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tegrakernel/kernel/nvidia/drivers/net/wireless/bcmdhd/dhd_pno.c

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initial commit tegra kernel 32.6.1
2022-02-16 09:13:02 -06:00
/*
* Broadcom Dongle Host Driver (DHD)
* Prefered Network Offload and Wi-Fi Location Service(WLS) code.
*
* Copyright (C) 1999-2015, Broadcom Corporation
* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2 (the "GPL"),
* available at http://www.broadcom.com/licenses/GPLv2.php, with the
* following added to such license:
*
* As a special exception, the copyright holders of this software give you
* permission to link this software with independent modules, and to copy and
* distribute the resulting executable under terms of your choice, provided that
* you also meet, for each linked independent module, the terms and conditions of
* the license of that module. An independent module is a module which is not
* derived from this software. The special exception does not apply to any
* modifications of the software.
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a license
* other than the GPL, without Broadcom's express prior written consent.
*
* $Id: dhd_pno.c 423669 2013-09-18 13:01:55Z yangj$
*/
#ifdef PNO_SUPPORT
#include <typedefs.h>
#include <osl.h>
#include <epivers.h>
#include <bcmutils.h>
#include <bcmendian.h>
#include <linuxver.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/sort.h>
#include <linux/version.h>
#include <dngl_stats.h>
#include <wlioctl.h>
#include <proto/bcmevent.h>
#include <dhd.h>
#include <dhd_pno.h>
#include <dhd_dbg.h>
#include <wl_cfg80211.h>
#include <wldev_common.h>
#define IS_CHANNEL_RADAR(channel) (((channel & WL_CHAN_RADAR) || \
(channel & WL_CHAN_PASSIVE)) ? true : false)
#ifdef __BIG_ENDIAN
#include <bcmendian.h>
#define htod32(i) (bcmswap32(i))
#define htod16(i) (bcmswap16(i))
#define dtoh32(i) (bcmswap32(i))
#define dtoh16(i) (bcmswap16(i))
#define htodchanspec(i) htod16(i)
#define dtohchanspec(i) dtoh16(i)
#else
#define htod32(i) (i)
#define htod16(i) (i)
#define dtoh32(i) (i)
#define dtoh16(i) (i)
#define htodchanspec(i) (i)
#define dtohchanspec(i) (i)
#endif /* IL_BIGENDINA */
#define NULL_CHECK(p, s, err) \
do { \
if (!(p)) { \
printf("NULL POINTER (%s) : %s\n", __FUNCTION__, (s)); \
err = BCME_ERROR; \
return err; \
} \
} while (0)
#define PNO_GET_PNOSTATE(dhd) ((dhd_pno_status_info_t *)dhd->pno_state)
#define PNO_BESTNET_LEN 1024
#define PNO_ON 1
#define PNO_OFF 0
#define CHANNEL_2G_MAX 14
#define MAX_NODE_CNT 5
#define WLS_SUPPORTED(pno_state) (pno_state->wls_supported == TRUE)
#define TIME_DIFF(timestamp1, timestamp2) (abs((uint32)(timestamp1/1000) \
- (uint32)(timestamp2/1000)))
#define ENTRY_OVERHEAD strlen("bssid=\nssid=\nfreq=\nlevel=\nage=\ndist=\ndistSd=\n====")
#define TIME_MIN_DIFF 5
static inline bool
is_dfs(uint16 channel)
{
if (channel >= 52 && channel <= 64) /* class 2 */
return TRUE;
else if (channel >= 100 && channel <= 140) /* class 4 */
return TRUE;
else
return FALSE;
}
int
dhd_pno_clean(dhd_pub_t *dhd)
{
int pfn = 0;
int err;
dhd_pno_status_info_t *_pno_state;
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
_pno_state = PNO_GET_PNOSTATE(dhd);
DHD_PNO(("%s enter\n", __FUNCTION__));
/* Disable PNO */
err = dhd_iovar(dhd, 0, "pfn", (char *)&pfn, sizeof(pfn), NULL, 0,
TRUE);
if (err < 0) {
DHD_ERROR(("%s : failed to execute pfn(error : %d)\n",
__FUNCTION__, err));
goto exit;
}
_pno_state->pno_status = DHD_PNO_DISABLED;
err = dhd_iovar(dhd, 0, "pfnclear", NULL, 0, NULL, 0, TRUE);
if (err < 0) {
DHD_ERROR(("%s : failed to execute pfnclear(error : %d)\n",
__FUNCTION__, err));
}
exit:
return err;
}
static int
_dhd_pno_suspend(dhd_pub_t *dhd)
{
int err;
int suspend = 1;
dhd_pno_status_info_t *_pno_state;
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
DHD_PNO(("%s enter\n", __FUNCTION__));
_pno_state = PNO_GET_PNOSTATE(dhd);
err = dhd_iovar(dhd, 0, "pfn_suspend", (char *)&suspend,
sizeof(suspend), NULL, 0, TRUE);
if (err < 0) {
DHD_ERROR(("%s : failed to suspend pfn(error :%d)\n", __FUNCTION__, err));
goto exit;
}
_pno_state->pno_status = DHD_PNO_SUSPEND;
exit:
return err;
}
static int
_dhd_pno_enable(dhd_pub_t *dhd, int enable)
{
int err = BCME_OK;
dhd_pno_status_info_t *_pno_state;
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
_pno_state = PNO_GET_PNOSTATE(dhd);
DHD_PNO(("%s enter\n", __FUNCTION__));
if (enable & 0xfffe) {
DHD_ERROR(("%s invalid value\n", __FUNCTION__));
err = BCME_BADARG;
goto exit;
}
if (!dhd_support_sta_mode(dhd)) {
DHD_ERROR(("PNO is not allowed for non-STA mode"));
err = BCME_BADOPTION;
goto exit;
}
if (enable) {
if ((_pno_state->pno_mode & DHD_PNO_LEGACY_MODE) &&
dhd_is_associated(dhd, 0, NULL)) {
DHD_ERROR(("%s Legacy PNO mode cannot be enabled "
"in assoc mode , ignore it\n", __FUNCTION__));
err = BCME_BADOPTION;
goto exit;
}
}
/* Enable/Disable PNO */
err = dhd_iovar(dhd, 0, "pfn", (char *)&enable, sizeof(enable), NULL,
0, TRUE);
if (err < 0) {
DHD_ERROR(("%s : failed to execute pfn_set\n", __FUNCTION__));
goto exit;
}
_pno_state->pno_status = (enable)?
DHD_PNO_ENABLED : DHD_PNO_DISABLED;
if (!enable)
_pno_state->pno_mode = DHD_PNO_NONE_MODE;
DHD_PNO(("%s set pno as %s\n",
__FUNCTION__, enable ? "Enable" : "Disable"));
exit:
return err;
}
bool dhd_is_pno_supported(dhd_pub_t *dhd)
{
dhd_pno_status_info_t *_pno_state;
if (!dhd || !dhd->pno_state) {
DHD_ERROR(("NULL POINTER : %s\n",
__FUNCTION__));
return FALSE;
}
_pno_state = PNO_GET_PNOSTATE(dhd);
return WLS_SUPPORTED(_pno_state);
}
int
dhd_pno_set_mac_oui(dhd_pub_t *dhd, uint8 *oui)
{
int err = BCME_OK;
dhd_pno_status_info_t *_pno_state;
if (!dhd || !dhd->pno_state) {
DHD_ERROR(("NULL POINTER : %s\n", __FUNCTION__));
return BCME_ERROR;
}
_pno_state = PNO_GET_PNOSTATE(dhd);
if (ETHER_ISMULTI(oui)) {
DHD_ERROR(("Expected unicast OUI\n"));
err = BCME_ERROR;
} else {
memcpy(_pno_state->pno_oui, oui, DOT11_OUI_LEN);
DHD_PNO(("PNO mac oui to be used - %02x:%02x:%02x\n", _pno_state->pno_oui[0],
_pno_state->pno_oui[1], _pno_state->pno_oui[2]));
}
return err;
}
static int
_dhd_pno_set(dhd_pub_t *dhd, const dhd_pno_params_t *pno_params, dhd_pno_mode_t mode)
{
int err = BCME_OK;
wl_pfn_param_t pfn_param;
dhd_pno_params_t *_params;
dhd_pno_status_info_t *_pno_state;
bool combined_scan = FALSE;
DHD_PNO(("%s enter\n", __FUNCTION__));
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
_pno_state = PNO_GET_PNOSTATE(dhd);
memset(&pfn_param, 0, sizeof(pfn_param));
/* set pfn parameters */
pfn_param.version = htod32(PFN_VERSION);
pfn_param.flags = ((PFN_LIST_ORDER << SORT_CRITERIA_BIT) |
(ENABLE << IMMEDIATE_SCAN_BIT) | (ENABLE << REPORT_SEPERATELY_BIT));
if (mode == DHD_PNO_LEGACY_MODE) {
/* check and set extra pno params */
if ((pno_params->params_legacy.pno_repeat != 0) ||
(pno_params->params_legacy.pno_freq_expo_max != 0)) {
pfn_param.flags |= htod16(ENABLE << ENABLE_ADAPTSCAN_BIT);
pfn_param.repeat = (uchar) (pno_params->params_legacy.pno_repeat);
pfn_param.exp = (uchar) (pno_params->params_legacy.pno_freq_expo_max);
}
/* set up pno scan fr */
if (pno_params->params_legacy.scan_fr != 0)
pfn_param.scan_freq = htod32(pno_params->params_legacy.scan_fr);
if (_pno_state->pno_mode & DHD_PNO_BATCH_MODE) {
DHD_PNO(("will enable combined scan with BATCHIG SCAN MODE\n"));
mode |= DHD_PNO_BATCH_MODE;
combined_scan = TRUE;
} else if (_pno_state->pno_mode & DHD_PNO_HOTLIST_MODE) {
DHD_PNO(("will enable combined scan with HOTLIST SCAN MODE\n"));
mode |= DHD_PNO_HOTLIST_MODE;
combined_scan = TRUE;
}
}
if (mode & (DHD_PNO_BATCH_MODE | DHD_PNO_HOTLIST_MODE)) {
/* Scan frequency of 30 sec */
pfn_param.scan_freq = htod32(30);
/* slow adapt scan is off by default */
pfn_param.slow_freq = htod32(0);
/* RSSI margin of 30 dBm */
pfn_param.rssi_margin = htod16(30);
/* Network timeout 60 sec */
pfn_param.lost_network_timeout = htod32(60);
/* best n = 2 by default */
pfn_param.bestn = DEFAULT_BESTN;
/* mscan m=0 by default, so not record best networks by default */
pfn_param.mscan = DEFAULT_MSCAN;
/* default repeat = 10 */
pfn_param.repeat = DEFAULT_REPEAT;
/* by default, maximum scan interval = 2^2
* scan_freq when adaptive scan is turned on
*/
pfn_param.exp = DEFAULT_EXP;
if (mode == DHD_PNO_BATCH_MODE) {
/* In case of BATCH SCAN */
if (pno_params->params_batch.bestn)
pfn_param.bestn = pno_params->params_batch.bestn;
if (pno_params->params_batch.scan_fr)
pfn_param.scan_freq = htod32(pno_params->params_batch.scan_fr);
if (pno_params->params_batch.mscan)
pfn_param.mscan = pno_params->params_batch.mscan;
/* enable broadcast scan */
pfn_param.flags |= (ENABLE << ENABLE_BD_SCAN_BIT);
} else if (mode == DHD_PNO_HOTLIST_MODE) {
/* In case of HOTLIST SCAN */
if (pno_params->params_hotlist.scan_fr)
pfn_param.scan_freq = htod32(pno_params->params_hotlist.scan_fr);
pfn_param.bestn = 0;
pfn_param.repeat = 0;
/* enable broadcast scan */
pfn_param.flags |= (ENABLE << ENABLE_BD_SCAN_BIT);
}
if (combined_scan) {
/* Disable Adaptive Scan */
pfn_param.flags &= ~(htod16(ENABLE << ENABLE_ADAPTSCAN_BIT));
pfn_param.flags |= (ENABLE << ENABLE_BD_SCAN_BIT);
pfn_param.repeat = 0;
pfn_param.exp = 0;
if (_pno_state->pno_mode & DHD_PNO_BATCH_MODE) {
/* In case of Legacy PNO + BATCH SCAN */
_params = &(_pno_state->pno_params_arr[INDEX_OF_BATCH_PARAMS]);
if (_params->params_batch.bestn)
pfn_param.bestn = _params->params_batch.bestn;
if (_params->params_batch.scan_fr)
pfn_param.scan_freq = htod32(_params->params_batch.scan_fr);
if (_params->params_batch.mscan)
pfn_param.mscan = _params->params_batch.mscan;
} else if (_pno_state->pno_mode & DHD_PNO_HOTLIST_MODE) {
/* In case of Legacy PNO + HOTLIST SCAN */
_params = &(_pno_state->pno_params_arr[INDEX_OF_HOTLIST_PARAMS]);
if (_params->params_hotlist.scan_fr)
pfn_param.scan_freq = htod32(_params->params_hotlist.scan_fr);
pfn_param.bestn = 0;
pfn_param.repeat = 0;
}
}
}
if (pfn_param.scan_freq < htod32(PNO_SCAN_MIN_FW_SEC) ||
pfn_param.scan_freq > htod32(PNO_SCAN_MAX_FW_SEC)) {
DHD_ERROR(("%s pno freq(%d sec) is not valid \n",
__FUNCTION__, PNO_SCAN_MIN_FW_SEC));
err = BCME_BADARG;
goto exit;
}
if (mode == DHD_PNO_BATCH_MODE) {
int _tmp = pfn_param.bestn;
/* set bestn to calculate the max mscan which firmware supports */
err = dhd_iovar(dhd, 0, "pfnmem", (char *)&_tmp, sizeof(_tmp),
NULL, 0, TRUE);
if (err < 0) {
DHD_ERROR(("%s : failed to set pfnmem\n", __FUNCTION__));
goto exit;
}
/* get max mscan which the firmware supports */
err = dhd_iovar(dhd, 0, "pfnmem", NULL, 0, (char *)&_tmp,
sizeof(_tmp), FALSE);
if (err < 0) {
DHD_ERROR(("%s : failed to get pfnmem\n", __FUNCTION__));
goto exit;
}
DHD_PNO((" returned mscan : %d, set bestn : %d\n", _tmp, pfn_param.bestn));
pfn_param.mscan = MIN(pfn_param.mscan, _tmp);
}
err = dhd_iovar(dhd, 0, "pfn_set", (char *)&pfn_param,
sizeof(pfn_param), NULL, 0, TRUE);
if (err < 0) {
DHD_ERROR(("%s : failed to execute pfn_set\n", __FUNCTION__));
goto exit;
}
/* need to return mscan if this is for batch scan instead of err */
err = (mode == DHD_PNO_BATCH_MODE)? pfn_param.mscan : err;
exit:
return err;
}
static int
_dhd_pno_add_ssid(dhd_pub_t *dhd, wlc_ssid_t* ssids_list, int nssid)
{
int err = BCME_OK;
int i = 0;
wl_pfn_t pfn_element;
NULL_CHECK(dhd, "dhd is NULL", err);
if (nssid) {
NULL_CHECK(ssids_list, "ssid list is NULL", err);
}
memset(&pfn_element, 0, sizeof(pfn_element));
{
int j;
for (j = 0; j < nssid; j++) {
DHD_PNO(("%d: scan for %s size = %d\n", j,
ssids_list[j].SSID, ssids_list[j].SSID_len));
}
}
/* Check for broadcast ssid */
for (i = 0; i < nssid; i++) {
if (!ssids_list[i].SSID_len) {
DHD_ERROR(("%d: Broadcast SSID is ilegal for PNO setting\n", i));
err = BCME_ERROR;
goto exit;
}
}
/* set all pfn ssid */
for (i = 0; i < nssid; i++) {
pfn_element.infra = htod32(DOT11_BSSTYPE_INFRASTRUCTURE);
pfn_element.auth = (DOT11_OPEN_SYSTEM);
pfn_element.wpa_auth = htod32(WPA_AUTH_PFN_ANY);
pfn_element.wsec = htod32(0);
pfn_element.infra = htod32(1);
pfn_element.flags = htod32(ENABLE << WL_PFN_HIDDEN_BIT);
memcpy((char *)pfn_element.ssid.SSID, ssids_list[i].SSID,
ssids_list[i].SSID_len);
pfn_element.ssid.SSID_len = ssids_list[i].SSID_len;
err = dhd_iovar(dhd, 0, "pfn_add", (char *)&pfn_element,
sizeof(pfn_element), NULL, 0, TRUE);
if (err < 0) {
DHD_ERROR(("%s : failed to execute pfn_add\n", __FUNCTION__));
goto exit;
}
}
exit:
return err;
}
/* qsort compare function */
static int
_dhd_pno_cmpfunc(const void *a, const void *b)
{
return (*(uint16*)a - *(uint16*)b);
}
static int
_dhd_pno_chan_merge(uint16 *d_chan_list, int *nchan,
uint16 *chan_list1, int nchan1, uint16 *chan_list2, int nchan2)
{
int err = BCME_OK;
int i = 0, j = 0, k = 0;
uint16 tmp;
NULL_CHECK(d_chan_list, "d_chan_list is NULL", err);
NULL_CHECK(nchan, "nchan is NULL", err);
NULL_CHECK(chan_list1, "chan_list1 is NULL", err);
NULL_CHECK(chan_list2, "chan_list2 is NULL", err);
/* chan_list1 and chan_list2 should be sorted at first */
while (i < nchan1 && j < nchan2) {
tmp = chan_list1[i] < chan_list2[j]?
chan_list1[i++] : chan_list2[j++];
for (; i < nchan1 && chan_list1[i] == tmp; i++);
for (; j < nchan2 && chan_list2[j] == tmp; j++);
d_chan_list[k++] = tmp;
}
while (i < nchan1) {
tmp = chan_list1[i++];
for (; i < nchan1 && chan_list1[i] == tmp; i++);
d_chan_list[k++] = tmp;
}
while (j < nchan2) {
tmp = chan_list2[j++];
for (; j < nchan2 && chan_list2[j] == tmp; j++);
d_chan_list[k++] = tmp;
}
*nchan = k;
return err;
}
struct net_device *dhd_pno_netdev;
static int
_dhd_pno_get_channels(dhd_pub_t *dhd, uint16 *d_chan_list,
int *nchan, uint8 band, bool skip_dfs)
{
int err = BCME_OK;
int i, j;
u32 channel = 0;
bool skip_passive;
uint32 chan_buf[WL_NUMCHANNELS + 1];
wl_uint32_list_t *list;
NULL_CHECK(dhd, "dhd is NULL", err);
if (*nchan) {
NULL_CHECK(d_chan_list, "d_chan_list is NULL", err);
}
memset(&chan_buf, 0, sizeof(chan_buf));
list = (wl_uint32_list_t *) (void *)chan_buf;
list->count = htod32(WL_NUMCHANNELS);
err = dhd_wl_ioctl_cmd(dhd, WLC_GET_VALID_CHANNELS, chan_buf, sizeof(chan_buf), FALSE, 0);
if (err < 0) {
DHD_ERROR(("failed to get channel list (err: %d)\n", err));
goto exit;
}
skip_passive = (band & WLC_BAND_ACTIVE);
band &= ~WLC_BAND_ACTIVE;
for (i = 0, j = 0; i < dtoh32(list->count) && i < *nchan; i++) {
if (band == WLC_BAND_2G) {
if (dtoh32(list->element[i]) > CHANNEL_2G_MAX)
continue;
} else if (band == WLC_BAND_5G) {
if (dtoh32(list->element[i]) <= CHANNEL_2G_MAX)
continue;
if (skip_dfs && is_dfs(dtoh32(list->element[i])))
continue;
} else { /* All channels */
if (skip_dfs && is_dfs(dtoh32(list->element[i])))
continue;
}
if (dhd_pno_netdev && skip_passive) {
channel = dtoh32(list->element[i]);
err = wldev_iovar_getint(dhd_pno_netdev, "per_chan_info", &channel);
if (err < 0) {
DHD_ERROR(("%s get 'per_chan_info' failed, error = %d\n", __FUNCTION__, err));
goto exit;
}
if (IS_CHANNEL_RADAR(channel)) {
DHD_ERROR(("%s: channel %d is passive - skip\n", __FUNCTION__, dtoh32(list->element[i])));
continue;
}
}
d_chan_list[j++] = dtoh32(list->element[i]);
}
*nchan = j;
exit:
return err;
}
static int
_dhd_pno_convert_format(dhd_pub_t *dhd, struct dhd_pno_batch_params *params_batch,
char *buf, int nbufsize)
{
int err = BCME_OK;
int bytes_written = 0, nreadsize = 0;
int t_delta = 0;
int nleftsize = nbufsize;
uint8 cnt = 0;
char *bp = buf;
char eabuf[ETHER_ADDR_STR_LEN];
#ifdef PNO_DEBUG
char *_base_bp;
char msg[150];
#endif
dhd_pno_bestnet_entry_t *iter, *next;
dhd_pno_scan_results_t *siter, *snext;
dhd_pno_best_header_t *phead, *pprev;
NULL_CHECK(params_batch, "params_batch is NULL", err);
if (nbufsize > 0)
NULL_CHECK(buf, "buf is NULL", err);
/* initialize the buffer */
memset(buf, 0, nbufsize);
DHD_PNO(("%s enter \n", __FUNCTION__));
/* # of scans */
if (!params_batch->get_batch.batch_started) {
bp += nreadsize = sprintf(bp, "scancount=%d\n",
params_batch->get_batch.expired_tot_scan_cnt);
nleftsize -= nreadsize;
params_batch->get_batch.batch_started = TRUE;
}
DHD_PNO(("%s scancount %d\n", __FUNCTION__, params_batch->get_batch.expired_tot_scan_cnt));
/* preestimate scan count until which scan result this report is going to end */
list_for_each_entry_safe(siter, snext,
&params_batch->get_batch.expired_scan_results_list, list) {
phead = siter->bestnetheader;
while (phead != NULL) {
/* if left_size is less than bestheader total size , stop this */
if (nleftsize <=
(phead->tot_size + phead->tot_cnt * ENTRY_OVERHEAD))
goto exit;
/* increase scan count */
cnt++;
/* # best of each scan */
DHD_PNO(("\n<loop : %d, apcount %d>\n", cnt - 1, phead->tot_cnt));
/* attribute of the scan */
if (phead->reason & PNO_STATUS_ABORT_MASK) {
bp += nreadsize = sprintf(bp, "trunc\n");
nleftsize -= nreadsize;
}
list_for_each_entry_safe(iter, next,
&phead->entry_list, list) {
t_delta = jiffies_to_msecs(jiffies - iter->recorded_time);
#ifdef PNO_DEBUG
_base_bp = bp;
memset(msg, 0, sizeof(msg));
#endif
/* BSSID info */
bp += nreadsize = sprintf(bp, "bssid=%s\n",
bcm_ether_ntoa((const struct ether_addr *)&iter->BSSID, eabuf));
nleftsize -= nreadsize;
/* SSID */
bp += nreadsize = sprintf(bp, "ssid=%s\n", iter->SSID);
nleftsize -= nreadsize;
/* channel */
bp += nreadsize = sprintf(bp, "freq=%d\n",
wf_channel2mhz(iter->channel,
iter->channel <= CH_MAX_2G_CHANNEL?
WF_CHAN_FACTOR_2_4_G : WF_CHAN_FACTOR_5_G));
nleftsize -= nreadsize;
/* RSSI */
bp += nreadsize = sprintf(bp, "level=%d\n", iter->RSSI);
nleftsize -= nreadsize;
/* add the time consumed in Driver to the timestamp of firmware */
iter->timestamp += t_delta;
bp += nreadsize = sprintf(bp, "age=%d\n", iter->timestamp);
nleftsize -= nreadsize;
/* RTT0 */
bp += nreadsize = sprintf(bp, "dist=%d\n",
(iter->rtt0 == 0)? -1 : iter->rtt0);
nleftsize -= nreadsize;
/* RTT1 */
bp += nreadsize = sprintf(bp, "distSd=%d\n",
(iter->rtt0 == 0)? -1 : iter->rtt1);
nleftsize -= nreadsize;
bp += nreadsize = sprintf(bp, "%s", AP_END_MARKER);
nleftsize -= nreadsize;
list_del(&iter->list);
MFREE(dhd->osh, iter, BESTNET_ENTRY_SIZE);
#ifdef PNO_DEBUG
memcpy(msg, _base_bp, bp - _base_bp);
DHD_PNO(("Entry : \n%s", msg));
#endif
}
bp += nreadsize = sprintf(bp, "%s", SCAN_END_MARKER);
DHD_PNO(("%s", SCAN_END_MARKER));
nleftsize -= nreadsize;
pprev = phead;
/* reset the header */
siter->bestnetheader = phead = phead->next;
MFREE(dhd->osh, pprev, BEST_HEADER_SIZE);
siter->cnt_header--;
}
if (phead == NULL) {
/* we store all entry in this scan , so it is ok to delete */
list_del(&siter->list);
MFREE(dhd->osh, siter, SCAN_RESULTS_SIZE);
}
}
exit:
if (cnt < params_batch->get_batch.expired_tot_scan_cnt) {
DHD_ERROR(("Buffer size is small to save all batch entry,"
" cnt : %d (remained_scan_cnt): %d\n",
cnt, params_batch->get_batch.expired_tot_scan_cnt - cnt));
}
params_batch->get_batch.expired_tot_scan_cnt -= cnt;
/* set FALSE only if the link list is empty after returning the data */
if (list_empty(&params_batch->get_batch.expired_scan_results_list)) {
params_batch->get_batch.batch_started = FALSE;
bp += sprintf(bp, "%s", RESULTS_END_MARKER);
DHD_PNO(("%s", RESULTS_END_MARKER));
DHD_PNO(("%s : Getting the batching data is complete\n", __FUNCTION__));
}
/* return used memory in buffer */
bytes_written = (int32)(bp - buf);
return bytes_written;
}
static int
_dhd_pno_clear_all_batch_results(dhd_pub_t *dhd, struct list_head *head, bool only_last)
{
int err = BCME_OK;
int removed_scan_cnt = 0;
dhd_pno_scan_results_t *siter, *snext;
dhd_pno_best_header_t *phead, *pprev;
dhd_pno_bestnet_entry_t *iter, *next;
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(head, "head is NULL", err);
NULL_CHECK(head->next, "head->next is NULL", err);
DHD_PNO(("%s enter\n", __FUNCTION__));
list_for_each_entry_safe(siter, snext,
head, list) {
if (only_last) {
/* in case that we need to delete only last one */
if (!list_is_last(&siter->list, head)) {
/* skip if the one is not last */
continue;
}
}
/* delete all data belong if the one is last */
phead = siter->bestnetheader;
while (phead != NULL) {
removed_scan_cnt++;
list_for_each_entry_safe(iter, next,
&phead->entry_list, list) {
list_del(&iter->list);
MFREE(dhd->osh, iter, BESTNET_ENTRY_SIZE);
}
pprev = phead;
phead = phead->next;
MFREE(dhd->osh, pprev, BEST_HEADER_SIZE);
}
if (phead == NULL) {
/* it is ok to delete top node */
list_del(&siter->list);
MFREE(dhd->osh, siter, SCAN_RESULTS_SIZE);
}
}
return removed_scan_cnt;
}
static int
_dhd_pno_cfg(dhd_pub_t *dhd, uint16 *channel_list, int nchan)
{
int err = BCME_OK;
int i = 0;
wl_pfn_cfg_t pfncfg_param;
NULL_CHECK(dhd, "dhd is NULL", err);
if (nchan) {
NULL_CHECK(channel_list, "nchan is NULL", err);
}
DHD_PNO(("%s enter : nchan : %d\n", __FUNCTION__, nchan));
memset(&pfncfg_param, 0, sizeof(wl_pfn_cfg_t));
/* Setup default values */
pfncfg_param.reporttype = htod32(WL_PFN_REPORT_ALLNET);
pfncfg_param.channel_num = htod32(0);
for (i = 0; i < nchan && nchan < WL_NUMCHANNELS; i++)
pfncfg_param.channel_list[i] = channel_list[i];
pfncfg_param.channel_num = htod32(nchan);
err = dhd_iovar(dhd, 0, "pfn_cfg", (char *)&pfncfg_param,
sizeof(pfncfg_param), NULL, 0, TRUE);
if (err < 0) {
DHD_ERROR(("%s : failed to execute pfn_cfg\n", __FUNCTION__));
goto exit;
}
exit:
return err;
}
static int
_dhd_pno_reinitialize_prof(dhd_pub_t *dhd, dhd_pno_params_t *params, dhd_pno_mode_t mode)
{
int err = BCME_OK;
dhd_pno_status_info_t *_pno_state;
NULL_CHECK(dhd, "dhd is NULL\n", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL\n", err);
DHD_PNO(("%s enter\n", __FUNCTION__));
_pno_state = PNO_GET_PNOSTATE(dhd);
mutex_lock(&_pno_state->pno_mutex);
switch (mode) {
case DHD_PNO_LEGACY_MODE: {
struct dhd_pno_ssid *iter, *next;
if (params->params_legacy.nssid > 0) {
list_for_each_entry_safe(iter, next,
&params->params_legacy.ssid_list, list) {
list_del(&iter->list);
kfree(iter);
}
}
params->params_legacy.nssid = 0;
params->params_legacy.scan_fr = 0;
params->params_legacy.pno_freq_expo_max = 0;
params->params_legacy.pno_repeat = 0;
params->params_legacy.nchan = 0;
memset(params->params_legacy.chan_list, 0,
sizeof(params->params_legacy.chan_list));
break;
}
case DHD_PNO_BATCH_MODE: {
params->params_batch.scan_fr = 0;
params->params_batch.mscan = 0;
params->params_batch.nchan = 0;
params->params_batch.rtt = 0;
params->params_batch.bestn = 0;
params->params_batch.nchan = 0;
params->params_batch.band = WLC_BAND_AUTO;
memset(params->params_batch.chan_list, 0,
sizeof(params->params_batch.chan_list));
params->params_batch.get_batch.batch_started = FALSE;
params->params_batch.get_batch.buf = NULL;
params->params_batch.get_batch.bufsize = 0;
params->params_batch.get_batch.reason = 0;
_dhd_pno_clear_all_batch_results(dhd,
&params->params_batch.get_batch.scan_results_list, FALSE);
_dhd_pno_clear_all_batch_results(dhd,
&params->params_batch.get_batch.expired_scan_results_list, FALSE);
params->params_batch.get_batch.tot_scan_cnt = 0;
params->params_batch.get_batch.expired_tot_scan_cnt = 0;
params->params_batch.get_batch.top_node_cnt = 0;
INIT_LIST_HEAD(&params->params_batch.get_batch.scan_results_list);
INIT_LIST_HEAD(&params->params_batch.get_batch.expired_scan_results_list);
break;
}
case DHD_PNO_HOTLIST_MODE: {
struct dhd_pno_bssid *iter, *next;
if (params->params_hotlist.nbssid > 0) {
list_for_each_entry_safe(iter, next,
&params->params_hotlist.bssid_list, list) {
list_del(&iter->list);
kfree(iter);
}
}
params->params_hotlist.scan_fr = 0;
params->params_hotlist.nbssid = 0;
params->params_hotlist.nchan = 0;
params->params_batch.band = WLC_BAND_AUTO;
memset(params->params_hotlist.chan_list, 0,
sizeof(params->params_hotlist.chan_list));
break;
}
default:
DHD_ERROR(("%s : unknown mode : %d\n", __FUNCTION__, mode));
break;
}
mutex_unlock(&_pno_state->pno_mutex);
return err;
}
static int
_dhd_pno_add_bssid(dhd_pub_t *dhd, wl_pfn_bssid_t *p_pfn_bssid, int nbssid)
{
int err = BCME_OK;
NULL_CHECK(dhd, "dhd is NULL", err);
if (nbssid) {
NULL_CHECK(p_pfn_bssid, "bssid list is NULL", err);
}
err = dhd_iovar(dhd, 0, "pfn_add_bssid", (char *)p_pfn_bssid,
sizeof(wl_pfn_bssid_t) * nbssid, NULL, 0, TRUE);
if (err < 0) {
DHD_ERROR(("%s : failed to execute pfn_cfg\n", __FUNCTION__));
goto exit;
}
exit:
return err;
}
int
dhd_pno_stop_for_ssid(dhd_pub_t *dhd)
{
int err = BCME_OK;
uint32 mode = 0;
dhd_pno_status_info_t *_pno_state;
dhd_pno_params_t *_params;
wl_pfn_bssid_t *p_pfn_bssid = NULL;
NULL_CHECK(dhd, "dev is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
_pno_state = PNO_GET_PNOSTATE(dhd);
if (!(_pno_state->pno_mode & DHD_PNO_LEGACY_MODE)) {
DHD_ERROR(("%s : LEGACY PNO MODE is not enabled\n", __FUNCTION__));
goto exit;
}
DHD_PNO(("%s enter\n", __FUNCTION__));
_pno_state->pno_mode &= ~DHD_PNO_LEGACY_MODE;
/* restart Batch mode if the batch mode is on */
if (_pno_state->pno_mode & (DHD_PNO_BATCH_MODE | DHD_PNO_HOTLIST_MODE)) {
/* retrieve the batching data from firmware into host */
dhd_pno_get_for_batch(dhd, NULL, 0, PNO_STATUS_DISABLE);
/* save current pno_mode before calling dhd_pno_clean */
mode = _pno_state->pno_mode;
dhd_pno_clean(dhd);
/* restore previous pno_mode */
_pno_state->pno_mode = mode;
if (_pno_state->pno_mode & DHD_PNO_BATCH_MODE) {
_params = &(_pno_state->pno_params_arr[INDEX_OF_BATCH_PARAMS]);
/* restart BATCH SCAN */
err = dhd_pno_set_for_batch(dhd, &_params->params_batch);
if (err < 0) {
_pno_state->pno_mode &= ~DHD_PNO_BATCH_MODE;
DHD_ERROR(("%s : failed to restart batch scan(err: %d)\n",
__FUNCTION__, err));
goto exit;
}
} else if (_pno_state->pno_mode & DHD_PNO_HOTLIST_MODE) {
/* restart HOTLIST SCAN */
struct dhd_pno_bssid *iter, *next;
_params = &(_pno_state->pno_params_arr[INDEX_OF_HOTLIST_PARAMS]);
p_pfn_bssid = kzalloc(sizeof(wl_pfn_bssid_t) *
_params->params_hotlist.nbssid, GFP_KERNEL);
if (p_pfn_bssid == NULL) {
DHD_ERROR(("%s : failed to allocate wl_pfn_bssid_t array"
" (count: %d)",
__FUNCTION__, _params->params_hotlist.nbssid));
err = BCME_ERROR;
_pno_state->pno_mode &= ~DHD_PNO_HOTLIST_MODE;
goto exit;
}
/* convert dhd_pno_bssid to wl_pfn_bssid */
list_for_each_entry_safe(iter, next,
&_params->params_hotlist.bssid_list, list) {
memcpy(&p_pfn_bssid->macaddr,
&iter->macaddr, ETHER_ADDR_LEN);
p_pfn_bssid->flags = iter->flags;
p_pfn_bssid++;
}
err = dhd_pno_set_for_hotlist(dhd, p_pfn_bssid, &_params->params_hotlist);
if (err < 0) {
_pno_state->pno_mode &= ~DHD_PNO_HOTLIST_MODE;
DHD_ERROR(("%s : failed to restart hotlist scan(err: %d)\n",
__FUNCTION__, err));
goto exit;
}
}
} else {
err = dhd_pno_clean(dhd);
if (err < 0) {
DHD_ERROR(("%s : failed to call dhd_pno_clean (err: %d)\n",
__FUNCTION__, err));
goto exit;
}
}
exit:
kfree(p_pfn_bssid);
return err;
}
int
dhd_pno_enable(dhd_pub_t *dhd, int enable)
{
int err = BCME_OK;
NULL_CHECK(dhd, "dhd is NULL", err);
DHD_PNO(("%s enter\n", __FUNCTION__));
return (_dhd_pno_enable(dhd, enable));
}
int
dhd_pno_set_for_ssid(dhd_pub_t *dhd, wlc_ssid_t* ssid_list, int nssid,
uint16 scan_fr, int pno_repeat, int pno_freq_expo_max, uint16 *channel_list, int nchan)
{
struct dhd_pno_ssid *_pno_ssid;
dhd_pno_params_t *_params;
dhd_pno_params_t *_params2;
dhd_pno_status_info_t *_pno_state;
uint16 _chan_list[WL_NUMCHANNELS];
int32 tot_nchan = 0;
int err = BCME_OK;
int i;
int mode = 0;
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
_pno_state = PNO_GET_PNOSTATE(dhd);
if (!dhd_support_sta_mode(dhd)) {
err = BCME_BADOPTION;
goto exit;
}
DHD_PNO(("%s enter : scan_fr :%d, pno_repeat :%d,"
"pno_freq_expo_max: %d, nchan :%d\n", __FUNCTION__,
scan_fr, pno_repeat, pno_freq_expo_max, nchan));
_params = &(_pno_state->pno_params_arr[INDEX_OF_LEGACY_PARAMS]);
if (_pno_state->pno_mode & DHD_PNO_LEGACY_MODE) {
DHD_ERROR(("%s : Legacy PNO mode was already started, "
"will disable previous one to start new one\n", __FUNCTION__));
err = dhd_pno_stop_for_ssid(dhd);
if (err < 0) {
DHD_ERROR(("%s : failed to stop legacy PNO (err %d)\n",
__FUNCTION__, err));
goto exit;
}
}
_pno_state->pno_mode |= DHD_PNO_LEGACY_MODE;
err = _dhd_pno_reinitialize_prof(dhd, _params, DHD_PNO_LEGACY_MODE);
if (err < 0) {
DHD_ERROR(("%s : failed to reinitialize profile (err %d)\n",
__FUNCTION__, err));
goto exit;
}
memset(_chan_list, 0, sizeof(_chan_list));
tot_nchan = nchan;
if (tot_nchan > 0 && channel_list) {
for (i = 0; i < nchan; i++)
_params->params_legacy.chan_list[i] = _chan_list[i] = channel_list[i];
}
if (_pno_state->pno_mode & (DHD_PNO_BATCH_MODE | DHD_PNO_HOTLIST_MODE)) {
DHD_PNO(("BATCH SCAN is on progress in firmware\n"));
/* retrieve the batching data from firmware into host */
dhd_pno_get_for_batch(dhd, NULL, 0, PNO_STATUS_DISABLE);
/* store current pno_mode before disabling pno */
mode = _pno_state->pno_mode;
err = _dhd_pno_enable(dhd, PNO_OFF);
if (err < 0) {
DHD_ERROR(("%s : failed to disable PNO\n", __FUNCTION__));
goto exit;
}
/* restore the previous mode */
_pno_state->pno_mode = mode;
/* use superset of channel list between two mode */
if (_pno_state->pno_mode & DHD_PNO_BATCH_MODE) {
_params2 = &(_pno_state->pno_params_arr[INDEX_OF_BATCH_PARAMS]);
if (_params2->params_batch.nchan > 0 && nchan > 0) {
err = _dhd_pno_chan_merge(_chan_list, &tot_nchan,
&_params2->params_batch.chan_list[0],
_params2->params_batch.nchan,
&channel_list[0], nchan);
if (err < 0) {
DHD_ERROR(("%s : failed to merge channel list"
" between legacy and batch\n",
__FUNCTION__));
goto exit;
}
} else {
DHD_PNO(("superset channel will use"
" all channels in firmware\n"));
}
} else if (_pno_state->pno_mode & DHD_PNO_HOTLIST_MODE) {
_params2 = &(_pno_state->pno_params_arr[INDEX_OF_HOTLIST_PARAMS]);
if (_params2->params_hotlist.nchan > 0 && nchan > 0) {
err = _dhd_pno_chan_merge(_chan_list, &tot_nchan,
&_params2->params_hotlist.chan_list[0],
_params2->params_hotlist.nchan,
&channel_list[0], nchan);
if (err < 0) {
DHD_ERROR(("%s : failed to merge channel list"
" between legacy and hotlist\n",
__FUNCTION__));
goto exit;
}
}
}
}
_params->params_legacy.scan_fr = scan_fr;
_params->params_legacy.pno_repeat = pno_repeat;
_params->params_legacy.pno_freq_expo_max = pno_freq_expo_max;
_params->params_legacy.nchan = nchan;
_params->params_legacy.nssid = nssid;
INIT_LIST_HEAD(&_params->params_legacy.ssid_list);
if ((err = _dhd_pno_set(dhd, _params, DHD_PNO_LEGACY_MODE)) < 0) {
DHD_ERROR(("failed to set call pno_set (err %d) in firmware\n", err));
goto exit;
}
if ((err = _dhd_pno_add_ssid(dhd, ssid_list, nssid)) < 0) {
DHD_ERROR(("failed to add ssid list(err %d), %d in firmware\n", err, nssid));
goto exit;
}
for (i = 0; i < nssid; i++) {
_pno_ssid = kzalloc(sizeof(struct dhd_pno_ssid), GFP_KERNEL);
if (_pno_ssid == NULL) {
DHD_ERROR(("%s : failed to allocate struct dhd_pno_ssid\n",
__FUNCTION__));
goto exit;
}
_pno_ssid->SSID_len = ssid_list[i].SSID_len;
memcpy(_pno_ssid->SSID, ssid_list[i].SSID, _pno_ssid->SSID_len);
list_add_tail(&_pno_ssid->list, &_params->params_legacy.ssid_list);
}
if (tot_nchan > 0) {
if ((err = _dhd_pno_cfg(dhd, _chan_list, tot_nchan)) < 0) {
DHD_ERROR(("%s : failed to set call pno_cfg (err %d) in firmware\n",
__FUNCTION__, err));
goto exit;
}
}
if (_pno_state->pno_status == DHD_PNO_DISABLED) {
if ((err = _dhd_pno_enable(dhd, PNO_ON)) < 0)
DHD_ERROR(("%s : failed to enable PNO\n", __FUNCTION__));
}
exit:
/* clear mode in case of error */
if (err < 0)
_pno_state->pno_mode &= ~DHD_PNO_LEGACY_MODE;
return err;
}
int
dhd_pno_set_for_batch(dhd_pub_t *dhd, struct dhd_pno_batch_params *batch_params)
{
int err = BCME_OK;
uint16 _chan_list[WL_NUMCHANNELS];
int rem_nchan = 0, tot_nchan = 0;
int mode = 0, mscan = 0;
int i = 0;
dhd_pno_params_t *_params;
dhd_pno_params_t *_params2;
dhd_pno_status_info_t *_pno_state;
wlc_ssid_t *p_ssid_list = NULL;
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
NULL_CHECK(batch_params, "batch_params is NULL", err);
_pno_state = PNO_GET_PNOSTATE(dhd);
DHD_PNO(("%s enter\n", __FUNCTION__));
if (!dhd_support_sta_mode(dhd)) {
err = BCME_BADOPTION;
goto exit;
}
if (!WLS_SUPPORTED(_pno_state)) {
DHD_ERROR(("%s : wifi location service is not supported\n", __FUNCTION__));
err = BCME_UNSUPPORTED;
goto exit;
}
_params = &_pno_state->pno_params_arr[INDEX_OF_BATCH_PARAMS];
if (!(_pno_state->pno_mode & DHD_PNO_BATCH_MODE)) {
_pno_state->pno_mode |= DHD_PNO_BATCH_MODE;
err = _dhd_pno_reinitialize_prof(dhd, _params, DHD_PNO_BATCH_MODE);
if (err < 0) {
DHD_ERROR(("%s : failed to call _dhd_pno_reinitialize_prof\n",
__FUNCTION__));
goto exit;
}
} else {
/* batch mode is already started */
return -EBUSY;
}
_params->params_batch.scan_fr = batch_params->scan_fr;
_params->params_batch.bestn = batch_params->bestn;
_params->params_batch.mscan = (batch_params->mscan)?
batch_params->mscan : DEFAULT_BATCH_MSCAN;
_params->params_batch.nchan = batch_params->nchan;
memcpy(_params->params_batch.chan_list, batch_params->chan_list,
sizeof(_params->params_batch.chan_list));
memset(_chan_list, 0, sizeof(_chan_list));
rem_nchan = ARRAYSIZE(batch_params->chan_list) - batch_params->nchan;
if (batch_params->band == WLC_BAND_2G || batch_params->band == WLC_BAND_5G) {
/* get a valid channel list based on band B or A */
err = _dhd_pno_get_channels(dhd,
&_params->params_batch.chan_list[batch_params->nchan],
&rem_nchan, batch_params->band, FALSE);
if (err < 0) {
DHD_ERROR(("%s: failed to get valid channel list(band : %d)\n",
__FUNCTION__, batch_params->band));
goto exit;
}
/* now we need to update nchan because rem_chan has valid channel count */
_params->params_batch.nchan += rem_nchan;
/* need to sort channel list */
sort(_params->params_batch.chan_list, _params->params_batch.nchan,
sizeof(_params->params_batch.chan_list[0]), _dhd_pno_cmpfunc, NULL);
}
#ifdef PNO_DEBUG
{
DHD_PNO(("Channel list : "));
for (i = 0; i < _params->params_batch.nchan; i++) {
DHD_PNO(("%d ", _params->params_batch.chan_list[i]));
}
DHD_PNO(("\n"));
}
#endif
if (_params->params_batch.nchan) {
/* copy the channel list into local array */
memcpy(_chan_list, _params->params_batch.chan_list, sizeof(_chan_list));
tot_nchan = _params->params_batch.nchan;
}
if (_pno_state->pno_mode & DHD_PNO_LEGACY_MODE) {
struct dhd_pno_ssid *iter, *next;
DHD_PNO(("PNO SSID is on progress in firmware\n"));
/* store current pno_mode before disabling pno */
mode = _pno_state->pno_mode;
err = _dhd_pno_enable(dhd, PNO_OFF);
if (err < 0) {
DHD_ERROR(("%s : failed to disable PNO\n", __FUNCTION__));
goto exit;
}
/* restore the previous mode */
_pno_state->pno_mode = mode;
/* Use the superset for channelist between two mode */
_params2 = &(_pno_state->pno_params_arr[INDEX_OF_LEGACY_PARAMS]);
if (_params2->params_legacy.nchan > 0 && _params->params_batch.nchan > 0) {
err = _dhd_pno_chan_merge(_chan_list, &tot_nchan,
&_params2->params_legacy.chan_list[0],
_params2->params_legacy.nchan,
&_params->params_batch.chan_list[0], _params->params_batch.nchan);
if (err < 0) {
DHD_ERROR(("%s : failed to merge channel list"
" between legacy and batch\n",
__FUNCTION__));
goto exit;
}
} else {
DHD_PNO(("superset channel will use all channels in firmware\n"));
}
p_ssid_list = kzalloc(sizeof(wlc_ssid_t) *
_params2->params_legacy.nssid, GFP_KERNEL);
if (p_ssid_list == NULL) {
DHD_ERROR(("%s : failed to allocate wlc_ssid_t array (count: %d)",
__FUNCTION__, _params2->params_legacy.nssid));
err = BCME_ERROR;
_pno_state->pno_mode &= ~DHD_PNO_LEGACY_MODE;
goto exit;
}
i = 0;
/* convert dhd_pno_ssid to dhd_pno_ssid */
list_for_each_entry_safe(iter, next, &_params2->params_legacy.ssid_list, list) {
p_ssid_list[i].SSID_len = iter->SSID_len;
memcpy(p_ssid_list->SSID, iter->SSID, p_ssid_list[i].SSID_len);
i++;
}
if ((err = _dhd_pno_add_ssid(dhd, p_ssid_list,
_params2->params_legacy.nssid)) < 0) {
DHD_ERROR(("failed to add ssid list (err %d) in firmware\n", err));
goto exit;
}
}
if ((err = _dhd_pno_set(dhd, _params, DHD_PNO_BATCH_MODE)) < 0) {
DHD_ERROR(("%s : failed to set call pno_set (err %d) in firmware\n",
__FUNCTION__, err));
goto exit;
} else {
/* we need to return mscan */
mscan = err;
}
if (tot_nchan > 0) {
if ((err = _dhd_pno_cfg(dhd, _chan_list, tot_nchan)) < 0) {
DHD_ERROR(("%s : failed to set call pno_cfg (err %d) in firmware\n",
__FUNCTION__, err));
goto exit;
}
}
if (_pno_state->pno_status == DHD_PNO_DISABLED) {
if ((err = _dhd_pno_enable(dhd, PNO_ON)) < 0)
DHD_ERROR(("%s : failed to enable PNO\n", __FUNCTION__));
}
exit:
/* clear mode in case of error */
if (err < 0)
_pno_state->pno_mode &= ~DHD_PNO_BATCH_MODE;
else {
/* return #max scan firmware can do */
err = mscan;
}
if (p_ssid_list)
kfree(p_ssid_list);
return err;
}
#ifdef GSCAN_SUPPORT
static void *dhd_get_gscan_batch_results(dhd_pub_t *dhd, uint32 *len)
{
gscan_results_cache_t *iter, *results;
dhd_pno_status_info_t *_pno_state;
dhd_pno_params_t *_params;
uint16 num_scan_ids = 0, num_results = 0;
_pno_state = PNO_GET_PNOSTATE(dhd);
_params = &_pno_state->pno_params_arr[INDEX_OF_GSCAN_PARAMS];
iter = results = _params->params_gscan.gscan_batch_cache;
while (iter) {
num_results += iter->tot_count - iter->tot_consumed;
num_scan_ids++;
iter = iter->next;
}
*len = ((num_results << 16) | (num_scan_ids));
return results;
}
void * dhd_pno_get_gscan(dhd_pub_t *dhd, dhd_pno_gscan_cmd_cfg_t type,
void *info, uint32 *len)
{
void *ret = NULL;
dhd_pno_gscan_capabilities_t *ptr;
dhd_epno_params_t *epno_params;
dhd_pno_params_t *_params;
dhd_pno_status_info_t *_pno_state;
if (!dhd || !dhd->pno_state) {
DHD_ERROR(("NULL POINTER : %s\n", __FUNCTION__));
return NULL;
}
_pno_state = PNO_GET_PNOSTATE(dhd);
_params = &_pno_state->pno_params_arr[INDEX_OF_GSCAN_PARAMS];
if (!len) {
DHD_ERROR(("%s: len is NULL\n", __FUNCTION__));
return NULL;
}
switch (type) {
case DHD_PNO_GET_CAPABILITIES:
ptr = (dhd_pno_gscan_capabilities_t *)
kmalloc(sizeof(dhd_pno_gscan_capabilities_t), GFP_KERNEL);
if (!ptr)
break;
/* Hardcoding these values for now, need to get
* these values from FW, will change in a later check-in
*/
ptr->max_scan_cache_size = GSCAN_MAX_AP_CACHE;
ptr->max_scan_buckets = GSCAN_MAX_CH_BUCKETS;
ptr->max_ap_cache_per_scan = GSCAN_MAX_AP_CACHE_PER_SCAN;
ptr->max_rssi_sample_size = PFN_SWC_RSSI_WINDOW_MAX;
ptr->max_scan_reporting_threshold = 100;
ptr->max_hotlist_aps = PFN_HOTLIST_MAX_NUM_APS;
ptr->max_significant_wifi_change_aps = PFN_SWC_MAX_NUM_APS;
ptr->max_epno_ssid_crc32 = MAX_EPNO_SSID_NUM;
ptr->max_epno_hidden_ssid = MAX_EPNO_HIDDEN_SSID;
ptr->max_white_list_ssid = MAX_WHITELIST_SSID;
ret = (void *)ptr;
*len = sizeof(dhd_pno_gscan_capabilities_t);
break;
case DHD_PNO_GET_BATCH_RESULTS:
ret = dhd_get_gscan_batch_results(dhd, len);
break;
case DHD_PNO_GET_CHANNEL_LIST:
if (info) {
uint16 ch_list[WL_NUMCHANNELS];
uint32 *ptr, mem_needed, i;
int32 err, nchan = WL_NUMCHANNELS;
uint32 *gscan_band = (uint32 *) info;
uint8 band = 0;
/* No band specified?, nothing to do */
if ((*gscan_band & GSCAN_BAND_MASK) == 0) {
DHD_PNO(("No band specified\n"));
*len = 0;
break;
}
/* HAL and DHD use different bits for 2.4G and
* 5G in bitmap. Hence translating it here...
*/
if (*gscan_band & GSCAN_BG_BAND_MASK)
band |= WLC_BAND_2G;
if (*gscan_band & GSCAN_A_BAND_MASK)
band |= WLC_BAND_5G;
if (*gscan_band & GSCAN_ACTIVE_CHAN_MASK)
band |= WLC_BAND_ACTIVE;
err = _dhd_pno_get_channels(dhd, ch_list, &nchan,
(band & GSCAN_ABG_BAND_MASK) |
(band & GSCAN_ACTIVE_CHAN_MASK),
!(*gscan_band & GSCAN_DFS_MASK));
if (err < 0) {
DHD_ERROR(("%s: failed to get valid channel list\n",
__FUNCTION__));
*len = 0;
} else {
mem_needed = sizeof(uint32) * nchan;
ptr = (uint32 *) kmalloc(mem_needed, GFP_KERNEL);
if (!ptr) {
DHD_ERROR(("%s: Unable to malloc %d bytes\n",
__FUNCTION__, mem_needed));
break;
}
for (i = 0; i < nchan; i++) {
ptr[i] = wf_channel2mhz(ch_list[i],
(ch_list[i] <= CH_MAX_2G_CHANNEL?
WF_CHAN_FACTOR_2_4_G : WF_CHAN_FACTOR_5_G));
}
ret = ptr;
*len = mem_needed;
}
} else {
*len = 0;
DHD_ERROR(("%s: info buffer is NULL\n", __FUNCTION__));
}
break;
case DHD_PNO_GET_EPNO_SSID_ELEM:
if (_params->params_gscan.num_epno_ssid >=
(MAX_EPNO_SSID_NUM + MAX_EPNO_HIDDEN_SSID)) {
DHD_ERROR(("Excessive number of ePNO SSIDs programmed %d\n",
_params->params_gscan.num_epno_ssid));
return NULL;
}
if (!_params->params_gscan.num_epno_ssid)
INIT_LIST_HEAD(&_params->params_gscan.epno_ssid_list);
epno_params = kzalloc(sizeof(dhd_epno_params_t), GFP_KERNEL);
if (!epno_params) {
DHD_ERROR(("EPNO ssid: cannot alloc %zd bytes",
sizeof(dhd_epno_params_t)));
return NULL;
}
_params->params_gscan.num_epno_ssid++;
epno_params->index = DHD_EPNO_DEFAULT_INDEX;
list_add_tail(&epno_params->list, &_params->params_gscan.epno_ssid_list);
ret = epno_params;
default:
break;
}
return ret;
}
#endif /* GSCAN_SUPPORT */
static int
_dhd_pno_get_for_batch(dhd_pub_t *dhd, char *buf, int bufsize, int reason)
{
int err = BCME_OK;
int i, j;
uint32 timestamp = 0;
dhd_pno_params_t *_params = NULL;
dhd_pno_status_info_t *_pno_state = NULL;
wl_pfn_lscanresults_t *plbestnet = NULL;
wl_pfn_lnet_info_t *plnetinfo;
dhd_pno_bestnet_entry_t *pbestnet_entry;
dhd_pno_best_header_t *pbestnetheader = NULL;
dhd_pno_scan_results_t *pscan_results = NULL, *siter, *snext;
bool allocate_header = FALSE;
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
if (!dhd_support_sta_mode(dhd)) {
err = BCME_BADOPTION;
goto exit;
}
DHD_PNO(("%s enter\n", __FUNCTION__));
_pno_state = PNO_GET_PNOSTATE(dhd);
if (!WLS_SUPPORTED(_pno_state)) {
DHD_ERROR(("%s : wifi location service is not supported\n", __FUNCTION__));
err = BCME_UNSUPPORTED;
goto exit;
}
if (!(_pno_state->pno_mode & DHD_PNO_BATCH_MODE)) {
DHD_ERROR(("%s: Batching SCAN mode is not enabled\n", __FUNCTION__));
goto exit;
}
mutex_lock(&_pno_state->pno_mutex);
_params = &_pno_state->pno_params_arr[INDEX_OF_BATCH_PARAMS];
if (buf && bufsize) {
if (!list_empty(&_params->params_batch.get_batch.expired_scan_results_list)) {
/* need to check whether we have cashed data or not */
DHD_PNO(("%s: have cashed batching data in Driver\n",
__FUNCTION__));
/* convert to results format */
goto convert_format;
} else {
/* this is a first try to get batching results */
if (!list_empty(&_params->params_batch.get_batch.scan_results_list)) {
/* move the scan_results_list to expired_scan_results_lists */
list_for_each_entry_safe(siter, snext,
&_params->params_batch.get_batch.scan_results_list, list) {
list_move_tail(&siter->list,
&_params->params_batch.get_batch.expired_scan_results_list);
}
_params->params_batch.get_batch.top_node_cnt = 0;
_params->params_batch.get_batch.expired_tot_scan_cnt =
_params->params_batch.get_batch.tot_scan_cnt;
_params->params_batch.get_batch.tot_scan_cnt = 0;
goto convert_format;
}
}
}
/* create dhd_pno_scan_results_t whenever we got event WLC_E_PFN_BEST_BATCHING */
pscan_results = (dhd_pno_scan_results_t *)MALLOC(dhd->osh, SCAN_RESULTS_SIZE);
if (pscan_results == NULL) {
err = BCME_NOMEM;
DHD_ERROR(("failed to allocate dhd_pno_scan_results_t\n"));
goto exit;
}
pscan_results->bestnetheader = NULL;
pscan_results->cnt_header = 0;
/* add the element into list unless total node cnt is less than MAX_NODE_ CNT */
if (_params->params_batch.get_batch.top_node_cnt < MAX_NODE_CNT) {
list_add(&pscan_results->list, &_params->params_batch.get_batch.scan_results_list);
_params->params_batch.get_batch.top_node_cnt++;
} else {
int _removed_scan_cnt;
/* remove oldest one and add new one */
DHD_PNO(("%s : Remove oldest node and add new one\n", __FUNCTION__));
_removed_scan_cnt = _dhd_pno_clear_all_batch_results(dhd,
&_params->params_batch.get_batch.scan_results_list, TRUE);
_params->params_batch.get_batch.tot_scan_cnt -= _removed_scan_cnt;
list_add(&pscan_results->list, &_params->params_batch.get_batch.scan_results_list);
}
plbestnet = (wl_pfn_lscanresults_t *)MALLOC(dhd->osh, PNO_BESTNET_LEN);
NULL_CHECK(plbestnet, "failed to allocate buffer for bestnet", err);
DHD_PNO(("%s enter\n", __FUNCTION__));
memset(plbestnet, 0, PNO_BESTNET_LEN);
while (plbestnet->status != PFN_COMPLETE) {
memset(plbestnet, 0, PNO_BESTNET_LEN);
err = dhd_iovar(dhd, 0, "pfnlbest", NULL, 0,
(char *)plbestnet, PNO_BESTNET_LEN, FALSE);
if (err < 0) {
if (err == BCME_EPERM) {
DHD_ERROR(("we cannot get the batching data "
"during scanning in firmware, try again\n,"));
msleep(500);
continue;
} else {
DHD_ERROR(("%s : failed to execute pfnlbest (err :%d)\n",
__FUNCTION__, err));
goto exit;
}
}
DHD_PNO(("ver %d, status : %d, count %d\n", plbestnet->version,
plbestnet->status, plbestnet->count));
if (plbestnet->version != PFN_SCANRESULT_VERSION) {
err = BCME_VERSION;
DHD_ERROR(("bestnet version(%d) is mismatch with Driver version(%d)\n",
plbestnet->version, PFN_SCANRESULT_VERSION));
goto exit;
}
plnetinfo = plbestnet->netinfo;
for (i = 0; i < plbestnet->count; i++) {
pbestnet_entry = (dhd_pno_bestnet_entry_t *)
MALLOC(dhd->osh, BESTNET_ENTRY_SIZE);
if (pbestnet_entry == NULL) {
err = BCME_NOMEM;
DHD_ERROR(("failed to allocate dhd_pno_bestnet_entry\n"));
goto exit;
}
memset(pbestnet_entry, 0, BESTNET_ENTRY_SIZE);
pbestnet_entry->recorded_time = jiffies; /* record the current time */
/* create header for the first entry */
allocate_header = (i == 0)? TRUE : FALSE;
/* check whether the new generation is started or not */
if (timestamp && (TIME_DIFF(timestamp, plnetinfo->timestamp)
> TIME_MIN_DIFF))
allocate_header = TRUE;
timestamp = plnetinfo->timestamp;
if (allocate_header) {
pbestnetheader = (dhd_pno_best_header_t *)
MALLOC(dhd->osh, BEST_HEADER_SIZE);
if (pbestnetheader == NULL) {
err = BCME_NOMEM;
if (pbestnet_entry)
MFREE(dhd->osh, pbestnet_entry,
BESTNET_ENTRY_SIZE);
DHD_ERROR(("failed to allocate dhd_pno_bestnet_entry\n"));
goto exit;
}
/* increase total cnt of bestnet header */
pscan_results->cnt_header++;
/* need to record the reason to call dhd_pno_get_for_bach */
if (reason)
pbestnetheader->reason = (ENABLE << reason);
memset(pbestnetheader, 0, BEST_HEADER_SIZE);
/* initialize the head of linked list */
INIT_LIST_HEAD(&(pbestnetheader->entry_list));
/* link the pbestnet heaer into existed list */
if (pscan_results->bestnetheader == NULL)
/* In case of header */
pscan_results->bestnetheader = pbestnetheader;
else {
dhd_pno_best_header_t *head = pscan_results->bestnetheader;
pscan_results->bestnetheader = pbestnetheader;
pbestnetheader->next = head;
}
}
/* fills the best network info */
pbestnet_entry->channel = plnetinfo->pfnsubnet.channel;
pbestnet_entry->RSSI = plnetinfo->RSSI;
if (plnetinfo->flags & PFN_PARTIAL_SCAN_MASK) {
/* if RSSI is positive value, we assume that
* this scan is aborted by other scan
*/
DHD_PNO(("This scan is aborted\n"));
pbestnetheader->reason = (ENABLE << PNO_STATUS_ABORT);
}
pbestnet_entry->rtt0 = plnetinfo->rtt0;
pbestnet_entry->rtt1 = plnetinfo->rtt1;
pbestnet_entry->timestamp = plnetinfo->timestamp;
pbestnet_entry->SSID_len = plnetinfo->pfnsubnet.SSID_len;
memcpy(pbestnet_entry->SSID, plnetinfo->pfnsubnet.SSID,
pbestnet_entry->SSID_len);
memcpy(&pbestnet_entry->BSSID, &plnetinfo->pfnsubnet.BSSID, ETHER_ADDR_LEN);
/* add the element into list */
list_add_tail(&pbestnet_entry->list, &pbestnetheader->entry_list);
/* increase best entry count */
pbestnetheader->tot_cnt++;
pbestnetheader->tot_size += BESTNET_ENTRY_SIZE;
DHD_PNO(("Header %d\n", pscan_results->cnt_header - 1));
DHD_PNO(("\tSSID : "));
for (j = 0; j < plnetinfo->pfnsubnet.SSID_len; j++)
DHD_PNO(("%c", plnetinfo->pfnsubnet.SSID[j]));
DHD_PNO(("\n"));
DHD_PNO(("\tBSSID: %02x:%02x:%02x:%02x:%02x:%02x\n",
plnetinfo->pfnsubnet.BSSID.octet[0],
plnetinfo->pfnsubnet.BSSID.octet[1],
plnetinfo->pfnsubnet.BSSID.octet[2],
plnetinfo->pfnsubnet.BSSID.octet[3],
plnetinfo->pfnsubnet.BSSID.octet[4],
plnetinfo->pfnsubnet.BSSID.octet[5]));
DHD_PNO(("\tchannel: %d, RSSI: %d, timestamp: %d ms\n",
plnetinfo->pfnsubnet.channel,
plnetinfo->RSSI, plnetinfo->timestamp));
DHD_PNO(("\tRTT0 : %d, RTT1: %d\n", plnetinfo->rtt0, plnetinfo->rtt1));
plnetinfo++;
}
}
if (pscan_results->cnt_header == 0) {
/* In case that we didn't get any data from the firmware
* Remove the current scan_result list from get_bach.scan_results_list.
*/
DHD_PNO(("NO BATCH DATA from Firmware, Delete current SCAN RESULT LIST\n"));
list_del(&pscan_results->list);
MFREE(dhd->osh, pscan_results, SCAN_RESULTS_SIZE);
_params->params_batch.get_batch.top_node_cnt--;
} else {
/* increase total scan count using current scan count */
_params->params_batch.get_batch.tot_scan_cnt += pscan_results->cnt_header;
}
if (buf && bufsize) {
/* This is a first try to get batching results */
if (!list_empty(&_params->params_batch.get_batch.scan_results_list)) {
/* move the scan_results_list to expired_scan_results_lists */
list_for_each_entry_safe(siter, snext,
&_params->params_batch.get_batch.scan_results_list, list) {
list_move_tail(&siter->list,
&_params->params_batch.get_batch.expired_scan_results_list);
}
/* reset gloval values after moving to expired list */
_params->params_batch.get_batch.top_node_cnt = 0;
_params->params_batch.get_batch.expired_tot_scan_cnt =
_params->params_batch.get_batch.tot_scan_cnt;
_params->params_batch.get_batch.tot_scan_cnt = 0;
}
convert_format:
err = _dhd_pno_convert_format(dhd, &_params->params_batch, buf, bufsize);
if (err < 0) {
DHD_ERROR(("failed to convert the data into upper layer format\n"));
goto exit;
}
}
exit:
if (plbestnet)
MFREE(dhd->osh, plbestnet, PNO_BESTNET_LEN);
if (_params) {
_params->params_batch.get_batch.buf = NULL;
_params->params_batch.get_batch.bufsize = 0;
_params->params_batch.get_batch.bytes_written = err;
}
mutex_unlock(&_pno_state->pno_mutex);
#if IS_ENABLED(CONFIG_PREEMPT_RT_FULL)
if (swait_active(&_pno_state->get_batch_done.wait))
#else
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 57)
if (waitqueue_active((struct wait_queue_head *)&_pno_state->get_batch_done.wait))
#else
if (waitqueue_active(&_pno_state->get_batch_done.wait))
#endif
#endif
complete(&_pno_state->get_batch_done);
return err;
}
static void
_dhd_pno_get_batch_handler(struct work_struct *work)
{
dhd_pno_status_info_t *_pno_state;
dhd_pub_t *dhd;
struct dhd_pno_batch_params *params_batch;
DHD_PNO(("%s enter\n", __FUNCTION__));
_pno_state = container_of(work, struct dhd_pno_status_info, work);
dhd = _pno_state->dhd;
if (dhd == NULL) {
DHD_ERROR(("%s : dhd is NULL\n", __FUNCTION__));
return;
}
params_batch = &_pno_state->pno_params_arr[INDEX_OF_BATCH_PARAMS].params_batch;
_dhd_pno_get_for_batch(dhd, params_batch->get_batch.buf,
params_batch->get_batch.bufsize, params_batch->get_batch.reason);
}
int
dhd_pno_get_for_batch(dhd_pub_t *dhd, char *buf, int bufsize, int reason)
{
int err = BCME_OK;
char *pbuf = buf;
dhd_pno_status_info_t *_pno_state;
struct dhd_pno_batch_params *params_batch;
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
if (!dhd_support_sta_mode(dhd)) {
err = BCME_BADOPTION;
goto exit;
}
DHD_PNO(("%s enter\n", __FUNCTION__));
_pno_state = PNO_GET_PNOSTATE(dhd);
if (!WLS_SUPPORTED(_pno_state)) {
DHD_ERROR(("%s : wifi location service is not supported\n", __FUNCTION__));
err = BCME_UNSUPPORTED;
goto exit;
}
params_batch = &_pno_state->pno_params_arr[INDEX_OF_BATCH_PARAMS].params_batch;
if (!(_pno_state->pno_mode & DHD_PNO_BATCH_MODE)) {
DHD_ERROR(("%s: Batching SCAN mode is not enabled\n", __FUNCTION__));
memset(pbuf, 0, bufsize);
pbuf += sprintf(pbuf, "scancount=%d\n", 0);
sprintf(pbuf, "%s", RESULTS_END_MARKER);
err = strlen(buf);
goto exit;
}
params_batch->get_batch.buf = buf;
params_batch->get_batch.bufsize = bufsize;
params_batch->get_batch.reason = reason;
params_batch->get_batch.bytes_written = 0;
schedule_work(&_pno_state->work);
wait_for_completion(&_pno_state->get_batch_done);
err = params_batch->get_batch.bytes_written;
exit:
return err;
}
int
dhd_pno_stop_for_batch(dhd_pub_t *dhd)
{
int err = BCME_OK;
int mode = 0;
int i = 0;
dhd_pno_status_info_t *_pno_state;
dhd_pno_params_t *_params;
wl_pfn_bssid_t *p_pfn_bssid = NULL;
wlc_ssid_t *p_ssid_list = NULL;
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
_pno_state = PNO_GET_PNOSTATE(dhd);
DHD_PNO(("%s enter\n", __FUNCTION__));
if (!dhd_support_sta_mode(dhd)) {
err = BCME_BADOPTION;
goto exit;
}
if (!WLS_SUPPORTED(_pno_state)) {
DHD_ERROR(("%s : wifi location service is not supported\n",
__FUNCTION__));
err = BCME_UNSUPPORTED;
goto exit;
}
if (!(_pno_state->pno_mode & DHD_PNO_BATCH_MODE)) {
DHD_ERROR(("%s : PNO BATCH MODE is not enabled\n", __FUNCTION__));
goto exit;
}
_pno_state->pno_mode &= ~DHD_PNO_BATCH_MODE;
if (_pno_state->pno_mode & (DHD_PNO_LEGACY_MODE | DHD_PNO_HOTLIST_MODE)) {
mode = _pno_state->pno_mode;
dhd_pno_clean(dhd);
_pno_state->pno_mode = mode;
/* restart Legacy PNO if the Legacy PNO is on */
if (_pno_state->pno_mode & DHD_PNO_LEGACY_MODE) {
struct dhd_pno_legacy_params *_params_legacy;
struct dhd_pno_ssid *iter, *next;
_params_legacy =
&(_pno_state->pno_params_arr[INDEX_OF_LEGACY_PARAMS].params_legacy);
p_ssid_list = kzalloc(sizeof(wlc_ssid_t) *
_params_legacy->nssid, GFP_KERNEL);
if (p_ssid_list == NULL) {
DHD_ERROR(("%s : failed to allocate wlc_ssid_t array (count: %d)",
__FUNCTION__, _params_legacy->nssid));
err = BCME_ERROR;
_pno_state->pno_mode &= ~DHD_PNO_LEGACY_MODE;
goto exit;
}
i = 0;
/* convert dhd_pno_ssid to dhd_pno_ssid */
list_for_each_entry_safe(iter, next, &_params_legacy->ssid_list, list) {
p_ssid_list[i].SSID_len = iter->SSID_len;
memcpy(p_ssid_list[i].SSID, iter->SSID, p_ssid_list[i].SSID_len);
i++;
}
err = dhd_pno_set_for_ssid(dhd, p_ssid_list, _params_legacy->nssid,
_params_legacy->scan_fr, _params_legacy->pno_repeat,
_params_legacy->pno_freq_expo_max, _params_legacy->chan_list,
_params_legacy->nchan);
if (err < 0) {
_pno_state->pno_mode &= ~DHD_PNO_LEGACY_MODE;
DHD_ERROR(("%s : failed to restart legacy PNO scan(err: %d)\n",
__FUNCTION__, err));
goto exit;
}
} else if (_pno_state->pno_mode & DHD_PNO_HOTLIST_MODE) {
struct dhd_pno_bssid *iter, *next;
_params = &(_pno_state->pno_params_arr[INDEX_OF_HOTLIST_PARAMS]);
p_pfn_bssid = kzalloc(sizeof(wl_pfn_bssid_t) *
_params->params_hotlist.nbssid, GFP_KERNEL);
if (p_pfn_bssid == NULL) {
DHD_ERROR(("%s : failed to allocate wl_pfn_bssid_t array"
" (count: %d)",
__FUNCTION__, _params->params_hotlist.nbssid));
err = BCME_ERROR;
_pno_state->pno_mode &= ~DHD_PNO_HOTLIST_MODE;
goto exit;
}
i = 0;
/* convert dhd_pno_bssid to wl_pfn_bssid */
list_for_each_entry_safe(iter, next,
&_params->params_hotlist.bssid_list, list) {
memcpy(&p_pfn_bssid[i].macaddr, &iter->macaddr, ETHER_ADDR_LEN);
p_pfn_bssid[i].flags = iter->flags;
i++;
}
err = dhd_pno_set_for_hotlist(dhd, p_pfn_bssid, &_params->params_hotlist);
if (err < 0) {
_pno_state->pno_mode &= ~DHD_PNO_HOTLIST_MODE;
DHD_ERROR(("%s : failed to restart hotlist scan(err: %d)\n",
__FUNCTION__, err));
goto exit;
}
}
} else {
err = dhd_pno_clean(dhd);
if (err < 0) {
DHD_ERROR(("%s : failed to call dhd_pno_clean (err: %d)\n",
__FUNCTION__, err));
goto exit;
}
}
exit:
_params = &_pno_state->pno_params_arr[INDEX_OF_BATCH_PARAMS];
_dhd_pno_reinitialize_prof(dhd, _params, DHD_PNO_BATCH_MODE);
kfree(p_ssid_list);
kfree(p_pfn_bssid);
return err;
}
int
dhd_pno_set_for_hotlist(dhd_pub_t *dhd, wl_pfn_bssid_t *p_pfn_bssid,
struct dhd_pno_hotlist_params *hotlist_params)
{
int err = BCME_OK;
int i;
uint16 _chan_list[WL_NUMCHANNELS];
int rem_nchan = 0;
int tot_nchan = 0;
int mode = 0;
dhd_pno_params_t *_params;
dhd_pno_params_t *_params2;
struct dhd_pno_bssid *_pno_bssid;
dhd_pno_status_info_t *_pno_state;
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
NULL_CHECK(hotlist_params, "hotlist_params is NULL", err);
NULL_CHECK(p_pfn_bssid, "p_pfn_bssid is NULL", err);
_pno_state = PNO_GET_PNOSTATE(dhd);
DHD_PNO(("%s enter\n", __FUNCTION__));
if (!dhd_support_sta_mode(dhd)) {
err = BCME_BADOPTION;
goto exit;
}
if (!WLS_SUPPORTED(_pno_state)) {
DHD_ERROR(("%s : wifi location service is not supported\n", __FUNCTION__));
err = BCME_UNSUPPORTED;
goto exit;
}
_params = &_pno_state->pno_params_arr[INDEX_OF_HOTLIST_PARAMS];
if (!(_pno_state->pno_mode & DHD_PNO_HOTLIST_MODE)) {
_pno_state->pno_mode |= DHD_PNO_HOTLIST_MODE;
err = _dhd_pno_reinitialize_prof(dhd, _params, DHD_PNO_HOTLIST_MODE);
if (err < 0) {
DHD_ERROR(("%s : failed to call _dhd_pno_reinitialize_prof\n",
__FUNCTION__));
goto exit;
}
}
_params->params_batch.nchan = hotlist_params->nchan;
_params->params_batch.scan_fr = hotlist_params->scan_fr;
if (hotlist_params->nchan)
memcpy(_params->params_hotlist.chan_list, hotlist_params->chan_list,
sizeof(_params->params_hotlist.chan_list));
memset(_chan_list, 0, sizeof(_chan_list));
rem_nchan = ARRAYSIZE(hotlist_params->chan_list) - hotlist_params->nchan;
if (hotlist_params->band == WLC_BAND_2G || hotlist_params->band == WLC_BAND_5G) {
/* get a valid channel list based on band B or A */
err = _dhd_pno_get_channels(dhd,
&_params->params_hotlist.chan_list[hotlist_params->nchan],
&rem_nchan, hotlist_params->band, FALSE);
if (err < 0) {
DHD_ERROR(("%s: failed to get valid channel list(band : %d)\n",
__FUNCTION__, hotlist_params->band));
goto exit;
}
/* now we need to update nchan because rem_chan has valid channel count */
_params->params_hotlist.nchan += rem_nchan;
/* need to sort channel list */
sort(_params->params_hotlist.chan_list, _params->params_hotlist.nchan,
sizeof(_params->params_hotlist.chan_list[0]), _dhd_pno_cmpfunc, NULL);
}
#ifdef PNO_DEBUG
{
int i;
DHD_PNO(("Channel list : "));
for (i = 0; i < _params->params_batch.nchan; i++) {
DHD_PNO(("%d ", _params->params_batch.chan_list[i]));
}
DHD_PNO(("\n"));
}
#endif
if (_params->params_hotlist.nchan) {
/* copy the channel list into local array */
memcpy(_chan_list, _params->params_hotlist.chan_list,
sizeof(_chan_list));
tot_nchan = _params->params_hotlist.nchan;
}
if (_pno_state->pno_mode & DHD_PNO_LEGACY_MODE) {
DHD_PNO(("PNO SSID is on progress in firmware\n"));
/* store current pno_mode before disabling pno */
mode = _pno_state->pno_mode;
err = _dhd_pno_enable(dhd, PNO_OFF);
if (err < 0) {
DHD_ERROR(("%s : failed to disable PNO\n", __FUNCTION__));
goto exit;
}
/* restore the previous mode */
_pno_state->pno_mode = mode;
/* Use the superset for channelist between two mode */
_params2 = &(_pno_state->pno_params_arr[INDEX_OF_LEGACY_PARAMS]);
if (_params2->params_legacy.nchan > 0 &&
_params->params_hotlist.nchan > 0) {
err = _dhd_pno_chan_merge(_chan_list, &tot_nchan,
&_params2->params_legacy.chan_list[0],
_params2->params_legacy.nchan,
&_params->params_hotlist.chan_list[0],
_params->params_hotlist.nchan);
if (err < 0) {
DHD_ERROR(("%s : failed to merge channel list"
"between legacy and hotlist\n",
__FUNCTION__));
goto exit;
}
}
}
INIT_LIST_HEAD(&(_params->params_hotlist.bssid_list));
err = _dhd_pno_add_bssid(dhd, p_pfn_bssid, hotlist_params->nbssid);
if (err < 0) {
DHD_ERROR(("%s : failed to call _dhd_pno_add_bssid(err :%d)\n",
__FUNCTION__, err));
goto exit;
}
if ((err = _dhd_pno_set(dhd, _params, DHD_PNO_HOTLIST_MODE)) < 0) {
DHD_ERROR(("%s : failed to set call pno_set (err %d) in firmware\n",
__FUNCTION__, err));
goto exit;
}
if (tot_nchan > 0) {
if ((err = _dhd_pno_cfg(dhd, _chan_list, tot_nchan)) < 0) {
DHD_ERROR(("%s : failed to set call pno_cfg (err %d) in firmware\n",
__FUNCTION__, err));
goto exit;
}
}
for (i = 0; i < hotlist_params->nbssid; i++) {
_pno_bssid = kzalloc(sizeof(struct dhd_pno_bssid), GFP_KERNEL);
NULL_CHECK(_pno_bssid, "_pfn_bssid is NULL", err);
memcpy(&_pno_bssid->macaddr, &p_pfn_bssid[i].macaddr, ETHER_ADDR_LEN);
_pno_bssid->flags = p_pfn_bssid[i].flags;
list_add_tail(&_pno_bssid->list, &_params->params_hotlist.bssid_list);
}
_params->params_hotlist.nbssid = hotlist_params->nbssid;
if (_pno_state->pno_status == DHD_PNO_DISABLED) {
if ((err = _dhd_pno_enable(dhd, PNO_ON)) < 0)
DHD_ERROR(("%s : failed to enable PNO\n", __FUNCTION__));
}
exit:
/* clear mode in case of error */
if (err < 0)
_pno_state->pno_mode &= ~DHD_PNO_HOTLIST_MODE;
return err;
}
int
dhd_pno_stop_for_hotlist(dhd_pub_t *dhd)
{
int err = BCME_OK;
uint32 mode = 0;
dhd_pno_status_info_t *_pno_state;
dhd_pno_params_t *_params;
wlc_ssid_t *p_ssid_list = NULL;
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
_pno_state = PNO_GET_PNOSTATE(dhd);
if (!WLS_SUPPORTED(_pno_state)) {
DHD_ERROR(("%s : wifi location service is not supported\n",
__FUNCTION__));
err = BCME_UNSUPPORTED;
goto exit;
}
if (!(_pno_state->pno_mode & DHD_PNO_HOTLIST_MODE)) {
DHD_ERROR(("%s : Hotlist MODE is not enabled\n",
__FUNCTION__));
goto exit;
}
_pno_state->pno_mode &= ~DHD_PNO_BATCH_MODE;
if (_pno_state->pno_mode & (DHD_PNO_LEGACY_MODE | DHD_PNO_BATCH_MODE)) {
/* retrieve the batching data from firmware into host */
dhd_pno_get_for_batch(dhd, NULL, 0, PNO_STATUS_DISABLE);
/* save current pno_mode before calling dhd_pno_clean */
mode = _pno_state->pno_mode;
err = dhd_pno_clean(dhd);
if (err < 0) {
DHD_ERROR(("%s : failed to call dhd_pno_clean (err: %d)\n",
__FUNCTION__, err));
goto exit;
}
/* restore previos pno mode */
_pno_state->pno_mode = mode;
if (_pno_state->pno_mode & DHD_PNO_LEGACY_MODE) {
/* restart Legacy PNO Scan */
struct dhd_pno_legacy_params *_params_legacy;
struct dhd_pno_ssid *iter, *next;
_params_legacy =
&(_pno_state->pno_params_arr[INDEX_OF_LEGACY_PARAMS].params_legacy);
p_ssid_list =
kzalloc(sizeof(wlc_ssid_t) * _params_legacy->nssid, GFP_KERNEL);
if (p_ssid_list == NULL) {
DHD_ERROR(("%s : failed to allocate wlc_ssid_t array (count: %d)",
__FUNCTION__, _params_legacy->nssid));
err = BCME_ERROR;
_pno_state->pno_mode &= ~DHD_PNO_LEGACY_MODE;
goto exit;
}
/* convert dhd_pno_ssid to dhd_pno_ssid */
list_for_each_entry_safe(iter, next, &_params_legacy->ssid_list, list) {
p_ssid_list->SSID_len = iter->SSID_len;
memcpy(p_ssid_list->SSID, iter->SSID, p_ssid_list->SSID_len);
p_ssid_list++;
}
err = dhd_pno_set_for_ssid(dhd, p_ssid_list, _params_legacy->nssid,
_params_legacy->scan_fr, _params_legacy->pno_repeat,
_params_legacy->pno_freq_expo_max, _params_legacy->chan_list,
_params_legacy->nchan);
if (err < 0) {
_pno_state->pno_mode &= ~DHD_PNO_LEGACY_MODE;
DHD_ERROR(("%s : failed to restart legacy PNO scan(err: %d)\n",
__FUNCTION__, err));
goto exit;
}
} else if (_pno_state->pno_mode & DHD_PNO_BATCH_MODE) {
/* restart Batching Scan */
_params = &(_pno_state->pno_params_arr[INDEX_OF_BATCH_PARAMS]);
/* restart BATCH SCAN */
err = dhd_pno_set_for_batch(dhd, &_params->params_batch);
if (err < 0) {
_pno_state->pno_mode &= ~DHD_PNO_BATCH_MODE;
DHD_ERROR(("%s : failed to restart batch scan(err: %d)\n",
__FUNCTION__, err));
goto exit;
}
}
} else {
err = dhd_pno_clean(dhd);
if (err < 0) {
DHD_ERROR(("%s : failed to call dhd_pno_clean (err: %d)\n",
__FUNCTION__, err));
goto exit;
}
}
exit:
kfree(p_ssid_list);
return err;
}
int
dhd_pno_event_handler(dhd_pub_t *dhd, wl_event_msg_t *event, void *event_data)
{
int err = BCME_OK;
uint status, event_type, flags, datalen;
dhd_pno_status_info_t *_pno_state;
NULL_CHECK(dhd, "dhd is NULL", err);
NULL_CHECK(dhd->pno_state, "pno_state is NULL", err);
_pno_state = PNO_GET_PNOSTATE(dhd);
if (!WLS_SUPPORTED(_pno_state)) {
DHD_ERROR(("%s : wifi location service is not supported\n", __FUNCTION__));
err = BCME_UNSUPPORTED;
goto exit;
}
event_type = ntoh32(event->event_type);
flags = ntoh16(event->flags);
status = ntoh32(event->status);
datalen = ntoh32(event->datalen);
DHD_PNO(("%s enter : event_type :%d\n", __FUNCTION__, event_type));
switch (event_type) {
case WLC_E_PFN_BSSID_NET_FOUND:
case WLC_E_PFN_BSSID_NET_LOST:
/* TODO : need to implement event logic using generic netlink */
break;
case WLC_E_PFN_BEST_BATCHING:
{
struct dhd_pno_batch_params *params_batch;
params_batch = &_pno_state->pno_params_arr[INDEX_OF_BATCH_PARAMS].params_batch;
#if IS_ENABLED(CONFIG_PREEMPT_RT_FULL)
if (!swait_active(&_pno_state->get_batch_done.wait)) {
#else
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 57)
if (!waitqueue_active((struct wait_queue_head *)&_pno_state->get_batch_done.wait)) {
#else
if (!waitqueue_active(&_pno_state->get_batch_done.wait)) {
#endif
#endif
DHD_PNO(("%s : WLC_E_PFN_BEST_BATCHING\n", __FUNCTION__));
params_batch->get_batch.buf = NULL;
params_batch->get_batch.bufsize = 0;
params_batch->get_batch.reason = PNO_STATUS_EVENT;
schedule_work(&_pno_state->work);
} else
DHD_PNO(("%s : WLC_E_PFN_BEST_BATCHING"
"will skip this event\n", __FUNCTION__));
break;
}
default:
DHD_ERROR(("unknown event : %d\n", event_type));
}
exit:
return err;
}
int dhd_pno_init(dhd_pub_t *dhd)
{
int err = BCME_OK;
dhd_pno_status_info_t *_pno_state;
char *buf = NULL;
NULL_CHECK(dhd, "dhd is NULL", err);
DHD_PNO(("%s enter\n", __FUNCTION__));
UNUSED_PARAMETER(_dhd_pno_suspend);
if (dhd->pno_state)
goto exit;
dhd->pno_state = MALLOC(dhd->osh, sizeof(dhd_pno_status_info_t));
NULL_CHECK(dhd->pno_state, "failed to create dhd_pno_state", err);
memset(dhd->pno_state, 0, sizeof(dhd_pno_status_info_t));
/* need to check whether current firmware support batching and hotlist scan */
_pno_state = PNO_GET_PNOSTATE(dhd);
_pno_state->wls_supported = TRUE;
_pno_state->dhd = dhd;
mutex_init(&_pno_state->pno_mutex);
INIT_WORK(&_pno_state->work, _dhd_pno_get_batch_handler);
init_completion(&_pno_state->get_batch_done);
buf = kzalloc(WLC_IOCTL_SMLEN, GFP_KERNEL);
if (!buf) {
DHD_ERROR((":%s buf alloc err.\n", __FUNCTION__));
return BCME_NOMEM;
}
err = dhd_iovar(dhd, 0, "pfnlbest", NULL, 0, buf, WLC_IOCTL_SMLEN,
FALSE);
if (err == BCME_UNSUPPORTED) {
_pno_state->wls_supported = FALSE;
DHD_INFO(("Current firmware doesn't support"
" Android Location Service\n"));
}
exit:
kfree(buf);
return err;
}
int dhd_pno_deinit(dhd_pub_t *dhd)
{
int err = BCME_OK;
dhd_pno_status_info_t *_pno_state;
dhd_pno_params_t *_params;
NULL_CHECK(dhd, "dhd is NULL", err);
DHD_PNO(("%s enter\n", __FUNCTION__));
_pno_state = PNO_GET_PNOSTATE(dhd);
NULL_CHECK(_pno_state, "pno_state is NULL", err);
/* may need to free legacy ssid_list */
if (_pno_state->pno_mode & DHD_PNO_LEGACY_MODE) {
_params = &_pno_state->pno_params_arr[INDEX_OF_LEGACY_PARAMS];
_dhd_pno_reinitialize_prof(dhd, _params, DHD_PNO_LEGACY_MODE);
}
if (_pno_state->pno_mode & DHD_PNO_BATCH_MODE) {
_params = &_pno_state->pno_params_arr[INDEX_OF_BATCH_PARAMS];
/* clear resource if the BATCH MODE is on */
_dhd_pno_reinitialize_prof(dhd, _params, DHD_PNO_BATCH_MODE);
}
cancel_work_sync(&_pno_state->work);
MFREE(dhd->osh, _pno_state, sizeof(dhd_pno_status_info_t));
dhd->pno_state = NULL;
return err;
}
#endif /* PNO_SUPPORT */