linux-kernel - RE: [RFC v1 1/2] crypto/virtio-crypto: Read crypto services and algorithm masks

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Date:   Mon, 11 Jun 2018 06:43:01 +0000
From:   "Gonglei (Arei)" <arei.gonglei@...wei.com>
To:     Farhan Ali <alifm@...ux.ibm.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>
CC:     "mst@...hat.com" <mst@...hat.com>,
        "qemu-devel@...gnu.org" <qemu-devel@...gnu.org>,
        longpeng <longpeng2@...wei.com>,
        "pasic@...ux.ibm.com" <pasic@...ux.ibm.com>,
        "frankja@...ux.ibm.com" <frankja@...ux.ibm.com>,
        "borntraeger@...ibm.com" <borntraeger@...ibm.com>
Subject: RE: [RFC v1 1/2] crypto/virtio-crypto: Read crypto services and
 algorithm masks


> -----Original Message-----
> From: Farhan Ali [mailto:alifm@...ux.ibm.com]
> Sent: Saturday, June 09, 2018 3:09 AM
> To: linux-kernel@...r.kernel.org; kvm@...r.kernel.org
> Cc: mst@...hat.com; qemu-devel@...gnu.org; Gonglei (Arei)
> <arei.gonglei@...wei.com>; longpeng <longpeng2@...wei.com>;
> pasic@...ux.ibm.com; frankja@...ux.ibm.com; borntraeger@...ibm.com;
> alifm@...ux.ibm.com
> Subject: [RFC v1 1/2] crypto/virtio-crypto: 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@...ux.ibm.com>
> ---
>  drivers/crypto/virtio/virtio_crypto_common.h | 14 ++++++++++++++
>  drivers/crypto/virtio/virtio_crypto_core.c   | 29
> ++++++++++++++++++++++++++++
>  2 files changed, 43 insertions(+)
> 
> diff --git a/drivers/crypto/virtio/virtio_crypto_common.h
> b/drivers/crypto/virtio/virtio_crypto_common.h
> index 66501a5..05eca12e 100644
> --- a/drivers/crypto/virtio/virtio_crypto_common.h
> +++ b/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_* above
> +	 */

Pls update the above comments. Except that:

Acked-by: Gonglei <arei.gonglei@...wei.com>

> +	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 */
> diff --git a/drivers/crypto/virtio/virtio_crypto_core.c
> b/drivers/crypto/virtio/virtio_crypto_core.c
> index 8332698..8f745f2 100644
> --- a/drivers/crypto/virtio/virtio_crypto_core.c
> +++ b/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",
> --
> 2.7.4