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
59 #define SVC_STOPPING 1
64 #define SVC_HA_EVENT 32
67 struct ptlrpc_connection {
68 struct list_head c_link;
69 struct lustre_peer c_peer;
71 __u32 c_generation; /* changes upon new connection */
72 __u32 c_epoch; /* changes when peer changes */
73 __u32 c_bootcount; /* peer's boot count */
85 struct ptlrpc_client {
86 struct obd_device *cli_obd;
87 __u32 cli_request_portal;
88 __u32 cli_reply_portal;
90 struct semaphore cli_rpc_sem; /* limits outstanding requests */
92 spinlock_t cli_lock; /* protects lists */
93 struct list_head cli_sending_head;
94 struct list_head cli_sent_head;
95 struct list_head cli_ha_item;
97 struct connmgr_obd *cli_ha_mgr;
100 /* These do double-duty in rq_type and rq_flags */
101 #define PTL_RPC_INTR 1
102 #define PTL_RPC_REQUEST 2
103 #define PTL_RPC_REPLY 3
104 #define PTL_RPC_BULK 4
105 #define PTL_RPC_SENT 5
106 #define PTL_BULK_SENT 6
107 #define PTL_BULK_RCVD 7
108 #define PTL_RPC_ERR 8
110 struct ptlrpc_request {
111 int rq_type; /* one of PTL_RPC_REQUEST, PTL_RPC_REPLY, PTL_RPC_BULK */
113 struct list_head rq_list;
114 struct obd_device *rq_obd;
120 struct lustre_msg *rq_reqmsg;
123 struct lustre_msg *rq_repmsg;
129 // void * rq_reply_handle;
130 wait_queue_head_t rq_wait_for_rep;
133 ptl_md_t rq_reply_md;
134 ptl_handle_md_t rq_reply_md_h;
135 ptl_handle_me_t rq_reply_me_h;
137 /* outgoing req/rep */
139 ptl_handle_md_t rq_req_md_h;
141 struct ptlrpc_connection *rq_connection;
142 struct ptlrpc_client *rq_client;
145 struct ptlrpc_bulk_desc {
147 struct ptlrpc_connection *b_connection;
151 int (*b_cb)(struct ptlrpc_bulk_desc *, void *);
153 struct obd_conn b_conn;
156 wait_queue_head_t b_waitq;
159 ptl_handle_md_t b_md_h;
160 ptl_handle_me_t b_me_h;
163 struct ptlrpc_service {
167 /* incoming request buffers */
168 /* FIXME: perhaps a list of EQs, if multiple NIs are used? */
169 char *srv_buf[RPC_RING_LENGTH];
170 __u32 srv_ref_count[RPC_RING_LENGTH];
171 ptl_handle_me_t srv_me_h[RPC_RING_LENGTH];
173 __u32 srv_ring_length;
174 __u32 srv_req_portal;
175 __u32 srv_rep_portal;
180 ptl_handle_eq_t srv_eq_h;
183 struct lustre_peer srv_self;
184 ptl_process_id_t srv_id;
186 struct task_struct *srv_thread;
187 wait_queue_head_t srv_waitq;
188 wait_queue_head_t srv_ctl_waitq;
191 struct list_head srv_reqs;
193 int (*srv_handler)(struct obd_device *obddev,
194 struct ptlrpc_service *svc,
195 struct ptlrpc_request *req);
198 typedef int (*svc_handler_t)(struct obd_device *obddev,
199 struct ptlrpc_service *svc,
200 struct ptlrpc_request *req);
202 /* rpc/connection.c */
203 struct ptlrpc_connection *ptlrpc_get_connection(struct lustre_peer *peer);
204 int ptlrpc_put_connection(struct ptlrpc_connection *c);
205 struct ptlrpc_connection *ptlrpc_connection_addref(struct ptlrpc_connection *);
206 void ptlrpc_init_connection(void);
207 void ptlrpc_cleanup_connection(void);
210 int ptlrpc_check_bulk_sent(struct ptlrpc_bulk_desc *);
211 int ptlrpc_send_bulk(struct ptlrpc_bulk_desc *, int portal);
212 int ptlrpc_register_bulk(struct ptlrpc_bulk_desc *);
213 int ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *bulk);
214 int ptlrpc_reply(struct ptlrpc_service *svc, struct ptlrpc_request *req);
215 int ptlrpc_error(struct ptlrpc_service *svc, struct ptlrpc_request *req);
216 int ptl_send_rpc(struct ptlrpc_request *request);
217 void ptlrpc_link_svc_me(struct ptlrpc_service *service, int i);
220 void ptlrpc_init_client(struct connmgr_obd *, int req_portal, int rep_portal,
221 struct ptlrpc_client *);
222 struct ptlrpc_connection *ptlrpc_uuid_to_connection(char *uuid);
223 int ptlrpc_queue_wait(struct ptlrpc_request *req);
224 struct ptlrpc_request *ptlrpc_prep_req(struct ptlrpc_client *cl,
225 struct ptlrpc_connection *u, int opcode,
226 int count, int *lengths, char **bufs);
227 void ptlrpc_free_bulk(struct ptlrpc_bulk_desc *bulk);
228 void ptlrpc_free_req(struct ptlrpc_request *request);
229 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk(struct ptlrpc_connection *);
230 int ptlrpc_check_status(struct ptlrpc_request *req, int err);
233 struct ptlrpc_service *
234 ptlrpc_init_svc(__u32 bufsize, int req_portal, int rep_portal, char *uuid,
236 void ptlrpc_stop_thread(struct ptlrpc_service *svc);
237 int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc,
239 int rpc_unregister_service(struct ptlrpc_service *service);
241 struct ptlrpc_svc_data {
243 struct ptlrpc_service *svc;
244 struct obd_device *dev;
247 /* rpc/pack_generic.c */
248 int lustre_pack_msg(int count, int *lens, char **bufs, int *len,
249 struct lustre_msg **msg);
250 int lustre_msg_size(int count, int *lengths);
251 int lustre_unpack_msg(struct lustre_msg *m, int len);
252 void *lustre_msg_buf(struct lustre_msg *m, int n);