From ed780545c13a21dc0276807897e2d4fc142e11ac Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 21 Nov 2019 11:02:31 +0100 Subject: iwlwifi: mvm: report TX rate to mac80211 directly for RS offload If we have offloaded rate scaling, which is always true for those devices supporting HE, then report the TX rate directly from the data the firmware gives us, instead of only passing it to mac80211 on frame status only and for it to track it. First of all, this makes us always report the last good rate that the rate scaling algorithm picked, which is better than reporting the last rate for any frame since management frames etc. are sent with very low rates and could interfere. Additionally, this allows us to properly report HE rates, though in case there's a lot of trigger-based traffic, we don't get any choice in the rates and don't report that properly right now. Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 126 ++++++++++++++++++++++ 1 file changed, 126 insertions(+) (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c') diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index 32dc9d6f0fb6..481f1c9d814f 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -4771,6 +4771,125 @@ static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, return ret; } +static void iwl_mvm_set_sta_rate(u32 rate_n_flags, struct rate_info *rinfo) +{ + switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { + case RATE_MCS_CHAN_WIDTH_20: + rinfo->bw = RATE_INFO_BW_20; + break; + case RATE_MCS_CHAN_WIDTH_40: + rinfo->bw = RATE_INFO_BW_40; + break; + case RATE_MCS_CHAN_WIDTH_80: + rinfo->bw = RATE_INFO_BW_80; + break; + case RATE_MCS_CHAN_WIDTH_160: + rinfo->bw = RATE_INFO_BW_160; + break; + } + + if (rate_n_flags & RATE_MCS_HT_MSK) { + rinfo->flags |= RATE_INFO_FLAGS_MCS; + rinfo->mcs = u32_get_bits(rate_n_flags, RATE_HT_MCS_INDEX_MSK); + rinfo->nss = u32_get_bits(rate_n_flags, + RATE_HT_MCS_NSS_MSK) + 1; + if (rate_n_flags & RATE_MCS_SGI_MSK) + rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; + } else if (rate_n_flags & RATE_MCS_VHT_MSK) { + rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; + rinfo->mcs = u32_get_bits(rate_n_flags, + RATE_VHT_MCS_RATE_CODE_MSK); + rinfo->nss = u32_get_bits(rate_n_flags, + RATE_VHT_MCS_NSS_MSK) + 1; + if (rate_n_flags & RATE_MCS_SGI_MSK) + rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; + } else if (rate_n_flags & RATE_MCS_HE_MSK) { + u32 gi_ltf = u32_get_bits(rate_n_flags, + RATE_MCS_HE_GI_LTF_MSK); + + rinfo->flags |= RATE_INFO_FLAGS_HE_MCS; + rinfo->mcs = u32_get_bits(rate_n_flags, + RATE_VHT_MCS_RATE_CODE_MSK); + rinfo->nss = u32_get_bits(rate_n_flags, + RATE_VHT_MCS_NSS_MSK) + 1; + + if (rate_n_flags & RATE_MCS_HE_106T_MSK) { + rinfo->bw = RATE_INFO_BW_HE_RU; + rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106; + } + + switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) { + case RATE_MCS_HE_TYPE_SU: + case RATE_MCS_HE_TYPE_EXT_SU: + if (gi_ltf == 0 || gi_ltf == 1) + rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; + else if (gi_ltf == 2) + rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; + else if (rate_n_flags & RATE_MCS_SGI_MSK) + rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; + else + rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; + break; + case RATE_MCS_HE_TYPE_MU: + if (gi_ltf == 0 || gi_ltf == 1) + rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; + else if (gi_ltf == 2) + rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; + else + rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; + break; + case RATE_MCS_HE_TYPE_TRIG: + if (gi_ltf == 0 || gi_ltf == 1) + rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; + else + rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; + break; + } + + if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK) + rinfo->he_dcm = 1; + } else { + switch (u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK)) { + case IWL_RATE_1M_PLCP: + rinfo->legacy = 10; + break; + case IWL_RATE_2M_PLCP: + rinfo->legacy = 20; + break; + case IWL_RATE_5M_PLCP: + rinfo->legacy = 55; + break; + case IWL_RATE_11M_PLCP: + rinfo->legacy = 110; + break; + case IWL_RATE_6M_PLCP: + rinfo->legacy = 60; + break; + case IWL_RATE_9M_PLCP: + rinfo->legacy = 90; + break; + case IWL_RATE_12M_PLCP: + rinfo->legacy = 120; + break; + case IWL_RATE_18M_PLCP: + rinfo->legacy = 180; + break; + case IWL_RATE_24M_PLCP: + rinfo->legacy = 240; + break; + case IWL_RATE_36M_PLCP: + rinfo->legacy = 360; + break; + case IWL_RATE_48M_PLCP: + rinfo->legacy = 480; + break; + case IWL_RATE_54M_PLCP: + rinfo->legacy = 540; + break; + } + } +} + static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, @@ -4785,6 +4904,13 @@ static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); } + if (iwl_mvm_has_tlc_offload(mvm)) { + struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw; + + iwl_mvm_set_sta_rate(lq_sta->last_rate_n_flags, &sinfo->txrate); + sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); + } + /* if beacon filtering isn't on mac80211 does it anyway */ if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) return; -- cgit From 2763bba6328c53c455d8f7f5302b80030551c31b Mon Sep 17 00:00:00 2001 From: Haim Dreyfuss Date: Wed, 27 Nov 2019 14:55:58 -0500 Subject: iwlwifi: Don't ignore the cap field upon mcc update When receiving a new MCC driver get all the data about the new country code and its regulatory information. Mistakenly, we ignored the cap field, which includes global regulatory information which should be applies to every channel. Fix it. Signed-off-by: Haim Dreyfuss Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c') diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index 481f1c9d814f..a46204b905d2 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -256,7 +256,8 @@ struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, __le32_to_cpu(resp->n_channels), resp->channels, __le16_to_cpu(resp->mcc), - __le16_to_cpu(resp->geo_info)); + __le16_to_cpu(resp->geo_info), + __le16_to_cpu(resp->cap)); /* Store the return source id */ src_id = resp->source_id; kfree(resp); -- cgit From df2378ab0f2a9dd4cf4501268af1902cc4ebacd8 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 11 Dec 2019 10:15:52 +0100 Subject: iwlwifi: mvm: fix potential SKB leak on TXQ TX When we transmit after TXQ dequeue, we aren't paying attention to the return value of the transmit functions, leading to a potential SKB leak. Refactor the code a bit (and rename ..._tx to ..._tx_sta) to check for this happening. Signed-off-by: Johannes Berg Fixes: cfbc6c4c5b91 ("iwlwifi: mvm: support mac80211 TXQs model") Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 28 +++++++++++++---------- 1 file changed, 16 insertions(+), 12 deletions(-) (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c') diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index a46204b905d2..6717f25c46b1 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -755,6 +755,20 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) return ret; } +static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb, + struct ieee80211_sta *sta) +{ + if (likely(sta)) { + if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0)) + return; + } else { + if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0)) + return; + } + + ieee80211_free_txskb(mvm->hw, skb); +} + static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, struct sk_buff *skb) @@ -798,14 +812,7 @@ static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, } } - if (sta) { - if (iwl_mvm_tx_skb(mvm, skb, sta)) - goto drop; - return; - } - - if (iwl_mvm_tx_skb_non_sta(mvm, skb)) - goto drop; + iwl_mvm_tx_skb(mvm, skb, sta); return; drop: ieee80211_free_txskb(hw, skb); @@ -855,10 +862,7 @@ void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq) break; } - if (!txq->sta) - iwl_mvm_tx_skb_non_sta(mvm, skb); - else - iwl_mvm_tx_skb(mvm, skb, txq->sta); + iwl_mvm_tx_skb(mvm, skb, txq->sta); } } while (atomic_dec_return(&mvmtxq->tx_request)); rcu_read_unlock(); -- cgit