linux-master/crypto/api.c

348 static void crypto_exit_ops(struct crypto_tfm *tfm)
350 	const struct crypto_type *type = tfm->__crt_alg->cra_type;
352 	if (type && tfm->exit)
353 		tfm->exit(tfm);
392 	struct crypto_tfm *tfm;
396 	tfm_size = sizeof(*tfm) + crypto_ctxsize(alg, type, mask);
397 	tfm = kzalloc(tfm_size, gfp);
398 	if (tfm == NULL)
401 	tfm->__crt_alg = alg;
402 	refcount_set(&tfm->refcnt, 1);
404 	if (!tfm->exit && alg->cra_init && (err = alg->cra_init(tfm)))
410 	crypto_exit_ops(tfm);
413 	kfree(tfm);
415 	tfm = ERR_PTR(err);
417 	return tfm;
452 	struct crypto_tfm *tfm;
464 		tfm = __crypto_alloc_tfm(alg, type, mask);
465 		if (!IS_ERR(tfm))
466 			return tfm;
469 		err = PTR_ERR(tfm);
488 	struct crypto_tfm *tfm;
494 	total = tfmsize + sizeof(*tfm) + frontend->extsize(alg);
500 	tfm = (struct crypto_tfm *)(mem + tfmsize);
501 	tfm->__crt_alg = alg;
502 	tfm->node = node;
503 	refcount_set(&tfm->refcnt, 1);
512 	struct crypto_tfm *tfm;
520 	tfm = (struct crypto_tfm *)(mem + frontend->tfmsize);
522 	err = frontend->init_tfm(tfm);
526 	if (!tfm->exit && alg->cra_init && (err = alg->cra_init(tfm)))
532 	crypto_exit_ops(tfm);
547 	struct crypto_tfm *tfm;
560 	tfm = (struct crypto_tfm *)(mem + frontend->tfmsize);
561 	tfm->crt_flags = otfm->crt_flags;
562 	tfm->exit = otfm->exit;
611 	void *tfm;
623 		tfm = crypto_create_tfm_node(alg, frontend, node);
624 		if (!IS_ERR(tfm))
625 			return tfm;
628 		err = PTR_ERR(tfm);
645  *	@mem: Start of tfm slab
646  *	@tfm: Transform to free
651 void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm)
658 	if (!refcount_dec_and_test(&tfm->refcnt))
660 	alg = tfm->__crt_alg;
662 	if (!tfm->exit && alg->cra_exit)
663 		alg->cra_exit(tfm);
664 	crypto_exit_ops(tfm);