Google Git
Sign in
nest-open-source / manifest_repos / dhd-driver / refs/heads/main / . / bcmdhd.101.10.361.x / bcmwifi_monitor.c
blob: 1b606eb6eff47d6a6b9f77c00503b75ea4d65f37 [file] [log] [blame]
/*
* Monitor Mode routines.
* This header file housing the Monitor Mode routines implementation.
*
* Broadcom Proprietary and Confidential. Copyright (C) 2020,
* All Rights Reserved.
*
* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Broadcom;
* the contents of this file may not be disclosed to third parties,
* copied or duplicated in any form, in whole or in part, without
* the prior written permission of Broadcom.
*
*
* <<Broadcom-WL-IPTag/Proprietary:>>
*/
#include <bcmutils.h>
#include <bcmendian.h>
#include <hndd11.h>
#include <bcmwifi_channels.h>
#include <bcmwifi_radiotap.h>
#include <bcmwifi_monitor.h>
#include <bcmwifi_rates.h>
#include <monitor.h>
#include <d11_cfg.h>
struct monitor_info {
ratespec_t ampdu_rspec; /* spec value for AMPDU sniffing */
uint16 ampdu_counter;
uint16 amsdu_len;
uint8* amsdu_pkt;
int8 headroom;
d11_info_t *d11_info;
uint8 ampdu_plcp[D11_PHY_HDR_LEN];
};
struct he_ltf_gi_info {
uint8 gi;
uint8 ltf_size;
uint8 num_ltf;
};
struct he_mu_ltf_mp_info {
uint8 num_ltf;
uint8 mid_per;
};
/*
* su ppdu - mapping of ltf and gi values from plcp to rtap data format
* https://www.radiotap.org/fields/HE.html
*/
static const struct he_ltf_gi_info he_plcp2ltf_gi[4] = {
{3, 0, 7}, /* reserved, reserved, reserved */
{0, 2, 1}, /* 0.8us, 2x, 2x */
{1, 2, 1}, /* 1.6us, 2x, 2x */
{2, 3, 2} /* 3.2us, 4x, 4x */
};
/*
* mu ppdu - mapping of ru type value from phy rxstatus to rtap data format
* https://www.radiotap.org/fields/HE.html
*/
static const uint8 he_mu_phyrxs2ru_type[7] = {
4, /* 26-tone RU */
5, /* 52-tone RU */
6, /* 106-tone RU */
7, /* 242-tone RU */
8, /* 484-tone RU */
9, /* 996-tone RU */
10 /* 2x996-tone RU */
};
/*
* mu ppdu - doppler:1, mapping of ltf and midamble periodicity values from plcp to rtap data format
* https://www.radiotap.org/fields/HE.html
*/
static const struct he_mu_ltf_mp_info he_mu_plcp2ltf_mp[8] = {
{0, 0}, /* 1x, 10 */
{1, 0}, /* 2x, 10 */
{2, 0}, /* 4x, 10 */
{7, 0}, /* reserved, reserved */
{0, 1}, /* 1x, 20 */
{1, 1}, /* 2x, 20 */
{2, 1}, /* 4x, 20 */
{7, 0} /* reserved, reserved */
};
/*
* mu ppdu - doppler:0, mapping of ltf value from plcp to rtap data format
* https://www.radiotap.org/fields/HE.html
*/
static const uint8 he_mu_plcp2ltf[8] = {
0, /* 1x */
1, /* 2x */
2, /* 4x */
3, /* 6x */
4, /* 8x */
7, /* reserved */
7, /* reserved */
7 /* reserved */
};
/** Calculate the rate of a received frame and return it as a ratespec (monitor mode) */
static ratespec_t
BCMFASTPATH(wlc_recv_mon_compute_rspec)(monitor_info_t* info, wlc_d11rxhdr_t *wrxh, uint8 *plcp)
{
d11rxhdr_t *rxh = &wrxh->rxhdr;
ratespec_t rspec = 0;
uint16 phy_ft;
uint corerev = info->d11_info->major_revid;
uint corerev_minor = info->d11_info->minor_revid;
BCM_REFERENCE(corerev_minor);
phy_ft = D11PPDU_FT(rxh, corerev);
switch (phy_ft) {
case FT_CCK:
rspec = CCK_RSPEC(CCK_PHY2MAC_RATE(((cck_phy_hdr_t *)plcp)->signal));
rspec |= WL_RSPEC_BW_20MHZ;
break;
case FT_OFDM:
rspec = OFDM_RSPEC(OFDM_PHY2MAC_RATE(((ofdm_phy_hdr_t *)plcp)->rlpt[0]));
rspec |= WL_RSPEC_BW_20MHZ;
break;
case FT_HT: {
uint ht_sig1, ht_sig2;
uint8 stbc;
ht_sig1 = plcp[0]; /* only interested in low 8 bits */
ht_sig2 = plcp[3] | (plcp[4] << 8); /* only interested in low 10 bits */
rspec = HT_RSPEC((ht_sig1 & HT_SIG1_MCS_MASK));
if (ht_sig1 & HT_SIG1_CBW) {
/* indicate rspec is for 40 MHz mode */
rspec |= WL_RSPEC_BW_40MHZ;
} else {
/* indicate rspec is for 20 MHz mode */
rspec |= WL_RSPEC_BW_20MHZ;
}
if (ht_sig2 & HT_SIG2_SHORT_GI)
rspec |= WL_RSPEC_SGI;
if (ht_sig2 & HT_SIG2_FEC_CODING)
rspec |= WL_RSPEC_LDPC;
stbc = ((ht_sig2 & HT_SIG2_STBC_MASK) >> HT_SIG2_STBC_SHIFT);
if (stbc != 0) {
rspec |= WL_RSPEC_STBC;
}
break;
}
case FT_VHT:
rspec = wf_vht_plcp_to_rspec(plcp);
break;
#ifdef WL11AX
case FT_HE:
rspec = wf_he_plcp_to_rspec(plcp);
break;
#endif /* WL11AX */
#ifdef WL11BE
case FT_EHT:
rspec = wf_eht_plcp_to_rspec(plcp);
break;
#endif
default:
/* return a valid rspec if not a debug/assert build */
rspec = OFDM_RSPEC(6) | WL_RSPEC_BW_20MHZ;
break;
}
return rspec;
} /* wlc_recv_compute_rspec */
static void
wlc_he_su_fill_rtap_data(struct wl_rxsts *sts, uint8 *plcp)
{
ASSERT(plcp);
/* he ppdu format */
sts->data1 |= WL_RXS_HEF_SIGA_PPDU_SU;
/* bss color */
sts->data1 |= WL_RXS_HEF_SIGA_BSS_COLOR;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, BSS_COLOR);
/* beam change */
sts->data1 |= WL_RXS_HEF_SIGA_BEAM_CHANGE;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, BEAM_CHANGE);
/* ul/dl */
sts->data1 |= WL_RXS_HEF_SIGA_DL_UL;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, DL_UL);
/* data mcs */
sts->data1 |= WL_RXS_HEF_SIGA_MCS;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, MCS);
/* data dcm */
sts->data1 |= WL_RXS_HEF_SIGA_DCM;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, DCM);
/* coding */
sts->data1 |= WL_RXS_HEF_SIGA_CODING;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, CODING);
/* ldpc extra symbol segment */
sts->data1 |= WL_RXS_HEF_SIGA_LDPC;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, LDPC);
/* stbc */
sts->data1 |= WL_RXS_HEF_SIGA_STBC;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, STBC);
/* spatial reuse */
sts->data1 |= WL_RXS_HEF_SIGA_SPATIAL_REUSE;
sts->data4 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, SR);
/* data bw */
sts->data1 |= WL_RXS_HEF_SIGA_BW;
sts->data5 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, BW);
/* gi */
sts->data2 |= WL_RXS_HEF_SIGA_GI;
sts->data5 |= HE_PACK_RTAP_GI_LTF_FROM_PLCP(plcp, SU, GI, gi);
/* ltf symbol size */
sts->data2 |= WL_RXS_HEF_SIGA_LTF_SIZE;
sts->data5 |= HE_PACK_RTAP_GI_LTF_FROM_PLCP(plcp, SU, LTF_SIZE, ltf_size);
/* number of ltf symbols */
sts->data2 |= WL_RXS_HEF_SIGA_NUM_LTF;
sts->data5 |= HE_PACK_RTAP_GI_LTF_FROM_PLCP(plcp, SU, NUM_LTF, num_ltf);
/* pre-fec padding factor */
sts->data2 |= WL_RXS_HEF_SIGA_PADDING;
sts->data5 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, PADDING);
/* txbf */
sts->data2 |= WL_RXS_HEF_SIGA_TXBF;
sts->data5 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, TXBF);
/* pe disambiguity */
sts->data2 |= WL_RXS_HEF_SIGA_PE;
sts->data5 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, PE);
/*
* if doppler (bit:41) is set in plcp to 1 then,
* - bit:25 indicates 'midamble periodicity'
* - bit:23-24 indicate 'nsts'
*
* if doppler (bit:41) is set to 0 then,
* - bit:23-25 indicate 'nsts'
*/
if (HE_EXTRACT_FROM_PLCP(plcp, SU, DOPPLER)) {
/* doppler */
sts->data1 |= WL_RXS_HEF_SIGA_DOPPLER;
sts->data6 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, DOPPLER);
/* midamble periodicity */
sts->data2 |= WL_RXS_HEF_SIGA_MIDAMBLE;
sts->data6 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, MIDAMBLE);
/* nsts */
sts->data6 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, DOPPLER_SET_NSTS);
} else {
/* nsts */
sts->data6 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, DOPPLER_NOTSET_NSTS);
}
/* txop */
sts->data2 |= WL_RXS_HEF_SIGA_TXOP;
sts->data6 |= HE_PACK_RTAP_FROM_PLCP(plcp, SU, TXOP);
}
static void
wlc_he_dl_ofdma_fill_rtap_data(struct wl_rxsts *sts, d11rxhdr_t *rxh,
uint8 *plcp, uint32 corerev, uint32 corerev_minor)
{
uint8 doppler, midamble, val;
ASSERT(rxh);
ASSERT(plcp);
/* he ppdu format */
sts->data1 |= WL_RXS_HEF_SIGA_PPDU_MU;
/* bss color */
sts->data1 |= WL_RXS_HEF_SIGA_BSS_COLOR;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, BSS_COLOR);
/* beam change (doesn't apply to mu ppdu) */
sts->data1 &= ~WL_RXS_HEF_SIGA_BEAM_CHANGE;
/* ul/dl */
sts->data1 |= WL_RXS_HEF_SIGA_DL_UL;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, DL_UL);
/* data mcs */
sts->data1 |= WL_RXS_HEF_SIGA_MCS;
sts->data3 |= HE_PACK_RTAP_FROM_PRXS(rxh, corerev, corerev_minor, MCS);
/* data dcm */
sts->data1 |= WL_RXS_HEF_SIGA_DCM;
sts->data3 |= HE_PACK_RTAP_FROM_PRXS(rxh, corerev, corerev_minor, DCM);
/* coding */
sts->data1 |= WL_RXS_HEF_SIGA_CODING;
sts->data3 |= HE_PACK_RTAP_FROM_PRXS(rxh, corerev, corerev_minor, CODING);
/* ldpc extra symbol segment */
sts->data1 |= WL_RXS_HEF_SIGA_LDPC;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, LDPC);
/* stbc */
sts->data1 |= WL_RXS_HEF_SIGA_STBC;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, STBC);
/* spatial reuse */
sts->data1 |= WL_RXS_HEF_SIGA_SPATIAL_REUSE;
sts->data4 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, SR);
/* sta-id */
sts->data1 |= WL_RXS_HEF_SIGA_STA_ID;
sts->data4 |= HE_PACK_RTAP_FROM_PRXS(rxh, corerev, corerev_minor, STAID);
/* ru allocation */
val = he_mu_phyrxs2ru_type[D11PPDU_RU_TYPE(rxh, corerev, corerev_minor)];
sts->data1 |= WL_RXS_HEF_SIGA_RU_ALLOC;
sts->data5 |= HE_PACK_RTAP_FROM_VAL(val, RU_ALLOC);
/* doppler */
sts->data1 |= WL_RXS_HEF_SIGA_DOPPLER;
sts->data6 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, DOPPLER);
doppler = HE_EXTRACT_FROM_PLCP(plcp, MU, DOPPLER);
midamble = HE_EXTRACT_FROM_PLCP(plcp, MU, MIDAMBLE);
if (doppler) {
/* number of ltf symbols */
val = he_mu_plcp2ltf_mp[midamble].num_ltf;
sts->data2 |= WL_RXS_HEF_SIGA_NUM_LTF;
sts->data5 |= HE_PACK_RTAP_FROM_VAL(val, NUM_LTF);
/* midamble periodicity */
val = he_mu_plcp2ltf_mp[midamble].mid_per;
sts->data2 |= WL_RXS_HEF_SIGA_MIDAMBLE;
sts->data6 |= HE_PACK_RTAP_FROM_VAL(val, MIDAMBLE);
} else {
/* number of ltf symbols */
val = he_mu_plcp2ltf[midamble];
sts->data2 |= WL_RXS_HEF_SIGA_NUM_LTF;
sts->data5 |= HE_PACK_RTAP_FROM_VAL(val, NUM_LTF);
}
/* nsts */
sts->data6 |= HE_PACK_RTAP_FROM_PRXS(rxh, corerev, corerev_minor, NSTS);
/* gi */
sts->data2 |= WL_RXS_HEF_SIGA_GI;
sts->data5 |= HE_PACK_RTAP_GI_LTF_FROM_PLCP(plcp, MU, GI, gi);
/* ltf symbol size */
sts->data2 |= WL_RXS_HEF_SIGA_LTF_SIZE;
sts->data5 |= HE_PACK_RTAP_GI_LTF_FROM_PLCP(plcp, MU, LTF_SIZE, ltf_size);
/* pre-fec padding factor */
sts->data2 |= WL_RXS_HEF_SIGA_PADDING;
sts->data5 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, PADDING);
/* txbf */
sts->data2 |= WL_RXS_HEF_SIGA_TXBF;
sts->data5 |= HE_PACK_RTAP_FROM_PRXS(rxh, corerev, corerev_minor, TXBF);
/* pe disambiguity */
sts->data2 |= WL_RXS_HEF_SIGA_PE;
sts->data5 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, PE);
/* txop */
sts->data2 |= WL_RXS_HEF_SIGA_TXOP;
sts->data6 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, TXOP);
}
static void
wlc_he_dl_ofdma_fill_rtap_flag(struct wl_rxsts *sts, uint8 *plcp, uint32 corerev)
{
ASSERT(plcp);
/* sig-b mcs */
sts->flag1 |= WL_RXS_HEF_SIGB_MCS_KNOWN;
sts->flag1 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, SIGB_MCS);
/* sig-b dcm */
sts->flag1 |= WL_RXS_HEF_SIGB_DCM_KNOWN;
sts->flag1 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, SIGB_DCM);
/* sig-b compression */
sts->flag1 |= WL_RXS_HEF_SIGB_COMP_KNOWN;
sts->flag2 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, SIGB_COMP);
/* # of he-sig-b symbols/mu-mimo users */
sts->flag1 |= WL_RXS_HEF_NUM_SIGB_SYMB_KNOWN;
sts->flag2 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, SIGB_SYM_MU_MIMO_USER);
/* bandwidth from bandwidth field in he-sig-a */
sts->flag2 |= WL_RXS_HEF_BW_SIGA_KNOWN;
sts->flag2 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, BW_SIGA);
/* preamble puncturing from bandwidth field in he-sig-a */
sts->flag2 |= WL_RXS_HEF_PREPUNCR_SIGA_KNOWN;
sts->flag2 |= HE_PACK_RTAP_FROM_PLCP(plcp, MU, PRE_PUNCR_SIGA);
}
static void
wlc_he_ul_ofdma_fill_rtap_data(struct wl_rxsts *sts, d11rxhdr_t *rxh, uint8 *plcp,
uint32 corerev)
{
ASSERT(rxh);
ASSERT(plcp);
BCM_REFERENCE(rxh);
/* he ppdu format */
sts->data1 |= WL_RXS_HEF_SIGA_PPDU_TRIG;
/* bss color */
sts->data1 |= WL_RXS_HEF_SIGA_BSS_COLOR;
sts->data3 |= HE_PACK_RTAP_FROM_PLCP(plcp, TRIG, BSS_COLOR);
/* beam change (doesn't apply to mu ppdu) */
sts->data1 &= ~WL_RXS_HEF_SIGA_BEAM_CHANGE;
/* ul/dl */
sts->data1 |= WL_RXS_HEF_SIGA_DL_UL;
sts->data3 |= HE_PACK_RTAP_FROM_VAL(1, DL_UL);
/* txop */
sts->data2 |= WL_RXS_HEF_SIGA_TXOP;
sts->data6 |= HE_PACK_RTAP_FROM_PLCP(plcp, TRIG, TXOP);
}
/* recover 32bit TSF value from the 16bit TSF value */
/* assumption is time in rxh is within 65ms of the current tsf */
/* local TSF inserted in the rxh is at RxStart which is before 802.11 header */
static uint32
wlc_recover_tsf32(uint16 rxh_tsf, uint32 ts_tsf)
{
uint16 rfdly;
/* adjust rx dly added in RxTSFTime */
/* comment in d11.h:
* BWL_PRE_PACKED_STRUCT struct d11rxhdr {
* ...
* uint16 RxTSFTime; RxTSFTime time of first MAC symbol + M_PHY_PLCPRX_DLY
* ...
* }
*/
/* TODO: add PHY type specific value here... */
rfdly = M_BPHY_PLCPRX_DLY;
rxh_tsf -= rfdly;
return (((ts_tsf - rxh_tsf) & 0xFFFF0000) | rxh_tsf);
}
static uint8
wlc_vht_get_gid(uint8 *plcp)
{
uint32 plcp0 = plcp[0] | (plcp[1] << 8);
return (plcp0 & VHT_SIGA1_GID_MASK) >> VHT_SIGA1_GID_SHIFT;
}
static uint16
wlc_vht_get_aid(uint8 *plcp)
{
uint32 plcp0 = plcp[0] | (plcp[1] << 8) | (plcp[2] << 16);
return (plcp0 & VHT_SIGA1_PARTIAL_AID_MASK) >> VHT_SIGA1_PARTIAL_AID_SHIFT;
}
static bool
wlc_vht_get_txop_ps_not_allowed(uint8 *plcp)
{
return !!(plcp[2] & (VHT_SIGA1_TXOP_PS_NOT_ALLOWED >> 16));
}
static bool
wlc_vht_get_sgi_nsym_da(uint8 *plcp)
{
return !!(plcp[3] & VHT_SIGA2_GI_W_MOD10);
}
static bool
wlc_vht_get_ldpc_extra_symbol(uint8 *plcp)
{
return !!(plcp[3] & VHT_SIGA2_LDPC_EXTRA_OFDM_SYM);
}
static bool
wlc_vht_get_beamformed(uint8 *plcp)
{
return !!(plcp[4] & (VHT_SIGA2_BEAMFORM_ENABLE >> 8));
}
/* Convert htflags and mcs values to
* rate in units of 500kbps
*/
static uint16
wlc_ht_phy_get_rate(uint8 htflags, uint8 mcs)
{
ratespec_t rspec = HT_RSPEC(mcs);
if (htflags & WL_RXS_HTF_40)
rspec |= WL_RSPEC_BW_40MHZ;
if (htflags & WL_RXS_HTF_SGI)
rspec |= WL_RSPEC_SGI;
return RSPEC2KBPS(rspec)/500;
}
static void
bcmwifi_update_rxpwr_per_ant(monitor_pkt_rxsts_t *pkt_rxsts, wlc_d11rxhdr_t *wrxh)
{
int i = 0;
wlc_d11rxhdr_ext_t *wrxh_ext = (wlc_d11rxhdr_ext_t *)((uint8 *)wrxh - WLC_SWRXHDR_EXT_LEN);
BCM_REFERENCE(wrxh_ext);
pkt_rxsts->corenum = 0;
for (i = 0; i < WL_RSSI_ANT_MAX; i++) {
#ifdef BCM_MON_QDBM_RSSI
pkt_rxsts->rxpwr[i].dBm = wrxh_ext->rxpwr[i].dBm;
pkt_rxsts->rxpwr[i].decidBm = wrxh_ext->rxpwr[i].decidBm;
#else
pkt_rxsts->rxpwr[i].dBm = wrxh->rxpwr[i];
pkt_rxsts->rxpwr[i].decidBm = 0;
#endif
if (pkt_rxsts->rxpwr[i].dBm == 0) {
break;
}
pkt_rxsts->corenum ++;
}
}
static void
bcmwifi_parse_ampdu(monitor_info_t *info, d11rxhdr_t *rxh, uint16 subtype, ratespec_t rspec,
uint8 *plcp, struct wl_rxsts *sts)
{
uint32 corerev = info->d11_info->major_revid;
uint32 corerev_minor = info->d11_info->minor_revid;
uint32 ft = D11PPDU_FT(rxh, corerev);
uint8 plcp_len = D11_PHY_RXPLCP_LEN(corerev);
BCM_REFERENCE(corerev_minor);
if ((subtype == FC_SUBTYPE_QOS_DATA) || (subtype == FC_SUBTYPE_QOS_NULL)) {
/* A-MPDU parsing */
switch (ft) {
case FT_HT:
if (WLC_IS_MIMO_PLCP_AMPDU(plcp)) {
sts->nfrmtype |= WL_RXS_NFRM_AMPDU_FIRST;
/* Save the rspec & plcp for later */
info->ampdu_rspec = rspec;
/* src & dst len are same */
(void)memcpy_s(info->ampdu_plcp, plcp_len, plcp, plcp_len);
} else if (!PLCP_VALID(plcp)) {
sts->nfrmtype |= WL_RXS_NFRM_AMPDU_SUB;
/* Use the saved rspec & plcp */
rspec = info->ampdu_rspec;
/* src & dst len are same */
(void)memcpy_s(plcp, plcp_len, info->ampdu_plcp, plcp_len);
}
break;
case FT_VHT:
case FT_HE:
case FT_EHT:
if (PLCP_VALID(plcp) &&
!IS_PHYRXHDR_VALID(rxh, corerev, corerev_minor)) {
/* First MPDU:
* PLCP header is valid, Phy RxStatus is not valid
*/
sts->nfrmtype |= WL_RXS_NFRM_AMPDU_FIRST;
/* Save the rspec & plcp for later */
info->ampdu_rspec = rspec;
/* src & dst len are same */
(void)memcpy_s(info->ampdu_plcp, plcp_len, plcp, plcp_len);
info->ampdu_counter++;
} else if (!PLCP_VALID(plcp) &&
!IS_PHYRXHDR_VALID(rxh, corerev, corerev_minor)) {
/* Sub MPDU: * PLCP header is not valid,
* Phy RxStatus is not valid
*/
sts->nfrmtype |= WL_RXS_NFRM_AMPDU_SUB;
/* Use the saved rspec & plcp */
rspec = info->ampdu_rspec;
/* src & dst len are same */
(void)memcpy_s(plcp, plcp_len, info->ampdu_plcp, plcp_len);
} else if (PLCP_VALID(plcp) &&
IS_PHYRXHDR_VALID(rxh, corerev, corerev_minor)) {
/* MPDU is not a part of A-MPDU:
* PLCP header is valid and Phy RxStatus is valid
*/
info->ampdu_counter++;
} else {
/* Last MPDU */
/* done to take care of the last MPDU in A-mpdu
* VHT packets are considered A-mpdu
* Use the saved rspec
*/
rspec = info->ampdu_rspec;
/* src & dst len are same */
(void)memcpy_s(plcp, plcp_len, info->ampdu_plcp, plcp_len);
}
sts->ampdu_counter = info->ampdu_counter;
break;
case FT_OFDM:
break;
default:
printf("invalid frame type: %d\n", ft);
break;
}
}
}
static void
bcmwifi_update_rate_modulation_info(monitor_info_t *info, d11rxhdr_t *rxh, d11rxhdr_t *rxh_last,
ratespec_t rspec, uint8* plcp, struct wl_rxsts *sts)
{
uint32 corerev = info->d11_info->major_revid;
uint32 corerev_minor = info->d11_info->minor_revid;
/* prepare rate/modulation info */
if (RSPEC_ISVHT(rspec)) {
uint32 bw = RSPEC_BW(rspec);
/* prepare VHT rate/modulation info */
sts->nss = (rspec & WL_RSPEC_VHT_NSS_MASK) >> WL_RSPEC_VHT_NSS_SHIFT;
sts->mcs = (rspec & WL_RSPEC_VHT_MCS_MASK);
if (CHSPEC_IS80(sts->chanspec)) {
if (bw == WL_RSPEC_BW_20MHZ) {
switch (CHSPEC_CTL_SB(sts->chanspec)) {
default:
case WL_CHANSPEC_CTL_SB_LL:
sts->bw = WL_RXS_VHT_BW_20LL;
break;
case WL_CHANSPEC_CTL_SB_LU:
sts->bw = WL_RXS_VHT_BW_20LU;
break;
case WL_CHANSPEC_CTL_SB_UL:
sts->bw = WL_RXS_VHT_BW_20UL;
break;
case WL_CHANSPEC_CTL_SB_UU:
sts->bw = WL_RXS_VHT_BW_20UU;
break;
}
} else if (bw == WL_RSPEC_BW_40MHZ) {
switch (CHSPEC_CTL_SB(sts->chanspec)) {
default:
case WL_CHANSPEC_CTL_SB_L:
sts->bw = WL_RXS_VHT_BW_40L;
break;
case WL_CHANSPEC_CTL_SB_U:
sts->bw = WL_RXS_VHT_BW_40U;
break;
}
} else {
sts->bw = WL_RXS_VHT_BW_80;
}
} else if (CHSPEC_IS40(sts->chanspec)) {
if (bw == WL_RSPEC_BW_20MHZ) {
switch (CHSPEC_CTL_SB(sts->chanspec)) {
default:
case WL_CHANSPEC_CTL_SB_L:
sts->bw = WL_RXS_VHT_BW_20L;
break;
case WL_CHANSPEC_CTL_SB_U:
sts->bw = WL_RXS_VHT_BW_20U;
break;
}
} else if (bw == WL_RSPEC_BW_40MHZ) {
sts->bw = WL_RXS_VHT_BW_40;
}
} else {
sts->bw = WL_RXS_VHT_BW_20;
}
if (RSPEC_ISSTBC(rspec))
sts->vhtflags |= WL_RXS_VHTF_STBC;
if (wlc_vht_get_txop_ps_not_allowed(plcp))
sts->vhtflags |= WL_RXS_VHTF_TXOP_PS;
if (RSPEC_ISSGI(rspec)) {
sts->vhtflags |= WL_RXS_VHTF_SGI;
if (wlc_vht_get_sgi_nsym_da(plcp))
sts->vhtflags |= WL_RXS_VHTF_SGI_NSYM_DA;
}
if (RSPEC_ISLDPC(rspec)) {
sts->coding = WL_RXS_VHTF_CODING_LDCP;
if (wlc_vht_get_ldpc_extra_symbol(plcp)) {
/* need to un-set for MU-MIMO */
sts->vhtflags |= WL_RXS_VHTF_LDPC_EXTRA;
}
}
if (wlc_vht_get_beamformed(plcp))
sts->vhtflags |= WL_RXS_VHTF_BF;
sts->gid = wlc_vht_get_gid(plcp);
sts->aid = wlc_vht_get_aid(plcp);
sts->datarate = RSPEC2KBPS(rspec)/500;
} else if (RSPEC_ISHT(rspec)) {
/* prepare HT rate/modulation info */
sts->mcs = (rspec & WL_RSPEC_HT_MCS_MASK);
if (CHSPEC_IS40(sts->chanspec) || CHSPEC_IS80(sts->chanspec)) {
uint32 bw = RSPEC_BW(rspec);
if (bw == WL_RSPEC_BW_20MHZ) {
if (CHSPEC_CTL_SB(sts->chanspec) == WL_CHANSPEC_CTL_SB_L) {
sts->htflags = WL_RXS_HTF_20L;
} else {
sts->htflags = WL_RXS_HTF_20U;
}
} else if (bw == WL_RSPEC_BW_40MHZ) {
sts->htflags = WL_RXS_HTF_40;
}
}
if (RSPEC_ISSGI(rspec))
sts->htflags |= WL_RXS_HTF_SGI;
if (RSPEC_ISLDPC(rspec))
sts->htflags |= WL_RXS_HTF_LDPC;
if (RSPEC_ISSTBC(rspec))
sts->htflags |= (1 << WL_RXS_HTF_STBC_SHIFT);
sts->datarate = wlc_ht_phy_get_rate(sts->htflags, sts->mcs);
} else if (FALSE ||
#ifdef WL11BE
RSPEC_ISHEEXT(rspec) ||
#else
RSPEC_ISHE(rspec) ||
#endif
FALSE) {
sts->nss = (rspec & WL_RSPEC_NSS_MASK) >> WL_RSPEC_NSS_SHIFT;
sts->mcs = (rspec & WL_RSPEC_MCS_MASK);
if (D11PPDU_ISMU_REV80(rxh_last, corerev, corerev_minor)) {
if (IS_PHYRXHDR_VALID(rxh_last, corerev, corerev_minor)) {
uint16 ff_type = D11PPDU_FF_TYPE(rxh_last,
corerev, corerev_minor);
switch (ff_type) {
case HE_MU_PPDU:
wlc_he_dl_ofdma_fill_rtap_data(sts, rxh_last,
plcp, corerev, corerev_minor);
wlc_he_dl_ofdma_fill_rtap_flag(sts, plcp, corerev);
break;
case HE_TRIG_PPDU:
wlc_he_ul_ofdma_fill_rtap_data(sts, rxh_last,
plcp, corerev);
break;
default:
/* should not have come here */
ASSERT(0);
break;
}
}
} else {
/* frame format is either SU or SU_RE (assumption only SU is supported) */
wlc_he_su_fill_rtap_data(sts, plcp);
}
} else {
/* round non-HT data rate to nearest 500bkps unit */
sts->datarate = RSPEC2KBPS(rspec)/500;
}
}
/* Convert RX hardware status to standard format and send to wl_monitor
* assume p points to plcp header
*/
static uint16
wl_d11rx_to_rxsts(monitor_info_t* info, monitor_pkt_info_t* pkt_info, wlc_d11rxhdr_t *wrxh,
wlc_d11rxhdr_t *wrxh_last, void *pkt, uint16 len, void* pout, uint16 pad_req)
{
struct wl_rxsts sts;
monitor_pkt_rxsts_t pkt_rxsts;
ratespec_t rspec;
uint16 chan_num;
uint8 *plcp;
uint8 *p = (uint8*)pkt;
uint8 hwrxoff = 0;
uint32 corerev = 0;
uint32 corerev_minor = 0;
struct dot11_header *h;
uint16 subtype;
d11rxhdr_t *rxh = &(wrxh->rxhdr);
d11rxhdr_t *rxh_last = &(wrxh_last->rxhdr);
d11_info_t* d11i = info->d11_info;
uint8 plcp_len = 0;
BCM_REFERENCE(chan_num);
ASSERT(p);
ASSERT(info);
pkt_rxsts.rxsts = &sts;
hwrxoff = (pkt_info->marker >> 16) & 0xff;
corerev = d11i->major_revid;
corerev_minor = d11i->minor_revid;
BCM_REFERENCE(corerev_minor);
plcp = (uint8*)p + hwrxoff;
plcp_len = D11_PHY_RXPLCP_LEN(corerev);
/* only non short rxstatus is expected */
if (IS_D11RXHDRSHORT(rxh, corerev, corerev_minor)) {
printf("short rxstatus is not expected here!\n");
ASSERT(0);
return 0;
}
if (RXHDR_GET_PAD_PRES(rxh, corerev, corerev_minor)) {
plcp += 2;
}
bzero((void *)&sts, sizeof(wl_rxsts_t));
sts.mactime = wlc_recover_tsf32(pkt_info->ts.ts_high, pkt_info->ts.ts_low);
/* update rxpwr per antenna */
bcmwifi_update_rxpwr_per_ant(&pkt_rxsts, wrxh);
/* calculate rspec based on ppdu frame type */
rspec = wlc_recv_mon_compute_rspec(info, wrxh, plcp);
h = (struct dot11_header *)(plcp + plcp_len);
subtype = (ltoh16(h->fc) & FC_SUBTYPE_MASK) >> FC_SUBTYPE_SHIFT;
/* parse & cache respec for ampdu */
bcmwifi_parse_ampdu(info, rxh, subtype, rspec, plcp, &sts);
/* A-MSDU parsing */
if (RXHDR_GET_AMSDU(rxh, corerev, corerev_minor)) {
/* it's chained buffer, break it if necessary */
sts.nfrmtype |= WL_RXS_NFRM_AMSDU_FIRST | WL_RXS_NFRM_AMSDU_SUB;
}
sts.signal = (pkt_info->marker >> 8) & 0xff;
sts.noise = (int8)pkt_info->marker;
sts.chanspec = D11RXHDR_ACCESS_VAL(rxh, corerev, corerev_minor, RxChan);
if (wf_chspec_malformed(sts.chanspec)) {
printf("Malformed chspec, %x\n", sts.chanspec);
return 0;
}
/* 4360: is chan_num supposed to be primary or CF channel? */
chan_num = CHSPEC_CHANNEL(sts.chanspec);
if (PRXS5_ACPHY_DYNBWINNONHT(rxh))
sts.vhtflags |= WL_RXS_VHTF_DYN_BW_NONHT;
else
sts.vhtflags &= ~WL_RXS_VHTF_DYN_BW_NONHT;
switch (PRXS5_ACPHY_CHBWINNONHT(rxh)) {
default: case PRXS5_ACPHY_CHBWINNONHT_20MHZ:
sts.bw_nonht = WLC_20_MHZ;
break;
case PRXS5_ACPHY_CHBWINNONHT_40MHZ:
sts.bw_nonht = WLC_40_MHZ;
break;
case PRXS5_ACPHY_CHBWINNONHT_80MHZ:
sts.bw_nonht = WLC_80_MHZ;
break;
case PRXS5_ACPHY_CHBWINNONHT_160MHZ:
sts.bw_nonht = WLC_160_MHZ;
break;
}
/* update rate and modulation info */
bcmwifi_update_rate_modulation_info(info, rxh, rxh_last, rspec, plcp, &sts);
sts.pktlength = FRAMELEN(corerev, corerev_minor, rxh) - plcp_len;
sts.phytype = WL_RXS_PHY_N;
if (RSPEC_ISCCK(rspec)) {
sts.encoding = WL_RXS_ENCODING_DSSS_CCK;
sts.preamble = (PRXS_SHORTH(rxh, corerev, corerev_minor) ?
WL_RXS_PREAMBLE_SHORT : WL_RXS_PREAMBLE_LONG);
} else if (RSPEC_ISOFDM(rspec)) {
sts.encoding = WL_RXS_ENCODING_OFDM;
sts.preamble = WL_RXS_PREAMBLE_SHORT;
} if (RSPEC_ISVHT(rspec)) {
sts.encoding = WL_RXS_ENCODING_VHT;
} else if (RSPEC_ISHE(rspec)) {
sts.encoding = WL_RXS_ENCODING_HE;
} else if (RSPEC_ISEHT(rspec)) {
sts.encoding = WL_RXS_ENCODING_EHT;
} else { /* MCS rate */
sts.encoding = WL_RXS_ENCODING_HT;
sts.preamble = (uint32)((D11HT_MMPLCPLen(rxh) != 0) ?
WL_RXS_PREAMBLE_HT_MM : WL_RXS_PREAMBLE_HT_GF);
}
/* translate error code */
if (D11RXHDR_ACCESS_VAL(rxh, corerev, corerev_minor, RxStatus1) & RXS_DECERR)
sts.pkterror |= WL_RXS_DECRYPT_ERR;
if (D11RXHDR_ACCESS_VAL(rxh, corerev, corerev_minor, RxStatus1) & RXS_FCSERR)
sts.pkterror |= WL_RXS_CRC_ERROR;
if (RXHDR_GET_PAD_PRES(rxh, corerev, corerev_minor)) {
p += 2; len -= 2;
}
p += (hwrxoff + D11_PHY_RXPLCP_LEN(corerev));
len -= (hwrxoff + D11_PHY_RXPLCP_LEN(corerev));
return (wl_rxsts_to_rtap(&pkt_rxsts, p, len, pout, pad_req));
}
#ifndef MONITOR_DNGL_CONV
/* Collect AMSDU subframe packets */
static uint16
wl_monitor_amsdu(monitor_info_t* info, monitor_pkt_info_t* pkt_info, wlc_d11rxhdr_t *wrxh,
wlc_d11rxhdr_t *wrxh_last, void *pkt, uint16 len, void* pout, uint16* offset)
{
uint8 *p = pkt;
uint8 hwrxoff = (pkt_info->marker >> 16) & 0xff;
uint16 frame_len = 0;
uint16 aggtype = (wrxh->rxhdr.lt80.RxStatus2 & RXS_AGGTYPE_MASK) >> RXS_AGGTYPE_SHIFT;
switch (aggtype) {
case RXS_AMSDU_FIRST:
case RXS_AMSDU_N_ONE:
/* Flush any previously collected */
if (info->amsdu_len) {
info->amsdu_len = 0;
}
info->headroom = MAX_RADIOTAP_SIZE - D11_PHY_RXPLCP_LEN(corerev) - hwrxoff;
info->headroom -= (wrxh->rxhdr.lt80.RxStatus1 & RXS_PBPRES) ? 2 : 0;
/* Save the new starting AMSDU subframe */
info->amsdu_len = len;
info->amsdu_pkt = (uint8*)pout + (info->headroom > 0 ?
info->headroom : 0);
memcpy(info->amsdu_pkt, p, len);
if (aggtype == RXS_AMSDU_N_ONE) {
/* all-in-one AMSDU subframe */
frame_len = wl_d11rx_to_rxsts(info, pkt_info, wrxh, wrxh, p,
len, info->amsdu_pkt - info->headroom, 0);
*offset = ABS(info->headroom);
frame_len += *offset;
info->amsdu_len = 0;
}
break;
case RXS_AMSDU_INTERMEDIATE:
case RXS_AMSDU_LAST:
default:
/* Check for previously collected */
if (info->amsdu_len) {
/* Append next AMSDU subframe */
p += hwrxoff; len -= hwrxoff;
if (wrxh->rxhdr.lt80.RxStatus1 & RXS_PBPRES) {
p += 2; len -= 2;
}
memcpy(info->amsdu_pkt + info->amsdu_len, p, len);
info->amsdu_len += len;
/* complete AMSDU frame */
if (aggtype == RXS_AMSDU_LAST) {
frame_len = wl_d11rx_to_rxsts(info, pkt_info, wrxh, wrxh,
info->amsdu_pkt, info->amsdu_len,
info->amsdu_pkt - info->headroom, 0);
*offset = ABS(info->headroom);
frame_len += *offset;
info->amsdu_len = 0;
}
}
break;
}
return frame_len;
}
#endif /* MONITOR_DNGL_CONV */
uint16 bcmwifi_monitor_create(monitor_info_t** info)
{
*info = MALLOCZ(NULL, sizeof(struct monitor_info));
if ((*info) == NULL) {
return FALSE;
}
(*info)->d11_info = MALLOCZ(NULL, sizeof(struct d11_info));
if ((*info)->d11_info == NULL) {
goto fail;
}
return TRUE;
fail:
bcmwifi_monitor_delete(*info);
return FALSE;
}
void
bcmwifi_set_corerev_major(monitor_info_t* info, int8 corerev)
{
d11_info_t* d11i = info->d11_info;
d11i->major_revid = corerev;
}
void
bcmwifi_set_corerev_minor(monitor_info_t* info, int8 corerev)
{
d11_info_t* d11i = info->d11_info;
d11i->minor_revid = corerev;
}
void
bcmwifi_monitor_delete(monitor_info_t* info)
{
if (info == NULL) {
return;
}
if (info->d11_info != NULL) {
MFREE(NULL, info->d11_info, sizeof(struct d11_info));
}
MFREE(NULL, info, sizeof(struct monitor_info));
}
uint16
bcmwifi_monitor(monitor_info_t* info, monitor_pkt_info_t* pkt_info, void *pkt, uint16 len,
void* pout, uint16* offset, uint16 pad_req, void *wrxh_in, void *wrxh_last)
{
wlc_d11rxhdr_t *wrxh;
int hdr_ext_offset = 0;
#ifdef MONITOR_DNGL_CONV
wrxh = (wlc_d11rxhdr_t *)wrxh_in;
if (info == NULL) {
return 0;
}
#else
#ifdef BCM_MON_QDBM_RSSI
hdr_ext_offset = WLC_SWRXHDR_EXT_LEN;
#endif
/* move beyond the extension, if any */
pkt = (void *)((uint8 *)pkt + hdr_ext_offset);
wrxh = (wlc_d11rxhdr_t *)pkt;
if ((wrxh->rxhdr.lt80.RxStatus2 & htol16(RXS_AMSDU_MASK))) {
/* Need to add support for AMSDU */
return wl_monitor_amsdu(info, pkt_info, wrxh, wrxh_last, pkt, len, pout, offset);
} else
#endif /* NO MONITOR_DNGL_CONV */
{
info->amsdu_len = 0; /* reset amsdu */
*offset = 0;
return wl_d11rx_to_rxsts(info, pkt_info, wrxh, wrxh_last,
pkt, len - hdr_ext_offset, pout, pad_req);
}
}