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freebsd-skq/sys/dev/ocs_fc/ocs_scsi.h
Kenneth D. Merry ef270ab1b6 Bring in the Broadcom/Emulex Fibre Channel driver, ocs_fc(4). 
The ocs_fc(4) driver supports the following hardware:

Emulex 16/8G FC GEN 5 HBAS
	LPe15004 FC Host Bus Adapters
	LPe160XX FC Host Bus Adapters

Emulex 32/16G FC GEN 6 HBAS
	LPe3100X FC Host Bus Adapters
	LPe3200X FC Host Bus Adapters

The driver supports target and initiator mode, and also supports FC-Tape.

Note that the driver only currently works on little endian platforms.  It
is only included in the module build for amd64 and i386, and in GENERIC
on amd64 only.

Submitted by:	Ram Kishore Vegesna <ram.vegesna@broadcom.com>
Reviewed by:	mav
MFC after:	5 days
Relnotes:	yes
Sponsored by:	Broadcom
Differential Revision:	https://reviews.freebsd.org/D11423
2018-03-30 15:28:25 +00:00

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/*-
* Copyright (c) 2017 Broadcom. All rights reserved.
* The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
/**
* @file
* OCS SCSI API declarations
*
*/
#if !defined(__OCS_SCSI_H__)
#define __OCS_SCSI_H__
#include "ocs_ddump.h"
#include "ocs_mgmt.h"
#include "ocs_utils.h"
/* ocs_scsi_rcv_cmd() ocs_scsi_rcv_tmf() flags */
#define OCS_SCSI_CMD_DIR_IN (1U << 0)
#define OCS_SCSI_CMD_DIR_OUT (1U << 1)
#define OCS_SCSI_CMD_SIMPLE (1U << 2)
#define OCS_SCSI_CMD_HEAD_OF_QUEUE (1U << 3)
#define OCS_SCSI_CMD_ORDERED (1U << 4)
#define OCS_SCSI_CMD_UNTAGGED (1U << 5)
#define OCS_SCSI_CMD_ACA (1U << 6)
#define OCS_SCSI_FIRST_BURST_ERR (1U << 7)
#define OCS_SCSI_FIRST_BURST_ABORTED (1U << 8)
/* ocs_scsi_send_rd_data/recv_wr_data/send_resp flags */
#define OCS_SCSI_LAST_DATAPHASE (1U << 0)
#define OCS_SCSI_NO_AUTO_RESPONSE (1U << 1)
#define OCS_SCSI_LOW_LATENCY (1U << 2)
#define OCS_SCSI_WQ_STEERING_SHIFT (16)
#define OCS_SCSI_WQ_STEERING_MASK (0xf << OCS_SCSI_WQ_STEERING_SHIFT)
#define OCS_SCSI_WQ_STEERING_CLASS (0 << OCS_SCSI_WQ_STEERING_SHIFT)
#define OCS_SCSI_WQ_STEERING_REQUEST (1 << OCS_SCSI_WQ_STEERING_SHIFT)
#define OCS_SCSI_WQ_STEERING_CPU (2 << OCS_SCSI_WQ_STEERING_SHIFT)
#define OCS_SCSI_WQ_CLASS_SHIFT (20)
#define OCS_SCSI_WQ_CLASS_MASK (0xf << OCS_SCSI_WQ_CLASS_SHIFT)
#define OCS_SCSI_WQ_CLASS(x) ((x & OCS_SCSI_WQ_CLASS_MASK) << OCS_SCSI_WQ_CLASS_SHIFT)
#define OCS_SCSI_WQ_CLASS_LOW_LATENCY (1)
/*!
* @defgroup scsi_api_base SCSI Base Target/Initiator
* @defgroup scsi_api_target SCSI Target
* @defgroup scsi_api_initiator SCSI Initiator
*/
/**
* @brief SCSI command response.
*
* This structure is used by target-servers to specify SCSI status and
* sense data. In this case all but the @b residual element are used. For
* initiator-clients, this structure is used by the SCSI API to convey the
* response data for issued commands, including the residual element.
*/
typedef struct {
uint8_t scsi_status; /**< SCSI status */
uint16_t scsi_status_qualifier; /**< SCSI status qualifier */
uint8_t *response_data; /**< pointer to response data buffer */
uint32_t response_data_length; /**< length of response data buffer (bytes) */
uint8_t *sense_data; /**< pointer to sense data buffer */
uint32_t sense_data_length; /**< length of sense data buffer (bytes) */
int32_t residual; /**< command residual (not used for target), positive value
* indicates an underflow, negative value indicates overflow
*/
uint32_t response_wire_length; /**< Command response length received in wcqe */
} ocs_scsi_cmd_resp_t;
/* Status values returned by IO callbacks */
typedef enum {
OCS_SCSI_STATUS_GOOD = 0,
OCS_SCSI_STATUS_ABORTED,
OCS_SCSI_STATUS_ERROR,
OCS_SCSI_STATUS_DIF_GUARD_ERROR,
OCS_SCSI_STATUS_DIF_REF_TAG_ERROR,
OCS_SCSI_STATUS_DIF_APP_TAG_ERROR,
OCS_SCSI_STATUS_DIF_UNKNOWN_ERROR,
OCS_SCSI_STATUS_PROTOCOL_CRC_ERROR,
OCS_SCSI_STATUS_NO_IO,
OCS_SCSI_STATUS_ABORT_IN_PROGRESS,
OCS_SCSI_STATUS_CHECK_RESPONSE,
OCS_SCSI_STATUS_COMMAND_TIMEOUT,
OCS_SCSI_STATUS_TIMEDOUT_AND_ABORTED,
OCS_SCSI_STATUS_SHUTDOWN,
OCS_SCSI_STATUS_NEXUS_LOST,
} ocs_scsi_io_status_e;
/* SCSI command status */
#define SCSI_STATUS_GOOD 0x00
#define SCSI_STATUS_CHECK_CONDITION 0x02
#define SCSI_STATUS_CONDITION_MET 0x04
#define SCSI_STATUS_BUSY 0x08
#define SCSI_STATUS_RESERVATION_CONFLICT 0x18
#define SCSI_STATUS_TASK_SET_FULL 0x28
#define SCSI_STATUS_ACA_ACTIVE 0x30
#define SCSI_STATUS_TASK_ABORTED 0x40
/* Callback used by send_rd_data(), recv_wr_data(), send_resp() */
typedef int32_t (*ocs_scsi_io_cb_t)(ocs_io_t *io, ocs_scsi_io_status_e status, uint32_t flags,
void *arg);
/* Callback used by send_rd_io(), send_wr_io() */
typedef int32_t (*ocs_scsi_rsp_io_cb_t)(ocs_io_t *io, ocs_scsi_io_status_e status, ocs_scsi_cmd_resp_t *rsp,
uint32_t flags, void *arg);
/* ocs_scsi_cb_t flags */
#define OCS_SCSI_IO_CMPL (1U << 0) /* IO completed */
#define OCS_SCSI_IO_CMPL_RSP_SENT (1U << 1) /* IO completed, response sent */
#define OCS_SCSI_IO_ABORTED (1U << 2) /* IO was aborted */
/* ocs_scsi_recv_tmf() request values */
typedef enum {
OCS_SCSI_TMF_ABORT_TASK = 1,
OCS_SCSI_TMF_QUERY_TASK_SET,
OCS_SCSI_TMF_ABORT_TASK_SET,
OCS_SCSI_TMF_CLEAR_TASK_SET,
OCS_SCSI_TMF_QUERY_ASYNCHRONOUS_EVENT,
OCS_SCSI_TMF_LOGICAL_UNIT_RESET,
OCS_SCSI_TMF_CLEAR_ACA,
OCS_SCSI_TMF_TARGET_RESET,
} ocs_scsi_tmf_cmd_e;
/* ocs_scsi_send_tmf_resp() response values */
typedef enum {
OCS_SCSI_TMF_FUNCTION_COMPLETE = 1,
OCS_SCSI_TMF_FUNCTION_SUCCEEDED,
OCS_SCSI_TMF_FUNCTION_IO_NOT_FOUND,
OCS_SCSI_TMF_FUNCTION_REJECTED,
OCS_SCSI_TMF_INCORRECT_LOGICAL_UNIT_NUMBER,
OCS_SCSI_TMF_SERVICE_DELIVERY,
} ocs_scsi_tmf_resp_e;
/**
* @brief property names for ocs_scsi_get_property() functions
*/
typedef enum {
OCS_SCSI_MAX_SGE,
OCS_SCSI_MAX_SGL,
OCS_SCSI_WWNN,
OCS_SCSI_WWPN,
OCS_SCSI_SERIALNUMBER,
OCS_SCSI_PARTNUMBER,
OCS_SCSI_PORTNUM,
OCS_SCSI_BIOS_VERSION_STRING,
OCS_SCSI_MAX_IOS,
OCS_SCSI_DIF_CAPABLE,
OCS_SCSI_DIF_MULTI_SEPARATE,
OCS_SCSI_MAX_FIRST_BURST,
OCS_SCSI_ENABLE_TASK_SET_FULL,
} ocs_scsi_property_e;
#define DIF_SIZE 8
/**
* @brief T10 DIF operations
*
* WARNING: do not reorder or insert to this list without making appropriate changes in ocs_dif.c
*/
typedef enum {
OCS_SCSI_DIF_OPER_DISABLED,
OCS_SCSI_DIF_OPER_IN_NODIF_OUT_CRC,
OCS_SCSI_DIF_OPER_IN_CRC_OUT_NODIF,
OCS_SCSI_DIF_OPER_IN_NODIF_OUT_CHKSUM,
OCS_SCSI_DIF_OPER_IN_CHKSUM_OUT_NODIF,
OCS_SCSI_DIF_OPER_IN_CRC_OUT_CRC,
OCS_SCSI_DIF_OPER_IN_CHKSUM_OUT_CHKSUM,
OCS_SCSI_DIF_OPER_IN_CRC_OUT_CHKSUM,
OCS_SCSI_DIF_OPER_IN_CHKSUM_OUT_CRC,
OCS_SCSI_DIF_OPER_IN_RAW_OUT_RAW,
} ocs_scsi_dif_oper_e;
#define OCS_SCSI_DIF_OPER_PASS_THRU OCS_SCSI_DIF_OPER_IN_CRC_OUT_CRC
#define OCS_SCSI_DIF_OPER_STRIP OCS_SCSI_DIF_OPER_IN_CRC_OUT_NODIF
#define OCS_SCSI_DIF_OPER_INSERT OCS_SCSI_DIF_OPER_IN_NODIF_OUT_CRC
/**
* @brief T10 DIF block sizes
*/
typedef enum {
OCS_SCSI_DIF_BK_SIZE_512,
OCS_SCSI_DIF_BK_SIZE_1024,
OCS_SCSI_DIF_BK_SIZE_2048,
OCS_SCSI_DIF_BK_SIZE_4096,
OCS_SCSI_DIF_BK_SIZE_520,
OCS_SCSI_DIF_BK_SIZE_4104
} ocs_scsi_dif_blk_size_e;
/**
* @brief generic scatter-gather list structure
*/
typedef struct ocs_scsi_sgl_s {
uintptr_t addr; /**< physical address */
uintptr_t dif_addr; /**< address of DIF segment, zero if DIF is interleaved */
size_t len; /**< length */
} ocs_scsi_sgl_t;
/**
* @brief T10 DIF information passed to the transport
*/
typedef struct ocs_scsi_dif_info_s {
ocs_scsi_dif_oper_e dif_oper;
ocs_scsi_dif_blk_size_e blk_size;
uint32_t ref_tag;
uint32_t app_tag:16,
check_ref_tag:1,
check_app_tag:1,
check_guard:1,
dif_separate:1,
/* If the APP TAG is 0xFFFF, disable checking the REF TAG and CRC fields */
disable_app_ffff:1,
/* if the APP TAG is 0xFFFF and REF TAG is 0xFFFF_FFFF, disable checking the received CRC field. */
disable_app_ref_ffff:1,
:10;
uint64_t lba;
} ocs_scsi_dif_info_t;
/* Return values for calls from base driver to target-server/initiator-client */
#define OCS_SCSI_CALL_COMPLETE 0 /* All work is done */
#define OCS_SCSI_CALL_ASYNC 1 /* Work will be completed asynchronously */
/* Calls from target/initiator to base driver */
typedef enum {
OCS_SCSI_IO_ROLE_ORIGINATOR,
OCS_SCSI_IO_ROLE_RESPONDER,
} ocs_scsi_io_role_e;
extern void ocs_scsi_io_alloc_enable(ocs_node_t *node);
extern void ocs_scsi_io_alloc_disable(ocs_node_t *node);
extern ocs_io_t *ocs_scsi_io_alloc(ocs_node_t *node, ocs_scsi_io_role_e role);
extern void ocs_scsi_io_free(ocs_io_t *io);
extern ocs_io_t *ocs_io_get_instance(ocs_t *ocs, uint32_t index);
extern void ocs_scsi_register_bounce(ocs_t *ocs, void(*fctn)(void(*fctn)(void *arg), void *arg,
uint32_t s_id, uint32_t d_id, uint32_t ox_id));
/* Calls from base driver to target-server */
extern int32_t ocs_scsi_tgt_driver_init(void);
extern int32_t ocs_scsi_tgt_driver_exit(void);
extern int32_t ocs_scsi_tgt_io_init(ocs_io_t *io);
extern int32_t ocs_scsi_tgt_io_exit(ocs_io_t *io);
extern int32_t ocs_scsi_tgt_new_device(ocs_t *ocs);
extern int32_t ocs_scsi_tgt_del_device(ocs_t *ocs);
extern int32_t ocs_scsi_tgt_new_domain(ocs_domain_t *domain);
extern void ocs_scsi_tgt_del_domain(ocs_domain_t *domain);
extern int32_t ocs_scsi_tgt_new_sport(ocs_sport_t *sport);
extern void ocs_scsi_tgt_del_sport(ocs_sport_t *sport);
extern void ocs_scsi_sport_deleted(ocs_sport_t *sport);
extern int32_t ocs_scsi_validate_initiator(ocs_node_t *node);
extern int32_t ocs_scsi_new_initiator(ocs_node_t *node);
typedef enum {
OCS_SCSI_INITIATOR_DELETED,
OCS_SCSI_INITIATOR_MISSING,
} ocs_scsi_del_initiator_reason_e;
extern int32_t ocs_scsi_del_initiator(ocs_node_t *node, ocs_scsi_del_initiator_reason_e reason);
extern int32_t ocs_scsi_recv_cmd(ocs_io_t *io, uint64_t lun, uint8_t *cdb, uint32_t cdb_len, uint32_t flags);
extern int32_t ocs_scsi_recv_cmd_first_burst(ocs_io_t *io, uint64_t lun, uint8_t *cdb, uint32_t cdb_len, uint32_t flags,
ocs_dma_t first_burst_buffers[], uint32_t first_burst_bytes);
extern int32_t ocs_scsi_recv_tmf(ocs_io_t *tmfio, uint64_t lun, ocs_scsi_tmf_cmd_e cmd, ocs_io_t *abortio,
uint32_t flags);
extern ocs_sport_t *ocs_sport_get_instance(ocs_domain_t *domain, uint32_t index);
extern ocs_domain_t *ocs_domain_get_instance(ocs_t *ocs, uint32_t index);
/* Calls from target-server to base driver */
extern int32_t ocs_scsi_send_rd_data(ocs_io_t *io, uint32_t flags,
ocs_scsi_dif_info_t *dif_info,
ocs_scsi_sgl_t *sgl, uint32_t sgl_count,
uint32_t wire_len, ocs_scsi_io_cb_t cb, void *arg);
extern int32_t ocs_scsi_recv_wr_data(ocs_io_t *io, uint32_t flags,
ocs_scsi_dif_info_t *dif_info,
ocs_scsi_sgl_t *sgl, uint32_t sgl_count,
uint32_t wire_len, ocs_scsi_io_cb_t cb, void *arg);
extern int32_t ocs_scsi_send_resp(ocs_io_t *io, uint32_t flags, ocs_scsi_cmd_resp_t *rsp,
ocs_scsi_io_cb_t cb, void *arg);
extern int32_t ocs_scsi_send_tmf_resp(ocs_io_t *io, ocs_scsi_tmf_resp_e rspcode, uint8_t addl_rsp_info[3],
ocs_scsi_io_cb_t cb, void *arg);
extern int32_t ocs_scsi_tgt_abort_io(ocs_io_t *io, ocs_scsi_io_cb_t cb, void *arg);
extern void ocs_scsi_io_complete(ocs_io_t *io);
extern uint32_t ocs_scsi_get_property(ocs_t *ocs, ocs_scsi_property_e prop);
extern void *ocs_scsi_get_property_ptr(ocs_t *ocs, ocs_scsi_property_e prop);
extern void ocs_scsi_del_initiator_complete(ocs_node_t *node);
extern void ocs_scsi_update_first_burst_transferred(ocs_io_t *io, uint32_t transferred);
/* Calls from base driver to initiator-client */
extern int32_t ocs_scsi_ini_driver_init(void);
extern int32_t ocs_scsi_ini_driver_exit(void);
extern int32_t ocs_scsi_ini_io_init(ocs_io_t *io);
extern int32_t ocs_scsi_ini_io_exit(ocs_io_t *io);
extern int32_t ocs_scsi_ini_new_device(ocs_t *ocs);
extern int32_t ocs_scsi_ini_del_device(ocs_t *ocs);
extern int32_t ocs_scsi_ini_new_domain(ocs_domain_t *domain);
extern void ocs_scsi_ini_del_domain(ocs_domain_t *domain);
extern int32_t ocs_scsi_ini_new_sport(ocs_sport_t *sport);
extern void ocs_scsi_ini_del_sport(ocs_sport_t *sport);
extern int32_t ocs_scsi_new_target(ocs_node_t *node);
typedef enum {
OCS_SCSI_TARGET_DELETED,
OCS_SCSI_TARGET_MISSING,
} ocs_scsi_del_target_reason_e;
extern int32_t ocs_scsi_del_target(ocs_node_t *node, ocs_scsi_del_target_reason_e reason);
/* Calls from the initiator-client to the base driver */
extern int32_t ocs_scsi_send_rd_io(ocs_node_t *node, ocs_io_t *io, uint64_t lun, void *cdb, uint32_t cdb_len,
ocs_scsi_dif_info_t *dif_info,
ocs_scsi_sgl_t *sgl, uint32_t sgl_count, uint32_t wire_len, ocs_scsi_rsp_io_cb_t cb, void *arg);
extern int32_t ocs_scsi_send_wr_io(ocs_node_t *node, ocs_io_t *io, uint64_t lun, void *cdb, uint32_t cdb_len,
ocs_scsi_dif_info_t *dif_info,
ocs_scsi_sgl_t *sgl, uint32_t sgl_count, uint32_t wire_len, ocs_scsi_rsp_io_cb_t cb, void *arg);
extern int32_t ocs_scsi_send_wr_io_first_burst(ocs_node_t *node, ocs_io_t *io, uint64_t lun, void *cdb, uint32_t cdb_len,
ocs_scsi_dif_info_t *dif_info,
ocs_scsi_sgl_t *sgl, uint32_t sgl_count, uint32_t wire_len, uint32_t first_burst,
ocs_scsi_rsp_io_cb_t cb, void *arg);
extern int32_t ocs_scsi_send_tmf(ocs_node_t *node, ocs_io_t *io, ocs_io_t *io_to_abort, uint64_t lun,
ocs_scsi_tmf_cmd_e tmf, ocs_scsi_sgl_t *sgl, uint32_t sgl_count, uint32_t len, ocs_scsi_rsp_io_cb_t cb, void *arg);
extern int32_t ocs_scsi_send_nodata_io(ocs_node_t *node, ocs_io_t *io, uint64_t lun, void *cdb, uint32_t cdb_len, ocs_scsi_rsp_io_cb_t cb, void *arg);
extern void ocs_scsi_del_target_complete(ocs_node_t *node);
typedef enum {
OCS_SCSI_DDUMP_DEVICE,
OCS_SCSI_DDUMP_DOMAIN,
OCS_SCSI_DDUMP_SPORT,
OCS_SCSI_DDUMP_NODE,
OCS_SCSI_DDUMP_IO,
} ocs_scsi_ddump_type_e;
/* base driver to target/initiator */
struct ocs_scsi_vaddr_len_s {
void *vaddr;
uint32_t length;
} ;
extern int32_t ocs_scsi_get_block_vaddr(ocs_io_t *io, uint64_t blocknumber, ocs_scsi_vaddr_len_t addrlen[],
uint32_t max_addrlen, void **dif_vaddr);
extern void ocs_scsi_ini_ddump(ocs_textbuf_t *textbuf, ocs_scsi_ddump_type_e type, void *obj);
extern void ocs_scsi_tgt_ddump(ocs_textbuf_t *textbuf, ocs_scsi_ddump_type_e type, void *obj);
/* Calls within base driver */
extern int32_t ocs_scsi_io_dispatch(ocs_io_t *io, void *cb);
extern int32_t ocs_scsi_io_dispatch_abort(ocs_io_t *io, void *cb);
extern void ocs_scsi_check_pending(ocs_t *ocs);
extern uint32_t ocs_scsi_dif_blocksize(ocs_scsi_dif_info_t *dif_info);
extern int32_t ocs_scsi_dif_set_blocksize(ocs_scsi_dif_info_t *dif_info, uint32_t blocksize);
extern int32_t ocs_scsi_dif_mem_blocksize(ocs_scsi_dif_info_t *dif_info, int wiretomem);
extern int32_t ocs_scsi_dif_wire_blocksize(ocs_scsi_dif_info_t *dif_info, int wiretomem);
uint32_t ocs_get_crn(ocs_node_t *node, uint8_t *crn, uint64_t lun);
void ocs_del_crn(ocs_node_t *node);
void ocs_reset_crn(ocs_node_t *node, uint64_t lun);
/**
* @brief Notification from base driver that domain is in force-free path.
*
* @par Description Domain is forcefully going away. Cleanup any resources associated with it.
*
* @param domain Pointer to domain being free'd.
*
* @return None.
*/
static inline void
ocs_scsi_notify_domain_force_free(ocs_domain_t *domain)
{
/* Nothing to do */
return;
}
/**
* @brief Notification from base driver that sport is in force-free path.
*
* @par Description Sport is forcefully going away. Cleanup any resources associated with it.
*
* @param sport Pointer to sport being free'd.
*
* @return None.
*/
static inline void
ocs_scsi_notify_sport_force_free(ocs_sport_t *sport)
{
/* Nothing to do */
return;
}
/**
* @brief Notification from base driver that node is in force-free path.
*
* @par Description Node is forcefully going away. Cleanup any resources associated with it.
*
* @param node Pointer to node being free'd.
*
* @return None.
*/
static inline void
ocs_scsi_notify_node_force_free(ocs_node_t *node)
{
/* Nothing to do */
return;
}
#endif /* __OCS_SCSI_H__ */
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