summaryrefslogtreecommitdiffstats
path: root/fs/ceph/messenger.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ceph/messenger.h')
-rw-r--r--fs/ceph/messenger.h257
1 files changed, 0 insertions, 257 deletions
diff --git a/fs/ceph/messenger.h b/fs/ceph/messenger.h
deleted file mode 100644
index 5a79450604ef..000000000000
--- a/fs/ceph/messenger.h
+++ /dev/null
@@ -1,257 +0,0 @@
-#ifndef __FS_CEPH_MESSENGER_H
-#define __FS_CEPH_MESSENGER_H
-
-#include <linux/kref.h>
-#include <linux/mutex.h>
-#include <linux/net.h>
-#include <linux/radix-tree.h>
-#include <linux/uio.h>
-#include <linux/version.h>
-#include <linux/workqueue.h>
-
-#include "types.h"
-#include "buffer.h"
-
-struct ceph_msg;
-struct ceph_connection;
-
-extern struct workqueue_struct *ceph_msgr_wq; /* receive work queue */
-
-/*
- * Ceph defines these callbacks for handling connection events.
- */
-struct ceph_connection_operations {
- struct ceph_connection *(*get)(struct ceph_connection *);
- void (*put)(struct ceph_connection *);
-
- /* handle an incoming message. */
- void (*dispatch) (struct ceph_connection *con, struct ceph_msg *m);
-
- /* authorize an outgoing connection */
- int (*get_authorizer) (struct ceph_connection *con,
- void **buf, int *len, int *proto,
- void **reply_buf, int *reply_len, int force_new);
- int (*verify_authorizer_reply) (struct ceph_connection *con, int len);
- int (*invalidate_authorizer)(struct ceph_connection *con);
-
- /* protocol version mismatch */
- void (*bad_proto) (struct ceph_connection *con);
-
- /* there was some error on the socket (disconnect, whatever) */
- void (*fault) (struct ceph_connection *con);
-
- /* a remote host as terminated a message exchange session, and messages
- * we sent (or they tried to send us) may be lost. */
- void (*peer_reset) (struct ceph_connection *con);
-
- struct ceph_msg * (*alloc_msg) (struct ceph_connection *con,
- struct ceph_msg_header *hdr,
- int *skip);
-};
-
-/* use format string %s%d */
-#define ENTITY_NAME(n) ceph_entity_type_name((n).type), le64_to_cpu((n).num)
-
-struct ceph_messenger {
- struct ceph_entity_inst inst; /* my name+address */
- struct ceph_entity_addr my_enc_addr;
- struct page *zero_page; /* used in certain error cases */
-
- bool nocrc;
-
- /*
- * the global_seq counts connections i (attempt to) initiate
- * in order to disambiguate certain connect race conditions.
- */
- u32 global_seq;
- spinlock_t global_seq_lock;
-};
-
-/*
- * a single message. it contains a header (src, dest, message type, etc.),
- * footer (crc values, mainly), a "front" message body, and possibly a
- * data payload (stored in some number of pages).
- */
-struct ceph_msg {
- struct ceph_msg_header hdr; /* header */
- struct ceph_msg_footer footer; /* footer */
- struct kvec front; /* unaligned blobs of message */
- struct ceph_buffer *middle;
- struct page **pages; /* data payload. NOT OWNER. */
- unsigned nr_pages; /* size of page array */
- struct ceph_pagelist *pagelist; /* instead of pages */
- struct list_head list_head;
- struct kref kref;
- struct bio *bio; /* instead of pages/pagelist */
- struct bio *bio_iter; /* bio iterator */
- int bio_seg; /* current bio segment */
- struct ceph_pagelist *trail; /* the trailing part of the data */
- bool front_is_vmalloc;
- bool more_to_follow;
- bool needs_out_seq;
- int front_max;
-
- struct ceph_msgpool *pool;
-};
-
-struct ceph_msg_pos {
- int page, page_pos; /* which page; offset in page */
- int data_pos; /* offset in data payload */
- int did_page_crc; /* true if we've calculated crc for current page */
-};
-
-/* ceph connection fault delay defaults, for exponential backoff */
-#define BASE_DELAY_INTERVAL (HZ/2)
-#define MAX_DELAY_INTERVAL (5 * 60 * HZ)
-
-/*
- * ceph_connection state bit flags
- *
- * QUEUED and BUSY are used together to ensure that only a single
- * thread is currently opening, reading or writing data to the socket.
- */
-#define LOSSYTX 0 /* we can close channel or drop messages on errors */
-#define CONNECTING 1
-#define NEGOTIATING 2
-#define KEEPALIVE_PENDING 3
-#define WRITE_PENDING 4 /* we have data ready to send */
-#define QUEUED 5 /* there is work queued on this connection */
-#define BUSY 6 /* work is being done */
-#define STANDBY 8 /* no outgoing messages, socket closed. we keep
- * the ceph_connection around to maintain shared
- * state with the peer. */
-#define CLOSED 10 /* we've closed the connection */
-#define SOCK_CLOSED 11 /* socket state changed to closed */
-#define OPENING 13 /* open connection w/ (possibly new) peer */
-#define DEAD 14 /* dead, about to kfree */
-
-/*
- * A single connection with another host.
- *
- * We maintain a queue of outgoing messages, and some session state to
- * ensure that we can preserve the lossless, ordered delivery of
- * messages in the case of a TCP disconnect.
- */
-struct ceph_connection {
- void *private;
- atomic_t nref;
-
- const struct ceph_connection_operations *ops;
-
- struct ceph_messenger *msgr;
- struct socket *sock;
- unsigned long state; /* connection state (see flags above) */
- const char *error_msg; /* error message, if any */
-
- struct ceph_entity_addr peer_addr; /* peer address */
- struct ceph_entity_name peer_name; /* peer name */
- struct ceph_entity_addr peer_addr_for_me;
- unsigned peer_features;
- u32 connect_seq; /* identify the most recent connection
- attempt for this connection, client */
- u32 peer_global_seq; /* peer's global seq for this connection */
-
- int auth_retry; /* true if we need a newer authorizer */
- void *auth_reply_buf; /* where to put the authorizer reply */
- int auth_reply_buf_len;
-
- struct mutex mutex;
-
- /* out queue */
- struct list_head out_queue;
- struct list_head out_sent; /* sending or sent but unacked */
- u64 out_seq; /* last message queued for send */
- bool out_keepalive_pending;
-
- u64 in_seq, in_seq_acked; /* last message received, acked */
-
- /* connection negotiation temps */
- char in_banner[CEPH_BANNER_MAX_LEN];
- union {
- struct { /* outgoing connection */
- struct ceph_msg_connect out_connect;
- struct ceph_msg_connect_reply in_reply;
- };
- struct { /* incoming */
- struct ceph_msg_connect in_connect;
- struct ceph_msg_connect_reply out_reply;
- };
- };
- struct ceph_entity_addr actual_peer_addr;
-
- /* message out temps */
- struct ceph_msg *out_msg; /* sending message (== tail of
- out_sent) */
- bool out_msg_done;
- struct ceph_msg_pos out_msg_pos;
-
- struct kvec out_kvec[8], /* sending header/footer data */
- *out_kvec_cur;
- int out_kvec_left; /* kvec's left in out_kvec */
- int out_skip; /* skip this many bytes */
- int out_kvec_bytes; /* total bytes left */
- bool out_kvec_is_msg; /* kvec refers to out_msg */
- int out_more; /* there is more data after the kvecs */
- __le64 out_temp_ack; /* for writing an ack */
-
- /* message in temps */
- struct ceph_msg_header in_hdr;
- struct ceph_msg *in_msg;
- struct ceph_msg_pos in_msg_pos;
- u32 in_front_crc, in_middle_crc, in_data_crc; /* calculated crc */
-
- char in_tag; /* protocol control byte */
- int in_base_pos; /* bytes read */
- __le64 in_temp_ack; /* for reading an ack */
-
- struct delayed_work work; /* send|recv work */
- unsigned long delay; /* current delay interval */
-};
-
-
-extern const char *pr_addr(const struct sockaddr_storage *ss);
-extern int ceph_parse_ips(const char *c, const char *end,
- struct ceph_entity_addr *addr,
- int max_count, int *count);
-
-
-extern int ceph_msgr_init(void);
-extern void ceph_msgr_exit(void);
-extern void ceph_msgr_flush(void);
-
-extern struct ceph_messenger *ceph_messenger_create(
- struct ceph_entity_addr *myaddr);
-extern void ceph_messenger_destroy(struct ceph_messenger *);
-
-extern void ceph_con_init(struct ceph_messenger *msgr,
- struct ceph_connection *con);
-extern void ceph_con_open(struct ceph_connection *con,
- struct ceph_entity_addr *addr);
-extern bool ceph_con_opened(struct ceph_connection *con);
-extern void ceph_con_close(struct ceph_connection *con);
-extern void ceph_con_send(struct ceph_connection *con, struct ceph_msg *msg);
-extern void ceph_con_revoke(struct ceph_connection *con, struct ceph_msg *msg);
-extern void ceph_con_revoke_message(struct ceph_connection *con,
- struct ceph_msg *msg);
-extern void ceph_con_keepalive(struct ceph_connection *con);
-extern struct ceph_connection *ceph_con_get(struct ceph_connection *con);
-extern void ceph_con_put(struct ceph_connection *con);
-
-extern struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags);
-extern void ceph_msg_kfree(struct ceph_msg *m);
-
-
-static inline struct ceph_msg *ceph_msg_get(struct ceph_msg *msg)
-{
- kref_get(&msg->kref);
- return msg;
-}
-extern void ceph_msg_last_put(struct kref *kref);
-static inline void ceph_msg_put(struct ceph_msg *msg)
-{
- kref_put(&msg->kref, ceph_msg_last_put);
-}
-
-extern void ceph_msg_dump(struct ceph_msg *msg);
-
-#endif
OpenPOWER on IntegriCloud