diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 62903302935e..7deab98720ee 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -6758,6 +6758,17 @@ void *bpf_map__priv(const struct bpf_map *map) return map ? map->priv : ERR_PTR(-EINVAL); } +int bpf_map__set_initial_value(struct bpf_map *map, + const void *data, size_t size) +{ + if (!map->mmaped || map->libbpf_type == LIBBPF_MAP_KCONFIG || + size != map->def.value_size || map->fd >= 0) + return -EINVAL; + + memcpy(map->mmaped, data, size); + return 0; +} + bool bpf_map__is_offload_neutral(const struct bpf_map *map) { return map->def.type == BPF_MAP_TYPE_PERF_EVENT_ARRAY; diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index bf7a35a9556d..958ae71c116e 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -407,6 +407,8 @@ typedef void (*bpf_map_clear_priv_t)(struct bpf_map *, void *); LIBBPF_API int bpf_map__set_priv(struct bpf_map *map, void *priv, bpf_map_clear_priv_t clear_priv); LIBBPF_API void *bpf_map__priv(const struct bpf_map *map); +LIBBPF_API int bpf_map__set_initial_value(struct bpf_map *map, + const void *data, size_t size); LIBBPF_API int bpf_map__reuse_fd(struct bpf_map *map, int fd); LIBBPF_API int bpf_map__resize(struct bpf_map *map, __u32 max_entries); LIBBPF_API bool bpf_map__is_offload_neutral(const struct bpf_map *map); diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index dcc87db3ca8a..159826b36b38 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -243,6 +243,7 @@ LIBBPF_0.0.8 { bpf_link__pin; bpf_link__pin_path; bpf_link__unpin; + bpf_map__set_initial_value; bpf_program__set_attach_target; bpf_set_link_xdp_fd_opts; } LIBBPF_0.0.7;