-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (c) 2004 Cluster File Systems, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of the Lustre file system, http://www.lustre.org
- * Lustre is a trademark of Cluster File Systems, Inc.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * You may have signed or agreed to another license before downloading
- * this software. If so, you are bound by the terms and conditions
- * of that agreement, and the following does not apply to you. See the
- * LICENSE file included with this distribution for more information.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * If you did not agree to a different license, then this copy of Lustre
- * is open source software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
- * In either case, Lustre is distributed in the hope that it will be
- * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * license text for more details.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2015, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_RPC
-#ifndef __KERNEL__
-#include <errno.h>
-#include <signal.h>
-#include <liblustre.h>
-#endif
#include <obd_support.h>
#include <obd_class.h>
#include "ptlrpc_internal.h"
-#ifdef __KERNEL__
-
-void ptlrpc_fill_bulk_md (lnet_md_t *md, struct ptlrpc_bulk_desc *desc)
-{
- LASSERT (desc->bd_iov_count <= PTLRPC_MAX_BRW_PAGES);
- LASSERT (!(md->options & (LNET_MD_IOVEC | LNET_MD_KIOV | LNET_MD_PHYS)));
-
- md->options |= LNET_MD_KIOV;
- md->start = &desc->bd_iov[0];
- md->length = desc->bd_iov_count;
-}
-
-void ptlrpc_add_bulk_page(struct ptlrpc_bulk_desc *desc, cfs_page_t *page,
- int pageoffset, int len)
-{
- lnet_kiov_t *kiov = &desc->bd_iov[desc->bd_iov_count];
-
- kiov->kiov_page = page;
- kiov->kiov_offset = pageoffset;
- kiov->kiov_len = len;
- desc->bd_iov_count++;
-}
-
-void ptl_rpc_wipe_bulk_pages(struct ptlrpc_bulk_desc *desc)
+void ptlrpc_fill_bulk_md(struct lnet_md *md, struct ptlrpc_bulk_desc *desc,
+ int mdidx)
{
- int i;
-
- for (i = 0; i < desc->bd_iov_count ; i++) {
- lnet_kiov_t *kiov = &desc->bd_iov[i];
- memset(cfs_kmap(kiov->kiov_page)+kiov->kiov_offset, 0xab,
- kiov->kiov_len);
- cfs_kunmap(kiov->kiov_page);
- }
+ BUILD_BUG_ON(PTLRPC_MAX_BRW_PAGES >= LI_POISON);
+
+ LASSERT(mdidx < desc->bd_md_max_brw);
+ LASSERT(desc->bd_iov_count <= PTLRPC_MAX_BRW_PAGES);
+ LASSERT(!(md->options & (LNET_MD_IOVEC | LNET_MD_KIOV |
+ LNET_MD_PHYS)));
+
+ md->length = max(0, desc->bd_iov_count - mdidx * LNET_MAX_IOV);
+ md->length = min_t(unsigned int, LNET_MAX_IOV, md->length);
+
+ if (ptlrpc_is_bulk_desc_kiov(desc->bd_type)) {
+ md->options |= LNET_MD_KIOV;
+ if (GET_ENC_KIOV(desc))
+ md->start = &BD_GET_ENC_KIOV(desc, mdidx *
+ LNET_MAX_IOV);
+ else
+ md->start = &BD_GET_KIOV(desc, mdidx * LNET_MAX_IOV);
+ } else if (ptlrpc_is_bulk_desc_kvec(desc->bd_type)) {
+ md->options |= LNET_MD_IOVEC;
+ if (GET_ENC_KVEC(desc))
+ md->start = &BD_GET_ENC_KVEC(desc, mdidx *
+ LNET_MAX_IOV);
+ else
+ md->start = &BD_GET_KVEC(desc, mdidx * LNET_MAX_IOV);
+ }
}
-#else /* !__KERNEL__ */
-void ptlrpc_fill_bulk_md(lnet_md_t *md, struct ptlrpc_bulk_desc *desc)
-{
- LASSERT (!(md->options & (LNET_MD_IOVEC | LNET_MD_KIOV | LNET_MD_PHYS)));
- if (desc->bd_iov_count == 1) {
- md->start = desc->bd_iov[0].iov_base;
- md->length = desc->bd_iov[0].iov_len;
- return;
- }
-
- md->options |= LNET_MD_IOVEC;
- md->start = &desc->bd_iov[0];
- md->length = desc->bd_iov_count;
-}
-
-static int can_merge_iovs(lnet_md_iovec_t *existing, lnet_md_iovec_t *candidate)
-{
- if (existing->iov_base + existing->iov_len == candidate->iov_base)
- return 1;
-#if 0
- /* Enable this section to provide earlier evidence of fragmented bulk */
- CERROR("Can't merge iovs %p for %x, %p for %x\n",
- existing->iov_base, existing->iov_len,
- candidate->iov_base, candidate->iov_len);
-#endif
- return 0;
-}
-
-void ptlrpc_add_bulk_page(struct ptlrpc_bulk_desc *desc, cfs_page_t *page,
- int pageoffset, int len)
-{
- lnet_md_iovec_t *iov = &desc->bd_iov[desc->bd_iov_count];
-
- iov->iov_base = page->addr + pageoffset;
- iov->iov_len = len;
-
- if (desc->bd_iov_count > 0 && can_merge_iovs(iov - 1, iov)) {
- (iov - 1)->iov_len += len;
- } else {
- desc->bd_iov_count++;
- }
-}
-
-void ptl_rpc_wipe_bulk_pages(struct ptlrpc_bulk_desc *desc)
-{
- int i;
-
- for(i = 0; i < desc->bd_iov_count; i++) {
- lnet_md_iovec_t *iov = &desc->bd_iov[i];
-
- memset(iov->iov_base, 0xab, iov->iov_len);
- }
-}
-#endif /* !__KERNEL__ */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff