Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 1 | /* |
| 2 | * osd_initiator - Main body of the osd initiator library. |
| 3 | * |
| 4 | * Note: The file does not contain the advanced security functionality which |
| 5 | * is only needed by the security_manager's initiators. |
| 6 | * |
| 7 | * Copyright (C) 2008 Panasas Inc. All rights reserved. |
| 8 | * |
| 9 | * Authors: |
| 10 | * Boaz Harrosh <bharrosh@panasas.com> |
| 11 | * Benny Halevy <bhalevy@panasas.com> |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License version 2 |
| 15 | * |
| 16 | * Redistribution and use in source and binary forms, with or without |
| 17 | * modification, are permitted provided that the following conditions |
| 18 | * are met: |
| 19 | * |
| 20 | * 1. Redistributions of source code must retain the above copyright |
| 21 | * notice, this list of conditions and the following disclaimer. |
| 22 | * 2. Redistributions in binary form must reproduce the above copyright |
| 23 | * notice, this list of conditions and the following disclaimer in the |
| 24 | * documentation and/or other materials provided with the distribution. |
| 25 | * 3. Neither the name of the Panasas company nor the names of its |
| 26 | * contributors may be used to endorse or promote products derived |
| 27 | * from this software without specific prior written permission. |
| 28 | * |
| 29 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 30 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 31 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 32 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 33 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 34 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 35 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 36 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 37 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 38 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 39 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 40 | */ |
| 41 | |
| 42 | #include <scsi/osd_initiator.h> |
| 43 | #include <scsi/osd_sec.h> |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 44 | #include <scsi/osd_attributes.h> |
Boaz Harrosh | 98f3aea | 2009-01-25 17:15:16 +0200 | [diff] [blame] | 45 | #include <scsi/osd_sense.h> |
| 46 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 47 | #include <scsi/scsi_device.h> |
| 48 | |
| 49 | #include "osd_debug.h" |
| 50 | |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 51 | #ifndef __unused |
| 52 | # define __unused __attribute__((unused)) |
| 53 | #endif |
| 54 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 55 | enum { OSD_REQ_RETRIES = 1 }; |
| 56 | |
| 57 | MODULE_AUTHOR("Boaz Harrosh <bharrosh@panasas.com>"); |
| 58 | MODULE_DESCRIPTION("open-osd initiator library libosd.ko"); |
| 59 | MODULE_LICENSE("GPL"); |
| 60 | |
| 61 | static inline void build_test(void) |
| 62 | { |
| 63 | /* structures were not packed */ |
| 64 | BUILD_BUG_ON(sizeof(struct osd_capability) != OSD_CAP_LEN); |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 65 | BUILD_BUG_ON(sizeof(struct osdv2_cdb) != OSD_TOTAL_CDB_LEN); |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 66 | BUILD_BUG_ON(sizeof(struct osdv1_cdb) != OSDv1_TOTAL_CDB_LEN); |
| 67 | } |
| 68 | |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 69 | static const char *_osd_ver_desc(struct osd_request *or) |
| 70 | { |
| 71 | return osd_req_is_ver1(or) ? "OSD1" : "OSD2"; |
| 72 | } |
| 73 | |
| 74 | #define ATTR_DEF_RI(id, len) ATTR_DEF(OSD_APAGE_ROOT_INFORMATION, id, len) |
| 75 | |
| 76 | static int _osd_print_system_info(struct osd_dev *od, void *caps) |
| 77 | { |
| 78 | struct osd_request *or; |
| 79 | struct osd_attr get_attrs[] = { |
| 80 | ATTR_DEF_RI(OSD_ATTR_RI_VENDOR_IDENTIFICATION, 8), |
| 81 | ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_IDENTIFICATION, 16), |
| 82 | ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_MODEL, 32), |
| 83 | ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_REVISION_LEVEL, 4), |
| 84 | ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_SERIAL_NUMBER, 64 /*variable*/), |
| 85 | ATTR_DEF_RI(OSD_ATTR_RI_OSD_NAME, 64 /*variable*/), |
| 86 | ATTR_DEF_RI(OSD_ATTR_RI_TOTAL_CAPACITY, 8), |
| 87 | ATTR_DEF_RI(OSD_ATTR_RI_USED_CAPACITY, 8), |
| 88 | ATTR_DEF_RI(OSD_ATTR_RI_NUMBER_OF_PARTITIONS, 8), |
| 89 | ATTR_DEF_RI(OSD_ATTR_RI_CLOCK, 6), |
| 90 | /* IBM-OSD-SIM Has a bug with this one put it last */ |
| 91 | ATTR_DEF_RI(OSD_ATTR_RI_OSD_SYSTEM_ID, 20), |
| 92 | }; |
| 93 | void *iter = NULL, *pFirst; |
| 94 | int nelem = ARRAY_SIZE(get_attrs), a = 0; |
| 95 | int ret; |
| 96 | |
| 97 | or = osd_start_request(od, GFP_KERNEL); |
| 98 | if (!or) |
| 99 | return -ENOMEM; |
| 100 | |
| 101 | /* get attrs */ |
| 102 | osd_req_get_attributes(or, &osd_root_object); |
| 103 | osd_req_add_get_attr_list(or, get_attrs, ARRAY_SIZE(get_attrs)); |
| 104 | |
| 105 | ret = osd_finalize_request(or, 0, caps, NULL); |
| 106 | if (ret) |
| 107 | goto out; |
| 108 | |
| 109 | ret = osd_execute_request(or); |
| 110 | if (ret) { |
| 111 | OSD_ERR("Failed to detect %s => %d\n", _osd_ver_desc(or), ret); |
| 112 | goto out; |
| 113 | } |
| 114 | |
| 115 | osd_req_decode_get_attr_list(or, get_attrs, &nelem, &iter); |
| 116 | |
| 117 | OSD_INFO("Detected %s device\n", |
| 118 | _osd_ver_desc(or)); |
| 119 | |
| 120 | pFirst = get_attrs[a++].val_ptr; |
Boaz Harrosh | de6b203 | 2009-05-24 20:01:26 +0300 | [diff] [blame] | 121 | OSD_INFO("VENDOR_IDENTIFICATION [%s]\n", |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 122 | (char *)pFirst); |
| 123 | |
| 124 | pFirst = get_attrs[a++].val_ptr; |
Boaz Harrosh | de6b203 | 2009-05-24 20:01:26 +0300 | [diff] [blame] | 125 | OSD_INFO("PRODUCT_IDENTIFICATION [%s]\n", |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 126 | (char *)pFirst); |
| 127 | |
| 128 | pFirst = get_attrs[a++].val_ptr; |
Boaz Harrosh | de6b203 | 2009-05-24 20:01:26 +0300 | [diff] [blame] | 129 | OSD_INFO("PRODUCT_MODEL [%s]\n", |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 130 | (char *)pFirst); |
| 131 | |
| 132 | pFirst = get_attrs[a++].val_ptr; |
Boaz Harrosh | de6b203 | 2009-05-24 20:01:26 +0300 | [diff] [blame] | 133 | OSD_INFO("PRODUCT_REVISION_LEVEL [%u]\n", |
Boaz Harrosh | 97218a1 | 2009-02-08 18:02:22 +0200 | [diff] [blame] | 134 | pFirst ? get_unaligned_be32(pFirst) : ~0U); |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 135 | |
| 136 | pFirst = get_attrs[a++].val_ptr; |
Boaz Harrosh | de6b203 | 2009-05-24 20:01:26 +0300 | [diff] [blame] | 137 | OSD_INFO("PRODUCT_SERIAL_NUMBER [%s]\n", |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 138 | (char *)pFirst); |
| 139 | |
| 140 | pFirst = get_attrs[a].val_ptr; |
Boaz Harrosh | de6b203 | 2009-05-24 20:01:26 +0300 | [diff] [blame] | 141 | OSD_INFO("OSD_NAME [%s]\n", (char *)pFirst); |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 142 | a++; |
| 143 | |
| 144 | pFirst = get_attrs[a++].val_ptr; |
Boaz Harrosh | de6b203 | 2009-05-24 20:01:26 +0300 | [diff] [blame] | 145 | OSD_INFO("TOTAL_CAPACITY [0x%llx]\n", |
Boaz Harrosh | 97218a1 | 2009-02-08 18:02:22 +0200 | [diff] [blame] | 146 | pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL); |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 147 | |
| 148 | pFirst = get_attrs[a++].val_ptr; |
Boaz Harrosh | de6b203 | 2009-05-24 20:01:26 +0300 | [diff] [blame] | 149 | OSD_INFO("USED_CAPACITY [0x%llx]\n", |
Boaz Harrosh | 97218a1 | 2009-02-08 18:02:22 +0200 | [diff] [blame] | 150 | pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL); |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 151 | |
| 152 | pFirst = get_attrs[a++].val_ptr; |
Boaz Harrosh | de6b203 | 2009-05-24 20:01:26 +0300 | [diff] [blame] | 153 | OSD_INFO("NUMBER_OF_PARTITIONS [%llu]\n", |
Boaz Harrosh | 97218a1 | 2009-02-08 18:02:22 +0200 | [diff] [blame] | 154 | pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL); |
| 155 | |
| 156 | if (a >= nelem) |
| 157 | goto out; |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 158 | |
| 159 | /* FIXME: Where are the time utilities */ |
| 160 | pFirst = get_attrs[a++].val_ptr; |
Boaz Harrosh | de6b203 | 2009-05-24 20:01:26 +0300 | [diff] [blame] | 161 | OSD_INFO("CLOCK [0x%02x%02x%02x%02x%02x%02x]\n", |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 162 | ((char *)pFirst)[0], ((char *)pFirst)[1], |
| 163 | ((char *)pFirst)[2], ((char *)pFirst)[3], |
| 164 | ((char *)pFirst)[4], ((char *)pFirst)[5]); |
| 165 | |
| 166 | if (a < nelem) { /* IBM-OSD-SIM bug, Might not have it */ |
| 167 | unsigned len = get_attrs[a].len; |
| 168 | char sid_dump[32*4 + 2]; /* 2nibbles+space+ASCII */ |
| 169 | |
| 170 | hex_dump_to_buffer(get_attrs[a].val_ptr, len, 32, 1, |
| 171 | sid_dump, sizeof(sid_dump), true); |
Boaz Harrosh | de6b203 | 2009-05-24 20:01:26 +0300 | [diff] [blame] | 172 | OSD_INFO("OSD_SYSTEM_ID(%d)\n" |
| 173 | " [%s]\n", len, sid_dump); |
Boaz Harrosh | 1b9dce9 | 2009-01-25 17:13:38 +0200 | [diff] [blame] | 174 | a++; |
| 175 | } |
| 176 | out: |
| 177 | osd_end_request(or); |
| 178 | return ret; |
| 179 | } |
| 180 | |
| 181 | int osd_auto_detect_ver(struct osd_dev *od, void *caps) |
| 182 | { |
| 183 | int ret; |
| 184 | |
| 185 | /* Auto-detect the osd version */ |
| 186 | ret = _osd_print_system_info(od, caps); |
| 187 | if (ret) { |
| 188 | osd_dev_set_ver(od, OSD_VER1); |
| 189 | OSD_DEBUG("converting to OSD1\n"); |
| 190 | ret = _osd_print_system_info(od, caps); |
| 191 | } |
| 192 | |
| 193 | return ret; |
| 194 | } |
| 195 | EXPORT_SYMBOL(osd_auto_detect_ver); |
| 196 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 197 | static unsigned _osd_req_cdb_len(struct osd_request *or) |
| 198 | { |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 199 | return osd_req_is_ver1(or) ? OSDv1_TOTAL_CDB_LEN : OSD_TOTAL_CDB_LEN; |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 200 | } |
| 201 | |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 202 | static unsigned _osd_req_alist_elem_size(struct osd_request *or, unsigned len) |
| 203 | { |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 204 | return osd_req_is_ver1(or) ? |
| 205 | osdv1_attr_list_elem_size(len) : |
| 206 | osdv2_attr_list_elem_size(len); |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 207 | } |
| 208 | |
Boaz Harrosh | 71f32e3 | 2009-04-19 19:11:42 +0300 | [diff] [blame] | 209 | static void _osd_req_alist_elem_encode(struct osd_request *or, |
| 210 | void *attr_last, const struct osd_attr *oa) |
| 211 | { |
| 212 | if (osd_req_is_ver1(or)) { |
| 213 | struct osdv1_attributes_list_element *attr = attr_last; |
| 214 | |
| 215 | attr->attr_page = cpu_to_be32(oa->attr_page); |
| 216 | attr->attr_id = cpu_to_be32(oa->attr_id); |
| 217 | attr->attr_bytes = cpu_to_be16(oa->len); |
| 218 | memcpy(attr->attr_val, oa->val_ptr, oa->len); |
| 219 | } else { |
| 220 | struct osdv2_attributes_list_element *attr = attr_last; |
| 221 | |
| 222 | attr->attr_page = cpu_to_be32(oa->attr_page); |
| 223 | attr->attr_id = cpu_to_be32(oa->attr_id); |
| 224 | attr->attr_bytes = cpu_to_be16(oa->len); |
| 225 | memcpy(attr->attr_val, oa->val_ptr, oa->len); |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | static int _osd_req_alist_elem_decode(struct osd_request *or, |
| 230 | void *cur_p, struct osd_attr *oa, unsigned max_bytes) |
| 231 | { |
| 232 | unsigned inc; |
| 233 | if (osd_req_is_ver1(or)) { |
| 234 | struct osdv1_attributes_list_element *attr = cur_p; |
| 235 | |
| 236 | if (max_bytes < sizeof(*attr)) |
| 237 | return -1; |
| 238 | |
| 239 | oa->len = be16_to_cpu(attr->attr_bytes); |
| 240 | inc = _osd_req_alist_elem_size(or, oa->len); |
| 241 | if (inc > max_bytes) |
| 242 | return -1; |
| 243 | |
| 244 | oa->attr_page = be32_to_cpu(attr->attr_page); |
| 245 | oa->attr_id = be32_to_cpu(attr->attr_id); |
| 246 | |
| 247 | /* OSD1: On empty attributes we return a pointer to 2 bytes |
| 248 | * of zeros. This keeps similar behaviour with OSD2. |
| 249 | * (See below) |
| 250 | */ |
| 251 | oa->val_ptr = likely(oa->len) ? attr->attr_val : |
| 252 | (u8 *)&attr->attr_bytes; |
| 253 | } else { |
| 254 | struct osdv2_attributes_list_element *attr = cur_p; |
| 255 | |
| 256 | if (max_bytes < sizeof(*attr)) |
| 257 | return -1; |
| 258 | |
| 259 | oa->len = be16_to_cpu(attr->attr_bytes); |
| 260 | inc = _osd_req_alist_elem_size(or, oa->len); |
| 261 | if (inc > max_bytes) |
| 262 | return -1; |
| 263 | |
| 264 | oa->attr_page = be32_to_cpu(attr->attr_page); |
| 265 | oa->attr_id = be32_to_cpu(attr->attr_id); |
| 266 | |
Boaz Harrosh | e9da4d7 | 2009-04-19 19:17:54 +0300 | [diff] [blame] | 267 | /* OSD2: For convenience, on empty attributes, we return 8 bytes |
| 268 | * of zeros here. This keeps the same behaviour with OSD2r04, |
| 269 | * and is nice with null terminating ASCII fields. |
| 270 | * oa->val_ptr == NULL marks the end-of-list, or error. |
| 271 | */ |
| 272 | oa->val_ptr = likely(oa->len) ? attr->attr_val : attr->reserved; |
Boaz Harrosh | 71f32e3 | 2009-04-19 19:11:42 +0300 | [diff] [blame] | 273 | } |
| 274 | return inc; |
| 275 | } |
| 276 | |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 277 | static unsigned _osd_req_alist_size(struct osd_request *or, void *list_head) |
| 278 | { |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 279 | return osd_req_is_ver1(or) ? |
| 280 | osdv1_list_size(list_head) : |
| 281 | osdv2_list_size(list_head); |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 282 | } |
| 283 | |
| 284 | static unsigned _osd_req_sizeof_alist_header(struct osd_request *or) |
| 285 | { |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 286 | return osd_req_is_ver1(or) ? |
| 287 | sizeof(struct osdv1_attributes_list_header) : |
| 288 | sizeof(struct osdv2_attributes_list_header); |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | static void _osd_req_set_alist_type(struct osd_request *or, |
| 292 | void *list, int list_type) |
| 293 | { |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 294 | if (osd_req_is_ver1(or)) { |
| 295 | struct osdv1_attributes_list_header *attr_list = list; |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 296 | |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 297 | memset(attr_list, 0, sizeof(*attr_list)); |
| 298 | attr_list->type = list_type; |
| 299 | } else { |
| 300 | struct osdv2_attributes_list_header *attr_list = list; |
| 301 | |
| 302 | memset(attr_list, 0, sizeof(*attr_list)); |
| 303 | attr_list->type = list_type; |
| 304 | } |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | static bool _osd_req_is_alist_type(struct osd_request *or, |
| 308 | void *list, int list_type) |
| 309 | { |
| 310 | if (!list) |
| 311 | return false; |
| 312 | |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 313 | if (osd_req_is_ver1(or)) { |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 314 | struct osdv1_attributes_list_header *attr_list = list; |
| 315 | |
| 316 | return attr_list->type == list_type; |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 317 | } else { |
| 318 | struct osdv2_attributes_list_header *attr_list = list; |
| 319 | |
| 320 | return attr_list->type == list_type; |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 321 | } |
| 322 | } |
| 323 | |
Boaz Harrosh | 3e08613 | 2009-01-25 17:05:07 +0200 | [diff] [blame] | 324 | /* This is for List-objects not Attributes-Lists */ |
| 325 | static void _osd_req_encode_olist(struct osd_request *or, |
| 326 | struct osd_obj_id_list *list) |
| 327 | { |
| 328 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); |
| 329 | |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 330 | if (osd_req_is_ver1(or)) { |
| 331 | cdbh->v1.list_identifier = list->list_identifier; |
| 332 | cdbh->v1.start_address = list->continuation_id; |
| 333 | } else { |
| 334 | cdbh->v2.list_identifier = list->list_identifier; |
| 335 | cdbh->v2.start_address = list->continuation_id; |
| 336 | } |
Boaz Harrosh | 3e08613 | 2009-01-25 17:05:07 +0200 | [diff] [blame] | 337 | } |
| 338 | |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 339 | static osd_cdb_offset osd_req_encode_offset(struct osd_request *or, |
| 340 | u64 offset, unsigned *padding) |
| 341 | { |
| 342 | return __osd_encode_offset(offset, padding, |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 343 | osd_req_is_ver1(or) ? |
| 344 | OSDv1_OFFSET_MIN_SHIFT : OSD_OFFSET_MIN_SHIFT, |
| 345 | OSD_OFFSET_MAX_SHIFT); |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 346 | } |
| 347 | |
Boaz Harrosh | 345c435 | 2009-01-25 17:03:07 +0200 | [diff] [blame] | 348 | static struct osd_security_parameters * |
| 349 | _osd_req_sec_params(struct osd_request *or) |
| 350 | { |
| 351 | struct osd_cdb *ocdb = &or->cdb; |
| 352 | |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 353 | if (osd_req_is_ver1(or)) |
Boaz Harrosh | f8d3a64 | 2009-04-19 19:13:39 +0300 | [diff] [blame] | 354 | return (struct osd_security_parameters *)&ocdb->v1.sec_params; |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 355 | else |
Boaz Harrosh | f8d3a64 | 2009-04-19 19:13:39 +0300 | [diff] [blame] | 356 | return (struct osd_security_parameters *)&ocdb->v2.sec_params; |
Boaz Harrosh | 345c435 | 2009-01-25 17:03:07 +0200 | [diff] [blame] | 357 | } |
| 358 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 359 | void osd_dev_init(struct osd_dev *osdd, struct scsi_device *scsi_device) |
| 360 | { |
| 361 | memset(osdd, 0, sizeof(*osdd)); |
| 362 | osdd->scsi_device = scsi_device; |
| 363 | osdd->def_timeout = BLK_DEFAULT_SG_TIMEOUT; |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 364 | #ifdef OSD_VER1_SUPPORT |
| 365 | osdd->version = OSD_VER2; |
| 366 | #endif |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 367 | /* TODO: Allocate pools for osd_request attributes ... */ |
| 368 | } |
| 369 | EXPORT_SYMBOL(osd_dev_init); |
| 370 | |
| 371 | void osd_dev_fini(struct osd_dev *osdd) |
| 372 | { |
| 373 | /* TODO: De-allocate pools */ |
| 374 | |
| 375 | osdd->scsi_device = NULL; |
| 376 | } |
| 377 | EXPORT_SYMBOL(osd_dev_fini); |
| 378 | |
| 379 | static struct osd_request *_osd_request_alloc(gfp_t gfp) |
| 380 | { |
| 381 | struct osd_request *or; |
| 382 | |
| 383 | /* TODO: Use mempool with one saved request */ |
| 384 | or = kzalloc(sizeof(*or), gfp); |
| 385 | return or; |
| 386 | } |
| 387 | |
| 388 | static void _osd_request_free(struct osd_request *or) |
| 389 | { |
| 390 | kfree(or); |
| 391 | } |
| 392 | |
| 393 | struct osd_request *osd_start_request(struct osd_dev *dev, gfp_t gfp) |
| 394 | { |
| 395 | struct osd_request *or; |
| 396 | |
| 397 | or = _osd_request_alloc(gfp); |
| 398 | if (!or) |
| 399 | return NULL; |
| 400 | |
| 401 | or->osd_dev = dev; |
| 402 | or->alloc_flags = gfp; |
| 403 | or->timeout = dev->def_timeout; |
| 404 | or->retries = OSD_REQ_RETRIES; |
| 405 | |
| 406 | return or; |
| 407 | } |
| 408 | EXPORT_SYMBOL(osd_start_request); |
| 409 | |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 410 | static void _osd_free_seg(struct osd_request *or __unused, |
| 411 | struct _osd_req_data_segment *seg) |
| 412 | { |
| 413 | if (!seg->buff || !seg->alloc_size) |
| 414 | return; |
| 415 | |
| 416 | kfree(seg->buff); |
| 417 | seg->buff = NULL; |
| 418 | seg->alloc_size = 0; |
| 419 | } |
| 420 | |
Boaz Harrosh | 8c0bacc | 2009-03-31 20:05:29 +0300 | [diff] [blame] | 421 | static void _put_request(struct request *rq , bool is_async) |
| 422 | { |
| 423 | if (is_async) { |
| 424 | WARN_ON(rq->bio); |
| 425 | __blk_put_request(rq->q, rq); |
| 426 | } else { |
| 427 | /* |
| 428 | * If osd_finalize_request() was called but the request was not |
| 429 | * executed through the block layer, then we must release BIOs. |
| 430 | * TODO: Keep error code in or->async_error. Need to audit all |
| 431 | * code paths. |
| 432 | */ |
| 433 | if (unlikely(rq->bio)) |
| 434 | blk_end_request(rq, -ENOMEM, blk_rq_bytes(rq)); |
| 435 | else |
| 436 | blk_put_request(rq); |
| 437 | } |
| 438 | } |
| 439 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 440 | void osd_end_request(struct osd_request *or) |
| 441 | { |
| 442 | struct request *rq = or->request; |
Boaz Harrosh | 8c0bacc | 2009-03-31 20:05:29 +0300 | [diff] [blame] | 443 | /* IMPORTANT: make sure this agrees with osd_execute_request_async */ |
| 444 | bool is_async = (or->request->end_io_data == or); |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 445 | |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 446 | _osd_free_seg(or, &or->set_attr); |
| 447 | _osd_free_seg(or, &or->enc_get_attr); |
| 448 | _osd_free_seg(or, &or->get_attr); |
| 449 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 450 | if (rq) { |
| 451 | if (rq->next_rq) { |
Boaz Harrosh | 8c0bacc | 2009-03-31 20:05:29 +0300 | [diff] [blame] | 452 | _put_request(rq->next_rq, is_async); |
| 453 | rq->next_rq = NULL; |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 454 | } |
| 455 | |
Boaz Harrosh | 8c0bacc | 2009-03-31 20:05:29 +0300 | [diff] [blame] | 456 | _put_request(rq, is_async); |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 457 | } |
| 458 | _osd_request_free(or); |
| 459 | } |
| 460 | EXPORT_SYMBOL(osd_end_request); |
| 461 | |
| 462 | int osd_execute_request(struct osd_request *or) |
| 463 | { |
| 464 | return blk_execute_rq(or->request->q, NULL, or->request, 0); |
| 465 | } |
| 466 | EXPORT_SYMBOL(osd_execute_request); |
| 467 | |
| 468 | static void osd_request_async_done(struct request *req, int error) |
| 469 | { |
| 470 | struct osd_request *or = req->end_io_data; |
| 471 | |
| 472 | or->async_error = error; |
| 473 | |
| 474 | if (error) |
| 475 | OSD_DEBUG("osd_request_async_done error recieved %d\n", error); |
| 476 | |
| 477 | if (or->async_done) |
| 478 | or->async_done(or, or->async_private); |
| 479 | else |
| 480 | osd_end_request(or); |
| 481 | } |
| 482 | |
| 483 | int osd_execute_request_async(struct osd_request *or, |
| 484 | osd_req_done_fn *done, void *private) |
| 485 | { |
| 486 | or->request->end_io_data = or; |
| 487 | or->async_private = private; |
| 488 | or->async_done = done; |
| 489 | |
| 490 | blk_execute_rq_nowait(or->request->q, NULL, or->request, 0, |
| 491 | osd_request_async_done); |
| 492 | return 0; |
| 493 | } |
| 494 | EXPORT_SYMBOL(osd_execute_request_async); |
| 495 | |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 496 | u8 sg_out_pad_buffer[1 << OSDv1_OFFSET_MIN_SHIFT]; |
| 497 | u8 sg_in_pad_buffer[1 << OSDv1_OFFSET_MIN_SHIFT]; |
| 498 | |
| 499 | static int _osd_realloc_seg(struct osd_request *or, |
| 500 | struct _osd_req_data_segment *seg, unsigned max_bytes) |
| 501 | { |
| 502 | void *buff; |
| 503 | |
| 504 | if (seg->alloc_size >= max_bytes) |
| 505 | return 0; |
| 506 | |
| 507 | buff = krealloc(seg->buff, max_bytes, or->alloc_flags); |
| 508 | if (!buff) { |
| 509 | OSD_ERR("Failed to Realloc %d-bytes was-%d\n", max_bytes, |
| 510 | seg->alloc_size); |
| 511 | return -ENOMEM; |
| 512 | } |
| 513 | |
| 514 | memset(buff + seg->alloc_size, 0, max_bytes - seg->alloc_size); |
| 515 | seg->buff = buff; |
| 516 | seg->alloc_size = max_bytes; |
| 517 | return 0; |
| 518 | } |
| 519 | |
| 520 | static int _alloc_set_attr_list(struct osd_request *or, |
| 521 | const struct osd_attr *oa, unsigned nelem, unsigned add_bytes) |
| 522 | { |
| 523 | unsigned total_bytes = add_bytes; |
| 524 | |
| 525 | for (; nelem; --nelem, ++oa) |
| 526 | total_bytes += _osd_req_alist_elem_size(or, oa->len); |
| 527 | |
| 528 | OSD_DEBUG("total_bytes=%d\n", total_bytes); |
| 529 | return _osd_realloc_seg(or, &or->set_attr, total_bytes); |
| 530 | } |
| 531 | |
| 532 | static int _alloc_get_attr_desc(struct osd_request *or, unsigned max_bytes) |
| 533 | { |
| 534 | OSD_DEBUG("total_bytes=%d\n", max_bytes); |
| 535 | return _osd_realloc_seg(or, &or->enc_get_attr, max_bytes); |
| 536 | } |
| 537 | |
| 538 | static int _alloc_get_attr_list(struct osd_request *or) |
| 539 | { |
| 540 | OSD_DEBUG("total_bytes=%d\n", or->get_attr.total_bytes); |
| 541 | return _osd_realloc_seg(or, &or->get_attr, or->get_attr.total_bytes); |
| 542 | } |
| 543 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 544 | /* |
| 545 | * Common to all OSD commands |
| 546 | */ |
| 547 | |
| 548 | static void _osdv1_req_encode_common(struct osd_request *or, |
| 549 | __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len) |
| 550 | { |
| 551 | struct osdv1_cdb *ocdb = &or->cdb.v1; |
| 552 | |
| 553 | /* |
| 554 | * For speed, the commands |
| 555 | * OSD_ACT_PERFORM_SCSI_COMMAND , V1 0x8F7E, V2 0x8F7C |
| 556 | * OSD_ACT_SCSI_TASK_MANAGEMENT , V1 0x8F7F, V2 0x8F7D |
| 557 | * are not supported here. Should pass zero and set after the call |
| 558 | */ |
| 559 | act &= cpu_to_be16(~0x0080); /* V1 action code */ |
| 560 | |
| 561 | OSD_DEBUG("OSDv1 execute opcode 0x%x\n", be16_to_cpu(act)); |
| 562 | |
| 563 | ocdb->h.varlen_cdb.opcode = VARIABLE_LENGTH_CMD; |
| 564 | ocdb->h.varlen_cdb.additional_cdb_length = OSD_ADDITIONAL_CDB_LENGTH; |
| 565 | ocdb->h.varlen_cdb.service_action = act; |
| 566 | |
| 567 | ocdb->h.partition = cpu_to_be64(obj->partition); |
| 568 | ocdb->h.object = cpu_to_be64(obj->id); |
| 569 | ocdb->h.v1.length = cpu_to_be64(len); |
| 570 | ocdb->h.v1.start_address = cpu_to_be64(offset); |
| 571 | } |
| 572 | |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 573 | static void _osdv2_req_encode_common(struct osd_request *or, |
| 574 | __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len) |
| 575 | { |
| 576 | struct osdv2_cdb *ocdb = &or->cdb.v2; |
| 577 | |
| 578 | OSD_DEBUG("OSDv2 execute opcode 0x%x\n", be16_to_cpu(act)); |
| 579 | |
| 580 | ocdb->h.varlen_cdb.opcode = VARIABLE_LENGTH_CMD; |
| 581 | ocdb->h.varlen_cdb.additional_cdb_length = OSD_ADDITIONAL_CDB_LENGTH; |
| 582 | ocdb->h.varlen_cdb.service_action = act; |
| 583 | |
| 584 | ocdb->h.partition = cpu_to_be64(obj->partition); |
| 585 | ocdb->h.object = cpu_to_be64(obj->id); |
| 586 | ocdb->h.v2.length = cpu_to_be64(len); |
| 587 | ocdb->h.v2.start_address = cpu_to_be64(offset); |
| 588 | } |
| 589 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 590 | static void _osd_req_encode_common(struct osd_request *or, |
| 591 | __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len) |
| 592 | { |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 593 | if (osd_req_is_ver1(or)) |
| 594 | _osdv1_req_encode_common(or, act, obj, offset, len); |
| 595 | else |
| 596 | _osdv2_req_encode_common(or, act, obj, offset, len); |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 597 | } |
| 598 | |
| 599 | /* |
| 600 | * Device commands |
| 601 | */ |
Boaz Harrosh | ae30c99 | 2009-01-25 17:07:14 +0200 | [diff] [blame] | 602 | /*TODO: void osd_req_set_master_seed_xchg(struct osd_request *, ...); */ |
| 603 | /*TODO: void osd_req_set_master_key(struct osd_request *, ...); */ |
| 604 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 605 | void osd_req_format(struct osd_request *or, u64 tot_capacity) |
| 606 | { |
| 607 | _osd_req_encode_common(or, OSD_ACT_FORMAT_OSD, &osd_root_object, 0, |
| 608 | tot_capacity); |
| 609 | } |
| 610 | EXPORT_SYMBOL(osd_req_format); |
| 611 | |
Boaz Harrosh | 3e08613 | 2009-01-25 17:05:07 +0200 | [diff] [blame] | 612 | int osd_req_list_dev_partitions(struct osd_request *or, |
| 613 | osd_id initial_id, struct osd_obj_id_list *list, unsigned nelem) |
| 614 | { |
| 615 | return osd_req_list_partition_objects(or, 0, initial_id, list, nelem); |
| 616 | } |
| 617 | EXPORT_SYMBOL(osd_req_list_dev_partitions); |
| 618 | |
| 619 | static void _osd_req_encode_flush(struct osd_request *or, |
| 620 | enum osd_options_flush_scope_values op) |
| 621 | { |
| 622 | struct osd_cdb_head *ocdb = osd_cdb_head(&or->cdb); |
| 623 | |
| 624 | ocdb->command_specific_options = op; |
| 625 | } |
| 626 | |
| 627 | void osd_req_flush_obsd(struct osd_request *or, |
| 628 | enum osd_options_flush_scope_values op) |
| 629 | { |
| 630 | _osd_req_encode_common(or, OSD_ACT_FLUSH_OSD, &osd_root_object, 0, 0); |
| 631 | _osd_req_encode_flush(or, op); |
| 632 | } |
| 633 | EXPORT_SYMBOL(osd_req_flush_obsd); |
| 634 | |
Boaz Harrosh | ae30c99 | 2009-01-25 17:07:14 +0200 | [diff] [blame] | 635 | /*TODO: void osd_req_perform_scsi_command(struct osd_request *, |
| 636 | const u8 *cdb, ...); */ |
| 637 | /*TODO: void osd_req_task_management(struct osd_request *, ...); */ |
| 638 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 639 | /* |
| 640 | * Partition commands |
| 641 | */ |
| 642 | static void _osd_req_encode_partition(struct osd_request *or, |
| 643 | __be16 act, osd_id partition) |
| 644 | { |
| 645 | struct osd_obj_id par = { |
| 646 | .partition = partition, |
| 647 | .id = 0, |
| 648 | }; |
| 649 | |
| 650 | _osd_req_encode_common(or, act, &par, 0, 0); |
| 651 | } |
| 652 | |
| 653 | void osd_req_create_partition(struct osd_request *or, osd_id partition) |
| 654 | { |
| 655 | _osd_req_encode_partition(or, OSD_ACT_CREATE_PARTITION, partition); |
| 656 | } |
| 657 | EXPORT_SYMBOL(osd_req_create_partition); |
| 658 | |
| 659 | void osd_req_remove_partition(struct osd_request *or, osd_id partition) |
| 660 | { |
| 661 | _osd_req_encode_partition(or, OSD_ACT_REMOVE_PARTITION, partition); |
| 662 | } |
| 663 | EXPORT_SYMBOL(osd_req_remove_partition); |
| 664 | |
Boaz Harrosh | ae30c99 | 2009-01-25 17:07:14 +0200 | [diff] [blame] | 665 | /*TODO: void osd_req_set_partition_key(struct osd_request *, |
| 666 | osd_id partition, u8 new_key_id[OSD_CRYPTO_KEYID_SIZE], |
| 667 | u8 seed[OSD_CRYPTO_SEED_SIZE]); */ |
| 668 | |
Boaz Harrosh | 3e08613 | 2009-01-25 17:05:07 +0200 | [diff] [blame] | 669 | static int _osd_req_list_objects(struct osd_request *or, |
| 670 | __be16 action, const struct osd_obj_id *obj, osd_id initial_id, |
| 671 | struct osd_obj_id_list *list, unsigned nelem) |
| 672 | { |
| 673 | struct request_queue *q = or->osd_dev->scsi_device->request_queue; |
| 674 | u64 len = nelem * sizeof(osd_id) + sizeof(*list); |
| 675 | struct bio *bio; |
| 676 | |
| 677 | _osd_req_encode_common(or, action, obj, (u64)initial_id, len); |
| 678 | |
| 679 | if (list->list_identifier) |
| 680 | _osd_req_encode_olist(or, list); |
| 681 | |
| 682 | WARN_ON(or->in.bio); |
| 683 | bio = bio_map_kern(q, list, len, or->alloc_flags); |
Dan Carpenter | bf5e84f | 2009-04-19 19:07:47 +0300 | [diff] [blame] | 684 | if (IS_ERR(bio)) { |
Boaz Harrosh | 3e08613 | 2009-01-25 17:05:07 +0200 | [diff] [blame] | 685 | OSD_ERR("!!! Failed to allocate list_objects BIO\n"); |
Dan Carpenter | bf5e84f | 2009-04-19 19:07:47 +0300 | [diff] [blame] | 686 | return PTR_ERR(bio); |
Boaz Harrosh | 3e08613 | 2009-01-25 17:05:07 +0200 | [diff] [blame] | 687 | } |
| 688 | |
| 689 | bio->bi_rw &= ~(1 << BIO_RW); |
| 690 | or->in.bio = bio; |
| 691 | or->in.total_bytes = bio->bi_size; |
| 692 | return 0; |
| 693 | } |
| 694 | |
| 695 | int osd_req_list_partition_collections(struct osd_request *or, |
| 696 | osd_id partition, osd_id initial_id, struct osd_obj_id_list *list, |
| 697 | unsigned nelem) |
| 698 | { |
| 699 | struct osd_obj_id par = { |
| 700 | .partition = partition, |
| 701 | .id = 0, |
| 702 | }; |
| 703 | |
| 704 | return osd_req_list_collection_objects(or, &par, initial_id, list, |
| 705 | nelem); |
| 706 | } |
| 707 | EXPORT_SYMBOL(osd_req_list_partition_collections); |
| 708 | |
| 709 | int osd_req_list_partition_objects(struct osd_request *or, |
| 710 | osd_id partition, osd_id initial_id, struct osd_obj_id_list *list, |
| 711 | unsigned nelem) |
| 712 | { |
| 713 | struct osd_obj_id par = { |
| 714 | .partition = partition, |
| 715 | .id = 0, |
| 716 | }; |
| 717 | |
| 718 | return _osd_req_list_objects(or, OSD_ACT_LIST, &par, initial_id, list, |
| 719 | nelem); |
| 720 | } |
| 721 | EXPORT_SYMBOL(osd_req_list_partition_objects); |
| 722 | |
| 723 | void osd_req_flush_partition(struct osd_request *or, |
| 724 | osd_id partition, enum osd_options_flush_scope_values op) |
| 725 | { |
| 726 | _osd_req_encode_partition(or, OSD_ACT_FLUSH_PARTITION, partition); |
| 727 | _osd_req_encode_flush(or, op); |
| 728 | } |
| 729 | EXPORT_SYMBOL(osd_req_flush_partition); |
| 730 | |
| 731 | /* |
| 732 | * Collection commands |
| 733 | */ |
Boaz Harrosh | ae30c99 | 2009-01-25 17:07:14 +0200 | [diff] [blame] | 734 | /*TODO: void osd_req_create_collection(struct osd_request *, |
| 735 | const struct osd_obj_id *); */ |
| 736 | /*TODO: void osd_req_remove_collection(struct osd_request *, |
| 737 | const struct osd_obj_id *); */ |
| 738 | |
Boaz Harrosh | 3e08613 | 2009-01-25 17:05:07 +0200 | [diff] [blame] | 739 | int osd_req_list_collection_objects(struct osd_request *or, |
| 740 | const struct osd_obj_id *obj, osd_id initial_id, |
| 741 | struct osd_obj_id_list *list, unsigned nelem) |
| 742 | { |
| 743 | return _osd_req_list_objects(or, OSD_ACT_LIST_COLLECTION, obj, |
| 744 | initial_id, list, nelem); |
| 745 | } |
| 746 | EXPORT_SYMBOL(osd_req_list_collection_objects); |
| 747 | |
Boaz Harrosh | ae30c99 | 2009-01-25 17:07:14 +0200 | [diff] [blame] | 748 | /*TODO: void query(struct osd_request *, ...); V2 */ |
| 749 | |
Boaz Harrosh | 3e08613 | 2009-01-25 17:05:07 +0200 | [diff] [blame] | 750 | void osd_req_flush_collection(struct osd_request *or, |
| 751 | const struct osd_obj_id *obj, enum osd_options_flush_scope_values op) |
| 752 | { |
| 753 | _osd_req_encode_common(or, OSD_ACT_FLUSH_PARTITION, obj, 0, 0); |
| 754 | _osd_req_encode_flush(or, op); |
| 755 | } |
| 756 | EXPORT_SYMBOL(osd_req_flush_collection); |
| 757 | |
Boaz Harrosh | ae30c99 | 2009-01-25 17:07:14 +0200 | [diff] [blame] | 758 | /*TODO: void get_member_attrs(struct osd_request *, ...); V2 */ |
| 759 | /*TODO: void set_member_attrs(struct osd_request *, ...); V2 */ |
| 760 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 761 | /* |
| 762 | * Object commands |
| 763 | */ |
| 764 | void osd_req_create_object(struct osd_request *or, struct osd_obj_id *obj) |
| 765 | { |
| 766 | _osd_req_encode_common(or, OSD_ACT_CREATE, obj, 0, 0); |
| 767 | } |
| 768 | EXPORT_SYMBOL(osd_req_create_object); |
| 769 | |
| 770 | void osd_req_remove_object(struct osd_request *or, struct osd_obj_id *obj) |
| 771 | { |
| 772 | _osd_req_encode_common(or, OSD_ACT_REMOVE, obj, 0, 0); |
| 773 | } |
| 774 | EXPORT_SYMBOL(osd_req_remove_object); |
| 775 | |
Boaz Harrosh | ae30c99 | 2009-01-25 17:07:14 +0200 | [diff] [blame] | 776 | |
| 777 | /*TODO: void osd_req_create_multi(struct osd_request *or, |
| 778 | struct osd_obj_id *first, struct osd_obj_id_list *list, unsigned nelem); |
| 779 | */ |
| 780 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 781 | void osd_req_write(struct osd_request *or, |
Boaz Harrosh | 62f469b | 2009-05-24 20:04:26 +0300 | [diff] [blame^] | 782 | const struct osd_obj_id *obj, u64 offset, |
| 783 | struct bio *bio, u64 len) |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 784 | { |
Boaz Harrosh | 62f469b | 2009-05-24 20:04:26 +0300 | [diff] [blame^] | 785 | _osd_req_encode_common(or, OSD_ACT_WRITE, obj, offset, len); |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 786 | WARN_ON(or->out.bio || or->out.total_bytes); |
Boaz Harrosh | 62f469b | 2009-05-24 20:04:26 +0300 | [diff] [blame^] | 787 | WARN_ON(0 == bio_rw_flagged(bio, BIO_RW)); |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 788 | or->out.bio = bio; |
Boaz Harrosh | 62f469b | 2009-05-24 20:04:26 +0300 | [diff] [blame^] | 789 | or->out.total_bytes = len; |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 790 | } |
| 791 | EXPORT_SYMBOL(osd_req_write); |
| 792 | |
Boaz Harrosh | 0e35afb | 2009-05-24 20:02:22 +0300 | [diff] [blame] | 793 | int osd_req_write_kern(struct osd_request *or, |
| 794 | const struct osd_obj_id *obj, u64 offset, void* buff, u64 len) |
| 795 | { |
| 796 | struct request_queue *req_q = or->osd_dev->scsi_device->request_queue; |
| 797 | struct bio *bio = bio_map_kern(req_q, buff, len, GFP_KERNEL); |
| 798 | |
| 799 | if (IS_ERR(bio)) |
| 800 | return PTR_ERR(bio); |
| 801 | |
Boaz Harrosh | 62f469b | 2009-05-24 20:04:26 +0300 | [diff] [blame^] | 802 | bio->bi_rw |= (1 << BIO_RW); /* FIXME: bio_set_dir() */ |
| 803 | osd_req_write(or, obj, offset, bio, len); |
Boaz Harrosh | 0e35afb | 2009-05-24 20:02:22 +0300 | [diff] [blame] | 804 | return 0; |
| 805 | } |
| 806 | EXPORT_SYMBOL(osd_req_write_kern); |
| 807 | |
Boaz Harrosh | ae30c99 | 2009-01-25 17:07:14 +0200 | [diff] [blame] | 808 | /*TODO: void osd_req_append(struct osd_request *, |
| 809 | const struct osd_obj_id *, struct bio *data_out); */ |
| 810 | /*TODO: void osd_req_create_write(struct osd_request *, |
| 811 | const struct osd_obj_id *, struct bio *data_out, u64 offset); */ |
| 812 | /*TODO: void osd_req_clear(struct osd_request *, |
| 813 | const struct osd_obj_id *, u64 offset, u64 len); */ |
| 814 | /*TODO: void osd_req_punch(struct osd_request *, |
| 815 | const struct osd_obj_id *, u64 offset, u64 len); V2 */ |
| 816 | |
Boaz Harrosh | 3e08613 | 2009-01-25 17:05:07 +0200 | [diff] [blame] | 817 | void osd_req_flush_object(struct osd_request *or, |
| 818 | const struct osd_obj_id *obj, enum osd_options_flush_scope_values op, |
| 819 | /*V2*/ u64 offset, /*V2*/ u64 len) |
| 820 | { |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 821 | if (unlikely(osd_req_is_ver1(or) && (offset || len))) { |
| 822 | OSD_DEBUG("OSD Ver1 flush on specific range ignored\n"); |
| 823 | offset = 0; |
| 824 | len = 0; |
| 825 | } |
| 826 | |
Boaz Harrosh | 3e08613 | 2009-01-25 17:05:07 +0200 | [diff] [blame] | 827 | _osd_req_encode_common(or, OSD_ACT_FLUSH, obj, offset, len); |
| 828 | _osd_req_encode_flush(or, op); |
| 829 | } |
| 830 | EXPORT_SYMBOL(osd_req_flush_object); |
| 831 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 832 | void osd_req_read(struct osd_request *or, |
Boaz Harrosh | 62f469b | 2009-05-24 20:04:26 +0300 | [diff] [blame^] | 833 | const struct osd_obj_id *obj, u64 offset, |
| 834 | struct bio *bio, u64 len) |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 835 | { |
Boaz Harrosh | 62f469b | 2009-05-24 20:04:26 +0300 | [diff] [blame^] | 836 | _osd_req_encode_common(or, OSD_ACT_READ, obj, offset, len); |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 837 | WARN_ON(or->in.bio || or->in.total_bytes); |
Boaz Harrosh | 62f469b | 2009-05-24 20:04:26 +0300 | [diff] [blame^] | 838 | WARN_ON(1 == bio_rw_flagged(bio, BIO_RW)); |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 839 | or->in.bio = bio; |
Boaz Harrosh | 62f469b | 2009-05-24 20:04:26 +0300 | [diff] [blame^] | 840 | or->in.total_bytes = len; |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 841 | } |
| 842 | EXPORT_SYMBOL(osd_req_read); |
| 843 | |
Boaz Harrosh | 0e35afb | 2009-05-24 20:02:22 +0300 | [diff] [blame] | 844 | int osd_req_read_kern(struct osd_request *or, |
| 845 | const struct osd_obj_id *obj, u64 offset, void* buff, u64 len) |
| 846 | { |
| 847 | struct request_queue *req_q = or->osd_dev->scsi_device->request_queue; |
| 848 | struct bio *bio = bio_map_kern(req_q, buff, len, GFP_KERNEL); |
| 849 | |
| 850 | if (IS_ERR(bio)) |
| 851 | return PTR_ERR(bio); |
| 852 | |
Boaz Harrosh | 62f469b | 2009-05-24 20:04:26 +0300 | [diff] [blame^] | 853 | osd_req_read(or, obj, offset, bio, len); |
Boaz Harrosh | 0e35afb | 2009-05-24 20:02:22 +0300 | [diff] [blame] | 854 | return 0; |
| 855 | } |
| 856 | EXPORT_SYMBOL(osd_req_read_kern); |
| 857 | |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 858 | void osd_req_get_attributes(struct osd_request *or, |
| 859 | const struct osd_obj_id *obj) |
| 860 | { |
| 861 | _osd_req_encode_common(or, OSD_ACT_GET_ATTRIBUTES, obj, 0, 0); |
| 862 | } |
| 863 | EXPORT_SYMBOL(osd_req_get_attributes); |
| 864 | |
| 865 | void osd_req_set_attributes(struct osd_request *or, |
| 866 | const struct osd_obj_id *obj) |
| 867 | { |
| 868 | _osd_req_encode_common(or, OSD_ACT_SET_ATTRIBUTES, obj, 0, 0); |
| 869 | } |
| 870 | EXPORT_SYMBOL(osd_req_set_attributes); |
| 871 | |
| 872 | /* |
| 873 | * Attributes List-mode |
| 874 | */ |
| 875 | |
| 876 | int osd_req_add_set_attr_list(struct osd_request *or, |
| 877 | const struct osd_attr *oa, unsigned nelem) |
| 878 | { |
| 879 | unsigned total_bytes = or->set_attr.total_bytes; |
| 880 | void *attr_last; |
| 881 | int ret; |
| 882 | |
| 883 | if (or->attributes_mode && |
| 884 | or->attributes_mode != OSD_CDB_GET_SET_ATTR_LISTS) { |
| 885 | WARN_ON(1); |
| 886 | return -EINVAL; |
| 887 | } |
| 888 | or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS; |
| 889 | |
| 890 | if (!total_bytes) { /* first-time: allocate and put list header */ |
| 891 | total_bytes = _osd_req_sizeof_alist_header(or); |
| 892 | ret = _alloc_set_attr_list(or, oa, nelem, total_bytes); |
| 893 | if (ret) |
| 894 | return ret; |
| 895 | _osd_req_set_alist_type(or, or->set_attr.buff, |
| 896 | OSD_ATTR_LIST_SET_RETRIEVE); |
| 897 | } |
| 898 | attr_last = or->set_attr.buff + total_bytes; |
| 899 | |
| 900 | for (; nelem; --nelem) { |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 901 | unsigned elem_size = _osd_req_alist_elem_size(or, oa->len); |
| 902 | |
| 903 | total_bytes += elem_size; |
| 904 | if (unlikely(or->set_attr.alloc_size < total_bytes)) { |
| 905 | or->set_attr.total_bytes = total_bytes - elem_size; |
| 906 | ret = _alloc_set_attr_list(or, oa, nelem, total_bytes); |
| 907 | if (ret) |
| 908 | return ret; |
| 909 | attr_last = |
| 910 | or->set_attr.buff + or->set_attr.total_bytes; |
| 911 | } |
| 912 | |
Boaz Harrosh | 71f32e3 | 2009-04-19 19:11:42 +0300 | [diff] [blame] | 913 | _osd_req_alist_elem_encode(or, attr_last, oa); |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 914 | |
| 915 | attr_last += elem_size; |
| 916 | ++oa; |
| 917 | } |
| 918 | |
| 919 | or->set_attr.total_bytes = total_bytes; |
| 920 | return 0; |
| 921 | } |
| 922 | EXPORT_SYMBOL(osd_req_add_set_attr_list); |
| 923 | |
| 924 | static int _append_map_kern(struct request *req, |
| 925 | void *buff, unsigned len, gfp_t flags) |
| 926 | { |
| 927 | struct bio *bio; |
| 928 | int ret; |
| 929 | |
| 930 | bio = bio_map_kern(req->q, buff, len, flags); |
| 931 | if (IS_ERR(bio)) { |
| 932 | OSD_ERR("Failed bio_map_kern(%p, %d) => %ld\n", buff, len, |
| 933 | PTR_ERR(bio)); |
| 934 | return PTR_ERR(bio); |
| 935 | } |
| 936 | ret = blk_rq_append_bio(req->q, req, bio); |
| 937 | if (ret) { |
| 938 | OSD_ERR("Failed blk_rq_append_bio(%p) => %d\n", bio, ret); |
| 939 | bio_put(bio); |
| 940 | } |
| 941 | return ret; |
| 942 | } |
| 943 | |
| 944 | static int _req_append_segment(struct osd_request *or, |
| 945 | unsigned padding, struct _osd_req_data_segment *seg, |
| 946 | struct _osd_req_data_segment *last_seg, struct _osd_io_info *io) |
| 947 | { |
| 948 | void *pad_buff; |
| 949 | int ret; |
| 950 | |
| 951 | if (padding) { |
| 952 | /* check if we can just add it to last buffer */ |
| 953 | if (last_seg && |
| 954 | (padding <= last_seg->alloc_size - last_seg->total_bytes)) |
| 955 | pad_buff = last_seg->buff + last_seg->total_bytes; |
| 956 | else |
| 957 | pad_buff = io->pad_buff; |
| 958 | |
| 959 | ret = _append_map_kern(io->req, pad_buff, padding, |
| 960 | or->alloc_flags); |
| 961 | if (ret) |
| 962 | return ret; |
| 963 | io->total_bytes += padding; |
| 964 | } |
| 965 | |
| 966 | ret = _append_map_kern(io->req, seg->buff, seg->total_bytes, |
| 967 | or->alloc_flags); |
| 968 | if (ret) |
| 969 | return ret; |
| 970 | |
| 971 | io->total_bytes += seg->total_bytes; |
| 972 | OSD_DEBUG("padding=%d buff=%p total_bytes=%d\n", padding, seg->buff, |
| 973 | seg->total_bytes); |
| 974 | return 0; |
| 975 | } |
| 976 | |
| 977 | static int _osd_req_finalize_set_attr_list(struct osd_request *or) |
| 978 | { |
| 979 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); |
| 980 | unsigned padding; |
| 981 | int ret; |
| 982 | |
| 983 | if (!or->set_attr.total_bytes) { |
| 984 | cdbh->attrs_list.set_attr_offset = OSD_OFFSET_UNUSED; |
| 985 | return 0; |
| 986 | } |
| 987 | |
| 988 | cdbh->attrs_list.set_attr_bytes = cpu_to_be32(or->set_attr.total_bytes); |
| 989 | cdbh->attrs_list.set_attr_offset = |
| 990 | osd_req_encode_offset(or, or->out.total_bytes, &padding); |
| 991 | |
| 992 | ret = _req_append_segment(or, padding, &or->set_attr, |
| 993 | or->out.last_seg, &or->out); |
| 994 | if (ret) |
| 995 | return ret; |
| 996 | |
| 997 | or->out.last_seg = &or->set_attr; |
| 998 | return 0; |
| 999 | } |
| 1000 | |
| 1001 | int osd_req_add_get_attr_list(struct osd_request *or, |
| 1002 | const struct osd_attr *oa, unsigned nelem) |
| 1003 | { |
| 1004 | unsigned total_bytes = or->enc_get_attr.total_bytes; |
| 1005 | void *attr_last; |
| 1006 | int ret; |
| 1007 | |
| 1008 | if (or->attributes_mode && |
| 1009 | or->attributes_mode != OSD_CDB_GET_SET_ATTR_LISTS) { |
| 1010 | WARN_ON(1); |
| 1011 | return -EINVAL; |
| 1012 | } |
| 1013 | or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS; |
| 1014 | |
| 1015 | /* first time calc data-in list header size */ |
| 1016 | if (!or->get_attr.total_bytes) |
| 1017 | or->get_attr.total_bytes = _osd_req_sizeof_alist_header(or); |
| 1018 | |
| 1019 | /* calc data-out info */ |
| 1020 | if (!total_bytes) { /* first-time: allocate and put list header */ |
| 1021 | unsigned max_bytes; |
| 1022 | |
| 1023 | total_bytes = _osd_req_sizeof_alist_header(or); |
| 1024 | max_bytes = total_bytes + |
| 1025 | nelem * sizeof(struct osd_attributes_list_attrid); |
| 1026 | ret = _alloc_get_attr_desc(or, max_bytes); |
| 1027 | if (ret) |
| 1028 | return ret; |
| 1029 | |
| 1030 | _osd_req_set_alist_type(or, or->enc_get_attr.buff, |
| 1031 | OSD_ATTR_LIST_GET); |
| 1032 | } |
| 1033 | attr_last = or->enc_get_attr.buff + total_bytes; |
| 1034 | |
| 1035 | for (; nelem; --nelem) { |
| 1036 | struct osd_attributes_list_attrid *attrid; |
| 1037 | const unsigned cur_size = sizeof(*attrid); |
| 1038 | |
| 1039 | total_bytes += cur_size; |
| 1040 | if (unlikely(or->enc_get_attr.alloc_size < total_bytes)) { |
| 1041 | or->enc_get_attr.total_bytes = total_bytes - cur_size; |
| 1042 | ret = _alloc_get_attr_desc(or, |
| 1043 | total_bytes + nelem * sizeof(*attrid)); |
| 1044 | if (ret) |
| 1045 | return ret; |
| 1046 | attr_last = or->enc_get_attr.buff + |
| 1047 | or->enc_get_attr.total_bytes; |
| 1048 | } |
| 1049 | |
| 1050 | attrid = attr_last; |
| 1051 | attrid->attr_page = cpu_to_be32(oa->attr_page); |
| 1052 | attrid->attr_id = cpu_to_be32(oa->attr_id); |
| 1053 | |
| 1054 | attr_last += cur_size; |
| 1055 | |
| 1056 | /* calc data-in size */ |
| 1057 | or->get_attr.total_bytes += |
| 1058 | _osd_req_alist_elem_size(or, oa->len); |
| 1059 | ++oa; |
| 1060 | } |
| 1061 | |
| 1062 | or->enc_get_attr.total_bytes = total_bytes; |
| 1063 | |
| 1064 | OSD_DEBUG( |
| 1065 | "get_attr.total_bytes=%u(%u) enc_get_attr.total_bytes=%u(%Zu)\n", |
| 1066 | or->get_attr.total_bytes, |
| 1067 | or->get_attr.total_bytes - _osd_req_sizeof_alist_header(or), |
| 1068 | or->enc_get_attr.total_bytes, |
| 1069 | (or->enc_get_attr.total_bytes - _osd_req_sizeof_alist_header(or)) |
| 1070 | / sizeof(struct osd_attributes_list_attrid)); |
| 1071 | |
| 1072 | return 0; |
| 1073 | } |
| 1074 | EXPORT_SYMBOL(osd_req_add_get_attr_list); |
| 1075 | |
| 1076 | static int _osd_req_finalize_get_attr_list(struct osd_request *or) |
| 1077 | { |
| 1078 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); |
| 1079 | unsigned out_padding; |
| 1080 | unsigned in_padding; |
| 1081 | int ret; |
| 1082 | |
| 1083 | if (!or->enc_get_attr.total_bytes) { |
| 1084 | cdbh->attrs_list.get_attr_desc_offset = OSD_OFFSET_UNUSED; |
| 1085 | cdbh->attrs_list.get_attr_offset = OSD_OFFSET_UNUSED; |
| 1086 | return 0; |
| 1087 | } |
| 1088 | |
| 1089 | ret = _alloc_get_attr_list(or); |
| 1090 | if (ret) |
| 1091 | return ret; |
| 1092 | |
| 1093 | /* The out-going buffer info update */ |
| 1094 | OSD_DEBUG("out-going\n"); |
| 1095 | cdbh->attrs_list.get_attr_desc_bytes = |
| 1096 | cpu_to_be32(or->enc_get_attr.total_bytes); |
| 1097 | |
| 1098 | cdbh->attrs_list.get_attr_desc_offset = |
| 1099 | osd_req_encode_offset(or, or->out.total_bytes, &out_padding); |
| 1100 | |
| 1101 | ret = _req_append_segment(or, out_padding, &or->enc_get_attr, |
| 1102 | or->out.last_seg, &or->out); |
| 1103 | if (ret) |
| 1104 | return ret; |
| 1105 | or->out.last_seg = &or->enc_get_attr; |
| 1106 | |
| 1107 | /* The incoming buffer info update */ |
| 1108 | OSD_DEBUG("in-coming\n"); |
| 1109 | cdbh->attrs_list.get_attr_alloc_length = |
| 1110 | cpu_to_be32(or->get_attr.total_bytes); |
| 1111 | |
| 1112 | cdbh->attrs_list.get_attr_offset = |
| 1113 | osd_req_encode_offset(or, or->in.total_bytes, &in_padding); |
| 1114 | |
| 1115 | ret = _req_append_segment(or, in_padding, &or->get_attr, NULL, |
| 1116 | &or->in); |
| 1117 | if (ret) |
| 1118 | return ret; |
| 1119 | or->in.last_seg = &or->get_attr; |
| 1120 | |
| 1121 | return 0; |
| 1122 | } |
| 1123 | |
| 1124 | int osd_req_decode_get_attr_list(struct osd_request *or, |
| 1125 | struct osd_attr *oa, int *nelem, void **iterator) |
| 1126 | { |
| 1127 | unsigned cur_bytes, returned_bytes; |
| 1128 | int n; |
| 1129 | const unsigned sizeof_attr_list = _osd_req_sizeof_alist_header(or); |
| 1130 | void *cur_p; |
| 1131 | |
| 1132 | if (!_osd_req_is_alist_type(or, or->get_attr.buff, |
| 1133 | OSD_ATTR_LIST_SET_RETRIEVE)) { |
| 1134 | oa->attr_page = 0; |
| 1135 | oa->attr_id = 0; |
| 1136 | oa->val_ptr = NULL; |
| 1137 | oa->len = 0; |
| 1138 | *iterator = NULL; |
| 1139 | return 0; |
| 1140 | } |
| 1141 | |
| 1142 | if (*iterator) { |
| 1143 | BUG_ON((*iterator < or->get_attr.buff) || |
| 1144 | (or->get_attr.buff + or->get_attr.alloc_size < *iterator)); |
| 1145 | cur_p = *iterator; |
| 1146 | cur_bytes = (*iterator - or->get_attr.buff) - sizeof_attr_list; |
| 1147 | returned_bytes = or->get_attr.total_bytes; |
| 1148 | } else { /* first time decode the list header */ |
| 1149 | cur_bytes = sizeof_attr_list; |
| 1150 | returned_bytes = _osd_req_alist_size(or, or->get_attr.buff) + |
| 1151 | sizeof_attr_list; |
| 1152 | |
| 1153 | cur_p = or->get_attr.buff + sizeof_attr_list; |
| 1154 | |
| 1155 | if (returned_bytes > or->get_attr.alloc_size) { |
| 1156 | OSD_DEBUG("target report: space was not big enough! " |
| 1157 | "Allocate=%u Needed=%u\n", |
| 1158 | or->get_attr.alloc_size, |
| 1159 | returned_bytes + sizeof_attr_list); |
| 1160 | |
| 1161 | returned_bytes = |
| 1162 | or->get_attr.alloc_size - sizeof_attr_list; |
| 1163 | } |
| 1164 | or->get_attr.total_bytes = returned_bytes; |
| 1165 | } |
| 1166 | |
| 1167 | for (n = 0; (n < *nelem) && (cur_bytes < returned_bytes); ++n) { |
Boaz Harrosh | 71f32e3 | 2009-04-19 19:11:42 +0300 | [diff] [blame] | 1168 | int inc = _osd_req_alist_elem_decode(or, cur_p, oa, |
| 1169 | returned_bytes - cur_bytes); |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 1170 | |
Boaz Harrosh | 71f32e3 | 2009-04-19 19:11:42 +0300 | [diff] [blame] | 1171 | if (inc < 0) { |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 1172 | OSD_ERR("BAD FOOD from target. list not valid!" |
| 1173 | "c=%d r=%d n=%d\n", |
| 1174 | cur_bytes, returned_bytes, n); |
| 1175 | oa->val_ptr = NULL; |
| 1176 | break; |
| 1177 | } |
| 1178 | |
Boaz Harrosh | 71f32e3 | 2009-04-19 19:11:42 +0300 | [diff] [blame] | 1179 | cur_bytes += inc; |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 1180 | cur_p += inc; |
| 1181 | ++oa; |
| 1182 | } |
| 1183 | |
| 1184 | *iterator = (returned_bytes - cur_bytes) ? cur_p : NULL; |
| 1185 | *nelem = n; |
| 1186 | return returned_bytes - cur_bytes; |
| 1187 | } |
| 1188 | EXPORT_SYMBOL(osd_req_decode_get_attr_list); |
| 1189 | |
| 1190 | /* |
| 1191 | * Attributes Page-mode |
| 1192 | */ |
| 1193 | |
| 1194 | int osd_req_add_get_attr_page(struct osd_request *or, |
| 1195 | u32 page_id, void *attar_page, unsigned max_page_len, |
| 1196 | const struct osd_attr *set_one_attr) |
| 1197 | { |
| 1198 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); |
| 1199 | |
| 1200 | if (or->attributes_mode && |
| 1201 | or->attributes_mode != OSD_CDB_GET_ATTR_PAGE_SET_ONE) { |
| 1202 | WARN_ON(1); |
| 1203 | return -EINVAL; |
| 1204 | } |
| 1205 | or->attributes_mode = OSD_CDB_GET_ATTR_PAGE_SET_ONE; |
| 1206 | |
| 1207 | or->get_attr.buff = attar_page; |
| 1208 | or->get_attr.total_bytes = max_page_len; |
| 1209 | |
| 1210 | or->set_attr.buff = set_one_attr->val_ptr; |
| 1211 | or->set_attr.total_bytes = set_one_attr->len; |
| 1212 | |
| 1213 | cdbh->attrs_page.get_attr_page = cpu_to_be32(page_id); |
| 1214 | cdbh->attrs_page.get_attr_alloc_length = cpu_to_be32(max_page_len); |
| 1215 | /* ocdb->attrs_page.get_attr_offset; */ |
| 1216 | |
| 1217 | cdbh->attrs_page.set_attr_page = cpu_to_be32(set_one_attr->attr_page); |
| 1218 | cdbh->attrs_page.set_attr_id = cpu_to_be32(set_one_attr->attr_id); |
| 1219 | cdbh->attrs_page.set_attr_length = cpu_to_be32(set_one_attr->len); |
| 1220 | /* ocdb->attrs_page.set_attr_offset; */ |
| 1221 | return 0; |
| 1222 | } |
| 1223 | EXPORT_SYMBOL(osd_req_add_get_attr_page); |
| 1224 | |
| 1225 | static int _osd_req_finalize_attr_page(struct osd_request *or) |
| 1226 | { |
| 1227 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); |
| 1228 | unsigned in_padding, out_padding; |
| 1229 | int ret; |
| 1230 | |
| 1231 | /* returned page */ |
| 1232 | cdbh->attrs_page.get_attr_offset = |
| 1233 | osd_req_encode_offset(or, or->in.total_bytes, &in_padding); |
| 1234 | |
| 1235 | ret = _req_append_segment(or, in_padding, &or->get_attr, NULL, |
| 1236 | &or->in); |
| 1237 | if (ret) |
| 1238 | return ret; |
| 1239 | |
| 1240 | /* set one value */ |
| 1241 | cdbh->attrs_page.set_attr_offset = |
| 1242 | osd_req_encode_offset(or, or->out.total_bytes, &out_padding); |
| 1243 | |
| 1244 | ret = _req_append_segment(or, out_padding, &or->enc_get_attr, NULL, |
| 1245 | &or->out); |
| 1246 | return ret; |
| 1247 | } |
| 1248 | |
Boaz Harrosh | f8d3a64 | 2009-04-19 19:13:39 +0300 | [diff] [blame] | 1249 | static inline void osd_sec_parms_set_out_offset(bool is_v1, |
| 1250 | struct osd_security_parameters *sec_parms, osd_cdb_offset offset) |
| 1251 | { |
| 1252 | if (is_v1) |
| 1253 | sec_parms->v1.data_out_integrity_check_offset = offset; |
| 1254 | else |
| 1255 | sec_parms->v2.data_out_integrity_check_offset = offset; |
| 1256 | } |
| 1257 | |
| 1258 | static inline void osd_sec_parms_set_in_offset(bool is_v1, |
| 1259 | struct osd_security_parameters *sec_parms, osd_cdb_offset offset) |
| 1260 | { |
| 1261 | if (is_v1) |
| 1262 | sec_parms->v1.data_in_integrity_check_offset = offset; |
| 1263 | else |
| 1264 | sec_parms->v2.data_in_integrity_check_offset = offset; |
| 1265 | } |
| 1266 | |
Boaz Harrosh | 345c435 | 2009-01-25 17:03:07 +0200 | [diff] [blame] | 1267 | static int _osd_req_finalize_data_integrity(struct osd_request *or, |
Boaz Harrosh | 546881a | 2009-05-24 20:04:00 +0300 | [diff] [blame] | 1268 | bool has_in, bool has_out, u64 out_data_bytes, const u8 *cap_key) |
Boaz Harrosh | 345c435 | 2009-01-25 17:03:07 +0200 | [diff] [blame] | 1269 | { |
| 1270 | struct osd_security_parameters *sec_parms = _osd_req_sec_params(or); |
| 1271 | int ret; |
| 1272 | |
| 1273 | if (!osd_is_sec_alldata(sec_parms)) |
| 1274 | return 0; |
| 1275 | |
| 1276 | if (has_out) { |
| 1277 | struct _osd_req_data_segment seg = { |
| 1278 | .buff = &or->out_data_integ, |
| 1279 | .total_bytes = sizeof(or->out_data_integ), |
| 1280 | }; |
| 1281 | unsigned pad; |
| 1282 | |
Boaz Harrosh | 546881a | 2009-05-24 20:04:00 +0300 | [diff] [blame] | 1283 | or->out_data_integ.data_bytes = cpu_to_be64(out_data_bytes); |
Boaz Harrosh | 345c435 | 2009-01-25 17:03:07 +0200 | [diff] [blame] | 1284 | or->out_data_integ.set_attributes_bytes = cpu_to_be64( |
| 1285 | or->set_attr.total_bytes); |
| 1286 | or->out_data_integ.get_attributes_bytes = cpu_to_be64( |
| 1287 | or->enc_get_attr.total_bytes); |
| 1288 | |
Boaz Harrosh | f8d3a64 | 2009-04-19 19:13:39 +0300 | [diff] [blame] | 1289 | osd_sec_parms_set_out_offset(osd_req_is_ver1(or), sec_parms, |
| 1290 | osd_req_encode_offset(or, or->out.total_bytes, &pad)); |
Boaz Harrosh | 345c435 | 2009-01-25 17:03:07 +0200 | [diff] [blame] | 1291 | |
| 1292 | ret = _req_append_segment(or, pad, &seg, or->out.last_seg, |
| 1293 | &or->out); |
| 1294 | if (ret) |
| 1295 | return ret; |
| 1296 | or->out.last_seg = NULL; |
| 1297 | |
| 1298 | /* they are now all chained to request sign them all together */ |
| 1299 | osd_sec_sign_data(&or->out_data_integ, or->out.req->bio, |
| 1300 | cap_key); |
| 1301 | } |
| 1302 | |
| 1303 | if (has_in) { |
| 1304 | struct _osd_req_data_segment seg = { |
| 1305 | .buff = &or->in_data_integ, |
| 1306 | .total_bytes = sizeof(or->in_data_integ), |
| 1307 | }; |
| 1308 | unsigned pad; |
| 1309 | |
Boaz Harrosh | f8d3a64 | 2009-04-19 19:13:39 +0300 | [diff] [blame] | 1310 | osd_sec_parms_set_in_offset(osd_req_is_ver1(or), sec_parms, |
| 1311 | osd_req_encode_offset(or, or->in.total_bytes, &pad)); |
Boaz Harrosh | 345c435 | 2009-01-25 17:03:07 +0200 | [diff] [blame] | 1312 | |
| 1313 | ret = _req_append_segment(or, pad, &seg, or->in.last_seg, |
| 1314 | &or->in); |
| 1315 | if (ret) |
| 1316 | return ret; |
| 1317 | |
| 1318 | or->in.last_seg = NULL; |
| 1319 | } |
| 1320 | |
| 1321 | return 0; |
| 1322 | } |
| 1323 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 1324 | /* |
| 1325 | * osd_finalize_request and helpers |
| 1326 | */ |
| 1327 | |
| 1328 | static int _init_blk_request(struct osd_request *or, |
| 1329 | bool has_in, bool has_out) |
| 1330 | { |
| 1331 | gfp_t flags = or->alloc_flags; |
| 1332 | struct scsi_device *scsi_device = or->osd_dev->scsi_device; |
| 1333 | struct request_queue *q = scsi_device->request_queue; |
| 1334 | struct request *req; |
| 1335 | int ret = -ENOMEM; |
| 1336 | |
| 1337 | req = blk_get_request(q, has_out, flags); |
| 1338 | if (!req) |
| 1339 | goto out; |
| 1340 | |
| 1341 | or->request = req; |
| 1342 | req->cmd_type = REQ_TYPE_BLOCK_PC; |
| 1343 | req->timeout = or->timeout; |
| 1344 | req->retries = or->retries; |
| 1345 | req->sense = or->sense; |
| 1346 | req->sense_len = 0; |
| 1347 | |
| 1348 | if (has_out) { |
| 1349 | or->out.req = req; |
| 1350 | if (has_in) { |
| 1351 | /* allocate bidi request */ |
| 1352 | req = blk_get_request(q, READ, flags); |
| 1353 | if (!req) { |
| 1354 | OSD_DEBUG("blk_get_request for bidi failed\n"); |
| 1355 | goto out; |
| 1356 | } |
| 1357 | req->cmd_type = REQ_TYPE_BLOCK_PC; |
| 1358 | or->in.req = or->request->next_rq = req; |
| 1359 | } |
| 1360 | } else if (has_in) |
| 1361 | or->in.req = req; |
| 1362 | |
| 1363 | ret = 0; |
| 1364 | out: |
| 1365 | OSD_DEBUG("or=%p has_in=%d has_out=%d => %d, %p\n", |
| 1366 | or, has_in, has_out, ret, or->request); |
| 1367 | return ret; |
| 1368 | } |
| 1369 | |
| 1370 | int osd_finalize_request(struct osd_request *or, |
| 1371 | u8 options, const void *cap, const u8 *cap_key) |
| 1372 | { |
| 1373 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); |
| 1374 | bool has_in, has_out; |
Boaz Harrosh | 546881a | 2009-05-24 20:04:00 +0300 | [diff] [blame] | 1375 | u64 out_data_bytes = or->out.total_bytes; |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 1376 | int ret; |
| 1377 | |
| 1378 | if (options & OSD_REQ_FUA) |
| 1379 | cdbh->options |= OSD_CDB_FUA; |
| 1380 | |
| 1381 | if (options & OSD_REQ_DPO) |
| 1382 | cdbh->options |= OSD_CDB_DPO; |
| 1383 | |
| 1384 | if (options & OSD_REQ_BYPASS_TIMESTAMPS) |
| 1385 | cdbh->timestamp_control = OSD_CDB_BYPASS_TIMESTAMPS; |
| 1386 | |
| 1387 | osd_set_caps(&or->cdb, cap); |
| 1388 | |
| 1389 | has_in = or->in.bio || or->get_attr.total_bytes; |
| 1390 | has_out = or->out.bio || or->set_attr.total_bytes || |
| 1391 | or->enc_get_attr.total_bytes; |
| 1392 | |
| 1393 | ret = _init_blk_request(or, has_in, has_out); |
| 1394 | if (ret) { |
| 1395 | OSD_DEBUG("_init_blk_request failed\n"); |
| 1396 | return ret; |
| 1397 | } |
| 1398 | |
| 1399 | if (or->out.bio) { |
| 1400 | ret = blk_rq_append_bio(or->request->q, or->out.req, |
| 1401 | or->out.bio); |
| 1402 | if (ret) { |
| 1403 | OSD_DEBUG("blk_rq_append_bio out failed\n"); |
| 1404 | return ret; |
| 1405 | } |
| 1406 | OSD_DEBUG("out bytes=%llu (bytes_req=%u)\n", |
| 1407 | _LLU(or->out.total_bytes), or->out.req->data_len); |
| 1408 | } |
| 1409 | if (or->in.bio) { |
| 1410 | ret = blk_rq_append_bio(or->request->q, or->in.req, or->in.bio); |
| 1411 | if (ret) { |
| 1412 | OSD_DEBUG("blk_rq_append_bio in failed\n"); |
| 1413 | return ret; |
| 1414 | } |
| 1415 | OSD_DEBUG("in bytes=%llu (bytes_req=%u)\n", |
| 1416 | _LLU(or->in.total_bytes), or->in.req->data_len); |
| 1417 | } |
| 1418 | |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 1419 | or->out.pad_buff = sg_out_pad_buffer; |
| 1420 | or->in.pad_buff = sg_in_pad_buffer; |
| 1421 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 1422 | if (!or->attributes_mode) |
| 1423 | or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS; |
| 1424 | cdbh->command_specific_options |= or->attributes_mode; |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 1425 | if (or->attributes_mode == OSD_CDB_GET_ATTR_PAGE_SET_ONE) { |
| 1426 | ret = _osd_req_finalize_attr_page(or); |
| 1427 | } else { |
| 1428 | /* TODO: I think that for the GET_ATTR command these 2 should |
| 1429 | * be reversed to keep them in execution order (for embeded |
| 1430 | * targets with low memory footprint) |
| 1431 | */ |
| 1432 | ret = _osd_req_finalize_set_attr_list(or); |
| 1433 | if (ret) { |
| 1434 | OSD_DEBUG("_osd_req_finalize_set_attr_list failed\n"); |
| 1435 | return ret; |
| 1436 | } |
| 1437 | |
| 1438 | ret = _osd_req_finalize_get_attr_list(or); |
| 1439 | if (ret) { |
| 1440 | OSD_DEBUG("_osd_req_finalize_get_attr_list failed\n"); |
| 1441 | return ret; |
| 1442 | } |
| 1443 | } |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 1444 | |
Boaz Harrosh | 546881a | 2009-05-24 20:04:00 +0300 | [diff] [blame] | 1445 | ret = _osd_req_finalize_data_integrity(or, has_in, has_out, |
| 1446 | out_data_bytes, cap_key); |
Boaz Harrosh | 345c435 | 2009-01-25 17:03:07 +0200 | [diff] [blame] | 1447 | if (ret) |
| 1448 | return ret; |
| 1449 | |
| 1450 | osd_sec_sign_cdb(&or->cdb, cap_key); |
| 1451 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 1452 | or->request->cmd = or->cdb.buff; |
| 1453 | or->request->cmd_len = _osd_req_cdb_len(or); |
| 1454 | |
| 1455 | return 0; |
| 1456 | } |
| 1457 | EXPORT_SYMBOL(osd_finalize_request); |
| 1458 | |
Boaz Harrosh | 98f3aea | 2009-01-25 17:15:16 +0200 | [diff] [blame] | 1459 | #define OSD_SENSE_PRINT1(fmt, a...) \ |
| 1460 | do { \ |
| 1461 | if (__cur_sense_need_output) \ |
| 1462 | OSD_ERR(fmt, ##a); \ |
| 1463 | } while (0) |
| 1464 | |
| 1465 | #define OSD_SENSE_PRINT2(fmt, a...) OSD_SENSE_PRINT1(" " fmt, ##a) |
| 1466 | |
| 1467 | int osd_req_decode_sense_full(struct osd_request *or, |
| 1468 | struct osd_sense_info *osi, bool silent, |
| 1469 | struct osd_obj_id *bad_obj_list __unused, int max_obj __unused, |
| 1470 | struct osd_attr *bad_attr_list, int max_attr) |
| 1471 | { |
| 1472 | int sense_len, original_sense_len; |
| 1473 | struct osd_sense_info local_osi; |
| 1474 | struct scsi_sense_descriptor_based *ssdb; |
| 1475 | void *cur_descriptor; |
| 1476 | #if (CONFIG_SCSI_OSD_DPRINT_SENSE == 0) |
| 1477 | const bool __cur_sense_need_output = false; |
| 1478 | #else |
| 1479 | bool __cur_sense_need_output = !silent; |
| 1480 | #endif |
| 1481 | |
| 1482 | if (!or->request->errors) |
| 1483 | return 0; |
| 1484 | |
| 1485 | ssdb = or->request->sense; |
| 1486 | sense_len = or->request->sense_len; |
| 1487 | if ((sense_len < (int)sizeof(*ssdb) || !ssdb->sense_key)) { |
| 1488 | OSD_ERR("Block-layer returned error(0x%x) but " |
| 1489 | "sense_len(%u) || key(%d) is empty\n", |
| 1490 | or->request->errors, sense_len, ssdb->sense_key); |
| 1491 | return -EIO; |
| 1492 | } |
| 1493 | |
| 1494 | if ((ssdb->response_code != 0x72) && (ssdb->response_code != 0x73)) { |
| 1495 | OSD_ERR("Unrecognized scsi sense: rcode=%x length=%d\n", |
| 1496 | ssdb->response_code, sense_len); |
| 1497 | return -EIO; |
| 1498 | } |
| 1499 | |
| 1500 | osi = osi ? : &local_osi; |
| 1501 | memset(osi, 0, sizeof(*osi)); |
| 1502 | osi->key = ssdb->sense_key; |
| 1503 | osi->additional_code = be16_to_cpu(ssdb->additional_sense_code); |
| 1504 | original_sense_len = ssdb->additional_sense_length + 8; |
| 1505 | |
| 1506 | #if (CONFIG_SCSI_OSD_DPRINT_SENSE == 1) |
| 1507 | if (__cur_sense_need_output) |
| 1508 | __cur_sense_need_output = (osi->key > scsi_sk_recovered_error); |
| 1509 | #endif |
| 1510 | OSD_SENSE_PRINT1("Main Sense information key=0x%x length(%d, %d) " |
| 1511 | "additional_code=0x%x\n", |
| 1512 | osi->key, original_sense_len, sense_len, |
| 1513 | osi->additional_code); |
| 1514 | |
| 1515 | if (original_sense_len < sense_len) |
| 1516 | sense_len = original_sense_len; |
| 1517 | |
| 1518 | cur_descriptor = ssdb->ssd; |
| 1519 | sense_len -= sizeof(*ssdb); |
| 1520 | while (sense_len > 0) { |
| 1521 | struct scsi_sense_descriptor *ssd = cur_descriptor; |
| 1522 | int cur_len = ssd->additional_length + 2; |
| 1523 | |
| 1524 | sense_len -= cur_len; |
| 1525 | |
| 1526 | if (sense_len < 0) |
| 1527 | break; /* sense was truncated */ |
| 1528 | |
| 1529 | switch (ssd->descriptor_type) { |
| 1530 | case scsi_sense_information: |
| 1531 | case scsi_sense_command_specific_information: |
| 1532 | { |
| 1533 | struct scsi_sense_command_specific_data_descriptor |
| 1534 | *sscd = cur_descriptor; |
| 1535 | |
| 1536 | osi->command_info = |
| 1537 | get_unaligned_be64(&sscd->information) ; |
| 1538 | OSD_SENSE_PRINT2( |
| 1539 | "command_specific_information 0x%llx \n", |
| 1540 | _LLU(osi->command_info)); |
| 1541 | break; |
| 1542 | } |
| 1543 | case scsi_sense_key_specific: |
| 1544 | { |
| 1545 | struct scsi_sense_key_specific_data_descriptor |
| 1546 | *ssks = cur_descriptor; |
| 1547 | |
| 1548 | osi->sense_info = get_unaligned_be16(&ssks->value); |
| 1549 | OSD_SENSE_PRINT2( |
| 1550 | "sense_key_specific_information %u" |
| 1551 | "sksv_cd_bpv_bp (0x%x)\n", |
| 1552 | osi->sense_info, ssks->sksv_cd_bpv_bp); |
| 1553 | break; |
| 1554 | } |
| 1555 | case osd_sense_object_identification: |
| 1556 | { /*FIXME: Keep first not last, Store in array*/ |
| 1557 | struct osd_sense_identification_data_descriptor |
| 1558 | *osidd = cur_descriptor; |
| 1559 | |
| 1560 | osi->not_initiated_command_functions = |
| 1561 | le32_to_cpu(osidd->not_initiated_functions); |
| 1562 | osi->completed_command_functions = |
| 1563 | le32_to_cpu(osidd->completed_functions); |
| 1564 | osi->obj.partition = be64_to_cpu(osidd->partition_id); |
| 1565 | osi->obj.id = be64_to_cpu(osidd->object_id); |
| 1566 | OSD_SENSE_PRINT2( |
| 1567 | "object_identification pid=0x%llx oid=0x%llx\n", |
| 1568 | _LLU(osi->obj.partition), _LLU(osi->obj.id)); |
| 1569 | OSD_SENSE_PRINT2( |
| 1570 | "not_initiated_bits(%x) " |
| 1571 | "completed_command_bits(%x)\n", |
| 1572 | osi->not_initiated_command_functions, |
| 1573 | osi->completed_command_functions); |
| 1574 | break; |
| 1575 | } |
| 1576 | case osd_sense_response_integrity_check: |
| 1577 | { |
| 1578 | struct osd_sense_response_integrity_check_descriptor |
| 1579 | *osricd = cur_descriptor; |
| 1580 | const unsigned len = |
| 1581 | sizeof(osricd->integrity_check_value); |
| 1582 | char key_dump[len*4 + 2]; /* 2nibbles+space+ASCII */ |
| 1583 | |
| 1584 | hex_dump_to_buffer(osricd->integrity_check_value, len, |
| 1585 | 32, 1, key_dump, sizeof(key_dump), true); |
| 1586 | OSD_SENSE_PRINT2("response_integrity [%s]\n", key_dump); |
| 1587 | } |
| 1588 | case osd_sense_attribute_identification: |
| 1589 | { |
| 1590 | struct osd_sense_attributes_data_descriptor |
| 1591 | *osadd = cur_descriptor; |
| 1592 | int len = min(cur_len, sense_len); |
| 1593 | int i = 0; |
| 1594 | struct osd_sense_attr *pattr = osadd->sense_attrs; |
| 1595 | |
| 1596 | while (len < 0) { |
| 1597 | u32 attr_page = be32_to_cpu(pattr->attr_page); |
| 1598 | u32 attr_id = be32_to_cpu(pattr->attr_id); |
| 1599 | |
| 1600 | if (i++ == 0) { |
| 1601 | osi->attr.attr_page = attr_page; |
| 1602 | osi->attr.attr_id = attr_id; |
| 1603 | } |
| 1604 | |
| 1605 | if (bad_attr_list && max_attr) { |
| 1606 | bad_attr_list->attr_page = attr_page; |
| 1607 | bad_attr_list->attr_id = attr_id; |
| 1608 | bad_attr_list++; |
| 1609 | max_attr--; |
| 1610 | } |
| 1611 | OSD_SENSE_PRINT2( |
| 1612 | "osd_sense_attribute_identification" |
| 1613 | "attr_page=0x%x attr_id=0x%x\n", |
| 1614 | attr_page, attr_id); |
| 1615 | } |
| 1616 | } |
| 1617 | /*These are not legal for OSD*/ |
| 1618 | case scsi_sense_field_replaceable_unit: |
| 1619 | OSD_SENSE_PRINT2("scsi_sense_field_replaceable_unit\n"); |
| 1620 | break; |
| 1621 | case scsi_sense_stream_commands: |
| 1622 | OSD_SENSE_PRINT2("scsi_sense_stream_commands\n"); |
| 1623 | break; |
| 1624 | case scsi_sense_block_commands: |
| 1625 | OSD_SENSE_PRINT2("scsi_sense_block_commands\n"); |
| 1626 | break; |
| 1627 | case scsi_sense_ata_return: |
| 1628 | OSD_SENSE_PRINT2("scsi_sense_ata_return\n"); |
| 1629 | break; |
| 1630 | default: |
| 1631 | if (ssd->descriptor_type <= scsi_sense_Reserved_last) |
| 1632 | OSD_SENSE_PRINT2( |
| 1633 | "scsi_sense Reserved descriptor (0x%x)", |
| 1634 | ssd->descriptor_type); |
| 1635 | else |
| 1636 | OSD_SENSE_PRINT2( |
| 1637 | "scsi_sense Vendor descriptor (0x%x)", |
| 1638 | ssd->descriptor_type); |
| 1639 | } |
| 1640 | |
| 1641 | cur_descriptor += cur_len; |
| 1642 | } |
| 1643 | |
| 1644 | return (osi->key > scsi_sk_recovered_error) ? -EIO : 0; |
| 1645 | } |
| 1646 | EXPORT_SYMBOL(osd_req_decode_sense_full); |
| 1647 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 1648 | /* |
| 1649 | * Implementation of osd_sec.h API |
| 1650 | * TODO: Move to a separate osd_sec.c file at a later stage. |
| 1651 | */ |
| 1652 | |
| 1653 | enum { OSD_SEC_CAP_V1_ALL_CAPS = |
| 1654 | OSD_SEC_CAP_APPEND | OSD_SEC_CAP_OBJ_MGMT | OSD_SEC_CAP_REMOVE | |
| 1655 | OSD_SEC_CAP_CREATE | OSD_SEC_CAP_SET_ATTR | OSD_SEC_CAP_GET_ATTR | |
| 1656 | OSD_SEC_CAP_WRITE | OSD_SEC_CAP_READ | OSD_SEC_CAP_POL_SEC | |
| 1657 | OSD_SEC_CAP_GLOBAL | OSD_SEC_CAP_DEV_MGMT |
| 1658 | }; |
| 1659 | |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 1660 | enum { OSD_SEC_CAP_V2_ALL_CAPS = |
| 1661 | OSD_SEC_CAP_V1_ALL_CAPS | OSD_SEC_CAP_QUERY | OSD_SEC_CAP_M_OBJECT |
| 1662 | }; |
| 1663 | |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 1664 | void osd_sec_init_nosec_doall_caps(void *caps, |
| 1665 | const struct osd_obj_id *obj, bool is_collection, const bool is_v1) |
| 1666 | { |
| 1667 | struct osd_capability *cap = caps; |
| 1668 | u8 type; |
| 1669 | u8 descriptor_type; |
| 1670 | |
| 1671 | if (likely(obj->id)) { |
| 1672 | if (unlikely(is_collection)) { |
| 1673 | type = OSD_SEC_OBJ_COLLECTION; |
| 1674 | descriptor_type = is_v1 ? OSD_SEC_OBJ_DESC_OBJ : |
| 1675 | OSD_SEC_OBJ_DESC_COL; |
| 1676 | } else { |
| 1677 | type = OSD_SEC_OBJ_USER; |
| 1678 | descriptor_type = OSD_SEC_OBJ_DESC_OBJ; |
| 1679 | } |
| 1680 | WARN_ON(!obj->partition); |
| 1681 | } else { |
| 1682 | type = obj->partition ? OSD_SEC_OBJ_PARTITION : |
| 1683 | OSD_SEC_OBJ_ROOT; |
| 1684 | descriptor_type = OSD_SEC_OBJ_DESC_PAR; |
| 1685 | } |
| 1686 | |
| 1687 | memset(cap, 0, sizeof(*cap)); |
| 1688 | |
| 1689 | cap->h.format = OSD_SEC_CAP_FORMAT_VER1; |
| 1690 | cap->h.integrity_algorithm__key_version = 0; /* MAKE_BYTE(0, 0); */ |
| 1691 | cap->h.security_method = OSD_SEC_NOSEC; |
| 1692 | /* cap->expiration_time; |
| 1693 | cap->AUDIT[30-10]; |
| 1694 | cap->discriminator[42-30]; |
| 1695 | cap->object_created_time; */ |
| 1696 | cap->h.object_type = type; |
| 1697 | osd_sec_set_caps(&cap->h, OSD_SEC_CAP_V1_ALL_CAPS); |
| 1698 | cap->h.object_descriptor_type = descriptor_type; |
| 1699 | cap->od.obj_desc.policy_access_tag = 0; |
| 1700 | cap->od.obj_desc.allowed_partition_id = cpu_to_be64(obj->partition); |
| 1701 | cap->od.obj_desc.allowed_object_id = cpu_to_be64(obj->id); |
| 1702 | } |
| 1703 | EXPORT_SYMBOL(osd_sec_init_nosec_doall_caps); |
| 1704 | |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 1705 | /* FIXME: Extract version from caps pointer. |
| 1706 | * Also Pete's target only supports caps from OSDv1 for now |
| 1707 | */ |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 1708 | void osd_set_caps(struct osd_cdb *cdb, const void *caps) |
| 1709 | { |
Boaz Harrosh | c6572c9 | 2009-01-25 17:09:40 +0200 | [diff] [blame] | 1710 | bool is_ver1 = true; |
| 1711 | /* NOTE: They start at same address */ |
| 1712 | memcpy(&cdb->v1.caps, caps, is_ver1 ? OSDv1_CAP_LEN : OSD_CAP_LEN); |
Boaz Harrosh | 02941a5 | 2009-01-25 16:55:30 +0200 | [diff] [blame] | 1713 | } |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 1714 | |
Boaz Harrosh | 345c435 | 2009-01-25 17:03:07 +0200 | [diff] [blame] | 1715 | bool osd_is_sec_alldata(struct osd_security_parameters *sec_parms __unused) |
| 1716 | { |
| 1717 | return false; |
| 1718 | } |
| 1719 | |
| 1720 | void osd_sec_sign_cdb(struct osd_cdb *ocdb __unused, const u8 *cap_key __unused) |
| 1721 | { |
| 1722 | } |
| 1723 | |
| 1724 | void osd_sec_sign_data(void *data_integ __unused, |
| 1725 | struct bio *bio __unused, const u8 *cap_key __unused) |
| 1726 | { |
| 1727 | } |
| 1728 | |
Boaz Harrosh | 4ef1a3d | 2009-01-25 16:59:50 +0200 | [diff] [blame] | 1729 | /* |
| 1730 | * Declared in osd_protocol.h |
| 1731 | * 4.12.5 Data-In and Data-Out buffer offsets |
| 1732 | * byte offset = mantissa * (2^(exponent+8)) |
| 1733 | * Returns the smallest allowed encoded offset that contains given @offset |
| 1734 | * The actual encoded offset returned is @offset + *@padding. |
| 1735 | */ |
| 1736 | osd_cdb_offset __osd_encode_offset( |
| 1737 | u64 offset, unsigned *padding, int min_shift, int max_shift) |
| 1738 | { |
| 1739 | u64 try_offset = -1, mod, align; |
| 1740 | osd_cdb_offset be32_offset; |
| 1741 | int shift; |
| 1742 | |
| 1743 | *padding = 0; |
| 1744 | if (!offset) |
| 1745 | return 0; |
| 1746 | |
| 1747 | for (shift = min_shift; shift < max_shift; ++shift) { |
| 1748 | try_offset = offset >> shift; |
| 1749 | if (try_offset < (1 << OSD_OFFSET_MAX_BITS)) |
| 1750 | break; |
| 1751 | } |
| 1752 | |
| 1753 | BUG_ON(shift == max_shift); |
| 1754 | |
| 1755 | align = 1 << shift; |
| 1756 | mod = offset & (align - 1); |
| 1757 | if (mod) { |
| 1758 | *padding = align - mod; |
| 1759 | try_offset += 1; |
| 1760 | } |
| 1761 | |
| 1762 | try_offset |= ((shift - 8) & 0xf) << 28; |
| 1763 | be32_offset = cpu_to_be32((u32)try_offset); |
| 1764 | |
| 1765 | OSD_DEBUG("offset=%llu mantissa=%llu exp=%d encoded=%x pad=%d\n", |
| 1766 | _LLU(offset), _LLU(try_offset & 0x0FFFFFFF), shift, |
| 1767 | be32_offset, *padding); |
| 1768 | return be32_offset; |
| 1769 | } |