drivers/staging/bcm/Queue.h

   1 /*************************************
   2 * Queue.h
   3 **************************************/
   4 #ifndef __QUEUE_H__
   5 #define __QUEUE_H__
   6
   7
   8
   9 #define ENQUEUEPACKET(_Head, _Tail, _Packet)    \
  10 do {                                            \
  11         if (!_Head) {                           \
  12                 _Head = _Packet;                \
  13         }                                       \
  14         else {                                  \
  15                 (_Tail)->next = _Packet;        \
  16         }                                       \
  17         (_Packet)->next = NULL;                 \
  18         _Tail = _Packet;                        \
  19 } while (0)
  20 #define DEQUEUEPACKET(Head, Tail)               \
  21 do {                                            \
  22         if (Head) {                             \
  23                 if (!Head->next) {              \
  24                         Tail = NULL;            \
  25                 }                               \
  26                 Head = Head->next;              \
  27         }                                       \
  28 } while (0)
  29 #endif /* __QUEUE_H__ */