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selftests/hid: ensure CKI can compile our new tests on old kernels

Message ID 20240627-fix-cki-v1-1-2b47ceac116a@kernel.org
State Accepted
Commit fcdf830ea634cf0ee6543b6cd6a4932f92464fc7
Headers show
Series selftests/hid: ensure CKI can compile our new tests on old kernels | expand

Commit Message

Benjamin Tissoires June 27, 2024, 3:49 p.m. UTC 
In the same way than commit ae7487d112cf ("selftests/hid: ensure we can
compile the tests on kernels pre-6.3") we should expose struct hid_bpf_ops
when it's not available in vmlinux.h.

So unexpose an eventual struct hid_bpf_ops, include vmlinux.h, and
re-export struct hid_bpf_ops.

Fixes: d7696738d66b ("selftests/hid: convert the hid_bpf selftests with struct_ops")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/r/202406270328.bscLN1IF-lkp@intel.com/
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
---
Same situation than in an early report when HID-BPF was initially
included: the automatically generated vmlinux.h doesn't contain all of
the required structs and the compilation of the bpf program fails.
---
 tools/testing/selftests/hid/progs/hid_bpf_helpers.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)


---
base-commit: d3e15189bfd4d0a9d3a7ad8bd0e6ebb1c0419f93
change-id: 20240627-fix-cki-f372855cbf6f

Best regards,
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Patch

diff --git a/tools/testing/selftests/hid/progs/hid_bpf_helpers.h b/tools/testing/selftests/hid/progs/hid_bpf_helpers.h
index c72e44321764..5a911f0e8625 100644
--- a/tools/testing/selftests/hid/progs/hid_bpf_helpers.h
+++ b/tools/testing/selftests/hid/progs/hid_bpf_helpers.h
@@ -7,6 +7,7 @@ 
 
 /* "undefine" structs and enums in vmlinux.h, because we "override" them below */
 #define hid_bpf_ctx hid_bpf_ctx___not_used
+#define hid_bpf_ops hid_bpf_ops___not_used
 #define hid_report_type hid_report_type___not_used
 #define hid_class_request hid_class_request___not_used
 #define hid_bpf_attach_flags hid_bpf_attach_flags___not_used
@@ -24,6 +25,7 @@ 
 #include "vmlinux.h"
 
 #undef hid_bpf_ctx
+#undef hid_bpf_ops
 #undef hid_report_type
 #undef hid_class_request
 #undef hid_bpf_attach_flags
@@ -68,6 +70,20 @@  enum hid_class_request {
 	HID_REQ_SET_PROTOCOL		= 0x0B,
 };
 
+struct hid_bpf_ops {
+	int			hid_id;
+	u32			flags;
+	struct list_head	list;
+	int (*hid_device_event)(struct hid_bpf_ctx *ctx, enum hid_report_type report_type,
+				__u64 source);
+	int (*hid_rdesc_fixup)(struct hid_bpf_ctx *ctx);
+	int (*hid_hw_request)(struct hid_bpf_ctx *ctx, unsigned char reportnum,
+			       enum hid_report_type rtype, enum hid_class_request reqtype,
+			       __u64 source);
+	int (*hid_hw_output_report)(struct hid_bpf_ctx *ctx, __u64 source);
+	struct hid_device *hdev;
+};
+
 #ifndef BPF_F_BEFORE
 #define BPF_F_BEFORE (1U << 3)
 #endif