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.
25 #define DEBUG_SUBSYSTEM S_RPC
27 #include <linux/lustre_net.h>
29 extern ptl_handle_eq_t request_out_eq,
34 static ptl_process_id_t local_id = {PTL_ID_ANY, PTL_ID_ANY};
37 int ptlrpc_check_bulk_sent(struct ptlrpc_bulk_desc *bulk)
41 if (bulk->b_flags & PTL_BULK_FL_SENT)
44 if (sigismember(&(current->pending.signal), SIGKILL) ||
45 sigismember(&(current->pending.signal), SIGINT)) {
46 bulk->b_flags |= PTL_RPC_FL_INTR;
50 CDEBUG(D_NET, "no event yet\n");
54 static int ptl_send_buf(struct ptlrpc_request *request,
55 struct ptlrpc_connection *conn, int portal)
58 ptl_process_id_t remote_id;
62 request->rq_req_md.user_ptr = request;
64 switch (request->rq_type) {
65 case PTL_RPC_TYPE_REQUEST:
66 request->rq_req_md.start = request->rq_reqmsg;
67 request->rq_req_md.length = request->rq_reqlen;
68 request->rq_req_md.eventq = request_out_eq;
69 request->rq_req_md.threshold = 1;
72 case PTL_RPC_TYPE_REPLY:
73 request->rq_req_md.start = request->rq_repmsg;
74 request->rq_req_md.length = request->rq_replen;
75 request->rq_req_md.eventq = reply_out_eq;
76 request->rq_req_md.threshold = 1;
81 return -1; /* notreached */
83 request->rq_req_md.options = PTL_MD_OP_PUT;
84 request->rq_req_md.user_ptr = request;
86 rc = PtlMDBind(conn->c_peer.peer_ni, request->rq_req_md, &md_h);
87 //CERROR("MDBind (outgoing req/rep/bulk): %Lu\n", (__u64)md_h);
89 CERROR("PtlMDBind failed: %d\n", rc);
94 remote_id.nid = conn->c_peer.peer_nid;
97 CDEBUG(D_NET, "Sending %d bytes to portal %d, xid %d\n",
98 request->rq_req_md.length, portal, request->rq_reqmsg->xid);
100 rc = PtlPut(md_h, ack, remote_id, portal, 0, request->rq_reqmsg->xid,
103 CERROR("PtlPut(%d, %d, %d) failed: %d\n", remote_id.nid,
104 portal, request->rq_reqmsg->xid, rc);
111 int ptlrpc_send_bulk(struct ptlrpc_bulk_desc *bulk, int portal)
114 ptl_process_id_t remote_id;
116 bulk->b_md.start = bulk->b_buf;
117 bulk->b_md.length = bulk->b_buflen;
118 bulk->b_md.eventq = bulk_source_eq;
119 bulk->b_md.threshold = 2; /* SENT and ACK events */
120 bulk->b_md.options = PTL_MD_OP_PUT;
121 bulk->b_md.user_ptr = bulk;
123 rc = PtlMDBind(bulk->b_connection->c_peer.peer_ni, bulk->b_md,
126 CERROR("PtlMDBind failed: %d\n", rc);
131 remote_id.nid = bulk->b_connection->c_peer.peer_nid;
134 CDEBUG(D_NET, "Sending %d bytes to portal %d, xid %d\n",
135 bulk->b_md.length, portal, bulk->b_xid);
137 rc = PtlPut(bulk->b_md_h, PTL_ACK_REQ, remote_id, portal, 0,
140 CERROR("PtlPut(%d, %d, %d) failed: %d\n", remote_id.nid,
141 portal, bulk->b_xid, rc);
142 PtlMDUnlink(bulk->b_md_h);
149 int ptlrpc_register_bulk(struct ptlrpc_bulk_desc *bulk)
154 rc = PtlMEAttach(bulk->b_connection->c_peer.peer_ni, bulk->b_portal,
155 local_id, bulk->b_xid, 0, PTL_UNLINK, PTL_INS_AFTER,
158 CERROR("PtlMEAttach failed: %d\n", rc);
163 bulk->b_md.start = bulk->b_buf;
164 bulk->b_md.length = bulk->b_buflen;
165 bulk->b_md.threshold = 1;
166 bulk->b_md.options = PTL_MD_OP_PUT;
167 bulk->b_md.user_ptr = bulk;
168 bulk->b_md.eventq = bulk_sink_eq;
170 rc = PtlMDAttach(bulk->b_me_h, bulk->b_md, PTL_UNLINK, &bulk->b_md_h);
171 //CERROR("MDAttach (bulk sink): %Lu\n", (__u64)bulk->b_md_h);
173 CERROR("PtlMDAttach failed: %d\n", rc);
178 CDEBUG(D_NET, "Setup bulk sink buffer: %u bytes, xid %u, portal %u\n",
179 bulk->b_buflen, bulk->b_xid, bulk->b_portal);
182 // XXX Confirm that this is safe!
184 PtlMEUnlink(bulk->b_me_h);
188 int ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *bulk)
192 rc = PtlMEUnlink(bulk->b_me_h);
194 CERROR("PtlMEUnlink failed: %d\n", rc);
199 int ptlrpc_reply(struct ptlrpc_service *svc, struct ptlrpc_request *req)
201 /* FIXME: we need to increment the count of handled events */
202 req->rq_type = PTL_RPC_TYPE_REPLY;
203 req->rq_repmsg->conn = req->rq_connection->c_remote_conn;
204 req->rq_repmsg->token = req->rq_connection->c_remote_token;
205 req->rq_repmsg->xid = HTON__u32(req->rq_reqmsg->xid);
206 req->rq_repmsg->status = HTON__u32(req->rq_status);
207 req->rq_reqmsg->type = HTON__u32(req->rq_type);
208 return ptl_send_buf(req, req->rq_connection, svc->srv_rep_portal);
211 int ptlrpc_error(struct ptlrpc_service *svc, struct ptlrpc_request *req)
216 if (req->rq_repmsg) {
217 CERROR("req already has repmsg\n");
221 rc = lustre_pack_msg(0, NULL, NULL, &req->rq_replen, &req->rq_repmsg);
225 req->rq_repmsg->type = HTON__u32(PTL_RPC_MSG_ERR);
227 rc = ptlrpc_reply(svc, req);
231 int ptl_send_rpc(struct ptlrpc_request *request)
233 ptl_process_id_t local_id;
239 if (NTOH__u32(request->rq_reqmsg->type) != PTL_RPC_MSG_REQUEST) {
240 CERROR("wrong packet type sent %d\n",
241 NTOH__u32(request->rq_reqmsg->type));
245 if (request->rq_replen == 0) {
246 CERROR("request->rq_replen is 0!\n");
250 /* request->rq_repmsg is set only when the reply comes in, in
251 * client_packet_callback() */
252 OBD_ALLOC(repbuf, request->rq_replen);
256 local_id.nid = PTL_ID_ANY;
257 local_id.pid = PTL_ID_ANY;
259 down(&request->rq_client->cli_rpc_sem);
261 rc = PtlMEAttach(request->rq_connection->c_peer.peer_ni,
262 request->rq_client->cli_reply_portal,
263 local_id, request->rq_reqmsg->xid, 0, PTL_UNLINK,
264 PTL_INS_AFTER, &request->rq_reply_me_h);
266 CERROR("PtlMEAttach failed: %d\n", rc);
271 request->rq_type = PTL_RPC_TYPE_REQUEST;
272 request->rq_reply_md.start = repbuf;
273 request->rq_reply_md.length = request->rq_replen;
274 request->rq_reply_md.threshold = 1;
275 request->rq_reply_md.options = PTL_MD_OP_PUT;
276 request->rq_reply_md.user_ptr = request;
277 request->rq_reply_md.eventq = reply_in_eq;
279 rc = PtlMDAttach(request->rq_reply_me_h, request->rq_reply_md,
280 PTL_UNLINK, &request->rq_reply_md_h);
282 CERROR("PtlMDAttach failed: %d\n", rc);
287 CDEBUG(D_NET, "Setup reply buffer: %u bytes, xid %u, portal %u\n",
288 request->rq_replen, request->rq_reqmsg->xid,
289 request->rq_client->cli_request_portal);
291 spin_lock(&request->rq_client->cli_lock);
292 list_add(&request->rq_list, &request->rq_client->cli_sending_head);
293 spin_unlock(&request->rq_client->cli_lock);
295 rc = ptl_send_buf(request, request->rq_connection,
296 request->rq_client->cli_request_portal);
300 PtlMEUnlink(request->rq_reply_me_h);
302 OBD_FREE(repbuf, request->rq_replen);
303 up(&request->rq_client->cli_rpc_sem);
308 void ptlrpc_link_svc_me(struct ptlrpc_service *service, int i)
312 ptl_handle_md_t md_h;
314 /* Attach the leading ME on which we build the ring */
315 rc = PtlMEAttach(service->srv_self.peer_ni, service->srv_req_portal,
316 service->srv_id, 0, ~0, PTL_RETAIN, PTL_INS_BEFORE,
317 &(service->srv_me_h[i]));
319 CERROR("PtlMEAttach failed: %d\n", rc);
323 if (service->srv_ref_count[i])
326 dummy.start = service->srv_buf[i];
327 dummy.length = service->srv_buf_size;
328 dummy.max_offset = service->srv_buf_size;
329 dummy.threshold = PTL_MD_THRESH_INF;
330 dummy.options = PTL_MD_OP_PUT | PTL_MD_AUTO_UNLINK;
331 dummy.user_ptr = service;
332 dummy.eventq = service->srv_eq_h;
333 dummy.max_offset = service->srv_buf_size;
335 rc = PtlMDAttach(service->srv_me_h[i], dummy, PTL_UNLINK, &md_h);
338 CERROR("PtlMDAttach failed: %d\n", rc);
343 /* ptl_handled_rpc() should be called by the sleeping process once
344 * it finishes processing an event. This ensures the ref count is
345 * decremented and that the rpc ring buffer cycles properly.
347 int ptl_handled_rpc(struct ptlrpc_service *service, void *start)
351 spin_lock(&service->srv_lock);
353 for (index = 0; index < service->srv_ring_length; index++)
354 if (service->srv_buf[index] == start)
357 if (index == service->srv_ring_length)
360 CDEBUG(D_INFO, "MD index=%d Ref Count=%d\n", index,
361 service->srv_ref_count[index]);
362 service->srv_ref_count[index]--;
364 if (service->srv_ref_count[index] < 0)
367 if (service->srv_ref_count[index] == 0 &&
368 !ptl_is_valid_handle(&(service->srv_me_h[index]))) {
369 CDEBUG(D_NET, "relinking %d\n", index);
370 ptlrpc_link_svc_me(service, index);
373 spin_unlock(&service->srv_lock);