diff options
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index e827542ffa3a..a01eb9584e52 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -2193,19 +2193,25 @@ void *bpf_object__priv(struct bpf_object *obj) } static struct bpf_program * -__bpf_program__iter(struct bpf_program *p, struct bpf_object *obj, int i) +__bpf_program__iter(struct bpf_program *p, struct bpf_object *obj, bool forward) { + size_t nr_programs = obj->nr_programs; ssize_t idx; - if (!obj->programs) + if (!nr_programs) return NULL; + if (!p) + /* Iter from the beginning */ + return forward ? &obj->programs[0] : + &obj->programs[nr_programs - 1]; + if (p->obj != obj) { pr_warning("error: program handler doesn't match object\n"); return NULL; } - idx = (p - obj->programs) + i; + idx = (p - obj->programs) + (forward ? 1 : -1); if (idx >= obj->nr_programs || idx < 0) return NULL; return &obj->programs[idx]; @@ -2216,11 +2222,8 @@ bpf_program__next(struct bpf_program *prev, struct bpf_object *obj) { struct bpf_program *prog = prev; - if (prev == NULL) - return obj->programs; - do { - prog = __bpf_program__iter(prog, obj, 1); + prog = __bpf_program__iter(prog, obj, true); } while (prog && bpf_program__is_function_storage(prog, obj)); return prog; @@ -2231,14 +2234,8 @@ bpf_program__prev(struct bpf_program *next, struct bpf_object *obj) { struct bpf_program *prog = next; - if (next == NULL) { - if (!obj->nr_programs) - return NULL; - return obj->programs + obj->nr_programs - 1; - } - do { - prog = __bpf_program__iter(prog, obj, -1); + prog = __bpf_program__iter(prog, obj, false); } while (prog && bpf_program__is_function_storage(prog, obj)); return prog; |