bands & BAND_A)
PRINTM(MINFO,
"UserScan request for A Band channel %d!!\n",
channel);
else {
PRINTM(MERROR,
"Scan in A band is not allowed!!\n");
ret = MLAN_STATUS_FAILURE;
LEAVE();
return ret;
}
}
/* Prevent active scanning on a radar controlled channel */
if (radio_type == BAND_5GHZ) {
if (pmadapter->active_scan_triggered == MFALSE)
if (wlan_11h_radar_detect_required
(pmpriv, channel)) {
scan_type =
MLAN_SCAN_TYPE_PASSIVE;
}
}
if (radio_type == BAND_2GHZ) {
if (pmadapter->active_scan_triggered == MFALSE)
if (wlan_bg_scan_type_is_passive
(pmpriv, channel)) {
scan_type =
MLAN_SCAN_TYPE_PASSIVE;
}
}
if (scan_type == MLAN_SCAN_TYPE_PASSIVE) {
(pscan_chan_list +
chan_idx)->chan_scan_mode.passive_scan = MTRUE;
(pscan_chan_list +
chan_idx)->chan_scan_mode.hidden_ssid_report =
MTRUE;
} else {
(pscan_chan_list +
chan_idx)->chan_scan_mode.passive_scan =
MFALSE;
}
if (puser_scan_in->chan_list[chan_idx].scan_time) {
scan_dur =
(t_u16)puser_scan_in->
chan_list[chan_idx].scan_time;
} else {
if (scan_type == MLAN_SCAN_TYPE_PASSIVE) {
scan_dur = pmadapter->passive_scan_time;
} else if (*pfiltered_scan) {
scan_dur =
pmadapter->specific_scan_time;
} else {
scan_dur = pmadapter->active_scan_time;
}
}
if (pmadapter->coex_scan &&
pmadapter->coex_min_scan_time &&
(pmadapter->coex_min_scan_time > scan_dur))
scan_dur = pmadapter->coex_min_scan_time;
(pscan_chan_list + chan_idx)->min_scan_time =
wlan_cpu_to_le16(scan_dur);
(pscan_chan_list + chan_idx)->max_scan_time =
wlan_cpu_to_le16(scan_dur);
if (*pfiltered_scan) {
(pscan_chan_list +
chan_idx)->chan_scan_mode.disable_chan_filt =
MTRUE;
}
}
/* Check if we are only scanning the current channel */
if ((chan_idx == 1)
&& (puser_scan_in->chan_list[0].chan_number
== pmpriv->curr_bss_params.bss_descriptor.channel)) {
*pscan_current_only = MTRUE;
PRINTM(MINFO, "Scan: Scanning current channel only\n");
}
} else {
PRINTM(MINFO, "Scan: Creating full region channel list\n");
wlan_scan_create_channel_list(pmpriv, puser_scan_in,
pscan_chan_list, *pfiltered_scan);
}
LEAVE();
return ret;
}
/**
* @brief Inspect the scan response buffer for pointers to expected TLVs
*
* TLVs can be included at the end of the scan response BSS information.
* Parse the data in the buffer for pointers to TLVs that can potentially
* be passed back in the response
*
* @param pmadapter Pointer to the mlan_adapter structure
* @param ptlv Pointer to the start of the TLV buffer to parse
* @param tlv_buf_size Size of the TLV buffer
* @param req_tlv_type Request TLV's type
* @param pptlv Output parameter: Pointer to the request TLV if found
*
* @return N/A
*/
static t_void
wlan_ret_802_11_scan_get_tlv_ptrs(IN pmlan_adapter pmadapter,
IN MrvlIEtypes_Data_t *ptlv,
IN t_u32 tlv_buf_size,
IN t_u32 req_tlv_type,
OUT MrvlIEtypes_Data_t **pptlv)
{
MrvlIEtypes_Data_t *pcurrent_tlv;
t_u32 tlv_buf_left;
t_u32 tlv_type;
t_u32 tlv_len;
ENTER();
pcurrent_tlv = ptlv;
tlv_buf_left = tlv_buf_size;
*pptlv = MNULL;
PRINTM(MINFO, "SCAN_RESP: tlv_buf_size = %d\n", tlv_buf_size);
while (tlv_buf_left >= sizeof(MrvlIEtypesHeader_t)) {
tlv_type = wlan_le16_to_cpu(pcurrent_tlv->header.type);
tlv_len = wlan_le16_to_cpu(pcurrent_tlv->header.len);
if (sizeof(ptlv->header) + tlv_len > tlv_buf_left) {
PRINTM(MERROR, "SCAN_RESP: TLV buffer corrupt\n");
break;
}
if (req_tlv_type == tlv_type) {
switch (tlv_type) {
case TLV_TYPE_TSFTIMESTAMP:
PRINTM(MINFO,
"SCAN_RESP: TSF Timestamp TLV, len = %d\n",
tlv_len);
*pptlv = (MrvlIEtypes_Data_t *)pcurrent_tlv;
break;
case TLV_TYPE_CHANNELBANDLIST:
PRINTM(MINFO,
"SCAN_RESP: CHANNEL BAND LIST TLV, len = %d\n",
tlv_len);
*pptlv = (MrvlIEtypes_Data_t *)pcurrent_tlv;
break;
case TLV_TYPE_CHANNEL_STATS:
PRINTM(MINFO,
"SCAN_RESP: CHANNEL STATS TLV, len = %d\n",
tlv_len);
*pptlv = (MrvlIEtypes_Data_t *)pcurrent_tlv;
break;
default:
PRINTM(MERROR,
"SCAN_RESP: Unhandled TLV = %d\n",
tlv_type);
/* Give up, this seems corrupted */
LEAVE();
return;
}
}
if (*pptlv) {
/* HEXDUMP("SCAN_RESP: TLV Buf", (t_u8 *)*pptlv+4, tlv_len); */
break;
}
tlv_buf_left -= (sizeof(ptlv->header) + tlv_len);
pcurrent_tlv =
(MrvlIEtypes_Data_t *)(pcurrent_tlv->data + tlv_len);
} /* while */
LEAVE();
}
/**
* @brief Interpret a BSS scan response returned from the firmware
*
* Parse the various fixed fields and IEs passed back for a BSS probe
* response or beacon from the scan command. Record information as needed
* in the scan table BSSDescriptor_t for that entry.
*
* @param pmadapter A pointer to mlan_adapter structure
* @param pbss_entry Output parameter: Pointer to the BSS Entry
* @param pbeacon_info Pointer to the Beacon information
* @param bytes_left Number of bytes left to parse
* @param ext_scan extended scan
*
* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
*/
static mlan_status
wlan_interpret_bss_desc_with_ie(IN pmlan_adapter pmadapter,
OUT BSSDescriptor_t *pbss_entry,
IN t_u8 **pbeacon_info,
IN t_u32 *bytes_left, IN t_u8 ext_scan)
{
mlan_status ret = MLAN_STATUS_SUCCESS;
IEEEtypes_ElementId_e element_id;
IEEEtypes_FhParamSet_t *pfh_param_set;
IEEEtypes_DsParamSet_t *pds_param_set;
IEEEtypes_CfParamSet_t *pcf_param_set;
IEEEtypes_IbssParamSet_t *pibss_param_set;
IEEEtypes_CapInfo_t *pcap_info;
WLAN_802_11_FIXED_IEs fixed_ie;
t_u8 *pcurrent_ptr;
t_u8 *prate;
t_u8 element_len;
t_u16 total_ie_len;
t_u8 bytes_to_copy;
t_u8 rate_size;
t_u16 beacon_size;
t_u8 found_data_rate_ie;
t_u32 bytes_left_for_current_beacon;
IEEEtypes_ERPInfo_t *perp_info;
IEEEtypes_VendorSpecific_t *pvendor_ie;
const t_u8 wpa_oui[4] = { 0x00, 0x50, 0xf2, 0x01 };
const t_u8 wmm_oui[4] = { 0x00, 0x50, 0xf2, 0x02 };
IEEEtypes_CountryInfoSet_t *pcountry_info;
ENTER();
found_data_rate_ie = MFALSE;
rate_size = 0;
beacon_size = 0;
if (*bytes_left >= sizeof(beacon_size)) {
/* Extract & convert beacon size from the command buffer */
memcpy(pmadapter, &beacon_size, *pbeacon_info,
sizeof(beacon_size));
beacon_size = wlan_le16_to_cpu(beacon_size);
*bytes_left -= sizeof(beacon_size);
*pbeacon_info += sizeof(beacon_size);
}
if (!beacon_size || beacon_size > *bytes_left) {
*pbeacon_info += *bytes_left;
*bytes_left = 0;
LEAVE();
return MLAN_STATUS_FAILURE;
}
/* Initialize the current working beacon pointer for this BSS iteration */
pcurrent_ptr = *pbeacon_info;
/* Advance the return beacon pointer past the current beacon */
*pbeacon_info += beacon_size;
*bytes_left -= beacon_size;
bytes_left_for_current_beacon = beacon_size;
if (bytes_left_for_current_beacon <
(MLAN_MAC_ADDR_LENGTH + sizeof(t_u8) +
sizeof(WLAN_802_11_FIXED_IEs))) {
PRINTM(MERROR, "InterpretIE: Not enough bytes left\n");
LEAVE();
return MLAN_STATUS_FAILURE;
}
memcpy(pmadapter, pbss_entry->mac_address, pcurrent_ptr,
MLAN_MAC_ADDR_LENGTH);
PRINTM(MINFO, "InterpretIE: AP MAC Addr-" MACSTR "\n",
MAC2STR(pbss_entry->mac_address));
pcurrent_ptr += MLAN_MAC_ADDR_LENGTH;
bytes_left_for_current_beacon -= MLAN_MAC_ADDR_LENGTH;
/*
* Next 4 fields are RSSI (for legacy scan only), time stamp,
* beacon interval, and capability information
*/
if (!ext_scan) {
/* RSSI is 1 byte long */
pbss_entry->rssi = (t_s32)(*pcurrent_ptr);
PRINTM(MINFO, "InterpretIE: RSSI=%02X\n", *pcurrent_ptr);
pcurrent_ptr += 1;
bytes_left_for_current_beacon -= 1;
}
/*
* The RSSI is not part of the beacon/probe response. After we have
* advanced pcurrent_ptr past the RSSI field, save the remaining
* data for use at the application layer
*/
pbss_entry->pbeacon_buf = pcurrent_ptr;
pbss_entry->beacon_buf_size = bytes_left_for_current_beacon;
/* Time stamp is 8 bytes long */
memcpy(pmadapter, fixed_ie.time_stamp, pcurrent_ptr, 8);
memcpy(pmadapter, pbss_entry->time_stamp, pcurrent_ptr, 8);
pcurrent_ptr += 8;
bytes_left_for_current_beacon -= 8;
/* Beacon interval is 2 bytes long */
memcpy(pmadapter, &fixed_ie.beacon_interval, pcurrent_ptr, 2);
pbss_entry->beacon_period = wlan_le16_to_cpu(fixed_ie.beacon_interval);
pcurrent_ptr += 2;
bytes_left_for_current_beacon -= 2;
/* Capability information is 2 bytes long */
memcpy(pmadapter, &fixed_ie.capabilities, pcurrent_ptr, 2);
PRINTM(MINFO, "InterpretIE: fixed_ie.capabilities=0x%X\n",
fixed_ie.capabilities);
fixed_ie.capabilities = wlan_le16_to_cpu(fixed_ie.capabilities);
pcap_info = (IEEEtypes_CapInfo_t *)&fixed_ie.capabilities;
memcpy(pmadapter, &pbss_entry->cap_info, pcap_info,
sizeof(IEEEtypes_CapInfo_t));
pcurrent_ptr += 2;
bytes_left_for_current_beacon -= 2;
/* Rest of the current buffer are IE's */
PRINTM(MINFO, "InterpretIE: IELength for this AP = %d\n",
bytes_left_for_current_beacon);
HEXDUMP("InterpretIE: IE info", (t_u8 *)pcurrent_ptr,
bytes_left_for_current_beacon);
if (pcap_info->privacy) {
PRINTM(MINFO, "InterpretIE: AP WEP enabled\n");
pbss_entry->privacy = Wlan802_11PrivFilter8021xWEP;
} else {
pbss_entry->privacy = Wlan802_11PrivFilterAcceptAll;
}
if (pcap_info->ibss == 1)
pbss_entry->bss_mode = MLAN_BSS_MODE_IBSS;
else
pbss_entry->bss_mode = MLAN_BSS_MODE_INFRA;
if (pcap_info->spectrum_mgmt == 1) {
PRINTM(MINFO, "InterpretIE: 11h- Spectrum Management "
"capability bit found\n");
pbss_entry->wlan_11h_bss_info.sensed_11h = 1;
}
/* Process variable IE */
while (bytes_left_for_current_beacon >= 2) {
element_id = (IEEEtypes_ElementId_e)(*((t_u8 *)pcurrent_ptr));
element_len = *((t_u8 *)pcurrent_ptr + 1);
total_ie_len = element_len + sizeof(IEEEtypes_Header_t);
if (bytes_left_for_current_beacon < total_ie_len) {
PRINTM(MERROR, "InterpretIE: Error in processing IE, "
"bytes left < IE length\n");
bytes_left_for_current_beacon = 0;
continue;
}
switch (element_id) {
case SSID:
if (element_len > MRVDRV_MAX_SSID_LENGTH) {
bytes_left_for_current_beacon = 0;
continue;
}
if (!pbss_entry->ssid.ssid_len) {
pbss_entry->ssid.ssid_len = element_len;
memcpy(pmadapter, pbss_entry->ssid.ssid,
(pcurrent_ptr + 2), element_len);
}
PRINTM(MINFO, "InterpretIE: ssid: %-32s\n",
pbss_entry->ssid.ssid);
break;
case SUPPORTED_RATES:
if (element_len > WLAN_SUPPORTED_RATES) {
bytes_left_for_current_beacon = 0;
continue;
}
memcpy(pmadapter, pbss_entry->data_rates,
pcurrent_ptr + 2, element_len);
memcpy(pmadapter, pbss_entry->supported_rates,
pcurrent_ptr + 2, element_len);
HEXDUMP("InterpretIE: SupportedRates:",
pbss_entry->supported_rates, element_len);
rate_size = element_len;
found_data_rate_ie = MTRUE;
break;
case FH_PARAM_SET:
pfh_param_set = (IEEEtypes_FhParamSet_t *)pcurrent_ptr;
pbss_entry->network_type_use = Wlan802_11FH;
memcpy(pmadapter,
&pbss_entry->phy_param_set.fh_param_set,
pfh_param_set, MIN(total_ie_len,
sizeof
(IEEEtypes_FhParamSet_t)));
pbss_entry->phy_param_set.fh_param_set.len =
MIN(element_len, (sizeof(IEEEtypes_FhParamSet_t)
-
sizeof(IEEEtypes_Header_t)));
pbss_entry->phy_param_set.fh_param_set.dwell_time =
wlan_le16_to_cpu(pbss_entry->phy_param_set.
fh_param_set.dwell_time);
break;
case DS_PARAM_SET:
pds_param_set = (IEEEtypes_DsParamSet_t *)pcurrent_ptr;
pbss_entry->network_type_use = Wlan802_11DS;
pbss_entry->channel = pds_param_set->current_chan;
memcpy(pmadapter,
&pbss_entry->phy_param_set.ds_param_set,
pds_param_set, MIN(total_ie_len,
sizeof
(IEEEtypes_DsParamSet_t)));
pbss_entry->phy_param_set.ds_param_set.len =
MIN(element_len, (sizeof(IEEEtypes_DsParamSet_t)
-
sizeof(IEEEtypes_Header_t)));
break;
case CF_PARAM_SET:
pcf_param_set = (IEEEtypes_CfParamSet_t *)pcurrent_ptr;
memcpy(pmadapter,
&pbss_entry->ss_param_set.cf_param_set,
pcf_param_set, MIN(total_ie_len,
sizeof
(IEEEtypes_CfParamSet_t)));
pbss_entry->ss_param_set.cf_param_set.len =
MIN(element_len, (sizeof(IEEEtypes_CfParamSet_t)
-
sizeof(IEEEtypes_Header_t)));
break;
case IBSS_PARAM_SET:
pibss_param_set =
(IEEEtypes_IbssParamSet_t *)pcurrent_ptr;
pbss_entry->atim_window =
wlan_le16_to_cpu(pibss_param_set->atim_window);
memcpy(pmadapter,
&pbss_entry->ss_param_set.ibss_param_set,
pibss_param_set, MIN(total_ie_len,
sizeof
(IEEEtypes_IbssParamSet_t)));
pbss_entry->ss_param_set.ibss_param_set.len =
MIN(element_len,
(sizeof(IEEEtypes_IbssParamSet_t)
- sizeof(IEEEtypes_Header_t)));
break;
/* Handle Country Info IE */
case COUNTRY_INFO:
pcountry_info =
(IEEEtypes_CountryInfoSet_t *)pcurrent_ptr;
if (pcountry_info->len <
sizeof(pcountry_info->country_code) ||
(unsigned)(pcountry_info->len + 2) >
sizeof(IEEEtypes_CountryInfoFullSet_t)) {
PRINTM(MERROR,
"InterpretIE: 11D- Err "
"country_info len =%d min=%d max=%d\n",
pcountry_info->len,
sizeof(pcountry_info->country_code),
sizeof(IEEEtypes_CountryInfoFullSet_t));
LEAVE();
return MLAN_STATUS_FAILURE;
}
memcpy(pmadapter, &pbss_entry->country_info,
pcountry_info, pcountry_info->len + 2);
HEXDUMP("InterpretIE: 11D- country_info:",
(t_u8 *)pcountry_info,
(t_u32)(pcountry_info->len + 2));
break;
case ERP_INFO:
perp_info = (IEEEtypes_ERPInfo_t *)pcurrent_ptr;
pbss_entry->erp_flags = perp_info->erp_flags;
break;
case POWER_CONSTRAINT:
case POWER_CAPABILITY:
case TPC_REPORT:
case CHANNEL_SWITCH_ANN:
case QUIET:
case IBSS_DFS:
case SUPPORTED_CHANNELS:
case TPC_REQUEST:
wlan_11h_process_bss_elem(pmadapter,
&pbss_entry->
wlan_11h_bss_info,
pcurrent_ptr);
break;
case EXTENDED_SUPPORTED_RATES:
/*
* Only process extended supported rate
* if data rate is already found.
* Data rate IE should come before
* extended supported rate IE
*/
if (found_data_rate_ie) {
if ((element_len + rate_size) >
WLAN_SUPPORTED_RATES) {
bytes_to_copy =
(WLAN_SUPPORTED_RATES -
rate_size);
} else {
bytes_to_copy = element_len;
}
prate = (t_u8 *)pbss_entry->data_rates;
prate += rate_size;
memcpy(pmadapter, prate, pcurrent_ptr + 2,
bytes_to_copy);
prate = (t_u8 *)pbss_entry->supported_rates;
prate += rate_size;
memcpy(pmadapter, prate, pcurrent_ptr + 2,
bytes_to_copy);
}
HEXDUMP("InterpretIE: ExtSupportedRates:",
pbss_entry->supported_rates,
element_len + rate_size);
break;
case VENDOR_SPECIFIC_221:
pvendor_ie = (IEEEtypes_VendorSpecific_t *)pcurrent_ptr;
if (!memcmp
(pmadapter, pvendor_ie->vend_hdr.oui, wpa_oui,
sizeof(wpa_oui))) {
pbss_entry->pwpa_ie =
(IEEEtypes_VendorSpecific_t *)
pcurrent_ptr;
pbss_entry->wpa_offset =
(t_u16)(pcurrent_ptr -
pbss_entry->pbeacon_buf);
HEXDUMP("InterpretIE: Resp WPA_IE",
(t_u8 *)pbss_entry->pwpa_ie,
((*(pbss_entry->pwpa_ie)).vend_hdr.len +
sizeof(IEEEtypes_Header_t)));
} else if (!memcmp
(pmadapter, pvendor_ie->vend_hdr.oui,
wmm_oui, sizeof(wmm_oui))) {
if (total_ie_len ==
sizeof(IEEEtypes_WmmParameter_t)
|| total_ie_len ==
sizeof(IEEEtypes_WmmInfo_t)) {
/*
* Only accept and copy the WMM IE if
* it matches the size expected for the
* WMM Info IE or the WMM Parameter IE.
*/
memcpy(pmadapter,
(t_u8 *)&pbss_entry->wmm_ie,
pcurrent_ptr, total_ie_len);
HEXDUMP("InterpretIE: Resp WMM_IE",
(t_u8 *)&pbss_entry->wmm_ie,
total_ie_len);
}
}
break;
case RSN_IE:
pbss_entry->prsn_ie =
(IEEEtypes_Generic_t *)pcurrent_ptr;
pbss_entry->rsn_offset =
(t_u16)(pcurrent_ptr - pbss_entry->pbeacon_buf);
HEXDUMP("InterpretIE: Resp RSN_IE",
(t_u8 *)pbss_entry->prsn_ie,
(*(pbss_entry->prsn_ie)).ieee_hdr.len +
sizeof(IEEEtypes_Header_t));
break;
case WAPI_IE:
pbss_entry->pwapi_ie =
(IEEEtypes_Generic_t *)pcurrent_ptr;
pbss_entry->wapi_offset =
(t_u16)(pcurrent_ptr - pbss_entry->pbeacon_buf);
HEXDUMP("InterpretIE: Resp WAPI_IE",
(t_u8 *)pbss_entry->pwapi_ie,
(*(pbss_entry->pwapi_ie)).ieee_hdr.len +
sizeof(IEEEtypes_Header_t));
break;
case HT_CAPABILITY:
pbss_entry->pht_cap = (IEEEtypes_HTCap_t *)pcurrent_ptr;
pbss_entry->ht_cap_offset =
(t_u16)(pcurrent_ptr - pbss_entry->pbeacon_buf);
HEXDUMP("InterpretIE: Resp HTCAP_IE",
(t_u8 *)pbss_entry->pht_cap,
(*(pbss_entry->pht_cap)).ieee_hdr.len +
sizeof(IEEEtypes_Header_t));
break;
case HT_OPERATION:
pbss_entry->pht_info =
(IEEEtypes_HTInfo_t *)pcurrent_ptr;
pbss_entry->ht_info_offset =
(t_u16)(pcurrent_ptr - pbss_entry->pbeacon_buf);
HEXDUMP("InterpretIE: Resp HTINFO_IE",
(t_u8 *)pbss_entry->pht_info,
(*(pbss_entry->pht_info)).ieee_hdr.len +
sizeof(IEEEtypes_Header_t));
break;
case BSSCO_2040:
pbss_entry->pbss_co_2040 =
(IEEEtypes_2040BSSCo_t *)pcurrent_ptr;
pbss_entry->bss_co_2040_offset =
(t_u16)(pcurrent_ptr - pbss_entry->pbeacon_buf);
HEXDUMP("InterpretIE: Resp 2040BSSCOEXISTANCE_IE",
(t_u8 *)pbss_entry->pbss_co_2040,
(*(pbss_entry->pbss_co_2040)).ieee_hdr.len +
sizeof(IEEEtypes_Header_t));
break;
case EXT_CAPABILITY:
pbss_entry->pext_cap =
(IEEEtypes_ExtCap_t *)pcurrent_ptr;
pbss_entry->ext_cap_offset =
(t_u16)(pcurrent_ptr - pbss_entry->pbeacon_buf);
HEXDUMP("InterpretIE: Resp EXTCAP_IE",
(t_u8 *)pbss_entry->pext_cap,
(*(pbss_entry->pext_cap)).ieee_hdr.len +
sizeof(IEEEtypes_Header_t));
break;
case OVERLAPBSSSCANPARAM:
pbss_entry->poverlap_bss_scan_param =
(IEEEtypes_OverlapBSSScanParam_t *)pcurrent_ptr;
pbss_entry->overlap_bss_offset =
(t_u16)(pcurrent_ptr - pbss_entry->pbeacon_buf);
HEXDUMP("InterpretIE: Resp OBSS_IE",
(t_u8 *)pbss_entry->poverlap_bss_scan_param,
(*(pbss_entry->poverlap_bss_scan_param)).
ieee_hdr.len + sizeof(IEEEtypes_Header_t));
break;
case MOBILITY_DOMAIN:
PRINTM(MCMND, "Mobility Domain IE received in Scan\n");
pbss_entry->pmd_ie =
(IEEEtypes_MobilityDomain_t *)pcurrent_ptr;
pbss_entry->md_offset =
(t_u16)(pcurrent_ptr - pbss_entry->pbeacon_buf);
HEXDUMP("InterpretIE: Resp Mobility Domain IE",
(t_u8 *)pbss_entry->pmd_ie,
(*(pbss_entry->pmd_ie)).ieee_hdr.len +
sizeof(IEEEtypes_Header_t));
break;
default:
break;
}
pcurrent_ptr += element_len + 2;
/* Need to account for IE ID and IE Len */
bytes_left_for_current_beacon -= (element_len + 2);
} /* while (bytes_left_for_current_beacon > 2) */
LEAVE();
return ret;
}
/**
* @brief Adjust ie's position in BSSDescriptor_t
*
* @param pmpriv A pointer to mlan_private structure
* @param pbss_entry A pointer to BSSDescriptor_t structure
*
* @return N/A
*/
static t_void
wlan_adjust_ie_in_bss_entry(IN mlan_private *pmpriv,
IN BSSDescriptor_t *pbss_entry)
{
ENTER();
if (pbss_entry->pbeacon_buf) {
if (pbss_entry->pwpa_ie) {
pbss_entry->pwpa_ie = (IEEEtypes_VendorSpecific_t *)
(pbss_entry->pbeacon_buf +
pbss_entry->wpa_offset);
}
if (pbss_entry->prsn_ie) {
pbss_entry->prsn_ie = (IEEEtypes_Generic_t *)
(pbss_entry->pbeacon_buf +
pbss_entry->rsn_offset);
}
if (pbss_entry->pwapi_ie) {
pbss_entry->pwapi_ie = (IEEEtypes_Generic_t *)
(pbss_entry->pbeacon_buf +
pbss_entry->wapi_offset);
}
if (pbss_entry->pmd_ie) {
pbss_entry->pmd_ie = (IEEEtypes_MobilityDomain_t *)
(pbss_entry->pbeacon_buf +
pbss_entry->md_offset);
}
if (pbss_entry->pht_cap) {
pbss_entry->pht_cap = (IEEEtypes_HTCap_t *)
(pbss_entry->pbeacon_buf +
pbss_entry->ht_cap_offset);
}
if (pbss_entry->pht_info) {
pbss_entry->pht_info = (IEEEtypes_HTInfo_t *)
(pbss_entry->pbeacon_buf +
pbss_entry->ht_info_offset);
}
if (pbss_entry->pbss_co_2040) {
pbss_entry->pbss_co_2040 = (IEEEtypes_2040BSSCo_t *)
(pbss_entry->pbeacon_buf +
pbss_entry->bss_co_2040_offset);
}
if (pbss_entry->pext_cap) {
pbss_entry->pext_cap = (IEEEtypes_ExtCap_t *)
(pbss_entry->pbeacon_buf +
pbss_entry->ext_cap_offset);
}
if (pbss_entry->poverlap_bss_scan_param) {
pbss_entry->poverlap_bss_scan_param =
(IEEEtypes_OverlapBSSScanParam_t *)
(pbss_entry->pbeacon_buf +
pbss_entry->overlap_bss_offset);
}
} else {
pbss_entry->pwpa_ie = MNULL;
pbss_entry->wpa_offset = 0;
pbss_entry->prsn_ie = MNULL;
pbss_entry->rsn_offset = 0;
pbss_entry->pwapi_ie = MNULL;
pbss_entry->wapi_offset = 0;
pbss_entry->pmd_ie = MNULL;
pbss_entry->md_offset = 0;
pbss_entry->pht_cap = MNULL;
pbss_entry->ht_cap_offset = 0;
pbss_entry->pht_info = MNULL;
pbss_entry->ht_info_offset = 0;
pbss_entry->pbss_co_2040 = MNULL;
pbss_entry->bss_co_2040_offset = 0;
pbss_entry->pext_cap = MNULL;
pbss_entry->ext_cap_offset = 0;
pbss_entry->poverlap_bss_scan_param = MNULL;
pbss_entry->overlap_bss_offset = 0;
}
LEAVE();
return;
}
/**
* @brief Store a beacon or probe response for a BSS returned in the scan
*
* Store a new scan response or an update for a previous scan response. New
* entries need to verify that they do not exceed the total amount of
* memory allocated for the table.
* Replacement entries need to take into consideration the amount of space
* currently allocated for the beacon/probe response and adjust the entry
* as needed.
*
* A small amount of extra pad (SCAN_BEACON_ENTRY_PAD) is generally reserved
* for an entry in case it is a beacon since a probe response for the
* network will by larger per the standard. This helps to reduce the
* amount of memory copying to fit a new probe response into an entry
* already occupied by a network's previously stored beacon.
*
* @param pmpriv A pointer to mlan_private structure
* @param beacon_idx Index in the scan table to store this entry; may be
* replacing an older duplicate entry for this BSS
* @param num_of_ent Number of entries currently in the table
* @param pnew_beacon Pointer to the new beacon/probe response to save
*
* @return N/A
*/
static t_void
wlan_ret_802_11_scan_store_beacon(IN mlan_private *pmpriv,
IN t_u32 beacon_idx,
IN t_u32 num_of_ent,
IN BSSDescriptor_t *pnew_beacon)
{
mlan_adapter *pmadapter = pmpriv->adapter;
t_u8 *pbcn_store;
t_u32 new_bcn_size;
t_u32 old_bcn_size;
t_u32 bcn_space;
t_u32 adj_idx;
mlan_status ret = MLAN_STATUS_SUCCESS;
t_u8 *tmp_buf;
t_u16 bcn_size = 0;
t_u32 bcn_offset = 0;
ENTER();
if (pmadapter->pscan_table[beacon_idx].pbeacon_buf) {
new_bcn_size = pnew_beacon->beacon_buf_size;
old_bcn_size =
pmadapter->pscan_table[beacon_idx].beacon_buf_size;
bcn_space =
pmadapter->pscan_table[beacon_idx].beacon_buf_size_max;
pbcn_store = pmadapter->pscan_table[beacon_idx].pbeacon_buf;
/* Set the max to be the same as current entry unless changed below */
pnew_beacon->beacon_buf_size_max = bcn_space;
if (new_bcn_size == old_bcn_size) {
/*
* Beacon is the same size as the previous entry.
* Replace the previous contents with the scan result
*/
memcpy(pmadapter, pbcn_store,
pnew_beacon->pbeacon_buf,
pnew_beacon->beacon_buf_size);
} else if (new_bcn_size <= bcn_space) {
/*
* New beacon size will fit in the amount of space
* we have previously allocated for it
*/
/* Copy the new beacon buffer entry over the old one */
memcpy(pmadapter, pbcn_store, pnew_beacon->pbeacon_buf,
new_bcn_size);
/*
* If the old beacon size was less than the
* maximum we had allotted for the entry, and
* the new entry is even smaller, reset the
* max size to the old beacon entry and compress
* the storage space (leaving a new pad space of
* (old_bcn_size - new_bcn_size).
*/
if (old_bcn_size < bcn_space &&
new_bcn_size <= old_bcn_size) {
/*
* Old Beacon size is smaller than the
* allotted storage size. Shrink the
* allotted storage space.
*/
PRINTM(MINFO,
"AppControl: Smaller Duplicate Beacon (%d), "
"old = %d, new = %d, space = %d, left = %d\n",
beacon_idx, old_bcn_size, new_bcn_size,
bcn_space,
(pmadapter->bcn_buf_size -
(pmadapter->pbcn_buf_end -
pmadapter->bcn_buf)));
/*
* memmove (since the memory overlaps) the data
* after the beacon we just stored to the end
* of the current beacon. This cleans up any
* unused space the old larger beacon was using
* in the buffer
*/
memmove(pmadapter,
(void *)((t_ptr)pbcn_store +
(t_ptr)old_bcn_size),
(void *)((t_ptr)pbcn_store +
(t_ptr)bcn_space),
(t_u32)((t_ptr)pmadapter->pbcn_buf_end -
((t_ptr)pbcn_store +
(t_ptr)bcn_space)));
/*
* Decrement the end pointer by the difference
* between the old larger size and the new
* smaller size since we are using less space
* due to the new beacon being smaller
*/
pmadapter->pbcn_buf_end -=
(bcn_space - old_bcn_size);
/*
* Set the maximum storage size to the old
* beacon size
*/
pnew_beacon->beacon_buf_size_max = old_bcn_size;
/* Adjust beacon buffer pointers that are past the current */
for (adj_idx = 0; adj_idx < num_of_ent;
adj_idx++) {
if (pmadapter->pscan_table[adj_idx].
pbeacon_buf > pbcn_store) {
pmadapter->pscan_table[adj_idx].
pbeacon_buf -=
(bcn_space -
old_bcn_size);
wlan_adjust_ie_in_bss_entry
(pmpriv,
&pmadapter->
pscan_table[adj_idx]);
}
}
}
} else if (pmadapter->pbcn_buf_end + (new_bcn_size - bcn_space)
< (pmadapter->bcn_buf + pmadapter->bcn_buf_size)) {
/*
* Beacon is larger than space previously allocated
* (bcn_space) and there is enough space left in the
* beaconBuffer to store the additional data
*/
PRINTM(MINFO,
"AppControl: Larger Duplicate Beacon (%d), "
"old = %d, new = %d, space = %d, left = %d\n",
beacon_idx, old_bcn_size, new_bcn_size,
bcn_space,
(pmadapter->bcn_buf_size -
(pmadapter->pbcn_buf_end -
pmadapter->bcn_buf)));
/*
* memmove (since the memory overlaps) the data
* after the beacon we just stored to the end of
* the current beacon. This moves the data for
* the beacons after this further in memory to
* make space for the new larger beacon we are
* about to copy in.
*/
memmove(pmadapter,
(void *)((t_ptr)pbcn_store +
(t_ptr)new_bcn_size),
(void *)((t_ptr)pbcn_store + (t_ptr)bcn_space),
(t_u32)((t_ptr)pmadapter->pbcn_buf_end -
((t_ptr)pbcn_store +
(t_ptr)bcn_space)));
/* Copy the new beacon buffer entry over the old one */
memcpy(pmadapter, pbcn_store, pnew_beacon->pbeacon_buf,
new_bcn_size);
/*
* Move the beacon end pointer by the amount of new
* beacon data we are adding
*/
pmadapter->pbcn_buf_end += (new_bcn_size - bcn_space);
/*
* This entry is bigger than the allotted max space
* previously reserved. Increase the max space to
* be equal to the new beacon size
*/
pnew_beacon->beacon_buf_size_max = new_bcn_size;
/* Adjust beacon buffer pointers that are past the current */
for (adj_idx = 0; adj_idx < num_of_ent; adj_idx++) {
if (pmadapter->pscan_table[adj_idx].
pbeacon_buf > pbcn_store) {
pmadapter->pscan_table[adj_idx].
pbeacon_buf +=
(new_bcn_size - bcn_space);
wlan_adjust_ie_in_bss_entry(pmpriv,
&pmadapter->
pscan_table
[adj_idx]);
}
}
} else {
/*
* Beacon is larger than the previously allocated
* space, but there is not enough free space to
* store the additional data
*/
PRINTM(MERROR,
"AppControl: Failed: Larger Duplicate Beacon (%d),"
" old = %d, new = %d, space = %d, left = %d\n",
beacon_idx, old_bcn_size, new_bcn_size,
bcn_space,
(pmadapter->bcn_buf_size -
(pmadapter->pbcn_buf_end -
pmadapter->bcn_buf)));
/* Storage failure, keep old beacon intact */
pnew_beacon->beacon_buf_size = old_bcn_size;
if (pnew_beacon->pwpa_ie)
pnew_beacon->wpa_offset =
pmadapter->pscan_table[beacon_idx].
wpa_offset;
if (pnew_beacon->prsn_ie)
pnew_beacon->rsn_offset =
pmadapter->pscan_table[beacon_idx].
rsn_offset;
if (pnew_beacon->pwapi_ie)
pnew_beacon->wapi_offset =
pmadapter->pscan_table[beacon_idx].
wapi_offset;
if (pnew_beacon->pmd_ie)
pnew_beacon->md_offset =
pmadapter->pscan_table[beacon_idx].
md_offset;
if (pnew_beacon->pht_cap)
pnew_beacon->ht_cap_offset =
pmadapter->pscan_table[beacon_idx].
ht_cap_offset;
if (pnew_beacon->pht_info)
pnew_beacon->ht_info_offset =
pmadapter->pscan_table[beacon_idx].
ht_info_offset;
if (pnew_beacon->pbss_co_2040)
pnew_beacon->bss_co_2040_offset =
pmadapter->pscan_table[beacon_idx].
bss_co_2040_offset;
if (pnew_beacon->pext_cap)
pnew_beacon->ext_cap_offset =
pmadapter->pscan_table[beacon_idx].
ext_cap_offset;
if (pnew_beacon->poverlap_bss_scan_param)
pnew_beacon->overlap_bss_offset =
pmadapter->pscan_table[beacon_idx].
overlap_bss_offset;
}
/* Point the new entry to its permanent storage space */
pnew_beacon->pbeacon_buf = pbcn_store;
wlan_adjust_ie_in_bss_entry(pmpriv, pnew_beacon);
} else {
if ((pmadapter->pbcn_buf_end + pnew_beacon->beacon_buf_size +
SCAN_BEACON_ENTRY_PAD > (pmadapter->bcn_buf +
pmadapter->bcn_buf_size)) &&
(pmadapter->bcn_buf_size < MAX_SCAN_BEACON_BUFFER)) {
/* no space for this entry, realloc bcn buffer */
ret = pmadapter->callbacks.moal_malloc(pmadapter->
pmoal_handle,
pmadapter->
bcn_buf_size +
DEFAULT_SCAN_BEACON_BUFFER,
MLAN_MEM_DEF,
(t_u8 **)
&tmp_buf);
if ((ret == MLAN_STATUS_SUCCESS) && (tmp_buf)) {
PRINTM(MCMND,
"Realloc Beacon buffer, old size=%d, new_size=%d\n",
pmadapter->bcn_buf_size,
pmadapter->bcn_buf_size +
DEFAULT_SCAN_BEACON_BUFFER);
bcn_size =
pmadapter->pbcn_buf_end -
pmadapter->bcn_buf;
memcpy(pmadapter, tmp_buf, pmadapter->bcn_buf,
bcn_size);
/* Adjust beacon buffer pointers that are past the current */
for (adj_idx = 0; adj_idx < num_of_ent;
adj_idx++) {
bcn_offset =
pmadapter->pscan_table[adj_idx].
pbeacon_buf -
pmadapter->bcn_buf;
pmadapter->pscan_table[adj_idx].
pbeacon_buf =
tmp_buf + bcn_offset;
wlan_adjust_ie_in_bss_entry(pmpriv,
&pmadapter->
pscan_table
[adj_idx]);
}
pmadapter->pbcn_buf_end = tmp_buf + bcn_size;
pmadapter->callbacks.moal_mfree(pmadapter->
pmoal_handle,
(t_u8 *)
pmadapter->
bcn_buf);
pmadapter->bcn_buf = tmp_buf;
pmadapter->bcn_buf_size +=
DEFAULT_SCAN_BEACON_BUFFER;
}
}
/*
* No existing beacon data exists for this entry, check to see
* if we can fit it in the remaining space
*/
if (pmadapter->pbcn_buf_end + pnew_beacon->beacon_buf_size +
SCAN_BEACON_ENTRY_PAD < (pmadapter->bcn_buf +
pmadapter->bcn_buf_size)) {
/*
* Copy the beacon buffer data from the local entry
* to the adapter dev struct buffer space used to
* store the raw beacon data for each entry in the
* scan table
*/
memcpy(pmadapter, pmadapter->pbcn_buf_end,
pnew_beacon->pbeacon_buf,
pnew_beacon->beacon_buf_size);
/*
* Update the beacon ptr to point to the table
* save area
*/
pnew_beacon->pbeacon_buf = pmadapter->pbcn_buf_end;
pnew_beacon->beacon_buf_size_max =
(pnew_beacon->beacon_buf_size +
SCAN_BEACON_ENTRY_PAD);
wlan_adjust_ie_in_bss_entry(pmpriv, pnew_beacon);
/* Increment the end pointer by the size reserved */
pmadapter->pbcn_buf_end +=
pnew_beacon->beacon_buf_size_max;
PRINTM(MINFO, "AppControl: Beacon[%02d] sz=%03d,"
" used = %04d, left = %04d\n",
beacon_idx,
pnew_beacon->beacon_buf_size,
(pmadapter->pbcn_buf_end - pmadapter->bcn_buf),
(pmadapter->bcn_buf_size -
(pmadapter->pbcn_buf_end -
pmadapter->bcn_buf)));
} else {
/*
* No space for new beacon
*/
PRINTM(MCMND, "AppControl: No space beacon (%d): "
MACSTR "; sz=%03d, left=%03d\n",
beacon_idx,
MAC2STR(pnew_beacon->mac_address),
pnew_beacon->beacon_buf_size,
(pmadapter->bcn_buf_size -
(pmadapter->pbcn_buf_end -
pmadapter->bcn_buf)));
/*
* Storage failure; clear storage records
* for this bcn
*/
pnew_beacon->pbeacon_buf = MNULL;
pnew_beacon->beacon_buf_size = 0;
pnew_beacon->beacon_buf_size_max = 0;
wlan_adjust_ie_in_bss_entry(pmpriv, pnew_beacon);
}
}
LEAVE();
}
/**
* @brief update beacon buffer of the current bss descriptor
*
* @param pmpriv A pointer to mlan_private structure
*
* @return MLAN_STATUS_SUCCESS, otherwise failure
*/
static mlan_status
wlan_update_curr_bcn(IN mlan_private *pmpriv)
{
BSSDescriptor_t *pcurr_bss = &pmpriv->curr_bss_params.bss_descriptor;
mlan_status ret = MLAN_STATUS_SUCCESS;
ENTER();
if (pmpriv->pcurr_bcn_buf && pmpriv->curr_bcn_size) {
pcurr_bss->pbeacon_buf = pmpriv->pcurr_bcn_buf;
pcurr_bss->beacon_buf_size = pmpriv->curr_bcn_size;
pcurr_bss->beacon_buf_size_max = pmpriv->curr_bcn_size;
/* adjust the pointers in the current bss descriptor */
if (pcurr_bss->pwpa_ie) {
pcurr_bss->pwpa_ie = (IEEEtypes_VendorSpecific_t *)
(pcurr_bss->pbeacon_buf +
pcurr_bss->wpa_offset);
}
if (pcurr_bss->prsn_ie) {
pcurr_bss->prsn_ie = (IEEEtypes_Generic_t *)
(pcurr_bss->pbeacon_buf +
pcurr_bss->rsn_offset);
}
if (pcurr_bss->pmd_ie) {
pcurr_bss->pmd_ie = (IEEEtypes_MobilityDomain_t *)
(pcurr_bss->pbeacon_buf + pcurr_bss->md_offset);
}
if (pcurr_bss->pht_cap) {
pcurr_bss->pht_cap = (IEEEtypes_HTCap_t *)
(pcurr_bss->pbeacon_buf +
pcurr_bss->ht_cap_offset);
}
if (pcurr_bss->pht_info) {
pcurr_bss->pht_info = (IEEEtypes_HTInfo_t *)
(pcurr_bss->pbeacon_buf +
pcurr_bss->ht_info_offset);
}
if (pcurr_bss->pbss_co_2040) {
pcurr_bss->pbss_co_2040 = (IEEEtypes_2040BSSCo_t *)
(pcurr_bss->pbeacon_buf +
pcurr_bss->bss_co_2040_offset);
}
if (pcurr_bss->pext_cap) {
pcurr_bss->pext_cap = (IEEEtypes_ExtCap_t *)
(pcurr_bss->pbeacon_buf +
pcurr_bss->ext_cap_offset);
}
if (pcurr_bss->poverlap_bss_scan_param) {
pcurr_bss->poverlap_bss_scan_param =
(IEEEtypes_OverlapBSSScanParam_t *)
(pcurr_bss->pbeacon_buf +
pcurr_bss->overlap_bss_offset);
}
PRINTM(MINFO, "current beacon restored %d\n",
pmpriv->curr_bcn_size);
} else {
PRINTM(MERROR, "curr_bcn_buf not saved\n");
ret = MLAN_STATUS_FAILURE;
}
LEAVE();
return ret;
}
/**
* @brief Post process the scan table after a new scan command has completed
*
* Inspect each entry of the scan table and try to find an entry that
* matches our current associated/joined network from the scan. If
* one is found, update the stored copy of the BSSDescriptor for our
* current network.
*
* Debug dump the current scan table contents if compiled accordingly.
*
* @param pmpriv A pointer to mlan_private structure
*
* @return N/A
*/
static t_void
wlan_scan_process_results(IN mlan_private *pmpriv)
{
mlan_adapter *pmadapter = pmpriv->adapter;
t_s32 j;
t_u32 i;
mlan_status ret = MLAN_STATUS_SUCCESS;
BSSDescriptor_t *bss_new_entry = MNULL;
pmlan_callbacks pcb = &pmadapter->callbacks;
ENTER();
if (pmpriv->media_connected == MTRUE) {
j = wlan_find_ssid_in_list(pmpriv,
&pmpriv->curr_bss_params.
bss_descriptor.ssid,
pmpriv->curr_bss_params.
bss_descriptor.mac_address,
pmpriv->bss_mode);
if (j >= 0) {
pmadapter->callbacks.moal_spin_lock(pmadapter->
pmoal_handle,
pmpriv->
curr_bcn_buf_lock);
pmpriv->curr_bss_params.bss_descriptor.pwpa_ie = MNULL;
pmpriv->curr_bss_params.bss_descriptor.wpa_offset = 0;
pmpriv->curr_bss_params.bss_descriptor.prsn_ie = MNULL;
pmpriv->curr_bss_params.bss_descriptor.rsn_offset = 0;
pmpriv->curr_bss_params.bss_descriptor.pwapi_ie = MNULL;
pmpriv->curr_bss_params.bss_descriptor.wapi_offset = 0;
pmpriv->curr_bss_params.bss_descriptor.pmd_ie = MNULL;
pmpriv->curr_bss_params.bss_descriptor.md_offset = 0;
pmpriv->curr_bss_params.bss_descriptor.pht_cap = MNULL;
pmpriv->curr_bss_params.bss_descriptor.ht_cap_offset =
0;
pmpriv->curr_bss_params.bss_descriptor.pht_info = MNULL;
pmpriv->curr_bss_params.bss_descriptor.ht_info_offset =
0;
pmpriv->curr_bss_params.bss_descriptor.pbss_co_2040 =
MNULL;
pmpriv->curr_bss_params.bss_descriptor.
bss_co_2040_offset = 0;
pmpriv->curr_bss_params.bss_descriptor.pext_cap = MNULL;
pmpriv->curr_bss_params.bss_descriptor.ext_cap_offset =
0;
pmpriv->curr_bss_params.bss_descriptor.
poverlap_bss_scan_param = MNULL;
pmpriv->curr_bss_params.bss_descriptor.
overlap_bss_offset = 0;
pmpriv->curr_bss_params.bss_descriptor.pbeacon_buf =
MNULL;
pmpriv->curr_bss_params.bss_descriptor.beacon_buf_size =
0;
pmpriv->curr_bss_params.bss_descriptor.
beacon_buf_size_max = 0;
PRINTM(MINFO,
"Found current ssid/bssid in list @ index #%d\n",
j);
/* Make a copy of current BSSID descriptor */
memcpy(pmadapter,
&pmpriv->curr_bss_params.bss_descriptor,
&pmadapter->pscan_table[j],
sizeof(pmpriv->curr_bss_params.bss_descriptor));
pmadapter->callbacks.moal_spin_unlock(pmadapter->
pmoal_handle,
pmpriv->
curr_bcn_buf_lock);
wlan_save_curr_bcn(pmpriv);
} else {
//Apend to the end of scan table
if (pmpriv->pcurr_bcn_buf && pmpriv->curr_bcn_size) {
ret = pcb->moal_malloc(pmadapter->pmoal_handle,
sizeof(BSSDescriptor_t),
MLAN_MEM_DEF,
(t_u8 **)&bss_new_entry);
if (ret == MLAN_STATUS_SUCCESS && bss_new_entry) {
memcpy(pmadapter, bss_new_entry,
&pmpriv->curr_bss_params.
bss_descriptor,
sizeof(pmpriv->curr_bss_params.
bss_descriptor));
if (pmadapter->num_in_scan_table <
MRVDRV_MAX_BSSID_LIST)
pmadapter->num_in_scan_table++;
pmadapter->pscan_table[pmadapter->
num_in_scan_table
-
1].pbeacon_buf =
MNULL;
wlan_ret_802_11_scan_store_beacon
(pmpriv,
pmadapter->num_in_scan_table -
1,
pmadapter->num_in_scan_table,
bss_new_entry);
if (bss_new_entry->pbeacon_buf == MNULL)
pmadapter->num_in_scan_table--;
else
memcpy(pmadapter,
&pmadapter->
pscan_table[pmadapter->
num_in_scan_table
- 1],
bss_new_entry,
sizeof(BSSDescriptor_t));
pcb->moal_mfree(pmadapter->pmoal_handle,
(t_u8 *)bss_new_entry);
}
}
}
}
for (i = 0; i < pmadapter->num_in_scan_table; i++)
PRINTM(MINFO, "Scan:(%02d) " MACSTR ", "
"RSSI[%03d], SSID[%s]\n",
i,
MAC2STR(pmadapter->pscan_table[i].mac_address),
(t_s32)pmadapter->pscan_table[i].rssi,
pmadapter->pscan_table[i].ssid.ssid);
/*
* Prepares domain info from scan table and downloads the
* domain info command to the FW.
*/
wlan_11d_prepare_dnld_domain_info_cmd(pmpriv);
PRINTM(MMSG, "wlan: SCAN COMPLETED: scanned AP count=%d\n",
pmadapter->num_in_scan_table);
LEAVE();
}
/**
* @brief Delete a specific indexed entry from the scan table.
*
* Delete the scan table entry indexed by table_idx. Compact the remaining
* entries and adjust any buffering of beacon/probe response data
* if needed.
*
* @param pmpriv A pointer to mlan_private structure
* @param table_idx Scan table entry index to delete from the table
*
* @return N/A
*
* @pre table_idx must be an index to a valid entry
*/
static t_void
wlan_scan_delete_table_entry(IN mlan_private *pmpriv, IN t_s32 table_idx)
{
mlan_adapter *pmadapter = pmpriv->adapter;
t_u32 del_idx;
t_u32 beacon_buf_adj;
t_u8 *pbeacon_buf;
ENTER();
/*
* Shift the saved beacon buffer data for the scan table back over the
* entry being removed. Update the end of buffer pointer. Save the
* deleted buffer allocation size for pointer adjustments for entries
* compacted after the deleted index.
*/
beacon_buf_adj = pmadapter->pscan_table[table_idx].beacon_buf_size_max;
PRINTM(MINFO,
"Scan: Delete Entry %d, beacon buffer removal = %d bytes\n",
table_idx, beacon_buf_adj);
/* Check if the table entry had storage allocated for its beacon */
if (beacon_buf_adj) {
pbeacon_buf = pmadapter->pscan_table[table_idx].pbeacon_buf;
/*
* Remove the entry's buffer space, decrement the table
* end pointer by the amount we are removing
*/
pmadapter->pbcn_buf_end -= beacon_buf_adj;
PRINTM(MINFO,
"Scan: Delete Entry %d, compact data: %p <- %p (sz = %d)\n",
table_idx,
pbeacon_buf,
pbeacon_buf + beacon_buf_adj,
pmadapter->pbcn_buf_end - pbeacon_buf);
/*
* Compact data storage. Copy all data after the deleted entry's
* end address (pbeacon_buf + beacon_buf_adj) back to the original
* start address (pbeacon_buf).
*
* Scan table entries affected by the move will have their entry
* pointer adjusted below.
*
* Use memmove since the dest/src memory regions overlap.
*/
memmove(pmadapter, pbeacon_buf,
(void *)((t_ptr)pbeacon_buf + (t_ptr)beacon_buf_adj),
(t_u32)((t_ptr)pmadapter->pbcn_buf_end -
(t_ptr)pbeacon_buf));
}
PRINTM(MINFO, "Scan: Delete Entry %d, num_in_scan_table = %d\n",
table_idx, pmadapter->num_in_scan_table);
/*
* Shift all of the entries after the table_idx back by one, compacting
* the table and removing the requested entry
*/
for (del_idx = table_idx; (del_idx + 1) < pmadapter->num_in_scan_table;
del_idx++) {
/* Copy the next entry over this one */
memcpy(pmadapter, pmadapter->pscan_table + del_idx,
pmadapter->pscan_table + del_idx + 1,
sizeof(BSSDescriptor_t));
/*
* Adjust this entry's pointer to its beacon buffer based on the
* removed/compacted entry from the deleted index. Don't decrement
* if the buffer pointer is MNULL (no data stored for this entry).
*/
if (pmadapter->pscan_table[del_idx].pbeacon_buf) {
pmadapter->pscan_table[del_idx].pbeacon_buf -=
beacon_buf_adj;
if (pmadapter->pscan_table[del_idx].pwpa_ie) {
pmadapter->pscan_table[del_idx].pwpa_ie =
(IEEEtypes_VendorSpecific_t *)
(pmadapter->pscan_table[del_idx].
pbeacon_buf +
pmadapter->pscan_table[del_idx].
wpa_offset);
}
if (pmadapter->pscan_table[del_idx].prsn_ie) {
pmadapter->pscan_table[del_idx].prsn_ie =
(IEEEtypes_Generic_t *)
(pmadapter->pscan_table[del_idx].
pbeacon_buf +
pmadapter->pscan_table[del_idx].
rsn_offset);
}
if (pmadapter->pscan_table[del_idx].pwapi_ie) {
pmadapter->pscan_table[del_idx].pwapi_ie =
(IEEEtypes_Generic_t *)
(pmadapter->pscan_table[del_idx].
pbeacon_buf +
pmadapter->pscan_table[del_idx].
wapi_offset);
}
if (pmadapter->pscan_table[del_idx].pmd_ie) {
pmadapter->pscan_table[del_idx].pmd_ie =
(IEEEtypes_MobilityDomain_t *)
(pmadapter->pscan_table[del_idx].
pbeacon_buf +
pmadapter->pscan_table[del_idx].
md_offset);
}
if (pmadapter->pscan_table[del_idx].pht_cap) {
pmadapter->pscan_table[del_idx].pht_cap =
(IEEEtypes_HTCap_t *)(pmadapter->
pscan_table
[del_idx].
pbeacon_buf +
pmadapter->
pscan_table
[del_idx].
ht_cap_offset);
}
if (pmadapter->pscan_table[del_idx].pht_info) {
pmadapter->pscan_table[del_idx].pht_info =
(IEEEtypes_HTInfo_t *)(pmadapter->
pscan_table
[del_idx].
pbeacon_buf +
pmadapter->
pscan_table
[del_idx].
ht_info_offset);
}
if (pmadapter->pscan_table[del_idx].pbss_co_2040) {
pmadapter->pscan_table[del_idx].pbss_co_2040 =
(IEEEtypes_2040BSSCo_t *)(pmadapter->
pscan_table
[del_idx].
pbeacon_buf +
pmadapter->
pscan_table
[del_idx].
bss_co_2040_offset);
}
if (pmadapter->pscan_table[del_idx].pext_cap) {
pmadapter->pscan_table[del_idx].pext_cap =
(IEEEtypes_ExtCap_t *)(pmadapter->
pscan_table
[del_idx].
pbeacon_buf +
pmadapter->
pscan_table
[del_idx].
ext_cap_offset);
}
if (pmadapter->pscan_table[del_idx].
poverlap_bss_scan_param) {
pmadapter->pscan_table[del_idx].
poverlap_bss_scan_param =
(IEEEtypes_OverlapBSSScanParam_t
*)(pmadapter->pscan_table[del_idx].
pbeacon_buf +
pmadapter->pscan_table[del_idx].
overlap_bss_offset);
}
}
}
/* The last entry is invalid now that it has been deleted or moved back */
memset(pmadapter,
pmadapter->pscan_table + pmadapter->num_in_scan_table - 1, 0x00,
sizeof(BSSDescriptor_t));
pmadapter->num_in_scan_table--;
LEAVE();
}
/**
* @brief Delete all occurrences of a given SSID from the scan table
*
* Iterate through the scan table and delete all entries that match a given
* SSID. Compact the remaining scan table entries.
*
* @param pmpriv A pointer to mlan_private structure
* @param pdel_ssid Pointer to an SSID to be used in deleting all
* matching SSIDs from the scan table
*
* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
*/
static mlan_status
wlan_scan_delete_ssid_table_entry(IN mlan_private *pmpriv,
IN mlan_802_11_ssid *pdel_ssid)
{
mlan_status ret = MLAN_STATUS_FAILURE;
t_s32 table_idx;
ENTER();
PRINTM(MINFO, "Scan: Delete Ssid Entry: %-32s\n", pdel_ssid->ssid);
/*
* If the requested SSID is found in the table, delete it. Then keep
* searching the table for multiple entries for the SSID until no
* more are found
*/
while ((table_idx = wlan_find_ssid_in_list(pmpriv,
pdel_ssid,
MNULL,
MLAN_BSS_MODE_AUTO)) >= 0) {
PRINTM(MINFO, "Scan: Delete SSID Entry: Found Idx = %d\n",
table_idx);
ret = MLAN_STATUS_SUCCESS;
wlan_scan_delete_table_entry(pmpriv, table_idx);
}
LEAVE();
return ret;
}
/********************************************************
Global Functions
********************************************************/
/**
* @brief Check if a scanned network compatible with the driver settings
*
* WEP WPA WPA2 ad-hoc encrypt Network
* enabled enabled enabled AES mode Privacy WPA WPA2 Compatible
* 0 0 0 0 NONE 0 0 0 yes No security
* 0 1 0 0 x 1x 1 x yes WPA (disable HT if no AES)
* 0 0 1 0 x 1x x 1 yes WPA2 (disable HT if no AES)
* 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES
* 1 0 0 0 NONE 1 0 0 yes Static WEP (disable HT)
* 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP
*
* @param pmpriv A pointer to mlan_private
* @param index Index in scan table to check against current driver settings
* @param mode Network mode: Infrastructure or IBSS
*
* @return Index in ScanTable, or negative value if error
*/
t_s32
wlan_is_network_compatible(IN mlan_private *pmpriv,
IN t_u32 index, IN t_u32 mode)
{
mlan_adapter *pmadapter = pmpriv->adapter;
BSSDescriptor_t *pbss_desc;
ENTER();
pbss_desc = &pmadapter->pscan_table[index];
/* Don't check for compatibility if roaming */
if ((pmpriv->media_connected == MTRUE)
&& (pmpriv->bss_mode == MLAN_BSS_MODE_INFRA)
&& (pbss_desc->bss_mode == MLAN_BSS_MODE_INFRA)) {
LEAVE();
return index;
}
pbss_desc->disable_11n = MFALSE;
if (pbss_desc->wlan_11h_bss_info.chan_switch_ann.element_id ==
CHANNEL_SWITCH_ANN) {
PRINTM(MINFO,
"Don't connect to AP with CHANNEL_SWITCH_ANN IE.\n");
LEAVE();
return -1;
}
if (pmpriv->wps.session_enable == MTRUE) {
PRINTM(MINFO, "Return success directly in WPS period\n");
LEAVE();
return index;
}
if ((pbss_desc->bss_mode == mode) &&
(pmpriv->sec_info.ewpa_enabled == MTRUE
#ifdef DRV_EMBEDDED_SUPPLICANT
|| supplicantIsEnabled(pmpriv->psapriv)
#endif
)) {
if (((pbss_desc->pwpa_ie) &&
((*(pbss_desc->pwpa_ie)).vend_hdr.element_id == WPA_IE)) ||
((pbss_desc->prsn_ie) &&
((*(pbss_desc->prsn_ie)).ieee_hdr.element_id == RSN_IE))) {
if (((pmpriv->adapter->config_bands & BAND_GN ||
pmpriv->adapter->config_bands & BAND_AN) &&
pbss_desc->pht_cap)
&& (pmpriv->bss_mode == MLAN_BSS_MODE_INFRA)
&& !is_wpa_oui_present(pmpriv->adapter, pbss_desc,
CIPHER_SUITE_CCMP)
&& !is_rsn_oui_present(pmpriv->adapter, pbss_desc,
CIPHER_SUITE_CCMP)) {
if (is_wpa_oui_present
(pmpriv->adapter, pbss_desc,
CIPHER_SUITE_TKIP)
|| is_rsn_oui_present(pmpriv->adapter,
pbss_desc,
CIPHER_SUITE_TKIP)) {
PRINTM(MINFO,
"Disable 11n if AES is not supported by AP\n");
pbss_desc->disable_11n = MTRUE;
} else {
LEAVE();
return -1;
}
}
LEAVE();
return index;
} else {
PRINTM(MINFO,
"ewpa_enabled: Ignore none WPA/WPA2 AP\n");
LEAVE();
return -1;
}
}
if (pmpriv->sec_info.wapi_enabled &&
(pbss_desc->pwapi_ie &&
((*(pbss_desc->pwapi_ie)).ieee_hdr.element_id == WAPI_IE))) {
PRINTM(MINFO, "Return success for WAPI AP\n");
LEAVE();
return index;
}
if (pbss_desc->bss_mode == mode) {
if (pmpriv->sec_info.wep_status == Wlan802_11WEPDisabled
&& !pmpriv->sec_info.wpa_enabled
&& !pmpriv->sec_info.wpa2_enabled
&& ((!pbss_desc->pwpa_ie) ||
((*(pbss_desc->pwpa_ie)).vend_hdr.element_id != WPA_IE))
&& ((!pbss_desc->prsn_ie) ||
((*(pbss_desc->prsn_ie)).ieee_hdr.element_id != RSN_IE))
&& !pmpriv->adhoc_aes_enabled &&
pmpriv->sec_info.encryption_mode ==
MLAN_ENCRYPTION_MODE_NONE && !pbss_desc->privacy) {
/* No security */
LEAVE();
return index;
} else if (pmpriv->sec_info.wep_status == Wlan802_11WEPEnabled
&& !pmpriv->sec_info.wpa_enabled
&& !pmpriv->sec_info.wpa2_enabled
&& !pmpriv->adhoc_aes_enabled
&& pbss_desc->privacy) {
/* Static WEP enabled */
PRINTM(MINFO, "Disable 11n in WEP mode\n");
pbss_desc->disable_11n = MTRUE;
/* Reject the following cases: */
/*
* case 1: RSN IE w/o WEP OUI and WPA IE w/o WEP OUI
* case 2: RSN IE w/o WEP OUI and No WPA IE
* case 3: WPA IE w/o WEP OUI and No RSN IE
*/
if (((pbss_desc->prsn_ie) &&
((*(pbss_desc->prsn_ie)).ieee_hdr.element_id ==
RSN_IE)) || ((pbss_desc->pwpa_ie) &&
((*(pbss_desc->pwpa_ie)).vend_hdr.
element_id == WPA_IE))) {
if (!is_rsn_oui_present
(pmpriv->adapter, pbss_desc,
CIPHER_SUITE_WEP40) &&
!is_rsn_oui_present(pmpriv->adapter,
pbss_desc,
CIPHER_SUITE_WEP104) &&
!is_wpa_oui_present(pmpriv->adapter,
pbss_desc,
CIPHER_SUITE_WEP40) &&
!is_wpa_oui_present(pmpriv->adapter,
pbss_desc,
CIPHER_SUITE_WEP104))
index = -1;
}
LEAVE();
return index;
} else if (pmpriv->sec_info.wep_status == Wlan802_11WEPDisabled
&& pmpriv->sec_info.wpa_enabled
&& !pmpriv->sec_info.wpa2_enabled
&& ((pbss_desc->pwpa_ie) &&
((*(pbss_desc->pwpa_ie)).vend_hdr.element_id ==
WPA_IE))
&& !pmpriv->adhoc_aes_enabled
/*
* Privacy bit may NOT be set in some APs like
* LinkSys WRT54G && pbss_desc->privacy
*/
) {
/* WPA enabled */
PRINTM(MINFO,
"wlan_is_network_compatible() WPA: index=%d wpa_ie=%#x "
"rsn_ie=%#x WEP=%s WPA=%s WPA2=%s EncMode=%#x "
"privacy=%#x\n", index,
(pbss_desc->pwpa_ie) ? (*(pbss_desc->pwpa_ie)).
vend_hdr.element_id : 0,
(pbss_desc->prsn_ie) ? (*(pbss_desc->prsn_ie)).
ieee_hdr.element_id : 0,
(pmpriv->sec_info.wep_status ==
Wlan802_11WEPEnabled) ? "e" : "d",
(pmpriv->sec_info.wpa_enabled) ? "e" : "d",
(pmpriv->sec_info.wpa2_enabled) ? "e" : "d",
pmpriv->sec_info.encryption_mode,
pbss_desc->privacy);
if (((pmpriv->adapter->config_bands & BAND_GN ||
pmpriv->adapter->config_bands & BAND_AN) &&
pbss_desc->pht_cap)
&& (pmpriv->bss_mode == MLAN_BSS_MODE_INFRA)
&& !is_wpa_oui_present(pmpriv->adapter, pbss_desc,
CIPHER_SUITE_CCMP)) {
if (is_wpa_oui_present
(pmpriv->adapter, pbss_desc,
CIPHER_SUITE_TKIP)) {
PRINTM(MINFO,
"Disable 11n if AES is not supported by AP\n");
pbss_desc->disable_11n = MTRUE;
} else {
LEAVE();
return -1;
}
}
LEAVE();
return index;
} else if (pmpriv->sec_info.wep_status == Wlan802_11WEPDisabled
&& !pmpriv->sec_info.wpa_enabled
&& pmpriv->sec_info.wpa2_enabled
&& ((pbss_desc->prsn_ie) &&
((*(pbss_desc->prsn_ie)).ieee_hdr.element_id ==
RSN_IE))
&& !pmpriv->adhoc_aes_enabled
/*
* Privacy bit may NOT be set in some APs like
* LinkSys WRT54G && pbss_desc->privacy
*/
) {
/* WPA2 enabled */
PRINTM(MINFO,
"wlan_is_network_compatible() WPA2: index=%d wpa_ie=%#x "
"rsn_ie=%#x WEP=%s WPA=%s WPA2=%s EncMode=%#x "
"privacy=%#x\n", index,
(pbss_desc->pwpa_ie) ? (*(pbss_desc->pwpa_ie)).
vend_hdr.element_id : 0,
(pbss_desc->prsn_ie) ? (*(pbss_desc->prsn_ie)).
ieee_hdr.element_id : 0,
(pmpriv->sec_info.wep_status ==
Wlan802_11WEPEnabled) ? "e" : "d",
(pmpriv->sec_info.wpa_enabled) ? "e" : "d",
(pmpriv->sec_info.wpa2_enabled) ? "e" : "d",
pmpriv->sec_info.encryption_mode,
pbss_desc->privacy);
if (((pmpriv->adapter->config_bands & BAND_GN ||
pmpriv->adapter->config_bands & BAND_AN) &&
pbss_desc->pht_cap)
&& (pmpriv->bss_mode == MLAN_BSS_MODE_INFRA)
&& !is_rsn_oui_present(pmpriv->adapter, pbss_desc,
CIPHER_SUITE_CCMP)) {
if (is_rsn_oui_present
(pmpriv->adapter, pbss_desc,
CIPHER_SUITE_TKIP)) {
PRINTM(MINFO,
"Disable 11n if AES is not supported by AP\n");
pbss_desc->disable_11n = MTRUE;
} else {
LEAVE();
return -1;
}
}
LEAVE();
return index;
} else if (pmpriv->sec_info.wep_status == Wlan802_11WEPDisabled
&& !pmpriv->sec_info.wpa_enabled
&& !pmpriv->sec_info.wpa2_enabled
&& ((!pbss_desc->pwpa_ie) ||
((*(pbss_desc->pwpa_ie)).vend_hdr.element_id !=
WPA_IE))
&& ((!pbss_desc->prsn_ie) ||
((*(pbss_desc->prsn_ie)).ieee_hdr.element_id !=
RSN_IE))
&& pmpriv->adhoc_aes_enabled &&
pmpriv->sec_info.encryption_mode ==
MLAN_ENCRYPTION_MODE_NONE && pbss_desc->privacy) {
/* Ad-hoc AES enabled */
LEAVE();
return index;
} else if (pmpriv->sec_info.wep_status == Wlan802_11WEPDisabled
&& !pmpriv->sec_info.wpa_enabled
&& !pmpriv->sec_info.wpa2_enabled
&& ((!pbss_desc->pwpa_ie) ||
((*(pbss_desc->pwpa_ie)).vend_hdr.element_id !=
WPA_IE))
&& ((!pbss_desc->prsn_ie) ||
((*(pbss_desc->prsn_ie)).ieee_hdr.element_id !=
RSN_IE))
&& !pmpriv->adhoc_aes_enabled &&
pmpriv->sec_info.encryption_mode !=
MLAN_ENCRYPTION_MODE_NONE && pbss_desc->privacy) {
/* Dynamic WEP enabled */
pbss_desc->disable_11n = MTRUE;
PRINTM(MINFO,
"wlan_is_network_compatible() dynamic WEP: index=%d "
"wpa_ie=%#x rsn_ie=%#x EncMode=%#x privacy=%#x\n",
index,
(pbss_desc->pwpa_ie) ? (*(pbss_desc->pwpa_ie)).
vend_hdr.element_id : 0,
(pbss_desc->prsn_ie) ? (*(pbss_desc->prsn_ie)).
ieee_hdr.element_id : 0,
pmpriv->sec_info.encryption_mode,
pbss_desc->privacy);
LEAVE();
return index;
}
/* Security doesn't match */
PRINTM(MINFO,
"wlan_is_network_compatible() FAILED: index=%d wpa_ie=%#x "
"rsn_ie=%#x WEP=%s WPA=%s WPA2=%s EncMode=%#x privacy=%#x\n",
index,
(pbss_desc->pwpa_ie) ? (*(pbss_desc->pwpa_ie)).vend_hdr.
element_id : 0,
(pbss_desc->prsn_ie) ? (*(pbss_desc->prsn_ie)).ieee_hdr.
element_id : 0,
(pmpriv->sec_info.wep_status ==
Wlan802_11WEPEnabled) ? "e" : "d",
(pmpriv->sec_info.wpa_enabled) ? "e" : "d",
(pmpriv->sec_info.wpa2_enabled) ? "e" : "d",
pmpriv->sec_info.encryption_mode, pbss_desc->privacy);
LEAVE();
return -1;
}
/* Mode doesn't match */
LEAVE();
return -1;
}
/**
* @brief Internal function used to flush the scan list
*
* @param pmadapter A pointer to mlan_adapter structure
*
* @return MLAN_STATUS_SUCCESS
*/
mlan_status
wlan_flush_scan_table(IN pmlan_adapter pmadapter)
{
t_u8 i = 0;
ENTER();
PRINTM(MINFO, "Flushing scan table\n");
memset(pmadapter, pmadapter->pscan_table, 0,
(sizeof(BSSDescriptor_t) * MRVDRV_MAX_BSSID_LIST));
pmadapter->num_in_scan_table = 0;
memset(pmadapter, pmadapter->bcn_buf, 0, pmadapter->bcn_buf_size);
pmadapter->pbcn_buf_end = pmadapter->bcn_buf;
for (i = 0; i < pmadapter->num_in_chan_stats; i++)
pmadapter->pchan_stats[i].cca_scan_duration = 0;
pmadapter->idx_chan_stats = 0;
LEAVE();
return MLAN_STATUS_SUCCESS;
}
/**
* @brief Internal function used to start a scan based on an input config
*
* Use the input user scan configuration information when provided in
* order to send the appropriate scan commands to firmware to populate or
* update the internal driver scan table
*
* @param pmpriv A pointer to mlan_private structure
* @param pioctl_buf A pointer to MLAN IOCTL Request buffer
* @param puser_scan_in Pointer to the input configuration for the requested
* scan.
*
* @return MLAN_STATUS_SUCCESS or < 0 if error
*/
mlan_status
wlan_scan_networks(IN mlan_private *pmpriv,
IN t_void *pioctl_buf, IN wlan_user_scan_cfg *puser_scan_in)
{
mlan_status ret = MLAN_STATUS_SUCCESS;
mlan_adapter *pmadapter = pmpriv->adapter;
mlan_callbacks *pcb = (mlan_callbacks *)&pmadapter->callbacks;
cmd_ctrl_node *pcmd_node = MNULL;
pmlan_ioctl_req pioctl_req = (mlan_ioctl_req *)pioctl_buf;
wlan_scan_cmd_config_tlv *pscan_cfg_out = MNULL;
MrvlIEtypes_ChanListParamSet_t *pchan_list_out;
t_u32 buf_size;
ChanScanParamSet_t *pscan_chan_list;
t_u8 keep_previous_scan;
t_u8 filtered_scan;
t_u8 scan_current_chan_only;
t_u8 max_chan_per_scan;
t_u8 i;
ENTER();
ret = pcb->moal_malloc(pmadapter->pmoal_handle,
sizeof(wlan_scan_cmd_config_tlv), MLAN_MEM_DEF,
(t_u8 **)&pscan_cfg_out);
if (ret != MLAN_STATUS_SUCCESS || !pscan_cfg_out) {
PRINTM(MERROR, "Memory allocation for pscan_cfg_out failed!\n");
if (pioctl_req)
pioctl_req->status_code = MLAN_ERROR_NO_MEM;
LEAVE();
return MLAN_STATUS_FAILURE;
}
buf_size = sizeof(ChanScanParamSet_t) * WLAN_USER_SCAN_CHAN_MAX;
ret = pcb->moal_malloc(pmadapter->pmoal_handle, buf_size, MLAN_MEM_DEF,
(t_u8 **)&pscan_chan_list);
if (ret != MLAN_STATUS_SUCCESS || !pscan_chan_list) {
PRINTM(MERROR, "Failed to allocate scan_chan_list\n");
if (pscan_cfg_out)
pcb->moal_mfree(pmadapter->pmoal_handle,
(t_u8 *)pscan_cfg_out);
if (pioctl_req)
pioctl_req->status_code = MLAN_ERROR_NO_MEM;
LEAVE();
return MLAN_STATUS_FAILURE;
}
memset(pmadapter, pscan_chan_list, 0x00, buf_size);
memset(pmadapter, pscan_cfg_out, 0x00,
sizeof(wlan_scan_cmd_config_tlv));
keep_previous_scan = MFALSE;
ret = wlan_scan_setup_scan_config(pmpriv,
puser_scan_in,
&pscan_cfg_out->config,
&pchan_list_out,
pscan_chan_list,
&max_chan_per_scan,
&filtered_scan,
&scan_current_chan_only);
if (ret != MLAN_STATUS_SUCCESS) {
PRINTM(MERROR, "Failed to setup scan config\n");
if (pscan_cfg_out)
pcb->moal_mfree(pmadapter->pmoal_handle,
(t_u8 *)pscan_cfg_out);
if (pscan_chan_list)
pcb->moal_mfree(pmadapter->pmoal_handle,
(t_u8 *)pscan_chan_list);
if (pioctl_req)
pioctl_req->status_code = MLAN_ERROR_INVALID_PARAMETER;
LEAVE();
return MLAN_STATUS_FAILURE;
}
if (puser_scan_in)
keep_previous_scan = puser_scan_in->keep_previous_scan;
if (keep_previous_scan == MFALSE) {
memset(pmadapter, pmadapter->pscan_table, 0x00,
sizeof(BSSDescriptor_t) * MRVDRV_MAX_BSSID_LIST);
pmadapter->num_in_scan_table = 0;
pmadapter->pbcn_buf_end = pmadapter->bcn_buf;
for (i = 0; i < pmadapter->num_in_chan_stats; i++)
pmadapter->pchan_stats[i].cca_scan_duration = 0;
pmadapter->idx_chan_stats = 0;
}
ret = wlan_scan_channel_list(pmpriv,
pioctl_buf,
max_chan_per_scan,
filtered_scan,
&pscan_cfg_out->config,
pchan_list_out, pscan_chan_list);
/* Get scan command from scan_pending_q and put to cmd_pending_q */
if (ret == MLAN_STATUS_SUCCESS) {
if (pmadapter->ext_scan && pmadapter->ext_scan_enh &&
pmadapter->ext_scan_type == EXT_SCAN_ENHANCE) {
wlan_request_cmd_lock(pmadapter);
pmadapter->pscan_ioctl_req = pioctl_req;
pmadapter->scan_processing = MTRUE;
wlan_release_cmd_lock(pmadapter);
} else {
wlan_request_cmd_lock(pmadapter);
if (util_peek_list
(pmadapter->pmoal_handle,
&pmadapter->scan_pending_q, MNULL, MNULL)) {
pcmd_node =
(cmd_ctrl_node *)
util_dequeue_list(pmadapter->
pmoal_handle,
&pmadapter->
scan_pending_q, MNULL,
MNULL);
pmadapter->pscan_ioctl_req = pioctl_req;
pmadapter->scan_processing = MTRUE;
wlan_insert_cmd_to_pending_q(pmadapter,
pcmd_node, MTRUE);
}
wlan_release_cmd_lock(pmadapter);
}
}
if (pscan_cfg_out)
pcb->moal_mfree(pmadapter->pmoal_handle, (t_u8 *)pscan_cfg_out);
if (pscan_chan_list)
pcb->moal_mfree(pmadapter->pmoal_handle,
(t_u8 *)pscan_chan_list);
LEAVE();
return ret;
}
/**
* @brief Prepare a scan command to be sent to the firmware
*
* Use the wlan_scan_cmd_config sent to the command processing module in
* the wlan_prepare_cmd to configure a HostCmd_DS_802_11_SCAN command
* struct to send to firmware.
*
* The fixed fields specifying the BSS type and BSSID filters as well as a
* variable number/length of TLVs are sent in the command to firmware.
*
* @param pmpriv A pointer to mlan_private structure
* @param pcmd A pointer to HostCmd_DS_COMMAND structure to be sent to
* firmware with the HostCmd_DS_801_11_SCAN structure
* @param pdata_buf Void pointer cast of a wlan_scan_cmd_config struct used
* to set the fields/TLVs for the command sent to firmware
*
* @return MLAN_STATUS_SUCCESS
*/
mlan_status
wlan_cmd_802_11_scan(IN mlan_private *pmpriv,
IN HostCmd_DS_COMMAND *pcmd, IN t_void *pdata_buf)
{
HostCmd_DS_802_11_SCAN *pscan_cmd = &pcmd->params.scan;
wlan_scan_cmd_config *pscan_cfg;
ENTER();
pscan_cfg = (wlan_scan_cmd_config *)pdata_buf;
/* Set fixed field variables in scan command */
pscan_cmd->bss_mode = pscan_cfg->bss_mode;
memcpy(pmpriv->adapter, pscan_cmd->bssid, pscan_cfg->specific_bssid,
sizeof(pscan_cmd->bssid));
memcpy(pmpriv->adapter, pscan_cmd->tlv_buffer, pscan_cfg->tlv_buf,
pscan_cfg->tlv_buf_len);
pcmd->command = wlan_cpu_to_le16(HostCmd_CMD_802_11_SCAN);
/* Size is equal to the sizeof(fixed portions) + the TLV len + header */
pcmd->size = (t_u16)wlan_cpu_to_le16((t_u16)(sizeof(pscan_cmd->bss_mode)
+ sizeof(pscan_cmd->bssid)
+ pscan_cfg->tlv_buf_len
+ S_DS_GEN));
LEAVE();
return MLAN_STATUS_SUCCESS;
}
/**
* @brief Check if any hidden SSID found in passive scan channels
* and do specific SSID active scan for those channels
*
* @param pmpriv A pointer to mlan_private structure
* @param pioctl_buf A pointer to mlan_ioctl_req structure
*
* @return MTRUE/MFALSE
*/
t_bool
wlan_active_scan_req_for_passive_chan(IN mlan_private *pmpriv,
IN mlan_ioctl_req *pioctl_buf)
{
t_bool ret = MFALSE;
mlan_adapter *pmadapter = pmpriv->adapter;
t_bool scan_reqd = MFALSE;
t_bool chan_listed = MFALSE;
t_u8 id = 0;
t_u32 bss_idx, i;
t_u8 null_ssid[MLAN_MAX_SSID_LENGTH] = { 0 };
mlan_callbacks *pcb = (mlan_callbacks *)&pmpriv->adapter->callbacks;
wlan_user_scan_cfg *user_scan_cfg;
mlan_ds_scan *pscan = (mlan_ds_scan *)pioctl_buf->pbuf;
mlan_scan_req *pscan_req = MNULL;
wlan_user_scan_cfg *puser_scan_in = MNULL;
ENTER();
if (pscan->sub_command == MLAN_OID_SCAN_USER_CONFIG) {
puser_scan_in =
(wlan_user_scan_cfg *)pscan->param.user_scan.
scan_cfg_buf;
if (!puser_scan_in->ssid_filter)
goto done;
}
if (pmadapter->active_scan_triggered) {
pmadapter->active_scan_triggered = MFALSE;
goto done;
}
if ((pcb->
moal_malloc(pmadapter->pmoal_handle, sizeof(wlan_user_scan_cfg),
MLAN_MEM_DEF,
(t_u8 **)&user_scan_cfg) != MLAN_STATUS_SUCCESS) ||
!user_scan_cfg) {
PRINTM(MERROR, "Memory allocation for user_scan_cfg failed\n");
goto done;
}
memset(pmadapter, user_scan_cfg, 0, sizeof(wlan_user_scan_cfg));
for (bss_idx = 0; bss_idx < pmadapter->num_in_scan_table; bss_idx++) {
scan_reqd = MFALSE;
if (!memcmp
(pmadapter, pmadapter->pscan_table[bss_idx].ssid.ssid,
null_ssid,
pmadapter->pscan_table[bss_idx].ssid.ssid_len)) {
if (puser_scan_in &&
puser_scan_in->chan_list[0].chan_number) {
for (i = 0;
i < WLAN_USER_SCAN_CHAN_MAX &&
puser_scan_in->chan_list[i].chan_number;
i++) {
if (puser_scan_in->chan_list[i].
chan_number ==
pmadapter->pscan_table[bss_idx].
channel) {
if (puser_scan_in->chan_list[i].
scan_type ==
MLAN_SCAN_TYPE_PASSIVE)
scan_reqd = MTRUE;
break;
}
}
} else if (pmadapter->scan_type ==
MLAN_SCAN_TYPE_PASSIVE) {
scan_reqd = MTRUE;
} else {
if ((pmadapter->pscan_table[bss_idx].
bss_band & BAND_A) &&
wlan_11h_radar_detect_required(pmpriv,
pmadapter->
pscan_table
[bss_idx].
channel))
scan_reqd = MTRUE;
if (pmadapter->pscan_table[bss_idx].
bss_band & (BAND_B | BAND_G) &&
wlan_bg_scan_type_is_passive(pmpriv,
pmadapter->
pscan_table
[bss_idx].
channel))
scan_reqd = MTRUE;
}
if (scan_reqd) {
chan_listed = MFALSE;
for (i = 0; i < id; i++) {
if ((user_scan_cfg->chan_list[i].
chan_number ==
pmadapter->pscan_table[bss_idx].
channel)
&& (user_scan_cfg->chan_list[i].
radio_type & pmadapter->
pscan_table[bss_idx].
bss_band)) {
chan_listed = MTRUE;
break;
}
}
if (chan_listed == MTRUE)
continue;
user_scan_cfg->chan_list[id].chan_number =
pmadapter->pscan_table[bss_idx].channel;
if (pmadapter->pscan_table[bss_idx].
bss_band & (BAND_B | BAND_G))
user_scan_cfg->chan_list[id].
radio_type = BAND_2GHZ;
if (pmadapter->pscan_table[bss_idx].
bss_band & BAND_A)
user_scan_cfg->chan_list[id].
radio_type = BAND_5GHZ;
user_scan_cfg->chan_list[id].scan_type =
MLAN_SCAN_TYPE_ACTIVE;
id++;
}
}
}
if (id) {
pmadapter->active_scan_triggered = MTRUE;
if (pscan->sub_command == MLAN_OID_SCAN_USER_CONFIG) {
memcpy(pmpriv->adapter, user_scan_cfg->ssid_list,
puser_scan_in->ssid_list,
sizeof(user_scan_cfg->ssid_list));
} else {
pscan_req = &pscan->param.scan_req;
memcpy(pmpriv->adapter,
user_scan_cfg->ssid_list[0].ssid,
pscan_req->scan_ssid.ssid,
pscan_req->scan_ssid.ssid_len);
}
user_scan_cfg->keep_previous_scan = MTRUE;
if (MLAN_STATUS_SUCCESS != wlan_scan_networks(pmpriv,
pioctl_buf,
user_scan_cfg)) {
goto done;
}
ret = MTRUE;
}
if (user_scan_cfg)
pcb->moal_mfree(pmadapter->pmoal_handle, (t_u8 *)user_scan_cfg);
done:
LEAVE();
return ret;
}
/**
* @brief This function handles the command response of scan
*
* The response buffer for the scan command has the following
* memory layout:
*
* .-------------------------------------------------------------.
* | Header (4 * sizeof(t_u16)): Standard command response hdr |
* .-------------------------------------------------------------.
* | BufSize (t_u16) : sizeof the BSS Description data |
* .-------------------------------------------------------------.
* | NumOfSet (t_u8) : Number of BSS Descs returned |
* .-------------------------------------------------------------.
* | BSSDescription data (variable, size given in BufSize) |
* .-------------------------------------------------------------.
* | TLV data (variable, size calculated using Header->Size, |
* | BufSize and sizeof the fixed fields above) |
* .-------------------------------------------------------------.
*
* @param pmpriv A pointer to mlan_private structure
* @param resp A pointer to HostCmd_DS_COMMAND
* @param pioctl_buf A pointer to mlan_ioctl_req structure
*
* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
*/
mlan_status
wlan_ret_802_11_scan(IN mlan_private *pmpriv,
IN HostCmd_DS_COMMAND *resp, IN t_void *pioctl_buf)
{
mlan_status ret = MLAN_STATUS_SUCCESS;
mlan_adapter *pmadapter = pmpriv->adapter;
mlan_callbacks *pcb = MNULL;
cmd_ctrl_node *pcmd_node = MNULL;
HostCmd_DS_802_11_SCAN_RSP *pscan_rsp = MNULL;
BSSDescriptor_t *bss_new_entry = MNULL;
MrvlIEtypes_Data_t *ptlv;
MrvlIEtypes_TsfTimestamp_t *ptsf_tlv = MNULL;
MrvlIEtypes_ChannelStats_t *pchanstats_tlv = MNULL;
t_u8 *pbss_info;
t_u32 scan_resp_size;
t_u32 bytes_left;
t_u32 num_in_table;
t_u32 bss_idx;
t_u32 idx;
t_u32 tlv_buf_size;
t_u64 tsf_val;
chan_freq_power_t *cfp;
MrvlIEtypes_ChanBandListParamSet_t *pchan_band_tlv = MNULL;
ChanBandParamSet_t *pchan_band;
t_u8 band;
t_u8 is_bgscan_resp;
t_u32 age_ts_usec;
t_u8 null_ssid[MLAN_MAX_SSID_LENGTH] = { 0 };
t_u32 status_code = 0;
pmlan_ioctl_req pscan_ioctl_req = MNULL;
ENTER();
pcb = (pmlan_callbacks)&pmadapter->callbacks;
is_bgscan_resp = (resp->command == HostCmd_CMD_802_11_BG_SCAN_QUERY);
if (is_bgscan_resp)
pscan_rsp = &resp->params.bg_scan_query_resp.scan_resp;
else
pscan_rsp = &resp->params.scan_resp;
if (pscan_rsp->number_of_sets > MRVDRV_MAX_BSSID_LIST) {
PRINTM(MERROR,
"SCAN_RESP: Invalid number of AP returned (%d)!!\n",
pscan_rsp->number_of_sets);
status_code = MLAN_ERROR_CMD_SCAN_FAIL;
ret = MLAN_STATUS_FAILURE;
goto done;
}
bytes_left = wlan_le16_to_cpu(pscan_rsp->bss_descript_size);
PRINTM(MINFO, "SCAN_RESP: bss_descript_size %d\n", bytes_left);
scan_resp_size = resp->size;
PRINTM(MINFO, "SCAN_RESP: returned %d APs before parsing\n",
pscan_rsp->number_of_sets);
num_in_table = pmadapter->num_in_scan_table;
pbss_info = pscan_rsp->bss_desc_and_tlv_buffer;
/*
* The size of the TLV buffer is equal to the entire command response
* size (scan_resp_size) minus the fixed fields (sizeof()'s), the
* BSS Descriptions (bss_descript_size as bytesLef) and the command
* response header (S_DS_GEN)
*/
tlv_buf_size = scan_resp_size - (bytes_left
+ sizeof(pscan_rsp->bss_descript_size)
+ sizeof(pscan_rsp->number_of_sets)
+ S_DS_GEN);
if (is_bgscan_resp)
tlv_buf_size -=
sizeof(resp->params.bg_scan_query_resp.
report_condition);
ptlv = (MrvlIEtypes_Data_t *)(pscan_rsp->bss_desc_and_tlv_buffer +
bytes_left);
/*
* Search the TLV buffer space in the scan response
* for any valid TLVs
*/
wlan_ret_802_11_scan_get_tlv_ptrs(pmadapter,
ptlv,
tlv_buf_size,
TLV_TYPE_TSFTIMESTAMP,
(MrvlIEtypes_Data_t **)&ptsf_tlv);
/*
* Search the TLV buffer space in the scan response
* for any valid TLVs
*/
wlan_ret_802_11_scan_get_tlv_ptrs(pmadapter,
ptlv,
tlv_buf_size,
TLV_TYPE_CHANNELBANDLIST,
(MrvlIEtypes_Data_t **)
&pchan_band_tlv);
wlan_ret_802_11_scan_get_tlv_ptrs(pmadapter, ptlv, tlv_buf_size,
TLV_TYPE_CHANNEL_STATS,
(MrvlIEtypes_Data_t **)
&pchanstats_tlv);
if (pchanstats_tlv)
wlan_update_chan_statistics(pmpriv, pchanstats_tlv);
/*
* Process each scan response returned (pscan_rsp->number_of_sets).
* Save the information in the bss_new_entry and then insert into
* the driver scan table either as an update to an existing entry
* or as an addition at the end of the table
*/
ret = pcb->moal_malloc(pmadapter->pmoal_handle, sizeof(BSSDescriptor_t),
MLAN_MEM_DEF, (t_u8 **)&bss_new_entry);
if (ret != MLAN_STATUS_SUCCESS || !bss_new_entry) {
PRINTM(MERROR, "Memory allocation for bss_new_entry failed!\n");
status_code = MLAN_ERROR_NO_MEM;
ret = MLAN_STATUS_FAILURE;
goto done;
}
for (idx = 0; idx < pscan_rsp->number_of_sets && bytes_left; idx++) {
/* Zero out the bss_new_entry we are about to store info in */
memset(pmadapter, bss_new_entry, 0x00, sizeof(BSSDescriptor_t));
/* Process the data fields and IEs returned for this BSS */
if (wlan_interpret_bss_desc_with_ie(pmadapter,
bss_new_entry,
&pbss_info,
&bytes_left,
MFALSE) ==
MLAN_STATUS_SUCCESS) {
PRINTM(MINFO, "SCAN_RESP: BSSID = " MACSTR "\n",
MAC2STR(bss_new_entry->mac_address));
band = BAND_G;
if (pchan_band_tlv) {
pchan_band =
&pchan_band_tlv->chan_band_param[idx];
band = radio_type_to_band(pchan_band->bandcfg.
chanBand);
if (!bss_new_entry->channel)
bss_new_entry->channel =
pchan_band->chan_number;
}
/*
* Save the band designation for this entry
* for use in join
*/
bss_new_entry->bss_band = band;
cfp = wlan_find_cfp_by_band_and_channel(pmadapter,
(t_u8)
bss_new_entry->
bss_band,
(t_u16)
bss_new_entry->
channel);
if (cfp)
bss_new_entry->freq = cfp->freq;
else
bss_new_entry->freq = 0;
/* Skip entry if on blacklisted channel */
if (cfp && cfp->dynamic.blacklist) {
PRINTM(MINFO,
"SCAN_RESP: dropping entry on blacklist channel.\n");
continue;
}
/*
* Search the scan table for the same bssid
*/
for (bss_idx = 0; bss_idx < num_in_table; bss_idx++) {
if (!memcmp
(pmadapter, bss_new_entry->mac_address,
pmadapter->pscan_table[bss_idx].
mac_address,
sizeof(bss_new_entry->mac_address))) {
/*
* If the SSID matches as well, it is a
* duplicate of this entry. Keep the
* bss_idx set to this entry so we
* replace the old contents in the table
*/
if ((bss_new_entry->ssid.ssid_len ==
pmadapter->pscan_table[bss_idx].
ssid.ssid_len)
&&
(!memcmp
(pmadapter,
bss_new_entry->ssid.ssid,
pmadapter->pscan_table[bss_idx].
ssid.ssid,
bss_new_entry->ssid.ssid_len))) {
PRINTM(MINFO,
"SCAN_RESP: Duplicate of index: %d\n",
bss_idx);
break;
}
/*
* If the SSID is NULL for same BSSID
* keep the bss_idx set to this entry
* so we replace the old contents in
* the table
*/
if (!memcmp
(pmadapter,
pmadapter->pscan_table[bss_idx].
ssid.ssid, null_ssid,
pmadapter->pscan_table[bss_idx].
ssid.ssid_len)) {
PRINTM(MINFO,
"SCAN_RESP: Duplicate of index: %d\n",
bss_idx);
break;
}
}
}
/*
* If the bss_idx is equal to the number of entries
* in the table, the new entry was not a duplicate;
* append it to the scan table
*/
if (bss_idx == num_in_table) {
/*
* Range check the bss_idx, keep it limited
* to the last entry
*/
if (bss_idx == MRVDRV_MAX_BSSID_LIST)
bss_idx--;
else
num_in_table++;
}
/*
* Save the beacon/probe response returned for later
* application retrieval. Duplicate beacon/probe
* responses are updated if possible
*/
wlan_ret_802_11_scan_store_beacon(pmpriv,
bss_idx,
num_in_table,
bss_new_entry);
if (bss_new_entry->pbeacon_buf == MNULL) {
PRINTM(MCMND,
"No space for beacon, drop this entry\n");
num_in_table--;
continue;
}
/*
* If the TSF TLV was appended to the scan results, save
* this entry's TSF value in the networkTSF field. The
* networkTSF is the firmware's TSF value at the time
* the beacon or probe response was received.
*/
if (ptsf_tlv) {
memcpy(pmpriv->adapter, &tsf_val,
&ptsf_tlv->tsf_data[idx * TSF_DATA_SIZE],
sizeof(tsf_val));
tsf_val = wlan_le64_to_cpu(tsf_val);
memcpy(pmpriv->adapter,
&bss_new_entry->network_tsf, &tsf_val,
sizeof(bss_new_entry->network_tsf));
}
/* Copy the locally created bss_new_entry to the scan table */
memcpy(pmadapter, &pmadapter->pscan_table[bss_idx],
bss_new_entry,
sizeof(pmadapter->pscan_table[bss_idx]));
} else {
/* Error parsing/interpreting the scan response, skipped */
PRINTM(MERROR,
"SCAN_RESP: wlan_interpret_bss_desc_with_ie returned error\n");
}
}
PRINTM(MINFO, "SCAN_RESP: Scanned %2d APs, %d valid, %d total\n",
pscan_rsp->number_of_sets,
num_in_table - pmadapter->num_in_scan_table, num_in_table);
/* Update the total number of BSSIDs in the scan table */
pmadapter->num_in_scan_table = num_in_table;
/* Update the age_in_second */
pmadapter->callbacks.moal_get_system_time(pmadapter->pmoal_handle,
&pmadapter->age_in_secs,
&age_ts_usec);
if (is_bgscan_resp)
goto done;
wlan_request_cmd_lock(pmadapter);
if (!util_peek_list
(pmadapter->pmoal_handle, &pmadapter->scan_pending_q, MNULL,
MNULL)) {
wlan_release_cmd_lock(pmadapter);
if (pmadapter->pscan_ioctl_req) {
if (((mlan_ds_scan *)pmadapter->pscan_ioctl_req->pbuf)->
sub_command == MLAN_OID_SCAN_SPECIFIC_SSID ||
((mlan_ds_scan *)pmadapter->pscan_ioctl_req->pbuf)->
sub_command == MLAN_OID_SCAN_USER_CONFIG) {
if (wlan_active_scan_req_for_passive_chan
(pmpriv, pmadapter->pscan_ioctl_req)) {
goto done;
}
}
}
/*
* Process the resulting scan table:
* - Remove any bad ssids
* - Update our current BSS information from scan data
*/
wlan_scan_process_results(pmpriv);
wlan_request_cmd_lock(pmadapter);
pmadapter->scan_processing = MFALSE;
pscan_ioctl_req = pmadapter->pscan_ioctl_req;
pmadapter->pscan_ioctl_req = MNULL;
/* Need to indicate IOCTL complete */
if (pscan_ioctl_req) {
pscan_ioctl_req->status_code = MLAN_ERROR_NO_ERROR;
/* Indicate ioctl complete */
pcb->moal_ioctl_complete(pmadapter->pmoal_handle,
(pmlan_ioctl_req)
pscan_ioctl_req,
MLAN_STATUS_SUCCESS);
}
wlan_release_cmd_lock(pmadapter);
pmadapter->bgscan_reported = MFALSE;
wlan_recv_event(pmpriv, MLAN_EVENT_ID_DRV_SCAN_REPORT, MNULL);
} else {
/* If firmware not ready, do not issue any more scan commands */
if (pmadapter->hw_status != WlanHardwareStatusReady) {
wlan_release_cmd_lock(pmadapter);
status_code = MLAN_ERROR_FW_NOT_READY;
ret = MLAN_STATUS_FAILURE;
goto done;
} else {
/* Get scan command from scan_pending_q and put to cmd_pending_q */
pcmd_node =
(cmd_ctrl_node *)util_dequeue_list(pmadapter->
pmoal_handle,
&pmadapter->
scan_pending_q,
MNULL,
MNULL);
wlan_insert_cmd_to_pending_q(pmadapter, pcmd_node,
MTRUE);
wlan_release_cmd_lock(pmadapter);
}
}
done:
if (bss_new_entry)
pcb->moal_mfree(pmadapter->pmoal_handle, (t_u8 *)bss_new_entry);
if (ret) {
/* Flush all pending scan commands */
wlan_flush_scan_queue(pmadapter);
wlan_request_cmd_lock(pmadapter);
pmadapter->scan_processing = MFALSE;
pscan_ioctl_req = pmadapter->pscan_ioctl_req;
pmadapter->pscan_ioctl_req = MNULL;
if (pscan_ioctl_req) {
pscan_ioctl_req->status_code = status_code;
/* Indicate ioctl complete */
pcb->moal_ioctl_complete(pmadapter->pmoal_handle,
pscan_ioctl_req,
MLAN_STATUS_FAILURE);
}
wlan_release_cmd_lock(pmadapter);
}
LEAVE();
return ret;
}
/**
* @brief Prepare an extended scan command to be sent to the firmware
*
* Use the wlan_scan_cmd_config sent to the command processing module in
* the wlan_prepare_cmd to configure a HostCmd_DS_802_11_SCAN_EXT command
* struct to send to firmware.
*
* @param pmpriv A pointer to mlan_private structure
* @param pcmd A pointer to HostCmd_DS_COMMAND structure to be sent to
* firmware with the HostCmd_DS_802_11_SCAN_EXT structure
* @param pdata_buf Void pointer cast of a wlan_scan_cmd_config struct used
* to set the fields/TLVs for the command sent to firmware
*
* @return MLAN_STATUS_SUCCESS
*/
mlan_status
wlan_cmd_802_11_scan_ext(IN mlan_private *pmpriv,
IN HostCmd_DS_COMMAND *pcmd, IN t_void *pdata_buf)
{
HostCmd_DS_802_11_SCAN_EXT *pext_scan_cmd = &pcmd->params.ext_scan;
wlan_scan_cmd_config *pscan_cfg = MNULL;
ENTER();
pcmd->command = wlan_cpu_to_le16(HostCmd_CMD_802_11_SCAN_EXT);
if (pmpriv->adapter->ext_scan_enh == MTRUE) {
if (pdata_buf) {
if (pmpriv->adapter->ext_scan_type == EXT_SCAN_ENHANCE)
pext_scan_cmd->ext_scan_type = EXT_SCAN_ENHANCE;
else
pext_scan_cmd->ext_scan_type = EXT_SCAN_DEFAULT;
} else {
pcmd->size =
wlan_cpu_to_le16((t_u16)
(sizeof
(pext_scan_cmd->ext_scan_type)
+
(t_u16)(sizeof
(pext_scan_cmd->
reserved)) +
S_DS_GEN));
pext_scan_cmd->ext_scan_type = EXT_SCAN_CANCEL;
LEAVE();
return MLAN_STATUS_SUCCESS;
}
}
pscan_cfg = (wlan_scan_cmd_config *)pdata_buf;
memcpy(pmpriv->adapter, pext_scan_cmd->tlv_buffer,
pscan_cfg->tlv_buf, pscan_cfg->tlv_buf_len);
/* Size is equal to the sizeof(fixed portions) + the TLV len + header */
pcmd->size =
wlan_cpu_to_le16((t_u16)(sizeof(pext_scan_cmd->ext_scan_type)
+
(t_u16)sizeof(pext_scan_cmd->reserved)
+ pscan_cfg->tlv_buf_len + S_DS_GEN));
LEAVE();
return MLAN_STATUS_SUCCESS;
}
/**
* @brief This function handles the command response of extended scan
*
* @param pmpriv A pointer to mlan_private structure
* @param resp A pointer to HostCmd_DS_COMMAND
* @param pioctl_buf A pointer to mlan_ioctl_req structure
*
* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
*/
mlan_status
wlan_ret_802_11_scan_ext(IN mlan_private *pmpriv,
IN HostCmd_DS_COMMAND *resp, IN t_void *pioctl_buf)
{
HostCmd_DS_802_11_SCAN_EXT *pext_scan_cmd = &(resp->params.ext_scan);
MrvlIEtypesHeader_t *tlv = MNULL;
MrvlIEtypes_ChannelStats_t *tlv_chanstats = MNULL;
t_u16 tlv_buf_left = 0;
t_u16 tlv_type = 0;
t_u16 tlv_len = 0;
t_u32 ext_scan_type;
mlan_callbacks *pcb = (mlan_callbacks *)&pmpriv->adapter->callbacks;
pmlan_ioctl_req pioctl_req = (pmlan_ioctl_req)pioctl_buf;
mlan_adapter *pmadapter = pmpriv->adapter;
ENTER();
PRINTM(MINFO, "EXT scan returns successfully\n");
ext_scan_type = pext_scan_cmd->ext_scan_type;
if (ext_scan_type == EXT_SCAN_CANCEL) {
PRINTM(MCMND, "Cancle scan command completed!\n");
/* Need to indicate IOCTL complete */
if (pioctl_req != MNULL) {
pioctl_req->status_code = MLAN_STATUS_SUCCESS;
/* Indicate ioctl complete */
pcb->moal_ioctl_complete(pmadapter->pmoal_handle,
(pmlan_ioctl_req)pioctl_req,
MLAN_STATUS_SUCCESS);
}
LEAVE();
return MLAN_STATUS_SUCCESS;
} else if (ext_scan_type == EXT_SCAN_ENHANCE) {
/* Setup the timer after scan command response */
pcb->moal_start_timer(pmpriv->adapter->pmoal_handle,
pmpriv->adapter->pmlan_cmd_timer, MFALSE,
MRVDRV_TIMER_10S * 2);
pmpriv->adapter->cmd_timer_is_set = MTRUE;
LEAVE();
return MLAN_STATUS_SUCCESS;
}
tlv = (MrvlIEtypesHeader_t *)pext_scan_cmd->tlv_buffer;
tlv_buf_left =
resp->size - (sizeof(HostCmd_DS_802_11_SCAN_EXT) - 1 +
S_DS_GEN);
while (tlv_buf_left >= sizeof(MrvlIEtypesHeader_t)) {
tlv_type = wlan_le16_to_cpu(tlv->type);
tlv_len = wlan_le16_to_cpu(tlv->len);
if (tlv_buf_left < (tlv_len + sizeof(MrvlIEtypesHeader_t))) {
PRINTM(MERROR, "Error processing scan gap TLV\n");
break;
}
switch (tlv_type) {
case TLV_TYPE_CHANNEL_STATS:
tlv_chanstats = (MrvlIEtypes_ChannelStats_t *)tlv;
wlan_update_chan_statistics(pmpriv, tlv_chanstats);
break;
default:
break;
}
tlv_buf_left -= tlv_len + sizeof(MrvlIEtypesHeader_t);
tlv = (MrvlIEtypesHeader_t *)((t_u8 *)tlv + tlv_len +
sizeof(MrvlIEtypesHeader_t));
}
LEAVE();
return MLAN_STATUS_SUCCESS;
}
/**
* @brief This function parse and store the extended scan results
*
* @param pmpriv A pointer to mlan_private structure
* @param number_of_sets Number of BSS
* @param pscan_resp A pointer to scan response buffer
* @param scan_resp_size Size of scan response buffer
*
* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
*/
static mlan_status
wlan_parse_ext_scan_result(IN mlan_private *pmpriv,
IN t_u8 number_of_sets,
IN t_u8 *pscan_resp, IN t_u16 scan_resp_size)
{
mlan_status ret = MLAN_STATUS_SUCCESS;
mlan_adapter *pmadapter = pmpriv->adapter;
mlan_callbacks *pcb = MNULL;
BSSDescriptor_t *bss_new_entry = MNULL;
t_u8 *pbss_info;
t_u32 bytes_left;
t_u32 bytes_left_for_tlv;
t_u32 num_in_table;
t_u32 bss_idx;
t_u32 idx;
t_u64 tsf_val;
chan_freq_power_t *cfp;
t_u16 tlv_type, tlv_len;
MrvlIEtypes_Data_t *ptlv = MNULL;
MrvlIEtypes_Bss_Scan_Rsp_t *pscan_rsp_tlv = MNULL;
MrvlIEtypes_Bss_Scan_Info_t *pscan_info_tlv = MNULL;
t_u8 band;
t_u32 age_ts_usec;
t_u8 null_ssid[MLAN_MAX_SSID_LENGTH] = { 0 };
ENTER();
pcb = (pmlan_callbacks)&pmadapter->callbacks;
if (number_of_sets > MRVDRV_MAX_BSSID_LIST) {
PRINTM(MERROR,
"EXT_SCAN: Invalid number of AP returned (%d)!!\n",
number_of_sets);
ret = MLAN_STATUS_FAILURE;
goto done;
}
bytes_left = scan_resp_size;
PRINTM(MINFO, "EXT_SCAN: bss_descript_size %d\n", scan_resp_size);
PRINTM(MINFO, "EXT_SCAN: returned %d APs before parsing\n",
number_of_sets);
num_in_table = pmadapter->num_in_scan_table;
ptlv = (MrvlIEtypes_Data_t *)pscan_resp;
/*
* Process each scan response returned number_of_sets. Save
* the information in the bss_new_entry and then insert into the
* driver scan table either as an update to an existing entry
* or as an addition at the end of the table
*/
ret = pcb->moal_malloc(pmadapter->pmoal_handle, sizeof(BSSDescriptor_t),
MLAN_MEM_DEF, (t_u8 **)&bss_new_entry);
if (ret != MLAN_STATUS_SUCCESS || !bss_new_entry) {
PRINTM(MERROR, "Memory allocation for bss_new_entry failed!\n");
ret = MLAN_STATUS_FAILURE;
goto done;
}
for (idx = 0; idx < number_of_sets && bytes_left >
sizeof(MrvlIEtypesHeader_t); idx++) {
tlv_type = wlan_le16_to_cpu(ptlv->header.type);
tlv_len = wlan_le16_to_cpu(ptlv->header.len);
if (bytes_left < sizeof(MrvlIEtypesHeader_t) + tlv_len) {
PRINTM(MERROR,
"EXT_SCAN: Error bytes left < TLV length\n");
break;
}
pscan_rsp_tlv = MNULL;
pscan_info_tlv = MNULL;
bytes_left_for_tlv = bytes_left;
/*
* BSS response TLV with beacon or probe response buffer
* at the initial position of each descriptor
*/
if (tlv_type == TLV_TYPE_BSS_SCAN_RSP) {
pbss_info = (t_u8 *)ptlv;
pscan_rsp_tlv = (MrvlIEtypes_Bss_Scan_Rsp_t *)ptlv;
ptlv = (MrvlIEtypes_Data_t *)(ptlv->data + tlv_len);
bytes_left_for_tlv -=
(tlv_len + sizeof(MrvlIEtypesHeader_t));
} else
break;
/* Process variable TLV */
while (bytes_left_for_tlv >= sizeof(MrvlIEtypesHeader_t) &&
wlan_le16_to_cpu(ptlv->header.type) !=
TLV_TYPE_BSS_SCAN_RSP) {
tlv_type = wlan_le16_to_cpu(ptlv->header.type);
tlv_len = wlan_le16_to_cpu(ptlv->header.len);
if (bytes_left_for_tlv <
sizeof(MrvlIEtypesHeader_t) + tlv_len) {
PRINTM(MERROR,
"EXT_SCAN: Error in processing TLV, "
"bytes left < TLV length\n");
pscan_rsp_tlv = MNULL;
bytes_left_for_tlv = 0;
continue;
}
switch (tlv_type) {
case TLV_TYPE_BSS_SCAN_INFO:
pscan_info_tlv =
(MrvlIEtypes_Bss_Scan_Info_t *)ptlv;
if (tlv_len !=
sizeof(MrvlIEtypes_Bss_Scan_Info_t) -
sizeof(MrvlIEtypesHeader_t)) {
bytes_left_for_tlv = 0;
continue;
}
break;
default:
break;
}
ptlv = (MrvlIEtypes_Data_t *)(ptlv->data + tlv_len);
bytes_left -= (tlv_len + sizeof(MrvlIEtypesHeader_t));
bytes_left_for_tlv -=
(tlv_len + sizeof(MrvlIEtypesHeader_t));
}
/* No BSS response TLV */
if (pscan_rsp_tlv == MNULL)
break;
/*
* Advance pointer to the beacon buffer length and
* update the bytes count so that the function
* wlan_interpret_bss_desc_with_ie() can handle the
* scan buffer withut any change
*/
pbss_info += sizeof(t_u16);
bytes_left -= sizeof(t_u16);
/* Zero out the bss_new_entry we are about to store info in */
memset(pmadapter, bss_new_entry, 0x00, sizeof(BSSDescriptor_t));
/* Process the data fields and IEs returned for this BSS */
if (wlan_interpret_bss_desc_with_ie(pmadapter,
bss_new_entry,
&pbss_info,
&bytes_left,
MTRUE) ==
MLAN_STATUS_SUCCESS) {
PRINTM(MINFO, "EXT_SCAN: BSSID = " MACSTR "\n",
MAC2STR(bss_new_entry->mac_address));
band = BAND_G;
/*
* If the BSS info TLV was appended to the scan results,
* save this entry's TSF value in the networkTSF field.
* The networkTSF is the firmware's TSF value at the
* time the beacon or probe response was received.
*/
if (pscan_info_tlv) {
/* RSSI is 2 byte long */
bss_new_entry->rssi =
-(t_s32)(wlan_le16_to_cpu
(pscan_info_tlv->rssi));
PRINTM(MINFO, "EXT_SCAN: RSSI=%d\n",
bss_new_entry->rssi);
memcpy(pmpriv->adapter, &tsf_val,
&pscan_info_tlv->tsf, sizeof(tsf_val));
tsf_val = wlan_le64_to_cpu(tsf_val);
memcpy(pmpriv->adapter,
&bss_new_entry->network_tsf, &tsf_val,
sizeof(bss_new_entry->network_tsf));
band = radio_type_to_band(pscan_info_tlv->
bandcfg.chanBand);
}
/* Save the band designation for this entry for use in join */
bss_new_entry->bss_band = band;
cfp = wlan_find_cfp_by_band_and_channel(pmadapter,
(t_u8)
bss_new_entry->
bss_band,
(t_u16)
bss_new_entry->
channel);
if (cfp)
bss_new_entry->freq = cfp->freq;
else
bss_new_entry->freq = 0;
/* Skip entry if on blacklisted channel */
if (cfp && cfp->dynamic.blacklist) {
PRINTM(MINFO,
"EXT_SCAN: dropping entry on blacklist channel.\n");
continue;
}
/*
* Search the scan table for the same bssid
*/
for (bss_idx = 0; bss_idx < num_in_table; bss_idx++) {
if (!memcmp
(pmadapter, bss_new_entry->mac_address,
pmadapter->pscan_table[bss_idx].
mac_address,
sizeof(bss_new_entry->mac_address))) {
/*
* If the SSID matches as well, it is a
* duplicate of this entry. Keep the
* bss_idx set to this entry so we
* replace the old contents in the table
*/
if ((bss_new_entry->ssid.ssid_len ==
pmadapter->pscan_table[bss_idx].
ssid.ssid_len)
&&
(!memcmp
(pmadapter,
bss_new_entry->ssid.ssid,
pmadapter->pscan_table[bss_idx].
ssid.ssid,
bss_new_entry->ssid.ssid_len))) {
PRINTM(MINFO,
"EXT_SCAN: Duplicate of index: %d\n",
bss_idx);
break;
}
/*
* If the SSID is NULL for same BSSID
* keep the bss_idx set to this entry
* so we replace the old contents in
* the table
*/
if (!memcmp
(pmadapter,
pmadapter->pscan_table[bss_idx].
ssid.ssid, null_ssid,
pmadapter->pscan_table[bss_idx].
ssid.ssid_len)) {
PRINTM(MINFO,
"EXT_SCAN: Duplicate of index: %d\n",
bss_idx);
break;
}
}
}
/*
* If the bss_idx is equal to the number of entries
* in the table, the new entry was not a duplicate;
* append it to the scan table
*/
if (bss_idx == num_in_table) {
/* Range check the bss_idx, keep it limited to the last entry */
if (bss_idx == MRVDRV_MAX_BSSID_LIST)
bss_idx--;
else
num_in_table++;
}
/*
* Save the beacon/probe response returned for later
* application retrieval. Duplicate beacon/probe
* responses are updated if possible
*/
wlan_ret_802_11_scan_store_beacon(pmpriv,
bss_idx,
num_in_table,
bss_new_entry);
if (bss_new_entry->pbeacon_buf == MNULL) {
PRINTM(MCMND,
"No space for beacon, drop this entry\n");
num_in_table--;
continue;
}
/* Copy the locally created bss_new_entry to the scan table */
memcpy(pmadapter, &pmadapter->pscan_table[bss_idx],
bss_new_entry,
sizeof(pmadapter->pscan_table[bss_idx]));
} else {
/* Error parsing/interpreting the scan response, skipped */
PRINTM(MERROR,
"EXT_SCAN: wlan_interpret_bss_desc_with_ie returned error\n");
}
}
PRINTM(MINFO, "EXT_SCAN: Scanned %2d APs, %d valid, %d total\n",
number_of_sets, num_in_table - pmadapter->num_in_scan_table,
num_in_table);
/* Update the total number of BSSIDs in the scan table */
pmadapter->num_in_scan_table = num_in_table;
/* Update the age_in_second */
pmadapter->callbacks.moal_get_system_time(pmadapter->pmoal_handle,
&pmadapter->age_in_secs,
&age_ts_usec);
done:
if (bss_new_entry)
pcb->moal_mfree(pmadapter->pmoal_handle, (t_u8 *)bss_new_entry);
LEAVE();
return ret;
}
/**
* @brief This function handles the event extended scan report
*
* @param pmpriv A pointer to mlan_private structure
* @param pmbuf A pointer to mlan_buffer
*
* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
*/
mlan_status
wlan_handle_event_ext_scan_report(IN mlan_private *pmpriv,
IN mlan_buffer *pmbuf)
{
mlan_adapter *pmadapter = pmpriv->adapter;
mlan_callbacks *pcb = &pmadapter->callbacks;
mlan_ioctl_req *pioctl_req = MNULL;
cmd_ctrl_node *pcmd_node = MNULL;
mlan_status ret = MLAN_STATUS_SUCCESS;
mlan_event_scan_result *pevent_scan = (pmlan_event_scan_result)
(pmbuf->pbuf + pmbuf->data_offset);
t_u8 *ptlv = (pmbuf->pbuf + pmbuf->data_offset
+ sizeof(mlan_event_scan_result));
t_u16 tlv_buf_left = wlan_le16_to_cpu(pevent_scan->buf_size);
DBG_HEXDUMP(MCMD_D, "EVENT EXT_SCAN", pmbuf->pbuf +
pmbuf->data_offset, pmbuf->data_len);
wlan_parse_ext_scan_result(pmpriv, pevent_scan->num_of_set,
ptlv, tlv_buf_left);
if (!pevent_scan->more_event
&& (pmadapter->ext_scan_type != EXT_SCAN_ENHANCE)
) {
wlan_request_cmd_lock(pmadapter);
if (!util_peek_list(pmadapter->pmoal_handle,
&pmadapter->scan_pending_q, MNULL, MNULL)) {
wlan_release_cmd_lock(pmadapter);
if (pmadapter->pscan_ioctl_req) {
if (((mlan_ds_scan *)pmadapter->
pscan_ioctl_req->pbuf)->sub_command ==
MLAN_OID_SCAN_SPECIFIC_SSID ||
((mlan_ds_scan *)pmadapter->
pscan_ioctl_req->pbuf)->sub_command ==
MLAN_OID_SCAN_USER_CONFIG) {
if (wlan_active_scan_req_for_passive_chan(pmpriv, pmadapter->pscan_ioctl_req)) {
LEAVE();
return ret;
}
}
}
/*
* Process the resulting scan table:
* - Remove any bad ssids
* - Update our current BSS information from scan data
*/
wlan_scan_process_results(pmpriv);
wlan_request_cmd_lock(pmadapter);
pmadapter->scan_processing = MFALSE;
pioctl_req = pmadapter->pscan_ioctl_req;
pmadapter->pscan_ioctl_req = MNULL;
/* Need to indicate IOCTL complete */
if (pioctl_req != MNULL) {
pioctl_req->status_code = MLAN_ERROR_NO_ERROR;
/* Indicate ioctl complete */
pcb->moal_ioctl_complete(pmadapter->
pmoal_handle,
(pmlan_ioctl_req)
pioctl_req,
MLAN_STATUS_SUCCESS);
}
wlan_release_cmd_lock(pmadapter);
pmadapter->bgscan_reported = MFALSE;
wlan_recv_event(pmpriv, MLAN_EVENT_ID_DRV_SCAN_REPORT,
MNULL);
} else {
/* If firmware not ready, do not issue any more scan commands */
if (pmadapter->hw_status != WlanHardwareStatusReady) {
wlan_release_cmd_lock(pmadapter);
/* Flush all pending scan commands */
wlan_flush_scan_queue(pmadapter);
wlan_request_cmd_lock(pmadapter);
pmadapter->scan_processing = MFALSE;
pioctl_req = pmadapter->pscan_ioctl_req;
pmadapter->pscan_ioctl_req = MNULL;
/* Indicate IOCTL complete */
if (pioctl_req != MNULL) {
pioctl_req->status_code =
MLAN_ERROR_FW_NOT_READY;
/* Indicate ioctl complete */
pcb->moal_ioctl_complete(pmadapter->
pmoal_handle,
(pmlan_ioctl_req)
pioctl_req,
MLAN_STATUS_FAILURE);
}
wlan_release_cmd_lock(pmadapter);
} else {
/* Get scan command from scan_pending_q and put to cmd_pending_q */
pcmd_node =
(cmd_ctrl_node *)
util_dequeue_list(pmadapter->
pmoal_handle,
&pmadapter->
scan_pending_q, MNULL,
MNULL);
wlan_insert_cmd_to_pending_q(pmadapter,
pcmd_node, MTRUE);
wlan_release_cmd_lock(pmadapter);
}
}
}
LEAVE();
return ret;
}
/**
* @brief This function handles the event extended scan status
*
* @param pmpriv A pointer to mlan_private structure
* @param pmbuf A pointer to mlan_buffer
*
* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
*/
mlan_status
wlan_handle_event_ext_scan_status(IN mlan_private *pmpriv,
IN mlan_buffer *pmbuf)
{
mlan_adapter *pmadapter = pmpriv->adapter;
mlan_status ret = MLAN_STATUS_SUCCESS;
mlan_event_scan_status *scan_event;
mlan_ioctl_req *pioctl_req;
mlan_callbacks *pcb = (mlan_callbacks *)&pmadapter->callbacks;
t_u16 tlv_buf_left, tlv_len, tlv_type;
MrvlIEtypesHeader_t *tlv;
MrvlIEtypes_ChannelStats_t *tlv_chan_stats;
t_u8 status;
ENTER();
if (pmbuf->data_len < sizeof(mlan_event_scan_status)) {
PRINTM(MERROR, "Wrong ext scan status event data length\n");
ret = MLAN_STATUS_FAILURE;
goto done;
}
scan_event =
(pmlan_event_scan_status) (pmbuf->pbuf + pmbuf->data_offset);
DBG_HEXDUMP(MCMD_D, "EVENT: Ext_Scan_Status", scan_event,
pmbuf->data_len);
status = scan_event->scan_status;
PRINTM(MEVENT, "ext_scan_status: status %d (scan %s), buf_len %d\n",
status, status ? "cancelled" : "success", scan_event->buf_len);
tlv = (MrvlIEtypesHeader_t *)scan_event->event_buf;
tlv_buf_left = pmbuf->data_len - sizeof(mlan_event_scan_status);
while (tlv_buf_left >= sizeof(MrvlIEtypesHeader_t)) {
tlv_type = wlan_le16_to_cpu(tlv->type);
tlv_len = wlan_le16_to_cpu(tlv->len);
if (tlv_buf_left < (tlv_len + sizeof(MrvlIEtypesHeader_t))) {
PRINTM(MERROR,
"Error process scan gap tlv: length %d type 0x%x\n",
tlv_len, tlv_type);
ret = MLAN_STATUS_FAILURE;
goto done;
}
switch (tlv_type) {
case TLV_TYPE_CHANNEL_STATS:
tlv_chan_stats = (MrvlIEtypes_ChannelStats_t *)tlv;
wlan_update_chan_statistics(pmpriv, tlv_chan_stats);
break;
default:
break;
}
tlv_buf_left -= tlv_len + sizeof(MrvlIEtypesHeader_t);
tlv = (MrvlIEtypesHeader_t *)((t_u8 *)(tlv + tlv_len +
sizeof
(MrvlIEtypesHeader_t)));
}
done:
/* Now we got response from FW, cancel the command timer */
if (!pmadapter->curr_cmd && pmadapter->cmd_timer_is_set) {
/* Cancel command timeout timer */
pcb->moal_stop_timer(pmadapter->pmoal_handle,
pmadapter->pmlan_cmd_timer);
/* Cancel command timeout timer */
pmadapter->cmd_timer_is_set = MFALSE;
}
if (pmadapter->pscan_ioctl_req) {
if (((mlan_ds_scan *)pmadapter->pscan_ioctl_req->pbuf)->
sub_command == MLAN_OID_SCAN_SPECIFIC_SSID ||
((mlan_ds_scan *)pmadapter->pscan_ioctl_req->pbuf)->
sub_command == MLAN_OID_SCAN_USER_CONFIG) {
if (wlan_active_scan_req_for_passive_chan
(pmpriv, pmadapter->pscan_ioctl_req)) {
LEAVE();
return ret;
}
}
}
/*
* Process the resulting scan table:
* - Remove any bad ssids
* - Update our current BSS information from scan data
*/
wlan_scan_process_results(pmpriv);
/** Complete scan ioctl */
wlan_request_cmd_lock(pmadapter);
pmadapter->scan_processing = MFALSE;
pmadapter->ext_scan_type = EXT_SCAN_DEFAULT;
pioctl_req = pmadapter->pscan_ioctl_req;
pmadapter->pscan_ioctl_req = MNULL;
/* Need to indicate IOCTL complete */
if (pioctl_req != MNULL) {
pioctl_req->status_code = MLAN_ERROR_NO_ERROR;
/* Indicate ioctl complete */
pcb->moal_ioctl_complete(pmadapter->pmoal_handle,
pioctl_req, MLAN_STATUS_SUCCESS);
}
wlan_release_cmd_lock(pmadapter);
pmadapter->bgscan_reported = MFALSE;
wlan_recv_event(pmpriv, MLAN_EVENT_ID_DRV_SCAN_REPORT, MNULL);
LEAVE();
return ret;
}
/**
* @brief This function prepares command of bg_scan_query.
*
* @param pmpriv A pointer to mlan_private structure
* @param pcmd A pointer to HostCmd_DS_COMMAND structure
* @param pdata_buf Void pointer cast of a wlan_scan_cmd_config struct used
* to set the fields/TLVs for the command sent to firmware
*
* @return MLAN_STATUS_SUCCESS
*/
mlan_status
wlan_cmd_802_11_bg_scan_query(IN mlan_private *pmpriv,
IN HostCmd_DS_COMMAND *pcmd, IN t_void *pdata_buf)
{
HostCmd_DS_802_11_BG_SCAN_QUERY *bg_query = &pcmd->params.bg_scan_query;
ENTER();
pcmd->command = wlan_cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_QUERY);
pcmd->size =
wlan_cpu_to_le16(sizeof(HostCmd_DS_802_11_BG_SCAN_QUERY) +
S_DS_GEN);
bg_query->flush = MTRUE;
LEAVE();
return MLAN_STATUS_SUCCESS;
}
/**
* @brief Create a channel list for the driver to scan based on region info
*
* Use the driver region/band information to construct a comprehensive list
* of channels to scan. This routine is used for any scan that is not
* provided a specific channel list to scan.
*
* @param pmpriv A pointer to mlan_private structure
* @param pbg_scan_in pointer to scan configuration parameters
* @param tlv_chan_list A pointer to structure MrvlIEtypes_ChanListParamSet_t
*
* @return channel number
*/
static t_u8
wlan_bgscan_create_channel_list(IN mlan_private *pmpriv,
IN const wlan_bgscan_cfg *pbg_scan_in,
MrvlIEtypes_ChanListParamSet_t *tlv_chan_list)
{
mlan_adapter *pmadapter = pmpriv->adapter;
region_chan_t *pscan_region;
chan_freq_power_t *cfp;
t_u32 region_idx;
t_u32 chan_idx = 0;
t_u32 next_chan;
t_u8 scan_type;
t_u8 radio_type;
ENTER();
for (region_idx = 0;
region_idx < NELEMENTS(pmadapter->region_channel); region_idx++) {
if (wlan_11d_is_enabled(pmpriv) &&
pmpriv->media_connected != MTRUE) {
/* Scan all the supported chan for the first scan */
if (!pmadapter->universal_channel[region_idx].valid)
continue;
pscan_region =
&pmadapter->universal_channel[region_idx];
} else {
if (!pmadapter->region_channel[region_idx].valid)
continue;
pscan_region = &pmadapter->region_channel[region_idx];
}
if (pbg_scan_in && !pbg_scan_in->chan_list[0].chan_number &&
pbg_scan_in->chan_list[0].radio_type & BAND_SPECIFIED) {
radio_type =
pbg_scan_in->chan_list[0].
radio_type & ~BAND_SPECIFIED;
if (!radio_type && (pscan_region->band != BAND_B) &&
(pscan_region->band != BAND_G))
continue;
if (radio_type && (pscan_region->band != BAND_A))
continue;
}
if (!wlan_is_band_compatible
(pmpriv->config_bands | pmadapter->adhoc_start_band,
pscan_region->band))
continue;
for (next_chan = 0;
next_chan < pscan_region->num_cfp;
next_chan++, chan_idx++) {
if (chan_idx >= WLAN_BG_SCAN_CHAN_MAX)
break;
/*
* Set the default scan type to ACTIVE SCAN type, will
* later be changed to passive on a per channel basis
* if restricted by regulatory requirements (11d or 11h)
*/
scan_type = MLAN_SCAN_TYPE_ACTIVE;
cfp = pscan_region->pcfp + next_chan;
switch (pscan_region->band) {
case BAND_A:
tlv_chan_list->chan_scan_param[chan_idx].
bandcfg.chanBand = BAND_5GHZ;
/* Passive scan on DFS channels */
if (wlan_11h_radar_detect_required
(pmpriv, (t_u8)cfp->channel))
scan_type = MLAN_SCAN_TYPE_PASSIVE;
break;
case BAND_B:
case BAND_G:
if (wlan_bg_scan_type_is_passive
(pmpriv, (t_u8)cfp->channel))
scan_type = MLAN_SCAN_TYPE_PASSIVE;
tlv_chan_list->chan_scan_param[chan_idx].
bandcfg.chanBand = BAND_2GHZ;
break;
default:
tlv_chan_list->chan_scan_param[chan_idx].
bandcfg.chanBand = BAND_2GHZ;
break;
}
if (pbg_scan_in && pbg_scan_in->chan_list[0].scan_time) {
tlv_chan_list->chan_scan_param[chan_idx].
max_scan_time =
wlan_cpu_to_le16((t_u16)pbg_scan_in->
chan_list[0].
scan_time);
tlv_chan_list->chan_scan_param[chan_idx].
min_scan_time =
wlan_cpu_to_le16((t_u16)pbg_scan_in->
chan_list[0].
scan_time);
} else if (scan_type == MLAN_SCAN_TYPE_PASSIVE) {
tlv_chan_list->chan_scan_param[chan_idx].
max_scan_time =
wlan_cpu_to_le16(pmadapter->
passive_scan_time);
tlv_chan_list->chan_scan_param[chan_idx].
min_scan_time =
wlan_cpu_to_le16(pmadapter->
passive_scan_time);
} else {
tlv_chan_list->chan_scan_param[chan_idx].
max_scan_time =
wlan_cpu_to_le16(pmadapter->
specific_scan_time);
tlv_chan_list->chan_scan_param[chan_idx].
min_scan_time =
wlan_cpu_to_le16(pmadapter->
specific_scan_time);
}
if (scan_type == MLAN_SCAN_TYPE_PASSIVE) {
tlv_chan_list->chan_scan_param[chan_idx].
chan_scan_mode.passive_scan = MTRUE;
} else {
tlv_chan_list->chan_scan_param[chan_idx].
chan_scan_mode.passive_scan = MFALSE;
}
tlv_chan_list->chan_scan_param[chan_idx].chan_number =
(t_u8)cfp->channel;
tlv_chan_list->chan_scan_param[chan_idx].chan_scan_mode.
disable_chan_filt = MTRUE;
}
}
LEAVE();
return chan_idx;
}
/**
* @brief This function prepares command of bg_scan_config
*
* @param pmpriv A pointer to mlan_private structure
* @param pcmd A pointer to HostCmd_DS_COMMAND structure
* @param pdata_buf Void pointer cast of a wlan_scan_cmd_config struct used
* to set the fields/TLVs for the command sent to firmware
*
* @return MLAN_STATUS_SUCCESS
*/
mlan_status
wlan_cmd_bgscan_config(IN mlan_private *pmpriv,
IN HostCmd_DS_COMMAND *pcmd, IN t_void *pdata_buf)
{
mlan_adapter *pmadapter = pmpriv->adapter;
HostCmd_DS_802_11_BG_SCAN_CONFIG *bg_scan =
&pcmd->params.bg_scan_config;
wlan_bgscan_cfg *bg_scan_in = (wlan_bgscan_cfg *)pdata_buf;
t_u16 cmd_size = 0;
MrvlIEtypes_NumProbes_t *pnum_probes_tlv = MNULL;
MrvlIEtypes_BeaconLowRssiThreshold_t *rssi_tlv = MNULL;
MrvlIEtypes_BeaconLowSnrThreshold_t *snr_tlv = MNULL;
MrvlIEtypes_WildCardSsIdParamSet_t *pwildcard_ssid_tlv = MNULL;
MrvlIEtypes_ChanListParamSet_t *tlv_chan_list = MNULL;
MrvlIEtypes_StartLater_t *tlv_start_later = MNULL;
MrvlIEtypes_RepeatCount_t *tlv_repeat = MNULL;
t_u8 *tlv = MNULL;
t_u16 num_probes = 0;
t_u32 ssid_idx;
t_u32 ssid_len = 0;
t_u32 chan_idx;
t_u32 chan_num;
t_u8 radio_type;
t_u16 scan_dur;
t_u8 scan_type;
ENTER();
pcmd->command = wlan_cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_CONFIG);
bg_scan->action = wlan_cpu_to_le16(bg_scan_in->action);
bg_scan->enable = bg_scan_in->enable;
bg_scan->bss_type = bg_scan_in->bss_type;
cmd_size = sizeof(HostCmd_DS_802_11_BG_SCAN_CONFIG) + S_DS_GEN;
if (bg_scan_in->scan_interval)
bg_scan->scan_interval =
wlan_cpu_to_le32(bg_scan_in->scan_interval);
else
bg_scan->scan_interval =
wlan_cpu_to_le32(DEFAULT_BGSCAN_INTERVAL);
bg_scan->report_condition =
wlan_cpu_to_le32(bg_scan_in->report_condition);
if ((bg_scan_in->action == BG_SCAN_ACT_GET) ||
(bg_scan_in->action == BG_SCAN_ACT_GET_PPS_UAPSD) ||
(!bg_scan->enable))
goto done;
tlv = (t_u8 *)bg_scan + sizeof(HostCmd_DS_802_11_BG_SCAN_CONFIG);
num_probes = (bg_scan_in->num_probes ? bg_scan_in->num_probes :
pmadapter->scan_probes);
if (num_probes) {
pnum_probes_tlv = (MrvlIEtypes_NumProbes_t *)tlv;
pnum_probes_tlv->header.type =
wlan_cpu_to_le16(TLV_TYPE_NUMPROBES);
pnum_probes_tlv->header.len =
wlan_cpu_to_le16(sizeof(pnum_probes_tlv->num_probes));
pnum_probes_tlv->num_probes =
wlan_cpu_to_le16((t_u16)num_probes);
tlv += sizeof(MrvlIEtypes_NumProbes_t);
cmd_size += sizeof(MrvlIEtypes_NumProbes_t);
}
if (bg_scan_in->rssi_threshold) {
rssi_tlv = (MrvlIEtypes_BeaconLowRssiThreshold_t *)tlv;
rssi_tlv->header.type = wlan_cpu_to_le16(TLV_TYPE_RSSI_LOW);
rssi_tlv->header.len =
wlan_cpu_to_le16(sizeof
(MrvlIEtypes_BeaconLowRssiThreshold_t)
- sizeof(MrvlIEtypesHeader_t));
rssi_tlv->value = bg_scan_in->rssi_threshold;
rssi_tlv->frequency = 0;
tlv += sizeof(MrvlIEtypes_BeaconLowRssiThreshold_t);
cmd_size += sizeof(MrvlIEtypes_BeaconLowRssiThreshold_t);
}
if (bg_scan_in->snr_threshold) {
snr_tlv = (MrvlIEtypes_BeaconLowSnrThreshold_t *)tlv;
snr_tlv->header.type = wlan_cpu_to_le16(TLV_TYPE_SNR_LOW);
snr_tlv->header.len =
wlan_cpu_to_le16(sizeof
(MrvlIEtypes_BeaconLowSnrThreshold_t) -
sizeof(MrvlIEtypesHeader_t));
snr_tlv->value = bg_scan_in->snr_threshold;
snr_tlv->frequency = 0;
tlv += sizeof(MrvlIEtypes_BeaconLowRssiThreshold_t);
cmd_size += sizeof(MrvlIEtypes_BeaconLowRssiThreshold_t);
}
if (bg_scan_in->repeat_count) {
tlv_repeat = (MrvlIEtypes_RepeatCount_t *)tlv;
tlv_repeat->header.type =
wlan_cpu_to_le16(TLV_TYPE_REPEAT_COUNT);
tlv_repeat->header.len =
wlan_cpu_to_le16(sizeof(MrvlIEtypes_RepeatCount_t) -
sizeof(MrvlIEtypesHeader_t));
tlv_repeat->repeat_count =
wlan_cpu_to_le16(bg_scan_in->repeat_count);
tlv += sizeof(MrvlIEtypes_RepeatCount_t);
cmd_size += sizeof(MrvlIEtypes_RepeatCount_t);
}
for (ssid_idx = 0; ((ssid_idx < NELEMENTS(bg_scan_in->ssid_list))
&& (*bg_scan_in->ssid_list[ssid_idx].ssid ||
bg_scan_in->ssid_list[ssid_idx].max_len));
ssid_idx++) {
ssid_len =
wlan_strlen((char *)bg_scan_in->ssid_list[ssid_idx].
ssid);
pwildcard_ssid_tlv = (MrvlIEtypes_WildCardSsIdParamSet_t *)tlv;
pwildcard_ssid_tlv->header.type =
wlan_cpu_to_le16(TLV_TYPE_WILDCARDSSID);
pwildcard_ssid_tlv->header.len =
(t_u16)(ssid_len +
sizeof(pwildcard_ssid_tlv->max_ssid_length));
pwildcard_ssid_tlv->max_ssid_length =
bg_scan_in->ssid_list[ssid_idx].max_len;
memcpy(pmadapter, pwildcard_ssid_tlv->ssid,
bg_scan_in->ssid_list[ssid_idx].ssid,
MIN(MLAN_MAX_SSID_LENGTH, ssid_len));
tlv += sizeof(pwildcard_ssid_tlv->header) +
pwildcard_ssid_tlv->header.len;
cmd_size +=
sizeof(pwildcard_ssid_tlv->header) +
pwildcard_ssid_tlv->header.len;
pwildcard_ssid_tlv->header.len =
wlan_cpu_to_le16(pwildcard_ssid_tlv->header.len);
PRINTM(MINFO, "Scan: ssid_list[%d]: %s, %d\n", ssid_idx,
pwildcard_ssid_tlv->ssid,
pwildcard_ssid_tlv->max_ssid_length);
}
if (bg_scan_in->chan_list[0].chan_number) {
tlv_chan_list = (MrvlIEtypes_ChanListParamSet_t *)tlv;
PRINTM(MINFO, "Scan: Using supplied channel list\n");
chan_num = 0;
for (chan_idx = 0; chan_idx < WLAN_BG_SCAN_CHAN_MAX
&& bg_scan_in->chan_list[chan_idx].chan_number;
chan_idx++) {
radio_type = bg_scan_in->chan_list[chan_idx].radio_type;
if (!wlan_is_band_compatible
(pmpriv->config_bands | pmadapter->adhoc_start_band,
radio_type_to_band(radio_type)))
continue;
scan_type = bg_scan_in->chan_list[chan_idx].scan_type;
/* Prevent active scanning on a radar controlled channel */
if (radio_type == BAND_5GHZ) {
if (wlan_11h_radar_detect_required
(pmpriv,
bg_scan_in->chan_list[chan_idx].
chan_number)) {
scan_type = MLAN_SCAN_TYPE_PASSIVE;
}
}
if (radio_type == BAND_2GHZ) {
if (wlan_bg_scan_type_is_passive
(pmpriv,
bg_scan_in->chan_list[chan_idx].
chan_number)) {
scan_type = MLAN_SCAN_TYPE_PASSIVE;
}
}
tlv_chan_list->chan_scan_param[chan_num].chan_number =
bg_scan_in->chan_list[chan_idx].chan_number;
tlv_chan_list->chan_scan_param[chan_num].bandcfg.
chanBand =
bg_scan_in->chan_list[chan_idx].radio_type;
if (scan_type == MLAN_SCAN_TYPE_PASSIVE) {
tlv_chan_list->chan_scan_param[chan_num].
chan_scan_mode.passive_scan = MTRUE;
} else {
tlv_chan_list->chan_scan_param[chan_num].
chan_scan_mode.passive_scan = MFALSE;
}
if (bg_scan_in->chan_list[chan_idx].scan_time) {
scan_dur =
(t_u16)bg_scan_in->chan_list[chan_idx].
scan_time;
} else {
if (scan_type == MLAN_SCAN_TYPE_PASSIVE) {
scan_dur = pmadapter->passive_scan_time;
} else {
scan_dur =
pmadapter->specific_scan_time;
}
}
tlv_chan_list->chan_scan_param[chan_num].min_scan_time =
wlan_cpu_to_le16(scan_dur);
tlv_chan_list->chan_scan_param[chan_num].max_scan_time =
wlan_cpu_to_le16(scan_dur);
chan_num++;
}
tlv_chan_list->header.type =
wlan_cpu_to_le16(TLV_TYPE_CHANLIST);
tlv_chan_list->header.len =
wlan_cpu_to_le16(sizeof(ChanScanParamSet_t) * chan_num);
tlv += sizeof(MrvlIEtypesHeader_t) +
sizeof(ChanScanParamSet_t) * chan_num;
cmd_size +=
sizeof(MrvlIEtypesHeader_t) +
sizeof(ChanScanParamSet_t) * chan_num;
} else {
tlv_chan_list = (MrvlIEtypes_ChanListParamSet_t *)tlv;
chan_num =
wlan_bgscan_create_channel_list(pmpriv, bg_scan_in,
tlv_chan_list);
tlv_chan_list->header.type =
wlan_cpu_to_le16(TLV_TYPE_CHANLIST);
tlv_chan_list->header.len =
wlan_cpu_to_le16(sizeof(ChanScanParamSet_t) * chan_num);
tlv += sizeof(MrvlIEtypesHeader_t) +
sizeof(ChanScanParamSet_t) * chan_num;
cmd_size +=
sizeof(MrvlIEtypesHeader_t) +
sizeof(ChanScanParamSet_t) * chan_num;
}
if (bg_scan_in->chan_per_scan) {
bg_scan->chan_per_scan = bg_scan_in->chan_per_scan;
} else {
if (bg_scan_in->report_condition & BG_SCAN_WAIT_ALL_CHAN_DONE)
bg_scan->chan_per_scan = chan_num;
else
bg_scan->chan_per_scan =
MRVDRV_MAX_CHANNELS_PER_SPECIFIC_SCAN;
}
tlv_start_later = (MrvlIEtypes_StartLater_t *)tlv;
tlv_start_later->header.type =
wlan_cpu_to_le16(TLV_TYPE_STARTBGSCANLATER);
tlv_start_later->header.len =
wlan_cpu_to_le16(sizeof(MrvlIEtypes_StartLater_t) -
sizeof(MrvlIEtypesHeader_t));
tlv_start_later->value = wlan_cpu_to_le16(bg_scan_in->start_later);
tlv += sizeof(MrvlIEtypes_StartLater_t);
cmd_size += sizeof(MrvlIEtypes_StartLater_t);
done:
pcmd->size = wlan_cpu_to_le16(cmd_size);
LEAVE();
return MLAN_STATUS_SUCCESS;
}
/**
* @brief This function handles the command response of extended scan
*
* @param pmpriv A pointer to mlan_private structure
* @param resp A pointer to HostCmd_DS_COMMAND
* @param pioctl_buf A pointer to mlan_ioctl_req structure
*
* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
*/
mlan_status
wlan_ret_bgscan_config(IN mlan_private *pmpriv,
IN HostCmd_DS_COMMAND *resp,
IN mlan_ioctl_req *pioctl_buf)
{
mlan_ds_scan *pscan = MNULL;
HostCmd_DS_802_11_BG_SCAN_CONFIG *bg_scan =
&resp->params.bg_scan_config;
wlan_bgscan_cfg *bg_scan_out = MNULL;
ENTER();
if (pioctl_buf) {
pscan = (mlan_ds_scan *)pioctl_buf->pbuf;
bg_scan_out =
(wlan_bgscan_cfg *)pscan->param.user_scan.scan_cfg_buf;
bg_scan_out->action = wlan_le16_to_cpu(bg_scan->action);
if ((bg_scan_out->action == BG_SCAN_ACT_GET) &&
(bg_scan_out->action == BG_SCAN_ACT_GET_PPS_UAPSD)) {
bg_scan_out->enable = bg_scan->enable;
bg_scan_out->bss_type = bg_scan->bss_type;
bg_scan_out->chan_per_scan = bg_scan->chan_per_scan;
bg_scan_out->scan_interval =
wlan_le32_to_cpu(bg_scan->scan_interval);
bg_scan_out->report_condition =
wlan_le32_to_cpu(bg_scan->report_condition);
pioctl_buf->data_read_written =
sizeof(mlan_ds_scan) + MLAN_SUB_COMMAND_SIZE;
}
}
LEAVE();
return MLAN_STATUS_SUCCESS;
}
/**
* @brief This function handles the command response of bgscan_query
* @param pmpriv A pointer to mlan_private structure
* @param resp A pointer to HostCmd_DS_COMMAND
* @param pioctl_buf A pointer to mlan_ioctl_req structure
*
* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
*/
mlan_status
wlan_ret_802_11_bgscan_query(IN mlan_private *pmpriv,
IN HostCmd_DS_COMMAND *resp,
IN mlan_ioctl_req *pioctl_buf)
{
mlan_ds_scan *pscan = MNULL;
mlan_adapter *pmadapter = pmpriv->adapter;
ENTER();
wlan_ret_802_11_scan(pmpriv, resp, MNULL);
if (pioctl_buf) {
pscan = (mlan_ds_scan *)pioctl_buf->pbuf;
pscan->param.scan_resp.pscan_table =
(t_u8 *)pmadapter->pscan_table;
pscan->param.scan_resp.num_in_scan_table =
pmadapter->num_in_scan_table;
pscan->param.scan_resp.age_in_secs = pmadapter->age_in_secs;
pscan->param.scan_resp.pchan_stats =
(t_u8 *)pmadapter->pchan_stats;
pscan->param.scan_resp.num_in_chan_stats =
pmadapter->num_in_chan_stats;
pioctl_buf->data_read_written = sizeof(mlan_scan_resp) +
MLAN_SUB_COMMAND_SIZE;
}
LEAVE();
return MLAN_STATUS_SUCCESS;
}
/**
* @brief This function finds ssid in ssid list.
*
* @param pmpriv A pointer to mlan_private structure
* @param ssid SSID to find in the list
* @param bssid BSSID to qualify the SSID selection (if provided)
* @param mode Network mode: Infrastructure or IBSS
*
* @return index in BSSID list or < 0 if error
*/
t_s32
wlan_find_ssid_in_list(IN mlan_private *pmpriv,
IN mlan_802_11_ssid *ssid, IN t_u8 *bssid, IN t_u32 mode)
{
mlan_adapter *pmadapter = pmpriv->adapter;
t_s32 net = -1, j;
t_u8 best_rssi = 0;
t_u32 i;
ENTER();
PRINTM(MINFO, "Num of entries in scan table = %d\n",
pmadapter->num_in_scan_table);
/*
* Loop through the table until the maximum is reached or until a match
* is found based on the bssid field comparison
*/
for (i = 0;
i < pmadapter->num_in_scan_table && (!bssid || (bssid && net < 0));
i++) {
if (!wlan_ssid_cmp
(pmadapter, &pmadapter->pscan_table[i].ssid, ssid) &&
(!bssid ||
!memcmp(pmadapter, pmadapter->pscan_table[i].mac_address,
bssid, MLAN_MAC_ADDR_LENGTH))) {
if ((mode == MLAN_BSS_MODE_INFRA) &&
!wlan_is_band_compatible(pmpriv->config_bands,
pmadapter->pscan_table[i].
bss_band))
continue;
switch (mode) {
case MLAN_BSS_MODE_INFRA:
case MLAN_BSS_MODE_IBSS:
j = wlan_is_network_compatible(pmpriv, i, mode);
if (j >= 0) {
if (SCAN_RSSI
(pmadapter->pscan_table[i].rssi) >
best_rssi) {
best_rssi =
SCAN_RSSI(pmadapter->
pscan_table
[i].rssi);
net = i;
}
} else {
if (net == -1)
net = j;
}
break;
case MLAN_BSS_MODE_AUTO:
default:
/*
* Do not check compatibility if the mode requested is
* Auto/Unknown. Allows generic find to work without
* verifying against the Adapter security settings
*/
if (SCAN_RSSI(pmadapter->pscan_table[i].rssi) >
best_rssi) {
best_rssi =
SCAN_RSSI(pmadapter->
pscan_table[i].rssi);
net = i;
}
break;
}
}
}
LEAVE();
return net;
}
/**
* @brief This function finds a specific compatible BSSID in the scan list
*
* @param pmpriv A pointer to mlan_private structure
* @param bssid BSSID to find in the scan list
* @param mode Network mode: Infrastructure or IBSS
*
* @return index in BSSID list or < 0 if error
*/
t_s32
wlan_find_bssid_in_list(IN mlan_private *pmpriv, IN t_u8 *bssid, IN t_u32 mode)
{
mlan_adapter *pmadapter = pmpriv->adapter;
t_s32 net = -1;
t_u32 i;
ENTER();
if (!bssid) {
LEAVE();
return -1;
}
PRINTM(MINFO, "FindBSSID: Num of BSSIDs = %d\n",
pmadapter->num_in_scan_table);
/*
* Look through the scan table for a compatible match. The ret return
* variable will be equal to the index in the scan table (greater
* than zero) if the network is compatible. The loop will continue
* past a matched bssid that is not compatible in case there is an
* AP with multiple SSIDs assigned to the same BSSID
*/
for (i = 0; net < 0 && i < pmadapter->num_in_scan_table; i++) {
if (!memcmp
(pmadapter, pmadapter->pscan_table[i].mac_address, bssid,
MLAN_MAC_ADDR_LENGTH)) {
if ((mode == MLAN_BSS_MODE_INFRA) &&
!wlan_is_band_compatible(pmpriv->config_bands,
pmadapter->pscan_table[i].
bss_band))
continue;
switch (mode) {
case MLAN_BSS_MODE_INFRA:
case MLAN_BSS_MODE_IBSS:
net = wlan_is_network_compatible(pmpriv, i,
mode);
break;
default:
net = i;
break;
}
}
}
LEAVE();
return net;
}
/**
* @brief Compare two SSIDs
*
* @param pmadapter A pointer to mlan_adapter structure
* @param ssid1 A pointer to ssid to compare
* @param ssid2 A pointer to ssid to compare
*
* @return 0--ssid is same, otherwise is different
*/
t_s32
wlan_ssid_cmp(IN pmlan_adapter pmadapter,
IN mlan_802_11_ssid *ssid1, IN mlan_802_11_ssid *ssid2)
{
ENTER();
if (!ssid1 || !ssid2) {
LEAVE();
return -1;
}
if (ssid1->ssid_len != ssid2->ssid_len) {
LEAVE();
return -1;
}
LEAVE();
return memcmp(pmadapter, ssid1->ssid, ssid2->ssid, ssid1->ssid_len);
}
/**
* @brief Find the AP with specific ssid in the scan list
*
* @param pmpriv A pointer to mlan_private structure
* @param preq_ssid_bssid A pointer to AP's ssid returned
*
* @return MLAN_STATUS_SUCCESS--success, otherwise--fail
*/
mlan_status
wlan_find_best_network(IN mlan_private *pmpriv,
OUT mlan_ssid_bssid *preq_ssid_bssid)
{
mlan_adapter *pmadapter = pmpriv->adapter;
mlan_status ret = MLAN_STATUS_SUCCESS;
BSSDescriptor_t *preq_bss;
t_s32 i;
ENTER();
memset(pmadapter, preq_ssid_bssid, 0, sizeof(mlan_ssid_bssid));
i = wlan_find_best_network_in_list(pmpriv);
if (i >= 0) {
preq_bss = &pmadapter->pscan_table[i];
memcpy(pmadapter, &preq_ssid_bssid->ssid, &preq_bss->ssid,
sizeof(mlan_802_11_ssid));
memcpy(pmadapter, (t_u8 *)&preq_ssid_bssid->bssid,
(t_u8 *)&preq_bss->mac_address, MLAN_MAC_ADDR_LENGTH);
/* Make sure we are in the right mode */
if (pmpriv->bss_mode == MLAN_BSS_MODE_AUTO)
pmpriv->bss_mode = preq_bss->bss_mode;
preq_ssid_bssid->channel = (t_u16)preq_bss->channel;
if (preq_bss->pmd_ie
&& wlan_ft_akm_is_used(pmpriv, (t_u8 *)preq_bss->prsn_ie)
) {
preq_ssid_bssid->ft_md = preq_bss->pmd_ie->mdid;
preq_ssid_bssid->ft_cap = preq_bss->pmd_ie->ft_cap;
}
preq_ssid_bssid->bss_band = preq_bss->bss_band;
}
if (!preq_ssid_bssid->ssid.ssid_len) {
ret = MLAN_STATUS_FAILURE;
goto done;
}
PRINTM(MINFO, "Best network found = [%s], "
"[" MACSTR "]\n",
preq_ssid_bssid->ssid.ssid, MAC2STR(preq_ssid_bssid->bssid));
done:
LEAVE();
return ret;
}
/**
* @brief Send a scan command for all available channels filtered on a spec
*
* @param pmpriv A pointer to mlan_private structure
* @param pioctl_buf A pointer to MLAN IOCTL Request buffer
* @param preq_ssid A pointer to AP's ssid returned
*
* @return MLAN_STATUS_SUCCESS--success, otherwise--fail
*/
mlan_status
wlan_scan_specific_ssid(IN mlan_private *pmpriv,
IN t_void *pioctl_buf, IN mlan_802_11_ssid *preq_ssid)
{
mlan_status ret = MLAN_STATUS_SUCCESS;
mlan_callbacks *pcb = (mlan_callbacks *)&pmpriv->adapter->callbacks;
wlan_user_scan_cfg *pscan_cfg;
pmlan_ioctl_req pioctl_req = (mlan_ioctl_req *)pioctl_buf;
ENTER();
if (!preq_ssid) {
if (pioctl_req)
pioctl_req->status_code = MLAN_ERROR_CMD_SCAN_FAIL;
ret = MLAN_STATUS_FAILURE;
goto done;
}
wlan_scan_delete_ssid_table_entry(pmpriv, preq_ssid);
ret = pcb->moal_malloc(pmpriv->adapter->pmoal_handle,
sizeof(wlan_user_scan_cfg), MLAN_MEM_DEF,
(t_u8 **)&pscan_cfg);
if (ret != MLAN_STATUS_SUCCESS || !pscan_cfg) {
PRINTM(MERROR, "Memory allocation for pscan_cfg failed!\n");
if (pioctl_req)
pioctl_req->status_code = MLAN_ERROR_NO_MEM;
ret = MLAN_STATUS_FAILURE;
goto done;
}
memset(pmpriv->adapter, pscan_cfg, 0x00, sizeof(wlan_user_scan_cfg));
memcpy(pmpriv->adapter, pscan_cfg->ssid_list[0].ssid,
preq_ssid->ssid, preq_ssid->ssid_len);
pscan_cfg->keep_previous_scan = MTRUE;
ret = wlan_scan_networks(pmpriv, pioctl_buf, pscan_cfg);
if (pscan_cfg)
pcb->moal_mfree(pmpriv->adapter->pmoal_handle,
(t_u8 *)pscan_cfg);
done:
LEAVE();
return ret;
}
/**
* @brief Save a beacon buffer of the current bss descriptor
* Save the current beacon buffer to restore in the following cases that
* makes the bcn_buf not to contain the current ssid's beacon buffer.
* - the current ssid was not found somehow in the last scan.
* - the current ssid was the last entry of the scan table and overloaded.
*
* @param pmpriv A pointer to mlan_private structure
*
* @return N/A
*/
t_void
wlan_save_curr_bcn(IN mlan_private *pmpriv)
{
mlan_adapter *pmadapter = pmpriv->adapter;
mlan_callbacks *pcb = (pmlan_callbacks)&pmadapter->callbacks;
BSSDescriptor_t *pcurr_bss = &pmpriv->curr_bss_params.bss_descriptor;
mlan_status ret = MLAN_STATUS_SUCCESS;
ENTER();
pcb->moal_spin_lock(pmadapter->pmoal_handle, pmpriv->curr_bcn_buf_lock);
/* save the beacon buffer if it is not saved or updated */
if ((pmpriv->pcurr_bcn_buf == MNULL) ||
(pmpriv->curr_bcn_size != pcurr_bss->beacon_buf_size) ||
(memcmp
(pmpriv->adapter, pmpriv->pcurr_bcn_buf, pcurr_bss->pbeacon_buf,
pcurr_bss->beacon_buf_size))) {
if (pmpriv->pcurr_bcn_buf) {
pcb->moal_mfree(pmadapter->pmoal_handle,
pmpriv->pcurr_bcn_buf);
pmpriv->pcurr_bcn_buf = MNULL;
}
pmpriv->curr_bcn_size = pcurr_bss->beacon_buf_size;
if (pmpriv->curr_bcn_size) {
ret = pcb->moal_malloc(pmadapter->pmoal_handle,
pcurr_bss->beacon_buf_size,
MLAN_MEM_DEF,
&pmpriv->pcurr_bcn_buf);
if ((ret == MLAN_STATUS_SUCCESS) &&
pmpriv->pcurr_bcn_buf) {
memcpy(pmpriv->adapter, pmpriv->pcurr_bcn_buf,
pcurr_bss->pbeacon_buf,
pcurr_bss->beacon_buf_size);
PRINTM(MINFO, "current beacon saved %d\n",
pmpriv->curr_bcn_size);
} else {
PRINTM(MERROR,
"Fail to allocate curr_bcn_buf\n");
}
}
}
wlan_update_curr_bcn(pmpriv);
pcb->moal_spin_unlock(pmadapter->pmoal_handle,
pmpriv->curr_bcn_buf_lock);
LEAVE();
}
/**
* @brief Free a beacon buffer of the current bss descriptor
*
* @param pmpriv A pointer to mlan_private structure
*
* @return N/A
*/
t_void
wlan_free_curr_bcn(IN mlan_private *pmpriv)
{
mlan_adapter *pmadapter = pmpriv->adapter;
mlan_callbacks *pcb = (pmlan_callbacks)&pmadapter->callbacks;
ENTER();
if (pmpriv->pcurr_bcn_buf) {
pcb->moal_mfree(pmadapter->pmoal_handle, pmpriv->pcurr_bcn_buf);
pmpriv->pcurr_bcn_buf = MNULL;
}
LEAVE();
}
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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