ikestat_add
#define ikestat_inc(env, c) ikestat_add(env, c, 1)
#define ikestat_dec(env, c) ikestat_add(env, c, -1)
ikestat_add(env, ikes_csa_created, 2);
ikestat_add(env, ikes_frag_rcvd_drop, sa_frag->frag_count + 1);
ikestat_add(env, ikes_frag_reass_ok, sa_frag->frag_total);
ikestat_add(env, ikes_frag_reass_drop, sa_frag->frag_total);