wifi: nl80211: Add more configuration options for NAN commands

Current NAN APIs have only basic configuration for master
preference and operating bands. Add and parse additional parameters
which provide more control over NAN synchronization. The newly added
attributes allow to publish additional NAN attributes and vendor
elements in NAN beacons, control scan and discovery beacons
periodicity, enable/disable DW notifications etc.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
tested: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250908140015.a4779492bf8e.I375feb919bd72358173766b9fe10010c40796b33@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 60 insertions, 0 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 4072a67c9cc9..e2f4ca500ea3 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -3913,6 +3913,38 @@ struct cfg80211_qos_map {
 };
 
 /**
+ * struct cfg80211_nan_band_config - NAN band specific configuration
+ *
+ * @chan: Pointer to the IEEE 802.11 channel structure. The channel to be used
+ *	for NAN operations on this band. For 2.4 GHz band, this is always
+ *	channel 6. For 5 GHz band, the channel is either 44 or 149, according
+ *	to the regulatory constraints. If chan pointer is NULL the entire band
+ *	configuration entry is considered invalid and should not be used.
+ * @rssi_close: RSSI close threshold used for NAN state transition algorithm
+ *	as described in chapters 3.3.6 and 3.3.7 "NAN Device Role and State
+ *	Transition" of Wi-Fi Aware Specification v4.0. If not
+ *	specified (set to 0), default device value is used. The value should
+ *	be greater than -60 dBm.
+ * @rssi_middle: RSSI middle threshold used for NAN state transition algorithm.
+ *	as described in chapters 3.3.6 and 3.3.7 "NAN Device Role and State
+ *	Transition" of Wi-Fi Aware Specification v4.0. If not
+ *	specified (set to 0), default device value is used. The value should be
+ *	greater than -75 dBm and less than rssi_close.
+ * @awake_dw_interval: Committed DW interval. Valid values range: 0-5. 0
+ *	indicates no wakeup for DW and can't be used on 2.4GHz band, otherwise
+ *	2^(n-1).
+ * @disable_scan: If true, the device will not scan this band for cluster
+ *	 merge. Disabling scan on 2.4 GHz band is not allowed.
+ */
+struct cfg80211_nan_band_config {
+	struct ieee80211_channel *chan;
+	s8 rssi_close;
+	s8 rssi_middle;
+	u8 awake_dw_interval;
+	bool disable_scan;
+};
+
+/**
  * struct cfg80211_nan_conf - NAN configuration
  *
  * This struct defines NAN configuration parameters
@@ -3921,10 +3953,31 @@ struct cfg80211_qos_map {
  * @bands: operating bands, a bitmap of &enum nl80211_band values.
  *	For instance, for NL80211_BAND_2GHZ, bit 0 would be set
  *	(i.e. BIT(NL80211_BAND_2GHZ)).
+ * @cluster_id: cluster ID used for NAN synchronization. This is a MAC address
+ *	that can take a value from 50-6F-9A-01-00-00 to 50-6F-9A-01-FF-FF.
+ *	If NULL, the device will pick a random Cluster ID.
+ * @scan_period: period (in seconds) between NAN scans.
+ * @scan_dwell_time: dwell time (in milliseconds) for NAN scans.
+ * @discovery_beacon_interval: interval (in TUs) for discovery beacons.
+ * @band_cfgs: array of band specific configurations, indexed by
+ *	&enum nl80211_band values.
+ * @extra_nan_attrs: pointer to additional NAN attributes.
+ * @extra_nan_attrs_len: length of the additional NAN attributes.
+ * @vendor_elems: pointer to vendor-specific elements.
+ * @vendor_elems_len: length of the vendor-specific elements.
  */
 struct cfg80211_nan_conf {
 	u8 master_pref;
 	u8 bands;
+	const u8 *cluster_id;
+	u16 scan_period;
+	u16 scan_dwell_time;
+	u8 discovery_beacon_interval;
+	struct cfg80211_nan_band_config band_cfgs[NUM_NL80211_BANDS];
+	const u8 *extra_nan_attrs;
+	u16 extra_nan_attrs_len;
+	const u8 *vendor_elems;
+	u16 vendor_elems_len;
 };
 
 /**
@@ -3933,10 +3986,17 @@ struct cfg80211_nan_conf {
  *
  * @CFG80211_NAN_CONF_CHANGED_PREF: master preference
  * @CFG80211_NAN_CONF_CHANGED_BANDS: operating bands
+ * @CFG80211_NAN_CONF_CHANGED_CONFIG: changed additional configuration.
+ *	When this flag is set, it indicates that some additional attribute(s)
+ *	(other then master_pref and bands) have been changed. In this case,
+ *	all the unchanged attributes will be properly configured to their
+ *	previous values. The driver doesn't need to store any
+ *	previous configuration besides master_pref and bands.
  */
 enum cfg80211_nan_conf_changes {
 	CFG80211_NAN_CONF_CHANGED_PREF = BIT(0),
 	CFG80211_NAN_CONF_CHANGED_BANDS = BIT(1),
+	CFG80211_NAN_CONF_CHANGED_CONFIG = BIT(2),
 };
 
 /**