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

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Date:   Tue, 12 Jun 2018 13:06:35 -0400
From:   Farhan Ali <alifm@...ux.ibm.com>
To:     "Gonglei (Arei)" <arei.gonglei@...wei.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

Hi Arei

On 06/11/2018 02:43 AM, Gonglei (Arei) wrote:
> 
>> -----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>
> 

Sure will update the comment. How about " Specifies the services mask 
which the device support, * see VIRTIO_CRYPTO_SERVICE_*" ?

or should I specify the file where the VIRTIO_CRYPTO_SERVICE_* are defined?

Thanks
Farhan

>> +	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
> 
>