MSG_HEAD_OF_QUEUE_TASK
case MSG_HEAD_OF_QUEUE_TASK:
case MSG_HEAD_OF_QUEUE_TASK:
case MSG_HEAD_OF_QUEUE_TASK:
atiop->tag_action = MSG_HEAD_OF_QUEUE_TASK;
((ccb->tag_action == MSG_HEAD_OF_QUEUE_TASK)? FCP_CMND_TASK_ATTR_HEAD:\