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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test_verif_scale1.c (751B)

      1// SPDX-License-Identifier: GPL-2.0
      2// Copyright (c) 2019 Facebook
      3#include <linux/bpf.h>
      4#include <bpf/bpf_helpers.h>
      5#define ATTR __attribute__((noinline))
      6#include "test_jhash.h"
      7
      8SEC("scale90_noinline")
      9int balancer_ingress(struct __sk_buff *ctx)
     10{
     11	void *data_end = (void *)(long)ctx->data_end;
     12	void *data = (void *)(long)ctx->data;
     13	void *ptr;
     14	int ret = 0, nh_off, i = 0;
     15
     16	nh_off = 14;
     17
     18	/* pragma unroll doesn't work on large loops */
     19
     20#define C do { \
     21	ptr = data + i; \
     22	if (ptr + nh_off > data_end) \
     23		break; \
     24	ctx->tc_index = jhash(ptr, nh_off, ctx->cb[0] + i++); \
     25	} while (0);
     26#define C30 C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;
     27	C30;C30;C30; /* 90 calls */
     28	return 0;
     29}
     30char _license[] SEC("license") = "GPL";