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3936 lines
107 KiB
3936 lines
107 KiB
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause |
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/* |
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* Copyright (C) 2012-2015, 2018-2021 Intel Corporation |
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* Copyright (C) 2013-2015 Intel Mobile Communications GmbH |
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* Copyright (C) 2016-2017 Intel Deutschland GmbH |
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*/ |
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#include <net/mac80211.h> |
|
|
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#include "mvm.h" |
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#include "sta.h" |
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#include "rs.h" |
|
|
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/* |
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* New version of ADD_STA_sta command added new fields at the end of the |
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* structure, so sending the size of the relevant API's structure is enough to |
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* support both API versions. |
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*/ |
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static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) |
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{ |
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if (iwl_mvm_has_new_rx_api(mvm) || |
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fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) |
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return sizeof(struct iwl_mvm_add_sta_cmd); |
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else |
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return sizeof(struct iwl_mvm_add_sta_cmd_v7); |
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} |
|
|
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static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, |
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enum nl80211_iftype iftype) |
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{ |
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int sta_id; |
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u32 reserved_ids = 0; |
|
|
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BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32); |
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WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); |
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|
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lockdep_assert_held(&mvm->mutex); |
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|
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/* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ |
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if (iftype != NL80211_IFTYPE_STATION) |
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reserved_ids = BIT(0); |
|
|
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/* Don't take rcu_read_lock() since we are protected by mvm->mutex */ |
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for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { |
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if (BIT(sta_id) & reserved_ids) |
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continue; |
|
|
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if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
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lockdep_is_held(&mvm->mutex))) |
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return sta_id; |
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} |
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return IWL_MVM_INVALID_STA; |
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} |
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|
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/* send station add/update command to firmware */ |
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int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
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bool update, unsigned int flags) |
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{ |
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struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
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struct iwl_mvm_add_sta_cmd add_sta_cmd = { |
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.sta_id = mvm_sta->sta_id, |
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.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), |
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.add_modify = update ? 1 : 0, |
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.station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | |
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STA_FLG_MIMO_EN_MSK | |
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STA_FLG_RTS_MIMO_PROT), |
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.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), |
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}; |
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int ret; |
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u32 status; |
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u32 agg_size = 0, mpdu_dens = 0; |
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|
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if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) |
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add_sta_cmd.station_type = mvm_sta->sta_type; |
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|
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if (!update || (flags & STA_MODIFY_QUEUES)) { |
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memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); |
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|
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if (!iwl_mvm_has_new_tx_api(mvm)) { |
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add_sta_cmd.tfd_queue_msk = |
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cpu_to_le32(mvm_sta->tfd_queue_msk); |
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|
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if (flags & STA_MODIFY_QUEUES) |
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add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; |
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} else { |
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WARN_ON(flags & STA_MODIFY_QUEUES); |
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} |
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} |
|
|
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switch (sta->bandwidth) { |
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case IEEE80211_STA_RX_BW_160: |
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); |
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fallthrough; |
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case IEEE80211_STA_RX_BW_80: |
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); |
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fallthrough; |
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case IEEE80211_STA_RX_BW_40: |
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); |
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fallthrough; |
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case IEEE80211_STA_RX_BW_20: |
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if (sta->ht_cap.ht_supported) |
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add_sta_cmd.station_flags |= |
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cpu_to_le32(STA_FLG_FAT_EN_20MHZ); |
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break; |
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} |
|
|
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switch (sta->rx_nss) { |
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case 1: |
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); |
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break; |
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case 2: |
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); |
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break; |
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case 3 ... 8: |
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); |
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break; |
|
} |
|
|
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switch (sta->smps_mode) { |
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case IEEE80211_SMPS_AUTOMATIC: |
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case IEEE80211_SMPS_NUM_MODES: |
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WARN_ON(1); |
|
break; |
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case IEEE80211_SMPS_STATIC: |
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/* override NSS */ |
|
add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); |
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); |
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break; |
|
case IEEE80211_SMPS_DYNAMIC: |
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); |
|
break; |
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case IEEE80211_SMPS_OFF: |
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/* nothing */ |
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break; |
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} |
|
|
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if (sta->ht_cap.ht_supported) { |
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add_sta_cmd.station_flags_msk |= |
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cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | |
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STA_FLG_AGG_MPDU_DENS_MSK); |
|
|
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mpdu_dens = sta->ht_cap.ampdu_density; |
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} |
|
|
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if (mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) { |
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add_sta_cmd.station_flags_msk |= |
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cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | |
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STA_FLG_AGG_MPDU_DENS_MSK); |
|
|
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mpdu_dens = le16_get_bits(sta->he_6ghz_capa.capa, |
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IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); |
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agg_size = le16_get_bits(sta->he_6ghz_capa.capa, |
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IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); |
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} else |
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if (sta->vht_cap.vht_supported) { |
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agg_size = sta->vht_cap.cap & |
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IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; |
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agg_size >>= |
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IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; |
|
} else if (sta->ht_cap.ht_supported) { |
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agg_size = sta->ht_cap.ampdu_factor; |
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} |
|
|
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/* D6.0 10.12.2 A-MPDU length limit rules |
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* A STA indicates the maximum length of the A-MPDU preEOF padding |
|
* that it can receive in an HE PPDU in the Maximum A-MPDU Length |
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* Exponent field in its HT Capabilities, VHT Capabilities, |
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* and HE 6 GHz Band Capabilities elements (if present) and the |
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* Maximum AMPDU Length Exponent Extension field in its HE |
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* Capabilities element |
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*/ |
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if (sta->he_cap.has_he) |
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agg_size += u8_get_bits(sta->he_cap.he_cap_elem.mac_cap_info[3], |
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IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); |
|
|
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/* Limit to max A-MPDU supported by FW */ |
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if (agg_size > (STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT)) |
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agg_size = (STA_FLG_MAX_AGG_SIZE_4M >> |
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STA_FLG_MAX_AGG_SIZE_SHIFT); |
|
|
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add_sta_cmd.station_flags |= |
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cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); |
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add_sta_cmd.station_flags |= |
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cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); |
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if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) |
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add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); |
|
|
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if (sta->wme) { |
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add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; |
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|
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if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
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add_sta_cmd.uapsd_acs |= BIT(AC_BK); |
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if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
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add_sta_cmd.uapsd_acs |= BIT(AC_BE); |
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if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
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add_sta_cmd.uapsd_acs |= BIT(AC_VI); |
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if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
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add_sta_cmd.uapsd_acs |= BIT(AC_VO); |
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add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; |
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add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; |
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} |
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|
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status = ADD_STA_SUCCESS; |
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ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
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iwl_mvm_add_sta_cmd_size(mvm), |
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&add_sta_cmd, &status); |
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if (ret) |
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return ret; |
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|
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switch (status & IWL_ADD_STA_STATUS_MASK) { |
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case ADD_STA_SUCCESS: |
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IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); |
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break; |
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default: |
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ret = -EIO; |
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IWL_ERR(mvm, "ADD_STA failed\n"); |
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break; |
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} |
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|
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return ret; |
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} |
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|
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static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) |
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{ |
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struct iwl_mvm_baid_data *data = |
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from_timer(data, t, session_timer); |
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struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; |
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struct iwl_mvm_baid_data *ba_data; |
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struct ieee80211_sta *sta; |
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struct iwl_mvm_sta *mvm_sta; |
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unsigned long timeout; |
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|
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rcu_read_lock(); |
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|
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ba_data = rcu_dereference(*rcu_ptr); |
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|
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if (WARN_ON(!ba_data)) |
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goto unlock; |
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|
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if (!ba_data->timeout) |
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goto unlock; |
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|
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timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); |
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if (time_is_after_jiffies(timeout)) { |
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mod_timer(&ba_data->session_timer, timeout); |
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goto unlock; |
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} |
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|
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/* Timer expired */ |
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sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); |
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|
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/* |
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* sta should be valid unless the following happens: |
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* The firmware asserts which triggers a reconfig flow, but |
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* the reconfig fails before we set the pointer to sta into |
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* the fw_id_to_mac_id pointer table. Mac80211 can't stop |
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* A-MDPU and hence the timer continues to run. Then, the |
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* timer expires and sta is NULL. |
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*/ |
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if (!sta) |
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goto unlock; |
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|
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mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
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ieee80211_rx_ba_timer_expired(mvm_sta->vif, |
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sta->addr, ba_data->tid); |
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unlock: |
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rcu_read_unlock(); |
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} |
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|
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/* Disable aggregations for a bitmap of TIDs for a given station */ |
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static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, |
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unsigned long disable_agg_tids, |
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bool remove_queue) |
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{ |
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struct iwl_mvm_add_sta_cmd cmd = {}; |
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struct ieee80211_sta *sta; |
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struct iwl_mvm_sta *mvmsta; |
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u32 status; |
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u8 sta_id; |
|
|
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if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
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return -EINVAL; |
|
|
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sta_id = mvm->queue_info[queue].ra_sta_id; |
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|
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rcu_read_lock(); |
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|
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sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); |
|
|
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if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { |
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rcu_read_unlock(); |
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return -EINVAL; |
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} |
|
|
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mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
|
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mvmsta->tid_disable_agg |= disable_agg_tids; |
|
|
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cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); |
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cmd.sta_id = mvmsta->sta_id; |
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cmd.add_modify = STA_MODE_MODIFY; |
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cmd.modify_mask = STA_MODIFY_QUEUES; |
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if (disable_agg_tids) |
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cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; |
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if (remove_queue) |
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cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; |
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cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); |
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cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); |
|
|
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rcu_read_unlock(); |
|
|
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/* Notify FW of queue removal from the STA queues */ |
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status = ADD_STA_SUCCESS; |
|
return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
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iwl_mvm_add_sta_cmd_size(mvm), |
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&cmd, &status); |
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} |
|
|
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static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
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int queue, u8 tid, u8 flags) |
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{ |
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struct iwl_scd_txq_cfg_cmd cmd = { |
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.scd_queue = queue, |
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.action = SCD_CFG_DISABLE_QUEUE, |
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}; |
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int ret; |
|
|
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if (iwl_mvm_has_new_tx_api(mvm)) { |
|
iwl_trans_txq_free(mvm->trans, queue); |
|
|
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return 0; |
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} |
|
|
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if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) |
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return 0; |
|
|
|
mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); |
|
|
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cmd.action = mvm->queue_info[queue].tid_bitmap ? |
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SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; |
|
if (cmd.action == SCD_CFG_DISABLE_QUEUE) |
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mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"Disabling TXQ #%d tids=0x%x\n", |
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queue, |
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mvm->queue_info[queue].tid_bitmap); |
|
|
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/* If the queue is still enabled - nothing left to do in this func */ |
|
if (cmd.action == SCD_CFG_ENABLE_QUEUE) |
|
return 0; |
|
|
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cmd.sta_id = mvm->queue_info[queue].ra_sta_id; |
|
cmd.tid = mvm->queue_info[queue].txq_tid; |
|
|
|
/* Make sure queue info is correct even though we overwrite it */ |
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WARN(mvm->queue_info[queue].tid_bitmap, |
|
"TXQ #%d info out-of-sync - tids=0x%x\n", |
|
queue, mvm->queue_info[queue].tid_bitmap); |
|
|
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/* If we are here - the queue is freed and we can zero out these vals */ |
|
mvm->queue_info[queue].tid_bitmap = 0; |
|
|
|
if (sta) { |
|
struct iwl_mvm_txq *mvmtxq = |
|
iwl_mvm_txq_from_tid(sta, tid); |
|
|
|
mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; |
|
} |
|
|
|
/* Regardless if this is a reserved TXQ for a STA - mark it as false */ |
|
mvm->queue_info[queue].reserved = false; |
|
|
|
iwl_trans_txq_disable(mvm->trans, queue, false); |
|
ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags, |
|
sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); |
|
|
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if (ret) |
|
IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", |
|
queue, ret); |
|
return ret; |
|
} |
|
|
|
static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) |
|
{ |
|
struct ieee80211_sta *sta; |
|
struct iwl_mvm_sta *mvmsta; |
|
unsigned long tid_bitmap; |
|
unsigned long agg_tids = 0; |
|
u8 sta_id; |
|
int tid; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
|
return -EINVAL; |
|
|
|
sta_id = mvm->queue_info[queue].ra_sta_id; |
|
tid_bitmap = mvm->queue_info[queue].tid_bitmap; |
|
|
|
sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
|
lockdep_is_held(&mvm->mutex)); |
|
|
|
if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) |
|
return -EINVAL; |
|
|
|
mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
|
|
spin_lock_bh(&mvmsta->lock); |
|
for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { |
|
if (mvmsta->tid_data[tid].state == IWL_AGG_ON) |
|
agg_tids |= BIT(tid); |
|
} |
|
spin_unlock_bh(&mvmsta->lock); |
|
|
|
return agg_tids; |
|
} |
|
|
|
/* |
|
* Remove a queue from a station's resources. |
|
* Note that this only marks as free. It DOESN'T delete a BA agreement, and |
|
* doesn't disable the queue |
|
*/ |
|
static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) |
|
{ |
|
struct ieee80211_sta *sta; |
|
struct iwl_mvm_sta *mvmsta; |
|
unsigned long tid_bitmap; |
|
unsigned long disable_agg_tids = 0; |
|
u8 sta_id; |
|
int tid; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
|
return -EINVAL; |
|
|
|
sta_id = mvm->queue_info[queue].ra_sta_id; |
|
tid_bitmap = mvm->queue_info[queue].tid_bitmap; |
|
|
|
rcu_read_lock(); |
|
|
|
sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); |
|
|
|
if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { |
|
rcu_read_unlock(); |
|
return 0; |
|
} |
|
|
|
mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
|
|
spin_lock_bh(&mvmsta->lock); |
|
/* Unmap MAC queues and TIDs from this queue */ |
|
for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { |
|
struct iwl_mvm_txq *mvmtxq = |
|
iwl_mvm_txq_from_tid(sta, tid); |
|
|
|
if (mvmsta->tid_data[tid].state == IWL_AGG_ON) |
|
disable_agg_tids |= BIT(tid); |
|
mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; |
|
|
|
mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; |
|
} |
|
|
|
mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ |
|
spin_unlock_bh(&mvmsta->lock); |
|
|
|
rcu_read_unlock(); |
|
|
|
/* |
|
* The TX path may have been using this TXQ_ID from the tid_data, |
|
* so make sure it's no longer running so that we can safely reuse |
|
* this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE |
|
* above, but nothing guarantees we've stopped using them. Thus, |
|
* without this, we could get to iwl_mvm_disable_txq() and remove |
|
* the queue while still sending frames to it. |
|
*/ |
|
synchronize_net(); |
|
|
|
return disable_agg_tids; |
|
} |
|
|
|
static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, |
|
struct ieee80211_sta *old_sta, |
|
u8 new_sta_id) |
|
{ |
|
struct iwl_mvm_sta *mvmsta; |
|
u8 sta_id, tid; |
|
unsigned long disable_agg_tids = 0; |
|
bool same_sta; |
|
int ret; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
|
return -EINVAL; |
|
|
|
sta_id = mvm->queue_info[queue].ra_sta_id; |
|
tid = mvm->queue_info[queue].txq_tid; |
|
|
|
same_sta = sta_id == new_sta_id; |
|
|
|
mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); |
|
if (WARN_ON(!mvmsta)) |
|
return -EINVAL; |
|
|
|
disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); |
|
/* Disable the queue */ |
|
if (disable_agg_tids) |
|
iwl_mvm_invalidate_sta_queue(mvm, queue, |
|
disable_agg_tids, false); |
|
|
|
ret = iwl_mvm_disable_txq(mvm, old_sta, queue, tid, 0); |
|
if (ret) { |
|
IWL_ERR(mvm, |
|
"Failed to free inactive queue %d (ret=%d)\n", |
|
queue, ret); |
|
|
|
return ret; |
|
} |
|
|
|
/* If TXQ is allocated to another STA, update removal in FW */ |
|
if (!same_sta) |
|
iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); |
|
|
|
return 0; |
|
} |
|
|
|
static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, |
|
unsigned long tfd_queue_mask, u8 ac) |
|
{ |
|
int queue = 0; |
|
u8 ac_to_queue[IEEE80211_NUM_ACS]; |
|
int i; |
|
|
|
/* |
|
* This protects us against grabbing a queue that's being reconfigured |
|
* by the inactivity checker. |
|
*/ |
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
|
return -EINVAL; |
|
|
|
memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); |
|
|
|
/* See what ACs the existing queues for this STA have */ |
|
for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { |
|
/* Only DATA queues can be shared */ |
|
if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && |
|
i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) |
|
continue; |
|
|
|
ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; |
|
} |
|
|
|
/* |
|
* The queue to share is chosen only from DATA queues as follows (in |
|
* descending priority): |
|
* 1. An AC_BE queue |
|
* 2. Same AC queue |
|
* 3. Highest AC queue that is lower than new AC |
|
* 4. Any existing AC (there always is at least 1 DATA queue) |
|
*/ |
|
|
|
/* Priority 1: An AC_BE queue */ |
|
if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) |
|
queue = ac_to_queue[IEEE80211_AC_BE]; |
|
/* Priority 2: Same AC queue */ |
|
else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) |
|
queue = ac_to_queue[ac]; |
|
/* Priority 3a: If new AC is VO and VI exists - use VI */ |
|
else if (ac == IEEE80211_AC_VO && |
|
ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) |
|
queue = ac_to_queue[IEEE80211_AC_VI]; |
|
/* Priority 3b: No BE so only AC less than the new one is BK */ |
|
else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) |
|
queue = ac_to_queue[IEEE80211_AC_BK]; |
|
/* Priority 4a: No BE nor BK - use VI if exists */ |
|
else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) |
|
queue = ac_to_queue[IEEE80211_AC_VI]; |
|
/* Priority 4b: No BE, BK nor VI - use VO if exists */ |
|
else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) |
|
queue = ac_to_queue[IEEE80211_AC_VO]; |
|
|
|
/* Make sure queue found (or not) is legal */ |
|
if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && |
|
!iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && |
|
(queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { |
|
IWL_ERR(mvm, "No DATA queues available to share\n"); |
|
return -ENOSPC; |
|
} |
|
|
|
return queue; |
|
} |
|
|
|
/* |
|
* If a given queue has a higher AC than the TID stream that is being compared |
|
* to, the queue needs to be redirected to the lower AC. This function does that |
|
* in such a case, otherwise - if no redirection required - it does nothing, |
|
* unless the %force param is true. |
|
*/ |
|
static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, |
|
int ac, int ssn, unsigned int wdg_timeout, |
|
bool force, struct iwl_mvm_txq *txq) |
|
{ |
|
struct iwl_scd_txq_cfg_cmd cmd = { |
|
.scd_queue = queue, |
|
.action = SCD_CFG_DISABLE_QUEUE, |
|
}; |
|
bool shared_queue; |
|
int ret; |
|
|
|
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
|
return -EINVAL; |
|
|
|
/* |
|
* If the AC is lower than current one - FIFO needs to be redirected to |
|
* the lowest one of the streams in the queue. Check if this is needed |
|
* here. |
|
* Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with |
|
* value 3 and VO with value 0, so to check if ac X is lower than ac Y |
|
* we need to check if the numerical value of X is LARGER than of Y. |
|
*/ |
|
if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { |
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"No redirection needed on TXQ #%d\n", |
|
queue); |
|
return 0; |
|
} |
|
|
|
cmd.sta_id = mvm->queue_info[queue].ra_sta_id; |
|
cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; |
|
cmd.tid = mvm->queue_info[queue].txq_tid; |
|
shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", |
|
queue, iwl_mvm_ac_to_tx_fifo[ac]); |
|
|
|
/* Stop the queue and wait for it to empty */ |
|
txq->stopped = true; |
|
|
|
ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); |
|
if (ret) { |
|
IWL_ERR(mvm, "Error draining queue %d before reconfig\n", |
|
queue); |
|
ret = -EIO; |
|
goto out; |
|
} |
|
|
|
/* Before redirecting the queue we need to de-activate it */ |
|
iwl_trans_txq_disable(mvm->trans, queue, false); |
|
ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); |
|
if (ret) |
|
IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, |
|
ret); |
|
|
|
/* Make sure the SCD wrptr is correctly set before reconfiguring */ |
|
iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); |
|
|
|
/* Update the TID "owner" of the queue */ |
|
mvm->queue_info[queue].txq_tid = tid; |
|
|
|
/* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ |
|
|
|
/* Redirect to lower AC */ |
|
iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], |
|
cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); |
|
|
|
/* Update AC marking of the queue */ |
|
mvm->queue_info[queue].mac80211_ac = ac; |
|
|
|
/* |
|
* Mark queue as shared in transport if shared |
|
* Note this has to be done after queue enablement because enablement |
|
* can also set this value, and there is no indication there to shared |
|
* queues |
|
*/ |
|
if (shared_queue) |
|
iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); |
|
|
|
out: |
|
/* Continue using the queue */ |
|
txq->stopped = false; |
|
|
|
return ret; |
|
} |
|
|
|
static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, |
|
u8 minq, u8 maxq) |
|
{ |
|
int i; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, |
|
"max queue %d >= num_of_queues (%d)", maxq, |
|
mvm->trans->trans_cfg->base_params->num_of_queues)) |
|
maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; |
|
|
|
/* This should not be hit with new TX path */ |
|
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
|
return -ENOSPC; |
|
|
|
/* Start by looking for a free queue */ |
|
for (i = minq; i <= maxq; i++) |
|
if (mvm->queue_info[i].tid_bitmap == 0 && |
|
mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) |
|
return i; |
|
|
|
return -ENOSPC; |
|
} |
|
|
|
static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, |
|
u8 sta_id, u8 tid, unsigned int timeout) |
|
{ |
|
int queue, size = max_t(u32, IWL_DEFAULT_QUEUE_SIZE, |
|
mvm->trans->cfg->min_256_ba_txq_size); |
|
|
|
if (tid == IWL_MAX_TID_COUNT) { |
|
tid = IWL_MGMT_TID; |
|
size = max_t(u32, IWL_MGMT_QUEUE_SIZE, |
|
mvm->trans->cfg->min_txq_size); |
|
} |
|
|
|
do { |
|
__le16 enable = cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE); |
|
|
|
queue = iwl_trans_txq_alloc(mvm->trans, enable, |
|
sta_id, tid, SCD_QUEUE_CFG, |
|
size, timeout); |
|
|
|
if (queue < 0) |
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"Failed allocating TXQ of size %d for sta %d tid %d, ret: %d\n", |
|
size, sta_id, tid, queue); |
|
size /= 2; |
|
} while (queue < 0 && size >= 16); |
|
|
|
if (queue < 0) |
|
return queue; |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", |
|
queue, sta_id, tid); |
|
|
|
return queue; |
|
} |
|
|
|
static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, |
|
struct ieee80211_sta *sta, u8 ac, |
|
int tid) |
|
{ |
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
struct iwl_mvm_txq *mvmtxq = |
|
iwl_mvm_txq_from_tid(sta, tid); |
|
unsigned int wdg_timeout = |
|
iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); |
|
int queue = -1; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"Allocating queue for sta %d on tid %d\n", |
|
mvmsta->sta_id, tid); |
|
queue = iwl_mvm_tvqm_enable_txq(mvm, mvmsta->sta_id, tid, wdg_timeout); |
|
if (queue < 0) |
|
return queue; |
|
|
|
mvmtxq->txq_id = queue; |
|
mvm->tvqm_info[queue].txq_tid = tid; |
|
mvm->tvqm_info[queue].sta_id = mvmsta->sta_id; |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); |
|
|
|
spin_lock_bh(&mvmsta->lock); |
|
mvmsta->tid_data[tid].txq_id = queue; |
|
spin_unlock_bh(&mvmsta->lock); |
|
|
|
return 0; |
|
} |
|
|
|
static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, |
|
struct ieee80211_sta *sta, |
|
int queue, u8 sta_id, u8 tid) |
|
{ |
|
bool enable_queue = true; |
|
|
|
/* Make sure this TID isn't already enabled */ |
|
if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { |
|
IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", |
|
queue, tid); |
|
return false; |
|
} |
|
|
|
/* Update mappings and refcounts */ |
|
if (mvm->queue_info[queue].tid_bitmap) |
|
enable_queue = false; |
|
|
|
mvm->queue_info[queue].tid_bitmap |= BIT(tid); |
|
mvm->queue_info[queue].ra_sta_id = sta_id; |
|
|
|
if (enable_queue) { |
|
if (tid != IWL_MAX_TID_COUNT) |
|
mvm->queue_info[queue].mac80211_ac = |
|
tid_to_mac80211_ac[tid]; |
|
else |
|
mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; |
|
|
|
mvm->queue_info[queue].txq_tid = tid; |
|
} |
|
|
|
if (sta) { |
|
struct iwl_mvm_txq *mvmtxq = |
|
iwl_mvm_txq_from_tid(sta, tid); |
|
|
|
mvmtxq->txq_id = queue; |
|
} |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"Enabling TXQ #%d tids=0x%x\n", |
|
queue, mvm->queue_info[queue].tid_bitmap); |
|
|
|
return enable_queue; |
|
} |
|
|
|
static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
|
int queue, u16 ssn, |
|
const struct iwl_trans_txq_scd_cfg *cfg, |
|
unsigned int wdg_timeout) |
|
{ |
|
struct iwl_scd_txq_cfg_cmd cmd = { |
|
.scd_queue = queue, |
|
.action = SCD_CFG_ENABLE_QUEUE, |
|
.window = cfg->frame_limit, |
|
.sta_id = cfg->sta_id, |
|
.ssn = cpu_to_le16(ssn), |
|
.tx_fifo = cfg->fifo, |
|
.aggregate = cfg->aggregate, |
|
.tid = cfg->tid, |
|
}; |
|
bool inc_ssn; |
|
|
|
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
|
return false; |
|
|
|
/* Send the enabling command if we need to */ |
|
if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) |
|
return false; |
|
|
|
inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, |
|
NULL, wdg_timeout); |
|
if (inc_ssn) |
|
le16_add_cpu(&cmd.ssn, 1); |
|
|
|
WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), |
|
"Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); |
|
|
|
return inc_ssn; |
|
} |
|
|
|
static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) |
|
{ |
|
struct iwl_scd_txq_cfg_cmd cmd = { |
|
.scd_queue = queue, |
|
.action = SCD_CFG_UPDATE_QUEUE_TID, |
|
}; |
|
int tid; |
|
unsigned long tid_bitmap; |
|
int ret; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
|
return; |
|
|
|
tid_bitmap = mvm->queue_info[queue].tid_bitmap; |
|
|
|
if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) |
|
return; |
|
|
|
/* Find any TID for queue */ |
|
tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); |
|
cmd.tid = tid; |
|
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) { |
|
IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", |
|
queue, ret); |
|
return; |
|
} |
|
|
|
mvm->queue_info[queue].txq_tid = tid; |
|
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) |
|
{ |
|
struct ieee80211_sta *sta; |
|
struct iwl_mvm_sta *mvmsta; |
|
u8 sta_id; |
|
int tid = -1; |
|
unsigned long tid_bitmap; |
|
unsigned int wdg_timeout; |
|
int ssn; |
|
int ret = true; |
|
|
|
/* queue sharing is disabled on new TX path */ |
|
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
|
return; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
sta_id = mvm->queue_info[queue].ra_sta_id; |
|
tid_bitmap = mvm->queue_info[queue].tid_bitmap; |
|
|
|
/* Find TID for queue, and make sure it is the only one on the queue */ |
|
tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); |
|
if (tid_bitmap != BIT(tid)) { |
|
IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", |
|
queue, tid_bitmap); |
|
return; |
|
} |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, |
|
tid); |
|
|
|
sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
|
lockdep_is_held(&mvm->mutex)); |
|
|
|
if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) |
|
return; |
|
|
|
mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); |
|
|
|
ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); |
|
|
|
ret = iwl_mvm_redirect_queue(mvm, queue, tid, |
|
tid_to_mac80211_ac[tid], ssn, |
|
wdg_timeout, true, |
|
iwl_mvm_txq_from_tid(sta, tid)); |
|
if (ret) { |
|
IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); |
|
return; |
|
} |
|
|
|
/* If aggs should be turned back on - do it */ |
|
if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { |
|
struct iwl_mvm_add_sta_cmd cmd = {0}; |
|
|
|
mvmsta->tid_disable_agg &= ~BIT(tid); |
|
|
|
cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); |
|
cmd.sta_id = mvmsta->sta_id; |
|
cmd.add_modify = STA_MODE_MODIFY; |
|
cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; |
|
cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); |
|
cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); |
|
|
|
ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
|
iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
|
if (!ret) { |
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"TXQ #%d is now aggregated again\n", |
|
queue); |
|
|
|
/* Mark queue intenally as aggregating again */ |
|
iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); |
|
} |
|
} |
|
|
|
mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; |
|
} |
|
|
|
/* |
|
* Remove inactive TIDs of a given queue. |
|
* If all queue TIDs are inactive - mark the queue as inactive |
|
* If only some the queue TIDs are inactive - unmap them from the queue |
|
* |
|
* Returns %true if all TIDs were removed and the queue could be reused. |
|
*/ |
|
static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, |
|
struct iwl_mvm_sta *mvmsta, int queue, |
|
unsigned long tid_bitmap, |
|
unsigned long *unshare_queues, |
|
unsigned long *changetid_queues) |
|
{ |
|
int tid; |
|
|
|
lockdep_assert_held(&mvmsta->lock); |
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
|
return false; |
|
|
|
/* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ |
|
for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { |
|
/* If some TFDs are still queued - don't mark TID as inactive */ |
|
if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) |
|
tid_bitmap &= ~BIT(tid); |
|
|
|
/* Don't mark as inactive any TID that has an active BA */ |
|
if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) |
|
tid_bitmap &= ~BIT(tid); |
|
} |
|
|
|
/* If all TIDs in the queue are inactive - return it can be reused */ |
|
if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { |
|
IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); |
|
return true; |
|
} |
|
|
|
/* |
|
* If we are here, this is a shared queue and not all TIDs timed-out. |
|
* Remove the ones that did. |
|
*/ |
|
for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { |
|
u16 tid_bitmap; |
|
|
|
mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; |
|
mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); |
|
|
|
tid_bitmap = mvm->queue_info[queue].tid_bitmap; |
|
|
|
/* |
|
* We need to take into account a situation in which a TXQ was |
|
* allocated to TID x, and then turned shared by adding TIDs y |
|
* and z. If TID x becomes inactive and is removed from the TXQ, |
|
* ownership must be given to one of the remaining TIDs. |
|
* This is mainly because if TID x continues - a new queue can't |
|
* be allocated for it as long as it is an owner of another TXQ. |
|
* |
|
* Mark this queue in the right bitmap, we'll send the command |
|
* to the firmware later. |
|
*/ |
|
if (!(tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) |
|
set_bit(queue, changetid_queues); |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"Removing inactive TID %d from shared Q:%d\n", |
|
tid, queue); |
|
} |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"TXQ #%d left with tid bitmap 0x%x\n", queue, |
|
mvm->queue_info[queue].tid_bitmap); |
|
|
|
/* |
|
* There may be different TIDs with the same mac queues, so make |
|
* sure all TIDs have existing corresponding mac queues enabled |
|
*/ |
|
tid_bitmap = mvm->queue_info[queue].tid_bitmap; |
|
|
|
/* If the queue is marked as shared - "unshare" it */ |
|
if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && |
|
mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { |
|
IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", |
|
queue); |
|
set_bit(queue, unshare_queues); |
|
} |
|
|
|
return false; |
|
} |
|
|
|
/* |
|
* Check for inactivity - this includes checking if any queue |
|
* can be unshared and finding one (and only one) that can be |
|
* reused. |
|
* This function is also invoked as a sort of clean-up task, |
|
* in which case @alloc_for_sta is IWL_MVM_INVALID_STA. |
|
* |
|
* Returns the queue number, or -ENOSPC. |
|
*/ |
|
static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) |
|
{ |
|
unsigned long now = jiffies; |
|
unsigned long unshare_queues = 0; |
|
unsigned long changetid_queues = 0; |
|
int i, ret, free_queue = -ENOSPC; |
|
struct ieee80211_sta *queue_owner = NULL; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (iwl_mvm_has_new_tx_api(mvm)) |
|
return -ENOSPC; |
|
|
|
rcu_read_lock(); |
|
|
|
/* we skip the CMD queue below by starting at 1 */ |
|
BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); |
|
|
|
for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { |
|
struct ieee80211_sta *sta; |
|
struct iwl_mvm_sta *mvmsta; |
|
u8 sta_id; |
|
int tid; |
|
unsigned long inactive_tid_bitmap = 0; |
|
unsigned long queue_tid_bitmap; |
|
|
|
queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; |
|
if (!queue_tid_bitmap) |
|
continue; |
|
|
|
/* If TXQ isn't in active use anyway - nothing to do here... */ |
|
if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && |
|
mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) |
|
continue; |
|
|
|
/* Check to see if there are inactive TIDs on this queue */ |
|
for_each_set_bit(tid, &queue_tid_bitmap, |
|
IWL_MAX_TID_COUNT + 1) { |
|
if (time_after(mvm->queue_info[i].last_frame_time[tid] + |
|
IWL_MVM_DQA_QUEUE_TIMEOUT, now)) |
|
continue; |
|
|
|
inactive_tid_bitmap |= BIT(tid); |
|
} |
|
|
|
/* If all TIDs are active - finish check on this queue */ |
|
if (!inactive_tid_bitmap) |
|
continue; |
|
|
|
/* |
|
* If we are here - the queue hadn't been served recently and is |
|
* in use |
|
*/ |
|
|
|
sta_id = mvm->queue_info[i].ra_sta_id; |
|
sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); |
|
|
|
/* |
|
* If the STA doesn't exist anymore, it isn't an error. It could |
|
* be that it was removed since getting the queues, and in this |
|
* case it should've inactivated its queues anyway. |
|
*/ |
|
if (IS_ERR_OR_NULL(sta)) |
|
continue; |
|
|
|
mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
|
|
spin_lock_bh(&mvmsta->lock); |
|
ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, |
|
inactive_tid_bitmap, |
|
&unshare_queues, |
|
&changetid_queues); |
|
if (ret && free_queue < 0) { |
|
queue_owner = sta; |
|
free_queue = i; |
|
} |
|
/* only unlock sta lock - we still need the queue info lock */ |
|
spin_unlock_bh(&mvmsta->lock); |
|
} |
|
|
|
|
|
/* Reconfigure queues requiring reconfiguation */ |
|
for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) |
|
iwl_mvm_unshare_queue(mvm, i); |
|
for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) |
|
iwl_mvm_change_queue_tid(mvm, i); |
|
|
|
rcu_read_unlock(); |
|
|
|
if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { |
|
ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, |
|
alloc_for_sta); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
return free_queue; |
|
} |
|
|
|
static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, |
|
struct ieee80211_sta *sta, u8 ac, int tid) |
|
{ |
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
struct iwl_trans_txq_scd_cfg cfg = { |
|
.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), |
|
.sta_id = mvmsta->sta_id, |
|
.tid = tid, |
|
.frame_limit = IWL_FRAME_LIMIT, |
|
}; |
|
unsigned int wdg_timeout = |
|
iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); |
|
int queue = -1; |
|
unsigned long disable_agg_tids = 0; |
|
enum iwl_mvm_agg_state queue_state; |
|
bool shared_queue = false, inc_ssn; |
|
int ssn; |
|
unsigned long tfd_queue_mask; |
|
int ret; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (iwl_mvm_has_new_tx_api(mvm)) |
|
return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); |
|
|
|
spin_lock_bh(&mvmsta->lock); |
|
tfd_queue_mask = mvmsta->tfd_queue_msk; |
|
ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); |
|
spin_unlock_bh(&mvmsta->lock); |
|
|
|
if (tid == IWL_MAX_TID_COUNT) { |
|
queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, |
|
IWL_MVM_DQA_MIN_MGMT_QUEUE, |
|
IWL_MVM_DQA_MAX_MGMT_QUEUE); |
|
if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) |
|
IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", |
|
queue); |
|
|
|
/* If no such queue is found, we'll use a DATA queue instead */ |
|
} |
|
|
|
if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && |
|
(mvm->queue_info[mvmsta->reserved_queue].status == |
|
IWL_MVM_QUEUE_RESERVED)) { |
|
queue = mvmsta->reserved_queue; |
|
mvm->queue_info[queue].reserved = true; |
|
IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); |
|
} |
|
|
|
if (queue < 0) |
|
queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, |
|
IWL_MVM_DQA_MIN_DATA_QUEUE, |
|
IWL_MVM_DQA_MAX_DATA_QUEUE); |
|
if (queue < 0) { |
|
/* try harder - perhaps kill an inactive queue */ |
|
queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); |
|
} |
|
|
|
/* No free queue - we'll have to share */ |
|
if (queue <= 0) { |
|
queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); |
|
if (queue > 0) { |
|
shared_queue = true; |
|
mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; |
|
} |
|
} |
|
|
|
/* |
|
* Mark TXQ as ready, even though it hasn't been fully configured yet, |
|
* to make sure no one else takes it. |
|
* This will allow avoiding re-acquiring the lock at the end of the |
|
* configuration. On error we'll mark it back as free. |
|
*/ |
|
if (queue > 0 && !shared_queue) |
|
mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; |
|
|
|
/* This shouldn't happen - out of queues */ |
|
if (WARN_ON(queue <= 0)) { |
|
IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", |
|
tid, cfg.sta_id); |
|
return queue; |
|
} |
|
|
|
/* |
|
* Actual en/disablement of aggregations is through the ADD_STA HCMD, |
|
* but for configuring the SCD to send A-MPDUs we need to mark the queue |
|
* as aggregatable. |
|
* Mark all DATA queues as allowing to be aggregated at some point |
|
*/ |
|
cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || |
|
queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"Allocating %squeue #%d to sta %d on tid %d\n", |
|
shared_queue ? "shared " : "", queue, |
|
mvmsta->sta_id, tid); |
|
|
|
if (shared_queue) { |
|
/* Disable any open aggs on this queue */ |
|
disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); |
|
|
|
if (disable_agg_tids) { |
|
IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", |
|
queue); |
|
iwl_mvm_invalidate_sta_queue(mvm, queue, |
|
disable_agg_tids, false); |
|
} |
|
} |
|
|
|
inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); |
|
|
|
/* |
|
* Mark queue as shared in transport if shared |
|
* Note this has to be done after queue enablement because enablement |
|
* can also set this value, and there is no indication there to shared |
|
* queues |
|
*/ |
|
if (shared_queue) |
|
iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); |
|
|
|
spin_lock_bh(&mvmsta->lock); |
|
/* |
|
* This looks racy, but it is not. We have only one packet for |
|
* this ra/tid in our Tx path since we stop the Qdisc when we |
|
* need to allocate a new TFD queue. |
|
*/ |
|
if (inc_ssn) { |
|
mvmsta->tid_data[tid].seq_number += 0x10; |
|
ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; |
|
} |
|
mvmsta->tid_data[tid].txq_id = queue; |
|
mvmsta->tfd_queue_msk |= BIT(queue); |
|
queue_state = mvmsta->tid_data[tid].state; |
|
|
|
if (mvmsta->reserved_queue == queue) |
|
mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; |
|
spin_unlock_bh(&mvmsta->lock); |
|
|
|
if (!shared_queue) { |
|
ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); |
|
if (ret) |
|
goto out_err; |
|
|
|
/* If we need to re-enable aggregations... */ |
|
if (queue_state == IWL_AGG_ON) { |
|
ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); |
|
if (ret) |
|
goto out_err; |
|
} |
|
} else { |
|
/* Redirect queue, if needed */ |
|
ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, |
|
wdg_timeout, false, |
|
iwl_mvm_txq_from_tid(sta, tid)); |
|
if (ret) |
|
goto out_err; |
|
} |
|
|
|
return 0; |
|
|
|
out_err: |
|
iwl_mvm_disable_txq(mvm, sta, queue, tid, 0); |
|
|
|
return ret; |
|
} |
|
|
|
void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) |
|
{ |
|
struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, |
|
add_stream_wk); |
|
|
|
mutex_lock(&mvm->mutex); |
|
|
|
iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); |
|
|
|
while (!list_empty(&mvm->add_stream_txqs)) { |
|
struct iwl_mvm_txq *mvmtxq; |
|
struct ieee80211_txq *txq; |
|
u8 tid; |
|
|
|
mvmtxq = list_first_entry(&mvm->add_stream_txqs, |
|
struct iwl_mvm_txq, list); |
|
|
|
txq = container_of((void *)mvmtxq, struct ieee80211_txq, |
|
drv_priv); |
|
tid = txq->tid; |
|
if (tid == IEEE80211_NUM_TIDS) |
|
tid = IWL_MAX_TID_COUNT; |
|
|
|
/* |
|
* We can't really do much here, but if this fails we can't |
|
* transmit anyway - so just don't transmit the frame etc. |
|
* and let them back up ... we've tried our best to allocate |
|
* a queue in the function itself. |
|
*/ |
|
if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { |
|
list_del_init(&mvmtxq->list); |
|
continue; |
|
} |
|
|
|
list_del_init(&mvmtxq->list); |
|
local_bh_disable(); |
|
iwl_mvm_mac_itxq_xmit(mvm->hw, txq); |
|
local_bh_enable(); |
|
} |
|
|
|
mutex_unlock(&mvm->mutex); |
|
} |
|
|
|
static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, |
|
struct ieee80211_sta *sta, |
|
enum nl80211_iftype vif_type) |
|
{ |
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
int queue; |
|
|
|
/* queue reserving is disabled on new TX path */ |
|
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
|
return 0; |
|
|
|
/* run the general cleanup/unsharing of queues */ |
|
iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); |
|
|
|
/* Make sure we have free resources for this STA */ |
|
if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && |
|
!mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && |
|
(mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == |
|
IWL_MVM_QUEUE_FREE)) |
|
queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; |
|
else |
|
queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, |
|
IWL_MVM_DQA_MIN_DATA_QUEUE, |
|
IWL_MVM_DQA_MAX_DATA_QUEUE); |
|
if (queue < 0) { |
|
/* try again - this time kick out a queue if needed */ |
|
queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); |
|
if (queue < 0) { |
|
IWL_ERR(mvm, "No available queues for new station\n"); |
|
return -ENOSPC; |
|
} |
|
} |
|
mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; |
|
|
|
mvmsta->reserved_queue = queue; |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", |
|
queue, mvmsta->sta_id); |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* In DQA mode, after a HW restart the queues should be allocated as before, in |
|
* order to avoid race conditions when there are shared queues. This function |
|
* does the re-mapping and queue allocation. |
|
* |
|
* Note that re-enabling aggregations isn't done in this function. |
|
*/ |
|
static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
|
unsigned int wdg = |
|
iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); |
|
int i; |
|
struct iwl_trans_txq_scd_cfg cfg = { |
|
.sta_id = mvm_sta->sta_id, |
|
.frame_limit = IWL_FRAME_LIMIT, |
|
}; |
|
|
|
/* Make sure reserved queue is still marked as such (if allocated) */ |
|
if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) |
|
mvm->queue_info[mvm_sta->reserved_queue].status = |
|
IWL_MVM_QUEUE_RESERVED; |
|
|
|
for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { |
|
struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; |
|
int txq_id = tid_data->txq_id; |
|
int ac; |
|
|
|
if (txq_id == IWL_MVM_INVALID_QUEUE) |
|
continue; |
|
|
|
ac = tid_to_mac80211_ac[i]; |
|
|
|
if (iwl_mvm_has_new_tx_api(mvm)) { |
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"Re-mapping sta %d tid %d\n", |
|
mvm_sta->sta_id, i); |
|
txq_id = iwl_mvm_tvqm_enable_txq(mvm, mvm_sta->sta_id, |
|
i, wdg); |
|
/* |
|
* on failures, just set it to IWL_MVM_INVALID_QUEUE |
|
* to try again later, we have no other good way of |
|
* failing here |
|
*/ |
|
if (txq_id < 0) |
|
txq_id = IWL_MVM_INVALID_QUEUE; |
|
tid_data->txq_id = txq_id; |
|
|
|
/* |
|
* Since we don't set the seq number after reset, and HW |
|
* sets it now, FW reset will cause the seq num to start |
|
* at 0 again, so driver will need to update it |
|
* internally as well, so it keeps in sync with real val |
|
*/ |
|
tid_data->seq_number = 0; |
|
} else { |
|
u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
|
|
|
cfg.tid = i; |
|
cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); |
|
cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || |
|
txq_id == |
|
IWL_MVM_DQA_BSS_CLIENT_QUEUE); |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"Re-mapping sta %d tid %d to queue %d\n", |
|
mvm_sta->sta_id, i, txq_id); |
|
|
|
iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); |
|
mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; |
|
} |
|
} |
|
} |
|
|
|
static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, |
|
struct iwl_mvm_int_sta *sta, |
|
const u8 *addr, |
|
u16 mac_id, u16 color) |
|
{ |
|
struct iwl_mvm_add_sta_cmd cmd; |
|
int ret; |
|
u32 status = ADD_STA_SUCCESS; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
memset(&cmd, 0, sizeof(cmd)); |
|
cmd.sta_id = sta->sta_id; |
|
|
|
if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, ADD_STA, |
|
0) >= 12 && |
|
sta->type == IWL_STA_AUX_ACTIVITY) |
|
cmd.mac_id_n_color = cpu_to_le32(mac_id); |
|
else |
|
cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, |
|
color)); |
|
|
|
if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) |
|
cmd.station_type = sta->type; |
|
|
|
if (!iwl_mvm_has_new_tx_api(mvm)) |
|
cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); |
|
cmd.tid_disable_tx = cpu_to_le16(0xffff); |
|
|
|
if (addr) |
|
memcpy(cmd.addr, addr, ETH_ALEN); |
|
|
|
ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
|
iwl_mvm_add_sta_cmd_size(mvm), |
|
&cmd, &status); |
|
if (ret) |
|
return ret; |
|
|
|
switch (status & IWL_ADD_STA_STATUS_MASK) { |
|
case ADD_STA_SUCCESS: |
|
IWL_DEBUG_INFO(mvm, "Internal station added.\n"); |
|
return 0; |
|
default: |
|
ret = -EIO; |
|
IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", |
|
status); |
|
break; |
|
} |
|
return ret; |
|
} |
|
|
|
int iwl_mvm_add_sta(struct iwl_mvm *mvm, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
|
struct iwl_mvm_rxq_dup_data *dup_data; |
|
int i, ret, sta_id; |
|
bool sta_update = false; |
|
unsigned int sta_flags = 0; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) |
|
sta_id = iwl_mvm_find_free_sta_id(mvm, |
|
ieee80211_vif_type_p2p(vif)); |
|
else |
|
sta_id = mvm_sta->sta_id; |
|
|
|
if (sta_id == IWL_MVM_INVALID_STA) |
|
return -ENOSPC; |
|
|
|
spin_lock_init(&mvm_sta->lock); |
|
|
|
/* if this is a HW restart re-alloc existing queues */ |
|
if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { |
|
struct iwl_mvm_int_sta tmp_sta = { |
|
.sta_id = sta_id, |
|
.type = mvm_sta->sta_type, |
|
}; |
|
|
|
/* |
|
* First add an empty station since allocating |
|
* a queue requires a valid station |
|
*/ |
|
ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, |
|
mvmvif->id, mvmvif->color); |
|
if (ret) |
|
goto err; |
|
|
|
iwl_mvm_realloc_queues_after_restart(mvm, sta); |
|
sta_update = true; |
|
sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; |
|
goto update_fw; |
|
} |
|
|
|
mvm_sta->sta_id = sta_id; |
|
mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, |
|
mvmvif->color); |
|
mvm_sta->vif = vif; |
|
if (!mvm->trans->trans_cfg->gen2) |
|
mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; |
|
else |
|
mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; |
|
mvm_sta->tx_protection = 0; |
|
mvm_sta->tt_tx_protection = false; |
|
mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; |
|
|
|
/* HW restart, don't assume the memory has been zeroed */ |
|
mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ |
|
mvm_sta->tfd_queue_msk = 0; |
|
|
|
/* for HW restart - reset everything but the sequence number */ |
|
for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { |
|
u16 seq = mvm_sta->tid_data[i].seq_number; |
|
memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); |
|
mvm_sta->tid_data[i].seq_number = seq; |
|
|
|
/* |
|
* Mark all queues for this STA as unallocated and defer TX |
|
* frames until the queue is allocated |
|
*/ |
|
mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { |
|
struct iwl_mvm_txq *mvmtxq = |
|
iwl_mvm_txq_from_mac80211(sta->txq[i]); |
|
|
|
mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; |
|
INIT_LIST_HEAD(&mvmtxq->list); |
|
atomic_set(&mvmtxq->tx_request, 0); |
|
} |
|
|
|
mvm_sta->agg_tids = 0; |
|
|
|
if (iwl_mvm_has_new_rx_api(mvm) && |
|
!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { |
|
int q; |
|
|
|
dup_data = kcalloc(mvm->trans->num_rx_queues, |
|
sizeof(*dup_data), GFP_KERNEL); |
|
if (!dup_data) |
|
return -ENOMEM; |
|
/* |
|
* Initialize all the last_seq values to 0xffff which can never |
|
* compare equal to the frame's seq_ctrl in the check in |
|
* iwl_mvm_is_dup() since the lower 4 bits are the fragment |
|
* number and fragmented packets don't reach that function. |
|
* |
|
* This thus allows receiving a packet with seqno 0 and the |
|
* retry bit set as the very first packet on a new TID. |
|
*/ |
|
for (q = 0; q < mvm->trans->num_rx_queues; q++) |
|
memset(dup_data[q].last_seq, 0xff, |
|
sizeof(dup_data[q].last_seq)); |
|
mvm_sta->dup_data = dup_data; |
|
} |
|
|
|
if (!iwl_mvm_has_new_tx_api(mvm)) { |
|
ret = iwl_mvm_reserve_sta_stream(mvm, sta, |
|
ieee80211_vif_type_p2p(vif)); |
|
if (ret) |
|
goto err; |
|
} |
|
|
|
/* |
|
* if rs is registered with mac80211, then "add station" will be handled |
|
* via the corresponding ops, otherwise need to notify rate scaling here |
|
*/ |
|
if (iwl_mvm_has_tlc_offload(mvm)) |
|
iwl_mvm_rs_add_sta(mvm, mvm_sta); |
|
else |
|
spin_lock_init(&mvm_sta->lq_sta.rs_drv.pers.lock); |
|
|
|
iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); |
|
|
|
update_fw: |
|
ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); |
|
if (ret) |
|
goto err; |
|
|
|
if (vif->type == NL80211_IFTYPE_STATION) { |
|
if (!sta->tdls) { |
|
WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); |
|
mvmvif->ap_sta_id = sta_id; |
|
} else { |
|
WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); |
|
} |
|
} |
|
|
|
rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); |
|
|
|
return 0; |
|
|
|
err: |
|
return ret; |
|
} |
|
|
|
int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
|
bool drain) |
|
{ |
|
struct iwl_mvm_add_sta_cmd cmd = {}; |
|
int ret; |
|
u32 status; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); |
|
cmd.sta_id = mvmsta->sta_id; |
|
cmd.add_modify = STA_MODE_MODIFY; |
|
cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; |
|
cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); |
|
|
|
status = ADD_STA_SUCCESS; |
|
ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
|
iwl_mvm_add_sta_cmd_size(mvm), |
|
&cmd, &status); |
|
if (ret) |
|
return ret; |
|
|
|
switch (status & IWL_ADD_STA_STATUS_MASK) { |
|
case ADD_STA_SUCCESS: |
|
IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", |
|
mvmsta->sta_id); |
|
break; |
|
default: |
|
ret = -EIO; |
|
IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", |
|
mvmsta->sta_id); |
|
break; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
/* |
|
* Remove a station from the FW table. Before sending the command to remove |
|
* the station validate that the station is indeed known to the driver (sanity |
|
* only). |
|
*/ |
|
static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) |
|
{ |
|
struct ieee80211_sta *sta; |
|
struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { |
|
.sta_id = sta_id, |
|
}; |
|
int ret; |
|
|
|
sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
|
lockdep_is_held(&mvm->mutex)); |
|
|
|
/* Note: internal stations are marked as error values */ |
|
if (!sta) { |
|
IWL_ERR(mvm, "Invalid station id\n"); |
|
return -EINVAL; |
|
} |
|
|
|
ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
|
sizeof(rm_sta_cmd), &rm_sta_cmd); |
|
if (ret) { |
|
IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
|
int i; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { |
|
if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) |
|
continue; |
|
|
|
iwl_mvm_disable_txq(mvm, sta, mvm_sta->tid_data[i].txq_id, i, |
|
0); |
|
mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { |
|
struct iwl_mvm_txq *mvmtxq = |
|
iwl_mvm_txq_from_mac80211(sta->txq[i]); |
|
|
|
mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; |
|
} |
|
} |
|
|
|
int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, |
|
struct iwl_mvm_sta *mvm_sta) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { |
|
u16 txq_id; |
|
int ret; |
|
|
|
spin_lock_bh(&mvm_sta->lock); |
|
txq_id = mvm_sta->tid_data[i].txq_id; |
|
spin_unlock_bh(&mvm_sta->lock); |
|
|
|
if (txq_id == IWL_MVM_INVALID_QUEUE) |
|
continue; |
|
|
|
ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int iwl_mvm_rm_sta(struct iwl_mvm *mvm, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
|
u8 sta_id = mvm_sta->sta_id; |
|
int ret; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (iwl_mvm_has_new_rx_api(mvm)) |
|
kfree(mvm_sta->dup_data); |
|
|
|
ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
|
if (ret) |
|
return ret; |
|
|
|
/* flush its queues here since we are freeing mvm_sta */ |
|
ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); |
|
if (ret) |
|
return ret; |
|
if (iwl_mvm_has_new_tx_api(mvm)) { |
|
ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); |
|
} else { |
|
u32 q_mask = mvm_sta->tfd_queue_msk; |
|
|
|
ret = iwl_trans_wait_tx_queues_empty(mvm->trans, |
|
q_mask); |
|
} |
|
if (ret) |
|
return ret; |
|
|
|
ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); |
|
|
|
iwl_mvm_disable_sta_queues(mvm, vif, sta); |
|
|
|
/* If there is a TXQ still marked as reserved - free it */ |
|
if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { |
|
u8 reserved_txq = mvm_sta->reserved_queue; |
|
enum iwl_mvm_queue_status *status; |
|
|
|
/* |
|
* If no traffic has gone through the reserved TXQ - it |
|
* is still marked as IWL_MVM_QUEUE_RESERVED, and |
|
* should be manually marked as free again |
|
*/ |
|
status = &mvm->queue_info[reserved_txq].status; |
|
if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && |
|
(*status != IWL_MVM_QUEUE_FREE), |
|
"sta_id %d reserved txq %d status %d", |
|
sta_id, reserved_txq, *status)) |
|
return -EINVAL; |
|
|
|
*status = IWL_MVM_QUEUE_FREE; |
|
} |
|
|
|
if (vif->type == NL80211_IFTYPE_STATION && |
|
mvmvif->ap_sta_id == sta_id) { |
|
/* if associated - we can't remove the AP STA now */ |
|
if (vif->bss_conf.assoc) |
|
return ret; |
|
|
|
/* unassoc - go ahead - remove the AP STA now */ |
|
mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; |
|
} |
|
|
|
/* |
|
* This shouldn't happen - the TDLS channel switch should be canceled |
|
* before the STA is removed. |
|
*/ |
|
if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { |
|
mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; |
|
cancel_delayed_work(&mvm->tdls_cs.dwork); |
|
} |
|
|
|
/* |
|
* Make sure that the tx response code sees the station as -EBUSY and |
|
* calls the drain worker. |
|
*/ |
|
spin_lock_bh(&mvm_sta->lock); |
|
spin_unlock_bh(&mvm_sta->lock); |
|
|
|
ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
|
RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
|
|
|
return ret; |
|
} |
|
|
|
int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, |
|
struct ieee80211_vif *vif, |
|
u8 sta_id) |
|
{ |
|
int ret = iwl_mvm_rm_sta_common(mvm, sta_id); |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
|
return ret; |
|
} |
|
|
|
int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
|
struct iwl_mvm_int_sta *sta, |
|
u32 qmask, enum nl80211_iftype iftype, |
|
enum iwl_sta_type type) |
|
{ |
|
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || |
|
sta->sta_id == IWL_MVM_INVALID_STA) { |
|
sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
|
if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) |
|
return -ENOSPC; |
|
} |
|
|
|
sta->tfd_queue_msk = qmask; |
|
sta->type = type; |
|
|
|
/* put a non-NULL value so iterating over the stations won't stop */ |
|
rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); |
|
return 0; |
|
} |
|
|
|
void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) |
|
{ |
|
RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
|
memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
|
sta->sta_id = IWL_MVM_INVALID_STA; |
|
} |
|
|
|
static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, |
|
u8 sta_id, u8 fifo) |
|
{ |
|
unsigned int wdg_timeout = |
|
mvm->trans->trans_cfg->base_params->wd_timeout; |
|
struct iwl_trans_txq_scd_cfg cfg = { |
|
.fifo = fifo, |
|
.sta_id = sta_id, |
|
.tid = IWL_MAX_TID_COUNT, |
|
.aggregate = false, |
|
.frame_limit = IWL_FRAME_LIMIT, |
|
}; |
|
|
|
WARN_ON(iwl_mvm_has_new_tx_api(mvm)); |
|
|
|
iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); |
|
} |
|
|
|
static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) |
|
{ |
|
unsigned int wdg_timeout = |
|
mvm->trans->trans_cfg->base_params->wd_timeout; |
|
|
|
WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); |
|
|
|
return iwl_mvm_tvqm_enable_txq(mvm, sta_id, IWL_MAX_TID_COUNT, |
|
wdg_timeout); |
|
} |
|
|
|
static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, |
|
int maccolor, u8 *addr, |
|
struct iwl_mvm_int_sta *sta, |
|
u16 *queue, int fifo) |
|
{ |
|
int ret; |
|
|
|
/* Map queue to fifo - needs to happen before adding station */ |
|
if (!iwl_mvm_has_new_tx_api(mvm)) |
|
iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); |
|
|
|
ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); |
|
if (ret) { |
|
if (!iwl_mvm_has_new_tx_api(mvm)) |
|
iwl_mvm_disable_txq(mvm, NULL, *queue, |
|
IWL_MAX_TID_COUNT, 0); |
|
return ret; |
|
} |
|
|
|
/* |
|
* For 22000 firmware and on we cannot add queue to a station unknown |
|
* to firmware so enable queue here - after the station was added |
|
*/ |
|
if (iwl_mvm_has_new_tx_api(mvm)) { |
|
int txq; |
|
|
|
txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); |
|
if (txq < 0) { |
|
iwl_mvm_rm_sta_common(mvm, sta->sta_id); |
|
return txq; |
|
} |
|
|
|
*queue = txq; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) |
|
{ |
|
int ret; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
/* Allocate aux station and assign to it the aux queue */ |
|
ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), |
|
NL80211_IFTYPE_UNSPECIFIED, |
|
IWL_STA_AUX_ACTIVITY); |
|
if (ret) |
|
return ret; |
|
|
|
/* |
|
* In CDB NICs we need to specify which lmac to use for aux activity |
|
* using the mac_id argument place to send lmac_id to the function |
|
*/ |
|
ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, |
|
&mvm->aux_sta, &mvm->aux_queue, |
|
IWL_MVM_TX_FIFO_MCAST); |
|
if (ret) { |
|
iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, |
|
NULL, &mvm->snif_sta, |
|
&mvm->snif_queue, |
|
IWL_MVM_TX_FIFO_BE); |
|
} |
|
|
|
int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
|
{ |
|
int ret; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) |
|
return -EINVAL; |
|
|
|
iwl_mvm_disable_txq(mvm, NULL, mvm->snif_queue, IWL_MAX_TID_COUNT, 0); |
|
ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); |
|
if (ret) |
|
IWL_WARN(mvm, "Failed sending remove station\n"); |
|
|
|
return ret; |
|
} |
|
|
|
int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) |
|
{ |
|
int ret; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) |
|
return -EINVAL; |
|
|
|
iwl_mvm_disable_txq(mvm, NULL, mvm->aux_queue, IWL_MAX_TID_COUNT, 0); |
|
ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); |
|
if (ret) |
|
IWL_WARN(mvm, "Failed sending remove station\n"); |
|
iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); |
|
|
|
return ret; |
|
} |
|
|
|
void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) |
|
{ |
|
iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); |
|
} |
|
|
|
/* |
|
* Send the add station command for the vif's broadcast station. |
|
* Assumes that the station was already allocated. |
|
* |
|
* @mvm: the mvm component |
|
* @vif: the interface to which the broadcast station is added |
|
* @bsta: the broadcast station to add. |
|
*/ |
|
int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
|
static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
|
const u8 *baddr = _baddr; |
|
int queue; |
|
int ret; |
|
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_VO, |
|
.sta_id = mvmvif->bcast_sta.sta_id, |
|
.tid = IWL_MAX_TID_COUNT, |
|
.aggregate = false, |
|
.frame_limit = IWL_FRAME_LIMIT, |
|
}; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (!iwl_mvm_has_new_tx_api(mvm)) { |
|
if (vif->type == NL80211_IFTYPE_AP || |
|
vif->type == NL80211_IFTYPE_ADHOC) { |
|
queue = mvm->probe_queue; |
|
} else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { |
|
queue = mvm->p2p_dev_queue; |
|
} else { |
|
WARN(1, "Missing required TXQ for adding bcast STA\n"); |
|
return -EINVAL; |
|
} |
|
|
|
bsta->tfd_queue_msk |= BIT(queue); |
|
|
|
iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); |
|
} |
|
|
|
if (vif->type == NL80211_IFTYPE_ADHOC) |
|
baddr = vif->bss_conf.bssid; |
|
|
|
if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) |
|
return -ENOSPC; |
|
|
|
ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, |
|
mvmvif->id, mvmvif->color); |
|
if (ret) |
|
return ret; |
|
|
|
/* |
|
* For 22000 firmware and on we cannot add queue to a station unknown |
|
* to firmware so enable queue here - after the station was added |
|
*/ |
|
if (iwl_mvm_has_new_tx_api(mvm)) { |
|
queue = iwl_mvm_tvqm_enable_txq(mvm, bsta->sta_id, |
|
IWL_MAX_TID_COUNT, |
|
wdg_timeout); |
|
if (queue < 0) { |
|
iwl_mvm_rm_sta_common(mvm, bsta->sta_id); |
|
return queue; |
|
} |
|
|
|
if (vif->type == NL80211_IFTYPE_AP || |
|
vif->type == NL80211_IFTYPE_ADHOC) |
|
mvm->probe_queue = queue; |
|
else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) |
|
mvm->p2p_dev_queue = queue; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, |
|
struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
int queue; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true); |
|
|
|
switch (vif->type) { |
|
case NL80211_IFTYPE_AP: |
|
case NL80211_IFTYPE_ADHOC: |
|
queue = mvm->probe_queue; |
|
break; |
|
case NL80211_IFTYPE_P2P_DEVICE: |
|
queue = mvm->p2p_dev_queue; |
|
break; |
|
default: |
|
WARN(1, "Can't free bcast queue on vif type %d\n", |
|
vif->type); |
|
return; |
|
} |
|
|
|
iwl_mvm_disable_txq(mvm, NULL, queue, IWL_MAX_TID_COUNT, 0); |
|
if (iwl_mvm_has_new_tx_api(mvm)) |
|
return; |
|
|
|
WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); |
|
mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); |
|
} |
|
|
|
/* Send the FW a request to remove the station from it's internal data |
|
* structures, but DO NOT remove the entry from the local data structures. */ |
|
int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
int ret; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
iwl_mvm_free_bcast_sta_queues(mvm, vif); |
|
|
|
ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
|
if (ret) |
|
IWL_WARN(mvm, "Failed sending remove station\n"); |
|
return ret; |
|
} |
|
|
|
int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, |
|
ieee80211_vif_type_p2p(vif), |
|
IWL_STA_GENERAL_PURPOSE); |
|
} |
|
|
|
/* Allocate a new station entry for the broadcast station to the given vif, |
|
* and send it to the FW. |
|
* Note that each P2P mac should have its own broadcast station. |
|
* |
|
* @mvm: the mvm component |
|
* @vif: the interface to which the broadcast station is added |
|
* @bsta: the broadcast station to add. */ |
|
int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
|
int ret; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
|
if (ret) |
|
return ret; |
|
|
|
ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
|
|
|
if (ret) |
|
iwl_mvm_dealloc_int_sta(mvm, bsta); |
|
|
|
return ret; |
|
} |
|
|
|
void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
|
|
iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); |
|
} |
|
|
|
/* |
|
* Send the FW a request to remove the station from it's internal data |
|
* structures, and in addition remove it from the local data structure. |
|
*/ |
|
int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
|
{ |
|
int ret; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
|
|
|
iwl_mvm_dealloc_bcast_sta(mvm, vif); |
|
|
|
return ret; |
|
} |
|
|
|
/* |
|
* Allocate a new station entry for the multicast station to the given vif, |
|
* and send it to the FW. |
|
* Note that each AP/GO mac should have its own multicast station. |
|
* |
|
* @mvm: the mvm component |
|
* @vif: the interface to which the multicast station is added |
|
*/ |
|
int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; |
|
static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; |
|
const u8 *maddr = _maddr; |
|
struct iwl_trans_txq_scd_cfg cfg = { |
|
.fifo = vif->type == NL80211_IFTYPE_AP ? |
|
IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, |
|
.sta_id = msta->sta_id, |
|
.tid = 0, |
|
.aggregate = false, |
|
.frame_limit = IWL_FRAME_LIMIT, |
|
}; |
|
unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); |
|
int ret; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (WARN_ON(vif->type != NL80211_IFTYPE_AP && |
|
vif->type != NL80211_IFTYPE_ADHOC)) |
|
return -ENOTSUPP; |
|
|
|
/* |
|
* In IBSS, ieee80211_check_queues() sets the cab_queue to be |
|
* invalid, so make sure we use the queue we want. |
|
* Note that this is done here as we want to avoid making DQA |
|
* changes in mac80211 layer. |
|
*/ |
|
if (vif->type == NL80211_IFTYPE_ADHOC) |
|
mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; |
|
|
|
/* |
|
* While in previous FWs we had to exclude cab queue from TFD queue |
|
* mask, now it is needed as any other queue. |
|
*/ |
|
if (!iwl_mvm_has_new_tx_api(mvm) && |
|
fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { |
|
iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, |
|
timeout); |
|
msta->tfd_queue_msk |= BIT(mvmvif->cab_queue); |
|
} |
|
ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, |
|
mvmvif->id, mvmvif->color); |
|
if (ret) |
|
goto err; |
|
|
|
/* |
|
* Enable cab queue after the ADD_STA command is sent. |
|
* This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG |
|
* command with unknown station id, and for FW that doesn't support |
|
* station API since the cab queue is not included in the |
|
* tfd_queue_mask. |
|
*/ |
|
if (iwl_mvm_has_new_tx_api(mvm)) { |
|
int queue = iwl_mvm_tvqm_enable_txq(mvm, msta->sta_id, |
|
0, |
|
timeout); |
|
if (queue < 0) { |
|
ret = queue; |
|
goto err; |
|
} |
|
mvmvif->cab_queue = queue; |
|
} else if (!fw_has_api(&mvm->fw->ucode_capa, |
|
IWL_UCODE_TLV_API_STA_TYPE)) |
|
iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, |
|
timeout); |
|
|
|
return 0; |
|
err: |
|
iwl_mvm_dealloc_int_sta(mvm, msta); |
|
return ret; |
|
} |
|
|
|
static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, |
|
struct ieee80211_key_conf *keyconf, |
|
bool mcast) |
|
{ |
|
union { |
|
struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; |
|
struct iwl_mvm_add_sta_key_cmd cmd; |
|
} u = {}; |
|
bool new_api = fw_has_api(&mvm->fw->ucode_capa, |
|
IWL_UCODE_TLV_API_TKIP_MIC_KEYS); |
|
__le16 key_flags; |
|
int ret, size; |
|
u32 status; |
|
|
|
/* This is a valid situation for GTK removal */ |
|
if (sta_id == IWL_MVM_INVALID_STA) |
|
return 0; |
|
|
|
key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & |
|
STA_KEY_FLG_KEYID_MSK); |
|
key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); |
|
key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); |
|
|
|
if (mcast) |
|
key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
|
|
|
/* |
|
* The fields assigned here are in the same location at the start |
|
* of the command, so we can do this union trick. |
|
*/ |
|
u.cmd.common.key_flags = key_flags; |
|
u.cmd.common.key_offset = keyconf->hw_key_idx; |
|
u.cmd.common.sta_id = sta_id; |
|
|
|
size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); |
|
|
|
status = ADD_STA_SUCCESS; |
|
ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, |
|
&status); |
|
|
|
switch (status) { |
|
case ADD_STA_SUCCESS: |
|
IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); |
|
break; |
|
default: |
|
ret = -EIO; |
|
IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); |
|
break; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
/* |
|
* Send the FW a request to remove the station from it's internal data |
|
* structures, and in addition remove it from the local data structure. |
|
*/ |
|
int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
int ret; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true); |
|
|
|
iwl_mvm_disable_txq(mvm, NULL, mvmvif->cab_queue, 0, 0); |
|
|
|
ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); |
|
if (ret) |
|
IWL_WARN(mvm, "Failed sending remove station\n"); |
|
|
|
return ret; |
|
} |
|
|
|
#define IWL_MAX_RX_BA_SESSIONS 16 |
|
|
|
static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) |
|
{ |
|
struct iwl_mvm_delba_data notif = { |
|
.baid = baid, |
|
}; |
|
|
|
iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, |
|
¬if, sizeof(notif)); |
|
}; |
|
|
|
static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, |
|
struct iwl_mvm_baid_data *data) |
|
{ |
|
int i; |
|
|
|
iwl_mvm_sync_rxq_del_ba(mvm, data->baid); |
|
|
|
for (i = 0; i < mvm->trans->num_rx_queues; i++) { |
|
int j; |
|
struct iwl_mvm_reorder_buffer *reorder_buf = |
|
&data->reorder_buf[i]; |
|
struct iwl_mvm_reorder_buf_entry *entries = |
|
&data->entries[i * data->entries_per_queue]; |
|
|
|
spin_lock_bh(&reorder_buf->lock); |
|
if (likely(!reorder_buf->num_stored)) { |
|
spin_unlock_bh(&reorder_buf->lock); |
|
continue; |
|
} |
|
|
|
/* |
|
* This shouldn't happen in regular DELBA since the internal |
|
* delBA notification should trigger a release of all frames in |
|
* the reorder buffer. |
|
*/ |
|
WARN_ON(1); |
|
|
|
for (j = 0; j < reorder_buf->buf_size; j++) |
|
__skb_queue_purge(&entries[j].e.frames); |
|
/* |
|
* Prevent timer re-arm. This prevents a very far fetched case |
|
* where we timed out on the notification. There may be prior |
|
* RX frames pending in the RX queue before the notification |
|
* that might get processed between now and the actual deletion |
|
* and we would re-arm the timer although we are deleting the |
|
* reorder buffer. |
|
*/ |
|
reorder_buf->removed = true; |
|
spin_unlock_bh(&reorder_buf->lock); |
|
del_timer_sync(&reorder_buf->reorder_timer); |
|
} |
|
} |
|
|
|
static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, |
|
struct iwl_mvm_baid_data *data, |
|
u16 ssn, u16 buf_size) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < mvm->trans->num_rx_queues; i++) { |
|
struct iwl_mvm_reorder_buffer *reorder_buf = |
|
&data->reorder_buf[i]; |
|
struct iwl_mvm_reorder_buf_entry *entries = |
|
&data->entries[i * data->entries_per_queue]; |
|
int j; |
|
|
|
reorder_buf->num_stored = 0; |
|
reorder_buf->head_sn = ssn; |
|
reorder_buf->buf_size = buf_size; |
|
/* rx reorder timer */ |
|
timer_setup(&reorder_buf->reorder_timer, |
|
iwl_mvm_reorder_timer_expired, 0); |
|
spin_lock_init(&reorder_buf->lock); |
|
reorder_buf->mvm = mvm; |
|
reorder_buf->queue = i; |
|
reorder_buf->valid = false; |
|
for (j = 0; j < reorder_buf->buf_size; j++) |
|
__skb_queue_head_init(&entries[j].e.frames); |
|
} |
|
} |
|
|
|
int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
|
int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) |
|
{ |
|
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
|
struct iwl_mvm_add_sta_cmd cmd = {}; |
|
struct iwl_mvm_baid_data *baid_data = NULL; |
|
int ret; |
|
u32 status; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
|
IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); |
|
return -ENOSPC; |
|
} |
|
|
|
if (iwl_mvm_has_new_rx_api(mvm) && start) { |
|
u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); |
|
|
|
/* sparse doesn't like the __align() so don't check */ |
|
#ifndef __CHECKER__ |
|
/* |
|
* The division below will be OK if either the cache line size |
|
* can be divided by the entry size (ALIGN will round up) or if |
|
* if the entry size can be divided by the cache line size, in |
|
* which case the ALIGN() will do nothing. |
|
*/ |
|
BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && |
|
sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); |
|
#endif |
|
|
|
/* |
|
* Upward align the reorder buffer size to fill an entire cache |
|
* line for each queue, to avoid sharing cache lines between |
|
* different queues. |
|
*/ |
|
reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); |
|
|
|
/* |
|
* Allocate here so if allocation fails we can bail out early |
|
* before starting the BA session in the firmware |
|
*/ |
|
baid_data = kzalloc(sizeof(*baid_data) + |
|
mvm->trans->num_rx_queues * |
|
reorder_buf_size, |
|
GFP_KERNEL); |
|
if (!baid_data) |
|
return -ENOMEM; |
|
|
|
/* |
|
* This division is why we need the above BUILD_BUG_ON(), |
|
* if that doesn't hold then this will not be right. |
|
*/ |
|
baid_data->entries_per_queue = |
|
reorder_buf_size / sizeof(baid_data->entries[0]); |
|
} |
|
|
|
cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
|
cmd.sta_id = mvm_sta->sta_id; |
|
cmd.add_modify = STA_MODE_MODIFY; |
|
if (start) { |
|
cmd.add_immediate_ba_tid = (u8) tid; |
|
cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); |
|
cmd.rx_ba_window = cpu_to_le16(buf_size); |
|
} else { |
|
cmd.remove_immediate_ba_tid = (u8) tid; |
|
} |
|
cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
|
STA_MODIFY_REMOVE_BA_TID; |
|
|
|
status = ADD_STA_SUCCESS; |
|
ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
|
iwl_mvm_add_sta_cmd_size(mvm), |
|
&cmd, &status); |
|
if (ret) |
|
goto out_free; |
|
|
|
switch (status & IWL_ADD_STA_STATUS_MASK) { |
|
case ADD_STA_SUCCESS: |
|
IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", |
|
start ? "start" : "stopp"); |
|
break; |
|
case ADD_STA_IMMEDIATE_BA_FAILURE: |
|
IWL_WARN(mvm, "RX BA Session refused by fw\n"); |
|
ret = -ENOSPC; |
|
break; |
|
default: |
|
ret = -EIO; |
|
IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", |
|
start ? "start" : "stopp", status); |
|
break; |
|
} |
|
|
|
if (ret) |
|
goto out_free; |
|
|
|
if (start) { |
|
u8 baid; |
|
|
|
mvm->rx_ba_sessions++; |
|
|
|
if (!iwl_mvm_has_new_rx_api(mvm)) |
|
return 0; |
|
|
|
if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { |
|
ret = -EINVAL; |
|
goto out_free; |
|
} |
|
baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> |
|
IWL_ADD_STA_BAID_SHIFT); |
|
baid_data->baid = baid; |
|
baid_data->timeout = timeout; |
|
baid_data->last_rx = jiffies; |
|
baid_data->rcu_ptr = &mvm->baid_map[baid]; |
|
timer_setup(&baid_data->session_timer, |
|
iwl_mvm_rx_agg_session_expired, 0); |
|
baid_data->mvm = mvm; |
|
baid_data->tid = tid; |
|
baid_data->sta_id = mvm_sta->sta_id; |
|
|
|
mvm_sta->tid_to_baid[tid] = baid; |
|
if (timeout) |
|
mod_timer(&baid_data->session_timer, |
|
TU_TO_EXP_TIME(timeout * 2)); |
|
|
|
iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); |
|
/* |
|
* protect the BA data with RCU to cover a case where our |
|
* internal RX sync mechanism will timeout (not that it's |
|
* supposed to happen) and we will free the session data while |
|
* RX is being processed in parallel |
|
*/ |
|
IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", |
|
mvm_sta->sta_id, tid, baid); |
|
WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); |
|
rcu_assign_pointer(mvm->baid_map[baid], baid_data); |
|
} else { |
|
u8 baid = mvm_sta->tid_to_baid[tid]; |
|
|
|
if (mvm->rx_ba_sessions > 0) |
|
/* check that restart flow didn't zero the counter */ |
|
mvm->rx_ba_sessions--; |
|
if (!iwl_mvm_has_new_rx_api(mvm)) |
|
return 0; |
|
|
|
if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) |
|
return -EINVAL; |
|
|
|
baid_data = rcu_access_pointer(mvm->baid_map[baid]); |
|
if (WARN_ON(!baid_data)) |
|
return -EINVAL; |
|
|
|
/* synchronize all rx queues so we can safely delete */ |
|
iwl_mvm_free_reorder(mvm, baid_data); |
|
del_timer_sync(&baid_data->session_timer); |
|
RCU_INIT_POINTER(mvm->baid_map[baid], NULL); |
|
kfree_rcu(baid_data, rcu_head); |
|
IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); |
|
} |
|
return 0; |
|
|
|
out_free: |
|
kfree(baid_data); |
|
return ret; |
|
} |
|
|
|
int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
|
int tid, u8 queue, bool start) |
|
{ |
|
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
|
struct iwl_mvm_add_sta_cmd cmd = {}; |
|
int ret; |
|
u32 status; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (start) { |
|
mvm_sta->tfd_queue_msk |= BIT(queue); |
|
mvm_sta->tid_disable_agg &= ~BIT(tid); |
|
} else { |
|
/* In DQA-mode the queue isn't removed on agg termination */ |
|
mvm_sta->tid_disable_agg |= BIT(tid); |
|
} |
|
|
|
cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
|
cmd.sta_id = mvm_sta->sta_id; |
|
cmd.add_modify = STA_MODE_MODIFY; |
|
if (!iwl_mvm_has_new_tx_api(mvm)) |
|
cmd.modify_mask = STA_MODIFY_QUEUES; |
|
cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; |
|
cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); |
|
cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); |
|
|
|
status = ADD_STA_SUCCESS; |
|
ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
|
iwl_mvm_add_sta_cmd_size(mvm), |
|
&cmd, &status); |
|
if (ret) |
|
return ret; |
|
|
|
switch (status & IWL_ADD_STA_STATUS_MASK) { |
|
case ADD_STA_SUCCESS: |
|
break; |
|
default: |
|
ret = -EIO; |
|
IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", |
|
start ? "start" : "stopp", status); |
|
break; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
const u8 tid_to_mac80211_ac[] = { |
|
IEEE80211_AC_BE, |
|
IEEE80211_AC_BK, |
|
IEEE80211_AC_BK, |
|
IEEE80211_AC_BE, |
|
IEEE80211_AC_VI, |
|
IEEE80211_AC_VI, |
|
IEEE80211_AC_VO, |
|
IEEE80211_AC_VO, |
|
IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ |
|
}; |
|
|
|
static const u8 tid_to_ucode_ac[] = { |
|
AC_BE, |
|
AC_BK, |
|
AC_BK, |
|
AC_BE, |
|
AC_VI, |
|
AC_VI, |
|
AC_VO, |
|
AC_VO, |
|
}; |
|
|
|
int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta, u16 tid, u16 *ssn) |
|
{ |
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
struct iwl_mvm_tid_data *tid_data; |
|
u16 normalized_ssn; |
|
u16 txq_id; |
|
int ret; |
|
|
|
if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) |
|
return -EINVAL; |
|
|
|
if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && |
|
mvmsta->tid_data[tid].state != IWL_AGG_OFF) { |
|
IWL_ERR(mvm, |
|
"Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", |
|
mvmsta->tid_data[tid].state); |
|
return -ENXIO; |
|
} |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && |
|
iwl_mvm_has_new_tx_api(mvm)) { |
|
u8 ac = tid_to_mac80211_ac[tid]; |
|
|
|
ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
spin_lock_bh(&mvmsta->lock); |
|
|
|
/* |
|
* Note the possible cases: |
|
* 1. An enabled TXQ - TXQ needs to become agg'ed |
|
* 2. The TXQ hasn't yet been enabled, so find a free one and mark |
|
* it as reserved |
|
*/ |
|
txq_id = mvmsta->tid_data[tid].txq_id; |
|
if (txq_id == IWL_MVM_INVALID_QUEUE) { |
|
ret = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, |
|
IWL_MVM_DQA_MIN_DATA_QUEUE, |
|
IWL_MVM_DQA_MAX_DATA_QUEUE); |
|
if (ret < 0) { |
|
IWL_ERR(mvm, "Failed to allocate agg queue\n"); |
|
goto out; |
|
} |
|
|
|
txq_id = ret; |
|
|
|
/* TXQ hasn't yet been enabled, so mark it only as reserved */ |
|
mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; |
|
} else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { |
|
ret = -ENXIO; |
|
IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", |
|
tid, IWL_MAX_HW_QUEUES - 1); |
|
goto out; |
|
|
|
} else if (unlikely(mvm->queue_info[txq_id].status == |
|
IWL_MVM_QUEUE_SHARED)) { |
|
ret = -ENXIO; |
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"Can't start tid %d agg on shared queue!\n", |
|
tid); |
|
goto out; |
|
} |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"AGG for tid %d will be on queue #%d\n", |
|
tid, txq_id); |
|
|
|
tid_data = &mvmsta->tid_data[tid]; |
|
tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
|
tid_data->txq_id = txq_id; |
|
*ssn = tid_data->ssn; |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", |
|
mvmsta->sta_id, tid, txq_id, tid_data->ssn, |
|
tid_data->next_reclaimed); |
|
|
|
/* |
|
* In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need |
|
* to align the wrap around of ssn so we compare relevant values. |
|
*/ |
|
normalized_ssn = tid_data->ssn; |
|
if (mvm->trans->trans_cfg->gen2) |
|
normalized_ssn &= 0xff; |
|
|
|
if (normalized_ssn == tid_data->next_reclaimed) { |
|
tid_data->state = IWL_AGG_STARTING; |
|
ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; |
|
} else { |
|
tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; |
|
ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; |
|
} |
|
|
|
out: |
|
spin_unlock_bh(&mvmsta->lock); |
|
|
|
return ret; |
|
} |
|
|
|
int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta, u16 tid, u16 buf_size, |
|
bool amsdu) |
|
{ |
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
|
unsigned int wdg_timeout = |
|
iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); |
|
int queue, ret; |
|
bool alloc_queue = true; |
|
enum iwl_mvm_queue_status queue_status; |
|
u16 ssn; |
|
|
|
struct iwl_trans_txq_scd_cfg cfg = { |
|
.sta_id = mvmsta->sta_id, |
|
.tid = tid, |
|
.frame_limit = buf_size, |
|
.aggregate = true, |
|
}; |
|
|
|
/* |
|
* When FW supports TLC_OFFLOAD, it also implements Tx aggregation |
|
* manager, so this function should never be called in this case. |
|
*/ |
|
if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) |
|
return -EINVAL; |
|
|
|
BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
|
!= IWL_MAX_TID_COUNT); |
|
|
|
spin_lock_bh(&mvmsta->lock); |
|
ssn = tid_data->ssn; |
|
queue = tid_data->txq_id; |
|
tid_data->state = IWL_AGG_ON; |
|
mvmsta->agg_tids |= BIT(tid); |
|
tid_data->ssn = 0xffff; |
|
tid_data->amsdu_in_ampdu_allowed = amsdu; |
|
spin_unlock_bh(&mvmsta->lock); |
|
|
|
if (iwl_mvm_has_new_tx_api(mvm)) { |
|
/* |
|
* If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() |
|
* would have failed, so if we are here there is no need to |
|
* allocate a queue. |
|
* However, if aggregation size is different than the default |
|
* size, the scheduler should be reconfigured. |
|
* We cannot do this with the new TX API, so return unsupported |
|
* for now, until it will be offloaded to firmware.. |
|
* Note that if SCD default value changes - this condition |
|
* should be updated as well. |
|
*/ |
|
if (buf_size < IWL_FRAME_LIMIT) |
|
return -ENOTSUPP; |
|
|
|
ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); |
|
if (ret) |
|
return -EIO; |
|
goto out; |
|
} |
|
|
|
cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
|
|
|
queue_status = mvm->queue_info[queue].status; |
|
|
|
/* Maybe there is no need to even alloc a queue... */ |
|
if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) |
|
alloc_queue = false; |
|
|
|
/* |
|
* Only reconfig the SCD for the queue if the window size has |
|
* changed from current (become smaller) |
|
*/ |
|
if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { |
|
/* |
|
* If reconfiguring an existing queue, it first must be |
|
* drained |
|
*/ |
|
ret = iwl_trans_wait_tx_queues_empty(mvm->trans, |
|
BIT(queue)); |
|
if (ret) { |
|
IWL_ERR(mvm, |
|
"Error draining queue before reconfig\n"); |
|
return ret; |
|
} |
|
|
|
ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, |
|
mvmsta->sta_id, tid, |
|
buf_size, ssn); |
|
if (ret) { |
|
IWL_ERR(mvm, |
|
"Error reconfiguring TXQ #%d\n", queue); |
|
return ret; |
|
} |
|
} |
|
|
|
if (alloc_queue) |
|
iwl_mvm_enable_txq(mvm, sta, queue, ssn, |
|
&cfg, wdg_timeout); |
|
|
|
/* Send ADD_STA command to enable aggs only if the queue isn't shared */ |
|
if (queue_status != IWL_MVM_QUEUE_SHARED) { |
|
ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); |
|
if (ret) |
|
return -EIO; |
|
} |
|
|
|
/* No need to mark as reserved */ |
|
mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; |
|
|
|
out: |
|
/* |
|
* 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. |
|
*/ |
|
mvmsta->max_agg_bufsize = |
|
min(mvmsta->max_agg_bufsize, buf_size); |
|
mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; |
|
|
|
IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
|
sta->addr, tid); |
|
|
|
return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq); |
|
} |
|
|
|
static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, |
|
struct iwl_mvm_sta *mvmsta, |
|
struct iwl_mvm_tid_data *tid_data) |
|
{ |
|
u16 txq_id = tid_data->txq_id; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (iwl_mvm_has_new_tx_api(mvm)) |
|
return; |
|
|
|
/* |
|
* The TXQ is marked as reserved only if no traffic came through yet |
|
* This means no traffic has been sent on this TID (agg'd or not), so |
|
* we no longer have use for the queue. Since it hasn't even been |
|
* allocated through iwl_mvm_enable_txq, so we can just mark it back as |
|
* free. |
|
*/ |
|
if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { |
|
mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; |
|
tid_data->txq_id = IWL_MVM_INVALID_QUEUE; |
|
} |
|
} |
|
|
|
int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta, u16 tid) |
|
{ |
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
|
u16 txq_id; |
|
int err; |
|
|
|
/* |
|
* If mac80211 is cleaning its state, then say that we finished since |
|
* our state has been cleared anyway. |
|
*/ |
|
if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { |
|
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
|
return 0; |
|
} |
|
|
|
spin_lock_bh(&mvmsta->lock); |
|
|
|
txq_id = tid_data->txq_id; |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", |
|
mvmsta->sta_id, tid, txq_id, tid_data->state); |
|
|
|
mvmsta->agg_tids &= ~BIT(tid); |
|
|
|
iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); |
|
|
|
switch (tid_data->state) { |
|
case IWL_AGG_ON: |
|
tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, |
|
"ssn = %d, next_recl = %d\n", |
|
tid_data->ssn, tid_data->next_reclaimed); |
|
|
|
tid_data->ssn = 0xffff; |
|
tid_data->state = IWL_AGG_OFF; |
|
spin_unlock_bh(&mvmsta->lock); |
|
|
|
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
|
|
|
iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
|
return 0; |
|
case IWL_AGG_STARTING: |
|
case IWL_EMPTYING_HW_QUEUE_ADDBA: |
|
/* |
|
* The agg session has been stopped before it was set up. This |
|
* can happen when the AddBA timer times out for example. |
|
*/ |
|
|
|
/* No barriers since we are under mutex */ |
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
|
tid_data->state = IWL_AGG_OFF; |
|
err = 0; |
|
break; |
|
default: |
|
IWL_ERR(mvm, |
|
"Stopping AGG while state not ON or starting for %d on %d (%d)\n", |
|
mvmsta->sta_id, tid, tid_data->state); |
|
IWL_ERR(mvm, |
|
"\ttid_data->txq_id = %d\n", tid_data->txq_id); |
|
err = -EINVAL; |
|
} |
|
|
|
spin_unlock_bh(&mvmsta->lock); |
|
|
|
return err; |
|
} |
|
|
|
int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta, u16 tid) |
|
{ |
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
|
u16 txq_id; |
|
enum iwl_mvm_agg_state old_state; |
|
|
|
/* |
|
* First set the agg state to OFF to avoid calling |
|
* ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. |
|
*/ |
|
spin_lock_bh(&mvmsta->lock); |
|
txq_id = tid_data->txq_id; |
|
IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", |
|
mvmsta->sta_id, tid, txq_id, tid_data->state); |
|
old_state = tid_data->state; |
|
tid_data->state = IWL_AGG_OFF; |
|
mvmsta->agg_tids &= ~BIT(tid); |
|
spin_unlock_bh(&mvmsta->lock); |
|
|
|
iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); |
|
|
|
if (old_state >= IWL_AGG_ON) { |
|
iwl_mvm_drain_sta(mvm, mvmsta, true); |
|
|
|
if (iwl_mvm_has_new_tx_api(mvm)) { |
|
if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, |
|
BIT(tid))) |
|
IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); |
|
iwl_trans_wait_txq_empty(mvm->trans, txq_id); |
|
} else { |
|
if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) |
|
IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); |
|
iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); |
|
} |
|
|
|
iwl_mvm_drain_sta(mvm, mvmsta, false); |
|
|
|
iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
|
{ |
|
int i, max = -1, max_offs = -1; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
/* Pick the unused key offset with the highest 'deleted' |
|
* counter. Every time a key is deleted, all the counters |
|
* are incremented and the one that was just deleted is |
|
* reset to zero. Thus, the highest counter is the one |
|
* that was deleted longest ago. Pick that one. |
|
*/ |
|
for (i = 0; i < STA_KEY_MAX_NUM; i++) { |
|
if (test_bit(i, mvm->fw_key_table)) |
|
continue; |
|
if (mvm->fw_key_deleted[i] > max) { |
|
max = mvm->fw_key_deleted[i]; |
|
max_offs = i; |
|
} |
|
} |
|
|
|
if (max_offs < 0) |
|
return STA_KEY_IDX_INVALID; |
|
|
|
return max_offs; |
|
} |
|
|
|
static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
|
|
if (sta) |
|
return iwl_mvm_sta_from_mac80211(sta); |
|
|
|
/* |
|
* The device expects GTKs for station interfaces to be |
|
* installed as GTKs for the AP station. If we have no |
|
* station ID, then use AP's station ID. |
|
*/ |
|
if (vif->type == NL80211_IFTYPE_STATION && |
|
mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { |
|
u8 sta_id = mvmvif->ap_sta_id; |
|
|
|
sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], |
|
lockdep_is_held(&mvm->mutex)); |
|
|
|
/* |
|
* It is possible that the 'sta' parameter is NULL, |
|
* for example when a GTK is removed - the sta_id will then |
|
* be the AP ID, and no station was passed by mac80211. |
|
*/ |
|
if (IS_ERR_OR_NULL(sta)) |
|
return NULL; |
|
|
|
return iwl_mvm_sta_from_mac80211(sta); |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, |
|
u32 sta_id, |
|
struct ieee80211_key_conf *key, bool mcast, |
|
u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, |
|
u8 key_offset, bool mfp) |
|
{ |
|
union { |
|
struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; |
|
struct iwl_mvm_add_sta_key_cmd cmd; |
|
} u = {}; |
|
__le16 key_flags; |
|
int ret; |
|
u32 status; |
|
u16 keyidx; |
|
u64 pn = 0; |
|
int i, size; |
|
bool new_api = fw_has_api(&mvm->fw->ucode_capa, |
|
IWL_UCODE_TLV_API_TKIP_MIC_KEYS); |
|
|
|
if (sta_id == IWL_MVM_INVALID_STA) |
|
return -EINVAL; |
|
|
|
keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & |
|
STA_KEY_FLG_KEYID_MSK; |
|
key_flags = cpu_to_le16(keyidx); |
|
key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); |
|
|
|
switch (key->cipher) { |
|
case WLAN_CIPHER_SUITE_TKIP: |
|
key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); |
|
if (new_api) { |
|
memcpy((void *)&u.cmd.tx_mic_key, |
|
&key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], |
|
IWL_MIC_KEY_SIZE); |
|
|
|
memcpy((void *)&u.cmd.rx_mic_key, |
|
&key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], |
|
IWL_MIC_KEY_SIZE); |
|
pn = atomic64_read(&key->tx_pn); |
|
|
|
} else { |
|
u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; |
|
for (i = 0; i < 5; i++) |
|
u.cmd_v1.tkip_rx_ttak[i] = |
|
cpu_to_le16(tkip_p1k[i]); |
|
} |
|
memcpy(u.cmd.common.key, key->key, key->keylen); |
|
break; |
|
case WLAN_CIPHER_SUITE_CCMP: |
|
key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); |
|
memcpy(u.cmd.common.key, key->key, key->keylen); |
|
if (new_api) |
|
pn = atomic64_read(&key->tx_pn); |
|
break; |
|
case WLAN_CIPHER_SUITE_WEP104: |
|
key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); |
|
fallthrough; |
|
case WLAN_CIPHER_SUITE_WEP40: |
|
key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); |
|
memcpy(u.cmd.common.key + 3, key->key, key->keylen); |
|
break; |
|
case WLAN_CIPHER_SUITE_GCMP_256: |
|
key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); |
|
fallthrough; |
|
case WLAN_CIPHER_SUITE_GCMP: |
|
key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); |
|
memcpy(u.cmd.common.key, key->key, key->keylen); |
|
if (new_api) |
|
pn = atomic64_read(&key->tx_pn); |
|
break; |
|
default: |
|
key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
|
memcpy(u.cmd.common.key, key->key, key->keylen); |
|
} |
|
|
|
if (mcast) |
|
key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
|
if (mfp) |
|
key_flags |= cpu_to_le16(STA_KEY_MFP); |
|
|
|
u.cmd.common.key_offset = key_offset; |
|
u.cmd.common.key_flags = key_flags; |
|
u.cmd.common.sta_id = sta_id; |
|
|
|
if (new_api) { |
|
u.cmd.transmit_seq_cnt = cpu_to_le64(pn); |
|
size = sizeof(u.cmd); |
|
} else { |
|
size = sizeof(u.cmd_v1); |
|
} |
|
|
|
status = ADD_STA_SUCCESS; |
|
if (cmd_flags & CMD_ASYNC) |
|
ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, |
|
&u.cmd); |
|
else |
|
ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, |
|
&u.cmd, &status); |
|
|
|
switch (status) { |
|
case ADD_STA_SUCCESS: |
|
IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); |
|
break; |
|
default: |
|
ret = -EIO; |
|
IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); |
|
break; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, |
|
struct ieee80211_key_conf *keyconf, |
|
u8 sta_id, bool remove_key) |
|
{ |
|
struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; |
|
|
|
/* verify the key details match the required command's expectations */ |
|
if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || |
|
(keyconf->keyidx != 4 && keyconf->keyidx != 5 && |
|
keyconf->keyidx != 6 && keyconf->keyidx != 7) || |
|
(keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && |
|
keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && |
|
keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) |
|
return -EINVAL; |
|
|
|
if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && |
|
keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) |
|
return -EINVAL; |
|
|
|
igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); |
|
igtk_cmd.sta_id = cpu_to_le32(sta_id); |
|
|
|
if (remove_key) { |
|
/* This is a valid situation for IGTK */ |
|
if (sta_id == IWL_MVM_INVALID_STA) |
|
return 0; |
|
|
|
igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); |
|
} else { |
|
struct ieee80211_key_seq seq; |
|
const u8 *pn; |
|
|
|
switch (keyconf->cipher) { |
|
case WLAN_CIPHER_SUITE_AES_CMAC: |
|
igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); |
|
break; |
|
case WLAN_CIPHER_SUITE_BIP_GMAC_128: |
|
case WLAN_CIPHER_SUITE_BIP_GMAC_256: |
|
igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); |
|
break; |
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); |
|
if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) |
|
igtk_cmd.ctrl_flags |= |
|
cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); |
|
ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
|
pn = seq.aes_cmac.pn; |
|
igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | |
|
((u64) pn[4] << 8) | |
|
((u64) pn[3] << 16) | |
|
((u64) pn[2] << 24) | |
|
((u64) pn[1] << 32) | |
|
((u64) pn[0] << 40)); |
|
} |
|
|
|
IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", |
|
remove_key ? "removing" : "installing", |
|
keyconf->keyidx >= 6 ? "B" : "", |
|
keyconf->keyidx, igtk_cmd.sta_id); |
|
|
|
if (!iwl_mvm_has_new_rx_api(mvm)) { |
|
struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { |
|
.ctrl_flags = igtk_cmd.ctrl_flags, |
|
.key_id = igtk_cmd.key_id, |
|
.sta_id = igtk_cmd.sta_id, |
|
.receive_seq_cnt = igtk_cmd.receive_seq_cnt |
|
}; |
|
|
|
memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, |
|
ARRAY_SIZE(igtk_cmd_v1.igtk)); |
|
return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
|
sizeof(igtk_cmd_v1), &igtk_cmd_v1); |
|
} |
|
return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
|
sizeof(igtk_cmd), &igtk_cmd); |
|
} |
|
|
|
|
|
static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
|
|
if (sta) |
|
return sta->addr; |
|
|
|
if (vif->type == NL80211_IFTYPE_STATION && |
|
mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { |
|
u8 sta_id = mvmvif->ap_sta_id; |
|
sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
|
lockdep_is_held(&mvm->mutex)); |
|
return sta->addr; |
|
} |
|
|
|
|
|
return NULL; |
|
} |
|
|
|
static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta, |
|
struct ieee80211_key_conf *keyconf, |
|
u8 key_offset, |
|
bool mcast) |
|
{ |
|
int ret; |
|
const u8 *addr; |
|
struct ieee80211_key_seq seq; |
|
u16 p1k[5]; |
|
u32 sta_id; |
|
bool mfp = false; |
|
|
|
if (sta) { |
|
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
|
|
|
sta_id = mvm_sta->sta_id; |
|
mfp = sta->mfp; |
|
} else if (vif->type == NL80211_IFTYPE_AP && |
|
!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
|
|
sta_id = mvmvif->mcast_sta.sta_id; |
|
} else { |
|
IWL_ERR(mvm, "Failed to find station id\n"); |
|
return -EINVAL; |
|
} |
|
|
|
switch (keyconf->cipher) { |
|
case WLAN_CIPHER_SUITE_TKIP: |
|
addr = iwl_mvm_get_mac_addr(mvm, vif, sta); |
|
/* get phase 1 key from mac80211 */ |
|
ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
|
ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); |
|
ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, |
|
seq.tkip.iv32, p1k, 0, key_offset, |
|
mfp); |
|
break; |
|
case WLAN_CIPHER_SUITE_CCMP: |
|
case WLAN_CIPHER_SUITE_WEP40: |
|
case WLAN_CIPHER_SUITE_WEP104: |
|
case WLAN_CIPHER_SUITE_GCMP: |
|
case WLAN_CIPHER_SUITE_GCMP_256: |
|
ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, |
|
0, NULL, 0, key_offset, mfp); |
|
break; |
|
default: |
|
ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, |
|
0, NULL, 0, key_offset, mfp); |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta, |
|
struct ieee80211_key_conf *keyconf, |
|
u8 key_offset) |
|
{ |
|
bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
|
struct iwl_mvm_sta *mvm_sta; |
|
u8 sta_id = IWL_MVM_INVALID_STA; |
|
int ret; |
|
static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
if (vif->type != NL80211_IFTYPE_AP || |
|
keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { |
|
/* Get the station id from the mvm local station table */ |
|
mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
|
if (!mvm_sta) { |
|
IWL_ERR(mvm, "Failed to find station\n"); |
|
return -EINVAL; |
|
} |
|
sta_id = mvm_sta->sta_id; |
|
|
|
/* |
|
* It is possible that the 'sta' parameter is NULL, and thus |
|
* there is a need to retrieve the sta from the local station |
|
* table. |
|
*/ |
|
if (!sta) { |
|
sta = rcu_dereference_protected( |
|
mvm->fw_id_to_mac_id[sta_id], |
|
lockdep_is_held(&mvm->mutex)); |
|
if (IS_ERR_OR_NULL(sta)) { |
|
IWL_ERR(mvm, "Invalid station id\n"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
|
return -EINVAL; |
|
} else { |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
|
|
sta_id = mvmvif->mcast_sta.sta_id; |
|
} |
|
|
|
if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || |
|
keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || |
|
keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { |
|
ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); |
|
goto end; |
|
} |
|
|
|
/* If the key_offset is not pre-assigned, we need to find a |
|
* new offset to use. In normal cases, the offset is not |
|
* pre-assigned, but during HW_RESTART we want to reuse the |
|
* same indices, so we pass them when this function is called. |
|
* |
|
* In D3 entry, we need to hardcoded the indices (because the |
|
* firmware hardcodes the PTK offset to 0). In this case, we |
|
* need to make sure we don't overwrite the hw_key_idx in the |
|
* keyconf structure, because otherwise we cannot configure |
|
* the original ones back when resuming. |
|
*/ |
|
if (key_offset == STA_KEY_IDX_INVALID) { |
|
key_offset = iwl_mvm_set_fw_key_idx(mvm); |
|
if (key_offset == STA_KEY_IDX_INVALID) |
|
return -ENOSPC; |
|
keyconf->hw_key_idx = key_offset; |
|
} |
|
|
|
ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); |
|
if (ret) |
|
goto end; |
|
|
|
/* |
|
* For WEP, the same key is used for multicast and unicast. Upload it |
|
* again, using the same key offset, and now pointing the other one |
|
* to the same key slot (offset). |
|
* If this fails, remove the original as well. |
|
*/ |
|
if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || |
|
keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && |
|
sta) { |
|
ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, |
|
key_offset, !mcast); |
|
if (ret) { |
|
__iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
|
goto end; |
|
} |
|
} |
|
|
|
__set_bit(key_offset, mvm->fw_key_table); |
|
|
|
end: |
|
IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", |
|
keyconf->cipher, keyconf->keylen, keyconf->keyidx, |
|
sta ? sta->addr : zero_addr, ret); |
|
return ret; |
|
} |
|
|
|
int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta, |
|
struct ieee80211_key_conf *keyconf) |
|
{ |
|
bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
|
struct iwl_mvm_sta *mvm_sta; |
|
u8 sta_id = IWL_MVM_INVALID_STA; |
|
int ret, i; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
/* Get the station from the mvm local station table */ |
|
mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
|
if (mvm_sta) |
|
sta_id = mvm_sta->sta_id; |
|
else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) |
|
sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; |
|
|
|
|
|
IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", |
|
keyconf->keyidx, sta_id); |
|
|
|
if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || |
|
keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || |
|
keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) |
|
return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); |
|
|
|
if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
|
IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
|
keyconf->hw_key_idx); |
|
return -ENOENT; |
|
} |
|
|
|
/* track which key was deleted last */ |
|
for (i = 0; i < STA_KEY_MAX_NUM; i++) { |
|
if (mvm->fw_key_deleted[i] < U8_MAX) |
|
mvm->fw_key_deleted[i]++; |
|
} |
|
mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; |
|
|
|
if (sta && !mvm_sta) { |
|
IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
|
return 0; |
|
} |
|
|
|
ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
|
if (ret) |
|
return ret; |
|
|
|
/* delete WEP key twice to get rid of (now useless) offset */ |
|
if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || |
|
keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) |
|
ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); |
|
|
|
return ret; |
|
} |
|
|
|
void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_key_conf *keyconf, |
|
struct ieee80211_sta *sta, u32 iv32, |
|
u16 *phase1key) |
|
{ |
|
struct iwl_mvm_sta *mvm_sta; |
|
bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
|
bool mfp = sta ? sta->mfp : false; |
|
|
|
rcu_read_lock(); |
|
|
|
mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
|
if (WARN_ON_ONCE(!mvm_sta)) |
|
goto unlock; |
|
iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, |
|
iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, |
|
mfp); |
|
|
|
unlock: |
|
rcu_read_unlock(); |
|
} |
|
|
|
void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
struct iwl_mvm_add_sta_cmd cmd = { |
|
.add_modify = STA_MODE_MODIFY, |
|
.sta_id = mvmsta->sta_id, |
|
.station_flags_msk = cpu_to_le32(STA_FLG_PS), |
|
.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
|
}; |
|
int ret; |
|
|
|
ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
|
iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
|
if (ret) |
|
IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); |
|
} |
|
|
|
void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
|
struct ieee80211_sta *sta, |
|
enum ieee80211_frame_release_type reason, |
|
u16 cnt, u16 tids, bool more_data, |
|
bool single_sta_queue) |
|
{ |
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
|
struct iwl_mvm_add_sta_cmd cmd = { |
|
.add_modify = STA_MODE_MODIFY, |
|
.sta_id = mvmsta->sta_id, |
|
.modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
|
.sleep_tx_count = cpu_to_le16(cnt), |
|
.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
|
}; |
|
int tid, ret; |
|
unsigned long _tids = tids; |
|
|
|
/* convert TIDs to ACs - we don't support TSPEC so that's OK |
|
* Note that this field is reserved and unused by firmware not |
|
* supporting GO uAPSD, so it's safe to always do this. |
|
*/ |
|
for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) |
|
cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); |
|
|
|
/* If we're releasing frames from aggregation or dqa queues then check |
|
* if all the queues that we're releasing frames from, combined, have: |
|
* - more frames than the service period, in which case more_data |
|
* needs to be set |
|
* - fewer than 'cnt' frames, in which case we need to adjust the |
|
* firmware command (but do that unconditionally) |
|
*/ |
|
if (single_sta_queue) { |
|
int remaining = cnt; |
|
int sleep_tx_count; |
|
|
|
spin_lock_bh(&mvmsta->lock); |
|
for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { |
|
struct iwl_mvm_tid_data *tid_data; |
|
u16 n_queued; |
|
|
|
tid_data = &mvmsta->tid_data[tid]; |
|
|
|
n_queued = iwl_mvm_tid_queued(mvm, tid_data); |
|
if (n_queued > remaining) { |
|
more_data = true; |
|
remaining = 0; |
|
break; |
|
} |
|
remaining -= n_queued; |
|
} |
|
sleep_tx_count = cnt - remaining; |
|
if (reason == IEEE80211_FRAME_RELEASE_UAPSD) |
|
mvmsta->sleep_tx_count = sleep_tx_count; |
|
spin_unlock_bh(&mvmsta->lock); |
|
|
|
cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); |
|
if (WARN_ON(cnt - remaining == 0)) { |
|
ieee80211_sta_eosp(sta); |
|
return; |
|
} |
|
} |
|
|
|
/* Note: this is ignored by firmware not supporting GO uAPSD */ |
|
if (more_data) |
|
cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; |
|
|
|
if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { |
|
mvmsta->next_status_eosp = true; |
|
cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; |
|
} else { |
|
cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; |
|
} |
|
|
|
/* block the Tx queues until the FW updated the sleep Tx count */ |
|
iwl_trans_block_txq_ptrs(mvm->trans, true); |
|
|
|
ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, |
|
CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, |
|
iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
|
if (ret) |
|
IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); |
|
} |
|
|
|
void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, |
|
struct iwl_rx_cmd_buffer *rxb) |
|
{ |
|
struct iwl_rx_packet *pkt = rxb_addr(rxb); |
|
struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; |
|
struct ieee80211_sta *sta; |
|
u32 sta_id = le32_to_cpu(notif->sta_id); |
|
|
|
if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) |
|
return; |
|
|
|
rcu_read_lock(); |
|
sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); |
|
if (!IS_ERR_OR_NULL(sta)) |
|
ieee80211_sta_eosp(sta); |
|
rcu_read_unlock(); |
|
} |
|
|
|
void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, |
|
struct iwl_mvm_sta *mvmsta, bool disable) |
|
{ |
|
struct iwl_mvm_add_sta_cmd cmd = { |
|
.add_modify = STA_MODE_MODIFY, |
|
.sta_id = mvmsta->sta_id, |
|
.station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, |
|
.station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), |
|
.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
|
}; |
|
int ret; |
|
|
|
ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
|
iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
|
if (ret) |
|
IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); |
|
} |
|
|
|
void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, |
|
struct ieee80211_sta *sta, |
|
bool disable) |
|
{ |
|
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
|
|
|
spin_lock_bh(&mvm_sta->lock); |
|
|
|
if (mvm_sta->disable_tx == disable) { |
|
spin_unlock_bh(&mvm_sta->lock); |
|
return; |
|
} |
|
|
|
mvm_sta->disable_tx = disable; |
|
|
|
/* Tell mac80211 to start/stop queuing tx for this station */ |
|
ieee80211_sta_block_awake(mvm->hw, sta, disable); |
|
|
|
iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); |
|
|
|
spin_unlock_bh(&mvm_sta->lock); |
|
} |
|
|
|
static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, |
|
struct iwl_mvm_vif *mvmvif, |
|
struct iwl_mvm_int_sta *sta, |
|
bool disable) |
|
{ |
|
u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); |
|
struct iwl_mvm_add_sta_cmd cmd = { |
|
.add_modify = STA_MODE_MODIFY, |
|
.sta_id = sta->sta_id, |
|
.station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, |
|
.station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), |
|
.mac_id_n_color = cpu_to_le32(id), |
|
}; |
|
int ret; |
|
|
|
ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
|
iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
|
if (ret) |
|
IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); |
|
} |
|
|
|
void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, |
|
struct iwl_mvm_vif *mvmvif, |
|
bool disable) |
|
{ |
|
struct ieee80211_sta *sta; |
|
struct iwl_mvm_sta *mvm_sta; |
|
int i; |
|
|
|
rcu_read_lock(); |
|
|
|
/* Block/unblock all the stations of the given mvmvif */ |
|
for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { |
|
sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); |
|
if (IS_ERR_OR_NULL(sta)) |
|
continue; |
|
|
|
mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
|
if (mvm_sta->mac_id_n_color != |
|
FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) |
|
continue; |
|
|
|
iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); |
|
} |
|
|
|
rcu_read_unlock(); |
|
|
|
if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) |
|
return; |
|
|
|
/* Need to block/unblock also multicast station */ |
|
if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) |
|
iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, |
|
&mvmvif->mcast_sta, disable); |
|
|
|
/* |
|
* Only unblock the broadcast station (FW blocks it for immediate |
|
* quiet, not the driver) |
|
*/ |
|
if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) |
|
iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, |
|
&mvmvif->bcast_sta, disable); |
|
} |
|
|
|
void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
struct iwl_mvm_sta *mvmsta; |
|
|
|
rcu_read_lock(); |
|
|
|
mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); |
|
|
|
if (!WARN_ON(!mvmsta)) |
|
iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); |
|
|
|
rcu_read_unlock(); |
|
} |
|
|
|
u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) |
|
{ |
|
u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
|
|
|
/* |
|
* In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need |
|
* to align the wrap around of ssn so we compare relevant values. |
|
*/ |
|
if (mvm->trans->trans_cfg->gen2) |
|
sn &= 0xff; |
|
|
|
return ieee80211_sn_sub(sn, tid_data->next_reclaimed); |
|
} |
|
|
|
int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
|
struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, |
|
u8 *key, u32 key_len) |
|
{ |
|
int ret; |
|
u16 queue; |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
struct ieee80211_key_conf *keyconf; |
|
|
|
ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, |
|
NL80211_IFTYPE_UNSPECIFIED, |
|
IWL_STA_LINK); |
|
if (ret) |
|
return ret; |
|
|
|
ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, |
|
addr, sta, &queue, |
|
IWL_MVM_TX_FIFO_BE); |
|
if (ret) |
|
goto out; |
|
|
|
keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); |
|
if (!keyconf) { |
|
ret = -ENOBUFS; |
|
goto out; |
|
} |
|
|
|
keyconf->cipher = cipher; |
|
memcpy(keyconf->key, key, key_len); |
|
keyconf->keylen = key_len; |
|
|
|
ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, |
|
0, NULL, 0, 0, true); |
|
kfree(keyconf); |
|
return 0; |
|
out: |
|
iwl_mvm_dealloc_int_sta(mvm, sta); |
|
return ret; |
|
}
|
|
|