// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* * Copyright (C) 2017 Intel Deutschland GmbH * Copyright (C) 2018-2024 Intel Corporation */ #include "rs.h" #include "fw-api.h" #include "sta.h" #include "iwl-op-mode.h" #include "mvm.h" static u8 rs_fw_bw_from_sta_bw(const struct ieee80211_link_sta *link_sta) { switch (link_sta->bandwidth) { case IEEE80211_STA_RX_BW_320: return IWL_TLC_MNG_CH_WIDTH_320MHZ; case IEEE80211_STA_RX_BW_160: return IWL_TLC_MNG_CH_WIDTH_160MHZ; case IEEE80211_STA_RX_BW_80: return IWL_TLC_MNG_CH_WIDTH_80MHZ; case IEEE80211_STA_RX_BW_40: return IWL_TLC_MNG_CH_WIDTH_40MHZ; case IEEE80211_STA_RX_BW_20: default: return IWL_TLC_MNG_CH_WIDTH_20MHZ; } } static u8 rs_fw_set_active_chains(u8 chains) { u8 fw_chains = 0; if (chains & ANT_A) fw_chains |= IWL_TLC_MNG_CHAIN_A_MSK; if (chains & ANT_B) fw_chains |= IWL_TLC_MNG_CHAIN_B_MSK; return fw_chains; } static u8 rs_fw_sgi_cw_support(struct ieee80211_link_sta *link_sta) { struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap; struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap; struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap; u8 supp = 0; if (he_cap->has_he) return 0; if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20) supp |= BIT(IWL_TLC_MNG_CH_WIDTH_20MHZ); if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40) supp |= BIT(IWL_TLC_MNG_CH_WIDTH_40MHZ); if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_80) supp |= BIT(IWL_TLC_MNG_CH_WIDTH_80MHZ); if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_160) supp |= BIT(IWL_TLC_MNG_CH_WIDTH_160MHZ); return supp; } static u16 rs_fw_get_config_flags(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_link_sta *link_sta, const struct ieee80211_sta_he_cap *sband_he_cap) { struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap; struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap; struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap; bool vht_ena = vht_cap->vht_supported; u16 flags = 0; /* get STBC flags */ if (mvm->cfg->ht_params->stbc && (num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) > 1)) { if (he_cap->has_he && he_cap->he_cap_elem.phy_cap_info[2] & IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ) flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK; else if (vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK) flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK; else if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC) flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK; } if (mvm->cfg->ht_params->ldpc && ((ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING) || (vht_ena && (vht_cap->cap & IEEE80211_VHT_CAP_RXLDPC)))) flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK; /* consider LDPC support in case of HE */ if (he_cap->has_he && (he_cap->he_cap_elem.phy_cap_info[1] & IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD)) flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK; if (sband_he_cap && !(sband_he_cap->he_cap_elem.phy_cap_info[1] & IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD)) flags &= ~IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK; if (he_cap->has_he && (he_cap->he_cap_elem.phy_cap_info[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK && sband_he_cap && sband_he_cap->he_cap_elem.phy_cap_info[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK)) flags |= IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_1_MSK; return flags; } static int rs_fw_vht_highest_rx_mcs_index(const struct ieee80211_sta_vht_cap *vht_cap, int nss) { u16 rx_mcs = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map) & (0x3 << (2 * (nss - 1))); rx_mcs >>= (2 * (nss - 1)); switch (rx_mcs) { case IEEE80211_VHT_MCS_SUPPORT_0_7: return IWL_TLC_MNG_HT_RATE_MCS7; case IEEE80211_VHT_MCS_SUPPORT_0_8: return IWL_TLC_MNG_HT_RATE_MCS8; case IEEE80211_VHT_MCS_SUPPORT_0_9: return IWL_TLC_MNG_HT_RATE_MCS9; default: WARN_ON_ONCE(1); break; } return 0; } static void rs_fw_vht_set_enabled_rates(const struct ieee80211_link_sta *link_sta, const struct ieee80211_sta_vht_cap *vht_cap, struct iwl_tlc_config_cmd_v4 *cmd) { u16 supp; int i, highest_mcs; u8 max_nss = link_sta->rx_nss; struct ieee80211_vht_cap ieee_vht_cap = { .vht_cap_info = cpu_to_le32(vht_cap->cap), .supp_mcs = vht_cap->vht_mcs, }; /* the station support only a single receive chain */ if (link_sta->smps_mode == IEEE80211_SMPS_STATIC) max_nss = 1; for (i = 0; i < max_nss && i < IWL_TLC_NSS_MAX; i++) { int nss = i + 1; highest_mcs = rs_fw_vht_highest_rx_mcs_index(vht_cap, nss); if (!highest_mcs) continue; supp = BIT(highest_mcs + 1) - 1; if (link_sta->bandwidth == IEEE80211_STA_RX_BW_20) supp &= ~BIT(IWL_TLC_MNG_HT_RATE_MCS9); cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80] = cpu_to_le16(supp); /* * Check if VHT extended NSS indicates that the bandwidth/NSS * configuration is supported - only for MCS 0 since we already * decoded the MCS bits anyway ourselves. */ if (link_sta->bandwidth == IEEE80211_STA_RX_BW_160 && ieee80211_get_vht_max_nss(&ieee_vht_cap, IEEE80211_VHT_CHANWIDTH_160MHZ, 0, true, nss) >= nss) cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_160] = cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80]; } } static u16 rs_fw_he_ieee80211_mcs_to_rs_mcs(u16 mcs) { switch (mcs) { case IEEE80211_HE_MCS_SUPPORT_0_7: return BIT(IWL_TLC_MNG_HT_RATE_MCS7 + 1) - 1; case IEEE80211_HE_MCS_SUPPORT_0_9: return BIT(IWL_TLC_MNG_HT_RATE_MCS9 + 1) - 1; case IEEE80211_HE_MCS_SUPPORT_0_11: return BIT(IWL_TLC_MNG_HT_RATE_MCS11 + 1) - 1; case IEEE80211_HE_MCS_NOT_SUPPORTED: return 0; } WARN(1, "invalid HE MCS %d\n", mcs); return 0; } static void rs_fw_he_set_enabled_rates(const struct ieee80211_link_sta *link_sta, const struct ieee80211_sta_he_cap *sband_he_cap, struct iwl_tlc_config_cmd_v4 *cmd) { const struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap; u16 mcs_160 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160); u16 mcs_80 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80); u16 tx_mcs_80 = le16_to_cpu(sband_he_cap->he_mcs_nss_supp.tx_mcs_80); u16 tx_mcs_160 = le16_to_cpu(sband_he_cap->he_mcs_nss_supp.tx_mcs_160); int i; u8 nss = link_sta->rx_nss; /* the station support only a single receive chain */ if (link_sta->smps_mode == IEEE80211_SMPS_STATIC) nss = 1; for (i = 0; i < nss && i < IWL_TLC_NSS_MAX; i++) { u16 _mcs_160 = (mcs_160 >> (2 * i)) & 0x3; u16 _mcs_80 = (mcs_80 >> (2 * i)) & 0x3; u16 _tx_mcs_160 = (tx_mcs_160 >> (2 * i)) & 0x3; u16 _tx_mcs_80 = (tx_mcs_80 >> (2 * i)) & 0x3; /* If one side doesn't support - mark both as not supporting */ if (_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED || _tx_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED) { _mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED; _tx_mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED; } if (_mcs_80 > _tx_mcs_80) _mcs_80 = _tx_mcs_80; cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80] = cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_80)); /* If one side doesn't support - mark both as not supporting */ if (_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED || _tx_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED) { _mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED; _tx_mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED; } if (_mcs_160 > _tx_mcs_160) _mcs_160 = _tx_mcs_160; cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_160] = cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_160)); } } static u8 rs_fw_eht_max_nss(u8 rx_nss, u8 tx_nss) { u8 tx = u8_get_bits(tx_nss, IEEE80211_EHT_MCS_NSS_TX); u8 rx = u8_get_bits(rx_nss, IEEE80211_EHT_MCS_NSS_RX); /* the max nss that can be used, * is the min with our tx capa and the peer rx capa. */ return min(tx, rx); } #define MAX_NSS_MCS(mcs_num, rx, tx) \ rs_fw_eht_max_nss((rx)->rx_tx_mcs ##mcs_num## _max_nss, \ (tx)->rx_tx_mcs ##mcs_num## _max_nss) static void rs_fw_set_eht_mcs_nss(__le16 ht_rates[][3], enum IWL_TLC_MCS_PER_BW bw, u8 max_nss, u16 mcs_msk) { if (max_nss >= 2) ht_rates[IWL_TLC_NSS_2][bw] |= cpu_to_le16(mcs_msk); if (max_nss >= 1) ht_rates[IWL_TLC_NSS_1][bw] |= cpu_to_le16(mcs_msk); } static const struct ieee80211_eht_mcs_nss_supp_bw * rs_fw_rs_mcs2eht_mcs(enum IWL_TLC_MCS_PER_BW bw, const struct ieee80211_eht_mcs_nss_supp *eht_mcs) { switch (bw) { case IWL_TLC_MCS_PER_BW_80: return &eht_mcs->bw._80; case IWL_TLC_MCS_PER_BW_160: return &eht_mcs->bw._160; case IWL_TLC_MCS_PER_BW_320: return &eht_mcs->bw._320; default: return NULL; } } static void rs_fw_eht_set_enabled_rates(struct ieee80211_vif *vif, const struct ieee80211_link_sta *link_sta, const struct ieee80211_sta_he_cap *sband_he_cap, const struct ieee80211_sta_eht_cap *sband_eht_cap, struct iwl_tlc_config_cmd_v4 *cmd) { /* peer RX mcs capa */ const struct ieee80211_eht_mcs_nss_supp *eht_rx_mcs = &link_sta->eht_cap.eht_mcs_nss_supp; /* our TX mcs capa */ const struct ieee80211_eht_mcs_nss_supp *eht_tx_mcs = &sband_eht_cap->eht_mcs_nss_supp; enum IWL_TLC_MCS_PER_BW bw; struct ieee80211_eht_mcs_nss_supp_20mhz_only mcs_rx_20; struct ieee80211_eht_mcs_nss_supp_20mhz_only mcs_tx_20; /* peer is 20Mhz only */ if (vif->type == NL80211_IFTYPE_AP && !(link_sta->he_cap.he_cap_elem.phy_cap_info[0] & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) { mcs_rx_20 = eht_rx_mcs->only_20mhz; } else { mcs_rx_20.rx_tx_mcs7_max_nss = eht_rx_mcs->bw._80.rx_tx_mcs9_max_nss; mcs_rx_20.rx_tx_mcs9_max_nss = eht_rx_mcs->bw._80.rx_tx_mcs9_max_nss; mcs_rx_20.rx_tx_mcs11_max_nss = eht_rx_mcs->bw._80.rx_tx_mcs11_max_nss; mcs_rx_20.rx_tx_mcs13_max_nss = eht_rx_mcs->bw._80.rx_tx_mcs13_max_nss; } /* nic is 20Mhz only */ if (!(sband_he_cap->he_cap_elem.phy_cap_info[0] & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) { mcs_tx_20 = eht_tx_mcs->only_20mhz; } else { mcs_tx_20.rx_tx_mcs7_max_nss = eht_tx_mcs->bw._80.rx_tx_mcs9_max_nss; mcs_tx_20.rx_tx_mcs9_max_nss = eht_tx_mcs->bw._80.rx_tx_mcs9_max_nss; mcs_tx_20.rx_tx_mcs11_max_nss = eht_tx_mcs->bw._80.rx_tx_mcs11_max_nss; mcs_tx_20.rx_tx_mcs13_max_nss = eht_tx_mcs->bw._80.rx_tx_mcs13_max_nss; } /* rates for 20/40/80 bw */ bw = IWL_TLC_MCS_PER_BW_80; rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw, MAX_NSS_MCS(7, &mcs_rx_20, &mcs_tx_20), GENMASK(7, 0)); rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw, MAX_NSS_MCS(9, &mcs_rx_20, &mcs_tx_20), GENMASK(9, 8)); rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw, MAX_NSS_MCS(11, &mcs_rx_20, &mcs_tx_20), GENMASK(11, 10)); rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw, MAX_NSS_MCS(13, &mcs_rx_20, &mcs_tx_20), GENMASK(13, 12)); /* rate for 160/320 bw */ for (bw = IWL_TLC_MCS_PER_BW_160; bw <= IWL_TLC_MCS_PER_BW_320; bw++) { const struct ieee80211_eht_mcs_nss_supp_bw *mcs_rx = rs_fw_rs_mcs2eht_mcs(bw, eht_rx_mcs); const struct ieee80211_eht_mcs_nss_supp_bw *mcs_tx = rs_fw_rs_mcs2eht_mcs(bw, eht_tx_mcs); /* got unsupported index for bw */ if (!mcs_rx || !mcs_tx) continue; /* break out if we don't support the bandwidth */ if (cmd->max_ch_width < (bw + IWL_TLC_MNG_CH_WIDTH_80MHZ)) break; rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw, MAX_NSS_MCS(9, mcs_rx, mcs_tx), GENMASK(9, 0)); rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw, MAX_NSS_MCS(11, mcs_rx, mcs_tx), GENMASK(11, 10)); rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw, MAX_NSS_MCS(13, mcs_rx, mcs_tx), GENMASK(13, 12)); } /* the station support only a single receive chain */ if (link_sta->smps_mode == IEEE80211_SMPS_STATIC || link_sta->rx_nss < 2) memset(cmd->ht_rates[IWL_TLC_NSS_2], 0, sizeof(cmd->ht_rates[IWL_TLC_NSS_2])); } static void rs_fw_set_supp_rates(struct ieee80211_vif *vif, struct ieee80211_link_sta *link_sta, struct ieee80211_supported_band *sband, const struct ieee80211_sta_he_cap *sband_he_cap, const struct ieee80211_sta_eht_cap *sband_eht_cap, struct iwl_tlc_config_cmd_v4 *cmd) { int i; u16 supp = 0; unsigned long tmp; /* must be unsigned long for for_each_set_bit */ const struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap; const struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap; const struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap; /* non HT rates */ tmp = link_sta->supp_rates[sband->band]; for_each_set_bit(i, &tmp, BITS_PER_LONG) supp |= BIT(sband->bitrates[i].hw_value); cmd->non_ht_rates = cpu_to_le16(supp); cmd->mode = IWL_TLC_MNG_MODE_NON_HT; /* HT/VHT rates */ if (link_sta->eht_cap.has_eht && sband_he_cap && sband_eht_cap) { cmd->mode = IWL_TLC_MNG_MODE_EHT; rs_fw_eht_set_enabled_rates(vif, link_sta, sband_he_cap, sband_eht_cap, cmd); } else if (he_cap->has_he && sband_he_cap) { cmd->mode = IWL_TLC_MNG_MODE_HE; rs_fw_he_set_enabled_rates(link_sta, sband_he_cap, cmd); } else if (vht_cap->vht_supported) { cmd->mode = IWL_TLC_MNG_MODE_VHT; rs_fw_vht_set_enabled_rates(link_sta, vht_cap, cmd); } else if (ht_cap->ht_supported) { cmd->mode = IWL_TLC_MNG_MODE_HT; cmd->ht_rates[IWL_TLC_NSS_1][IWL_TLC_MCS_PER_BW_80] = cpu_to_le16(ht_cap->mcs.rx_mask[0]); /* the station support only a single receive chain */ if (link_sta->smps_mode == IEEE80211_SMPS_STATIC) cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_MCS_PER_BW_80] = 0; else cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_MCS_PER_BW_80] = cpu_to_le16(ht_cap->mcs.rx_mask[1]); } } void iwl_mvm_tlc_update_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_tlc_update_notif *notif; struct ieee80211_sta *sta; struct ieee80211_link_sta *link_sta; struct iwl_mvm_sta *mvmsta; struct iwl_mvm_link_sta *mvm_link_sta; struct iwl_lq_sta_rs_fw *lq_sta; u32 flags; rcu_read_lock(); notif = (void *)pkt->data; link_sta = rcu_dereference(mvm->fw_id_to_link_sta[notif->sta_id]); sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); if (IS_ERR_OR_NULL(sta) || !link_sta) { /* can happen in remove station flow where mvm removed internally * the station before removing from FW */ IWL_DEBUG_RATE(mvm, "Invalid mvm RCU pointer for sta id (%d) in TLC notification\n", notif->sta_id); goto out; } mvmsta = iwl_mvm_sta_from_mac80211(sta); if (!mvmsta) { IWL_ERR(mvm, "Invalid sta id (%d) in FW TLC notification\n", notif->sta_id); goto out; } flags = le32_to_cpu(notif->flags); mvm_link_sta = rcu_dereference(mvmsta->link[link_sta->link_id]); if (!mvm_link_sta) { IWL_DEBUG_RATE(mvm, "Invalid mvmsta RCU pointer for link (%d) of sta id (%d) in TLC notification\n", link_sta->link_id, notif->sta_id); goto out; } lq_sta = &mvm_link_sta->lq_sta.rs_fw; if (flags & IWL_TLC_NOTIF_FLAG_RATE) { char pretty_rate[100]; if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF, 0) < 3) { rs_pretty_print_rate_v1(pretty_rate, sizeof(pretty_rate), le32_to_cpu(notif->rate)); IWL_DEBUG_RATE(mvm, "Got rate in old format. Rate: %s. Converting.\n", pretty_rate); lq_sta->last_rate_n_flags = iwl_new_rate_from_v1(le32_to_cpu(notif->rate)); } else { lq_sta->last_rate_n_flags = le32_to_cpu(notif->rate); } rs_pretty_print_rate(pretty_rate, sizeof(pretty_rate), lq_sta->last_rate_n_flags); IWL_DEBUG_RATE(mvm, "new rate: %s\n", pretty_rate); } if (flags & IWL_TLC_NOTIF_FLAG_AMSDU && !mvm_link_sta->orig_amsdu_len) { u32 enabled = le32_to_cpu(notif->amsdu_enabled); u16 size = le32_to_cpu(notif->amsdu_size); int i; if (size < 2000) { size = 0; enabled = 0; } if (link_sta->agg.max_amsdu_len < size) { /* * In debug link_sta->agg.max_amsdu_len < size * so also check with orig_amsdu_len which holds the * original data before debugfs changed the value */ WARN_ON(mvm_link_sta->orig_amsdu_len < size); goto out; } mvmsta->amsdu_enabled = enabled; mvmsta->max_amsdu_len = size; link_sta->agg.max_rc_amsdu_len = mvmsta->max_amsdu_len; for (i = 0; i < IWL_MAX_TID_COUNT; i++) { if (mvmsta->amsdu_enabled & BIT(i)) link_sta->agg.max_tid_amsdu_len[i] = iwl_mvm_max_amsdu_size(mvm, sta, i); else /* * Not so elegant, but this will effectively * prevent AMSDU on this TID */ link_sta->agg.max_tid_amsdu_len[i] = 1; } IWL_DEBUG_RATE(mvm, "AMSDU update. AMSDU size: %d, AMSDU selected size: %d, AMSDU TID bitmap 0x%X\n", le32_to_cpu(notif->amsdu_size), size, mvmsta->amsdu_enabled); } out: rcu_read_unlock(); } u16 rs_fw_get_max_amsdu_len(struct ieee80211_sta *sta, struct ieee80211_bss_conf *link_conf, struct ieee80211_link_sta *link_sta) { const struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap; const struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap; const struct ieee80211_sta_eht_cap *eht_cap = &link_sta->eht_cap; if (WARN_ON_ONCE(!link_conf->chanreq.oper.chan)) return IEEE80211_MAX_MPDU_LEN_VHT_3895; if (link_conf->chanreq.oper.chan->band == NL80211_BAND_6GHZ) { switch (le16_get_bits(link_sta->he_6ghz_capa.capa, IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) { case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: return IEEE80211_MAX_MPDU_LEN_VHT_11454; case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: return IEEE80211_MAX_MPDU_LEN_VHT_7991; default: return IEEE80211_MAX_MPDU_LEN_VHT_3895; } } else if (link_conf->chanreq.oper.chan->band == NL80211_BAND_2GHZ && eht_cap->has_eht) { switch (u8_get_bits(eht_cap->eht_cap_elem.mac_cap_info[0], IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_MASK)) { case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_11454: return IEEE80211_MAX_MPDU_LEN_VHT_11454; case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_7991: return IEEE80211_MAX_MPDU_LEN_VHT_7991; default: return IEEE80211_MAX_MPDU_LEN_VHT_3895; } } else if (vht_cap->vht_supported) { switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) { case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: return IEEE80211_MAX_MPDU_LEN_VHT_11454; case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: return IEEE80211_MAX_MPDU_LEN_VHT_7991; default: return IEEE80211_MAX_MPDU_LEN_VHT_3895; } } else if (ht_cap->ht_supported) { if (ht_cap->cap & IEEE80211_HT_CAP_MAX_AMSDU) /* * agg is offloaded so we need to assume that agg * are enabled and max mpdu in ampdu is 4095 * (spec 802.11-2016 9.3.2.1) */ return IEEE80211_MAX_MPDU_LEN_HT_BA; else return IEEE80211_MAX_MPDU_LEN_HT_3839; } /* in legacy mode no amsdu is enabled so return zero */ return 0; } void iwl_mvm_rs_fw_rate_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_bss_conf *link_conf, struct ieee80211_link_sta *link_sta, enum nl80211_band band) { struct ieee80211_hw *hw = mvm->hw; struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, TLC_MNG_CONFIG_CMD); struct ieee80211_supported_band *sband = hw->wiphy->bands[band]; u16 max_amsdu_len = rs_fw_get_max_amsdu_len(sta, link_conf, link_sta); const struct ieee80211_sta_he_cap *sband_he_cap = ieee80211_get_he_iftype_cap_vif(sband, vif); const struct ieee80211_sta_eht_cap *sband_eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, vif); struct iwl_mvm_link_sta *mvm_link_sta; struct iwl_lq_sta_rs_fw *lq_sta; struct iwl_tlc_config_cmd_v4 cfg_cmd = { .max_ch_width = mvmsta->authorized ? rs_fw_bw_from_sta_bw(link_sta) : IWL_TLC_MNG_CH_WIDTH_20MHZ, .flags = cpu_to_le16(rs_fw_get_config_flags(mvm, vif, link_sta, sband_he_cap)), .chains = rs_fw_set_active_chains(iwl_mvm_get_valid_tx_ant(mvm)), .sgi_ch_width_supp = rs_fw_sgi_cw_support(link_sta), .max_mpdu_len = iwl_mvm_is_csum_supported(mvm) ? cpu_to_le16(max_amsdu_len) : 0, }; unsigned int link_id = link_conf->link_id; int cmd_ver; int ret; /* Enable external EHT LTF only for GL device and if there's * mutual support by AP and client */ if (CSR_HW_REV_TYPE(mvm->trans->hw_rev) == IWL_CFG_MAC_TYPE_GL && sband_eht_cap && sband_eht_cap->eht_cap_elem.phy_cap_info[5] & IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF && link_sta->eht_cap.has_eht && link_sta->eht_cap.eht_cap_elem.phy_cap_info[5] & IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF) { IWL_DEBUG_RATE(mvm, "Set support for Extra EHT LTF\n"); cfg_cmd.flags |= cpu_to_le16(IWL_TLC_MNG_CFG_FLAGS_EHT_EXTRA_LTF_MSK); } rcu_read_lock(); mvm_link_sta = rcu_dereference(mvmsta->link[link_id]); if (WARN_ON_ONCE(!mvm_link_sta)) { rcu_read_unlock(); return; } cfg_cmd.sta_id = mvm_link_sta->sta_id; lq_sta = &mvm_link_sta->lq_sta.rs_fw; memset(lq_sta, 0, offsetof(typeof(*lq_sta), pers)); rcu_read_unlock(); #ifdef CONFIG_IWLWIFI_DEBUGFS iwl_mvm_reset_frame_stats(mvm); #endif rs_fw_set_supp_rates(vif, link_sta, sband, sband_he_cap, sband_eht_cap, &cfg_cmd); /* * since TLC offload works with one mode we can assume * that only vht/ht is used and also set it as station max amsdu */ sta->deflink.agg.max_amsdu_len = max_amsdu_len; cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(DATA_PATH_GROUP, TLC_MNG_CONFIG_CMD), 0); IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, sta_id=%d, max_ch_width=%d, mode=%d\n", cfg_cmd.sta_id, cfg_cmd.max_ch_width, cfg_cmd.mode); IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, chains=0x%X, ch_wid_supp=%d, flags=0x%X\n", cfg_cmd.chains, cfg_cmd.sgi_ch_width_supp, cfg_cmd.flags); IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, mpdu_len=%d, no_ht_rate=0x%X, tx_op=%d\n", cfg_cmd.max_mpdu_len, cfg_cmd.non_ht_rates, cfg_cmd.max_tx_op); IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][0]=0x%X, ht_rate[1][0]=0x%X\n", cfg_cmd.ht_rates[0][0], cfg_cmd.ht_rates[1][0]); IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][1]=0x%X, ht_rate[1][1]=0x%X\n", cfg_cmd.ht_rates[0][1], cfg_cmd.ht_rates[1][1]); IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][2]=0x%X, ht_rate[1][2]=0x%X\n", cfg_cmd.ht_rates[0][2], cfg_cmd.ht_rates[1][2]); if (cmd_ver == 4) { ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC, sizeof(cfg_cmd), &cfg_cmd); } else if (cmd_ver < 4) { struct iwl_tlc_config_cmd_v3 cfg_cmd_v3 = { .sta_id = cfg_cmd.sta_id, .max_ch_width = cfg_cmd.max_ch_width, .mode = cfg_cmd.mode, .chains = cfg_cmd.chains, .amsdu = !!cfg_cmd.max_mpdu_len, .flags = cfg_cmd.flags, .non_ht_rates = cfg_cmd.non_ht_rates, .ht_rates[0][0] = cfg_cmd.ht_rates[0][0], .ht_rates[0][1] = cfg_cmd.ht_rates[0][1], .ht_rates[1][0] = cfg_cmd.ht_rates[1][0], .ht_rates[1][1] = cfg_cmd.ht_rates[1][1], .sgi_ch_width_supp = cfg_cmd.sgi_ch_width_supp, .max_mpdu_len = cfg_cmd.max_mpdu_len, }; u16 cmd_size = sizeof(cfg_cmd_v3); /* In old versions of the API the struct is 4 bytes smaller */ if (iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(DATA_PATH_GROUP, TLC_MNG_CONFIG_CMD), 0) < 3) cmd_size -= 4; ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC, cmd_size, &cfg_cmd_v3); } else { ret = -EINVAL; } if (ret) IWL_ERR(mvm, "Failed to send rate scale config (%d)\n", ret); } int rs_fw_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, bool enable) { /* TODO: need to introduce a new FW cmd since LQ cmd is not relevant */ IWL_DEBUG_RATE(mvm, "tx protection - not implemented yet.\n"); return 0; } void iwl_mvm_rs_add_sta_link(struct iwl_mvm *mvm, struct iwl_mvm_link_sta *link_sta) { struct iwl_lq_sta_rs_fw *lq_sta; lq_sta = &link_sta->lq_sta.rs_fw; lq_sta->pers.drv = mvm; lq_sta->pers.sta_id = link_sta->sta_id; lq_sta->pers.chains = 0; memset(lq_sta->pers.chain_signal, 0, sizeof(lq_sta->pers.chain_signal)); lq_sta->pers.last_rssi = S8_MIN; lq_sta->last_rate_n_flags = 0; #ifdef CONFIG_MAC80211_DEBUGFS lq_sta->pers.dbg_fixed_rate = 0; #endif } void iwl_mvm_rs_add_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta) { unsigned int link_id; IWL_DEBUG_RATE(mvm, "create station rate scale window\n"); for (link_id = 0; link_id < ARRAY_SIZE(mvmsta->link); link_id++) { struct iwl_mvm_link_sta *link = rcu_dereference_protected(mvmsta->link[link_id], lockdep_is_held(&mvm->mutex)); if (!link) continue; iwl_mvm_rs_add_sta_link(mvm, link); } }