![Harald Freudenberger](/assets/img/avatar_default.png)
With the new multi zcrypt device node support there came in a code rework which broke the in-kernel api function zcrypt_send_cprb(). This function is used by the pkey kernel module and as an effect, transforming a secure key into a protected key did not work any more. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
1861 lines
46 KiB
C
1861 lines
46 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright IBM Corp. 2001, 2018
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* Author(s): Robert Burroughs
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* Eric Rossman (edrossma@us.ibm.com)
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* Cornelia Huck <cornelia.huck@de.ibm.com>
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*
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* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
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* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
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* Ralph Wuerthner <rwuerthn@de.ibm.com>
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* MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com>
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* Multiple device nodes: Harald Freudenberger <freude@linux.ibm.com>
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/miscdevice.h>
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#include <linux/fs.h>
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#include <linux/compat.h>
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#include <linux/slab.h>
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#include <linux/atomic.h>
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#include <linux/uaccess.h>
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#include <linux/hw_random.h>
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#include <linux/debugfs.h>
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#include <linux/cdev.h>
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#include <linux/ctype.h>
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#include <asm/debug.h>
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#define CREATE_TRACE_POINTS
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#include <asm/trace/zcrypt.h>
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#include "zcrypt_api.h"
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#include "zcrypt_debug.h"
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#include "zcrypt_msgtype6.h"
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#include "zcrypt_msgtype50.h"
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/*
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* Module description.
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*/
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MODULE_AUTHOR("IBM Corporation");
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MODULE_DESCRIPTION("Cryptographic Coprocessor interface, " \
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"Copyright IBM Corp. 2001, 2012");
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MODULE_LICENSE("GPL");
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/*
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* zcrypt tracepoint functions
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*/
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EXPORT_TRACEPOINT_SYMBOL(s390_zcrypt_req);
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EXPORT_TRACEPOINT_SYMBOL(s390_zcrypt_rep);
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static int zcrypt_hwrng_seed = 1;
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module_param_named(hwrng_seed, zcrypt_hwrng_seed, int, 0440);
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MODULE_PARM_DESC(hwrng_seed, "Turn on/off hwrng auto seed, default is 1 (on).");
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DEFINE_SPINLOCK(zcrypt_list_lock);
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LIST_HEAD(zcrypt_card_list);
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int zcrypt_device_count;
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static atomic_t zcrypt_open_count = ATOMIC_INIT(0);
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static atomic_t zcrypt_rescan_count = ATOMIC_INIT(0);
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atomic_t zcrypt_rescan_req = ATOMIC_INIT(0);
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EXPORT_SYMBOL(zcrypt_rescan_req);
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static LIST_HEAD(zcrypt_ops_list);
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/* Zcrypt related debug feature stuff. */
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debug_info_t *zcrypt_dbf_info;
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/**
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* Process a rescan of the transport layer.
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*
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* Returns 1, if the rescan has been processed, otherwise 0.
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*/
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static inline int zcrypt_process_rescan(void)
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{
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if (atomic_read(&zcrypt_rescan_req)) {
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atomic_set(&zcrypt_rescan_req, 0);
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atomic_inc(&zcrypt_rescan_count);
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ap_bus_force_rescan();
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ZCRYPT_DBF(DBF_INFO, "rescan count=%07d\n",
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atomic_inc_return(&zcrypt_rescan_count));
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return 1;
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}
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return 0;
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}
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void zcrypt_msgtype_register(struct zcrypt_ops *zops)
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{
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list_add_tail(&zops->list, &zcrypt_ops_list);
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}
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void zcrypt_msgtype_unregister(struct zcrypt_ops *zops)
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{
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list_del_init(&zops->list);
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}
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struct zcrypt_ops *zcrypt_msgtype(unsigned char *name, int variant)
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{
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struct zcrypt_ops *zops;
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list_for_each_entry(zops, &zcrypt_ops_list, list)
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if ((zops->variant == variant) &&
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(!strncmp(zops->name, name, sizeof(zops->name))))
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return zops;
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return NULL;
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}
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EXPORT_SYMBOL(zcrypt_msgtype);
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/*
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* Multi device nodes extension functions.
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*/
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#ifdef CONFIG_ZCRYPT_MULTIDEVNODES
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struct zcdn_device;
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static struct class *zcrypt_class;
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static dev_t zcrypt_devt;
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static struct cdev zcrypt_cdev;
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struct zcdn_device {
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struct device device;
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struct ap_perms perms;
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};
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#define to_zcdn_dev(x) container_of((x), struct zcdn_device, device)
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#define ZCDN_MAX_NAME 32
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static int zcdn_create(const char *name);
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static int zcdn_destroy(const char *name);
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/* helper function, matches the name for find_zcdndev_by_name() */
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static int __match_zcdn_name(struct device *dev, const void *data)
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{
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return strcmp(dev_name(dev), (const char *)data) == 0;
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}
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/* helper function, matches the devt value for find_zcdndev_by_devt() */
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static int __match_zcdn_devt(struct device *dev, const void *data)
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{
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return dev->devt == *((dev_t *) data);
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}
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/*
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* Find zcdn device by name.
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* Returns reference to the zcdn device which needs to be released
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* with put_device() after use.
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*/
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static inline struct zcdn_device *find_zcdndev_by_name(const char *name)
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{
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struct device *dev =
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class_find_device(zcrypt_class, NULL,
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(void *) name,
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__match_zcdn_name);
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return dev ? to_zcdn_dev(dev) : NULL;
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}
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/*
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* Find zcdn device by devt value.
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* Returns reference to the zcdn device which needs to be released
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* with put_device() after use.
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*/
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static inline struct zcdn_device *find_zcdndev_by_devt(dev_t devt)
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{
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struct device *dev =
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class_find_device(zcrypt_class, NULL,
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(void *) &devt,
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__match_zcdn_devt);
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return dev ? to_zcdn_dev(dev) : NULL;
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}
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static ssize_t ioctlmask_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int i, rc;
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struct zcdn_device *zcdndev = to_zcdn_dev(dev);
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if (mutex_lock_interruptible(&ap_perms_mutex))
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return -ERESTARTSYS;
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buf[0] = '0';
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buf[1] = 'x';
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for (i = 0; i < sizeof(zcdndev->perms.ioctlm) / sizeof(long); i++)
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snprintf(buf + 2 + 2 * i * sizeof(long),
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PAGE_SIZE - 2 - 2 * i * sizeof(long),
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"%016lx", zcdndev->perms.ioctlm[i]);
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buf[2 + 2 * i * sizeof(long)] = '\n';
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buf[2 + 2 * i * sizeof(long) + 1] = '\0';
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rc = 2 + 2 * i * sizeof(long) + 1;
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mutex_unlock(&ap_perms_mutex);
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return rc;
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}
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static ssize_t ioctlmask_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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int rc;
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struct zcdn_device *zcdndev = to_zcdn_dev(dev);
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rc = ap_parse_mask_str(buf, zcdndev->perms.ioctlm,
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AP_IOCTLS, &ap_perms_mutex);
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if (rc)
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return rc;
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return count;
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}
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static DEVICE_ATTR_RW(ioctlmask);
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static ssize_t apmask_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int i, rc;
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struct zcdn_device *zcdndev = to_zcdn_dev(dev);
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if (mutex_lock_interruptible(&ap_perms_mutex))
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return -ERESTARTSYS;
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buf[0] = '0';
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buf[1] = 'x';
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for (i = 0; i < sizeof(zcdndev->perms.apm) / sizeof(long); i++)
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snprintf(buf + 2 + 2 * i * sizeof(long),
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PAGE_SIZE - 2 - 2 * i * sizeof(long),
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"%016lx", zcdndev->perms.apm[i]);
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buf[2 + 2 * i * sizeof(long)] = '\n';
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buf[2 + 2 * i * sizeof(long) + 1] = '\0';
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rc = 2 + 2 * i * sizeof(long) + 1;
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mutex_unlock(&ap_perms_mutex);
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return rc;
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}
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static ssize_t apmask_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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int rc;
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struct zcdn_device *zcdndev = to_zcdn_dev(dev);
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rc = ap_parse_mask_str(buf, zcdndev->perms.apm,
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AP_DEVICES, &ap_perms_mutex);
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if (rc)
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return rc;
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return count;
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}
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static DEVICE_ATTR_RW(apmask);
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static ssize_t aqmask_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int i, rc;
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struct zcdn_device *zcdndev = to_zcdn_dev(dev);
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if (mutex_lock_interruptible(&ap_perms_mutex))
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return -ERESTARTSYS;
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buf[0] = '0';
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buf[1] = 'x';
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for (i = 0; i < sizeof(zcdndev->perms.aqm) / sizeof(long); i++)
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snprintf(buf + 2 + 2 * i * sizeof(long),
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PAGE_SIZE - 2 - 2 * i * sizeof(long),
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"%016lx", zcdndev->perms.aqm[i]);
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buf[2 + 2 * i * sizeof(long)] = '\n';
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buf[2 + 2 * i * sizeof(long) + 1] = '\0';
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rc = 2 + 2 * i * sizeof(long) + 1;
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mutex_unlock(&ap_perms_mutex);
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return rc;
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}
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static ssize_t aqmask_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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int rc;
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struct zcdn_device *zcdndev = to_zcdn_dev(dev);
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rc = ap_parse_mask_str(buf, zcdndev->perms.aqm,
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AP_DOMAINS, &ap_perms_mutex);
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if (rc)
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return rc;
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return count;
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}
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static DEVICE_ATTR_RW(aqmask);
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static struct attribute *zcdn_dev_attrs[] = {
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&dev_attr_ioctlmask.attr,
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&dev_attr_apmask.attr,
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&dev_attr_aqmask.attr,
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NULL
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};
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static struct attribute_group zcdn_dev_attr_group = {
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.attrs = zcdn_dev_attrs
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};
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static const struct attribute_group *zcdn_dev_attr_groups[] = {
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&zcdn_dev_attr_group,
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NULL
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};
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static ssize_t zcdn_create_store(struct class *class,
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struct class_attribute *attr,
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const char *buf, size_t count)
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{
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int rc;
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char name[ZCDN_MAX_NAME];
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strncpy(name, skip_spaces(buf), sizeof(name));
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name[sizeof(name) - 1] = '\0';
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rc = zcdn_create(strim(name));
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return rc ? rc : count;
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}
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static const struct class_attribute class_attr_zcdn_create =
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__ATTR(create, 0600, NULL, zcdn_create_store);
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static ssize_t zcdn_destroy_store(struct class *class,
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struct class_attribute *attr,
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const char *buf, size_t count)
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{
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int rc;
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char name[ZCDN_MAX_NAME];
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strncpy(name, skip_spaces(buf), sizeof(name));
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name[sizeof(name) - 1] = '\0';
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rc = zcdn_destroy(strim(name));
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return rc ? rc : count;
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}
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static const struct class_attribute class_attr_zcdn_destroy =
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__ATTR(destroy, 0600, NULL, zcdn_destroy_store);
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static void zcdn_device_release(struct device *dev)
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{
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struct zcdn_device *zcdndev = to_zcdn_dev(dev);
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ZCRYPT_DBF(DBF_INFO, "releasing zcdn device %d:%d\n",
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MAJOR(dev->devt), MINOR(dev->devt));
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kfree(zcdndev);
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}
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static int zcdn_create(const char *name)
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{
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dev_t devt;
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int i, rc = 0;
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char nodename[ZCDN_MAX_NAME];
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struct zcdn_device *zcdndev;
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if (mutex_lock_interruptible(&ap_perms_mutex))
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return -ERESTARTSYS;
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/* check if device node with this name already exists */
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if (name[0]) {
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zcdndev = find_zcdndev_by_name(name);
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if (zcdndev) {
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put_device(&zcdndev->device);
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rc = -EEXIST;
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goto unlockout;
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}
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}
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/* find an unused minor number */
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for (i = 0; i < ZCRYPT_MAX_MINOR_NODES; i++) {
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devt = MKDEV(MAJOR(zcrypt_devt), MINOR(zcrypt_devt) + i);
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zcdndev = find_zcdndev_by_devt(devt);
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if (zcdndev)
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put_device(&zcdndev->device);
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else
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break;
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}
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if (i == ZCRYPT_MAX_MINOR_NODES) {
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rc = -ENOSPC;
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goto unlockout;
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}
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/* alloc and prepare a new zcdn device */
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zcdndev = kzalloc(sizeof(*zcdndev), GFP_KERNEL);
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if (!zcdndev) {
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rc = -ENOMEM;
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goto unlockout;
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}
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zcdndev->device.release = zcdn_device_release;
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zcdndev->device.class = zcrypt_class;
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zcdndev->device.devt = devt;
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zcdndev->device.groups = zcdn_dev_attr_groups;
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if (name[0])
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strncpy(nodename, name, sizeof(nodename));
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else
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snprintf(nodename, sizeof(nodename),
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ZCRYPT_NAME "_%d", (int) MINOR(devt));
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nodename[sizeof(nodename)-1] = '\0';
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if (dev_set_name(&zcdndev->device, nodename)) {
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rc = -EINVAL;
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goto unlockout;
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}
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rc = device_register(&zcdndev->device);
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if (rc) {
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put_device(&zcdndev->device);
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goto unlockout;
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}
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ZCRYPT_DBF(DBF_INFO, "created zcdn device %d:%d\n",
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MAJOR(devt), MINOR(devt));
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unlockout:
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mutex_unlock(&ap_perms_mutex);
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return rc;
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}
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static int zcdn_destroy(const char *name)
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{
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int rc = 0;
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struct zcdn_device *zcdndev;
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if (mutex_lock_interruptible(&ap_perms_mutex))
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return -ERESTARTSYS;
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/* try to find this zcdn device */
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zcdndev = find_zcdndev_by_name(name);
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if (!zcdndev) {
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rc = -ENOENT;
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goto unlockout;
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}
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/*
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* The zcdn device is not hard destroyed. It is subject to
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* reference counting and thus just needs to be unregistered.
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*/
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put_device(&zcdndev->device);
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device_unregister(&zcdndev->device);
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unlockout:
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mutex_unlock(&ap_perms_mutex);
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return rc;
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}
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static void zcdn_destroy_all(void)
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{
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int i;
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dev_t devt;
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struct zcdn_device *zcdndev;
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mutex_lock(&ap_perms_mutex);
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for (i = 0; i < ZCRYPT_MAX_MINOR_NODES; i++) {
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devt = MKDEV(MAJOR(zcrypt_devt), MINOR(zcrypt_devt) + i);
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zcdndev = find_zcdndev_by_devt(devt);
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if (zcdndev) {
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put_device(&zcdndev->device);
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device_unregister(&zcdndev->device);
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}
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}
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mutex_unlock(&ap_perms_mutex);
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}
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#endif
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|
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/**
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* zcrypt_read (): Not supported beyond zcrypt 1.3.1.
|
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*
|
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* This function is not supported beyond zcrypt 1.3.1.
|
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*/
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static ssize_t zcrypt_read(struct file *filp, char __user *buf,
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size_t count, loff_t *f_pos)
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{
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return -EPERM;
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}
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|
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/**
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* zcrypt_write(): Not allowed.
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*
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* Write is is not allowed
|
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*/
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static ssize_t zcrypt_write(struct file *filp, const char __user *buf,
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size_t count, loff_t *f_pos)
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{
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return -EPERM;
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}
|
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|
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/**
|
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* zcrypt_open(): Count number of users.
|
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*
|
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* Device open function to count number of users.
|
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*/
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static int zcrypt_open(struct inode *inode, struct file *filp)
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{
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struct ap_perms *perms = &ap_perms;
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|
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#ifdef CONFIG_ZCRYPT_MULTIDEVNODES
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if (filp->f_inode->i_cdev == &zcrypt_cdev) {
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struct zcdn_device *zcdndev;
|
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|
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if (mutex_lock_interruptible(&ap_perms_mutex))
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return -ERESTARTSYS;
|
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zcdndev = find_zcdndev_by_devt(filp->f_inode->i_rdev);
|
|
/* find returns a reference, no get_device() needed */
|
|
mutex_unlock(&ap_perms_mutex);
|
|
if (zcdndev)
|
|
perms = &zcdndev->perms;
|
|
}
|
|
#endif
|
|
filp->private_data = (void *) perms;
|
|
|
|
atomic_inc(&zcrypt_open_count);
|
|
return nonseekable_open(inode, filp);
|
|
}
|
|
|
|
/**
|
|
* zcrypt_release(): Count number of users.
|
|
*
|
|
* Device close function to count number of users.
|
|
*/
|
|
static int zcrypt_release(struct inode *inode, struct file *filp)
|
|
{
|
|
#ifdef CONFIG_ZCRYPT_MULTIDEVNODES
|
|
if (filp->f_inode->i_cdev == &zcrypt_cdev) {
|
|
struct zcdn_device *zcdndev;
|
|
|
|
if (mutex_lock_interruptible(&ap_perms_mutex))
|
|
return -ERESTARTSYS;
|
|
zcdndev = find_zcdndev_by_devt(filp->f_inode->i_rdev);
|
|
mutex_unlock(&ap_perms_mutex);
|
|
if (zcdndev) {
|
|
/* 2 puts here: one for find, one for open */
|
|
put_device(&zcdndev->device);
|
|
put_device(&zcdndev->device);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
atomic_dec(&zcrypt_open_count);
|
|
return 0;
|
|
}
|
|
|
|
static inline int zcrypt_check_ioctl(struct ap_perms *perms,
|
|
unsigned int cmd)
|
|
{
|
|
int rc = -EPERM;
|
|
int ioctlnr = (cmd & _IOC_NRMASK) >> _IOC_NRSHIFT;
|
|
|
|
if (ioctlnr > 0 && ioctlnr < AP_IOCTLS) {
|
|
if (test_bit_inv(ioctlnr, perms->ioctlm))
|
|
rc = 0;
|
|
}
|
|
|
|
if (rc)
|
|
ZCRYPT_DBF(DBF_WARN,
|
|
"ioctl check failed: ioctlnr=0x%04x rc=%d\n",
|
|
ioctlnr, rc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static inline bool zcrypt_check_card(struct ap_perms *perms, int card)
|
|
{
|
|
return test_bit_inv(card, perms->apm) ? true : false;
|
|
}
|
|
|
|
static inline bool zcrypt_check_queue(struct ap_perms *perms, int queue)
|
|
{
|
|
return test_bit_inv(queue, perms->aqm) ? true : false;
|
|
}
|
|
|
|
static inline struct zcrypt_queue *zcrypt_pick_queue(struct zcrypt_card *zc,
|
|
struct zcrypt_queue *zq,
|
|
unsigned int weight)
|
|
{
|
|
if (!zq || !try_module_get(zq->queue->ap_dev.drv->driver.owner))
|
|
return NULL;
|
|
zcrypt_queue_get(zq);
|
|
get_device(&zq->queue->ap_dev.device);
|
|
atomic_add(weight, &zc->load);
|
|
atomic_add(weight, &zq->load);
|
|
zq->request_count++;
|
|
return zq;
|
|
}
|
|
|
|
static inline void zcrypt_drop_queue(struct zcrypt_card *zc,
|
|
struct zcrypt_queue *zq,
|
|
unsigned int weight)
|
|
{
|
|
struct module *mod = zq->queue->ap_dev.drv->driver.owner;
|
|
|
|
zq->request_count--;
|
|
atomic_sub(weight, &zc->load);
|
|
atomic_sub(weight, &zq->load);
|
|
put_device(&zq->queue->ap_dev.device);
|
|
zcrypt_queue_put(zq);
|
|
module_put(mod);
|
|
}
|
|
|
|
static inline bool zcrypt_card_compare(struct zcrypt_card *zc,
|
|
struct zcrypt_card *pref_zc,
|
|
unsigned int weight,
|
|
unsigned int pref_weight)
|
|
{
|
|
if (!pref_zc)
|
|
return false;
|
|
weight += atomic_read(&zc->load);
|
|
pref_weight += atomic_read(&pref_zc->load);
|
|
if (weight == pref_weight)
|
|
return atomic_read(&zc->card->total_request_count) >
|
|
atomic_read(&pref_zc->card->total_request_count);
|
|
return weight > pref_weight;
|
|
}
|
|
|
|
static inline bool zcrypt_queue_compare(struct zcrypt_queue *zq,
|
|
struct zcrypt_queue *pref_zq,
|
|
unsigned int weight,
|
|
unsigned int pref_weight)
|
|
{
|
|
if (!pref_zq)
|
|
return false;
|
|
weight += atomic_read(&zq->load);
|
|
pref_weight += atomic_read(&pref_zq->load);
|
|
if (weight == pref_weight)
|
|
return zq->queue->total_request_count >
|
|
pref_zq->queue->total_request_count;
|
|
return weight > pref_weight;
|
|
}
|
|
|
|
/*
|
|
* zcrypt ioctls.
|
|
*/
|
|
static long zcrypt_rsa_modexpo(struct ap_perms *perms,
|
|
struct ica_rsa_modexpo *mex)
|
|
{
|
|
struct zcrypt_card *zc, *pref_zc;
|
|
struct zcrypt_queue *zq, *pref_zq;
|
|
unsigned int weight, pref_weight;
|
|
unsigned int func_code;
|
|
int qid = 0, rc = -ENODEV;
|
|
|
|
trace_s390_zcrypt_req(mex, TP_ICARSAMODEXPO);
|
|
|
|
if (mex->outputdatalength < mex->inputdatalength) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* As long as outputdatalength is big enough, we can set the
|
|
* outputdatalength equal to the inputdatalength, since that is the
|
|
* number of bytes we will copy in any case
|
|
*/
|
|
mex->outputdatalength = mex->inputdatalength;
|
|
|
|
rc = get_rsa_modex_fc(mex, &func_code);
|
|
if (rc)
|
|
goto out;
|
|
|
|
pref_zc = NULL;
|
|
pref_zq = NULL;
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
/* Check for online accelarator and CCA cards */
|
|
if (!zc->online || !(zc->card->functions & 0x18000000))
|
|
continue;
|
|
/* Check for size limits */
|
|
if (zc->min_mod_size > mex->inputdatalength ||
|
|
zc->max_mod_size < mex->inputdatalength)
|
|
continue;
|
|
/* check if device node has admission for this card */
|
|
if (!zcrypt_check_card(perms, zc->card->id))
|
|
continue;
|
|
/* get weight index of the card device */
|
|
weight = zc->speed_rating[func_code];
|
|
if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight))
|
|
continue;
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
/* check if device is online and eligible */
|
|
if (!zq->online || !zq->ops->rsa_modexpo)
|
|
continue;
|
|
/* check if device node has admission for this queue */
|
|
if (!zcrypt_check_queue(perms,
|
|
AP_QID_QUEUE(zq->queue->qid)))
|
|
continue;
|
|
if (zcrypt_queue_compare(zq, pref_zq,
|
|
weight, pref_weight))
|
|
continue;
|
|
pref_zc = zc;
|
|
pref_zq = zq;
|
|
pref_weight = weight;
|
|
}
|
|
}
|
|
pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
if (!pref_zq) {
|
|
rc = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
qid = pref_zq->queue->qid;
|
|
rc = pref_zq->ops->rsa_modexpo(pref_zq, mex);
|
|
|
|
spin_lock(&zcrypt_list_lock);
|
|
zcrypt_drop_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
out:
|
|
trace_s390_zcrypt_rep(mex, func_code, rc,
|
|
AP_QID_CARD(qid), AP_QID_QUEUE(qid));
|
|
return rc;
|
|
}
|
|
|
|
static long zcrypt_rsa_crt(struct ap_perms *perms,
|
|
struct ica_rsa_modexpo_crt *crt)
|
|
{
|
|
struct zcrypt_card *zc, *pref_zc;
|
|
struct zcrypt_queue *zq, *pref_zq;
|
|
unsigned int weight, pref_weight;
|
|
unsigned int func_code;
|
|
int qid = 0, rc = -ENODEV;
|
|
|
|
trace_s390_zcrypt_req(crt, TP_ICARSACRT);
|
|
|
|
if (crt->outputdatalength < crt->inputdatalength) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* As long as outputdatalength is big enough, we can set the
|
|
* outputdatalength equal to the inputdatalength, since that is the
|
|
* number of bytes we will copy in any case
|
|
*/
|
|
crt->outputdatalength = crt->inputdatalength;
|
|
|
|
rc = get_rsa_crt_fc(crt, &func_code);
|
|
if (rc)
|
|
goto out;
|
|
|
|
pref_zc = NULL;
|
|
pref_zq = NULL;
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
/* Check for online accelarator and CCA cards */
|
|
if (!zc->online || !(zc->card->functions & 0x18000000))
|
|
continue;
|
|
/* Check for size limits */
|
|
if (zc->min_mod_size > crt->inputdatalength ||
|
|
zc->max_mod_size < crt->inputdatalength)
|
|
continue;
|
|
/* check if device node has admission for this card */
|
|
if (!zcrypt_check_card(perms, zc->card->id))
|
|
continue;
|
|
/* get weight index of the card device */
|
|
weight = zc->speed_rating[func_code];
|
|
if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight))
|
|
continue;
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
/* check if device is online and eligible */
|
|
if (!zq->online || !zq->ops->rsa_modexpo_crt)
|
|
continue;
|
|
/* check if device node has admission for this queue */
|
|
if (!zcrypt_check_queue(perms,
|
|
AP_QID_QUEUE(zq->queue->qid)))
|
|
continue;
|
|
if (zcrypt_queue_compare(zq, pref_zq,
|
|
weight, pref_weight))
|
|
continue;
|
|
pref_zc = zc;
|
|
pref_zq = zq;
|
|
pref_weight = weight;
|
|
}
|
|
}
|
|
pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
if (!pref_zq) {
|
|
rc = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
qid = pref_zq->queue->qid;
|
|
rc = pref_zq->ops->rsa_modexpo_crt(pref_zq, crt);
|
|
|
|
spin_lock(&zcrypt_list_lock);
|
|
zcrypt_drop_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
out:
|
|
trace_s390_zcrypt_rep(crt, func_code, rc,
|
|
AP_QID_CARD(qid), AP_QID_QUEUE(qid));
|
|
return rc;
|
|
}
|
|
|
|
static long _zcrypt_send_cprb(struct ap_perms *perms,
|
|
struct ica_xcRB *xcRB)
|
|
{
|
|
struct zcrypt_card *zc, *pref_zc;
|
|
struct zcrypt_queue *zq, *pref_zq;
|
|
struct ap_message ap_msg;
|
|
unsigned int weight, pref_weight;
|
|
unsigned int func_code;
|
|
unsigned short *domain;
|
|
int qid = 0, rc = -ENODEV;
|
|
|
|
trace_s390_zcrypt_req(xcRB, TB_ZSECSENDCPRB);
|
|
|
|
xcRB->status = 0;
|
|
ap_init_message(&ap_msg);
|
|
rc = get_cprb_fc(xcRB, &ap_msg, &func_code, &domain);
|
|
if (rc)
|
|
goto out;
|
|
|
|
pref_zc = NULL;
|
|
pref_zq = NULL;
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
/* Check for online CCA cards */
|
|
if (!zc->online || !(zc->card->functions & 0x10000000))
|
|
continue;
|
|
/* Check for user selected CCA card */
|
|
if (xcRB->user_defined != AUTOSELECT &&
|
|
xcRB->user_defined != zc->card->id)
|
|
continue;
|
|
/* check if device node has admission for this card */
|
|
if (!zcrypt_check_card(perms, zc->card->id))
|
|
continue;
|
|
/* get weight index of the card device */
|
|
weight = speed_idx_cca(func_code) * zc->speed_rating[SECKEY];
|
|
if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight))
|
|
continue;
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
/* check if device is online and eligible */
|
|
if (!zq->online ||
|
|
!zq->ops->send_cprb ||
|
|
((*domain != (unsigned short) AUTOSELECT) &&
|
|
(*domain != AP_QID_QUEUE(zq->queue->qid))))
|
|
continue;
|
|
/* check if device node has admission for this queue */
|
|
if (!zcrypt_check_queue(perms,
|
|
AP_QID_QUEUE(zq->queue->qid)))
|
|
continue;
|
|
if (zcrypt_queue_compare(zq, pref_zq,
|
|
weight, pref_weight))
|
|
continue;
|
|
pref_zc = zc;
|
|
pref_zq = zq;
|
|
pref_weight = weight;
|
|
}
|
|
}
|
|
pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
if (!pref_zq) {
|
|
rc = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
/* in case of auto select, provide the correct domain */
|
|
qid = pref_zq->queue->qid;
|
|
if (*domain == (unsigned short) AUTOSELECT)
|
|
*domain = AP_QID_QUEUE(qid);
|
|
|
|
rc = pref_zq->ops->send_cprb(pref_zq, xcRB, &ap_msg);
|
|
|
|
spin_lock(&zcrypt_list_lock);
|
|
zcrypt_drop_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
out:
|
|
ap_release_message(&ap_msg);
|
|
trace_s390_zcrypt_rep(xcRB, func_code, rc,
|
|
AP_QID_CARD(qid), AP_QID_QUEUE(qid));
|
|
return rc;
|
|
}
|
|
|
|
long zcrypt_send_cprb(struct ica_xcRB *xcRB)
|
|
{
|
|
return _zcrypt_send_cprb(&ap_perms, xcRB);
|
|
}
|
|
EXPORT_SYMBOL(zcrypt_send_cprb);
|
|
|
|
static bool is_desired_ep11_card(unsigned int dev_id,
|
|
unsigned short target_num,
|
|
struct ep11_target_dev *targets)
|
|
{
|
|
while (target_num-- > 0) {
|
|
if (dev_id == targets->ap_id)
|
|
return true;
|
|
targets++;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool is_desired_ep11_queue(unsigned int dev_qid,
|
|
unsigned short target_num,
|
|
struct ep11_target_dev *targets)
|
|
{
|
|
while (target_num-- > 0) {
|
|
if (AP_MKQID(targets->ap_id, targets->dom_id) == dev_qid)
|
|
return true;
|
|
targets++;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static long zcrypt_send_ep11_cprb(struct ap_perms *perms,
|
|
struct ep11_urb *xcrb)
|
|
{
|
|
struct zcrypt_card *zc, *pref_zc;
|
|
struct zcrypt_queue *zq, *pref_zq;
|
|
struct ep11_target_dev *targets;
|
|
unsigned short target_num;
|
|
unsigned int weight, pref_weight;
|
|
unsigned int func_code;
|
|
struct ap_message ap_msg;
|
|
int qid = 0, rc = -ENODEV;
|
|
|
|
trace_s390_zcrypt_req(xcrb, TP_ZSENDEP11CPRB);
|
|
|
|
ap_init_message(&ap_msg);
|
|
|
|
target_num = (unsigned short) xcrb->targets_num;
|
|
|
|
/* empty list indicates autoselect (all available targets) */
|
|
targets = NULL;
|
|
if (target_num != 0) {
|
|
struct ep11_target_dev __user *uptr;
|
|
|
|
targets = kcalloc(target_num, sizeof(*targets), GFP_KERNEL);
|
|
if (!targets) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
uptr = (struct ep11_target_dev __force __user *) xcrb->targets;
|
|
if (copy_from_user(targets, uptr,
|
|
target_num * sizeof(*targets))) {
|
|
rc = -EFAULT;
|
|
goto out_free;
|
|
}
|
|
}
|
|
|
|
rc = get_ep11cprb_fc(xcrb, &ap_msg, &func_code);
|
|
if (rc)
|
|
goto out_free;
|
|
|
|
pref_zc = NULL;
|
|
pref_zq = NULL;
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
/* Check for online EP11 cards */
|
|
if (!zc->online || !(zc->card->functions & 0x04000000))
|
|
continue;
|
|
/* Check for user selected EP11 card */
|
|
if (targets &&
|
|
!is_desired_ep11_card(zc->card->id, target_num, targets))
|
|
continue;
|
|
/* check if device node has admission for this card */
|
|
if (!zcrypt_check_card(perms, zc->card->id))
|
|
continue;
|
|
/* get weight index of the card device */
|
|
weight = speed_idx_ep11(func_code) * zc->speed_rating[SECKEY];
|
|
if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight))
|
|
continue;
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
/* check if device is online and eligible */
|
|
if (!zq->online ||
|
|
!zq->ops->send_ep11_cprb ||
|
|
(targets &&
|
|
!is_desired_ep11_queue(zq->queue->qid,
|
|
target_num, targets)))
|
|
continue;
|
|
/* check if device node has admission for this queue */
|
|
if (!zcrypt_check_queue(perms,
|
|
AP_QID_QUEUE(zq->queue->qid)))
|
|
continue;
|
|
if (zcrypt_queue_compare(zq, pref_zq,
|
|
weight, pref_weight))
|
|
continue;
|
|
pref_zc = zc;
|
|
pref_zq = zq;
|
|
pref_weight = weight;
|
|
}
|
|
}
|
|
pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
if (!pref_zq) {
|
|
rc = -ENODEV;
|
|
goto out_free;
|
|
}
|
|
|
|
qid = pref_zq->queue->qid;
|
|
rc = pref_zq->ops->send_ep11_cprb(pref_zq, xcrb, &ap_msg);
|
|
|
|
spin_lock(&zcrypt_list_lock);
|
|
zcrypt_drop_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
out_free:
|
|
kfree(targets);
|
|
out:
|
|
ap_release_message(&ap_msg);
|
|
trace_s390_zcrypt_rep(xcrb, func_code, rc,
|
|
AP_QID_CARD(qid), AP_QID_QUEUE(qid));
|
|
return rc;
|
|
}
|
|
|
|
static long zcrypt_rng(char *buffer)
|
|
{
|
|
struct zcrypt_card *zc, *pref_zc;
|
|
struct zcrypt_queue *zq, *pref_zq;
|
|
unsigned int weight, pref_weight;
|
|
unsigned int func_code;
|
|
struct ap_message ap_msg;
|
|
unsigned int domain;
|
|
int qid = 0, rc = -ENODEV;
|
|
|
|
trace_s390_zcrypt_req(buffer, TP_HWRNGCPRB);
|
|
|
|
ap_init_message(&ap_msg);
|
|
rc = get_rng_fc(&ap_msg, &func_code, &domain);
|
|
if (rc)
|
|
goto out;
|
|
|
|
pref_zc = NULL;
|
|
pref_zq = NULL;
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
/* Check for online CCA cards */
|
|
if (!zc->online || !(zc->card->functions & 0x10000000))
|
|
continue;
|
|
/* get weight index of the card device */
|
|
weight = zc->speed_rating[func_code];
|
|
if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight))
|
|
continue;
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
/* check if device is online and eligible */
|
|
if (!zq->online || !zq->ops->rng)
|
|
continue;
|
|
if (zcrypt_queue_compare(zq, pref_zq,
|
|
weight, pref_weight))
|
|
continue;
|
|
pref_zc = zc;
|
|
pref_zq = zq;
|
|
pref_weight = weight;
|
|
}
|
|
}
|
|
pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
if (!pref_zq) {
|
|
rc = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
qid = pref_zq->queue->qid;
|
|
rc = pref_zq->ops->rng(pref_zq, buffer, &ap_msg);
|
|
|
|
spin_lock(&zcrypt_list_lock);
|
|
zcrypt_drop_queue(pref_zc, pref_zq, weight);
|
|
spin_unlock(&zcrypt_list_lock);
|
|
|
|
out:
|
|
ap_release_message(&ap_msg);
|
|
trace_s390_zcrypt_rep(buffer, func_code, rc,
|
|
AP_QID_CARD(qid), AP_QID_QUEUE(qid));
|
|
return rc;
|
|
}
|
|
|
|
static void zcrypt_device_status_mask(struct zcrypt_device_status *devstatus)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
struct zcrypt_device_status *stat;
|
|
int card, queue;
|
|
|
|
memset(devstatus, 0, MAX_ZDEV_ENTRIES
|
|
* sizeof(struct zcrypt_device_status));
|
|
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
card = AP_QID_CARD(zq->queue->qid);
|
|
if (card >= MAX_ZDEV_CARDIDS)
|
|
continue;
|
|
queue = AP_QID_QUEUE(zq->queue->qid);
|
|
stat = &devstatus[card * AP_DOMAINS + queue];
|
|
stat->hwtype = zc->card->ap_dev.device_type;
|
|
stat->functions = zc->card->functions >> 26;
|
|
stat->qid = zq->queue->qid;
|
|
stat->online = zq->online ? 0x01 : 0x00;
|
|
}
|
|
}
|
|
spin_unlock(&zcrypt_list_lock);
|
|
}
|
|
|
|
void zcrypt_device_status_mask_ext(struct zcrypt_device_status_ext *devstatus)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
struct zcrypt_device_status_ext *stat;
|
|
int card, queue;
|
|
|
|
memset(devstatus, 0, MAX_ZDEV_ENTRIES_EXT
|
|
* sizeof(struct zcrypt_device_status_ext));
|
|
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
card = AP_QID_CARD(zq->queue->qid);
|
|
queue = AP_QID_QUEUE(zq->queue->qid);
|
|
stat = &devstatus[card * AP_DOMAINS + queue];
|
|
stat->hwtype = zc->card->ap_dev.device_type;
|
|
stat->functions = zc->card->functions >> 26;
|
|
stat->qid = zq->queue->qid;
|
|
stat->online = zq->online ? 0x01 : 0x00;
|
|
}
|
|
}
|
|
spin_unlock(&zcrypt_list_lock);
|
|
}
|
|
EXPORT_SYMBOL(zcrypt_device_status_mask_ext);
|
|
|
|
static void zcrypt_status_mask(char status[], size_t max_adapters)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
int card;
|
|
|
|
memset(status, 0, max_adapters);
|
|
spin_lock(&zcrypt_list_lock);
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
card = AP_QID_CARD(zq->queue->qid);
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index
|
|
|| card >= max_adapters)
|
|
continue;
|
|
status[card] = zc->online ? zc->user_space_type : 0x0d;
|
|
}
|
|
}
|
|
spin_unlock(&zcrypt_list_lock);
|
|
}
|
|
|
|
static void zcrypt_qdepth_mask(char qdepth[], size_t max_adapters)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
int card;
|
|
|
|
memset(qdepth, 0, max_adapters);
|
|
spin_lock(&zcrypt_list_lock);
|
|
local_bh_disable();
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
card = AP_QID_CARD(zq->queue->qid);
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index
|
|
|| card >= max_adapters)
|
|
continue;
|
|
spin_lock(&zq->queue->lock);
|
|
qdepth[card] =
|
|
zq->queue->pendingq_count +
|
|
zq->queue->requestq_count;
|
|
spin_unlock(&zq->queue->lock);
|
|
}
|
|
}
|
|
local_bh_enable();
|
|
spin_unlock(&zcrypt_list_lock);
|
|
}
|
|
|
|
static void zcrypt_perdev_reqcnt(int reqcnt[], size_t max_adapters)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
int card;
|
|
|
|
memset(reqcnt, 0, sizeof(int) * max_adapters);
|
|
spin_lock(&zcrypt_list_lock);
|
|
local_bh_disable();
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
card = AP_QID_CARD(zq->queue->qid);
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index
|
|
|| card >= max_adapters)
|
|
continue;
|
|
spin_lock(&zq->queue->lock);
|
|
reqcnt[card] = zq->queue->total_request_count;
|
|
spin_unlock(&zq->queue->lock);
|
|
}
|
|
}
|
|
local_bh_enable();
|
|
spin_unlock(&zcrypt_list_lock);
|
|
}
|
|
|
|
static int zcrypt_pendingq_count(void)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
int pendingq_count;
|
|
|
|
pendingq_count = 0;
|
|
spin_lock(&zcrypt_list_lock);
|
|
local_bh_disable();
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index)
|
|
continue;
|
|
spin_lock(&zq->queue->lock);
|
|
pendingq_count += zq->queue->pendingq_count;
|
|
spin_unlock(&zq->queue->lock);
|
|
}
|
|
}
|
|
local_bh_enable();
|
|
spin_unlock(&zcrypt_list_lock);
|
|
return pendingq_count;
|
|
}
|
|
|
|
static int zcrypt_requestq_count(void)
|
|
{
|
|
struct zcrypt_card *zc;
|
|
struct zcrypt_queue *zq;
|
|
int requestq_count;
|
|
|
|
requestq_count = 0;
|
|
spin_lock(&zcrypt_list_lock);
|
|
local_bh_disable();
|
|
for_each_zcrypt_card(zc) {
|
|
for_each_zcrypt_queue(zq, zc) {
|
|
if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index)
|
|
continue;
|
|
spin_lock(&zq->queue->lock);
|
|
requestq_count += zq->queue->requestq_count;
|
|
spin_unlock(&zq->queue->lock);
|
|
}
|
|
}
|
|
local_bh_enable();
|
|
spin_unlock(&zcrypt_list_lock);
|
|
return requestq_count;
|
|
}
|
|
|
|
static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
int rc;
|
|
struct ap_perms *perms =
|
|
(struct ap_perms *) filp->private_data;
|
|
|
|
rc = zcrypt_check_ioctl(perms, cmd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
switch (cmd) {
|
|
case ICARSAMODEXPO: {
|
|
struct ica_rsa_modexpo __user *umex = (void __user *) arg;
|
|
struct ica_rsa_modexpo mex;
|
|
|
|
if (copy_from_user(&mex, umex, sizeof(mex)))
|
|
return -EFAULT;
|
|
do {
|
|
rc = zcrypt_rsa_modexpo(perms, &mex);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = zcrypt_rsa_modexpo(perms, &mex);
|
|
} while (rc == -EAGAIN);
|
|
if (rc) {
|
|
ZCRYPT_DBF(DBF_DEBUG, "ioctl ICARSAMODEXPO rc=%d\n", rc);
|
|
return rc;
|
|
}
|
|
return put_user(mex.outputdatalength, &umex->outputdatalength);
|
|
}
|
|
case ICARSACRT: {
|
|
struct ica_rsa_modexpo_crt __user *ucrt = (void __user *) arg;
|
|
struct ica_rsa_modexpo_crt crt;
|
|
|
|
if (copy_from_user(&crt, ucrt, sizeof(crt)))
|
|
return -EFAULT;
|
|
do {
|
|
rc = zcrypt_rsa_crt(perms, &crt);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = zcrypt_rsa_crt(perms, &crt);
|
|
} while (rc == -EAGAIN);
|
|
if (rc) {
|
|
ZCRYPT_DBF(DBF_DEBUG, "ioctl ICARSACRT rc=%d\n", rc);
|
|
return rc;
|
|
}
|
|
return put_user(crt.outputdatalength, &ucrt->outputdatalength);
|
|
}
|
|
case ZSECSENDCPRB: {
|
|
struct ica_xcRB __user *uxcRB = (void __user *) arg;
|
|
struct ica_xcRB xcRB;
|
|
|
|
if (copy_from_user(&xcRB, uxcRB, sizeof(xcRB)))
|
|
return -EFAULT;
|
|
do {
|
|
rc = _zcrypt_send_cprb(perms, &xcRB);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = _zcrypt_send_cprb(perms, &xcRB);
|
|
} while (rc == -EAGAIN);
|
|
if (rc)
|
|
ZCRYPT_DBF(DBF_DEBUG, "ioctl ZSENDCPRB rc=%d status=0x%x\n",
|
|
rc, xcRB.status);
|
|
if (copy_to_user(uxcRB, &xcRB, sizeof(xcRB)))
|
|
return -EFAULT;
|
|
return rc;
|
|
}
|
|
case ZSENDEP11CPRB: {
|
|
struct ep11_urb __user *uxcrb = (void __user *)arg;
|
|
struct ep11_urb xcrb;
|
|
|
|
if (copy_from_user(&xcrb, uxcrb, sizeof(xcrb)))
|
|
return -EFAULT;
|
|
do {
|
|
rc = zcrypt_send_ep11_cprb(perms, &xcrb);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = zcrypt_send_ep11_cprb(perms, &xcrb);
|
|
} while (rc == -EAGAIN);
|
|
if (rc)
|
|
ZCRYPT_DBF(DBF_DEBUG, "ioctl ZSENDEP11CPRB rc=%d\n", rc);
|
|
if (copy_to_user(uxcrb, &xcrb, sizeof(xcrb)))
|
|
return -EFAULT;
|
|
return rc;
|
|
}
|
|
case ZCRYPT_DEVICE_STATUS: {
|
|
struct zcrypt_device_status_ext *device_status;
|
|
size_t total_size = MAX_ZDEV_ENTRIES_EXT
|
|
* sizeof(struct zcrypt_device_status_ext);
|
|
|
|
device_status = kzalloc(total_size, GFP_KERNEL);
|
|
if (!device_status)
|
|
return -ENOMEM;
|
|
zcrypt_device_status_mask_ext(device_status);
|
|
if (copy_to_user((char __user *) arg, device_status,
|
|
total_size))
|
|
rc = -EFAULT;
|
|
kfree(device_status);
|
|
return rc;
|
|
}
|
|
case ZCRYPT_STATUS_MASK: {
|
|
char status[AP_DEVICES];
|
|
|
|
zcrypt_status_mask(status, AP_DEVICES);
|
|
if (copy_to_user((char __user *) arg, status, sizeof(status)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
case ZCRYPT_QDEPTH_MASK: {
|
|
char qdepth[AP_DEVICES];
|
|
|
|
zcrypt_qdepth_mask(qdepth, AP_DEVICES);
|
|
if (copy_to_user((char __user *) arg, qdepth, sizeof(qdepth)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
case ZCRYPT_PERDEV_REQCNT: {
|
|
int *reqcnt;
|
|
|
|
reqcnt = kcalloc(AP_DEVICES, sizeof(int), GFP_KERNEL);
|
|
if (!reqcnt)
|
|
return -ENOMEM;
|
|
zcrypt_perdev_reqcnt(reqcnt, AP_DEVICES);
|
|
if (copy_to_user((int __user *) arg, reqcnt, sizeof(reqcnt)))
|
|
rc = -EFAULT;
|
|
kfree(reqcnt);
|
|
return rc;
|
|
}
|
|
case Z90STAT_REQUESTQ_COUNT:
|
|
return put_user(zcrypt_requestq_count(), (int __user *) arg);
|
|
case Z90STAT_PENDINGQ_COUNT:
|
|
return put_user(zcrypt_pendingq_count(), (int __user *) arg);
|
|
case Z90STAT_TOTALOPEN_COUNT:
|
|
return put_user(atomic_read(&zcrypt_open_count),
|
|
(int __user *) arg);
|
|
case Z90STAT_DOMAIN_INDEX:
|
|
return put_user(ap_domain_index, (int __user *) arg);
|
|
/*
|
|
* Deprecated ioctls
|
|
*/
|
|
case ZDEVICESTATUS: {
|
|
/* the old ioctl supports only 64 adapters */
|
|
struct zcrypt_device_status *device_status;
|
|
size_t total_size = MAX_ZDEV_ENTRIES
|
|
* sizeof(struct zcrypt_device_status);
|
|
|
|
device_status = kzalloc(total_size, GFP_KERNEL);
|
|
if (!device_status)
|
|
return -ENOMEM;
|
|
zcrypt_device_status_mask(device_status);
|
|
if (copy_to_user((char __user *) arg, device_status,
|
|
total_size))
|
|
rc = -EFAULT;
|
|
kfree(device_status);
|
|
return rc;
|
|
}
|
|
case Z90STAT_STATUS_MASK: {
|
|
/* the old ioctl supports only 64 adapters */
|
|
char status[MAX_ZDEV_CARDIDS];
|
|
|
|
zcrypt_status_mask(status, MAX_ZDEV_CARDIDS);
|
|
if (copy_to_user((char __user *) arg, status, sizeof(status)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
case Z90STAT_QDEPTH_MASK: {
|
|
/* the old ioctl supports only 64 adapters */
|
|
char qdepth[MAX_ZDEV_CARDIDS];
|
|
|
|
zcrypt_qdepth_mask(qdepth, MAX_ZDEV_CARDIDS);
|
|
if (copy_to_user((char __user *) arg, qdepth, sizeof(qdepth)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
case Z90STAT_PERDEV_REQCNT: {
|
|
/* the old ioctl supports only 64 adapters */
|
|
int reqcnt[MAX_ZDEV_CARDIDS];
|
|
|
|
zcrypt_perdev_reqcnt(reqcnt, MAX_ZDEV_CARDIDS);
|
|
if (copy_to_user((int __user *) arg, reqcnt, sizeof(reqcnt)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
/* unknown ioctl number */
|
|
default:
|
|
ZCRYPT_DBF(DBF_DEBUG, "unknown ioctl 0x%08x\n", cmd);
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
/*
|
|
* ioctl32 conversion routines
|
|
*/
|
|
struct compat_ica_rsa_modexpo {
|
|
compat_uptr_t inputdata;
|
|
unsigned int inputdatalength;
|
|
compat_uptr_t outputdata;
|
|
unsigned int outputdatalength;
|
|
compat_uptr_t b_key;
|
|
compat_uptr_t n_modulus;
|
|
};
|
|
|
|
static long trans_modexpo32(struct ap_perms *perms, struct file *filp,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct compat_ica_rsa_modexpo __user *umex32 = compat_ptr(arg);
|
|
struct compat_ica_rsa_modexpo mex32;
|
|
struct ica_rsa_modexpo mex64;
|
|
long rc;
|
|
|
|
if (copy_from_user(&mex32, umex32, sizeof(mex32)))
|
|
return -EFAULT;
|
|
mex64.inputdata = compat_ptr(mex32.inputdata);
|
|
mex64.inputdatalength = mex32.inputdatalength;
|
|
mex64.outputdata = compat_ptr(mex32.outputdata);
|
|
mex64.outputdatalength = mex32.outputdatalength;
|
|
mex64.b_key = compat_ptr(mex32.b_key);
|
|
mex64.n_modulus = compat_ptr(mex32.n_modulus);
|
|
do {
|
|
rc = zcrypt_rsa_modexpo(perms, &mex64);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = zcrypt_rsa_modexpo(perms, &mex64);
|
|
} while (rc == -EAGAIN);
|
|
if (rc)
|
|
return rc;
|
|
return put_user(mex64.outputdatalength,
|
|
&umex32->outputdatalength);
|
|
}
|
|
|
|
struct compat_ica_rsa_modexpo_crt {
|
|
compat_uptr_t inputdata;
|
|
unsigned int inputdatalength;
|
|
compat_uptr_t outputdata;
|
|
unsigned int outputdatalength;
|
|
compat_uptr_t bp_key;
|
|
compat_uptr_t bq_key;
|
|
compat_uptr_t np_prime;
|
|
compat_uptr_t nq_prime;
|
|
compat_uptr_t u_mult_inv;
|
|
};
|
|
|
|
static long trans_modexpo_crt32(struct ap_perms *perms, struct file *filp,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct compat_ica_rsa_modexpo_crt __user *ucrt32 = compat_ptr(arg);
|
|
struct compat_ica_rsa_modexpo_crt crt32;
|
|
struct ica_rsa_modexpo_crt crt64;
|
|
long rc;
|
|
|
|
if (copy_from_user(&crt32, ucrt32, sizeof(crt32)))
|
|
return -EFAULT;
|
|
crt64.inputdata = compat_ptr(crt32.inputdata);
|
|
crt64.inputdatalength = crt32.inputdatalength;
|
|
crt64.outputdata = compat_ptr(crt32.outputdata);
|
|
crt64.outputdatalength = crt32.outputdatalength;
|
|
crt64.bp_key = compat_ptr(crt32.bp_key);
|
|
crt64.bq_key = compat_ptr(crt32.bq_key);
|
|
crt64.np_prime = compat_ptr(crt32.np_prime);
|
|
crt64.nq_prime = compat_ptr(crt32.nq_prime);
|
|
crt64.u_mult_inv = compat_ptr(crt32.u_mult_inv);
|
|
do {
|
|
rc = zcrypt_rsa_crt(perms, &crt64);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = zcrypt_rsa_crt(perms, &crt64);
|
|
} while (rc == -EAGAIN);
|
|
if (rc)
|
|
return rc;
|
|
return put_user(crt64.outputdatalength,
|
|
&ucrt32->outputdatalength);
|
|
}
|
|
|
|
struct compat_ica_xcRB {
|
|
unsigned short agent_ID;
|
|
unsigned int user_defined;
|
|
unsigned short request_ID;
|
|
unsigned int request_control_blk_length;
|
|
unsigned char padding1[16 - sizeof(compat_uptr_t)];
|
|
compat_uptr_t request_control_blk_addr;
|
|
unsigned int request_data_length;
|
|
char padding2[16 - sizeof(compat_uptr_t)];
|
|
compat_uptr_t request_data_address;
|
|
unsigned int reply_control_blk_length;
|
|
char padding3[16 - sizeof(compat_uptr_t)];
|
|
compat_uptr_t reply_control_blk_addr;
|
|
unsigned int reply_data_length;
|
|
char padding4[16 - sizeof(compat_uptr_t)];
|
|
compat_uptr_t reply_data_addr;
|
|
unsigned short priority_window;
|
|
unsigned int status;
|
|
} __packed;
|
|
|
|
static long trans_xcRB32(struct ap_perms *perms, struct file *filp,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct compat_ica_xcRB __user *uxcRB32 = compat_ptr(arg);
|
|
struct compat_ica_xcRB xcRB32;
|
|
struct ica_xcRB xcRB64;
|
|
long rc;
|
|
|
|
if (copy_from_user(&xcRB32, uxcRB32, sizeof(xcRB32)))
|
|
return -EFAULT;
|
|
xcRB64.agent_ID = xcRB32.agent_ID;
|
|
xcRB64.user_defined = xcRB32.user_defined;
|
|
xcRB64.request_ID = xcRB32.request_ID;
|
|
xcRB64.request_control_blk_length =
|
|
xcRB32.request_control_blk_length;
|
|
xcRB64.request_control_blk_addr =
|
|
compat_ptr(xcRB32.request_control_blk_addr);
|
|
xcRB64.request_data_length =
|
|
xcRB32.request_data_length;
|
|
xcRB64.request_data_address =
|
|
compat_ptr(xcRB32.request_data_address);
|
|
xcRB64.reply_control_blk_length =
|
|
xcRB32.reply_control_blk_length;
|
|
xcRB64.reply_control_blk_addr =
|
|
compat_ptr(xcRB32.reply_control_blk_addr);
|
|
xcRB64.reply_data_length = xcRB32.reply_data_length;
|
|
xcRB64.reply_data_addr =
|
|
compat_ptr(xcRB32.reply_data_addr);
|
|
xcRB64.priority_window = xcRB32.priority_window;
|
|
xcRB64.status = xcRB32.status;
|
|
do {
|
|
rc = _zcrypt_send_cprb(perms, &xcRB64);
|
|
} while (rc == -EAGAIN);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
do {
|
|
rc = _zcrypt_send_cprb(perms, &xcRB64);
|
|
} while (rc == -EAGAIN);
|
|
xcRB32.reply_control_blk_length = xcRB64.reply_control_blk_length;
|
|
xcRB32.reply_data_length = xcRB64.reply_data_length;
|
|
xcRB32.status = xcRB64.status;
|
|
if (copy_to_user(uxcRB32, &xcRB32, sizeof(xcRB32)))
|
|
return -EFAULT;
|
|
return rc;
|
|
}
|
|
|
|
static long zcrypt_compat_ioctl(struct file *filp, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
int rc;
|
|
struct ap_perms *perms =
|
|
(struct ap_perms *) filp->private_data;
|
|
|
|
rc = zcrypt_check_ioctl(perms, cmd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (cmd == ICARSAMODEXPO)
|
|
return trans_modexpo32(perms, filp, cmd, arg);
|
|
if (cmd == ICARSACRT)
|
|
return trans_modexpo_crt32(perms, filp, cmd, arg);
|
|
if (cmd == ZSECSENDCPRB)
|
|
return trans_xcRB32(perms, filp, cmd, arg);
|
|
return zcrypt_unlocked_ioctl(filp, cmd, arg);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Misc device file operations.
|
|
*/
|
|
static const struct file_operations zcrypt_fops = {
|
|
.owner = THIS_MODULE,
|
|
.read = zcrypt_read,
|
|
.write = zcrypt_write,
|
|
.unlocked_ioctl = zcrypt_unlocked_ioctl,
|
|
#ifdef CONFIG_COMPAT
|
|
.compat_ioctl = zcrypt_compat_ioctl,
|
|
#endif
|
|
.open = zcrypt_open,
|
|
.release = zcrypt_release,
|
|
.llseek = no_llseek,
|
|
};
|
|
|
|
/*
|
|
* Misc device.
|
|
*/
|
|
static struct miscdevice zcrypt_misc_device = {
|
|
.minor = MISC_DYNAMIC_MINOR,
|
|
.name = "z90crypt",
|
|
.fops = &zcrypt_fops,
|
|
};
|
|
|
|
static int zcrypt_rng_device_count;
|
|
static u32 *zcrypt_rng_buffer;
|
|
static int zcrypt_rng_buffer_index;
|
|
static DEFINE_MUTEX(zcrypt_rng_mutex);
|
|
|
|
static int zcrypt_rng_data_read(struct hwrng *rng, u32 *data)
|
|
{
|
|
int rc;
|
|
|
|
/*
|
|
* We don't need locking here because the RNG API guarantees serialized
|
|
* read method calls.
|
|
*/
|
|
if (zcrypt_rng_buffer_index == 0) {
|
|
rc = zcrypt_rng((char *) zcrypt_rng_buffer);
|
|
/* on failure: retry once again after a requested rescan */
|
|
if ((rc == -ENODEV) && (zcrypt_process_rescan()))
|
|
rc = zcrypt_rng((char *) zcrypt_rng_buffer);
|
|
if (rc < 0)
|
|
return -EIO;
|
|
zcrypt_rng_buffer_index = rc / sizeof(*data);
|
|
}
|
|
*data = zcrypt_rng_buffer[--zcrypt_rng_buffer_index];
|
|
return sizeof(*data);
|
|
}
|
|
|
|
static struct hwrng zcrypt_rng_dev = {
|
|
.name = "zcrypt",
|
|
.data_read = zcrypt_rng_data_read,
|
|
.quality = 990,
|
|
};
|
|
|
|
int zcrypt_rng_device_add(void)
|
|
{
|
|
int rc = 0;
|
|
|
|
mutex_lock(&zcrypt_rng_mutex);
|
|
if (zcrypt_rng_device_count == 0) {
|
|
zcrypt_rng_buffer = (u32 *) get_zeroed_page(GFP_KERNEL);
|
|
if (!zcrypt_rng_buffer) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
zcrypt_rng_buffer_index = 0;
|
|
if (!zcrypt_hwrng_seed)
|
|
zcrypt_rng_dev.quality = 0;
|
|
rc = hwrng_register(&zcrypt_rng_dev);
|
|
if (rc)
|
|
goto out_free;
|
|
zcrypt_rng_device_count = 1;
|
|
} else
|
|
zcrypt_rng_device_count++;
|
|
mutex_unlock(&zcrypt_rng_mutex);
|
|
return 0;
|
|
|
|
out_free:
|
|
free_page((unsigned long) zcrypt_rng_buffer);
|
|
out:
|
|
mutex_unlock(&zcrypt_rng_mutex);
|
|
return rc;
|
|
}
|
|
|
|
void zcrypt_rng_device_remove(void)
|
|
{
|
|
mutex_lock(&zcrypt_rng_mutex);
|
|
zcrypt_rng_device_count--;
|
|
if (zcrypt_rng_device_count == 0) {
|
|
hwrng_unregister(&zcrypt_rng_dev);
|
|
free_page((unsigned long) zcrypt_rng_buffer);
|
|
}
|
|
mutex_unlock(&zcrypt_rng_mutex);
|
|
}
|
|
|
|
int __init zcrypt_debug_init(void)
|
|
{
|
|
zcrypt_dbf_info = debug_register("zcrypt", 1, 1,
|
|
DBF_MAX_SPRINTF_ARGS * sizeof(long));
|
|
debug_register_view(zcrypt_dbf_info, &debug_sprintf_view);
|
|
debug_set_level(zcrypt_dbf_info, DBF_ERR);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void zcrypt_debug_exit(void)
|
|
{
|
|
debug_unregister(zcrypt_dbf_info);
|
|
}
|
|
|
|
#ifdef CONFIG_ZCRYPT_MULTIDEVNODES
|
|
|
|
static int __init zcdn_init(void)
|
|
{
|
|
int rc;
|
|
|
|
/* create a new class 'zcrypt' */
|
|
zcrypt_class = class_create(THIS_MODULE, ZCRYPT_NAME);
|
|
if (IS_ERR(zcrypt_class)) {
|
|
rc = PTR_ERR(zcrypt_class);
|
|
goto out_class_create_failed;
|
|
}
|
|
zcrypt_class->dev_release = zcdn_device_release;
|
|
|
|
/* alloc device minor range */
|
|
rc = alloc_chrdev_region(&zcrypt_devt,
|
|
0, ZCRYPT_MAX_MINOR_NODES,
|
|
ZCRYPT_NAME);
|
|
if (rc)
|
|
goto out_alloc_chrdev_failed;
|
|
|
|
cdev_init(&zcrypt_cdev, &zcrypt_fops);
|
|
zcrypt_cdev.owner = THIS_MODULE;
|
|
rc = cdev_add(&zcrypt_cdev, zcrypt_devt, ZCRYPT_MAX_MINOR_NODES);
|
|
if (rc)
|
|
goto out_cdev_add_failed;
|
|
|
|
/* need some class specific sysfs attributes */
|
|
rc = class_create_file(zcrypt_class, &class_attr_zcdn_create);
|
|
if (rc)
|
|
goto out_class_create_file_1_failed;
|
|
rc = class_create_file(zcrypt_class, &class_attr_zcdn_destroy);
|
|
if (rc)
|
|
goto out_class_create_file_2_failed;
|
|
|
|
return 0;
|
|
|
|
out_class_create_file_2_failed:
|
|
class_remove_file(zcrypt_class, &class_attr_zcdn_create);
|
|
out_class_create_file_1_failed:
|
|
cdev_del(&zcrypt_cdev);
|
|
out_cdev_add_failed:
|
|
unregister_chrdev_region(zcrypt_devt, ZCRYPT_MAX_MINOR_NODES);
|
|
out_alloc_chrdev_failed:
|
|
class_destroy(zcrypt_class);
|
|
out_class_create_failed:
|
|
return rc;
|
|
}
|
|
|
|
static void zcdn_exit(void)
|
|
{
|
|
class_remove_file(zcrypt_class, &class_attr_zcdn_create);
|
|
class_remove_file(zcrypt_class, &class_attr_zcdn_destroy);
|
|
zcdn_destroy_all();
|
|
cdev_del(&zcrypt_cdev);
|
|
unregister_chrdev_region(zcrypt_devt, ZCRYPT_MAX_MINOR_NODES);
|
|
class_destroy(zcrypt_class);
|
|
}
|
|
|
|
#endif
|
|
|
|
/**
|
|
* zcrypt_api_init(): Module initialization.
|
|
*
|
|
* The module initialization code.
|
|
*/
|
|
int __init zcrypt_api_init(void)
|
|
{
|
|
int rc;
|
|
|
|
rc = zcrypt_debug_init();
|
|
if (rc)
|
|
goto out;
|
|
|
|
#ifdef CONFIG_ZCRYPT_MULTIDEVNODES
|
|
rc = zcdn_init();
|
|
if (rc)
|
|
goto out;
|
|
#endif
|
|
|
|
/* Register the request sprayer. */
|
|
rc = misc_register(&zcrypt_misc_device);
|
|
if (rc < 0)
|
|
goto out_misc_register_failed;
|
|
|
|
zcrypt_msgtype6_init();
|
|
zcrypt_msgtype50_init();
|
|
|
|
return 0;
|
|
|
|
out_misc_register_failed:
|
|
#ifdef CONFIG_ZCRYPT_MULTIDEVNODES
|
|
zcdn_exit();
|
|
#endif
|
|
zcrypt_debug_exit();
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* zcrypt_api_exit(): Module termination.
|
|
*
|
|
* The module termination code.
|
|
*/
|
|
void __exit zcrypt_api_exit(void)
|
|
{
|
|
#ifdef CONFIG_ZCRYPT_MULTIDEVNODES
|
|
zcdn_exit();
|
|
#endif
|
|
misc_deregister(&zcrypt_misc_device);
|
|
zcrypt_msgtype6_exit();
|
|
zcrypt_msgtype50_exit();
|
|
zcrypt_debug_exit();
|
|
}
|
|
|
|
module_init(zcrypt_api_init);
|
|
module_exit(zcrypt_api_exit);
|