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.
23 #define DEBUG_SUBSYSTEM S_RPC
25 #include <linux/obd_support.h>
26 #include <linux/lustre_net.h>
27 #include <linux/lustre_lib.h>
28 #include <linux/obd.h>
30 extern ptl_handle_eq_t request_out_eq, reply_in_eq, reply_out_eq,
31 bulk_source_eq, bulk_sink_eq;
33 static int ptl_send_buf(struct ptlrpc_request *request,
34 struct ptlrpc_connection *conn, int portal)
37 ptl_process_id_t remote_id;
42 request->rq_req_md.user_ptr = request;
44 switch (request->rq_type) {
45 case PTL_RPC_MSG_REQUEST:
46 request->rq_reqmsg->type = HTON__u32(request->rq_type);
47 request->rq_req_md.start = request->rq_reqmsg;
48 request->rq_req_md.length = request->rq_reqlen;
49 request->rq_req_md.eventq = request_out_eq;
52 case PTL_RPC_MSG_REPLY:
53 request->rq_repmsg->type = HTON__u32(request->rq_type);
54 request->rq_req_md.start = request->rq_repmsg;
55 request->rq_req_md.length = request->rq_replen;
56 request->rq_req_md.eventq = reply_out_eq;
60 return -1; /* notreached */
62 request->rq_req_md.threshold = 1;
63 request->rq_req_md.options = PTL_MD_OP_PUT;
64 request->rq_req_md.user_ptr = request;
66 rc = PtlMDBind(conn->c_peer.peer_ni, request->rq_req_md, &md_h);
68 CERROR("PtlMDBind failed: %d\n", rc);
73 remote_id.nid = conn->c_peer.peer_nid;
76 CDEBUG(D_NET, "Sending %d bytes to portal %d, xid "LPD64"\n",
77 request->rq_req_md.length, portal, request->rq_xid);
81 rc = PtlPut(md_h, PTL_NOACK_REQ, remote_id, portal, 0, request->rq_xid,
84 CERROR("PtlPut("LPU64", %d, "LPD64") failed: %d\n",
85 remote_id.nid, portal, request->rq_xid, rc);
92 static inline struct iovec *
93 ptlrpc_get_bulk_iov (struct ptlrpc_bulk_desc *desc)
97 if (desc->bd_page_count <= sizeof (desc->bd_iov)/sizeof (struct iovec))
98 return (desc->bd_iov);
100 OBD_ALLOC (iov, desc->bd_page_count * sizeof (struct iovec));
108 ptlrpc_put_bulk_iov (struct ptlrpc_bulk_desc *desc, struct iovec *iov)
110 if (desc->bd_page_count <= sizeof (desc->bd_iov)/sizeof (struct iovec))
113 OBD_FREE (iov, desc->bd_page_count * sizeof (struct iovec));
116 int ptlrpc_send_bulk(struct ptlrpc_bulk_desc *desc)
119 struct list_head *tmp, *next;
120 ptl_process_id_t remote_id;
125 iov = ptlrpc_get_bulk_iov (desc);
129 desc->bd_md.start = iov;
130 desc->bd_md.niov = 0;
131 desc->bd_md.length = 0;
132 desc->bd_md.eventq = bulk_source_eq;
133 desc->bd_md.threshold = 2; /* SENT and ACK */
134 desc->bd_md.options = PTL_MD_OP_PUT | PTL_MD_IOV;
135 desc->bd_md.user_ptr = desc;
137 atomic_set(&desc->bd_source_callback_count, 2);
139 list_for_each_safe(tmp, next, &desc->bd_page_list) {
140 struct ptlrpc_bulk_page *bulk;
141 bulk = list_entry(tmp, struct ptlrpc_bulk_page, bp_link);
143 LASSERT(desc->bd_md.niov < desc->bd_page_count);
145 if (desc->bd_md.niov == 0)
147 LASSERT(xid == bulk->bp_xid); /* should all be the same */
149 iov[desc->bd_md.niov].iov_base = bulk->bp_buf;
150 iov[desc->bd_md.niov].iov_len = bulk->bp_buflen;
152 desc->bd_md.length += bulk->bp_buflen;
155 LASSERT(desc->bd_md.niov == desc->bd_page_count);
156 LASSERT(desc->bd_md.niov != 0);
158 rc = PtlMDBind(desc->bd_connection->c_peer.peer_ni, desc->bd_md,
161 ptlrpc_put_bulk_iov (desc, iov); /*move down to reduce latency to send*/
164 CERROR("PtlMDBind failed: %d\n", rc);
169 remote_id.nid = desc->bd_connection->c_peer.peer_nid;
172 CDEBUG(D_NET, "Sending %u pages %u bytes to portal %d nid "LPX64" pid "
173 "%d xid %d\n", desc->bd_md.niov, desc->bd_md.length,
174 desc->bd_portal, remote_id.nid, remote_id.pid, xid);
176 rc = PtlPut(desc->bd_md_h, PTL_ACK_REQ, remote_id,
177 desc->bd_portal, 0, xid, 0, 0);
179 CERROR("PtlPut("LPU64", %d, %d) failed: %d\n",
180 remote_id.nid, desc->bd_portal, xid, rc);
181 PtlMDUnlink(desc->bd_md_h);
189 int ptlrpc_register_bulk(struct ptlrpc_bulk_desc *desc)
191 struct list_head *tmp, *next;
195 ptl_process_id_t source_id;
198 if (desc->bd_page_count > PTL_MD_MAX_IOV) {
199 CERROR("iov longer than %d pages not supported (count=%d)\n",
200 PTL_MD_MAX_IOV, desc->bd_page_count);
204 iov = ptlrpc_get_bulk_iov (desc);
208 desc->bd_md.start = iov;
209 desc->bd_md.niov = 0;
210 desc->bd_md.length = 0;
211 desc->bd_md.threshold = 1;
212 desc->bd_md.options = PTL_MD_OP_PUT | PTL_MD_IOV;
213 desc->bd_md.user_ptr = desc;
214 desc->bd_md.eventq = bulk_sink_eq;
216 list_for_each_safe(tmp, next, &desc->bd_page_list) {
217 struct ptlrpc_bulk_page *bulk;
218 bulk = list_entry(tmp, struct ptlrpc_bulk_page, bp_link);
220 LASSERT(desc->bd_md.niov < desc->bd_page_count);
222 if (desc->bd_md.niov == 0)
224 LASSERT(xid == bulk->bp_xid); /* should all be the same */
226 iov[desc->bd_md.niov].iov_base = bulk->bp_buf;
227 iov[desc->bd_md.niov].iov_len = bulk->bp_buflen;
229 desc->bd_md.length += bulk->bp_buflen;
232 LASSERT(desc->bd_md.niov == desc->bd_page_count);
233 LASSERT(desc->bd_md.niov != 0);
235 source_id.nid = desc->bd_connection->c_peer.peer_nid;
236 source_id.pid = PTL_PID_ANY;
238 rc = PtlMEAttach(desc->bd_connection->c_peer.peer_ni,
239 desc->bd_portal, source_id, xid, 0,
240 PTL_UNLINK, PTL_INS_AFTER, &desc->bd_me_h);
243 CERROR("PtlMEAttach failed: %d\n", rc);
248 rc = PtlMDAttach(desc->bd_me_h, desc->bd_md, PTL_UNLINK,
251 CERROR("PtlMDAttach failed: %d\n", rc);
256 ptlrpc_put_bulk_iov (desc, iov);
258 CDEBUG(D_NET, "Setup bulk sink buffers: %u pages %u bytes, xid %u, "
259 "portal %u\n", desc->bd_md.niov, desc->bd_md.length,
260 xid, desc->bd_portal);
265 ptlrpc_put_bulk_iov (desc, iov);
266 ptlrpc_abort_bulk(desc);
271 int ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *desc)
273 /* This should be safe: these handles are initialized to be
274 * invalid in ptlrpc_prep_bulk() */
275 PtlMDUnlink(desc->bd_md_h);
276 PtlMEUnlink(desc->bd_me_h);
281 void obd_brw_set_add(struct obd_brw_set *set, struct ptlrpc_bulk_desc *desc)
283 atomic_inc(&desc->bd_refcount);
284 atomic_inc(&set->brw_refcount);
285 desc->bd_brw_set = set;
286 list_add(&desc->bd_set_chain, &set->brw_desc_head);
289 struct obd_brw_set *obd_brw_set_new(void)
291 struct obd_brw_set *set;
293 OBD_ALLOC(set, sizeof(*set));
296 init_waitqueue_head(&set->brw_waitq);
297 INIT_LIST_HEAD(&set->brw_desc_head);
298 atomic_set(&set->brw_refcount, 0);
304 void obd_brw_set_free(struct obd_brw_set *set)
306 struct list_head *tmp, *next;
309 if (!list_empty(&set->brw_desc_head)) {
314 list_for_each_safe(tmp, next, &set->brw_desc_head) {
315 struct ptlrpc_bulk_desc *desc =
316 list_entry(tmp, struct ptlrpc_bulk_desc, bd_set_chain);
318 CERROR("Unfinished bulk descriptor: %p\n", desc);
320 ptlrpc_abort_bulk(desc);
322 OBD_FREE(set, sizeof(*set));
327 int ptlrpc_reply(struct ptlrpc_service *svc, struct ptlrpc_request *req)
329 if (req->rq_repmsg == NULL) {
330 CERROR("bad: someone called ptlrpc_reply when they meant "
335 /* FIXME: we need to increment the count of handled events */
336 if (req->rq_type != PTL_RPC_MSG_ERR)
337 req->rq_type = PTL_RPC_MSG_REPLY;
338 //req->rq_repmsg->conn = req->rq_connection->c_remote_conn;
339 //req->rq_repmsg->token = req->rq_connection->c_remote_token;
340 req->rq_repmsg->status = HTON__u32(req->rq_status);
341 return ptl_send_buf(req, req->rq_connection, svc->srv_rep_portal);
344 int ptlrpc_error(struct ptlrpc_service *svc, struct ptlrpc_request *req)
349 if (req->rq_repmsg) {
350 CERROR("req already has repmsg\n");
354 rc = lustre_pack_msg(0, NULL, NULL, &req->rq_replen, &req->rq_repmsg);
358 req->rq_type = PTL_RPC_MSG_ERR;
360 rc = ptlrpc_reply(svc, req);
364 int ptl_send_rpc(struct ptlrpc_request *request)
368 ptl_process_id_t source_id;
372 if (request->rq_type != PTL_RPC_MSG_REQUEST) {
373 CERROR("wrong packet type sent %d\n",
374 NTOH__u32(request->rq_reqmsg->type));
379 source_id.nid = request->rq_connection->c_peer.peer_nid;
380 source_id.pid = PTL_PID_ANY;
382 /* add a ref, which will be balanced in request_out_callback */
383 atomic_inc(&request->rq_refcount);
384 if (request->rq_replen != 0) {
385 /* request->rq_repmsg is set only when the reply comes in, in
386 * client_packet_callback() */
387 if (request->rq_reply_md.start) {
388 PtlMEUnlink(request->rq_reply_me_h);
389 OBD_FREE(request->rq_reply_md.start,
391 /* If we're resending, rq_repmsg needs to be NULLed out
392 * again so that ptlrpc_check_reply doesn't trip early.
394 request->rq_repmsg = NULL;
396 OBD_ALLOC(repbuf, request->rq_replen);
402 rc = PtlMEAttach(request->rq_connection->c_peer.peer_ni,
403 request->rq_reply_portal,/* XXX FIXME bug 625069 */
404 source_id, request->rq_xid, 0, PTL_UNLINK,
405 PTL_INS_AFTER, &request->rq_reply_me_h);
407 CERROR("PtlMEAttach failed: %d\n", rc);
412 request->rq_reply_md.start = repbuf;
413 request->rq_reply_md.length = request->rq_replen;
414 request->rq_reply_md.threshold = 1;
415 request->rq_reply_md.options = PTL_MD_OP_PUT;
416 request->rq_reply_md.user_ptr = request;
417 request->rq_reply_md.eventq = reply_in_eq;
419 rc = PtlMDAttach(request->rq_reply_me_h, request->rq_reply_md,
422 CERROR("PtlMDAttach failed: %d\n", rc);
427 CDEBUG(D_NET, "Setup reply buffer: %u bytes, xid "LPU64
429 request->rq_replen, request->rq_xid,
430 request->rq_reply_portal);
433 /* Clear any flags that may be present from previous sends,
434 * except for REPLAY. */
435 request->rq_flags &= PTL_RPC_FL_REPLAY;
436 rc = ptl_send_buf(request, request->rq_connection,
437 request->rq_request_portal);
441 PtlMEUnlink(request->rq_reply_me_h);
443 OBD_FREE(repbuf, request->rq_replen);
444 // up(&request->rq_client->cli_rpc_sem);
449 void ptlrpc_link_svc_me(struct ptlrpc_request_buffer_desc *rqbd)
451 struct ptlrpc_service *service = rqbd->rqbd_service;
452 static ptl_process_id_t match_id = {PTL_NID_ANY, PTL_PID_ANY};
455 ptl_handle_md_t md_h;
457 LASSERT(atomic_read(&rqbd->rqbd_refcount) == 0);
459 /* Attach the leading ME on which we build the ring */
460 rc = PtlMEAttach(service->srv_self.peer_ni, service->srv_req_portal,
462 PTL_UNLINK, PTL_INS_AFTER, &rqbd->rqbd_me_h);
464 CERROR("PtlMEAttach failed: %d\n", rc);
468 dummy.start = rqbd->rqbd_buffer;
469 dummy.length = service->srv_buf_size;
470 dummy.max_size = service->srv_max_req_size;
471 dummy.threshold = PTL_MD_THRESH_INF;
472 dummy.options = PTL_MD_OP_PUT | PTL_MD_MAX_SIZE | PTL_MD_AUTO_UNLINK;
473 dummy.user_ptr = rqbd;
474 dummy.eventq = service->srv_eq_h;
476 atomic_inc(&service->srv_nrqbds_receiving);
477 atomic_set(&rqbd->rqbd_refcount, 1); /* 1 ref for portals */
479 rc = PtlMDAttach(rqbd->rqbd_me_h, dummy, PTL_UNLINK, &md_h);
481 CERROR("PtlMDAttach failed: %d\n", rc);
483 #warning proper cleanup required
484 PtlMEUnlink (rqbd->rqbd_me_h);
485 atomic_set(&rqbd->rqbd_refcount, 0);
486 atomic_dec(&service->srv_nrqbds_receiving);