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("tc")
 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 nh_off, i = 0;
15
16	nh_off = 32;
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";

 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("tc")
 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 nh_off, i = 0;
15
16	nh_off = 32;
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";