M1: compat layer + pf.ko skeleton builds against Linux 7.3.4
- pfk.h: BSD types/ioctl encoding (OpenBSD bit layout), locks (NET_LOCK=rwsem), pools, timeouts, mbuf shim over sk_buff, ifnet registry, toeplitz/siphash - pfk_mod/pfk_hooks: misc /dev/pf (0600), IPv4 netfilter hook skeleton, DIOCGETSTATUS answered (M1 skeleton; engine ioctls land with pf_ioctl.c) - vendorize/stage-port scripts: deterministic upstream staging with seds (struct renames, IFF_*->PFIFF_*, sa_len drops) logged to docs/porting-notes - fixes: modules_prepare+Module.symvers for out-of-tree builds
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/* $OpenBSD: _endian.h,v 1.8 2018/01/11 23:13:37 dlg Exp $ */
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/*-
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* Copyright (c) 1997 Niklas Hallqvist. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Internal endianness macros. This pulls in <machine/endian.h> to
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* get the correct setting direction for the platform and sets internal
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* ('__' prefix) macros appropriately.
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*/
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#ifndef _SYS__ENDIAN_H_
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#define _SYS__ENDIAN_H_
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#include <sys/_types.h>
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#define __FROM_SYS__ENDIAN
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#include <machine/endian.h>
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#undef __FROM_SYS__ENDIAN
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#define _LITTLE_ENDIAN 1234
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#define _BIG_ENDIAN 4321
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#define _PDP_ENDIAN 3412
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/* Note that these macros evaluate their arguments several times. */
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#define __swap16gen(x) \
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(__uint16_t)(((__uint16_t)(x) & 0xffU) << 8 | ((__uint16_t)(x) & 0xff00U) >> 8)
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#define __swap32gen(x) \
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(__uint32_t)(((__uint32_t)(x) & 0xff) << 24 | \
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((__uint32_t)(x) & 0xff00) << 8 | ((__uint32_t)(x) & 0xff0000) >> 8 |\
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((__uint32_t)(x) & 0xff000000) >> 24)
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#define __swap64gen(x) \
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(__uint64_t)((((__uint64_t)(x) & 0xff) << 56) | \
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((__uint64_t)(x) & 0xff00ULL) << 40 | \
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((__uint64_t)(x) & 0xff0000ULL) << 24 | \
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((__uint64_t)(x) & 0xff000000ULL) << 8 | \
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((__uint64_t)(x) & 0xff00000000ULL) >> 8 | \
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((__uint64_t)(x) & 0xff0000000000ULL) >> 24 | \
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((__uint64_t)(x) & 0xff000000000000ULL) >> 40 | \
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((__uint64_t)(x) & 0xff00000000000000ULL) >> 56)
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#ifndef __HAVE_MD_SWAP
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static __inline __uint16_t
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__swap16md(__uint16_t x)
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{
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return (__swap16gen(x));
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}
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static __inline __uint32_t
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__swap32md(__uint32_t x)
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{
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return (__swap32gen(x));
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}
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static __inline __uint64_t
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__swap64md(__uint64_t x)
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{
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return (__swap64gen(x));
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}
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#endif
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#define __swap16(x) \
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(__uint16_t)(__builtin_constant_p(x) ? __swap16gen(x) : __swap16md(x))
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#define __swap32(x) \
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(__uint32_t)(__builtin_constant_p(x) ? __swap32gen(x) : __swap32md(x))
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#define __swap64(x) \
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(__uint64_t)(__builtin_constant_p(x) ? __swap64gen(x) : __swap64md(x))
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#if _BYTE_ORDER == _LITTLE_ENDIAN
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#define _QUAD_HIGHWORD 1
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#define _QUAD_LOWWORD 0
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#define __htobe16 __swap16
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#define __htobe32 __swap32
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#define __htobe64 __swap64
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#define __htole16(x) ((__uint16_t)(x))
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#define __htole32(x) ((__uint32_t)(x))
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#define __htole64(x) ((__uint64_t)(x))
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#ifdef _KERNEL
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#ifdef __HAVE_MD_SWAPIO
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#define __bemtoh16(_x) __mswap16(_x)
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#define __bemtoh32(_x) __mswap32(_x)
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#define __bemtoh64(_x) __mswap64(_x)
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#define __htobem16(_x, _v) __swapm16((_x), (_v))
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#define __htobem32(_x, _v) __swapm32((_x), (_v))
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#define __htobem64(_x, _v) __swapm64((_x), (_v))
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#endif /* __HAVE_MD_SWAPIO */
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#endif /* _KERNEL */
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#endif /* _BYTE_ORDER == _LITTLE_ENDIAN */
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#if _BYTE_ORDER == _BIG_ENDIAN
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#define _QUAD_HIGHWORD 0
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#define _QUAD_LOWWORD 1
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#define __htobe16(x) ((__uint16_t)(x))
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#define __htobe32(x) ((__uint32_t)(x))
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#define __htobe64(x) ((__uint64_t)(x))
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#define __htole16 __swap16
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#define __htole32 __swap32
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#define __htole64 __swap64
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#ifdef _KERNEL
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#ifdef __HAVE_MD_SWAPIO
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#define __lemtoh16(_x) __mswap16(_x)
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#define __lemtoh32(_x) __mswap32(_x)
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#define __lemtoh64(_x) __mswap64(_x)
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#define __htolem16(_x, _v) __swapm16((_x), (_v))
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#define __htolem32(_x, _v) __swapm32((_x), (_v))
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#define __htolem64(_x, _v) __swapm64((_x), (_v))
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#endif /* __HAVE_MD_SWAPIO */
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#endif /* _KERNEL */
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#endif /* _BYTE_ORDER == _BIG_ENDIAN */
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#ifdef _KERNEL
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/*
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* Fill in the __hto[bl]em{16,32,64} and __[bl]emtoh{16,32,64} macros
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* that haven't been defined yet
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*/
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#ifndef __bemtoh16
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#define __bemtoh16(_x) __htobe16(*(__uint16_t *)(_x))
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#define __bemtoh32(_x) __htobe32(*(__uint32_t *)(_x))
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#define __bemtoh64(_x) __htobe64(*(__uint64_t *)(_x))
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#endif
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#ifndef __htobem16
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#define __htobem16(_x, _v) (*(__uint16_t *)(_x) = __htobe16(_v))
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#define __htobem32(_x, _v) (*(__uint32_t *)(_x) = __htobe32(_v))
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#define __htobem64(_x, _v) (*(__uint64_t *)(_x) = __htobe64(_v))
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#endif
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#ifndef __lemtoh16
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#define __lemtoh16(_x) __htole16(*(__uint16_t *)(_x))
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#define __lemtoh32(_x) __htole32(*(__uint32_t *)(_x))
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#define __lemtoh64(_x) __htole64(*(__uint64_t *)(_x))
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#endif
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#ifndef __htolem16
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#define __htolem16(_x, _v) (*(__uint16_t *)(_x) = __htole16(_v))
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#define __htolem32(_x, _v) (*(__uint32_t *)(_x) = __htole32(_v))
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#define __htolem64(_x, _v) (*(__uint64_t *)(_x) = __htole64(_v))
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#endif
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#endif /* _KERNEL */
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#endif /* _SYS__ENDIAN_H_ */
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