qcacmn: Add wrapper for nla_parse()

The Linux kernel version 4.12 introduced an API change to nla_parse().
Add conditional compilation to call nla_parse with the correct
parameters based on the version of the linux kernel being compiled
against.

Change-Id: Ie904d217a42a2396f8245251a9c90a15dac2c0c9
CRs-Fixed: 2093354

os_if/linux/nan/src/os_if_nan.c

@@ -564,8 +564,8 @@ int os_if_nan_process_ndp_cmd(struct wlan_objmgr_psoc *psoc,
 	struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_NDP_PARAMS_MAX + 1];
 	char *iface_name;
 
-	if (nla_parse(tb, QCA_WLAN_VENDOR_ATTR_NDP_PARAMS_MAX,
-			data, data_len, vendor_attr_policy)) {
+	if (wlan_cfg80211_nla_parse(tb, QCA_WLAN_VENDOR_ATTR_NDP_PARAMS_MAX,
+				    data, data_len, vendor_attr_policy)) {
 		cfg80211_err("Invalid NDP vendor command attributes");
 		return -EINVAL;
 	}

os_if/linux/scan/src/wlan_cfg80211_scan.c

@@ -1458,8 +1458,8 @@ int wlan_vendor_abort_scan(struct wlan_objmgr_pdev *pdev,
 	uint8_t pdev_id;
 
 	pdev_id = wlan_objmgr_pdev_get_pdev_id(pdev);
-	if (nla_parse(tb, QCA_WLAN_VENDOR_ATTR_SCAN_MAX, data,
-		      data_len, scan_policy)) {
+	if (wlan_cfg80211_nla_parse(tb, QCA_WLAN_VENDOR_ATTR_SCAN_MAX, data,
+				    data_len, scan_policy)) {
 		cfg80211_err("Invalid ATTR");
 		return ret;
 	}

os_if/linux/wifi_pos/src/os_if_wifi_pos.c

@@ -93,7 +93,7 @@ static int  wifi_pos_parse_req(const void *data, int len, int pid,
 	tAniMsgHdr *msg_hdr;
 	struct nlattr *tb[CLD80211_ATTR_MAX + 1];
 
-	if (nla_parse(tb, CLD80211_ATTR_MAX, data, len, NULL)) {
+	if (wlan_cfg80211_nla_parse(tb, CLD80211_ATTR_MAX, data, len, NULL)) {
 		cfg80211_err("invalid data in request");
 		return OEM_ERR_INVALID_MESSAGE_TYPE;
 	}

os_if/linux/wlan_cfg80211.h

@@ -64,6 +64,26 @@
 	.doit = NULL							\
 },
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0)
+static inline int wlan_cfg80211_nla_parse(struct nlattr **tb,
+					  int maxtype,
+					  const struct nlattr *head,
+					  int len,
+					  const struct nla_policy *policy)
+{
+	return nla_parse(tb, maxtype, head, len, policy);
+}
+#else
+static inline int wlan_cfg80211_nla_parse(struct nlattr **tb,
+					  int maxtype,
+					  const struct nlattr *head,
+					  int len,
+					  const struct nla_policy *policy)
+{
+	return nla_parse(tb, maxtype, head, len, policy, NULL);
+}
+#endif
+
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0))
 static inline int
 wlan_cfg80211_nla_put_u64(struct sk_buff *skb, int attrtype, u64 value)

utils/fwlog/dbglog_host.c

@@ -4174,7 +4174,8 @@ static void cnss_diag_cmd_handler(const void *data, int data_len,
 	 * audit note: it is ok to pass a NULL policy here since a
 	 * length check on the data is added later already
 	 */
-	if (nla_parse(tb, CLD80211_ATTR_MAX, data, data_len, NULL)) {
+	if (wlan_cfg80211_nla_parse(tb, CLD80211_ATTR_MAX,
+				    data, data_len, NULL)) {
 		AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("%s: nla parse fails \n",
 							__func__));
 		return;

utils/ptt/src/wlan_ptt_sock_svc.c

@@ -272,7 +272,8 @@ static void ptt_cmd_handler(const void *data, int data_len, void *ctx, int pid)
 	 * audit note: it is ok to pass a NULL policy here since a
 	 * length check on the data is added later already
 	 */
-	if (nla_parse(tb, CLD80211_ATTR_MAX, data, data_len, NULL)) {
+	if (wlan_cfg80211_nla_parse(tb, CLD80211_ATTR_MAX,
+				    data, data_len, NULL)) {
 		PTT_TRACE(QDF_TRACE_LEVEL_ERROR, "Invalid ATTR");
 		return;
 	}