cfg80211: export expected throughput through get_station()

Users may need information about the expected throughput
towards a given peer.
This value is supposed to consider the size overhead
generated by the 802.11 header.

This value is exported in kbps through the get_station() API
by including it into the station_info object.
Moreover, it is sent to user space when replying to the
nl80211 GET_STATION command.

This information will be useful to the batman-adv module
which will use it for its new metric computation.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 0cfa827123ff..fb0efa1f9066 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2199,6 +2199,8 @@ enum nl80211_sta_bss_param {
  *      Contains a nested array of signal strength attributes (u8, dBm)
  * @NL80211_STA_INFO_CHAIN_SIGNAL_AVG: per-chain signal strength average
  *      Same format as NL80211_STA_INFO_CHAIN_SIGNAL.
+ * @NL80211_STA_EXPECTED_THROUGHPUT: expected throughput considering also the
+ *      802.11 header (u32, kbps)
  * @__NL80211_STA_INFO_AFTER_LAST: internal
  * @NL80211_STA_INFO_MAX: highest possible station info attribute
  */
@@ -2230,6 +2232,7 @@ enum nl80211_sta_info {
         NL80211_STA_INFO_TX_BYTES64,
         NL80211_STA_INFO_CHAIN_SIGNAL,
         NL80211_STA_INFO_CHAIN_SIGNAL_AVG,
+        NL80211_STA_INFO_EXPECTED_THROUGHPUT,
 
         /* keep last */
         __NL80211_STA_INFO_AFTER_LAST,