drivers/s390/cio/schid.h

   1 #ifndef S390_SCHID_H
   2 #define S390_SCHID_H
   3
   4 struct subchannel_id {
   5         __u32 reserved:15;
   6         __u32 one:1;
   7         __u32 sch_no:16;
   8 } __attribute__ ((packed,aligned(4)));
   9
  10
  11 /* Helper function for sane state of pre-allocated subchannel_id. */
  12 static inline void
  13 init_subchannel_id(struct subchannel_id *schid)
  14 {
  15         memset(schid, 0, sizeof(struct subchannel_id));
  16         schid->one = 1;
  17 }
  18
  19 static inline int
  20 schid_equal(struct subchannel_id *schid1, struct subchannel_id *schid2)
  21 {
  22         return !memcmp(schid1, schid2, sizeof(struct subchannel_id));
  23 }
  24
  25 #endif /* S390_SCHID_H */