On Tue, 22 Sep 2020 at 08:04, Martin KaFai Lau [off-list ref] wrote:

This patch changes the bpf_sk_assign() to take
ARG_PTR_TO_BTF_ID_SOCK_COMMON such that they will work with the pointer
returned by the bpf_skc_to_*() helpers also.

The bpf_sk_lookup_assign() is taking ARG_PTR_TO_SOCKET_"OR_NULL".  Meaning
it specifically takes a scalar NULL.  ARG_PTR_TO_BTF_ID_SOCK_COMMON
does not allow a scalar NULL, so another ARG type is required
for this purpose and another folllow-up patch can be used if
there is such need.

Signed-off-by: Martin KaFai Lau <redacted>

Acked-by: Lorenz Bauer <redacted>

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Lorenz Bauer  |  Systems Engineer
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