qcacld-3.0: Don't proceed with NDP peer handling if NDI is not UP

Firmware might send NDP peer indication/NDP responder response
while NDI deletion is in progress. Currently, NDP peer entry
gets added though vdev is moved to DOWN state and cleanup is
in progress. This leads to stale peer entry on that NDI vdev
and doesn't allow vdev delete when IFF_DOWN comes, as a peer
is present.
Check the vdev state before creating peer for NDP and skip
peer creation if NDI vdev is not in UP state(which indicates
that the vdev down is happening).
Also, don't process the NDP confirm if NDP peer is not created.

Change-Id: I73e79cc33b1a294e3f4a4a6e2f371033862c5709
CRs-Fixed: 3061756

components/nan/core/src/nan_main.c

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2016-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -551,6 +552,7 @@ static QDF_STATUS nan_handle_confirm(struct nan_datapath_confirm_event *confirm)
 	struct wlan_objmgr_psoc *psoc;
 	struct nan_psoc_priv_obj *psoc_nan_obj;
 	struct nan_vdev_priv_obj *vdev_nan_obj;
+	struct wlan_objmgr_peer *peer;
 
 	vdev_id = wlan_vdev_get_id(confirm->vdev);
 	psoc = wlan_vdev_get_psoc(confirm->vdev);
@@ -559,6 +561,15 @@ static QDF_STATUS nan_handle_confirm(struct nan_datapath_confirm_event *confirm)
 		return QDF_STATUS_E_NULL_VALUE;
 	}
 
+	peer = wlan_objmgr_get_peer_by_mac(psoc,
+					   confirm->peer_ndi_mac_addr.bytes,
+					   WLAN_NAN_ID);
+	if (!peer) {
+		nan_debug("Drop NDP confirm as peer isn't available");
+		return QDF_STATUS_E_NULL_VALUE;
+	}
+	wlan_objmgr_peer_release_ref(peer, WLAN_NAN_ID);
+
 	psoc_nan_obj = nan_get_psoc_priv_obj(psoc);
 	if (!psoc_nan_obj) {
 		nan_err("psoc_nan_obj is null");

core/mac/src/pe/nan/nan_datapath.c

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2016-2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -50,6 +51,11 @@ static QDF_STATUS lim_add_ndi_peer(struct mac_context *mac_ctx,
 	QDF_STATUS status;
 	uint8_t zero_mac_addr[QDF_MAC_ADDR_SIZE] = { 0, 0, 0, 0, 0, 0 };
 
+	if (!wlan_is_vdev_id_up(mac_ctx->pdev, vdev_id)) {
+		pe_err_rl("NDI vdev is not up");
+		return QDF_STATUS_E_FAILURE;
+	}
+
 	if (!qdf_mem_cmp(&zero_mac_addr, &peer_mac_addr.bytes[0],
 			QDF_MAC_ADDR_SIZE)) {
 		pe_err("Failing to add peer with all zero mac addr");