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mirror-linux/include/linux/ieee80211-ht.h

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/* 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 */
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