Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 1 | #ifndef _FS_CEPH_MON_CLIENT_H |
| 2 | #define _FS_CEPH_MON_CLIENT_H |
| 3 | |
| 4 | #include <linux/completion.h> |
Sage Weil | 3143edd | 2010-03-24 21:43:33 -0700 | [diff] [blame] | 5 | #include <linux/kref.h> |
Sage Weil | 85ff03f | 2010-02-15 14:47:28 -0800 | [diff] [blame] | 6 | #include <linux/rbtree.h> |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 7 | |
| 8 | #include "messenger.h" |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 9 | |
| 10 | struct ceph_client; |
| 11 | struct ceph_mount_args; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 12 | struct ceph_auth_client; |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 13 | |
| 14 | /* |
| 15 | * The monitor map enumerates the set of all monitors. |
| 16 | */ |
| 17 | struct ceph_monmap { |
| 18 | struct ceph_fsid fsid; |
| 19 | u32 epoch; |
| 20 | u32 num_mon; |
| 21 | struct ceph_entity_inst mon_inst[0]; |
| 22 | }; |
| 23 | |
| 24 | struct ceph_mon_client; |
Yehuda Sadeh | f8c76f6 | 2010-04-22 15:40:37 -0700 | [diff] [blame^] | 25 | struct ceph_mon_generic_request; |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 26 | |
| 27 | |
| 28 | /* |
| 29 | * Generic mechanism for resending monitor requests. |
| 30 | */ |
| 31 | typedef void (*ceph_monc_request_func_t)(struct ceph_mon_client *monc, |
| 32 | int newmon); |
| 33 | |
| 34 | /* a pending monitor request */ |
| 35 | struct ceph_mon_request { |
| 36 | struct ceph_mon_client *monc; |
| 37 | struct delayed_work delayed_work; |
| 38 | unsigned long delay; |
| 39 | ceph_monc_request_func_t do_request; |
| 40 | }; |
| 41 | |
| 42 | /* |
Yehuda Sadeh | f8c76f6 | 2010-04-22 15:40:37 -0700 | [diff] [blame^] | 43 | * ceph_mon_generic_request is being used for the statfs and poolop requests |
| 44 | * which are bening done a bit differently because we need to get data back |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 45 | * to the caller |
| 46 | */ |
Yehuda Sadeh | f8c76f6 | 2010-04-22 15:40:37 -0700 | [diff] [blame^] | 47 | struct ceph_mon_generic_request { |
Sage Weil | 3143edd | 2010-03-24 21:43:33 -0700 | [diff] [blame] | 48 | struct kref kref; |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 49 | u64 tid; |
Sage Weil | 85ff03f | 2010-02-15 14:47:28 -0800 | [diff] [blame] | 50 | struct rb_node node; |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 51 | int result; |
Yehuda Sadeh | f8c76f6 | 2010-04-22 15:40:37 -0700 | [diff] [blame^] | 52 | void *buf; |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 53 | struct completion completion; |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 54 | struct ceph_msg *request; /* original request */ |
Sage Weil | 3143edd | 2010-03-24 21:43:33 -0700 | [diff] [blame] | 55 | struct ceph_msg *reply; /* and reply */ |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 56 | }; |
| 57 | |
| 58 | struct ceph_mon_client { |
| 59 | struct ceph_client *client; |
| 60 | struct ceph_monmap *monmap; |
| 61 | |
| 62 | struct mutex mutex; |
| 63 | struct delayed_work delayed_work; |
| 64 | |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 65 | struct ceph_auth_client *auth; |
Sage Weil | 7c315c5 | 2010-03-24 21:52:30 -0700 | [diff] [blame] | 66 | struct ceph_msg *m_auth, *m_auth_reply, *m_subscribe_ack; |
Sage Weil | 9bd2e6f | 2010-02-02 16:21:06 -0800 | [diff] [blame] | 67 | int pending_auth; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 68 | |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 69 | bool hunting; |
| 70 | int cur_mon; /* last monitor i contacted */ |
| 71 | unsigned long sub_sent, sub_renew_after; |
| 72 | struct ceph_connection *con; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 73 | bool have_fsid; |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 74 | |
Yehuda Sadeh | f8c76f6 | 2010-04-22 15:40:37 -0700 | [diff] [blame^] | 75 | /* pending generic requests */ |
| 76 | struct rb_root generic_request_tree; |
| 77 | int num_generic_requests; |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 78 | u64 last_tid; |
| 79 | |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 80 | /* mds/osd map */ |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 81 | int want_next_osdmap; /* 1 = want, 2 = want+asked */ |
| 82 | u32 have_osdmap, have_mdsmap; |
| 83 | |
Sage Weil | 039934b | 2009-11-12 15:05:52 -0800 | [diff] [blame] | 84 | #ifdef CONFIG_DEBUG_FS |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 85 | struct dentry *debugfs_file; |
Sage Weil | 039934b | 2009-11-12 15:05:52 -0800 | [diff] [blame] | 86 | #endif |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 87 | }; |
| 88 | |
| 89 | extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end); |
| 90 | extern int ceph_monmap_contains(struct ceph_monmap *m, |
| 91 | struct ceph_entity_addr *addr); |
| 92 | |
| 93 | extern int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl); |
| 94 | extern void ceph_monc_stop(struct ceph_mon_client *monc); |
| 95 | |
| 96 | /* |
| 97 | * The model here is to indicate that we need a new map of at least |
| 98 | * epoch @want, and also call in when we receive a map. We will |
| 99 | * periodically rerequest the map from the monitor cluster until we |
| 100 | * get what we want. |
| 101 | */ |
| 102 | extern int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 have); |
| 103 | extern int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 have); |
| 104 | |
| 105 | extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc); |
| 106 | |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 107 | extern int ceph_monc_do_statfs(struct ceph_mon_client *monc, |
| 108 | struct ceph_statfs *buf); |
| 109 | |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 110 | extern int ceph_monc_open_session(struct ceph_mon_client *monc); |
| 111 | |
Sage Weil | 9bd2e6f | 2010-02-02 16:21:06 -0800 | [diff] [blame] | 112 | extern int ceph_monc_validate_auth(struct ceph_mon_client *monc); |
| 113 | |
Sage Weil | ba75bb9 | 2009-10-06 11:31:11 -0700 | [diff] [blame] | 114 | |
| 115 | |
| 116 | #endif |