iwlwifi: mvm: add duplicate packet detection per rx queue

Next hardware will direct TCP/UDP streams to different cores.
Packets belonging to the same stream will be directed to the same
core.
The result is that duplicates will be always directed to the same
rx queue were the first packet was received.
This enabled parallelizing the duplicate packet detection across
the different cores, without sharing data between the rx queues.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.h b/drivers/net/wireless/intel/iwlwifi/mvm/sta.h
index f95f603ad56c..db701cad87c1 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.h
@@ -296,6 +296,16 @@ struct iwl_mvm_key_pn {
 };
 
 /**
+ * struct iwl_mvm_rxq_dup_data - per station per rx queue data
+ * @last_seq: last sequence per tid for duplicate packet detection
+ * @last_sub_frame: last subframe packet
+ */
+struct iwl_mvm_rxq_dup_data {
+	__le16 last_seq[IWL_MAX_TID_COUNT + 1];
+	u8 last_sub_frame[IWL_MAX_TID_COUNT + 1];
+} ____cacheline_aligned_in_smp;
+
+/**
  * struct iwl_mvm_sta - representation of a station in the driver
  * @sta_id: the index of the station in the fw (will be replaced by id_n_color)
  * @tfd_queue_msk: the tfd queues used by the station
@@ -321,6 +331,7 @@ struct iwl_mvm_key_pn {
  *	we are sending frames from an AMPDU queue and there was a hole in
  *	the BA window. To be used for UAPSD only.
  * @ptk_pn: per-queue PTK PN data structures
+ * @dup_data: per queue duplicate packet detection data
  *
  * When mac80211 creates a station it reserves some space (hw->sta_data_size)
  * in the structure for use by driver. This structure is placed in that
@@ -340,8 +351,8 @@ struct iwl_mvm_sta {
 	struct iwl_mvm_tid_data tid_data[IWL_MAX_TID_COUNT];
 	struct iwl_lq_sta lq_sta;
 	struct ieee80211_vif *vif;
-
 	struct iwl_mvm_key_pn __rcu *ptk_pn[4];
+	struct iwl_mvm_rxq_dup_data *dup_data;
 
 	/* Temporary, until the new TLC will control the Tx protection */
 	s8 tx_protection;