staging: wilc1000: remove the use of scan shadow buffer

Remove scan shadow buffer, which is used to store a copy of scan
results. Instead, use cfg80211 provided API's to retrieve required
info. Remove the helper functions which are operating on shadow buffer,
as it's not require now.
Signed-off-by: NAjay Singh <ajay.kathat@microchip.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/host_interface.c

@@ -210,7 +210,7 @@ static int handle_scan_done(struct wilc_vif *vif, enum scan_event evt)
 
 	scan_req = &hif_drv->usr_scan_req;
 	if (scan_req->scan_result) {
-		scan_req->scan_result(evt, NULL, scan_req->arg, NULL);
+		scan_req->scan_result(evt, NULL, scan_req->arg);
 		scan_req->scan_result = NULL;
 	}
 
@@ -564,10 +564,10 @@ static void handle_connect_timeout(struct work_struct *work)
 	kfree(msg);
 }
 
-static void host_int_fill_join_bss_param(struct join_bss_param *param, u8 *ies,
-					 u16 *out_index, u8 *pcipher_tc,
-					 u8 *auth_total_cnt, u32 tsf_lo,
-					 u8 *rates_no)
+static void host_int_fill_join_bss_param(struct join_bss_param *param,
+					 const u8 *ies, u16 *out_index,
+					 u8 *pcipher_tc, u8 *auth_total_cnt,
+					 u32 tsf_lo, u8 *rates_no)
 {
 	u8 ext_rates_no;
 	u16 offset;
@@ -700,31 +700,44 @@ static void host_int_fill_join_bss_param(struct join_bss_param *param, u8 *ies,
 	*out_index = index;
 }
 
-static void *host_int_parse_join_bss_param(struct network_info *info)
+void *wilc_parse_join_bss_param(struct cfg80211_bss *bss)
 {
 	struct join_bss_param *param;
 	u16 index = 0;
 	u8 rates_no = 0;
 	u8 pcipher_total_cnt = 0;
 	u8 auth_total_cnt = 0;
+	const u8 *tim_elm, *ssid_elm;
+	const struct cfg80211_bss_ies *ies = bss->ies;
 
 	param = kzalloc(sizeof(*param), GFP_KERNEL);
 	if (!param)
 		return NULL;
 
-	param->dtim_period = info->dtim_period;
-	param->beacon_period = info->beacon_period;
-	param->cap_info = info->cap_info;
-	memcpy(param->bssid, info->bssid, 6);
-	memcpy((u8 *)param->ssid, info->ssid, info->ssid_len + 1);
-	param->ssid_len = info->ssid_len;
+	param->beacon_period = bss->beacon_interval;
+	param->cap_info = bss->capability;
+	ether_addr_copy(param->bssid, bss->bssid);
+
+	ssid_elm = cfg80211_find_ie(WLAN_EID_SSID, ies->data, ies->len);
+	if (ssid_elm) {
+		param->ssid_len = ssid_elm[1];
+		if (param->ssid_len <= IEEE80211_MAX_SSID_LEN)
+			memcpy(param->ssid, ssid_elm + 2, param->ssid_len);
+		else
+			param->ssid_len = 0;
+	}
+
+	tim_elm = cfg80211_find_ie(WLAN_EID_TIM, ies->data, ies->len);
+	if (tim_elm && tim_elm[1] >= 2)
+		param->dtim_period = tim_elm[3];
+
 	memset(param->rsn_pcip_policy, 0xFF, 3);
 	memset(param->rsn_auth_policy, 0xFF, 3);
 
-	while (index < info->ies_len)
-		host_int_fill_join_bss_param(param, info->ies, &index,
+	while (index < ies->len)
+		host_int_fill_join_bss_param(param, ies->data, &index,
 					     &pcipher_total_cnt,
-					     &auth_total_cnt, info->tsf_lo,
+					     &auth_total_cnt, ies->tsf,
 					     &rates_no);
 
 	return (void *)param;
@@ -829,57 +842,20 @@ static void handle_rcvd_ntwrk_info(struct work_struct *work)
 	struct host_if_msg *msg = container_of(work, struct host_if_msg, work);
 	struct wilc_vif *vif = msg->vif;
 	struct rcvd_net_info *rcvd_info = &msg->body.net_info;
-	u32 i;
-	bool found;
 	struct network_info *info = NULL;
-	void *params;
-	struct host_if_drv *hif_drv = vif->hif_drv;
-	struct user_scan_req *scan_req = &hif_drv->usr_scan_req;
-
-	found = true;
+	struct user_scan_req *scan_req = &vif->hif_drv->usr_scan_req;
 
 	if (!scan_req->scan_result)
 		goto done;
 
 	wilc_parse_network_info(rcvd_info->buffer, &info);
-	if (!info || !scan_req->scan_result) {
-		netdev_err(vif->ndev, "%s: info or scan result NULL\n",
+	if (!info) {
+		netdev_err(vif->ndev, "%s: info is NULL\n",
 			   __func__);
 		goto done;
 	}
 
-	for (i = 0; i < scan_req->ch_cnt; i++) {
-		if (memcmp(scan_req->net_info[i].bssid, info->bssid, 6) == 0) {
-			if (info->rssi <= scan_req->net_info[i].rssi) {
-				goto done;
-			} else {
-				scan_req->net_info[i].rssi = info->rssi;
-				found = false;
-				break;
-			}
-		}
-	}
-
-	if (found) {
-		if (scan_req->ch_cnt < MAX_NUM_SCANNED_NETWORKS) {
-			scan_req->net_info[scan_req->ch_cnt].rssi = info->rssi;
-
-			memcpy(scan_req->net_info[scan_req->ch_cnt].bssid,
-			       info->bssid, 6);
-
-			scan_req->ch_cnt++;
-
-			info->new_network = true;
-			params = host_int_parse_join_bss_param(info);
-
-			scan_req->scan_result(SCAN_EVENT_NETWORK_FOUND, info,
-					       scan_req->arg, params);
-		}
-	} else {
-		info->new_network = false;
-		scan_req->scan_result(SCAN_EVENT_NETWORK_FOUND, info,
-				      scan_req->arg, NULL);
-	}
+	scan_req->scan_result(SCAN_EVENT_NETWORK_FOUND, info, scan_req->arg);
 
 done:
 	kfree(rcvd_info->buffer);
@@ -1150,8 +1126,7 @@ int wilc_disconnect(struct wilc_vif *vif)
 
 	if (scan_req->scan_result) {
 		del_timer(&hif_drv->scan_timer);
-		scan_req->scan_result(SCAN_EVENT_ABORTED, NULL, scan_req->arg,
-				      NULL);
+		scan_req->scan_result(SCAN_EVENT_ABORTED, NULL, scan_req->arg);
 		scan_req->scan_result = NULL;
 	}
 
@@ -2131,8 +2106,7 @@ int wilc_deinit(struct wilc_vif *vif)
 
 	if (hif_drv->usr_scan_req.scan_result) {
 		hif_drv->usr_scan_req.scan_result(SCAN_EVENT_ABORTED, NULL,
-						  hif_drv->usr_scan_req.arg,
-						  NULL);
+						  hif_drv->usr_scan_req.arg);
 		hif_drv->usr_scan_req.scan_result = NULL;
 	}
 

drivers/staging/wilc1000/host_interface.h

@@ -19,7 +19,6 @@ enum {
 
 #define WILC_MAX_NUM_STA			9
 #define MAX_NUM_SCANNED_NETWORKS		100
-#define MAX_NUM_SCANNED_NETWORKS_SHADOW		130
 #define WILC_MAX_NUM_PROBED_SSID		10
 
 #define TX_MIC_KEY_LEN				8
@@ -29,8 +28,6 @@ enum {
 #define WILC_ADD_STA_LENGTH			40
 #define WILC_NUM_CONCURRENT_IFC			2
 
-#define NUM_RSSI                5
-
 enum {
 	WILC_SET_CFG = 0,
 	WILC_GET_CFG
@@ -38,12 +35,6 @@ enum {
 
 #define WILC_MAX_ASSOC_RESP_FRAME_SIZE   256
 
-struct rssi_history_buffer {
-	bool full;
-	u8 index;
-	s8 samples[NUM_RSSI];
-};
-
 struct network_info {
 	s8 rssi;
 	u16 cap_info;
@@ -53,15 +44,9 @@ struct network_info {
 	u16 beacon_period;
 	u8 dtim_period;
 	u8 ch;
-	unsigned long time_scan_cached;
-	unsigned long time_scan;
-	bool new_network;
-	u8 found;
 	u32 tsf_lo;
 	u8 *ies;
 	u16 ies_len;
-	void *join_params;
-	struct rssi_history_buffer rssi_history;
 	u64 tsf;
 };
 
@@ -129,11 +114,6 @@ enum cfg_param {
 	WILC_CFG_PARAM_RTS_THRESHOLD = BIT(3)
 };
 
-struct found_net_info {
-	u8 bssid[6];
-	s8 rssi;
-};
-
 enum scan_event {
 	SCAN_EVENT_NETWORK_FOUND	= 0,
 	SCAN_EVENT_DONE			= 1,
@@ -148,7 +128,7 @@ enum conn_event {
 };
 
 typedef void (*wilc_scan_result)(enum scan_event, struct network_info *,
-				 void *, void *);
+				 void *);
 
 typedef void (*wilc_connect_result)(enum conn_event,
 				     struct connect_info *,
@@ -178,7 +158,6 @@ struct user_scan_req {
 	wilc_scan_result scan_result;
 	void *arg;
 	u32 ch_cnt;
-	struct found_net_info net_info[MAX_NUM_SCANNED_NETWORKS];
 };
 
 struct user_conn_req {
@@ -307,4 +286,5 @@ int wilc_get_tx_power(struct wilc_vif *vif, u8 *tx_power);
 void wilc_scan_complete_received(struct wilc *wilc, u8 *buffer, u32 length);
 void wilc_network_info_received(struct wilc *wilc, u8 *buffer, u32 length);
 void wilc_gnrl_async_info_received(struct wilc *wilc, u8 *buffer, u32 length);
+void *wilc_parse_join_bss_param(struct cfg80211_bss *bss);
 #endif

drivers/staging/wilc1000/wilc_wfi_cfgoperations.c

@@ -29,9 +29,6 @@
 
 #define INVALID_CHANNEL			0
 
-#define nl80211_SCAN_RESULT_EXPIRE	(3 * HZ)
-#define SCAN_RESULT_EXPIRE		(40 * HZ)
-
 static const struct ieee80211_txrx_stypes
 	wilc_wfi_cfg80211_mgmt_types[NUM_NL80211_IFTYPES] = {
 	[NL80211_IFTYPE_STATION] = {
@@ -75,115 +72,8 @@ static u8 curr_channel;
 static u8 p2p_oui[] = {0x50, 0x6f, 0x9A, 0x09};
 static u8 p2p_vendor_spec[] = {0xdd, 0x05, 0x00, 0x08, 0x40, 0x03};
 
-#define AGING_TIME	(9 * 1000)
 #define DURING_IP_TIME_OUT	15000
 
-static void clear_shadow_scan(struct wilc_priv *priv)
-{
-	int i;
-
-	for (i = 0; i < priv->scanned_cnt; i++) {
-		kfree(priv->scanned_shadow[i].ies);
-		priv->scanned_shadow[i].ies = NULL;
-
-		kfree(priv->scanned_shadow[i].join_params);
-		priv->scanned_shadow[i].join_params = NULL;
-	}
-	priv->scanned_cnt = 0;
-}
-
-static u32 get_rssi_avg(struct network_info *network_info)
-{
-	u8 i;
-	int rssi_v = 0;
-	u8 num_rssi = (network_info->rssi_history.full) ?
-		       NUM_RSSI : (network_info->rssi_history.index);
-
-	for (i = 0; i < num_rssi; i++)
-		rssi_v += network_info->rssi_history.samples[i];
-
-	rssi_v /= num_rssi;
-	return rssi_v;
-}
-
-static void refresh_scan(struct wilc_priv *priv, bool direct_scan)
-{
-	struct wiphy *wiphy = priv->dev->ieee80211_ptr->wiphy;
-	int i;
-
-	for (i = 0; i < priv->scanned_cnt; i++) {
-		struct network_info *network_info;
-		s32 freq;
-		struct ieee80211_channel *channel;
-		int rssi;
-		struct cfg80211_bss *bss;
-
-		network_info = &priv->scanned_shadow[i];
-
-		if (!memcmp("DIRECT-", network_info->ssid, 7) && !direct_scan)
-			continue;
-
-		freq = ieee80211_channel_to_frequency((s32)network_info->ch,
-						      NL80211_BAND_2GHZ);
-		channel = ieee80211_get_channel(wiphy, freq);
-		rssi = get_rssi_avg(network_info);
-		bss = cfg80211_inform_bss(wiphy,
-					  channel,
-					  CFG80211_BSS_FTYPE_UNKNOWN,
-					  network_info->bssid,
-					  network_info->tsf,
-					  network_info->cap_info,
-					  network_info->beacon_period,
-					  (const u8 *)network_info->ies,
-					  (size_t)network_info->ies_len,
-					  (s32)rssi * 100,
-					  GFP_KERNEL);
-		cfg80211_put_bss(wiphy, bss);
-	}
-}
-
-static void reset_shadow_found(struct wilc_priv *priv)
-{
-	int i;
-
-	for (i = 0; i < priv->scanned_cnt; i++)
-		priv->scanned_shadow[i].found = 0;
-}
-
-static void update_scan_time(struct wilc_priv *priv)
-{
-	int i;
-
-	for (i = 0; i < priv->scanned_cnt; i++)
-		priv->scanned_shadow[i].time_scan = jiffies;
-}
-
-static void remove_network_from_shadow(struct timer_list *t)
-{
-	struct wilc_priv *priv = from_timer(priv, t, aging_timer);
-	unsigned long now = jiffies;
-	int i, j;
-
-	for (i = 0; i < priv->scanned_cnt; i++) {
-		if (!time_after(now, priv->scanned_shadow[i].time_scan +
-				(unsigned long)(SCAN_RESULT_EXPIRE)))
-			continue;
-		kfree(priv->scanned_shadow[i].ies);
-		priv->scanned_shadow[i].ies = NULL;
-
-		kfree(priv->scanned_shadow[i].join_params);
-
-		for (j = i; (j < priv->scanned_cnt - 1); j++)
-			priv->scanned_shadow[j] = priv->scanned_shadow[j + 1];
-
-		priv->scanned_cnt--;
-	}
-
-	if (priv->scanned_cnt != 0)
-		mod_timer(&priv->aging_timer,
-			  jiffies + msecs_to_jiffies(AGING_TIME));
-}
-
 static void clear_during_ip(struct timer_list *t)
 {
 	struct wilc_vif *vif = from_timer(vif, t, during_ip_timer);
@@ -191,87 +81,15 @@ static void clear_during_ip(struct timer_list *t)
 	vif->obtaining_ip = false;
 }
 
-static int is_network_in_shadow(struct network_info *nw_info,
-				struct wilc_priv *priv)
-{
-	int state = -1;
-	int i;
-
-	if (priv->scanned_cnt == 0) {
-		mod_timer(&priv->aging_timer,
-			  jiffies + msecs_to_jiffies(AGING_TIME));
-		state = -1;
-	} else {
-		for (i = 0; i < priv->scanned_cnt; i++) {
-			if (memcmp(priv->scanned_shadow[i].bssid,
-				   nw_info->bssid, 6) == 0) {
-				state = i;
-				break;
-			}
-		}
-	}
-	return state;
-}
-
-static void add_network_to_shadow(struct network_info *nw_info,
-				  struct wilc_priv *priv, void *join_params)
-{
-	int ap_found = is_network_in_shadow(nw_info, priv);
-	u32 ap_index = 0;
-	u8 rssi_index = 0;
-	struct network_info *shadow_nw_info;
-
-	if (priv->scanned_cnt >= MAX_NUM_SCANNED_NETWORKS_SHADOW)
-		return;
-
-	if (ap_found == -1) {
-		ap_index = priv->scanned_cnt;
-		priv->scanned_cnt++;
-	} else {
-		ap_index = ap_found;
-	}
-	shadow_nw_info = &priv->scanned_shadow[ap_index];
-	rssi_index = shadow_nw_info->rssi_history.index;
-	shadow_nw_info->rssi_history.samples[rssi_index++] = nw_info->rssi;
-	if (rssi_index == NUM_RSSI) {
-		rssi_index = 0;
-		shadow_nw_info->rssi_history.full = true;
-	}
-	shadow_nw_info->rssi_history.index = rssi_index;
-	shadow_nw_info->rssi = nw_info->rssi;
-	shadow_nw_info->cap_info = nw_info->cap_info;
-	shadow_nw_info->ssid_len = nw_info->ssid_len;
-	memcpy(shadow_nw_info->ssid, nw_info->ssid, nw_info->ssid_len);
-	memcpy(shadow_nw_info->bssid, nw_info->bssid, ETH_ALEN);
-	shadow_nw_info->beacon_period = nw_info->beacon_period;
-	shadow_nw_info->dtim_period = nw_info->dtim_period;
-	shadow_nw_info->ch = nw_info->ch;
-	shadow_nw_info->tsf = nw_info->tsf;
-	if (ap_found != -1)
-		kfree(shadow_nw_info->ies);
-	shadow_nw_info->ies = kmemdup(nw_info->ies, nw_info->ies_len,
-				      GFP_KERNEL);
-	if (shadow_nw_info->ies)
-		shadow_nw_info->ies_len = nw_info->ies_len;
-	else
-		shadow_nw_info->ies_len = 0;
-	shadow_nw_info->time_scan = jiffies;
-	shadow_nw_info->time_scan_cached = jiffies;
-	shadow_nw_info->found = 1;
-	if (ap_found != -1)
-		kfree(shadow_nw_info->join_params);
-	shadow_nw_info->join_params = join_params;
-}
-
 static void cfg_scan_result(enum scan_event scan_event,
 			    struct network_info *network_info,
-			    void *user_void, void *join_params)
+			    void *user_void)
 {
 	struct wilc_priv *priv;
 	struct wiphy *wiphy;
 	s32 freq;
 	struct ieee80211_channel *channel;
-	struct cfg80211_bss *bss = NULL;
+	struct cfg80211_bss *bss;
 
 	priv = user_void;
 	if (!priv->cfg_scanning)
@@ -291,51 +109,22 @@ static void cfg_scan_result(enum scan_event scan_event,
 		freq = ieee80211_channel_to_frequency((s32)network_info->ch,
 						      NL80211_BAND_2GHZ);
 		channel = ieee80211_get_channel(wiphy, freq);
-
 		if (!channel)
 			return;
 
-		if (network_info->new_network) {
-			if (priv->rcvd_ch_cnt >= MAX_NUM_SCANNED_NETWORKS)
-				return;
-
-			priv->rcvd_ch_cnt++;
-
-			add_network_to_shadow(network_info, priv, join_params);
-
-			if (memcmp("DIRECT-", network_info->ssid, 7))
-				return;
-
-			bss = cfg80211_inform_bss(wiphy,
-						  channel,
-						  CFG80211_BSS_FTYPE_UNKNOWN,
-						  network_info->bssid,
-						  network_info->tsf,
-						  network_info->cap_info,
-						  network_info->beacon_period,
-						  (const u8 *)network_info->ies,
-						  (size_t)network_info->ies_len,
-						  (s32)network_info->rssi * 100,
-						  GFP_KERNEL);
-			cfg80211_put_bss(wiphy, bss);
-		} else {
-			u32 i;
-
-			for (i = 0; i < priv->rcvd_ch_cnt; i++) {
-				if (memcmp(priv->scanned_shadow[i].bssid,
-					   network_info->bssid, 6) == 0)
-					break;
-			}
-
-			if (i >= priv->rcvd_ch_cnt)
-				return;
-
-			priv->scanned_shadow[i].rssi = network_info->rssi;
-			priv->scanned_shadow[i].time_scan = jiffies;
-		}
+		bss = cfg80211_inform_bss(wiphy,
+					  channel,
+					  CFG80211_BSS_FTYPE_UNKNOWN,
+					  network_info->bssid,
+					  network_info->tsf,
+					  network_info->cap_info,
+					  network_info->beacon_period,
+					  (const u8 *)network_info->ies,
+					  (size_t)network_info->ies_len,
+					  (s32)network_info->rssi * 100,
+					  GFP_KERNEL);
+		cfg80211_put_bss(wiphy, bss);
 	} else if (scan_event == SCAN_EVENT_DONE) {
-		refresh_scan(priv, false);
-
 		mutex_lock(&priv->scan_req_lock);
 
 		if (priv->scan_req) {
@@ -344,7 +133,6 @@ static void cfg_scan_result(enum scan_event scan_event,
 			};
 
 			cfg80211_scan_done(priv->scan_req, &info);
-			priv->rcvd_ch_cnt = 0;
 			priv->cfg_scanning = false;
 			priv->scan_req = NULL;
 		}
@@ -357,9 +145,6 @@ static void cfg_scan_result(enum scan_event scan_event,
 				.aborted = false,
 			};
 
-			update_scan_time(priv);
-			refresh_scan(priv, false);
-
 			cfg80211_scan_done(priv->scan_req, &info);
 			priv->cfg_scanning = false;
 			priv->scan_req = NULL;
@@ -368,17 +153,6 @@ static void cfg_scan_result(enum scan_event scan_event,
 	}
 }
 
-static inline bool wilc_cfg_scan_time_expired(struct wilc_priv *priv, int i)
-{
-	unsigned long now = jiffies;
-
-	if (time_after(now, priv->scanned_shadow[i].time_scan_cached +
-		       (unsigned long)(nl80211_SCAN_RESULT_EXPIRE - (1 * HZ))))
-		return true;
-	else
-		return false;
-}
-
 static void cfg_connect_result(enum conn_event conn_disconn_evt,
 			       struct connect_info *conn_info,
 			       u8 mac_status,
@@ -409,28 +183,10 @@ static void cfg_connect_result(enum conn_event conn_disconn_evt,
 			netdev_err(dev, "Unspecified failure\n");
 		}
 
-		if (connect_status == WLAN_STATUS_SUCCESS) {
-			bool scan_refresh = false;
-			u32 i;
-
+		if (connect_status == WLAN_STATUS_SUCCESS)
 			memcpy(priv->associated_bss, conn_info->bssid,
 			       ETH_ALEN);
 
-			for (i = 0; i < priv->scanned_cnt; i++) {
-				if (memcmp(priv->scanned_shadow[i].bssid,
-					   conn_info->bssid,
-					   ETH_ALEN) == 0) {
-					if (wilc_cfg_scan_time_expired(priv, i))
-						scan_refresh = true;
-
-					break;
-				}
-			}
-
-			if (scan_refresh)
-				refresh_scan(priv, true);
-		}
-
 		cfg80211_connect_result(dev, conn_info->bssid,
 					conn_info->req_ies,
 					conn_info->req_ies_len,
@@ -531,10 +287,6 @@ static int scan(struct wiphy *wiphy, struct cfg80211_scan_request *request)
 
 	priv->scan_req = request;
 
-	priv->rcvd_ch_cnt = 0;
-
-	reset_shadow_found(priv);
-
 	priv->cfg_scanning = true;
 	if (request->n_channels <= MAX_NUM_SCANNED_NETWORKS) {
 		for (i = 0; i < request->n_channels; i++) {
@@ -583,13 +335,13 @@ static int connect(struct wiphy *wiphy, struct net_device *dev,
 	struct wilc_priv *priv = wiphy_priv(wiphy);
 	struct wilc_vif *vif = netdev_priv(priv->dev);
 	struct host_if_drv *wfi_drv = priv->hif_drv;
-	struct network_info *nw_info;
 	int ret;
 	u32 i;
-	u32 sel_bssi_idx = UINT_MAX;
 	u8 security = WILC_FW_SEC_NO;
 	enum authtype auth_type = WILC_FW_AUTH_ANY;
 	u32 cipher_group;
+	struct cfg80211_bss *bss;
+	void *join_params;
 
 	vif->connecting = true;
 
@@ -598,39 +350,6 @@ static int connect(struct wiphy *wiphy, struct net_device *dev,
 	else
 		wfi_drv->p2p_connect = 0;
 
-	for (i = 0; i < priv->scanned_cnt; i++) {
-		if (sme->ssid_len == priv->scanned_shadow[i].ssid_len &&
-		    memcmp(priv->scanned_shadow[i].ssid,
-			   sme->ssid,
-			   sme->ssid_len) == 0) {
-			if (!sme->bssid) {
-				if (sel_bssi_idx == UINT_MAX ||
-				    priv->scanned_shadow[i].rssi >
-				    priv->scanned_shadow[sel_bssi_idx].rssi)
-					sel_bssi_idx = i;
-			} else {
-				if (memcmp(priv->scanned_shadow[i].bssid,
-					   sme->bssid,
-					   ETH_ALEN) == 0) {
-					sel_bssi_idx = i;
-					break;
-				}
-			}
-		}
-	}
-
-	if (sel_bssi_idx < priv->scanned_cnt) {
-		nw_info = &priv->scanned_shadow[sel_bssi_idx];
-	} else {
-		ret = -ENOENT;
-		goto out_error;
-	}
-
-	if (ether_addr_equal_unaligned(vif->bssid, nw_info->bssid)) {
-		ret = -EALREADY;
-		goto out_error;
-	}
-
 	memset(priv->wep_key, 0, sizeof(priv->wep_key));
 	memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
 
@@ -704,29 +423,54 @@ static int connect(struct wiphy *wiphy, struct net_device *dev,
 			auth_type = WILC_FW_AUTH_IEEE8021;
 	}
 
-	curr_channel = nw_info->ch;
+	bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid, sme->ssid,
+			       sme->ssid_len, IEEE80211_BSS_TYPE_ANY,
+			       IEEE80211_PRIVACY(sme->privacy));
+	if (!bss) {
+		ret = -EINVAL;
+		goto out_error;
+	}
+
+	if (ether_addr_equal_unaligned(vif->bssid, bss->bssid)) {
+		ret = -EALREADY;
+		goto out_put_bss;
+	}
+
+	join_params = wilc_parse_join_bss_param(bss);
+	if (!join_params) {
+		netdev_err(dev, "%s: failed to construct join param\n",
+			   __func__);
+		ret = -EINVAL;
+		goto out_put_bss;
+	}
+
+	curr_channel = ieee80211_frequency_to_channel(bss->channel->center_freq);
 
 	if (!wfi_drv->p2p_connect)
-		wlan_channel = nw_info->ch;
+		wlan_channel = curr_channel;
 
-	wilc_wlan_set_bssid(dev, nw_info->bssid, WILC_STATION_MODE);
+	wilc_wlan_set_bssid(dev, bss->bssid, WILC_STATION_MODE);
 
-	ret = wilc_set_join_req(vif, nw_info->bssid, sme->ssid,
+	ret = wilc_set_join_req(vif, bss->bssid, sme->ssid,
 				sme->ssid_len, sme->ie, sme->ie_len,
 				cfg_connect_result, (void *)priv,
-				security, auth_type,
-				nw_info->ch,
-				nw_info->join_params);
+				security, auth_type, curr_channel, join_params);
 	if (ret) {
 		netdev_err(dev, "wilc_set_join_req(): Error\n");
 		ret = -ENOENT;
 		if (!wfi_drv->p2p_connect)
 			wlan_channel = INVALID_CHANNEL;
 		wilc_wlan_set_bssid(dev, NULL, WILC_STATION_MODE);
-		goto out_error;
+		kfree(join_params);
+		goto out_put_bss;
 	}
+	kfree(join_params);
+	cfg80211_put_bss(wiphy, bss);
 	return 0;
 
+out_put_bss:
+	cfg80211_put_bss(wiphy, bss);
+
 out_error:
 	vif->connecting = false;
 	return ret;
@@ -2096,7 +1840,6 @@ int wilc_init_host_int(struct net_device *net)
 	struct wilc_priv *priv = wdev_priv(net->ieee80211_ptr);
 	struct wilc_vif *vif = netdev_priv(priv->dev);
 
-	timer_setup(&priv->aging_timer, remove_network_from_shadow, 0);
 	timer_setup(&vif->during_ip_timer, clear_during_ip, 0);
 
 	priv->p2p_listen_state = false;
@@ -2120,8 +1863,6 @@ void wilc_deinit_host_int(struct net_device *net)
 	mutex_destroy(&priv->scan_req_lock);
 	ret = wilc_deinit(vif);
 
-	del_timer_sync(&priv->aging_timer);
-	clear_shadow_scan(priv);
 	del_timer_sync(&vif->during_ip_timer);
 
 	if (ret)

drivers/staging/wilc1000/wilc_wfi_netdevice.h

@@ -137,7 +137,6 @@ struct wilc_priv {
 	u64 tx_cookie;
 
 	bool cfg_scanning;
-	u32 rcvd_ch_cnt;
 
 	u8 associated_bss[ETH_ALEN];
 	struct sta_info assoc_stainfo;
@@ -155,8 +154,6 @@ struct wilc_priv {
 	/* mutexes */
 	struct mutex scan_req_lock;
 	bool p2p_listen_state;
-	struct timer_list aging_timer;
-	struct network_info scanned_shadow[MAX_NUM_SCANNED_NETWORKS_SHADOW];
 	int scanned_cnt;
 	struct wilc_p2p_var p2p;