1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include <linux/kp30.h>
27 #include <linux/obd_support.h>
28 #include <linux/obd_class.h>
29 #include <portals/p30.h>
30 #include <linux/lustre_idl.h>
32 /* FOO_REQUEST_PORTAL is for incoming requests on the FOO
33 * FOO_REPLY_PORTAL is for incoming replies on the FOO
34 * FOO_BULK_PORTAL is for incoming bulk on the FOO
37 #define CONNMGR_REQUEST_PORTAL 1
38 #define CONNMGR_REPLY_PORTAL 2
39 #define OSC_REQUEST_PORTAL 3
40 #define OSC_REPLY_PORTAL 4
41 #define OSC_BULK_PORTAL 5
42 #define OST_REQUEST_PORTAL 6
43 #define OST_REPLY_PORTAL 7
44 #define OST_BULK_PORTAL 8
45 #define MDC_REQUEST_PORTAL 9
46 #define MDC_REPLY_PORTAL 10
47 #define MDC_BULK_PORTAL 11
48 #define MDS_REQUEST_PORTAL 12
49 #define MDS_REPLY_PORTAL 13
50 #define MDS_BULK_PORTAL 14
51 #define LDLM_REQUEST_PORTAL 15
52 #define LDLM_REPLY_PORTAL 16
53 #define LDLM_CLI_REQUEST_PORTAL 17
54 #define LDLM_CLI_REPLY_PORTAL 18
56 /* default rpc ring length */
57 #define RPC_RING_LENGTH 2
63 #define SVC_STOPPING 16
64 #define SVC_STOPPED 32
66 #define RECOVD_STOPPING 1 /* how cleanup tells recovd to quit */
67 #define RECOVD_IDLE 2 /* normal state */
68 #define RECOVD_STOPPED 4 /* after recovd has stopped */
69 #define RECOVD_FAIL 8 /* RPC timeout: wakeup recovd, sets flag */
70 #define RECOVD_TIMEOUT 16 /* set when recovd detects a timeout */
71 #define RECOVD_UPCALL_WAIT 32 /* an upcall has been placed */
72 #define RECOVD_UPCALL_ANSWER 64 /* an upcall has been answered */
74 #define LUSTRE_CONN_NEW 1
75 #define LUSTRE_CONN_CON 2
76 #define LUSTRE_CONN_RECOVD 3
77 #define LUSTRE_CONN_FULL 4
79 struct ptlrpc_connection {
80 struct list_head c_link;
81 struct lustre_peer c_peer;
82 __u8 c_local_uuid[37];
83 __u8 c_remote_uuid[37];
86 __u32 c_generation; /* changes upon new connection */
87 __u32 c_epoch; /* changes when peer changes */
88 __u32 c_bootcount; /* peer's boot count */
100 struct ptlrpc_client {
101 struct obd_device *cli_obd;
102 __u32 cli_request_portal;
103 __u32 cli_reply_portal;
105 __u64 cli_last_committed;
107 struct semaphore cli_rpc_sem; /* limits outstanding requests */
109 spinlock_t cli_lock; /* protects lists */
110 struct list_head cli_sending_head;
111 struct list_head cli_sent_head;
112 struct list_head cli_replied_head;
113 struct list_head cli_replay_head;
114 struct list_head cli_ha_item;
115 void (*cli_recover)(struct ptlrpc_client *);
117 struct recovd_obd *cli_recovd;
121 #define PTL_RPC_TYPE_REQUEST 2
122 #define PTL_RPC_TYPE_REPLY 3
124 /* state flags of requests */
125 #define PTL_RPC_FL_INTR (1 << 0)
126 #define PTL_RPC_FL_REPLY (1 << 1)
127 #define PTL_RPC_FL_SENT (1 << 2)
128 #define PTL_BULK_FL_SENT (1 << 3)
129 #define PTL_BULK_FL_RCVD (1 << 4)
130 #define PTL_RPC_FL_ERR (1 << 5)
131 #define PTL_RPC_FL_TIMEOUT (1 << 6)
132 #define PTL_RPC_FL_RESEND (1 << 7)
133 #define PTL_RPC_FL_COMMITTED (1 << 8)
134 #define PTL_RPC_FL_FINISHED (1 << 9)
135 #define PTL_RPC_FL_RETAIN (1 << 10)
137 struct ptlrpc_request {
138 int rq_type; /* one of PTL_RPC_REQUEST, PTL_RPC_REPLY, PTL_RPC_BULK */
140 struct list_head rq_list;
141 struct obd_device *rq_obd;
145 atomic_t rq_refcount;
148 struct lustre_msg *rq_reqmsg;
151 struct lustre_msg *rq_repmsg;
159 // void * rq_reply_handle;
160 wait_queue_head_t rq_wait_for_rep;
163 ptl_md_t rq_reply_md;
164 ptl_handle_md_t rq_reply_md_h;
165 ptl_handle_me_t rq_reply_me_h;
167 /* outgoing req/rep */
169 ptl_handle_md_t rq_req_md_h;
171 struct ptlrpc_connection *rq_connection;
172 struct ptlrpc_client *rq_client;
175 struct ptlrpc_bulk_desc {
177 struct ptlrpc_connection *b_connection;
181 int (*b_cb)(struct ptlrpc_bulk_desc *, void *);
183 struct obd_conn b_conn;
186 wait_queue_head_t b_waitq;
189 ptl_handle_md_t b_md_h;
190 ptl_handle_me_t b_me_h;
193 struct ptlrpc_service {
197 /* incoming request buffers */
198 /* FIXME: perhaps a list of EQs, if multiple NIs are used? */
199 char *srv_buf[RPC_RING_LENGTH];
200 __u32 srv_ref_count[RPC_RING_LENGTH];
201 ptl_handle_me_t srv_me_h[RPC_RING_LENGTH];
203 __u32 srv_ring_length;
204 __u32 srv_req_portal;
205 __u32 srv_rep_portal;
210 ptl_handle_eq_t srv_eq_h;
213 struct lustre_peer srv_self;
214 ptl_process_id_t srv_id;
216 struct task_struct *srv_thread;
217 wait_queue_head_t srv_waitq;
218 wait_queue_head_t srv_ctl_waitq;
221 struct list_head srv_reqs;
223 int (*srv_handler)(struct obd_device *obddev,
224 struct ptlrpc_service *svc,
225 struct ptlrpc_request *req);
228 typedef int (*svc_handler_t)(struct obd_device *obddev,
229 struct ptlrpc_service *svc,
230 struct ptlrpc_request *req);
232 /* rpc/connection.c */
233 struct ptlrpc_connection *ptlrpc_get_connection(struct lustre_peer *peer);
234 int ptlrpc_put_connection(struct ptlrpc_connection *c);
235 struct ptlrpc_connection *ptlrpc_connection_addref(struct ptlrpc_connection *);
236 void ptlrpc_init_connection(void);
237 void ptlrpc_cleanup_connection(void);
240 int ptlrpc_check_bulk_sent(struct ptlrpc_bulk_desc *);
241 int ptlrpc_send_bulk(struct ptlrpc_bulk_desc *, int portal);
242 int ptlrpc_register_bulk(struct ptlrpc_bulk_desc *);
243 int ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *bulk);
244 int ptlrpc_reply(struct ptlrpc_service *svc, struct ptlrpc_request *req);
245 int ptlrpc_error(struct ptlrpc_service *svc, struct ptlrpc_request *req);
246 void ptlrpc_resend_req(struct ptlrpc_request *request);
247 int ptl_send_rpc(struct ptlrpc_request *request);
248 void ptlrpc_link_svc_me(struct ptlrpc_service *service, int i);
251 void ptlrpc_init_client(struct recovd_obd *,
252 void (*recover)(struct ptlrpc_client *),
253 int req_portal, int rep_portal,
254 struct ptlrpc_client *);
255 void ptlrpc_cleanup_client(struct ptlrpc_client *cli);
256 __u8 *ptlrpc_req_to_uuid(struct ptlrpc_request *req);
257 struct ptlrpc_connection *ptlrpc_uuid_to_connection(char *uuid);
258 int ptlrpc_queue_wait(struct ptlrpc_request *req);
259 struct ptlrpc_request *ptlrpc_prep_req(struct ptlrpc_client *cl,
260 struct ptlrpc_connection *u, int opcode,
261 int count, int *lengths, char **bufs);
262 void ptlrpc_free_bulk(struct ptlrpc_bulk_desc *bulk);
263 void ptlrpc_free_req(struct ptlrpc_request *request);
264 void ptlrpc_req_finished(struct ptlrpc_request *request);
265 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk(struct ptlrpc_connection *);
266 int ptlrpc_check_status(struct ptlrpc_request *req, int err);
269 struct ptlrpc_service *
270 ptlrpc_init_svc(__u32 bufsize, int req_portal, int rep_portal, char *uuid,
272 void ptlrpc_stop_thread(struct ptlrpc_service *svc);
273 int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc,
275 int rpc_unregister_service(struct ptlrpc_service *service);
277 struct ptlrpc_svc_data {
279 struct ptlrpc_service *svc;
280 struct obd_device *dev;
283 /* rpc/pack_generic.c */
284 int lustre_pack_msg(int count, int *lens, char **bufs, int *len,
285 struct lustre_msg **msg);
286 int lustre_msg_size(int count, int *lengths);
287 int lustre_unpack_msg(struct lustre_msg *m, int len);
288 void *lustre_msg_buf(struct lustre_msg *m, int n);