From 341ca402e42b3c4a8b34341a35f82ff9f7bf8664 Mon Sep 17 00:00:00 2001 From: Liad Kaufman Date: Sun, 18 Sep 2016 14:51:59 +0300 Subject: [PATCH 01/10] iwlwifi: mvm: update txq metadata to current owner When a TXQ's owner is changed, the FW is indeed notified, but the driver doesn't update the current metadata to reflect the owner change. Fix that. Signed-off-by: Liad Kaufman Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index fc771885e383..a65030f4019d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -875,12 +875,17 @@ static void iwl_mvm_change_queue_owner(struct iwl_mvm *mvm, int queue) cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); - if (ret) + if (ret) { IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", queue, ret); - else - IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", - queue, tid); + return; + } + + spin_lock_bh(&mvm->queue_info_lock); + mvm->queue_info[queue].txq_tid = tid; + spin_unlock_bh(&mvm->queue_info_lock); + IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", + queue, tid); } static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) From 56214749e0b46eeac6795551f187c0f9443918f2 Mon Sep 17 00:00:00 2001 From: Liad Kaufman Date: Thu, 22 Sep 2016 15:14:08 +0300 Subject: [PATCH 02/10] iwlwifi: mvm: fix reserved txq freeing If a TXQ's marking as a reserved queue is removed, when removing the STA the driver might try to access out of bounds memory. Make sure the reserved queue is freed only if it is still reserved. Signed-off-by: Liad Kaufman Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index a65030f4019d..c9dcb70cb525 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -1494,12 +1494,15 @@ int iwl_mvm_rm_sta(struct iwl_mvm *mvm, ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); /* If DQA is supported - the queues can be disabled now */ - if (iwl_mvm_is_dqa_supported(mvm)) { + if (iwl_mvm_is_dqa_supported(mvm)) + iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); + + /* If there is a TXQ still marked as reserved - free it */ + if (iwl_mvm_is_dqa_supported(mvm) && + mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { u8 reserved_txq = mvm_sta->reserved_queue; enum iwl_mvm_queue_status *status; - iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); - /* * If no traffic has gone through the reserved TXQ - it * is still marked as IWL_MVM_QUEUE_RESERVED, and From 737847aa2c22ea41ce38950bff800d2f7dd05a03 Mon Sep 17 00:00:00 2001 From: Liad Kaufman Date: Tue, 27 Sep 2016 15:17:29 +0300 Subject: [PATCH 03/10] iwlwifi: mvm: support MONITOR vif in DQA mode In DQA mode the TXQs are allocated on demand, so make sure the sniffer STA tfd_queue_msk isn't set. Signed-off-by: Liad Kaufman Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c index 6b962d6b067a..9a9120319510 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c @@ -899,9 +899,11 @@ static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); - for (i = 0; i < IEEE80211_NUM_ACS; i++) - if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) - tfd_queue_msk |= BIT(vif->hw_queue[i]); + if (!iwl_mvm_is_dqa_supported(mvm)) { + for (i = 0; i < IEEE80211_NUM_ACS; i++) + if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) + tfd_queue_msk |= BIT(vif->hw_queue[i]); + } cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | MAC_FILTER_IN_CONTROL_AND_MGMT | From ad5de73734031c07eb8c7cdb7c7d63d3630bb202 Mon Sep 17 00:00:00 2001 From: Liad Kaufman Date: Tue, 27 Sep 2016 16:01:10 +0300 Subject: [PATCH 04/10] iwlwifi: mvm: fix dqa deferred frames marking When a STA has deferred traffic to TX, an appropriate bit is turned on in %deferred_tx_frames to indicate deferred traffic. This marking is never turned off, resulting in iterating over TIDs with no deferred traffic. Although this didn't cause any failures/errors/bugs, there is still no point of iterating over these TIDs when not needed. Signed-off-by: Liad Kaufman Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index c9dcb70cb525..5ec1b96b9593 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -1015,6 +1015,7 @@ static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, local_bh_disable(); spin_lock(&mvmsta->lock); skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); + mvmsta->deferred_traffic_tid_map &= ~BIT(tid); spin_unlock(&mvmsta->lock); while ((skb = __skb_dequeue(&deferred_tx))) From 65e254821cee1a63f3f6d23270e90b33432b2bef Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 13 Apr 2016 14:24:22 +0200 Subject: [PATCH 05/10] iwlwifi: mvm: use firmware station PM notification for AP_LINK_PS When using RSS on 9000 series devices, we can't rely on processing the received frames for station powersave handling, since they could be processed on different CPUs and out of order. In order to still manage the powersave of stations, the firmware sends a notification on sleep->wake, wake->sleep and - for U-APSD - frames received with PM while already sleeping (with the TID.) With this, the driver can set AP_LINK_PS, which is required for real parallel RX. In addition, this requires checking for PS-Poll frames and calling ieee80211_sta_pspoll() appropriately. Signed-off-by: Johannes Berg Signed-off-by: Emmanuel Grumbach Signed-off-by: Luca Coelho --- .../net/wireless/intel/iwlwifi/iwl-fw-file.h | 2 + .../wireless/intel/iwlwifi/mvm/fw-api-rx.h | 26 +++++++ .../wireless/intel/iwlwifi/mvm/fw-api-sta.h | 9 ++- .../net/wireless/intel/iwlwifi/mvm/fw-api.h | 1 + .../net/wireless/intel/iwlwifi/mvm/mac80211.c | 70 +++++++++++++++++-- drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 1 + drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 3 + drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 13 ++++ drivers/net/wireless/intel/iwlwifi/mvm/sta.h | 1 + 9 files changed, 119 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h b/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h index ceec5ca2b1ab..1ad0ec180d5d 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h @@ -293,6 +293,7 @@ typedef unsigned int __bitwise__ iwl_ucode_tlv_capa_t; * is supported. * @IWL_UCODE_TLV_CAPA_BT_COEX_RRC: supports BT Coex RRC * @IWL_UCODE_TLV_CAPA_GSCAN_SUPPORT: supports gscan + * @IWL_UCODE_TLV_CAPA_STA_PM_NOTIF: firmware will send STA PM notification * @IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE: extended DTS measurement * @IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS: supports short PM timeouts * @IWL_UCODE_TLV_CAPA_BT_MPLUT_SUPPORT: supports bt-coex Multi-priority LUT @@ -342,6 +343,7 @@ enum iwl_ucode_tlv_capa { IWL_UCODE_TLV_CAPA_LAR_MULTI_MCC = (__force iwl_ucode_tlv_capa_t)29, IWL_UCODE_TLV_CAPA_BT_COEX_RRC = (__force iwl_ucode_tlv_capa_t)30, IWL_UCODE_TLV_CAPA_GSCAN_SUPPORT = (__force iwl_ucode_tlv_capa_t)31, + IWL_UCODE_TLV_CAPA_STA_PM_NOTIF = (__force iwl_ucode_tlv_capa_t)38, IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE = (__force iwl_ucode_tlv_capa_t)64, IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS = (__force iwl_ucode_tlv_capa_t)65, IWL_UCODE_TLV_CAPA_BT_MPLUT_SUPPORT = (__force iwl_ucode_tlv_capa_t)67, diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-rx.h b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-rx.h index acc5cd53e4ba..b530fa47d68a 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-rx.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-rx.h @@ -474,4 +474,30 @@ struct iwl_mvm_internal_rxq_notif { u8 data[]; } __packed; +/** + * enum iwl_mvm_pm_event - type of station PM event + * @IWL_MVM_PM_EVENT_AWAKE: station woke up + * @IWL_MVM_PM_EVENT_ASLEEP: station went to sleep + * @IWL_MVM_PM_EVENT_UAPSD: station sent uAPSD trigger + * @IWL_MVM_PM_EVENT_PS_POLL: station sent PS-Poll + */ +enum iwl_mvm_pm_event { + IWL_MVM_PM_EVENT_AWAKE, + IWL_MVM_PM_EVENT_ASLEEP, + IWL_MVM_PM_EVENT_UAPSD, + IWL_MVM_PM_EVENT_PS_POLL, +}; /* PEER_PM_NTFY_API_E_VER_1 */ + +/** + * struct iwl_mvm_pm_state_notification - station PM state notification + * @sta_id: station ID of the station changing state + * @type: the new powersave state, see IWL_MVM_PM_EVENT_ above + */ +struct iwl_mvm_pm_state_notification { + u8 sta_id; + u8 type; + /* private: */ + u16 reserved; +} __packed; /* PEER_PM_NTFY_API_S_VER_1 */ + #endif /* __fw_api_rx_h__ */ diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-sta.h b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-sta.h index 6c8e3ca79323..3b5150e9975d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-sta.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-sta.h @@ -179,7 +179,7 @@ enum iwl_sta_key_flag { * enum iwl_sta_modify_flag - indicate to the fw what flag are being changed * @STA_MODIFY_QUEUE_REMOVAL: this command removes a queue * @STA_MODIFY_TID_DISABLE_TX: this command modifies %tid_disable_tx - * @STA_MODIFY_TX_RATE: unused + * @STA_MODIFY_UAPSD_ACS: this command modifies %uapsd_trigger_acs * @STA_MODIFY_ADD_BA_TID: this command modifies %add_immediate_ba_tid * @STA_MODIFY_REMOVE_BA_TID: this command modifies %remove_immediate_ba_tid * @STA_MODIFY_SLEEPING_STA_TX_COUNT: this command modifies %sleep_tx_count @@ -189,7 +189,7 @@ enum iwl_sta_key_flag { enum iwl_sta_modify_flag { STA_MODIFY_QUEUE_REMOVAL = BIT(0), STA_MODIFY_TID_DISABLE_TX = BIT(1), - STA_MODIFY_TX_RATE = BIT(2), + STA_MODIFY_UAPSD_ACS = BIT(2), STA_MODIFY_ADD_BA_TID = BIT(3), STA_MODIFY_REMOVE_BA_TID = BIT(4), STA_MODIFY_SLEEPING_STA_TX_COUNT = BIT(5), @@ -353,6 +353,8 @@ struct iwl_mvm_add_sta_cmd_v7 { * @beamform_flags: beam forming controls * @tfd_queue_msk: tfd queues used by this station * @rx_ba_window: aggregation window size + * @scd_queue_bank: queue bank in used. Each bank contains 32 queues. 0 means + * that the queues used by this station are in the first 32. * * The device contains an internal table of per-station information, with info * on security keys, aggregation parameters, and Tx rates for initial Tx @@ -382,7 +384,8 @@ struct iwl_mvm_add_sta_cmd { __le16 beamform_flags; __le32 tfd_queue_msk; __le16 rx_ba_window; - __le16 reserved; + u8 scd_queue_bank; + u8 uapsd_trigger_acs; } __packed; /* ADD_STA_CMD_API_S_VER_8 */ /** diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h index 97633690f3d5..ae12badc0c2a 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h @@ -332,6 +332,7 @@ enum iwl_data_path_subcmd_ids { DQA_ENABLE_CMD = 0x0, UPDATE_MU_GROUPS_CMD = 0x1, TRIGGER_RX_QUEUES_NOTIF_CMD = 0x2, + STA_PM_NOTIF = 0xFD, MU_GROUP_MGMT_NOTIF = 0xFE, RX_QUEUES_NOTIFICATION = 0xFF, }; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index 318efd814037..9eeb2c36bbc1 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -445,6 +445,8 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); if (iwl_mvm_has_new_rx_api(mvm)) ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); + if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) + ieee80211_hw_set(hw, AP_LINK_PS); if (mvm->trans->num_rx_queues > 1) ieee80211_hw_set(hw, USES_RSS); @@ -2318,10 +2320,9 @@ iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, tids, more_data, true); } -static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - enum sta_notify_cmd cmd, - struct ieee80211_sta *sta) +static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, + enum sta_notify_cmd cmd, + struct ieee80211_sta *sta) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); @@ -2374,6 +2375,67 @@ static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, spin_unlock_bh(&mvmsta->lock); } +static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + enum sta_notify_cmd cmd, + struct ieee80211_sta *sta) +{ + __iwl_mvm_mac_sta_notify(hw, cmd, sta); +} + +void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; + struct ieee80211_sta *sta; + struct iwl_mvm_sta *mvmsta; + bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); + + if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) + return; + + rcu_read_lock(); + sta = mvm->fw_id_to_mac_id[notif->sta_id]; + if (WARN_ON(IS_ERR_OR_NULL(sta))) { + rcu_read_unlock(); + return; + } + + mvmsta = iwl_mvm_sta_from_mac80211(sta); + + if (!mvmsta->vif || + mvmsta->vif->type != NL80211_IFTYPE_AP) { + rcu_read_unlock(); + return; + } + + if (mvmsta->sleeping != sleeping) { + mvmsta->sleeping = sleeping; + __iwl_mvm_mac_sta_notify(mvm->hw, + sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, + sta); + ieee80211_sta_ps_transition(sta, sleeping); + } + + if (sleeping) { + switch (notif->type) { + case IWL_MVM_PM_EVENT_AWAKE: + case IWL_MVM_PM_EVENT_ASLEEP: + break; + case IWL_MVM_PM_EVENT_UAPSD: + ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); + break; + case IWL_MVM_PM_EVENT_PS_POLL: + ieee80211_sta_pspoll(sta); + break; + default: + break; + } + } + + rcu_read_unlock(); +} + static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index d17cbf603f7c..726ba48da15d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -1418,6 +1418,7 @@ void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); +void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); void iwl_mvm_window_status_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 05fe6dd1a2c8..e86986f5c40d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -306,6 +306,8 @@ static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC), RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF, iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC), + RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF, + iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC), }; #undef RX_HANDLER #undef RX_HANDLER_GRP @@ -452,6 +454,7 @@ static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = { HCMD_NAME(UPDATE_MU_GROUPS_CMD), HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD), + HCMD_NAME(STA_PM_NOTIF), HCMD_NAME(MU_GROUP_MGMT_NOTIF), HCMD_NAME(RX_QUEUES_NOTIFICATION), }; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index 5ec1b96b9593..82ee786bba63 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -203,6 +203,19 @@ int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, add_sta_cmd.station_flags |= cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); + if (sta->wme) { + add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; + + if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) + add_sta_cmd.uapsd_trigger_acs |= BIT(AC_BK); + if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) + add_sta_cmd.uapsd_trigger_acs |= BIT(AC_BE); + if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) + add_sta_cmd.uapsd_trigger_acs |= BIT(AC_VI); + if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) + add_sta_cmd.uapsd_trigger_acs |= BIT(AC_VO); + } + status = ADD_STA_SUCCESS; ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, iwl_mvm_add_sta_cmd_size(mvm), diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.h b/drivers/net/wireless/intel/iwlwifi/mvm/sta.h index e068d5355865..b45c7b9937c8 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.h @@ -436,6 +436,7 @@ struct iwl_mvm_sta { bool disable_tx; bool tlc_amsdu; + bool sleeping; u8 agg_tids; u8 sleep_tx_count; u8 avg_energy; From 64fa3aff89785b5a924ce3934f6595c35b4dffee Mon Sep 17 00:00:00 2001 From: Sharon Dvir Date: Wed, 17 Aug 2016 15:35:09 +0300 Subject: [PATCH 06/10] iwlwifi: pcie: give a meaningful name to interrupt request Instead of passing DRV_NAME pass a string that represents the reason for the interrupt. Signed-off-by: Sharon Dvir Signed-off-by: Luca Coelho --- .../net/wireless/intel/iwlwifi/pcie/trans.c | 29 ++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c index ae95533e587d..b10e3633df1a 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c @@ -1598,6 +1598,29 @@ static void iwl_pcie_irq_set_affinity(struct iwl_trans *trans) } } +static const char *queue_name(struct device *dev, + struct iwl_trans_pcie *trans_p, int i) +{ + if (trans_p->shared_vec_mask) { + int vec = trans_p->shared_vec_mask & + IWL_SHARED_IRQ_FIRST_RSS ? 1 : 0; + + if (i == 0) + return DRV_NAME ": shared IRQ"; + + return devm_kasprintf(dev, GFP_KERNEL, + DRV_NAME ": queue %d", i + vec); + } + if (i == 0) + return DRV_NAME ": default queue"; + + if (i == trans_p->alloc_vecs - 1) + return DRV_NAME ": exception"; + + return devm_kasprintf(dev, GFP_KERNEL, + DRV_NAME ": queue %d", i); +} + static int iwl_pcie_init_msix_handler(struct pci_dev *pdev, struct iwl_trans_pcie *trans_pcie) { @@ -1606,6 +1629,10 @@ static int iwl_pcie_init_msix_handler(struct pci_dev *pdev, for (i = 0; i < trans_pcie->alloc_vecs; i++) { int ret; struct msix_entry *msix_entry; + const char *qname = queue_name(&pdev->dev, trans_pcie, i); + + if (!qname) + return -ENOMEM; msix_entry = &trans_pcie->msix_entries[i]; ret = devm_request_threaded_irq(&pdev->dev, @@ -1615,7 +1642,7 @@ static int iwl_pcie_init_msix_handler(struct pci_dev *pdev, iwl_pcie_irq_msix_handler : iwl_pcie_irq_rx_msix_handler, IRQF_SHARED, - DRV_NAME, + qname, msix_entry); if (ret) { IWL_ERR(trans_pcie->trans, From 19c52f460f6d84af8225d8a769d66871dc5ed65b Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Sun, 9 Oct 2016 15:43:24 +0300 Subject: [PATCH 07/10] iwlwifi: mvm: tell the firmware about the AID of the peer When a peer associates, the firmware will soon want to know its AID to be able to compute the TIM IE by itself. In DQA, the firmware has all the information it needs to update the TIM internally. The only missing part is the AID. Signed-off-by: Emmanuel Grumbach Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index 82ee786bba63..636c8b03e318 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -202,6 +202,7 @@ int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); add_sta_cmd.station_flags |= cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); + add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); if (sta->wme) { add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; From 8236f7db272484093fb02ce72a40e7224a5c29d4 Mon Sep 17 00:00:00 2001 From: Sara Sharon Date: Thu, 6 Oct 2016 16:42:32 +0300 Subject: [PATCH 08/10] iwlwifi: mvm: assign cab queue to the correct station Currently when configuring the cab queue the scheduler is configured without station id - which results in station id 0. In DQA mode this causes firmware to assert later on when the actual station 0 is added with an empty tfd_queue_mask. Fix that by configuring the queue to the broadcast station. This is a bit trickier since the queue should not be included in the tfd_queue_mask of the ADD_STA since it is a multicast queue, and the tfd_queue_mask is only unicast queue. As a result the queue should be enabled only after the broadcast station is added. Signed-off-by: Sara Sharon Signed-off-by: Luca Coelho --- .../net/wireless/intel/iwlwifi/mvm/mac-ctxt.c | 16 +++++++--------- .../net/wireless/intel/iwlwifi/mvm/mac80211.c | 16 ++++++++++++++++ 2 files changed, 23 insertions(+), 9 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c index 9a9120319510..4a0874e40731 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c @@ -499,23 +499,21 @@ int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) if (ret) return ret; + /* If DQA is supported - queues will be enabled when needed */ + if (iwl_mvm_is_dqa_supported(mvm)) + return 0; + switch (vif->type) { case NL80211_IFTYPE_P2P_DEVICE: - if (!iwl_mvm_is_dqa_supported(mvm)) - iwl_mvm_enable_ac_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE, - IWL_MVM_OFFCHANNEL_QUEUE, - IWL_MVM_TX_FIFO_VO, 0, - wdg_timeout); + iwl_mvm_enable_ac_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE, + IWL_MVM_OFFCHANNEL_QUEUE, + IWL_MVM_TX_FIFO_VO, 0, wdg_timeout); break; case NL80211_IFTYPE_AP: iwl_mvm_enable_ac_txq(mvm, vif->cab_queue, vif->cab_queue, IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); /* fall through */ default: - /* If DQA is supported - queues will be enabled when needed */ - if (iwl_mvm_is_dqa_supported(mvm)) - break; - for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) iwl_mvm_enable_ac_txq(mvm, vif->hw_queue[ac], vif->hw_queue[ac], diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index 9eeb2c36bbc1..4f8c1347aa23 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -2099,6 +2099,22 @@ static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, if (ret) goto out_unbind; + /* enable the multicast queue, now that we have a station for it */ + if (iwl_mvm_is_dqa_supported(mvm)) { + unsigned int wdg_timeout = + iwl_mvm_get_wd_timeout(mvm, vif, false, false); + struct iwl_trans_txq_scd_cfg cfg = { + .fifo = IWL_MVM_TX_FIFO_MCAST, + .sta_id = mvmvif->bcast_sta.sta_id, + .tid = IWL_MAX_TID_COUNT, + .aggregate = false, + .frame_limit = IWL_FRAME_LIMIT, + }; + + iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, + &cfg, wdg_timeout); + } + /* must be set before quota calculations */ mvmvif->ap_ibss_active = true; From 7948b87308a489c2caa23574ea3c72298288c374 Mon Sep 17 00:00:00 2001 From: Liad Kaufman Date: Thu, 22 Sep 2016 14:41:28 +0300 Subject: [PATCH 09/10] iwlwifi: mvm: enable dynamic queue allocation mode New firmwares support dynamic queue allocation (DQA), which enables on-demand allocation of queues per RA/TID, instead of allocating them statically per vif. This allows an AP to send, for instance, BE traffic to STA2 even if it also needs to send traffic to a sleeping STA1, without being blocked by the sleeping station. The implementation in the driver is now ready, so we can enable this feature by default when running firmwares that support it. Signed-off-by: Liad Kaufman [reworded the commit message] Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index 726ba48da15d..cde8c6cda594 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -1111,9 +1111,8 @@ static inline bool iwl_mvm_is_d0i3_supported(struct iwl_mvm *mvm) static inline bool iwl_mvm_is_dqa_supported(struct iwl_mvm *mvm) { - /* Make sure DQA isn't allowed in driver until feature is complete */ - return false && fw_has_capa(&mvm->fw->ucode_capa, - IWL_UCODE_TLV_CAPA_DQA_SUPPORT); + return fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_DQA_SUPPORT); } static inline bool iwl_mvm_enter_d0i3_on_suspend(struct iwl_mvm *mvm) From 7e62a699aafbd97928f19a8356d719b71b0e151c Mon Sep 17 00:00:00 2001 From: Aviya Erenfeld Date: Tue, 20 Sep 2016 18:07:44 +0300 Subject: [PATCH 10/10] iwlwifi: mvm: use dev_coredumpsg() iwlmvm currently uses dev_coredumpm() to collect multiple buffers, but this has the downside of pinning the module until the coredump expires, if the data isn't read by any userspace. Avoid this by using the new dev_coredumpsg() method. We still copy the data from the old way of generating it, but neither hold on to vmalloc'ed data for a long time, nor do we pin the module now. Signed-off-by: Aviya Erenfeld [rewrite commit message] Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho --- .../net/wireless/intel/iwlwifi/mvm/fw-dbg.c | 100 ++++++++++-------- 1 file changed, 55 insertions(+), 45 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c index d89d0a1fd34e..2e8e3e8e30a3 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c @@ -70,49 +70,6 @@ #include "iwl-prph.h" #include "iwl-csr.h" -static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count, - void *data, size_t datalen) -{ - const struct iwl_mvm_dump_ptrs *dump_ptrs = data; - ssize_t bytes_read; - ssize_t bytes_read_trans; - - if (offset < dump_ptrs->op_mode_len) { - bytes_read = min_t(ssize_t, count, - dump_ptrs->op_mode_len - offset); - memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset, - bytes_read); - offset += bytes_read; - count -= bytes_read; - - if (count == 0) - return bytes_read; - } else { - bytes_read = 0; - } - - if (!dump_ptrs->trans_ptr) - return bytes_read; - - offset -= dump_ptrs->op_mode_len; - bytes_read_trans = min_t(ssize_t, count, - dump_ptrs->trans_ptr->len - offset); - memcpy(buffer + bytes_read, - (u8 *)dump_ptrs->trans_ptr->data + offset, - bytes_read_trans); - - return bytes_read + bytes_read_trans; -} - -static void iwl_mvm_free_coredump(void *data) -{ - const struct iwl_mvm_dump_ptrs *fw_error_dump = data; - - vfree(fw_error_dump->op_mode_ptr); - vfree(fw_error_dump->trans_ptr); - kfree(fw_error_dump); -} - #define RADIO_REG_MAX_READ 0x2ad static void iwl_mvm_read_radio_reg(struct iwl_mvm *mvm, struct iwl_fw_error_dump_data **dump_data) @@ -491,6 +448,43 @@ static u32 iwl_dump_prph(struct iwl_trans *trans, return prph_len; } +/* + * alloc_sgtable - allocates scallerlist table in the given size, + * fills it with pages and returns it + * @size: the size (in bytes) of the table +*/ +static struct scatterlist *alloc_sgtable(int size) +{ + int alloc_size, nents, i; + struct page *new_page; + struct scatterlist *iter; + struct scatterlist *table; + + nents = DIV_ROUND_UP(size, PAGE_SIZE); + table = kcalloc(nents, sizeof(*table), GFP_KERNEL); + if (!table) + return NULL; + sg_init_table(table, nents); + iter = table; + for_each_sg(table, iter, sg_nents(table), i) { + new_page = alloc_page(GFP_KERNEL); + if (!new_page) { + /* release all previous allocated pages in the table */ + iter = table; + for_each_sg(table, iter, sg_nents(table), i) { + new_page = sg_page(iter); + if (new_page) + __free_page(new_page); + } + return NULL; + } + alloc_size = min_t(int, size, PAGE_SIZE); + size -= PAGE_SIZE; + sg_set_page(iter, new_page, alloc_size, 0); + } + return table; +} + void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) { struct iwl_fw_error_dump_file *dump_file; @@ -499,6 +493,7 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) struct iwl_fw_error_dump_mem *dump_mem; struct iwl_fw_error_dump_trigger_desc *dump_trig; struct iwl_mvm_dump_ptrs *fw_error_dump; + struct scatterlist *sg_dump_data; u32 sram_len, sram_ofs; struct iwl_fw_dbg_mem_seg_tlv * const *fw_dbg_mem = mvm->fw->dbg_mem_tlv; @@ -815,8 +810,23 @@ dump_trans_data: file_len += fw_error_dump->trans_ptr->len; dump_file->file_len = cpu_to_le32(file_len); - dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0, - GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump); + sg_dump_data = alloc_sgtable(file_len); + if (sg_dump_data) { + sg_pcopy_from_buffer(sg_dump_data, + sg_nents(sg_dump_data), + fw_error_dump->op_mode_ptr, + fw_error_dump->op_mode_len, 0); + sg_pcopy_from_buffer(sg_dump_data, + sg_nents(sg_dump_data), + fw_error_dump->trans_ptr->data, + fw_error_dump->trans_ptr->len, + fw_error_dump->op_mode_len); + dev_coredumpsg(mvm->trans->dev, sg_dump_data, file_len, + GFP_KERNEL); + } + vfree(fw_error_dump->op_mode_ptr); + vfree(fw_error_dump->trans_ptr); + kfree(fw_error_dump); out: iwl_mvm_free_fw_dump_desc(mvm);