diff mbox series

[RFC,bpf-next,2/7] bpf: Add enum bpf_capability

Message ID AM6PR03MB508044E85205F344C4DA4B5F991A2@AM6PR03MB5080.eurprd03.prod.outlook.com (mailing list archive)
State RFC
Delegated to: BPF
Headers show
Series bpf: BPF internal fine-grained permission management (BPF internal capabilities) | expand

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Commit Message

Juntong Deng Jan. 16, 2025, 7:41 p.m. UTC 
This patch adds enum bpf_capability, currently only for proof
of concept.

Signed-off-by: Juntong Deng <juntong.deng@outlook.com>
---
 include/uapi/linux/bpf.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

Comments

Song Liu Jan. 16, 2025, 10:56 p.m. UTC | #1 
On Thu, Jan 16, 2025 at 11:43 AM Juntong Deng <juntong.deng@outlook.com> wrote:
>
> This patch adds enum bpf_capability, currently only for proof
> of concept.
>
> Signed-off-by: Juntong Deng <juntong.deng@outlook.com>
> ---
>  include/uapi/linux/bpf.h | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
>
> diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
> index 2acf9b336371..94c21d4eb786 100644
> --- a/include/uapi/linux/bpf.h
> +++ b/include/uapi/linux/bpf.h
> @@ -1058,6 +1058,21 @@ enum bpf_prog_type {
>         __MAX_BPF_PROG_TYPE
>  };
>
> +enum bpf_capability {
> +       BPF_CAP_NONE = 0,
> +       BPF_CAP_TEST_1,
> +       BPF_CAP_TEST_2,
> +       BPF_CAP_TEST_3,
> +       BPF_CAP_SCX_ANY,
> +       BPF_CAP_SCX_KF_UNLOCKED,
> +       BPF_CAP_SCX_KF_CPU_RELEASE,
> +       BPF_CAP_SCX_KF_DISPATCH,
> +       BPF_CAP_SCX_KF_ENQUEUE,
> +       BPF_CAP_SCX_KF_SELECT_CPU,
> +       BPF_CAP_SCX_KF_REST,
> +       __MAX_BPF_CAP
> +};
> +

I don't think we need to handle these in the core verifier.
Instead, we can put the same logic in:

    fetch_kfunc_meta =>
       btf_kfunc_id_set_contains =>
           __btf_kfunc_id_set_contains =>
              hook_filter->filters[i]()

Thanks,
Song

>  enum bpf_attach_type {
>         BPF_CGROUP_INET_INGRESS,
>         BPF_CGROUP_INET_EGRESS,
> --
> 2.39.5
>
diff mbox series

Patch

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 2acf9b336371..94c21d4eb786 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -1058,6 +1058,21 @@  enum bpf_prog_type {
 	__MAX_BPF_PROG_TYPE
 };
 
+enum bpf_capability {
+	BPF_CAP_NONE = 0,
+	BPF_CAP_TEST_1,
+	BPF_CAP_TEST_2,
+	BPF_CAP_TEST_3,
+	BPF_CAP_SCX_ANY,
+	BPF_CAP_SCX_KF_UNLOCKED,
+	BPF_CAP_SCX_KF_CPU_RELEASE,
+	BPF_CAP_SCX_KF_DISPATCH,
+	BPF_CAP_SCX_KF_ENQUEUE,
+	BPF_CAP_SCX_KF_SELECT_CPU,
+	BPF_CAP_SCX_KF_REST,
+	__MAX_BPF_CAP
+};
+
 enum bpf_attach_type {
 	BPF_CGROUP_INET_INGRESS,
 	BPF_CGROUP_INET_EGRESS,