38 lines · c
1// SPDX-License-Identifier: GPL-2.02/* Copyright (c) 2020 Facebook */3 4#include "vmlinux.h"5#include <bpf/bpf_helpers.h>6#include <bpf/bpf_endian.h>7 8#define IN16 0x12349#define IN32 0x12345678U10#define IN64 0x123456789abcdef0ULL11 12__u16 in16 = 0;13__u32 in32 = 0;14__u64 in64 = 0;15 16__u16 out16 = 0;17__u32 out32 = 0;18__u64 out64 = 0;19 20__u16 const16 = 0;21__u32 const32 = 0;22__u64 const64 = 0;23 24SEC("raw_tp/sys_enter")25int sys_enter(const void *ctx)26{27 out16 = __builtin_bswap16(in16);28 out32 = __builtin_bswap32(in32);29 out64 = __builtin_bswap64(in64);30 const16 = ___bpf_swab16(IN16);31 const32 = ___bpf_swab32(IN32);32 const64 = ___bpf_swab64(IN64);33 34 return 0;35}36 37char _license[] SEC("license") = "GPL";38