Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 208 insertions, 222 deletions

diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c
index 6396d3318ead..aff9cd763f2b 100644
--- a/drivers/net/wireless/mwifiex/scan.c
+++ b/drivers/net/wireless/mwifiex/scan.c
@@ -125,7 +125,7 @@ mwifiex_is_rsn_oui_present(struct mwifiex_bssdescriptor *bss_desc, u32 cipher)
 					ieee_hdr.element_id == WLAN_EID_RSN))) {
 		iebody = (struct ie_body *)
 			 (((u8 *) bss_desc->bcn_rsn_ie->data) +
-			 RSN_GTK_OUI_OFFSET);
+			  RSN_GTK_OUI_OFFSET);
 		oui = &mwifiex_rsn_oui[cipher][0];
 		ret = mwifiex_search_oui_in_ie(iebody, oui);
 		if (ret)
@@ -148,8 +148,9 @@ mwifiex_is_wpa_oui_present(struct mwifiex_bssdescriptor *bss_desc, u32 cipher)
 	struct ie_body *iebody;
 	u8 ret = MWIFIEX_OUI_NOT_PRESENT;
 
-	if (((bss_desc->bcn_wpa_ie) && ((*(bss_desc->bcn_wpa_ie)).
-				      vend_hdr.element_id == WLAN_EID_WPA))) {
+	if (((bss_desc->bcn_wpa_ie) &&
+	     ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id ==
+	      WLAN_EID_WPA))) {
 		iebody = (struct ie_body *) bss_desc->bcn_wpa_ie->data;
 		oui = &mwifiex_wpa_oui[cipher][0];
 		ret = mwifiex_search_oui_in_ie(iebody, oui);
@@ -163,8 +164,7 @@ mwifiex_is_wpa_oui_present(struct mwifiex_bssdescriptor *bss_desc, u32 cipher)
  * This function compares two SSIDs and checks if they match.
  */
 s32
-mwifiex_ssid_cmp(struct mwifiex_802_11_ssid *ssid1,
-		 struct mwifiex_802_11_ssid *ssid2)
+mwifiex_ssid_cmp(struct cfg80211_ssid *ssid1, struct cfg80211_ssid *ssid2)
 {
 	if (!ssid1 || !ssid2 || (ssid1->ssid_len != ssid2->ssid_len))
 		return -1;
@@ -176,8 +176,8 @@ mwifiex_ssid_cmp(struct mwifiex_802_11_ssid *ssid1,
  * compatible with it.
  */
 static bool
-mwifiex_is_network_compatible_for_wapi(struct mwifiex_private *priv,
-				       struct mwifiex_bssdescriptor *bss_desc)
+mwifiex_is_bss_wapi(struct mwifiex_private *priv,
+		    struct mwifiex_bssdescriptor *bss_desc)
 {
 	if (priv->sec_info.wapi_enabled &&
 	    (bss_desc->bcn_wapi_ie &&
@@ -193,19 +193,17 @@ mwifiex_is_network_compatible_for_wapi(struct mwifiex_private *priv,
  * scanned network is compatible with it.
  */
 static bool
-mwifiex_is_network_compatible_for_no_sec(struct mwifiex_private *priv,
-				       struct mwifiex_bssdescriptor *bss_desc)
+mwifiex_is_bss_no_sec(struct mwifiex_private *priv,
+		      struct mwifiex_bssdescriptor *bss_desc)
 {
-	if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED
-	    && !priv->sec_info.wpa_enabled && !priv->sec_info.wpa2_enabled
-	    && ((!bss_desc->bcn_wpa_ie) ||
+	if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled &&
+	    !priv->sec_info.wpa2_enabled && ((!bss_desc->bcn_wpa_ie) ||
 		((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id !=
-	    WLAN_EID_WPA))
-	    && ((!bss_desc->bcn_rsn_ie) ||
+		 WLAN_EID_WPA)) &&
+	    ((!bss_desc->bcn_rsn_ie) ||
 		((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id !=
-	    WLAN_EID_RSN))
-	    && !priv->sec_info.encryption_mode
-	    && !bss_desc->privacy) {
+		 WLAN_EID_RSN)) &&
+	    !priv->sec_info.encryption_mode && !bss_desc->privacy) {
 		return true;
 	}
 	return false;
@@ -216,12 +214,11 @@ mwifiex_is_network_compatible_for_no_sec(struct mwifiex_private *priv,
  * is compatible with it.
  */
 static bool
-mwifiex_is_network_compatible_for_static_wep(struct mwifiex_private *priv,
-				       struct mwifiex_bssdescriptor *bss_desc)
+mwifiex_is_bss_static_wep(struct mwifiex_private *priv,
+			  struct mwifiex_bssdescriptor *bss_desc)
 {
-	if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED
-	    && !priv->sec_info.wpa_enabled && !priv->sec_info.wpa2_enabled
-	    && bss_desc->privacy) {
+	if (priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled &&
+	    !priv->sec_info.wpa2_enabled && bss_desc->privacy) {
 		return true;
 	}
 	return false;
@@ -232,13 +229,12 @@ mwifiex_is_network_compatible_for_static_wep(struct mwifiex_private *priv,
  * compatible with it.
  */
 static bool
-mwifiex_is_network_compatible_for_wpa(struct mwifiex_private *priv,
-				      struct mwifiex_bssdescriptor *bss_desc)
+mwifiex_is_bss_wpa(struct mwifiex_private *priv,
+		   struct mwifiex_bssdescriptor *bss_desc)
 {
-	if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED
-	    && priv->sec_info.wpa_enabled && !priv->sec_info.wpa2_enabled
-	    && ((bss_desc->bcn_wpa_ie) && ((*(bss_desc->bcn_wpa_ie)).vend_hdr.
-						element_id == WLAN_EID_WPA))
+	if (!priv->sec_info.wep_enabled && priv->sec_info.wpa_enabled &&
+	    !priv->sec_info.wpa2_enabled && ((bss_desc->bcn_wpa_ie) &&
+	    ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id == WLAN_EID_WPA))
 	   /*
 	    * Privacy bit may NOT be set in some APs like
 	    * LinkSys WRT54G && bss_desc->privacy
@@ -253,8 +249,7 @@ mwifiex_is_network_compatible_for_wpa(struct mwifiex_private *priv,
 			(bss_desc->bcn_rsn_ie) ?
 			(*(bss_desc->bcn_rsn_ie)).
 			ieee_hdr.element_id : 0,
-			(priv->sec_info.wep_status ==
-			MWIFIEX_802_11_WEP_ENABLED) ? "e" : "d",
+			(priv->sec_info.wep_enabled) ? "e" : "d",
 			(priv->sec_info.wpa_enabled) ? "e" : "d",
 			(priv->sec_info.wpa2_enabled) ? "e" : "d",
 			priv->sec_info.encryption_mode,
@@ -269,18 +264,18 @@ mwifiex_is_network_compatible_for_wpa(struct mwifiex_private *priv,
  * compatible with it.
  */
 static bool
-mwifiex_is_network_compatible_for_wpa2(struct mwifiex_private *priv,
-				       struct mwifiex_bssdescriptor *bss_desc)
+mwifiex_is_bss_wpa2(struct mwifiex_private *priv,
+		    struct mwifiex_bssdescriptor *bss_desc)
 {
-	if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED
-	   && !priv->sec_info.wpa_enabled && priv->sec_info.wpa2_enabled
-	   && ((bss_desc->bcn_rsn_ie) && ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.
-						element_id == WLAN_EID_RSN))
-	   /*
-	    * Privacy bit may NOT be set in some APs like
-	    * LinkSys WRT54G && bss_desc->privacy
-	    */
-	 ) {
+	if (!priv->sec_info.wep_enabled &&
+	    !priv->sec_info.wpa_enabled &&
+	    priv->sec_info.wpa2_enabled &&
+	    ((bss_desc->bcn_rsn_ie) &&
+	     ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id == WLAN_EID_RSN))) {
+		/*
+		 * Privacy bit may NOT be set in some APs like
+		 * LinkSys WRT54G && bss_desc->privacy
+		 */
 		dev_dbg(priv->adapter->dev, "info: %s: WPA2: "
 			" wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s "
 			"EncMode=%#x privacy=%#x\n", __func__,
@@ -290,8 +285,7 @@ mwifiex_is_network_compatible_for_wpa2(struct mwifiex_private *priv,
 			(bss_desc->bcn_rsn_ie) ?
 			(*(bss_desc->bcn_rsn_ie)).
 			ieee_hdr.element_id : 0,
-			(priv->sec_info.wep_status ==
-			MWIFIEX_802_11_WEP_ENABLED) ? "e" : "d",
+			(priv->sec_info.wep_enabled) ? "e" : "d",
 			(priv->sec_info.wpa_enabled) ? "e" : "d",
 			(priv->sec_info.wpa2_enabled) ? "e" : "d",
 			priv->sec_info.encryption_mode,
@@ -306,17 +300,16 @@ mwifiex_is_network_compatible_for_wpa2(struct mwifiex_private *priv,
  * compatible with it.
  */
 static bool
-mwifiex_is_network_compatible_for_adhoc_aes(struct mwifiex_private *priv,
-				       struct mwifiex_bssdescriptor *bss_desc)
+mwifiex_is_bss_adhoc_aes(struct mwifiex_private *priv,
+			 struct mwifiex_bssdescriptor *bss_desc)
 {
-	if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED
-	    && !priv->sec_info.wpa_enabled && !priv->sec_info.wpa2_enabled
-	    && ((!bss_desc->bcn_wpa_ie) || ((*(bss_desc->bcn_wpa_ie)).vend_hdr.
-		   element_id != WLAN_EID_WPA))
-	    && ((!bss_desc->bcn_rsn_ie) || ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.
-		   element_id != WLAN_EID_RSN))
-	    && !priv->sec_info.encryption_mode
-	    && bss_desc->privacy) {
+	if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled &&
+	    !priv->sec_info.wpa2_enabled &&
+	    ((!bss_desc->bcn_wpa_ie) ||
+	     ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id != WLAN_EID_WPA)) &&
+	    ((!bss_desc->bcn_rsn_ie) ||
+	     ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id != WLAN_EID_RSN)) &&
+	    !priv->sec_info.encryption_mode && bss_desc->privacy) {
 		return true;
 	}
 	return false;
@@ -327,17 +320,16 @@ mwifiex_is_network_compatible_for_adhoc_aes(struct mwifiex_private *priv,
  * is compatible with it.
  */
 static bool
-mwifiex_is_network_compatible_for_dynamic_wep(struct mwifiex_private *priv,
-				       struct mwifiex_bssdescriptor *bss_desc)
+mwifiex_is_bss_dynamic_wep(struct mwifiex_private *priv,
+			   struct mwifiex_bssdescriptor *bss_desc)
 {
-	if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED
-	    && !priv->sec_info.wpa_enabled && !priv->sec_info.wpa2_enabled
-	    && ((!bss_desc->bcn_wpa_ie) || ((*(bss_desc->bcn_wpa_ie)).vend_hdr.
-		   element_id != WLAN_EID_WPA))
-	    && ((!bss_desc->bcn_rsn_ie) || ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.
-		   element_id != WLAN_EID_RSN))
-	    && priv->sec_info.encryption_mode
-	    && bss_desc->privacy) {
+	if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled &&
+	    !priv->sec_info.wpa2_enabled &&
+	    ((!bss_desc->bcn_wpa_ie) ||
+	     ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id != WLAN_EID_WPA)) &&
+	    ((!bss_desc->bcn_rsn_ie) ||
+	     ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id != WLAN_EID_RSN)) &&
+	    priv->sec_info.encryption_mode && bss_desc->privacy) {
 		dev_dbg(priv->adapter->dev, "info: %s: dynamic "
 			"WEP: wpa_ie=%#x wpa2_ie=%#x "
 			"EncMode=%#x privacy=%#x\n",
@@ -382,8 +374,9 @@ mwifiex_is_network_compatible(struct mwifiex_private *priv,
 	bss_desc->disable_11n = false;
 
 	/* Don't check for compatibility if roaming */
-	if (priv->media_connected && (priv->bss_mode == NL80211_IFTYPE_STATION)
-	    && (bss_desc->bss_mode == NL80211_IFTYPE_STATION))
+	if (priv->media_connected &&
+	    (priv->bss_mode == NL80211_IFTYPE_STATION) &&
+	    (bss_desc->bss_mode == NL80211_IFTYPE_STATION))
 		return 0;
 
 	if (priv->wps.session_enable) {
@@ -392,32 +385,30 @@ mwifiex_is_network_compatible(struct mwifiex_private *priv,
 		return 0;
 	}
 
-	if (mwifiex_is_network_compatible_for_wapi(priv, bss_desc)) {
+	if (mwifiex_is_bss_wapi(priv, bss_desc)) {
 		dev_dbg(adapter->dev, "info: return success for WAPI AP\n");
 		return 0;
 	}
 
 	if (bss_desc->bss_mode == mode) {
-		if (mwifiex_is_network_compatible_for_no_sec(priv, bss_desc)) {
+		if (mwifiex_is_bss_no_sec(priv, bss_desc)) {
 			/* No security */
 			return 0;
-		} else if (mwifiex_is_network_compatible_for_static_wep(priv,
-								bss_desc)) {
+		} else if (mwifiex_is_bss_static_wep(priv, bss_desc)) {
 			/* Static WEP enabled */
 			dev_dbg(adapter->dev, "info: Disable 11n in WEP mode.\n");
 			bss_desc->disable_11n = true;
 			return 0;
-		} else if (mwifiex_is_network_compatible_for_wpa(priv,
-								 bss_desc)) {
+		} else if (mwifiex_is_bss_wpa(priv, bss_desc)) {
 			/* WPA enabled */
-			if (((priv->adapter->config_bands & BAND_GN
-			      || priv->adapter->config_bands & BAND_AN)
-			      && bss_desc->bcn_ht_cap)
-			      && !mwifiex_is_wpa_oui_present(bss_desc,
-					CIPHER_SUITE_CCMP)) {
-
-				if (mwifiex_is_wpa_oui_present(bss_desc,
-					    CIPHER_SUITE_TKIP)) {
+			if (((priv->adapter->config_bands & BAND_GN ||
+			      priv->adapter->config_bands & BAND_AN) &&
+			     bss_desc->bcn_ht_cap) &&
+			    !mwifiex_is_wpa_oui_present(bss_desc,
+							 CIPHER_SUITE_CCMP)) {
+
+				if (mwifiex_is_wpa_oui_present
+						(bss_desc, CIPHER_SUITE_TKIP)) {
 					dev_dbg(adapter->dev,
 						"info: Disable 11n if AES "
 						"is not supported by AP\n");
@@ -427,17 +418,16 @@ mwifiex_is_network_compatible(struct mwifiex_private *priv,
 				}
 			}
 			return 0;
-		} else if (mwifiex_is_network_compatible_for_wpa2(priv,
-							bss_desc)) {
+		} else if (mwifiex_is_bss_wpa2(priv, bss_desc)) {
 			/* WPA2 enabled */
-			if (((priv->adapter->config_bands & BAND_GN
-			      || priv->adapter->config_bands & BAND_AN)
-			      && bss_desc->bcn_ht_cap)
-			      && !mwifiex_is_rsn_oui_present(bss_desc,
-					CIPHER_SUITE_CCMP)) {
-
-				if (mwifiex_is_rsn_oui_present(bss_desc,
-					    CIPHER_SUITE_TKIP)) {
+			if (((priv->adapter->config_bands & BAND_GN ||
+			      priv->adapter->config_bands & BAND_AN) &&
+			     bss_desc->bcn_ht_cap) &&
+			    !mwifiex_is_rsn_oui_present(bss_desc,
+							CIPHER_SUITE_CCMP)) {
+
+				if (mwifiex_is_rsn_oui_present
+						(bss_desc, CIPHER_SUITE_TKIP)) {
 					dev_dbg(adapter->dev,
 						"info: Disable 11n if AES "
 						"is not supported by AP\n");
@@ -447,32 +437,26 @@ mwifiex_is_network_compatible(struct mwifiex_private *priv,
 				}
 			}
 			return 0;
-		} else if (mwifiex_is_network_compatible_for_adhoc_aes(priv,
-								bss_desc)) {
+		} else if (mwifiex_is_bss_adhoc_aes(priv, bss_desc)) {
 			/* Ad-hoc AES enabled */
 			return 0;
-		} else if (mwifiex_is_network_compatible_for_dynamic_wep(priv,
-							bss_desc)) {
+		} else if (mwifiex_is_bss_dynamic_wep(priv, bss_desc)) {
 			/* Dynamic WEP enabled */
 			return 0;
 		}
 
 		/* Security doesn't match */
-		dev_dbg(adapter->dev, "info: %s: failed: "
-		       "wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s EncMode"
-		       "=%#x privacy=%#x\n",
-		       __func__,
-		       (bss_desc->bcn_wpa_ie) ?
-		       (*(bss_desc->bcn_wpa_ie)).vend_hdr.
-		       element_id : 0,
-		       (bss_desc->bcn_rsn_ie) ?
-		       (*(bss_desc->bcn_rsn_ie)).ieee_hdr.
-		       element_id : 0,
-		       (priv->sec_info.wep_status ==
-				MWIFIEX_802_11_WEP_ENABLED) ? "e" : "d",
-		       (priv->sec_info.wpa_enabled) ? "e" : "d",
-		       (priv->sec_info.wpa2_enabled) ? "e" : "d",
-		       priv->sec_info.encryption_mode, bss_desc->privacy);
+		dev_dbg(adapter->dev,
+			"info: %s: failed: wpa_ie=%#x wpa2_ie=%#x WEP=%s "
+			"WPA=%s WPA2=%s EncMode=%#x privacy=%#x\n", __func__,
+			(bss_desc->bcn_wpa_ie) ?
+			(*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id : 0,
+			(bss_desc->bcn_rsn_ie) ?
+			(*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id : 0,
+			(priv->sec_info.wep_enabled) ? "e" : "d",
+			(priv->sec_info.wpa_enabled) ? "e" : "d",
+			(priv->sec_info.wpa2_enabled) ? "e" : "d",
+			priv->sec_info.encryption_mode, bss_desc->privacy);
 		return -1;
 	}
 
@@ -489,11 +473,11 @@ mwifiex_is_network_compatible(struct mwifiex_private *priv,
  */
 static void
 mwifiex_scan_create_channel_list(struct mwifiex_private *priv,
-				const struct mwifiex_user_scan_cfg
-				*user_scan_in,
-				struct mwifiex_chan_scan_param_set
-				*scan_chan_list,
-				u8 filtered_scan)
+				 const struct mwifiex_user_scan_cfg
+							*user_scan_in,
+				 struct mwifiex_chan_scan_param_set
+							*scan_chan_list,
+				 u8 filtered_scan)
 {
 	enum ieee80211_band band;
 	struct ieee80211_supported_band *sband;
@@ -515,7 +499,7 @@ mwifiex_scan_create_channel_list(struct mwifiex_private *priv,
 			scan_chan_list[chan_idx].radio_type = band;
 
 			if (user_scan_in &&
-				user_scan_in->chan_list[0].scan_time)
+			    user_scan_in->chan_list[0].scan_time)
 				scan_chan_list[chan_idx].max_scan_time =
 					cpu_to_le16((u16) user_scan_in->
 					chan_list[0].scan_time);
@@ -604,19 +588,19 @@ mwifiex_scan_channel_list(struct mwifiex_private *priv,
 		 *   - done_early is set (controlling individual scanning of
 		 *     1,6,11)
 		 */
-		while (tlv_idx < max_chan_per_scan
-		       && tmp_chan_list->chan_number && !done_early) {
+		while (tlv_idx < max_chan_per_scan &&
+		       tmp_chan_list->chan_number && !done_early) {
 
 			dev_dbg(priv->adapter->dev,
 				"info: Scan: Chan(%3d), Radio(%d),"
 				" Mode(%d, %d), Dur(%d)\n",
-			       tmp_chan_list->chan_number,
-			       tmp_chan_list->radio_type,
-			       tmp_chan_list->chan_scan_mode_bitmap
-			       & MWIFIEX_PASSIVE_SCAN,
-			       (tmp_chan_list->chan_scan_mode_bitmap
-			       & MWIFIEX_DISABLE_CHAN_FILT) >> 1,
-			       le16_to_cpu(tmp_chan_list->max_scan_time));
+				tmp_chan_list->chan_number,
+				tmp_chan_list->radio_type,
+				tmp_chan_list->chan_scan_mode_bitmap
+				& MWIFIEX_PASSIVE_SCAN,
+				(tmp_chan_list->chan_scan_mode_bitmap
+				 & MWIFIEX_DISABLE_CHAN_FILT) >> 1,
+				le16_to_cpu(tmp_chan_list->max_scan_time));
 
 			/* Copy the current channel TLV to the command being
 			   prepared */
@@ -658,9 +642,10 @@ mwifiex_scan_channel_list(struct mwifiex_private *priv,
 			/* Stop the loop if the *current* channel is in the
 			   1,6,11 set and we are not filtering on a BSSID
 			   or SSID. */
-			if (!filtered_scan && (tmp_chan_list->chan_number == 1
-				|| tmp_chan_list->chan_number == 6
-				|| tmp_chan_list->chan_number == 11))
+			if (!filtered_scan &&
+			    (tmp_chan_list->chan_number == 1 ||
+			     tmp_chan_list->chan_number == 6 ||
+			     tmp_chan_list->chan_number == 11))
 				done_early = true;
 
 			/* Increment the tmp pointer to the next channel to
@@ -670,9 +655,10 @@ mwifiex_scan_channel_list(struct mwifiex_private *priv,
 			/* Stop the loop if the *next* channel is in the 1,6,11
 			   set.  This will cause it to be the only channel
 			   scanned on the next interation */
-			if (!filtered_scan && (tmp_chan_list->chan_number == 1
-				|| tmp_chan_list->chan_number == 6
-				|| tmp_chan_list->chan_number == 11))
+			if (!filtered_scan &&
+			    (tmp_chan_list->chan_number == 1 ||
+			     tmp_chan_list->chan_number == 6 ||
+			     tmp_chan_list->chan_number == 11))
 				done_early = true;
 		}
 
@@ -724,15 +710,13 @@ mwifiex_scan_channel_list(struct mwifiex_private *priv,
  * If the number of probes is not set, adapter default setting is used.
  */
 static void
-mwifiex_scan_setup_scan_config(struct mwifiex_private *priv,
-			       const struct mwifiex_user_scan_cfg *user_scan_in,
-			       struct mwifiex_scan_cmd_config *scan_cfg_out,
-			       struct mwifiex_ie_types_chan_list_param_set
-			       **chan_list_out,
-			       struct mwifiex_chan_scan_param_set
-			       *scan_chan_list,
-			       u8 *max_chan_per_scan, u8 *filtered_scan,
-			       u8 *scan_current_only)
+mwifiex_config_scan(struct mwifiex_private *priv,
+		    const struct mwifiex_user_scan_cfg *user_scan_in,
+		    struct mwifiex_scan_cmd_config *scan_cfg_out,
+		    struct mwifiex_ie_types_chan_list_param_set **chan_list_out,
+		    struct mwifiex_chan_scan_param_set *scan_chan_list,
+		    u8 *max_chan_per_scan, u8 *filtered_scan,
+		    u8 *scan_current_only)
 {
 	struct mwifiex_adapter *adapter = priv->adapter;
 	struct mwifiex_ie_types_num_probes *num_probes_tlv;
@@ -747,7 +731,7 @@ mwifiex_scan_setup_scan_config(struct mwifiex_private *priv,
 	u16 scan_dur;
 	u8 channel;
 	u8 radio_type;
-	u32 ssid_idx;
+	int i;
 	u8 ssid_filter;
 	u8 rates[MWIFIEX_SUPPORTED_RATES];
 	u32 rates_size;
@@ -802,14 +786,8 @@ mwifiex_scan_setup_scan_config(struct mwifiex_private *priv,
 		       user_scan_in->specific_bssid,
 		       sizeof(scan_cfg_out->specific_bssid));
 
-		for (ssid_idx = 0;
-		     ((ssid_idx < ARRAY_SIZE(user_scan_in->ssid_list))
-		      && (*user_scan_in->ssid_list[ssid_idx].ssid
-			  || user_scan_in->ssid_list[ssid_idx].max_len));
-		     ssid_idx++) {
-
-			ssid_len = strlen(user_scan_in->ssid_list[ssid_idx].
-					  ssid) + 1;
+		for (i = 0; i < user_scan_in->num_ssids; i++) {
+			ssid_len = user_scan_in->ssid_list[i].ssid_len;
 
 			wildcard_ssid_tlv =
 				(struct mwifiex_ie_types_wildcard_ssid_params *)
@@ -820,19 +798,26 @@ mwifiex_scan_setup_scan_config(struct mwifiex_private *priv,
 				(u16) (ssid_len + sizeof(wildcard_ssid_tlv->
 							 max_ssid_length)));
 
-			/* max_ssid_length = 0 tells firmware to perform
-			   specific scan for the SSID filled */
-			wildcard_ssid_tlv->max_ssid_length = 0;
+			/*
+			 * max_ssid_length = 0 tells firmware to perform
+			 * specific scan for the SSID filled, whereas
+			 * max_ssid_length = IEEE80211_MAX_SSID_LEN is for
+			 * wildcard scan.
+			 */
+			if (ssid_len)
+				wildcard_ssid_tlv->max_ssid_length = 0;
+			else
+				wildcard_ssid_tlv->max_ssid_length =
+							IEEE80211_MAX_SSID_LEN;
 
 			memcpy(wildcard_ssid_tlv->ssid,
-			       user_scan_in->ssid_list[ssid_idx].ssid,
-			       ssid_len);
+			       user_scan_in->ssid_list[i].ssid, ssid_len);
 
 			tlv_pos += (sizeof(wildcard_ssid_tlv->header)
 				+ le16_to_cpu(wildcard_ssid_tlv->header.len));
 
-			dev_dbg(adapter->dev, "info: scan: ssid_list[%d]: %s, %d\n",
-				ssid_idx, wildcard_ssid_tlv->ssid,
+			dev_dbg(adapter->dev, "info: scan: ssid[%d]: %s, %d\n",
+				i, wildcard_ssid_tlv->ssid,
 				wildcard_ssid_tlv->max_ssid_length);
 
 			/* Empty wildcard ssid with a maxlen will match many or
@@ -841,7 +826,6 @@ mwifiex_scan_setup_scan_config(struct mwifiex_private *priv,
 			   filtered. */
 			if (!ssid_len && wildcard_ssid_tlv->max_ssid_length)
 				ssid_filter = false;
-
 		}
 
 		/*
@@ -850,9 +834,9 @@ mwifiex_scan_setup_scan_config(struct mwifiex_private *priv,
 		 *  truncate scan results.  That is not an issue with an SSID
 		 *  or BSSID filter applied to the scan results in the firmware.
 		 */
-		if ((ssid_idx && ssid_filter)
-		    || memcmp(scan_cfg_out->specific_bssid, &zero_mac,
-			      sizeof(zero_mac)))
+		if ((i && ssid_filter) ||
+		    memcmp(scan_cfg_out->specific_bssid, &zero_mac,
+			   sizeof(zero_mac)))
 			*filtered_scan = true;
 	} else {
 		scan_cfg_out->bss_mode = (u8) adapter->scan_mode;
@@ -873,7 +857,7 @@ mwifiex_scan_setup_scan_config(struct mwifiex_private *priv,
 	if (num_probes) {
 
 		dev_dbg(adapter->dev, "info: scan: num_probes = %d\n",
-						num_probes);
+			num_probes);
 
 		num_probes_tlv = (struct mwifiex_ie_types_num_probes *) tlv_pos;
 		num_probes_tlv->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES);
@@ -899,9 +883,9 @@ mwifiex_scan_setup_scan_config(struct mwifiex_private *priv,
 
 	dev_dbg(adapter->dev, "info: SCAN_CMD: Rates size = %d\n", rates_size);
 
-	if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info)
-	    && (priv->adapter->config_bands & BAND_GN
-		|| priv->adapter->config_bands & BAND_AN)) {
+	if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
+	    (priv->adapter->config_bands & BAND_GN ||
+	     priv->adapter->config_bands & BAND_AN)) {
 		ht_cap = (struct mwifiex_ie_types_htcap *) tlv_pos;
 		memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
 		ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
@@ -930,8 +914,8 @@ mwifiex_scan_setup_scan_config(struct mwifiex_private *priv,
 		dev_dbg(adapter->dev, "info: Scan: Using supplied channel list\n");
 
 		for (chan_idx = 0;
-		     chan_idx < MWIFIEX_USER_SCAN_CHAN_MAX
-		     && user_scan_in->chan_list[chan_idx].chan_number;
+		     chan_idx < MWIFIEX_USER_SCAN_CHAN_MAX &&
+		     user_scan_in->chan_list[chan_idx].chan_number;
 		     chan_idx++) {
 
 			channel = user_scan_in->chan_list[chan_idx].chan_number;
@@ -971,9 +955,9 @@ mwifiex_scan_setup_scan_config(struct mwifiex_private *priv,
 		}
 
 		/* Check if we are only scanning the current channel */
-		if ((chan_idx == 1)
-		    && (user_scan_in->chan_list[0].chan_number
-			== priv->curr_bss_params.bss_descriptor.channel)) {
+		if ((chan_idx == 1) &&
+		    (user_scan_in->chan_list[0].chan_number ==
+		     priv->curr_bss_params.bss_descriptor.channel)) {
 			*scan_current_only = true;
 			dev_dbg(adapter->dev,
 				"info: Scan: Scanning current channel only\n");
@@ -981,7 +965,7 @@ mwifiex_scan_setup_scan_config(struct mwifiex_private *priv,
 
 	} else {
 		dev_dbg(adapter->dev,
-				"info: Scan: Creating full region channel list\n");
+			"info: Scan: Creating full region channel list\n");
 		mwifiex_scan_create_channel_list(priv, user_scan_in,
 						 scan_chan_list,
 						 *filtered_scan);
@@ -1013,7 +997,7 @@ mwifiex_ret_802_11_scan_get_tlv_ptrs(struct mwifiex_adapter *adapter,
 	*tlv_data = NULL;
 
 	dev_dbg(adapter->dev, "info: SCAN_RESP: tlv_buf_size = %d\n",
-						tlv_buf_size);
+		tlv_buf_size);
 
 	while (tlv_buf_left >= sizeof(struct mwifiex_ie_types_header)) {
 
@@ -1110,8 +1094,9 @@ mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter,
 			bss_entry->ssid.ssid_len = element_len;
 			memcpy(bss_entry->ssid.ssid, (current_ptr + 2),
 			       element_len);
-			dev_dbg(adapter->dev, "info: InterpretIE: ssid: "
-					      "%-32s\n", bss_entry->ssid.ssid);
+			dev_dbg(adapter->dev,
+				"info: InterpretIE: ssid: %-32s\n",
+				bss_entry->ssid.ssid);
 			break;
 
 		case WLAN_EID_SUPP_RATES:
@@ -1199,13 +1184,13 @@ mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter,
 				bss_entry->bcn_wpa_ie =
 					(struct ieee_types_vendor_specific *)
 					current_ptr;
-				bss_entry->wpa_offset = (u16) (current_ptr -
-							bss_entry->beacon_buf);
+				bss_entry->wpa_offset = (u16)
+					(current_ptr - bss_entry->beacon_buf);
 			} else if (!memcmp(vendor_ie->vend_hdr.oui, wmm_oui,
 				    sizeof(wmm_oui))) {
 				if (total_ie_len ==
-				    sizeof(struct ieee_types_wmm_parameter)
-				    || total_ie_len ==
+				    sizeof(struct ieee_types_wmm_parameter) ||
+				    total_ie_len ==
 				    sizeof(struct ieee_types_wmm_info))
 					/*
 					 * Only accept and copy the WMM IE if
@@ -1326,14 +1311,14 @@ static int mwifiex_scan_networks(struct mwifiex_private *priv,
 	}
 
 	scan_cfg_out = kzalloc(sizeof(union mwifiex_scan_cmd_config_tlv),
-					GFP_KERNEL);
+								GFP_KERNEL);
 	if (!scan_cfg_out) {
 		dev_err(adapter->dev, "failed to alloc scan_cfg_out\n");
 		return -ENOMEM;
 	}
 
 	buf_size = sizeof(struct mwifiex_chan_scan_param_set) *
-			MWIFIEX_USER_SCAN_CHAN_MAX;
+						MWIFIEX_USER_SCAN_CHAN_MAX;
 	scan_chan_list = kzalloc(buf_size, GFP_KERNEL);
 	if (!scan_chan_list) {
 		dev_err(adapter->dev, "failed to alloc scan_chan_list\n");
@@ -1341,10 +1326,9 @@ static int mwifiex_scan_networks(struct mwifiex_private *priv,
 		return -ENOMEM;
 	}
 
-	mwifiex_scan_setup_scan_config(priv, user_scan_in,
-				       &scan_cfg_out->config, &chan_list_out,
-				       scan_chan_list, &max_chan_per_scan,
-				       &filtered_scan, &scan_current_chan_only);
+	mwifiex_config_scan(priv, user_scan_in, &scan_cfg_out->config,
+			    &chan_list_out, scan_chan_list, &max_chan_per_scan,
+			    &filtered_scan, &scan_current_chan_only);
 
 	ret = mwifiex_scan_channel_list(priv, max_chan_per_scan, filtered_scan,
 					&scan_cfg_out->config, chan_list_out,
@@ -1355,10 +1339,10 @@ static int mwifiex_scan_networks(struct mwifiex_private *priv,
 		spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
 		if (!list_empty(&adapter->scan_pending_q)) {
 			cmd_node = list_first_entry(&adapter->scan_pending_q,
-						struct cmd_ctrl_node, list);
+						    struct cmd_ctrl_node, list);
 			list_del(&cmd_node->list);
 			spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
-									flags);
+					       flags);
 			adapter->cmd_queued = cmd_node;
 			mwifiex_insert_cmd_to_pending_q(adapter, cmd_node,
 							true);
@@ -1444,8 +1428,8 @@ int mwifiex_check_network_compatibility(struct mwifiex_private *priv,
 	if (!bss_desc)
 		return -1;
 
-	if ((mwifiex_get_cfp_by_band_and_channel_from_cfg80211(priv,
-			(u8) bss_desc->bss_band, (u16) bss_desc->channel))) {
+	if ((mwifiex_get_cfp(priv, (u8) bss_desc->bss_band,
+			     (u16) bss_desc->channel, 0))) {
 		switch (priv->bss_mode) {
 		case NL80211_IFTYPE_STATION:
 		case NL80211_IFTYPE_ADHOC:
@@ -1524,7 +1508,7 @@ mwifiex_update_curr_bss_params(struct mwifiex_private *priv, u8 *bssid,
 
 	/* Make a copy of current BSSID descriptor */
 	memcpy(&priv->curr_bss_params.bss_descriptor, bss_desc,
-		sizeof(priv->curr_bss_params.bss_descriptor));
+	       sizeof(priv->curr_bss_params.bss_descriptor));
 	mwifiex_save_curr_bcn(priv);
 	spin_unlock_irqrestore(&priv->curr_bcn_buf_lock, flags);
 
@@ -1575,7 +1559,7 @@ int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
 	struct cfg80211_bss *bss;
 
 	is_bgscan_resp = (le16_to_cpu(resp->command)
-		== HostCmd_CMD_802_11_BG_SCAN_QUERY);
+			  == HostCmd_CMD_802_11_BG_SCAN_QUERY);
 	if (is_bgscan_resp)
 		scan_rsp = &resp->params.bg_scan_query_resp.scan_resp;
 	else
@@ -1584,20 +1568,20 @@ int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
 
 	if (scan_rsp->number_of_sets > MWIFIEX_MAX_AP) {
 		dev_err(adapter->dev, "SCAN_RESP: too many AP returned (%d)\n",
-		       scan_rsp->number_of_sets);
+			scan_rsp->number_of_sets);
 		ret = -1;
 		goto done;
 	}
 
 	bytes_left = le16_to_cpu(scan_rsp->bss_descript_size);
 	dev_dbg(adapter->dev, "info: SCAN_RESP: bss_descript_size %d\n",
-						bytes_left);
+		bytes_left);
 
 	scan_resp_size = le16_to_cpu(resp->size);
 
 	dev_dbg(adapter->dev,
 		"info: SCAN_RESP: returned %d APs before parsing\n",
-	       scan_rsp->number_of_sets);
+		scan_rsp->number_of_sets);
 
 	bss_info = scan_rsp->bss_desc_and_tlv_buffer;
 
@@ -1635,7 +1619,7 @@ int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
 		s32 rssi;
 		const u8 *ie_buf;
 		size_t ie_len;
-		int channel = -1;
+		u16 channel = 0;
 		u64 network_tsf = 0;
 		u16 beacon_size = 0;
 		u32 curr_bcn_bytes;
@@ -1673,7 +1657,8 @@ int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
 		 *   and capability information
 		 */
 		if (curr_bcn_bytes < sizeof(struct mwifiex_bcn_param)) {
-			dev_err(adapter->dev, "InterpretIE: not enough bytes left\n");
+			dev_err(adapter->dev,
+				"InterpretIE: not enough bytes left\n");
 			continue;
 		}
 		bcn_param = (struct mwifiex_bcn_param *)current_ptr;
@@ -1683,20 +1668,20 @@ int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
 		memcpy(bssid, bcn_param->bssid, ETH_ALEN);
 
 		rssi = (s32) (bcn_param->rssi);
-		dev_dbg(adapter->dev, "info: InterpretIE: RSSI=%02X\n",
-					rssi);
+		dev_dbg(adapter->dev, "info: InterpretIE: RSSI=%02X\n", rssi);
 
 		beacon_period = le16_to_cpu(bcn_param->beacon_period);
 
 		cap_info_bitmap = le16_to_cpu(bcn_param->cap_info_bitmap);
 		dev_dbg(adapter->dev, "info: InterpretIE: capabilities=0x%X\n",
-				cap_info_bitmap);
+			cap_info_bitmap);
 
 		/* Rest of the current buffer are IE's */
 		ie_buf = current_ptr;
 		ie_len = curr_bcn_bytes;
-		dev_dbg(adapter->dev, "info: InterpretIE: IELength for this AP"
-				      " = %d\n", curr_bcn_bytes);
+		dev_dbg(adapter->dev,
+			"info: InterpretIE: IELength for this AP = %d\n",
+			curr_bcn_bytes);
 
 		while (curr_bcn_bytes >= sizeof(struct ieee_types_header)) {
 			u8 element_id, element_len;
@@ -1705,8 +1690,8 @@ int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
 			element_len = *(current_ptr + 1);
 			if (curr_bcn_bytes < element_len +
 					sizeof(struct ieee_types_header)) {
-				dev_err(priv->adapter->dev, "%s: in processing"
-					" IE, bytes left < IE length\n",
+				dev_err(priv->adapter->dev,
+					"%s: bytes left < IE length\n",
 					__func__);
 				goto done;
 			}
@@ -1730,10 +1715,10 @@ int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
 		 */
 		if (tsf_tlv)
 			memcpy(&network_tsf,
-					&tsf_tlv->tsf_data[idx * TSF_DATA_SIZE],
-					sizeof(network_tsf));
+			       &tsf_tlv->tsf_data[idx * TSF_DATA_SIZE],
+			       sizeof(network_tsf));
 
-		if (channel != -1) {
+		if (channel) {
 			struct ieee80211_channel *chan;
 			u8 band;
 
@@ -1746,8 +1731,7 @@ int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
 						& (BIT(0) | BIT(1)));
 			}
 
-			cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211(
-						priv, (u8)band, (u16)channel);
+			cfp = mwifiex_get_cfp(priv, band, channel, 0);
 
 			freq = cfp ? cfp->freq : 0;
 
@@ -1761,13 +1745,15 @@ int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
 				*(u8 *)bss->priv = band;
 				cfg80211_put_bss(bss);
 
-				if (priv->media_connected && !memcmp(bssid,
-					priv->curr_bss_params.bss_descriptor
-						     .mac_address, ETH_ALEN))
-					mwifiex_update_curr_bss_params(priv,
-							bssid, rssi, ie_buf,
-							ie_len, beacon_period,
-							cap_info_bitmap, band);
+				if (priv->media_connected &&
+				    !memcmp(bssid,
+					    priv->curr_bss_params.bss_descriptor
+					    .mac_address, ETH_ALEN))
+					mwifiex_update_curr_bss_params
+							(priv, bssid, rssi,
+							 ie_buf, ie_len,
+							 beacon_period,
+							 cap_info_bitmap, band);
 			}
 		} else {
 			dev_dbg(adapter->dev, "missing BSS channel IE\n");
@@ -1794,8 +1780,8 @@ int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
 		}
 
 		if (priv->user_scan_cfg) {
-			dev_dbg(priv->adapter->dev, "info: %s: sending scan "
-							"results\n", __func__);
+			dev_dbg(priv->adapter->dev,
+				"info: %s: sending scan results\n", __func__);
 			cfg80211_scan_done(priv->scan_request, 0);
 			priv->scan_request = NULL;
 			kfree(priv->user_scan_cfg);
@@ -1860,7 +1846,7 @@ mwifiex_queue_scan_cmd(struct mwifiex_private *priv,
  * firmware, filtered on a specific SSID.
  */
 static int mwifiex_scan_specific_ssid(struct mwifiex_private *priv,
-				      struct mwifiex_802_11_ssid *req_ssid)
+				      struct cfg80211_ssid *req_ssid)
 {
 	struct mwifiex_adapter *adapter = priv->adapter;
 	int ret = 0;
@@ -1886,8 +1872,8 @@ static int mwifiex_scan_specific_ssid(struct mwifiex_private *priv,
 		return -ENOMEM;
 	}
 
-	memcpy(scan_cfg->ssid_list[0].ssid, req_ssid->ssid,
-	       req_ssid->ssid_len);
+	scan_cfg->ssid_list = req_ssid;
+	scan_cfg->num_ssids = 1;
 
 	ret = mwifiex_scan_networks(priv, scan_cfg);
 
@@ -1905,13 +1891,13 @@ static int mwifiex_scan_specific_ssid(struct mwifiex_private *priv,
  * scan, depending upon whether an SSID is provided or not.
  */
 int mwifiex_request_scan(struct mwifiex_private *priv,
-			 struct mwifiex_802_11_ssid *req_ssid)
+			 struct cfg80211_ssid *req_ssid)
 {
 	int ret;
 
 	if (down_interruptible(&priv->async_sem)) {
 		dev_err(priv->adapter->dev, "%s: acquire semaphore\n",
-						__func__);
+			__func__);
 		return -1;
 	}
 	priv->scan_pending_on_block = true;
@@ -1996,21 +1982,21 @@ mwifiex_save_curr_bcn(struct mwifiex_private *priv)
 
 	/* allocate beacon buffer at 1st time; or if it's size has changed */
 	if (!priv->curr_bcn_buf ||
-			priv->curr_bcn_size != curr_bss->beacon_buf_size) {
+	    priv->curr_bcn_size != curr_bss->beacon_buf_size) {
 		priv->curr_bcn_size = curr_bss->beacon_buf_size;
 
 		kfree(priv->curr_bcn_buf);
 		priv->curr_bcn_buf = kmalloc(curr_bss->beacon_buf_size,
-						GFP_KERNEL);
+					     GFP_ATOMIC);
 		if (!priv->curr_bcn_buf) {
 			dev_err(priv->adapter->dev,
-					"failed to alloc curr_bcn_buf\n");
+				"failed to alloc curr_bcn_buf\n");
 			return;
 		}
 	}
 
 	memcpy(priv->curr_bcn_buf, curr_bss->beacon_buf,
-		curr_bss->beacon_buf_size);
+	       curr_bss->beacon_buf_size);
 	dev_dbg(priv->adapter->dev, "info: current beacon saved %d\n",
 		priv->curr_bcn_size);