From a5cbd5fc22d5043a8a76e15d75d031fe24d1f69c Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Fri, 30 Oct 2020 13:30:51 +0100 Subject: libceph, ceph: get and handle cluster maps with addrvecs 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 23c625ce3065 ("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 --- include/linux/ceph/decode.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux/ceph/decode.h') diff --git a/include/linux/ceph/decode.h b/include/linux/ceph/decode.h index 450384fe487c..9a934e04f841 100644 --- a/include/linux/ceph/decode.h +++ b/include/linux/ceph/decode.h @@ -220,6 +220,7 @@ static inline void ceph_encode_timespec64(struct ceph_timespec *tv, */ #define CEPH_ENTITY_ADDR_TYPE_NONE 0 #define CEPH_ENTITY_ADDR_TYPE_LEGACY __cpu_to_le32(1) +#define CEPH_ENTITY_ADDR_TYPE_MSGR2 __cpu_to_le32(2) static inline void ceph_encode_banner_addr(struct ceph_entity_addr *a) { @@ -239,6 +240,9 @@ static inline void ceph_decode_banner_addr(struct ceph_entity_addr *a) extern int ceph_decode_entity_addr(void **p, void *end, struct ceph_entity_addr *addr); +int ceph_decode_entity_addrvec(void **p, void *end, bool msgr2, + struct ceph_entity_addr *addr); + /* * encoders */ -- cgit v1.2.3