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nest-open-source / manifest_repos / dhd-driver / refs/heads/main / . / bcmdhd.101.10.361.x / wl_cfgscan.c
blob: 47403d06e47c19bc451095b002db07b568a30893 [file] [log] [blame]
/*
* Linux cfg80211 driver scan related code
*
* Copyright (C) 2020, 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.
*
*
* <<Broadcom-WL-IPTag/Dual:>>
*/
/* */
#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>
#if defined(CONFIG_TIZEN)
#include <linux/net_stat_tizen.h>
#endif /* CONFIG_TIZEN */
#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 <wl_cfgvif.h>
#include <bcmdevs.h>
#ifdef OEM_ANDROID
#include <wl_android.h>
#endif
#if defined(BCMDONGLEHOST)
#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>
#endif /* defined(BCMDONGLEHOST) */
#ifdef BCMPCIE
#include <dhd_flowring.h>
#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
#define SCAN_WAKE_LOCK_MARGIN_MS 500
#if defined(WL_CFG80211_P2P_DEV_IF)
#define CFG80211_READY_ON_CHANNEL(cfgdev, cookie, channel, channel_type, duration, flags) \
cfg80211_ready_on_channel(cfgdev, cookie, channel, duration, GFP_KERNEL);
#else
#define CFG80211_READY_ON_CHANNEL(cfgdev, cookie, channel, channel_type, duration, flags) \
cfg80211_ready_on_channel(cfgdev, cookie, channel, channel_type, duration, GFP_KERNEL);
#endif /* WL_CFG80211_P2P_DEV_IF */
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0))
#define CFG80211_SCHED_SCAN_STOPPED(wiphy, schedscan_req) \
cfg80211_sched_scan_stopped(wiphy, schedscan_req->reqid);
#else
#define CFG80211_SCHED_SCAN_STOPPED(wiphy, schedscan_req) \
cfg80211_sched_scan_stopped(wiphy);
#endif /* KERNEL > 4.11.0 */
#ifdef DHD_GET_VALID_CHANNELS
#define IS_DFS(chaninfo) ((chaninfo & WL_CHAN_RADAR) || \
(chaninfo & WL_CHAN_PASSIVE))
#endif /* DHD_GET_VALID_CHANNELS */
#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 CUSTOMER_HW4_DEBUG
bool wl_scan_timeout_dbg_enabled = 0;
#endif /* CUSTOMER_HW4_DEBUG */
#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);
static s32 wl_notify_escan_complete(struct bcm_cfg80211 *cfg,
struct net_device *ndev, bool aborted);
void wl_cfgscan_scan_abort(struct bcm_cfg80211 *cfg);
static void _wl_cfgscan_cancel_scan(struct bcm_cfg80211 *cfg);
#ifdef ESCAN_CHANNEL_CACHE
void reset_roam_cache(struct bcm_cfg80211 *cfg);
void add_roam_cache(struct bcm_cfg80211 *cfg, wl_bss_info_t *bi);
int get_roam_channel_list(struct bcm_cfg80211 *cfg, chanspec_t target_chan, chanspec_t *channels,
int n_channels, const wlc_ssid_t *ssid, int ioctl_ver);
void set_roam_band(int band);
#endif /* ESCAN_CHANNEL_CACHE */
#ifdef ROAM_CHANNEL_CACHE
void print_roam_cache(struct bcm_cfg80211 *cfg);
#endif /* ROAM_CHANNEL_CACHE */
extern int passive_channel_skip;
#ifdef DUAL_ESCAN_RESULT_BUFFER
static wl_scan_results_t *
wl_escan_get_buf(struct bcm_cfg80211 *cfg, bool aborted)
{
u8 index;
if (aborted) {
if (cfg->escan_info.escan_type[0] == cfg->escan_info.escan_type[1]) {
index = (cfg->escan_info.cur_sync_id + 1)%SCAN_BUF_CNT;
} else {
index = (cfg->escan_info.cur_sync_id)%SCAN_BUF_CNT;
}
} else {
index = (cfg->escan_info.cur_sync_id)%SCAN_BUF_CNT;
}
return (wl_scan_results_t *)cfg->escan_info.escan_buf[index];
}
static int
wl_escan_check_sync_id(struct bcm_cfg80211 *cfg, s32 status, u16 result_id, u16 wl_id)
{
if (result_id != wl_id) {
WL_ERR(("ESCAN sync id mismatch :status :%d "
"cur_sync_id:%d coming sync_id:%d\n",
status, wl_id, result_id));
#ifdef DHD_SEND_HANG_ESCAN_SYNCID_MISMATCH
if (cfg->escan_info.prev_escan_aborted == FALSE) {
wl_cfg80211_handle_hang_event(bcmcfg_to_prmry_ndev(cfg),
HANG_REASON_ESCAN_SYNCID_MISMATCH, DUMP_TYPE_ESCAN_SYNCID_MISMATCH);
}
#endif /* DHD_SEND_HANG_ESCAN_SYNCID_MISMATCH */
return -1;
} else {
return 0;
}
}
#define wl_escan_increment_sync_id(a, b) ((a)->escan_info.cur_sync_id += b)
#define wl_escan_init_sync_id(a) ((a)->escan_info.cur_sync_id = 0)
#else
#define wl_escan_get_buf(a, b) ((wl_scan_results_t *) (a)->escan_info.escan_buf)
#define wl_escan_check_sync_id(a, b, c, d) 0
#define wl_escan_increment_sync_id(a, b)
#define wl_escan_init_sync_id(a)
#endif /* DUAL_ESCAN_RESULT_BUFFER */
/*
* information element utilities
*/
static void wl_rst_ie(struct bcm_cfg80211 *cfg)
{
struct wl_ie *ie = wl_to_ie(cfg);
ie->offset = 0;
bzero(ie->buf, sizeof(ie->buf));
}
static void wl_update_hidden_ap_ie(wl_bss_info_t *bi, const u8 *ie_stream, u32 *ie_size,
bool update_ssid)
{
u8 *ssidie;
int32 ssid_len = MIN(bi->SSID_len, DOT11_MAX_SSID_LEN);
int32 remaining_ie_buf_len, available_buffer_len, unused_buf_len;
/* cfg80211_find_ie defined in kernel returning const u8 */
GCC_DIAGNOSTIC_PUSH_SUPPRESS_CAST();
ssidie = (u8 *)cfg80211_find_ie(WLAN_EID_SSID, ie_stream, *ie_size);
GCC_DIAGNOSTIC_POP();
/* ERROR out if
* 1. No ssid IE is FOUND or
* 2. New ssid length is > what was allocated for existing ssid (as
* we do not want to overwrite the rest of the IEs) or
* 3. If in case of erroneous buffer input where ssid length doesnt match the space
* allocated to it.
*/
if (!ssidie) {
return;
}
available_buffer_len = ((int)(*ie_size)) - (ssidie + 2 - ie_stream);
remaining_ie_buf_len = available_buffer_len - (int)ssidie[1];
unused_buf_len = WL_EXTRA_BUF_MAX - (4 + bi->length + *ie_size);
if (ssidie[1] > available_buffer_len) {
WL_ERR_MEM(("wl_update_hidden_ap_ie: skip wl_update_hidden_ap_ie : overflow\n"));
return;
}
/* ssidie[1] can be different with bi->SSID_len only if roaming status
* On scanning the values will be same each other.
*/
if (ssidie[1] != ssid_len) {
if (ssidie[1]) {
WL_ERR_RLMT(("wl_update_hidden_ap_ie: Wrong SSID len: %d != %d\n",
ssidie[1], bi->SSID_len));
}
/* ssidie[1] is 1 in beacon on CISCO hidden networks. */
/*
* The bss info in firmware gets updated from beacon and probe resp.
* In case of hidden network, the bss_info that got updated by beacon,
* will not carry SSID and this can result in cfg80211_get_bss not finding a match.
* so include the SSID element.
*/
if ((update_ssid && (ssid_len > ssidie[1])) && (unused_buf_len > ssid_len)) {
WL_INFORM_MEM(("Changing the SSID Info.\n"));
memmove(ssidie + ssid_len + 2,
(ssidie + 2) + ssidie[1],
remaining_ie_buf_len);
memcpy(ssidie + 2, bi->SSID, ssid_len);
*ie_size = *ie_size + ssid_len - ssidie[1];
ssidie[1] = ssid_len;
} else if (ssid_len < ssidie[1]) {
WL_ERR_MEM(("wl_update_hidden_ap_ie: Invalid SSID len: %d < %d\n",
bi->SSID_len, ssidie[1]));
}
return;
}
if (*(ssidie + 2) == '\0')
memcpy(ssidie + 2, bi->SSID, ssid_len);
return;
}
static s32 wl_mrg_ie(struct bcm_cfg80211 *cfg, u8 *ie_stream, u16 ie_size)
{
struct wl_ie *ie = wl_to_ie(cfg);
s32 err = 0;
if (unlikely(ie->offset + ie_size > WL_TLV_INFO_MAX)) {
WL_ERR(("ei_stream crosses buffer boundary\n"));
return -ENOSPC;
}
memcpy(&ie->buf[ie->offset], ie_stream, ie_size);
ie->offset += ie_size;
return err;
}
static s32 wl_cp_ie(struct bcm_cfg80211 *cfg, u8 *dst, u16 dst_size)
{
struct wl_ie *ie = wl_to_ie(cfg);
s32 err = 0;
if (unlikely(ie->offset > dst_size)) {
WL_ERR(("dst_size is not enough\n"));
return -ENOSPC;
}
memcpy(dst, &ie->buf[0], ie->offset);
return err;
}
static u32 wl_get_ielen(struct bcm_cfg80211 *cfg)
{
struct wl_ie *ie = wl_to_ie(cfg);
return ie->offset;
}
s32 wl_inform_single_bss(struct bcm_cfg80211 *cfg, wl_bss_info_t *bi, bool update_ssid)
{
struct wiphy *wiphy = bcmcfg_to_wiphy(cfg);
struct ieee80211_mgmt *mgmt;
struct ieee80211_channel *channel;
struct wl_cfg80211_bss_info *notif_bss_info;
struct wl_scan_req *sr = wl_to_sr(cfg);
struct beacon_proberesp *beacon_proberesp;
struct cfg80211_bss *cbss = NULL;
dhd_pub_t *dhdp = (dhd_pub_t *)(cfg->pub);
log_conn_event_t *event_data = NULL;
tlv_log *tlv_data = NULL;
u32 alloc_len;
u32 payload_len;
s32 mgmt_type;
s32 signal;
u32 freq;
s32 err = 0;
gfp_t aflags;
u8 tmp_buf[IEEE80211_MAX_SSID_LEN + 1];
chanspec_t chanspec;
if (unlikely(dtoh32(bi->length) > WL_BSS_INFO_MAX)) {
WL_DBG(("Beacon is larger than buffer. Discarding\n"));
return err;
}
if (bi->SSID_len > IEEE80211_MAX_SSID_LEN) {
WL_ERR(("wrong SSID len:%d\n", bi->SSID_len));
return -EINVAL;
}
aflags = (in_atomic()) ? GFP_ATOMIC : GFP_KERNEL;
notif_bss_info = (struct wl_cfg80211_bss_info *)MALLOCZ(cfg->osh,
sizeof(*notif_bss_info) + sizeof(*mgmt) - sizeof(u8) + WL_BSS_INFO_MAX);
if (unlikely(!notif_bss_info)) {
WL_ERR(("notif_bss_info alloc failed\n"));
return -ENOMEM;
}
/* Check for all currently supported bands */
if (!(
#ifdef WL_6G_BAND
CHSPEC_IS6G(bi->chanspec) ||
#endif /* WL_6G_BAND */
CHSPEC_IS5G(bi->chanspec) || CHSPEC_IS2G(bi->chanspec))) {
WL_ERR(("No valid band"));
MFREE(cfg->osh, notif_bss_info, sizeof(*notif_bss_info)
+ sizeof(*mgmt) - sizeof(u8) + WL_BSS_INFO_MAX);
return -EINVAL;
}
mgmt = (struct ieee80211_mgmt *)notif_bss_info->frame_buf;
chanspec = wl_chspec_driver_to_host(bi->chanspec);
notif_bss_info->channel = wf_chspec_ctlchan(chanspec);
notif_bss_info->band = CHSPEC_BAND(bi->chanspec);
notif_bss_info->rssi = dtoh16(bi->RSSI);
#if defined(RSSIAVG)
notif_bss_info->rssi = wl_get_avg_rssi(&cfg->g_rssi_cache_ctrl, &bi->BSSID);
if (notif_bss_info->rssi == RSSI_MINVAL)
notif_bss_info->rssi = MIN(dtoh16(bi->RSSI), RSSI_MAXVAL);
#endif
#if defined(RSSIOFFSET)
notif_bss_info->rssi = wl_update_rssi_offset(bcmcfg_to_prmry_ndev(cfg), notif_bss_info->rssi);
#endif
#if !defined(RSSIAVG) && !defined(RSSIOFFSET)
// terence 20150419: limit the max. rssi to -2 or the bss will be filtered out in android OS
notif_bss_info->rssi = MIN(notif_bss_info->rssi, RSSI_MAXVAL);
#endif
memcpy(mgmt->bssid, &bi->BSSID, ETHER_ADDR_LEN);
mgmt_type = cfg->active_scan ?
IEEE80211_STYPE_PROBE_RESP : IEEE80211_STYPE_BEACON;
if (!memcmp(bi->SSID, sr->ssid.SSID, bi->SSID_len)) {
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | mgmt_type);
}
beacon_proberesp = cfg->active_scan ?
(struct beacon_proberesp *)&mgmt->u.probe_resp :
(struct beacon_proberesp *)&mgmt->u.beacon;
beacon_proberesp->timestamp = 0;
beacon_proberesp->beacon_int = cpu_to_le16(bi->beacon_period);
beacon_proberesp->capab_info = cpu_to_le16(bi->capability);
wl_rst_ie(cfg);
wl_update_hidden_ap_ie(bi, ((u8 *) bi) + bi->ie_offset, &bi->ie_length, update_ssid);
wl_mrg_ie(cfg, ((u8 *) bi) + bi->ie_offset, bi->ie_length);
wl_cp_ie(cfg, beacon_proberesp->variable, WL_BSS_INFO_MAX -
offsetof(struct wl_cfg80211_bss_info, frame_buf));
notif_bss_info->frame_len = offsetof(struct ieee80211_mgmt,
u.beacon.variable) + wl_get_ielen(cfg);
freq = wl_channel_to_frequency(notif_bss_info->channel, notif_bss_info->band);
if (freq == 0) {
WL_ERR(("Invalid channel, failed to change channel to freq\n"));
MFREE(cfg->osh, notif_bss_info, sizeof(*notif_bss_info)
+ sizeof(*mgmt) - sizeof(u8) + WL_BSS_INFO_MAX);
return -EINVAL;
}
channel = ieee80211_get_channel(wiphy, freq);
memcpy(tmp_buf, bi->SSID, bi->SSID_len);
tmp_buf[bi->SSID_len] = '\0';
WL_SCAN(("BSSID %pM, channel %3d(%3d %3sMHz), rssi %3d, capa 0x%-4x, mgmt_type %d, "
"frame_len %3d, SSID \"%s\"\n",
&bi->BSSID, notif_bss_info->channel, CHSPEC_CHANNEL(chanspec),
CHSPEC_IS20(chanspec)?"20":
CHSPEC_IS40(chanspec)?"40":
CHSPEC_IS80(chanspec)?"80":
CHSPEC_IS160(chanspec)?"160":"??",
notif_bss_info->rssi, mgmt->u.beacon.capab_info, mgmt_type,
notif_bss_info->frame_len, tmp_buf));
if (unlikely(!channel)) {
WL_ERR(("ieee80211_get_channel error\n"));
MFREE(cfg->osh, notif_bss_info, sizeof(*notif_bss_info)
+ sizeof(*mgmt) - sizeof(u8) + WL_BSS_INFO_MAX);
return -EINVAL;
}
signal = notif_bss_info->rssi * 100;
if (!mgmt->u.probe_resp.timestamp) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
struct osl_timespec ts;
osl_get_monotonic_boottime(&ts);
mgmt->u.probe_resp.timestamp = ((u64)ts.tv_sec*1000000)
+ ts.tv_nsec / 1000;
#else
struct osl_timespec tv;
osl_do_gettimeofday(&tv);
mgmt->u.probe_resp.timestamp = ((u64)tv.tv_sec*1000000)
+ tv.tv_usec;
#endif
}
cbss = cfg80211_inform_bss_frame(wiphy, channel, mgmt,
le16_to_cpu(notif_bss_info->frame_len), signal, aflags);
if (unlikely(!cbss)) {
WL_ERR(("cfg80211_inform_bss_frame error bssid " MACDBG " channel %d \n",
MAC2STRDBG((u8*)(&bi->BSSID)), notif_bss_info->channel));
err = -EINVAL;
goto out_err;
}
CFG80211_PUT_BSS(wiphy, cbss);
if (CAN_SLEEP() && DBG_RING_ACTIVE(dhdp, DHD_EVENT_RING_ID) &&
(cfg->sched_scan_req && !cfg->scan_request)) {
alloc_len = sizeof(log_conn_event_t) + (3 * sizeof(tlv_log)) +
IEEE80211_MAX_SSID_LEN + sizeof(uint16) +
sizeof(int16);
event_data = (log_conn_event_t *)MALLOCZ(dhdp->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;
}
payload_len = sizeof(log_conn_event_t);
event_data->event = WIFI_EVENT_DRIVER_PNO_SCAN_RESULT_FOUND;
tlv_data = event_data->tlvs;
/* ssid */
tlv_data->tag = WIFI_TAG_SSID;
tlv_data->len = bi->SSID_len;
memcpy(tlv_data->value, bi->SSID, bi->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);
memcpy(tlv_data->value, &notif_bss_info->channel, 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);
memcpy(tlv_data->value, &notif_bss_info->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, payload_len);
MFREE(dhdp->osh, event_data, alloc_len);
}
out_err:
MFREE(cfg->osh, notif_bss_info, sizeof(*notif_bss_info)
+ sizeof(*mgmt) - sizeof(u8) + WL_BSS_INFO_MAX);
return err;
}
#if defined(BSSCACHE) || defined(RSSIAVG)
void wl_cfg80211_update_bss_cache(struct bcm_cfg80211 *cfg)
{
#if defined(RSSIAVG)
int rssi;
#endif
wl_scan_results_t *bss_list = cfg->bss_list;
/* Free cache in p2p scanning*/
if (p2p_is_on(cfg) && p2p_scan(cfg)) {
#if defined(RSSIAVG)
wl_free_rssi_cache(&cfg->g_rssi_cache_ctrl);
#endif
#if defined(BSSCACHE)
wl_free_bss_cache(&cfg->g_bss_cache_ctrl);
#endif
}
/* Update cache */
#if defined(RSSIAVG)
wl_update_rssi_cache(&cfg->g_rssi_cache_ctrl, bss_list);
if (!in_atomic())
wl_update_connected_rssi_cache(ndev, &cfg->g_rssi_cache_ctrl, &rssi);
#endif
#if defined(BSSCACHE)
wl_update_bss_cache(&cfg->g_bss_cache_ctrl,
#if defined(RSSIAVG)
&cfg->g_rssi_cache_ctrl,
#endif
bss_list);
#endif
/* delete dirty cache */
#if defined(RSSIAVG)
wl_delete_dirty_rssi_cache(&cfg->g_rssi_cache_ctrl);
wl_reset_rssi_cache(&cfg->g_rssi_cache_ctrl);
#endif
#if defined(BSSCACHE)
wl_delete_dirty_bss_cache(&cfg->g_bss_cache_ctrl);
wl_reset_bss_cache(&cfg->g_bss_cache_ctrl);
#endif
}
#endif
#if defined(BSSCACHE)
s32 wl_inform_bss_cache(struct bcm_cfg80211 *cfg)
{
wl_scan_results_t *bss_list = cfg->bss_list;
wl_bss_info_t *bi = NULL; /* must be initialized */
s32 err = 0;
s32 i, cnt;
struct net_device *ndev = bcmcfg_to_prmry_ndev(cfg);
wl_bss_cache_t *node;
WL_SCAN(("scanned AP count (%d)\n", bss_list->count));
bss_list = cfg->bss_list;
preempt_disable();
bi = next_bss(bss_list, bi);
for_each_bss(bss_list, bi, i) {
err = wl_inform_single_bss(cfg, bi, false);
if (unlikely(err)) {
WL_ERR(("bss inform failed\n"));
}
}
cnt = i;
node = cfg->g_bss_cache_ctrl.m_cache_head;
WL_SCAN(("cached AP count (%d)\n", wl_bss_cache_size(&cfg->g_bss_cache_ctrl)));
for (i=cnt; node && i<WL_AP_MAX; i++) {
if (node->dirty > 1) {
bi = node->results.bss_info;
err = wl_inform_single_bss(cfg, bi, false);
}
node = node->next;
}
preempt_enable();
if (cfg->autochannel)
wl_ext_get_best_channel(ndev, &cfg->g_bss_cache_ctrl, ioctl_version,
&cfg->best_2g_ch, &cfg->best_5g_ch);
return err;
}
#endif
static s32
wl_inform_bss(struct bcm_cfg80211 *cfg)
{
#if !defined(BSSCACHE)
wl_scan_results_t *bss_list;
wl_bss_info_t *bi = NULL; /* must be initialized */
s32 i;
struct net_device *ndev = bcmcfg_to_prmry_ndev(cfg);
#endif
s32 err = 0;
#if defined(BSSCACHE) || defined(RSSIAVG)
wl_cfg80211_update_bss_cache(cfg);
#endif
#if defined(BSSCACHE)
err = wl_inform_bss_cache(cfg);
#else
bss_list = cfg->bss_list;
WL_SCAN(("scanned AP count (%d)\n", bss_list->count));
#ifdef ESCAN_CHANNEL_CACHE
reset_roam_cache(cfg);
#endif /* ESCAN_CHANNEL_CACHE */
preempt_disable();
bi = next_bss(bss_list, bi);
for_each_bss(bss_list, bi, i) {
#ifdef ESCAN_CHANNEL_CACHE
add_roam_cache(cfg, bi);
#endif /* ESCAN_CHANNEL_CACHE */
err = wl_inform_single_bss(cfg, bi, false);
if (unlikely(err)) {
WL_ERR(("bss inform failed\n"));
}
}
preempt_enable();
if (cfg->autochannel)
wl_ext_get_best_channel(ndev, bss_list, ioctl_version,
&cfg->best_2g_ch, &cfg->best_5g_ch);
#endif
WL_MEM(("cfg80211 scan cache updated\n"));
#ifdef ROAM_CHANNEL_CACHE
/* print_roam_cache(); */
update_roam_cache(cfg, ioctl_version);
#endif /* ROAM_CHANNEL_CACHE */
return err;
}
#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 (!bss) {
continue;
}
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);
if (cfg->loc.in_progress) {
/* Listen in progress */
if ((status == WLC_E_STATUS_SUCCESS) || (status == WLC_E_STATUS_ABORT)) {
if (delayed_work_pending(&cfg->loc.work)) {
cancel_delayed_work_sync(&cfg->loc.work);
}
err = wl_cfgscan_notify_listen_complete(cfg);
goto exit;
} else {
WL_DBG(("Listen in progress. Unknown status. %d\n", status));
}
}
/* 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;
if (!escan_result) {
WL_ERR(("Invalid escan result (NULL data)\n"));
goto exit;
}
#ifdef WL_BCNRECV
if (status == WLC_E_STATUS_RXBCN) {
if (cfg->bcnrecv_info.bcnrecv_state == BEACON_RECV_STARTED) {
/* 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);
} else {
WL_ERR(("ignore bcnrx event in disabled state(%d)\n",
cfg->bcnrecv_info.bcnrecv_state));
}
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_status %d\n",
wl_get_drv_status(cfg, SCANNING, ndev),
ntoh32(e->event_type), ntoh32(e->status)));
goto exit;
}
#ifndef WL_DRV_AVOID_SCANCACHE
if (wl_escan_check_sync_id(cfg, status, escan_result->sync_id,
cfg->escan_info.cur_sync_id) < 0) {
goto exit;
}
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 ((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 (!(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 ((
#ifdef WL_6G_BAND
(cfg->curr_band == WLC_BAND_6G) ||
#endif /* WL_6G_BAND */
(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_cfgscan_scan_abort(cfg);
wl_notify_escan_complete(cfg, cfg->escan_info.ndev, false);
goto exit;
}
}
}
else if (status == WLC_E_STATUS_SUCCESS) {
cfg->escan_info.escan_state = WL_ESCAN_STATE_IDLE;
#ifdef DHD_SEND_HANG_ESCAN_SYNCID_MISMATCH
cfg->escan_info.prev_escan_aborted = FALSE;
#endif /* DHD_SEND_HANG_ESCAN_SYNCID_MISMATCH */
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);
}
wl_escan_increment_sync_id(cfg, SCAN_BUF_NEXT);
#ifdef CUSTOMER_HW4_DEBUG
if (wl_scan_timeout_dbg_enabled)
wl_scan_timeout_dbg_clear();
#endif /* CUSTOMER_HW4_DEBUG */
} 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_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
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);
}
#else
wl_inform_bss(cfg);
wl_notify_escan_complete(cfg, ndev, true);
#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"));
}
/* scan aborted, need to set previous success result */
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_scan_results_t *bss_list;
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: scanned AP count (%d)\n", bss_list->count));
bi = NULL;
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));
}
}
_wl_cfgscan_cancel_scan(cfg);
}
} else {
WL_ERR(("unexpected Escan Event %d : abort\n", status));
cfg->escan_info.escan_state = WL_ESCAN_STATE_IDLE;
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);
}
/* scan aborted, need to set previous success result */
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;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)) && defined(SUPPORT_RANDOM_MAC_SCAN)
static const u8 *
wl_retrieve_wps_attribute(const u8 *buf, u16 element_id)
{
const wl_wps_ie_t *ie = NULL;
u16 len = 0;
const u8 *attrib;
if (!buf) {
WL_ERR(("WPS IE not present"));
return 0;
}
ie = (const wl_wps_ie_t*) buf;
len = ie->len;
/* Point subel to the P2P IE's subelt field.
* Subtract the preceding fields (id, len, OUI, oui_type) from the length.
*/
attrib = ie->attrib;
len -= 4; /* exclude OUI + OUI_TYPE */
/* Search for attrib */
return wl_find_attribute(attrib, len, element_id);
}
bool
wl_is_wps_enrollee_active(struct net_device *ndev, const u8 *ie_ptr, u16 len)
{
const u8 *ie;
const u8 *attrib;
if ((ie = (const u8 *)wl_cfgp2p_find_wpsie(ie_ptr, len)) == NULL) {
WL_DBG(("WPS IE not present. Do nothing.\n"));
return false;
}
if ((attrib = wl_retrieve_wps_attribute(ie, WPS_ATTR_REQ_TYPE)) == NULL) {
WL_DBG(("WPS_ATTR_REQ_TYPE not found!\n"));
return false;
}
if (*attrib == WPS_REQ_TYPE_ENROLLEE) {
WL_INFORM_MEM(("WPS Enrolle Active\n"));
return true;
} else {
WL_DBG(("WPS_REQ_TYPE:%d\n", *attrib));
}
return false;
}
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(3, 19, 0) && defined(SUPPORT_RANDOM_MAC_SCAN) */
/* 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 */
chanspec_t wl_freq_to_chanspec(int freq)
{
chanspec_t chanspec = 0;
u16 bw;
/* see 802.11 17.3.8.3.2 and Annex J */
if (freq == 2484) {
chanspec = 14;
chanspec |= WL_CHANSPEC_BAND_2G;
bw = WL_CHANSPEC_BW_20;
} else if (freq >= 2412 && freq < 2484) {
chanspec = (freq - 2407) / 5;
chanspec |= WL_CHANSPEC_BAND_2G;
bw = WL_CHANSPEC_BW_20;
} else if (freq >= 4005 && freq <= 4980) {
chanspec = (freq - 4000) / 5;
chanspec |= WL_CHANSPEC_BAND_5G;
bw = WL_CHANSPEC_BW_20;
} else if (freq >= 5005 && freq < 5895) {
chanspec = (freq - 5000) / 5;
chanspec |= WL_CHANSPEC_BAND_5G;
bw = WL_CHANSPEC_BW_20;
#ifdef WL_6G_BAND
} else if (freq >= 5945 && freq <= 7200) {
/* see 802.11ax D4.1 27.3.22.2 */
chanspec = (freq - 5950) / 5;
bw = WL_CHANSPEC_BW_20;
if ((chanspec % 8) == 3) {
bw = WL_CHANSPEC_BW_40;
} else if ((chanspec % 16) == 7) {
bw = WL_CHANSPEC_BW_80;
} else if ((chanspec % 32) == 15) {
bw = WL_CHANSPEC_BW_160;
}
chanspec |= WL_CHANSPEC_BAND_6G;
} else if (freq == 5935) {
chanspec = 2;
bw = WL_CHANSPEC_BW_20;
chanspec |= WL_CHANSPEC_BAND_6G;
#endif /* WL_6G_BAND */
} else {
WL_ERR(("Invalid frequency %d\n", freq));
return INVCHANSPEC;
}
/* Get the min_bw set for the interface */
chanspec |= bw;
chanspec |= WL_CHANSPEC_CTL_SB_NONE;
return chanspec;
}
#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
static void
wl_cfgscan_populate_scan_channels(struct bcm_cfg80211 *cfg,
struct ieee80211_channel **channels, u32 n_channels,
u16 *channel_list, u32 *num_channels, bool use_chanspecs, bool skip_dfs)
{
u32 i = 0, j = 0;
u32 chanspec = 0;
struct wireless_dev *wdev;
bool is_p2p_scan = false;
#ifdef P2P_SKIP_DFS
int is_printed = false;
#endif /* P2P_SKIP_DFS */
u32 channel;
if (!channels || !n_channels) {
/* Do full channel scan */
return;
}
wdev = GET_SCAN_WDEV(cfg->scan_request);
if (!skip_dfs && wdev && wdev->netdev &&
(wdev->netdev != bcmcfg_to_prmry_ndev(cfg))) {
/* SKIP DFS channels for Secondary interface */
skip_dfs = true;
}
/* Check if request is for p2p scans */
is_p2p_scan = p2p_is_on(cfg) && p2p_scan(cfg);
for (i = 0; i < n_channels; i++) {
channel = ieee80211_frequency_to_channel(channels[i]->center_freq);
if (skip_dfs && (IS_RADAR_CHAN(channels[i]->flags))) {
WL_DBG(("Skipping radar channel. freq:%d\n",
(channels[i]->center_freq)));
continue;
}
if (!dhd_conf_match_channel(cfg->pub, channel))
continue;
chanspec = wl_freq_to_chanspec(channels[i]->center_freq);
if (chanspec == INVCHANSPEC) {
WL_ERR(("Invalid chanspec! Skipping channel\n"));
continue;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
if (channels[i]->band == IEEE80211_BAND_60GHZ) {
/* Not supported */
continue;
}
#endif /* LINUX_VER >= 3.6 */
#ifdef WL_HOST_BAND_MGMT
if (channels[i]->band == IEEE80211_BAND_2GHZ) {
if ((cfg->curr_band == WLC_BAND_5G) ||
(cfg->curr_band == WLC_BAND_6G)) {
if !(is_p2p_scan &&
IS_P2P_SOCIAL_CHANNEL(CHSPEC_CHANNEL(chanspec))) {
WL_DBG(("In 5G only mode, omit 2G channel:%d\n", channel));
continue;
}
}
} else {
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 */
if (is_p2p_scan) {
#ifdef WL_P2P_6G
if (!(cfg->p2p_6g_enabled)) {
#endif /* WL_P2P_6G */
if (CHSPEC_IS6G(chanspec)) {
continue;
}
#ifdef WL_P2P_6G
}
#endif /* WL_P2P_6G */
#ifdef P2P_SKIP_DFS
if (CHSPEC_IS5G(chanspec) &&
(CHSPEC_CHANNEL(chanspec) >= 52 &&
CHSPEC_CHANNEL(chanspec) <= 144)) {
if (is_printed == false) {
WL_ERR(("SKIP DFS CHANs(52~144)\n"));
is_printed = true;
}
continue;
}
#endif /* P2P_SKIP_DFS */
}
if (use_chanspecs) {
channel_list[j] = chanspec;
} else {
channel_list[j] = CHSPEC_CHANNEL(chanspec);
}
WL_SCAN(("Channel/Chanspec: %x \n", channel_list[j]));
j++;
if (j == WL_NUMCHANSPECS) {
/* max limit */
break;
}
}
*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, struct net_device *ndev, void *scan_params, u32 len,
struct cfg80211_scan_request *request)
{
#ifdef SCAN_SUPPRESS
u32 channel;
#endif
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 */
#ifdef SCAN_SUPPRESS
channel = wl_ext_scan_suppress(ndev, scan_params, cfg->scan_params_v2);
if (channel) {
n_channels = 1;
if ((n_channels > 0) && chan_list) {
if (len >= (scan_param_size + (n_channels * sizeof(u16)))) {
wl_ext_populate_scan_channel(cfg->pub, chan_list, channel, n_channels);
cur_offset += (n_channels * (sizeof(u16)));
}
}
} else
#endif
{
if ((request->n_channels > 0) && chan_list) {
if (len >= (scan_param_size + (request->n_channels * sizeof(u16)))) {
wl_cfgscan_populate_scan_channels(cfg,
request->channels, request->n_channels,
chan_list, &n_channels, true, false);
cur_offset += (uint32)(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_DBG_MEM(("scan_prep done. n_channels:%d n_ssids:%d\n", n_channels, n_ssids));
return BCME_OK;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)) && defined(SUPPORT_RANDOM_MAC_SCAN)
static s32
wl_config_scan_macaddr(struct bcm_cfg80211 *cfg,
struct net_device *ndev, bool randmac_enable, u8 *mac_addr, u8 *mac_addr_mask)
{
s32 err = BCME_OK;
if (randmac_enable) {
if (!cfg->scanmac_enabled) {
err = wl_cfg80211_scan_mac_enable(ndev);
if (unlikely(err)) {
goto exit;
}
WL_DBG(("randmac enabled\n"));
}
#ifdef WL_HOST_RANDMAC_CONFIG
/* If mask provided, apply user space configuration */
if (!mac_addr_mask && !mac_addr && !ETHER_ISNULLADDR(mac_addr_mask)) {
err = wl_cfg80211_scan_mac_config(ndev,
mac_addr, mac_addr_mask);
if (unlikely(err)) {
WL_ERR(("scan mac config failed\n"));
goto exit;
}
}
#endif /* WL_HOST_RANDMAC_CONFIG */
if (cfg->scanmac_config) {
/* Use default scanmac configuration */
WL_DBG(("Use host provided scanmac config\n"));
} else {
WL_DBG(("Use fw default scanmac config\n"));
}
} else if (!randmac_enable && cfg->scanmac_enabled) {
WL_DBG(("randmac disabled\n"));
err = wl_cfg80211_scan_mac_disable(ndev);
} else {
WL_DBG(("no change in randmac configuration\n"));
}
exit:
if (err < 0) {
if (err == BCME_UNSUPPORTED) {
/* Ignore if chip doesnt support the feature */
err = BCME_OK;
} else {
/* For errors other than unsupported fail the scan */
WL_ERR(("%s : failed to configure random mac for host scan, %d\n",
__FUNCTION__, err));
err = -EAGAIN;
}
}
return err;
}
#endif /* LINUX VER > 3.19 && SUPPORT_RANDOM_MAC_SCAN */
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 num_chans = 0;
u32 n_channels = 0;
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;
s32 search_state = WL_P2P_DISC_ST_SCAN;
u16 *default_chan_list = NULL;
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"));
if (!cfg || !request) {
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 (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)) && defined(SUPPORT_RANDOM_MAC_SCAN)
if (request) {
bool randmac_enable = (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR);
if (wl_is_wps_enrollee_active(ndev, request->ie, request->ie_len)) {
randmac_enable = false;
}
if ((err = wl_config_scan_macaddr(cfg, ndev, randmac_enable,
request->mac_addr, request->mac_addr_mask)) != BCME_OK) {
WL_ERR(("scanmac addr config failed\n"));
goto exit;
}
}
#endif /* KERNEL_VER >= 3.19 && SUPPORT_RANDOM_MAC_SCAN */
#if defined(USE_INITIAL_2G_SCAN) || defined(USE_INITIAL_SHORT_DWELL_TIME)
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;
int i, j;
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 */
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, ndev, 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 */
if (request->n_channels) {
num_chans = request->n_channels;
WL_SCAN((" chan 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;
}
/* Populate channels for p2p scanning */
wl_cfgscan_populate_scan_channels(cfg,
request->channels, request->n_channels,
default_chan_list, &num_chans, true, true);
if (num_chans == SOCIAL_CHAN_CNT && (
(CHSPEC_CHANNEL(default_chan_list[0]) ==
SOCIAL_CHAN_1) &&
(CHSPEC_CHANNEL(default_chan_list[1]) ==
SOCIAL_CHAN_2) &&
(CHSPEC_CHANNEL(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;
p2p_scan_purpose = P2P_SCAN_NORMAL;
} else if (num_chans == 1) {
p2p_scan_purpose = P2P_SCAN_CONNECT_TRY;
} 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"));
p2p_scan_purpose = P2P_SCAN_NORMAL;
}
} else {
err = -EINVAL;
goto exit;
}
WL_INFORM_MEM(("p2p_scan num_channels:%d\n", num_chans));
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;
#ifdef WES_SUPPORT
#ifdef CUSTOMER_SCAN_TIMEOUT_SETTING
if ((cfg->custom_scan_channel_time > DHD_SCAN_ASSOC_ACTIVE_TIME) |
(cfg->custom_scan_unassoc_time > DHD_SCAN_UNASSOC_ACTIVE_TIME) |
(cfg->custom_scan_passive_time > DHD_SCAN_PASSIVE_TIME) |
(cfg->custom_scan_home_time > DHD_SCAN_HOME_TIME) |
(cfg->custom_scan_home_away_time > DHD_SCAN_HOME_AWAY_TIME)) {
scan_timer_interval_ms = CUSTOMER_WL_SCAN_TIMER_INTERVAL_MS;
}
#endif /* CUSTOMER_SCAN_TIMEOUT_SETTING */
#endif /* WES_SUPPORT */
/* If NAN is enabled adding +10 sec to the existing timeout value */
#ifdef WL_NAN
if (wl_cfgnan_is_enabled(cfg)) {
scan_timer_interval_ms += WL_SCAN_TIMER_INTERVAL_MS_NAN;
}
#endif /* WL_NAN */
/* Additional time to scan 6GHz band channels */
#ifdef WL_6G_BAND
if (cfg->band_6g_supported) {
scan_timer_interval_ms += WL_SCAN_TIMER_INTERVAL_MS_6G;
}
#endif /* WL_6G_BAND */
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\n", 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 continuous busy state, clear assoc type in FW by disassoc cmd */
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;
#ifdef BCMDONGLEHOST
dhd_pub_t *dhdp = (dhd_pub_t *)(cfg->pub);
if (dhd_query_bus_erros(dhdp)) {
return BCME_NOTREADY;
}
dhdp->scan_busy_occurred = TRUE;
#endif /* BCMDONGLEHOST */
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)));
#ifdef BCMDONGLEHOST
#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)) && defined(OEM_ANDROID)
dhd_os_send_hang_message(dhdp);
#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)) && defined(OEM_ANDROID) */
#if !((LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)) && \
defined(OEM_ANDROID))
WL_ERR(("%s: HANG event is unsupported\n", __FUNCTION__));
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27) && OEM_ANDROID */
#endif /* BCMDONGLEHOST */
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));
}
/* To support GO, wl_cfgscan_cancel_scan()
* is needed instead of wl_cfg80211_disconnect()
*/
wl_cfgscan_cancel_scan(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;
bool p2p_ssid;
#ifdef WL11U
bcm_tlv_t *interworking_ie;
#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
/*
* 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;
}
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;
}
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));
mutex_lock(&cfg->scan_sync);
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"));
mutex_unlock(&cfg->scan_sync);
return -EAGAIN;
}
}
if (wl_get_drv_status(cfg, SCAN_ABORTING, ndev)) {
WL_ERR(("Scanning being aborted\n"));
mutex_unlock(&cfg->scan_sync);
return -EAGAIN;
}
if (cfg->loc.in_progress) {
/* Listen in progress, avoid new scan trigger */
mutex_unlock(&cfg->scan_sync);
return -EBUSY;
}
mutex_unlock(&cfg->scan_sync);
#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_cfgscan_cancel_scan(cfg);
}
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 */
#ifdef WL_SDO
if (wl_get_p2p_status(cfg, DISC_IN_PROGRESS)) {
wl_cfg80211_pause_sdo(ndev, cfg);
}
#endif
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);
#if defined(P2P_IE_MISSING_FIX)
cfg->p2p_prb_noti = false;
#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;
}
WL_TRACE_HW4(("START SCAN\n"));
#if defined(BCMDONGLEHOST) && defined(OEM_ANDROID)
DHD_OS_SCAN_WAKE_LOCK_TIMEOUT((dhd_pub_t *)(cfg->pub),
wl_get_scan_timeout_val(cfg) + SCAN_WAKE_LOCK_MARGIN_MS);
DHD_DISABLE_RUNTIME_PM((dhd_pub_t *)(cfg->pub));
#endif
if (cfg->p2p_supported) {
if (request && p2p_on(cfg) && p2p_scan(cfg)) {
#ifdef WL_SDO
if (wl_get_p2p_status(cfg, DISC_IN_PROGRESS)) {
/* We shouldn't be getting p2p_find while discovery
* offload is in progress
*/
WL_SD(("P2P_FIND: Discovery offload is in progress."
" Do nothing\n"));
err = -EINVAL;
goto scan_out;
}
#endif
/* 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);
#ifdef WL_EXT_IAPSTA
if (!wl_ext_in4way_sync(ndev_to_wlc_ndev(ndev, cfg), STA_FAKE_SCAN_IN_CONNECT,
WL_EXT_STATUS_SCANNING, NULL))
#endif
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;
LOG_TS(cfg, scan_start);
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 */
#if defined(BCMDONGLEHOST) && defined(OEM_ANDROID)
DHD_OS_SCAN_WAKE_UNLOCK((dhd_pub_t *)(cfg->pub));
DHD_ENABLE_RUNTIME_PM((dhd_pub_t *)(cfg->pub));
#endif
return -ENODEV;
}
err = scanbusy_err;
}
#if defined(BCMDONGLEHOST) && defined(OEM_ANDROID)
DHD_OS_SCAN_WAKE_UNLOCK((dhd_pub_t *)(cfg->pub));
DHD_ENABLE_RUNTIME_PM((dhd_pub_t *)(cfg->pub));
#endif
#ifdef WL_SDO
if (wl_get_p2p_status(cfg, DISC_IN_PROGRESS)) {
wl_cfg80211_resume_sdo(ndev, cfg);
}
#endif
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;
}
}
#ifdef WL_EXT_IAPSTA
err = wl_ext_in4way_sync(ndev_to_wlc_ndev(ndev, cfg), STA_NO_SCAN_IN4WAY,
WL_EXT_STATUS_SCAN, NULL);
if (err) {
WL_SCAN(("scan suppressed %d\n", err));
return err;
}
#endif
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;
}
static void _wl_cfgscan_cancel_scan(struct bcm_cfg80211 *cfg)
{
struct wireless_dev *wdev = NULL;
struct net_device *ndev = NULL;
if (!cfg->scan_request && !cfg->sched_scan_req) {
/* No scans in progress */
WL_INFORM_MEM(("No scan in progress\n"));
return;
}
wdev = wl_get_scan_wdev(cfg);
if (!wdev) {
WL_ERR(("No wdev present\n"));
return;
}
ndev = wdev_to_wlc_ndev(wdev, cfg);
/* Check if any scan in progress only then abort */
if (wl_get_drv_status_all(cfg, SCANNING)) {
wl_cfgscan_scan_abort(cfg);
/* Indicate escan completion to upper layer */
wl_notify_escan_complete(cfg, ndev, true);
}
WL_INFORM_MEM(("Scan aborted! \n"));
}
/* Wrapper function for cancel_scan with scan_sync mutex */
void wl_cfgscan_cancel_scan(struct bcm_cfg80211 *cfg)
{
mutex_lock(&cfg->scan_sync);
_wl_cfgscan_cancel_scan(cfg);
mutex_unlock(&cfg->scan_sync);
}
/* Use wl_cfgscan_cancel_scan function for scan abort, as this would do a FW abort
* followed by indication to upper layer, the current function wl_cfgscan_scan_abort, does
* only FW abort.
*/
void wl_cfgscan_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;
/* 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;
params_v2->length = htod16(sizeof(wl_scan_params_v2_t));
} else {
wl_scan_params_t *params_v1 = (wl_scan_params_t *)params;
params_v1->channel_list[0] = channel;
params_v1->channel_num = channel_num;
}
#ifdef DHD_SEND_HANG_ESCAN_SYNCID_MISMATCH
cfg->escan_info.prev_escan_aborted = TRUE;
#endif /* DHD_SEND_HANG_ESCAN_SYNCID_MISMATCH */
/* 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_ERR(("scan engine not aborted 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 */
}
static s32
wl_notify_escan_complete(struct bcm_cfg80211 *cfg,
struct net_device *ndev, bool aborted)
{
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 (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)) && defined(SUPPORT_RANDOM_MAC_SCAN) && \
(!defined(WL_USE_RANDOMIZED_SCAN))
/* Disable scanmac if enabled */
if (cfg->scanmac_enabled) {
wl_cfg80211_scan_mac_disable(ndev);
}
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(3, 19, 0) && defined(SUPPORT_RANDOM_MAC_SCAN) */
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 /* WL_ENABLE_P2P_IF */
}
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;
}
del_timer_sync(&cfg->scan_timeout);
/* clear scan enq time on complete */
CLR_TS(cfg, scan_enq);
CLR_TS(cfg, scan_start);
#if defined (ESCAN_RESULT_PATCH)
if (likely(cfg->scan_request)) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 8, 0))
if (aborted && cfg->p2p && 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
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);
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);
CLR_TS(cfg, scan_start);
WL_CFG_DRV_UNLOCK(&cfg->cfgdrv_lock, flags);
#ifdef WL_SCHED_SCAN
if (cfg->sched_scan_running && cfg->sched_scan_req) {
struct wiphy *wiphy = cfg->sched_scan_req->wiphy;
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(wiphy,
cfg->sched_scan_req->reqid);
#else
cfg80211_sched_scan_results(wiphy);
#endif /* LINUX_VER > 4.11 */
}
DBG_EVENT_LOG(dhdp, WIFI_EVENT_DRIVER_PNO_SCAN_COMPLETE);
/* Mark target scan as done */
cfg->sched_scan_running = FALSE;
if (cfg->bss_list && (cfg->bss_list->count == 0)) {
WL_INFORM_MEM(("bss list empty. report sched_scan_stop\n"));
/* Indicated sched scan stopped so that user space
* can do a full scan incase found match is empty.
*/
CFG80211_SCHED_SCAN_STOPPED(wiphy, cfg->sched_scan_req);
cfg->sched_scan_req = NULL;
}
}
#endif /* WL_SCHED_SCAN */
wake_up_interruptible(&dhdp->conf->event_complete);
#if defined(BCMDONGLEHOST) && defined(OEM_ANDROID)
DHD_OS_SCAN_WAKE_UNLOCK((dhd_pub_t *)(cfg->pub));
DHD_ENABLE_RUNTIME_PM((dhd_pub_t *)(cfg->pub));
#endif
#ifdef WL_SDO
if (wl_get_p2p_status(cfg, DISC_IN_PROGRESS) && !in_atomic()) {
/* If it is in atomic, we probably have to wait till the
* next event or find someother way of invoking this.
*/
wl_cfg80211_resume_sdo(ndev, cfg);
}
#endif
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_cfgscan_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)) */
#if defined(OEM_ANDROID) && defined(DHCP_SCAN_SUPPRESS)
static void wl_cfg80211_scan_supp_timerfunc(ulong data)
{
struct bcm_cfg80211 *cfg = (struct bcm_cfg80211 *)data;
WL_DBG(("Enter \n"));
schedule_work(&cfg->wlan_work);
}
int wl_cfg80211_scan_suppress(struct net_device *dev, int suppress)
{
int ret = 0;
struct wireless_dev *wdev;
struct bcm_cfg80211 *cfg;
if (!dev || ((suppress != 0) && (suppress != 1))) {
ret = -EINVAL;
goto exit;
}
wdev = ndev_to_wdev(dev);
if (!wdev) {
ret = -EINVAL;
goto exit;
}
cfg = (struct bcm_cfg80211 *)wiphy_priv(wdev->wiphy);
if (!cfg) {
ret = -EINVAL;
goto exit;
}
if (suppress == cfg->scan_suppressed) {
WL_DBG(("No change in scan_suppress state. Ignoring cmd..\n"));
return 0;
}
del_timer_sync(&cfg->scan_supp_timer);
if ((ret = wldev_ioctl_set(dev, WLC_SET_SCANSUPPRESS,
&suppress, sizeof(int))) < 0) {
WL_ERR(("Scan suppress setting failed ret:%d \n", ret));
} else {
WL_DBG(("Scan suppress %s \n", suppress ? "Enabled" : "Disabled"));
cfg->scan_suppressed = suppress;
}
/* If scan_suppress is set, Start a timer to monitor it (just incase) */
if (cfg->scan_suppressed) {
if (ret) {
WL_ERR(("Retry scan_suppress reset at a later time \n"));
mod_timer(&cfg->scan_supp_timer,
jiffies + msecs_to_jiffies(WL_SCAN_SUPPRESS_RETRY));
} else {
WL_DBG(("Start wlan_timer to clear of scan_suppress \n"));
mod_timer(&cfg->scan_supp_timer,
jiffies + msecs_to_jiffies(WL_SCAN_SUPPRESS_TIMEOUT));
}
}
exit:
return ret;
}
#endif /* DHCP_SCAN_SUPPRESS */
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_cfgscan_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_cfgscan_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
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
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(cfg, status, escan_result->sync_id,
cfg->escan_info.cur_sync_id) < 0) {
goto exit;
}
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;
#ifdef CUSTOMER_HW4_DEBUG
if (wl_scan_timeout_dbg_enabled)
wl_scan_timeout_dbg_clear();
#endif /* CUSTOMER_HW4_DEBUG */
} 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) {
if (fw_abort == true) {
wl_cfgscan_cancel_scan(cfg);
} else {
wl_notify_escan_complete(cfg, ndev, aborted);
}
}
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;
wl_scan_results_t *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 defined(CONFIG_TIZEN)
struct net_device *ndev = NULL;
#endif /* CONFIG_TIZEN */
#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
#if defined(CONFIG_TIZEN)
ndev = bcmcfg_to_prmry_ndev(cfg);
if (aborted)
net_stat_tizen_update_wifi(ndev, WIFISTAT_SCAN_ABORT);
else
net_stat_tizen_update_wifi(ndev, WIFISTAT_SCAN_DONE);
#endif /* CONFIG_TIZEN */
}
#if defined(SUPPORT_RANDOM_MAC_SCAN)
int
wl_cfg80211_set_random_mac(struct net_device *dev, bool enable)
{
struct bcm_cfg80211 *cfg = wl_get_cfg(dev);
int ret;
if (cfg->random_mac_enabled == enable) {
WL_ERR(("Random MAC already %s\n", enable ? "Enabled" : "Disabled"));
return BCME_OK;
}
if (enable) {
ret = wl_cfg80211_random_mac_enable(dev);
} else {
ret = wl_cfg80211_random_mac_disable(dev);
}
if (!ret) {
cfg->random_mac_enabled = enable;
}
return ret;
}
int
wl_cfg80211_random_mac_enable(struct net_device *dev)
{
u8 random_mac[ETH_ALEN] = {0, };
u8 rand_bytes[3] = {0, };
s32 err = BCME_ERROR;
struct bcm_cfg80211 *cfg = wl_get_cfg(dev);
#if !defined(LEGACY_RANDOM_MAC)
uint8 buffer[WLC_IOCTL_SMLEN] = {0, };
wl_scanmac_t *sm = NULL;
int len = 0;
wl_scanmac_enable_t *sm_enable = NULL;
wl_scanmac_config_t *sm_config = NULL;
#endif /* !LEGACY_RANDOM_MAC */
if (wl_get_drv_status_all(cfg, CONNECTED) || wl_get_drv_status_all(cfg, CONNECTING) ||
wl_get_drv_status_all(cfg, AP_CREATED) || wl_get_drv_status_all(cfg, AP_CREATING)) {
WL_ERR(("fail to Set random mac, current state is wrong\n"));
return err;
}
(void)memcpy_s(random_mac, ETH_ALEN, bcmcfg_to_prmry_ndev(cfg)->dev_addr, ETH_ALEN);
get_random_bytes(&rand_bytes, sizeof(rand_bytes));
if (rand_bytes[2] == 0x0 || rand_bytes[2] == 0xff) {
rand_bytes[2] = 0xf0;
}
#if defined(LEGACY_RANDOM_MAC)
/* of the six bytes of random_mac the bytes 3, 4, 5 are copied with contents of rand_bytes
* So while copying 3 bytes of content no overflow would be seen. Hence returning void.
*/
(void)memcpy_s(&random_mac[3], (sizeof(u8) * 3), rand_bytes, sizeof(rand_bytes));
err = wldev_iovar_setbuf_bsscfg(bcmcfg_to_prmry_ndev(cfg), "cur_etheraddr",
random_mac, ETH_ALEN, cfg->ioctl_buf, WLC_IOCTL_SMLEN, 0, &cfg->ioctl_buf_sync);
if (err != BCME_OK) {
WL_ERR(("failed to set random generate MAC address\n"));
} else {
WL_ERR(("set mac " MACDBG " to " MACDBG "\n",
MAC2STRDBG((const u8 *)bcmcfg_to_prmry_ndev(cfg)->dev_addr),
MAC2STRDBG((const u8 *)&random_mac)));
WL_ERR(("random MAC enable done"));
}
#else
/* Enable scan mac */
sm = (wl_scanmac_t *)buffer;
sm_enable = (wl_scanmac_enable_t *)sm->data;
sm->len = sizeof(*sm_enable);
sm_enable->enable = 1;
len = OFFSETOF(wl_scanmac_t, data) + sm->len;
sm->subcmd_id = WL_SCANMAC_SUBCMD_ENABLE;
err = wldev_iovar_setbuf_bsscfg(dev, "scanmac",
sm, len, cfg->ioctl_buf, WLC_IOCTL_SMLEN, 0, &cfg->ioctl_buf_sync);
/* For older chip which which does not have scanmac support can still use
* cur_etheraddr to set the randmac. rand_mask and rand_mac comes from upper
* cfg80211 layer. If rand_mask and rand_mac is not passed then fallback
* to default cur_etheraddr and default mask.
*/
if (err == BCME_UNSUPPORTED) {
/* In case of host based legacy randomization, random address is
* generated by mixing 3 bytes of cur_etheraddr and 3 bytes of
* random bytes generated.In that case rand_mask is nothing but
* random bytes.
*/
(void)memcpy_s(&random_mac[3], (sizeof(u8) * 3), rand_bytes, sizeof(rand_bytes));
err = wldev_iovar_setbuf_bsscfg(bcmcfg_to_prmry_ndev(cfg), "cur_etheraddr",
random_mac, ETH_ALEN, cfg->ioctl_buf,
WLC_IOCTL_SMLEN, 0, &cfg->ioctl_buf_sync);
if (err != BCME_OK) {
WL_ERR(("failed to set random generate MAC address\n"));
} else {
WL_ERR(("set mac " MACDBG " to " MACDBG "\n",
MAC2STRDBG((const u8 *)bcmcfg_to_prmry_ndev(cfg)->dev_addr),
MAC2STRDBG((const u8 *)&random_mac)));
WL_ERR(("random MAC enable done using legacy randmac"));
}
} else if (err == BCME_OK) {
/* Configure scanmac */
(void)memset_s(buffer, sizeof(buffer), 0x0, sizeof(buffer));
sm_config = (wl_scanmac_config_t *)sm->data;
sm->len = sizeof(*sm_config);
sm->subcmd_id = WL_SCANMAC_SUBCMD_CONFIG;
sm_config->scan_bitmap = WL_SCANMAC_SCAN_UNASSOC;
/* Set randomize mac address recv from upper layer */
(void)memcpy_s(&sm_config->mac.octet, ETH_ALEN, random_mac, ETH_ALEN);
/* Set randomize mask recv from upper layer */
/* Currently in samsung case, upper layer does not provide
* variable randmask and its using fixed 3 byte randomization
*/
(void)memset_s(&sm_config->random_mask.octet, ETH_ALEN, 0x0, ETH_ALEN);
/* Memsetting the remaining octets 3, 4, 5. So remaining dest length is 3 */
(void)memset_s(&sm_config->random_mask.octet[3], 3, 0xFF, 3);
WL_DBG(("recv random mac addr " MACDBG " recv rand mask" MACDBG "\n",
MAC2STRDBG((const u8 *)&sm_config->mac.octet),
MAC2STRDBG((const u8 *)&sm_config->random_mask)));
len = OFFSETOF(wl_scanmac_t, data) + sm->len;
err = wldev_iovar_setbuf_bsscfg(dev, "scanmac",
sm, len, cfg->ioctl_buf, WLC_IOCTL_SMLEN, 0, &cfg->ioctl_buf_sync);
if (err != BCME_OK) {
WL_ERR(("failed scanmac configuration\n"));
/* Disable scan mac for clean-up */
wl_cfg80211_random_mac_disable(dev);
return err;
}
WL_DBG(("random MAC enable done using scanmac"));
} else {
WL_ERR(("failed to enable scanmac, err=%d\n", err));
}
#endif /* LEGACY_RANDOM_MAC */
return err;
}
int
wl_cfg80211_random_mac_disable(struct net_device *dev)
{
s32 err = BCME_ERROR;
struct bcm_cfg80211 *cfg = wl_get_cfg(dev);
#if !defined(LEGACY_RANDOM_MAC)
uint8 buffer[WLC_IOCTL_SMLEN] = {0, };
wl_scanmac_t *sm = NULL;
int len = 0;
wl_scanmac_enable_t *sm_enable = NULL;
#endif /* !LEGACY_RANDOM_MAC */
#if defined(LEGACY_RANDOM_MAC)
WL_ERR(("set original mac " MACDBG "\n",
MAC2STRDBG((const u8 *)bcmcfg_to_prmry_ndev(cfg)->dev_addr)));
err = wldev_iovar_setbuf_bsscfg(bcmcfg_to_prmry_ndev(cfg), "cur_etheraddr",
bcmcfg_to_prmry_ndev(cfg)->dev_addr, ETH_ALEN,
cfg->ioctl_buf, WLC_IOCTL_SMLEN, 0, &cfg->ioctl_buf_sync);
if (err != BCME_OK) {
WL_ERR(("failed to set original MAC address\n"));
} else {
WL_ERR(("legacy random MAC disable done \n"));
}
#else
sm = (wl_scanmac_t *)buffer;
sm_enable = (wl_scanmac_enable_t *)sm->data;
sm->len = sizeof(*sm_enable);
/* Disable scanmac */
sm_enable->enable = 0;
len = OFFSETOF(wl_scanmac_t, data) + sm->len;
sm->subcmd_id = WL_SCANMAC_SUBCMD_ENABLE;
err = wldev_iovar_setbuf_bsscfg(dev, "scanmac",
sm, len, cfg->ioctl_buf, WLC_IOCTL_SMLEN, 0, &cfg->ioctl_buf_sync);
if (err != BCME_OK) {
WL_ERR(("failed to disable scanmac, err=%d\n", err));
return err;
}
/* Clear scanmac enabled status */
cfg->scanmac_enabled = 0;
WL_DBG(("random MAC disable done\n"));
#endif /* LEGACY_RANDOM_MAC */
return err;
}
int wl_cfg80211_scan_mac_enable(struct net_device *dev)
{
struct bcm_cfg80211 *cfg = wl_get_cfg(dev);
s32 err = BCME_ERROR;
uint8 buffer[WLC_IOCTL_SMLEN] = {0};
wl_scanmac_t *sm = NULL;
int len = 0;
wl_scanmac_enable_t *sm_enable = NULL;
/* Enable scan mac */
sm = (wl_scanmac_t *)buffer;
sm_enable = (wl_scanmac_enable_t *)sm->data;
sm->len = sizeof(*sm_enable);
sm_enable->enable = 1;
len = OFFSETOF(wl_scanmac_t, data) + sm->len;
sm->subcmd_id = WL_SCANMAC_SUBCMD_ENABLE;
err = wldev_iovar_setbuf_bsscfg(dev, "scanmac",
sm, len, cfg->ioctl_buf, WLC_IOCTL_SMLEN, 0, &cfg->ioctl_buf_sync);
if (unlikely(err)) {
WL_ERR(("scanmac enable failed\n"));
} else {
/* Mark scanmac configured */
cfg->scanmac_enabled = 1;
}
return err;
}
/*
* This is new interface for mac randomization. It takes randmac and randmask
* as arg and it uses scanmac iovar to offload the mac randomization to firmware.
*/
int wl_cfg80211_scan_mac_config(struct net_device *dev, uint8 *rand_mac, uint8 *rand_mask)
{
int byte_index = 0;
s32 err = BCME_ERROR;
uint8 buffer[WLC_IOCTL_SMLEN] = {0};
wl_scanmac_t *sm = NULL;
int len = 0;
wl_scanmac_config_t *sm_config = NULL;
struct bcm_cfg80211 *cfg = wl_get_cfg(dev);
uint8 random_mask_46_bits[ETHER_ADDR_LEN] = {0xFC, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
if (rand_mac == NULL) {
err = BCME_BADARG;
WL_ERR(("fail to Set random mac, bad argument\n"));
/* Disable the current scanmac config */
return err;
}
if (ETHER_ISNULLADDR(rand_mac)) {
WL_DBG(("fail to Set random mac, Invalid rand mac\n"));
/* Disable the current scanmac config */
return err;
}
/* Configure scanmac */
(void)memset_s(buffer, sizeof(buffer), 0x0, sizeof(buffer));
sm = (wl_scanmac_t *)buffer;
sm_config = (wl_scanmac_config_t *)sm->data;
sm->len = sizeof(*sm_config);
sm->subcmd_id = WL_SCANMAC_SUBCMD_CONFIG;
sm_config->scan_bitmap = WL_SCANMAC_SCAN_UNASSOC;
#ifdef WL_USE_RANDOMIZED_SCAN
sm_config->scan_bitmap |= WL_SCANMAC_SCAN_ASSOC_HOST;
#endif /* WL_USE_RANDOMIZED_SCAN */
/* Set randomize mac address recv from upper layer */
(void)memcpy_s(&sm_config->mac.octet, ETH_ALEN, rand_mac, ETH_ALEN);
/* Set randomize mask recv from upper layer */
/* There is a difference in how to interpret rand_mask between
* upperlayer and firmware. If the byte is set as FF then for
* upper layer it means keep that byte and do not randomize whereas
* for firmware it means randomize those bytes and vice versa. Hence
* conversion is needed before setting the iovar
*/
(void)memset_s(&sm_config->random_mask.octet, ETH_ALEN, 0x0, ETH_ALEN);
/* Only byte randomization is supported currently. If mask recv is 0x0F
* for a particular byte then it will be treated as no randomization
* for that byte.
*/
if (!rand_mask) {
/* If rand_mask not provided, use 46_bits_mask */
(void)memcpy_s(&sm_config->random_mask.octet, ETH_ALEN,
random_mask_46_bits, ETH_ALEN);
} else {
while (byte_index < ETH_ALEN) {
if (rand_mask[byte_index] == 0xFF) {
sm_config->random_mask.octet[byte_index] = 0x00;
} else if (rand_mask[byte_index] == 0x00) {
sm_config->random_mask.octet[byte_index] = 0xFF;
}
byte_index++;
}
}
WL_DBG(("recv random mac addr " MACDBG "recv rand mask" MACDBG "\n",
MAC2STRDBG((const u8 *)&sm_config->mac.octet),
MAC2STRDBG((const u8 *)&sm_config->random_mask)));
len = OFFSETOF(wl_scanmac_t, data) + sm->len;
err = wldev_iovar_setbuf_bsscfg(dev, "scanmac",
sm, len, cfg->ioctl_buf, WLC_IOCTL_SMLEN, 0, &cfg->ioctl_buf_sync);
if (err != BCME_OK) {
WL_ERR(("failed scanmac configuration\n"));
/* Disable scan mac for clean-up */
return err;
}
WL_INFORM_MEM(("scanmac configured"));
cfg->scanmac_config = true;
return err;
}
int
wl_cfg80211_scan_mac_disable(struct net_device *dev)
{
s32 err = BCME_ERROR;
err = wl_cfg80211_random_mac_disable(dev);
return err;
}
#endif /* SUPPORT_RANDOM_MAC_SCAN */
#ifdef WL_SCHED_SCAN
#define PNO_TIME 30
#define PNO_REPEAT 4
#define PNO_FREQ_EXPO_MAX 2
#define PNO_ADAPTIVE_SCAN_LIMIT 60
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)
{
u16 chan_list[WL_NUMCHANNELS] = {0};
u32 num_channels = 0;
ushort 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 = 0;
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;
}
if ((request->n_scan_plans == 1) && request->scan_plans &&
(request->scan_plans->interval > PNO_ADAPTIVE_SCAN_LIMIT)) {
/* If the host gives a high value for scan interval, then
* doing adaptive scan doesn't make sense. Better stick to the
* scan interval that host gives.
*/
pno_time = request->scan_plans->interval;
pno_repeat = 0;
pno_freq_expo_max = 0;
} else {
/* Run adaptive PNO */
pno_time = PNO_TIME;
}
WL_DBG(("Enter. ssids:%d match_sets:%d pno_time:%d pno_repeat:%d channels:%d\n",
request->n_ssids, request->n_match_sets,
pno_time, pno_repeat, request->n_channels));
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 (request->n_channels && request->n_channels < WL_NUMCHANNELS) {
/* get channel list. Note PNO uses channels and not chanspecs */
wl_cfgscan_populate_scan_channels(cfg,
request->channels, request->n_channels,
chan_list, &num_channels, false, false);
}
if (DBG_RING_ACTIVE(dhdp, DHD_EVENT_RING_ID)) {
alloc_len = sizeof(log_conn_event_t) + sizeof(tlv_log) + DOT11_MAX_SSID_LEN;
event_data = (log_conn_event_t *)MALLOCZ(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;
}
}
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 defined(BCMDONGLEHOST)
if ((ret = dhd_dev_pno_set_for_ssid(dev, ssids_local, ssid_cnt,
pno_time, pno_repeat, pno_freq_expo_max,
(num_channels ? chan_list : NULL), num_channels)) < 0) {
WL_ERR(("PNO setup failed!! ret=%d \n", ret));
ret = -EINVAL;
goto exit;
}
#endif /* BCMDONGLEHOST */
if (CAN_SLEEP() && DBG_RING_ACTIVE(dhdp, DHD_EVENT_RING_ID)) {
/*
* purposefully logging here to make sure that
* firmware configuration was successful
*/
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;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)) && defined(SUPPORT_RANDOM_MAC_SCAN)
if ((ret = wl_config_scan_macaddr(cfg, dev,
(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR),
request->mac_addr, request->mac_addr_mask)) != BCME_OK) {
WL_ERR(("scanmac addr config failed\n"));
/* Cleanup the states and stop the pno */
if (dhd_dev_pno_stop_for_ssid(dev) < 0) {
WL_ERR(("PNO Stop for SSID failed"));
}
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);
goto exit;
}
#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)) && (defined(SUPPORT_RANDOM_MAC_SCAN)) */
exit:
if (event_data) {
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);
WL_DBG(("Enter \n"));
WL_PNO((">>> SCHED SCAN STOP\n"));
#if defined(BCMDONGLEHOST)
if (dhd_dev_pno_stop_for_ssid(dev) < 0) {
WL_ERR(("PNO Stop for SSID failed"));
} else {
/*
* purposefully logging here to make sure that
* firmware configuration was successful
*/
DBG_EVENT_LOG(dhdp, WIFI_EVENT_DRIVER_PNO_REMOVE);
}
#endif /* BCMDONGLEHOST */
mutex_lock(&cfg->scan_sync);
if (cfg->sched_scan_req) {
WL_PNO((">>> Sched scan running. Aborting it..\n"));
_wl_cfgscan_cancel_scan(cfg);
}
cfg->sched_scan_req = NULL;
cfg->sched_scan_running = FALSE;
mutex_unlock(&cfg->scan_sync);
return 0;
}
#endif /* WL_SCHED_SCAN */
#ifdef WES_SUPPORT
#ifdef CUSTOMER_SCAN_TIMEOUT_SETTING
s32 wl_cfg80211_custom_scan_time(struct net_device *dev,
enum wl_custom_scan_time_type type, int time)
{
struct bcm_cfg80211 *cfg = wl_get_cfg(dev);
if (cfg == NULL) {
return FALSE;
}
switch (type) {
case WL_CUSTOM_SCAN_CHANNEL_TIME :
WL_ERR(("Scan Channel Time %d\n", time));
cfg->custom_scan_channel_time = time;
break;
case WL_CUSTOM_SCAN_UNASSOC_TIME :
WL_ERR(("Scan Unassoc Time %d\n", time));
cfg->custom_scan_unassoc_time = time;
break;
case WL_CUSTOM_SCAN_PASSIVE_TIME :
WL_ERR(("Scan Passive Time %d\n", time));
cfg->custom_scan_passive_time = time;
break;
case WL_CUSTOM_SCAN_HOME_TIME :
WL_ERR(("Scan Home Time %d\n", time));
cfg->custom_scan_home_time = time;
break;
case WL_CUSTOM_SCAN_HOME_AWAY_TIME :
WL_ERR(("Scan Home Away Time %d\n", time));
cfg->custom_scan_home_away_time = time;
break;
default:
return FALSE;
}
return TRUE;
}
#endif /* CUSTOMER_SCAN_TIMEOUT_SETTING */
#endif /* WES_SUPPORT */
#ifdef CUSTOMER_HW4_DEBUG
uint prev_dhd_console_ms = 0;
u32 prev_wl_dbg_level = 0;
static void wl_scan_timeout_dbg_set(void);
static void wl_scan_timeout_dbg_set(void)
{
WL_ERR(("Enter \n"));
prev_dhd_console_ms = dhd_console_ms;
prev_wl_dbg_level = wl_dbg_level;
dhd_console_ms = 1;
wl_dbg_level |= (WL_DBG_ERR | WL_DBG_P2P_ACTION | WL_DBG_SCAN);
wl_scan_timeout_dbg_enabled = 1;
}
void wl_scan_timeout_dbg_clear(void)
{
WL_ERR(("Enter \n"));
dhd_console_ms = prev_dhd_console_ms;
wl_dbg_level = prev_wl_dbg_level;
wl_scan_timeout_dbg_enabled = 0;
}
#endif /* CUSTOMER_HW4_DEBUG */
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;
#if 0
wl_scan_results_t *bss_list;
wl_bss_info_t *bi = NULL;
s32 i;
u32 channel;
#endif
u64 cur_time = OSL_LOCALTIME_NS();
#ifdef BCMDONGLEHOST
dhd_pub_t *dhdp = (dhd_pub_t *)(cfg->pub);
#endif /* BCMDONGLEHOST */
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;
}
#ifdef BCMDONGLEHOST
if (dhd_query_bus_erros(dhdp)) {
return;
}
#if defined(DHD_KERNEL_SCHED_DEBUG) && defined(DHD_FW_COREDUMP)
/* DHD triggers Kernel panic if the SCAN timeout occurrs
* due to tasklet or workqueue scheduling problems in the Linux Kernel.
* Customer informs that it is hard to find any clue from the
* host memory dump since the important tasklet or workqueue information
* is already disappered due the latency while printing out the timestamp
* logs for debugging scan timeout issue.
* For this reason, customer requestes us to trigger Kernel Panic rather than
* taking a SOCRAM dump.
*/
if (dhdp->memdump_enabled == DUMP_MEMFILE_BUGON &&
((cfg->tsinfo.scan_deq < cfg->tsinfo.scan_enq) ||
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->tsinfo.scan_enq),
GET_SEC_USEC(cfg->tsinfo.wl_evt_hdlr_entry),
GET_SEC_USEC(cfg->tsinfo.wl_evt_deq),
GET_SEC_USEC(cfg->tsinfo.scan_deq),
GET_SEC_USEC(cfg->tsinfo.scan_hdlr_cmplt),
GET_SEC_USEC(cfg->tsinfo.scan_cmplt),
GET_SEC_USEC(cfg->tsinfo.wl_evt_hdlr_exit), GET_SEC_USEC(cur_time)));
if (cfg->tsinfo.scan_enq) {
WL_ERR(("Elapsed time(ns): %llu\n", (cur_time - cfg->tsinfo.scan_enq)));
}
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);
#endif /* BCMDONGLEHOST */
#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 */
#if 0
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));
}
}
#endif
ndev = wdev_to_wlc_ndev(wdev, cfg);
bzero(&msg, sizeof(wl_event_msg_t));
WL_ERR(("timer expired\n"));
#ifdef BCMDONGLEHOST
dhdp->scan_timeout_occurred = TRUE;
#ifdef BCMPCIE
if (!dhd_pcie_dump_int_regs(dhdp)) {
WL_ERR(("%s : PCIe link might be down\n", __FUNCTION__));
dhd_bus_set_linkdown(dhdp, TRUE);
dhdp->hang_reason = HANG_REASON_PCIE_LINK_DOWN_EP_DETECT;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)) && defined(OEM_ANDROID)
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 */
}
dhd_pcie_dump_rc_conf_space_cap(dhdp);
#endif /* BCMPCIE */
#if 0
if (!dhd_bus_get_linkdown(dhdp) && dhdp->memdump_enabled) {
dhdp->memdump_type = DUMP_TYPE_SCAN_TIMEOUT;
dhd_bus_mem_dump(dhdp);
}
#endif /* DHD_FW_COREDUMP */
/*
* 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 /* BCMDONGLEHOST */
msg.event_type = hton32(WLC_E_ESCAN_RESULT);
msg.status = hton32(WLC_E_STATUS_TIMEOUT);
msg.reason = 0xFFFFFFFF;
wl_cfg80211_event(ndev, &msg, NULL);
#ifdef CUSTOMER_HW4_DEBUG
if (!wl_scan_timeout_dbg_enabled)
wl_scan_timeout_dbg_set();
#endif /* CUSTOMER_HW4_DEBUG */
#if defined(BCMDONGLEHOST) && defined(OEM_ANDROID)
DHD_ENABLE_RUNTIME_PM(dhdp);
#endif /* BCMDONGLEHOST && OEM_ANDROID */
}
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
static s32
wl_cfgscan_init_pno_escan(struct bcm_cfg80211 *cfg, struct net_device *ndev,
struct cfg80211_scan_request *request)
{
struct wiphy *wiphy = bcmcfg_to_wiphy(cfg);
dhd_pub_t *dhdp = (dhd_pub_t *)(cfg->pub);
int err = 0;
mutex_lock(&cfg->scan_sync);
LOG_TS(cfg, scan_start);
if (wl_get_drv_status_all(cfg, SCANNING)) {
_wl_cfgscan_cancel_scan(cfg);
}
wl_set_drv_status(cfg, SCANNING, ndev);
WL_PNO((">>> Doing targeted ESCAN on PNO event\n"));
err = wl_do_escan(cfg, wiphy, ndev, request);
if (err) {
wl_clr_drv_status(cfg, SCANNING, ndev);
mutex_unlock(&cfg->scan_sync);
WL_ERR(("targeted escan failed. err:%d\n", err));
return err;
}
DBG_EVENT_LOG(dhdp, WIFI_EVENT_DRIVER_PNO_SCAN_REQUESTED);
cfg->sched_scan_running = TRUE;
mutex_unlock(&cfg->scan_sync);
return err;
}
static s32
wl_cfgscan_update_v3_schedscan_results(struct bcm_cfg80211 *cfg, struct net_device *ndev,
wl_pfn_scanresults_v3_t *pfn_result, uint32 event_type)
{
int err = 0;
wl_pfn_net_info_v3_t *netinfo, *pnetinfo;
struct cfg80211_scan_request *request = NULL;
struct cfg80211_ssid ssid[MAX_PFN_LIST_COUNT];
struct ieee80211_channel *channel = NULL;
struct wiphy *wiphy = bcmcfg_to_wiphy(cfg);
dhd_pub_t *dhdp = (dhd_pub_t *)(cfg->pub);
log_conn_event_t *event_data = NULL;
tlv_log *tlv_data = NULL;
u32 alloc_len = 0;
int channel_req = 0;
u32 payload_len;
if (event_type == WLC_E_PFN_NET_LOST) {
WL_PNO(("Do Nothing %d\n", event_type));
return 0;
}
WL_INFORM_MEM(("PFN NET FOUND event. count:%d \n", pfn_result->count));
pnetinfo = (wl_pfn_net_info_v3_t *)pfn_result->netinfo;
if (pfn_result->count > 0) {
int i;
if (pfn_result->count > MAX_PFN_LIST_COUNT) {
pfn_result->count = MAX_PFN_LIST_COUNT;
}
bzero(&ssid, sizeof(ssid));
request = (struct cfg80211_scan_request *)MALLOCZ(cfg->osh,
sizeof(*request) + sizeof(*request->channels) * pfn_result->count);
channel = (struct ieee80211_channel *)MALLOCZ(cfg->osh,
(sizeof(struct ieee80211_channel) * pfn_result->count));
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) + (3 * sizeof(tlv_log)) +
DOT11_MAX_SSID_LEN + sizeof(uint16) + sizeof(int16);
event_data = (log_conn_event_t *)MALLOCZ(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));
err = -ENOMEM;
goto out_err;
}
}
for (i = 0; i < pfn_result->count; i++) {
u16 ssid_len;
u8 ssid_buf[DOT11_MAX_SSID_LEN + 1] = {0};
netinfo = &pnetinfo[i];
/* 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 = ssid_len = MIN(DOT11_MAX_SSID_LEN,
netinfo->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->pfnsubnet.u.SSID, ssid_len);
request->n_ssids++;
channel_req = netinfo->pfnsubnet.chanspec;
channel[i].center_freq = wl_channel_to_frequency(
wf_chspec_ctlchan(netinfo->pfnsubnet.chanspec),
CHSPEC_BAND(netinfo->pfnsubnet.chanspec));
channel[i].band =
wl_get_nl80211_band(CHSPEC_BAND(netinfo->pfnsubnet.chanspec));
channel[i].flags |= IEEE80211_CHAN_NO_HT40;
request->channels[i] = &channel[i];
request->n_channels++;
(void)memcpy_s(ssid_buf, IEEE80211_MAX_SSID_LEN,
ssid[i].ssid, ssid_len);
ssid_buf[ssid_len] = '\0';
WL_INFORM_MEM(("[PNO] SSID:%s chanspec:0x%x freq:%d band:%d\n",
ssid_buf, netinfo->pfnsubnet.chanspec,
channel[i].center_freq, channel[i].band));
if (CAN_SLEEP() && 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->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->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_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);
return err;
}
p2p_scan(cfg) = false;
}
err = wl_cfgscan_init_pno_escan(cfg, ndev, request);
if (err) {
goto out_err;
}
}
else {
WL_ERR(("FALSE PNO Event. (pfn_count == 0) \n"));
}
out_err:
if (request) {
MFREE(cfg->osh, request,
sizeof(*request) + sizeof(*request->channels) * pfn_result->count);
}
if (channel) {
MFREE(cfg->osh, channel,
(sizeof(struct ieee80211_channel) * pfn_result->count));
}
if (event_data) {
MFREE(cfg->osh, event_data, alloc_len);
}
return err;
}
/* If target scan is not reliable, set the below define to "1" to do a
* full escan
*/
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;
wl_pfn_scanresults_v3_t *pfn_result_v3 = (wl_pfn_scanresults_v3_t *)data;
int n_pfn_results = 0;
log_conn_event_t *event_data = NULL;
tlv_log *tlv_data = NULL;
u32 alloc_len = 0;
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) + (3 * sizeof(tlv_log)) +
DOT11_MAX_SSID_LEN + sizeof(uint16) + sizeof(int16);
event_data = (log_conn_event_t *)MALLOCZ(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;
}
}
for (i = 0; i < n_pfn_results; i++) {
netinfo = &pnetinfo[i];
/* This looks useless, shouldn't Coverity complain? */
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 (CAN_SLEEP() && 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_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;
}
err = wl_cfgscan_init_pno_escan(cfg, ndev, request);
if (err) {
goto out_err;
}
}
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) + (3 * sizeof(tlv_log)) +
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;
}
}
for (i = 0; i < n_pfn_results; i++) {
netinfo_v2 = &pnetinfo_v2[i];
/* This looks useless, shouldn't Coverity complain? */
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 (CAN_SLEEP() && 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_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;
}
err = wl_cfgscan_init_pno_escan(cfg, ndev, request);
if (err) {
goto out_err;
}
}
else {
WL_ERR(("FALSE PNO Event. (pfn_count == 0) \n"));
}
} else if (pfn_result_v3->version == PFN_SCANRESULT_VERSION_V3) {
err = wl_cfgscan_update_v3_schedscan_results(cfg, ndev,
pfn_result_v3, e->event_type);
if (err) {
goto out_err;
}
} else {
WL_ERR(("Unsupported version %d, expected %d or %d\n", pfn_result_v1->version,
PFN_SCANRESULT_VERSION_V1, PFN_SCANRESULT_VERSION_V2));
err = -EINVAL;
}
out_err:
mutex_lock(&cfg->scan_sync);
if (err) {
/* Notify upper layer that sched scan has stopped so that
* upper layer can attempt fresh scan.
*/
if (cfg->sched_scan_req) {
WL_ERR(("sched_scan stopped\n"));
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0))
cfg80211_sched_scan_stopped(wiphy, cfg->sched_scan_req->reqid);
#else
cfg80211_sched_scan_stopped(wiphy);
#endif /* KERNEL > 4.11.0 */
cfg->sched_scan_req = NULL;
} else {
WL_ERR(("sched scan req null!\n"));
}
cfg->sched_scan_running = FALSE;
CLR_TS(cfg, scan_start);
}
mutex_unlock(&cfg->scan_sync);
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) {
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
/* CUSTOMER_HW4 has other PNO wakelock time by RB:5911 */
mutex_lock(&cfg->usr_sync);
/* TODO: Use cfg80211_sched_scan_results(wiphy); */
/* GregG : WAR as to supplicant busy and not allowed Kernel to suspend */
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);
MFREE(cfg->osh, ptr, send_evt_bytes);
} 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, send_evt_bytes);
} 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;
}
void
wl_cfgscan_listen_complete_work(struct work_struct *work)
{
struct bcm_cfg80211 *cfg = NULL;
BCM_SET_CONTAINER_OF(cfg, work, struct bcm_cfg80211, loc.work.work);
WL_ERR(("listen timeout\n"));
/* listen not completed. Do recovery */
if (!cfg->loc.in_progress) {
WL_ERR(("No listen in progress!\n"));
return;
}
wl_cfgscan_notify_listen_complete(cfg);
}
s32
wl_cfgscan_notify_listen_complete(struct bcm_cfg80211 *cfg)
{
WL_DBG(("listen on channel complete! cookie:%llu\n", cfg->last_roc_id));
if (cfg->loc.wdev && cfg->loc.in_progress) {
#if defined(WL_CFG80211_P2P_DEV_IF)
cfg80211_remain_on_channel_expired(cfg->loc.wdev, cfg->last_roc_id,
&cfg->remain_on_chan, GFP_KERNEL);
#else
cfg80211_remain_on_channel_expired(cfg->loc.wdev->netdev, cfg->last_roc_id,
&cfg->remain_on_chan, cfg->remain_on_chan_type, GFP_KERNEL);
#endif
cfg->loc.in_progress = false;
cfg->loc.wdev = NULL;
}
return BCME_OK;
}
static void
wl_init_scan_params(struct bcm_cfg80211 *cfg, u8 *params, u16 params_size,
u32 scan_type, u32 action, u32 passive_time)
{
u32 sync_id = 0;
wl_escan_params_t *eparams = NULL;
wl_escan_params_v2_t *eparams_v2 = NULL;
wl_scan_params_t *scanparams = NULL;
wl_scan_params_v2_t *scanparams_v2 = NULL;
wl_escan_set_sync_id(sync_id, cfg);
if (cfg->scan_params_v2) {
eparams_v2 = (wl_escan_params_v2_t *)params;
eparams_v2->version = htod32(ESCAN_REQ_VERSION_V2);
eparams_v2->action = htod16(action);
eparams_v2->sync_id = sync_id;
scanparams_v2 = (wl_scan_params_v2_t *)&eparams_v2->params;
(void)memcpy_s(&scanparams_v2->bssid, ETHER_ADDR_LEN, &ether_bcast, ETHER_ADDR_LEN);
scanparams_v2->version = htod16(WL_SCAN_PARAMS_VERSION_V2);
scanparams_v2->length = htod16(sizeof(wl_scan_params_v2_t));
scanparams_v2->bss_type = DOT11_BSSTYPE_ANY;
scanparams_v2->scan_type = htod32(scan_type);
scanparams_v2->nprobes = htod32(-1);
scanparams_v2->active_time = htod32(-1);
scanparams_v2->passive_time = htod32(passive_time);
scanparams_v2->home_time = htod32(-1);
bzero(&scanparams_v2->ssid, sizeof(wlc_ssid_t));
} else {
eparams = (wl_escan_params_t *)params;
eparams->version = htod32(ESCAN_REQ_VERSION);
eparams->action = htod16(action);
eparams->sync_id = sync_id;
scanparams = (wl_scan_params_t *)&eparams->params;
(void)memcpy_s(&scanparams->bssid, ETHER_ADDR_LEN, &ether_bcast, ETHER_ADDR_LEN);
scanparams->bss_type = DOT11_BSSTYPE_ANY;
scanparams->scan_type = 0;
scanparams->nprobes = htod32(-1);
scanparams->active_time = htod32(-1);
scanparams->passive_time = htod32(passive_time);
scanparams->home_time = htod32(-1);
bzero(&scanparams->ssid, sizeof(wlc_ssid_t));
}
}
/* timeout for recoverying upper layer statemachine */
#define WL_LISTEN_TIMEOUT 3000u
s32
wl_cfgscan_cancel_listen_on_channel(struct bcm_cfg80211 *cfg, bool notify_user)
{
WL_DBG(("Enter\n"));
mutex_lock(&cfg->scan_sync);
if (!cfg->loc.in_progress) {
WL_ERR(("listen not in progress. do nothing\n"));
goto exit;
}
if (delayed_work_pending(&cfg->loc.work)) {
cancel_delayed_work_sync(&cfg->loc.work);
}
/* abort scan listen */
_wl_cfgscan_cancel_scan(cfg);
if (notify_user) {
wl_cfgscan_notify_listen_complete(cfg);
}
cfg->loc.in_progress = false;
cfg->loc.wdev = NULL;
exit:
mutex_unlock(&cfg->scan_sync);
return 0;
}
s32
wl_cfgscan_listen_on_channel(struct bcm_cfg80211 *cfg, struct wireless_dev *wdev,
struct ieee80211_channel *channel, unsigned int duration)
{
u32 dwell = duration;
u32 chanspec, params_size;
u16 chanspec_num = 0;
s32 bssidx = -1;
s32 err = 0;
struct net_device *ndev = NULL;
u8 *params = NULL;
wl_escan_params_t *eparams = NULL;
wl_escan_params_v2_t *eparams_v2 = NULL;
wl_scan_params_t *scanparams = NULL;
wl_scan_params_v2_t *scanparams_v2 = NULL;
u16 *chanspec_list = NULL;
u32 channel_num = 0, scan_type = 0;
WL_DBG(("Enter \n"));
if (!wdev) {
WL_ERR(("wdev null!\n"));
return -EINVAL;
}
mutex_lock(&cfg->scan_sync);
if (wl_get_drv_status_all(cfg, SCANNING)) {
WL_ERR(("Scanning in progress avoid listen on channel\n"));
err = -EBUSY;
goto exit;
}
if (cfg->loc.in_progress == true) {
WL_ERR(("Listen in progress\n"));
err = -EAGAIN;
goto exit;
}
bssidx = wl_get_bssidx_by_wdev(cfg, wdev);
if (bssidx < 0) {
WL_ERR(("invalid bssidx!\n"));
err = -EINVAL;
goto exit;
}
/* Use primary ndev for netless dev. BSSIDX will point to right I/F */
ndev = wdev->netdev ? wdev->netdev : bcmcfg_to_prmry_ndev(cfg);
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));
}
/* Single channel for listen case. Add a padd of u16 for alignment */
chanspec_num = 1;
params_size += (chanspec_num + 1);
/* Allocate space for populating single ssid in wl_escan_params_t struct */
params_size += ((u32) sizeof(struct wlc_ssid));
params = MALLOCZ(cfg->osh, params_size);
if (params == NULL) {
err = -ENOMEM;
WL_ERR(("listen fail. no mem.\n"));
goto exit;
}
scan_type = WL_SCANFLAGS_PASSIVE | WL_SCANFLAGS_LISTEN;
wl_init_scan_params(cfg, params, params_size,
scan_type, WL_SCAN_ACTION_START, dwell);
channel_num = (chanspec_num & WL_SCAN_PARAMS_COUNT_MASK);
if (cfg->scan_params_v2) {
eparams_v2 = (wl_escan_params_v2_t *)params;
scanparams_v2 = (wl_scan_params_v2_t *)&eparams_v2->params;
chanspec_list = scanparams_v2->channel_list;
scanparams_v2->channel_num = channel_num;
} else {
eparams = (wl_escan_params_t *)params;
scanparams = (wl_scan_params_t *)&eparams->params;
chanspec_list = scanparams->channel_list;
scanparams->channel_num = channel_num;
}
/* Copy the single listen channel */
chanspec = wl_freq_to_chanspec(channel->center_freq);
chanspec_list[0] = chanspec;
err = wldev_iovar_setbuf_bsscfg(ndev, "escan", params, params_size,
cfg->escan_ioctl_buf, WLC_IOCTL_MEDLEN, bssidx, &cfg->ioctl_buf_sync);
if (unlikely(err)) {
if (err == BCME_EPERM) {
/* Scan Not permitted at this point of time */
WL_DBG((" listen not permitted at this time (%d)\n", err));
} else {
WL_ERR((" listen set error (%d)\n", err));
}
goto exit;
} else {
unsigned long listen_timeout = dwell + WL_LISTEN_TIMEOUT;
WL_DBG(("listen started. chanspec:%x\n", chanspec));
cfg->loc.in_progress = true;
cfg->loc.wdev = wdev;
if (schedule_delayed_work(&cfg->loc.work,
msecs_to_jiffies(listen_timeout))) {
#if defined(BCMDONGLEHOST) && defined(OEM_ANDROID)
DHD_PM_WAKE_LOCK_TIMEOUT(cfg->pub, listen_timeout);
#endif /* BCMDONGLEHOST && OEM_ANDROID */
} else {
WL_ERR(("Can't schedule listen work handler\n"));
}
}
exit:
if (params) {
MFREE(cfg->osh, params, params_size);
}
mutex_unlock(&cfg->scan_sync);
return err;
}
#define LONG_LISTEN_TIME 2000
#ifdef WL_CFG80211_VSDB_PRIORITIZE_SCAN_REQUEST
static void
wl_priortize_scan_over_listen(struct bcm_cfg80211 *cfg,
struct net_device *ndev, unsigned int duration)
{
WL_DBG(("scan is running. go to fake listen state\n"));
wl_set_drv_status(cfg, FAKE_REMAINING_ON_CHANNEL, ndev);
WL_DBG(("cancel current listen timer \n"));
del_timer_sync(&cfg->p2p->listen_timer);
wl_clr_p2p_status(cfg, LISTEN_EXPIRED);
INIT_TIMER(&cfg->p2p->listen_timer,
wl_cfgp2p_listen_expired, duration, 0);
}
#endif /* WL_CFG80211_VSDB_PRIORITIZE_SCAN_REQUEST */
/* Few vendors use hard coded static ndev p2p0 for p2p disc */
#define IS_P2P_DISC_NDEV(wdev) \
(wdev->netdev ? (strncmp(wdev->netdev->name, "p2p0", strlen("p2p0")) == 0) : false)
s32
wl_cfgscan_remain_on_channel(struct wiphy *wiphy, bcm_struct_cfgdev *cfgdev,
struct ieee80211_channel *channel,
#if !defined(WL_CFG80211_P2P_DEV_IF)
enum nl80211_channel_type channel_type,
#endif /* WL_CFG80211_P2P_DEV_IF */
unsigned int duration, u64 *cookie)
{
s32 target_channel;
u32 id;
s32 err = BCME_OK;
struct net_device *ndev = NULL;
struct bcm_cfg80211 *cfg = wiphy_priv(wiphy);
struct wireless_dev *wdev;
RETURN_EIO_IF_NOT_UP(cfg);
mutex_lock(&cfg->usr_sync);
ndev = cfgdev_to_wlc_ndev(cfgdev, cfg);
#if defined(WL_CFG80211_P2P_DEV_IF)
wdev = cfgdev;
#else
wdev = ndev_to_wdev(ndev);
#endif
if (!wdev) {
WL_ERR(("wdev null\n"));
err = -EINVAL;
goto exit;
}
target_channel = ieee80211_frequency_to_channel(channel->center_freq);
WL_DBG(("Enter, channel: %d, duration ms (%d) scan_state:%d\n",
target_channel, duration,
(wl_get_drv_status(cfg, SCANNING, ndev)) ? TRUE : FALSE));
#ifdef WL_BCNRECV
/* check fakeapscan in progress then abort */
wl_android_bcnrecv_stop(ndev, WL_BCNRECV_LISTENBUSY);
#endif /* WL_BCNRECV */
#if defined(WL_CFG80211_P2P_DEV_IF)
if ((wdev->iftype == NL80211_IFTYPE_P2P_DEVICE) || IS_P2P_DISC_NDEV(wdev))
#else
if (cfg->p2p)
#endif
{
/* p2p discovery */
if (!cfg->p2p) {
WL_ERR(("cfg->p2p is not initialized\n"));
err = BCME_ERROR;
goto exit;
}
#ifdef P2P_LISTEN_OFFLOADING
if (wl_get_p2p_status(cfg, DISC_IN_PROGRESS)) {
WL_ERR(("P2P_FIND: Discovery offload is in progress\n"));
err = -EAGAIN;
goto exit;
}
#endif /* P2P_LISTEN_OFFLOADING */
if (wl_get_drv_status_all(cfg, SCANNING)) {
#ifdef WL_CFG80211_VSDB_PRIORITIZE_SCAN_REQUEST
if (duration > LONG_LISTEN_TIME) {
wl_cfgscan_cancel_scan(cfg);
} else {
wl_priortize_scan_over_listen(cfg, ndev, duration);
err = BCME_OK;
goto exit;
}
#else
wl_cfgscan_cancel_scan(cfg);
#endif /* WL_CFG80211_VSDB_PRIORITIZE_SCAN_REQUEST */
}
#ifdef WL_CFG80211_SYNC_GON
if (wl_get_drv_status_all(cfg, WAITING_NEXT_ACT_FRM_LISTEN)) {
/* Do not enter listen mode again if we are in listen mode already
* for next af. Remain on channel completion will be returned by
* af completion.
*/
#ifdef WL_CFG80211_VSDB_PRIORITIZE_SCAN_REQUEST
wl_set_drv_status(cfg, FAKE_REMAINING_ON_CHANNEL, ndev);
#else
wl_set_drv_status(cfg, REMAINING_ON_CHANNEL, ndev);
#endif
goto exit;
}
#endif /* WL_CFG80211_SYNC_GON */
if (!cfg->p2p->on) {
/* In case of p2p_listen command, supplicant may send
* remain_on_channel without turning on P2P
*/
p2p_on(cfg) = true;
}
err = wl_cfgp2p_enable_discovery(cfg, ndev, NULL, 0);
if (unlikely(err)) {
goto exit;
}
err = wl_cfgp2p_discover_listen(cfg, target_channel, duration);
if (err == BCME_OK) {
wl_set_drv_status(cfg, REMAINING_ON_CHANNEL, ndev);
} else {
#ifdef WL_CFG80211_VSDB_PRIORITIZE_SCAN_REQUEST
if (err == BCME_BUSY) {
/* if failed, firmware may be internal scanning state.
* so other scan request shall not abort it
*/
wl_set_drv_status(cfg, FAKE_REMAINING_ON_CHANNEL, ndev);
/* WAR: set err = ok to prevent cookie mismatch in wpa_supplicant
* and expire timer will send a completion to the upper layer
*/
err = BCME_OK;
}
#endif /* WL_CFG80211_VSDB_PRIORITIZE_SCAN_REQUEST */
}
} else if (wdev->iftype == NL80211_IFTYPE_STATION ||
wdev->iftype == NL80211_IFTYPE_AP) {
WL_DBG(("LISTEN ON CHANNEL\n"));
err = wl_cfgscan_listen_on_channel(cfg, wdev, channel, duration);
}
exit:
if (err == BCME_OK) {
WL_DBG(("Success\n"));
(void)memcpy_s(&cfg->remain_on_chan, sizeof(struct ieee80211_channel),
channel, sizeof(struct ieee80211_channel));
#if defined(WL_ENABLE_P2P_IF)
cfg->remain_on_chan_type = channel_type;
#endif /* WL_ENABLE_P2P_IF */
id = ++cfg->last_roc_id;
if (id == 0) {
id = ++cfg->last_roc_id;
}
*cookie = id;
/* Notify userspace that listen has started */
CFG80211_READY_ON_CHANNEL(cfgdev, *cookie, channel, channel_type, duration, flags);
WL_INFORM_MEM(("listen started on channel:%d duration (ms):%d cookie:%llu\n",
target_channel, duration, *cookie));
} else {
WL_ERR(("Fail to Set (err=%d cookie:%llu)\n", err, *cookie));
wl_flush_fw_log_buffer(ndev, FW_LOGSET_MASK_ALL);
}
mutex_unlock(&cfg->usr_sync);
return err;
}
s32
wl_cfgscan_cancel_remain_on_channel(struct wiphy *wiphy,
bcm_struct_cfgdev *cfgdev, u64 cookie)
{
s32 err = 0;
struct bcm_cfg80211 *cfg = wiphy_priv(wiphy);
#ifdef P2PLISTEN_AP_SAMECHN
struct net_device *dev;
#endif /* P2PLISTEN_AP_SAMECHN */
RETURN_EIO_IF_NOT_UP(cfg);
#ifdef DHD_IFDEBUG
PRINT_WDEV_INFO(cfgdev);
#endif /* DHD_IFDEBUG */
mutex_lock(&cfg->usr_sync);
#if defined(WL_CFG80211_P2P_DEV_IF)
WL_DBG(("cancel listen for iftype:%d\n", cfgdev->iftype));
if ((cfgdev->iftype != NL80211_IFTYPE_P2P_DEVICE) &&
!IS_P2P_DISC_NDEV(cfgdev)) {
/* Handle non-p2p cases here */
err = wl_cfgscan_cancel_listen_on_channel(cfg, false);
goto exit;
}
#else
WL_DBG(("cancel listen for netdev_ifidx: %d \n", cfgdev->ifindex));
#endif /* WL_CFG80211_P2P_DEV_IF */
#ifdef P2PLISTEN_AP_SAMECHN
if (cfg && cfg->p2p_resp_apchn_status) {
dev = bcmcfg_to_prmry_ndev(cfg);
wl_cfg80211_set_p2p_resp_ap_chn(dev, 0);
cfg->p2p_resp_apchn_status = false;
WL_DBG(("p2p_resp_apchn_status Turn OFF \n"));
}
#endif /* P2PLISTEN_AP_SAMECHN */
if (cfg->last_roc_id == cookie) {
WL_DBG(("cancel p2p listen. cookie:%llu\n", cookie));
wl_cfgp2p_set_p2p_mode(cfg, WL_P2P_DISC_ST_SCAN, 0, 0,
wl_to_p2p_bss_bssidx(cfg, P2PAPI_BSSCFG_DEVICE));
} else {
WL_ERR(("wl_cfg80211_cancel_remain_on_channel: ignore, request cookie(%llu)"
" is not matched. (cur : %llu)\n",
cookie, cfg->last_roc_id));
}
#if defined(WL_CFG80211_P2P_DEV_IF)
exit:
#endif
mutex_unlock(&cfg->usr_sync);
return err;
}
#ifdef WL_GET_RCC
int
wl_android_get_roam_scan_chanlist(struct bcm_cfg80211 *cfg)
{
s32 err = BCME_OK;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0))
struct sk_buff *skb;
gfp_t kflags;
struct net_device *ndev;
struct wiphy *wiphy;
wlc_ssid_t *ssid = NULL;
wl_roam_channel_list_t channel_list;
uint16 channels[MAX_ROAM_CHANNEL] = {0};
int i = 0;
ndev = bcmcfg_to_prmry_ndev(cfg);
wiphy = bcmcfg_to_wiphy(cfg);
kflags = in_atomic() ? GFP_ATOMIC : GFP_KERNEL;
skb = CFG80211_VENDOR_EVENT_ALLOC(wiphy, ndev_to_wdev(ndev),
BRCM_VENDOR_GET_RCC_EVENT_BUF_LEN, BRCM_VENDOR_EVENT_RCC_INFO, kflags);
if (!skb) {
WL_ERR(("skb alloc failed"));
return BCME_NOMEM;
}
/* Get Current SSID */
ssid = (struct wlc_ssid *)wl_read_prof(cfg, ndev, WL_PROF_SSID);
if (!ssid) {
WL_ERR(("No SSID found in the saved profile\n"));
err = BCME_ERROR;
goto fail;
}
/* Get Current RCC List */
err = wldev_iovar_getbuf(ndev, "roamscan_channels", 0, 0,
(void *)&channel_list, sizeof(channel_list), NULL);
if (err) {
WL_ERR(("Failed to get roamscan channels, err = %d\n", err));
goto fail;
}
if (channel_list.n > MAX_ROAM_CHANNEL) {
WL_ERR(("Invalid roamscan channels count(%d)\n", channel_list.n));
goto fail;
}
WL_DBG(("SSID %s(%d), RCC(%d)\n", ssid->SSID, ssid->SSID_len, channel_list.n));
for (i = 0; i < channel_list.n; i++) {
channels[i] = CHSPEC_CHANNEL(channel_list.channels[i]);
WL_DBG(("Chanspec[%d] CH:%03d(0x%04x)\n",
i, channels[i], channel_list.channels[i]));
}
err = nla_put_string(skb, RCC_ATTRIBUTE_SSID, ssid->SSID);
if (unlikely(err)) {
WL_ERR(("nla_put_string RCC_ATTRIBUTE_SSID failed\n"));
goto fail;
}
err = nla_put_u32(skb, RCC_ATTRIBUTE_SSID_LEN, ssid->SSID_len);
if (unlikely(err)) {
WL_ERR(("nla_put_u32 RCC_ATTRIBUTE_SSID_LEN failed\n"));
goto fail;
}
err = nla_put_u32(skb, RCC_ATTRIBUTE_NUM_CHANNELS, channel_list.n);
if (unlikely(err)) {
WL_ERR(("nla_put_u32 RCC_ATTRIBUTE_NUM_CHANNELS failed\n"));
goto fail;
}
err = nla_put(skb, RCC_ATTRIBUTE_CHANNEL_LIST,
sizeof(uint16) * MAX_ROAM_CHANNEL, channels);
if (unlikely(err)) {
WL_ERR(("nla_put RCC_ATTRIBUTE_CHANNEL_LIST failed\n"));
goto fail;
}
cfg80211_vendor_event(skb, kflags);
return err;
fail:
if (skb) {
nlmsg_free(skb);
}
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0) */
return err;
}
#endif /* WL_GET_RCC */
/*
* This function prepares assoc channel/s
*/
s32
wl_get_assoc_channels(struct bcm_cfg80211 *cfg,
struct net_device *dev, wlcfg_assoc_info_t *info)
{
#ifdef ESCAN_CHANNEL_CACHE
s32 err;
u32 max_channels = MAX_ROAM_CHANNEL;
u16 rcc_chan_cnt = 0;
/*
* If bcast join 'OR' no channel information is provided by user space,
* then use channels from ESCAN_CHANNEL_CACHE. For other cases where target
* channel is available, update RCC via iovar.
*
* For a given SSID there might multiple APs on different channels and FW
* would scan all those channels before deciding up on the AP.
*/
if (cfg->rcc_enabled) {
wlc_ssid_t ssid;
int band;
chanspec_t chanspecs[MAX_ROAM_CHANNEL] = {0};
chanspec_t target_chspec;
err = wldev_get_band(dev, &band);
if (!err) {
set_roam_band(band);
}
if (memcpy_s(ssid.SSID, sizeof(ssid.SSID), info->ssid, info->ssid_len) != BCME_OK) {
WL_ERR(("ssid copy failed\n"));
return -EINVAL;
}
ssid.SSID_len = (uint32)info->ssid_len;
if (info->targeted_join && info->chanspecs[0]) {
target_chspec = info->chanspecs[0];
} else {
target_chspec = INVCHANSPEC;
}
rcc_chan_cnt = get_roam_channel_list(cfg, target_chspec, chanspecs,
max_channels, &ssid, ioctl_version);
if ((!info->targeted_join) || (info->bssid_hint) ||
(info->chan_cnt == 0)) {
#if !defined(DISABLE_FW_NW_SEL_FOR_6G) && defined(WL_6G_BAND)
int i;
/* If 6G AP is present, override bssid_hint with our fw nw
* selection. Supplicant bssid_hint logic doesn't have support for
* 6G, HE, OCE load IE support
*/
for (i = 0; i < rcc_chan_cnt; i++) {
if (CHSPEC_IS6G(chanspecs[i])) {
WL_INFORM_MEM(("6G channel in rcc. use fw nw sel\n"));
/* skip bssid hint inclusion and provide bcast bssid */
info->bssid_hint = false;
(void)memcpy_s(&info->bssid,
ETH_ALEN, &ether_bcast, ETH_ALEN);
break;
}
}
#endif /* !DISABLE_FW_NW_SEL_FOR_6G && WL_6G_BAND */
/* Use RCC channels as part of join params */
info->chan_cnt = rcc_chan_cnt;
if (memcpy_s(info->chanspecs, sizeof(info->chanspecs), chanspecs,
(sizeof(chanspec_t) * rcc_chan_cnt)) != BCME_OK) {
WL_ERR(("chanspec copy failed!\n"));
return -EINVAL;
}
}
}
#endif /* ESCAN_CHANNEL_CACHE */
WL_DBG_MEM(("channel cnt:%d\n", info->chan_cnt));
return BCME_OK;
}
#ifdef DHD_GET_VALID_CHANNELS
bool
wl_cfgscan_is_dfs_set(wifi_band band)
{
switch (band) {
case WIFI_BAND_A_DFS:
case WIFI_BAND_A_WITH_DFS:
case WIFI_BAND_ABG_WITH_DFS:
case WIFI_BAND_24GHZ_5GHZ_WITH_DFS_6GHZ:
return true;
default:
return false;
}
return false;
}
s32
wl_cfgscan_get_band_freq_list(struct bcm_cfg80211 *cfg, int band,
uint16 *list, uint32 *num_channels)
{
s32 err = BCME_OK;
uint32 i, freq, list_count, count = 0;
struct net_device *dev = bcmcfg_to_prmry_ndev(cfg);
uint32 chspec, chaninfo;
bool dfs_set = false;
dfs_set = wl_cfgscan_is_dfs_set(band);
err = wldev_iovar_getbuf_bsscfg(dev, "chan_info_list", NULL,
0, list, CHANINFO_LIST_BUF_SIZE, 0, &cfg->ioctl_buf_sync);
if (err == BCME_UNSUPPORTED) {
WL_INFORM(("get chan_info_list, UNSUPPORTED\n"));
return err;
} else if (err != BCME_OK) {
WL_ERR(("get chan_info_list err(%d)\n", err));
return err;
}
list_count = ((wl_chanspec_list_v1_t *)list)->count;
for (i = 0; i < list_count; i++) {
chspec = dtoh32(((wl_chanspec_list_v1_t *)list)->chspecs[i].chanspec);
chaninfo = dtoh32(((wl_chanspec_list_v1_t *)list)->chspecs[i].chaninfo);
freq = wl_channel_to_frequency(wf_chspec_ctlchan(chspec),
CHSPEC_BAND(chspec));
if (((band & WIFI_BAND_BG) && CHSPEC_IS2G(chspec)) ||
((band & WIFI_BAND_6GHZ) && CHSPEC_IS6G(chspec))) {
/* add 2g/6g channels */
list[i] = freq;
count++;
}
/* handle 5g separately */
if (CHSPEC_IS5G(chspec)) {
if (!((band == WIFI_BAND_A_DFS) && IS_DFS(chaninfo)) &&
!(band & WIFI_BAND_A)) {
/* Not DFS only case nor 5G case */
continue;
}
if ((band & WIFI_BAND_A) && !dfs_set && IS_DFS(chaninfo)) {
continue;
}
list[i] = freq;
count++;
}
}
*num_channels = count;
return err;
}
#endif /* DHD_GET_VALID_CHANNELS */