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Subject[RFC-v2 04/12] iscsi-target: Add configfs fabric dependent statistics
Date
From: Nicholas Bellinger <nab@linux-iscsi.org>

This patch adds support for iSCSI fabric dependent configfs statistics
using TCM v4 default statistics groups.

Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
---
drivers/target/iscsi/iscsi_target_stat.c | 955 ++++++++++++++++++++++++++++++
drivers/target/iscsi/iscsi_target_stat.h | 79 +++
2 files changed, 1034 insertions(+), 0 deletions(-)
create mode 100644 drivers/target/iscsi/iscsi_target_stat.c
create mode 100644 drivers/target/iscsi/iscsi_target_stat.h
diff --git a/drivers/target/iscsi/iscsi_target_stat.c b/drivers/target/iscsi/iscsi_target_stat.c
new file mode 100644
index 0000000..3a83bb7
--- /dev/null
+++ b/drivers/target/iscsi/iscsi_target_stat.c
@@ -0,0 +1,955 @@
+/*******************************************************************************
+ * Modern ConfigFS group context specific iSCSI statistics based on original
+ * iscsi_target_mib.c code
+ *
+ * Copyright (c) 2011 Rising Tide Systems
+ *
+ * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
+ *
+ * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ ******************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <generated/utsrelease.h>
+#include <linux/utsname.h>
+#include <linux/configfs.h>
+#include <scsi/iscsi_proto.h>
+#include <target/target_core_base.h>
+#include <target/target_core_transport.h>
+#include <target/configfs_macros.h>
+
+#include "iscsi_target_core.h"
+#include "iscsi_parameters.h"
+#include "iscsi_target_device.h"
+#include "iscsi_target_tpg.h"
+#include "iscsi_target_util.h"
+#include "iscsi_target_stat.h"
+
+#ifndef INITIAL_JIFFIES
+#define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ))
+#endif
+
+/* Instance Attributes Table */
+#define ISCSI_INST_NUM_NODES 1
+#define ISCSI_INST_DESCR "Storage Engine Target"
+#define ISCSI_INST_LAST_FAILURE_TYPE 0
+#define ISCSI_DISCONTINUITY_TIME 0
+
+#define ISCSI_NODE_INDEX 1
+
+#define ISPRINT(a) ((a >= ' ') && (a <= '~'))
+
+/****************************************************************************
+ * iSCSI MIB Tables
+ ****************************************************************************/
+/*
+ * Instance Attributes Table
+ */
+CONFIGFS_EATTR_STRUCT(iscsi_stat_instance, iscsi_wwn_stat_grps);
+#define ISCSI_STAT_INSTANCE_ATTR(_name, _mode) \
+static struct iscsi_stat_instance_attribute \
+ iscsi_stat_instance_##_name = \
+ __CONFIGFS_EATTR(_name, _mode, \
+ iscsi_stat_instance_show_attr_##_name, \
+ iscsi_stat_instance_store_attr_##_name);
+
+#define ISCSI_STAT_INSTANCE_ATTR_RO(_name) \
+static struct iscsi_stat_instance_attribute \
+ iscsi_stat_instance_##_name = \
+ __CONFIGFS_EATTR_RO(_name, \
+ iscsi_stat_instance_show_attr_##_name);
+
+static ssize_t iscsi_stat_instance_show_attr_inst(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+
+ return snprintf(page, PAGE_SIZE, "%u\n", tiqn->tiqn_index);
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(inst);
+
+static ssize_t iscsi_stat_instance_show_attr_min_ver(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_DRAFT20_VERSION);
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(min_ver);
+
+static ssize_t iscsi_stat_instance_show_attr_max_ver(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_DRAFT20_VERSION);
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(max_ver);
+
+static ssize_t iscsi_stat_instance_show_attr_portals(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+
+ return snprintf(page, PAGE_SIZE, "%u\n", tiqn->tiqn_num_tpg_nps);
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(portals);
+
+static ssize_t iscsi_stat_instance_show_attr_nodes(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_INST_NUM_NODES);
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(nodes);
+
+static ssize_t iscsi_stat_instance_show_attr_sessions(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+
+ return snprintf(page, PAGE_SIZE, "%u\n", tiqn->tiqn_nsessions);
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(sessions);
+
+static ssize_t iscsi_stat_instance_show_attr_fail_sess(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_sess_err_stats *sess_err = &tiqn->sess_err_stats;
+ u32 sess_err_count;
+
+ spin_lock_bh(&sess_err->lock);
+ sess_err_count = (sess_err->digest_errors +
+ sess_err->cxn_timeout_errors +
+ sess_err->pdu_format_errors);
+ spin_unlock_bh(&sess_err->lock);
+
+ return snprintf(page, PAGE_SIZE, "%u\n", sess_err_count);
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(fail_sess);
+
+static ssize_t iscsi_stat_instance_show_attr_fail_type(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_sess_err_stats *sess_err = &tiqn->sess_err_stats;
+
+ return snprintf(page, PAGE_SIZE, "%u\n",
+ sess_err->last_sess_failure_type);
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(fail_type);
+
+static ssize_t iscsi_stat_instance_show_attr_fail_rem_name(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_sess_err_stats *sess_err = &tiqn->sess_err_stats;
+
+ return snprintf(page, PAGE_SIZE, "%s\n",
+ sess_err->last_sess_fail_rem_name[0] ?
+ sess_err->last_sess_fail_rem_name : NONE);
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(fail_rem_name);
+
+static ssize_t iscsi_stat_instance_show_attr_disc_time(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_DISCONTINUITY_TIME);
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(disc_time);
+
+static ssize_t iscsi_stat_instance_show_attr_description(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%s\n", ISCSI_INST_DESCR);
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(description);
+
+static ssize_t iscsi_stat_instance_show_attr_vendor(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "Linux-iSCSI.org\n");
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(vendor);
+
+static ssize_t iscsi_stat_instance_show_attr_version(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%s on %s/%s\n", ISCSI_VERSION,
+ utsname()->sysname, utsname()->machine);
+}
+ISCSI_STAT_INSTANCE_ATTR_RO(version);
+
+CONFIGFS_EATTR_OPS(iscsi_stat_instance, iscsi_wwn_stat_grps,
+ iscsi_instance_group);
+
+static struct configfs_attribute *iscsi_stat_instance_attrs[] = {
+ &iscsi_stat_instance_inst.attr,
+ &iscsi_stat_instance_min_ver.attr,
+ &iscsi_stat_instance_max_ver.attr,
+ &iscsi_stat_instance_portals.attr,
+ &iscsi_stat_instance_nodes.attr,
+ &iscsi_stat_instance_sessions.attr,
+ &iscsi_stat_instance_fail_sess.attr,
+ &iscsi_stat_instance_fail_type.attr,
+ &iscsi_stat_instance_fail_rem_name.attr,
+ &iscsi_stat_instance_disc_time.attr,
+ &iscsi_stat_instance_description.attr,
+ &iscsi_stat_instance_vendor.attr,
+ &iscsi_stat_instance_version.attr,
+ NULL,
+};
+
+static struct configfs_item_operations iscsi_stat_instance_item_ops = {
+ .show_attribute = iscsi_stat_instance_attr_show,
+ .store_attribute = iscsi_stat_instance_attr_store,
+};
+
+struct config_item_type iscsi_stat_instance_cit = {
+ .ct_item_ops = &iscsi_stat_instance_item_ops,
+ .ct_attrs = iscsi_stat_instance_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+/*
+ * Instance Session Failure Stats Table
+ */
+CONFIGFS_EATTR_STRUCT(iscsi_stat_sess_err, iscsi_wwn_stat_grps);
+#define ISCSI_STAT_SESS_ERR_ATTR(_name, _mode) \
+static struct iscsi_stat_sess_err_attribute \
+ iscsi_stat_sess_err_##_name = \
+ __CONFIGFS_EATTR(_name, _mode, \
+ iscsi_stat_sess_err_show_attr_##_name, \
+ iscsi_stat_sess_err_store_attr_##_name);
+
+#define ISCSI_STAT_SESS_ERR_ATTR_RO(_name) \
+static struct iscsi_stat_sess_err_attribute \
+ iscsi_stat_sess_err_##_name = \
+ __CONFIGFS_EATTR_RO(_name, \
+ iscsi_stat_sess_err_show_attr_##_name);
+
+static ssize_t iscsi_stat_sess_err_show_attr_inst(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+
+ return snprintf(page, PAGE_SIZE, "%u\n", tiqn->tiqn_index);
+}
+ISCSI_STAT_SESS_ERR_ATTR_RO(inst);
+
+static ssize_t iscsi_stat_sess_err_show_attr_digest_errors(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_sess_err_stats *sess_err = &tiqn->sess_err_stats;
+
+ return snprintf(page, PAGE_SIZE, "%u\n", sess_err->digest_errors);
+}
+ISCSI_STAT_SESS_ERR_ATTR_RO(digest_errors);
+
+static ssize_t iscsi_stat_sess_err_show_attr_cxn_errors(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_sess_err_stats *sess_err = &tiqn->sess_err_stats;
+
+ return snprintf(page, PAGE_SIZE, "%u\n", sess_err->cxn_timeout_errors);
+}
+ISCSI_STAT_SESS_ERR_ATTR_RO(cxn_errors);
+
+static ssize_t iscsi_stat_sess_err_show_attr_format_errors(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_sess_err_stats *sess_err = &tiqn->sess_err_stats;
+
+ return snprintf(page, PAGE_SIZE, "%u\n", sess_err->pdu_format_errors);
+}
+ISCSI_STAT_SESS_ERR_ATTR_RO(format_errors);
+
+CONFIGFS_EATTR_OPS(iscsi_stat_sess_err, iscsi_wwn_stat_grps,
+ iscsi_sess_err_group);
+
+static struct configfs_attribute *iscsi_stat_sess_err_attrs[] = {
+ &iscsi_stat_sess_err_inst.attr,
+ &iscsi_stat_sess_err_digest_errors.attr,
+ &iscsi_stat_sess_err_cxn_errors.attr,
+ &iscsi_stat_sess_err_format_errors.attr,
+ NULL,
+};
+
+static struct configfs_item_operations iscsi_stat_sess_err_item_ops = {
+ .show_attribute = iscsi_stat_sess_err_attr_show,
+ .store_attribute = iscsi_stat_sess_err_attr_store,
+};
+
+struct config_item_type iscsi_stat_sess_err_cit = {
+ .ct_item_ops = &iscsi_stat_sess_err_item_ops,
+ .ct_attrs = iscsi_stat_sess_err_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+/*
+ * Target Attributes Table
+ */
+CONFIGFS_EATTR_STRUCT(iscsi_stat_tgt_attr, iscsi_wwn_stat_grps);
+#define ISCSI_STAT_TGT_ATTR(_name, _mode) \
+static struct iscsi_stat_tgt_attr_attribute \
+ iscsi_stat_tgt_attr_##_name = \
+ __CONFIGFS_EATTR(_name, _mode, \
+ iscsi_stat_tgt-attr_show_attr_##_name, \
+ iscsi_stat_tgt_attr_store_attr_##_name);
+
+#define ISCSI_STAT_TGT_ATTR_RO(_name) \
+static struct iscsi_stat_tgt_attr_attribute \
+ iscsi_stat_tgt_attr_##_name = \
+ __CONFIGFS_EATTR_RO(_name, \
+ iscsi_stat_tgt_attr_show_attr_##_name);
+
+static ssize_t iscsi_stat_tgt_attr_show_attr_inst(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+
+ return snprintf(page, PAGE_SIZE, "%u\n", tiqn->tiqn_index);
+}
+ISCSI_STAT_TGT_ATTR_RO(inst);
+
+static ssize_t iscsi_stat_tgt_attr_show_attr_indx(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_NODE_INDEX);
+}
+ISCSI_STAT_TGT_ATTR_RO(indx);
+
+static ssize_t iscsi_stat_tgt_attr_show_attr_login_fails(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_login_stats *lstat = &tiqn->login_stats;
+ u32 fail_count;
+
+ spin_lock(&lstat->lock);
+ fail_count = (lstat->redirects + lstat->authorize_fails +
+ lstat->authenticate_fails + lstat->negotiate_fails +
+ lstat->other_fails);
+ spin_unlock(&lstat->lock);
+
+ return snprintf(page, PAGE_SIZE, "%u\n", fail_count);
+}
+ISCSI_STAT_TGT_ATTR_RO(login_fails);
+
+static ssize_t iscsi_stat_tgt_attr_show_attr_last_fail_time(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_login_stats *lstat = &tiqn->login_stats;
+ u32 last_fail_time;
+
+ spin_lock(&lstat->lock);
+ last_fail_time = lstat->last_fail_time ?
+ (u32)(((u32)lstat->last_fail_time -
+ INITIAL_JIFFIES) * 100 / HZ) : 0;
+ spin_unlock(&lstat->lock);
+
+ return snprintf(page, PAGE_SIZE, "%u\n", last_fail_time);
+}
+ISCSI_STAT_TGT_ATTR_RO(last_fail_time);
+
+static ssize_t iscsi_stat_tgt_attr_show_attr_last_fail_type(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_login_stats *lstat = &tiqn->login_stats;
+ u32 last_fail_type;
+
+ spin_lock(&lstat->lock);
+ last_fail_type = lstat->last_fail_type;
+ spin_unlock(&lstat->lock);
+
+ return snprintf(page, PAGE_SIZE, "%u\n", last_fail_type);
+}
+ISCSI_STAT_TGT_ATTR_RO(last_fail_type);
+
+static ssize_t iscsi_stat_tgt_attr_show_attr_fail_intr_name(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_login_stats *lstat = &tiqn->login_stats;
+ unsigned char buf[224];
+
+ spin_lock(&lstat->lock);
+ snprintf(buf, 224, "%s", lstat->last_intr_fail_name[0] ?
+ lstat->last_intr_fail_name : NONE);
+ spin_unlock(&lstat->lock);
+
+ return snprintf(page, PAGE_SIZE, "%s\n", buf);
+}
+ISCSI_STAT_TGT_ATTR_RO(fail_intr_name);
+
+static ssize_t iscsi_stat_tgt_attr_show_attr_fail_intr_addr_type(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_login_stats *lstat = &tiqn->login_stats;
+ unsigned char buf[8];
+
+ spin_lock(&lstat->lock);
+ snprintf(buf, 8, "%s", (lstat->last_intr_fail_ip6_addr != NULL) ?
+ "ipv6" : "ipv4");
+ spin_unlock(&lstat->lock);
+
+ return snprintf(page, PAGE_SIZE, "%s\n", buf);
+}
+ISCSI_STAT_TGT_ATTR_RO(fail_intr_addr_type);
+
+static ssize_t iscsi_stat_tgt_attr_show_attr_fail_intr_addr(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_login_stats *lstat = &tiqn->login_stats;
+ unsigned char buf[32];
+
+ spin_lock(&lstat->lock);
+ if (lstat->last_intr_fail_ip6_addr != NULL)
+ snprintf(buf, 32, "[%s]", lstat->last_intr_fail_ip6_addr);
+ else
+ snprintf(buf, 32, "%08X", lstat->last_intr_fail_addr);
+ spin_unlock(&lstat->lock);
+
+ return snprintf(page, PAGE_SIZE, "%s\n", buf);
+}
+ISCSI_STAT_TGT_ATTR_RO(fail_intr_addr);
+
+CONFIGFS_EATTR_OPS(iscsi_stat_tgt_attr, iscsi_wwn_stat_grps,
+ iscsi_tgt_attr_group);
+
+static struct configfs_attribute *iscsi_stat_tgt_attr_attrs[] = {
+ &iscsi_stat_tgt_attr_inst.attr,
+ &iscsi_stat_tgt_attr_indx.attr,
+ &iscsi_stat_tgt_attr_login_fails.attr,
+ &iscsi_stat_tgt_attr_last_fail_time.attr,
+ &iscsi_stat_tgt_attr_last_fail_type.attr,
+ &iscsi_stat_tgt_attr_fail_intr_name.attr,
+ &iscsi_stat_tgt_attr_fail_intr_addr_type.attr,
+ &iscsi_stat_tgt_attr_fail_intr_addr.attr,
+ NULL,
+};
+
+static struct configfs_item_operations iscsi_stat_tgt_attr_item_ops = {
+ .show_attribute = iscsi_stat_tgt_attr_attr_show,
+ .store_attribute = iscsi_stat_tgt_attr_attr_store,
+};
+
+struct config_item_type iscsi_stat_tgt_attr_cit = {
+ .ct_item_ops = &iscsi_stat_tgt_attr_item_ops,
+ .ct_attrs = iscsi_stat_tgt_attr_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+/*
+ * Target Login Stats Table
+ */
+CONFIGFS_EATTR_STRUCT(iscsi_stat_login, iscsi_wwn_stat_grps);
+#define ISCSI_STAT_LOGIN(_name, _mode) \
+static struct iscsi_stat_login_attribute \
+ iscsi_stat_login_##_name = \
+ __CONFIGFS_EATTR(_name, _mode, \
+ iscsi_stat_login_show_attr_##_name, \
+ iscsi_stat_login_store_attr_##_name);
+
+#define ISCSI_STAT_LOGIN_RO(_name) \
+static struct iscsi_stat_login_attribute \
+ iscsi_stat_login_##_name = \
+ __CONFIGFS_EATTR_RO(_name, \
+ iscsi_stat_login_show_attr_##_name);
+
+static ssize_t iscsi_stat_login_show_attr_inst(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+
+ return snprintf(page, PAGE_SIZE, "%u\n", tiqn->tiqn_index);
+}
+ISCSI_STAT_LOGIN_RO(inst);
+
+static ssize_t iscsi_stat_login_show_attr_indx(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_NODE_INDEX);
+}
+ISCSI_STAT_LOGIN_RO(indx);
+
+static ssize_t iscsi_stat_login_show_attr_accepts(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_login_stats *lstat = &tiqn->login_stats;
+ ssize_t ret;
+
+ spin_lock(&lstat->lock);
+ ret = snprintf(page, PAGE_SIZE, "%u\n", lstat->accepts);
+ spin_unlock(&lstat->lock);
+
+ return ret;
+}
+ISCSI_STAT_LOGIN_RO(accepts);
+
+static ssize_t iscsi_stat_login_show_attr_other_fails(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_login_stats *lstat = &tiqn->login_stats;
+ ssize_t ret;
+
+ spin_lock(&lstat->lock);
+ ret = snprintf(page, PAGE_SIZE, "%u\n", lstat->other_fails);
+ spin_unlock(&lstat->lock);
+
+ return ret;
+}
+ISCSI_STAT_LOGIN_RO(other_fails);
+
+static ssize_t iscsi_stat_login_show_attr_redirects(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_login_stats *lstat = &tiqn->login_stats;
+ ssize_t ret;
+
+ spin_lock(&lstat->lock);
+ ret = snprintf(page, PAGE_SIZE, "%u\n", lstat->redirects);
+ spin_unlock(&lstat->lock);
+
+ return ret;
+}
+ISCSI_STAT_LOGIN_RO(redirects);
+
+static ssize_t iscsi_stat_login_show_attr_authorize_fails(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_login_stats *lstat = &tiqn->login_stats;
+ ssize_t ret;
+
+ spin_lock(&lstat->lock);
+ ret = snprintf(page, PAGE_SIZE, "%u\n", lstat->authorize_fails);
+ spin_unlock(&lstat->lock);
+
+ return ret;
+}
+ISCSI_STAT_LOGIN_RO(authorize_fails);
+
+static ssize_t iscsi_stat_login_show_attr_authenticate_fails(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_login_stats *lstat = &tiqn->login_stats;
+ ssize_t ret;
+
+ spin_lock(&lstat->lock);
+ ret = snprintf(page, PAGE_SIZE, "%u\n", lstat->authenticate_fails);
+ spin_unlock(&lstat->lock);
+
+ return ret;
+}
+ISCSI_STAT_LOGIN_RO(authenticate_fails);
+
+static ssize_t iscsi_stat_login_show_attr_negotiate_fails(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_login_stats *lstat = &tiqn->login_stats;
+ ssize_t ret;
+
+ spin_lock(&lstat->lock);
+ ret = snprintf(page, PAGE_SIZE, "%u\n", lstat->negotiate_fails);
+ spin_unlock(&lstat->lock);
+
+ return ret;
+}
+ISCSI_STAT_LOGIN_RO(negotiate_fails);
+
+CONFIGFS_EATTR_OPS(iscsi_stat_login, iscsi_wwn_stat_grps,
+ iscsi_login_stats_group);
+
+static struct configfs_attribute *iscsi_stat_login_stats_attrs[] = {
+ &iscsi_stat_login_inst.attr,
+ &iscsi_stat_login_indx.attr,
+ &iscsi_stat_login_accepts.attr,
+ &iscsi_stat_login_other_fails.attr,
+ &iscsi_stat_login_redirects.attr,
+ &iscsi_stat_login_authorize_fails.attr,
+ &iscsi_stat_login_authenticate_fails.attr,
+ &iscsi_stat_login_negotiate_fails.attr,
+ NULL,
+};
+
+static struct configfs_item_operations iscsi_stat_login_stats_item_ops = {
+ .show_attribute = iscsi_stat_login_attr_show,
+ .store_attribute = iscsi_stat_login_attr_store,
+};
+
+struct config_item_type iscsi_stat_login_cit = {
+ .ct_item_ops = &iscsi_stat_login_stats_item_ops,
+ .ct_attrs = iscsi_stat_login_stats_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+/*
+ * Target Logout Stats Table
+ */
+
+CONFIGFS_EATTR_STRUCT(iscsi_stat_logout, iscsi_wwn_stat_grps);
+#define ISCSI_STAT_LOGOUT(_name, _mode) \
+static struct iscsi_stat_logout_attribute \
+ iscsi_stat_logout_##_name = \
+ __CONFIGFS_EATTR(_name, _mode, \
+ iscsi_stat_logout_show_attr_##_name, \
+ iscsi_stat_logout_store_attr_##_name);
+
+#define ISCSI_STAT_LOGOUT_RO(_name) \
+static struct iscsi_stat_logout_attribute \
+ iscsi_stat_logout_##_name = \
+ __CONFIGFS_EATTR_RO(_name, \
+ iscsi_stat_logout_show_attr_##_name);
+
+static ssize_t iscsi_stat_logout_show_attr_inst(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+
+ return snprintf(page, PAGE_SIZE, "%u\n", tiqn->tiqn_index);
+}
+ISCSI_STAT_LOGOUT_RO(inst);
+
+static ssize_t iscsi_stat_logout_show_attr_indx(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_NODE_INDEX);
+}
+ISCSI_STAT_LOGOUT_RO(indx);
+
+static ssize_t iscsi_stat_logout_show_attr_normal_logouts(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_logout_stats *lstats = &tiqn->logout_stats;
+
+ return snprintf(page, PAGE_SIZE, "%u\n", lstats->normal_logouts);
+}
+ISCSI_STAT_LOGOUT_RO(normal_logouts);
+
+static ssize_t iscsi_stat_logout_show_attr_abnormal_logouts(
+ struct iscsi_wwn_stat_grps *igrps, char *page)
+{
+ struct iscsi_tiqn *tiqn = container_of(igrps,
+ struct iscsi_tiqn, tiqn_stat_grps);
+ struct iscsi_logout_stats *lstats = &tiqn->logout_stats;
+
+ return snprintf(page, PAGE_SIZE, "%u\n", lstats->abnormal_logouts);
+}
+ISCSI_STAT_LOGOUT_RO(abnormal_logouts);
+
+CONFIGFS_EATTR_OPS(iscsi_stat_logout, iscsi_wwn_stat_grps,
+ iscsi_logout_stats_group);
+
+static struct configfs_attribute *iscsi_stat_logout_stats_attrs[] = {
+ &iscsi_stat_logout_inst.attr,
+ &iscsi_stat_logout_indx.attr,
+ &iscsi_stat_logout_normal_logouts.attr,
+ &iscsi_stat_logout_abnormal_logouts.attr,
+ NULL,
+};
+
+static struct configfs_item_operations iscsi_stat_logout_stats_item_ops = {
+ .show_attribute = iscsi_stat_logout_attr_show,
+ .store_attribute = iscsi_stat_logout_attr_store,
+};
+
+struct config_item_type iscsi_stat_logout_cit = {
+ .ct_item_ops = &iscsi_stat_logout_stats_item_ops,
+ .ct_attrs = iscsi_stat_logout_stats_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+/*
+ * Session Stats Table
+ */
+
+CONFIGFS_EATTR_STRUCT(iscsi_stat_sess, iscsi_node_stat_grps);
+#define ISCSI_STAT_SESS(_name, _mode) \
+static struct iscsi_stat_sess_attribute \
+ iscsi_stat_sess_##_name = \
+ __CONFIGFS_EATTR(_name, _mode, \
+ iscsi_stat_sess_show_attr_##_name, \
+ iscsi_stat_sess_store_attr_##_name);
+
+#define ISCSI_STAT_SESS_RO(_name) \
+static struct iscsi_stat_sess_attribute \
+ iscsi_stat_sess_##_name = \
+ __CONFIGFS_EATTR_RO(_name, \
+ iscsi_stat_sess_show_attr_##_name);
+
+static ssize_t iscsi_stat_sess_show_attr_inst(
+ struct iscsi_node_stat_grps *igrps, char *page)
+{
+ struct iscsi_node_acl *acl = container_of(igrps,
+ struct iscsi_node_acl, node_stat_grps);
+ struct se_wwn *wwn = acl->se_node_acl.se_tpg->se_tpg_wwn;
+ struct iscsi_tiqn *tiqn = container_of(wwn,
+ struct iscsi_tiqn, tiqn_wwn);
+
+ return snprintf(page, PAGE_SIZE, "%u\n", tiqn->tiqn_index);
+}
+ISCSI_STAT_SESS_RO(inst);
+
+static ssize_t iscsi_stat_sess_show_attr_node(
+ struct iscsi_node_stat_grps *igrps, char *page)
+{
+ struct iscsi_node_acl *acl = container_of(igrps,
+ struct iscsi_node_acl, node_stat_grps);
+ struct se_node_acl *se_nacl = &acl->se_node_acl;
+ struct iscsi_session *sess;
+ struct se_session *se_sess;
+ ssize_t ret = 0;
+
+ spin_lock_bh(&se_nacl->nacl_sess_lock);
+ se_sess = se_nacl->nacl_sess;
+ if (se_sess) {
+ sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+ if (sess)
+ ret = snprintf(page, PAGE_SIZE, "%u\n",
+ sess->sess_ops->SessionType ? 0 : ISCSI_NODE_INDEX);
+ }
+ spin_unlock_bh(&se_nacl->nacl_sess_lock);
+
+ return ret;
+}
+ISCSI_STAT_SESS_RO(node);
+
+static ssize_t iscsi_stat_sess_show_attr_indx(
+ struct iscsi_node_stat_grps *igrps, char *page)
+{
+ struct iscsi_node_acl *acl = container_of(igrps,
+ struct iscsi_node_acl, node_stat_grps);
+ struct se_node_acl *se_nacl = &acl->se_node_acl;
+ struct iscsi_session *sess;
+ struct se_session *se_sess;
+ ssize_t ret = 0;
+
+ spin_lock_bh(&se_nacl->nacl_sess_lock);
+ se_sess = se_nacl->nacl_sess;
+ if (se_sess) {
+ sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+ if (sess)
+ ret = snprintf(page, PAGE_SIZE, "%u\n",
+ sess->session_index);
+ }
+ spin_unlock_bh(&se_nacl->nacl_sess_lock);
+
+ return ret;
+}
+ISCSI_STAT_SESS_RO(indx);
+
+static ssize_t iscsi_stat_sess_show_attr_cmd_pdus(
+ struct iscsi_node_stat_grps *igrps, char *page)
+{
+ struct iscsi_node_acl *acl = container_of(igrps,
+ struct iscsi_node_acl, node_stat_grps);
+ struct se_node_acl *se_nacl = &acl->se_node_acl;
+ struct iscsi_session *sess;
+ struct se_session *se_sess;
+ ssize_t ret = 0;
+
+ spin_lock_bh(&se_nacl->nacl_sess_lock);
+ se_sess = se_nacl->nacl_sess;
+ if (se_sess) {
+ sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+ if (sess)
+ ret = snprintf(page, PAGE_SIZE, "%u\n", sess->cmd_pdus);
+ }
+ spin_unlock_bh(&se_nacl->nacl_sess_lock);
+
+ return ret;
+}
+ISCSI_STAT_SESS_RO(cmd_pdus);
+
+static ssize_t iscsi_stat_sess_show_attr_rsp_pdus(
+ struct iscsi_node_stat_grps *igrps, char *page)
+{
+ struct iscsi_node_acl *acl = container_of(igrps,
+ struct iscsi_node_acl, node_stat_grps);
+ struct se_node_acl *se_nacl = &acl->se_node_acl;
+ struct iscsi_session *sess;
+ struct se_session *se_sess;
+ ssize_t ret = 0;
+
+ spin_lock_bh(&se_nacl->nacl_sess_lock);
+ se_sess = se_nacl->nacl_sess;
+ if (se_sess) {
+ sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+ if (sess)
+ ret = snprintf(page, PAGE_SIZE, "%u\n", sess->rsp_pdus);
+ }
+ spin_unlock_bh(&se_nacl->nacl_sess_lock);
+
+ return ret;
+}
+ISCSI_STAT_SESS_RO(rsp_pdus);
+
+static ssize_t iscsi_stat_sess_show_attr_txdata_octs(
+ struct iscsi_node_stat_grps *igrps, char *page)
+{
+ struct iscsi_node_acl *acl = container_of(igrps,
+ struct iscsi_node_acl, node_stat_grps);
+ struct se_node_acl *se_nacl = &acl->se_node_acl;
+ struct iscsi_session *sess;
+ struct se_session *se_sess;
+ ssize_t ret = 0;
+
+ spin_lock_bh(&se_nacl->nacl_sess_lock);
+ se_sess = se_nacl->nacl_sess;
+ if (se_sess) {
+ sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+ if (sess)
+ ret = snprintf(page, PAGE_SIZE, "%llu\n",
+ (unsigned long long)sess->tx_data_octets);
+ }
+ spin_unlock_bh(&se_nacl->nacl_sess_lock);
+
+ return ret;
+}
+ISCSI_STAT_SESS_RO(txdata_octs);
+
+static ssize_t iscsi_stat_sess_show_attr_rxdata_octs(
+ struct iscsi_node_stat_grps *igrps, char *page)
+{
+ struct iscsi_node_acl *acl = container_of(igrps,
+ struct iscsi_node_acl, node_stat_grps);
+ struct se_node_acl *se_nacl = &acl->se_node_acl;
+ struct iscsi_session *sess;
+ struct se_session *se_sess;
+ ssize_t ret = 0;
+
+ spin_lock_bh(&se_nacl->nacl_sess_lock);
+ se_sess = se_nacl->nacl_sess;
+ if (se_sess) {
+ sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+ if (sess)
+ ret = snprintf(page, PAGE_SIZE, "%llu\n",
+ (unsigned long long)sess->rx_data_octets);
+ }
+ spin_unlock_bh(&se_nacl->nacl_sess_lock);
+
+ return ret;
+}
+ISCSI_STAT_SESS_RO(rxdata_octs);
+
+static ssize_t iscsi_stat_sess_show_attr_conn_digest_errors(
+ struct iscsi_node_stat_grps *igrps, char *page)
+{
+ struct iscsi_node_acl *acl = container_of(igrps,
+ struct iscsi_node_acl, node_stat_grps);
+ struct se_node_acl *se_nacl = &acl->se_node_acl;
+ struct iscsi_session *sess;
+ struct se_session *se_sess;
+ ssize_t ret = 0;
+
+ spin_lock_bh(&se_nacl->nacl_sess_lock);
+ se_sess = se_nacl->nacl_sess;
+ if (se_sess) {
+ sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+ if (sess)
+ ret = snprintf(page, PAGE_SIZE, "%u\n",
+ sess->conn_digest_errors);
+ }
+ spin_unlock_bh(&se_nacl->nacl_sess_lock);
+
+ return ret;
+}
+ISCSI_STAT_SESS_RO(conn_digest_errors);
+
+static ssize_t iscsi_stat_sess_show_attr_conn_timeout_errors(
+ struct iscsi_node_stat_grps *igrps, char *page)
+{
+ struct iscsi_node_acl *acl = container_of(igrps,
+ struct iscsi_node_acl, node_stat_grps);
+ struct se_node_acl *se_nacl = &acl->se_node_acl;
+ struct iscsi_session *sess;
+ struct se_session *se_sess;
+ ssize_t ret = 0;
+
+ spin_lock_bh(&se_nacl->nacl_sess_lock);
+ se_sess = se_nacl->nacl_sess;
+ if (se_sess) {
+ sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+ if (sess)
+ ret = snprintf(page, PAGE_SIZE, "%u\n",
+ sess->conn_timeout_errors);
+ }
+ spin_unlock_bh(&se_nacl->nacl_sess_lock);
+
+ return ret;
+}
+ISCSI_STAT_SESS_RO(conn_timeout_errors);
+
+CONFIGFS_EATTR_OPS(iscsi_stat_sess, iscsi_node_stat_grps,
+ iscsi_sess_stats_group);
+
+static struct configfs_attribute *iscsi_stat_sess_stats_attrs[] = {
+ &iscsi_stat_sess_inst.attr,
+ &iscsi_stat_sess_node.attr,
+ &iscsi_stat_sess_indx.attr,
+ &iscsi_stat_sess_cmd_pdus.attr,
+ &iscsi_stat_sess_rsp_pdus.attr,
+ &iscsi_stat_sess_txdata_octs.attr,
+ &iscsi_stat_sess_rxdata_octs.attr,
+ &iscsi_stat_sess_conn_digest_errors.attr,
+ &iscsi_stat_sess_conn_timeout_errors.attr,
+ NULL,
+};
+
+static struct configfs_item_operations iscsi_stat_sess_stats_item_ops = {
+ .show_attribute = iscsi_stat_sess_attr_show,
+ .store_attribute = iscsi_stat_sess_attr_store,
+};
+
+struct config_item_type iscsi_stat_sess_cit = {
+ .ct_item_ops = &iscsi_stat_sess_stats_item_ops,
+ .ct_attrs = iscsi_stat_sess_stats_attrs,
+ .ct_owner = THIS_MODULE,
+};
diff --git a/drivers/target/iscsi/iscsi_target_stat.h b/drivers/target/iscsi/iscsi_target_stat.h
new file mode 100644
index 0000000..f23d79a
--- /dev/null
+++ b/drivers/target/iscsi/iscsi_target_stat.h
@@ -0,0 +1,79 @@
+#ifndef ISCSI_TARGET_STAT_H
+#define ISCSI_TARGET_STAT_H
+
+/*
+ * For struct iscsi_tiqn->tiqn_wwn default groups
+ */
+extern struct config_item_type iscsi_stat_instance_cit;
+extern struct config_item_type iscsi_stat_sess_err_cit;
+extern struct config_item_type iscsi_stat_tgt_attr_cit;
+extern struct config_item_type iscsi_stat_login_cit;
+extern struct config_item_type iscsi_stat_logout_cit;
+
+/*
+ * For struct iscsi_session->se_sess default groups
+ */
+extern struct config_item_type iscsi_stat_sess_cit;
+
+/* iSCSI session error types */
+#define ISCSI_SESS_ERR_UNKNOWN 0
+#define ISCSI_SESS_ERR_DIGEST 1
+#define ISCSI_SESS_ERR_CXN_TIMEOUT 2
+#define ISCSI_SESS_ERR_PDU_FORMAT 3
+
+/* iSCSI session error stats */
+struct iscsi_sess_err_stats {
+ spinlock_t lock;
+ u32 digest_errors;
+ u32 cxn_timeout_errors;
+ u32 pdu_format_errors;
+ u32 last_sess_failure_type;
+ char last_sess_fail_rem_name[224];
+} ____cacheline_aligned;
+
+/* iSCSI login failure types (sub oids) */
+#define ISCSI_LOGIN_FAIL_OTHER 2
+#define ISCSI_LOGIN_FAIL_REDIRECT 3
+#define ISCSI_LOGIN_FAIL_AUTHORIZE 4
+#define ISCSI_LOGIN_FAIL_AUTHENTICATE 5
+#define ISCSI_LOGIN_FAIL_NEGOTIATE 6
+
+/* iSCSI login stats */
+struct iscsi_login_stats {
+ spinlock_t lock;
+ u32 accepts;
+ u32 other_fails;
+ u32 redirects;
+ u32 authorize_fails;
+ u32 authenticate_fails;
+ u32 negotiate_fails; /* used for notifications */
+ u64 last_fail_time; /* time stamp (jiffies) */
+ u32 last_fail_type;
+ u32 last_intr_fail_addr;
+ unsigned char last_intr_fail_ip6_addr[IPV6_ADDRESS_SPACE];
+ char last_intr_fail_name[224];
+} ____cacheline_aligned;
+
+/* iSCSI logout stats */
+struct iscsi_logout_stats {
+ spinlock_t lock;
+ u32 normal_logouts;
+ u32 abnormal_logouts;
+} ____cacheline_aligned;
+
+/* Structures for table index support */
+typedef enum {
+ ISCSI_INST_INDEX,
+ ISCSI_PORTAL_INDEX,
+ ISCSI_TARGET_AUTH_INDEX,
+ ISCSI_SESSION_INDEX,
+ ISCSI_CONNECTION_INDEX,
+ INDEX_TYPE_MAX
+} iscsi_index_t;
+
+struct iscsi_index_table {
+ spinlock_t lock;
+ u32 iscsi_mib_index[INDEX_TYPE_MAX];
+} ____cacheline_aligned;
+
+#endif /*** ISCSI_TARGET_STAT_H ***/
--
1.7.4.1


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