qcacld-3.0: Fixes for p2p from GUI/standalone

* From the GUI, After change interface, only stop
  and de-init of adapter was getting done.
  The interface to be changed was not getting started. So, start
  the adapter from the mode since the interface was already up in the
  P2P device mode before the change_iface, supplicant doesn't invoke
  interface up on the adapter again.

* In the standalone scenario, the interface up for the p2p0 comes 1st,
  as part of which the sme session shall be opened with sessionId 0.
  So, as part of indicating the management from to HDD, LIM layer tries
  to traverse the adapter list with the sessionId and since the wlan0 interface
  is also part of the linked list with the same sessid. It tries to send the
  management frames on the wrong interface index because of which frames were
  not reaching the supplicant. To migitate this issue, once the adapter is
  allocated, fill the session with invalid sessionId so that it can be updated
  with the valid sessionId once the session is created.

Change-Id: I63b320aea1eb779883dfa070bad3f2057fd5c371
CRs-Fixed: 1056344

core/hdd/inc/wlan_hdd_main.h

@@ -260,6 +260,10 @@
 #define BSS_WAIT_TIMEOUT 10000
 
 #define PRE_CAC_SSID "pre_cac_ssid"
+
+/* session ID invalid */
+#define HDD_SESSION_ID_INVALID    0xFF
+
 /*
  * Generic asynchronous request/response support
  *

core/hdd/src/wlan_hdd_cfg80211.c

@@ -8345,7 +8345,7 @@ static int wlan_hdd_change_client_iface_to_new_mode(struct net_device *ndev,
 	struct hdd_config *config = hdd_ctx->config;
 	hdd_wext_state_t *wext;
 	struct wireless_dev *wdev;
-	QDF_STATUS status;
+	QDF_STATUS status = QDF_STATUS_SUCCESS;
 
 	ENTER();
 
@@ -8372,12 +8372,12 @@ static int wlan_hdd_change_client_iface_to_new_mode(struct net_device *ndev,
 	}
 	memset(&adapter->sessionCtx, 0, sizeof(adapter->sessionCtx));
 	hdd_set_station_ops(adapter->dev);
-	status = hdd_init_station_mode(adapter);
 	wext = WLAN_HDD_GET_WEXT_STATE_PTR(adapter);
 	wext->roamProfile.pAddIEScan = adapter->scan_info.scanAddIE.addIEdata;
 	wext->roamProfile.nAddIEScanLength =
 		adapter->scan_info.scanAddIE.length;
 	if (type == NL80211_IFTYPE_ADHOC) {
+		status = hdd_init_station_mode(adapter);
 		wext->roamProfile.BSSType = eCSR_BSS_TYPE_START_IBSS;
 		wext->roamProfile.phyMode =
 			hdd_cfg_xlate_to_csr_phy_mode(config->dot11Mode);
@@ -8497,7 +8497,11 @@ static int __wlan_hdd_cfg80211_change_iface(struct wiphy *wiphy,
 					type);
 			if (vstatus != QDF_STATUS_SUCCESS)
 				return -EINVAL;
-
+			if (hdd_start_adapter(pAdapter)) {
+				hdd_err("Failed to start adapter :%d",
+						pAdapter->device_mode);
+				return -EINVAL;
+			}
 			goto done;
 		case NL80211_IFTYPE_AP:
 		case NL80211_IFTYPE_P2P_GO:
@@ -8575,7 +8579,11 @@ static int __wlan_hdd_cfg80211_change_iface(struct wiphy *wiphy,
 					type);
 			if (status != QDF_STATUS_SUCCESS)
 				return status;
-
+			if (hdd_start_adapter(pAdapter)) {
+				hdd_err("Failed to start adapter :%d",
+						pAdapter->device_mode);
+				return -EINVAL;
+			}
 			goto done;
 
 		case NL80211_IFTYPE_AP:

core/hdd/src/wlan_hdd_main.c

@@ -1618,6 +1618,12 @@ int hdd_start_adapter(hdd_adapter_t *adapter)
 		if (ret)
 			goto err_start_adapter;
 		break;
+	case QDF_IBSS_MODE:
+		/*
+		 * For IBSS interface is initialized as part of
+		 * hdd_init_station_mode()
+		 */
+		return 0;
 	case QDF_FTM_MODE:
 		ret = hdd_start_ftm_adapter(adapter);
 		if (ret)
@@ -1801,7 +1807,6 @@ static int __hdd_open(struct net_device *dev)
 	int ret;
 
 	ENTER_DEV(dev);
-
 	MTRACE(qdf_trace(QDF_MODULE_ID_HDD, TRACE_CODE_HDD_OPEN_REQUEST,
 		adapter->sessionId, adapter->device_mode));
 
@@ -3181,6 +3186,8 @@ hdd_adapter_t *hdd_open_adapter(hdd_context_t *hdd_ctx, uint8_t session_type,
 	if (QDF_STATUS_SUCCESS != hdd_debugfs_init(adapter))
 		hdd_err("Interface %s wow debug_fs init failed", iface_name);
 
+	adapter->sessionId = HDD_SESSION_ID_INVALID;
+
 	return adapter;
 
 err_lro_cleanup:
@@ -6281,7 +6288,6 @@ static hdd_adapter_t *hdd_open_interfaces(hdd_context_t *hdd_ctx,
 
 	if (adapter == NULL)
 		return ERR_PTR(-ENOSPC);
-
 	ret = hdd_open_p2p_interface(hdd_ctx, rtnl_held);
 	if (ret)
 		goto err_close_adapter;

core/hdd/src/wlan_hdd_p2p.c

@@ -2481,7 +2481,8 @@ void __hdd_indicate_mgmt_frame(hdd_adapter_t *pAdapter,
 		}
 	}
 	/* Indicate Frame Over Normal Interface */
-	hddLog(LOG1, FL("Indicate Frame over NL80211 Interface"));
+	hddLog(LOG1, FL("Indicate Frame over NL80211 sessionid : %d, idx :%d"),
+			pAdapter->sessionId, pAdapter->dev->ifindex);
 
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0))
 	cfg80211_rx_mgmt(pAdapter->dev->ieee80211_ptr, freq, 0, pbFrames,