drivers/scsi/snic/snic_attrs.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 // Copyright 2014 Cisco Systems, Inc.  All rights reserved.
   3
   4 #include <linux/string.h>
   5 #include <linux/device.h>
   6
   7 #include "snic.h"
   8
   9 static ssize_t
  10 snic_show_sym_name(struct device *dev,
  11                 struct device_attribute *attr,
  12                 char *buf)
  13 {
  14         struct snic *snic = shost_priv(class_to_shost(dev));
  15
  16         return snprintf(buf, PAGE_SIZE, "%s\n", snic->name);
  17 }
  18
  19 static ssize_t
  20 snic_show_state(struct device *dev,
  21                 struct device_attribute *attr,
  22                 char *buf)
  23 {
  24         struct snic *snic = shost_priv(class_to_shost(dev));
  25
  26         return snprintf(buf, PAGE_SIZE, "%s\n",
  27                         snic_state_str[snic_get_state(snic)]);
  28 }
  29
  30 static ssize_t
  31 snic_show_drv_version(struct device *dev,
  32                       struct device_attribute *attr,
  33                       char *buf)
  34 {
  35         return snprintf(buf, PAGE_SIZE, "%s\n", SNIC_DRV_VERSION);
  36 }
  37
  38 static ssize_t
  39 snic_show_link_state(struct device *dev,
  40                      struct device_attribute *attr,
  41                      char *buf)
  42 {
  43         struct snic *snic = shost_priv(class_to_shost(dev));
  44
  45         if (snic->config.xpt_type == SNIC_DAS)
  46                 snic->link_status = svnic_dev_link_status(snic->vdev);
  47
  48         return snprintf(buf, PAGE_SIZE, "%s\n",
  49                         (snic->link_status) ? "Link Up" : "Link Down");
  50 }
  51
  52 static DEVICE_ATTR(snic_sym_name, S_IRUGO, snic_show_sym_name, NULL);
  53 static DEVICE_ATTR(snic_state, S_IRUGO, snic_show_state, NULL);
  54 static DEVICE_ATTR(drv_version, S_IRUGO, snic_show_drv_version, NULL);
  55 static DEVICE_ATTR(link_state, S_IRUGO, snic_show_link_state, NULL);
  56
  57 static struct attribute *snic_host_attrs[] = {
  58         &dev_attr_snic_sym_name.attr,
  59         &dev_attr_snic_state.attr,
  60         &dev_attr_drv_version.attr,
  61         &dev_attr_link_state.attr,
  62         NULL,
  63 };
  64
  65 static const struct attribute_group snic_host_attr_group = {
  66         .attrs = snic_host_attrs
  67 };
  68
  69 const struct attribute_group *snic_host_groups[] = {
  70         &snic_host_attr_group,
  71         NULL
  72 };