drivers/scsi/fnic/fnic_attrs.c

   1 /*
   2  * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
   3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4  *
   5  * This program is free software; you may redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  10  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  11  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  12  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  13  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  14  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  15  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  16  * SOFTWARE.
  17  */
  18 #include <linux/string.h>
  19 #include <linux/device.h>
  20 #include <scsi/scsi_host.h>
  21 #include "fnic.h"
  22
  23 static ssize_t fnic_show_state(struct device *dev,
  24                                struct device_attribute *attr, char *buf)
  25 {
  26         struct fc_lport *lp = shost_priv(class_to_shost(dev));
  27         struct fnic *fnic = lport_priv(lp);
  28
  29         return snprintf(buf, PAGE_SIZE, "%s\n", fnic_state_str[fnic->state]);
  30 }
  31
  32 static ssize_t fnic_show_drv_version(struct device *dev,
  33                                      struct device_attribute *attr, char *buf)
  34 {
  35         return snprintf(buf, PAGE_SIZE, "%s\n", DRV_VERSION);
  36 }
  37
  38 static ssize_t fnic_show_link_state(struct device *dev,
  39                                     struct device_attribute *attr, char *buf)
  40 {
  41         struct fc_lport *lp = shost_priv(class_to_shost(dev));
  42
  43         return snprintf(buf, PAGE_SIZE, "%s\n", (lp->link_up)
  44                         ? "Link Up" : "Link Down");
  45 }
  46
  47 static DEVICE_ATTR(fnic_state, S_IRUGO, fnic_show_state, NULL);
  48 static DEVICE_ATTR(drv_version, S_IRUGO, fnic_show_drv_version, NULL);
  49 static DEVICE_ATTR(link_state, S_IRUGO, fnic_show_link_state, NULL);
  50
  51 struct device_attribute *fnic_attrs[] = {
  52         &dev_attr_fnic_state,
  53         &dev_attr_drv_version,
  54         &dev_attr_link_state,
  55         NULL,
  56 };