/usr/include/iscsi/iscsi.h is in libiscsi-dev 1.4.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __iscsi_h__
#define __iscsi_h__
#include <stdint.h>
#if defined(WIN32)
#define EXTERN __declspec( dllexport )
EXTERN int poll(struct pollfd *fds, int nfsd, int timeout);
#else
#define EXTERN
#endif
struct iscsi_context;
struct sockaddr;
/*
* Syntax for normal and portal/discovery URLs.
*/
#define ISCSI_URL_SYNTAX "\"iscsi://[<username>[%<password>]@]" \
"<host>[:<port>]/<target-iqn>/<lun>\""
#define ISCSI_PORTAL_URL_SYNTAX "\"iscsi://[<username>[%<password>]@]" \
"<host>[:<port>]\""
/*
* The following three functions are used to integrate libiscsi in an event
* system.
*/
/*
* Returns the file descriptor that libiscsi uses.
*/
EXTERN int iscsi_get_fd(struct iscsi_context *iscsi);
/*
* Returns which events that we need to poll for for the iscsi file descriptor.
*/
EXTERN int iscsi_which_events(struct iscsi_context *iscsi);
/*
* Called to process the events when events become available for the iscsi
* file descriptor.
*/
EXTERN int iscsi_service(struct iscsi_context *iscsi, int revents);
/*
* How many commands are in flight.
*/
EXTERN int iscsi_queue_length(struct iscsi_context *iscsi);
/*
* To set tcp keepalive for the session.
* Only options supported by given platform (if any) are set.
*/
int iscsi_set_tcp_keepalive(struct iscsi_context *iscsi, int idle, int count, int interval);
struct iscsi_url {
const char *portal;
const char *target;
const char *user;
const char *passwd;
int lun;
};
/*
* This function is used to parse an iSCSI URL into a iscsi_url structure.
* iSCSI URL format :
* iscsi://[<username>[%<password>]@]<host>[:<port>]/<target-iqn>/<lun>
*
* Function will return a pointer to an iscsi url structure if successful,
* or it will return NULL and set iscsi_get_error() accrodingly if there was a problem
* with the URL.
*
* CHAP username/password can also be provided via environment variables
* LIBISCSI_CHAP_USERNAME=ronnie
* LIBISCSI_CHAP_PASSWORD=password
*
* The returned structure is freed by calling iscsi_destroy_url()
*/
EXTERN struct iscsi_url *iscsi_parse_full_url(struct iscsi_context *iscsi, const char *url);
EXTERN void iscsi_destroy_url(struct iscsi_url *iscsi_url);
/*
* This function is used to parse an iSCSI Portal URL into a iscsi_url structure.
* iSCSI Portal URL format :
* iscsi://[<username>[%<password>]@]<host>[:<port>]
*
* iSCSI Portal URL is used when describing a discovery session, where the target-iqn and the
* lun is not yet known.
*
* Function will return a pointer to an iscsi url structure if successful,
* or it will return NULL and set iscsi_get_error() accrodingly if there was a problem
* with the URL.
*
* CHAP username/password can also be provided via environment variables
* LIBISCSI_CHAP_USERNAME=ronnie
* LIBISCSI_CHAP_PASSWORD=password
*
* The returned structure is freed by calling iscsi_destroy_url()
*/
EXTERN struct iscsi_url *
iscsi_parse_portal_url(struct iscsi_context *iscsi, const char *url);
/*
* This function returns a description of the last encountered error.
*/
EXTERN const char *iscsi_get_error(struct iscsi_context *iscsi);
/*
* Create a context for an ISCSI session.
* Initiator_name is the iqn name we want to identify to the target as.
*
* Returns:
* 0: success
* <0: error
*/
EXTERN struct iscsi_context *iscsi_create_context(const char *initiator_name);
/*
* Destroy an existing ISCSI context and tear down any existing connection.
* Callbacks for any command in flight will be invoked with
* ISCSI_STATUS_CANCELLED.
*
* Returns:
* 0: success
* <0: error
*/
EXTERN int iscsi_destroy_context(struct iscsi_context *iscsi);
/*
* Set an optional alias name to identify with when connecting to the target
*
* Returns:
* 0: success
* <0: error
*/
EXTERN int iscsi_set_alias(struct iscsi_context *iscsi, const char *alias);
/*
* Set the iqn name of the taqget to login to.
* The target name must be set before a normal-login can be initiated.
* Only discovery-logins are possible without setting the target iqn name.
*
* Returns:
* 0: success
* <0: error
*/
EXTERN int iscsi_set_targetname(struct iscsi_context *iscsi, const char *targetname);
/*
* This function returns any target address supplied in a login response when
* the target has moved.
*/
EXTERN const char *iscsi_get_target_address(struct iscsi_context *iscsi);
/* Type of iscsi sessions. Discovery sessions are used to query for what
* targets exist behind the portal connected to. Normal sessions are used to
* log in and do I/O to the SCSI LUNs
*/
enum iscsi_session_type {
ISCSI_SESSION_DISCOVERY = 1,
ISCSI_SESSION_NORMAL = 2
};
/*
* Set the session type for a scsi context.
* Session type can only be set/changed before the context
* is logged in to the target.
*
* Returns:
* 0: success
* <0: error
*/
EXTERN int iscsi_set_session_type(struct iscsi_context *iscsi,
enum iscsi_session_type session_type);
/*
* Types of header digest we support. Default is NONE
*/
enum iscsi_header_digest {
ISCSI_HEADER_DIGEST_NONE = 0,
ISCSI_HEADER_DIGEST_NONE_CRC32C = 1,
ISCSI_HEADER_DIGEST_CRC32C_NONE = 2,
ISCSI_HEADER_DIGEST_CRC32C = 3,
ISCSI_HEADER_DIGEST_LAST = ISCSI_HEADER_DIGEST_CRC32C
};
/*
* Set the desired header digest for a scsi context.
* Header digest can only be set/changed before the context
* is logged in to the target.
*
* Returns:
* 0: success
* <0: error
*/
EXTERN int iscsi_set_header_digest(struct iscsi_context *iscsi,
enum iscsi_header_digest header_digest);
/*
* Specify the username and password to use for chap authentication
*/
EXTERN int iscsi_set_initiator_username_pwd(struct iscsi_context *iscsi,
const char *user,
const char *passwd);
/*
* check if the context is logged in or not
*/
EXTERN int iscsi_is_logged_in(struct iscsi_context *iscsi);
enum scsi_status {
SCSI_STATUS_GOOD = 0,
SCSI_STATUS_CHECK_CONDITION = 2,
SCSI_STATUS_RESERVATION_CONFLICT = 0x18,
SCSI_STATUS_CANCELLED = 0x0f000000,
SCSI_STATUS_ERROR = 0x0f000001
};
/*
* Generic callback for completion of iscsi_*_async().
* command_data depends on status.
*/
typedef void (*iscsi_command_cb)(struct iscsi_context *iscsi, int status,
void *command_data, void *private_data);
/*
* Asynchronous call to connect a TCP connection to the target-host/port
*
* Returns:
* 0 if the call was initiated and a connection will be attempted. Result of
* the connection will be reported through the callback function.
* <0 if there was an error. The callback function will not be invoked.
*
* This command is unique in that the callback can be invoked twice.
*
* Callback parameters :
* status can be either of :
* ISCSI_STATUS_GOOD : Connection was successful. Command_data is NULL.
* In this case the callback will be invoked a
* second time once the connection is torn down.
*
* ISCSI_STATUS_ERROR : Either failed to establish the connection, or
* an already established connection has failed
* with an error.
*
* The callback will NOT be invoked if the session is explicitely torn down
* through a call to iscsi_disconnect() or iscsi_destroy_context().
*/
EXTERN int iscsi_connect_async(struct iscsi_context *iscsi, const char *portal,
iscsi_command_cb cb, void *private_data);
/*
* Synchronous call to connect a TCP connection to the target-host/port
*
* Returns:
* 0 if connected successfully.
* <0 if there was an error.
*
*/
EXTERN int iscsi_connect_sync(struct iscsi_context *iscsi, const char *portal);
/*
* Asynchronous call to connect a lun
* This function will connect to the portal, login, and verify that the lun
* is available.
*
* Returns:
* 0 if the call was initiated and a connection will be attempted. Result
* of the connection will be reported through the callback function.
* <0 if there was an error. The callback function will not be invoked.
*
* This command is unique in that the callback can be invoked twice.
*
* Callback parameters :
* status can be either of :
* ISCSI_STATUS_GOOD : Connection was successful. Command_data is NULL.
* In this case the callback will be invoked a
* second time once the connection is torn down.
*
* ISCSI_STATUS_ERROR : Either failed to establish the connection, or
* an already established connection has failed
* with an error.
*
* The callback will NOT be invoked if the session is explicitely torn down
* through a call to iscsi_disconnect() or iscsi_destroy_context().
*/
EXTERN int iscsi_full_connect_async(struct iscsi_context *iscsi, const char *portal,
int lun, iscsi_command_cb cb, void *private_data);
/*
* Synchronous call to connect a lun
* This function will connect to the portal, login, and verify that the lun
* is available.
*
* Returns:
* 0 if the cconnect was successful.
* <0 if there was an error.
*/
EXTERN int iscsi_full_connect_sync(struct iscsi_context *iscsi, const char *portal,
int lun);
/*
* Disconnect a connection to a target.
* You can not disconnect while being logged in to a target.
*
* Returns:
* 0 disconnect was successful
* <0 error
*/
EXTERN int iscsi_disconnect(struct iscsi_context *iscsi);
/*
* Asynchronous call to perform an ISCSI login.
*
* Returns:
* 0 if the call was initiated and a login will be attempted. Result of the
* login will be reported through the callback function.
* <0 if there was an error. The callback function will not be invoked.
*
* Callback parameters :
* status can be either of :
* ISCSI_STATUS_GOOD : login was successful. Command_data is always
* NULL.
* ISCSI_STATUS_CANCELLED: login was aborted. Command_data is NULL.
* ISCSI_STATUS_ERROR : login failed. Command_data is NULL.
*/
EXTERN int iscsi_login_async(struct iscsi_context *iscsi, iscsi_command_cb cb,
void *private_data);
/*
* Synchronous call to perform an ISCSI login.
*
* Returns:
* 0 if the login was successful
* <0 if there was an error.
*/
EXTERN int iscsi_login_sync(struct iscsi_context *iscsi);
/*
* Asynchronous call to perform an ISCSI logout.
*
* Returns:
* 0 if the call was initiated and a logout will be attempted. Result of the
* logout will be reported through the callback function.
* <0 if there was an error. The callback function will not be invoked.
*
* Callback parameters :
* status can be either of :
* ISCSI_STATUS_GOOD : logout was successful. Command_data is always
* NULL.
* ISCSI_STATUS_CANCELLED: logout was aborted. Command_data is NULL.
*/
EXTERN int iscsi_logout_async(struct iscsi_context *iscsi, iscsi_command_cb cb,
void *private_data);
/*
* Synchronous call to perform an ISCSI logout.
*
* Returns:
* 0 if the logout was successful
* <0 if there was an error.
*/
EXTERN int iscsi_logout_sync(struct iscsi_context *iscsi);
/*
* Asynchronous call to perform an ISCSI discovery.
*
* discoveries can only be done on connected and logged in discovery sessions.
*
* Returns:
* 0 if the call was initiated and a discovery will be attempted. Result
* of the logout will be reported through the callback function.
* <0 if there was an error. The callback function will not be invoked.
*
* Callback parameters :
* status can be either of :
* ISCSI_STATUS_GOOD : Discovery was successful. Command_data is a
* pointer to a iscsi_discovery_address list of
* structures.
* This list of structures is only valid for the
* duration of the callback and all data will be
* freed once the callback returns.
* ISCSI_STATUS_CANCELLED: Discovery was aborted. Command_data is NULL.
*/
EXTERN int iscsi_discovery_async(struct iscsi_context *iscsi, iscsi_command_cb cb,
void *private_data);
struct iscsi_discovery_address {
struct iscsi_discovery_address *next;
const char *target_name;
const char *target_address;
};
/*
* Asynchronous call to perform an ISCSI NOP-OUT call
*
* Returns:
* 0 if the call was initiated and a nop-out will be attempted. Result will
* be reported through the callback function.
* <0 if there was an error. The callback function will not be invoked.
*
* Callback parameters :
* status can be either of :
* ISCSI_STATUS_GOOD : NOP-OUT was successful and the server responded
* with a NOP-IN callback_data is a iscsi_data
* structure containing the data returned from
* the server.
* ISCSI_STATUS_CANCELLED: Discovery was aborted. Command_data is NULL.
*/
EXTERN int iscsi_nop_out_async(struct iscsi_context *iscsi, iscsi_command_cb cb,
unsigned char *data, int len, void *private_data);
struct scsi_task;
enum iscsi_task_mgmt_funcs {
ISCSI_TM_ABORT_TASK = 0x01,
ISCSI_TM_ABORT_TASK_SET = 0x02,
ISCSI_TM_CLEAR_ACA = 0x03,
ISCSI_TM_CLEAR_TASK_SET = 0x04,
ISCSI_TM_LUN_RESET = 0x05,
ISCSI_TM_TARGET_WARM_RESET = 0x06,
ISCSI_TM_TARGET_COLD_RESET = 0x07,
ISCSI_TM_TASK_REASSIGN = 0x08
};
/*
* Asynchronous call for task management
*
* Returns:
* 0 if the call was initiated and the task mgmt function will be invoked.
* the connection will be reported through the callback function.
* <0 if there was an error. The callback function will not be invoked.
*
* Callback parameters :
* status can be either of :
* ISCSI_STATUS_GOOD : Connection was successful. Command_data is a pointer to uint32_t
* containing the response code as per RFC3720/10.6.1
*
* ISCSI_STATUS_ERROR : Error.
*
* The callback will NOT be invoked if the session is explicitely torn down
* through a call to iscsi_disconnect() or iscsi_destroy_context().
*
* abort_task will also cancel the scsi task. The callback for the scsi task will be invoked with
* SCSI_STATUS_CANCELLED
* abort_task_set, lun_reset, target_warn_reset, target_cold_reset will cancel all tasks. The callback for
* all tasks will be invoked with SCSI_STATUS_CANCELLED
*/
EXTERN int
iscsi_task_mgmt_async(struct iscsi_context *iscsi,
int lun, enum iscsi_task_mgmt_funcs function,
uint32_t ritt, uint32_t rcmdscn,
iscsi_command_cb cb, void *private_data);
EXTERN int
iscsi_task_mgmt_abort_task_async(struct iscsi_context *iscsi,
struct scsi_task *task,
iscsi_command_cb cb, void *private_data);
EXTERN int
iscsi_task_mgmt_abort_task_set_async(struct iscsi_context *iscsi,
uint32_t lun,
iscsi_command_cb cb, void *private_data);
EXTERN int
iscsi_task_mgmt_lun_reset_async(struct iscsi_context *iscsi,
uint32_t lun,
iscsi_command_cb cb, void *private_data);
EXTERN int
iscsi_task_mgmt_target_warm_reset_async(struct iscsi_context *iscsi,
iscsi_command_cb cb, void *private_data);
EXTERN int
iscsi_task_mgmt_target_cold_reset_async(struct iscsi_context *iscsi,
iscsi_command_cb cb, void *private_data);
/* These are the possible status values for the callbacks for scsi commands.
* The content of command_data depends on the status type.
*
* status :
* ISCSI_STATUS_GOOD the scsi command completed successfullt on the target.
* If this scsi command returns DATA-IN, that data is stored in an scsi_task
* structure returned in the command_data parameter. This buffer will be
* automatically freed once the callback returns.
*
* ISCSI_STATUS_CHECK_CONDITION the scsi command failed with a scsi sense.
* Command_data contains a struct scsi_task. When the callback returns,
* this buffer will automatically become freed.
*
* ISCSI_STATUS_CANCELLED the scsi command was aborted. Command_data is
* NULL.
*
* ISCSI_STATUS_ERROR the command failed. Command_data is NULL.
*/
struct iscsi_data {
int size;
unsigned char *data;
};
/*
* These functions will set the ISID type and value.
* By default, contexts will automatically be assigned a 'random'
* type and value on creation, but this can be overridden
* by an appplication using these functions.
*
* Setting the ISID can only be done before loggin in to the target.
*/
EXTERN int
iscsi_set_isid_oui(struct iscsi_context *iscsi, uint32_t oui, uint32_t qualifier);
EXTERN int
iscsi_set_isid_en(struct iscsi_context *iscsi, uint32_t en, uint32_t qualifier);
EXTERN int
iscsi_set_isid_random(struct iscsi_context *iscsi, uint32_t rnd, uint32_t qualifier);
EXTERN int
iscsi_set_isid_reserved(struct iscsi_context *iscsi);
/*
* The scsi commands use/return a scsi_task structure when invoked
* and also through the callback.
*
* You must release this structure when you are finished with the task
* by calling scsi_free_scsi_task().
* Most of the time this means you should call this function before returning
* from the callback.
*/
EXTERN int iscsi_scsi_command_async(struct iscsi_context *iscsi, int lun,
struct scsi_task *task, iscsi_command_cb cb,
struct iscsi_data *data, void *private_data);
/*
* Async commands for SCSI
*
* These async functions return a scsi_task structure, or NULL if the command failed.
* This structure can be used by task management functions to abort the task or a whole task set.
*/
EXTERN struct scsi_task *
iscsi_reportluns_task(struct iscsi_context *iscsi, int report_type,
int alloc_len, iscsi_command_cb cb,
void *private_data);
EXTERN struct scsi_task *
iscsi_testunitready_task(struct iscsi_context *iscsi, int lun,
iscsi_command_cb cb, void *private_data);
EXTERN struct scsi_task *
iscsi_inquiry_task(struct iscsi_context *iscsi, int lun, int evpd,
int page_code, int maxsize, iscsi_command_cb cb,
void *private_data);
EXTERN struct scsi_task *
iscsi_readcapacity10_task(struct iscsi_context *iscsi, int lun, int lba,
int pmi, iscsi_command_cb cb,
void *private_data);
EXTERN struct scsi_task *
iscsi_readcapacity16_task(struct iscsi_context *iscsi, int lun,
iscsi_command_cb cb,
void *private_data);
EXTERN struct scsi_task *
iscsi_synchronizecache10_task(struct iscsi_context *iscsi, int lun,
int lba, int num_blocks, int syncnv,
int immed, iscsi_command_cb cb,
void *private_data);
EXTERN struct scsi_task *
iscsi_prefetch10_task(struct iscsi_context *iscsi, int lun,
uint32_t lba, int num_blocks,
int immed, int group,
iscsi_command_cb cb, void *private_data);
EXTERN struct scsi_task *
iscsi_prefetch16_task(struct iscsi_context *iscsi, int lun,
uint64_t lba, int num_blocks,
int immed, int group,
iscsi_command_cb cb, void *private_data);
EXTERN struct scsi_task *
iscsi_read6_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
uint32_t datalen, int blocksize, iscsi_command_cb cb,
void *private_data);
EXTERN struct scsi_task *
iscsi_read10_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
uint32_t datalen, int blocksize, iscsi_command_cb cb,
void *private_data);
EXTERN struct scsi_task *
iscsi_write10_task(struct iscsi_context *iscsi, int lun,
unsigned char *data, uint32_t datalen, uint32_t lba, int fua,
int fua_nv, int blocksize, iscsi_command_cb cb,
void *private_data);
EXTERN struct scsi_task *
iscsi_read12_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
uint32_t datalen, int blocksize,
int rdprotect, int dpo, int fua, int fua_nv, int group_number,
iscsi_command_cb cb, void *private_data);
EXTERN struct scsi_task *
iscsi_write12_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
unsigned char *data, uint32_t datalen, int blocksize,
int wrprotect, int dpo, int fua, int fua_nv, int group_number,
iscsi_command_cb cb, void *private_data);
EXTERN struct scsi_task *
iscsi_read16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
uint32_t datalen, int blocksize,
int rdprotect, int dpo, int fua, int fua_nv, int group_number,
iscsi_command_cb cb, void *private_data);
EXTERN struct scsi_task *
iscsi_write16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
unsigned char *data, uint32_t datalen, int blocksize,
int wrprotect, int dpo, int fua, int fua_nv, int group_number,
iscsi_command_cb cb, void *private_data);
EXTERN struct scsi_task *
iscsi_verify10_task(struct iscsi_context *iscsi, int lun,
unsigned char *data, uint32_t datalen, uint32_t lba,
int vprotect, int dpo, int bytchk,
int blocksize, iscsi_command_cb cb,
void *private_data);
EXTERN struct scsi_task *
iscsi_writesame10_task(struct iscsi_context *iscsi, int lun,
unsigned char *data, uint32_t datalen,
uint32_t lba, uint16_t num_blocks,
int anchor, int unmap, int pbdata, int lbdata,
int wrprotect, int group,
iscsi_command_cb cb, void *private_data);
EXTERN struct scsi_task *
iscsi_writesame16_task(struct iscsi_context *iscsi, int lun,
unsigned char *data, uint32_t datalen,
uint64_t lba, uint32_t num_blocks,
int anchor, int unmap, int pbdata, int lbdata,
int wrprotect, int group,
iscsi_command_cb cb, void *private_data);
EXTERN struct scsi_task *
iscsi_modesense6_task(struct iscsi_context *iscsi, int lun, int dbd,
int pc, int page_code, int sub_page_code,
unsigned char alloc_len, iscsi_command_cb cb,
void *private_data);
struct unmap_list {
uint64_t lba;
uint32_t num;
};
EXTERN struct scsi_task *
iscsi_unmap_task(struct iscsi_context *iscsi, int lun, int anchor, int group,
struct unmap_list *list, int list_len,
iscsi_command_cb cb, void *private_data);
/*
* Sync commands for SCSI
*/
EXTERN struct scsi_task *
iscsi_scsi_command_sync(struct iscsi_context *iscsi, int lun,
struct scsi_task *task, struct iscsi_data *data);
EXTERN struct scsi_task *
iscsi_reportluns_sync(struct iscsi_context *iscsi, int report_type,
int alloc_len);
EXTERN struct scsi_task *
iscsi_testunitready_sync(struct iscsi_context *iscsi, int lun);
EXTERN struct scsi_task *
iscsi_inquiry_sync(struct iscsi_context *iscsi, int lun, int evpd,
int page_code, int maxsize);
EXTERN struct scsi_task *
iscsi_read6_sync(struct iscsi_context *iscsi, int lun, uint32_t lba,
uint32_t datalen, int blocksize);
EXTERN struct scsi_task *
iscsi_read10_sync(struct iscsi_context *iscsi, int lun, uint32_t lba,
uint32_t datalen, int blocksize);
EXTERN struct scsi_task *
iscsi_write10_sync(struct iscsi_context *iscsi, int lun,
unsigned char *data, uint32_t datalen, uint32_t lba, int fua,
int fua_nv, int blocksize);
EXTERN struct scsi_task *
iscsi_read12_sync(struct iscsi_context *iscsi, int lun, uint32_t lba,
uint32_t datalen, int blocksize,
int rdprotect, int dpo, int fua, int fua_nv, int group_number);
EXTERN struct scsi_task *
iscsi_write12_sync(struct iscsi_context *iscsi, int lun, uint32_t lba,
unsigned char *data, uint32_t datalen, int blocksize,
int wrprotect, int dpo, int fua, int fua_nv, int group_number);
EXTERN struct scsi_task *
iscsi_read16_sync(struct iscsi_context *iscsi, int lun, uint64_t lba,
uint32_t datalen, int blocksize,
int rdprotect, int dpo, int fua, int fua_nv, int group_number);
EXTERN struct scsi_task *
iscsi_write16_sync(struct iscsi_context *iscsi, int lun, uint64_t lba,
unsigned char *data, uint32_t datalen, int blocksize,
int wrprotect, int dpo, int fua, int fua_nv, int group_number);
EXTERN struct scsi_task *
iscsi_readcapacity10_sync(struct iscsi_context *iscsi, int lun, int lba,
int pmi);
EXTERN struct scsi_task *
iscsi_readcapacity16_sync(struct iscsi_context *iscsi, int lun);
EXTERN struct scsi_task *
iscsi_synchronizecache10_sync(struct iscsi_context *iscsi, int lun, int lba,
int num_blocks, int syncnv, int immed);
EXTERN struct scsi_task *
iscsi_prefetch10_sync(struct iscsi_context *iscsi, int lun, uint32_t lba,
int num_blocks, int immed, int group);
EXTERN struct scsi_task *
iscsi_prefetch16_sync(struct iscsi_context *iscsi, int lun, uint64_t lba,
int num_blocks, int immed, int group);
EXTERN struct scsi_task *
iscsi_verify10_sync(struct iscsi_context *iscsi, int lun,
unsigned char *data, uint32_t datalen, uint32_t lba,
int vprotect, int dpo, int bytchk,
int blocksize);
EXTERN struct scsi_task *
iscsi_writesame10_sync(struct iscsi_context *iscsi, int lun,
unsigned char *data, uint32_t datalen,
uint32_t lba, uint16_t num_blocks,
int anchor, int unmap, int pbdata, int lbdata,
int wrprotect, int group);
EXTERN struct scsi_task *
iscsi_writesame16_sync(struct iscsi_context *iscsi, int lun,
unsigned char *data, uint32_t datalen,
uint64_t lba, uint32_t num_blocks,
int anchor, int unmap, int pbdata, int lbdata,
int wrprotect, int group);
EXTERN struct scsi_task *
iscsi_unmap_sync(struct iscsi_context *iscsi, int lun, int anchor, int group,
struct unmap_list *list, int list_len);
/*
* This function is used when the application wants to specify its own buffers to read the data
* from the DATA-IN PDUs into.
* The main use is for SCSI read operations to have them write directly into the application buffers to
* avoid the two copies that would occur otherwise.
* First copy from the individual DATA-IN blobs to linearize the buffer and the second in the callback
* to copy the data from the linearized buffer into the application buffer.
*
* This also supports reading into a vector of buffers by calling this function multiple times.
* The individual buffers will be filled in the same order as they were created.
*
* Example:
* task = iscsi_read10_task( ( 2 512byte blocks into two buffers)
* scsi_task_add_data_in_buffer(task, first_buffer, 512
* scsi_task_add_data_in_buffer(task, second_buffer, 512
*
*
* If you use this function you can not use task->datain in the callback.
* task->datain.size will be 0 and
* task->datain.data will be NULL
*/
EXTERN int scsi_task_add_data_in_buffer(struct scsi_task *task, int len, unsigned char *buf);
/*
* This function is used when you want to cancel a scsi task.
* The callback for the task will immediately be invoked with SCSI_STATUS_CANCELLED.
* The cancellation is only local in libiscsi. If the task is already in-flight
* this call will not cancel the task at the target.
* To cancel the task also a the target you need to call the task management functions.
*/
EXTERN int
iscsi_scsi_task_cancel(struct iscsi_context *iscsi,
struct scsi_task *task);
/*
* This function is used when you want to cancel all scsi tasks.
* The callback for the tasks will immediately be invoked with SCSI_STATUS_CANCELLED.
* The cancellation is only local in libiscsi. If the tasks are already in-flight
* this call will not cancel the tasks at the target.
* To cancel the tasks also a the target you need to call the task management functions.
*/
EXTERN void
iscsi_scsi_cancel_all_tasks(struct iscsi_context *iscsi);
#endif /* __iscsi_h__ */
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