From patchwork Wed Nov 30 19:22:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Jiang X-Patchwork-Id: 13060297 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 116F7C47089 for ; Wed, 30 Nov 2022 19:23:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229615AbiK3TWs (ORCPT ); Wed, 30 Nov 2022 14:22:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37380 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229736AbiK3TW2 (ORCPT ); Wed, 30 Nov 2022 14:22:28 -0500 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2AF56837E3 for ; Wed, 30 Nov 2022 11:22:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1669836148; x=1701372148; h=subject:from:to:cc:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=mC8MTnXlFgZaWBGK/TGF4NKGlJK3l0FxzrWpN2PGRYY=; b=KAwhcbmKgVcsfDg/MKepaOz9K+ifgA+qUxilBM4C2mrXkp/e03WF19K/ DLxWHT9IkcZMALKf31i0+3lU3MU5Xg5XOhdKzmUsDnK3h8xNByLVs4rFB UiDZ3CkMr4hGcJwYVePPEBgC/TQozxiS8S0MAbeYrV1aMngXSFjrlGBJk Zv08FkwmhoCqLsZiJUKOYPVC1u87aUI+r4wyVDmdhNglv8iNczWgoKV0F XbtFfSyj8HPaiqwwNWeks3EUvHGFCPR6J7pWENkTiO69VzcvhsoxcfgJr 6vjzeqsLcW6ogyfsGmCVtz8O3zGYsUhjPrP1TPgzYo3V5lNtBCfbf3w3f w==; X-IronPort-AV: E=McAfee;i="6500,9779,10547"; a="295853977" X-IronPort-AV: E=Sophos;i="5.96,207,1665471600"; d="scan'208";a="295853977" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Nov 2022 11:22:27 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10547"; a="707769012" X-IronPort-AV: E=Sophos;i="5.96,207,1665471600"; d="scan'208";a="707769012" Received: from djiang5-desk3.ch.intel.com ([143.182.136.137]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Nov 2022 11:22:27 -0800 Subject: [PATCH v7 10/20] tools/testing/cxl: Add "Unlock" security opcode support From: Dave Jiang To: linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev Cc: dan.j.williams@intel.com, ira.weiny@intel.com, vishal.l.verma@intel.com, alison.schofield@intel.com, Jonathan.Cameron@huawei.com, dave@stgolabs.net Date: Wed, 30 Nov 2022 12:22:27 -0700 Message-ID: <166983614730.2734609.2280484207184754073.stgit@djiang5-desk3.ch.intel.com> In-Reply-To: <166983606451.2734609.4050644229630259452.stgit@djiang5-desk3.ch.intel.com> References: <166983606451.2734609.4050644229630259452.stgit@djiang5-desk3.ch.intel.com> User-Agent: StGit/1.4 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org Add support to emulate a CXL mem device support the "Unlock" operation. Reviewed-by: Jonathan Cameron Signed-off-by: Dave Jiang Link: https://lore.kernel.org/r/166863352285.80269.6269349640365319098.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Dan Williams --- tools/testing/cxl/test/mem.c | 45 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c index 45c6e6d3cfbb..ddd4a17e5564 100644 --- a/tools/testing/cxl/test/mem.c +++ b/tools/testing/cxl/test/mem.c @@ -331,6 +331,48 @@ static int mock_freeze_security(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd return 0; } +static int mock_unlock_security(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd) +{ + struct cxl_mock_mem_pdata *mdata = dev_get_platdata(cxlds->dev); + + if (cmd->size_in != NVDIMM_PASSPHRASE_LEN) + return -EINVAL; + + if (cmd->size_out != 0) + return -EINVAL; + + if (mdata->security_state & CXL_PMEM_SEC_STATE_FROZEN) { + cmd->return_code = CXL_MBOX_CMD_RC_SECURITY; + return -ENXIO; + } + + if (!(mdata->security_state & CXL_PMEM_SEC_STATE_USER_PASS_SET)) { + cmd->return_code = CXL_MBOX_CMD_RC_SECURITY; + return -ENXIO; + } + + if (mdata->security_state & CXL_PMEM_SEC_STATE_USER_PLIMIT) { + cmd->return_code = CXL_MBOX_CMD_RC_SECURITY; + return -ENXIO; + } + + if (!(mdata->security_state & CXL_PMEM_SEC_STATE_LOCKED)) { + cmd->return_code = CXL_MBOX_CMD_RC_SECURITY; + return -ENXIO; + } + + if (memcmp(cmd->payload_in, mdata->user_pass, NVDIMM_PASSPHRASE_LEN)) { + if (++mdata->user_limit == PASS_TRY_LIMIT) + mdata->security_state |= CXL_PMEM_SEC_STATE_USER_PLIMIT; + cmd->return_code = CXL_MBOX_CMD_RC_PASSPHRASE; + return -ENXIO; + } + + mdata->user_limit = 0; + mdata->security_state &= ~CXL_PMEM_SEC_STATE_LOCKED; + return 0; +} + static int mock_get_lsa(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd) { struct cxl_mbox_get_lsa *get_lsa = cmd->payload_in; @@ -438,6 +480,9 @@ static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd * case CXL_MBOX_OP_FREEZE_SECURITY: rc = mock_freeze_security(cxlds, cmd); break; + case CXL_MBOX_OP_UNLOCK: + rc = mock_unlock_security(cxlds, cmd); + break; default: break; }