diff options
Diffstat (limited to 'sys/contrib/dev/iwlwifi/mld/rx.c')
| -rw-r--r-- | sys/contrib/dev/iwlwifi/mld/rx.c | 2137 |
1 files changed, 2137 insertions, 0 deletions
diff --git a/sys/contrib/dev/iwlwifi/mld/rx.c b/sys/contrib/dev/iwlwifi/mld/rx.c new file mode 100644 index 000000000000..b6dedd1ecd4d --- /dev/null +++ b/sys/contrib/dev/iwlwifi/mld/rx.c @@ -0,0 +1,2137 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* + * Copyright (C) 2024-2025 Intel Corporation + */ + +#include <net/mac80211.h> +#include <kunit/static_stub.h> + +#include "mld.h" +#include "sta.h" +#include "agg.h" +#include "rx.h" +#include "hcmd.h" +#include "iface.h" +#include "time_sync.h" +#include "fw/dbg.h" +#include "fw/api/rx.h" + +/* stores relevant PHY data fields extracted from iwl_rx_mpdu_desc */ +struct iwl_mld_rx_phy_data { + enum iwl_rx_phy_info_type info_type; + __le32 data0; + __le32 data1; + __le32 data2; + __le32 data3; + __le32 eht_data4; + __le32 data5; + __le16 data4; + bool first_subframe; + bool with_data; + __le32 rx_vec[4]; + u32 rate_n_flags; + u32 gp2_on_air_rise; + u16 phy_info; + u8 energy_a, energy_b; +}; + +static void +iwl_mld_fill_phy_data(struct iwl_mld *mld, + struct iwl_rx_mpdu_desc *desc, + struct iwl_mld_rx_phy_data *phy_data) +{ + phy_data->phy_info = le16_to_cpu(desc->phy_info); + phy_data->rate_n_flags = iwl_v3_rate_from_v2_v3(desc->v3.rate_n_flags, + mld->fw_rates_ver_3); + phy_data->gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise); + phy_data->energy_a = desc->v3.energy_a; + phy_data->energy_b = desc->v3.energy_b; + phy_data->data0 = desc->v3.phy_data0; + phy_data->data1 = desc->v3.phy_data1; + phy_data->data2 = desc->v3.phy_data2; + phy_data->data3 = desc->v3.phy_data3; + phy_data->data4 = desc->phy_data4; + phy_data->eht_data4 = desc->phy_eht_data4; + phy_data->data5 = desc->v3.phy_data5; + phy_data->with_data = true; +} + +static inline int iwl_mld_check_pn(struct iwl_mld *mld, struct sk_buff *skb, + int queue, struct ieee80211_sta *sta) +{ + struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb); + struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb); + struct iwl_mld_sta *mld_sta; + struct iwl_mld_ptk_pn *ptk_pn; + int res; + u8 tid, keyidx; + u8 pn[IEEE80211_CCMP_PN_LEN]; + u8 *extiv; + + /* multicast and non-data only arrives on default queue; avoid checking + * for default queue - we don't want to replicate all the logic that's + * necessary for checking the PN on fragmented frames, leave that + * to mac80211 + */ + if (queue == 0 || !ieee80211_is_data(hdr->frame_control) || + is_multicast_ether_addr(hdr->addr1)) + return 0; + + if (!(stats->flag & RX_FLAG_DECRYPTED)) + return 0; + + /* if we are here - this for sure is either CCMP or GCMP */ + if (!sta) { + IWL_DEBUG_DROP(mld, + "expected hw-decrypted unicast frame for station\n"); + return -1; + } + + mld_sta = iwl_mld_sta_from_mac80211(sta); + + extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); + keyidx = extiv[3] >> 6; + + ptk_pn = rcu_dereference(mld_sta->ptk_pn[keyidx]); + if (!ptk_pn) + return -1; + + if (ieee80211_is_data_qos(hdr->frame_control)) + tid = ieee80211_get_tid(hdr); + else + tid = 0; + + /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */ + if (tid >= IWL_MAX_TID_COUNT) + return -1; + + /* load pn */ + pn[0] = extiv[7]; + pn[1] = extiv[6]; + pn[2] = extiv[5]; + pn[3] = extiv[4]; + pn[4] = extiv[1]; + pn[5] = extiv[0]; + + res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN); + if (res < 0) + return -1; + if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN)) + return -1; + + memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN); + stats->flag |= RX_FLAG_PN_VALIDATED; + + return 0; +} + +/* iwl_mld_pass_packet_to_mac80211 - passes the packet for mac80211 */ +void iwl_mld_pass_packet_to_mac80211(struct iwl_mld *mld, + struct napi_struct *napi, + struct sk_buff *skb, int queue, + struct ieee80211_sta *sta) +{ + KUNIT_STATIC_STUB_REDIRECT(iwl_mld_pass_packet_to_mac80211, + mld, napi, skb, queue, sta); + + if (unlikely(iwl_mld_check_pn(mld, skb, queue, sta))) { + kfree_skb(skb); + return; + } + + ieee80211_rx_napi(mld->hw, sta, skb, napi); +} +EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mld_pass_packet_to_mac80211); + +static bool iwl_mld_used_average_energy(struct iwl_mld *mld, int link_id, + struct ieee80211_hdr *hdr, + struct ieee80211_rx_status *rx_status) +{ + struct ieee80211_bss_conf *link_conf; + struct iwl_mld_link *mld_link; + + if (unlikely(!hdr || link_id < 0)) + return false; + + if (likely(!ieee80211_is_beacon(hdr->frame_control))) + return false; + + /* + * if link ID is >= valid ones then that means the RX + * was on the AUX link and no correction is needed + */ + if (link_id >= mld->fw->ucode_capa.num_links) + return false; + + /* for the link conf lookup */ + guard(rcu)(); + + link_conf = rcu_dereference(mld->fw_id_to_bss_conf[link_id]); + if (!link_conf) + return false; + + mld_link = iwl_mld_link_from_mac80211(link_conf); + if (!mld_link) + return false; + + /* + * If we know the link by link ID then the frame was + * received for the link, so by filtering it means it + * was from the AP the link is connected to. + */ + + /* skip also in case we don't have it (yet) */ + if (!mld_link->average_beacon_energy) + return false; + + IWL_DEBUG_STATS(mld, "energy override by average %d\n", + mld_link->average_beacon_energy); + rx_status->signal = -mld_link->average_beacon_energy; + return true; +} + +static void iwl_mld_fill_signal(struct iwl_mld *mld, int link_id, + struct ieee80211_hdr *hdr, + struct ieee80211_rx_status *rx_status, + struct iwl_mld_rx_phy_data *phy_data) +{ + u32 rate_n_flags = phy_data->rate_n_flags; + int energy_a = phy_data->energy_a; + int energy_b = phy_data->energy_b; + int max_energy; + + energy_a = energy_a ? -energy_a : S8_MIN; + energy_b = energy_b ? -energy_b : S8_MIN; + max_energy = max(energy_a, energy_b); + + IWL_DEBUG_STATS(mld, "energy in A %d B %d, and max %d\n", + energy_a, energy_b, max_energy); + + if (iwl_mld_used_average_energy(mld, link_id, hdr, rx_status)) + return; + + rx_status->signal = max_energy; + rx_status->chains = u32_get_bits(rate_n_flags, RATE_MCS_ANT_AB_MSK); + rx_status->chain_signal[0] = energy_a; + rx_status->chain_signal[1] = energy_b; +} + +static void +iwl_mld_decode_he_phy_ru_alloc(struct iwl_mld_rx_phy_data *phy_data, + struct ieee80211_radiotap_he *he, + struct ieee80211_radiotap_he_mu *he_mu, + struct ieee80211_rx_status *rx_status) +{ + /* Unfortunately, we have to leave the mac80211 data + * incorrect for the case that we receive an HE-MU + * transmission and *don't* have the HE phy data (due + * to the bits being used for TSF). This shouldn't + * happen though as management frames where we need + * the TSF/timers are not be transmitted in HE-MU. + */ + u8 ru = le32_get_bits(phy_data->data1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK); + u32 rate_n_flags = phy_data->rate_n_flags; + u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK; + u8 offs = 0; + + rx_status->bw = RATE_INFO_BW_HE_RU; + + he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); + + switch (ru) { + case 0 ... 36: + rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26; + offs = ru; + break; + case 37 ... 52: + rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52; + offs = ru - 37; + break; + case 53 ... 60: + rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; + offs = ru - 53; + break; + case 61 ... 64: + rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242; + offs = ru - 61; + break; + case 65 ... 66: + rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484; + offs = ru - 65; + break; + case 67: + rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996; + break; + case 68: + rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996; + break; + } + he->data2 |= le16_encode_bits(offs, + IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET); + he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN | + IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN); + if (phy_data->data1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80)) + he->data2 |= + cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC); + +#define CHECK_BW(bw) \ + BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \ + RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \ + BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \ + RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS) + CHECK_BW(20); + CHECK_BW(40); + CHECK_BW(80); + CHECK_BW(160); + + if (he_mu) + he_mu->flags2 |= + le16_encode_bits(u32_get_bits(rate_n_flags, + RATE_MCS_CHAN_WIDTH_MSK), + IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW); + else if (he_type == RATE_MCS_HE_TYPE_TRIG) + he->data6 |= + cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) | + le16_encode_bits(u32_get_bits(rate_n_flags, + RATE_MCS_CHAN_WIDTH_MSK), + IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW); +} + +static void +iwl_mld_decode_he_mu_ext(struct iwl_mld_rx_phy_data *phy_data, + struct ieee80211_radiotap_he_mu *he_mu) +{ + u32 phy_data2 = le32_to_cpu(phy_data->data2); + u32 phy_data3 = le32_to_cpu(phy_data->data3); + u16 phy_data4 = le16_to_cpu(phy_data->data4); + u32 rate_n_flags = phy_data->rate_n_flags; + + if (u32_get_bits(phy_data4, IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK)) { + he_mu->flags1 |= + cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN | + IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN); + + he_mu->flags1 |= + le16_encode_bits(u32_get_bits(phy_data4, + IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU), + IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU); + + he_mu->ru_ch1[0] = u32_get_bits(phy_data2, + IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0); + he_mu->ru_ch1[1] = u32_get_bits(phy_data3, + IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1); + he_mu->ru_ch1[2] = u32_get_bits(phy_data2, + IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2); + he_mu->ru_ch1[3] = u32_get_bits(phy_data3, + IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3); + } + + if (u32_get_bits(phy_data4, IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK) && + (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) != RATE_MCS_CHAN_WIDTH_20) { + he_mu->flags1 |= + cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN | + IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN); + + he_mu->flags2 |= + le16_encode_bits(u32_get_bits(phy_data4, + IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU), + IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU); + + he_mu->ru_ch2[0] = u32_get_bits(phy_data2, + IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0); + he_mu->ru_ch2[1] = u32_get_bits(phy_data3, + IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1); + he_mu->ru_ch2[2] = u32_get_bits(phy_data2, + IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2); + he_mu->ru_ch2[3] = u32_get_bits(phy_data3, + IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3); + } +} + +static void +iwl_mld_decode_he_phy_data(struct iwl_mld_rx_phy_data *phy_data, + struct ieee80211_radiotap_he *he, + struct ieee80211_radiotap_he_mu *he_mu, + struct ieee80211_rx_status *rx_status, + int queue) +{ + switch (phy_data->info_type) { + case IWL_RX_PHY_INFO_TYPE_NONE: + case IWL_RX_PHY_INFO_TYPE_CCK: + case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY: + case IWL_RX_PHY_INFO_TYPE_HT: + case IWL_RX_PHY_INFO_TYPE_VHT_SU: + case IWL_RX_PHY_INFO_TYPE_VHT_MU: + case IWL_RX_PHY_INFO_TYPE_EHT_MU: + case IWL_RX_PHY_INFO_TYPE_EHT_TB: + case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT: + case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT: + return; + case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: + he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN | + IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN | + IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN | + IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN); + he->data4 |= le16_encode_bits(le32_get_bits(phy_data->data2, + IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1), + IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1); + he->data4 |= le16_encode_bits(le32_get_bits(phy_data->data2, + IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2), + IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2); + he->data4 |= le16_encode_bits(le32_get_bits(phy_data->data2, + IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3), + IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3); + he->data4 |= le16_encode_bits(le32_get_bits(phy_data->data2, + IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4), + IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4); + fallthrough; + case IWL_RX_PHY_INFO_TYPE_HE_SU: + case IWL_RX_PHY_INFO_TYPE_HE_MU: + case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: + case IWL_RX_PHY_INFO_TYPE_HE_TB: + /* HE common */ + he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN | + IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN | + IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN); + he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN | + IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN | + IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN | + IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN); + he->data3 |= le16_encode_bits(le32_get_bits(phy_data->data0, + IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK), + IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR); + if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB && + phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) { + he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN); + he->data3 |= le16_encode_bits(le32_get_bits(phy_data->data0, + IWL_RX_PHY_DATA0_HE_UPLINK), + IEEE80211_RADIOTAP_HE_DATA3_UL_DL); + } + he->data3 |= le16_encode_bits(le32_get_bits(phy_data->data0, + IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM), + IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG); + he->data5 |= le16_encode_bits(le32_get_bits(phy_data->data0, + IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK), + IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD); + he->data5 |= le16_encode_bits(le32_get_bits(phy_data->data0, + IWL_RX_PHY_DATA0_HE_PE_DISAMBIG), + IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG); + he->data5 |= le16_encode_bits(le32_get_bits(phy_data->data1, + IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK), + IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS); + he->data6 |= le16_encode_bits(le32_get_bits(phy_data->data0, + IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK), + IEEE80211_RADIOTAP_HE_DATA6_TXOP); + he->data6 |= le16_encode_bits(le32_get_bits(phy_data->data0, + IWL_RX_PHY_DATA0_HE_DOPPLER), + IEEE80211_RADIOTAP_HE_DATA6_DOPPLER); + break; + } + + switch (phy_data->info_type) { + case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: + case IWL_RX_PHY_INFO_TYPE_HE_MU: + case IWL_RX_PHY_INFO_TYPE_HE_SU: + he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN); + he->data4 |= le16_encode_bits(le32_get_bits(phy_data->data0, + IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK), + IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE); + break; + default: + /* nothing here */ + break; + } + + switch (phy_data->info_type) { + case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: + he_mu->flags1 |= + le16_encode_bits(le16_get_bits(phy_data->data4, + IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM), + IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM); + he_mu->flags1 |= + le16_encode_bits(le16_get_bits(phy_data->data4, + IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK), + IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS); + he_mu->flags2 |= + le16_encode_bits(le16_get_bits(phy_data->data4, + IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK), + IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW); + iwl_mld_decode_he_mu_ext(phy_data, he_mu); + fallthrough; + case IWL_RX_PHY_INFO_TYPE_HE_MU: + he_mu->flags2 |= + le16_encode_bits(le32_get_bits(phy_data->data1, + IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK), + IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS); + he_mu->flags2 |= + le16_encode_bits(le32_get_bits(phy_data->data1, + IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION), + IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP); + fallthrough; + case IWL_RX_PHY_INFO_TYPE_HE_TB: + case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: + iwl_mld_decode_he_phy_ru_alloc(phy_data, he, he_mu, rx_status); + break; + case IWL_RX_PHY_INFO_TYPE_HE_SU: + he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN); + he->data3 |= le16_encode_bits(le32_get_bits(phy_data->data0, + IWL_RX_PHY_DATA0_HE_BEAM_CHNG), + IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE); + break; + default: + /* nothing */ + break; + } +} + +static void iwl_mld_rx_he(struct iwl_mld *mld, struct sk_buff *skb, + struct iwl_mld_rx_phy_data *phy_data, + int queue) +{ + struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); + struct ieee80211_radiotap_he *he = NULL; + struct ieee80211_radiotap_he_mu *he_mu = NULL; + u32 rate_n_flags = phy_data->rate_n_flags; + u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK; + u8 ltf; + static const struct ieee80211_radiotap_he known = { + .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN | + IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN | + IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN | + IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN), + .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN | + IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN), + }; + static const struct ieee80211_radiotap_he_mu mu_known = { + .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN | + IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN | + IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN | + IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN), + .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN | + IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN), + }; + u16 phy_info = phy_data->phy_info; + + he = skb_put_data(skb, &known, sizeof(known)); + rx_status->flag |= RX_FLAG_RADIOTAP_HE; + + if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU || + phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) { + he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known)); + rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU; + } + + /* report the AMPDU-EOF bit on single frames */ + if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) { + rx_status->flag |= RX_FLAG_AMPDU_DETAILS; + rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN; + if (phy_data->data0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF)) + rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT; + } + + if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) + iwl_mld_decode_he_phy_data(phy_data, he, he_mu, rx_status, + queue); + + /* update aggregation data for monitor sake on default queue */ + if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) && + (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) { + rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN; + if (phy_data->data0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF)) + rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT; + } + + if (he_type == RATE_MCS_HE_TYPE_EXT_SU && + rate_n_flags & RATE_MCS_HE_106T_MSK) { + rx_status->bw = RATE_INFO_BW_HE_RU; + rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; + } + + /* actually data is filled in mac80211 */ + if (he_type == RATE_MCS_HE_TYPE_SU || + he_type == RATE_MCS_HE_TYPE_EXT_SU) + he->data1 |= + cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); + +#define CHECK_TYPE(F) \ + BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \ + (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS)) + + CHECK_TYPE(SU); + CHECK_TYPE(EXT_SU); + CHECK_TYPE(MU); + CHECK_TYPE(TRIG); + + he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS); + + if (rate_n_flags & RATE_MCS_BF_MSK) + he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF); + + switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >> + RATE_MCS_HE_GI_LTF_POS) { + case 0: + if (he_type == RATE_MCS_HE_TYPE_TRIG) + rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; + else + rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; + if (he_type == RATE_MCS_HE_TYPE_MU) + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; + else + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X; + break; + case 1: + if (he_type == RATE_MCS_HE_TYPE_TRIG) + rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; + else + rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X; + break; + case 2: + if (he_type == RATE_MCS_HE_TYPE_TRIG) { + rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2; + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; + } else { + rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X; + } + break; + case 3: + rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2; + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; + break; + case 4: + rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; + break; + default: + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN; + } + + he->data5 |= le16_encode_bits(ltf, + IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE); +} + +static void iwl_mld_decode_lsig(struct sk_buff *skb, + struct iwl_mld_rx_phy_data *phy_data) +{ + struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); + struct ieee80211_radiotap_lsig *lsig; + + switch (phy_data->info_type) { + case IWL_RX_PHY_INFO_TYPE_HT: + case IWL_RX_PHY_INFO_TYPE_VHT_SU: + case IWL_RX_PHY_INFO_TYPE_VHT_MU: + case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: + case IWL_RX_PHY_INFO_TYPE_HE_SU: + case IWL_RX_PHY_INFO_TYPE_HE_MU: + case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: + case IWL_RX_PHY_INFO_TYPE_HE_TB: + case IWL_RX_PHY_INFO_TYPE_EHT_MU: + case IWL_RX_PHY_INFO_TYPE_EHT_TB: + case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT: + case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT: + lsig = skb_put(skb, sizeof(*lsig)); + lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN); + lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->data1, + IWL_RX_PHY_DATA1_LSIG_LEN_MASK), + IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH); + rx_status->flag |= RX_FLAG_RADIOTAP_LSIG; + break; + default: + break; + } +} + +/* Put a TLV on the skb and return data pointer + * + * Also pad the len to 4 and zero out all data part + */ +static void * +iwl_mld_radiotap_put_tlv(struct sk_buff *skb, u16 type, u16 len) +{ + struct ieee80211_radiotap_tlv *tlv; + + tlv = skb_put(skb, sizeof(*tlv)); + tlv->type = cpu_to_le16(type); + tlv->len = cpu_to_le16(len); + return skb_put_zero(skb, ALIGN(len, 4)); +} + +#define LE32_DEC_ENC(value, dec_bits, enc_bits) \ + le32_encode_bits(le32_get_bits(value, dec_bits), enc_bits) + +#define IWL_MLD_ENC_USIG_VALUE_MASK(usig, in_value, dec_bits, enc_bits) do { \ + typeof(enc_bits) _enc_bits = enc_bits; \ + typeof(usig) _usig = usig; \ + (_usig)->mask |= cpu_to_le32(_enc_bits); \ + (_usig)->value |= LE32_DEC_ENC(in_value, dec_bits, _enc_bits); \ +} while (0) + +#define __IWL_MLD_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \ + eht->data[(rt_data)] |= \ + (cpu_to_le32 \ + (IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru ## _KNOWN) | \ + LE32_DEC_ENC(data ## fw_data, \ + IWL_RX_PHY_DATA ## fw_data ## _EHT_MU_EXT_RU_ALLOC_ ## fw_ru, \ + IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru)) + +#define _IWL_MLD_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \ + __IWL_MLD_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) + +#define IEEE80211_RADIOTAP_RU_DATA_1_1_1 1 +#define IEEE80211_RADIOTAP_RU_DATA_2_1_1 2 +#define IEEE80211_RADIOTAP_RU_DATA_1_1_2 2 +#define IEEE80211_RADIOTAP_RU_DATA_2_1_2 2 +#define IEEE80211_RADIOTAP_RU_DATA_1_2_1 3 +#define IEEE80211_RADIOTAP_RU_DATA_2_2_1 3 +#define IEEE80211_RADIOTAP_RU_DATA_1_2_2 3 +#define IEEE80211_RADIOTAP_RU_DATA_2_2_2 4 + +#define IWL_RX_RU_DATA_A1 2 +#define IWL_RX_RU_DATA_A2 2 +#define IWL_RX_RU_DATA_B1 2 +#define IWL_RX_RU_DATA_B2 4 +#define IWL_RX_RU_DATA_C1 3 +#define IWL_RX_RU_DATA_C2 3 +#define IWL_RX_RU_DATA_D1 4 +#define IWL_RX_RU_DATA_D2 4 + +#define IWL_MLD_ENC_EHT_RU(rt_ru, fw_ru) \ + _IWL_MLD_ENC_EHT_RU(IEEE80211_RADIOTAP_RU_DATA_ ## rt_ru, \ + rt_ru, \ + IWL_RX_RU_DATA_ ## fw_ru, \ + fw_ru) + +static void iwl_mld_decode_eht_ext_mu(struct iwl_mld *mld, + struct iwl_mld_rx_phy_data *phy_data, + struct ieee80211_rx_status *rx_status, + struct ieee80211_radiotap_eht *eht, + struct ieee80211_radiotap_eht_usig *usig) +{ + if (phy_data->with_data) { + __le32 data1 = phy_data->data1; + __le32 data2 = phy_data->data2; + __le32 data3 = phy_data->data3; + __le32 data4 = phy_data->eht_data4; + __le32 data5 = phy_data->data5; + u32 phy_bw = phy_data->rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK; + + IWL_MLD_ENC_USIG_VALUE_MASK(usig, data5, + IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP, + IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, data5, + IWL_RX_PHY_DATA5_EHT_MU_PUNC_CH_CODE, + IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, data4, + IWL_RX_PHY_DATA4_EHT_MU_EXT_SIGB_MCS, + IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS); + IWL_MLD_ENC_USIG_VALUE_MASK + (usig, data1, IWL_RX_PHY_DATA1_EHT_MU_NUM_SIG_SYM_USIGA2, + IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS); + + eht->user_info[0] |= + cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID_KNOWN) | + LE32_DEC_ENC(data5, IWL_RX_PHY_DATA5_EHT_MU_STA_ID_USR, + IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID); + + eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NR_NON_OFDMA_USERS_M); + eht->data[7] |= LE32_DEC_ENC + (data5, IWL_RX_PHY_DATA5_EHT_MU_NUM_USR_NON_OFDMA, + IEEE80211_RADIOTAP_EHT_DATA7_NUM_OF_NON_OFDMA_USERS); + + /* + * Hardware labels the content channels/RU allocation values + * as follows: + * Content Channel 1 Content Channel 2 + * 20 MHz: A1 + * 40 MHz: A1 B1 + * 80 MHz: A1 C1 B1 D1 + * 160 MHz: A1 C1 A2 C2 B1 D1 B2 D2 + * 320 MHz: A1 C1 A2 C2 A3 C3 A4 C4 B1 D1 B2 D2 B3 D3 B4 D4 + * + * However firmware can only give us A1-D2, so the higher + * frequencies are missing. + */ + + switch (phy_bw) { + case RATE_MCS_CHAN_WIDTH_320: + /* additional values are missing in RX metadata */ + fallthrough; + case RATE_MCS_CHAN_WIDTH_160: + /* content channel 1 */ + IWL_MLD_ENC_EHT_RU(1_2_1, A2); + IWL_MLD_ENC_EHT_RU(1_2_2, C2); + /* content channel 2 */ + IWL_MLD_ENC_EHT_RU(2_2_1, B2); + IWL_MLD_ENC_EHT_RU(2_2_2, D2); + fallthrough; + case RATE_MCS_CHAN_WIDTH_80: + /* content channel 1 */ + IWL_MLD_ENC_EHT_RU(1_1_2, C1); + /* content channel 2 */ + IWL_MLD_ENC_EHT_RU(2_1_2, D1); + fallthrough; + case RATE_MCS_CHAN_WIDTH_40: + /* content channel 2 */ + IWL_MLD_ENC_EHT_RU(2_1_1, B1); + fallthrough; + case RATE_MCS_CHAN_WIDTH_20: + IWL_MLD_ENC_EHT_RU(1_1_1, A1); + break; + } + } else { + __le32 usig_a1 = phy_data->rx_vec[0]; + __le32 usig_a2 = phy_data->rx_vec[1]; + + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a1, + IWL_RX_USIG_A1_DISREGARD, + IEEE80211_RADIOTAP_EHT_USIG1_MU_B20_B24_DISREGARD); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a1, + IWL_RX_USIG_A1_VALIDATE, + IEEE80211_RADIOTAP_EHT_USIG1_MU_B25_VALIDATE); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a2, + IWL_RX_USIG_A2_EHT_PPDU_TYPE, + IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a2, + IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2, + IEEE80211_RADIOTAP_EHT_USIG2_MU_B2_VALIDATE); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a2, + IWL_RX_USIG_A2_EHT_PUNC_CHANNEL, + IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a2, + IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B8, + IEEE80211_RADIOTAP_EHT_USIG2_MU_B8_VALIDATE); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a2, + IWL_RX_USIG_A2_EHT_SIG_MCS, + IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS); + IWL_MLD_ENC_USIG_VALUE_MASK + (usig, usig_a2, IWL_RX_USIG_A2_EHT_SIG_SYM_NUM, + IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a2, + IWL_RX_USIG_A2_EHT_CRC_OK, + IEEE80211_RADIOTAP_EHT_USIG2_MU_B16_B19_CRC); + } +} + +static void iwl_mld_decode_eht_ext_tb(struct iwl_mld *mld, + struct iwl_mld_rx_phy_data *phy_data, + struct ieee80211_rx_status *rx_status, + struct ieee80211_radiotap_eht *eht, + struct ieee80211_radiotap_eht_usig *usig) +{ + if (phy_data->with_data) { + __le32 data5 = phy_data->data5; + + IWL_MLD_ENC_USIG_VALUE_MASK(usig, data5, + IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP, + IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, data5, + IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE1, + IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1); + + IWL_MLD_ENC_USIG_VALUE_MASK(usig, data5, + IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE2, + IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2); + } else { + __le32 usig_a1 = phy_data->rx_vec[0]; + __le32 usig_a2 = phy_data->rx_vec[1]; + + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a1, + IWL_RX_USIG_A1_DISREGARD, + IEEE80211_RADIOTAP_EHT_USIG1_TB_B20_B25_DISREGARD); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a2, + IWL_RX_USIG_A2_EHT_PPDU_TYPE, + IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a2, + IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2, + IEEE80211_RADIOTAP_EHT_USIG2_TB_B2_VALIDATE); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a2, + IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_1, + IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a2, + IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_2, + IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a2, + IWL_RX_USIG_A2_EHT_TRIG_USIG2_DISREGARD, + IEEE80211_RADIOTAP_EHT_USIG2_TB_B11_B15_DISREGARD); + IWL_MLD_ENC_USIG_VALUE_MASK(usig, usig_a2, + IWL_RX_USIG_A2_EHT_CRC_OK, + IEEE80211_RADIOTAP_EHT_USIG2_TB_B16_B19_CRC); + } +} + +static void iwl_mld_decode_eht_ru(struct iwl_mld *mld, + struct ieee80211_rx_status *rx_status, + struct ieee80211_radiotap_eht *eht) +{ + u32 ru = le32_get_bits(eht->data[8], + IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1); + enum nl80211_eht_ru_alloc nl_ru; + + /* Using D1.5 Table 9-53a - Encoding of PS160 and RU Allocation subfields + * in an EHT variant User Info field + */ + + switch (ru) { + case 0 ... 36: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_26; + break; + case 37 ... 52: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52; + break; + case 53 ... 60: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106; + break; + case 61 ... 64: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_242; + break; + case 65 ... 66: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484; + break; + case 67: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996; + break; + case 68: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996; + break; + case 69: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_4x996; + break; + case 70 ... 81: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52P26; + break; + case 82 ... 89: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106P26; + break; + case 90 ... 93: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484P242; + break; + case 94 ... 95: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484; + break; + case 96 ... 99: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484P242; + break; + case 100 ... 103: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996P484; + break; + case 104: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996; + break; + case 105 ... 106: + nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996P484; + break; + default: + return; + } + + rx_status->bw = RATE_INFO_BW_EHT_RU; + rx_status->eht.ru = nl_ru; +} + +static void iwl_mld_decode_eht_phy_data(struct iwl_mld *mld, + struct iwl_mld_rx_phy_data *phy_data, + struct ieee80211_rx_status *rx_status, + struct ieee80211_radiotap_eht *eht, + struct ieee80211_radiotap_eht_usig *usig) + +{ + __le32 data0 = phy_data->data0; + __le32 data1 = phy_data->data1; + __le32 usig_a1 = phy_data->rx_vec[0]; + u8 info_type = phy_data->info_type; + + /* Not in EHT range */ + if (info_type < IWL_RX_PHY_INFO_TYPE_EHT_MU || + info_type > IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT) + return; + + usig->common |= cpu_to_le32 + (IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL_KNOWN | + IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR_KNOWN); + if (phy_data->with_data) { + usig->common |= LE32_DEC_ENC(data0, + IWL_RX_PHY_DATA0_EHT_UPLINK, + IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL); + usig->common |= LE32_DEC_ENC(data0, + IWL_RX_PHY_DATA0_EHT_BSS_COLOR_MASK, + IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR); + } else { + usig->common |= LE32_DEC_ENC(usig_a1, + IWL_RX_USIG_A1_UL_FLAG, + IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL); + usig->common |= LE32_DEC_ENC(usig_a1, + IWL_RX_USIG_A1_BSS_COLOR, + IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR); + } + + usig->common |= + cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_CHECKED); + usig->common |= + LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_VALIDATE, + IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_OK); + + eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_SPATIAL_REUSE); + eht->data[0] |= LE32_DEC_ENC(data0, + IWL_RX_PHY_DATA0_ETH_SPATIAL_REUSE_MASK, + IEEE80211_RADIOTAP_EHT_DATA0_SPATIAL_REUSE); + + /* All RU allocating size/index is in TB format */ + eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_RU_ALLOC_TB_FMT); + eht->data[8] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PS160, + IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_PS_160); + eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B0, + IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B0); + eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B1_B7, + IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1); + + iwl_mld_decode_eht_ru(mld, rx_status, eht); + + /* We only get here in case of IWL_RX_MPDU_PHY_TSF_OVERLOAD is set + * which is on only in case of monitor mode so no need to check monitor + * mode + */ + eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRIMARY_80); + eht->data[1] |= + le32_encode_bits(mld->monitor.p80, + IEEE80211_RADIOTAP_EHT_DATA1_PRIMARY_80); + + usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP_KNOWN); + if (phy_data->with_data) + usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_TXOP_DUR_MASK, + IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP); + else + usig->common |= LE32_DEC_ENC(usig_a1, IWL_RX_USIG_A1_TXOP_DURATION, + IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP); + + eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_LDPC_EXTRA_SYM_OM); + eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_LDPC_EXT_SYM, + IEEE80211_RADIOTAP_EHT_DATA0_LDPC_EXTRA_SYM_OM); + + eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRE_PADD_FACOR_OM); + eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PRE_FEC_PAD_MASK, + IEEE80211_RADIOTAP_EHT_DATA0_PRE_PADD_FACOR_OM); + + eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PE_DISAMBIGUITY_OM); + eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PE_DISAMBIG, + IEEE80211_RADIOTAP_EHT_DATA0_PE_DISAMBIGUITY_OM); + + /* TODO: what about IWL_RX_PHY_DATA0_EHT_BW320_SLOT */ + + if (!le32_get_bits(data0, IWL_RX_PHY_DATA0_EHT_SIGA_CRC_OK)) + usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BAD_USIG_CRC); + + usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER_KNOWN); + usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PHY_VER, + IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER); + + /* + * TODO: what about TB - IWL_RX_PHY_DATA1_EHT_TB_PILOT_TYPE, + * IWL_RX_PHY_DATA1_EHT_TB_LOW_SS + */ + + eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_EHT_LTF); + eht->data[0] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_SIG_LTF_NUM, + IEEE80211_RADIOTAP_EHT_DATA0_EHT_LTF); + + if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT || + info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB) + iwl_mld_decode_eht_ext_tb(mld, phy_data, rx_status, eht, usig); + + if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT || + info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU) + iwl_mld_decode_eht_ext_mu(mld, phy_data, rx_status, eht, usig); +} + +static void iwl_mld_rx_eht(struct iwl_mld *mld, struct sk_buff *skb, + struct iwl_mld_rx_phy_data *phy_data, + int queue) +{ + struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); + struct ieee80211_radiotap_eht *eht; + struct ieee80211_radiotap_eht_usig *usig; + size_t eht_len = sizeof(*eht); + + u32 rate_n_flags = phy_data->rate_n_flags; + u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK; + /* EHT and HE have the same values for LTF */ + u8 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN; + u16 phy_info = phy_data->phy_info; + u32 bw; + + /* u32 for 1 user_info */ + if (phy_data->with_data) + eht_len += sizeof(u32); + + eht = iwl_mld_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT, eht_len); + + usig = iwl_mld_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG, + sizeof(*usig)); + rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END; + usig->common |= + cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW_KNOWN); + + /* specific handling for 320MHz */ + bw = u32_get_bits(rate_n_flags, RATE_MCS_CHAN_WIDTH_MSK); + if (bw == RATE_MCS_CHAN_WIDTH_320_VAL) + bw += le32_get_bits(phy_data->data0, + IWL_RX_PHY_DATA0_EHT_BW320_SLOT); + + usig->common |= cpu_to_le32 + (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW, bw)); + + /* report the AMPDU-EOF bit on single frames */ + if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) { + rx_status->flag |= RX_FLAG_AMPDU_DETAILS; + rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN; + if (phy_data->data0 & + cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF)) + rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT; + } + + /* update aggregation data for monitor sake on default queue */ + if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) && + (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) { + rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN; + if (phy_data->data0 & + cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF)) + rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT; + } + + if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) + iwl_mld_decode_eht_phy_data(mld, phy_data, rx_status, eht, usig); + +#define CHECK_TYPE(F) \ + BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \ + (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS)) + + CHECK_TYPE(SU); + CHECK_TYPE(EXT_SU); + CHECK_TYPE(MU); + CHECK_TYPE(TRIG); + + switch (u32_get_bits(rate_n_flags, RATE_MCS_HE_GI_LTF_MSK)) { + case 0: + if (he_type == RATE_MCS_HE_TYPE_TRIG) { + rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6; + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X; + } else { + rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8; + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X; + } + break; + case 1: + rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6; + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X; + break; + case 2: + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; + if (he_type == RATE_MCS_HE_TYPE_TRIG) + rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2; + else + rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8; + break; + case 3: + if (he_type != RATE_MCS_HE_TYPE_TRIG) { + ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; + rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2; + } + break; + default: + /* nothing here */ + break; + } + + if (ltf != IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN) { + eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_GI); + eht->data[0] |= cpu_to_le32 + (FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF, + ltf) | + FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI, + rx_status->eht.gi)); + } + + if (!phy_data->with_data) { + eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NSS_S | + IEEE80211_RADIOTAP_EHT_KNOWN_BEAMFORMED_S); + eht->data[7] |= + le32_encode_bits(le32_get_bits(phy_data->rx_vec[2], + RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK), + IEEE80211_RADIOTAP_EHT_DATA7_NSS_S); + if (rate_n_flags & RATE_MCS_BF_MSK) + eht->data[7] |= + cpu_to_le32(IEEE80211_RADIOTAP_EHT_DATA7_BEAMFORMED_S); + } else { + eht->user_info[0] |= + cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS_KNOWN | + IEEE80211_RADIOTAP_EHT_USER_INFO_CODING_KNOWN | + IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_KNOWN_O | + IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_KNOWN_O | + IEEE80211_RADIOTAP_EHT_USER_INFO_DATA_FOR_USER); + + if (rate_n_flags & RATE_MCS_BF_MSK) + eht->user_info[0] |= + cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_O); + + if (rate_n_flags & RATE_MCS_LDPC_MSK) + eht->user_info[0] |= + cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_CODING); + + eht->user_info[0] |= cpu_to_le32 + (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS, + u32_get_bits(rate_n_flags, + RATE_VHT_MCS_RATE_CODE_MSK)) | + FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O, + u32_get_bits(rate_n_flags, + RATE_MCS_NSS_MSK))); + } +} + +#ifdef CONFIG_IWLWIFI_DEBUGFS +static void iwl_mld_add_rtap_sniffer_config(struct iwl_mld *mld, + struct sk_buff *skb) +{ + struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); + struct ieee80211_radiotap_vendor_content *radiotap; + const u16 vendor_data_len = sizeof(mld->monitor.cur_aid); + + if (!mld->monitor.cur_aid) + return; + + radiotap = + iwl_mld_radiotap_put_tlv(skb, + IEEE80211_RADIOTAP_VENDOR_NAMESPACE, + sizeof(*radiotap) + vendor_data_len); + + /* Intel OUI */ + radiotap->oui[0] = 0xf6; + radiotap->oui[1] = 0x54; + radiotap->oui[2] = 0x25; + /* radiotap sniffer config sub-namespace */ + radiotap->oui_subtype = 1; + radiotap->vendor_type = 0; + + /* fill the data now */ + memcpy(radiotap->data, &mld->monitor.cur_aid, + sizeof(mld->monitor.cur_aid)); + + rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END; +} +#endif + +/* Note: hdr can be NULL */ +static void iwl_mld_rx_fill_status(struct iwl_mld *mld, int link_id, + struct ieee80211_hdr *hdr, + struct sk_buff *skb, + struct iwl_mld_rx_phy_data *phy_data, + int queue) +{ + struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); + u32 format = phy_data->rate_n_flags & RATE_MCS_MOD_TYPE_MSK; + u32 rate_n_flags = phy_data->rate_n_flags; + u8 stbc = u32_get_bits(rate_n_flags, RATE_MCS_STBC_MSK); + bool is_sgi = rate_n_flags & RATE_MCS_SGI_MSK; + + phy_data->info_type = IWL_RX_PHY_INFO_TYPE_NONE; + + if (phy_data->phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) + phy_data->info_type = + le32_get_bits(phy_data->data1, + IWL_RX_PHY_DATA1_INFO_TYPE_MASK); + + /* set the preamble flag if appropriate */ + if (format == RATE_MCS_MOD_TYPE_CCK && + phy_data->phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE) + rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE; + + iwl_mld_fill_signal(mld, link_id, hdr, rx_status, phy_data); + + /* This may be overridden by iwl_mld_rx_he() to HE_RU */ + switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { + case RATE_MCS_CHAN_WIDTH_20: + break; + case RATE_MCS_CHAN_WIDTH_40: + rx_status->bw = RATE_INFO_BW_40; + break; + case RATE_MCS_CHAN_WIDTH_80: + rx_status->bw = RATE_INFO_BW_80; + break; + case RATE_MCS_CHAN_WIDTH_160: + rx_status->bw = RATE_INFO_BW_160; + break; + case RATE_MCS_CHAN_WIDTH_320: + rx_status->bw = RATE_INFO_BW_320; + break; + } + + /* must be before L-SIG data */ + if (format == RATE_MCS_MOD_TYPE_HE) + iwl_mld_rx_he(mld, skb, phy_data, queue); + + iwl_mld_decode_lsig(skb, phy_data); + + rx_status->device_timestamp = phy_data->gp2_on_air_rise; + + /* using TLV format and must be after all fixed len fields */ + if (format == RATE_MCS_MOD_TYPE_EHT) + iwl_mld_rx_eht(mld, skb, phy_data, queue); + +#ifdef CONFIG_IWLWIFI_DEBUGFS + if (unlikely(mld->monitor.on)) { + iwl_mld_add_rtap_sniffer_config(mld, skb); + + if (mld->monitor.ptp_time) { + u64 adj_time = + iwl_mld_ptp_get_adj_time(mld, + phy_data->gp2_on_air_rise * + NSEC_PER_USEC); + + rx_status->mactime = div64_u64(adj_time, NSEC_PER_USEC); + rx_status->flag |= RX_FLAG_MACTIME_IS_RTAP_TS64; + rx_status->flag &= ~RX_FLAG_MACTIME; + } + } +#endif + + if (format != RATE_MCS_MOD_TYPE_CCK && is_sgi) + rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI; + + if (rate_n_flags & RATE_MCS_LDPC_MSK) + rx_status->enc_flags |= RX_ENC_FLAG_LDPC; + + switch (format) { + case RATE_MCS_MOD_TYPE_HT: + rx_status->encoding = RX_ENC_HT; + rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags); + rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; + break; + case RATE_MCS_MOD_TYPE_VHT: + case RATE_MCS_MOD_TYPE_HE: + case RATE_MCS_MOD_TYPE_EHT: + if (format == RATE_MCS_MOD_TYPE_VHT) { + rx_status->encoding = RX_ENC_VHT; + } else if (format == RATE_MCS_MOD_TYPE_HE) { + rx_status->encoding = RX_ENC_HE; + rx_status->he_dcm = + !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK); + } else if (format == RATE_MCS_MOD_TYPE_EHT) { + rx_status->encoding = RX_ENC_EHT; + } + + rx_status->nss = u32_get_bits(rate_n_flags, + RATE_MCS_NSS_MSK) + 1; + rx_status->rate_idx = rate_n_flags & RATE_MCS_CODE_MSK; + rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; + break; + default: { + int rate = + iwl_mld_legacy_hw_idx_to_mac80211_idx(rate_n_flags, + rx_status->band); + + /* valid rate */ + if (rate >= 0 && rate <= 0xFF) { + rx_status->rate_idx = rate; + break; + } + + /* invalid rate */ + rx_status->rate_idx = 0; + + if (net_ratelimit()) + IWL_ERR(mld, "invalid rate_n_flags=0x%x, band=%d\n", + rate_n_flags, rx_status->band); + break; + } + } +} + +/* iwl_mld_create_skb adds the rxb to a new skb */ +static int iwl_mld_build_rx_skb(struct iwl_mld *mld, struct sk_buff *skb, + struct ieee80211_hdr *hdr, u16 len, + u8 crypt_len, struct iwl_rx_cmd_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; + unsigned int headlen, fraglen, pad_len = 0; + unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control); + u8 mic_crc_len = u8_get_bits(desc->mac_flags1, + IWL_RX_MPDU_MFLG1_MIC_CRC_LEN_MASK) << 1; + + if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) { + len -= 2; + pad_len = 2; + } + + /* For non monitor interface strip the bytes the RADA might not have + * removed (it might be disabled, e.g. for mgmt frames). As a monitor + * interface cannot exist with other interfaces, this removal is safe + * and sufficient, in monitor mode there's no decryption being done. + */ + if (len > mic_crc_len && !ieee80211_hw_check(mld->hw, RX_INCLUDES_FCS)) + len -= mic_crc_len; + + /* If frame is small enough to fit in skb->head, pull it completely. + * If not, only pull ieee80211_hdr (including crypto if present, and + * an additional 8 bytes for SNAP/ethertype, see below) so that + * splice() or TCP coalesce are more efficient. + * + * Since, in addition, ieee80211_data_to_8023() always pull in at + * least 8 bytes (possibly more for mesh) we can do the same here + * to save the cost of doing it later. That still doesn't pull in + * the actual IP header since the typical case has a SNAP header. + * If the latter changes (there are efforts in the standards group + * to do so) we should revisit this and ieee80211_data_to_8023(). + */ + headlen = (len <= skb_tailroom(skb)) ? len : hdrlen + crypt_len + 8; + + /* The firmware may align the packet to DWORD. + * The padding is inserted after the IV. + * After copying the header + IV skip the padding if + * present before copying packet data. + */ + hdrlen += crypt_len; + + if (unlikely(headlen < hdrlen)) + return -EINVAL; + + /* Since data doesn't move data while putting data on skb and that is + * the only way we use, data + len is the next place that hdr would + * be put + */ + skb_set_mac_header(skb, skb->len); + skb_put_data(skb, hdr, hdrlen); + skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen); + + if (skb->ip_summed == CHECKSUM_COMPLETE) { + struct { + u8 hdr[6]; + __be16 type; + } __packed *shdr = (void *)((u8 *)hdr + hdrlen + pad_len); + + if (unlikely(headlen - hdrlen < sizeof(*shdr) || + !ether_addr_equal(shdr->hdr, rfc1042_header) || + (shdr->type != htons(ETH_P_IP) && + shdr->type != htons(ETH_P_ARP) && + shdr->type != htons(ETH_P_IPV6) && + shdr->type != htons(ETH_P_8021Q) && + shdr->type != htons(ETH_P_PAE) && + shdr->type != htons(ETH_P_TDLS)))) + skb->ip_summed = CHECKSUM_NONE; + } + + fraglen = len - headlen; + + if (fraglen) { + int offset = (u8 *)hdr + headlen + pad_len - + (u8 *)rxb_addr(rxb) + rxb_offset(rxb); + + skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, + fraglen, rxb->truesize); + } + + return 0; +} + +/* returns true if a packet is a duplicate or invalid tid and + * should be dropped. Updates AMSDU PN tracking info + */ +VISIBLE_IF_IWLWIFI_KUNIT +bool +iwl_mld_is_dup(struct iwl_mld *mld, struct ieee80211_sta *sta, + struct ieee80211_hdr *hdr, + const struct iwl_rx_mpdu_desc *mpdu_desc, + struct ieee80211_rx_status *rx_status, int queue) +{ + struct iwl_mld_sta *mld_sta; + struct iwl_mld_rxq_dup_data *dup_data; + u8 tid, sub_frame_idx; + + if (WARN_ON(!sta)) + return false; + + mld_sta = iwl_mld_sta_from_mac80211(sta); + + if (WARN_ON_ONCE(!mld_sta->dup_data)) + return false; + + dup_data = &mld_sta->dup_data[queue]; + + /* Drop duplicate 802.11 retransmissions + * (IEEE 802.11-2020: 10.3.2.14 "Duplicate detection and recovery") + */ + if (ieee80211_is_ctl(hdr->frame_control) || + ieee80211_is_any_nullfunc(hdr->frame_control) || + is_multicast_ether_addr(hdr->addr1)) + return false; + + if (ieee80211_is_data_qos(hdr->frame_control)) { + /* frame has qos control */ + tid = ieee80211_get_tid(hdr); + if (tid >= IWL_MAX_TID_COUNT) + return true; + } else { + tid = IWL_MAX_TID_COUNT; + } + + /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */ + sub_frame_idx = mpdu_desc->amsdu_info & + IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK; + + if (IWL_FW_CHECK(mld, + sub_frame_idx > 0 && + !(mpdu_desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU), + "got sub_frame_idx=%d but A-MSDU flag is not set\n", + sub_frame_idx)) + return true; + + if (unlikely(ieee80211_has_retry(hdr->frame_control) && + dup_data->last_seq[tid] == hdr->seq_ctrl && + dup_data->last_sub_frame_idx[tid] >= sub_frame_idx)) + return true; + + /* Allow same PN as the first subframe for following sub frames */ + if (dup_data->last_seq[tid] == hdr->seq_ctrl && + sub_frame_idx > dup_data->last_sub_frame_idx[tid]) + rx_status->flag |= RX_FLAG_ALLOW_SAME_PN; + + dup_data->last_seq[tid] = hdr->seq_ctrl; + dup_data->last_sub_frame_idx[tid] = sub_frame_idx; + + rx_status->flag |= RX_FLAG_DUP_VALIDATED; + + return false; +} +EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mld_is_dup); + +static void iwl_mld_update_last_rx_timestamp(struct iwl_mld *mld, u8 baid) +{ + unsigned long now = jiffies; + unsigned long timeout; + struct iwl_mld_baid_data *ba_data; + + ba_data = rcu_dereference(mld->fw_id_to_ba[baid]); + if (!ba_data) { + IWL_DEBUG_HT(mld, "BAID %d not found in map\n", baid); + return; + } + + if (!ba_data->timeout) + return; + + /* To minimize cache bouncing between RX queues, avoid frequent updates + * to last_rx_timestamp. update it only when the timeout period has + * passed. The worst-case scenario is the session expiring after + * approximately 2 * timeout, which is negligible (the update is + * atomic). + */ + timeout = TU_TO_JIFFIES(ba_data->timeout); + if (time_is_before_jiffies(ba_data->last_rx_timestamp + timeout)) + ba_data->last_rx_timestamp = now; +} + +/* Processes received packets for a station. + * Sets *drop to true if the packet should be dropped. + * Returns the station if found, or NULL otherwise. + */ +static struct ieee80211_sta * +iwl_mld_rx_with_sta(struct iwl_mld *mld, struct ieee80211_hdr *hdr, + struct sk_buff *skb, + const struct iwl_rx_mpdu_desc *mpdu_desc, + const struct iwl_rx_packet *pkt, int queue, bool *drop) +{ + struct ieee80211_sta *sta = NULL; + struct ieee80211_link_sta *link_sta = NULL; + struct ieee80211_rx_status *rx_status; + u8 baid; + + if (mpdu_desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) { + u8 sta_id = le32_get_bits(mpdu_desc->status, + IWL_RX_MPDU_STATUS_STA_ID); + + if (IWL_FW_CHECK(mld, + sta_id >= mld->fw->ucode_capa.num_stations, + "rx_mpdu: invalid sta_id %d\n", sta_id)) + return NULL; + + link_sta = rcu_dereference(mld->fw_id_to_link_sta[sta_id]); + if (!IS_ERR_OR_NULL(link_sta)) + sta = link_sta->sta; + } else if (!is_multicast_ether_addr(hdr->addr2)) { + /* Passing NULL is fine since we prevent two stations with the + * same address from being added. + */ + sta = ieee80211_find_sta_by_ifaddr(mld->hw, hdr->addr2, NULL); + } + + /* we may not have any station yet */ + if (!sta) + return NULL; + + rx_status = IEEE80211_SKB_RXCB(skb); + + if (link_sta && sta->valid_links) { + rx_status->link_valid = true; + rx_status->link_id = link_sta->link_id; + } + + /* fill checksum */ + if (ieee80211_is_data(hdr->frame_control) && + pkt->len_n_flags & cpu_to_le32(FH_RSCSR_RPA_EN)) { + u16 hwsum = be16_to_cpu(mpdu_desc->v3.raw_xsum); + + skb->ip_summed = CHECKSUM_COMPLETE; + skb->csum = csum_unfold(~(__force __sum16)hwsum); + } + + if (iwl_mld_is_dup(mld, sta, hdr, mpdu_desc, rx_status, queue)) { + IWL_DEBUG_DROP(mld, "Dropping duplicate packet 0x%x\n", + le16_to_cpu(hdr->seq_ctrl)); + *drop = true; + return NULL; + } + + baid = le32_get_bits(mpdu_desc->reorder_data, + IWL_RX_MPDU_REORDER_BAID_MASK); + if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) + iwl_mld_update_last_rx_timestamp(mld, baid); + + if (link_sta && ieee80211_is_data(hdr->frame_control)) { + u8 sub_frame_idx = mpdu_desc->amsdu_info & + IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK; + + /* 0 means not an A-MSDU, and 1 means a new A-MSDU */ + if (!sub_frame_idx || sub_frame_idx == 1) + iwl_mld_count_mpdu_rx(link_sta, queue, 1); + + if (!is_multicast_ether_addr(hdr->addr1)) + iwl_mld_low_latency_update_counters(mld, hdr, sta, + queue); + } + + return sta; +} + +#define KEY_IDX_LEN 2 + +static int iwl_mld_rx_mgmt_prot(struct ieee80211_sta *sta, + struct ieee80211_hdr *hdr, + struct ieee80211_rx_status *rx_status, + u32 mpdu_status, + u32 mpdu_len) +{ + struct wireless_dev *wdev; + struct iwl_mld_sta *mld_sta; + struct iwl_mld_vif *mld_vif; + u8 keyidx; + struct ieee80211_key_conf *key; + const u8 *frame = (void *)hdr; + + if ((mpdu_status & IWL_RX_MPDU_STATUS_SEC_MASK) == + IWL_RX_MPDU_STATUS_SEC_NONE) + return 0; + + /* For non-beacon, we don't really care. But beacons may + * be filtered out, and we thus need the firmware's replay + * detection, otherwise beacons the firmware previously + * filtered could be replayed, or something like that, and + * it can filter a lot - though usually only if nothing has + * changed. + */ + if (!ieee80211_is_beacon(hdr->frame_control)) + return 0; + + if (!sta) + return -1; + + mld_sta = iwl_mld_sta_from_mac80211(sta); + mld_vif = iwl_mld_vif_from_mac80211(mld_sta->vif); + + /* key mismatch - will also report !MIC_OK but we shouldn't count it */ + if (!(mpdu_status & IWL_RX_MPDU_STATUS_KEY_VALID)) + goto report; + + /* good cases */ + if (likely(mpdu_status & IWL_RX_MPDU_STATUS_MIC_OK && + !(mpdu_status & IWL_RX_MPDU_STATUS_REPLAY_ERROR))) { + rx_status->flag |= RX_FLAG_DECRYPTED; + return 0; + } + + /* both keys will have the same cipher and MIC length, use + * whichever one is available + */ + key = rcu_dereference(mld_vif->bigtks[0]); + if (!key) { + key = rcu_dereference(mld_vif->bigtks[1]); + if (!key) + goto report; + } + + if (mpdu_len < key->icv_len + IEEE80211_GMAC_PN_LEN + KEY_IDX_LEN) + goto report; + + /* get the real key ID */ + keyidx = frame[mpdu_len - key->icv_len - IEEE80211_GMAC_PN_LEN - KEY_IDX_LEN]; + /* and if that's the other key, look it up */ + if (keyidx != key->keyidx) { + /* shouldn't happen since firmware checked, but be safe + * in case the MIC length is wrong too, for example + */ + if (keyidx != 6 && keyidx != 7) + return -1; + + key = rcu_dereference(mld_vif->bigtks[keyidx - 6]); + if (!key) + goto report; + } + + /* Report status to mac80211 */ + if (!(mpdu_status & IWL_RX_MPDU_STATUS_MIC_OK)) + ieee80211_key_mic_failure(key); + else if (mpdu_status & IWL_RX_MPDU_STATUS_REPLAY_ERROR) + ieee80211_key_replay(key); +report: + wdev = ieee80211_vif_to_wdev(mld_sta->vif); + if (wdev->netdev) + cfg80211_rx_unprot_mlme_mgmt(wdev->netdev, (void *)hdr, + mpdu_len); + + return -1; +} + +static int iwl_mld_rx_crypto(struct iwl_mld *mld, + struct ieee80211_sta *sta, + struct ieee80211_hdr *hdr, + struct ieee80211_rx_status *rx_status, + struct iwl_rx_mpdu_desc *desc, int queue, + u32 pkt_flags, u8 *crypto_len) +{ + u32 status = le32_to_cpu(desc->status); + + if (unlikely(ieee80211_is_mgmt(hdr->frame_control) && + !ieee80211_has_protected(hdr->frame_control))) + return iwl_mld_rx_mgmt_prot(sta, hdr, rx_status, status, + le16_to_cpu(desc->mpdu_len)); + + if (!ieee80211_has_protected(hdr->frame_control) || + (status & IWL_RX_MPDU_STATUS_SEC_MASK) == + IWL_RX_MPDU_STATUS_SEC_NONE) + return 0; + + switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) { + case IWL_RX_MPDU_STATUS_SEC_CCM: + case IWL_RX_MPDU_STATUS_SEC_GCM: + BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN); + if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) { + IWL_DEBUG_DROP(mld, + "Dropping packet, bad MIC (CCM/GCM)\n"); + return -1; + } + + rx_status->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MIC_STRIPPED; + *crypto_len = IEEE80211_CCMP_HDR_LEN; + return 0; + case IWL_RX_MPDU_STATUS_SEC_TKIP: + if (!(status & IWL_RX_MPDU_STATUS_ICV_OK)) + return -1; + + if (!(status & RX_MPDU_RES_STATUS_MIC_OK)) + rx_status->flag |= RX_FLAG_MMIC_ERROR; + + if (pkt_flags & FH_RSCSR_RADA_EN) { + rx_status->flag |= RX_FLAG_ICV_STRIPPED; + rx_status->flag |= RX_FLAG_MMIC_STRIPPED; + } + + *crypto_len = IEEE80211_TKIP_IV_LEN; + rx_status->flag |= RX_FLAG_DECRYPTED; + return 0; + default: + break; + } + + return 0; +} + +static void iwl_mld_rx_update_ampdu_ref(struct iwl_mld *mld, + struct iwl_mld_rx_phy_data *phy_data, + struct ieee80211_rx_status *rx_status) +{ + bool toggle_bit = + phy_data->phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE; + + rx_status->flag |= RX_FLAG_AMPDU_DETAILS; + /* Toggle is switched whenever new aggregation starts. Make + * sure ampdu_reference is never 0 so we can later use it to + * see if the frame was really part of an A-MPDU or not. + */ + if (toggle_bit != mld->monitor.ampdu_toggle) { + mld->monitor.ampdu_ref++; + if (mld->monitor.ampdu_ref == 0) + mld->monitor.ampdu_ref++; + mld->monitor.ampdu_toggle = toggle_bit; + phy_data->first_subframe = true; + } + rx_status->ampdu_reference = mld->monitor.ampdu_ref; +} + +static void +iwl_mld_fill_rx_status_band_freq(struct ieee80211_rx_status *rx_status, + u8 band, u8 channel) +{ + rx_status->band = iwl_mld_phy_band_to_nl80211(band); + rx_status->freq = ieee80211_channel_to_frequency(channel, + rx_status->band); +} + +void iwl_mld_rx_mpdu(struct iwl_mld *mld, struct napi_struct *napi, + struct iwl_rx_cmd_buffer *rxb, int queue) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct iwl_mld_rx_phy_data phy_data = {}; + struct iwl_rx_mpdu_desc *mpdu_desc = (void *)pkt->data; + struct ieee80211_sta *sta; + struct ieee80211_hdr *hdr; + struct sk_buff *skb; + size_t mpdu_desc_size = sizeof(*mpdu_desc); + bool drop = false; + u8 crypto_len = 0, band, link_id; + u32 pkt_len = iwl_rx_packet_payload_len(pkt); + u32 mpdu_len; + enum iwl_mld_reorder_result reorder_res; + struct ieee80211_rx_status *rx_status; + + if (unlikely(mld->fw_status.in_hw_restart)) + return; + + if (IWL_FW_CHECK(mld, pkt_len < mpdu_desc_size, + "Bad REPLY_RX_MPDU_CMD size (%d)\n", pkt_len)) + return; + + mpdu_len = le16_to_cpu(mpdu_desc->mpdu_len); + + if (IWL_FW_CHECK(mld, mpdu_len + mpdu_desc_size > pkt_len, + "FW lied about packet len (%d)\n", pkt_len)) + return; + + /* Don't use dev_alloc_skb(), we'll have enough headroom once + * ieee80211_hdr pulled. + */ + skb = alloc_skb(128, GFP_ATOMIC); + if (!skb) { + IWL_ERR(mld, "alloc_skb failed\n"); + return; + } + + hdr = (void *)(pkt->data + mpdu_desc_size); + + iwl_mld_fill_phy_data(mld, mpdu_desc, &phy_data); + + if (mpdu_desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) { + /* If the device inserted padding it means that (it thought) + * the 802.11 header wasn't a multiple of 4 bytes long. In + * this case, reserve two bytes at the start of the SKB to + * align the payload properly in case we end up copying it. + */ + skb_reserve(skb, 2); + } + + rx_status = IEEE80211_SKB_RXCB(skb); + + /* this is needed early */ + band = u8_get_bits(mpdu_desc->mac_phy_band, + IWL_RX_MPDU_MAC_PHY_BAND_BAND_MASK); + iwl_mld_fill_rx_status_band_freq(rx_status, band, + mpdu_desc->v3.channel); + + + rcu_read_lock(); + + sta = iwl_mld_rx_with_sta(mld, hdr, skb, mpdu_desc, pkt, queue, &drop); + if (drop) + goto drop; + + /* update aggregation data for monitor sake on default queue */ + if (!queue && (phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU)) + iwl_mld_rx_update_ampdu_ref(mld, &phy_data, rx_status); + + /* Keep packets with CRC errors (and with overrun) for monitor mode + * (otherwise the firmware discards them) but mark them as bad. + */ + if (!(mpdu_desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_CRC_OK)) || + !(mpdu_desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) { + IWL_DEBUG_RX(mld, "Bad CRC or FIFO: 0x%08X.\n", + le32_to_cpu(mpdu_desc->status)); + rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; + } + + if (likely(!(phy_data.phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) { + rx_status->mactime = + le64_to_cpu(mpdu_desc->v3.tsf_on_air_rise); + + /* TSF as indicated by the firmware is at INA time */ + rx_status->flag |= RX_FLAG_MACTIME_PLCP_START; + } + + /* management stuff on default queue */ + if (!queue && unlikely(ieee80211_is_beacon(hdr->frame_control) || + ieee80211_is_probe_resp(hdr->frame_control))) { + rx_status->boottime_ns = ktime_get_boottime_ns(); + + if (mld->scan.pass_all_sched_res == + SCHED_SCAN_PASS_ALL_STATE_ENABLED) + mld->scan.pass_all_sched_res = + SCHED_SCAN_PASS_ALL_STATE_FOUND; + } + + link_id = u8_get_bits(mpdu_desc->mac_phy_band, + IWL_RX_MPDU_MAC_PHY_BAND_LINK_MASK); + + iwl_mld_rx_fill_status(mld, link_id, hdr, skb, &phy_data, queue); + + if (iwl_mld_rx_crypto(mld, sta, hdr, rx_status, mpdu_desc, queue, + le32_to_cpu(pkt->len_n_flags), &crypto_len)) + goto drop; + + if (iwl_mld_build_rx_skb(mld, skb, hdr, mpdu_len, crypto_len, rxb)) + goto drop; + + /* time sync frame is saved and will be released later when the + * notification with the timestamps arrives. + */ + if (iwl_mld_time_sync_frame(mld, skb, hdr->addr2)) + goto out; + + reorder_res = iwl_mld_reorder(mld, napi, queue, sta, skb, mpdu_desc); + switch (reorder_res) { + case IWL_MLD_PASS_SKB: + break; + case IWL_MLD_DROP_SKB: + goto drop; + case IWL_MLD_BUFFERED_SKB: + goto out; + default: + WARN_ON(1); + goto drop; + } + + iwl_mld_pass_packet_to_mac80211(mld, napi, skb, queue, sta); + + goto out; + +drop: + kfree_skb(skb); +out: + rcu_read_unlock(); +} + +#define SYNC_RX_QUEUE_TIMEOUT (HZ) +void iwl_mld_sync_rx_queues(struct iwl_mld *mld, + enum iwl_mld_internal_rxq_notif_type type, + const void *notif_payload, u32 notif_payload_size) +{ + u8 num_rx_queues = mld->trans->info.num_rxqs; + struct { + struct iwl_rxq_sync_cmd sync_cmd; + struct iwl_mld_internal_rxq_notif notif; + } __packed cmd = { + .sync_cmd.rxq_mask = cpu_to_le32(BIT(num_rx_queues) - 1), + .sync_cmd.count = + cpu_to_le32(sizeof(struct iwl_mld_internal_rxq_notif) + + notif_payload_size), + .notif.type = type, + .notif.cookie = mld->rxq_sync.cookie, + }; + struct iwl_host_cmd hcmd = { + .id = WIDE_ID(DATA_PATH_GROUP, TRIGGER_RX_QUEUES_NOTIF_CMD), + .data[0] = &cmd, + .len[0] = sizeof(cmd), + .data[1] = notif_payload, + .len[1] = notif_payload_size, + }; + int ret; + + /* size must be a multiple of DWORD */ + if (WARN_ON(cmd.sync_cmd.count & cpu_to_le32(3))) + return; + + mld->rxq_sync.state = (1 << num_rx_queues) - 1; + + ret = iwl_mld_send_cmd(mld, &hcmd); + if (ret) { + IWL_ERR(mld, "Failed to trigger RX queues sync (%d)\n", ret); + goto out; + } + + ret = wait_event_timeout(mld->rxq_sync.waitq, + READ_ONCE(mld->rxq_sync.state) == 0, + SYNC_RX_QUEUE_TIMEOUT); + WARN_ONCE(!ret, "RXQ sync failed: state=0x%lx, cookie=%d\n", + mld->rxq_sync.state, mld->rxq_sync.cookie); + +out: + mld->rxq_sync.state = 0; + mld->rxq_sync.cookie++; +} + +void iwl_mld_handle_rx_queues_sync_notif(struct iwl_mld *mld, + struct napi_struct *napi, + struct iwl_rx_packet *pkt, int queue) +{ + struct iwl_rxq_sync_notification *notif; + struct iwl_mld_internal_rxq_notif *internal_notif; + u32 len = iwl_rx_packet_payload_len(pkt); + size_t combined_notif_len = sizeof(*notif) + sizeof(*internal_notif); + + notif = (void *)pkt->data; + internal_notif = (void *)notif->payload; + + if (IWL_FW_CHECK(mld, len < combined_notif_len, + "invalid notification size %u (%zu)\n", + len, combined_notif_len)) + return; + + len -= combined_notif_len; + + if (IWL_FW_CHECK(mld, mld->rxq_sync.cookie != internal_notif->cookie, + "received expired RX queue sync message (cookie=%d expected=%d q[%d])\n", + internal_notif->cookie, mld->rxq_sync.cookie, queue)) + return; + + switch (internal_notif->type) { + case IWL_MLD_RXQ_EMPTY: + IWL_FW_CHECK(mld, len, + "invalid empty notification size %d\n", len); + break; + case IWL_MLD_RXQ_NOTIF_DEL_BA: + if (IWL_FW_CHECK(mld, len != sizeof(struct iwl_mld_delba_data), + "invalid delba notification size %u (%zu)\n", + len, sizeof(struct iwl_mld_delba_data))) + break; + iwl_mld_del_ba(mld, queue, (void *)internal_notif->payload); + break; + default: + WARN_ON_ONCE(1); + } + + IWL_FW_CHECK(mld, !test_and_clear_bit(queue, &mld->rxq_sync.state), + "RXQ sync: queue %d responded a second time!\n", queue); + + if (READ_ONCE(mld->rxq_sync.state) == 0) + wake_up(&mld->rxq_sync.waitq); +} + +void iwl_mld_rx_monitor_no_data(struct iwl_mld *mld, struct napi_struct *napi, + struct iwl_rx_packet *pkt, int queue) +{ + struct iwl_rx_no_data_ver_3 *desc; + struct iwl_mld_rx_phy_data phy_data; + struct ieee80211_rx_status *rx_status; + struct sk_buff *skb; + u32 format, rssi; + u8 channel; + + if (unlikely(mld->fw_status.in_hw_restart)) + return; + + if (IWL_FW_CHECK(mld, iwl_rx_packet_payload_len(pkt) < sizeof(*desc), + "Bad RX_NO_DATA_NOTIF size (%d)\n", + iwl_rx_packet_payload_len(pkt))) + return; + + desc = (void *)pkt->data; + + rssi = le32_to_cpu(desc->rssi); + channel = u32_get_bits(rssi, RX_NO_DATA_CHANNEL_MSK); + + phy_data.energy_a = u32_get_bits(rssi, RX_NO_DATA_CHAIN_A_MSK); + phy_data.energy_b = u32_get_bits(rssi, RX_NO_DATA_CHAIN_B_MSK); + phy_data.data0 = desc->phy_info[0]; + phy_data.data1 = desc->phy_info[1]; + phy_data.phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD; + phy_data.gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time); + phy_data.rate_n_flags = iwl_v3_rate_from_v2_v3(desc->rate, + mld->fw_rates_ver_3); + phy_data.with_data = false; + + BUILD_BUG_ON(sizeof(phy_data.rx_vec) != sizeof(desc->rx_vec)); + memcpy(phy_data.rx_vec, desc->rx_vec, sizeof(phy_data.rx_vec)); + + format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK; + + /* Don't use dev_alloc_skb(), we'll have enough headroom once + * ieee80211_hdr pulled. + */ + skb = alloc_skb(128, GFP_ATOMIC); + if (!skb) { + IWL_ERR(mld, "alloc_skb failed\n"); + return; + } + + rx_status = IEEE80211_SKB_RXCB(skb); + + /* 0-length PSDU */ + rx_status->flag |= RX_FLAG_NO_PSDU; + + /* mark as failed PLCP on any errors to skip checks in mac80211 */ + if (le32_get_bits(desc->info, RX_NO_DATA_INFO_ERR_MSK) != + RX_NO_DATA_INFO_ERR_NONE) + rx_status->flag |= RX_FLAG_FAILED_PLCP_CRC; + + switch (le32_get_bits(desc->info, RX_NO_DATA_INFO_TYPE_MSK)) { + case RX_NO_DATA_INFO_TYPE_NDP: + rx_status->zero_length_psdu_type = + IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING; + break; + case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED: + case RX_NO_DATA_INFO_TYPE_TB_UNMATCHED: + rx_status->zero_length_psdu_type = + IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED; + break; + default: + rx_status->zero_length_psdu_type = + IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR; + break; + } + + rx_status->band = channel > 14 ? NL80211_BAND_5GHZ : + NL80211_BAND_2GHZ; + + rx_status->freq = ieee80211_channel_to_frequency(channel, + rx_status->band); + + /* link ID is ignored for NULL header */ + iwl_mld_rx_fill_status(mld, -1, NULL, skb, &phy_data, queue); + + /* No more radiotap info should be added after this point. + * Mark it as mac header for upper layers to know where + * the radiotap header ends. + */ + skb_set_mac_header(skb, skb->len); + + /* Override the nss from the rx_vec since the rate_n_flags has + * only 1 bit for the nss which gives a max of 2 ss but there + * may be up to 8 spatial streams. + */ + switch (format) { + case RATE_MCS_MOD_TYPE_VHT: + rx_status->nss = + le32_get_bits(desc->rx_vec[0], + RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1; + break; + case RATE_MCS_MOD_TYPE_HE: + rx_status->nss = + le32_get_bits(desc->rx_vec[0], + RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1; + break; + case RATE_MCS_MOD_TYPE_EHT: + rx_status->nss = + le32_get_bits(desc->rx_vec[2], + RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK) + 1; + } + + /* pass the packet to mac80211 */ + rcu_read_lock(); + ieee80211_rx_napi(mld->hw, NULL, skb, napi); + rcu_read_unlock(); +} |