/*******************************************************************************
*
* This file contains the Linux/SCSI LLD virtual SCSI initiator driver
* for emulated SAS initiator ports
*
* © Copyright 2011 RisingTide Systems LLC.
*
* Licensed to the Linux Foundation under the General Public License (GPL) version 2.
*
* Author: Nicholas A. Bellinger <nab@risingtidesystems.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
****************************************************************************/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/configfs.h>
#include <scsi/scsi.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_cmnd.h>
#include <target/target_core_base.h>
#include <target/target_core_fabric.h>
#include <target/target_core_fabric_configfs.h>
#include <target/target_core_configfs.h>
#include "tcm_loop.h"
#define to_tcm_loop_hba(hba) container_of(hba, struct tcm_loop_hba, dev)
/* Local pointer to allocated TCM configfs fabric module */
static struct target_fabric_configfs *tcm_loop_fabric_configfs;
static struct workqueue_struct *tcm_loop_workqueue;
static struct kmem_cache *tcm_loop_cmd_cache;
static int tcm_loop_hba_no_cnt;
static int tcm_loop_queue_status(struct se_cmd *se_cmd);
/*
* Called from struct target_core_fabric_ops->check_stop_free()
*/
static int tcm_loop_check_stop_free(struct se_cmd *se_cmd)
{
/*
* Do not release struct se_cmd's containing a valid TMR
* pointer. These will be released directly in tcm_loop_device_reset()
* with transport_generic_free_cmd().
*/
if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
return 0;
/*
* Release the struct se_cmd, which will make a callback to release
* struct tcm_loop_cmd * in tcm_loop_deallocate_core_cmd()
*/
transport_generic_free_cmd(se_cmd, 0);
return 1;
}
static void tcm_loop_release_cmd(struct se_cmd *se_cmd)
{
struct tcm_loop_cmd *tl_cmd 