From 7f11d17f0b0805d68f3d2e116f2e7ff0c655fe39 Mon Sep 17 00:00:00 2001 From: Ilan Peer Date: Fri, 14 Apr 2023 13:12:05 +0300 Subject: [PATCH] wifi: iwlwifi: mvm: Fix setting the rate for non station cases The setting of the rate used for non station cases did not take into consideration the interface type etc., thus when probe responses are transmitted on P2P Device interface etc. CCK rates were used which is not allowed. Modify the code so the non station case would consider the interface type etc. For HWs/FWs that do not support rate control, preserve the previous behavior, i.e., take the rate from the skb metadata and adjust as needed. Signed-off-by: Ilan Peer Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230414130637.fa0e4d42205d.Iab4784560c77b965fec070d4d0a1ec84171d94ff@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c | 10 +++++---- drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 3 +++ drivers/net/wireless/intel/iwlwifi/mvm/tx.c | 26 +++++++++++------------ 3 files changed, 22 insertions(+), 17 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c index 962d8c2..20db9fc 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c @@ -870,9 +870,9 @@ static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size) return ie - beacon; } -static u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm, - struct ieee80211_tx_info *info, - struct ieee80211_vif *vif) +u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm, + struct ieee80211_tx_info *info, + struct ieee80211_vif *vif) { struct ieee80211_supported_band *sband; unsigned long basic = vif->bss_conf.basic_rates; @@ -892,7 +892,9 @@ static u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm, } } - if (info->band == NL80211_BAND_2GHZ && !vif->p2p) { + if (info->band == NL80211_BAND_2GHZ && !vif->p2p && + vif->type != NL80211_IFTYPE_P2P_DEVICE && + !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) { if (lowest_cck != IWL_RATE_COUNT) rate = lowest_cck; else if (lowest_ofdm != IWL_RATE_COUNT) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index a4f8b5a..7a8b4be 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -1786,6 +1786,9 @@ int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm, struct ieee80211_tx_info *info, struct ieee80211_vif *vif); +u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm, + struct ieee80211_tx_info *info, + struct ieee80211_vif *vif); u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx); void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c index 478442e..8bdc98d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c @@ -329,23 +329,23 @@ static u32 iwl_mvm_get_tx_rate(struct iwl_mvm *mvm, sta ? iwl_mvm_sta_from_mac80211(sta)->sta_state : -1); rate_idx = info->control.rates[0].idx; + + /* For non 2 GHZ band, remap mac80211 rate indices into driver + * indices. + */ + if (info->band != NL80211_BAND_2GHZ || + (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) + rate_idx += IWL_FIRST_OFDM_RATE; + + /* For 2.4 GHZ band, check that there is no need to remap */ + BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); } /* if the rate isn't a well known legacy rate, take the lowest one */ if (rate_idx < 0 || rate_idx >= IWL_RATE_COUNT_LEGACY) - rate_idx = rate_lowest_index( - &mvm->nvm_data->bands[info->band], sta); - - /* - * For non 2 GHZ band, remap mac80211 rate - * indices into driver indices - */ - if (info->band != NL80211_BAND_2GHZ || - (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) - rate_idx += IWL_FIRST_OFDM_RATE; - - /* For 2.4 GHZ band, check that there is no need to remap */ - BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); + rate_idx = iwl_mvm_mac_ctxt_get_lowest_rate(mvm, + info, + info->control.vif); /* Get PLCP rate for tx_cmd->rate_n_flags */ rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate_idx); -- 2.7.4