From patchwork Fri May 29 08:04:07 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Narsimhulu Musini X-Patchwork-Id: 6504801 Return-Path: X-Original-To: patchwork-linux-scsi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id EA9629F1CC for ; Fri, 29 May 2015 08:09:57 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 389C5206FF for ; Fri, 29 May 2015 08:09:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1CCA7206EC for ; Fri, 29 May 2015 08:09:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755711AbbE2IJv (ORCPT ); Fri, 29 May 2015 04:09:51 -0400 Received: from alln-iport-7.cisco.com ([173.37.142.94]:17497 "EHLO alln-iport-7.cisco.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755696AbbE2IJI (ORCPT ); Fri, 29 May 2015 04:09:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=21567; q=dns/txt; s=iport; t=1432886948; x=1434096548; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=e5k1ftKIx6dJFuuBoSLquenxgolUYj0F8IlL7jBjn10=; b=PwbkUWsM1zZWzGgg/1q5AhbFQLEO/Pn2LrY+/6CwwVPFxc+9swJ6g2xD EbWFUgOBd9iIq5JRKQWdSrkbUcc1gqNSZdBCiwvvtQSv9k5nMxib+6XYS n+NhE3+7mfR+Im9IbCXv03VB7nwm1Kw6h1CqFpf/0RdqGr3tsacbS/7xK w=; X-IronPort-AV: E=Sophos;i="5.13,515,1427760000"; d="scan'208";a="154324897" Received: from alln-core-5.cisco.com ([173.36.13.138]) by alln-iport-7.cisco.com with ESMTP; 29 May 2015 08:09:07 +0000 Received: from hishah-lnx.cisco.com (dhcp-171-71-13-47.cisco.com [171.71.13.47]) (authenticated bits=0) by alln-core-5.cisco.com (8.14.5/8.14.5) with ESMTP id t4T88vdx000900 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 29 May 2015 08:09:07 GMT From: Narsimhulu Musini To: James.Bottomley@HansenPartnership.com, linux-scsi@vger.kernel.org, hare@suse.de, boaz@plexistor.com, jthumshirn@suse.de Cc: Narsimhulu Musini , Sesidhar Baddela Subject: [PATCH v7 7/9] snic:Add sysfs entries to list stats and trace data Date: Fri, 29 May 2015 01:04:07 -0700 Message-Id: <1432886649-12034-8-git-send-email-nmusini@cisco.com> X-Mailer: git-send-email 1.8.5.4 In-Reply-To: <1432886649-12034-1-git-send-email-nmusini@cisco.com> References: <1432886649-12034-1-git-send-email-nmusini@cisco.com> X-Authenticated-User: nmusini@cisco.com Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Spam-Status: No, score=-14.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY, USER_IN_DEF_DKIM_WL autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP snic_stats.h contains stats structre definitions for various events in snic driver. snic_debugfs.c contains setup and cleanup of sysfs entries for listing stats, resetting stats, enabling/disabling trace, and listing trace data. Signed-off-by: Narsimhulu Musini Signed-off-by: Sesidhar Baddela Reviewed-by: Hannes Reinecke --- * v7 - Removed SNIC_DEBUG_FS macro, and replaced it with CONFIG_SCSI_SNIC_DEBUG_FS drivers/scsi/snic/snic_debugfs.c | 560 +++++++++++++++++++++++++++++++++++++++ drivers/scsi/snic/snic_stats.h | 123 +++++++++ 2 files changed, 683 insertions(+) create mode 100644 drivers/scsi/snic/snic_debugfs.c create mode 100644 drivers/scsi/snic/snic_stats.h diff --git a/drivers/scsi/snic/snic_debugfs.c b/drivers/scsi/snic/snic_debugfs.c new file mode 100644 index 0000000..82385eb --- /dev/null +++ b/drivers/scsi/snic/snic_debugfs.c @@ -0,0 +1,560 @@ +/* + * Copyright 2014 Cisco Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include +#include +#include + +#include "snic.h" + +/* + * snic_debugfs_init - Initialize debugfs for snic debug logging + * + * Description: + * When Debugfs is configured this routine sets up fnic debugfs + * filesystem. If not already created. this routine will crate the + * fnic directory and statistics directory for trace buffer and + * stats logging + */ + +int +snic_debugfs_init(void) +{ + int rc = -1; + struct dentry *de = NULL; + + de = debugfs_create_dir("snic", NULL); + if (!de) { + SNIC_DBG("Cannot create debugfs root\n"); + + return rc; + } + snic_glob->trc_root = de; + + de = debugfs_create_dir("statistics", snic_glob->trc_root); + if (!de) { + SNIC_DBG("Cannot create Statistics directory\n"); + + return rc; + } + snic_glob->stats_root = de; + + rc = 0; + + return rc; +} /* end of snic_debugfs_init */ + +/* + * snic_debugfs_term - Tear down debugfs intrastructure + * + * Description: + * When Debufs is configured this routine removes debugfs file system + * elements that are specific to snic + */ +void +snic_debugfs_term(void) +{ + debugfs_remove(snic_glob->stats_root); + snic_glob->stats_root = NULL; + + debugfs_remove(snic_glob->trc_root); + snic_glob->trc_root = NULL; +} + +/* + * snic_reset_stats_open - Open the reset_stats file + */ +static int +snic_reset_stats_open(struct inode *inode, struct file *filp) +{ + SNIC_BUG_ON(!inode->i_private); + filp->private_data = inode->i_private; + + return 0; +} + +/* + * snic_reset_stats_read - Read a reset_stats debugfs file + * @filp: The file pointer to read from. + * @ubuf: The buffer tocopy the data to. + * @cnt: The number of bytes to read. + * @ppos: The position in the file to start reading frm. + * + * Description: + * This routine reads value of variable reset_stats + * and stores into local @buf. It will start reading file @ppos and + * copy up to @cnt of data to @ubuf from @buf. + * + * Returns: + * This function returns the amount of data that was read. + */ +static ssize_t +snic_reset_stats_read(struct file *filp, + char __user *ubuf, + size_t cnt, + loff_t *ppos) +{ + struct snic *snic = (struct snic *) filp->private_data; + char buf[64]; + int len; + + len = sprintf(buf, "%u\n", snic->reset_stats); + + return simple_read_from_buffer(ubuf, cnt, ppos, buf, len); +} + +/* + * snic_reset_stats_write - Write to reset_stats debugfs file + * @filp: The file pointer to write from + * @ubuf: The buffer to copy the data from. + * @cnt: The number of bytes to write. + * @ppos: The position in the file to start writing to. + * + * Description: + * This routine writes data from user buffer @ubuf to buffer @buf and + * resets cumulative stats of snic. + * + * Returns: + * This function returns the amount of data that was written. + */ +static ssize_t +snic_reset_stats_write(struct file *filp, + const char __user *ubuf, + size_t cnt, + loff_t *ppos) +{ + struct snic *snic = (struct snic *) filp->private_data; + struct snic_stats *stats = &snic->s_stats; + u64 *io_stats_p = (u64 *) &stats->io; + u64 *fw_stats_p = (u64 *) &stats->fw; + char buf[64]; + unsigned long val; + int ret; + + if (cnt >= sizeof(buf)) + return -EINVAL; + + if (copy_from_user(&buf, ubuf, cnt)) + return -EFAULT; + + buf[cnt] = '\0'; + + ret = kstrtoul(buf, 10, &val); + if (ret < 0) + return ret; + + snic->reset_stats = val; + + if (snic->reset_stats) { + /* Skip variable is used to avoid descrepancies to Num IOs + * and IO Completions stats. Skip incrementing No IO Compls + * for pending active IOs after reset_stats + */ + atomic64_set(&snic->io_cmpl_skip, + atomic64_read(&stats->io.active)); + memset(&stats->abts, 0, sizeof(struct snic_abort_stats)); + memset(&stats->reset, 0, sizeof(struct snic_reset_stats)); + memset(&stats->misc, 0, sizeof(struct snic_misc_stats)); + memset(io_stats_p+1, + 0, + sizeof(struct snic_io_stats) - sizeof(u64)); + memset(fw_stats_p+1, + 0, + sizeof(struct snic_fw_stats) - sizeof(u64)); + } + + (*ppos)++; + + SNIC_HOST_INFO(snic->shost, "Reset Op: Driver statistics.\n"); + + return cnt; +} + +static int +snic_reset_stats_release(struct inode *inode, struct file *filp) +{ + filp->private_data = NULL; + + return 0; +} + +/* + * snic_stats_show - Formats and prints per host specific driver stats. + */ +static int +snic_stats_show(struct seq_file *sfp, void *data) +{ + struct snic *snic = (struct snic *) sfp->private; + struct snic_stats *stats = &snic->s_stats; + struct timespec last_isr_tms, last_ack_tms; + u64 maxio_tm; + int i; + + /* Dump IO Stats */ + seq_printf(sfp, + "------------------------------------------\n" + "\t\t IO Statistics\n" + "------------------------------------------\n"); + + maxio_tm = (u64) atomic64_read(&stats->io.max_time); + seq_printf(sfp, + "Active IOs : %lld\n" + "Max Active IOs : %lld\n" + "Total IOs : %lld\n" + "IOs Completed : %lld\n" + "IOs Failed : %lld\n" + "IOs Not Found : %lld\n" + "Memory Alloc Failures : %lld\n" + "REQs Null : %lld\n" + "SCSI Cmd Pointers Null : %lld\n" + "Max SGL for any IO : %lld\n" + "Max IO Size : %lld Sectors\n" + "Max Queuing Time : %lld\n" + "Max Completion Time : %lld\n" + "Max IO Process Time(FW) : %lld (%u msec)\n", + (u64) atomic64_read(&stats->io.active), + (u64) atomic64_read(&stats->io.max_active), + (u64) atomic64_read(&stats->io.num_ios), + (u64) atomic64_read(&stats->io.compl), + (u64) atomic64_read(&stats->io.fail), + (u64) atomic64_read(&stats->io.io_not_found), + (u64) atomic64_read(&stats->io.alloc_fail), + (u64) atomic64_read(&stats->io.req_null), + (u64) atomic64_read(&stats->io.sc_null), + (u64) atomic64_read(&stats->io.max_sgl), + (u64) atomic64_read(&stats->io.max_io_sz), + (u64) atomic64_read(&stats->io.max_qtime), + (u64) atomic64_read(&stats->io.max_cmpl_time), + maxio_tm, + jiffies_to_msecs(maxio_tm)); + + seq_puts(sfp, "\nSGL Counters\n"); + + for (i = 0; i < SNIC_MAX_SG_DESC_CNT; i++) { + seq_printf(sfp, + "%10lld ", + (u64) atomic64_read(&stats->io.sgl_cnt[i])); + + if ((i + 1) % 8 == 0) + seq_puts(sfp, "\n"); + } + + /* Dump Abort Stats */ + seq_printf(sfp, + "\n-------------------------------------------\n" + "\t\t Abort Statistics\n" + "---------------------------------------------\n"); + + seq_printf(sfp, + "Aborts : %lld\n" + "Aborts Fail : %lld\n" + "Aborts Driver Timeout : %lld\n" + "Abort FW Timeout : %lld\n" + "Abort IO NOT Found : %lld\n", + (u64) atomic64_read(&stats->abts.num), + (u64) atomic64_read(&stats->abts.fail), + (u64) atomic64_read(&stats->abts.drv_tmo), + (u64) atomic64_read(&stats->abts.fw_tmo), + (u64) atomic64_read(&stats->abts.io_not_found)); + + /* Dump Reset Stats */ + seq_printf(sfp, + "\n-------------------------------------------\n" + "\t\t Reset Statistics\n" + "---------------------------------------------\n"); + + seq_printf(sfp, + "HBA Resets : %lld\n" + "HBA Reset Cmpls : %lld\n" + "HBA Reset Fail : %lld\n", + (u64) atomic64_read(&stats->reset.hba_resets), + (u64) atomic64_read(&stats->reset.hba_reset_cmpl), + (u64) atomic64_read(&stats->reset.hba_reset_fail)); + + /* Dump Firmware Stats */ + seq_printf(sfp, + "\n-------------------------------------------\n" + "\t\t Firmware Statistics\n" + "---------------------------------------------\n"); + + seq_printf(sfp, + "Active FW Requests : %lld\n" + "Max FW Requests : %lld\n" + "FW Out Of Resource Errs : %lld\n" + "FW IO Errors : %lld\n" + "FW SCSI Errors : %lld\n", + (u64) atomic64_read(&stats->fw.actv_reqs), + (u64) atomic64_read(&stats->fw.max_actv_reqs), + (u64) atomic64_read(&stats->fw.out_of_res), + (u64) atomic64_read(&stats->fw.io_errs), + (u64) atomic64_read(&stats->fw.scsi_errs)); + + + /* Dump Miscellenous Stats */ + seq_printf(sfp, + "\n---------------------------------------------\n" + "\t\t Other Statistics\n" + "\n---------------------------------------------\n"); + + jiffies_to_timespec(stats->misc.last_isr_time, &last_isr_tms); + jiffies_to_timespec(stats->misc.last_ack_time, &last_ack_tms); + + seq_printf(sfp, + "Last ISR Time : %llu (%8lu.%8lu)\n" + "Last Ack Time : %llu (%8lu.%8lu)\n" + "ISRs : %llu\n" + "Max CQ Entries : %lld\n" + "Data Count Mismatch : %lld\n" + "IOs w/ Timeout Status : %lld\n" + "IOs w/ Aborted Status : %lld\n" + "IOs w/ SGL Invalid Stat : %lld\n" + "WQ Desc Alloc Fail : %lld\n" + "Queue Full : %lld\n" + "Target Not Ready : %lld\n", + (u64) stats->misc.last_isr_time, + last_isr_tms.tv_sec, last_isr_tms.tv_nsec, + (u64)stats->misc.last_ack_time, + last_ack_tms.tv_sec, last_ack_tms.tv_nsec, + (u64) atomic64_read(&stats->misc.isr_cnt), + (u64) atomic64_read(&stats->misc.max_cq_ents), + (u64) atomic64_read(&stats->misc.data_cnt_mismat), + (u64) atomic64_read(&stats->misc.io_tmo), + (u64) atomic64_read(&stats->misc.io_aborted), + (u64) atomic64_read(&stats->misc.sgl_inval), + (u64) atomic64_read(&stats->misc.wq_alloc_fail), + (u64) atomic64_read(&stats->misc.qfull), + (u64) atomic64_read(&stats->misc.tgt_not_rdy)); + + return 0; +} + +/* + * snic_stats_open - Open the stats file for specific host + * + * Description: + * This routine opens a debugfs file stats of specific host + */ +static int +snic_stats_open(struct inode *inode, struct file *filp) +{ + return single_open(filp, snic_stats_show, inode->i_private); +} + +static const struct file_operations snic_stats_fops __read_mostly = { + .owner = THIS_MODULE, + .open = snic_stats_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static const struct file_operations snic_reset_stats_fops __read_mostly = { + .owner = THIS_MODULE, + .open = snic_reset_stats_open, + .read = snic_reset_stats_read, + .write = snic_reset_stats_write, + .release = snic_reset_stats_release, +}; + +/* + * snic_stats_init - Initialize stats struct and create stats file + * per snic + * + * Description: + * When debugfs is cofigured this routine sets up the stats file per snic + * It will create file stats and reset_stats under statistics/host# directory + * to log per snic stats + */ +int +snic_stats_debugfs_init(struct snic *snic) +{ + int rc = -1; + char name[16]; + struct dentry *de = NULL; + + snprintf(name, sizeof(name), "host%d", snic->shost->host_no); + if (!snic_glob->stats_root) { + SNIC_DBG("snic_stats root doesn't exist\n"); + + return rc; + } + + de = debugfs_create_dir(name, snic_glob->stats_root); + if (!de) { + SNIC_DBG("Cannot create host directory\n"); + + return rc; + } + snic->stats_host = de; + + de = debugfs_create_file("stats", + S_IFREG|S_IRUGO, + snic->stats_host, + snic, + &snic_stats_fops); + if (!de) { + SNIC_DBG("Cannot create host's stats file\n"); + + return rc; + } + snic->stats_file = de; + + de = debugfs_create_file("reset_stats", + S_IFREG|S_IRUGO|S_IWUSR, + snic->stats_host, + snic, + &snic_reset_stats_fops); + + if (!de) { + SNIC_DBG("Cannot create host's reset_stats file\n"); + + return rc; + } + snic->reset_stats_file = de; + rc = 0; + + return rc; +} /* end of snic_stats_debugfs_init */ + +/* + * snic_stats_debugfs_remove - Tear down debugfs infrastructure of stats + * + * Description: + * When Debufs is configured this routine removes debugfs file system + * elements that are specific to to snic stats + */ +void +snic_stats_debugfs_remove(struct snic *snic) +{ + debugfs_remove(snic->stats_file); + snic->stats_file = NULL; + + debugfs_remove(snic->reset_stats_file); + snic->reset_stats_file = NULL; + + debugfs_remove(snic->stats_host); + snic->stats_host = NULL; +} + +/* Trace Facility related API */ +static void * +snic_trc_seq_start(struct seq_file *sfp, loff_t *pos) +{ + return &snic_glob->trc; +} + +static void * +snic_trc_seq_next(struct seq_file *sfp, void *data, loff_t *pos) +{ + return NULL; +} + +static void +snic_trc_seq_stop(struct seq_file *sfp, void *data) +{ +} + +#define SNIC_TRC_PBLEN 256 +static int +snic_trc_seq_show(struct seq_file *sfp, void *data) +{ + char buf[SNIC_TRC_PBLEN]; + + if (snic_get_trc_data(buf, SNIC_TRC_PBLEN) > 0) + seq_printf(sfp, "%s\n", buf); + + return 0; +} + +static const struct seq_operations snic_trc_seq_ops __read_mostly = { + .start = snic_trc_seq_start, + .next = snic_trc_seq_next, + .stop = snic_trc_seq_stop, + .show = snic_trc_seq_show, +}; + +static int +snic_trc_open(struct inode *inode, struct file *filp) +{ + return seq_open(filp, &snic_trc_seq_ops); +} + +static const struct file_operations snic_trc_fops __read_mostly = { + .owner = THIS_MODULE, + .open = snic_trc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + +/* + * snic_trc_debugfs_init : creates trace/tracing_enable files for trace + * under debugfs + */ +int +snic_trc_debugfs_init(void) +{ + struct dentry *de = NULL; + int ret = -1; + + if (!snic_glob->trc_root) { + SNIC_ERR("Debugfs root directory for snic doesn't exist.\n"); + + return ret; + } + + de = debugfs_create_bool("tracing_enable", + S_IFREG | S_IRUGO | S_IWUSR, + snic_glob->trc_root, + &snic_glob->trc.enable); + + if (!de) { + SNIC_ERR("Can't create trace_enable file.\n"); + + return ret; + } + snic_glob->trc.trc_enable = de; + + de = debugfs_create_file("trace", + S_IFREG | S_IRUGO | S_IWUSR, + snic_glob->trc_root, + NULL, + &snic_trc_fops); + + if (!de) { + SNIC_ERR("Cann't create trace file.\n"); + + return ret; + } + snic_glob->trc.trc_file = de; + ret = 0; + + return ret; +} /* end of snic_trc_debugfs_init */ + +/* + * snic_trc_debugfs_term : cleans up the files created for trace under debugfs + */ +void +snic_trc_debugfs_term(void) +{ + debugfs_remove(snic_glob->trc.trc_file); + snic_glob->trc.trc_file = NULL; + + debugfs_remove(snic_glob->trc.trc_enable); + snic_glob->trc.trc_enable = NULL; +} diff --git a/drivers/scsi/snic/snic_stats.h b/drivers/scsi/snic/snic_stats.h new file mode 100644 index 0000000..11e6148 --- /dev/null +++ b/drivers/scsi/snic/snic_stats.h @@ -0,0 +1,123 @@ +/* + * Copyright 2014 Cisco Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef __SNIC_STATS_H +#define __SNIC_STATS_H + +struct snic_io_stats { + atomic64_t active; /* Active IOs */ + atomic64_t max_active; /* Max # active IOs */ + atomic64_t max_sgl; /* Max # SGLs for any IO */ + atomic64_t max_time; /* Max time to process IO */ + atomic64_t max_qtime; /* Max time to Queue the IO */ + atomic64_t max_cmpl_time; /* Max time to complete the IO */ + atomic64_t sgl_cnt[SNIC_MAX_SG_DESC_CNT]; /* SGL Counters */ + atomic64_t max_io_sz; /* Max IO Size */ + atomic64_t compl; /* IO Completions */ + atomic64_t fail; /* IO Failures */ + atomic64_t req_null; /* req or req info is NULL */ + atomic64_t alloc_fail; /* Alloc Failures */ + atomic64_t sc_null; + atomic64_t io_not_found; /* IO Not Found */ + atomic64_t num_ios; /* Number of IOs */ +}; + +struct snic_abort_stats { + atomic64_t num; /* Abort counter */ + atomic64_t fail; /* Abort Failure Counter */ + atomic64_t drv_tmo; /* Abort Driver Timeouts */ + atomic64_t fw_tmo; /* Abort Firmware Timeouts */ + atomic64_t io_not_found;/* Abort IO Not Found */ +}; + +struct snic_reset_stats { + atomic64_t dev_resets; /* Device Reset Counter */ + atomic64_t dev_reset_fail; /* Device Reset Failures */ + atomic64_t dev_reset_aborts; /* Device Reset Aborts */ + atomic64_t dev_reset_tmo; /* Device Reset Timeout */ + atomic64_t dev_reset_terms; /* Device Reset terminate */ + atomic64_t hba_resets; /* hba/firmware resets */ + atomic64_t hba_reset_cmpl; /* hba/firmware reset completions */ + atomic64_t hba_reset_fail; /* hba/firmware failures */ + atomic64_t snic_resets; /* snic resets */ + atomic64_t snic_reset_compl; /* snic reset completions */ + atomic64_t snic_reset_fail; /* snic reset failures */ +}; + +struct snic_fw_stats { + atomic64_t actv_reqs; /* Active Requests */ + atomic64_t max_actv_reqs; /* Max Active Requests */ + atomic64_t out_of_res; /* Firmware Out Of Resources */ + atomic64_t io_errs; /* Firmware IO Firmware Errors */ + atomic64_t scsi_errs; /* Target hits check condition */ +}; + +struct snic_misc_stats { + u64 last_isr_time; + u64 last_ack_time; + atomic64_t isr_cnt; + atomic64_t max_cq_ents; /* Max CQ Entries */ + atomic64_t data_cnt_mismat; /* Data Count Mismatch */ + atomic64_t io_tmo; + atomic64_t io_aborted; + atomic64_t sgl_inval; /* SGL Invalid */ + atomic64_t abts_wq_alloc_fail; /* Abort Path WQ desc alloc failure */ + atomic64_t devrst_wq_alloc_fail;/* Device Reset - WQ desc alloc fail */ + atomic64_t wq_alloc_fail; /* IO WQ desc alloc failure */ + atomic64_t no_icmnd_itmf_cmpls; + atomic64_t io_under_run; + atomic64_t qfull; + atomic64_t tgt_not_rdy; +}; + +struct snic_stats { + struct snic_io_stats io; + struct snic_abort_stats abts; + struct snic_reset_stats reset; + struct snic_fw_stats fw; + struct snic_misc_stats misc; + atomic64_t io_cmpl_skip; +}; + +int snic_stats_debugfs_init(struct snic *); +void snic_stats_debugfs_remove(struct snic *); + +/* Auxillary function to update active IO counter */ +static inline void +snic_stats_update_active_ios(struct snic_stats *s_stats) +{ + struct snic_io_stats *io = &s_stats->io; + u32 nr_active_ios; + + nr_active_ios = atomic64_inc_return(&io->active); + if (atomic64_read(&io->max_active) < nr_active_ios) + atomic64_set(&io->max_active, nr_active_ios); + + atomic64_inc(&io->num_ios); +} + +/* Auxillary function to update IO completion counter */ +static inline void +snic_stats_update_io_cmpl(struct snic_stats *s_stats) +{ + atomic64_dec(&s_stats->io.active); + if (unlikely(atomic64_read(&s_stats->io_cmpl_skip))) + atomic64_dec(&s_stats->io_cmpl_skip); + else + atomic64_inc(&s_stats->io.compl); +} +#endif /* __SNIC_STATS_H */