crypto: virtio - Read crypto services and algorithm masks

Read the crypto services and algorithm masks which provides
information about the services and algorithms supported by
virtio-crypto backend.
Signed-off-by: Farhan Ali <alifm@linux.ibm.com>
Acked-by: Gonglei <arei.gonglei@huawei.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/virtio/virtio_crypto_common.h

@@ -55,6 +55,20 @@ struct virtio_crypto {
 	/* Number of queue currently used by the driver */
 	u32 curr_queue;
 
+	/*
+	 * Specifies the services mask which the device support,
+	 * see VIRTIO_CRYPTO_SERVICE_*
+	 */
+	u32 crypto_services;
+
+	/* Detailed algorithms mask */
+	u32 cipher_algo_l;
+	u32 cipher_algo_h;
+	u32 hash_algo;
+	u32 mac_algo_l;
+	u32 mac_algo_h;
+	u32 aead_algo;
+
 	/* Maximum length of cipher key */
 	u32 max_cipher_key_len;
 	/* Maximum length of authenticated key */

drivers/crypto/virtio/virtio_crypto_core.c

@@ -303,6 +303,13 @@ static int virtcrypto_probe(struct virtio_device *vdev)
 	u32 max_data_queues = 0, max_cipher_key_len = 0;
 	u32 max_auth_key_len = 0;
 	u64 max_size = 0;
+	u32 cipher_algo_l = 0;
+	u32 cipher_algo_h = 0;
+	u32 hash_algo = 0;
+	u32 mac_algo_l = 0;
+	u32 mac_algo_h = 0;
+	u32 aead_algo = 0;
+	u32 crypto_services = 0;
 
 	if (!virtio_has_feature(vdev, VIRTIO_F_VERSION_1))
 		return -ENODEV;
@@ -339,6 +346,20 @@ static int virtcrypto_probe(struct virtio_device *vdev)
 		max_auth_key_len, &max_auth_key_len);
 	virtio_cread(vdev, struct virtio_crypto_config,
 		max_size, &max_size);
+	virtio_cread(vdev, struct virtio_crypto_config,
+		crypto_services, &crypto_services);
+	virtio_cread(vdev, struct virtio_crypto_config,
+		cipher_algo_l, &cipher_algo_l);
+	virtio_cread(vdev, struct virtio_crypto_config,
+		cipher_algo_h, &cipher_algo_h);
+	virtio_cread(vdev, struct virtio_crypto_config,
+		hash_algo, &hash_algo);
+	virtio_cread(vdev, struct virtio_crypto_config,
+		mac_algo_l, &mac_algo_l);
+	virtio_cread(vdev, struct virtio_crypto_config,
+		mac_algo_h, &mac_algo_h);
+	virtio_cread(vdev, struct virtio_crypto_config,
+		aead_algo, &aead_algo);
 
 	/* Add virtio crypto device to global table */
 	err = virtcrypto_devmgr_add_dev(vcrypto);
@@ -358,6 +379,14 @@ static int virtcrypto_probe(struct virtio_device *vdev)
 	vcrypto->max_cipher_key_len = max_cipher_key_len;
 	vcrypto->max_auth_key_len = max_auth_key_len;
 	vcrypto->max_size = max_size;
+	vcrypto->crypto_services = crypto_services;
+	vcrypto->cipher_algo_l = cipher_algo_l;
+	vcrypto->cipher_algo_h = cipher_algo_h;
+	vcrypto->mac_algo_l = mac_algo_l;
+	vcrypto->mac_algo_h = mac_algo_h;
+	vcrypto->hash_algo = hash_algo;
+	vcrypto->aead_algo = aead_algo;
+
 
 	dev_info(&vdev->dev,
 		"max_queues: %u, max_cipher_key_len: %u, max_auth_key_len: %u, max_size 0x%llx\n",