21 lines
437 B
C
21 lines
437 B
C
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// SPDX-License-Identifier: GPL-2.0
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#include "vmlinux.h"
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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SEC("tc/ingress")
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__description("uninit/mtu: write rejected")
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__success
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__caps_unpriv(CAP_BPF|CAP_NET_ADMIN)
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__failure_unpriv __msg_unpriv("invalid indirect read from stack")
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int tc_uninit_mtu(struct __sk_buff *ctx)
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{
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__u32 mtu;
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bpf_check_mtu(ctx, 0, &mtu, 0, 0);
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return TCX_PASS;
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}
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char LICENSE[] SEC("license") = "GPL";
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