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Subject[PATCH v2 1/2] crypto/virtio-crypto: Read crypto services and algorithm masks
Date
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>
---
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..931a3bd 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_*
+ */
+ 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
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