diff options
| -rw-r--r-- | drivers/s390/crypto/zcrypt_msgtype6.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/s390/crypto/zcrypt_msgtype6.c b/drivers/s390/crypto/zcrypt_msgtype6.c index 98755b57104f..be3f46a014f4 100644 --- a/drivers/s390/crypto/zcrypt_msgtype6.c +++ b/drivers/s390/crypto/zcrypt_msgtype6.c @@ -1197,6 +1197,21 @@ static long zcrypt_msgtype6_send_cprb(bool userspace, struct zcrypt_queue *zq, { int rc; struct response_type *rtype = (struct response_type *)(ap_msg->private); + struct { + struct type6_hdr hdr; + struct CPRBX cprbx; + /* ... more data blocks ... */ + } __packed * msg = ap_msg->msg; + + /* + * Set the queue's reply buffer length minus 128 byte padding + * as reply limit for the card firmware. + */ + msg->hdr.FromCardLen1 = min_t(unsigned int, msg->hdr.FromCardLen1, + zq->reply.bufsize - 128); + if (msg->hdr.FromCardLen2) + msg->hdr.FromCardLen2 = + zq->reply.bufsize - msg->hdr.FromCardLen1 - 128; init_completion(&rtype->work); rc = ap_queue_message(zq->queue, ap_msg); @@ -1277,7 +1292,6 @@ static long zcrypt_msgtype6_send_ep11_cprb(bool userspace, struct zcrypt_queue * unsigned int dom_val; /* domain id */ } __packed * payload_hdr = NULL; - /* * The target domain field within the cprb body/payload block will be * replaced by the usage domain for non-management commands only. @@ -1309,6 +1323,13 @@ static long zcrypt_msgtype6_send_ep11_cprb(bool userspace, struct zcrypt_queue * AP_QID_QUEUE(zq->queue->qid); } + /* + * Set the queue's reply buffer length minus the two prepend headers + * as reply limit for the card firmware. + */ + msg->hdr.FromCardLen1 = zq->reply.bufsize - + sizeof(struct type86_hdr) - sizeof(struct type86_fmt2_ext); + init_completion(&rtype->work); rc = ap_queue_message(zq->queue, ap_msg); if (rc) |