25 lines
1016 B
C
25 lines
1016 B
C
/* Copyright Authors of Cilium */
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#ifndef __LIB_ENDIAN_H_
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#define __LIB_ENDIAN_H_
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#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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#define __bpf_ntohs(x) __builtin_bswap16(x)
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#define __bpf_htons(x) __builtin_bswap16(x)
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#define __bpf_ntohl(x) __builtin_bswap32(x)
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#define __bpf_htonl(x) __builtin_bswap32(x)
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#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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#define __bpf_ntohs(x) (x)
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#define __bpf_htons(x) (x)
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#define __bpf_ntohl(x) (x)
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#define __bpf_htonl(x) (x)
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#else
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#error "Endianness detection needs to be set up for your compiler?!"
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#endif
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#define bpf_htons(x) (__builtin_constant_p(x) ? __constant_htons(x) : __bpf_htons(x))
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#define bpf_ntohs(x) (__builtin_constant_p(x) ? __constant_ntohs(x) : __bpf_ntohs(x))
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#define bpf_htonl(x) (__builtin_constant_p(x) ? __constant_htonl(x) : __bpf_htonl(x))
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#define bpf_ntohl(x) (__builtin_constant_p(x) ? __constant_ntohl(x) : __bpf_ntohl(x))
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#endif |