summarization_freplace.c

 1// SPDX-License-Identifier: GPL-2.0
 2
 3#include <vmlinux.h>
 4#include <bpf/bpf_helpers.h>
 5
 6SEC("?freplace")
 7long changes_pkt_data(struct __sk_buff *sk)
 8{
 9	return bpf_skb_pull_data(sk, 0);
10}
11
12SEC("?freplace")
13long does_not_change_pkt_data(struct __sk_buff *sk)
14{
15	return 0;
16}
17
18SEC("?freplace")
19long might_sleep(struct pt_regs *ctx)
20{
21	int i;
22
23	bpf_copy_from_user(&i, sizeof(i), NULL);
24	return i;
25}
26
27SEC("?freplace")
28long does_not_sleep(struct pt_regs *ctx)
29{
30	return 0;
31}
32
33char _license[] SEC("license") = "GPL";