1 files changed, 68 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mld/low_latency.h b/drivers/net/wireless/intel/iwlwifi/mld/low_latency.h
new file mode 100644
index 000000000000..f59684d235af
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/mld/low_latency.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
+/*
+ * Copyright (C) 2024 Intel Corporation
+ */
+#ifndef __iwl_mld_low_latency_h__
+#define __iwl_mld_low_latency_h__
+
+/**
+ * struct iwl_mld_low_latency_packets_counters - Packets counters
+ * @lock: synchronize the counting in data path against the worker
+ * @vo_vi: per-mac, counts the number of TX and RX voice and video packets
+ */
+struct iwl_mld_low_latency_packets_counters {
+	spinlock_t lock;
+	u32 vo_vi[NUM_MAC_INDEX_DRIVER];
+} ____cacheline_aligned_in_smp;
+
+/**
+ * enum iwl_mld_low_latency_cause - low-latency set causes
+ *
+ * @LOW_LATENCY_TRAFFIC: indicates low-latency traffic was detected
+ * @LOW_LATENCY_DEBUGFS: low-latency mode set from debugfs
+ * @LOW_LATENCY_VIF_TYPE: low-latency mode set because of vif type (AP)
+ */
+enum iwl_mld_low_latency_cause {
+	LOW_LATENCY_TRAFFIC	= BIT(0),
+	LOW_LATENCY_DEBUGFS	= BIT(1),
+	LOW_LATENCY_VIF_TYPE	= BIT(2),
+};
+
+/**
+ * struct iwl_mld_low_latency - Manage low-latency detection and activation.
+ * @work: this work is used to detect low-latency by monitoring the number of
+ *	voice and video packets transmitted in a period of time. If the
+ *	threshold is reached, low-latency is activated. When active,
+ *	it is deactivated if the threshold is not reached within a
+ *	10-second period.
+ * @timestamp: timestamp of the last update.
+ * @window_start: per-mac, timestamp of the start of the current window. when
+ *	the window is over, the counters are reset.
+ * @pkts_counters: per-queue array voice/video packet counters
+ * @result: per-mac latest low-latency result
+ * @stopped: if true, ignore the requests to update the counters
+ */
+struct iwl_mld_low_latency {
+	struct wiphy_delayed_work work;
+	unsigned long timestamp;
+	unsigned long window_start[NUM_MAC_INDEX_DRIVER];
+	struct iwl_mld_low_latency_packets_counters *pkts_counters;
+	bool result[NUM_MAC_INDEX_DRIVER];
+	bool stopped;
+};
+
+int iwl_mld_low_latency_init(struct iwl_mld *mld);
+void iwl_mld_low_latency_free(struct iwl_mld *mld);
+void iwl_mld_low_latency_restart_cleanup(struct iwl_mld *mld);
+void iwl_mld_vif_update_low_latency(struct iwl_mld *mld,
+				    struct ieee80211_vif *vif,
+				    bool low_latency,
+				    enum iwl_mld_low_latency_cause cause);
+void iwl_mld_low_latency_update_counters(struct iwl_mld *mld,
+					 struct ieee80211_hdr *hdr,
+					 struct ieee80211_sta *sta,
+					 u8 queue);
+void iwl_mld_low_latency_stop(struct iwl_mld *mld);
+void iwl_mld_low_latency_restart(struct iwl_mld *mld);
+
+#endif /* __iwl_mld_low_latency_h__ */