Hello:
This patch was applied to bpf/bpf-next.git (master)
by Andrii Nakryiko <andrii@xxxxxxxxxx>:
On Mon, 27 Feb 2023 14:49:43 -0800 you wrote:
> Commit 04d58f1b26a4("libbpf: add API to get XDP/XSK supported features")
> added feature_flags to struct bpf_xdp_query_opts. If a user uses
> bpf_xdp_query_opts with feature_flags member, the bpf_xdp_query()
> will check whether 'netdev' family exists or not in the kernel.
> If it does not exist, the bpf_xdp_query() will return -ENOENT.
>
> But 'netdev' family does not exist in old kernels as it is
> introduced in the same patch set as Commit 04d58f1b26a4.
> So old kernel with newer libbpf won't work properly with
> bpf_xdp_query() api call.
>
> [...]
Here is the summary with links:
- [bpf] libbpf: Fix bpf_xdp_query() in old kernels
https://git.kernel.org/bpf/bpf-next/c/c8ee37bde402
You are awesome, thank you!
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