drivers/s390/cio/schid.h

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