LXR linux/tools/testing/selftests/bpf/progs/test

   1// SPDX-License-Identifier: GPL-2.0
   2/* 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 0x1234
   9#define IN32 0x12345678U
  10#define IN64 0x123456789abcdef0ULL
  11
  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