1 files changed, 702 insertions, 0 deletions

diff --git a/sys/contrib/dev/iwlwifi/mld/tlc.c b/sys/contrib/dev/iwlwifi/mld/tlc.c
new file mode 100644
index 000000000000..a9ca92c0455e
--- /dev/null
+++ b/sys/contrib/dev/iwlwifi/mld/tlc.c
@@ -0,0 +1,702 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Copyright (C) 2024-2025 Intel Corporation
+ */
+
+#include <net/mac80211.h>
+
+#include "tlc.h"
+#include "hcmd.h"
+#include "sta.h"
+
+#include "fw/api/rs.h"
+#include "fw/api/context.h"
+#include "fw/api/dhc.h"
+
+static u8 iwl_mld_fw_bw_from_sta_bw(const struct ieee80211_link_sta *link_sta)
+{
+	switch (link_sta->bandwidth) {
+	case IEEE80211_STA_RX_BW_320:
+		return IWL_TLC_MNG_CH_WIDTH_320MHZ;
+	case IEEE80211_STA_RX_BW_160:
+		return IWL_TLC_MNG_CH_WIDTH_160MHZ;
+	case IEEE80211_STA_RX_BW_80:
+		return IWL_TLC_MNG_CH_WIDTH_80MHZ;
+	case IEEE80211_STA_RX_BW_40:
+		return IWL_TLC_MNG_CH_WIDTH_40MHZ;
+	case IEEE80211_STA_RX_BW_20:
+	default:
+		return IWL_TLC_MNG_CH_WIDTH_20MHZ;
+	}
+}
+
+static __le16
+iwl_mld_get_tlc_cmd_flags(struct iwl_mld *mld,
+			  struct ieee80211_vif *vif,
+			  struct ieee80211_link_sta *link_sta,
+			  const struct ieee80211_sta_he_cap *own_he_cap,
+			  const struct ieee80211_sta_eht_cap *own_eht_cap)
+{
+	struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap;
+	struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap;
+	struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap;
+	bool has_vht = vht_cap->vht_supported;
+	u16 flags = 0;
+
+	/* STBC flags */
+	if (mld->cfg->ht_params.stbc &&
+	    (hweight8(iwl_mld_get_valid_tx_ant(mld)) > 1)) {
+		if (he_cap->has_he && he_cap->he_cap_elem.phy_cap_info[2] &
+				      IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ)
+			flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
+		else if (vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK)
+			flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
+		else if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC)
+			flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
+	}
+
+	/* LDPC */
+	if (mld->cfg->ht_params.ldpc &&
+	    ((ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING) ||
+	     (has_vht && (vht_cap->cap & IEEE80211_VHT_CAP_RXLDPC))))
+		flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
+
+	if (he_cap->has_he && (he_cap->he_cap_elem.phy_cap_info[1] &
+	    IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
+		flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
+
+	if (own_he_cap &&
+	    !(own_he_cap->he_cap_elem.phy_cap_info[1] &
+			IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
+		flags &= ~IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
+
+	/* DCM */
+	if (he_cap->has_he &&
+	    (he_cap->he_cap_elem.phy_cap_info[3] &
+	     IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK &&
+	     own_he_cap &&
+	     own_he_cap->he_cap_elem.phy_cap_info[3] &
+			IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK))
+		flags |= IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_1_MSK;
+
+	/* Extra EHT LTF */
+	if (own_eht_cap &&
+	    own_eht_cap->eht_cap_elem.phy_cap_info[5] &
+		IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF &&
+	    link_sta->eht_cap.has_eht &&
+	    link_sta->eht_cap.eht_cap_elem.phy_cap_info[5] &
+	    IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF) {
+		flags |= IWL_TLC_MNG_CFG_FLAGS_EHT_EXTRA_LTF_MSK;
+	}
+
+	return cpu_to_le16(flags);
+}
+
+static u8 iwl_mld_get_fw_chains(struct iwl_mld *mld)
+{
+	u8 chains = iwl_mld_get_valid_tx_ant(mld);
+	u8 fw_chains = 0;
+
+	if (chains & ANT_A)
+		fw_chains |= IWL_TLC_MNG_CHAIN_A_MSK;
+	if (chains & ANT_B)
+		fw_chains |= IWL_TLC_MNG_CHAIN_B_MSK;
+
+	return fw_chains;
+}
+
+static u8 iwl_mld_get_fw_sgi(struct ieee80211_link_sta *link_sta)
+{
+	struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap;
+	struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap;
+	struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap;
+	u8 sgi_chwidths = 0;
+
+	/* If the association supports HE, HT/VHT rates will never be used for
+	 * Tx and therefor there's no need to set the
+	 * sgi-per-channel-width-support bits
+	 */
+	if (he_cap->has_he)
+		return 0;
+
+	if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
+		sgi_chwidths |= BIT(IWL_TLC_MNG_CH_WIDTH_20MHZ);
+	if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
+		sgi_chwidths |= BIT(IWL_TLC_MNG_CH_WIDTH_40MHZ);
+	if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_80)
+		sgi_chwidths |= BIT(IWL_TLC_MNG_CH_WIDTH_80MHZ);
+	if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_160)
+		sgi_chwidths |= BIT(IWL_TLC_MNG_CH_WIDTH_160MHZ);
+
+	return sgi_chwidths;
+}
+
+static int
+iwl_mld_get_highest_fw_mcs(const struct ieee80211_sta_vht_cap *vht_cap,
+			   int nss)
+{
+	u16 rx_mcs = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map) &
+		(0x3 << (2 * (nss - 1)));
+	rx_mcs >>= (2 * (nss - 1));
+
+	switch (rx_mcs) {
+	case IEEE80211_VHT_MCS_SUPPORT_0_7:
+		return IWL_TLC_MNG_HT_RATE_MCS7;
+	case IEEE80211_VHT_MCS_SUPPORT_0_8:
+		return IWL_TLC_MNG_HT_RATE_MCS8;
+	case IEEE80211_VHT_MCS_SUPPORT_0_9:
+		return IWL_TLC_MNG_HT_RATE_MCS9;
+	default:
+		WARN_ON_ONCE(1);
+		break;
+	}
+
+	return 0;
+}
+
+static void
+iwl_mld_fill_vht_rates(const struct ieee80211_link_sta *link_sta,
+		       const struct ieee80211_sta_vht_cap *vht_cap,
+		       struct iwl_tlc_config_cmd_v4 *cmd)
+{
+	u16 supp;
+	int i, highest_mcs;
+	u8 max_nss = link_sta->rx_nss;
+	struct ieee80211_vht_cap ieee_vht_cap = {
+		.vht_cap_info = cpu_to_le32(vht_cap->cap),
+		.supp_mcs = vht_cap->vht_mcs,
+	};
+
+	/* the station support only a single receive chain */
+	if (link_sta->smps_mode == IEEE80211_SMPS_STATIC)
+		max_nss = 1;
+
+	for (i = 0; i < max_nss && i < IWL_TLC_NSS_MAX; i++) {
+		int nss = i + 1;
+
+		highest_mcs = iwl_mld_get_highest_fw_mcs(vht_cap, nss);
+		if (!highest_mcs)
+			continue;
+
+		supp = BIT(highest_mcs + 1) - 1;
+		if (link_sta->bandwidth == IEEE80211_STA_RX_BW_20)
+			supp &= ~BIT(IWL_TLC_MNG_HT_RATE_MCS9);
+
+		cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80] = cpu_to_le16(supp);
+		/* Check if VHT extended NSS indicates that the bandwidth/NSS
+		 * configuration is supported - only for MCS 0 since we already
+		 * decoded the MCS bits anyway ourselves.
+		 */
+		if (link_sta->bandwidth == IEEE80211_STA_RX_BW_160 &&
+		    ieee80211_get_vht_max_nss(&ieee_vht_cap,
+					      IEEE80211_VHT_CHANWIDTH_160MHZ,
+					      0, true, nss) >= nss)
+			cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_160] =
+				cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80];
+	}
+}
+
+static u16 iwl_mld_he_mac80211_mcs_to_fw_mcs(u16 mcs)
+{
+	switch (mcs) {
+	case IEEE80211_HE_MCS_SUPPORT_0_7:
+		return BIT(IWL_TLC_MNG_HT_RATE_MCS7 + 1) - 1;
+	case IEEE80211_HE_MCS_SUPPORT_0_9:
+		return BIT(IWL_TLC_MNG_HT_RATE_MCS9 + 1) - 1;
+	case IEEE80211_HE_MCS_SUPPORT_0_11:
+		return BIT(IWL_TLC_MNG_HT_RATE_MCS11 + 1) - 1;
+	case IEEE80211_HE_MCS_NOT_SUPPORTED:
+		return 0;
+	}
+
+	WARN(1, "invalid HE MCS %d\n", mcs);
+	return 0;
+}
+
+static void
+iwl_mld_fill_he_rates(const struct ieee80211_link_sta *link_sta,
+		      const struct ieee80211_sta_he_cap *own_he_cap,
+		      struct iwl_tlc_config_cmd_v4 *cmd)
+{
+	const struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap;
+	u16 mcs_160 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
+	u16 mcs_80 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80);
+	u16 tx_mcs_80 = le16_to_cpu(own_he_cap->he_mcs_nss_supp.tx_mcs_80);
+	u16 tx_mcs_160 = le16_to_cpu(own_he_cap->he_mcs_nss_supp.tx_mcs_160);
+	int i;
+	u8 nss = link_sta->rx_nss;
+
+	/* the station support only a single receive chain */
+	if (link_sta->smps_mode == IEEE80211_SMPS_STATIC)
+		nss = 1;
+
+	for (i = 0; i < nss && i < IWL_TLC_NSS_MAX; i++) {
+		u16 _mcs_160 = (mcs_160 >> (2 * i)) & 0x3;
+		u16 _mcs_80 = (mcs_80 >> (2 * i)) & 0x3;
+		u16 _tx_mcs_160 = (tx_mcs_160 >> (2 * i)) & 0x3;
+		u16 _tx_mcs_80 = (tx_mcs_80 >> (2 * i)) & 0x3;
+
+		/* If one side doesn't support - mark both as not supporting */
+		if (_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
+		    _tx_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
+			_mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
+			_tx_mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
+		}
+		if (_mcs_80 > _tx_mcs_80)
+			_mcs_80 = _tx_mcs_80;
+		cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80] =
+			cpu_to_le16(iwl_mld_he_mac80211_mcs_to_fw_mcs(_mcs_80));
+
+		/* If one side doesn't support - mark both as not supporting */
+		if (_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
+		    _tx_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
+			_mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
+			_tx_mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
+		}
+		if (_mcs_160 > _tx_mcs_160)
+			_mcs_160 = _tx_mcs_160;
+		cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_160] =
+			cpu_to_le16(iwl_mld_he_mac80211_mcs_to_fw_mcs(_mcs_160));
+	}
+}
+
+static void iwl_mld_set_eht_mcs(__le16 ht_rates[][3],
+				enum IWL_TLC_MCS_PER_BW bw,
+				u8 max_nss, u16 mcs_msk)
+{
+	if (max_nss >= 2)
+		ht_rates[IWL_TLC_NSS_2][bw] |= cpu_to_le16(mcs_msk);
+
+	if (max_nss >= 1)
+		ht_rates[IWL_TLC_NSS_1][bw] |= cpu_to_le16(mcs_msk);
+}
+
+static const
+struct ieee80211_eht_mcs_nss_supp_bw *
+iwl_mld_get_eht_mcs_of_bw(enum IWL_TLC_MCS_PER_BW bw,
+			  const struct ieee80211_eht_mcs_nss_supp *eht_mcs)
+{
+	switch (bw) {
+	case IWL_TLC_MCS_PER_BW_80:
+		return &eht_mcs->bw._80;
+	case IWL_TLC_MCS_PER_BW_160:
+		return &eht_mcs->bw._160;
+	case IWL_TLC_MCS_PER_BW_320:
+		return &eht_mcs->bw._320;
+	default:
+		return NULL;
+	}
+}
+
+static u8 iwl_mld_get_eht_max_nss(u8 rx_nss, u8 tx_nss)
+{
+	u8 tx = u8_get_bits(tx_nss, IEEE80211_EHT_MCS_NSS_TX);
+	u8 rx = u8_get_bits(rx_nss, IEEE80211_EHT_MCS_NSS_RX);
+	/* the max nss that can be used,
+	 * is the min with our tx capa and the peer rx capa.
+	 */
+	return min(tx, rx);
+}
+
+#define MAX_NSS_MCS(mcs_num, rx, tx) \
+	iwl_mld_get_eht_max_nss((rx)->rx_tx_mcs ##mcs_num## _max_nss, \
+				(tx)->rx_tx_mcs ##mcs_num## _max_nss)
+
+static void
+iwl_mld_fill_eht_rates(struct ieee80211_vif *vif,
+		       const struct ieee80211_link_sta *link_sta,
+		       const struct ieee80211_sta_he_cap *own_he_cap,
+		       const struct ieee80211_sta_eht_cap *own_eht_cap,
+		       struct iwl_tlc_config_cmd_v4 *cmd)
+{
+	/* peer RX mcs capa */
+	const struct ieee80211_eht_mcs_nss_supp *eht_rx_mcs =
+		&link_sta->eht_cap.eht_mcs_nss_supp;
+	/* our TX mcs capa */
+	const struct ieee80211_eht_mcs_nss_supp *eht_tx_mcs =
+		&own_eht_cap->eht_mcs_nss_supp;
+
+	enum IWL_TLC_MCS_PER_BW bw;
+	struct ieee80211_eht_mcs_nss_supp_20mhz_only mcs_rx_20;
+	struct ieee80211_eht_mcs_nss_supp_20mhz_only mcs_tx_20;
+
+	/* peer is 20 MHz only */
+	if (vif->type == NL80211_IFTYPE_AP &&
+	    !(link_sta->he_cap.he_cap_elem.phy_cap_info[0] &
+	      IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) {
+		mcs_rx_20 = eht_rx_mcs->only_20mhz;
+	} else {
+		mcs_rx_20.rx_tx_mcs7_max_nss =
+			eht_rx_mcs->bw._80.rx_tx_mcs9_max_nss;
+		mcs_rx_20.rx_tx_mcs9_max_nss =
+			eht_rx_mcs->bw._80.rx_tx_mcs9_max_nss;
+		mcs_rx_20.rx_tx_mcs11_max_nss =
+			eht_rx_mcs->bw._80.rx_tx_mcs11_max_nss;
+		mcs_rx_20.rx_tx_mcs13_max_nss =
+			eht_rx_mcs->bw._80.rx_tx_mcs13_max_nss;
+	}
+
+	/* NIC is capable of 20 MHz only */
+	if (!(own_he_cap->he_cap_elem.phy_cap_info[0] &
+	      IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) {
+		mcs_tx_20 = eht_tx_mcs->only_20mhz;
+	} else {
+		mcs_tx_20.rx_tx_mcs7_max_nss =
+			eht_tx_mcs->bw._80.rx_tx_mcs9_max_nss;
+		mcs_tx_20.rx_tx_mcs9_max_nss =
+			eht_tx_mcs->bw._80.rx_tx_mcs9_max_nss;
+		mcs_tx_20.rx_tx_mcs11_max_nss =
+			eht_tx_mcs->bw._80.rx_tx_mcs11_max_nss;
+		mcs_tx_20.rx_tx_mcs13_max_nss =
+			eht_tx_mcs->bw._80.rx_tx_mcs13_max_nss;
+	}
+
+	/* rates for 20/40/80 MHz */
+	bw = IWL_TLC_MCS_PER_BW_80;
+	iwl_mld_set_eht_mcs(cmd->ht_rates, bw,
+			    MAX_NSS_MCS(7, &mcs_rx_20, &mcs_tx_20),
+			    GENMASK(7, 0));
+	iwl_mld_set_eht_mcs(cmd->ht_rates, bw,
+			    MAX_NSS_MCS(9, &mcs_rx_20, &mcs_tx_20),
+			    GENMASK(9, 8));
+	iwl_mld_set_eht_mcs(cmd->ht_rates, bw,
+			    MAX_NSS_MCS(11, &mcs_rx_20, &mcs_tx_20),
+			    GENMASK(11, 10));
+	iwl_mld_set_eht_mcs(cmd->ht_rates, bw,
+			    MAX_NSS_MCS(13, &mcs_rx_20, &mcs_tx_20),
+			    GENMASK(13, 12));
+
+	/* rates for 160/320 MHz */
+	for (bw = IWL_TLC_MCS_PER_BW_160; bw <= IWL_TLC_MCS_PER_BW_320; bw++) {
+		const struct ieee80211_eht_mcs_nss_supp_bw *mcs_rx =
+			iwl_mld_get_eht_mcs_of_bw(bw, eht_rx_mcs);
+		const struct ieee80211_eht_mcs_nss_supp_bw *mcs_tx =
+			iwl_mld_get_eht_mcs_of_bw(bw, eht_tx_mcs);
+
+		/* got unsupported index for bw */
+		if (!mcs_rx || !mcs_tx)
+			continue;
+
+		/* break out if we don't support the bandwidth */
+		if (cmd->max_ch_width < (bw + IWL_TLC_MNG_CH_WIDTH_80MHZ))
+			break;
+
+		iwl_mld_set_eht_mcs(cmd->ht_rates, bw,
+				    MAX_NSS_MCS(9, mcs_rx, mcs_tx),
+				    GENMASK(9, 0));
+		iwl_mld_set_eht_mcs(cmd->ht_rates, bw,
+				    MAX_NSS_MCS(11, mcs_rx, mcs_tx),
+				    GENMASK(11, 10));
+		iwl_mld_set_eht_mcs(cmd->ht_rates, bw,
+				    MAX_NSS_MCS(13, mcs_rx, mcs_tx),
+				    GENMASK(13, 12));
+	}
+
+	/* the station support only a single receive chain */
+	if (link_sta->smps_mode == IEEE80211_SMPS_STATIC ||
+	    link_sta->rx_nss < 2)
+		memset(cmd->ht_rates[IWL_TLC_NSS_2], 0,
+		       sizeof(cmd->ht_rates[IWL_TLC_NSS_2]));
+}
+
+static void
+iwl_mld_fill_supp_rates(struct iwl_mld *mld, struct ieee80211_vif *vif,
+			struct ieee80211_link_sta *link_sta,
+			struct ieee80211_supported_band *sband,
+			const struct ieee80211_sta_he_cap *own_he_cap,
+			const struct ieee80211_sta_eht_cap *own_eht_cap,
+			struct iwl_tlc_config_cmd_v4 *cmd)
+{
+	int i;
+	u16 non_ht_rates = 0;
+	unsigned long rates_bitmap;
+	const struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap;
+	const struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap;
+	const struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap;
+
+	/* non HT rates */
+	rates_bitmap = link_sta->supp_rates[sband->band];
+	for_each_set_bit(i, &rates_bitmap, BITS_PER_LONG)
+		non_ht_rates |= BIT(sband->bitrates[i].hw_value);
+
+	cmd->non_ht_rates = cpu_to_le16(non_ht_rates);
+	cmd->mode = IWL_TLC_MNG_MODE_NON_HT;
+
+	if (link_sta->eht_cap.has_eht && own_he_cap && own_eht_cap) {
+		cmd->mode = IWL_TLC_MNG_MODE_EHT;
+		iwl_mld_fill_eht_rates(vif, link_sta, own_he_cap,
+				       own_eht_cap, cmd);
+	} else if (he_cap->has_he && own_he_cap) {
+		cmd->mode = IWL_TLC_MNG_MODE_HE;
+		iwl_mld_fill_he_rates(link_sta, own_he_cap, cmd);
+	} else if (vht_cap->vht_supported) {
+		cmd->mode = IWL_TLC_MNG_MODE_VHT;
+		iwl_mld_fill_vht_rates(link_sta, vht_cap, cmd);
+	} else if (ht_cap->ht_supported) {
+		cmd->mode = IWL_TLC_MNG_MODE_HT;
+		cmd->ht_rates[IWL_TLC_NSS_1][IWL_TLC_MCS_PER_BW_80] =
+			cpu_to_le16(ht_cap->mcs.rx_mask[0]);
+
+		/* the station support only a single receive chain */
+		if (link_sta->smps_mode == IEEE80211_SMPS_STATIC)
+			cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_MCS_PER_BW_80] =
+				0;
+		else
+			cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_MCS_PER_BW_80] =
+				cpu_to_le16(ht_cap->mcs.rx_mask[1]);
+	}
+}
+
+static void iwl_mld_send_tlc_cmd(struct iwl_mld *mld,
+				 struct ieee80211_vif *vif,
+				 struct ieee80211_link_sta *link_sta,
+				 enum nl80211_band band)
+{
+	struct iwl_mld_sta *mld_sta = iwl_mld_sta_from_mac80211(link_sta->sta);
+	struct ieee80211_supported_band *sband = mld->hw->wiphy->bands[band];
+	const struct ieee80211_sta_he_cap *own_he_cap =
+		ieee80211_get_he_iftype_cap_vif(sband, vif);
+	const struct ieee80211_sta_eht_cap *own_eht_cap =
+		ieee80211_get_eht_iftype_cap_vif(sband, vif);
+	struct iwl_tlc_config_cmd_v4 cmd = {
+		/* For AP mode, use 20 MHz until the STA is authorized */
+		.max_ch_width = mld_sta->sta_state > IEEE80211_STA_ASSOC ?
+			iwl_mld_fw_bw_from_sta_bw(link_sta) :
+			IWL_TLC_MNG_CH_WIDTH_20MHZ,
+		.flags = iwl_mld_get_tlc_cmd_flags(mld, vif, link_sta,
+						   own_he_cap, own_eht_cap),
+		.chains = iwl_mld_get_fw_chains(mld),
+		.sgi_ch_width_supp = iwl_mld_get_fw_sgi(link_sta),
+		.max_mpdu_len = cpu_to_le16(link_sta->agg.max_amsdu_len),
+	};
+	int fw_sta_id = iwl_mld_fw_sta_id_from_link_sta(mld, link_sta);
+	int ret;
+
+	if (fw_sta_id < 0)
+		return;
+
+	cmd.sta_id = fw_sta_id;
+
+	iwl_mld_fill_supp_rates(mld, vif, link_sta, sband,
+				own_he_cap, own_eht_cap,
+				&cmd);
+
+	IWL_DEBUG_RATE(mld,
+		       "TLC CONFIG CMD, sta_id=%d, max_ch_width=%d, mode=%d\n",
+		       cmd.sta_id, cmd.max_ch_width, cmd.mode);
+
+	/* Send async since this can be called within a RCU-read section */
+	ret = iwl_mld_send_cmd_with_flags_pdu(mld, WIDE_ID(DATA_PATH_GROUP,
+							   TLC_MNG_CONFIG_CMD),
+					      CMD_ASYNC, &cmd);
+	if (ret)
+		IWL_ERR(mld, "Failed to send TLC cmd (%d)\n", ret);
+}
+
+int iwl_mld_send_tlc_dhc(struct iwl_mld *mld, u8 sta_id, u32 type, u32 data)
+{
+	struct {
+		struct iwl_dhc_cmd dhc;
+		struct iwl_dhc_tlc_cmd tlc;
+	} __packed cmd = {
+		.tlc.sta_id = sta_id,
+		.tlc.type = cpu_to_le32(type),
+		.tlc.data[0] = cpu_to_le32(data),
+		.dhc.length = cpu_to_le32(sizeof(cmd.tlc) >> 2),
+		.dhc.index_and_mask =
+			cpu_to_le32(DHC_TABLE_INTEGRATION | DHC_TARGET_UMAC |
+				    DHC_INTEGRATION_TLC_DEBUG_CONFIG),
+	};
+	int ret;
+
+	ret = iwl_mld_send_cmd_with_flags_pdu(mld,
+					      WIDE_ID(IWL_ALWAYS_LONG_GROUP,
+						      DEBUG_HOST_COMMAND),
+					      CMD_ASYNC, &cmd);
+	IWL_DEBUG_RATE(mld, "sta_id %d, type: 0x%X, value: 0x%X, ret%d\n",
+		       sta_id, type, data, ret);
+	return ret;
+}
+
+void iwl_mld_config_tlc_link(struct iwl_mld *mld,
+			     struct ieee80211_vif *vif,
+			     struct ieee80211_bss_conf *link_conf,
+			     struct ieee80211_link_sta *link_sta)
+{
+	struct iwl_mld_sta *mld_sta = iwl_mld_sta_from_mac80211(link_sta->sta);
+	enum nl80211_band band;
+
+	if (WARN_ON_ONCE(!link_conf->chanreq.oper.chan))
+		return;
+
+	/* Before we have information about a station, configure the A-MSDU RC
+	 * limit such that iwlmd and mac80211 would not be allowed to build
+	 * A-MSDUs.
+	 */
+	if (mld_sta->sta_state < IEEE80211_STA_ASSOC) {
+		link_sta->agg.max_rc_amsdu_len = 1;
+		ieee80211_sta_recalc_aggregates(link_sta->sta);
+	}
+
+	band = link_conf->chanreq.oper.chan->band;
+	iwl_mld_send_tlc_cmd(mld, vif, link_sta, band);
+}
+
+void iwl_mld_config_tlc(struct iwl_mld *mld, struct ieee80211_vif *vif,
+			struct ieee80211_sta *sta)
+{
+	struct ieee80211_bss_conf *link;
+	int link_id;
+
+	lockdep_assert_wiphy(mld->wiphy);
+
+	for_each_vif_active_link(vif, link, link_id) {
+		struct ieee80211_link_sta *link_sta =
+			link_sta_dereference_check(sta, link_id);
+
+		if (!link || !link_sta)
+			continue;
+
+		iwl_mld_config_tlc_link(mld, vif, link, link_sta);
+	}
+}
+
+static u16
+iwl_mld_get_amsdu_size_of_tid(struct iwl_mld *mld,
+			      struct ieee80211_link_sta *link_sta,
+			      unsigned int tid)
+{
+	struct ieee80211_sta *sta = link_sta->sta;
+	struct ieee80211_vif *vif = iwl_mld_sta_from_mac80211(sta)->vif;
+	const u8 tid_to_mac80211_ac[] = {
+		IEEE80211_AC_BE,
+		IEEE80211_AC_BK,
+		IEEE80211_AC_BK,
+		IEEE80211_AC_BE,
+		IEEE80211_AC_VI,
+		IEEE80211_AC_VI,
+		IEEE80211_AC_VO,
+		IEEE80211_AC_VO,
+	};
+	unsigned int result = link_sta->agg.max_rc_amsdu_len;
+	u8 ac, txf, lmac;
+
+	lockdep_assert_wiphy(mld->wiphy);
+
+	/* Don't send an AMSDU that will be longer than the TXF.
+	 * Add a security margin of 256 for the TX command + headers.
+	 * We also want to have the start of the next packet inside the
+	 * fifo to be able to send bursts.
+	 */
+
+	if (WARN_ON(tid >= ARRAY_SIZE(tid_to_mac80211_ac)))
+		return 0;
+
+	ac = tid_to_mac80211_ac[tid];
+
+	/* For HE redirect to trigger based fifos */
+	if (link_sta->he_cap.has_he)
+		ac += 4;
+
+	txf = iwl_mld_mac80211_ac_to_fw_tx_fifo(ac);
+
+	/* Only one link: take the lmac according to the band */
+	if (hweight16(sta->valid_links) <= 1) {
+		enum nl80211_band band;
+		struct ieee80211_bss_conf *link =
+			wiphy_dereference(mld->wiphy,
+					  vif->link_conf[link_sta->link_id]);
+
+		if (WARN_ON(!link || !link->chanreq.oper.chan))
+			band = NL80211_BAND_2GHZ;
+		else
+			band = link->chanreq.oper.chan->band;
+		lmac = iwl_mld_get_lmac_id(mld, band);
+
+	/* More than one link but with 2 lmacs: take the minimum */
+	} else if (fw_has_capa(&mld->fw->ucode_capa,
+			       IWL_UCODE_TLV_CAPA_CDB_SUPPORT)) {
+		lmac = IWL_LMAC_5G_INDEX;
+		result = min_t(unsigned int, result,
+			       mld->fwrt.smem_cfg.lmac[lmac].txfifo_size[txf] - 256);
+		lmac = IWL_LMAC_24G_INDEX;
+	/* More than one link but only one lmac */
+	} else {
+		lmac = IWL_LMAC_24G_INDEX;
+	}
+
+	return min_t(unsigned int, result,
+		     mld->fwrt.smem_cfg.lmac[lmac].txfifo_size[txf] - 256);
+}
+
+void iwl_mld_handle_tlc_notif(struct iwl_mld *mld,
+			      struct iwl_rx_packet *pkt)
+{
+	struct iwl_tlc_update_notif *notif = (void *)pkt->data;
+	struct ieee80211_link_sta *link_sta;
+	u32 flags = le32_to_cpu(notif->flags);
+	u32 enabled;
+	u16 size;
+
+	if (IWL_FW_CHECK(mld, notif->sta_id >= mld->fw->ucode_capa.num_stations,
+			 "Invalid sta id (%d) in TLC notification\n",
+			 notif->sta_id))
+		return;
+
+	link_sta = wiphy_dereference(mld->wiphy,
+				     mld->fw_id_to_link_sta[notif->sta_id]);
+
+	if (WARN(IS_ERR_OR_NULL(link_sta),
+		 "link_sta of sta id (%d) doesn't exist\n", notif->sta_id))
+		return;
+
+	if (flags & IWL_TLC_NOTIF_FLAG_RATE) {
+		struct iwl_mld_link_sta *mld_link_sta =
+			iwl_mld_link_sta_from_mac80211(link_sta);
+		char pretty_rate[100];
+
+		if (WARN_ON(!mld_link_sta))
+			return;
+
+		mld_link_sta->last_rate_n_flags =
+			iwl_v3_rate_from_v2_v3(notif->rate,
+					       mld->fw_rates_ver_3);
+
+		rs_pretty_print_rate(pretty_rate, sizeof(pretty_rate),
+				     mld_link_sta->last_rate_n_flags);
+		IWL_DEBUG_RATE(mld, "TLC notif: new rate = %s\n", pretty_rate);
+	}
+
+	/* We are done processing the notif */
+	if (!(flags & IWL_TLC_NOTIF_FLAG_AMSDU))
+		return;
+
+	enabled = le32_to_cpu(notif->amsdu_enabled);
+	size = le32_to_cpu(notif->amsdu_size);
+
+	if (size < 2000) {
+		size = 0;
+		enabled = 0;
+	}
+
+	if (IWL_FW_CHECK(mld, size > link_sta->agg.max_amsdu_len,
+			 "Invalid AMSDU len in TLC notif: %d (Max AMSDU len: %d)\n",
+			 size, link_sta->agg.max_amsdu_len))
+		return;
+
+	link_sta->agg.max_rc_amsdu_len = size;
+
+	for (int i = 0; i < IWL_MAX_TID_COUNT; i++) {
+		if (enabled & BIT(i))
+			link_sta->agg.max_tid_amsdu_len[i] =
+				iwl_mld_get_amsdu_size_of_tid(mld, link_sta, i);
+		else
+			link_sta->agg.max_tid_amsdu_len[i] = 1;
+	}
+
+	ieee80211_sta_recalc_aggregates(link_sta->sta);
+
+	IWL_DEBUG_RATE(mld,
+		       "AMSDU update. AMSDU size: %d, AMSDU selected size: %d, AMSDU TID bitmap 0x%X\n",
+		       le32_to_cpu(notif->amsdu_size), size, enabled);
+}