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wifi: mt76: mt7925: add EHT radiotap support in monitor mode

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Add IEEE80211_RADIOTAP_EHT and IEEE80211_RADIOTAP_EHT_USIG radiotap
to fill in EHT information, such as MCS, NSS, GI and bandwidth.

Co-developed-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Deren Wu
2024-04-19 13:25:55 +02:00
committed by Felix Fietkau
parent 1d0bd57e58
commit 1d6e4f7de8
4 changed files with 122 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mt76_connac3_mac.c
+85
View File
@@ -6,8 +6,11 @@
#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,
@@ -180,3 +183,85 @@ void mt76_connac3_mac_decode_he_radiotap(struct sk_buff *skb, __le32 *rxv,
}
}
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);