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wifi: ieee80211: split S1G definitions out
The ieee80211.h file has gotten very long, continue splitting it by putting S1G definitions into a separate file. Link: https://patch.msgid.link/20251105153843.82c0bddee6e3.Ic6646615286dad240b42e31e9d428c7e4ea40ce0@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
575
include/linux/ieee80211-s1g.h
Normal file
575
include/linux/ieee80211-s1g.h
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@@ -0,0 +1,575 @@
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* IEEE 802.11 S1G definitions
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*
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* Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
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* <jkmaline@cc.hut.fi>
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* Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
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* Copyright (c) 2005, Devicescape Software, Inc.
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* Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
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* Copyright (c) 2013 - 2014 Intel Mobile Communications GmbH
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* Copyright (c) 2016 - 2017 Intel Deutschland GmbH
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* Copyright (c) 2018 - 2025 Intel Corporation
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*/
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#ifndef LINUX_IEEE80211_S1G_H
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#define LINUX_IEEE80211_S1G_H
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#include <linux/types.h>
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#include <linux/if_ether.h>
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/* bits unique to S1G beacon frame control */
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#define IEEE80211_S1G_BCN_NEXT_TBTT 0x100
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#define IEEE80211_S1G_BCN_CSSID 0x200
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#define IEEE80211_S1G_BCN_ANO 0x400
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/* see 802.11ah-2016 9.9 NDP CMAC frames */
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#define IEEE80211_S1G_1MHZ_NDP_BITS 25
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#define IEEE80211_S1G_1MHZ_NDP_BYTES 4
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#define IEEE80211_S1G_2MHZ_NDP_BITS 37
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#define IEEE80211_S1G_2MHZ_NDP_BYTES 5
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/**
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* ieee80211_is_s1g_beacon - check if IEEE80211_FTYPE_EXT &&
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* IEEE80211_STYPE_S1G_BEACON
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* @fc: frame control bytes in little-endian byteorder
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* Return: whether or not the frame is an S1G beacon
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*/
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static inline bool ieee80211_is_s1g_beacon(__le16 fc)
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{
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return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE |
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IEEE80211_FCTL_STYPE)) ==
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cpu_to_le16(IEEE80211_FTYPE_EXT | IEEE80211_STYPE_S1G_BEACON);
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}
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/**
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* ieee80211_s1g_has_next_tbtt - check if IEEE80211_S1G_BCN_NEXT_TBTT
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* @fc: frame control bytes in little-endian byteorder
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* Return: whether or not the frame contains the variable-length
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* next TBTT field
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*/
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static inline bool ieee80211_s1g_has_next_tbtt(__le16 fc)
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{
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return ieee80211_is_s1g_beacon(fc) &&
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(fc & cpu_to_le16(IEEE80211_S1G_BCN_NEXT_TBTT));
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}
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/**
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* ieee80211_s1g_has_ano - check if IEEE80211_S1G_BCN_ANO
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* @fc: frame control bytes in little-endian byteorder
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* Return: whether or not the frame contains the variable-length
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* ANO field
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*/
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static inline bool ieee80211_s1g_has_ano(__le16 fc)
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{
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return ieee80211_is_s1g_beacon(fc) &&
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(fc & cpu_to_le16(IEEE80211_S1G_BCN_ANO));
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}
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/**
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* ieee80211_s1g_has_cssid - check if IEEE80211_S1G_BCN_CSSID
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* @fc: frame control bytes in little-endian byteorder
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* Return: whether or not the frame contains the variable-length
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* compressed SSID field
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*/
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static inline bool ieee80211_s1g_has_cssid(__le16 fc)
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{
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return ieee80211_is_s1g_beacon(fc) &&
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(fc & cpu_to_le16(IEEE80211_S1G_BCN_CSSID));
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}
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/**
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* enum ieee80211_s1g_chanwidth - S1G channel widths
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* These are defined in IEEE802.11-2016ah Table 10-20
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* as BSS Channel Width
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*
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* @IEEE80211_S1G_CHANWIDTH_1MHZ: 1MHz operating channel
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* @IEEE80211_S1G_CHANWIDTH_2MHZ: 2MHz operating channel
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* @IEEE80211_S1G_CHANWIDTH_4MHZ: 4MHz operating channel
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* @IEEE80211_S1G_CHANWIDTH_8MHZ: 8MHz operating channel
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* @IEEE80211_S1G_CHANWIDTH_16MHZ: 16MHz operating channel
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*/
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enum ieee80211_s1g_chanwidth {
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IEEE80211_S1G_CHANWIDTH_1MHZ = 0,
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IEEE80211_S1G_CHANWIDTH_2MHZ = 1,
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IEEE80211_S1G_CHANWIDTH_4MHZ = 3,
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IEEE80211_S1G_CHANWIDTH_8MHZ = 7,
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IEEE80211_S1G_CHANWIDTH_16MHZ = 15,
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};
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/**
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* enum ieee80211_s1g_pri_chanwidth - S1G primary channel widths
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* described in IEEE80211-2024 Table 10-39.
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*
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* @IEEE80211_S1G_PRI_CHANWIDTH_2MHZ: 2MHz primary channel
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* @IEEE80211_S1G_PRI_CHANWIDTH_1MHZ: 1MHz primary channel
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*/
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enum ieee80211_s1g_pri_chanwidth {
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IEEE80211_S1G_PRI_CHANWIDTH_2MHZ = 0,
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IEEE80211_S1G_PRI_CHANWIDTH_1MHZ = 1,
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};
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/**
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* struct ieee80211_s1g_bcn_compat_ie - S1G Beacon Compatibility element
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* @compat_info: Compatibility Information
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* @beacon_int: Beacon Interval
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* @tsf_completion: TSF Completion
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*
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* This structure represents the payload of the "S1G Beacon
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* Compatibility element" as described in IEEE Std 802.11-2020 section
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* 9.4.2.196.
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*/
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struct ieee80211_s1g_bcn_compat_ie {
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__le16 compat_info;
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__le16 beacon_int;
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__le32 tsf_completion;
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} __packed;
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/**
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* struct ieee80211_s1g_oper_ie - S1G Operation element
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* @ch_width: S1G Operation Information Channel Width
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* @oper_class: S1G Operation Information Operating Class
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* @primary_ch: S1G Operation Information Primary Channel Number
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* @oper_ch: S1G Operation Information Channel Center Frequency
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* @basic_mcs_nss: Basic S1G-MCS and NSS Set
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*
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* This structure represents the payload of the "S1G Operation
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* element" as described in IEEE Std 802.11-2020 section 9.4.2.212.
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*/
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struct ieee80211_s1g_oper_ie {
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u8 ch_width;
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u8 oper_class;
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u8 primary_ch;
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u8 oper_ch;
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__le16 basic_mcs_nss;
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} __packed;
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/**
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* struct ieee80211_aid_response_ie - AID Response element
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* @aid: AID/Group AID
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* @switch_count: AID Switch Count
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* @response_int: AID Response Interval
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*
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* This structure represents the payload of the "AID Response element"
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* as described in IEEE Std 802.11-2020 section 9.4.2.194.
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*/
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struct ieee80211_aid_response_ie {
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__le16 aid;
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u8 switch_count;
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__le16 response_int;
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} __packed;
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struct ieee80211_s1g_cap {
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u8 capab_info[10];
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u8 supp_mcs_nss[5];
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} __packed;
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/**
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* ieee80211_s1g_optional_len - determine length of optional S1G beacon fields
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* @fc: frame control bytes in little-endian byteorder
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* Return: total length in bytes of the optional fixed-length fields
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*
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* S1G beacons may contain up to three optional fixed-length fields that
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* precede the variable-length elements. Whether these fields are present
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* is indicated by flags in the frame control field.
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*
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* From IEEE 802.11-2024 section 9.3.4.3:
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* - Next TBTT field may be 0 or 3 bytes
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* - Short SSID field may be 0 or 4 bytes
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* - Access Network Options (ANO) field may be 0 or 1 byte
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*/
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static inline size_t
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ieee80211_s1g_optional_len(__le16 fc)
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{
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size_t len = 0;
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if (ieee80211_s1g_has_next_tbtt(fc))
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len += 3;
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if (ieee80211_s1g_has_cssid(fc))
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len += 4;
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if (ieee80211_s1g_has_ano(fc))
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len += 1;
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return len;
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}
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/* S1G Capabilities Information field */
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#define IEEE80211_S1G_CAPABILITY_LEN 15
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#define S1G_CAP0_S1G_LONG BIT(0)
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#define S1G_CAP0_SGI_1MHZ BIT(1)
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#define S1G_CAP0_SGI_2MHZ BIT(2)
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#define S1G_CAP0_SGI_4MHZ BIT(3)
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#define S1G_CAP0_SGI_8MHZ BIT(4)
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#define S1G_CAP0_SGI_16MHZ BIT(5)
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#define S1G_CAP0_SUPP_CH_WIDTH GENMASK(7, 6)
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#define S1G_SUPP_CH_WIDTH_2 0
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#define S1G_SUPP_CH_WIDTH_4 1
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#define S1G_SUPP_CH_WIDTH_8 2
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#define S1G_SUPP_CH_WIDTH_16 3
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#define S1G_SUPP_CH_WIDTH_MAX(cap) ((1 << FIELD_GET(S1G_CAP0_SUPP_CH_WIDTH, \
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cap[0])) << 1)
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#define S1G_CAP1_RX_LDPC BIT(0)
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#define S1G_CAP1_TX_STBC BIT(1)
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#define S1G_CAP1_RX_STBC BIT(2)
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#define S1G_CAP1_SU_BFER BIT(3)
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#define S1G_CAP1_SU_BFEE BIT(4)
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#define S1G_CAP1_BFEE_STS GENMASK(7, 5)
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#define S1G_CAP2_SOUNDING_DIMENSIONS GENMASK(2, 0)
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#define S1G_CAP2_MU_BFER BIT(3)
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#define S1G_CAP2_MU_BFEE BIT(4)
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#define S1G_CAP2_PLUS_HTC_VHT BIT(5)
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#define S1G_CAP2_TRAVELING_PILOT GENMASK(7, 6)
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#define S1G_CAP3_RD_RESPONDER BIT(0)
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#define S1G_CAP3_HT_DELAYED_BA BIT(1)
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#define S1G_CAP3_MAX_MPDU_LEN BIT(2)
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#define S1G_CAP3_MAX_AMPDU_LEN_EXP GENMASK(4, 3)
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#define S1G_CAP3_MIN_MPDU_START GENMASK(7, 5)
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#define S1G_CAP4_UPLINK_SYNC BIT(0)
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#define S1G_CAP4_DYNAMIC_AID BIT(1)
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#define S1G_CAP4_BAT BIT(2)
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#define S1G_CAP4_TIME_ADE BIT(3)
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#define S1G_CAP4_NON_TIM BIT(4)
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#define S1G_CAP4_GROUP_AID BIT(5)
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#define S1G_CAP4_STA_TYPE GENMASK(7, 6)
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#define S1G_CAP5_CENT_AUTH_CONTROL BIT(0)
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#define S1G_CAP5_DIST_AUTH_CONTROL BIT(1)
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#define S1G_CAP5_AMSDU BIT(2)
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#define S1G_CAP5_AMPDU BIT(3)
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#define S1G_CAP5_ASYMMETRIC_BA BIT(4)
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#define S1G_CAP5_FLOW_CONTROL BIT(5)
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#define S1G_CAP5_SECTORIZED_BEAM GENMASK(7, 6)
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#define S1G_CAP6_OBSS_MITIGATION BIT(0)
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#define S1G_CAP6_FRAGMENT_BA BIT(1)
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#define S1G_CAP6_NDP_PS_POLL BIT(2)
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#define S1G_CAP6_RAW_OPERATION BIT(3)
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#define S1G_CAP6_PAGE_SLICING BIT(4)
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#define S1G_CAP6_TXOP_SHARING_IMP_ACK BIT(5)
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#define S1G_CAP6_VHT_LINK_ADAPT GENMASK(7, 6)
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#define S1G_CAP7_TACK_AS_PS_POLL BIT(0)
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#define S1G_CAP7_DUP_1MHZ BIT(1)
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#define S1G_CAP7_MCS_NEGOTIATION BIT(2)
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#define S1G_CAP7_1MHZ_CTL_RESPONSE_PREAMBLE BIT(3)
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#define S1G_CAP7_NDP_BFING_REPORT_POLL BIT(4)
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#define S1G_CAP7_UNSOLICITED_DYN_AID BIT(5)
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#define S1G_CAP7_SECTOR_TRAINING_OPERATION BIT(6)
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#define S1G_CAP7_TEMP_PS_MODE_SWITCH BIT(7)
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#define S1G_CAP8_TWT_GROUPING BIT(0)
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#define S1G_CAP8_BDT BIT(1)
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#define S1G_CAP8_COLOR GENMASK(4, 2)
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#define S1G_CAP8_TWT_REQUEST BIT(5)
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#define S1G_CAP8_TWT_RESPOND BIT(6)
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#define S1G_CAP8_PV1_FRAME BIT(7)
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#define S1G_CAP9_LINK_ADAPT_PER_CONTROL_RESPONSE BIT(0)
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#define S1G_OPER_CH_WIDTH_PRIMARY BIT(0)
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#define S1G_OPER_CH_WIDTH_OPER GENMASK(4, 1)
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#define S1G_OPER_CH_PRIMARY_LOCATION BIT(5)
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#define S1G_2M_PRIMARY_LOCATION_LOWER 0
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#define S1G_2M_PRIMARY_LOCATION_UPPER 1
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#define LISTEN_INT_USF GENMASK(15, 14)
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#define LISTEN_INT_UI GENMASK(13, 0)
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#define IEEE80211_MAX_USF FIELD_MAX(LISTEN_INT_USF)
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#define IEEE80211_MAX_UI FIELD_MAX(LISTEN_INT_UI)
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/* S1G encoding types */
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#define IEEE80211_S1G_TIM_ENC_MODE_BLOCK 0
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#define IEEE80211_S1G_TIM_ENC_MODE_SINGLE 1
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#define IEEE80211_S1G_TIM_ENC_MODE_OLB 2
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enum ieee80211_s1g_actioncode {
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WLAN_S1G_AID_SWITCH_REQUEST,
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WLAN_S1G_AID_SWITCH_RESPONSE,
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WLAN_S1G_SYNC_CONTROL,
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WLAN_S1G_STA_INFO_ANNOUNCE,
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WLAN_S1G_EDCA_PARAM_SET,
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WLAN_S1G_EL_OPERATION,
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WLAN_S1G_TWT_SETUP,
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WLAN_S1G_TWT_TEARDOWN,
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WLAN_S1G_SECT_GROUP_ID_LIST,
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WLAN_S1G_SECT_ID_FEEDBACK,
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WLAN_S1G_TWT_INFORMATION = 11,
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};
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/**
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* ieee80211_is_s1g_short_beacon - check if frame is an S1G short beacon
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* @fc: frame control bytes in little-endian byteorder
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* @variable: pointer to the beacon frame elements
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* @variable_len: length of the frame elements
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* Return: whether or not the frame is an S1G short beacon. As per
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* IEEE80211-2024 11.1.3.10.1, The S1G beacon compatibility element shall
|
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* always be present as the first element in beacon frames generated at a
|
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* TBTT (Target Beacon Transmission Time), so any frame not containing
|
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* this element must have been generated at a TSBTT (Target Short Beacon
|
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* Transmission Time) that is not a TBTT. Additionally, short beacons are
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* prohibited from containing the S1G beacon compatibility element as per
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* IEEE80211-2024 9.3.4.3 Table 9-76, so if we have an S1G beacon with
|
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* either no elements or the first element is not the beacon compatibility
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* element, we have a short beacon.
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*/
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static inline bool ieee80211_is_s1g_short_beacon(__le16 fc, const u8 *variable,
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size_t variable_len)
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{
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if (!ieee80211_is_s1g_beacon(fc))
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return false;
|
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/*
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* If the frame does not contain at least 1 element (this is perfectly
|
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* valid in a short beacon) and is an S1G beacon, we have a short
|
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* beacon.
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*/
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if (variable_len < 2)
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return true;
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return variable[0] != WLAN_EID_S1G_BCN_COMPAT;
|
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}
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struct s1g_tim_aid {
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u16 aid;
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u8 target_blk; /* Target block index */
|
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u8 target_subblk; /* Target subblock index */
|
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u8 target_subblk_bit; /* Target subblock bit */
|
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};
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struct s1g_tim_enc_block {
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u8 enc_mode;
|
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bool inverse;
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const u8 *ptr;
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u8 len;
|
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/*
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* For an OLB encoded block that spans multiple blocks, this
|
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* is the offset into the span described by that encoded block.
|
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*/
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u8 olb_blk_offset;
|
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};
|
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/*
|
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* Helper routines to quickly extract the length of an encoded block. Validation
|
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* is also performed to ensure the length extracted lies within the TIM.
|
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*/
|
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static inline int ieee80211_s1g_len_bitmap(const u8 *ptr, const u8 *end)
|
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{
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u8 blkmap;
|
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u8 n_subblks;
|
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if (ptr >= end)
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return -EINVAL;
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blkmap = *ptr;
|
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n_subblks = hweight8(blkmap);
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if (ptr + 1 + n_subblks > end)
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return -EINVAL;
|
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return 1 + n_subblks;
|
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}
|
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static inline int ieee80211_s1g_len_single(const u8 *ptr, const u8 *end)
|
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{
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return (ptr + 1 > end) ? -EINVAL : 1;
|
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}
|
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static inline int ieee80211_s1g_len_olb(const u8 *ptr, const u8 *end)
|
||||
{
|
||||
if (ptr >= end)
|
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return -EINVAL;
|
||||
|
||||
return (ptr + 1 + *ptr > end) ? -EINVAL : 1 + *ptr;
|
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}
|
||||
|
||||
/*
|
||||
* Enumerate all encoded blocks until we find the encoded block that describes
|
||||
* our target AID. OLB is a special case as a single encoded block can describe
|
||||
* multiple blocks as a single encoded block.
|
||||
*/
|
||||
static inline int ieee80211_s1g_find_target_block(struct s1g_tim_enc_block *enc,
|
||||
const struct s1g_tim_aid *aid,
|
||||
const u8 *ptr, const u8 *end)
|
||||
{
|
||||
/* need at least block-control octet */
|
||||
while (ptr + 1 <= end) {
|
||||
u8 ctrl = *ptr++;
|
||||
u8 mode = ctrl & 0x03;
|
||||
bool contains, inverse = ctrl & BIT(2);
|
||||
u8 span, blk_off = ctrl >> 3;
|
||||
int len;
|
||||
|
||||
switch (mode) {
|
||||
case IEEE80211_S1G_TIM_ENC_MODE_BLOCK:
|
||||
len = ieee80211_s1g_len_bitmap(ptr, end);
|
||||
contains = blk_off == aid->target_blk;
|
||||
break;
|
||||
case IEEE80211_S1G_TIM_ENC_MODE_SINGLE:
|
||||
len = ieee80211_s1g_len_single(ptr, end);
|
||||
contains = blk_off == aid->target_blk;
|
||||
break;
|
||||
case IEEE80211_S1G_TIM_ENC_MODE_OLB:
|
||||
len = ieee80211_s1g_len_olb(ptr, end);
|
||||
/*
|
||||
* An OLB encoded block can describe more then one
|
||||
* block, meaning an encoded OLB block can span more
|
||||
* then a single block.
|
||||
*/
|
||||
if (len > 0) {
|
||||
/* Minus one for the length octet */
|
||||
span = DIV_ROUND_UP(len - 1, 8);
|
||||
/*
|
||||
* Check if our target block lies within the
|
||||
* block span described by this encoded block.
|
||||
*/
|
||||
contains = (aid->target_blk >= blk_off) &&
|
||||
(aid->target_blk < blk_off + span);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
if (len < 0)
|
||||
return len;
|
||||
|
||||
if (contains) {
|
||||
enc->enc_mode = mode;
|
||||
enc->inverse = inverse;
|
||||
enc->ptr = ptr;
|
||||
enc->len = (u8)len;
|
||||
enc->olb_blk_offset = blk_off;
|
||||
return 0;
|
||||
}
|
||||
|
||||
ptr += len;
|
||||
}
|
||||
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
static inline bool ieee80211_s1g_parse_bitmap(struct s1g_tim_enc_block *enc,
|
||||
struct s1g_tim_aid *aid)
|
||||
{
|
||||
const u8 *ptr = enc->ptr;
|
||||
u8 blkmap = *ptr++;
|
||||
|
||||
/*
|
||||
* If our block bitmap does not contain a set bit that corresponds
|
||||
* to our AID, it could mean a variety of things depending on if
|
||||
* the encoding mode is inverted or not.
|
||||
*
|
||||
* 1. If inverted, it means the entire subblock is present and hence
|
||||
* our AID has been set.
|
||||
* 2. If not inverted, it means our subblock is not present and hence
|
||||
* it is all zero meaning our AID is not set.
|
||||
*/
|
||||
if (!(blkmap & BIT(aid->target_subblk)))
|
||||
return enc->inverse;
|
||||
|
||||
/*
|
||||
* Increment ptr by the number of set subblocks that appear before our
|
||||
* target subblock. If our target subblock is 0, do nothing as ptr
|
||||
* already points to our target subblock.
|
||||
*/
|
||||
if (aid->target_subblk)
|
||||
ptr += hweight8(blkmap & GENMASK(aid->target_subblk - 1, 0));
|
||||
|
||||
return !!(*ptr & BIT(aid->target_subblk_bit)) ^ enc->inverse;
|
||||
}
|
||||
|
||||
static inline bool ieee80211_s1g_parse_single(struct s1g_tim_enc_block *enc,
|
||||
struct s1g_tim_aid *aid)
|
||||
{
|
||||
/*
|
||||
* Single AID mode describes, as the name suggests, a single AID
|
||||
* within the block described by the encoded block. The octet
|
||||
* contains the 6 LSBs of the AID described in the block. The other
|
||||
* 2 bits are reserved. When inversed, every single AID described
|
||||
* by the current block have buffered traffic except for the AID
|
||||
* described in the single AID octet.
|
||||
*/
|
||||
return ((*enc->ptr & 0x3f) == (aid->aid & 0x3f)) ^ enc->inverse;
|
||||
}
|
||||
|
||||
static inline bool ieee80211_s1g_parse_olb(struct s1g_tim_enc_block *enc,
|
||||
struct s1g_tim_aid *aid)
|
||||
{
|
||||
const u8 *ptr = enc->ptr;
|
||||
u8 blk_len = *ptr++;
|
||||
/*
|
||||
* Given an OLB encoded block that describes multiple blocks,
|
||||
* calculate the offset into the span. Then calculate the
|
||||
* subblock location normally.
|
||||
*/
|
||||
u16 span_offset = aid->target_blk - enc->olb_blk_offset;
|
||||
u16 subblk_idx = span_offset * 8 + aid->target_subblk;
|
||||
|
||||
if (subblk_idx >= blk_len)
|
||||
return enc->inverse;
|
||||
|
||||
return !!(ptr[subblk_idx] & BIT(aid->target_subblk_bit)) ^ enc->inverse;
|
||||
}
|
||||
|
||||
/*
|
||||
* An S1G PVB has 3 non optional encoding types, each that can be inverted.
|
||||
* An S1G PVB is constructed with zero or more encoded block subfields. Each
|
||||
* encoded block represents a single "block" of AIDs (64), and each encoded
|
||||
* block can contain one of the 3 encoding types alongside a single bit for
|
||||
* whether the bits should be inverted.
|
||||
*
|
||||
* As the standard makes no guarantee about the ordering of encoded blocks,
|
||||
* we must parse every encoded block in the worst case scenario given an
|
||||
* AID that lies within the last block.
|
||||
*/
|
||||
static inline bool ieee80211_s1g_check_tim(const struct ieee80211_tim_ie *tim,
|
||||
u8 tim_len, u16 aid)
|
||||
{
|
||||
int err;
|
||||
struct s1g_tim_aid target_aid;
|
||||
struct s1g_tim_enc_block enc_blk;
|
||||
|
||||
if (tim_len < 3)
|
||||
return false;
|
||||
|
||||
target_aid.aid = aid;
|
||||
target_aid.target_blk = (aid >> 6) & 0x1f;
|
||||
target_aid.target_subblk = (aid >> 3) & 0x7;
|
||||
target_aid.target_subblk_bit = aid & 0x7;
|
||||
|
||||
/*
|
||||
* Find our AIDs target encoded block and fill &enc_blk with the
|
||||
* encoded blocks information. If no entry is found or an error
|
||||
* occurs return false.
|
||||
*/
|
||||
err = ieee80211_s1g_find_target_block(&enc_blk, &target_aid,
|
||||
tim->virtual_map,
|
||||
(const u8 *)tim + tim_len + 2);
|
||||
if (err)
|
||||
return false;
|
||||
|
||||
switch (enc_blk.enc_mode) {
|
||||
case IEEE80211_S1G_TIM_ENC_MODE_BLOCK:
|
||||
return ieee80211_s1g_parse_bitmap(&enc_blk, &target_aid);
|
||||
case IEEE80211_S1G_TIM_ENC_MODE_SINGLE:
|
||||
return ieee80211_s1g_parse_single(&enc_blk, &target_aid);
|
||||
case IEEE80211_S1G_TIM_ENC_MODE_OLB:
|
||||
return ieee80211_s1g_parse_olb(&enc_blk, &target_aid);
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* LINUX_IEEE80211_H */
|
||||
@@ -109,17 +109,6 @@
|
||||
#define IEEE80211_STYPE_DMG_BEACON 0x0000
|
||||
#define IEEE80211_STYPE_S1G_BEACON 0x0010
|
||||
|
||||
/* bits unique to S1G beacon */
|
||||
#define IEEE80211_S1G_BCN_NEXT_TBTT 0x100
|
||||
#define IEEE80211_S1G_BCN_CSSID 0x200
|
||||
#define IEEE80211_S1G_BCN_ANO 0x400
|
||||
|
||||
/* see 802.11ah-2016 9.9 NDP CMAC frames */
|
||||
#define IEEE80211_S1G_1MHZ_NDP_BITS 25
|
||||
#define IEEE80211_S1G_1MHZ_NDP_BYTES 4
|
||||
#define IEEE80211_S1G_2MHZ_NDP_BITS 37
|
||||
#define IEEE80211_S1G_2MHZ_NDP_BYTES 5
|
||||
|
||||
#define IEEE80211_NDP_FTYPE_CTS 0
|
||||
#define IEEE80211_NDP_FTYPE_CF_END 0
|
||||
#define IEEE80211_NDP_FTYPE_PS_POLL 1
|
||||
@@ -221,11 +210,6 @@ static inline u16 ieee80211_sn_sub(u16 sn1, u16 sn2)
|
||||
#define IEEE80211_MAX_TIM_LEN 251
|
||||
#define IEEE80211_MAX_MESH_PEERINGS 63
|
||||
|
||||
/* S1G encoding types */
|
||||
#define IEEE80211_S1G_TIM_ENC_MODE_BLOCK 0
|
||||
#define IEEE80211_S1G_TIM_ENC_MODE_SINGLE 1
|
||||
#define IEEE80211_S1G_TIM_ENC_MODE_OLB 2
|
||||
|
||||
/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
|
||||
6.2.1.1.2.
|
||||
|
||||
@@ -604,55 +588,6 @@ static inline bool ieee80211_is_beacon(__le16 fc)
|
||||
cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
|
||||
}
|
||||
|
||||
/**
|
||||
* ieee80211_is_s1g_beacon - check if IEEE80211_FTYPE_EXT &&
|
||||
* IEEE80211_STYPE_S1G_BEACON
|
||||
* @fc: frame control bytes in little-endian byteorder
|
||||
* Return: whether or not the frame is an S1G beacon
|
||||
*/
|
||||
static inline bool ieee80211_is_s1g_beacon(__le16 fc)
|
||||
{
|
||||
return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE |
|
||||
IEEE80211_FCTL_STYPE)) ==
|
||||
cpu_to_le16(IEEE80211_FTYPE_EXT | IEEE80211_STYPE_S1G_BEACON);
|
||||
}
|
||||
|
||||
/**
|
||||
* ieee80211_s1g_has_next_tbtt - check if IEEE80211_S1G_BCN_NEXT_TBTT
|
||||
* @fc: frame control bytes in little-endian byteorder
|
||||
* Return: whether or not the frame contains the variable-length
|
||||
* next TBTT field
|
||||
*/
|
||||
static inline bool ieee80211_s1g_has_next_tbtt(__le16 fc)
|
||||
{
|
||||
return ieee80211_is_s1g_beacon(fc) &&
|
||||
(fc & cpu_to_le16(IEEE80211_S1G_BCN_NEXT_TBTT));
|
||||
}
|
||||
|
||||
/**
|
||||
* ieee80211_s1g_has_ano - check if IEEE80211_S1G_BCN_ANO
|
||||
* @fc: frame control bytes in little-endian byteorder
|
||||
* Return: whether or not the frame contains the variable-length
|
||||
* ANO field
|
||||
*/
|
||||
static inline bool ieee80211_s1g_has_ano(__le16 fc)
|
||||
{
|
||||
return ieee80211_is_s1g_beacon(fc) &&
|
||||
(fc & cpu_to_le16(IEEE80211_S1G_BCN_ANO));
|
||||
}
|
||||
|
||||
/**
|
||||
* ieee80211_s1g_has_cssid - check if IEEE80211_S1G_BCN_CSSID
|
||||
* @fc: frame control bytes in little-endian byteorder
|
||||
* Return: whether or not the frame contains the variable-length
|
||||
* compressed SSID field
|
||||
*/
|
||||
static inline bool ieee80211_s1g_has_cssid(__le16 fc)
|
||||
{
|
||||
return ieee80211_is_s1g_beacon(fc) &&
|
||||
(fc & cpu_to_le16(IEEE80211_S1G_BCN_CSSID));
|
||||
}
|
||||
|
||||
/**
|
||||
* ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
|
||||
* @fc: frame control bytes in little-endian byteorder
|
||||
@@ -984,37 +919,6 @@ struct ieee80211_tim_ie {
|
||||
};
|
||||
} __packed;
|
||||
|
||||
/**
|
||||
* enum ieee80211_s1g_chanwidth - S1G channel widths
|
||||
* These are defined in IEEE802.11-2016ah Table 10-20
|
||||
* as BSS Channel Width
|
||||
*
|
||||
* @IEEE80211_S1G_CHANWIDTH_1MHZ: 1MHz operating channel
|
||||
* @IEEE80211_S1G_CHANWIDTH_2MHZ: 2MHz operating channel
|
||||
* @IEEE80211_S1G_CHANWIDTH_4MHZ: 4MHz operating channel
|
||||
* @IEEE80211_S1G_CHANWIDTH_8MHZ: 8MHz operating channel
|
||||
* @IEEE80211_S1G_CHANWIDTH_16MHZ: 16MHz operating channel
|
||||
*/
|
||||
enum ieee80211_s1g_chanwidth {
|
||||
IEEE80211_S1G_CHANWIDTH_1MHZ = 0,
|
||||
IEEE80211_S1G_CHANWIDTH_2MHZ = 1,
|
||||
IEEE80211_S1G_CHANWIDTH_4MHZ = 3,
|
||||
IEEE80211_S1G_CHANWIDTH_8MHZ = 7,
|
||||
IEEE80211_S1G_CHANWIDTH_16MHZ = 15,
|
||||
};
|
||||
|
||||
/**
|
||||
* enum ieee80211_s1g_pri_chanwidth - S1G primary channel widths
|
||||
* described in IEEE80211-2024 Table 10-39.
|
||||
*
|
||||
* @IEEE80211_S1G_PRI_CHANWIDTH_2MHZ: 2MHz primary channel
|
||||
* @IEEE80211_S1G_PRI_CHANWIDTH_1MHZ: 1MHz primary channel
|
||||
*/
|
||||
enum ieee80211_s1g_pri_chanwidth {
|
||||
IEEE80211_S1G_PRI_CHANWIDTH_2MHZ = 0,
|
||||
IEEE80211_S1G_PRI_CHANWIDTH_1MHZ = 1,
|
||||
};
|
||||
|
||||
#define WLAN_SA_QUERY_TR_ID_LEN 2
|
||||
#define WLAN_MEMBERSHIP_LEN 8
|
||||
#define WLAN_USER_POSITION_LEN 16
|
||||
@@ -1042,61 +946,6 @@ struct ieee80211_addba_ext_ie {
|
||||
u8 data;
|
||||
} __packed;
|
||||
|
||||
/**
|
||||
* struct ieee80211_s1g_bcn_compat_ie - S1G Beacon Compatibility element
|
||||
* @compat_info: Compatibility Information
|
||||
* @beacon_int: Beacon Interval
|
||||
* @tsf_completion: TSF Completion
|
||||
*
|
||||
* This structure represents the payload of the "S1G Beacon
|
||||
* Compatibility element" as described in IEEE Std 802.11-2020 section
|
||||
* 9.4.2.196.
|
||||
*/
|
||||
struct ieee80211_s1g_bcn_compat_ie {
|
||||
__le16 compat_info;
|
||||
__le16 beacon_int;
|
||||
__le32 tsf_completion;
|
||||
} __packed;
|
||||
|
||||
/**
|
||||
* struct ieee80211_s1g_oper_ie - S1G Operation element
|
||||
* @ch_width: S1G Operation Information Channel Width
|
||||
* @oper_class: S1G Operation Information Operating Class
|
||||
* @primary_ch: S1G Operation Information Primary Channel Number
|
||||
* @oper_ch: S1G Operation Information Channel Center Frequency
|
||||
* @basic_mcs_nss: Basic S1G-MCS and NSS Set
|
||||
*
|
||||
* This structure represents the payload of the "S1G Operation
|
||||
* element" as described in IEEE Std 802.11-2020 section 9.4.2.212.
|
||||
*/
|
||||
struct ieee80211_s1g_oper_ie {
|
||||
u8 ch_width;
|
||||
u8 oper_class;
|
||||
u8 primary_ch;
|
||||
u8 oper_ch;
|
||||
__le16 basic_mcs_nss;
|
||||
} __packed;
|
||||
|
||||
/**
|
||||
* struct ieee80211_aid_response_ie - AID Response element
|
||||
* @aid: AID/Group AID
|
||||
* @switch_count: AID Switch Count
|
||||
* @response_int: AID Response Interval
|
||||
*
|
||||
* This structure represents the payload of the "AID Response element"
|
||||
* as described in IEEE Std 802.11-2020 section 9.4.2.194.
|
||||
*/
|
||||
struct ieee80211_aid_response_ie {
|
||||
__le16 aid;
|
||||
u8 switch_count;
|
||||
__le16 response_int;
|
||||
} __packed;
|
||||
|
||||
struct ieee80211_s1g_cap {
|
||||
u8 capab_info[10];
|
||||
u8 supp_mcs_nss[5];
|
||||
} __packed;
|
||||
|
||||
struct ieee80211_ext {
|
||||
__le16 frame_control;
|
||||
__le16 duration;
|
||||
@@ -1110,37 +959,6 @@ struct ieee80211_ext {
|
||||
} u;
|
||||
} __packed __aligned(2);
|
||||
|
||||
/**
|
||||
* ieee80211_s1g_optional_len - determine length of optional S1G beacon fields
|
||||
* @fc: frame control bytes in little-endian byteorder
|
||||
* Return: total length in bytes of the optional fixed-length fields
|
||||
*
|
||||
* S1G beacons may contain up to three optional fixed-length fields that
|
||||
* precede the variable-length elements. Whether these fields are present
|
||||
* is indicated by flags in the frame control field.
|
||||
*
|
||||
* From IEEE 802.11-2024 section 9.3.4.3:
|
||||
* - Next TBTT field may be 0 or 3 bytes
|
||||
* - Short SSID field may be 0 or 4 bytes
|
||||
* - Access Network Options (ANO) field may be 0 or 1 byte
|
||||
*/
|
||||
static inline size_t
|
||||
ieee80211_s1g_optional_len(__le16 fc)
|
||||
{
|
||||
size_t len = 0;
|
||||
|
||||
if (ieee80211_s1g_has_next_tbtt(fc))
|
||||
len += 3;
|
||||
|
||||
if (ieee80211_s1g_has_cssid(fc))
|
||||
len += 4;
|
||||
|
||||
if (ieee80211_s1g_has_ano(fc))
|
||||
len += 1;
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
/**
|
||||
* struct ieee80211_bss_load_elem - BSS Load elemen
|
||||
*
|
||||
@@ -1567,98 +1385,6 @@ struct ieee80211_p2p_noa_attr {
|
||||
#define IEEE80211_P2P_OPPPS_ENABLE_BIT BIT(7)
|
||||
#define IEEE80211_P2P_OPPPS_CTWINDOW_MASK 0x7F
|
||||
|
||||
/* S1G Capabilities Information field */
|
||||
#define IEEE80211_S1G_CAPABILITY_LEN 15
|
||||
|
||||
#define S1G_CAP0_S1G_LONG BIT(0)
|
||||
#define S1G_CAP0_SGI_1MHZ BIT(1)
|
||||
#define S1G_CAP0_SGI_2MHZ BIT(2)
|
||||
#define S1G_CAP0_SGI_4MHZ BIT(3)
|
||||
#define S1G_CAP0_SGI_8MHZ BIT(4)
|
||||
#define S1G_CAP0_SGI_16MHZ BIT(5)
|
||||
#define S1G_CAP0_SUPP_CH_WIDTH GENMASK(7, 6)
|
||||
|
||||
#define S1G_SUPP_CH_WIDTH_2 0
|
||||
#define S1G_SUPP_CH_WIDTH_4 1
|
||||
#define S1G_SUPP_CH_WIDTH_8 2
|
||||
#define S1G_SUPP_CH_WIDTH_16 3
|
||||
#define S1G_SUPP_CH_WIDTH_MAX(cap) ((1 << FIELD_GET(S1G_CAP0_SUPP_CH_WIDTH, \
|
||||
cap[0])) << 1)
|
||||
|
||||
#define S1G_CAP1_RX_LDPC BIT(0)
|
||||
#define S1G_CAP1_TX_STBC BIT(1)
|
||||
#define S1G_CAP1_RX_STBC BIT(2)
|
||||
#define S1G_CAP1_SU_BFER BIT(3)
|
||||
#define S1G_CAP1_SU_BFEE BIT(4)
|
||||
#define S1G_CAP1_BFEE_STS GENMASK(7, 5)
|
||||
|
||||
#define S1G_CAP2_SOUNDING_DIMENSIONS GENMASK(2, 0)
|
||||
#define S1G_CAP2_MU_BFER BIT(3)
|
||||
#define S1G_CAP2_MU_BFEE BIT(4)
|
||||
#define S1G_CAP2_PLUS_HTC_VHT BIT(5)
|
||||
#define S1G_CAP2_TRAVELING_PILOT GENMASK(7, 6)
|
||||
|
||||
#define S1G_CAP3_RD_RESPONDER BIT(0)
|
||||
#define S1G_CAP3_HT_DELAYED_BA BIT(1)
|
||||
#define S1G_CAP3_MAX_MPDU_LEN BIT(2)
|
||||
#define S1G_CAP3_MAX_AMPDU_LEN_EXP GENMASK(4, 3)
|
||||
#define S1G_CAP3_MIN_MPDU_START GENMASK(7, 5)
|
||||
|
||||
#define S1G_CAP4_UPLINK_SYNC BIT(0)
|
||||
#define S1G_CAP4_DYNAMIC_AID BIT(1)
|
||||
#define S1G_CAP4_BAT BIT(2)
|
||||
#define S1G_CAP4_TIME_ADE BIT(3)
|
||||
#define S1G_CAP4_NON_TIM BIT(4)
|
||||
#define S1G_CAP4_GROUP_AID BIT(5)
|
||||
#define S1G_CAP4_STA_TYPE GENMASK(7, 6)
|
||||
|
||||
#define S1G_CAP5_CENT_AUTH_CONTROL BIT(0)
|
||||
#define S1G_CAP5_DIST_AUTH_CONTROL BIT(1)
|
||||
#define S1G_CAP5_AMSDU BIT(2)
|
||||
#define S1G_CAP5_AMPDU BIT(3)
|
||||
#define S1G_CAP5_ASYMMETRIC_BA BIT(4)
|
||||
#define S1G_CAP5_FLOW_CONTROL BIT(5)
|
||||
#define S1G_CAP5_SECTORIZED_BEAM GENMASK(7, 6)
|
||||
|
||||
#define S1G_CAP6_OBSS_MITIGATION BIT(0)
|
||||
#define S1G_CAP6_FRAGMENT_BA BIT(1)
|
||||
#define S1G_CAP6_NDP_PS_POLL BIT(2)
|
||||
#define S1G_CAP6_RAW_OPERATION BIT(3)
|
||||
#define S1G_CAP6_PAGE_SLICING BIT(4)
|
||||
#define S1G_CAP6_TXOP_SHARING_IMP_ACK BIT(5)
|
||||
#define S1G_CAP6_VHT_LINK_ADAPT GENMASK(7, 6)
|
||||
|
||||
#define S1G_CAP7_TACK_AS_PS_POLL BIT(0)
|
||||
#define S1G_CAP7_DUP_1MHZ BIT(1)
|
||||
#define S1G_CAP7_MCS_NEGOTIATION BIT(2)
|
||||
#define S1G_CAP7_1MHZ_CTL_RESPONSE_PREAMBLE BIT(3)
|
||||
#define S1G_CAP7_NDP_BFING_REPORT_POLL BIT(4)
|
||||
#define S1G_CAP7_UNSOLICITED_DYN_AID BIT(5)
|
||||
#define S1G_CAP7_SECTOR_TRAINING_OPERATION BIT(6)
|
||||
#define S1G_CAP7_TEMP_PS_MODE_SWITCH BIT(7)
|
||||
|
||||
#define S1G_CAP8_TWT_GROUPING BIT(0)
|
||||
#define S1G_CAP8_BDT BIT(1)
|
||||
#define S1G_CAP8_COLOR GENMASK(4, 2)
|
||||
#define S1G_CAP8_TWT_REQUEST BIT(5)
|
||||
#define S1G_CAP8_TWT_RESPOND BIT(6)
|
||||
#define S1G_CAP8_PV1_FRAME BIT(7)
|
||||
|
||||
#define S1G_CAP9_LINK_ADAPT_PER_CONTROL_RESPONSE BIT(0)
|
||||
|
||||
#define S1G_OPER_CH_WIDTH_PRIMARY BIT(0)
|
||||
#define S1G_OPER_CH_WIDTH_OPER GENMASK(4, 1)
|
||||
#define S1G_OPER_CH_PRIMARY_LOCATION BIT(5)
|
||||
|
||||
#define S1G_2M_PRIMARY_LOCATION_LOWER 0
|
||||
#define S1G_2M_PRIMARY_LOCATION_UPPER 1
|
||||
|
||||
#define LISTEN_INT_USF GENMASK(15, 14)
|
||||
#define LISTEN_INT_UI GENMASK(13, 0)
|
||||
|
||||
#define IEEE80211_MAX_USF FIELD_MAX(LISTEN_INT_USF)
|
||||
#define IEEE80211_MAX_UI FIELD_MAX(LISTEN_INT_UI)
|
||||
|
||||
/* Authentication algorithms */
|
||||
#define WLAN_AUTH_OPEN 0
|
||||
#define WLAN_AUTH_SHARED_KEY 1
|
||||
@@ -2189,20 +1915,6 @@ enum ieee80211_key_len {
|
||||
WLAN_KEY_LEN_BIP_GMAC_256 = 32,
|
||||
};
|
||||
|
||||
enum ieee80211_s1g_actioncode {
|
||||
WLAN_S1G_AID_SWITCH_REQUEST,
|
||||
WLAN_S1G_AID_SWITCH_RESPONSE,
|
||||
WLAN_S1G_SYNC_CONTROL,
|
||||
WLAN_S1G_STA_INFO_ANNOUNCE,
|
||||
WLAN_S1G_EDCA_PARAM_SET,
|
||||
WLAN_S1G_EL_OPERATION,
|
||||
WLAN_S1G_TWT_SETUP,
|
||||
WLAN_S1G_TWT_TEARDOWN,
|
||||
WLAN_S1G_SECT_GROUP_ID_LIST,
|
||||
WLAN_S1G_SECT_ID_FEEDBACK,
|
||||
WLAN_S1G_TWT_INFORMATION = 11,
|
||||
};
|
||||
|
||||
/* Radio measurement action codes as defined in IEEE 802.11-2024 - Table 9-470 */
|
||||
enum ieee80211_radio_measurement_actioncode {
|
||||
WLAN_RM_ACTION_RADIO_MEASUREMENT_REQUEST = 0,
|
||||
@@ -2877,254 +2589,6 @@ static inline bool __ieee80211_check_tim(const struct ieee80211_tim_ie *tim,
|
||||
return !!(tim->virtual_map[index] & mask);
|
||||
}
|
||||
|
||||
struct s1g_tim_aid {
|
||||
u16 aid;
|
||||
u8 target_blk; /* Target block index */
|
||||
u8 target_subblk; /* Target subblock index */
|
||||
u8 target_subblk_bit; /* Target subblock bit */
|
||||
};
|
||||
|
||||
struct s1g_tim_enc_block {
|
||||
u8 enc_mode;
|
||||
bool inverse;
|
||||
const u8 *ptr;
|
||||
u8 len;
|
||||
|
||||
/*
|
||||
* For an OLB encoded block that spans multiple blocks, this
|
||||
* is the offset into the span described by that encoded block.
|
||||
*/
|
||||
u8 olb_blk_offset;
|
||||
};
|
||||
|
||||
/*
|
||||
* Helper routines to quickly extract the length of an encoded block. Validation
|
||||
* is also performed to ensure the length extracted lies within the TIM.
|
||||
*/
|
||||
|
||||
static inline int ieee80211_s1g_len_bitmap(const u8 *ptr, const u8 *end)
|
||||
{
|
||||
u8 blkmap;
|
||||
u8 n_subblks;
|
||||
|
||||
if (ptr >= end)
|
||||
return -EINVAL;
|
||||
|
||||
blkmap = *ptr;
|
||||
n_subblks = hweight8(blkmap);
|
||||
|
||||
if (ptr + 1 + n_subblks > end)
|
||||
return -EINVAL;
|
||||
|
||||
return 1 + n_subblks;
|
||||
}
|
||||
|
||||
static inline int ieee80211_s1g_len_single(const u8 *ptr, const u8 *end)
|
||||
{
|
||||
return (ptr + 1 > end) ? -EINVAL : 1;
|
||||
}
|
||||
|
||||
static inline int ieee80211_s1g_len_olb(const u8 *ptr, const u8 *end)
|
||||
{
|
||||
if (ptr >= end)
|
||||
return -EINVAL;
|
||||
|
||||
return (ptr + 1 + *ptr > end) ? -EINVAL : 1 + *ptr;
|
||||
}
|
||||
|
||||
/*
|
||||
* Enumerate all encoded blocks until we find the encoded block that describes
|
||||
* our target AID. OLB is a special case as a single encoded block can describe
|
||||
* multiple blocks as a single encoded block.
|
||||
*/
|
||||
static inline int ieee80211_s1g_find_target_block(struct s1g_tim_enc_block *enc,
|
||||
const struct s1g_tim_aid *aid,
|
||||
const u8 *ptr, const u8 *end)
|
||||
{
|
||||
/* need at least block-control octet */
|
||||
while (ptr + 1 <= end) {
|
||||
u8 ctrl = *ptr++;
|
||||
u8 mode = ctrl & 0x03;
|
||||
bool contains, inverse = ctrl & BIT(2);
|
||||
u8 span, blk_off = ctrl >> 3;
|
||||
int len;
|
||||
|
||||
switch (mode) {
|
||||
case IEEE80211_S1G_TIM_ENC_MODE_BLOCK:
|
||||
len = ieee80211_s1g_len_bitmap(ptr, end);
|
||||
contains = blk_off == aid->target_blk;
|
||||
break;
|
||||
case IEEE80211_S1G_TIM_ENC_MODE_SINGLE:
|
||||
len = ieee80211_s1g_len_single(ptr, end);
|
||||
contains = blk_off == aid->target_blk;
|
||||
break;
|
||||
case IEEE80211_S1G_TIM_ENC_MODE_OLB:
|
||||
len = ieee80211_s1g_len_olb(ptr, end);
|
||||
/*
|
||||
* An OLB encoded block can describe more then one
|
||||
* block, meaning an encoded OLB block can span more
|
||||
* then a single block.
|
||||
*/
|
||||
if (len > 0) {
|
||||
/* Minus one for the length octet */
|
||||
span = DIV_ROUND_UP(len - 1, 8);
|
||||
/*
|
||||
* Check if our target block lies within the
|
||||
* block span described by this encoded block.
|
||||
*/
|
||||
contains = (aid->target_blk >= blk_off) &&
|
||||
(aid->target_blk < blk_off + span);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
if (len < 0)
|
||||
return len;
|
||||
|
||||
if (contains) {
|
||||
enc->enc_mode = mode;
|
||||
enc->inverse = inverse;
|
||||
enc->ptr = ptr;
|
||||
enc->len = (u8)len;
|
||||
enc->olb_blk_offset = blk_off;
|
||||
return 0;
|
||||
}
|
||||
|
||||
ptr += len;
|
||||
}
|
||||
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
static inline bool ieee80211_s1g_parse_bitmap(struct s1g_tim_enc_block *enc,
|
||||
struct s1g_tim_aid *aid)
|
||||
{
|
||||
const u8 *ptr = enc->ptr;
|
||||
u8 blkmap = *ptr++;
|
||||
|
||||
/*
|
||||
* If our block bitmap does not contain a set bit that corresponds
|
||||
* to our AID, it could mean a variety of things depending on if
|
||||
* the encoding mode is inverted or not.
|
||||
*
|
||||
* 1. If inverted, it means the entire subblock is present and hence
|
||||
* our AID has been set.
|
||||
* 2. If not inverted, it means our subblock is not present and hence
|
||||
* it is all zero meaning our AID is not set.
|
||||
*/
|
||||
if (!(blkmap & BIT(aid->target_subblk)))
|
||||
return enc->inverse;
|
||||
|
||||
/*
|
||||
* Increment ptr by the number of set subblocks that appear before our
|
||||
* target subblock. If our target subblock is 0, do nothing as ptr
|
||||
* already points to our target subblock.
|
||||
*/
|
||||
if (aid->target_subblk)
|
||||
ptr += hweight8(blkmap & GENMASK(aid->target_subblk - 1, 0));
|
||||
|
||||
return !!(*ptr & BIT(aid->target_subblk_bit)) ^ enc->inverse;
|
||||
}
|
||||
|
||||
static inline bool ieee80211_s1g_parse_single(struct s1g_tim_enc_block *enc,
|
||||
struct s1g_tim_aid *aid)
|
||||
{
|
||||
/*
|
||||
* Single AID mode describes, as the name suggests, a single AID
|
||||
* within the block described by the encoded block. The octet
|
||||
* contains the 6 LSBs of the AID described in the block. The other
|
||||
* 2 bits are reserved. When inversed, every single AID described
|
||||
* by the current block have buffered traffic except for the AID
|
||||
* described in the single AID octet.
|
||||
*/
|
||||
return ((*enc->ptr & 0x3f) == (aid->aid & 0x3f)) ^ enc->inverse;
|
||||
}
|
||||
|
||||
static inline bool ieee80211_s1g_parse_olb(struct s1g_tim_enc_block *enc,
|
||||
struct s1g_tim_aid *aid)
|
||||
{
|
||||
const u8 *ptr = enc->ptr;
|
||||
u8 blk_len = *ptr++;
|
||||
/*
|
||||
* Given an OLB encoded block that describes multiple blocks,
|
||||
* calculate the offset into the span. Then calculate the
|
||||
* subblock location normally.
|
||||
*/
|
||||
u16 span_offset = aid->target_blk - enc->olb_blk_offset;
|
||||
u16 subblk_idx = span_offset * 8 + aid->target_subblk;
|
||||
|
||||
if (subblk_idx >= blk_len)
|
||||
return enc->inverse;
|
||||
|
||||
return !!(ptr[subblk_idx] & BIT(aid->target_subblk_bit)) ^ enc->inverse;
|
||||
}
|
||||
|
||||
/*
|
||||
* An S1G PVB has 3 non optional encoding types, each that can be inverted.
|
||||
* An S1G PVB is constructed with zero or more encoded block subfields. Each
|
||||
* encoded block represents a single "block" of AIDs (64), and each encoded
|
||||
* block can contain one of the 3 encoding types alongside a single bit for
|
||||
* whether the bits should be inverted.
|
||||
*
|
||||
* As the standard makes no guarantee about the ordering of encoded blocks,
|
||||
* we must parse every encoded block in the worst case scenario given an
|
||||
* AID that lies within the last block.
|
||||
*/
|
||||
static inline bool ieee80211_s1g_check_tim(const struct ieee80211_tim_ie *tim,
|
||||
u8 tim_len, u16 aid)
|
||||
{
|
||||
int err;
|
||||
struct s1g_tim_aid target_aid;
|
||||
struct s1g_tim_enc_block enc_blk;
|
||||
|
||||
if (tim_len < 3)
|
||||
return false;
|
||||
|
||||
target_aid.aid = aid;
|
||||
target_aid.target_blk = (aid >> 6) & 0x1f;
|
||||
target_aid.target_subblk = (aid >> 3) & 0x7;
|
||||
target_aid.target_subblk_bit = aid & 0x7;
|
||||
|
||||
/*
|
||||
* Find our AIDs target encoded block and fill &enc_blk with the
|
||||
* encoded blocks information. If no entry is found or an error
|
||||
* occurs return false.
|
||||
*/
|
||||
err = ieee80211_s1g_find_target_block(&enc_blk, &target_aid,
|
||||
tim->virtual_map,
|
||||
(const u8 *)tim + tim_len + 2);
|
||||
if (err)
|
||||
return false;
|
||||
|
||||
switch (enc_blk.enc_mode) {
|
||||
case IEEE80211_S1G_TIM_ENC_MODE_BLOCK:
|
||||
return ieee80211_s1g_parse_bitmap(&enc_blk, &target_aid);
|
||||
case IEEE80211_S1G_TIM_ENC_MODE_SINGLE:
|
||||
return ieee80211_s1g_parse_single(&enc_blk, &target_aid);
|
||||
case IEEE80211_S1G_TIM_ENC_MODE_OLB:
|
||||
return ieee80211_s1g_parse_olb(&enc_blk, &target_aid);
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* ieee80211_check_tim - check if AID bit is set in TIM
|
||||
* @tim: the TIM IE
|
||||
* @tim_len: length of the TIM IE
|
||||
* @aid: the AID to look for
|
||||
* @s1g: whether the TIM is from an S1G PPDU
|
||||
* Return: whether or not traffic is indicated in the TIM for the given AID
|
||||
*/
|
||||
static inline bool ieee80211_check_tim(const struct ieee80211_tim_ie *tim,
|
||||
u8 tim_len, u16 aid, bool s1g)
|
||||
{
|
||||
return s1g ? ieee80211_s1g_check_tim(tim, tim_len, aid) :
|
||||
__ieee80211_check_tim(tim, tim_len, aid);
|
||||
}
|
||||
|
||||
/**
|
||||
* ieee80211_get_tdls_action - get TDLS action code
|
||||
* @skb: the skb containing the frame, length will not be checked
|
||||
@@ -3258,39 +2722,6 @@ static inline bool ieee80211_is_ftm(struct sk_buff *skb)
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* ieee80211_is_s1g_short_beacon - check if frame is an S1G short beacon
|
||||
* @fc: frame control bytes in little-endian byteorder
|
||||
* @variable: pointer to the beacon frame elements
|
||||
* @variable_len: length of the frame elements
|
||||
* Return: whether or not the frame is an S1G short beacon. As per
|
||||
* IEEE80211-2024 11.1.3.10.1, The S1G beacon compatibility element shall
|
||||
* always be present as the first element in beacon frames generated at a
|
||||
* TBTT (Target Beacon Transmission Time), so any frame not containing
|
||||
* this element must have been generated at a TSBTT (Target Short Beacon
|
||||
* Transmission Time) that is not a TBTT. Additionally, short beacons are
|
||||
* prohibited from containing the S1G beacon compatibility element as per
|
||||
* IEEE80211-2024 9.3.4.3 Table 9-76, so if we have an S1G beacon with
|
||||
* either no elements or the first element is not the beacon compatibility
|
||||
* element, we have a short beacon.
|
||||
*/
|
||||
static inline bool ieee80211_is_s1g_short_beacon(__le16 fc, const u8 *variable,
|
||||
size_t variable_len)
|
||||
{
|
||||
if (!ieee80211_is_s1g_beacon(fc))
|
||||
return false;
|
||||
|
||||
/*
|
||||
* If the frame does not contain at least 1 element (this is perfectly
|
||||
* valid in a short beacon) and is an S1G beacon, we have a short
|
||||
* beacon.
|
||||
*/
|
||||
if (variable_len < 2)
|
||||
return true;
|
||||
|
||||
return variable[0] != WLAN_EID_S1G_BCN_COMPAT;
|
||||
}
|
||||
|
||||
struct element {
|
||||
u8 id;
|
||||
u8 datalen;
|
||||
@@ -3446,5 +2877,21 @@ struct ieee80211_tbtt_info_ge_11 {
|
||||
#include "ieee80211-he.h"
|
||||
#include "ieee80211-eht.h"
|
||||
#include "ieee80211-mesh.h"
|
||||
#include "ieee80211-s1g.h"
|
||||
|
||||
/**
|
||||
* ieee80211_check_tim - check if AID bit is set in TIM
|
||||
* @tim: the TIM IE
|
||||
* @tim_len: length of the TIM IE
|
||||
* @aid: the AID to look for
|
||||
* @s1g: whether the TIM is from an S1G PPDU
|
||||
* Return: whether or not traffic is indicated in the TIM for the given AID
|
||||
*/
|
||||
static inline bool ieee80211_check_tim(const struct ieee80211_tim_ie *tim,
|
||||
u8 tim_len, u16 aid, bool s1g)
|
||||
{
|
||||
return s1g ? ieee80211_s1g_check_tim(tim, tim_len, aid) :
|
||||
__ieee80211_check_tim(tim, tim_len, aid);
|
||||
}
|
||||
|
||||
#endif /* LINUX_IEEE80211_H */
|
||||
|
||||
Reference in New Issue
Block a user