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/module.h>
26 #include <linux/obd_support.h>
27 #include <linux/lustre_net.h>
29 ptl_handle_eq_t request_out_eq, reply_in_eq, reply_out_eq, bulk_source_eq,
31 static const ptl_handle_ni_t *socknal_nip = NULL, *qswnal_nip = NULL;
34 * Free the packet when it has gone out
36 static int request_out_callback(ptl_event_t *ev)
40 LASSERT ((ev->mem_desc.options & PTL_MD_IOV) == 0); /* requests always contiguous */
42 if (ev->type != PTL_EVENT_SENT) {
43 // XXX make sure we understand all events, including ACK's
44 CERROR("Unknown event %d\n", ev->type);
53 * Free the packet when it has gone out
55 static int reply_out_callback(ptl_event_t *ev)
59 LASSERT ((ev->mem_desc.options & PTL_MD_IOV) == 0); /* replies always contiguous */
61 if (ev->type == PTL_EVENT_SENT) {
62 OBD_FREE(ev->mem_desc.start, ev->mem_desc.length);
64 // XXX make sure we understand all events, including ACK's
65 CERROR("Unknown event %d\n", ev->type);
73 * Wake up the thread waiting for the reply once it comes in.
75 static int reply_in_callback(ptl_event_t *ev)
77 struct ptlrpc_request *req = ev->mem_desc.user_ptr;
80 LASSERT ((ev->mem_desc.options & PTL_MD_IOV) == 0); /* replies always contiguous */
82 if (req->rq_xid == 0x5a5a5a5a5a5a5a5a) {
83 CERROR("Reply received for freed request! Probably a missing "
88 if (req->rq_xid != ev->match_bits) {
89 CERROR("Reply packet for wrong request\n");
93 if (ev->type == PTL_EVENT_PUT) {
94 req->rq_repmsg = ev->mem_desc.start + ev->offset;
96 wake_up(&req->rq_wait_for_rep);
98 // XXX make sure we understand all events, including ACK's
99 CERROR("Unknown event %d\n", ev->type);
106 int request_in_callback(ptl_event_t *ev)
108 struct ptlrpc_service *service = ev->mem_desc.user_ptr;
110 LASSERT ((ev->mem_desc.options & PTL_MD_IOV) == 0); /* requests always contiguous */
112 if (ev->rlength != ev->mlength)
113 CERROR("Warning: Possibly truncated rpc (%d/%d)\n",
114 ev->mlength, ev->rlength);
116 if (ev->type == PTL_EVENT_PUT)
117 wake_up(&service->srv_waitq);
119 CERROR("Unexpected event type: %d\n", ev->type);
124 static int bulk_source_callback(ptl_event_t *ev)
126 struct ptlrpc_bulk_desc *desc = ev->mem_desc.user_ptr;
127 struct ptlrpc_bulk_page *bulk;
128 struct list_head *tmp;
129 struct list_head *next;
132 /* 1 fragment for each page always */
133 LASSERT (ev->mem_desc.niov == desc->b_page_count);
135 if (ev->type == PTL_EVENT_SENT) {
136 CDEBUG(D_NET, "got SENT event\n");
137 } else if (ev->type == PTL_EVENT_ACK) {
138 CDEBUG(D_NET, "got ACK event\n");
140 list_for_each_safe(tmp, next, &desc->b_page_list) {
141 bulk = list_entry(tmp, struct ptlrpc_bulk_page, b_link);
143 if (bulk->b_cb != NULL)
146 desc->b_flags |= PTL_BULK_FL_SENT;
147 wake_up(&desc->b_waitq);
148 if (desc->b_cb != NULL)
149 desc->b_cb(desc, desc->b_cb_data);
151 CERROR("Unexpected event type!\n");
158 static int bulk_sink_callback(ptl_event_t *ev)
160 struct ptlrpc_bulk_desc *desc = ev->mem_desc.user_ptr;
161 struct ptlrpc_bulk_page *bulk;
162 struct list_head *tmp;
163 struct list_head *next;
164 ptl_size_t total = 0;
167 if (ev->type == PTL_EVENT_PUT) {
168 /* put with zero offset */
169 LASSERT (ev->offset == 0);
171 LASSERT ((ev->mem_desc.options & PTL_MD_IOV) != 0);
172 /* 1 fragment for each page always */
173 LASSERT (ev->mem_desc.niov == desc->b_page_count);
175 list_for_each_safe (tmp, next, &desc->b_page_list) {
176 bulk = list_entry(tmp, struct ptlrpc_bulk_page, b_link);
178 total += bulk->b_buflen;
180 if (bulk->b_cb != NULL)
184 LASSERT (ev->mem_desc.length == total);
186 desc->b_flags |= PTL_BULK_FL_RCVD;
187 wake_up(&desc->b_waitq);
188 if (desc->b_cb != NULL)
189 desc->b_cb(desc, desc->b_cb_data);
191 CERROR("Unexpected event type!\n");
198 int ptlrpc_init_portals(void)
203 socknal_nip = inter_module_get_request("ksocknal_ni", "ksocknal");
204 qswnal_nip = inter_module_get_request("kqswnal_ni", "kqswnal");
205 if (socknal_nip == NULL && qswnal_nip == NULL) {
206 CERROR("get_ni failed: is a NAL module loaded?\n");
210 /* Use the qswnal if it's there */
211 if (qswnal_nip != NULL)
216 rc = PtlEQAlloc(ni, 1024, request_out_callback, &request_out_eq);
218 CERROR("PtlEQAlloc failed: %d\n", rc);
220 rc = PtlEQAlloc(ni, 1024, reply_out_callback, &reply_out_eq);
222 CERROR("PtlEQAlloc failed: %d\n", rc);
224 rc = PtlEQAlloc(ni, 1024, reply_in_callback, &reply_in_eq);
226 CERROR("PtlEQAlloc failed: %d\n", rc);
228 rc = PtlEQAlloc(ni, 1024, bulk_source_callback, &bulk_source_eq);
230 CERROR("PtlEQAlloc failed: %d\n", rc);
232 rc = PtlEQAlloc(ni, 1024, bulk_sink_callback, &bulk_sink_eq);
234 CERROR("PtlEQAlloc failed: %d\n", rc);
239 void ptlrpc_exit_portals(void)
241 PtlEQFree(request_out_eq);
242 PtlEQFree(reply_out_eq);
243 PtlEQFree(reply_in_eq);
244 PtlEQFree(bulk_source_eq);
245 PtlEQFree(bulk_sink_eq);
247 if (qswnal_nip != NULL)
248 inter_module_put("kqswnal_ni");
249 if (socknal_nip != NULL)
250 inter_module_put("ksocknal_ni");