DRBD_A_DISK_CONF_C_PLAN_AHEAD
if (nla_put_u32(skb, DRBD_A_DISK_CONF_C_PLAN_AHEAD, s->c_plan_ahead))
[DRBD_A_DISK_CONF_C_PLAN_AHEAD] = { .type = NLA_U32, },
nla = ntb[DRBD_A_DISK_CONF_C_PLAN_AHEAD];