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bpf: Document cfi_stubs and owner fields in struct bpf_struct_ops

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Add missing kernel-doc documentation for the cfi_stubs and owner
fields in struct bpf_struct_ops to fix the following warnings:

  Warning: include/linux/bpf.h:1931 struct member 'cfi_stubs' not
  described in 'bpf_struct_ops'
  Warning: include/linux/bpf.h:1931 struct member 'owner' not
  described in 'bpf_struct_ops'

The cfi_stubs field was added in commit 2cd3e3772e ("x86/cfi,bpf:
Fix bpf_struct_ops CFI") to provide CFI stub functions for trampolines,
and the owner field is used for module reference counting.

Signed-off-by: Nirbhay Sharma <nirbhay.lkd@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20251120204620.59571-2-nirbhay.lkd@gmail.com
This commit is contained in:
Nirbhay Sharma
2025-11-21 02:16:21 +05:30
committed by Martin KaFai Lau
parent d088da9042
commit e0940c672a
1 changed files with 6 additions and 4 deletions
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10
include/linux/bpf.h
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@@ -1922,12 +1922,14 @@ struct btf_member;
* reason, if this callback is not defined, the check is skipped as
* the struct_ops map will have final verification performed in
* @reg.
* @type: BTF type.
* @value_type: Value type.
* @cfi_stubs: Pointer to a structure of stub functions for CFI. These stubs
* provide the correct Control Flow Integrity hashes for the
* trampolines generated by BPF struct_ops.
* @owner: The module that owns this struct_ops. Used for module reference
* counting to ensure the module providing the struct_ops cannot be
* unloaded while in use.
* @name: The name of the struct bpf_struct_ops object.
* @func_models: Func models
* @type_id: BTF type id.
* @value_id: BTF value id.
*/
struct bpf_struct_ops {
const struct bpf_verifier_ops *verifier_ops;