1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __CEPH_FEATURES
3#define __CEPH_FEATURES
4
5/*
6 * Each time we reclaim bits for reuse we need to specify another bit
7 * that, if present, indicates we have the new incarnation of that
8 * feature. Base case is 1 (first use).
9 */
10#define CEPH_FEATURE_INCARNATION_1 (0ull)
11#define CEPH_FEATURE_INCARNATION_2 (1ull<<57) // SERVER_JEWEL
12#define CEPH_FEATURE_INCARNATION_3 ((1ull<<57)|(1ull<<28)) // SERVER_MIMIC
13
14#define DEFINE_CEPH_FEATURE(bit, incarnation, name) \
15 static const uint64_t __maybe_unused CEPH_FEATURE_##name = (1ULL<<bit); \
16 static const uint64_t __maybe_unused CEPH_FEATUREMASK_##name = \
17 (1ULL<<bit | CEPH_FEATURE_INCARNATION_##incarnation);
18
19/* this bit is ignored but still advertised by release *when* */
20#define DEFINE_CEPH_FEATURE_DEPRECATED(bit, incarnation, name, when) \
21 static const uint64_t __maybe_unused DEPRECATED_CEPH_FEATURE_##name = (1ULL<<bit); \
22 static const uint64_t __maybe_unused DEPRECATED_CEPH_FEATUREMASK_##name = \
23 (1ULL<<bit | CEPH_FEATURE_INCARNATION_##incarnation);
24
25/*
26 * this bit is ignored by release *unused* and not advertised by
27 * release *unadvertised*
28 */
29#define DEFINE_CEPH_FEATURE_RETIRED(bit, inc, name, unused, unadvertised)
30
31
32/*
33 * test for a feature. this test is safer than a typical mask against
34 * the bit because it ensures that we have the bit AND the marker for the
35 * bit's incarnation. this must be used in any case where the features
36 * bits may include an old meaning of the bit.
37 */
38#define CEPH_HAVE_FEATURE(x, name) \
39 (((x) & (CEPH_FEATUREMASK_##name)) == (CEPH_FEATUREMASK_##name))
40
41
42/*
43 * Notes on deprecation:
44 *
45 * A *major* release is a release through which all upgrades must pass
46 * (e.g., jewel). For example, no pre-jewel server will ever talk to
47 * a post-jewel server (mon, osd, etc).
48 *
49 * For feature bits used *only* on the server-side:
50 *
51 * - In the first phase we indicate that a feature is DEPRECATED as of
52 * a particular release. This is the first major release X (say,
53 * jewel) that does not depend on its peers advertising the feature.
54 * That is, it safely assumes its peers all have the feature. We
55 * indicate this with the DEPRECATED macro. For example,
56 *
57 * DEFINE_CEPH_FEATURE_DEPRECATED( 2, 1, MONCLOCKCHECK, JEWEL)
58 *
59 * because 10.2.z (jewel) did not care if its peers advertised this
60 * feature bit.
61 *
62 * - In the second phase we stop advertising the bit and call it
63 * RETIRED. This can normally be done in the *next* major release
64 * following the one in which we marked the feature DEPRECATED. In
65 * the above example, for 12.0.z (luminous) we can say:
66 *
67 * DEFINE_CEPH_FEATURE_RETIRED( 2, 1, MONCLOCKCHECK, JEWEL, LUMINOUS)
68 *
69 * - The bit can be reused in the first post-luminous release, 13.0.z
70 * (m).
71 *
72 * This ensures that no two versions who have different meanings for
73 * the bit ever speak to each other.
74 */
75
76DEFINE_CEPH_FEATURE( 0, 1, UID)
77DEFINE_CEPH_FEATURE( 1, 1, NOSRCADDR)
78DEFINE_CEPH_FEATURE_RETIRED( 2, 1, MONCLOCKCHECK, JEWEL, LUMINOUS)
79DEFINE_CEPH_FEATURE( 2, 3, SERVER_NAUTILUS)
80DEFINE_CEPH_FEATURE( 3, 1, FLOCK)
81DEFINE_CEPH_FEATURE( 4, 1, SUBSCRIBE2)
82DEFINE_CEPH_FEATURE( 5, 1, MONNAMES)
83DEFINE_CEPH_FEATURE( 6, 1, RECONNECT_SEQ)
84DEFINE_CEPH_FEATURE( 7, 1, DIRLAYOUTHASH)
85DEFINE_CEPH_FEATURE( 8, 1, OBJECTLOCATOR)
86DEFINE_CEPH_FEATURE( 9, 1, PGID64)
87DEFINE_CEPH_FEATURE(10, 1, INCSUBOSDMAP)
88DEFINE_CEPH_FEATURE(11, 1, PGPOOL3)
89DEFINE_CEPH_FEATURE(12, 1, OSDREPLYMUX)
90DEFINE_CEPH_FEATURE(13, 1, OSDENC)
91DEFINE_CEPH_FEATURE_RETIRED(14, 1, OMAP, HAMMER, JEWEL)
92DEFINE_CEPH_FEATURE(14, 2, SERVER_KRAKEN)
93DEFINE_CEPH_FEATURE(15, 1, MONENC)
94DEFINE_CEPH_FEATURE_RETIRED(16, 1, QUERY_T, JEWEL, LUMINOUS)
95
96DEFINE_CEPH_FEATURE_RETIRED(17, 1, INDEP_PG_MAP, JEWEL, LUMINOUS)
97
98DEFINE_CEPH_FEATURE(18, 1, CRUSH_TUNABLES)
99DEFINE_CEPH_FEATURE_RETIRED(19, 1, CHUNKY_SCRUB, JEWEL, LUMINOUS)
100
101DEFINE_CEPH_FEATURE_RETIRED(20, 1, MON_NULLROUTE, JEWEL, LUMINOUS)
102
103DEFINE_CEPH_FEATURE_RETIRED(21, 1, MON_GV, HAMMER, JEWEL)
104DEFINE_CEPH_FEATURE(21, 2, SERVER_LUMINOUS)
105DEFINE_CEPH_FEATURE(21, 2, RESEND_ON_SPLIT) // overlap
106DEFINE_CEPH_FEATURE(21, 2, RADOS_BACKOFF) // overlap
107DEFINE_CEPH_FEATURE(21, 2, OSDMAP_PG_UPMAP) // overlap
108DEFINE_CEPH_FEATURE(21, 2, CRUSH_CHOOSE_ARGS) // overlap
109DEFINE_CEPH_FEATURE_RETIRED(22, 1, BACKFILL_RESERVATION, JEWEL, LUMINOUS)
110
111DEFINE_CEPH_FEATURE(23, 1, MSG_AUTH)
112DEFINE_CEPH_FEATURE_RETIRED(24, 1, RECOVERY_RESERVATION, JEWEL, LUNINOUS)
113
114DEFINE_CEPH_FEATURE(25, 1, CRUSH_TUNABLES2)
115DEFINE_CEPH_FEATURE(26, 1, CREATEPOOLID)
116DEFINE_CEPH_FEATURE(27, 1, REPLY_CREATE_INODE)
117DEFINE_CEPH_FEATURE_RETIRED(28, 1, OSD_HBMSGS, HAMMER, JEWEL)
118DEFINE_CEPH_FEATURE(28, 2, SERVER_MIMIC)
119DEFINE_CEPH_FEATURE(29, 1, MDSENC)
120DEFINE_CEPH_FEATURE(30, 1, OSDHASHPSPOOL)
121DEFINE_CEPH_FEATURE(31, 1, MON_SINGLE_PAXOS) // deprecate me
122DEFINE_CEPH_FEATURE_RETIRED(32, 1, OSD_SNAPMAPPER, JEWEL, LUMINOUS)
123
124DEFINE_CEPH_FEATURE_RETIRED(33, 1, MON_SCRUB, JEWEL, LUMINOUS)
125
126DEFINE_CEPH_FEATURE_RETIRED(34, 1, OSD_PACKED_RECOVERY, JEWEL, LUMINOUS)
127
128DEFINE_CEPH_FEATURE(35, 1, OSD_CACHEPOOL)
129DEFINE_CEPH_FEATURE(36, 1, CRUSH_V2)
130DEFINE_CEPH_FEATURE(37, 1, EXPORT_PEER)
131DEFINE_CEPH_FEATURE(38, 1, OSD_ERASURE_CODES)
132DEFINE_CEPH_FEATURE(38, 1, OSD_OSD_TMAP2OMAP) // overlap
133DEFINE_CEPH_FEATURE(39, 1, OSDMAP_ENC)
134DEFINE_CEPH_FEATURE(40, 1, MDS_INLINE_DATA)
135DEFINE_CEPH_FEATURE(41, 1, CRUSH_TUNABLES3)
136DEFINE_CEPH_FEATURE(41, 1, OSD_PRIMARY_AFFINITY) // overlap
137DEFINE_CEPH_FEATURE(42, 1, MSGR_KEEPALIVE2)
138DEFINE_CEPH_FEATURE(43, 1, OSD_POOLRESEND)
139DEFINE_CEPH_FEATURE(44, 1, ERASURE_CODE_PLUGINS_V2)
140DEFINE_CEPH_FEATURE_RETIRED(45, 1, OSD_SET_ALLOC_HINT, JEWEL, LUMINOUS)
141
142DEFINE_CEPH_FEATURE(46, 1, OSD_FADVISE_FLAGS)
143DEFINE_CEPH_FEATURE_RETIRED(46, 1, OSD_REPOP, JEWEL, LUMINOUS) // overlap
144DEFINE_CEPH_FEATURE_RETIRED(46, 1, OSD_OBJECT_DIGEST, JEWEL, LUMINOUS) // overlap
145DEFINE_CEPH_FEATURE_RETIRED(46, 1, OSD_TRANSACTION_MAY_LAYOUT, JEWEL, LUMINOUS) // overlap
146
147DEFINE_CEPH_FEATURE(47, 1, MDS_QUOTA)
148DEFINE_CEPH_FEATURE(48, 1, CRUSH_V4)
149DEFINE_CEPH_FEATURE_RETIRED(49, 1, OSD_MIN_SIZE_RECOVERY, JEWEL, LUMINOUS)
150DEFINE_CEPH_FEATURE_RETIRED(49, 1, OSD_PROXY_FEATURES, JEWEL, LUMINOUS) // overlap
151
152DEFINE_CEPH_FEATURE(50, 1, MON_METADATA)
153DEFINE_CEPH_FEATURE(51, 1, OSD_BITWISE_HOBJ_SORT)
154DEFINE_CEPH_FEATURE(52, 1, OSD_PROXY_WRITE_FEATURES)
155DEFINE_CEPH_FEATURE(53, 1, ERASURE_CODE_PLUGINS_V3)
156DEFINE_CEPH_FEATURE(54, 1, OSD_HITSET_GMT)
157DEFINE_CEPH_FEATURE(55, 1, HAMMER_0_94_4)
158DEFINE_CEPH_FEATURE(56, 1, NEW_OSDOP_ENCODING)
159DEFINE_CEPH_FEATURE(57, 1, MON_STATEFUL_SUB)
160DEFINE_CEPH_FEATURE(57, 1, MON_ROUTE_OSDMAP) // overlap
161DEFINE_CEPH_FEATURE(57, 1, OSDSUBOP_NO_SNAPCONTEXT) // overlap
162DEFINE_CEPH_FEATURE(57, 1, SERVER_JEWEL) // overlap
163DEFINE_CEPH_FEATURE(58, 1, CRUSH_TUNABLES5)
164DEFINE_CEPH_FEATURE(58, 1, NEW_OSDOPREPLY_ENCODING) // overlap
165DEFINE_CEPH_FEATURE(58, 1, FS_FILE_LAYOUT_V2) // overlap
166DEFINE_CEPH_FEATURE(59, 1, FS_BTIME)
167DEFINE_CEPH_FEATURE(59, 1, FS_CHANGE_ATTR) // overlap
168DEFINE_CEPH_FEATURE(59, 1, MSG_ADDR2) // overlap
169DEFINE_CEPH_FEATURE(60, 1, OSD_RECOVERY_DELETES) // *do not share this bit*
170DEFINE_CEPH_FEATURE(61, 1, CEPHX_V2) // *do not share this bit*
171
172DEFINE_CEPH_FEATURE(62, 1, RESERVED) // do not use; used as a sentinal
173DEFINE_CEPH_FEATURE_DEPRECATED(63, 1, RESERVED_BROKEN, LUMINOUS) // client-facing
174
175
176/*
177 * Features supported.
178 */
179#define CEPH_FEATURES_SUPPORTED_DEFAULT \
180 (CEPH_FEATURE_NOSRCADDR | \
181 CEPH_FEATURE_SERVER_NAUTILUS | \
182 CEPH_FEATURE_FLOCK | \
183 CEPH_FEATURE_SUBSCRIBE2 | \
184 CEPH_FEATURE_MONNAMES | \
185 CEPH_FEATURE_RECONNECT_SEQ | \
186 CEPH_FEATURE_DIRLAYOUTHASH | \
187 CEPH_FEATURE_PGID64 | \
188 CEPH_FEATURE_PGPOOL3 | \
189 CEPH_FEATURE_OSDENC | \
190 CEPH_FEATURE_MONENC | \
191 CEPH_FEATURE_CRUSH_TUNABLES | \
192 CEPH_FEATURE_SERVER_LUMINOUS | \
193 CEPH_FEATURE_RESEND_ON_SPLIT | \
194 CEPH_FEATURE_RADOS_BACKOFF | \
195 CEPH_FEATURE_OSDMAP_PG_UPMAP | \
196 CEPH_FEATURE_CRUSH_CHOOSE_ARGS | \
197 CEPH_FEATURE_MSG_AUTH | \
198 CEPH_FEATURE_CRUSH_TUNABLES2 | \
199 CEPH_FEATURE_REPLY_CREATE_INODE | \
200 CEPH_FEATURE_SERVER_MIMIC | \
201 CEPH_FEATURE_MDSENC | \
202 CEPH_FEATURE_OSDHASHPSPOOL | \
203 CEPH_FEATURE_OSD_CACHEPOOL | \
204 CEPH_FEATURE_CRUSH_V2 | \
205 CEPH_FEATURE_EXPORT_PEER | \
206 CEPH_FEATURE_OSDMAP_ENC | \
207 CEPH_FEATURE_MDS_INLINE_DATA | \
208 CEPH_FEATURE_CRUSH_TUNABLES3 | \
209 CEPH_FEATURE_OSD_PRIMARY_AFFINITY | \
210 CEPH_FEATURE_MSGR_KEEPALIVE2 | \
211 CEPH_FEATURE_OSD_POOLRESEND | \
212 CEPH_FEATURE_MDS_QUOTA | \
213 CEPH_FEATURE_CRUSH_V4 | \
214 CEPH_FEATURE_NEW_OSDOP_ENCODING | \
215 CEPH_FEATURE_SERVER_JEWEL | \
216 CEPH_FEATURE_MON_STATEFUL_SUB | \
217 CEPH_FEATURE_CRUSH_TUNABLES5 | \
218 CEPH_FEATURE_NEW_OSDOPREPLY_ENCODING | \
219 CEPH_FEATURE_MSG_ADDR2 | \
220 CEPH_FEATURE_CEPHX_V2)
221
222#define CEPH_FEATURES_REQUIRED_DEFAULT 0
223
224#endif
225

source code of linux/include/linux/ceph/ceph_features.h