From 7b09068721b1a1bbba9372d0293c21d2425b14de Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 19 Jan 2011 02:53:54 -0800 Subject: [PATCH] iwlwifi: use maximum aggregation size Use the values from the peer to set up the ucode for the right maximum number of subframes in an aggregate. Since the ucode only tracks this per station, use the minimum across all aggregation sessions with this peer. Signed-off-by: Johannes Berg Signed-off-by: Wey-Yi Guy --- drivers/net/wireless/iwlwifi/iwl-agn-rs.c | 5 +++- drivers/net/wireless/iwlwifi/iwl-agn.c | 32 +++++++++++++++++++---- drivers/net/wireless/iwlwifi/iwl-dev.h | 1 + 3 files changed, 32 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c index 20d01a312a07..d03b4734c892 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c @@ -2890,6 +2890,8 @@ static void rs_fill_link_cmd(struct iwl_priv *priv, u8 ant_toggle_cnt = 0; u8 use_ht_possible = 1; u8 valid_tx_ant = 0; + struct iwl_station_priv *sta_priv = + container_of(lq_sta, struct iwl_station_priv, lq_sta); struct iwl_link_quality_cmd *lq_cmd = &lq_sta->lq; /* Override starting rate (index 0) if needed for debug purposes */ @@ -3008,7 +3010,8 @@ static void rs_fill_link_cmd(struct iwl_priv *priv, repeat_rate--; } - lq_cmd->agg_params.agg_frame_cnt_limit = LINK_QUAL_AGG_FRAME_LIMIT_DEF; + lq_cmd->agg_params.agg_frame_cnt_limit = + sta_priv->max_agg_bufsize ?: LINK_QUAL_AGG_FRAME_LIMIT_DEF; lq_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF; lq_cmd->agg_params.agg_time_limit = diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index dcc4b2d55988..cf285f53ad1d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -3429,6 +3429,7 @@ int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw, { struct iwl_priv *priv = hw->priv; int ret = -EINVAL; + struct iwl_station_priv *sta_priv = (void *) sta->drv_priv; IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n", sta->addr, tid); @@ -3483,11 +3484,28 @@ int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw, } break; case IEEE80211_AMPDU_TX_OPERATIONAL: + /* + * If the limit is 0, then it wasn't initialised yet, + * use the default. We can do that since we take the + * minimum below, and we don't want to go above our + * default due to hardware restrictions. + */ + if (sta_priv->max_agg_bufsize == 0) + sta_priv->max_agg_bufsize = + LINK_QUAL_AGG_FRAME_LIMIT_DEF; + + /* + * Even though in theory the peer could have different + * aggregation reorder buffer sizes for different sessions, + * our ucode doesn't allow for that and has a global limit + * for each station. Therefore, use the minimum of all the + * aggregation sessions and our default value. + */ + sta_priv->max_agg_bufsize = + min(sta_priv->max_agg_bufsize, buf_size); + if (priv->cfg->ht_params && priv->cfg->ht_params->use_rts_for_aggregation) { - struct iwl_station_priv *sta_priv = - (void *) sta->drv_priv; - /* * switch to RTS/CTS if it is the prefer protection * method for HT traffic @@ -3495,9 +3513,13 @@ int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw, sta_priv->lq_sta.lq.general_params.flags |= LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; - iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif), - &sta_priv->lq_sta.lq, CMD_ASYNC, false); } + + sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit = + sta_priv->max_agg_bufsize; + + iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif), + &sta_priv->lq_sta.lq, CMD_ASYNC, false); ret = 0; break; } diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index b5f21e041953..c56b797e1a1a 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -509,6 +509,7 @@ struct iwl_station_priv { atomic_t pending_frames; bool client; bool asleep; + u8 max_agg_bufsize; }; /** -- 2.30.2