You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
19 lines
332 B
19 lines
332 B
4 months ago
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
// Copyright (c) 2019 Facebook
|
||
|
|
#include <linux/bpf.h>
|
||
|
|
#include "bpf_helpers.h"
|
||
|
|
|
||
|
|
char _license[] SEC("license") = "GPL";
|
||
|
|
|
||
|
|
SEC("socket")
|
||
|
|
int combinations(volatile struct __sk_buff* skb)
|
||
|
|
{
|
||
|
|
int ret = 0, i;
|
||
|
|
|
||
|
|
#pragma nounroll
|
||
|
|
for (i = 0; i < 20; i++)
|
||
|
|
if (skb->len)
|
||
|
|
ret |= 1 << i;
|
||
|
|
return ret;
|
||
|
|
}
|