From 1543e317f1da31b75942316931e8f491a8920811 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 04 Jan 2024 10:08:02 +0000
Subject: [PATCH] disable FB
---
kernel/drivers/s390/scsi/zfcp_sysfs.c | 257 ++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 252 insertions(+), 5 deletions(-)
diff --git a/kernel/drivers/s390/scsi/zfcp_sysfs.c b/kernel/drivers/s390/scsi/zfcp_sysfs.c
index af197e2..3c7f5ec 100644
--- a/kernel/drivers/s390/scsi/zfcp_sysfs.c
+++ b/kernel/drivers/s390/scsi/zfcp_sysfs.c
@@ -4,13 +4,14 @@
*
* sysfs attributes.
*
- * Copyright IBM Corp. 2008, 2010
+ * Copyright IBM Corp. 2008, 2020
*/
#define KMSG_COMPONENT "zfcp"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/slab.h>
+#include "zfcp_diag.h"
#include "zfcp_ext.h"
#define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
@@ -215,9 +216,21 @@
{
struct ccw_device *cdev = to_ccwdev(dev);
struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
+ int retval = 0;
if (!adapter)
return -ENODEV;
+
+ /*
+ * If `scsi_host` is missing, we can't schedule `scan_work`, as it
+ * makes use of the corresponding fc_host object. But this state is
+ * only possible if xconfig/xport data has never completed yet,
+ * and we couldn't successfully scan for ports anyway.
+ */
+ if (adapter->scsi_host == NULL) {
+ retval = -ENODEV;
+ goto out;
+ }
/*
* Users wish is our command: immediately schedule and flush a
@@ -226,9 +239,9 @@
*/
queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0);
flush_delayed_work(&adapter->scan_work);
+out:
zfcp_ccw_adapter_put(adapter);
-
- return (ssize_t) count;
+ return retval ? retval : (ssize_t) count;
}
static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
zfcp_sysfs_port_rescan_store);
@@ -325,6 +338,86 @@
static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
zfcp_sysfs_port_remove_store);
+static ssize_t
+zfcp_sysfs_adapter_diag_max_age_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev));
+ ssize_t rc;
+
+ if (!adapter)
+ return -ENODEV;
+
+ /* ceil(log(2^64 - 1) / log(10)) = 20 */
+ rc = scnprintf(buf, 20 + 2, "%lu\n", adapter->diagnostics->max_age);
+
+ zfcp_ccw_adapter_put(adapter);
+ return rc;
+}
+
+static ssize_t
+zfcp_sysfs_adapter_diag_max_age_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev));
+ unsigned long max_age;
+ ssize_t rc;
+
+ if (!adapter)
+ return -ENODEV;
+
+ rc = kstrtoul(buf, 10, &max_age);
+ if (rc != 0)
+ goto out;
+
+ adapter->diagnostics->max_age = max_age;
+
+ rc = count;
+out:
+ zfcp_ccw_adapter_put(adapter);
+ return rc;
+}
+static ZFCP_DEV_ATTR(adapter, diag_max_age, 0644,
+ zfcp_sysfs_adapter_diag_max_age_show,
+ zfcp_sysfs_adapter_diag_max_age_store);
+
+static ssize_t zfcp_sysfs_adapter_fc_security_show(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct ccw_device *cdev = to_ccwdev(dev);
+ struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
+ unsigned int status;
+ int i;
+
+ if (!adapter)
+ return -ENODEV;
+
+ /*
+ * Adapter status COMMON_OPEN implies xconf data and xport data
+ * was done. Adapter FC Endpoint Security capability remains
+ * unchanged in case of COMMON_ERP_FAILED (e.g. due to local link
+ * down).
+ */
+ status = atomic_read(&adapter->status);
+ if (0 == (status & ZFCP_STATUS_COMMON_OPEN))
+ i = sprintf(buf, "unknown\n");
+ else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY))
+ i = sprintf(buf, "unsupported\n");
+ else {
+ i = zfcp_fsf_scnprint_fc_security(
+ buf, PAGE_SIZE - 1, adapter->fc_security_algorithms,
+ ZFCP_FSF_PRINT_FMT_LIST);
+ i += scnprintf(buf + i, PAGE_SIZE - i, "\n");
+ }
+
+ zfcp_ccw_adapter_put(adapter);
+ return i;
+}
+static ZFCP_DEV_ATTR(adapter, fc_security, S_IRUGO,
+ zfcp_sysfs_adapter_fc_security_show,
+ NULL);
+
static struct attribute *zfcp_adapter_attrs[] = {
&dev_attr_adapter_failed.attr,
&dev_attr_adapter_in_recovery.attr,
@@ -337,6 +430,8 @@
&dev_attr_adapter_lic_version.attr,
&dev_attr_adapter_status.attr,
&dev_attr_adapter_hardware_version.attr,
+ &dev_attr_adapter_diag_max_age.attr,
+ &dev_attr_adapter_fc_security.attr,
NULL
};
@@ -380,6 +475,37 @@
}
static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
+static ssize_t zfcp_sysfs_port_fc_security_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
+ struct zfcp_adapter *adapter = port->adapter;
+ unsigned int status = atomic_read(&port->status);
+ int i;
+
+ if (0 == (status & ZFCP_STATUS_COMMON_OPEN) ||
+ 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) ||
+ 0 == (status & ZFCP_STATUS_PORT_PHYS_OPEN) ||
+ 0 != (status & ZFCP_STATUS_PORT_LINK_TEST) ||
+ 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED) ||
+ 0 != (status & ZFCP_STATUS_COMMON_ACCESS_BOXED))
+ i = sprintf(buf, "unknown\n");
+ else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY))
+ i = sprintf(buf, "unsupported\n");
+ else {
+ i = zfcp_fsf_scnprint_fc_security(
+ buf, PAGE_SIZE - 1, port->connection_info,
+ ZFCP_FSF_PRINT_FMT_SINGLEITEM);
+ i += scnprintf(buf + i, PAGE_SIZE - i, "\n");
+ }
+
+ return i;
+}
+static ZFCP_DEV_ATTR(port, fc_security, S_IRUGO,
+ zfcp_sysfs_port_fc_security_show,
+ NULL);
+
static struct attribute *zfcp_port_attrs[] = {
&dev_attr_unit_add.attr,
&dev_attr_unit_remove.attr,
@@ -387,6 +513,7 @@
&dev_attr_port_in_recovery.attr,
&dev_attr_port_status.attr,
&dev_attr_port_access_denied.attr,
+ &dev_attr_port_fc_security.attr,
NULL
};
static struct attribute_group zfcp_port_attr_group = {
@@ -577,7 +704,7 @@
return -ENOMEM;
retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
- if (!retval)
+ if (retval == 0 || retval == -EAGAIN)
retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
qtcb_port->cb_util, qtcb_port->a_util);
kfree(qtcb_port);
@@ -603,7 +730,7 @@
return -ENOMEM;
retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
- if (!retval)
+ if (retval == 0 || retval == -EAGAIN)
*stat_inf = qtcb_config->stat_info;
kfree(qtcb_config);
@@ -664,3 +791,123 @@
&dev_attr_queue_full,
NULL
};
+
+static ssize_t zfcp_sysfs_adapter_diag_b2b_credit_show(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev));
+ struct zfcp_diag_header *diag_hdr;
+ struct fc_els_flogi *nsp;
+ ssize_t rc = -ENOLINK;
+ unsigned long flags;
+ unsigned int status;
+
+ if (!adapter)
+ return -ENODEV;
+
+ status = atomic_read(&adapter->status);
+ if (0 == (status & ZFCP_STATUS_COMMON_OPEN) ||
+ 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) ||
+ 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED))
+ goto out;
+
+ diag_hdr = &adapter->diagnostics->config_data.header;
+
+ rc = zfcp_diag_update_buffer_limited(
+ adapter, diag_hdr, zfcp_diag_update_config_data_buffer);
+ if (rc != 0)
+ goto out;
+
+ spin_lock_irqsave(&diag_hdr->access_lock, flags);
+ /* nport_serv_param doesn't contain the ELS_Command code */
+ nsp = (struct fc_els_flogi *)((unsigned long)
+ adapter->diagnostics->config_data
+ .data.nport_serv_param -
+ sizeof(u32));
+
+ rc = scnprintf(buf, 5 + 2, "%hu\n",
+ be16_to_cpu(nsp->fl_csp.sp_bb_cred));
+ spin_unlock_irqrestore(&diag_hdr->access_lock, flags);
+
+out:
+ zfcp_ccw_adapter_put(adapter);
+ return rc;
+}
+static ZFCP_DEV_ATTR(adapter_diag, b2b_credit, 0400,
+ zfcp_sysfs_adapter_diag_b2b_credit_show, NULL);
+
+#define ZFCP_DEFINE_DIAG_SFP_ATTR(_name, _qtcb_member, _prtsize, _prtfmt) \
+ static ssize_t zfcp_sysfs_adapter_diag_sfp_##_name##_show( \
+ struct device *dev, struct device_attribute *attr, char *buf) \
+ { \
+ struct zfcp_adapter *const adapter = \
+ zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); \
+ struct zfcp_diag_header *diag_hdr; \
+ ssize_t rc = -ENOLINK; \
+ unsigned long flags; \
+ unsigned int status; \
+ \
+ if (!adapter) \
+ return -ENODEV; \
+ \
+ status = atomic_read(&adapter->status); \
+ if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || \
+ 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || \
+ 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) \
+ goto out; \
+ \
+ if (!zfcp_diag_support_sfp(adapter)) { \
+ rc = -EOPNOTSUPP; \
+ goto out; \
+ } \
+ \
+ diag_hdr = &adapter->diagnostics->port_data.header; \
+ \
+ rc = zfcp_diag_update_buffer_limited( \
+ adapter, diag_hdr, zfcp_diag_update_port_data_buffer); \
+ if (rc != 0) \
+ goto out; \
+ \
+ spin_lock_irqsave(&diag_hdr->access_lock, flags); \
+ rc = scnprintf( \
+ buf, (_prtsize) + 2, _prtfmt "\n", \
+ adapter->diagnostics->port_data.data._qtcb_member); \
+ spin_unlock_irqrestore(&diag_hdr->access_lock, flags); \
+ \
+ out: \
+ zfcp_ccw_adapter_put(adapter); \
+ return rc; \
+ } \
+ static ZFCP_DEV_ATTR(adapter_diag_sfp, _name, 0400, \
+ zfcp_sysfs_adapter_diag_sfp_##_name##_show, NULL)
+
+ZFCP_DEFINE_DIAG_SFP_ATTR(temperature, temperature, 6, "%hd");
+ZFCP_DEFINE_DIAG_SFP_ATTR(vcc, vcc, 5, "%hu");
+ZFCP_DEFINE_DIAG_SFP_ATTR(tx_bias, tx_bias, 5, "%hu");
+ZFCP_DEFINE_DIAG_SFP_ATTR(tx_power, tx_power, 5, "%hu");
+ZFCP_DEFINE_DIAG_SFP_ATTR(rx_power, rx_power, 5, "%hu");
+ZFCP_DEFINE_DIAG_SFP_ATTR(port_tx_type, sfp_flags.port_tx_type, 2, "%hu");
+ZFCP_DEFINE_DIAG_SFP_ATTR(optical_port, sfp_flags.optical_port, 1, "%hu");
+ZFCP_DEFINE_DIAG_SFP_ATTR(sfp_invalid, sfp_flags.sfp_invalid, 1, "%hu");
+ZFCP_DEFINE_DIAG_SFP_ATTR(connector_type, sfp_flags.connector_type, 1, "%hu");
+ZFCP_DEFINE_DIAG_SFP_ATTR(fec_active, sfp_flags.fec_active, 1, "%hu");
+
+static struct attribute *zfcp_sysfs_diag_attrs[] = {
+ &dev_attr_adapter_diag_sfp_temperature.attr,
+ &dev_attr_adapter_diag_sfp_vcc.attr,
+ &dev_attr_adapter_diag_sfp_tx_bias.attr,
+ &dev_attr_adapter_diag_sfp_tx_power.attr,
+ &dev_attr_adapter_diag_sfp_rx_power.attr,
+ &dev_attr_adapter_diag_sfp_port_tx_type.attr,
+ &dev_attr_adapter_diag_sfp_optical_port.attr,
+ &dev_attr_adapter_diag_sfp_sfp_invalid.attr,
+ &dev_attr_adapter_diag_sfp_connector_type.attr,
+ &dev_attr_adapter_diag_sfp_fec_active.attr,
+ &dev_attr_adapter_diag_b2b_credit.attr,
+ NULL,
+};
+
+const struct attribute_group zfcp_sysfs_diag_attr_group = {
+ .name = "diagnostics",
+ .attrs = zfcp_sysfs_diag_attrs,
+};
--
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