drivers/crypto/ccp/ccp-crypto-aes.c

Source file repositories/reference/linux-study-clean/drivers/crypto/ccp/ccp-crypto-aes.c

File Facts

System
Linux kernel
Corpus path
drivers/crypto/ccp/ccp-crypto-aes.c
Extension
.c
Size
8761 bytes
Lines
344
Domain
Driver Families
Bucket
drivers/crypto
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct ccp_aes_def {
	enum ccp_aes_mode mode;
	unsigned int version;
	const char *name;
	const char *driver_name;
	unsigned int blocksize;
	unsigned int ivsize;
	const struct skcipher_alg *alg_defaults;
};

static struct ccp_aes_def aes_algs[] = {
	{
		.mode		= CCP_AES_MODE_ECB,
		.version	= CCP_VERSION(3, 0),
		.name		= "ecb(aes)",
		.driver_name	= "ecb-aes-ccp",
		.blocksize	= AES_BLOCK_SIZE,
		.ivsize		= 0,
		.alg_defaults	= &ccp_aes_defaults,
	},
	{
		.mode		= CCP_AES_MODE_CBC,
		.version	= CCP_VERSION(3, 0),
		.name		= "cbc(aes)",
		.driver_name	= "cbc-aes-ccp",
		.blocksize	= AES_BLOCK_SIZE,
		.ivsize		= AES_BLOCK_SIZE,
		.alg_defaults	= &ccp_aes_defaults,
	},
	{
		.mode		= CCP_AES_MODE_CTR,
		.version	= CCP_VERSION(3, 0),
		.name		= "ctr(aes)",
		.driver_name	= "ctr-aes-ccp",
		.blocksize	= 1,
		.ivsize		= AES_BLOCK_SIZE,
		.alg_defaults	= &ccp_aes_defaults,
	},
	{
		.mode		= CCP_AES_MODE_CTR,
		.version	= CCP_VERSION(3, 0),
		.name		= "rfc3686(ctr(aes))",
		.driver_name	= "rfc3686-ctr-aes-ccp",
		.blocksize	= 1,
		.ivsize		= CTR_RFC3686_IV_SIZE,
		.alg_defaults	= &ccp_aes_rfc3686_defaults,
	},
};

static int ccp_register_aes_alg(struct list_head *head,
				const struct ccp_aes_def *def)
{
	struct ccp_crypto_skcipher_alg *ccp_alg;
	struct skcipher_alg *alg;
	int ret;

	ccp_alg = kzalloc_obj(*ccp_alg);
	if (!ccp_alg)
		return -ENOMEM;

	INIT_LIST_HEAD(&ccp_alg->entry);

	ccp_alg->mode = def->mode;

	/* Copy the defaults and override as necessary */
	alg = &ccp_alg->alg;
	*alg = *def->alg_defaults;
	strscpy(alg->base.cra_name, def->name);
	strscpy(alg->base.cra_driver_name, def->driver_name);
	alg->base.cra_blocksize = def->blocksize;
	alg->ivsize = def->ivsize;

	ret = crypto_register_skcipher(alg);
	if (ret) {
		pr_err("%s skcipher algorithm registration error (%d)\n",
		       alg->base.cra_name, ret);
		kfree(ccp_alg);
		return ret;
	}

	list_add(&ccp_alg->entry, head);

	return 0;
}

int ccp_register_aes_algs(struct list_head *head)
{
	int i, ret;
	unsigned int ccpversion = ccp_version();

Annotation

Implementation Notes