#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,
if (sta->smps_mode == IEEE80211_SMPS_STATIC)
return false;
- if (num_of_ant(mvm->fw->valid_tx_ant) < 2)
+ if (num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) < 2)
return false;
if (!iwl_mvm_bt_coex_is_mimo_allowed(mvm, sta))
* 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)
{
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;
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)
/* 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;
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);
}
}
if (num_of_ant(rate->ant) > 1)
- rate->ant = first_antenna(mvm->fw->valid_tx_ant);
+ rate->ant = first_antenna(iwl_mvm_get_valid_tx_ant(mvm));
/* Relevant in both switching to SISO or Legacy */
rate->sgi = false;
}
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");
* ... 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",
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);
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);
}
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;
lq_sta->visited_columns = 0;
}
+static inline int rs_get_max_rate_from_mask(unsigned long rate_mask)
+{
+ if (rate_mask)
+ return find_last_bit(&rate_mask, BITS_PER_LONG);
+ return IWL_RATE_INVALID;
+}
+
static int rs_get_max_allowed_rate(struct iwl_lq_sta *lq_sta,
const struct rs_tx_column *column)
{
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",
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.
const struct rs_tx_column *curr_col = &rs_tx_columns[tbl->column];
const struct rs_tx_column *next_col;
allow_column_func_t allow_func;
- u8 valid_ants = mvm->fw->valid_tx_ant;
+ u8 valid_ants = iwl_mvm_get_valid_tx_ant(mvm);
const u16 *expected_tpt_tbl;
u16 tpt, max_expected_tpt;
continue;
max_rate = rs_get_max_allowed_rate(lq_sta, next_col);
- if (WARN_ON_ONCE(max_rate == IWL_RATE_INVALID))
+ if (max_rate == IWL_RATE_INVALID) {
+ IWL_DEBUG_RATE(mvm,
+ "Skip column %d: no rate is allowed in this column\n",
+ next_col_id);
continue;
+ }
max_expected_tpt = expected_tpt_tbl[max_rate];
if (tpt >= max_expected_tpt) {
{
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;
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;
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;
}
}
/* 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;
}
}
/* 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) {
struct iwl_lq_sta *lq_sta,
struct iwl_scale_tbl_info *tbl)
{
- struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
+ struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
struct ieee80211_vif *vif = mvm_sta->vif;
struct ieee80211_chanctx_conf *chanctx_conf;
enum ieee80211_band band;
u16 high_low;
s32 sr;
u8 prev_agg = lq_sta->is_agg;
- struct iwl_mvm_sta *sta_priv = (void *)sta->drv_priv;
+ struct iwl_mvm_sta *sta_priv = iwl_mvm_sta_from_mac80211(sta);
struct iwl_mvm_tid_data *tid_data;
struct rs_rate *rate;
* 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),
int i, nentries;
s8 best_rssi = S8_MIN;
u8 best_ant = ANT_NONE;
- u8 valid_tx_ant = mvm->fw->valid_tx_ant;
+ u8 valid_tx_ant = iwl_mvm_get_valid_tx_ant(mvm);
const struct rs_init_rate_info *initial_rates;
for (i = 0; i < ARRAY_SIZE(lq_sta->pers.chain_signal); i++) {
static void *rs_alloc_sta(void *mvm_rate, struct ieee80211_sta *sta,
gfp_t gfp)
{
- struct iwl_mvm_sta *sta_priv = (struct iwl_mvm_sta *)sta->drv_priv;
+ struct iwl_mvm_sta *sta_priv = iwl_mvm_sta_from_mac80211(sta);
struct iwl_op_mode *op_mode = (struct iwl_op_mode *)mvm_rate;
struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
struct iwl_lq_sta *lq_sta = &sta_priv->lq_sta;
struct ieee80211_hw *hw = mvm->hw;
struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
- struct iwl_mvm_sta *sta_priv;
- struct iwl_lq_sta *lq_sta;
+ struct iwl_mvm_sta *sta_priv = iwl_mvm_sta_from_mac80211(sta);
+ struct iwl_lq_sta *lq_sta = &sta_priv->lq_sta;
struct ieee80211_supported_band *sband;
unsigned long supp; /* must be unsigned long for for_each_set_bit */
- sta_priv = (struct iwl_mvm_sta *)sta->drv_priv;
- lq_sta = &sta_priv->lq_sta;
-
/* clear all non-persistent lq data */
memset(lq_sta, 0, offsetof(typeof(*lq_sta), pers));
* 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
lq_sta->ldpc = true;
if (mvm->cfg->ht_params->stbc &&
- (num_of_ant(mvm->fw->valid_tx_ant) > 1) &&
+ (num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) > 1) &&
(ht_cap->cap & IEEE80211_HT_CAP_RX_STBC))
lq_sta->stbc = true;
} else {
lq_sta->ldpc = true;
if (mvm->cfg->ht_params->stbc &&
- (num_of_ant(mvm->fw->valid_tx_ant) > 1) &&
+ (num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) > 1) &&
(vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK))
lq_sta->stbc = true;
}
if (IWL_MVM_RS_DISABLE_MIMO)
lq_sta->active_mimo2_rate = 0;
- lq_sta->max_legacy_rate_idx = find_last_bit(&lq_sta->active_legacy_rate,
- BITS_PER_LONG);
- lq_sta->max_siso_rate_idx = find_last_bit(&lq_sta->active_siso_rate,
- BITS_PER_LONG);
- lq_sta->max_mimo2_rate_idx = find_last_bit(&lq_sta->active_mimo2_rate,
- BITS_PER_LONG);
+ lq_sta->max_legacy_rate_idx =
+ rs_get_max_rate_from_mask(lq_sta->active_legacy_rate);
+ lq_sta->max_siso_rate_idx =
+ rs_get_max_rate_from_mask(lq_sta->active_siso_rate);
+ lq_sta->max_mimo2_rate_idx =
+ rs_get_max_rate_from_mask(lq_sta->active_mimo2_rate);
IWL_DEBUG_RATE(mvm,
"RATE MASK: LEGACY=%lX SISO=%lX MIMO2=%lX VHT=%d LDPC=%d STBC%d\n",
/* These values will be overridden later */
lq_sta->lq.single_stream_ant_msk =
- first_antenna(mvm->fw->valid_tx_ant);
+ first_antenna(iwl_mvm_get_valid_tx_ant(mvm));
lq_sta->lq.dual_stream_ant_msk = ANT_AB;
/* as default allow aggregation for all tids */
memcpy(&rate, initial_rate, sizeof(rate));
- valid_tx_ant = mvm->fw->valid_tx_ant;
+ valid_tx_ant = iwl_mvm_get_valid_tx_ant(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;
}
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);
}
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,
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) {
desc += sprintf(buff+desc, "fixed rate 0x%X\n",
lq_sta->pers.dbg_fixed_rate);
desc += sprintf(buff+desc, "valid_tx_ant %s%s%s\n",
- (mvm->fw->valid_tx_ant & ANT_A) ? "ANT_A," : "",
- (mvm->fw->valid_tx_ant & ANT_B) ? "ANT_B," : "",
- (mvm->fw->valid_tx_ant & ANT_C) ? "ANT_C" : "");
+ (iwl_mvm_get_valid_tx_ant(mvm) & ANT_A) ? "ANT_A," : "",
+ (iwl_mvm_get_valid_tx_ant(mvm) & ANT_B) ? "ANT_B," : "",
+ (iwl_mvm_get_valid_tx_ant(mvm) & ANT_C) ? "ANT_C" : "");
desc += sprintf(buff+desc, "lq type %s\n",
(is_legacy(rate)) ? "legacy" :
is_vht(rate) ? "VHT" : "HT");