From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966058AbdEOQwd (ORCPT ); Mon, 15 May 2017 12:52:33 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:44195 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932938AbdEOQv4 (ORCPT ); Mon, 15 May 2017 12:51:56 -0400 From: Stefan Berger To: tpmdd-devel@lists.sourceforge.net, linux-security-module@vger.kernel.org, jarkko.sakkinen@linux.intel.com Cc: jgunthorpe@obsidianresearch.com, linux-kernel@vger.kernel.org, Stefan Berger Subject: [PATCH v5 1/2] tpm: Introduce flag TPM_TRANSMIT_RAW Date: Mon, 15 May 2017 12:51:44 -0400 X-Mailer: git-send-email 2.5.5 In-Reply-To: <1494867105-30722-1-git-send-email-stefanb@linux.vnet.ibm.com> References: <1494867105-30722-1-git-send-email-stefanb@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17051516-0024-0000-0000-0000026F0238 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007066; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000212; SDB=6.00860861; UDB=6.00426914; IPR=6.00640525; BA=6.00005350; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00015465; XFM=3.00000015; UTC=2017-05-15 16:51:53 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17051516-0025-0000-0000-00004401772F Message-Id: <1494867105-30722-2-git-send-email-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-05-15_09:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000 definitions=main-1705150163 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce the flag TPM_TRASNMIT_RAW that allows us to transmit a command without recursing into the requesting of locality. Signed-off-by: Stefan Berger --- drivers/char/tpm/tpm-interface.c | 3 ++- drivers/char/tpm/tpm.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index 4ed08ab..2eacda2 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -416,7 +416,8 @@ ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space, /* Store the decision as chip->locality will be changed. */ need_locality = chip->locality == -1; - if (need_locality && chip->ops->request_locality) { + if (!(flags & TPM_TRANSMIT_RAW) && + need_locality && chip->ops->request_locality) { rc = chip->ops->request_locality(chip, 0); if (rc < 0) goto out_no_locality; diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index e81d8c7..25d9858 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -525,6 +525,7 @@ extern struct idr dev_nums_idr; enum tpm_transmit_flags { TPM_TRANSMIT_UNLOCKED = BIT(0), + TPM_TRANSMIT_RAW = BIT(1), }; ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space, -- 2.4.3