8eba104b73
after move the spdk_iscsi_conn_handle_queued_tasks() into spdk_iscsi_conn_execute(), we should handle the situation when the lun has been removed and then try to access spdk_iscsi_conn_handle_queued_tasks(). Change-Id: I9ac7a5203b49274347c9ee9fbf19558ca87557ed Signed-off-by: Cunyin Chang <cunyin.chang@intel.com> Reviewed-on: https://review.gerrithub.io/371813 Reviewed-by: Ben Walker <benjamin.walker@intel.com> Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
269 lines
9.0 KiB
C
269 lines
9.0 KiB
C
/*-
|
|
* BSD LICENSE
|
|
*
|
|
* Copyright (c) Intel Corporation.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * 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.
|
|
* * Neither the name of Intel Corporation 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
|
|
* OWNER 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.
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* SCSI to bdev translation layer
|
|
*/
|
|
|
|
#ifndef SPDK_SCSI_H
|
|
#define SPDK_SCSI_H
|
|
|
|
#include "spdk/stdinc.h"
|
|
|
|
#include "spdk/queue.h"
|
|
|
|
/* Defines for SPDK tracing framework */
|
|
#define OWNER_SCSI_DEV 0x10
|
|
#define OBJECT_SCSI_TASK 0x10
|
|
#define TRACE_GROUP_SCSI 0x2
|
|
#define TRACE_SCSI_TASK_DONE SPDK_TPOINT_ID(TRACE_GROUP_SCSI, 0x0)
|
|
#define TRACE_SCSI_TASK_START SPDK_TPOINT_ID(TRACE_GROUP_SCSI, 0x1)
|
|
|
|
#define SPDK_SCSI_MAX_DEVS 1024
|
|
#define SPDK_SCSI_DEV_MAX_LUN 64
|
|
#define SPDK_SCSI_DEV_MAX_PORTS 4
|
|
#define SPDK_SCSI_DEV_MAX_NAME 255
|
|
|
|
#define SPDK_SCSI_PORT_MAX_NAME_LENGTH 255
|
|
|
|
#define SPDK_SCSI_LUN_MAX_NAME_LENGTH 16
|
|
|
|
enum spdk_scsi_data_dir {
|
|
SPDK_SCSI_DIR_NONE = 0,
|
|
SPDK_SCSI_DIR_TO_DEV = 1,
|
|
SPDK_SCSI_DIR_FROM_DEV = 2,
|
|
};
|
|
|
|
enum spdk_scsi_task_func {
|
|
SPDK_SCSI_TASK_FUNC_ABORT_TASK = 0,
|
|
SPDK_SCSI_TASK_FUNC_ABORT_TASK_SET,
|
|
SPDK_SCSI_TASK_FUNC_CLEAR_TASK_SET,
|
|
SPDK_SCSI_TASK_FUNC_LUN_RESET,
|
|
};
|
|
|
|
/*
|
|
* SAM does not define the value for these service responses. Each transport
|
|
* (i.e. SAS, FC, iSCSI) will map these value to transport-specific codes,
|
|
* and may add their own.
|
|
*/
|
|
enum spdk_scsi_task_mgmt_resp {
|
|
SPDK_SCSI_TASK_MGMT_RESP_COMPLETE,
|
|
SPDK_SCSI_TASK_MGMT_RESP_SUCCESS,
|
|
SPDK_SCSI_TASK_MGMT_RESP_REJECT,
|
|
SPDK_SCSI_TASK_MGMT_RESP_INVALID_LUN,
|
|
SPDK_SCSI_TASK_MGMT_RESP_TARGET_FAILURE,
|
|
SPDK_SCSI_TASK_MGMT_RESP_REJECT_FUNC_NOT_SUPPORTED
|
|
};
|
|
|
|
struct spdk_scsi_task;
|
|
typedef void (*spdk_scsi_task_cpl)(struct spdk_scsi_task *task);
|
|
typedef void (*spdk_scsi_task_free)(struct spdk_scsi_task *task);
|
|
|
|
struct spdk_scsi_task {
|
|
uint8_t status;
|
|
uint8_t function; /* task mgmt function */
|
|
uint8_t response; /* task mgmt response */
|
|
/**
|
|
* Record the lun id just in case the lun is invalid,
|
|
* which will happen when hot remove the lun.
|
|
*/
|
|
int lun_id;
|
|
struct spdk_scsi_lun *lun;
|
|
struct spdk_bdev_desc *desc;
|
|
struct spdk_io_channel *ch;
|
|
struct spdk_scsi_port *target_port;
|
|
struct spdk_scsi_port *initiator_port;
|
|
|
|
spdk_scsi_task_cpl cpl_fn;
|
|
spdk_scsi_task_free free_fn;
|
|
|
|
uint32_t ref;
|
|
uint32_t transfer_len;
|
|
uint32_t dxfer_dir;
|
|
uint32_t length;
|
|
|
|
/**
|
|
* Amount of data actually transferred. Can be less than requested
|
|
* transfer_len - i.e. SCSI INQUIRY.
|
|
*/
|
|
uint32_t data_transferred;
|
|
|
|
uint64_t offset;
|
|
struct spdk_scsi_task *parent;
|
|
|
|
uint8_t *cdb;
|
|
|
|
/**
|
|
* \internal
|
|
* Size of internal buffer or zero when iov.iov_base is not internally managed.
|
|
*/
|
|
uint32_t alloc_len;
|
|
/**
|
|
* \internal
|
|
* iov is internal buffer. Use iovs to access elements of IO.
|
|
*/
|
|
struct iovec iov;
|
|
struct iovec *iovs;
|
|
uint16_t iovcnt;
|
|
|
|
uint8_t sense_data[32];
|
|
size_t sense_data_len;
|
|
|
|
void *bdev_io;
|
|
|
|
TAILQ_ENTRY(spdk_scsi_task) scsi_link;
|
|
|
|
uint32_t abort_id;
|
|
};
|
|
|
|
struct spdk_scsi_port;
|
|
|
|
struct spdk_scsi_dev;
|
|
|
|
/**
|
|
* \brief Represents a SCSI LUN.
|
|
*
|
|
* LUN modules will implement the function pointers specifically for the LUN
|
|
* type. For example, NVMe LUNs will implement scsi_execute to translate
|
|
* the SCSI task to an NVMe command and post it to the NVMe controller.
|
|
* malloc LUNs will implement scsi_execute to translate the SCSI task and
|
|
* copy the task's data into or out of the allocated memory buffer.
|
|
*/
|
|
struct spdk_scsi_lun;
|
|
|
|
int spdk_scsi_init(void);
|
|
|
|
int spdk_scsi_fini(void);
|
|
|
|
int spdk_scsi_lun_get_id(const struct spdk_scsi_lun *lun);
|
|
const char *spdk_scsi_lun_get_name(const struct spdk_scsi_lun *lun);
|
|
const struct spdk_scsi_dev *spdk_scsi_lun_get_dev(const struct spdk_scsi_lun *lun);
|
|
|
|
const char *spdk_scsi_dev_get_name(const struct spdk_scsi_dev *dev);
|
|
int spdk_scsi_dev_get_id(const struct spdk_scsi_dev *dev);
|
|
struct spdk_scsi_lun *spdk_scsi_dev_get_lun(struct spdk_scsi_dev *dev, int lun_id);
|
|
bool spdk_scsi_dev_has_pending_tasks(const struct spdk_scsi_dev *dev);
|
|
void spdk_scsi_dev_destruct(struct spdk_scsi_dev *dev);
|
|
void spdk_scsi_dev_queue_mgmt_task(struct spdk_scsi_dev *dev, struct spdk_scsi_task *task,
|
|
enum spdk_scsi_task_func func);
|
|
void spdk_scsi_dev_queue_task(struct spdk_scsi_dev *dev, struct spdk_scsi_task *task);
|
|
int spdk_scsi_dev_add_port(struct spdk_scsi_dev *dev, uint64_t id, const char *name);
|
|
struct spdk_scsi_port *spdk_scsi_dev_find_port_by_id(struct spdk_scsi_dev *dev, uint64_t id);
|
|
void spdk_scsi_dev_print(struct spdk_scsi_dev *dev);
|
|
int spdk_scsi_dev_allocate_io_channels(struct spdk_scsi_dev *dev);
|
|
void spdk_scsi_dev_free_io_channels(struct spdk_scsi_dev *dev);
|
|
|
|
/**
|
|
* \brief Constructs a SCSI device object using the given parameters.
|
|
*
|
|
* \param name Name for the SCSI device.
|
|
* \param queue_depth Queue depth for the SCSI device. This queue depth is
|
|
* a combined queue depth for all LUNs in the device.
|
|
* \param lun_list List of LUN objects for the SCSI device. Caller is
|
|
* responsible for managing the memory containing this list.
|
|
* \param lun_id_list List of LUN IDs for the LUN in this SCSI device. Caller is
|
|
* responsible for managing the memory containing this list.
|
|
* lun_id_list[x] is the LUN ID for lun_list[x].
|
|
* \param num_luns Number of entries in lun_list and lun_id_list.
|
|
* \param hotremove_cb Callback to lun hotremoval. Will be called
|
|
* once hotremove is first triggered.
|
|
* \param hotremove_ctx Additional argument to hotremove_cb
|
|
* \return The constructed spdk_scsi_dev object.
|
|
*/
|
|
struct spdk_scsi_dev *spdk_scsi_dev_construct(const char *name,
|
|
char *lun_name_list[],
|
|
int *lun_id_list,
|
|
int num_luns,
|
|
uint8_t protocol_id,
|
|
void (*hotremove_cb)(const struct spdk_scsi_lun *, void *),
|
|
void *hotremove_ctx);
|
|
|
|
void spdk_scsi_dev_delete_lun(struct spdk_scsi_dev *dev, struct spdk_scsi_lun *lun);
|
|
|
|
|
|
struct spdk_scsi_port *spdk_scsi_port_create(uint64_t id, uint16_t index, const char *name);
|
|
void spdk_scsi_port_free(struct spdk_scsi_port **pport);
|
|
const char *spdk_scsi_port_get_name(const struct spdk_scsi_port *port);
|
|
|
|
|
|
void spdk_scsi_task_construct(struct spdk_scsi_task *task,
|
|
spdk_scsi_task_cpl cpl_fn,
|
|
spdk_scsi_task_free free_fn,
|
|
struct spdk_scsi_task *parent);
|
|
void spdk_scsi_task_put(struct spdk_scsi_task *task);
|
|
|
|
void spdk_scsi_task_free_data(struct spdk_scsi_task *task);
|
|
/**
|
|
* Set internal buffer to given one. Caller is owner of that buffer.
|
|
*
|
|
* \param task Task struct
|
|
* \param data Pointer to buffer
|
|
* \param len Buffer length
|
|
*/
|
|
void spdk_scsi_task_set_data(struct spdk_scsi_task *task, void *data, uint32_t len);
|
|
|
|
/**
|
|
* Allocate internal buffer of requested size. Caller is not owner of
|
|
* returned buffer and must not free it. Caller is permitted to call
|
|
* spdk_scsi_task_free_data() to free internal buffer if it is not required
|
|
* anymore, but must assert that task is done and not used by library.
|
|
*
|
|
* Allocated buffer is stored in iov field of task object.
|
|
*
|
|
* \param task Task struct
|
|
* \param alloc_len Size of allocated buffer.
|
|
* \return Pointer to buffer or NULL on error.
|
|
*/
|
|
void *spdk_scsi_task_alloc_data(struct spdk_scsi_task *task, uint32_t alloc_len);
|
|
|
|
int spdk_scsi_task_scatter_data(struct spdk_scsi_task *task, const void *src, size_t len);
|
|
void *spdk_scsi_task_gather_data(struct spdk_scsi_task *task, int *len);
|
|
void spdk_scsi_task_build_sense_data(struct spdk_scsi_task *task, int sk, int asc,
|
|
int ascq);
|
|
void spdk_scsi_task_set_status(struct spdk_scsi_task *task, int sc, int sk, int asc,
|
|
int ascq);
|
|
void spdk_scsi_task_process_null_lun(struct spdk_scsi_task *task);
|
|
|
|
static inline struct spdk_scsi_task *
|
|
spdk_scsi_task_get_primary(struct spdk_scsi_task *task)
|
|
{
|
|
if (task->parent) {
|
|
return task->parent;
|
|
} else {
|
|
return task;
|
|
}
|
|
}
|
|
|
|
#endif /* SPDK_SCSI_H */
|