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 */
84 struct ptlrpc_client {
85 struct obd_device *cli_obd;
86 struct list_head cli_sending_head;
87 struct list_head cli_sent_head;
88 __u32 cli_request_portal;
89 __u32 cli_reply_portal;
91 struct semaphore cli_rpc_sem;
92 struct list_head cli_ha_item;
93 struct lustre_ha_mgr *cli_ha_mgr;
96 /* These do double-duty in rq_type and rq_flags */
97 #define PTL_RPC_INTR 1
98 #define PTL_RPC_REQUEST 2
99 #define PTL_RPC_REPLY 3
100 #define PTL_RPC_BULK 4
101 #define PTL_RPC_SENT 5
102 #define PTL_BULK_SENT 6
103 #define PTL_BULK_RCVD 7
104 #define PTL_RPC_ERR 8
106 struct ptlrpc_request {
107 int rq_type; /* one of PTL_RPC_REQUEST, PTL_RPC_REPLY, PTL_RPC_BULK */
109 struct list_head rq_list;
110 struct obd_device *rq_obd;
116 struct lustre_msg *rq_reqmsg;
119 struct lustre_msg *rq_repmsg;
125 void * rq_reply_handle;
126 wait_queue_head_t rq_wait_for_rep;
129 ptl_md_t rq_reply_md;
130 ptl_handle_md_t rq_reply_md_h;
131 ptl_handle_me_t rq_reply_me_h;
133 /* outgoing req/rep */
135 ptl_handle_md_t rq_req_md_h;
137 struct ptlrpc_connection *rq_connection;
138 struct ptlrpc_client *rq_client;
141 struct ptlrpc_bulk_desc {
143 struct ptlrpc_connection *b_connection;
147 int (*b_cb)(struct ptlrpc_bulk_desc *, void *);
149 struct obd_conn b_conn;
152 wait_queue_head_t b_waitq;
155 ptl_handle_md_t b_md_h;
156 ptl_handle_me_t b_me_h;
159 struct ptlrpc_service {
160 /* incoming request buffers */
161 /* FIXME: perhaps a list of EQs, if multiple NIs are used? */
162 char *srv_buf[RPC_RING_LENGTH];
163 __u32 srv_ref_count[RPC_RING_LENGTH];
164 ptl_handle_me_t srv_me_h[RPC_RING_LENGTH];
166 __u32 srv_ring_length;
167 __u32 srv_req_portal;
168 __u32 srv_rep_portal;
173 ptl_handle_eq_t srv_eq_h;
176 struct lustre_peer srv_self;
177 ptl_process_id_t srv_id;
179 struct task_struct *srv_thread;
180 wait_queue_head_t srv_waitq;
181 wait_queue_head_t srv_ctl_waitq;
184 struct list_head srv_reqs;
186 int (*srv_handler)(struct obd_device *obddev,
187 struct ptlrpc_service *svc,
188 struct ptlrpc_request *req);
191 typedef int (*svc_handler_t)(struct obd_device *obddev,
192 struct ptlrpc_service *svc,
193 struct ptlrpc_request *req);
195 /* rpc/connection.c */
196 struct ptlrpc_connection *ptlrpc_get_connection(struct lustre_peer *peer);
197 int ptlrpc_put_connection(struct ptlrpc_connection *c);
198 struct ptlrpc_connection *ptlrpc_connection_addref(struct ptlrpc_connection *);
199 void ptlrpc_init_connection(void);
200 void ptlrpc_cleanup_connection(void);
203 int ptlrpc_check_bulk_sent(struct ptlrpc_bulk_desc *);
204 int ptlrpc_send_bulk(struct ptlrpc_bulk_desc *, int portal);
205 int ptl_send_buf(struct ptlrpc_request *, struct ptlrpc_connection *,
207 int ptlrpc_register_bulk(struct ptlrpc_bulk_desc *);
208 int ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *bulk);
209 int ptlrpc_reply(struct ptlrpc_service *svc, struct ptlrpc_request *req);
210 int ptlrpc_error(struct ptlrpc_service *svc, struct ptlrpc_request *req);
211 int ptl_send_rpc(struct ptlrpc_request *request);
212 void ptlrpc_link_svc_me(struct ptlrpc_service *service, int i);
215 void ptlrpc_init_client(struct lustre_ha_mgr *, int req_portal, int rep_portal,
216 struct ptlrpc_client *);
217 struct ptlrpc_connection *ptlrpc_connect_client(char *uuid);
218 int ptlrpc_queue_wait(struct ptlrpc_request *req);
219 struct ptlrpc_request *ptlrpc_prep_req(struct ptlrpc_client *cl,
220 struct ptlrpc_connection *u, int opcode,
221 int count, int *lengths, char **bufs);
222 void ptlrpc_free_req(struct ptlrpc_request *request);
223 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk(struct ptlrpc_connection *);
224 int ptlrpc_check_status(struct ptlrpc_request *req, int err);
227 struct ptlrpc_service *
228 ptlrpc_init_svc(__u32 bufsize, int req_portal, int rep_portal, char *uuid,
230 void ptlrpc_stop_thread(struct ptlrpc_service *svc);
231 int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc,
233 int rpc_unregister_service(struct ptlrpc_service *service);
235 struct ptlrpc_svc_data {
237 struct ptlrpc_service *svc;
238 struct obd_device *dev;
241 /* rpc/pack_generic.c */
242 int lustre_pack_msg(int count, int *lens, char **bufs, int *len,
243 struct lustre_msg **msg);
244 int lustre_msg_size(int count, int *lengths);
245 int lustre_unpack_msg(struct lustre_msg *m, int len);
246 void *lustre_msg_buf(struct lustre_msg *m, int n);