1 // SPDX-License-Identifier: GPL-2.0
2
3 #include <linux/bpf.h>
4 #include <bpf/bpf_helpers.h>
5 #include <linux/if_ether.h>
6 #include <linux/ip.h>
7
8 /* Dummy prog to test TC-BPF API */
9
10 SEC("tc")
11 int cls(struct __sk_buff *skb)
12 {
13 return 0;
14 }
15
16 /* Prog to verify tc-bpf without cap_sys_admin and cap_perfmon */
17 SEC("tcx/ingress")
18 int pkt_ptr(struct __sk_buff *skb)
19 {
20 struct iphdr *iph = (void *)(long)skb->data + sizeof(struct ethhdr);
21
22 if ((long)(iph + 1) > (long)skb->data_end)
23 return 1;
24 return 0;
25 }
26
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