iwlwifi: mvm: remove GF support in rs
mvm doesn't support HT GF so drop all relevant code in rs. Signed-off-by: Eyal Shapira <eyal@wizery.com> Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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6a524f487c
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@ -449,8 +449,7 @@ static int rs_collect_tx_data(struct iwl_scale_tbl_info *tbl,
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*/
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/* FIXME:RS:remove this function and put the flags statically in the table */
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static u32 rate_n_flags_from_tbl(struct iwl_mvm *mvm,
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struct iwl_scale_tbl_info *tbl,
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int index, u8 use_green)
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struct iwl_scale_tbl_info *tbl, int index)
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{
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u32 rate_n_flags = 0;
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@ -498,14 +497,6 @@ static u32 rate_n_flags_from_tbl(struct iwl_mvm *mvm,
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if (tbl->is_SGI)
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rate_n_flags |= RATE_MCS_SGI_MSK;
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/* TODO: remove GF completely ? */
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if (use_green) {
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rate_n_flags |= RATE_HT_MCS_GF_MSK;
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if (is_ht_siso(tbl->lq_type) && tbl->is_SGI) {
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rate_n_flags &= ~RATE_MCS_SGI_MSK;
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IWL_ERR(mvm, "GF was set with SGI:SISO\n");
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}
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}
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return rate_n_flags;
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}
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@ -617,22 +608,6 @@ static int rs_toggle_antenna(u32 valid_ant, u32 *rate_n_flags,
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return 1;
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}
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/**
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* Green-field mode is valid if the station supports it and
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* there are no non-GF stations present in the BSS.
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*/
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static bool rs_use_green(struct ieee80211_sta *sta)
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{
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/*
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* There's a bug somewhere in this code that causes the
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* scaling to get stuck because GF+SGI can't be combined
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* in SISO rates. Until we find that bug, disable GF, it
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* has only limited benefit and we still interoperate with
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* GF APs since we can always receive GF transmissions.
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*/
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return false;
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}
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/**
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* rs_get_supported_rates - get the available rates
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*
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@ -719,7 +694,6 @@ static u32 rs_get_lower_rate(struct iwl_lq_sta *lq_sta,
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u16 rate_mask;
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u16 high_low;
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u8 switch_to_legacy = 0;
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u8 is_green = lq_sta->is_green;
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struct iwl_mvm *mvm = lq_sta->drv;
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/* check if we need to switch from HT to legacy rates.
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@ -768,7 +742,7 @@ static u32 rs_get_lower_rate(struct iwl_lq_sta *lq_sta,
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low = scale_index;
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out:
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return rate_n_flags_from_tbl(lq_sta->drv, tbl, low, is_green);
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return rate_n_flags_from_tbl(lq_sta->drv, tbl, low);
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}
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/*
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@ -1246,7 +1220,6 @@ static int rs_switch_to_mimo2(struct iwl_mvm *mvm,
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{
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u16 rate_mask;
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s32 rate;
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s8 is_green = lq_sta->is_green;
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if (!sta->ht_cap.ht_supported)
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return -1;
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@ -1277,10 +1250,10 @@ static int rs_switch_to_mimo2(struct iwl_mvm *mvm,
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rate, rate_mask);
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return -1;
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}
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tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, rate, is_green);
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tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, rate);
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IWL_DEBUG_RATE(mvm, "LQ: Switch to new mcs %X index is green %X\n",
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tbl->current_rate, is_green);
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IWL_DEBUG_RATE(mvm, "LQ: Switch to new mcs %X index\n",
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tbl->current_rate);
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return 0;
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}
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@ -1293,7 +1266,6 @@ static int rs_switch_to_siso(struct iwl_mvm *mvm,
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struct iwl_scale_tbl_info *tbl, int index)
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{
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u16 rate_mask;
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u8 is_green = lq_sta->is_green;
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s32 rate;
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if (!sta->ht_cap.ht_supported)
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@ -1306,9 +1278,6 @@ static int rs_switch_to_siso(struct iwl_mvm *mvm,
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tbl->max_search = IWL_MAX_SEARCH;
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rate_mask = lq_sta->active_siso_rate;
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if (is_green)
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tbl->is_SGI = 0; /*11n spec: no SGI in SISO+Greenfield*/
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rs_set_bw_from_sta(tbl, sta);
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rs_set_expected_tpt_table(lq_sta, tbl);
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rate = rs_get_best_rate(mvm, lq_sta, tbl, rate_mask, index);
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@ -1320,9 +1289,9 @@ static int rs_switch_to_siso(struct iwl_mvm *mvm,
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rate, rate_mask);
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return -1;
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}
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tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, rate, is_green);
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IWL_DEBUG_RATE(mvm, "LQ: Switch to new mcs %X index is green %X\n",
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tbl->current_rate, is_green);
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tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, rate);
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IWL_DEBUG_RATE(mvm, "LQ: Switch to new mcs %X index\n",
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tbl->current_rate);
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return 0;
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}
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@ -1431,7 +1400,6 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
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struct iwl_lq_sta *lq_sta,
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struct ieee80211_sta *sta, int index)
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{
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u8 is_green = lq_sta->is_green;
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struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
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struct iwl_scale_tbl_info *search_tbl =
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&(lq_sta->lq_info[(1 - lq_sta->active_tbl)]);
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@ -1513,13 +1481,6 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
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IWL_DEBUG_RATE(mvm, "LQ: SISO toggle SGI/NGI\n");
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memcpy(search_tbl, tbl, sz);
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if (is_green) {
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if (!tbl->is_SGI)
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break;
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else
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IWL_ERR(mvm,
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"SGI was set in GF+SISO\n");
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}
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search_tbl->is_SGI = !tbl->is_SGI;
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rs_set_expected_tpt_table(lq_sta, search_tbl);
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if (tbl->is_SGI) {
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@ -1528,8 +1489,7 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
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break;
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}
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search_tbl->current_rate =
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rate_n_flags_from_tbl(mvm, search_tbl,
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index, is_green);
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rate_n_flags_from_tbl(mvm, search_tbl, index);
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update_search_tbl_counter = 1;
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goto out;
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default:
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@ -1559,7 +1519,6 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
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struct iwl_lq_sta *lq_sta,
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struct ieee80211_sta *sta, int index)
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{
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s8 is_green = lq_sta->is_green;
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struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
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struct iwl_scale_tbl_info *search_tbl =
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&(lq_sta->lq_info[(1 - lq_sta->active_tbl)]);
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@ -1640,8 +1599,7 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
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break;
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}
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search_tbl->current_rate =
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rate_n_flags_from_tbl(mvm, search_tbl,
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index, is_green);
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rate_n_flags_from_tbl(mvm, search_tbl, index);
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update_search_tbl_counter = 1;
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goto out;
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default:
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@ -1752,12 +1710,12 @@ static void rs_stay_in_table(struct iwl_lq_sta *lq_sta, bool force_search)
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static void rs_update_rate_tbl(struct iwl_mvm *mvm,
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struct iwl_lq_sta *lq_sta,
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struct iwl_scale_tbl_info *tbl,
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int index, u8 is_green)
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int index)
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{
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u32 rate;
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/* Update uCode's rate table. */
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rate = rate_n_flags_from_tbl(mvm, tbl, index, is_green);
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rate = rate_n_flags_from_tbl(mvm, tbl, index);
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rs_fill_link_cmd(mvm, lq_sta, rate);
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iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, CMD_ASYNC, false);
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}
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@ -1802,7 +1760,6 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
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u8 update_lq = 0;
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struct iwl_scale_tbl_info *tbl, *tbl1;
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u16 rate_scale_index_msk = 0;
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u8 is_green = 0;
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u8 active_tbl = 0;
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u8 done_search = 0;
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u16 high_low;
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@ -1844,11 +1801,6 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
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active_tbl = 1 - lq_sta->active_tbl;
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tbl = &(lq_sta->lq_info[active_tbl]);
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if (is_legacy(tbl->lq_type))
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lq_sta->is_green = 0;
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else
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lq_sta->is_green = rs_use_green(sta);
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is_green = lq_sta->is_green;
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/* current tx rate */
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index = lq_sta->last_txrate_idx;
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@ -1887,7 +1839,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
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tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
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/* get "active" rate info */
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index = iwl_hwrate_to_plcp_idx(tbl->current_rate);
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rs_update_rate_tbl(mvm, lq_sta, tbl, index, is_green);
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rs_update_rate_tbl(mvm, lq_sta, tbl, index);
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}
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return;
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}
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@ -2122,7 +2074,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
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lq_update:
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/* Replace uCode's rate table for the destination station. */
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if (update_lq)
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rs_update_rate_tbl(mvm, lq_sta, tbl, index, is_green);
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rs_update_rate_tbl(mvm, lq_sta, tbl, index);
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rs_stay_in_table(lq_sta, false);
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@ -2203,7 +2155,7 @@ lq_update:
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}
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out:
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tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, index, is_green);
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tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, index);
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lq_sta->last_txrate_idx = index;
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}
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@ -2230,7 +2182,6 @@ static void rs_initialize_lq(struct iwl_mvm *mvm,
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int rate_idx;
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int i;
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u32 rate;
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u8 use_green = rs_use_green(sta);
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u8 active_tbl = 0;
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u8 valid_tx_ant;
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@ -2262,7 +2213,7 @@ static void rs_initialize_lq(struct iwl_mvm *mvm,
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if (!rs_is_valid_ant(valid_tx_ant, tbl->ant_type))
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rs_toggle_antenna(valid_tx_ant, &rate, tbl);
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rate = rate_n_flags_from_tbl(mvm, tbl, rate_idx, use_green);
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rate = rate_n_flags_from_tbl(mvm, tbl, rate_idx);
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tbl->current_rate = rate;
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rs_set_expected_tpt_table(lq_sta, tbl);
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rs_fill_link_cmd(NULL, lq_sta, rate);
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@ -2379,7 +2330,6 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
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lq_sta->max_rate_idx = -1;
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lq_sta->missed_rate_counter = IWL_MISSED_RATE_MAX;
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lq_sta->is_green = rs_use_green(sta);
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lq_sta->band = sband->band;
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/*
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* active legacy rates as per supported rates bitmap
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@ -2706,10 +2656,9 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
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(is_ht20(tbl)) ? "20MHz" :
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(is_ht40(tbl)) ? "40MHz" :
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(is_ht80(tbl)) ? "80Mhz" : "BAD BW");
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desc += sprintf(buff+desc, " %s %s %s\n",
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desc += sprintf(buff+desc, " %s %s\n",
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(tbl->is_SGI) ? "SGI" : "",
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(lq_sta->is_green) ? "GF enabled" : "",
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(lq_sta->is_agg) ? "AGG on" : "");
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(lq_sta->is_agg) ? "AGG on" : "");
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}
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desc += sprintf(buff+desc, "last tx rate=0x%X\n",
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lq_sta->last_rate_n_flags);
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@ -2777,7 +2726,7 @@ static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file,
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for (i = 0; i < LQ_SIZE; i++) {
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tbl = &(lq_sta->lq_info[i]);
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desc += sprintf(buff+desc,
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"%s type=%d SGI=%d BW=%s DUP=0 GF=%d\n"
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"%s type=%d SGI=%d BW=%s DUP=0\n"
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"rate=0x%X\n",
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lq_sta->active_tbl == i ? "*" : "x",
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tbl->lq_type,
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@ -2785,7 +2734,6 @@ static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file,
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is_ht20(tbl) ? "20Mhz" :
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is_ht40(tbl) ? "40Mhz" :
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is_ht80(tbl) ? "80Mhz" : "ERR",
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lq_sta->is_green,
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tbl->current_rate);
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for (j = 0; j < IWL_RATE_COUNT; j++) {
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desc += sprintf(buff+desc,
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@ -300,7 +300,6 @@ struct iwl_lq_sta {
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u64 flush_timer; /* time staying in mode before new search */
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u8 action_counter; /* # mode-switch actions tried */
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u8 is_green;
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bool is_vht;
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enum ieee80211_band band;
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