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
56 #define LDLM_CLI_REQUEST_PORTAL 15
57 #define LDLM_CLI_REPLY_PORTAL 16
59 /* default rpc ring length */
60 #define RPC_RING_LENGTH 2
62 #define SVC_STOPPING 1
70 struct ptlrpc_client {
71 struct obd_device *cli_obd;
72 struct list_head cli_sending_head;
73 struct list_head cli_sent_head;
74 __u32 cli_request_portal;
75 __u32 cli_reply_portal;
79 __u32 cli_generation; /* changes upon new connection */
80 __u32 cli_epoch; /* changes when peer changes */
81 __u32 cli_bootcount; /* peer's boot count */
82 struct semaphore cli_rpc_sem;
83 struct list_head cli_ha_item;
84 struct lustre_ha_mgr *cli_ha_mgr;
87 /* These do double-duty in rq_type and rq_flags */
88 #define PTL_RPC_INTR 1
89 #define PTL_RPC_REQUEST 2
90 #define PTL_RPC_REPLY 3
91 #define PTL_RPC_BULK 4
92 #define PTL_RPC_SENT 5
93 #define PTL_BULK_SENT 6
94 #define PTL_BULK_RCVD 7
97 struct ptlrpc_request {
98 int rq_type; /* one of PTL_RPC_REQUEST, PTL_RPC_REPLY, PTL_RPC_BULK */
100 struct list_head rq_list;
101 struct obd_device *rq_obd;
109 struct lustre_msg *rq_reqmsg;
113 struct lustre_msg *rq_repmsg;
119 void * rq_reply_handle;
120 wait_queue_head_t rq_wait_for_rep;
123 ptl_md_t rq_reply_md;
124 ptl_handle_md_t rq_reply_md_h;
125 ptl_handle_me_t rq_reply_me_h;
127 /* outgoing req/rep */
129 ptl_handle_md_t rq_req_md_h;
131 __u32 rq_reply_portal;
134 struct lustre_peer rq_peer;
135 struct ptlrpc_client *rq_client;
138 struct ptlrpc_bulk_desc {
140 struct lustre_peer b_peer;
144 int (*b_cb)(struct ptlrpc_bulk_desc *, void *);
146 struct obd_conn b_conn;
149 wait_queue_head_t b_waitq;
152 ptl_handle_md_t b_md_h;
153 ptl_handle_me_t b_me_h;
156 struct ptlrpc_service {
157 /* incoming request buffers */
158 /* FIXME: perhaps a list of EQs, if multiple NIs are used? */
159 char *srv_buf[RPC_RING_LENGTH];
160 __u32 srv_ref_count[RPC_RING_LENGTH];
161 ptl_handle_me_t srv_me_h[RPC_RING_LENGTH];
163 __u32 srv_ring_length;
164 __u32 srv_req_portal;
165 __u32 srv_rep_portal;
170 ptl_handle_eq_t srv_eq_h;
173 struct lustre_peer srv_self;
174 ptl_process_id_t srv_id;
176 struct task_struct *srv_thread;
177 wait_queue_head_t srv_waitq;
178 wait_queue_head_t srv_ctl_waitq;
181 struct list_head srv_reqs;
183 int (*srv_handler)(struct obd_device *obddev,
184 struct ptlrpc_service *svc,
185 struct ptlrpc_request *req);
188 typedef int (*svc_handler_t)(struct obd_device *obddev,
189 struct ptlrpc_service *svc,
190 struct ptlrpc_request *req);
195 int ptlrpc_check_bulk_sent(struct ptlrpc_bulk_desc *);
196 int ptlrpc_send_bulk(struct ptlrpc_bulk_desc *, int portal);
197 int ptl_send_buf(struct ptlrpc_request *, struct lustre_peer *, int portal);
198 int ptlrpc_register_bulk(struct ptlrpc_bulk_desc *);
199 int ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *bulk);
200 int ptlrpc_reply(struct ptlrpc_service *svc, struct ptlrpc_request *req);
201 int ptlrpc_error(struct ptlrpc_service *svc, struct ptlrpc_request *req);
202 int ptl_send_rpc(struct ptlrpc_request *request, struct ptlrpc_client *cl);
203 void ptlrpc_link_svc_me(struct ptlrpc_service *service, int i);
206 void ptlrpc_init_client(struct lustre_ha_mgr *mgr, int req_portal, int rep_portal,
207 struct ptlrpc_client *cl);
208 int ptlrpc_connect_client(char *uuid, struct ptlrpc_client *cl,
209 struct lustre_peer *peer);
210 int ptlrpc_queue_wait(struct ptlrpc_client *cl, struct ptlrpc_request *req);
211 int ptlrpc_queue_req(struct ptlrpc_client *peer, struct ptlrpc_request *req);
212 struct ptlrpc_request *ptlrpc_prep_req(struct ptlrpc_client *cl,
213 struct lustre_peer *peer, int opcode,
214 int count, int *lengths, char **bufs);
215 void ptlrpc_free_req(struct ptlrpc_request *request);
216 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk(struct lustre_peer *);
217 int ptlrpc_check_status(struct ptlrpc_request *req, int err);
220 struct ptlrpc_service *
221 ptlrpc_init_svc(__u32 bufsize, int req_portal, int rep_portal, char *uuid,
223 void ptlrpc_stop_thread(struct ptlrpc_service *svc);
224 int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc,
226 int rpc_unregister_service(struct ptlrpc_service *service);
228 struct ptlrpc_svc_data {
230 struct ptlrpc_service *svc;
231 struct obd_device *dev;
234 /* rpc/pack_generic.c */
235 int lustre_pack_msg(int count, int *lens, char **bufs, int *len, char **buf);
236 int lustre_msg_size(int count, int *lengths);
237 int lustre_unpack_msg(char *buf, int len);
238 void *lustre_msg_buf(struct lustre_msg *m, int n);