ctl_set_prkey
ctl_set_prkey(lun, pr_key.pr_iid,
static void ctl_set_prkey(struct ctl_lun *lun, uint32_t residx, uint64_t key);
ctl_set_prkey(lun, residx, sa_res_key);
ctl_set_prkey(lun, msg->pr.pr_info.residx,