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@@ -54,6 +54,7 @@ struct iwl3945_rate_info {
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u8 prev_table_rs; /* prev in rate table cmd */
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};
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+
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/*
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* These serve as indexes into
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* struct iwl_rate_info iwl_rates[IWL_RATE_COUNT];
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@@ -335,6 +336,106 @@ struct iwl_rate_mcs_info {
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char mcs[IWL_MAX_MCS_DISPLAY_SIZE];
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};
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+/**
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+ * struct iwl_rate_scale_data -- tx success history for one rate
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+ */
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+struct iwl_rate_scale_data {
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+ u64 data; /* bitmap of successful frames */
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+ s32 success_counter; /* number of frames successful */
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+ s32 success_ratio; /* per-cent * 128 */
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+ s32 counter; /* number of frames attempted */
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+ s32 average_tpt; /* success ratio * expected throughput */
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+ unsigned long stamp;
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+};
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+
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+/**
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+ * struct iwl_scale_tbl_info -- tx params and success history for all rates
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+ *
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+ * There are two of these in struct iwl_lq_sta,
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+ * one for "active", and one for "search".
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+ */
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+struct iwl_scale_tbl_info {
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+ enum iwl_table_type lq_type;
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+ u8 ant_type;
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+ u8 is_SGI; /* 1 = short guard interval */
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+ u8 is_ht40; /* 1 = 40 MHz channel width */
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+ u8 is_dup; /* 1 = duplicated data streams */
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+ u8 action; /* change modulation; IWL_[LEGACY/SISO/MIMO]_SWITCH_* */
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+ u8 max_search; /* maximun number of tables we can search */
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+ s32 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */
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+ u32 current_rate; /* rate_n_flags, uCode API format */
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+ struct iwl_rate_scale_data win[IWL_RATE_COUNT]; /* rate histories */
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+};
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+
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+struct iwl_traffic_load {
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+ unsigned long time_stamp; /* age of the oldest statistics */
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+ u32 packet_count[TID_QUEUE_MAX_SIZE]; /* packet count in this time
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+ * slice */
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+ u32 total; /* total num of packets during the
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+ * last TID_MAX_TIME_DIFF */
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+ u8 queue_count; /* number of queues that has
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+ * been used since the last cleanup */
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+ u8 head; /* start of the circular buffer */
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+};
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+
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+/**
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+ * struct iwl_lq_sta -- driver's rate scaling private structure
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+ *
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+ * Pointer to this gets passed back and forth between driver and mac80211.
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+ */
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+struct iwl_lq_sta {
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+ u8 active_tbl; /* index of active table, range 0-1 */
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+ u8 enable_counter; /* indicates HT mode */
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+ u8 stay_in_tbl; /* 1: disallow, 0: allow search for new mode */
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+ u8 search_better_tbl; /* 1: currently trying alternate mode */
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+ s32 last_tpt;
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+
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+ /* The following determine when to search for a new mode */
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+ u32 table_count_limit;
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+ u32 max_failure_limit; /* # failed frames before new search */
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+ u32 max_success_limit; /* # successful frames before new search */
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+ u32 table_count;
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+ u32 total_failed; /* total failed frames, any/all rates */
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+ u32 total_success; /* total successful frames, any/all rates */
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+ u64 flush_timer; /* time staying in mode before new search */
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+
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+ u8 action_counter; /* # mode-switch actions tried */
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+ u8 is_green;
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+ u8 is_dup;
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+ enum ieee80211_band band;
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+ u8 ibss_sta_added;
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+
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+ /* The following are bitmaps of rates; IWL_RATE_6M_MASK, etc. */
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+ u32 supp_rates;
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+ u16 active_legacy_rate;
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+ u16 active_siso_rate;
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+ u16 active_mimo2_rate;
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+ u16 active_mimo3_rate;
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+ u16 active_rate_basic;
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+ s8 max_rate_idx; /* Max rate set by user */
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+ u8 missed_rate_counter;
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+
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+ struct iwl_link_quality_cmd lq;
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+ struct iwl_scale_tbl_info lq_info[LQ_SIZE]; /* "active", "search" */
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+ struct iwl_traffic_load load[TID_MAX_LOAD_COUNT];
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+ u8 tx_agg_tid_en;
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+#ifdef CONFIG_MAC80211_DEBUGFS
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+ struct dentry *rs_sta_dbgfs_scale_table_file;
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+ struct dentry *rs_sta_dbgfs_stats_table_file;
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+ struct dentry *rs_sta_dbgfs_rate_scale_data_file;
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+ struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file;
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+ u32 dbg_fixed_rate;
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+#endif
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+ struct iwl_priv *drv;
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+
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+ /* used to be in sta_info */
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+ int last_txrate_idx;
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+ /* last tx rate_n_flags */
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+ u32 last_rate_n_flags;
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+ /* packets destined for this STA are aggregated */
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+ u8 is_agg;
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+};
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+
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static inline u8 num_of_ant(u8 mask)
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{
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return !!((mask) & ANT_A) +
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