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/*
* Oracle Linux DTrace.
* Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
* Licensed under the Universal Permissive License v 1.0 as shown at
* http://oss.oracle.com/licenses/upl.
*/
#ifndef _DT_BPF_H
#define _DT_BPF_H
#include <sys/dtrace_types.h>
#include <linux/bpf.h>
#include <linux/perf_event.h>
#include <dtrace/difo.h>
#include <dt_btf.h>
#include <dt_impl.h>
#include <dt_probe.h>
struct dtrace_hdl;
#ifdef __cplusplus
extern "C" {
#endif
/*
* BPF features.
*/
#define BPF_FEAT_FENTRY 0x1 /* fentry/fexit support */
#define BPF_HAS(dtp, feat) ((dtp)->dt_bpffeatures & (feat))
#define BPF_SET_FEATURE(dtp, feat) \
do { \
(dtp)->dt_bpffeatures |= (feat); \
} while (0)
#define DT_CONST_PRID 1
#define DT_CONST_ARGC 2
#define DT_CONST_STBSZ 3
#define DT_CONST_STRSZ 4
#define DT_CONST_STKSIZ 5
#define DT_CONST_BOOTTM 6
#define DT_CONST_NSPEC 7
#define DT_CONST_NCPUS 8
#define DT_CONST_PC 9
#define DT_CONST_TUPSZ 10
#define DT_CONST_TASK_PID 11
#define DT_CONST_TASK_TGID 12
#define DT_CONST_TASK_REAL_PARENT 13
#define DT_CONST_TASK_COMM 14
#define DT_CONST_TASK_MM 15
#define DT_CONST_TASK_MM_ARG_START 16
#define DT_CONST_TASK_MM_ARG_END 17
#define DT_CONST_MUTEX_OWNER 18
#define DT_CONST_RWLOCK_CNTS 19
#define DT_CONST_DCTX_RODATA 20
#define DT_CONST_RODATA_OFF 21
#define DT_CONST_RODATA_SIZE 22
#define DT_CONST_ZERO_OFF 23
#define DT_CONST_STACK_OFF 24
#define DT_CONST_STACK_SKIP 25
#define DT_CONST_NPROBES 26
#define DT_BPF_LOG_SIZE_DEFAULT (UINT32_MAX >> 8)
#define DT_BPF_LOG_SIZE_SMALL 4096
extern int dt_perf_event_open(struct perf_event_attr *attr, pid_t pid, int cpu,
int group_fd, unsigned long flags);
extern int dt_bpf(enum bpf_cmd cmd, union bpf_attr *attr);
extern int dt_attach_error(struct dtrace_hdl *, int, ...);
extern int dt_bpf_gmap_create(struct dtrace_hdl *);
extern int dt_bpf_lockmem_error(struct dtrace_hdl *dtp, const char *msg);
extern int dt_bpf_btf_get_info_by_fd(int fd, btf_info_t *info, uint32_t *size);
extern int dt_bpf_btf_get_fd_by_id(uint32_t id);
extern int dt_bpf_btf_get_next_id(uint32_t curr, uint32_t *next);
extern int dt_bpf_map_lookup(int fd, const void *key, void *val);
extern int dt_bpf_map_next_key(int fd, const void *key, void *nxt);
extern int dt_bpf_map_update(int fd, const void *key, const void *val);
extern int dt_bpf_map_delete(int fd, const void *key);
extern int dt_bpf_map_get_fd_by_id(uint32_t id);
extern int dt_bpf_map_lookup_fd(int fd, const void *okey);
extern int dt_bpf_map_lookup_inner(int fd, const void *okey, const void *ikey,
void *val);
extern int dt_bpf_map_update_inner(int fd, const void *okey, const void *ikey,
const void *val);
extern int dt_bpf_prog_attach(enum bpf_prog_type ptype,
enum bpf_attach_type atype, int btf_fd,
uint32_t btf_id, const dtrace_difo_t *dp,
uint32_t log_level, char *log_buf,
size_t log_buf_sz);
extern int dt_bpf_prog_load(struct dtrace_hdl *, const struct dt_probe *prp,
const dtrace_difo_t *dp, uint32_t lvl, char *buf,
size_t sz);
extern int dt_bpf_raw_tracepoint_open(const void *tp, int fd);
extern int dt_bpf_make_progs(struct dtrace_hdl *, uint_t);
extern int dt_bpf_load_prog(dtrace_hdl_t *dtp, const dt_probe_t *prp,
const dtrace_difo_t *dp, uint_t cflags);
extern int dt_bpf_load_progs(struct dtrace_hdl *, uint_t);
extern void dt_bpf_init(struct dtrace_hdl *dtp);
#ifdef __cplusplus
}
#endif
#endif /* _DT_BPF_H */
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