Revision c403f6a3a792a6601185497c12b0bdf4be880439 authored by Qian Cai on 15 August 2020, 00:31:53 UTC, committed by Linus Torvalds on 15 August 2020, 02:56:57 UTC
BUG: KCSAN: data-race in page_cpupid_xchg_last / put_page write (marked) to 0xfffffc0d48ec1a00 of 8 bytes by task 91442 on cpu 3: page_cpupid_xchg_last+0x51/0x80 page_cpupid_xchg_last at mm/mmzone.c:109 (discriminator 11) wp_page_reuse+0x3e/0xc0 wp_page_reuse at mm/memory.c:2453 do_wp_page+0x472/0x7b0 do_wp_page at mm/memory.c:2798 __handle_mm_fault+0xcb0/0xd00 handle_pte_fault at mm/memory.c:4049 (inlined by) __handle_mm_fault at mm/memory.c:4163 handle_mm_fault+0xfc/0x2f0 handle_mm_fault at mm/memory.c:4200 do_page_fault+0x263/0x6f9 do_user_addr_fault at arch/x86/mm/fault.c:1465 (inlined by) do_page_fault at arch/x86/mm/fault.c:1539 page_fault+0x34/0x40 read to 0xfffffc0d48ec1a00 of 8 bytes by task 94817 on cpu 69: put_page+0x15a/0x1f0 page_zonenum at include/linux/mm.h:923 (inlined by) is_zone_device_page at include/linux/mm.h:929 (inlined by) page_is_devmap_managed at include/linux/mm.h:948 (inlined by) put_page at include/linux/mm.h:1023 wp_page_copy+0x571/0x930 wp_page_copy at mm/memory.c:2615 do_wp_page+0x107/0x7b0 __handle_mm_fault+0xcb0/0xd00 handle_mm_fault+0xfc/0x2f0 do_page_fault+0x263/0x6f9 page_fault+0x34/0x40 Reported by Kernel Concurrency Sanitizer on: CPU: 69 PID: 94817 Comm: systemd-udevd Tainted: G W O L 5.5.0-next-20200204+ #6 Hardware name: HPE ProLiant DL385 Gen10/ProLiant DL385 Gen10, BIOS A40 07/10/2019 A page never changes its zone number. The zone number happens to be stored in the same word as other bits which are modified, but the zone number bits will never be modified by any other write, so it can accept a reload of the zone bits after an intervening write and it don't need to use READ_ONCE(). Thus, annotate this data race using ASSERT_EXCLUSIVE_BITS() to also assert that there are no concurrent writes to it. Suggested-by: Marco Elver <elver@google.com> Signed-off-by: Qian Cai <cai@lca.pw> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Jan Kara <jack@suse.cz> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Ira Weiny <ira.weiny@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Link: http://lkml.kernel.org/r/1581619089-14472-1-git-send-email-cai@lca.pw Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 7e0cc01
ieee80211_radiotap.h
/*
* Copyright (c) 2017 Intel Deutschland GmbH
* Copyright (c) 2018-2019 Intel Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __RADIOTAP_H
#define __RADIOTAP_H
#include <linux/kernel.h>
#include <asm/unaligned.h>
/**
* struct ieee82011_radiotap_header - base radiotap header
*/
struct ieee80211_radiotap_header {
/**
* @it_version: radiotap version, always 0
*/
uint8_t it_version;
/**
* @it_pad: padding (or alignment)
*/
uint8_t it_pad;
/**
* @it_len: overall radiotap header length
*/
__le16 it_len;
/**
* @it_present: (first) present word
*/
__le32 it_present;
} __packed;
/* version is always 0 */
#define PKTHDR_RADIOTAP_VERSION 0
/* see the radiotap website for the descriptions */
enum ieee80211_radiotap_presence {
IEEE80211_RADIOTAP_TSFT = 0,
IEEE80211_RADIOTAP_FLAGS = 1,
IEEE80211_RADIOTAP_RATE = 2,
IEEE80211_RADIOTAP_CHANNEL = 3,
IEEE80211_RADIOTAP_FHSS = 4,
IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5,
IEEE80211_RADIOTAP_DBM_ANTNOISE = 6,
IEEE80211_RADIOTAP_LOCK_QUALITY = 7,
IEEE80211_RADIOTAP_TX_ATTENUATION = 8,
IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9,
IEEE80211_RADIOTAP_DBM_TX_POWER = 10,
IEEE80211_RADIOTAP_ANTENNA = 11,
IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12,
IEEE80211_RADIOTAP_DB_ANTNOISE = 13,
IEEE80211_RADIOTAP_RX_FLAGS = 14,
IEEE80211_RADIOTAP_TX_FLAGS = 15,
IEEE80211_RADIOTAP_RTS_RETRIES = 16,
IEEE80211_RADIOTAP_DATA_RETRIES = 17,
/* 18 is XChannel, but it's not defined yet */
IEEE80211_RADIOTAP_MCS = 19,
IEEE80211_RADIOTAP_AMPDU_STATUS = 20,
IEEE80211_RADIOTAP_VHT = 21,
IEEE80211_RADIOTAP_TIMESTAMP = 22,
IEEE80211_RADIOTAP_HE = 23,
IEEE80211_RADIOTAP_HE_MU = 24,
IEEE80211_RADIOTAP_ZERO_LEN_PSDU = 26,
IEEE80211_RADIOTAP_LSIG = 27,
/* valid in every it_present bitmap, even vendor namespaces */
IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29,
IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30,
IEEE80211_RADIOTAP_EXT = 31
};
/* for IEEE80211_RADIOTAP_FLAGS */
enum ieee80211_radiotap_flags {
IEEE80211_RADIOTAP_F_CFP = 0x01,
IEEE80211_RADIOTAP_F_SHORTPRE = 0x02,
IEEE80211_RADIOTAP_F_WEP = 0x04,
IEEE80211_RADIOTAP_F_FRAG = 0x08,
IEEE80211_RADIOTAP_F_FCS = 0x10,
IEEE80211_RADIOTAP_F_DATAPAD = 0x20,
IEEE80211_RADIOTAP_F_BADFCS = 0x40,
};
/* for IEEE80211_RADIOTAP_CHANNEL */
enum ieee80211_radiotap_channel_flags {
IEEE80211_CHAN_CCK = 0x0020,
IEEE80211_CHAN_OFDM = 0x0040,
IEEE80211_CHAN_2GHZ = 0x0080,
IEEE80211_CHAN_5GHZ = 0x0100,
IEEE80211_CHAN_DYN = 0x0400,
IEEE80211_CHAN_HALF = 0x4000,
IEEE80211_CHAN_QUARTER = 0x8000,
};
/* for IEEE80211_RADIOTAP_RX_FLAGS */
enum ieee80211_radiotap_rx_flags {
IEEE80211_RADIOTAP_F_RX_BADPLCP = 0x0002,
};
/* for IEEE80211_RADIOTAP_TX_FLAGS */
enum ieee80211_radiotap_tx_flags {
IEEE80211_RADIOTAP_F_TX_FAIL = 0x0001,
IEEE80211_RADIOTAP_F_TX_CTS = 0x0002,
IEEE80211_RADIOTAP_F_TX_RTS = 0x0004,
IEEE80211_RADIOTAP_F_TX_NOACK = 0x0008,
IEEE80211_RADIOTAP_F_TX_NOSEQNO = 0x0010,
};
/* for IEEE80211_RADIOTAP_MCS "have" flags */
enum ieee80211_radiotap_mcs_have {
IEEE80211_RADIOTAP_MCS_HAVE_BW = 0x01,
IEEE80211_RADIOTAP_MCS_HAVE_MCS = 0x02,
IEEE80211_RADIOTAP_MCS_HAVE_GI = 0x04,
IEEE80211_RADIOTAP_MCS_HAVE_FMT = 0x08,
IEEE80211_RADIOTAP_MCS_HAVE_FEC = 0x10,
IEEE80211_RADIOTAP_MCS_HAVE_STBC = 0x20,
};
enum ieee80211_radiotap_mcs_flags {
IEEE80211_RADIOTAP_MCS_BW_MASK = 0x03,
IEEE80211_RADIOTAP_MCS_BW_20 = 0,
IEEE80211_RADIOTAP_MCS_BW_40 = 1,
IEEE80211_RADIOTAP_MCS_BW_20L = 2,
IEEE80211_RADIOTAP_MCS_BW_20U = 3,
IEEE80211_RADIOTAP_MCS_SGI = 0x04,
IEEE80211_RADIOTAP_MCS_FMT_GF = 0x08,
IEEE80211_RADIOTAP_MCS_FEC_LDPC = 0x10,
IEEE80211_RADIOTAP_MCS_STBC_MASK = 0x60,
IEEE80211_RADIOTAP_MCS_STBC_1 = 1,
IEEE80211_RADIOTAP_MCS_STBC_2 = 2,
IEEE80211_RADIOTAP_MCS_STBC_3 = 3,
IEEE80211_RADIOTAP_MCS_STBC_SHIFT = 5,
};
/* for IEEE80211_RADIOTAP_AMPDU_STATUS */
enum ieee80211_radiotap_ampdu_flags {
IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN = 0x0001,
IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN = 0x0002,
IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN = 0x0004,
IEEE80211_RADIOTAP_AMPDU_IS_LAST = 0x0008,
IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR = 0x0010,
IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN = 0x0020,
IEEE80211_RADIOTAP_AMPDU_EOF = 0x0040,
IEEE80211_RADIOTAP_AMPDU_EOF_KNOWN = 0x0080,
};
/* for IEEE80211_RADIOTAP_VHT */
enum ieee80211_radiotap_vht_known {
IEEE80211_RADIOTAP_VHT_KNOWN_STBC = 0x0001,
IEEE80211_RADIOTAP_VHT_KNOWN_TXOP_PS_NA = 0x0002,
IEEE80211_RADIOTAP_VHT_KNOWN_GI = 0x0004,
IEEE80211_RADIOTAP_VHT_KNOWN_SGI_NSYM_DIS = 0x0008,
IEEE80211_RADIOTAP_VHT_KNOWN_LDPC_EXTRA_OFDM_SYM = 0x0010,
IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED = 0x0020,
IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH = 0x0040,
IEEE80211_RADIOTAP_VHT_KNOWN_GROUP_ID = 0x0080,
IEEE80211_RADIOTAP_VHT_KNOWN_PARTIAL_AID = 0x0100,
};
enum ieee80211_radiotap_vht_flags {
IEEE80211_RADIOTAP_VHT_FLAG_STBC = 0x01,
IEEE80211_RADIOTAP_VHT_FLAG_TXOP_PS_NA = 0x02,
IEEE80211_RADIOTAP_VHT_FLAG_SGI = 0x04,
IEEE80211_RADIOTAP_VHT_FLAG_SGI_NSYM_M10_9 = 0x08,
IEEE80211_RADIOTAP_VHT_FLAG_LDPC_EXTRA_OFDM_SYM = 0x10,
IEEE80211_RADIOTAP_VHT_FLAG_BEAMFORMED = 0x20,
};
enum ieee80211_radiotap_vht_coding {
IEEE80211_RADIOTAP_CODING_LDPC_USER0 = 0x01,
IEEE80211_RADIOTAP_CODING_LDPC_USER1 = 0x02,
IEEE80211_RADIOTAP_CODING_LDPC_USER2 = 0x04,
IEEE80211_RADIOTAP_CODING_LDPC_USER3 = 0x08,
};
/* for IEEE80211_RADIOTAP_TIMESTAMP */
enum ieee80211_radiotap_timestamp_unit_spos {
IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MASK = 0x000F,
IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MS = 0x0000,
IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US = 0x0001,
IEEE80211_RADIOTAP_TIMESTAMP_UNIT_NS = 0x0003,
IEEE80211_RADIOTAP_TIMESTAMP_SPOS_MASK = 0x00F0,
IEEE80211_RADIOTAP_TIMESTAMP_SPOS_BEGIN_MDPU = 0x0000,
IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ = 0x0010,
IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_PPDU = 0x0020,
IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_MPDU = 0x0030,
IEEE80211_RADIOTAP_TIMESTAMP_SPOS_UNKNOWN = 0x00F0,
};
enum ieee80211_radiotap_timestamp_flags {
IEEE80211_RADIOTAP_TIMESTAMP_FLAG_64BIT = 0x00,
IEEE80211_RADIOTAP_TIMESTAMP_FLAG_32BIT = 0x01,
IEEE80211_RADIOTAP_TIMESTAMP_FLAG_ACCURACY = 0x02,
};
struct ieee80211_radiotap_he {
__le16 data1, data2, data3, data4, data5, data6;
};
enum ieee80211_radiotap_he_bits {
IEEE80211_RADIOTAP_HE_DATA1_FORMAT_MASK = 3,
IEEE80211_RADIOTAP_HE_DATA1_FORMAT_SU = 0,
IEEE80211_RADIOTAP_HE_DATA1_FORMAT_EXT_SU = 1,
IEEE80211_RADIOTAP_HE_DATA1_FORMAT_MU = 2,
IEEE80211_RADIOTAP_HE_DATA1_FORMAT_TRIG = 3,
IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN = 0x0004,
IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN = 0x0008,
IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN = 0x0010,
IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN = 0x0020,
IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN = 0x0040,
IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN = 0x0080,
IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN = 0x0100,
IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN = 0x0200,
IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN = 0x0400,
IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN = 0x0800,
IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN = 0x1000,
IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN = 0x2000,
IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN = 0x4000,
IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN = 0x8000,
IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN = 0x0001,
IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN = 0x0002,
IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN = 0x0004,
IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN = 0x0008,
IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN = 0x0010,
IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN = 0x0020,
IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN = 0x0040,
IEEE80211_RADIOTAP_HE_DATA2_MIDAMBLE_KNOWN = 0x0080,
IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET = 0x3f00,
IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN = 0x4000,
IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC = 0x8000,
IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR = 0x003f,
IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE = 0x0040,
IEEE80211_RADIOTAP_HE_DATA3_UL_DL = 0x0080,
IEEE80211_RADIOTAP_HE_DATA3_DATA_MCS = 0x0f00,
IEEE80211_RADIOTAP_HE_DATA3_DATA_DCM = 0x1000,
IEEE80211_RADIOTAP_HE_DATA3_CODING = 0x2000,
IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG = 0x4000,
IEEE80211_RADIOTAP_HE_DATA3_STBC = 0x8000,
IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE = 0x000f,
IEEE80211_RADIOTAP_HE_DATA4_MU_STA_ID = 0x7ff0,
IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1 = 0x000f,
IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2 = 0x00f0,
IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3 = 0x0f00,
IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4 = 0xf000,
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC = 0x000f,
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_20MHZ = 0,
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_40MHZ = 1,
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_80MHZ = 2,
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_160MHZ = 3,
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_26T = 4,
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_52T = 5,
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_106T = 6,
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_242T = 7,
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_484T = 8,
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_996T = 9,
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_2x996T = 10,
IEEE80211_RADIOTAP_HE_DATA5_GI = 0x0030,
IEEE80211_RADIOTAP_HE_DATA5_GI_0_8 = 0,
IEEE80211_RADIOTAP_HE_DATA5_GI_1_6 = 1,
IEEE80211_RADIOTAP_HE_DATA5_GI_3_2 = 2,
IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE = 0x00c0,
IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN = 0,
IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X = 1,
IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X = 2,
IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X = 3,
IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS = 0x0700,
IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD = 0x3000,
IEEE80211_RADIOTAP_HE_DATA5_TXBF = 0x4000,
IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG = 0x8000,
IEEE80211_RADIOTAP_HE_DATA6_NSTS = 0x000f,
IEEE80211_RADIOTAP_HE_DATA6_DOPPLER = 0x0010,
IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN = 0x0020,
IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW = 0x00c0,
IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_20MHZ = 0,
IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_40MHZ = 1,
IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_80MHZ = 2,
IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_160MHZ = 3,
IEEE80211_RADIOTAP_HE_DATA6_TXOP = 0x7f00,
IEEE80211_RADIOTAP_HE_DATA6_MIDAMBLE_PDCTY = 0x8000,
};
struct ieee80211_radiotap_he_mu {
__le16 flags1, flags2;
u8 ru_ch1[4];
u8 ru_ch2[4];
};
enum ieee80211_radiotap_he_mu_bits {
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS = 0x000f,
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN = 0x0010,
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM = 0x0020,
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN = 0x0040,
IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN = 0x0080,
IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN = 0x0100,
IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN = 0x0200,
IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN = 0x1000,
IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU = 0x2000,
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN = 0x4000,
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN = 0x8000,
IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW = 0x0003,
IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_20MHZ = 0x0000,
IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_40MHZ = 0x0001,
IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_80MHZ = 0x0002,
IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_160MHZ = 0x0003,
IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN = 0x0004,
IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP = 0x0008,
IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS = 0x00f0,
IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW = 0x0300,
IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN= 0x0400,
IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU = 0x0800,
};
enum ieee80211_radiotap_lsig_data1 {
IEEE80211_RADIOTAP_LSIG_DATA1_RATE_KNOWN = 0x0001,
IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN = 0x0002,
};
enum ieee80211_radiotap_lsig_data2 {
IEEE80211_RADIOTAP_LSIG_DATA2_RATE = 0x000f,
IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH = 0xfff0,
};
struct ieee80211_radiotap_lsig {
__le16 data1, data2;
};
enum ieee80211_radiotap_zero_len_psdu_type {
IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING = 0,
IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED = 1,
IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR = 0xff,
};
/**
* ieee80211_get_radiotap_len - get radiotap header length
*/
static inline u16 ieee80211_get_radiotap_len(const char *data)
{
struct ieee80211_radiotap_header *hdr = (void *)data;
return get_unaligned_le16(&hdr->it_len);
}
#endif /* __RADIOTAP_H */
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