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>
31 #include <linux/lustre_ha.h>
33 /* FOO_REQUEST_PORTAL is for incoming requests on the FOO
34 * FOO_REPLY_PORTAL is for incoming replies on the FOO
35 * FOO_BULK_PORTAL is for incoming bulk on the FOO
38 #define OSC_REQUEST_PORTAL 1
39 #define OSC_REPLY_PORTAL 2
40 #define OSC_BULK_PORTAL 3
42 #define OST_REQUEST_PORTAL 4
43 #define OST_REPLY_PORTAL 5
44 #define OST_BULK_PORTAL 6
46 #define MDC_REQUEST_PORTAL 7
47 #define MDC_REPLY_PORTAL 8
48 #define MDC_BULK_PORTAL 9
50 #define MDS_REQUEST_PORTAL 10
51 #define MDS_REPLY_PORTAL 11
52 #define MDS_BULK_PORTAL 12
54 #define LDLM_REQUEST_PORTAL 13
55 #define LDLM_REPLY_PORTAL 14
57 /* default rpc ring length */
58 #define RPC_RING_LENGTH 2
60 #define SVC_STOPPING 1
68 struct ptlrpc_connection {
69 struct list_head c_link;
70 struct lustre_peer c_peer;
72 __u32 c_generation; /* changes upon new connection */
73 __u32 c_epoch; /* changes when peer changes */
74 __u32 c_bootcount; /* peer's boot count */
87 struct ptlrpc_client {
88 struct obd_device *cli_obd;
89 struct list_head cli_sending_head;
90 struct list_head cli_sent_head;
91 __u32 cli_request_portal;
92 __u32 cli_reply_portal;
94 struct semaphore cli_rpc_sem;
95 struct list_head cli_ha_item;
96 struct lustre_ha_mgr *cli_ha_mgr;
99 /* These do double-duty in rq_type and rq_flags */
100 #define PTL_RPC_INTR 1
101 #define PTL_RPC_REQUEST 2
102 #define PTL_RPC_REPLY 3
103 #define PTL_RPC_BULK 4
104 #define PTL_RPC_SENT 5
105 #define PTL_BULK_SENT 6
106 #define PTL_BULK_RCVD 7
107 #define PTL_RPC_ERR 8
109 struct ptlrpc_request {
110 int rq_type; /* one of PTL_RPC_REQUEST, PTL_RPC_REPLY, PTL_RPC_BULK */
112 struct list_head rq_list;
113 struct obd_device *rq_obd;
119 struct lustre_msg *rq_reqmsg;
122 struct lustre_msg *rq_repmsg;
128 void * rq_reply_handle;
129 wait_queue_head_t rq_wait_for_rep;
132 ptl_md_t rq_reply_md;
133 ptl_handle_md_t rq_reply_md_h;
134 ptl_handle_me_t rq_reply_me_h;
136 /* outgoing req/rep */
138 ptl_handle_md_t rq_req_md_h;
140 struct ptlrpc_connection *rq_connection;
141 struct ptlrpc_client *rq_client;
144 struct ptlrpc_bulk_desc {
146 struct ptlrpc_connection *b_connection;
150 int (*b_cb)(struct ptlrpc_bulk_desc *, void *);
152 struct obd_conn b_conn;
155 wait_queue_head_t b_waitq;
158 ptl_handle_md_t b_md_h;
159 ptl_handle_me_t b_me_h;
162 struct ptlrpc_service {
163 /* incoming request buffers */
164 /* FIXME: perhaps a list of EQs, if multiple NIs are used? */
165 char *srv_buf[RPC_RING_LENGTH];
166 __u32 srv_ref_count[RPC_RING_LENGTH];
167 ptl_handle_me_t srv_me_h[RPC_RING_LENGTH];
169 __u32 srv_ring_length;
170 __u32 srv_req_portal;
171 __u32 srv_rep_portal;
176 ptl_handle_eq_t srv_eq_h;
179 struct lustre_peer srv_self;
180 ptl_process_id_t srv_id;
182 struct task_struct *srv_thread;
183 wait_queue_head_t srv_waitq;
184 wait_queue_head_t srv_ctl_waitq;
187 struct list_head srv_reqs;
189 int (*srv_handler)(struct obd_device *obddev,
190 struct ptlrpc_service *svc,
191 struct ptlrpc_request *req);
194 typedef int (*svc_handler_t)(struct obd_device *obddev,
195 struct ptlrpc_service *svc,
196 struct ptlrpc_request *req);
198 /* rpc/connection.c */
199 struct ptlrpc_connection *ptlrpc_get_connection(struct lustre_peer *peer);
200 int ptlrpc_put_connection(struct ptlrpc_connection *c);
201 struct ptlrpc_connection *ptlrpc_connection_addref(struct ptlrpc_connection *);
202 void ptlrpc_init_connection(void);
203 void ptlrpc_cleanup_connection(void);
206 int ptlrpc_check_bulk_sent(struct ptlrpc_bulk_desc *);
207 int ptlrpc_send_bulk(struct ptlrpc_bulk_desc *, int portal);
208 int ptl_send_buf(struct ptlrpc_request *, struct ptlrpc_connection *,
210 int ptlrpc_register_bulk(struct ptlrpc_bulk_desc *);
211 int ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *bulk);
212 int ptlrpc_reply(struct ptlrpc_service *svc, struct ptlrpc_request *req);
213 int ptlrpc_error(struct ptlrpc_service *svc, struct ptlrpc_request *req);
214 int ptl_send_rpc(struct ptlrpc_request *request);
215 void ptlrpc_link_svc_me(struct ptlrpc_service *service, int i);
218 void ptlrpc_init_client(struct lustre_ha_mgr *, int req_portal, int rep_portal,
219 struct ptlrpc_client *);
220 struct ptlrpc_connection *ptlrpc_connect_client(char *uuid);
221 int ptlrpc_queue_wait(struct ptlrpc_request *req);
222 struct ptlrpc_request *ptlrpc_prep_req(struct ptlrpc_client *cl,
223 struct ptlrpc_connection *u, int opcode,
224 int count, int *lengths, char **bufs);
225 void ptlrpc_free_req(struct ptlrpc_request *request);
226 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk(struct ptlrpc_connection *);
227 int ptlrpc_check_status(struct ptlrpc_request *req, int err);
230 struct ptlrpc_service *
231 ptlrpc_init_svc(__u32 bufsize, int req_portal, int rep_portal, char *uuid,
233 void ptlrpc_stop_thread(struct ptlrpc_service *svc);
234 int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc,
236 int rpc_unregister_service(struct ptlrpc_service *service);
238 struct ptlrpc_svc_data {
240 struct ptlrpc_service *svc;
241 struct obd_device *dev;
244 /* rpc/pack_generic.c */
245 int lustre_pack_msg(int count, int *lens, char **bufs, int *len,
246 struct lustre_msg **msg);
247 int lustre_msg_size(int count, int *lengths);
248 int lustre_unpack_msg(struct lustre_msg *m, int len);
249 void *lustre_msg_buf(struct lustre_msg *m, int n);