3 * Boaz Harrosh <bharrosh@panasas.com>
5 * Public Declarations of the ORE API
7 * This file is part of the ORE (Object Raid Engine) library.
9 * ORE is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as published
11 * by the Free Software Foundation. (GPL v2)
13 * ORE is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with the ORE; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 #include <scsi/osd_initiator.h>
26 #include <scsi/osd_attributes.h>
27 #include <scsi/osd_sec.h>
28 #include <linux/pnfs_osd_xdr.h>
31 struct osd_obj_id obj;
36 /* Our way of looking at the data_map */
45 struct ore_components {
46 unsigned numdevs; /* Num of devices in array */
47 /* If @single_comp == EC_SINGLE_COMP, @comps points to a single
48 * component. else there are @numdevs components
51 EC_SINGLE_COMP = 0, EC_MULTPLE_COMPS = 0xffffffff
53 struct ore_comp *comps;
54 struct osd_dev **ods; /* osd_dev array */
58 typedef void (*ore_io_done_fn)(struct ore_io_state *ios, void *private);
66 struct ore_layout *layout;
67 struct ore_components *comps;
69 /* Global read/write IO*/
77 unsigned pages_consumed;
81 struct osd_attr *in_attr;
82 unsigned out_attr_len;
83 struct osd_attr *out_attr;
87 /* Variable array of size numdevs */
89 struct ore_per_dev_state {
90 struct osd_request *or;
98 static inline unsigned ore_io_state_size(unsigned numdevs)
100 return sizeof(struct ore_io_state) +
101 sizeof(struct ore_per_dev_state) * numdevs;
105 int ore_get_rw_state(struct ore_layout *layout, struct ore_components *comps,
106 bool is_reading, u64 offset, u64 length,
107 struct ore_io_state **ios);
108 int ore_get_io_state(struct ore_layout *layout, struct ore_components *comps,
109 struct ore_io_state **ios);
110 void ore_put_io_state(struct ore_io_state *ios);
112 int ore_check_io(struct ore_io_state *ios, u64 *resid);
114 int ore_create(struct ore_io_state *ios);
115 int ore_remove(struct ore_io_state *ios);
116 int ore_write(struct ore_io_state *ios);
117 int ore_read(struct ore_io_state *ios);
118 int ore_truncate(struct ore_layout *layout, struct ore_components *comps,
121 int extract_attr_from_ios(struct ore_io_state *ios, struct osd_attr *attr);
123 extern const struct osd_attr g_attr_logical_length;