1 /*
2 * GPL HEADER START
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19 *
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
22 * have any questions.
23 *
24 * GPL HEADER END
25 */
26 /*
27 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 */
30 /*
31 * This file is part of Lustre, http://www.lustre.org/
32 * Lustre is a trademark of Sun Microsystems, Inc.
33 */
34
35 #define DEBUG_SUBSYSTEM S_RPC
36
37 #include "../include/obd_support.h"
38 #include "../include/obd_class.h"
39 #include "../include/lustre_lib.h"
40 #include "../include/lustre_ha.h"
41 #include "../include/lustre_import.h"
42
43 #include "ptlrpc_internal.h"
44
ptlrpc_fill_bulk_md(lnet_md_t * md,struct ptlrpc_bulk_desc * desc,int mdidx)45 void ptlrpc_fill_bulk_md(lnet_md_t *md, struct ptlrpc_bulk_desc *desc,
46 int mdidx)
47 {
48 CLASSERT(PTLRPC_MAX_BRW_PAGES < LI_POISON);
49
50 LASSERT(mdidx < desc->bd_md_max_brw);
51 LASSERT(desc->bd_iov_count <= PTLRPC_MAX_BRW_PAGES);
52 LASSERT(!(md->options & (LNET_MD_IOVEC | LNET_MD_KIOV |
53 LNET_MD_PHYS)));
54
55 md->options |= LNET_MD_KIOV;
56 md->length = max(0, desc->bd_iov_count - mdidx * LNET_MAX_IOV);
57 md->length = min_t(unsigned int, LNET_MAX_IOV, md->length);
58 if (desc->bd_enc_iov)
59 md->start = &desc->bd_enc_iov[mdidx * LNET_MAX_IOV];
60 else
61 md->start = &desc->bd_iov[mdidx * LNET_MAX_IOV];
62 }
63
ptlrpc_add_bulk_page(struct ptlrpc_bulk_desc * desc,struct page * page,int pageoffset,int len)64 void ptlrpc_add_bulk_page(struct ptlrpc_bulk_desc *desc, struct page *page,
65 int pageoffset, int len)
66 {
67 lnet_kiov_t *kiov = &desc->bd_iov[desc->bd_iov_count];
68
69 kiov->kiov_page = page;
70 kiov->kiov_offset = pageoffset;
71 kiov->kiov_len = len;
72
73 desc->bd_iov_count++;
74 }
75