From patchwork Wed Sep 21 15:32:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Jiang X-Patchwork-Id: 12983881 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6F1454C6C for ; Wed, 21 Sep 2022 15:32:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1663774355; x=1695310355; h=subject:from:to:cc:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=A9kPBCOHx3Q8Fei0XxeNPAwiTjVQK9fJuLhMGY+8cSU=; b=PjcnRmBEcPGLTiuaI795n0wy5u5wfkG8rFJ2W1x7HNGUobykPf6HNaax iUXp6U32IpLfSPfjcLPh+KzJ38AJnDYE5d7QVhef1Z7TCiEiAR4fbd4Nt Lj/mycGhUrefJqA6PTg7t0v4K/qgNyLTlHqH/IB4Lid2UI29K8WRKR6ds nOOhTKNwIxuWHJ1HrKL0EbSo9zAblpnVzF3re0OwG7OMbi0xLAm98OZ8+ 95+HHi551mnWHFRnAOcA7wQWM+aeufqsGTUApQm7V5bBY0MpjFUpKGu89 0OOPKgY/Hg0sLJcTqgOLvg6QyQcKskaiEUiN45dKMYg5YoO78SjmOkh92 Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10477"; a="364012772" X-IronPort-AV: E=Sophos;i="5.93,333,1654585200"; d="scan'208";a="364012772" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Sep 2022 08:32:35 -0700 X-IronPort-AV: E=Sophos;i="5.93,333,1654585200"; d="scan'208";a="597034724" Received: from djiang5-desk3.ch.intel.com ([143.182.136.137]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Sep 2022 08:32:34 -0700 Subject: [PATCH v2 11/19] tools/testing/cxl: Add "Unlock" security opcode support From: Dave Jiang To: linux-cxl@vger.kernel.org Cc: nvdimm@lists.linux.dev, dan.j.williams@intel.com, bwidawsk@kernel.org, ira.weiny@intel.com, vishal.l.verma@intel.com, alison.schofield@intel.com, dave@stgolabs.net, Jonathan.Cameron@huawei.com Date: Wed, 21 Sep 2022 08:32:34 -0700 Message-ID: <166377435400.430546.5464236210021107128.stgit@djiang5-desk3.ch.intel.com> In-Reply-To: <166377414787.430546.3863229455285366312.stgit@djiang5-desk3.ch.intel.com> References: <166377414787.430546.3863229455285366312.stgit@djiang5-desk3.ch.intel.com> User-Agent: StGit/1.4 Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add support to emulate a CXL mem device support the "Unlock" operation. Signed-off-by: Dave Jiang Reviewed-by: Jonathan Cameron --- 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 b24119b0ea76..840378d239bf 100644 --- a/tools/testing/cxl/test/mem.c +++ b/tools/testing/cxl/test/mem.c @@ -314,6 +314,48 @@ 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; @@ -419,6 +461,9 @@ 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; }