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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: | |
aa281ac6 | 10 | * Boaz Harrosh <ooo@electrozaur.com> |
02941a53 BH |
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 | 42 | #include <linux/slab.h> |
acf3368f | 43 | #include <linux/module.h> |
5a0e3ad6 | 44 | |
02941a53 BH |
45 | #include <scsi/osd_initiator.h> |
46 | #include <scsi/osd_sec.h> | |
1b9dce94 | 47 | #include <scsi/osd_attributes.h> |
98f3aea2 BH |
48 | #include <scsi/osd_sense.h> |
49 | ||
02941a53 BH |
50 | #include <scsi/scsi_device.h> |
51 | ||
52 | #include "osd_debug.h" | |
53 | ||
4ef1a3d7 BH |
54 | #ifndef __unused |
55 | # define __unused __attribute__((unused)) | |
56 | #endif | |
57 | ||
02941a53 BH |
58 | enum { OSD_REQ_RETRIES = 1 }; |
59 | ||
aa281ac6 | 60 | MODULE_AUTHOR("Boaz Harrosh <ooo@electrozaur.com>"); |
02941a53 BH |
61 | MODULE_DESCRIPTION("open-osd initiator library libosd.ko"); |
62 | MODULE_LICENSE("GPL"); | |
63 | ||
64 | static inline void build_test(void) | |
65 | { | |
66 | /* structures were not packed */ | |
67 | BUILD_BUG_ON(sizeof(struct osd_capability) != OSD_CAP_LEN); | |
c6572c98 | 68 | BUILD_BUG_ON(sizeof(struct osdv2_cdb) != OSD_TOTAL_CDB_LEN); |
02941a53 BH |
69 | BUILD_BUG_ON(sizeof(struct osdv1_cdb) != OSDv1_TOTAL_CDB_LEN); |
70 | } | |
71 | ||
1b9dce94 BH |
72 | static const char *_osd_ver_desc(struct osd_request *or) |
73 | { | |
74 | return osd_req_is_ver1(or) ? "OSD1" : "OSD2"; | |
75 | } | |
76 | ||
77 | #define ATTR_DEF_RI(id, len) ATTR_DEF(OSD_APAGE_ROOT_INFORMATION, id, len) | |
78 | ||
2cdd6410 BH |
79 | static int _osd_get_print_system_info(struct osd_dev *od, |
80 | void *caps, struct osd_dev_info *odi) | |
1b9dce94 BH |
81 | { |
82 | struct osd_request *or; | |
83 | struct osd_attr get_attrs[] = { | |
84 | ATTR_DEF_RI(OSD_ATTR_RI_VENDOR_IDENTIFICATION, 8), | |
85 | ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_IDENTIFICATION, 16), | |
86 | ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_MODEL, 32), | |
87 | ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_REVISION_LEVEL, 4), | |
88 | ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_SERIAL_NUMBER, 64 /*variable*/), | |
89 | ATTR_DEF_RI(OSD_ATTR_RI_OSD_NAME, 64 /*variable*/), | |
90 | ATTR_DEF_RI(OSD_ATTR_RI_TOTAL_CAPACITY, 8), | |
91 | ATTR_DEF_RI(OSD_ATTR_RI_USED_CAPACITY, 8), | |
92 | ATTR_DEF_RI(OSD_ATTR_RI_NUMBER_OF_PARTITIONS, 8), | |
93 | ATTR_DEF_RI(OSD_ATTR_RI_CLOCK, 6), | |
94 | /* IBM-OSD-SIM Has a bug with this one put it last */ | |
95 | ATTR_DEF_RI(OSD_ATTR_RI_OSD_SYSTEM_ID, 20), | |
96 | }; | |
97 | void *iter = NULL, *pFirst; | |
98 | int nelem = ARRAY_SIZE(get_attrs), a = 0; | |
99 | int ret; | |
100 | ||
101 | or = osd_start_request(od, GFP_KERNEL); | |
102 | if (!or) | |
103 | return -ENOMEM; | |
104 | ||
105 | /* get attrs */ | |
106 | osd_req_get_attributes(or, &osd_root_object); | |
107 | osd_req_add_get_attr_list(or, get_attrs, ARRAY_SIZE(get_attrs)); | |
108 | ||
109 | ret = osd_finalize_request(or, 0, caps, NULL); | |
110 | if (ret) | |
111 | goto out; | |
112 | ||
113 | ret = osd_execute_request(or); | |
114 | if (ret) { | |
115 | OSD_ERR("Failed to detect %s => %d\n", _osd_ver_desc(or), ret); | |
116 | goto out; | |
117 | } | |
118 | ||
119 | osd_req_decode_get_attr_list(or, get_attrs, &nelem, &iter); | |
120 | ||
121 | OSD_INFO("Detected %s device\n", | |
122 | _osd_ver_desc(or)); | |
123 | ||
124 | pFirst = get_attrs[a++].val_ptr; | |
de6b2038 | 125 | OSD_INFO("VENDOR_IDENTIFICATION [%s]\n", |
1b9dce94 BH |
126 | (char *)pFirst); |
127 | ||
128 | pFirst = get_attrs[a++].val_ptr; | |
de6b2038 | 129 | OSD_INFO("PRODUCT_IDENTIFICATION [%s]\n", |
1b9dce94 BH |
130 | (char *)pFirst); |
131 | ||
132 | pFirst = get_attrs[a++].val_ptr; | |
de6b2038 | 133 | OSD_INFO("PRODUCT_MODEL [%s]\n", |
1b9dce94 BH |
134 | (char *)pFirst); |
135 | ||
136 | pFirst = get_attrs[a++].val_ptr; | |
de6b2038 | 137 | OSD_INFO("PRODUCT_REVISION_LEVEL [%u]\n", |
97218a14 | 138 | pFirst ? get_unaligned_be32(pFirst) : ~0U); |
1b9dce94 BH |
139 | |
140 | pFirst = get_attrs[a++].val_ptr; | |
de6b2038 | 141 | OSD_INFO("PRODUCT_SERIAL_NUMBER [%s]\n", |
1b9dce94 BH |
142 | (char *)pFirst); |
143 | ||
2cdd6410 BH |
144 | odi->osdname_len = get_attrs[a].len; |
145 | /* Avoid NULL for memcmp optimization 0-length is good enough */ | |
146 | odi->osdname = kzalloc(odi->osdname_len + 1, GFP_KERNEL); | |
6d1f6621 DC |
147 | if (!odi->osdname) { |
148 | ret = -ENOMEM; | |
149 | goto out; | |
150 | } | |
2cdd6410 BH |
151 | if (odi->osdname_len) |
152 | memcpy(odi->osdname, get_attrs[a].val_ptr, odi->osdname_len); | |
153 | OSD_INFO("OSD_NAME [%s]\n", odi->osdname); | |
1b9dce94 BH |
154 | a++; |
155 | ||
156 | pFirst = get_attrs[a++].val_ptr; | |
de6b2038 | 157 | OSD_INFO("TOTAL_CAPACITY [0x%llx]\n", |
97218a14 | 158 | pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL); |
1b9dce94 BH |
159 | |
160 | pFirst = get_attrs[a++].val_ptr; | |
de6b2038 | 161 | OSD_INFO("USED_CAPACITY [0x%llx]\n", |
97218a14 | 162 | pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL); |
1b9dce94 BH |
163 | |
164 | pFirst = get_attrs[a++].val_ptr; | |
de6b2038 | 165 | OSD_INFO("NUMBER_OF_PARTITIONS [%llu]\n", |
97218a14 BH |
166 | pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL); |
167 | ||
168 | if (a >= nelem) | |
169 | goto out; | |
1b9dce94 BH |
170 | |
171 | /* FIXME: Where are the time utilities */ | |
172 | pFirst = get_attrs[a++].val_ptr; | |
9a2fcad8 | 173 | OSD_INFO("CLOCK [0x%6phN]\n", pFirst); |
1b9dce94 BH |
174 | |
175 | if (a < nelem) { /* IBM-OSD-SIM bug, Might not have it */ | |
176 | unsigned len = get_attrs[a].len; | |
177 | char sid_dump[32*4 + 2]; /* 2nibbles+space+ASCII */ | |
178 | ||
179 | hex_dump_to_buffer(get_attrs[a].val_ptr, len, 32, 1, | |
180 | sid_dump, sizeof(sid_dump), true); | |
de6b2038 BH |
181 | OSD_INFO("OSD_SYSTEM_ID(%d)\n" |
182 | " [%s]\n", len, sid_dump); | |
2cdd6410 BH |
183 | |
184 | if (unlikely(len > sizeof(odi->systemid))) { | |
185 | OSD_ERR("OSD Target error: OSD_SYSTEM_ID too long(%d). " | |
d939be3a | 186 | "device identification might not work\n", len); |
2cdd6410 BH |
187 | len = sizeof(odi->systemid); |
188 | } | |
189 | odi->systemid_len = len; | |
190 | memcpy(odi->systemid, get_attrs[a].val_ptr, len); | |
1b9dce94 BH |
191 | a++; |
192 | } | |
193 | out: | |
194 | osd_end_request(or); | |
195 | return ret; | |
196 | } | |
197 | ||
2cdd6410 BH |
198 | int osd_auto_detect_ver(struct osd_dev *od, |
199 | void *caps, struct osd_dev_info *odi) | |
1b9dce94 BH |
200 | { |
201 | int ret; | |
202 | ||
203 | /* Auto-detect the osd version */ | |
2cdd6410 | 204 | ret = _osd_get_print_system_info(od, caps, odi); |
1b9dce94 BH |
205 | if (ret) { |
206 | osd_dev_set_ver(od, OSD_VER1); | |
207 | OSD_DEBUG("converting to OSD1\n"); | |
2cdd6410 | 208 | ret = _osd_get_print_system_info(od, caps, odi); |
1b9dce94 BH |
209 | } |
210 | ||
211 | return ret; | |
212 | } | |
213 | EXPORT_SYMBOL(osd_auto_detect_ver); | |
214 | ||
02941a53 BH |
215 | static unsigned _osd_req_cdb_len(struct osd_request *or) |
216 | { | |
c6572c98 | 217 | return osd_req_is_ver1(or) ? OSDv1_TOTAL_CDB_LEN : OSD_TOTAL_CDB_LEN; |
02941a53 BH |
218 | } |
219 | ||
4ef1a3d7 BH |
220 | static unsigned _osd_req_alist_elem_size(struct osd_request *or, unsigned len) |
221 | { | |
c6572c98 BH |
222 | return osd_req_is_ver1(or) ? |
223 | osdv1_attr_list_elem_size(len) : | |
224 | osdv2_attr_list_elem_size(len); | |
4ef1a3d7 BH |
225 | } |
226 | ||
71f32e31 BH |
227 | static void _osd_req_alist_elem_encode(struct osd_request *or, |
228 | void *attr_last, const struct osd_attr *oa) | |
229 | { | |
230 | if (osd_req_is_ver1(or)) { | |
231 | struct osdv1_attributes_list_element *attr = attr_last; | |
232 | ||
233 | attr->attr_page = cpu_to_be32(oa->attr_page); | |
234 | attr->attr_id = cpu_to_be32(oa->attr_id); | |
235 | attr->attr_bytes = cpu_to_be16(oa->len); | |
236 | memcpy(attr->attr_val, oa->val_ptr, oa->len); | |
237 | } else { | |
238 | struct osdv2_attributes_list_element *attr = attr_last; | |
239 | ||
240 | attr->attr_page = cpu_to_be32(oa->attr_page); | |
241 | attr->attr_id = cpu_to_be32(oa->attr_id); | |
242 | attr->attr_bytes = cpu_to_be16(oa->len); | |
243 | memcpy(attr->attr_val, oa->val_ptr, oa->len); | |
244 | } | |
245 | } | |
246 | ||
247 | static int _osd_req_alist_elem_decode(struct osd_request *or, | |
248 | void *cur_p, struct osd_attr *oa, unsigned max_bytes) | |
249 | { | |
250 | unsigned inc; | |
251 | if (osd_req_is_ver1(or)) { | |
252 | struct osdv1_attributes_list_element *attr = cur_p; | |
253 | ||
254 | if (max_bytes < sizeof(*attr)) | |
255 | return -1; | |
256 | ||
257 | oa->len = be16_to_cpu(attr->attr_bytes); | |
258 | inc = _osd_req_alist_elem_size(or, oa->len); | |
259 | if (inc > max_bytes) | |
260 | return -1; | |
261 | ||
262 | oa->attr_page = be32_to_cpu(attr->attr_page); | |
263 | oa->attr_id = be32_to_cpu(attr->attr_id); | |
264 | ||
265 | /* OSD1: On empty attributes we return a pointer to 2 bytes | |
266 | * of zeros. This keeps similar behaviour with OSD2. | |
267 | * (See below) | |
268 | */ | |
269 | oa->val_ptr = likely(oa->len) ? attr->attr_val : | |
270 | (u8 *)&attr->attr_bytes; | |
271 | } else { | |
272 | struct osdv2_attributes_list_element *attr = cur_p; | |
273 | ||
274 | if (max_bytes < sizeof(*attr)) | |
275 | return -1; | |
276 | ||
277 | oa->len = be16_to_cpu(attr->attr_bytes); | |
278 | inc = _osd_req_alist_elem_size(or, oa->len); | |
279 | if (inc > max_bytes) | |
280 | return -1; | |
281 | ||
282 | oa->attr_page = be32_to_cpu(attr->attr_page); | |
283 | oa->attr_id = be32_to_cpu(attr->attr_id); | |
284 | ||
e9da4d7f BH |
285 | /* OSD2: For convenience, on empty attributes, we return 8 bytes |
286 | * of zeros here. This keeps the same behaviour with OSD2r04, | |
287 | * and is nice with null terminating ASCII fields. | |
288 | * oa->val_ptr == NULL marks the end-of-list, or error. | |
289 | */ | |
290 | oa->val_ptr = likely(oa->len) ? attr->attr_val : attr->reserved; | |
71f32e31 BH |
291 | } |
292 | return inc; | |
293 | } | |
294 | ||
4ef1a3d7 BH |
295 | static unsigned _osd_req_alist_size(struct osd_request *or, void *list_head) |
296 | { | |
c6572c98 BH |
297 | return osd_req_is_ver1(or) ? |
298 | osdv1_list_size(list_head) : | |
299 | osdv2_list_size(list_head); | |
4ef1a3d7 BH |
300 | } |
301 | ||
302 | static unsigned _osd_req_sizeof_alist_header(struct osd_request *or) | |
303 | { | |
c6572c98 BH |
304 | return osd_req_is_ver1(or) ? |
305 | sizeof(struct osdv1_attributes_list_header) : | |
306 | sizeof(struct osdv2_attributes_list_header); | |
4ef1a3d7 BH |
307 | } |
308 | ||
309 | static void _osd_req_set_alist_type(struct osd_request *or, | |
310 | void *list, int list_type) | |
311 | { | |
c6572c98 BH |
312 | if (osd_req_is_ver1(or)) { |
313 | struct osdv1_attributes_list_header *attr_list = list; | |
314 | ||
315 | memset(attr_list, 0, sizeof(*attr_list)); | |
316 | attr_list->type = list_type; | |
317 | } else { | |
318 | struct osdv2_attributes_list_header *attr_list = list; | |
4ef1a3d7 | 319 | |
c6572c98 BH |
320 | memset(attr_list, 0, sizeof(*attr_list)); |
321 | attr_list->type = list_type; | |
322 | } | |
4ef1a3d7 BH |
323 | } |
324 | ||
325 | static bool _osd_req_is_alist_type(struct osd_request *or, | |
326 | void *list, int list_type) | |
327 | { | |
328 | if (!list) | |
329 | return false; | |
330 | ||
c6572c98 | 331 | if (osd_req_is_ver1(or)) { |
4ef1a3d7 BH |
332 | struct osdv1_attributes_list_header *attr_list = list; |
333 | ||
c6572c98 BH |
334 | return attr_list->type == list_type; |
335 | } else { | |
336 | struct osdv2_attributes_list_header *attr_list = list; | |
337 | ||
4ef1a3d7 BH |
338 | return attr_list->type == list_type; |
339 | } | |
340 | } | |
341 | ||
3e086130 BH |
342 | /* This is for List-objects not Attributes-Lists */ |
343 | static void _osd_req_encode_olist(struct osd_request *or, | |
344 | struct osd_obj_id_list *list) | |
345 | { | |
346 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
347 | ||
c6572c98 BH |
348 | if (osd_req_is_ver1(or)) { |
349 | cdbh->v1.list_identifier = list->list_identifier; | |
350 | cdbh->v1.start_address = list->continuation_id; | |
351 | } else { | |
352 | cdbh->v2.list_identifier = list->list_identifier; | |
353 | cdbh->v2.start_address = list->continuation_id; | |
354 | } | |
3e086130 BH |
355 | } |
356 | ||
4ef1a3d7 BH |
357 | static osd_cdb_offset osd_req_encode_offset(struct osd_request *or, |
358 | u64 offset, unsigned *padding) | |
359 | { | |
360 | return __osd_encode_offset(offset, padding, | |
c6572c98 BH |
361 | osd_req_is_ver1(or) ? |
362 | OSDv1_OFFSET_MIN_SHIFT : OSD_OFFSET_MIN_SHIFT, | |
363 | OSD_OFFSET_MAX_SHIFT); | |
4ef1a3d7 BH |
364 | } |
365 | ||
345c435d BH |
366 | static struct osd_security_parameters * |
367 | _osd_req_sec_params(struct osd_request *or) | |
368 | { | |
369 | struct osd_cdb *ocdb = &or->cdb; | |
370 | ||
c6572c98 | 371 | if (osd_req_is_ver1(or)) |
f8d3a644 | 372 | return (struct osd_security_parameters *)&ocdb->v1.sec_params; |
c6572c98 | 373 | else |
f8d3a644 | 374 | return (struct osd_security_parameters *)&ocdb->v2.sec_params; |
345c435d BH |
375 | } |
376 | ||
02941a53 BH |
377 | void osd_dev_init(struct osd_dev *osdd, struct scsi_device *scsi_device) |
378 | { | |
379 | memset(osdd, 0, sizeof(*osdd)); | |
380 | osdd->scsi_device = scsi_device; | |
381 | osdd->def_timeout = BLK_DEFAULT_SG_TIMEOUT; | |
c6572c98 BH |
382 | #ifdef OSD_VER1_SUPPORT |
383 | osdd->version = OSD_VER2; | |
384 | #endif | |
02941a53 BH |
385 | /* TODO: Allocate pools for osd_request attributes ... */ |
386 | } | |
387 | EXPORT_SYMBOL(osd_dev_init); | |
388 | ||
389 | void osd_dev_fini(struct osd_dev *osdd) | |
390 | { | |
391 | /* TODO: De-allocate pools */ | |
392 | ||
393 | osdd->scsi_device = NULL; | |
394 | } | |
395 | EXPORT_SYMBOL(osd_dev_fini); | |
396 | ||
397 | static struct osd_request *_osd_request_alloc(gfp_t gfp) | |
398 | { | |
399 | struct osd_request *or; | |
400 | ||
401 | /* TODO: Use mempool with one saved request */ | |
402 | or = kzalloc(sizeof(*or), gfp); | |
403 | return or; | |
404 | } | |
405 | ||
406 | static void _osd_request_free(struct osd_request *or) | |
407 | { | |
408 | kfree(or); | |
409 | } | |
410 | ||
411 | struct osd_request *osd_start_request(struct osd_dev *dev, gfp_t gfp) | |
412 | { | |
413 | struct osd_request *or; | |
414 | ||
415 | or = _osd_request_alloc(gfp); | |
416 | if (!or) | |
417 | return NULL; | |
418 | ||
419 | or->osd_dev = dev; | |
420 | or->alloc_flags = gfp; | |
421 | or->timeout = dev->def_timeout; | |
422 | or->retries = OSD_REQ_RETRIES; | |
423 | ||
424 | return or; | |
425 | } | |
426 | EXPORT_SYMBOL(osd_start_request); | |
427 | ||
4ef1a3d7 BH |
428 | static void _osd_free_seg(struct osd_request *or __unused, |
429 | struct _osd_req_data_segment *seg) | |
430 | { | |
431 | if (!seg->buff || !seg->alloc_size) | |
432 | return; | |
433 | ||
434 | kfree(seg->buff); | |
435 | seg->buff = NULL; | |
436 | seg->alloc_size = 0; | |
437 | } | |
438 | ||
5d0961fd | 439 | static void _put_request(struct request *rq) |
8c0bacca | 440 | { |
5d0961fd BH |
441 | /* |
442 | * If osd_finalize_request() was called but the request was not | |
443 | * executed through the block layer, then we must release BIOs. | |
444 | * TODO: Keep error code in or->async_error. Need to audit all | |
445 | * code paths. | |
446 | */ | |
447 | if (unlikely(rq->bio)) | |
448 | blk_end_request(rq, -ENOMEM, blk_rq_bytes(rq)); | |
449 | else | |
450 | blk_put_request(rq); | |
8c0bacca BH |
451 | } |
452 | ||
02941a53 BH |
453 | void osd_end_request(struct osd_request *or) |
454 | { | |
455 | struct request *rq = or->request; | |
456 | ||
457 | if (rq) { | |
458 | if (rq->next_rq) { | |
5d0961fd | 459 | _put_request(rq->next_rq); |
8c0bacca | 460 | rq->next_rq = NULL; |
02941a53 BH |
461 | } |
462 | ||
5d0961fd | 463 | _put_request(rq); |
02941a53 | 464 | } |
c4df46c4 BH |
465 | |
466 | _osd_free_seg(or, &or->get_attr); | |
467 | _osd_free_seg(or, &or->enc_get_attr); | |
468 | _osd_free_seg(or, &or->set_attr); | |
e96e72c4 | 469 | _osd_free_seg(or, &or->cdb_cont); |
c4df46c4 | 470 | |
02941a53 BH |
471 | _osd_request_free(or); |
472 | } | |
473 | EXPORT_SYMBOL(osd_end_request); | |
474 | ||
5d0961fd BH |
475 | static void _set_error_resid(struct osd_request *or, struct request *req, |
476 | int error) | |
477 | { | |
478 | or->async_error = error; | |
479 | or->req_errors = req->errors ? : error; | |
480 | or->sense_len = req->sense_len; | |
481 | if (or->out.req) | |
482 | or->out.residual = or->out.req->resid_len; | |
483 | if (or->in.req) | |
484 | or->in.residual = or->in.req->resid_len; | |
485 | } | |
486 | ||
02941a53 BH |
487 | int osd_execute_request(struct osd_request *or) |
488 | { | |
5d0961fd BH |
489 | int error = blk_execute_rq(or->request->q, NULL, or->request, 0); |
490 | ||
491 | _set_error_resid(or, or->request, error); | |
492 | return error; | |
02941a53 BH |
493 | } |
494 | EXPORT_SYMBOL(osd_execute_request); | |
495 | ||
496 | static void osd_request_async_done(struct request *req, int error) | |
497 | { | |
498 | struct osd_request *or = req->end_io_data; | |
499 | ||
5d0961fd BH |
500 | _set_error_resid(or, req, error); |
501 | if (req->next_rq) { | |
502 | __blk_put_request(req->q, req->next_rq); | |
503 | req->next_rq = NULL; | |
aa9fffbe | 504 | } |
02941a53 | 505 | |
5d0961fd BH |
506 | __blk_put_request(req->q, req); |
507 | or->request = NULL; | |
508 | or->in.req = NULL; | |
509 | or->out.req = NULL; | |
510 | ||
02941a53 BH |
511 | if (or->async_done) |
512 | or->async_done(or, or->async_private); | |
513 | else | |
514 | osd_end_request(or); | |
515 | } | |
516 | ||
517 | int osd_execute_request_async(struct osd_request *or, | |
518 | osd_req_done_fn *done, void *private) | |
519 | { | |
520 | or->request->end_io_data = or; | |
521 | or->async_private = private; | |
522 | or->async_done = done; | |
523 | ||
524 | blk_execute_rq_nowait(or->request->q, NULL, or->request, 0, | |
525 | osd_request_async_done); | |
526 | return 0; | |
527 | } | |
528 | EXPORT_SYMBOL(osd_execute_request_async); | |
529 | ||
4ef1a3d7 BH |
530 | u8 sg_out_pad_buffer[1 << OSDv1_OFFSET_MIN_SHIFT]; |
531 | u8 sg_in_pad_buffer[1 << OSDv1_OFFSET_MIN_SHIFT]; | |
532 | ||
533 | static int _osd_realloc_seg(struct osd_request *or, | |
534 | struct _osd_req_data_segment *seg, unsigned max_bytes) | |
535 | { | |
536 | void *buff; | |
537 | ||
538 | if (seg->alloc_size >= max_bytes) | |
539 | return 0; | |
540 | ||
541 | buff = krealloc(seg->buff, max_bytes, or->alloc_flags); | |
542 | if (!buff) { | |
543 | OSD_ERR("Failed to Realloc %d-bytes was-%d\n", max_bytes, | |
544 | seg->alloc_size); | |
545 | return -ENOMEM; | |
546 | } | |
547 | ||
548 | memset(buff + seg->alloc_size, 0, max_bytes - seg->alloc_size); | |
549 | seg->buff = buff; | |
550 | seg->alloc_size = max_bytes; | |
551 | return 0; | |
552 | } | |
553 | ||
e96e72c4 BH |
554 | static int _alloc_cdb_cont(struct osd_request *or, unsigned total_bytes) |
555 | { | |
556 | OSD_DEBUG("total_bytes=%d\n", total_bytes); | |
557 | return _osd_realloc_seg(or, &or->cdb_cont, total_bytes); | |
558 | } | |
559 | ||
4ef1a3d7 BH |
560 | static int _alloc_set_attr_list(struct osd_request *or, |
561 | const struct osd_attr *oa, unsigned nelem, unsigned add_bytes) | |
562 | { | |
563 | unsigned total_bytes = add_bytes; | |
564 | ||
565 | for (; nelem; --nelem, ++oa) | |
566 | total_bytes += _osd_req_alist_elem_size(or, oa->len); | |
567 | ||
568 | OSD_DEBUG("total_bytes=%d\n", total_bytes); | |
569 | return _osd_realloc_seg(or, &or->set_attr, total_bytes); | |
570 | } | |
571 | ||
572 | static int _alloc_get_attr_desc(struct osd_request *or, unsigned max_bytes) | |
573 | { | |
574 | OSD_DEBUG("total_bytes=%d\n", max_bytes); | |
575 | return _osd_realloc_seg(or, &or->enc_get_attr, max_bytes); | |
576 | } | |
577 | ||
578 | static int _alloc_get_attr_list(struct osd_request *or) | |
579 | { | |
580 | OSD_DEBUG("total_bytes=%d\n", or->get_attr.total_bytes); | |
581 | return _osd_realloc_seg(or, &or->get_attr, or->get_attr.total_bytes); | |
582 | } | |
583 | ||
02941a53 BH |
584 | /* |
585 | * Common to all OSD commands | |
586 | */ | |
587 | ||
588 | static void _osdv1_req_encode_common(struct osd_request *or, | |
589 | __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len) | |
590 | { | |
591 | struct osdv1_cdb *ocdb = &or->cdb.v1; | |
592 | ||
593 | /* | |
594 | * For speed, the commands | |
595 | * OSD_ACT_PERFORM_SCSI_COMMAND , V1 0x8F7E, V2 0x8F7C | |
596 | * OSD_ACT_SCSI_TASK_MANAGEMENT , V1 0x8F7F, V2 0x8F7D | |
597 | * are not supported here. Should pass zero and set after the call | |
598 | */ | |
599 | act &= cpu_to_be16(~0x0080); /* V1 action code */ | |
600 | ||
601 | OSD_DEBUG("OSDv1 execute opcode 0x%x\n", be16_to_cpu(act)); | |
602 | ||
603 | ocdb->h.varlen_cdb.opcode = VARIABLE_LENGTH_CMD; | |
604 | ocdb->h.varlen_cdb.additional_cdb_length = OSD_ADDITIONAL_CDB_LENGTH; | |
605 | ocdb->h.varlen_cdb.service_action = act; | |
606 | ||
607 | ocdb->h.partition = cpu_to_be64(obj->partition); | |
608 | ocdb->h.object = cpu_to_be64(obj->id); | |
609 | ocdb->h.v1.length = cpu_to_be64(len); | |
610 | ocdb->h.v1.start_address = cpu_to_be64(offset); | |
611 | } | |
612 | ||
c6572c98 BH |
613 | static void _osdv2_req_encode_common(struct osd_request *or, |
614 | __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len) | |
615 | { | |
616 | struct osdv2_cdb *ocdb = &or->cdb.v2; | |
617 | ||
618 | OSD_DEBUG("OSDv2 execute opcode 0x%x\n", be16_to_cpu(act)); | |
619 | ||
620 | ocdb->h.varlen_cdb.opcode = VARIABLE_LENGTH_CMD; | |
621 | ocdb->h.varlen_cdb.additional_cdb_length = OSD_ADDITIONAL_CDB_LENGTH; | |
622 | ocdb->h.varlen_cdb.service_action = act; | |
623 | ||
624 | ocdb->h.partition = cpu_to_be64(obj->partition); | |
625 | ocdb->h.object = cpu_to_be64(obj->id); | |
626 | ocdb->h.v2.length = cpu_to_be64(len); | |
627 | ocdb->h.v2.start_address = cpu_to_be64(offset); | |
628 | } | |
629 | ||
02941a53 BH |
630 | static void _osd_req_encode_common(struct osd_request *or, |
631 | __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len) | |
632 | { | |
c6572c98 BH |
633 | if (osd_req_is_ver1(or)) |
634 | _osdv1_req_encode_common(or, act, obj, offset, len); | |
635 | else | |
636 | _osdv2_req_encode_common(or, act, obj, offset, len); | |
02941a53 BH |
637 | } |
638 | ||
639 | /* | |
640 | * Device commands | |
641 | */ | |
ae30c994 BH |
642 | /*TODO: void osd_req_set_master_seed_xchg(struct osd_request *, ...); */ |
643 | /*TODO: void osd_req_set_master_key(struct osd_request *, ...); */ | |
644 | ||
02941a53 BH |
645 | void osd_req_format(struct osd_request *or, u64 tot_capacity) |
646 | { | |
647 | _osd_req_encode_common(or, OSD_ACT_FORMAT_OSD, &osd_root_object, 0, | |
648 | tot_capacity); | |
649 | } | |
650 | EXPORT_SYMBOL(osd_req_format); | |
651 | ||
3e086130 BH |
652 | int osd_req_list_dev_partitions(struct osd_request *or, |
653 | osd_id initial_id, struct osd_obj_id_list *list, unsigned nelem) | |
654 | { | |
655 | return osd_req_list_partition_objects(or, 0, initial_id, list, nelem); | |
656 | } | |
657 | EXPORT_SYMBOL(osd_req_list_dev_partitions); | |
658 | ||
659 | static void _osd_req_encode_flush(struct osd_request *or, | |
660 | enum osd_options_flush_scope_values op) | |
661 | { | |
662 | struct osd_cdb_head *ocdb = osd_cdb_head(&or->cdb); | |
663 | ||
664 | ocdb->command_specific_options = op; | |
665 | } | |
666 | ||
667 | void osd_req_flush_obsd(struct osd_request *or, | |
668 | enum osd_options_flush_scope_values op) | |
669 | { | |
670 | _osd_req_encode_common(or, OSD_ACT_FLUSH_OSD, &osd_root_object, 0, 0); | |
671 | _osd_req_encode_flush(or, op); | |
672 | } | |
673 | EXPORT_SYMBOL(osd_req_flush_obsd); | |
674 | ||
ae30c994 BH |
675 | /*TODO: void osd_req_perform_scsi_command(struct osd_request *, |
676 | const u8 *cdb, ...); */ | |
677 | /*TODO: void osd_req_task_management(struct osd_request *, ...); */ | |
678 | ||
02941a53 BH |
679 | /* |
680 | * Partition commands | |
681 | */ | |
682 | static void _osd_req_encode_partition(struct osd_request *or, | |
683 | __be16 act, osd_id partition) | |
684 | { | |
685 | struct osd_obj_id par = { | |
686 | .partition = partition, | |
687 | .id = 0, | |
688 | }; | |
689 | ||
690 | _osd_req_encode_common(or, act, &par, 0, 0); | |
691 | } | |
692 | ||
693 | void osd_req_create_partition(struct osd_request *or, osd_id partition) | |
694 | { | |
695 | _osd_req_encode_partition(or, OSD_ACT_CREATE_PARTITION, partition); | |
696 | } | |
697 | EXPORT_SYMBOL(osd_req_create_partition); | |
698 | ||
699 | void osd_req_remove_partition(struct osd_request *or, osd_id partition) | |
700 | { | |
701 | _osd_req_encode_partition(or, OSD_ACT_REMOVE_PARTITION, partition); | |
702 | } | |
703 | EXPORT_SYMBOL(osd_req_remove_partition); | |
704 | ||
ae30c994 BH |
705 | /*TODO: void osd_req_set_partition_key(struct osd_request *, |
706 | osd_id partition, u8 new_key_id[OSD_CRYPTO_KEYID_SIZE], | |
707 | u8 seed[OSD_CRYPTO_SEED_SIZE]); */ | |
708 | ||
3e086130 BH |
709 | static int _osd_req_list_objects(struct osd_request *or, |
710 | __be16 action, const struct osd_obj_id *obj, osd_id initial_id, | |
711 | struct osd_obj_id_list *list, unsigned nelem) | |
712 | { | |
fc2fac5b | 713 | struct request_queue *q = osd_request_queue(or->osd_dev); |
3e086130 BH |
714 | u64 len = nelem * sizeof(osd_id) + sizeof(*list); |
715 | struct bio *bio; | |
716 | ||
717 | _osd_req_encode_common(or, action, obj, (u64)initial_id, len); | |
718 | ||
719 | if (list->list_identifier) | |
720 | _osd_req_encode_olist(or, list); | |
721 | ||
722 | WARN_ON(or->in.bio); | |
723 | bio = bio_map_kern(q, list, len, or->alloc_flags); | |
bf5e84f6 | 724 | if (IS_ERR(bio)) { |
3e086130 | 725 | OSD_ERR("!!! Failed to allocate list_objects BIO\n"); |
bf5e84f6 | 726 | return PTR_ERR(bio); |
3e086130 BH |
727 | } |
728 | ||
7b6d91da | 729 | bio->bi_rw &= ~REQ_WRITE; |
3e086130 | 730 | or->in.bio = bio; |
4f024f37 | 731 | or->in.total_bytes = bio->bi_iter.bi_size; |
3e086130 BH |
732 | return 0; |
733 | } | |
734 | ||
735 | int osd_req_list_partition_collections(struct osd_request *or, | |
736 | osd_id partition, osd_id initial_id, struct osd_obj_id_list *list, | |
737 | unsigned nelem) | |
738 | { | |
739 | struct osd_obj_id par = { | |
740 | .partition = partition, | |
741 | .id = 0, | |
742 | }; | |
743 | ||
744 | return osd_req_list_collection_objects(or, &par, initial_id, list, | |
745 | nelem); | |
746 | } | |
747 | EXPORT_SYMBOL(osd_req_list_partition_collections); | |
748 | ||
749 | int osd_req_list_partition_objects(struct osd_request *or, | |
750 | osd_id partition, osd_id initial_id, struct osd_obj_id_list *list, | |
751 | unsigned nelem) | |
752 | { | |
753 | struct osd_obj_id par = { | |
754 | .partition = partition, | |
755 | .id = 0, | |
756 | }; | |
757 | ||
758 | return _osd_req_list_objects(or, OSD_ACT_LIST, &par, initial_id, list, | |
759 | nelem); | |
760 | } | |
761 | EXPORT_SYMBOL(osd_req_list_partition_objects); | |
762 | ||
763 | void osd_req_flush_partition(struct osd_request *or, | |
764 | osd_id partition, enum osd_options_flush_scope_values op) | |
765 | { | |
766 | _osd_req_encode_partition(or, OSD_ACT_FLUSH_PARTITION, partition); | |
767 | _osd_req_encode_flush(or, op); | |
768 | } | |
769 | EXPORT_SYMBOL(osd_req_flush_partition); | |
770 | ||
771 | /* | |
772 | * Collection commands | |
773 | */ | |
ae30c994 BH |
774 | /*TODO: void osd_req_create_collection(struct osd_request *, |
775 | const struct osd_obj_id *); */ | |
776 | /*TODO: void osd_req_remove_collection(struct osd_request *, | |
777 | const struct osd_obj_id *); */ | |
778 | ||
3e086130 BH |
779 | int osd_req_list_collection_objects(struct osd_request *or, |
780 | const struct osd_obj_id *obj, osd_id initial_id, | |
781 | struct osd_obj_id_list *list, unsigned nelem) | |
782 | { | |
783 | return _osd_req_list_objects(or, OSD_ACT_LIST_COLLECTION, obj, | |
784 | initial_id, list, nelem); | |
785 | } | |
786 | EXPORT_SYMBOL(osd_req_list_collection_objects); | |
787 | ||
ae30c994 BH |
788 | /*TODO: void query(struct osd_request *, ...); V2 */ |
789 | ||
3e086130 BH |
790 | void osd_req_flush_collection(struct osd_request *or, |
791 | const struct osd_obj_id *obj, enum osd_options_flush_scope_values op) | |
792 | { | |
793 | _osd_req_encode_common(or, OSD_ACT_FLUSH_PARTITION, obj, 0, 0); | |
794 | _osd_req_encode_flush(or, op); | |
795 | } | |
796 | EXPORT_SYMBOL(osd_req_flush_collection); | |
797 | ||
ae30c994 BH |
798 | /*TODO: void get_member_attrs(struct osd_request *, ...); V2 */ |
799 | /*TODO: void set_member_attrs(struct osd_request *, ...); V2 */ | |
800 | ||
02941a53 BH |
801 | /* |
802 | * Object commands | |
803 | */ | |
804 | void osd_req_create_object(struct osd_request *or, struct osd_obj_id *obj) | |
805 | { | |
806 | _osd_req_encode_common(or, OSD_ACT_CREATE, obj, 0, 0); | |
807 | } | |
808 | EXPORT_SYMBOL(osd_req_create_object); | |
809 | ||
810 | void osd_req_remove_object(struct osd_request *or, struct osd_obj_id *obj) | |
811 | { | |
812 | _osd_req_encode_common(or, OSD_ACT_REMOVE, obj, 0, 0); | |
813 | } | |
814 | EXPORT_SYMBOL(osd_req_remove_object); | |
815 | ||
ae30c994 BH |
816 | |
817 | /*TODO: void osd_req_create_multi(struct osd_request *or, | |
818 | struct osd_obj_id *first, struct osd_obj_id_list *list, unsigned nelem); | |
819 | */ | |
820 | ||
02941a53 | 821 | void osd_req_write(struct osd_request *or, |
62f469b5 BH |
822 | const struct osd_obj_id *obj, u64 offset, |
823 | struct bio *bio, u64 len) | |
02941a53 | 824 | { |
62f469b5 | 825 | _osd_req_encode_common(or, OSD_ACT_WRITE, obj, offset, len); |
02941a53 | 826 | WARN_ON(or->out.bio || or->out.total_bytes); |
7b6d91da | 827 | WARN_ON(0 == (bio->bi_rw & REQ_WRITE)); |
02941a53 | 828 | or->out.bio = bio; |
62f469b5 | 829 | or->out.total_bytes = len; |
02941a53 BH |
830 | } |
831 | EXPORT_SYMBOL(osd_req_write); | |
832 | ||
0e35afbc BH |
833 | int osd_req_write_kern(struct osd_request *or, |
834 | const struct osd_obj_id *obj, u64 offset, void* buff, u64 len) | |
835 | { | |
fc2fac5b | 836 | struct request_queue *req_q = osd_request_queue(or->osd_dev); |
0e35afbc BH |
837 | struct bio *bio = bio_map_kern(req_q, buff, len, GFP_KERNEL); |
838 | ||
839 | if (IS_ERR(bio)) | |
840 | return PTR_ERR(bio); | |
841 | ||
7b6d91da | 842 | bio->bi_rw |= REQ_WRITE; /* FIXME: bio_set_dir() */ |
62f469b5 | 843 | osd_req_write(or, obj, offset, bio, len); |
0e35afbc BH |
844 | return 0; |
845 | } | |
846 | EXPORT_SYMBOL(osd_req_write_kern); | |
847 | ||
ae30c994 BH |
848 | /*TODO: void osd_req_append(struct osd_request *, |
849 | const struct osd_obj_id *, struct bio *data_out); */ | |
850 | /*TODO: void osd_req_create_write(struct osd_request *, | |
851 | const struct osd_obj_id *, struct bio *data_out, u64 offset); */ | |
852 | /*TODO: void osd_req_clear(struct osd_request *, | |
853 | const struct osd_obj_id *, u64 offset, u64 len); */ | |
854 | /*TODO: void osd_req_punch(struct osd_request *, | |
855 | const struct osd_obj_id *, u64 offset, u64 len); V2 */ | |
856 | ||
3e086130 BH |
857 | void osd_req_flush_object(struct osd_request *or, |
858 | const struct osd_obj_id *obj, enum osd_options_flush_scope_values op, | |
859 | /*V2*/ u64 offset, /*V2*/ u64 len) | |
860 | { | |
c6572c98 BH |
861 | if (unlikely(osd_req_is_ver1(or) && (offset || len))) { |
862 | OSD_DEBUG("OSD Ver1 flush on specific range ignored\n"); | |
863 | offset = 0; | |
864 | len = 0; | |
865 | } | |
866 | ||
3e086130 BH |
867 | _osd_req_encode_common(or, OSD_ACT_FLUSH, obj, offset, len); |
868 | _osd_req_encode_flush(or, op); | |
869 | } | |
870 | EXPORT_SYMBOL(osd_req_flush_object); | |
871 | ||
02941a53 | 872 | void osd_req_read(struct osd_request *or, |
62f469b5 BH |
873 | const struct osd_obj_id *obj, u64 offset, |
874 | struct bio *bio, u64 len) | |
02941a53 | 875 | { |
62f469b5 | 876 | _osd_req_encode_common(or, OSD_ACT_READ, obj, offset, len); |
02941a53 | 877 | WARN_ON(or->in.bio || or->in.total_bytes); |
d842a93c | 878 | WARN_ON(bio->bi_rw & REQ_WRITE); |
02941a53 | 879 | or->in.bio = bio; |
62f469b5 | 880 | or->in.total_bytes = len; |
02941a53 BH |
881 | } |
882 | EXPORT_SYMBOL(osd_req_read); | |
883 | ||
0e35afbc BH |
884 | int osd_req_read_kern(struct osd_request *or, |
885 | const struct osd_obj_id *obj, u64 offset, void* buff, u64 len) | |
886 | { | |
fc2fac5b | 887 | struct request_queue *req_q = osd_request_queue(or->osd_dev); |
0e35afbc BH |
888 | struct bio *bio = bio_map_kern(req_q, buff, len, GFP_KERNEL); |
889 | ||
890 | if (IS_ERR(bio)) | |
891 | return PTR_ERR(bio); | |
892 | ||
62f469b5 | 893 | osd_req_read(or, obj, offset, bio, len); |
0e35afbc BH |
894 | return 0; |
895 | } | |
896 | EXPORT_SYMBOL(osd_req_read_kern); | |
897 | ||
e96e72c4 BH |
898 | static int _add_sg_continuation_descriptor(struct osd_request *or, |
899 | const struct osd_sg_entry *sglist, unsigned numentries, u64 *len) | |
900 | { | |
901 | struct osd_sg_continuation_descriptor *oscd; | |
902 | u32 oscd_size; | |
903 | unsigned i; | |
904 | int ret; | |
905 | ||
906 | oscd_size = sizeof(*oscd) + numentries * sizeof(oscd->entries[0]); | |
907 | ||
908 | if (!or->cdb_cont.total_bytes) { | |
909 | /* First time, jump over the header, we will write to: | |
910 | * cdb_cont.buff + cdb_cont.total_bytes | |
911 | */ | |
912 | or->cdb_cont.total_bytes = | |
913 | sizeof(struct osd_continuation_segment_header); | |
914 | } | |
915 | ||
916 | ret = _alloc_cdb_cont(or, or->cdb_cont.total_bytes + oscd_size); | |
917 | if (unlikely(ret)) | |
918 | return ret; | |
919 | ||
920 | oscd = or->cdb_cont.buff + or->cdb_cont.total_bytes; | |
921 | oscd->hdr.type = cpu_to_be16(SCATTER_GATHER_LIST); | |
922 | oscd->hdr.pad_length = 0; | |
923 | oscd->hdr.length = cpu_to_be32(oscd_size - sizeof(*oscd)); | |
924 | ||
925 | *len = 0; | |
926 | /* copy the sg entries and convert to network byte order */ | |
927 | for (i = 0; i < numentries; i++) { | |
928 | oscd->entries[i].offset = cpu_to_be64(sglist[i].offset); | |
929 | oscd->entries[i].len = cpu_to_be64(sglist[i].len); | |
930 | *len += sglist[i].len; | |
931 | } | |
932 | ||
933 | or->cdb_cont.total_bytes += oscd_size; | |
934 | OSD_DEBUG("total_bytes=%d oscd_size=%d numentries=%d\n", | |
935 | or->cdb_cont.total_bytes, oscd_size, numentries); | |
936 | return 0; | |
937 | } | |
938 | ||
939 | static int _osd_req_finalize_cdb_cont(struct osd_request *or, const u8 *cap_key) | |
940 | { | |
941 | struct request_queue *req_q = osd_request_queue(or->osd_dev); | |
942 | struct bio *bio; | |
943 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
944 | struct osd_continuation_segment_header *cont_seg_hdr; | |
945 | ||
946 | if (!or->cdb_cont.total_bytes) | |
947 | return 0; | |
948 | ||
949 | cont_seg_hdr = or->cdb_cont.buff; | |
950 | cont_seg_hdr->format = CDB_CONTINUATION_FORMAT_V2; | |
951 | cont_seg_hdr->service_action = cdbh->varlen_cdb.service_action; | |
952 | ||
953 | /* create a bio for continuation segment */ | |
954 | bio = bio_map_kern(req_q, or->cdb_cont.buff, or->cdb_cont.total_bytes, | |
955 | GFP_KERNEL); | |
057f02a3 DC |
956 | if (IS_ERR(bio)) |
957 | return PTR_ERR(bio); | |
e96e72c4 BH |
958 | |
959 | bio->bi_rw |= REQ_WRITE; | |
960 | ||
961 | /* integrity check the continuation before the bio is linked | |
962 | * with the other data segments since the continuation | |
963 | * integrity is separate from the other data segments. | |
964 | */ | |
965 | osd_sec_sign_data(cont_seg_hdr->integrity_check, bio, cap_key); | |
966 | ||
967 | cdbh->v2.cdb_continuation_length = cpu_to_be32(or->cdb_cont.total_bytes); | |
968 | ||
969 | /* we can't use _req_append_segment, because we need to link in the | |
970 | * continuation bio to the head of the bio list - the | |
971 | * continuation segment (if it exists) is always the first segment in | |
972 | * the out data buffer. | |
973 | */ | |
974 | bio->bi_next = or->out.bio; | |
975 | or->out.bio = bio; | |
976 | or->out.total_bytes += or->cdb_cont.total_bytes; | |
977 | ||
978 | return 0; | |
979 | } | |
980 | ||
981 | /* osd_req_write_sg: Takes a @bio that points to the data out buffer and an | |
982 | * @sglist that has the scatter gather entries. Scatter-gather enables a write | |
983 | * of multiple none-contiguous areas of an object, in a single call. The extents | |
984 | * may overlap and/or be in any order. The only constrain is that: | |
985 | * total_bytes(sglist) >= total_bytes(bio) | |
986 | */ | |
987 | int osd_req_write_sg(struct osd_request *or, | |
988 | const struct osd_obj_id *obj, struct bio *bio, | |
989 | const struct osd_sg_entry *sglist, unsigned numentries) | |
990 | { | |
991 | u64 len; | |
992 | int ret = _add_sg_continuation_descriptor(or, sglist, numentries, &len); | |
993 | ||
994 | if (ret) | |
995 | return ret; | |
996 | osd_req_write(or, obj, 0, bio, len); | |
997 | ||
998 | return 0; | |
999 | } | |
1000 | EXPORT_SYMBOL(osd_req_write_sg); | |
1001 | ||
1002 | /* osd_req_read_sg: Read multiple extents of an object into @bio | |
1003 | * See osd_req_write_sg | |
1004 | */ | |
1005 | int osd_req_read_sg(struct osd_request *or, | |
1006 | const struct osd_obj_id *obj, struct bio *bio, | |
1007 | const struct osd_sg_entry *sglist, unsigned numentries) | |
1008 | { | |
1009 | u64 len; | |
4977c825 BH |
1010 | u64 off; |
1011 | int ret; | |
e96e72c4 | 1012 | |
4977c825 BH |
1013 | if (numentries > 1) { |
1014 | off = 0; | |
1015 | ret = _add_sg_continuation_descriptor(or, sglist, numentries, | |
1016 | &len); | |
1017 | if (ret) | |
1018 | return ret; | |
1019 | } else { | |
1020 | /* Optimize the case of single segment, read_sg is a | |
1021 | * bidi operation. | |
1022 | */ | |
1023 | len = sglist->len; | |
1024 | off = sglist->offset; | |
1025 | } | |
1026 | osd_req_read(or, obj, off, bio, len); | |
e96e72c4 BH |
1027 | |
1028 | return 0; | |
1029 | } | |
1030 | EXPORT_SYMBOL(osd_req_read_sg); | |
1031 | ||
6dd1d8a7 BH |
1032 | /* SG-list write/read Kern API |
1033 | * | |
1034 | * osd_req_{write,read}_sg_kern takes an array of @buff pointers and an array | |
1035 | * of sg_entries. @numentries indicates how many pointers and sg_entries there | |
1036 | * are. By requiring an array of buff pointers. This allows a caller to do a | |
1037 | * single write/read and scatter into multiple buffers. | |
1038 | * NOTE: Each buffer + len should not cross a page boundary. | |
1039 | */ | |
1040 | static struct bio *_create_sg_bios(struct osd_request *or, | |
1041 | void **buff, const struct osd_sg_entry *sglist, unsigned numentries) | |
1042 | { | |
1043 | struct request_queue *q = osd_request_queue(or->osd_dev); | |
1044 | struct bio *bio; | |
1045 | unsigned i; | |
1046 | ||
1047 | bio = bio_kmalloc(GFP_KERNEL, numentries); | |
1048 | if (unlikely(!bio)) { | |
1051e9b3 | 1049 | OSD_DEBUG("Failed to allocate BIO size=%u\n", numentries); |
6dd1d8a7 BH |
1050 | return ERR_PTR(-ENOMEM); |
1051 | } | |
1052 | ||
1053 | for (i = 0; i < numentries; i++) { | |
1054 | unsigned offset = offset_in_page(buff[i]); | |
1055 | struct page *page = virt_to_page(buff[i]); | |
1056 | unsigned len = sglist[i].len; | |
1057 | unsigned added_len; | |
1058 | ||
1059 | BUG_ON(offset + len > PAGE_SIZE); | |
1060 | added_len = bio_add_pc_page(q, bio, page, len, offset); | |
1061 | if (unlikely(len != added_len)) { | |
1062 | OSD_DEBUG("bio_add_pc_page len(%d) != added_len(%d)\n", | |
1063 | len, added_len); | |
1064 | bio_put(bio); | |
1065 | return ERR_PTR(-ENOMEM); | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | return bio; | |
1070 | } | |
1071 | ||
1072 | int osd_req_write_sg_kern(struct osd_request *or, | |
1073 | const struct osd_obj_id *obj, void **buff, | |
1074 | const struct osd_sg_entry *sglist, unsigned numentries) | |
1075 | { | |
1076 | struct bio *bio = _create_sg_bios(or, buff, sglist, numentries); | |
1077 | if (IS_ERR(bio)) | |
1078 | return PTR_ERR(bio); | |
1079 | ||
1080 | bio->bi_rw |= REQ_WRITE; | |
1081 | osd_req_write_sg(or, obj, bio, sglist, numentries); | |
1082 | ||
1083 | return 0; | |
1084 | } | |
1085 | EXPORT_SYMBOL(osd_req_write_sg_kern); | |
1086 | ||
1087 | int osd_req_read_sg_kern(struct osd_request *or, | |
1088 | const struct osd_obj_id *obj, void **buff, | |
1089 | const struct osd_sg_entry *sglist, unsigned numentries) | |
1090 | { | |
1091 | struct bio *bio = _create_sg_bios(or, buff, sglist, numentries); | |
1092 | if (IS_ERR(bio)) | |
1093 | return PTR_ERR(bio); | |
1094 | ||
1095 | osd_req_read_sg(or, obj, bio, sglist, numentries); | |
1096 | ||
1097 | return 0; | |
1098 | } | |
1099 | EXPORT_SYMBOL(osd_req_read_sg_kern); | |
1100 | ||
1101 | ||
1102 | ||
4ef1a3d7 BH |
1103 | void osd_req_get_attributes(struct osd_request *or, |
1104 | const struct osd_obj_id *obj) | |
1105 | { | |
1106 | _osd_req_encode_common(or, OSD_ACT_GET_ATTRIBUTES, obj, 0, 0); | |
1107 | } | |
1108 | EXPORT_SYMBOL(osd_req_get_attributes); | |
1109 | ||
1110 | void osd_req_set_attributes(struct osd_request *or, | |
1111 | const struct osd_obj_id *obj) | |
1112 | { | |
1113 | _osd_req_encode_common(or, OSD_ACT_SET_ATTRIBUTES, obj, 0, 0); | |
1114 | } | |
1115 | EXPORT_SYMBOL(osd_req_set_attributes); | |
1116 | ||
1117 | /* | |
1118 | * Attributes List-mode | |
1119 | */ | |
1120 | ||
1121 | int osd_req_add_set_attr_list(struct osd_request *or, | |
1122 | const struct osd_attr *oa, unsigned nelem) | |
1123 | { | |
1124 | unsigned total_bytes = or->set_attr.total_bytes; | |
1125 | void *attr_last; | |
1126 | int ret; | |
1127 | ||
1128 | if (or->attributes_mode && | |
1129 | or->attributes_mode != OSD_CDB_GET_SET_ATTR_LISTS) { | |
1130 | WARN_ON(1); | |
1131 | return -EINVAL; | |
1132 | } | |
1133 | or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS; | |
1134 | ||
1135 | if (!total_bytes) { /* first-time: allocate and put list header */ | |
1136 | total_bytes = _osd_req_sizeof_alist_header(or); | |
1137 | ret = _alloc_set_attr_list(or, oa, nelem, total_bytes); | |
1138 | if (ret) | |
1139 | return ret; | |
1140 | _osd_req_set_alist_type(or, or->set_attr.buff, | |
1141 | OSD_ATTR_LIST_SET_RETRIEVE); | |
1142 | } | |
1143 | attr_last = or->set_attr.buff + total_bytes; | |
1144 | ||
1145 | for (; nelem; --nelem) { | |
4ef1a3d7 BH |
1146 | unsigned elem_size = _osd_req_alist_elem_size(or, oa->len); |
1147 | ||
1148 | total_bytes += elem_size; | |
1149 | if (unlikely(or->set_attr.alloc_size < total_bytes)) { | |
1150 | or->set_attr.total_bytes = total_bytes - elem_size; | |
1151 | ret = _alloc_set_attr_list(or, oa, nelem, total_bytes); | |
1152 | if (ret) | |
1153 | return ret; | |
1154 | attr_last = | |
1155 | or->set_attr.buff + or->set_attr.total_bytes; | |
1156 | } | |
1157 | ||
71f32e31 | 1158 | _osd_req_alist_elem_encode(or, attr_last, oa); |
4ef1a3d7 BH |
1159 | |
1160 | attr_last += elem_size; | |
1161 | ++oa; | |
1162 | } | |
1163 | ||
1164 | or->set_attr.total_bytes = total_bytes; | |
1165 | return 0; | |
1166 | } | |
1167 | EXPORT_SYMBOL(osd_req_add_set_attr_list); | |
1168 | ||
4ef1a3d7 BH |
1169 | static int _req_append_segment(struct osd_request *or, |
1170 | unsigned padding, struct _osd_req_data_segment *seg, | |
1171 | struct _osd_req_data_segment *last_seg, struct _osd_io_info *io) | |
1172 | { | |
1173 | void *pad_buff; | |
1174 | int ret; | |
1175 | ||
1176 | if (padding) { | |
1177 | /* check if we can just add it to last buffer */ | |
1178 | if (last_seg && | |
1179 | (padding <= last_seg->alloc_size - last_seg->total_bytes)) | |
1180 | pad_buff = last_seg->buff + last_seg->total_bytes; | |
1181 | else | |
1182 | pad_buff = io->pad_buff; | |
1183 | ||
bc38bf10 | 1184 | ret = blk_rq_map_kern(io->req->q, io->req, pad_buff, padding, |
4ef1a3d7 BH |
1185 | or->alloc_flags); |
1186 | if (ret) | |
1187 | return ret; | |
1188 | io->total_bytes += padding; | |
1189 | } | |
1190 | ||
bc38bf10 | 1191 | ret = blk_rq_map_kern(io->req->q, io->req, seg->buff, seg->total_bytes, |
4ef1a3d7 BH |
1192 | or->alloc_flags); |
1193 | if (ret) | |
1194 | return ret; | |
1195 | ||
1196 | io->total_bytes += seg->total_bytes; | |
1197 | OSD_DEBUG("padding=%d buff=%p total_bytes=%d\n", padding, seg->buff, | |
1198 | seg->total_bytes); | |
1199 | return 0; | |
1200 | } | |
1201 | ||
1202 | static int _osd_req_finalize_set_attr_list(struct osd_request *or) | |
1203 | { | |
1204 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
1205 | unsigned padding; | |
1206 | int ret; | |
1207 | ||
1208 | if (!or->set_attr.total_bytes) { | |
1209 | cdbh->attrs_list.set_attr_offset = OSD_OFFSET_UNUSED; | |
1210 | return 0; | |
1211 | } | |
1212 | ||
1213 | cdbh->attrs_list.set_attr_bytes = cpu_to_be32(or->set_attr.total_bytes); | |
1214 | cdbh->attrs_list.set_attr_offset = | |
1215 | osd_req_encode_offset(or, or->out.total_bytes, &padding); | |
1216 | ||
1217 | ret = _req_append_segment(or, padding, &or->set_attr, | |
1218 | or->out.last_seg, &or->out); | |
1219 | if (ret) | |
1220 | return ret; | |
1221 | ||
1222 | or->out.last_seg = &or->set_attr; | |
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | int osd_req_add_get_attr_list(struct osd_request *or, | |
1227 | const struct osd_attr *oa, unsigned nelem) | |
1228 | { | |
1229 | unsigned total_bytes = or->enc_get_attr.total_bytes; | |
1230 | void *attr_last; | |
1231 | int ret; | |
1232 | ||
1233 | if (or->attributes_mode && | |
1234 | or->attributes_mode != OSD_CDB_GET_SET_ATTR_LISTS) { | |
1235 | WARN_ON(1); | |
1236 | return -EINVAL; | |
1237 | } | |
1238 | or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS; | |
1239 | ||
1240 | /* first time calc data-in list header size */ | |
1241 | if (!or->get_attr.total_bytes) | |
1242 | or->get_attr.total_bytes = _osd_req_sizeof_alist_header(or); | |
1243 | ||
1244 | /* calc data-out info */ | |
1245 | if (!total_bytes) { /* first-time: allocate and put list header */ | |
1246 | unsigned max_bytes; | |
1247 | ||
1248 | total_bytes = _osd_req_sizeof_alist_header(or); | |
1249 | max_bytes = total_bytes + | |
1250 | nelem * sizeof(struct osd_attributes_list_attrid); | |
1251 | ret = _alloc_get_attr_desc(or, max_bytes); | |
1252 | if (ret) | |
1253 | return ret; | |
1254 | ||
1255 | _osd_req_set_alist_type(or, or->enc_get_attr.buff, | |
1256 | OSD_ATTR_LIST_GET); | |
1257 | } | |
1258 | attr_last = or->enc_get_attr.buff + total_bytes; | |
1259 | ||
1260 | for (; nelem; --nelem) { | |
1261 | struct osd_attributes_list_attrid *attrid; | |
1262 | const unsigned cur_size = sizeof(*attrid); | |
1263 | ||
1264 | total_bytes += cur_size; | |
1265 | if (unlikely(or->enc_get_attr.alloc_size < total_bytes)) { | |
1266 | or->enc_get_attr.total_bytes = total_bytes - cur_size; | |
1267 | ret = _alloc_get_attr_desc(or, | |
1268 | total_bytes + nelem * sizeof(*attrid)); | |
1269 | if (ret) | |
1270 | return ret; | |
1271 | attr_last = or->enc_get_attr.buff + | |
1272 | or->enc_get_attr.total_bytes; | |
1273 | } | |
1274 | ||
1275 | attrid = attr_last; | |
1276 | attrid->attr_page = cpu_to_be32(oa->attr_page); | |
1277 | attrid->attr_id = cpu_to_be32(oa->attr_id); | |
1278 | ||
1279 | attr_last += cur_size; | |
1280 | ||
1281 | /* calc data-in size */ | |
1282 | or->get_attr.total_bytes += | |
1283 | _osd_req_alist_elem_size(or, oa->len); | |
1284 | ++oa; | |
1285 | } | |
1286 | ||
1287 | or->enc_get_attr.total_bytes = total_bytes; | |
1288 | ||
1289 | OSD_DEBUG( | |
1290 | "get_attr.total_bytes=%u(%u) enc_get_attr.total_bytes=%u(%Zu)\n", | |
1291 | or->get_attr.total_bytes, | |
1292 | or->get_attr.total_bytes - _osd_req_sizeof_alist_header(or), | |
1293 | or->enc_get_attr.total_bytes, | |
1294 | (or->enc_get_attr.total_bytes - _osd_req_sizeof_alist_header(or)) | |
1295 | / sizeof(struct osd_attributes_list_attrid)); | |
1296 | ||
1297 | return 0; | |
1298 | } | |
1299 | EXPORT_SYMBOL(osd_req_add_get_attr_list); | |
1300 | ||
1301 | static int _osd_req_finalize_get_attr_list(struct osd_request *or) | |
1302 | { | |
1303 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
1304 | unsigned out_padding; | |
1305 | unsigned in_padding; | |
1306 | int ret; | |
1307 | ||
1308 | if (!or->enc_get_attr.total_bytes) { | |
1309 | cdbh->attrs_list.get_attr_desc_offset = OSD_OFFSET_UNUSED; | |
1310 | cdbh->attrs_list.get_attr_offset = OSD_OFFSET_UNUSED; | |
1311 | return 0; | |
1312 | } | |
1313 | ||
1314 | ret = _alloc_get_attr_list(or); | |
1315 | if (ret) | |
1316 | return ret; | |
1317 | ||
1318 | /* The out-going buffer info update */ | |
1319 | OSD_DEBUG("out-going\n"); | |
1320 | cdbh->attrs_list.get_attr_desc_bytes = | |
1321 | cpu_to_be32(or->enc_get_attr.total_bytes); | |
1322 | ||
1323 | cdbh->attrs_list.get_attr_desc_offset = | |
1324 | osd_req_encode_offset(or, or->out.total_bytes, &out_padding); | |
1325 | ||
1326 | ret = _req_append_segment(or, out_padding, &or->enc_get_attr, | |
1327 | or->out.last_seg, &or->out); | |
1328 | if (ret) | |
1329 | return ret; | |
1330 | or->out.last_seg = &or->enc_get_attr; | |
1331 | ||
1332 | /* The incoming buffer info update */ | |
1333 | OSD_DEBUG("in-coming\n"); | |
1334 | cdbh->attrs_list.get_attr_alloc_length = | |
1335 | cpu_to_be32(or->get_attr.total_bytes); | |
1336 | ||
1337 | cdbh->attrs_list.get_attr_offset = | |
1338 | osd_req_encode_offset(or, or->in.total_bytes, &in_padding); | |
1339 | ||
1340 | ret = _req_append_segment(or, in_padding, &or->get_attr, NULL, | |
1341 | &or->in); | |
1342 | if (ret) | |
1343 | return ret; | |
1344 | or->in.last_seg = &or->get_attr; | |
1345 | ||
1346 | return 0; | |
1347 | } | |
1348 | ||
1349 | int osd_req_decode_get_attr_list(struct osd_request *or, | |
1350 | struct osd_attr *oa, int *nelem, void **iterator) | |
1351 | { | |
1352 | unsigned cur_bytes, returned_bytes; | |
1353 | int n; | |
1354 | const unsigned sizeof_attr_list = _osd_req_sizeof_alist_header(or); | |
1355 | void *cur_p; | |
1356 | ||
1357 | if (!_osd_req_is_alist_type(or, or->get_attr.buff, | |
1358 | OSD_ATTR_LIST_SET_RETRIEVE)) { | |
1359 | oa->attr_page = 0; | |
1360 | oa->attr_id = 0; | |
1361 | oa->val_ptr = NULL; | |
1362 | oa->len = 0; | |
1363 | *iterator = NULL; | |
1364 | return 0; | |
1365 | } | |
1366 | ||
1367 | if (*iterator) { | |
1368 | BUG_ON((*iterator < or->get_attr.buff) || | |
1369 | (or->get_attr.buff + or->get_attr.alloc_size < *iterator)); | |
1370 | cur_p = *iterator; | |
1371 | cur_bytes = (*iterator - or->get_attr.buff) - sizeof_attr_list; | |
1372 | returned_bytes = or->get_attr.total_bytes; | |
1373 | } else { /* first time decode the list header */ | |
1374 | cur_bytes = sizeof_attr_list; | |
1375 | returned_bytes = _osd_req_alist_size(or, or->get_attr.buff) + | |
1376 | sizeof_attr_list; | |
1377 | ||
1378 | cur_p = or->get_attr.buff + sizeof_attr_list; | |
1379 | ||
1380 | if (returned_bytes > or->get_attr.alloc_size) { | |
1381 | OSD_DEBUG("target report: space was not big enough! " | |
1382 | "Allocate=%u Needed=%u\n", | |
1383 | or->get_attr.alloc_size, | |
1384 | returned_bytes + sizeof_attr_list); | |
1385 | ||
1386 | returned_bytes = | |
1387 | or->get_attr.alloc_size - sizeof_attr_list; | |
1388 | } | |
1389 | or->get_attr.total_bytes = returned_bytes; | |
1390 | } | |
1391 | ||
1392 | for (n = 0; (n < *nelem) && (cur_bytes < returned_bytes); ++n) { | |
71f32e31 BH |
1393 | int inc = _osd_req_alist_elem_decode(or, cur_p, oa, |
1394 | returned_bytes - cur_bytes); | |
4ef1a3d7 | 1395 | |
71f32e31 | 1396 | if (inc < 0) { |
4ef1a3d7 BH |
1397 | OSD_ERR("BAD FOOD from target. list not valid!" |
1398 | "c=%d r=%d n=%d\n", | |
1399 | cur_bytes, returned_bytes, n); | |
1400 | oa->val_ptr = NULL; | |
eff21490 | 1401 | cur_bytes = returned_bytes; /* break the caller loop */ |
4ef1a3d7 BH |
1402 | break; |
1403 | } | |
1404 | ||
71f32e31 | 1405 | cur_bytes += inc; |
4ef1a3d7 BH |
1406 | cur_p += inc; |
1407 | ++oa; | |
1408 | } | |
1409 | ||
1410 | *iterator = (returned_bytes - cur_bytes) ? cur_p : NULL; | |
1411 | *nelem = n; | |
1412 | return returned_bytes - cur_bytes; | |
1413 | } | |
1414 | EXPORT_SYMBOL(osd_req_decode_get_attr_list); | |
1415 | ||
1416 | /* | |
1417 | * Attributes Page-mode | |
1418 | */ | |
1419 | ||
1420 | int osd_req_add_get_attr_page(struct osd_request *or, | |
1421 | u32 page_id, void *attar_page, unsigned max_page_len, | |
1422 | const struct osd_attr *set_one_attr) | |
1423 | { | |
1424 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
1425 | ||
1426 | if (or->attributes_mode && | |
1427 | or->attributes_mode != OSD_CDB_GET_ATTR_PAGE_SET_ONE) { | |
1428 | WARN_ON(1); | |
1429 | return -EINVAL; | |
1430 | } | |
1431 | or->attributes_mode = OSD_CDB_GET_ATTR_PAGE_SET_ONE; | |
1432 | ||
1433 | or->get_attr.buff = attar_page; | |
1434 | or->get_attr.total_bytes = max_page_len; | |
1435 | ||
4ef1a3d7 BH |
1436 | cdbh->attrs_page.get_attr_page = cpu_to_be32(page_id); |
1437 | cdbh->attrs_page.get_attr_alloc_length = cpu_to_be32(max_page_len); | |
ec6a0a41 BH |
1438 | |
1439 | if (!set_one_attr || !set_one_attr->attr_page) | |
1440 | return 0; /* The set is optional */ | |
1441 | ||
1442 | or->set_attr.buff = set_one_attr->val_ptr; | |
1443 | or->set_attr.total_bytes = set_one_attr->len; | |
4ef1a3d7 BH |
1444 | |
1445 | cdbh->attrs_page.set_attr_page = cpu_to_be32(set_one_attr->attr_page); | |
1446 | cdbh->attrs_page.set_attr_id = cpu_to_be32(set_one_attr->attr_id); | |
1447 | cdbh->attrs_page.set_attr_length = cpu_to_be32(set_one_attr->len); | |
4ef1a3d7 BH |
1448 | return 0; |
1449 | } | |
1450 | EXPORT_SYMBOL(osd_req_add_get_attr_page); | |
1451 | ||
1452 | static int _osd_req_finalize_attr_page(struct osd_request *or) | |
1453 | { | |
1454 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
1455 | unsigned in_padding, out_padding; | |
1456 | int ret; | |
1457 | ||
1458 | /* returned page */ | |
1459 | cdbh->attrs_page.get_attr_offset = | |
1460 | osd_req_encode_offset(or, or->in.total_bytes, &in_padding); | |
1461 | ||
1462 | ret = _req_append_segment(or, in_padding, &or->get_attr, NULL, | |
1463 | &or->in); | |
1464 | if (ret) | |
1465 | return ret; | |
1466 | ||
ec6a0a41 BH |
1467 | if (or->set_attr.total_bytes == 0) |
1468 | return 0; | |
1469 | ||
4ef1a3d7 BH |
1470 | /* set one value */ |
1471 | cdbh->attrs_page.set_attr_offset = | |
1472 | osd_req_encode_offset(or, or->out.total_bytes, &out_padding); | |
1473 | ||
ec6a0a41 | 1474 | ret = _req_append_segment(or, out_padding, &or->set_attr, NULL, |
4ef1a3d7 BH |
1475 | &or->out); |
1476 | return ret; | |
1477 | } | |
1478 | ||
f8d3a644 BH |
1479 | static inline void osd_sec_parms_set_out_offset(bool is_v1, |
1480 | struct osd_security_parameters *sec_parms, osd_cdb_offset offset) | |
1481 | { | |
1482 | if (is_v1) | |
1483 | sec_parms->v1.data_out_integrity_check_offset = offset; | |
1484 | else | |
1485 | sec_parms->v2.data_out_integrity_check_offset = offset; | |
1486 | } | |
1487 | ||
1488 | static inline void osd_sec_parms_set_in_offset(bool is_v1, | |
1489 | struct osd_security_parameters *sec_parms, osd_cdb_offset offset) | |
1490 | { | |
1491 | if (is_v1) | |
1492 | sec_parms->v1.data_in_integrity_check_offset = offset; | |
1493 | else | |
1494 | sec_parms->v2.data_in_integrity_check_offset = offset; | |
1495 | } | |
1496 | ||
345c435d | 1497 | static int _osd_req_finalize_data_integrity(struct osd_request *or, |
e96e72c4 BH |
1498 | bool has_in, bool has_out, struct bio *out_data_bio, u64 out_data_bytes, |
1499 | const u8 *cap_key) | |
345c435d BH |
1500 | { |
1501 | struct osd_security_parameters *sec_parms = _osd_req_sec_params(or); | |
1502 | int ret; | |
1503 | ||
1504 | if (!osd_is_sec_alldata(sec_parms)) | |
1505 | return 0; | |
1506 | ||
1507 | if (has_out) { | |
1508 | struct _osd_req_data_segment seg = { | |
1509 | .buff = &or->out_data_integ, | |
1510 | .total_bytes = sizeof(or->out_data_integ), | |
1511 | }; | |
1512 | unsigned pad; | |
1513 | ||
546881ae | 1514 | or->out_data_integ.data_bytes = cpu_to_be64(out_data_bytes); |
345c435d BH |
1515 | or->out_data_integ.set_attributes_bytes = cpu_to_be64( |
1516 | or->set_attr.total_bytes); | |
1517 | or->out_data_integ.get_attributes_bytes = cpu_to_be64( | |
1518 | or->enc_get_attr.total_bytes); | |
1519 | ||
f8d3a644 BH |
1520 | osd_sec_parms_set_out_offset(osd_req_is_ver1(or), sec_parms, |
1521 | osd_req_encode_offset(or, or->out.total_bytes, &pad)); | |
345c435d BH |
1522 | |
1523 | ret = _req_append_segment(or, pad, &seg, or->out.last_seg, | |
1524 | &or->out); | |
1525 | if (ret) | |
1526 | return ret; | |
1527 | or->out.last_seg = NULL; | |
1528 | ||
1529 | /* they are now all chained to request sign them all together */ | |
e96e72c4 | 1530 | osd_sec_sign_data(&or->out_data_integ, out_data_bio, |
345c435d BH |
1531 | cap_key); |
1532 | } | |
1533 | ||
1534 | if (has_in) { | |
1535 | struct _osd_req_data_segment seg = { | |
1536 | .buff = &or->in_data_integ, | |
1537 | .total_bytes = sizeof(or->in_data_integ), | |
1538 | }; | |
1539 | unsigned pad; | |
1540 | ||
f8d3a644 BH |
1541 | osd_sec_parms_set_in_offset(osd_req_is_ver1(or), sec_parms, |
1542 | osd_req_encode_offset(or, or->in.total_bytes, &pad)); | |
345c435d BH |
1543 | |
1544 | ret = _req_append_segment(or, pad, &seg, or->in.last_seg, | |
1545 | &or->in); | |
1546 | if (ret) | |
1547 | return ret; | |
1548 | ||
1549 | or->in.last_seg = NULL; | |
1550 | } | |
1551 | ||
1552 | return 0; | |
1553 | } | |
1554 | ||
02941a53 BH |
1555 | /* |
1556 | * osd_finalize_request and helpers | |
1557 | */ | |
c29b70f6 BH |
1558 | static struct request *_make_request(struct request_queue *q, bool has_write, |
1559 | struct _osd_io_info *oii, gfp_t flags) | |
1560 | { | |
1561 | if (oii->bio) | |
1562 | return blk_make_request(q, oii->bio, flags); | |
1563 | else { | |
1564 | struct request *req; | |
1565 | ||
1566 | req = blk_get_request(q, has_write ? WRITE : READ, flags); | |
a492f075 JL |
1567 | if (IS_ERR(req)) |
1568 | return req; | |
c29b70f6 | 1569 | |
f27b087b | 1570 | blk_rq_set_block_pc(req); |
c29b70f6 BH |
1571 | return req; |
1572 | } | |
1573 | } | |
02941a53 BH |
1574 | |
1575 | static int _init_blk_request(struct osd_request *or, | |
1576 | bool has_in, bool has_out) | |
1577 | { | |
1578 | gfp_t flags = or->alloc_flags; | |
1579 | struct scsi_device *scsi_device = or->osd_dev->scsi_device; | |
1580 | struct request_queue *q = scsi_device->request_queue; | |
1581 | struct request *req; | |
c29b70f6 | 1582 | int ret; |
02941a53 | 1583 | |
c29b70f6 BH |
1584 | req = _make_request(q, has_out, has_out ? &or->out : &or->in, flags); |
1585 | if (IS_ERR(req)) { | |
1586 | ret = PTR_ERR(req); | |
02941a53 | 1587 | goto out; |
c29b70f6 | 1588 | } |
02941a53 BH |
1589 | |
1590 | or->request = req; | |
03306793 BH |
1591 | req->cmd_flags |= REQ_QUIET; |
1592 | ||
02941a53 BH |
1593 | req->timeout = or->timeout; |
1594 | req->retries = or->retries; | |
1595 | req->sense = or->sense; | |
1596 | req->sense_len = 0; | |
1597 | ||
1598 | if (has_out) { | |
1599 | or->out.req = req; | |
1600 | if (has_in) { | |
1601 | /* allocate bidi request */ | |
c29b70f6 BH |
1602 | req = _make_request(q, false, &or->in, flags); |
1603 | if (IS_ERR(req)) { | |
02941a53 | 1604 | OSD_DEBUG("blk_get_request for bidi failed\n"); |
c29b70f6 | 1605 | ret = PTR_ERR(req); |
02941a53 BH |
1606 | goto out; |
1607 | } | |
f27b087b | 1608 | blk_rq_set_block_pc(req); |
02941a53 BH |
1609 | or->in.req = or->request->next_rq = req; |
1610 | } | |
1611 | } else if (has_in) | |
1612 | or->in.req = req; | |
1613 | ||
1614 | ret = 0; | |
1615 | out: | |
1616 | OSD_DEBUG("or=%p has_in=%d has_out=%d => %d, %p\n", | |
1617 | or, has_in, has_out, ret, or->request); | |
1618 | return ret; | |
1619 | } | |
1620 | ||
1621 | int osd_finalize_request(struct osd_request *or, | |
1622 | u8 options, const void *cap, const u8 *cap_key) | |
1623 | { | |
1624 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
1625 | bool has_in, has_out; | |
e96e72c4 BH |
1626 | /* Save for data_integrity without the cdb_continuation */ |
1627 | struct bio *out_data_bio = or->out.bio; | |
546881ae | 1628 | u64 out_data_bytes = or->out.total_bytes; |
02941a53 BH |
1629 | int ret; |
1630 | ||
1631 | if (options & OSD_REQ_FUA) | |
1632 | cdbh->options |= OSD_CDB_FUA; | |
1633 | ||
1634 | if (options & OSD_REQ_DPO) | |
1635 | cdbh->options |= OSD_CDB_DPO; | |
1636 | ||
1637 | if (options & OSD_REQ_BYPASS_TIMESTAMPS) | |
1638 | cdbh->timestamp_control = OSD_CDB_BYPASS_TIMESTAMPS; | |
1639 | ||
1640 | osd_set_caps(&or->cdb, cap); | |
1641 | ||
1642 | has_in = or->in.bio || or->get_attr.total_bytes; | |
e96e72c4 BH |
1643 | has_out = or->out.bio || or->cdb_cont.total_bytes || |
1644 | or->set_attr.total_bytes || or->enc_get_attr.total_bytes; | |
02941a53 | 1645 | |
e96e72c4 BH |
1646 | ret = _osd_req_finalize_cdb_cont(or, cap_key); |
1647 | if (ret) { | |
1648 | OSD_DEBUG("_osd_req_finalize_cdb_cont failed\n"); | |
1649 | return ret; | |
1650 | } | |
02941a53 BH |
1651 | ret = _init_blk_request(or, has_in, has_out); |
1652 | if (ret) { | |
1653 | OSD_DEBUG("_init_blk_request failed\n"); | |
1654 | return ret; | |
1655 | } | |
1656 | ||
4ef1a3d7 BH |
1657 | or->out.pad_buff = sg_out_pad_buffer; |
1658 | or->in.pad_buff = sg_in_pad_buffer; | |
1659 | ||
02941a53 BH |
1660 | if (!or->attributes_mode) |
1661 | or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS; | |
1662 | cdbh->command_specific_options |= or->attributes_mode; | |
4ef1a3d7 BH |
1663 | if (or->attributes_mode == OSD_CDB_GET_ATTR_PAGE_SET_ONE) { |
1664 | ret = _osd_req_finalize_attr_page(or); | |
98e1e0f0 BH |
1665 | if (ret) { |
1666 | OSD_DEBUG("_osd_req_finalize_attr_page failed\n"); | |
1667 | return ret; | |
1668 | } | |
4ef1a3d7 BH |
1669 | } else { |
1670 | /* TODO: I think that for the GET_ATTR command these 2 should | |
1671 | * be reversed to keep them in execution order (for embeded | |
1672 | * targets with low memory footprint) | |
1673 | */ | |
1674 | ret = _osd_req_finalize_set_attr_list(or); | |
1675 | if (ret) { | |
1676 | OSD_DEBUG("_osd_req_finalize_set_attr_list failed\n"); | |
1677 | return ret; | |
1678 | } | |
1679 | ||
1680 | ret = _osd_req_finalize_get_attr_list(or); | |
1681 | if (ret) { | |
1682 | OSD_DEBUG("_osd_req_finalize_get_attr_list failed\n"); | |
1683 | return ret; | |
1684 | } | |
1685 | } | |
02941a53 | 1686 | |
546881ae | 1687 | ret = _osd_req_finalize_data_integrity(or, has_in, has_out, |
e96e72c4 BH |
1688 | out_data_bio, out_data_bytes, |
1689 | cap_key); | |
345c435d BH |
1690 | if (ret) |
1691 | return ret; | |
1692 | ||
1693 | osd_sec_sign_cdb(&or->cdb, cap_key); | |
1694 | ||
02941a53 BH |
1695 | or->request->cmd = or->cdb.buff; |
1696 | or->request->cmd_len = _osd_req_cdb_len(or); | |
1697 | ||
1698 | return 0; | |
1699 | } | |
1700 | EXPORT_SYMBOL(osd_finalize_request); | |
1701 | ||
aa9fffbe BH |
1702 | static bool _is_osd_security_code(int code) |
1703 | { | |
1704 | return (code == osd_security_audit_value_frozen) || | |
1705 | (code == osd_security_working_key_frozen) || | |
1706 | (code == osd_nonce_not_unique) || | |
1707 | (code == osd_nonce_timestamp_out_of_range) || | |
1708 | (code == osd_invalid_dataout_buffer_integrity_check_value); | |
1709 | } | |
1710 | ||
98f3aea2 BH |
1711 | #define OSD_SENSE_PRINT1(fmt, a...) \ |
1712 | do { \ | |
1713 | if (__cur_sense_need_output) \ | |
1714 | OSD_ERR(fmt, ##a); \ | |
1715 | } while (0) | |
1716 | ||
1717 | #define OSD_SENSE_PRINT2(fmt, a...) OSD_SENSE_PRINT1(" " fmt, ##a) | |
1718 | ||
1719 | int osd_req_decode_sense_full(struct osd_request *or, | |
1720 | struct osd_sense_info *osi, bool silent, | |
1721 | struct osd_obj_id *bad_obj_list __unused, int max_obj __unused, | |
1722 | struct osd_attr *bad_attr_list, int max_attr) | |
1723 | { | |
1724 | int sense_len, original_sense_len; | |
1725 | struct osd_sense_info local_osi; | |
1726 | struct scsi_sense_descriptor_based *ssdb; | |
1727 | void *cur_descriptor; | |
1728 | #if (CONFIG_SCSI_OSD_DPRINT_SENSE == 0) | |
1729 | const bool __cur_sense_need_output = false; | |
1730 | #else | |
1731 | bool __cur_sense_need_output = !silent; | |
1732 | #endif | |
aa9fffbe | 1733 | int ret; |
98f3aea2 | 1734 | |
5d0961fd | 1735 | if (likely(!or->req_errors)) |
98f3aea2 | 1736 | return 0; |
aa9fffbe BH |
1737 | |
1738 | osi = osi ? : &local_osi; | |
1739 | memset(osi, 0, sizeof(*osi)); | |
98f3aea2 | 1740 | |
5d0961fd BH |
1741 | ssdb = (typeof(ssdb))or->sense; |
1742 | sense_len = or->sense_len; | |
98f3aea2 BH |
1743 | if ((sense_len < (int)sizeof(*ssdb) || !ssdb->sense_key)) { |
1744 | OSD_ERR("Block-layer returned error(0x%x) but " | |
1745 | "sense_len(%u) || key(%d) is empty\n", | |
5d0961fd | 1746 | or->req_errors, sense_len, ssdb->sense_key); |
aa9fffbe | 1747 | goto analyze; |
98f3aea2 BH |
1748 | } |
1749 | ||
1750 | if ((ssdb->response_code != 0x72) && (ssdb->response_code != 0x73)) { | |
1751 | OSD_ERR("Unrecognized scsi sense: rcode=%x length=%d\n", | |
1752 | ssdb->response_code, sense_len); | |
aa9fffbe | 1753 | goto analyze; |
98f3aea2 BH |
1754 | } |
1755 | ||
98f3aea2 BH |
1756 | osi->key = ssdb->sense_key; |
1757 | osi->additional_code = be16_to_cpu(ssdb->additional_sense_code); | |
1758 | original_sense_len = ssdb->additional_sense_length + 8; | |
1759 | ||
1760 | #if (CONFIG_SCSI_OSD_DPRINT_SENSE == 1) | |
1761 | if (__cur_sense_need_output) | |
1762 | __cur_sense_need_output = (osi->key > scsi_sk_recovered_error); | |
1763 | #endif | |
1764 | OSD_SENSE_PRINT1("Main Sense information key=0x%x length(%d, %d) " | |
aa9fffbe | 1765 | "additional_code=0x%x async_error=%d errors=0x%x\n", |
98f3aea2 | 1766 | osi->key, original_sense_len, sense_len, |
aa9fffbe | 1767 | osi->additional_code, or->async_error, |
5d0961fd | 1768 | or->req_errors); |
98f3aea2 BH |
1769 | |
1770 | if (original_sense_len < sense_len) | |
1771 | sense_len = original_sense_len; | |
1772 | ||
1773 | cur_descriptor = ssdb->ssd; | |
1774 | sense_len -= sizeof(*ssdb); | |
1775 | while (sense_len > 0) { | |
1776 | struct scsi_sense_descriptor *ssd = cur_descriptor; | |
1777 | int cur_len = ssd->additional_length + 2; | |
1778 | ||
1779 | sense_len -= cur_len; | |
1780 | ||
1781 | if (sense_len < 0) | |
1782 | break; /* sense was truncated */ | |
1783 | ||
1784 | switch (ssd->descriptor_type) { | |
1785 | case scsi_sense_information: | |
1786 | case scsi_sense_command_specific_information: | |
1787 | { | |
1788 | struct scsi_sense_command_specific_data_descriptor | |
1789 | *sscd = cur_descriptor; | |
1790 | ||
1791 | osi->command_info = | |
1792 | get_unaligned_be64(&sscd->information) ; | |
1793 | OSD_SENSE_PRINT2( | |
1794 | "command_specific_information 0x%llx \n", | |
1795 | _LLU(osi->command_info)); | |
1796 | break; | |
1797 | } | |
1798 | case scsi_sense_key_specific: | |
1799 | { | |
1800 | struct scsi_sense_key_specific_data_descriptor | |
1801 | *ssks = cur_descriptor; | |
1802 | ||
1803 | osi->sense_info = get_unaligned_be16(&ssks->value); | |
1804 | OSD_SENSE_PRINT2( | |
1805 | "sense_key_specific_information %u" | |
1806 | "sksv_cd_bpv_bp (0x%x)\n", | |
1807 | osi->sense_info, ssks->sksv_cd_bpv_bp); | |
1808 | break; | |
1809 | } | |
1810 | case osd_sense_object_identification: | |
1811 | { /*FIXME: Keep first not last, Store in array*/ | |
1812 | struct osd_sense_identification_data_descriptor | |
1813 | *osidd = cur_descriptor; | |
1814 | ||
1815 | osi->not_initiated_command_functions = | |
1816 | le32_to_cpu(osidd->not_initiated_functions); | |
1817 | osi->completed_command_functions = | |
1818 | le32_to_cpu(osidd->completed_functions); | |
1819 | osi->obj.partition = be64_to_cpu(osidd->partition_id); | |
1820 | osi->obj.id = be64_to_cpu(osidd->object_id); | |
1821 | OSD_SENSE_PRINT2( | |
1822 | "object_identification pid=0x%llx oid=0x%llx\n", | |
1823 | _LLU(osi->obj.partition), _LLU(osi->obj.id)); | |
1824 | OSD_SENSE_PRINT2( | |
1825 | "not_initiated_bits(%x) " | |
1826 | "completed_command_bits(%x)\n", | |
1827 | osi->not_initiated_command_functions, | |
1828 | osi->completed_command_functions); | |
1829 | break; | |
1830 | } | |
1831 | case osd_sense_response_integrity_check: | |
1832 | { | |
1833 | struct osd_sense_response_integrity_check_descriptor | |
1834 | *osricd = cur_descriptor; | |
1835 | const unsigned len = | |
1836 | sizeof(osricd->integrity_check_value); | |
1837 | char key_dump[len*4 + 2]; /* 2nibbles+space+ASCII */ | |
1838 | ||
1839 | hex_dump_to_buffer(osricd->integrity_check_value, len, | |
1840 | 32, 1, key_dump, sizeof(key_dump), true); | |
1841 | OSD_SENSE_PRINT2("response_integrity [%s]\n", key_dump); | |
1842 | } | |
1843 | case osd_sense_attribute_identification: | |
1844 | { | |
1845 | struct osd_sense_attributes_data_descriptor | |
1846 | *osadd = cur_descriptor; | |
71ecb74b | 1847 | unsigned len = min(cur_len, sense_len); |
98f3aea2 BH |
1848 | struct osd_sense_attr *pattr = osadd->sense_attrs; |
1849 | ||
71ecb74b | 1850 | while (len >= sizeof(*pattr)) { |
98f3aea2 BH |
1851 | u32 attr_page = be32_to_cpu(pattr->attr_page); |
1852 | u32 attr_id = be32_to_cpu(pattr->attr_id); | |
1853 | ||
71ecb74b | 1854 | if (!osi->attr.attr_page) { |
98f3aea2 BH |
1855 | osi->attr.attr_page = attr_page; |
1856 | osi->attr.attr_id = attr_id; | |
1857 | } | |
1858 | ||
1859 | if (bad_attr_list && max_attr) { | |
1860 | bad_attr_list->attr_page = attr_page; | |
1861 | bad_attr_list->attr_id = attr_id; | |
1862 | bad_attr_list++; | |
1863 | max_attr--; | |
1864 | } | |
71ecb74b BH |
1865 | |
1866 | len -= sizeof(*pattr); | |
98f3aea2 BH |
1867 | OSD_SENSE_PRINT2( |
1868 | "osd_sense_attribute_identification" | |
1869 | "attr_page=0x%x attr_id=0x%x\n", | |
1870 | attr_page, attr_id); | |
1871 | } | |
1872 | } | |
1873 | /*These are not legal for OSD*/ | |
1874 | case scsi_sense_field_replaceable_unit: | |
1875 | OSD_SENSE_PRINT2("scsi_sense_field_replaceable_unit\n"); | |
1876 | break; | |
1877 | case scsi_sense_stream_commands: | |
1878 | OSD_SENSE_PRINT2("scsi_sense_stream_commands\n"); | |
1879 | break; | |
1880 | case scsi_sense_block_commands: | |
1881 | OSD_SENSE_PRINT2("scsi_sense_block_commands\n"); | |
1882 | break; | |
1883 | case scsi_sense_ata_return: | |
1884 | OSD_SENSE_PRINT2("scsi_sense_ata_return\n"); | |
1885 | break; | |
1886 | default: | |
1887 | if (ssd->descriptor_type <= scsi_sense_Reserved_last) | |
1888 | OSD_SENSE_PRINT2( | |
1889 | "scsi_sense Reserved descriptor (0x%x)", | |
1890 | ssd->descriptor_type); | |
1891 | else | |
1892 | OSD_SENSE_PRINT2( | |
1893 | "scsi_sense Vendor descriptor (0x%x)", | |
1894 | ssd->descriptor_type); | |
1895 | } | |
1896 | ||
1897 | cur_descriptor += cur_len; | |
1898 | } | |
1899 | ||
aa9fffbe BH |
1900 | analyze: |
1901 | if (!osi->key) { | |
1902 | /* scsi sense is Empty, the request was never issued to target | |
1903 | * linux return code might tell us what happened. | |
1904 | */ | |
1905 | if (or->async_error == -ENOMEM) | |
1906 | osi->osd_err_pri = OSD_ERR_PRI_RESOURCE; | |
1907 | else | |
1908 | osi->osd_err_pri = OSD_ERR_PRI_UNREACHABLE; | |
1909 | ret = or->async_error; | |
1910 | } else if (osi->key <= scsi_sk_recovered_error) { | |
1911 | osi->osd_err_pri = 0; | |
1912 | ret = 0; | |
1913 | } else if (osi->additional_code == scsi_invalid_field_in_cdb) { | |
1914 | if (osi->cdb_field_offset == OSD_CFO_STARTING_BYTE) { | |
1915 | osi->osd_err_pri = OSD_ERR_PRI_CLEAR_PAGES; | |
1916 | ret = -EFAULT; /* caller should recover from this */ | |
1917 | } else if (osi->cdb_field_offset == OSD_CFO_OBJECT_ID) { | |
1918 | osi->osd_err_pri = OSD_ERR_PRI_NOT_FOUND; | |
1919 | ret = -ENOENT; | |
1920 | } else if (osi->cdb_field_offset == OSD_CFO_PERMISSIONS) { | |
1921 | osi->osd_err_pri = OSD_ERR_PRI_NO_ACCESS; | |
1922 | ret = -EACCES; | |
1923 | } else { | |
1924 | osi->osd_err_pri = OSD_ERR_PRI_BAD_CRED; | |
1925 | ret = -EINVAL; | |
1926 | } | |
1927 | } else if (osi->additional_code == osd_quota_error) { | |
1928 | osi->osd_err_pri = OSD_ERR_PRI_NO_SPACE; | |
1929 | ret = -ENOSPC; | |
1930 | } else if (_is_osd_security_code(osi->additional_code)) { | |
1931 | osi->osd_err_pri = OSD_ERR_PRI_BAD_CRED; | |
1932 | ret = -EINVAL; | |
1933 | } else { | |
1934 | osi->osd_err_pri = OSD_ERR_PRI_EIO; | |
1935 | ret = -EIO; | |
1936 | } | |
1937 | ||
5d0961fd BH |
1938 | if (!or->out.residual) |
1939 | or->out.residual = or->out.total_bytes; | |
1940 | if (!or->in.residual) | |
1941 | or->in.residual = or->in.total_bytes; | |
aa9fffbe BH |
1942 | |
1943 | return ret; | |
98f3aea2 BH |
1944 | } |
1945 | EXPORT_SYMBOL(osd_req_decode_sense_full); | |
1946 | ||
02941a53 BH |
1947 | /* |
1948 | * Implementation of osd_sec.h API | |
1949 | * TODO: Move to a separate osd_sec.c file at a later stage. | |
1950 | */ | |
1951 | ||
1952 | enum { OSD_SEC_CAP_V1_ALL_CAPS = | |
1953 | OSD_SEC_CAP_APPEND | OSD_SEC_CAP_OBJ_MGMT | OSD_SEC_CAP_REMOVE | | |
1954 | OSD_SEC_CAP_CREATE | OSD_SEC_CAP_SET_ATTR | OSD_SEC_CAP_GET_ATTR | | |
1955 | OSD_SEC_CAP_WRITE | OSD_SEC_CAP_READ | OSD_SEC_CAP_POL_SEC | | |
1956 | OSD_SEC_CAP_GLOBAL | OSD_SEC_CAP_DEV_MGMT | |
1957 | }; | |
1958 | ||
c6572c98 BH |
1959 | enum { OSD_SEC_CAP_V2_ALL_CAPS = |
1960 | OSD_SEC_CAP_V1_ALL_CAPS | OSD_SEC_CAP_QUERY | OSD_SEC_CAP_M_OBJECT | |
1961 | }; | |
1962 | ||
02941a53 BH |
1963 | void osd_sec_init_nosec_doall_caps(void *caps, |
1964 | const struct osd_obj_id *obj, bool is_collection, const bool is_v1) | |
1965 | { | |
1966 | struct osd_capability *cap = caps; | |
1967 | u8 type; | |
1968 | u8 descriptor_type; | |
1969 | ||
1970 | if (likely(obj->id)) { | |
1971 | if (unlikely(is_collection)) { | |
1972 | type = OSD_SEC_OBJ_COLLECTION; | |
1973 | descriptor_type = is_v1 ? OSD_SEC_OBJ_DESC_OBJ : | |
1974 | OSD_SEC_OBJ_DESC_COL; | |
1975 | } else { | |
1976 | type = OSD_SEC_OBJ_USER; | |
1977 | descriptor_type = OSD_SEC_OBJ_DESC_OBJ; | |
1978 | } | |
1979 | WARN_ON(!obj->partition); | |
1980 | } else { | |
1981 | type = obj->partition ? OSD_SEC_OBJ_PARTITION : | |
1982 | OSD_SEC_OBJ_ROOT; | |
1983 | descriptor_type = OSD_SEC_OBJ_DESC_PAR; | |
1984 | } | |
1985 | ||
1986 | memset(cap, 0, sizeof(*cap)); | |
1987 | ||
1988 | cap->h.format = OSD_SEC_CAP_FORMAT_VER1; | |
1989 | cap->h.integrity_algorithm__key_version = 0; /* MAKE_BYTE(0, 0); */ | |
1990 | cap->h.security_method = OSD_SEC_NOSEC; | |
1991 | /* cap->expiration_time; | |
1992 | cap->AUDIT[30-10]; | |
1993 | cap->discriminator[42-30]; | |
1994 | cap->object_created_time; */ | |
1995 | cap->h.object_type = type; | |
1996 | osd_sec_set_caps(&cap->h, OSD_SEC_CAP_V1_ALL_CAPS); | |
1997 | cap->h.object_descriptor_type = descriptor_type; | |
1998 | cap->od.obj_desc.policy_access_tag = 0; | |
1999 | cap->od.obj_desc.allowed_partition_id = cpu_to_be64(obj->partition); | |
2000 | cap->od.obj_desc.allowed_object_id = cpu_to_be64(obj->id); | |
2001 | } | |
2002 | EXPORT_SYMBOL(osd_sec_init_nosec_doall_caps); | |
2003 | ||
c6572c98 BH |
2004 | /* FIXME: Extract version from caps pointer. |
2005 | * Also Pete's target only supports caps from OSDv1 for now | |
2006 | */ | |
02941a53 BH |
2007 | void osd_set_caps(struct osd_cdb *cdb, const void *caps) |
2008 | { | |
c6572c98 | 2009 | /* NOTE: They start at same address */ |
ba690c79 | 2010 | memcpy(&cdb->v1.caps, caps, OSDv1_CAP_LEN); |
02941a53 | 2011 | } |
4ef1a3d7 | 2012 | |
345c435d BH |
2013 | bool osd_is_sec_alldata(struct osd_security_parameters *sec_parms __unused) |
2014 | { | |
2015 | return false; | |
2016 | } | |
2017 | ||
2018 | void osd_sec_sign_cdb(struct osd_cdb *ocdb __unused, const u8 *cap_key __unused) | |
2019 | { | |
2020 | } | |
2021 | ||
2022 | void osd_sec_sign_data(void *data_integ __unused, | |
2023 | struct bio *bio __unused, const u8 *cap_key __unused) | |
2024 | { | |
2025 | } | |
2026 | ||
4ef1a3d7 BH |
2027 | /* |
2028 | * Declared in osd_protocol.h | |
2029 | * 4.12.5 Data-In and Data-Out buffer offsets | |
2030 | * byte offset = mantissa * (2^(exponent+8)) | |
2031 | * Returns the smallest allowed encoded offset that contains given @offset | |
2032 | * The actual encoded offset returned is @offset + *@padding. | |
2033 | */ | |
2034 | osd_cdb_offset __osd_encode_offset( | |
2035 | u64 offset, unsigned *padding, int min_shift, int max_shift) | |
2036 | { | |
2037 | u64 try_offset = -1, mod, align; | |
2038 | osd_cdb_offset be32_offset; | |
2039 | int shift; | |
2040 | ||
2041 | *padding = 0; | |
2042 | if (!offset) | |
2043 | return 0; | |
2044 | ||
2045 | for (shift = min_shift; shift < max_shift; ++shift) { | |
2046 | try_offset = offset >> shift; | |
2047 | if (try_offset < (1 << OSD_OFFSET_MAX_BITS)) | |
2048 | break; | |
2049 | } | |
2050 | ||
2051 | BUG_ON(shift == max_shift); | |
2052 | ||
2053 | align = 1 << shift; | |
2054 | mod = offset & (align - 1); | |
2055 | if (mod) { | |
2056 | *padding = align - mod; | |
2057 | try_offset += 1; | |
2058 | } | |
2059 | ||
2060 | try_offset |= ((shift - 8) & 0xf) << 28; | |
2061 | be32_offset = cpu_to_be32((u32)try_offset); | |
2062 | ||
2063 | OSD_DEBUG("offset=%llu mantissa=%llu exp=%d encoded=%x pad=%d\n", | |
2064 | _LLU(offset), _LLU(try_offset & 0x0FFFFFFF), shift, | |
2065 | be32_offset, *padding); | |
2066 | return be32_offset; | |
2067 | } |