npt_alloc
struct test_nlbuf_attrs *attrs = npt_alloc(ctx->npt, sizeof(*attrs));
char *buf = npt_alloc(npt, maxlen + 1);
char *buf = npt_alloc(npt, NL_MAX_ERROR_BUF);
struct nlattr *nla = npt_alloc(npt, sizeof(*nla) + sizeof(uint32_t));
tmp_hdr = npt_alloc(npt, parser->nl_hdr_off);
((struct sockaddr *)(npt_alloc((_npt), (_len))))
sin_brd = (struct sockaddr_in *)npt_alloc(npt, sizeof(*sin_brd));
struct nlattr *nla_cookie = npt_alloc(npt, nla_len);
mp = npt_alloc(npt, (max_nhops + 2) * sizeof(struct rta_mpath_nh));
struct weightened_nhop *wn = npt_alloc(npt, sizeof(*wn) * num_nhops);
.buf = npt_alloc(npt, KTEST_MAX_BUF),
struct test1_attrs *attrs = npt_alloc(ctx->npt, sizeof(*attrs));