nl80211/cfg80211: Set Operating Mode Notification

This attribute is needed for setting Operating Mode Notification
in AP mode from User Space. This functionality is required when
User Space received Assoc Request contains Operation Mode
Notification element.
Signed-off-by: Marek Kwaczynski <marek.kwaczynski@tieto.com>
[fix typos, nl80211 documentation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

include/net/cfg80211.h

@@ -747,6 +747,8 @@ enum station_parameters_apply_mask {
  * @supported_channels_len: number of supported channels
  * @supported_oper_classes: supported oper classes in IEEE 802.11 format
  * @supported_oper_classes_len: number of supported operating classes
+ * @opmode_notif: operating mode field from Operating Mode Notification
+ * @opmode_notif_used: information if operating mode field is used
  */
 struct station_parameters {
 	const u8 *supported_rates;
@@ -770,6 +772,8 @@ struct station_parameters {
 	u8 supported_channels_len;
 	const u8 *supported_oper_classes;
 	u8 supported_oper_classes_len;
+	u8 opmode_notif;
+	bool opmode_notif_used;
 };
 
 /**

include/uapi/linux/nl80211.h

@@ -1520,6 +1520,10 @@ enum nl80211_commands {
  * @NL80211_ATTR_SUPPORT_10_MHZ: A flag indicating that the device supports
  *	10 MHz channel bandwidth.
  *
+ * @NL80211_ATTR_OPMODE_NOTIF: Operating mode field from Operating Mode
+ *	Notification Element based on association request when used with
+ *	%NL80211_CMD_NEW_STATION; u8 attribute.
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -1839,6 +1843,8 @@ enum nl80211_attrs {
 	NL80211_ATTR_SUPPORT_5_MHZ,
 	NL80211_ATTR_SUPPORT_10_MHZ,
 
+	NL80211_ATTR_OPMODE_NOTIF,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,

net/wireless/nl80211.c

@@ -357,6 +357,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
 	[NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 	[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 	[NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
+	[NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 };
 
 /* policy for the key attributes */
@@ -4132,6 +4133,12 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
 		params.vht_capa =
 			nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
 
+	if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
+		params.opmode_notif_used = true;
+		params.opmode_notif =
+			nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
+	}
+
 	if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
 		params.plink_action =
 			nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);