/* * 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 * * This is UNPUBLISHED PROPRIETARY SOURCE CODE of Broadcom; * the contents of this file may not be disclosed to third parties, * copied or duplicated in any form, in whole or in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. * * * <> */ #include #include #include #include #include #include #include #include #include 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); } }