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[SCSI] zfcp: remove access control tables interface

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This patch removes an interface that was used to manage access control
tables within the HBA. The patch consequently removes the handling
for conditions related to those access control tables, too.

That initiator-based access control feature was only needed until the
introduction of NPIV and was withdrawn with z10 years ago.
It's time to cleanup the corresponding device driver code.

Signed-off-by: Martin Peschke <mpeschke@linux.vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Martin Peschke 2013-04-26 16:13:54 +02:00 committed by James Bottomley
parent bf3ea3aec5
commit 663e0890e3
10 changed files with 15 additions and 636 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/s390/scsi/Makefile
View File

@ -2,7 +2,7 @@
# Makefile for the S/390 specific device drivers
#
zfcp-objs := zfcp_aux.o zfcp_ccw.o zfcp_cfdc.o zfcp_dbf.o zfcp_erp.o \
zfcp-objs := zfcp_aux.o zfcp_ccw.o zfcp_dbf.o zfcp_erp.o \
zfcp_fc.o zfcp_fsf.o zfcp_qdio.o zfcp_scsi.o zfcp_sysfs.o \
zfcp_unit.o

10
drivers/s390/scsi/zfcp_aux.c
View File

@ -140,13 +140,6 @@ static int __init zfcp_module_init(void)
scsi_transport_reserve_device(zfcp_scsi_transport_template,
sizeof(struct zfcp_scsi_dev));
retval = misc_register(&zfcp_cfdc_misc);
if (retval) {
pr_err("Registering the misc device zfcp_cfdc failed\n");
goto out_misc;
}
retval = ccw_driver_register(&zfcp_ccw_driver);
if (retval) {
pr_err("The zfcp device driver could not register with "
@ -159,8 +152,6 @@ static int __init zfcp_module_init(void)
return 0;
out_ccw_register:
misc_deregister(&zfcp_cfdc_misc);
out_misc:
fc_release_transport(zfcp_scsi_transport_template);
out_transport:
kmem_cache_destroy(zfcp_fc_req_cache);
@ -175,7 +166,6 @@ module_init(zfcp_module_init);
static void __exit zfcp_module_exit(void)
{
ccw_driver_unregister(&zfcp_ccw_driver);
misc_deregister(&zfcp_cfdc_misc);
fc_release_transport(zfcp_scsi_transport_template);
kmem_cache_destroy(zfcp_fc_req_cache);
kmem_cache_destroy(zfcp_fsf_qtcb_cache);

9
drivers/s390/scsi/zfcp_ccw.c
View File

@ -71,15 +71,6 @@ static struct ccw_device_id zfcp_ccw_device_id[] = {
};
MODULE_DEVICE_TABLE(ccw, zfcp_ccw_device_id);
/**
* zfcp_ccw_priv_sch - check if subchannel is privileged
* @adapter: Adapter/Subchannel to check
*/
int zfcp_ccw_priv_sch(struct zfcp_adapter *adapter)
{
return adapter->ccw_device->id.dev_model == ZFCP_MODEL_PRIV;
}
/**
* zfcp_ccw_probe - probe function of zfcp driver
* @cdev: pointer to belonging ccw device

448
drivers/s390/scsi/zfcp_cfdc.c
View File

@ -1,448 +0,0 @@
/*
* zfcp device driver
*
* Userspace interface for accessing the
* Access Control Lists / Control File Data Channel;
* handling of response code and states for ports and LUNs.
*
* Copyright IBM Corp. 2008, 2010
*/
#define KMSG_COMPONENT "zfcp"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/compat.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/miscdevice.h>
#include <asm/compat.h>
#include <asm/ccwdev.h>
#include "zfcp_def.h"
#include "zfcp_ext.h"
#include "zfcp_fsf.h"
#define ZFCP_CFDC_CMND_DOWNLOAD_NORMAL 0x00010001
#define ZFCP_CFDC_CMND_DOWNLOAD_FORCE 0x00010101
#define ZFCP_CFDC_CMND_FULL_ACCESS 0x00000201
#define ZFCP_CFDC_CMND_RESTRICTED_ACCESS 0x00000401
#define ZFCP_CFDC_CMND_UPLOAD 0x00010002
#define ZFCP_CFDC_DOWNLOAD 0x00000001
#define ZFCP_CFDC_UPLOAD 0x00000002
#define ZFCP_CFDC_WITH_CONTROL_FILE 0x00010000
#define ZFCP_CFDC_IOC_MAGIC 0xDD
#define ZFCP_CFDC_IOC \
_IOWR(ZFCP_CFDC_IOC_MAGIC, 0, struct zfcp_cfdc_data)
/**
* struct zfcp_cfdc_data - data for ioctl cfdc interface
* @signature: request signature
* @devno: FCP adapter device number
* @command: command code
* @fsf_status: returns status of FSF command to userspace
* @fsf_status_qual: returned to userspace
* @payloads: access conflicts list
* @control_file: access control table
*/
struct zfcp_cfdc_data {
u32 signature;
u32 devno;
u32 command;
u32 fsf_status;
u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
u8 payloads[256];
u8 control_file[0];
};
static int zfcp_cfdc_copy_from_user(struct scatterlist *sg,
void __user *user_buffer)
{
unsigned int length;
unsigned int size = ZFCP_CFDC_MAX_SIZE;
while (size) {
length = min((unsigned int)size, sg->length);
if (copy_from_user(sg_virt(sg++), user_buffer, length))
return -EFAULT;
user_buffer += length;
size -= length;
}
return 0;
}
static int zfcp_cfdc_copy_to_user(void __user *user_buffer,
struct scatterlist *sg)
{
unsigned int length;
unsigned int size = ZFCP_CFDC_MAX_SIZE;
while (size) {
length = min((unsigned int) size, sg->length);
if (copy_to_user(user_buffer, sg_virt(sg++), length))
return -EFAULT;
user_buffer += length;
size -= length;
}
return 0;
}
static struct zfcp_adapter *zfcp_cfdc_get_adapter(u32 devno)
{
char busid[9];
struct ccw_device *cdev;
struct zfcp_adapter *adapter;
snprintf(busid, sizeof(busid), "0.0.%04x", devno);
cdev = get_ccwdev_by_busid(&zfcp_ccw_driver, busid);
if (!cdev)
return NULL;
adapter = zfcp_ccw_adapter_by_cdev(cdev);
put_device(&cdev->dev);
return adapter;
}
static int zfcp_cfdc_set_fsf(struct zfcp_fsf_cfdc *fsf_cfdc, int command)
{
switch (command) {
case ZFCP_CFDC_CMND_DOWNLOAD_NORMAL:
fsf_cfdc->command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
fsf_cfdc->option = FSF_CFDC_OPTION_NORMAL_MODE;
break;
case ZFCP_CFDC_CMND_DOWNLOAD_FORCE:
fsf_cfdc->command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
fsf_cfdc->option = FSF_CFDC_OPTION_FORCE;
break;
case ZFCP_CFDC_CMND_FULL_ACCESS:
fsf_cfdc->command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
fsf_cfdc->option = FSF_CFDC_OPTION_FULL_ACCESS;
break;
case ZFCP_CFDC_CMND_RESTRICTED_ACCESS:
fsf_cfdc->command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
fsf_cfdc->option = FSF_CFDC_OPTION_RESTRICTED_ACCESS;
break;
case ZFCP_CFDC_CMND_UPLOAD:
fsf_cfdc->command = FSF_QTCB_UPLOAD_CONTROL_FILE;
fsf_cfdc->option = 0;
break;
default:
return -EINVAL;
}
return 0;
}
static int zfcp_cfdc_sg_setup(int command, struct scatterlist *sg,
u8 __user *control_file)
{
int retval;
retval = zfcp_sg_setup_table(sg, ZFCP_CFDC_PAGES);
if (retval)
return retval;
sg[ZFCP_CFDC_PAGES - 1].length = ZFCP_CFDC_MAX_SIZE % PAGE_SIZE;
if (command & ZFCP_CFDC_WITH_CONTROL_FILE &&
command & ZFCP_CFDC_DOWNLOAD) {
retval = zfcp_cfdc_copy_from_user(sg, control_file);
if (retval) {
zfcp_sg_free_table(sg, ZFCP_CFDC_PAGES);
return -EFAULT;
}
}
return 0;
}
static void zfcp_cfdc_req_to_sense(struct zfcp_cfdc_data *data,
struct zfcp_fsf_req *req)
{
data->fsf_status = req->qtcb->header.fsf_status;
memcpy(&data->fsf_status_qual, &req->qtcb->header.fsf_status_qual,
sizeof(union fsf_status_qual));
memcpy(&data->payloads, &req->qtcb->bottom.support.els,
sizeof(req->qtcb->bottom.support.els));
}
static long zfcp_cfdc_dev_ioctl(struct file *file, unsigned int command,
unsigned long arg)
{
struct zfcp_cfdc_data *data;
struct zfcp_cfdc_data __user *data_user;
struct zfcp_adapter *adapter;
struct zfcp_fsf_req *req;
struct zfcp_fsf_cfdc *fsf_cfdc;
int retval;
if (command != ZFCP_CFDC_IOC)
return -ENOTTY;
if (is_compat_task())
data_user = compat_ptr(arg);
else
data_user = (void __user *)arg;
if (!data_user)
return -EINVAL;
fsf_cfdc = kmalloc(sizeof(struct zfcp_fsf_cfdc), GFP_KERNEL);
if (!fsf_cfdc)
return -ENOMEM;
data = memdup_user(data_user, sizeof(*data_user));
if (IS_ERR(data)) {
retval = PTR_ERR(data);
goto no_mem_sense;
}
if (data->signature != 0xCFDCACDF) {
retval = -EINVAL;
goto free_buffer;
}
retval = zfcp_cfdc_set_fsf(fsf_cfdc, data->command);
adapter = zfcp_cfdc_get_adapter(data->devno);
if (!adapter) {
retval = -ENXIO;
goto free_buffer;
}
retval = zfcp_cfdc_sg_setup(data->command, fsf_cfdc->sg,
data_user->control_file);
if (retval)
goto adapter_put;
req = zfcp_fsf_control_file(adapter, fsf_cfdc);
if (IS_ERR(req)) {
retval = PTR_ERR(req);
goto free_sg;
}
if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
retval = -ENXIO;
goto free_fsf;
}
zfcp_cfdc_req_to_sense(data, req);
retval = copy_to_user(data_user, data, sizeof(*data_user));
if (retval) {
retval = -EFAULT;
goto free_fsf;
}
if (data->command & ZFCP_CFDC_UPLOAD)
retval = zfcp_cfdc_copy_to_user(&data_user->control_file,
fsf_cfdc->sg);
free_fsf:
zfcp_fsf_req_free(req);
free_sg:
zfcp_sg_free_table(fsf_cfdc->sg, ZFCP_CFDC_PAGES);
adapter_put:
zfcp_ccw_adapter_put(adapter);
free_buffer:
kfree(data);
no_mem_sense:
kfree(fsf_cfdc);
return retval;
}
static const struct file_operations zfcp_cfdc_fops = {
.owner = THIS_MODULE,
.open = nonseekable_open,
.unlocked_ioctl = zfcp_cfdc_dev_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = zfcp_cfdc_dev_ioctl,
#endif
.llseek = no_llseek,
};
struct miscdevice zfcp_cfdc_misc = {
.minor = MISC_DYNAMIC_MINOR,
.name = "zfcp_cfdc",
.fops = &zfcp_cfdc_fops,
};
/**
* zfcp_cfdc_adapter_access_changed - Process change in adapter ACT
* @adapter: Adapter where the Access Control Table (ACT) changed
*
* After a change in the adapter ACT, check if access to any
* previously denied resources is now possible.
*/
void zfcp_cfdc_adapter_access_changed(struct zfcp_adapter *adapter)
{
unsigned long flags;
struct zfcp_port *port;
struct scsi_device *sdev;
struct zfcp_scsi_dev *zfcp_sdev;
int status;
if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
return;
read_lock_irqsave(&adapter->port_list_lock, flags);
list_for_each_entry(port, &adapter->port_list, list) {
status = atomic_read(&port->status);
if ((status & ZFCP_STATUS_COMMON_ACCESS_DENIED) ||
(status & ZFCP_STATUS_COMMON_ACCESS_BOXED))
zfcp_erp_port_reopen(port,
ZFCP_STATUS_COMMON_ERP_FAILED,
"cfaac_1");
}
read_unlock_irqrestore(&adapter->port_list_lock, flags);
shost_for_each_device(sdev, adapter->scsi_host) {
zfcp_sdev = sdev_to_zfcp(sdev);
status = atomic_read(&zfcp_sdev->status);
if ((status & ZFCP_STATUS_COMMON_ACCESS_DENIED) ||
(status & ZFCP_STATUS_COMMON_ACCESS_BOXED))
zfcp_erp_lun_reopen(sdev,
ZFCP_STATUS_COMMON_ERP_FAILED,
"cfaac_2");
}
}
static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table)
{
u16 subtable = table >> 16;
u16 rule = table & 0xffff;
const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" };
if (subtable && subtable < ARRAY_SIZE(act_type))
dev_warn(&adapter->ccw_device->dev,
"Access denied according to ACT rule type %s, "
"rule %d\n", act_type[subtable], rule);
}
/**
* zfcp_cfdc_port_denied - Process "access denied" for port
* @port: The port where the access has been denied
* @qual: The FSF status qualifier for the access denied FSF status
*/
void zfcp_cfdc_port_denied(struct zfcp_port *port,
union fsf_status_qual *qual)
{
dev_warn(&port->adapter->ccw_device->dev,
"Access denied to port 0x%016Lx\n",
(unsigned long long)port->wwpn);
zfcp_act_eval_err(port->adapter, qual->halfword[0]);
zfcp_act_eval_err(port->adapter, qual->halfword[1]);
zfcp_erp_set_port_status(port,
ZFCP_STATUS_COMMON_ERP_FAILED |
ZFCP_STATUS_COMMON_ACCESS_DENIED);
}
/**
* zfcp_cfdc_lun_denied - Process "access denied" for LUN
* @sdev: The SCSI device / LUN where the access has been denied
* @qual: The FSF status qualifier for the access denied FSF status
*/
void zfcp_cfdc_lun_denied(struct scsi_device *sdev,
union fsf_status_qual *qual)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev,
"Access denied to LUN 0x%016Lx on port 0x%016Lx\n",
zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_act_eval_err(zfcp_sdev->port->adapter, qual->halfword[0]);
zfcp_act_eval_err(zfcp_sdev->port->adapter, qual->halfword[1]);
zfcp_erp_set_lun_status(sdev,
ZFCP_STATUS_COMMON_ERP_FAILED |
ZFCP_STATUS_COMMON_ACCESS_DENIED);
atomic_clear_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
atomic_clear_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
}
/**
* zfcp_cfdc_lun_shrng_vltn - Evaluate LUN sharing violation status
* @sdev: The LUN / SCSI device where sharing violation occurred
* @qual: The FSF status qualifier from the LUN sharing violation
*/
void zfcp_cfdc_lun_shrng_vltn(struct scsi_device *sdev,
union fsf_status_qual *qual)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
if (qual->word[0])
dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev,
"LUN 0x%Lx on port 0x%Lx is already in "
"use by CSS%d, MIF Image ID %x\n",
zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn,
qual->fsf_queue_designator.cssid,
qual->fsf_queue_designator.hla);
else
zfcp_act_eval_err(zfcp_sdev->port->adapter, qual->word[2]);
zfcp_erp_set_lun_status(sdev,
ZFCP_STATUS_COMMON_ERP_FAILED |
ZFCP_STATUS_COMMON_ACCESS_DENIED);
atomic_clear_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
atomic_clear_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
}
/**
* zfcp_cfdc_open_lun_eval - Eval access ctrl. status for successful "open lun"
* @sdev: The SCSI device / LUN where to evaluate the status
* @bottom: The qtcb bottom with the status from the "open lun"
*
* Returns: 0 if LUN is usable, -EACCES if the access control table
* reports an unsupported configuration.
*/
int zfcp_cfdc_open_lun_eval(struct scsi_device *sdev,
struct fsf_qtcb_bottom_support *bottom)
{
int shared, rw;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
if ((adapter->connection_features & FSF_FEATURE_NPIV_MODE) ||
!(adapter->adapter_features & FSF_FEATURE_LUN_SHARING) ||
zfcp_ccw_priv_sch(adapter))
return 0;
shared = !(bottom->lun_access_info & FSF_UNIT_ACCESS_EXCLUSIVE);
rw = (bottom->lun_access_info & FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
if (shared)
atomic_set_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
if (!rw) {
atomic_set_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
dev_info(&adapter->ccw_device->dev, "SCSI device at LUN "
"0x%016Lx on port 0x%016Lx opened read-only\n",
zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
}
if (!shared && !rw) {
dev_err(&adapter->ccw_device->dev, "Exclusive read-only access "
"not supported (LUN 0x%016Lx, port 0x%016Lx)\n",
zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
zfcp_erp_lun_shutdown(sdev, 0, "fsouh_6");
return -EACCES;
}
if (shared && rw) {
dev_err(&adapter->ccw_device->dev,
"Shared read-write access not supported "
"(LUN 0x%016Lx, port 0x%016Lx)\n",
zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
zfcp_erp_lun_shutdown(sdev, 0, "fsosh_8");
return -EACCES;
}
return 0;
}

4
drivers/s390/scsi/zfcp_def.h
View File

@ -86,10 +86,6 @@ struct zfcp_reqlist;
#define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001
#define ZFCP_STATUS_PORT_LINK_TEST 0x00000002
/* logical unit status */
#define ZFCP_STATUS_LUN_SHARED 0x00000004
#define ZFCP_STATUS_LUN_READONLY 0x00000008
/* FSF request status (this does not have a common part) */
#define ZFCP_STATUS_FSFREQ_ERROR 0x00000008
#define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010

3
drivers/s390/scsi/zfcp_erp.c
View File

@ -950,8 +950,7 @@ static void zfcp_erp_lun_strategy_clearstati(struct scsi_device *sdev)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_LUN_SHARED | ZFCP_STATUS_LUN_READONLY,
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED,
&zfcp_sdev->status);
}

14
drivers/s390/scsi/zfcp_ext.h
View File

@ -25,22 +25,10 @@ extern void zfcp_adapter_release(struct kref *);
extern void zfcp_adapter_unregister(struct zfcp_adapter *);
/* zfcp_ccw.c */
extern int zfcp_ccw_priv_sch(struct zfcp_adapter *);
extern struct ccw_driver zfcp_ccw_driver;
extern struct zfcp_adapter *zfcp_ccw_adapter_by_cdev(struct ccw_device *);
extern void zfcp_ccw_adapter_put(struct zfcp_adapter *);
/* zfcp_cfdc.c */
extern struct miscdevice zfcp_cfdc_misc;
extern void zfcp_cfdc_port_denied(struct zfcp_port *, union fsf_status_qual *);
extern void zfcp_cfdc_lun_denied(struct scsi_device *, union fsf_status_qual *);
extern void zfcp_cfdc_lun_shrng_vltn(struct scsi_device *,
union fsf_status_qual *);
extern int zfcp_cfdc_open_lun_eval(struct scsi_device *,
struct fsf_qtcb_bottom_support *);
extern void zfcp_cfdc_adapter_access_changed(struct zfcp_adapter *);
/* zfcp_dbf.c */
extern int zfcp_dbf_adapter_register(struct zfcp_adapter *);
extern void zfcp_dbf_adapter_unregister(struct zfcp_adapter *);
@ -115,8 +103,6 @@ extern int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *,
extern int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *);
extern int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *,
struct fsf_qtcb_bottom_port *);
extern struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *,
struct zfcp_fsf_cfdc *);
extern void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *);
extern int zfcp_fsf_status_read(struct zfcp_qdio *);
extern int zfcp_status_read_refill(struct zfcp_adapter *adapter);

127
drivers/s390/scsi/zfcp_fsf.c
View File

@ -254,14 +254,9 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
break;
case FSF_STATUS_READ_NOTIFICATION_LOST:
if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
zfcp_cfdc_adapter_access_changed(adapter);
if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
zfcp_fc_conditional_port_scan(adapter);
break;
case FSF_STATUS_READ_CFDC_UPDATED:
zfcp_cfdc_adapter_access_changed(adapter);
break;
case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
adapter->adapter_features = sr_buf->payload.word[0];
break;
@ -935,8 +930,6 @@ static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
break;
}
break;
case FSF_ACCESS_DENIED:
break;
case FSF_PORT_BOXED:
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
@ -1090,7 +1083,6 @@ out:
static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
{
struct zfcp_fsf_ct_els *send_els = req->data;
struct zfcp_port *port = send_els->port;
struct fsf_qtcb_header *header = &req->qtcb->header;
send_els->status = -EINVAL;
@ -1120,12 +1112,6 @@ static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
case FSF_REQUEST_SIZE_TOO_LARGE:
case FSF_RESPONSE_SIZE_TOO_LARGE:
break;
case FSF_ACCESS_DENIED:
if (port) {
zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
break;
case FSF_SBAL_MISMATCH:
/* should never occur, avoided in zfcp_fsf_send_els */
/* fall through */
@ -1213,8 +1199,6 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
req->qtcb->bottom.config.feature_selection =
FSF_FEATURE_CFDC |
FSF_FEATURE_LUN_SHARING |
FSF_FEATURE_NOTIFICATION_LOST |
FSF_FEATURE_UPDATE_ALERT;
req->erp_action = erp_action;
@ -1254,8 +1238,6 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
req->handler = zfcp_fsf_exchange_config_data_handler;
req->qtcb->bottom.config.feature_selection =
FSF_FEATURE_CFDC |
FSF_FEATURE_LUN_SHARING |
FSF_FEATURE_NOTIFICATION_LOST |
FSF_FEATURE_UPDATE_ALERT;
@ -1382,10 +1364,6 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
switch (header->fsf_status) {
case FSF_PORT_ALREADY_OPEN:
break;
case FSF_ACCESS_DENIED:
zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
dev_warn(&req->adapter->ccw_device->dev,
"Not enough FCP adapter resources to open "
@ -1568,8 +1546,6 @@ static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
/* fall through */
case FSF_ADAPTER_STATUS_AVAILABLE:
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
/* fall through */
case FSF_ACCESS_DENIED:
wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
break;
case FSF_GOOD:
@ -1689,9 +1665,6 @@ static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1");
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_ACCESS_DENIED:
zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
break;
case FSF_PORT_BOXED:
/* can't use generic zfcp_erp_modify_port_status because
* ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
@ -1777,7 +1750,7 @@ static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
struct scsi_device *sdev = req->data;
struct zfcp_scsi_dev *zfcp_sdev;
struct fsf_qtcb_header *header = &req->qtcb->header;
struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
union fsf_status_qual *qual = &header->fsf_status_qual;
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
return;
@ -1785,9 +1758,7 @@ static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
zfcp_sdev = sdev_to_zfcp(sdev);
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_COMMON_ACCESS_BOXED |
ZFCP_STATUS_LUN_SHARED |
ZFCP_STATUS_LUN_READONLY,
ZFCP_STATUS_COMMON_ACCESS_BOXED,
&zfcp_sdev->status);
switch (header->fsf_status) {
@ -1797,10 +1768,6 @@ static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
/* fall through */
case FSF_LUN_ALREADY_OPEN:
break;
case FSF_ACCESS_DENIED:
zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PORT_BOXED:
zfcp_erp_set_port_status(zfcp_sdev->port,
ZFCP_STATUS_COMMON_ACCESS_BOXED);
@ -1809,7 +1776,17 @@ static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_LUN_SHARING_VIOLATION:
zfcp_cfdc_lun_shrng_vltn(sdev, &header->fsf_status_qual);
if (qual->word[0])
dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev,
"LUN 0x%Lx on port 0x%Lx is already in "
"use by CSS%d, MIF Image ID %x\n",
zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn,
qual->fsf_queue_designator.cssid,
qual->fsf_queue_designator.hla);
zfcp_erp_set_lun_status(sdev,
ZFCP_STATUS_COMMON_ERP_FAILED |
ZFCP_STATUS_COMMON_ACCESS_DENIED);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
@ -1837,7 +1814,6 @@ static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
case FSF_GOOD:
zfcp_sdev->lun_handle = header->lun_handle;
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
zfcp_cfdc_open_lun_eval(sdev, bottom);
break;
}
}
@ -2065,10 +2041,6 @@ static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
zfcp_fsf_class_not_supp(req);
break;
case FSF_ACCESS_DENIED:
zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_DIRECTION_INDICATOR_NOT_VALID:
dev_err(&req->adapter->ccw_device->dev,
"Incorrect direction %d, LUN 0x%016Lx on port "
@ -2369,79 +2341,6 @@ out:
return req;
}
static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
{
}
/**
* zfcp_fsf_control_file - control file upload/download
* @adapter: pointer to struct zfcp_adapter
* @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
* Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
*/
struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
struct zfcp_fsf_cfdc *fsf_cfdc)
{
struct zfcp_qdio *qdio = adapter->qdio;
struct zfcp_fsf_req *req = NULL;
struct fsf_qtcb_bottom_support *bottom;
int retval = -EIO;
u8 direction;
if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
return ERR_PTR(-EOPNOTSUPP);
switch (fsf_cfdc->command) {
case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
direction = SBAL_SFLAGS0_TYPE_WRITE;
break;
case FSF_QTCB_UPLOAD_CONTROL_FILE:
direction = SBAL_SFLAGS0_TYPE_READ;
break;
default:
return ERR_PTR(-EINVAL);
}
spin_lock_irq(&qdio->req_q_lock);
if (zfcp_qdio_sbal_get(qdio))
goto out;
req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, direction, NULL);
if (IS_ERR(req)) {
retval = -EPERM;
goto out;
}
req->handler = zfcp_fsf_control_file_handler;
bottom = &req->qtcb->bottom.support;
bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
bottom->option = fsf_cfdc->option;
retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg);
if (retval ||
(zfcp_qdio_real_bytes(fsf_cfdc->sg) != ZFCP_CFDC_MAX_SIZE)) {
zfcp_fsf_req_free(req);
retval = -EIO;
goto out;
}
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
if (zfcp_adapter_multi_buffer_active(adapter))
zfcp_qdio_set_scount(qdio, &req->qdio_req);
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
retval = zfcp_fsf_req_send(req);
out:
spin_unlock_irq(&qdio->req_q_lock);
if (!retval) {
wait_for_completion(&req->completion);
return req;
}
return ERR_PTR(retval);
}
/**
* zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
* @adapter: pointer to struct zfcp_adapter

26
drivers/s390/scsi/zfcp_fsf.h
View File

@ -36,13 +36,6 @@
#define FSF_CONFIG_COMMAND 0x00000003
#define FSF_PORT_COMMAND 0x00000004
/* FSF control file upload/download operations' subtype and options */
#define FSF_CFDC_OPERATION_SUBTYPE 0x00020001
#define FSF_CFDC_OPTION_NORMAL_MODE 0x00000000
#define FSF_CFDC_OPTION_FORCE 0x00000001
#define FSF_CFDC_OPTION_FULL_ACCESS 0x00000002
#define FSF_CFDC_OPTION_RESTRICTED_ACCESS 0x00000004
/* FSF protocol states */
#define FSF_PROT_GOOD 0x00000001
#define FSF_PROT_QTCB_VERSION_ERROR 0x00000010
@ -64,7 +57,6 @@
#define FSF_HANDLE_MISMATCH 0x00000005
#define FSF_SERVICE_CLASS_NOT_SUPPORTED 0x00000006
#define FSF_FCPLUN_NOT_VALID 0x00000009
#define FSF_ACCESS_DENIED 0x00000010
#define FSF_LUN_SHARING_VIOLATION 0x00000012
#define FSF_FCP_COMMAND_DOES_NOT_EXIST 0x00000022
#define FSF_DIRECTION_INDICATOR_NOT_VALID 0x00000030
@ -130,7 +122,6 @@
#define FSF_STATUS_READ_LINK_DOWN 0x00000005
#define FSF_STATUS_READ_LINK_UP 0x00000006
#define FSF_STATUS_READ_NOTIFICATION_LOST 0x00000009
#define FSF_STATUS_READ_CFDC_UPDATED 0x0000000A
#define FSF_STATUS_READ_FEATURE_UPDATE_ALERT 0x0000000C
/* status subtypes for link down */
@ -140,7 +131,6 @@
/* status subtypes for unsolicited status notification lost */
#define FSF_STATUS_READ_SUB_INCOMING_ELS 0x00000001
#define FSF_STATUS_READ_SUB_ACT_UPDATED 0x00000020
/* topologie that is detected by the adapter */
#define FSF_TOPO_P2P 0x00000001
@ -166,8 +156,6 @@
#define FSF_QTCB_LOG_SIZE 1024
/* channel features */
#define FSF_FEATURE_CFDC 0x00000002
#define FSF_FEATURE_LUN_SHARING 0x00000004
#define FSF_FEATURE_NOTIFICATION_LOST 0x00000008
#define FSF_FEATURE_HBAAPI_MANAGEMENT 0x00000010
#define FSF_FEATURE_ELS_CT_CHAINED_SBALS 0x00000020
@ -182,20 +170,6 @@
/* option */
#define FSF_OPEN_LUN_SUPPRESS_BOXING 0x00000001
/* open LUN access flags*/
#define FSF_UNIT_ACCESS_EXCLUSIVE 0x02000000
#define FSF_UNIT_ACCESS_OUTBOUND_TRANSFER 0x10000000
/* FSF interface for CFDC */
#define ZFCP_CFDC_MAX_SIZE 127 * 1024
#define ZFCP_CFDC_PAGES PFN_UP(ZFCP_CFDC_MAX_SIZE)
struct zfcp_fsf_cfdc {
struct scatterlist sg[ZFCP_CFDC_PAGES];
u32 command;
u32 option;
};
struct fsf_queue_designator {
u8 cssid;
u8 chpid;

8
drivers/s390/scsi/zfcp_sysfs.c
View File

@ -75,12 +75,6 @@ ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
(zfcp_unit_sdev_status(unit) &
ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n",
(zfcp_unit_sdev_status(unit) &
ZFCP_STATUS_LUN_SHARED) != 0);
ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n",
(zfcp_unit_sdev_status(unit) &
ZFCP_STATUS_LUN_READONLY) != 0);
static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
struct device_attribute *attr,
@ -353,8 +347,6 @@ static struct attribute *zfcp_unit_attrs[] = {
&dev_attr_unit_in_recovery.attr,
&dev_attr_unit_status.attr,
&dev_attr_unit_access_denied.attr,
&dev_attr_unit_access_shared.attr,
&dev_attr_unit_access_readonly.attr,
NULL
};
static struct attribute_group zfcp_unit_attr_group = {