Commit a7367997 authored by Harald Freudenberger's avatar Harald Freudenberger Committed by Vasily Gorbik

s390/zcrypt: ep11 structs rework, export zcrypt_send_ep11_cprb

Minor rework for struct ep11_cprb and struct ep11_urb. Use of u8, u16,
u32 instead of unsigned char. Declare pointers to mem from userspace
with __user to give sparse a chance to check.

Export zcrypt_send_ep11_cprb() function as this function will be
called by code in progress which will build ep11 cprbs within the
zcrypt device driver zoo and send them to EP11 crypto cards.
Signed-off-by: default avatarHarald Freudenberger <freude@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 8f291ebf
......@@ -161,17 +161,17 @@ struct ica_xcRB {
* @payload_len: Payload length
*/
struct ep11_cprb {
__u16 cprb_len;
unsigned char cprb_ver_id;
unsigned char pad_000[2];
unsigned char flags;
unsigned char func_id[2];
__u32 source_id;
__u32 target_id;
__u32 ret_code;
__u32 reserved1;
__u32 reserved2;
__u32 payload_len;
__u16 cprb_len;
__u8 cprb_ver_id;
__u8 pad_000[2];
__u8 flags;
__u8 func_id[2];
__u32 source_id;
__u32 target_id;
__u32 ret_code;
__u32 reserved1;
__u32 reserved2;
__u32 payload_len;
} __attribute__((packed));
/**
......@@ -197,13 +197,13 @@ struct ep11_target_dev {
*/
struct ep11_urb {
__u16 targets_num;
__u64 targets;
__u8 __user *targets;
__u64 weight;
__u64 req_no;
__u64 req_len;
__u64 req;
__u8 __user *req;
__u64 resp_len;
__u64 resp;
__u8 __user *resp;
} __attribute__((packed));
/**
......
......@@ -923,8 +923,8 @@ static bool is_desired_ep11_queue(unsigned int dev_qid,
return false;
}
static long zcrypt_send_ep11_cprb(struct ap_perms *perms,
struct ep11_urb *xcrb)
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;
......@@ -1029,6 +1029,12 @@ static long zcrypt_send_ep11_cprb(struct ap_perms *perms,
return rc;
}
long zcrypt_send_ep11_cprb(struct ep11_urb *xcrb)
{
return _zcrypt_send_ep11_cprb(&ap_perms, xcrb);
}
EXPORT_SYMBOL(zcrypt_send_ep11_cprb);
static long zcrypt_rng(char *buffer)
{
struct zcrypt_card *zc, *pref_zc;
......@@ -1369,12 +1375,12 @@ static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd,
if (copy_from_user(&xcrb, uxcrb, sizeof(xcrb)))
return -EFAULT;
do {
rc = zcrypt_send_ep11_cprb(perms, &xcrb);
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);
rc = _zcrypt_send_ep11_cprb(perms, &xcrb);
} while (rc == -EAGAIN);
if (rc)
ZCRYPT_DBF(DBF_DEBUG, "ioctl ZSENDEP11CPRB rc=%d\n", rc);
......
......@@ -140,6 +140,7 @@ struct zcrypt_ops *zcrypt_msgtype(unsigned char *, int);
int zcrypt_api_init(void);
void zcrypt_api_exit(void);
long zcrypt_send_cprb(struct ica_xcRB *xcRB);
long zcrypt_send_ep11_cprb(struct ep11_urb *urb);
void zcrypt_device_status_mask_ext(struct zcrypt_device_status_ext *devstatus);
int zcrypt_device_status_ext(int card, int queue,
struct zcrypt_device_status_ext *devstatus);
......
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