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8821cu-20210916/core/monitor/rtw_radiotap.c

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initial commit
2022-11-17 14:26:57 +00:00
/******************************************************************************
*
* Copyright(c) 2007 - 2017 Realtek Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*****************************************************************************/
#define _RTW_RADIOTAP_C_
#ifdef CONFIG_WIFI_MONITOR
#include <drv_types.h>
#include <hal_data.h>
#define CHAN2FREQ(a) ((a < 14) ? (2407+5*a) : (5000+5*a))
#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 20, 0))
#define IEEE80211_RADIOTAP_ZERO_LEN_PSDU 26
#define IEEE80211_RADIOTAP_LSIG 27
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0))
#define IEEE80211_RADIOTAP_TIMESTAMP 22
/* For IEEE80211_RADIOTAP_TIMESTAMP */
#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MASK 0x000F
#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MS 0x0000
#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US 0x0001
#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_NS 0x0003
#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_MASK 0x00F0
#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_BEGIN_MDPU 0x0000
#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_MPDU 0x0010
#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_PPDU 0x0020
#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ 0x0030
#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_UNKNOWN 0x00F0
#define IEEE80211_RADIOTAP_TIMESTAMP_FLAG_64BIT 0x00
#define IEEE80211_RADIOTAP_TIMESTAMP_FLAG_32BIT 0x01
#define IEEE80211_RADIOTAP_TIMESTAMP_FLAG_ACCURACY 0x02
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0))
/* for IEEE80211_RADIOTAP_CHANNEL */
#define IEEE80211_CHAN_GSM 0x1000 /* GSM (900 MHz) */
#define IEEE80211_CHAN_STURBO 0x2000 /* Static Turbo */
#define IEEE80211_CHAN_HALF 0x4000 /* Half channel (10 MHz wide) */
#define IEEE80211_CHAN_QUARTER 0x8000 /* Quarter channel (5 MHz wide) */
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 8, 0))
#define IEEE80211_RADIOTAP_VHT 21
/* For IEEE80211_RADIOTAP_VHT */
#define IEEE80211_RADIOTAP_VHT_KNOWN_STBC 0x0001
#define IEEE80211_RADIOTAP_VHT_KNOWN_TXOP_PS_NA 0x0002
#define IEEE80211_RADIOTAP_VHT_KNOWN_GI 0x0004
#define IEEE80211_RADIOTAP_VHT_KNOWN_SGI_NSYM_DIS 0x0008
#define IEEE80211_RADIOTAP_VHT_KNOWN_LDPC_EXTRA_OFDM_SYM 0x0010
#define IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED 0x0020
#define IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH 0x0040
#define IEEE80211_RADIOTAP_VHT_KNOWN_GROUP_ID 0x0080
#define IEEE80211_RADIOTAP_VHT_KNOWN_PARTIAL_AID 0x0100
#define IEEE80211_RADIOTAP_VHT_FLAG_STBC 0x01
#define IEEE80211_RADIOTAP_VHT_FLAG_TXOP_PS_NA 0x02
#define IEEE80211_RADIOTAP_VHT_FLAG_SGI 0x04
#define IEEE80211_RADIOTAP_VHT_FLAG_SGI_NSYM_M10_9 0x08
#define IEEE80211_RADIOTAP_VHT_FLAG_LDPC_EXTRA_OFDM_SYM 0x10
#define IEEE80211_RADIOTAP_VHT_FLAG_BEAMFORMED 0x20
#elif (LINUX_VERSION_CODE < KERNEL_VERSION(3, 15, 0))
#define IEEE80211_RADIOTAP_CODING_LDPC_USER0 0x01
#define IEEE80211_RADIOTAP_CODING_LDPC_USER1 0x02
#define IEEE80211_RADIOTAP_CODING_LDPC_USER2 0x04
#define IEEE80211_RADIOTAP_CODING_LDPC_USER3 0x08
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0))
#define IEEE80211_RADIOTAP_AMPDU_STATUS 20
/* For IEEE80211_RADIOTAP_AMPDU_STATUS */
#define IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN 0x0001
#define IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN 0x0002
#define IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN 0x0004
#define IEEE80211_RADIOTAP_AMPDU_IS_LAST 0x0008
#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR 0x0010
#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN 0x0020
#elif (LINUX_VERSION_CODE < KERNEL_VERSION(4, 17, 0))
#define IEEE80211_RADIOTAP_AMPDU_EOF 0x0040
#define IEEE80211_RADIOTAP_AMPDU_EOF_KNOWN 0x0080
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 39))
#define IEEE80211_RADIOTAP_MCS 19
/* For IEEE80211_RADIOTAP_MCS */
#define IEEE80211_RADIOTAP_MCS_HAVE_BW 0x01
#define IEEE80211_RADIOTAP_MCS_HAVE_MCS 0x02
#define IEEE80211_RADIOTAP_MCS_HAVE_GI 0x04
#define IEEE80211_RADIOTAP_MCS_HAVE_FMT 0x08
#define IEEE80211_RADIOTAP_MCS_HAVE_FEC 0x10
#define IEEE80211_RADIOTAP_MCS_BW_MASK 0x03
#define IEEE80211_RADIOTAP_MCS_BW_20 0
#define IEEE80211_RADIOTAP_MCS_BW_40 1
#define IEEE80211_RADIOTAP_MCS_BW_20L 2
#define IEEE80211_RADIOTAP_MCS_BW_20U 3
#define IEEE80211_RADIOTAP_MCS_SGI 0x04
#define IEEE80211_RADIOTAP_MCS_FMT_GF 0x08
#define IEEE80211_RADIOTAP_MCS_FEC_LDPC 0x10
#elif (LINUX_VERSION_CODE < KERNEL_VERSION(3, 11, 0))
#define IEEE80211_RADIOTAP_MCS_HAVE_STBC 0x20
#define IEEE80211_RADIOTAP_MCS_STBC_MASK 0x60
#define IEEE80211_RADIOTAP_MCS_STBC_1 1
#define IEEE80211_RADIOTAP_MCS_STBC_2 2
#define IEEE80211_RADIOTAP_MCS_STBC_3 3
#define IEEE80211_RADIOTAP_MCS_STBC_SHIFT 5
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 34))
#define IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE 29
#define IEEE80211_RADIOTAP_VENDOR_NAMESPACE 30
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 30))
#define IEEE80211_RADIOTAP_F_BADFCS 0x40
#endif
static inline void _rtw_radiotap_fill_flags(struct rx_pkt_attrib *a, u8 *flags)
{
struct moinfo *moif = (struct moinfo *)&a->moif;
if (0)
*flags |= IEEE80211_RADIOTAP_F_CFP;
if (0)
*flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
if ((a->encrypt == 1) || (a->encrypt == 5))
*flags |= IEEE80211_RADIOTAP_F_WEP;
if (a->mfrag)
*flags |= IEEE80211_RADIOTAP_F_FRAG;
if (1)
*flags |= IEEE80211_RADIOTAP_F_FCS;
if (0)
*flags |= IEEE80211_RADIOTAP_F_DATAPAD;
if (a->crc_err)
*flags |= IEEE80211_RADIOTAP_F_BADFCS;
/* Currently unspecified but used
for short guard interval (HT) */
if (moif->u.snif_info.sgi || a->sgi)
*flags |= 0x80;
}
sint rtw_fill_radiotap_hdr(_adapter *padapter, struct rx_pkt_attrib *a, u8 *buf)
{
#define RTAP_HDR_MAX 64
sint ret = _SUCCESS;
struct moinfo *moif = (struct moinfo *)&a->moif;
u8 rx_cnt = 0;
HAL_DATA_TYPE *pHalData = GET_HAL_DATA(padapter);
int i = 0;
u8 tmp_8bit = 0;
u16 tmp_16bit = 0;
u32 tmp_32bit = 0;
u64 tmp_64bit = 0;
_pkt *pskb = NULL;
struct ieee80211_radiotap_header *rtap_hdr = NULL;
u8 *ptr = NULL;
/*
radiotap length (include header 8)
11G length: 36 (0x0040002f)
11N length:
11AC length: 60 (0x0070002b)
*/
u8 hdr_buf[RTAP_HDR_MAX] = { 0 };
u16 rt_len = 8;
/* create header */
rtap_hdr = (struct ieee80211_radiotap_header *)&hdr_buf[0];
rtap_hdr->it_version = PKTHDR_RADIOTAP_VERSION;
/* each antenna information */
rx_cnt = rf_type_to_rf_rx_cnt(pHalData->rf_type);
#if 0
if (rx_cnt > 1) {
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE) |
BIT(IEEE80211_RADIOTAP_EXT);
for (i = 1; i < rx_cnt; i++) {
tmp_32bit = (BIT(IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
BIT(IEEE80211_RADIOTAP_LOCK_QUALITY) |
BIT(IEEE80211_RADIOTAP_ANTENNA) |
BIT(IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE) |
BIT(IEEE80211_RADIOTAP_EXT));
_rtw_memcpy(&hdr_buf[rt_len], &tmp_32bit, 4);
rt_len += 4;
}
tmp_32bit = (BIT(IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
BIT(IEEE80211_RADIOTAP_LOCK_QUALITY) |
BIT(IEEE80211_RADIOTAP_ANTENNA));
_rtw_memcpy(&hdr_buf[rt_len], &tmp_32bit, 4);
rt_len += 4;
}
#endif
/* tsft, Required Alignment: 8 bytes */
if (0) { //(a->free_cnt) {
/* TSFT + free_cnt */
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_TSFT);
if (!IS_ALIGNED(rt_len, 8))
rt_len = ((rt_len + 7) & 0xFFF8); /* Alignment */
tmp_64bit = cpu_to_le64(a->free_cnt);
_rtw_memcpy(&hdr_buf[rt_len], &tmp_64bit, 8);
rt_len += 8;
}
/* flags */
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_FLAGS);
_rtw_radiotap_fill_flags(a, &hdr_buf[rt_len]);
rt_len += 1;
/* rate */
if (a->data_rate <= DESC_RATE54M) {
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_RATE);
hdr_buf[rt_len] = hw_rate_to_m_rate(a->data_rate);
rt_len += 1;
}
/* channel & flags, Required Alignment: 2 bytes */
if (1) {
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_CHANNEL);
rt_len += (rt_len % 2); /* Alignment */
tmp_16bit = CHAN2FREQ(rtw_get_oper_ch(padapter));
_rtw_memcpy(&hdr_buf[rt_len], &tmp_16bit, 2);
rt_len += 2;
/* channel flags */
tmp_16bit = 0;
if (pHalData->current_band_type == 0)
tmp_16bit |= cpu_to_le16(IEEE80211_CHAN_2GHZ);
else
tmp_16bit |= cpu_to_le16(IEEE80211_CHAN_5GHZ);
if (a->data_rate <= DESC_RATE11M) {
/* CCK */
tmp_16bit |= cpu_to_le16(IEEE80211_CHAN_CCK);
} else {
/* OFDM */
tmp_16bit |= cpu_to_le16(IEEE80211_CHAN_OFDM);
}
if (rtw_get_oper_bw(padapter) == CHANNEL_WIDTH_10) {
/* 10Mhz Channel Width */
tmp_16bit |= cpu_to_le16(IEEE80211_CHAN_HALF);
}
if (rtw_get_oper_bw(padapter) == CHANNEL_WIDTH_5) {
/* 5Mhz Channel Width */
tmp_16bit |= cpu_to_le16(IEEE80211_CHAN_QUARTER);
}
_rtw_memcpy(&hdr_buf[rt_len], &tmp_16bit, 2);
rt_len += 2;
}
/* dBm Antenna Signal */
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_DBM_ANTSIGNAL);
hdr_buf[rt_len] = a->phy_info.recv_signal_power;
rt_len += 1;
#if 0
/* dBm Antenna Noise */
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_DBM_ANTNOISE);
hdr_buf[rt_len] = 0;
rt_len += 1;
#endif
#if 0
/* Signal Quality, Required Alignment: 2 bytes */
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_LOCK_QUALITY);
if (!IS_ALIGNED(rt_len, 2))
rt_len++;
hdr_buf[rt_len] = a->phy_info.signal_quality;
rt_len += 2;
#endif
#if 0
/* Antenna */
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_ANTENNA);
hdr_buf[rt_len] = 0; /* pHalData->rf_type; */
rt_len += 1;
#endif
#if 0
/* RX flags, Required Alignment: 2 bytes */
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_RX_FLAGS);
tmp_16bit = 0;
_rtw_memcpy(&hdr_buf[rt_len], &tmp_16bit, 2);
rt_len += 2;
#endif
/* MCS information, Required Alignment: 1 bytes */
if (a->data_rate >= DESC_RATEMCS0 && a->data_rate <= DESC_RATEMCS31) {
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_MCS);
/* Structure u8 known, u8 flags, u8 mcs */
/* known.bandwidth */
hdr_buf[rt_len] |= IEEE80211_RADIOTAP_MCS_HAVE_BW;
if (moif->u.snif_info.ofdm_bw)
hdr_buf[rt_len + 1] |= IEEE80211_RADIOTAP_MCS_BW_40;
if (a->bw == CHANNEL_WIDTH_40)
hdr_buf[rt_len + 1] |= IEEE80211_RADIOTAP_MCS_BW_40;
else
hdr_buf[rt_len + 1] |= IEEE80211_RADIOTAP_MCS_BW_20;
/* known.guard interval */
hdr_buf[rt_len] |= IEEE80211_RADIOTAP_MCS_HAVE_GI;
if (moif->u.snif_info.sgi) {
hdr_buf[rt_len + 1] |= IEEE80211_RADIOTAP_MCS_SGI;
} else {
hdr_buf[rt_len + 1] |= ((a->sgi & 0x01) << 2);
}
/* FEC Type */
hdr_buf[rt_len] |= IEEE80211_RADIOTAP_MCS_HAVE_FEC;
if (moif->u.snif_info.ldpc) {
hdr_buf[rt_len + 1] |= ((moif->u.snif_info.ldpc & 0x01) << 4);
} else {
hdr_buf[rt_len + 1] |= ((a->ldpc & 0x01) << 4);
}
/* STBC */
hdr_buf[rt_len] |= IEEE80211_RADIOTAP_MCS_HAVE_STBC;
if (moif->u.snif_info.stbc) {
hdr_buf[rt_len + 1] |= ((moif->u.snif_info.stbc & 0x03) << 5);
} else {
hdr_buf[rt_len + 1] |= ((a->stbc & 0x03) << 5);
}
/* known.MCS index */
hdr_buf[rt_len] |= IEEE80211_RADIOTAP_MCS_HAVE_MCS;
/* u8 mcs */
hdr_buf[rt_len + 2] = a->data_rate - DESC_RATEMCS0;
rt_len += 3;
}
/* AMPDU, Required Alignment: 4 bytes */
if (a->ampdu) {
static u32 ref_num = 0x10000000;
static u8 ppdu_cnt = 0;
/* Structure u32 reference number, u16 flags, u8 delimiter CRC value, u8 reserved */
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_AMPDU_STATUS);
if (!IS_ALIGNED(rt_len, 4))
rt_len = ((rt_len + 3) & 0xFFFC); /* Alignment */
/* u32 reference number */
if (a->ppdu_cnt != ppdu_cnt) {
ppdu_cnt = a->ppdu_cnt;
ref_num += 1;
}
tmp_32bit = cpu_to_le32(ref_num);
_rtw_memcpy(&hdr_buf[rt_len], &tmp_32bit, 4);
rt_len += 4;
/* u16 flags */
tmp_16bit = 0;
if (0) {
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN);
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN);
}
if (0) {
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_AMPDU_IS_LAST);
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN);
}
if (0) {
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR);
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN);
}
if (a->ampdu_eof) {
various minor updates
2023-02-09 15:11:23 +00:00
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 8, 0))
initial commit
2022-11-17 14:26:57 +00:00
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_AMPDU_EOF_KNOWN);
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_AMPDU_EOF);
various minor updates
2023-02-09 15:11:23 +00:00
#endif
initial commit
2022-11-17 14:26:57 +00:00
}
_rtw_memcpy(&hdr_buf[rt_len], &tmp_16bit, 2);
rt_len += 2;
/* u8 delimiter CRC value, u8 reserved */
rt_len += 2;
}
/* VHT, Required Alignment: 2 bytes */
if (a->data_rate >= DESC_RATEVHTSS1MCS0 && a->data_rate <= DESC_RATEVHTSS4MCS9) {
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_VHT);
rt_len += (rt_len % 2); /* Alignment */
/* Structure
u16 known, u8 flags, u8 bandwidth, u8 mcs_nss[4],
u8 coding, u8 group_id, u16 partial_aid */
tmp_16bit = 0;
/* STBC */
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_VHT_KNOWN_STBC);
if (moif->u.snif_info.stbc) {
hdr_buf[rt_len + 2] |= IEEE80211_RADIOTAP_VHT_FLAG_STBC;
} else {
hdr_buf[rt_len + 2] |= (a->stbc & 0x01);
}
/* TXOP_PS_NOT_ALLOWED */
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_VHT_KNOWN_TXOP_PS_NA);
if (moif->u.snif_info.vht_txop_not_allow) {
hdr_buf[rt_len + 2] |= IEEE80211_RADIOTAP_VHT_FLAG_TXOP_PS_NA;
}
/* Guard interval */
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_VHT_KNOWN_GI);
if (moif->u.snif_info.sgi) {
hdr_buf[rt_len + 2] |= IEEE80211_RADIOTAP_VHT_FLAG_SGI;
} else {
hdr_buf[rt_len + 2] |= ((a->sgi & 0x01) << 2);
}
/* Short GI NSYM */
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_VHT_KNOWN_SGI_NSYM_DIS);
if (moif->u.snif_info.vht_nsym_dis) {
hdr_buf[rt_len + 2] |= IEEE80211_RADIOTAP_VHT_FLAG_SGI_NSYM_M10_9;
}
/* LDPC extra OFDM symbol */
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_VHT_KNOWN_LDPC_EXTRA_OFDM_SYM);
if (moif->u.snif_info.vht_ldpc_extra) {
hdr_buf[rt_len + 2] |= IEEE80211_RADIOTAP_VHT_FLAG_LDPC_EXTRA_OFDM_SYM;
} else {
hdr_buf[rt_len + 2] |= ((a->ldpc & 0x01) << 4);
}
/* Short GI NSYM */
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED);
if (moif->u.snif_info.vht_beamformed) {
hdr_buf[rt_len + 2] |= IEEE80211_RADIOTAP_VHT_FLAG_BEAMFORMED;
}
/* know.Bandwidth */
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH);
/* Group ID */
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_VHT_KNOWN_GROUP_ID);
/* Partial AID */
tmp_16bit |= cpu_to_le16(IEEE80211_RADIOTAP_VHT_KNOWN_PARTIAL_AID);
_rtw_memcpy(&hdr_buf[rt_len], &tmp_16bit, 2);
rt_len += 3;
/* u8 bandwidth */
if (moif->u.snif_info.ofdm_bw)
tmp_8bit = moif->u.snif_info.ofdm_bw;
else
tmp_8bit = a->bw;
switch (tmp_8bit) {
case CHANNEL_WIDTH_20:
hdr_buf[rt_len] |= 0;
break;
case CHANNEL_WIDTH_40:
hdr_buf[rt_len] |= 1;
break;
case CHANNEL_WIDTH_80:
hdr_buf[rt_len] |= 4;
break;
case CHANNEL_WIDTH_160:
hdr_buf[rt_len] |= 11;
break;
default:
hdr_buf[rt_len] |= 0;
}
rt_len += 1;
/* u8 mcs_nss[4] */
if ((DESC_RATEVHTSS1MCS0 <= a->data_rate) &&
(a->data_rate <= DESC_RATEVHTSS4MCS9)) {
/* User 0 */
/* MCS */
hdr_buf[rt_len] = ((a->data_rate - DESC_RATEVHTSS1MCS0) % 10) << 4;
/* NSS */
hdr_buf[rt_len] |= (((a->data_rate - DESC_RATEVHTSS1MCS0) / 10) + 1);
}
rt_len += 4;
/* u8 coding, phystat? */
hdr_buf[rt_len] = 0;
rt_len += 1;
/* u8 group_id */
hdr_buf[rt_len] = moif->u.snif_info.vht_group_id;
rt_len += 1;
/* u16 partial_aid */
tmp_16bit = cpu_to_le16(moif->u.snif_info.vht_nsts_aid);
_rtw_memcpy(&hdr_buf[rt_len], &tmp_16bit, 2);
rt_len += 2;
}
/* frame timestamp, Required Alignment: 8 bytes */
if (0) { //(a->free_cnt) {
rtap_hdr->it_present |= BIT(IEEE80211_RADIOTAP_TIMESTAMP);
if (!IS_ALIGNED(rt_len, 8))
rt_len = ((rt_len + 7) & 0xFFF8); /* Alignment */
/* u64 timestamp */
tmp_64bit = cpu_to_le64(a->free_cnt);
_rtw_memcpy(&hdr_buf[rt_len], &tmp_64bit, 8);
rt_len += 8;
/* u16 accuracy */
tmp_16bit = cpu_to_le16(22);
_rtw_memcpy(&hdr_buf[rt_len], &tmp_16bit, 2);
rt_len += 2;
/* u8 unit/position */
hdr_buf[rt_len] |= IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US;
rt_len += 1;
/* u8 flags */
hdr_buf[rt_len] |= IEEE80211_RADIOTAP_TIMESTAMP_FLAG_32BIT;
hdr_buf[rt_len] |= IEEE80211_RADIOTAP_TIMESTAMP_FLAG_ACCURACY;
rt_len += 1;
}
/* each antenna information */
#if 0
if (rx_cnt > 1) {
for (i = 0; i <= rx_cnt; i++) {
/* dBm Antenna Signal */
hdr_buf[rt_len] = a->phy_info.rx_mimo_signal_strength[i];
rt_len += 1;
/* Signal Quality */
if (!IS_ALIGNED(rt_len, 2))
rt_len++;
hdr_buf[rt_len] = cpu_to_le16(a->phy_info.rx_mimo_signal_quality[i]);
rt_len += 2;
/* Antenna */
hdr_buf[rt_len] = i; /* pHalData->rf_type; */
rt_len += 1;
}
}
#endif
/* push to skb */
pskb = (_pkt *)buf;
if (skb_headroom(pskb) < rt_len) {
RTW_INFO("%s:%d %s headroom is too small.\n", __FILE__, __LINE__, __func__);
ret = _FAIL;
return ret;
}
ptr = skb_push(pskb, rt_len);
if (ptr) {
rtap_hdr->it_len = cpu_to_le16(rt_len);
rtap_hdr->it_present = cpu_to_le32(rtap_hdr->it_present);
memcpy(ptr, rtap_hdr, rt_len);
} else
ret = _FAIL;
return ret;
}
void rx_query_moinfo(struct rx_pkt_attrib *a, u8 *desc)
{
switch (a->drvinfo_sz) {
case 40:
_rtw_memcpy(a->moif, &desc[32], 8);
break;
case 48:
_rtw_memcpy(a->moif, &desc[32], 12);
break;
case 32:
/* passthrough */
default:
break;
}
}
#endif /* CONFIG_WIFI_MONITOR */
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