drivers/scsi/qedi/qedi_sysfs.c

   1 /*
   2  * QLogic iSCSI Offload Driver
   3  * Copyright (c) 2016 Cavium Inc.
   4  *
   5  * This software is available under the terms of the GNU General Public License
   6  * (GPL) Version 2, available from the file COPYING in the main directory of
   7  * this source tree.
   8  */
   9
  10 #include "qedi.h"
  11 #include "qedi_gbl.h"
  12 #include "qedi_iscsi.h"
  13 #include "qedi_dbg.h"
  14
  15 static inline struct qedi_ctx *qedi_dev_to_hba(struct device *dev)
  16 {
  17         struct Scsi_Host *shost = class_to_shost(dev);
  18
  19         return iscsi_host_priv(shost);
  20 }
  21
  22 static ssize_t qedi_show_port_state(struct device *dev,
  23                                     struct device_attribute *attr,
  24                                     char *buf)
  25 {
  26         struct qedi_ctx *qedi = qedi_dev_to_hba(dev);
  27
  28         if (atomic_read(&qedi->link_state) == QEDI_LINK_UP)
  29                 return sprintf(buf, "Online\n");
  30         else
  31                 return sprintf(buf, "Linkdown\n");
  32 }
  33
  34 static ssize_t qedi_show_speed(struct device *dev,
  35                                struct device_attribute *attr, char *buf)
  36 {
  37         struct qedi_ctx *qedi = qedi_dev_to_hba(dev);
  38         struct qed_link_output if_link;
  39
  40         qedi_ops->common->get_link(qedi->cdev, &if_link);
  41
  42         return sprintf(buf, "%d Gbit\n", if_link.speed / 1000);
  43 }
  44
  45 static DEVICE_ATTR(port_state, 0444, qedi_show_port_state, NULL);
  46 static DEVICE_ATTR(speed, 0444, qedi_show_speed, NULL);
  47
  48 struct device_attribute *qedi_shost_attrs[] = {
  49         &dev_attr_port_state,
  50         &dev_attr_speed,
  51         NULL
  52 };