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 OSC_REQUEST_PORTAL 1
38 #define OSC_REPLY_PORTAL 2
39 #define OSC_BULK_PORTAL 3
41 #define OST_REQUEST_PORTAL 4
42 #define OST_REPLY_PORTAL 5
43 #define OST_BULK_PORTAL 6
45 #define MDC_REQUEST_PORTAL 7
46 #define MDC_REPLY_PORTAL 8
47 #define MDC_BULK_PORTAL 9
49 #define MDS_REQUEST_PORTAL 10
50 #define MDS_REPLY_PORTAL 11
51 #define MDS_BULK_PORTAL 12
53 /* default rpc ring length */
54 #define RPC_RING_LENGTH 2
56 /* generic wrappable next */
57 #define NEXT_INDEX(index, max) (((index+1) >= max) ? 0 : (index+1))
59 #define SVC_STOPPING 1
67 typedef int (*rep_unpack_t)(char *, int, struct ptlrep_hdr **, union ptl_rep *);
68 typedef int (*req_pack_t)(char *, int, char *, int, struct ptlreq_hdr **,
69 union ptl_req*, int *, char **);
71 typedef int (*req_unpack_t)(char *buf, int len, struct ptlreq_hdr **,
73 typedef int (*rep_pack_t)(char *buf1, int len1, char *buf2, int len2,
74 struct ptlrep_hdr **, union ptl_rep*,
75 int *replen, char **repbuf);
77 struct ptlrpc_client {
78 struct lustre_peer cli_server;
79 struct obd_device *cli_obd;
80 __u32 cli_request_portal;
81 __u32 cli_reply_portal;
82 rep_unpack_t cli_rep_unpack;
83 req_pack_t cli_req_pack;
89 /* These do double-duty in rq_type and rq_flags */
90 #define PTL_RPC_INTR 1
91 #define PTL_RPC_REQUEST 2
92 #define PTL_RPC_REPLY 3
93 #define PTL_RPC_BULK 4
94 #define PTL_RPC_SENT 5
95 #define PTL_BULK_SENT 6
96 #define PTL_BULK_RCVD 6
98 struct ptlrpc_request {
99 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 ptlreq_hdr *rq_reqhdr;
110 union ptl_req rq_req;
114 struct ptlrep_hdr *rq_rephdr;
115 union ptl_rep rq_rep;
120 void * rq_reply_handle;
121 wait_queue_head_t rq_wait_for_rep;
124 ptl_md_t rq_reply_md;
125 ptl_handle_md_t rq_reply_md_h;
126 ptl_handle_me_t rq_reply_me_h;
128 /* outgoing req/rep */
130 ptl_handle_md_t rq_req_md_h;
132 __u32 rq_reply_portal;
135 struct lustre_peer rq_peer;
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];
164 __u32 srv_ring_length;
165 __u32 srv_req_portal;
166 __u32 srv_rep_portal;
167 __u32 srv_ref_count[RPC_RING_LENGTH];
168 ptl_handle_me_t srv_me_h[RPC_RING_LENGTH];
169 ptl_process_id_t srv_id;
170 ptl_md_t srv_md[RPC_RING_LENGTH];
171 ptl_handle_md_t srv_md_h[RPC_RING_LENGTH];
175 ptl_handle_eq_t srv_eq_h;
178 struct lustre_peer srv_self;
179 struct task_struct *srv_thread;
180 wait_queue_head_t srv_waitq;
181 wait_queue_head_t srv_ctl_waitq;
185 struct list_head srv_reqs;
187 req_unpack_t srv_req_unpack;
188 rep_pack_t srv_rep_pack;
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);
201 int ptlrpc_check_bulk_sent(struct ptlrpc_bulk_desc *);
202 int ptlrpc_send_bulk(struct ptlrpc_bulk_desc *, int portal);
203 int ptl_send_buf(struct ptlrpc_request *, struct lustre_peer *, int portal);
204 int ptlrpc_register_bulk(struct ptlrpc_bulk_desc *);
205 int ptlrpc_reply(struct obd_device *obddev, struct ptlrpc_service *svc,
206 struct ptlrpc_request *req);
207 int ptlrpc_error(struct obd_device *obddev, struct ptlrpc_service *svc,
208 struct ptlrpc_request *req);
209 int ptl_send_rpc(struct ptlrpc_request *request, struct lustre_peer *peer);
210 int ptl_received_rpc(struct ptlrpc_service *service);
213 int ptlrpc_connect_client(int dev, char *uuid, int req_portal, int rep_portal,
214 req_pack_t req_pack, rep_unpack_t rep_unpack,
215 struct ptlrpc_client *cl);
216 int ptlrpc_queue_wait(struct ptlrpc_client *cl, struct ptlrpc_request *req);
217 int ptlrpc_queue_req(struct ptlrpc_client *peer, struct ptlrpc_request *req);
218 struct ptlrpc_request *ptlrpc_prep_req(struct ptlrpc_client *cl,
219 int opcode, int namelen, char *name,
220 int tgtlen, char *tgt);
221 void ptlrpc_free_req(struct ptlrpc_request *request);
222 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk(struct lustre_peer *);
225 struct ptlrpc_service *
226 ptlrpc_init_svc(__u32 bufsize, int req_portal, int rep_portal, char *uuid,
227 req_unpack_t unpack, rep_pack_t pack, svc_handler_t);
228 void ptlrpc_stop_thread(struct ptlrpc_service *svc);
229 int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc,
231 int rpc_register_service(struct ptlrpc_service *service, char *uuid);
232 int rpc_unregister_service(struct ptlrpc_service *service);
234 struct ptlrpc_svc_data {
236 struct ptlrpc_service *svc;
237 struct obd_device *dev;