Release 4.12 include/linux/ceph/msgr.h
#ifndef CEPH_MSGR_H
#define CEPH_MSGR_H
/*
* Data types for message passing layer used by Ceph.
*/
#define CEPH_MON_PORT 6789
/* default monitor port */
/*
* client-side processes will try to bind to ports in this
* range, simply for the benefit of tools like nmap or wireshark
* that would like to identify the protocol.
*/
#define CEPH_PORT_FIRST 6789
#define CEPH_PORT_START 6800
/* non-monitors start here */
#define CEPH_PORT_LAST 6900
/*
* tcp connection banner. include a protocol version. and adjust
* whenever the wire protocol changes. try to keep this string length
* constant.
*/
#define CEPH_BANNER "ceph v027"
#define CEPH_BANNER_MAX_LEN 30
/*
* Rollover-safe type and comparator for 32-bit sequence numbers.
* Comparator returns -1, 0, or 1.
*/
typedef __u32 ceph_seq_t;
static inline __s32 ceph_seq_cmp(__u32 a, __u32 b)
{
return (__s32)a - (__s32)b;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sage Weil | 24 | 100.00% | 1 | 100.00% |
| Total | 24 | 100.00% | 1 | 100.00% |
/*
* entity_name -- logical name for a process participating in the
* network, e.g. 'mds0' or 'osd3'.
*/
struct ceph_entity_name {
__u8 type; /* CEPH_ENTITY_TYPE_* */
__le64 num;
} __attribute__ ((packed));
#define CEPH_ENTITY_TYPE_MON 0x01
#define CEPH_ENTITY_TYPE_MDS 0x02
#define CEPH_ENTITY_TYPE_OSD 0x04
#define CEPH_ENTITY_TYPE_CLIENT 0x08
#define CEPH_ENTITY_TYPE_AUTH 0x20
#define CEPH_ENTITY_TYPE_ANY 0xFF
extern const char *ceph_entity_type_name(int type);
/*
* entity_addr -- network address
*/
struct ceph_entity_addr {
__le32 type;
__le32 nonce; /* unique id for process (e.g. pid) */
struct sockaddr_storage in_addr;
} __attribute__ ((packed));
struct ceph_entity_inst {
struct ceph_entity_name name;
struct ceph_entity_addr addr;
} __attribute__ ((packed));
/* used by message exchange protocol */
#define CEPH_MSGR_TAG_READY 1
/* server->client: ready for messages */
#define CEPH_MSGR_TAG_RESETSESSION 2
/* server->client: reset, try again */
#define CEPH_MSGR_TAG_WAIT 3
/* server->client: wait for racing
incoming connection */
#define CEPH_MSGR_TAG_RETRY_SESSION 4
/* server->client + cseq: try again
with higher cseq */
#define CEPH_MSGR_TAG_RETRY_GLOBAL 5
/* server->client + gseq: try again
with higher gseq */
#define CEPH_MSGR_TAG_CLOSE 6
/* closing pipe */
#define CEPH_MSGR_TAG_MSG 7
/* message */
#define CEPH_MSGR_TAG_ACK 8
/* message ack */
#define CEPH_MSGR_TAG_KEEPALIVE 9
/* just a keepalive byte! */
#define CEPH_MSGR_TAG_BADPROTOVER 10
/* bad protocol version */
#define CEPH_MSGR_TAG_BADAUTHORIZER 11
/* bad authorizer */
#define CEPH_MSGR_TAG_FEATURES 12
/* insufficient features */
#define CEPH_MSGR_TAG_SEQ 13
/* 64-bit int follows with seen seq number */
#define CEPH_MSGR_TAG_KEEPALIVE2 14
/* keepalive2 byte + ceph_timespec */
#define CEPH_MSGR_TAG_KEEPALIVE2_ACK 15
/* keepalive2 reply */
/*
* connection negotiation
*/
struct ceph_msg_connect {
__le64 features; /* supported feature bits */
__le32 host_type; /* CEPH_ENTITY_TYPE_* */
__le32 global_seq; /* count connections initiated by this host */
__le32 connect_seq; /* count connections initiated in this session */
__le32 protocol_version;
__le32 authorizer_protocol;
__le32 authorizer_len;
__u8 flags; /* CEPH_MSG_CONNECT_* */
} __attribute__ ((packed));
struct ceph_msg_connect_reply {
__u8 tag;
__le64 features; /* feature bits for this session */
__le32 global_seq;
__le32 connect_seq;
__le32 protocol_version;
__le32 authorizer_len;
__u8 flags;
} __attribute__ ((packed));
#define CEPH_MSG_CONNECT_LOSSY 1
/* messages i send may be safely dropped */
/*
* message header
*/
struct ceph_msg_header_old {
__le64 seq; /* message seq# for this session */
__le64 tid; /* transaction id */
__le16 type; /* message type */
__le16 priority; /* priority. higher value == higher priority */
__le16 version; /* version of message encoding */
__le32 front_len; /* bytes in main payload */
__le32 middle_len;/* bytes in middle payload */
__le32 data_len; /* bytes of data payload */
__le16 data_off; /* sender: include full offset;
receiver: mask against ~PAGE_MASK */
struct ceph_entity_inst src, orig_src;
__le32 reserved;
__le32 crc; /* header crc32c */
} __attribute__ ((packed));
struct ceph_msg_header {
__le64 seq; /* message seq# for this session */
__le64 tid; /* transaction id */
__le16 type; /* message type */
__le16 priority; /* priority. higher value == higher priority */
__le16 version; /* version of message encoding */
__le32 front_len; /* bytes in main payload */
__le32 middle_len;/* bytes in middle payload */
__le32 data_len; /* bytes of data payload */
__le16 data_off; /* sender: include full offset;
receiver: mask against ~PAGE_MASK */
struct ceph_entity_name src;
__le16 compat_version;
__le16 reserved;
__le32 crc; /* header crc32c */
} __attribute__ ((packed));
#define CEPH_MSG_PRIO_LOW 64
#define CEPH_MSG_PRIO_DEFAULT 127
#define CEPH_MSG_PRIO_HIGH 196
#define CEPH_MSG_PRIO_HIGHEST 255
/*
* follows data payload
*/
struct ceph_msg_footer_old {
__le32 front_crc, middle_crc, data_crc;
__u8 flags;
} __attribute__ ((packed));
struct ceph_msg_footer {
__le32 front_crc, middle_crc, data_crc;
// sig holds the 64 bits of the digital signature for the message PLR
__le64 sig;
__u8 flags;
} __attribute__ ((packed));
#define CEPH_MSG_FOOTER_COMPLETE (1<<0)
/* msg wasn't aborted */
#define CEPH_MSG_FOOTER_NOCRC (1<<1)
/* no data crc */
#define CEPH_MSG_FOOTER_SIGNED (1<<2)
/* msg was signed */
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sage Weil | 472 | 91.47% | 10 | 76.92% |
| Yan, Zheng | 40 | 7.75% | 2 | 15.38% |
| John Spray | 4 | 0.78% | 1 | 7.69% |
| Total | 516 | 100.00% | 13 | 100.00% |
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