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android / kernel / amlogic-tv-modules / dhd-driver / refs/tags/android-tv-10.0.0_r0.1 / . / bcmdhd.100.10.315.x / wl_cfgscan.c
blob: dcaebe5d10b1df4b9dc2f45bb88de79ee1a5398b [file] [log] [blame]
/*
* Linux cfg80211 driver scan related code
*
* Copyright (C) 1999-2019, Broadcom.
*
* 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.
*
*
* <<Broadcom-WL-IPTag/Open:>>
*
* $Id$
*/
/* */
#include <typedefs.h>
#include <linuxver.h>
#include <osl.h>
#include <linux/kernel.h>
#include <bcmutils.h>
#include <bcmstdlib_s.h>
#include <bcmwifi_channels.h>
#include <bcmendian.h>
#include <ethernet.h>
#include <802.11.h>
#include <bcmiov.h>
#include <linux/if_arp.h>
#include <asm/uaccess.h>
#include <ethernet.h>
#include <linux/kernel.h>
#include <linux/kthread.h>
#include <linux/netdevice.h>
#include <linux/sched.h>
#include <linux/etherdevice.h>
#include <linux/wireless.h>
#include <linux/ieee80211.h>
#include <linux/wait.h>
#include <net/cfg80211.h>
#include <net/rtnetlink.h>
#include <wlioctl.h>
#include <bcmevent.h>
#include <wldev_common.h>
#include <wl_cfg80211.h>
#include <wl_cfgscan.h>
#include <wl_cfgp2p.h>
#include <bcmdevs.h>
#include <wl_android.h>
#include <dngl_stats.h>
#include <dhd.h>
#include <dhd_linux.h>
#include <dhd_debug.h>
#include <dhdioctl.h>
#include <wlioctl.h>
#include <dhd_cfg80211.h>
#include <dhd_bus.h>
#include <wl_cfgvendor.h>
#ifdef BCMPCIE
#include <dhd_flowring.h>
#endif // endif
#ifdef PNO_SUPPORT
#include <dhd_pno.h>
#endif /* PNO_SUPPORT */
#ifdef RTT_SUPPORT
#include "dhd_rtt.h"
#endif /* RTT_SUPPORT */
#include <dhd_config.h>
#define ACTIVE_SCAN 1
#define PASSIVE_SCAN 0
#define MIN_P2P_IE_LEN 8 /* p2p_ie->OUI(3) + p2p_ie->oui_type(1) +
* Attribute ID(1) + Length(2) + 1(Mininum length:1)
*/
#define MAX_P2P_IE_LEN 251 /* Up To 251 */
#define WPS_ATTR_REQ_TYPE 0x103a
#define WPS_REQ_TYPE_ENROLLEE 0x01
#if defined(USE_INITIAL_2G_SCAN) || defined(USE_INITIAL_SHORT_DWELL_TIME)
#define FIRST_SCAN_ACTIVE_DWELL_TIME_MS 40
bool g_first_broadcast_scan = TRUE;
#endif /* USE_INITIAL_2G_SCAN || USE_INITIAL_SHORT_DWELL_TIME */
#ifdef P2P_LISTEN_OFFLOADING
void wl_cfg80211_cancel_p2plo(struct bcm_cfg80211 *cfg);
#endif /* P2P_LISTEN_OFFLOADING */
static void _wl_notify_scan_done(struct bcm_cfg80211 *cfg, bool aborted);
extern int passive_channel_skip;
#ifdef WL11U
static bcm_tlv_t *
wl_cfg80211_find_interworking_ie(const u8 *parse, u32 len)
{
bcm_tlv_t *ie;
/* unfortunately it's too much work to dispose the const cast - bcm_parse_tlvs
* is used everywhere and changing its prototype to take const qualifier needs
* a massive change to all its callers...
*/
if ((ie = bcm_parse_tlvs(parse, len, DOT11_MNG_INTERWORKING_ID))) {
return ie;
}
return NULL;
}
static s32
wl_cfg80211_clear_iw_ie(struct bcm_cfg80211 *cfg, struct net_device *ndev, s32 bssidx)
{
ie_setbuf_t ie_setbuf;
WL_DBG(("clear interworking IE\n"));
bzero(&ie_setbuf, sizeof(ie_setbuf_t));
ie_setbuf.ie_buffer.iecount = htod32(1);
ie_setbuf.ie_buffer.ie_list[0].ie_data.id = DOT11_MNG_INTERWORKING_ID;
ie_setbuf.ie_buffer.ie_list[0].ie_data.len = 0;
return wldev_iovar_setbuf_bsscfg(ndev, "ie", &ie_setbuf, sizeof(ie_setbuf),
cfg->ioctl_buf, WLC_IOCTL_MAXLEN, bssidx, &cfg->ioctl_buf_sync);
}
static s32
wl_cfg80211_add_iw_ie(struct bcm_cfg80211 *cfg, struct net_device *ndev, s32 bssidx, s32 pktflag,
uint8 ie_id, uint8 *data, uint8 data_len)
{
s32 err = BCME_OK;
s32 buf_len;
ie_setbuf_t *ie_setbuf;
ie_getbuf_t ie_getbufp;
char getbuf[WLC_IOCTL_SMLEN];
if (ie_id != DOT11_MNG_INTERWORKING_ID) {
WL_ERR(("unsupported (id=%d)\n", ie_id));
return BCME_UNSUPPORTED;
}
/* access network options (1 octet) is the mandatory field */
if (!data || data_len == 0 || data_len > IW_IES_MAX_BUF_LEN) {
WL_ERR(("wrong interworking IE (len=%d)\n", data_len));
return BCME_BADARG;
}
/* Validate the pktflag parameter */
if ((pktflag & ~(VNDR_IE_BEACON_FLAG | VNDR_IE_PRBRSP_FLAG |
VNDR_IE_ASSOCRSP_FLAG | VNDR_IE_AUTHRSP_FLAG |
VNDR_IE_PRBREQ_FLAG | VNDR_IE_ASSOCREQ_FLAG|
VNDR_IE_CUSTOM_FLAG))) {
WL_ERR(("invalid packet flag 0x%x\n", pktflag));
return BCME_BADARG;
}
buf_len = sizeof(ie_setbuf_t) + data_len - 1;
ie_getbufp.id = DOT11_MNG_INTERWORKING_ID;
if (wldev_iovar_getbuf_bsscfg(ndev, "ie", (void *)&ie_getbufp,
sizeof(ie_getbufp), getbuf, WLC_IOCTL_SMLEN, bssidx, &cfg->ioctl_buf_sync)
== BCME_OK) {
if (!memcmp(&getbuf[TLV_HDR_LEN], data, data_len)) {
WL_DBG(("skip to set interworking IE\n"));
return BCME_OK;
}
}
/* if already set with previous values, delete it first */
if (cfg->wl11u) {
if ((err = wl_cfg80211_clear_iw_ie(cfg, ndev, bssidx)) != BCME_OK) {
return err;
}
}
ie_setbuf = (ie_setbuf_t *)MALLOCZ(cfg->osh, buf_len);
if (!ie_setbuf) {
WL_ERR(("Error allocating buffer for IE\n"));
return -ENOMEM;
}
strlcpy(ie_setbuf->cmd, "add", sizeof(ie_setbuf->cmd));
/* Buffer contains only 1 IE */
ie_setbuf->ie_buffer.iecount = htod32(1);
/* use VNDR_IE_CUSTOM_FLAG flags for none vendor IE . currently fixed value */
ie_setbuf->ie_buffer.ie_list[0].pktflag = htod32(pktflag);
/* Now, add the IE to the buffer */
ie_setbuf->ie_buffer.ie_list[0].ie_data.id = DOT11_MNG_INTERWORKING_ID;
ie_setbuf->ie_buffer.ie_list[0].ie_data.len = data_len;
/* Returning void here as max data_len can be 8 */
(void)memcpy_s((uchar *)&ie_setbuf->ie_buffer.ie_list[0].ie_data.data[0], sizeof(uint8),
data, data_len);
if ((err = wldev_iovar_setbuf_bsscfg(ndev, "ie", ie_setbuf, buf_len,
cfg->ioctl_buf, WLC_IOCTL_MAXLEN, bssidx, &cfg->ioctl_buf_sync))
== BCME_OK) {
WL_DBG(("set interworking IE\n"));
cfg->wl11u = TRUE;
err = wldev_iovar_setint_bsscfg(ndev, "grat_arp", 1, bssidx);
}
MFREE(cfg->osh, ie_setbuf, buf_len);
return err;
}
#endif /* WL11U */
#ifdef WL_BCNRECV
/* Beacon recv results handler sending to upper layer */
static s32
wl_bcnrecv_result_handler(struct bcm_cfg80211 *cfg, bcm_struct_cfgdev *cfgdev,
wl_bss_info_v109_2_t *bi, uint32 scan_status)
{
s32 err = BCME_OK;
struct wiphy *wiphy = NULL;
wl_bcnrecv_result_t *bcn_recv = NULL;
struct osl_timespec ts;
if (!bi) {
WL_ERR(("%s: bi is NULL\n", __func__));
err = BCME_NORESOURCE;
goto exit;
}
if ((bi->length - bi->ie_length) < sizeof(wl_bss_info_v109_2_t)) {
WL_ERR(("bi info version doesn't support bcn_recv attributes\n"));
goto exit;
}
if (scan_status == WLC_E_STATUS_RXBCN) {
wiphy = cfg->wdev->wiphy;
if (!wiphy) {
WL_ERR(("wiphy is NULL\n"));
err = BCME_NORESOURCE;
goto exit;
}
bcn_recv = (wl_bcnrecv_result_t *)MALLOCZ(cfg->osh, sizeof(*bcn_recv));
if (unlikely(!bcn_recv)) {
WL_ERR(("Failed to allocate memory\n"));
return -ENOMEM;
}
/* Returning void here as copy size does not exceed dest size of SSID */
(void)memcpy_s((char *)bcn_recv->SSID, DOT11_MAX_SSID_LEN,
(char *)bi->SSID, DOT11_MAX_SSID_LEN);
/* Returning void here as copy size does not exceed dest size of ETH_LEN */
(void)memcpy_s(&bcn_recv->BSSID, ETHER_ADDR_LEN, &bi->BSSID, ETH_ALEN);
bcn_recv->channel = wf_chspec_ctlchan(
wl_chspec_driver_to_host(bi->chanspec));
bcn_recv->beacon_interval = bi->beacon_period;
/* kernal timestamp */
osl_get_monotonic_boottime(&ts);
bcn_recv->system_time = ((u64)ts.tv_sec*1000000)
+ ts.tv_nsec / 1000;
bcn_recv->timestamp[0] = bi->timestamp[0];
bcn_recv->timestamp[1] = bi->timestamp[1];
if ((err = wl_android_bcnrecv_event(cfgdev_to_wlc_ndev(cfgdev, cfg),
BCNRECV_ATTR_BCNINFO, 0, 0,
(uint8 *)bcn_recv, sizeof(*bcn_recv)))
!= BCME_OK) {
WL_ERR(("failed to send bcnrecv event, error:%d\n", err));
}
} else {
WL_DBG(("Ignoring Escan Event:%d \n", scan_status));
}
exit:
if (bcn_recv) {
MFREE(cfg->osh, bcn_recv, sizeof(*bcn_recv));
}
return err;
}
#endif /* WL_BCNRECV */
#ifdef ESCAN_BUF_OVERFLOW_MGMT
#ifndef WL_DRV_AVOID_SCANCACHE
static void
wl_cfg80211_find_removal_candidate(wl_bss_info_t *bss, removal_element_t *candidate)
{
int idx;
for (idx = 0; idx < BUF_OVERFLOW_MGMT_COUNT; idx++) {
int len = BUF_OVERFLOW_MGMT_COUNT - idx - 1;
if (bss->RSSI < candidate[idx].RSSI) {
if (len) {
/* In the below memcpy operation the candidate array always has the
* buffer space available to max 'len' calculated in the for loop.
*/
(void)memcpy_s(&candidate[idx + 1],
(sizeof(removal_element_t) * len),
&candidate[idx], sizeof(removal_element_t) * len);
}
candidate[idx].RSSI = bss->RSSI;
candidate[idx].length = bss->length;
(void)memcpy_s(&candidate[idx].BSSID, ETHER_ADDR_LEN,
&bss->BSSID, ETHER_ADDR_LEN);
return;
}
}
}
static void
wl_cfg80211_remove_lowRSSI_info(wl_scan_results_t *list, removal_element_t *candidate,
wl_bss_info_t *bi)
{
int idx1, idx2;
int total_delete_len = 0;
for (idx1 = 0; idx1 < BUF_OVERFLOW_MGMT_COUNT; idx1++) {
int cur_len = WL_SCAN_RESULTS_FIXED_SIZE;
wl_bss_info_t *bss = NULL;
if (candidate[idx1].RSSI >= bi->RSSI)
continue;
for (idx2 = 0; idx2 < list->count; idx2++) {
bss = bss ? (wl_bss_info_t *)((uintptr)bss + dtoh32(bss->length)) :
list->bss_info;
if (!bcmp(&candidate[idx1].BSSID, &bss->BSSID, ETHER_ADDR_LEN) &&
candidate[idx1].RSSI == bss->RSSI &&
candidate[idx1].length == dtoh32(bss->length)) {
u32 delete_len = dtoh32(bss->length);
WL_DBG(("delete scan info of " MACDBG " to add new AP\n",
MAC2STRDBG(bss->BSSID.octet)));
if (idx2 < list->count -1) {
memmove((u8 *)bss, (u8 *)bss + delete_len,
list->buflen - cur_len - delete_len);
}
list->buflen -= delete_len;
list->count--;
total_delete_len += delete_len;
/* if delete_len is greater than or equal to result length */
if (total_delete_len >= bi->length) {
return;
}
break;
}
cur_len += dtoh32(bss->length);
}
}
}
#endif /* WL_DRV_AVOID_SCANCACHE */
#endif /* ESCAN_BUF_OVERFLOW_MGMT */
s32
wl_escan_handler(struct bcm_cfg80211 *cfg, bcm_struct_cfgdev *cfgdev,
const wl_event_msg_t *e, void *data)
{
s32 err = BCME_OK;
s32 status = ntoh32(e->status);
wl_escan_result_t *escan_result;
struct net_device *ndev = NULL;
#ifndef WL_DRV_AVOID_SCANCACHE
wl_bss_info_t *bi;
u32 bi_length;
const wifi_p2p_ie_t * p2p_ie;
const u8 *p2p_dev_addr = NULL;
wl_scan_results_t *list;
wl_bss_info_t *bss = NULL;
u32 i;
#endif /* WL_DRV_AVOID_SCANCACHE */
u16 channel;
struct ieee80211_supported_band *band;
WL_DBG((" enter event type : %d, status : %d \n",
ntoh32(e->event_type), ntoh32(e->status)));
ndev = cfgdev_to_wlc_ndev(cfgdev, cfg);
mutex_lock(&cfg->scan_sync);
/* P2P SCAN is coming from primary interface */
if (wl_get_p2p_status(cfg, SCANNING)) {
if (wl_get_drv_status_all(cfg, SENDING_ACT_FRM))
ndev = cfg->afx_hdl->dev;
else
ndev = cfg->escan_info.ndev;
}
escan_result = (wl_escan_result_t *)data;
#ifdef WL_BCNRECV
if (cfg->bcnrecv_info.bcnrecv_state == BEACON_RECV_STARTED &&
status == WLC_E_STATUS_RXBCN) {
/* handle beacon recv scan results */
wl_bss_info_v109_2_t *bi_info;
bi_info = (wl_bss_info_v109_2_t *)escan_result->bss_info;
err = wl_bcnrecv_result_handler(cfg, cfgdev, bi_info, status);
goto exit;
}
#endif /* WL_BCNRECV */
if (!ndev || (!wl_get_drv_status(cfg, SCANNING, ndev) && !cfg->sched_scan_running)) {
WL_ERR_RLMT(("escan is not ready. drv_scan_status 0x%x"
" e_type %d e_states %d\n",
wl_get_drv_status(cfg, SCANNING, ndev),
ntoh32(e->event_type), ntoh32(e->status)));
goto exit;
}
#ifndef WL_DRV_AVOID_SCANCACHE
if (status == WLC_E_STATUS_PARTIAL) {
WL_DBG(("WLC_E_STATUS_PARTIAL \n"));
DBG_EVENT_LOG((dhd_pub_t *)cfg->pub, WIFI_EVENT_DRIVER_SCAN_RESULT_FOUND);
if (!escan_result) {
WL_ERR(("Invalid escan result (NULL pointer)\n"));
goto exit;
}
if ((dtoh32(escan_result->buflen) > (int)ESCAN_BUF_SIZE) ||
(dtoh32(escan_result->buflen) < sizeof(wl_escan_result_t))) {
WL_ERR(("Invalid escan buffer len:%d\n", dtoh32(escan_result->buflen)));
goto exit;
}
if (dtoh16(escan_result->bss_count) != 1) {
WL_ERR(("Invalid bss_count %d: ignoring\n", escan_result->bss_count));
goto exit;
}
bi = escan_result->bss_info;
if (!bi) {
WL_ERR(("Invalid escan bss info (NULL pointer)\n"));
goto exit;
}
bi_length = dtoh32(bi->length);
if (bi_length != (dtoh32(escan_result->buflen) - WL_ESCAN_RESULTS_FIXED_SIZE)) {
WL_ERR(("Invalid bss_info length %d: ignoring\n", bi_length));
goto exit;
}
/* +++++ terence 20130524: skip invalid bss */
channel =
bi->ctl_ch ? bi->ctl_ch : CHSPEC_CHANNEL(wl_chspec_driver_to_host(bi->chanspec));
if (channel <= CH_MAX_2G_CHANNEL)
band = bcmcfg_to_wiphy(cfg)->bands[IEEE80211_BAND_2GHZ];
else
band = bcmcfg_to_wiphy(cfg)->bands[IEEE80211_BAND_5GHZ];
if (!band) {
WL_ERR(("No valid band\n"));
goto exit;
}
if (!dhd_conf_match_channel(cfg->pub, channel))
goto exit;
/* ----- terence 20130524: skip invalid bss */
if (wl_escan_check_sync_id(status, escan_result->sync_id,
cfg->escan_info.cur_sync_id) < 0)
goto exit;
if (!(bcmcfg_to_wiphy(cfg)->interface_modes & BIT(NL80211_IFTYPE_ADHOC))) {
if (dtoh16(bi->capability) & DOT11_CAP_IBSS) {
WL_DBG(("Ignoring IBSS result\n"));
goto exit;
}
}
if (wl_get_drv_status_all(cfg, FINDING_COMMON_CHANNEL)) {
p2p_dev_addr = wl_cfgp2p_retreive_p2p_dev_addr(bi, bi_length);
if (p2p_dev_addr && !memcmp(p2p_dev_addr,
cfg->afx_hdl->tx_dst_addr.octet, ETHER_ADDR_LEN)) {
s32 channel = wf_chspec_ctlchan(
wl_chspec_driver_to_host(bi->chanspec));
if ((channel > MAXCHANNEL) || (channel <= 0))
channel = WL_INVALID;
else
WL_ERR(("ACTION FRAME SCAN : Peer " MACDBG " found,"
" channel : %d\n",
MAC2STRDBG(cfg->afx_hdl->tx_dst_addr.octet),
channel));
wl_clr_p2p_status(cfg, SCANNING);
cfg->afx_hdl->peer_chan = channel;
complete(&cfg->act_frm_scan);
goto exit;
}
} else {
int cur_len = WL_SCAN_RESULTS_FIXED_SIZE;
#ifdef ESCAN_BUF_OVERFLOW_MGMT
removal_element_t candidate[BUF_OVERFLOW_MGMT_COUNT];
int remove_lower_rssi = FALSE;
bzero(candidate, sizeof(removal_element_t)*BUF_OVERFLOW_MGMT_COUNT);
#endif /* ESCAN_BUF_OVERFLOW_MGMT */
list = wl_escan_get_buf(cfg, FALSE);
if (scan_req_match(cfg)) {
#ifdef WL_HOST_BAND_MGMT
s32 channel_band = 0;
chanspec_t chspec;
#endif /* WL_HOST_BAND_MGMT */
/* p2p scan && allow only probe response */
if ((cfg->p2p->search_state != WL_P2P_DISC_ST_SCAN) &&
(bi->flags & WL_BSS_FLAGS_FROM_BEACON))
goto exit;
if ((p2p_ie = wl_cfgp2p_find_p2pie(((u8 *) bi) + bi->ie_offset,
bi->ie_length)) == NULL) {
WL_ERR(("Couldn't find P2PIE in probe"
" response/beacon\n"));
goto exit;
}
#ifdef WL_HOST_BAND_MGMT
chspec = wl_chspec_driver_to_host(bi->chanspec);
channel_band = CHSPEC2WLC_BAND(chspec);
if ((cfg->curr_band == WLC_BAND_5G) &&
(channel_band == WLC_BAND_2G)) {
/* Avoid sending the GO results in band conflict */
if (wl_cfgp2p_retreive_p2pattrib(p2p_ie,
P2P_SEID_GROUP_ID) != NULL)
goto exit;
}
#endif /* WL_HOST_BAND_MGMT */
}
#ifdef ESCAN_BUF_OVERFLOW_MGMT
if (bi_length > ESCAN_BUF_SIZE - list->buflen)
remove_lower_rssi = TRUE;
#endif /* ESCAN_BUF_OVERFLOW_MGMT */
for (i = 0; i < list->count; i++) {
bss = bss ? (wl_bss_info_t *)((uintptr)bss + dtoh32(bss->length))
: list->bss_info;
if (!bss) {
WL_ERR(("bss is NULL\n"));
goto exit;
}
#ifdef ESCAN_BUF_OVERFLOW_MGMT
WL_DBG(("%s("MACDBG"), i=%d bss: RSSI %d list->count %d\n",
bss->SSID, MAC2STRDBG(bss->BSSID.octet),
i, bss->RSSI, list->count));
if (remove_lower_rssi)
wl_cfg80211_find_removal_candidate(bss, candidate);
#endif /* ESCAN_BUF_OVERFLOW_MGMT */
if (!bcmp(&bi->BSSID, &bss->BSSID, ETHER_ADDR_LEN) &&
(CHSPEC_BAND(wl_chspec_driver_to_host(bi->chanspec))
== CHSPEC_BAND(wl_chspec_driver_to_host(bss->chanspec))) &&
bi->SSID_len == bss->SSID_len &&
!bcmp(bi->SSID, bss->SSID, bi->SSID_len)) {
/* do not allow beacon data to update
*the data recd from a probe response
*/
if (!(bss->flags & WL_BSS_FLAGS_FROM_BEACON) &&
(bi->flags & WL_BSS_FLAGS_FROM_BEACON))
goto exit;
WL_DBG(("%s("MACDBG"), i=%d prev: RSSI %d"
" flags 0x%x, new: RSSI %d flags 0x%x\n",
bss->SSID, MAC2STRDBG(bi->BSSID.octet), i,
bss->RSSI, bss->flags, bi->RSSI, bi->flags));
if ((bss->flags & WL_BSS_FLAGS_RSSI_ONCHANNEL) ==
(bi->flags & WL_BSS_FLAGS_RSSI_ONCHANNEL)) {
/* preserve max RSSI if the measurements are
* both on-channel or both off-channel
*/
WL_DBG(("%s("MACDBG"), same onchan"
", RSSI: prev %d new %d\n",
bss->SSID, MAC2STRDBG(bi->BSSID.octet),
bss->RSSI, bi->RSSI));
bi->RSSI = MAX(bss->RSSI, bi->RSSI);
} else if ((bss->flags & WL_BSS_FLAGS_RSSI_ONCHANNEL) &&
(bi->flags & WL_BSS_FLAGS_RSSI_ONCHANNEL) == 0) {
/* preserve the on-channel rssi measurement
* if the new measurement is off channel
*/
WL_DBG(("%s("MACDBG"), prev onchan"
", RSSI: prev %d new %d\n",
bss->SSID, MAC2STRDBG(bi->BSSID.octet),
bss->RSSI, bi->RSSI));
bi->RSSI = bss->RSSI;
bi->flags |= WL_BSS_FLAGS_RSSI_ONCHANNEL;
}
if (dtoh32(bss->length) != bi_length) {
u32 prev_len = dtoh32(bss->length);
WL_DBG(("bss info replacement"
" is occured(bcast:%d->probresp%d)\n",
bss->ie_length, bi->ie_length));
WL_DBG(("%s("MACDBG"), replacement!(%d -> %d)\n",
bss->SSID, MAC2STRDBG(bi->BSSID.octet),
prev_len, bi_length));
if ((list->buflen - prev_len) + bi_length
> ESCAN_BUF_SIZE) {
WL_ERR(("Buffer is too small: keep the"
" previous result of this AP\n"));
/* Only update RSSI */
bss->RSSI = bi->RSSI;
bss->flags |= (bi->flags
& WL_BSS_FLAGS_RSSI_ONCHANNEL);
goto exit;
}
if (i < list->count - 1) {
/* memory copy required by this case only */
memmove((u8 *)bss + bi_length,
(u8 *)bss + prev_len,
list->buflen - cur_len - prev_len);
}
list->buflen -= prev_len;
list->buflen += bi_length;
}
list->version = dtoh32(bi->version);
/* In the above code under check
* '(dtoh32(bss->length) != bi_length)'
* buffer overflow is avoided. bi_length
* is already accounted in list->buflen
*/
if ((err = memcpy_s((u8 *)bss,
(ESCAN_BUF_SIZE - (list->buflen - bi_length)),
(u8 *)bi, bi_length)) != BCME_OK) {
WL_ERR(("Failed to copy the recent bss_info."
"err:%d recv_len:%d bi_len:%d\n", err,
ESCAN_BUF_SIZE - (list->buflen - bi_length),
bi_length));
/* This scenario should never happen. If it happens,
* set list->count to zero for recovery
*/
list->count = 0;
list->buflen = 0;
ASSERT(0);
}
goto exit;
}
cur_len += dtoh32(bss->length);
}
if (bi_length > ESCAN_BUF_SIZE - list->buflen) {
#ifdef ESCAN_BUF_OVERFLOW_MGMT
wl_cfg80211_remove_lowRSSI_info(list, candidate, bi);
if (bi_length > ESCAN_BUF_SIZE - list->buflen) {
WL_DBG(("RSSI(" MACDBG ") is too low(%d) to add Buffer\n",
MAC2STRDBG(bi->BSSID.octet), bi->RSSI));
goto exit;
}
#else
WL_ERR(("Buffer is too small: ignoring\n"));
goto exit;
#endif /* ESCAN_BUF_OVERFLOW_MGMT */
}
/* In the previous step check is added to ensure the bi_legth does not
* exceed the ESCAN_BUF_SIZE
*/
(void)memcpy_s(&(((char *)list)[list->buflen]),
(ESCAN_BUF_SIZE - list->buflen), bi, bi_length);
list->version = dtoh32(bi->version);
list->buflen += bi_length;
list->count++;
/*
* !Broadcast && number of ssid = 1 && number of channels =1
* means specific scan to association
*/
if (wl_cfgp2p_is_p2p_specific_scan(cfg->scan_request)) {
WL_ERR(("P2P assoc scan fast aborted.\n"));
wl_notify_escan_complete(cfg, cfg->escan_info.ndev, false, true);
goto exit;
}
}
}
else if (status == WLC_E_STATUS_SUCCESS) {
cfg->escan_info.escan_state = WL_ESCAN_STATE_IDLE;
wl_escan_print_sync_id(status, cfg->escan_info.cur_sync_id,
escan_result->sync_id);
if (wl_get_drv_status_all(cfg, FINDING_COMMON_CHANNEL)) {
WL_DBG(("ACTION FRAME SCAN DONE\n"));
wl_clr_p2p_status(cfg, SCANNING);
wl_clr_drv_status(cfg, SCANNING, cfg->afx_hdl->dev);
if (cfg->afx_hdl->peer_chan == WL_INVALID)
complete(&cfg->act_frm_scan);
} else if ((likely(cfg->scan_request)) || (cfg->sched_scan_running)) {
WL_INFORM_MEM(("ESCAN COMPLETED\n"));
DBG_EVENT_LOG((dhd_pub_t *)cfg->pub, WIFI_EVENT_DRIVER_SCAN_COMPLETE);
cfg->bss_list = wl_escan_get_buf(cfg, FALSE);
if (!scan_req_match(cfg)) {
WL_DBG(("SCAN COMPLETED: scanned AP count=%d\n",
cfg->bss_list->count));
}
wl_inform_bss(cfg);
wl_notify_escan_complete(cfg, ndev, false, false);
}
wl_escan_increment_sync_id(cfg, SCAN_BUF_NEXT);
} else if ((status == WLC_E_STATUS_ABORT) || (status == WLC_E_STATUS_NEWSCAN) ||
(status == WLC_E_STATUS_11HQUIET) || (status == WLC_E_STATUS_CS_ABORT) ||
(status == WLC_E_STATUS_NEWASSOC)) {
/* Dump FW preserve buffer content */
if (status == WLC_E_STATUS_ABORT) {
wl_flush_fw_log_buffer(ndev, FW_LOGSET_MASK_ALL);
}
/* Handle all cases of scan abort */
cfg->escan_info.escan_state = WL_ESCAN_STATE_IDLE;
wl_escan_print_sync_id(status, escan_result->sync_id,
cfg->escan_info.cur_sync_id);
WL_DBG(("ESCAN ABORT reason: %d\n", status));
if (wl_get_drv_status_all(cfg, FINDING_COMMON_CHANNEL)) {
WL_DBG(("ACTION FRAME SCAN DONE\n"));
wl_clr_drv_status(cfg, SCANNING, cfg->afx_hdl->dev);
wl_clr_p2p_status(cfg, SCANNING);
if (cfg->afx_hdl->peer_chan == WL_INVALID)
complete(&cfg->act_frm_scan);
} else if ((likely(cfg->scan_request)) || (cfg->sched_scan_running)) {
WL_INFORM_MEM(("ESCAN ABORTED\n"));
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 8, 0))
if (p2p_scan(cfg) && cfg->scan_request &&
(cfg->scan_request->flags & NL80211_SCAN_FLAG_FLUSH)) {
WL_ERR(("scan list is changed"));
cfg->bss_list = wl_escan_get_buf(cfg, FALSE);
} else
#endif // endif
cfg->bss_list = wl_escan_get_buf(cfg, TRUE);
if (!scan_req_match(cfg)) {
WL_TRACE_HW4(("SCAN ABORTED: scanned AP count=%d\n",
cfg->bss_list->count));
}
#ifdef DUAL_ESCAN_RESULT_BUFFER
if (escan_result->sync_id != cfg->escan_info.cur_sync_id) {
/* If sync_id is not matching, then the abort might have
* come for the old scan req or for the in-driver initiated
* scan. So do abort for scan_req for which sync_id is
* matching.
*/
WL_INFORM_MEM(("sync_id mismatch (%d != %d). "
"Ignore the scan abort event.\n",
escan_result->sync_id, cfg->escan_info.cur_sync_id));
goto exit;
} else {
/* sync id is matching, abort the scan */
WL_INFORM_MEM(("scan aborted for sync_id: %d \n",
cfg->escan_info.cur_sync_id));
wl_inform_bss(cfg);
wl_notify_escan_complete(cfg, ndev, true, false);
}
#else
wl_inform_bss(cfg);
wl_notify_escan_complete(cfg, ndev, true, false);
#endif /* DUAL_ESCAN_RESULT_BUFFER */
} else {
/* If there is no pending host initiated scan, do nothing */
WL_DBG(("ESCAN ABORT: No pending scans. Ignoring event.\n"));
}
wl_escan_increment_sync_id(cfg, SCAN_BUF_CNT);
} else if (status == WLC_E_STATUS_TIMEOUT) {
WL_ERR(("WLC_E_STATUS_TIMEOUT : scan_request[%p]\n", cfg->scan_request));
WL_ERR(("reason[0x%x]\n", e->reason));
if (e->reason == 0xFFFFFFFF) {
wl_notify_escan_complete(cfg, cfg->escan_info.ndev, true, true);
}
} else {
WL_ERR(("unexpected Escan Event %d : abort\n", status));
cfg->escan_info.escan_state = WL_ESCAN_STATE_IDLE;
wl_escan_print_sync_id(status, escan_result->sync_id,
cfg->escan_info.cur_sync_id);
if (wl_get_drv_status_all(cfg, FINDING_COMMON_CHANNEL)) {
WL_DBG(("ACTION FRAME SCAN DONE\n"));
wl_clr_p2p_status(cfg, SCANNING);
wl_clr_drv_status(cfg, SCANNING, cfg->afx_hdl->dev);
if (cfg->afx_hdl->peer_chan == WL_INVALID)
complete(&cfg->act_frm_scan);
} else if ((likely(cfg->scan_request)) || (cfg->sched_scan_running)) {
cfg->bss_list = wl_escan_get_buf(cfg, TRUE);
if (!scan_req_match(cfg)) {
WL_TRACE_HW4(("SCAN ABORTED(UNEXPECTED): "
"scanned AP count=%d\n",
cfg->bss_list->count));
}
wl_inform_bss(cfg);
wl_notify_escan_complete(cfg, ndev, true, false);
}
wl_escan_increment_sync_id(cfg, 2);
}
#else /* WL_DRV_AVOID_SCANCACHE */
err = wl_escan_without_scan_cache(cfg, escan_result, ndev, e, status);
#endif /* WL_DRV_AVOID_SCANCACHE */
exit:
mutex_unlock(&cfg->scan_sync);
return err;
}
/* Find listen channel */
static s32 wl_find_listen_channel(struct bcm_cfg80211 *cfg,
const u8 *ie, u32 ie_len)
{
const wifi_p2p_ie_t *p2p_ie;
const u8 *end, *pos;
s32 listen_channel;
pos = (const u8 *)ie;
p2p_ie = wl_cfgp2p_find_p2pie(pos, ie_len);
if (p2p_ie == NULL) {
return 0;
}
if (p2p_ie->len < MIN_P2P_IE_LEN || p2p_ie->len > MAX_P2P_IE_LEN) {
CFGP2P_ERR(("p2p_ie->len out of range - %d\n", p2p_ie->len));
return 0;
}
pos = p2p_ie->subelts;
end = p2p_ie->subelts + (p2p_ie->len - 4);
CFGP2P_DBG((" found p2p ie ! lenth %d \n",
p2p_ie->len));
while (pos < end) {
uint16 attr_len;
if (pos + 2 >= end) {
CFGP2P_DBG((" -- Invalid P2P attribute"));
return 0;
}
attr_len = ((uint16) (((pos + 1)[1] << 8) | (pos + 1)[0]));
if (pos + 3 + attr_len > end) {
CFGP2P_DBG(("P2P: Attribute underflow "
"(len=%u left=%d)",
attr_len, (int) (end - pos - 3)));
return 0;
}
/* if Listen Channel att id is 6 and the vailue is valid,
* return the listen channel
*/
if (pos[0] == 6) {
/* listen channel subel length format
* 1(id) + 2(len) + 3(country) + 1(op. class) + 1(chan num)
*/
listen_channel = pos[1 + 2 + 3 + 1];
if (listen_channel == SOCIAL_CHAN_1 ||
listen_channel == SOCIAL_CHAN_2 ||
listen_channel == SOCIAL_CHAN_3) {
CFGP2P_DBG((" Found my Listen Channel %d \n", listen_channel));
return listen_channel;
}
}
pos += 3 + attr_len;
}
return 0;
}
#ifdef WL_SCAN_TYPE
static u32
wl_cfgscan_map_nl80211_scan_type(struct bcm_cfg80211 *cfg, struct cfg80211_scan_request *request)
{
u32 scan_flags = 0;
if (!request) {
return scan_flags;
}
if (request->flags & NL80211_SCAN_FLAG_LOW_SPAN) {
scan_flags |= WL_SCANFLAGS_LOW_SPAN;
}
if (request->flags & NL80211_SCAN_FLAG_HIGH_ACCURACY) {
scan_flags |= WL_SCANFLAGS_HIGH_ACCURACY;
}
if (request->flags & NL80211_SCAN_FLAG_LOW_POWER) {
scan_flags |= WL_SCANFLAGS_LOW_POWER_SCAN;
}
if (request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) {
scan_flags |= WL_SCANFLAGS_LOW_PRIO;
}
WL_INFORM(("scan flags. wl:%x cfg80211:%x\n", scan_flags, request->flags));
return scan_flags;
}
#endif /* WL_SCAN_TYPE */
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0))
#define IS_RADAR_CHAN(flags) (flags & (IEEE80211_CHAN_RADAR | IEEE80211_CHAN_PASSIVE_SCAN))
#else
#define IS_RADAR_CHAN(flags) (flags & (IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IR))
#endif // endif
static void
wl_cfgscan_populate_scan_channels(struct bcm_cfg80211 *cfg, u16 *channel_list,
struct cfg80211_scan_request *request, u32 *num_channels)
{
u32 i = 0, j = 0;
u32 channel;
u32 n_channels = 0;
u32 chanspec = 0;
if (!request || !request->n_channels) {
/* Do full channel scan */
return;
}
n_channels = request->n_channels;
for (i = 0; i < n_channels; i++) {
channel = ieee80211_frequency_to_channel(request->channels[i]->center_freq);
/* SKIP DFS channels for Secondary interface */
if ((cfg->escan_info.ndev != bcmcfg_to_prmry_ndev(cfg)) &&
(IS_RADAR_CHAN(request->channels[i]->flags)))
continue;
if (!dhd_conf_match_channel(cfg->pub, channel))
continue;
chanspec = WL_CHANSPEC_BW_20;
if (chanspec == INVCHANSPEC) {
WL_ERR(("Invalid chanspec! Skipping channel\n"));
continue;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
if (request->channels[i]->band == IEEE80211_BAND_60GHZ) {
/* Not supported */
continue;
}
#endif /* LINUX_VER >= 3.6 */
if (request->channels[i]->band == IEEE80211_BAND_2GHZ) {
#ifdef WL_HOST_BAND_MGMT
if (cfg->curr_band == WLC_BAND_5G) {
WL_DBG(("In 5G only mode, omit 2G channel:%d\n", channel));
continue;
}
#endif /* WL_HOST_BAND_MGMT */
chanspec |= WL_CHANSPEC_BAND_2G;
} else {
#ifdef WL_HOST_BAND_MGMT
if (cfg->curr_band == WLC_BAND_2G) {
WL_DBG(("In 2G only mode, omit 5G channel:%d\n", channel));
continue;
}
#endif /* WL_HOST_BAND_MGMT */
chanspec |= WL_CHANSPEC_BAND_5G;
}
channel_list[j] = channel;
channel_list[j] &= WL_CHANSPEC_CHAN_MASK;
channel_list[j] |= chanspec;
WL_SCAN(("Chan : %d, Channel spec: %x \n",
channel, channel_list[j]));
channel_list[j] = wl_chspec_host_to_driver(channel_list[j]);
j++;
}
*num_channels = j;
}
static void
wl_cfgscan_populate_scan_ssids(struct bcm_cfg80211 *cfg, u8 *buf_ptr, u32 buf_len,
struct cfg80211_scan_request *request, u32 *ssid_num)
{
u32 n_ssids;
wlc_ssid_t ssid;
int i, j = 0;
if (!request || !buf_ptr) {
/* Do full channel scan */
return;
}
n_ssids = request->n_ssids;
if (n_ssids > 0) {
if (buf_len < (n_ssids * sizeof(wlc_ssid_t))) {
WL_ERR(("buf len not sufficient for scan ssids\n"));
return;
}
for (i = 0; i < n_ssids; i++) {
bzero(&ssid, sizeof(wlc_ssid_t));
ssid.SSID_len = MIN(request->ssids[i].ssid_len, DOT11_MAX_SSID_LEN);
/* Returning void here, as per previous line copy length does not exceed
* DOT11_MAX_SSID_LEN
*/
(void)memcpy_s(ssid.SSID, DOT11_MAX_SSID_LEN, request->ssids[i].ssid,
ssid.SSID_len);
if (!ssid.SSID_len) {
WL_SCAN(("%d: Broadcast scan\n", i));
} else {
WL_SCAN(("%d: scan for %s size =%d\n", i,
ssid.SSID, ssid.SSID_len));
}
/* For multiple ssid case copy the each SSID info the ptr below corresponds
* to that so dest is of type wlc_ssid_t
*/
(void)memcpy_s(buf_ptr, sizeof(wlc_ssid_t), &ssid, sizeof(wlc_ssid_t));
buf_ptr += sizeof(wlc_ssid_t);
j++;
}
} else {
WL_SCAN(("Broadcast scan\n"));
}
*ssid_num = j;
}
static s32
wl_scan_prep(struct bcm_cfg80211 *cfg, void *scan_params, u32 len,
struct cfg80211_scan_request *request)
{
wl_scan_params_t *params = NULL;
wl_scan_params_v2_t *params_v2 = NULL;
u32 scan_type = 0;
u32 scan_param_size = 0;
u32 n_channels = 0;
u32 n_ssids = 0;
uint16 *chan_list = NULL;
u32 channel_offset = 0;
u32 cur_offset;
if (!scan_params) {
return BCME_ERROR;
}
if (cfg->active_scan == PASSIVE_SCAN) {
WL_INFORM_MEM(("Enforcing passive scan\n"));
scan_type = WL_SCANFLAGS_PASSIVE;
}
WL_DBG(("Preparing Scan request\n"));
if (cfg->scan_params_v2) {
params_v2 = (wl_scan_params_v2_t *)scan_params;
scan_param_size = sizeof(wl_scan_params_v2_t);
channel_offset = offsetof(wl_scan_params_v2_t, channel_list);
} else {
params = (wl_scan_params_t *)scan_params;
scan_param_size = sizeof(wl_scan_params_t);
channel_offset = offsetof(wl_scan_params_t, channel_list);
}
if (params_v2) {
/* scan params ver2 */
#if defined(WL_SCAN_TYPE)
scan_type += wl_cfgscan_map_nl80211_scan_type(cfg, request);
#endif /* WL_SCAN_TYPE */
(void)memcpy_s(&params_v2->bssid, ETHER_ADDR_LEN, &ether_bcast, ETHER_ADDR_LEN);
params_v2->version = htod16(WL_SCAN_PARAMS_VERSION_V2);
params_v2->length = htod16(sizeof(wl_scan_params_v2_t));
params_v2->bss_type = DOT11_BSSTYPE_ANY;
params_v2->scan_type = htod32(scan_type);
params_v2->nprobes = htod32(-1);
params_v2->active_time = htod32(-1);
params_v2->passive_time = htod32(-1);
params_v2->home_time = htod32(-1);
params_v2->channel_num = 0;
bzero(&params_v2->ssid, sizeof(wlc_ssid_t));
chan_list = params_v2->channel_list;
} else {
/* scan params ver 1 */
if (!params) {
ASSERT(0);
return BCME_ERROR;
}
(void)memcpy_s(&params->bssid, ETHER_ADDR_LEN, &ether_bcast, ETHER_ADDR_LEN);
params->bss_type = DOT11_BSSTYPE_ANY;
params->scan_type = 0;
params->nprobes = htod32(-1);
params->active_time = htod32(-1);
params->passive_time = htod32(-1);
params->home_time = htod32(-1);
params->channel_num = 0;
bzero(&params->ssid, sizeof(wlc_ssid_t));
chan_list = params->channel_list;
}
if (!request) {
/* scan_request null, do scan based on base config */
WL_DBG(("scan_request is null\n"));
return BCME_OK;
}
WL_INFORM(("n_channels:%d n_ssids:%d\n", request->n_channels, request->n_ssids));
cur_offset = channel_offset;
/* Copy channel array if applicable */
if ((request->n_channels > 0) && chan_list) {
if (len >= (scan_param_size + (request->n_channels * sizeof(u16)))) {
wl_cfgscan_populate_scan_channels(cfg,
chan_list, request, &n_channels);
cur_offset += (n_channels * (sizeof(u16)));
}
}
/* Copy ssid array if applicable */
if (request->n_ssids > 0) {
cur_offset = (u32) roundup(cur_offset, sizeof(u32));
if (len > (cur_offset + (request->n_ssids * sizeof(wlc_ssid_t)))) {
u32 rem_len = len - cur_offset;
wl_cfgscan_populate_scan_ssids(cfg,
((u8 *)scan_params + cur_offset), rem_len, request, &n_ssids);
}
}
if (n_ssids || n_channels) {
u32 channel_num =
htod32((n_ssids << WL_SCAN_PARAMS_NSSID_SHIFT) |
(n_channels & WL_SCAN_PARAMS_COUNT_MASK));
if (params_v2) {
params_v2->channel_num = channel_num;
if (n_channels == 1) {
params_v2->active_time = htod32(WL_SCAN_CONNECT_DWELL_TIME_MS);
params_v2->nprobes = htod32(
params_v2->active_time / WL_SCAN_JOIN_PROBE_INTERVAL_MS);
}
} else {
params->channel_num = channel_num;
if (n_channels == 1) {
params->active_time = htod32(WL_SCAN_CONNECT_DWELL_TIME_MS);
params->nprobes = htod32(
params->active_time / WL_SCAN_JOIN_PROBE_INTERVAL_MS);
}
}
}
WL_INFORM(("scan_prep done. n_channels:%d n_ssids:%d\n", n_channels, n_ssids));
return BCME_OK;
}
static s32
wl_get_valid_channels(struct net_device *ndev, u8 *valid_chan_list, s32 size)
{
wl_uint32_list_t *list;
s32 err = BCME_OK;
if (valid_chan_list == NULL || size <= 0)
return -ENOMEM;
bzero(valid_chan_list, size);
list = (wl_uint32_list_t *)(void *) valid_chan_list;
list->count = htod32(WL_NUMCHANNELS);
err = wldev_ioctl_get(ndev, WLC_GET_VALID_CHANNELS, valid_chan_list, size);
if (err != 0) {
WL_ERR(("get channels failed with %d\n", err));
}
return err;
}
static s32
wl_run_escan(struct bcm_cfg80211 *cfg, struct net_device *ndev,
struct cfg80211_scan_request *request, uint16 action)
{
s32 err = BCME_OK;
u32 n_channels;
u32 n_ssids;
s32 params_size;
wl_escan_params_t *eparams = NULL;
wl_escan_params_v2_t *eparams_v2 = NULL;
u8 *scan_params = NULL;
u8 *params = NULL;
u8 chan_buf[sizeof(u32)*(WL_NUMCHANNELS + 1)];
u32 num_chans = 0;
s32 channel;
u32 n_valid_chan;
s32 search_state = WL_P2P_DISC_ST_SCAN;
u32 i, j, n_nodfs = 0;
u16 *default_chan_list = NULL;
wl_uint32_list_t *list;
s32 bssidx = -1;
struct net_device *dev = NULL;
#if defined(USE_INITIAL_2G_SCAN) || defined(USE_INITIAL_SHORT_DWELL_TIME)
bool is_first_init_2g_scan = false;
#endif /* USE_INITIAL_2G_SCAN || USE_INITIAL_SHORT_DWELL_TIME */
p2p_scan_purpose_t p2p_scan_purpose = P2P_SCAN_PURPOSE_MIN;
u32 chan_mem = 0;
u32 sync_id = 0;
WL_DBG(("Enter \n"));
/* scan request can come with empty request : perform all default scan */
if (!cfg) {
err = -EINVAL;
goto exit;
}
if (cfg->scan_params_v2) {
params_size = (WL_SCAN_PARAMS_V2_FIXED_SIZE +
OFFSETOF(wl_escan_params_v2_t, params));
} else {
params_size = (WL_SCAN_PARAMS_FIXED_SIZE + OFFSETOF(wl_escan_params_t, params));
}
if (!cfg->p2p_supported || !p2p_scan(cfg)) {
/* LEGACY SCAN TRIGGER */
WL_SCAN((" LEGACY E-SCAN START\n"));
#if defined(USE_INITIAL_2G_SCAN) || defined(USE_INITIAL_SHORT_DWELL_TIME)
if (!request) {
err = -EINVAL;
goto exit;
}
if (ndev == bcmcfg_to_prmry_ndev(cfg) && g_first_broadcast_scan == true) {
#ifdef USE_INITIAL_2G_SCAN
struct ieee80211_channel tmp_channel_list[CH_MAX_2G_CHANNEL];
/* allow one 5G channel to add previous connected channel in 5G */
bool allow_one_5g_channel = TRUE;
j = 0;
for (i = 0; i < request->n_channels; i++) {
int tmp_chan = ieee80211_frequency_to_channel
(request->channels[i]->center_freq);
if (tmp_chan > CH_MAX_2G_CHANNEL) {
if (allow_one_5g_channel)
allow_one_5g_channel = FALSE;
else
continue;
}
if (j > CH_MAX_2G_CHANNEL) {
WL_ERR(("Index %d exceeds max 2.4GHz channels %d"
" and previous 5G connected channel\n",
j, CH_MAX_2G_CHANNEL));
break;
}
bcopy(request->channels[i], &tmp_channel_list[j],
sizeof(struct ieee80211_channel));
WL_SCAN(("channel of request->channels[%d]=%d\n", i, tmp_chan));
j++;
}
if ((j > 0) && (j <= CH_MAX_2G_CHANNEL)) {
for (i = 0; i < j; i++)
bcopy(&tmp_channel_list[i], request->channels[i],
sizeof(struct ieee80211_channel));
request->n_channels = j;
is_first_init_2g_scan = true;
}
else
WL_ERR(("Invalid number of 2.4GHz channels %d\n", j));
WL_SCAN(("request->n_channels=%d\n", request->n_channels));
#else /* USE_INITIAL_SHORT_DWELL_TIME */
is_first_init_2g_scan = true;
#endif /* USE_INITIAL_2G_SCAN */
g_first_broadcast_scan = false;
}
#endif /* USE_INITIAL_2G_SCAN || USE_INITIAL_SHORT_DWELL_TIME */
/* if scan request is not empty parse scan request paramters */
if (request != NULL) {
n_channels = request->n_channels;
n_ssids = request->n_ssids;
if (n_channels % 2)
/* If n_channels is odd, add a padd of u16 */
params_size += sizeof(u16) * (n_channels + 1);
else
params_size += sizeof(u16) * n_channels;
/* Allocate space for populating ssids in wl_escan_params_t struct */
params_size += sizeof(struct wlc_ssid) * n_ssids;
}
params = MALLOCZ(cfg->osh, params_size);
if (params == NULL) {
err = -ENOMEM;
goto exit;
}
wl_escan_set_sync_id(sync_id, cfg);
if (cfg->scan_params_v2) {
eparams_v2 = (wl_escan_params_v2_t *)params;
scan_params = (u8 *)&eparams_v2->params;
eparams_v2->version = htod32(ESCAN_REQ_VERSION_V2);
eparams_v2->action = htod16(action);
eparams_v2->sync_id = sync_id;
} else {
eparams = (wl_escan_params_t *)params;
scan_params = (u8 *)&eparams->params;
eparams->version = htod32(ESCAN_REQ_VERSION);
eparams->action = htod16(action);
eparams->sync_id = sync_id;
}
if (wl_scan_prep(cfg, scan_params, params_size, request) < 0) {
WL_ERR(("scan_prep failed\n"));
err = -EINVAL;
goto exit;
}
#if defined(USE_INITIAL_2G_SCAN) || defined(USE_INITIAL_SHORT_DWELL_TIME)
/* Override active_time to reduce scan time if it's first bradcast scan. */
if (is_first_init_2g_scan) {
if (eparams_v2) {
eparams_v2->params.active_time = FIRST_SCAN_ACTIVE_DWELL_TIME_MS;
} else {
eparams->params.active_time = FIRST_SCAN_ACTIVE_DWELL_TIME_MS;
}
}
#endif /* USE_INITIAL_2G_SCAN || USE_INITIAL_SHORT_DWELL_TIME */
wl_escan_set_type(cfg, WL_SCANTYPE_LEGACY);
if (params_size + sizeof("escan") >= WLC_IOCTL_MEDLEN) {
WL_ERR(("ioctl buffer length not sufficient\n"));
MFREE(cfg->osh, params, params_size);
err = -ENOMEM;
goto exit;
}
bssidx = wl_get_bssidx_by_wdev(cfg, ndev->ieee80211_ptr);
WL_MSG(ndev->name, "LEGACY_SCAN sync ID: %d, bssidx: %d\n", sync_id, bssidx);
err = wldev_iovar_setbuf(ndev, "escan", params, params_size,
cfg->escan_ioctl_buf, WLC_IOCTL_MEDLEN, NULL);
if (unlikely(err)) {
if (err == BCME_EPERM)
/* Scan Not permitted at this point of time */
WL_DBG((" Escan not permitted at this time (%d)\n", err));
else
WL_ERR((" Escan set error (%d)\n", err));
} else {
DBG_EVENT_LOG((dhd_pub_t *)cfg->pub, WIFI_EVENT_DRIVER_SCAN_REQUESTED);
}
MFREE(cfg->osh, params, params_size);
}
else if (p2p_is_on(cfg) && p2p_scan(cfg)) {
/* P2P SCAN TRIGGER */
s32 _freq = 0;
n_nodfs = 0;
if (request && request->n_channels) {
num_chans = request->n_channels;
WL_SCAN((" chann number : %d\n", num_chans));
chan_mem = (u32)(num_chans * sizeof(*default_chan_list));
default_chan_list = MALLOCZ(cfg->osh, chan_mem);
if (default_chan_list == NULL) {
WL_ERR(("channel list allocation failed \n"));
err = -ENOMEM;
goto exit;
}
if (!wl_get_valid_channels(ndev, chan_buf, sizeof(chan_buf))) {
#ifdef P2P_SKIP_DFS
int is_printed = false;
#endif /* P2P_SKIP_DFS */
list = (wl_uint32_list_t *) chan_buf;
n_valid_chan = dtoh32(list->count);
if (n_valid_chan > WL_NUMCHANNELS) {
WL_ERR(("wrong n_valid_chan:%d\n", n_valid_chan));
MFREE(cfg->osh, default_chan_list, chan_mem);
err = -EINVAL;
goto exit;
}
for (i = 0; i < num_chans; i++)
{
#ifdef WL_HOST_BAND_MGMT
int channel_band = 0;
#endif /* WL_HOST_BAND_MGMT */
_freq = request->channels[i]->center_freq;
channel = ieee80211_frequency_to_channel(_freq);
#ifdef WL_HOST_BAND_MGMT
channel_band = (channel > CH_MAX_2G_CHANNEL) ?
WLC_BAND_5G : WLC_BAND_2G;
if ((cfg->curr_band != WLC_BAND_AUTO) &&
(cfg->curr_band != channel_band) &&
!IS_P2P_SOCIAL_CHANNEL(channel))
continue;
#endif /* WL_HOST_BAND_MGMT */
/* ignore DFS channels */
if (request->channels[i]->flags &
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0))
(IEEE80211_CHAN_NO_IR
| IEEE80211_CHAN_RADAR))
#else
(IEEE80211_CHAN_RADAR
| IEEE80211_CHAN_PASSIVE_SCAN))
#endif // endif
continue;
#ifdef P2P_SKIP_DFS
if (channel >= 52 && channel <= 144) {
if (is_printed == false) {
WL_ERR(("SKIP DFS CHANs(52~144)\n"));
is_printed = true;
}
continue;
}
#endif /* P2P_SKIP_DFS */
for (j = 0; j < n_valid_chan; j++) {
/* allows only supported channel on
* current reguatory
*/
if (n_nodfs >= num_chans) {
break;
}
if (channel == (dtoh32(list->element[j]))) {
default_chan_list[n_nodfs++] =
channel;
}
}
}
}
if (num_chans == SOCIAL_CHAN_CNT && (
(default_chan_list[0] == SOCIAL_CHAN_1) &&
(default_chan_list[1] == SOCIAL_CHAN_2) &&
(default_chan_list[2] == SOCIAL_CHAN_3))) {
/* SOCIAL CHANNELS 1, 6, 11 */
search_state = WL_P2P_DISC_ST_SEARCH;
p2p_scan_purpose = P2P_SCAN_SOCIAL_CHANNEL;
WL_DBG(("P2P SEARCH PHASE START \n"));
} else if (((dev = wl_to_p2p_bss_ndev(cfg, P2PAPI_BSSCFG_CONNECTION1)) &&
(wl_get_mode_by_netdev(cfg, dev) == WL_MODE_AP)) ||
((dev = wl_to_p2p_bss_ndev(cfg, P2PAPI_BSSCFG_CONNECTION2)) &&
(wl_get_mode_by_netdev(cfg, dev) == WL_MODE_AP))) {
/* If you are already a GO, then do SEARCH only */
WL_DBG(("Already a GO. Do SEARCH Only"));
search_state = WL_P2P_DISC_ST_SEARCH;
num_chans = n_nodfs;
p2p_scan_purpose = P2P_SCAN_NORMAL;
} else if (num_chans == 1) {
p2p_scan_purpose = P2P_SCAN_CONNECT_TRY;
WL_INFORM_MEM(("Trigger p2p join scan\n"));
} else if (num_chans == SOCIAL_CHAN_CNT + 1) {
/* SOCIAL_CHAN_CNT + 1 takes care of the Progressive scan supported by
* the supplicant
*/
p2p_scan_purpose = P2P_SCAN_SOCIAL_CHANNEL;
} else {
WL_DBG(("P2P SCAN STATE START \n"));
num_chans = n_nodfs;
p2p_scan_purpose = P2P_SCAN_NORMAL;
}
} else {
err = -EINVAL;
goto exit;
}
err = wl_cfgp2p_escan(cfg, ndev, ACTIVE_SCAN, num_chans, default_chan_list,
search_state, action,
wl_to_p2p_bss_bssidx(cfg, P2PAPI_BSSCFG_DEVICE), NULL,
p2p_scan_purpose);
if (!err)
cfg->p2p->search_state = search_state;
MFREE(cfg->osh, default_chan_list, chan_mem);
}
exit:
if (unlikely(err)) {
/* Don't print Error incase of Scan suppress */
if ((err == BCME_EPERM) && cfg->scan_suppressed)
WL_DBG(("Escan failed: Scan Suppressed \n"));
else
WL_ERR(("scan error (%d)\n", err));
}
return err;
}
s32
wl_do_escan(struct bcm_cfg80211 *cfg, struct wiphy *wiphy, struct net_device *ndev,
struct cfg80211_scan_request *request)
{
s32 err = BCME_OK;
s32 passive_scan;
s32 passive_scan_time;
s32 passive_scan_time_org;
wl_scan_results_t *results;
WL_SCAN(("Enter \n"));
results = wl_escan_get_buf(cfg, FALSE);
results->version = 0;
results->count = 0;
results->buflen = WL_SCAN_RESULTS_FIXED_SIZE;
cfg->escan_info.ndev = ndev;
cfg->escan_info.wiphy = wiphy;
cfg->escan_info.escan_state = WL_ESCAN_STATE_SCANING;
passive_scan = cfg->active_scan ? 0 : 1;
err = wldev_ioctl_set(ndev, WLC_SET_PASSIVE_SCAN,
&passive_scan, sizeof(passive_scan));
if (unlikely(err)) {
WL_ERR(("error (%d)\n", err));
goto exit;
}
if (passive_channel_skip) {
err = wldev_ioctl_get(ndev, WLC_GET_SCAN_PASSIVE_TIME,
&passive_scan_time_org, sizeof(passive_scan_time_org));
if (unlikely(err)) {
WL_ERR(("== error (%d)\n", err));
goto exit;
}
WL_SCAN(("PASSIVE SCAN time : %d \n", passive_scan_time_org));
passive_scan_time = 0;
err = wldev_ioctl_set(ndev, WLC_SET_SCAN_PASSIVE_TIME,
&passive_scan_time, sizeof(passive_scan_time));
if (unlikely(err)) {
WL_ERR(("== error (%d)\n", err));
goto exit;
}
WL_SCAN(("PASSIVE SCAN SKIPED!! (passive_channel_skip:%d) \n",
passive_channel_skip));
}
err = wl_run_escan(cfg, ndev, request, WL_SCAN_ACTION_START);
if (passive_channel_skip) {
err = wldev_ioctl_set(ndev, WLC_SET_SCAN_PASSIVE_TIME,
&passive_scan_time_org, sizeof(passive_scan_time_org));
if (unlikely(err)) {
WL_ERR(("== error (%d)\n", err));
goto exit;
}
WL_SCAN(("PASSIVE SCAN RECOVERED!! (passive_scan_time_org:%d) \n",
passive_scan_time_org));
}
exit:
return err;
}
static s32
wl_get_scan_timeout_val(struct bcm_cfg80211 *cfg)
{
u32 scan_timer_interval_ms = WL_SCAN_TIMER_INTERVAL_MS;
/* If NAN is enabled adding +10 sec to the existing timeout value */
#ifdef WL_NAN
if (cfg->nan_enable) {
scan_timer_interval_ms += WL_SCAN_TIMER_INTERVAL_MS_NAN;
}
#endif /* WL_NAN */
WL_MEM(("scan_timer_interval_ms %d\n", scan_timer_interval_ms));
return scan_timer_interval_ms;
}
#define SCAN_EBUSY_RETRY_LIMIT 20
static s32
wl_cfgscan_handle_scanbusy(struct bcm_cfg80211 *cfg, struct net_device *ndev, s32 err)
{
s32 scanbusy_err = 0;
static u32 busy_count = 0;
if (!err) {
busy_count = 0;
return scanbusy_err;
}
if (err == BCME_BUSY || err == BCME_NOTREADY) {
WL_ERR(("Scan err = (%d), busy?%d", err, -EBUSY));
scanbusy_err = -EBUSY;
} else if ((err == BCME_EPERM) && cfg->scan_suppressed) {
WL_ERR(("Scan not permitted due to scan suppress\n"));
scanbusy_err = -EPERM;
} else {
/* For all other fw errors, use a generic error code as return
* value to cfg80211 stack
*/
scanbusy_err = -EAGAIN;
}
if (scanbusy_err == -EBUSY) {
/* Flush FW preserve buffer logs for checking failure */
if (busy_count++ > (SCAN_EBUSY_RETRY_LIMIT/5)) {
wl_flush_fw_log_buffer(ndev, FW_LOGSET_MASK_ALL);
}
if (busy_count > SCAN_EBUSY_RETRY_LIMIT) {
struct ether_addr bssid;
s32 ret = 0;
dhd_pub_t *dhdp = (dhd_pub_t *)(cfg->pub);
if (dhd_query_bus_erros(dhdp)) {
return BCME_NOTREADY;
}
dhdp->scan_busy_occurred = TRUE;
busy_count = 0;
WL_ERR(("Unusual continuous EBUSY error, %d %d %d %d %d %d %d %d %d\n",
wl_get_drv_status(cfg, SCANNING, ndev),
wl_get_drv_status(cfg, SCAN_ABORTING, ndev),
wl_get_drv_status(cfg, CONNECTING, ndev),
wl_get_drv_status(cfg, CONNECTED, ndev),
wl_get_drv_status(cfg, DISCONNECTING, ndev),
wl_get_drv_status(cfg, AP_CREATING, ndev),
wl_get_drv_status(cfg, AP_CREATED, ndev),
wl_get_drv_status(cfg, SENDING_ACT_FRM, ndev),
wl_get_drv_status(cfg, SENDING_ACT_FRM, ndev)));
#if defined(DHD_DEBUG) && defined(DHD_FW_COREDUMP)
if (dhdp->memdump_enabled) {
dhdp->memdump_type = DUMP_TYPE_SCAN_BUSY;
dhd_bus_mem_dump(dhdp);
}
#endif /* DHD_DEBUG && DHD_FW_COREDUMP */
dhdp->hang_reason = HANG_REASON_SCAN_BUSY;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27))
dhd_os_send_hang_message(dhdp);
#else
WL_ERR(("%s: HANG event is unsupported\n", __FUNCTION__));
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27) && OEM_ANDROID */
bzero(&bssid, sizeof(bssid));
if ((ret = wldev_ioctl_get(ndev, WLC_GET_BSSID,
&bssid, ETHER_ADDR_LEN)) == 0) {
WL_ERR(("FW is connected with " MACDBG "/n",
MAC2STRDBG(bssid.octet)));
} else {
WL_ERR(("GET BSSID failed with %d\n", ret));
}
wl_cfg80211_scan_abort(cfg);
} else {
/* Hold the context for 400msec, so that 10 subsequent scans
* can give a buffer of 4sec which is enough to
* cover any on-going scan in the firmware
*/
WL_DBG(("Enforcing delay for EBUSY case \n"));
msleep(400);
}
} else {
busy_count = 0;
}
return scanbusy_err;
}
s32
__wl_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev,
struct cfg80211_scan_request *request,
struct cfg80211_ssid *this_ssid)
{
struct bcm_cfg80211 *cfg = wiphy_priv(wiphy);
struct cfg80211_ssid *ssids;
struct ether_addr primary_mac;
bool p2p_ssid;
#ifdef WL11U
bcm_tlv_t *interworking_ie;
#endif // endif
s32 err = 0;
s32 bssidx = -1;
s32 i;
bool escan_req_failed = false;
s32 scanbusy_err = 0;
unsigned long flags;
#ifdef WL_CFG80211_VSDB_PRIORITIZE_SCAN_REQUEST
struct net_device *remain_on_channel_ndev = NULL;
#endif // endif
/*
* Hostapd triggers scan before starting automatic channel selection
* to collect channel characteristics. However firmware scan engine
* doesn't support any channel characteristics collection along with
* scan. Hence return scan success.
*/
if (request && (scan_req_iftype(request) == NL80211_IFTYPE_AP)) {
WL_DBG(("Scan Command on SoftAP Interface. Ignoring...\n"));
// terence 20161023: let it scan in SoftAP mode
// return 0;
}
ndev = ndev_to_wlc_ndev(ndev, cfg);
if (WL_DRV_STATUS_SENDING_AF_FRM_EXT(cfg)) {
WL_ERR(("Sending Action Frames. Try it again.\n"));
return -EAGAIN;
}
WL_DBG(("Enter wiphy (%p)\n", wiphy));
if (wl_get_drv_status_all(cfg, SCANNING)) {
if (cfg->scan_request == NULL) {
wl_clr_drv_status_all(cfg, SCANNING);
WL_DBG(("<<<<<<<<<<<Force Clear Scanning Status>>>>>>>>>>>\n"));
} else {
WL_ERR(("Scanning already\n"));
return -EAGAIN;
}
}
if (wl_get_drv_status(cfg, SCAN_ABORTING, ndev)) {
WL_ERR(("Scanning being aborted\n"));
return -EAGAIN;
}
if (request && request->n_ssids > WL_SCAN_PARAMS_SSID_MAX) {
WL_ERR(("request null or n_ssids > WL_SCAN_PARAMS_SSID_MAX\n"));
return -EOPNOTSUPP;
}
#ifdef WL_BCNRECV
/* check fakeapscan in progress then abort */
wl_android_bcnrecv_stop(ndev, WL_BCNRECV_SCANBUSY);
#endif /* WL_BCNRECV */
#ifdef WL_CFG80211_VSDB_PRIORITIZE_SCAN_REQUEST
mutex_lock(&cfg->scan_sync);
remain_on_channel_ndev = wl_cfg80211_get_remain_on_channel_ndev(cfg);
if (remain_on_channel_ndev) {
WL_DBG(("Remain_on_channel bit is set, somehow it didn't get cleared\n"));
wl_notify_escan_complete(cfg, remain_on_channel_ndev, true, true);
}
mutex_unlock(&cfg->scan_sync);
#endif /* WL_CFG80211_VSDB_PRIORITIZE_SCAN_REQUEST */
#ifdef P2P_LISTEN_OFFLOADING
wl_cfg80211_cancel_p2plo(cfg);
#endif /* P2P_LISTEN_OFFLOADING */
if (request) { /* scan bss */
ssids = request->ssids;
p2p_ssid = false;
for (i = 0; i < request->n_ssids; i++) {
if (ssids[i].ssid_len &&
IS_P2P_SSID(ssids[i].ssid, ssids[i].ssid_len)) {
/* P2P Scan */
#ifdef WL_BLOCK_P2P_SCAN_ON_STA
if (!(IS_P2P_IFACE(request->wdev))) {
/* P2P scan on non-p2p iface. Fail scan */
WL_ERR(("p2p_search on non p2p iface\n"));
goto scan_out;
}
#endif /* WL_BLOCK_P2P_SCAN_ON_STA */
p2p_ssid = true;
break;
}
}
if (p2p_ssid) {
if (cfg->p2p_supported) {
/* p2p scan trigger */
if (p2p_on(cfg) == false) {
/* p2p on at the first time */
p2p_on(cfg) = true;
wl_cfgp2p_set_firm_p2p(cfg);
get_primary_mac(cfg, &primary_mac);
#ifndef WL_P2P_USE_RANDMAC
wl_cfgp2p_generate_bss_mac(cfg, &primary_mac);
#endif /* WL_P2P_USE_RANDMAC */
#if defined(P2P_IE_MISSING_FIX)
cfg->p2p_prb_noti = false;
#endif // endif
}
wl_clr_p2p_status(cfg, GO_NEG_PHASE);
WL_DBG(("P2P: GO_NEG_PHASE status cleared \n"));
p2p_scan(cfg) = true;
}
} else {
/* legacy scan trigger
* So, we have to disable p2p discovery if p2p discovery is on
*/
if (cfg->p2p_supported) {
p2p_scan(cfg) = false;
/* If Netdevice is not equals to primary and p2p is on
* , we will do p2p scan using P2PAPI_BSSCFG_DEVICE.
*/
if (p2p_scan(cfg) == false) {
if (wl_get_p2p_status(cfg, DISCOVERY_ON)) {
err = wl_cfgp2p_discover_enable_search(cfg,
false);
if (unlikely(err)) {
goto scan_out;
}
}
}
}
if (!cfg->p2p_supported || !p2p_scan(cfg)) {
if ((bssidx = wl_get_bssidx_by_wdev(cfg,
ndev->ieee80211_ptr)) < 0) {
WL_ERR(("Find p2p index from ndev(%p) failed\n",
ndev));
err = BCME_ERROR;
goto scan_out;
}
#ifdef WL11U
if (request && (interworking_ie = wl_cfg80211_find_interworking_ie(
request->ie, request->ie_len)) != NULL) {
if ((err = wl_cfg80211_add_iw_ie(cfg, ndev, bssidx,
VNDR_IE_CUSTOM_FLAG, interworking_ie->id,
interworking_ie->data,
interworking_ie->len)) != BCME_OK) {
WL_ERR(("Failed to add interworking IE"));
}
} else if (cfg->wl11u) {
/* we have to clear IW IE and disable gratuitous APR */
wl_cfg80211_clear_iw_ie(cfg, ndev, bssidx);
err = wldev_iovar_setint_bsscfg(ndev, "grat_arp",
0, bssidx);
/* we don't care about error here
* because the only failure case is unsupported,
* which is fine
*/
if (unlikely(err)) {
WL_ERR(("Set grat_arp failed:(%d) Ignore!\n", err));
}
cfg->wl11u = FALSE;
}
#endif /* WL11U */
if (request) {
err = wl_cfg80211_set_mgmt_vndr_ies(cfg,
ndev_to_cfgdev(ndev), bssidx, VNDR_IE_PRBREQ_FLAG,
request->ie, request->ie_len);
}
if (unlikely(err)) {
// terence 20161023: let it scan in SoftAP mode
// goto scan_out;
}
}
}
} else { /* scan in ibss */
ssids = this_ssid;
}
if (request && cfg->p2p_supported) {
WL_TRACE_HW4(("START SCAN\n"));
DHD_OS_SCAN_WAKE_LOCK_TIMEOUT((dhd_pub_t *)(cfg->pub),
SCAN_WAKE_LOCK_TIMEOUT);
DHD_DISABLE_RUNTIME_PM((dhd_pub_t *)(cfg->pub));
}
if (cfg->p2p_supported) {
if (request && p2p_on(cfg) && p2p_scan(cfg)) {
/* find my listen channel */
cfg->afx_hdl->my_listen_chan =
wl_find_listen_channel(cfg, request->ie,
request->ie_len);
err = wl_cfgp2p_enable_discovery(cfg, ndev,
request->ie, request->ie_len);
if (unlikely(err)) {
goto scan_out;
}
}
}
mutex_lock(&cfg->scan_sync);
err = wl_do_escan(cfg, wiphy, ndev, request);
if (likely(!err)) {
goto scan_success;
} else {
escan_req_failed = true;
goto scan_out;
}
scan_success:
wl_cfgscan_handle_scanbusy(cfg, ndev, BCME_OK);
cfg->scan_request = request;
wl_set_drv_status(cfg, SCANNING, ndev);
/* Arm the timer */
mod_timer(&cfg->scan_timeout,
jiffies + msecs_to_jiffies(wl_get_scan_timeout_val(cfg)));
mutex_unlock(&cfg->scan_sync);
return 0;
scan_out:
if (escan_req_failed) {
WL_CFG_DRV_LOCK(&cfg->cfgdrv_lock, flags);
cfg->scan_request = NULL;
WL_CFG_DRV_UNLOCK(&cfg->cfgdrv_lock, flags);
mutex_unlock(&cfg->scan_sync);
/* Handling for scan busy errors */
scanbusy_err = wl_cfgscan_handle_scanbusy(cfg, ndev, err);
if (scanbusy_err == BCME_NOTREADY) {
/* In case of bus failures avoid ioctl calls */
DHD_OS_SCAN_WAKE_UNLOCK((dhd_pub_t *)(cfg->pub));
return -ENODEV;
}
err = scanbusy_err;
}
DHD_OS_SCAN_WAKE_UNLOCK((dhd_pub_t *)(cfg->pub));
return err;
}
s32
#if defined(WL_CFG80211_P2P_DEV_IF)
wl_cfg80211_scan(struct wiphy *wiphy, struct cfg80211_scan_request *request)
#else
wl_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev,
struct cfg80211_scan_request *request)
#endif /* WL_CFG80211_P2P_DEV_IF */
{
s32 err = 0;
struct bcm_cfg80211 *cfg = wiphy_priv(wiphy);
#if defined(WL_CFG80211_P2P_DEV_IF)
struct net_device *ndev = wdev_to_wlc_ndev(request->wdev, cfg);
#endif /* WL_CFG80211_P2P_DEV_IF */
WL_DBG(("Enter\n"));
RETURN_EIO_IF_NOT_UP(cfg);
#ifdef DHD_IFDEBUG
#ifdef WL_CFG80211_P2P_DEV_IF
PRINT_WDEV_INFO(request->wdev);
#else
PRINT_WDEV_INFO(ndev);
#endif /* WL_CFG80211_P2P_DEV_IF */
#endif /* DHD_IFDEBUG */
if (ndev == bcmcfg_to_prmry_ndev(cfg)) {
if (wl_cfg_multip2p_operational(cfg)) {
WL_ERR(("wlan0 scan failed, p2p devices are operational"));
return -ENODEV;
}
}
err = wl_cfg80211_check_in4way(cfg, ndev, NO_SCAN_IN4WAY,
WL_EXT_STATUS_SCAN, NULL);
if (err)
return err;
err = __wl_cfg80211_scan(wiphy, ndev, request, NULL);
if (unlikely(err)) {
WL_ERR(("scan error (%d)\n", err));
}
#ifdef WL_DRV_AVOID_SCANCACHE
/* Reset roam cache after successful scan request */
#ifdef ROAM_CHANNEL_CACHE
if (!err) {
reset_roam_cache(cfg);
}
#endif /* ROAM_CHANNEL_CACHE */
#endif /* WL_DRV_AVOID_SCANCACHE */
return err;
}
/* Note: This API should be invoked with scan_sync mutex
* held so that scan_request data structures doesn't
* get modified in between.
*/
struct wireless_dev *
wl_get_scan_wdev(struct bcm_cfg80211 *cfg)
{
struct wireless_dev *wdev = NULL;
if (!cfg) {
WL_ERR(("cfg ptr null\n"));
return NULL;
}
if (!cfg->scan_request && !cfg->sched_scan_req) {
/* No scans in progress */
WL_MEM(("no scan in progress \n"));
return NULL;
}
if (cfg->scan_request) {
wdev = GET_SCAN_WDEV(cfg->scan_request);
#ifdef WL_SCHED_SCAN
} else if (cfg->sched_scan_req) {
wdev = GET_SCHED_SCAN_WDEV(cfg->sched_scan_req);
#endif /* WL_SCHED_SCAN */
} else {
WL_MEM(("no scan in progress \n"));
}
return wdev;
}
void wl_cfg80211_cancel_scan(struct bcm_cfg80211 *cfg)
{
struct wireless_dev *wdev = NULL;
struct net_device *ndev = NULL;
mutex_lock(&cfg->scan_sync);
if (!cfg->scan_request && !cfg->sched_scan_req) {
/* No scans in progress */
WL_INFORM_MEM(("No scan in progress\n"));
goto exit;
}
wdev = wl_get_scan_wdev(cfg);
if (!wdev) {
WL_ERR(("No wdev present\n"));
goto exit;
}
ndev = wdev_to_wlc_ndev(wdev, cfg);
wl_notify_escan_complete(cfg, ndev, true, true);
WL_INFORM_MEM(("Scan aborted! \n"));
exit:
mutex_unlock(&cfg->scan_sync);
}
void wl_cfg80211_scan_abort(struct bcm_cfg80211 *cfg)
{
void *params = NULL;
s32 params_size = 0;
s32 err = BCME_OK;
struct net_device *dev = bcmcfg_to_prmry_ndev(cfg);
u32 channel, channel_num;
if (!in_atomic()) {
/* Abort scan params only need space for 1 channel and 0 ssids */
if (cfg->scan_params_v2) {
params_size = WL_SCAN_PARAMS_V2_FIXED_SIZE + 1 * sizeof(uint16);
} else {
params_size = WL_SCAN_PARAMS_FIXED_SIZE + 1 * sizeof(uint16);
}
params = MALLOCZ(cfg->osh, params_size);
if (params == NULL) {
WL_ERR(("mem alloc failed (%d bytes)\n", params_size));
return;
}
/* Use magic value of channel=-1 to abort scan */
channel = htodchanspec(-1);
channel_num = htod32((0 << WL_SCAN_PARAMS_NSSID_SHIFT) |
(1 & WL_SCAN_PARAMS_COUNT_MASK));
if (cfg->scan_params_v2) {
wl_scan_params_v2_t *params_v2 = (wl_scan_params_v2_t *)params;
params_v2->channel_list[0] = channel;
params_v2->channel_num = channel_num;
} else {
wl_scan_params_t *params_v1 = (wl_scan_params_t *)params;
params_v1->channel_list[0] = channel;
params_v1->channel_num = channel_num;
}
/* Do a scan abort to stop the driver's scan engine */
err = wldev_ioctl_set(dev, WLC_SCAN, params, params_size);
if (err < 0) {
/* scan abort can fail if there is no outstanding scan */
WL_DBG(("scan abort failed. ret:%d\n", err));
}
MFREE(cfg->osh, params, params_size);
}
#ifdef WLTDLS
if (cfg->tdls_mgmt_frame) {
MFREE(cfg->osh, cfg->tdls_mgmt_frame, cfg->tdls_mgmt_frame_len);
cfg->tdls_mgmt_frame = NULL;
cfg->tdls_mgmt_frame_len = 0;
}
#endif /* WLTDLS */
}
s32 wl_notify_escan_complete(struct bcm_cfg80211 *cfg,
struct net_device *ndev,
bool aborted, bool fw_abort)
{
s32 err = BCME_OK;
unsigned long flags;
struct net_device *dev;
dhd_pub_t *dhdp = (dhd_pub_t *)(cfg->pub);
WL_DBG(("Enter \n"));
BCM_REFERENCE(dhdp);
if (!ndev) {
WL_ERR(("ndev is null\n"));
err = BCME_ERROR;
goto out;
}
if (cfg->escan_info.ndev != ndev) {
WL_ERR(("Outstanding scan req ndev not matching (%p:%p)\n",
cfg->escan_info.ndev, ndev));
err = BCME_ERROR;
goto out;
}
if (cfg->scan_request) {
dev = bcmcfg_to_prmry_ndev(cfg);
#if defined(WL_ENABLE_P2P_IF)
if (cfg->scan_request->dev != cfg->p2p_net)
dev = cfg->scan_request->dev;
#elif defined(WL_CFG80211_P2P_DEV_IF)
if (cfg->scan_request->wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
dev = cfg->scan_request->wdev->netdev;
#endif // endif
}
else {
WL_DBG(("cfg->scan_request is NULL. Internal scan scenario."
"doing scan_abort for ndev %p primary %p",
ndev, bcmcfg_to_prmry_ndev(cfg)));
dev = ndev;
}
if (fw_abort && !in_atomic())
wl_cfg80211_scan_abort(cfg);
if (timer_pending(&cfg->scan_timeout))
del_timer_sync(&cfg->scan_timeout);
cfg->scan_enq_time = 0;
#if defined(ESCAN_RESULT_PATCH)
if (likely(cfg->scan_request)) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 8, 0))
if (aborted && p2p_scan(cfg) &&
(cfg->scan_request->flags & NL80211_SCAN_FLAG_FLUSH)) {
WL_ERR(("scan list is changed"));
cfg->bss_list = wl_escan_get_buf(cfg, !aborted);
} else
#endif // endif
cfg->bss_list = wl_escan_get_buf(cfg, aborted);
wl_inform_bss(cfg);
}
#endif /* ESCAN_RESULT_PATCH */
WL_CFG_DRV_LOCK(&cfg->cfgdrv_lock, flags);
#ifdef WL_SCHED_SCAN
if (cfg->sched_scan_req && !cfg->scan_request) {
if (!aborted) {
WL_INFORM_MEM(("[%s] Report sched scan done.\n", dev->name));
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0))
cfg80211_sched_scan_results(cfg->sched_scan_req->wiphy,
cfg->sched_scan_req->reqid);
#else
cfg80211_sched_scan_results(cfg->sched_scan_req->wiphy);
#endif /* LINUX_VER > 4.11 */
}
DBG_EVENT_LOG(dhdp, WIFI_EVENT_DRIVER_PNO_SCAN_COMPLETE);
cfg->sched_scan_running = FALSE;
cfg->sched_scan_req = NULL;
}
#endif /* WL_SCHED_SCAN */
if (likely(cfg->scan_request)) {
WL_INFORM_MEM(("[%s] Report scan done.\n", dev->name));
/* scan_sync mutex is already held */
_wl_notify_scan_done(cfg, aborted);
cfg->scan_request = NULL;
}
if (p2p_is_on(cfg))
wl_clr_p2p_status(cfg, SCANNING);
wl_clr_drv_status(cfg, SCANNING, dev);
DHD_OS_SCAN_WAKE_UNLOCK((dhd_pub_t *)(cfg->pub));
DHD_ENABLE_RUNTIME_PM((dhd_pub_t *)(cfg->pub));
WL_CFG_DRV_UNLOCK(&cfg->cfgdrv_lock, flags);
out:
return err;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0))
void
wl_cfg80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
{
struct bcm_cfg80211 *cfg;
WL_DBG(("Enter wl_cfg80211_abort_scan\n"));
cfg = wiphy_priv(wdev->wiphy);
/* Check if any scan in progress only then abort */
if (wl_get_drv_status_all(cfg, SCANNING)) {
wl_cfg80211_scan_abort(cfg);
/* Only scan abort is issued here. As per the expectation of abort_scan
* the status of abort is needed to be communicated using cfg80211_scan_done call.
* Here we just issue abort request and let the scan complete path to indicate
* abort to cfg80211 layer.
*/
WL_DBG(("wl_cfg80211_abort_scan: Scan abort issued to FW\n"));
}
}
#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)) */
int wl_cfg80211_scan_stop(struct bcm_cfg80211 *cfg, bcm_struct_cfgdev *cfgdev)
{
int ret = 0;
WL_TRACE(("Enter\n"));
if (!cfg || !cfgdev) {
return -EINVAL;
}
/* cancel scan and notify scan status */
wl_cfg80211_cancel_scan(cfg);
return ret;
}
/* This API is just meant as a wrapper for cfg80211_scan_done
* API. This doesn't do state mgmt. For cancelling scan,
* please use wl_cfg80211_cancel_scan API.
*/
static void
_wl_notify_scan_done(struct bcm_cfg80211 *cfg, bool aborted)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 8, 0))
struct cfg80211_scan_info info;
#endif // endif
if (!cfg->scan_request) {
return;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 8, 0))
memset_s(&info, sizeof(struct cfg80211_scan_info), 0, sizeof(struct cfg80211_scan_info));
info.aborted = aborted;
cfg80211_scan_done(cfg->scan_request, &info);
#else
cfg80211_scan_done(cfg->scan_request, aborted);
#endif // endif
cfg->scan_request = NULL;
}
#ifdef WL_DRV_AVOID_SCANCACHE
static u32 wl_p2p_find_peer_channel(struct bcm_cfg80211 *cfg, s32 status, wl_bss_info_t *bi,
u32 bi_length)
{
u32 ret;
u8 *p2p_dev_addr = NULL;
ret = wl_get_drv_status_all(cfg, FINDING_COMMON_CHANNEL);
if (!ret) {
return ret;
}
if (status == WLC_E_STATUS_PARTIAL) {
p2p_dev_addr = wl_cfgp2p_retreive_p2p_dev_addr(bi, bi_length);
if (p2p_dev_addr && !memcmp(p2p_dev_addr,
cfg->afx_hdl->tx_dst_addr.octet, ETHER_ADDR_LEN)) {
s32 channel = wf_chspec_ctlchan(
wl_chspec_driver_to_host(bi->chanspec));
if ((channel > MAXCHANNEL) || (channel <= 0)) {
channel = WL_INVALID;
} else {
WL_ERR(("ACTION FRAME SCAN : Peer " MACDBG " found,"
" channel : %d\n",
MAC2STRDBG(cfg->afx_hdl->tx_dst_addr.octet),
channel));
}
wl_clr_p2p_status(cfg, SCANNING);
cfg->afx_hdl->peer_chan = channel;
complete(&cfg->act_frm_scan);
}
} else {
WL_INFORM_MEM(("ACTION FRAME SCAN DONE\n"));
wl_clr_p2p_status(cfg, SCANNING);
wl_clr_drv_status(cfg, SCANNING, cfg->afx_hdl->dev);
if (cfg->afx_hdl->peer_chan == WL_INVALID)
complete(&cfg->act_frm_scan);
}
return ret;
}
static s32 wl_escan_without_scan_cache(struct bcm_cfg80211 *cfg, wl_escan_result_t *escan_result,
struct net_device *ndev, const wl_event_msg_t *e, s32 status)
{
s32 err = BCME_OK;
wl_bss_info_t *bi;
u32 bi_length;
bool aborted = false;
bool fw_abort = false;
bool notify_escan_complete = false;
if (wl_escan_check_sync_id(status, escan_result->sync_id,
cfg->escan_info.cur_sync_id) < 0) {
goto exit;
}
wl_escan_print_sync_id(status, escan_result->sync_id,
cfg->escan_info.cur_sync_id);
if (!(status == WLC_E_STATUS_TIMEOUT) || !(status == WLC_E_STATUS_PARTIAL)) {
cfg->escan_info.escan_state = WL_ESCAN_STATE_IDLE;
}
if ((likely(cfg->scan_request)) || (cfg->sched_scan_running)) {
notify_escan_complete = true;
}
if (status == WLC_E_STATUS_PARTIAL) {
WL_DBG(("WLC_E_STATUS_PARTIAL \n"));
DBG_EVENT_LOG((dhd_pub_t *)cfg->pub, WIFI_EVENT_DRIVER_SCAN_RESULT_FOUND);
if ((!escan_result) || (dtoh16(escan_result->bss_count) != 1)) {
WL_ERR(("Invalid escan result (NULL pointer) or invalid bss_count\n"));
goto exit;
}
bi = escan_result->bss_info;
bi_length = dtoh32(bi->length);
if ((!bi) ||
(bi_length != (dtoh32(escan_result->buflen) - WL_ESCAN_RESULTS_FIXED_SIZE))) {
WL_ERR(("Invalid escan bss info (NULL pointer)"
"or invalid bss_info length\n"));
goto exit;
}
if (!(bcmcfg_to_wiphy(cfg)->interface_modes & BIT(NL80211_IFTYPE_ADHOC))) {
if (dtoh16(bi->capability) & DOT11_CAP_IBSS) {
WL_DBG(("Ignoring IBSS result\n"));
goto exit;
}
}
if (wl_p2p_find_peer_channel(cfg, status, bi, bi_length)) {
goto exit;
} else {
if (scan_req_match(cfg)) {
/* p2p scan && allow only probe response */
if ((cfg->p2p->search_state != WL_P2P_DISC_ST_SCAN) &&
(bi->flags & WL_BSS_FLAGS_FROM_BEACON))
goto exit;
}
#ifdef ROAM_CHANNEL_CACHE
add_roam_cache(cfg, bi);
#endif /* ROAM_CHANNEL_CACHE */
err = wl_inform_single_bss(cfg, bi, false);
#ifdef ROAM_CHANNEL_CACHE
/* print_roam_cache(); */
update_roam_cache(cfg, ioctl_version);
#endif /* ROAM_CHANNEL_CACHE */
/*
* !Broadcast && number of ssid = 1 && number of channels =1
* means specific scan to association
*/
if (wl_cfgp2p_is_p2p_specific_scan(cfg->scan_request)) {
WL_ERR(("P2P assoc scan fast aborted.\n"));
aborted = false;
fw_abort = true;
}
/* Directly exit from function here and
* avoid sending notify completion to cfg80211
*/
goto exit;
}
} else if (status == WLC_E_STATUS_SUCCESS) {
if (wl_p2p_find_peer_channel(cfg, status, NULL, 0)) {
goto exit;
}
WL_INFORM_MEM(("ESCAN COMPLETED\n"));
DBG_EVENT_LOG((dhd_pub_t *)cfg->pub, WIFI_EVENT_DRIVER_SCAN_COMPLETE);
/* Update escan complete status */
aborted = false;
fw_abort = false;
} else if ((status == WLC_E_STATUS_ABORT) || (status == WLC_E_STATUS_NEWSCAN) ||
(status == WLC_E_STATUS_11HQUIET) || (status == WLC_E_STATUS_CS_ABORT) ||
(status == WLC_E_STATUS_NEWASSOC)) {
/* Handle all cases of scan abort */
WL_DBG(("ESCAN ABORT reason: %d\n", status));
if (wl_p2p_find_peer_channel(cfg, status, NULL, 0)) {
goto exit;
}
WL_INFORM_MEM(("ESCAN ABORTED\n"));
/* Update escan complete status */
aborted = true;
fw_abort = false;
} else if (status == WLC_E_STATUS_TIMEOUT) {
WL_ERR(("WLC_E_STATUS_TIMEOUT : scan_request[%p]\n", cfg->scan_request));
WL_ERR(("reason[0x%x]\n", e->reason));
if (e->reason == 0xFFFFFFFF) {
/* Update escan complete status */
aborted = true;
fw_abort = true;
}
} else {
WL_ERR(("unexpected Escan Event %d : abort\n", status));
if (wl_p2p_find_peer_channel(cfg, status, NULL, 0)) {
goto exit;
}
/* Update escan complete status */
aborted = true;
fw_abort = false;
}
/* Notify escan complete status */
if (notify_escan_complete) {
wl_notify_escan_complete(cfg, ndev, aborted, fw_abort);
}
exit:
return err;
}
#endif /* WL_DRV_AVOID_SCANCACHE */
s32
wl_notify_scan_status(struct bcm_cfg80211 *cfg, bcm_struct_cfgdev *cfgdev,
const wl_event_msg_t *e, void *data)
{
struct channel_info channel_inform;
struct wl_scan_results *bss_list;
struct net_device *ndev = NULL;
u32 len = WL_SCAN_BUF_MAX;
s32 err = 0;
unsigned long flags;
WL_DBG(("Enter \n"));
if (!wl_get_drv_status(cfg, SCANNING, ndev)) {
WL_DBG(("scan is not ready \n"));
return err;
}
ndev = cfgdev_to_wlc_ndev(cfgdev, cfg);
mutex_lock(&cfg->scan_sync);
wl_clr_drv_status(cfg, SCANNING, ndev);
bzero(&channel_inform, sizeof(channel_inform));
err = wldev_ioctl_get(ndev, WLC_GET_CHANNEL, &channel_inform,
sizeof(channel_inform));
if (unlikely(err)) {
WL_ERR(("scan busy (%d)\n", err));
goto scan_done_out;
}
channel_inform.scan_channel = dtoh32(channel_inform.scan_channel);
if (unlikely(channel_inform.scan_channel)) {
WL_DBG(("channel_inform.scan_channel (%d)\n",
channel_inform.scan_channel));
}
cfg->bss_list = cfg->scan_results;
bss_list = cfg->bss_list;
bzero(bss_list, len);
bss_list->buflen = htod32(len);
err = wldev_ioctl_get(ndev, WLC_SCAN_RESULTS, bss_list, len);
if (unlikely(err) && unlikely(!cfg->scan_suppressed)) {
WL_ERR(("%s Scan_results error (%d)\n", ndev->name, err));
err = -EINVAL;
goto scan_done_out;
}
bss_list->buflen = dtoh32(bss_list->buflen);
bss_list->version = dtoh32(bss_list->version);
bss_list->count = dtoh32(bss_list->count);
err = wl_inform_bss(cfg);
scan_done_out:
del_timer_sync(&cfg->scan_timeout);
WL_CFG_DRV_LOCK(&cfg->cfgdrv_lock, flags);
if (cfg->scan_request) {
_wl_notify_scan_done(cfg, false);
cfg->scan_request = NULL;
}
WL_CFG_DRV_UNLOCK(&cfg->cfgdrv_lock, flags);
WL_DBG(("cfg80211_scan_done\n"));
mutex_unlock(&cfg->scan_sync);
return err;
}
void wl_notify_scan_done(struct bcm_cfg80211 *cfg, bool aborted)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 8, 0))
struct cfg80211_scan_info info;
bzero(&info, sizeof(struct cfg80211_scan_info));
info.aborted = aborted;
cfg80211_scan_done(cfg->scan_request, &info);
#else
cfg80211_scan_done(cfg->scan_request, aborted);
#endif // endif
}
#ifdef WL_SCHED_SCAN
#define PNO_TIME 30
#define PNO_REPEAT 4
#define PNO_FREQ_EXPO_MAX 2
static bool
is_ssid_in_list(struct cfg80211_ssid *ssid, struct cfg80211_ssid *ssid_list, int count)
{
int i;
if (!ssid || !ssid_list)
return FALSE;
for (i = 0; i < count; i++) {
if (ssid->ssid_len == ssid_list[i].ssid_len) {
if (strncmp(ssid->ssid, ssid_list[i].ssid, ssid->ssid_len) == 0)
return TRUE;
}
}
return FALSE;
}
int
wl_cfg80211_sched_scan_start(struct wiphy *wiphy,
struct net_device *dev,
struct cfg80211_sched_scan_request *request)
{
ushort pno_time = PNO_TIME;
int pno_repeat = PNO_REPEAT;
int pno_freq_expo_max = PNO_FREQ_EXPO_MAX;
wlc_ssid_ext_t ssids_local[MAX_PFN_LIST_COUNT];
struct bcm_cfg80211 *cfg = wiphy_priv(wiphy);
dhd_pub_t *dhdp = (dhd_pub_t *)(cfg->pub);
struct cfg80211_ssid *ssid = NULL;
struct cfg80211_ssid *hidden_ssid_list = NULL;
log_conn_event_t *event_data = NULL;
tlv_log *tlv_data = NULL;
u32 alloc_len, tlv_len;
u32 payload_len;
int ssid_cnt = 0;
int i;
int ret = 0;
unsigned long flags;
if (!request) {
WL_ERR(("Sched scan request was NULL\n"));
return -EINVAL;
}
WL_DBG(("Enter \n"));
WL_PNO((">>> SCHED SCAN START\n"));
WL_PNO(("Enter n_match_sets:%d n_ssids:%d \n",
request->n_match_sets, request->n_ssids));
WL_PNO(("ssids:%d pno_time:%d pno_repeat:%d pno_freq:%d \n",
request->n_ssids, pno_time, pno_repeat, pno_freq_expo_max));
if (!request->n_ssids || !request->n_match_sets) {
WL_ERR(("Invalid sched scan req!! n_ssids:%d \n", request->n_ssids));
return -EINVAL;
}
bzero(&ssids_local, sizeof(ssids_local));
if (request->n_ssids > 0) {
hidden_ssid_list = request->ssids;
}
if (DBG_RING_ACTIVE(dhdp, DHD_EVENT_RING_ID)) {
alloc_len = sizeof(log_conn_event_t) + DOT11_MAX_SSID_LEN;
event_data = (log_conn_event_t *)MALLOC(cfg->osh, alloc_len);
if (!event_data) {
WL_ERR(("%s: failed to allocate log_conn_event_t with "
"length(%d)\n", __func__, alloc_len));
return -ENOMEM;
}
bzero(event_data, alloc_len);
event_data->tlvs = NULL;
tlv_len = sizeof(tlv_log);
event_data->tlvs = (tlv_log *)MALLOC(cfg->osh, tlv_len);
if (!event_data->tlvs) {
WL_ERR(("%s: failed to allocate log_tlv with "
"length(%d)\n", __func__, tlv_len));
MFREE(cfg->osh, event_data, alloc_len);
return -ENOMEM;
}
}
for (i = 0; i < request->n_match_sets && ssid_cnt < MAX_PFN_LIST_COUNT; i++) {
ssid = &request->match_sets[i].ssid;
/* No need to include null ssid */
if (ssid->ssid_len) {
ssids_local[ssid_cnt].SSID_len = MIN(ssid->ssid_len,
(uint32)DOT11_MAX_SSID_LEN);
/* In previous step max SSID_len is limited to DOT11_MAX_SSID_LEN,
* returning void
*/
(void)memcpy_s(ssids_local[ssid_cnt].SSID, DOT11_MAX_SSID_LEN, ssid->ssid,
ssids_local[ssid_cnt].SSID_len);
if (is_ssid_in_list(ssid, hidden_ssid_list, request->n_ssids)) {
ssids_local[ssid_cnt].hidden = TRUE;
WL_PNO((">>> PNO hidden SSID (%s) \n", ssid->ssid));
} else {
ssids_local[ssid_cnt].hidden = FALSE;
WL_PNO((">>> PNO non-hidden SSID (%s) \n", ssid->ssid));
}
#if (LINUX_VERSION_CODE > KERNEL_VERSION(3, 15, 0))
if (request->match_sets[i].rssi_thold != NL80211_SCAN_RSSI_THOLD_OFF) {
ssids_local[ssid_cnt].rssi_thresh =
(int8)request->match_sets[i].rssi_thold;
}
#endif /* (LINUX_VERSION_CODE > KERNEL_VERSION(3, 15, 0)) */
ssid_cnt++;
}
}
if (ssid_cnt) {
if ((ret = dhd_dev_pno_set_for_ssid(dev, ssids_local, ssid_cnt,
pno_time, pno_repeat, pno_freq_expo_max, NULL, 0)) < 0) {
WL_ERR(("PNO setup failed!! ret=%d \n", ret));
ret = -EINVAL;
goto exit;
}
if (DBG_RING_ACTIVE(dhdp, DHD_EVENT_RING_ID)) {
for (i = 0; i < ssid_cnt; i++) {
payload_len = sizeof(log_conn_event_t);
event_data->event = WIFI_EVENT_DRIVER_PNO_ADD;
tlv_data = event_data->tlvs;
/* ssid */
tlv_data->tag = WIFI_TAG_SSID;
tlv_data->len = ssids_local[i].SSID_len;
(void)memcpy_s(tlv_data->value, DOT11_MAX_SSID_LEN,
ssids_local[i].SSID, ssids_local[i].SSID_len);
payload_len += TLV_LOG_SIZE(tlv_data);
dhd_os_push_push_ring_data(dhdp, DHD_EVENT_RING_ID,
event_data, payload_len);
}
}
WL_CFG_DRV_LOCK(&cfg->cfgdrv_lock, flags);
cfg->sched_scan_req = request;
WL_CFG_DRV_UNLOCK(&cfg->cfgdrv_lock, flags);
} else {
ret = -EINVAL;
}
exit:
if (event_data) {
MFREE(cfg->osh, event_data->tlvs, tlv_len);
MFREE(cfg->osh, event_data, alloc_len);
}
return ret;
}
int
#if (LINUX_VERSION_CODE > KERNEL_VERSION(4, 11, 0))
wl_cfg80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev, u64 reqid)
#else
wl_cfg80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
#endif /* LINUX_VER > 4.11 */
{
struct bcm_cfg80211 *cfg = wiphy_priv(wiphy);
dhd_pub_t *dhdp = (dhd_pub_t *)(cfg->pub);
unsigned long flags;
WL_DBG(("Enter \n"));
WL_PNO((">>> SCHED SCAN STOP\n"));
if (dhd_dev_pno_stop_for_ssid(dev) < 0) {
WL_ERR(("PNO Stop for SSID failed"));
} else {
DBG_EVENT_LOG(dhdp, WIFI_EVENT_DRIVER_PNO_REMOVE);
}
if (cfg->sched_scan_req || cfg->sched_scan_running) {
WL_PNO((">>> Sched scan running. Aborting it..\n"));
wl_cfg80211_cancel_scan(cfg);
}
WL_CFG_DRV_LOCK(&cfg->cfgdrv_lock, flags);
cfg->sched_scan_req = NULL;
cfg->sched_scan_running = FALSE;
WL_CFG_DRV_UNLOCK(&cfg->cfgdrv_lock, flags);
return 0;
}
#endif /* WL_SCHED_SCAN */
static void wl_scan_timeout(unsigned long data)
{
wl_event_msg_t msg;
struct bcm_cfg80211 *cfg = (struct bcm_cfg80211 *)data;
struct wireless_dev *wdev = NULL;
struct net_device *ndev = NULL;
struct wl_scan_results *bss_list;
wl_bss_info_t *bi = NULL;
s32 i;
u32 channel;
u64 cur_time = OSL_LOCALTIME_NS();
dhd_pub_t *dhdp = (dhd_pub_t *)(cfg->pub);
unsigned long flags;
#ifdef RTT_SUPPORT
rtt_status_info_t *rtt_status = NULL;
UNUSED_PARAMETER(rtt_status);
#endif /* RTT_SUPPORT */
UNUSED_PARAMETER(cur_time);
WL_CFG_DRV_LOCK(&cfg->cfgdrv_lock, flags);
if (!(cfg->scan_request)) {
WL_ERR(("timer expired but no scan request\n"));
WL_CFG_DRV_UNLOCK(&cfg->cfgdrv_lock, flags);
return;
}
wdev = GET_SCAN_WDEV(cfg->scan_request);
WL_CFG_DRV_UNLOCK(&cfg->cfgdrv_lock, flags);
if (!wdev) {
WL_ERR(("No wireless_dev present\n"));
return;
}
if (dhd_query_bus_erros(dhdp)) {
return;
}
#if defined(DHD_KERNEL_SCHED_DEBUG) && defined(DHD_FW_COREDUMP)
if (dhdp->memdump_enabled == DUMP_MEMFILE_BUGON &&
((cfg->scan_deq_time < cfg->scan_enq_time) ||
dhd_bus_query_dpc_sched_errors(dhdp))) {
WL_ERR(("****SCAN event timeout due to scheduling problem\n"));
/* change g_assert_type to trigger Kernel panic */
g_assert_type = 2;
#ifdef RTT_SUPPORT
rtt_status = GET_RTTSTATE(dhdp);
#endif /* RTT_SUPPORT */
WL_ERR(("***SCAN event timeout. WQ state:0x%x scan_enq_time:"SEC_USEC_FMT
" evt_hdlr_entry_time:"SEC_USEC_FMT" evt_deq_time:"SEC_USEC_FMT
"\nscan_deq_time:"SEC_USEC_FMT" scan_hdlr_cmplt_time:"SEC_USEC_FMT
" scan_cmplt_time:"SEC_USEC_FMT" evt_hdlr_exit_time:"SEC_USEC_FMT
"\ncurrent_time:"SEC_USEC_FMT"\n", work_busy(&cfg->event_work),
GET_SEC_USEC(cfg->scan_enq_time), GET_SEC_USEC(cfg->wl_evt_hdlr_entry_time),
GET_SEC_USEC(cfg->wl_evt_deq_time), GET_SEC_USEC(cfg->scan_deq_time),
GET_SEC_USEC(cfg->scan_hdlr_cmplt_time), GET_SEC_USEC(cfg->scan_cmplt_time),
GET_SEC_USEC(cfg->wl_evt_hdlr_exit_time), GET_SEC_USEC(cur_time)));
if (cfg->scan_enq_time) {
WL_ERR(("Elapsed time(ns): %llu\n", (cur_time - cfg->scan_enq_time)));
}
WL_ERR(("lock_states:[%d:%d:%d:%d:%d:%d]\n",
mutex_is_locked(&cfg->if_sync),
mutex_is_locked(&cfg->usr_sync),
mutex_is_locked(&cfg->pm_sync),
mutex_is_locked(&cfg->scan_sync),
spin_is_locked(&cfg->cfgdrv_lock),
spin_is_locked(&cfg->eq_lock)));
#ifdef RTT_SUPPORT
WL_ERR(("RTT lock_state:[%d]\n",
mutex_is_locked(&rtt_status->rtt_mutex)));
#ifdef WL_NAN
WL_ERR(("RTT and Geofence lock_states:[%d:%d]\n",
mutex_is_locked(&cfg->nancfg.nan_sync),
mutex_is_locked(&(rtt_status)->geofence_mutex)));
#endif /* WL_NAN */
#endif /* RTT_SUPPORT */
/* use ASSERT() to trigger panic */
ASSERT(0);
}
#endif /* DHD_KERNEL_SCHED_DEBUG && DHD_FW_COREDUMP */
dhd_bus_intr_count_dump(dhdp);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 1, 0)) && !defined(CONFIG_MODULES)
/* Print WQ states. Enable only for in-built drivers as the symbol is not exported */
show_workqueue_state();
#endif /* LINUX_VER >= 4.1 && !CONFIG_MODULES */
bss_list = wl_escan_get_buf(cfg, FALSE);
if (!bss_list) {
WL_ERR(("bss_list is null. Didn't receive any partial scan results\n"));
} else {
WL_ERR(("Dump scan buffer:\n"
"scanned AP count (%d)\n", bss_list->count));
bi = next_bss(bss_list, bi);
for_each_bss(bss_list, bi, i) {
channel = wf_chspec_ctlchan(wl_chspec_driver_to_host(bi->chanspec));
WL_ERR(("SSID :%s Channel :%d\n", bi->SSID, channel));
}
}
ndev = wdev_to_wlc_ndev(wdev, cfg);
bzero(&msg, sizeof(wl_event_msg_t));
WL_ERR(("timer expired\n"));
dhdp->scan_timeout_occurred = TRUE;
#ifdef BCMPCIE
(void)dhd_pcie_dump_int_regs(dhdp);
dhd_pcie_dump_rc_conf_space_cap(dhdp);
#endif /* BCMPCIE */
#if 0
if (dhdp->memdump_enabled) {
dhdp->memdump_type = DUMP_TYPE_SCAN_TIMEOUT;
dhd_bus_mem_dump(dhdp);
}
/*
* For the memdump sanity, blocking bus transactions for a while
* Keeping it TRUE causes the sequential private cmd error
*/
dhdp->scan_timeout_occurred = FALSE;
#endif /* DHD_FW_COREDUMP */
msg.event_type = hton32(WLC_E_ESCAN_RESULT);
msg.status = hton32(WLC_E_STATUS_TIMEOUT);
msg.reason = 0xFFFFFFFF;
wl_cfg80211_event(ndev, &msg, NULL);
}
s32 wl_init_scan(struct bcm_cfg80211 *cfg)
{
int err = 0;
cfg->evt_handler[WLC_E_ESCAN_RESULT] = wl_escan_handler;
cfg->escan_info.escan_state = WL_ESCAN_STATE_IDLE;
wl_escan_init_sync_id(cfg);
/* Init scan_timeout timer */
init_timer_compat(&cfg->scan_timeout, wl_scan_timeout, cfg);
wl_cfg80211_set_bcmcfg(cfg);
return err;
}
#ifdef WL_SCHED_SCAN
/* If target scan is not reliable, set the below define to "1" to do a
* full escan
*/
#define FULL_ESCAN_ON_PFN_NET_FOUND 0
static s32
wl_notify_sched_scan_results(struct bcm_cfg80211 *cfg, struct net_device *ndev,
const wl_event_msg_t *e, void *data)
{
wl_pfn_net_info_v1_t *netinfo, *pnetinfo;
wl_pfn_net_info_v2_t *netinfo_v2, *pnetinfo_v2;
struct wiphy *wiphy = bcmcfg_to_wiphy(cfg);
dhd_pub_t *dhdp = (dhd_pub_t *)(cfg->pub);
int err = 0;
struct cfg80211_scan_request *request = NULL;
struct cfg80211_ssid ssid[MAX_PFN_LIST_COUNT];
struct ieee80211_channel *channel = NULL;
int channel_req = 0;
int band = 0;
wl_pfn_scanresults_v1_t *pfn_result_v1 = (wl_pfn_scanresults_v1_t *)data;
wl_pfn_scanresults_v2_t *pfn_result_v2 = (wl_pfn_scanresults_v2_t *)data;
int n_pfn_results = 0;
log_conn_event_t *event_data = NULL;
tlv_log *tlv_data = NULL;
u32 alloc_len, tlv_len;
u32 payload_len;
u8 tmp_buf[DOT11_MAX_SSID_LEN + 1];
WL_DBG(("Enter\n"));
/* These static asserts guarantee v1/v2 net_info and subnet_info are compatible
* in size and SSID offset, allowing v1 to be used below except for the results
* fields themselves (status, count, offset to netinfo).
*/
STATIC_ASSERT(sizeof(wl_pfn_net_info_v1_t) == sizeof(wl_pfn_net_info_v2_t));
STATIC_ASSERT(sizeof(wl_pfn_lnet_info_v1_t) == sizeof(wl_pfn_lnet_info_v2_t));
STATIC_ASSERT(sizeof(wl_pfn_subnet_info_v1_t) == sizeof(wl_pfn_subnet_info_v2_t));
STATIC_ASSERT(OFFSETOF(wl_pfn_subnet_info_v1_t, SSID) ==
OFFSETOF(wl_pfn_subnet_info_v2_t, u.SSID));
/* Extract the version-specific items */
if (pfn_result_v1->version == PFN_SCANRESULT_VERSION_V1) {
n_pfn_results = pfn_result_v1->count;
pnetinfo = pfn_result_v1->netinfo;
WL_INFORM_MEM(("PFN NET FOUND event. count:%d \n", n_pfn_results));
if (n_pfn_results > 0) {
int i;
if (n_pfn_results > MAX_PFN_LIST_COUNT)
n_pfn_results = MAX_PFN_LIST_COUNT;
bzero(&ssid, sizeof(ssid));
request = (struct cfg80211_scan_request *)MALLOCZ(cfg->osh,
sizeof(*request) + sizeof(*request->channels) * n_pfn_results);
channel = (struct ieee80211_channel *)MALLOCZ(cfg->osh,
(sizeof(struct ieee80211_channel) * n_pfn_results));
if (!request || !channel) {
WL_ERR(("No memory"));
err = -ENOMEM;
goto out_err;
}
request->wiphy = wiphy;
if (DBG_RING_ACTIVE(dhdp, DHD_EVENT_RING_ID)) {
alloc_len = sizeof(log_conn_event_t) + DOT11_MAX_SSID_LEN +
sizeof(uint16) + sizeof(int16);
event_data = (log_conn_event_t *)MALLOC(cfg->osh, alloc_len);
if (!event_data) {
WL_ERR(("%s: failed to allocate the log_conn_event_t with "
"length(%d)\n", __func__, alloc_len));
goto out_err;
}
tlv_len = 3 * sizeof(tlv_log);
event_data->tlvs = (tlv_log *)MALLOC(cfg->osh, tlv_len);
if (!event_data->tlvs) {
WL_ERR(("%s: failed to allocate the tlv_log with "
"length(%d)\n", __func__, tlv_len));
goto out_err;
}
}
for (i = 0; i < n_pfn_results; i++) {
netinfo = &pnetinfo[i];
if (!netinfo) {
WL_ERR(("Invalid netinfo ptr. index:%d", i));
err = -EINVAL;
goto out_err;
}
if (netinfo->pfnsubnet.SSID_len > DOT11_MAX_SSID_LEN) {
WL_ERR(("Wrong SSID length:%d\n",
netinfo->pfnsubnet.SSID_len));
err = -EINVAL;
goto out_err;
}
/* In previous step max SSID_len limited to DOT11_MAX_SSID_LEN
* and tmp_buf size is DOT11_MAX_SSID_LEN+1
*/
(void)memcpy_s(tmp_buf, DOT11_MAX_SSID_LEN,
netinfo->pfnsubnet.SSID, netinfo->pfnsubnet.SSID_len);
tmp_buf[netinfo->pfnsubnet.SSID_len] = '\0';
WL_PNO((">>> SSID:%s Channel:%d \n",
tmp_buf, netinfo->pfnsubnet.channel));
/* PFN result doesn't have all the info which are required by
* the supplicant. (For e.g IEs) Do a target Escan so that
* sched scan results are reported via wl_inform_single_bss in
* the required format. Escan does require the scan request in
* the form of cfg80211_scan_request. For timebeing, create
* cfg80211_scan_request one out of the received PNO event.
*/
ssid[i].ssid_len = netinfo->pfnsubnet.SSID_len;
/* Returning void as ssid[i].ssid_len is limited to max of
* DOT11_MAX_SSID_LEN
*/
(void)memcpy_s(ssid[i].ssid, IEEE80211_MAX_SSID_LEN,
netinfo->pfnsubnet.SSID, ssid[i].ssid_len);
request->n_ssids++;
channel_req = netinfo->pfnsubnet.channel;
band = (channel_req <= CH_MAX_2G_CHANNEL) ? NL80211_BAND_2GHZ
: NL80211_BAND_5GHZ;
channel[i].center_freq =
ieee80211_channel_to_frequency(channel_req, band);
channel[i].band = band;
channel[i].flags |= IEEE80211_CHAN_NO_HT40;
request->channels[i] = &channel[i];
request->n_channels++;
if (DBG_RING_ACTIVE(dhdp, DHD_EVENT_RING_ID)) {
payload_len = sizeof(log_conn_event_t);
event_data->event = WIFI_EVENT_DRIVER_PNO_NETWORK_FOUND;
tlv_data = event_data->tlvs;
/* ssid */
tlv_data->tag = WIFI_TAG_SSID;
tlv_data->len = ssid[i].ssid_len;
(void)memcpy_s(tlv_data->value, DOT11_MAX_SSID_LEN,
ssid[i].ssid, ssid[i].ssid_len);
payload_len += TLV_LOG_SIZE(tlv_data);
tlv_data = TLV_LOG_NEXT(tlv_data);
/* channel */
tlv_data->tag = WIFI_TAG_CHANNEL;
tlv_data->len = sizeof(uint16);
(void)memcpy_s(tlv_data->value, sizeof(uint16),
&channel_req, sizeof(uint16));
payload_len += TLV_LOG_SIZE(tlv_data);
tlv_data = TLV_LOG_NEXT(tlv_data);
/* rssi */
tlv_data->tag = WIFI_TAG_RSSI;
tlv_data->len = sizeof(int16);
(void)memcpy_s(tlv_data->value, sizeof(int16),
&netinfo->RSSI, sizeof(int16));
payload_len += TLV_LOG_SIZE(tlv_data);
tlv_data = TLV_LOG_NEXT(tlv_data);
dhd_os_push_push_ring_data(dhdp, DHD_EVENT_RING_ID,
&event_data->event, payload_len);
}
}
/* assign parsed ssid array */
if (request->n_ssids)
request->ssids = &ssid[0];
if (wl_get_drv_status_all(cfg, SCANNING)) {
/* Abort any on-going scan */
wl_cfg80211_cancel_scan(cfg);
}
if (wl_get_p2p_status(cfg, DISCOVERY_ON)) {
WL_PNO((">>> P2P discovery was ON. Disabling it\n"));
err = wl_cfgp2p_discover_enable_search(cfg, false);
if (unlikely(err)) {
wl_clr_drv_status(cfg, SCANNING, ndev);
goto out_err;
}
p2p_scan(cfg) = false;
}
wl_set_drv_status(cfg, SCANNING, ndev);
#if FULL_ESCAN_ON_PFN_NET_FOUND
WL_PNO((">>> Doing Full ESCAN on PNO event\n"));
err = wl_do_escan(cfg, wiphy, ndev, NULL);
#else
WL_PNO((">>> Doing targeted ESCAN on PNO event\n"));
err = wl_do_escan(cfg, wiphy, ndev, request);
#endif // endif
if (err) {
wl_clr_drv_status(cfg, SCANNING, ndev);
goto out_err;
}
DBG_EVENT_LOG(dhdp, WIFI_EVENT_DRIVER_PNO_SCAN_REQUESTED);
cfg->sched_scan_running = TRUE;
}
else {
WL_ERR(("FALSE PNO Event. (pfn_count == 0) \n"));
}
} else if (pfn_result_v2->version == PFN_SCANRESULT_VERSION_V2) {
n_pfn_results = pfn_result_v2->count;
pnetinfo_v2 = (wl_pfn_net_info_v2_t *)pfn_result_v2->netinfo;
if (e->event_type == WLC_E_PFN_NET_LOST) {
WL_PNO(("Do Nothing %d\n", e->event_type));
return 0;
}
WL_INFORM_MEM(("PFN NET FOUND event. count:%d \n", n_pfn_results));
if (n_pfn_results > 0) {
int i;
if (n_pfn_results > MAX_PFN_LIST_COUNT)
n_pfn_results = MAX_PFN_LIST_COUNT;
bzero(&ssid, sizeof(ssid));
request = (struct cfg80211_scan_request *)MALLOCZ(cfg->osh,
sizeof(*request) + sizeof(*request->channels) * n_pfn_results);
channel = (struct ieee80211_channel *)MALLOCZ(cfg->osh,
(sizeof(struct ieee80211_channel) * n_pfn_results));
if (!request || !channel) {
WL_ERR(("No memory"));
err = -ENOMEM;
goto out_err;
}
request->wiphy = wiphy;
if (DBG_RING_ACTIVE(dhdp, DHD_EVENT_RING_ID)) {
alloc_len = sizeof(log_conn_event_t) + DOT11_MAX_SSID_LEN +
sizeof(uint16) + sizeof(int16);
event_data = (log_conn_event_t *)MALLOC(cfg->osh, alloc_len);
if (!event_data) {
WL_ERR(("%s: failed to allocate the log_conn_event_t with "
"length(%d)\n", __func__, alloc_len));
goto out_err;
}
tlv_len = 3 * sizeof(tlv_log);
event_data->tlvs = (tlv_log *)MALLOC(cfg->osh, tlv_len);
if (!event_data->tlvs) {
WL_ERR(("%s: failed to allocate the tlv_log with "
"length(%d)\n", __func__, tlv_len));
goto out_err;
}
}
for (i = 0; i < n_pfn_results; i++) {
netinfo_v2 = &pnetinfo_v2[i];
if (!netinfo_v2) {
WL_ERR(("Invalid netinfo ptr. index:%d", i));
err = -EINVAL;
goto out_err;
}
WL_PNO((">>> SSID:%s Channel:%d \n",
netinfo_v2->pfnsubnet.u.SSID,
netinfo_v2->pfnsubnet.channel));
/* PFN result doesn't have all the info which are required by the
* supplicant. (For e.g IEs) Do a target Escan so that sched scan
* results are reported via wl_inform_single_bss in the required
* format. Escan does require the scan request in the form of
* cfg80211_scan_request. For timebeing, create
* cfg80211_scan_request one out of the received PNO event.
*/
ssid[i].ssid_len = MIN(DOT11_MAX_SSID_LEN,
netinfo_v2->pfnsubnet.SSID_len);
/* max ssid_len as in previous step DOT11_MAX_SSID_LEN is same
* as DOT11_MAX_SSID_LEN = 32
*/
(void)memcpy_s(ssid[i].ssid, IEEE80211_MAX_SSID_LEN,
netinfo_v2->pfnsubnet.u.SSID, ssid[i].ssid_len);
request->n_ssids++;
channel_req = netinfo_v2->pfnsubnet.channel;
band = (channel_req <= CH_MAX_2G_CHANNEL) ? NL80211_BAND_2GHZ
: NL80211_BAND_5GHZ;
channel[i].center_freq =
ieee80211_channel_to_frequency(channel_req, band);
channel[i].band = band;
channel[i].flags |= IEEE80211_CHAN_NO_HT40;
request->channels[i] = &channel[i];
request->n_channels++;
if (DBG_RING_ACTIVE(dhdp, DHD_EVENT_RING_ID)) {
payload_len = sizeof(log_conn_event_t);
event_data->event = WIFI_EVENT_DRIVER_PNO_NETWORK_FOUND;
tlv_data = event_data->tlvs;
/* ssid */
tlv_data->tag = WIFI_TAG_SSID;
tlv_data->len = netinfo_v2->pfnsubnet.SSID_len;
(void)memcpy_s(tlv_data->value, DOT11_MAX_SSID_LEN,
ssid[i].ssid, ssid[i].ssid_len);
payload_len += TLV_LOG_SIZE(tlv_data);
tlv_data = TLV_LOG_NEXT(tlv_data);
/* channel */
tlv_data->tag = WIFI_TAG_CHANNEL;
tlv_data->len = sizeof(uint16);
(void)memcpy_s(tlv_data->value, sizeof(uint16),
&channel_req, sizeof(uint16));
payload_len += TLV_LOG_SIZE(tlv_data);
tlv_data = TLV_LOG_NEXT(tlv_data);
/* rssi */
tlv_data->tag = WIFI_TAG_RSSI;
tlv_data->len = sizeof(int16);
(void)memcpy_s(tlv_data->value, sizeof(uint16),
&netinfo_v2->RSSI, sizeof(int16));
payload_len += TLV_LOG_SIZE(tlv_data);
tlv_data = TLV_LOG_NEXT(tlv_data);
dhd_os_push_push_ring_data(dhdp, DHD_EVENT_RING_ID,
&event_data->event, payload_len);
}
}
/* assign parsed ssid array */
if (request->n_ssids)
request->ssids = &ssid[0];
if (wl_get_drv_status_all(cfg, SCANNING)) {
/* Abort any on-going scan */
wl_cfg80211_cancel_scan(cfg);
}
if (wl_get_p2p_status(cfg, DISCOVERY_ON)) {
WL_PNO((">>> P2P discovery was ON. Disabling it\n"));
err = wl_cfgp2p_discover_enable_search(cfg, false);
if (unlikely(err)) {
wl_clr_drv_status(cfg, SCANNING, ndev);
goto out_err;
}
p2p_scan(cfg) = false;
}
wl_set_drv_status(cfg, SCANNING, ndev);
#if FULL_ESCAN_ON_PFN_NET_FOUND
WL_PNO((">>> Doing Full ESCAN on PNO event\n"));
err = wl_do_escan(cfg, wiphy, ndev, NULL);
#else
WL_PNO((">>> Doing targeted ESCAN on PNO event\n"));
err = wl_do_escan(cfg, wiphy, ndev, request);
#endif // endif
if (err) {
wl_clr_drv_status(cfg, SCANNING, ndev);
goto out_err;
}
DBG_EVENT_LOG(dhdp, WIFI_EVENT_DRIVER_PNO_SCAN_REQUESTED);
cfg->sched_scan_running = TRUE;
}
else {
WL_ERR(("FALSE PNO Event. (pfn_count == 0) \n"));
}
} else {
WL_ERR(("Unsupported version %d, expected %d or %d\n", pfn_result_v1->version,
PFN_SCANRESULT_VERSION_V1, PFN_SCANRESULT_VERSION_V2));
return 0;
}
out_err:
if (request) {
MFREE(cfg->osh, request,
sizeof(*request) + sizeof(*request->channels) * n_pfn_results);
}
if (channel) {
MFREE(cfg->osh, channel,
(sizeof(struct ieee80211_channel) * n_pfn_results));
}
if (event_data) {
if (event_data->tlvs) {
MFREE(cfg->osh, event_data->tlvs, tlv_len);
}
MFREE(cfg->osh, event_data, alloc_len);
}
return err;
}
#endif /* WL_SCHED_SCAN */
#ifdef PNO_SUPPORT
s32
wl_notify_pfn_status(struct bcm_cfg80211 *cfg, bcm_struct_cfgdev *cfgdev,
const wl_event_msg_t *e, void *data)
{
struct net_device *ndev = NULL;
#ifdef GSCAN_SUPPORT
void *ptr;
int send_evt_bytes = 0;
u32 event = be32_to_cpu(e->event_type);
struct wiphy *wiphy = bcmcfg_to_wiphy(cfg);
#endif /* GSCAN_SUPPORT */
WL_INFORM_MEM((">>> PNO Event\n"));
if (!data) {
WL_ERR(("Data received is NULL!\n"));
return 0;
}
ndev = cfgdev_to_wlc_ndev(cfgdev, cfg);
#ifdef GSCAN_SUPPORT
ptr = dhd_dev_process_epno_result(ndev, data, event, &send_evt_bytes);
if (ptr) {
wl_cfgvendor_send_async_event(wiphy, ndev,
GOOGLE_SCAN_EPNO_EVENT, ptr, send_evt_bytes);
MFREE(cfg->osh, ptr, send_evt_bytes);
}
if (!dhd_dev_is_legacy_pno_enabled(ndev))
return 0;
#endif /* GSCAN_SUPPORT */
#ifndef WL_SCHED_SCAN
mutex_lock(&cfg->usr_sync);
/* TODO: Use cfg80211_sched_scan_results(wiphy); */
CFG80211_DISCONNECTED(ndev, 0, NULL, 0, false, GFP_KERNEL);
mutex_unlock(&cfg->usr_sync);
#else
/* If cfg80211 scheduled scan is supported, report the pno results via sched
* scan results
*/
wl_notify_sched_scan_results(cfg, ndev, e, data);
#endif /* WL_SCHED_SCAN */
return 0;
}
#endif /* PNO_SUPPORT */
#ifdef GSCAN_SUPPORT
s32
wl_notify_gscan_event(struct bcm_cfg80211 *cfg, bcm_struct_cfgdev *cfgdev,
const wl_event_msg_t *e, void *data)
{
s32 err = 0;
u32 event = be32_to_cpu(e->event_type);
void *ptr = NULL;
int send_evt_bytes = 0;
int event_type;
struct net_device *ndev = cfgdev_to_wlc_ndev(cfgdev, cfg);
struct wiphy *wiphy = bcmcfg_to_wiphy(cfg);
u32 len = ntoh32(e->datalen);
u32 buf_len = 0;
switch (event) {
case WLC_E_PFN_BEST_BATCHING:
err = dhd_dev_retrieve_batch_scan(ndev);
if (err < 0) {
WL_ERR(("Batch retrieval already in progress %d\n", err));
} else {
event_type = WIFI_SCAN_THRESHOLD_NUM_SCANS;
if (data && len) {
event_type = *((int *)data);
}
wl_cfgvendor_send_async_event(wiphy, ndev,
GOOGLE_GSCAN_BATCH_SCAN_EVENT,
&event_type, sizeof(int));
}
break;
case WLC_E_PFN_SCAN_COMPLETE:
event_type = WIFI_SCAN_COMPLETE;
wl_cfgvendor_send_async_event(wiphy, ndev,
GOOGLE_SCAN_COMPLETE_EVENT,
&event_type, sizeof(int));
break;
case WLC_E_PFN_BSSID_NET_FOUND:
ptr = dhd_dev_hotlist_scan_event(ndev, data, &send_evt_bytes,
HOTLIST_FOUND, &buf_len);
if (ptr) {
wl_cfgvendor_send_hotlist_event(wiphy, ndev,
ptr, send_evt_bytes, GOOGLE_GSCAN_GEOFENCE_FOUND_EVENT);
dhd_dev_gscan_hotlist_cache_cleanup(ndev, HOTLIST_FOUND);
} else {
err = -ENOMEM;
}
break;
case WLC_E_PFN_BSSID_NET_LOST:
/* WLC_E_PFN_BSSID_NET_LOST is conflict shared with WLC_E_PFN_SCAN_ALLGONE
* We currently do not use WLC_E_PFN_SCAN_ALLGONE, so if we get it, ignore
*/
if (len) {
ptr = dhd_dev_hotlist_scan_event(ndev, data, &send_evt_bytes,
HOTLIST_LOST, &buf_len);
if (ptr) {
wl_cfgvendor_send_hotlist_event(wiphy, ndev,
ptr, send_evt_bytes, GOOGLE_GSCAN_GEOFENCE_LOST_EVENT);
dhd_dev_gscan_hotlist_cache_cleanup(ndev, HOTLIST_LOST);
MFREE(cfg->osh, ptr, buf_len);
} else {
err = -ENOMEM;
}
} else {
err = -EINVAL;
}
break;
case WLC_E_PFN_GSCAN_FULL_RESULT:
ptr = dhd_dev_process_full_gscan_result(ndev, data, len, &send_evt_bytes);
if (ptr) {
wl_cfgvendor_send_async_event(wiphy, ndev,
GOOGLE_SCAN_FULL_RESULTS_EVENT, ptr, send_evt_bytes);
MFREE(cfg->osh, ptr, send_evt_bytes);
} else {
err = -ENOMEM;
}
break;
case WLC_E_PFN_SSID_EXT:
ptr = dhd_dev_process_epno_result(ndev, data, event, &send_evt_bytes);
if (ptr) {
wl_cfgvendor_send_async_event(wiphy, ndev,
GOOGLE_SCAN_EPNO_EVENT, ptr, send_evt_bytes);
MFREE(cfg->osh, ptr, send_evt_bytes);
} else {
err = -ENOMEM;
}
break;
default:
WL_ERR(("Unknown event %d\n", event));
break;
}
return err;
}
#endif /* GSCAN_SUPPORT */
void wl_cfg80211_set_passive_scan(struct net_device *dev, char *command)
{
struct bcm_cfg80211 *cfg = wl_get_cfg(dev);
if (strcmp(command, "SCAN-ACTIVE") == 0) {
cfg->active_scan = 1;
} else if (strcmp(command, "SCAN-PASSIVE") == 0) {
cfg->active_scan = 0;
} else
WL_ERR(("Unknown command \n"));
return;
}