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Commit | Line | Data |
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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 | * | |
7 | * Copyright (c) 2003, 2004, 2005 PyX Technologies, Inc. | |
8 | * Copyright (c) 2005-2006 SBE, Inc. All Rights Reserved. | |
9 | * Copyright (c) 2007-2010 Rising Tide Systems | |
10 | * Copyright (c) 2008-2010 Linux-iSCSI.org | |
11 | * | |
12 | * Nicholas A. Bellinger <nab@kernel.org> | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
27 | * | |
28 | ******************************************************************************/ | |
29 | ||
30 | #include <linux/net.h> | |
31 | #include <linux/string.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/timer.h> | |
34 | #include <linux/slab.h> | |
35 | #include <linux/spinlock.h> | |
c66ac9db NB |
36 | #include <linux/kthread.h> |
37 | #include <linux/in.h> | |
38 | #include <net/sock.h> | |
39 | #include <net/tcp.h> | |
40 | #include <scsi/scsi.h> | |
1078da16 | 41 | #include <scsi/scsi_device.h> |
c66ac9db NB |
42 | |
43 | #include <target/target_core_base.h> | |
44 | #include <target/target_core_device.h> | |
45 | #include <target/target_core_tpg.h> | |
46 | #include <target/target_core_transport.h> | |
47 | #include <target/target_core_fabric_ops.h> | |
48 | ||
49 | #include "target_core_alua.h" | |
50 | #include "target_core_hba.h" | |
51 | #include "target_core_pr.h" | |
52 | #include "target_core_ua.h" | |
53 | ||
54 | static void se_dev_start(struct se_device *dev); | |
55 | static void se_dev_stop(struct se_device *dev); | |
56 | ||
e3d6f909 AG |
57 | static struct se_hba *lun0_hba; |
58 | static struct se_subsystem_dev *lun0_su_dev; | |
59 | /* not static, needed by tpg.c */ | |
60 | struct se_device *g_lun0_dev; | |
61 | ||
c66ac9db NB |
62 | int transport_get_lun_for_cmd( |
63 | struct se_cmd *se_cmd, | |
c66ac9db NB |
64 | u32 unpacked_lun) |
65 | { | |
66 | struct se_dev_entry *deve; | |
67 | struct se_lun *se_lun = NULL; | |
e3d6f909 | 68 | struct se_session *se_sess = se_cmd->se_sess; |
c66ac9db NB |
69 | unsigned long flags; |
70 | int read_only = 0; | |
71 | ||
d8144955 FC |
72 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { |
73 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; | |
74 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 75 | return -ENODEV; |
d8144955 FC |
76 | } |
77 | ||
e3d6f909 | 78 | spin_lock_irq(&se_sess->se_node_acl->device_list_lock); |
c66ac9db | 79 | deve = se_cmd->se_deve = |
e3d6f909 | 80 | &se_sess->se_node_acl->device_list[unpacked_lun]; |
c66ac9db NB |
81 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
82 | if (se_cmd) { | |
83 | deve->total_cmds++; | |
84 | deve->total_bytes += se_cmd->data_length; | |
85 | ||
86 | if (se_cmd->data_direction == DMA_TO_DEVICE) { | |
87 | if (deve->lun_flags & | |
88 | TRANSPORT_LUNFLAGS_READ_ONLY) { | |
89 | read_only = 1; | |
90 | goto out; | |
91 | } | |
92 | deve->write_bytes += se_cmd->data_length; | |
93 | } else if (se_cmd->data_direction == | |
94 | DMA_FROM_DEVICE) { | |
95 | deve->read_bytes += se_cmd->data_length; | |
96 | } | |
97 | } | |
98 | deve->deve_cmds++; | |
99 | ||
100 | se_lun = se_cmd->se_lun = deve->se_lun; | |
101 | se_cmd->pr_res_key = deve->pr_res_key; | |
102 | se_cmd->orig_fe_lun = unpacked_lun; | |
e3d6f909 | 103 | se_cmd->se_orig_obj_ptr = se_cmd->se_lun->lun_se_dev; |
c66ac9db NB |
104 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
105 | } | |
106 | out: | |
e3d6f909 | 107 | spin_unlock_irq(&se_sess->se_node_acl->device_list_lock); |
c66ac9db NB |
108 | |
109 | if (!se_lun) { | |
110 | if (read_only) { | |
111 | se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; | |
112 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
113 | printk("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" | |
114 | " Access for 0x%08x\n", | |
e3d6f909 | 115 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 116 | unpacked_lun); |
e3d6f909 | 117 | return -EACCES; |
c66ac9db NB |
118 | } else { |
119 | /* | |
120 | * Use the se_portal_group->tpg_virt_lun0 to allow for | |
121 | * REPORT_LUNS, et al to be returned when no active | |
122 | * MappedLUN=0 exists for this Initiator Port. | |
123 | */ | |
124 | if (unpacked_lun != 0) { | |
125 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; | |
126 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
127 | printk("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" | |
128 | " Access for 0x%08x\n", | |
e3d6f909 | 129 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 130 | unpacked_lun); |
e3d6f909 | 131 | return -ENODEV; |
c66ac9db NB |
132 | } |
133 | /* | |
134 | * Force WRITE PROTECT for virtual LUN 0 | |
135 | */ | |
136 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && | |
137 | (se_cmd->data_direction != DMA_NONE)) { | |
138 | se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; | |
139 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 140 | return -EACCES; |
c66ac9db NB |
141 | } |
142 | #if 0 | |
143 | printk("TARGET_CORE[%s]: Using virtual LUN0! :-)\n", | |
e3d6f909 | 144 | se_cmd->se_tfo->get_fabric_name()); |
c66ac9db NB |
145 | #endif |
146 | se_lun = se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; | |
147 | se_cmd->orig_fe_lun = 0; | |
e3d6f909 | 148 | se_cmd->se_orig_obj_ptr = se_cmd->se_lun->lun_se_dev; |
c66ac9db NB |
149 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
150 | } | |
151 | } | |
152 | /* | |
153 | * Determine if the struct se_lun is online. | |
154 | */ | |
155 | /* #warning FIXME: Check for LUN_RESET + UNIT Attention */ | |
156 | if (se_dev_check_online(se_lun->lun_se_dev) != 0) { | |
157 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; | |
158 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 159 | return -ENODEV; |
c66ac9db NB |
160 | } |
161 | ||
162 | { | |
163 | struct se_device *dev = se_lun->lun_se_dev; | |
1e7de68c | 164 | spin_lock_irq(&dev->stats_lock); |
c66ac9db NB |
165 | dev->num_cmds++; |
166 | if (se_cmd->data_direction == DMA_TO_DEVICE) | |
167 | dev->write_bytes += se_cmd->data_length; | |
168 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) | |
169 | dev->read_bytes += se_cmd->data_length; | |
1e7de68c | 170 | spin_unlock_irq(&dev->stats_lock); |
c66ac9db NB |
171 | } |
172 | ||
173 | /* | |
174 | * Add the iscsi_cmd_t to the struct se_lun's cmd list. This list is used | |
175 | * for tracking state of struct se_cmds during LUN shutdown events. | |
176 | */ | |
177 | spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); | |
178 | list_add_tail(&se_cmd->se_lun_list, &se_lun->lun_cmd_list); | |
e3d6f909 | 179 | atomic_set(&se_cmd->t_task->transport_lun_active, 1); |
c66ac9db NB |
180 | #if 0 |
181 | printk(KERN_INFO "Adding ITT: 0x%08x to LUN LIST[%d]\n", | |
e3d6f909 | 182 | se_cmd->se_tfo->get_task_tag(se_cmd), se_lun->unpacked_lun); |
c66ac9db NB |
183 | #endif |
184 | spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); | |
185 | ||
186 | return 0; | |
187 | } | |
188 | EXPORT_SYMBOL(transport_get_lun_for_cmd); | |
189 | ||
190 | int transport_get_lun_for_tmr( | |
191 | struct se_cmd *se_cmd, | |
192 | u32 unpacked_lun) | |
193 | { | |
194 | struct se_device *dev = NULL; | |
195 | struct se_dev_entry *deve; | |
196 | struct se_lun *se_lun = NULL; | |
e3d6f909 | 197 | struct se_session *se_sess = se_cmd->se_sess; |
c66ac9db NB |
198 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
199 | ||
d8144955 FC |
200 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { |
201 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; | |
202 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 203 | return -ENODEV; |
d8144955 FC |
204 | } |
205 | ||
e3d6f909 | 206 | spin_lock_irq(&se_sess->se_node_acl->device_list_lock); |
c66ac9db | 207 | deve = se_cmd->se_deve = |
e3d6f909 | 208 | &se_sess->se_node_acl->device_list[unpacked_lun]; |
c66ac9db NB |
209 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
210 | se_lun = se_cmd->se_lun = se_tmr->tmr_lun = deve->se_lun; | |
7fd29aa9 | 211 | dev = se_lun->lun_se_dev; |
c66ac9db NB |
212 | se_cmd->pr_res_key = deve->pr_res_key; |
213 | se_cmd->orig_fe_lun = unpacked_lun; | |
e3d6f909 | 214 | se_cmd->se_orig_obj_ptr = se_cmd->se_lun->lun_se_dev; |
c66ac9db NB |
215 | /* se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; */ |
216 | } | |
e3d6f909 | 217 | spin_unlock_irq(&se_sess->se_node_acl->device_list_lock); |
c66ac9db NB |
218 | |
219 | if (!se_lun) { | |
220 | printk(KERN_INFO "TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" | |
221 | " Access for 0x%08x\n", | |
e3d6f909 | 222 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db NB |
223 | unpacked_lun); |
224 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 225 | return -ENODEV; |
c66ac9db NB |
226 | } |
227 | /* | |
228 | * Determine if the struct se_lun is online. | |
229 | */ | |
230 | /* #warning FIXME: Check for LUN_RESET + UNIT Attention */ | |
231 | if (se_dev_check_online(se_lun->lun_se_dev) != 0) { | |
232 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 233 | return -ENODEV; |
c66ac9db | 234 | } |
7fd29aa9 | 235 | se_tmr->tmr_dev = dev; |
c66ac9db NB |
236 | |
237 | spin_lock(&dev->se_tmr_lock); | |
238 | list_add_tail(&se_tmr->tmr_list, &dev->dev_tmr_list); | |
239 | spin_unlock(&dev->se_tmr_lock); | |
240 | ||
241 | return 0; | |
242 | } | |
243 | EXPORT_SYMBOL(transport_get_lun_for_tmr); | |
244 | ||
245 | /* | |
246 | * This function is called from core_scsi3_emulate_pro_register_and_move() | |
247 | * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count | |
248 | * when a matching rtpi is found. | |
249 | */ | |
250 | struct se_dev_entry *core_get_se_deve_from_rtpi( | |
251 | struct se_node_acl *nacl, | |
252 | u16 rtpi) | |
253 | { | |
254 | struct se_dev_entry *deve; | |
255 | struct se_lun *lun; | |
256 | struct se_port *port; | |
257 | struct se_portal_group *tpg = nacl->se_tpg; | |
258 | u32 i; | |
259 | ||
260 | spin_lock_irq(&nacl->device_list_lock); | |
261 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
262 | deve = &nacl->device_list[i]; | |
263 | ||
264 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) | |
265 | continue; | |
266 | ||
267 | lun = deve->se_lun; | |
268 | if (!(lun)) { | |
269 | printk(KERN_ERR "%s device entries device pointer is" | |
270 | " NULL, but Initiator has access.\n", | |
e3d6f909 | 271 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
272 | continue; |
273 | } | |
274 | port = lun->lun_sep; | |
275 | if (!(port)) { | |
276 | printk(KERN_ERR "%s device entries device pointer is" | |
277 | " NULL, but Initiator has access.\n", | |
e3d6f909 | 278 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
279 | continue; |
280 | } | |
281 | if (port->sep_rtpi != rtpi) | |
282 | continue; | |
283 | ||
284 | atomic_inc(&deve->pr_ref_count); | |
285 | smp_mb__after_atomic_inc(); | |
286 | spin_unlock_irq(&nacl->device_list_lock); | |
287 | ||
288 | return deve; | |
289 | } | |
290 | spin_unlock_irq(&nacl->device_list_lock); | |
291 | ||
292 | return NULL; | |
293 | } | |
294 | ||
295 | int core_free_device_list_for_node( | |
296 | struct se_node_acl *nacl, | |
297 | struct se_portal_group *tpg) | |
298 | { | |
299 | struct se_dev_entry *deve; | |
300 | struct se_lun *lun; | |
301 | u32 i; | |
302 | ||
303 | if (!nacl->device_list) | |
304 | return 0; | |
305 | ||
306 | spin_lock_irq(&nacl->device_list_lock); | |
307 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
308 | deve = &nacl->device_list[i]; | |
309 | ||
310 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) | |
311 | continue; | |
312 | ||
313 | if (!deve->se_lun) { | |
314 | printk(KERN_ERR "%s device entries device pointer is" | |
315 | " NULL, but Initiator has access.\n", | |
e3d6f909 | 316 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
317 | continue; |
318 | } | |
319 | lun = deve->se_lun; | |
320 | ||
321 | spin_unlock_irq(&nacl->device_list_lock); | |
322 | core_update_device_list_for_node(lun, NULL, deve->mapped_lun, | |
323 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); | |
324 | spin_lock_irq(&nacl->device_list_lock); | |
325 | } | |
326 | spin_unlock_irq(&nacl->device_list_lock); | |
327 | ||
328 | kfree(nacl->device_list); | |
329 | nacl->device_list = NULL; | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
334 | void core_dec_lacl_count(struct se_node_acl *se_nacl, struct se_cmd *se_cmd) | |
335 | { | |
336 | struct se_dev_entry *deve; | |
337 | ||
338 | spin_lock_irq(&se_nacl->device_list_lock); | |
339 | deve = &se_nacl->device_list[se_cmd->orig_fe_lun]; | |
340 | deve->deve_cmds--; | |
341 | spin_unlock_irq(&se_nacl->device_list_lock); | |
c66ac9db NB |
342 | } |
343 | ||
344 | void core_update_device_list_access( | |
345 | u32 mapped_lun, | |
346 | u32 lun_access, | |
347 | struct se_node_acl *nacl) | |
348 | { | |
349 | struct se_dev_entry *deve; | |
350 | ||
351 | spin_lock_irq(&nacl->device_list_lock); | |
352 | deve = &nacl->device_list[mapped_lun]; | |
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; | |
359 | } | |
360 | spin_unlock_irq(&nacl->device_list_lock); | |
c66ac9db NB |
361 | } |
362 | ||
363 | /* core_update_device_list_for_node(): | |
364 | * | |
365 | * | |
366 | */ | |
367 | int core_update_device_list_for_node( | |
368 | struct se_lun *lun, | |
369 | struct se_lun_acl *lun_acl, | |
370 | u32 mapped_lun, | |
371 | u32 lun_access, | |
372 | struct se_node_acl *nacl, | |
373 | struct se_portal_group *tpg, | |
374 | int enable) | |
375 | { | |
376 | struct se_port *port = lun->lun_sep; | |
377 | struct se_dev_entry *deve = &nacl->device_list[mapped_lun]; | |
378 | int trans = 0; | |
379 | /* | |
380 | * If the MappedLUN entry is being disabled, the entry in | |
381 | * port->sep_alua_list must be removed now before clearing the | |
382 | * struct se_dev_entry pointers below as logic in | |
383 | * core_alua_do_transition_tg_pt() depends on these being present. | |
384 | */ | |
385 | if (!(enable)) { | |
386 | /* | |
387 | * deve->se_lun_acl will be NULL for demo-mode created LUNs | |
25985edc | 388 | * that have not been explicitly concerted to MappedLUNs -> |
29fe609d NB |
389 | * struct se_lun_acl, but we remove deve->alua_port_list from |
390 | * port->sep_alua_list. This also means that active UAs and | |
391 | * NodeACL context specific PR metadata for demo-mode | |
392 | * MappedLUN *deve will be released below.. | |
c66ac9db | 393 | */ |
c66ac9db NB |
394 | spin_lock_bh(&port->sep_alua_lock); |
395 | list_del(&deve->alua_port_list); | |
396 | spin_unlock_bh(&port->sep_alua_lock); | |
397 | } | |
398 | ||
399 | spin_lock_irq(&nacl->device_list_lock); | |
400 | if (enable) { | |
401 | /* | |
402 | * Check if the call is handling demo mode -> explict LUN ACL | |
403 | * transition. This transition must be for the same struct se_lun | |
404 | * + mapped_lun that was setup in demo mode.. | |
405 | */ | |
406 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { | |
407 | if (deve->se_lun_acl != NULL) { | |
408 | printk(KERN_ERR "struct se_dev_entry->se_lun_acl" | |
409 | " already set for demo mode -> explict" | |
410 | " LUN ACL transition\n"); | |
85dc98d9 | 411 | spin_unlock_irq(&nacl->device_list_lock); |
e3d6f909 | 412 | return -EINVAL; |
c66ac9db NB |
413 | } |
414 | if (deve->se_lun != lun) { | |
415 | printk(KERN_ERR "struct se_dev_entry->se_lun does" | |
416 | " match passed struct se_lun for demo mode" | |
417 | " -> explict LUN ACL transition\n"); | |
85dc98d9 | 418 | spin_unlock_irq(&nacl->device_list_lock); |
e3d6f909 | 419 | return -EINVAL; |
c66ac9db NB |
420 | } |
421 | deve->se_lun_acl = lun_acl; | |
422 | trans = 1; | |
423 | } else { | |
424 | deve->se_lun = lun; | |
425 | deve->se_lun_acl = lun_acl; | |
426 | deve->mapped_lun = mapped_lun; | |
427 | deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; | |
428 | } | |
429 | ||
430 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { | |
431 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
432 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
433 | } else { | |
434 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
435 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
436 | } | |
437 | ||
438 | if (trans) { | |
439 | spin_unlock_irq(&nacl->device_list_lock); | |
440 | return 0; | |
441 | } | |
442 | deve->creation_time = get_jiffies_64(); | |
443 | deve->attach_count++; | |
444 | spin_unlock_irq(&nacl->device_list_lock); | |
445 | ||
446 | spin_lock_bh(&port->sep_alua_lock); | |
447 | list_add_tail(&deve->alua_port_list, &port->sep_alua_list); | |
448 | spin_unlock_bh(&port->sep_alua_lock); | |
449 | ||
450 | return 0; | |
451 | } | |
452 | /* | |
453 | * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE | |
454 | * PR operation to complete. | |
455 | */ | |
456 | spin_unlock_irq(&nacl->device_list_lock); | |
457 | while (atomic_read(&deve->pr_ref_count) != 0) | |
458 | cpu_relax(); | |
459 | spin_lock_irq(&nacl->device_list_lock); | |
460 | /* | |
461 | * Disable struct se_dev_entry LUN ACL mapping | |
462 | */ | |
463 | core_scsi3_ua_release_all(deve); | |
464 | deve->se_lun = NULL; | |
465 | deve->se_lun_acl = NULL; | |
466 | deve->lun_flags = 0; | |
467 | deve->creation_time = 0; | |
468 | deve->attach_count--; | |
469 | spin_unlock_irq(&nacl->device_list_lock); | |
470 | ||
471 | core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl); | |
472 | return 0; | |
473 | } | |
474 | ||
475 | /* core_clear_lun_from_tpg(): | |
476 | * | |
477 | * | |
478 | */ | |
479 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) | |
480 | { | |
481 | struct se_node_acl *nacl; | |
482 | struct se_dev_entry *deve; | |
483 | u32 i; | |
484 | ||
485 | spin_lock_bh(&tpg->acl_node_lock); | |
486 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { | |
487 | spin_unlock_bh(&tpg->acl_node_lock); | |
488 | ||
489 | spin_lock_irq(&nacl->device_list_lock); | |
490 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
491 | deve = &nacl->device_list[i]; | |
492 | if (lun != deve->se_lun) | |
493 | continue; | |
494 | spin_unlock_irq(&nacl->device_list_lock); | |
495 | ||
496 | core_update_device_list_for_node(lun, NULL, | |
497 | deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, | |
498 | nacl, tpg, 0); | |
499 | ||
500 | spin_lock_irq(&nacl->device_list_lock); | |
501 | } | |
502 | spin_unlock_irq(&nacl->device_list_lock); | |
503 | ||
504 | spin_lock_bh(&tpg->acl_node_lock); | |
505 | } | |
506 | spin_unlock_bh(&tpg->acl_node_lock); | |
c66ac9db NB |
507 | } |
508 | ||
509 | static struct se_port *core_alloc_port(struct se_device *dev) | |
510 | { | |
511 | struct se_port *port, *port_tmp; | |
512 | ||
513 | port = kzalloc(sizeof(struct se_port), GFP_KERNEL); | |
514 | if (!(port)) { | |
515 | printk(KERN_ERR "Unable to allocate struct se_port\n"); | |
e3d6f909 | 516 | return ERR_PTR(-ENOMEM); |
c66ac9db NB |
517 | } |
518 | INIT_LIST_HEAD(&port->sep_alua_list); | |
519 | INIT_LIST_HEAD(&port->sep_list); | |
520 | atomic_set(&port->sep_tg_pt_secondary_offline, 0); | |
521 | spin_lock_init(&port->sep_alua_lock); | |
522 | mutex_init(&port->sep_tg_pt_md_mutex); | |
523 | ||
524 | spin_lock(&dev->se_port_lock); | |
525 | if (dev->dev_port_count == 0x0000ffff) { | |
526 | printk(KERN_WARNING "Reached dev->dev_port_count ==" | |
527 | " 0x0000ffff\n"); | |
528 | spin_unlock(&dev->se_port_lock); | |
e3d6f909 | 529 | return ERR_PTR(-ENOSPC); |
c66ac9db NB |
530 | } |
531 | again: | |
532 | /* | |
533 | * Allocate the next RELATIVE TARGET PORT IDENTIFER for this struct se_device | |
534 | * Here is the table from spc4r17 section 7.7.3.8. | |
535 | * | |
536 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field | |
537 | * | |
538 | * Code Description | |
539 | * 0h Reserved | |
540 | * 1h Relative port 1, historically known as port A | |
541 | * 2h Relative port 2, historically known as port B | |
542 | * 3h to FFFFh Relative port 3 through 65 535 | |
543 | */ | |
544 | port->sep_rtpi = dev->dev_rpti_counter++; | |
545 | if (!(port->sep_rtpi)) | |
546 | goto again; | |
547 | ||
548 | list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { | |
549 | /* | |
550 | * Make sure RELATIVE TARGET PORT IDENTIFER is unique | |
551 | * for 16-bit wrap.. | |
552 | */ | |
553 | if (port->sep_rtpi == port_tmp->sep_rtpi) | |
554 | goto again; | |
555 | } | |
556 | spin_unlock(&dev->se_port_lock); | |
557 | ||
558 | return port; | |
559 | } | |
560 | ||
561 | static void core_export_port( | |
562 | struct se_device *dev, | |
563 | struct se_portal_group *tpg, | |
564 | struct se_port *port, | |
565 | struct se_lun *lun) | |
566 | { | |
e3d6f909 | 567 | struct se_subsystem_dev *su_dev = dev->se_sub_dev; |
c66ac9db NB |
568 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; |
569 | ||
570 | spin_lock(&dev->se_port_lock); | |
571 | spin_lock(&lun->lun_sep_lock); | |
572 | port->sep_tpg = tpg; | |
573 | port->sep_lun = lun; | |
574 | lun->lun_sep = port; | |
575 | spin_unlock(&lun->lun_sep_lock); | |
576 | ||
577 | list_add_tail(&port->sep_list, &dev->dev_sep_list); | |
578 | spin_unlock(&dev->se_port_lock); | |
579 | ||
e3d6f909 | 580 | if (su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) { |
c66ac9db NB |
581 | tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); |
582 | if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { | |
583 | printk(KERN_ERR "Unable to allocate t10_alua_tg_pt" | |
584 | "_gp_member_t\n"); | |
585 | return; | |
586 | } | |
587 | spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); | |
588 | __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, | |
e3d6f909 | 589 | su_dev->t10_alua.default_tg_pt_gp); |
c66ac9db NB |
590 | spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); |
591 | printk(KERN_INFO "%s/%s: Adding to default ALUA Target Port" | |
592 | " Group: alua/default_tg_pt_gp\n", | |
e3d6f909 | 593 | dev->transport->name, tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
594 | } |
595 | ||
596 | dev->dev_port_count++; | |
597 | port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFER */ | |
598 | } | |
599 | ||
600 | /* | |
601 | * Called with struct se_device->se_port_lock spinlock held. | |
602 | */ | |
603 | static void core_release_port(struct se_device *dev, struct se_port *port) | |
5dd7ed2e | 604 | __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock) |
c66ac9db NB |
605 | { |
606 | /* | |
607 | * Wait for any port reference for PR ALL_TG_PT=1 operation | |
608 | * to complete in __core_scsi3_alloc_registration() | |
609 | */ | |
610 | spin_unlock(&dev->se_port_lock); | |
611 | if (atomic_read(&port->sep_tg_pt_ref_cnt)) | |
612 | cpu_relax(); | |
613 | spin_lock(&dev->se_port_lock); | |
614 | ||
615 | core_alua_free_tg_pt_gp_mem(port); | |
616 | ||
617 | list_del(&port->sep_list); | |
618 | dev->dev_port_count--; | |
619 | kfree(port); | |
c66ac9db NB |
620 | } |
621 | ||
622 | int core_dev_export( | |
623 | struct se_device *dev, | |
624 | struct se_portal_group *tpg, | |
625 | struct se_lun *lun) | |
626 | { | |
627 | struct se_port *port; | |
628 | ||
629 | port = core_alloc_port(dev); | |
e3d6f909 AG |
630 | if (IS_ERR(port)) |
631 | return PTR_ERR(port); | |
c66ac9db NB |
632 | |
633 | lun->lun_se_dev = dev; | |
634 | se_dev_start(dev); | |
635 | ||
636 | atomic_inc(&dev->dev_export_obj.obj_access_count); | |
637 | core_export_port(dev, tpg, port, lun); | |
638 | return 0; | |
639 | } | |
640 | ||
641 | void core_dev_unexport( | |
642 | struct se_device *dev, | |
643 | struct se_portal_group *tpg, | |
644 | struct se_lun *lun) | |
645 | { | |
646 | struct se_port *port = lun->lun_sep; | |
647 | ||
648 | spin_lock(&lun->lun_sep_lock); | |
649 | if (lun->lun_se_dev == NULL) { | |
650 | spin_unlock(&lun->lun_sep_lock); | |
651 | return; | |
652 | } | |
653 | spin_unlock(&lun->lun_sep_lock); | |
654 | ||
655 | spin_lock(&dev->se_port_lock); | |
656 | atomic_dec(&dev->dev_export_obj.obj_access_count); | |
657 | core_release_port(dev, port); | |
658 | spin_unlock(&dev->se_port_lock); | |
659 | ||
660 | se_dev_stop(dev); | |
661 | lun->lun_se_dev = NULL; | |
662 | } | |
663 | ||
664 | int transport_core_report_lun_response(struct se_cmd *se_cmd) | |
665 | { | |
666 | struct se_dev_entry *deve; | |
667 | struct se_lun *se_lun; | |
e3d6f909 | 668 | struct se_session *se_sess = se_cmd->se_sess; |
c66ac9db | 669 | struct se_task *se_task; |
e3d6f909 | 670 | unsigned char *buf = se_cmd->t_task->t_task_buf; |
1078da16 | 671 | u32 cdb_offset = 0, lun_count = 0, offset = 8, i; |
c66ac9db | 672 | |
e3d6f909 | 673 | list_for_each_entry(se_task, &se_cmd->t_task->t_task_list, t_list) |
c66ac9db NB |
674 | break; |
675 | ||
676 | if (!(se_task)) { | |
677 | printk(KERN_ERR "Unable to locate struct se_task for struct se_cmd\n"); | |
678 | return PYX_TRANSPORT_LU_COMM_FAILURE; | |
679 | } | |
680 | ||
681 | /* | |
682 | * If no struct se_session pointer is present, this struct se_cmd is | |
683 | * coming via a target_core_mod PASSTHROUGH op, and not through | |
684 | * a $FABRIC_MOD. In that case, report LUN=0 only. | |
685 | */ | |
686 | if (!(se_sess)) { | |
1078da16 | 687 | int_to_scsilun(0, (struct scsi_lun *)&buf[offset]); |
c66ac9db NB |
688 | lun_count = 1; |
689 | goto done; | |
690 | } | |
691 | ||
e3d6f909 | 692 | spin_lock_irq(&se_sess->se_node_acl->device_list_lock); |
c66ac9db | 693 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
e3d6f909 | 694 | deve = &se_sess->se_node_acl->device_list[i]; |
c66ac9db NB |
695 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
696 | continue; | |
697 | se_lun = deve->se_lun; | |
698 | /* | |
699 | * We determine the correct LUN LIST LENGTH even once we | |
700 | * have reached the initial allocation length. | |
701 | * See SPC2-R20 7.19. | |
702 | */ | |
703 | lun_count++; | |
704 | if ((cdb_offset + 8) >= se_cmd->data_length) | |
705 | continue; | |
706 | ||
1078da16 NB |
707 | int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]); |
708 | offset += 8; | |
c66ac9db NB |
709 | cdb_offset += 8; |
710 | } | |
e3d6f909 | 711 | spin_unlock_irq(&se_sess->se_node_acl->device_list_lock); |
c66ac9db NB |
712 | |
713 | /* | |
714 | * See SPC3 r07, page 159. | |
715 | */ | |
716 | done: | |
717 | lun_count *= 8; | |
718 | buf[0] = ((lun_count >> 24) & 0xff); | |
719 | buf[1] = ((lun_count >> 16) & 0xff); | |
720 | buf[2] = ((lun_count >> 8) & 0xff); | |
721 | buf[3] = (lun_count & 0xff); | |
722 | ||
723 | return PYX_TRANSPORT_SENT_TO_TRANSPORT; | |
724 | } | |
725 | ||
726 | /* se_release_device_for_hba(): | |
727 | * | |
728 | * | |
729 | */ | |
730 | void se_release_device_for_hba(struct se_device *dev) | |
731 | { | |
732 | struct se_hba *hba = dev->se_hba; | |
733 | ||
734 | if ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || | |
735 | (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) || | |
736 | (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN) || | |
737 | (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_ACTIVATED) || | |
738 | (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_DEACTIVATED)) | |
739 | se_dev_stop(dev); | |
740 | ||
741 | if (dev->dev_ptr) { | |
742 | kthread_stop(dev->process_thread); | |
743 | if (dev->transport->free_device) | |
744 | dev->transport->free_device(dev->dev_ptr); | |
745 | } | |
746 | ||
747 | spin_lock(&hba->device_lock); | |
748 | list_del(&dev->dev_list); | |
749 | hba->dev_count--; | |
750 | spin_unlock(&hba->device_lock); | |
751 | ||
752 | core_scsi3_free_all_registrations(dev); | |
753 | se_release_vpd_for_dev(dev); | |
754 | ||
c66ac9db | 755 | kfree(dev); |
c66ac9db NB |
756 | } |
757 | ||
758 | void se_release_vpd_for_dev(struct se_device *dev) | |
759 | { | |
760 | struct t10_vpd *vpd, *vpd_tmp; | |
761 | ||
e3d6f909 | 762 | spin_lock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); |
c66ac9db | 763 | list_for_each_entry_safe(vpd, vpd_tmp, |
e3d6f909 | 764 | &dev->se_sub_dev->t10_wwn.t10_vpd_list, vpd_list) { |
c66ac9db NB |
765 | list_del(&vpd->vpd_list); |
766 | kfree(vpd); | |
767 | } | |
e3d6f909 | 768 | spin_unlock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); |
c66ac9db NB |
769 | } |
770 | ||
c66ac9db NB |
771 | /* se_free_virtual_device(): |
772 | * | |
773 | * Used for IBLOCK, RAMDISK, and FILEIO Transport Drivers. | |
774 | */ | |
775 | int se_free_virtual_device(struct se_device *dev, struct se_hba *hba) | |
776 | { | |
05aea6e7 FC |
777 | if (!list_empty(&dev->dev_sep_list)) |
778 | dump_stack(); | |
c66ac9db NB |
779 | |
780 | core_alua_free_lu_gp_mem(dev); | |
781 | se_release_device_for_hba(dev); | |
782 | ||
783 | return 0; | |
784 | } | |
785 | ||
786 | static void se_dev_start(struct se_device *dev) | |
787 | { | |
788 | struct se_hba *hba = dev->se_hba; | |
789 | ||
790 | spin_lock(&hba->device_lock); | |
791 | atomic_inc(&dev->dev_obj.obj_access_count); | |
792 | if (atomic_read(&dev->dev_obj.obj_access_count) == 1) { | |
793 | if (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) { | |
794 | dev->dev_status &= ~TRANSPORT_DEVICE_DEACTIVATED; | |
795 | dev->dev_status |= TRANSPORT_DEVICE_ACTIVATED; | |
796 | } else if (dev->dev_status & | |
797 | TRANSPORT_DEVICE_OFFLINE_DEACTIVATED) { | |
798 | dev->dev_status &= | |
799 | ~TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; | |
800 | dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_ACTIVATED; | |
801 | } | |
802 | } | |
803 | spin_unlock(&hba->device_lock); | |
804 | } | |
805 | ||
806 | static void se_dev_stop(struct se_device *dev) | |
807 | { | |
808 | struct se_hba *hba = dev->se_hba; | |
809 | ||
810 | spin_lock(&hba->device_lock); | |
811 | atomic_dec(&dev->dev_obj.obj_access_count); | |
812 | if (atomic_read(&dev->dev_obj.obj_access_count) == 0) { | |
813 | if (dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) { | |
814 | dev->dev_status &= ~TRANSPORT_DEVICE_ACTIVATED; | |
815 | dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED; | |
816 | } else if (dev->dev_status & | |
817 | TRANSPORT_DEVICE_OFFLINE_ACTIVATED) { | |
818 | dev->dev_status &= ~TRANSPORT_DEVICE_OFFLINE_ACTIVATED; | |
819 | dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; | |
820 | } | |
821 | } | |
822 | spin_unlock(&hba->device_lock); | |
c66ac9db NB |
823 | } |
824 | ||
825 | int se_dev_check_online(struct se_device *dev) | |
826 | { | |
827 | int ret; | |
828 | ||
829 | spin_lock_irq(&dev->dev_status_lock); | |
830 | ret = ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || | |
831 | (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED)) ? 0 : 1; | |
832 | spin_unlock_irq(&dev->dev_status_lock); | |
833 | ||
834 | return ret; | |
835 | } | |
836 | ||
837 | int se_dev_check_shutdown(struct se_device *dev) | |
838 | { | |
839 | int ret; | |
840 | ||
841 | spin_lock_irq(&dev->dev_status_lock); | |
842 | ret = (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN); | |
843 | spin_unlock_irq(&dev->dev_status_lock); | |
844 | ||
845 | return ret; | |
846 | } | |
847 | ||
848 | void se_dev_set_default_attribs( | |
849 | struct se_device *dev, | |
850 | struct se_dev_limits *dev_limits) | |
851 | { | |
852 | struct queue_limits *limits = &dev_limits->limits; | |
853 | ||
e3d6f909 AG |
854 | dev->se_sub_dev->se_dev_attrib.emulate_dpo = DA_EMULATE_DPO; |
855 | dev->se_sub_dev->se_dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE; | |
856 | dev->se_sub_dev->se_dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ; | |
857 | dev->se_sub_dev->se_dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; | |
858 | dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; | |
859 | dev->se_sub_dev->se_dev_attrib.emulate_tas = DA_EMULATE_TAS; | |
860 | dev->se_sub_dev->se_dev_attrib.emulate_tpu = DA_EMULATE_TPU; | |
861 | dev->se_sub_dev->se_dev_attrib.emulate_tpws = DA_EMULATE_TPWS; | |
862 | dev->se_sub_dev->se_dev_attrib.emulate_reservations = DA_EMULATE_RESERVATIONS; | |
863 | dev->se_sub_dev->se_dev_attrib.emulate_alua = DA_EMULATE_ALUA; | |
864 | dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; | |
c66ac9db NB |
865 | /* |
866 | * The TPU=1 and TPWS=1 settings will be set in TCM/IBLOCK | |
867 | * iblock_create_virtdevice() from struct queue_limits values | |
868 | * if blk_queue_discard()==1 | |
869 | */ | |
e3d6f909 AG |
870 | dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; |
871 | dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = | |
872 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; | |
873 | dev->se_sub_dev->se_dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; | |
874 | dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = | |
c66ac9db NB |
875 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; |
876 | /* | |
877 | * block_size is based on subsystem plugin dependent requirements. | |
878 | */ | |
e3d6f909 AG |
879 | dev->se_sub_dev->se_dev_attrib.hw_block_size = limits->logical_block_size; |
880 | dev->se_sub_dev->se_dev_attrib.block_size = limits->logical_block_size; | |
c66ac9db NB |
881 | /* |
882 | * max_sectors is based on subsystem plugin dependent requirements. | |
883 | */ | |
e3d6f909 AG |
884 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors = limits->max_hw_sectors; |
885 | dev->se_sub_dev->se_dev_attrib.max_sectors = limits->max_sectors; | |
c66ac9db NB |
886 | /* |
887 | * Set optimal_sectors from max_sectors, which can be lowered via | |
888 | * configfs. | |
889 | */ | |
e3d6f909 | 890 | dev->se_sub_dev->se_dev_attrib.optimal_sectors = limits->max_sectors; |
c66ac9db NB |
891 | /* |
892 | * queue_depth is based on subsystem plugin dependent requirements. | |
893 | */ | |
e3d6f909 AG |
894 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth = dev_limits->hw_queue_depth; |
895 | dev->se_sub_dev->se_dev_attrib.queue_depth = dev_limits->queue_depth; | |
c66ac9db NB |
896 | } |
897 | ||
898 | int se_dev_set_task_timeout(struct se_device *dev, u32 task_timeout) | |
899 | { | |
900 | if (task_timeout > DA_TASK_TIMEOUT_MAX) { | |
901 | printk(KERN_ERR "dev[%p]: Passed task_timeout: %u larger then" | |
902 | " DA_TASK_TIMEOUT_MAX\n", dev, task_timeout); | |
e3d6f909 | 903 | return -EINVAL; |
c66ac9db | 904 | } else { |
e3d6f909 | 905 | dev->se_sub_dev->se_dev_attrib.task_timeout = task_timeout; |
c66ac9db NB |
906 | printk(KERN_INFO "dev[%p]: Set SE Device task_timeout: %u\n", |
907 | dev, task_timeout); | |
908 | } | |
909 | ||
910 | return 0; | |
911 | } | |
912 | ||
913 | int se_dev_set_max_unmap_lba_count( | |
914 | struct se_device *dev, | |
915 | u32 max_unmap_lba_count) | |
916 | { | |
e3d6f909 | 917 | dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = max_unmap_lba_count; |
c66ac9db | 918 | printk(KERN_INFO "dev[%p]: Set max_unmap_lba_count: %u\n", |
e3d6f909 | 919 | dev, dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count); |
c66ac9db NB |
920 | return 0; |
921 | } | |
922 | ||
923 | int se_dev_set_max_unmap_block_desc_count( | |
924 | struct se_device *dev, | |
925 | u32 max_unmap_block_desc_count) | |
926 | { | |
e3d6f909 AG |
927 | dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = |
928 | max_unmap_block_desc_count; | |
c66ac9db | 929 | printk(KERN_INFO "dev[%p]: Set max_unmap_block_desc_count: %u\n", |
e3d6f909 | 930 | dev, dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count); |
c66ac9db NB |
931 | return 0; |
932 | } | |
933 | ||
934 | int se_dev_set_unmap_granularity( | |
935 | struct se_device *dev, | |
936 | u32 unmap_granularity) | |
937 | { | |
e3d6f909 | 938 | dev->se_sub_dev->se_dev_attrib.unmap_granularity = unmap_granularity; |
c66ac9db | 939 | printk(KERN_INFO "dev[%p]: Set unmap_granularity: %u\n", |
e3d6f909 | 940 | dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity); |
c66ac9db NB |
941 | return 0; |
942 | } | |
943 | ||
944 | int se_dev_set_unmap_granularity_alignment( | |
945 | struct se_device *dev, | |
946 | u32 unmap_granularity_alignment) | |
947 | { | |
e3d6f909 | 948 | dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment; |
c66ac9db | 949 | printk(KERN_INFO "dev[%p]: Set unmap_granularity_alignment: %u\n", |
e3d6f909 | 950 | dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment); |
c66ac9db NB |
951 | return 0; |
952 | } | |
953 | ||
954 | int se_dev_set_emulate_dpo(struct se_device *dev, int flag) | |
955 | { | |
956 | if ((flag != 0) && (flag != 1)) { | |
957 | printk(KERN_ERR "Illegal value %d\n", flag); | |
e3d6f909 | 958 | return -EINVAL; |
c66ac9db | 959 | } |
e3d6f909 AG |
960 | if (dev->transport->dpo_emulated == NULL) { |
961 | printk(KERN_ERR "dev->transport->dpo_emulated is NULL\n"); | |
962 | return -EINVAL; | |
c66ac9db | 963 | } |
e3d6f909 AG |
964 | if (dev->transport->dpo_emulated(dev) == 0) { |
965 | printk(KERN_ERR "dev->transport->dpo_emulated not supported\n"); | |
966 | return -EINVAL; | |
c66ac9db | 967 | } |
e3d6f909 | 968 | dev->se_sub_dev->se_dev_attrib.emulate_dpo = flag; |
c66ac9db | 969 | printk(KERN_INFO "dev[%p]: SE Device Page Out (DPO) Emulation" |
e3d6f909 | 970 | " bit: %d\n", dev, dev->se_sub_dev->se_dev_attrib.emulate_dpo); |
c66ac9db NB |
971 | return 0; |
972 | } | |
973 | ||
974 | int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) | |
975 | { | |
976 | if ((flag != 0) && (flag != 1)) { | |
977 | printk(KERN_ERR "Illegal value %d\n", flag); | |
e3d6f909 | 978 | return -EINVAL; |
c66ac9db | 979 | } |
e3d6f909 AG |
980 | if (dev->transport->fua_write_emulated == NULL) { |
981 | printk(KERN_ERR "dev->transport->fua_write_emulated is NULL\n"); | |
982 | return -EINVAL; | |
c66ac9db | 983 | } |
e3d6f909 AG |
984 | if (dev->transport->fua_write_emulated(dev) == 0) { |
985 | printk(KERN_ERR "dev->transport->fua_write_emulated not supported\n"); | |
986 | return -EINVAL; | |
c66ac9db | 987 | } |
e3d6f909 | 988 | dev->se_sub_dev->se_dev_attrib.emulate_fua_write = flag; |
c66ac9db | 989 | printk(KERN_INFO "dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", |
e3d6f909 | 990 | dev, dev->se_sub_dev->se_dev_attrib.emulate_fua_write); |
c66ac9db NB |
991 | return 0; |
992 | } | |
993 | ||
994 | int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) | |
995 | { | |
996 | if ((flag != 0) && (flag != 1)) { | |
997 | printk(KERN_ERR "Illegal value %d\n", flag); | |
e3d6f909 | 998 | return -EINVAL; |
c66ac9db | 999 | } |
e3d6f909 AG |
1000 | if (dev->transport->fua_read_emulated == NULL) { |
1001 | printk(KERN_ERR "dev->transport->fua_read_emulated is NULL\n"); | |
1002 | return -EINVAL; | |
c66ac9db | 1003 | } |
e3d6f909 AG |
1004 | if (dev->transport->fua_read_emulated(dev) == 0) { |
1005 | printk(KERN_ERR "dev->transport->fua_read_emulated not supported\n"); | |
1006 | return -EINVAL; | |
c66ac9db | 1007 | } |
e3d6f909 | 1008 | dev->se_sub_dev->se_dev_attrib.emulate_fua_read = flag; |
c66ac9db | 1009 | printk(KERN_INFO "dev[%p]: SE Device Forced Unit Access READs: %d\n", |
e3d6f909 | 1010 | dev, dev->se_sub_dev->se_dev_attrib.emulate_fua_read); |
c66ac9db NB |
1011 | return 0; |
1012 | } | |
1013 | ||
1014 | int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) | |
1015 | { | |
1016 | if ((flag != 0) && (flag != 1)) { | |
1017 | printk(KERN_ERR "Illegal value %d\n", flag); | |
e3d6f909 | 1018 | return -EINVAL; |
c66ac9db | 1019 | } |
e3d6f909 AG |
1020 | if (dev->transport->write_cache_emulated == NULL) { |
1021 | printk(KERN_ERR "dev->transport->write_cache_emulated is NULL\n"); | |
1022 | return -EINVAL; | |
c66ac9db | 1023 | } |
e3d6f909 AG |
1024 | if (dev->transport->write_cache_emulated(dev) == 0) { |
1025 | printk(KERN_ERR "dev->transport->write_cache_emulated not supported\n"); | |
1026 | return -EINVAL; | |
c66ac9db | 1027 | } |
e3d6f909 | 1028 | dev->se_sub_dev->se_dev_attrib.emulate_write_cache = flag; |
c66ac9db | 1029 | printk(KERN_INFO "dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", |
e3d6f909 | 1030 | dev, dev->se_sub_dev->se_dev_attrib.emulate_write_cache); |
c66ac9db NB |
1031 | return 0; |
1032 | } | |
1033 | ||
1034 | int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) | |
1035 | { | |
1036 | if ((flag != 0) && (flag != 1) && (flag != 2)) { | |
1037 | printk(KERN_ERR "Illegal value %d\n", flag); | |
e3d6f909 | 1038 | return -EINVAL; |
c66ac9db NB |
1039 | } |
1040 | ||
1041 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
1042 | printk(KERN_ERR "dev[%p]: Unable to change SE Device" | |
1043 | " UA_INTRLCK_CTRL while dev_export_obj: %d count" | |
1044 | " exists\n", dev, | |
1045 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1046 | return -EINVAL; |
c66ac9db | 1047 | } |
e3d6f909 | 1048 | dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = flag; |
c66ac9db | 1049 | printk(KERN_INFO "dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", |
e3d6f909 | 1050 | dev, dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl); |
c66ac9db NB |
1051 | |
1052 | return 0; | |
1053 | } | |
1054 | ||
1055 | int se_dev_set_emulate_tas(struct se_device *dev, int flag) | |
1056 | { | |
1057 | if ((flag != 0) && (flag != 1)) { | |
1058 | printk(KERN_ERR "Illegal value %d\n", flag); | |
e3d6f909 | 1059 | return -EINVAL; |
c66ac9db NB |
1060 | } |
1061 | ||
1062 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
1063 | printk(KERN_ERR "dev[%p]: Unable to change SE Device TAS while" | |
1064 | " dev_export_obj: %d count exists\n", dev, | |
1065 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1066 | return -EINVAL; |
c66ac9db | 1067 | } |
e3d6f909 | 1068 | dev->se_sub_dev->se_dev_attrib.emulate_tas = flag; |
c66ac9db | 1069 | printk(KERN_INFO "dev[%p]: SE Device TASK_ABORTED status bit: %s\n", |
e3d6f909 | 1070 | dev, (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? "Enabled" : "Disabled"); |
c66ac9db NB |
1071 | |
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | int se_dev_set_emulate_tpu(struct se_device *dev, int flag) | |
1076 | { | |
1077 | if ((flag != 0) && (flag != 1)) { | |
1078 | printk(KERN_ERR "Illegal value %d\n", flag); | |
e3d6f909 | 1079 | return -EINVAL; |
c66ac9db NB |
1080 | } |
1081 | /* | |
1082 | * We expect this value to be non-zero when generic Block Layer | |
1083 | * Discard supported is detected iblock_create_virtdevice(). | |
1084 | */ | |
e3d6f909 | 1085 | if (!(dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count)) { |
c66ac9db NB |
1086 | printk(KERN_ERR "Generic Block Discard not supported\n"); |
1087 | return -ENOSYS; | |
1088 | } | |
1089 | ||
e3d6f909 | 1090 | dev->se_sub_dev->se_dev_attrib.emulate_tpu = flag; |
c66ac9db NB |
1091 | printk(KERN_INFO "dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", |
1092 | dev, flag); | |
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | int se_dev_set_emulate_tpws(struct se_device *dev, int flag) | |
1097 | { | |
1098 | if ((flag != 0) && (flag != 1)) { | |
1099 | printk(KERN_ERR "Illegal value %d\n", flag); | |
e3d6f909 | 1100 | return -EINVAL; |
c66ac9db NB |
1101 | } |
1102 | /* | |
1103 | * We expect this value to be non-zero when generic Block Layer | |
1104 | * Discard supported is detected iblock_create_virtdevice(). | |
1105 | */ | |
e3d6f909 | 1106 | if (!(dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count)) { |
c66ac9db NB |
1107 | printk(KERN_ERR "Generic Block Discard not supported\n"); |
1108 | return -ENOSYS; | |
1109 | } | |
1110 | ||
e3d6f909 | 1111 | dev->se_sub_dev->se_dev_attrib.emulate_tpws = flag; |
c66ac9db NB |
1112 | printk(KERN_INFO "dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", |
1113 | dev, flag); | |
1114 | return 0; | |
1115 | } | |
1116 | ||
1117 | int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) | |
1118 | { | |
1119 | if ((flag != 0) && (flag != 1)) { | |
1120 | printk(KERN_ERR "Illegal value %d\n", flag); | |
e3d6f909 | 1121 | return -EINVAL; |
c66ac9db | 1122 | } |
e3d6f909 | 1123 | dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = flag; |
c66ac9db | 1124 | printk(KERN_INFO "dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev, |
e3d6f909 | 1125 | (dev->se_sub_dev->se_dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); |
c66ac9db NB |
1126 | return 0; |
1127 | } | |
1128 | ||
1129 | /* | |
1130 | * Note, this can only be called on unexported SE Device Object. | |
1131 | */ | |
1132 | int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) | |
1133 | { | |
1134 | u32 orig_queue_depth = dev->queue_depth; | |
1135 | ||
1136 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
1137 | printk(KERN_ERR "dev[%p]: Unable to change SE Device TCQ while" | |
1138 | " dev_export_obj: %d count exists\n", dev, | |
1139 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1140 | return -EINVAL; |
c66ac9db NB |
1141 | } |
1142 | if (!(queue_depth)) { | |
1143 | printk(KERN_ERR "dev[%p]: Illegal ZERO value for queue" | |
1144 | "_depth\n", dev); | |
e3d6f909 | 1145 | return -EINVAL; |
c66ac9db NB |
1146 | } |
1147 | ||
e3d6f909 AG |
1148 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
1149 | if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) { | |
c66ac9db NB |
1150 | printk(KERN_ERR "dev[%p]: Passed queue_depth: %u" |
1151 | " exceeds TCM/SE_Device TCQ: %u\n", | |
1152 | dev, queue_depth, | |
e3d6f909 AG |
1153 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth); |
1154 | return -EINVAL; | |
c66ac9db NB |
1155 | } |
1156 | } else { | |
e3d6f909 AG |
1157 | if (queue_depth > dev->se_sub_dev->se_dev_attrib.queue_depth) { |
1158 | if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) { | |
c66ac9db NB |
1159 | printk(KERN_ERR "dev[%p]: Passed queue_depth:" |
1160 | " %u exceeds TCM/SE_Device MAX" | |
1161 | " TCQ: %u\n", dev, queue_depth, | |
e3d6f909 AG |
1162 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth); |
1163 | return -EINVAL; | |
c66ac9db NB |
1164 | } |
1165 | } | |
1166 | } | |
1167 | ||
e3d6f909 | 1168 | dev->se_sub_dev->se_dev_attrib.queue_depth = dev->queue_depth = queue_depth; |
c66ac9db NB |
1169 | if (queue_depth > orig_queue_depth) |
1170 | atomic_add(queue_depth - orig_queue_depth, &dev->depth_left); | |
1171 | else if (queue_depth < orig_queue_depth) | |
1172 | atomic_sub(orig_queue_depth - queue_depth, &dev->depth_left); | |
1173 | ||
1174 | printk(KERN_INFO "dev[%p]: SE Device TCQ Depth changed to: %u\n", | |
1175 | dev, queue_depth); | |
1176 | return 0; | |
1177 | } | |
1178 | ||
1179 | int se_dev_set_max_sectors(struct se_device *dev, u32 max_sectors) | |
1180 | { | |
1181 | int force = 0; /* Force setting for VDEVS */ | |
1182 | ||
1183 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
1184 | printk(KERN_ERR "dev[%p]: Unable to change SE Device" | |
1185 | " max_sectors while dev_export_obj: %d count exists\n", | |
1186 | dev, atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1187 | return -EINVAL; |
c66ac9db NB |
1188 | } |
1189 | if (!(max_sectors)) { | |
1190 | printk(KERN_ERR "dev[%p]: Illegal ZERO value for" | |
1191 | " max_sectors\n", dev); | |
e3d6f909 | 1192 | return -EINVAL; |
c66ac9db NB |
1193 | } |
1194 | if (max_sectors < DA_STATUS_MAX_SECTORS_MIN) { | |
1195 | printk(KERN_ERR "dev[%p]: Passed max_sectors: %u less than" | |
1196 | " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, max_sectors, | |
1197 | DA_STATUS_MAX_SECTORS_MIN); | |
e3d6f909 | 1198 | return -EINVAL; |
c66ac9db | 1199 | } |
e3d6f909 AG |
1200 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
1201 | if (max_sectors > dev->se_sub_dev->se_dev_attrib.hw_max_sectors) { | |
c66ac9db NB |
1202 | printk(KERN_ERR "dev[%p]: Passed max_sectors: %u" |
1203 | " greater than TCM/SE_Device max_sectors:" | |
1204 | " %u\n", dev, max_sectors, | |
e3d6f909 AG |
1205 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors); |
1206 | return -EINVAL; | |
c66ac9db NB |
1207 | } |
1208 | } else { | |
1209 | if (!(force) && (max_sectors > | |
e3d6f909 | 1210 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors)) { |
c66ac9db NB |
1211 | printk(KERN_ERR "dev[%p]: Passed max_sectors: %u" |
1212 | " greater than TCM/SE_Device max_sectors" | |
1213 | ": %u, use force=1 to override.\n", dev, | |
e3d6f909 AG |
1214 | max_sectors, dev->se_sub_dev->se_dev_attrib.hw_max_sectors); |
1215 | return -EINVAL; | |
c66ac9db NB |
1216 | } |
1217 | if (max_sectors > DA_STATUS_MAX_SECTORS_MAX) { | |
1218 | printk(KERN_ERR "dev[%p]: Passed max_sectors: %u" | |
1219 | " greater than DA_STATUS_MAX_SECTORS_MAX:" | |
1220 | " %u\n", dev, max_sectors, | |
1221 | DA_STATUS_MAX_SECTORS_MAX); | |
e3d6f909 | 1222 | return -EINVAL; |
c66ac9db NB |
1223 | } |
1224 | } | |
1225 | ||
e3d6f909 | 1226 | dev->se_sub_dev->se_dev_attrib.max_sectors = max_sectors; |
c66ac9db NB |
1227 | printk("dev[%p]: SE Device max_sectors changed to %u\n", |
1228 | dev, max_sectors); | |
1229 | return 0; | |
1230 | } | |
1231 | ||
1232 | int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) | |
1233 | { | |
1234 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
1235 | printk(KERN_ERR "dev[%p]: Unable to change SE Device" | |
1236 | " optimal_sectors while dev_export_obj: %d count exists\n", | |
1237 | dev, atomic_read(&dev->dev_export_obj.obj_access_count)); | |
1238 | return -EINVAL; | |
1239 | } | |
e3d6f909 | 1240 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
c66ac9db NB |
1241 | printk(KERN_ERR "dev[%p]: Passed optimal_sectors cannot be" |
1242 | " changed for TCM/pSCSI\n", dev); | |
1243 | return -EINVAL; | |
1244 | } | |
e3d6f909 | 1245 | if (optimal_sectors > dev->se_sub_dev->se_dev_attrib.max_sectors) { |
c66ac9db NB |
1246 | printk(KERN_ERR "dev[%p]: Passed optimal_sectors %u cannot be" |
1247 | " greater than max_sectors: %u\n", dev, | |
e3d6f909 | 1248 | optimal_sectors, dev->se_sub_dev->se_dev_attrib.max_sectors); |
c66ac9db NB |
1249 | return -EINVAL; |
1250 | } | |
1251 | ||
e3d6f909 | 1252 | dev->se_sub_dev->se_dev_attrib.optimal_sectors = optimal_sectors; |
c66ac9db NB |
1253 | printk(KERN_INFO "dev[%p]: SE Device optimal_sectors changed to %u\n", |
1254 | dev, optimal_sectors); | |
1255 | return 0; | |
1256 | } | |
1257 | ||
1258 | int se_dev_set_block_size(struct se_device *dev, u32 block_size) | |
1259 | { | |
1260 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
1261 | printk(KERN_ERR "dev[%p]: Unable to change SE Device block_size" | |
1262 | " while dev_export_obj: %d count exists\n", dev, | |
1263 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1264 | return -EINVAL; |
c66ac9db NB |
1265 | } |
1266 | ||
1267 | if ((block_size != 512) && | |
1268 | (block_size != 1024) && | |
1269 | (block_size != 2048) && | |
1270 | (block_size != 4096)) { | |
1271 | printk(KERN_ERR "dev[%p]: Illegal value for block_device: %u" | |
1272 | " for SE device, must be 512, 1024, 2048 or 4096\n", | |
1273 | dev, block_size); | |
e3d6f909 | 1274 | return -EINVAL; |
c66ac9db NB |
1275 | } |
1276 | ||
e3d6f909 | 1277 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
c66ac9db NB |
1278 | printk(KERN_ERR "dev[%p]: Not allowed to change block_size for" |
1279 | " Physical Device, use for Linux/SCSI to change" | |
1280 | " block_size for underlying hardware\n", dev); | |
e3d6f909 | 1281 | return -EINVAL; |
c66ac9db NB |
1282 | } |
1283 | ||
e3d6f909 | 1284 | dev->se_sub_dev->se_dev_attrib.block_size = block_size; |
c66ac9db NB |
1285 | printk(KERN_INFO "dev[%p]: SE Device block_size changed to %u\n", |
1286 | dev, block_size); | |
1287 | return 0; | |
1288 | } | |
1289 | ||
1290 | struct se_lun *core_dev_add_lun( | |
1291 | struct se_portal_group *tpg, | |
1292 | struct se_hba *hba, | |
1293 | struct se_device *dev, | |
1294 | u32 lun) | |
1295 | { | |
1296 | struct se_lun *lun_p; | |
1297 | u32 lun_access = 0; | |
1298 | ||
1299 | if (atomic_read(&dev->dev_access_obj.obj_access_count) != 0) { | |
1300 | printk(KERN_ERR "Unable to export struct se_device while dev_access_obj: %d\n", | |
1301 | atomic_read(&dev->dev_access_obj.obj_access_count)); | |
1302 | return NULL; | |
1303 | } | |
1304 | ||
1305 | lun_p = core_tpg_pre_addlun(tpg, lun); | |
1306 | if ((IS_ERR(lun_p)) || !(lun_p)) | |
1307 | return NULL; | |
1308 | ||
1309 | if (dev->dev_flags & DF_READ_ONLY) | |
1310 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; | |
1311 | else | |
1312 | lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; | |
1313 | ||
1314 | if (core_tpg_post_addlun(tpg, lun_p, lun_access, dev) < 0) | |
1315 | return NULL; | |
1316 | ||
1317 | printk(KERN_INFO "%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" | |
e3d6f909 AG |
1318 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
1319 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun_p->unpacked_lun, | |
1320 | tpg->se_tpg_tfo->get_fabric_name(), hba->hba_id); | |
c66ac9db NB |
1321 | /* |
1322 | * Update LUN maps for dynamically added initiators when | |
1323 | * generate_node_acl is enabled. | |
1324 | */ | |
e3d6f909 | 1325 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
c66ac9db NB |
1326 | struct se_node_acl *acl; |
1327 | spin_lock_bh(&tpg->acl_node_lock); | |
1328 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { | |
1329 | if (acl->dynamic_node_acl) { | |
1330 | spin_unlock_bh(&tpg->acl_node_lock); | |
1331 | core_tpg_add_node_to_devs(acl, tpg); | |
1332 | spin_lock_bh(&tpg->acl_node_lock); | |
1333 | } | |
1334 | } | |
1335 | spin_unlock_bh(&tpg->acl_node_lock); | |
1336 | } | |
1337 | ||
1338 | return lun_p; | |
1339 | } | |
1340 | ||
1341 | /* core_dev_del_lun(): | |
1342 | * | |
1343 | * | |
1344 | */ | |
1345 | int core_dev_del_lun( | |
1346 | struct se_portal_group *tpg, | |
1347 | u32 unpacked_lun) | |
1348 | { | |
1349 | struct se_lun *lun; | |
1350 | int ret = 0; | |
1351 | ||
1352 | lun = core_tpg_pre_dellun(tpg, unpacked_lun, &ret); | |
1353 | if (!(lun)) | |
1354 | return ret; | |
1355 | ||
1356 | core_tpg_post_dellun(tpg, lun); | |
1357 | ||
1358 | printk(KERN_INFO "%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from" | |
e3d6f909 AG |
1359 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
1360 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, | |
1361 | tpg->se_tpg_tfo->get_fabric_name()); | |
c66ac9db NB |
1362 | |
1363 | return 0; | |
1364 | } | |
1365 | ||
1366 | struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun) | |
1367 | { | |
1368 | struct se_lun *lun; | |
1369 | ||
1370 | spin_lock(&tpg->tpg_lun_lock); | |
1371 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { | |
1372 | printk(KERN_ERR "%s LUN: %u exceeds TRANSPORT_MAX_LUNS" | |
1373 | "_PER_TPG-1: %u for Target Portal Group: %hu\n", | |
e3d6f909 | 1374 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
c66ac9db | 1375 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
e3d6f909 | 1376 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
c66ac9db NB |
1377 | spin_unlock(&tpg->tpg_lun_lock); |
1378 | return NULL; | |
1379 | } | |
1380 | lun = &tpg->tpg_lun_list[unpacked_lun]; | |
1381 | ||
1382 | if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { | |
1383 | printk(KERN_ERR "%s Logical Unit Number: %u is not free on" | |
1384 | " Target Portal Group: %hu, ignoring request.\n", | |
e3d6f909 AG |
1385 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1386 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1387 | spin_unlock(&tpg->tpg_lun_lock); |
1388 | return NULL; | |
1389 | } | |
1390 | spin_unlock(&tpg->tpg_lun_lock); | |
1391 | ||
1392 | return lun; | |
1393 | } | |
1394 | ||
1395 | /* core_dev_get_lun(): | |
1396 | * | |
1397 | * | |
1398 | */ | |
1399 | static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun) | |
1400 | { | |
1401 | struct se_lun *lun; | |
1402 | ||
1403 | spin_lock(&tpg->tpg_lun_lock); | |
1404 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { | |
1405 | printk(KERN_ERR "%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER" | |
1406 | "_TPG-1: %u for Target Portal Group: %hu\n", | |
e3d6f909 | 1407 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
c66ac9db | 1408 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
e3d6f909 | 1409 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
c66ac9db NB |
1410 | spin_unlock(&tpg->tpg_lun_lock); |
1411 | return NULL; | |
1412 | } | |
1413 | lun = &tpg->tpg_lun_list[unpacked_lun]; | |
1414 | ||
1415 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { | |
1416 | printk(KERN_ERR "%s Logical Unit Number: %u is not active on" | |
1417 | " Target Portal Group: %hu, ignoring request.\n", | |
e3d6f909 AG |
1418 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1419 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1420 | spin_unlock(&tpg->tpg_lun_lock); |
1421 | return NULL; | |
1422 | } | |
1423 | spin_unlock(&tpg->tpg_lun_lock); | |
1424 | ||
1425 | return lun; | |
1426 | } | |
1427 | ||
1428 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( | |
1429 | struct se_portal_group *tpg, | |
1430 | u32 mapped_lun, | |
1431 | char *initiatorname, | |
1432 | int *ret) | |
1433 | { | |
1434 | struct se_lun_acl *lacl; | |
1435 | struct se_node_acl *nacl; | |
1436 | ||
60d645a4 | 1437 | if (strlen(initiatorname) >= TRANSPORT_IQN_LEN) { |
c66ac9db | 1438 | printk(KERN_ERR "%s InitiatorName exceeds maximum size.\n", |
e3d6f909 | 1439 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
1440 | *ret = -EOVERFLOW; |
1441 | return NULL; | |
1442 | } | |
1443 | nacl = core_tpg_get_initiator_node_acl(tpg, initiatorname); | |
1444 | if (!(nacl)) { | |
1445 | *ret = -EINVAL; | |
1446 | return NULL; | |
1447 | } | |
1448 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); | |
1449 | if (!(lacl)) { | |
1450 | printk(KERN_ERR "Unable to allocate memory for struct se_lun_acl.\n"); | |
1451 | *ret = -ENOMEM; | |
1452 | return NULL; | |
1453 | } | |
1454 | ||
1455 | INIT_LIST_HEAD(&lacl->lacl_list); | |
1456 | lacl->mapped_lun = mapped_lun; | |
1457 | lacl->se_lun_nacl = nacl; | |
1458 | snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); | |
1459 | ||
1460 | return lacl; | |
1461 | } | |
1462 | ||
1463 | int core_dev_add_initiator_node_lun_acl( | |
1464 | struct se_portal_group *tpg, | |
1465 | struct se_lun_acl *lacl, | |
1466 | u32 unpacked_lun, | |
1467 | u32 lun_access) | |
1468 | { | |
1469 | struct se_lun *lun; | |
1470 | struct se_node_acl *nacl; | |
1471 | ||
1472 | lun = core_dev_get_lun(tpg, unpacked_lun); | |
1473 | if (!(lun)) { | |
1474 | printk(KERN_ERR "%s Logical Unit Number: %u is not active on" | |
1475 | " Target Portal Group: %hu, ignoring request.\n", | |
e3d6f909 AG |
1476 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1477 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1478 | return -EINVAL; |
1479 | } | |
1480 | ||
1481 | nacl = lacl->se_lun_nacl; | |
1482 | if (!(nacl)) | |
1483 | return -EINVAL; | |
1484 | ||
1485 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && | |
1486 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) | |
1487 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; | |
1488 | ||
1489 | lacl->se_lun = lun; | |
1490 | ||
1491 | if (core_update_device_list_for_node(lun, lacl, lacl->mapped_lun, | |
1492 | lun_access, nacl, tpg, 1) < 0) | |
1493 | return -EINVAL; | |
1494 | ||
1495 | spin_lock(&lun->lun_acl_lock); | |
1496 | list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); | |
1497 | atomic_inc(&lun->lun_acl_count); | |
1498 | smp_mb__after_atomic_inc(); | |
1499 | spin_unlock(&lun->lun_acl_lock); | |
1500 | ||
1501 | printk(KERN_INFO "%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " | |
e3d6f909 AG |
1502 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
1503 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun, | |
c66ac9db NB |
1504 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
1505 | lacl->initiatorname); | |
1506 | /* | |
1507 | * Check to see if there are any existing persistent reservation APTPL | |
1508 | * pre-registrations that need to be enabled for this LUN ACL.. | |
1509 | */ | |
1510 | core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, lacl); | |
1511 | return 0; | |
1512 | } | |
1513 | ||
1514 | /* core_dev_del_initiator_node_lun_acl(): | |
1515 | * | |
1516 | * | |
1517 | */ | |
1518 | int core_dev_del_initiator_node_lun_acl( | |
1519 | struct se_portal_group *tpg, | |
1520 | struct se_lun *lun, | |
1521 | struct se_lun_acl *lacl) | |
1522 | { | |
1523 | struct se_node_acl *nacl; | |
1524 | ||
1525 | nacl = lacl->se_lun_nacl; | |
1526 | if (!(nacl)) | |
1527 | return -EINVAL; | |
1528 | ||
1529 | spin_lock(&lun->lun_acl_lock); | |
1530 | list_del(&lacl->lacl_list); | |
1531 | atomic_dec(&lun->lun_acl_count); | |
1532 | smp_mb__after_atomic_dec(); | |
1533 | spin_unlock(&lun->lun_acl_lock); | |
1534 | ||
1535 | core_update_device_list_for_node(lun, NULL, lacl->mapped_lun, | |
1536 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); | |
1537 | ||
1538 | lacl->se_lun = NULL; | |
1539 | ||
1540 | printk(KERN_INFO "%s_TPG[%hu]_LUN[%u] - Removed ACL for" | |
1541 | " InitiatorNode: %s Mapped LUN: %u\n", | |
e3d6f909 AG |
1542 | tpg->se_tpg_tfo->get_fabric_name(), |
1543 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, | |
c66ac9db NB |
1544 | lacl->initiatorname, lacl->mapped_lun); |
1545 | ||
1546 | return 0; | |
1547 | } | |
1548 | ||
1549 | void core_dev_free_initiator_node_lun_acl( | |
1550 | struct se_portal_group *tpg, | |
1551 | struct se_lun_acl *lacl) | |
1552 | { | |
1553 | printk("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" | |
e3d6f909 AG |
1554 | " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
1555 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
1556 | tpg->se_tpg_tfo->get_fabric_name(), | |
c66ac9db NB |
1557 | lacl->initiatorname, lacl->mapped_lun); |
1558 | ||
1559 | kfree(lacl); | |
1560 | } | |
1561 | ||
1562 | int core_dev_setup_virtual_lun0(void) | |
1563 | { | |
1564 | struct se_hba *hba; | |
1565 | struct se_device *dev; | |
1566 | struct se_subsystem_dev *se_dev = NULL; | |
1567 | struct se_subsystem_api *t; | |
1568 | char buf[16]; | |
1569 | int ret; | |
1570 | ||
1571 | hba = core_alloc_hba("rd_dr", 0, HBA_FLAGS_INTERNAL_USE); | |
1572 | if (IS_ERR(hba)) | |
1573 | return PTR_ERR(hba); | |
1574 | ||
e3d6f909 | 1575 | lun0_hba = hba; |
c66ac9db NB |
1576 | t = hba->transport; |
1577 | ||
1578 | se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); | |
1579 | if (!(se_dev)) { | |
1580 | printk(KERN_ERR "Unable to allocate memory for" | |
1581 | " struct se_subsystem_dev\n"); | |
1582 | ret = -ENOMEM; | |
1583 | goto out; | |
1584 | } | |
e3d6f909 | 1585 | INIT_LIST_HEAD(&se_dev->se_dev_node); |
c66ac9db NB |
1586 | INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); |
1587 | spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); | |
e3d6f909 AG |
1588 | INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); |
1589 | INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); | |
1590 | spin_lock_init(&se_dev->t10_pr.registration_lock); | |
1591 | spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); | |
c66ac9db NB |
1592 | INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); |
1593 | spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); | |
1594 | spin_lock_init(&se_dev->se_dev_lock); | |
e3d6f909 | 1595 | se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; |
c66ac9db NB |
1596 | se_dev->t10_wwn.t10_sub_dev = se_dev; |
1597 | se_dev->t10_alua.t10_sub_dev = se_dev; | |
1598 | se_dev->se_dev_attrib.da_sub_dev = se_dev; | |
1599 | se_dev->se_dev_hba = hba; | |
1600 | ||
1601 | se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, "virt_lun0"); | |
1602 | if (!(se_dev->se_dev_su_ptr)) { | |
1603 | printk(KERN_ERR "Unable to locate subsystem dependent pointer" | |
1604 | " from allocate_virtdevice()\n"); | |
1605 | ret = -ENOMEM; | |
1606 | goto out; | |
1607 | } | |
e3d6f909 | 1608 | lun0_su_dev = se_dev; |
c66ac9db NB |
1609 | |
1610 | memset(buf, 0, 16); | |
1611 | sprintf(buf, "rd_pages=8"); | |
1612 | t->set_configfs_dev_params(hba, se_dev, buf, sizeof(buf)); | |
1613 | ||
1614 | dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); | |
e3d6f909 AG |
1615 | if (IS_ERR(dev)) { |
1616 | ret = PTR_ERR(dev); | |
c66ac9db NB |
1617 | goto out; |
1618 | } | |
1619 | se_dev->se_dev_ptr = dev; | |
e3d6f909 | 1620 | g_lun0_dev = dev; |
c66ac9db NB |
1621 | |
1622 | return 0; | |
1623 | out: | |
e3d6f909 | 1624 | lun0_su_dev = NULL; |
c66ac9db | 1625 | kfree(se_dev); |
e3d6f909 AG |
1626 | if (lun0_hba) { |
1627 | core_delete_hba(lun0_hba); | |
1628 | lun0_hba = NULL; | |
c66ac9db NB |
1629 | } |
1630 | return ret; | |
1631 | } | |
1632 | ||
1633 | ||
1634 | void core_dev_release_virtual_lun0(void) | |
1635 | { | |
e3d6f909 AG |
1636 | struct se_hba *hba = lun0_hba; |
1637 | struct se_subsystem_dev *su_dev = lun0_su_dev; | |
c66ac9db NB |
1638 | |
1639 | if (!(hba)) | |
1640 | return; | |
1641 | ||
e3d6f909 AG |
1642 | if (g_lun0_dev) |
1643 | se_free_virtual_device(g_lun0_dev, hba); | |
c66ac9db NB |
1644 | |
1645 | kfree(su_dev); | |
1646 | core_delete_hba(hba); | |
1647 | } |