131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
/* Common header for Virtio crypto device.
|
|
*
|
|
* Copyright 2016 HUAWEI TECHNOLOGIES CO., LTD.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef _VIRTIO_CRYPTO_COMMON_H
|
|
#define _VIRTIO_CRYPTO_COMMON_H
|
|
|
|
#include <linux/virtio.h>
|
|
#include <linux/crypto.h>
|
|
#include <linux/spinlock.h>
|
|
#include <crypto/aead.h>
|
|
#include <crypto/aes.h>
|
|
#include <crypto/authenc.h>
|
|
#include <crypto/engine.h>
|
|
|
|
|
|
/* Internal representation of a data virtqueue */
|
|
struct data_queue {
|
|
/* Virtqueue associated with this send _queue */
|
|
struct virtqueue *vq;
|
|
|
|
/* To protect the vq operations for the dataq */
|
|
spinlock_t lock;
|
|
|
|
/* Name of the tx queue: dataq.$index */
|
|
char name[32];
|
|
|
|
struct crypto_engine *engine;
|
|
};
|
|
|
|
struct virtio_crypto {
|
|
struct virtio_device *vdev;
|
|
struct virtqueue *ctrl_vq;
|
|
struct data_queue *data_vq;
|
|
|
|
/* To protect the vq operations for the controlq */
|
|
spinlock_t ctrl_lock;
|
|
|
|
/* Maximum of data queues supported by the device */
|
|
u32 max_data_queues;
|
|
|
|
/* Number of queue currently used by the driver */
|
|
u32 curr_queue;
|
|
|
|
/* Maximum length of cipher key */
|
|
u32 max_cipher_key_len;
|
|
/* Maximum length of authenticated key */
|
|
u32 max_auth_key_len;
|
|
/* Maximum size of per request */
|
|
u64 max_size;
|
|
|
|
/* Control VQ buffers: protected by the ctrl_lock */
|
|
struct virtio_crypto_op_ctrl_req ctrl;
|
|
struct virtio_crypto_session_input input;
|
|
struct virtio_crypto_inhdr ctrl_status;
|
|
|
|
unsigned long status;
|
|
atomic_t ref_count;
|
|
struct list_head list;
|
|
struct module *owner;
|
|
uint8_t dev_id;
|
|
|
|
/* Does the affinity hint is set for virtqueues? */
|
|
bool affinity_hint_set;
|
|
};
|
|
|
|
struct virtio_crypto_sym_session_info {
|
|
/* Backend session id, which come from the host side */
|
|
__u64 session_id;
|
|
};
|
|
|
|
struct virtio_crypto_request;
|
|
typedef void (*virtio_crypto_data_callback)
|
|
(struct virtio_crypto_request *vc_req, int len);
|
|
|
|
struct virtio_crypto_request {
|
|
uint8_t status;
|
|
struct virtio_crypto_op_data_req *req_data;
|
|
struct scatterlist **sgs;
|
|
struct data_queue *dataq;
|
|
virtio_crypto_data_callback alg_cb;
|
|
};
|
|
|
|
int virtcrypto_devmgr_add_dev(struct virtio_crypto *vcrypto_dev);
|
|
struct list_head *virtcrypto_devmgr_get_head(void);
|
|
void virtcrypto_devmgr_rm_dev(struct virtio_crypto *vcrypto_dev);
|
|
struct virtio_crypto *virtcrypto_devmgr_get_first(void);
|
|
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);
|
|
int virtcrypto_dev_start(struct virtio_crypto *vcrypto);
|
|
void virtcrypto_dev_stop(struct virtio_crypto *vcrypto);
|
|
int virtio_crypto_ablkcipher_crypt_req(
|
|
struct crypto_engine *engine,
|
|
struct ablkcipher_request *req);
|
|
|
|
void
|
|
virtcrypto_clear_request(struct virtio_crypto_request *vc_req);
|
|
|
|
static inline int virtio_crypto_get_current_node(void)
|
|
{
|
|
int cpu, node;
|
|
|
|
cpu = get_cpu();
|
|
node = topology_physical_package_id(cpu);
|
|
put_cpu();
|
|
|
|
return node;
|
|
}
|
|
|
|
int virtio_crypto_algs_register(void);
|
|
void virtio_crypto_algs_unregister(void);
|
|
|
|
#endif /* _VIRTIO_CRYPTO_COMMON_H */
|