Commit | Line | Data |
---|---|---|
c66ac9db NB |
1 | /******************************************************************************* |
2 | * Filename: target_core_device.c (based on iscsi_target_device.c) | |
3 | * | |
e3d6f909 | 4 | * This file contains the TCM Virtual Device and Disk Transport |
c66ac9db NB |
5 | * agnostic related functions. |
6 | * | |
4c76251e | 7 | * (c) Copyright 2003-2013 Datera, Inc. |
c66ac9db NB |
8 | * |
9 | * Nicholas A. Bellinger <nab@kernel.org> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
24 | * | |
25 | ******************************************************************************/ | |
26 | ||
27 | #include <linux/net.h> | |
28 | #include <linux/string.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/timer.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/spinlock.h> | |
c66ac9db NB |
33 | #include <linux/kthread.h> |
34 | #include <linux/in.h> | |
c53181af | 35 | #include <linux/export.h> |
c66ac9db NB |
36 | #include <net/sock.h> |
37 | #include <net/tcp.h> | |
38 | #include <scsi/scsi.h> | |
1078da16 | 39 | #include <scsi/scsi_device.h> |
c66ac9db NB |
40 | |
41 | #include <target/target_core_base.h> | |
c4795fb2 CH |
42 | #include <target/target_core_backend.h> |
43 | #include <target/target_core_fabric.h> | |
c66ac9db | 44 | |
e26d99ae | 45 | #include "target_core_internal.h" |
c66ac9db | 46 | #include "target_core_alua.h" |
c66ac9db NB |
47 | #include "target_core_pr.h" |
48 | #include "target_core_ua.h" | |
49 | ||
d9ea32bf NB |
50 | DEFINE_MUTEX(g_device_mutex); |
51 | LIST_HEAD(g_device_list); | |
52 | ||
e3d6f909 | 53 | static struct se_hba *lun0_hba; |
e3d6f909 AG |
54 | /* not static, needed by tpg.c */ |
55 | struct se_device *g_lun0_dev; | |
56 | ||
de103c93 CH |
57 | sense_reason_t |
58 | transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) | |
c66ac9db | 59 | { |
c66ac9db | 60 | struct se_lun *se_lun = NULL; |
e3d6f909 | 61 | struct se_session *se_sess = se_cmd->se_sess; |
5951146d | 62 | struct se_device *dev; |
c66ac9db | 63 | unsigned long flags; |
c66ac9db | 64 | |
de103c93 CH |
65 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
66 | return TCM_NON_EXISTENT_LUN; | |
d8144955 | 67 | |
78faae37 | 68 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
f2083241 | 69 | se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun]; |
5951146d AG |
70 | if (se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
71 | struct se_dev_entry *deve = se_cmd->se_deve; | |
72 | ||
73 | deve->total_cmds++; | |
5951146d AG |
74 | |
75 | if ((se_cmd->data_direction == DMA_TO_DEVICE) && | |
76 | (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { | |
6708bb27 | 77 | pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" |
5951146d AG |
78 | " Access for 0x%08x\n", |
79 | se_cmd->se_tfo->get_fabric_name(), | |
80 | unpacked_lun); | |
78faae37 | 81 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
de103c93 | 82 | return TCM_WRITE_PROTECTED; |
c66ac9db | 83 | } |
5951146d AG |
84 | |
85 | if (se_cmd->data_direction == DMA_TO_DEVICE) | |
86 | deve->write_bytes += se_cmd->data_length; | |
87 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) | |
88 | deve->read_bytes += se_cmd->data_length; | |
89 | ||
5951146d AG |
90 | se_lun = deve->se_lun; |
91 | se_cmd->se_lun = deve->se_lun; | |
c66ac9db NB |
92 | se_cmd->pr_res_key = deve->pr_res_key; |
93 | se_cmd->orig_fe_lun = unpacked_lun; | |
c66ac9db | 94 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
5277797d NB |
95 | |
96 | percpu_ref_get(&se_lun->lun_ref); | |
97 | se_cmd->lun_ref_active = true; | |
c66ac9db | 98 | } |
78faae37 | 99 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
c66ac9db NB |
100 | |
101 | if (!se_lun) { | |
5951146d AG |
102 | /* |
103 | * Use the se_portal_group->tpg_virt_lun0 to allow for | |
104 | * REPORT_LUNS, et al to be returned when no active | |
105 | * MappedLUN=0 exists for this Initiator Port. | |
106 | */ | |
107 | if (unpacked_lun != 0) { | |
6708bb27 | 108 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
c66ac9db | 109 | " Access for 0x%08x\n", |
e3d6f909 | 110 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 111 | unpacked_lun); |
de103c93 | 112 | return TCM_NON_EXISTENT_LUN; |
5951146d AG |
113 | } |
114 | /* | |
115 | * Force WRITE PROTECT for virtual LUN 0 | |
116 | */ | |
117 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && | |
de103c93 CH |
118 | (se_cmd->data_direction != DMA_NONE)) |
119 | return TCM_WRITE_PROTECTED; | |
5951146d AG |
120 | |
121 | se_lun = &se_sess->se_tpg->tpg_virt_lun0; | |
122 | se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; | |
123 | se_cmd->orig_fe_lun = 0; | |
5951146d | 124 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
5277797d NB |
125 | |
126 | percpu_ref_get(&se_lun->lun_ref); | |
127 | se_cmd->lun_ref_active = true; | |
c66ac9db | 128 | } |
c66ac9db | 129 | |
5951146d AG |
130 | /* Directly associate cmd with se_dev */ |
131 | se_cmd->se_dev = se_lun->lun_se_dev; | |
132 | ||
5951146d | 133 | dev = se_lun->lun_se_dev; |
ee480683 | 134 | atomic_long_inc(&dev->num_cmds); |
c66ac9db | 135 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
ee480683 | 136 | atomic_long_add(se_cmd->data_length, &dev->write_bytes); |
c66ac9db | 137 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
ee480683 | 138 | atomic_long_add(se_cmd->data_length, &dev->read_bytes); |
c66ac9db | 139 | |
c66ac9db NB |
140 | return 0; |
141 | } | |
5951146d | 142 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
c66ac9db | 143 | |
5951146d | 144 | int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun) |
c66ac9db | 145 | { |
c66ac9db NB |
146 | struct se_dev_entry *deve; |
147 | struct se_lun *se_lun = NULL; | |
e3d6f909 | 148 | struct se_session *se_sess = se_cmd->se_sess; |
c66ac9db | 149 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
5e1be919 | 150 | unsigned long flags; |
c66ac9db | 151 | |
de103c93 | 152 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
e3d6f909 | 153 | return -ENODEV; |
d8144955 | 154 | |
5e1be919 | 155 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
f2083241 | 156 | se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun]; |
5951146d AG |
157 | deve = se_cmd->se_deve; |
158 | ||
c66ac9db | 159 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
5951146d AG |
160 | se_tmr->tmr_lun = deve->se_lun; |
161 | se_cmd->se_lun = deve->se_lun; | |
162 | se_lun = deve->se_lun; | |
c66ac9db NB |
163 | se_cmd->pr_res_key = deve->pr_res_key; |
164 | se_cmd->orig_fe_lun = unpacked_lun; | |
c66ac9db | 165 | } |
5e1be919 | 166 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
c66ac9db NB |
167 | |
168 | if (!se_lun) { | |
6708bb27 | 169 | pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
c66ac9db | 170 | " Access for 0x%08x\n", |
e3d6f909 | 171 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 172 | unpacked_lun); |
e3d6f909 | 173 | return -ENODEV; |
c66ac9db | 174 | } |
c66ac9db | 175 | |
5951146d AG |
176 | /* Directly associate cmd with se_dev */ |
177 | se_cmd->se_dev = se_lun->lun_se_dev; | |
178 | se_tmr->tmr_dev = se_lun->lun_se_dev; | |
179 | ||
5e1be919 | 180 | spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); |
5951146d | 181 | list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list); |
5e1be919 | 182 | spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); |
c66ac9db NB |
183 | |
184 | return 0; | |
185 | } | |
5951146d | 186 | EXPORT_SYMBOL(transport_lookup_tmr_lun); |
c66ac9db NB |
187 | |
188 | /* | |
189 | * This function is called from core_scsi3_emulate_pro_register_and_move() | |
190 | * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count | |
191 | * when a matching rtpi is found. | |
192 | */ | |
193 | struct se_dev_entry *core_get_se_deve_from_rtpi( | |
194 | struct se_node_acl *nacl, | |
195 | u16 rtpi) | |
196 | { | |
197 | struct se_dev_entry *deve; | |
198 | struct se_lun *lun; | |
199 | struct se_port *port; | |
200 | struct se_portal_group *tpg = nacl->se_tpg; | |
201 | u32 i; | |
202 | ||
203 | spin_lock_irq(&nacl->device_list_lock); | |
204 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
f2083241 | 205 | deve = nacl->device_list[i]; |
c66ac9db NB |
206 | |
207 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) | |
208 | continue; | |
209 | ||
210 | lun = deve->se_lun; | |
6708bb27 AG |
211 | if (!lun) { |
212 | pr_err("%s device entries device pointer is" | |
c66ac9db | 213 | " NULL, but Initiator has access.\n", |
e3d6f909 | 214 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
215 | continue; |
216 | } | |
217 | port = lun->lun_sep; | |
6708bb27 AG |
218 | if (!port) { |
219 | pr_err("%s device entries device pointer is" | |
c66ac9db | 220 | " NULL, but Initiator has access.\n", |
e3d6f909 | 221 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
222 | continue; |
223 | } | |
224 | if (port->sep_rtpi != rtpi) | |
225 | continue; | |
226 | ||
33940d09 | 227 | atomic_inc_mb(&deve->pr_ref_count); |
c66ac9db NB |
228 | spin_unlock_irq(&nacl->device_list_lock); |
229 | ||
230 | return deve; | |
231 | } | |
232 | spin_unlock_irq(&nacl->device_list_lock); | |
233 | ||
234 | return NULL; | |
235 | } | |
236 | ||
237 | int core_free_device_list_for_node( | |
238 | struct se_node_acl *nacl, | |
239 | struct se_portal_group *tpg) | |
240 | { | |
241 | struct se_dev_entry *deve; | |
242 | struct se_lun *lun; | |
243 | u32 i; | |
244 | ||
245 | if (!nacl->device_list) | |
246 | return 0; | |
247 | ||
248 | spin_lock_irq(&nacl->device_list_lock); | |
249 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
f2083241 | 250 | deve = nacl->device_list[i]; |
c66ac9db NB |
251 | |
252 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) | |
253 | continue; | |
254 | ||
255 | if (!deve->se_lun) { | |
6708bb27 | 256 | pr_err("%s device entries device pointer is" |
c66ac9db | 257 | " NULL, but Initiator has access.\n", |
e3d6f909 | 258 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
259 | continue; |
260 | } | |
261 | lun = deve->se_lun; | |
262 | ||
263 | spin_unlock_irq(&nacl->device_list_lock); | |
e80ac6c4 AG |
264 | core_disable_device_list_for_node(lun, NULL, deve->mapped_lun, |
265 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); | |
c66ac9db NB |
266 | spin_lock_irq(&nacl->device_list_lock); |
267 | } | |
268 | spin_unlock_irq(&nacl->device_list_lock); | |
269 | ||
f2083241 | 270 | array_free(nacl->device_list, TRANSPORT_MAX_LUNS_PER_TPG); |
c66ac9db NB |
271 | nacl->device_list = NULL; |
272 | ||
273 | return 0; | |
274 | } | |
275 | ||
c66ac9db NB |
276 | void core_update_device_list_access( |
277 | u32 mapped_lun, | |
278 | u32 lun_access, | |
279 | struct se_node_acl *nacl) | |
280 | { | |
281 | struct se_dev_entry *deve; | |
282 | ||
283 | spin_lock_irq(&nacl->device_list_lock); | |
f2083241 | 284 | deve = nacl->device_list[mapped_lun]; |
c66ac9db NB |
285 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
286 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
287 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
288 | } else { | |
289 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
290 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
291 | } | |
292 | spin_unlock_irq(&nacl->device_list_lock); | |
c66ac9db NB |
293 | } |
294 | ||
e80ac6c4 | 295 | /* core_enable_device_list_for_node(): |
c66ac9db NB |
296 | * |
297 | * | |
298 | */ | |
e80ac6c4 | 299 | int core_enable_device_list_for_node( |
c66ac9db NB |
300 | struct se_lun *lun, |
301 | struct se_lun_acl *lun_acl, | |
302 | u32 mapped_lun, | |
303 | u32 lun_access, | |
304 | struct se_node_acl *nacl, | |
e80ac6c4 | 305 | struct se_portal_group *tpg) |
c66ac9db NB |
306 | { |
307 | struct se_port *port = lun->lun_sep; | |
e80ac6c4 | 308 | struct se_dev_entry *deve; |
c66ac9db NB |
309 | |
310 | spin_lock_irq(&nacl->device_list_lock); | |
e80ac6c4 AG |
311 | |
312 | deve = nacl->device_list[mapped_lun]; | |
313 | ||
314 | /* | |
125d0119 | 315 | * Check if the call is handling demo mode -> explicit LUN ACL |
e80ac6c4 AG |
316 | * transition. This transition must be for the same struct se_lun |
317 | * + mapped_lun that was setup in demo mode.. | |
318 | */ | |
319 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { | |
320 | if (deve->se_lun_acl != NULL) { | |
321 | pr_err("struct se_dev_entry->se_lun_acl" | |
125d0119 | 322 | " already set for demo mode -> explicit" |
e80ac6c4 AG |
323 | " LUN ACL transition\n"); |
324 | spin_unlock_irq(&nacl->device_list_lock); | |
325 | return -EINVAL; | |
326 | } | |
327 | if (deve->se_lun != lun) { | |
328 | pr_err("struct se_dev_entry->se_lun does" | |
329 | " match passed struct se_lun for demo mode" | |
125d0119 | 330 | " -> explicit LUN ACL transition\n"); |
e80ac6c4 AG |
331 | spin_unlock_irq(&nacl->device_list_lock); |
332 | return -EINVAL; | |
c66ac9db | 333 | } |
e80ac6c4 | 334 | deve->se_lun_acl = lun_acl; |
c66ac9db NB |
335 | |
336 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { | |
337 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
338 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
339 | } else { | |
340 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
341 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
342 | } | |
343 | ||
c66ac9db | 344 | spin_unlock_irq(&nacl->device_list_lock); |
e80ac6c4 AG |
345 | return 0; |
346 | } | |
c66ac9db | 347 | |
e80ac6c4 AG |
348 | deve->se_lun = lun; |
349 | deve->se_lun_acl = lun_acl; | |
350 | deve->mapped_lun = mapped_lun; | |
351 | deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; | |
c66ac9db | 352 | |
e80ac6c4 AG |
353 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
354 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
355 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
356 | } else { | |
357 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
358 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
c66ac9db | 359 | } |
e80ac6c4 AG |
360 | |
361 | deve->creation_time = get_jiffies_64(); | |
362 | deve->attach_count++; | |
363 | spin_unlock_irq(&nacl->device_list_lock); | |
364 | ||
365 | spin_lock_bh(&port->sep_alua_lock); | |
366 | list_add_tail(&deve->alua_port_list, &port->sep_alua_list); | |
367 | spin_unlock_bh(&port->sep_alua_lock); | |
368 | ||
369 | return 0; | |
370 | } | |
371 | ||
372 | /* core_disable_device_list_for_node(): | |
373 | * | |
374 | * | |
375 | */ | |
376 | int core_disable_device_list_for_node( | |
377 | struct se_lun *lun, | |
378 | struct se_lun_acl *lun_acl, | |
379 | u32 mapped_lun, | |
380 | u32 lun_access, | |
381 | struct se_node_acl *nacl, | |
382 | struct se_portal_group *tpg) | |
383 | { | |
384 | struct se_port *port = lun->lun_sep; | |
77d4c745 | 385 | struct se_dev_entry *deve = nacl->device_list[mapped_lun]; |
e80ac6c4 AG |
386 | |
387 | /* | |
388 | * If the MappedLUN entry is being disabled, the entry in | |
389 | * port->sep_alua_list must be removed now before clearing the | |
390 | * struct se_dev_entry pointers below as logic in | |
391 | * core_alua_do_transition_tg_pt() depends on these being present. | |
392 | * | |
393 | * deve->se_lun_acl will be NULL for demo-mode created LUNs | |
394 | * that have not been explicitly converted to MappedLUNs -> | |
395 | * struct se_lun_acl, but we remove deve->alua_port_list from | |
396 | * port->sep_alua_list. This also means that active UAs and | |
397 | * NodeACL context specific PR metadata for demo-mode | |
398 | * MappedLUN *deve will be released below.. | |
399 | */ | |
400 | spin_lock_bh(&port->sep_alua_lock); | |
401 | list_del(&deve->alua_port_list); | |
402 | spin_unlock_bh(&port->sep_alua_lock); | |
c66ac9db NB |
403 | /* |
404 | * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE | |
405 | * PR operation to complete. | |
406 | */ | |
c66ac9db NB |
407 | while (atomic_read(&deve->pr_ref_count) != 0) |
408 | cpu_relax(); | |
77d4c745 | 409 | |
c66ac9db NB |
410 | spin_lock_irq(&nacl->device_list_lock); |
411 | /* | |
412 | * Disable struct se_dev_entry LUN ACL mapping | |
413 | */ | |
414 | core_scsi3_ua_release_all(deve); | |
415 | deve->se_lun = NULL; | |
416 | deve->se_lun_acl = NULL; | |
417 | deve->lun_flags = 0; | |
418 | deve->creation_time = 0; | |
419 | deve->attach_count--; | |
420 | spin_unlock_irq(&nacl->device_list_lock); | |
421 | ||
422 | core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl); | |
423 | return 0; | |
424 | } | |
425 | ||
426 | /* core_clear_lun_from_tpg(): | |
427 | * | |
428 | * | |
429 | */ | |
430 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) | |
431 | { | |
432 | struct se_node_acl *nacl; | |
433 | struct se_dev_entry *deve; | |
434 | u32 i; | |
435 | ||
28638887 | 436 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 437 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
28638887 | 438 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
439 | |
440 | spin_lock_irq(&nacl->device_list_lock); | |
441 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
f2083241 | 442 | deve = nacl->device_list[i]; |
c66ac9db NB |
443 | if (lun != deve->se_lun) |
444 | continue; | |
445 | spin_unlock_irq(&nacl->device_list_lock); | |
446 | ||
e80ac6c4 | 447 | core_disable_device_list_for_node(lun, NULL, |
c66ac9db | 448 | deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, |
e80ac6c4 | 449 | nacl, tpg); |
c66ac9db NB |
450 | |
451 | spin_lock_irq(&nacl->device_list_lock); | |
452 | } | |
453 | spin_unlock_irq(&nacl->device_list_lock); | |
454 | ||
28638887 | 455 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 456 | } |
28638887 | 457 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
458 | } |
459 | ||
460 | static struct se_port *core_alloc_port(struct se_device *dev) | |
461 | { | |
462 | struct se_port *port, *port_tmp; | |
463 | ||
464 | port = kzalloc(sizeof(struct se_port), GFP_KERNEL); | |
6708bb27 AG |
465 | if (!port) { |
466 | pr_err("Unable to allocate struct se_port\n"); | |
e3d6f909 | 467 | return ERR_PTR(-ENOMEM); |
c66ac9db NB |
468 | } |
469 | INIT_LIST_HEAD(&port->sep_alua_list); | |
470 | INIT_LIST_HEAD(&port->sep_list); | |
471 | atomic_set(&port->sep_tg_pt_secondary_offline, 0); | |
472 | spin_lock_init(&port->sep_alua_lock); | |
473 | mutex_init(&port->sep_tg_pt_md_mutex); | |
474 | ||
475 | spin_lock(&dev->se_port_lock); | |
476 | if (dev->dev_port_count == 0x0000ffff) { | |
6708bb27 | 477 | pr_warn("Reached dev->dev_port_count ==" |
c66ac9db NB |
478 | " 0x0000ffff\n"); |
479 | spin_unlock(&dev->se_port_lock); | |
e3d6f909 | 480 | return ERR_PTR(-ENOSPC); |
c66ac9db NB |
481 | } |
482 | again: | |
483 | /* | |
35d1efe8 | 484 | * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device |
c66ac9db NB |
485 | * Here is the table from spc4r17 section 7.7.3.8. |
486 | * | |
487 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field | |
488 | * | |
489 | * Code Description | |
490 | * 0h Reserved | |
491 | * 1h Relative port 1, historically known as port A | |
492 | * 2h Relative port 2, historically known as port B | |
493 | * 3h to FFFFh Relative port 3 through 65 535 | |
494 | */ | |
495 | port->sep_rtpi = dev->dev_rpti_counter++; | |
6708bb27 | 496 | if (!port->sep_rtpi) |
c66ac9db NB |
497 | goto again; |
498 | ||
499 | list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { | |
500 | /* | |
35d1efe8 | 501 | * Make sure RELATIVE TARGET PORT IDENTIFIER is unique |
c66ac9db NB |
502 | * for 16-bit wrap.. |
503 | */ | |
504 | if (port->sep_rtpi == port_tmp->sep_rtpi) | |
505 | goto again; | |
506 | } | |
507 | spin_unlock(&dev->se_port_lock); | |
508 | ||
509 | return port; | |
510 | } | |
511 | ||
512 | static void core_export_port( | |
513 | struct se_device *dev, | |
514 | struct se_portal_group *tpg, | |
515 | struct se_port *port, | |
516 | struct se_lun *lun) | |
517 | { | |
c66ac9db NB |
518 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; |
519 | ||
520 | spin_lock(&dev->se_port_lock); | |
521 | spin_lock(&lun->lun_sep_lock); | |
522 | port->sep_tpg = tpg; | |
523 | port->sep_lun = lun; | |
524 | lun->lun_sep = port; | |
525 | spin_unlock(&lun->lun_sep_lock); | |
526 | ||
527 | list_add_tail(&port->sep_list, &dev->dev_sep_list); | |
528 | spin_unlock(&dev->se_port_lock); | |
529 | ||
c87fbd56 CH |
530 | if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV && |
531 | !(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) { | |
c66ac9db NB |
532 | tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); |
533 | if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { | |
6708bb27 | 534 | pr_err("Unable to allocate t10_alua_tg_pt" |
c66ac9db NB |
535 | "_gp_member_t\n"); |
536 | return; | |
537 | } | |
538 | spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); | |
539 | __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, | |
0fd97ccf | 540 | dev->t10_alua.default_tg_pt_gp); |
c66ac9db | 541 | spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); |
6708bb27 | 542 | pr_debug("%s/%s: Adding to default ALUA Target Port" |
c66ac9db | 543 | " Group: alua/default_tg_pt_gp\n", |
e3d6f909 | 544 | dev->transport->name, tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
545 | } |
546 | ||
547 | dev->dev_port_count++; | |
35d1efe8 | 548 | port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFIER */ |
c66ac9db NB |
549 | } |
550 | ||
551 | /* | |
552 | * Called with struct se_device->se_port_lock spinlock held. | |
553 | */ | |
554 | static void core_release_port(struct se_device *dev, struct se_port *port) | |
5dd7ed2e | 555 | __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock) |
c66ac9db NB |
556 | { |
557 | /* | |
558 | * Wait for any port reference for PR ALL_TG_PT=1 operation | |
559 | * to complete in __core_scsi3_alloc_registration() | |
560 | */ | |
561 | spin_unlock(&dev->se_port_lock); | |
562 | if (atomic_read(&port->sep_tg_pt_ref_cnt)) | |
563 | cpu_relax(); | |
564 | spin_lock(&dev->se_port_lock); | |
565 | ||
566 | core_alua_free_tg_pt_gp_mem(port); | |
567 | ||
568 | list_del(&port->sep_list); | |
569 | dev->dev_port_count--; | |
570 | kfree(port); | |
c66ac9db NB |
571 | } |
572 | ||
573 | int core_dev_export( | |
574 | struct se_device *dev, | |
575 | struct se_portal_group *tpg, | |
576 | struct se_lun *lun) | |
577 | { | |
0fd97ccf | 578 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
579 | struct se_port *port; |
580 | ||
581 | port = core_alloc_port(dev); | |
e3d6f909 AG |
582 | if (IS_ERR(port)) |
583 | return PTR_ERR(port); | |
c66ac9db NB |
584 | |
585 | lun->lun_se_dev = dev; | |
c66ac9db | 586 | |
0fd97ccf CH |
587 | spin_lock(&hba->device_lock); |
588 | dev->export_count++; | |
589 | spin_unlock(&hba->device_lock); | |
590 | ||
c66ac9db NB |
591 | core_export_port(dev, tpg, port, lun); |
592 | return 0; | |
593 | } | |
594 | ||
595 | void core_dev_unexport( | |
596 | struct se_device *dev, | |
597 | struct se_portal_group *tpg, | |
598 | struct se_lun *lun) | |
599 | { | |
0fd97ccf | 600 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
601 | struct se_port *port = lun->lun_sep; |
602 | ||
603 | spin_lock(&lun->lun_sep_lock); | |
604 | if (lun->lun_se_dev == NULL) { | |
605 | spin_unlock(&lun->lun_sep_lock); | |
606 | return; | |
607 | } | |
608 | spin_unlock(&lun->lun_sep_lock); | |
609 | ||
610 | spin_lock(&dev->se_port_lock); | |
c66ac9db NB |
611 | core_release_port(dev, port); |
612 | spin_unlock(&dev->se_port_lock); | |
613 | ||
0fd97ccf CH |
614 | spin_lock(&hba->device_lock); |
615 | dev->export_count--; | |
616 | spin_unlock(&hba->device_lock); | |
617 | ||
83ff42fc | 618 | lun->lun_sep = NULL; |
c66ac9db NB |
619 | lun->lun_se_dev = NULL; |
620 | } | |
621 | ||
0fd97ccf | 622 | static void se_release_vpd_for_dev(struct se_device *dev) |
c66ac9db NB |
623 | { |
624 | struct t10_vpd *vpd, *vpd_tmp; | |
625 | ||
0fd97ccf | 626 | spin_lock(&dev->t10_wwn.t10_vpd_lock); |
c66ac9db | 627 | list_for_each_entry_safe(vpd, vpd_tmp, |
0fd97ccf | 628 | &dev->t10_wwn.t10_vpd_list, vpd_list) { |
c66ac9db NB |
629 | list_del(&vpd->vpd_list); |
630 | kfree(vpd); | |
631 | } | |
0fd97ccf | 632 | spin_unlock(&dev->t10_wwn.t10_vpd_lock); |
c66ac9db NB |
633 | } |
634 | ||
c8045372 | 635 | static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) |
525a48a2 | 636 | { |
3e03989b RD |
637 | u32 aligned_max_sectors; |
638 | u32 alignment; | |
525a48a2 NB |
639 | /* |
640 | * Limit max_sectors to a PAGE_SIZE aligned value for modern | |
641 | * transport_allocate_data_tasks() operation. | |
642 | */ | |
3e03989b RD |
643 | alignment = max(1ul, PAGE_SIZE / block_size); |
644 | aligned_max_sectors = rounddown(max_sectors, alignment); | |
645 | ||
646 | if (max_sectors != aligned_max_sectors) | |
647 | pr_info("Rounding down aligned max_sectors from %u to %u\n", | |
648 | max_sectors, aligned_max_sectors); | |
525a48a2 | 649 | |
3e03989b | 650 | return aligned_max_sectors; |
525a48a2 NB |
651 | } |
652 | ||
9bc6548f CVB |
653 | bool se_dev_check_wce(struct se_device *dev) |
654 | { | |
655 | bool wce = false; | |
656 | ||
657 | if (dev->transport->get_write_cache) | |
658 | wce = dev->transport->get_write_cache(dev); | |
659 | else if (dev->dev_attrib.emulate_write_cache > 0) | |
660 | wce = true; | |
661 | ||
662 | return wce; | |
663 | } | |
664 | ||
c66ac9db NB |
665 | int se_dev_set_max_unmap_lba_count( |
666 | struct se_device *dev, | |
667 | u32 max_unmap_lba_count) | |
668 | { | |
0fd97ccf | 669 | dev->dev_attrib.max_unmap_lba_count = max_unmap_lba_count; |
6708bb27 | 670 | pr_debug("dev[%p]: Set max_unmap_lba_count: %u\n", |
0fd97ccf | 671 | dev, dev->dev_attrib.max_unmap_lba_count); |
c66ac9db NB |
672 | return 0; |
673 | } | |
d30cd123 | 674 | EXPORT_SYMBOL(se_dev_set_max_unmap_lba_count); |
c66ac9db NB |
675 | |
676 | int se_dev_set_max_unmap_block_desc_count( | |
677 | struct se_device *dev, | |
678 | u32 max_unmap_block_desc_count) | |
679 | { | |
0fd97ccf | 680 | dev->dev_attrib.max_unmap_block_desc_count = |
e3d6f909 | 681 | max_unmap_block_desc_count; |
6708bb27 | 682 | pr_debug("dev[%p]: Set max_unmap_block_desc_count: %u\n", |
0fd97ccf | 683 | dev, dev->dev_attrib.max_unmap_block_desc_count); |
c66ac9db NB |
684 | return 0; |
685 | } | |
d30cd123 | 686 | EXPORT_SYMBOL(se_dev_set_max_unmap_block_desc_count); |
c66ac9db NB |
687 | |
688 | int se_dev_set_unmap_granularity( | |
689 | struct se_device *dev, | |
690 | u32 unmap_granularity) | |
691 | { | |
0fd97ccf | 692 | dev->dev_attrib.unmap_granularity = unmap_granularity; |
6708bb27 | 693 | pr_debug("dev[%p]: Set unmap_granularity: %u\n", |
0fd97ccf | 694 | dev, dev->dev_attrib.unmap_granularity); |
c66ac9db NB |
695 | return 0; |
696 | } | |
d30cd123 | 697 | EXPORT_SYMBOL(se_dev_set_unmap_granularity); |
c66ac9db NB |
698 | |
699 | int se_dev_set_unmap_granularity_alignment( | |
700 | struct se_device *dev, | |
701 | u32 unmap_granularity_alignment) | |
702 | { | |
0fd97ccf | 703 | dev->dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment; |
6708bb27 | 704 | pr_debug("dev[%p]: Set unmap_granularity_alignment: %u\n", |
0fd97ccf | 705 | dev, dev->dev_attrib.unmap_granularity_alignment); |
c66ac9db NB |
706 | return 0; |
707 | } | |
d30cd123 | 708 | EXPORT_SYMBOL(se_dev_set_unmap_granularity_alignment); |
c66ac9db | 709 | |
773cbaf7 NB |
710 | int se_dev_set_max_write_same_len( |
711 | struct se_device *dev, | |
712 | u32 max_write_same_len) | |
713 | { | |
714 | dev->dev_attrib.max_write_same_len = max_write_same_len; | |
715 | pr_debug("dev[%p]: Set max_write_same_len: %u\n", | |
716 | dev, dev->dev_attrib.max_write_same_len); | |
717 | return 0; | |
718 | } | |
d30cd123 | 719 | EXPORT_SYMBOL(se_dev_set_max_write_same_len); |
773cbaf7 | 720 | |
adfa9570 TB |
721 | static void dev_set_t10_wwn_model_alias(struct se_device *dev) |
722 | { | |
723 | const char *configname; | |
724 | ||
725 | configname = config_item_name(&dev->dev_group.cg_item); | |
726 | if (strlen(configname) >= 16) { | |
727 | pr_warn("dev[%p]: Backstore name '%s' is too long for " | |
728 | "INQUIRY_MODEL, truncating to 16 bytes\n", dev, | |
729 | configname); | |
730 | } | |
731 | snprintf(&dev->t10_wwn.model[0], 16, "%s", configname); | |
732 | } | |
733 | ||
734 | int se_dev_set_emulate_model_alias(struct se_device *dev, int flag) | |
735 | { | |
736 | if (dev->export_count) { | |
737 | pr_err("dev[%p]: Unable to change model alias" | |
738 | " while export_count is %d\n", | |
739 | dev, dev->export_count); | |
740 | return -EINVAL; | |
741 | } | |
742 | ||
743 | if (flag != 0 && flag != 1) { | |
744 | pr_err("Illegal value %d\n", flag); | |
745 | return -EINVAL; | |
746 | } | |
747 | ||
748 | if (flag) { | |
749 | dev_set_t10_wwn_model_alias(dev); | |
750 | } else { | |
751 | strncpy(&dev->t10_wwn.model[0], | |
752 | dev->transport->inquiry_prod, 16); | |
753 | } | |
754 | dev->dev_attrib.emulate_model_alias = flag; | |
755 | ||
756 | return 0; | |
757 | } | |
d30cd123 | 758 | EXPORT_SYMBOL(se_dev_set_emulate_model_alias); |
adfa9570 | 759 | |
c66ac9db NB |
760 | int se_dev_set_emulate_dpo(struct se_device *dev, int flag) |
761 | { | |
f55918fa | 762 | if (flag != 0 && flag != 1) { |
6708bb27 | 763 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 764 | return -EINVAL; |
c66ac9db | 765 | } |
f55918fa | 766 | |
c638830d AG |
767 | if (flag) { |
768 | pr_err("dpo_emulated not supported\n"); | |
769 | return -EINVAL; | |
770 | } | |
771 | ||
772 | return 0; | |
c66ac9db | 773 | } |
d30cd123 | 774 | EXPORT_SYMBOL(se_dev_set_emulate_dpo); |
c66ac9db NB |
775 | |
776 | int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) | |
777 | { | |
f55918fa | 778 | if (flag != 0 && flag != 1) { |
6708bb27 | 779 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 780 | return -EINVAL; |
c66ac9db | 781 | } |
4b36b68c NB |
782 | if (flag && |
783 | dev->transport->get_write_cache) { | |
86d65dc4 AG |
784 | pr_warn("emulate_fua_write not supported for this device, ignoring\n"); |
785 | return 0; | |
4b36b68c NB |
786 | } |
787 | if (dev->export_count) { | |
788 | pr_err("emulate_fua_write cannot be changed with active" | |
789 | " exports: %d\n", dev->export_count); | |
790 | return -EINVAL; | |
791 | } | |
0fd97ccf | 792 | dev->dev_attrib.emulate_fua_write = flag; |
6708bb27 | 793 | pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", |
0fd97ccf | 794 | dev, dev->dev_attrib.emulate_fua_write); |
c66ac9db NB |
795 | return 0; |
796 | } | |
d30cd123 | 797 | EXPORT_SYMBOL(se_dev_set_emulate_fua_write); |
c66ac9db NB |
798 | |
799 | int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) | |
800 | { | |
f55918fa | 801 | if (flag != 0 && flag != 1) { |
6708bb27 | 802 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 803 | return -EINVAL; |
c66ac9db | 804 | } |
f55918fa | 805 | |
c638830d AG |
806 | if (flag) { |
807 | pr_err("ua read emulated not supported\n"); | |
808 | return -EINVAL; | |
809 | } | |
810 | ||
811 | return 0; | |
c66ac9db | 812 | } |
d30cd123 | 813 | EXPORT_SYMBOL(se_dev_set_emulate_fua_read); |
c66ac9db NB |
814 | |
815 | int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) | |
816 | { | |
f55918fa | 817 | if (flag != 0 && flag != 1) { |
6708bb27 | 818 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 819 | return -EINVAL; |
c66ac9db | 820 | } |
07b8dae3 AG |
821 | if (flag && |
822 | dev->transport->get_write_cache) { | |
823 | pr_err("emulate_write_cache not supported for this device\n"); | |
824 | return -EINVAL; | |
d0c8b259 | 825 | } |
4b36b68c NB |
826 | if (dev->export_count) { |
827 | pr_err("emulate_write_cache cannot be changed with active" | |
828 | " exports: %d\n", dev->export_count); | |
829 | return -EINVAL; | |
830 | } | |
0fd97ccf | 831 | dev->dev_attrib.emulate_write_cache = flag; |
6708bb27 | 832 | pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", |
0fd97ccf | 833 | dev, dev->dev_attrib.emulate_write_cache); |
c66ac9db NB |
834 | return 0; |
835 | } | |
d30cd123 | 836 | EXPORT_SYMBOL(se_dev_set_emulate_write_cache); |
c66ac9db NB |
837 | |
838 | int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) | |
839 | { | |
840 | if ((flag != 0) && (flag != 1) && (flag != 2)) { | |
6708bb27 | 841 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 842 | return -EINVAL; |
c66ac9db NB |
843 | } |
844 | ||
0fd97ccf | 845 | if (dev->export_count) { |
6708bb27 | 846 | pr_err("dev[%p]: Unable to change SE Device" |
0fd97ccf CH |
847 | " UA_INTRLCK_CTRL while export_count is %d\n", |
848 | dev, dev->export_count); | |
e3d6f909 | 849 | return -EINVAL; |
c66ac9db | 850 | } |
0fd97ccf | 851 | dev->dev_attrib.emulate_ua_intlck_ctrl = flag; |
6708bb27 | 852 | pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", |
0fd97ccf | 853 | dev, dev->dev_attrib.emulate_ua_intlck_ctrl); |
c66ac9db NB |
854 | |
855 | return 0; | |
856 | } | |
d30cd123 | 857 | EXPORT_SYMBOL(se_dev_set_emulate_ua_intlck_ctrl); |
c66ac9db NB |
858 | |
859 | int se_dev_set_emulate_tas(struct se_device *dev, int flag) | |
860 | { | |
861 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 862 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 863 | return -EINVAL; |
c66ac9db NB |
864 | } |
865 | ||
0fd97ccf | 866 | if (dev->export_count) { |
6708bb27 | 867 | pr_err("dev[%p]: Unable to change SE Device TAS while" |
0fd97ccf CH |
868 | " export_count is %d\n", |
869 | dev, dev->export_count); | |
e3d6f909 | 870 | return -EINVAL; |
c66ac9db | 871 | } |
0fd97ccf | 872 | dev->dev_attrib.emulate_tas = flag; |
6708bb27 | 873 | pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", |
0fd97ccf | 874 | dev, (dev->dev_attrib.emulate_tas) ? "Enabled" : "Disabled"); |
c66ac9db NB |
875 | |
876 | return 0; | |
877 | } | |
d30cd123 | 878 | EXPORT_SYMBOL(se_dev_set_emulate_tas); |
c66ac9db NB |
879 | |
880 | int se_dev_set_emulate_tpu(struct se_device *dev, int flag) | |
881 | { | |
882 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 883 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 884 | return -EINVAL; |
c66ac9db NB |
885 | } |
886 | /* | |
887 | * We expect this value to be non-zero when generic Block Layer | |
888 | * Discard supported is detected iblock_create_virtdevice(). | |
889 | */ | |
0fd97ccf | 890 | if (flag && !dev->dev_attrib.max_unmap_block_desc_count) { |
6708bb27 | 891 | pr_err("Generic Block Discard not supported\n"); |
c66ac9db NB |
892 | return -ENOSYS; |
893 | } | |
894 | ||
0fd97ccf | 895 | dev->dev_attrib.emulate_tpu = flag; |
6708bb27 | 896 | pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", |
c66ac9db NB |
897 | dev, flag); |
898 | return 0; | |
899 | } | |
d30cd123 | 900 | EXPORT_SYMBOL(se_dev_set_emulate_tpu); |
c66ac9db NB |
901 | |
902 | int se_dev_set_emulate_tpws(struct se_device *dev, int flag) | |
903 | { | |
904 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 905 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 906 | return -EINVAL; |
c66ac9db NB |
907 | } |
908 | /* | |
909 | * We expect this value to be non-zero when generic Block Layer | |
910 | * Discard supported is detected iblock_create_virtdevice(). | |
911 | */ | |
0fd97ccf | 912 | if (flag && !dev->dev_attrib.max_unmap_block_desc_count) { |
6708bb27 | 913 | pr_err("Generic Block Discard not supported\n"); |
c66ac9db NB |
914 | return -ENOSYS; |
915 | } | |
916 | ||
0fd97ccf | 917 | dev->dev_attrib.emulate_tpws = flag; |
6708bb27 | 918 | pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", |
c66ac9db NB |
919 | dev, flag); |
920 | return 0; | |
921 | } | |
d30cd123 | 922 | EXPORT_SYMBOL(se_dev_set_emulate_tpws); |
c66ac9db | 923 | |
0123a9ec NB |
924 | int se_dev_set_emulate_caw(struct se_device *dev, int flag) |
925 | { | |
926 | if (flag != 0 && flag != 1) { | |
927 | pr_err("Illegal value %d\n", flag); | |
928 | return -EINVAL; | |
929 | } | |
930 | dev->dev_attrib.emulate_caw = flag; | |
931 | pr_debug("dev[%p]: SE Device CompareAndWrite (AtomicTestandSet): %d\n", | |
932 | dev, flag); | |
933 | ||
934 | return 0; | |
935 | } | |
d30cd123 | 936 | EXPORT_SYMBOL(se_dev_set_emulate_caw); |
0123a9ec | 937 | |
d397a445 NB |
938 | int se_dev_set_emulate_3pc(struct se_device *dev, int flag) |
939 | { | |
940 | if (flag != 0 && flag != 1) { | |
941 | pr_err("Illegal value %d\n", flag); | |
942 | return -EINVAL; | |
943 | } | |
944 | dev->dev_attrib.emulate_3pc = flag; | |
945 | pr_debug("dev[%p]: SE Device 3rd Party Copy (EXTENDED_COPY): %d\n", | |
946 | dev, flag); | |
947 | ||
948 | return 0; | |
949 | } | |
d30cd123 | 950 | EXPORT_SYMBOL(se_dev_set_emulate_3pc); |
d397a445 | 951 | |
2ed22c9c NB |
952 | int se_dev_set_pi_prot_type(struct se_device *dev, int flag) |
953 | { | |
954 | int rc, old_prot = dev->dev_attrib.pi_prot_type; | |
955 | ||
956 | if (flag != 0 && flag != 1 && flag != 2 && flag != 3) { | |
957 | pr_err("Illegal value %d for pi_prot_type\n", flag); | |
958 | return -EINVAL; | |
959 | } | |
960 | if (flag == 2) { | |
961 | pr_err("DIF TYPE2 protection currently not supported\n"); | |
962 | return -ENOSYS; | |
963 | } | |
964 | if (dev->dev_attrib.hw_pi_prot_type) { | |
965 | pr_warn("DIF protection enabled on underlying hardware," | |
966 | " ignoring\n"); | |
967 | return 0; | |
968 | } | |
969 | if (!dev->transport->init_prot || !dev->transport->free_prot) { | |
448ba904 AG |
970 | /* 0 is only allowed value for non-supporting backends */ |
971 | if (flag == 0) | |
972 | return 0; | |
973 | ||
2ed22c9c NB |
974 | pr_err("DIF protection not supported by backend: %s\n", |
975 | dev->transport->name); | |
976 | return -ENOSYS; | |
977 | } | |
978 | if (!(dev->dev_flags & DF_CONFIGURED)) { | |
979 | pr_err("DIF protection requires device to be configured\n"); | |
980 | return -ENODEV; | |
981 | } | |
982 | if (dev->export_count) { | |
983 | pr_err("dev[%p]: Unable to change SE Device PROT type while" | |
984 | " export_count is %d\n", dev, dev->export_count); | |
985 | return -EINVAL; | |
986 | } | |
987 | ||
988 | dev->dev_attrib.pi_prot_type = flag; | |
989 | ||
990 | if (flag && !old_prot) { | |
991 | rc = dev->transport->init_prot(dev); | |
992 | if (rc) { | |
993 | dev->dev_attrib.pi_prot_type = old_prot; | |
994 | return rc; | |
995 | } | |
996 | ||
997 | } else if (!flag && old_prot) { | |
998 | dev->transport->free_prot(dev); | |
999 | } | |
1000 | pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag); | |
1001 | ||
1002 | return 0; | |
1003 | } | |
d30cd123 | 1004 | EXPORT_SYMBOL(se_dev_set_pi_prot_type); |
2ed22c9c NB |
1005 | |
1006 | int se_dev_set_pi_prot_format(struct se_device *dev, int flag) | |
1007 | { | |
1008 | int rc; | |
1009 | ||
1010 | if (!flag) | |
1011 | return 0; | |
1012 | ||
1013 | if (flag != 1) { | |
1014 | pr_err("Illegal value %d for pi_prot_format\n", flag); | |
1015 | return -EINVAL; | |
1016 | } | |
1017 | if (!dev->transport->format_prot) { | |
1018 | pr_err("DIF protection format not supported by backend %s\n", | |
1019 | dev->transport->name); | |
1020 | return -ENOSYS; | |
1021 | } | |
1022 | if (!(dev->dev_flags & DF_CONFIGURED)) { | |
1023 | pr_err("DIF protection format requires device to be configured\n"); | |
1024 | return -ENODEV; | |
1025 | } | |
1026 | if (dev->export_count) { | |
1027 | pr_err("dev[%p]: Unable to format SE Device PROT type while" | |
1028 | " export_count is %d\n", dev, dev->export_count); | |
1029 | return -EINVAL; | |
1030 | } | |
1031 | ||
1032 | rc = dev->transport->format_prot(dev); | |
1033 | if (rc) | |
1034 | return rc; | |
1035 | ||
1036 | pr_debug("dev[%p]: SE Device Protection Format complete\n", dev); | |
1037 | ||
1038 | return 0; | |
1039 | } | |
d30cd123 | 1040 | EXPORT_SYMBOL(se_dev_set_pi_prot_format); |
2ed22c9c | 1041 | |
c66ac9db NB |
1042 | int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) |
1043 | { | |
1044 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 1045 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 1046 | return -EINVAL; |
c66ac9db | 1047 | } |
0fd97ccf | 1048 | dev->dev_attrib.enforce_pr_isids = flag; |
6708bb27 | 1049 | pr_debug("dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev, |
0fd97ccf | 1050 | (dev->dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); |
c66ac9db NB |
1051 | return 0; |
1052 | } | |
d30cd123 | 1053 | EXPORT_SYMBOL(se_dev_set_enforce_pr_isids); |
c66ac9db | 1054 | |
92404e60 NB |
1055 | int se_dev_set_force_pr_aptpl(struct se_device *dev, int flag) |
1056 | { | |
1057 | if ((flag != 0) && (flag != 1)) { | |
1058 | printk(KERN_ERR "Illegal value %d\n", flag); | |
1059 | return -EINVAL; | |
1060 | } | |
1061 | if (dev->export_count) { | |
1062 | pr_err("dev[%p]: Unable to set force_pr_aptpl while" | |
1063 | " export_count is %d\n", dev, dev->export_count); | |
1064 | return -EINVAL; | |
1065 | } | |
1066 | ||
1067 | dev->dev_attrib.force_pr_aptpl = flag; | |
1068 | pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", dev, flag); | |
1069 | return 0; | |
1070 | } | |
d30cd123 | 1071 | EXPORT_SYMBOL(se_dev_set_force_pr_aptpl); |
92404e60 | 1072 | |
e22a7f07 RD |
1073 | int se_dev_set_is_nonrot(struct se_device *dev, int flag) |
1074 | { | |
1075 | if ((flag != 0) && (flag != 1)) { | |
1076 | printk(KERN_ERR "Illegal value %d\n", flag); | |
1077 | return -EINVAL; | |
1078 | } | |
0fd97ccf | 1079 | dev->dev_attrib.is_nonrot = flag; |
5de619a3 | 1080 | pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n", |
e22a7f07 RD |
1081 | dev, flag); |
1082 | return 0; | |
1083 | } | |
d30cd123 | 1084 | EXPORT_SYMBOL(se_dev_set_is_nonrot); |
e22a7f07 | 1085 | |
5de619a3 NB |
1086 | int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) |
1087 | { | |
1088 | if (flag != 0) { | |
1089 | printk(KERN_ERR "dev[%p]: SE Device emulatation of restricted" | |
1090 | " reordering not implemented\n", dev); | |
1091 | return -ENOSYS; | |
1092 | } | |
0fd97ccf | 1093 | dev->dev_attrib.emulate_rest_reord = flag; |
5de619a3 NB |
1094 | pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag); |
1095 | return 0; | |
1096 | } | |
d30cd123 | 1097 | EXPORT_SYMBOL(se_dev_set_emulate_rest_reord); |
5de619a3 | 1098 | |
c66ac9db NB |
1099 | /* |
1100 | * Note, this can only be called on unexported SE Device Object. | |
1101 | */ | |
1102 | int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) | |
1103 | { | |
0fd97ccf | 1104 | if (dev->export_count) { |
6708bb27 | 1105 | pr_err("dev[%p]: Unable to change SE Device TCQ while" |
0fd97ccf CH |
1106 | " export_count is %d\n", |
1107 | dev, dev->export_count); | |
e3d6f909 | 1108 | return -EINVAL; |
c66ac9db | 1109 | } |
6708bb27 AG |
1110 | if (!queue_depth) { |
1111 | pr_err("dev[%p]: Illegal ZERO value for queue" | |
c66ac9db | 1112 | "_depth\n", dev); |
e3d6f909 | 1113 | return -EINVAL; |
c66ac9db NB |
1114 | } |
1115 | ||
4b2f57e5 | 1116 | if (queue_depth > dev->dev_attrib.queue_depth) { |
0fd97ccf | 1117 | if (queue_depth > dev->dev_attrib.hw_queue_depth) { |
4b2f57e5 NB |
1118 | pr_err("dev[%p]: Passed queue_depth:" |
1119 | " %u exceeds TCM/SE_Device MAX" | |
1120 | " TCQ: %u\n", dev, queue_depth, | |
0fd97ccf | 1121 | dev->dev_attrib.hw_queue_depth); |
e3d6f909 | 1122 | return -EINVAL; |
c66ac9db | 1123 | } |
c66ac9db | 1124 | } |
0fd97ccf | 1125 | dev->dev_attrib.queue_depth = dev->queue_depth = queue_depth; |
6708bb27 | 1126 | pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", |
c66ac9db NB |
1127 | dev, queue_depth); |
1128 | return 0; | |
1129 | } | |
d30cd123 | 1130 | EXPORT_SYMBOL(se_dev_set_queue_depth); |
c66ac9db | 1131 | |
c66ac9db NB |
1132 | int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) |
1133 | { | |
0fd97ccf | 1134 | if (dev->export_count) { |
6708bb27 | 1135 | pr_err("dev[%p]: Unable to change SE Device" |
0fd97ccf CH |
1136 | " optimal_sectors while export_count is %d\n", |
1137 | dev, dev->export_count); | |
c66ac9db NB |
1138 | return -EINVAL; |
1139 | } | |
046ba642 | 1140 | if (optimal_sectors > dev->dev_attrib.hw_max_sectors) { |
6708bb27 | 1141 | pr_err("dev[%p]: Passed optimal_sectors %u cannot be" |
046ba642 NB |
1142 | " greater than hw_max_sectors: %u\n", dev, |
1143 | optimal_sectors, dev->dev_attrib.hw_max_sectors); | |
c66ac9db NB |
1144 | return -EINVAL; |
1145 | } | |
1146 | ||
0fd97ccf | 1147 | dev->dev_attrib.optimal_sectors = optimal_sectors; |
6708bb27 | 1148 | pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", |
c66ac9db NB |
1149 | dev, optimal_sectors); |
1150 | return 0; | |
1151 | } | |
d30cd123 | 1152 | EXPORT_SYMBOL(se_dev_set_optimal_sectors); |
c66ac9db NB |
1153 | |
1154 | int se_dev_set_block_size(struct se_device *dev, u32 block_size) | |
1155 | { | |
0fd97ccf | 1156 | if (dev->export_count) { |
6708bb27 | 1157 | pr_err("dev[%p]: Unable to change SE Device block_size" |
0fd97ccf CH |
1158 | " while export_count is %d\n", |
1159 | dev, dev->export_count); | |
e3d6f909 | 1160 | return -EINVAL; |
c66ac9db NB |
1161 | } |
1162 | ||
1163 | if ((block_size != 512) && | |
1164 | (block_size != 1024) && | |
1165 | (block_size != 2048) && | |
1166 | (block_size != 4096)) { | |
6708bb27 | 1167 | pr_err("dev[%p]: Illegal value for block_device: %u" |
c66ac9db NB |
1168 | " for SE device, must be 512, 1024, 2048 or 4096\n", |
1169 | dev, block_size); | |
e3d6f909 | 1170 | return -EINVAL; |
c66ac9db NB |
1171 | } |
1172 | ||
0fd97ccf | 1173 | dev->dev_attrib.block_size = block_size; |
6708bb27 | 1174 | pr_debug("dev[%p]: SE Device block_size changed to %u\n", |
c66ac9db | 1175 | dev, block_size); |
95cadace NB |
1176 | |
1177 | if (dev->dev_attrib.max_bytes_per_io) | |
1178 | dev->dev_attrib.hw_max_sectors = | |
1179 | dev->dev_attrib.max_bytes_per_io / block_size; | |
1180 | ||
c66ac9db NB |
1181 | return 0; |
1182 | } | |
d30cd123 | 1183 | EXPORT_SYMBOL(se_dev_set_block_size); |
c66ac9db NB |
1184 | |
1185 | struct se_lun *core_dev_add_lun( | |
1186 | struct se_portal_group *tpg, | |
c66ac9db | 1187 | struct se_device *dev, |
2af7973a | 1188 | u32 unpacked_lun) |
c66ac9db | 1189 | { |
2af7973a | 1190 | struct se_lun *lun; |
8d9efe53 | 1191 | int rc; |
c66ac9db | 1192 | |
d344f8a1 | 1193 | lun = core_tpg_alloc_lun(tpg, unpacked_lun); |
2af7973a AG |
1194 | if (IS_ERR(lun)) |
1195 | return lun; | |
c66ac9db | 1196 | |
d344f8a1 | 1197 | rc = core_tpg_add_lun(tpg, lun, |
58d92618 | 1198 | TRANSPORT_LUNFLAGS_READ_WRITE, dev); |
8d9efe53 SAS |
1199 | if (rc < 0) |
1200 | return ERR_PTR(rc); | |
c66ac9db | 1201 | |
6708bb27 | 1202 | pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" |
e3d6f909 | 1203 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
2af7973a | 1204 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
2dca673b | 1205 | tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); |
c66ac9db NB |
1206 | /* |
1207 | * Update LUN maps for dynamically added initiators when | |
1208 | * generate_node_acl is enabled. | |
1209 | */ | |
e3d6f909 | 1210 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
c66ac9db | 1211 | struct se_node_acl *acl; |
28638887 | 1212 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 1213 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
052605c6 NB |
1214 | if (acl->dynamic_node_acl && |
1215 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || | |
1216 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { | |
28638887 | 1217 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db | 1218 | core_tpg_add_node_to_devs(acl, tpg); |
28638887 | 1219 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
1220 | } |
1221 | } | |
28638887 | 1222 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
1223 | } |
1224 | ||
2af7973a | 1225 | return lun; |
c66ac9db NB |
1226 | } |
1227 | ||
1228 | /* core_dev_del_lun(): | |
1229 | * | |
1230 | * | |
1231 | */ | |
cd9d7cba | 1232 | void core_dev_del_lun( |
c66ac9db | 1233 | struct se_portal_group *tpg, |
cd9d7cba | 1234 | struct se_lun *lun) |
c66ac9db | 1235 | { |
cd9d7cba | 1236 | pr_debug("%s_TPG[%u]_LUN[%u] - Deactivating %s Logical Unit from" |
e3d6f909 | 1237 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
cd9d7cba | 1238 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
e3d6f909 | 1239 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db | 1240 | |
cd9d7cba | 1241 | core_tpg_remove_lun(tpg, lun); |
c66ac9db NB |
1242 | } |
1243 | ||
1244 | struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun) | |
1245 | { | |
1246 | struct se_lun *lun; | |
1247 | ||
1248 | spin_lock(&tpg->tpg_lun_lock); | |
1249 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { | |
6708bb27 | 1250 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS" |
c66ac9db | 1251 | "_PER_TPG-1: %u for Target Portal Group: %hu\n", |
e3d6f909 | 1252 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
c66ac9db | 1253 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
e3d6f909 | 1254 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
c66ac9db NB |
1255 | spin_unlock(&tpg->tpg_lun_lock); |
1256 | return NULL; | |
1257 | } | |
4a5a75f3 | 1258 | lun = tpg->tpg_lun_list[unpacked_lun]; |
c66ac9db NB |
1259 | |
1260 | if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { | |
6708bb27 | 1261 | pr_err("%s Logical Unit Number: %u is not free on" |
c66ac9db | 1262 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1263 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1264 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1265 | spin_unlock(&tpg->tpg_lun_lock); |
1266 | return NULL; | |
1267 | } | |
1268 | spin_unlock(&tpg->tpg_lun_lock); | |
1269 | ||
1270 | return lun; | |
1271 | } | |
1272 | ||
1273 | /* core_dev_get_lun(): | |
1274 | * | |
1275 | * | |
1276 | */ | |
1277 | static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun) | |
1278 | { | |
1279 | struct se_lun *lun; | |
1280 | ||
1281 | spin_lock(&tpg->tpg_lun_lock); | |
1282 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { | |
6708bb27 | 1283 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER" |
c66ac9db | 1284 | "_TPG-1: %u for Target Portal Group: %hu\n", |
e3d6f909 | 1285 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
c66ac9db | 1286 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
e3d6f909 | 1287 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
c66ac9db NB |
1288 | spin_unlock(&tpg->tpg_lun_lock); |
1289 | return NULL; | |
1290 | } | |
4a5a75f3 | 1291 | lun = tpg->tpg_lun_list[unpacked_lun]; |
c66ac9db NB |
1292 | |
1293 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { | |
6708bb27 | 1294 | pr_err("%s Logical Unit Number: %u is not active on" |
c66ac9db | 1295 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1296 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1297 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1298 | spin_unlock(&tpg->tpg_lun_lock); |
1299 | return NULL; | |
1300 | } | |
1301 | spin_unlock(&tpg->tpg_lun_lock); | |
1302 | ||
1303 | return lun; | |
1304 | } | |
1305 | ||
1306 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( | |
1307 | struct se_portal_group *tpg, | |
fcf29481 | 1308 | struct se_node_acl *nacl, |
c66ac9db | 1309 | u32 mapped_lun, |
c66ac9db NB |
1310 | int *ret) |
1311 | { | |
1312 | struct se_lun_acl *lacl; | |
c66ac9db | 1313 | |
fcf29481 | 1314 | if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) { |
6708bb27 | 1315 | pr_err("%s InitiatorName exceeds maximum size.\n", |
e3d6f909 | 1316 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
1317 | *ret = -EOVERFLOW; |
1318 | return NULL; | |
1319 | } | |
c66ac9db | 1320 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); |
6708bb27 AG |
1321 | if (!lacl) { |
1322 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); | |
c66ac9db NB |
1323 | *ret = -ENOMEM; |
1324 | return NULL; | |
1325 | } | |
1326 | ||
1327 | INIT_LIST_HEAD(&lacl->lacl_list); | |
1328 | lacl->mapped_lun = mapped_lun; | |
1329 | lacl->se_lun_nacl = nacl; | |
fcf29481 NB |
1330 | snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", |
1331 | nacl->initiatorname); | |
c66ac9db NB |
1332 | |
1333 | return lacl; | |
1334 | } | |
1335 | ||
1336 | int core_dev_add_initiator_node_lun_acl( | |
1337 | struct se_portal_group *tpg, | |
1338 | struct se_lun_acl *lacl, | |
1339 | u32 unpacked_lun, | |
1340 | u32 lun_access) | |
1341 | { | |
1342 | struct se_lun *lun; | |
1343 | struct se_node_acl *nacl; | |
1344 | ||
1345 | lun = core_dev_get_lun(tpg, unpacked_lun); | |
6708bb27 AG |
1346 | if (!lun) { |
1347 | pr_err("%s Logical Unit Number: %u is not active on" | |
c66ac9db | 1348 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1349 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1350 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1351 | return -EINVAL; |
1352 | } | |
1353 | ||
1354 | nacl = lacl->se_lun_nacl; | |
6708bb27 | 1355 | if (!nacl) |
c66ac9db NB |
1356 | return -EINVAL; |
1357 | ||
1358 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && | |
1359 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) | |
1360 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; | |
1361 | ||
1362 | lacl->se_lun = lun; | |
1363 | ||
e80ac6c4 AG |
1364 | if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun, |
1365 | lun_access, nacl, tpg) < 0) | |
c66ac9db NB |
1366 | return -EINVAL; |
1367 | ||
1368 | spin_lock(&lun->lun_acl_lock); | |
1369 | list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); | |
33940d09 | 1370 | atomic_inc_mb(&lun->lun_acl_count); |
c66ac9db NB |
1371 | spin_unlock(&lun->lun_acl_lock); |
1372 | ||
6708bb27 | 1373 | pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " |
e3d6f909 AG |
1374 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
1375 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun, | |
c66ac9db NB |
1376 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
1377 | lacl->initiatorname); | |
1378 | /* | |
1379 | * Check to see if there are any existing persistent reservation APTPL | |
1380 | * pre-registrations that need to be enabled for this LUN ACL.. | |
1381 | */ | |
e2480563 NB |
1382 | core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, nacl, |
1383 | lacl->mapped_lun); | |
c66ac9db NB |
1384 | return 0; |
1385 | } | |
1386 | ||
1387 | /* core_dev_del_initiator_node_lun_acl(): | |
1388 | * | |
1389 | * | |
1390 | */ | |
1391 | int core_dev_del_initiator_node_lun_acl( | |
1392 | struct se_portal_group *tpg, | |
1393 | struct se_lun *lun, | |
1394 | struct se_lun_acl *lacl) | |
1395 | { | |
1396 | struct se_node_acl *nacl; | |
1397 | ||
1398 | nacl = lacl->se_lun_nacl; | |
6708bb27 | 1399 | if (!nacl) |
c66ac9db NB |
1400 | return -EINVAL; |
1401 | ||
1402 | spin_lock(&lun->lun_acl_lock); | |
1403 | list_del(&lacl->lacl_list); | |
33940d09 | 1404 | atomic_dec_mb(&lun->lun_acl_count); |
c66ac9db NB |
1405 | spin_unlock(&lun->lun_acl_lock); |
1406 | ||
e80ac6c4 AG |
1407 | core_disable_device_list_for_node(lun, NULL, lacl->mapped_lun, |
1408 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); | |
c66ac9db NB |
1409 | |
1410 | lacl->se_lun = NULL; | |
1411 | ||
6708bb27 | 1412 | pr_debug("%s_TPG[%hu]_LUN[%u] - Removed ACL for" |
c66ac9db | 1413 | " InitiatorNode: %s Mapped LUN: %u\n", |
e3d6f909 AG |
1414 | tpg->se_tpg_tfo->get_fabric_name(), |
1415 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, | |
c66ac9db NB |
1416 | lacl->initiatorname, lacl->mapped_lun); |
1417 | ||
1418 | return 0; | |
1419 | } | |
1420 | ||
1421 | void core_dev_free_initiator_node_lun_acl( | |
1422 | struct se_portal_group *tpg, | |
1423 | struct se_lun_acl *lacl) | |
1424 | { | |
6708bb27 | 1425 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
e3d6f909 AG |
1426 | " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
1427 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
1428 | tpg->se_tpg_tfo->get_fabric_name(), | |
c66ac9db NB |
1429 | lacl->initiatorname, lacl->mapped_lun); |
1430 | ||
1431 | kfree(lacl); | |
1432 | } | |
1433 | ||
0fd97ccf CH |
1434 | static void scsi_dump_inquiry(struct se_device *dev) |
1435 | { | |
1436 | struct t10_wwn *wwn = &dev->t10_wwn; | |
1437 | char buf[17]; | |
1438 | int i, device_type; | |
1439 | /* | |
1440 | * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer | |
1441 | */ | |
1442 | for (i = 0; i < 8; i++) | |
1443 | if (wwn->vendor[i] >= 0x20) | |
1444 | buf[i] = wwn->vendor[i]; | |
1445 | else | |
1446 | buf[i] = ' '; | |
1447 | buf[i] = '\0'; | |
1448 | pr_debug(" Vendor: %s\n", buf); | |
1449 | ||
1450 | for (i = 0; i < 16; i++) | |
1451 | if (wwn->model[i] >= 0x20) | |
1452 | buf[i] = wwn->model[i]; | |
1453 | else | |
1454 | buf[i] = ' '; | |
1455 | buf[i] = '\0'; | |
1456 | pr_debug(" Model: %s\n", buf); | |
1457 | ||
1458 | for (i = 0; i < 4; i++) | |
1459 | if (wwn->revision[i] >= 0x20) | |
1460 | buf[i] = wwn->revision[i]; | |
1461 | else | |
1462 | buf[i] = ' '; | |
1463 | buf[i] = '\0'; | |
1464 | pr_debug(" Revision: %s\n", buf); | |
1465 | ||
1466 | device_type = dev->transport->get_device_type(dev); | |
1467 | pr_debug(" Type: %s ", scsi_device_type(device_type)); | |
0fd97ccf CH |
1468 | } |
1469 | ||
1470 | struct se_device *target_alloc_device(struct se_hba *hba, const char *name) | |
1471 | { | |
1472 | struct se_device *dev; | |
4863e525 | 1473 | struct se_lun *xcopy_lun; |
0fd97ccf CH |
1474 | |
1475 | dev = hba->transport->alloc_device(hba, name); | |
1476 | if (!dev) | |
1477 | return NULL; | |
1478 | ||
0ff87549 | 1479 | dev->dev_link_magic = SE_DEV_LINK_MAGIC; |
0fd97ccf CH |
1480 | dev->se_hba = hba; |
1481 | dev->transport = hba->transport; | |
2ed22c9c | 1482 | dev->prot_length = sizeof(struct se_dif_v1_tuple); |
0fd97ccf CH |
1483 | |
1484 | INIT_LIST_HEAD(&dev->dev_list); | |
1485 | INIT_LIST_HEAD(&dev->dev_sep_list); | |
1486 | INIT_LIST_HEAD(&dev->dev_tmr_list); | |
1487 | INIT_LIST_HEAD(&dev->delayed_cmd_list); | |
1488 | INIT_LIST_HEAD(&dev->state_list); | |
1489 | INIT_LIST_HEAD(&dev->qf_cmd_list); | |
d9ea32bf | 1490 | INIT_LIST_HEAD(&dev->g_dev_node); |
0fd97ccf CH |
1491 | spin_lock_init(&dev->execute_task_lock); |
1492 | spin_lock_init(&dev->delayed_cmd_lock); | |
1493 | spin_lock_init(&dev->dev_reservation_lock); | |
1494 | spin_lock_init(&dev->se_port_lock); | |
1495 | spin_lock_init(&dev->se_tmr_lock); | |
1496 | spin_lock_init(&dev->qf_cmd_lock); | |
68ff9b9b | 1497 | sema_init(&dev->caw_sem, 1); |
0fd97ccf CH |
1498 | atomic_set(&dev->dev_ordered_id, 0); |
1499 | INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list); | |
1500 | spin_lock_init(&dev->t10_wwn.t10_vpd_lock); | |
1501 | INIT_LIST_HEAD(&dev->t10_pr.registration_list); | |
1502 | INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list); | |
1503 | spin_lock_init(&dev->t10_pr.registration_lock); | |
1504 | spin_lock_init(&dev->t10_pr.aptpl_reg_lock); | |
1505 | INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list); | |
1506 | spin_lock_init(&dev->t10_alua.tg_pt_gps_lock); | |
c66094bf HR |
1507 | INIT_LIST_HEAD(&dev->t10_alua.lba_map_list); |
1508 | spin_lock_init(&dev->t10_alua.lba_map_lock); | |
0fd97ccf | 1509 | |
0fd97ccf CH |
1510 | dev->t10_wwn.t10_dev = dev; |
1511 | dev->t10_alua.t10_dev = dev; | |
1512 | ||
1513 | dev->dev_attrib.da_dev = dev; | |
adfa9570 | 1514 | dev->dev_attrib.emulate_model_alias = DA_EMULATE_MODEL_ALIAS; |
0fd97ccf CH |
1515 | dev->dev_attrib.emulate_dpo = DA_EMULATE_DPO; |
1516 | dev->dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE; | |
1517 | dev->dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ; | |
1518 | dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; | |
1519 | dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; | |
1520 | dev->dev_attrib.emulate_tas = DA_EMULATE_TAS; | |
1521 | dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; | |
1522 | dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; | |
0123a9ec | 1523 | dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; |
d397a445 | 1524 | dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC; |
2ed22c9c | 1525 | dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT; |
0fd97ccf | 1526 | dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; |
92404e60 | 1527 | dev->dev_attrib.force_pr_aptpl = DA_FORCE_PR_APTPL; |
0fd97ccf CH |
1528 | dev->dev_attrib.is_nonrot = DA_IS_NONROT; |
1529 | dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; | |
1530 | dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; | |
1531 | dev->dev_attrib.max_unmap_block_desc_count = | |
1532 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; | |
1533 | dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; | |
1534 | dev->dev_attrib.unmap_granularity_alignment = | |
1535 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; | |
773cbaf7 | 1536 | dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; |
0fd97ccf | 1537 | |
4863e525 NB |
1538 | xcopy_lun = &dev->xcopy_lun; |
1539 | xcopy_lun->lun_se_dev = dev; | |
1540 | init_completion(&xcopy_lun->lun_shutdown_comp); | |
1541 | INIT_LIST_HEAD(&xcopy_lun->lun_acl_list); | |
1542 | spin_lock_init(&xcopy_lun->lun_acl_lock); | |
1543 | spin_lock_init(&xcopy_lun->lun_sep_lock); | |
1544 | init_completion(&xcopy_lun->lun_ref_comp); | |
1545 | ||
0fd97ccf CH |
1546 | return dev; |
1547 | } | |
1548 | ||
1549 | int target_configure_device(struct se_device *dev) | |
1550 | { | |
1551 | struct se_hba *hba = dev->se_hba; | |
1552 | int ret; | |
1553 | ||
1554 | if (dev->dev_flags & DF_CONFIGURED) { | |
1555 | pr_err("se_dev->se_dev_ptr already set for storage" | |
1556 | " object\n"); | |
1557 | return -EEXIST; | |
1558 | } | |
1559 | ||
1560 | ret = dev->transport->configure_device(dev); | |
1561 | if (ret) | |
1562 | goto out; | |
0fd97ccf CH |
1563 | /* |
1564 | * XXX: there is not much point to have two different values here.. | |
1565 | */ | |
1566 | dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size; | |
1567 | dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth; | |
1568 | ||
1569 | /* | |
1570 | * Align max_hw_sectors down to PAGE_SIZE I/O transfers | |
1571 | */ | |
1572 | dev->dev_attrib.hw_max_sectors = | |
1573 | se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors, | |
1574 | dev->dev_attrib.hw_block_size); | |
046ba642 | 1575 | dev->dev_attrib.optimal_sectors = dev->dev_attrib.hw_max_sectors; |
0fd97ccf CH |
1576 | |
1577 | dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX); | |
1578 | dev->creation_time = get_jiffies_64(); | |
1579 | ||
0fd97ccf CH |
1580 | ret = core_setup_alua(dev); |
1581 | if (ret) | |
1582 | goto out; | |
1583 | ||
1584 | /* | |
1585 | * Startup the struct se_device processing thread | |
1586 | */ | |
1587 | dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1, | |
1588 | dev->transport->name); | |
1589 | if (!dev->tmr_wq) { | |
1590 | pr_err("Unable to create tmr workqueue for %s\n", | |
1591 | dev->transport->name); | |
1592 | ret = -ENOMEM; | |
1593 | goto out_free_alua; | |
1594 | } | |
1595 | ||
1596 | /* | |
1597 | * Setup work_queue for QUEUE_FULL | |
1598 | */ | |
1599 | INIT_WORK(&dev->qf_work_queue, target_qf_do_work); | |
1600 | ||
1601 | /* | |
1602 | * Preload the initial INQUIRY const values if we are doing | |
1603 | * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI | |
1604 | * passthrough because this is being provided by the backend LLD. | |
1605 | */ | |
1606 | if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV) { | |
1607 | strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); | |
1608 | strncpy(&dev->t10_wwn.model[0], | |
1609 | dev->transport->inquiry_prod, 16); | |
1610 | strncpy(&dev->t10_wwn.revision[0], | |
1611 | dev->transport->inquiry_rev, 4); | |
1612 | } | |
1613 | ||
1614 | scsi_dump_inquiry(dev); | |
1615 | ||
1616 | spin_lock(&hba->device_lock); | |
1617 | hba->dev_count++; | |
1618 | spin_unlock(&hba->device_lock); | |
d9ea32bf NB |
1619 | |
1620 | mutex_lock(&g_device_mutex); | |
1621 | list_add_tail(&dev->g_dev_node, &g_device_list); | |
1622 | mutex_unlock(&g_device_mutex); | |
1623 | ||
5f7da044 NB |
1624 | dev->dev_flags |= DF_CONFIGURED; |
1625 | ||
0fd97ccf CH |
1626 | return 0; |
1627 | ||
1628 | out_free_alua: | |
1629 | core_alua_free_lu_gp_mem(dev); | |
1630 | out: | |
1631 | se_release_vpd_for_dev(dev); | |
1632 | return ret; | |
1633 | } | |
1634 | ||
1635 | void target_free_device(struct se_device *dev) | |
1636 | { | |
1637 | struct se_hba *hba = dev->se_hba; | |
1638 | ||
1639 | WARN_ON(!list_empty(&dev->dev_sep_list)); | |
1640 | ||
1641 | if (dev->dev_flags & DF_CONFIGURED) { | |
1642 | destroy_workqueue(dev->tmr_wq); | |
1643 | ||
d9ea32bf NB |
1644 | mutex_lock(&g_device_mutex); |
1645 | list_del(&dev->g_dev_node); | |
1646 | mutex_unlock(&g_device_mutex); | |
1647 | ||
0fd97ccf CH |
1648 | spin_lock(&hba->device_lock); |
1649 | hba->dev_count--; | |
1650 | spin_unlock(&hba->device_lock); | |
1651 | } | |
1652 | ||
1653 | core_alua_free_lu_gp_mem(dev); | |
229d4f11 | 1654 | core_alua_set_lba_map(dev, NULL, 0, 0); |
0fd97ccf CH |
1655 | core_scsi3_free_all_registrations(dev); |
1656 | se_release_vpd_for_dev(dev); | |
1657 | ||
2ed22c9c NB |
1658 | if (dev->transport->free_prot) |
1659 | dev->transport->free_prot(dev); | |
1660 | ||
0fd97ccf CH |
1661 | dev->transport->free_device(dev); |
1662 | } | |
1663 | ||
c66ac9db NB |
1664 | int core_dev_setup_virtual_lun0(void) |
1665 | { | |
1666 | struct se_hba *hba; | |
1667 | struct se_device *dev; | |
db5d1c3c | 1668 | char buf[] = "rd_pages=8,rd_nullio=1"; |
c66ac9db NB |
1669 | int ret; |
1670 | ||
6708bb27 | 1671 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
c66ac9db NB |
1672 | if (IS_ERR(hba)) |
1673 | return PTR_ERR(hba); | |
1674 | ||
0fd97ccf CH |
1675 | dev = target_alloc_device(hba, "virt_lun0"); |
1676 | if (!dev) { | |
c66ac9db | 1677 | ret = -ENOMEM; |
0fd97ccf | 1678 | goto out_free_hba; |
c66ac9db | 1679 | } |
c66ac9db | 1680 | |
0fd97ccf | 1681 | hba->transport->set_configfs_dev_params(dev, buf, sizeof(buf)); |
c66ac9db | 1682 | |
0fd97ccf CH |
1683 | ret = target_configure_device(dev); |
1684 | if (ret) | |
1685 | goto out_free_se_dev; | |
c66ac9db | 1686 | |
0fd97ccf CH |
1687 | lun0_hba = hba; |
1688 | g_lun0_dev = dev; | |
c66ac9db | 1689 | return 0; |
0fd97ccf CH |
1690 | |
1691 | out_free_se_dev: | |
1692 | target_free_device(dev); | |
1693 | out_free_hba: | |
1694 | core_delete_hba(hba); | |
c66ac9db NB |
1695 | return ret; |
1696 | } | |
1697 | ||
1698 | ||
1699 | void core_dev_release_virtual_lun0(void) | |
1700 | { | |
e3d6f909 | 1701 | struct se_hba *hba = lun0_hba; |
c66ac9db | 1702 | |
6708bb27 | 1703 | if (!hba) |
c66ac9db NB |
1704 | return; |
1705 | ||
e3d6f909 | 1706 | if (g_lun0_dev) |
0fd97ccf | 1707 | target_free_device(g_lun0_dev); |
c66ac9db NB |
1708 | core_delete_hba(hba); |
1709 | } |