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From: Jiri Pirko <jiri@resnulli.us>
To: bpf@vger.kernel.org
Subject: kfunc use newbie question
Date: Mon, 30 Oct 2023 10:35:59 +0100	[thread overview]
Message-ID: <ZT94/1VlpfA231TX@nanopsycho> (raw)

Hi BPF :)

I'm trying to use bpf_dynptr_from_skb() kfunc in my program. I compiled
it with having following declaration in the bpf .c file:
extern int bpf_dynptr_from_skb(struct __sk_buff *skb, __u64 flags,
                               struct bpf_dynptr *ptr__uninit) __ksym;

I have all "BPF/BTF" kernel config options on. During load,
I'm still getting:

libbpf: failed to find BTF for extern 'bpf_dynptr_from_skb': -3

I'm pretty much clueless about what may be wrong. Documentation didn't
help me either :/

Any idea what I may be doing wrong?

Thanks

Jiri

             reply	other threads:[~2023-10-30  9:36 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-10-30  9:35 Jiri Pirko [this message]
2023-10-30 10:14 ` kfunc use newbie question Jiri Olsa
2023-10-30 11:02   ` Jiri Pirko
2023-10-30 13:19     ` Jiri Olsa
2023-10-30 13:45       ` Jiri Pirko

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