Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Benjamin Tissoires | 524 | 100.00% | 10 | 100.00% |
Total | 524 | 10 |
/* SPDX-License-Identifier: GPL-2.0-only */ /* Copyright (c) 2022 Benjamin Tissoires */ #ifndef __HID_BPF_HELPERS_H #define __HID_BPF_HELPERS_H /* "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 #define HID_INPUT_REPORT HID_INPUT_REPORT___not_used #define HID_OUTPUT_REPORT HID_OUTPUT_REPORT___not_used #define HID_FEATURE_REPORT HID_FEATURE_REPORT___not_used #define HID_REPORT_TYPES HID_REPORT_TYPES___not_used #define HID_REQ_GET_REPORT HID_REQ_GET_REPORT___not_used #define HID_REQ_GET_IDLE HID_REQ_GET_IDLE___not_used #define HID_REQ_GET_PROTOCOL HID_REQ_GET_PROTOCOL___not_used #define HID_REQ_SET_REPORT HID_REQ_SET_REPORT___not_used #define HID_REQ_SET_IDLE HID_REQ_SET_IDLE___not_used #define HID_REQ_SET_PROTOCOL HID_REQ_SET_PROTOCOL___not_used #include "vmlinux.h" #undef hid_bpf_ctx #undef hid_bpf_ops #undef hid_report_type #undef hid_class_request #undef hid_bpf_attach_flags #undef HID_INPUT_REPORT #undef HID_OUTPUT_REPORT #undef HID_FEATURE_REPORT #undef HID_REPORT_TYPES #undef HID_REQ_GET_REPORT #undef HID_REQ_GET_IDLE #undef HID_REQ_GET_PROTOCOL #undef HID_REQ_SET_REPORT #undef HID_REQ_SET_IDLE #undef HID_REQ_SET_PROTOCOL #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> #include <linux/const.h> enum hid_report_type { HID_INPUT_REPORT = 0, HID_OUTPUT_REPORT = 1, HID_FEATURE_REPORT = 2, HID_REPORT_TYPES, }; struct hid_bpf_ctx { struct hid_device *hid; __u32 allocated_size; union { __s32 retval; __s32 size; }; } __attribute__((preserve_access_index)); enum hid_class_request { HID_REQ_GET_REPORT = 0x01, HID_REQ_GET_IDLE = 0x02, HID_REQ_GET_PROTOCOL = 0x03, HID_REQ_SET_REPORT = 0x09, HID_REQ_SET_IDLE = 0x0A, 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 /* following are kfuncs exported by HID for HID-BPF */ extern __u8 *hid_bpf_get_data(struct hid_bpf_ctx *ctx, unsigned int offset, const size_t __sz) __ksym; extern struct hid_bpf_ctx *hid_bpf_allocate_context(unsigned int hid_id) __ksym; extern void hid_bpf_release_context(struct hid_bpf_ctx *ctx) __ksym; extern int hid_bpf_hw_request(struct hid_bpf_ctx *ctx, __u8 *data, size_t buf__sz, enum hid_report_type type, enum hid_class_request reqtype) __ksym; extern int hid_bpf_hw_output_report(struct hid_bpf_ctx *ctx, __u8 *buf, size_t buf__sz) __ksym; extern int hid_bpf_input_report(struct hid_bpf_ctx *ctx, enum hid_report_type type, __u8 *data, size_t buf__sz) __ksym; extern int hid_bpf_try_input_report(struct hid_bpf_ctx *ctx, enum hid_report_type type, __u8 *data, size_t buf__sz) __ksym; /* bpf_wq implementation */ extern int bpf_wq_init(struct bpf_wq *wq, void *p__map, unsigned int flags) __weak __ksym; extern int bpf_wq_start(struct bpf_wq *wq, unsigned int flags) __weak __ksym; extern int bpf_wq_set_callback_impl(struct bpf_wq *wq, int (callback_fn)(void *map, int *key, void *wq), unsigned int flags__k, void *aux__ign) __ksym; #define bpf_wq_set_callback(timer, cb, flags) \ bpf_wq_set_callback_impl(timer, cb, flags, NULL) #endif /* __HID_BPF_HELPERS_H */
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