38 lines · c
1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause2#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