1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
2 2
3 #include "vmlinux.h" 3 #include "vmlinux.h"
4 #include <bpf/bpf_helpers.h> 4 #include <bpf/bpf_helpers.h>
5 #include "bpf_misc.h" 5 #include "bpf_misc.h"
6 6
7 SEC("tc/ingress") 7 SEC("tc/ingress")
8 __description("uninit/mtu: write rejected") 8 __description("uninit/mtu: write rejected")
9 __failure __msg("invalid indirect read from st 9 __failure __msg("invalid indirect read from stack")
10 int tc_uninit_mtu(struct __sk_buff *ctx) 10 int tc_uninit_mtu(struct __sk_buff *ctx)
11 { 11 {
12 __u32 mtu; 12 __u32 mtu;
13 13
14 bpf_check_mtu(ctx, 0, &mtu, 0, 0); 14 bpf_check_mtu(ctx, 0, &mtu, 0, 0);
15 return TCX_PASS; 15 return TCX_PASS;
16 } 16 }
17 17
18 char LICENSE[] SEC("license") = "GPL"; 18 char LICENSE[] SEC("license") = "GPL";
19 19
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