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crypto: virtio - Register an algo only if it's supported

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Register a crypto algo with the Linux crypto layer only if
the algorithm is supported by the backend virtio-crypto
device.

Also route crypto requests to a virtio-crypto
device, only if it can support the requested service and
algorithm.

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>
This commit is contained in:
Farhan Ali
2018-06-19 11:41:34 -04:00
committed by Herbert Xu
parent b551bac14a
commit d0d859bb87
3 changed files with 159 additions and 45 deletions
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11
drivers/crypto/virtio/virtio_crypto_common.h
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@@ -116,7 +116,12 @@ int virtcrypto_dev_in_use(struct virtio_crypto *vcrypto_dev);
int virtcrypto_dev_get(struct virtio_crypto *vcrypto_dev);
void virtcrypto_dev_put(struct virtio_crypto *vcrypto_dev);
int virtcrypto_dev_started(struct virtio_crypto *vcrypto_dev);
struct virtio_crypto *virtcrypto_get_dev_node(int node);
bool virtcrypto_algo_is_supported(struct virtio_crypto *vcrypto_dev,
uint32_t service,
uint32_t algo);
struct virtio_crypto *virtcrypto_get_dev_node(int node,
uint32_t service,
uint32_t algo);
int virtcrypto_dev_start(struct virtio_crypto *vcrypto);
void virtcrypto_dev_stop(struct virtio_crypto *vcrypto);
int virtio_crypto_ablkcipher_crypt_req(
@@ -136,7 +141,7 @@ static inline int virtio_crypto_get_current_node(void)
return node;
}
int virtio_crypto_algs_register(void);
void virtio_crypto_algs_unregister(void);
int virtio_crypto_algs_register(struct virtio_crypto *vcrypto);
void virtio_crypto_algs_unregister(struct virtio_crypto *vcrypto);
#endif /* _VIRTIO_CRYPTO_COMMON_H */