#ifndef __CEPH_FEATURES
#define __CEPH_FEATURES

/*
 * feature bits
 */
#define CEPH_FEATURE_UID            (1ULL<<0)
#define CEPH_FEATURE_NOSRCADDR      (1ULL<<1)
#define CEPH_FEATURE_MONCLOCKCHECK  (1ULL<<2)
#define CEPH_FEATURE_FLOCK          (1ULL<<3)
#define CEPH_FEATURE_SUBSCRIBE2     (1ULL<<4)
#define CEPH_FEATURE_MONNAMES       (1ULL<<5)
#define CEPH_FEATURE_RECONNECT_SEQ  (1ULL<<6)
#define CEPH_FEATURE_DIRLAYOUTHASH  (1ULL<<7)
#define CEPH_FEATURE_OBJECTLOCATOR  (1ULL<<8)
#define CEPH_FEATURE_PGID64         (1ULL<<9)
#define CEPH_FEATURE_INCSUBOSDMAP   (1ULL<<10)
#define CEPH_FEATURE_PGPOOL3        (1ULL<<11)
#define CEPH_FEATURE_OSDREPLYMUX    (1ULL<<12)
#define CEPH_FEATURE_OSDENC         (1ULL<<13)
#define CEPH_FEATURE_OMAP           (1ULL<<14)
#define CEPH_FEATURE_MONENC         (1ULL<<15)
#define CEPH_FEATURE_QUERY_T        (1ULL<<16)
#define CEPH_FEATURE_INDEP_PG_MAP   (1ULL<<17)
#define CEPH_FEATURE_CRUSH_TUNABLES (1ULL<<18)
#define CEPH_FEATURE_CHUNKY_SCRUB   (1ULL<<19)
#define CEPH_FEATURE_MON_NULLROUTE  (1ULL<<20)
#define CEPH_FEATURE_MON_GV         (1ULL<<21)
#define CEPH_FEATURE_BACKFILL_RESERVATION (1ULL<<22)
#define CEPH_FEATURE_MSG_AUTH	    (1ULL<<23)
#define CEPH_FEATURE_RECOVERY_RESERVATION (1ULL<<24)
#define CEPH_FEATURE_CRUSH_TUNABLES2 (1ULL<<25)
#define CEPH_FEATURE_CREATEPOOLID   (1ULL<<26)
#define CEPH_FEATURE_REPLY_CREATE_INODE   (1ULL<<27)
#define CEPH_FEATURE_OSD_HBMSGS     (1ULL<<28)
#define CEPH_FEATURE_MDSENC         (1ULL<<29)
#define CEPH_FEATURE_OSDHASHPSPOOL  (1ULL<<30)
#define CEPH_FEATURE_MON_SINGLE_PAXOS (1ULL<<31)
#define CEPH_FEATURE_OSD_SNAPMAPPER (1ULL<<32)
#define CEPH_FEATURE_MON_SCRUB      (1ULL<<33)
#define CEPH_FEATURE_OSD_PACKED_RECOVERY (1ULL<<34)
#define CEPH_FEATURE_OSD_CACHEPOOL (1ULL<<35)
#define CEPH_FEATURE_CRUSH_V2      (1ULL<<36)  /* new indep; SET_* steps */
#define CEPH_FEATURE_EXPORT_PEER   (1ULL<<37)
#define CEPH_FEATURE_OSD_ERASURE_CODES (1ULL<<38)
#define CEPH_FEATURE_OSD_TMAP2OMAP (1ULL<<38)   /* overlap with EC */
/* The process supports new-style OSDMap encoding. Monitors also use
   this bit to determine if peers support NAK messages. */
#define CEPH_FEATURE_OSDMAP_ENC    (1ULL<<39)
#define CEPH_FEATURE_MDS_INLINE_DATA     (1ULL<<40)
#define CEPH_FEATURE_CRUSH_TUNABLES3     (1ULL<<41)
#define CEPH_FEATURE_OSD_PRIMARY_AFFINITY (1ULL<<41)  /* overlap w/ tunables3 */
#define CEPH_FEATURE_MSGR_KEEPALIVE2   (1ULL<<42)
#define CEPH_FEATURE_OSD_POOLRESEND    (1ULL<<43)
#define CEPH_FEATURE_ERASURE_CODE_PLUGINS_V2 (1ULL<<44)
#define CEPH_FEATURE_OSD_SET_ALLOC_HINT (1ULL<<45)
#define CEPH_FEATURE_OSD_FADVISE_FLAGS (1ULL<<46)
#define CEPH_FEATURE_OSD_REPOP         (1ULL<<46)   /* overlap with fadvise */
#define CEPH_FEATURE_OSD_OBJECT_DIGEST  (1ULL<<46)  /* overlap with fadvise */
#define CEPH_FEATURE_OSD_TRANSACTION_MAY_LAYOUT (1ULL<<46) /* overlap w/ fadvise */
#define CEPH_FEATURE_MDS_QUOTA      (1ULL<<47)
#define CEPH_FEATURE_CRUSH_V4      (1ULL<<48)  /* straw2 buckets */
#define CEPH_FEATURE_OSD_MIN_SIZE_RECOVERY (1ULL<<49)
// duplicated since it was introduced at the same time as MIN_SIZE_RECOVERY
#define CEPH_FEATURE_OSD_PROXY_FEATURES (1ULL<<49)  /* overlap w/ above */

#define CEPH_FEATURE_RESERVED2 (1ULL<<61)  /* slow down, we are almost out... */
#define CEPH_FEATURE_RESERVED  (1ULL<<62)  /* DO NOT USE THIS ... last bit! */
#define CEPH_FEATURE_RESERVED_BROKEN  (1ULL<<63)  /* DO NOT USE THIS; see below */

/*
 * The introduction of CEPH_FEATURE_OSD_SNAPMAPPER caused the feature
 * vector to evaluate to 64 bit ~0.  To cope, we designate 1ULL << 63
 * to mean 33 bit ~0, and introduce a helper below to do the
 * translation.
 *
 * This was introduced by commit
 *   9ea02b84104045c2ffd7e7f4e7af512953855ecd v0.58-657-g9ea02b8
 * and fixed by commit
 *   4255b5c2fb54ae40c53284b3ab700fdfc7e61748 v0.65-263-g4255b5c
 */
#define CEPH_FEATURE_RESERVED_BROKEN (1ULL<<63)

static inline unsigned long long ceph_sanitize_features(unsigned long long f) {
	if (f & CEPH_FEATURE_RESERVED_BROKEN) {
		/* everything through OSD_SNAPMAPPER */
		return 0x1ffffffffull;
	} else {
		return f;
	}
}

/*
 * Features supported.  Should be everything above.
 */
#define CEPH_FEATURES_ALL		 \
	(CEPH_FEATURE_UID |		 \
	 CEPH_FEATURE_NOSRCADDR |	 \
	 CEPH_FEATURE_MONCLOCKCHECK |	 \
	 CEPH_FEATURE_FLOCK |		 \
	 CEPH_FEATURE_SUBSCRIBE2 |	 \
	 CEPH_FEATURE_MONNAMES |	 \
	 CEPH_FEATURE_RECONNECT_SEQ |	 \
	 CEPH_FEATURE_DIRLAYOUTHASH |	 \
	 CEPH_FEATURE_OBJECTLOCATOR |	 \
	 CEPH_FEATURE_PGID64 |		 \
	 CEPH_FEATURE_INCSUBOSDMAP |	 \
	 CEPH_FEATURE_PGPOOL3 |		 \
	 CEPH_FEATURE_OSDREPLYMUX |	 \
	 CEPH_FEATURE_OSDENC |		 \
	 CEPH_FEATURE_OMAP |		 \
	 CEPH_FEATURE_QUERY_T |		 \
	 CEPH_FEATURE_MONENC |		 \
	 CEPH_FEATURE_INDEP_PG_MAP |	 \
	 CEPH_FEATURE_CRUSH_TUNABLES |	 \
	 CEPH_FEATURE_CHUNKY_SCRUB |	 \
	 CEPH_FEATURE_MON_NULLROUTE |	 \
	 CEPH_FEATURE_MON_GV |		 \
	 CEPH_FEATURE_BACKFILL_RESERVATION | \
	 CEPH_FEATURE_MSG_AUTH |	     \
	 CEPH_FEATURE_RECOVERY_RESERVATION | \
	 CEPH_FEATURE_CRUSH_TUNABLES2 |	     \
	 CEPH_FEATURE_CREATEPOOLID |	     \
	 CEPH_FEATURE_REPLY_CREATE_INODE |   \
	 CEPH_FEATURE_OSD_HBMSGS |		\
	 CEPH_FEATURE_MDSENC |			\
	 CEPH_FEATURE_OSDHASHPSPOOL |       \
	 CEPH_FEATURE_MON_SINGLE_PAXOS |    \
	 CEPH_FEATURE_OSD_SNAPMAPPER |	    \
	 CEPH_FEATURE_MON_SCRUB	|	    \
	 CEPH_FEATURE_OSD_PACKED_RECOVERY | \
	 CEPH_FEATURE_OSD_CACHEPOOL |	    \
	 CEPH_FEATURE_CRUSH_V2 |	    \
	 CEPH_FEATURE_EXPORT_PEER |	    \
         CEPH_FEATURE_OSD_ERASURE_CODES |   \
	 CEPH_FEATURE_OSDMAP_ENC |          \
	 CEPH_FEATURE_MDS_INLINE_DATA |	    \
	 CEPH_FEATURE_CRUSH_TUNABLES3 |	    \
	 CEPH_FEATURE_OSD_PRIMARY_AFFINITY |	\
	 CEPH_FEATURE_MSGR_KEEPALIVE2 |	\
	 CEPH_FEATURE_OSD_POOLRESEND |	\
         CEPH_FEATURE_ERASURE_CODE_PLUGINS_V2 |   \
         CEPH_FEATURE_OSD_SET_ALLOC_HINT |   \
	 CEPH_FEATURE_OSD_FADVISE_FLAGS |     \
         CEPH_FEATURE_OSD_REPOP |   \
	 CEPH_FEATURE_OSD_OBJECT_DIGEST	|    \
         CEPH_FEATURE_OSD_TRANSACTION_MAY_LAYOUT |   \
	 CEPH_FEATURE_MDS_QUOTA | \
         CEPH_FEATURE_CRUSH_V4 |	     \
         CEPH_FEATURE_OSD_MIN_SIZE_RECOVERY |		 \
	 0ULL)

#define CEPH_FEATURES_SUPPORTED_DEFAULT  CEPH_FEATURES_ALL

/*
 * crush related features
 */
#define CEPH_FEATURES_CRUSH			\
	(CEPH_FEATURE_CRUSH_TUNABLES |		\
	 CEPH_FEATURE_CRUSH_TUNABLES2 |		\
	 CEPH_FEATURE_CRUSH_TUNABLES3 |		\
	 CEPH_FEATURE_CRUSH_V2 |		\
	 CEPH_FEATURE_CRUSH_V4)

/*
 * make sure we don't try to use the reserved features
 */
#define CEPH_STATIC_ASSERT(x) (void)(sizeof(int[((x)==0) ? -1 : 0]))

static inline void ____build_time_check_for_reserved_bits(void) {
	CEPH_STATIC_ASSERT((CEPH_FEATURES_ALL &
			    (CEPH_FEATURE_RESERVED |
			     CEPH_FEATURE_RESERVED2 |
			     CEPH_FEATURE_RESERVED_BROKEN)) == 0);
}

#endif
