scsi/fnic/fnic_attrs.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
0004  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
0005  */
0006 #include <linux/string.h>
0007 #include <linux/device.h>
0008 #include <scsi/scsi_host.h>
0009 #include "fnic.h"
0010
0011 static ssize_t fnic_show_state(struct device *dev,
0012                    struct device_attribute *attr, char *buf)
0013 {
0014     struct fc_lport *lp = shost_priv(class_to_shost(dev));
0015     struct fnic *fnic = lport_priv(lp);
0016
0017     return snprintf(buf, PAGE_SIZE, "%s\n", fnic_state_str[fnic->state]);
0018 }
0019
0020 static ssize_t fnic_show_drv_version(struct device *dev,
0021                      struct device_attribute *attr, char *buf)
0022 {
0023     return snprintf(buf, PAGE_SIZE, "%s\n", DRV_VERSION);
0024 }
0025
0026 static ssize_t fnic_show_link_state(struct device *dev,
0027                     struct device_attribute *attr, char *buf)
0028 {
0029     struct fc_lport *lp = shost_priv(class_to_shost(dev));
0030
0031     return snprintf(buf, PAGE_SIZE, "%s\n", (lp->link_up)
0032             ? "Link Up" : "Link Down");
0033 }
0034
0035 static DEVICE_ATTR(fnic_state, S_IRUGO, fnic_show_state, NULL);
0036 static DEVICE_ATTR(drv_version, S_IRUGO, fnic_show_drv_version, NULL);
0037 static DEVICE_ATTR(link_state, S_IRUGO, fnic_show_link_state, NULL);
0038
0039 static struct attribute *fnic_host_attrs[] = {
0040     &dev_attr_fnic_state.attr,
0041     &dev_attr_drv_version.attr,
0042     &dev_attr_link_state.attr,
0043     NULL,
0044 };
0045
0046 static const struct attribute_group fnic_host_attr_group = {
0047     .attrs = fnic_host_attrs
0048 };
0049
0050 const struct attribute_group *fnic_host_groups[] = {
0051     &fnic_host_attr_group,
0052     NULL
0053 };