aa_unpack_u16_chunk
size_t aa_unpack_u16_chunk(struct aa_ext *e, char **chunk);
EXPORT_SYMBOL_IF_KUNIT(aa_unpack_u16_chunk);
size_t size = aa_unpack_u16_chunk(e, &tag);
size = aa_unpack_u16_chunk(e, &src_str);
size = aa_unpack_u16_chunk(puf->e, &chunk);
size = aa_unpack_u16_chunk(puf->e, &chunk);
size = aa_unpack_u16_chunk(puf->e, &chunk);