qcacld-3.0: Add policy attribute to FETCH_BSS_TRANSITION_STATUS

According to new changes in kernel 5.4 version onwards, driver has to
provide the policy for a NL command to be verified against while
registering wiphy to the kernel.

To satisfy kernel 5.4 requirement add policy to following vendor
command as part of this change:
	QCA_NL80211_VENDOR_SUBCMD_FETCH_BSS_TRANSITION_STATUS

Change-Id: I7c49d959e7c5d232572aae78616b18cee875cbb1
CRs-Fixed: 2632084

core/hdd/src/wlan_hdd_bss_transition.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2020 The Linux Foundation. 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
@@ -82,6 +82,22 @@ static int wlan_hdd_fill_btm_resp(struct sk_buff *reply_skb,
 	return 0;
 }
 
+const struct nla_policy
+btm_params_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
+	[QCA_WLAN_VENDOR_ATTR_BTM_MBO_TRANSITION_REASON] = {
+						.type = NLA_U8},
+	[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO] =
+			VENDOR_NLA_POLICY_NESTED(btm_cand_list_policy),
+};
+
+const struct nla_policy
+btm_cand_list_policy[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_MAX + 1]
+	= {[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_BSSID] = {
+					.len = QDF_MAC_ADDR_SIZE},
+	   [QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_STATUS] = {
+						.type = NLA_U32},
+};
+
 /**
  * __wlan_hdd_cfg80211_fetch_bss_transition_status() - fetch bss transition
  * status
@@ -118,21 +134,6 @@ __wlan_hdd_cfg80211_fetch_bss_transition_status(struct wiphy *wiphy,
 	mac_handle_t mac_handle;
 	QDF_STATUS status;
 
-	const struct nla_policy
-	btm_params_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
-		[QCA_WLAN_VENDOR_ATTR_BTM_MBO_TRANSITION_REASON] = {
-							.type = NLA_U8},
-		[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO] = {
-							.type = NLA_NESTED},
-	};
-	const struct nla_policy
-	btm_cand_list_policy[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_MAX + 1]
-		= {[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_BSSID] = {
-						.len = QDF_MAC_ADDR_SIZE},
-		   [QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_STATUS] = {
-							.type = NLA_U32},
-		};
-
 	hdd_enter();
 
 	if (hdd_get_conparam() == QDF_GLOBAL_FTM_MODE) {

core/hdd/src/wlan_hdd_bss_transition.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2018, 2020 The Linux Foundation. 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
@@ -43,6 +43,14 @@ wlan_hdd_cfg80211_fetch_bss_transition_status(struct wiphy *wiphy,
 					      struct wireless_dev *wdev,
 					      const void *data, int data_len);
 
+extern const struct nla_policy
+	btm_params_policy
+	[QCA_WLAN_VENDOR_ATTR_MAX + 1];
+
+extern const struct nla_policy
+	btm_cand_list_policy
+	[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_MAX + 1];
+
 #define FEATURE_BSS_TRANSITION_VENDOR_COMMANDS				\
 {									\
 	.info.vendor_id = QCA_NL80211_VENDOR_ID,			\
@@ -51,7 +59,9 @@ wlan_hdd_cfg80211_fetch_bss_transition_status(struct wiphy *wiphy,
 	.flags = WIPHY_VENDOR_CMD_NEED_WDEV |				\
 		 WIPHY_VENDOR_CMD_NEED_NETDEV |				\
 		 WIPHY_VENDOR_CMD_NEED_RUNNING,				\
-	.doit = wlan_hdd_cfg80211_fetch_bss_transition_status		\
+	.doit = wlan_hdd_cfg80211_fetch_bss_transition_status,		\
+	vendor_command_policy(btm_params_policy,			\
+			      QCA_WLAN_VENDOR_ATTR_MAX)			\
 },
 #else /* FEATURE_BSS_TRANSITION */
 #define FEATURE_BSS_TRANSITION_VENDOR_COMMANDS