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libceph, ceph: get and handle cluster maps with addrvecs

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In preparation for msgr2, make the cluster send us maps with addrvecs
including both LEGACY and MSGR2 addrs instead of a single LEGACY addr.
This means advertising support for SERVER_NAUTILUS and also some older
features: SERVER_MIMIC, MONENC and MONNAMES.

MONNAMES and MONENC are actually pre-argonaut, we just never updated
ceph_monmap_decode() for them.  Decoding is unconditional, see commit
23c625ce30 ("libceph: assume argonaut on the server side").

SERVER_MIMIC doesn't bear any meaning for the kernel client.

Since ceph_decode_entity_addrvec() is guarded by encoding version
checks (and in msgr2 case it is guarded implicitly by the fact that
server is speaking msgr2), we assume MSG_ADDR2 for it.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Ilya Dryomov 2020-10-30 13:30:51 +01:00
parent 8921f25116
commit a5cbd5fc22
10 changed files with 222 additions and 72 deletions
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4
include/linux/ceph/osdmap.h
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@ -251,8 +251,8 @@ static inline int ceph_decode_pgid(void **p, void *end, struct ceph_pg *pgid)
}
struct ceph_osdmap *ceph_osdmap_alloc(void);
extern struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end);
struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end, bool msgr2);
struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, bool msgr2,
struct ceph_osdmap *map);
extern void ceph_osdmap_destroy(struct ceph_osdmap *map);