-void *__nf_ct_ext_add_length(struct nf_conn *ct, enum nf_ct_ext_id id,
- size_t var_alloc_len, gfp_t gfp);
-
-#define nf_ct_ext_add(ct, id, gfp) \
- ((id##_TYPE *)__nf_ct_ext_add_length((ct), (id), 0, (gfp)))
-#define nf_ct_ext_add_length(ct, id, len, gfp) \
- ((id##_TYPE *)__nf_ct_ext_add_length((ct), (id), (len), (gfp)))
-
-#define NF_CT_EXT_F_PREALLOC 0x0001