From ca6f38ff4b17855692a920493aca6af50a8c2ffd Mon Sep 17 00:00:00 2001 From: Eyal Shapira Date: Mon, 9 Dec 2013 11:14:11 +0200 Subject: [PATCH] iwlwifi: mvm: rs: avoid recalc of supported legacy rate mask The supported legacy rate mask is initialized when rs is initialized based on the remote peer supported rates. There's no need to re mask it repeatedly with the supported remote peer rates. Signed-off-by: Eyal Shapira Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/mvm/rs.c | 36 ++--------------------------------- drivers/net/wireless/iwlwifi/mvm/rs.h | 1 - 2 files changed, 2 insertions(+), 35 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/rs.c b/drivers/net/wireless/iwlwifi/mvm/rs.c index eee3381..30470d4 100644 --- a/drivers/net/wireless/iwlwifi/mvm/rs.c +++ b/drivers/net/wireless/iwlwifi/mvm/rs.c @@ -880,16 +880,6 @@ static void rs_get_lower_rate(struct iwl_lq_sta *lq_sta, rate_mask = rs_get_supported_rates(lq_sta, rate); - /* Mask with station rate restriction */ - if (is_legacy(rate)) { - /* supp_rates has no CCK bits in A mode */ - if (lq_sta->band == IEEE80211_BAND_5GHZ) - rate_mask = (u16)(rate_mask & - (lq_sta->supp_rates << IWL_FIRST_OFDM_RATE)); - else - rate_mask = (u16)(rate_mask & lq_sta->supp_rates); - } - /* If we switched from HT to legacy, check current rate */ if (switch_to_legacy && (rate_mask & (1 << scale_index))) { low = scale_index; @@ -1629,7 +1619,6 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, u16 rate_mask; u8 update_lq = 0; struct iwl_scale_tbl_info *tbl, *tbl1; - u16 rate_scale_index_msk = 0; u8 active_tbl = 0; u8 done_search = 0; u16 high_low; @@ -1646,8 +1635,6 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, info->flags & IEEE80211_TX_CTL_NO_ACK) return; - lq_sta->supp_rates = sta->supp_rates[lq_sta->band]; - tid = rs_get_tid(lq_sta, hdr); if ((tid != IWL_MAX_TID_COUNT) && (lq_sta->tx_agg_tid_en & (1 << tid))) { @@ -1686,24 +1673,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, /* rates available for this association, and for modulation mode */ rate_mask = rs_get_supported_rates(lq_sta, rate); - /* mask with station rate restriction */ - if (is_legacy(rate)) { - if (lq_sta->band == IEEE80211_BAND_5GHZ) - /* supp_rates has no CCK bits in A mode */ - rate_scale_index_msk = (u16) (rate_mask & - (lq_sta->supp_rates << IWL_FIRST_OFDM_RATE)); - else - rate_scale_index_msk = (u16) (rate_mask & - lq_sta->supp_rates); - - } else { - rate_scale_index_msk = rate_mask; - } - - if (!rate_scale_index_msk) - rate_scale_index_msk = rate_mask; - - if (!((BIT(index) & rate_scale_index_msk))) { + if (!(BIT(index) & rate_mask)) { IWL_ERR(mvm, "Current Rate is not valid\n"); if (lq_sta->search_better_tbl) { /* revert to active table if search table is not valid*/ @@ -1816,8 +1786,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm, /* (Else) not in search of better modulation mode, try for better * starting rate, while staying in this mode. */ - high_low = rs_get_adjacent_rate(mvm, index, rate_scale_index_msk, - rate->type); + high_low = rs_get_adjacent_rate(mvm, index, rate_mask, rate->type); low = high_low & 0xff; high = (high_low >> 8) & 0xff; @@ -2253,7 +2222,6 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta, rs_rate_scale_clear_window(&lq_sta->lq_info[j].win[i]); lq_sta->flush_timer = 0; - lq_sta->supp_rates = sta->supp_rates[sband->band]; IWL_DEBUG_RATE(mvm, "LQ: *** rate scale station global init for station %d ***\n", diff --git a/drivers/net/wireless/iwlwifi/mvm/rs.h b/drivers/net/wireless/iwlwifi/mvm/rs.h index 7b26e65..c31aa59 100644 --- a/drivers/net/wireless/iwlwifi/mvm/rs.h +++ b/drivers/net/wireless/iwlwifi/mvm/rs.h @@ -314,7 +314,6 @@ struct iwl_lq_sta { enum ieee80211_band band; /* The following are bitmaps of rates; IWL_RATE_6M_MASK, etc. */ - u32 supp_rates; u16 active_legacy_rate; u16 active_siso_rate; u16 active_mimo2_rate; -- 2.7.4