diff options
Diffstat (limited to 'net/mac80211/rc80211_minstrel_ht.h')
| -rw-r--r-- | net/mac80211/rc80211_minstrel_ht.h | 96 |
1 files changed, 81 insertions, 15 deletions
diff --git a/net/mac80211/rc80211_minstrel_ht.h b/net/mac80211/rc80211_minstrel_ht.h index 53ea3c29debf..7d6d0b720f6d 100644 --- a/net/mac80211/rc80211_minstrel_ht.h +++ b/net/mac80211/rc80211_minstrel_ht.h @@ -6,6 +6,33 @@ #ifndef __RC_MINSTREL_HT_H #define __RC_MINSTREL_HT_H +/* number of highest throughput rates to consider*/ +#define MAX_THR_RATES 4 +#define SAMPLE_COLUMNS 10 /* number of columns in sample table */ + +/* scaled fraction values */ +#define MINSTREL_SCALE 12 +#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div) +#define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE) + +#define EWMA_LEVEL 96 /* ewma weighting factor [/EWMA_DIV] */ +#define EWMA_DIV 128 + +/* + * Coefficients for moving average with noise filter (period=16), + * scaled by 10 bits + * + * a1 = exp(-pi * sqrt(2) / period) + * coeff2 = 2 * a1 * cos(sqrt(2) * 2 * pi / period) + * coeff3 = -sqr(a1) + * coeff1 = 1 - coeff2 - coeff3 + */ +#define MINSTREL_AVG_COEFF1 (MINSTREL_FRAC(1, 1) - \ + MINSTREL_AVG_COEFF2 - \ + MINSTREL_AVG_COEFF3) +#define MINSTREL_AVG_COEFF2 0x00001499 +#define MINSTREL_AVG_COEFF3 -0x0000092e + /* * The number of streams can be changed to 2 to reduce code * size and memory footprint. @@ -18,17 +45,43 @@ MINSTREL_HT_STREAM_GROUPS) #define MINSTREL_VHT_GROUPS_NB (MINSTREL_MAX_STREAMS * \ MINSTREL_VHT_STREAM_GROUPS) -#define MINSTREL_CCK_GROUPS_NB 1 +#define MINSTREL_LEGACY_GROUPS_NB 2 #define MINSTREL_GROUPS_NB (MINSTREL_HT_GROUPS_NB + \ MINSTREL_VHT_GROUPS_NB + \ - MINSTREL_CCK_GROUPS_NB) + MINSTREL_LEGACY_GROUPS_NB) #define MINSTREL_HT_GROUP_0 0 #define MINSTREL_CCK_GROUP (MINSTREL_HT_GROUP_0 + MINSTREL_HT_GROUPS_NB) -#define MINSTREL_VHT_GROUP_0 (MINSTREL_CCK_GROUP + 1) +#define MINSTREL_OFDM_GROUP (MINSTREL_CCK_GROUP + 1) +#define MINSTREL_VHT_GROUP_0 (MINSTREL_OFDM_GROUP + 1) #define MCS_GROUP_RATES 10 +struct minstrel_priv { + struct ieee80211_hw *hw; + bool has_mrr; + u32 sample_switch; + unsigned int cw_min; + unsigned int cw_max; + unsigned int max_retry; + unsigned int segment_size; + unsigned int update_interval; + + u8 cck_rates[4]; + u8 ofdm_rates[NUM_NL80211_BANDS][8]; + +#ifdef CONFIG_MAC80211_DEBUGFS + /* + * enable fixed rate processing per RC + * - write static index to debugfs:ieee80211/phyX/rc/fixed_rate_idx + * - write -1 to enable RC processing again + * - setting will be applied on next update + */ + u32 fixed_rate_idx; +#endif +}; + + struct mcs_group { u16 flags; u8 streams; @@ -37,8 +90,30 @@ struct mcs_group { u16 duration[MCS_GROUP_RATES]; }; +extern const s16 minstrel_cck_bitrates[4]; +extern const s16 minstrel_ofdm_bitrates[8]; extern const struct mcs_group minstrel_mcs_groups[]; +struct minstrel_rate_stats { + /* current / last sampling period attempts/success counters */ + u16 attempts, last_attempts; + u16 success, last_success; + + /* total attempts/success counters */ + u32 att_hist, succ_hist; + + /* prob_avg - moving average of prob */ + u16 prob_avg; + u16 prob_avg_1; + + /* maximum retry counts */ + u8 retry_count; + u8 retry_count_rtscts; + + u8 sample_skipped; + bool retry_updated; +}; + struct minstrel_mcs_group_data { u8 index; u8 column; @@ -77,6 +152,8 @@ struct minstrel_ht_sta { /* overhead time in usec for each frame */ unsigned int overhead; unsigned int overhead_rtscts; + unsigned int overhead_legacy; + unsigned int overhead_legacy_rtscts; unsigned int total_packets_last; unsigned int total_packets_cur; @@ -97,8 +174,7 @@ struct minstrel_ht_sta { /* current MCS group to be sampled */ u8 sample_group; - u8 cck_supported; - u8 cck_supported_short; + u8 band; /* Bitfield of supported MCS rates of all groups */ u16 supported[MINSTREL_GROUPS_NB]; @@ -107,16 +183,6 @@ struct minstrel_ht_sta { struct minstrel_mcs_group_data groups[MINSTREL_GROUPS_NB]; }; -struct minstrel_ht_sta_priv { - union { - struct minstrel_ht_sta ht; - struct minstrel_sta_info legacy; - }; - void *ratelist; - void *sample_table; - bool is_ht; -}; - void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir); int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate, int prob_avg); |