Syntax
static const struct dh_group dh_groups[] = {
DH_GROUP(5, 1),
#ifdef ALL_DH_GROUPS
DH_GROUP(1, 1),
DH_GROUP(2, 1),
DH_GROUP(14, 1),
DH_GROUP(15, 1),
DH_GROUP(16, 1),
DH_GROUP(17, 1),
DH_GROUP(18, 1),
DH_GROUP(22, 0),
DH_GROUP(23, 0),
DH_GROUP(24, 0)
#endif
};