---

yaml
---
r: 265508
b: refs/heads/master
c: 7c6fa2a
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9af73cf7f356801e6e5837eb338d197de5c8f37c
+refs/heads/master: 7c6fa2a843c5ac0f8e3e4bf679cee9c93d5e3437

trunk/drivers/net/wireless/mwifiex/cfg80211.c

@@ -792,139 +792,6 @@ static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 	return 0;
 }
 
-/*
- * This function informs the CFG802.11 subsystem of a new BSS connection.
- *
- * The following information are sent to the CFG802.11 subsystem
- * to register the new BSS connection. If we do not register the new BSS,
- * a kernel panic will result.
- *      - MAC address
- *      - Capabilities
- *      - Beacon period
- *      - RSSI value
- *      - Channel
- *      - Supported rates IE
- *      - Extended capabilities IE
- *      - DS parameter set IE
- *      - HT Capability IE
- *      - Vendor Specific IE (221)
- *      - WPA IE
- *      - RSN IE
- */
-static int mwifiex_inform_bss_from_scan_result(struct mwifiex_private *priv,
-					       struct mwifiex_802_11_ssid *ssid)
-{
-	struct mwifiex_bssdescriptor *scan_table;
-	int i, j;
-	struct ieee80211_channel *chan;
-	u8 *ie, *ie_buf;
-	u32 ie_len;
-	u8 *beacon;
-	int beacon_size;
-	u8 element_id, element_len;
-
-#define MAX_IE_BUF	2048
-	ie_buf = kzalloc(MAX_IE_BUF, GFP_KERNEL);
-	if (!ie_buf) {
-		dev_err(priv->adapter->dev, "%s: failed to alloc ie_buf\n",
-						__func__);
-		return -ENOMEM;
-	}
-
-	scan_table = priv->adapter->scan_table;
-	for (i = 0; i < priv->adapter->num_in_scan_table; i++) {
-		if (ssid) {
-			/* Inform specific BSS only */
-			if (memcmp(ssid->ssid, scan_table[i].ssid.ssid,
-					   ssid->ssid_len))
-				continue;
-		}
-		memset(ie_buf, 0, MAX_IE_BUF);
-		ie_buf[0] = WLAN_EID_SSID;
-		ie_buf[1] = scan_table[i].ssid.ssid_len;
-		memcpy(&ie_buf[sizeof(struct ieee_types_header)],
-		       scan_table[i].ssid.ssid, ie_buf[1]);
-
-		ie = ie_buf + ie_buf[1] + sizeof(struct ieee_types_header);
-		ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
-
-		ie[0] = WLAN_EID_SUPP_RATES;
-
-		for (j = 0; j < sizeof(scan_table[i].supported_rates); j++) {
-			if (!scan_table[i].supported_rates[j])
-				break;
-			else
-				ie[j + sizeof(struct ieee_types_header)] =
-					scan_table[i].supported_rates[j];
-		}
-
-		ie[1] = j;
-		ie_len += ie[1] + sizeof(struct ieee_types_header);
-
-		beacon = scan_table[i].beacon_buf;
-		beacon_size = scan_table[i].beacon_buf_size;
-
-		/* Skip time stamp, beacon interval and capability */
-
-		if (beacon) {
-			beacon += sizeof(scan_table[i].beacon_period)
-				+ sizeof(scan_table[i].time_stamp) +
-				+sizeof(scan_table[i].cap_info_bitmap);
-
-			beacon_size -= sizeof(scan_table[i].beacon_period)
-				+ sizeof(scan_table[i].time_stamp)
-				+ sizeof(scan_table[i].cap_info_bitmap);
-		}
-
-		while (beacon_size >= sizeof(struct ieee_types_header)) {
-			ie = ie_buf + ie_len;
-			element_id = *beacon;
-			element_len = *(beacon + 1);
-			if (beacon_size < (int) element_len +
-			    sizeof(struct ieee_types_header)) {
-				dev_err(priv->adapter->dev, "%s: in processing"
-					" IE, bytes left < IE length\n",
-					__func__);
-				break;
-			}
-			switch (element_id) {
-			case WLAN_EID_EXT_CAPABILITY:
-			case WLAN_EID_DS_PARAMS:
-			case WLAN_EID_HT_CAPABILITY:
-			case WLAN_EID_VENDOR_SPECIFIC:
-			case WLAN_EID_RSN:
-			case WLAN_EID_BSS_AC_ACCESS_DELAY:
-				ie[0] = element_id;
-				ie[1] = element_len;
-				memcpy(&ie[sizeof(struct ieee_types_header)],
-				       (u8 *) beacon
-				       + sizeof(struct ieee_types_header),
-				       element_len);
-				ie_len += ie[1] +
-					sizeof(struct ieee_types_header);
-				break;
-			default:
-				break;
-			}
-			beacon += element_len +
-					sizeof(struct ieee_types_header);
-			beacon_size -= element_len +
-					sizeof(struct ieee_types_header);
-		}
-		chan = ieee80211_get_channel(priv->wdev->wiphy,
-						scan_table[i].freq);
-		cfg80211_inform_bss(priv->wdev->wiphy, chan,
-					scan_table[i].mac_address,
-					0, scan_table[i].cap_info_bitmap,
-					scan_table[i].beacon_period,
-					ie_buf, ie_len,
-					scan_table[i].rssi, GFP_KERNEL);
-	}
-
-	kfree(ie_buf);
-	return 0;
-}
-
 /*
  * This function connects with a BSS.
  *
@@ -937,20 +804,19 @@ static int mwifiex_inform_bss_from_scan_result(struct mwifiex_private *priv,
  * For Infra mode, the function returns failure if the specified SSID
  * is not found in scan table. However, for Ad-Hoc mode, it can create
  * the IBSS if it does not exist. On successful completion in either case,
- * the function notifies the CFG802.11 subsystem of the new BSS connection,
- * otherwise the kernel will panic.
+ * the function notifies the CFG802.11 subsystem of the new BSS connection.
  */
 static int
 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 		       u8 *bssid, int mode, struct ieee80211_channel *channel,
 		       struct cfg80211_connect_params *sme, bool privacy)
 {
 	struct mwifiex_802_11_ssid req_ssid;
-	struct mwifiex_ssid_bssid ssid_bssid;
 	int ret, auth_type = 0;
+	struct cfg80211_bss *bss = NULL;
+	u8 is_scanning_required = 0;
 
 	memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));
-	memset(&ssid_bssid, 0, sizeof(struct mwifiex_ssid_bssid));
 
 	req_ssid.ssid_len = ssid_len;
 	if (ssid_len > IEEE80211_MAX_SSID_LEN) {
@@ -1028,30 +894,48 @@ mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 		return -EFAULT;
 	}
 
+	/*
+	 * Scan entries are valid for some time (15 sec). So we can save one
+	 * active scan time if we just try cfg80211_get_bss first. If it fails
+	 * then request scan and cfg80211_get_bss() again for final output.
+	 */
+	while (1) {
+		if (is_scanning_required) {
+			/* Do specific SSID scanning */
+			if (mwifiex_request_scan(priv, &req_ssid)) {
+				dev_err(priv->adapter->dev, "scan error\n");
+				return -EFAULT;
+			}
+		}
 
-	memcpy(&ssid_bssid.ssid, &req_ssid, sizeof(struct mwifiex_802_11_ssid));
-
-	if (mode != NL80211_IFTYPE_ADHOC) {
-		if (mwifiex_find_best_bss(priv, &ssid_bssid))
-			return -EFAULT;
-		/* Inform the BSS information to kernel, otherwise
-		 * kernel will give a panic after successful assoc */
-		if (mwifiex_inform_bss_from_scan_result(priv, &req_ssid))
-			return -EFAULT;
+		/* Find the BSS we want using available scan results */
+		if (mode == NL80211_IFTYPE_ADHOC)
+			bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
+					       bssid, ssid, ssid_len,
+					       WLAN_CAPABILITY_IBSS,
+					       WLAN_CAPABILITY_IBSS);
+		else
+			bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
+					       bssid, ssid, ssid_len,
+					       WLAN_CAPABILITY_ESS,
+					       WLAN_CAPABILITY_ESS);
+
+		if (!bss) {
+			if (is_scanning_required) {
+				dev_warn(priv->adapter->dev, "assoc: requested "
+					 "bss not found in scan results\n");
+				break;
+			}
+			is_scanning_required = 1;
+		} else {
+			dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
+					(char *) req_ssid.ssid, bss->bssid);
+			memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
+			break;
+		}
 	}
 
-	dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
-	       (char *) req_ssid.ssid, ssid_bssid.bssid);
-
-	memcpy(&priv->cfg_bssid, ssid_bssid.bssid, 6);
-
-	/* Connect to BSS by ESSID */
-	memset(&ssid_bssid.bssid, 0, ETH_ALEN);
-
-	if (!netif_queue_stopped(priv->netdev))
-		netif_stop_queue(priv->netdev);
-
-	if (mwifiex_bss_start(priv, &ssid_bssid))
+	if (mwifiex_bss_start(priv, bss, &req_ssid))
 		return -EFAULT;
 
 	if (mode == NL80211_IFTYPE_ADHOC) {
@@ -1416,13 +1300,8 @@ mwifiex_cfg80211_results(struct work_struct *work)
 					MWIFIEX_SCAN_TYPE_ACTIVE;
 			scan_req->chan_list[i].scan_time = 0;
 		}
-		if (mwifiex_set_user_scan_ioctl(priv, scan_req)) {
+		if (mwifiex_set_user_scan_ioctl(priv, scan_req))
 			ret = -EFAULT;
-			goto done;
-		}
-		if (mwifiex_inform_bss_from_scan_result(priv, NULL))
-			ret = -EFAULT;
-done:
 		priv->scan_result_status = ret;
 		dev_dbg(priv->adapter->dev, "info: %s: sending scan results\n",
 							__func__);

trunk/drivers/net/wireless/mwifiex/fw.h

@@ -821,6 +821,14 @@ struct host_cmd_ds_txpwr_cfg {
 	__le32 mode;
 } __packed;
 
+struct mwifiex_bcn_param {
+	u8 bssid[ETH_ALEN];
+	u8 rssi;
+	__le32 timestamp[2];
+	__le16 beacon_period;
+	__le16 cap_info_bitmap;
+} __packed;
+
 #define MWIFIEX_USER_SCAN_CHAN_MAX             50
 
 #define MWIFIEX_MAX_SSID_LIST_LENGTH         10
@@ -861,13 +869,6 @@ struct mwifiex_user_scan_ssid {
 } __packed;
 
 struct mwifiex_user_scan_cfg {
-	/*
-	 *  Flag set to keep the previous scan table intact
-	 *
-	 *  If set, the scan results will accumulate, replacing any previous
-	 *   matched entries for a BSS with the new scan data
-	 */
-	u8 keep_previous_scan;
 	/*
 	 *  BSS mode to be sent in the firmware command
 	 */

trunk/drivers/net/wireless/mwifiex/init.c

@@ -152,19 +152,6 @@ static int mwifiex_init_priv(struct mwifiex_private *priv)
 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
 {
 	int ret;
-	u32 buf_size;
-	struct mwifiex_bssdescriptor *temp_scan_table;
-
-	/* Allocate buffer to store the BSSID list */
-	buf_size = sizeof(struct mwifiex_bssdescriptor) * MWIFIEX_MAX_AP;
-	temp_scan_table = kzalloc(buf_size, GFP_KERNEL);
-	if (!temp_scan_table) {
-		dev_err(adapter->dev, "%s: failed to alloc temp_scan_table\n",
-		       __func__);
-		return -ENOMEM;
-	}
-
-	adapter->scan_table = temp_scan_table;
 
 	/* Allocate command buffer */
 	ret = mwifiex_alloc_cmd_buffer(adapter);
@@ -222,14 +209,8 @@ static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
 	adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME;
 	adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME;
 
-	adapter->num_in_scan_table = 0;
-	memset(adapter->scan_table, 0,
-	       (sizeof(struct mwifiex_bssdescriptor) * MWIFIEX_MAX_AP));
 	adapter->scan_probes = 1;
 
-	memset(adapter->bcn_buf, 0, sizeof(adapter->bcn_buf));
-	adapter->bcn_buf_end = adapter->bcn_buf;
-
 	adapter->multiple_dtim = 1;
 
 	adapter->local_listen_interval = 0;	/* default value in firmware
@@ -326,8 +307,6 @@ mwifiex_free_adapter(struct mwifiex_adapter *adapter)
 	del_timer(&adapter->cmd_timer);
 
 	dev_dbg(adapter->dev, "info: free scan table\n");
-	kfree(adapter->scan_table);
-	adapter->scan_table = NULL;
 
 	adapter->if_ops.cleanup_if(adapter);
 

trunk/drivers/net/wireless/mwifiex/join.c

@@ -223,32 +223,6 @@ mwifiex_setup_rates_from_bssdesc(struct mwifiex_private *priv,
 	return 0;
 }
 
-/*
- * This function updates the scan entry TSF timestamps to reflect
- * a new association.
- */
-static void
-mwifiex_update_tsf_timestamps(struct mwifiex_private *priv,
-			      struct mwifiex_bssdescriptor *new_bss_desc)
-{
-	struct mwifiex_adapter *adapter = priv->adapter;
-	u32 table_idx;
-	long long new_tsf_base;
-	signed long long tsf_delta;
-
-	memcpy(&new_tsf_base, new_bss_desc->time_stamp, sizeof(new_tsf_base));
-
-	tsf_delta = new_tsf_base - new_bss_desc->network_tsf;
-
-	dev_dbg(adapter->dev, "info: TSF: update TSF timestamps, "
-		"0x%016llx -> 0x%016llx\n",
-	       new_bss_desc->network_tsf, new_tsf_base);
-
-	for (table_idx = 0; table_idx < adapter->num_in_scan_table;
-	     table_idx++)
-		adapter->scan_table[table_idx].network_tsf += tsf_delta;
-}
-
 /*
  * This function appends a WAPI IE.
  *
@@ -639,12 +613,6 @@ int mwifiex_ret_802_11_associate(struct mwifiex_private *priv,
 
 	priv->curr_bss_params.band = (u8) bss_desc->bss_band;
 
-	/*
-	 * Adjust the timestamps in the scan table to be relative to the newly
-	 * associated AP's TSF
-	 */
-	mwifiex_update_tsf_timestamps(priv, bss_desc);
-
 	if (bss_desc->wmm_ie.vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC)
 		priv->curr_bss_params.wmm_enabled = true;
 	else