cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ioam6.h (2399B)

      1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
      2/*
      3 *  IPv6 IOAM implementation
      4 *
      5 *  Author:
      6 *  Justin Iurman <justin.iurman@uliege.be>
      7 */
      8
      9#ifndef _UAPI_LINUX_IOAM6_H
     10#define _UAPI_LINUX_IOAM6_H
     11
     12#include <asm/byteorder.h>
     13#include <linux/types.h>
     14
     15#define IOAM6_U16_UNAVAILABLE U16_MAX
     16#define IOAM6_U32_UNAVAILABLE U32_MAX
     17#define IOAM6_U64_UNAVAILABLE U64_MAX
     18
     19#define IOAM6_DEFAULT_ID (IOAM6_U32_UNAVAILABLE >> 8)
     20#define IOAM6_DEFAULT_ID_WIDE (IOAM6_U64_UNAVAILABLE >> 8)
     21#define IOAM6_DEFAULT_IF_ID IOAM6_U16_UNAVAILABLE
     22#define IOAM6_DEFAULT_IF_ID_WIDE IOAM6_U32_UNAVAILABLE
     23
     24/*
     25 * IPv6 IOAM Option Header
     26 */
     27struct ioam6_hdr {
     28	__u8 opt_type;
     29	__u8 opt_len;
     30	__u8 :8;				/* reserved */
     31#define IOAM6_TYPE_PREALLOC 0
     32	__u8 type;
     33} __attribute__((packed));
     34
     35/*
     36 * IOAM Trace Header
     37 */
     38struct ioam6_trace_hdr {
     39	__be16	namespace_id;
     40
     41#if defined(__LITTLE_ENDIAN_BITFIELD)
     42
     43	__u8	:1,				/* unused */
     44		:1,				/* unused */
     45		overflow:1,
     46		nodelen:5;
     47
     48	__u8	remlen:7,
     49		:1;				/* unused */
     50
     51	union {
     52		__be32 type_be32;
     53
     54		struct {
     55			__u32	bit7:1,
     56				bit6:1,
     57				bit5:1,
     58				bit4:1,
     59				bit3:1,
     60				bit2:1,
     61				bit1:1,
     62				bit0:1,
     63				bit15:1,	/* unused */
     64				bit14:1,	/* unused */
     65				bit13:1,	/* unused */
     66				bit12:1,	/* unused */
     67				bit11:1,
     68				bit10:1,
     69				bit9:1,
     70				bit8:1,
     71				bit23:1,	/* reserved */
     72				bit22:1,
     73				bit21:1,	/* unused */
     74				bit20:1,	/* unused */
     75				bit19:1,	/* unused */
     76				bit18:1,	/* unused */
     77				bit17:1,	/* unused */
     78				bit16:1,	/* unused */
     79				:8;		/* reserved */
     80		} type;
     81	};
     82
     83#elif defined(__BIG_ENDIAN_BITFIELD)
     84
     85	__u8	nodelen:5,
     86		overflow:1,
     87		:1,				/* unused */
     88		:1;				/* unused */
     89
     90	__u8	:1,				/* unused */
     91		remlen:7;
     92
     93	union {
     94		__be32 type_be32;
     95
     96		struct {
     97			__u32	bit0:1,
     98				bit1:1,
     99				bit2:1,
    100				bit3:1,
    101				bit4:1,
    102				bit5:1,
    103				bit6:1,
    104				bit7:1,
    105				bit8:1,
    106				bit9:1,
    107				bit10:1,
    108				bit11:1,
    109				bit12:1,	/* unused */
    110				bit13:1,	/* unused */
    111				bit14:1,	/* unused */
    112				bit15:1,	/* unused */
    113				bit16:1,	/* unused */
    114				bit17:1,	/* unused */
    115				bit18:1,	/* unused */
    116				bit19:1,	/* unused */
    117				bit20:1,	/* unused */
    118				bit21:1,	/* unused */
    119				bit22:1,
    120				bit23:1,	/* reserved */
    121				:8;		/* reserved */
    122		} type;
    123	};
    124
    125#else
    126#error "Please fix <asm/byteorder.h>"
    127#endif
    128
    129#define IOAM6_TRACE_DATA_SIZE_MAX 244
    130	__u8	data[0];
    131} __attribute__((packed));
    132
    133#endif /* _UAPI_LINUX_IOAM6_H */