diff options
author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-10-28 08:47:41 +0100 |
---|---|---|
committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2016-02-27 21:00:02 +0100 |
commit | 04e3a5da6b73d7f01661288ead426986fa5312a1 (patch) | |
tree | df6d0d6e656e147db43f112544d033a283899f5c /drivers | |
parent | iwlwifi: mvm: allow to limit the A-MSDU from debugfs (diff) | |
download | linux-04e3a5da6b73d7f01661288ead426986fa5312a1.tar.xz linux-04e3a5da6b73d7f01661288ead426986fa5312a1.zip |
iwlwifi: mvm: don't enable A-MSDU when the rates are too low
Allow A-MSDU only when we are not downscaling and the
initial MCS is at least 5.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/rs.c | 24 | ||||
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/sta.h | 2 | ||||
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/tx.c | 3 |
3 files changed, 26 insertions, 3 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c index 3dc94d2e8a65..61d0a8cd13f9 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c @@ -1673,6 +1673,20 @@ static void rs_stay_in_table(struct iwl_lq_sta *lq_sta, bool force_search) } } +static void rs_set_amsdu_len(struct iwl_mvm *mvm, struct ieee80211_sta *sta, + struct iwl_scale_tbl_info *tbl, + enum rs_action scale_action) +{ + struct iwl_mvm_sta *sta_priv = iwl_mvm_sta_from_mac80211(sta); + + if ((!is_vht(&tbl->rate) && !is_ht(&tbl->rate)) || + tbl->rate.index < IWL_RATE_MCS_5_INDEX || + scale_action == RS_ACTION_DOWNSCALE) + sta_priv->tlc_amsdu = false; + else + sta_priv->tlc_amsdu = true; +} + /* * setup rate table in uCode */ @@ -2416,6 +2430,7 @@ lq_update: tbl->rate.index = index; if (IWL_MVM_RS_80_20_FAR_RANGE_TWEAK) rs_tweak_rate_tbl(mvm, sta, lq_sta, tbl, scale_action); + rs_set_amsdu_len(mvm, sta, tbl, scale_action); rs_update_rate_tbl(mvm, sta, lq_sta, tbl); } @@ -3099,6 +3114,7 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta, sband = hw->wiphy->bands[band]; lq_sta->lq.sta_id = sta_priv->sta_id; + sta_priv->tlc_amsdu = false; for (j = 0; j < LQ_SIZE; j++) rs_rate_scale_clear_tbl_windows(mvm, &lq_sta->lq_info[j]); @@ -3658,10 +3674,13 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file, ssize_t ret; struct iwl_lq_sta *lq_sta = file->private_data; + struct iwl_mvm_sta *mvmsta = + container_of(lq_sta, struct iwl_mvm_sta, lq_sta); struct iwl_mvm *mvm; struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]); struct rs_rate *rate = &tbl->rate; u32 ss_params; + mvm = lq_sta->pers.drv; buff = kmalloc(2048, GFP_KERNEL); if (!buff) @@ -3687,10 +3706,11 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file, (is_ht20(rate)) ? "20MHz" : (is_ht40(rate)) ? "40MHz" : (is_ht80(rate)) ? "80Mhz" : "BAD BW"); - desc += sprintf(buff + desc, " %s %s %s\n", + desc += sprintf(buff + desc, " %s %s %s %s\n", (rate->sgi) ? "SGI" : "NGI", (rate->ldpc) ? "LDPC" : "BCC", - (lq_sta->is_agg) ? "AGG on" : ""); + (lq_sta->is_agg) ? "AGG on" : "", + (mvmsta->tlc_amsdu) ? "AMSDU on" : ""); } desc += sprintf(buff+desc, "last tx rate=0x%X\n", lq_sta->last_rate_n_flags); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.h b/drivers/net/wireless/intel/iwlwifi/mvm/sta.h index b01650ac3598..f95f603ad56c 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.h @@ -313,6 +313,7 @@ struct iwl_mvm_key_pn { * @tx_protection: reference counter for controlling the Tx protection. * @tt_tx_protection: is thermal throttling enable Tx protection? * @disable_tx: is tx to this STA disabled? + * @tlc_amsdu: true if A-MSDU is allowed * @agg_tids: bitmap of tids whose status is operational aggregated (IWL_AGG_ON) * @sleep_tx_count: the number of frames that we told the firmware to let out * even when that station is asleep. This is useful in case the queue @@ -347,6 +348,7 @@ struct iwl_mvm_sta { bool tt_tx_protection; bool disable_tx; + bool tlc_amsdu; u8 agg_tids; u8 sleep_tx_count; }; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c index a5a55da142eb..a73ae01f3a48 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c @@ -460,7 +460,8 @@ static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, return -EINVAL; if (!sta->max_amsdu_len || - !ieee80211_is_data_qos(hdr->frame_control)) { + !ieee80211_is_data_qos(hdr->frame_control) || + !mvmsta->tlc_amsdu) { num_subframes = 1; pad = 0; goto segment; |