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| author | Kui-Feng Lee <kuifeng@fb.com> | 2022-05-10 13:59:21 -0700 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2022-05-10 21:58:31 -0700 |
| commit | 2fcc82411e74e5e6aba336561cf56fb899bfae4e (patch) | |
| tree | b56024a482d12e1bb739e561d7d60acf9e7f731e /include/linux/bpf.h | |
| parent | e384c7b7b46d0a5f4bf3c554f963e6e9622d0ab1 (diff) | |
| download | lwn-2fcc82411e74e5e6aba336561cf56fb899bfae4e.tar.gz lwn-2fcc82411e74e5e6aba336561cf56fb899bfae4e.zip | |
bpf, x86: Attach a cookie to fentry/fexit/fmod_ret/lsm.
Pass a cookie along with BPF_LINK_CREATE requests.
Add a bpf_cookie field to struct bpf_tracing_link to attach a cookie.
The cookie of a bpf_tracing_link is available by calling
bpf_get_attach_cookie when running the BPF program of the attached
link.
The value of a cookie will be set at bpf_tramp_run_ctx by the
trampoline of the link.
Signed-off-by: Kui-Feng Lee <kuifeng@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220510205923.3206889-4-kuifeng@fb.com
Diffstat (limited to 'include/linux/bpf.h')
| -rw-r--r-- | include/linux/bpf.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 256fb802e580..aba7ded56436 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -1102,6 +1102,7 @@ struct bpf_link_ops { struct bpf_tramp_link { struct bpf_link link; struct hlist_node tramp_hlist; + u64 cookie; }; struct bpf_tracing_link { |