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/lustre_net.h>
27 extern ptl_handle_eq_t request_out_eq, reply_in_eq, reply_out_eq,
28 bulk_source_eq, bulk_sink_eq;
29 static ptl_process_id_t local_id = {PTL_ID_ANY, PTL_ID_ANY};
31 static int ptlrpc_check_bulk_sent(struct ptlrpc_bulk_desc *bulk)
35 if (bulk->b_flags & PTL_BULK_FL_SENT)
38 if (sigismember(&(current->pending.signal), SIGKILL) ||
39 sigismember(&(current->pending.signal), SIGINT)) {
40 bulk->b_flags |= PTL_RPC_FL_INTR;
44 CDEBUG(D_NET, "no event yet\n");
48 static int ptl_send_buf(struct ptlrpc_request *request,
49 struct ptlrpc_connection *conn, int portal)
52 ptl_process_id_t remote_id;
56 request->rq_req_md.user_ptr = request;
58 switch (request->rq_type) {
59 case PTL_RPC_TYPE_REQUEST:
60 request->rq_req_md.start = request->rq_reqmsg;
61 request->rq_req_md.length = request->rq_reqlen;
62 request->rq_req_md.eventq = request_out_eq;
63 request->rq_req_md.threshold = 1;
66 case PTL_RPC_TYPE_REPLY:
67 request->rq_req_md.start = request->rq_repmsg;
68 request->rq_req_md.length = request->rq_replen;
69 request->rq_req_md.eventq = reply_out_eq;
70 request->rq_req_md.threshold = 1;
75 return -1; /* notreached */
77 request->rq_req_md.options = PTL_MD_OP_PUT;
78 request->rq_req_md.user_ptr = request;
80 rc = PtlMDBind(conn->c_peer.peer_ni, request->rq_req_md, &md_h);
81 //CERROR("MDBind (outgoing req/rep/bulk): %Lu\n", (__u64)md_h);
83 CERROR("PtlMDBind failed: %d\n", rc);
88 remote_id.nid = conn->c_peer.peer_nid;
91 CDEBUG(D_NET, "Sending %d bytes to portal %d, xid %Ld\n",
92 request->rq_req_md.length, portal, request->rq_xid);
94 rc = PtlPut(md_h, ack, remote_id, portal, 0, request->rq_reqmsg->xid,
97 CERROR("PtlPut(%Lu, %d, %Ld) failed: %d\n", remote_id.nid,
98 portal, request->rq_xid, rc);
105 int ptlrpc_send_bulk(struct ptlrpc_bulk_desc *desc)
108 struct list_head *tmp, *next;
109 ptl_process_id_t remote_id;
112 list_for_each_safe(tmp, next, &desc->b_page_list) {
113 /* only request an ACK for the last page */
114 int ack = (next == &desc->b_page_list);
115 struct ptlrpc_bulk_page *bulk;
116 bulk = list_entry(tmp, struct ptlrpc_bulk_page, b_link);
118 bulk->b_md.start = bulk->b_buf;
119 bulk->b_md.length = bulk->b_buflen;
120 bulk->b_md.eventq = bulk_source_eq;
121 bulk->b_md.threshold = 1 + ack; /* SENT and (if last) ACK */
122 bulk->b_md.options = PTL_MD_OP_PUT;
123 bulk->b_md.user_ptr = bulk;
125 rc = PtlMDBind(desc->b_connection->c_peer.peer_ni, bulk->b_md,
128 CERROR("PtlMDBind failed: %d\n", rc);
133 remote_id.nid = desc->b_connection->c_peer.peer_nid;
136 CDEBUG(D_NET, "Sending %d bytes to portal %d, xid %d\n",
137 bulk->b_md.length, desc->b_portal, bulk->b_xid);
139 rc = PtlPut(bulk->b_md_h, (ack ? PTL_ACK_REQ : PTL_NOACK_REQ),
140 remote_id, desc->b_portal, 0, bulk->b_xid, 0, 0);
142 CERROR("PtlPut(%Lu, %d, %d) failed: %d\n", remote_id.nid,
143 desc->b_portal, bulk->b_xid, rc);
144 PtlMDUnlink(bulk->b_md_h);
150 wait_event_interruptible(desc->b_waitq, ptlrpc_check_bulk_sent(desc));
152 if (desc->b_flags & PTL_RPC_FL_INTR)
158 int ptlrpc_register_bulk(struct ptlrpc_bulk_desc *desc)
160 struct list_head *tmp, *next;
164 list_for_each_safe(tmp, next, &desc->b_page_list) {
165 struct ptlrpc_bulk_page *bulk;
166 bulk = list_entry(tmp, struct ptlrpc_bulk_page, b_link);
168 rc = PtlMEAttach(desc->b_connection->c_peer.peer_ni,
169 desc->b_portal, local_id, bulk->b_xid, 0,
170 PTL_UNLINK, PTL_INS_AFTER, &bulk->b_me_h);
172 CERROR("PtlMEAttach failed: %d\n", rc);
177 bulk->b_md.start = bulk->b_buf;
178 bulk->b_md.length = bulk->b_buflen;
179 bulk->b_md.threshold = 1;
180 bulk->b_md.options = PTL_MD_OP_PUT;
181 bulk->b_md.user_ptr = bulk;
182 bulk->b_md.eventq = bulk_sink_eq;
184 rc = PtlMDAttach(bulk->b_me_h, bulk->b_md, PTL_UNLINK,
187 CERROR("PtlMDAttach failed: %d\n", rc);
192 CDEBUG(D_NET, "Setup bulk sink buffer: %u bytes, xid %u, "
193 "portal %u\n", bulk->b_buflen, bulk->b_xid,
200 ptlrpc_abort_bulk(desc);
205 int ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *desc)
207 struct list_head *tmp, *next;
209 list_for_each_safe(tmp, next, &desc->b_page_list) {
210 struct ptlrpc_bulk_page *bulk;
211 bulk = list_entry(tmp, struct ptlrpc_bulk_page, b_link);
213 /* This should be safe: these handles are initialized to be
214 * invalid in ptlrpc_prep_bulk_page() */
215 PtlMDUnlink(bulk->b_md_h);
216 PtlMEUnlink(bulk->b_me_h);
222 int ptlrpc_reply(struct ptlrpc_service *svc, struct ptlrpc_request *req)
224 /* FIXME: we need to increment the count of handled events */
225 req->rq_type = PTL_RPC_TYPE_REPLY;
226 req->rq_repmsg->conn = req->rq_connection->c_remote_conn;
227 req->rq_repmsg->token = req->rq_connection->c_remote_token;
228 req->rq_repmsg->xid = HTON__u32(req->rq_reqmsg->xid);
229 req->rq_repmsg->status = HTON__u32(req->rq_status);
230 req->rq_reqmsg->type = HTON__u32(req->rq_type);
231 return ptl_send_buf(req, req->rq_connection, svc->srv_rep_portal);
234 int ptlrpc_error(struct ptlrpc_service *svc, struct ptlrpc_request *req)
239 if (req->rq_repmsg) {
240 CERROR("req already has repmsg\n");
244 rc = lustre_pack_msg(0, NULL, NULL, &req->rq_replen, &req->rq_repmsg);
248 req->rq_repmsg->type = HTON__u32(PTL_RPC_MSG_ERR);
250 rc = ptlrpc_reply(svc, req);
255 int ptl_send_rpc(struct ptlrpc_request *request)
257 ptl_process_id_t local_id;
263 if (NTOH__u32(request->rq_reqmsg->type) != PTL_RPC_MSG_REQUEST) {
264 CERROR("wrong packet type sent %d\n",
265 NTOH__u32(request->rq_reqmsg->type));
269 if (request->rq_replen == 0) {
270 CERROR("request->rq_replen is 0!\n");
274 /* request->rq_repmsg is set only when the reply comes in, in
275 * client_packet_callback() */
276 if (request->rq_reply_md.start)
277 OBD_FREE(request->rq_reply_md.start, request->rq_replen);
279 OBD_ALLOC(repbuf, request->rq_replen);
285 local_id.nid = PTL_ID_ANY;
286 local_id.pid = PTL_ID_ANY;
288 down(&request->rq_client->cli_rpc_sem);
290 rc = PtlMEAttach(request->rq_connection->c_peer.peer_ni,
291 request->rq_client->cli_reply_portal,
292 local_id, request->rq_reqmsg->xid, 0, PTL_UNLINK,
293 PTL_INS_AFTER, &request->rq_reply_me_h);
295 CERROR("PtlMEAttach failed: %d\n", rc);
300 request->rq_type = PTL_RPC_TYPE_REQUEST;
301 request->rq_reply_md.start = repbuf;
302 request->rq_reply_md.length = request->rq_replen;
303 request->rq_reply_md.threshold = 1;
304 request->rq_reply_md.options = PTL_MD_OP_PUT;
305 request->rq_reply_md.user_ptr = request;
306 request->rq_reply_md.eventq = reply_in_eq;
308 rc = PtlMDAttach(request->rq_reply_me_h, request->rq_reply_md,
309 PTL_UNLINK, &request->rq_reply_md_h);
311 CERROR("PtlMDAttach failed: %d\n", rc);
316 CDEBUG(D_NET, "Setup reply buffer: %u bytes, xid %Lu, portal %u\n",
317 request->rq_replen, request->rq_xid,
318 request->rq_client->cli_reply_portal);
320 rc = ptl_send_buf(request, request->rq_connection,
321 request->rq_client->cli_request_portal);
325 PtlMEUnlink(request->rq_reply_me_h);
327 OBD_FREE(repbuf, request->rq_replen);
328 up(&request->rq_client->cli_rpc_sem);
333 void ptlrpc_link_svc_me(struct ptlrpc_service *service, int i)
337 ptl_handle_md_t md_h;
339 /* Attach the leading ME on which we build the ring */
340 rc = PtlMEAttach(service->srv_self.peer_ni, service->srv_req_portal,
341 local_id, 0, ~0, PTL_RETAIN, PTL_INS_BEFORE,
342 &(service->srv_me_h[i]));
344 CERROR("PtlMEAttach failed: %d\n", rc);
348 if (service->srv_ref_count[i])
351 dummy.start = service->srv_buf[i];
352 dummy.length = service->srv_buf_size;
353 dummy.max_offset = service->srv_buf_size;
354 dummy.threshold = PTL_MD_THRESH_INF;
355 dummy.options = PTL_MD_OP_PUT | PTL_MD_AUTO_UNLINK;
356 dummy.user_ptr = service;
357 dummy.eventq = service->srv_eq_h;
358 dummy.max_offset = service->srv_buf_size;
360 rc = PtlMDAttach(service->srv_me_h[i], dummy, PTL_UNLINK, &md_h);
363 CERROR("PtlMDAttach failed: %d\n", rc);
368 /* ptl_handled_rpc() should be called by the sleeping process once
369 * it finishes processing an event. This ensures the ref count is
370 * decremented and that the rpc ring buffer cycles properly.
372 int ptl_handled_rpc(struct ptlrpc_service *service, void *start)
376 spin_lock(&service->srv_lock);
378 for (index = 0; index < service->srv_ring_length; index++)
379 if (service->srv_buf[index] == start)
382 if (index == service->srv_ring_length)
385 CDEBUG(D_INFO, "MD index=%d Ref Count=%d\n", index,
386 service->srv_ref_count[index]);
387 service->srv_ref_count[index]--;
389 if (service->srv_ref_count[index] < 0)
392 if (service->srv_ref_count[index] == 0 &&
393 !ptl_is_valid_handle(&(service->srv_me_h[index]))) {
394 CDEBUG(D_NET, "relinking %d\n", index);
395 ptlrpc_link_svc_me(service, index);
398 spin_unlock(&service->srv_lock);