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Feng YangandMartin KaFai Lau
e8ae16d65a
Calling bpf_lwt_xmit_push_encap will not cause a crash when dst is missing. Signed-off-by: Feng Yang <yangfeng@kylinos.cn> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Link: https://patch.msgid.link/20260304094429.168521-3-yangfeng59949@163.com
23 lines
424 B
C
23 lines
424 B
C
// 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("lwt_xmit")
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__success __retval(0)
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int test_missing_dst(struct __sk_buff *skb)
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{
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struct iphdr iph;
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__builtin_memset(&iph, 0, sizeof(struct iphdr));
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iph.ihl = 5;
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iph.version = 4;
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bpf_lwt_push_encap(skb, BPF_LWT_ENCAP_IP, &iph, sizeof(struct iphdr));
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return 0;
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}
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char _license[] SEC("license") = "GPL";
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