cfg80211: make WMM TSPEC support flag an nl80211 feature flag

During the review of the corresponding wpa_supplicant patches we
noticed that the only way for it to detect that this functionality
is supported currently is to check for the command support. This
can be misleading though, as the command was also designed to, in
the future, support pure 802.11 TSPECs.

Expose the WMM-TSPEC feature flag to nl80211 so later we can also
expose an 802.11-TSPEC feature flag (if needed) to differentiate
the two cases.

Note: this change isn't needed in 3.18 as there's no driver there
yet that supports the functionality at all.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index b553c48404d3..be1d5def304d 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -4052,6 +4052,10 @@ enum nl80211_ap_sme_features {
  *      multiplexing powersave, ie. can turn off all but one chain
  *      and then wake the rest up as required after, for example,
  *      rts/cts handshake.
+ * @NL80211_FEATURE_SUPPORTS_WMM_ADMISSION: the device supports setting up WMM
+ *      TSPEC sessions (TID aka TSID 0-7) with the %NL80211_CMD_ADD_TX_TS
+ *      command. Standard IEEE 802.11 TSPEC setup is not yet supported, it
+ *      needs to be able to handle Block-Ack agreements and other things.
  */
 enum nl80211_feature_flags {
         NL80211_FEATURE_SK_TX_STATUS                    = 1 << 0,
@@ -4080,6 +4084,7 @@ enum nl80211_feature_flags {
         NL80211_FEATURE_ACKTO_ESTIMATION                = 1 << 23,
         NL80211_FEATURE_STATIC_SMPS                     = 1 << 24,
         NL80211_FEATURE_DYNAMIC_SMPS                    = 1 << 25,
+        NL80211_FEATURE_SUPPORTS_WMM_ADMISSION          = 1 << 26,
 };
 
 /**