268 lines · c
1// SPDX-License-Identifier: ISC2/* Copyright (C) 2023 MediaTek Inc. */3 4#include "mt76_connac.h"5#include "mt76_connac3_mac.h"6#include "dma.h"7 8#define HE_BITS(f) cpu_to_le16(IEEE80211_RADIOTAP_HE_##f)9#define EHT_BITS(f) cpu_to_le32(IEEE80211_RADIOTAP_EHT_##f)10#define HE_PREP(f, m, v) le16_encode_bits(le32_get_bits(v, MT_CRXV_HE_##m),\11 IEEE80211_RADIOTAP_HE_##f)12#define EHT_PREP(f, m, v) le32_encode_bits(le32_get_bits(v, MT_CRXV_EHT_##m),\13 IEEE80211_RADIOTAP_EHT_##f)14 15static void16mt76_connac3_mac_decode_he_radiotap_ru(struct mt76_rx_status *status,17 struct ieee80211_radiotap_he *he,18 __le32 *rxv)19{20 u32 ru = le32_get_bits(rxv[0], MT_PRXV_HE_RU_ALLOC), offs = 0;21 22 status->bw = RATE_INFO_BW_HE_RU;23 24 switch (ru) {25 case 0 ... 36:26 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;27 offs = ru;28 break;29 case 37 ... 52:30 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;31 offs = ru - 37;32 break;33 case 53 ... 60:34 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;35 offs = ru - 53;36 break;37 case 61 ... 64:38 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;39 offs = ru - 61;40 break;41 case 65 ... 66:42 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;43 offs = ru - 65;44 break;45 case 67:46 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;47 break;48 case 68:49 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;50 break;51 }52 53 he->data1 |= HE_BITS(DATA1_BW_RU_ALLOC_KNOWN);54 he->data2 |= HE_BITS(DATA2_RU_OFFSET_KNOWN) |55 le16_encode_bits(offs,56 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);57}58 59#define MU_PREP(f, v) le16_encode_bits(v, IEEE80211_RADIOTAP_HE_MU_##f)60static void61mt76_connac3_mac_decode_he_mu_radiotap(struct sk_buff *skb, __le32 *rxv)62{63 struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;64 static const struct ieee80211_radiotap_he_mu mu_known = {65 .flags1 = HE_BITS(MU_FLAGS1_SIG_B_MCS_KNOWN) |66 HE_BITS(MU_FLAGS1_SIG_B_DCM_KNOWN) |67 HE_BITS(MU_FLAGS1_CH1_RU_KNOWN) |68 HE_BITS(MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN),69 .flags2 = HE_BITS(MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),70 };71 struct ieee80211_radiotap_he_mu *he_mu;72 73 status->flag |= RX_FLAG_RADIOTAP_HE_MU;74 75 he_mu = skb_push(skb, sizeof(mu_known));76 memcpy(he_mu, &mu_known, sizeof(mu_known));77 78 he_mu->flags1 |= MU_PREP(FLAGS1_SIG_B_MCS, status->rate_idx);79 if (status->he_dcm)80 he_mu->flags1 |= MU_PREP(FLAGS1_SIG_B_DCM, status->he_dcm);81 82 he_mu->flags2 |= MU_PREP(FLAGS2_BW_FROM_SIG_A_BW, status->bw) |83 MU_PREP(FLAGS2_SIG_B_SYMS_USERS,84 le32_get_bits(rxv[4], MT_CRXV_HE_NUM_USER));85 86 he_mu->ru_ch1[0] = le32_get_bits(rxv[16], MT_CRXV_HE_RU0) & 0xff;87 88 if (status->bw >= RATE_INFO_BW_40) {89 he_mu->flags1 |= HE_BITS(MU_FLAGS1_CH2_RU_KNOWN);90 he_mu->ru_ch2[0] = le32_get_bits(rxv[16], MT_CRXV_HE_RU1) & 0xff;91 }92 93 if (status->bw >= RATE_INFO_BW_80) {94 u32 ru_h, ru_l;95 96 he_mu->ru_ch1[1] = le32_get_bits(rxv[16], MT_CRXV_HE_RU2) & 0xff;97 98 ru_l = le32_get_bits(rxv[16], MT_CRXV_HE_RU3_L);99 ru_h = le32_get_bits(rxv[17], MT_CRXV_HE_RU3_H) & 0x7;100 he_mu->ru_ch2[1] = (u8)(ru_l | ru_h << 4);101 }102}103 104void mt76_connac3_mac_decode_he_radiotap(struct sk_buff *skb, __le32 *rxv,105 u8 mode)106{107 struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;108 static const struct ieee80211_radiotap_he known = {109 .data1 = HE_BITS(DATA1_DATA_MCS_KNOWN) |110 HE_BITS(DATA1_DATA_DCM_KNOWN) |111 HE_BITS(DATA1_STBC_KNOWN) |112 HE_BITS(DATA1_CODING_KNOWN) |113 HE_BITS(DATA1_LDPC_XSYMSEG_KNOWN) |114 HE_BITS(DATA1_DOPPLER_KNOWN) |115 HE_BITS(DATA1_SPTL_REUSE_KNOWN) |116 HE_BITS(DATA1_BSS_COLOR_KNOWN),117 .data2 = HE_BITS(DATA2_GI_KNOWN) |118 HE_BITS(DATA2_TXBF_KNOWN) |119 HE_BITS(DATA2_PE_DISAMBIG_KNOWN) |120 HE_BITS(DATA2_TXOP_KNOWN),121 };122 u32 ltf_size = le32_get_bits(rxv[4], MT_CRXV_HE_LTF_SIZE) + 1;123 struct ieee80211_radiotap_he *he;124 125 status->flag |= RX_FLAG_RADIOTAP_HE;126 127 he = skb_push(skb, sizeof(known));128 memcpy(he, &known, sizeof(known));129 130 he->data3 = HE_PREP(DATA3_BSS_COLOR, BSS_COLOR, rxv[9]) |131 HE_PREP(DATA3_LDPC_XSYMSEG, LDPC_EXT_SYM, rxv[4]);132 he->data4 = HE_PREP(DATA4_SU_MU_SPTL_REUSE, SR_MASK, rxv[13]);133 he->data5 = HE_PREP(DATA5_PE_DISAMBIG, PE_DISAMBIG, rxv[5]) |134 le16_encode_bits(ltf_size,135 IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);136 if (le32_to_cpu(rxv[0]) & MT_PRXV_TXBF)137 he->data5 |= HE_BITS(DATA5_TXBF);138 he->data6 = HE_PREP(DATA6_TXOP, TXOP_DUR, rxv[9]) |139 HE_PREP(DATA6_DOPPLER, DOPPLER, rxv[9]);140 141 switch (mode) {142 case MT_PHY_TYPE_HE_SU:143 he->data1 |= HE_BITS(DATA1_FORMAT_SU) |144 HE_BITS(DATA1_UL_DL_KNOWN) |145 HE_BITS(DATA1_BEAM_CHANGE_KNOWN) |146 HE_BITS(DATA1_BW_RU_ALLOC_KNOWN);147 148 he->data3 |= HE_PREP(DATA3_BEAM_CHANGE, BEAM_CHNG, rxv[8]) |149 HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]);150 break;151 case MT_PHY_TYPE_HE_EXT_SU:152 he->data1 |= HE_BITS(DATA1_FORMAT_EXT_SU) |153 HE_BITS(DATA1_UL_DL_KNOWN) |154 HE_BITS(DATA1_BW_RU_ALLOC_KNOWN);155 156 he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]);157 break;158 case MT_PHY_TYPE_HE_MU:159 he->data1 |= HE_BITS(DATA1_FORMAT_MU) |160 HE_BITS(DATA1_UL_DL_KNOWN);161 162 he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]);163 he->data4 |= HE_PREP(DATA4_MU_STA_ID, MU_AID, rxv[8]);164 165 mt76_connac3_mac_decode_he_radiotap_ru(status, he, rxv);166 mt76_connac3_mac_decode_he_mu_radiotap(skb, rxv);167 break;168 case MT_PHY_TYPE_HE_TB:169 he->data1 |= HE_BITS(DATA1_FORMAT_TRIG) |170 HE_BITS(DATA1_SPTL_REUSE2_KNOWN) |171 HE_BITS(DATA1_SPTL_REUSE3_KNOWN) |172 HE_BITS(DATA1_SPTL_REUSE4_KNOWN);173 174 he->data4 |= HE_PREP(DATA4_TB_SPTL_REUSE1, SR_MASK, rxv[13]) |175 HE_PREP(DATA4_TB_SPTL_REUSE2, SR1_MASK, rxv[13]) |176 HE_PREP(DATA4_TB_SPTL_REUSE3, SR2_MASK, rxv[13]) |177 HE_PREP(DATA4_TB_SPTL_REUSE4, SR3_MASK, rxv[13]);178 179 mt76_connac3_mac_decode_he_radiotap_ru(status, he, rxv);180 break;181 default:182 break;183 }184}185EXPORT_SYMBOL_GPL(mt76_connac3_mac_decode_he_radiotap);186 187static void *188mt76_connac3_mac_radiotap_push_tlv(struct sk_buff *skb, u16 type, u16 len)189{190 struct ieee80211_radiotap_tlv *tlv;191 192 tlv = skb_push(skb, sizeof(*tlv) + len);193 tlv->type = cpu_to_le16(type);194 tlv->len = cpu_to_le16(len);195 memset(tlv->data, 0, len);196 197 return tlv->data;198}199 200void mt76_connac3_mac_decode_eht_radiotap(struct sk_buff *skb, __le32 *rxv,201 u8 mode)202{203 struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;204 struct ieee80211_radiotap_eht_usig *usig;205 struct ieee80211_radiotap_eht *eht;206 u32 ltf_size = le32_get_bits(rxv[4], MT_CRXV_HE_LTF_SIZE) + 1;207 u8 bw = FIELD_GET(MT_PRXV_FRAME_MODE, le32_to_cpu(rxv[2]));208 209 if (WARN_ONCE(skb_mac_header(skb) != skb->data,210 "Should push tlv at the top of mac hdr"))211 return;212 213 eht = mt76_connac3_mac_radiotap_push_tlv(skb, IEEE80211_RADIOTAP_EHT,214 sizeof(*eht) + sizeof(u32));215 usig = mt76_connac3_mac_radiotap_push_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG,216 sizeof(*usig));217 218 status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;219 220 eht->known |= EHT_BITS(KNOWN_SPATIAL_REUSE) |221 EHT_BITS(KNOWN_GI) |222 EHT_BITS(KNOWN_EHT_LTF) |223 EHT_BITS(KNOWN_LDPC_EXTRA_SYM_OM) |224 EHT_BITS(KNOWN_PE_DISAMBIGUITY_OM) |225 EHT_BITS(KNOWN_NSS_S);226 227 eht->data[0] |=228 EHT_PREP(DATA0_SPATIAL_REUSE, SR_MASK, rxv[13]) |229 cpu_to_le32(FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI, status->eht.gi) |230 FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF, ltf_size)) |231 EHT_PREP(DATA0_PE_DISAMBIGUITY_OM, PE_DISAMBIG, rxv[5]) |232 EHT_PREP(DATA0_LDPC_EXTRA_SYM_OM, LDPC_EXT_SYM, rxv[4]);233 234 eht->data[7] |= le32_encode_bits(status->nss, IEEE80211_RADIOTAP_EHT_DATA7_NSS_S);235 236 eht->user_info[0] |=237 EHT_BITS(USER_INFO_MCS_KNOWN) |238 EHT_BITS(USER_INFO_CODING_KNOWN) |239 EHT_BITS(USER_INFO_NSS_KNOWN_O) |240 EHT_BITS(USER_INFO_BEAMFORMING_KNOWN_O) |241 EHT_BITS(USER_INFO_DATA_FOR_USER) |242 le32_encode_bits(status->rate_idx, IEEE80211_RADIOTAP_EHT_USER_INFO_MCS) |243 le32_encode_bits(status->nss, IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O);244 245 if (le32_to_cpu(rxv[0]) & MT_PRXV_TXBF)246 eht->user_info[0] |= EHT_BITS(USER_INFO_BEAMFORMING_O);247 248 if (le32_to_cpu(rxv[0]) & MT_PRXV_HT_AD_CODE)249 eht->user_info[0] |= EHT_BITS(USER_INFO_CODING);250 251 if (mode == MT_PHY_TYPE_EHT_MU)252 eht->user_info[0] |= EHT_BITS(USER_INFO_STA_ID_KNOWN) |253 EHT_PREP(USER_INFO_STA_ID, MU_AID, rxv[8]);254 255 usig->common |=256 EHT_BITS(USIG_COMMON_PHY_VER_KNOWN) |257 EHT_BITS(USIG_COMMON_BW_KNOWN) |258 EHT_BITS(USIG_COMMON_UL_DL_KNOWN) |259 EHT_BITS(USIG_COMMON_BSS_COLOR_KNOWN) |260 EHT_BITS(USIG_COMMON_TXOP_KNOWN) |261 le32_encode_bits(0, IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER) |262 le32_encode_bits(bw, IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW) |263 EHT_PREP(USIG_COMMON_UL_DL, UPLINK, rxv[5]) |264 EHT_PREP(USIG_COMMON_BSS_COLOR, BSS_COLOR, rxv[9]) |265 EHT_PREP(USIG_COMMON_TXOP, TXOP_DUR, rxv[9]);266}267EXPORT_SYMBOL_GPL(mt76_connac3_mac_decode_eht_radiotap);268