Function padlock_process

freebsd/crypto/via/padlock.c:229–279

}

static int
padlock_process(device_t dev, struct cryptop *crp, int hint __unused)
{
	const struct crypto_session_params *csp;
	struct padlock_session *ses;
	int error;

	if ((crp->crp_payload_length % AES_BLOCK_LEN) != 0) {
		error = EINVAL;
		goto out;
	}

	ses = crypto_get_driver_session(crp->crp_session);
	csp = crypto_get_params(crp->crp_session);

	/* Perform data authentication if requested before decryption. */
	if (csp->csp_mode == CSP_MODE_ETA &&
	    !CRYPTO_OP_IS_ENCRYPT(crp->crp_op)) {
		error = padlock_hash_process(ses, crp, csp);
		if (error != 0)
			goto out;
	}

	error = padlock_cipher_process(ses, crp, csp);
	if (error != 0)
		goto out;

	/* Perform data authentication if requested after encryption. */
	if (csp->csp_mode == CSP_MODE_ETA &&
	    CRYPTO_OP_IS_ENCRYPT(crp->crp_op)) {
		error = padlock_hash_process(ses, crp, csp);
		if (error != 0)
			goto out;
	}

out:
#if 0
	/*
	 * This code is not necessary, because contexts will be freed on next
	 * padlock_setup_mackey() call or at padlock_freesession() call.
	 */
	if (ses != NULL && maccrd != NULL &&
	    (maccrd->crd_flags & CRD_F_KEY_EXPLICIT) != 0) {
		padlock_free_ctx(ses->ses_axf, ses->ses_ictx);
		padlock_free_ctx(ses->ses_axf, ses->ses_octx);
	}
#endif
	crp->crp_etype = error;
	crypto_done(crp);
	return (0);
}

static device_method_t padlock_methods[] = {
	DEVMETHOD(device_identify,	padlock_identify),