| Boaz Harrosh | 09f5bf4 | 2011-05-22 19:50:20 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Data types and function declerations for interfacing with the |
| 3 | * pNFS standard object layout driver. |
| 4 | * |
| 5 | * Copyright (C) 2007 Panasas Inc. [year of first publication] |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * Benny Halevy <bhalevy@panasas.com> |
| 9 | * Boaz Harrosh <bharrosh@panasas.com> |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License version 2 |
| 13 | * See the file COPYING included with this distribution for more details. |
| 14 | * |
| 15 | * Redistribution and use in source and binary forms, with or without |
| 16 | * modification, are permitted provided that the following conditions |
| 17 | * are met: |
| 18 | * |
| 19 | * 1. Redistributions of source code must retain the above copyright |
| 20 | * notice, this list of conditions and the following disclaimer. |
| 21 | * 2. Redistributions in binary form must reproduce the above copyright |
| 22 | * notice, this list of conditions and the following disclaimer in the |
| 23 | * documentation and/or other materials provided with the distribution. |
| 24 | * 3. Neither the name of the Panasas company nor the names of its |
| 25 | * contributors may be used to endorse or promote products derived |
| 26 | * from this software without specific prior written permission. |
| 27 | * |
| 28 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 29 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 30 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 31 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 32 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 33 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 34 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 35 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 36 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 37 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 38 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 39 | */ |
| 40 | |
| 41 | #ifndef _OBJLAYOUT_H |
| 42 | #define _OBJLAYOUT_H |
| 43 | |
| 44 | #include <linux/nfs_fs.h> |
| 45 | #include <linux/pnfs_osd_xdr.h> |
| 46 | #include "../pnfs.h" |
| 47 | |
| 48 | /* |
| 49 | * Raid engine I/O API |
| 50 | */ |
| 51 | extern int objio_alloc_lseg(struct pnfs_layout_segment **outp, |
| 52 | struct pnfs_layout_hdr *pnfslay, |
| 53 | struct pnfs_layout_range *range, |
| 54 | struct xdr_stream *xdr, |
| 55 | gfp_t gfp_flags); |
| 56 | extern void objio_free_lseg(struct pnfs_layout_segment *lseg); |
| 57 | |
| 58 | /* |
| Boaz Harrosh | b6c05f1 | 2011-05-26 21:45:34 +0300 | [diff] [blame^] | 59 | * callback API |
| 60 | */ |
| 61 | extern int objlayout_get_deviceinfo(struct pnfs_layout_hdr *pnfslay, |
| 62 | struct nfs4_deviceid *d_id, struct pnfs_osd_deviceaddr **deviceaddr, |
| 63 | gfp_t gfp_flags); |
| 64 | extern void objlayout_put_deviceinfo(struct pnfs_osd_deviceaddr *deviceaddr); |
| 65 | |
| 66 | /* |
| Boaz Harrosh | 09f5bf4 | 2011-05-22 19:50:20 +0300 | [diff] [blame] | 67 | * exported generic objects function vectors |
| 68 | */ |
| 69 | extern struct pnfs_layout_segment *objlayout_alloc_lseg( |
| 70 | struct pnfs_layout_hdr *, |
| 71 | struct nfs4_layoutget_res *, |
| 72 | gfp_t gfp_flags); |
| 73 | extern void objlayout_free_lseg(struct pnfs_layout_segment *); |
| 74 | |
| 75 | #endif /* _OBJLAYOUT_H */ |