kernel/drivers/scsi/snic/snic_attrs.c

   1 /*
   2  * Copyright 2014 Cisco Systems, Inc.  All rights reserved.
   3  *
   4  * This program is free software; you may redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   9  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  10  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  11  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  12  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  13  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  14  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  15  * SOFTWARE.
  16  */
  17
  18 #include <linux/string.h>
  19 #include <linux/device.h>
  20
  21 #include "snic.h"
  22
  23 static ssize_t
  24 snic_show_sym_name(struct device *dev,
  25                 struct device_attribute *attr,
  26                 char *buf)
  27 {
  28         struct snic *snic = shost_priv(class_to_shost(dev));
  29
  30         return snprintf(buf, PAGE_SIZE, "%s\n", snic->name);
  31 }
  32
  33 static ssize_t
  34 snic_show_state(struct device *dev,
  35                 struct device_attribute *attr,
  36                 char *buf)
  37 {
  38         struct snic *snic = shost_priv(class_to_shost(dev));
  39
  40         return snprintf(buf, PAGE_SIZE, "%s\n",
  41                         snic_state_str[snic_get_state(snic)]);
  42 }
  43
  44 static ssize_t
  45 snic_show_drv_version(struct device *dev,
  46                       struct device_attribute *attr,
  47                       char *buf)
  48 {
  49         return snprintf(buf, PAGE_SIZE, "%s\n", SNIC_DRV_VERSION);
  50 }
  51
  52 static ssize_t
  53 snic_show_link_state(struct device *dev,
  54                      struct device_attribute *attr,
  55                      char *buf)
  56 {
  57         struct snic *snic = shost_priv(class_to_shost(dev));
  58
  59         if (snic->config.xpt_type == SNIC_DAS)
  60                 snic->link_status = svnic_dev_link_status(snic->vdev);
  61
  62         return snprintf(buf, PAGE_SIZE, "%s\n",
  63                         (snic->link_status) ? "Link Up" : "Link Down");
  64 }
  65
  66 static DEVICE_ATTR(snic_sym_name, S_IRUGO, snic_show_sym_name, NULL);
  67 static DEVICE_ATTR(snic_state, S_IRUGO, snic_show_state, NULL);
  68 static DEVICE_ATTR(drv_version, S_IRUGO, snic_show_drv_version, NULL);
  69 static DEVICE_ATTR(link_state, S_IRUGO, snic_show_link_state, NULL);
  70
  71 struct device_attribute *snic_attrs[] = {
  72         &dev_attr_snic_sym_name,
  73         &dev_attr_snic_state,
  74         &dev_attr_drv_version,
  75         &dev_attr_link_state,
  76         NULL,
  77 };