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iwlwifi: mvm: rs: organize and cleanup consts 

Organize and cleanup the consts used by rs.
This is part of making some of these configurable.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Eyal Shapira 2014-12-17 15:38:58 +02:00 committed by Emmanuel Grumbach
parent c3f8d0a3af
commit 834437dab9
3 changed files with 79 additions and 97 deletions
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28
drivers/net/wireless/iwlwifi/mvm/constants.h
View File

@ -102,5 +102,33 @@
#define IWL_MVM_QUOTA_THRESHOLD 8
#define IWL_MVM_RS_RSSI_BASED_INIT_RATE 0
#define IWL_MVM_RS_DISABLE_MIMO 0
#define IWL_MVM_RS_NUM_TRY_BEFORE_ANT_TOGGLE 1
#define IWL_MVM_RS_LEGACY_RETRIES_PER_RATE 1
#define IWL_MVM_RS_HT_VHT_RETRIES_PER_RATE 2
#define IWL_MVM_RS_HT_VHT_RETRIES_PER_RATE_TW 1
#define IWL_MVM_RS_INITIAL_MIMO_NUM_RATES 3
#define IWL_MVM_RS_INITIAL_SISO_NUM_RATES 3
#define IWL_MVM_RS_INITIAL_LEGACY_NUM_RATES 16
#define IWL_MVM_RS_SECONDARY_LEGACY_NUM_RATES 16
#define IWL_MVM_RS_SECONDARY_SISO_NUM_RATES 3
#define IWL_MVM_RS_SECONDARY_SISO_RETRIES 1
#define IWL_MVM_RS_RATE_MIN_FAILURE_TH 3
#define IWL_MVM_RS_RATE_MIN_SUCCESS_TH 8
#define IWL_MVM_RS_STAY_IN_COLUMN_TIMEOUT 5 /* Seconds */
#define IWL_MVM_RS_IDLE_TIMEOUT 5 /* Seconds */
#define IWL_MVM_RS_MISSED_RATE_MAX 15
#define IWL_MVM_RS_LEGACY_FAILURE_LIMIT 160
#define IWL_MVM_RS_LEGACY_SUCCESS_LIMIT 480
#define IWL_MVM_RS_LEGACY_TABLE_COUNT 160
#define IWL_MVM_RS_NON_LEGACY_FAILURE_LIMIT 400
#define IWL_MVM_RS_NON_LEGACY_SUCCESS_LIMIT 4500
#define IWL_MVM_RS_NON_LEGACY_TABLE_COUNT 1500
#define IWL_MVM_RS_SR_FORCE_DECREASE 15 /* percent */
#define IWL_MVM_RS_SR_NO_DECREASE 85 /* percent */
#define IWL_MVM_RS_AGG_TIME_LIMIT 4000 /* 4 msecs. valid 100-8000 */
#define IWL_MVM_RS_AGG_DISABLE_START 3
#define IWL_MVM_RS_TPC_SR_FORCE_INCREASE 75 /* percent */
#define IWL_MVM_RS_TPC_SR_NO_INCREASE 85 /* percent */
#define IWL_MVM_RS_TPC_TX_POWER_STEP 3
#endif /* __MVM_CONSTANTS_H */

109
drivers/net/wireless/iwlwifi/mvm/rs.c
View File

@ -42,25 +42,12 @@
#define RS_NAME "iwl-mvm-rs"
#define NUM_TRY_BEFORE_ANT_TOGGLE 1
#define RS_LEGACY_RETRIES_PER_RATE 1
#define RS_HT_VHT_RETRIES_PER_RATE 2
#define RS_HT_VHT_RETRIES_PER_RATE_TW 1
#define RS_INITIAL_MIMO_NUM_RATES 3
#define RS_INITIAL_SISO_NUM_RATES 3
#define RS_INITIAL_LEGACY_NUM_RATES LINK_QUAL_MAX_RETRY_NUM
#define RS_SECONDARY_LEGACY_NUM_RATES LINK_QUAL_MAX_RETRY_NUM
#define RS_SECONDARY_SISO_NUM_RATES 3
#define RS_SECONDARY_SISO_RETRIES 1
#define IWL_RATE_MAX_WINDOW 62 /* # tx in history window */
#define IWL_RATE_MIN_FAILURE_TH 3 /* min failures to calc tpt */
#define IWL_RATE_MIN_SUCCESS_TH 8 /* min successes to calc tpt */
/* max allowed rate miss before sync LQ cmd */
#define IWL_MISSED_RATE_MAX 15
#define RS_STAY_IN_COLUMN_TIMEOUT (5*HZ)
#define RS_IDLE_TIMEOUT (5*HZ)
/* Calculations of success ratio are done in fixed point where 12800 is 100%.
* Use this macro when dealing with thresholds consts set as a percentage
*/
#define RS_PERCENT(x) (128 * x)
static u8 rs_ht_to_legacy[] = {
[IWL_RATE_MCS_0_INDEX] = IWL_RATE_6M_INDEX,
@ -613,7 +600,8 @@ static s32 get_expected_tpt(struct iwl_scale_tbl_info *tbl, int rs_index)
* at this rate. window->data contains the bitmask of successful
* packets.
*/
static int _rs_collect_tx_data(struct iwl_scale_tbl_info *tbl,
static int _rs_collect_tx_data(struct iwl_mvm *mvm,
struct iwl_scale_tbl_info *tbl,
int scale_index, int attempts, int successes,
struct iwl_rate_scale_data *window)
{
@ -668,8 +656,8 @@ static int _rs_collect_tx_data(struct iwl_scale_tbl_info *tbl,
fail_count = window->counter - window->success_counter;
/* Calculate average throughput, if we have enough history. */
if ((fail_count >= IWL_RATE_MIN_FAILURE_TH) ||
(window->success_counter >= IWL_RATE_MIN_SUCCESS_TH))
if ((fail_count >= IWL_MVM_RS_RATE_MIN_FAILURE_TH) ||
(window->success_counter >= IWL_MVM_RS_RATE_MIN_SUCCESS_TH))
window->average_tpt = (window->success_ratio * tpt + 64) / 128;
else
window->average_tpt = IWL_INVALID_VALUE;
@ -677,7 +665,8 @@ static int _rs_collect_tx_data(struct iwl_scale_tbl_info *tbl,
return 0;
}
static int rs_collect_tx_data(struct iwl_lq_sta *lq_sta,
static int rs_collect_tx_data(struct iwl_mvm *mvm,
struct iwl_lq_sta *lq_sta,
struct iwl_scale_tbl_info *tbl,
int scale_index, int attempts, int successes,
u8 reduced_txp)
@ -698,7 +687,7 @@ static int rs_collect_tx_data(struct iwl_lq_sta *lq_sta,
/* Select window for current tx bit rate */
window = &(tbl->win[scale_index]);
ret = _rs_collect_tx_data(tbl, scale_index, attempts, successes,
ret = _rs_collect_tx_data(mvm, tbl, scale_index, attempts, successes,
window);
if (ret)
return ret;
@ -707,7 +696,7 @@ static int rs_collect_tx_data(struct iwl_lq_sta *lq_sta,
return -EINVAL;
window = &tbl->tpc_win[reduced_txp];
return _rs_collect_tx_data(tbl, scale_index, attempts, successes,
return _rs_collect_tx_data(mvm, tbl, scale_index, attempts, successes,
window);
}
@ -1125,7 +1114,8 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
}
if (time_after(jiffies,
(unsigned long)(lq_sta->last_tx + RS_IDLE_TIMEOUT))) {
(unsigned long)(lq_sta->last_tx +
(IWL_MVM_RS_IDLE_TIMEOUT * HZ)))) {
int t;
IWL_DEBUG_RATE(mvm, "Tx idle for too long. reinit rs\n");
@ -1158,7 +1148,7 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
* ... driver.
*/
lq_sta->missed_rate_counter++;
if (lq_sta->missed_rate_counter > IWL_MISSED_RATE_MAX) {
if (lq_sta->missed_rate_counter > IWL_MVM_RS_MISSED_RATE_MAX) {
lq_sta->missed_rate_counter = 0;
IWL_DEBUG_RATE(mvm,
"Too many rates mismatch. Send sync LQ. rs_state %d\n",
@ -1213,7 +1203,7 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
ucode_rate = le32_to_cpu(table->rs_table[0]);
rs_rate_from_ucode_rate(ucode_rate, info->band, &rate);
rs_collect_tx_data(lq_sta, curr_tbl, rate.index,
rs_collect_tx_data(mvm, lq_sta, curr_tbl, rate.index,
info->status.ampdu_len,
info->status.ampdu_ack_len,
reduced_txp);
@ -1249,7 +1239,7 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
else
continue;
rs_collect_tx_data(lq_sta, tmp_tbl, rate.index, 1,
rs_collect_tx_data(mvm, lq_sta, tmp_tbl, rate.index, 1,
i < retries ? 0 : legacy_success,
reduced_txp);
}
@ -1303,13 +1293,13 @@ static void rs_set_stay_in_table(struct iwl_mvm *mvm, u8 is_legacy,
IWL_DEBUG_RATE(mvm, "Moving to RS_STATE_STAY_IN_COLUMN\n");
lq_sta->rs_state = RS_STATE_STAY_IN_COLUMN;
if (is_legacy) {
lq_sta->table_count_limit = IWL_LEGACY_TABLE_COUNT;
lq_sta->max_failure_limit = IWL_LEGACY_FAILURE_LIMIT;
lq_sta->max_success_limit = IWL_LEGACY_SUCCESS_LIMIT;
lq_sta->table_count_limit = IWL_MVM_RS_LEGACY_TABLE_COUNT;
lq_sta->max_failure_limit = IWL_MVM_RS_LEGACY_FAILURE_LIMIT;
lq_sta->max_success_limit = IWL_MVM_RS_LEGACY_SUCCESS_LIMIT;
} else {
lq_sta->table_count_limit = IWL_NONE_LEGACY_TABLE_COUNT;
lq_sta->max_failure_limit = IWL_NONE_LEGACY_FAILURE_LIMIT;
lq_sta->max_success_limit = IWL_NONE_LEGACY_SUCCESS_LIMIT;
lq_sta->table_count_limit = IWL_MVM_RS_NON_LEGACY_TABLE_COUNT;
lq_sta->max_failure_limit = IWL_MVM_RS_NON_LEGACY_FAILURE_LIMIT;
lq_sta->max_success_limit = IWL_MVM_RS_NON_LEGACY_SUCCESS_LIMIT;
}
lq_sta->table_count = 0;
lq_sta->total_failed = 0;
@ -1427,7 +1417,7 @@ static s32 rs_get_best_rate(struct iwl_mvm *mvm,
u32 target_tpt;
int rate_idx;
if (success_ratio > RS_SR_NO_DECREASE) {
if (success_ratio > IWL_MVM_RS_SR_NO_DECREASE) {
target_tpt = 100 * expected_current_tpt;
IWL_DEBUG_RATE(mvm,
"SR %d high. Find rate exceeding EXPECTED_CURRENT %d\n",
@ -1495,7 +1485,7 @@ static void rs_stay_in_table(struct iwl_lq_sta *lq_sta, bool force_search)
flush_interval_passed =
time_after(jiffies,
(unsigned long)(lq_sta->flush_timer +
RS_STAY_IN_COLUMN_TIMEOUT));
(IWL_MVM_RS_STAY_IN_COLUMN_TIMEOUT * HZ)));
/*
* Check if we should allow search for new modulation mode.
@ -1735,7 +1725,8 @@ static enum rs_action rs_get_rate_action(struct iwl_mvm *mvm,
{
enum rs_action action = RS_ACTION_STAY;
if ((sr <= RS_SR_FORCE_DECREASE) || (current_tpt == 0)) {
if ((sr <= RS_PERCENT(IWL_MVM_RS_SR_FORCE_DECREASE)) ||
(current_tpt == 0)) {
IWL_DEBUG_RATE(mvm,
"Decrease rate because of low SR\n");
return RS_ACTION_DOWNSCALE;
@ -1794,7 +1785,7 @@ static enum rs_action rs_get_rate_action(struct iwl_mvm *mvm,
out:
if ((action == RS_ACTION_DOWNSCALE) && (low != IWL_RATE_INVALID)) {
if (sr >= RS_SR_NO_DECREASE) {
if (sr >= RS_PERCENT(IWL_MVM_RS_SR_NO_DECREASE)) {
IWL_DEBUG_RATE(mvm,
"SR is above NO DECREASE. Avoid downscale\n");
action = RS_ACTION_STAY;
@ -1836,11 +1827,11 @@ static bool rs_stbc_allow(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
static void rs_get_adjacent_txp(struct iwl_mvm *mvm, int index,
int *weaker, int *stronger)
{
*weaker = index + TPC_TX_POWER_STEP;
*weaker = index + IWL_MVM_RS_TPC_TX_POWER_STEP;
if (*weaker > TPC_MAX_REDUCTION)
*weaker = TPC_INVALID;
*stronger = index - TPC_TX_POWER_STEP;
*stronger = index - IWL_MVM_RS_TPC_TX_POWER_STEP;
if (*stronger < 0)
*stronger = TPC_INVALID;
}
@ -1896,7 +1887,8 @@ static enum tpc_action rs_get_tpc_action(struct iwl_mvm *mvm,
}
/* Too many failures, increase txp */
if (sr <= TPC_SR_FORCE_INCREASE || current_tpt == 0) {
if (sr <= RS_PERCENT(IWL_MVM_RS_TPC_SR_FORCE_INCREASE) ||
current_tpt == 0) {
IWL_DEBUG_RATE(mvm, "increase txp because of weak SR\n");
return TPC_ACTION_NO_RESTIRCTION;
}
@ -1919,7 +1911,8 @@ static enum tpc_action rs_get_tpc_action(struct iwl_mvm *mvm,
}
/* next, increase if needed */
if (sr < TPC_SR_NO_INCREASE && strong != TPC_INVALID) {
if (sr < RS_PERCENT(IWL_MVM_RS_TPC_SR_NO_INCREASE) &&
strong != TPC_INVALID) {
if (weak_tpt == IWL_INVALID_VALUE &&
strong_tpt != IWL_INVALID_VALUE &&
current_tpt < strong_tpt) {
@ -2117,8 +2110,8 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
* in current association (use new rate found above).
*/
fail_count = window->counter - window->success_counter;
if ((fail_count < IWL_RATE_MIN_FAILURE_TH) &&
(window->success_counter < IWL_RATE_MIN_SUCCESS_TH)) {
if ((fail_count < IWL_MVM_RS_RATE_MIN_FAILURE_TH) &&
(window->success_counter < IWL_MVM_RS_RATE_MIN_SUCCESS_TH)) {
IWL_DEBUG_RATE(mvm,
"(%s: %d): Test Window: succ %d total %d\n",
rs_pretty_lq_type(rate->type),
@ -2720,7 +2713,7 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
* previous packets? Need to have IEEE 802.1X auth succeed immediately
* after assoc.. */
lq_sta->missed_rate_counter = IWL_MISSED_RATE_MAX;
lq_sta->missed_rate_counter = IWL_MVM_RS_MISSED_RATE_MAX;
lq_sta->band = sband->band;
/*
* active legacy rates as per supported rates bitmap
@ -2925,14 +2918,14 @@ static void rs_build_rates_table(struct iwl_mvm *mvm,
rate.stbc = rs_stbc_allow(mvm, sta, lq_sta);
if (is_siso(&rate)) {
num_rates = RS_INITIAL_SISO_NUM_RATES;
num_retries = RS_HT_VHT_RETRIES_PER_RATE;
num_rates = IWL_MVM_RS_INITIAL_SISO_NUM_RATES;
num_retries = IWL_MVM_RS_HT_VHT_RETRIES_PER_RATE;
} else if (is_mimo(&rate)) {
num_rates = RS_INITIAL_MIMO_NUM_RATES;
num_retries = RS_HT_VHT_RETRIES_PER_RATE;
num_rates = IWL_MVM_RS_INITIAL_MIMO_NUM_RATES;
num_retries = IWL_MVM_RS_HT_VHT_RETRIES_PER_RATE;
} else {
num_rates = RS_INITIAL_LEGACY_NUM_RATES;
num_retries = RS_LEGACY_RETRIES_PER_RATE;
num_rates = IWL_MVM_RS_INITIAL_LEGACY_NUM_RATES;
num_retries = IWL_MVM_RS_LEGACY_RETRIES_PER_RATE;
toggle_ant = true;
}
@ -2943,12 +2936,12 @@ static void rs_build_rates_table(struct iwl_mvm *mvm,
rs_get_lower_rate_down_column(lq_sta, &rate);
if (is_siso(&rate)) {
num_rates = RS_SECONDARY_SISO_NUM_RATES;
num_retries = RS_SECONDARY_SISO_RETRIES;
num_rates = IWL_MVM_RS_SECONDARY_SISO_NUM_RATES;
num_retries = IWL_MVM_RS_SECONDARY_SISO_RETRIES;
lq_cmd->mimo_delim = index;
} else if (is_legacy(&rate)) {
num_rates = RS_SECONDARY_LEGACY_NUM_RATES;
num_retries = RS_LEGACY_RETRIES_PER_RATE;
num_rates = IWL_MVM_RS_SECONDARY_LEGACY_NUM_RATES;
num_retries = IWL_MVM_RS_LEGACY_RETRIES_PER_RATE;
} else {
WARN_ON_ONCE(1);
}
@ -2961,8 +2954,8 @@ static void rs_build_rates_table(struct iwl_mvm *mvm,
rs_get_lower_rate_down_column(lq_sta, &rate);
num_rates = RS_SECONDARY_LEGACY_NUM_RATES;
num_retries = RS_LEGACY_RETRIES_PER_RATE;
num_rates = IWL_MVM_RS_SECONDARY_LEGACY_NUM_RATES;
num_retries = IWL_MVM_RS_LEGACY_RETRIES_PER_RATE;
rs_fill_rates_for_column(mvm, lq_sta, &rate, lq_cmd->rs_table, &index,
num_rates, num_retries, valid_tx_ant,
@ -2979,9 +2972,9 @@ static void rs_fill_lq_cmd(struct iwl_mvm *mvm,
struct iwl_mvm_sta *mvmsta;
struct iwl_mvm_vif *mvmvif;
lq_cmd->agg_disable_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
lq_cmd->agg_disable_start_th = IWL_MVM_RS_AGG_DISABLE_START;
lq_cmd->agg_time_limit =
cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
cpu_to_le16(IWL_MVM_RS_AGG_TIME_LIMIT);
#ifdef CONFIG_MAC80211_DEBUGFS
if (lq_sta->pers.dbg_fixed_rate) {

39
drivers/net/wireless/iwlwifi/mvm/rs.h
View File

@ -137,42 +137,10 @@ enum {
#define IWL_INVALID_VALUE -1
#define IWL_MIN_RSSI_VAL -100
#define IWL_MAX_RSSI_VAL 0
/* These values specify how many Tx frame attempts before
* searching for a new modulation mode */
#define IWL_LEGACY_FAILURE_LIMIT 160
#define IWL_LEGACY_SUCCESS_LIMIT 480
#define IWL_LEGACY_TABLE_COUNT 160
#define IWL_NONE_LEGACY_FAILURE_LIMIT 400
#define IWL_NONE_LEGACY_SUCCESS_LIMIT 4500
#define IWL_NONE_LEGACY_TABLE_COUNT 1500
/* Success ratio (ACKed / attempted tx frames) values (perfect is 128 * 100) */
#define IWL_RS_GOOD_RATIO 12800 /* 100% */
#define IWL_RATE_SCALE_SWITCH 10880 /* 85% */
#define IWL_RATE_HIGH_TH 10880 /* 85% */
#define IWL_RATE_INCREASE_TH 6400 /* 50% */
#define RS_SR_FORCE_DECREASE 1920 /* 15% */
#define RS_SR_NO_DECREASE 10880 /* 85% */
#define TPC_SR_FORCE_INCREASE 9600 /* 75% */
#define TPC_SR_NO_INCREASE 10880 /* 85% */
#define TPC_TX_POWER_STEP 3
#define TPC_MAX_REDUCTION 15
#define TPC_NO_REDUCTION 0
#define TPC_INVALID 0xff
#define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) /* 4 milliseconds */
#define LINK_QUAL_AGG_TIME_LIMIT_MAX (8000)
#define LINK_QUAL_AGG_TIME_LIMIT_MIN (100)
#define LINK_QUAL_AGG_DISABLE_START_DEF (3)
#define LINK_QUAL_AGG_DISABLE_START_MAX (255)
#define LINK_QUAL_AGG_DISABLE_START_MIN (0)
#define LINK_QUAL_AGG_FRAME_LIMIT_DEF (63)
#define LINK_QUAL_AGG_FRAME_LIMIT_MAX (63)
#define LINK_QUAL_AGG_FRAME_LIMIT_MIN (0)
@ -181,14 +149,7 @@ enum {
/* load per tid defines for A-MPDU activation */
#define IWL_AGG_TPT_THREHOLD 0
#define IWL_AGG_LOAD_THRESHOLD 10
#define IWL_AGG_ALL_TID 0xff
#define TID_QUEUE_CELL_SPACING 50 /*mS */
#define TID_QUEUE_MAX_SIZE 20
#define TID_ROUND_VALUE 5 /* mS */
#define TID_MAX_TIME_DIFF ((TID_QUEUE_MAX_SIZE - 1) * TID_QUEUE_CELL_SPACING)
#define TIME_WRAP_AROUND(x, y) (((y) > (x)) ? (y) - (x) : (0-(x)) + (y))
enum iwl_table_type {
LQ_NONE,