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Date:   Tue, 22 Sep 2020 10:21:41 +0100
From:   Lorenz Bauer <>
To:     Martin KaFai Lau <>
Cc:     bpf <>, Alexei Starovoitov <>,
        Daniel Borkmann <>,
        Kernel Team <>,
        Networking <>
Subject: Re: [PATCH v3 bpf-next 06/11] bpf: Change bpf_sk_assign to accept ARG_PTR_TO_BTF_ID_SOCK_COMMON

On Tue, 22 Sep 2020 at 08:04, Martin KaFai Lau <> 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 <>

Acked-by: Lorenz Bauer <>

Lorenz Bauer  |  Systems Engineer
6th Floor, County Hall/The Riverside Building, SE1 7PB, UK

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