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42#include <linux/slab.h>
43#include <linux/module.h>
44
45#include <scsi/osd_initiator.h>
46#include <scsi/osd_sec.h>
47#include <scsi/osd_attributes.h>
48#include <scsi/osd_sense.h>
49
50#include <scsi/scsi_device.h>
51#include <scsi/scsi_request.h>
52
53#include "osd_debug.h"
54
55#ifndef __unused
56# define __unused __attribute__((unused))
57#endif
58
59enum { OSD_REQ_RETRIES = 1 };
60
61MODULE_AUTHOR("Boaz Harrosh <ooo@electrozaur.com>");
62MODULE_DESCRIPTION("open-osd initiator library libosd.ko");
63MODULE_LICENSE("GPL");
64
65static inline void build_test(void)
66{
67
68 BUILD_BUG_ON(sizeof(struct osd_capability) != OSD_CAP_LEN);
69 BUILD_BUG_ON(sizeof(struct osdv2_cdb) != OSD_TOTAL_CDB_LEN);
70 BUILD_BUG_ON(sizeof(struct osdv1_cdb) != OSDv1_TOTAL_CDB_LEN);
71}
72
73static const char *_osd_ver_desc(struct osd_request *or)
74{
75 return osd_req_is_ver1(or) ? "OSD1" : "OSD2";
76}
77
78#define ATTR_DEF_RI(id, len) ATTR_DEF(OSD_APAGE_ROOT_INFORMATION, id, len)
79
80static int _osd_get_print_system_info(struct osd_dev *od,
81 void *caps, struct osd_dev_info *odi)
82{
83 struct osd_request *or;
84 struct osd_attr get_attrs[] = {
85 ATTR_DEF_RI(OSD_ATTR_RI_VENDOR_IDENTIFICATION, 8),
86 ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_IDENTIFICATION, 16),
87 ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_MODEL, 32),
88 ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_REVISION_LEVEL, 4),
89 ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_SERIAL_NUMBER, 64 ),
90 ATTR_DEF_RI(OSD_ATTR_RI_OSD_NAME, 64 ),
91 ATTR_DEF_RI(OSD_ATTR_RI_TOTAL_CAPACITY, 8),
92 ATTR_DEF_RI(OSD_ATTR_RI_USED_CAPACITY, 8),
93 ATTR_DEF_RI(OSD_ATTR_RI_NUMBER_OF_PARTITIONS, 8),
94 ATTR_DEF_RI(OSD_ATTR_RI_CLOCK, 6),
95
96 ATTR_DEF_RI(OSD_ATTR_RI_OSD_SYSTEM_ID, 20),
97 };
98 void *iter = NULL, *pFirst;
99 int nelem = ARRAY_SIZE(get_attrs), a = 0;
100 int ret;
101
102 or = osd_start_request(od, GFP_KERNEL);
103 if (!or)
104 return -ENOMEM;
105
106
107 osd_req_get_attributes(or, &osd_root_object);
108 osd_req_add_get_attr_list(or, get_attrs, ARRAY_SIZE(get_attrs));
109
110 ret = osd_finalize_request(or, 0, caps, NULL);
111 if (ret)
112 goto out;
113
114 ret = osd_execute_request(or);
115 if (ret) {
116 OSD_ERR("Failed to detect %s => %d\n", _osd_ver_desc(or), ret);
117 goto out;
118 }
119
120 osd_req_decode_get_attr_list(or, get_attrs, &nelem, &iter);
121
122 OSD_INFO("Detected %s device\n",
123 _osd_ver_desc(or));
124
125 pFirst = get_attrs[a++].val_ptr;
126 OSD_INFO("VENDOR_IDENTIFICATION [%s]\n",
127 (char *)pFirst);
128
129 pFirst = get_attrs[a++].val_ptr;
130 OSD_INFO("PRODUCT_IDENTIFICATION [%s]\n",
131 (char *)pFirst);
132
133 pFirst = get_attrs[a++].val_ptr;
134 OSD_INFO("PRODUCT_MODEL [%s]\n",
135 (char *)pFirst);
136
137 pFirst = get_attrs[a++].val_ptr;
138 OSD_INFO("PRODUCT_REVISION_LEVEL [%u]\n",
139 pFirst ? get_unaligned_be32(pFirst) : ~0U);
140
141 pFirst = get_attrs[a++].val_ptr;
142 OSD_INFO("PRODUCT_SERIAL_NUMBER [%s]\n",
143 (char *)pFirst);
144
145 odi->osdname_len = get_attrs[a].len;
146
147 odi->osdname = kzalloc(odi->osdname_len + 1, GFP_KERNEL);
148 if (!odi->osdname) {
149 ret = -ENOMEM;
150 goto out;
151 }
152 if (odi->osdname_len)
153 memcpy(odi->osdname, get_attrs[a].val_ptr, odi->osdname_len);
154 OSD_INFO("OSD_NAME [%s]\n", odi->osdname);
155 a++;
156
157 pFirst = get_attrs[a++].val_ptr;
158 OSD_INFO("TOTAL_CAPACITY [0x%llx]\n",
159 pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL);
160
161 pFirst = get_attrs[a++].val_ptr;
162 OSD_INFO("USED_CAPACITY [0x%llx]\n",
163 pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL);
164
165 pFirst = get_attrs[a++].val_ptr;
166 OSD_INFO("NUMBER_OF_PARTITIONS [%llu]\n",
167 pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL);
168
169 if (a >= nelem)
170 goto out;
171
172
173 pFirst = get_attrs[a++].val_ptr;
174 OSD_INFO("CLOCK [0x%6phN]\n", pFirst);
175
176 if (a < nelem) {
177 unsigned len = get_attrs[a].len;
178 char sid_dump[32*4 + 2];
179
180 hex_dump_to_buffer(get_attrs[a].val_ptr, len, 32, 1,
181 sid_dump, sizeof(sid_dump), true);
182 OSD_INFO("OSD_SYSTEM_ID(%d)\n"
183 " [%s]\n", len, sid_dump);
184
185 if (unlikely(len > sizeof(odi->systemid))) {
186 OSD_ERR("OSD Target error: OSD_SYSTEM_ID too long(%d). "
187 "device identification might not work\n", len);
188 len = sizeof(odi->systemid);
189 }
190 odi->systemid_len = len;
191 memcpy(odi->systemid, get_attrs[a].val_ptr, len);
192 a++;
193 }
194out:
195 osd_end_request(or);
196 return ret;
197}
198
199int osd_auto_detect_ver(struct osd_dev *od,
200 void *caps, struct osd_dev_info *odi)
201{
202 int ret;
203
204
205 ret = _osd_get_print_system_info(od, caps, odi);
206 if (ret) {
207 osd_dev_set_ver(od, OSD_VER1);
208 OSD_DEBUG("converting to OSD1\n");
209 ret = _osd_get_print_system_info(od, caps, odi);
210 }
211
212 return ret;
213}
214EXPORT_SYMBOL(osd_auto_detect_ver);
215
216static unsigned _osd_req_cdb_len(struct osd_request *or)
217{
218 return osd_req_is_ver1(or) ? OSDv1_TOTAL_CDB_LEN : OSD_TOTAL_CDB_LEN;
219}
220
221static unsigned _osd_req_alist_elem_size(struct osd_request *or, unsigned len)
222{
223 return osd_req_is_ver1(or) ?
224 osdv1_attr_list_elem_size(len) :
225 osdv2_attr_list_elem_size(len);
226}
227
228static void _osd_req_alist_elem_encode(struct osd_request *or,
229 void *attr_last, const struct osd_attr *oa)
230{
231 if (osd_req_is_ver1(or)) {
232 struct osdv1_attributes_list_element *attr = attr_last;
233
234 attr->attr_page = cpu_to_be32(oa->attr_page);
235 attr->attr_id = cpu_to_be32(oa->attr_id);
236 attr->attr_bytes = cpu_to_be16(oa->len);
237 memcpy(attr->attr_val, oa->val_ptr, oa->len);
238 } else {
239 struct osdv2_attributes_list_element *attr = attr_last;
240
241 attr->attr_page = cpu_to_be32(oa->attr_page);
242 attr->attr_id = cpu_to_be32(oa->attr_id);
243 attr->attr_bytes = cpu_to_be16(oa->len);
244 memcpy(attr->attr_val, oa->val_ptr, oa->len);
245 }
246}
247
248static int _osd_req_alist_elem_decode(struct osd_request *or,
249 void *cur_p, struct osd_attr *oa, unsigned max_bytes)
250{
251 unsigned inc;
252 if (osd_req_is_ver1(or)) {
253 struct osdv1_attributes_list_element *attr = cur_p;
254
255 if (max_bytes < sizeof(*attr))
256 return -1;
257
258 oa->len = be16_to_cpu(attr->attr_bytes);
259 inc = _osd_req_alist_elem_size(or, oa->len);
260 if (inc > max_bytes)
261 return -1;
262
263 oa->attr_page = be32_to_cpu(attr->attr_page);
264 oa->attr_id = be32_to_cpu(attr->attr_id);
265
266
267
268
269
270 oa->val_ptr = likely(oa->len) ? attr->attr_val :
271 (u8 *)&attr->attr_bytes;
272 } else {
273 struct osdv2_attributes_list_element *attr = cur_p;
274
275 if (max_bytes < sizeof(*attr))
276 return -1;
277
278 oa->len = be16_to_cpu(attr->attr_bytes);
279 inc = _osd_req_alist_elem_size(or, oa->len);
280 if (inc > max_bytes)
281 return -1;
282
283 oa->attr_page = be32_to_cpu(attr->attr_page);
284 oa->attr_id = be32_to_cpu(attr->attr_id);
285
286
287
288
289
290
291 oa->val_ptr = likely(oa->len) ? attr->attr_val : attr->reserved;
292 }
293 return inc;
294}
295
296static unsigned _osd_req_alist_size(struct osd_request *or, void *list_head)
297{
298 return osd_req_is_ver1(or) ?
299 osdv1_list_size(list_head) :
300 osdv2_list_size(list_head);
301}
302
303static unsigned _osd_req_sizeof_alist_header(struct osd_request *or)
304{
305 return osd_req_is_ver1(or) ?
306 sizeof(struct osdv1_attributes_list_header) :
307 sizeof(struct osdv2_attributes_list_header);
308}
309
310static void _osd_req_set_alist_type(struct osd_request *or,
311 void *list, int list_type)
312{
313 if (osd_req_is_ver1(or)) {
314 struct osdv1_attributes_list_header *attr_list = list;
315
316 memset(attr_list, 0, sizeof(*attr_list));
317 attr_list->type = list_type;
318 } else {
319 struct osdv2_attributes_list_header *attr_list = list;
320
321 memset(attr_list, 0, sizeof(*attr_list));
322 attr_list->type = list_type;
323 }
324}
325
326static bool _osd_req_is_alist_type(struct osd_request *or,
327 void *list, int list_type)
328{
329 if (!list)
330 return false;
331
332 if (osd_req_is_ver1(or)) {
333 struct osdv1_attributes_list_header *attr_list = list;
334
335 return attr_list->type == list_type;
336 } else {
337 struct osdv2_attributes_list_header *attr_list = list;
338
339 return attr_list->type == list_type;
340 }
341}
342
343
344static void _osd_req_encode_olist(struct osd_request *or,
345 struct osd_obj_id_list *list)
346{
347 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
348
349 if (osd_req_is_ver1(or)) {
350 cdbh->v1.list_identifier = list->list_identifier;
351 cdbh->v1.start_address = list->continuation_id;
352 } else {
353 cdbh->v2.list_identifier = list->list_identifier;
354 cdbh->v2.start_address = list->continuation_id;
355 }
356}
357
358static osd_cdb_offset osd_req_encode_offset(struct osd_request *or,
359 u64 offset, unsigned *padding)
360{
361 return __osd_encode_offset(offset, padding,
362 osd_req_is_ver1(or) ?
363 OSDv1_OFFSET_MIN_SHIFT : OSD_OFFSET_MIN_SHIFT,
364 OSD_OFFSET_MAX_SHIFT);
365}
366
367static struct osd_security_parameters *
368_osd_req_sec_params(struct osd_request *or)
369{
370 struct osd_cdb *ocdb = &or->cdb;
371
372 if (osd_req_is_ver1(or))
373 return (struct osd_security_parameters *)&ocdb->v1.sec_params;
374 else
375 return (struct osd_security_parameters *)&ocdb->v2.sec_params;
376}
377
378void osd_dev_init(struct osd_dev *osdd, struct scsi_device *scsi_device)
379{
380 memset(osdd, 0, sizeof(*osdd));
381 osdd->scsi_device = scsi_device;
382 osdd->def_timeout = BLK_DEFAULT_SG_TIMEOUT;
383#ifdef OSD_VER1_SUPPORT
384 osdd->version = OSD_VER2;
385#endif
386
387}
388EXPORT_SYMBOL(osd_dev_init);
389
390void osd_dev_fini(struct osd_dev *osdd)
391{
392
393
394 osdd->scsi_device = NULL;
395}
396EXPORT_SYMBOL(osd_dev_fini);
397
398static struct osd_request *_osd_request_alloc(gfp_t gfp)
399{
400 struct osd_request *or;
401
402
403 or = kzalloc(sizeof(*or), gfp);
404 return or;
405}
406
407static void _osd_request_free(struct osd_request *or)
408{
409 kfree(or);
410}
411
412struct osd_request *osd_start_request(struct osd_dev *dev, gfp_t gfp)
413{
414 struct osd_request *or;
415
416 or = _osd_request_alloc(gfp);
417 if (!or)
418 return NULL;
419
420 or->osd_dev = dev;
421 or->alloc_flags = gfp;
422 or->timeout = dev->def_timeout;
423 or->retries = OSD_REQ_RETRIES;
424
425 return or;
426}
427EXPORT_SYMBOL(osd_start_request);
428
429static void _osd_free_seg(struct osd_request *or __unused,
430 struct _osd_req_data_segment *seg)
431{
432 if (!seg->buff || !seg->alloc_size)
433 return;
434
435 kfree(seg->buff);
436 seg->buff = NULL;
437 seg->alloc_size = 0;
438}
439
440static void _put_request(struct request *rq)
441{
442
443
444
445
446
447
448 if (unlikely(rq->bio))
449 blk_end_request(rq, BLK_STS_IOERR, blk_rq_bytes(rq));
450 else
451 blk_put_request(rq);
452}
453
454void osd_end_request(struct osd_request *or)
455{
456 struct request *rq = or->request;
457
458 if (rq) {
459 if (rq->next_rq) {
460 _put_request(rq->next_rq);
461 rq->next_rq = NULL;
462 }
463
464 _put_request(rq);
465 }
466
467 _osd_free_seg(or, &or->get_attr);
468 _osd_free_seg(or, &or->enc_get_attr);
469 _osd_free_seg(or, &or->set_attr);
470 _osd_free_seg(or, &or->cdb_cont);
471
472 _osd_request_free(or);
473}
474EXPORT_SYMBOL(osd_end_request);
475
476static void _set_error_resid(struct osd_request *or, struct request *req,
477 blk_status_t error)
478{
479 or->async_error = error;
480 or->req_errors = scsi_req(req)->result;
481 or->sense_len = scsi_req(req)->sense_len;
482 if (or->sense_len)
483 memcpy(or->sense, scsi_req(req)->sense, or->sense_len);
484 if (or->out.req)
485 or->out.residual = scsi_req(or->out.req)->resid_len;
486 if (or->in.req)
487 or->in.residual = scsi_req(or->in.req)->resid_len;
488}
489
490int osd_execute_request(struct osd_request *or)
491{
492 blk_execute_rq(or->request->q, NULL, or->request, 0);
493
494 if (scsi_req(or->request)->result) {
495 _set_error_resid(or, or->request, BLK_STS_IOERR);
496 return -EIO;
497 }
498
499 _set_error_resid(or, or->request, BLK_STS_OK);
500 return 0;
501}
502EXPORT_SYMBOL(osd_execute_request);
503
504static void osd_request_async_done(struct request *req, blk_status_t error)
505{
506 struct osd_request *or = req->end_io_data;
507
508 _set_error_resid(or, req, error);
509 if (req->next_rq) {
510 __blk_put_request(req->q, req->next_rq);
511 req->next_rq = NULL;
512 }
513
514 __blk_put_request(req->q, req);
515 or->request = NULL;
516 or->in.req = NULL;
517 or->out.req = NULL;
518
519 if (or->async_done)
520 or->async_done(or, or->async_private);
521 else
522 osd_end_request(or);
523}
524
525int osd_execute_request_async(struct osd_request *or,
526 osd_req_done_fn *done, void *private)
527{
528 or->request->end_io_data = or;
529 or->async_private = private;
530 or->async_done = done;
531
532 blk_execute_rq_nowait(or->request->q, NULL, or->request, 0,
533 osd_request_async_done);
534 return 0;
535}
536EXPORT_SYMBOL(osd_execute_request_async);
537
538u8 sg_out_pad_buffer[1 << OSDv1_OFFSET_MIN_SHIFT];
539u8 sg_in_pad_buffer[1 << OSDv1_OFFSET_MIN_SHIFT];
540
541static int _osd_realloc_seg(struct osd_request *or,
542 struct _osd_req_data_segment *seg, unsigned max_bytes)
543{
544 void *buff;
545
546 if (seg->alloc_size >= max_bytes)
547 return 0;
548
549 buff = krealloc(seg->buff, max_bytes, or->alloc_flags);
550 if (!buff) {
551 OSD_ERR("Failed to Realloc %d-bytes was-%d\n", max_bytes,
552 seg->alloc_size);
553 return -ENOMEM;
554 }
555
556 memset(buff + seg->alloc_size, 0, max_bytes - seg->alloc_size);
557 seg->buff = buff;
558 seg->alloc_size = max_bytes;
559 return 0;
560}
561
562static int _alloc_cdb_cont(struct osd_request *or, unsigned total_bytes)
563{
564 OSD_DEBUG("total_bytes=%d\n", total_bytes);
565 return _osd_realloc_seg(or, &or->cdb_cont, total_bytes);
566}
567
568static int _alloc_set_attr_list(struct osd_request *or,
569 const struct osd_attr *oa, unsigned nelem, unsigned add_bytes)
570{
571 unsigned total_bytes = add_bytes;
572
573 for (; nelem; --nelem, ++oa)
574 total_bytes += _osd_req_alist_elem_size(or, oa->len);
575
576 OSD_DEBUG("total_bytes=%d\n", total_bytes);
577 return _osd_realloc_seg(or, &or->set_attr, total_bytes);
578}
579
580static int _alloc_get_attr_desc(struct osd_request *or, unsigned max_bytes)
581{
582 OSD_DEBUG("total_bytes=%d\n", max_bytes);
583 return _osd_realloc_seg(or, &or->enc_get_attr, max_bytes);
584}
585
586static int _alloc_get_attr_list(struct osd_request *or)
587{
588 OSD_DEBUG("total_bytes=%d\n", or->get_attr.total_bytes);
589 return _osd_realloc_seg(or, &or->get_attr, or->get_attr.total_bytes);
590}
591
592
593
594
595
596static void _osdv1_req_encode_common(struct osd_request *or,
597 __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len)
598{
599 struct osdv1_cdb *ocdb = &or->cdb.v1;
600
601
602
603
604
605
606
607 act &= cpu_to_be16(~0x0080);
608
609 OSD_DEBUG("OSDv1 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.v1.length = cpu_to_be64(len);
618 ocdb->h.v1.start_address = cpu_to_be64(offset);
619}
620
621static void _osdv2_req_encode_common(struct osd_request *or,
622 __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len)
623{
624 struct osdv2_cdb *ocdb = &or->cdb.v2;
625
626 OSD_DEBUG("OSDv2 execute opcode 0x%x\n", be16_to_cpu(act));
627
628 ocdb->h.varlen_cdb.opcode = VARIABLE_LENGTH_CMD;
629 ocdb->h.varlen_cdb.additional_cdb_length = OSD_ADDITIONAL_CDB_LENGTH;
630 ocdb->h.varlen_cdb.service_action = act;
631
632 ocdb->h.partition = cpu_to_be64(obj->partition);
633 ocdb->h.object = cpu_to_be64(obj->id);
634 ocdb->h.v2.length = cpu_to_be64(len);
635 ocdb->h.v2.start_address = cpu_to_be64(offset);
636}
637
638static void _osd_req_encode_common(struct osd_request *or,
639 __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len)
640{
641 if (osd_req_is_ver1(or))
642 _osdv1_req_encode_common(or, act, obj, offset, len);
643 else
644 _osdv2_req_encode_common(or, act, obj, offset, len);
645}
646
647
648
649
650
651
652
653void osd_req_format(struct osd_request *or, u64 tot_capacity)
654{
655 _osd_req_encode_common(or, OSD_ACT_FORMAT_OSD, &osd_root_object, 0,
656 tot_capacity);
657}
658EXPORT_SYMBOL(osd_req_format);
659
660int osd_req_list_dev_partitions(struct osd_request *or,
661 osd_id initial_id, struct osd_obj_id_list *list, unsigned nelem)
662{
663 return osd_req_list_partition_objects(or, 0, initial_id, list, nelem);
664}
665EXPORT_SYMBOL(osd_req_list_dev_partitions);
666
667static void _osd_req_encode_flush(struct osd_request *or,
668 enum osd_options_flush_scope_values op)
669{
670 struct osd_cdb_head *ocdb = osd_cdb_head(&or->cdb);
671
672 ocdb->command_specific_options = op;
673}
674
675void osd_req_flush_obsd(struct osd_request *or,
676 enum osd_options_flush_scope_values op)
677{
678 _osd_req_encode_common(or, OSD_ACT_FLUSH_OSD, &osd_root_object, 0, 0);
679 _osd_req_encode_flush(or, op);
680}
681EXPORT_SYMBOL(osd_req_flush_obsd);
682
683
684
685
686
687
688
689
690static void _osd_req_encode_partition(struct osd_request *or,
691 __be16 act, osd_id partition)
692{
693 struct osd_obj_id par = {
694 .partition = partition,
695 .id = 0,
696 };
697
698 _osd_req_encode_common(or, act, &par, 0, 0);
699}
700
701void osd_req_create_partition(struct osd_request *or, osd_id partition)
702{
703 _osd_req_encode_partition(or, OSD_ACT_CREATE_PARTITION, partition);
704}
705EXPORT_SYMBOL(osd_req_create_partition);
706
707void osd_req_remove_partition(struct osd_request *or, osd_id partition)
708{
709 _osd_req_encode_partition(or, OSD_ACT_REMOVE_PARTITION, partition);
710}
711EXPORT_SYMBOL(osd_req_remove_partition);
712
713
714
715
716
717static int _osd_req_list_objects(struct osd_request *or,
718 __be16 action, const struct osd_obj_id *obj, osd_id initial_id,
719 struct osd_obj_id_list *list, unsigned nelem)
720{
721 struct request_queue *q = osd_request_queue(or->osd_dev);
722 u64 len = nelem * sizeof(osd_id) + sizeof(*list);
723 struct bio *bio;
724
725 _osd_req_encode_common(or, action, obj, (u64)initial_id, len);
726
727 if (list->list_identifier)
728 _osd_req_encode_olist(or, list);
729
730 WARN_ON(or->in.bio);
731 bio = bio_map_kern(q, list, len, or->alloc_flags);
732 if (IS_ERR(bio)) {
733 OSD_ERR("!!! Failed to allocate list_objects BIO\n");
734 return PTR_ERR(bio);
735 }
736
737 bio_set_op_attrs(bio, REQ_OP_READ, 0);
738 or->in.bio = bio;
739 or->in.total_bytes = bio->bi_iter.bi_size;
740 return 0;
741}
742
743int osd_req_list_partition_collections(struct osd_request *or,
744 osd_id partition, osd_id initial_id, struct osd_obj_id_list *list,
745 unsigned nelem)
746{
747 struct osd_obj_id par = {
748 .partition = partition,
749 .id = 0,
750 };
751
752 return osd_req_list_collection_objects(or, &par, initial_id, list,
753 nelem);
754}
755EXPORT_SYMBOL(osd_req_list_partition_collections);
756
757int osd_req_list_partition_objects(struct osd_request *or,
758 osd_id partition, osd_id initial_id, struct osd_obj_id_list *list,
759 unsigned nelem)
760{
761 struct osd_obj_id par = {
762 .partition = partition,
763 .id = 0,
764 };
765
766 return _osd_req_list_objects(or, OSD_ACT_LIST, &par, initial_id, list,
767 nelem);
768}
769EXPORT_SYMBOL(osd_req_list_partition_objects);
770
771void osd_req_flush_partition(struct osd_request *or,
772 osd_id partition, enum osd_options_flush_scope_values op)
773{
774 _osd_req_encode_partition(or, OSD_ACT_FLUSH_PARTITION, partition);
775 _osd_req_encode_flush(or, op);
776}
777EXPORT_SYMBOL(osd_req_flush_partition);
778
779
780
781
782
783
784
785
786
787int osd_req_list_collection_objects(struct osd_request *or,
788 const struct osd_obj_id *obj, osd_id initial_id,
789 struct osd_obj_id_list *list, unsigned nelem)
790{
791 return _osd_req_list_objects(or, OSD_ACT_LIST_COLLECTION, obj,
792 initial_id, list, nelem);
793}
794EXPORT_SYMBOL(osd_req_list_collection_objects);
795
796
797
798void osd_req_flush_collection(struct osd_request *or,
799 const struct osd_obj_id *obj, enum osd_options_flush_scope_values op)
800{
801 _osd_req_encode_common(or, OSD_ACT_FLUSH_PARTITION, obj, 0, 0);
802 _osd_req_encode_flush(or, op);
803}
804EXPORT_SYMBOL(osd_req_flush_collection);
805
806
807
808
809
810
811
812void osd_req_create_object(struct osd_request *or, struct osd_obj_id *obj)
813{
814 _osd_req_encode_common(or, OSD_ACT_CREATE, obj, 0, 0);
815}
816EXPORT_SYMBOL(osd_req_create_object);
817
818void osd_req_remove_object(struct osd_request *or, struct osd_obj_id *obj)
819{
820 _osd_req_encode_common(or, OSD_ACT_REMOVE, obj, 0, 0);
821}
822EXPORT_SYMBOL(osd_req_remove_object);
823
824
825
826
827
828
829void osd_req_write(struct osd_request *or,
830 const struct osd_obj_id *obj, u64 offset,
831 struct bio *bio, u64 len)
832{
833 _osd_req_encode_common(or, OSD_ACT_WRITE, obj, offset, len);
834 WARN_ON(or->out.bio || or->out.total_bytes);
835 WARN_ON(!op_is_write(bio_op(bio)));
836 or->out.bio = bio;
837 or->out.total_bytes = len;
838}
839EXPORT_SYMBOL(osd_req_write);
840
841int osd_req_write_kern(struct osd_request *or,
842 const struct osd_obj_id *obj, u64 offset, void* buff, u64 len)
843{
844 struct request_queue *req_q = osd_request_queue(or->osd_dev);
845 struct bio *bio = bio_map_kern(req_q, buff, len, GFP_KERNEL);
846
847 if (IS_ERR(bio))
848 return PTR_ERR(bio);
849
850 bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
851 osd_req_write(or, obj, offset, bio, len);
852 return 0;
853}
854EXPORT_SYMBOL(osd_req_write_kern);
855
856
857
858
859
860
861
862
863
864
865void osd_req_flush_object(struct osd_request *or,
866 const struct osd_obj_id *obj, enum osd_options_flush_scope_values op,
867 u64 offset, u64 len)
868{
869 if (unlikely(osd_req_is_ver1(or) && (offset || len))) {
870 OSD_DEBUG("OSD Ver1 flush on specific range ignored\n");
871 offset = 0;
872 len = 0;
873 }
874
875 _osd_req_encode_common(or, OSD_ACT_FLUSH, obj, offset, len);
876 _osd_req_encode_flush(or, op);
877}
878EXPORT_SYMBOL(osd_req_flush_object);
879
880void osd_req_read(struct osd_request *or,
881 const struct osd_obj_id *obj, u64 offset,
882 struct bio *bio, u64 len)
883{
884 _osd_req_encode_common(or, OSD_ACT_READ, obj, offset, len);
885 WARN_ON(or->in.bio || or->in.total_bytes);
886 WARN_ON(op_is_write(bio_op(bio)));
887 or->in.bio = bio;
888 or->in.total_bytes = len;
889}
890EXPORT_SYMBOL(osd_req_read);
891
892int osd_req_read_kern(struct osd_request *or,
893 const struct osd_obj_id *obj, u64 offset, void* buff, u64 len)
894{
895 struct request_queue *req_q = osd_request_queue(or->osd_dev);
896 struct bio *bio = bio_map_kern(req_q, buff, len, GFP_KERNEL);
897
898 if (IS_ERR(bio))
899 return PTR_ERR(bio);
900
901 osd_req_read(or, obj, offset, bio, len);
902 return 0;
903}
904EXPORT_SYMBOL(osd_req_read_kern);
905
906static int _add_sg_continuation_descriptor(struct osd_request *or,
907 const struct osd_sg_entry *sglist, unsigned numentries, u64 *len)
908{
909 struct osd_sg_continuation_descriptor *oscd;
910 u32 oscd_size;
911 unsigned i;
912 int ret;
913
914 oscd_size = sizeof(*oscd) + numentries * sizeof(oscd->entries[0]);
915
916 if (!or->cdb_cont.total_bytes) {
917
918
919
920 or->cdb_cont.total_bytes =
921 sizeof(struct osd_continuation_segment_header);
922 }
923
924 ret = _alloc_cdb_cont(or, or->cdb_cont.total_bytes + oscd_size);
925 if (unlikely(ret))
926 return ret;
927
928 oscd = or->cdb_cont.buff + or->cdb_cont.total_bytes;
929 oscd->hdr.type = cpu_to_be16(SCATTER_GATHER_LIST);
930 oscd->hdr.pad_length = 0;
931 oscd->hdr.length = cpu_to_be32(oscd_size - sizeof(*oscd));
932
933 *len = 0;
934
935 for (i = 0; i < numentries; i++) {
936 oscd->entries[i].offset = cpu_to_be64(sglist[i].offset);
937 oscd->entries[i].len = cpu_to_be64(sglist[i].len);
938 *len += sglist[i].len;
939 }
940
941 or->cdb_cont.total_bytes += oscd_size;
942 OSD_DEBUG("total_bytes=%d oscd_size=%d numentries=%d\n",
943 or->cdb_cont.total_bytes, oscd_size, numentries);
944 return 0;
945}
946
947static int _osd_req_finalize_cdb_cont(struct osd_request *or, const u8 *cap_key)
948{
949 struct request_queue *req_q = osd_request_queue(or->osd_dev);
950 struct bio *bio;
951 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
952 struct osd_continuation_segment_header *cont_seg_hdr;
953
954 if (!or->cdb_cont.total_bytes)
955 return 0;
956
957 cont_seg_hdr = or->cdb_cont.buff;
958 cont_seg_hdr->format = CDB_CONTINUATION_FORMAT_V2;
959 cont_seg_hdr->service_action = cdbh->varlen_cdb.service_action;
960
961
962 bio = bio_map_kern(req_q, or->cdb_cont.buff, or->cdb_cont.total_bytes,
963 GFP_KERNEL);
964 if (IS_ERR(bio))
965 return PTR_ERR(bio);
966
967 bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
968
969
970
971
972
973 osd_sec_sign_data(cont_seg_hdr->integrity_check, bio, cap_key);
974
975 cdbh->v2.cdb_continuation_length = cpu_to_be32(or->cdb_cont.total_bytes);
976
977
978
979
980
981
982 bio->bi_next = or->out.bio;
983 or->out.bio = bio;
984 or->out.total_bytes += or->cdb_cont.total_bytes;
985
986 return 0;
987}
988
989
990
991
992
993
994
995int osd_req_write_sg(struct osd_request *or,
996 const struct osd_obj_id *obj, struct bio *bio,
997 const struct osd_sg_entry *sglist, unsigned numentries)
998{
999 u64 len;
1000 int ret = _add_sg_continuation_descriptor(or, sglist, numentries, &len);
1001
1002 if (ret)
1003 return ret;
1004 osd_req_write(or, obj, 0, bio, len);
1005
1006 return 0;
1007}
1008EXPORT_SYMBOL(osd_req_write_sg);
1009
1010
1011
1012
1013int osd_req_read_sg(struct osd_request *or,
1014 const struct osd_obj_id *obj, struct bio *bio,
1015 const struct osd_sg_entry *sglist, unsigned numentries)
1016{
1017 u64 len;
1018 u64 off;
1019 int ret;
1020
1021 if (numentries > 1) {
1022 off = 0;
1023 ret = _add_sg_continuation_descriptor(or, sglist, numentries,
1024 &len);
1025 if (ret)
1026 return ret;
1027 } else {
1028
1029
1030
1031 len = sglist->len;
1032 off = sglist->offset;
1033 }
1034 osd_req_read(or, obj, off, bio, len);
1035
1036 return 0;
1037}
1038EXPORT_SYMBOL(osd_req_read_sg);
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048static struct bio *_create_sg_bios(struct osd_request *or,
1049 void **buff, const struct osd_sg_entry *sglist, unsigned numentries)
1050{
1051 struct request_queue *q = osd_request_queue(or->osd_dev);
1052 struct bio *bio;
1053 unsigned i;
1054
1055 bio = bio_kmalloc(GFP_KERNEL, numentries);
1056 if (unlikely(!bio)) {
1057 OSD_DEBUG("Failed to allocate BIO size=%u\n", numentries);
1058 return ERR_PTR(-ENOMEM);
1059 }
1060
1061 for (i = 0; i < numentries; i++) {
1062 unsigned offset = offset_in_page(buff[i]);
1063 struct page *page = virt_to_page(buff[i]);
1064 unsigned len = sglist[i].len;
1065 unsigned added_len;
1066
1067 BUG_ON(offset + len > PAGE_SIZE);
1068 added_len = bio_add_pc_page(q, bio, page, len, offset);
1069 if (unlikely(len != added_len)) {
1070 OSD_DEBUG("bio_add_pc_page len(%d) != added_len(%d)\n",
1071 len, added_len);
1072 bio_put(bio);
1073 return ERR_PTR(-ENOMEM);
1074 }
1075 }
1076
1077 return bio;
1078}
1079
1080int osd_req_write_sg_kern(struct osd_request *or,
1081 const struct osd_obj_id *obj, void **buff,
1082 const struct osd_sg_entry *sglist, unsigned numentries)
1083{
1084 struct bio *bio = _create_sg_bios(or, buff, sglist, numentries);
1085 if (IS_ERR(bio))
1086 return PTR_ERR(bio);
1087
1088 bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
1089 osd_req_write_sg(or, obj, bio, sglist, numentries);
1090
1091 return 0;
1092}
1093EXPORT_SYMBOL(osd_req_write_sg_kern);
1094
1095int osd_req_read_sg_kern(struct osd_request *or,
1096 const struct osd_obj_id *obj, void **buff,
1097 const struct osd_sg_entry *sglist, unsigned numentries)
1098{
1099 struct bio *bio = _create_sg_bios(or, buff, sglist, numentries);
1100 if (IS_ERR(bio))
1101 return PTR_ERR(bio);
1102
1103 osd_req_read_sg(or, obj, bio, sglist, numentries);
1104
1105 return 0;
1106}
1107EXPORT_SYMBOL(osd_req_read_sg_kern);
1108
1109
1110
1111void osd_req_get_attributes(struct osd_request *or,
1112 const struct osd_obj_id *obj)
1113{
1114 _osd_req_encode_common(or, OSD_ACT_GET_ATTRIBUTES, obj, 0, 0);
1115}
1116EXPORT_SYMBOL(osd_req_get_attributes);
1117
1118void osd_req_set_attributes(struct osd_request *or,
1119 const struct osd_obj_id *obj)
1120{
1121 _osd_req_encode_common(or, OSD_ACT_SET_ATTRIBUTES, obj, 0, 0);
1122}
1123EXPORT_SYMBOL(osd_req_set_attributes);
1124
1125
1126
1127
1128
1129int osd_req_add_set_attr_list(struct osd_request *or,
1130 const struct osd_attr *oa, unsigned nelem)
1131{
1132 unsigned total_bytes = or->set_attr.total_bytes;
1133 void *attr_last;
1134 int ret;
1135
1136 if (or->attributes_mode &&
1137 or->attributes_mode != OSD_CDB_GET_SET_ATTR_LISTS) {
1138 WARN_ON(1);
1139 return -EINVAL;
1140 }
1141 or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS;
1142
1143 if (!total_bytes) {
1144 total_bytes = _osd_req_sizeof_alist_header(or);
1145 ret = _alloc_set_attr_list(or, oa, nelem, total_bytes);
1146 if (ret)
1147 return ret;
1148 _osd_req_set_alist_type(or, or->set_attr.buff,
1149 OSD_ATTR_LIST_SET_RETRIEVE);
1150 }
1151 attr_last = or->set_attr.buff + total_bytes;
1152
1153 for (; nelem; --nelem) {
1154 unsigned elem_size = _osd_req_alist_elem_size(or, oa->len);
1155
1156 total_bytes += elem_size;
1157 if (unlikely(or->set_attr.alloc_size < total_bytes)) {
1158 or->set_attr.total_bytes = total_bytes - elem_size;
1159 ret = _alloc_set_attr_list(or, oa, nelem, total_bytes);
1160 if (ret)
1161 return ret;
1162 attr_last =
1163 or->set_attr.buff + or->set_attr.total_bytes;
1164 }
1165
1166 _osd_req_alist_elem_encode(or, attr_last, oa);
1167
1168 attr_last += elem_size;
1169 ++oa;
1170 }
1171
1172 or->set_attr.total_bytes = total_bytes;
1173 return 0;
1174}
1175EXPORT_SYMBOL(osd_req_add_set_attr_list);
1176
1177static int _req_append_segment(struct osd_request *or,
1178 unsigned padding, struct _osd_req_data_segment *seg,
1179 struct _osd_req_data_segment *last_seg, struct _osd_io_info *io)
1180{
1181 void *pad_buff;
1182 int ret;
1183
1184 if (padding) {
1185
1186 if (last_seg &&
1187 (padding <= last_seg->alloc_size - last_seg->total_bytes))
1188 pad_buff = last_seg->buff + last_seg->total_bytes;
1189 else
1190 pad_buff = io->pad_buff;
1191
1192 ret = blk_rq_map_kern(io->req->q, io->req, pad_buff, padding,
1193 or->alloc_flags);
1194 if (ret)
1195 return ret;
1196 io->total_bytes += padding;
1197 }
1198
1199 ret = blk_rq_map_kern(io->req->q, io->req, seg->buff, seg->total_bytes,
1200 or->alloc_flags);
1201 if (ret)
1202 return ret;
1203
1204 io->total_bytes += seg->total_bytes;
1205 OSD_DEBUG("padding=%d buff=%p total_bytes=%d\n", padding, seg->buff,
1206 seg->total_bytes);
1207 return 0;
1208}
1209
1210static int _osd_req_finalize_set_attr_list(struct osd_request *or)
1211{
1212 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
1213 unsigned padding;
1214 int ret;
1215
1216 if (!or->set_attr.total_bytes) {
1217 cdbh->attrs_list.set_attr_offset = OSD_OFFSET_UNUSED;
1218 return 0;
1219 }
1220
1221 cdbh->attrs_list.set_attr_bytes = cpu_to_be32(or->set_attr.total_bytes);
1222 cdbh->attrs_list.set_attr_offset =
1223 osd_req_encode_offset(or, or->out.total_bytes, &padding);
1224
1225 ret = _req_append_segment(or, padding, &or->set_attr,
1226 or->out.last_seg, &or->out);
1227 if (ret)
1228 return ret;
1229
1230 or->out.last_seg = &or->set_attr;
1231 return 0;
1232}
1233
1234int osd_req_add_get_attr_list(struct osd_request *or,
1235 const struct osd_attr *oa, unsigned nelem)
1236{
1237 unsigned total_bytes = or->enc_get_attr.total_bytes;
1238 void *attr_last;
1239 int ret;
1240
1241 if (or->attributes_mode &&
1242 or->attributes_mode != OSD_CDB_GET_SET_ATTR_LISTS) {
1243 WARN_ON(1);
1244 return -EINVAL;
1245 }
1246 or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS;
1247
1248
1249 if (!or->get_attr.total_bytes)
1250 or->get_attr.total_bytes = _osd_req_sizeof_alist_header(or);
1251
1252
1253 if (!total_bytes) {
1254 unsigned max_bytes;
1255
1256 total_bytes = _osd_req_sizeof_alist_header(or);
1257 max_bytes = total_bytes +
1258 nelem * sizeof(struct osd_attributes_list_attrid);
1259 ret = _alloc_get_attr_desc(or, max_bytes);
1260 if (ret)
1261 return ret;
1262
1263 _osd_req_set_alist_type(or, or->enc_get_attr.buff,
1264 OSD_ATTR_LIST_GET);
1265 }
1266 attr_last = or->enc_get_attr.buff + total_bytes;
1267
1268 for (; nelem; --nelem) {
1269 struct osd_attributes_list_attrid *attrid;
1270 const unsigned cur_size = sizeof(*attrid);
1271
1272 total_bytes += cur_size;
1273 if (unlikely(or->enc_get_attr.alloc_size < total_bytes)) {
1274 or->enc_get_attr.total_bytes = total_bytes - cur_size;
1275 ret = _alloc_get_attr_desc(or,
1276 total_bytes + nelem * sizeof(*attrid));
1277 if (ret)
1278 return ret;
1279 attr_last = or->enc_get_attr.buff +
1280 or->enc_get_attr.total_bytes;
1281 }
1282
1283 attrid = attr_last;
1284 attrid->attr_page = cpu_to_be32(oa->attr_page);
1285 attrid->attr_id = cpu_to_be32(oa->attr_id);
1286
1287 attr_last += cur_size;
1288
1289
1290 or->get_attr.total_bytes +=
1291 _osd_req_alist_elem_size(or, oa->len);
1292 ++oa;
1293 }
1294
1295 or->enc_get_attr.total_bytes = total_bytes;
1296
1297 OSD_DEBUG(
1298 "get_attr.total_bytes=%u(%u) enc_get_attr.total_bytes=%u(%zu)\n",
1299 or->get_attr.total_bytes,
1300 or->get_attr.total_bytes - _osd_req_sizeof_alist_header(or),
1301 or->enc_get_attr.total_bytes,
1302 (or->enc_get_attr.total_bytes - _osd_req_sizeof_alist_header(or))
1303 / sizeof(struct osd_attributes_list_attrid));
1304
1305 return 0;
1306}
1307EXPORT_SYMBOL(osd_req_add_get_attr_list);
1308
1309static int _osd_req_finalize_get_attr_list(struct osd_request *or)
1310{
1311 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
1312 unsigned out_padding;
1313 unsigned in_padding;
1314 int ret;
1315
1316 if (!or->enc_get_attr.total_bytes) {
1317 cdbh->attrs_list.get_attr_desc_offset = OSD_OFFSET_UNUSED;
1318 cdbh->attrs_list.get_attr_offset = OSD_OFFSET_UNUSED;
1319 return 0;
1320 }
1321
1322 ret = _alloc_get_attr_list(or);
1323 if (ret)
1324 return ret;
1325
1326
1327 OSD_DEBUG("out-going\n");
1328 cdbh->attrs_list.get_attr_desc_bytes =
1329 cpu_to_be32(or->enc_get_attr.total_bytes);
1330
1331 cdbh->attrs_list.get_attr_desc_offset =
1332 osd_req_encode_offset(or, or->out.total_bytes, &out_padding);
1333
1334 ret = _req_append_segment(or, out_padding, &or->enc_get_attr,
1335 or->out.last_seg, &or->out);
1336 if (ret)
1337 return ret;
1338 or->out.last_seg = &or->enc_get_attr;
1339
1340
1341 OSD_DEBUG("in-coming\n");
1342 cdbh->attrs_list.get_attr_alloc_length =
1343 cpu_to_be32(or->get_attr.total_bytes);
1344
1345 cdbh->attrs_list.get_attr_offset =
1346 osd_req_encode_offset(or, or->in.total_bytes, &in_padding);
1347
1348 ret = _req_append_segment(or, in_padding, &or->get_attr, NULL,
1349 &or->in);
1350 if (ret)
1351 return ret;
1352 or->in.last_seg = &or->get_attr;
1353
1354 return 0;
1355}
1356
1357int osd_req_decode_get_attr_list(struct osd_request *or,
1358 struct osd_attr *oa, int *nelem, void **iterator)
1359{
1360 unsigned cur_bytes, returned_bytes;
1361 int n;
1362 const unsigned sizeof_attr_list = _osd_req_sizeof_alist_header(or);
1363 void *cur_p;
1364
1365 if (!_osd_req_is_alist_type(or, or->get_attr.buff,
1366 OSD_ATTR_LIST_SET_RETRIEVE)) {
1367 oa->attr_page = 0;
1368 oa->attr_id = 0;
1369 oa->val_ptr = NULL;
1370 oa->len = 0;
1371 *iterator = NULL;
1372 return 0;
1373 }
1374
1375 if (*iterator) {
1376 BUG_ON((*iterator < or->get_attr.buff) ||
1377 (or->get_attr.buff + or->get_attr.alloc_size < *iterator));
1378 cur_p = *iterator;
1379 cur_bytes = (*iterator - or->get_attr.buff) - sizeof_attr_list;
1380 returned_bytes = or->get_attr.total_bytes;
1381 } else {
1382 cur_bytes = sizeof_attr_list;
1383 returned_bytes = _osd_req_alist_size(or, or->get_attr.buff) +
1384 sizeof_attr_list;
1385
1386 cur_p = or->get_attr.buff + sizeof_attr_list;
1387
1388 if (returned_bytes > or->get_attr.alloc_size) {
1389 OSD_DEBUG("target report: space was not big enough! "
1390 "Allocate=%u Needed=%u\n",
1391 or->get_attr.alloc_size,
1392 returned_bytes + sizeof_attr_list);
1393
1394 returned_bytes =
1395 or->get_attr.alloc_size - sizeof_attr_list;
1396 }
1397 or->get_attr.total_bytes = returned_bytes;
1398 }
1399
1400 for (n = 0; (n < *nelem) && (cur_bytes < returned_bytes); ++n) {
1401 int inc = _osd_req_alist_elem_decode(or, cur_p, oa,
1402 returned_bytes - cur_bytes);
1403
1404 if (inc < 0) {
1405 OSD_ERR("BAD FOOD from target. list not valid!"
1406 "c=%d r=%d n=%d\n",
1407 cur_bytes, returned_bytes, n);
1408 oa->val_ptr = NULL;
1409 cur_bytes = returned_bytes;
1410 break;
1411 }
1412
1413 cur_bytes += inc;
1414 cur_p += inc;
1415 ++oa;
1416 }
1417
1418 *iterator = (returned_bytes - cur_bytes) ? cur_p : NULL;
1419 *nelem = n;
1420 return returned_bytes - cur_bytes;
1421}
1422EXPORT_SYMBOL(osd_req_decode_get_attr_list);
1423
1424
1425
1426
1427
1428int osd_req_add_get_attr_page(struct osd_request *or,
1429 u32 page_id, void *attar_page, unsigned max_page_len,
1430 const struct osd_attr *set_one_attr)
1431{
1432 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
1433
1434 if (or->attributes_mode &&
1435 or->attributes_mode != OSD_CDB_GET_ATTR_PAGE_SET_ONE) {
1436 WARN_ON(1);
1437 return -EINVAL;
1438 }
1439 or->attributes_mode = OSD_CDB_GET_ATTR_PAGE_SET_ONE;
1440
1441 or->get_attr.buff = attar_page;
1442 or->get_attr.total_bytes = max_page_len;
1443
1444 cdbh->attrs_page.get_attr_page = cpu_to_be32(page_id);
1445 cdbh->attrs_page.get_attr_alloc_length = cpu_to_be32(max_page_len);
1446
1447 if (!set_one_attr || !set_one_attr->attr_page)
1448 return 0;
1449
1450 or->set_attr.buff = set_one_attr->val_ptr;
1451 or->set_attr.total_bytes = set_one_attr->len;
1452
1453 cdbh->attrs_page.set_attr_page = cpu_to_be32(set_one_attr->attr_page);
1454 cdbh->attrs_page.set_attr_id = cpu_to_be32(set_one_attr->attr_id);
1455 cdbh->attrs_page.set_attr_length = cpu_to_be32(set_one_attr->len);
1456 return 0;
1457}
1458EXPORT_SYMBOL(osd_req_add_get_attr_page);
1459
1460static int _osd_req_finalize_attr_page(struct osd_request *or)
1461{
1462 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
1463 unsigned in_padding, out_padding;
1464 int ret;
1465
1466
1467 cdbh->attrs_page.get_attr_offset =
1468 osd_req_encode_offset(or, or->in.total_bytes, &in_padding);
1469
1470 ret = _req_append_segment(or, in_padding, &or->get_attr, NULL,
1471 &or->in);
1472 if (ret)
1473 return ret;
1474
1475 if (or->set_attr.total_bytes == 0)
1476 return 0;
1477
1478
1479 cdbh->attrs_page.set_attr_offset =
1480 osd_req_encode_offset(or, or->out.total_bytes, &out_padding);
1481
1482 ret = _req_append_segment(or, out_padding, &or->set_attr, NULL,
1483 &or->out);
1484 return ret;
1485}
1486
1487static inline void osd_sec_parms_set_out_offset(bool is_v1,
1488 struct osd_security_parameters *sec_parms, osd_cdb_offset offset)
1489{
1490 if (is_v1)
1491 sec_parms->v1.data_out_integrity_check_offset = offset;
1492 else
1493 sec_parms->v2.data_out_integrity_check_offset = offset;
1494}
1495
1496static inline void osd_sec_parms_set_in_offset(bool is_v1,
1497 struct osd_security_parameters *sec_parms, osd_cdb_offset offset)
1498{
1499 if (is_v1)
1500 sec_parms->v1.data_in_integrity_check_offset = offset;
1501 else
1502 sec_parms->v2.data_in_integrity_check_offset = offset;
1503}
1504
1505static int _osd_req_finalize_data_integrity(struct osd_request *or,
1506 bool has_in, bool has_out, struct bio *out_data_bio, u64 out_data_bytes,
1507 const u8 *cap_key)
1508{
1509 struct osd_security_parameters *sec_parms = _osd_req_sec_params(or);
1510 int ret;
1511
1512 if (!osd_is_sec_alldata(sec_parms))
1513 return 0;
1514
1515 if (has_out) {
1516 struct _osd_req_data_segment seg = {
1517 .buff = &or->out_data_integ,
1518 .total_bytes = sizeof(or->out_data_integ),
1519 };
1520 unsigned pad;
1521
1522 or->out_data_integ.data_bytes = cpu_to_be64(out_data_bytes);
1523 or->out_data_integ.set_attributes_bytes = cpu_to_be64(
1524 or->set_attr.total_bytes);
1525 or->out_data_integ.get_attributes_bytes = cpu_to_be64(
1526 or->enc_get_attr.total_bytes);
1527
1528 osd_sec_parms_set_out_offset(osd_req_is_ver1(or), sec_parms,
1529 osd_req_encode_offset(or, or->out.total_bytes, &pad));
1530
1531 ret = _req_append_segment(or, pad, &seg, or->out.last_seg,
1532 &or->out);
1533 if (ret)
1534 return ret;
1535 or->out.last_seg = NULL;
1536
1537
1538 osd_sec_sign_data(&or->out_data_integ, out_data_bio,
1539 cap_key);
1540 }
1541
1542 if (has_in) {
1543 struct _osd_req_data_segment seg = {
1544 .buff = &or->in_data_integ,
1545 .total_bytes = sizeof(or->in_data_integ),
1546 };
1547 unsigned pad;
1548
1549 osd_sec_parms_set_in_offset(osd_req_is_ver1(or), sec_parms,
1550 osd_req_encode_offset(or, or->in.total_bytes, &pad));
1551
1552 ret = _req_append_segment(or, pad, &seg, or->in.last_seg,
1553 &or->in);
1554 if (ret)
1555 return ret;
1556
1557 or->in.last_seg = NULL;
1558 }
1559
1560 return 0;
1561}
1562
1563
1564
1565
1566static struct request *_make_request(struct request_queue *q, bool has_write,
1567 struct _osd_io_info *oii, gfp_t flags)
1568{
1569 struct request *req;
1570 struct bio *bio = oii->bio;
1571 int ret;
1572
1573 req = blk_get_request(q, has_write ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN,
1574 flags);
1575 if (IS_ERR(req))
1576 return req;
1577
1578 for_each_bio(bio) {
1579 struct bio *bounce_bio = bio;
1580
1581 ret = blk_rq_append_bio(req, &bounce_bio);
1582 if (ret)
1583 return ERR_PTR(ret);
1584 }
1585
1586 return req;
1587}
1588
1589static int _init_blk_request(struct osd_request *or,
1590 bool has_in, bool has_out)
1591{
1592 gfp_t flags = or->alloc_flags;
1593 struct scsi_device *scsi_device = or->osd_dev->scsi_device;
1594 struct request_queue *q = scsi_device->request_queue;
1595 struct request *req;
1596 int ret;
1597
1598 req = _make_request(q, has_out, has_out ? &or->out : &or->in, flags);
1599 if (IS_ERR(req)) {
1600 ret = PTR_ERR(req);
1601 goto out;
1602 }
1603
1604 or->request = req;
1605 req->rq_flags |= RQF_QUIET;
1606
1607 req->timeout = or->timeout;
1608 scsi_req(req)->retries = or->retries;
1609
1610 if (has_out) {
1611 or->out.req = req;
1612 if (has_in) {
1613
1614 req = _make_request(q, false, &or->in, flags);
1615 if (IS_ERR(req)) {
1616 OSD_DEBUG("blk_get_request for bidi failed\n");
1617 ret = PTR_ERR(req);
1618 goto out;
1619 }
1620 or->in.req = or->request->next_rq = req;
1621 }
1622 } else if (has_in)
1623 or->in.req = req;
1624
1625 ret = 0;
1626out:
1627 OSD_DEBUG("or=%p has_in=%d has_out=%d => %d, %p\n",
1628 or, has_in, has_out, ret, or->request);
1629 return ret;
1630}
1631
1632int osd_finalize_request(struct osd_request *or,
1633 u8 options, const void *cap, const u8 *cap_key)
1634{
1635 struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb);
1636 bool has_in, has_out;
1637
1638 struct bio *out_data_bio = or->out.bio;
1639 u64 out_data_bytes = or->out.total_bytes;
1640 int ret;
1641
1642 if (options & OSD_REQ_FUA)
1643 cdbh->options |= OSD_CDB_FUA;
1644
1645 if (options & OSD_REQ_DPO)
1646 cdbh->options |= OSD_CDB_DPO;
1647
1648 if (options & OSD_REQ_BYPASS_TIMESTAMPS)
1649 cdbh->timestamp_control = OSD_CDB_BYPASS_TIMESTAMPS;
1650
1651 osd_set_caps(&or->cdb, cap);
1652
1653 has_in = or->in.bio || or->get_attr.total_bytes;
1654 has_out = or->out.bio || or->cdb_cont.total_bytes ||
1655 or->set_attr.total_bytes || or->enc_get_attr.total_bytes;
1656
1657 ret = _osd_req_finalize_cdb_cont(or, cap_key);
1658 if (ret) {
1659 OSD_DEBUG("_osd_req_finalize_cdb_cont failed\n");
1660 return ret;
1661 }
1662 ret = _init_blk_request(or, has_in, has_out);
1663 if (ret) {
1664 OSD_DEBUG("_init_blk_request failed\n");
1665 return ret;
1666 }
1667
1668 or->out.pad_buff = sg_out_pad_buffer;
1669 or->in.pad_buff = sg_in_pad_buffer;
1670
1671 if (!or->attributes_mode)
1672 or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS;
1673 cdbh->command_specific_options |= or->attributes_mode;
1674 if (or->attributes_mode == OSD_CDB_GET_ATTR_PAGE_SET_ONE) {
1675 ret = _osd_req_finalize_attr_page(or);
1676 if (ret) {
1677 OSD_DEBUG("_osd_req_finalize_attr_page failed\n");
1678 return ret;
1679 }
1680 } else {
1681
1682
1683
1684
1685 ret = _osd_req_finalize_set_attr_list(or);
1686 if (ret) {
1687 OSD_DEBUG("_osd_req_finalize_set_attr_list failed\n");
1688 return ret;
1689 }
1690
1691 ret = _osd_req_finalize_get_attr_list(or);
1692 if (ret) {
1693 OSD_DEBUG("_osd_req_finalize_get_attr_list failed\n");
1694 return ret;
1695 }
1696 }
1697
1698 ret = _osd_req_finalize_data_integrity(or, has_in, has_out,
1699 out_data_bio, out_data_bytes,
1700 cap_key);
1701 if (ret)
1702 return ret;
1703
1704 osd_sec_sign_cdb(&or->cdb, cap_key);
1705
1706 scsi_req(or->request)->cmd = or->cdb.buff;
1707 scsi_req(or->request)->cmd_len = _osd_req_cdb_len(or);
1708
1709 return 0;
1710}
1711EXPORT_SYMBOL(osd_finalize_request);
1712
1713static bool _is_osd_security_code(int code)
1714{
1715 return (code == osd_security_audit_value_frozen) ||
1716 (code == osd_security_working_key_frozen) ||
1717 (code == osd_nonce_not_unique) ||
1718 (code == osd_nonce_timestamp_out_of_range) ||
1719 (code == osd_invalid_dataout_buffer_integrity_check_value);
1720}
1721
1722#define OSD_SENSE_PRINT1(fmt, a...) \
1723 do { \
1724 if (__cur_sense_need_output) \
1725 OSD_ERR(fmt, ##a); \
1726 } while (0)
1727
1728#define OSD_SENSE_PRINT2(fmt, a...) OSD_SENSE_PRINT1(" " fmt, ##a)
1729
1730int osd_req_decode_sense_full(struct osd_request *or,
1731 struct osd_sense_info *osi, bool silent,
1732 struct osd_obj_id *bad_obj_list __unused, int max_obj __unused,
1733 struct osd_attr *bad_attr_list, int max_attr)
1734{
1735 int sense_len, original_sense_len;
1736 struct osd_sense_info local_osi;
1737 struct scsi_sense_descriptor_based *ssdb;
1738 void *cur_descriptor;
1739#if (CONFIG_SCSI_OSD_DPRINT_SENSE == 0)
1740 const bool __cur_sense_need_output = false;
1741#else
1742 bool __cur_sense_need_output = !silent;
1743#endif
1744 int ret;
1745
1746 if (likely(!or->req_errors))
1747 return 0;
1748
1749 osi = osi ? : &local_osi;
1750 memset(osi, 0, sizeof(*osi));
1751
1752 ssdb = (typeof(ssdb))or->sense;
1753 sense_len = or->sense_len;
1754 if ((sense_len < (int)sizeof(*ssdb) || !ssdb->sense_key)) {
1755 OSD_ERR("Block-layer returned error(0x%x) but "
1756 "sense_len(%u) || key(%d) is empty\n",
1757 or->req_errors, sense_len, ssdb->sense_key);
1758 goto analyze;
1759 }
1760
1761 if ((ssdb->response_code != 0x72) && (ssdb->response_code != 0x73)) {
1762 OSD_ERR("Unrecognized scsi sense: rcode=%x length=%d\n",
1763 ssdb->response_code, sense_len);
1764 goto analyze;
1765 }
1766
1767 osi->key = ssdb->sense_key;
1768 osi->additional_code = be16_to_cpu(ssdb->additional_sense_code);
1769 original_sense_len = ssdb->additional_sense_length + 8;
1770
1771#if (CONFIG_SCSI_OSD_DPRINT_SENSE == 1)
1772 if (__cur_sense_need_output)
1773 __cur_sense_need_output = (osi->key > scsi_sk_recovered_error);
1774#endif
1775 OSD_SENSE_PRINT1("Main Sense information key=0x%x length(%d, %d) "
1776 "additional_code=0x%x async_error=%d errors=0x%x\n",
1777 osi->key, original_sense_len, sense_len,
1778 osi->additional_code, or->async_error,
1779 or->req_errors);
1780
1781 if (original_sense_len < sense_len)
1782 sense_len = original_sense_len;
1783
1784 cur_descriptor = ssdb->ssd;
1785 sense_len -= sizeof(*ssdb);
1786 while (sense_len > 0) {
1787 struct scsi_sense_descriptor *ssd = cur_descriptor;
1788 int cur_len = ssd->additional_length + 2;
1789
1790 sense_len -= cur_len;
1791
1792 if (sense_len < 0)
1793 break;
1794
1795 switch (ssd->descriptor_type) {
1796 case scsi_sense_information:
1797 case scsi_sense_command_specific_information:
1798 {
1799 struct scsi_sense_command_specific_data_descriptor
1800 *sscd = cur_descriptor;
1801
1802 osi->command_info =
1803 get_unaligned_be64(&sscd->information) ;
1804 OSD_SENSE_PRINT2(
1805 "command_specific_information 0x%llx \n",
1806 _LLU(osi->command_info));
1807 break;
1808 }
1809 case scsi_sense_key_specific:
1810 {
1811 struct scsi_sense_key_specific_data_descriptor
1812 *ssks = cur_descriptor;
1813
1814 osi->sense_info = get_unaligned_be16(&ssks->value);
1815 OSD_SENSE_PRINT2(
1816 "sense_key_specific_information %u"
1817 "sksv_cd_bpv_bp (0x%x)\n",
1818 osi->sense_info, ssks->sksv_cd_bpv_bp);
1819 break;
1820 }
1821 case osd_sense_object_identification:
1822 {
1823 struct osd_sense_identification_data_descriptor
1824 *osidd = cur_descriptor;
1825
1826 osi->not_initiated_command_functions =
1827 le32_to_cpu(osidd->not_initiated_functions);
1828 osi->completed_command_functions =
1829 le32_to_cpu(osidd->completed_functions);
1830 osi->obj.partition = be64_to_cpu(osidd->partition_id);
1831 osi->obj.id = be64_to_cpu(osidd->object_id);
1832 OSD_SENSE_PRINT2(
1833 "object_identification pid=0x%llx oid=0x%llx\n",
1834 _LLU(osi->obj.partition), _LLU(osi->obj.id));
1835 OSD_SENSE_PRINT2(
1836 "not_initiated_bits(%x) "
1837 "completed_command_bits(%x)\n",
1838 osi->not_initiated_command_functions,
1839 osi->completed_command_functions);
1840 break;
1841 }
1842 case osd_sense_response_integrity_check:
1843 {
1844 struct osd_sense_response_integrity_check_descriptor
1845 *osricd = cur_descriptor;
1846 const unsigned len =
1847 sizeof(osricd->integrity_check_value);
1848 char key_dump[len*4 + 2];
1849
1850 hex_dump_to_buffer(osricd->integrity_check_value, len,
1851 32, 1, key_dump, sizeof(key_dump), true);
1852 OSD_SENSE_PRINT2("response_integrity [%s]\n", key_dump);
1853 }
1854 case osd_sense_attribute_identification:
1855 {
1856 struct osd_sense_attributes_data_descriptor
1857 *osadd = cur_descriptor;
1858 unsigned len = min(cur_len, sense_len);
1859 struct osd_sense_attr *pattr = osadd->sense_attrs;
1860
1861 while (len >= sizeof(*pattr)) {
1862 u32 attr_page = be32_to_cpu(pattr->attr_page);
1863 u32 attr_id = be32_to_cpu(pattr->attr_id);
1864
1865 if (!osi->attr.attr_page) {
1866 osi->attr.attr_page = attr_page;
1867 osi->attr.attr_id = attr_id;
1868 }
1869
1870 if (bad_attr_list && max_attr) {
1871 bad_attr_list->attr_page = attr_page;
1872 bad_attr_list->attr_id = attr_id;
1873 bad_attr_list++;
1874 max_attr--;
1875 }
1876
1877 len -= sizeof(*pattr);
1878 OSD_SENSE_PRINT2(
1879 "osd_sense_attribute_identification"
1880 "attr_page=0x%x attr_id=0x%x\n",
1881 attr_page, attr_id);
1882 }
1883 }
1884
1885 case scsi_sense_field_replaceable_unit:
1886 OSD_SENSE_PRINT2("scsi_sense_field_replaceable_unit\n");
1887 break;
1888 case scsi_sense_stream_commands:
1889 OSD_SENSE_PRINT2("scsi_sense_stream_commands\n");
1890 break;
1891 case scsi_sense_block_commands:
1892 OSD_SENSE_PRINT2("scsi_sense_block_commands\n");
1893 break;
1894 case scsi_sense_ata_return:
1895 OSD_SENSE_PRINT2("scsi_sense_ata_return\n");
1896 break;
1897 default:
1898 if (ssd->descriptor_type <= scsi_sense_Reserved_last)
1899 OSD_SENSE_PRINT2(
1900 "scsi_sense Reserved descriptor (0x%x)",
1901 ssd->descriptor_type);
1902 else
1903 OSD_SENSE_PRINT2(
1904 "scsi_sense Vendor descriptor (0x%x)",
1905 ssd->descriptor_type);
1906 }
1907
1908 cur_descriptor += cur_len;
1909 }
1910
1911analyze:
1912 if (!osi->key) {
1913
1914
1915
1916 if (or->async_error == BLK_STS_RESOURCE)
1917 osi->osd_err_pri = OSD_ERR_PRI_RESOURCE;
1918 else
1919 osi->osd_err_pri = OSD_ERR_PRI_UNREACHABLE;
1920 ret = or->async_error;
1921 } else if (osi->key <= scsi_sk_recovered_error) {
1922 osi->osd_err_pri = 0;
1923 ret = 0;
1924 } else if (osi->additional_code == scsi_invalid_field_in_cdb) {
1925 if (osi->cdb_field_offset == OSD_CFO_STARTING_BYTE) {
1926 osi->osd_err_pri = OSD_ERR_PRI_CLEAR_PAGES;
1927 ret = -EFAULT;
1928 } else if (osi->cdb_field_offset == OSD_CFO_OBJECT_ID) {
1929 osi->osd_err_pri = OSD_ERR_PRI_NOT_FOUND;
1930 ret = -ENOENT;
1931 } else if (osi->cdb_field_offset == OSD_CFO_PERMISSIONS) {
1932 osi->osd_err_pri = OSD_ERR_PRI_NO_ACCESS;
1933 ret = -EACCES;
1934 } else {
1935 osi->osd_err_pri = OSD_ERR_PRI_BAD_CRED;
1936 ret = -EINVAL;
1937 }
1938 } else if (osi->additional_code == osd_quota_error) {
1939 osi->osd_err_pri = OSD_ERR_PRI_NO_SPACE;
1940 ret = -ENOSPC;
1941 } else if (_is_osd_security_code(osi->additional_code)) {
1942 osi->osd_err_pri = OSD_ERR_PRI_BAD_CRED;
1943 ret = -EINVAL;
1944 } else {
1945 osi->osd_err_pri = OSD_ERR_PRI_EIO;
1946 ret = -EIO;
1947 }
1948
1949 if (!or->out.residual)
1950 or->out.residual = or->out.total_bytes;
1951 if (!or->in.residual)
1952 or->in.residual = or->in.total_bytes;
1953
1954 return ret;
1955}
1956EXPORT_SYMBOL(osd_req_decode_sense_full);
1957
1958
1959
1960
1961
1962
1963enum { OSD_SEC_CAP_V1_ALL_CAPS =
1964 OSD_SEC_CAP_APPEND | OSD_SEC_CAP_OBJ_MGMT | OSD_SEC_CAP_REMOVE |
1965 OSD_SEC_CAP_CREATE | OSD_SEC_CAP_SET_ATTR | OSD_SEC_CAP_GET_ATTR |
1966 OSD_SEC_CAP_WRITE | OSD_SEC_CAP_READ | OSD_SEC_CAP_POL_SEC |
1967 OSD_SEC_CAP_GLOBAL | OSD_SEC_CAP_DEV_MGMT
1968};
1969
1970enum { OSD_SEC_CAP_V2_ALL_CAPS =
1971 OSD_SEC_CAP_V1_ALL_CAPS | OSD_SEC_CAP_QUERY | OSD_SEC_CAP_M_OBJECT
1972};
1973
1974void osd_sec_init_nosec_doall_caps(void *caps,
1975 const struct osd_obj_id *obj, bool is_collection, const bool is_v1)
1976{
1977 struct osd_capability *cap = caps;
1978 u8 type;
1979 u8 descriptor_type;
1980
1981 if (likely(obj->id)) {
1982 if (unlikely(is_collection)) {
1983 type = OSD_SEC_OBJ_COLLECTION;
1984 descriptor_type = is_v1 ? OSD_SEC_OBJ_DESC_OBJ :
1985 OSD_SEC_OBJ_DESC_COL;
1986 } else {
1987 type = OSD_SEC_OBJ_USER;
1988 descriptor_type = OSD_SEC_OBJ_DESC_OBJ;
1989 }
1990 WARN_ON(!obj->partition);
1991 } else {
1992 type = obj->partition ? OSD_SEC_OBJ_PARTITION :
1993 OSD_SEC_OBJ_ROOT;
1994 descriptor_type = OSD_SEC_OBJ_DESC_PAR;
1995 }
1996
1997 memset(cap, 0, sizeof(*cap));
1998
1999 cap->h.format = OSD_SEC_CAP_FORMAT_VER1;
2000 cap->h.integrity_algorithm__key_version = 0;
2001 cap->h.security_method = OSD_SEC_NOSEC;
2002
2003
2004
2005
2006 cap->h.object_type = type;
2007 osd_sec_set_caps(&cap->h, OSD_SEC_CAP_V1_ALL_CAPS);
2008 cap->h.object_descriptor_type = descriptor_type;
2009 cap->od.obj_desc.policy_access_tag = 0;
2010 cap->od.obj_desc.allowed_partition_id = cpu_to_be64(obj->partition);
2011 cap->od.obj_desc.allowed_object_id = cpu_to_be64(obj->id);
2012}
2013EXPORT_SYMBOL(osd_sec_init_nosec_doall_caps);
2014
2015
2016
2017
2018void osd_set_caps(struct osd_cdb *cdb, const void *caps)
2019{
2020
2021 memcpy(&cdb->v1.caps, caps, OSDv1_CAP_LEN);
2022}
2023
2024bool osd_is_sec_alldata(struct osd_security_parameters *sec_parms __unused)
2025{
2026 return false;
2027}
2028
2029void osd_sec_sign_cdb(struct osd_cdb *ocdb __unused, const u8 *cap_key __unused)
2030{
2031}
2032
2033void osd_sec_sign_data(void *data_integ __unused,
2034 struct bio *bio __unused, const u8 *cap_key __unused)
2035{
2036}
2037
2038
2039
2040
2041
2042
2043
2044
2045osd_cdb_offset __osd_encode_offset(
2046 u64 offset, unsigned *padding, int min_shift, int max_shift)
2047{
2048 u64 try_offset = -1, mod, align;
2049 osd_cdb_offset be32_offset;
2050 int shift;
2051
2052 *padding = 0;
2053 if (!offset)
2054 return 0;
2055
2056 for (shift = min_shift; shift < max_shift; ++shift) {
2057 try_offset = offset >> shift;
2058 if (try_offset < (1 << OSD_OFFSET_MAX_BITS))
2059 break;
2060 }
2061
2062 BUG_ON(shift == max_shift);
2063
2064 align = 1 << shift;
2065 mod = offset & (align - 1);
2066 if (mod) {
2067 *padding = align - mod;
2068 try_offset += 1;
2069 }
2070
2071 try_offset |= ((shift - 8) & 0xf) << 28;
2072 be32_offset = cpu_to_be32((u32)try_offset);
2073
2074 OSD_DEBUG("offset=%llu mantissa=%llu exp=%d encoded=%x pad=%d\n",
2075 _LLU(offset), _LLU(try_offset & 0x0FFFFFFF), shift,
2076 be32_offset, *padding);
2077 return be32_offset;
2078}
2079