/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __CEPH_FEATURES#define __CEPH_FEATURES/* * Each time we reclaim bits for reuse we need to specify another bit * that , if present , indicates we have the new incarnation of that * feature . Base case is 1 ( first use ) . #define CEPH_FEATURE_INCARNATION_1 (0 ull)#define CEPH_FEATURE_INCARNATION_2 (1 ull<<57 ) // SERVER_JEWEL #define CEPH_FEATURE_INCARNATION_3 ((1 ull<<57 )|(1 ull<<28 )) // SERVER_MIMIC #define DEFINE_CEPH_FEATURE(bit, incarnation, name) \static const uint64_t __maybe_unused CEPH_FEATURE_## name = (1 ULL<<bit); \static const uint64_t __maybe_unused CEPH_FEATUREMASK_## name = \1 ULL<<bit | CEPH_FEATURE_INCARNATION_## incarnation);/* this bit is ignored but still advertised by release *when* */ #define DEFINE_CEPH_FEATURE_DEPRECATED(bit, incarnation, name, when) \static const uint64_t __maybe_unused DEPRECATED_CEPH_FEATURE_## name = (1 ULL<<bit); \static const uint64_t __maybe_unused DEPRECATED_CEPH_FEATUREMASK_## name = \1 ULL<<bit | CEPH_FEATURE_INCARNATION_## incarnation);/* * this bit is ignored by release * unused * and not advertised by * release * unadvertised * #define DEFINE_CEPH_FEATURE_RETIRED(bit, inc, name, unused, unadvertised)/* * test for a feature . this test is safer than a typical mask against * the bit because it ensures that we have the bit AND the marker for the * bit ' s incarnation . this must be used in any case where the features * bits may include an old meaning of the bit . #define CEPH_HAVE_FEATURE(x, name) \## name)) == (CEPH_FEATUREMASK_## name))/* * Notes on deprecation : * * A * major * release is a release through which all upgrades must pass * ( e . g . , jewel ) . For example , no pre - jewel server will ever talk to * a post - jewel server ( mon , osd , etc ) . * * For feature bits used * only * on the server - side : * * - In the first phase we indicate that a feature is DEPRECATED as of * a particular release . This is the first major release X ( say , * jewel ) that does not depend on its peers advertising the feature . * That is , it safely assumes its peers all have the feature . We * indicate this with the DEPRECATED macro . For example , * * DEFINE_CEPH_FEATURE_DEPRECATED ( 2 , 1 , MONCLOCKCHECK , JEWEL ) * * because 10 . 2 . z ( jewel ) did not care if its peers advertised this * feature bit . * * - In the second phase we stop advertising the bit and call it * RETIRED . This can normally be done in the * next * major release * following the one in which we marked the feature DEPRECATED . In * the above example , for 12 . 0 . z ( luminous ) we can say : * * DEFINE_CEPH_FEATURE_RETIRED ( 2 , 1 , MONCLOCKCHECK , JEWEL , LUMINOUS ) * * - The bit can be reused in the first post - luminous release , 13 . 0 . z * ( m ) . * * This ensures that no two versions who have different meanings for * the bit ever speak to each other . 0 , 1 , UID)1 , 1 , NOSRCADDR)2 , 1 , MONCLOCKCHECK, JEWEL, LUMINOUS)2 , 3 , SERVER_NAUTILUS)3 , 1 , FLOCK)4 , 1 , SUBSCRIBE2)5 , 1 , MONNAMES)6 , 1 , RECONNECT_SEQ)7 , 1 , DIRLAYOUTHASH)8 , 1 , OBJECTLOCATOR)9 , 1 , PGID64)10 , 1 , INCSUBOSDMAP)11 , 1 , PGPOOL3)12 , 1 , OSDREPLYMUX)13 , 1 , OSDENC)14 , 1 , OMAP, HAMMER, JEWEL)14 , 2 , SERVER_KRAKEN)15 , 1 , MONENC)16 , 1 , QUERY_T, JEWEL, LUMINOUS)17 , 1 , INDEP_PG_MAP, JEWEL, LUMINOUS)18 , 1 , CRUSH_TUNABLES)19 , 1 , CHUNKY_SCRUB, JEWEL, LUMINOUS)20 , 1 , MON_NULLROUTE, JEWEL, LUMINOUS)21 , 1 , MON_GV, HAMMER, JEWEL)21 , 2 , SERVER_LUMINOUS)21 , 2 , RESEND_ON_SPLIT) // overlap 21 , 2 , RADOS_BACKOFF) // overlap 21 , 2 , OSDMAP_PG_UPMAP) // overlap 21 , 2 , CRUSH_CHOOSE_ARGS) // overlap 22 , 1 , BACKFILL_RESERVATION, JEWEL, LUMINOUS)23 , 1 , MSG_AUTH)24 , 1 , RECOVERY_RESERVATION, JEWEL, LUNINOUS)25 , 1 , CRUSH_TUNABLES2)26 , 1 , CREATEPOOLID)27 , 1 , REPLY_CREATE_INODE)28 , 1 , OSD_HBMSGS, HAMMER, JEWEL)28 , 2 , SERVER_MIMIC)29 , 1 , MDSENC)30 , 1 , OSDHASHPSPOOL)31 , 1 , MON_SINGLE_PAXOS) // deprecate me 32 , 1 , OSD_SNAPMAPPER, JEWEL, LUMINOUS)33 , 1 , MON_SCRUB, JEWEL, LUMINOUS)34 , 1 , OSD_PACKED_RECOVERY, JEWEL, LUMINOUS)35 , 1 , OSD_CACHEPOOL)36 , 1 , CRUSH_V2)37 , 1 , EXPORT_PEER)38 , 1 , OSD_ERASURE_CODES)38 , 1 , OSD_OSD_TMAP2OMAP) // overlap 39 , 1 , OSDMAP_ENC)40 , 1 , MDS_INLINE_DATA)41 , 1 , CRUSH_TUNABLES3)41 , 1 , OSD_PRIMARY_AFFINITY) // overlap 42 , 1 , MSGR_KEEPALIVE2)43 , 1 , OSD_POOLRESEND)44 , 1 , ERASURE_CODE_PLUGINS_V2)45 , 1 , OSD_SET_ALLOC_HINT, JEWEL, LUMINOUS)46 , 1 , OSD_FADVISE_FLAGS)46 , 1 , OSD_REPOP, JEWEL, LUMINOUS) // overlap 46 , 1 , OSD_OBJECT_DIGEST, JEWEL, LUMINOUS) // overlap 46 , 1 , OSD_TRANSACTION_MAY_LAYOUT, JEWEL, LUMINOUS) // overlap 47 , 1 , MDS_QUOTA)48 , 1 , CRUSH_V4)49 , 1 , OSD_MIN_SIZE_RECOVERY, JEWEL, LUMINOUS)49 , 1 , OSD_PROXY_FEATURES, JEWEL, LUMINOUS) // overlap 50 , 1 , MON_METADATA)51 , 1 , OSD_BITWISE_HOBJ_SORT)52 , 1 , OSD_PROXY_WRITE_FEATURES)53 , 1 , ERASURE_CODE_PLUGINS_V3)54 , 1 , OSD_HITSET_GMT)55 , 1 , HAMMER_0_94_4)56 , 1 , NEW_OSDOP_ENCODING)57 , 1 , MON_STATEFUL_SUB)57 , 1 , MON_ROUTE_OSDMAP) // overlap 57 , 1 , OSDSUBOP_NO_SNAPCONTEXT) // overlap 57 , 1 , SERVER_JEWEL) // overlap 58 , 1 , CRUSH_TUNABLES5)58 , 1 , NEW_OSDOPREPLY_ENCODING) // overlap 58 , 1 , FS_FILE_LAYOUT_V2) // overlap 59 , 1 , FS_BTIME)59 , 1 , FS_CHANGE_ATTR) // overlap 59 , 1 , MSG_ADDR2) // overlap 60 , 1 , OSD_RECOVERY_DELETES) // *do not share this bit* 61 , 1 , CEPHX_V2) // *do not share this bit* 62 , 1 , RESERVED) // do not use; used as a sentinal 63 , 1 , RESERVED_BROKEN, LUMINOUS) // client-facing /* * Features supported . #define CEPH_FEATURES_SUPPORTED_DEFAULT \#define CEPH_FEATURES_REQUIRED_DEFAULT 0 #endif
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