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crypto: virtio - Refacotor virtio_crypto driver for new virito crypto services

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In current virtio crypto device driver, some common data structures and
implementations that should be used by other virtio crypto algorithms
(e.g. asymmetric crypto algorithms) introduce symmetric crypto algorithms
specific implementations.
This patch refactors these pieces of code so that they can be reused by
other virtio crypto algorithms.

Acked-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Xin Zeng <xin.zeng@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Zeng, Xin
2017-06-23 11:31:19 -04:00
committed by Herbert Xu
parent 41cdf7a453
commit d31e712302
3 changed files with 98 additions and 70 deletions
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37
drivers/crypto/virtio/virtio_crypto_core.c
View File

@@ -29,7 +29,6 @@ void
virtcrypto_clear_request(struct virtio_crypto_request *vc_req)
{
if (vc_req) {
kzfree(vc_req->iv);
kzfree(vc_req->req_data);
kfree(vc_req->sgs);
}
@@ -41,40 +40,18 @@ static void virtcrypto_dataq_callback(struct virtqueue *vq)
struct virtio_crypto_request *vc_req;
unsigned long flags;
unsigned int len;
struct ablkcipher_request *ablk_req;
int error;
unsigned int qid = vq->index;
spin_lock_irqsave(&vcrypto->data_vq[qid].lock, flags);
do {
virtqueue_disable_cb(vq);
while ((vc_req = virtqueue_get_buf(vq, &len)) != NULL) {
if (vc_req->type == VIRTIO_CRYPTO_SYM_OP_CIPHER) {
switch (vc_req->status) {
case VIRTIO_CRYPTO_OK:
error = 0;
break;
case VIRTIO_CRYPTO_INVSESS:
case VIRTIO_CRYPTO_ERR:
error = -EINVAL;
break;
case VIRTIO_CRYPTO_BADMSG:
error = -EBADMSG;
break;
default:
error = -EIO;
break;
}
ablk_req = vc_req->ablkcipher_req;
spin_unlock_irqrestore(
&vcrypto->data_vq[qid].lock, flags);
/* Finish the encrypt or decrypt process */
virtio_crypto_ablkcipher_finalize_req(vc_req,
ablk_req, error);
spin_lock_irqsave(
&vcrypto->data_vq[qid].lock, flags);
}
spin_unlock_irqrestore(
&vcrypto->data_vq[qid].lock, flags);
if (vc_req->alg_cb)
vc_req->alg_cb(vc_req, len);
spin_lock_irqsave(
&vcrypto->data_vq[qid].lock, flags);
}
} while (!virtqueue_enable_cb(vq));
spin_unlock_irqrestore(&vcrypto->data_vq[qid].lock, flags);
@@ -270,7 +247,7 @@ static int virtcrypto_update_status(struct virtio_crypto *vcrypto)
return -EPERM;
}
dev_info(&vcrypto->vdev->dev, "Accelerator is ready\n");
dev_info(&vcrypto->vdev->dev, "Accelerator device is ready\n");
} else {
virtcrypto_dev_stop(vcrypto);
dev_info(&vcrypto->vdev->dev, "Accelerator is not ready\n");