xref: /linux/tools/testing/selftests/bpf/progs/cgroup_skb_direct_packet_access.c (revision 1260ed77798502de9c98020040d2995008de10cc) 
1 // SPDX-License-Identifier: GPL-2.0
2 
3 #include "vmlinux.h"
4 #include <bpf/bpf_helpers.h>
5 
6 __u32 data_end;
7 
8 SEC("cgroup_skb/ingress")
direct_packet_access(struct __sk_buff * skb)9 int direct_packet_access(struct __sk_buff *skb)
10 {
11 	data_end = skb->data_end;
12 	return 1;
13 }
14 
15 char _license[] SEC("license") = "GPL";
16