1121054Semax// SPDX-License-Identifier: GPL-2.0
2121054Semax// Copyright (c) 2019 Facebook
3121054Semax#include "vmlinux.h"
4121054Semax#include <bpf/bpf_helpers.h>
5121054Semax#define ATTR __always_inline
6121054Semax#include "test_jhash.h"
7121054Semax
8121054SemaxSEC("tc")
9121054Semaxint balancer_ingress(struct __sk_buff *ctx)
10121054Semax{
11121054Semax	void *data_end = (void *)(long)ctx->data_end;
12121054Semax	void *data = (void *)(long)ctx->data;
13121054Semax	void *ptr;
14121054Semax	int nh_off, i = 0;
15121054Semax
16121054Semax	nh_off = 14;
17121054Semax
18121054Semax	/* pragma unroll doesn't work on large loops */
19121054Semax
20121054Semax#define C do { \
21121054Semax	ptr = data + i; \
22121054Semax	if (ptr + nh_off > data_end) \
23121054Semax		break; \
24121054Semax	ctx->tc_index = jhash(ptr, nh_off, ctx->cb[0] + i++); \
25121054Semax	} while (0);
26121054Semax#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;
27121054Semax	C30;C30;C30; /* 90 calls */
28121054Semax	return 0;
29121054Semax}
30121054Semaxchar _license[] SEC("license") = "GPL";
31121054Semax