diff --git a/include/linux/bpf.h b/include/linux/bpf.h index cc700925b802..e7ee089e8a31 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -1985,6 +1985,7 @@ static inline void bpf_module_put(const void *data, struct module *owner) module_put(owner); } int bpf_struct_ops_link_create(union bpf_attr *attr); +u32 bpf_struct_ops_id(const void *kdata); #ifdef CONFIG_NET /* Define it here to avoid the use of forward declaration */ diff --git a/kernel/bpf/bpf_struct_ops.c b/kernel/bpf/bpf_struct_ops.c index 687a3e9c76f5..a41e6730edcf 100644 --- a/kernel/bpf/bpf_struct_ops.c +++ b/kernel/bpf/bpf_struct_ops.c @@ -1174,6 +1174,18 @@ void bpf_struct_ops_put(const void *kdata) bpf_map_put(&st_map->map); } +u32 bpf_struct_ops_id(const void *kdata) +{ + struct bpf_struct_ops_value *kvalue; + struct bpf_struct_ops_map *st_map; + + kvalue = container_of(kdata, struct bpf_struct_ops_value, data); + st_map = container_of(kvalue, struct bpf_struct_ops_map, kvalue); + + return st_map->map.id; +} +EXPORT_SYMBOL_GPL(bpf_struct_ops_id); + static bool bpf_struct_ops_valid_to_reg(struct bpf_map *map) { struct bpf_struct_ops_map *st_map = (struct bpf_struct_ops_map *)map;