static void rk_crypto_tasklet_cb(unsigned long data)
{
struct rk_crypto_info *dev = (struct rk_crypto_info *)data;
struct crypto_async_request *async_req, *backlog;
unsigned long flags;
int err = 0;
spin_lock_irqsave(&dev->lock, flags);
backlog = crypto_get_backlog(&dev->queue);
async_req = crypto_dequeue_request(&dev->queue);
spin_unlock_irqrestore(&dev->lock, flags);
if (!async_req) {
dev_err(dev->dev, "async_req is NULL !!\n");
return;
}
if (backlog) {
backlog->complete(backlog, -EINPROGRESS);
backlog = NULL;
}
if (crypto_tfm_alg_type(async_req->tfm) == CRYPTO_ALG_TYPE_ABLKCIPHER)
dev->ablk_req = ablkcipher_request_cast(async_req);
else
dev->ahash_req = ahash_request_cast(async_req);
err = dev->start(dev);
if (err)
dev->complete(dev, err);
}
int __init init_mars(void)
{
MARS_INF("init_mars()\n");
set_fake();
#ifdef MARS_TRACING
{
int flags = O_CREAT | O_TRUNC | O_RDWR | O_LARGEFILE;
int prot = 0600;
mm_segment_t oldfs;
oldfs = get_fs();
set_fs(get_ds());
mars_log_file = filp_open("/mars/trace.csv", flags, prot);
set_fs(oldfs);
if (IS_ERR(mars_log_file)) {
MARS_ERR("cannot create trace logfile, status = %ld\n", PTR_ERR(mars_log_file));
mars_log_file = NULL;
}
}
#endif
mars_tfm = crypto_alloc_hash("md5", 0, CRYPTO_ALG_ASYNC);
if (!mars_tfm) {
MARS_ERR("cannot alloc crypto hash\n");
return -ENOMEM;
}
if (IS_ERR(mars_tfm)) {
MARS_ERR("alloc crypto hash failed, status = %d\n", (int)PTR_ERR(mars_tfm));
return PTR_ERR(mars_tfm);
}
#if 0
if (crypto_tfm_alg_type(crypto_hash_tfm(mars_tfm)) != CRYPTO_ALG_TYPE_DIGEST) {
MARS_ERR("bad crypto hash type\n");
return -EINVAL;
}
#endif
mars_digest_size = crypto_hash_digestsize(mars_tfm);
MARS_INF("digest_size = %d\n", mars_digest_size);
return 0;
}
static int sahara_queue_manage(void *data)
{
struct sahara_dev *dev = (struct sahara_dev *)data;
struct crypto_async_request *async_req;
struct crypto_async_request *backlog;
int ret = 0;
do {
__set_current_state(TASK_INTERRUPTIBLE);
mutex_lock(&dev->queue_mutex);
backlog = crypto_get_backlog(&dev->queue);
async_req = crypto_dequeue_request(&dev->queue);
mutex_unlock(&dev->queue_mutex);
if (backlog)
backlog->complete(backlog, -EINPROGRESS);
if (async_req) {
if (crypto_tfm_alg_type(async_req->tfm) ==
CRYPTO_ALG_TYPE_AHASH) {
struct ahash_request *req =
ahash_request_cast(async_req);
ret = sahara_sha_process(req);
} else {
struct ablkcipher_request *req =
ablkcipher_request_cast(async_req);
ret = sahara_aes_process(req);
}
async_req->complete(async_req, ret);
continue;
}
schedule();
} while (!kthread_should_stop());
return 0;
}
