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

[Farhan Ali]

Hi Arei

On 06/11/2018 02:43 AM, Gonglei (Arei) wrote:
> > -----Original Message-----
> > From: Farhan Ali [mailto:alifm@xxxxxxxxxxxxx]
> > Sent: Saturday, June 09, 2018 3:09 AM
> > To: linux-kernel@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx
> > Cc: mst@xxxxxxxxxx; qemu-devel@xxxxxxxxxx; Gonglei (Arei)
> > <arei.gonglei@xxxxxxxxxx>; longpeng <longpeng2@xxxxxxxxxx>;
> > pasic@xxxxxxxxxxxxx; frankja@xxxxxxxxxxxxx; borntraeger@xxxxxxxxxx;
> > alifm@xxxxxxxxxxxxx
> > 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@xxxxxxxxxxxxx>
> > ---
> >   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@xxxxxxxxxx>

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