cfg80211: add wowlan net-detect support

Add a new WoWLAN API to enable net-detect as a wake up trigger.
Net-detect allows the device to scan in the background while the
host is asleep to wake up the host system when a matching network
is found.

Reuse the scheduled scan attributes to specify how the scan is
performed while suspended and the matches that will trigger a
wake event.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 365db67ca71d..d23208194e3c 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -1686,6 +1686,7 @@ enum nl80211_commands {
  *
  * @NL80211_ATTR_OPER_CLASS: operating class
  *
+ * @NUM_NL80211_ATTR: total number of nl80211_attrs available
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -2043,6 +2044,7 @@ enum nl80211_attrs {
         /* add attributes here, update the policy in nl80211.c */
 
         __NL80211_ATTR_AFTER_LAST,
+        NUM_NL80211_ATTR = __NL80211_ATTR_AFTER_LAST,
         NL80211_ATTR_MAX = __NL80211_ATTR_AFTER_LAST - 1
 };
 
@@ -3610,6 +3612,25 @@ struct nl80211_pattern_support {
  * @NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS: For wakeup reporting only,
  *      the TCP connection ran out of tokens to use for data to send to the
  *      service
+ * @NL80211_WOWLAN_TRIG_NET_DETECT: wake up when a configured network
+ *      is detected.  This is a nested attribute that contains the
+ *      same attributes used with @NL80211_CMD_START_SCHED_SCAN.  It
+ *      specifies how the scan is performed (e.g. the interval and the
+ *      channels to scan) as well as the scan results that will
+ *      trigger a wake (i.e. the matchsets).
+ * @NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS: nested attribute
+ *      containing an array with information about what triggered the
+ *      wake up.  If no elements are present in the array, it means
+ *      that the information is not available.  If more than one
+ *      element is present, it means that more than one match
+ *      occurred.
+ *      Each element in the array is a nested attribute that contains
+ *      one optional %NL80211_ATTR_SSID attribute and one optional
+ *      %NL80211_ATTR_SCAN_FREQUENCIES attribute.  At least one of
+ *      these attributes must be present.  If
+ *      %NL80211_ATTR_SCAN_FREQUENCIES contains more than one
+ *      frequency, it means that the match occurred in more than one
+ *      channel.
  * @NUM_NL80211_WOWLAN_TRIG: number of wake on wireless triggers
  * @MAX_NL80211_WOWLAN_TRIG: highest wowlan trigger attribute number
  *
@@ -3635,6 +3656,8 @@ enum nl80211_wowlan_triggers {
         NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH,
         NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST,
         NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS,
+        NL80211_WOWLAN_TRIG_NET_DETECT,
+        NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS,
 
         /* keep last */
         NUM_NL80211_WOWLAN_TRIG,