cfg80211: allow the user space to change current NAN configuration

Some NAN configuration paramaters may change during the operation of
the NAN device. For example, a user may want to update master preference
value when the device gets plugged/unplugged to the power.
Add API that allows to do so.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index e4935d963061..9c9c0c352873 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -862,6 +862,10 @@
  *      the response to this command.
  *      Look at %NL80211_ATTR_SOCKET_OWNER as well.
  * @NL80211_CMD_DEL_NAN_FUNCTION: Delete a NAN function by cookie.
+ * @NL80211_CMD_CHANGE_NAN_CONFIG: Change current NAN configuration. NAN
+ *      must be operational (%NL80211_CMD_START_NAN was executed).
+ *      It must contain at least one of the following attributes:
+ *      %NL80211_ATTR_NAN_MASTER_PREF, %NL80211_ATTR_NAN_DUAL.
  *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
@@ -1055,6 +1059,7 @@ enum nl80211_commands {
         NL80211_CMD_STOP_NAN,
         NL80211_CMD_ADD_NAN_FUNCTION,
         NL80211_CMD_DEL_NAN_FUNCTION,
+        NL80211_CMD_CHANGE_NAN_CONFIG,
 
         /* add new commands above here */
 
@@ -1910,12 +1915,14 @@ enum nl80211_commands {
  *      used to pull the stored data for mesh peer in power save state.
  *
  * @NL80211_ATTR_NAN_MASTER_PREF: the master preference to be used by
- *      %NL80211_CMD_START_NAN. Its type is u8 and it can't be 0.
+ *      %NL80211_CMD_START_NAN and optionally with
+ *      %NL80211_CMD_CHANGE_NAN_CONFIG. Its type is u8 and it can't be 0.
  *      Also, values 1 and 255 are reserved for certification purposes and
  *      should not be used during a normal device operation.
  * @NL80211_ATTR_NAN_DUAL: NAN dual band operation config (see
  *      &enum nl80211_nan_dual_band_conf). This attribute is used with
- *      %NL80211_CMD_START_NAN.
+ *      %NL80211_CMD_START_NAN and optionally with
+ *      %NL80211_CMD_CHANGE_NAN_CONFIG.
  * @NL80211_ATTR_NAN_FUNC: a function that can be added to NAN. See
  *      &enum nl80211_nan_func_attributes for description of this nested
  *      attribute.