drivers/scsi/fnic/fnic_attrs.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
   4  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   5  */
   6 #include <linux/string.h>
   7 #include <linux/device.h>
   8 #include <scsi/scsi_host.h>
   9 #include "fnic.h"
  10
  11 static ssize_t fnic_show_state(struct device *dev,
  12                                struct device_attribute *attr, char *buf)
  13 {
  14         struct fc_lport *lp = shost_priv(class_to_shost(dev));
  15         struct fnic *fnic = lport_priv(lp);
  16
  17         return sysfs_emit(buf, "%s\n", fnic_state_str[fnic->state]);
  18 }
  19
  20 static ssize_t fnic_show_drv_version(struct device *dev,
  21                                      struct device_attribute *attr, char *buf)
  22 {
  23         return sysfs_emit(buf, "%s\n", DRV_VERSION);
  24 }
  25
  26 static ssize_t fnic_show_link_state(struct device *dev,
  27                                     struct device_attribute *attr, char *buf)
  28 {
  29         struct fc_lport *lp = shost_priv(class_to_shost(dev));
  30
  31         return sysfs_emit(buf, "%s\n", (lp->link_up) ? "Link Up" : "Link Down");
  32 }
  33
  34 static DEVICE_ATTR(fnic_state, S_IRUGO, fnic_show_state, NULL);
  35 static DEVICE_ATTR(drv_version, S_IRUGO, fnic_show_drv_version, NULL);
  36 static DEVICE_ATTR(link_state, S_IRUGO, fnic_show_link_state, NULL);
  37
  38 static struct attribute *fnic_host_attrs[] = {
  39         &dev_attr_fnic_state.attr,
  40         &dev_attr_drv_version.attr,
  41         &dev_attr_link_state.attr,
  42         NULL,
  43 };
  44
  45 static const struct attribute_group fnic_host_attr_group = {
  46         .attrs = fnic_host_attrs
  47 };
  48
  49 const struct attribute_group *fnic_host_groups[] = {
  50         &fnic_host_attr_group,
  51         NULL
  52 };