| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * IEEE 802.11 HT definitions |
| * |
| * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen |
| * <jkmaline@cc.hut.fi> |
| * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi> |
| * Copyright (c) 2005, Devicescape Software, Inc. |
| * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net> |
| * Copyright (c) 2013 - 2014 Intel Mobile Communications GmbH |
| * Copyright (c) 2016 - 2017 Intel Deutschland GmbH |
| * Copyright (c) 2018 - 2025 Intel Corporation |
| */ |
| |
| #ifndef LINUX_IEEE80211_HT_H |
| #define LINUX_IEEE80211_HT_H |
| |
| #include <linux/types.h> |
| #include <linux/if_ether.h> |
| |
| /* Maximal size of an A-MSDU that can be transported in a HT BA session */ |
| #define IEEE80211_MAX_MPDU_LEN_HT_BA 4095 |
| |
| /* Maximal size of an A-MSDU */ |
| #define IEEE80211_MAX_MPDU_LEN_HT_3839 3839 |
| #define IEEE80211_MAX_MPDU_LEN_HT_7935 7935 |
| |
| #define IEEE80211_HT_CTL_LEN 4 |
| |
| enum ieee80211_ht_chanwidth_values { |
| IEEE80211_HT_CHANWIDTH_20MHZ = 0, |
| IEEE80211_HT_CHANWIDTH_ANY = 1, |
| }; |
| |
| /** |
| * struct ieee80211_bar - Block Ack Request frame format |
| * @frame_control: Frame Control |
| * @duration: Duration |
| * @ra: RA |
| * @ta: TA |
| * @control: BAR Control |
| * @start_seq_num: Starting Sequence Number (see Figure 9-37) |
| * |
| * This structure represents the "BlockAckReq frame format" |
| * as described in IEEE Std 802.11-2020 section 9.3.1.7. |
| */ |
| struct ieee80211_bar { |
| __le16 frame_control; |
| __le16 duration; |
| __u8 ra[ETH_ALEN]; |
| __u8 ta[ETH_ALEN]; |
| __le16 control; |
| __le16 start_seq_num; |
| } __packed; |
| |
| /* 802.11 BAR control masks */ |
| #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000 |
| #define IEEE80211_BAR_CTRL_MULTI_TID 0x0002 |
| #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004 |
| #define IEEE80211_BAR_CTRL_TID_INFO_MASK 0xf000 |
| #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT 12 |
| |
| #define IEEE80211_HT_MCS_MASK_LEN 10 |
| |
| /** |
| * struct ieee80211_mcs_info - Supported MCS Set field |
| * @rx_mask: RX mask |
| * @rx_highest: highest supported RX rate. If set represents |
| * the highest supported RX data rate in units of 1 Mbps. |
| * If this field is 0 this value should not be used to |
| * consider the highest RX data rate supported. |
| * @tx_params: TX parameters |
| * @reserved: Reserved bits |
| * |
| * This structure represents the "Supported MCS Set field" as |
| * described in IEEE Std 802.11-2020 section 9.4.2.55.4. |
| */ |
| struct ieee80211_mcs_info { |
| u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN]; |
| __le16 rx_highest; |
| u8 tx_params; |
| u8 reserved[3]; |
| } __packed; |
| |
| /* 802.11n HT capability MSC set */ |
| #define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff |
| #define IEEE80211_HT_MCS_TX_DEFINED 0x01 |
| #define IEEE80211_HT_MCS_TX_RX_DIFF 0x02 |
| /* value 0 == 1 stream etc */ |
| #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK 0x0C |
| #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT 2 |
| #define IEEE80211_HT_MCS_TX_MAX_STREAMS 4 |
| #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION 0x10 |
| |
| #define IEEE80211_HT_MCS_CHAINS(mcs) ((mcs) == 32 ? 1 : (1 + ((mcs) >> 3))) |
| |
| /* |
| * 802.11n D5.0 20.3.5 / 20.6 says: |
| * - indices 0 to 7 and 32 are single spatial stream |
| * - 8 to 31 are multiple spatial streams using equal modulation |
| * [8..15 for two streams, 16..23 for three and 24..31 for four] |
| * - remainder are multiple spatial streams using unequal modulation |
| */ |
| #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33 |
| #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \ |
| (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8) |
| |
| /** |
| * struct ieee80211_ht_cap - HT capabilities element |
| * @cap_info: HT Capability Information |
| * @ampdu_params_info: A-MPDU Parameters |
| * @mcs: Supported MCS Set |
| * @extended_ht_cap_info: HT Extended Capabilities |
| * @tx_BF_cap_info: Transmit Beamforming Capabilities |
| * @antenna_selection_info: ASEL Capability |
| * |
| * This structure represents the payload of the "HT Capabilities |
| * element" as described in IEEE Std 802.11-2020 section 9.4.2.55. |
| */ |
| struct ieee80211_ht_cap { |
| __le16 cap_info; |
| u8 ampdu_params_info; |
| |
| /* 16 bytes MCS information */ |
| struct ieee80211_mcs_info mcs; |
| |
| __le16 extended_ht_cap_info; |
| __le32 tx_BF_cap_info; |
| u8 antenna_selection_info; |
| } __packed; |
| |
| /* 802.11n HT capabilities masks (for cap_info) */ |
| #define IEEE80211_HT_CAP_LDPC_CODING 0x0001 |
| #define IEEE80211_HT_CAP_SUP_WIDTH_20_40 0x0002 |
| #define IEEE80211_HT_CAP_SM_PS 0x000C |
| #define IEEE80211_HT_CAP_SM_PS_SHIFT 2 |
| #define IEEE80211_HT_CAP_GRN_FLD 0x0010 |
| #define IEEE80211_HT_CAP_SGI_20 0x0020 |
| #define IEEE80211_HT_CAP_SGI_40 0x0040 |
| #define IEEE80211_HT_CAP_TX_STBC 0x0080 |
| #define IEEE80211_HT_CAP_RX_STBC 0x0300 |
| #define IEEE80211_HT_CAP_RX_STBC_SHIFT 8 |
| #define IEEE80211_HT_CAP_DELAY_BA 0x0400 |
| #define IEEE80211_HT_CAP_MAX_AMSDU 0x0800 |
| #define IEEE80211_HT_CAP_DSSSCCK40 0x1000 |
| #define IEEE80211_HT_CAP_RESERVED 0x2000 |
| #define IEEE80211_HT_CAP_40MHZ_INTOLERANT 0x4000 |
| #define IEEE80211_HT_CAP_LSIG_TXOP_PROT 0x8000 |
| |
| /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */ |
| #define IEEE80211_HT_EXT_CAP_PCO 0x0001 |
| #define IEEE80211_HT_EXT_CAP_PCO_TIME 0x0006 |
| #define IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT 1 |
| #define IEEE80211_HT_EXT_CAP_MCS_FB 0x0300 |
| #define IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT 8 |
| #define IEEE80211_HT_EXT_CAP_HTC_SUP 0x0400 |
| #define IEEE80211_HT_EXT_CAP_RD_RESPONDER 0x0800 |
| |
| /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */ |
| #define IEEE80211_HT_AMPDU_PARM_FACTOR 0x03 |
| #define IEEE80211_HT_AMPDU_PARM_DENSITY 0x1C |
| #define IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT 2 |
| |
| /* |
| * Maximum length of AMPDU that the STA can receive in high-throughput (HT). |
| * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets) |
| */ |
| enum ieee80211_max_ampdu_length_exp { |
| IEEE80211_HT_MAX_AMPDU_8K = 0, |
| IEEE80211_HT_MAX_AMPDU_16K = 1, |
| IEEE80211_HT_MAX_AMPDU_32K = 2, |
| IEEE80211_HT_MAX_AMPDU_64K = 3 |
| }; |
| |
| #define IEEE80211_HT_MAX_AMPDU_FACTOR 13 |
| |
| /* Minimum MPDU start spacing */ |
| enum ieee80211_min_mpdu_spacing { |
| IEEE80211_HT_MPDU_DENSITY_NONE = 0, /* No restriction */ |
| IEEE80211_HT_MPDU_DENSITY_0_25 = 1, /* 1/4 usec */ |
| IEEE80211_HT_MPDU_DENSITY_0_5 = 2, /* 1/2 usec */ |
| IEEE80211_HT_MPDU_DENSITY_1 = 3, /* 1 usec */ |
| IEEE80211_HT_MPDU_DENSITY_2 = 4, /* 2 usec */ |
| IEEE80211_HT_MPDU_DENSITY_4 = 5, /* 4 usec */ |
| IEEE80211_HT_MPDU_DENSITY_8 = 6, /* 8 usec */ |
| IEEE80211_HT_MPDU_DENSITY_16 = 7 /* 16 usec */ |
| }; |
| |
| /** |
| * struct ieee80211_ht_operation - HT operation IE |
| * @primary_chan: Primary Channel |
| * @ht_param: HT Operation Information parameters |
| * @operation_mode: HT Operation Information operation mode |
| * @stbc_param: HT Operation Information STBC params |
| * @basic_set: Basic HT-MCS Set |
| * |
| * This structure represents the payload of the "HT Operation |
| * element" as described in IEEE Std 802.11-2020 section 9.4.2.56. |
| */ |
| struct ieee80211_ht_operation { |
| u8 primary_chan; |
| u8 ht_param; |
| __le16 operation_mode; |
| __le16 stbc_param; |
| u8 basic_set[16]; |
| } __packed; |
| |
| /* for ht_param */ |
| #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03 |
| #define IEEE80211_HT_PARAM_CHA_SEC_NONE 0x00 |
| #define IEEE80211_HT_PARAM_CHA_SEC_ABOVE 0x01 |
| #define IEEE80211_HT_PARAM_CHA_SEC_BELOW 0x03 |
| #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY 0x04 |
| #define IEEE80211_HT_PARAM_RIFS_MODE 0x08 |
| |
| /* for operation_mode */ |
| #define IEEE80211_HT_OP_MODE_PROTECTION 0x0003 |
| #define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0 |
| #define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 1 |
| #define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 2 |
| #define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 3 |
| #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT 0x0004 |
| #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT 0x0010 |
| #define IEEE80211_HT_OP_MODE_CCFS2_SHIFT 5 |
| #define IEEE80211_HT_OP_MODE_CCFS2_MASK 0x1fe0 |
| |
| /* for stbc_param */ |
| #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON 0x0040 |
| #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080 |
| #define IEEE80211_HT_STBC_PARAM_STBC_BEACON 0x0100 |
| #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT 0x0200 |
| #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE 0x0400 |
| #define IEEE80211_HT_STBC_PARAM_PCO_PHASE 0x0800 |
| |
| |
| /* block-ack parameters */ |
| #define IEEE80211_ADDBA_PARAM_AMSDU_MASK 0x0001 |
| #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002 |
| #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C |
| #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0 |
| #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000 |
| #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800 |
| |
| /* |
| * A-MPDU buffer sizes |
| * According to HT size varies from 8 to 64 frames |
| * HE adds the ability to have up to 256 frames. |
| * EHT adds the ability to have up to 1K frames. |
| */ |
| #define IEEE80211_MIN_AMPDU_BUF 0x8 |
| #define IEEE80211_MAX_AMPDU_BUF_HT 0x40 |
| #define IEEE80211_MAX_AMPDU_BUF_HE 0x100 |
| #define IEEE80211_MAX_AMPDU_BUF_EHT 0x400 |
| |
| |
| /* Spatial Multiplexing Power Save Modes (for capability) */ |
| #define WLAN_HT_CAP_SM_PS_STATIC 0 |
| #define WLAN_HT_CAP_SM_PS_DYNAMIC 1 |
| #define WLAN_HT_CAP_SM_PS_INVALID 2 |
| #define WLAN_HT_CAP_SM_PS_DISABLED 3 |
| |
| /* for SM power control field lower two bits */ |
| #define WLAN_HT_SMPS_CONTROL_DISABLED 0 |
| #define WLAN_HT_SMPS_CONTROL_STATIC 1 |
| #define WLAN_HT_SMPS_CONTROL_DYNAMIC 3 |
| |
| /* HT action codes */ |
| enum ieee80211_ht_actioncode { |
| WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0, |
| WLAN_HT_ACTION_SMPS = 1, |
| WLAN_HT_ACTION_PSMP = 2, |
| WLAN_HT_ACTION_PCO_PHASE = 3, |
| WLAN_HT_ACTION_CSI = 4, |
| WLAN_HT_ACTION_NONCOMPRESSED_BF = 5, |
| WLAN_HT_ACTION_COMPRESSED_BF = 6, |
| WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7, |
| }; |
| |
| /* BACK action code */ |
| enum ieee80211_back_actioncode { |
| WLAN_ACTION_ADDBA_REQ = 0, |
| WLAN_ACTION_ADDBA_RESP = 1, |
| WLAN_ACTION_DELBA = 2, |
| }; |
| |
| /* BACK (block-ack) parties */ |
| enum ieee80211_back_parties { |
| WLAN_BACK_RECIPIENT = 0, |
| WLAN_BACK_INITIATOR = 1, |
| }; |
| |
| #endif /* LINUX_IEEE80211_HT_H */ |
