drivers/net/wireless/libertas/thread.h

   1 #ifndef __WLAN_THREAD_H_
   2 #define __WLAN_THREAD_H_
   3
   4 #include        <linux/kthread.h>
   5
   6 struct wlan_thread {
   7         struct task_struct *task;
   8         wait_queue_head_t waitq;
   9         pid_t pid;
  10         void *priv;
  11 };
  12
  13 static inline void wlan_activate_thread(struct wlan_thread * thr)
  14 {
  15         /** Record the thread pid */
  16         thr->pid = current->pid;
  17
  18         /** Initialize the wait queue */
  19         init_waitqueue_head(&thr->waitq);
  20 }
  21
  22 static inline void wlan_deactivate_thread(struct wlan_thread * thr)
  23 {
  24         lbs_deb_enter(LBS_DEB_THREAD);
  25
  26         thr->pid = 0;
  27
  28         lbs_deb_leave(LBS_DEB_THREAD);
  29 }
  30
  31 static inline void wlan_create_thread(int (*wlanfunc) (void *),
  32                                       struct wlan_thread * thr, char *name)
  33 {
  34         thr->task = kthread_run(wlanfunc, thr, "%s", name);
  35 }
  36
  37 static inline int wlan_terminate_thread(struct wlan_thread * thr)
  38 {
  39         lbs_deb_enter(LBS_DEB_THREAD);
  40
  41         /* Check if the thread is active or not */
  42         if (!thr->pid) {
  43                 printk(KERN_ERR "Thread does not exist\n");
  44                 return -1;
  45         }
  46         kthread_stop(thr->task);
  47
  48         lbs_deb_leave(LBS_DEB_THREAD);
  49         return 0;
  50 }
  51
  52 #endif