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[SCSI] libosd: Free resources in reverse order of allocation
[net-next-2.6.git] / drivers / scsi / osd / osd_initiator.c
CommitLineData
02941a53
BH		 1/*
2 * osd_initiator - Main body of the osd initiator library.
3 *
4 * Note: The file does not contain the advanced security functionality which
5 * is only needed by the security_manager's initiators.
6 *
7 * Copyright (C) 2008 Panasas Inc. All rights reserved.
8 *
9 * Authors:
10 * Boaz Harrosh <bharrosh@panasas.com>
11 * Benny Halevy <bhalevy@panasas.com>
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 *
20 * 1. Redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution.
25 * 3. Neither the name of the Panasas company nor the names of its
26 * contributors may be used to endorse or promote products derived
27 * from this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
30 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
31 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
32 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
34 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
35 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
36 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
37 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
38 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
39 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 */
41
5a0e3ad6
TH		 42#include <linux/slab.h>
43
02941a53
BH		 44#include <scsi/osd_initiator.h>
45#include <scsi/osd_sec.h>
1b9dce94 46#include <scsi/osd_attributes.h>
98f3aea2
BH		 47#include <scsi/osd_sense.h>
48
02941a53
BH		 49#include <scsi/scsi_device.h>
50
51#include "osd_debug.h"
52
4ef1a3d7
BH		 53#ifndef __unused
54# define __unused __attribute__((unused))
55#endif
56
02941a53
BH		 57enum { OSD_REQ_RETRIES = 1 };
58
59MODULE_AUTHOR("Boaz Harrosh <bharrosh@panasas.com>");
60MODULE_DESCRIPTION("open-osd initiator library libosd.ko");
61MODULE_LICENSE("GPL");
62
63static inline void build_test(void)
64{
65 /* structures were not packed */
66 BUILD_BUG_ON(sizeof(struct osd_capability) != OSD_CAP_LEN);
c6572c98 67 BUILD_BUG_ON(sizeof(struct osdv2_cdb) != OSD_TOTAL_CDB_LEN);
02941a53
BH		 68 BUILD_BUG_ON(sizeof(struct osdv1_cdb) != OSDv1_TOTAL_CDB_LEN);
69}
70
1b9dce94
BH		 71static const char *_osd_ver_desc(struct osd_request *or)
72{
73 return osd_req_is_ver1(or) ? "OSD1" : "OSD2";
74}
75
76#define ATTR_DEF_RI(id, len) ATTR_DEF(OSD_APAGE_ROOT_INFORMATION, id, len)
77
2cdd6410
BH		 78static int _osd_get_print_system_info(struct osd_dev *od,
79 void *caps, struct osd_dev_info *odi)
1b9dce94
BH		 80{
81 struct osd_request *or;
82 struct osd_attr get_attrs[] = {
83 ATTR_DEF_RI(OSD_ATTR_RI_VENDOR_IDENTIFICATION, 8),
84 ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_IDENTIFICATION, 16),
85 ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_MODEL, 32),
86 ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_REVISION_LEVEL, 4),
87 ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_SERIAL_NUMBER, 64 /*variable*/),
88 ATTR_DEF_RI(OSD_ATTR_RI_OSD_NAME, 64 /*variable*/),
89 ATTR_DEF_RI(OSD_ATTR_RI_TOTAL_CAPACITY, 8),
90 ATTR_DEF_RI(OSD_ATTR_RI_USED_CAPACITY, 8),
91 ATTR_DEF_RI(OSD_ATTR_RI_NUMBER_OF_PARTITIONS, 8),
92 ATTR_DEF_RI(OSD_ATTR_RI_CLOCK, 6),
93 /* IBM-OSD-SIM Has a bug with this one put it last */
94 ATTR_DEF_RI(OSD_ATTR_RI_OSD_SYSTEM_ID, 20),
95 };
96 void *iter = NULL, *pFirst;
97 int nelem = ARRAY_SIZE(get_attrs), a = 0;
98 int ret;
99
100 or = osd_start_request(od, GFP_KERNEL);
101 if (!or)
102 return -ENOMEM;
103
104 /* get attrs */
105 osd_req_get_attributes(or, &osd_root_object);
106 osd_req_add_get_attr_list(or, get_attrs, ARRAY_SIZE(get_attrs));
107
108 ret = osd_finalize_request(or, 0, caps, NULL);
109 if (ret)
110 goto out;
111
112 ret = osd_execute_request(or);
113 if (ret) {
114 OSD_ERR("Failed to detect %s => %d\n", _osd_ver_desc(or), ret);
115 goto out;
116 }
117
118 osd_req_decode_get_attr_list(or, get_attrs, &nelem, &iter);
119
120 OSD_INFO("Detected %s device\n",
121 _osd_ver_desc(or));
122
123 pFirst = get_attrs[a++].val_ptr;
de6b2038 124 OSD_INFO("VENDOR_IDENTIFICATION [%s]\n",
1b9dce94
BH		 125 (char *)pFirst);
126
127 pFirst = get_attrs[a++].val_ptr;
de6b2038 128 OSD_INFO("PRODUCT_IDENTIFICATION [%s]\n",
1b9dce94
BH		 129 (char *)pFirst);
130
131 pFirst = get_attrs[a++].val_ptr;
de6b2038 132 OSD_INFO("PRODUCT_MODEL [%s]\n",
1b9dce94
BH		 133 (char *)pFirst);
134
135 pFirst = get_attrs[a++].val_ptr;
de6b2038 136 OSD_INFO("PRODUCT_REVISION_LEVEL [%u]\n",
97218a14 137 pFirst ? get_unaligned_be32(pFirst) : ~0U);
1b9dce94
BH		 138
139 pFirst = get_attrs[a++].val_ptr;
de6b2038 140 OSD_INFO("PRODUCT_SERIAL_NUMBER [%s]\n",
1b9dce94
BH		 141 (char *)pFirst);
142
2cdd6410
BH		 143 odi->osdname_len = get_attrs[a].len;
144 /* Avoid NULL for memcmp optimization 0-length is good enough */
145 odi->osdname = kzalloc(odi->osdname_len + 1, GFP_KERNEL);
146 if (odi->osdname_len)
147 memcpy(odi->osdname, get_attrs[a].val_ptr, odi->osdname_len);
148 OSD_INFO("OSD_NAME [%s]\n", odi->osdname);
1b9dce94
BH		 149 a++;
150
151 pFirst = get_attrs[a++].val_ptr;
de6b2038 152 OSD_INFO("TOTAL_CAPACITY [0x%llx]\n",
97218a14 153 pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL);
1b9dce94
BH		 154
155 pFirst = get_attrs[a++].val_ptr;
de6b2038 156 OSD_INFO("USED_CAPACITY [0x%llx]\n",
97218a14 157 pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL);
1b9dce94
BH		 158
159 pFirst = get_attrs[a++].val_ptr;
de6b2038 160 OSD_INFO("NUMBER_OF_PARTITIONS [%llu]\n",
97218a14
BH		 161 pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL);
162
163 if (a >= nelem)
164 goto out;
1b9dce94
BH		 165
166 /* FIXME: Where are the time utilities */
167 pFirst = get_attrs[a++].val_ptr;
de6b2038 168 OSD_INFO("CLOCK [0x%02x%02x%02x%02x%02x%02x]\n",
1b9dce94
BH		 169 ((char *)pFirst)[0], ((char *)pFirst)[1],
170 ((char *)pFirst)[2], ((char *)pFirst)[3],
171 ((char *)pFirst)[4], ((char *)pFirst)[5]);
172
173 if (a < nelem) { /* IBM-OSD-SIM bug, Might not have it */
174 unsigned len = get_attrs[a].len;
175 char sid_dump[32*4 + 2]; /* 2nibbles+space+ASCII */
176
177 hex_dump_to_buffer(get_attrs[a].val_ptr, len, 32, 1,
178 sid_dump, sizeof(sid_dump), true);
de6b2038
BH		 179 OSD_INFO("OSD_SYSTEM_ID(%d)\n"
180 " [%s]\n", len, sid_dump);
2cdd6410
BH		 181
182 if (unlikely(len > sizeof(odi->systemid))) {
183 OSD_ERR("OSD Target error: OSD_SYSTEM_ID too long(%d). "
184 "device idetification might not work\n", len);
185 len = sizeof(odi->systemid);
186 }
187 odi->systemid_len = len;
188 memcpy(odi->systemid, get_attrs[a].val_ptr, len);
1b9dce94
BH		 189 a++;
190 }
191out:
192 osd_end_request(or);
193 return ret;
194}
195
2cdd6410
BH		 196int osd_auto_detect_ver(struct osd_dev *od,
197 void *caps, struct osd_dev_info *odi)
1b9dce94
BH		 198{
199 int ret;
200
201 /* Auto-detect the osd version */
2cdd6410 202 ret = _osd_get_print_system_info(od, caps, odi);
1b9dce94
BH		 203 if (ret) {
204 osd_dev_set_ver(od, OSD_VER1);
205 OSD_DEBUG("converting to OSD1\n");
2cdd6410 206 ret = _osd_get_print_system_info(od, caps, odi);
1b9dce94
BH		 207 }
208
209 return ret;
210}
211EXPORT_SYMBOL(osd_auto_detect_ver);
212
02941a53
BH		 213static unsigned _osd_req_cdb_len(struct osd_request *or)
214{
c6572c98 215 return osd_req_is_ver1(or) ? OSDv1_TOTAL_CDB_LEN : OSD_TOTAL_CDB_LEN;
02941a53
BH		 216}
217
4ef1a3d7
BH		 218static unsigned _osd_req_alist_elem_size(struct osd_request *or, unsigned len)
219{
c6572c98
BH		 220 return osd_req_is_ver1(or) ?
221 osdv1_attr_list_elem_size(len) :
222 osdv2_attr_list_elem_size(len);
4ef1a3d7
BH		 223}
224
71f32e31
BH		 225static void _osd_req_alist_elem_encode(struct osd_request *or,
226 void *attr_last, const struct osd_attr *oa)
227{
228 if (osd_req_is_ver1(or)) {
229 struct osdv1_attributes_list_element *attr = attr_last;
230
231 attr->attr_page = cpu_to_be32(oa->attr_page);
232 attr->attr_id = cpu_to_be32(oa->attr_id);
233 attr->attr_bytes = cpu_to_be16(oa->len);
234 memcpy(attr->attr_val, oa->val_ptr, oa->len);
235 } else {
236 struct osdv2_attributes_list_element *attr = attr_last;
237
238 attr->attr_page = cpu_to_be32(oa->attr_page);
239 attr->attr_id = cpu_to_be32(oa->attr_id);
240 attr->attr_bytes = cpu_to_be16(oa->len);
241 memcpy(attr->attr_val, oa->val_ptr, oa->len);
242 }
243}
244
245static int _osd_req_alist_elem_decode(struct osd_request *or,
246 void *cur_p, struct osd_attr *oa, unsigned max_bytes)
247{
248 unsigned inc;
249 if (osd_req_is_ver1(or)) {
250 struct osdv1_attributes_list_element *attr = cur_p;
251
252 if (max_bytes < sizeof(*attr))
253 return -1;
254
255 oa->len = be16_to_cpu(attr->attr_bytes);
256 inc = _osd_req_alist_elem_size(or, oa->len);
257 if (inc > max_bytes)
258 return -1;
259
260 oa->attr_page = be32_to_cpu(attr->attr_page);
261 oa->attr_id = be32_to_cpu(attr->attr_id);
262
263 /* OSD1: On empty attributes we return a pointer to 2 bytes
264 * of zeros. This keeps similar behaviour with OSD2.
265 * (See below)
266 */
267 oa->val_ptr = likely(oa->len) ? attr->attr_val :
268 (u8 *)&attr->attr_bytes;
269 } else {
270 struct osdv2_attributes_list_element *attr = cur_p;
271
272 if (max_bytes < sizeof(*attr))
273 return -1;
274
275 oa->len = be16_to_cpu(attr->attr_bytes);
276 inc = _osd_req_alist_elem_size(or, oa->len);
277 if (inc > max_bytes)
278 return -1;
279
280 oa->attr_page = be32_to_cpu(attr->attr_page);
281 oa->attr_id = be32_to_cpu(attr->attr_id);
282
e9da4d7f
BH		 283 /* OSD2: For convenience, on empty attributes, we return 8 bytes
284 * of zeros here. This keeps the same behaviour with OSD2r04,
285 * and is nice with null terminating ASCII fields.
286 * oa->val_ptr == NULL marks the end-of-list, or error.
287 */
288 oa->val_ptr = likely(oa->len) ? attr->attr_val : attr->reserved;
71f32e31
BH		 289 }
290 return inc;
291}
292
4ef1a3d7
BH		 293static unsigned _osd_req_alist_size(struct osd_request *or, void *list_head)
294{
c6572c98
BH		 295 return osd_req_is_ver1(or) ?
296 osdv1_list_size(list_head) :
297 osdv2_list_size(list_head);
4ef1a3d7
BH		 298}
299
300static unsigned _osd_req_sizeof_alist_header(struct osd_request *or)
301{
c6572c98
BH		 302 return osd_req_is_ver1(or) ?
303 sizeof(struct osdv1_attributes_list_header) :
304 sizeof(struct osdv2_attributes_list_header);
4ef1a3d7
BH		 305}
306
307static void _osd_req_set_alist_type(struct osd_request *or,
308 void *list, int list_type)
309{
c6572c98
BH		 310 if (osd_req_is_ver1(or)) {
311 struct osdv1_attributes_list_header *attr_list = list;
312
313 memset(attr_list, 0, sizeof(*attr_list));
314 attr_list->type = list_type;
315 } else {
316 struct osdv2_attributes_list_header *attr_list = list;
4ef1a3d7 317
c6572c98
BH		 318 memset(attr_list, 0, sizeof(*attr_list));
319 attr_list->type = list_type;
320 }
4ef1a3d7
BH		 321}
322
323static bool _osd_req_is_alist_type(struct osd_request *or,
324 void *list, int list_type)
325{
326 if (!list)
327 return false;
328
c6572c98 329 if (osd_req_is_ver1(or)) {
4ef1a3d7
BH		 330 struct osdv1_attributes_list_header *attr_list = list;
331
c6572c98
BH		 332 return attr_list->type == list_type;
333 } else {
334 struct osdv2_attributes_list_header *attr_list = list;
335
4ef1a3d7
BH		 336 return attr_list->type == list_type;
337 }
338}
339
3e086130
BH		 340/* This is for List-objects not Attributes-Lists */
341static void _osd_req_encode_olist(struct osd_request *or,
342 struct osd_obj_id_list *list)
343{
344 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
345
c6572c98
BH		 346 if (osd_req_is_ver1(or)) {
347 cdbh->v1.list_identifier = list->list_identifier;
348 cdbh->v1.start_address = list->continuation_id;
349 } else {
350 cdbh->v2.list_identifier = list->list_identifier;
351 cdbh->v2.start_address = list->continuation_id;
352 }
3e086130
BH		 353}
354
4ef1a3d7
BH		 355static osd_cdb_offset osd_req_encode_offset(struct osd_request *or,
356 u64 offset, unsigned *padding)
357{
358 return __osd_encode_offset(offset, padding,
c6572c98
BH		 359 osd_req_is_ver1(or) ?
360 OSDv1_OFFSET_MIN_SHIFT : OSD_OFFSET_MIN_SHIFT,
361 OSD_OFFSET_MAX_SHIFT);
4ef1a3d7
BH		 362}
363
345c435d
BH		 364static struct osd_security_parameters *
365_osd_req_sec_params(struct osd_request *or)
366{
367 struct osd_cdb *ocdb = &or->cdb;
368
c6572c98 369 if (osd_req_is_ver1(or))
f8d3a644 370 return (struct osd_security_parameters *)&ocdb->v1.sec_params;
c6572c98 371 else
f8d3a644 372 return (struct osd_security_parameters *)&ocdb->v2.sec_params;
345c435d
BH		 373}
374
02941a53
BH		 375void osd_dev_init(struct osd_dev *osdd, struct scsi_device *scsi_device)
376{
377 memset(osdd, 0, sizeof(*osdd));
378 osdd->scsi_device = scsi_device;
379 osdd->def_timeout = BLK_DEFAULT_SG_TIMEOUT;
c6572c98
BH		 380#ifdef OSD_VER1_SUPPORT
381 osdd->version = OSD_VER2;
382#endif
02941a53
BH		 383 /* TODO: Allocate pools for osd_request attributes ... */
384}
385EXPORT_SYMBOL(osd_dev_init);
386
387void osd_dev_fini(struct osd_dev *osdd)
388{
389 /* TODO: De-allocate pools */
390
391 osdd->scsi_device = NULL;
392}
393EXPORT_SYMBOL(osd_dev_fini);
394
395static struct osd_request *_osd_request_alloc(gfp_t gfp)
396{
397 struct osd_request *or;
398
399 /* TODO: Use mempool with one saved request */
400 or = kzalloc(sizeof(*or), gfp);
401 return or;
402}
403
404static void _osd_request_free(struct osd_request *or)
405{
406 kfree(or);
407}
408
409struct osd_request *osd_start_request(struct osd_dev *dev, gfp_t gfp)
410{
411 struct osd_request *or;
412
413 or = _osd_request_alloc(gfp);
414 if (!or)
415 return NULL;
416
417 or->osd_dev = dev;
418 or->alloc_flags = gfp;
419 or->timeout = dev->def_timeout;
420 or->retries = OSD_REQ_RETRIES;
421
422 return or;
423}
424EXPORT_SYMBOL(osd_start_request);
425
4ef1a3d7
BH		 426static void _osd_free_seg(struct osd_request *or __unused,
427 struct _osd_req_data_segment *seg)
428{
429 if (!seg->buff || !seg->alloc_size)
430 return;
431
432 kfree(seg->buff);
433 seg->buff = NULL;
434 seg->alloc_size = 0;
435}
436
5d0961fd 437static void _put_request(struct request *rq)
8c0bacca 438{
5d0961fd
BH		 439 /*
440 * If osd_finalize_request() was called but the request was not
441 * executed through the block layer, then we must release BIOs.
442 * TODO: Keep error code in or->async_error. Need to audit all
443 * code paths.
444 */
445 if (unlikely(rq->bio))
446 blk_end_request(rq, -ENOMEM, blk_rq_bytes(rq));
447 else
448 blk_put_request(rq);
8c0bacca
BH		 449}
450
02941a53
BH		 451void osd_end_request(struct osd_request *or)
452{
453 struct request *rq = or->request;
454
455 if (rq) {
456 if (rq->next_rq) {
5d0961fd 457 _put_request(rq->next_rq);
8c0bacca 458 rq->next_rq = NULL;
02941a53
BH		 459 }
460
5d0961fd 461 _put_request(rq);
02941a53 462 }
c4df46c4
BH		 463
464 _osd_free_seg(or, &or->get_attr);
465 _osd_free_seg(or, &or->enc_get_attr);
466 _osd_free_seg(or, &or->set_attr);
467
02941a53
BH		 468 _osd_request_free(or);
469}
470EXPORT_SYMBOL(osd_end_request);
471
5d0961fd
BH		 472static void _set_error_resid(struct osd_request *or, struct request *req,
473 int error)
474{
475 or->async_error = error;
476 or->req_errors = req->errors ? : error;
477 or->sense_len = req->sense_len;
478 if (or->out.req)
479 or->out.residual = or->out.req->resid_len;
480 if (or->in.req)
481 or->in.residual = or->in.req->resid_len;
482}
483
02941a53
BH		 484int osd_execute_request(struct osd_request *or)
485{
5d0961fd
BH		 486 int error = blk_execute_rq(or->request->q, NULL, or->request, 0);
487
488 _set_error_resid(or, or->request, error);
489 return error;
02941a53
BH		 490}
491EXPORT_SYMBOL(osd_execute_request);
492
493static void osd_request_async_done(struct request *req, int error)
494{
495 struct osd_request *or = req->end_io_data;
496
5d0961fd
BH		 497 _set_error_resid(or, req, error);
498 if (req->next_rq) {
499 __blk_put_request(req->q, req->next_rq);
500 req->next_rq = NULL;
aa9fffbe 501 }
02941a53 502
5d0961fd
BH		 503 __blk_put_request(req->q, req);
504 or->request = NULL;
505 or->in.req = NULL;
506 or->out.req = NULL;
507
02941a53
BH		 508 if (or->async_done)
509 or->async_done(or, or->async_private);
510 else
511 osd_end_request(or);
512}
513
514int osd_execute_request_async(struct osd_request *or,
515 osd_req_done_fn *done, void *private)
516{
517 or->request->end_io_data = or;
518 or->async_private = private;
519 or->async_done = done;
520
521 blk_execute_rq_nowait(or->request->q, NULL, or->request, 0,
522 osd_request_async_done);
523 return 0;
524}
525EXPORT_SYMBOL(osd_execute_request_async);
526
4ef1a3d7
BH		 527u8 sg_out_pad_buffer[1 << OSDv1_OFFSET_MIN_SHIFT];
528u8 sg_in_pad_buffer[1 << OSDv1_OFFSET_MIN_SHIFT];
529
530static int _osd_realloc_seg(struct osd_request *or,
531 struct _osd_req_data_segment *seg, unsigned max_bytes)
532{
533 void *buff;
534
535 if (seg->alloc_size >= max_bytes)
536 return 0;
537
538 buff = krealloc(seg->buff, max_bytes, or->alloc_flags);
539 if (!buff) {
540 OSD_ERR("Failed to Realloc %d-bytes was-%d\n", max_bytes,
541 seg->alloc_size);
542 return -ENOMEM;
543 }
544
545 memset(buff + seg->alloc_size, 0, max_bytes - seg->alloc_size);
546 seg->buff = buff;
547 seg->alloc_size = max_bytes;
548 return 0;
549}
550
551static int _alloc_set_attr_list(struct osd_request *or,
552 const struct osd_attr *oa, unsigned nelem, unsigned add_bytes)
553{
554 unsigned total_bytes = add_bytes;
555
556 for (; nelem; --nelem, ++oa)
557 total_bytes += _osd_req_alist_elem_size(or, oa->len);
558
559 OSD_DEBUG("total_bytes=%d\n", total_bytes);
560 return _osd_realloc_seg(or, &or->set_attr, total_bytes);
561}
562
563static int _alloc_get_attr_desc(struct osd_request *or, unsigned max_bytes)
564{
565 OSD_DEBUG("total_bytes=%d\n", max_bytes);
566 return _osd_realloc_seg(or, &or->enc_get_attr, max_bytes);
567}
568
569static int _alloc_get_attr_list(struct osd_request *or)
570{
571 OSD_DEBUG("total_bytes=%d\n", or->get_attr.total_bytes);
572 return _osd_realloc_seg(or, &or->get_attr, or->get_attr.total_bytes);
573}
574
02941a53
BH		 575/*
576 * Common to all OSD commands
577 */
578
579static void _osdv1_req_encode_common(struct osd_request *or,
580 __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len)
581{
582 struct osdv1_cdb *ocdb = &or->cdb.v1;
583
584 /*
585 * For speed, the commands
586 * OSD_ACT_PERFORM_SCSI_COMMAND , V1 0x8F7E, V2 0x8F7C
587 * OSD_ACT_SCSI_TASK_MANAGEMENT , V1 0x8F7F, V2 0x8F7D
588 * are not supported here. Should pass zero and set after the call
589 */
590 act &= cpu_to_be16(~0x0080); /* V1 action code */
591
592 OSD_DEBUG("OSDv1 execute opcode 0x%x\n", be16_to_cpu(act));
593
594 ocdb->h.varlen_cdb.opcode = VARIABLE_LENGTH_CMD;
595 ocdb->h.varlen_cdb.additional_cdb_length = OSD_ADDITIONAL_CDB_LENGTH;
596 ocdb->h.varlen_cdb.service_action = act;
597
598 ocdb->h.partition = cpu_to_be64(obj->partition);
599 ocdb->h.object = cpu_to_be64(obj->id);
600 ocdb->h.v1.length = cpu_to_be64(len);
601 ocdb->h.v1.start_address = cpu_to_be64(offset);
602}
603
c6572c98
BH		 604static void _osdv2_req_encode_common(struct osd_request *or,
605 __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len)
606{
607 struct osdv2_cdb *ocdb = &or->cdb.v2;
608
609 OSD_DEBUG("OSDv2 execute opcode 0x%x\n", be16_to_cpu(act));
610
611 ocdb->h.varlen_cdb.opcode = VARIABLE_LENGTH_CMD;
612 ocdb->h.varlen_cdb.additional_cdb_length = OSD_ADDITIONAL_CDB_LENGTH;
613 ocdb->h.varlen_cdb.service_action = act;
614
615 ocdb->h.partition = cpu_to_be64(obj->partition);
616 ocdb->h.object = cpu_to_be64(obj->id);
617 ocdb->h.v2.length = cpu_to_be64(len);
618 ocdb->h.v2.start_address = cpu_to_be64(offset);
619}
620
02941a53
BH		 621static void _osd_req_encode_common(struct osd_request *or,
622 __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len)
623{
c6572c98
BH		 624 if (osd_req_is_ver1(or))
625 _osdv1_req_encode_common(or, act, obj, offset, len);
626 else
627 _osdv2_req_encode_common(or, act, obj, offset, len);
02941a53
BH		 628}
629
630/*
631 * Device commands
632 */
ae30c994
BH		 633/*TODO: void osd_req_set_master_seed_xchg(struct osd_request *, ...); */
634/*TODO: void osd_req_set_master_key(struct osd_request *, ...); */
635
02941a53
BH		 636void osd_req_format(struct osd_request *or, u64 tot_capacity)
637{
638 _osd_req_encode_common(or, OSD_ACT_FORMAT_OSD, &osd_root_object, 0,
639 tot_capacity);
640}
641EXPORT_SYMBOL(osd_req_format);
642
3e086130
BH		 643int osd_req_list_dev_partitions(struct osd_request *or,
644 osd_id initial_id, struct osd_obj_id_list *list, unsigned nelem)
645{
646 return osd_req_list_partition_objects(or, 0, initial_id, list, nelem);
647}
648EXPORT_SYMBOL(osd_req_list_dev_partitions);
649
650static void _osd_req_encode_flush(struct osd_request *or,
651 enum osd_options_flush_scope_values op)
652{
653 struct osd_cdb_head *ocdb = osd_cdb_head(&or->cdb);
654
655 ocdb->command_specific_options = op;
656}
657
658void osd_req_flush_obsd(struct osd_request *or,
659 enum osd_options_flush_scope_values op)
660{
661 _osd_req_encode_common(or, OSD_ACT_FLUSH_OSD, &osd_root_object, 0, 0);
662 _osd_req_encode_flush(or, op);
663}
664EXPORT_SYMBOL(osd_req_flush_obsd);
665
ae30c994
BH		 666/*TODO: void osd_req_perform_scsi_command(struct osd_request *,
667 const u8 *cdb, ...); */
668/*TODO: void osd_req_task_management(struct osd_request *, ...); */
669
02941a53
BH		 670/*
671 * Partition commands
672 */
673static void _osd_req_encode_partition(struct osd_request *or,
674 __be16 act, osd_id partition)
675{
676 struct osd_obj_id par = {
677 .partition = partition,
678 .id = 0,
679 };
680
681 _osd_req_encode_common(or, act, &par, 0, 0);
682}
683
684void osd_req_create_partition(struct osd_request *or, osd_id partition)
685{
686 _osd_req_encode_partition(or, OSD_ACT_CREATE_PARTITION, partition);
687}
688EXPORT_SYMBOL(osd_req_create_partition);
689
690void osd_req_remove_partition(struct osd_request *or, osd_id partition)
691{
692 _osd_req_encode_partition(or, OSD_ACT_REMOVE_PARTITION, partition);
693}
694EXPORT_SYMBOL(osd_req_remove_partition);
695
ae30c994
BH		 696/*TODO: void osd_req_set_partition_key(struct osd_request *,
697 osd_id partition, u8 new_key_id[OSD_CRYPTO_KEYID_SIZE],
698 u8 seed[OSD_CRYPTO_SEED_SIZE]); */
699
3e086130
BH		 700static int _osd_req_list_objects(struct osd_request *or,
701 __be16 action, const struct osd_obj_id *obj, osd_id initial_id,
702 struct osd_obj_id_list *list, unsigned nelem)
703{
fc2fac5b 704 struct request_queue *q = osd_request_queue(or->osd_dev);
3e086130
BH		 705 u64 len = nelem * sizeof(osd_id) + sizeof(*list);
706 struct bio *bio;
707
708 _osd_req_encode_common(or, action, obj, (u64)initial_id, len);
709
710 if (list->list_identifier)
711 _osd_req_encode_olist(or, list);
712
713 WARN_ON(or->in.bio);
714 bio = bio_map_kern(q, list, len, or->alloc_flags);
bf5e84f6 715 if (IS_ERR(bio)) {
3e086130 716 OSD_ERR("!!! Failed to allocate list_objects BIO\n");
bf5e84f6 717 return PTR_ERR(bio);
3e086130
BH		 718 }
719
7b6d91da 720 bio->bi_rw &= ~REQ_WRITE;
3e086130
BH		 721 or->in.bio = bio;
722 or->in.total_bytes = bio->bi_size;
723 return 0;
724}
725
726int osd_req_list_partition_collections(struct osd_request *or,
727 osd_id partition, osd_id initial_id, struct osd_obj_id_list *list,
728 unsigned nelem)
729{
730 struct osd_obj_id par = {
731 .partition = partition,
732 .id = 0,
733 };
734
735 return osd_req_list_collection_objects(or, &par, initial_id, list,
736 nelem);
737}
738EXPORT_SYMBOL(osd_req_list_partition_collections);
739
740int osd_req_list_partition_objects(struct osd_request *or,
741 osd_id partition, osd_id initial_id, struct osd_obj_id_list *list,
742 unsigned nelem)
743{
744 struct osd_obj_id par = {
745 .partition = partition,
746 .id = 0,
747 };
748
749 return _osd_req_list_objects(or, OSD_ACT_LIST, &par, initial_id, list,
750 nelem);
751}
752EXPORT_SYMBOL(osd_req_list_partition_objects);
753
754void osd_req_flush_partition(struct osd_request *or,
755 osd_id partition, enum osd_options_flush_scope_values op)
756{
757 _osd_req_encode_partition(or, OSD_ACT_FLUSH_PARTITION, partition);
758 _osd_req_encode_flush(or, op);
759}
760EXPORT_SYMBOL(osd_req_flush_partition);
761
762/*
763 * Collection commands
764 */
ae30c994
BH		 765/*TODO: void osd_req_create_collection(struct osd_request *,
766 const struct osd_obj_id *); */
767/*TODO: void osd_req_remove_collection(struct osd_request *,
768 const struct osd_obj_id *); */
769
3e086130
BH		 770int osd_req_list_collection_objects(struct osd_request *or,
771 const struct osd_obj_id *obj, osd_id initial_id,
772 struct osd_obj_id_list *list, unsigned nelem)
773{
774 return _osd_req_list_objects(or, OSD_ACT_LIST_COLLECTION, obj,
775 initial_id, list, nelem);
776}
777EXPORT_SYMBOL(osd_req_list_collection_objects);
778
ae30c994
BH		 779/*TODO: void query(struct osd_request *, ...); V2 */
780
3e086130
BH		 781void osd_req_flush_collection(struct osd_request *or,
782 const struct osd_obj_id *obj, enum osd_options_flush_scope_values op)
783{
784 _osd_req_encode_common(or, OSD_ACT_FLUSH_PARTITION, obj, 0, 0);
785 _osd_req_encode_flush(or, op);
786}
787EXPORT_SYMBOL(osd_req_flush_collection);
788
ae30c994
BH		 789/*TODO: void get_member_attrs(struct osd_request *, ...); V2 */
790/*TODO: void set_member_attrs(struct osd_request *, ...); V2 */
791
02941a53
BH		 792/*
793 * Object commands
794 */
795void osd_req_create_object(struct osd_request *or, struct osd_obj_id *obj)
796{
797 _osd_req_encode_common(or, OSD_ACT_CREATE, obj, 0, 0);
798}
799EXPORT_SYMBOL(osd_req_create_object);
800
801void osd_req_remove_object(struct osd_request *or, struct osd_obj_id *obj)
802{
803 _osd_req_encode_common(or, OSD_ACT_REMOVE, obj, 0, 0);
804}
805EXPORT_SYMBOL(osd_req_remove_object);
806
ae30c994
BH		 807
808/*TODO: void osd_req_create_multi(struct osd_request *or,
809 struct osd_obj_id *first, struct osd_obj_id_list *list, unsigned nelem);
810*/
811
02941a53 812void osd_req_write(struct osd_request *or,
62f469b5
BH		 813 const struct osd_obj_id *obj, u64 offset,
814 struct bio *bio, u64 len)
02941a53 815{
62f469b5 816 _osd_req_encode_common(or, OSD_ACT_WRITE, obj, offset, len);
02941a53 817 WARN_ON(or->out.bio || or->out.total_bytes);
7b6d91da 818 WARN_ON(0 == (bio->bi_rw & REQ_WRITE));
02941a53 819 or->out.bio = bio;
62f469b5 820 or->out.total_bytes = len;
02941a53
BH		 821}
822EXPORT_SYMBOL(osd_req_write);
823
0e35afbc
BH		 824int osd_req_write_kern(struct osd_request *or,
825 const struct osd_obj_id *obj, u64 offset, void* buff, u64 len)
826{
fc2fac5b 827 struct request_queue *req_q = osd_request_queue(or->osd_dev);
0e35afbc
BH		 828 struct bio *bio = bio_map_kern(req_q, buff, len, GFP_KERNEL);
829
830 if (IS_ERR(bio))
831 return PTR_ERR(bio);
832
7b6d91da 833 bio->bi_rw |= REQ_WRITE; /* FIXME: bio_set_dir() */
62f469b5 834 osd_req_write(or, obj, offset, bio, len);
0e35afbc
BH		 835 return 0;
836}
837EXPORT_SYMBOL(osd_req_write_kern);
838
ae30c994
BH		 839/*TODO: void osd_req_append(struct osd_request *,
840 const struct osd_obj_id *, struct bio *data_out); */
841/*TODO: void osd_req_create_write(struct osd_request *,
842 const struct osd_obj_id *, struct bio *data_out, u64 offset); */
843/*TODO: void osd_req_clear(struct osd_request *,
844 const struct osd_obj_id *, u64 offset, u64 len); */
845/*TODO: void osd_req_punch(struct osd_request *,
846 const struct osd_obj_id *, u64 offset, u64 len); V2 */
847
3e086130
BH		 848void osd_req_flush_object(struct osd_request *or,
849 const struct osd_obj_id *obj, enum osd_options_flush_scope_values op,
850 /*V2*/ u64 offset, /*V2*/ u64 len)
851{
c6572c98
BH		 852 if (unlikely(osd_req_is_ver1(or) && (offset || len))) {
853 OSD_DEBUG("OSD Ver1 flush on specific range ignored\n");
854 offset = 0;
855 len = 0;
856 }
857
3e086130
BH		 858 _osd_req_encode_common(or, OSD_ACT_FLUSH, obj, offset, len);
859 _osd_req_encode_flush(or, op);
860}
861EXPORT_SYMBOL(osd_req_flush_object);
862
02941a53 863void osd_req_read(struct osd_request *or,
62f469b5
BH		 864 const struct osd_obj_id *obj, u64 offset,
865 struct bio *bio, u64 len)
02941a53 866{
62f469b5 867 _osd_req_encode_common(or, OSD_ACT_READ, obj, offset, len);
02941a53 868 WARN_ON(or->in.bio || or->in.total_bytes);
d842a93c 869 WARN_ON(bio->bi_rw & REQ_WRITE);
02941a53 870 or->in.bio = bio;
62f469b5 871 or->in.total_bytes = len;
02941a53
BH		 872}
873EXPORT_SYMBOL(osd_req_read);
874
0e35afbc
BH		 875int osd_req_read_kern(struct osd_request *or,
876 const struct osd_obj_id *obj, u64 offset, void* buff, u64 len)
877{
fc2fac5b 878 struct request_queue *req_q = osd_request_queue(or->osd_dev);
0e35afbc
BH		 879 struct bio *bio = bio_map_kern(req_q, buff, len, GFP_KERNEL);
880
881 if (IS_ERR(bio))
882 return PTR_ERR(bio);
883
62f469b5 884 osd_req_read(or, obj, offset, bio, len);
0e35afbc
BH		 885 return 0;
886}
887EXPORT_SYMBOL(osd_req_read_kern);
888
4ef1a3d7
BH		 889void osd_req_get_attributes(struct osd_request *or,
890 const struct osd_obj_id *obj)
891{
892 _osd_req_encode_common(or, OSD_ACT_GET_ATTRIBUTES, obj, 0, 0);
893}
894EXPORT_SYMBOL(osd_req_get_attributes);
895
896void osd_req_set_attributes(struct osd_request *or,
897 const struct osd_obj_id *obj)
898{
899 _osd_req_encode_common(or, OSD_ACT_SET_ATTRIBUTES, obj, 0, 0);
900}
901EXPORT_SYMBOL(osd_req_set_attributes);
902
903/*
904 * Attributes List-mode
905 */
906
907int osd_req_add_set_attr_list(struct osd_request *or,
908 const struct osd_attr *oa, unsigned nelem)
909{
910 unsigned total_bytes = or->set_attr.total_bytes;
911 void *attr_last;
912 int ret;
913
914 if (or->attributes_mode &&
915 or->attributes_mode != OSD_CDB_GET_SET_ATTR_LISTS) {
916 WARN_ON(1);
917 return -EINVAL;
918 }
919 or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS;
920
921 if (!total_bytes) { /* first-time: allocate and put list header */
922 total_bytes = _osd_req_sizeof_alist_header(or);
923 ret = _alloc_set_attr_list(or, oa, nelem, total_bytes);
924 if (ret)
925 return ret;
926 _osd_req_set_alist_type(or, or->set_attr.buff,
927 OSD_ATTR_LIST_SET_RETRIEVE);
928 }
929 attr_last = or->set_attr.buff + total_bytes;
930
931 for (; nelem; --nelem) {
4ef1a3d7
BH		 932 unsigned elem_size = _osd_req_alist_elem_size(or, oa->len);
933
934 total_bytes += elem_size;
935 if (unlikely(or->set_attr.alloc_size < total_bytes)) {
936 or->set_attr.total_bytes = total_bytes - elem_size;
937 ret = _alloc_set_attr_list(or, oa, nelem, total_bytes);
938 if (ret)
939 return ret;
940 attr_last =
941 or->set_attr.buff + or->set_attr.total_bytes;
942 }
943
71f32e31 944 _osd_req_alist_elem_encode(or, attr_last, oa);
4ef1a3d7
BH		 945
946 attr_last += elem_size;
947 ++oa;
948 }
949
950 or->set_attr.total_bytes = total_bytes;
951 return 0;
952}
953EXPORT_SYMBOL(osd_req_add_set_attr_list);
954
4ef1a3d7
BH		 955static int _req_append_segment(struct osd_request *or,
956 unsigned padding, struct _osd_req_data_segment *seg,
957 struct _osd_req_data_segment *last_seg, struct _osd_io_info *io)
958{
959 void *pad_buff;
960 int ret;
961
962 if (padding) {
963 /* check if we can just add it to last buffer */
964 if (last_seg &&
965 (padding <= last_seg->alloc_size - last_seg->total_bytes))
966 pad_buff = last_seg->buff + last_seg->total_bytes;
967 else
968 pad_buff = io->pad_buff;
969
bc38bf10 970 ret = blk_rq_map_kern(io->req->q, io->req, pad_buff, padding,
4ef1a3d7
BH		 971 or->alloc_flags);
972 if (ret)
973 return ret;
974 io->total_bytes += padding;
975 }
976
bc38bf10 977 ret = blk_rq_map_kern(io->req->q, io->req, seg->buff, seg->total_bytes,
4ef1a3d7
BH		 978 or->alloc_flags);
979 if (ret)
980 return ret;
981
982 io->total_bytes += seg->total_bytes;
983 OSD_DEBUG("padding=%d buff=%p total_bytes=%d\n", padding, seg->buff,
984 seg->total_bytes);
985 return 0;
986}
987
988static int _osd_req_finalize_set_attr_list(struct osd_request *or)
989{
990 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
991 unsigned padding;
992 int ret;
993
994 if (!or->set_attr.total_bytes) {
995 cdbh->attrs_list.set_attr_offset = OSD_OFFSET_UNUSED;
996 return 0;
997 }
998
999 cdbh->attrs_list.set_attr_bytes = cpu_to_be32(or->set_attr.total_bytes);
1000 cdbh->attrs_list.set_attr_offset =
1001 osd_req_encode_offset(or, or->out.total_bytes, &padding);
1002
1003 ret = _req_append_segment(or, padding, &or->set_attr,
1004 or->out.last_seg, &or->out);
1005 if (ret)
1006 return ret;
1007
1008 or->out.last_seg = &or->set_attr;
1009 return 0;
1010}
1011
1012int osd_req_add_get_attr_list(struct osd_request *or,
1013 const struct osd_attr *oa, unsigned nelem)
1014{
1015 unsigned total_bytes = or->enc_get_attr.total_bytes;
1016 void *attr_last;
1017 int ret;
1018
1019 if (or->attributes_mode &&
1020 or->attributes_mode != OSD_CDB_GET_SET_ATTR_LISTS) {
1021 WARN_ON(1);
1022 return -EINVAL;
1023 }
1024 or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS;
1025
1026 /* first time calc data-in list header size */
1027 if (!or->get_attr.total_bytes)
1028 or->get_attr.total_bytes = _osd_req_sizeof_alist_header(or);
1029
1030 /* calc data-out info */
1031 if (!total_bytes) { /* first-time: allocate and put list header */
1032 unsigned max_bytes;
1033
1034 total_bytes = _osd_req_sizeof_alist_header(or);
1035 max_bytes = total_bytes +
1036 nelem * sizeof(struct osd_attributes_list_attrid);
1037 ret = _alloc_get_attr_desc(or, max_bytes);
1038 if (ret)
1039 return ret;
1040
1041 _osd_req_set_alist_type(or, or->enc_get_attr.buff,
1042 OSD_ATTR_LIST_GET);
1043 }
1044 attr_last = or->enc_get_attr.buff + total_bytes;
1045
1046 for (; nelem; --nelem) {
1047 struct osd_attributes_list_attrid *attrid;
1048 const unsigned cur_size = sizeof(*attrid);
1049
1050 total_bytes += cur_size;
1051 if (unlikely(or->enc_get_attr.alloc_size < total_bytes)) {
1052 or->enc_get_attr.total_bytes = total_bytes - cur_size;
1053 ret = _alloc_get_attr_desc(or,
1054 total_bytes + nelem * sizeof(*attrid));
1055 if (ret)
1056 return ret;
1057 attr_last = or->enc_get_attr.buff +
1058 or->enc_get_attr.total_bytes;
1059 }
1060
1061 attrid = attr_last;
1062 attrid->attr_page = cpu_to_be32(oa->attr_page);
1063 attrid->attr_id = cpu_to_be32(oa->attr_id);
1064
1065 attr_last += cur_size;
1066
1067 /* calc data-in size */
1068 or->get_attr.total_bytes +=
1069 _osd_req_alist_elem_size(or, oa->len);
1070 ++oa;
1071 }
1072
1073 or->enc_get_attr.total_bytes = total_bytes;
1074
1075 OSD_DEBUG(
1076 "get_attr.total_bytes=%u(%u) enc_get_attr.total_bytes=%u(%Zu)\n",
1077 or->get_attr.total_bytes,
1078 or->get_attr.total_bytes - _osd_req_sizeof_alist_header(or),
1079 or->enc_get_attr.total_bytes,
1080 (or->enc_get_attr.total_bytes - _osd_req_sizeof_alist_header(or))
1081 / sizeof(struct osd_attributes_list_attrid));
1082
1083 return 0;
1084}
1085EXPORT_SYMBOL(osd_req_add_get_attr_list);
1086
1087static int _osd_req_finalize_get_attr_list(struct osd_request *or)
1088{
1089 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
1090 unsigned out_padding;
1091 unsigned in_padding;
1092 int ret;
1093
1094 if (!or->enc_get_attr.total_bytes) {
1095 cdbh->attrs_list.get_attr_desc_offset = OSD_OFFSET_UNUSED;
1096 cdbh->attrs_list.get_attr_offset = OSD_OFFSET_UNUSED;
1097 return 0;
1098 }
1099
1100 ret = _alloc_get_attr_list(or);
1101 if (ret)
1102 return ret;
1103
1104 /* The out-going buffer info update */
1105 OSD_DEBUG("out-going\n");
1106 cdbh->attrs_list.get_attr_desc_bytes =
1107 cpu_to_be32(or->enc_get_attr.total_bytes);
1108
1109 cdbh->attrs_list.get_attr_desc_offset =
1110 osd_req_encode_offset(or, or->out.total_bytes, &out_padding);
1111
1112 ret = _req_append_segment(or, out_padding, &or->enc_get_attr,
1113 or->out.last_seg, &or->out);
1114 if (ret)
1115 return ret;
1116 or->out.last_seg = &or->enc_get_attr;
1117
1118 /* The incoming buffer info update */
1119 OSD_DEBUG("in-coming\n");
1120 cdbh->attrs_list.get_attr_alloc_length =
1121 cpu_to_be32(or->get_attr.total_bytes);
1122
1123 cdbh->attrs_list.get_attr_offset =
1124 osd_req_encode_offset(or, or->in.total_bytes, &in_padding);
1125
1126 ret = _req_append_segment(or, in_padding, &or->get_attr, NULL,
1127 &or->in);
1128 if (ret)
1129 return ret;
1130 or->in.last_seg = &or->get_attr;
1131
1132 return 0;
1133}
1134
1135int osd_req_decode_get_attr_list(struct osd_request *or,
1136 struct osd_attr *oa, int *nelem, void **iterator)
1137{
1138 unsigned cur_bytes, returned_bytes;
1139 int n;
1140 const unsigned sizeof_attr_list = _osd_req_sizeof_alist_header(or);
1141 void *cur_p;
1142
1143 if (!_osd_req_is_alist_type(or, or->get_attr.buff,
1144 OSD_ATTR_LIST_SET_RETRIEVE)) {
1145 oa->attr_page = 0;
1146 oa->attr_id = 0;
1147 oa->val_ptr = NULL;
1148 oa->len = 0;
1149 *iterator = NULL;
1150 return 0;
1151 }
1152
1153 if (*iterator) {
1154 BUG_ON((*iterator < or->get_attr.buff) ||
1155 (or->get_attr.buff + or->get_attr.alloc_size < *iterator));
1156 cur_p = *iterator;
1157 cur_bytes = (*iterator - or->get_attr.buff) - sizeof_attr_list;
1158 returned_bytes = or->get_attr.total_bytes;
1159 } else { /* first time decode the list header */
1160 cur_bytes = sizeof_attr_list;
1161 returned_bytes = _osd_req_alist_size(or, or->get_attr.buff) +
1162 sizeof_attr_list;
1163
1164 cur_p = or->get_attr.buff + sizeof_attr_list;
1165
1166 if (returned_bytes > or->get_attr.alloc_size) {
1167 OSD_DEBUG("target report: space was not big enough! "
1168 "Allocate=%u Needed=%u\n",
1169 or->get_attr.alloc_size,
1170 returned_bytes + sizeof_attr_list);
1171
1172 returned_bytes =
1173 or->get_attr.alloc_size - sizeof_attr_list;
1174 }
1175 or->get_attr.total_bytes = returned_bytes;
1176 }
1177
1178 for (n = 0; (n < *nelem) && (cur_bytes < returned_bytes); ++n) {
71f32e31
BH		 1179 int inc = _osd_req_alist_elem_decode(or, cur_p, oa,
1180 returned_bytes - cur_bytes);
4ef1a3d7 1181
71f32e31 1182 if (inc < 0) {
4ef1a3d7
BH		 1183 OSD_ERR("BAD FOOD from target. list not valid!"
1184 "c=%d r=%d n=%d\n",
1185 cur_bytes, returned_bytes, n);
1186 oa->val_ptr = NULL;
eff21490 1187 cur_bytes = returned_bytes; /* break the caller loop */
4ef1a3d7
BH		 1188 break;
1189 }
1190
71f32e31 1191 cur_bytes += inc;
4ef1a3d7
BH		 1192 cur_p += inc;
1193 ++oa;
1194 }
1195
1196 *iterator = (returned_bytes - cur_bytes) ? cur_p : NULL;
1197 *nelem = n;
1198 return returned_bytes - cur_bytes;
1199}
1200EXPORT_SYMBOL(osd_req_decode_get_attr_list);
1201
1202/*
1203 * Attributes Page-mode
1204 */
1205
1206int osd_req_add_get_attr_page(struct osd_request *or,
1207 u32 page_id, void *attar_page, unsigned max_page_len,
1208 const struct osd_attr *set_one_attr)
1209{
1210 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
1211
1212 if (or->attributes_mode &&
1213 or->attributes_mode != OSD_CDB_GET_ATTR_PAGE_SET_ONE) {
1214 WARN_ON(1);
1215 return -EINVAL;
1216 }
1217 or->attributes_mode = OSD_CDB_GET_ATTR_PAGE_SET_ONE;
1218
1219 or->get_attr.buff = attar_page;
1220 or->get_attr.total_bytes = max_page_len;
1221
4ef1a3d7
BH		 1222 cdbh->attrs_page.get_attr_page = cpu_to_be32(page_id);
1223 cdbh->attrs_page.get_attr_alloc_length = cpu_to_be32(max_page_len);
ec6a0a41
BH		 1224
1225 if (!set_one_attr || !set_one_attr->attr_page)
1226 return 0; /* The set is optional */
1227
1228 or->set_attr.buff = set_one_attr->val_ptr;
1229 or->set_attr.total_bytes = set_one_attr->len;
4ef1a3d7
BH		 1230
1231 cdbh->attrs_page.set_attr_page = cpu_to_be32(set_one_attr->attr_page);
1232 cdbh->attrs_page.set_attr_id = cpu_to_be32(set_one_attr->attr_id);
1233 cdbh->attrs_page.set_attr_length = cpu_to_be32(set_one_attr->len);
4ef1a3d7
BH		 1234 return 0;
1235}
1236EXPORT_SYMBOL(osd_req_add_get_attr_page);
1237
1238static int _osd_req_finalize_attr_page(struct osd_request *or)
1239{
1240 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
1241 unsigned in_padding, out_padding;
1242 int ret;
1243
1244 /* returned page */
1245 cdbh->attrs_page.get_attr_offset =
1246 osd_req_encode_offset(or, or->in.total_bytes, &in_padding);
1247
1248 ret = _req_append_segment(or, in_padding, &or->get_attr, NULL,
1249 &or->in);
1250 if (ret)
1251 return ret;
1252
ec6a0a41
BH		 1253 if (or->set_attr.total_bytes == 0)
1254 return 0;
1255
4ef1a3d7
BH		 1256 /* set one value */
1257 cdbh->attrs_page.set_attr_offset =
1258 osd_req_encode_offset(or, or->out.total_bytes, &out_padding);
1259
ec6a0a41 1260 ret = _req_append_segment(or, out_padding, &or->set_attr, NULL,
4ef1a3d7
BH		 1261 &or->out);
1262 return ret;
1263}
1264
f8d3a644
BH		 1265static inline void osd_sec_parms_set_out_offset(bool is_v1,
1266 struct osd_security_parameters *sec_parms, osd_cdb_offset offset)
1267{
1268 if (is_v1)
1269 sec_parms->v1.data_out_integrity_check_offset = offset;
1270 else
1271 sec_parms->v2.data_out_integrity_check_offset = offset;
1272}
1273
1274static inline void osd_sec_parms_set_in_offset(bool is_v1,
1275 struct osd_security_parameters *sec_parms, osd_cdb_offset offset)
1276{
1277 if (is_v1)
1278 sec_parms->v1.data_in_integrity_check_offset = offset;
1279 else
1280 sec_parms->v2.data_in_integrity_check_offset = offset;
1281}
1282
345c435d 1283static int _osd_req_finalize_data_integrity(struct osd_request *or,
546881ae 1284 bool has_in, bool has_out, u64 out_data_bytes, const u8 *cap_key)
345c435d
BH		 1285{
1286 struct osd_security_parameters *sec_parms = _osd_req_sec_params(or);
1287 int ret;
1288
1289 if (!osd_is_sec_alldata(sec_parms))
1290 return 0;
1291
1292 if (has_out) {
1293 struct _osd_req_data_segment seg = {
1294 .buff = &or->out_data_integ,
1295 .total_bytes = sizeof(or->out_data_integ),
1296 };
1297 unsigned pad;
1298
546881ae 1299 or->out_data_integ.data_bytes = cpu_to_be64(out_data_bytes);
345c435d
BH		 1300 or->out_data_integ.set_attributes_bytes = cpu_to_be64(
1301 or->set_attr.total_bytes);
1302 or->out_data_integ.get_attributes_bytes = cpu_to_be64(
1303 or->enc_get_attr.total_bytes);
1304
f8d3a644
BH		 1305 osd_sec_parms_set_out_offset(osd_req_is_ver1(or), sec_parms,
1306 osd_req_encode_offset(or, or->out.total_bytes, &pad));
345c435d
BH		 1307
1308 ret = _req_append_segment(or, pad, &seg, or->out.last_seg,
1309 &or->out);
1310 if (ret)
1311 return ret;
1312 or->out.last_seg = NULL;
1313
1314 /* they are now all chained to request sign them all together */
1315 osd_sec_sign_data(&or->out_data_integ, or->out.req->bio,
1316 cap_key);
1317 }
1318
1319 if (has_in) {
1320 struct _osd_req_data_segment seg = {
1321 .buff = &or->in_data_integ,
1322 .total_bytes = sizeof(or->in_data_integ),
1323 };
1324 unsigned pad;
1325
f8d3a644
BH		 1326 osd_sec_parms_set_in_offset(osd_req_is_ver1(or), sec_parms,
1327 osd_req_encode_offset(or, or->in.total_bytes, &pad));
345c435d
BH		 1328
1329 ret = _req_append_segment(or, pad, &seg, or->in.last_seg,
1330 &or->in);
1331 if (ret)
1332 return ret;
1333
1334 or->in.last_seg = NULL;
1335 }
1336
1337 return 0;
1338}
1339
02941a53
BH		 1340/*
1341 * osd_finalize_request and helpers
1342 */
c29b70f6
BH		 1343static struct request *_make_request(struct request_queue *q, bool has_write,
1344 struct _osd_io_info *oii, gfp_t flags)
1345{
1346 if (oii->bio)
1347 return blk_make_request(q, oii->bio, flags);
1348 else {
1349 struct request *req;
1350
1351 req = blk_get_request(q, has_write ? WRITE : READ, flags);
1352 if (unlikely(!req))
1353 return ERR_PTR(-ENOMEM);
1354
1355 return req;
1356 }
1357}
02941a53
BH		 1358
1359static int _init_blk_request(struct osd_request *or,
1360 bool has_in, bool has_out)
1361{
1362 gfp_t flags = or->alloc_flags;
1363 struct scsi_device *scsi_device = or->osd_dev->scsi_device;
1364 struct request_queue *q = scsi_device->request_queue;
1365 struct request *req;
c29b70f6 1366 int ret;
02941a53 1367
c29b70f6
BH		 1368 req = _make_request(q, has_out, has_out ? &or->out : &or->in, flags);
1369 if (IS_ERR(req)) {
1370 ret = PTR_ERR(req);
02941a53 1371 goto out;
c29b70f6 1372 }
02941a53
BH		 1373
1374 or->request = req;
1375 req->cmd_type = REQ_TYPE_BLOCK_PC;
03306793
BH		 1376 req->cmd_flags |= REQ_QUIET;
1377
02941a53
BH		 1378 req->timeout = or->timeout;
1379 req->retries = or->retries;
1380 req->sense = or->sense;
1381 req->sense_len = 0;
1382
1383 if (has_out) {
1384 or->out.req = req;
1385 if (has_in) {
1386 /* allocate bidi request */
c29b70f6
BH		 1387 req = _make_request(q, false, &or->in, flags);
1388 if (IS_ERR(req)) {
02941a53 1389 OSD_DEBUG("blk_get_request for bidi failed\n");
c29b70f6 1390 ret = PTR_ERR(req);
02941a53
BH		 1391 goto out;
1392 }
1393 req->cmd_type = REQ_TYPE_BLOCK_PC;
1394 or->in.req = or->request->next_rq = req;
1395 }
1396 } else if (has_in)
1397 or->in.req = req;
1398
1399 ret = 0;
1400out:
1401 OSD_DEBUG("or=%p has_in=%d has_out=%d => %d, %p\n",
1402 or, has_in, has_out, ret, or->request);
1403 return ret;
1404}
1405
1406int osd_finalize_request(struct osd_request *or,
1407 u8 options, const void *cap, const u8 *cap_key)
1408{
1409 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
1410 bool has_in, has_out;
546881ae 1411 u64 out_data_bytes = or->out.total_bytes;
02941a53
BH		 1412 int ret;
1413
1414 if (options & OSD_REQ_FUA)
1415 cdbh->options |= OSD_CDB_FUA;
1416
1417 if (options & OSD_REQ_DPO)
1418 cdbh->options |= OSD_CDB_DPO;
1419
1420 if (options & OSD_REQ_BYPASS_TIMESTAMPS)
1421 cdbh->timestamp_control = OSD_CDB_BYPASS_TIMESTAMPS;
1422
1423 osd_set_caps(&or->cdb, cap);
1424
1425 has_in = or->in.bio || or->get_attr.total_bytes;
1426 has_out = or->out.bio || or->set_attr.total_bytes ||
1427 or->enc_get_attr.total_bytes;
1428
1429 ret = _init_blk_request(or, has_in, has_out);
1430 if (ret) {
1431 OSD_DEBUG("_init_blk_request failed\n");
1432 return ret;
1433 }
1434
4ef1a3d7
BH		 1435 or->out.pad_buff = sg_out_pad_buffer;
1436 or->in.pad_buff = sg_in_pad_buffer;
1437
02941a53
BH		 1438 if (!or->attributes_mode)
1439 or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS;
1440 cdbh->command_specific_options |= or->attributes_mode;
4ef1a3d7
BH		 1441 if (or->attributes_mode == OSD_CDB_GET_ATTR_PAGE_SET_ONE) {
1442 ret = _osd_req_finalize_attr_page(or);
98e1e0f0
BH		 1443 if (ret) {
1444 OSD_DEBUG("_osd_req_finalize_attr_page failed\n");
1445 return ret;
1446 }
4ef1a3d7
BH		 1447 } else {
1448 /* TODO: I think that for the GET_ATTR command these 2 should
1449 * be reversed to keep them in execution order (for embeded
1450 * targets with low memory footprint)
1451 */
1452 ret = _osd_req_finalize_set_attr_list(or);
1453 if (ret) {
1454 OSD_DEBUG("_osd_req_finalize_set_attr_list failed\n");
1455 return ret;
1456 }
1457
1458 ret = _osd_req_finalize_get_attr_list(or);
1459 if (ret) {
1460 OSD_DEBUG("_osd_req_finalize_get_attr_list failed\n");
1461 return ret;
1462 }
1463 }
02941a53 1464
546881ae
BH		 1465 ret = _osd_req_finalize_data_integrity(or, has_in, has_out,
1466 out_data_bytes, cap_key);
345c435d
BH		 1467 if (ret)
1468 return ret;
1469
1470 osd_sec_sign_cdb(&or->cdb, cap_key);
1471
02941a53
BH		 1472 or->request->cmd = or->cdb.buff;
1473 or->request->cmd_len = _osd_req_cdb_len(or);
1474
1475 return 0;
1476}
1477EXPORT_SYMBOL(osd_finalize_request);
1478
aa9fffbe
BH		 1479static bool _is_osd_security_code(int code)
1480{
1481 return (code == osd_security_audit_value_frozen) ||
1482 (code == osd_security_working_key_frozen) ||
1483 (code == osd_nonce_not_unique) ||
1484 (code == osd_nonce_timestamp_out_of_range) ||
1485 (code == osd_invalid_dataout_buffer_integrity_check_value);
1486}
1487
98f3aea2
BH		 1488#define OSD_SENSE_PRINT1(fmt, a...) \
1489 do { \
1490 if (__cur_sense_need_output) \
1491 OSD_ERR(fmt, ##a); \
1492 } while (0)
1493
1494#define OSD_SENSE_PRINT2(fmt, a...) OSD_SENSE_PRINT1(" " fmt, ##a)
1495
1496int osd_req_decode_sense_full(struct osd_request *or,
1497 struct osd_sense_info *osi, bool silent,
1498 struct osd_obj_id *bad_obj_list __unused, int max_obj __unused,
1499 struct osd_attr *bad_attr_list, int max_attr)
1500{
1501 int sense_len, original_sense_len;
1502 struct osd_sense_info local_osi;
1503 struct scsi_sense_descriptor_based *ssdb;
1504 void *cur_descriptor;
1505#if (CONFIG_SCSI_OSD_DPRINT_SENSE == 0)
1506 const bool __cur_sense_need_output = false;
1507#else
1508 bool __cur_sense_need_output = !silent;
1509#endif
aa9fffbe 1510 int ret;
98f3aea2 1511
5d0961fd 1512 if (likely(!or->req_errors))
98f3aea2 1513 return 0;
aa9fffbe
BH		 1514
1515 osi = osi ? : &local_osi;
1516 memset(osi, 0, sizeof(*osi));
98f3aea2 1517
5d0961fd
BH		 1518 ssdb = (typeof(ssdb))or->sense;
1519 sense_len = or->sense_len;
98f3aea2
BH		 1520 if ((sense_len < (int)sizeof(*ssdb) || !ssdb->sense_key)) {
1521 OSD_ERR("Block-layer returned error(0x%x) but "
1522 "sense_len(%u) || key(%d) is empty\n",
5d0961fd 1523 or->req_errors, sense_len, ssdb->sense_key);
aa9fffbe 1524 goto analyze;
98f3aea2
BH		 1525 }
1526
1527 if ((ssdb->response_code != 0x72) && (ssdb->response_code != 0x73)) {
1528 OSD_ERR("Unrecognized scsi sense: rcode=%x length=%d\n",
1529 ssdb->response_code, sense_len);
aa9fffbe 1530 goto analyze;
98f3aea2
BH		 1531 }
1532
98f3aea2
BH		 1533 osi->key = ssdb->sense_key;
1534 osi->additional_code = be16_to_cpu(ssdb->additional_sense_code);
1535 original_sense_len = ssdb->additional_sense_length + 8;
1536
1537#if (CONFIG_SCSI_OSD_DPRINT_SENSE == 1)
1538 if (__cur_sense_need_output)
1539 __cur_sense_need_output = (osi->key > scsi_sk_recovered_error);
1540#endif
1541 OSD_SENSE_PRINT1("Main Sense information key=0x%x length(%d, %d) "
aa9fffbe 1542 "additional_code=0x%x async_error=%d errors=0x%x\n",
98f3aea2 1543 osi->key, original_sense_len, sense_len,
aa9fffbe 1544 osi->additional_code, or->async_error,
5d0961fd 1545 or->req_errors);
98f3aea2
BH		 1546
1547 if (original_sense_len < sense_len)
1548 sense_len = original_sense_len;
1549
1550 cur_descriptor = ssdb->ssd;
1551 sense_len -= sizeof(*ssdb);
1552 while (sense_len > 0) {
1553 struct scsi_sense_descriptor *ssd = cur_descriptor;
1554 int cur_len = ssd->additional_length + 2;
1555
1556 sense_len -= cur_len;
1557
1558 if (sense_len < 0)
1559 break; /* sense was truncated */
1560
1561 switch (ssd->descriptor_type) {
1562 case scsi_sense_information:
1563 case scsi_sense_command_specific_information:
1564 {
1565 struct scsi_sense_command_specific_data_descriptor
1566 *sscd = cur_descriptor;
1567
1568 osi->command_info =
1569 get_unaligned_be64(&sscd->information) ;
1570 OSD_SENSE_PRINT2(
1571 "command_specific_information 0x%llx \n",
1572 _LLU(osi->command_info));
1573 break;
1574 }
1575 case scsi_sense_key_specific:
1576 {
1577 struct scsi_sense_key_specific_data_descriptor
1578 *ssks = cur_descriptor;
1579
1580 osi->sense_info = get_unaligned_be16(&ssks->value);
1581 OSD_SENSE_PRINT2(
1582 "sense_key_specific_information %u"
1583 "sksv_cd_bpv_bp (0x%x)\n",
1584 osi->sense_info, ssks->sksv_cd_bpv_bp);
1585 break;
1586 }
1587 case osd_sense_object_identification:
1588 { /*FIXME: Keep first not last, Store in array*/
1589 struct osd_sense_identification_data_descriptor
1590 *osidd = cur_descriptor;
1591
1592 osi->not_initiated_command_functions =
1593 le32_to_cpu(osidd->not_initiated_functions);
1594 osi->completed_command_functions =
1595 le32_to_cpu(osidd->completed_functions);
1596 osi->obj.partition = be64_to_cpu(osidd->partition_id);
1597 osi->obj.id = be64_to_cpu(osidd->object_id);
1598 OSD_SENSE_PRINT2(
1599 "object_identification pid=0x%llx oid=0x%llx\n",
1600 _LLU(osi->obj.partition), _LLU(osi->obj.id));
1601 OSD_SENSE_PRINT2(
1602 "not_initiated_bits(%x) "
1603 "completed_command_bits(%x)\n",
1604 osi->not_initiated_command_functions,
1605 osi->completed_command_functions);
1606 break;
1607 }
1608 case osd_sense_response_integrity_check:
1609 {
1610 struct osd_sense_response_integrity_check_descriptor
1611 *osricd = cur_descriptor;
1612 const unsigned len =
1613 sizeof(osricd->integrity_check_value);
1614 char key_dump[len*4 + 2]; /* 2nibbles+space+ASCII */
1615
1616 hex_dump_to_buffer(osricd->integrity_check_value, len,
1617 32, 1, key_dump, sizeof(key_dump), true);
1618 OSD_SENSE_PRINT2("response_integrity [%s]\n", key_dump);
1619 }
1620 case osd_sense_attribute_identification:
1621 {
1622 struct osd_sense_attributes_data_descriptor
1623 *osadd = cur_descriptor;
71ecb74b 1624 unsigned len = min(cur_len, sense_len);
98f3aea2
BH		 1625 struct osd_sense_attr *pattr = osadd->sense_attrs;
1626
71ecb74b 1627 while (len >= sizeof(*pattr)) {
98f3aea2
BH		 1628 u32 attr_page = be32_to_cpu(pattr->attr_page);
1629 u32 attr_id = be32_to_cpu(pattr->attr_id);
1630
71ecb74b 1631 if (!osi->attr.attr_page) {
98f3aea2
BH		 1632 osi->attr.attr_page = attr_page;
1633 osi->attr.attr_id = attr_id;
1634 }
1635
1636 if (bad_attr_list && max_attr) {
1637 bad_attr_list->attr_page = attr_page;
1638 bad_attr_list->attr_id = attr_id;
1639 bad_attr_list++;
1640 max_attr--;
1641 }
71ecb74b
BH		 1642
1643 len -= sizeof(*pattr);
98f3aea2
BH		 1644 OSD_SENSE_PRINT2(
1645 "osd_sense_attribute_identification"
1646 "attr_page=0x%x attr_id=0x%x\n",
1647 attr_page, attr_id);
1648 }
1649 }
1650 /*These are not legal for OSD*/
1651 case scsi_sense_field_replaceable_unit:
1652 OSD_SENSE_PRINT2("scsi_sense_field_replaceable_unit\n");
1653 break;
1654 case scsi_sense_stream_commands:
1655 OSD_SENSE_PRINT2("scsi_sense_stream_commands\n");
1656 break;
1657 case scsi_sense_block_commands:
1658 OSD_SENSE_PRINT2("scsi_sense_block_commands\n");
1659 break;
1660 case scsi_sense_ata_return:
1661 OSD_SENSE_PRINT2("scsi_sense_ata_return\n");
1662 break;
1663 default:
1664 if (ssd->descriptor_type <= scsi_sense_Reserved_last)
1665 OSD_SENSE_PRINT2(
1666 "scsi_sense Reserved descriptor (0x%x)",
1667 ssd->descriptor_type);
1668 else
1669 OSD_SENSE_PRINT2(
1670 "scsi_sense Vendor descriptor (0x%x)",
1671 ssd->descriptor_type);
1672 }
1673
1674 cur_descriptor += cur_len;
1675 }
1676
aa9fffbe
BH		 1677analyze:
1678 if (!osi->key) {
1679 /* scsi sense is Empty, the request was never issued to target
1680 * linux return code might tell us what happened.
1681 */
1682 if (or->async_error == -ENOMEM)
1683 osi->osd_err_pri = OSD_ERR_PRI_RESOURCE;
1684 else
1685 osi->osd_err_pri = OSD_ERR_PRI_UNREACHABLE;
1686 ret = or->async_error;
1687 } else if (osi->key <= scsi_sk_recovered_error) {
1688 osi->osd_err_pri = 0;
1689 ret = 0;
1690 } else if (osi->additional_code == scsi_invalid_field_in_cdb) {
1691 if (osi->cdb_field_offset == OSD_CFO_STARTING_BYTE) {
1692 osi->osd_err_pri = OSD_ERR_PRI_CLEAR_PAGES;
1693 ret = -EFAULT; /* caller should recover from this */
1694 } else if (osi->cdb_field_offset == OSD_CFO_OBJECT_ID) {
1695 osi->osd_err_pri = OSD_ERR_PRI_NOT_FOUND;
1696 ret = -ENOENT;
1697 } else if (osi->cdb_field_offset == OSD_CFO_PERMISSIONS) {
1698 osi->osd_err_pri = OSD_ERR_PRI_NO_ACCESS;
1699 ret = -EACCES;
1700 } else {
1701 osi->osd_err_pri = OSD_ERR_PRI_BAD_CRED;
1702 ret = -EINVAL;
1703 }
1704 } else if (osi->additional_code == osd_quota_error) {
1705 osi->osd_err_pri = OSD_ERR_PRI_NO_SPACE;
1706 ret = -ENOSPC;
1707 } else if (_is_osd_security_code(osi->additional_code)) {
1708 osi->osd_err_pri = OSD_ERR_PRI_BAD_CRED;
1709 ret = -EINVAL;
1710 } else {
1711 osi->osd_err_pri = OSD_ERR_PRI_EIO;
1712 ret = -EIO;
1713 }
1714
5d0961fd
BH		 1715 if (!or->out.residual)
1716 or->out.residual = or->out.total_bytes;
1717 if (!or->in.residual)
1718 or->in.residual = or->in.total_bytes;
aa9fffbe
BH		 1719
1720 return ret;
98f3aea2
BH		 1721}
1722EXPORT_SYMBOL(osd_req_decode_sense_full);
1723
02941a53
BH		 1724/*
1725 * Implementation of osd_sec.h API
1726 * TODO: Move to a separate osd_sec.c file at a later stage.
1727 */
1728
1729enum { OSD_SEC_CAP_V1_ALL_CAPS =
1730 OSD_SEC_CAP_APPEND | OSD_SEC_CAP_OBJ_MGMT | OSD_SEC_CAP_REMOVE |
1731 OSD_SEC_CAP_CREATE | OSD_SEC_CAP_SET_ATTR | OSD_SEC_CAP_GET_ATTR |
1732 OSD_SEC_CAP_WRITE | OSD_SEC_CAP_READ | OSD_SEC_CAP_POL_SEC |
1733 OSD_SEC_CAP_GLOBAL | OSD_SEC_CAP_DEV_MGMT
1734};
1735
c6572c98
BH		 1736enum { OSD_SEC_CAP_V2_ALL_CAPS =
1737 OSD_SEC_CAP_V1_ALL_CAPS | OSD_SEC_CAP_QUERY | OSD_SEC_CAP_M_OBJECT
1738};
1739
02941a53
BH		 1740void osd_sec_init_nosec_doall_caps(void *caps,
1741 const struct osd_obj_id *obj, bool is_collection, const bool is_v1)
1742{
1743 struct osd_capability *cap = caps;
1744 u8 type;
1745 u8 descriptor_type;
1746
1747 if (likely(obj->id)) {
1748 if (unlikely(is_collection)) {
1749 type = OSD_SEC_OBJ_COLLECTION;
1750 descriptor_type = is_v1 ? OSD_SEC_OBJ_DESC_OBJ :
1751 OSD_SEC_OBJ_DESC_COL;
1752 } else {
1753 type = OSD_SEC_OBJ_USER;
1754 descriptor_type = OSD_SEC_OBJ_DESC_OBJ;
1755 }
1756 WARN_ON(!obj->partition);
1757 } else {
1758 type = obj->partition ? OSD_SEC_OBJ_PARTITION :
1759 OSD_SEC_OBJ_ROOT;
1760 descriptor_type = OSD_SEC_OBJ_DESC_PAR;
1761 }
1762
1763 memset(cap, 0, sizeof(*cap));
1764
1765 cap->h.format = OSD_SEC_CAP_FORMAT_VER1;
1766 cap->h.integrity_algorithm__key_version = 0; /* MAKE_BYTE(0, 0); */
1767 cap->h.security_method = OSD_SEC_NOSEC;
1768/* cap->expiration_time;
1769 cap->AUDIT[30-10];
1770 cap->discriminator[42-30];
1771 cap->object_created_time; */
1772 cap->h.object_type = type;
1773 osd_sec_set_caps(&cap->h, OSD_SEC_CAP_V1_ALL_CAPS);
1774 cap->h.object_descriptor_type = descriptor_type;
1775 cap->od.obj_desc.policy_access_tag = 0;
1776 cap->od.obj_desc.allowed_partition_id = cpu_to_be64(obj->partition);
1777 cap->od.obj_desc.allowed_object_id = cpu_to_be64(obj->id);
1778}
1779EXPORT_SYMBOL(osd_sec_init_nosec_doall_caps);
1780
c6572c98
BH		 1781/* FIXME: Extract version from caps pointer.
1782 * Also Pete's target only supports caps from OSDv1 for now
1783 */
02941a53
BH		 1784void osd_set_caps(struct osd_cdb *cdb, const void *caps)
1785{
c6572c98
BH		 1786 bool is_ver1 = true;
1787 /* NOTE: They start at same address */
1788 memcpy(&cdb->v1.caps, caps, is_ver1 ? OSDv1_CAP_LEN : OSD_CAP_LEN);
02941a53 1789}
4ef1a3d7 1790
345c435d
BH		 1791bool osd_is_sec_alldata(struct osd_security_parameters *sec_parms __unused)
1792{
1793 return false;
1794}
1795
1796void osd_sec_sign_cdb(struct osd_cdb *ocdb __unused, const u8 *cap_key __unused)
1797{
1798}
1799
1800void osd_sec_sign_data(void *data_integ __unused,
1801 struct bio *bio __unused, const u8 *cap_key __unused)
1802{
1803}
1804
4ef1a3d7
BH		 1805/*
1806 * Declared in osd_protocol.h
1807 * 4.12.5 Data-In and Data-Out buffer offsets
1808 * byte offset = mantissa * (2^(exponent+8))
1809 * Returns the smallest allowed encoded offset that contains given @offset
1810 * The actual encoded offset returned is @offset + *@padding.
1811 */
1812osd_cdb_offset __osd_encode_offset(
1813 u64 offset, unsigned *padding, int min_shift, int max_shift)
1814{
1815 u64 try_offset = -1, mod, align;
1816 osd_cdb_offset be32_offset;
1817 int shift;
1818
1819 *padding = 0;
1820 if (!offset)
1821 return 0;
1822
1823 for (shift = min_shift; shift < max_shift; ++shift) {
1824 try_offset = offset >> shift;
1825 if (try_offset < (1 << OSD_OFFSET_MAX_BITS))
1826 break;
1827 }
1828
1829 BUG_ON(shift == max_shift);
1830
1831 align = 1 << shift;
1832 mod = offset & (align - 1);
1833 if (mod) {
1834 *padding = align - mod;
1835 try_offset += 1;
1836 }
1837
1838 try_offset |= ((shift - 8) & 0xf) << 28;
1839 be32_offset = cpu_to_be32((u32)try_offset);
1840
1841 OSD_DEBUG("offset=%llu mantissa=%llu exp=%d encoded=%x pad=%d\n",
1842 _LLU(offset), _LLU(try_offset & 0x0FFFFFFF), shift,
1843 be32_offset, *padding);
1844 return be32_offset;
1845}
Clone of davem's net-next-2.6 tree