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

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* IEEE 802.11 EHT 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_EHT_H
#define LINUX_IEEE80211_EHT_H
#include <linux/types.h>
#include <linux/if_ether.h>
/* need HE definitions for the inlines here */
#include <linux/ieee80211-he.h>
#define IEEE80211_TTLM_MAX_CNT 2
#define IEEE80211_TTLM_CONTROL_DIRECTION 0x03
#define IEEE80211_TTLM_CONTROL_DEF_LINK_MAP 0x04
#define IEEE80211_TTLM_CONTROL_SWITCH_TIME_PRESENT 0x08
#define IEEE80211_TTLM_CONTROL_EXPECTED_DUR_PRESENT 0x10
#define IEEE80211_TTLM_CONTROL_LINK_MAP_SIZE 0x20
#define IEEE80211_TTLM_DIRECTION_DOWN 0
#define IEEE80211_TTLM_DIRECTION_UP 1
#define IEEE80211_TTLM_DIRECTION_BOTH 2
/**
* struct ieee80211_ttlm_elem - TID-To-Link Mapping element
*
* Defined in section 9.4.2.314 in P802.11be_D4
*
* @control: the first part of control field
* @optional: the second part of control field
*/
struct ieee80211_ttlm_elem {
u8 control;
u8 optional[];
} __packed;
#define IEEE80211_EHT_MCS_NSS_RX 0x0f
#define IEEE80211_EHT_MCS_NSS_TX 0xf0
/**
* struct ieee80211_eht_mcs_nss_supp_20mhz_only - EHT 20MHz only station max
* supported NSS for per MCS.
*
* For each field below, bits 0 - 3 indicate the maximal number of spatial
* streams for Rx, and bits 4 - 7 indicate the maximal number of spatial streams
* for Tx.
*
* @rx_tx_mcs7_max_nss: indicates the maximum number of spatial streams
* supported for reception and the maximum number of spatial streams
* supported for transmission for MCS 0 - 7.
* @rx_tx_mcs9_max_nss: indicates the maximum number of spatial streams
* supported for reception and the maximum number of spatial streams
* supported for transmission for MCS 8 - 9.
* @rx_tx_mcs11_max_nss: indicates the maximum number of spatial streams
* supported for reception and the maximum number of spatial streams
* supported for transmission for MCS 10 - 11.
* @rx_tx_mcs13_max_nss: indicates the maximum number of spatial streams
* supported for reception and the maximum number of spatial streams
* supported for transmission for MCS 12 - 13.
* @rx_tx_max_nss: array of the previous fields for easier loop access
*/
struct ieee80211_eht_mcs_nss_supp_20mhz_only {
union {
struct {
u8 rx_tx_mcs7_max_nss;
u8 rx_tx_mcs9_max_nss;
u8 rx_tx_mcs11_max_nss;
u8 rx_tx_mcs13_max_nss;
};
u8 rx_tx_max_nss[4];
};
};
/**
* struct ieee80211_eht_mcs_nss_supp_bw - EHT max supported NSS per MCS (except
* 20MHz only stations).
*
* For each field below, bits 0 - 3 indicate the maximal number of spatial
* streams for Rx, and bits 4 - 7 indicate the maximal number of spatial streams
* for Tx.
*
* @rx_tx_mcs9_max_nss: indicates the maximum number of spatial streams
* supported for reception and the maximum number of spatial streams
* supported for transmission for MCS 0 - 9.
* @rx_tx_mcs11_max_nss: indicates the maximum number of spatial streams
* supported for reception and the maximum number of spatial streams
* supported for transmission for MCS 10 - 11.
* @rx_tx_mcs13_max_nss: indicates the maximum number of spatial streams
* supported for reception and the maximum number of spatial streams
* supported for transmission for MCS 12 - 13.
* @rx_tx_max_nss: array of the previous fields for easier loop access
*/
struct ieee80211_eht_mcs_nss_supp_bw {
union {
struct {
u8 rx_tx_mcs9_max_nss;
u8 rx_tx_mcs11_max_nss;
u8 rx_tx_mcs13_max_nss;
};
u8 rx_tx_max_nss[3];
};
};
/**
* struct ieee80211_eht_cap_elem_fixed - EHT capabilities fixed data
*
* This structure is the "EHT Capabilities element" fixed fields as
* described in P802.11be_D2.0 section 9.4.2.313.
*
* @mac_cap_info: MAC capabilities, see IEEE80211_EHT_MAC_CAP*
* @phy_cap_info: PHY capabilities, see IEEE80211_EHT_PHY_CAP*
*/
struct ieee80211_eht_cap_elem_fixed {
u8 mac_cap_info[2];
u8 phy_cap_info[9];
} __packed;
/**
* struct ieee80211_eht_cap_elem - EHT capabilities element
* @fixed: fixed parts, see &ieee80211_eht_cap_elem_fixed
* @optional: optional parts
*/
struct ieee80211_eht_cap_elem {
struct ieee80211_eht_cap_elem_fixed fixed;
/*
* Followed by:
* Supported EHT-MCS And NSS Set field: 4, 3, 6 or 9 octets.
* EHT PPE Thresholds field: variable length.
*/
u8 optional[];
} __packed;
#define IEEE80211_EHT_OPER_INFO_PRESENT 0x01
#define IEEE80211_EHT_OPER_DISABLED_SUBCHANNEL_BITMAP_PRESENT 0x02
#define IEEE80211_EHT_OPER_EHT_DEF_PE_DURATION 0x04
#define IEEE80211_EHT_OPER_GROUP_ADDRESSED_BU_IND_LIMIT 0x08
#define IEEE80211_EHT_OPER_GROUP_ADDRESSED_BU_IND_EXP_MASK 0x30
#define IEEE80211_EHT_OPER_MCS15_DISABLE 0x40
/**
* struct ieee80211_eht_operation - eht operation element
*
* This structure is the "EHT Operation Element" fields as
* described in P802.11be_D2.0 section 9.4.2.311
*
* @params: EHT operation element parameters. See &IEEE80211_EHT_OPER_*
* @basic_mcs_nss: indicates the EHT-MCSs for each number of spatial streams in
* EHT PPDUs that are supported by all EHT STAs in the BSS in transmit and
* receive.
* @optional: optional parts
*/
struct ieee80211_eht_operation {
u8 params;
struct ieee80211_eht_mcs_nss_supp_20mhz_only basic_mcs_nss;
u8 optional[];
} __packed;
/**
* struct ieee80211_eht_operation_info - eht operation information
*
* @control: EHT operation information control.
* @ccfs0: defines a channel center frequency for a 20, 40, 80, 160, or 320 MHz
* EHT BSS.
* @ccfs1: defines a channel center frequency for a 160 or 320 MHz EHT BSS.
* @optional: optional parts
*/
struct ieee80211_eht_operation_info {
u8 control;
u8 ccfs0;
u8 ccfs1;
u8 optional[];
} __packed;
/* EHT MAC capabilities as defined in P802.11be_D2.0 section 9.4.2.313.2 */
#define IEEE80211_EHT_MAC_CAP0_EPCS_PRIO_ACCESS 0x01
#define IEEE80211_EHT_MAC_CAP0_OM_CONTROL 0x02
#define IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1 0x04
#define IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE2 0x08
#define IEEE80211_EHT_MAC_CAP0_RESTRICTED_TWT 0x10
#define IEEE80211_EHT_MAC_CAP0_SCS_TRAFFIC_DESC 0x20
#define IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_MASK 0xc0
#define IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_3895 0
#define IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_7991 1
#define IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_11454 2
#define IEEE80211_EHT_MAC_CAP1_MAX_AMPDU_LEN_MASK 0x01
#define IEEE80211_EHT_MAC_CAP1_EHT_TRS 0x02
#define IEEE80211_EHT_MAC_CAP1_TXOP_RET 0x04
#define IEEE80211_EHT_MAC_CAP1_TWO_BQRS 0x08
#define IEEE80211_EHT_MAC_CAP1_EHT_LINK_ADAPT_MASK 0x30
#define IEEE80211_EHT_MAC_CAP1_UNSOL_EPCS_PRIO_ACCESS 0x40
/* EHT PHY capabilities as defined in P802.11be_D2.0 section 9.4.2.313.3 */
#define IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ 0x02
#define IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ 0x04
#define IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI 0x08
#define IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO 0x10
#define IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER 0x20
#define IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE 0x40
/* EHT beamformee number of spatial streams <= 80MHz is split */
#define IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK 0x80
#define IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_80MHZ_MASK 0x03
#define IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK 0x1c
#define IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK 0xe0
#define IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK 0x07
#define IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK 0x38
/* EHT number of sounding dimensions for 320MHz is split */
#define IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK 0xc0
#define IEEE80211_EHT_PHY_CAP3_SOUNDING_DIM_320MHZ_MASK 0x01
#define IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK 0x02
#define IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK 0x04
#define IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK 0x08
#define IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK 0x10
#define IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK 0x20
#define IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK 0x40
#define IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK 0x80
#define IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO 0x01
#define IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP 0x02
#define IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP 0x04
#define IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI 0x08
#define IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK 0xf0
#define IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK 0x01
#define IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP 0x02
#define IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP 0x04
#define IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT 0x08
#define IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK 0x30
#define IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_0US 0
#define IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_8US 1
#define IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_16US 2
#define IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_20US 3
/* Maximum number of supported EHT LTF is split */
#define IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK 0xc0
#define IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF 0x40
#define IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK 0x07
#define IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_80MHZ 0x08
#define IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_160MHZ 0x30
#define IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_320MHZ 0x40
#define IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK 0x78
#define IEEE80211_EHT_PHY_CAP6_EHT_DUP_6GHZ_SUPP 0x80
#define IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW 0x01
#define IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ 0x02
#define IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ 0x04
#define IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ 0x08
#define IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ 0x10
#define IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ 0x20
#define IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ 0x40
#define IEEE80211_EHT_PHY_CAP7_TB_SOUNDING_FDBK_RATE_LIMIT 0x80
#define IEEE80211_EHT_PHY_CAP8_RX_1024QAM_WIDER_BW_DL_OFDMA 0x01
#define IEEE80211_EHT_PHY_CAP8_RX_4096QAM_WIDER_BW_DL_OFDMA 0x02
/*
* EHT operation channel width as defined in P802.11be_D2.0 section 9.4.2.311
*/
#define IEEE80211_EHT_OPER_CHAN_WIDTH 0x7
#define IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ 0
#define IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ 1
#define IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ 2
#define IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ 3
#define IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ 4
/* Calculate 802.11be EHT capabilities IE Tx/Rx EHT MCS NSS Support Field size */
static inline u8
ieee80211_eht_mcs_nss_size(const struct ieee80211_he_cap_elem *he_cap,
const struct ieee80211_eht_cap_elem_fixed *eht_cap,
bool from_ap)
{
u8 count = 0;
/* on 2.4 GHz, if it supports 40 MHz, the result is 3 */
if (he_cap->phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G)
return 3;
/* on 2.4 GHz, these three bits are reserved, so should be 0 */
if (he_cap->phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G)
count += 3;
if (he_cap->phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G)
count += 3;
if (eht_cap->phy_cap_info[0] & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ)
count += 3;
if (count)
return count;
return from_ap ? 3 : 4;
}
/* 802.11be EHT PPE Thresholds */
#define IEEE80211_EHT_PPE_THRES_NSS_POS 0
#define IEEE80211_EHT_PPE_THRES_NSS_MASK 0xf
#define IEEE80211_EHT_PPE_THRES_RU_INDEX_BITMASK_MASK 0x1f0
#define IEEE80211_EHT_PPE_THRES_INFO_PPET_SIZE 3
#define IEEE80211_EHT_PPE_THRES_INFO_HEADER_SIZE 9
/*
* Calculate 802.11be EHT capabilities IE EHT field size
*/
static inline u8
ieee80211_eht_ppe_size(u16 ppe_thres_hdr, const u8 *phy_cap_info)
{
u32 n;
if (!(phy_cap_info[5] &
IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT))
return 0;
n = hweight16(ppe_thres_hdr &
IEEE80211_EHT_PPE_THRES_RU_INDEX_BITMASK_MASK);
n *= 1 + u16_get_bits(ppe_thres_hdr, IEEE80211_EHT_PPE_THRES_NSS_MASK);
/*
* Each pair is 6 bits, and we need to add the 9 "header" bits to the
* total size.
*/
n = n * IEEE80211_EHT_PPE_THRES_INFO_PPET_SIZE * 2 +
IEEE80211_EHT_PPE_THRES_INFO_HEADER_SIZE;
return DIV_ROUND_UP(n, 8);
}
static inline bool
ieee80211_eht_capa_size_ok(const u8 *he_capa, const u8 *data, u8 len,
bool from_ap)
{
const struct ieee80211_eht_cap_elem_fixed *elem = (const void *)data;
u8 needed = sizeof(struct ieee80211_eht_cap_elem_fixed);
if (len < needed || !he_capa)
return false;
needed += ieee80211_eht_mcs_nss_size((const void *)he_capa,
(const void *)data,
from_ap);
if (len < needed)
return false;
if (elem->phy_cap_info[5] &
IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT) {
u16 ppe_thres_hdr;
if (len < needed + sizeof(ppe_thres_hdr))
return false;
ppe_thres_hdr = get_unaligned_le16(data + needed);
needed += ieee80211_eht_ppe_size(ppe_thres_hdr,
elem->phy_cap_info);
}
return len >= needed;
}
static inline bool
ieee80211_eht_oper_size_ok(const u8 *data, u8 len)
{
const struct ieee80211_eht_operation *elem = (const void *)data;
u8 needed = sizeof(*elem);
if (len < needed)
return false;
if (elem->params & IEEE80211_EHT_OPER_INFO_PRESENT) {
needed += 3;
if (elem->params &
IEEE80211_EHT_OPER_DISABLED_SUBCHANNEL_BITMAP_PRESENT)
needed += 2;
}
return len >= needed;
}
/* must validate ieee80211_eht_oper_size_ok() first */
static inline u16
ieee80211_eht_oper_dis_subchan_bitmap(const struct ieee80211_eht_operation *eht_oper)
{
const struct ieee80211_eht_operation_info *info =
(const void *)eht_oper->optional;
if (!(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT))
return 0;
if (!(eht_oper->params & IEEE80211_EHT_OPER_DISABLED_SUBCHANNEL_BITMAP_PRESENT))
return 0;
return get_unaligned_le16(info->optional);
}
#define IEEE80211_BW_IND_DIS_SUBCH_PRESENT BIT(1)
struct ieee80211_bandwidth_indication {
u8 params;
struct ieee80211_eht_operation_info info;
} __packed;
static inline bool
ieee80211_bandwidth_indication_size_ok(const u8 *data, u8 len)
{
const struct ieee80211_bandwidth_indication *bwi = (const void *)data;
if (len < sizeof(*bwi))
return false;
if (bwi->params & IEEE80211_BW_IND_DIS_SUBCH_PRESENT &&
len < sizeof(*bwi) + 2)
return false;
return true;
}
/* Protected EHT action codes */
enum ieee80211_protected_eht_actioncode {
WLAN_PROTECTED_EHT_ACTION_TTLM_REQ = 0,
WLAN_PROTECTED_EHT_ACTION_TTLM_RES = 1,
WLAN_PROTECTED_EHT_ACTION_TTLM_TEARDOWN = 2,
WLAN_PROTECTED_EHT_ACTION_EPCS_ENABLE_REQ = 3,
WLAN_PROTECTED_EHT_ACTION_EPCS_ENABLE_RESP = 4,
WLAN_PROTECTED_EHT_ACTION_EPCS_ENABLE_TEARDOWN = 5,
WLAN_PROTECTED_EHT_ACTION_EML_OP_MODE_NOTIF = 6,
WLAN_PROTECTED_EHT_ACTION_LINK_RECOMMEND = 7,
WLAN_PROTECTED_EHT_ACTION_ML_OP_UPDATE_REQ = 8,
WLAN_PROTECTED_EHT_ACTION_ML_OP_UPDATE_RESP = 9,
WLAN_PROTECTED_EHT_ACTION_LINK_RECONFIG_NOTIF = 10,
WLAN_PROTECTED_EHT_ACTION_LINK_RECONFIG_REQ = 11,
WLAN_PROTECTED_EHT_ACTION_LINK_RECONFIG_RESP = 12,
};
/* multi-link device */
#define IEEE80211_MLD_MAX_NUM_LINKS 15
#define IEEE80211_ML_CONTROL_TYPE 0x0007
#define IEEE80211_ML_CONTROL_TYPE_BASIC 0
#define IEEE80211_ML_CONTROL_TYPE_PREQ 1
#define IEEE80211_ML_CONTROL_TYPE_RECONF 2
#define IEEE80211_ML_CONTROL_TYPE_TDLS 3
#define IEEE80211_ML_CONTROL_TYPE_PRIO_ACCESS 4
#define IEEE80211_ML_CONTROL_PRESENCE_MASK 0xfff0
struct ieee80211_multi_link_elem {
__le16 control;
u8 variable[];
} __packed;
#define IEEE80211_MLC_BASIC_PRES_LINK_ID 0x0010
#define IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT 0x0020
#define IEEE80211_MLC_BASIC_PRES_MED_SYNC_DELAY 0x0040
#define IEEE80211_MLC_BASIC_PRES_EML_CAPA 0x0080
#define IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP 0x0100
#define IEEE80211_MLC_BASIC_PRES_MLD_ID 0x0200
#define IEEE80211_MLC_BASIC_PRES_EXT_MLD_CAPA_OP 0x0400
#define IEEE80211_MED_SYNC_DELAY_DURATION 0x00ff
#define IEEE80211_MED_SYNC_DELAY_SYNC_OFDM_ED_THRESH 0x0f00
#define IEEE80211_MED_SYNC_DELAY_SYNC_MAX_NUM_TXOPS 0xf000
/*
* Described in P802.11be_D3.0
* dot11MSDTimerDuration should default to 5484 (i.e. 171.375)
* dot11MSDOFDMEDthreshold defaults to -72 (i.e. 0)
* dot11MSDTXOPMAX defaults to 1
*/
#define IEEE80211_MED_SYNC_DELAY_DEFAULT 0x10ac
#define IEEE80211_EML_CAP_EMLSR_SUPP 0x0001
#define IEEE80211_EML_CAP_EMLSR_PADDING_DELAY 0x000e
#define IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_0US 0
#define IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_32US 1
#define IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_64US 2
#define IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_128US 3
#define IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_256US 4
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY 0x0070
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_0US 0
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_16US 1
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_32US 2
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_64US 3
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_128US 4
#define IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_256US 5
#define IEEE80211_EML_CAP_EMLMR_SUPPORT 0x0080
#define IEEE80211_EML_CAP_EMLMR_DELAY 0x0700
#define IEEE80211_EML_CAP_EMLMR_DELAY_0US 0
#define IEEE80211_EML_CAP_EMLMR_DELAY_32US 1
#define IEEE80211_EML_CAP_EMLMR_DELAY_64US 2
#define IEEE80211_EML_CAP_EMLMR_DELAY_128US 3
#define IEEE80211_EML_CAP_EMLMR_DELAY_256US 4
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT 0x7800
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_0 0
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_128US 1
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_256US 2
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_512US 3
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_1TU 4
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_2TU 5
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_4TU 6
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_8TU 7
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_16TU 8
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_32TU 9
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_64TU 10
#define IEEE80211_EML_CAP_TRANSITION_TIMEOUT_128TU 11
#define IEEE80211_MLD_CAP_OP_MAX_SIMUL_LINKS 0x000f
#define IEEE80211_MLD_CAP_OP_SRS_SUPPORT 0x0010
#define IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_SUPP 0x0060
#define IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_NO_SUPP 0
#define IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_SUPP_SAME 1
#define IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_RESERVED 2
#define IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_SUPP_DIFF 3
#define IEEE80211_MLD_CAP_OP_FREQ_SEP_TYPE_IND 0x0f80
#define IEEE80211_MLD_CAP_OP_AAR_SUPPORT 0x1000
#define IEEE80211_MLD_CAP_OP_LINK_RECONF_SUPPORT 0x2000
#define IEEE80211_MLD_CAP_OP_ALIGNED_TWT_SUPPORT 0x4000
struct ieee80211_mle_basic_common_info {
u8 len;
u8 mld_mac_addr[ETH_ALEN];
u8 variable[];
} __packed;
#define IEEE80211_MLC_PREQ_PRES_MLD_ID 0x0010
struct ieee80211_mle_preq_common_info {
u8 len;
u8 variable[];
} __packed;
#define IEEE80211_MLC_RECONF_PRES_MLD_MAC_ADDR 0x0010
#define IEEE80211_MLC_RECONF_PRES_EML_CAPA 0x0020
#define IEEE80211_MLC_RECONF_PRES_MLD_CAPA_OP 0x0040
#define IEEE80211_MLC_RECONF_PRES_EXT_MLD_CAPA_OP 0x0080
/* no fixed fields in RECONF */
struct ieee80211_mle_tdls_common_info {
u8 len;
u8 ap_mld_mac_addr[ETH_ALEN];
} __packed;
#define IEEE80211_MLC_PRIO_ACCESS_PRES_AP_MLD_MAC_ADDR 0x0010
/* no fixed fields in PRIO_ACCESS */
/**
* ieee80211_mle_common_size - check multi-link element common size
* @data: multi-link element, must already be checked for size using
* ieee80211_mle_size_ok()
* Return: the size of the multi-link element's "common" subfield
*/
static inline u8 ieee80211_mle_common_size(const u8 *data)
{
const struct ieee80211_multi_link_elem *mle = (const void *)data;
u16 control = le16_to_cpu(mle->control);
switch (u16_get_bits(control, IEEE80211_ML_CONTROL_TYPE)) {
case IEEE80211_ML_CONTROL_TYPE_BASIC:
case IEEE80211_ML_CONTROL_TYPE_PREQ:
case IEEE80211_ML_CONTROL_TYPE_TDLS:
case IEEE80211_ML_CONTROL_TYPE_RECONF:
case IEEE80211_ML_CONTROL_TYPE_PRIO_ACCESS:
/*
* The length is the first octet pointed by mle->variable so no
* need to add anything
*/
break;
default:
WARN_ON(1);
return 0;
}
return sizeof(*mle) + mle->variable[0];
}
/**
* ieee80211_mle_get_link_id - returns the link ID
* @data: the basic multi link element
* Return: the link ID, or -1 if not present
*
* The element is assumed to be of the correct type (BASIC) and big enough,
* this must be checked using ieee80211_mle_type_ok().
*/
static inline int ieee80211_mle_get_link_id(const u8 *data)
{
const struct ieee80211_multi_link_elem *mle = (const void *)data;
u16 control = le16_to_cpu(mle->control);
const u8 *common = mle->variable;
/* common points now at the beginning of ieee80211_mle_basic_common_info */
common += sizeof(struct ieee80211_mle_basic_common_info);
if (!(control & IEEE80211_MLC_BASIC_PRES_LINK_ID))
return -1;
return *common;
}
/**
* ieee80211_mle_get_bss_param_ch_cnt - returns the BSS parameter change count
* @data: pointer to the basic multi link element
* Return: the BSS Parameter Change Count field value, or -1 if not present
*
* The element is assumed to be of the correct type (BASIC) and big enough,
* this must be checked using ieee80211_mle_type_ok().
*/
static inline int
ieee80211_mle_get_bss_param_ch_cnt(const u8 *data)
{
const struct ieee80211_multi_link_elem *mle = (const void *)data;
u16 control = le16_to_cpu(mle->control);
const u8 *common = mle->variable;
/* common points now at the beginning of ieee80211_mle_basic_common_info */
common += sizeof(struct ieee80211_mle_basic_common_info);
if (!(control & IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT))
return -1;
if (control & IEEE80211_MLC_BASIC_PRES_LINK_ID)
common += 1;
return *common;
}
/**
* ieee80211_mle_get_eml_med_sync_delay - returns the medium sync delay
* @data: pointer to the multi-link element
* Return: the medium synchronization delay field value from the multi-link
* element, or the default value (%IEEE80211_MED_SYNC_DELAY_DEFAULT)
* if not present
*
* The element is assumed to be of the correct type (BASIC) and big enough,
* this must be checked using ieee80211_mle_type_ok().
*/
static inline u16 ieee80211_mle_get_eml_med_sync_delay(const u8 *data)
{
const struct ieee80211_multi_link_elem *mle = (const void *)data;
u16 control = le16_to_cpu(mle->control);
const u8 *common = mle->variable;
/* common points now at the beginning of ieee80211_mle_basic_common_info */
common += sizeof(struct ieee80211_mle_basic_common_info);
if (!(control & IEEE80211_MLC_BASIC_PRES_MED_SYNC_DELAY))
return IEEE80211_MED_SYNC_DELAY_DEFAULT;
if (control & IEEE80211_MLC_BASIC_PRES_LINK_ID)
common += 1;
if (control & IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT)
common += 1;
return get_unaligned_le16(common);
}
/**
* ieee80211_mle_get_eml_cap - returns the EML capability
* @data: pointer to the multi-link element
* Return: the EML capability field value from the multi-link element,
* or 0 if not present
*
* The element is assumed to be of the correct type (BASIC) and big enough,
* this must be checked using ieee80211_mle_type_ok().
*/
static inline u16 ieee80211_mle_get_eml_cap(const u8 *data)
{
const struct ieee80211_multi_link_elem *mle = (const void *)data;
u16 control = le16_to_cpu(mle->control);
const u8 *common = mle->variable;
/* common points now at the beginning of ieee80211_mle_basic_common_info */
common += sizeof(struct ieee80211_mle_basic_common_info);
if (!(control & IEEE80211_MLC_BASIC_PRES_EML_CAPA))
return 0;
if (control & IEEE80211_MLC_BASIC_PRES_LINK_ID)
common += 1;
if (control & IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT)
common += 1;
if (control & IEEE80211_MLC_BASIC_PRES_MED_SYNC_DELAY)
common += 2;
return get_unaligned_le16(common);
}
/**
* ieee80211_mle_get_mld_capa_op - returns the MLD capabilities and operations.
* @data: pointer to the multi-link element
* Return: the MLD capabilities and operations field value from the multi-link
* element, or 0 if not present
*
* The element is assumed to be of the correct type (BASIC) and big enough,
* this must be checked using ieee80211_mle_type_ok().
*/
static inline u16 ieee80211_mle_get_mld_capa_op(const u8 *data)
{
const struct ieee80211_multi_link_elem *mle = (const void *)data;
u16 control = le16_to_cpu(mle->control);
const u8 *common = mle->variable;
/*
* common points now at the beginning of
* ieee80211_mle_basic_common_info
*/
common += sizeof(struct ieee80211_mle_basic_common_info);
if (!(control & IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP))
return 0;
if (control & IEEE80211_MLC_BASIC_PRES_LINK_ID)
common += 1;
if (control & IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT)
common += 1;
if (control & IEEE80211_MLC_BASIC_PRES_MED_SYNC_DELAY)
common += 2;
if (control & IEEE80211_MLC_BASIC_PRES_EML_CAPA)
common += 2;
return get_unaligned_le16(common);
}
/* Defined in Figure 9-1074t in P802.11be_D7.0 */
#define IEEE80211_EHT_ML_EXT_MLD_CAPA_OP_PARAM_UPDATE 0x0001
#define IEEE80211_EHT_ML_EXT_MLD_CAPA_OP_RECO_MAX_LINKS_MASK 0x001e
#define IEEE80211_EHT_ML_EXT_MLD_CAPA_NSTR_UPDATE 0x0020
#define IEEE80211_EHT_ML_EXT_MLD_CAPA_EMLSR_ENA_ON_ONE_LINK 0x0040
#define IEEE80211_EHT_ML_EXT_MLD_CAPA_BTM_MLD_RECO_MULTI_AP 0x0080
/**
* ieee80211_mle_get_ext_mld_capa_op - returns the extended MLD capabilities
* and operations.
* @data: pointer to the multi-link element
* Return: the extended MLD capabilities and operations field value from
* the multi-link element, or 0 if not present
*
* The element is assumed to be of the correct type (BASIC) and big enough,
* this must be checked using ieee80211_mle_type_ok().
*/
static inline u16 ieee80211_mle_get_ext_mld_capa_op(const u8 *data)
{
const struct ieee80211_multi_link_elem *mle = (const void *)data;
u16 control = le16_to_cpu(mle->control);
const u8 *common = mle->variable;
/*
* common points now at the beginning of
* ieee80211_mle_basic_common_info
*/
common += sizeof(struct ieee80211_mle_basic_common_info);
if (!(control & IEEE80211_MLC_BASIC_PRES_EXT_MLD_CAPA_OP))
return 0;
if (control & IEEE80211_MLC_BASIC_PRES_LINK_ID)
common += 1;
if (control & IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT)
common += 1;
if (control & IEEE80211_MLC_BASIC_PRES_MED_SYNC_DELAY)
common += 2;
if (control & IEEE80211_MLC_BASIC_PRES_EML_CAPA)
common += 2;
if (control & IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP)
common += 2;
if (control & IEEE80211_MLC_BASIC_PRES_MLD_ID)
common += 1;
return get_unaligned_le16(common);
}
/**
* ieee80211_mle_get_mld_id - returns the MLD ID
* @data: pointer to the multi-link element
* Return: The MLD ID in the given multi-link element, or 0 if not present
*
* The element is assumed to be of the correct type (BASIC) and big enough,
* this must be checked using ieee80211_mle_type_ok().
*/
static inline u8 ieee80211_mle_get_mld_id(const u8 *data)
{
const struct ieee80211_multi_link_elem *mle = (const void *)data;
u16 control = le16_to_cpu(mle->control);
const u8 *common = mle->variable;
/*
* common points now at the beginning of
* ieee80211_mle_basic_common_info
*/
common += sizeof(struct ieee80211_mle_basic_common_info);
if (!(control & IEEE80211_MLC_BASIC_PRES_MLD_ID))
return 0;
if (control & IEEE80211_MLC_BASIC_PRES_LINK_ID)
common += 1;
if (control & IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT)
common += 1;
if (control & IEEE80211_MLC_BASIC_PRES_MED_SYNC_DELAY)
common += 2;
if (control & IEEE80211_MLC_BASIC_PRES_EML_CAPA)
common += 2;
if (control & IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP)
common += 2;
return *common;
}
/**
* ieee80211_mle_size_ok - validate multi-link element size
* @data: pointer to the element data
* @len: length of the containing element
* Return: whether or not the multi-link element size is OK
*/
static inline bool ieee80211_mle_size_ok(const u8 *data, size_t len)
{
const struct ieee80211_multi_link_elem *mle = (const void *)data;
u8 fixed = sizeof(*mle);
u8 common = 0;
bool check_common_len = false;
u16 control;
if (!data || len < fixed)
return false;
control = le16_to_cpu(mle->control);
switch (u16_get_bits(control, IEEE80211_ML_CONTROL_TYPE)) {
case IEEE80211_ML_CONTROL_TYPE_BASIC:
common += sizeof(struct ieee80211_mle_basic_common_info);
check_common_len = true;
if (control & IEEE80211_MLC_BASIC_PRES_LINK_ID)
common += 1;
if (control & IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT)
common += 1;
if (control & IEEE80211_MLC_BASIC_PRES_MED_SYNC_DELAY)
common += 2;
if (control & IEEE80211_MLC_BASIC_PRES_EML_CAPA)
common += 2;
if (control & IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP)
common += 2;
if (control & IEEE80211_MLC_BASIC_PRES_MLD_ID)
common += 1;
if (control & IEEE80211_MLC_BASIC_PRES_EXT_MLD_CAPA_OP)
common += 2;
break;
case IEEE80211_ML_CONTROL_TYPE_PREQ:
common += sizeof(struct ieee80211_mle_preq_common_info);
if (control & IEEE80211_MLC_PREQ_PRES_MLD_ID)
common += 1;
check_common_len = true;
break;
case IEEE80211_ML_CONTROL_TYPE_RECONF:
if (control & IEEE80211_MLC_RECONF_PRES_MLD_MAC_ADDR)
common += ETH_ALEN;
if (control & IEEE80211_MLC_RECONF_PRES_EML_CAPA)
common += 2;
if (control & IEEE80211_MLC_RECONF_PRES_MLD_CAPA_OP)
common += 2;
if (control & IEEE80211_MLC_RECONF_PRES_EXT_MLD_CAPA_OP)
common += 2;
break;
case IEEE80211_ML_CONTROL_TYPE_TDLS:
common += sizeof(struct ieee80211_mle_tdls_common_info);
check_common_len = true;
break;
case IEEE80211_ML_CONTROL_TYPE_PRIO_ACCESS:
common = ETH_ALEN + 1;
break;
default:
/* we don't know this type */
return true;
}
if (len < fixed + common)
return false;
if (!check_common_len)
return true;
/* if present, common length is the first octet there */
return mle->variable[0] >= common;
}
/**
* ieee80211_mle_type_ok - validate multi-link element type and size
* @data: pointer to the element data
* @type: expected type of the element
* @len: length of the containing element
* Return: whether or not the multi-link element type matches and size is OK
*/
static inline bool ieee80211_mle_type_ok(const u8 *data, u8 type, size_t len)
{
const struct ieee80211_multi_link_elem *mle = (const void *)data;
u16 control;
if (!ieee80211_mle_size_ok(data, len))
return false;
control = le16_to_cpu(mle->control);
if (u16_get_bits(control, IEEE80211_ML_CONTROL_TYPE) == type)
return true;
return false;
}
enum ieee80211_mle_subelems {
IEEE80211_MLE_SUBELEM_PER_STA_PROFILE = 0,
IEEE80211_MLE_SUBELEM_FRAGMENT = 254,
};
#define IEEE80211_MLE_STA_CONTROL_LINK_ID 0x000f
#define IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE 0x0010
#define IEEE80211_MLE_STA_CONTROL_STA_MAC_ADDR_PRESENT 0x0020
#define IEEE80211_MLE_STA_CONTROL_BEACON_INT_PRESENT 0x0040
#define IEEE80211_MLE_STA_CONTROL_TSF_OFFS_PRESENT 0x0080
#define IEEE80211_MLE_STA_CONTROL_DTIM_INFO_PRESENT 0x0100
#define IEEE80211_MLE_STA_CONTROL_NSTR_LINK_PAIR_PRESENT 0x0200
#define IEEE80211_MLE_STA_CONTROL_NSTR_BITMAP_SIZE 0x0400
#define IEEE80211_MLE_STA_CONTROL_BSS_PARAM_CHANGE_CNT_PRESENT 0x0800
struct ieee80211_mle_per_sta_profile {
__le16 control;
u8 sta_info_len;
u8 variable[];
} __packed;
/**
* ieee80211_mle_basic_sta_prof_size_ok - validate basic multi-link element sta
* profile size
* @data: pointer to the sub element data
* @len: length of the containing sub element
* Return: %true if the STA profile is large enough, %false otherwise
*/
static inline bool ieee80211_mle_basic_sta_prof_size_ok(const u8 *data,
size_t len)
{
const struct ieee80211_mle_per_sta_profile *prof = (const void *)data;
u16 control;
u8 fixed = sizeof(*prof);
u8 info_len = 1;
if (len < fixed)
return false;
control = le16_to_cpu(prof->control);
if (control & IEEE80211_MLE_STA_CONTROL_STA_MAC_ADDR_PRESENT)
info_len += 6;
if (control & IEEE80211_MLE_STA_CONTROL_BEACON_INT_PRESENT)
info_len += 2;
if (control & IEEE80211_MLE_STA_CONTROL_TSF_OFFS_PRESENT)
info_len += 8;
if (control & IEEE80211_MLE_STA_CONTROL_DTIM_INFO_PRESENT)
info_len += 2;
if (control & IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE &&
control & IEEE80211_MLE_STA_CONTROL_NSTR_LINK_PAIR_PRESENT) {
if (control & IEEE80211_MLE_STA_CONTROL_NSTR_BITMAP_SIZE)
info_len += 2;
else
info_len += 1;
}
if (control & IEEE80211_MLE_STA_CONTROL_BSS_PARAM_CHANGE_CNT_PRESENT)
info_len += 1;
return prof->sta_info_len >= info_len &&
fixed + prof->sta_info_len - 1 <= len;
}
/**
* ieee80211_mle_basic_sta_prof_bss_param_ch_cnt - get per-STA profile BSS
* parameter change count
* @prof: the per-STA profile, having been checked with
* ieee80211_mle_basic_sta_prof_size_ok() for the correct length
*
* Return: The BSS parameter change count value if present, 0 otherwise.
*/
static inline u8
ieee80211_mle_basic_sta_prof_bss_param_ch_cnt(const struct ieee80211_mle_per_sta_profile *prof)
{
u16 control = le16_to_cpu(prof->control);
const u8 *pos = prof->variable;
if (!(control & IEEE80211_MLE_STA_CONTROL_BSS_PARAM_CHANGE_CNT_PRESENT))
return 0;
if (control & IEEE80211_MLE_STA_CONTROL_STA_MAC_ADDR_PRESENT)
pos += 6;
if (control & IEEE80211_MLE_STA_CONTROL_BEACON_INT_PRESENT)
pos += 2;
if (control & IEEE80211_MLE_STA_CONTROL_TSF_OFFS_PRESENT)
pos += 8;
if (control & IEEE80211_MLE_STA_CONTROL_DTIM_INFO_PRESENT)
pos += 2;
if (control & IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE &&
control & IEEE80211_MLE_STA_CONTROL_NSTR_LINK_PAIR_PRESENT) {
if (control & IEEE80211_MLE_STA_CONTROL_NSTR_BITMAP_SIZE)
pos += 2;
else
pos += 1;
}
return *pos;
}
#define IEEE80211_MLE_STA_RECONF_CONTROL_LINK_ID 0x000f
#define IEEE80211_MLE_STA_RECONF_CONTROL_COMPLETE_PROFILE 0x0010
#define IEEE80211_MLE_STA_RECONF_CONTROL_STA_MAC_ADDR_PRESENT 0x0020
#define IEEE80211_MLE_STA_RECONF_CONTROL_AP_REM_TIMER_PRESENT 0x0040
#define IEEE80211_MLE_STA_RECONF_CONTROL_OPERATION_TYPE 0x0780
#define IEEE80211_MLE_STA_RECONF_CONTROL_OPERATION_TYPE_AP_REM 0
#define IEEE80211_MLE_STA_RECONF_CONTROL_OPERATION_TYPE_OP_PARAM_UPDATE 1
#define IEEE80211_MLE_STA_RECONF_CONTROL_OPERATION_TYPE_ADD_LINK 2
#define IEEE80211_MLE_STA_RECONF_CONTROL_OPERATION_TYPE_DEL_LINK 3
#define IEEE80211_MLE_STA_RECONF_CONTROL_OPERATION_TYPE_NSTR_STATUS 4
#define IEEE80211_MLE_STA_RECONF_CONTROL_OPERATION_PARAMS_PRESENT 0x0800
/**
* ieee80211_mle_reconf_sta_prof_size_ok - validate reconfiguration multi-link
* element sta profile size.
* @data: pointer to the sub element data
* @len: length of the containing sub element
* Return: %true if the STA profile is large enough, %false otherwise
*/
static inline bool ieee80211_mle_reconf_sta_prof_size_ok(const u8 *data,
size_t len)
{
const struct ieee80211_mle_per_sta_profile *prof = (const void *)data;
u16 control;
u8 fixed = sizeof(*prof);
u8 info_len = 1;
if (len < fixed)
return false;
control = le16_to_cpu(prof->control);
if (control & IEEE80211_MLE_STA_RECONF_CONTROL_STA_MAC_ADDR_PRESENT)
info_len += ETH_ALEN;
if (control & IEEE80211_MLE_STA_RECONF_CONTROL_AP_REM_TIMER_PRESENT)
info_len += 2;
if (control & IEEE80211_MLE_STA_RECONF_CONTROL_OPERATION_PARAMS_PRESENT)
info_len += 2;
return prof->sta_info_len >= info_len &&
fixed + prof->sta_info_len - 1 <= len;
}
#define IEEE80211_MLE_STA_EPCS_CONTROL_LINK_ID 0x000f
#define IEEE80211_EPCS_ENA_RESP_BODY_LEN 3
static inline bool ieee80211_tid_to_link_map_size_ok(const u8 *data, size_t len)
{
const struct ieee80211_ttlm_elem *t2l = (const void *)data;
u8 control, fixed = sizeof(*t2l), elem_len = 0;
if (len < fixed)
return false;
control = t2l->control;
if (control & IEEE80211_TTLM_CONTROL_SWITCH_TIME_PRESENT)
elem_len += 2;
if (control & IEEE80211_TTLM_CONTROL_EXPECTED_DUR_PRESENT)
elem_len += 3;
if (!(control & IEEE80211_TTLM_CONTROL_DEF_LINK_MAP)) {
u8 bm_size;
elem_len += 1;
if (len < fixed + elem_len)
return false;
if (control & IEEE80211_TTLM_CONTROL_LINK_MAP_SIZE)
bm_size = 1;
else
bm_size = 2;
elem_len += hweight8(t2l->optional[0]) * bm_size;
}
return len >= fixed + elem_len;
}
/**
* ieee80211_emlsr_pad_delay_in_us - Fetch the EMLSR Padding delay
* in microseconds
* @eml_cap: EML capabilities field value from common info field of
* the Multi-link element
* Return: the EMLSR Padding delay (in microseconds) encoded in the
* EML Capabilities field
*/
static inline u32 ieee80211_emlsr_pad_delay_in_us(u16 eml_cap)
{
/* IEEE Std 802.11be-2024 Table 9-417i—Encoding of the EMLSR
* Padding Delay subfield.
*/
u32 pad_delay = u16_get_bits(eml_cap,
IEEE80211_EML_CAP_EMLSR_PADDING_DELAY);
if (!pad_delay ||
pad_delay > IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_256US)
return 0;
return 32 * (1 << (pad_delay - 1));
}
/**
* ieee80211_emlsr_trans_delay_in_us - Fetch the EMLSR Transition
* delay in microseconds
* @eml_cap: EML capabilities field value from common info field of
* the Multi-link element
* Return: the EMLSR Transition delay (in microseconds) encoded in the
* EML Capabilities field
*/
static inline u32 ieee80211_emlsr_trans_delay_in_us(u16 eml_cap)
{
/* IEEE Std 802.11be-2024 Table 9-417j—Encoding of the EMLSR
* Transition Delay subfield.
*/
u32 trans_delay =
u16_get_bits(eml_cap,
IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY);
/* invalid values also just use 0 */
if (!trans_delay ||
trans_delay > IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_256US)
return 0;
return 16 * (1 << (trans_delay - 1));
}
/**
* ieee80211_eml_trans_timeout_in_us - Fetch the EMLSR Transition
* timeout value in microseconds
* @eml_cap: EML capabilities field value from common info field of
* the Multi-link element
* Return: the EMLSR Transition timeout (in microseconds) encoded in
* the EML Capabilities field
*/
static inline u32 ieee80211_eml_trans_timeout_in_us(u16 eml_cap)
{
/* IEEE Std 802.11be-2024 Table 9-417m—Encoding of the
* Transition Timeout subfield.
*/
u8 timeout = u16_get_bits(eml_cap,
IEEE80211_EML_CAP_TRANSITION_TIMEOUT);
/* invalid values also just use 0 */
if (!timeout || timeout > IEEE80211_EML_CAP_TRANSITION_TIMEOUT_128TU)
return 0;
return 128 * (1 << (timeout - 1));
}
#define for_each_mle_subelement(_elem, _data, _len) \
if (ieee80211_mle_size_ok(_data, _len)) \
for_each_element(_elem, \
_data + ieee80211_mle_common_size(_data),\
_len - ieee80211_mle_common_size(_data))
#endif /* LINUX_IEEE80211_H */
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