/* SPDX-License-Identifier: GPL-2.0 */
#ifndef PERF_UTIL_BPF_FILTER_H
#define PERF_UTIL_BPF_FILTER_H

#include <linux/list.h>

#include "bpf_skel/sample-filter.h"
#include "util/debug.h"

struct perf_bpf_filter_expr {
        struct list_head list;
        struct list_head groups;
        enum perf_bpf_filter_op op;
        int part;
        enum perf_bpf_filter_term term;
        unsigned long val;
};

struct evsel;
struct target;

/* path in BPF-fs for the pinned program and maps */
#define PERF_BPF_FILTER_PIN_PATH  "perf_filter"

#ifdef HAVE_BPF_SKEL
struct perf_bpf_filter_expr *perf_bpf_filter_expr__new(enum perf_bpf_filter_term term,
                                                       int part,
                                                       enum perf_bpf_filter_op op,
                                                       unsigned long val);
int perf_bpf_filter__parse(struct list_head *expr_head, const char *str);
int perf_bpf_filter__prepare(struct evsel *evsel, struct target *target);
int perf_bpf_filter__destroy(struct evsel *evsel);
u64 perf_bpf_filter__lost_count(struct evsel *evsel);
int perf_bpf_filter__pin(void);
int perf_bpf_filter__unpin(void);

#else /* !HAVE_BPF_SKEL */

#include <errno.h>

static inline int perf_bpf_filter__parse(struct list_head *expr_head __maybe_unused,
                                         const char *str __maybe_unused)
{
        pr_err("Error: BPF filter is requested but perf is not built with BPF.\n"
                "\tPlease make sure to build with libbpf and BPF skeleton.\n");
        return -EOPNOTSUPP;
}
static inline int perf_bpf_filter__prepare(struct evsel *evsel __maybe_unused,
                                           struct target *target __maybe_unused)
{
        return -EOPNOTSUPP;
}
static inline int perf_bpf_filter__destroy(struct evsel *evsel __maybe_unused)
{
        return -EOPNOTSUPP;
}
static inline u64 perf_bpf_filter__lost_count(struct evsel *evsel __maybe_unused)
{
        return 0;
}
static inline int perf_bpf_filter__pin(void)
{
        return -EOPNOTSUPP;
}
static inline int perf_bpf_filter__unpin(void)
{
        return -EOPNOTSUPP;
}
#endif /* HAVE_BPF_SKEL*/
#endif /* PERF_UTIL_BPF_FILTER_H */