1 // SPDX-License-Identifier: GPL-2.0
2
3 #include "vmlinux.h"
4 #include <bpf/bpf_helpers.h>
5 #include "bpf_misc.h"
6
7 SEC("tc/ingress")
8 __description("uninit/mtu: write rejected")
9 __failure __msg("invalid indirect read from stack")
10 int tc_uninit_mtu(struct __sk_buff *ctx)
11 {
12 __u32 mtu;
13
14 bpf_check_mtu(ctx, 0, &mtu, 0, 0);
15 return TCX_PASS;
16 }
17
18 char LICENSE[] SEC("license") = "GPL";
19
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.