mac80211: enable collecting station statistics per-CPU
If the driver advertises the new HW flag USE_RSS, make the
station statistics on the fast-rx path per-CPU. This will
enable calling the RX in parallel, only hitting locking or
shared cachelines when the fast-RX path isn't available.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index fd5ec44..5f4b4c7 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1980,6 +1980,9 @@
* order and does not need to manage its own reorder buffer or BA session
* timeout.
*
+ * @IEEE80211_HW_USES_RSS: The device uses RSS and thus requires parallel RX,
+ * which implies using per-CPU station statistics.
+ *
* @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays
*/
enum ieee80211_hw_flags {
@@ -2017,6 +2020,7 @@
IEEE80211_HW_BEACON_TX_STATUS,
IEEE80211_HW_NEEDS_UNIQUE_STA_ADDR,
IEEE80211_HW_SUPPORTS_REORDERING_BUFFER,
+ IEEE80211_HW_USES_RSS,
/* keep last, obviously */
NUM_IEEE80211_HW_FLAGS