From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:55630 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2502416AbfJYQNB (ORCPT ); Fri, 25 Oct 2019 12:13:01 -0400 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x9PG8uVg070107 for ; Fri, 25 Oct 2019 12:13:00 -0400 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2vv46t0fea-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 25 Oct 2019 12:13:00 -0400 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 25 Oct 2019 17:12:58 +0100 From: Benjamin Block Subject: [PATCH v2 03/11] zfcp: add diagnostics buffer for exchange config data Date: Fri, 25 Oct 2019 18:12:45 +0200 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-Id: <7d8ac0a6cad403fa8f8b888693476a84e80a277b.1572018131.git.bblock@linux.ibm.com> Sender: linux-s390-owner@vger.kernel.org List-ID: To: "James E . J . Bottomley" , "Martin K . Petersen" Cc: Benjamin Block , Steffen Maier , Jens Remus , Fedor Loshakov , Peter Oberparleiter , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , linux-scsi@vger.kernel.org, linux-s390@vger.kernel.org In the same vein as the previous patch, add diagnostic data capture for the Exchange Config Data command. Reviewed-by: Steffen Maier Signed-off-by: Benjamin Block --- drivers/s390/scsi/zfcp_diag.c | 14 ++++++++++++-- drivers/s390/scsi/zfcp_diag.h | 7 +++++++ drivers/s390/scsi/zfcp_fsf.c | 9 +++++++++ 3 files changed, 28 insertions(+), 2 deletions(-) diff --git a/drivers/s390/scsi/zfcp_diag.c b/drivers/s390/scsi/zfcp_diag.c index fa1b25f3ec3c..d7d2db85b32e 100644 --- a/drivers/s390/scsi/zfcp_diag.c +++ b/drivers/s390/scsi/zfcp_diag.c @@ -34,6 +34,9 @@ */ int zfcp_diag_adapter_setup(struct zfcp_adapter *const adapter) { + /* set the timestamp so that the first test on age will always fail */ + const unsigned long initial_timestamp = + jiffies - msecs_to_jiffies(ZFCP_DIAG_MAX_AGE); struct zfcp_diag_adapter *diag; struct zfcp_diag_header *hdr; @@ -47,8 +50,15 @@ int zfcp_diag_adapter_setup(struct zfcp_adapter *const adapter) spin_lock_init(&hdr->access_lock); hdr->buffer = &diag->port_data.data; hdr->buffer_size = sizeof(diag->port_data.data); - /* set the timestamp so that the first test on age will always fail */ - hdr->timestamp = jiffies - msecs_to_jiffies(ZFCP_DIAG_MAX_AGE); + hdr->timestamp = initial_timestamp; + + /* setup header for config_data */ + hdr = &diag->config_data.header; + + spin_lock_init(&hdr->access_lock); + hdr->buffer = &diag->config_data.data; + hdr->buffer_size = sizeof(diag->config_data.data); + hdr->timestamp = initial_timestamp; adapter->diagnostics = diag; return 0; diff --git a/drivers/s390/scsi/zfcp_diag.h b/drivers/s390/scsi/zfcp_diag.h index 2a933326b6e4..a3eb21cc201d 100644 --- a/drivers/s390/scsi/zfcp_diag.h +++ b/drivers/s390/scsi/zfcp_diag.h @@ -43,12 +43,19 @@ struct zfcp_diag_header { * @port_data: data retrieved using exchange port data. * @port_data.header: header with metadata for the cache in @port_data.data. * @port_data.data: cached QTCB Bottom of command exchange port data. + * @config_data: data retrieved using exchange config data. + * @config_data.header: header with metadata for the cache in @config_data.data. + * @config_data.data: cached QTCB Bottom of command exchange config data. */ struct zfcp_diag_adapter { struct { struct zfcp_diag_header header; struct fsf_qtcb_bottom_port data; } port_data; + struct { + struct zfcp_diag_header header; + struct fsf_qtcb_bottom_config data; + } config_data; }; int zfcp_diag_adapter_setup(struct zfcp_adapter *const adapter); diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 883bbfd67a62..0fff060de5ac 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -556,6 +556,8 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) { struct zfcp_adapter *adapter = req->adapter; + struct zfcp_diag_header *const diag_hdr = + &adapter->diagnostics->config_data.header; struct fsf_qtcb *qtcb = req->qtcb; struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; struct Scsi_Host *shost = adapter->scsi_host; @@ -572,6 +574,12 @@ static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) switch (qtcb->header.fsf_status) { case FSF_GOOD: + /* + * usually we wait with an update till the cache is too old, + * but because we have the data available, update it anyway + */ + zfcp_diag_update_xdata(diag_hdr, bottom, false); + if (zfcp_fsf_exchange_config_evaluate(req)) return; @@ -587,6 +595,7 @@ static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) &adapter->status); break; case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: + zfcp_diag_update_xdata(diag_hdr, bottom, true); req->status |= ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE; fc_host_node_name(shost) = 0; -- 2.21.0