| // SPDX-License-Identifier: ISC |
| /* Copyright (C) 2023 MediaTek Inc. */ |
| |
| #include "mt76_connac.h" |
| #include "mt76_connac3_mac.h" |
| #include "dma.h" |
| |
| #define HE_BITS(f) cpu_to_le16(IEEE80211_RADIOTAP_HE_##f) |
| #define EHT_BITS(f) cpu_to_le32(IEEE80211_RADIOTAP_EHT_##f) |
| #define HE_PREP(f, m, v) le16_encode_bits(le32_get_bits(v, MT_CRXV_HE_##m),\ |
| IEEE80211_RADIOTAP_HE_##f) |
| #define EHT_PREP(f, m, v) le32_encode_bits(le32_get_bits(v, MT_CRXV_EHT_##m),\ |
| IEEE80211_RADIOTAP_EHT_##f) |
| |
| static void |
| mt76_connac3_mac_decode_he_radiotap_ru(struct mt76_rx_status *status, |
| struct ieee80211_radiotap_he *he, |
| __le32 *rxv) |
| { |
| u32 ru = le32_get_bits(rxv[0], MT_PRXV_HE_RU_ALLOC), offs = 0; |
| |
| status->bw = RATE_INFO_BW_HE_RU; |
| |
| switch (ru) { |
| case 0 ... 36: |
| status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26; |
| offs = ru; |
| break; |
| case 37 ... 52: |
| status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52; |
| offs = ru - 37; |
| break; |
| case 53 ... 60: |
| status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; |
| offs = ru - 53; |
| break; |
| case 61 ... 64: |
| status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242; |
| offs = ru - 61; |
| break; |
| case 65 ... 66: |
| status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484; |
| offs = ru - 65; |
| break; |
| case 67: |
| status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996; |
| break; |
| case 68: |
| status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996; |
| break; |
| } |
| |
| he->data1 |= HE_BITS(DATA1_BW_RU_ALLOC_KNOWN); |
| he->data2 |= HE_BITS(DATA2_RU_OFFSET_KNOWN) | |
| le16_encode_bits(offs, |
| IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET); |
| } |
| |
| #define MU_PREP(f, v) le16_encode_bits(v, IEEE80211_RADIOTAP_HE_MU_##f) |
| static void |
| mt76_connac3_mac_decode_he_mu_radiotap(struct sk_buff *skb, __le32 *rxv) |
| { |
| struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; |
| static const struct ieee80211_radiotap_he_mu mu_known = { |
| .flags1 = HE_BITS(MU_FLAGS1_SIG_B_MCS_KNOWN) | |
| HE_BITS(MU_FLAGS1_SIG_B_DCM_KNOWN) | |
| HE_BITS(MU_FLAGS1_CH1_RU_KNOWN) | |
| HE_BITS(MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN), |
| .flags2 = HE_BITS(MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN), |
| }; |
| struct ieee80211_radiotap_he_mu *he_mu; |
| |
| status->flag |= RX_FLAG_RADIOTAP_HE_MU; |
| |
| he_mu = skb_push(skb, sizeof(mu_known)); |
| memcpy(he_mu, &mu_known, sizeof(mu_known)); |
| |
| he_mu->flags1 |= MU_PREP(FLAGS1_SIG_B_MCS, status->rate_idx); |
| if (status->he_dcm) |
| he_mu->flags1 |= MU_PREP(FLAGS1_SIG_B_DCM, status->he_dcm); |
| |
| he_mu->flags2 |= MU_PREP(FLAGS2_BW_FROM_SIG_A_BW, status->bw) | |
| MU_PREP(FLAGS2_SIG_B_SYMS_USERS, |
| le32_get_bits(rxv[4], MT_CRXV_HE_NUM_USER)); |
| |
| he_mu->ru_ch1[0] = le32_get_bits(rxv[16], MT_CRXV_HE_RU0) & 0xff; |
| |
| if (status->bw >= RATE_INFO_BW_40) { |
| he_mu->flags1 |= HE_BITS(MU_FLAGS1_CH2_RU_KNOWN); |
| he_mu->ru_ch2[0] = le32_get_bits(rxv[16], MT_CRXV_HE_RU1) & 0xff; |
| } |
| |
| if (status->bw >= RATE_INFO_BW_80) { |
| u32 ru_h, ru_l; |
| |
| he_mu->ru_ch1[1] = le32_get_bits(rxv[16], MT_CRXV_HE_RU2) & 0xff; |
| |
| ru_l = le32_get_bits(rxv[16], MT_CRXV_HE_RU3_L); |
| ru_h = le32_get_bits(rxv[17], MT_CRXV_HE_RU3_H) & 0x7; |
| he_mu->ru_ch2[1] = (u8)(ru_l | ru_h << 4); |
| } |
| } |
| |
| void mt76_connac3_mac_decode_he_radiotap(struct sk_buff *skb, __le32 *rxv, |
| u8 mode) |
| { |
| struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; |
| static const struct ieee80211_radiotap_he known = { |
| .data1 = HE_BITS(DATA1_DATA_MCS_KNOWN) | |
| HE_BITS(DATA1_DATA_DCM_KNOWN) | |
| HE_BITS(DATA1_STBC_KNOWN) | |
| HE_BITS(DATA1_CODING_KNOWN) | |
| HE_BITS(DATA1_LDPC_XSYMSEG_KNOWN) | |
| HE_BITS(DATA1_DOPPLER_KNOWN) | |
| HE_BITS(DATA1_SPTL_REUSE_KNOWN) | |
| HE_BITS(DATA1_BSS_COLOR_KNOWN), |
| .data2 = HE_BITS(DATA2_GI_KNOWN) | |
| HE_BITS(DATA2_TXBF_KNOWN) | |
| HE_BITS(DATA2_PE_DISAMBIG_KNOWN) | |
| HE_BITS(DATA2_TXOP_KNOWN), |
| }; |
| u32 ltf_size = le32_get_bits(rxv[4], MT_CRXV_HE_LTF_SIZE) + 1; |
| struct ieee80211_radiotap_he *he; |
| |
| status->flag |= RX_FLAG_RADIOTAP_HE; |
| |
| he = skb_push(skb, sizeof(known)); |
| memcpy(he, &known, sizeof(known)); |
| |
| he->data3 = HE_PREP(DATA3_BSS_COLOR, BSS_COLOR, rxv[9]) | |
| HE_PREP(DATA3_LDPC_XSYMSEG, LDPC_EXT_SYM, rxv[4]); |
| he->data4 = HE_PREP(DATA4_SU_MU_SPTL_REUSE, SR_MASK, rxv[13]); |
| he->data5 = HE_PREP(DATA5_PE_DISAMBIG, PE_DISAMBIG, rxv[5]) | |
| le16_encode_bits(ltf_size, |
| IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE); |
| if (le32_to_cpu(rxv[0]) & MT_PRXV_TXBF) |
| he->data5 |= HE_BITS(DATA5_TXBF); |
| he->data6 = HE_PREP(DATA6_TXOP, TXOP_DUR, rxv[9]) | |
| HE_PREP(DATA6_DOPPLER, DOPPLER, rxv[9]); |
| |
| switch (mode) { |
| case MT_PHY_TYPE_HE_SU: |
| he->data1 |= HE_BITS(DATA1_FORMAT_SU) | |
| HE_BITS(DATA1_UL_DL_KNOWN) | |
| HE_BITS(DATA1_BEAM_CHANGE_KNOWN) | |
| HE_BITS(DATA1_BW_RU_ALLOC_KNOWN); |
| |
| he->data3 |= HE_PREP(DATA3_BEAM_CHANGE, BEAM_CHNG, rxv[8]) | |
| HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]); |
| break; |
| case MT_PHY_TYPE_HE_EXT_SU: |
| he->data1 |= HE_BITS(DATA1_FORMAT_EXT_SU) | |
| HE_BITS(DATA1_UL_DL_KNOWN) | |
| HE_BITS(DATA1_BW_RU_ALLOC_KNOWN); |
| |
| he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]); |
| break; |
| case MT_PHY_TYPE_HE_MU: |
| he->data1 |= HE_BITS(DATA1_FORMAT_MU) | |
| HE_BITS(DATA1_UL_DL_KNOWN); |
| |
| he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]); |
| he->data4 |= HE_PREP(DATA4_MU_STA_ID, MU_AID, rxv[8]); |
| |
| mt76_connac3_mac_decode_he_radiotap_ru(status, he, rxv); |
| mt76_connac3_mac_decode_he_mu_radiotap(skb, rxv); |
| break; |
| case MT_PHY_TYPE_HE_TB: |
| he->data1 |= HE_BITS(DATA1_FORMAT_TRIG) | |
| HE_BITS(DATA1_SPTL_REUSE2_KNOWN) | |
| HE_BITS(DATA1_SPTL_REUSE3_KNOWN) | |
| HE_BITS(DATA1_SPTL_REUSE4_KNOWN); |
| |
| he->data4 |= HE_PREP(DATA4_TB_SPTL_REUSE1, SR_MASK, rxv[13]) | |
| HE_PREP(DATA4_TB_SPTL_REUSE2, SR1_MASK, rxv[13]) | |
| HE_PREP(DATA4_TB_SPTL_REUSE3, SR2_MASK, rxv[13]) | |
| HE_PREP(DATA4_TB_SPTL_REUSE4, SR3_MASK, rxv[13]); |
| |
| mt76_connac3_mac_decode_he_radiotap_ru(status, he, rxv); |
| break; |
| default: |
| break; |
| } |
| } |
| EXPORT_SYMBOL_GPL(mt76_connac3_mac_decode_he_radiotap); |
| |
| static void * |
| mt76_connac3_mac_radiotap_push_tlv(struct sk_buff *skb, u16 type, u16 len) |
| { |
| struct ieee80211_radiotap_tlv *tlv; |
| |
| tlv = skb_push(skb, sizeof(*tlv) + len); |
| tlv->type = cpu_to_le16(type); |
| tlv->len = cpu_to_le16(len); |
| memset(tlv->data, 0, len); |
| |
| return tlv->data; |
| } |
| |
| void mt76_connac3_mac_decode_eht_radiotap(struct sk_buff *skb, __le32 *rxv, |
| u8 mode) |
| { |
| struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; |
| struct ieee80211_radiotap_eht_usig *usig; |
| struct ieee80211_radiotap_eht *eht; |
| u32 ltf_size = le32_get_bits(rxv[4], MT_CRXV_HE_LTF_SIZE) + 1; |
| u8 bw = FIELD_GET(MT_PRXV_FRAME_MODE, le32_to_cpu(rxv[2])); |
| |
| if (WARN_ONCE(skb_mac_header(skb) != skb->data, |
| "Should push tlv at the top of mac hdr")) |
| return; |
| |
| eht = mt76_connac3_mac_radiotap_push_tlv(skb, IEEE80211_RADIOTAP_EHT, |
| sizeof(*eht) + sizeof(u32)); |
| usig = mt76_connac3_mac_radiotap_push_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG, |
| sizeof(*usig)); |
| |
| status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END; |
| |
| eht->known |= EHT_BITS(KNOWN_SPATIAL_REUSE) | |
| EHT_BITS(KNOWN_GI) | |
| EHT_BITS(KNOWN_EHT_LTF) | |
| EHT_BITS(KNOWN_LDPC_EXTRA_SYM_OM) | |
| EHT_BITS(KNOWN_PE_DISAMBIGUITY_OM) | |
| EHT_BITS(KNOWN_NSS_S); |
| |
| eht->data[0] |= |
| EHT_PREP(DATA0_SPATIAL_REUSE, SR_MASK, rxv[13]) | |
| cpu_to_le32(FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI, status->eht.gi) | |
| FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF, ltf_size)) | |
| EHT_PREP(DATA0_PE_DISAMBIGUITY_OM, PE_DISAMBIG, rxv[5]) | |
| EHT_PREP(DATA0_LDPC_EXTRA_SYM_OM, LDPC_EXT_SYM, rxv[4]); |
| |
| eht->data[7] |= le32_encode_bits(status->nss, IEEE80211_RADIOTAP_EHT_DATA7_NSS_S); |
| |
| eht->user_info[0] |= |
| EHT_BITS(USER_INFO_MCS_KNOWN) | |
| EHT_BITS(USER_INFO_CODING_KNOWN) | |
| EHT_BITS(USER_INFO_NSS_KNOWN_O) | |
| EHT_BITS(USER_INFO_BEAMFORMING_KNOWN_O) | |
| EHT_BITS(USER_INFO_DATA_FOR_USER) | |
| le32_encode_bits(status->rate_idx, IEEE80211_RADIOTAP_EHT_USER_INFO_MCS) | |
| le32_encode_bits(status->nss, IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O); |
| |
| if (le32_to_cpu(rxv[0]) & MT_PRXV_TXBF) |
| eht->user_info[0] |= EHT_BITS(USER_INFO_BEAMFORMING_O); |
| |
| if (le32_to_cpu(rxv[0]) & MT_PRXV_HT_AD_CODE) |
| eht->user_info[0] |= EHT_BITS(USER_INFO_CODING); |
| |
| if (mode == MT_PHY_TYPE_EHT_MU) |
| eht->user_info[0] |= EHT_BITS(USER_INFO_STA_ID_KNOWN) | |
| EHT_PREP(USER_INFO_STA_ID, MU_AID, rxv[8]); |
| |
| usig->common |= |
| EHT_BITS(USIG_COMMON_PHY_VER_KNOWN) | |
| EHT_BITS(USIG_COMMON_BW_KNOWN) | |
| EHT_BITS(USIG_COMMON_UL_DL_KNOWN) | |
| EHT_BITS(USIG_COMMON_BSS_COLOR_KNOWN) | |
| EHT_BITS(USIG_COMMON_TXOP_KNOWN) | |
| le32_encode_bits(0, IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER) | |
| le32_encode_bits(bw, IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW) | |
| EHT_PREP(USIG_COMMON_UL_DL, UPLINK, rxv[5]) | |
| EHT_PREP(USIG_COMMON_BSS_COLOR, BSS_COLOR, rxv[9]) | |
| EHT_PREP(USIG_COMMON_TXOP, TXOP_DUR, rxv[9]); |
| } |
| EXPORT_SYMBOL_GPL(mt76_connac3_mac_decode_eht_radiotap); |
