tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2#include <linux/bpf.h>
3#include <bpf/bpf_helpers.h>
4#include <bpf/bpf_endian.h>
5
6char _license[] SEC("license") = "GPL";
7
8int ifindex;
9int ret;
10
11SEC("lwt_xmit")
12int redirect_ingress(struct __sk_buff *skb)
13{
14 ret = bpf_clone_redirect(skb, ifindex, BPF_F_INGRESS);
15 return 0;
16}
17
18SEC("lwt_xmit")
19int redirect_egress(struct __sk_buff *skb)
20{
21 ret = bpf_clone_redirect(skb, ifindex, 0);
22 return 0;
23}
24
25SEC("tc")
26int tc_redirect_ingress(struct __sk_buff *skb)
27{
28 ret = bpf_clone_redirect(skb, ifindex, BPF_F_INGRESS);
29 return 0;
30}
31
32SEC("tc")
33int tc_redirect_egress(struct __sk_buff *skb)
34{
35 ret = bpf_clone_redirect(skb, ifindex, 0);
36 return 0;
37}
38
39SEC("tc")
40int tc_adjust_room(struct __sk_buff *skb)
41{
42 ret = bpf_skb_adjust_room(skb, 4, BPF_ADJ_ROOM_NET, 0);
43 return 0;
44}